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scsi: qla2xxx: Turn on FW option for exchange check
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
ead03855
QT		 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
59 "when ready "
2d70c103
NB		 60 "\"enabled\" (default) - initiator mode will always stay enabled.");
61
ead03855
QT		 62static int ql_dm_tgt_ex_pct = 50;
63module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
64MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
65 "For Dual Mode (qlini_mode=dual), this parameter determines "
66 "the percentage of exchanges/cmds FW will allocate resources "
67 "for Target mode.");
68
aa230bc5 69int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 70
33e79977
QT		 71static int temp_sam_status = SAM_STAT_BUSY;
72
2d70c103
NB		 73/*
74 * From scsi/fc/fc_fcp.h
75 */
76enum fcp_resp_rsp_codes {
77 FCP_TMF_CMPL = 0,
78 FCP_DATA_LEN_INVALID = 1,
79 FCP_CMND_FIELDS_INVALID = 2,
80 FCP_DATA_PARAM_MISMATCH = 3,
81 FCP_TMF_REJECTED = 4,
82 FCP_TMF_FAILED = 5,
83 FCP_TMF_INVALID_LUN = 9,
84};
85
86/*
87 * fc_pri_ta from scsi/fc/fc_fcp.h
88 */
89#define FCP_PTA_SIMPLE 0 /* simple task attribute */
90#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
91#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 92#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 93#define FCP_PTA_MASK 7 /* mask for task attribute field */
94#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
95#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
96
97/*
98 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
99 * must be called under HW lock and could unlock/lock it inside.
100 * It isn't an issue, since in the current implementation on the time when
101 * those functions are called:
102 *
103 * - Either context is IRQ and only IRQ handler can modify HW data,
104 * including rings related fields,
105 *
106 * - Or access to target mode variables from struct qla_tgt doesn't
107 * cross those functions boundaries, except tgt_stop, which
108 * additionally protected by irq_cmd_count.
109 */
110/* Predefs for callbacks handed to qla2xxx LLD */
111static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 112 struct atio_from_isp *pkt, uint8_t);
2d70c103 113static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
5d964837 114static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 115 int fn, void *iocb, int flags);
116static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
a07100e0 117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
b6a029e1
AE		 118static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
119 struct qla_tgt_cmd *cmd);
33e79977
QT		 120static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
121 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 122static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 123static void qlt_clear_tgt_db(struct qla_tgt *tgt);
a6ca8878
AP		 124static void qlt_send_notify_ack(struct scsi_qla_host *vha,
125 struct imm_ntfy_from_isp *ntfy,
126 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
127 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 128static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
129 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 130static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
131 fc_port_t *fcport, bool local);
132void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 133static void qlt_24xx_handle_abts(struct scsi_qla_host *,
134 struct abts_recv_from_24xx *);
135
2d70c103
NB		 136/*
137 * Global Variables
138 */
2d70c103 139static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b7bd104e 140static struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 141static mempool_t *qla_tgt_mgmt_cmd_mempool;
142static struct workqueue_struct *qla_tgt_wq;
143static DEFINE_MUTEX(qla_tgt_mutex);
144static LIST_HEAD(qla_tgt_glist);
145
be25152c
QT		 146static const char *prot_op_str(u32 prot_op)
147{
148 switch (prot_op) {
149 case TARGET_PROT_NORMAL: return "NORMAL";
150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
154 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
156 default: return "UNKNOWN";
157 }
158}
159
df673274
AP		 160/* This API intentionally takes dest as a parameter, rather than returning
161 * int value to avoid caller forgetting to issue wmb() after the store */
162void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
163{
164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
165 *dest = atomic_inc_return(&base_vha->generation_tick);
166 /* memory barrier */
167 wmb();
168}
169
2d70c103
NB		 170/* Might release hw lock, then reaquire!! */
171static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
172{
173 /* Send marker if required */
174 if (unlikely(vha->marker_needed != 0)) {
175 int rc = qla2x00_issue_marker(vha, vha_locked);
176 if (rc != QLA_SUCCESS) {
177 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
178 "qla_target(%d): issue_marker() failed\n",
179 vha->vp_idx);
180 }
181 return rc;
182 }
183 return QLA_SUCCESS;
184}
185
186static inline
187struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
188 uint8_t *d_id)
189{
482c9dc7
QT		 190 struct scsi_qla_host *host;
191 uint32_t key = 0;
2d70c103 192
482c9dc7
QT		 193 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
194 (vha->d_id.b.al_pa == d_id[2]))
2d70c103
NB		 195 return vha;
196
482c9dc7
QT		 197 key = (uint32_t)d_id[0] << 16;
198 key |= (uint32_t)d_id[1] << 8;
199 key |= (uint32_t)d_id[2];
2d70c103 200
482c9dc7
QT		 201 host = btree_lookup32(&vha->hw->tgt.host_map, key);
202 if (!host)
83548fe2
QT		 203 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
204 "Unable to find host %06x\n", key);
482c9dc7
QT		 205
206 return host;
2d70c103
NB		 207}
208
209static inline
210struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
211 uint16_t vp_idx)
212{
213 struct qla_hw_data *ha = vha->hw;
214
215 if (vha->vp_idx == vp_idx)
216 return vha;
217
218 BUG_ON(ha->tgt.tgt_vp_map == NULL);
219 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
220 return ha->tgt.tgt_vp_map[vp_idx].vha;
221
222 return NULL;
223}
224
33e79977
QT		 225static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
226{
227 unsigned long flags;
228
229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
230
231 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
233 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 234 vha->hw->tgt.num_pend_cmds;
235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
236}
237static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
238{
239 unsigned long flags;
240
241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
242 vha->hw->tgt.num_pend_cmds--;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244}
245
41dc529a
QT		 246
247static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
248 struct atio_from_isp *atio, uint8_t ha_locked)
249{
250 struct qla_tgt_sess_op *u;
251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
252 unsigned long flags;
253
254 if (tgt->tgt_stop) {
83548fe2
QT		 255 ql_dbg(ql_dbg_async, vha, 0x502c,
256 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
257 vha->vp_idx);
41dc529a
QT		 258 goto out_term;
259 }
260
261 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 262 if (u == NULL)
41dc529a 263 goto out_term;
41dc529a
QT		 264
265 u->vha = vha;
266 memcpy(&u->atio, atio, sizeof(*atio));
267 INIT_LIST_HEAD(&u->cmd_list);
268
269 spin_lock_irqsave(&vha->cmd_list_lock, flags);
270 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
271 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
272
273 schedule_delayed_work(&vha->unknown_atio_work, 1);
274
275out:
276 return;
277
278out_term:
279 qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0);
280 goto out;
281}
282
283static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
284 uint8_t ha_locked)
285{
286 struct qla_tgt_sess_op *u, *t;
287 scsi_qla_host_t *host;
288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
289 unsigned long flags;
290 uint8_t queued = 0;
291
292 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
293 if (u->aborted) {
83548fe2
QT		 294 ql_dbg(ql_dbg_async, vha, 0x502e,
295 "Freeing unknown %s %p, because of Abort\n",
41dc529a
QT		 296 "ATIO_TYPE7", u);
297 qlt_send_term_exchange(vha, NULL, &u->atio,
298 ha_locked, 0);
299 goto abort;
300 }
301
302 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
303 if (host != NULL) {
83548fe2
QT		 304 ql_dbg(ql_dbg_async, vha, 0x502f,
305 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
307 } else if (tgt->tgt_stop) {
83548fe2
QT		 308 ql_dbg(ql_dbg_async, vha, 0x503a,
309 "Freeing unknown %s %p, because tgt is being stopped\n",
310 "ATIO_TYPE7", u);
41dc529a
QT		 311 qlt_send_term_exchange(vha, NULL, &u->atio,
312 ha_locked, 0);
313 } else {
83548fe2
QT		 314 ql_dbg(ql_dbg_async, vha, 0x503d,
315 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 316 if (!queued) {
317 queued = 1;
318 schedule_delayed_work(&vha->unknown_atio_work,
319 1);
320 }
321 continue;
322 }
323
324abort:
325 spin_lock_irqsave(&vha->cmd_list_lock, flags);
326 list_del(&u->cmd_list);
327 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
328 kfree(u);
329 }
330}
331
332void qlt_unknown_atio_work_fn(struct work_struct *work)
333{
334 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
335 struct scsi_qla_host, unknown_atio_work);
336
337 qlt_try_to_dequeue_unknown_atios(vha, 0);
338}
339
3bb67df5 340static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 341 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 342{
f83adb61
QT		 343 ql_dbg(ql_dbg_tgt, vha, 0xe072,
344 "%s: qla_target(%d): type %x ox_id %04x\n",
345 __func__, vha->vp_idx, atio->u.raw.entry_type,
346 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
347
2d70c103
NB		 348 switch (atio->u.raw.entry_type) {
349 case ATIO_TYPE7:
350 {
351 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
352 atio->u.isp24.fcp_hdr.d_id);
353 if (unlikely(NULL == host)) {
354 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
355 "qla_target(%d): Received ATIO_TYPE7 "
356 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
357 atio->u.isp24.fcp_hdr.d_id[0],
358 atio->u.isp24.fcp_hdr.d_id[1],
359 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 360
361
362 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 363 break;
364 }
41dc529a
QT		 365 if (unlikely(!list_empty(&vha->unknown_atio_list)))
366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
367
2f424b9b 368 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 369 break;
370 }
371
372 case IMMED_NOTIFY_TYPE:
373 {
374 struct scsi_qla_host *host = vha;
375 struct imm_ntfy_from_isp *entry =
376 (struct imm_ntfy_from_isp *)atio;
377
378 if ((entry->u.isp24.vp_index != 0xFF) &&
379 (entry->u.isp24.nport_handle != 0xFFFF)) {
380 host = qlt_find_host_by_vp_idx(vha,
381 entry->u.isp24.vp_index);
382 if (unlikely(!host)) {
383 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
384 "qla_target(%d): Received "
385 "ATIO (IMMED_NOTIFY_TYPE) "
386 "with unknown vp_index %d\n",
387 vha->vp_idx, entry->u.isp24.vp_index);
388 break;
389 }
390 }
2f424b9b 391 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 392 break;
393 }
394
41dc529a
QT		 395 case VP_RPT_ID_IOCB_TYPE:
396 qla24xx_report_id_acquisition(vha,
397 (struct vp_rpt_id_entry_24xx *)atio);
398 break;
399
400 case ABTS_RECV_24XX:
401 {
402 struct abts_recv_from_24xx *entry =
403 (struct abts_recv_from_24xx *)atio;
404 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
405 entry->vp_index);
8f6fc8d4
QT		 406 unsigned long flags;
407
41dc529a 408 if (unlikely(!host)) {
83548fe2 409 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 410 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
411 "received, with unknown vp_index %d\n",
412 vha->vp_idx, entry->vp_index);
413 break;
414 }
8f6fc8d4
QT		 415 if (!ha_locked)
416 spin_lock_irqsave(&host->hw->hardware_lock, flags);
417 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
418 if (!ha_locked)
419 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 420 break;
41dc529a
QT		 421 }
422
423 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
424
2d70c103
NB		 425 default:
426 ql_dbg(ql_dbg_tgt, vha, 0xe040,
427 "qla_target(%d): Received unknown ATIO atio "
428 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
429 break;
430 }
431
3bb67df5 432 return false;
2d70c103
NB		 433}
434
435void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
436{
437 switch (pkt->entry_type) {
f83adb61
QT		 438 case CTIO_CRC2:
439 ql_dbg(ql_dbg_tgt, vha, 0xe073,
440 "qla_target(%d):%s: CRC2 Response pkt\n",
441 vha->vp_idx, __func__);
2d70c103
NB		 442 case CTIO_TYPE7:
443 {
444 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
445 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
446 entry->vp_index);
447 if (unlikely(!host)) {
448 ql_dbg(ql_dbg_tgt, vha, 0xe041,
449 "qla_target(%d): Response pkt (CTIO_TYPE7) "
450 "received, with unknown vp_index %d\n",
451 vha->vp_idx, entry->vp_index);
452 break;
453 }
454 qlt_response_pkt(host, pkt);
455 break;
456 }
457
458 case IMMED_NOTIFY_TYPE:
459 {
460 struct scsi_qla_host *host = vha;
461 struct imm_ntfy_from_isp *entry =
462 (struct imm_ntfy_from_isp *)pkt;
463
464 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
465 if (unlikely(!host)) {
466 ql_dbg(ql_dbg_tgt, vha, 0xe042,
467 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
468 "received, with unknown vp_index %d\n",
469 vha->vp_idx, entry->u.isp24.vp_index);
470 break;
471 }
472 qlt_response_pkt(host, pkt);
473 break;
474 }
475
476 case NOTIFY_ACK_TYPE:
477 {
478 struct scsi_qla_host *host = vha;
479 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
480
481 if (0xFF != entry->u.isp24.vp_index) {
482 host = qlt_find_host_by_vp_idx(vha,
483 entry->u.isp24.vp_index);
484 if (unlikely(!host)) {
485 ql_dbg(ql_dbg_tgt, vha, 0xe043,
486 "qla_target(%d): Response "
487 "pkt (NOTIFY_ACK_TYPE) "
488 "received, with unknown "
489 "vp_index %d\n", vha->vp_idx,
490 entry->u.isp24.vp_index);
491 break;
492 }
493 }
494 qlt_response_pkt(host, pkt);
495 break;
496 }
497
498 case ABTS_RECV_24XX:
499 {
500 struct abts_recv_from_24xx *entry =
501 (struct abts_recv_from_24xx *)pkt;
502 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
503 entry->vp_index);
504 if (unlikely(!host)) {
505 ql_dbg(ql_dbg_tgt, vha, 0xe044,
506 "qla_target(%d): Response pkt "
507 "(ABTS_RECV_24XX) received, with unknown "
508 "vp_index %d\n", vha->vp_idx, entry->vp_index);
509 break;
510 }
511 qlt_response_pkt(host, pkt);
512 break;
513 }
514
515 case ABTS_RESP_24XX:
516 {
517 struct abts_resp_to_24xx *entry =
518 (struct abts_resp_to_24xx *)pkt;
519 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
520 entry->vp_index);
521 if (unlikely(!host)) {
522 ql_dbg(ql_dbg_tgt, vha, 0xe045,
523 "qla_target(%d): Response pkt "
524 "(ABTS_RECV_24XX) received, with unknown "
525 "vp_index %d\n", vha->vp_idx, entry->vp_index);
526 break;
527 }
528 qlt_response_pkt(host, pkt);
529 break;
530 }
531
532 default:
533 qlt_response_pkt(vha, pkt);
534 break;
535 }
536
537}
538
b7bd104e
AP		 539/*
540 * All qlt_plogi_ack_t operations are protected by hardware_lock
541 */
726b8548
QT		 542static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
543 struct imm_ntfy_from_isp *ntfy, int type)
544{
545 struct qla_work_evt *e;
546 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
547 if (!e)
548 return QLA_FUNCTION_FAILED;
549
550 e->u.nack.fcport = fcport;
551 e->u.nack.type = type;
552 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
553 return qla2x00_post_work(vha, e);
554}
555
556static
25ff6af1 557void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 558{
726b8548 559 struct srb *sp = (struct srb *)s;
25ff6af1 560 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 561 unsigned long flags;
562
83548fe2
QT		 563 ql_dbg(ql_dbg_disc, vha, 0x20f2,
564 "Async done-%s res %x %8phC type %d\n",
565 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 566
567 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
568 sp->fcport->flags &= ~FCF_ASYNC_SENT;
569 sp->fcport->chip_reset = vha->hw->chip_reset;
570
571 switch (sp->type) {
572 case SRB_NACK_PLOGI:
573 sp->fcport->login_gen++;
574 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
575 sp->fcport->logout_on_delete = 1;
5b33469a 576 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
726b8548
QT		 577 break;
578
579 case SRB_NACK_PRLI:
580 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
581 sp->fcport->deleted = 0;
582
583 if (!sp->fcport->login_succ &&
584 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
585 sp->fcport->login_succ = 1;
586
587 vha->fcport_count++;
588
589 if (!IS_IIDMA_CAPABLE(vha->hw) ||
590 !vha->hw->flags.gpsc_supported) {
83548fe2
QT		 591 ql_dbg(ql_dbg_disc, vha, 0x20f3,
592 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
593 __func__, __LINE__,
594 sp->fcport->port_name,
595 vha->fcport_count);
726b8548
QT		 596
597 qla24xx_post_upd_fcport_work(vha, sp->fcport);
598 } else {
83548fe2
QT		 599 ql_dbg(ql_dbg_disc, vha, 0x20f5,
600 "%s %d %8phC post gpsc fcp_cnt %d\n",
601 __func__, __LINE__,
602 sp->fcport->port_name,
603 vha->fcport_count);
726b8548
QT		 604
605 qla24xx_post_gpsc_work(vha, sp->fcport);
606 }
607 }
608 break;
609
610 case SRB_NACK_LOGO:
611 sp->fcport->login_gen++;
612 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
613 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
614 break;
615 }
616 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
617
25ff6af1 618 sp->free(sp);
726b8548
QT		 619}
620
621int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
622 struct imm_ntfy_from_isp *ntfy, int type)
623{
624 int rval = QLA_FUNCTION_FAILED;
625 srb_t *sp;
626 char *c = NULL;
627
628 fcport->flags |= FCF_ASYNC_SENT;
629 switch (type) {
630 case SRB_NACK_PLOGI:
631 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
632 c = "PLOGI";
633 break;
634 case SRB_NACK_PRLI:
635 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 636 fcport->deleted = 0;
726b8548
QT		 637 c = "PRLI";
638 break;
639 case SRB_NACK_LOGO:
640 fcport->fw_login_state = DSC_LS_LOGO_PEND;
641 c = "LOGO";
642 break;
643 }
644
645 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
646 if (!sp)
647 goto done;
648
649 sp->type = type;
650 sp->name = "nack";
651
652 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
653
654 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
655
656 sp->done = qla2x00_async_nack_sp_done;
657
658 rval = qla2x00_start_sp(sp);
659 if (rval != QLA_SUCCESS)
660 goto done_free_sp;
661
83548fe2
QT		 662 ql_dbg(ql_dbg_disc, vha, 0x20f4,
663 "Async-%s %8phC hndl %x %s\n",
664 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 665
666 return rval;
667
668done_free_sp:
25ff6af1 669 sp->free(sp);
726b8548
QT		 670done:
671 fcport->flags &= ~FCF_ASYNC_SENT;
672 return rval;
673}
674
675void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
676{
677 fc_port_t *t;
678 unsigned long flags;
679
680 switch (e->u.nack.type) {
681 case SRB_NACK_PRLI:
682 mutex_lock(&vha->vha_tgt.tgt_mutex);
683 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
684 mutex_unlock(&vha->vha_tgt.tgt_mutex);
685 if (t) {
83548fe2 686 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 687 "%s create sess success %p", __func__, t);
688 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
689 /* create sess has an extra kref */
690 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
691 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
692 }
693 break;
694 }
695 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
696 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
697}
698
699void qla24xx_delete_sess_fn(struct work_struct *work)
700{
701 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
702 struct qla_hw_data *ha = fcport->vha->hw;
703 unsigned long flags;
704
705 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
706
707 if (fcport->se_sess) {
708 ha->tgt.tgt_ops->shutdown_sess(fcport);
709 ha->tgt.tgt_ops->put_sess(fcport);
710 } else {
711 qlt_unreg_sess(fcport);
712 }
713 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
714}
715
716/*
717 * Called from qla2x00_reg_remote_port()
718 */
719void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
720{
721 struct qla_hw_data *ha = vha->hw;
722 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
723 struct fc_port *sess = fcport;
724 unsigned long flags;
725
726 if (!vha->hw->tgt.tgt_ops)
727 return;
728
729 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
730 if (tgt->tgt_stop) {
731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
732 return;
733 }
734
735 if (fcport->disc_state == DSC_DELETE_PEND) {
736 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
737 return;
738 }
739
740 if (!sess->se_sess) {
741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
742
743 mutex_lock(&vha->vha_tgt.tgt_mutex);
744 sess = qlt_create_sess(vha, fcport, false);
745 mutex_unlock(&vha->vha_tgt.tgt_mutex);
746
747 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
748 } else {
749 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
751 return;
752 }
753
754 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 755 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 756 "%s: kref_get fail sess %8phC \n",
757 __func__, sess->port_name);
758 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
759 return;
760 }
761
762 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
763 "qla_target(%u): %ssession for port %8phC "
764 "(loop ID %d) reappeared\n", vha->vp_idx,
765 sess->local ? "local " : "", sess->port_name, sess->loop_id);
766
767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
768 "Reappeared sess %p\n", sess);
769
770 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
771 fcport->loop_id,
772 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
773 }
774
775 if (sess && sess->local) {
776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
777 "qla_target(%u): local session for "
778 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
779 fcport->port_name, sess->loop_id);
780 sess->local = 0;
781 }
782 ha->tgt.tgt_ops->put_sess(sess);
783 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
784}
b7bd104e
AP		 785
786/*
787 * This is a zero-base ref-counting solution, since hardware_lock
788 * guarantees that ref_count is not modified concurrently.
789 * Upon successful return content of iocb is undefined
790 */
5d964837 791static struct qlt_plogi_ack_t *
b7bd104e
AP		 792qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
793 struct imm_ntfy_from_isp *iocb)
794{
5d964837 795 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 796
797 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
798 if (pla->id.b24 == id->b24) {
799 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 800 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 801 return pla;
802 }
803 }
804
805 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
806 if (!pla) {
807 ql_dbg(ql_dbg_async, vha, 0x5088,
808 "qla_target(%d): Allocation of plogi_ack failed\n",
809 vha->vp_idx);
810 return NULL;
811 }
812
5d964837 813 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 814 pla->id = *id;
815 list_add_tail(&pla->list, &vha->plogi_ack_list);
816
817 return pla;
818}
819
726b8548 820void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 821 struct qlt_plogi_ack_t *pla)
b7bd104e 822{
5d964837 823 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 824 port_id_t port_id;
825 uint16_t loop_id;
826 fc_port_t *fcport = pla->fcport;
827
b7bd104e
AP		 828 BUG_ON(!pla->ref_count);
829 pla->ref_count--;
830
831 if (pla->ref_count)
832 return;
833
726b8548 834 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 835 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 836 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
837 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
838 iocb->u.isp24.port_id[0],
839 le16_to_cpu(iocb->u.isp24.nport_handle),
840 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 841
842 port_id.b.domain = iocb->u.isp24.port_id[2];
843 port_id.b.area = iocb->u.isp24.port_id[1];
844 port_id.b.al_pa = iocb->u.isp24.port_id[0];
845 port_id.b.rsvd_1 = 0;
846
847 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
848
849 fcport->loop_id = loop_id;
850 fcport->d_id = port_id;
851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
852
853 list_for_each_entry(fcport, &vha->vp_fcports, list) {
854 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
855 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
856 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
857 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
858 }
b7bd104e
AP		 859
860 list_del(&pla->list);
861 kmem_cache_free(qla_tgt_plogi_cachep, pla);
862}
863
726b8548 864void
5d964837
QT		 865qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
866 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 867{
5d964837 868 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 869 /* Inc ref_count first because link might already be pointing at pla */
870 pla->ref_count++;
871
726b8548
QT		 872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
873 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
874 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
875 sess, link, sess->port_name,
876 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
878 pla->ref_count, pla, link);
879
b7bd104e
AP		 880 if (sess->plogi_link[link])
881 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
882
726b8548
QT		 883 if (link == QLT_PLOGI_LINK_SAME_WWN)
884 pla->fcport = sess;
b7bd104e
AP		 885
886 sess->plogi_link[link] = pla;
887}
888
71cdc079
AP		 889typedef struct {
890 /* These fields must be initialized by the caller */
891 port_id_t id;
892 /*
893 * number of cmds dropped while we were waiting for
894 * initiator to ack LOGO initialize to 1 if LOGO is
895 * triggered by a command, otherwise, to 0
896 */
897 int cmd_count;
898
899 /* These fields are used by callee */
900 struct list_head list;
901} qlt_port_logo_t;
902
903static void
904qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
905{
906 qlt_port_logo_t *tmp;
907 int res;
908
909 mutex_lock(&vha->vha_tgt.tgt_mutex);
910
911 list_for_each_entry(tmp, &vha->logo_list, list) {
912 if (tmp->id.b24 == logo->id.b24) {
913 tmp->cmd_count += logo->cmd_count;
914 mutex_unlock(&vha->vha_tgt.tgt_mutex);
915 return;
916 }
917 }
918
919 list_add_tail(&logo->list, &vha->logo_list);
920
921 mutex_unlock(&vha->vha_tgt.tgt_mutex);
922
923 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
924
925 mutex_lock(&vha->vha_tgt.tgt_mutex);
926 list_del(&logo->list);
927 mutex_unlock(&vha->vha_tgt.tgt_mutex);
928
b7bd104e
AP		 929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
930 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
931 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
932 logo->cmd_count, res);
71cdc079
AP		 933}
934
2d70c103
NB		 935static void qlt_free_session_done(struct work_struct *work)
936{
5d964837 937 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 938 free_work);
939 struct qla_tgt *tgt = sess->tgt;
940 struct scsi_qla_host *vha = sess->vha;
941 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 942 unsigned long flags;
943 bool logout_started = false;
726b8548 944 struct event_arg ea;
41dc529a 945 scsi_qla_host_t *base_vha;
a6ca8878
AP		 946
947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
948 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 949 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 950 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 951 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 952 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 953 sess->send_els_logo);
2d70c103 954
a6ca8878 955
726b8548 956 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 957 if (sess->send_els_logo) {
958 qlt_port_logo_t logo;
71cdc079 959
41dc529a
QT		 960 logo.id = sess->d_id;
961 logo.cmd_count = 0;
962 qlt_send_first_logo(vha, &logo);
963 }
964
965 if (sess->logout_on_delete) {
966 int rc;
967
968 rc = qla2x00_post_async_logout_work(vha, sess, NULL);
969 if (rc != QLA_SUCCESS)
970 ql_log(ql_log_warn, vha, 0xf085,
971 "Schedule logo failed sess %p rc %d\n",
972 sess, rc);
973 else
974 logout_started = true;
975 }
726b8548 976 }
a6ca8878 977
2d70c103
NB		 978 /*
979 * Release the target session for FC Nexus from fabric module code.
