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scsi: qla2xxx: Remove datasegs_per_cmd and datasegs_per_cont field
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
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
09620eeb
QT		 69int ql2xuctrlirq = 1;
70module_param(ql2xuctrlirq, int, 0644);
71MODULE_PARM_DESC(ql2xuctrlirq,
72 "User to control IRQ placement via smp_affinity."
73 "Valid with qlini_mode=disabled."
74 "1(default): enable");
75
aa230bc5 76int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 77
33e79977
QT		 78static int temp_sam_status = SAM_STAT_BUSY;
79
2d70c103
NB		 80/*
81 * From scsi/fc/fc_fcp.h
82 */
83enum fcp_resp_rsp_codes {
84 FCP_TMF_CMPL = 0,
85 FCP_DATA_LEN_INVALID = 1,
86 FCP_CMND_FIELDS_INVALID = 2,
87 FCP_DATA_PARAM_MISMATCH = 3,
88 FCP_TMF_REJECTED = 4,
89 FCP_TMF_FAILED = 5,
90 FCP_TMF_INVALID_LUN = 9,
91};
92
93/*
94 * fc_pri_ta from scsi/fc/fc_fcp.h
95 */
96#define FCP_PTA_SIMPLE 0 /* simple task attribute */
97#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
98#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 99#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 100#define FCP_PTA_MASK 7 /* mask for task attribute field */
101#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
102#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
103
104/*
105 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
106 * must be called under HW lock and could unlock/lock it inside.
107 * It isn't an issue, since in the current implementation on the time when
108 * those functions are called:
109 *
110 * - Either context is IRQ and only IRQ handler can modify HW data,
111 * including rings related fields,
112 *
113 * - Or access to target mode variables from struct qla_tgt doesn't
114 * cross those functions boundaries, except tgt_stop, which
115 * additionally protected by irq_cmd_count.
116 */
117/* Predefs for callbacks handed to qla2xxx LLD */
118static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 119 struct atio_from_isp *pkt, uint8_t);
82de802a
QT		 120static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
121 response_t *pkt);
5d964837 122static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103 123 int fn, void *iocb, int flags);
82de802a 124static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
a07100e0 125 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
33e79977
QT		 126static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
127 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 128static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 129static void qlt_clear_tgt_db(struct qla_tgt *tgt);
82de802a 130static void qlt_send_notify_ack(struct qla_qpair *qpair,
a6ca8878
AP		 131 struct imm_ntfy_from_isp *ntfy,
132 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
133 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 134static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
135 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 136static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
137 fc_port_t *fcport, bool local);
138void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 139static void qlt_24xx_handle_abts(struct scsi_qla_host *,
140 struct abts_recv_from_24xx *);
82de802a
QT		 141static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
142 uint16_t);
8f6fc8d4 143
2d70c103
NB		 144/*
145 * Global Variables
146 */
2d70c103 147static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b7bd104e 148static struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 149static mempool_t *qla_tgt_mgmt_cmd_mempool;
150static struct workqueue_struct *qla_tgt_wq;
151static DEFINE_MUTEX(qla_tgt_mutex);
152static LIST_HEAD(qla_tgt_glist);
153
be25152c
QT		 154static const char *prot_op_str(u32 prot_op)
155{
156 switch (prot_op) {
157 case TARGET_PROT_NORMAL: return "NORMAL";
158 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
159 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
160 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
161 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
162 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
163 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
164 default: return "UNKNOWN";
165 }
166}
167
df673274
AP		 168/* This API intentionally takes dest as a parameter, rather than returning
169 * int value to avoid caller forgetting to issue wmb() after the store */
170void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
171{
172 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
173 *dest = atomic_inc_return(&base_vha->generation_tick);
174 /* memory barrier */
175 wmb();
176}
177
2d70c103
NB		 178/* Might release hw lock, then reaquire!! */
179static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
180{
181 /* Send marker if required */
182 if (unlikely(vha->marker_needed != 0)) {
183 int rc = qla2x00_issue_marker(vha, vha_locked);
184 if (rc != QLA_SUCCESS) {
185 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
186 "qla_target(%d): issue_marker() failed\n",
187 vha->vp_idx);
188 }
189 return rc;
190 }
191 return QLA_SUCCESS;
192}
193
194static inline
195struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
196 uint8_t *d_id)
197{
482c9dc7
QT		 198 struct scsi_qla_host *host;
199 uint32_t key = 0;
2d70c103 200
482c9dc7
QT		 201 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
202 (vha->d_id.b.al_pa == d_id[2]))
2d70c103
NB		 203 return vha;
204
482c9dc7
QT		 205 key = (uint32_t)d_id[0] << 16;
206 key |= (uint32_t)d_id[1] << 8;
207 key |= (uint32_t)d_id[2];
2d70c103 208
482c9dc7
QT		 209 host = btree_lookup32(&vha->hw->tgt.host_map, key);
210 if (!host)
83548fe2
QT		 211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
212 "Unable to find host %06x\n", key);
482c9dc7
QT		 213
214 return host;
2d70c103
NB		 215}
216
217static inline
218struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
219 uint16_t vp_idx)
220{
221 struct qla_hw_data *ha = vha->hw;
222
223 if (vha->vp_idx == vp_idx)
224 return vha;
225
226 BUG_ON(ha->tgt.tgt_vp_map == NULL);
227 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
228 return ha->tgt.tgt_vp_map[vp_idx].vha;
229
230 return NULL;
231}
232
33e79977
QT		 233static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
234{
235 unsigned long flags;
236
237 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
238
239 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 240 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
241 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 242 vha->hw->tgt.num_pend_cmds;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244}
245static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
246{
247 unsigned long flags;
248
249 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
250 vha->hw->tgt.num_pend_cmds--;
251 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
252}
253
41dc529a
QT		 254
255static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
82de802a 256 struct atio_from_isp *atio, uint8_t ha_locked)
41dc529a
QT		 257{
258 struct qla_tgt_sess_op *u;
259 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
260 unsigned long flags;
261
262 if (tgt->tgt_stop) {
83548fe2
QT		 263 ql_dbg(ql_dbg_async, vha, 0x502c,
264 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
265 vha->vp_idx);
41dc529a
QT		 266 goto out_term;
267 }
268
269 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 270 if (u == NULL)
41dc529a 271 goto out_term;
41dc529a
QT		 272
273 u->vha = vha;
274 memcpy(&u->atio, atio, sizeof(*atio));
275 INIT_LIST_HEAD(&u->cmd_list);
276
277 spin_lock_irqsave(&vha->cmd_list_lock, flags);
278 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
279 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
280
281 schedule_delayed_work(&vha->unknown_atio_work, 1);
282
283out:
284 return;
285
286out_term:
82de802a 287 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
41dc529a
QT		 288 goto out;
289}
290
291static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
292 uint8_t ha_locked)
293{
294 struct qla_tgt_sess_op *u, *t;
295 scsi_qla_host_t *host;
296 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
297 unsigned long flags;
298 uint8_t queued = 0;
299
300 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
301 if (u->aborted) {
83548fe2
QT		 302 ql_dbg(ql_dbg_async, vha, 0x502e,
303 "Freeing unknown %s %p, because of Abort\n",
41dc529a 304 "ATIO_TYPE7", u);
82de802a
QT		 305 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
306 &u->atio, ha_locked, 0);
41dc529a
QT		 307 goto abort;
308 }
309
310 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
311 if (host != NULL) {
83548fe2
QT		 312 ql_dbg(ql_dbg_async, vha, 0x502f,
313 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 314 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
315 } else if (tgt->tgt_stop) {
83548fe2
QT		 316 ql_dbg(ql_dbg_async, vha, 0x503a,
317 "Freeing unknown %s %p, because tgt is being stopped\n",
318 "ATIO_TYPE7", u);
82de802a
QT		 319 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
320 &u->atio, ha_locked, 0);
41dc529a 321 } else {
83548fe2
QT		 322 ql_dbg(ql_dbg_async, vha, 0x503d,
323 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 324 if (!queued) {
325 queued = 1;
326 schedule_delayed_work(&vha->unknown_atio_work,
327 1);
328 }
329 continue;
330 }
331
332abort:
333 spin_lock_irqsave(&vha->cmd_list_lock, flags);
334 list_del(&u->cmd_list);
335 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
336 kfree(u);
337 }
338}
339
340void qlt_unknown_atio_work_fn(struct work_struct *work)
341{
342 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
343 struct scsi_qla_host, unknown_atio_work);
344
345 qlt_try_to_dequeue_unknown_atios(vha, 0);
346}
347
3bb67df5 348static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 349 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 350{
f83adb61
QT		 351 ql_dbg(ql_dbg_tgt, vha, 0xe072,
352 "%s: qla_target(%d): type %x ox_id %04x\n",
353 __func__, vha->vp_idx, atio->u.raw.entry_type,
354 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
355
2d70c103
NB		 356 switch (atio->u.raw.entry_type) {
357 case ATIO_TYPE7:
358 {
359 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
360 atio->u.isp24.fcp_hdr.d_id);
361 if (unlikely(NULL == host)) {
362 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
363 "qla_target(%d): Received ATIO_TYPE7 "
364 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
365 atio->u.isp24.fcp_hdr.d_id[0],
366 atio->u.isp24.fcp_hdr.d_id[1],
367 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 368
369
370 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 371 break;
372 }
41dc529a
QT		 373 if (unlikely(!list_empty(&vha->unknown_atio_list)))
374 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
375
2f424b9b 376 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 377 break;
378 }
379
380 case IMMED_NOTIFY_TYPE:
381 {
382 struct scsi_qla_host *host = vha;
383 struct imm_ntfy_from_isp *entry =
384 (struct imm_ntfy_from_isp *)atio;
385
82de802a
QT		 386 qlt_issue_marker(vha, ha_locked);
387
2d70c103
NB		 388 if ((entry->u.isp24.vp_index != 0xFF) &&
389 (entry->u.isp24.nport_handle != 0xFFFF)) {
390 host = qlt_find_host_by_vp_idx(vha,
391 entry->u.isp24.vp_index);
392 if (unlikely(!host)) {
393 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
394 "qla_target(%d): Received "
395 "ATIO (IMMED_NOTIFY_TYPE) "
396 "with unknown vp_index %d\n",
397 vha->vp_idx, entry->u.isp24.vp_index);
398 break;
399 }
400 }
2f424b9b 401 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 402 break;
