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scsi: qla2xxx: Remove unused irq_cmd_count field.
[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
99e1b683 62static int ql_dm_tgt_ex_pct = 0;
ead03855
QT		 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);
3a33dc95
QT		 1430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1431 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1432 return -EPERM;
1433 }
1434 }
2d70c103
NB		 1435 if (tgt->tgt_stop || tgt->tgt_stopped) {
1436 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1437 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1438 mutex_unlock(&qla_tgt_mutex);
1439 return -EPERM;
2d70c103
NB		 1440 }
1441
3a33dc95 1442 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1443 vha->host_no, vha);
1444 /*
1445 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1446 * Lock is needed, because we still can get an incoming packet.
1447 */
0e8cd71c 1448 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1449 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1450 tgt->tgt_stop = 1;
c5701042 1451 qlt_clear_tgt_db(tgt);
7560151b 1452 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1453 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1454 mutex_unlock(&qla_tgt_mutex);
2d70c103 1455
2d70c103
NB		 1456 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1457 "Waiting for sess works (tgt %p)", tgt);
1458 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1459 while (!list_empty(&tgt->sess_works_list)) {
1460 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1461 flush_scheduled_work();
1462 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1463 }
1464 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1465
1466 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1467 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103
NB		 1468
1469 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1470
1471 /* Big hammer */
ead03855
QT		 1472 if (!ha->flags.host_shutting_down &&
1473 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1474 qlt_disable_vha(vha);
1475
1476 /* Wait for sessions to clear out (just in case) */
1477 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1478 return 0;
2d70c103
NB		 1479}
1480EXPORT_SYMBOL(qlt_stop_phase1);
1481
1482/* Called by tcm_qla2xxx configfs code */
1483void qlt_stop_phase2(struct qla_tgt *tgt)
1484{
3a33dc95 1485 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 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 }
3a33dc95
QT		 1493 if (!tgt->tgt_stop) {
1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1495 "%s: phase1 stop is not completed\n", __func__);
1496 dump_stack();
1497 return;
1498 }
2d70c103 1499
0e8cd71c 1500 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1501 tgt->tgt_stop = 0;
1502 tgt->tgt_stopped = 1;
0e8cd71c 1503 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1504
3a33dc95 1505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1506 tgt);
1507}
1508EXPORT_SYMBOL(qlt_stop_phase2);
1509
1510/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1511static void qlt_release(struct qla_tgt *tgt)
2d70c103 1512{
0e8cd71c 1513 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1514
3a33dc95
QT		 1515 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1516 !tgt->tgt_stopped)
1517 qlt_stop_phase1(tgt);
1518
0e8cd71c 1519 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1520 qlt_stop_phase2(tgt);
1521
0e8cd71c 1522 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1523
0e8cd71c 1524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1525 "Release of tgt %p finished\n", tgt);
1526
1527 kfree(tgt);
1528}
1529
1530/* ha->hardware_lock supposed to be held on entry */
1531static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1532 const void *param, unsigned int param_size)
1533{
1534 struct qla_tgt_sess_work_param *prm;
1535 unsigned long flags;
1536
1537 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1538 if (!prm) {
1539 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1540 "qla_target(%d): Unable to create session "
1541 "work, command will be refused", 0);
1542 return -ENOMEM;
1543 }
1544
1545 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1546 "Scheduling work (type %d, prm %p)"
1547 " to find session for param %p (size %d, tgt %p)\n",
1548 type, prm, param, param_size, tgt);
1549
1550 prm->type = type;
1551 memcpy(&prm->tm_iocb, param, param_size);
1552
1553 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1554 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1555 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1556
1557 schedule_work(&tgt->sess_work);
1558
1559 return 0;
1560}
1561
1562/*
1563 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1564 */
1565static void qlt_send_notify_ack(struct scsi_qla_host *vha,
1566 struct imm_ntfy_from_isp *ntfy,
1567 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1568 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1569{
1570 struct qla_hw_data *ha = vha->hw;
1571 request_t *pkt;
1572 struct nack_to_isp *nack;
1573
ec7193e2
QT		 1574 if (!ha->flags.fw_started)
1575 return;
1576
2d70c103
NB		 1577 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1578
1579 /* Send marker if required */
1580 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1581 return;
1582
1583 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
1584 if (!pkt) {
1585 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1586 "qla_target(%d): %s failed: unable to allocate "
1587 "request packet\n", vha->vp_idx, __func__);
1588 return;
1589 }
1590
0e8cd71c
SK		 1591 if (vha->vha_tgt.qla_tgt != NULL)
1592 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1593
1594 pkt->entry_type = NOTIFY_ACK_TYPE;
1595 pkt->entry_count = 1;
1596
1597 nack = (struct nack_to_isp *)pkt;
1598 nack->ox_id = ntfy->ox_id;
1599
726b8548 1600 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1601 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1602 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1603 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1604 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1605 }
1606 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1607 nack->u.isp24.status = ntfy->u.isp24.status;
1608 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1609 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1610 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1611 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1612 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1613 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1614 nack->u.isp24.srr_reject_code = srr_reject_code;
1615 nack->u.isp24.srr_reject_code_expl = srr_explan;
1616 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1617
1618 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1619 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1620 vha->vp_idx, nack->u.isp24.status);
1621
63163e06
HM		 1622 /* Memory Barrier */
1623 wmb();
2d70c103
NB		 1624 qla2x00_start_iocbs(vha, vha->req);
1625}
1626
1627/*
1628 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1629 */
1630static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
1631 struct abts_recv_from_24xx *abts, uint32_t status,
1632 bool ids_reversed)
1633{
1634 struct qla_hw_data *ha = vha->hw;
1635 struct abts_resp_to_24xx *resp;
1636 uint32_t f_ctl;
1637 uint8_t *p;
1638
1639 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1640 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1641 ha, abts, status);
1642
1643 /* Send marker if required */
1644 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1645 return;
1646
b6a029e1 1647 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1648 if (!resp) {
1649 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1650 "qla_target(%d): %s failed: unable to allocate "
1651 "request packet", vha->vp_idx, __func__);
1652 return;
1653 }
1654
1655 resp->entry_type = ABTS_RESP_24XX;
1656 resp->entry_count = 1;
1657 resp->nport_handle = abts->nport_handle;
1658 resp->vp_index = vha->vp_idx;
1659 resp->sof_type = abts->sof_type;
1660 resp->exchange_address = abts->exchange_address;
1661 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1662 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1663 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1664 F_CTL_SEQ_INITIATIVE);
1665 p = (uint8_t *)&f_ctl;
1666 resp->fcp_hdr_le.f_ctl[0] = *p++;
1667 resp->fcp_hdr_le.f_ctl[1] = *p++;
1668 resp->fcp_hdr_le.f_ctl[2] = *p;
1669 if (ids_reversed) {
1670 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1671 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1672 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1673 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1674 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1675 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1676 } else {
1677 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1678 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1679 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1680 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1681 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1682 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1683 }
1684 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1685 if (status == FCP_TMF_CMPL) {
1686 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1687 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1688 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1689 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1690 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1691 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1692 } else {
1693 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1694 resp->payload.ba_rjt.reason_code =
1695 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1696 /* Other bytes are zero */
1697 }
1698
0e8cd71c 1699 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1700
63163e06
HM		 1701 /* Memory Barrier */
1702 wmb();
2d70c103
NB		 1703 qla2x00_start_iocbs(vha, vha->req);
1704}
1705
1706/*
1707 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1708 */
1709static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1710 struct abts_resp_from_24xx_fw *entry)
1711{
1712 struct ctio7_to_24xx *ctio;
1713
1714 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1715 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
1716 /* Send marker if required */
1717 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
1718 return;
1719
b6a029e1 1720 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 1721 if (ctio == NULL) {
1722 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1723 "qla_target(%d): %s failed: unable to allocate "
1724 "request packet\n", vha->vp_idx, __func__);
1725 return;
1726 }
1727
1728 /*
1729 * We've got on entrance firmware's response on by us generated
1730 * ABTS response. So, in it ID fields are reversed.
1731 */
1732
1733 ctio->entry_type = CTIO_TYPE7;
1734 ctio->entry_count = 1;
1735 ctio->nport_handle = entry->nport_handle;
1736 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1737 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1738 ctio->vp_index = vha->vp_idx;
1739 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1740 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1741 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1742 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1743 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1744 CTIO7_FLAGS_TERMINATE);
33a5fcee 1745 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1746
63163e06
HM		 1747 /* Memory Barrier */
1748 wmb();
2d70c103
NB		 1749 qla2x00_start_iocbs(vha, vha->req);
1750
1751 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
1752 FCP_TMF_CMPL, true);
1753}
1754
8b2f5ff3
SN		 1755static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1756{
1757 struct qla_tgt_sess_op *op;
1758 struct qla_tgt_cmd *cmd;
8b631d87 1759 unsigned long flags;
8b2f5ff3 1760
8b631d87 1761 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1762 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1763 if (tag == op->atio.u.isp24.exchange_addr) {
1764 op->aborted = true;
8b631d87 1765 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1766 return 1;
1767 }
1768 }
1769
41dc529a
QT		 1770 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1771 if (tag == op->atio.u.isp24.exchange_addr) {
1772 op->aborted = true;
8b631d87 1773 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1774 return 1;
1775 }
1776 }
1777
8b2f5ff3
SN		 1778 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1779 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1780 cmd->aborted = 1;
8b631d87 1781 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1782 return 1;
1783 }
1784 }
8b631d87 1785 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1786
8b2f5ff3
SN		 1787 return 0;
1788}
1789
1790/* drop cmds for the given lun
1791 * XXX only looks for cmds on the port through which lun reset was recieved
1792 * XXX does not go through the list of other port (which may have cmds
1793 * for the same lun)
1794 */
1795static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1796 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1797{
1798 struct qla_tgt_sess_op *op;
1799 struct qla_tgt_cmd *cmd;
1800 uint32_t key;
8b631d87 1801 unsigned long flags;
8b2f5ff3
SN		 1802
1803 key = sid_to_key(s_id);
8b631d87 1804 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1805 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1806 uint32_t op_key;
f775bd14 1807 u64 op_lun;
8b2f5ff3
SN		 1808
1809 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1810 op_lun = scsilun_to_int(
1811 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1812 if (op_key == key && op_lun == lun)
1813 op->aborted = true;
1814 }
41dc529a
QT		 1815
1816 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1817 uint32_t op_key;
1818 u64 op_lun;
1819
1820 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1821 op_lun = scsilun_to_int(
1822 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1823 if (op_key == key && op_lun == lun)
1824 op->aborted = true;
1825 }
1826
8b2f5ff3
SN		 1827 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1828 uint32_t cmd_key;
f775bd14 1829 u64 cmd_lun;
8b2f5ff3
SN		 1830
1831 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1832 cmd_lun = scsilun_to_int(
1833 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1834 if (cmd_key == key && cmd_lun == lun)
193b50b9 1835 cmd->aborted = 1;
8b2f5ff3 1836 }
8b631d87 1837 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1838}
1839
2d70c103
NB		 1840/* ha->hardware_lock supposed to be held on entry */
1841static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1842 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1843{
1844 struct qla_hw_data *ha = vha->hw;
06e97b48 1845 struct se_session *se_sess = sess->se_sess;
2d70c103 1846 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 1847 struct qla_tgt_cmd *cmd;
06e97b48 1848 struct se_cmd *se_cmd;
2d70c103 1849 int rc;
06e97b48 1850 bool found_lun = false;
5d964837 1851 unsigned long flags;
06e97b48 1852
5d964837 1853 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
06e97b48 1854 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
649ee054 1855 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1856 found_lun = true;
1857 break;
1858 }
1859 }
5d964837 1860 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
06e97b48 1861
8b2f5ff3
SN		 1862 /* cmd not in LIO lists, look in qla list */
1863 if (!found_lun) {
1864 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1865 /* send TASK_ABORT response immediately */
1866 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
1867 return 0;
1868 } else {
1869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1870 "unable to find cmd in driver or LIO for tag 0x%x\n",
1871 abts->exchange_addr_to_abort);
1872 return -ENOENT;
1873 }
1874 }
2d70c103
NB		 1875
1876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1877 "qla_target(%d): task abort (tag=%d)\n",
1878 vha->vp_idx, abts->exchange_addr_to_abort);
1879
1880 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1881 if (mcmd == NULL) {
1882 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1883 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1884 vha->vp_idx, __func__);
1885 return -ENOMEM;
1886 }
1887 memset(mcmd, 0, sizeof(*mcmd));
1888
f775bd14 1889 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
2d70c103
NB		 1890 mcmd->sess = sess;
1891 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
80187f8e 1892 mcmd->reset_count = vha->hw->chip_reset;
be92fc3f 1893 mcmd->tmr_func = QLA_TGT_ABTS;
2d70c103 1894
f775bd14 1895 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, cmd->unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 1896 abts->exchange_addr_to_abort);
1897 if (rc != 0) {
1898 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1899 "qla_target(%d): tgt_ops->handle_tmr()"
1900 " failed: %d", vha->vp_idx, rc);
1901 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1902 return -EFAULT;
1903 }
1904
1905 return 0;
1906}
1907
1908/*
1909 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1910 */
1911static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1912 struct abts_recv_from_24xx *abts)
1913{
1914 struct qla_hw_data *ha = vha->hw;
5d964837 1915 struct fc_port *sess;
2d70c103
NB		 1916 uint32_t tag = abts->exchange_addr_to_abort;
1917 uint8_t s_id[3];
1918 int rc;
7560151b 1919 unsigned long flags;
2d70c103
NB		 1920
1921 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1923 "qla_target(%d): ABTS: Abort Sequence not "
1924 "supported\n", vha->vp_idx);
1925 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1926 return;
1927 }
1928
1929 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1931 "qla_target(%d): ABTS: Unknown Exchange "
1932 "Address received\n", vha->vp_idx);
1933 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1934 return;
1935 }
1936
1937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1938 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1939 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1940 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1941 le32_to_cpu(abts->fcp_hdr_le.parameter));
1942
1943 s_id[0] = abts->fcp_hdr_le.s_id[2];
1944 s_id[1] = abts->fcp_hdr_le.s_id[1];
1945 s_id[2] = abts->fcp_hdr_le.s_id[0];
1946
7560151b 1947 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1948 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1949 if (!sess) {
1950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1951 "qla_target(%d): task abort for non-existant session\n",
1952 vha->vp_idx);
0e8cd71c 1953 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1954 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1955
1956 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1957
2d70c103
NB		 1958 if (rc != 0) {
1959 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED,
1960 false);
1961 }
1962 return;
1963 }
7560151b
QT		 1964 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1965
2d70c103 1966
726b8548 1967 if (sess->deleted) {
e52a8b45
AP		 1968 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1969 return;
1970 }
1971
2d70c103
NB		 1972 rc = __qlt_24xx_handle_abts(vha, abts, sess);
1973 if (rc != 0) {
1974 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
1975 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
1976 vha->vp_idx, rc);
1977 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
1978 return;
1979 }
1980}
1981
1982/*
1983 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1984 */
1985static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
1986 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
1987{
1988 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
1989 struct ctio7_to_24xx *ctio;
33a5fcee 1990 uint16_t temp;
2d70c103
NB		 1991
1992 ql_dbg(ql_dbg_tgt, ha, 0xe008,
1993 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
1994 ha, atio, resp_code);
1995
1996 /* Send marker if required */
1997 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
1998 return;
1999
2000 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL);
2001 if (ctio == NULL) {
2002 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2003 "qla_target(%d): %s failed: unable to allocate "
2004 "request packet\n", ha->vp_idx, __func__);
2005 return;
2006 }
2007
2008 ctio->entry_type = CTIO_TYPE7;
2009 ctio->entry_count = 1;
2010 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2011 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2012 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2013 ctio->vp_index = ha->vp_idx;
2014 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2015 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2016 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2017 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2018 temp = (atio->u.isp24.attr << 9)|
2019 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2020 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2021 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2022 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2023 ctio->u.status1.scsi_status =
ad950360
BVA		 2024 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2025 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2026 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2027
63163e06
HM		 2028 /* Memory Barrier */
2029 wmb();
2d70c103
NB		 2030 qla2x00_start_iocbs(ha, ha->req);
2031}
2032
2033void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2034{
2035 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2036}
2037EXPORT_SYMBOL(qlt_free_mcmd);
2038
be25152c
QT		 2039/*
2040 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2041 * reacquire
2042 */
2043void qlt_send_resp_ctio(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
2044 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2045{
2046 struct atio_from_isp *atio = &cmd->atio;
2047 struct ctio7_to_24xx *ctio;
2048 uint16_t temp;
2049
2050 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2051 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2052 "sense_key=%02x, asc=%02x, ascq=%02x",
2053 vha, atio, scsi_status, sense_key, asc, ascq);
2054
2055 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2056 if (!ctio) {
2057 ql_dbg(ql_dbg_async, vha, 0x3067,
2058 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2059 vha->host_no, __func__);
2060 goto out;
2061 }
2062
2063 ctio->entry_type = CTIO_TYPE7;
2064 ctio->entry_count = 1;
2065 ctio->handle = QLA_TGT_SKIP_HANDLE;
2066 ctio->nport_handle = cmd->sess->loop_id;
2067 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2068 ctio->vp_index = vha->vp_idx;
2069 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2070 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2071 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2072 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2073 temp = (atio->u.isp24.attr << 9) |
2074 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2075 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2076 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2077 ctio->u.status1.ox_id = cpu_to_le16(temp);
2078 ctio->u.status1.scsi_status =
2079 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2080 ctio->u.status1.response_len = cpu_to_le16(18);
2081 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2082
2083 if (ctio->u.status1.residual != 0)
2084 ctio->u.status1.scsi_status |=
2085 cpu_to_le16(SS_RESIDUAL_UNDER);
2086
2087 /* Response code and sense key */
2088 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2089 (&ctio->u.status1.sense_data)[0]);
2090 /* Additional sense length */
2091 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2092 /* ASC and ASCQ */
2093 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2094 (&ctio->u.status1.sense_data)[3]);
2095
2096 /* Memory Barrier */
2097 wmb();
2098
2099 qla2x00_start_iocbs(vha, vha->req);
2100out:
2101 return;
2102}
2103
2d70c103
NB		 2104/* callback from target fabric module code */
2105void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2106{
2107 struct scsi_qla_host *vha = mcmd->sess->vha;
2108 struct qla_hw_data *ha = vha->hw;
2109 unsigned long flags;
2110
2111 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2112 "TM response mcmd (%p) status %#x state %#x",
2113 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2114
2115 spin_lock_irqsave(&ha->hardware_lock, flags);
b6a029e1 2116
3bb67df5 2117 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) {
b6a029e1 2118 /*
3bb67df5 2119 * Either the port is not online or this request was from
b6a029e1
AE		 2120 * previous life, just abort the processing.
2121 */
2122 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2123 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2124 vha->flags.online, qla2x00_reset_active(vha),
2125 mcmd->reset_count, ha->chip_reset);
b6a029e1
AE		 2126 ha->tgt.tgt_ops->free_mcmd(mcmd);
2127 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2128 return;
2129 }
2130
726b8548
QT		 2131 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2132 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2133 ELS_LOGO ||
2134 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2135 ELS_PRLO ||
2136 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2137 ELS_TPRLO) {
83548fe2 2138 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2139 "TM response logo %phC status %#x state %#x",
2140 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2141 mcmd->flags);
2142 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2143 } else {
2144 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
2145 0, 0, 0, 0, 0, 0);
2146 }
2147 } else {
d7236ac3 2148 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
2d70c103
NB		 2149 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
2150 mcmd->fc_tm_rsp, false);
2151 else
2152 qlt_24xx_send_task_mgmt_ctio(vha, mcmd,
2153 mcmd->fc_tm_rsp);
2154 }
2155 /*
2156 * Make the callback for ->free_mcmd() to queue_work() and invoke
2157 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2158 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2159 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2160 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2161 * qlt_xmit_tm_rsp() returns here..