980 */
981 if (sess->se_sess != NULL)
982 ha->tgt.tgt_ops->free_session(sess);
983
a6ca8878
AP		 984 if (logout_started) {
985 bool traced = false;
986
987 while (!ACCESS_ONCE(sess->logout_completed)) {
988 if (!traced) {
989 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
990 "%s: waiting for sess %p logout\n",
991 __func__, sess);
992 traced = true;
993 }
994 msleep(100);
995 }
996
726b8548 997 ql_dbg(ql_dbg_disc, vha, 0xf087,
41dc529a
QT		 998 "%s: sess %p logout completed\n",__func__, sess);
999 }
1000
1001 if (sess->logo_ack_needed) {
1002 sess->logo_ack_needed = 0;
1003 qla24xx_async_notify_ack(vha, sess,
1004 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1005 }
1006
726b8548
QT		 1007 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1008 if (sess->se_sess) {
1009 sess->se_sess = NULL;
1010 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1011 tgt->sess_count--;
1012 }
1013
1014 sess->disc_state = DSC_DELETED;
1015 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1016 sess->deleted = QLA_SESS_DELETED;
1017 sess->login_retry = vha->hw->login_retry_count;
1018
1019 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1020 vha->fcport_count--;
1021 sess->login_succ = 0;
1022 }
1023
1024 if (sess->chip_reset != sess->vha->hw->chip_reset)
1025 qla2x00_clear_loop_id(sess);
1026
1027 if (sess->conflict) {
1028 sess->conflict->login_pause = 0;
1029 sess->conflict = NULL;
1030 if (!test_bit(UNLOADING, &vha->dpc_flags))
1031 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1032 }
1033
b7bd104e 1034 {
5d964837 1035 struct qlt_plogi_ack_t *own =
b7bd104e 1036 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
5d964837 1037 struct qlt_plogi_ack_t *con =
b7bd104e 1038 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1039 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1040
1041 if (con) {
5d964837 1042 iocb = &con->iocb;
b7bd104e 1043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1044 "se_sess %p / sess %p port %8phC is gone,"
1045 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1046 sess->se_sess, sess, sess->port_name,
1047 own ? "releasing own PLOGI" : "no own PLOGI pending",
1048 own ? own->ref_count : -1,
1049 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1050 qlt_plogi_ack_unref(vha, con);
726b8548 1051 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1052 } else {
1053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1054 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1055 sess->se_sess, sess, sess->port_name,
1056 own ? "releasing own PLOGI" :
1057 "no own PLOGI pending",
1058 own ? own->ref_count : -1);
1059 }
1060
726b8548
QT		 1061 if (own) {
1062 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1063 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1064 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1065 }
b7bd104e 1066 }
5d964837
QT		 1067 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1068
2d70c103 1069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1070 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1071 sess, sess->port_name, vha->fcport_count);
2d70c103 1072
726b8548 1073 if (tgt && (tgt->sess_count == 0))
2d70c103 1074 wake_up_all(&tgt->waitQ);
726b8548
QT		 1075
1076 if (vha->fcport_count == 0)
1077 wake_up_all(&vha->fcport_waitQ);
1078
41dc529a
QT		 1079 base_vha = pci_get_drvdata(ha->pdev);
1080 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1081 return;
1082
726b8548
QT		 1083 if (!tgt || !tgt->tgt_stop) {
1084 memset(&ea, 0, sizeof(ea));
1085 ea.event = FCME_DELETE_DONE;
1086 ea.fcport = sess;
1087 qla2x00_fcport_event_handler(vha, &ea);
1088 }
2d70c103
NB		 1089}
1090
7560151b 1091/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1092void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1093{
1094 struct scsi_qla_host *vha = sess->vha;
1095
83548fe2 1096 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1097 "%s sess %p for deletion %8phC\n",
1098 __func__, sess, sess->port_name);
1099
36c78452
QT		 1100 if (sess->se_sess)
1101 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1102
5d964837
QT		 1103 qla2x00_mark_device_lost(vha, sess, 1, 1);
1104
a6ca8878 1105 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1106 sess->disc_state = DSC_DELETE_PEND;
1107 sess->last_rscn_gen = sess->rscn_gen;
1108 sess->last_login_gen = sess->login_gen;
2d70c103
NB		 1109
1110 INIT_WORK(&sess->free_work, qlt_free_session_done);
1111 schedule_work(&sess->free_work);
1112}
5d964837 1113EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1114
2d70c103
NB		 1115static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1116{
1117 struct qla_hw_data *ha = vha->hw;
5d964837 1118 struct fc_port *sess = NULL;
2d70c103
NB		 1119 uint16_t loop_id;
1120 int res = 0;
1121 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1122 unsigned long flags;
2d70c103
NB		 1123
1124 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1125 if (loop_id == 0xFFFF) {
2d70c103 1126 /* Global event */
b2032fd5 1127 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1128 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1129 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1130 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1131 } else {
7560151b 1132 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1133 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1134 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1135 }
1136
1137 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1138 "Using sess for qla_tgt_reset: %p\n", sess);
1139 if (!sess) {
1140 res = -ESRCH;
1141 return res;
1142 }
1143
1144 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1145 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1146 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1147 mcmd, loop_id);
1148
bb1181c9 1149 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1150}
1151
726b8548
QT		 1152static void qla24xx_chk_fcp_state(struct fc_port *sess)
1153{
1154 if (sess->chip_reset != sess->vha->hw->chip_reset) {
1155 sess->logout_on_delete = 0;
1156 sess->logo_ack_needed = 0;
1157 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1158 sess->scan_state = 0;
1159 }
1160}
1161
7560151b 1162/* ha->tgt.sess_lock supposed to be held on entry */
726b8548 1163void qlt_schedule_sess_for_deletion(struct fc_port *sess,
2d70c103
NB		 1164 bool immediate)
1165{
1166 struct qla_tgt *tgt = sess->tgt;
2d70c103 1167
726b8548
QT		 1168 if (sess->disc_state == DSC_DELETE_PEND)
1169 return;
1170
1171 if (sess->disc_state == DSC_DELETED) {
1172 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1173 wake_up_all(&tgt->waitQ);
1174 if (sess->vha->fcport_count == 0)
1175 wake_up_all(&sess->vha->fcport_waitQ);
1176
1177 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1178 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1179 return;
1180 }
2d70c103 1181
726b8548 1182 sess->disc_state = DSC_DELETE_PEND;
2d70c103 1183
726b8548
QT		 1184 if (sess->deleted == QLA_SESS_DELETED)
1185 sess->logout_on_delete = 0;
1186
1187 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1188 qla24xx_chk_fcp_state(sess);
2d70c103 1189
726b8548
QT		 1190 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1191 "Scheduling sess %p for deletion\n", sess);
2d70c103 1192
726b8548
QT		 1193 schedule_work(&sess->del_work);
1194}
2d70c103 1195
726b8548
QT		 1196void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
1197{
1198 unsigned long flags;
1199 struct qla_hw_data *ha = sess->vha->hw;
1200 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1201 qlt_schedule_sess_for_deletion(sess, 1);
1202 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1203}
1204
7560151b 1205/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1206static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1207{
5d964837
QT		 1208 struct fc_port *sess;
1209 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1210
5d964837
QT		 1211 list_for_each_entry(sess, &vha->vp_fcports, list) {
1212 if (sess->se_sess)
726b8548 1213 qlt_schedule_sess_for_deletion(sess, 1);
5d964837 1214 }
2d70c103
NB		 1215
1216 /* At this point tgt could be already dead */
1217}
1218
1219static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1220 uint16_t *loop_id)
1221{
1222 struct qla_hw_data *ha = vha->hw;
1223 dma_addr_t gid_list_dma;
1224 struct gid_list_info *gid_list;
1225 char *id_iter;
1226 int res, rc, i;
1227 uint16_t entries;
1228
1229 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1230 &gid_list_dma, GFP_KERNEL);
1231 if (!gid_list) {
1232 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1233 "qla_target(%d): DMA Alloc failed of %u\n",
1234 vha->vp_idx, qla2x00_gid_list_size(ha));
1235 return -ENOMEM;
1236 }
1237
1238 /* Get list of logged in devices */
15f30a57 1239 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1240 if (rc != QLA_SUCCESS) {
1241 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1242 "qla_target(%d): get_id_list() failed: %x\n",
1243 vha->vp_idx, rc);
71cdc079 1244 res = -EBUSY;
2d70c103
NB		 1245 goto out_free_id_list;
1246 }
1247
1248 id_iter = (char *)gid_list;
71cdc079 1249 res = -ENOENT;
2d70c103
NB		 1250 for (i = 0; i < entries; i++) {
1251 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1252 if ((gid->al_pa == s_id[2]) &&
1253 (gid->area == s_id[1]) &&
1254 (gid->domain == s_id[0])) {
1255 *loop_id = le16_to_cpu(gid->loop_id);
1256 res = 0;
1257 break;
1258 }
1259 id_iter += ha->gid_list_info_size;
1260 }
1261
1262out_free_id_list:
1263 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1264 gid_list, gid_list_dma);
1265 return res;
1266}
1267
2d70c103
NB		 1268/*
1269 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1270 * Caller must put it.
1271 */
5d964837 1272static struct fc_port *qlt_create_sess(
2d70c103
NB		 1273 struct scsi_qla_host *vha,
1274 fc_port_t *fcport,
1275 bool local)
1276{
1277 struct qla_hw_data *ha = vha->hw;
726b8548 1278 struct fc_port *sess = fcport;
2d70c103 1279 unsigned long flags;
2d70c103 1280
726b8548
QT		 1281 if (vha->vha_tgt.qla_tgt->tgt_stop)
1282 return NULL;
2d70c103 1283
726b8548
QT		 1284 if (fcport->se_sess) {
1285 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1286 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1287 "%s: kref_get_unless_zero failed for %8phC\n",
1288 __func__, sess->port_name);
1289 return NULL;
2d70c103 1290 }
726b8548 1291 return fcport;
2d70c103 1292 }
0e8cd71c 1293 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1294 sess->local = local;
a6ca8878 1295
726b8548
QT		 1296 /*
1297 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1298 * session eventually ends and release corresponding nport handle.
1299 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1300 * code will adjust these flags as necessary.
1301 */
a6ca8878
AP		 1302 sess->logout_on_delete = 1;
1303 sess->keep_nport_handle = 0;
726b8548 1304 sess->logout_completed = 0;
2d70c103 1305
726b8548
QT		 1306 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1307 &fcport->port_name[0], sess) < 0) {
83548fe2 1308 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1309 "(%d) %8phC check_initiator_node_acl failed\n",
1310 vha->vp_idx, fcport->port_name);
1311 return NULL;
1312 } else {
1313 kref_init(&fcport->sess_kref);
1314 /*
1315 * Take an extra reference to ->sess_kref here to handle
1316 * fc_port access across ->tgt.sess_lock reaquire.
1317 */
1318 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1319 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1320 "%s: kref_get_unless_zero failed for %8phC\n",
1321 __func__, sess->port_name);
1322 return NULL;
1323 }
2d70c103 1324
726b8548
QT		 1325 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1326 if (!IS_SW_RESV_ADDR(sess->d_id))
1327 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1328
726b8548
QT		 1329 qlt_do_generation_tick(vha, &sess->generation);
1330 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1331 }
1332
1333 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1334 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1335 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1336 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1337
1338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1339 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1340 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1341 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1342 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1343 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1344
1345 return sess;
1346}
1347
df673274
AP		 1348/*
1349 * max_gen - specifies maximum session generation
1350 * at which this deletion requestion is still valid
1351 */
1352void
1353qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1354{
0e8cd71c 1355 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1356 struct fc_port *sess = fcport;
7560151b 1357 unsigned long flags;
2d70c103
NB		 1358
1359 if (!vha->hw->tgt.tgt_ops)
1360 return;
1361
b2032fd5 1362 if (!tgt)
2d70c103
NB		 1363 return;
1364
7560151b 1365 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1366 if (tgt->tgt_stop) {
7560151b 1367 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1368 return;
1369 }
5d964837 1370 if (!sess->se_sess) {
7560151b 1371 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1372 return;
1373 }
1374
df673274 1375 if (max_gen - sess->generation < 0) {
7560151b 1376 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1378 "Ignoring stale deletion request for se_sess %p / sess %p"
1379 " for port %8phC, req_gen %d, sess_gen %d\n",
1380 sess->se_sess, sess, sess->port_name, max_gen,
1381 sess->generation);
1382 return;
1383 }
1384
2d70c103
NB		 1385 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1386
1387 sess->local = 1;
1388 qlt_schedule_sess_for_deletion(sess, false);
7560151b 1389 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1390}
1391
1392static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1393{
1394 struct qla_hw_data *ha = tgt->ha;
1395 unsigned long flags;
1396 int res;
1397 /*
1398 * We need to protect against race, when tgt is freed before or
1399 * inside wake_up()
1400 */
726b8548 1401 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1402 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1403 "tgt %p, sess_count=%d\n",
1404 tgt, tgt->sess_count);
2d70c103 1405 res = (tgt->sess_count == 0);
726b8548 1406 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1407
1408 return res;
1409}
1410
1411/* Called by tcm_qla2xxx configfs code */
3c231bda 1412int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1413{
1414 struct scsi_qla_host *vha = tgt->vha;
1415 struct qla_hw_data *ha = tgt->ha;
1416 unsigned long flags;
1417
3c231bda
NB		 1418 mutex_lock(&qla_tgt_mutex);
1419 if (!vha->fc_vport) {
1420 struct Scsi_Host *sh = vha->host;
1421 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1422 bool npiv_vports;
1423
1424 spin_lock_irqsave(sh->host_lock, flags);
1425 npiv_vports = (fc_host->npiv_vports_inuse);
1426 spin_unlock_irqrestore(sh->host_lock, flags);
1427
1428 if (npiv_vports) {
1429 mutex_unlock(&qla_tgt_mutex);
1430 return -EPERM;
1431 }
1432 }
2d70c103
NB		 1433 if (tgt->tgt_stop || tgt->tgt_stopped) {
1434 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1435 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1436 mutex_unlock(&qla_tgt_mutex);
1437 return -EPERM;
2d70c103
NB		 1438 }
1439
1440 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
1441 vha->host_no, vha);
1442 /*
1443 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1444 * Lock is needed, because we still can get an incoming packet.
1445 */
0e8cd71c 1446 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1447 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1448 tgt->tgt_stop = 1;
c5701042 1449 qlt_clear_tgt_db(tgt);
7560151b 1450 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1451 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1452 mutex_unlock(&qla_tgt_mutex);
2d70c103 1453
2d70c103
NB		 1454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1455 "Waiting for sess works (tgt %p)", tgt);
1456 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1457 while (!list_empty(&tgt->sess_works_list)) {
1458 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1459 flush_scheduled_work();
1460 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1461 }
1462 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1463
1464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1465 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103
NB		 1466
1467 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1468
1469 /* Big hammer */
ead03855
QT		 1470 if (!ha->flags.host_shutting_down &&
1471 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1472 qlt_disable_vha(vha);
1473
1474 /* Wait for sessions to clear out (just in case) */
1475 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1476 return 0;
2d70c103
NB		 1477}
1478EXPORT_SYMBOL(qlt_stop_phase1);
1479
1480/* Called by tcm_qla2xxx configfs code */
1481void qlt_stop_phase2(struct qla_tgt *tgt)
1482{
1483 struct qla_hw_data *ha = tgt->ha;
0e8cd71c 1484 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 1485 unsigned long flags;
1486
1487 if (tgt->tgt_stopped) {
0e8cd71c 1488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1489 "Already in tgt->tgt_stopped state\n");
1490 dump_stack();
1491 return;
1492 }
1493
0e8cd71c 1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
2d70c103
NB		 1495 "Waiting for %d IRQ commands to complete (tgt %p)",
1496 tgt->irq_cmd_count, tgt);
1497
0e8cd71c 1498 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1499 spin_lock_irqsave(&ha->hardware_lock, flags);
2f424b9b 1500 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) {
2d70c103
NB		 1501 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1502 udelay(2);
1503 spin_lock_irqsave(&ha->hardware_lock, flags);
1504 }
1505 tgt->tgt_stop = 0;
1506 tgt->tgt_stopped = 1;
1507 spin_unlock_irqrestore(&ha->hardware_lock, flags);
0e8cd71c 1508 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1509
0e8cd71c 1510 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished",
2d70c103
NB		 1511 tgt);
1512}
1513EXPORT_SYMBOL(qlt_stop_phase2);
1514
1515/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1516static void qlt_release(struct qla_tgt *tgt)
2d70c103 1517{
0e8cd71c 1518 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1519
0e8cd71c 1520 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1521 qlt_stop_phase2(tgt);
1522
0e8cd71c 1523 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1524
0e8cd71c 1525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1526 "Release of tgt %p finished\n", tgt);
1527
1528 kfree(tgt);
1529}
1530
1531/* ha->hardware_lock supposed to be held on entry */
1532static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1533 const void *param, unsigned int param_size)
1534{
1535 struct qla_tgt_sess_work_param *prm;
1536 unsigned long flags;
1537
1538 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1539 if (!prm) {
1540 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1541 "qla_target(%d): Unable to create session "
1542 "work, command will be refused", 0);
1543 return -ENOMEM;
1544 }
1545
1546 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1547 "Scheduling work (type %d, prm %p)"
1548 " to find session for param %p (size %d, tgt %p)\n",
1549 type, prm, param, param_size, tgt);
1550
1551 prm->type = type;
1552 memcpy(&prm->tm_iocb, param, param_size);
1553
1554 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1555 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1556 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1557
1558 schedule_work(&tgt->sess_work);
1559
1560 return 0;
1561}
1562
1563/*
1564 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1565 */
1566static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1567 struct imm_ntfy_from_isp *ntfy,
1568 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1569 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1570{
1571 struct qla_hw_data *ha = vha->hw;
1572 request_t *pkt;
1573 struct nack_to_isp *nack;
1574
ec7193e2
QT		 1575 if (!ha->flags.fw_started)
1576 return;
1577
2d70c103
NB		 1578 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1579
1580 /* Send marker if required */
1581 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1582 return;
1583
1584 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1585 if (!pkt) {
1586 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1587 "qla_target(%d): %s failed: unable to allocate "
1588 "request packet\n", vha->vp_idx, __func__);
1589 return;
1590 }
1591
0e8cd71c
SK		 1592 if (vha->vha_tgt.qla_tgt != NULL)
1593 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1594
1595 pkt->entry_type = NOTIFY_ACK_TYPE;
1596 pkt->entry_count = 1;
1597
1598 nack = (struct nack_to_isp *)pkt;
1599 nack->ox_id = ntfy->ox_id;
1600
726b8548 1601 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1602 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1603 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1604 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1605 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1606 }
1607 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1608 nack->u.isp24.status = ntfy->u.isp24.status;
1609 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1610 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1611 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1612 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1613 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1614 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1615 nack->u.isp24.srr_reject_code = srr_reject_code;
1616 nack->u.isp24.srr_reject_code_expl = srr_explan;
1617 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1618
1619 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1620 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1621 vha->vp_idx, nack->u.isp24.status);
1622
63163e06
HM		 1623 /* Memory Barrier */
1624 wmb();
2d70c103
NB		 1625 qla2x00_start_iocbs(vha, vha->req);
1626}
1627
1628/*
1629 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1630 */
1631static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1632 struct abts_recv_from_24xx *abts, uint32_t status,
1633 bool ids_reversed)
1634{
1635 struct qla_hw_data *ha = vha->hw;
1636 struct abts_resp_to_24xx *resp;
1637 uint32_t f_ctl;
1638 uint8_t *p;
1639
1640 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1641 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1642 ha, abts, status);
1643
1644 /* Send marker if required */
1645 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1646 return;
1647
b6a029e1 1648 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1649 if (!resp) {
1650 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1651 "qla_target(%d): %s failed: unable to allocate "
1652 "request packet", vha->vp_idx, __func__);
1653 return;
1654 }
1655
1656 resp->entry_type = ABTS_RESP_24XX;
1657 resp->entry_count = 1;
1658 resp->nport_handle = abts->nport_handle;
1659 resp->vp_index = vha->vp_idx;
1660 resp->sof_type = abts->sof_type;
1661 resp->exchange_address = abts->exchange_address;
1662 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1663 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1664 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1665 F_CTL_SEQ_INITIATIVE);
1666 p = (uint8_t *)&f_ctl;
1667 resp->fcp_hdr_le.f_ctl[0] = *p++;
1668 resp->fcp_hdr_le.f_ctl[1] = *p++;
1669 resp->fcp_hdr_le.f_ctl[2] = *p;
1670 if (ids_reversed) {
1671 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1672 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1673 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1674 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1675 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1676 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1677 } else {
1678 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1679 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1680 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1681 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1682 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1683 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1684 }
1685 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1686 if (status == FCP_TMF_CMPL) {
1687 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1688 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1689 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1690 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1691 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1692 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1693 } else {
1694 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1695 resp->payload.ba_rjt.reason_code =
1696 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1697 /* Other bytes are zero */
1698 }
1699
0e8cd71c 1700 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1701
63163e06
HM		 1702 /* Memory Barrier */
1703 wmb();
2d70c103
NB		 1704 qla2x00_start_iocbs(vha, vha->req);
1705}
1706
1707/*
1708 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1709 */
1710static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1711 struct abts_resp_from_24xx_fw *entry)
1712{
1713 struct ctio7_to_24xx *ctio;
1714
1715 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1716 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1717 /* Send marker if required */
1718 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1719 return;
1720
b6a029e1 1721 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1722 if (ctio == NULL) {
1723 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1724 "qla_target(%d): %s failed: unable to allocate "
1725 "request packet\n", vha->vp_idx, __func__);
1726 return;
1727 }
1728
1729 /*
1730 * We've got on entrance firmware's response on by us generated
1731 * ABTS response. So, in it ID fields are reversed.
