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ib_srpt: Convert to percpu_ida tag allocation
[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
a07100e0 108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
2d70c103
NB		 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
3bb67df5 232static bool 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
3bb67df5 288 return false;
2d70c103
NB		 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;
2d70c103
NB		 882
883 /* Check to avoid double sessions */
7560151b 884 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
0e8cd71c 885 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list,
2d70c103
NB		 886 sess_list_entry) {
887 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
888 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
889 "Double sess %p found (s_id %x:%x:%x, "
890 "loop_id %d), updating to d_id %x:%x:%x, "
891 "loop_id %d", sess, sess->s_id.b.domain,
892 sess->s_id.b.al_pa, sess->s_id.b.area,
893 sess->loop_id, fcport->d_id.b.domain,
894 fcport->d_id.b.al_pa, fcport->d_id.b.area,
895 fcport->loop_id);
896
a6ca8878
AP		 897 /* Cannot undelete at this point */
898 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
7560151b 899 spin_unlock_irqrestore(&ha->tgt.sess_lock,
a6ca8878
AP		 900 flags);
901 return NULL;
902 }
903
2d70c103
NB		 904 if (sess->deleted)
905 qlt_undelete_sess(sess);
906
907 kref_get(&sess->se_sess->sess_kref);
c8292d1d
RD		 908 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
909 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
910
2d70c103
NB		 911 if (sess->local && !local)
912 sess->local = 0;
df673274
AP		 913
914 qlt_do_generation_tick(vha, &sess->generation);
915
7560151b 916 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 917
918 return sess;
919 }
920 }
7560151b 921 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 922
923 sess = kzalloc(sizeof(*sess), GFP_KERNEL);
924 if (!sess) {
925 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
7b833558
OK		 926 "qla_target(%u): session allocation failed, all commands "
927 "from port %8phC will be refused", vha->vp_idx,
928 fcport->port_name);
2d70c103
NB		 929
930 return NULL;
931 }
0e8cd71c 932 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 933 sess->vha = vha;
934 sess->s_id = fcport->d_id;
935 sess->loop_id = fcport->loop_id;
936 sess->local = local;
a6ca8878
AP		 937 INIT_LIST_HEAD(&sess->del_list_entry);
938
939 /* Under normal circumstances we want to logout from firmware when
940 * session eventually ends and release corresponding nport handle.
941 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
942 * code will adjust these flags as necessary. */
943 sess->logout_on_delete = 1;
944 sess->keep_nport_handle = 0;
2d70c103
NB		 945
946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
947 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
0e8cd71c 948 sess, vha->vha_tgt.qla_tgt);
2d70c103 949
2d70c103
NB		 950 /*
951 * Determine if this fc_port->port_name is allowed to access
952 * target mode using explict NodeACLs+MappedLUNs, or using
953 * TPG demo mode. If this is successful a target mode FC nexus
954 * is created.
955 */
1b655b19
NB		 956 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, &fcport->port_name[0],
957 sess)) {
2d70c103
NB		 958 kfree(sess);
959 return NULL;
960 }
961 /*
962 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
7560151b 963 * access across ->tgt.sess_lock reaquire.
2d70c103
NB		 964 */
965 kref_get(&sess->se_sess->sess_kref);
966
c8292d1d 967 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
2d70c103
NB		 968 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
969 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
970
7560151b 971 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
0e8cd71c
SK		 972 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
973 vha->vha_tgt.qla_tgt->sess_count++;
df673274 974 qlt_do_generation_tick(vha, &sess->generation);
7560151b 975 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 976
977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 978 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
979 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
980 vha->vp_idx, local ? "local " : "", fcport->port_name,
981 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
982 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 983
984 return sess;
985}
986
987/*
df673274 988 * Called from qla2x00_reg_remote_port()
2d70c103
NB		 989 */
990void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
991{
992 struct qla_hw_data *ha = vha->hw;
0e8cd71c 993 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 994 struct qla_tgt_sess *sess;
995 unsigned long flags;
996
997 if (!vha->hw->tgt.tgt_ops)
998 return;
999
1000 if (!tgt || (fcport->port_type != FCT_INITIATOR))
1001 return;
1002
0e8cd71c
SK		 1003 if (qla_ini_mode_enabled(vha))
1004 return;
1005
7560151b 1006 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1007 if (tgt->tgt_stop) {
7560151b 1008 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1009 return;
1010 }
1011 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
1012 if (!sess) {
7560151b 1013 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1014
0e8cd71c 1015 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1016 sess = qlt_create_sess(vha, fcport, false);
0e8cd71c 1017 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1018
7560151b 1019 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
a6ca8878
AP		 1020 } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1021 /* Point of no return */
7560151b 1022 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
a6ca8878 1023 return;
2d70c103
NB		 1024 } else {
1025 kref_get(&sess->se_sess->sess_kref);
1026
1027 if (sess->deleted) {
1028 qlt_undelete_sess(sess);
1029
1030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
7b833558
OK		 1031 "qla_target(%u): %ssession for port %8phC "
1032 "(loop ID %d) reappeared\n", vha->vp_idx,
1033 sess->local ? "local " : "", sess->port_name,
2d70c103
NB		 1034 sess->loop_id);
1035
1036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
1037 "Reappeared sess %p\n", sess);
1038 }
c8292d1d
RD		 1039 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
1040 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
2d70c103
NB		 1041 }
1042
1043 if (sess && sess->local) {
1044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
1045 "qla_target(%u): local session for "
7b833558
OK		 1046 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
1047 fcport->port_name, sess->loop_id);
2d70c103
NB		 1048 sess->local = 0;
1049 }
2d70c103 1050 ha->tgt.tgt_ops->put_sess(sess);
7560151b 1051 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1052}
1053
df673274
AP		 1054/*
1055 * max_gen - specifies maximum session generation
1056 * at which this deletion requestion is still valid
1057 */
1058void
1059qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1060{
0e8cd71c 1061 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 1062 struct qla_tgt_sess *sess;
7560151b 1063 unsigned long flags;
2d70c103
NB		 1064
1065 if (!vha->hw->tgt.tgt_ops)
1066 return;
1067
b2032fd5 1068 if (!tgt)
2d70c103
NB		 1069 return;
1070
7560151b 1071 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1072 if (tgt->tgt_stop) {
7560151b 1073 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1074 return;
1075 }
1076 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
1077 if (!sess) {
7560151b 1078 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1079 return;
1080 }
1081
df673274 1082 if (max_gen - sess->generation < 0) {
7560151b 1083 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1085 "Ignoring stale deletion request for se_sess %p / sess %p"
1086 " for port %8phC, req_gen %d, sess_gen %d\n",
1087 sess->se_sess, sess, sess->port_name, max_gen,
1088 sess->generation);
1089 return;
1090 }
1091
2d70c103
NB		 1092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1093
1094 sess->local = 1;
1095 qlt_schedule_sess_for_deletion(sess, false);
7560151b 1096 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1097}
1098
1099static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1100{
1101 struct qla_hw_data *ha = tgt->ha;
1102 unsigned long flags;
1103 int res;
1104 /*
1105 * We need to protect against race, when tgt is freed before or
1106 * inside wake_up()
1107 */
1108 spin_lock_irqsave(&ha->hardware_lock, flags);
1109 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
1110 "tgt %p, empty(sess_list)=%d sess_count=%d\n",
1111 tgt, list_empty(&tgt->sess_list), tgt->sess_count);
1112 res = (tgt->sess_count == 0);
1113 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1114
1115 return res;
1116}
1117
1118/* Called by tcm_qla2xxx configfs code */
3c231bda 1119int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1120{
1121 struct scsi_qla_host *vha = tgt->vha;
1122 struct qla_hw_data *ha = tgt->ha;
1123 unsigned long flags;
1124
3c231bda
NB		 1125 mutex_lock(&qla_tgt_mutex);
1126 if (!vha->fc_vport) {
1127 struct Scsi_Host *sh = vha->host;
1128 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1129 bool npiv_vports;
1130
1131 spin_lock_irqsave(sh->host_lock, flags);
1132 npiv_vports = (fc_host->npiv_vports_inuse);
1133 spin_unlock_irqrestore(sh->host_lock, flags);
1134
1135 if (npiv_vports) {
1136 mutex_unlock(&qla_tgt_mutex);
1137 return -EPERM;
1138 }
1139 }
2d70c103
NB		 1140 if (tgt->tgt_stop || tgt->tgt_stopped) {
1141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1142 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1143 mutex_unlock(&qla_tgt_mutex);
1144 return -EPERM;
2d70c103
NB		 1145 }
1146
1147 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1148 vha->host_no, vha);
1149 /*
1150 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1151 * Lock is needed, because we still can get an incoming packet.
1152 */
0e8cd71c 1153 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1154 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1155 tgt->tgt_stop = 1;
c5701042 1156 qlt_clear_tgt_db(tgt);
7560151b 1157 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1158 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1159 mutex_unlock(&qla_tgt_mutex);
2d70c103 1160
43829731 1161 flush_delayed_work(&tgt->sess_del_work);
2d70c103
NB		 1162
1163 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1164 "Waiting for sess works (tgt %p)", tgt);
1165 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1166 while (!list_empty(&tgt->sess_works_list)) {
1167 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1168 flush_scheduled_work();
1169 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1170 }
1171 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1172
1173 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
1174 "Waiting for tgt %p: list_empty(sess_list)=%d "
1175 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
1176 tgt->sess_count);
1177
1178 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1179
1180 /* Big hammer */
1181 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
1182 qlt_disable_vha(vha);
1183
1184 /* Wait for sessions to clear out (just in case) */
1185 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1186 return 0;
2d70c103
NB		 1187}
1188EXPORT_SYMBOL(qlt_stop_phase1);
1189
1190/* Called by tcm_qla2xxx configfs code */
1191void qlt_stop_phase2(struct qla_tgt *tgt)
1192{
1193 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 1194 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 1195 unsigned long flags;
1196
1197 if (tgt->tgt_stopped) {
0e8cd71c 1198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1199 "Already in tgt->tgt_stopped state\n");
1200 dump_stack();
1201 return;
1202 }
1203
0e8cd71c 1204 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 1205 "Waiting for %d IRQ commands to complete (tgt %p)",
1206 tgt->irq_cmd_count, tgt);
1207
0e8cd71c 1208 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1209 spin_lock_irqsave(&ha->hardware_lock, flags);
2f424b9b 1210 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
2d70c103
NB		 1211 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1212 udelay(2);
1213 spin_lock_irqsave(&ha->hardware_lock, flags);
1214 }
1215 tgt->tgt_stop = 0;
1216 tgt->tgt_stopped = 1;
1217 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 1218 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1219
0e8cd71c 1220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 1221 tgt);
1222}
1223EXPORT_SYMBOL(qlt_stop_phase2);
1224
1225/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1226static void qlt_release(struct qla_tgt *tgt)
2d70c103 1227{
0e8cd71c 1228 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1229
0e8cd71c 1230 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1231 qlt_stop_phase2(tgt);
1232
0e8cd71c 1233 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1234
0e8cd71c 1235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1236 "Release of tgt %p finished\n", tgt);
1237
1238 kfree(tgt);
1239}
1240
1241/* ha->hardware_lock supposed to be held on entry */
1242static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1243 const void *param, unsigned int param_size)
1244{
1245 struct qla_tgt_sess_work_param *prm;
1246 unsigned long flags;
1247
1248 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1249 if (!prm) {
1250 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1251 "qla_target(%d): Unable to create session "
1252 "work, command will be refused", 0);
1253 return -ENOMEM;
1254 }
1255
1256 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1257 "Scheduling work (type %d, prm %p)"
1258 " to find session for param %p (size %d, tgt %p)\n",
1259 type, prm, param, param_size, tgt);
1260
1261 prm->type = type;
1262 memcpy(&prm->tm_iocb, param, param_size);
1263
1264 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1265 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1266 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1267
1268 schedule_work(&tgt->sess_work);
1269
1270 return 0;
1271}
1272
1273/*
1274 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1275 */
1276static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1277 struct imm_ntfy_from_isp *ntfy,
1278 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1279 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1280{
1281 struct qla_hw_data *ha = vha->hw;
1282 request_t *pkt;
1283 struct nack_to_isp *nack;
1284
1285 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1286
1287 /* Send marker if required */
1288 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1289 return;
1290
1291 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1292 if (!pkt) {
1293 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1294 "qla_target(%d): %s failed: unable to allocate "
1295 "request packet\n", vha->vp_idx, __func__);
1296 return;
1297 }
1298
0e8cd71c
SK		 1299 if (vha->vha_tgt.qla_tgt != NULL)
1300 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1301
1302 pkt->entry_type = NOTIFY_ACK_TYPE;
1303 pkt->entry_count = 1;
1304
1305 nack = (struct nack_to_isp *)pkt;
1306 nack->ox_id = ntfy->ox_id;
1307
1308 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1309 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1310 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1311 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1312 }
1313 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1314 nack->u.isp24.status = ntfy->u.isp24.status;
1315 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1316 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1317 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1318 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1319 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1320 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1321 nack->u.isp24.srr_reject_code = srr_reject_code;
1322 nack->u.isp24.srr_reject_code_expl = srr_explan;
1323 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1324
1325 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1326 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1327 vha->vp_idx, nack->u.isp24.status);
1328
63163e06
HM		 1329 /* Memory Barrier */
1330 wmb();
2d70c103
NB		 1331 qla2x00_start_iocbs(vha, vha->req);
1332}
1333
1334/*
1335 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1336 */
1337static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1338 struct abts_recv_from_24xx *abts, uint32_t status,
1339 bool ids_reversed)
1340{
1341 struct qla_hw_data *ha = vha->hw;
1342 struct abts_resp_to_24xx *resp;
1343 uint32_t f_ctl;
1344 uint8_t *p;
1345
1346 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1347 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1348 ha, abts, status);
1349
1350 /* Send marker if required */
1351 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1352 return;
1353
b6a029e1 1354 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1355 if (!resp) {
1356 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1357 "qla_target(%d): %s failed: unable to allocate "
1358 "request packet", vha->vp_idx, __func__);
1359 return;
1360 }
1361
1362 resp->entry_type = ABTS_RESP_24XX;
1363 resp->entry_count = 1;
1364 resp->nport_handle = abts->nport_handle;
1365 resp->vp_index = vha->vp_idx;
1366 resp->sof_type = abts->sof_type;
1367 resp->exchange_address = abts->exchange_address;
1368 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1369 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1370 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1371 F_CTL_SEQ_INITIATIVE);
1372 p = (uint8_t *)&f_ctl;
1373 resp->fcp_hdr_le.f_ctl[0] = *p++;
1374 resp->fcp_hdr_le.f_ctl[1] = *p++;
1375 resp->fcp_hdr_le.f_ctl[2] = *p;
1376 if (ids_reversed) {
1377 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1378 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1379 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1380 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1381 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1382 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1383 } else {
1384 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1385 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1386 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1387 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1388 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1389 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1390 }
1391 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1392 if (status == FCP_TMF_CMPL) {
1393 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1394 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1395 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1396 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1397 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1398 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1399 } else {
1400 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1401 resp->payload.ba_rjt.reason_code =
1402 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1403 /* Other bytes are zero */
1404 }
1405
0e8cd71c 1406 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1407
63163e06
HM		 1408 /* Memory Barrier */
1409 wmb();
2d70c103
NB		 1410 qla2x00_start_iocbs(vha, vha->req);
1411}
1412
1413/*
1414 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1415 */
1416static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1417 struct abts_resp_from_24xx_fw *entry)
1418{
1419 struct ctio7_to_24xx *ctio;
1420
1421 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1422 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1423 /* Send marker if required */
1424 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1425 return;
1426
b6a029e1 1427 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1428 if (ctio == NULL) {
1429 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1430 "qla_target(%d): %s failed: unable to allocate "
1431 "request packet\n", vha->vp_idx, __func__);
1432 return;
1433 }
1434
1435 /*
1436 * We've got on entrance firmware's response on by us generated
1437 * ABTS response. So, in it ID fields are reversed.
1438 */
1439
1440 ctio->entry_type = CTIO_TYPE7;
1441 ctio->entry_count = 1;
1442 ctio->nport_handle = entry->nport_handle;
1443 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1444 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1445 ctio->vp_index = vha->vp_idx;
1446 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1447 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1448 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1449 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1450 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1451 CTIO7_FLAGS_TERMINATE);
33a5fcee 1452 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1453
63163e06
HM		 1454 /* Memory Barrier */
1455 wmb();
2d70c103
NB		 1456 qla2x00_start_iocbs(vha, vha->req);
1457
1458 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1459 FCP_TMF_CMPL, true);
1460}
1461
8b2f5ff3
SN		 1462static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1463{
1464 struct qla_tgt_sess_op *op;
1465 struct qla_tgt_cmd *cmd;
1466
1467 spin_lock(&vha->cmd_list_lock);
1468
1469 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1470 if (tag == op->atio.u.isp24.exchange_addr) {
1471 op->aborted = true;
1472 spin_unlock(&vha->cmd_list_lock);
1473 return 1;
1474 }
1475 }
1476
1477 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1478 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1479 cmd->aborted = 1;
8b2f5ff3
SN		 1480 spin_unlock(&vha->cmd_list_lock);
1481 return 1;
1482 }
1483 }
1484
1485 spin_unlock(&vha->cmd_list_lock);
1486 return 0;
1487}
1488
1489/* drop cmds for the given lun
1490 * XXX only looks for cmds on the port through which lun reset was recieved
1491 * XXX does not go through the list of other port (which may have cmds
1492 * for the same lun)
1493 */
1494static void abort_cmds_for_lun(struct scsi_qla_host *vha,
1495 uint32_t lun, uint8_t *s_id)
1496{
1497 struct qla_tgt_sess_op *op;
1498 struct qla_tgt_cmd *cmd;
1499 uint32_t key;
1500
1501 key = sid_to_key(s_id);
1502 spin_lock(&vha->cmd_list_lock);
1503 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1504 uint32_t op_key;
1505 uint32_t op_lun;
1506
1507 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1508 op_lun = scsilun_to_int(
1509 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1510 if (op_key == key && op_lun == lun)
1511 op->aborted = true;
1512 }
1513 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1514 uint32_t cmd_key;
1515 uint32_t cmd_lun;
1516
1517 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1518 cmd_lun = scsilun_to_int(
1519 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1520 if (cmd_key == key && cmd_lun == lun)
193b50b9 1521 cmd->aborted = 1;
8b2f5ff3
SN		 1522 }
1523 spin_unlock(&vha->cmd_list_lock);
1524}
1525
2d70c103
NB		 1526/* ha->hardware_lock supposed to be held on entry */
1527static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1528 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
1529{
1530 struct qla_hw_data *ha = vha->hw;
06e97b48 1531 struct se_session *se_sess = sess->se_sess;
2d70c103 1532 struct qla_tgt_mgmt_cmd *mcmd;
06e97b48
SH		 1533 struct se_cmd *se_cmd;
1534 u32 lun = 0;
2d70c103 1535 int rc;
06e97b48
SH		 1536 bool found_lun = false;
1537
1538 spin_lock(&se_sess->sess_cmd_lock);
1539 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
1540 struct qla_tgt_cmd *cmd =
1541 container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
649ee054 1542 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1543 lun = cmd->unpacked_lun;
1544 found_lun = true;
1545 break;
1546 }
1547 }
1548 spin_unlock(&se_sess->sess_cmd_lock);
1549
8b2f5ff3
SN		 1550 /* cmd not in LIO lists, look in qla list */
1551 if (!found_lun) {
1552 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1553 /* send TASK_ABORT response immediately */
1554 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1555 return 0;
1556 } else {
1557 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1558 "unable to find cmd in driver or LIO for tag 0x%x\n",
1559 abts->exchange_addr_to_abort);
1560 return -ENOENT;
1561 }
1562 }
2d70c103
NB		 1563
1564 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1565 "qla_target(%d): task abort (tag=%d)\n",
1566 vha->vp_idx, abts->exchange_addr_to_abort);
1567
1568 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1569 if (mcmd == NULL) {
1570 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1571 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1572 vha->vp_idx, __func__);
1573 return -ENOMEM;
1574 }
1575 memset(mcmd, 0, sizeof(*mcmd));
1576
1577 mcmd->sess = sess;
1578 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1579 mcmd->reset_count = vha->hw->chip_reset;
2d70c103 1580
06e97b48 1581 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
2d70c103
NB		 1582 abts->exchange_addr_to_abort);
1583 if (rc != 0) {
1584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1585 "qla_target(%d): tgt_ops->handle_tmr()"
1586 " failed: %d", vha->vp_idx, rc);
1587 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1588 return -EFAULT;
1589 }
1590
1591 return 0;
1592}
1593
1594/*
1595 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1596 */
1597static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1598 struct abts_recv_from_24xx *abts)
1599{
1600 struct qla_hw_data *ha = vha->hw;
1601 struct qla_tgt_sess *sess;
1602 uint32_t tag = abts->exchange_addr_to_abort;
1603 uint8_t s_id[3];
1604 int rc;
7560151b 1605 unsigned long flags;
2d70c103
NB		 1606
1607 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1608 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1609 "qla_target(%d): ABTS: Abort Sequence not "
1610 "supported\n", vha->vp_idx);
1611 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1612 return;
1613 }
1614
1615 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1616 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1617 "qla_target(%d): ABTS: Unknown Exchange "
1618 "Address received\n", vha->vp_idx);
1619 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1620 return;
1621 }
1622
1623 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1624 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1625 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1626 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1627 le32_to_cpu(abts->fcp_hdr_le.parameter));
1628
1629 s_id[0] = abts->fcp_hdr_le.s_id[2];
1630 s_id[1] = abts->fcp_hdr_le.s_id[1];
1631 s_id[2] = abts->fcp_hdr_le.s_id[0];
1632
7560151b 1633 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1634 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1635 if (!sess) {
1636 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1637 "qla_target(%d): task abort for non-existant session\n",
1638 vha->vp_idx);
0e8cd71c 1639 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1640 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1641
1642 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1643
2d70c103
NB		 1644 if (rc != 0) {
1645 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1646 false);
1647 }
1648 return;
1649 }
7560151b
QT		 1650 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1651
2d70c103 1652
e52a8b45
AP		 1653 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1654 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1655 return;
1656 }
1657
2d70c103
NB		 1658 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1659 if (rc != 0) {
1660 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1661 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1662 vha->vp_idx, rc);
1663 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1664 return;
1665 }
1666}
1667
1668/*
1669 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1670 */
1671static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1672 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1673{
1674 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1675 struct ctio7_to_24xx *ctio;
33a5fcee 1676 uint16_t temp;
2d70c103
NB		 1677
1678 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1679 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1680 ha, atio, resp_code);
1681
1682 /* Send marker if required */
1683 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1684 return;
1685
1686 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
1687 if (ctio == NULL) {
1688 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
1689 "qla_target(%d): %s failed: unable to allocate "
1690 "request packet\n", ha->vp_idx, __func__);
1691 return;
1692 }
1693
1694 ctio->entry_type = CTIO_TYPE7;
1695 ctio->entry_count = 1;
1696 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
1697 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 1698 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1699 ctio->vp_index = ha->vp_idx;
1700 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1701 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1702 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1703 ctio->exchange_addr = atio->u.isp24.exchange_addr;
1704 ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 1705 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
33a5fcee
QT		 1706 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1707 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 1708 ctio->u.status1.scsi_status =
ad950360
BVA		 1709 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
1710 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 1711 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 1712
63163e06
HM		 1713 /* Memory Barrier */
1714 wmb();
2d70c103
NB		 1715 qla2x00_start_iocbs(ha, ha->req);
1716}
1717
1718void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
1719{
1720 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1721}
1722EXPORT_SYMBOL(qlt_free_mcmd);
1723
1724/* callback from target fabric module code */
1725void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
1726{
1727 struct scsi_qla_host *vha = mcmd->sess->vha;
1728 struct qla_hw_data *ha = vha->hw;
1729 unsigned long flags;
1730
1731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
1732 "TM response mcmd (%p) status %#x state %#x",
1733 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
1734
1735 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1 1736
3bb67df5 1737 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
b6a029e1 1738 /*
3bb67df5 1739 * Either the port is not online or this request was from
b6a029e1
AE		 1740 * previous life, just abort the processing.