2162 */
2163 ha->tgt.tgt_ops->free_mcmd(mcmd);
2164 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2165}
2166EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2167
2168/* No locks */
2169static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2170{
2171 struct qla_tgt_cmd *cmd = prm->cmd;
2172
2173 BUG_ON(cmd->sg_cnt == 0);
2174
2175 prm->sg = (struct scatterlist *)cmd->sg;
2176 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
2177 cmd->sg_cnt, cmd->dma_data_direction);
2178 if (unlikely(prm->seg_cnt == 0))
2179 goto out_err;
2180
2181 prm->cmd->sg_mapped = 1;
2182
f83adb61
QT		 2183 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2184 /*
2185 * If greater than four sg entries then we need to allocate
2186 * the continuation entries
2187 */
2188 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
2189 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
2190 prm->tgt->datasegs_per_cmd,
2191 prm->tgt->datasegs_per_cont);
2192 } else {
2193 /* DIF */
2194 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2195 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2196 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2197 prm->tot_dsds = prm->seg_cnt;
2198 } else
2199 prm->tot_dsds = prm->seg_cnt;
2200
2201 if (cmd->prot_sg_cnt) {
2202 prm->prot_sg = cmd->prot_sg;
2203 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev,
2204 cmd->prot_sg, cmd->prot_sg_cnt,
2205 cmd->dma_data_direction);
2206 if (unlikely(prm->prot_seg_cnt == 0))
2207 goto out_err;
2208
2209 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2210 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2211 /* Dif Bundling not support here */
2212 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2213 cmd->blk_sz);
2214 prm->tot_dsds += prm->prot_seg_cnt;
2215 } else
2216 prm->tot_dsds += prm->prot_seg_cnt;
2217 }
2218 }
2d70c103 2219
2d70c103
NB		 2220 return 0;
2221
2222out_err:
2223 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
2224 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2225 0, prm->cmd->sg_cnt);
2226 return -1;
2227}
2228
f9b6721a 2229static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103
NB		 2230{
2231 struct qla_hw_data *ha = vha->hw;
2232
f9b6721a
JE		 2233 if (!cmd->sg_mapped)
2234 return;
2235
2d70c103
NB		 2236 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
2237 cmd->sg_mapped = 0;
f83adb61
QT		 2238
2239 if (cmd->prot_sg_cnt)
2240 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
2241 cmd->dma_data_direction);
2242
d5ff0eed
JC		 2243 if (!cmd->ctx)
2244 return;
2245
f83adb61 2246 if (cmd->ctx_dsd_alloced)
d5ff0eed 2247 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2248
d5ff0eed 2249 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2250}
2251
2252static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
2253 uint32_t req_cnt)
2254{
d29fb736 2255 uint32_t cnt, cnt_in;
2d70c103
NB		 2256
2257 if (vha->req->cnt < (req_cnt + 2)) {
75554b68 2258 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
d29fb736 2259 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
2d70c103 2260
2d70c103
NB		 2261 if (vha->req->ring_index < cnt)
2262 vha->req->cnt = cnt - vha->req->ring_index;
2263 else
2264 vha->req->cnt = vha->req->length -
2265 (vha->req->ring_index - cnt);
2d70c103 2266
bc7095a9
AB		 2267 if (unlikely(vha->req->cnt < (req_cnt + 2))) {
2268 ql_dbg(ql_dbg_io, vha, 0x305a,
2269 "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",
2270 vha->vp_idx, vha->req->ring_index,
2271 vha->req->cnt, req_cnt, cnt, cnt_in,
2272 vha->req->length);
2273 return -EAGAIN;
2274 }
2d70c103 2275 }
bc7095a9 2276
2d70c103
NB		 2277 vha->req->cnt -= req_cnt;
2278
2279 return 0;
2280}
2281
2282/*
2283 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2284 */
2285static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha)
2286{
2287 /* Adjust ring index. */
2288 vha->req->ring_index++;
2289 if (vha->req->ring_index == vha->req->length) {
2290 vha->req->ring_index = 0;
2291 vha->req->ring_ptr = vha->req->ring;
2292 } else {
2293 vha->req->ring_ptr++;
2294 }
2295 return (cont_entry_t *)vha->req->ring_ptr;
2296}
2297
2298/* ha->hardware_lock supposed to be held on entry */
2299static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
2300{
2301 struct qla_hw_data *ha = vha->hw;
2302 uint32_t h;
2303
2304 h = ha->tgt.current_handle;
2305 /* always increment cmd handle */
2306 do {
2307 ++h;
8d93f550 2308 if (h > DEFAULT_OUTSTANDING_COMMANDS)
2d70c103
NB		 2309 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
2310 if (h == ha->tgt.current_handle) {
667024a3 2311 ql_dbg(ql_dbg_io, vha, 0x305b,
2d70c103
NB		 2312 "qla_target(%d): Ran out of "
2313 "empty cmd slots in ha %p\n", vha->vp_idx, ha);
2314 h = QLA_TGT_NULL_HANDLE;
2315 break;
2316 }
2317 } while ((h == QLA_TGT_NULL_HANDLE) ||
2318 (h == QLA_TGT_SKIP_HANDLE) ||
2319 (ha->tgt.cmds[h-1] != NULL));
2320
2321 if (h != QLA_TGT_NULL_HANDLE)
2322 ha->tgt.current_handle = h;
2323
2324 return h;
2325}
2326
2327/* ha->hardware_lock supposed to be held on entry */
2328static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
2329 struct scsi_qla_host *vha)
2330{
2331 uint32_t h;
2332 struct ctio7_to_24xx *pkt;
2333 struct qla_hw_data *ha = vha->hw;
2334 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2335 uint16_t temp;
2d70c103
NB		 2336
2337 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr;
2338 prm->pkt = pkt;
2339 memset(pkt, 0, sizeof(*pkt));
2340
2341 pkt->entry_type = CTIO_TYPE7;
2342 pkt->entry_count = (uint8_t)prm->req_cnt;
2343 pkt->vp_index = vha->vp_idx;
2344
2345 h = qlt_make_handle(vha);
2346 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2347 /*
2348 * CTIO type 7 from the firmware doesn't provide a way to
2349 * know the initiator's LOOP ID, hence we can't find
2350 * the session and, so, the command.
2351 */
2352 return -EAGAIN;
2353 } else
be25152c 2354 ha->tgt.cmds[h - 1] = prm->cmd;
2d70c103
NB		 2355
2356 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
2357 pkt->nport_handle = prm->cmd->loop_id;
ad950360 2358 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2359 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2360 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2361 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2362 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2363 temp = atio->u.isp24.attr << 9;
2364 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2365 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2366 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2367 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2368
2d70c103
NB		 2369 return 0;
2370}
2371
2372/*
2373 * ha->hardware_lock supposed to be held on entry. We have already made sure
2374 * that there is sufficient amount of request entries to not drop it.
2375 */
2376static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
2377 struct scsi_qla_host *vha)
2378{
2379 int cnt;
2380 uint32_t *dword_ptr;
2381 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2382
2383 /* Build continuation packets */
2384 while (prm->seg_cnt > 0) {
2385 cont_a64_entry_t *cont_pkt64 =
2386 (cont_a64_entry_t *)qlt_get_req_pkt(vha);
2387
2388 /*
2389 * Make sure that from cont_pkt64 none of
2390 * 64-bit specific fields used for 32-bit
2391 * addressing. Cast to (cont_entry_t *) for
2392 * that.
2393 */
2394
2395 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2396
2397 cont_pkt64->entry_count = 1;
2398 cont_pkt64->sys_define = 0;
2399
2400 if (enable_64bit_addressing) {
2401 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2402 dword_ptr =
2403 (uint32_t *)&cont_pkt64->dseg_0_address;
2404 } else {
2405 cont_pkt64->entry_type = CONTINUE_TYPE;
2406 dword_ptr =
2407 (uint32_t *)&((cont_entry_t *)
2408 cont_pkt64)->dseg_0_address;
2409 }
2410
2411 /* Load continuation entry data segments */
2412 for (cnt = 0;
2413 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
2414 cnt++, prm->seg_cnt--) {
2415 *dword_ptr++ =
2416 cpu_to_le32(pci_dma_lo32
2417 (sg_dma_address(prm->sg)));
2418 if (enable_64bit_addressing) {
2419 *dword_ptr++ =
2420 cpu_to_le32(pci_dma_hi32
2421 (sg_dma_address
2422 (prm->sg)));
2423 }
2424 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2425
2d70c103
NB		 2426 prm->sg = sg_next(prm->sg);
2427 }
2428 }
2429}
2430
2431/*
2432 * ha->hardware_lock supposed to be held on entry. We have already made sure
2433 * that there is sufficient amount of request entries to not drop it.
2434 */
2435static void qlt_load_data_segments(struct qla_tgt_prm *prm,
2436 struct scsi_qla_host *vha)
2437{
2438 int cnt;
2439 uint32_t *dword_ptr;
2440 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
2441 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2442
2d70c103
NB		 2443 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2444
2445 /* Setup packet address segment pointer */
2446 dword_ptr = pkt24->u.status0.dseg_0_address;
2447
2448 /* Set total data segment count */
2449 if (prm->seg_cnt)
2450 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2451
2452 if (prm->seg_cnt == 0) {
2453 /* No data transfer */
2454 *dword_ptr++ = 0;
2455 *dword_ptr = 0;
2456 return;
2457 }
2458
2459 /* If scatter gather */
2d70c103
NB		 2460
2461 /* Load command entry data segments */
2462 for (cnt = 0;
2463 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
2464 cnt++, prm->seg_cnt--) {
2465 *dword_ptr++ =
2466 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
2467 if (enable_64bit_addressing) {
2468 *dword_ptr++ =
2469 cpu_to_le32(pci_dma_hi32(
2470 sg_dma_address(prm->sg)));
2471 }
2472 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2473
2d70c103
NB		 2474 prm->sg = sg_next(prm->sg);
2475 }
2476
2477 qlt_load_cont_data_segments(prm, vha);
2478}
2479
2480static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2481{
2482 return cmd->bufflen > 0;
2483}
2484
be25152c
QT		 2485static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2486{
2487 struct qla_tgt_cmd *cmd;
2488 struct scsi_qla_host *vha;
2489
2490 /* asc 0x10=dif error */
2491 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2492 cmd = prm->cmd;
2493 vha = cmd->vha;
2494 /* ASCQ */
2495 switch (prm->sense_buffer[13]) {
2496 case 1:
83548fe2 2497 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2498 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2499 "se_cmd=%p tag[%x]",
2500 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2501 cmd->atio.u.isp24.exchange_addr);
2502 break;
2503 case 2:
83548fe2 2504 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2505 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2506 "se_cmd=%p tag[%x]",
2507 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2508 cmd->atio.u.isp24.exchange_addr);
2509 break;
2510 case 3:
83548fe2 2511 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2512 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2513 "se_cmd=%p tag[%x]",
2514 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2515 cmd->atio.u.isp24.exchange_addr);
2516 break;
2517 default:
83548fe2 2518 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2519 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2520 "se_cmd=%p tag[%x]",
2521 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2522 cmd->atio.u.isp24.exchange_addr);
2523 break;
2524 }
83548fe2 2525 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2526 }
2527}
2528
2d70c103
NB		 2529/*
2530 * Called without ha->hardware_lock held
2531 */
2532static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2533 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2534 uint32_t *full_req_cnt)
2535{
2536 struct qla_tgt *tgt = cmd->tgt;
2537 struct scsi_qla_host *vha = tgt->vha;
2538 struct qla_hw_data *ha = vha->hw;
2539 struct se_cmd *se_cmd = &cmd->se_cmd;
2540
2d70c103
NB		 2541 prm->cmd = cmd;
2542 prm->tgt = tgt;
2543 prm->rq_result = scsi_status;
2544 prm->sense_buffer = &cmd->sense_buffer[0];
2545 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2546 prm->sg = NULL;
2547 prm->seg_cnt = -1;
2548 prm->req_cnt = 1;
2549 prm->add_status_pkt = 0;
2550
2d70c103
NB		 2551 /* Send marker if required */
2552 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
2553 return -EFAULT;
2554
2d70c103
NB		 2555 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2556 if (qlt_pci_map_calc_cnt(prm) != 0)
2557 return -EAGAIN;
2558 }
2559
2560 *full_req_cnt = prm->req_cnt;
2561
2562 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2563 prm->residual = se_cmd->residual_count;
667024a3 2564 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
649ee054
BVA		 2565 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2566 prm->residual, se_cmd->tag,
2567 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2568 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2569 prm->rq_result |= SS_RESIDUAL_UNDER;
2570 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2571 prm->residual = se_cmd->residual_count;
667024a3 2572 ql_dbg(ql_dbg_io, vha, 0x305d,
649ee054
BVA		 2573 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2574 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2575 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2576 prm->rq_result |= SS_RESIDUAL_OVER;
2577 }
2578
2579 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2580 /*
2581 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2582 * ignored in *xmit_response() below
2583 */
2584 if (qlt_has_data(cmd)) {
2585 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
2586 (IS_FWI2_CAPABLE(ha) &&
2587 (prm->rq_result != 0))) {
2588 prm->add_status_pkt = 1;
2589 (*full_req_cnt)++;
2590 }
2591 }
2592 }
2593
2d70c103
NB		 2594 return 0;
2595}
2596
2597static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
2598 struct qla_tgt_cmd *cmd, int sending_sense)
2599{
2600 if (ha->tgt.enable_class_2)
2601 return 0;
2602
2603 if (sending_sense)
2604 return cmd->conf_compl_supported;
2605 else
2606 return ha->tgt.enable_explicit_conf &&
2607 cmd->conf_compl_supported;
2608}
2609
2d70c103
NB		 2610static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2611 struct qla_tgt_prm *prm)
2612{
2613 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2614 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2615 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
2d70c103 2616 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
ad950360 2617 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2618 CTIO7_FLAGS_EXPLICIT_CONFORM |
2619 CTIO7_FLAGS_CONFORM_REQ);
2620 }
2621 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2622 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2623 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2624 int i;
2625
2626 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
df2e32c5 2627 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
2d70c103
NB		 2628 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017,
2629 "Skipping EXPLICIT_CONFORM and "
2630 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2631 "non GOOD status\n");
2632 goto skip_explict_conf;
2633 }
ad950360 2634 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2635 CTIO7_FLAGS_EXPLICIT_CONFORM |
2636 CTIO7_FLAGS_CONFORM_REQ);
2637 }
2638skip_explict_conf:
2639 ctio->u.status1.flags &=
ad950360 2640 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2641 ctio->u.status1.flags |=
ad950360 2642 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2643 ctio->u.status1.scsi_status |=
ad950360 2644 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2645 ctio->u.status1.sense_length =
2646 cpu_to_le16(prm->sense_buffer_len);
2647 for (i = 0; i < prm->sense_buffer_len/4; i++)
2648 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2649 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2650
2651 qlt_print_dif_err(prm);
2652
2d70c103
NB		 2653 } else {
2654 ctio->u.status1.flags &=
ad950360 2655 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2656 ctio->u.status1.flags |=
ad950360 2657 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2658 ctio->u.status1.sense_length = 0;
2659 memset(ctio->u.status1.sense_data, 0,
2660 sizeof(ctio->u.status1.sense_data));
2661 }
2662
2663 /* Sense with len > 24, is it possible ??? */
2664}
2665
f83adb61
QT		 2666static inline int
2667qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2668{
f83adb61
QT		 2669 switch (se_cmd->prot_op) {
2670 case TARGET_PROT_DOUT_INSERT:
2671 case TARGET_PROT_DIN_STRIP:
2672 if (ql2xenablehba_err_chk >= 1)
2673 return 1;
2674 break;
2675 case TARGET_PROT_DOUT_PASS:
2676 case TARGET_PROT_DIN_PASS:
2677 if (ql2xenablehba_err_chk >= 2)
2678 return 1;
2679 break;
2680 case TARGET_PROT_DIN_INSERT:
2681 case TARGET_PROT_DOUT_STRIP:
2682 return 1;
2683 default:
2684 break;
2685 }
2686 return 0;
2687}
2688
be25152c
QT		 2689static inline int
2690qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2691{
2692 switch (se_cmd->prot_op) {
2693 case TARGET_PROT_DIN_INSERT:
2694 case TARGET_PROT_DOUT_INSERT:
2695 case TARGET_PROT_DIN_STRIP:
2696 case TARGET_PROT_DOUT_STRIP:
2697 case TARGET_PROT_DIN_PASS:
2698 case TARGET_PROT_DOUT_PASS:
2699 return 1;
2700 default:
2701 return 0;
2702 }
2703 return 0;
2704}
2705
f83adb61 2706/*
be25152c 2707 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2708 */
be25152c
QT		 2709static void
2710qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2711 uint16_t *pfw_prot_opts)
f83adb61 2712{
be25152c 2713 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2714 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2715 scsi_qla_host_t *vha = cmd->tgt->vha;
2716 struct qla_hw_data *ha = vha->hw;
2717 uint32_t t32 = 0;
f83adb61 2718
be25152c
QT		 2719 /*
2720 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2721 * have been immplemented by TCM, before AppTag is avail.
2722 * Look for modesense_handlers[]
2723 */
c7ee3bd4 2724 ctx->app_tag = 0;
f83adb61
QT		 2725 ctx->app_tag_mask[0] = 0x0;
2726 ctx->app_tag_mask[1] = 0x0;
2727
be25152c
QT		 2728 if (IS_PI_UNINIT_CAPABLE(ha)) {
2729 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2730 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2731 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2732 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2733 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2734 }
2735
2736 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2737
f83adb61
QT		 2738 switch (se_cmd->prot_type) {
2739 case TARGET_DIF_TYPE0_PROT:
2740 /*
be25152c
QT		 2741 * No check for ql2xenablehba_err_chk, as it
2742 * would be an I/O error if hba tag generation
2743 * is not done.
f83adb61
QT		 2744 */
2745 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2746 /* enable ALL bytes of the ref tag */
2747 ctx->ref_tag_mask[0] = 0xff;
2748 ctx->ref_tag_mask[1] = 0xff;
2749 ctx->ref_tag_mask[2] = 0xff;
2750 ctx->ref_tag_mask[3] = 0xff;
2751 break;
f83adb61 2752 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2753 /*
2754 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2755 * REF tag, and 16 bit app tag.
2756 */
2757 ctx->ref_tag = cpu_to_le32(lba);
2758 if (!qla_tgt_ref_mask_check(se_cmd) ||
2759 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2760 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2761 break;
2762 }
2763 /* enable ALL bytes of the ref tag */
2764 ctx->ref_tag_mask[0] = 0xff;
2765 ctx->ref_tag_mask[1] = 0xff;
2766 ctx->ref_tag_mask[2] = 0xff;
2767 ctx->ref_tag_mask[3] = 0xff;
2768 break;
f83adb61 2769 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2770 /*
2771 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2772 * tag has to match LBA in CDB + N
2773 */
2774 ctx->ref_tag = cpu_to_le32(lba);
2775 if (!qla_tgt_ref_mask_check(se_cmd) ||
2776 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2777 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2778 break;
2779 }
2780 /* enable ALL bytes of the ref tag */
2781 ctx->ref_tag_mask[0] = 0xff;
2782 ctx->ref_tag_mask[1] = 0xff;
2783 ctx->ref_tag_mask[2] = 0xff;
2784 ctx->ref_tag_mask[3] = 0xff;
2785 break;
f83adb61 2786 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2787 /* For TYPE 3 protection: 16 bit GUARD only */
2788 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2789 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2790 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2791 break;
f83adb61
QT		 2792 }
2793}
2794
f83adb61
QT		 2795static inline int
2796qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
2797{
2798 uint32_t *cur_dsd;
f83adb61
QT		 2799 uint32_t transfer_length = 0;
2800 uint32_t data_bytes;
2801 uint32_t dif_bytes;
2802 uint8_t bundling = 1;
2803 uint8_t *clr_ptr;
2804 struct crc_context *crc_ctx_pkt = NULL;
2805 struct qla_hw_data *ha;
2806 struct ctio_crc2_to_fw *pkt;
2807 dma_addr_t crc_ctx_dma;
2808 uint16_t fw_prot_opts = 0;
2809 struct qla_tgt_cmd *cmd = prm->cmd;
2810 struct se_cmd *se_cmd = &cmd->se_cmd;
2811 uint32_t h;
2812 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2813 struct qla_tc_param tc;
c7ee3bd4 2814 uint16_t t16;
f83adb61 2815
f83adb61
QT		 2816 ha = vha->hw;
2817
2818 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr;
2819 prm->pkt = pkt;
2820 memset(pkt, 0, sizeof(*pkt));
2821
2822 ql_dbg(ql_dbg_tgt, vha, 0xe071,
2823 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
2824 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op,
2825 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2826
2827 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2828 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2829 bundling = 0;
2830
2831 /* Compute dif len and adjust data len to incude protection */
2832 data_bytes = cmd->bufflen;
2833 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2834
2835 switch (se_cmd->prot_op) {
2836 case TARGET_PROT_DIN_INSERT:
2837 case TARGET_PROT_DOUT_STRIP:
2838 transfer_length = data_bytes;
be25152c
QT		 2839 if (cmd->prot_sg_cnt)
2840 data_bytes += dif_bytes;
f83adb61 2841 break;
f83adb61
QT		 2842 case TARGET_PROT_DIN_STRIP:
2843 case TARGET_PROT_DOUT_INSERT:
2844 case TARGET_PROT_DIN_PASS:
2845 case TARGET_PROT_DOUT_PASS:
2846 transfer_length = data_bytes + dif_bytes;
2847 break;
f83adb61
QT		 2848 default:
2849 BUG();
2850 break;
2851 }
2852
2853 if (!qlt_hba_err_chk_enabled(se_cmd))
2854 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2855 /* HBA error checking enabled */
2856 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2857 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2858 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2859 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2860 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2861 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2862 }
2863
2864 switch (se_cmd->prot_op) {
2865 case TARGET_PROT_DIN_INSERT:
2866 case TARGET_PROT_DOUT_INSERT:
2867 fw_prot_opts |= PO_MODE_DIF_INSERT;
2868 break;
2869 case TARGET_PROT_DIN_STRIP:
2870 case TARGET_PROT_DOUT_STRIP:
2871 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2872 break;
2873 case TARGET_PROT_DIN_PASS:
2874 case TARGET_PROT_DOUT_PASS:
2875 fw_prot_opts |= PO_MODE_DIF_PASS;
2876 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2877 break;
2878 default:/* Normal Request */
2879 fw_prot_opts |= PO_MODE_DIF_PASS;
2880 break;
2881 }
2882
f83adb61
QT		 2883 /* ---- PKT ---- */
2884 /* Update entry type to indicate Command Type CRC_2 IOCB */
2885 pkt->entry_type = CTIO_CRC2;
2886 pkt->entry_count = 1;
2887 pkt->vp_index = vha->vp_idx;
2888
2889 h = qlt_make_handle(vha);
2890 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2891 /*
2892 * CTIO type 7 from the firmware doesn't provide a way to
2893 * know the initiator's LOOP ID, hence we can't find
2894 * the session and, so, the command.