1732 */
1733
1734 ctio->entry_type = CTIO_TYPE7;
1735 ctio->entry_count = 1;
1736 ctio->nport_handle = entry->nport_handle;
1737 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1738 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1739 ctio->vp_index = vha->vp_idx;
1740 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1741 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1742 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1743 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1744 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1745 CTIO7_FLAGS_TERMINATE);
33a5fcee 1746 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1747
63163e06
HM		 1748 /* Memory Barrier */
1749 wmb();
2d70c103
NB		 1750 qla2x00_start_iocbs(vha, vha->req);
1751
1752 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1753 FCP_TMF_CMPL, true);
1754}
1755
8b2f5ff3
SN		 1756static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1757{
1758 struct qla_tgt_sess_op *op;
1759 struct qla_tgt_cmd *cmd;
8b631d87 1760 unsigned long flags;
8b2f5ff3 1761
8b631d87 1762 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1763 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1764 if (tag == op->atio.u.isp24.exchange_addr) {
1765 op->aborted = true;
8b631d87 1766 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1767 return 1;
1768 }
1769 }
1770
41dc529a
QT		 1771 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1772 if (tag == op->atio.u.isp24.exchange_addr) {
1773 op->aborted = true;
8b631d87 1774 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1775 return 1;
1776 }
1777 }
1778
8b2f5ff3
SN		 1779 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1780 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1781 cmd->aborted = 1;
8b631d87 1782 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1783 return 1;
1784 }
1785 }
8b631d87 1786 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1787
8b2f5ff3
SN		 1788 return 0;
1789}
1790
1791/* drop cmds for the given lun
1792 * XXX only looks for cmds on the port through which lun reset was recieved
1793 * XXX does not go through the list of other port (which may have cmds
1794 * for the same lun)
1795 */
1796static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1797 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1798{
1799 struct qla_tgt_sess_op *op;
1800 struct qla_tgt_cmd *cmd;
1801 uint32_t key;
8b631d87 1802 unsigned long flags;
8b2f5ff3
SN		 1803
1804 key = sid_to_key(s_id);
8b631d87 1805 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1806 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1807 uint32_t op_key;
f775bd14 1808 u64 op_lun;
8b2f5ff3
SN		 1809
1810 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1811 op_lun = scsilun_to_int(
1812 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1813 if (op_key == key && op_lun == lun)
1814 op->aborted = true;
1815 }
41dc529a
QT		 1816
1817 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1818 uint32_t op_key;
1819 u64 op_lun;
1820
1821 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1822 op_lun = scsilun_to_int(
1823 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1824 if (op_key == key && op_lun == lun)
1825 op->aborted = true;
1826 }
1827
8b2f5ff3
SN		 1828 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1829 uint32_t cmd_key;
f775bd14 1830 u64 cmd_lun;
8b2f5ff3
SN		 1831
1832 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1833 cmd_lun = scsilun_to_int(
1834 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1835 if (cmd_key == key && cmd_lun == lun)
193b50b9 1836 cmd->aborted = 1;
8b2f5ff3 1837 }
8b631d87 1838 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1839}
1840
2d70c103
NB		 1841/* ha->hardware_lock supposed to be held on entry */
1842static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1843 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1844{
1845 struct qla_hw_data *ha = vha->hw;
06e97b48 1846 struct se_session *se_sess = sess->se_sess;
2d70c103 1847 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 1848 struct qla_tgt_cmd *cmd;
06e97b48 1849 struct se_cmd *se_cmd;
2d70c103 1850 int rc;
06e97b48 1851 bool found_lun = false;
5d964837 1852 unsigned long flags;
06e97b48 1853
5d964837 1854 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
06e97b48 1855 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
649ee054 1856 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1857 found_lun = true;
1858 break;
1859 }
1860 }
5d964837 1861 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
06e97b48 1862
8b2f5ff3
SN		 1863 /* cmd not in LIO lists, look in qla list */
1864 if (!found_lun) {
1865 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1866 /* send TASK_ABORT response immediately */
1867 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1868 return 0;
1869 } else {
1870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1871 "unable to find cmd in driver or LIO for tag 0x%x\n",
1872 abts->exchange_addr_to_abort);
1873 return -ENOENT;
1874 }
1875 }
2d70c103
NB		 1876
1877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1878 "qla_target(%d): task abort (tag=%d)\n",
1879 vha->vp_idx, abts->exchange_addr_to_abort);
1880
1881 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1882 if (mcmd == NULL) {
1883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1884 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1885 vha->vp_idx, __func__);
1886 return -ENOMEM;
1887 }
1888 memset(mcmd, 0, sizeof(*mcmd));
1889
f775bd14 1890 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
2d70c103
NB		 1891 mcmd->sess = sess;
1892 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1893 mcmd->reset_count = vha->hw->chip_reset;
be92fc3f 1894 mcmd->tmr_func = QLA_TGT_ABTS;
2d70c103 1895
f775bd14 1896 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, cmd->unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 1897 abts->exchange_addr_to_abort);
1898 if (rc != 0) {
1899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1900 "qla_target(%d): tgt_ops->handle_tmr()"
1901 " failed: %d", vha->vp_idx, rc);
1902 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1903 return -EFAULT;
1904 }
1905
1906 return 0;
1907}
1908
1909/*
1910 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1911 */
1912static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1913 struct abts_recv_from_24xx *abts)
1914{
1915 struct qla_hw_data *ha = vha->hw;
5d964837 1916 struct fc_port *sess;
2d70c103
NB		 1917 uint32_t tag = abts->exchange_addr_to_abort;
1918 uint8_t s_id[3];
1919 int rc;
7560151b 1920 unsigned long flags;
2d70c103
NB		 1921
1922 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1924 "qla_target(%d): ABTS: Abort Sequence not "
1925 "supported\n", vha->vp_idx);
1926 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1927 return;
1928 }
1929
1930 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1931 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1932 "qla_target(%d): ABTS: Unknown Exchange "
1933 "Address received\n", vha->vp_idx);
1934 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1935 return;
1936 }
1937
1938 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1939 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1940 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1941 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1942 le32_to_cpu(abts->fcp_hdr_le.parameter));
1943
1944 s_id[0] = abts->fcp_hdr_le.s_id[2];
1945 s_id[1] = abts->fcp_hdr_le.s_id[1];
1946 s_id[2] = abts->fcp_hdr_le.s_id[0];
1947
7560151b 1948 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1949 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1950 if (!sess) {
1951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1952 "qla_target(%d): task abort for non-existant session\n",
1953 vha->vp_idx);
0e8cd71c 1954 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1955 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1956
1957 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1958
2d70c103
NB		 1959 if (rc != 0) {
1960 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1961 false);
1962 }
1963 return;
1964 }
7560151b
QT		 1965 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1966
2d70c103 1967
726b8548 1968 if (sess->deleted) {
e52a8b45
AP		 1969 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1970 return;
1971 }
1972
2d70c103
NB		 1973 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1974 if (rc != 0) {
1975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1976 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1977 vha->vp_idx, rc);
1978 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1979 return;
1980 }
1981}
1982
1983/*
1984 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1985 */
1986static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1987 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1988{
1989 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1990 struct ctio7_to_24xx *ctio;
33a5fcee 1991 uint16_t temp;
2d70c103
NB		 1992
1993 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1994 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1995 ha, atio, resp_code);
1996
1997 /* Send marker if required */
1998 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1999 return;
2000
2001 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
2002 if (ctio == NULL) {
2003 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2004 "qla_target(%d): %s failed: unable to allocate "
2005 "request packet\n", ha->vp_idx, __func__);
2006 return;
2007 }
2008
2009 ctio->entry_type = CTIO_TYPE7;
2010 ctio->entry_count = 1;
2011 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2012 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2013 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2014 ctio->vp_index = ha->vp_idx;
2015 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2016 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2017 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2018 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2019 temp = (atio->u.isp24.attr << 9)|
2020 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2021 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2022 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2023 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2024 ctio->u.status1.scsi_status =
ad950360
BVA		 2025 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2026 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2027 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2028
63163e06
HM		 2029 /* Memory Barrier */
2030 wmb();
2d70c103
NB		 2031 qla2x00_start_iocbs(ha, ha->req);
2032}
2033
2034void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2035{
2036 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2037}
2038EXPORT_SYMBOL(qlt_free_mcmd);
2039
be25152c
QT		 2040/*
2041 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2042 * reacquire
2043 */
2044void qlt_send_resp_ctio(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
2045 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2046{
2047 struct atio_from_isp *atio = &cmd->atio;
2048 struct ctio7_to_24xx *ctio;
2049 uint16_t temp;
2050
2051 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2052 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2053 "sense_key=%02x, asc=%02x, ascq=%02x",
2054 vha, atio, scsi_status, sense_key, asc, ascq);
2055
2056 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2057 if (!ctio) {
2058 ql_dbg(ql_dbg_async, vha, 0x3067,
2059 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2060 vha->host_no, __func__);
2061 goto out;
2062 }
2063
2064 ctio->entry_type = CTIO_TYPE7;
2065 ctio->entry_count = 1;
2066 ctio->handle = QLA_TGT_SKIP_HANDLE;
2067 ctio->nport_handle = cmd->sess->loop_id;
2068 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2069 ctio->vp_index = vha->vp_idx;
2070 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2071 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2072 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2073 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2074 temp = (atio->u.isp24.attr << 9) |
2075 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2076 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2077 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2078 ctio->u.status1.ox_id = cpu_to_le16(temp);
2079 ctio->u.status1.scsi_status =
2080 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2081 ctio->u.status1.response_len = cpu_to_le16(18);
2082 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2083
2084 if (ctio->u.status1.residual != 0)
2085 ctio->u.status1.scsi_status |=
2086 cpu_to_le16(SS_RESIDUAL_UNDER);
2087
2088 /* Response code and sense key */
2089 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2090 (&ctio->u.status1.sense_data)[0]);
2091 /* Additional sense length */
2092 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2093 /* ASC and ASCQ */
2094 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2095 (&ctio->u.status1.sense_data)[3]);
2096
2097 /* Memory Barrier */
2098 wmb();
2099
2100 qla2x00_start_iocbs(vha, vha->req);
2101out:
2102 return;
2103}
2104
2d70c103
NB		 2105/* callback from target fabric module code */
2106void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2107{
2108 struct scsi_qla_host *vha = mcmd->sess->vha;
2109 struct qla_hw_data *ha = vha->hw;
2110 unsigned long flags;
2111
2112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2113 "TM response mcmd (%p) status %#x state %#x",
2114 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2115
2116 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1 2117
3bb67df5 2118 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
b6a029e1 2119 /*
3bb67df5 2120 * Either the port is not online or this request was from
b6a029e1
AE		 2121 * previous life, just abort the processing.
2122 */
2123 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2124 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2125 vha->flags.online, qla2x00_reset_active(vha),
2126 mcmd->reset_count, ha->chip_reset);
b6a029e1
AE		 2127 ha->tgt.tgt_ops->free_mcmd(mcmd);
2128 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2129 return;
2130 }
2131
726b8548
QT		 2132 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2133 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2134 ELS_LOGO ||
2135 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2136 ELS_PRLO ||
2137 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2138 ELS_TPRLO) {
83548fe2 2139 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2140 "TM response logo %phC status %#x state %#x",
2141 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2142 mcmd->flags);
2143 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2144 } else {
2145 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
2146 0, 0, 0, 0, 0, 0);
2147 }
2148 } else {
d7236ac3 2149 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2d70c103
NB		 2150 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
2151 mcmd->fc_tm_rsp, false);
2152 else
2153 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
2154 mcmd->fc_tm_rsp);
2155 }
2156 /*
2157 * Make the callback for ->free_mcmd() to queue_work() and invoke
2158 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2159 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2160 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2161 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2162 * qlt_xmit_tm_rsp() returns here..
2163 */
2164 ha->tgt.tgt_ops->free_mcmd(mcmd);
2165 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2166}
2167EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2168
2169/* No locks */
2170static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2171{
2172 struct qla_tgt_cmd *cmd = prm->cmd;
2173
2174 BUG_ON(cmd->sg_cnt == 0);
2175
2176 prm->sg = (struct scatterlist *)cmd->sg;
2177 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
2178 cmd->sg_cnt, cmd->dma_data_direction);
2179 if (unlikely(prm->seg_cnt == 0))
2180 goto out_err;
2181
2182 prm->cmd->sg_mapped = 1;
2183
f83adb61
QT		 2184 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2185 /*
2186 * If greater than four sg entries then we need to allocate
2187 * the continuation entries
2188 */
2189 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
2190 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2191 prm->tgt->datasegs_per_cmd,
2192 prm->tgt->datasegs_per_cont);
2193 } else {
2194 /* DIF */
2195 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2196 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2197 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2198 prm->tot_dsds = prm->seg_cnt;
2199 } else
2200 prm->tot_dsds = prm->seg_cnt;
2201
2202 if (cmd->prot_sg_cnt) {
2203 prm->prot_sg = cmd->prot_sg;
2204 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
2205 cmd->prot_sg, cmd->prot_sg_cnt,
2206 cmd->dma_data_direction);
2207 if (unlikely(prm->prot_seg_cnt == 0))
2208 goto out_err;
2209
2210 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2211 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2212 /* Dif Bundling not support here */
2213 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2214 cmd->blk_sz);
2215 prm->tot_dsds += prm->prot_seg_cnt;
2216 } else
2217 prm->tot_dsds += prm->prot_seg_cnt;
2218 }
2219 }
2d70c103 2220
2d70c103
NB		 2221 return 0;
2222
2223out_err:
2224 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
2225 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2226 0, prm->cmd->sg_cnt);
2227 return -1;
2228}
2229
f9b6721a 2230static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103
NB		 2231{
2232 struct qla_hw_data *ha = vha->hw;
2233
f9b6721a
JE		 2234 if (!cmd->sg_mapped)
2235 return;
2236
2d70c103
NB		 2237 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2238 cmd->sg_mapped = 0;
f83adb61
QT		 2239
2240 if (cmd->prot_sg_cnt)
2241 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2242 cmd->dma_data_direction);
2243
d5ff0eed
JC		 2244 if (!cmd->ctx)
2245 return;
2246
f83adb61 2247 if (cmd->ctx_dsd_alloced)
d5ff0eed 2248 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2249
d5ff0eed 2250 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2251}
2252
2253static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
2254 uint32_t req_cnt)
2255{
d29fb736 2256 uint32_t cnt, cnt_in;
2d70c103
NB		 2257
2258 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 2259 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 2260 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 2261
2d70c103
NB		 2262 if (vha->req->ring_index < cnt)
2263 vha->req->cnt = cnt - vha->req->ring_index;
2264 else
2265 vha->req->cnt = vha->req->length -
2266 (vha->req->ring_index - cnt);
2d70c103 2267
bc7095a9
AB		 2268 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
2269 ql_dbg(ql_dbg_io, vha, 0x305a,
2270 "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",
2271 vha->vp_idx, vha->req->ring_index,
2272 vha->req->cnt, req_cnt, cnt, cnt_in,
2273 vha->req->length);
2274 return -EAGAIN;
2275 }
2d70c103 2276 }
bc7095a9 2277
2d70c103
NB		 2278 vha->req->cnt -= req_cnt;
2279
2280 return 0;
2281}
2282
2283/*
2284 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2285 */
2286static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
2287{
2288 /* Adjust ring index. */
2289 vha->req->ring_index++;
2290 if (vha->req->ring_index == vha->req->length) {
2291 vha->req->ring_index = 0;
2292 vha->req->ring_ptr = vha->req->ring;
2293 } else {
2294 vha->req->ring_ptr++;
2295 }
2296 return (cont_entry_t *)vha->req->ring_ptr;
2297}
2298
2299/* ha->hardware_lock supposed to be held on entry */
2300static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
2301{
2302 struct qla_hw_data *ha = vha->hw;
2303 uint32_t h;
2304
2305 h = ha->tgt.current_handle;
2306 /* always increment cmd handle */
2307 do {
2308 ++h;
8d93f550 2309 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 2310 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
2311 if (h == ha->tgt.current_handle) {
667024a3 2312 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 2313 "qla_target(%d): Ran out of "
2314 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
2315 h = QLA_TGT_NULL_HANDLE;
2316 break;
2317 }
2318 } while ((h == QLA_TGT_NULL_HANDLE) ||
2319 (h == QLA_TGT_SKIP_HANDLE) ||
2320 (ha->tgt.cmds[h-1] != NULL));
2321
2322 if (h != QLA_TGT_NULL_HANDLE)
2323 ha->tgt.current_handle = h;
2324
2325 return h;
2326}
2327
2328/* ha->hardware_lock supposed to be held on entry */
2329static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
2330 struct scsi_qla_host *vha)
2331{
2332 uint32_t h;
2333 struct ctio7_to_24xx *pkt;
2334 struct qla_hw_data *ha = vha->hw;
2335 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2336 uint16_t temp;
2d70c103
NB		 2337
2338 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
2339 prm->pkt = pkt;
2340 memset(pkt, 0, sizeof(*pkt));
2341
2342 pkt->entry_type = CTIO_TYPE7;
2343 pkt->entry_count = (uint8_t)prm->req_cnt;
2344 pkt->vp_index = vha->vp_idx;
2345
2346 h = qlt_make_handle(vha);
2347 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2348 /*
2349 * CTIO type 7 from the firmware doesn't provide a way to
2350 * know the initiator's LOOP ID, hence we can't find
2351 * the session and, so, the command.
2352 */
2353 return -EAGAIN;
2354 } else
be25152c 2355 ha->tgt.cmds[h - 1] = prm->cmd;
2d70c103
NB		 2356
2357 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2358 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2359 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2360 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2361 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2362 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2363 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2364 temp = atio->u.isp24.attr << 9;
2365 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2366 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2367 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2368 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2369
2d70c103
NB		 2370 return 0;
2371}
2372
2373/*
2374 * ha->hardware_lock supposed to be held on entry. We have already made sure
2375 * that there is sufficient amount of request entries to not drop it.
2376 */
2377static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
2378 struct scsi_qla_host *vha)
2379{
2380 int cnt;
2381 uint32_t *dword_ptr;
2382 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2383
2384 /* Build continuation packets */
2385 while (prm->seg_cnt > 0) {
2386 cont_a64_entry_t *cont_pkt64 =
2387 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
2388
2389 /*
2390 * Make sure that from cont_pkt64 none of
2391 * 64-bit specific fields used for 32-bit
2392 * addressing. Cast to (cont_entry_t *) for
2393 * that.
2394 */
2395
2396 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2397
2398 cont_pkt64->entry_count = 1;
2399 cont_pkt64->sys_define = 0;
2400
2401 if (enable_64bit_addressing) {
2402 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2403 dword_ptr =
2404 (uint32_t *)&cont_pkt64->dseg_0_address;
2405 } else {
2406 cont_pkt64->entry_type = CONTINUE_TYPE;
2407 dword_ptr =
2408 (uint32_t *)&((cont_entry_t *)
2409 cont_pkt64)->dseg_0_address;
2410 }
2411
2412 /* Load continuation entry data segments */
2413 for (cnt = 0;
2414 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2415 cnt++, prm->seg_cnt--) {
2416 *dword_ptr++ =
2417 cpu_to_le32(pci_dma_lo32
2418 (sg_dma_address(prm->sg)));
2419 if (enable_64bit_addressing) {
2420 *dword_ptr++ =
2421 cpu_to_le32(pci_dma_hi32
2422 (sg_dma_address
2423 (prm->sg)));
2424 }
2425 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2426
2d70c103
NB		 2427 prm->sg = sg_next(prm->sg);
2428 }
2429 }
2430}
2431
2432/*
2433 * ha->hardware_lock supposed to be held on entry. We have already made sure
2434 * that there is sufficient amount of request entries to not drop it.
2435 */
2436static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2437 struct scsi_qla_host *vha)
2438{
2439 int cnt;
2440 uint32_t *dword_ptr;
2441 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2442 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2443
2d70c103
NB		 2444 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2445
2446 /* Setup packet address segment pointer */
2447 dword_ptr = pkt24->u.status0.dseg_0_address;
2448
2449 /* Set total data segment count */
2450 if (prm->seg_cnt)
2451 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2452
2453 if (prm->seg_cnt == 0) {
2454 /* No data transfer */
2455 *dword_ptr++ = 0;
2456 *dword_ptr = 0;
2457 return;
2458 }
2459
2460 /* If scatter gather */
2d70c103
NB		 2461
2462 /* Load command entry data segments */
2463 for (cnt = 0;
2464 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2465 cnt++, prm->seg_cnt--) {
2466 *dword_ptr++ =
2467 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2468 if (enable_64bit_addressing) {
2469 *dword_ptr++ =
2470 cpu_to_le32(pci_dma_hi32(
2471 sg_dma_address(prm->sg)));
2472 }
2473 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2474
2d70c103
NB		 2475 prm->sg = sg_next(prm->sg);
2476 }
2477
2478 qlt_load_cont_data_segments(prm, vha);
2479}
2480
2481static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2482{
2483 return cmd->bufflen > 0;
2484}
2485
be25152c
QT		 2486static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2487{
2488 struct qla_tgt_cmd *cmd;
2489 struct scsi_qla_host *vha;
2490
2491 /* asc 0x10=dif error */
2492 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2493 cmd = prm->cmd;
2494 vha = cmd->vha;
2495 /* ASCQ */
2496 switch (prm->sense_buffer[13]) {
2497 case 1:
83548fe2 2498 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2499 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2500 "se_cmd=%p tag[%x]",
2501 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2502 cmd->atio.u.isp24.exchange_addr);
2503 break;
2504 case 2:
83548fe2 2505 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2506 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2507 "se_cmd=%p tag[%x]",
2508 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2509 cmd->atio.u.isp24.exchange_addr);
2510 break;
2511 case 3:
83548fe2 2512 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2513 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2514 "se_cmd=%p tag[%x]",
2515 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2516 cmd->atio.u.isp24.exchange_addr);
2517 break;
2518 default:
83548fe2 2519 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2520 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2521 "se_cmd=%p tag[%x]",
2522 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2523 cmd->atio.u.isp24.exchange_addr);
2524 break;
2525 }
83548fe2 2526 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2527 }
2528}
2529
2d70c103
NB		 2530/*
2531 * Called without ha->hardware_lock held
2532 */
2533static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2534 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2535 uint32_t *full_req_cnt)
2536{
2537 struct qla_tgt *tgt = cmd->tgt;
2538 struct scsi_qla_host *vha = tgt->vha;
2539 struct qla_hw_data *ha = vha->hw;
2540 struct se_cmd *se_cmd = &cmd->se_cmd;
2541
2d70c103
NB		 2542 prm->cmd = cmd;
2543 prm->tgt = tgt;
2544 prm->rq_result = scsi_status;
2545 prm->sense_buffer = &cmd->sense_buffer[0];
2546 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2547 prm->sg = NULL;
2548 prm->seg_cnt = -1;
2549 prm->req_cnt = 1;
2550 prm->add_status_pkt = 0;
2551
2d70c103
NB		 2552 /* Send marker if required */
2553 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2554 return -EFAULT;
2555
2d70c103
NB		 2556 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2557 if (qlt_pci_map_calc_cnt(prm) != 0)
2558 return -EAGAIN;
2559 }
2560
2561 *full_req_cnt = prm->req_cnt;
2562
2563 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2564 prm->residual = se_cmd->residual_count;
667024a3 2565 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
649ee054
BVA		 2566 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2567 prm->residual, se_cmd->tag,
2568 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2569 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2570 prm->rq_result |= SS_RESIDUAL_UNDER;
2571 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2572 prm->residual = se_cmd->residual_count;
667024a3 2573 ql_dbg(ql_dbg_io, vha, 0x305d,
649ee054
BVA		 2574 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2575 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2576 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2577 prm->rq_result |= SS_RESIDUAL_OVER;
2578 }
2579
2580 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2581 /*
2582 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2583 * ignored in *xmit_response() below
2584 */
2585 if (qlt_has_data(cmd)) {
2586 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2587 (IS_FWI2_CAPABLE(ha) &&
2588 (prm->rq_result != 0))) {
2589 prm->add_status_pkt = 1;
2590 (*full_req_cnt)++;
2591 }
2592 }
2593 }
2594
2d70c103
NB		 2595 return 0;
2596}
2597
2598static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2599 struct qla_tgt_cmd *cmd, int sending_sense)
2600{
2601 if (ha->tgt.enable_class_2)
2602 return 0;
2603
2604 if (sending_sense)
2605 return cmd->conf_compl_supported;
2606 else
2607 return ha->tgt.enable_explicit_conf &&
2608 cmd->conf_compl_supported;
2609}
2610
2d70c103
NB		 2611static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2612 struct qla_tgt_prm *prm)
2613{
2614 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2615 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2616 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2d70c103 2617 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ad950360 2618 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2619 CTIO7_FLAGS_EXPLICIT_CONFORM |
2620 CTIO7_FLAGS_CONFORM_REQ);
2621 }
2622 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2623 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2624 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2625 int i;
2626
2627 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
df2e32c5 2628 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2d70c103
NB		 2629 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2630 "Skipping EXPLICIT_CONFORM and "
2631 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2632 "non GOOD status\n");
2633 goto skip_explict_conf;
2634 }
ad950360 2635 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2636 CTIO7_FLAGS_EXPLICIT_CONFORM |
2637 CTIO7_FLAGS_CONFORM_REQ);
2638 }
2639skip_explict_conf:
2640 ctio->u.status1.flags &=
ad950360 2641 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2642 ctio->u.status1.flags |=
ad950360 2643 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2644 ctio->u.status1.scsi_status |=
ad950360 2645 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2646 ctio->u.status1.sense_length =
2647 cpu_to_le16(prm->sense_buffer_len);
2648 for (i = 0; i < prm->sense_buffer_len/4; i++)
2649 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2650 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2651
2652 qlt_print_dif_err(prm);
2653
2d70c103
NB		 2654 } else {
2655 ctio->u.status1.flags &=
ad950360 2656 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2657 ctio->u.status1.flags |=
ad950360 2658 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2659 ctio->u.status1.sense_length = 0;
2660 memset(ctio->u.status1.sense_data, 0,
2661 sizeof(ctio->u.status1.sense_data));
2662 }
2663
2664 /* Sense with len > 24, is it possible ??? */
2665}
2666
f83adb61
QT		 2667static inline int
2668qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2669{
f83adb61
QT		 2670 switch (se_cmd->prot_op) {
2671 case TARGET_PROT_DOUT_INSERT:
2672 case TARGET_PROT_DIN_STRIP:
2673 if (ql2xenablehba_err_chk >= 1)
2674 return 1;
2675 break;
2676 case TARGET_PROT_DOUT_PASS:
2677 case TARGET_PROT_DIN_PASS:
2678 if (ql2xenablehba_err_chk >= 2)
2679 return 1;
2680 break;
2681 case TARGET_PROT_DIN_INSERT:
2682 case TARGET_PROT_DOUT_STRIP:
2683 return 1;
2684 default:
2685 break;
2686 }
2687 return 0;
2688}
2689
be25152c
QT		 2690static inline int
2691qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2692{
2693 switch (se_cmd->prot_op) {
2694 case TARGET_PROT_DIN_INSERT:
2695 case TARGET_PROT_DOUT_INSERT:
2696 case TARGET_PROT_DIN_STRIP:
2697 case TARGET_PROT_DOUT_STRIP:
2698 case TARGET_PROT_DIN_PASS:
2699 case TARGET_PROT_DOUT_PASS:
2700 return 1;
2701 default:
2702 return 0;
2703 }
2704 return 0;
2705}
2706
f83adb61 2707/*
be25152c 2708 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2709 */
be25152c
QT		 2710static void
2711qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2712 uint16_t *pfw_prot_opts)
f83adb61 2713{
be25152c 2714 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2715 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2716 scsi_qla_host_t *vha = cmd->tgt->vha;
2717 struct qla_hw_data *ha = vha->hw;
2718 uint32_t t32 = 0;
f83adb61 2719
be25152c
QT		 2720 /*
2721 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2722 * have been immplemented by TCM, before AppTag is avail.