1741 */
1742 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 1743 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
1744 vha->flags.online, qla2x00_reset_active(vha),
1745 mcmd->reset_count, ha->chip_reset);
b6a029e1
AE		 1746 ha->tgt.tgt_ops->free_mcmd(mcmd);
1747 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1748 return;
1749 }
1750
2d70c103
NB		 1751 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
1752 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
1753 0, 0, 0, 0, 0, 0);
1754 else {
d7236ac3 1755 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2d70c103
NB		 1756 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
1757 mcmd->fc_tm_rsp, false);
1758 else
1759 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
1760 mcmd->fc_tm_rsp);
1761 }
1762 /*
1763 * Make the callback for ->free_mcmd() to queue_work() and invoke
1764 * target_put_sess_cmd() to drop cmd_kref to 1. The final
1765 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
1766 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
1767 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
1768 * qlt_xmit_tm_rsp() returns here..
1769 */
1770 ha->tgt.tgt_ops->free_mcmd(mcmd);
1771 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1772}
1773EXPORT_SYMBOL(qlt_xmit_tm_rsp);
1774
1775/* No locks */
1776static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
1777{
1778 struct qla_tgt_cmd *cmd = prm->cmd;
1779
1780 BUG_ON(cmd->sg_cnt == 0);
1781
1782 prm->sg = (struct scatterlist *)cmd->sg;
1783 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
1784 cmd->sg_cnt, cmd->dma_data_direction);
1785 if (unlikely(prm->seg_cnt == 0))
1786 goto out_err;
1787
1788 prm->cmd->sg_mapped = 1;
1789
f83adb61
QT		 1790 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
1791 /*
1792 * If greater than four sg entries then we need to allocate
1793 * the continuation entries
1794 */
1795 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
1796 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
1797 prm->tgt->datasegs_per_cmd,
1798 prm->tgt->datasegs_per_cont);
1799 } else {
1800 /* DIF */
1801 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1802 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1803 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
1804 prm->tot_dsds = prm->seg_cnt;
1805 } else
1806 prm->tot_dsds = prm->seg_cnt;
1807
1808 if (cmd->prot_sg_cnt) {
1809 prm->prot_sg = cmd->prot_sg;
1810 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
1811 cmd->prot_sg, cmd->prot_sg_cnt,
1812 cmd->dma_data_direction);
1813 if (unlikely(prm->prot_seg_cnt == 0))
1814 goto out_err;
1815
1816 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
1817 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
1818 /* Dif Bundling not support here */
1819 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
1820 cmd->blk_sz);
1821 prm->tot_dsds += prm->prot_seg_cnt;
1822 } else
1823 prm->tot_dsds += prm->prot_seg_cnt;
1824 }
1825 }
2d70c103 1826
2d70c103
NB		 1827 return 0;
1828
1829out_err:
1830 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
1831 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
1832 0, prm->cmd->sg_cnt);
1833 return -1;
1834}
1835
f9b6721a 1836static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103
NB		 1837{
1838 struct qla_hw_data *ha = vha->hw;
1839
f9b6721a
JE		 1840 if (!cmd->sg_mapped)
1841 return;
1842
2d70c103
NB		 1843 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
1844 cmd->sg_mapped = 0;
f83adb61
QT		 1845
1846 if (cmd->prot_sg_cnt)
1847 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
1848 cmd->dma_data_direction);
1849
1850 if (cmd->ctx_dsd_alloced)
1851 qla2x00_clean_dsd_pool(ha, NULL, cmd);
1852
1853 if (cmd->ctx)
1854 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 1855}
1856
1857static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
1858 uint32_t req_cnt)
1859{
d29fb736 1860 uint32_t cnt, cnt_in;
2d70c103
NB		 1861
1862 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 1863 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 1864 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 1865
2d70c103
NB		 1866 if (vha->req->ring_index < cnt)
1867 vha->req->cnt = cnt - vha->req->ring_index;
1868 else
1869 vha->req->cnt = vha->req->length -
1870 (vha->req->ring_index - cnt);
1871 }
1872
1873 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
667024a3 1874 ql_dbg(ql_dbg_io, vha, 0x305a,
d29fb736
SK		 1875 "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",
1876 vha->vp_idx, vha->req->ring_index,
1877 vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length);
2d70c103
NB		 1878 return -EAGAIN;
1879 }
1880 vha->req->cnt -= req_cnt;
1881
1882 return 0;
1883}
1884
1885/*
1886 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1887 */
1888static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
1889{
1890 /* Adjust ring index. */
1891 vha->req->ring_index++;
1892 if (vha->req->ring_index == vha->req->length) {
1893 vha->req->ring_index = 0;
1894 vha->req->ring_ptr = vha->req->ring;
1895 } else {
1896 vha->req->ring_ptr++;
1897 }
1898 return (cont_entry_t *)vha->req->ring_ptr;
1899}
1900
1901/* ha->hardware_lock supposed to be held on entry */
1902static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
1903{
1904 struct qla_hw_data *ha = vha->hw;
1905 uint32_t h;
1906
1907 h = ha->tgt.current_handle;
1908 /* always increment cmd handle */
1909 do {
1910 ++h;
8d93f550 1911 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 1912 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
1913 if (h == ha->tgt.current_handle) {
667024a3 1914 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 1915 "qla_target(%d): Ran out of "
1916 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
1917 h = QLA_TGT_NULL_HANDLE;
1918 break;
1919 }
1920 } while ((h == QLA_TGT_NULL_HANDLE) ||
1921 (h == QLA_TGT_SKIP_HANDLE) ||
1922 (ha->tgt.cmds[h-1] != NULL));
1923
1924 if (h != QLA_TGT_NULL_HANDLE)
1925 ha->tgt.current_handle = h;
1926
1927 return h;
1928}
1929
1930/* ha->hardware_lock supposed to be held on entry */
1931static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
1932 struct scsi_qla_host *vha)
1933{
1934 uint32_t h;
1935 struct ctio7_to_24xx *pkt;
1936 struct qla_hw_data *ha = vha->hw;
1937 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 1938 uint16_t temp;
2d70c103
NB		 1939
1940 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
1941 prm->pkt = pkt;
1942 memset(pkt, 0, sizeof(*pkt));
1943
1944 pkt->entry_type = CTIO_TYPE7;
1945 pkt->entry_count = (uint8_t)prm->req_cnt;
1946 pkt->vp_index = vha->vp_idx;
1947
1948 h = qlt_make_handle(vha);
1949 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1950 /*
1951 * CTIO type 7 from the firmware doesn't provide a way to
1952 * know the initiator's LOOP ID, hence we can't find
1953 * the session and, so, the command.
1954 */
1955 return -EAGAIN;
1956 } else
1957 ha->tgt.cmds[h-1] = prm->cmd;
1958
1959 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
1960 pkt->nport_handle = prm->cmd->loop_id;
ad950360 1961 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1962 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
1963 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
1964 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
1965 pkt->exchange_addr = atio->u.isp24.exchange_addr;
1966 pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
33a5fcee
QT		 1967 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
1968 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 1969 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
1970
2d70c103
NB		 1971 return 0;
1972}
1973
1974/*
1975 * ha->hardware_lock supposed to be held on entry. We have already made sure
1976 * that there is sufficient amount of request entries to not drop it.
1977 */
1978static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
1979 struct scsi_qla_host *vha)
1980{
1981 int cnt;
1982 uint32_t *dword_ptr;
1983 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
1984
1985 /* Build continuation packets */
1986 while (prm->seg_cnt > 0) {
1987 cont_a64_entry_t *cont_pkt64 =
1988 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
1989
1990 /*
1991 * Make sure that from cont_pkt64 none of
1992 * 64-bit specific fields used for 32-bit
1993 * addressing. Cast to (cont_entry_t *) for
1994 * that.
1995 */
1996
1997 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
1998
1999 cont_pkt64->entry_count = 1;
2000 cont_pkt64->sys_define = 0;
2001
2002 if (enable_64bit_addressing) {
2003 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2004 dword_ptr =
2005 (uint32_t *)&cont_pkt64->dseg_0_address;
2006 } else {
2007 cont_pkt64->entry_type = CONTINUE_TYPE;
2008 dword_ptr =
2009 (uint32_t *)&((cont_entry_t *)
2010 cont_pkt64)->dseg_0_address;
2011 }
2012
2013 /* Load continuation entry data segments */
2014 for (cnt = 0;
2015 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2016 cnt++, prm->seg_cnt--) {
2017 *dword_ptr++ =
2018 cpu_to_le32(pci_dma_lo32
2019 (sg_dma_address(prm->sg)));
2020 if (enable_64bit_addressing) {
2021 *dword_ptr++ =
2022 cpu_to_le32(pci_dma_hi32
2023 (sg_dma_address
2024 (prm->sg)));
2025 }
2026 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2027
2d70c103
NB		 2028 prm->sg = sg_next(prm->sg);
2029 }
2030 }
2031}
2032
2033/*
2034 * ha->hardware_lock supposed to be held on entry. We have already made sure
2035 * that there is sufficient amount of request entries to not drop it.
2036 */
2037static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2038 struct scsi_qla_host *vha)
2039{
2040 int cnt;
2041 uint32_t *dword_ptr;
2042 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2043 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2044
2d70c103
NB		 2045 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2046
2047 /* Setup packet address segment pointer */
2048 dword_ptr = pkt24->u.status0.dseg_0_address;
2049
2050 /* Set total data segment count */
2051 if (prm->seg_cnt)
2052 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2053
2054 if (prm->seg_cnt == 0) {
2055 /* No data transfer */
2056 *dword_ptr++ = 0;
2057 *dword_ptr = 0;
2058 return;
2059 }
2060
2061 /* If scatter gather */
2d70c103
NB		 2062
2063 /* Load command entry data segments */
2064 for (cnt = 0;
2065 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2066 cnt++, prm->seg_cnt--) {
2067 *dword_ptr++ =
2068 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2069 if (enable_64bit_addressing) {
2070 *dword_ptr++ =
2071 cpu_to_le32(pci_dma_hi32(
2072 sg_dma_address(prm->sg)));
2073 }
2074 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2075
2d70c103
NB		 2076 prm->sg = sg_next(prm->sg);
2077 }
2078
2079 qlt_load_cont_data_segments(prm, vha);
2080}
2081
2082static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2083{
2084 return cmd->bufflen > 0;
2085}
2086
2087/*
2088 * Called without ha->hardware_lock held
2089 */
2090static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2091 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2092 uint32_t *full_req_cnt)
2093{
2094 struct qla_tgt *tgt = cmd->tgt;
2095 struct scsi_qla_host *vha = tgt->vha;
2096 struct qla_hw_data *ha = vha->hw;
2097 struct se_cmd *se_cmd = &cmd->se_cmd;
2098
2d70c103
NB		 2099 prm->cmd = cmd;
2100 prm->tgt = tgt;
2101 prm->rq_result = scsi_status;
2102 prm->sense_buffer = &cmd->sense_buffer[0];
2103 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2104 prm->sg = NULL;
2105 prm->seg_cnt = -1;
2106 prm->req_cnt = 1;
2107 prm->add_status_pkt = 0;
2108
2d70c103
NB		 2109 /* Send marker if required */
2110 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2111 return -EFAULT;
2112
2d70c103
NB		 2113 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2114 if (qlt_pci_map_calc_cnt(prm) != 0)
2115 return -EAGAIN;
2116 }
2117
2118 *full_req_cnt = prm->req_cnt;
2119
2120 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2121 prm->residual = se_cmd->residual_count;
667024a3 2122 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
649ee054
BVA		 2123 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2124 prm->residual, se_cmd->tag,
2125 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2126 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2127 prm->rq_result |= SS_RESIDUAL_UNDER;
2128 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2129 prm->residual = se_cmd->residual_count;
667024a3 2130 ql_dbg(ql_dbg_io, vha, 0x305d,
649ee054
BVA		 2131 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2132 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2133 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2134 prm->rq_result |= SS_RESIDUAL_OVER;
2135 }
2136
2137 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2138 /*
2139 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2140 * ignored in *xmit_response() below
2141 */
2142 if (qlt_has_data(cmd)) {
2143 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2144 (IS_FWI2_CAPABLE(ha) &&
2145 (prm->rq_result != 0))) {
2146 prm->add_status_pkt = 1;
2147 (*full_req_cnt)++;
2148 }
2149 }
2150 }
2151
2d70c103
NB		 2152 return 0;
2153}
2154
2155static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2156 struct qla_tgt_cmd *cmd, int sending_sense)
2157{
2158 if (ha->tgt.enable_class_2)
2159 return 0;
2160
2161 if (sending_sense)
2162 return cmd->conf_compl_supported;
2163 else
2164 return ha->tgt.enable_explicit_conf &&
2165 cmd->conf_compl_supported;
2166}
2167
2168#ifdef CONFIG_QLA_TGT_DEBUG_SRR
2169/*
2170 * Original taken from the XFS code
2171 */
2172static unsigned long qlt_srr_random(void)
2173{
2174 static int Inited;
2175 static unsigned long RandomValue;
2176 static DEFINE_SPINLOCK(lock);
2177 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
2178 register long rv;
2179 register long lo;
2180 register long hi;
2181 unsigned long flags;
2182
2183 spin_lock_irqsave(&lock, flags);
2184 if (!Inited) {
2185 RandomValue = jiffies;
2186 Inited = 1;
2187 }
2188 rv = RandomValue;
2189 hi = rv / 127773;
2190 lo = rv % 127773;
2191 rv = 16807 * lo - 2836 * hi;
2192 if (rv <= 0)
2193 rv += 2147483647;
2194 RandomValue = rv;
2195 spin_unlock_irqrestore(&lock, flags);
2196 return rv;
2197}
2198
2199static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2200{
2201#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
2202 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
2203 == 50) {
2204 *xmit_type &= ~QLA_TGT_XMIT_STATUS;
2205 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
649ee054 2206 "Dropping cmd %p (tag %d) status", cmd, se_cmd->tag);
2d70c103
NB		 2207 }
2208#endif
2209 /*
2210 * It's currently not possible to simulate SRRs for FCP_WRITE without
2211 * a physical link layer failure, so don't even try here..
2212 */
2213 if (cmd->dma_data_direction != DMA_FROM_DEVICE)
2214 return;
2215
2216 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
2217 ((qlt_srr_random() % 100) == 20)) {
2218 int i, leave = 0;
2219 unsigned int tot_len = 0;
2220
2221 while (leave == 0)
2222 leave = qlt_srr_random() % cmd->sg_cnt;
2223
2224 for (i = 0; i < leave; i++)
2225 tot_len += cmd->sg[i].length;
2226
2227 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
2228 "Cutting cmd %p (tag %d) buffer"
2229 " tail to len %d, sg_cnt %d (cmd->bufflen %d,"
649ee054 2230 " cmd->sg_cnt %d)", cmd, se_cmd->tag, tot_len, leave,
2d70c103
NB		 2231 cmd->bufflen, cmd->sg_cnt);
2232
2233 cmd->bufflen = tot_len;
2234 cmd->sg_cnt = leave;
2235 }
2236
2237 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
2238 unsigned int offset = qlt_srr_random() % cmd->bufflen;
2239
2240 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
2241 "Cutting cmd %p (tag %d) buffer head "
649ee054 2242 "to offset %d (cmd->bufflen %d)", cmd, se_cmd->tag, offset,
2d70c103
NB		 2243 cmd->bufflen);
2244 if (offset == 0)
2245 *xmit_type &= ~QLA_TGT_XMIT_DATA;
2246 else if (qlt_set_data_offset(cmd, offset)) {
2247 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
649ee054 2248 "qlt_set_data_offset() failed (tag %d)", se_cmd->tag);
2d70c103
NB		 2249 }
2250 }
2251}
2252#else
2253static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
2254{}
2255#endif
2256
2257static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2258 struct qla_tgt_prm *prm)
2259{
2260 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2261 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2262 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2d70c103 2263 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ad950360 2264 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2265 CTIO7_FLAGS_EXPLICIT_CONFORM |
2266 CTIO7_FLAGS_CONFORM_REQ);
2267 }
2268 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2269 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2270 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2271 int i;
2272
2273 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
2274 if (prm->cmd->se_cmd.scsi_status != 0) {
2275 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2276 "Skipping EXPLICIT_CONFORM and "
2277 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2278 "non GOOD status\n");
2279 goto skip_explict_conf;
2280 }
ad950360 2281 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2282 CTIO7_FLAGS_EXPLICIT_CONFORM |
2283 CTIO7_FLAGS_CONFORM_REQ);
2284 }
2285skip_explict_conf:
2286 ctio->u.status1.flags &=
ad950360 2287 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2288 ctio->u.status1.flags |=
ad950360 2289 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2290 ctio->u.status1.scsi_status |=
ad950360 2291 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2292 ctio->u.status1.sense_length =
2293 cpu_to_le16(prm->sense_buffer_len);
2294 for (i = 0; i < prm->sense_buffer_len/4; i++)
2295 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2296 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
2297#if 0
2298 if (unlikely((prm->sense_buffer_len % 4) != 0)) {
2299 static int q;
2300 if (q < 10) {
2301 ql_dbg(ql_dbg_tgt, vha, 0xe04f,
2302 "qla_target(%d): %d bytes of sense "
2303 "lost", prm->tgt->ha->vp_idx,
2304 prm->sense_buffer_len % 4);
2305 q++;
2306 }
2307 }
2308#endif
2309 } else {
2310 ctio->u.status1.flags &=
ad950360 2311 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2312 ctio->u.status1.flags |=
ad950360 2313 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2314 ctio->u.status1.sense_length = 0;
2315 memset(ctio->u.status1.sense_data, 0,
2316 sizeof(ctio->u.status1.sense_data));
2317 }
2318
2319 /* Sense with len > 24, is it possible ??? */
2320}
2321
f83adb61
QT		 2322
2323
2324/* diff */
2325static inline int
2326qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2327{
2328 /*
2329 * Uncomment when corresponding SCSI changes are done.
2330 *
2331 if (!sp->cmd->prot_chk)
2332 return 0;
2333 *
2334 */
2335 switch (se_cmd->prot_op) {
2336 case TARGET_PROT_DOUT_INSERT:
2337 case TARGET_PROT_DIN_STRIP:
2338 if (ql2xenablehba_err_chk >= 1)
2339 return 1;
2340 break;
2341 case TARGET_PROT_DOUT_PASS:
2342 case TARGET_PROT_DIN_PASS:
2343 if (ql2xenablehba_err_chk >= 2)
2344 return 1;
2345 break;
2346 case TARGET_PROT_DIN_INSERT:
2347 case TARGET_PROT_DOUT_STRIP:
2348 return 1;
2349 default:
2350 break;
2351 }
2352 return 0;
2353}
2354
2355/*
2356 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
2357 *
2358 */
2359static inline void
2360qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
2361{
2362 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
2363
2364 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
2365 * have been immplemented by TCM, before AppTag is avail.
2366 * Look for modesense_handlers[]
2367 */
c7ee3bd4 2368 ctx->app_tag = 0;
f83adb61
QT		 2369 ctx->app_tag_mask[0] = 0x0;
2370 ctx->app_tag_mask[1] = 0x0;
2371
2372 switch (se_cmd->prot_type) {
2373 case TARGET_DIF_TYPE0_PROT:
2374 /*
2375 * No check for ql2xenablehba_err_chk, as it would be an
2376 * I/O error if hba tag generation is not done.
2377 */
2378 ctx->ref_tag = cpu_to_le32(lba);
2379
2380 if (!qlt_hba_err_chk_enabled(se_cmd))
2381 break;
2382
2383 /* enable ALL bytes of the ref tag */
2384 ctx->ref_tag_mask[0] = 0xff;
2385 ctx->ref_tag_mask[1] = 0xff;
2386 ctx->ref_tag_mask[2] = 0xff;
2387 ctx->ref_tag_mask[3] = 0xff;
2388 break;
2389 /*
2390 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
2391 * 16 bit app tag.