2895 */
2896 return -EAGAIN;
2897 } else
2898 ha->tgt.cmds[h-1] = prm->cmd;
2899
f83adb61 2900 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
be25152c 2901 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2902 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2903 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2904 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2905 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2906 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2907
2908 /* silence compile warning */
2909 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2910 pkt->ox_id = cpu_to_le16(t16);
2911
2912 t16 = (atio->u.isp24.attr << 9);
2913 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2914 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2915
2916 /* Set transfer direction */
2917 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2918 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2919 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2920 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2921
f83adb61
QT		 2922 pkt->dseg_count = prm->tot_dsds;
2923 /* Fibre channel byte count */
2924 pkt->transfer_length = cpu_to_le32(transfer_length);
2925
f83adb61
QT		 2926 /* ----- CRC context -------- */
2927
2928 /* Allocate CRC context from global pool */
2929 crc_ctx_pkt = cmd->ctx =
2930 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2931
2932 if (!crc_ctx_pkt)
2933 goto crc_queuing_error;
2934
2935 /* Zero out CTX area. */
2936 clr_ptr = (uint8_t *)crc_ctx_pkt;
2937 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2938
2939 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2940 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2941
2942 /* Set handle */
2943 crc_ctx_pkt->handle = pkt->handle;
2944
be25152c 2945 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 2946
2947 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2948 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2949 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2950
f83adb61
QT		 2951 if (!bundling) {
2952 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2953 } else {
2954 /*
2955 * Configure Bundling if we need to fetch interlaving
2956 * protection PCI accesses
2957 */
2958 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2959 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2960 crc_ctx_pkt->u.bundling.dseg_count =
2961 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2962 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2963 }
2964
2965 /* Finish the common fields of CRC pkt */
2966 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2967 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
2968 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 2969 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 2970
be25152c
QT		 2971 memset((uint8_t *)&tc, 0 , sizeof(tc));
2972 tc.vha = vha;
2973 tc.blk_sz = cmd->blk_sz;
2974 tc.bufflen = cmd->bufflen;
2975 tc.sg = cmd->sg;
2976 tc.prot_sg = cmd->prot_sg;
2977 tc.ctx = crc_ctx_pkt;
2978 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 2979
2980 /* Walks data segments */
ad950360 2981 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 2982
2983 if (!bundling && prm->prot_seg_cnt) {
2984 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 2985 prm->tot_dsds, &tc))
f83adb61
QT		 2986 goto crc_queuing_error;
2987 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 2988 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 2989 goto crc_queuing_error;
2990
2991 if (bundling && prm->prot_seg_cnt) {
2992 /* Walks dif segments */
c7ee3bd4 2993 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 2994
2995 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
2996 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 2997 prm->prot_seg_cnt, &tc))
f83adb61
QT		 2998 goto crc_queuing_error;
2999 }
3000 return QLA_SUCCESS;
3001
3002crc_queuing_error:
3003 /* Cleanup will be performed by the caller */
be25152c 3004 vha->hw->tgt.cmds[h - 1] = NULL;
f83adb61
QT		 3005
3006 return QLA_FUNCTION_FAILED;
3007}
3008
2d70c103
NB		 3009/*
3010 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3011 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3012 */
3013int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3014 uint8_t scsi_status)
3015{
3016 struct scsi_qla_host *vha = cmd->vha;
3017 struct qla_hw_data *ha = vha->hw;
3018 struct ctio7_to_24xx *pkt;
3019 struct qla_tgt_prm prm;
3020 uint32_t full_req_cnt = 0;
3021 unsigned long flags = 0;
3022 int res;
3023
a6ca8878 3024 spin_lock_irqsave(&ha->hardware_lock, flags);
726b8548 3025 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3026 cmd->state = QLA_TGT_STATE_PROCESSED;
3027 if (cmd->sess->logout_completed)
3028 /* no need to terminate. FW already freed exchange. */
3029 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3030 else
a07100e0 3031 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
a6ca8878
AP		 3032 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3033 return 0;
3034 }
3035 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3036
2d70c103 3037 memset(&prm, 0, sizeof(prm));
2d70c103
NB		 3038
3039 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
f83adb61
QT		 3040 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n",
3041 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3042 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
3043 &cmd->se_cmd);
2d70c103
NB		 3044
3045 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3046 &full_req_cnt);
3047 if (unlikely(res != 0)) {
2d70c103
NB		 3048 return res;
3049 }
3050
3051 spin_lock_irqsave(&ha->hardware_lock, flags);
3052
ce1025cd
HM		 3053 if (xmit_type == QLA_TGT_XMIT_STATUS)
3054 vha->tgt_counters.core_qla_snd_status++;
3055 else
3056 vha->tgt_counters.core_qla_que_buf++;
3057
ec7193e2 3058 if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) {
b6a029e1 3059 /*
3bb67df5 3060 * Either the port is not online or this request was from
b6a029e1
AE		 3061 * previous life, just abort the processing.
3062 */
3063 cmd->state = QLA_TGT_STATE_PROCESSED;
3064 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3065 ql_dbg(ql_dbg_async, vha, 0xe101,
3bb67df5
DKU		 3066 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3067 vha->flags.online, qla2x00_reset_active(vha),
3068 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 3069 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3070 return 0;
3071 }
3072
2d70c103
NB		 3073 /* Does F/W have an IOCBs for this request */
3074 res = qlt_check_reserve_free_req(vha, full_req_cnt);
3075 if (unlikely(res))
3076 goto out_unmap_unlock;
3077
f83adb61
QT		 3078 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
3079 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3080 else
3081 res = qlt_24xx_build_ctio_pkt(&prm, vha);
810e30bc
QT		 3082 if (unlikely(res != 0)) {
3083 vha->req->cnt += full_req_cnt;
2d70c103 3084 goto out_unmap_unlock;
810e30bc 3085 }
2d70c103
NB		 3086
3087 pkt = (struct ctio7_to_24xx *)prm.pkt;
3088
3089 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3090 pkt->u.status0.flags |=
ad950360 3091 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3092 CTIO7_FLAGS_STATUS_MODE_0);
3093
f83adb61
QT		 3094 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3095 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 3096
3097 if (prm.add_status_pkt == 0) {
3098 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3099 pkt->u.status0.scsi_status =
3100 cpu_to_le16(prm.rq_result);
3101 pkt->u.status0.residual =
3102 cpu_to_le32(prm.residual);
ad950360 3103 pkt->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 3104 CTIO7_FLAGS_SEND_STATUS);
3105 if (qlt_need_explicit_conf(ha, cmd, 0)) {
3106 pkt->u.status0.flags |=
ad950360 3107 cpu_to_le16(
2d70c103
NB		 3108 CTIO7_FLAGS_EXPLICIT_CONFORM |
3109 CTIO7_FLAGS_CONFORM_REQ);
3110 }
3111 }
3112
3113 } else {
3114 /*
3115 * We have already made sure that there is sufficient
3116 * amount of request entries to not drop HW lock in
3117 * req_pkt().
3118 */
3119 struct ctio7_to_24xx *ctio =
3120 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
3121
667024a3
AE		 3122 ql_dbg(ql_dbg_io, vha, 0x305e,
3123 "Building additional status packet 0x%p.\n",
3124 ctio);
2d70c103 3125
f83adb61
QT		 3126 /*
3127 * T10Dif: ctio_crc2_to_fw overlay ontop of
3128 * ctio7_to_24xx
3129 */
2d70c103 3130 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3131 /* reset back to CTIO7 */
2d70c103 3132 ctio->entry_count = 1;
f83adb61 3133 ctio->entry_type = CTIO_TYPE7;
2d70c103 3134 ctio->dseg_count = 0;
ad950360 3135 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3136 CTIO7_FLAGS_DATA_IN);
3137
3138 /* Real finish is ctio_m1's finish */
3139 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3140 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3141 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3142
3143 /* qlt_24xx_init_ctio_to_isp will correct
3144 * all neccessary fields that's part of CTIO7.
3145 * There should be no residual of CTIO-CRC2 data.
3146 */
2d70c103
NB		 3147 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3148 &prm);
3149 pr_debug("Status CTIO7: %p\n", ctio);
3150 }
3151 } else
3152 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3153
3154
3155 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3156 cmd->cmd_sent_to_fw = 1;
2d70c103 3157
63163e06
HM		 3158 /* Memory Barrier */
3159 wmb();
2d70c103
NB		 3160 qla2x00_start_iocbs(vha, vha->req);
3161 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3162
3163 return 0;
3164
3165out_unmap_unlock:
f9b6721a 3166 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3167 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3168
3169 return res;
3170}
3171EXPORT_SYMBOL(qlt_xmit_response);
3172
3173int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3174{
3175 struct ctio7_to_24xx *pkt;
3176 struct scsi_qla_host *vha = cmd->vha;
3177 struct qla_hw_data *ha = vha->hw;
3178 struct qla_tgt *tgt = cmd->tgt;
3179 struct qla_tgt_prm prm;
3180 unsigned long flags;
3181 int res = 0;
3182
3183 memset(&prm, 0, sizeof(prm));
3184 prm.cmd = cmd;
3185 prm.tgt = tgt;
3186 prm.sg = NULL;
3187 prm.req_cnt = 1;
3188
3189 /* Send marker if required */
3190 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
3191 return -EIO;
3192
2d70c103
NB		 3193 /* Calculate number of entries and segments required */
3194 if (qlt_pci_map_calc_cnt(&prm) != 0)
3195 return -EAGAIN;
3196
3197 spin_lock_irqsave(&ha->hardware_lock, flags);
3198
ec7193e2 3199 if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
726b8548 3200 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3201 /*
3bb67df5 3202 * Either the port is not online or this request was from
b6a029e1
AE		 3203 * previous life, just abort the processing.
3204 */
3205 cmd->state = QLA_TGT_STATE_NEED_DATA;
3206 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3207 ql_dbg(ql_dbg_async, vha, 0xe102,
3bb67df5
DKU		 3208 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3209 vha->flags.online, qla2x00_reset_active(vha),
3210 cmd->reset_count, ha->chip_reset);
b6a029e1
AE		 3211 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3212 return 0;
3213 }
3214
2d70c103
NB		 3215 /* Does F/W have an IOCBs for this request */
3216 res = qlt_check_reserve_free_req(vha, prm.req_cnt);
3217 if (res != 0)
3218 goto out_unlock_free_unmap;
f83adb61
QT		 3219 if (cmd->se_cmd.prot_op)
3220 res = qlt_build_ctio_crc2_pkt(&prm, vha);
3221 else
3222 res = qlt_24xx_build_ctio_pkt(&prm, vha);
2d70c103 3223
810e30bc
QT		 3224 if (unlikely(res != 0)) {
3225 vha->req->cnt += prm.req_cnt;
2d70c103 3226 goto out_unlock_free_unmap;
810e30bc
QT		 3227 }
3228
2d70c103 3229 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3230 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3231 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3232
3233 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
3234 qlt_load_data_segments(&prm, vha);
2d70c103
NB		 3235
3236 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3237 cmd->cmd_sent_to_fw = 1;
2d70c103 3238
63163e06
HM		 3239 /* Memory Barrier */
3240 wmb();
2d70c103
NB		 3241 qla2x00_start_iocbs(vha, vha->req);
3242 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3243
3244 return res;
3245
3246out_unlock_free_unmap:
f9b6721a 3247 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3248 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3249
3250 return res;
3251}
3252EXPORT_SYMBOL(qlt_rdy_to_xfer);
3253
f83adb61
QT		 3254
3255/*
be25152c 3256 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3257 */
be25152c 3258static void
f83adb61 3259qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
be25152c 3260 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3261{
3262 uint8_t *ap = &sts->actual_dif[0];
3263 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3264 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3265 uint8_t scsi_status, sense_key, asc, ascq;
3266 unsigned long flags;
f83adb61 3267
be25152c 3268 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3269
be25152c
QT		 3270 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3271 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3272 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3273
be25152c
QT		 3274 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3275 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3276 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3277
be25152c
QT		 3278 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3279 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3280
be25152c 3281 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3282
be25152c
QT		 3283 /* check appl tag */
3284 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3285 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3286 "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]",
3287 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3288 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3289 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3290 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3291
3292 cmd->dif_err_code = DIF_ERR_APP;
3293 scsi_status = SAM_STAT_CHECK_CONDITION;
3294 sense_key = ABORTED_COMMAND;
3295 asc = 0x10;
3296 ascq = 0x2;
f83adb61
QT		 3297 }
3298
3299 /* check ref tag */
be25152c 3300 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3301 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3302 "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] ",
3303 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3304 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3305 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3306 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3307
3308 cmd->dif_err_code = DIF_ERR_REF;
3309 scsi_status = SAM_STAT_CHECK_CONDITION;
3310 sense_key = ABORTED_COMMAND;
3311 asc = 0x10;
3312 ascq = 0x3;
f83adb61
QT		 3313 goto out;
3314 }
3315
be25152c
QT		 3316 /* check guard */
3317 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3318 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3319 "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]",
3320 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3321 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3322 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3323 cmd->atio.u.isp24.fcp_hdr.ox_id);
3324
be25152c
QT		 3325 cmd->dif_err_code = DIF_ERR_GRD;
3326 scsi_status = SAM_STAT_CHECK_CONDITION;
3327 sense_key = ABORTED_COMMAND;
3328 asc = 0x10;
3329 ascq = 0x1;
f83adb61
QT		 3330 }
3331out:
be25152c
QT		 3332 switch (cmd->state) {
3333 case QLA_TGT_STATE_NEED_DATA:
3334 /* handle_data will load DIF error code */
3335 cmd->state = QLA_TGT_STATE_DATA_IN;
3336 vha->hw->tgt.tgt_ops->handle_data(cmd);
3337 break;
3338 default:
3339 spin_lock_irqsave(&cmd->cmd_lock, flags);
3340 if (cmd->aborted) {
3341 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3342 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3343 break;
3344 }
3345 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3346
be25152c
QT		 3347 qlt_send_resp_ctio(vha, cmd, scsi_status, sense_key, asc, ascq);
3348 /* assume scsi status gets out on the wire.
3349 * Will not wait for completion.