2723 * Look for modesense_handlers[]
2724 */
c7ee3bd4 2725 ctx->app_tag = 0;
f83adb61
QT		 2726 ctx->app_tag_mask[0] = 0x0;
2727 ctx->app_tag_mask[1] = 0x0;
2728
be25152c
QT		 2729 if (IS_PI_UNINIT_CAPABLE(ha)) {
2730 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2731 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2732 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2733 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2734 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2735 }
2736
2737 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2738
f83adb61
QT		 2739 switch (se_cmd->prot_type) {
2740 case TARGET_DIF_TYPE0_PROT:
2741 /*
be25152c
QT		 2742 * No check for ql2xenablehba_err_chk, as it
2743 * would be an I/O error if hba tag generation
2744 * is not done.
f83adb61
QT		 2745 */
2746 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2747 /* enable ALL bytes of the ref tag */
2748 ctx->ref_tag_mask[0] = 0xff;
2749 ctx->ref_tag_mask[1] = 0xff;
2750 ctx->ref_tag_mask[2] = 0xff;
2751 ctx->ref_tag_mask[3] = 0xff;
2752 break;
f83adb61 2753 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2754 /*
2755 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2756 * REF tag, and 16 bit app tag.
2757 */
2758 ctx->ref_tag = cpu_to_le32(lba);
2759 if (!qla_tgt_ref_mask_check(se_cmd) ||
2760 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2761 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2762 break;
2763 }
2764 /* enable ALL bytes of the ref tag */
2765 ctx->ref_tag_mask[0] = 0xff;
2766 ctx->ref_tag_mask[1] = 0xff;
2767 ctx->ref_tag_mask[2] = 0xff;
2768 ctx->ref_tag_mask[3] = 0xff;
2769 break;
f83adb61 2770 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2771 /*
2772 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2773 * tag has to match LBA in CDB + N
2774 */
2775 ctx->ref_tag = cpu_to_le32(lba);
2776 if (!qla_tgt_ref_mask_check(se_cmd) ||
2777 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2778 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2779 break;
2780 }
2781 /* enable ALL bytes of the ref tag */
2782 ctx->ref_tag_mask[0] = 0xff;
2783 ctx->ref_tag_mask[1] = 0xff;
2784 ctx->ref_tag_mask[2] = 0xff;
2785 ctx->ref_tag_mask[3] = 0xff;
2786 break;
f83adb61 2787 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2788 /* For TYPE 3 protection: 16 bit GUARD only */
2789 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2790 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2791 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2792 break;
f83adb61
QT		 2793 }
2794}
2795
f83adb61
QT		 2796static inline int
2797qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2798{
2799 uint32_t *cur_dsd;
f83adb61
QT		 2800 uint32_t transfer_length = 0;
2801 uint32_t data_bytes;
2802 uint32_t dif_bytes;
2803 uint8_t bundling = 1;
2804 uint8_t *clr_ptr;
2805 struct crc_context *crc_ctx_pkt = NULL;
2806 struct qla_hw_data *ha;
2807 struct ctio_crc2_to_fw *pkt;
2808 dma_addr_t crc_ctx_dma;
2809 uint16_t fw_prot_opts = 0;
2810 struct qla_tgt_cmd *cmd = prm->cmd;
2811 struct se_cmd *se_cmd = &cmd->se_cmd;
2812 uint32_t h;
2813 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2814 struct qla_tc_param tc;
c7ee3bd4 2815 uint16_t t16;
f83adb61 2816
f83adb61
QT		 2817 ha = vha->hw;
2818
2819 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2820 prm->pkt = pkt;
2821 memset(pkt, 0, sizeof(*pkt));
2822
2823 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2824 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2825 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2826 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2827
2828 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2829 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2830 bundling = 0;
2831
2832 /* Compute dif len and adjust data len to incude protection */
2833 data_bytes = cmd->bufflen;
2834 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2835
2836 switch (se_cmd->prot_op) {
2837 case TARGET_PROT_DIN_INSERT:
2838 case TARGET_PROT_DOUT_STRIP:
2839 transfer_length = data_bytes;
be25152c
QT		 2840 if (cmd->prot_sg_cnt)
2841 data_bytes += dif_bytes;
f83adb61 2842 break;
f83adb61
QT		 2843 case TARGET_PROT_DIN_STRIP:
2844 case TARGET_PROT_DOUT_INSERT:
2845 case TARGET_PROT_DIN_PASS:
2846 case TARGET_PROT_DOUT_PASS:
2847 transfer_length = data_bytes + dif_bytes;
2848 break;
f83adb61
QT		 2849 default:
2850 BUG();
2851 break;
2852 }
2853
2854 if (!qlt_hba_err_chk_enabled(se_cmd))
2855 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2856 /* HBA error checking enabled */
2857 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2858 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2859 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2860 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2861 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2862 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2863 }
2864
2865 switch (se_cmd->prot_op) {
2866 case TARGET_PROT_DIN_INSERT:
2867 case TARGET_PROT_DOUT_INSERT:
2868 fw_prot_opts |= PO_MODE_DIF_INSERT;
2869 break;
2870 case TARGET_PROT_DIN_STRIP:
2871 case TARGET_PROT_DOUT_STRIP:
2872 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2873 break;
2874 case TARGET_PROT_DIN_PASS:
2875 case TARGET_PROT_DOUT_PASS:
2876 fw_prot_opts |= PO_MODE_DIF_PASS;
2877 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2878 break;
2879 default:/* Normal Request */
2880 fw_prot_opts |= PO_MODE_DIF_PASS;
2881 break;
2882 }
2883
f83adb61
QT		 2884 /* ---- PKT ---- */
2885 /* Update entry type to indicate Command Type CRC_2 IOCB */
2886 pkt->entry_type = CTIO_CRC2;
2887 pkt->entry_count = 1;
2888 pkt->vp_index = vha->vp_idx;
2889
2890 h = qlt_make_handle(vha);
2891 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2892 /*
2893 * CTIO type 7 from the firmware doesn't provide a way to
2894 * know the initiator's LOOP ID, hence we can't find
2895 * the session and, so, the command.
2896 */
2897 return -EAGAIN;
2898 } else
2899 ha->tgt.cmds[h-1] = prm->cmd;
2900
f83adb61 2901 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
be25152c 2902 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2903 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2904 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2905 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2906 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2907 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2908
2909 /* silence compile warning */
2910 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2911 pkt->ox_id = cpu_to_le16(t16);
2912
2913 t16 = (atio->u.isp24.attr << 9);
2914 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2915 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2916
2917 /* Set transfer direction */
2918 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2919 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2920 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2921 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2922
f83adb61
QT		 2923 pkt->dseg_count = prm->tot_dsds;
2924 /* Fibre channel byte count */
2925 pkt->transfer_length = cpu_to_le32(transfer_length);
2926
f83adb61
QT		 2927 /* ----- CRC context -------- */
2928
2929 /* Allocate CRC context from global pool */
2930 crc_ctx_pkt = cmd->ctx =
2931 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2932
2933 if (!crc_ctx_pkt)
2934 goto crc_queuing_error;
2935
2936 /* Zero out CTX area. */
2937 clr_ptr = (uint8_t *)crc_ctx_pkt;
2938 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2939
2940 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2941 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2942
2943 /* Set handle */
2944 crc_ctx_pkt->handle = pkt->handle;
2945
be25152c 2946 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 2947
2948 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2949 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2950 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2951
f83adb61
QT		 2952 if (!bundling) {
2953 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2954 } else {
2955 /*
2956 * Configure Bundling if we need to fetch interlaving
2957 * protection PCI accesses
2958 */
2959 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2960 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2961 crc_ctx_pkt->u.bundling.dseg_count =
2962 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2963 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2964 }
2965
2966 /* Finish the common fields of CRC pkt */
2967 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2968 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2969 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 2970 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 2971
be25152c
QT		 2972 memset((uint8_t *)&tc, 0 , sizeof(tc));
2973 tc.vha = vha;
2974 tc.blk_sz = cmd->blk_sz;
2975 tc.bufflen = cmd->bufflen;
2976 tc.sg = cmd->sg;
2977 tc.prot_sg = cmd->prot_sg;
2978 tc.ctx = crc_ctx_pkt;
2979 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 2980
2981 /* Walks data segments */
ad950360 2982 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 2983
2984 if (!bundling && prm->prot_seg_cnt) {
2985 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 2986 prm->tot_dsds, &tc))
f83adb61
QT		 2987 goto crc_queuing_error;
2988 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 2989 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 2990 goto crc_queuing_error;
2991
2992 if (bundling && prm->prot_seg_cnt) {
2993 /* Walks dif segments */
c7ee3bd4 2994 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2995
2996 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2997 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 2998 prm->prot_seg_cnt, &tc))
f83adb61
QT		 2999 goto crc_queuing_error;
3000 }
3001 return QLA_SUCCESS;
3002
3003crc_queuing_error:
3004 /* Cleanup will be performed by the caller */
be25152c 3005 vha->hw->tgt.cmds[h - 1] = NULL;
f83adb61
QT		 3006
3007 return QLA_FUNCTION_FAILED;
3008}
3009
2d70c103
NB		 3010/*
3011 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3012 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3013 */
3014int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3015 uint8_t scsi_status)
3016{
3017 struct scsi_qla_host *vha = cmd->vha;
3018 struct qla_hw_data *ha = vha->hw;
3019 struct ctio7_to_24xx *pkt;
3020 struct qla_tgt_prm prm;
3021 uint32_t full_req_cnt = 0;
3022 unsigned long flags = 0;
3023 int res;
3024
a6ca8878 3025 spin_lock_irqsave(&ha->hardware_lock, flags);
726b8548 3026 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3027 cmd->state = QLA_TGT_STATE_PROCESSED;
3028 if (cmd->sess->logout_completed)
3029 /* no need to terminate. FW already freed exchange. */
3030 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3031 else
a07100e0 3032 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
a6ca8878
AP		 3033 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3034 return 0;
3035 }
3036 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3037
2d70c103 3038 memset(&prm, 0, sizeof(prm));
2d70c103
NB		 3039
3040 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 3041 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
3042 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3043 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3044 &cmd->se_cmd);
2d70c103
NB		 3045
3046 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3047 &full_req_cnt);
3048 if (unlikely(res != 0)) {
2d70c103
NB		 3049 return res;
3050 }
3051
3052 spin_lock_irqsave(&ha->hardware_lock, flags);
3053
ce1025cd
HM		 3054 if (xmit_type == QLA_TGT_XMIT_STATUS)
3055 vha->tgt_counters.core_qla_snd_status++;
3056 else
3057 vha->tgt_counters.core_qla_que_buf++;
3058
ec7193e2 3059 if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) {
b6a029e1 3060 /*
3bb67df5 3061 * Either the port is not online or this request was from
b6a029e1
AE		 3062 * previous life, just abort the processing.
3063 */
3064 cmd->state = QLA_TGT_STATE_PROCESSED;
3065 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3066 ql_dbg(ql_dbg_async, vha, 0xe101,
3bb67df5
DKU		 3067 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3068 vha->flags.online, qla2x00_reset_active(vha),
3069 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 3070 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3071 return 0;
3072 }
3073
2d70c103
NB		 3074 /* Does F/W have an IOCBs for this request */
3075 res = qlt_check_reserve_free_req(vha, full_req_cnt);
3076 if (unlikely(res))
3077 goto out_unmap_unlock;
3078
f83adb61
QT		 3079 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3080 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3081 else
3082 res = qlt_24xx_build_ctio_pkt(&prm, vha);
810e30bc
QT		 3083 if (unlikely(res != 0)) {
3084 vha->req->cnt += full_req_cnt;
2d70c103 3085 goto out_unmap_unlock;
810e30bc 3086 }
2d70c103
NB		 3087
3088 pkt = (struct ctio7_to_24xx *)prm.pkt;
3089
3090 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3091 pkt->u.status0.flags |=
ad950360 3092 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3093 CTIO7_FLAGS_STATUS_MODE_0);
3094
f83adb61
QT		 3095 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3096 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 3097
3098 if (prm.add_status_pkt == 0) {
3099 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3100 pkt->u.status0.scsi_status =
3101 cpu_to_le16(prm.rq_result);
3102 pkt->u.status0.residual =
3103 cpu_to_le32(prm.residual);
ad950360 3104 pkt->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 3105 CTIO7_FLAGS_SEND_STATUS);
3106 if (qlt_need_explicit_conf(ha, cmd, 0)) {
3107 pkt->u.status0.flags |=
ad950360 3108 cpu_to_le16(
2d70c103
NB		 3109 CTIO7_FLAGS_EXPLICIT_CONFORM |
3110 CTIO7_FLAGS_CONFORM_REQ);
3111 }
3112 }
3113
3114 } else {
3115 /*
3116 * We have already made sure that there is sufficient
3117 * amount of request entries to not drop HW lock in
3118 * req_pkt().
3119 */
3120 struct ctio7_to_24xx *ctio =
3121 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
3122
667024a3
AE		 3123 ql_dbg(ql_dbg_io, vha, 0x305e,
3124 "Building additional status packet 0x%p.\n",
3125 ctio);
2d70c103 3126
f83adb61
QT		 3127 /*
3128 * T10Dif: ctio_crc2_to_fw overlay ontop of
3129 * ctio7_to_24xx
3130 */
2d70c103 3131 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3132 /* reset back to CTIO7 */
2d70c103 3133 ctio->entry_count = 1;
f83adb61 3134 ctio->entry_type = CTIO_TYPE7;
2d70c103 3135 ctio->dseg_count = 0;
ad950360 3136 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3137 CTIO7_FLAGS_DATA_IN);
3138
3139 /* Real finish is ctio_m1's finish */
3140 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3141 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3142 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3143
3144 /* qlt_24xx_init_ctio_to_isp will correct
3145 * all neccessary fields that's part of CTIO7.
3146 * There should be no residual of CTIO-CRC2 data.
3147 */
2d70c103
NB		 3148 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3149 &prm);
3150 pr_debug("Status CTIO7: %p\n", ctio);
3151 }
3152 } else
3153 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3154
3155
3156 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3157 cmd->cmd_sent_to_fw = 1;
2d70c103 3158
63163e06
HM		 3159 /* Memory Barrier */
3160 wmb();
2d70c103
NB		 3161 qla2x00_start_iocbs(vha, vha->req);
3162 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3163
3164 return 0;
3165
3166out_unmap_unlock:
f9b6721a 3167 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3168 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3169
3170 return res;
3171}
3172EXPORT_SYMBOL(qlt_xmit_response);
3173
3174int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3175{
3176 struct ctio7_to_24xx *pkt;
3177 struct scsi_qla_host *vha = cmd->vha;
3178 struct qla_hw_data *ha = vha->hw;
3179 struct qla_tgt *tgt = cmd->tgt;
3180 struct qla_tgt_prm prm;
3181 unsigned long flags;
3182 int res = 0;
3183
3184 memset(&prm, 0, sizeof(prm));
3185 prm.cmd = cmd;
3186 prm.tgt = tgt;
3187 prm.sg = NULL;
3188 prm.req_cnt = 1;
3189
3190 /* Send marker if required */
3191 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
3192 return -EIO;
3193
2d70c103
NB		 3194 /* Calculate number of entries and segments required */
3195 if (qlt_pci_map_calc_cnt(&prm) != 0)
3196 return -EAGAIN;
3197
3198 spin_lock_irqsave(&ha->hardware_lock, flags);
3199
ec7193e2 3200 if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
726b8548 3201 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3202 /*
3bb67df5 3203 * Either the port is not online or this request was from
b6a029e1
AE		 3204 * previous life, just abort the processing.
3205 */
3206 cmd->state = QLA_TGT_STATE_NEED_DATA;
3207 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3208 ql_dbg(ql_dbg_async, vha, 0xe102,
3bb67df5
DKU		 3209 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3210 vha->flags.online, qla2x00_reset_active(vha),
3211 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 3212 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3213 return 0;
3214 }
3215
2d70c103
NB		 3216 /* Does F/W have an IOCBs for this request */
3217 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
3218 if (res != 0)
3219 goto out_unlock_free_unmap;
f83adb61
QT		 3220 if (cmd->se_cmd.prot_op)
3221 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3222 else
3223 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 3224
810e30bc
QT		 3225 if (unlikely(res != 0)) {
3226 vha->req->cnt += prm.req_cnt;
2d70c103 3227 goto out_unlock_free_unmap;
810e30bc
QT		 3228 }
3229
2d70c103 3230 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3231 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3232 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3233
3234 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3235 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 3236
3237 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3238 cmd->cmd_sent_to_fw = 1;
2d70c103 3239
63163e06
HM		 3240 /* Memory Barrier */
3241 wmb();
2d70c103
NB		 3242 qla2x00_start_iocbs(vha, vha->req);
3243 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3244
3245 return res;
3246
3247out_unlock_free_unmap:
f9b6721a 3248 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3249 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3250
3251 return res;
3252}
3253EXPORT_SYMBOL(qlt_rdy_to_xfer);
3254
f83adb61
QT		 3255
3256/*
be25152c 3257 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3258 */
be25152c 3259static void
f83adb61 3260qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
be25152c 3261 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3262{
3263 uint8_t *ap = &sts->actual_dif[0];
3264 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3265 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3266 uint8_t scsi_status, sense_key, asc, ascq;
3267 unsigned long flags;
f83adb61 3268
be25152c 3269 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3270
be25152c
QT		 3271 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3272 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3273 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3274
be25152c
QT		 3275 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3276 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3277 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3278
be25152c
QT		 3279 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3280 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3281
be25152c 3282 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3283
be25152c
QT		 3284 /* check appl tag */
3285 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3286 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3287 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
3288 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3289 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3290 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3291 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3292
3293 cmd->dif_err_code = DIF_ERR_APP;
3294 scsi_status = SAM_STAT_CHECK_CONDITION;
3295 sense_key = ABORTED_COMMAND;
3296 asc = 0x10;
3297 ascq = 0x2;
f83adb61
QT		 3298 }
3299
3300 /* check ref tag */
be25152c 3301 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3302 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3303 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ",
3304 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3305 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3306 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3307 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3308
3309 cmd->dif_err_code = DIF_ERR_REF;
3310 scsi_status = SAM_STAT_CHECK_CONDITION;
3311 sense_key = ABORTED_COMMAND;
3312 asc = 0x10;
3313 ascq = 0x3;
f83adb61
QT		 3314 goto out;
3315 }
3316
be25152c
QT		 3317 /* check guard */
3318 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3319 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3320 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]",
3321 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3322 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3323 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3324 cmd->atio.u.isp24.fcp_hdr.ox_id);
3325
be25152c
QT		 3326 cmd->dif_err_code = DIF_ERR_GRD;
3327 scsi_status = SAM_STAT_CHECK_CONDITION;
3328 sense_key = ABORTED_COMMAND;
3329 asc = 0x10;
3330 ascq = 0x1;
f83adb61
QT		 3331 }
3332out:
be25152c
QT		 3333 switch (cmd->state) {
3334 case QLA_TGT_STATE_NEED_DATA:
3335 /* handle_data will load DIF error code */
3336 cmd->state = QLA_TGT_STATE_DATA_IN;
3337 vha->hw->tgt.tgt_ops->handle_data(cmd);
3338 break;
3339 default:
3340 spin_lock_irqsave(&cmd->cmd_lock, flags);
3341 if (cmd->aborted) {
3342 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3343 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3344 break;
3345 }
3346 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3347
be25152c
QT		 3348 qlt_send_resp_ctio(vha, cmd, scsi_status, sense_key, asc, ascq);
3349 /* assume scsi status gets out on the wire.
3350 * Will not wait for completion.