2392 */
2393 case TARGET_DIF_TYPE1_PROT:
2394 ctx->ref_tag = cpu_to_le32(lba);
2395
2396 if (!qlt_hba_err_chk_enabled(se_cmd))
2397 break;
2398
2399 /* enable ALL bytes of the ref tag */
2400 ctx->ref_tag_mask[0] = 0xff;
2401 ctx->ref_tag_mask[1] = 0xff;
2402 ctx->ref_tag_mask[2] = 0xff;
2403 ctx->ref_tag_mask[3] = 0xff;
2404 break;
2405 /*
2406 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
2407 * match LBA in CDB + N
2408 */
2409 case TARGET_DIF_TYPE2_PROT:
2410 ctx->ref_tag = cpu_to_le32(lba);
2411
2412 if (!qlt_hba_err_chk_enabled(se_cmd))
2413 break;
2414
2415 /* enable ALL bytes of the ref tag */
2416 ctx->ref_tag_mask[0] = 0xff;
2417 ctx->ref_tag_mask[1] = 0xff;
2418 ctx->ref_tag_mask[2] = 0xff;
2419 ctx->ref_tag_mask[3] = 0xff;
2420 break;
2421
2422 /* For Type 3 protection: 16 bit GUARD only */
2423 case TARGET_DIF_TYPE3_PROT:
2424 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2425 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2426 break;
2427 }
2428}
2429
2430
2431static inline int
2432qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2433{
2434 uint32_t *cur_dsd;
f83adb61
QT		 2435 uint32_t transfer_length = 0;
2436 uint32_t data_bytes;
2437 uint32_t dif_bytes;
2438 uint8_t bundling = 1;
2439 uint8_t *clr_ptr;
2440 struct crc_context *crc_ctx_pkt = NULL;
2441 struct qla_hw_data *ha;
2442 struct ctio_crc2_to_fw *pkt;
2443 dma_addr_t crc_ctx_dma;
2444 uint16_t fw_prot_opts = 0;
2445 struct qla_tgt_cmd *cmd = prm->cmd;
2446 struct se_cmd *se_cmd = &cmd->se_cmd;
2447 uint32_t h;
2448 struct atio_from_isp *atio = &prm->cmd->atio;
c7ee3bd4 2449 uint16_t t16;
f83adb61 2450
f83adb61
QT		 2451 ha = vha->hw;
2452
2453 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2454 prm->pkt = pkt;
2455 memset(pkt, 0, sizeof(*pkt));
2456
2457 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2458 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2459 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2460 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2461
2462 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2463 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2464 bundling = 0;
2465
2466 /* Compute dif len and adjust data len to incude protection */
2467 data_bytes = cmd->bufflen;
2468 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2469
2470 switch (se_cmd->prot_op) {
2471 case TARGET_PROT_DIN_INSERT:
2472 case TARGET_PROT_DOUT_STRIP:
2473 transfer_length = data_bytes;
2474 data_bytes += dif_bytes;
2475 break;
2476
2477 case TARGET_PROT_DIN_STRIP:
2478 case TARGET_PROT_DOUT_INSERT:
2479 case TARGET_PROT_DIN_PASS:
2480 case TARGET_PROT_DOUT_PASS:
2481 transfer_length = data_bytes + dif_bytes;
2482 break;
2483
2484 default:
2485 BUG();
2486 break;
2487 }
2488
2489 if (!qlt_hba_err_chk_enabled(se_cmd))
2490 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2491 /* HBA error checking enabled */
2492 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2493 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2494 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2495 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2496 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2497 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2498 }
2499
2500 switch (se_cmd->prot_op) {
2501 case TARGET_PROT_DIN_INSERT:
2502 case TARGET_PROT_DOUT_INSERT:
2503 fw_prot_opts |= PO_MODE_DIF_INSERT;
2504 break;
2505 case TARGET_PROT_DIN_STRIP:
2506 case TARGET_PROT_DOUT_STRIP:
2507 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2508 break;
2509 case TARGET_PROT_DIN_PASS:
2510 case TARGET_PROT_DOUT_PASS:
2511 fw_prot_opts |= PO_MODE_DIF_PASS;
2512 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2513 break;
2514 default:/* Normal Request */
2515 fw_prot_opts |= PO_MODE_DIF_PASS;
2516 break;
2517 }
2518
2519
2520 /* ---- PKT ---- */
2521 /* Update entry type to indicate Command Type CRC_2 IOCB */
2522 pkt->entry_type = CTIO_CRC2;
2523 pkt->entry_count = 1;
2524 pkt->vp_index = vha->vp_idx;
2525
2526 h = qlt_make_handle(vha);
2527 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2528 /*
2529 * CTIO type 7 from the firmware doesn't provide a way to
2530 * know the initiator's LOOP ID, hence we can't find
2531 * the session and, so, the command.
2532 */
2533 return -EAGAIN;
2534 } else
2535 ha->tgt.cmds[h-1] = prm->cmd;
2536
2537
2538 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2539 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2540 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2541 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2542 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2543 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2544 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2545
2546 /* silence compile warning */
2547 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2548 pkt->ox_id = cpu_to_le16(t16);
2549
2550 t16 = (atio->u.isp24.attr << 9);
2551 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2552 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2553
2554 /* Set transfer direction */
2555 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2556 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2557 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2558 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61
QT		 2559
2560
2561 pkt->dseg_count = prm->tot_dsds;
2562 /* Fibre channel byte count */
2563 pkt->transfer_length = cpu_to_le32(transfer_length);
2564
2565
2566 /* ----- CRC context -------- */
2567
2568 /* Allocate CRC context from global pool */
2569 crc_ctx_pkt = cmd->ctx =
2570 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2571
2572 if (!crc_ctx_pkt)
2573 goto crc_queuing_error;
2574
2575 /* Zero out CTX area. */
2576 clr_ptr = (uint8_t *)crc_ctx_pkt;
2577 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2578
2579 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2580 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2581
2582 /* Set handle */
2583 crc_ctx_pkt->handle = pkt->handle;
2584
2585 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
2586
2587 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2588 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2589 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2590
2591
2592 if (!bundling) {
2593 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2594 } else {
2595 /*
2596 * Configure Bundling if we need to fetch interlaving
2597 * protection PCI accesses
2598 */
2599 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2600 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2601 crc_ctx_pkt->u.bundling.dseg_count =
2602 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2603 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2604 }
2605
2606 /* Finish the common fields of CRC pkt */
2607 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2608 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2609 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 2610 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61
QT		 2611
2612
2613 /* Walks data segments */
ad950360 2614 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 2615
2616 if (!bundling && prm->prot_seg_cnt) {
2617 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
2618 prm->tot_dsds, cmd))
2619 goto crc_queuing_error;
2620 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
2621 (prm->tot_dsds - prm->prot_seg_cnt), cmd))
2622 goto crc_queuing_error;
2623
2624 if (bundling && prm->prot_seg_cnt) {
2625 /* Walks dif segments */
c7ee3bd4 2626 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2627
2628 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2629 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
2630 prm->prot_seg_cnt, cmd))
2631 goto crc_queuing_error;
2632 }
2633 return QLA_SUCCESS;
2634
2635crc_queuing_error:
2636 /* Cleanup will be performed by the caller */
2637
2638 return QLA_FUNCTION_FAILED;
2639}
2640
2641
2d70c103
NB		 2642/*
2643 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
2644 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
2645 */
2646int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
2647 uint8_t scsi_status)
2648{
2649 struct scsi_qla_host *vha = cmd->vha;
2650 struct qla_hw_data *ha = vha->hw;
2651 struct ctio7_to_24xx *pkt;
2652 struct qla_tgt_prm prm;
2653 uint32_t full_req_cnt = 0;
2654 unsigned long flags = 0;
2655 int res;
2656
a6ca8878
AP		 2657 spin_lock_irqsave(&ha->hardware_lock, flags);
2658 if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
2659 cmd->state = QLA_TGT_STATE_PROCESSED;
2660 if (cmd->sess->logout_completed)
2661 /* no need to terminate. FW already freed exchange. */
2662 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2663 else
a07100e0 2664 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
a6ca8878
AP		 2665 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2666 return 0;
2667 }
2668 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2669
2d70c103
NB		 2670 memset(&prm, 0, sizeof(prm));
2671 qlt_check_srr_debug(cmd, &xmit_type);
2672
2673 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 2674 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
2675 (xmit_type & QLA_TGT_XMIT_STATUS) ?
2676 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
2677 &cmd->se_cmd);
2d70c103
NB		 2678
2679 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
2680 &full_req_cnt);
2681 if (unlikely(res != 0)) {
2d70c103
NB		 2682 return res;
2683 }
2684
2685 spin_lock_irqsave(&ha->hardware_lock, flags);
2686
ce1025cd
HM		 2687 if (xmit_type == QLA_TGT_XMIT_STATUS)
2688 vha->tgt_counters.core_qla_snd_status++;
2689 else
2690 vha->tgt_counters.core_qla_que_buf++;
2691
3bb67df5 2692 if (!vha->flags.online || cmd->reset_count != ha->chip_reset) {
b6a029e1 2693 /*
3bb67df5 2694 * Either the port is not online or this request was from
b6a029e1
AE		 2695 * previous life, just abort the processing.
2696 */
2697 cmd->state = QLA_TGT_STATE_PROCESSED;
2698 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2699 ql_dbg(ql_dbg_async, vha, 0xe101,
3bb67df5
DKU		 2700 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
2701 vha->flags.online, qla2x00_reset_active(vha),
2702 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 2703 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2704 return 0;
2705 }
2706
2d70c103
NB		 2707 /* Does F/W have an IOCBs for this request */
2708 res = qlt_check_reserve_free_req(vha, full_req_cnt);
2709 if (unlikely(res))
2710 goto out_unmap_unlock;
2711
f83adb61
QT		 2712 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
2713 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2714 else
2715 res = qlt_24xx_build_ctio_pkt(&prm, vha);
810e30bc
QT		 2716 if (unlikely(res != 0)) {
2717 vha->req->cnt += full_req_cnt;
2d70c103 2718 goto out_unmap_unlock;
810e30bc 2719 }
2d70c103
NB		 2720
2721 pkt = (struct ctio7_to_24xx *)prm.pkt;
2722
2723 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
2724 pkt->u.status0.flags |=
ad950360 2725 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 2726 CTIO7_FLAGS_STATUS_MODE_0);
2727
f83adb61
QT		 2728 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2729 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2730
2731 if (prm.add_status_pkt == 0) {
2732 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2733 pkt->u.status0.scsi_status =
2734 cpu_to_le16(prm.rq_result);
2735 pkt->u.status0.residual =
2736 cpu_to_le32(prm.residual);
ad950360 2737 pkt->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2738 CTIO7_FLAGS_SEND_STATUS);
2739 if (qlt_need_explicit_conf(ha, cmd, 0)) {
2740 pkt->u.status0.flags |=
ad950360 2741 cpu_to_le16(
2d70c103
NB		 2742 CTIO7_FLAGS_EXPLICIT_CONFORM |
2743 CTIO7_FLAGS_CONFORM_REQ);
2744 }
2745 }
2746
2747 } else {
2748 /*
2749 * We have already made sure that there is sufficient
2750 * amount of request entries to not drop HW lock in
2751 * req_pkt().
2752 */
2753 struct ctio7_to_24xx *ctio =
2754 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
2755
667024a3
AE		 2756 ql_dbg(ql_dbg_io, vha, 0x305e,
2757 "Building additional status packet 0x%p.\n",
2758 ctio);
2d70c103 2759
f83adb61
QT		 2760 /*
2761 * T10Dif: ctio_crc2_to_fw overlay ontop of
2762 * ctio7_to_24xx
2763 */
2d70c103 2764 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 2765 /* reset back to CTIO7 */
2d70c103 2766 ctio->entry_count = 1;
f83adb61 2767 ctio->entry_type = CTIO_TYPE7;
2d70c103 2768 ctio->dseg_count = 0;
ad950360 2769 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 2770 CTIO7_FLAGS_DATA_IN);
2771
2772 /* Real finish is ctio_m1's finish */
2773 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 2774 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 2775 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 2776
2777 /* qlt_24xx_init_ctio_to_isp will correct
2778 * all neccessary fields that's part of CTIO7.
2779 * There should be no residual of CTIO-CRC2 data.
2780 */
2d70c103
NB		 2781 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
2782 &prm);
2783 pr_debug("Status CTIO7: %p\n", ctio);
2784 }
2785 } else
2786 qlt_24xx_init_ctio_to_isp(pkt, &prm);
2787
2788
2789 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 2790 cmd->cmd_sent_to_fw = 1;
2d70c103 2791
63163e06
HM		 2792 /* Memory Barrier */
2793 wmb();
2d70c103
NB		 2794 qla2x00_start_iocbs(vha, vha->req);
2795 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2796
2797 return 0;
2798
2799out_unmap_unlock:
f9b6721a 2800 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2801 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2802
2803 return res;
2804}
2805EXPORT_SYMBOL(qlt_xmit_response);
2806
2807int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
2808{
2809 struct ctio7_to_24xx *pkt;
2810 struct scsi_qla_host *vha = cmd->vha;
2811 struct qla_hw_data *ha = vha->hw;
2812 struct qla_tgt *tgt = cmd->tgt;
2813 struct qla_tgt_prm prm;
2814 unsigned long flags;
2815 int res = 0;
2816
2817 memset(&prm, 0, sizeof(prm));
2818 prm.cmd = cmd;
2819 prm.tgt = tgt;
2820 prm.sg = NULL;
2821 prm.req_cnt = 1;
2822
2823 /* Send marker if required */
2824 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2825 return -EIO;
2826
2d70c103
NB		 2827 /* Calculate number of entries and segments required */
2828 if (qlt_pci_map_calc_cnt(&prm) != 0)
2829 return -EAGAIN;
2830
2831 spin_lock_irqsave(&ha->hardware_lock, flags);
2832
3bb67df5 2833 if (!vha->flags.online || (cmd->reset_count != ha->chip_reset) ||
a6ca8878 2834 (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) {
b6a029e1 2835 /*
3bb67df5 2836 * Either the port is not online or this request was from
b6a029e1
AE		 2837 * previous life, just abort the processing.
2838 */
2839 cmd->state = QLA_TGT_STATE_NEED_DATA;
2840 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
2841 ql_dbg(ql_dbg_async, vha, 0xe102,
3bb67df5
DKU		 2842 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2843 vha->flags.online, qla2x00_reset_active(vha),
2844 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 2845 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2846 return 0;
2847 }
2848
2d70c103
NB		 2849 /* Does F/W have an IOCBs for this request */
2850 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
2851 if (res != 0)
2852 goto out_unlock_free_unmap;
f83adb61
QT		 2853 if (cmd->se_cmd.prot_op)
2854 res = qlt_build_ctio_crc2_pkt(&prm, vha);
2855 else
2856 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 2857
810e30bc
QT		 2858 if (unlikely(res != 0)) {
2859 vha->req->cnt += prm.req_cnt;
2d70c103 2860 goto out_unlock_free_unmap;
810e30bc
QT		 2861 }
2862
2d70c103 2863 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 2864 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 2865 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 2866
2867 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
2868 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 2869
2870 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 2871 cmd->cmd_sent_to_fw = 1;
2d70c103 2872
63163e06
HM		 2873 /* Memory Barrier */
2874 wmb();
2d70c103
NB		 2875 qla2x00_start_iocbs(vha, vha->req);
2876 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2877
2878 return res;
2879
2880out_unlock_free_unmap:
f9b6721a 2881 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 2882 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2883
2884 return res;
2885}
2886EXPORT_SYMBOL(qlt_rdy_to_xfer);
2887
f83adb61
QT		 2888
2889/*
2890 * Checks the guard or meta-data for the type of error
2891 * detected by the HBA.
2892 */
2893static inline int
2894qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
2895 struct ctio_crc_from_fw *sts)
2896{
2897 uint8_t *ap = &sts->actual_dif[0];
2898 uint8_t *ep = &sts->expected_dif[0];
2899 uint32_t e_ref_tag, a_ref_tag;
2900 uint16_t e_app_tag, a_app_tag;
2901 uint16_t e_guard, a_guard;
2902 uint64_t lba = cmd->se_cmd.t_task_lba;
2903
2904 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
2905 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
2906 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
2907
2908 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
2909 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
2910 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
2911
2912 ql_dbg(ql_dbg_tgt, vha, 0xe075,
2913 "iocb(s) %p Returned STATUS.\n", sts);
2914
2915 ql_dbg(ql_dbg_tgt, vha, 0xf075,
fc385045 2916 "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		 2917 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2918 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
2919
2920 /*
2921 * Ignore sector if:
2922 * For type 3: ref & app tag is all 'f's
2923 * For type 0,1,2: app tag is all 'f's
2924 */
2925 if ((a_app_tag == 0xffff) &&
2926 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
2927 (a_ref_tag == 0xffffffff))) {
2928 uint32_t blocks_done;
2929
2930 /* 2TB boundary case covered automatically with this */
2931 blocks_done = e_ref_tag - (uint32_t)lba + 1;
2932 cmd->se_cmd.bad_sector = e_ref_tag;
2933 cmd->se_cmd.pi_err = 0;
2934 ql_dbg(ql_dbg_tgt, vha, 0xf074,
2935 "need to return scsi good\n");
2936
2937 /* Update protection tag */
2938 if (cmd->prot_sg_cnt) {
52c82823 2939 uint32_t i, k = 0, num_ent;
f83adb61
QT		 2940 struct scatterlist *sg, *sgl;
2941
2942
2943 sgl = cmd->prot_sg;
2944
2945 /* Patch the corresponding protection tags */
2946 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
2947 num_ent = sg_dma_len(sg) / 8;
2948 if (k + num_ent < blocks_done) {
2949 k += num_ent;
2950 continue;
2951 }
f83adb61
QT		 2952 k = blocks_done;
2953 break;
2954 }
2955
2956 if (k != blocks_done) {
2957 ql_log(ql_log_warn, vha, 0xf076,
2958 "unexpected tag values tag:lba=%u:%llu)\n",
2959 e_ref_tag, (unsigned long long)lba);
2960 goto out;
2961 }
2962
2963#if 0
2964 struct sd_dif_tuple *spt;
2965 /* TODO:
2966 * This section came from initiator. Is it valid here?
2967 * should ulp be override with actual val???