3350 */
3351 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3352 break;
3353 }
3354}
f83adb61 3355
a6ca8878
AP		 3356/* If hardware_lock held on entry, might drop it, then reaquire */
3357/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3358static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3359 struct imm_ntfy_from_isp *ntfy)
3360{
3361 struct nack_to_isp *nack;
3362 struct qla_hw_data *ha = vha->hw;
3363 request_t *pkt;
3364 int ret = 0;
3365
3366 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3367 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3368
ec7193e2 3369 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3370 if (pkt == NULL) {
3371 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3372 "qla_target(%d): %s failed: unable to allocate "
3373 "request packet\n", vha->vp_idx, __func__);
3374 return -ENOMEM;
3375 }
3376
3377 pkt->entry_type = NOTIFY_ACK_TYPE;
3378 pkt->entry_count = 1;
4f060736 3379 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3380
3381 nack = (struct nack_to_isp *)pkt;
3382 nack->ox_id = ntfy->ox_id;
3383
3384 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3385 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3386 nack->u.isp24.flags = ntfy->u.isp24.flags &
3387 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3388 }
3389
3390 /* terminate */
3391 nack->u.isp24.flags |=
3392 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3393
3394 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3395 nack->u.isp24.status = ntfy->u.isp24.status;
3396 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3397 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3398 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3399 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3400 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3401 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3402
3403 qla2x00_start_iocbs(vha, vha->req);
3404 return ret;
3405}
3406
3407static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3408 struct imm_ntfy_from_isp *imm, int ha_locked)
3409{
3410 unsigned long flags = 0;
3411 int rc;
3412
3413 if (qlt_issue_marker(vha, ha_locked) < 0)
3414 return;
3415
3416 if (ha_locked) {
3417 rc = __qlt_send_term_imm_notif(vha, imm);
3418
3419#if 0 /* Todo */
3420 if (rc == -ENOMEM)
3421 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3422#else
3423 if (rc) {
3424 }
a6ca8878
AP		 3425#endif
3426 goto done;
3427 }
3428
3429 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3430 rc = __qlt_send_term_imm_notif(vha, imm);
3431
3432#if 0 /* Todo */
3433 if (rc == -ENOMEM)
3434 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3435#endif
3436
3437done:
3438 if (!ha_locked)
3439 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3440}
3441
83548fe2
QT		 3442/*
3443 * If hardware_lock held on entry, might drop it, then reaquire
3444 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3445 */
2d70c103
NB		 3446static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
3447 struct qla_tgt_cmd *cmd,
3448 struct atio_from_isp *atio)
3449{
3450 struct ctio7_to_24xx *ctio24;
3451 struct qla_hw_data *ha = vha->hw;
3452 request_t *pkt;
3453 int ret = 0;
33a5fcee 3454 uint16_t temp;
2d70c103 3455
83548fe2 3456 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3457
b6a029e1 3458 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
2d70c103
NB		 3459 if (pkt == NULL) {
3460 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3461 "qla_target(%d): %s failed: unable to allocate "
3462 "request packet\n", vha->vp_idx, __func__);
3463 return -ENOMEM;
3464 }
3465
3466 if (cmd != NULL) {
3467 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3468 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3469 "qla_target(%d): Terminating cmd %p with "
3470 "incorrect state %d\n", vha->vp_idx, cmd,
3471 cmd->state);
3472 } else
3473 ret = 1;
3474 }
3475
ce1025cd 3476 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3477 pkt->entry_count = 1;
3478 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3479
3480 ctio24 = (struct ctio7_to_24xx *)pkt;
3481 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3482 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3483 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3484 ctio24->vp_index = vha->vp_idx;
3485 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3486 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3487 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3488 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3489 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3490 CTIO7_FLAGS_TERMINATE;
3491 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3492 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3493 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3494
3495 /* Most likely, it isn't needed */
3496 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3497 &atio->u.isp24.fcp_cmnd.add_cdb[
3498 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3499 if (ctio24->u.status1.residual != 0)
3500 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3501
63163e06
HM		 3502 /* Memory Barrier */
3503 wmb();
2d70c103
NB		 3504 qla2x00_start_iocbs(vha, vha->req);
3505 return ret;
3506}
3507
3508static void qlt_send_term_exchange(struct scsi_qla_host *vha,
a07100e0
QT		 3509 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3510 int ul_abort)
2d70c103 3511{
6bc85dd5 3512 unsigned long flags = 0;
2d70c103
NB		 3513 int rc;
3514
3515 if (qlt_issue_marker(vha, ha_locked) < 0)
3516 return;
3517
3518 if (ha_locked) {
3519 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3520 if (rc == -ENOMEM)
3521 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3522 goto done;
3523 }
3524 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3525 rc = __qlt_send_term_exchange(vha, cmd, atio);
33e79977
QT		 3526 if (rc == -ENOMEM)
3527 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3528
2d70c103 3529done:
a07100e0 3530 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3531 if (cmd->sg_mapped)
3532 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3533 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3534 }
6bc85dd5
HM		 3535
3536 if (!ha_locked)
3537 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3538
7b898542 3539 return;
2d70c103
NB		 3540}
3541
33e79977
QT		 3542static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3543{
3544 struct list_head free_list;
3545 struct qla_tgt_cmd *cmd, *tcmd;
3546
3547 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3548 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3549
3550 cmd = tcmd = NULL;
3551 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3552 INIT_LIST_HEAD(&free_list);
3553 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3554
3555 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3556 list_del(&cmd->cmd_list);
3557 /* This cmd was never sent to TCM. There is no need
3558 * to schedule free or call free_cmd
3559 */
3560 qlt_free_cmd(cmd);
3561 vha->hw->tgt.num_qfull_cmds_alloc--;
3562 }
3563 }
3564 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3565}
3566
3567static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3568{
3569 uint32_t total_leaked;
3570
3571 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3572
3573 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3574 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3575
3576 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3577 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3578 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3579
3580 if (IS_P3P_TYPE(vha->hw))
3581 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3582 else
3583 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3584 qla2xxx_wake_dpc(vha);
3585 }
3586
3587}
3588
a07100e0 3589int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3590{
3591 struct qla_tgt *tgt = cmd->tgt;
3592 struct scsi_qla_host *vha = tgt->vha;
3593 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3594 unsigned long flags;
7359df25
AP		 3595
3596 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3597 "qla_target(%d): terminating exchange for aborted cmd=%p "
3598 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3599 se_cmd->tag);
3600
a07100e0
QT		 3601 spin_lock_irqsave(&cmd->cmd_lock, flags);
3602 if (cmd->aborted) {
3603 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3604 /*
3605 * It's normal to see 2 calls in this path:
3606 * 1) XFER Rdy completion + CMD_T_ABORT
3607 * 2) TCM TMR - drain_state_list
3608 */
83548fe2
QT		 3609 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3610 "multiple abort. %p transport_state %x, t_state %x, "
3611 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3612 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3613 return EIO;
3614 }
193b50b9 3615 cmd->aborted = 1;
1eb42f96 3616 cmd->trc_flags |= TRC_ABORT;
a07100e0 3617 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3618
a07100e0
QT		 3619 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1);
3620 return 0;
7359df25
AP		 3621}
3622EXPORT_SYMBOL(qlt_abort_cmd);
3623
2d70c103
NB		 3624void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3625{
5d964837 3626 struct fc_port *sess = cmd->sess;
51a07f84 3627
f83adb61
QT		 3628 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3629 "%s: se_cmd[%p] ox_id %04x\n",
3630 __func__, &cmd->se_cmd,
3631 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3632
e07f8f65
SK		 3633 BUG_ON(cmd->cmd_in_wq);
3634
a07100e0
QT		 3635 if (cmd->sg_mapped)
3636 qlt_unmap_sg(cmd->vha, cmd);
3637
33e79977
QT		 3638 if (!cmd->q_full)
3639 qlt_decr_num_pend_cmds(cmd->vha);
3640
f83adb61 3641 BUG_ON(cmd->sg_mapped);
e07f8f65 3642 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3643 if (unlikely(cmd->free_sg))
3644 kfree(cmd->sg);
51a07f84
NB		 3645
3646 if (!sess || !sess->se_sess) {
3647 WARN_ON(1);
3648 return;
3649 }
e07f8f65 3650 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3651 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3652}
3653EXPORT_SYMBOL(qlt_free_cmd);
3654
2d70c103
NB		 3655/*
3656 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3657 */
3658static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
3659 struct qla_tgt_cmd *cmd, uint32_t status)
3660{
3661 int term = 0;
3662
be25152c 3663 if (cmd->se_cmd.prot_op)
83548fe2 3664 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3665 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3666 "se_cmd=%p tag[%x] op %#x/%s",
3667 cmd->lba, cmd->lba,
3668 cmd->num_blks, &cmd->se_cmd,
3669 cmd->atio.u.isp24.exchange_addr,
3670 cmd->se_cmd.prot_op,
3671 prot_op_str(cmd->se_cmd.prot_op));
3672
2d70c103
NB		 3673 if (ctio != NULL) {
3674 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3675 term = !(c->flags &
ad950360 3676 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3677 } else
3678 term = 1;
3679
3680 if (term)
a07100e0 3681 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3682
3683 return term;
3684}
3685
3686/* ha->hardware_lock supposed to be held on entry */
3687static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
3688 uint32_t handle)
3689{
3690 struct qla_hw_data *ha = vha->hw;
3691
3692 handle--;
3693 if (ha->tgt.cmds[handle] != NULL) {
3694 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
3695 ha->tgt.cmds[handle] = NULL;
3696 return cmd;
3697 } else
3698 return NULL;
3699}
3700
3701/* ha->hardware_lock supposed to be held on entry */
3702static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
3703 uint32_t handle, void *ctio)
3704{
3705 struct qla_tgt_cmd *cmd = NULL;
3706
3707 /* Clear out internal marks */
3708 handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
3709 CTIO_INTERMEDIATE_HANDLE_MARK);
3710
3711 if (handle != QLA_TGT_NULL_HANDLE) {
667024a3 3712 if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
2d70c103 3713 return NULL;
667024a3 3714
2d70c103 3715 /* handle-1 is actually used */
8d93f550 3716 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
2d70c103
NB		 3717 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3718 "qla_target(%d): Wrong handle %x received\n",
3719 vha->vp_idx, handle);
3720 return NULL;
3721 }
3722 cmd = qlt_get_cmd(vha, handle);
3723 if (unlikely(cmd == NULL)) {
3724 ql_dbg(ql_dbg_tgt, vha, 0xe053,
3725 "qla_target(%d): Suspicious: unable to "
3726 "find the command with handle %x\n", vha->vp_idx,
3727 handle);
3728 return NULL;
3729 }
3730 } else if (ctio != NULL) {
3731 /* We can't get loop ID from CTIO7 */
3732 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3733 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3734 "support NULL handles\n", vha->vp_idx);
3735 return NULL;
3736 }
3737
3738 return cmd;
3739}
3740
c0cb4496
AE		 3741/* hardware_lock should be held by caller. */
3742static void
3743qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3744{
3745 struct qla_hw_data *ha = vha->hw;
3746 uint32_t handle;
3747
3748 if (cmd->sg_mapped)
3749 qlt_unmap_sg(vha, cmd);
3750
3751 handle = qlt_make_handle(vha);
3752
3753 /* TODO: fix debug message type and ids. */
3754 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3755 ql_dbg(ql_dbg_io, vha, 0xff00,
3756 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
3757 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3758 cmd->write_data_transferred = 0;
3759 cmd->state = QLA_TGT_STATE_DATA_IN;
3760
3761 ql_dbg(ql_dbg_io, vha, 0xff01,
3762 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
3763
3764 ha->tgt.tgt_ops->handle_data(cmd);
3765 return;
c0cb4496
AE		 3766 } else {
3767 ql_dbg(ql_dbg_io, vha, 0xff03,
3768 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
3769 cmd->state);
3770 dump_stack();
3771 }
3772
1eb42f96 3773 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3774 ha->tgt.tgt_ops->free_cmd(cmd);
3775}
3776
3777void
3778qlt_host_reset_handler(struct qla_hw_data *ha)
3779{
3780 struct qla_tgt_cmd *cmd;
3781 unsigned long flags;
3782 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
3783 scsi_qla_host_t *vha = NULL;
3784 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
3785 uint32_t i;
3786
3787 if (!base_vha->hw->tgt.tgt_ops)
3788 return;
3789
3790 if (!tgt || qla_ini_mode_enabled(base_vha)) {
3791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
3792 "Target mode disabled\n");
3793 return;
3794 }
3795
3796 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
3797 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
3798 base_vha->dpc_flags);
3799
3800 spin_lock_irqsave(&ha->hardware_lock, flags);
3801 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
3802 cmd = qlt_get_cmd(base_vha, i);
3803 if (!cmd)
3804 continue;
3805 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
3806 vha = cmd->vha;
3807 qlt_abort_cmd_on_host_reset(vha, cmd);
3808 }
3809 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3810}
3811
3812
2d70c103
NB		 3813/*
3814 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3815 */
3816static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
3817 uint32_t status, void *ctio)
3818{
3819 struct qla_hw_data *ha = vha->hw;
3820 struct se_cmd *se_cmd;
2d70c103
NB		 3821 struct qla_tgt_cmd *cmd;
3822
2d70c103
NB		 3823 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3824 /* That could happen only in case of an error/reset/abort */
3825 if (status != CTIO_SUCCESS) {
3826 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3827 "Intermediate CTIO received"
3828 " (status %x)\n", status);
3829 }
3830 return;
3831 }
3832
3833 cmd = qlt_ctio_to_cmd(vha, handle, ctio);
092e1dc3 3834 if (cmd == NULL)
2d70c103 3835 return;
092e1dc3 3836
2d70c103 3837 se_cmd = &cmd->se_cmd;
d564a372 3838 cmd->cmd_sent_to_fw = 0;
2d70c103 3839
f9b6721a 3840 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3841
3842 if (unlikely(status != CTIO_SUCCESS)) {
3843 switch (status & 0xFFFF) {
3844 case CTIO_LIP_RESET:
3845 case CTIO_TARGET_RESET:
3846 case CTIO_ABORTED:
7b898542 3847 /* driver request abort via Terminate exchange */
2d70c103
NB		 3848 case CTIO_TIMEOUT:
3849 case CTIO_INVALID_RX_ID:
3850 /* They are OK */
3851 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3852 "qla_target(%d): CTIO with "
3853 "status %#x received, state %x, se_cmd %p, "
3854 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3855 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3856 status, cmd->state, se_cmd);
3857 break;
3858
3859 case CTIO_PORT_LOGGED_OUT:
3860 case CTIO_PORT_UNAVAILABLE:
71cdc079 3861 {
dacb5822
HM		 3862 int logged_out =
3863 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3864
2d70c103 3865 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3866 "qla_target(%d): CTIO with %s status %x "
2d70c103 3867 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3868 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3869 status, cmd->state, se_cmd);
2d70c103 3870
71cdc079
AP		 3871 if (logged_out && cmd->sess) {
3872 /*
3873 * Session is already logged out, but we need
3874 * to notify initiator, who's not aware of this
3875 */
3876 cmd->sess->logout_on_delete = 0;
3877 cmd->sess->send_els_logo = 1;
83548fe2 3878 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3879 "%s %d %8phC post del sess\n",
3880 __func__, __LINE__, cmd->sess->port_name);
3881
3882 qlt_schedule_sess_for_deletion_lock(cmd->sess);
71cdc079
AP		 3883 }
3884 break;
3885 }
f83adb61
QT		 3886 case CTIO_DIF_ERROR: {
3887 struct ctio_crc_from_fw *crc =
3888 (struct ctio_crc_from_fw *)ctio;
3889 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3890 "qla_target(%d): CTIO with DIF_ERROR status %x "
3891 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3892 "expect_dif[0x%llx]\n",
f83adb61
QT		 3893 vha->vp_idx, status, cmd->state, se_cmd,
3894 *((u64 *)&crc->actual_dif[0]),
3895 *((u64 *)&crc->expected_dif[0]));
3896
be25152c
QT		 3897 qlt_handle_dif_error(vha, cmd, ctio);
3898 return;
f83adb61 3899 }
2d70c103
NB		 3900 default:
3901 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3902 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3903 vha->vp_idx, status, cmd->state, se_cmd);
3904 break;
3905 }
3906
7b898542 3907
193b50b9 3908 /* "cmd->aborted" means
7b898542
QT		 3909 * cmd is already aborted/terminated, we don't
3910 * need to terminate again. The exchange is already
3911 * cleaned up/freed at FW level. Just cleanup at driver
3912 * level.
3913 */
3914 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3915 (!cmd->aborted)) {
1eb42f96 3916 cmd->trc_flags |= TRC_CTIO_ERR;
2d70c103
NB		 3917 if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
3918 return;
7b898542 3919 }
2d70c103
NB		 3920 }
3921
3922 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3923 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3924 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3925 cmd->state = QLA_TGT_STATE_DATA_IN;
3926
52c82823 3927 if (status == CTIO_SUCCESS)
2d70c103
NB		 3928 cmd->write_data_transferred = 1;
3929
2d70c103
NB		 3930 ha->tgt.tgt_ops->handle_data(cmd);
3931 return;
193b50b9 3932 } else if (cmd->aborted) {
1eb42f96 3933 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3935 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3936 } else {
1eb42f96 3937 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3938 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3939 "qla_target(%d): A command in state (%d) should "
3940 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3941 }
3942
7b898542 3943 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3944 !cmd->aborted) {
2d70c103
NB		 3945 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3946 dump_stack();
3947 }
3948
3949 ha->tgt.tgt_ops->free_cmd(cmd);
3950}
3951
2d70c103
NB		 3952static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3953 uint8_t task_codes)
3954{
3955 int fcp_task_attr;
3956
3957 switch (task_codes) {
3958 case ATIO_SIMPLE_QUEUE:
68d81f40 3959 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3960 break;
3961 case ATIO_HEAD_OF_QUEUE:
68d81f40 3962 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3963 break;
3964 case ATIO_ORDERED_QUEUE:
68d81f40 3965 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3966 break;
3967 case ATIO_ACA_QUEUE:
68d81f40 3968 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3969 break;
3970 case ATIO_UNTAGGED:
68d81f40 3971 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3972 break;
3973 default:
3974 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3975 "qla_target: unknown task code %x, use ORDERED instead\n",
3976 task_codes);
68d81f40 3977 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3978 break;
3979 }
3980
3981 return fcp_task_attr;
3982}
3983
5d964837 3984static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 3985 uint8_t *);
3986/*
3987 * Process context for I/O path into tcm_qla2xxx code
3988 */
51a07f84 3989static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3990{
2d70c103
NB		 3991 scsi_qla_host_t *vha = cmd->vha;
3992 struct qla_hw_data *ha = vha->hw;
0e8cd71c 3993 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 3994 struct fc_port *sess = cmd->sess;
2d70c103
NB		 3995 struct atio_from_isp *atio = &cmd->atio;
3996 unsigned char *cdb;
3997 unsigned long flags;
3998 uint32_t data_length;
3999 int ret, fcp_task_attr, data_dir, bidi = 0;
4000
e07f8f65 4001 cmd->cmd_in_wq = 0;
1eb42f96 4002 cmd->trc_flags |= TRC_DO_WORK;
2d70c103
NB		 4003 if (tgt->tgt_stop)
4004 goto out_term;
4005
193b50b9 4006 if (cmd->aborted) {
8b2f5ff3
SN		 4007 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4008 "cmd with tag %u is aborted\n",
4009 cmd->atio.u.isp24.exchange_addr);
4010 goto out_term;
4011 }
4012
a07100e0 4013 spin_lock_init(&cmd->cmd_lock);
2d70c103 4014 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4015 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4016 cmd->unpacked_lun = scsilun_to_int(
4017 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4018
4019 if (atio->u.isp24.fcp_cmnd.rddata &&
4020 atio->u.isp24.fcp_cmnd.wrdata) {
4021 bidi = 1;
4022 data_dir = DMA_TO_DEVICE;
4023 } else if (atio->u.isp24.fcp_cmnd.rddata)
4024 data_dir = DMA_FROM_DEVICE;
4025 else if (atio->u.isp24.fcp_cmnd.wrdata)
4026 data_dir = DMA_TO_DEVICE;
4027 else
4028 data_dir = DMA_NONE;
4029
4030 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4031 atio->u.isp24.fcp_cmnd.task_attr);
4032 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4033 &atio->u.isp24.fcp_cmnd.add_cdb[
4034 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4035
51a07f84
NB		 4036 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4037 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4038 if (ret != 0)
4039 goto out_term;
4040 /*
4041 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4042 */
7560151b 4043 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4044 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4045 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4046 return;
4047
4048out_term:
667024a3 4049 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4050 /*
fae9eaf8
RD		 4051 * cmd has not sent to target yet, so pass NULL as the second
4052 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4053 */
1eb42f96 4054 cmd->trc_flags |= TRC_DO_WORK_ERR;
2d70c103 4055 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 4056 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4057
4058 qlt_decr_num_pend_cmds(vha);
51a07f84 4059 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
51a07f84 4060 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7560151b
QT		 4061
4062 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4063 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4064 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4065}
4066
4067static void qlt_do_work(struct work_struct *work)
4068{
4069 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4070 scsi_qla_host_t *vha = cmd->vha;
4071 unsigned long flags;
4072
4073 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4074 list_del(&cmd->cmd_list);
4075 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4076
4077 __qlt_do_work(cmd);
4078}
4079
4080static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4081 struct fc_port *sess,
51a07f84
NB		 4082 struct atio_from_isp *atio)
4083{
4084 struct se_session *se_sess = sess->se_sess;
4085 struct qla_tgt_cmd *cmd;
4086 int tag;
4087
4088 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4089 if (tag < 0)
4090 return NULL;
4091
4092 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4093 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
4094
4095 memcpy(&cmd->atio, atio, sizeof(*atio));
4096 cmd->state = QLA_TGT_STATE_NEW;
4097 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4098 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4099 cmd->vha = vha;
4100 cmd->se_cmd.map_tag = tag;
4101 cmd->sess = sess;
4102 cmd->loop_id = sess->loop_id;
4103 cmd->conf_compl_supported = sess->conf_compl_supported;
4104
1eb42f96 4105 cmd->trc_flags = 0;
9fce1254
KS		 4106 cmd->jiffies_at_alloc = get_jiffies_64();
4107
4108 cmd->reset_count = vha->hw->chip_reset;
4109
51a07f84
NB		 4110 return cmd;
4111}
4112
4113static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *,
4114 uint16_t);
4115
4116static void qlt_create_sess_from_atio(struct work_struct *work)
4117{
4118 struct qla_tgt_sess_op *op = container_of(work,
4119 struct qla_tgt_sess_op, work);
4120 scsi_qla_host_t *vha = op->vha;
4121 struct qla_hw_data *ha = vha->hw;
5d964837 4122 struct fc_port *sess;
51a07f84
NB		 4123 struct qla_tgt_cmd *cmd;
4124 unsigned long flags;
4125 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4126
8b2f5ff3
SN		 4127 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4128 list_del(&op->cmd_list);
4129 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4130
4131 if (op->aborted) {
4132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4133 "sess_op with tag %u is aborted\n",
4134 op->atio.u.isp24.exchange_addr);
4135 goto out_term;
4136 }
4137
51a07f84 4138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 4139 "qla_target(%d): Unable to find wwn login"
4140 " (s_id %x:%x:%x), trying to create it manually\n",
4141 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 4142
4143 if (op->atio.u.raw.entry_count > 1) {
4144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 4145 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 4146 goto out_term;
4147 }
4148
51a07f84
NB		 4149 sess = qlt_make_local_sess(vha, s_id);
4150 /* sess has an extra creation ref. */
51a07f84
NB		 4151
4152 if (!sess)
4153 goto out_term;
4154 /*
4155 * Now obtain a pre-allocated session tag using the original op->atio
4156 * packet header, and dispatch into __qlt_do_work() using the existing
4157 * process context.
4158 */
4159 cmd = qlt_get_tag(vha, sess, &op->atio);
4160 if (!cmd) {
4161 spin_lock_irqsave(&ha->hardware_lock, flags);
4162 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY);
5d964837 4163 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 4164 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4165 kfree(op);
4166 return;
4167 }
726b8548 4168
51a07f84 4169 /*
e3dc0e31 4170 * __qlt_do_work() will call qlt_put_sess() to release
51a07f84
NB		 4171 * the extra reference taken above by qlt_make_local_sess()
4172 */
4173 __qlt_do_work(cmd);
4174 kfree(op);
4175 return;
51a07f84
NB		 4176out_term:
4177 spin_lock_irqsave(&ha->hardware_lock, flags);
a07100e0 4178 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0);
08234e3a 4179 spin_unlock_irqrestore(&ha->hardware_lock, flags);
51a07f84 4180 kfree(op);
2d70c103
NB		 4181}
4182
4183/* ha->hardware_lock supposed to be held on entry */
4184static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4185 struct atio_from_isp *atio)
4186{
51a07f84 4187 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4188 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4189 struct fc_port *sess;
2d70c103 4190 struct qla_tgt_cmd *cmd;
5d964837 4191 unsigned long flags;
2d70c103
NB		 4192
4193 if (unlikely(tgt->tgt_stop)) {
667024a3 4194 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 4195 "New command while device %p is shutting down\n", tgt);
4196 return -EFAULT;
4197 }
4198
51a07f84
NB		 4199 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4200 if (unlikely(!sess)) {
4201 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4202 GFP_ATOMIC);
4203 if (!op)
4204 return -ENOMEM;
4205
4206 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 4207 op->vha = vha;
8b2f5ff3 4208
8b631d87 4209 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4210 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
8b631d87 4211 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4212
51a07f84
NB		 4213 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4214 queue_work(qla_tgt_wq, &op->work);
4215 return 0;
4216 }
e52a8b45
AP		 4217
4218 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4219 * session deletion, but it's still in sess_del_work wq */
726b8548 4220 if (sess->deleted) {
83548fe2 4221 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4222 "New command while old session %p is being deleted\n",
4223 sess);
4224 return -EFAULT;
4225 }
4226
51a07f84
NB		 4227 /*
4228 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4229 */
726b8548 4230 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4231 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4232 "%s: kref_get fail, %8phC oxid %x \n",
4233 __func__, sess->port_name,
4234 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4235 return -EFAULT;
4236 }
51a07f84
NB		 4237
4238 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4239 if (!cmd) {
667024a3 4240 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4241 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4242 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4243 ha->tgt.tgt_ops->put_sess(sess);
4244 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4245 return -ENOMEM;
4246 }
4247
e07f8f65 4248 cmd->cmd_in_wq = 1;
1eb42f96 4249 cmd->trc_flags |= TRC_NEW_CMD;
5327c7db
QT		 4250 cmd->se_cmd.cpuid = ha->msix_count ?