403 }
404
41dc529a
QT		 405 case VP_RPT_ID_IOCB_TYPE:
406 qla24xx_report_id_acquisition(vha,
407 (struct vp_rpt_id_entry_24xx *)atio);
408 break;
409
410 case ABTS_RECV_24XX:
411 {
412 struct abts_recv_from_24xx *entry =
413 (struct abts_recv_from_24xx *)atio;
414 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
415 entry->vp_index);
8f6fc8d4
QT		 416 unsigned long flags;
417
41dc529a 418 if (unlikely(!host)) {
83548fe2 419 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 420 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
421 "received, with unknown vp_index %d\n",
422 vha->vp_idx, entry->vp_index);
423 break;
424 }
8f6fc8d4
QT		 425 if (!ha_locked)
426 spin_lock_irqsave(&host->hw->hardware_lock, flags);
427 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
428 if (!ha_locked)
429 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 430 break;
41dc529a
QT		 431 }
432
433 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
434
2d70c103
NB		 435 default:
436 ql_dbg(ql_dbg_tgt, vha, 0xe040,
437 "qla_target(%d): Received unknown ATIO atio "
438 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
439 break;
440 }
441
3bb67df5 442 return false;
2d70c103
NB		 443}
444
82de802a
QT		 445void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
446 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 447{
448 switch (pkt->entry_type) {
f83adb61
QT		 449 case CTIO_CRC2:
450 ql_dbg(ql_dbg_tgt, vha, 0xe073,
451 "qla_target(%d):%s: CRC2 Response pkt\n",
452 vha->vp_idx, __func__);
2d70c103
NB		 453 case CTIO_TYPE7:
454 {
455 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
456 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
457 entry->vp_index);
458 if (unlikely(!host)) {
459 ql_dbg(ql_dbg_tgt, vha, 0xe041,
460 "qla_target(%d): Response pkt (CTIO_TYPE7) "
461 "received, with unknown vp_index %d\n",
462 vha->vp_idx, entry->vp_index);
463 break;
464 }
82de802a 465 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 466 break;
467 }
468
469 case IMMED_NOTIFY_TYPE:
470 {
471 struct scsi_qla_host *host = vha;
472 struct imm_ntfy_from_isp *entry =
473 (struct imm_ntfy_from_isp *)pkt;
474
475 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
476 if (unlikely(!host)) {
477 ql_dbg(ql_dbg_tgt, vha, 0xe042,
478 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
479 "received, with unknown vp_index %d\n",
480 vha->vp_idx, entry->u.isp24.vp_index);
481 break;
482 }
82de802a 483 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 484 break;
485 }
486
487 case NOTIFY_ACK_TYPE:
488 {
489 struct scsi_qla_host *host = vha;
490 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
491
492 if (0xFF != entry->u.isp24.vp_index) {
493 host = qlt_find_host_by_vp_idx(vha,
494 entry->u.isp24.vp_index);
495 if (unlikely(!host)) {
496 ql_dbg(ql_dbg_tgt, vha, 0xe043,
497 "qla_target(%d): Response "
498 "pkt (NOTIFY_ACK_TYPE) "
499 "received, with unknown "
500 "vp_index %d\n", vha->vp_idx,
501 entry->u.isp24.vp_index);
502 break;
503 }
504 }
82de802a 505 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 506 break;
507 }
508
509 case ABTS_RECV_24XX:
510 {
511 struct abts_recv_from_24xx *entry =
512 (struct abts_recv_from_24xx *)pkt;
513 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
514 entry->vp_index);
515 if (unlikely(!host)) {
516 ql_dbg(ql_dbg_tgt, vha, 0xe044,
517 "qla_target(%d): Response pkt "
518 "(ABTS_RECV_24XX) received, with unknown "
519 "vp_index %d\n", vha->vp_idx, entry->vp_index);
520 break;
521 }
82de802a 522 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 523 break;
524 }
525
526 case ABTS_RESP_24XX:
527 {
528 struct abts_resp_to_24xx *entry =
529 (struct abts_resp_to_24xx *)pkt;
530 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
531 entry->vp_index);
532 if (unlikely(!host)) {
533 ql_dbg(ql_dbg_tgt, vha, 0xe045,
534 "qla_target(%d): Response pkt "
535 "(ABTS_RECV_24XX) received, with unknown "
536 "vp_index %d\n", vha->vp_idx, entry->vp_index);
537 break;
538 }
82de802a 539 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 540 break;
541 }
542
543 default:
82de802a 544 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 545 break;
546 }
547
548}
549
b7bd104e
AP		 550/*
551 * All qlt_plogi_ack_t operations are protected by hardware_lock
552 */
726b8548
QT		 553static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
554 struct imm_ntfy_from_isp *ntfy, int type)
555{
556 struct qla_work_evt *e;
557 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
558 if (!e)
559 return QLA_FUNCTION_FAILED;
560
561 e->u.nack.fcport = fcport;
562 e->u.nack.type = type;
563 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
564 return qla2x00_post_work(vha, e);
565}
566
567static
25ff6af1 568void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 569{
726b8548 570 struct srb *sp = (struct srb *)s;
25ff6af1 571 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 572 unsigned long flags;
573
83548fe2
QT		 574 ql_dbg(ql_dbg_disc, vha, 0x20f2,
575 "Async done-%s res %x %8phC type %d\n",
576 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 577
578 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
579 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 580 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 581
582 switch (sp->type) {
583 case SRB_NACK_PLOGI:
584 sp->fcport->login_gen++;
585 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
586 sp->fcport->logout_on_delete = 1;
5b33469a 587 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
726b8548
QT		 588 break;
589
590 case SRB_NACK_PRLI:
591 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
592 sp->fcport->deleted = 0;
593
594 if (!sp->fcport->login_succ &&
595 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
596 sp->fcport->login_succ = 1;
597
598 vha->fcport_count++;
599
600 if (!IS_IIDMA_CAPABLE(vha->hw) ||
601 !vha->hw->flags.gpsc_supported) {
83548fe2
QT		 602 ql_dbg(ql_dbg_disc, vha, 0x20f3,
603 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
604 __func__, __LINE__,
605 sp->fcport->port_name,
606 vha->fcport_count);
726b8548
QT		 607
608 qla24xx_post_upd_fcport_work(vha, sp->fcport);
609 } else {
83548fe2
QT		 610 ql_dbg(ql_dbg_disc, vha, 0x20f5,
611 "%s %d %8phC post gpsc fcp_cnt %d\n",
612 __func__, __LINE__,
613 sp->fcport->port_name,
614 vha->fcport_count);
726b8548
QT		 615
616 qla24xx_post_gpsc_work(vha, sp->fcport);
617 }
618 }
619 break;
620
621 case SRB_NACK_LOGO:
622 sp->fcport->login_gen++;
623 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
624 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
625 break;
626 }
627 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
628
25ff6af1 629 sp->free(sp);
726b8548
QT		 630}
631
632int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
633 struct imm_ntfy_from_isp *ntfy, int type)
634{
635 int rval = QLA_FUNCTION_FAILED;
636 srb_t *sp;
637 char *c = NULL;
638
639 fcport->flags |= FCF_ASYNC_SENT;
640 switch (type) {
641 case SRB_NACK_PLOGI:
642 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
643 c = "PLOGI";
644 break;
645 case SRB_NACK_PRLI:
646 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 647 fcport->deleted = 0;
726b8548
QT		 648 c = "PRLI";
649 break;
650 case SRB_NACK_LOGO:
651 fcport->fw_login_state = DSC_LS_LOGO_PEND;
652 c = "LOGO";
653 break;
654 }
655
656 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
657 if (!sp)
658 goto done;
659
660 sp->type = type;
661 sp->name = "nack";
662
663 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
664
665 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
666
667 sp->done = qla2x00_async_nack_sp_done;
668
669 rval = qla2x00_start_sp(sp);
670 if (rval != QLA_SUCCESS)
671 goto done_free_sp;
672
83548fe2
QT		 673 ql_dbg(ql_dbg_disc, vha, 0x20f4,
674 "Async-%s %8phC hndl %x %s\n",
675 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 676
677 return rval;
678
679done_free_sp:
25ff6af1 680 sp->free(sp);
726b8548
QT		 681done:
682 fcport->flags &= ~FCF_ASYNC_SENT;
683 return rval;
684}
685
686void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
687{
688 fc_port_t *t;
689 unsigned long flags;
690
691 switch (e->u.nack.type) {
692 case SRB_NACK_PRLI:
693 mutex_lock(&vha->vha_tgt.tgt_mutex);
694 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
695 mutex_unlock(&vha->vha_tgt.tgt_mutex);
696 if (t) {
83548fe2 697 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 698 "%s create sess success %p", __func__, t);
699 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
700 /* create sess has an extra kref */
701 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
702 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
703 }
704 break;
705 }
706 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
707 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
708}
709
710void qla24xx_delete_sess_fn(struct work_struct *work)
711{
712 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
713 struct qla_hw_data *ha = fcport->vha->hw;
714 unsigned long flags;
715
716 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
717
718 if (fcport->se_sess) {
719 ha->tgt.tgt_ops->shutdown_sess(fcport);
720 ha->tgt.tgt_ops->put_sess(fcport);
721 } else {
722 qlt_unreg_sess(fcport);
723 }
724 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
725}
726
727/*
728 * Called from qla2x00_reg_remote_port()
729 */
730void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
731{
732 struct qla_hw_data *ha = vha->hw;
733 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
734 struct fc_port *sess = fcport;
735 unsigned long flags;
736
737 if (!vha->hw->tgt.tgt_ops)
738 return;
739
740 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
741 if (tgt->tgt_stop) {
742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
743 return;
744 }
745
746 if (fcport->disc_state == DSC_DELETE_PEND) {
747 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
748 return;
749 }
750
751 if (!sess->se_sess) {
752 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
753
754 mutex_lock(&vha->vha_tgt.tgt_mutex);
755 sess = qlt_create_sess(vha, fcport, false);
756 mutex_unlock(&vha->vha_tgt.tgt_mutex);
757
758 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
759 } else {
760 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
761 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
762 return;
763 }
764
765 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 766 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 767 "%s: kref_get fail sess %8phC \n",
768 __func__, sess->port_name);
769 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
770 return;
771 }
772
773 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
774 "qla_target(%u): %ssession for port %8phC "
775 "(loop ID %d) reappeared\n", vha->vp_idx,
776 sess->local ? "local " : "", sess->port_name, sess->loop_id);
777
778 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
779 "Reappeared sess %p\n", sess);
780
781 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
782 fcport->loop_id,
783 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
784 }
785
786 if (sess && sess->local) {
787 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
788 "qla_target(%u): local session for "
789 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
790 fcport->port_name, sess->loop_id);
791 sess->local = 0;
792 }
793 ha->tgt.tgt_ops->put_sess(sess);
794 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
795}
b7bd104e
AP		 796
797/*
798 * This is a zero-base ref-counting solution, since hardware_lock
799 * guarantees that ref_count is not modified concurrently.