2968 */
2969 spt = page_address(sg_page(sg)) + sg->offset;
2970 spt += j;
2971
2972 spt->app_tag = 0xffff;
2973 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
2974 spt->ref_tag = 0xffffffff;
2975#endif
2976 }
2977
2978 return 0;
2979 }
2980
2981 /* check guard */
2982 if (e_guard != a_guard) {
2983 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
2984 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
2985
2986 ql_log(ql_log_warn, vha, 0xe076,
2987 "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",
2988 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
2989 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
2990 a_guard, e_guard, cmd);
2991 goto out;
2992 }
2993
2994 /* check ref tag */
2995 if (e_ref_tag != a_ref_tag) {
2996 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
2997 cmd->se_cmd.bad_sector = e_ref_tag;
2998
2999 ql_log(ql_log_warn, vha, 0xe077,
3000 "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",
3001 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3002 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3003 a_guard, e_guard, cmd);
3004 goto out;
3005 }
3006
3007 /* check appl tag */
3008 if (e_app_tag != a_app_tag) {
3009 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
3010 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
3011
3012 ql_log(ql_log_warn, vha, 0xe078,
3013 "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",
3014 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
3015 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
3016 a_guard, e_guard, cmd);
3017 goto out;
3018 }
3019out:
3020 return 1;
3021}
3022
3023
a6ca8878
AP		 3024/* If hardware_lock held on entry, might drop it, then reaquire */
3025/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3026static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3027 struct imm_ntfy_from_isp *ntfy)
3028{
3029 struct nack_to_isp *nack;
3030 struct qla_hw_data *ha = vha->hw;
3031 request_t *pkt;
3032 int ret = 0;
3033
3034 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3035 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3036
3037 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
3038 if (pkt == NULL) {
3039 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3040 "qla_target(%d): %s failed: unable to allocate "
3041 "request packet\n", vha->vp_idx, __func__);
3042 return -ENOMEM;
3043 }
3044
3045 pkt->entry_type = NOTIFY_ACK_TYPE;
3046 pkt->entry_count = 1;
3047 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3048
3049 nack = (struct nack_to_isp *)pkt;
3050 nack->ox_id = ntfy->ox_id;
3051
3052 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3053 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3054 nack->u.isp24.flags = ntfy->u.isp24.flags &
3055 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3056 }
3057
3058 /* terminate */
3059 nack->u.isp24.flags |=
3060 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3061
3062 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3063 nack->u.isp24.status = ntfy->u.isp24.status;
3064 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3065 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3066 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3067 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3068 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3069 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3070
3071 qla2x00_start_iocbs(vha, vha->req);
3072 return ret;
3073}
3074
3075static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3076 struct imm_ntfy_from_isp *imm, int ha_locked)
3077{
3078 unsigned long flags = 0;
3079 int rc;
3080
3081 if (qlt_issue_marker(vha, ha_locked) < 0)
3082 return;
3083
3084 if (ha_locked) {
3085 rc = __qlt_send_term_imm_notif(vha, imm);
3086
3087#if 0 /* Todo */
3088 if (rc == -ENOMEM)
3089 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3090#endif
3091 goto done;
3092 }
3093
3094 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3095 rc = __qlt_send_term_imm_notif(vha, imm);
3096
3097#if 0 /* Todo */
3098 if (rc == -ENOMEM)
3099 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3100#endif
3101
3102done:
3103 if (!ha_locked)
3104 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3105}
3106
2d70c103
NB		 3107/* If hardware_lock held on entry, might drop it, then reaquire */
3108/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3109static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3110 struct qla_tgt_cmd *cmd,
3111 struct atio_from_isp *atio)
3112{
3113 struct ctio7_to_24xx *ctio24;
3114 struct qla_hw_data *ha = vha->hw;
3115 request_t *pkt;
3116 int ret = 0;
33a5fcee 3117 uint16_t temp;
2d70c103
NB		 3118
3119 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
3120
b6a029e1 3121 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 3122 if (pkt == NULL) {
3123 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3124 "qla_target(%d): %s failed: unable to allocate "
3125 "request packet\n", vha->vp_idx, __func__);
3126 return -ENOMEM;
3127 }
3128
3129 if (cmd != NULL) {
3130 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3131 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3132 "qla_target(%d): Terminating cmd %p with "
3133 "incorrect state %d\n", vha->vp_idx, cmd,
3134 cmd->state);
3135 } else
3136 ret = 1;
3137 }
3138
ce1025cd 3139 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3140 pkt->entry_count = 1;
3141 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3142
3143 ctio24 = (struct ctio7_to_24xx *)pkt;
3144 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3145 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3146 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3147 ctio24->vp_index = vha->vp_idx;
3148 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3149 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3150 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3151 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
3152 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 3153 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
2d70c103 3154 CTIO7_FLAGS_TERMINATE);
33a5fcee
QT		 3155 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3156 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3157
3158 /* Most likely, it isn't needed */
3159 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3160 &atio->u.isp24.fcp_cmnd.add_cdb[
3161 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3162 if (ctio24->u.status1.residual != 0)
3163 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3164
63163e06
HM		 3165 /* Memory Barrier */
3166 wmb();
2d70c103
NB		 3167 qla2x00_start_iocbs(vha, vha->req);
3168 return ret;
3169}
3170
3171static void qlt_send_term_exchange(struct scsi_qla_host *vha,
a07100e0
QT		 3172 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3173 int ul_abort)
2d70c103 3174{
6bc85dd5 3175 unsigned long flags = 0;
2d70c103
NB		 3176 int rc;
3177
3178 if (qlt_issue_marker(vha, ha_locked) < 0)
3179 return;
3180
3181 if (ha_locked) {
3182 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3183 if (rc == -ENOMEM)
3184 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3185 goto done;
3186 }
3187 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3188 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3189 if (rc == -ENOMEM)
3190 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3191
2d70c103 3192done:
a07100e0 3193 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3194 if (cmd->sg_mapped)
3195 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3196 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3197 }
6bc85dd5
HM		 3198
3199 if (!ha_locked)
3200 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3201
7b898542 3202 return;
2d70c103
NB		 3203}
3204
33e79977
QT		 3205static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3206{
3207 struct list_head free_list;
3208 struct qla_tgt_cmd *cmd, *tcmd;
3209
3210 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3211 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3212
3213 cmd = tcmd = NULL;
3214 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3215 INIT_LIST_HEAD(&free_list);
3216 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3217
3218 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3219 list_del(&cmd->cmd_list);
3220 /* This cmd was never sent to TCM. There is no need
3221 * to schedule free or call free_cmd
3222 */
3223 qlt_free_cmd(cmd);
3224 vha->hw->tgt.num_qfull_cmds_alloc--;
3225 }
3226 }
3227 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3228}
3229
3230static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3231{
3232 uint32_t total_leaked;
3233
3234 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3235
3236 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3237 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3238
3239 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3240 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3241 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3242
3243 if (IS_P3P_TYPE(vha->hw))
3244 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3245 else
3246 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3247 qla2xxx_wake_dpc(vha);
3248 }
3249
3250}
3251
a07100e0 3252int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3253{
3254 struct qla_tgt *tgt = cmd->tgt;
3255 struct scsi_qla_host *vha = tgt->vha;
3256 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3257 unsigned long flags;
7359df25
AP		 3258
3259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3260 "qla_target(%d): terminating exchange for aborted cmd=%p "
3261 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3262 se_cmd->tag);
3263
a07100e0
QT		 3264 spin_lock_irqsave(&cmd->cmd_lock, flags);
3265 if (cmd->aborted) {
3266 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3267 /*
3268 * It's normal to see 2 calls in this path:
3269 * 1) XFER Rdy completion + CMD_T_ABORT
3270 * 2) TCM TMR - drain_state_list
3271 */
3272 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
3273 "multiple abort. %p transport_state %x, t_state %x,"
3274 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state,
3275 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags);
3276 return EIO;
3277 }
193b50b9 3278 cmd->aborted = 1;
7359df25 3279 cmd->cmd_flags |= BIT_6;
a07100e0 3280 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3281
a07100e0
QT		 3282 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
3283 return 0;
7359df25
AP		 3284}
3285EXPORT_SYMBOL(qlt_abort_cmd);
3286
2d70c103
NB		 3287void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3288{
51a07f84
NB		 3289 struct qla_tgt_sess *sess = cmd->sess;
3290
f83adb61
QT		 3291 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3292 "%s: se_cmd[%p] ox_id %04x\n",
3293 __func__, &cmd->se_cmd,
3294 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3295
e07f8f65
SK		 3296 BUG_ON(cmd->cmd_in_wq);
3297
a07100e0
QT		 3298 if (cmd->sg_mapped)
3299 qlt_unmap_sg(cmd->vha, cmd);
3300
33e79977
QT		 3301 if (!cmd->q_full)
3302 qlt_decr_num_pend_cmds(cmd->vha);
3303
f83adb61 3304 BUG_ON(cmd->sg_mapped);
e07f8f65 3305 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3306 if (unlikely(cmd->free_sg))
3307 kfree(cmd->sg);
51a07f84
NB		 3308
3309 if (!sess || !sess->se_sess) {
3310 WARN_ON(1);
3311 return;
3312 }
e07f8f65 3313 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3314 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3315}
3316EXPORT_SYMBOL(qlt_free_cmd);
3317
3318/* ha->hardware_lock supposed to be held on entry */
3319static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
3320 struct qla_tgt_cmd *cmd, void *ctio)
3321{
3322 struct qla_tgt_srr_ctio *sc;
0e8cd71c 3323 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 3324 struct qla_tgt_srr_imm *imm;
3325
3326 tgt->ctio_srr_id++;
e07f8f65 3327 cmd->cmd_flags |= BIT_15;
2d70c103
NB		 3328
3329 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
3330 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
3331
3332 if (!ctio) {
3333 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
3334 "qla_target(%d): SRR CTIO, but ctio is NULL\n",
3335 vha->vp_idx);
3336 return -EINVAL;
3337 }
3338
3339 sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
3340 if (sc != NULL) {
3341 sc->cmd = cmd;
3342 /* IRQ is already OFF */
3343 spin_lock(&tgt->srr_lock);
3344 sc->srr_id = tgt->ctio_srr_id;
3345 list_add_tail(&sc->srr_list_entry,
3346 &tgt->srr_ctio_list);
3347 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
3348 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
3349 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
3350 int found = 0;
3351 list_for_each_entry(imm, &tgt->srr_imm_list,
3352 srr_list_entry) {
3353 if (imm->srr_id == sc->srr_id) {
3354 found = 1;
3355 break;
3356 }
3357 }
3358 if (found) {
3359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
3360 "Scheduling srr work\n");
3361 schedule_work(&tgt->srr_work);
3362 } else {
3363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
3364 "qla_target(%d): imm_srr_id "
3365 "== ctio_srr_id (%d), but there is no "
3366 "corresponding SRR IMM, deleting CTIO "
3367 "SRR %p\n", vha->vp_idx,
3368 tgt->ctio_srr_id, sc);
3369 list_del(&sc->srr_list_entry);
3370 spin_unlock(&tgt->srr_lock);
3371
3372 kfree(sc);
3373 return -EINVAL;
3374 }
3375 }
3376 spin_unlock(&tgt->srr_lock);
3377 } else {
3378 struct qla_tgt_srr_imm *ti;
3379
3380 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
3381 "qla_target(%d): Unable to allocate SRR CTIO entry\n",
3382 vha->vp_idx);
3383 spin_lock(&tgt->srr_lock);
3384 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
3385 srr_list_entry) {
3386 if (imm->srr_id == tgt->ctio_srr_id) {
3387 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
3388 "IMM SRR %p deleted (id %d)\n",
3389 imm, imm->srr_id);
3390 list_del(&imm->srr_list_entry);
3391 qlt_reject_free_srr_imm(vha, imm, 1);
3392 }
3393 }
3394 spin_unlock(&tgt->srr_lock);
3395
3396 return -ENOMEM;
3397 }
3398
3399 return 0;
3400}
3401
3402/*
3403 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3404 */
3405static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3406 struct qla_tgt_cmd *cmd, uint32_t status)
3407{
3408 int term = 0;
3409
3410 if (ctio != NULL) {
3411 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3412 term = !(c->flags &
ad950360 3413 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3414 } else
3415 term = 1;
3416
3417 if (term)
a07100e0 3418 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3419
3420 return term;
3421}
3422
3423/* ha->hardware_lock supposed to be held on entry */
3424static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3425 uint32_t handle)
3426{
3427 struct qla_hw_data *ha = vha->hw;
3428
3429 handle--;
3430 if (ha->tgt.cmds[handle] != NULL) {
3431 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3432 ha->tgt.cmds[handle] = NULL;
3433 return cmd;
3434 } else
3435 return NULL;
3436}
3437
3438/* ha->hardware_lock supposed to be held on entry */
3439static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3440 uint32_t handle, void *ctio)
3441{
3442 struct qla_tgt_cmd *cmd = NULL;
3443
3444 /* Clear out internal marks */
3445 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3446 CTIO_INTERMEDIATE_HANDLE_MARK);
3447
3448 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 3449 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 3450 return NULL;
667024a3 3451
2d70c103 3452 /* handle-1 is actually used */
8d93f550 3453 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 3454 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3455 "qla_target(%d): Wrong handle %x received\n",
3456 vha->vp_idx, handle);
3457 return NULL;
3458 }
3459 cmd = qlt_get_cmd(vha, handle);
3460 if (unlikely(cmd == NULL)) {
3461 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3462 "qla_target(%d): Suspicious: unable to "
3463 "find the command with handle %x\n", vha->vp_idx,
3464 handle);
3465 return NULL;
3466 }
3467 } else if (ctio != NULL) {
3468 /* We can't get loop ID from CTIO7 */
3469 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3470 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3471 "support NULL handles\n", vha->vp_idx);
3472 return NULL;
3473 }
3474
3475 return cmd;
3476}
3477
c0cb4496
AE		 3478/* hardware_lock should be held by caller. */
3479static void
3480qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3481{
3482 struct qla_hw_data *ha = vha->hw;
3483 uint32_t handle;
3484
3485 if (cmd->sg_mapped)
3486 qlt_unmap_sg(vha, cmd);
3487
3488 handle = qlt_make_handle(vha);
3489
3490 /* TODO: fix debug message type and ids. */
3491 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3492 ql_dbg(ql_dbg_io, vha, 0xff00,
3493 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3494 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3495 cmd->write_data_transferred = 0;
3496 cmd->state = QLA_TGT_STATE_DATA_IN;
3497
3498 ql_dbg(ql_dbg_io, vha, 0xff01,
3499 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3500
3501 ha->tgt.tgt_ops->handle_data(cmd);
3502 return;
c0cb4496
AE		 3503 } else {
3504 ql_dbg(ql_dbg_io, vha, 0xff03,
3505 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3506 cmd->state);
3507 dump_stack();
3508 }
3509
e5fdee87 3510 cmd->cmd_flags |= BIT_17;
c0cb4496
AE		 3511 ha->tgt.tgt_ops->free_cmd(cmd);
3512}
3513
3514void
3515qlt_host_reset_handler(struct qla_hw_data *ha)
3516{
3517 struct qla_tgt_cmd *cmd;
3518 unsigned long flags;
3519 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3520 scsi_qla_host_t *vha = NULL;
3521 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3522 uint32_t i;
3523
3524 if (!base_vha->hw->tgt.tgt_ops)
3525 return;
3526
3527 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3528 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3529 "Target mode disabled\n");
3530 return;
3531 }
3532
3533 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3534 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3535 base_vha->dpc_flags);
3536
3537 spin_lock_irqsave(&ha->hardware_lock, flags);
3538 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3539 cmd = qlt_get_cmd(base_vha, i);
3540 if (!cmd)
3541 continue;
3542 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3543 vha = cmd->vha;
3544 qlt_abort_cmd_on_host_reset(vha, cmd);
3545 }
3546 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3547}
3548
3549
2d70c103
NB		 3550/*
3551 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3552 */
3553static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3554 uint32_t status, void *ctio)
3555{
3556 struct qla_hw_data *ha = vha->hw;
3557 struct se_cmd *se_cmd;
2d70c103
NB		 3558 struct qla_tgt_cmd *cmd;
3559
2d70c103
NB		 3560 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3561 /* That could happen only in case of an error/reset/abort */
3562 if (status != CTIO_SUCCESS) {
3563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3564 "Intermediate CTIO received"
3565 " (status %x)\n", status);
3566 }
3567 return;
3568 }
3569
3570 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 3571 if (cmd == NULL)
2d70c103 3572 return;
092e1dc3 3573
2d70c103 3574 se_cmd = &cmd->se_cmd;
d564a372 3575 cmd->cmd_sent_to_fw = 0;
2d70c103 3576
f9b6721a 3577 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3578
3579 if (unlikely(status != CTIO_SUCCESS)) {
3580 switch (status & 0xFFFF) {
3581 case CTIO_LIP_RESET:
3582 case CTIO_TARGET_RESET:
3583 case CTIO_ABORTED:
7b898542 3584 /* driver request abort via Terminate exchange */
2d70c103
NB		 3585 case CTIO_TIMEOUT:
3586 case CTIO_INVALID_RX_ID:
3587 /* They are OK */
3588 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3589 "qla_target(%d): CTIO with "
3590 "status %#x received, state %x, se_cmd %p, "
3591 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3592 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3593 status, cmd->state, se_cmd);
3594 break;
3595
3596 case CTIO_PORT_LOGGED_OUT:
3597 case CTIO_PORT_UNAVAILABLE:
71cdc079 3598 {
dacb5822
HM		 3599 int logged_out =
3600 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3601
2d70c103 3602 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3603 "qla_target(%d): CTIO with %s status %x "
2d70c103 3604 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3605 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3606 status, cmd->state, se_cmd);
2d70c103 3607
71cdc079
AP		 3608 if (logged_out && cmd->sess) {
3609 /*
3610 * Session is already logged out, but we need
3611 * to notify initiator, who's not aware of this
3612 */
3613 cmd->sess->logout_on_delete = 0;
3614 cmd->sess->send_els_logo = 1;
3615 qlt_schedule_sess_for_deletion(cmd->sess, true);
3616 }
3617 break;
3618 }
2d70c103
NB		 3619 case CTIO_SRR_RECEIVED:
3620 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
3621 "qla_target(%d): CTIO with SRR_RECEIVED"
3622 " status %x received (state %x, se_cmd %p)\n",
3623 vha->vp_idx, status, cmd->state, se_cmd);
3624 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
3625 break;
3626 else
3627 return;
3628
f83adb61
QT		 3629 case CTIO_DIF_ERROR: {
3630 struct ctio_crc_from_fw *crc =
3631 (struct ctio_crc_from_fw *)ctio;
3632 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
3633 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
3634 vha->vp_idx, status, cmd->state, se_cmd,
3635 *((u64 *)&crc->actual_dif[0]),
3636 *((u64 *)&crc->expected_dif[0]));
3637
3638 if (qlt_handle_dif_error(vha, cmd, ctio)) {
3639 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3640 /* scsi Write/xfer rdy complete */
3641 goto skip_term;
3642 } else {
3643 /* scsi read/xmit respond complete
3644 * call handle dif to send scsi status
3645 * rather than terminate exchange.
3646 */
3647 cmd->state = QLA_TGT_STATE_PROCESSED;
3648 ha->tgt.tgt_ops->handle_dif_err(cmd);
3649 return;
3650 }
3651 } else {
3652 /* Need to generate a SCSI good completion.
3653 * because FW did not send scsi status.
3654 */
3655 status = 0;
3656 goto skip_term;
3657 }
3658 break;
3659 }
2d70c103
NB		 3660 default:
3661 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3662 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3663 vha->vp_idx, status, cmd->state, se_cmd);
3664 break;
3665 }
3666
7b898542 3667
193b50b9 3668 /* "cmd->aborted" means
7b898542
QT		 3669 * cmd is already aborted/terminated, we don't
3670 * need to terminate again. The exchange is already
3671 * cleaned up/freed at FW level. Just cleanup at driver
3672 * level.
3673 */
3674 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3675 (!cmd->aborted)) {
e07f8f65 3676 cmd->cmd_flags |= BIT_13;
2d70c103
NB		 3677 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3678 return;
7b898542 3679 }
2d70c103 3680 }
f83adb61 3681skip_term:
2d70c103
NB		 3682
3683 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
e5fdee87 3684 cmd->cmd_flags |= BIT_12;
2d70c103 3685 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3686 cmd->state = QLA_TGT_STATE_DATA_IN;
3687
52c82823 3688 if (status == CTIO_SUCCESS)
2d70c103
NB		 3689 cmd->write_data_transferred = 1;
3690
2d70c103
NB		 3691 ha->tgt.tgt_ops->handle_data(cmd);
3692 return;
193b50b9 3693 } else if (cmd->aborted) {
e5fdee87 3694 cmd->cmd_flags |= BIT_18;
2d70c103 3695 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3696 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3697 } else {
e5fdee87 3698 cmd->cmd_flags |= BIT_19;
2d70c103
NB		 3699 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3700 "qla_target(%d): A command in state (%d) should "
3701 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3702 }
3703
7b898542 3704 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3705 !cmd->aborted) {
2d70c103
NB		 3706 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3707 dump_stack();
3708 }
3709
3710 ha->tgt.tgt_ops->free_cmd(cmd);
3711}
3712
2d70c103
NB		 3713static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3714 uint8_t task_codes)
3715{
3716 int fcp_task_attr;
3717
3718 switch (task_codes) {
3719 case ATIO_SIMPLE_QUEUE:
68d81f40 3720 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3721 break;
3722 case ATIO_HEAD_OF_QUEUE:
68d81f40 3723 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3724 break;
3725 case ATIO_ORDERED_QUEUE:
68d81f40 3726 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3727 break;
3728 case ATIO_ACA_QUEUE:
68d81f40 3729 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3730 break;
3731 case ATIO_UNTAGGED:
68d81f40 3732 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3733 break;
3734 default:
3735 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3736 "qla_target: unknown task code %x, use ORDERED instead\n",
3737 task_codes);
68d81f40 3738 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3739 break;
3740 }
3741
3742 return fcp_task_attr;
3743}
3744
3745static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
3746 uint8_t *);
3747/*
3748 * Process context for I/O path into tcm_qla2xxx code
3749 */
51a07f84 3750static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3751{
2d70c103
NB		 3752 scsi_qla_host_t *vha = cmd->vha;
3753 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3754 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3755 struct qla_tgt_sess *sess = cmd->sess;
2d70c103
NB		 3756 struct atio_from_isp *atio = &cmd->atio;
3757 unsigned char *cdb;
3758 unsigned long flags;
3759 uint32_t data_length;
3760 int ret, fcp_task_attr, data_dir, bidi = 0;
3761
e07f8f65
SK		 3762 cmd->cmd_in_wq = 0;
3763 cmd->cmd_flags |= BIT_1;
2d70c103
NB		 3764 if (tgt->tgt_stop)
3765 goto out_term;
3766
193b50b9 3767 if (cmd->aborted) {
8b2f5ff3
SN		 3768 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
3769 "cmd with tag %u is aborted\n",
3770 cmd->atio.u.isp24.exchange_addr);
3771 goto out_term;
3772 }
3773
a07100e0 3774 spin_lock_init(&cmd->cmd_lock);
2d70c103 3775 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 3776 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 3777 cmd->unpacked_lun = scsilun_to_int(
3778 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
3779
3780 if (atio->u.isp24.fcp_cmnd.rddata &&
3781 atio->u.isp24.fcp_cmnd.wrdata) {
3782 bidi = 1;
3783 data_dir = DMA_TO_DEVICE;
3784 } else if (atio->u.isp24.fcp_cmnd.rddata)
3785 data_dir = DMA_FROM_DEVICE;
3786 else if (atio->u.isp24.fcp_cmnd.wrdata)
3787 data_dir = DMA_TO_DEVICE;
3788 else
3789 data_dir = DMA_NONE;
3790
3791 fcp_task_attr = qlt_get_fcp_task_attr(vha,
3792 atio->u.isp24.fcp_cmnd.task_attr);
3793 data_length = be32_to_cpu(get_unaligned((uint32_t *)
3794 &atio->u.isp24.fcp_cmnd.add_cdb[
3795 atio->u.isp24.fcp_cmnd.add_cdb_len]));
3796
51a07f84
NB		 3797 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
3798 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 3799 if (ret != 0)
3800 goto out_term;
3801 /*
3802 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
3803 */
7560151b 3804 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 3805 ha->tgt.tgt_ops->put_sess(sess);
7560151b 3806 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 3807 return;
3808
3809out_term:
667024a3 3810 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 3811 /*
fae9eaf8
RD		 3812 * cmd has not sent to target yet, so pass NULL as the second
3813 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 3814 */
e07f8f65 3815 cmd->cmd_flags |= BIT_2;
2d70c103 3816 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 3817 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
33e79977
QT		 3818
3819 qlt_decr_num_pend_cmds(vha);
51a07f84 3820 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
51a07f84 3821 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7560151b
QT		 3822
3823 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
3824 ha->tgt.tgt_ops->put_sess(sess);
3825 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 3826}
3827
3828static void qlt_do_work(struct work_struct *work)
3829{
3830 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 3831 scsi_qla_host_t *vha = cmd->vha;
3832 unsigned long flags;
3833
3834 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3835 list_del(&cmd->cmd_list);
3836 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 3837
3838 __qlt_do_work(cmd);
3839}
3840
3841static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
3842 struct qla_tgt_sess *sess,
3843 struct atio_from_isp *atio)
3844{
3845 struct se_session *se_sess = sess->se_sess;
3846 struct qla_tgt_cmd *cmd;
3847 int tag;
3848
3849 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
3850 if (tag < 0)
3851 return NULL;
3852
3853 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
3854 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
3855
3856 memcpy(&cmd->atio, atio, sizeof(*atio));
3857 cmd->state = QLA_TGT_STATE_NEW;
3858 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 3859 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 3860 cmd->vha = vha;
3861 cmd->se_cmd.map_tag = tag;
3862 cmd->sess = sess;
3863 cmd->loop_id = sess->loop_id;
3864 cmd->conf_compl_supported = sess->conf_compl_supported;
3865
9fce1254
KS		 3866 cmd->cmd_flags = 0;
3867 cmd->jiffies_at_alloc = get_jiffies_64();
3868
3869 cmd->reset_count = vha->hw->chip_reset;
3870
51a07f84
NB		 3871 return cmd;
3872}
3873
3874static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
3875 uint16_t);
3876
3877static void qlt_create_sess_from_atio(struct work_struct *work)
3878{
3879 struct qla_tgt_sess_op *op = container_of(work,
3880 struct qla_tgt_sess_op, work);
3881 scsi_qla_host_t *vha = op->vha;
3882 struct qla_hw_data *ha = vha->hw;
3883 struct qla_tgt_sess *sess;
3884 struct qla_tgt_cmd *cmd;
3885 unsigned long flags;
3886 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
3887
8b2f5ff3
SN		 3888 spin_lock_irqsave(&vha->cmd_list_lock, flags);
3889 list_del(&op->cmd_list);
3890 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
3891
3892 if (op->aborted) {
3893 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
3894 "sess_op with tag %u is aborted\n",
3895 op->atio.u.isp24.exchange_addr);
3896 goto out_term;
3897 }
3898
51a07f84 3899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 3900 "qla_target(%d): Unable to find wwn login"
3901 " (s_id %x:%x:%x), trying to create it manually\n",
3902 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 3903
3904 if (op->atio.u.raw.entry_count > 1) {
3905 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 3906 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 3907 goto out_term;
3908 }
3909
51a07f84
NB		 3910 sess = qlt_make_local_sess(vha, s_id);
3911 /* sess has an extra creation ref. */
51a07f84
NB		 3912
3913 if (!sess)
3914 goto out_term;
3915 /*
3916 * Now obtain a pre-allocated session tag using the original op->atio
3917 * packet header, and dispatch into __qlt_do_work() using the existing
3918 * process context.