4251 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND;
8b2f5ff3 4252
726b8548 4253 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4254 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4255 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4256
2d70c103 4257 INIT_WORK(&cmd->work, qlt_do_work);
fb3269ba 4258 if (ha->msix_count) {
fb3269ba
QT		 4259 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4260 queue_work_on(smp_processor_id(), qla_tgt_wq,
4261 &cmd->work);
4262 else
4263 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4264 &cmd->work);
4265 } else {
4266 queue_work(qla_tgt_wq, &cmd->work);
4267 }
2d70c103
NB		 4268 return 0;
4269
4270}
4271
4272/* ha->hardware_lock supposed to be held on entry */
5d964837 4273static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4274 int fn, void *iocb, int flags)
4275{
4276 struct scsi_qla_host *vha = sess->vha;
4277 struct qla_hw_data *ha = vha->hw;
4278 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4279 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4280 int res;
2d70c103
NB		 4281
4282 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4283 if (!mcmd) {
4284 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4285 "qla_target(%d): Allocation of management "
4286 "command failed, some commands and their data could "
4287 "leak\n", vha->vp_idx);
4288 return -ENOMEM;
4289 }
4290 memset(mcmd, 0, sizeof(*mcmd));
4291 mcmd->sess = sess;
4292
4293 if (iocb) {
4294 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4295 sizeof(mcmd->orig_iocb.imm_ntfy));
4296 }
4297 mcmd->tmr_func = fn;
4298 mcmd->flags = flags;
b6a029e1 4299 mcmd->reset_count = vha->hw->chip_reset;
2d70c103
NB		 4300
4301 switch (fn) {
2d70c103 4302 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4303 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4304 break;
2d70c103
NB		 4305 }
4306
be92fc3f 4307 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4308 if (res != 0) {
4309 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4310 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4311 sess->vha->vp_idx, res);
4312 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4313 return -EFAULT;
4314 }
4315
4316 return 0;
4317}
4318
4319/* ha->hardware_lock supposed to be held on entry */
4320static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4321{
4322 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4323 struct qla_hw_data *ha = vha->hw;
4324 struct qla_tgt *tgt;
5d964837 4325 struct fc_port *sess;
f775bd14 4326 u64 unpacked_lun;
52c82823 4327 int fn;
7560151b 4328 unsigned long flags;
2d70c103 4329
0e8cd71c 4330 tgt = vha->vha_tgt.qla_tgt;
2d70c103 4331
2d70c103 4332 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4333
4334 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4335 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4336 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4337 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4338
f775bd14
QT		 4339 unpacked_lun =
4340 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 4341
4342 if (!sess) {
4343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4344 "qla_target(%d): task mgmt fn 0x%x for "
4345 "non-existant session\n", vha->vp_idx, fn);
4346 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4347 sizeof(struct atio_from_isp));
4348 }
4349
726b8548 4350 if (sess->deleted)
e52a8b45
AP		 4351 return -EFAULT;
4352
2d70c103
NB		 4353 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4354}
4355
4356/* ha->hardware_lock supposed to be held on entry */
4357static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4358 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4359{
4360 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4361 struct qla_hw_data *ha = vha->hw;
4362 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4363 u64 unpacked_lun;
2d70c103
NB		 4364 int rc;
4365
4366 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4367 if (mcmd == NULL) {
4368 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4369 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4370 vha->vp_idx, __func__);
4371 return -ENOMEM;
4372 }
4373 memset(mcmd, 0, sizeof(*mcmd));
4374
4375 mcmd->sess = sess;
4376 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4377 sizeof(mcmd->orig_iocb.imm_ntfy));
4378
f775bd14
QT		 4379 unpacked_lun =
4380 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
80187f8e 4381 mcmd->reset_count = vha->hw->chip_reset;
be92fc3f 4382 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
2d70c103 4383
be92fc3f 4384 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4385 le16_to_cpu(iocb->u.isp2x.seq_id));
4386 if (rc != 0) {
4387 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4388 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4389 vha->vp_idx, rc);
4390 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4391 return -EFAULT;
4392 }
4393
4394 return 0;
4395}
4396
4397/* ha->hardware_lock supposed to be held on entry */
4398static int qlt_abort_task(struct scsi_qla_host *vha,
4399 struct imm_ntfy_from_isp *iocb)
4400{
4401 struct qla_hw_data *ha = vha->hw;
5d964837 4402 struct fc_port *sess;
2d70c103 4403 int loop_id;
7560151b 4404 unsigned long flags;
2d70c103
NB		 4405
4406 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4407
7560151b 4408 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4409 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4410 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4411
2d70c103
NB		 4412 if (sess == NULL) {
4413 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4414 "qla_target(%d): task abort for unexisting "
4415 "session\n", vha->vp_idx);
0e8cd71c 4416 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4417 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4418 }
4419
4420 return __qlt_abort_task(vha, iocb, sess);
4421}
4422
a6ca8878
AP		 4423void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4424{
726b8548
QT		 4425 if (rc != MBS_COMMAND_COMPLETE) {
4426 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4427 "%s: se_sess %p / sess %p from"
4428 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4429 " LOGO failed: %#x\n",
4430 __func__,
4431 fcport->se_sess,
4432 fcport,
4433 fcport->port_name, fcport->loop_id,
4434 fcport->d_id.b.domain, fcport->d_id.b.area,
4435 fcport->d_id.b.al_pa, rc);
4436 }
4437
4438 fcport->logout_completed = 1;
a6ca8878
AP		 4439}
4440
a6ca8878
AP		 4441/*
4442* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4443*
4444* Schedules sessions with matching port_id/loop_id but different wwn for
4445* deletion. Returns existing session with matching wwn if present.
4446* Null otherwise.
4447*/
726b8548
QT		 4448struct fc_port *
4449qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4450 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4451{
5d964837 4452 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4453 uint64_t other_wwn;
4454
b7bd104e
AP		 4455 *conflict_sess = NULL;
4456
5d964837 4457 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4458
4459 other_wwn = wwn_to_u64(other_sess->port_name);
4460
4461 if (wwn == other_wwn) {
4462 WARN_ON(sess);
4463 sess = other_sess;
4464 continue;
4465 }
4466
4467 /* find other sess with nport_id collision */
37cacc0a 4468 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4469 if (loop_id != other_sess->loop_id) {
726b8548 4470 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4471 "Invalidating sess %p loop_id %d wwn %llx.\n",
4472 other_sess, other_sess->loop_id, other_wwn);
4473
4474 /*
4475 * logout_on_delete is set by default, but another
4476 * session that has the same s_id/loop_id combo
4477 * might have cleared it when requested this session
4478 * deletion, so don't touch it
4479 */
4480 qlt_schedule_sess_for_deletion(other_sess, true);
4481 } else {
4482 /*
4483 * Another wwn used to have our s_id/loop_id
b7bd104e 4484 * kill the session, but don't free the loop_id
a6ca8878 4485 */
83548fe2 4486 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4487 "Invalidating sess %p loop_id %d wwn %llx.\n",
4488 other_sess, other_sess->loop_id, other_wwn);
4489
4490
b7bd104e
AP		 4491 other_sess->keep_nport_handle = 1;
4492 *conflict_sess = other_sess;
a6ca8878
AP		 4493 qlt_schedule_sess_for_deletion(other_sess,
4494 true);
4495 }
4496 continue;
4497 }
4498
4499 /* find other sess with nport handle collision */
726b8548
QT		 4500 if ((loop_id == other_sess->loop_id) &&
4501 (loop_id != FC_NO_LOOP_ID)) {
4502 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4503 "Invalidating sess %p loop_id %d wwn %llx.\n",
4504 other_sess, other_sess->loop_id, other_wwn);
4505
4506 /* Same loop_id but different s_id
4507 * Ok to kill and logout */
4508 qlt_schedule_sess_for_deletion(other_sess, true);
4509 }
4510 }
4511
4512 return sess;
4513}
4514
daddf5cf
AP		 4515/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4516static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4517{
4518 struct qla_tgt_sess_op *op;
4519 struct qla_tgt_cmd *cmd;
4520 uint32_t key;
4521 int count = 0;
8b631d87 4522 unsigned long flags;
daddf5cf
AP		 4523
4524 key = (((u32)s_id->b.domain << 16) |
4525 ((u32)s_id->b.area << 8) |
4526 ((u32)s_id->b.al_pa));
4527
8b631d87 4528 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4529 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4530 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4531
daddf5cf
AP		 4532 if (op_key == key) {
4533 op->aborted = true;
4534 count++;
4535 }
4536 }
41dc529a
QT		 4537
4538 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4539 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4540 if (op_key == key) {
4541 op->aborted = true;
4542 count++;
4543 }
4544 }
4545
daddf5cf
AP		 4546 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4547 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4548 if (cmd_key == key) {
193b50b9 4549 cmd->aborted = 1;
daddf5cf
AP		 4550 count++;
4551 }
4552 }
8b631d87 4553 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4554
4555 return count;
4556}
4557
2d70c103
NB		 4558/*
4559 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4560 */
4561static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4562 struct imm_ntfy_from_isp *iocb)
4563{
a6ca8878 4564 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4565 struct qla_hw_data *ha = vha->hw;
5d964837 4566 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4567 uint64_t wwn;
4568 port_id_t port_id;
4569 uint16_t loop_id;
4570 uint16_t wd3_lo;
2d70c103 4571 int res = 0;
5d964837 4572 struct qlt_plogi_ack_t *pla;
7560151b 4573 unsigned long flags;
2d70c103 4574
a6ca8878
AP		 4575 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4576
4577 port_id.b.domain = iocb->u.isp24.port_id[2];
4578 port_id.b.area = iocb->u.isp24.port_id[1];
4579 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4580 port_id.b.rsvd_1 = 0;
4581
4582 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4583
726b8548
QT		 4584 ql_dbg(ql_dbg_disc, vha, 0xf026,
4585 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4586 vha->vp_idx, iocb->u.isp24.port_id[2],
4587 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4588 iocb->u.isp24.status_subcode, loop_id,
4589 iocb->u.isp24.port_name);
2d70c103 4590
a6ca8878
AP		 4591 /* res = 1 means ack at the end of thread
4592 * res = 0 means ack async/later.
4593 */
2d70c103
NB		 4594 switch (iocb->u.isp24.status_subcode) {
4595 case ELS_PLOGI:
a6ca8878 4596
daddf5cf
AP		 4597 /* Mark all stale commands in qla_tgt_wq for deletion */
4598 abort_cmds_for_s_id(vha, &port_id);
4599
7560151b
QT		 4600 if (wwn) {
4601 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4602 sess = qlt_find_sess_invalidate_other(vha, wwn,
4603 port_id, loop_id, &conflict_sess);
7560151b
QT		 4604 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4605 }
a6ca8878 4606
726b8548 4607 if (IS_SW_RESV_ADDR(port_id)) {
a6ca8878
AP		 4608 res = 1;
4609 break;
4610 }
4611
b7bd104e
AP		 4612 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4613 if (!pla) {
a6ca8878 4614 qlt_send_term_imm_notif(vha, iocb, 1);
a6ca8878
AP		 4615 break;
4616 }
4617
4618 res = 0;
4619
726b8548
QT		 4620 if (conflict_sess) {
4621 conflict_sess->login_gen++;
b7bd104e 4622 qlt_plogi_ack_link(vha, pla, conflict_sess,
726b8548
QT		 4623 QLT_PLOGI_LINK_CONFLICT);
4624 }
a6ca8878 4625
726b8548
QT		 4626 if (!sess) {
4627 pla->ref_count++;
4628 qla24xx_post_newsess_work(vha, &port_id,
4629 iocb->u.isp24.port_name, pla);
4630 res = 0;
b7bd104e 4631 break;
726b8548 4632 }
b7bd104e
AP		 4633
4634 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
726b8548
QT		 4635 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4636 sess->d_id = port_id;
4637 sess->login_gen++;
4638
4639 switch (sess->disc_state) {
4640 case DSC_DELETED:
4641 qlt_plogi_ack_unref(vha, pla);
4642 break;
4643
4644 default:
4645 /*
4646 * Under normal circumstances we want to release nport handle
4647 * during LOGO process to avoid nport handle leaks inside FW.
4648 * The exception is when LOGO is done while another PLOGI with
4649 * the same nport handle is waiting as might be the case here.
4650 * Note: there is always a possibily of a race where session
4651 * deletion has already started for other reasons (e.g. ACL
4652 * removal) and now PLOGI arrives:
4653 * 1. if PLOGI arrived in FW after nport handle has been freed,
4654 * FW must have assigned this PLOGI a new/same handle and we
4655 * can proceed ACK'ing it as usual when session deletion
4656 * completes.
4657 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4658 * bit reached it, the handle has now been released. We'll
4659 * get an error when we ACK this PLOGI. Nothing will be sent
4660 * back to initiator. Initiator should eventually retry
4661 * PLOGI and situation will correct itself.
4662 */
4663 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4664 (sess->d_id.b24 == port_id.b24));
4665
83548fe2
QT		 4666 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4667 "%s %d %8phC post del sess\n",
4668 __func__, __LINE__, sess->port_name);
726b8548
QT		 4669
4670
4671 qlt_schedule_sess_for_deletion_lock(sess);
4672 break;
4673 }
4674
a6ca8878
AP		 4675 break;
4676
2d70c103 4677 case ELS_PRLI:
a6ca8878
AP		 4678 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4679
7560151b
QT		 4680 if (wwn) {
4681 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4682 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4683 loop_id, &conflict_sess);
7560151b
QT		 4684 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4685 }
b7bd104e
AP		 4686
4687 if (conflict_sess) {
4688 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4689 "PRLI with conflicting sess %p port %8phC\n",
4690 conflict_sess, conflict_sess->port_name);
4691 qlt_send_term_imm_notif(vha, iocb, 1);
4692 res = 0;
4693 break;
4694 }
a6ca8878
AP		 4695
4696 if (sess != NULL) {
ec7193e2
QT		 4697 if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
4698 sess->fw_login_state != DSC_LS_PLOGI_COMP) {
a6ca8878
AP		 4699 /*
4700 * Impatient initiator sent PRLI before last
4701 * PLOGI could finish. Will force him to re-try,
4702 * while last one finishes.
4703 */
df673274 4704 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4705 "sess %p PRLI received, before plogi ack.\n",
4706 sess);
4707 qlt_send_term_imm_notif(vha, iocb, 1);
4708 res = 0;
4709 break;
4710 }
4711
4712 /*
4713 * This shouldn't happen under normal circumstances,
4714 * since we have deleted the old session during PLOGI
4715 */
df673274 4716 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4717 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4718 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4719
4720 sess->local = 0;
4721 sess->loop_id = loop_id;
37cacc0a 4722 sess->d_id = port_id;
726b8548 4723 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4724
4725 if (wd3_lo & BIT_7)
4726 sess->conf_compl_supported = 1;
4727
726b8548
QT		 4728 if ((wd3_lo & BIT_4) == 0)
4729 sess->port_type = FCT_INITIATOR;
4730 else
4731 sess->port_type = FCT_TARGET;
df673274
AP		 4732 }
4733 res = 1; /* send notify ack */
4734
4735 /* Make session global (not used in fabric mode) */
4736 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4737 if (sess) {
83548fe2 4738 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4739 "%s %d %8phC post nack\n",
4740 __func__, __LINE__, sess->port_name);
4741 qla24xx_post_nack_work(vha, sess, iocb,
4742 SRB_NACK_PRLI);
4743 res = 0;
4744 } else {
4745 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4746 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4747 qla2xxx_wake_dpc(vha);
4748 }
a6ca8878 4749 } else {
726b8548 4750 if (sess) {
83548fe2 4751 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4752 "%s %d %8phC post nack\n",
4753 __func__, __LINE__, sess->port_name);
726b8548
QT		 4754 qla24xx_post_nack_work(vha, sess, iocb,
4755 SRB_NACK_PRLI);
4756 res = 0;
4757 }
4758 }
a6ca8878
AP		 4759 break;
4760
41dc529a
QT		 4761 case ELS_TPRLO:
4762 if (le16_to_cpu(iocb->u.isp24.flags) &
4763 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4764 loop_id = 0xFFFF;
4765 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4766 res = 1;
4767 break;
4768 }
4769 /* drop through */
2d70c103
NB		 4770 case ELS_LOGO:
4771 case ELS_PRLO:
726b8548
QT		 4772 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4773 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4774 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4775
4776 if (sess) {
4777 sess->login_gen++;
4778 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4779 sess->logo_ack_needed = 1;
4780 memcpy(sess->iocb, iocb, IOCB_SIZE);
4781 }
4782
2d70c103 4783 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4784
83548fe2 4785 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4786 "%s: logo %llx res %d sess %p ",
4787 __func__, wwn, res, sess);
4788 if (res == 0) {
41dc529a
QT		 4789 /*
4790 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4791 * for LOGO_ACK & sess delete
4792 */
726b8548
QT		 4793 BUG_ON(!sess);
4794 res = 0;
4795 } else {
41dc529a 4796 /* cmd did not go to upper layer. */
726b8548
QT		 4797 if (sess) {
4798 qlt_schedule_sess_for_deletion_lock(sess);
4799 res = 0;
4800 }
4801 /* else logo will be ack */
4802 }
2d70c103
NB		 4803 break;
4804 case ELS_PDISC:
4805 case ELS_ADISC:
4806 {
0e8cd71c 4807 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4808 if (tgt->link_reinit_iocb_pending) {
4809 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4810 0, 0, 0, 0, 0, 0);
4811 tgt->link_reinit_iocb_pending = 0;
4812 }
726b8548
QT		 4813
4814 sess = qla2x00_find_fcport_by_wwpn(vha,
4815 iocb->u.isp24.port_name, 1);
4816 if (sess) {
83548fe2 4817 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4818 "sess %p lid %d|%d DS %d LS %d\n",
4819 sess, sess->loop_id, loop_id,
4820 sess->disc_state, sess->fw_login_state);
4821 }
4822
2d70c103
NB		 4823 res = 1; /* send notify ack */
4824 break;
4825 }
4826
a6ca8878 4827 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4828 default:
4829 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4830 "qla_target(%d): Unsupported ELS command %x "
4831 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4832 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4833 break;
4834 }
4835
4836 return res;
4837}
4838
2d70c103
NB		 4839/*
4840 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4841 */
4842static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4843 struct imm_ntfy_from_isp *iocb)
4844{
4845 struct qla_hw_data *ha = vha->hw;
4846 uint32_t add_flags = 0;
4847 int send_notify_ack = 1;
4848 uint16_t status;
4849
4850 status = le16_to_cpu(iocb->u.isp2x.status);
4851 switch (status) {
4852 case IMM_NTFY_LIP_RESET:
4853 {
4854 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4855 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4856 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4857 iocb->u.isp24.status_subcode);
4858
4859 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4860 send_notify_ack = 0;
4861 break;
4862 }
4863
4864 case IMM_NTFY_LIP_LINK_REINIT:
4865 {
0e8cd71c 4866 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4867 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4868 "qla_target(%d): LINK REINIT (loop %#x, "
4869 "subcode %x)\n", vha->vp_idx,
4870 le16_to_cpu(iocb->u.isp24.nport_handle),
4871 iocb->u.isp24.status_subcode);
4872 if (tgt->link_reinit_iocb_pending) {
4873 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
4874 0, 0, 0, 0, 0, 0);
4875 }
4876 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4877 tgt->link_reinit_iocb_pending = 1;
4878 /*
4879 * QLogic requires to wait after LINK REINIT for possible
4880 * PDISC or ADISC ELS commands
4881 */
4882 send_notify_ack = 0;
4883 break;
4884 }
4885
4886 case IMM_NTFY_PORT_LOGOUT:
4887 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4888 "qla_target(%d): Port logout (loop "
4889 "%#x, subcode %x)\n", vha->vp_idx,
4890 le16_to_cpu(iocb->u.isp24.nport_handle),
4891 iocb->u.isp24.status_subcode);
4892
4893 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4894 send_notify_ack = 0;
4895 /* The sessions will be cleared in the callback, if needed */
4896 break;
4897
4898 case IMM_NTFY_GLBL_TPRLO:
4899 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
4900 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
4901 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4902 send_notify_ack = 0;
4903 /* The sessions will be cleared in the callback, if needed */
4904 break;
4905
4906 case IMM_NTFY_PORT_CONFIG:
4907 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
4908 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
4909 status);
4910 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4911 send_notify_ack = 0;
4912 /* The sessions will be cleared in the callback, if needed */
4913 break;
4914
4915 case IMM_NTFY_GLBL_LOGO:
4916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
4917 "qla_target(%d): Link failure detected\n",
4918 vha->vp_idx);
4919 /* I_T nexus loss */
4920 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
4921 send_notify_ack = 0;
4922 break;
4923
4924 case IMM_NTFY_IOCB_OVERFLOW:
4925 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
4926 "qla_target(%d): Cannot provide requested "
4927 "capability (IOCB overflowed the immediate notify "
4928 "resource count)\n", vha->vp_idx);
4929 break;
4930
4931 case IMM_NTFY_ABORT_TASK:
4932 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
4933 "qla_target(%d): Abort Task (S %08x I %#x -> "
4934 "L %#x)\n", vha->vp_idx,
4935 le16_to_cpu(iocb->u.isp2x.seq_id),
4936 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
4937 le16_to_cpu(iocb->u.isp2x.lun));
4938 if (qlt_abort_task(vha, iocb) == 0)
4939 send_notify_ack = 0;
4940 break;
4941
4942 case IMM_NTFY_RESOURCE:
4943 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
4944 "qla_target(%d): Out of resources, host %ld\n",
4945 vha->vp_idx, vha->host_no);
4946 break;
4947
4948 case IMM_NTFY_MSG_RX:
4949 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
4950 "qla_target(%d): Immediate notify task %x\n",
4951 vha->vp_idx, iocb->u.isp2x.task_flags);
4952 if (qlt_handle_task_mgmt(vha, iocb) == 0)
4953 send_notify_ack = 0;
4954 break;
4955
4956 case IMM_NTFY_ELS:
4957 if (qlt_24xx_handle_els(vha, iocb) == 0)
4958 send_notify_ack = 0;
4959 break;
2d70c103
NB		 4960 default:
4961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
4962 "qla_target(%d): Received unknown immediate "
4963 "notify status %x\n", vha->vp_idx, status);
4964 break;
4965 }
4966
4967 if (send_notify_ack)
4968 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
4969}
4970
4971/*
4972 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4973 * This function sends busy to ISP 2xxx or 24xx.