3351 */
3352 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3353 break;
3354 }
3355}
f83adb61 3356
a6ca8878
AP		 3357/* If hardware_lock held on entry, might drop it, then reaquire */
3358/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3359static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3360 struct imm_ntfy_from_isp *ntfy)
3361{
3362 struct nack_to_isp *nack;
3363 struct qla_hw_data *ha = vha->hw;
3364 request_t *pkt;
3365 int ret = 0;
3366
3367 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3368 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3369
ec7193e2 3370 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3371 if (pkt == NULL) {
3372 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3373 "qla_target(%d): %s failed: unable to allocate "
3374 "request packet\n", vha->vp_idx, __func__);
3375 return -ENOMEM;
3376 }
3377
3378 pkt->entry_type = NOTIFY_ACK_TYPE;
3379 pkt->entry_count = 1;
4f060736 3380 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3381
3382 nack = (struct nack_to_isp *)pkt;
3383 nack->ox_id = ntfy->ox_id;
3384
3385 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3386 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3387 nack->u.isp24.flags = ntfy->u.isp24.flags &
3388 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3389 }
3390
3391 /* terminate */
3392 nack->u.isp24.flags |=
3393 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3394
3395 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3396 nack->u.isp24.status = ntfy->u.isp24.status;
3397 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3398 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3399 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3400 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3401 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3402 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3403
3404 qla2x00_start_iocbs(vha, vha->req);
3405 return ret;
3406}
3407
3408static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3409 struct imm_ntfy_from_isp *imm, int ha_locked)
3410{
3411 unsigned long flags = 0;
3412 int rc;
3413
3414 if (qlt_issue_marker(vha, ha_locked) < 0)
3415 return;
3416
3417 if (ha_locked) {
3418 rc = __qlt_send_term_imm_notif(vha, imm);
3419
3420#if 0 /* Todo */
3421 if (rc == -ENOMEM)
3422 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3423#else
3424 if (rc) {
3425 }
a6ca8878
AP		 3426#endif
3427 goto done;
3428 }
3429
3430 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3431 rc = __qlt_send_term_imm_notif(vha, imm);
3432
3433#if 0 /* Todo */
3434 if (rc == -ENOMEM)
3435 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3436#endif
3437
3438done:
3439 if (!ha_locked)
3440 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3441}
3442
83548fe2
QT		 3443/*
3444 * If hardware_lock held on entry, might drop it, then reaquire
3445 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3446 */
2d70c103
NB		 3447static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3448 struct qla_tgt_cmd *cmd,
3449 struct atio_from_isp *atio)
3450{
3451 struct ctio7_to_24xx *ctio24;
3452 struct qla_hw_data *ha = vha->hw;
3453 request_t *pkt;
3454 int ret = 0;
33a5fcee 3455 uint16_t temp;
2d70c103 3456
83548fe2 3457 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3458
b6a029e1 3459 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 3460 if (pkt == NULL) {
3461 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3462 "qla_target(%d): %s failed: unable to allocate "
3463 "request packet\n", vha->vp_idx, __func__);
3464 return -ENOMEM;
3465 }
3466
3467 if (cmd != NULL) {
3468 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3469 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3470 "qla_target(%d): Terminating cmd %p with "
3471 "incorrect state %d\n", vha->vp_idx, cmd,
3472 cmd->state);
3473 } else
3474 ret = 1;
3475 }
3476
ce1025cd 3477 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3478 pkt->entry_count = 1;
3479 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3480
3481 ctio24 = (struct ctio7_to_24xx *)pkt;
3482 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3483 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3484 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3485 ctio24->vp_index = vha->vp_idx;
3486 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3487 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3488 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3489 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3490 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3491 CTIO7_FLAGS_TERMINATE;
3492 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3493 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3494 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3495
3496 /* Most likely, it isn't needed */
3497 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3498 &atio->u.isp24.fcp_cmnd.add_cdb[
3499 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3500 if (ctio24->u.status1.residual != 0)
3501 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3502
63163e06
HM		 3503 /* Memory Barrier */
3504 wmb();
2d70c103
NB		 3505 qla2x00_start_iocbs(vha, vha->req);
3506 return ret;
3507}
3508
3509static void qlt_send_term_exchange(struct scsi_qla_host *vha,
a07100e0
QT		 3510 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3511 int ul_abort)
2d70c103 3512{
6bc85dd5 3513 unsigned long flags = 0;
2d70c103
NB		 3514 int rc;
3515
3516 if (qlt_issue_marker(vha, ha_locked) < 0)
3517 return;
3518
3519 if (ha_locked) {
3520 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3521 if (rc == -ENOMEM)
3522 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3523 goto done;
3524 }
3525 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3526 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3527 if (rc == -ENOMEM)
3528 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3529
2d70c103 3530done:
a07100e0 3531 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3532 if (cmd->sg_mapped)
3533 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3534 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3535 }
6bc85dd5
HM		 3536
3537 if (!ha_locked)
3538 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3539
7b898542 3540 return;
2d70c103
NB		 3541}
3542
33e79977
QT		 3543static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3544{
3545 struct list_head free_list;
3546 struct qla_tgt_cmd *cmd, *tcmd;
3547
3548 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3549 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3550
3551 cmd = tcmd = NULL;
3552 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3553 INIT_LIST_HEAD(&free_list);
3554 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3555
3556 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3557 list_del(&cmd->cmd_list);
3558 /* This cmd was never sent to TCM. There is no need
3559 * to schedule free or call free_cmd
3560 */
3561 qlt_free_cmd(cmd);
3562 vha->hw->tgt.num_qfull_cmds_alloc--;
3563 }
3564 }
3565 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3566}
3567
3568static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3569{
3570 uint32_t total_leaked;
3571
3572 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3573
3574 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3575 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3576
3577 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3578 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3579 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3580
3581 if (IS_P3P_TYPE(vha->hw))
3582 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3583 else
3584 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3585 qla2xxx_wake_dpc(vha);
3586 }
3587
3588}
3589
a07100e0 3590int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3591{
3592 struct qla_tgt *tgt = cmd->tgt;
3593 struct scsi_qla_host *vha = tgt->vha;
3594 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3595 unsigned long flags;
7359df25
AP		 3596
3597 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3598 "qla_target(%d): terminating exchange for aborted cmd=%p "
3599 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3600 se_cmd->tag);
3601
a07100e0
QT		 3602 spin_lock_irqsave(&cmd->cmd_lock, flags);
3603 if (cmd->aborted) {
3604 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3605 /*
3606 * It's normal to see 2 calls in this path:
3607 * 1) XFER Rdy completion + CMD_T_ABORT
3608 * 2) TCM TMR - drain_state_list
3609 */
83548fe2
QT		 3610 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3611 "multiple abort. %p transport_state %x, t_state %x, "
3612 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3613 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3614 return EIO;
3615 }
193b50b9 3616 cmd->aborted = 1;
1eb42f96 3617 cmd->trc_flags |= TRC_ABORT;
a07100e0 3618 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3619
a07100e0
QT		 3620 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
3621 return 0;
7359df25
AP		 3622}
3623EXPORT_SYMBOL(qlt_abort_cmd);
3624
2d70c103
NB		 3625void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3626{
5d964837 3627 struct fc_port *sess = cmd->sess;
51a07f84 3628
f83adb61
QT		 3629 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3630 "%s: se_cmd[%p] ox_id %04x\n",
3631 __func__, &cmd->se_cmd,
3632 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3633
e07f8f65
SK		 3634 BUG_ON(cmd->cmd_in_wq);
3635
a07100e0
QT		 3636 if (cmd->sg_mapped)
3637 qlt_unmap_sg(cmd->vha, cmd);
3638
33e79977
QT		 3639 if (!cmd->q_full)
3640 qlt_decr_num_pend_cmds(cmd->vha);
3641
f83adb61 3642 BUG_ON(cmd->sg_mapped);
e07f8f65 3643 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3644 if (unlikely(cmd->free_sg))
3645 kfree(cmd->sg);
51a07f84
NB		 3646
3647 if (!sess || !sess->se_sess) {
3648 WARN_ON(1);
3649 return;
3650 }
e07f8f65 3651 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3652 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3653}
3654EXPORT_SYMBOL(qlt_free_cmd);
3655
2d70c103
NB		 3656/*
3657 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3658 */
3659static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3660 struct qla_tgt_cmd *cmd, uint32_t status)
3661{
3662 int term = 0;
3663
be25152c 3664 if (cmd->se_cmd.prot_op)
83548fe2 3665 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3666 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3667 "se_cmd=%p tag[%x] op %#x/%s",
3668 cmd->lba, cmd->lba,
3669 cmd->num_blks, &cmd->se_cmd,
3670 cmd->atio.u.isp24.exchange_addr,
3671 cmd->se_cmd.prot_op,
3672 prot_op_str(cmd->se_cmd.prot_op));
3673
2d70c103
NB		 3674 if (ctio != NULL) {
3675 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3676 term = !(c->flags &
ad950360 3677 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3678 } else
3679 term = 1;
3680
3681 if (term)
a07100e0 3682 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3683
3684 return term;
3685}
3686
3687/* ha->hardware_lock supposed to be held on entry */
3688static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3689 uint32_t handle)
3690{
3691 struct qla_hw_data *ha = vha->hw;
3692
3693 handle--;
3694 if (ha->tgt.cmds[handle] != NULL) {
3695 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3696 ha->tgt.cmds[handle] = NULL;
3697 return cmd;
3698 } else
3699 return NULL;
3700}
3701
3702/* ha->hardware_lock supposed to be held on entry */
3703static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3704 uint32_t handle, void *ctio)
3705{
3706 struct qla_tgt_cmd *cmd = NULL;
3707
3708 /* Clear out internal marks */
3709 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3710 CTIO_INTERMEDIATE_HANDLE_MARK);
3711
3712 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 3713 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 3714 return NULL;
667024a3 3715
2d70c103 3716 /* handle-1 is actually used */
8d93f550 3717 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 3718 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3719 "qla_target(%d): Wrong handle %x received\n",
3720 vha->vp_idx, handle);
3721 return NULL;
3722 }
3723 cmd = qlt_get_cmd(vha, handle);
3724 if (unlikely(cmd == NULL)) {
3725 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3726 "qla_target(%d): Suspicious: unable to "
3727 "find the command with handle %x\n", vha->vp_idx,
3728 handle);
3729 return NULL;
3730 }
3731 } else if (ctio != NULL) {
3732 /* We can't get loop ID from CTIO7 */
3733 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3734 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3735 "support NULL handles\n", vha->vp_idx);
3736 return NULL;
3737 }
3738
3739 return cmd;
3740}
3741
c0cb4496
AE		 3742/* hardware_lock should be held by caller. */
3743static void
3744qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3745{
3746 struct qla_hw_data *ha = vha->hw;
3747 uint32_t handle;
3748
3749 if (cmd->sg_mapped)
3750 qlt_unmap_sg(vha, cmd);
3751
3752 handle = qlt_make_handle(vha);
3753
3754 /* TODO: fix debug message type and ids. */
3755 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3756 ql_dbg(ql_dbg_io, vha, 0xff00,
3757 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3758 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3759 cmd->write_data_transferred = 0;
3760 cmd->state = QLA_TGT_STATE_DATA_IN;
3761
3762 ql_dbg(ql_dbg_io, vha, 0xff01,
3763 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3764
3765 ha->tgt.tgt_ops->handle_data(cmd);
3766 return;
c0cb4496
AE		 3767 } else {
3768 ql_dbg(ql_dbg_io, vha, 0xff03,
3769 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3770 cmd->state);
3771 dump_stack();
3772 }
3773
1eb42f96 3774 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3775 ha->tgt.tgt_ops->free_cmd(cmd);
3776}
3777
3778void
3779qlt_host_reset_handler(struct qla_hw_data *ha)
3780{
3781 struct qla_tgt_cmd *cmd;
3782 unsigned long flags;
3783 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3784 scsi_qla_host_t *vha = NULL;
3785 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3786 uint32_t i;
3787
3788 if (!base_vha->hw->tgt.tgt_ops)
3789 return;
3790
3791 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3792 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3793 "Target mode disabled\n");
3794 return;
3795 }
3796
3797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3798 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3799 base_vha->dpc_flags);
3800
3801 spin_lock_irqsave(&ha->hardware_lock, flags);
3802 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3803 cmd = qlt_get_cmd(base_vha, i);
3804 if (!cmd)
3805 continue;
3806 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3807 vha = cmd->vha;
3808 qlt_abort_cmd_on_host_reset(vha, cmd);
3809 }
3810 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3811}
3812
3813
2d70c103
NB		 3814/*
3815 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3816 */
3817static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3818 uint32_t status, void *ctio)
3819{
3820 struct qla_hw_data *ha = vha->hw;
3821 struct se_cmd *se_cmd;
2d70c103
NB		 3822 struct qla_tgt_cmd *cmd;
3823
2d70c103
NB		 3824 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3825 /* That could happen only in case of an error/reset/abort */
3826 if (status != CTIO_SUCCESS) {
3827 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3828 "Intermediate CTIO received"
3829 " (status %x)\n", status);
3830 }
3831 return;
3832 }
3833
3834 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 3835 if (cmd == NULL)
2d70c103 3836 return;
092e1dc3 3837
2d70c103 3838 se_cmd = &cmd->se_cmd;
d564a372 3839 cmd->cmd_sent_to_fw = 0;
2d70c103 3840
f9b6721a 3841 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3842
3843 if (unlikely(status != CTIO_SUCCESS)) {
3844 switch (status & 0xFFFF) {
3845 case CTIO_LIP_RESET:
3846 case CTIO_TARGET_RESET:
3847 case CTIO_ABORTED:
7b898542 3848 /* driver request abort via Terminate exchange */
2d70c103
NB		 3849 case CTIO_TIMEOUT:
3850 case CTIO_INVALID_RX_ID:
3851 /* They are OK */
3852 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3853 "qla_target(%d): CTIO with "
3854 "status %#x received, state %x, se_cmd %p, "
3855 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3856 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3857 status, cmd->state, se_cmd);
3858 break;
3859
3860 case CTIO_PORT_LOGGED_OUT:
3861 case CTIO_PORT_UNAVAILABLE:
71cdc079 3862 {
dacb5822
HM		 3863 int logged_out =
3864 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3865
2d70c103 3866 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3867 "qla_target(%d): CTIO with %s status %x "
2d70c103 3868 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3869 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3870 status, cmd->state, se_cmd);
2d70c103 3871
71cdc079
AP		 3872 if (logged_out && cmd->sess) {
3873 /*
3874 * Session is already logged out, but we need
3875 * to notify initiator, who's not aware of this
3876 */
3877 cmd->sess->logout_on_delete = 0;
3878 cmd->sess->send_els_logo = 1;
83548fe2 3879 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3880 "%s %d %8phC post del sess\n",
3881 __func__, __LINE__, cmd->sess->port_name);
3882
3883 qlt_schedule_sess_for_deletion_lock(cmd->sess);
71cdc079
AP		 3884 }
3885 break;
3886 }
f83adb61
QT		 3887 case CTIO_DIF_ERROR: {
3888 struct ctio_crc_from_fw *crc =
3889 (struct ctio_crc_from_fw *)ctio;
3890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3891 "qla_target(%d): CTIO with DIF_ERROR status %x "
3892 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3893 "expect_dif[0x%llx]\n",
f83adb61
QT		 3894 vha->vp_idx, status, cmd->state, se_cmd,
3895 *((u64 *)&crc->actual_dif[0]),
3896 *((u64 *)&crc->expected_dif[0]));
3897
be25152c
QT		 3898 qlt_handle_dif_error(vha, cmd, ctio);
3899 return;
f83adb61 3900 }
2d70c103
NB		 3901 default:
3902 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3903 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3904 vha->vp_idx, status, cmd->state, se_cmd);
3905 break;
3906 }
3907
7b898542 3908
193b50b9 3909 /* "cmd->aborted" means
7b898542
QT		 3910 * cmd is already aborted/terminated, we don't
3911 * need to terminate again. The exchange is already
3912 * cleaned up/freed at FW level. Just cleanup at driver
3913 * level.
3914 */
3915 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3916 (!cmd->aborted)) {
1eb42f96 3917 cmd->trc_flags |= TRC_CTIO_ERR;
2d70c103
NB		 3918 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3919 return;
7b898542 3920 }
2d70c103
NB		 3921 }
3922
3923 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3924 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3925 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3926 cmd->state = QLA_TGT_STATE_DATA_IN;
3927
52c82823 3928 if (status == CTIO_SUCCESS)
2d70c103
NB		 3929 cmd->write_data_transferred = 1;
3930
2d70c103
NB		 3931 ha->tgt.tgt_ops->handle_data(cmd);
3932 return;
193b50b9 3933 } else if (cmd->aborted) {
1eb42f96 3934 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3936 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3937 } else {
1eb42f96 3938 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3940 "qla_target(%d): A command in state (%d) should "
3941 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3942 }
3943
7b898542 3944 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3945 !cmd->aborted) {
2d70c103
NB		 3946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3947 dump_stack();
3948 }
3949
3950 ha->tgt.tgt_ops->free_cmd(cmd);
3951}
3952
2d70c103
NB		 3953static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3954 uint8_t task_codes)
3955{
3956 int fcp_task_attr;
3957
3958 switch (task_codes) {
3959 case ATIO_SIMPLE_QUEUE:
68d81f40 3960 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3961 break;
3962 case ATIO_HEAD_OF_QUEUE:
68d81f40 3963 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3964 break;
3965 case ATIO_ORDERED_QUEUE:
68d81f40 3966 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3967 break;
3968 case ATIO_ACA_QUEUE:
68d81f40 3969 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3970 break;
3971 case ATIO_UNTAGGED:
68d81f40 3972 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3973 break;
3974 default:
3975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3976 "qla_target: unknown task code %x, use ORDERED instead\n",
3977 task_codes);
68d81f40 3978 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3979 break;
3980 }
3981
3982 return fcp_task_attr;
3983}
3984
5d964837 3985static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 3986 uint8_t *);
3987/*
3988 * Process context for I/O path into tcm_qla2xxx code
3989 */
51a07f84 3990static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3991{
2d70c103
NB		 3992 scsi_qla_host_t *vha = cmd->vha;
3993 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3994 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 3995 struct fc_port *sess = cmd->sess;
2d70c103
NB		 3996 struct atio_from_isp *atio = &cmd->atio;
3997 unsigned char *cdb;
3998 unsigned long flags;
3999 uint32_t data_length;
4000 int ret, fcp_task_attr, data_dir, bidi = 0;
4001
e07f8f65 4002 cmd->cmd_in_wq = 0;
1eb42f96 4003 cmd->trc_flags |= TRC_DO_WORK;
2d70c103
NB		 4004 if (tgt->tgt_stop)
4005 goto out_term;
4006
193b50b9 4007 if (cmd->aborted) {
8b2f5ff3
SN		 4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4009 "cmd with tag %u is aborted\n",
4010 cmd->atio.u.isp24.exchange_addr);
4011 goto out_term;
4012 }
4013
a07100e0 4014 spin_lock_init(&cmd->cmd_lock);
2d70c103 4015 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4016 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4017 cmd->unpacked_lun = scsilun_to_int(
4018 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4019
4020 if (atio->u.isp24.fcp_cmnd.rddata &&
4021 atio->u.isp24.fcp_cmnd.wrdata) {
4022 bidi = 1;
4023 data_dir = DMA_TO_DEVICE;
4024 } else if (atio->u.isp24.fcp_cmnd.rddata)
4025 data_dir = DMA_FROM_DEVICE;
4026 else if (atio->u.isp24.fcp_cmnd.wrdata)
4027 data_dir = DMA_TO_DEVICE;
4028 else
4029 data_dir = DMA_NONE;
4030
4031 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4032 atio->u.isp24.fcp_cmnd.task_attr);
4033 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4034 &atio->u.isp24.fcp_cmnd.add_cdb[
4035 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4036
51a07f84
NB		 4037 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4038 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4039 if (ret != 0)
4040 goto out_term;
4041 /*
4042 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4043 */
7560151b 4044 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4045 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4046 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4047 return;
4048
4049out_term:
667024a3 4050 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4051 /*
fae9eaf8
RD		 4052 * cmd has not sent to target yet, so pass NULL as the second
4053 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4054 */
1eb42f96 4055 cmd->trc_flags |= TRC_DO_WORK_ERR;
2d70c103 4056 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 4057 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4058
4059 qlt_decr_num_pend_cmds(vha);
51a07f84 4060 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
51a07f84 4061 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7560151b
QT		 4062
4063 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4064 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4065 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4066}
4067
4068static void qlt_do_work(struct work_struct *work)
4069{
4070 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4071 scsi_qla_host_t *vha = cmd->vha;
4072 unsigned long flags;
4073
4074 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4075 list_del(&cmd->cmd_list);
4076 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4077
4078 __qlt_do_work(cmd);
4079}
4080
4081static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4082 struct fc_port *sess,
51a07f84
NB		 4083 struct atio_from_isp *atio)
4084{
4085 struct se_session *se_sess = sess->se_sess;
4086 struct qla_tgt_cmd *cmd;
4087 int tag;
4088
4089 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4090 if (tag < 0)
4091 return NULL;
4092
4093 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4094 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4095
4096 memcpy(&cmd->atio, atio, sizeof(*atio));
4097 cmd->state = QLA_TGT_STATE_NEW;
4098 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4099 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4100 cmd->vha = vha;
4101 cmd->se_cmd.map_tag = tag;
4102 cmd->sess = sess;
4103 cmd->loop_id = sess->loop_id;
4104 cmd->conf_compl_supported = sess->conf_compl_supported;
4105
1eb42f96 4106 cmd->trc_flags = 0;
9fce1254
KS		 4107 cmd->jiffies_at_alloc = get_jiffies_64();
4108
4109 cmd->reset_count = vha->hw->chip_reset;
4110
51a07f84
NB		 4111 return cmd;
4112}
4113
4114static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
4115 uint16_t);
4116
4117static void qlt_create_sess_from_atio(struct work_struct *work)
4118{
4119 struct qla_tgt_sess_op *op = container_of(work,
4120 struct qla_tgt_sess_op, work);
4121 scsi_qla_host_t *vha = op->vha;
4122 struct qla_hw_data *ha = vha->hw;
5d964837 4123 struct fc_port *sess;
51a07f84
NB		 4124 struct qla_tgt_cmd *cmd;
4125 unsigned long flags;
4126 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4127
8b2f5ff3
SN		 4128 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4129 list_del(&op->cmd_list);
4130 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4131
4132 if (op->aborted) {
4133 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4134 "sess_op with tag %u is aborted\n",
4135 op->atio.u.isp24.exchange_addr);
4136 goto out_term;
4137 }
4138
51a07f84 4139 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 4140 "qla_target(%d): Unable to find wwn login"
4141 " (s_id %x:%x:%x), trying to create it manually\n",
4142 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 4143
4144 if (op->atio.u.raw.entry_count > 1) {
4145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 4146 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 4147 goto out_term;
4148 }
4149
51a07f84
NB		 4150 sess = qlt_make_local_sess(vha, s_id);
4151 /* sess has an extra creation ref. */
51a07f84
NB		 4152
4153 if (!sess)
4154 goto out_term;
4155 /*
4156 * Now obtain a pre-allocated session tag using the original op->atio
4157 * packet header, and dispatch into __qlt_do_work() using the existing
4158 * process context.
4159 */
4160 cmd = qlt_get_tag(vha, sess, &op->atio);
4161 if (!cmd) {
4162 spin_lock_irqsave(&ha->hardware_lock, flags);
4163 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
5d964837 4164 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 4165 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4166 kfree(op);
4167 return;
4168 }
726b8548 4169
51a07f84 4170 /*
e3dc0e31 4171 * __qlt_do_work() will call qlt_put_sess() to release
51a07f84
NB		 4172 * the extra reference taken above by qlt_make_local_sess()
4173 */
4174 __qlt_do_work(cmd);
4175 kfree(op);
4176 return;
51a07f84
NB		 4177out_term:
4178 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 4179 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
08234e3a 4180 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84 4181 kfree(op);
2d70c103
NB		 4182}
4183
4184/* ha->hardware_lock supposed to be held on entry */
4185static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4186 struct atio_from_isp *atio)
4187{
51a07f84 4188 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4189 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4190 struct fc_port *sess;
2d70c103 4191 struct qla_tgt_cmd *cmd;
5d964837 4192 unsigned long flags;
2d70c103
NB		 4193
4194 if (unlikely(tgt->tgt_stop)) {
667024a3 4195 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 4196 "New command while device %p is shutting down\n", tgt);
4197 return -EFAULT;
4198 }
4199
51a07f84
NB		 4200 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4201 if (unlikely(!sess)) {
4202 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4203 GFP_ATOMIC);
4204 if (!op)
4205 return -ENOMEM;
4206
4207 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 4208 op->vha = vha;
8b2f5ff3 4209
8b631d87 4210 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4211 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
8b631d87 4212 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4213
51a07f84
NB		 4214 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4215 queue_work(qla_tgt_wq, &op->work);
4216 return 0;
4217 }
e52a8b45
AP		 4218
4219 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4220 * session deletion, but it's still in sess_del_work wq */
726b8548 4221 if (sess->deleted) {
83548fe2 4222 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4223 "New command while old session %p is being deleted\n",
4224 sess);
4225 return -EFAULT;
4226 }
4227
51a07f84
NB		 4228 /*
4229 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4230 */
726b8548 4231 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4232 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4233 "%s: kref_get fail, %8phC oxid %x \n",
4234 __func__, sess->port_name,
4235 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4236 return -EFAULT;
4237 }
51a07f84
NB		 4238
4239 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4240 if (!cmd) {
667024a3 4241 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4242 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4243 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4244 ha->tgt.tgt_ops->put_sess(sess);
4245 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4246 return -ENOMEM;
4247 }
4248
e07f8f65 4249 cmd->cmd_in_wq = 1;
1eb42f96 4250 cmd->trc_flags |= TRC_NEW_CMD;
5327c7db
QT		 4251 cmd->se_cmd.cpuid = ha->msix_count ?
4252 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
8b2f5ff3 4253
726b8548 4254 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4255 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4256 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4257
2d70c103 4258 INIT_WORK(&cmd->work, qlt_do_work);
fb3269ba 4259 if (ha->msix_count) {
fb3269ba
QT		 4260 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4261 queue_work_on(smp_processor_id(), qla_tgt_wq,
4262 &cmd->work);
4263 else
4264 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4265 &cmd->work);
4266 } else {
4267 queue_work(qla_tgt_wq, &cmd->work);
4268 }
2d70c103
NB		 4269 return 0;
4270
4271}
4272
4273/* ha->hardware_lock supposed to be held on entry */
5d964837 4274static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4275 int fn, void *iocb, int flags)
4276{
4277 struct scsi_qla_host *vha = sess->vha;
4278 struct qla_hw_data *ha = vha->hw;
4279 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4280 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4281 int res;
2d70c103
NB		 4282
4283 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4284 if (!mcmd) {
4285 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4286 "qla_target(%d): Allocation of management "
4287 "command failed, some commands and their data could "
4288 "leak\n", vha->vp_idx);
4289 return -ENOMEM;
4290 }
4291 memset(mcmd, 0, sizeof(*mcmd));
4292 mcmd->sess = sess;
4293
4294 if (iocb) {
4295 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4296 sizeof(mcmd->orig_iocb.imm_ntfy));
4297 }
4298 mcmd->tmr_func = fn;
4299 mcmd->flags = flags;
b6a029e1 4300 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4301
4302 switch (fn) {
2d70c103 4303 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4304 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4305 break;
2d70c103
NB		 4306 }
4307
be92fc3f 4308 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4309 if (res != 0) {
4310 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4311 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4312 sess->vha->vp_idx, res);
4313 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4314 return -EFAULT;
4315 }
4316
4317 return 0;
4318}
4319
4320/* ha->hardware_lock supposed to be held on entry */
4321static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4322{
4323 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4324 struct qla_hw_data *ha = vha->hw;
4325 struct qla_tgt *tgt;
5d964837 4326 struct fc_port *sess;
f775bd14 4327 u64 unpacked_lun;
52c82823 4328 int fn;
7560151b 4329 unsigned long flags;
2d70c103 4330
0e8cd71c 4331 tgt = vha->vha_tgt.qla_tgt;
2d70c103 4332
2d70c103 4333 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4334
4335 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4336 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4337 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4338 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4339
f775bd14
QT		 4340 unpacked_lun =
4341 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 4342
4343 if (!sess) {
4344 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4345 "qla_target(%d): task mgmt fn 0x%x for "
4346 "non-existant session\n", vha->vp_idx, fn);
4347 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4348 sizeof(struct atio_from_isp));
4349 }
4350
726b8548 4351 if (sess->deleted)
e52a8b45
AP		 4352 return -EFAULT;
4353
2d70c103
NB		 4354 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4355}
4356
4357/* ha->hardware_lock supposed to be held on entry */
4358static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4359 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4360{
4361 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4362 struct qla_hw_data *ha = vha->hw;
4363 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4364 u64 unpacked_lun;
2d70c103
NB		 4365 int rc;
4366
4367 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4368 if (mcmd == NULL) {
4369 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4370 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4371 vha->vp_idx, __func__);
4372 return -ENOMEM;
4373 }
4374 memset(mcmd, 0, sizeof(*mcmd));
4375
4376 mcmd->sess = sess;
4377 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4378 sizeof(mcmd->orig_iocb.imm_ntfy));
4379
f775bd14
QT		 4380 unpacked_lun =
4381 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
80187f8e 4382 mcmd->reset_count = vha->hw->chip_reset;
be92fc3f 4383 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
2d70c103 4384
be92fc3f 4385 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4386 le16_to_cpu(iocb->u.isp2x.seq_id));
4387 if (rc != 0) {
4388 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4389 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4390 vha->vp_idx, rc);
4391 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4392 return -EFAULT;
4393 }
4394
4395 return 0;
4396}
4397
4398/* ha->hardware_lock supposed to be held on entry */
4399static int qlt_abort_task(struct scsi_qla_host *vha,
4400 struct imm_ntfy_from_isp *iocb)
4401{
4402 struct qla_hw_data *ha = vha->hw;
5d964837 4403 struct fc_port *sess;
2d70c103 4404 int loop_id;
7560151b 4405 unsigned long flags;
2d70c103
NB		 4406
4407 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4408
7560151b 4409 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4410 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4411 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4412
2d70c103
NB		 4413 if (sess == NULL) {
4414 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4415 "qla_target(%d): task abort for unexisting "
4416 "session\n", vha->vp_idx);
0e8cd71c 4417 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4418 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4419 }
4420
4421 return __qlt_abort_task(vha, iocb, sess);
4422}
4423
a6ca8878
AP		 4424void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4425{
726b8548
QT		 4426 if (rc != MBS_COMMAND_COMPLETE) {
4427 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4428 "%s: se_sess %p / sess %p from"
4429 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4430 " LOGO failed: %#x\n",
4431 __func__,
4432 fcport->se_sess,
4433 fcport,
4434 fcport->port_name, fcport->loop_id,
4435 fcport->d_id.b.domain, fcport->d_id.b.area,
4436 fcport->d_id.b.al_pa, rc);
4437 }
4438
4439 fcport->logout_completed = 1;
a6ca8878
AP		 4440}
4441
a6ca8878
AP		 4442/*
4443* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4444*
4445* Schedules sessions with matching port_id/loop_id but different wwn for
4446* deletion. Returns existing session with matching wwn if present.