800 * Upon successful return content of iocb is undefined
801 */
5d964837 802static struct qlt_plogi_ack_t *
b7bd104e
AP		 803qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
804 struct imm_ntfy_from_isp *iocb)
805{
5d964837 806 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 807
808 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
809 if (pla->id.b24 == id->b24) {
810 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 811 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 812 return pla;
813 }
814 }
815
816 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
817 if (!pla) {
818 ql_dbg(ql_dbg_async, vha, 0x5088,
819 "qla_target(%d): Allocation of plogi_ack failed\n",
820 vha->vp_idx);
821 return NULL;
822 }
823
5d964837 824 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 825 pla->id = *id;
826 list_add_tail(&pla->list, &vha->plogi_ack_list);
827
828 return pla;
829}
830
726b8548 831void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 832 struct qlt_plogi_ack_t *pla)
b7bd104e 833{
5d964837 834 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 835 port_id_t port_id;
836 uint16_t loop_id;
837 fc_port_t *fcport = pla->fcport;
838
b7bd104e
AP		 839 BUG_ON(!pla->ref_count);
840 pla->ref_count--;
841
842 if (pla->ref_count)
843 return;
844
726b8548 845 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 846 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 847 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
848 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
849 iocb->u.isp24.port_id[0],
850 le16_to_cpu(iocb->u.isp24.nport_handle),
851 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 852
853 port_id.b.domain = iocb->u.isp24.port_id[2];
854 port_id.b.area = iocb->u.isp24.port_id[1];
855 port_id.b.al_pa = iocb->u.isp24.port_id[0];
856 port_id.b.rsvd_1 = 0;
857
858 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
859
860 fcport->loop_id = loop_id;
861 fcport->d_id = port_id;
862 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
863
864 list_for_each_entry(fcport, &vha->vp_fcports, list) {
865 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
866 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
867 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
868 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
869 }
b7bd104e
AP		 870
871 list_del(&pla->list);
872 kmem_cache_free(qla_tgt_plogi_cachep, pla);
873}
874
726b8548 875void
5d964837
QT		 876qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
877 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 878{
5d964837 879 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 880 /* Inc ref_count first because link might already be pointing at pla */
881 pla->ref_count++;
882
726b8548
QT		 883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
884 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
885 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
886 sess, link, sess->port_name,
887 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
888 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
889 pla->ref_count, pla, link);
890
b7bd104e
AP		 891 if (sess->plogi_link[link])
892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
893
726b8548
QT		 894 if (link == QLT_PLOGI_LINK_SAME_WWN)
895 pla->fcport = sess;
b7bd104e
AP		 896
897 sess->plogi_link[link] = pla;
898}
899
71cdc079
AP		 900typedef struct {
901 /* These fields must be initialized by the caller */
902 port_id_t id;
903 /*
904 * number of cmds dropped while we were waiting for
905 * initiator to ack LOGO initialize to 1 if LOGO is
906 * triggered by a command, otherwise, to 0
907 */
908 int cmd_count;
909
910 /* These fields are used by callee */
911 struct list_head list;
912} qlt_port_logo_t;
913
914static void
915qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
916{
917 qlt_port_logo_t *tmp;
918 int res;
919
920 mutex_lock(&vha->vha_tgt.tgt_mutex);
921
922 list_for_each_entry(tmp, &vha->logo_list, list) {
923 if (tmp->id.b24 == logo->id.b24) {
924 tmp->cmd_count += logo->cmd_count;
925 mutex_unlock(&vha->vha_tgt.tgt_mutex);
926 return;
927 }
928 }
929
930 list_add_tail(&logo->list, &vha->logo_list);
931
932 mutex_unlock(&vha->vha_tgt.tgt_mutex);
933
934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
935
936 mutex_lock(&vha->vha_tgt.tgt_mutex);
937 list_del(&logo->list);
938 mutex_unlock(&vha->vha_tgt.tgt_mutex);
939
b7bd104e
AP		 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
943 logo->cmd_count, res);
71cdc079
AP		 944}
945
2d70c103
NB		 946static void qlt_free_session_done(struct work_struct *work)
947{
5d964837 948 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 949 free_work);
950 struct qla_tgt *tgt = sess->tgt;
951 struct scsi_qla_host *vha = sess->vha;
952 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 953 unsigned long flags;
954 bool logout_started = false;
726b8548 955 struct event_arg ea;
41dc529a 956 scsi_qla_host_t *base_vha;
a6ca8878
AP		 957
958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
959 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 960 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 961 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 962 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 963 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 964 sess->send_els_logo);
2d70c103 965
a6ca8878 966
726b8548 967 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 968 if (sess->send_els_logo) {
969 qlt_port_logo_t logo;
71cdc079 970
41dc529a
QT		 971 logo.id = sess->d_id;
972 logo.cmd_count = 0;
973 qlt_send_first_logo(vha, &logo);
974 }
975
976 if (sess->logout_on_delete) {
977 int rc;
978
979 rc = qla2x00_post_async_logout_work(vha, sess, NULL);
980 if (rc != QLA_SUCCESS)
981 ql_log(ql_log_warn, vha, 0xf085,
982 "Schedule logo failed sess %p rc %d\n",
983 sess, rc);
984 else
985 logout_started = true;
986 }
726b8548 987 }
a6ca8878 988
2d70c103
NB		 989 /*
990 * Release the target session for FC Nexus from fabric module code.
991 */
992 if (sess->se_sess != NULL)
993 ha->tgt.tgt_ops->free_session(sess);
994
a6ca8878
AP		 995 if (logout_started) {
996 bool traced = false;
997
998 while (!ACCESS_ONCE(sess->logout_completed)) {
999 if (!traced) {
1000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1001 "%s: waiting for sess %p logout\n",
1002 __func__, sess);
1003 traced = true;
1004 }
1005 msleep(100);
1006 }
1007
726b8548 1008 ql_dbg(ql_dbg_disc, vha, 0xf087,
41dc529a
QT		 1009 "%s: sess %p logout completed\n",__func__, sess);
1010 }
1011
1012 if (sess->logo_ack_needed) {
1013 sess->logo_ack_needed = 0;
1014 qla24xx_async_notify_ack(vha, sess,
1015 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1016 }
1017
726b8548
QT		 1018 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1019 if (sess->se_sess) {
1020 sess->se_sess = NULL;
1021 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1022 tgt->sess_count--;
1023 }
1024
1025 sess->disc_state = DSC_DELETED;
1026 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1027 sess->deleted = QLA_SESS_DELETED;
1028 sess->login_retry = vha->hw->login_retry_count;
1029
1030 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1031 vha->fcport_count--;
1032 sess->login_succ = 0;
1033 }
1034
7c3f8fd1 1035 if (sess->chip_reset != ha->base_qpair->chip_reset)
726b8548
QT		 1036 qla2x00_clear_loop_id(sess);
1037
1038 if (sess->conflict) {
1039 sess->conflict->login_pause = 0;
1040 sess->conflict = NULL;
1041 if (!test_bit(UNLOADING, &vha->dpc_flags))
1042 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1043 }
1044
b7bd104e 1045 {
5d964837 1046 struct qlt_plogi_ack_t *own =
b7bd104e 1047 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
5d964837 1048 struct qlt_plogi_ack_t *con =
b7bd104e 1049 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1050 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1051
1052 if (con) {
5d964837 1053 iocb = &con->iocb;
b7bd104e 1054 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1055 "se_sess %p / sess %p port %8phC is gone,"
1056 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1057 sess->se_sess, sess, sess->port_name,
1058 own ? "releasing own PLOGI" : "no own PLOGI pending",
1059 own ? own->ref_count : -1,
1060 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1061 qlt_plogi_ack_unref(vha, con);
726b8548 1062 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1063 } else {
1064 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1065 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1066 sess->se_sess, sess, sess->port_name,
1067 own ? "releasing own PLOGI" :
1068 "no own PLOGI pending",
1069 own ? own->ref_count : -1);
1070 }
1071
726b8548
QT		 1072 if (own) {
1073 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1074 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1075 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1076 }
b7bd104e 1077 }
5d964837
QT		 1078 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1079
2d70c103 1080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1081 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1082 sess, sess->port_name, vha->fcport_count);
2d70c103 1083
726b8548 1084 if (tgt && (tgt->sess_count == 0))
2d70c103 1085 wake_up_all(&tgt->waitQ);
726b8548
QT		 1086
1087 if (vha->fcport_count == 0)
1088 wake_up_all(&vha->fcport_waitQ);
1089
41dc529a
QT		 1090 base_vha = pci_get_drvdata(ha->pdev);
1091 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1092 return;
1093
726b8548
QT		 1094 if (!tgt || !tgt->tgt_stop) {
1095 memset(&ea, 0, sizeof(ea));
1096 ea.event = FCME_DELETE_DONE;
1097 ea.fcport = sess;
1098 qla2x00_fcport_event_handler(vha, &ea);
1099 }
2d70c103
NB		 1100}
1101
7560151b 1102/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1103void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1104{
1105 struct scsi_qla_host *vha = sess->vha;
1106
83548fe2 1107 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1108 "%s sess %p for deletion %8phC\n",
1109 __func__, sess, sess->port_name);
1110
36c78452
QT		 1111 if (sess->se_sess)
1112 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1113
5d964837
QT		 1114 qla2x00_mark_device_lost(vha, sess, 1, 1);
1115
a6ca8878 1116 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1117 sess->disc_state = DSC_DELETE_PEND;
1118 sess->last_rscn_gen = sess->rscn_gen;
1119 sess->last_login_gen = sess->login_gen;
2d70c103
NB		 1120
1121 INIT_WORK(&sess->free_work, qlt_free_session_done);
1122 schedule_work(&sess->free_work);
1123}
5d964837 1124EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1125
2d70c103
NB		 1126static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1127{
1128 struct qla_hw_data *ha = vha->hw;
5d964837 1129 struct fc_port *sess = NULL;
2d70c103
NB		 1130 uint16_t loop_id;
1131 int res = 0;
1132 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1133 unsigned long flags;
2d70c103
NB		 1134
1135 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1136 if (loop_id == 0xFFFF) {
2d70c103 1137 /* Global event */
b2032fd5 1138 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1139 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1140 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1141 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1142 } else {
7560151b 1143 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1144 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1145 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1146 }
1147
1148 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1149 "Using sess for qla_tgt_reset: %p\n", sess);
1150 if (!sess) {
1151 res = -ESRCH;
1152 return res;
1153 }
1154
1155 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1156 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1157 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1158 mcmd, loop_id);
1159
bb1181c9 1160 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1161}
1162
726b8548
QT		 1163static void qla24xx_chk_fcp_state(struct fc_port *sess)
1164{
7c3f8fd1 1165 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1166 sess->logout_on_delete = 0;
1167 sess->logo_ack_needed = 0;
1168 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1169 sess->scan_state = 0;
1170 }
1171}
1172
7560151b 1173/* ha->tgt.sess_lock supposed to be held on entry */
726b8548 1174void qlt_schedule_sess_for_deletion(struct fc_port *sess,
2d70c103
NB		 1175 bool immediate)
1176{
1177 struct qla_tgt *tgt = sess->tgt;
2d70c103 1178
726b8548
QT		 1179 if (sess->disc_state == DSC_DELETE_PEND)
1180 return;
1181
1182 if (sess->disc_state == DSC_DELETED) {
1183 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1184 wake_up_all(&tgt->waitQ);
1185 if (sess->vha->fcport_count == 0)
1186 wake_up_all(&sess->vha->fcport_waitQ);
1187
1188 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1189 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1190 return;
1191 }
2d70c103 1192
726b8548 1193 sess->disc_state = DSC_DELETE_PEND;
2d70c103 1194
726b8548
QT		 1195 if (sess->deleted == QLA_SESS_DELETED)
1196 sess->logout_on_delete = 0;
1197
1198 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1199 qla24xx_chk_fcp_state(sess);
2d70c103 1200
726b8548
QT		 1201 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1202 "Scheduling sess %p for deletion\n", sess);
2d70c103 1203
726b8548
QT		 1204 schedule_work(&sess->del_work);
1205}
2d70c103 1206
726b8548
QT		 1207void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
1208{
1209 unsigned long flags;
1210 struct qla_hw_data *ha = sess->vha->hw;
1211 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1212 qlt_schedule_sess_for_deletion(sess, 1);
1213 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1214}
1215
7560151b 1216/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1217static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1218{
5d964837
QT		 1219 struct fc_port *sess;
1220 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1221
5d964837
QT		 1222 list_for_each_entry(sess, &vha->vp_fcports, list) {
1223 if (sess->se_sess)
726b8548 1224 qlt_schedule_sess_for_deletion(sess, 1);
5d964837 1225 }
2d70c103
NB		 1226
1227 /* At this point tgt could be already dead */
1228}
1229
1230static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1231 uint16_t *loop_id)
1232{
1233 struct qla_hw_data *ha = vha->hw;
1234 dma_addr_t gid_list_dma;
1235 struct gid_list_info *gid_list;
1236 char *id_iter;
1237 int res, rc, i;
1238 uint16_t entries;
1239
1240 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1241 &gid_list_dma, GFP_KERNEL);
1242 if (!gid_list) {
1243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1244 "qla_target(%d): DMA Alloc failed of %u\n",
1245 vha->vp_idx, qla2x00_gid_list_size(ha));
1246 return -ENOMEM;
1247 }
1248
1249 /* Get list of logged in devices */
15f30a57 1250 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1251 if (rc != QLA_SUCCESS) {
1252 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1253 "qla_target(%d): get_id_list() failed: %x\n",
1254 vha->vp_idx, rc);
71cdc079 1255 res = -EBUSY;
2d70c103
NB		 1256 goto out_free_id_list;
1257 }
1258
1259 id_iter = (char *)gid_list;
71cdc079 1260 res = -ENOENT;
2d70c103
NB		 1261 for (i = 0; i < entries; i++) {
1262 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1263 if ((gid->al_pa == s_id[2]) &&
1264 (gid->area == s_id[1]) &&
1265 (gid->domain == s_id[0])) {
1266 *loop_id = le16_to_cpu(gid->loop_id);
1267 res = 0;
1268 break;
1269 }
1270 id_iter += ha->gid_list_info_size;
1271 }
1272
1273out_free_id_list:
1274 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1275 gid_list, gid_list_dma);
1276 return res;
1277}
1278
2d70c103
NB		 1279/*
1280 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1281 * Caller must put it.