4974 */
33e79977 4975static int __qlt_send_busy(struct scsi_qla_host *vha,
2d70c103
NB		 4976 struct atio_from_isp *atio, uint16_t status)
4977{
4978 struct ctio7_to_24xx *ctio24;
4979 struct qla_hw_data *ha = vha->hw;
4980 request_t *pkt;
5d964837 4981 struct fc_port *sess = NULL;
7560151b 4982 unsigned long flags;
f7e761f5 4983 u16 temp;
2d70c103 4984
7560151b 4985 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4986 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4987 atio->u.isp24.fcp_hdr.s_id);
7560151b 4988 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 4989 if (!sess) {
a07100e0 4990 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
33e79977 4991 return 0;
2d70c103
NB		 4992 }
4993 /* Sending marker isn't necessary, since we called from ISR */
4994
4995 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
4996 if (!pkt) {
667024a3 4997 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 4998 "qla_target(%d): %s failed: unable to allocate "
4999 "request packet", vha->vp_idx, __func__);
33e79977 5000 return -ENOMEM;
2d70c103
NB		 5001 }
5002
ce1025cd 5003 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5004 pkt->entry_count = 1;
5005 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5006
5007 ctio24 = (struct ctio7_to_24xx *)pkt;
5008 ctio24->entry_type = CTIO_TYPE7;
5009 ctio24->nport_handle = sess->loop_id;
ad950360 5010 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5011 ctio24->vp_index = vha->vp_idx;
5012 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5013 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5014 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5015 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5016 temp = (atio->u.isp24.attr << 9) |
2d70c103 5017 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5018 CTIO7_FLAGS_DONT_RET_CTIO;
5019 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5020 /*
5021 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5022 * if the explicit conformation is used.
5023 */
5024 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5025 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5026 /* Memory Barrier */
5027 wmb();
2d70c103 5028 qla2x00_start_iocbs(vha, vha->req);
33e79977
QT		 5029 return 0;
5030}
5031
5032/*
5033 * This routine is used to allocate a command for either a QFull condition
5034 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5035 * out previously.
5036 */
5037static void
5038qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5039 struct atio_from_isp *atio, uint16_t status, int qfull)
5040{
5041 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5042 struct qla_hw_data *ha = vha->hw;
5d964837 5043 struct fc_port *sess;
33e79977
QT		 5044 struct se_session *se_sess;
5045 struct qla_tgt_cmd *cmd;
5046 int tag;
5047
5048 if (unlikely(tgt->tgt_stop)) {
5049 ql_dbg(ql_dbg_io, vha, 0x300a,
5050 "New command while device %p is shutting down\n", tgt);
5051 return;
5052 }
5053
5054 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5055 vha->hw->tgt.num_qfull_cmds_dropped++;
5056 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5057 vha->qla_stats.stat_max_qfull_cmds_dropped)
5058 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5059 vha->hw->tgt.num_qfull_cmds_dropped;
5060
5061 ql_dbg(ql_dbg_io, vha, 0x3068,
5062 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5063 vha->vp_idx, __func__,
5064 vha->hw->tgt.num_qfull_cmds_dropped);
5065
5066 qlt_chk_exch_leak_thresh_hold(vha);
5067 return;
5068 }
5069
5070 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5071 (vha, atio->u.isp24.fcp_hdr.s_id);
5072 if (!sess)
5073 return;
5074
5075 se_sess = sess->se_sess;
5076
5077 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5078 if (tag < 0)
5079 return;
5080
5081 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5082 if (!cmd) {
5083 ql_dbg(ql_dbg_io, vha, 0x3009,
5084 "qla_target(%d): %s: Allocation of cmd failed\n",
5085 vha->vp_idx, __func__);
5086
5087 vha->hw->tgt.num_qfull_cmds_dropped++;
5088 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5089 vha->qla_stats.stat_max_qfull_cmds_dropped)
5090 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5091 vha->hw->tgt.num_qfull_cmds_dropped;
5092
5093 qlt_chk_exch_leak_thresh_hold(vha);
5094 return;
5095 }
5096
5097 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5098
5099 qlt_incr_num_pend_cmds(vha);
5100 INIT_LIST_HEAD(&cmd->cmd_list);
5101 memcpy(&cmd->atio, atio, sizeof(*atio));
5102
5103 cmd->tgt = vha->vha_tgt.qla_tgt;
5104 cmd->vha = vha;
5105 cmd->reset_count = vha->hw->chip_reset;
5106 cmd->q_full = 1;
5107
5108 if (qfull) {
5109 cmd->q_full = 1;
5110 /* NOTE: borrowing the state field to carry the status */
5111 cmd->state = status;
5112 } else
5113 cmd->term_exchg = 1;
5114
5115 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5116
5117 vha->hw->tgt.num_qfull_cmds_alloc++;
5118 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5119 vha->qla_stats.stat_max_qfull_cmds_alloc)
5120 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977
QT		 5121 vha->hw->tgt.num_qfull_cmds_alloc;
5122}
5123
5124int
5125qlt_free_qfull_cmds(struct scsi_qla_host *vha)
5126{
5127 struct qla_hw_data *ha = vha->hw;
5128 unsigned long flags;
5129 struct qla_tgt_cmd *cmd, *tcmd;
5130 struct list_head free_list;
5131 int rc = 0;
5132
5133 if (list_empty(&ha->tgt.q_full_list))
5134 return 0;
5135
5136 INIT_LIST_HEAD(&free_list);
5137
5138 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
5139
5140 if (list_empty(&ha->tgt.q_full_list)) {
5141 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5142 return 0;
5143 }
5144
5145 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
5146 if (cmd->q_full)
5147 /* cmd->state is a borrowed field to hold status */
5148 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
5149 else if (cmd->term_exchg)
5150 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
5151
5152 if (rc == -ENOMEM)
5153 break;
5154
5155 if (cmd->q_full)
5156 ql_dbg(ql_dbg_io, vha, 0x3006,
5157 "%s: busy sent for ox_id[%04x]\n", __func__,
5158 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5159 else if (cmd->term_exchg)
5160 ql_dbg(ql_dbg_io, vha, 0x3007,
5161 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5162 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5163 else
5164 ql_dbg(ql_dbg_io, vha, 0x3008,
5165 "%s: Unexpected cmd in QFull list %p\n", __func__,
5166 cmd);
5167
5168 list_del(&cmd->cmd_list);
5169 list_add_tail(&cmd->cmd_list, &free_list);
5170
5171 /* piggy back on hardware_lock for protection */
5172 vha->hw->tgt.num_qfull_cmds_alloc--;
5173 }
5174 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
5175
5176 cmd = NULL;
5177
5178 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5179 list_del(&cmd->cmd_list);
5180 /* This cmd was never sent to TCM. There is no need
5181 * to schedule free or call free_cmd
5182 */
5183 qlt_free_cmd(cmd);
5184 }
5185 return rc;
5186}
5187
5188static void
5189qlt_send_busy(struct scsi_qla_host *vha,
5190 struct atio_from_isp *atio, uint16_t status)
5191{
5192 int rc = 0;
5193
5194 rc = __qlt_send_busy(vha, atio, status);
5195 if (rc == -ENOMEM)
5196 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5197}
5198
5199static int
5200qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
8b666809 5201 struct atio_from_isp *atio, bool ha_locked)
33e79977
QT		 5202{
5203 struct qla_hw_data *ha = vha->hw;
5204 uint16_t status;
8b666809 5205 unsigned long flags;
33e79977
QT		 5206
5207 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5208 return 0;
5209
8b666809
QT		 5210 if (!ha_locked)
5211 spin_lock_irqsave(&ha->hardware_lock, flags);
33e79977
QT		 5212 status = temp_sam_status;
5213 qlt_send_busy(vha, atio, status);
8b666809
QT		 5214 if (!ha_locked)
5215 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5216
33e79977 5217 return 1;
2d70c103
NB		 5218}
5219
5220/* ha->hardware_lock supposed to be held on entry */
5221/* called via callback from qla2xxx */
5222static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5223 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5224{
5225 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5226 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5227 int rc;
2f424b9b 5228 unsigned long flags;
2d70c103
NB		 5229
5230 if (unlikely(tgt == NULL)) {
ec7193e2 5231 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5232 "ATIO pkt, but no tgt (ha %p)", ha);
5233 return;
5234 }
2d70c103
NB		 5235 /*
5236 * In tgt_stop mode we also should allow all requests to pass.
5237 * Otherwise, some commands can stuck.
5238 */
5239
2f424b9b 5240 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5241
5242 switch (atio->u.raw.entry_type) {
5243 case ATIO_TYPE7:
2d70c103
NB		 5244 if (unlikely(atio->u.isp24.exchange_addr ==
5245 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5246 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5247 "qla_target(%d): ATIO_TYPE7 "
5248 "received with UNKNOWN exchange address, "
5249 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5250 if (!ha_locked)
5251 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5252 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
2f424b9b
QT		 5253 if (!ha_locked)
5254 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5255 break;
5256 }
33e79977
QT		 5257
5258
5259
5260 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
8b666809 5261 rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
33e79977 5262 if (rc != 0) {
2f424b9b 5263 tgt->atio_irq_cmd_count--;
33e79977
QT		 5264 return;
5265 }
2d70c103 5266 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5267 } else {
2d70c103 5268 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5269 }
2d70c103
NB		 5270 if (unlikely(rc != 0)) {
5271 if (rc == -ESRCH) {
2f424b9b
QT		 5272 if (!ha_locked)
5273 spin_lock_irqsave
5274 (&ha->hardware_lock, flags);
5275
2d70c103
NB		 5276#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5277 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
5278#else
a07100e0 5279 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103 5280#endif
2f424b9b
QT		 5281
5282 if (!ha_locked)
5283 spin_unlock_irqrestore
5284 (&ha->hardware_lock, flags);
5285
2d70c103
NB		 5286 } else {
5287 if (tgt->tgt_stop) {
5288 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5289 "qla_target: Unable to send "
5290 "command to target for req, "
5291 "ignoring.\n");
5292 } else {
5293 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5294 "qla_target(%d): Unable to send "
5295 "command to target, sending BUSY "
5296 "status.\n", vha->vp_idx);
2f424b9b
QT		 5297 if (!ha_locked)
5298 spin_lock_irqsave(
5299 &ha->hardware_lock, flags);
2d70c103 5300 qlt_send_busy(vha, atio, SAM_STAT_BUSY);
2f424b9b
QT		 5301 if (!ha_locked)
5302 spin_unlock_irqrestore(
5303 &ha->hardware_lock, flags);
2d70c103
NB		 5304 }
5305 }
5306 }
5307 break;
5308
5309 case IMMED_NOTIFY_TYPE:
5310 {
5311 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5312 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5313 "qla_target(%d): Received ATIO packet %x "
5314 "with error status %x\n", vha->vp_idx,
5315 atio->u.raw.entry_type,
5316 atio->u.isp2x.entry_status);
5317 break;
5318 }
5319 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5320
5321 if (!ha_locked)
5322 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5323 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5324 if (!ha_locked)
5325 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5326 break;
5327 }
5328
5329 default:
5330 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5331 "qla_target(%d): Received unknown ATIO atio "
5332 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5333 break;
5334 }
5335
2f424b9b 5336 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5337}
5338
5339/* ha->hardware_lock supposed to be held on entry */
5340/* called via callback from qla2xxx */
5341static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
5342{
5343 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5344 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5345
5346 if (unlikely(tgt == NULL)) {
5347 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5348 "qla_target(%d): Response pkt %x received, but no "
5349 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5350 return;
5351 }
5352
2d70c103
NB		 5353 /*
5354 * In tgt_stop mode we also should allow all requests to pass.
5355 * Otherwise, some commands can stuck.
5356 */
5357
2d70c103 5358 switch (pkt->entry_type) {
f83adb61 5359 case CTIO_CRC2:
2d70c103
NB		 5360 case CTIO_TYPE7:
5361 {
5362 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
2d70c103
NB		 5363 qlt_do_ctio_completion(vha, entry->handle,
5364 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5365 entry);
5366 break;
5367 }
5368
5369 case ACCEPT_TGT_IO_TYPE:
5370 {
5371 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5372 int rc;
2d70c103 5373 if (atio->u.isp2x.status !=
ad950360 5374 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5375 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5376 "qla_target(%d): ATIO with error "
5377 "status %x received\n", vha->vp_idx,
5378 le16_to_cpu(atio->u.isp2x.status));
5379 break;
5380 }
2d70c103 5381
8b666809 5382 rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
ba68a635 5383 if (rc != 0)
33e79977 5384 return;
33e79977 5385
2d70c103
NB		 5386 rc = qlt_handle_cmd_for_atio(vha, atio);
5387 if (unlikely(rc != 0)) {
5388 if (rc == -ESRCH) {
5389#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
5390 qlt_send_busy(vha, atio, 0);
5391#else
a07100e0 5392 qlt_send_term_exchange(vha, NULL, atio, 1, 0);
2d70c103
NB		 5393#endif
5394 } else {
5395 if (tgt->tgt_stop) {
5396 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5397 "qla_target: Unable to send "
5398 "command to target, sending TERM "
5399 "EXCHANGE for rsp\n");
5400 qlt_send_term_exchange(vha, NULL,
a07100e0 5401 atio, 1, 0);
2d70c103
NB		 5402 } else {
5403 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5404 "qla_target(%d): Unable to send "
5405 "command to target, sending BUSY "
5406 "status\n", vha->vp_idx);
5407 qlt_send_busy(vha, atio, 0);
5408 }
5409 }
5410 }
5411 }
5412 break;
5413
5414 case CONTINUE_TGT_IO_TYPE:
5415 {
5416 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5417 qlt_do_ctio_completion(vha, entry->handle,
5418 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5419 entry);
5420 break;
5421 }
5422
5423 case CTIO_A64_TYPE:
5424 {
5425 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
2d70c103
NB		 5426 qlt_do_ctio_completion(vha, entry->handle,
5427 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5428 entry);
5429 break;
5430 }
5431
5432 case IMMED_NOTIFY_TYPE:
5433 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5434 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5435 break;
5436
5437 case NOTIFY_ACK_TYPE:
5438 if (tgt->notify_ack_expected > 0) {
5439 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5440 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5441 "NOTIFY_ACK seq %08x status %x\n",
5442 le16_to_cpu(entry->u.isp2x.seq_id),
5443 le16_to_cpu(entry->u.isp2x.status));
5444 tgt->notify_ack_expected--;
5445 if (entry->u.isp2x.status !=
ad950360 5446 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5447 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5448 "qla_target(%d): NOTIFY_ACK "
5449 "failed %x\n", vha->vp_idx,
5450 le16_to_cpu(entry->u.isp2x.status));
5451 }
5452 } else {
5453 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5454 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5455 vha->vp_idx);
5456 }
5457 break;
5458
5459 case ABTS_RECV_24XX:
5460 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5461 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5462 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5463 break;
5464
5465 case ABTS_RESP_24XX:
5466 if (tgt->abts_resp_expected > 0) {
5467 struct abts_resp_from_24xx_fw *entry =
5468 (struct abts_resp_from_24xx_fw *)pkt;
5469 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5470 "ABTS_RESP_24XX: compl_status %x\n",
5471 entry->compl_status);
5472 tgt->abts_resp_expected--;
5473 if (le16_to_cpu(entry->compl_status) !=
5474 ABTS_RESP_COMPL_SUCCESS) {
5475 if ((entry->error_subcode1 == 0x1E) &&
5476 (entry->error_subcode2 == 0)) {
5477 /*
5478 * We've got a race here: aborted
5479 * exchange not terminated, i.e.
5480 * response for the aborted command was
5481 * sent between the abort request was
5482 * received and processed.
5483 * Unfortunately, the firmware has a
5484 * silly requirement that all aborted
5485 * exchanges must be explicitely
5486 * terminated, otherwise it refuses to
5487 * send responses for the abort
5488 * requests. So, we have to
5489 * (re)terminate the exchange and retry
5490 * the abort response.
5491 */
5492 qlt_24xx_retry_term_exchange(vha,
5493 entry);
5494 } else
5495 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5496 "qla_target(%d): ABTS_RESP_24XX "
5497 "failed %x (subcode %x:%x)",
5498 vha->vp_idx, entry->compl_status,
5499 entry->error_subcode1,
5500 entry->error_subcode2);
5501 }
5502 } else {
5503 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5504 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5505 "received\n", vha->vp_idx);
5506 }
5507 break;
5508
5509 default:
5510 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5511 "qla_target(%d): Received unknown response pkt "
5512 "type %x\n", vha->vp_idx, pkt->entry_type);
5513 break;
5514 }
5515
2d70c103
NB		 5516}
5517
5518/*
5519 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5520 */
5521void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5522 uint16_t *mailbox)
5523{
5524 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5525 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5526 int login_code;
2d70c103 5527
3a33dc95 5528 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5529 return;
5530
5531 if (unlikely(tgt == NULL)) {
5532 ql_dbg(ql_dbg_tgt, vha, 0xe03a,
5533 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
5534 return;
5535 }
5536
5537 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5538 IS_QLA2100(ha))
5539 return;
5540 /*
5541 * In tgt_stop mode we also should allow all requests to pass.
5542 * Otherwise, some commands can stuck.