3919 */
3920 cmd = qlt_get_tag(vha, sess, &op->atio);
3921 if (!cmd) {
3922 spin_lock_irqsave(&ha->hardware_lock, flags);
3923 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
2d70c103 3924 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 3925 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3926 kfree(op);
3927 return;
3928 }
3929 /*
3930 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release
3931 * the extra reference taken above by qlt_make_local_sess()
3932 */
3933 __qlt_do_work(cmd);
3934 kfree(op);
3935 return;
3936
3937out_term:
3938 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 3939 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
08234e3a 3940 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84
NB		 3941 kfree(op);
3942
2d70c103
NB		 3943}
3944
3945/* ha->hardware_lock supposed to be held on entry */
3946static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
3947 struct atio_from_isp *atio)
3948{
51a07f84 3949 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3950 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
51a07f84 3951 struct qla_tgt_sess *sess;
2d70c103
NB		 3952 struct qla_tgt_cmd *cmd;
3953
3954 if (unlikely(tgt->tgt_stop)) {
667024a3 3955 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 3956 "New command while device %p is shutting down\n", tgt);
3957 return -EFAULT;
3958 }
3959
51a07f84
NB		 3960 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
3961 if (unlikely(!sess)) {
3962 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
3963 GFP_ATOMIC);
3964 if (!op)
3965 return -ENOMEM;
3966
3967 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 3968 op->vha = vha;
8b2f5ff3
SN		 3969
3970 spin_lock(&vha->cmd_list_lock);
3971 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
3972 spin_unlock(&vha->cmd_list_lock);
3973
51a07f84
NB		 3974 INIT_WORK(&op->work, qlt_create_sess_from_atio);
3975 queue_work(qla_tgt_wq, &op->work);
3976 return 0;
3977 }
e52a8b45
AP		 3978
3979 /* Another WWN used to have our s_id. Our PLOGI scheduled its
3980 * session deletion, but it's still in sess_del_work wq */
3981 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
3982 ql_dbg(ql_dbg_io, vha, 0x3061,
3983 "New command while old session %p is being deleted\n",
3984 sess);
3985 return -EFAULT;
3986 }
3987
51a07f84
NB		 3988 /*
3989 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
3990 */
3991 kref_get(&sess->se_sess->sess_kref);
3992
3993 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 3994 if (!cmd) {
667024a3 3995 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 3996 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
51a07f84 3997 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 3998 return -ENOMEM;
3999 }
4000
e07f8f65
SK		 4001 cmd->cmd_in_wq = 1;
4002 cmd->cmd_flags |= BIT_0;
5327c7db
QT		 4003 cmd->se_cmd.cpuid = ha->msix_count ?
4004 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
8b2f5ff3
SN		 4005
4006 spin_lock(&vha->cmd_list_lock);
4007 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
4008 spin_unlock(&vha->cmd_list_lock);
4009
2d70c103 4010 INIT_WORK(&cmd->work, qlt_do_work);
fb3269ba 4011 if (ha->msix_count) {
fb3269ba
QT		 4012 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4013 queue_work_on(smp_processor_id(), qla_tgt_wq,
4014 &cmd->work);
4015 else
4016 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4017 &cmd->work);
4018 } else {
4019 queue_work(qla_tgt_wq, &cmd->work);
4020 }
2d70c103
NB		 4021 return 0;
4022
4023}
4024
4025/* ha->hardware_lock supposed to be held on entry */
4026static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
4027 int fn, void *iocb, int flags)
4028{
4029 struct scsi_qla_host *vha = sess->vha;
4030 struct qla_hw_data *ha = vha->hw;
4031 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4032 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103
NB		 4033 int res;
4034 uint8_t tmr_func;
4035
4036 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4037 if (!mcmd) {
4038 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4039 "qla_target(%d): Allocation of management "
4040 "command failed, some commands and their data could "
4041 "leak\n", vha->vp_idx);
4042 return -ENOMEM;
4043 }
4044 memset(mcmd, 0, sizeof(*mcmd));
4045 mcmd->sess = sess;
4046
4047 if (iocb) {
4048 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4049 sizeof(mcmd->orig_iocb.imm_ntfy));
4050 }
4051 mcmd->tmr_func = fn;
4052 mcmd->flags = flags;
b6a029e1 4053 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4054
4055 switch (fn) {
4056 case QLA_TGT_CLEAR_ACA:
4057 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
4058 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
4059 tmr_func = TMR_CLEAR_ACA;
4060 break;
4061
4062 case QLA_TGT_TARGET_RESET:
4063 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
4064 "qla_target(%d): TARGET_RESET received\n",
4065 sess->vha->vp_idx);
4066 tmr_func = TMR_TARGET_WARM_RESET;
4067 break;
4068
4069 case QLA_TGT_LUN_RESET:
4070 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
4071 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
4072 tmr_func = TMR_LUN_RESET;
8b2f5ff3 4073 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
2d70c103
NB		 4074 break;
4075
4076 case QLA_TGT_CLEAR_TS:
4077 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
4078 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
4079 tmr_func = TMR_CLEAR_TASK_SET;
4080 break;
4081
4082 case QLA_TGT_ABORT_TS:
4083 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
4084 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
4085 tmr_func = TMR_ABORT_TASK_SET;
4086 break;
4087#if 0
4088 case QLA_TGT_ABORT_ALL:
4089 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
4090 "qla_target(%d): Doing ABORT_ALL_TASKS\n",
4091 sess->vha->vp_idx);
4092 tmr_func = 0;
4093 break;
4094
4095 case QLA_TGT_ABORT_ALL_SESS:
4096 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
4097 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
4098 sess->vha->vp_idx);
4099 tmr_func = 0;
4100 break;
4101
4102 case QLA_TGT_NEXUS_LOSS_SESS:
4103 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
4104 "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
4105 sess->vha->vp_idx);
4106 tmr_func = 0;
4107 break;
4108
4109 case QLA_TGT_NEXUS_LOSS:
4110 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
4111 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
4112 tmr_func = 0;
4113 break;
4114#endif
4115 default:
4116 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
4117 "qla_target(%d): Unknown task mgmt fn 0x%x\n",
4118 sess->vha->vp_idx, fn);
4119 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4120 return -ENOSYS;
4121 }
4122
4123 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
4124 if (res != 0) {
4125 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4126 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4127 sess->vha->vp_idx, res);
4128 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4129 return -EFAULT;
4130 }
4131
4132 return 0;
4133}
4134
4135/* ha->hardware_lock supposed to be held on entry */
4136static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4137{
4138 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4139 struct qla_hw_data *ha = vha->hw;
4140 struct qla_tgt *tgt;
4141 struct qla_tgt_sess *sess;
4142 uint32_t lun, unpacked_lun;
52c82823 4143 int fn;
7560151b 4144 unsigned long flags;
2d70c103 4145
0e8cd71c 4146 tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4147
4148 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103 4149 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4150
4151 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4152 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4153 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4154 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4155
2d70c103
NB		 4156 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
4157
4158 if (!sess) {
4159 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4160 "qla_target(%d): task mgmt fn 0x%x for "
4161 "non-existant session\n", vha->vp_idx, fn);
4162 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4163 sizeof(struct atio_from_isp));
4164 }
4165
e52a8b45
AP		 4166 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)
4167 return -EFAULT;
4168
2d70c103
NB		 4169 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4170}
4171
4172/* ha->hardware_lock supposed to be held on entry */
4173static int __qlt_abort_task(struct scsi_qla_host *vha,
4174 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess)
4175{
4176 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4177 struct qla_hw_data *ha = vha->hw;
4178 struct qla_tgt_mgmt_cmd *mcmd;
4179 uint32_t lun, unpacked_lun;
4180 int rc;
4181
4182 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4183 if (mcmd == NULL) {
4184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4185 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4186 vha->vp_idx, __func__);
4187 return -ENOMEM;
4188 }
4189 memset(mcmd, 0, sizeof(*mcmd));
4190
4191 mcmd->sess = sess;
4192 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4193 sizeof(mcmd->orig_iocb.imm_ntfy));
4194
4195 lun = a->u.isp24.fcp_cmnd.lun;
4196 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
80187f8e 4197 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4198
4199 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
4200 le16_to_cpu(iocb->u.isp2x.seq_id));
4201 if (rc != 0) {
4202 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4203 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4204 vha->vp_idx, rc);
4205 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4206 return -EFAULT;
4207 }
4208
4209 return 0;
4210}
4211
4212/* ha->hardware_lock supposed to be held on entry */
4213static int qlt_abort_task(struct scsi_qla_host *vha,
4214 struct imm_ntfy_from_isp *iocb)
4215{
4216 struct qla_hw_data *ha = vha->hw;
4217 struct qla_tgt_sess *sess;
4218 int loop_id;
7560151b 4219 unsigned long flags;
2d70c103
NB		 4220
4221 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4222
7560151b 4223 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4224 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4225 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4226
2d70c103
NB		 4227 if (sess == NULL) {
4228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4229 "qla_target(%d): task abort for unexisting "
4230 "session\n", vha->vp_idx);
0e8cd71c 4231 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4232 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4233 }
4234
4235 return __qlt_abort_task(vha, iocb, sess);
4236}
4237
a6ca8878
AP		 4238void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4239{
4240 if (fcport->tgt_session) {
4241 if (rc != MBS_COMMAND_COMPLETE) {
df673274 4242 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
a6ca8878
AP		 4243 "%s: se_sess %p / sess %p from"
4244 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4245 " LOGO failed: %#x\n",
4246 __func__,
4247 fcport->tgt_session->se_sess,
4248 fcport->tgt_session,
4249 fcport->port_name, fcport->loop_id,
4250 fcport->d_id.b.domain, fcport->d_id.b.area,
4251 fcport->d_id.b.al_pa, rc);
4252 }
4253
4254 fcport->tgt_session->logout_completed = 1;
4255 }
4256}
4257
a6ca8878
AP		 4258/*
4259* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4260*
4261* Schedules sessions with matching port_id/loop_id but different wwn for
4262* deletion. Returns existing session with matching wwn if present.
4263* Null otherwise.
4264*/
4265static struct qla_tgt_sess *
4266qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
b7bd104e 4267 port_id_t port_id, uint16_t loop_id, struct qla_tgt_sess **conflict_sess)
a6ca8878
AP		 4268{
4269 struct qla_tgt_sess *sess = NULL, *other_sess;
4270 uint64_t other_wwn;
4271
b7bd104e
AP		 4272 *conflict_sess = NULL;
4273
a6ca8878
AP		 4274 list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) {
4275
4276 other_wwn = wwn_to_u64(other_sess->port_name);
4277
4278 if (wwn == other_wwn) {
4279 WARN_ON(sess);
4280 sess = other_sess;
4281 continue;
4282 }
4283
4284 /* find other sess with nport_id collision */
4285 if (port_id.b24 == other_sess->s_id.b24) {
4286 if (loop_id != other_sess->loop_id) {
4287 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c,
4288 "Invalidating sess %p loop_id %d wwn %llx.\n",
4289 other_sess, other_sess->loop_id, other_wwn);
4290
4291 /*
4292 * logout_on_delete is set by default, but another
4293 * session that has the same s_id/loop_id combo
4294 * might have cleared it when requested this session
4295 * deletion, so don't touch it
4296 */
4297 qlt_schedule_sess_for_deletion(other_sess, true);
4298 } else {
4299 /*
4300 * Another wwn used to have our s_id/loop_id
b7bd104e 4301 * kill the session, but don't free the loop_id
a6ca8878 4302 */
b7bd104e
AP		 4303 other_sess->keep_nport_handle = 1;
4304 *conflict_sess = other_sess;
a6ca8878
AP		 4305 qlt_schedule_sess_for_deletion(other_sess,
4306 true);
4307 }
4308 continue;
4309 }
4310
4311 /* find other sess with nport handle collision */
4312 if (loop_id == other_sess->loop_id) {
4313 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d,
4314 "Invalidating sess %p loop_id %d wwn %llx.\n",
4315 other_sess, other_sess->loop_id, other_wwn);
4316
4317 /* Same loop_id but different s_id
4318 * Ok to kill and logout */
4319 qlt_schedule_sess_for_deletion(other_sess, true);
4320 }
4321 }
4322
4323 return sess;
4324}
4325
daddf5cf
AP		 4326/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4327static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4328{
4329 struct qla_tgt_sess_op *op;
4330 struct qla_tgt_cmd *cmd;
4331 uint32_t key;
4332 int count = 0;
4333
4334 key = (((u32)s_id->b.domain << 16) |
4335 ((u32)s_id->b.area << 8) |
4336 ((u32)s_id->b.al_pa));
4337
4338 spin_lock(&vha->cmd_list_lock);
4339 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4340 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4341 if (op_key == key) {
4342 op->aborted = true;
4343 count++;
4344 }
4345 }
4346 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4347 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4348 if (cmd_key == key) {
193b50b9 4349 cmd->aborted = 1;
daddf5cf
AP		 4350 count++;
4351 }
4352 }
4353 spin_unlock(&vha->cmd_list_lock);
4354
4355 return count;
4356}
4357
2d70c103
NB		 4358/*
4359 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4360 */
4361static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4362 struct imm_ntfy_from_isp *iocb)
4363{
a6ca8878 4364 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4365 struct qla_hw_data *ha = vha->hw;
b7bd104e 4366 struct qla_tgt_sess *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4367 uint64_t wwn;
4368 port_id_t port_id;
4369 uint16_t loop_id;
4370 uint16_t wd3_lo;
2d70c103 4371 int res = 0;
b7bd104e 4372 qlt_plogi_ack_t *pla;
7560151b 4373 unsigned long flags;
2d70c103 4374
a6ca8878
AP		 4375 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4376
4377 port_id.b.domain = iocb->u.isp24.port_id[2];
4378 port_id.b.area = iocb->u.isp24.port_id[1];
4379 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4380 port_id.b.rsvd_1 = 0;
4381
4382 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4383
2d70c103 4384 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
7b833558
OK		 4385 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
4386 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
2d70c103 4387
a6ca8878
AP		 4388 /* res = 1 means ack at the end of thread
4389 * res = 0 means ack async/later.
4390 */
2d70c103
NB		 4391 switch (iocb->u.isp24.status_subcode) {
4392 case ELS_PLOGI:
a6ca8878 4393
daddf5cf
AP		 4394 /* Mark all stale commands in qla_tgt_wq for deletion */
4395 abort_cmds_for_s_id(vha, &port_id);
4396
7560151b
QT		 4397 if (wwn) {
4398 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
a6ca8878 4399 sess = qlt_find_sess_invalidate_other(tgt, wwn,
b7bd104e 4400 port_id, loop_id, &conflict_sess);
7560151b
QT		 4401 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4402 }
a6ca8878 4403
b7bd104e 4404 if (IS_SW_RESV_ADDR(port_id) || (!sess && !conflict_sess)) {
a6ca8878
AP		 4405 res = 1;
4406 break;
4407 }
4408
b7bd104e
AP		 4409 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4410 if (!pla) {
a6ca8878
AP		 4411 qlt_send_term_imm_notif(vha, iocb, 1);
4412
4413 res = 0;
4414 break;
4415 }
4416
4417 res = 0;
4418
b7bd104e
AP		 4419 if (conflict_sess)
4420 qlt_plogi_ack_link(vha, pla, conflict_sess,
4421 QLT_PLOGI_LINK_CONFLICT);
a6ca8878 4422
b7bd104e
AP		 4423 if (!sess)
4424 break;
4425
4426 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
a6ca8878
AP		 4427 /*
4428 * Under normal circumstances we want to release nport handle
4429 * during LOGO process to avoid nport handle leaks inside FW.
4430 * The exception is when LOGO is done while another PLOGI with
4431 * the same nport handle is waiting as might be the case here.
4432 * Note: there is always a possibily of a race where session
4433 * deletion has already started for other reasons (e.g. ACL
4434 * removal) and now PLOGI arrives:
4435 * 1. if PLOGI arrived in FW after nport handle has been freed,
4436 * FW must have assigned this PLOGI a new/same handle and we
4437 * can proceed ACK'ing it as usual when session deletion
4438 * completes.
4439 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4440 * bit reached it, the handle has now been released. We'll
4441 * get an error when we ACK this PLOGI. Nothing will be sent
4442 * back to initiator. Initiator should eventually retry
4443 * PLOGI and situation will correct itself.
4444 */
4445 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4446 (sess->s_id.b24 == port_id.b24));
4447 qlt_schedule_sess_for_deletion(sess, true);
4448 break;
4449
2d70c103 4450 case ELS_PRLI:
a6ca8878
AP		 4451 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4452
7560151b
QT		 4453 if (wwn) {
4454 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
a6ca8878 4455 sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id,
b7bd104e 4456 loop_id, &conflict_sess);
7560151b
QT		 4457 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4458 }
b7bd104e
AP		 4459
4460 if (conflict_sess) {
4461 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4462 "PRLI with conflicting sess %p port %8phC\n",
4463 conflict_sess, conflict_sess->port_name);
4464 qlt_send_term_imm_notif(vha, iocb, 1);
4465 res = 0;
4466 break;
4467 }
a6ca8878
AP		 4468
4469 if (sess != NULL) {
4470 if (sess->deleted) {
4471 /*
4472 * Impatient initiator sent PRLI before last
4473 * PLOGI could finish. Will force him to re-try,
4474 * while last one finishes.
4475 */
df673274 4476 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4477 "sess %p PRLI received, before plogi ack.\n",
4478 sess);
4479 qlt_send_term_imm_notif(vha, iocb, 1);
4480 res = 0;
4481 break;
4482 }
4483
4484 /*
4485 * This shouldn't happen under normal circumstances,
4486 * since we have deleted the old session during PLOGI
4487 */
df673274 4488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4489 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4490 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4491
4492 sess->local = 0;
4493 sess->loop_id = loop_id;
4494 sess->s_id = port_id;
4495
4496 if (wd3_lo & BIT_7)
4497 sess->conf_compl_supported = 1;
4498
df673274
AP		 4499 }
4500 res = 1; /* send notify ack */
4501
4502 /* Make session global (not used in fabric mode) */
4503 if (ha->current_topology != ISP_CFG_F) {
4504 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4505 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4506 qla2xxx_wake_dpc(vha);
a6ca8878
AP		 4507 } else {
4508 /* todo: else - create sess here. */
4509 res = 1; /* send notify ack */
4510 }
4511
4512 break;
4513
2d70c103
NB		 4514 case ELS_LOGO:
4515 case ELS_PRLO:
4516 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4517 break;
4518 case ELS_PDISC:
4519 case ELS_ADISC:
4520 {
0e8cd71c 4521 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4522 if (tgt->link_reinit_iocb_pending) {
4523 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4524 0, 0, 0, 0, 0, 0);
4525 tgt->link_reinit_iocb_pending = 0;
4526 }
4527 res = 1; /* send notify ack */
4528 break;
4529 }
4530
a6ca8878 4531 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4532 default:
4533 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4534 "qla_target(%d): Unsupported ELS command %x "
4535 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4536 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4537 break;
4538 }
4539
4540 return res;
4541}
4542
4543static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
4544{
5897cb2f
BVA		 4545#if 1
4546 /*
4547 * FIXME: Reject non zero SRR relative offset until we can test
4548 * this code properly.
4549 */
4550 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
4551 return -1;
4552#else
2d70c103
NB		 4553 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
4554 size_t first_offset = 0, rem_offset = offset, tmp = 0;
4555 int i, sg_srr_cnt, bufflen = 0;
4556
4557 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
4558 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
4559 "cmd->sg_cnt: %u, direction: %d\n",
4560 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
4561
2d70c103
NB		 4562 if (!cmd->sg || !cmd->sg_cnt) {
4563 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
4564 "Missing cmd->sg or zero cmd->sg_cnt in"
4565 " qla_tgt_set_data_offset\n");
4566 return -EINVAL;
4567 }
4568 /*
4569 * Walk the current cmd->sg list until we locate the new sg_srr_start
4570 */
4571 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
4572 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
4573 "sg[%d]: %p page: %p, length: %d, offset: %d\n",
4574 i, sg, sg_page(sg), sg->length, sg->offset);
4575
4576 if ((sg->length + tmp) > offset) {
4577 first_offset = rem_offset;
4578 sg_srr_start = sg;
4579 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
4580 "Found matching sg[%d], using %p as sg_srr_start, "
4581 "and using first_offset: %zu\n", i, sg,
4582 first_offset);
4583 break;
4584 }
4585 tmp += sg->length;
4586 rem_offset -= sg->length;
4587 }
4588
4589 if (!sg_srr_start) {
4590 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
4591 "Unable to locate sg_srr_start for offset: %u\n", offset);
4592 return -EINVAL;
4593 }
4594 sg_srr_cnt = (cmd->sg_cnt - i);
4595
4596 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
4597 if (!sg_srr) {
4598 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
4599 "Unable to allocate sgp\n");
4600 return -ENOMEM;
4601 }
4602 sg_init_table(sg_srr, sg_srr_cnt);
4603 sgp = &sg_srr[0];
4604 /*
4605 * Walk the remaining list for sg_srr_start, mapping to the newly
4606 * allocated sg_srr taking first_offset into account.