1282 */
5d964837 1283static struct fc_port *qlt_create_sess(
2d70c103
NB		 1284 struct scsi_qla_host *vha,
1285 fc_port_t *fcport,
1286 bool local)
1287{
1288 struct qla_hw_data *ha = vha->hw;
726b8548 1289 struct fc_port *sess = fcport;
2d70c103 1290 unsigned long flags;
2d70c103 1291
726b8548
QT		 1292 if (vha->vha_tgt.qla_tgt->tgt_stop)
1293 return NULL;
2d70c103 1294
726b8548
QT		 1295 if (fcport->se_sess) {
1296 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1297 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1298 "%s: kref_get_unless_zero failed for %8phC\n",
1299 __func__, sess->port_name);
1300 return NULL;
2d70c103 1301 }
726b8548 1302 return fcport;
2d70c103 1303 }
0e8cd71c 1304 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1305 sess->local = local;
a6ca8878 1306
726b8548
QT		 1307 /*
1308 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1309 * session eventually ends and release corresponding nport handle.
1310 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1311 * code will adjust these flags as necessary.
1312 */
a6ca8878
AP		 1313 sess->logout_on_delete = 1;
1314 sess->keep_nport_handle = 0;
726b8548 1315 sess->logout_completed = 0;
2d70c103 1316
726b8548
QT		 1317 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1318 &fcport->port_name[0], sess) < 0) {
83548fe2 1319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1320 "(%d) %8phC check_initiator_node_acl failed\n",
1321 vha->vp_idx, fcport->port_name);
1322 return NULL;
1323 } else {
1324 kref_init(&fcport->sess_kref);
1325 /*
1326 * Take an extra reference to ->sess_kref here to handle
1327 * fc_port access across ->tgt.sess_lock reaquire.
1328 */
1329 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1330 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1331 "%s: kref_get_unless_zero failed for %8phC\n",
1332 __func__, sess->port_name);
1333 return NULL;
1334 }
2d70c103 1335
726b8548
QT		 1336 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1337 if (!IS_SW_RESV_ADDR(sess->d_id))
1338 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1339
726b8548
QT		 1340 qlt_do_generation_tick(vha, &sess->generation);
1341 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1342 }
1343
1344 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1345 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1346 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1347 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1348
1349 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1350 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1351 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1352 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1353 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1354 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1355
1356 return sess;
1357}
1358
df673274
AP		 1359/*
1360 * max_gen - specifies maximum session generation
1361 * at which this deletion requestion is still valid
1362 */
1363void
1364qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1365{
0e8cd71c 1366 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1367 struct fc_port *sess = fcport;
7560151b 1368 unsigned long flags;
2d70c103
NB		 1369
1370 if (!vha->hw->tgt.tgt_ops)
1371 return;
1372
b2032fd5 1373 if (!tgt)
2d70c103
NB		 1374 return;
1375
7560151b 1376 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1377 if (tgt->tgt_stop) {
7560151b 1378 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1379 return;
1380 }
5d964837 1381 if (!sess->se_sess) {
7560151b 1382 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1383 return;
1384 }
1385
df673274 1386 if (max_gen - sess->generation < 0) {
7560151b 1387 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1388 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1389 "Ignoring stale deletion request for se_sess %p / sess %p"
1390 " for port %8phC, req_gen %d, sess_gen %d\n",
1391 sess->se_sess, sess, sess->port_name, max_gen,
1392 sess->generation);
1393 return;
1394 }
1395
2d70c103
NB		 1396 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1397
1398 sess->local = 1;
1399 qlt_schedule_sess_for_deletion(sess, false);
7560151b 1400 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1401}
1402
1403static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1404{
1405 struct qla_hw_data *ha = tgt->ha;
1406 unsigned long flags;
1407 int res;
1408 /*
1409 * We need to protect against race, when tgt is freed before or
1410 * inside wake_up()
1411 */
726b8548 1412 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1413 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1414 "tgt %p, sess_count=%d\n",
1415 tgt, tgt->sess_count);
2d70c103 1416 res = (tgt->sess_count == 0);
726b8548 1417 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1418
1419 return res;
1420}
1421
1422/* Called by tcm_qla2xxx configfs code */
3c231bda 1423int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1424{
1425 struct scsi_qla_host *vha = tgt->vha;
1426 struct qla_hw_data *ha = tgt->ha;
1427 unsigned long flags;
1428
3c231bda
NB		 1429 mutex_lock(&qla_tgt_mutex);
1430 if (!vha->fc_vport) {
1431 struct Scsi_Host *sh = vha->host;
1432 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1433 bool npiv_vports;
1434
1435 spin_lock_irqsave(sh->host_lock, flags);
1436 npiv_vports = (fc_host->npiv_vports_inuse);
1437 spin_unlock_irqrestore(sh->host_lock, flags);
1438
1439 if (npiv_vports) {
1440 mutex_unlock(&qla_tgt_mutex);
3a33dc95
QT		 1441 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1442 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1443 return -EPERM;
1444 }
1445 }
2d70c103
NB		 1446 if (tgt->tgt_stop || tgt->tgt_stopped) {
1447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1448 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1449 mutex_unlock(&qla_tgt_mutex);
1450 return -EPERM;
2d70c103
NB		 1451 }
1452
3a33dc95 1453 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1454 vha->host_no, vha);
1455 /*
1456 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1457 * Lock is needed, because we still can get an incoming packet.
1458 */
0e8cd71c 1459 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1460 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1461 tgt->tgt_stop = 1;
c5701042 1462 qlt_clear_tgt_db(tgt);
7560151b 1463 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1464 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1465 mutex_unlock(&qla_tgt_mutex);
2d70c103 1466
2d70c103
NB		 1467 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1468 "Waiting for sess works (tgt %p)", tgt);
1469 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1470 while (!list_empty(&tgt->sess_works_list)) {
1471 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1472 flush_scheduled_work();
1473 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1474 }
1475 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1476
1477 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1478 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103
NB		 1479
1480 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
1481
1482 /* Big hammer */
ead03855
QT		 1483 if (!ha->flags.host_shutting_down &&
1484 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1485 qlt_disable_vha(vha);
1486
1487 /* Wait for sessions to clear out (just in case) */
1488 wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
3c231bda 1489 return 0;
2d70c103
NB		 1490}
1491EXPORT_SYMBOL(qlt_stop_phase1);
1492
1493/* Called by tcm_qla2xxx configfs code */
1494void qlt_stop_phase2(struct qla_tgt *tgt)
1495{
3a33dc95 1496 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1497
1498 if (tgt->tgt_stopped) {
0e8cd71c 1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1500 "Already in tgt->tgt_stopped state\n");
1501 dump_stack();
1502 return;
1503 }
3a33dc95
QT		 1504 if (!tgt->tgt_stop) {
1505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1506 "%s: phase1 stop is not completed\n", __func__);
1507 dump_stack();
1508 return;
1509 }
2d70c103 1510
0e8cd71c 1511 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1512 tgt->tgt_stop = 0;
1513 tgt->tgt_stopped = 1;
0e8cd71c 1514 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1515
3a33dc95 1516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1517 tgt);
1518}
1519EXPORT_SYMBOL(qlt_stop_phase2);
1520
1521/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1522static void qlt_release(struct qla_tgt *tgt)
2d70c103 1523{
0e8cd71c 1524 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1525 void *node;
1526 u64 key = 0;
1527 u16 i;
1528 struct qla_qpair_hint *h;
2d70c103 1529
3a33dc95
QT		 1530 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1531 !tgt->tgt_stopped)
1532 qlt_stop_phase1(tgt);
1533
0e8cd71c 1534 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1535 qlt_stop_phase2(tgt);
1536
e326d22a
QT		 1537 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1538 unsigned long flags;
1539
1540 h = &tgt->qphints[i];
1541 if (h->qpair) {
1542 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1543 list_del(&h->hint_elem);
1544 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1545 h->qpair = NULL;
1546 }
1547 }
1548 kfree(tgt->qphints);
1549
1550 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1551 btree_remove64(&tgt->lun_qpair_map, key);
1552
1553 btree_destroy64(&tgt->lun_qpair_map);
1554
0e8cd71c 1555 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1556
0e8cd71c 1557 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1558 "Release of tgt %p finished\n", tgt);
1559
1560 kfree(tgt);
1561}
1562
1563/* ha->hardware_lock supposed to be held on entry */
1564static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1565 const void *param, unsigned int param_size)
1566{
1567 struct qla_tgt_sess_work_param *prm;
1568 unsigned long flags;
1569
1570 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1571 if (!prm) {
1572 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1573 "qla_target(%d): Unable to create session "
1574 "work, command will be refused", 0);
1575 return -ENOMEM;
1576 }
1577
1578 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1579 "Scheduling work (type %d, prm %p)"
1580 " to find session for param %p (size %d, tgt %p)\n",
1581 type, prm, param, param_size, tgt);
1582
1583 prm->type = type;
1584 memcpy(&prm->tm_iocb, param, param_size);
1585
1586 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1587 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1588 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1589
1590 schedule_work(&tgt->sess_work);
1591
1592 return 0;
1593}
1594
1595/*
1596 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1597 */
82de802a 1598static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1599 struct imm_ntfy_from_isp *ntfy,
1600 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1601 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1602{
82de802a 1603 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1604 struct qla_hw_data *ha = vha->hw;
1605 request_t *pkt;
1606 struct nack_to_isp *nack;
1607
ec7193e2
QT		 1608 if (!ha->flags.fw_started)
1609 return;
1610
2d70c103
NB		 1611 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1612
82de802a 1613 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1614 if (!pkt) {
1615 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1616 "qla_target(%d): %s failed: unable to allocate "
1617 "request packet\n", vha->vp_idx, __func__);
1618 return;
1619 }
1620
0e8cd71c
SK		 1621 if (vha->vha_tgt.qla_tgt != NULL)
1622 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1623
1624 pkt->entry_type = NOTIFY_ACK_TYPE;
1625 pkt->entry_count = 1;
1626
1627 nack = (struct nack_to_isp *)pkt;
1628 nack->ox_id = ntfy->ox_id;
1629
726b8548 1630 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1631 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1632 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1633 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1634 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1635 }
1636 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1637 nack->u.isp24.status = ntfy->u.isp24.status;
1638 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1639 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1640 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1641 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1642 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1643 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1644 nack->u.isp24.srr_reject_code = srr_reject_code;
1645 nack->u.isp24.srr_reject_code_expl = srr_explan;
1646 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1647
1648 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1649 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1650 vha->vp_idx, nack->u.isp24.status);
1651
63163e06
HM		 1652 /* Memory Barrier */
1653 wmb();
82de802a 1654 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1655}
1656
1657/*
1658 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1659 */
82de802a 1660static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1661 struct abts_recv_from_24xx *abts, uint32_t status,
1662 bool ids_reversed)
1663{
82de802a 1664 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1665 struct qla_hw_data *ha = vha->hw;
1666 struct abts_resp_to_24xx *resp;
1667 uint32_t f_ctl;
1668 uint8_t *p;
1669
1670 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1671 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1672 ha, abts, status);
1673
82de802a
QT		 1674 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1675 NULL);
2d70c103
NB		 1676 if (!resp) {
1677 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1678 "qla_target(%d): %s failed: unable to allocate "
1679 "request packet", vha->vp_idx, __func__);
1680 return;
1681 }
1682
1683 resp->entry_type = ABTS_RESP_24XX;
1684 resp->entry_count = 1;
1685 resp->nport_handle = abts->nport_handle;
1686 resp->vp_index = vha->vp_idx;
1687 resp->sof_type = abts->sof_type;
1688 resp->exchange_address = abts->exchange_address;
1689 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1690 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1691 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1692 F_CTL_SEQ_INITIATIVE);
1693 p = (uint8_t *)&f_ctl;
1694 resp->fcp_hdr_le.f_ctl[0] = *p++;
1695 resp->fcp_hdr_le.f_ctl[1] = *p++;
1696 resp->fcp_hdr_le.f_ctl[2] = *p;
1697 if (ids_reversed) {
1698 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1699 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1700 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1701 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1702 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1703 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1704 } else {
1705 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1706 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1707 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1708 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1709 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1710 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1711 }
1712 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1713 if (status == FCP_TMF_CMPL) {
1714 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1715 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1716 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1717 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1718 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1719 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1720 } else {
1721 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1722 resp->payload.ba_rjt.reason_code =
1723 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1724 /* Other bytes are zero */
1725 }
1726
0e8cd71c 1727 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1728
63163e06
HM		 1729 /* Memory Barrier */
1730 wmb();
8abfa9e2
QT		 1731 if (qpair->reqq_start_iocbs)
1732 qpair->reqq_start_iocbs(qpair);
1733 else
1734 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1735}
1736
1737/*
1738 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1739 */
1740static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1741 struct abts_resp_from_24xx_fw *entry)
1742{
1743 struct ctio7_to_24xx *ctio;
1744
1745 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1746 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
2d70c103 1747
82de802a
QT		 1748 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1749 vha->hw->base_qpair, NULL);
2d70c103
NB		 1750 if (ctio == NULL) {
1751 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1752 "qla_target(%d): %s failed: unable to allocate "
1753 "request packet\n", vha->vp_idx, __func__);
1754 return;
1755 }
1756
1757 /*
1758 * We've got on entrance firmware's response on by us generated
1759 * ABTS response. So, in it ID fields are reversed.