5543 */
5544
2d70c103
NB		 5545
5546 switch (code) {
5547 case MBA_RESET: /* Reset */
5548 case MBA_SYSTEM_ERR: /* System Error */
5549 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5550 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5551 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5552 "qla_target(%d): System error async event %#x "
6efb3c0a 5553 "occurred", vha->vp_idx, code);
2d70c103
NB		 5554 break;
5555 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5556 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5557 break;
5558
5559 case MBA_LOOP_UP:
5560 {
5561 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5562 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5563 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5564 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5565 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5566 if (tgt->link_reinit_iocb_pending) {
5567 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
5568 0, 0, 0, 0, 0, 0);
5569 tgt->link_reinit_iocb_pending = 0;
5570 }
5571 break;
5572 }
5573
5574 case MBA_LIP_OCCURRED:
5575 case MBA_LOOP_DOWN:
5576 case MBA_LIP_RESET:
5577 case MBA_RSCN_UPDATE:
5578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5579 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5580 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5581 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5582 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5583 break;
5584
ead03855 5585 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5587 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5588 vha->vp_idx,
5589 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5590 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5591
5592 if (le16_to_cpu(mailbox[3]) == 1) {
5593 /* exchange starvation. */
5594 vha->hw->exch_starvation++;
5595 if (vha->hw->exch_starvation > 5) {
83548fe2 5596 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5597 "Exchange starvation-. Resetting RISC\n");
5598
5599 vha->hw->exch_starvation = 0;
5600 if (IS_P3P_TYPE(vha->hw))
5601 set_bit(FCOE_CTX_RESET_NEEDED,
5602 &vha->dpc_flags);
5603 else
5604 set_bit(ISP_ABORT_NEEDED,
5605 &vha->dpc_flags);
5606 qla2xxx_wake_dpc(vha);
5607 }
5608 }
5609 break;
5610
2d70c103
NB		 5611 case MBA_PORT_UPDATE:
5612 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5613 "qla_target(%d): Port update async event %#x "
6efb3c0a 5614 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5615 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5616 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5617 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5618
5619 login_code = le16_to_cpu(mailbox[2]);
ead03855 5620 if (login_code == 0x4) {
2d70c103
NB		 5621 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5622 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5623 vha->hw->exch_starvation = 0;
5624 } else if (login_code == 0x7)
2d70c103
NB		 5625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5626 "Async MB 2: Port Logged Out\n");
5627 break;
2d70c103 5628 default:
2d70c103
NB		 5629 break;
5630 }
5631
2d70c103
NB		 5632}
5633
5634static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5635 uint16_t loop_id)
5636{
726b8548 5637 fc_port_t *fcport, *tfcp, *del;
2d70c103 5638 int rc;
726b8548
QT		 5639 unsigned long flags;
5640 u8 newfcport = 0;
2d70c103
NB		 5641
5642 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5643 if (!fcport) {
5644 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5645 "qla_target(%d): Allocation of tmp FC port failed",
5646 vha->vp_idx);
5647 return NULL;
5648 }
5649
2d70c103
NB		 5650 fcport->loop_id = loop_id;
5651
15f30a57 5652 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5653 if (rc != QLA_SUCCESS) {
5654 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5655 "qla_target(%d): Failed to retrieve fcport "
5656 "information -- get_port_database() returned %x "
5657 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5658 kfree(fcport);
5659 return NULL;
5660 }
5661
726b8548
QT		 5662 del = NULL;
5663 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5664 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5665
5666 if (tfcp) {
5667 tfcp->d_id = fcport->d_id;
5668 tfcp->port_type = fcport->port_type;
5669 tfcp->supported_classes = fcport->supported_classes;
5670 tfcp->flags |= fcport->flags;
5671
5672 del = fcport;
5673 fcport = tfcp;
5674 } else {
5675 if (vha->hw->current_topology == ISP_CFG_F)
5676 fcport->flags |= FCF_FABRIC_DEVICE;
5677
5678 list_add_tail(&fcport->list, &vha->vp_fcports);
5679 if (!IS_SW_RESV_ADDR(fcport->d_id))
5680 vha->fcport_count++;
5681 fcport->login_gen++;
5682 fcport->disc_state = DSC_LOGIN_COMPLETE;
5683 fcport->login_succ = 1;
5684 newfcport = 1;
5685 }
5686
5687 fcport->deleted = 0;
5688 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5689
5690 switch (vha->host->active_mode) {
5691 case MODE_INITIATOR:
5692 case MODE_DUAL:
5693 if (newfcport) {
5694 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5695 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5696 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5697 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5698 qla24xx_post_upd_fcport_work(vha, fcport);
5699 } else {
83548fe2 5700 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5701 "%s %d %8phC post gpsc fcp_cnt %d\n",
5702 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5703 qla24xx_post_gpsc_work(vha, fcport);
5704 }
5705 }
5706 break;
5707
5708 case MODE_TARGET:
5709 default:
5710 break;
5711 }
5712 if (del)
5713 qla2x00_free_fcport(del);
5714
2d70c103
NB		 5715 return fcport;
5716}
5717
5718/* Must be called under tgt_mutex */
5d964837 5719static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5720 uint8_t *s_id)
5721{
5d964837 5722 struct fc_port *sess = NULL;
2d70c103
NB		 5723 fc_port_t *fcport = NULL;
5724 int rc, global_resets;
5725 uint16_t loop_id = 0;
5726
726b8548
QT		 5727 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5728 /*
5729 * This is Domain Controller, so it should be
5730 * OK to drop SCSI commands from it.
5731 */
5732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5733 "Unable to find initiator with S_ID %x:%x:%x",
5734 s_id[0], s_id[1], s_id[2]);
5735 return NULL;
5736 }
5737
71cdc079
AP		 5738 mutex_lock(&vha->vha_tgt.tgt_mutex);
5739
2d70c103 5740retry:
0e8cd71c
SK		 5741 global_resets =
5742 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5743
5744 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5745 if (rc != 0) {
71cdc079
AP		 5746 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5747
726b8548
QT		 5748 ql_log(ql_log_info, vha, 0xf071,
5749 "qla_target(%d): Unable to find "
5750 "initiator with S_ID %x:%x:%x",
5751 vha->vp_idx, s_id[0], s_id[1],
5752 s_id[2]);
71cdc079
AP		 5753
5754 if (rc == -ENOENT) {
5755 qlt_port_logo_t logo;
5756 sid_to_portid(s_id, &logo.id);
5757 logo.cmd_count = 1;
5758 qlt_send_first_logo(vha, &logo);
5759 }
5760
2d70c103
NB		 5761 return NULL;
5762 }
5763
5764 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5765 if (!fcport) {
5766 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5767 return NULL;
71cdc079 5768 }
2d70c103
NB		 5769
5770 if (global_resets !=
0e8cd71c 5771 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5773 "qla_target(%d): global reset during session discovery "
5774 "(counter was %d, new %d), retrying", vha->vp_idx,
5775 global_resets,
0e8cd71c
SK		 5776 atomic_read(&vha->vha_tgt.
5777 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5778 goto retry;
5779 }
5780
5781 sess = qlt_create_sess(vha, fcport, true);
5782
71cdc079
AP		 5783 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5784
2d70c103
NB		 5785 return sess;
5786}
5787
5788static void qlt_abort_work(struct qla_tgt *tgt,
5789 struct qla_tgt_sess_work_param *prm)
5790{
5791 struct scsi_qla_host *vha = tgt->vha;
5792 struct qla_hw_data *ha = vha->hw;
5d964837 5793 struct fc_port *sess = NULL;
7560151b 5794 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5795 uint32_t be_s_id;
5796 uint8_t s_id[3];
5797 int rc;
5798
7560151b 5799 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5800
5801 if (tgt->tgt_stop)
7560151b 5802 goto out_term2;
2d70c103
NB		 5803
5804 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5805 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5806 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5807
5808 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5809 (unsigned char *)&be_s_id);
5810 if (!sess) {
7560151b 5811 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5812
2d70c103
NB		 5813 sess = qlt_make_local_sess(vha, s_id);
5814 /* sess has got an extra creation ref */
2d70c103 5815
7560151b 5816 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5817 if (!sess)
7560151b 5818 goto out_term2;
2d70c103 5819 } else {
726b8548 5820 if (sess->deleted) {
e52a8b45 5821 sess = NULL;
7560151b 5822 goto out_term2;
e52a8b45
AP		 5823 }
5824
726b8548 5825 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5826 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 5827 "%s: kref_get fail %8phC \n",
5828 __func__, sess->port_name);
5829 sess = NULL;
5830 goto out_term2;
5831 }
2d70c103
NB		 5832 }
5833
2d70c103 5834 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 5835 ha->tgt.tgt_ops->put_sess(sess);
5836 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5837
2d70c103
NB		 5838 if (rc != 0)
5839 goto out_term;
2d70c103
NB		 5840 return;
5841
7560151b 5842out_term2:
f159b3c7
QT		 5843 if (sess)
5844 ha->tgt.tgt_ops->put_sess(sess);
5845 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 5846
2d70c103 5847out_term:
f159b3c7 5848 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5849 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
7560151b 5850 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5851}
5852
5853static void qlt_tmr_work(struct qla_tgt *tgt,
5854 struct qla_tgt_sess_work_param *prm)
5855{
5856 struct atio_from_isp *a = &prm->tm_iocb2;
5857 struct scsi_qla_host *vha = tgt->vha;
5858 struct qla_hw_data *ha = vha->hw;
5d964837 5859 struct fc_port *sess = NULL;
2d70c103
NB		 5860 unsigned long flags;
5861 uint8_t *s_id = NULL; /* to hide compiler warnings */
5862 int rc;
f775bd14 5863 u64 unpacked_lun;
52c82823 5864 int fn;
2d70c103
NB		 5865 void *iocb;
5866
7560151b 5867 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5868
5869 if (tgt->tgt_stop)
f159b3c7 5870 goto out_term2;
2d70c103
NB		 5871
5872 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5873 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5874 if (!sess) {
7560151b 5875 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5876
2d70c103
NB		 5877 sess = qlt_make_local_sess(vha, s_id);
5878 /* sess has got an extra creation ref */
2d70c103 5879
7560151b 5880 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 5881 if (!sess)
f159b3c7 5882 goto out_term2;
2d70c103 5883 } else {
726b8548 5884 if (sess->deleted) {
e52a8b45 5885 sess = NULL;
f159b3c7 5886 goto out_term2;
e52a8b45
AP		 5887 }
5888
726b8548 5889 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5890 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 5891 "%s: kref_get fail %8phC\n",
5892 __func__, sess->port_name);
5893 sess = NULL;
f159b3c7 5894 goto out_term2;
726b8548 5895 }
2d70c103
NB		 5896 }
5897
5898 iocb = a;
2d70c103 5899 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 5900 unpacked_lun =
5901 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 5902
5903 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 5904 ha->tgt.tgt_ops->put_sess(sess);
7560151b 5905 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 5906
5907 if (rc != 0)
5908 goto out_term;
2d70c103
NB		 5909 return;
5910
f159b3c7
QT		 5911out_term2:
5912 if (sess)
5913 ha->tgt.tgt_ops->put_sess(sess);
5914 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5915out_term:
a07100e0 5916 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 5917}
5918
5919static void qlt_sess_work_fn(struct work_struct *work)
5920{
5921 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
5922 struct scsi_qla_host *vha = tgt->vha;
5923 unsigned long flags;
5924
5925 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
5926
5927 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5928 while (!list_empty(&tgt->sess_works_list)) {
5929 struct qla_tgt_sess_work_param *prm = list_entry(
5930 tgt->sess_works_list.next, typeof(*prm),
5931 sess_works_list_entry);
5932
5933 /*
5934 * This work can be scheduled on several CPUs at time, so we
5935 * must delete the entry to eliminate double processing
5936 */
5937 list_del(&prm->sess_works_list_entry);
5938
5939 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5940
5941 switch (prm->type) {
5942 case QLA_TGT_SESS_WORK_ABORT:
5943 qlt_abort_work(tgt, prm);
5944 break;
5945 case QLA_TGT_SESS_WORK_TM:
5946 qlt_tmr_work(tgt, prm);
5947 break;
5948 default:
5949 BUG_ON(1);
5950 break;
5951 }
5952
5953 spin_lock_irqsave(&tgt->sess_work_lock, flags);
5954
5955 kfree(prm);
5956 }
5957 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
5958}
5959
5960/* Must be called under tgt_host_action_mutex */
5961int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
5962{
5963 struct qla_tgt *tgt;
5964
5965 if (!QLA_TGT_MODE_ENABLED())
5966 return 0;
5967
33c36c0a
AE		 5968 if (!IS_TGT_MODE_CAPABLE(ha)) {
5969 ql_log(ql_log_warn, base_vha, 0xe070,
5970 "This adapter does not support target mode.\n");
5971 return 0;
5972 }
5973
2d70c103 5974 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 5975 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 5976
0e8cd71c 5977 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 5978
5979 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
5980 if (!tgt) {
5981 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
5982 "Unable to allocate struct qla_tgt\n");
5983 return -ENOMEM;
5984 }
5985
5986 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
5987 base_vha->host->hostt->supported_mode |= MODE_TARGET;
5988
5989 tgt->ha = ha;
5990 tgt->vha = base_vha;
5991 init_waitqueue_head(&tgt->waitQ);
2d70c103 5992 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 5993 spin_lock_init(&tgt->sess_work_lock);
5994 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
5995 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 5996 atomic_set(&tgt->tgt_global_resets_count, 0);
5997
0e8cd71c 5998 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 5999
6000 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6001 "qla_target(%d): using 64 Bit PCI addressing",
6002 base_vha->vp_idx);
6003 tgt->tgt_enable_64bit_addr = 1;
6004 /* 3 is reserved */
6005 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
6006 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
6007 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
6008
6009 mutex_lock(&qla_tgt_mutex);
6010 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6011 mutex_unlock(&qla_tgt_mutex);
6012
f1443eeb
QT		 6013 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6014 ha->tgt.tgt_ops->add_target(base_vha);
6015
2d70c103
NB		 6016 return 0;
6017}
6018
6019/* Must be called under tgt_host_action_mutex */
6020int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6021{
0e8cd71c 6022 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6023 return 0;
6024
ddb95145
NB		 6025 if (vha->fc_vport) {
6026 qlt_release(vha->vha_tgt.qla_tgt);
6027 return 0;
6028 }
33e79977
QT		 6029
6030 /* free left over qfull cmds */
6031 qlt_init_term_exchange(vha);
6032
2d70c103 6033 mutex_lock(&qla_tgt_mutex);
0e8cd71c 6034 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 6035 mutex_unlock(&qla_tgt_mutex);
6036
6037 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6038 vha->host_no, ha);
0e8cd71c 6039 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6040
6041 return 0;
6042}
6043
482c9dc7
QT		 6044void qlt_remove_target_resources(struct qla_hw_data *ha)
6045{
6046 struct scsi_qla_host *node;
6047 u32 key = 0;
6048
6049 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6050 btree_remove32(&ha->tgt.host_map, key);
6051
6052 btree_destroy32(&ha->tgt.host_map);
6053}
6054
2d70c103
NB		 6055static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6056 unsigned char *b)
6057{
6058 int i;
6059
6060 pr_debug("qla2xxx HW vha->node_name: ");
6061 for (i = 0; i < WWN_SIZE; i++)
6062 pr_debug("%02x ", vha->node_name[i]);
6063 pr_debug("\n");
6064 pr_debug("qla2xxx HW vha->port_name: ");
6065 for (i = 0; i < WWN_SIZE; i++)
6066 pr_debug("%02x ", vha->port_name[i]);
6067 pr_debug("\n");
6068
6069 pr_debug("qla2xxx passed configfs WWPN: ");
6070 put_unaligned_be64(wwpn, b);
6071 for (i = 0; i < WWN_SIZE; i++)
6072 pr_debug("%02x ", b[i]);
6073 pr_debug("\n");
6074}
6075
6076/**
6077 * qla_tgt_lport_register - register lport with external module
6078 *
6079 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6080 * @wwpn: Passwd FC target WWPN
6081 * @callback: lport initialization callback for tcm_qla2xxx code
6082 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6083 */
49a47f2c
NB		 6084int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6085 u64 npiv_wwpn, u64 npiv_wwnn,
6086 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6087{
6088 struct qla_tgt *tgt;
6089 struct scsi_qla_host *vha;
6090 struct qla_hw_data *ha;
6091 struct Scsi_Host *host;
6092 unsigned long flags;
6093 int rc;
6094 u8 b[WWN_SIZE];
6095
6096 mutex_lock(&qla_tgt_mutex);
6097 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6098 vha = tgt->vha;
6099 ha = vha->hw;
6100
6101 host = vha->host;
6102 if (!host)
6103 continue;
6104
2d70c103
NB		 6105 if (!(host->hostt->supported_mode & MODE_TARGET))
6106 continue;
6107
6108 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6109 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6110 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6111 host->host_no);
6112 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6113 continue;
6114 }
ddb95145
NB		 6115 if (tgt->tgt_stop) {
6116 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6117 host->host_no);
6118 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6119 continue;
6120 }
2d70c103
NB		 6121 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6122
6123 if (!scsi_host_get(host)) {
6124 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6125 "Unable to scsi_host_get() for"
6126 " qla2xxx scsi_host\n");
6127 continue;
6128 }
49a47f2c 6129 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6130
6131 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6132 scsi_host_put(host);
6133 continue;
6134 }
49a47f2c
NB		 6135 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6136 if (rc != 0)
6137 scsi_host_put(host);
6138
ddb95145 6139 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6140 return rc;
6141 }
6142 mutex_unlock(&qla_tgt_mutex);
6143
6144 return -ENODEV;
6145}
6146EXPORT_SYMBOL(qlt_lport_register);
6147
6148/**
6149 * qla_tgt_lport_deregister - Degister lport
6150 *
6151 * @vha: Registered scsi_qla_host pointer
6152 */
6153void qlt_lport_deregister(struct scsi_qla_host *vha)
6154{
6155 struct qla_hw_data *ha = vha->hw;
6156 struct Scsi_Host *sh = vha->host;
6157 /*
6158 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6159 */
0e8cd71c 6160 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6161 ha->tgt.tgt_ops = NULL;
6162 /*
6163 * Release the Scsi_Host reference for the underlying qla2xxx host
6164 */
6165 scsi_host_put(sh);
6166}
6167EXPORT_SYMBOL(qlt_lport_deregister);
6168
6169/* Must be called under HW lock */
55a9066f 6170static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6171{
2d70c103
NB		 6172 switch (ql2x_ini_mode) {
6173 case QLA2XXX_INI_MODE_DISABLED:
6174 case QLA2XXX_INI_MODE_EXCLUSIVE:
6175 vha->host->active_mode = MODE_TARGET;
6176 break;
6177 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6178 vha->host->active_mode = MODE_UNKNOWN;
6179 break;
6180 case QLA2XXX_INI_MODE_DUAL:
6181 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6182 break;
6183 default:
6184 break;
6185 }
2d70c103
NB		 6186}
6187
6188/* Must be called under HW lock */
55a9066f 6189static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6190{
2d70c103
NB		 6191 switch (ql2x_ini_mode) {
6192 case QLA2XXX_INI_MODE_DISABLED:
6193 vha->host->active_mode = MODE_UNKNOWN;
6194 break;
6195 case QLA2XXX_INI_MODE_EXCLUSIVE:
6196 vha->host->active_mode = MODE_INITIATOR;
6197 break;
6198 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6199 case QLA2XXX_INI_MODE_DUAL:
6200 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6201 break;
6202 default:
6203 break;
6204 }
2d70c103
NB		 6205}
6206
6207/*
6208 * qla_tgt_enable_vha - NO LOCK HELD
6209 *
6210 * host_reset, bring up w/ Target Mode Enabled
6211 */
6212void
6213qlt_enable_vha(struct scsi_qla_host *vha)
6214{
6215 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6216 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6217 unsigned long flags;
0e8cd71c 6218 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
cdb898c5 6219 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER;
2d70c103
NB		 6220
6221 if (!tgt) {
6222 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6223 "Unable to locate qla_tgt pointer from"
6224 " struct qla_hw_data\n");
6225 dump_stack();
6226 return;
6227 }
6228
6229 spin_lock_irqsave(&ha->hardware_lock, flags);
6230 tgt->tgt_stopped = 0;
6231 qlt_set_mode(vha);
6232 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6233
0e8cd71c
SK		 6234 if (vha->vp_idx) {
6235 qla24xx_disable_vp(vha);
6236 qla24xx_enable_vp(vha);
6237 } else {
cdb898c5 6238 if (ha->msix_entries) {
83548fe2 6239 ql_dbg(ql_dbg_tgt, vha, 0xe081,
cdb898c5
QT		 6240 "%s: host%ld : vector %d cpu %d\n",
6241 __func__, vha->host_no,
6242 ha->msix_entries[rspq_ent].vector,
6243 ha->msix_entries[rspq_ent].cpuid);
6244
6245 ha->tgt.rspq_vector_cpuid =
6246 ha->msix_entries[rspq_ent].cpuid;
6247 }
6248
0e8cd71c
SK		 6249 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6250 qla2xxx_wake_dpc(base_vha);
6251 qla2x00_wait_for_hba_online(base_vha);
6252 }
2d70c103
NB		 6253}
6254EXPORT_SYMBOL(qlt_enable_vha);
6255
6256/*
6257 * qla_tgt_disable_vha - NO LOCK HELD
6258 *
6259 * Disable Target Mode and reset the adapter
6260 */
55a9066f 6261static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6262{
6263 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6265 unsigned long flags;
6266
6267 if (!tgt) {
6268 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6269 "Unable to locate qla_tgt pointer from"
6270 " struct qla_hw_data\n");
6271 dump_stack();
6272 return;
6273 }
6274
6275 spin_lock_irqsave(&ha->hardware_lock, flags);
6276 qlt_clear_mode(vha);
6277 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6278
6279 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6280 qla2xxx_wake_dpc(vha);
6281 qla2x00_wait_for_hba_online(vha);
6282}
6283
6284/*
6285 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6286 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6287 * members.