4607 */
4608 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
4609 if (first_offset) {
4610 sg_set_page(sgp, sg_page(sg),
4611 (sg->length - first_offset), first_offset);
4612 first_offset = 0;
4613 } else {
4614 sg_set_page(sgp, sg_page(sg), sg->length, 0);
4615 }
4616 bufflen += sgp->length;
4617
4618 sgp = sg_next(sgp);
4619 if (!sgp)
4620 break;
4621 }
4622
4623 cmd->sg = sg_srr;
4624 cmd->sg_cnt = sg_srr_cnt;
4625 cmd->bufflen = bufflen;
4626 cmd->offset += offset;
4627 cmd->free_sg = 1;
4628
4629 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
4630 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
4631 cmd->sg_cnt);
4632 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
4633 cmd->bufflen);
4634 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
4635 cmd->offset);
4636
4637 if (cmd->sg_cnt < 0)
4638 BUG();
4639
4640 if (cmd->bufflen < 0)
4641 BUG();
4642
4643 return 0;
5897cb2f 4644#endif
2d70c103
NB		 4645}
4646
4647static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
4648 uint32_t srr_rel_offs, int *xmit_type)
4649{
4650 int res = 0, rel_offs;
4651
4652 rel_offs = srr_rel_offs - cmd->offset;
4653 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
4654 srr_rel_offs, rel_offs);
4655
4656 *xmit_type = QLA_TGT_XMIT_ALL;
4657
4658 if (rel_offs < 0) {
4659 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
4660 "qla_target(%d): SRR rel_offs (%d) < 0",
4661 cmd->vha->vp_idx, rel_offs);
4662 res = -1;
4663 } else if (rel_offs == cmd->bufflen)
4664 *xmit_type = QLA_TGT_XMIT_STATUS;
4665 else if (rel_offs > 0)
4666 res = qlt_set_data_offset(cmd, rel_offs);
4667
4668 return res;
4669}
4670
4671/* No locks, thread context */
4672static void qlt_handle_srr(struct scsi_qla_host *vha,
4673 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
4674{
4675 struct imm_ntfy_from_isp *ntfy =
4676 (struct imm_ntfy_from_isp *)&imm->imm_ntfy;
4677 struct qla_hw_data *ha = vha->hw;
4678 struct qla_tgt_cmd *cmd = sctio->cmd;
4679 struct se_cmd *se_cmd = &cmd->se_cmd;
4680 unsigned long flags;
4681 int xmit_type = 0, resp = 0;
4682 uint32_t offset;
4683 uint16_t srr_ui;
4684
4685 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
4686 srr_ui = ntfy->u.isp24.srr_ui;
4687
4688 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
4689 cmd, srr_ui);
4690
4691 switch (srr_ui) {
4692 case SRR_IU_STATUS:
4693 spin_lock_irqsave(&ha->hardware_lock, flags);
4694 qlt_send_notify_ack(vha, ntfy,
4695 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4696 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4697 xmit_type = QLA_TGT_XMIT_STATUS;
4698 resp = 1;
4699 break;
4700 case SRR_IU_DATA_IN:
4701 if (!cmd->sg || !cmd->sg_cnt) {
4702 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
4703 "Unable to process SRR_IU_DATA_IN due to"
4704 " missing cmd->sg, state: %d\n", cmd->state);
4705 dump_stack();
4706 goto out_reject;
4707 }
4708 if (se_cmd->scsi_status != 0) {
4709 ql_dbg(ql_dbg_tgt, vha, 0xe02a,
4710 "Rejecting SRR_IU_DATA_IN with non GOOD "
4711 "scsi_status\n");
4712 goto out_reject;
4713 }
4714 cmd->bufflen = se_cmd->data_length;
4715
4716 if (qlt_has_data(cmd)) {
4717 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4718 goto out_reject;
4719 spin_lock_irqsave(&ha->hardware_lock, flags);
4720 qlt_send_notify_ack(vha, ntfy,
4721 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4722 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4723 resp = 1;
4724 } else {
4725 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
649ee054
BVA		 4726 "qla_target(%d): SRR for in data for cmd without them (tag %lld, SCSI status %d), reject",
4727 vha->vp_idx, se_cmd->tag,
2d70c103
NB		 4728 cmd->se_cmd.scsi_status);
4729 goto out_reject;
4730 }
4731 break;
4732 case SRR_IU_DATA_OUT:
4733 if (!cmd->sg || !cmd->sg_cnt) {
4734 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
4735 "Unable to process SRR_IU_DATA_OUT due to"
4736 " missing cmd->sg\n");
4737 dump_stack();
4738 goto out_reject;
4739 }
4740 if (se_cmd->scsi_status != 0) {
4741 ql_dbg(ql_dbg_tgt, vha, 0xe02b,
4742 "Rejecting SRR_IU_DATA_OUT"
4743 " with non GOOD scsi_status\n");
4744 goto out_reject;
4745 }
4746 cmd->bufflen = se_cmd->data_length;
4747
4748 if (qlt_has_data(cmd)) {
4749 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
4750 goto out_reject;
4751 spin_lock_irqsave(&ha->hardware_lock, flags);
4752 qlt_send_notify_ack(vha, ntfy,
4753 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
4754 spin_unlock_irqrestore(&ha->hardware_lock, flags);
e07f8f65
SK		 4755 if (xmit_type & QLA_TGT_XMIT_DATA) {
4756 cmd->cmd_flags |= BIT_8;
2d70c103 4757 qlt_rdy_to_xfer(cmd);
e07f8f65 4758 }
2d70c103
NB		 4759 } else {
4760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
649ee054
BVA		 4761 "qla_target(%d): SRR for out data for cmd without them (tag %lld, SCSI status %d), reject",
4762 vha->vp_idx, se_cmd->tag, cmd->se_cmd.scsi_status);
2d70c103
NB		 4763 goto out_reject;
4764 }
4765 break;
4766 default:
4767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
4768 "qla_target(%d): Unknown srr_ui value %x",
4769 vha->vp_idx, srr_ui);
4770 goto out_reject;
4771 }
4772
4773 /* Transmit response in case of status and data-in cases */
e07f8f65
SK		 4774 if (resp) {
4775 cmd->cmd_flags |= BIT_7;
2d70c103 4776 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
e07f8f65 4777 }
2d70c103
NB		 4778
4779 return;
4780
4781out_reject:
4782 spin_lock_irqsave(&ha->hardware_lock, flags);
4783 qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
4784 NOTIFY_ACK_SRR_FLAGS_REJECT,
4785 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4786 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4787 if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
4788 cmd->state = QLA_TGT_STATE_DATA_IN;
4789 dump_stack();
e07f8f65
SK		 4790 } else {
4791 cmd->cmd_flags |= BIT_9;
a07100e0 4792 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
e07f8f65 4793 }
2d70c103
NB		 4794 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4795}
4796
4797static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
4798 struct qla_tgt_srr_imm *imm, int ha_locked)
4799{
4800 struct qla_hw_data *ha = vha->hw;
4801 unsigned long flags = 0;
4802
8d16366b 4803#ifndef __CHECKER__
2d70c103
NB		 4804 if (!ha_locked)
4805 spin_lock_irqsave(&ha->hardware_lock, flags);
8d16366b 4806#endif
2d70c103
NB		 4807
4808 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
4809 NOTIFY_ACK_SRR_FLAGS_REJECT,
4810 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4811 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4812
8d16366b 4813#ifndef __CHECKER__
2d70c103
NB		 4814 if (!ha_locked)
4815 spin_unlock_irqrestore(&ha->hardware_lock, flags);
8d16366b 4816#endif
2d70c103
NB		 4817
4818 kfree(imm);
4819}
4820
4821static void qlt_handle_srr_work(struct work_struct *work)
4822{
4823 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
4824 struct scsi_qla_host *vha = tgt->vha;
4825 struct qla_tgt_srr_ctio *sctio;
4826 unsigned long flags;
4827
4828 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
4829 tgt);
4830
4831restart:
4832 spin_lock_irqsave(&tgt->srr_lock, flags);
4833 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
4834 struct qla_tgt_srr_imm *imm, *i, *ti;
4835 struct qla_tgt_cmd *cmd;
4836 struct se_cmd *se_cmd;
4837
4838 imm = NULL;
4839 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
4840 srr_list_entry) {
4841 if (i->srr_id == sctio->srr_id) {
4842 list_del(&i->srr_list_entry);
4843 if (imm) {
4844 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
4845 "qla_target(%d): There must be "
4846 "only one IMM SRR per CTIO SRR "
4847 "(IMM SRR %p, id %d, CTIO %p\n",
4848 vha->vp_idx, i, i->srr_id, sctio);
4849 qlt_reject_free_srr_imm(tgt->vha, i, 0);
4850 } else
4851 imm = i;
4852 }
4853 }
4854
4855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
4856 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
4857 sctio->srr_id);
4858
4859 if (imm == NULL) {
4860 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
4861 "Not found matching IMM for SRR CTIO (id %d)\n",
4862 sctio->srr_id);
4863 continue;
4864 } else
4865 list_del(&sctio->srr_list_entry);
4866
4867 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4868
4869 cmd = sctio->cmd;
4870 /*
4871 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
4872 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
4873 * logic..
4874 */
4875 cmd->offset = 0;
4876 if (cmd->free_sg) {
4877 kfree(cmd->sg);
4878 cmd->sg = NULL;
4879 cmd->free_sg = 0;
4880 }
4881 se_cmd = &cmd->se_cmd;
4882
4883 cmd->sg_cnt = se_cmd->t_data_nents;
4884 cmd->sg = se_cmd->t_data_sg;
4885
4886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
649ee054
BVA		 4887 "SRR cmd %p (se_cmd %p, tag %lld, op %x), sg_cnt=%d, offset=%d",
4888 cmd, &cmd->se_cmd, se_cmd->tag, se_cmd->t_task_cdb ?
4889 se_cmd->t_task_cdb[0] : 0, cmd->sg_cnt, cmd->offset);
2d70c103
NB		 4890
4891 qlt_handle_srr(vha, sctio, imm);
4892
4893 kfree(imm);
4894 kfree(sctio);
4895 goto restart;
4896 }
4897 spin_unlock_irqrestore(&tgt->srr_lock, flags);
4898}
4899
4900/* ha->hardware_lock supposed to be held on entry */
4901static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
4902 struct imm_ntfy_from_isp *iocb)
4903{
4904 struct qla_tgt_srr_imm *imm;
0e8cd71c 4905 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4906 struct qla_tgt_srr_ctio *sctio;
4907
4908 tgt->imm_srr_id++;
4909
e07f8f65 4910 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n",
2d70c103
NB		 4911 vha->vp_idx);
4912
4913 imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
4914 if (imm != NULL) {
4915 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
4916
4917 /* IRQ is already OFF */
4918 spin_lock(&tgt->srr_lock);
4919 imm->srr_id = tgt->imm_srr_id;
4920 list_add_tail(&imm->srr_list_entry,
4921 &tgt->srr_imm_list);
4922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
4923 "IMM NTFY SRR %p added (id %d, ui %x)\n",
4924 imm, imm->srr_id, iocb->u.isp24.srr_ui);
4925 if (tgt->imm_srr_id == tgt->ctio_srr_id) {
4926 int found = 0;
4927 list_for_each_entry(sctio, &tgt->srr_ctio_list,
4928 srr_list_entry) {
4929 if (sctio->srr_id == imm->srr_id) {
4930 found = 1;
4931 break;
4932 }
4933 }
4934 if (found) {
4935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
4936 "Scheduling srr work\n");
4937 schedule_work(&tgt->srr_work);
4938 } else {
4939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
4940 "qla_target(%d): imm_srr_id "
4941 "== ctio_srr_id (%d), but there is no "
4942 "corresponding SRR CTIO, deleting IMM "
4943 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
4944 imm);
4945 list_del(&imm->srr_list_entry);
4946
4947 kfree(imm);
4948
4949 spin_unlock(&tgt->srr_lock);
4950 goto out_reject;
4951 }
4952 }
4953 spin_unlock(&tgt->srr_lock);
4954 } else {
4955 struct qla_tgt_srr_ctio *ts;
4956
4957 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
4958 "qla_target(%d): Unable to allocate SRR IMM "
4959 "entry, SRR request will be rejected\n", vha->vp_idx);
4960
4961 /* IRQ is already OFF */
4962 spin_lock(&tgt->srr_lock);
4963 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
4964 srr_list_entry) {
4965 if (sctio->srr_id == tgt->imm_srr_id) {
4966 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
4967 "CTIO SRR %p deleted (id %d)\n",
4968 sctio, sctio->srr_id);
4969 list_del(&sctio->srr_list_entry);
4970 qlt_send_term_exchange(vha, sctio->cmd,
a07100e0 4971 &sctio->cmd->atio, 1, 0);
2d70c103
NB		 4972 kfree(sctio);
4973 }
4974 }
4975 spin_unlock(&tgt->srr_lock);
4976 goto out_reject;
4977 }
4978
4979 return;
4980
4981out_reject:
4982 qlt_send_notify_ack(vha, iocb, 0, 0, 0,
4983 NOTIFY_ACK_SRR_FLAGS_REJECT,
4984 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
4985 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
4986}
4987
4988/*
4989 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4990 */
4991static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4992 struct imm_ntfy_from_isp *iocb)
4993{
4994 struct qla_hw_data *ha = vha->hw;
4995 uint32_t add_flags = 0;
4996 int send_notify_ack = 1;
4997 uint16_t status;
4998
4999 status = le16_to_cpu(iocb->u.isp2x.status);
5000 switch (status) {
5001 case IMM_NTFY_LIP_RESET:
5002 {
5003 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5004 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5005 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5006 iocb->u.isp24.status_subcode);
5007
5008 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5009 send_notify_ack = 0;
5010 break;
5011 }
5012
5013 case IMM_NTFY_LIP_LINK_REINIT:
5014 {
0e8cd71c 5015 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5016 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5017 "qla_target(%d): LINK REINIT (loop %#x, "
5018 "subcode %x)\n", vha->vp_idx,
5019 le16_to_cpu(iocb->u.isp24.nport_handle),
5020 iocb->u.isp24.status_subcode);
5021 if (tgt->link_reinit_iocb_pending) {
5022 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
5023 0, 0, 0, 0, 0, 0);
5024 }
5025 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5026 tgt->link_reinit_iocb_pending = 1;
5027 /*
5028 * QLogic requires to wait after LINK REINIT for possible
5029 * PDISC or ADISC ELS commands
5030 */
5031 send_notify_ack = 0;
5032 break;
5033 }
5034
5035 case IMM_NTFY_PORT_LOGOUT:
5036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5037 "qla_target(%d): Port logout (loop "
5038 "%#x, subcode %x)\n", vha->vp_idx,
5039 le16_to_cpu(iocb->u.isp24.nport_handle),
5040 iocb->u.isp24.status_subcode);
5041
5042 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5043 send_notify_ack = 0;
5044 /* The sessions will be cleared in the callback, if needed */
5045 break;
5046
5047 case IMM_NTFY_GLBL_TPRLO:
5048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5049 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5050 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5051 send_notify_ack = 0;
5052 /* The sessions will be cleared in the callback, if needed */
5053 break;
5054
5055 case IMM_NTFY_PORT_CONFIG:
5056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5057 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5058 status);
5059 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5060 send_notify_ack = 0;
5061 /* The sessions will be cleared in the callback, if needed */
5062 break;
5063
5064 case IMM_NTFY_GLBL_LOGO:
5065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5066 "qla_target(%d): Link failure detected\n",
5067 vha->vp_idx);
5068 /* I_T nexus loss */
5069 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5070 send_notify_ack = 0;
5071 break;
5072
5073 case IMM_NTFY_IOCB_OVERFLOW:
5074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5075 "qla_target(%d): Cannot provide requested "
5076 "capability (IOCB overflowed the immediate notify "
5077 "resource count)\n", vha->vp_idx);
5078 break;
5079
5080 case IMM_NTFY_ABORT_TASK:
5081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5082 "qla_target(%d): Abort Task (S %08x I %#x -> "
5083 "L %#x)\n", vha->vp_idx,
5084 le16_to_cpu(iocb->u.isp2x.seq_id),
5085 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5086 le16_to_cpu(iocb->u.isp2x.lun));
5087 if (qlt_abort_task(vha, iocb) == 0)
5088 send_notify_ack = 0;
5089 break;
5090
5091 case IMM_NTFY_RESOURCE:
5092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5093 "qla_target(%d): Out of resources, host %ld\n",
5094 vha->vp_idx, vha->host_no);
5095 break;
5096
5097 case IMM_NTFY_MSG_RX:
5098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5099 "qla_target(%d): Immediate notify task %x\n",
5100 vha->vp_idx, iocb->u.isp2x.task_flags);
5101 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5102 send_notify_ack = 0;
5103 break;
5104
5105 case IMM_NTFY_ELS:
5106 if (qlt_24xx_handle_els(vha, iocb) == 0)
5107 send_notify_ack = 0;
5108 break;
5109
5110 case IMM_NTFY_SRR:
5111 qlt_prepare_srr_imm(vha, iocb);
5112 send_notify_ack = 0;
5113 break;
5114
5115 default:
5116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5117 "qla_target(%d): Received unknown immediate "
5118 "notify status %x\n", vha->vp_idx, status);
5119 break;
5120 }
5121
5122 if (send_notify_ack)
5123 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
5124}
5125
5126/*
5127 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5128 * This function sends busy to ISP 2xxx or 24xx.
5129 */
33e79977 5130static int __qlt_send_busy(struct scsi_qla_host *vha,
2d70c103
NB		 5131 struct atio_from_isp *atio, uint16_t status)
5132{
5133 struct ctio7_to_24xx *ctio24;
5134 struct qla_hw_data *ha = vha->hw;
5135 request_t *pkt;
5136 struct qla_tgt_sess *sess = NULL;
7560151b 5137 unsigned long flags;
2d70c103 5138
7560151b 5139 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5140 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5141 atio->u.isp24.fcp_hdr.s_id);
7560151b 5142 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5143 if (!sess) {
a07100e0 5144 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
33e79977 5145 return 0;
2d70c103
NB		 5146 }
5147 /* Sending marker isn't necessary, since we called from ISR */
5148
5149 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
5150 if (!pkt) {
667024a3 5151 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5152 "qla_target(%d): %s failed: unable to allocate "
5153 "request packet", vha->vp_idx, __func__);
33e79977 5154 return -ENOMEM;
2d70c103
NB		 5155 }
5156
ce1025cd 5157 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5158 pkt->entry_count = 1;
5159 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5160
5161 ctio24 = (struct ctio7_to_24xx *)pkt;
5162 ctio24->entry_type = CTIO_TYPE7;
5163 ctio24->nport_handle = sess->loop_id;
ad950360 5164 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5165 ctio24->vp_index = vha->vp_idx;
5166 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5167 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5168 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5169 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
5170 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
ad950360 5171 cpu_to_le16(
2d70c103
NB		 5172 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
5173 CTIO7_FLAGS_DONT_RET_CTIO);
5174 /*
5175 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5176 * if the explicit conformation is used.
5177 */
5178 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5179 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5180 /* Memory Barrier */
5181 wmb();
2d70c103 5182 qla2x00_start_iocbs(vha, vha->req);
33e79977
QT		 5183 return 0;
5184}
5185
5186/*
5187 * This routine is used to allocate a command for either a QFull condition
5188 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5189 * out previously.
5190 */
5191static void
5192qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5193 struct atio_from_isp *atio, uint16_t status, int qfull)
5194{
5195 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5196 struct qla_hw_data *ha = vha->hw;
5197 struct qla_tgt_sess *sess;
5198 struct se_session *se_sess;
5199 struct qla_tgt_cmd *cmd;
5200 int tag;
5201
5202 if (unlikely(tgt->tgt_stop)) {
5203 ql_dbg(ql_dbg_io, vha, 0x300a,
5204 "New command while device %p is shutting down\n", tgt);
5205 return;
5206 }
5207
5208 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5209 vha->hw->tgt.num_qfull_cmds_dropped++;
5210 if (vha->hw->tgt.num_qfull_cmds_dropped >
5211 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5212 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5213 vha->hw->tgt.num_qfull_cmds_dropped;
5214
5215 ql_dbg(ql_dbg_io, vha, 0x3068,
5216 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5217 vha->vp_idx, __func__,
5218 vha->hw->tgt.num_qfull_cmds_dropped);
5219
5220 qlt_chk_exch_leak_thresh_hold(vha);
5221 return;
5222 }
5223
5224 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5225 (vha, atio->u.isp24.fcp_hdr.s_id);
5226 if (!sess)
5227 return;
5228
5229 se_sess = sess->se_sess;
5230
5231 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5232 if (tag < 0)
5233 return;
5234
5235 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5236 if (!cmd) {
5237 ql_dbg(ql_dbg_io, vha, 0x3009,
5238 "qla_target(%d): %s: Allocation of cmd failed\n",
5239 vha->vp_idx, __func__);
5240
5241 vha->hw->tgt.num_qfull_cmds_dropped++;
5242 if (vha->hw->tgt.num_qfull_cmds_dropped >
5243 vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
5244 vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
5245 vha->hw->tgt.num_qfull_cmds_dropped;
5246
5247 qlt_chk_exch_leak_thresh_hold(vha);
5248 return;
5249 }
5250
5251 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5252
5253 qlt_incr_num_pend_cmds(vha);
5254 INIT_LIST_HEAD(&cmd->cmd_list);
5255 memcpy(&cmd->atio, atio, sizeof(*atio));
5256
5257 cmd->tgt = vha->vha_tgt.qla_tgt;
5258 cmd->vha = vha;
5259 cmd->reset_count = vha->hw->chip_reset;
5260 cmd->q_full = 1;
5261
5262 if (qfull) {
5263 cmd->q_full = 1;
5264 /* NOTE: borrowing the state field to carry the status */
5265 cmd->state = status;
5266 } else
5267 cmd->term_exchg = 1;
5268
5269 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5270
5271 vha->hw->tgt.num_qfull_cmds_alloc++;
5272 if (vha->hw->tgt.num_qfull_cmds_alloc >
5273 vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
5274 vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
5275 vha->hw->tgt.num_qfull_cmds_alloc;
5276}
5277
5278int
5279qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5280{
5281 struct qla_hw_data *ha = vha->hw;
5282 unsigned long flags;
5283 struct qla_tgt_cmd *cmd, *tcmd;
5284 struct list_head free_list;
5285 int rc = 0;
5286
5287 if (list_empty(&ha->tgt.q_full_list))
5288 return 0;
5289
5290 INIT_LIST_HEAD(&free_list);
5291
5292 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5293
5294 if (list_empty(&ha->tgt.q_full_list)) {
5295 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5296 return 0;
5297 }
5298
5299 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5300 if (cmd->q_full)
5301 /* cmd->state is a borrowed field to hold status */
5302 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5303 else if (cmd->term_exchg)
5304 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5305
5306 if (rc == -ENOMEM)
5307 break;
5308
5309 if (cmd->q_full)
5310 ql_dbg(ql_dbg_io, vha, 0x3006,
5311 "%s: busy sent for ox_id[%04x]\n", __func__,
5312 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5313 else if (cmd->term_exchg)
5314 ql_dbg(ql_dbg_io, vha, 0x3007,
5315 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5316 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5317 else
5318 ql_dbg(ql_dbg_io, vha, 0x3008,
5319 "%s: Unexpected cmd in QFull list %p\n", __func__,
5320 cmd);
5321
5322 list_del(&cmd->cmd_list);
5323 list_add_tail(&cmd->cmd_list, &free_list);
5324
5325 /* piggy back on hardware_lock for protection */
5326 vha->hw->tgt.num_qfull_cmds_alloc--;
5327 }
5328 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5329
5330 cmd = NULL;
5331
5332 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5333 list_del(&cmd->cmd_list);
5334 /* This cmd was never sent to TCM. There is no need
5335 * to schedule free or call free_cmd
5336 */
5337 qlt_free_cmd(cmd);
5338 }
5339 return rc;
5340}
5341
5342static void
5343qlt_send_busy(struct scsi_qla_host *vha,
5344 struct atio_from_isp *atio, uint16_t status)
5345{
5346 int rc = 0;
5347
5348 rc = __qlt_send_busy(vha, atio, status);
5349 if (rc == -ENOMEM)
5350 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5351}
5352
5353static int
5354qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
5355 struct atio_from_isp *atio)
5356{
5357 struct qla_hw_data *ha = vha->hw;
5358 uint16_t status;
5359
5360 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5361 return 0;
5362
5363 status = temp_sam_status;
5364 qlt_send_busy(vha, atio, status);
5365 return 1;
2d70c103
NB		 5366}
5367
5368/* ha->hardware_lock supposed to be held on entry */
5369/* called via callback from qla2xxx */
5370static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5371 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5372{
5373 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5374 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5375 int rc;
2f424b9b 5376 unsigned long flags;
2d70c103
NB		 5377
5378 if (unlikely(tgt == NULL)) {
667024a3 5379 ql_dbg(ql_dbg_io, vha, 0x3064,
2d70c103
NB		 5380 "ATIO pkt, but no tgt (ha %p)", ha);
5381 return;
5382 }
2d70c103
NB		 5383 /*
5384 * In tgt_stop mode we also should allow all requests to pass.