1760 */
1761
1762 ctio->entry_type = CTIO_TYPE7;
1763 ctio->entry_count = 1;
1764 ctio->nport_handle = entry->nport_handle;
1765 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1766 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1767 ctio->vp_index = vha->vp_idx;
1768 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1769 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1770 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1771 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1772 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1773 CTIO7_FLAGS_TERMINATE);
33a5fcee 1774 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1775
63163e06
HM		 1776 /* Memory Barrier */
1777 wmb();
2d70c103
NB		 1778 qla2x00_start_iocbs(vha, vha->req);
1779
82de802a
QT		 1780 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1781 (struct abts_recv_from_24xx *)entry,
2d70c103
NB		 1782 FCP_TMF_CMPL, true);
1783}
1784
8b2f5ff3
SN		 1785static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1786{
1787 struct qla_tgt_sess_op *op;
1788 struct qla_tgt_cmd *cmd;
8b631d87 1789 unsigned long flags;
8b2f5ff3 1790
8b631d87 1791 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1792 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1793 if (tag == op->atio.u.isp24.exchange_addr) {
1794 op->aborted = true;
8b631d87 1795 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1796 return 1;
1797 }
1798 }
1799
41dc529a
QT		 1800 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1801 if (tag == op->atio.u.isp24.exchange_addr) {
1802 op->aborted = true;
8b631d87 1803 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1804 return 1;
1805 }
1806 }
1807
8b2f5ff3
SN		 1808 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1809 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1810 cmd->aborted = 1;
8b631d87 1811 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1812 return 1;
1813 }
1814 }
8b631d87 1815 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1816
8b2f5ff3
SN		 1817 return 0;
1818}
1819
1820/* drop cmds for the given lun
1821 * XXX only looks for cmds on the port through which lun reset was recieved
1822 * XXX does not go through the list of other port (which may have cmds
1823 * for the same lun)
1824 */
1825static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1826 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1827{
1828 struct qla_tgt_sess_op *op;
1829 struct qla_tgt_cmd *cmd;
1830 uint32_t key;
8b631d87 1831 unsigned long flags;
8b2f5ff3
SN		 1832
1833 key = sid_to_key(s_id);
8b631d87 1834 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1835 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1836 uint32_t op_key;
f775bd14 1837 u64 op_lun;
8b2f5ff3
SN		 1838
1839 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1840 op_lun = scsilun_to_int(
1841 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1842 if (op_key == key && op_lun == lun)
1843 op->aborted = true;
1844 }
41dc529a
QT		 1845
1846 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1847 uint32_t op_key;
1848 u64 op_lun;
1849
1850 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1851 op_lun = scsilun_to_int(
1852 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1853 if (op_key == key && op_lun == lun)
1854 op->aborted = true;
1855 }
1856
8b2f5ff3
SN		 1857 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1858 uint32_t cmd_key;
f775bd14 1859 u64 cmd_lun;
8b2f5ff3
SN		 1860
1861 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1862 cmd_lun = scsilun_to_int(
1863 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1864 if (cmd_key == key && cmd_lun == lun)
193b50b9 1865 cmd->aborted = 1;
8b2f5ff3 1866 }
8b631d87 1867 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1868}
1869
2d70c103
NB		 1870/* ha->hardware_lock supposed to be held on entry */
1871static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1872 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1873{
1874 struct qla_hw_data *ha = vha->hw;
06e97b48 1875 struct se_session *se_sess = sess->se_sess;
2d70c103 1876 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 1877 struct qla_tgt_cmd *cmd;
06e97b48 1878 struct se_cmd *se_cmd;
2d70c103 1879 int rc;
06e97b48 1880 bool found_lun = false;
5d964837 1881 unsigned long flags;
06e97b48 1882
5d964837 1883 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
06e97b48 1884 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
649ee054 1885 if (se_cmd->tag == abts->exchange_addr_to_abort) {
06e97b48
SH		 1886 found_lun = true;
1887 break;
1888 }
1889 }
5d964837 1890 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
06e97b48 1891
8b2f5ff3
SN		 1892 /* cmd not in LIO lists, look in qla list */
1893 if (!found_lun) {
1894 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1895 /* send TASK_ABORT response immediately */
82de802a
QT		 1896 qlt_24xx_send_abts_resp(ha->base_qpair, abts,
1897 FCP_TMF_CMPL, false);
8b2f5ff3
SN		 1898 return 0;
1899 } else {
1900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
1901 "unable to find cmd in driver or LIO for tag 0x%x\n",
1902 abts->exchange_addr_to_abort);
1903 return -ENOENT;
1904 }
1905 }
2d70c103
NB		 1906
1907 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1908 "qla_target(%d): task abort (tag=%d)\n",
1909 vha->vp_idx, abts->exchange_addr_to_abort);
1910
1911 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1912 if (mcmd == NULL) {
1913 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1914 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1915 vha->vp_idx, __func__);
1916 return -ENOMEM;
1917 }
1918 memset(mcmd, 0, sizeof(*mcmd));
1919
f775bd14 1920 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
2d70c103
NB		 1921 mcmd->sess = sess;
1922 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 1923 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 1924 mcmd->tmr_func = QLA_TGT_ABTS;
82de802a 1925 mcmd->qpair = ha->base_qpair;
2d70c103 1926
f775bd14 1927 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, cmd->unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 1928 abts->exchange_addr_to_abort);
1929 if (rc != 0) {
1930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1931 "qla_target(%d): tgt_ops->handle_tmr()"
1932 " failed: %d", vha->vp_idx, rc);
1933 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1934 return -EFAULT;
1935 }
1936
1937 return 0;
1938}
1939
1940/*
1941 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1942 */
1943static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1944 struct abts_recv_from_24xx *abts)
1945{
1946 struct qla_hw_data *ha = vha->hw;
5d964837 1947 struct fc_port *sess;
2d70c103
NB		 1948 uint32_t tag = abts->exchange_addr_to_abort;
1949 uint8_t s_id[3];
1950 int rc;
7560151b 1951 unsigned long flags;
2d70c103
NB		 1952
1953 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1955 "qla_target(%d): ABTS: Abort Sequence not "
1956 "supported\n", vha->vp_idx);
82de802a
QT		 1957 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1958 false);
2d70c103
NB		 1959 return;
1960 }
1961
1962 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1964 "qla_target(%d): ABTS: Unknown Exchange "
1965 "Address received\n", vha->vp_idx);
82de802a
QT		 1966 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1967 false);
2d70c103
NB		 1968 return;
1969 }
1970
1971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1972 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1973 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1974 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1975 le32_to_cpu(abts->fcp_hdr_le.parameter));
1976
1977 s_id[0] = abts->fcp_hdr_le.s_id[2];
1978 s_id[1] = abts->fcp_hdr_le.s_id[1];
1979 s_id[2] = abts->fcp_hdr_le.s_id[0];
1980
7560151b 1981 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1982 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1983 if (!sess) {
1984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1985 "qla_target(%d): task abort for non-existant session\n",
1986 vha->vp_idx);
0e8cd71c 1987 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1988 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1989
1990 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1991
2d70c103 1992 if (rc != 0) {
82de802a
QT		 1993 qlt_24xx_send_abts_resp(ha->base_qpair, abts,
1994 FCP_TMF_REJECTED, false);
2d70c103
NB		 1995 }
1996 return;
1997 }
7560151b
QT		 1998 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1999
2d70c103 2000
726b8548 2001 if (sess->deleted) {
82de802a
QT		 2002 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2003 false);
e52a8b45
AP		 2004 return;
2005 }
2006
2d70c103
NB		 2007 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2008 if (rc != 0) {
2009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2010 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2011 vha->vp_idx, rc);
82de802a
QT		 2012 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2013 false);
2d70c103
NB		 2014 return;
2015 }
2016}
2017
2018/*
2019 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2020 */
82de802a 2021static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2022 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2023{
82de802a 2024 struct scsi_qla_host *ha = qpair->vha;
2d70c103
NB		 2025 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2026 struct ctio7_to_24xx *ctio;
33a5fcee 2027 uint16_t temp;
2d70c103
NB		 2028
2029 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2030 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2031 ha, atio, resp_code);
2032
2d70c103 2033
82de802a 2034 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2035 if (ctio == NULL) {
2036 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2037 "qla_target(%d): %s failed: unable to allocate "
2038 "request packet\n", ha->vp_idx, __func__);
2039 return;
2040 }
2041
2042 ctio->entry_type = CTIO_TYPE7;
2043 ctio->entry_count = 1;
2044 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2045 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2046 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2047 ctio->vp_index = ha->vp_idx;
2048 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2049 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2050 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2051 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2052 temp = (atio->u.isp24.attr << 9)|
2053 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2054 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2055 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2056 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2057 ctio->u.status1.scsi_status =
ad950360
BVA		 2058 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2059 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2060 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2061
63163e06
HM		 2062 /* Memory Barrier */
2063 wmb();
8abfa9e2
QT		 2064 if (qpair->reqq_start_iocbs)
2065 qpair->reqq_start_iocbs(qpair);
2066 else
2067 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2068}
2069
2070void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2071{
2072 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2073}
2074EXPORT_SYMBOL(qlt_free_mcmd);
2075
be25152c
QT		 2076/*
2077 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2078 * reacquire
2079 */
8abfa9e2 2080void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2081 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2082{
2083 struct atio_from_isp *atio = &cmd->atio;
2084 struct ctio7_to_24xx *ctio;
2085 uint16_t temp;
8abfa9e2 2086 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2087
2088 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2089 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2090 "sense_key=%02x, asc=%02x, ascq=%02x",
2091 vha, atio, scsi_status, sense_key, asc, ascq);
2092
2093 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2094 if (!ctio) {
2095 ql_dbg(ql_dbg_async, vha, 0x3067,
2096 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2097 vha->host_no, __func__);
2098 goto out;
2099 }
2100
2101 ctio->entry_type = CTIO_TYPE7;
2102 ctio->entry_count = 1;
2103 ctio->handle = QLA_TGT_SKIP_HANDLE;
2104 ctio->nport_handle = cmd->sess->loop_id;
2105 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2106 ctio->vp_index = vha->vp_idx;
2107 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2108 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2109 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2110 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2111 temp = (atio->u.isp24.attr << 9) |
2112 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2113 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2114 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2115 ctio->u.status1.ox_id = cpu_to_le16(temp);
2116 ctio->u.status1.scsi_status =
2117 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2118 ctio->u.status1.response_len = cpu_to_le16(18);
2119 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2120
2121 if (ctio->u.status1.residual != 0)
2122 ctio->u.status1.scsi_status |=
2123 cpu_to_le16(SS_RESIDUAL_UNDER);
2124
2125 /* Response code and sense key */
2126 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2127 (&ctio->u.status1.sense_data)[0]);
2128 /* Additional sense length */
2129 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2130 /* ASC and ASCQ */
2131 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2132 (&ctio->u.status1.sense_data)[3]);
2133
2134 /* Memory Barrier */
2135 wmb();
2136
8abfa9e2
QT		 2137 if (qpair->reqq_start_iocbs)
2138 qpair->reqq_start_iocbs(qpair);
2139 else
2140 qla2x00_start_iocbs(vha, qpair->req);
2141
be25152c
QT		 2142out:
2143 return;
2144}
2145
2d70c103
NB		 2146/* callback from target fabric module code */
2147void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2148{
2149 struct scsi_qla_host *vha = mcmd->sess->vha;
2150 struct qla_hw_data *ha = vha->hw;
2151 unsigned long flags;
82de802a 2152 struct qla_qpair *qpair = mcmd->qpair;
2d70c103
NB		 2153
2154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2155 "TM response mcmd (%p) status %#x state %#x",
2156 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2157
82de802a 2158 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2159
7c3f8fd1 2160 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2161 /*
3bb67df5 2162 * Either the port is not online or this request was from
b6a029e1
AE		 2163 * previous life, just abort the processing.