6288 */
6289void
6290qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6291{
0e8cd71c
SK		 6292 vha->vha_tgt.qla_tgt = NULL;
6293
6294 mutex_init(&vha->vha_tgt.tgt_mutex);
6295 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6296
6297 qlt_clear_mode(vha);
6298
6299 /*
6300 * NOTE: Currently the value is kept the same for <24xx and
6301 * >=24xx ISPs. If it is necessary to change it,
6302 * the check should be added for specific ISPs,
6303 * assigning the value appropriately.
6304 */
6305 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6306
6307 qlt_add_target(ha, vha);
2d70c103
NB		 6308}
6309
6310void
6311qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6312{
6313 /*
6314 * FC-4 Feature bit 0 indicates target functionality to the name server.
6315 */
6316 if (qla_tgt_mode_enabled(vha)) {
726b8548 6317 ct_req->req.rff_id.fc4_feature = BIT_0;
2d70c103
NB		 6318 } else if (qla_ini_mode_enabled(vha)) {
6319 ct_req->req.rff_id.fc4_feature = BIT_1;
726b8548
QT		 6320 } else if (qla_dual_mode_enabled(vha))
6321 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
2d70c103
NB		 6322}
6323
6324/*
6325 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6326 * @ha: HA context
6327 *
6328 * Beginning of ATIO ring has initialization control block already built
6329 * by nvram config routine.
6330 *
6331 * Returns 0 on success.
6332 */
6333void
6334qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6335{
6336 struct qla_hw_data *ha = vha->hw;
6337 uint16_t cnt;
6338 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6339
ead03855 6340 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6341 return;
6342
6343 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6344 pkt->u.raw.signature = ATIO_PROCESSED;
6345 pkt++;
6346 }
6347
6348}
6349
6350/*
6351 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6352 * @ha: SCSI driver HA context
6353 */
6354void
2f424b9b 6355qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6356{
6357 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6358 struct atio_from_isp *pkt;
6359 int cnt, i;
6360
ec7193e2 6361 if (!ha->flags.fw_started)
2d70c103
NB		 6362 return;
6363
5f35509d
QT		 6364 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6365 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6366 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6367 cnt = pkt->u.raw.entry_count;
6368
5f35509d
QT		 6369 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6370 /*
6371 * This packet is corrupted. The header + payload
6372 * can not be trusted. There is no point in passing
6373 * it further up.
6374 */
83548fe2 6375 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6376 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6377 pkt->u.isp24.fcp_hdr.s_id,
6378 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6379 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6380
6381 adjust_corrupted_atio(pkt);
6382 qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0);
6383 } else {
6384 qlt_24xx_atio_pkt_all_vps(vha,
6385 (struct atio_from_isp *)pkt, ha_locked);
6386 }
2d70c103
NB		 6387
6388 for (i = 0; i < cnt; i++) {
6389 ha->tgt.atio_ring_index++;
6390 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6391 ha->tgt.atio_ring_index = 0;
6392 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6393 } else
6394 ha->tgt.atio_ring_ptr++;
6395
6396 pkt->u.raw.signature = ATIO_PROCESSED;
6397 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6398 }
6399 wmb();
6400 }
6401
6402 /* Adjust ring index */
aa230bc5 6403 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6404 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6405}
6406
6407void
aa230bc5 6408qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6409{
6410 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6411 if (!QLA_TGT_MODE_ENABLED())
6412 return;
2d70c103 6413
aa230bc5
AE		 6414 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6415 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6416 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6417
6418 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6419 struct qla_msix_entry *msix = &ha->msix_entries[2];
6420 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6421
6422 icb->msix_atio = cpu_to_le16(msix->entry);
6423 ql_dbg(ql_dbg_init, vha, 0xf072,
6424 "Registering ICB vector 0x%x for atio que.\n",
6425 msix->entry);
2d70c103
NB		 6426 }
6427}
6428
6429void
6430qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6431{
6432 struct qla_hw_data *ha = vha->hw;
99e1b683
QT		 6433
6434 if (!QLA_TGT_MODE_ENABLED())
6435 return;
2d70c103 6436
ead03855 6437 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6438 if (!ha->tgt.saved_set) {
6439 /* We save only once */
6440 ha->tgt.saved_exchange_count = nv->exchange_count;
6441 ha->tgt.saved_firmware_options_1 =
6442 nv->firmware_options_1;
6443 ha->tgt.saved_firmware_options_2 =
6444 nv->firmware_options_2;
6445 ha->tgt.saved_firmware_options_3 =
6446 nv->firmware_options_3;
6447 ha->tgt.saved_set = 1;
6448 }
6449
99e1b683 6450 if (qla_tgt_mode_enabled(vha))
ead03855 6451 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6452 else /* dual */
6453 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6454
6455 /* Enable target mode */
ad950360 6456 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6457
6458 /* Disable ini mode, if requested */
726b8548 6459 if (qla_tgt_mode_enabled(vha))
ad950360 6460 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6461
6462 /* Disable Full Login after LIP */
ad950360 6463 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6464 /* Enable initial LIP */
ad950360 6465 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6466 if (ql2xtgt_tape_enable)
6467 /* Enable FC Tape support */
6468 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6469 else
6470 /* Disable FC Tape support */
6471 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6472
2d70c103 6473 /* Disable Full Login after LIP */
ad950360 6474 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6475
6476 /*
6477 * clear BIT 15 explicitly as we have seen at least
6478 * a couple of instances where this was set and this
6479 * was causing the firmware to not be initialized.
6480 */
6481 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6482 /* Enable target PRLI control */
ad950360 6483 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6484 } else {
6485 if (ha->tgt.saved_set) {
6486 nv->exchange_count = ha->tgt.saved_exchange_count;
6487 nv->firmware_options_1 =
6488 ha->tgt.saved_firmware_options_1;
6489 nv->firmware_options_2 =
6490 ha->tgt.saved_firmware_options_2;
6491 nv->firmware_options_3 =
6492 ha->tgt.saved_firmware_options_3;
6493 }
6494 return;
6495 }
6496
2d70c103
NB		 6497 if (ha->tgt.enable_class_2) {
6498 if (vha->flags.init_done)
6499 fc_host_supported_classes(vha->host) =
6500 FC_COS_CLASS2 | FC_COS_CLASS3;
6501
ad950360 6502 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6503 } else {
6504 if (vha->flags.init_done)
6505 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6506
ad950360 6507 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6508 }
6509}
6510
6511void
6512qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6513 struct init_cb_24xx *icb)
6514{
6515 struct qla_hw_data *ha = vha->hw;
6516
481ce733
QT		 6517 if (!QLA_TGT_MODE_ENABLED())
6518 return;
6519
2d70c103
NB		 6520 if (ha->tgt.node_name_set) {
6521 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6522 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6523 }
481ce733
QT		 6524
6525 /* disable ZIO at start time. */
6526 if (!vha->flags.init_done) {
6527 uint32_t tmp;
6528 tmp = le32_to_cpu(icb->firmware_options_2);
6529 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6530 icb->firmware_options_2 = cpu_to_le32(tmp);
6531 }
2d70c103
NB		 6532}
6533
aa230bc5
AE		 6534void
6535qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6536{
6537 struct qla_hw_data *ha = vha->hw;
6538
6539 if (!QLA_TGT_MODE_ENABLED())
6540 return;
6541
ead03855 6542 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6543 if (!ha->tgt.saved_set) {
6544 /* We save only once */
6545 ha->tgt.saved_exchange_count = nv->exchange_count;
6546 ha->tgt.saved_firmware_options_1 =
6547 nv->firmware_options_1;
6548 ha->tgt.saved_firmware_options_2 =
6549 nv->firmware_options_2;
6550 ha->tgt.saved_firmware_options_3 =
6551 nv->firmware_options_3;
6552 ha->tgt.saved_set = 1;
6553 }
6554
99e1b683 6555 if (qla_tgt_mode_enabled(vha))
ead03855 6556 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6557 else /* dual */
6558 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6559
6560 /* Enable target mode */
ad950360 6561 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6562
6563 /* Disable ini mode, if requested */
726b8548 6564 if (qla_tgt_mode_enabled(vha))
ad950360 6565 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6566 /* Disable Full Login after LIP */
ad950360 6567 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6568 /* Enable initial LIP */
ad950360 6569 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6570 /*
6571 * clear BIT 15 explicitly as we have seen at
6572 * least a couple of instances where this was set
6573 * and this was causing the firmware to not be
6574 * initialized.
6575 */
6576 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6577 if (ql2xtgt_tape_enable)
6578 /* Enable FC tape support */
6579 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6580 else
6581 /* Disable FC tape support */
6582 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6583
aa230bc5 6584 /* Disable Full Login after LIP */
ad950360 6585 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6586 /* Enable target PRLI control */
ad950360 6587 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6588 } else {
6589 if (ha->tgt.saved_set) {
6590 nv->exchange_count = ha->tgt.saved_exchange_count;
6591 nv->firmware_options_1 =
6592 ha->tgt.saved_firmware_options_1;
6593 nv->firmware_options_2 =
6594 ha->tgt.saved_firmware_options_2;
6595 nv->firmware_options_3 =
6596 ha->tgt.saved_firmware_options_3;
6597 }
6598 return;
6599 }
6600
aa230bc5
AE		 6601 if (ha->tgt.enable_class_2) {
6602 if (vha->flags.init_done)
6603 fc_host_supported_classes(vha->host) =
6604 FC_COS_CLASS2 | FC_COS_CLASS3;
6605
ad950360 6606 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6607 } else {
6608 if (vha->flags.init_done)
6609 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6610
ad950360 6611 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6612 }
6613}
6614
6615void
6616qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6617 struct init_cb_81xx *icb)
6618{
6619 struct qla_hw_data *ha = vha->hw;
6620
6621 if (!QLA_TGT_MODE_ENABLED())
6622 return;
6623
6624 if (ha->tgt.node_name_set) {
6625 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6626 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6627 }
481ce733
QT		 6628
6629 /* disable ZIO at start time. */
6630 if (!vha->flags.init_done) {
6631 uint32_t tmp;
6632 tmp = le32_to_cpu(icb->firmware_options_2);
6633 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6634 icb->firmware_options_2 = cpu_to_le32(tmp);
6635 }
6636
aa230bc5
AE		 6637}
6638
6639void
6640qlt_83xx_iospace_config(struct qla_hw_data *ha)
6641{
6642 if (!QLA_TGT_MODE_ENABLED())
6643 return;
6644
6645 ha->msix_count += 1; /* For ATIO Q */
6646}
6647
2d70c103
NB		 6648int
6649qlt_24xx_process_response_error(struct scsi_qla_host *vha,
6650 struct sts_entry_24xx *pkt)
6651{
6652 switch (pkt->entry_type) {
6653 case ABTS_RECV_24XX:
6654 case ABTS_RESP_24XX:
6655 case CTIO_TYPE7:
6656 case NOTIFY_ACK_TYPE:
f83adb61 6657 case CTIO_CRC2:
2d70c103
NB		 6658 return 1;
6659 default:
6660 return 0;
6661 }
6662}
6663
6664void
6665qlt_modify_vp_config(struct scsi_qla_host *vha,
6666 struct vp_config_entry_24xx *vpmod)
6667{
ead03855
QT		 6668 /* enable target mode. Bit5 = 1 => disable */
6669 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6670 vpmod->options_idx1 &= ~BIT_5;
726b8548 6671
ead03855 6672 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6673 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6674 vpmod->options_idx1 &= ~BIT_4;
6675}
6676
6677void
6678qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6679{
482c9dc7
QT		 6680 int rc;
6681
2d70c103
NB		 6682 if (!QLA_TGT_MODE_ENABLED())
6683 return;
6684
b20f02e1 6685 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6686 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6687 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6688 } else {
6689 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6690 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6691 }
6692
0e8cd71c
SK		 6693 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6694 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6695
6696 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6697 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6698 qlt_unknown_atio_work_fn);
6699
2d70c103 6700 qlt_clear_mode(base_vha);
482c9dc7
QT		 6701
6702 rc = btree_init32(&ha->tgt.host_map);
6703 if (rc)
83548fe2 6704 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6705 "Unable to initialize ha->host_map btree\n");
6706
6707 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6708}
6709
aa230bc5
AE		 6710irqreturn_t
6711qla83xx_msix_atio_q(int irq, void *dev_id)
6712{
6713 struct rsp_que *rsp;
6714 scsi_qla_host_t *vha;
6715 struct qla_hw_data *ha;
6716 unsigned long flags;
6717
6718 rsp = (struct rsp_que *) dev_id;
6719 ha = rsp->hw;
6720 vha = pci_get_drvdata(ha->pdev);
6721
2f424b9b 6722 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6723
2f424b9b 6724 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6725
2f424b9b 6726 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6727
6728 return IRQ_HANDLED;
6729}
6730
2f424b9b
QT		 6731static void
6732qlt_handle_abts_recv_work(struct work_struct *work)
6733{
6734 struct qla_tgt_sess_op *op = container_of(work,
6735 struct qla_tgt_sess_op, work);
6736 scsi_qla_host_t *vha = op->vha;
6737 struct qla_hw_data *ha = vha->hw;
6738 unsigned long flags;
6739
6740 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset))
6741 return;
6742
6743 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6744 qlt_24xx_process_atio_queue(vha, 0);
6745 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6746
6747 spin_lock_irqsave(&ha->hardware_lock, flags);
6748 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio);
6749 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6750
6751 kfree(op);
2f424b9b
QT		 6752}
6753
6754void
6755qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt)
6756{
6757 struct qla_tgt_sess_op *op;
6758
6759 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6760
6761 if (!op) {
6762 /* do not reach for ATIO queue here. This is best effort err
6763 * recovery at this point.
6764 */
6765 qlt_response_pkt_all_vps(vha, pkt);
6766 return;
6767 }
6768
6769 memcpy(&op->atio, pkt, sizeof(*pkt));
6770 op->vha = vha;
6771 op->chip_reset = vha->hw->chip_reset;
6772 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6773 queue_work(qla_tgt_wq, &op->work);
6774 return;
6775}
6776
2d70c103
NB		 6777int
6778qlt_mem_alloc(struct qla_hw_data *ha)
6779{
6780 if (!QLA_TGT_MODE_ENABLED())
6781 return 0;
6782
6783 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6784 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6785 if (!ha->tgt.tgt_vp_map)
6786 return -ENOMEM;
6787
6788 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6789 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6790 &ha->tgt.atio_dma, GFP_KERNEL);
6791 if (!ha->tgt.atio_ring) {
6792 kfree(ha->tgt.tgt_vp_map);
6793 return -ENOMEM;
6794 }
6795 return 0;
6796}
6797
6798void
6799qlt_mem_free(struct qla_hw_data *ha)
6800{
6801 if (!QLA_TGT_MODE_ENABLED())
6802 return;
6803
6804 if (ha->tgt.atio_ring) {
6805 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6806 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6807 ha->tgt.atio_dma);
6808 }
6809 kfree(ha->tgt.tgt_vp_map);
6810}
6811
6812/* vport_slock to be held by the caller */
6813void
6814qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6815{
482c9dc7
QT		 6816 void *slot;
6817 u32 key;
6818 int rc;
6819
2d70c103
NB		 6820 if (!QLA_TGT_MODE_ENABLED())
6821 return;
6822
482c9dc7
QT		 6823 key = vha->d_id.b24;
6824
2d70c103
NB		 6825 switch (cmd) {
6826 case SET_VP_IDX:
6827 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6828 break;
6829 case SET_AL_PA:
482c9dc7
QT		 6830 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6831 if (!slot) {
83548fe2 6832 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 6833 "Save vha in host_map %p %06x\n", vha, key);
6834 rc = btree_insert32(&vha->hw->tgt.host_map,
6835 key, vha, GFP_ATOMIC);
6836 if (rc)
83548fe2 6837 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 6838 "Unable to insert s_id into host_map: %06x\n",
6839 key);
6840 return;
6841 }
83548fe2
QT		 6842 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
6843 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 6844 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 6845 break;
6846 case RESET_VP_IDX:
6847 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6848 break;
6849 case RESET_AL_PA:
83548fe2 6850 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 6851 "clear vha in host_map %p %06x\n", vha, key);
6852 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6853 if (slot)
6854 btree_remove32(&vha->hw->tgt.host_map, key);
6855 vha->d_id.b24 = 0;
2d70c103
NB		 6856 break;
6857 }
6858}
6859
482c9dc7
QT		 6860void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
6861{
6862 unsigned long flags;
6863 struct qla_hw_data *ha = vha->hw;
6864
6865 if (!vha->d_id.b24) {
6866 spin_lock_irqsave(&ha->vport_slock, flags);
6867 vha->d_id = id;
6868 qlt_update_vp_map(vha, SET_AL_PA);
6869 spin_unlock_irqrestore(&ha->vport_slock, flags);
6870 } else if (vha->d_id.b24 != id.b24) {
6871 spin_lock_irqsave(&ha->vport_slock, flags);
6872 qlt_update_vp_map(vha, RESET_AL_PA);
6873 vha->d_id = id;
6874 qlt_update_vp_map(vha, SET_AL_PA);
6875 spin_unlock_irqrestore(&ha->vport_slock, flags);
6876 }
6877}
6878
2d70c103
NB		 6879static int __init qlt_parse_ini_mode(void)
6880{
6881 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
6882 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
6883 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
6884 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
6885 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
6886 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 6887 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
6888 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 6889 else
6890 return false;
6891
6892 return true;
6893}
6894
6895int __init qlt_init(void)
6896{
6897 int ret;
6898
6899 if (!qlt_parse_ini_mode()) {
6900 ql_log(ql_log_fatal, NULL, 0xe06b,
6901 "qlt_parse_ini_mode() failed\n");
6902 return -EINVAL;
6903 }
6904
6905 if (!QLA_TGT_MODE_ENABLED())
6906 return 0;
6907
2d70c103
NB		 6908 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
6909 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
6910 qla_tgt_mgmt_cmd), 0, NULL);
6911 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 6912 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 6913 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 6914 return -ENOMEM;
2d70c103
NB		 6915 }
6916
b7bd104e 6917 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 6918 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
6919 0, NULL);
b7bd104e
AP		 6920
6921 if (!qla_tgt_plogi_cachep) {
6922 ql_log(ql_log_fatal, NULL, 0xe06d,
6923 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
6924 ret = -ENOMEM;
6925 goto out_mgmt_cmd_cachep;
6926 }
6927
2d70c103
NB		 6928 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
6929 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
6930 if (!qla_tgt_mgmt_cmd_mempool) {
6931 ql_log(ql_log_fatal, NULL, 0xe06e,
6932 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
6933 ret = -ENOMEM;
b7bd104e 6934 goto out_plogi_cachep;
2d70c103
NB		 6935 }
6936
6937 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
6938 if (!qla_tgt_wq) {
6939 ql_log(ql_log_fatal, NULL, 0xe06f,
6940 "alloc_workqueue for qla_tgt_wq failed\n");
6941 ret = -ENOMEM;
6942 goto out_cmd_mempool;
6943 }
6944 /*
6945 * Return 1 to signal that initiator-mode is being disabled
6946 */
6947 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
6948
6949out_cmd_mempool:
6950 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 6951out_plogi_cachep:
6952 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 6953out_mgmt_cmd_cachep:
6954 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 6955 return ret;
6956}
6957
6958void qlt_exit(void)
6959{
6960 if (!QLA_TGT_MODE_ENABLED())
6961 return;
6962
6963 destroy_workqueue(qla_tgt_wq);
6964 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 6965 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 6966 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 6967}
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