5385 * Otherwise, some commands can stuck.
5386 */
5387
2f424b9b 5388 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5389
5390 switch (atio->u.raw.entry_type) {
5391 case ATIO_TYPE7:
2d70c103
NB		 5392 if (unlikely(atio->u.isp24.exchange_addr ==
5393 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5394 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5395 "qla_target(%d): ATIO_TYPE7 "
5396 "received with UNKNOWN exchange address, "
5397 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5398 if (!ha_locked)
5399 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5400 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
2f424b9b
QT		 5401 if (!ha_locked)
5402 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5403 break;
5404 }
33e79977
QT		 5405
5406
5407
5408 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
5409 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5410 if (rc != 0) {
2f424b9b 5411 tgt->atio_irq_cmd_count--;
33e79977
QT		 5412 return;
5413 }
2d70c103 5414 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5415 } else {
2d70c103 5416 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5417 }
2d70c103
NB		 5418 if (unlikely(rc != 0)) {
5419 if (rc == -ESRCH) {
2f424b9b
QT		 5420 if (!ha_locked)
5421 spin_lock_irqsave
5422 (&ha->hardware_lock, flags);
5423
2d70c103
NB		 5424#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5425 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5426#else
a07100e0 5427 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103 5428#endif
2f424b9b
QT		 5429
5430 if (!ha_locked)
5431 spin_unlock_irqrestore
5432 (&ha->hardware_lock, flags);
5433
2d70c103
NB		 5434 } else {
5435 if (tgt->tgt_stop) {
5436 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5437 "qla_target: Unable to send "
5438 "command to target for req, "
5439 "ignoring.\n");
5440 } else {
5441 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5442 "qla_target(%d): Unable to send "
5443 "command to target, sending BUSY "
5444 "status.\n", vha->vp_idx);
2f424b9b
QT		 5445 if (!ha_locked)
5446 spin_lock_irqsave(
5447 &ha->hardware_lock, flags);
2d70c103 5448 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
2f424b9b
QT		 5449 if (!ha_locked)
5450 spin_unlock_irqrestore(
5451 &ha->hardware_lock, flags);
2d70c103
NB		 5452 }
5453 }
5454 }
5455 break;
5456
5457 case IMMED_NOTIFY_TYPE:
5458 {
5459 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5460 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5461 "qla_target(%d): Received ATIO packet %x "
5462 "with error status %x\n", vha->vp_idx,
5463 atio->u.raw.entry_type,
5464 atio->u.isp2x.entry_status);
5465 break;
5466 }
5467 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5468
5469 if (!ha_locked)
5470 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5471 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5472 if (!ha_locked)
5473 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5474 break;
5475 }
5476
5477 default:
5478 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5479 "qla_target(%d): Received unknown ATIO atio "
5480 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5481 break;
5482 }
5483
2f424b9b 5484 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5485}
5486
5487/* ha->hardware_lock supposed to be held on entry */
5488/* called via callback from qla2xxx */
5489static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5490{
5491 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5492 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5493
5494 if (unlikely(tgt == NULL)) {
5495 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5496 "qla_target(%d): Response pkt %x received, but no "
5497 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5498 return;
5499 }
5500
2d70c103
NB		 5501 /*
5502 * In tgt_stop mode we also should allow all requests to pass.
5503 * Otherwise, some commands can stuck.
5504 */
5505
5506 tgt->irq_cmd_count++;
5507
5508 switch (pkt->entry_type) {
f83adb61 5509 case CTIO_CRC2:
2d70c103
NB		 5510 case CTIO_TYPE7:
5511 {
5512 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 5513 qlt_do_ctio_completion(vha, entry->handle,
5514 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5515 entry);
5516 break;
5517 }
5518
5519 case ACCEPT_TGT_IO_TYPE:
5520 {
5521 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5522 int rc;
2d70c103 5523 if (atio->u.isp2x.status !=
ad950360 5524 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5525 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5526 "qla_target(%d): ATIO with error "
5527 "status %x received\n", vha->vp_idx,
5528 le16_to_cpu(atio->u.isp2x.status));
5529 break;
5530 }
2d70c103 5531
33e79977
QT		 5532 rc = qlt_chk_qfull_thresh_hold(vha, atio);
5533 if (rc != 0) {
5534 tgt->irq_cmd_count--;
5535 return;
5536 }
5537
2d70c103
NB		 5538 rc = qlt_handle_cmd_for_atio(vha, atio);
5539 if (unlikely(rc != 0)) {
5540 if (rc == -ESRCH) {
5541#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5542 qlt_send_busy(vha, atio, 0);
5543#else
a07100e0 5544 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103
NB		 5545#endif
5546 } else {
5547 if (tgt->tgt_stop) {
5548 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5549 "qla_target: Unable to send "
5550 "command to target, sending TERM "
5551 "EXCHANGE for rsp\n");
5552 qlt_send_term_exchange(vha, NULL,
a07100e0 5553 atio, 1, 0);
2d70c103
NB		 5554 } else {
5555 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5556 "qla_target(%d): Unable to send "
5557 "command to target, sending BUSY "
5558 "status\n", vha->vp_idx);
5559 qlt_send_busy(vha, atio, 0);
5560 }
5561 }
5562 }
5563 }
5564 break;
5565
5566 case CONTINUE_TGT_IO_TYPE:
5567 {
5568 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5569 qlt_do_ctio_completion(vha, entry->handle,
5570 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5571 entry);
5572 break;
5573 }
5574
5575 case CTIO_A64_TYPE:
5576 {
5577 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5578 qlt_do_ctio_completion(vha, entry->handle,
5579 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5580 entry);
5581 break;
5582 }
5583
5584 case IMMED_NOTIFY_TYPE:
5585 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5586 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5587 break;
5588
5589 case NOTIFY_ACK_TYPE:
5590 if (tgt->notify_ack_expected > 0) {
5591 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5592 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5593 "NOTIFY_ACK seq %08x status %x\n",
5594 le16_to_cpu(entry->u.isp2x.seq_id),
5595 le16_to_cpu(entry->u.isp2x.status));
5596 tgt->notify_ack_expected--;
5597 if (entry->u.isp2x.status !=
ad950360 5598 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5599 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5600 "qla_target(%d): NOTIFY_ACK "
5601 "failed %x\n", vha->vp_idx,
5602 le16_to_cpu(entry->u.isp2x.status));
5603 }
5604 } else {
5605 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5606 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5607 vha->vp_idx);
5608 }
5609 break;
5610
5611 case ABTS_RECV_24XX:
5612 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5613 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5614 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5615 break;
5616
5617 case ABTS_RESP_24XX:
5618 if (tgt->abts_resp_expected > 0) {
5619 struct abts_resp_from_24xx_fw *entry =
5620 (struct abts_resp_from_24xx_fw *)pkt;
5621 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5622 "ABTS_RESP_24XX: compl_status %x\n",
5623 entry->compl_status);
5624 tgt->abts_resp_expected--;
5625 if (le16_to_cpu(entry->compl_status) !=
5626 ABTS_RESP_COMPL_SUCCESS) {
5627 if ((entry->error_subcode1 == 0x1E) &&
5628 (entry->error_subcode2 == 0)) {
5629 /*
5630 * We've got a race here: aborted
5631 * exchange not terminated, i.e.
5632 * response for the aborted command was
5633 * sent between the abort request was
5634 * received and processed.
5635 * Unfortunately, the firmware has a
5636 * silly requirement that all aborted
5637 * exchanges must be explicitely
5638 * terminated, otherwise it refuses to
5639 * send responses for the abort
5640 * requests. So, we have to
5641 * (re)terminate the exchange and retry
5642 * the abort response.
5643 */
5644 qlt_24xx_retry_term_exchange(vha,
5645 entry);
5646 } else
5647 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5648 "qla_target(%d): ABTS_RESP_24XX "
5649 "failed %x (subcode %x:%x)",
5650 vha->vp_idx, entry->compl_status,
5651 entry->error_subcode1,
5652 entry->error_subcode2);
5653 }
5654 } else {
5655 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5656 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5657 "received\n", vha->vp_idx);
5658 }
5659 break;
5660
5661 default:
5662 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5663 "qla_target(%d): Received unknown response pkt "
5664 "type %x\n", vha->vp_idx, pkt->entry_type);
5665 break;
5666 }
5667
5668 tgt->irq_cmd_count--;
5669}
5670
5671/*
5672 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5673 */
5674void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5675 uint16_t *mailbox)
5676{
5677 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5678 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5679 int login_code;
2d70c103 5680
2d70c103
NB		 5681 if (!ha->tgt.tgt_ops)
5682 return;
5683
5684 if (unlikely(tgt == NULL)) {
5685 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5686 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5687 return;
5688 }
5689
5690 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5691 IS_QLA2100(ha))
5692 return;
5693 /*
5694 * In tgt_stop mode we also should allow all requests to pass.
5695 * Otherwise, some commands can stuck.
5696 */
5697
5698 tgt->irq_cmd_count++;
5699
5700 switch (code) {
5701 case MBA_RESET: /* Reset */
5702 case MBA_SYSTEM_ERR: /* System Error */
5703 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5704 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5705 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5706 "qla_target(%d): System error async event %#x "
6efb3c0a 5707 "occurred", vha->vp_idx, code);
2d70c103
NB		 5708 break;
5709 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5710 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5711 break;
5712
5713 case MBA_LOOP_UP:
5714 {
5715 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5716 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5717 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5718 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5719 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5720 if (tgt->link_reinit_iocb_pending) {
5721 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5722 0, 0, 0, 0, 0, 0);
5723 tgt->link_reinit_iocb_pending = 0;
5724 }
5725 break;
5726 }
5727
5728 case MBA_LIP_OCCURRED:
5729 case MBA_LOOP_DOWN:
5730 case MBA_LIP_RESET:
5731 case MBA_RSCN_UPDATE:
5732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5733 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5734 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5735 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5736 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5737 break;
5738
5739 case MBA_PORT_UPDATE:
5740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5741 "qla_target(%d): Port update async event %#x "
6efb3c0a 5742 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5743 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5744 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5745 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5746
5747 login_code = le16_to_cpu(mailbox[2]);
5748 if (login_code == 0x4)
2d70c103
NB		 5749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5750 "Async MB 2: Got PLOGI Complete\n");
4f1d0f19 5751 else if (login_code == 0x7)
2d70c103
NB		 5752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5753 "Async MB 2: Port Logged Out\n");
5754 break;
5755
5756 default:
2d70c103
NB		 5757 break;
5758 }
5759
5760 tgt->irq_cmd_count--;
5761}
5762
5763static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5764 uint16_t loop_id)
5765{
5766 fc_port_t *fcport;
5767 int rc;
5768
5769 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5770 if (!fcport) {
5771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5772 "qla_target(%d): Allocation of tmp FC port failed",
5773 vha->vp_idx);
5774 return NULL;
5775 }
5776
2d70c103
NB		 5777 fcport->loop_id = loop_id;
5778
5779 rc = qla2x00_get_port_database(vha, fcport, 0);
5780 if (rc != QLA_SUCCESS) {
5781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5782 "qla_target(%d): Failed to retrieve fcport "
5783 "information -- get_port_database() returned %x "
5784 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5785 kfree(fcport);
5786 return NULL;
5787 }
5788
5789 return fcport;
5790}
5791
5792/* Must be called under tgt_mutex */
5793static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
5794 uint8_t *s_id)
5795{
2d70c103
NB		 5796 struct qla_tgt_sess *sess = NULL;
5797 fc_port_t *fcport = NULL;
5798 int rc, global_resets;
5799 uint16_t loop_id = 0;
5800
71cdc079
AP		 5801 mutex_lock(&vha->vha_tgt.tgt_mutex);
5802
2d70c103 5803retry:
0e8cd71c
SK		 5804 global_resets =
5805 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5806
5807 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5808 if (rc != 0) {
71cdc079
AP		 5809 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5810
2d70c103
NB		 5811 if ((s_id[0] == 0xFF) &&
5812 (s_id[1] == 0xFC)) {
5813 /*
5814 * This is Domain Controller, so it should be
5815 * OK to drop SCSI commands from it.
5816 */
5817 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5818 "Unable to find initiator with S_ID %x:%x:%x",
5819 s_id[0], s_id[1], s_id[2]);
5820 } else
71cdc079 5821 ql_log(ql_log_info, vha, 0xf071,
2d70c103
NB		 5822 "qla_target(%d): Unable to find "
5823 "initiator with S_ID %x:%x:%x",
5824 vha->vp_idx, s_id[0], s_id[1],
5825 s_id[2]);
71cdc079
AP		 5826
5827 if (rc == -ENOENT) {
5828 qlt_port_logo_t logo;
5829 sid_to_portid(s_id, &logo.id);
5830 logo.cmd_count = 1;
5831 qlt_send_first_logo(vha, &logo);
5832 }
5833
2d70c103
NB		 5834 return NULL;
5835 }
5836
5837 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5838 if (!fcport) {
5839 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5840 return NULL;
71cdc079 5841 }
2d70c103
NB		 5842
5843 if (global_resets !=
0e8cd71c 5844 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5845 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5846 "qla_target(%d): global reset during session discovery "
5847 "(counter was %d, new %d), retrying", vha->vp_idx,
5848 global_resets,
0e8cd71c
SK		 5849 atomic_read(&vha->vha_tgt.
5850 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5851 goto retry;
5852 }
5853
5854 sess = qlt_create_sess(vha, fcport, true);
5855
71cdc079
AP		 5856 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5857
2d70c103
NB		 5858 kfree(fcport);
5859 return sess;
5860}
5861
5862static void qlt_abort_work(struct qla_tgt *tgt,
5863 struct qla_tgt_sess_work_param *prm)
5864{
5865 struct scsi_qla_host *vha = tgt->vha;
5866 struct qla_hw_data *ha = vha->hw;
5867 struct qla_tgt_sess *sess = NULL;
7560151b 5868 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5869 uint32_t be_s_id;
5870 uint8_t s_id[3];
5871 int rc;
5872
7560151b 5873 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5874
5875 if (tgt->tgt_stop)
7560151b 5876 goto out_term2;
2d70c103
NB		 5877
5878 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5879 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5880 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5881
5882 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5883 (unsigned char *)&be_s_id);
5884 if (!sess) {
7560151b 5885 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5886
2d70c103
NB		 5887 sess = qlt_make_local_sess(vha, s_id);
5888 /* sess has got an extra creation ref */
2d70c103 5889
7560151b 5890 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5891 if (!sess)
7560151b 5892 goto out_term2;
2d70c103 5893 } else {
e52a8b45
AP		 5894 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5895 sess = NULL;
7560151b 5896 goto out_term2;
e52a8b45
AP		 5897 }
5898
2d70c103
NB		 5899 kref_get(&sess->se_sess->sess_kref);
5900 }
5901
7560151b
QT		 5902 spin_lock_irqsave(&ha->hardware_lock, flags);
5903
2d70c103
NB		 5904 if (tgt->tgt_stop)
5905 goto out_term;
5906
5907 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
5908 if (rc != 0)
5909 goto out_term;
7560151b 5910 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5911
5912 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5913 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5914 return;
5915
7560151b
QT		 5916out_term2:
5917 spin_lock_irqsave(&ha->hardware_lock, flags);
5918
2d70c103
NB		 5919out_term:
5920 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
7560151b
QT		 5921 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5922
2d70c103
NB		 5923 if (sess)
5924 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5925 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5926}
5927
5928static void qlt_tmr_work(struct qla_tgt *tgt,
5929 struct qla_tgt_sess_work_param *prm)
5930{
5931 struct atio_from_isp *a = &prm->tm_iocb2;
5932 struct scsi_qla_host *vha = tgt->vha;
5933 struct qla_hw_data *ha = vha->hw;
5934 struct qla_tgt_sess *sess = NULL;
5935 unsigned long flags;
5936 uint8_t *s_id = NULL; /* to hide compiler warnings */
5937 int rc;
5938 uint32_t lun, unpacked_lun;
52c82823 5939 int fn;
2d70c103
NB		 5940 void *iocb;
5941
7560151b 5942 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5943
5944 if (tgt->tgt_stop)
5945 goto out_term;
5946
5947 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5948 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5949 if (!sess) {
7560151b 5950 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5951
2d70c103
NB		 5952 sess = qlt_make_local_sess(vha, s_id);
5953 /* sess has got an extra creation ref */
2d70c103 5954
7560151b 5955 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5956 if (!sess)
5957 goto out_term;
5958 } else {
e52a8b45
AP		 5959 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
5960 sess = NULL;
5961 goto out_term;
5962 }
5963
2d70c103
NB		 5964 kref_get(&sess->se_sess->sess_kref);
5965 }
5966
5967 iocb = a;
5968 lun = a->u.isp24.fcp_cmnd.lun;
2d70c103
NB		 5969 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
5970 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
5971
5972 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5973 if (rc != 0)
5974 goto out_term;
2d70c103
NB		 5975
5976 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5977 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5978 return;
5979
5980out_term:
a07100e0 5981 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 5982 if (sess)
5983 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5984 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5985}
5986
5987static void qlt_sess_work_fn(struct work_struct *work)
5988{
5989 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5990 struct scsi_qla_host *vha = tgt->vha;
5991 unsigned long flags;
5992
5993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5994
5995 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5996 while (!list_empty(&tgt->sess_works_list)) {
5997 struct qla_tgt_sess_work_param *prm = list_entry(
5998 tgt->sess_works_list.next, typeof(*prm),
5999 sess_works_list_entry);
6000
6001 /*
6002 * This work can be scheduled on several CPUs at time, so we
6003 * must delete the entry to eliminate double processing
6004 */
6005 list_del(&prm->sess_works_list_entry);
6006
6007 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6008
6009 switch (prm->type) {
6010 case QLA_TGT_SESS_WORK_ABORT:
6011 qlt_abort_work(tgt, prm);
6012 break;
6013 case QLA_TGT_SESS_WORK_TM:
6014 qlt_tmr_work(tgt, prm);
6015 break;
6016 default:
6017 BUG_ON(1);
6018 break;
6019 }
6020
6021 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6022
6023 kfree(prm);
6024 }
6025 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6026}
6027
6028/* Must be called under tgt_host_action_mutex */
6029int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6030{
6031 struct qla_tgt *tgt;
6032
6033 if (!QLA_TGT_MODE_ENABLED())
6034 return 0;
6035
33c36c0a
AE		 6036 if (!IS_TGT_MODE_CAPABLE(ha)) {
6037 ql_log(ql_log_warn, base_vha, 0xe070,
6038 "This adapter does not support target mode.\n");
6039 return 0;
6040 }
6041
2d70c103 6042 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6043 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6044
0e8cd71c 6045 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6046
6047 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6048 if (!tgt) {
6049 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6050 "Unable to allocate struct qla_tgt\n");
6051 return -ENOMEM;
6052 }
6053
6054 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6055 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6056
6057 tgt->ha = ha;
6058 tgt->vha = base_vha;
6059 init_waitqueue_head(&tgt->waitQ);
6060 INIT_LIST_HEAD(&tgt->sess_list);
6061 INIT_LIST_HEAD(&tgt->del_sess_list);
6062 INIT_DELAYED_WORK(&tgt->sess_del_work,
6063 (void (*)(struct work_struct *))qlt_del_sess_work_fn);
6064 spin_lock_init(&tgt->sess_work_lock);
6065 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6066 INIT_LIST_HEAD(&tgt->sess_works_list);
6067 spin_lock_init(&tgt->srr_lock);
6068 INIT_LIST_HEAD(&tgt->srr_ctio_list);
6069 INIT_LIST_HEAD(&tgt->srr_imm_list);
6070 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
6071 atomic_set(&tgt->tgt_global_resets_count, 0);
6072
0e8cd71c 6073 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6074
6075 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6076 "qla_target(%d): using 64 Bit PCI addressing",
6077 base_vha->vp_idx);
6078 tgt->tgt_enable_64bit_addr = 1;
6079 /* 3 is reserved */
6080 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6081 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
6082 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
6083
ddb95145
NB		 6084 if (base_vha->fc_vport)
6085 return 0;
6086
2d70c103
NB		 6087 mutex_lock(&qla_tgt_mutex);
6088 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6089 mutex_unlock(&qla_tgt_mutex);
6090
6091 return 0;
6092}
6093
6094/* Must be called under tgt_host_action_mutex */
6095int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6096{
0e8cd71c 6097 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6098 return 0;
6099
ddb95145
NB		 6100 if (vha->fc_vport) {
6101 qlt_release(vha->vha_tgt.qla_tgt);
6102 return 0;
6103 }
33e79977
QT		 6104
6105 /* free left over qfull cmds */
6106 qlt_init_term_exchange(vha);
6107
2d70c103 6108 mutex_lock(&qla_tgt_mutex);
0e8cd71c 6109 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 6110 mutex_unlock(&qla_tgt_mutex);
6111
6112 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6113 vha->host_no, ha);
0e8cd71c 6114 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6115
6116 return 0;
6117}
6118
6119static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6120 unsigned char *b)
6121{
6122 int i;
6123
6124 pr_debug("qla2xxx HW vha->node_name: ");
6125 for (i = 0; i < WWN_SIZE; i++)
6126 pr_debug("%02x ", vha->node_name[i]);
6127 pr_debug("\n");
6128 pr_debug("qla2xxx HW vha->port_name: ");
6129 for (i = 0; i < WWN_SIZE; i++)
6130 pr_debug("%02x ", vha->port_name[i]);
6131 pr_debug("\n");
6132
6133 pr_debug("qla2xxx passed configfs WWPN: ");
6134 put_unaligned_be64(wwpn, b);
6135 for (i = 0; i < WWN_SIZE; i++)
6136 pr_debug("%02x ", b[i]);
6137 pr_debug("\n");
6138}
6139
6140/**
6141 * qla_tgt_lport_register - register lport with external module
6142 *
6143 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6144 * @wwpn: Passwd FC target WWPN
6145 * @callback: lport initialization callback for tcm_qla2xxx code
6146 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6147 */
49a47f2c
NB		 6148int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6149 u64 npiv_wwpn, u64 npiv_wwnn,
6150 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6151{
6152 struct qla_tgt *tgt;
6153 struct scsi_qla_host *vha;
6154 struct qla_hw_data *ha;
6155 struct Scsi_Host *host;
6156 unsigned long flags;
6157 int rc;
6158 u8 b[WWN_SIZE];
6159
6160 mutex_lock(&qla_tgt_mutex);
6161 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6162 vha = tgt->vha;
6163 ha = vha->hw;
6164
6165 host = vha->host;
6166 if (!host)
6167 continue;
6168
2d70c103
NB		 6169 if (!(host->hostt->supported_mode & MODE_TARGET))
6170 continue;
6171
6172 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6173 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6174 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6175 host->host_no);
6176 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6177 continue;
6178 }
ddb95145
NB		 6179 if (tgt->tgt_stop) {
6180 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6181 host->host_no);
6182 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6183 continue;
6184 }
2d70c103
NB		 6185 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6186
6187 if (!scsi_host_get(host)) {
6188 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6189 "Unable to scsi_host_get() for"
6190 " qla2xxx scsi_host\n");
6191 continue;
6192 }
49a47f2c 6193 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6194
6195 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6196 scsi_host_put(host);
6197 continue;
6198 }
49a47f2c
NB		 6199 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6200 if (rc != 0)
6201 scsi_host_put(host);
6202
ddb95145 6203 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6204 return rc;
6205 }
6206 mutex_unlock(&qla_tgt_mutex);
6207
6208 return -ENODEV;
6209}
6210EXPORT_SYMBOL(qlt_lport_register);
6211
6212/**
6213 * qla_tgt_lport_deregister - Degister lport
6214 *
6215 * @vha: Registered scsi_qla_host pointer
6216 */
6217void qlt_lport_deregister(struct scsi_qla_host *vha)
6218{
6219 struct qla_hw_data *ha = vha->hw;
6220 struct Scsi_Host *sh = vha->host;
6221 /*
6222 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6223 */
0e8cd71c 6224 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6225 ha->tgt.tgt_ops = NULL;
6226 /*
6227 * Release the Scsi_Host reference for the underlying qla2xxx host
6228 */
6229 scsi_host_put(sh);
6230}
6231EXPORT_SYMBOL(qlt_lport_deregister);
6232
6233/* Must be called under HW lock */
55a9066f 6234static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103
NB		 6235{
6236 struct qla_hw_data *ha = vha->hw;
6237
6238 switch (ql2x_ini_mode) {
6239 case QLA2XXX_INI_MODE_DISABLED:
6240 case QLA2XXX_INI_MODE_EXCLUSIVE:
6241 vha->host->active_mode = MODE_TARGET;
6242 break;
6243 case QLA2XXX_INI_MODE_ENABLED:
6244 vha->host->active_mode |= MODE_TARGET;
6245 break;
6246 default:
6247 break;
6248 }
6249
6250 if (ha->tgt.ini_mode_force_reverse)
6251 qla_reverse_ini_mode(vha);
6252}
6253
6254/* Must be called under HW lock */
55a9066f 6255static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103
NB		 6256{
6257 struct qla_hw_data *ha = vha->hw;
6258
6259 switch (ql2x_ini_mode) {
6260 case QLA2XXX_INI_MODE_DISABLED:
6261 vha->host->active_mode = MODE_UNKNOWN;
6262 break;
6263 case QLA2XXX_INI_MODE_EXCLUSIVE:
6264 vha->host->active_mode = MODE_INITIATOR;
6265 break;
6266 case QLA2XXX_INI_MODE_ENABLED:
6267 vha->host->active_mode &= ~MODE_TARGET;
6268 break;
6269 default:
6270 break;
6271 }
6272
6273 if (ha->tgt.ini_mode_force_reverse)
6274 qla_reverse_ini_mode(vha);
6275}
6276
6277/*
6278 * qla_tgt_enable_vha - NO LOCK HELD
6279 *
6280 * host_reset, bring up w/ Target Mode Enabled
6281 */
6282void
6283qlt_enable_vha(struct scsi_qla_host *vha)
6284{
6285 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6286 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6287 unsigned long flags;
0e8cd71c 6288 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
cdb898c5 6289 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
2d70c103
NB		 6290
6291 if (!tgt) {
6292 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6293 "Unable to locate qla_tgt pointer from"
6294 " struct qla_hw_data\n");
6295 dump_stack();
6296 return;
6297 }
6298
6299 spin_lock_irqsave(&ha->hardware_lock, flags);
6300 tgt->tgt_stopped = 0;
6301 qlt_set_mode(vha);
6302 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6303
0e8cd71c
SK		 6304 if (vha->vp_idx) {
6305 qla24xx_disable_vp(vha);
6306 qla24xx_enable_vp(vha);
6307 } else {
cdb898c5
QT		 6308 if (ha->msix_entries) {
6309 ql_dbg(ql_dbg_tgt, vha, 0xffff,
6310 "%s: host%ld : vector %d cpu %d\n",
6311 __func__, vha->host_no,
6312 ha->msix_entries[rspq_ent].vector,
6313 ha->msix_entries[rspq_ent].cpuid);
6314
6315 ha->tgt.rspq_vector_cpuid =
6316 ha->msix_entries[rspq_ent].cpuid;
6317 }
6318
0e8cd71c
SK		 6319 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6320 qla2xxx_wake_dpc(base_vha);
6321 qla2x00_wait_for_hba_online(base_vha);
6322 }
2d70c103
NB		 6323}
6324EXPORT_SYMBOL(qlt_enable_vha);
6325
6326/*
6327 * qla_tgt_disable_vha - NO LOCK HELD
6328 *
6329 * Disable Target Mode and reset the adapter
6330 */
55a9066f 6331static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6332{
6333 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6334 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6335 unsigned long flags;
6336
6337 if (!tgt) {
6338 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6339 "Unable to locate qla_tgt pointer from"
6340 " struct qla_hw_data\n");
6341 dump_stack();
6342 return;
6343 }
6344
6345 spin_lock_irqsave(&ha->hardware_lock, flags);
6346 qlt_clear_mode(vha);
6347 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6348
6349 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6350 qla2xxx_wake_dpc(vha);
6351 qla2x00_wait_for_hba_online(vha);
6352}
6353
6354/*
6355 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6356 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6357 * members.