2164 */
2165 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2166 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2167 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2168 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2169 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2170 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2171 return;
2172 }
2173
726b8548
QT		 2174 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2175 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2176 ELS_LOGO ||
2177 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2178 ELS_PRLO ||
2179 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2180 ELS_TPRLO) {
83548fe2 2181 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2182 "TM response logo %phC status %#x state %#x",
2183 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2184 mcmd->flags);
2185 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2186 } else {
82de802a
QT		 2187 qlt_send_notify_ack(vha->hw->base_qpair,
2188 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
726b8548
QT		 2189 }
2190 } else {
d7236ac3 2191 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
82de802a 2192 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2d70c103
NB		 2193 mcmd->fc_tm_rsp, false);
2194 else
82de802a 2195 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2196 mcmd->fc_tm_rsp);
2197 }
2198 /*
2199 * Make the callback for ->free_mcmd() to queue_work() and invoke
2200 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2201 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2202 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2203 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2204 * qlt_xmit_tm_rsp() returns here..
2205 */
2206 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2207 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2208}
2209EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2210
2211/* No locks */
2212static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2213{
2214 struct qla_tgt_cmd *cmd = prm->cmd;
2215
2216 BUG_ON(cmd->sg_cnt == 0);
2217
2218 prm->sg = (struct scatterlist *)cmd->sg;
8abfa9e2 2219 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2d70c103
NB		 2220 cmd->sg_cnt, cmd->dma_data_direction);
2221 if (unlikely(prm->seg_cnt == 0))
2222 goto out_err;
2223
2224 prm->cmd->sg_mapped = 1;
2225
f83adb61
QT		 2226 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2227 /*
2228 * If greater than four sg entries then we need to allocate
2229 * the continuation entries
2230 */
b5399f7d 2231 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2232 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2233 QLA_TGT_DATASEGS_PER_CMD_24XX,
2234 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2235 } else {
2236 /* DIF */
2237 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2238 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2239 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2240 prm->tot_dsds = prm->seg_cnt;
2241 } else
2242 prm->tot_dsds = prm->seg_cnt;
2243
2244 if (cmd->prot_sg_cnt) {
2245 prm->prot_sg = cmd->prot_sg;
8abfa9e2 2246 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
f83adb61
QT		 2247 cmd->prot_sg, cmd->prot_sg_cnt,
2248 cmd->dma_data_direction);
2249 if (unlikely(prm->prot_seg_cnt == 0))
2250 goto out_err;
2251
2252 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2253 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2254 /* Dif Bundling not support here */
2255 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2256 cmd->blk_sz);
2257 prm->tot_dsds += prm->prot_seg_cnt;
2258 } else
2259 prm->tot_dsds += prm->prot_seg_cnt;
2260 }
2261 }
2d70c103 2262
2d70c103
NB		 2263 return 0;
2264
2265out_err:
22d84726 2266 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2267 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2268 0, prm->cmd->sg_cnt);
2269 return -1;
2270}
2271
f9b6721a 2272static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2273{
8abfa9e2
QT		 2274 struct qla_hw_data *ha;
2275 struct qla_qpair *qpair;
f9b6721a
JE		 2276 if (!cmd->sg_mapped)
2277 return;
2278
8abfa9e2
QT		 2279 qpair = cmd->qpair;
2280
2281 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2282 cmd->dma_data_direction);
2d70c103 2283 cmd->sg_mapped = 0;
f83adb61
QT		 2284
2285 if (cmd->prot_sg_cnt)
8abfa9e2 2286 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2287 cmd->dma_data_direction);
2288
d5ff0eed
JC		 2289 if (!cmd->ctx)
2290 return;
8abfa9e2 2291 ha = vha->hw;
f83adb61 2292 if (cmd->ctx_dsd_alloced)
d5ff0eed 2293 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2294
d5ff0eed 2295 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2296}
2297
82de802a 2298static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2299 uint32_t req_cnt)
2300{
d63b328f 2301 uint32_t cnt;
82de802a 2302 struct req_que *req = qpair->req;
2d70c103 2303
82de802a 2304 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2305 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2306 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2307
82de802a
QT		 2308 if (req->ring_index < cnt)
2309 req->cnt = cnt - req->ring_index;
2d70c103 2310 else
82de802a 2311 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2312
82de802a 2313 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2314 return -EAGAIN;
2d70c103 2315 }
bc7095a9 2316
82de802a 2317 req->cnt -= req_cnt;
2d70c103
NB		 2318
2319 return 0;
2320}
2321
2322/*
2323 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2324 */
82de802a 2325static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2326{
2327 /* Adjust ring index. */
82de802a
QT		 2328 req->ring_index++;
2329 if (req->ring_index == req->length) {
2330 req->ring_index = 0;
2331 req->ring_ptr = req->ring;
2d70c103 2332 } else {
82de802a 2333 req->ring_ptr++;
2d70c103 2334 }
82de802a 2335 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2336}
2337
2338/* ha->hardware_lock supposed to be held on entry */
82de802a 2339static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2340{
2d70c103 2341 uint32_t h;
c5419e26
QT		 2342 int index;
2343 uint8_t found = 0;
82de802a 2344 struct req_que *req = qpair->req;
c5419e26
QT		 2345
2346 h = req->current_outstanding_cmd;
2d70c103 2347
c5419e26
QT		 2348 for (index = 1; index < req->num_outstanding_cmds; index++) {
2349 h++;
2350 if (h == req->num_outstanding_cmds)
2351 h = 1;
2352
2353 if (h == QLA_TGT_SKIP_HANDLE)
2354 continue;
2355
2356 if (!req->outstanding_cmds[h]) {
2357 found = 1;
2d70c103
NB		 2358 break;
2359 }
c5419e26 2360 }
2d70c103 2361
c5419e26
QT		 2362 if (found) {
2363 req->current_outstanding_cmd = h;
2364 } else {
8abfa9e2
QT		 2365 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2366 "qla_target(%d): Ran out of empty cmd slots\n",
2367 qpair->vha->vp_idx);
c5419e26
QT		 2368 h = QLA_TGT_NULL_HANDLE;
2369 }
2d70c103
NB		 2370
2371 return h;
2372}
2373
2374/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2375static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2376 struct qla_tgt_prm *prm)
2d70c103
NB		 2377{
2378 uint32_t h;
2379 struct ctio7_to_24xx *pkt;
2d70c103 2380 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2381 uint16_t temp;
2d70c103 2382
82de802a 2383 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2384 prm->pkt = pkt;
2385 memset(pkt, 0, sizeof(*pkt));
2386
2387 pkt->entry_type = CTIO_TYPE7;
2388 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2389 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2390
82de802a 2391 h = qlt_make_handle(qpair);
2d70c103
NB		 2392 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2393 /*
2394 * CTIO type 7 from the firmware doesn't provide a way to
2395 * know the initiator's LOOP ID, hence we can't find
2396 * the session and, so, the command.
2397 */
2398 return -EAGAIN;
e326d22a
QT		 2399 } else
2400 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2401
82de802a
QT		 2402 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2403 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2404 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2405 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2406 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2407 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2408 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2409 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2410 temp = atio->u.isp24.attr << 9;
2411 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2412 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2413 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2414 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2415
2d70c103
NB		 2416 return 0;
2417}
2418
2419/*
2420 * ha->hardware_lock supposed to be held on entry. We have already made sure
2421 * that there is sufficient amount of request entries to not drop it.
2422 */
32d29b4c 2423static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2424{
2425 int cnt;
2426 uint32_t *dword_ptr;
2d70c103
NB		 2427
2428 /* Build continuation packets */
2429 while (prm->seg_cnt > 0) {
2430 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2431 (cont_a64_entry_t *)qlt_get_req_pkt(
2432 prm->cmd->qpair->req);
2d70c103
NB		 2433
2434 /*
2435 * Make sure that from cont_pkt64 none of
2436 * 64-bit specific fields used for 32-bit
2437 * addressing. Cast to (cont_entry_t *) for
2438 * that.
2439 */
2440
2441 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2442
2443 cont_pkt64->entry_count = 1;
2444 cont_pkt64->sys_define = 0;
2445
32d29b4c
QT		 2446 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2447 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2d70c103
NB		 2448
2449 /* Load continuation entry data segments */
2450 for (cnt = 0;
b5399f7d 2451 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103
NB		 2452 cnt++, prm->seg_cnt--) {
2453 *dword_ptr++ =
2454 cpu_to_le32(pci_dma_lo32
2455 (sg_dma_address(prm->sg)));
32d29b4c
QT		 2456 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2457 (sg_dma_address(prm->sg)));
2d70c103
NB		 2458 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2459
2d70c103
NB		 2460 prm->sg = sg_next(prm->sg);
2461 }
2462 }
2463}
2464
2465/*
2466 * ha->hardware_lock supposed to be held on entry. We have already made sure
2467 * that there is sufficient amount of request entries to not drop it.