4447* Null otherwise.
4448*/
726b8548
QT		 4449struct fc_port *
4450qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4451 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4452{
5d964837 4453 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4454 uint64_t other_wwn;
4455
b7bd104e
AP		 4456 *conflict_sess = NULL;
4457
5d964837 4458 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4459
4460 other_wwn = wwn_to_u64(other_sess->port_name);
4461
4462 if (wwn == other_wwn) {
4463 WARN_ON(sess);
4464 sess = other_sess;
4465 continue;
4466 }
4467
4468 /* find other sess with nport_id collision */
37cacc0a 4469 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4470 if (loop_id != other_sess->loop_id) {
726b8548 4471 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4472 "Invalidating sess %p loop_id %d wwn %llx.\n",
4473 other_sess, other_sess->loop_id, other_wwn);
4474
4475 /*
4476 * logout_on_delete is set by default, but another
4477 * session that has the same s_id/loop_id combo
4478 * might have cleared it when requested this session
4479 * deletion, so don't touch it
4480 */
4481 qlt_schedule_sess_for_deletion(other_sess, true);
4482 } else {
4483 /*
4484 * Another wwn used to have our s_id/loop_id
b7bd104e 4485 * kill the session, but don't free the loop_id
a6ca8878 4486 */
83548fe2 4487 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4488 "Invalidating sess %p loop_id %d wwn %llx.\n",
4489 other_sess, other_sess->loop_id, other_wwn);
4490
4491
b7bd104e
AP		 4492 other_sess->keep_nport_handle = 1;
4493 *conflict_sess = other_sess;
a6ca8878
AP		 4494 qlt_schedule_sess_for_deletion(other_sess,
4495 true);
4496 }
4497 continue;
4498 }
4499
4500 /* find other sess with nport handle collision */
726b8548
QT		 4501 if ((loop_id == other_sess->loop_id) &&
4502 (loop_id != FC_NO_LOOP_ID)) {
4503 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4504 "Invalidating sess %p loop_id %d wwn %llx.\n",
4505 other_sess, other_sess->loop_id, other_wwn);
4506
4507 /* Same loop_id but different s_id
4508 * Ok to kill and logout */
4509 qlt_schedule_sess_for_deletion(other_sess, true);
4510 }
4511 }
4512
4513 return sess;
4514}
4515
daddf5cf
AP		 4516/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4517static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4518{
4519 struct qla_tgt_sess_op *op;
4520 struct qla_tgt_cmd *cmd;
4521 uint32_t key;
4522 int count = 0;
8b631d87 4523 unsigned long flags;
daddf5cf
AP		 4524
4525 key = (((u32)s_id->b.domain << 16) |
4526 ((u32)s_id->b.area << 8) |
4527 ((u32)s_id->b.al_pa));
4528
8b631d87 4529 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4530 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4531 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4532
daddf5cf
AP		 4533 if (op_key == key) {
4534 op->aborted = true;
4535 count++;
4536 }
4537 }
41dc529a
QT		 4538
4539 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4540 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4541 if (op_key == key) {
4542 op->aborted = true;
4543 count++;
4544 }
4545 }
4546
daddf5cf
AP		 4547 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4548 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4549 if (cmd_key == key) {
193b50b9 4550 cmd->aborted = 1;
daddf5cf
AP		 4551 count++;
4552 }
4553 }
8b631d87 4554 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4555
4556 return count;
4557}
4558
2d70c103
NB		 4559/*
4560 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4561 */
4562static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4563 struct imm_ntfy_from_isp *iocb)
4564{
a6ca8878 4565 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4566 struct qla_hw_data *ha = vha->hw;
5d964837 4567 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4568 uint64_t wwn;
4569 port_id_t port_id;
4570 uint16_t loop_id;
4571 uint16_t wd3_lo;
2d70c103 4572 int res = 0;
5d964837 4573 struct qlt_plogi_ack_t *pla;
7560151b 4574 unsigned long flags;
2d70c103 4575
a6ca8878
AP		 4576 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4577
4578 port_id.b.domain = iocb->u.isp24.port_id[2];
4579 port_id.b.area = iocb->u.isp24.port_id[1];
4580 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4581 port_id.b.rsvd_1 = 0;
4582
4583 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4584
726b8548
QT		 4585 ql_dbg(ql_dbg_disc, vha, 0xf026,
4586 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4587 vha->vp_idx, iocb->u.isp24.port_id[2],
4588 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4589 iocb->u.isp24.status_subcode, loop_id,
4590 iocb->u.isp24.port_name);
2d70c103 4591
a6ca8878
AP		 4592 /* res = 1 means ack at the end of thread
4593 * res = 0 means ack async/later.
4594 */
2d70c103
NB		 4595 switch (iocb->u.isp24.status_subcode) {
4596 case ELS_PLOGI:
a6ca8878 4597
daddf5cf
AP		 4598 /* Mark all stale commands in qla_tgt_wq for deletion */
4599 abort_cmds_for_s_id(vha, &port_id);
4600
7560151b
QT		 4601 if (wwn) {
4602 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4603 sess = qlt_find_sess_invalidate_other(vha, wwn,
4604 port_id, loop_id, &conflict_sess);
7560151b
QT		 4605 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4606 }
a6ca8878 4607
726b8548 4608 if (IS_SW_RESV_ADDR(port_id)) {
a6ca8878
AP		 4609 res = 1;
4610 break;
4611 }
4612
b7bd104e
AP		 4613 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4614 if (!pla) {
a6ca8878 4615 qlt_send_term_imm_notif(vha, iocb, 1);
a6ca8878
AP		 4616 break;
4617 }
4618
4619 res = 0;
4620
726b8548
QT		 4621 if (conflict_sess) {
4622 conflict_sess->login_gen++;
b7bd104e 4623 qlt_plogi_ack_link(vha, pla, conflict_sess,
726b8548
QT		 4624 QLT_PLOGI_LINK_CONFLICT);
4625 }
a6ca8878 4626
726b8548
QT		 4627 if (!sess) {
4628 pla->ref_count++;
4629 qla24xx_post_newsess_work(vha, &port_id,
4630 iocb->u.isp24.port_name, pla);
4631 res = 0;
b7bd104e 4632 break;
726b8548 4633 }
b7bd104e
AP		 4634
4635 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
726b8548
QT		 4636 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4637 sess->d_id = port_id;
4638 sess->login_gen++;
4639
4640 switch (sess->disc_state) {
4641 case DSC_DELETED:
4642 qlt_plogi_ack_unref(vha, pla);
4643 break;
4644
4645 default:
4646 /*
4647 * Under normal circumstances we want to release nport handle
4648 * during LOGO process to avoid nport handle leaks inside FW.
4649 * The exception is when LOGO is done while another PLOGI with
4650 * the same nport handle is waiting as might be the case here.
4651 * Note: there is always a possibily of a race where session
4652 * deletion has already started for other reasons (e.g. ACL
4653 * removal) and now PLOGI arrives:
4654 * 1. if PLOGI arrived in FW after nport handle has been freed,
4655 * FW must have assigned this PLOGI a new/same handle and we
4656 * can proceed ACK'ing it as usual when session deletion
4657 * completes.
4658 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4659 * bit reached it, the handle has now been released. We'll
4660 * get an error when we ACK this PLOGI. Nothing will be sent
4661 * back to initiator. Initiator should eventually retry
4662 * PLOGI and situation will correct itself.
4663 */
4664 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4665 (sess->d_id.b24 == port_id.b24));
4666
83548fe2
QT		 4667 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4668 "%s %d %8phC post del sess\n",
4669 __func__, __LINE__, sess->port_name);
726b8548
QT		 4670
4671
4672 qlt_schedule_sess_for_deletion_lock(sess);
4673 break;
4674 }
4675
a6ca8878
AP		 4676 break;
4677
2d70c103 4678 case ELS_PRLI:
a6ca8878
AP		 4679 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4680
7560151b
QT		 4681 if (wwn) {
4682 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4683 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4684 loop_id, &conflict_sess);
7560151b
QT		 4685 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4686 }
b7bd104e
AP		 4687
4688 if (conflict_sess) {
4689 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4690 "PRLI with conflicting sess %p port %8phC\n",
4691 conflict_sess, conflict_sess->port_name);
4692 qlt_send_term_imm_notif(vha, iocb, 1);
4693 res = 0;
4694 break;
4695 }
a6ca8878
AP		 4696
4697 if (sess != NULL) {
ec7193e2
QT		 4698 if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
4699 sess->fw_login_state != DSC_LS_PLOGI_COMP) {
a6ca8878
AP		 4700 /*
4701 * Impatient initiator sent PRLI before last
4702 * PLOGI could finish. Will force him to re-try,
4703 * while last one finishes.
4704 */
df673274 4705 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4706 "sess %p PRLI received, before plogi ack.\n",
4707 sess);
4708 qlt_send_term_imm_notif(vha, iocb, 1);
4709 res = 0;
4710 break;
4711 }
4712
4713 /*
4714 * This shouldn't happen under normal circumstances,
4715 * since we have deleted the old session during PLOGI
4716 */
df673274 4717 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4718 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4719 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4720
4721 sess->local = 0;
4722 sess->loop_id = loop_id;
37cacc0a 4723 sess->d_id = port_id;
726b8548 4724 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4725
4726 if (wd3_lo & BIT_7)
4727 sess->conf_compl_supported = 1;
4728
726b8548
QT		 4729 if ((wd3_lo & BIT_4) == 0)
4730 sess->port_type = FCT_INITIATOR;
4731 else
4732 sess->port_type = FCT_TARGET;
df673274
AP		 4733 }
4734 res = 1; /* send notify ack */
4735
4736 /* Make session global (not used in fabric mode) */
4737 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4738 if (sess) {
83548fe2 4739 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4740 "%s %d %8phC post nack\n",
4741 __func__, __LINE__, sess->port_name);
4742 qla24xx_post_nack_work(vha, sess, iocb,
4743 SRB_NACK_PRLI);
4744 res = 0;
4745 } else {
4746 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4747 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4748 qla2xxx_wake_dpc(vha);
4749 }
a6ca8878 4750 } else {
726b8548 4751 if (sess) {
83548fe2 4752 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4753 "%s %d %8phC post nack\n",
4754 __func__, __LINE__, sess->port_name);
726b8548
QT		 4755 qla24xx_post_nack_work(vha, sess, iocb,
4756 SRB_NACK_PRLI);
4757 res = 0;
4758 }
4759 }
a6ca8878
AP		 4760 break;
4761
41dc529a
QT		 4762 case ELS_TPRLO:
4763 if (le16_to_cpu(iocb->u.isp24.flags) &
4764 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4765 loop_id = 0xFFFF;
4766 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4767 res = 1;
4768 break;
4769 }
4770 /* drop through */
2d70c103
NB		 4771 case ELS_LOGO:
4772 case ELS_PRLO:
726b8548
QT		 4773 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4774 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4775 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4776
4777 if (sess) {
4778 sess->login_gen++;
4779 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4780 sess->logo_ack_needed = 1;
4781 memcpy(sess->iocb, iocb, IOCB_SIZE);
4782 }
4783
2d70c103 4784 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4785
83548fe2 4786 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4787 "%s: logo %llx res %d sess %p ",
4788 __func__, wwn, res, sess);
4789 if (res == 0) {
41dc529a
QT		 4790 /*
4791 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4792 * for LOGO_ACK & sess delete
4793 */
726b8548
QT		 4794 BUG_ON(!sess);
4795 res = 0;
4796 } else {
41dc529a 4797 /* cmd did not go to upper layer. */
726b8548
QT		 4798 if (sess) {
4799 qlt_schedule_sess_for_deletion_lock(sess);
4800 res = 0;
4801 }
4802 /* else logo will be ack */
4803 }
2d70c103
NB		 4804 break;
4805 case ELS_PDISC:
4806 case ELS_ADISC:
4807 {
0e8cd71c 4808 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4809 if (tgt->link_reinit_iocb_pending) {
4810 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4811 0, 0, 0, 0, 0, 0);
4812 tgt->link_reinit_iocb_pending = 0;
4813 }
726b8548
QT		 4814
4815 sess = qla2x00_find_fcport_by_wwpn(vha,
4816 iocb->u.isp24.port_name, 1);
4817 if (sess) {
83548fe2 4818 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4819 "sess %p lid %d|%d DS %d LS %d\n",
4820 sess, sess->loop_id, loop_id,
4821 sess->disc_state, sess->fw_login_state);
4822 }
4823
2d70c103
NB		 4824 res = 1; /* send notify ack */
4825 break;
4826 }
4827
a6ca8878 4828 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4829 default:
4830 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4831 "qla_target(%d): Unsupported ELS command %x "
4832 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4833 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4834 break;
4835 }
4836
4837 return res;
4838}
4839
2d70c103
NB		 4840/*
4841 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4842 */
4843static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4844 struct imm_ntfy_from_isp *iocb)
4845{
4846 struct qla_hw_data *ha = vha->hw;
4847 uint32_t add_flags = 0;
4848 int send_notify_ack = 1;
4849 uint16_t status;
4850
4851 status = le16_to_cpu(iocb->u.isp2x.status);
4852 switch (status) {
4853 case IMM_NTFY_LIP_RESET:
4854 {
4855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4856 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4857 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4858 iocb->u.isp24.status_subcode);
4859
4860 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4861 send_notify_ack = 0;
4862 break;
4863 }
4864
4865 case IMM_NTFY_LIP_LINK_REINIT:
4866 {
0e8cd71c 4867 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4868 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4869 "qla_target(%d): LINK REINIT (loop %#x, "
4870 "subcode %x)\n", vha->vp_idx,
4871 le16_to_cpu(iocb->u.isp24.nport_handle),
4872 iocb->u.isp24.status_subcode);
4873 if (tgt->link_reinit_iocb_pending) {
4874 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4875 0, 0, 0, 0, 0, 0);
4876 }
4877 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4878 tgt->link_reinit_iocb_pending = 1;
4879 /*
4880 * QLogic requires to wait after LINK REINIT for possible
4881 * PDISC or ADISC ELS commands
4882 */
4883 send_notify_ack = 0;
4884 break;
4885 }
4886
4887 case IMM_NTFY_PORT_LOGOUT:
4888 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4889 "qla_target(%d): Port logout (loop "
4890 "%#x, subcode %x)\n", vha->vp_idx,
4891 le16_to_cpu(iocb->u.isp24.nport_handle),
4892 iocb->u.isp24.status_subcode);
4893
4894 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4895 send_notify_ack = 0;
4896 /* The sessions will be cleared in the callback, if needed */
4897 break;
4898
4899 case IMM_NTFY_GLBL_TPRLO:
4900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4901 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4902 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4903 send_notify_ack = 0;
4904 /* The sessions will be cleared in the callback, if needed */
4905 break;
4906
4907 case IMM_NTFY_PORT_CONFIG:
4908 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4909 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4910 status);
4911 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4912 send_notify_ack = 0;
4913 /* The sessions will be cleared in the callback, if needed */
4914 break;
4915
4916 case IMM_NTFY_GLBL_LOGO:
4917 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4918 "qla_target(%d): Link failure detected\n",
4919 vha->vp_idx);
4920 /* I_T nexus loss */
4921 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4922 send_notify_ack = 0;
4923 break;
4924
4925 case IMM_NTFY_IOCB_OVERFLOW:
4926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4927 "qla_target(%d): Cannot provide requested "
4928 "capability (IOCB overflowed the immediate notify "
4929 "resource count)\n", vha->vp_idx);
4930 break;
4931
4932 case IMM_NTFY_ABORT_TASK:
4933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4934 "qla_target(%d): Abort Task (S %08x I %#x -> "
4935 "L %#x)\n", vha->vp_idx,
4936 le16_to_cpu(iocb->u.isp2x.seq_id),
4937 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4938 le16_to_cpu(iocb->u.isp2x.lun));
4939 if (qlt_abort_task(vha, iocb) == 0)
4940 send_notify_ack = 0;
4941 break;
4942
4943 case IMM_NTFY_RESOURCE:
4944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4945 "qla_target(%d): Out of resources, host %ld\n",
4946 vha->vp_idx, vha->host_no);
4947 break;
4948
4949 case IMM_NTFY_MSG_RX:
4950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4951 "qla_target(%d): Immediate notify task %x\n",
4952 vha->vp_idx, iocb->u.isp2x.task_flags);
4953 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4954 send_notify_ack = 0;
4955 break;
4956
4957 case IMM_NTFY_ELS:
4958 if (qlt_24xx_handle_els(vha, iocb) == 0)
4959 send_notify_ack = 0;
4960 break;
2d70c103
NB		 4961 default:
4962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4963 "qla_target(%d): Received unknown immediate "
4964 "notify status %x\n", vha->vp_idx, status);
4965 break;
4966 }
4967
4968 if (send_notify_ack)
4969 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4970}
4971
4972/*
4973 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4974 * This function sends busy to ISP 2xxx or 24xx.
4975 */
33e79977 4976static int __qlt_send_busy(struct scsi_qla_host *vha,
2d70c103
NB		 4977 struct atio_from_isp *atio, uint16_t status)
4978{
4979 struct ctio7_to_24xx *ctio24;
4980 struct qla_hw_data *ha = vha->hw;
4981 request_t *pkt;
5d964837 4982 struct fc_port *sess = NULL;
7560151b 4983 unsigned long flags;
f7e761f5 4984 u16 temp;
2d70c103 4985
7560151b 4986 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4987 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4988 atio->u.isp24.fcp_hdr.s_id);
7560151b 4989 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 4990 if (!sess) {
a07100e0 4991 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
33e79977 4992 return 0;
2d70c103
NB		 4993 }
4994 /* Sending marker isn't necessary, since we called from ISR */
4995
4996 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4997 if (!pkt) {
667024a3 4998 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 4999 "qla_target(%d): %s failed: unable to allocate "
5000 "request packet", vha->vp_idx, __func__);
33e79977 5001 return -ENOMEM;
2d70c103
NB		 5002 }
5003
ce1025cd 5004 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5005 pkt->entry_count = 1;
5006 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5007
5008 ctio24 = (struct ctio7_to_24xx *)pkt;
5009 ctio24->entry_type = CTIO_TYPE7;
5010 ctio24->nport_handle = sess->loop_id;
ad950360 5011 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5012 ctio24->vp_index = vha->vp_idx;
5013 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5014 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5015 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5016 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5017 temp = (atio->u.isp24.attr << 9) |
2d70c103 5018 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5019 CTIO7_FLAGS_DONT_RET_CTIO;
5020 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5021 /*
5022 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5023 * if the explicit conformation is used.
5024 */
5025 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5026 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5027 /* Memory Barrier */
5028 wmb();
2d70c103 5029 qla2x00_start_iocbs(vha, vha->req);
33e79977
QT		 5030 return 0;
5031}
5032
5033/*
5034 * This routine is used to allocate a command for either a QFull condition
5035 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5036 * out previously.
5037 */
5038static void
5039qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5040 struct atio_from_isp *atio, uint16_t status, int qfull)
5041{
5042 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5043 struct qla_hw_data *ha = vha->hw;
5d964837 5044 struct fc_port *sess;
33e79977
QT		 5045 struct se_session *se_sess;
5046 struct qla_tgt_cmd *cmd;
5047 int tag;
5048
5049 if (unlikely(tgt->tgt_stop)) {
5050 ql_dbg(ql_dbg_io, vha, 0x300a,
5051 "New command while device %p is shutting down\n", tgt);
5052 return;
5053 }
5054
5055 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5056 vha->hw->tgt.num_qfull_cmds_dropped++;
5057 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5058 vha->qla_stats.stat_max_qfull_cmds_dropped)
5059 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5060 vha->hw->tgt.num_qfull_cmds_dropped;
5061
5062 ql_dbg(ql_dbg_io, vha, 0x3068,
5063 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5064 vha->vp_idx, __func__,
5065 vha->hw->tgt.num_qfull_cmds_dropped);
5066
5067 qlt_chk_exch_leak_thresh_hold(vha);
5068 return;
5069 }
5070
5071 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5072 (vha, atio->u.isp24.fcp_hdr.s_id);
5073 if (!sess)
5074 return;
5075
5076 se_sess = sess->se_sess;
5077
5078 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5079 if (tag < 0)
5080 return;
5081
5082 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5083 if (!cmd) {
5084 ql_dbg(ql_dbg_io, vha, 0x3009,
5085 "qla_target(%d): %s: Allocation of cmd failed\n",
5086 vha->vp_idx, __func__);
5087
5088 vha->hw->tgt.num_qfull_cmds_dropped++;
5089 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5090 vha->qla_stats.stat_max_qfull_cmds_dropped)
5091 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5092 vha->hw->tgt.num_qfull_cmds_dropped;
5093
5094 qlt_chk_exch_leak_thresh_hold(vha);
5095 return;
5096 }
5097
5098 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5099
5100 qlt_incr_num_pend_cmds(vha);
5101 INIT_LIST_HEAD(&cmd->cmd_list);
5102 memcpy(&cmd->atio, atio, sizeof(*atio));
5103
5104 cmd->tgt = vha->vha_tgt.qla_tgt;
5105 cmd->vha = vha;
5106 cmd->reset_count = vha->hw->chip_reset;
5107 cmd->q_full = 1;
5108
5109 if (qfull) {
5110 cmd->q_full = 1;
5111 /* NOTE: borrowing the state field to carry the status */
5112 cmd->state = status;
5113 } else
5114 cmd->term_exchg = 1;
5115
5116 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5117
5118 vha->hw->tgt.num_qfull_cmds_alloc++;
5119 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5120 vha->qla_stats.stat_max_qfull_cmds_alloc)
5121 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977
QT		 5122 vha->hw->tgt.num_qfull_cmds_alloc;
5123}
5124
5125int
5126qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5127{
5128 struct qla_hw_data *ha = vha->hw;
5129 unsigned long flags;
5130 struct qla_tgt_cmd *cmd, *tcmd;
5131 struct list_head free_list;
5132 int rc = 0;
5133
5134 if (list_empty(&ha->tgt.q_full_list))
5135 return 0;
5136
5137 INIT_LIST_HEAD(&free_list);
5138
5139 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5140
5141 if (list_empty(&ha->tgt.q_full_list)) {
5142 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5143 return 0;
5144 }
5145
5146 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5147 if (cmd->q_full)
5148 /* cmd->state is a borrowed field to hold status */
5149 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5150 else if (cmd->term_exchg)
5151 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5152
5153 if (rc == -ENOMEM)
5154 break;
5155
5156 if (cmd->q_full)
5157 ql_dbg(ql_dbg_io, vha, 0x3006,
5158 "%s: busy sent for ox_id[%04x]\n", __func__,
5159 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5160 else if (cmd->term_exchg)
5161 ql_dbg(ql_dbg_io, vha, 0x3007,
5162 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5163 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5164 else
5165 ql_dbg(ql_dbg_io, vha, 0x3008,
5166 "%s: Unexpected cmd in QFull list %p\n", __func__,
5167 cmd);
5168
5169 list_del(&cmd->cmd_list);
5170 list_add_tail(&cmd->cmd_list, &free_list);
5171
5172 /* piggy back on hardware_lock for protection */
5173 vha->hw->tgt.num_qfull_cmds_alloc--;
5174 }
5175 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5176
5177 cmd = NULL;
5178
5179 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5180 list_del(&cmd->cmd_list);
5181 /* This cmd was never sent to TCM. There is no need
5182 * to schedule free or call free_cmd
5183 */
5184 qlt_free_cmd(cmd);
5185 }
5186 return rc;
5187}
5188
5189static void
5190qlt_send_busy(struct scsi_qla_host *vha,
5191 struct atio_from_isp *atio, uint16_t status)
5192{
5193 int rc = 0;
5194
5195 rc = __qlt_send_busy(vha, atio, status);
5196 if (rc == -ENOMEM)
5197 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5198}
5199
5200static int
5201qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
8b666809 5202 struct atio_from_isp *atio, bool ha_locked)
33e79977
QT		 5203{
5204 struct qla_hw_data *ha = vha->hw;
5205 uint16_t status;
8b666809 5206 unsigned long flags;
33e79977
QT		 5207
5208 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5209 return 0;
5210
8b666809
QT		 5211 if (!ha_locked)
5212 spin_lock_irqsave(&ha->hardware_lock, flags);
33e79977
QT		 5213 status = temp_sam_status;
5214 qlt_send_busy(vha, atio, status);
8b666809
QT		 5215 if (!ha_locked)
5216 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5217
33e79977 5218 return 1;
2d70c103
NB		 5219}
5220
5221/* ha->hardware_lock supposed to be held on entry */
5222/* called via callback from qla2xxx */
5223static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5224 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5225{
5226 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5227 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5228 int rc;
2f424b9b 5229 unsigned long flags;
2d70c103
NB		 5230
5231 if (unlikely(tgt == NULL)) {
ec7193e2 5232 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5233 "ATIO pkt, but no tgt (ha %p)", ha);
5234 return;
5235 }
2d70c103
NB		 5236 /*
5237 * In tgt_stop mode we also should allow all requests to pass.
5238 * Otherwise, some commands can stuck.