6358 */
6359void
6360qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6361{
6362 if (!qla_tgt_mode_enabled(vha))
6363 return;
6364
0e8cd71c
SK		 6365 vha->vha_tgt.qla_tgt = NULL;
6366
6367 mutex_init(&vha->vha_tgt.tgt_mutex);
6368 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6369
6370 qlt_clear_mode(vha);
6371
6372 /*
6373 * NOTE: Currently the value is kept the same for <24xx and
6374 * >=24xx ISPs. If it is necessary to change it,
6375 * the check should be added for specific ISPs,
6376 * assigning the value appropriately.
6377 */
6378 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6379
6380 qlt_add_target(ha, vha);
2d70c103
NB		 6381}
6382
6383void
6384qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6385{
6386 /*
6387 * FC-4 Feature bit 0 indicates target functionality to the name server.
6388 */
6389 if (qla_tgt_mode_enabled(vha)) {
6390 if (qla_ini_mode_enabled(vha))
6391 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
6392 else
6393 ct_req->req.rff_id.fc4_feature = BIT_0;
6394 } else if (qla_ini_mode_enabled(vha)) {
6395 ct_req->req.rff_id.fc4_feature = BIT_1;
6396 }
6397}
6398
6399/*
6400 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6401 * @ha: HA context
6402 *
6403 * Beginning of ATIO ring has initialization control block already built
6404 * by nvram config routine.
6405 *
6406 * Returns 0 on success.
6407 */
6408void
6409qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6410{
6411 struct qla_hw_data *ha = vha->hw;
6412 uint16_t cnt;
6413 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6414
6415 if (!qla_tgt_mode_enabled(vha))
6416 return;
6417
6418 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6419 pkt->u.raw.signature = ATIO_PROCESSED;
6420 pkt++;
6421 }
6422
6423}
6424
6425/*
6426 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6427 * @ha: SCSI driver HA context
6428 */
6429void
2f424b9b 6430qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6431{
6432 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6433 struct atio_from_isp *pkt;
6434 int cnt, i;
6435
6436 if (!vha->flags.online)
6437 return;
6438
6439 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
6440 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6441 cnt = pkt->u.raw.entry_count;
6442
2f424b9b
QT		 6443 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt,
6444 ha_locked);
2d70c103
NB		 6445
6446 for (i = 0; i < cnt; i++) {
6447 ha->tgt.atio_ring_index++;
6448 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6449 ha->tgt.atio_ring_index = 0;
6450 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6451 } else
6452 ha->tgt.atio_ring_ptr++;
6453
6454 pkt->u.raw.signature = ATIO_PROCESSED;
6455 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6456 }
6457 wmb();
6458 }
6459
6460 /* Adjust ring index */
aa230bc5 6461 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6462 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6463}
6464
6465void
aa230bc5 6466qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6467{
6468 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6469 if (!QLA_TGT_MODE_ENABLED())
6470 return;
2d70c103 6471
aa230bc5
AE		 6472 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6473 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6474 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6475
6476 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6477 struct qla_msix_entry *msix = &ha->msix_entries[2];
6478 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6479
6480 icb->msix_atio = cpu_to_le16(msix->entry);
6481 ql_dbg(ql_dbg_init, vha, 0xf072,
6482 "Registering ICB vector 0x%x for atio que.\n",
6483 msix->entry);
2d70c103
NB		 6484 }
6485}
6486
6487void
6488qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6489{
6490 struct qla_hw_data *ha = vha->hw;
6491
6492 if (qla_tgt_mode_enabled(vha)) {
6493 if (!ha->tgt.saved_set) {
6494 /* We save only once */
6495 ha->tgt.saved_exchange_count = nv->exchange_count;
6496 ha->tgt.saved_firmware_options_1 =
6497 nv->firmware_options_1;
6498 ha->tgt.saved_firmware_options_2 =
6499 nv->firmware_options_2;
6500 ha->tgt.saved_firmware_options_3 =
6501 nv->firmware_options_3;
6502 ha->tgt.saved_set = 1;
6503 }
6504
ad950360 6505 nv->exchange_count = cpu_to_le16(0xFFFF);
2d70c103
NB		 6506
6507 /* Enable target mode */
ad950360 6508 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6509
6510 /* Disable ini mode, if requested */
6511 if (!qla_ini_mode_enabled(vha))
ad950360 6512 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6513
6514 /* Disable Full Login after LIP */
ad950360 6515 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6516 /* Enable initial LIP */
ad950360 6517 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6518 if (ql2xtgt_tape_enable)
6519 /* Enable FC Tape support */
6520 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6521 else
6522 /* Disable FC Tape support */
6523 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6524
2d70c103 6525 /* Disable Full Login after LIP */
ad950360 6526 nv->host_p &= cpu_to_le32(~BIT_10);
2d70c103 6527 /* Enable target PRLI control */
ad950360 6528 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6529 } else {
6530 if (ha->tgt.saved_set) {
6531 nv->exchange_count = ha->tgt.saved_exchange_count;
6532 nv->firmware_options_1 =
6533 ha->tgt.saved_firmware_options_1;
6534 nv->firmware_options_2 =
6535 ha->tgt.saved_firmware_options_2;
6536 nv->firmware_options_3 =
6537 ha->tgt.saved_firmware_options_3;
6538 }
6539 return;
6540 }
6541
6542 /* out-of-order frames reassembly */
6543 nv->firmware_options_3 |= BIT_6|BIT_9;
6544
6545 if (ha->tgt.enable_class_2) {
6546 if (vha->flags.init_done)
6547 fc_host_supported_classes(vha->host) =
6548 FC_COS_CLASS2 | FC_COS_CLASS3;
6549
ad950360 6550 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6551 } else {
6552 if (vha->flags.init_done)
6553 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6554
ad950360 6555 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6556 }
6557}
6558
6559void
6560qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6561 struct init_cb_24xx *icb)
6562{
6563 struct qla_hw_data *ha = vha->hw;
6564
481ce733
QT		 6565 if (!QLA_TGT_MODE_ENABLED())
6566 return;
6567
2d70c103
NB		 6568 if (ha->tgt.node_name_set) {
6569 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6570 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6571 }
481ce733
QT		 6572
6573 /* disable ZIO at start time. */
6574 if (!vha->flags.init_done) {
6575 uint32_t tmp;
6576 tmp = le32_to_cpu(icb->firmware_options_2);
6577 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6578 icb->firmware_options_2 = cpu_to_le32(tmp);
6579 }
2d70c103
NB		 6580}
6581
aa230bc5
AE		 6582void
6583qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6584{
6585 struct qla_hw_data *ha = vha->hw;
6586
6587 if (!QLA_TGT_MODE_ENABLED())
6588 return;
6589
6590 if (qla_tgt_mode_enabled(vha)) {
6591 if (!ha->tgt.saved_set) {
6592 /* We save only once */
6593 ha->tgt.saved_exchange_count = nv->exchange_count;
6594 ha->tgt.saved_firmware_options_1 =
6595 nv->firmware_options_1;
6596 ha->tgt.saved_firmware_options_2 =
6597 nv->firmware_options_2;
6598 ha->tgt.saved_firmware_options_3 =
6599 nv->firmware_options_3;
6600 ha->tgt.saved_set = 1;
6601 }
6602
ad950360 6603 nv->exchange_count = cpu_to_le16(0xFFFF);
aa230bc5
AE		 6604
6605 /* Enable target mode */
ad950360 6606 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6607
6608 /* Disable ini mode, if requested */
6609 if (!qla_ini_mode_enabled(vha))
ad950360 6610 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5
AE		 6611
6612 /* Disable Full Login after LIP */
ad950360 6613 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6614 /* Enable initial LIP */
ad950360 6615 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6616 if (ql2xtgt_tape_enable)
6617 /* Enable FC tape support */
6618 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6619 else
6620 /* Disable FC tape support */
6621 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6622
aa230bc5 6623 /* Disable Full Login after LIP */
ad950360 6624 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6625 /* Enable target PRLI control */
ad950360 6626 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6627 } else {
6628 if (ha->tgt.saved_set) {
6629 nv->exchange_count = ha->tgt.saved_exchange_count;
6630 nv->firmware_options_1 =
6631 ha->tgt.saved_firmware_options_1;
6632 nv->firmware_options_2 =
6633 ha->tgt.saved_firmware_options_2;
6634 nv->firmware_options_3 =
6635 ha->tgt.saved_firmware_options_3;
6636 }
6637 return;
6638 }
6639
6640 /* out-of-order frames reassembly */
6641 nv->firmware_options_3 |= BIT_6|BIT_9;
6642
6643 if (ha->tgt.enable_class_2) {
6644 if (vha->flags.init_done)
6645 fc_host_supported_classes(vha->host) =
6646 FC_COS_CLASS2 | FC_COS_CLASS3;
6647
ad950360 6648 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6649 } else {
6650 if (vha->flags.init_done)
6651 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6652
ad950360 6653 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6654 }
6655}
6656
6657void
6658qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6659 struct init_cb_81xx *icb)
6660{
6661 struct qla_hw_data *ha = vha->hw;
6662
6663 if (!QLA_TGT_MODE_ENABLED())
6664 return;
6665
6666 if (ha->tgt.node_name_set) {
6667 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6668 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6669 }
481ce733
QT		 6670
6671 /* disable ZIO at start time. */
6672 if (!vha->flags.init_done) {
6673 uint32_t tmp;
6674 tmp = le32_to_cpu(icb->firmware_options_2);
6675 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6676 icb->firmware_options_2 = cpu_to_le32(tmp);
6677 }
6678
aa230bc5
AE		 6679}
6680
6681void
6682qlt_83xx_iospace_config(struct qla_hw_data *ha)
6683{
6684 if (!QLA_TGT_MODE_ENABLED())
6685 return;
6686
6687 ha->msix_count += 1; /* For ATIO Q */
6688}
6689
2d70c103
NB		 6690int
6691qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6692 struct sts_entry_24xx *pkt)
6693{
6694 switch (pkt->entry_type) {
6695 case ABTS_RECV_24XX:
6696 case ABTS_RESP_24XX:
6697 case CTIO_TYPE7:
6698 case NOTIFY_ACK_TYPE:
f83adb61 6699 case CTIO_CRC2:
2d70c103
NB		 6700 return 1;
6701 default:
6702 return 0;
6703 }
6704}
6705
6706void
6707qlt_modify_vp_config(struct scsi_qla_host *vha,
6708 struct vp_config_entry_24xx *vpmod)
6709{
6710 if (qla_tgt_mode_enabled(vha))
6711 vpmod->options_idx1 &= ~BIT_5;
6712 /* Disable ini mode, if requested */
6713 if (!qla_ini_mode_enabled(vha))
6714 vpmod->options_idx1 &= ~BIT_4;
6715}
6716
6717void
6718qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6719{
6720 if (!QLA_TGT_MODE_ENABLED())
6721 return;
6722
b20f02e1 6723 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6724 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6725 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6726 } else {
6727 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6728 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6729 }
6730
0e8cd71c
SK		 6731 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6732 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6733 qlt_clear_mode(base_vha);
6734}
6735
aa230bc5
AE		 6736irqreturn_t
6737qla83xx_msix_atio_q(int irq, void *dev_id)
6738{
6739 struct rsp_que *rsp;
6740 scsi_qla_host_t *vha;
6741 struct qla_hw_data *ha;
6742 unsigned long flags;
6743
6744 rsp = (struct rsp_que *) dev_id;
6745 ha = rsp->hw;
6746 vha = pci_get_drvdata(ha->pdev);
6747
2f424b9b 6748 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6749
2f424b9b 6750 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6751
2f424b9b 6752 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6753
6754 return IRQ_HANDLED;
6755}
6756
2f424b9b
QT		 6757static void
6758qlt_handle_abts_recv_work(struct work_struct *work)
6759{
6760 struct qla_tgt_sess_op *op = container_of(work,
6761 struct qla_tgt_sess_op, work);
6762 scsi_qla_host_t *vha = op->vha;
6763 struct qla_hw_data *ha = vha->hw;
6764 unsigned long flags;
6765
6766 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6767 return;
6768
6769 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6770 qlt_24xx_process_atio_queue(vha, 0);
6771 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6772
6773 spin_lock_irqsave(&ha->hardware_lock, flags);
6774 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6775 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6776}
6777
6778void
6779qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6780{
6781 struct qla_tgt_sess_op *op;
6782
6783 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6784
6785 if (!op) {
6786 /* do not reach for ATIO queue here. This is best effort err
6787 * recovery at this point.
6788 */
6789 qlt_response_pkt_all_vps(vha, pkt);
6790 return;
6791 }
6792
6793 memcpy(&op->atio, pkt, sizeof(*pkt));
6794 op->vha = vha;
6795 op->chip_reset = vha->hw->chip_reset;
6796 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6797 queue_work(qla_tgt_wq, &op->work);
6798 return;
6799}
6800
2d70c103
NB		 6801int
6802qlt_mem_alloc(struct qla_hw_data *ha)
6803{
6804 if (!QLA_TGT_MODE_ENABLED())
6805 return 0;
6806
6807 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6808 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6809 if (!ha->tgt.tgt_vp_map)
6810 return -ENOMEM;
6811
6812 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6813 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6814 &ha->tgt.atio_dma, GFP_KERNEL);
6815 if (!ha->tgt.atio_ring) {
6816 kfree(ha->tgt.tgt_vp_map);
6817 return -ENOMEM;
6818 }
6819 return 0;
6820}
6821
6822void
6823qlt_mem_free(struct qla_hw_data *ha)
6824{
6825 if (!QLA_TGT_MODE_ENABLED())
6826 return;
6827
6828 if (ha->tgt.atio_ring) {
6829 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6830 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6831 ha->tgt.atio_dma);
6832 }
6833 kfree(ha->tgt.tgt_vp_map);
6834}
6835
6836/* vport_slock to be held by the caller */
6837void
6838qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6839{
6840 if (!QLA_TGT_MODE_ENABLED())
6841 return;
6842
6843 switch (cmd) {
6844 case SET_VP_IDX:
6845 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6846 break;
6847 case SET_AL_PA:
6848 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
6849 break;
6850 case RESET_VP_IDX:
6851 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6852 break;
6853 case RESET_AL_PA:
6854 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
6855 break;
6856 }
6857}
6858
6859static int __init qlt_parse_ini_mode(void)
6860{
6861 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6862 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6863 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6864 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6865 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6866 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
6867 else
6868 return false;
6869
6870 return true;
6871}
6872
6873int __init qlt_init(void)
6874{
6875 int ret;
6876
6877 if (!qlt_parse_ini_mode()) {
6878 ql_log(ql_log_fatal, NULL, 0xe06b,
6879 "qlt_parse_ini_mode() failed\n");
6880 return -EINVAL;
6881 }
6882
6883 if (!QLA_TGT_MODE_ENABLED())
6884 return 0;
6885
2d70c103
NB		 6886 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6887 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6888 qla_tgt_mgmt_cmd), 0, NULL);
6889 if (!qla_tgt_mgmt_cmd_cachep) {
6890 ql_log(ql_log_fatal, NULL, 0xe06d,
6891 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 6892 return -ENOMEM;
2d70c103
NB		 6893 }
6894
b7bd104e
AP		 6895 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
6896 sizeof(qlt_plogi_ack_t),
6897 __alignof__(qlt_plogi_ack_t),
6898 0, NULL);
6899
6900 if (!qla_tgt_plogi_cachep) {
6901 ql_log(ql_log_fatal, NULL, 0xe06d,
6902 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6903 ret = -ENOMEM;
6904 goto out_mgmt_cmd_cachep;
6905 }
6906
2d70c103
NB		 6907 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6908 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6909 if (!qla_tgt_mgmt_cmd_mempool) {
6910 ql_log(ql_log_fatal, NULL, 0xe06e,
6911 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6912 ret = -ENOMEM;
b7bd104e 6913 goto out_plogi_cachep;
2d70c103
NB		 6914 }
6915
6916 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6917 if (!qla_tgt_wq) {
6918 ql_log(ql_log_fatal, NULL, 0xe06f,
6919 "alloc_workqueue for qla_tgt_wq failed\n");
6920 ret = -ENOMEM;
6921 goto out_cmd_mempool;
6922 }
6923 /*
6924 * Return 1 to signal that initiator-mode is being disabled
6925 */
6926 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6927
6928out_cmd_mempool:
6929 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 6930out_plogi_cachep:
6931 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 6932out_mgmt_cmd_cachep:
6933 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 6934 return ret;
6935}
6936
6937void qlt_exit(void)
6938{
6939 if (!QLA_TGT_MODE_ENABLED())
6940 return;
6941
6942 destroy_workqueue(qla_tgt_wq);
6943 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 6944 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 6945 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 6946}
Linux 6.x block layer and io_uring tree(s)