2468 */
32d29b4c 2469static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2470{
2471 int cnt;
2472 uint32_t *dword_ptr;
2d70c103
NB		 2473 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2474
2d70c103
NB		 2475 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2476
2477 /* Setup packet address segment pointer */
2478 dword_ptr = pkt24->u.status0.dseg_0_address;
2479
2480 /* Set total data segment count */
2481 if (prm->seg_cnt)
2482 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2483
2484 if (prm->seg_cnt == 0) {
2485 /* No data transfer */
2486 *dword_ptr++ = 0;
2487 *dword_ptr = 0;
2488 return;
2489 }
2490
2491 /* If scatter gather */
2d70c103
NB		 2492
2493 /* Load command entry data segments */
2494 for (cnt = 0;
b5399f7d 2495 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103
NB		 2496 cnt++, prm->seg_cnt--) {
2497 *dword_ptr++ =
2498 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
32d29b4c
QT		 2499
2500 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2501 sg_dma_address(prm->sg)));
2502
2d70c103
NB		 2503 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2504
2d70c103
NB		 2505 prm->sg = sg_next(prm->sg);
2506 }
2507
32d29b4c 2508 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2509}
2510
2511static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2512{
2513 return cmd->bufflen > 0;
2514}
2515
be25152c
QT		 2516static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2517{
2518 struct qla_tgt_cmd *cmd;
2519 struct scsi_qla_host *vha;
2520
2521 /* asc 0x10=dif error */
2522 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2523 cmd = prm->cmd;
2524 vha = cmd->vha;
2525 /* ASCQ */
2526 switch (prm->sense_buffer[13]) {
2527 case 1:
83548fe2 2528 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2529 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2530 "se_cmd=%p tag[%x]",
2531 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2532 cmd->atio.u.isp24.exchange_addr);
2533 break;
2534 case 2:
83548fe2 2535 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2536 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2537 "se_cmd=%p tag[%x]",
2538 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2539 cmd->atio.u.isp24.exchange_addr);
2540 break;
2541 case 3:
83548fe2 2542 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2543 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2544 "se_cmd=%p tag[%x]",
2545 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2546 cmd->atio.u.isp24.exchange_addr);
2547 break;
2548 default:
83548fe2 2549 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2550 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2551 "se_cmd=%p tag[%x]",
2552 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2553 cmd->atio.u.isp24.exchange_addr);
2554 break;
2555 }
83548fe2 2556 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2557 }
2558}
2559
2d70c103
NB		 2560/*
2561 * Called without ha->hardware_lock held
2562 */
2563static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2564 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2565 uint32_t *full_req_cnt)
2566{
2d70c103 2567 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2568 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2569
2d70c103 2570 prm->cmd = cmd;
7c3f8fd1
QT		 2571 prm->tgt = cmd->tgt;
2572 prm->pkt = NULL;
2d70c103
NB		 2573 prm->rq_result = scsi_status;
2574 prm->sense_buffer = &cmd->sense_buffer[0];
2575 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2576 prm->sg = NULL;
2577 prm->seg_cnt = -1;
2578 prm->req_cnt = 1;
7c3f8fd1 2579 prm->residual = 0;
2d70c103 2580 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2581 prm->prot_sg = NULL;
2582 prm->prot_seg_cnt = 0;
2583 prm->tot_dsds = 0;
2d70c103 2584
2d70c103
NB		 2585 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2586 if (qlt_pci_map_calc_cnt(prm) != 0)
2587 return -EAGAIN;
2588 }
2589
2590 *full_req_cnt = prm->req_cnt;
2591
2592 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2593 prm->residual = se_cmd->residual_count;
22d84726 2594 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2595 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2596 prm->residual, se_cmd->tag,
2597 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2598 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2599 prm->rq_result |= SS_RESIDUAL_UNDER;
2600 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2601 prm->residual = se_cmd->residual_count;
22d84726 2602 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2603 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2604 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2605 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2606 prm->rq_result |= SS_RESIDUAL_OVER;
2607 }
2608
2609 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2610 /*
2611 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2612 * ignored in *xmit_response() below
2613 */
2614 if (qlt_has_data(cmd)) {
2615 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2616 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2617 (prm->rq_result != 0))) {
2618 prm->add_status_pkt = 1;
2619 (*full_req_cnt)++;
2620 }
2621 }
2622 }
2623
2d70c103
NB		 2624 return 0;
2625}
2626
7c3f8fd1
QT		 2627static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2628 int sending_sense)
2d70c103 2629{
7c3f8fd1 2630 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2631 return 0;
2632
2633 if (sending_sense)
2634 return cmd->conf_compl_supported;
2635 else
7c3f8fd1
QT		 2636 return cmd->qpair->enable_explicit_conf &&
2637 cmd->conf_compl_supported;
2d70c103
NB		 2638}
2639
2d70c103
NB		 2640static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2641 struct qla_tgt_prm *prm)
2642{
2643 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2644 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2645 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2646 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2647 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2648 CTIO7_FLAGS_EXPLICIT_CONFORM |
2649 CTIO7_FLAGS_CONFORM_REQ);
2650 }
2651 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2652 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2653 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2654 int i;
2655
7c3f8fd1 2656 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2657 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2658 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2659 "Skipping EXPLICIT_CONFORM and "
2660 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2661 "non GOOD status\n");
2662 goto skip_explict_conf;
2663 }
ad950360 2664 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2665 CTIO7_FLAGS_EXPLICIT_CONFORM |
2666 CTIO7_FLAGS_CONFORM_REQ);
2667 }
2668skip_explict_conf:
2669 ctio->u.status1.flags &=
ad950360 2670 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2671 ctio->u.status1.flags |=
ad950360 2672 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2673 ctio->u.status1.scsi_status |=
ad950360 2674 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2675 ctio->u.status1.sense_length =
2676 cpu_to_le16(prm->sense_buffer_len);
2677 for (i = 0; i < prm->sense_buffer_len/4; i++)
2678 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2679 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2680
2681 qlt_print_dif_err(prm);
2682
2d70c103
NB		 2683 } else {
2684 ctio->u.status1.flags &=
ad950360 2685 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2686 ctio->u.status1.flags |=
ad950360 2687 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2688 ctio->u.status1.sense_length = 0;
2689 memset(ctio->u.status1.sense_data, 0,
2690 sizeof(ctio->u.status1.sense_data));
2691 }
2692
2693 /* Sense with len > 24, is it possible ??? */
2694}
2695
f83adb61
QT		 2696static inline int
2697qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2698{
f83adb61
QT		 2699 switch (se_cmd->prot_op) {
2700 case TARGET_PROT_DOUT_INSERT:
2701 case TARGET_PROT_DIN_STRIP:
2702 if (ql2xenablehba_err_chk >= 1)
2703 return 1;
2704 break;
2705 case TARGET_PROT_DOUT_PASS:
2706 case TARGET_PROT_DIN_PASS:
2707 if (ql2xenablehba_err_chk >= 2)
2708 return 1;
2709 break;
2710 case TARGET_PROT_DIN_INSERT:
2711 case TARGET_PROT_DOUT_STRIP:
2712 return 1;
2713 default:
2714 break;
2715 }
2716 return 0;
2717}
2718
be25152c
QT		 2719static inline int
2720qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2721{
2722 switch (se_cmd->prot_op) {
2723 case TARGET_PROT_DIN_INSERT:
2724 case TARGET_PROT_DOUT_INSERT:
2725 case TARGET_PROT_DIN_STRIP:
2726 case TARGET_PROT_DOUT_STRIP:
2727 case TARGET_PROT_DIN_PASS:
2728 case TARGET_PROT_DOUT_PASS:
2729 return 1;
2730 default:
2731 return 0;
2732 }
2733 return 0;
2734}
2735
f83adb61 2736/*
be25152c 2737 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2738 */
be25152c
QT		 2739static void
2740qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2741 uint16_t *pfw_prot_opts)
f83adb61 2742{
be25152c 2743 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2744 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2745 scsi_qla_host_t *vha = cmd->tgt->vha;
2746 struct qla_hw_data *ha = vha->hw;
2747 uint32_t t32 = 0;
f83adb61 2748
be25152c
QT		 2749 /*
2750 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2751 * have been immplemented by TCM, before AppTag is avail.
2752 * Look for modesense_handlers[]
2753 */
c7ee3bd4 2754 ctx->app_tag = 0;
f83adb61
QT		 2755 ctx->app_tag_mask[0] = 0x0;
2756 ctx->app_tag_mask[1] = 0x0;
2757
be25152c
QT		 2758 if (IS_PI_UNINIT_CAPABLE(ha)) {
2759 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2760 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2761 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2762 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2763 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2764 }
2765
2766 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2767
f83adb61
QT		 2768 switch (se_cmd->prot_type) {
2769 case TARGET_DIF_TYPE0_PROT:
2770 /*
be25152c
QT		 2771 * No check for ql2xenablehba_err_chk, as it
2772 * would be an I/O error if hba tag generation
2773 * is not done.
f83adb61
QT		 2774 */
2775 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2776 /* enable ALL bytes of the ref tag */
2777 ctx->ref_tag_mask[0] = 0xff;
2778 ctx->ref_tag_mask[1] = 0xff;
2779 ctx->ref_tag_mask[2] = 0xff;
2780 ctx->ref_tag_mask[3] = 0xff;
2781 break;
f83adb61 2782 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2783 /*
2784 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2785 * REF tag, and 16 bit app tag.
2786 */
2787 ctx->ref_tag = cpu_to_le32(lba);
2788 if (!qla_tgt_ref_mask_check(se_cmd) ||
2789 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2790 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2791 break;
2792 }
2793 /* enable ALL bytes of the ref tag */
2794 ctx->ref_tag_mask[0] = 0xff;
2795 ctx->ref_tag_mask[1] = 0xff;
2796 ctx->ref_tag_mask[2] = 0xff;
2797 ctx->ref_tag_mask[3] = 0xff;
2798 break;
f83adb61 2799 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2800 /*
2801 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2802 * tag has to match LBA in CDB + N
2803 */
2804 ctx->ref_tag = cpu_to_le32(lba);
2805 if (!qla_tgt_ref_mask_check(se_cmd) ||
2806 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2807 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2808 break;
2809 }
2810 /* enable ALL bytes of the ref tag */
2811 ctx->ref_tag_mask[0] = 0xff;
2812 ctx->ref_tag_mask[1] = 0xff;
2813 ctx->ref_tag_mask[2] = 0xff;
2814 ctx->ref_tag_mask[3] = 0xff;
2815 break;
f83adb61 2816 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2817 /* For TYPE 3 protection: 16 bit GUARD only */
2818 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2819 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2820 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2821 break;
f83adb61
QT		 2822 }
2823}
2824
f83adb61 2825static inline int
82de802a 2826qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61
QT		 2827{
2828 uint32_t *cur_dsd;
f83adb61
QT		 2829 uint32_t transfer_length = 0;
2830 uint32_t data_bytes;
2831 uint32_t dif_bytes;
2832 uint8_t bundling = 1;
2833 uint8_t *clr_ptr;
2834 struct crc_context *crc_ctx_pkt = NULL;
2835 struct qla_hw_data *ha;
2836 struct ctio_crc2_to_fw *pkt;
2837 dma_addr_t crc_ctx_dma;
2838 uint16_t fw_prot_opts = 0;
2839 struct qla_tgt_cmd *cmd = prm->cmd;
2840 struct se_cmd *se_cmd = &cmd->se_cmd;
2841 uint32_t h;
2842 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2843 struct qla_tc_param tc;
c7ee3bd4 2844 uint16_t t16;
82de802a 2845 scsi_qla_host_t *vha = cmd->vha;
f83adb61 2846
f83adb61
QT		 2847 ha = vha->hw;
2848
82de802a 2849 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 2850 prm->pkt = pkt;
2851 memset(pkt, 0, sizeof(*pkt));
2852
22d84726 2853 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 2854 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 2855 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 2856 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2857
2858 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2859 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2860 bundling = 0;
2861
2862 /* Compute dif len and adjust data len to incude protection */
2863 data_bytes = cmd->bufflen;
2864 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2865
2866 switch (se_cmd->prot_op) {
2867 case TARGET_PROT_DIN_INSERT:
2868 case TARGET_PROT_DOUT_STRIP:
2869 transfer_length = data_bytes;
be25152c
QT		 2870 if (cmd->prot_sg_cnt)
2871 data_bytes += dif_bytes;
f83adb61 2872 break;
f83adb61
QT		 2873 case TARGET_PROT_DIN_STRIP:
2874 case TARGET_PROT_DOUT_INSERT:
2875 case TARGET_PROT_DIN_PASS:
2876 case TARGET_PROT_DOUT_PASS:
2877 transfer_length = data_bytes + dif_bytes;
2878 break;
f83adb61
QT		 2879 default:
2880 BUG();
2881 break;
2882 }
2883
2884 if (!qlt_hba_err_chk_enabled(se_cmd))
2885 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2886 /* HBA error checking enabled */
2887 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2888 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2889 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2890 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2891 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2892 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2893 }
2894
2895 switch (se_cmd->prot_op) {
2896 case TARGET_PROT_DIN_INSERT:
2897 case TARGET_PROT_DOUT_INSERT:
2898 fw_prot_opts |= PO_MODE_DIF_INSERT;
2899 break;
2900 case TARGET_PROT_DIN_STRIP:
2901 case TARGET_PROT_DOUT_STRIP:
2902 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2903 break;
2904 case TARGET_PROT_DIN_PASS:
2905 case TARGET_PROT_DOUT_PASS:
2906 fw_prot_opts |= PO_MODE_DIF_PASS;
2907 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2908 break;
2909 default:/* Normal Request */
2910 fw_prot_opts |= PO_MODE_DIF_PASS;
2911 break;
2912 }
2913
f83adb61
QT		 2914 /* ---- PKT ---- */
2915 /* Update entry type to indicate Command Type CRC_2 IOCB */
2916 pkt->entry_type = CTIO_CRC2;
2917 pkt->entry_count = 1;
22d84726 2918 pkt->vp_index = cmd->vp_idx;
f83adb61 2919
82de802a 2920 h = qlt_make_handle(qpair);
f83adb61
QT		 2921 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2922 /*
2923 * CTIO type 7 from the firmware doesn't provide a way to
2924 * know the initiator's LOOP ID, hence we can't find
2925 * the session and, so, the command.