5239 */
5240
2f424b9b 5241 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5242
5243 switch (atio->u.raw.entry_type) {
5244 case ATIO_TYPE7:
2d70c103
NB		 5245 if (unlikely(atio->u.isp24.exchange_addr ==
5246 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5247 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5248 "qla_target(%d): ATIO_TYPE7 "
5249 "received with UNKNOWN exchange address, "
5250 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5251 if (!ha_locked)
5252 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5253 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
2f424b9b
QT		 5254 if (!ha_locked)
5255 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5256 break;
5257 }
33e79977
QT		 5258
5259
5260
5261 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
8b666809 5262 rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
33e79977 5263 if (rc != 0) {
2f424b9b 5264 tgt->atio_irq_cmd_count--;
33e79977
QT		 5265 return;
5266 }
2d70c103 5267 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5268 } else {
2d70c103 5269 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5270 }
2d70c103
NB		 5271 if (unlikely(rc != 0)) {
5272 if (rc == -ESRCH) {
2f424b9b
QT		 5273 if (!ha_locked)
5274 spin_lock_irqsave
5275 (&ha->hardware_lock, flags);
5276
2d70c103
NB		 5277#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5278 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5279#else
a07100e0 5280 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103 5281#endif
2f424b9b
QT		 5282
5283 if (!ha_locked)
5284 spin_unlock_irqrestore
5285 (&ha->hardware_lock, flags);
5286
2d70c103
NB		 5287 } else {
5288 if (tgt->tgt_stop) {
5289 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5290 "qla_target: Unable to send "
5291 "command to target for req, "
5292 "ignoring.\n");
5293 } else {
5294 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5295 "qla_target(%d): Unable to send "
5296 "command to target, sending BUSY "
5297 "status.\n", vha->vp_idx);
2f424b9b
QT		 5298 if (!ha_locked)
5299 spin_lock_irqsave(
5300 &ha->hardware_lock, flags);
2d70c103 5301 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
2f424b9b
QT		 5302 if (!ha_locked)
5303 spin_unlock_irqrestore(
5304 &ha->hardware_lock, flags);
2d70c103
NB		 5305 }
5306 }
5307 }
5308 break;
5309
5310 case IMMED_NOTIFY_TYPE:
5311 {
5312 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5313 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5314 "qla_target(%d): Received ATIO packet %x "
5315 "with error status %x\n", vha->vp_idx,
5316 atio->u.raw.entry_type,
5317 atio->u.isp2x.entry_status);
5318 break;
5319 }
5320 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5321
5322 if (!ha_locked)
5323 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5324 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5325 if (!ha_locked)
5326 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5327 break;
5328 }
5329
5330 default:
5331 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5332 "qla_target(%d): Received unknown ATIO atio "
5333 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5334 break;
5335 }
5336
2f424b9b 5337 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5338}
5339
5340/* ha->hardware_lock supposed to be held on entry */
5341/* called via callback from qla2xxx */
5342static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5343{
5344 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5345 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5346
5347 if (unlikely(tgt == NULL)) {
5348 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5349 "qla_target(%d): Response pkt %x received, but no "
5350 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5351 return;
5352 }
5353
2d70c103
NB		 5354 /*
5355 * In tgt_stop mode we also should allow all requests to pass.
5356 * Otherwise, some commands can stuck.
5357 */
5358
5359 tgt->irq_cmd_count++;
5360
5361 switch (pkt->entry_type) {
f83adb61 5362 case CTIO_CRC2:
2d70c103
NB		 5363 case CTIO_TYPE7:
5364 {
5365 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 5366 qlt_do_ctio_completion(vha, entry->handle,
5367 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5368 entry);
5369 break;
5370 }
5371
5372 case ACCEPT_TGT_IO_TYPE:
5373 {
5374 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5375 int rc;
2d70c103 5376 if (atio->u.isp2x.status !=
ad950360 5377 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5378 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5379 "qla_target(%d): ATIO with error "
5380 "status %x received\n", vha->vp_idx,
5381 le16_to_cpu(atio->u.isp2x.status));
5382 break;
5383 }
2d70c103 5384
8b666809 5385 rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
33e79977
QT		 5386 if (rc != 0) {
5387 tgt->irq_cmd_count--;
5388 return;
5389 }
5390
2d70c103
NB		 5391 rc = qlt_handle_cmd_for_atio(vha, atio);
5392 if (unlikely(rc != 0)) {
5393 if (rc == -ESRCH) {
5394#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5395 qlt_send_busy(vha, atio, 0);
5396#else
a07100e0 5397 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103
NB		 5398#endif
5399 } else {
5400 if (tgt->tgt_stop) {
5401 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5402 "qla_target: Unable to send "
5403 "command to target, sending TERM "
5404 "EXCHANGE for rsp\n");
5405 qlt_send_term_exchange(vha, NULL,
a07100e0 5406 atio, 1, 0);
2d70c103
NB		 5407 } else {
5408 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5409 "qla_target(%d): Unable to send "
5410 "command to target, sending BUSY "
5411 "status\n", vha->vp_idx);
5412 qlt_send_busy(vha, atio, 0);
5413 }
5414 }
5415 }
5416 }
5417 break;
5418
5419 case CONTINUE_TGT_IO_TYPE:
5420 {
5421 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5422 qlt_do_ctio_completion(vha, entry->handle,
5423 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5424 entry);
5425 break;
5426 }
5427
5428 case CTIO_A64_TYPE:
5429 {
5430 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5431 qlt_do_ctio_completion(vha, entry->handle,
5432 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5433 entry);
5434 break;
5435 }
5436
5437 case IMMED_NOTIFY_TYPE:
5438 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5439 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5440 break;
5441
5442 case NOTIFY_ACK_TYPE:
5443 if (tgt->notify_ack_expected > 0) {
5444 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5445 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5446 "NOTIFY_ACK seq %08x status %x\n",
5447 le16_to_cpu(entry->u.isp2x.seq_id),
5448 le16_to_cpu(entry->u.isp2x.status));
5449 tgt->notify_ack_expected--;
5450 if (entry->u.isp2x.status !=
ad950360 5451 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5452 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5453 "qla_target(%d): NOTIFY_ACK "
5454 "failed %x\n", vha->vp_idx,
5455 le16_to_cpu(entry->u.isp2x.status));
5456 }
5457 } else {
5458 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5459 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5460 vha->vp_idx);
5461 }
5462 break;
5463
5464 case ABTS_RECV_24XX:
5465 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5466 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5467 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5468 break;
5469
5470 case ABTS_RESP_24XX:
5471 if (tgt->abts_resp_expected > 0) {
5472 struct abts_resp_from_24xx_fw *entry =
5473 (struct abts_resp_from_24xx_fw *)pkt;
5474 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5475 "ABTS_RESP_24XX: compl_status %x\n",
5476 entry->compl_status);
5477 tgt->abts_resp_expected--;
5478 if (le16_to_cpu(entry->compl_status) !=
5479 ABTS_RESP_COMPL_SUCCESS) {
5480 if ((entry->error_subcode1 == 0x1E) &&
5481 (entry->error_subcode2 == 0)) {
5482 /*
5483 * We've got a race here: aborted
5484 * exchange not terminated, i.e.
5485 * response for the aborted command was
5486 * sent between the abort request was
5487 * received and processed.
5488 * Unfortunately, the firmware has a
5489 * silly requirement that all aborted
5490 * exchanges must be explicitely
5491 * terminated, otherwise it refuses to
5492 * send responses for the abort
5493 * requests. So, we have to
5494 * (re)terminate the exchange and retry
5495 * the abort response.
5496 */
5497 qlt_24xx_retry_term_exchange(vha,
5498 entry);
5499 } else
5500 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5501 "qla_target(%d): ABTS_RESP_24XX "
5502 "failed %x (subcode %x:%x)",
5503 vha->vp_idx, entry->compl_status,
5504 entry->error_subcode1,
5505 entry->error_subcode2);
5506 }
5507 } else {
5508 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5509 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5510 "received\n", vha->vp_idx);
5511 }
5512 break;
5513
5514 default:
5515 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5516 "qla_target(%d): Received unknown response pkt "
5517 "type %x\n", vha->vp_idx, pkt->entry_type);
5518 break;
5519 }
5520
5521 tgt->irq_cmd_count--;
5522}
5523
5524/*
5525 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5526 */
5527void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5528 uint16_t *mailbox)
5529{
5530 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5531 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5532 int login_code;
2d70c103 5533
2d70c103
NB		 5534 if (!ha->tgt.tgt_ops)
5535 return;
5536
5537 if (unlikely(tgt == NULL)) {
5538 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5539 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5540 return;
5541 }
5542
5543 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5544 IS_QLA2100(ha))
5545 return;
5546 /*
5547 * In tgt_stop mode we also should allow all requests to pass.
5548 * Otherwise, some commands can stuck.
5549 */
5550
5551 tgt->irq_cmd_count++;
5552
5553 switch (code) {
5554 case MBA_RESET: /* Reset */
5555 case MBA_SYSTEM_ERR: /* System Error */
5556 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5557 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5559 "qla_target(%d): System error async event %#x "
6efb3c0a 5560 "occurred", vha->vp_idx, code);
2d70c103
NB		 5561 break;
5562 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5563 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5564 break;
5565
5566 case MBA_LOOP_UP:
5567 {
5568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5569 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5570 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5571 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5572 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5573 if (tgt->link_reinit_iocb_pending) {
5574 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5575 0, 0, 0, 0, 0, 0);
5576 tgt->link_reinit_iocb_pending = 0;
5577 }
5578 break;
5579 }
5580
5581 case MBA_LIP_OCCURRED:
5582 case MBA_LOOP_DOWN:
5583 case MBA_LIP_RESET:
5584 case MBA_RSCN_UPDATE:
5585 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5586 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5587 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5588 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5589 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5590 break;
5591
ead03855 5592 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5593 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5594 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5595 vha->vp_idx,
5596 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5597 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5598
5599 if (le16_to_cpu(mailbox[3]) == 1) {
5600 /* exchange starvation. */
5601 vha->hw->exch_starvation++;
5602 if (vha->hw->exch_starvation > 5) {
83548fe2 5603 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5604 "Exchange starvation-. Resetting RISC\n");
5605
5606 vha->hw->exch_starvation = 0;
5607 if (IS_P3P_TYPE(vha->hw))
5608 set_bit(FCOE_CTX_RESET_NEEDED,
5609 &vha->dpc_flags);
5610 else
5611 set_bit(ISP_ABORT_NEEDED,
5612 &vha->dpc_flags);
5613 qla2xxx_wake_dpc(vha);
5614 }
5615 }
5616 break;
5617
2d70c103
NB		 5618 case MBA_PORT_UPDATE:
5619 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5620 "qla_target(%d): Port update async event %#x "
6efb3c0a 5621 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5622 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5623 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5624 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5625
5626 login_code = le16_to_cpu(mailbox[2]);
ead03855 5627 if (login_code == 0x4) {
2d70c103
NB		 5628 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5629 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5630 vha->hw->exch_starvation = 0;
5631 } else if (login_code == 0x7)
2d70c103
NB		 5632 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5633 "Async MB 2: Port Logged Out\n");
5634 break;
2d70c103 5635 default:
2d70c103
NB		 5636 break;
5637 }
5638
5639 tgt->irq_cmd_count--;
5640}
5641
5642static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5643 uint16_t loop_id)
5644{
726b8548 5645 fc_port_t *fcport, *tfcp, *del;
2d70c103 5646 int rc;
726b8548
QT		 5647 unsigned long flags;
5648 u8 newfcport = 0;
2d70c103
NB		 5649
5650 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5651 if (!fcport) {
5652 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5653 "qla_target(%d): Allocation of tmp FC port failed",
5654 vha->vp_idx);
5655 return NULL;
5656 }
5657
2d70c103
NB		 5658 fcport->loop_id = loop_id;
5659
15f30a57 5660 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5661 if (rc != QLA_SUCCESS) {
5662 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5663 "qla_target(%d): Failed to retrieve fcport "
5664 "information -- get_port_database() returned %x "
5665 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5666 kfree(fcport);
5667 return NULL;
5668 }
5669
726b8548
QT		 5670 del = NULL;
5671 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5672 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5673
5674 if (tfcp) {
5675 tfcp->d_id = fcport->d_id;
5676 tfcp->port_type = fcport->port_type;
5677 tfcp->supported_classes = fcport->supported_classes;
5678 tfcp->flags |= fcport->flags;
5679
5680 del = fcport;
5681 fcport = tfcp;
5682 } else {
5683 if (vha->hw->current_topology == ISP_CFG_F)
5684 fcport->flags |= FCF_FABRIC_DEVICE;
5685
5686 list_add_tail(&fcport->list, &vha->vp_fcports);
5687 if (!IS_SW_RESV_ADDR(fcport->d_id))
5688 vha->fcport_count++;
5689 fcport->login_gen++;
5690 fcport->disc_state = DSC_LOGIN_COMPLETE;
5691 fcport->login_succ = 1;
5692 newfcport = 1;
5693 }
5694
5695 fcport->deleted = 0;
5696 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5697
5698 switch (vha->host->active_mode) {
5699 case MODE_INITIATOR:
5700 case MODE_DUAL:
5701 if (newfcport) {
5702 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5703 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5704 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5705 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5706 qla24xx_post_upd_fcport_work(vha, fcport);
5707 } else {
83548fe2 5708 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5709 "%s %d %8phC post gpsc fcp_cnt %d\n",
5710 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5711 qla24xx_post_gpsc_work(vha, fcport);
5712 }
5713 }
5714 break;
5715
5716 case MODE_TARGET:
5717 default:
5718 break;
5719 }
5720 if (del)
5721 qla2x00_free_fcport(del);
5722
2d70c103
NB		 5723 return fcport;
5724}
5725
5726/* Must be called under tgt_mutex */
5d964837 5727static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5728 uint8_t *s_id)
5729{
5d964837 5730 struct fc_port *sess = NULL;
2d70c103
NB		 5731 fc_port_t *fcport = NULL;
5732 int rc, global_resets;
5733 uint16_t loop_id = 0;
5734
726b8548
QT		 5735 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5736 /*
5737 * This is Domain Controller, so it should be
5738 * OK to drop SCSI commands from it.
5739 */
5740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5741 "Unable to find initiator with S_ID %x:%x:%x",
5742 s_id[0], s_id[1], s_id[2]);
5743 return NULL;
5744 }
5745
71cdc079
AP		 5746 mutex_lock(&vha->vha_tgt.tgt_mutex);
5747
2d70c103 5748retry:
0e8cd71c
SK		 5749 global_resets =
5750 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5751
5752 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5753 if (rc != 0) {
71cdc079
AP		 5754 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5755
726b8548
QT		 5756 ql_log(ql_log_info, vha, 0xf071,
5757 "qla_target(%d): Unable to find "
5758 "initiator with S_ID %x:%x:%x",
5759 vha->vp_idx, s_id[0], s_id[1],
5760 s_id[2]);
71cdc079
AP		 5761
5762 if (rc == -ENOENT) {
5763 qlt_port_logo_t logo;
5764 sid_to_portid(s_id, &logo.id);
5765 logo.cmd_count = 1;
5766 qlt_send_first_logo(vha, &logo);
5767 }
5768
2d70c103
NB		 5769 return NULL;
5770 }
5771
5772 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5773 if (!fcport) {
5774 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5775 return NULL;
71cdc079 5776 }
2d70c103
NB		 5777
5778 if (global_resets !=
0e8cd71c 5779 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5780 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5781 "qla_target(%d): global reset during session discovery "
5782 "(counter was %d, new %d), retrying", vha->vp_idx,
5783 global_resets,
0e8cd71c
SK		 5784 atomic_read(&vha->vha_tgt.
5785 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5786 goto retry;
5787 }
5788
5789 sess = qlt_create_sess(vha, fcport, true);
5790
71cdc079
AP		 5791 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5792
2d70c103
NB		 5793 return sess;
5794}
5795
5796static void qlt_abort_work(struct qla_tgt *tgt,
5797 struct qla_tgt_sess_work_param *prm)
5798{
5799 struct scsi_qla_host *vha = tgt->vha;
5800 struct qla_hw_data *ha = vha->hw;
5d964837 5801 struct fc_port *sess = NULL;
7560151b 5802 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5803 uint32_t be_s_id;
5804 uint8_t s_id[3];
5805 int rc;
5806
7560151b 5807 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5808
5809 if (tgt->tgt_stop)
7560151b 5810 goto out_term2;
2d70c103
NB		 5811
5812 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5813 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5814 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5815
5816 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5817 (unsigned char *)&be_s_id);
5818 if (!sess) {
7560151b 5819 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5820
2d70c103
NB		 5821 sess = qlt_make_local_sess(vha, s_id);
5822 /* sess has got an extra creation ref */
2d70c103 5823
7560151b 5824 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5825 if (!sess)
7560151b 5826 goto out_term2;
2d70c103 5827 } else {
726b8548 5828 if (sess->deleted) {
e52a8b45 5829 sess = NULL;
7560151b 5830 goto out_term2;
e52a8b45
AP		 5831 }
5832
726b8548 5833 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5834 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 5835 "%s: kref_get fail %8phC \n",
5836 __func__, sess->port_name);
5837 sess = NULL;
5838 goto out_term2;
5839 }
2d70c103
NB		 5840 }
5841
2d70c103 5842 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 5843 ha->tgt.tgt_ops->put_sess(sess);
5844 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5845
2d70c103
NB		 5846 if (rc != 0)
5847 goto out_term;
2d70c103
NB		 5848 return;
5849
7560151b 5850out_term2:
f159b3c7
QT		 5851 if (sess)
5852 ha->tgt.tgt_ops->put_sess(sess);
5853 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 5854
2d70c103 5855out_term:
f159b3c7 5856 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5857 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
7560151b 5858 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5859}
5860
5861static void qlt_tmr_work(struct qla_tgt *tgt,
5862 struct qla_tgt_sess_work_param *prm)
5863{
5864 struct atio_from_isp *a = &prm->tm_iocb2;
5865 struct scsi_qla_host *vha = tgt->vha;
5866 struct qla_hw_data *ha = vha->hw;
5d964837 5867 struct fc_port *sess = NULL;
2d70c103
NB		 5868 unsigned long flags;
5869 uint8_t *s_id = NULL; /* to hide compiler warnings */
5870 int rc;
f775bd14 5871 u64 unpacked_lun;
52c82823 5872 int fn;
2d70c103
NB		 5873 void *iocb;
5874
7560151b 5875 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5876
5877 if (tgt->tgt_stop)
f159b3c7 5878 goto out_term2;
2d70c103
NB		 5879
5880 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5881 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5882 if (!sess) {
7560151b 5883 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5884
2d70c103
NB		 5885 sess = qlt_make_local_sess(vha, s_id);
5886 /* sess has got an extra creation ref */
2d70c103 5887
7560151b 5888 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 5889 if (!sess)
f159b3c7 5890 goto out_term2;
2d70c103 5891 } else {
726b8548 5892 if (sess->deleted) {
e52a8b45 5893 sess = NULL;
f159b3c7 5894 goto out_term2;
e52a8b45
AP		 5895 }
5896
726b8548 5897 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5898 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 5899 "%s: kref_get fail %8phC\n",
5900 __func__, sess->port_name);
5901 sess = NULL;
f159b3c7 5902 goto out_term2;
726b8548 5903 }
2d70c103
NB		 5904 }
5905
5906 iocb = a;
2d70c103 5907 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 5908 unpacked_lun =
5909 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 5910
5911 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 5912 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5913 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 5914
5915 if (rc != 0)
5916 goto out_term;
2d70c103
NB		 5917 return;
5918
f159b3c7
QT		 5919out_term2:
5920 if (sess)
5921 ha->tgt.tgt_ops->put_sess(sess);
5922 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5923out_term:
a07100e0 5924 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 5925}
5926
5927static void qlt_sess_work_fn(struct work_struct *work)
5928{
5929 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5930 struct scsi_qla_host *vha = tgt->vha;
5931 unsigned long flags;
5932
5933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5934
5935 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5936 while (!list_empty(&tgt->sess_works_list)) {
5937 struct qla_tgt_sess_work_param *prm = list_entry(
5938 tgt->sess_works_list.next, typeof(*prm),
5939 sess_works_list_entry);
5940
5941 /*
5942 * This work can be scheduled on several CPUs at time, so we
5943 * must delete the entry to eliminate double processing
5944 */
5945 list_del(&prm->sess_works_list_entry);
5946
5947 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5948
5949 switch (prm->type) {
5950 case QLA_TGT_SESS_WORK_ABORT:
5951 qlt_abort_work(tgt, prm);
5952 break;
5953 case QLA_TGT_SESS_WORK_TM:
5954 qlt_tmr_work(tgt, prm);
5955 break;
5956 default:
5957 BUG_ON(1);
5958 break;
5959 }
5960
5961 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5962
5963 kfree(prm);
5964 }
5965 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5966}
5967
5968/* Must be called under tgt_host_action_mutex */
5969int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
5970{
5971 struct qla_tgt *tgt;
5972
5973 if (!QLA_TGT_MODE_ENABLED())
5974 return 0;
5975
33c36c0a
AE		 5976 if (!IS_TGT_MODE_CAPABLE(ha)) {
5977 ql_log(ql_log_warn, base_vha, 0xe070,
5978 "This adapter does not support target mode.\n");
5979 return 0;
5980 }
5981
2d70c103 5982 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 5983 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 5984
0e8cd71c 5985 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 5986
5987 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
5988 if (!tgt) {
5989 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
5990 "Unable to allocate struct qla_tgt\n");
5991 return -ENOMEM;
5992 }
5993
5994 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
5995 base_vha->host->hostt->supported_mode |= MODE_TARGET;
5996
5997 tgt->ha = ha;
5998 tgt->vha = base_vha;
5999 init_waitqueue_head(&tgt->waitQ);
2d70c103 6000 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6001 spin_lock_init(&tgt->sess_work_lock);
6002 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6003 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6004 atomic_set(&tgt->tgt_global_resets_count, 0);
6005
0e8cd71c 6006 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6007
6008 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6009 "qla_target(%d): using 64 Bit PCI addressing",
6010 base_vha->vp_idx);
6011 tgt->tgt_enable_64bit_addr = 1;
6012 /* 3 is reserved */
6013 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6014 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
6015 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
6016
6017 mutex_lock(&qla_tgt_mutex);
6018 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6019 mutex_unlock(&qla_tgt_mutex);
6020
f1443eeb
QT		 6021 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6022 ha->tgt.tgt_ops->add_target(base_vha);
6023
2d70c103
NB		 6024 return 0;
6025}
6026
6027/* Must be called under tgt_host_action_mutex */
6028int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6029{
0e8cd71c 6030 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6031 return 0;
6032
ddb95145
NB		 6033 if (vha->fc_vport) {
6034 qlt_release(vha->vha_tgt.qla_tgt);
6035 return 0;
6036 }
33e79977
QT		 6037
6038 /* free left over qfull cmds */
6039 qlt_init_term_exchange(vha);
6040
2d70c103 6041 mutex_lock(&qla_tgt_mutex);
0e8cd71c 6042 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 6043 mutex_unlock(&qla_tgt_mutex);
6044
6045 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6046 vha->host_no, ha);
0e8cd71c 6047 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6048
6049 return 0;
6050}
6051
482c9dc7
QT		 6052void qlt_remove_target_resources(struct qla_hw_data *ha)
6053{
6054 struct scsi_qla_host *node;
6055 u32 key = 0;
6056
6057 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6058 btree_remove32(&ha->tgt.host_map, key);
6059
6060 btree_destroy32(&ha->tgt.host_map);
6061}
6062
2d70c103
NB		 6063static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6064 unsigned char *b)
6065{
6066 int i;
6067
6068 pr_debug("qla2xxx HW vha->node_name: ");
6069 for (i = 0; i < WWN_SIZE; i++)
6070 pr_debug("%02x ", vha->node_name[i]);
6071 pr_debug("\n");
6072 pr_debug("qla2xxx HW vha->port_name: ");
6073 for (i = 0; i < WWN_SIZE; i++)
6074 pr_debug("%02x ", vha->port_name[i]);
6075 pr_debug("\n");
6076
6077 pr_debug("qla2xxx passed configfs WWPN: ");
6078 put_unaligned_be64(wwpn, b);
6079 for (i = 0; i < WWN_SIZE; i++)
6080 pr_debug("%02x ", b[i]);
6081 pr_debug("\n");
6082}
6083
6084/**
6085 * qla_tgt_lport_register - register lport with external module
6086 *
6087 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6088 * @wwpn: Passwd FC target WWPN
6089 * @callback: lport initialization callback for tcm_qla2xxx code
6090 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6091 */
49a47f2c
NB		 6092int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6093 u64 npiv_wwpn, u64 npiv_wwnn,
6094 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6095{
6096 struct qla_tgt *tgt;
6097 struct scsi_qla_host *vha;
6098 struct qla_hw_data *ha;
6099 struct Scsi_Host *host;
6100 unsigned long flags;
6101 int rc;
6102 u8 b[WWN_SIZE];
6103
6104 mutex_lock(&qla_tgt_mutex);
6105 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6106 vha = tgt->vha;
6107 ha = vha->hw;
6108
6109 host = vha->host;
6110 if (!host)
6111 continue;
6112
2d70c103
NB		 6113 if (!(host->hostt->supported_mode & MODE_TARGET))
6114 continue;
6115
6116 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6117 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6118 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6119 host->host_no);
6120 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6121 continue;
6122 }
ddb95145
NB		 6123 if (tgt->tgt_stop) {
6124 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6125 host->host_no);
6126 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6127 continue;
6128 }
2d70c103
NB		 6129 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6130
6131 if (!scsi_host_get(host)) {
6132 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6133 "Unable to scsi_host_get() for"
6134 " qla2xxx scsi_host\n");
6135 continue;
6136 }
49a47f2c 6137 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6138
6139 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6140 scsi_host_put(host);
6141 continue;
6142 }
49a47f2c
NB		 6143 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6144 if (rc != 0)
6145 scsi_host_put(host);
6146
ddb95145 6147 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6148 return rc;
6149 }
6150 mutex_unlock(&qla_tgt_mutex);
6151
6152 return -ENODEV;
6153}
6154EXPORT_SYMBOL(qlt_lport_register);
6155
6156/**
6157 * qla_tgt_lport_deregister - Degister lport
6158 *
6159 * @vha: Registered scsi_qla_host pointer
6160 */
6161void qlt_lport_deregister(struct scsi_qla_host *vha)
6162{
6163 struct qla_hw_data *ha = vha->hw;
6164 struct Scsi_Host *sh = vha->host;
6165 /*
6166 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6167 */
0e8cd71c 6168 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6169 ha->tgt.tgt_ops = NULL;
6170 /*
6171 * Release the Scsi_Host reference for the underlying qla2xxx host
6172 */
6173 scsi_host_put(sh);
6174}
6175EXPORT_SYMBOL(qlt_lport_deregister);
6176
6177/* Must be called under HW lock */
55a9066f 6178static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6179{
2d70c103
NB		 6180 switch (ql2x_ini_mode) {
6181 case QLA2XXX_INI_MODE_DISABLED:
6182 case QLA2XXX_INI_MODE_EXCLUSIVE:
6183 vha->host->active_mode = MODE_TARGET;
6184 break;
6185 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6186 vha->host->active_mode = MODE_UNKNOWN;
6187 break;
6188 case QLA2XXX_INI_MODE_DUAL:
6189 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6190 break;
6191 default:
6192 break;
6193 }
2d70c103
NB		 6194}
6195
6196/* Must be called under HW lock */
55a9066f 6197static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6198{
2d70c103
NB		 6199 switch (ql2x_ini_mode) {
6200 case QLA2XXX_INI_MODE_DISABLED:
6201 vha->host->active_mode = MODE_UNKNOWN;
6202 break;
6203 case QLA2XXX_INI_MODE_EXCLUSIVE:
6204 vha->host->active_mode = MODE_INITIATOR;
6205 break;
6206 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6207 case QLA2XXX_INI_MODE_DUAL:
6208 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6209 break;
6210 default:
6211 break;
6212 }
2d70c103
NB		 6213}
6214
6215/*
6216 * qla_tgt_enable_vha - NO LOCK HELD
6217 *
6218 * host_reset, bring up w/ Target Mode Enabled
6219 */
6220void
6221qlt_enable_vha(struct scsi_qla_host *vha)
6222{
6223 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6224 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6225 unsigned long flags;
0e8cd71c 6226 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
cdb898c5 6227 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
2d70c103
NB		 6228
6229 if (!tgt) {
6230 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6231 "Unable to locate qla_tgt pointer from"
6232 " struct qla_hw_data\n");
6233 dump_stack();
6234 return;
6235 }
6236
6237 spin_lock_irqsave(&ha->hardware_lock, flags);
6238 tgt->tgt_stopped = 0;
6239 qlt_set_mode(vha);
6240 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6241
0e8cd71c
SK		 6242 if (vha->vp_idx) {
6243 qla24xx_disable_vp(vha);
6244 qla24xx_enable_vp(vha);
6245 } else {
cdb898c5 6246 if (ha->msix_entries) {
83548fe2 6247 ql_dbg(ql_dbg_tgt, vha, 0xe081,
cdb898c5
QT		 6248 "%s: host%ld : vector %d cpu %d\n",
6249 __func__, vha->host_no,
6250 ha->msix_entries[rspq_ent].vector,
6251 ha->msix_entries[rspq_ent].cpuid);
6252
6253 ha->tgt.rspq_vector_cpuid =
6254 ha->msix_entries[rspq_ent].cpuid;
6255 }
6256
0e8cd71c
SK		 6257 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6258 qla2xxx_wake_dpc(base_vha);
6259 qla2x00_wait_for_hba_online(base_vha);
6260 }
2d70c103
NB		 6261}
6262EXPORT_SYMBOL(qlt_enable_vha);
6263
6264/*
6265 * qla_tgt_disable_vha - NO LOCK HELD
6266 *
6267 * Disable Target Mode and reset the adapter
6268 */
55a9066f 6269static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6270{
6271 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6272 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6273 unsigned long flags;
6274
6275 if (!tgt) {
6276 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6277 "Unable to locate qla_tgt pointer from"
6278 " struct qla_hw_data\n");
6279 dump_stack();
6280 return;
6281 }
6282
6283 spin_lock_irqsave(&ha->hardware_lock, flags);
6284 qlt_clear_mode(vha);
6285 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6286
6287 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6288 qla2xxx_wake_dpc(vha);
6289 qla2x00_wait_for_hba_online(vha);
6290}
6291
6292/*
6293 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6294 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6295 * members.
6296 */
6297void
6298qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6299{
0e8cd71c
SK		 6300 vha->vha_tgt.qla_tgt = NULL;
6301
6302 mutex_init(&vha->vha_tgt.tgt_mutex);
6303 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6304
6305 qlt_clear_mode(vha);
6306
6307 /*
6308 * NOTE: Currently the value is kept the same for <24xx and
6309 * >=24xx ISPs. If it is necessary to change it,
6310 * the check should be added for specific ISPs,
6311 * assigning the value appropriately.
6312 */
6313 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6314
6315 qlt_add_target(ha, vha);
2d70c103
NB		 6316}
6317
6318void
6319qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6320{
6321 /*
6322 * FC-4 Feature bit 0 indicates target functionality to the name server.
6323 */
6324 if (qla_tgt_mode_enabled(vha)) {
726b8548 6325 ct_req->req.rff_id.fc4_feature = BIT_0;
2d70c103
NB		 6326 } else if (qla_ini_mode_enabled(vha)) {
6327 ct_req->req.rff_id.fc4_feature = BIT_1;
726b8548
QT		 6328 } else if (qla_dual_mode_enabled(vha))
6329 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
2d70c103
NB		 6330}
6331
6332/*
6333 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6334 * @ha: HA context
6335 *
6336 * Beginning of ATIO ring has initialization control block already built
6337 * by nvram config routine.
6338 *
6339 * Returns 0 on success.
6340 */
6341void
6342qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6343{
6344 struct qla_hw_data *ha = vha->hw;
6345 uint16_t cnt;
6346 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6347
ead03855 6348 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6349 return;
6350
6351 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6352 pkt->u.raw.signature = ATIO_PROCESSED;
6353 pkt++;
6354 }
6355
6356}
6357
6358/*
6359 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6360 * @ha: SCSI driver HA context
6361 */
6362void
2f424b9b 6363qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6364{
6365 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6366 struct atio_from_isp *pkt;
6367 int cnt, i;
6368
ec7193e2 6369 if (!ha->flags.fw_started)
2d70c103
NB		 6370 return;
6371
5f35509d
QT		 6372 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6373 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6374 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6375 cnt = pkt->u.raw.entry_count;
6376
5f35509d
QT		 6377 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6378 /*
6379 * This packet is corrupted. The header + payload
6380 * can not be trusted. There is no point in passing
6381 * it further up.
6382 */
83548fe2 6383 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6384 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6385 pkt->u.isp24.fcp_hdr.s_id,
6386 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6387 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6388
6389 adjust_corrupted_atio(pkt);
6390 qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0);
6391 } else {
6392 qlt_24xx_atio_pkt_all_vps(vha,
6393 (struct atio_from_isp *)pkt, ha_locked);
6394 }
2d70c103
NB		 6395
6396 for (i = 0; i < cnt; i++) {
6397 ha->tgt.atio_ring_index++;
6398 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6399 ha->tgt.atio_ring_index = 0;
6400 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6401 } else
6402 ha->tgt.atio_ring_ptr++;
6403
6404 pkt->u.raw.signature = ATIO_PROCESSED;
6405 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6406 }
6407 wmb();
6408 }
6409
6410 /* Adjust ring index */
aa230bc5 6411 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6412 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6413}
6414
6415void
aa230bc5 6416qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6417{
6418 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6419 if (!QLA_TGT_MODE_ENABLED())
6420 return;
2d70c103 6421
aa230bc5
AE		 6422 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6423 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6424 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6425
6426 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6427 struct qla_msix_entry *msix = &ha->msix_entries[2];
6428 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6429
6430 icb->msix_atio = cpu_to_le16(msix->entry);
6431 ql_dbg(ql_dbg_init, vha, 0xf072,
6432 "Registering ICB vector 0x%x for atio que.\n",
6433 msix->entry);
2d70c103
NB		 6434 }
6435}
6436
6437void
6438qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6439{
6440 struct qla_hw_data *ha = vha->hw;
ead03855
QT		 6441 u32 tmp;
6442 u16 t;
2d70c103 6443
ead03855 6444 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6445 if (!ha->tgt.saved_set) {
6446 /* We save only once */
6447 ha->tgt.saved_exchange_count = nv->exchange_count;
6448 ha->tgt.saved_firmware_options_1 =
6449 nv->firmware_options_1;
6450 ha->tgt.saved_firmware_options_2 =
6451 nv->firmware_options_2;
6452 ha->tgt.saved_firmware_options_3 =
6453 nv->firmware_options_3;
6454 ha->tgt.saved_set = 1;
6455 }
6456
ead03855
QT		 6457 if (qla_tgt_mode_enabled(vha)) {
6458 nv->exchange_count = cpu_to_le16(0xFFFF);
6459 } else { /* dual */
6460 if (ql_dm_tgt_ex_pct > 100) {
6461 ql_dm_tgt_ex_pct = 50;
6462 } else if (ql_dm_tgt_ex_pct == 100) {
6463 /* leave some for FW */
6464 ql_dm_tgt_ex_pct = 95;
6465 }
6466
6467 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
6468 tmp = tmp/100;
6469 if (tmp > 0xffff)
6470 tmp = 0xffff;
6471
6472 t = tmp & 0xffff;
6473 nv->exchange_count = cpu_to_le16(t);
6474 }
2d70c103
NB		 6475
6476 /* Enable target mode */
ad950360 6477 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6478
6479 /* Disable ini mode, if requested */
726b8548 6480 if (qla_tgt_mode_enabled(vha))
ad950360 6481 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6482
6483 /* Disable Full Login after LIP */
ad950360 6484 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6485 /* Enable initial LIP */
ad950360 6486 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6487 if (ql2xtgt_tape_enable)
6488 /* Enable FC Tape support */
6489 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6490 else
6491 /* Disable FC Tape support */
6492 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6493
2d70c103 6494 /* Disable Full Login after LIP */
ad950360 6495 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6496
6497 /*
6498 * clear BIT 15 explicitly as we have seen at least
6499 * a couple of instances where this was set and this
6500 * was causing the firmware to not be initialized.
6501 */
6502 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6503 /* Enable target PRLI control */
ad950360 6504 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6505 } else {
6506 if (ha->tgt.saved_set) {
6507 nv->exchange_count = ha->tgt.saved_exchange_count;
6508 nv->firmware_options_1 =
6509 ha->tgt.saved_firmware_options_1;
6510 nv->firmware_options_2 =
6511 ha->tgt.saved_firmware_options_2;
6512 nv->firmware_options_3 =
6513 ha->tgt.saved_firmware_options_3;
6514 }
6515 return;
6516 }
6517
2d70c103
NB		 6518 if (ha->tgt.enable_class_2) {
6519 if (vha->flags.init_done)
6520 fc_host_supported_classes(vha->host) =
6521 FC_COS_CLASS2 | FC_COS_CLASS3;
6522
ad950360 6523 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6524 } else {
6525 if (vha->flags.init_done)
6526 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6527
ad950360 6528 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6529 }
6530}
6531
6532void
6533qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6534 struct init_cb_24xx *icb)
6535{
6536 struct qla_hw_data *ha = vha->hw;
6537
481ce733
QT		 6538 if (!QLA_TGT_MODE_ENABLED())
6539 return;
6540
2d70c103
NB		 6541 if (ha->tgt.node_name_set) {
6542 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6543 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6544 }
481ce733
QT		 6545
6546 /* disable ZIO at start time. */
6547 if (!vha->flags.init_done) {
6548 uint32_t tmp;
6549 tmp = le32_to_cpu(icb->firmware_options_2);
6550 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6551 icb->firmware_options_2 = cpu_to_le32(tmp);
6552 }
2d70c103
NB		 6553}
6554
aa230bc5
AE		 6555void
6556qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6557{
6558 struct qla_hw_data *ha = vha->hw;
ead03855
QT		 6559 u32 tmp;
6560 u16 t;
aa230bc5
AE		 6561
6562 if (!QLA_TGT_MODE_ENABLED())
6563 return;
6564
ead03855 6565 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6566 if (!ha->tgt.saved_set) {
6567 /* We save only once */
6568 ha->tgt.saved_exchange_count = nv->exchange_count;
6569 ha->tgt.saved_firmware_options_1 =
6570 nv->firmware_options_1;
6571 ha->tgt.saved_firmware_options_2 =
6572 nv->firmware_options_2;
6573 ha->tgt.saved_firmware_options_3 =
6574 nv->firmware_options_3;
6575 ha->tgt.saved_set = 1;
6576 }
6577
ead03855
QT		 6578 if (qla_tgt_mode_enabled(vha)) {
6579 nv->exchange_count = cpu_to_le16(0xFFFF);
6580 } else { /* dual */
6581 if (ql_dm_tgt_ex_pct > 100) {
6582 ql_dm_tgt_ex_pct = 50;
6583 } else if (ql_dm_tgt_ex_pct == 100) {
6584 /* leave some for FW */
6585 ql_dm_tgt_ex_pct = 95;
6586 }
6587
6588 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
6589 tmp = tmp/100;
6590 if (tmp > 0xffff)
6591 tmp = 0xffff;
6592 t = tmp & 0xffff;
6593 nv->exchange_count = cpu_to_le16(t);
6594 }
aa230bc5
AE		 6595
6596 /* Enable target mode */
ad950360 6597 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6598
6599 /* Disable ini mode, if requested */
726b8548 6600 if (qla_tgt_mode_enabled(vha))
ad950360 6601 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6602 /* Disable Full Login after LIP */
ad950360 6603 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6604 /* Enable initial LIP */
ad950360 6605 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6606 /*
6607 * clear BIT 15 explicitly as we have seen at
6608 * least a couple of instances where this was set
6609 * and this was causing the firmware to not be
6610 * initialized.
6611 */
6612 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6613 if (ql2xtgt_tape_enable)
6614 /* Enable FC tape support */
6615 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6616 else
6617 /* Disable FC tape support */
6618 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6619
aa230bc5 6620 /* Disable Full Login after LIP */
ad950360 6621 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6622 /* Enable target PRLI control */
ad950360 6623 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6624 } else {
6625 if (ha->tgt.saved_set) {
6626 nv->exchange_count = ha->tgt.saved_exchange_count;
6627 nv->firmware_options_1 =
6628 ha->tgt.saved_firmware_options_1;
6629 nv->firmware_options_2 =
6630 ha->tgt.saved_firmware_options_2;
6631 nv->firmware_options_3 =
6632 ha->tgt.saved_firmware_options_3;
6633 }
6634 return;
6635 }
6636
aa230bc5
AE		 6637 if (ha->tgt.enable_class_2) {
6638 if (vha->flags.init_done)
6639 fc_host_supported_classes(vha->host) =
6640 FC_COS_CLASS2 | FC_COS_CLASS3;
6641
ad950360 6642 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6643 } else {
6644 if (vha->flags.init_done)
6645 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6646
ad950360 6647 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6648 }
6649}
6650
6651void
6652qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6653 struct init_cb_81xx *icb)
6654{
6655 struct qla_hw_data *ha = vha->hw;
6656
6657 if (!QLA_TGT_MODE_ENABLED())
6658 return;
6659
6660 if (ha->tgt.node_name_set) {
6661 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6662 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6663 }
481ce733
QT		 6664
6665 /* disable ZIO at start time. */
6666 if (!vha->flags.init_done) {
6667 uint32_t tmp;
6668 tmp = le32_to_cpu(icb->firmware_options_2);
6669 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6670 icb->firmware_options_2 = cpu_to_le32(tmp);
6671 }
6672
aa230bc5
AE		 6673}
6674
6675void
6676qlt_83xx_iospace_config(struct qla_hw_data *ha)
6677{
6678 if (!QLA_TGT_MODE_ENABLED())
6679 return;
6680
6681 ha->msix_count += 1; /* For ATIO Q */
6682}
6683
2d70c103
NB		 6684int
6685qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6686 struct sts_entry_24xx *pkt)
6687{
6688 switch (pkt->entry_type) {
6689 case ABTS_RECV_24XX:
6690 case ABTS_RESP_24XX:
6691 case CTIO_TYPE7:
6692 case NOTIFY_ACK_TYPE:
f83adb61 6693 case CTIO_CRC2:
2d70c103
NB		 6694 return 1;
6695 default:
6696 return 0;
6697 }
6698}
6699
6700void
6701qlt_modify_vp_config(struct scsi_qla_host *vha,
6702 struct vp_config_entry_24xx *vpmod)
6703{
ead03855
QT		 6704 /* enable target mode. Bit5 = 1 => disable */
6705 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6706 vpmod->options_idx1 &= ~BIT_5;
726b8548 6707
ead03855 6708 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6709 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6710 vpmod->options_idx1 &= ~BIT_4;
6711}
6712
6713void
6714qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6715{
482c9dc7
QT		 6716 int rc;
6717
2d70c103
NB		 6718 if (!QLA_TGT_MODE_ENABLED())
6719 return;
6720
b20f02e1 6721 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6722 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6723 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6724 } else {
6725 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6726 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6727 }
6728
0e8cd71c
SK		 6729 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6730 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6731
6732 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6733 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6734 qlt_unknown_atio_work_fn);
6735
2d70c103 6736 qlt_clear_mode(base_vha);
482c9dc7
QT		 6737
6738 rc = btree_init32(&ha->tgt.host_map);
6739 if (rc)
83548fe2 6740 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6741 "Unable to initialize ha->host_map btree\n");
6742
6743 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6744}
6745
aa230bc5
AE		 6746irqreturn_t
6747qla83xx_msix_atio_q(int irq, void *dev_id)
6748{
6749 struct rsp_que *rsp;
6750 scsi_qla_host_t *vha;
6751 struct qla_hw_data *ha;
6752 unsigned long flags;
6753
6754 rsp = (struct rsp_que *) dev_id;
6755 ha = rsp->hw;
6756 vha = pci_get_drvdata(ha->pdev);
6757
2f424b9b 6758 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6759
2f424b9b 6760 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6761
2f424b9b 6762 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6763
6764 return IRQ_HANDLED;
6765}
6766
2f424b9b
QT		 6767static void
6768qlt_handle_abts_recv_work(struct work_struct *work)
6769{
6770 struct qla_tgt_sess_op *op = container_of(work,
6771 struct qla_tgt_sess_op, work);
6772 scsi_qla_host_t *vha = op->vha;
6773 struct qla_hw_data *ha = vha->hw;
6774 unsigned long flags;
6775
6776 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6777 return;
6778
6779 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6780 qlt_24xx_process_atio_queue(vha, 0);
6781 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6782
6783 spin_lock_irqsave(&ha->hardware_lock, flags);
6784 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6785 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6786
6787 kfree(op);
2f424b9b
QT		 6788}
6789
6790void
6791qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6792{
6793 struct qla_tgt_sess_op *op;
6794
6795 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6796
6797 if (!op) {
6798 /* do not reach for ATIO queue here. This is best effort err
6799 * recovery at this point.
6800 */
6801 qlt_response_pkt_all_vps(vha, pkt);
6802 return;
6803 }
6804
6805 memcpy(&op->atio, pkt, sizeof(*pkt));
6806 op->vha = vha;
6807 op->chip_reset = vha->hw->chip_reset;
6808 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6809 queue_work(qla_tgt_wq, &op->work);
6810 return;
6811}
6812
2d70c103
NB		 6813int
6814qlt_mem_alloc(struct qla_hw_data *ha)
6815{
6816 if (!QLA_TGT_MODE_ENABLED())
6817 return 0;
6818
6819 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6820 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6821 if (!ha->tgt.tgt_vp_map)
6822 return -ENOMEM;
6823
6824 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6825 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6826 &ha->tgt.atio_dma, GFP_KERNEL);
6827 if (!ha->tgt.atio_ring) {
6828 kfree(ha->tgt.tgt_vp_map);
6829 return -ENOMEM;
6830 }
6831 return 0;
6832}
6833
6834void
6835qlt_mem_free(struct qla_hw_data *ha)
6836{
6837 if (!QLA_TGT_MODE_ENABLED())
6838 return;
6839
6840 if (ha->tgt.atio_ring) {
6841 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6842 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6843 ha->tgt.atio_dma);
6844 }
6845 kfree(ha->tgt.tgt_vp_map);
6846}
6847
6848/* vport_slock to be held by the caller */
6849void
6850qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6851{
482c9dc7
QT		 6852 void *slot;
6853 u32 key;
6854 int rc;
6855
2d70c103
NB		 6856 if (!QLA_TGT_MODE_ENABLED())
6857 return;
6858
482c9dc7
QT		 6859 key = vha->d_id.b24;
6860
2d70c103
NB		 6861 switch (cmd) {
6862 case SET_VP_IDX:
6863 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6864 break;
6865 case SET_AL_PA:
482c9dc7
QT		 6866 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6867 if (!slot) {
83548fe2 6868 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 6869 "Save vha in host_map %p %06x\n", vha, key);
6870 rc = btree_insert32(&vha->hw->tgt.host_map,
6871 key, vha, GFP_ATOMIC);
6872 if (rc)
83548fe2 6873 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 6874 "Unable to insert s_id into host_map: %06x\n",
6875 key);
6876 return;
6877 }
83548fe2
QT		 6878 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
6879 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 6880 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 6881 break;
6882 case RESET_VP_IDX:
6883 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6884 break;
6885 case RESET_AL_PA:
83548fe2 6886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 6887 "clear vha in host_map %p %06x\n", vha, key);
6888 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6889 if (slot)
6890 btree_remove32(&vha->hw->tgt.host_map, key);
6891 vha->d_id.b24 = 0;
2d70c103
NB		 6892 break;
6893 }
6894}
6895
482c9dc7
QT		 6896void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
6897{
6898 unsigned long flags;
6899 struct qla_hw_data *ha = vha->hw;
6900
6901 if (!vha->d_id.b24) {
6902 spin_lock_irqsave(&ha->vport_slock, flags);
6903 vha->d_id = id;
6904 qlt_update_vp_map(vha, SET_AL_PA);
6905 spin_unlock_irqrestore(&ha->vport_slock, flags);
6906 } else if (vha->d_id.b24 != id.b24) {
6907 spin_lock_irqsave(&ha->vport_slock, flags);
6908 qlt_update_vp_map(vha, RESET_AL_PA);
6909 vha->d_id = id;
6910 qlt_update_vp_map(vha, SET_AL_PA);
6911 spin_unlock_irqrestore(&ha->vport_slock, flags);
6912 }
6913}
6914
2d70c103
NB		 6915static int __init qlt_parse_ini_mode(void)
6916{
6917 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6918 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6919 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6920 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6921 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6922 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 6923 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
6924 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 6925 else
6926 return false;
6927
6928 return true;
6929}
6930
6931int __init qlt_init(void)
6932{
6933 int ret;
6934
6935 if (!qlt_parse_ini_mode()) {
6936 ql_log(ql_log_fatal, NULL, 0xe06b,
6937 "qlt_parse_ini_mode() failed\n");
6938 return -EINVAL;
6939 }
6940
6941 if (!QLA_TGT_MODE_ENABLED())
6942 return 0;
6943
2d70c103
NB		 6944 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6945 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6946 qla_tgt_mgmt_cmd), 0, NULL);
6947 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 6948 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 6949 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 6950 return -ENOMEM;
2d70c103
NB		 6951 }
6952
b7bd104e 6953 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 6954 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
6955 0, NULL);
b7bd104e
AP		 6956
6957 if (!qla_tgt_plogi_cachep) {
6958 ql_log(ql_log_fatal, NULL, 0xe06d,
6959 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6960 ret = -ENOMEM;
6961 goto out_mgmt_cmd_cachep;
6962 }
6963
2d70c103
NB		 6964 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6965 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6966 if (!qla_tgt_mgmt_cmd_mempool) {
6967 ql_log(ql_log_fatal, NULL, 0xe06e,
6968 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6969 ret = -ENOMEM;
b7bd104e 6970 goto out_plogi_cachep;
2d70c103
NB		 6971 }
6972
6973 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6974 if (!qla_tgt_wq) {
6975 ql_log(ql_log_fatal, NULL, 0xe06f,
6976 "alloc_workqueue for qla_tgt_wq failed\n");
6977 ret = -ENOMEM;
6978 goto out_cmd_mempool;
6979 }
6980 /*
6981 * Return 1 to signal that initiator-mode is being disabled
6982 */
6983 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6984
6985out_cmd_mempool:
6986 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 6987out_plogi_cachep:
6988 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 6989out_mgmt_cmd_cachep:
6990 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 6991 return ret;
6992}
6993
6994void qlt_exit(void)
6995{
6996 if (!QLA_TGT_MODE_ENABLED())
6997 return;
6998
6999 destroy_workqueue(qla_tgt_wq);
7000 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7001 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7002 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7003}
Ubuntu Artful kernel mirror