2926 */
2927 return -EAGAIN;
2928 } else
82de802a 2929 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 2930
82de802a
QT		 2931 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2932 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 2933 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2934 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2935 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2936 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2937 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2938 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2939
2940 /* silence compile warning */
2941 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2942 pkt->ox_id = cpu_to_le16(t16);
2943
2944 t16 = (atio->u.isp24.attr << 9);
2945 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2946 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2947
2948 /* Set transfer direction */
2949 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2950 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2951 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2952 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2953
f83adb61
QT		 2954 pkt->dseg_count = prm->tot_dsds;
2955 /* Fibre channel byte count */
2956 pkt->transfer_length = cpu_to_le32(transfer_length);
2957
f83adb61
QT		 2958 /* ----- CRC context -------- */
2959
2960 /* Allocate CRC context from global pool */
2961 crc_ctx_pkt = cmd->ctx =
2962 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2963
2964 if (!crc_ctx_pkt)
2965 goto crc_queuing_error;
2966
2967 /* Zero out CTX area. */
2968 clr_ptr = (uint8_t *)crc_ctx_pkt;
2969 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2970
2971 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2972 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2973
2974 /* Set handle */
2975 crc_ctx_pkt->handle = pkt->handle;
2976
be25152c 2977 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 2978
2979 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2980 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2981 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2982
f83adb61
QT		 2983 if (!bundling) {
2984 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2985 } else {
2986 /*
2987 * Configure Bundling if we need to fetch interlaving
2988 * protection PCI accesses
2989 */
2990 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2991 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2992 crc_ctx_pkt->u.bundling.dseg_count =
2993 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
2994 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
2995 }
2996
2997 /* Finish the common fields of CRC pkt */
2998 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
2999 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3000 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3001 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3002
be25152c
QT		 3003 memset((uint8_t *)&tc, 0 , sizeof(tc));
3004 tc.vha = vha;
3005 tc.blk_sz = cmd->blk_sz;
3006 tc.bufflen = cmd->bufflen;
3007 tc.sg = cmd->sg;
3008 tc.prot_sg = cmd->prot_sg;
3009 tc.ctx = crc_ctx_pkt;
3010 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3011
3012 /* Walks data segments */
ad950360 3013 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3014
3015 if (!bundling && prm->prot_seg_cnt) {
3016 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3017 prm->tot_dsds, &tc))
f83adb61
QT		 3018 goto crc_queuing_error;
3019 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3020 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3021 goto crc_queuing_error;
3022
3023 if (bundling && prm->prot_seg_cnt) {
3024 /* Walks dif segments */
c7ee3bd4 3025 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 3026
3027 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3028 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 3029 prm->prot_seg_cnt, &tc))
f83adb61
QT		 3030 goto crc_queuing_error;
3031 }
3032 return QLA_SUCCESS;
3033
3034crc_queuing_error:
3035 /* Cleanup will be performed by the caller */
82de802a 3036 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3037
3038 return QLA_FUNCTION_FAILED;
3039}
3040
2d70c103
NB		 3041/*
3042 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3043 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3044 */
3045int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3046 uint8_t scsi_status)
3047{
3048 struct scsi_qla_host *vha = cmd->vha;
82de802a 3049 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3050 struct ctio7_to_24xx *pkt;
3051 struct qla_tgt_prm prm;
3052 uint32_t full_req_cnt = 0;
3053 unsigned long flags = 0;
3054 int res;
3055
726b8548 3056 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3057 cmd->state = QLA_TGT_STATE_PROCESSED;
3058 if (cmd->sess->logout_completed)
3059 /* no need to terminate. FW already freed exchange. */
3060 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3061 else
82de802a 3062 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
a6ca8878
AP		 3063 return 0;
3064 }
a6ca8878 3065
22d84726 3066 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3067 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3068 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3069 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3070 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3071
3072 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3073 &full_req_cnt);
3074 if (unlikely(res != 0)) {
2d70c103
NB		 3075 return res;
3076 }
3077
82de802a 3078 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3079
ce1025cd
HM		 3080 if (xmit_type == QLA_TGT_XMIT_STATUS)
3081 vha->tgt_counters.core_qla_snd_status++;
3082 else
3083 vha->tgt_counters.core_qla_que_buf++;
3084
7c3f8fd1 3085 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3086 /*
3bb67df5 3087 * Either the port is not online or this request was from
b6a029e1
AE		 3088 * previous life, just abort the processing.
3089 */
3090 cmd->state = QLA_TGT_STATE_PROCESSED;
3091 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3092 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3093 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3094 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3095 cmd->reset_count, qpair->chip_reset);
82de802a 3096 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3097 return 0;
3098 }
3099
2d70c103 3100 /* Does F/W have an IOCBs for this request */
82de802a 3101 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3102 if (unlikely(res))
3103 goto out_unmap_unlock;
3104
f83adb61 3105 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3106 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3107 else
82de802a 3108 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3109 if (unlikely(res != 0)) {
82de802a 3110 qpair->req->cnt += full_req_cnt;
2d70c103 3111 goto out_unmap_unlock;
810e30bc 3112 }
2d70c103
NB		 3113
3114 pkt = (struct ctio7_to_24xx *)prm.pkt;
3115
3116 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3117 pkt->u.status0.flags |=
ad950360 3118 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3119 CTIO7_FLAGS_STATUS_MODE_0);
3120
f83adb61 3121 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3122 qlt_load_data_segments(&prm);
2d70c103
NB		 3123
3124 if (prm.add_status_pkt == 0) {
3125 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3126 pkt->u.status0.scsi_status =
3127 cpu_to_le16(prm.rq_result);
3128 pkt->u.status0.residual =
3129 cpu_to_le32(prm.residual);
ad950360 3130 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3131 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3132 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3133 pkt->u.status0.flags |=
ad950360 3134 cpu_to_le16(
2d70c103
NB		 3135 CTIO7_FLAGS_EXPLICIT_CONFORM |
3136 CTIO7_FLAGS_CONFORM_REQ);
3137 }
3138 }
3139
3140 } else {
3141 /*
3142 * We have already made sure that there is sufficient
3143 * amount of request entries to not drop HW lock in
3144 * req_pkt().
3145 */
3146 struct ctio7_to_24xx *ctio =
82de802a
QT		 3147 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3148 qpair->req);
2d70c103 3149
22d84726 3150 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3151 "Building additional status packet 0x%p.\n",
3152 ctio);
2d70c103 3153
f83adb61
QT		 3154 /*
3155 * T10Dif: ctio_crc2_to_fw overlay ontop of
3156 * ctio7_to_24xx
3157 */
2d70c103 3158 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3159 /* reset back to CTIO7 */
2d70c103 3160 ctio->entry_count = 1;
f83adb61 3161 ctio->entry_type = CTIO_TYPE7;
2d70c103 3162 ctio->dseg_count = 0;
ad950360 3163 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3164 CTIO7_FLAGS_DATA_IN);
3165
3166 /* Real finish is ctio_m1's finish */
3167 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3168 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3169 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3170
3171 /* qlt_24xx_init_ctio_to_isp will correct
3172 * all neccessary fields that's part of CTIO7.
3173 * There should be no residual of CTIO-CRC2 data.
3174 */
2d70c103
NB		 3175 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3176 &prm);
2d70c103
NB		 3177 }
3178 } else
3179 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3180
3181
3182 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3183 cmd->cmd_sent_to_fw = 1;
2d70c103 3184
63163e06
HM		 3185 /* Memory Barrier */
3186 wmb();
8abfa9e2
QT		 3187 if (qpair->reqq_start_iocbs)
3188 qpair->reqq_start_iocbs(qpair);
3189 else
3190 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3191 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3192
3193 return 0;
3194
3195out_unmap_unlock:
f9b6721a 3196 qlt_unmap_sg(vha, cmd);
82de802a 3197 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3198
3199 return res;
3200}
3201EXPORT_SYMBOL(qlt_xmit_response);
3202
3203int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3204{
3205 struct ctio7_to_24xx *pkt;
3206 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3207 struct qla_tgt *tgt = cmd->tgt;
3208 struct qla_tgt_prm prm;
82de802a 3209 unsigned long flags = 0;
2d70c103 3210 int res = 0;
82de802a 3211 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3212
3213 memset(&prm, 0, sizeof(prm));
3214 prm.cmd = cmd;
3215 prm.tgt = tgt;
3216 prm.sg = NULL;
3217 prm.req_cnt = 1;
3218
2d70c103
NB		 3219 /* Calculate number of entries and segments required */
3220 if (qlt_pci_map_calc_cnt(&prm) != 0)
3221 return -EAGAIN;
3222
7c3f8fd1 3223 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3224 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3225 /*
3bb67df5 3226 * Either the port is not online or this request was from
b6a029e1
AE		 3227 * previous life, just abort the processing.
3228 */
3229 cmd->state = QLA_TGT_STATE_NEED_DATA;
3230 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3231 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3232 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3233 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3234 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3235 return 0;
3236 }
3237
82de802a 3238 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3239 /* Does F/W have an IOCBs for this request */
82de802a 3240 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3241 if (res != 0)
3242 goto out_unlock_free_unmap;
f83adb61 3243 if (cmd->se_cmd.prot_op)
82de802a 3244 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3245 else
82de802a 3246 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3247
810e30bc 3248 if (unlikely(res != 0)) {
82de802a 3249 qpair->req->cnt += prm.req_cnt;
2d70c103 3250 goto out_unlock_free_unmap;
810e30bc
QT		 3251 }
3252
2d70c103 3253 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3254 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3255 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3256
3257 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3258 qlt_load_data_segments(&prm);
2d70c103
NB		 3259
3260 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3261 cmd->cmd_sent_to_fw = 1;
2d70c103 3262
63163e06
HM		 3263 /* Memory Barrier */
3264 wmb();
8abfa9e2
QT		 3265 if (qpair->reqq_start_iocbs)
3266 qpair->reqq_start_iocbs(qpair);
3267 else
3268 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3269 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3270
3271 return res;
3272
3273out_unlock_free_unmap:
f9b6721a 3274 qlt_unmap_sg(vha, cmd);
82de802a 3275 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3276
3277 return res;
3278}
3279EXPORT_SYMBOL(qlt_rdy_to_xfer);
3280
f83adb61
QT		 3281
3282/*
be25152c 3283 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3284 */
be25152c 3285static void
8abfa9e2 3286qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3287 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3288{
3289 uint8_t *ap = &sts->actual_dif[0];
3290 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3291 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3292 uint8_t scsi_status, sense_key, asc, ascq;
3293 unsigned long flags;
8abfa9e2 3294 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3295
be25152c 3296 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3297
be25152c
QT		 3298 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3299 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3300 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3301
be25152c
QT		 3302 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3303 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3304 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3305
be25152c
QT		 3306 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3307 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3308
be25152c 3309 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3310
be25152c
QT		 3311 /* check appl tag */
3312 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3313 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3314 "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]",
3315 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3316 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3317 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3318 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3319
3320 cmd->dif_err_code = DIF_ERR_APP;
3321 scsi_status = SAM_STAT_CHECK_CONDITION;
3322 sense_key = ABORTED_COMMAND;
3323 asc = 0x10;
3324 ascq = 0x2;
f83adb61
QT		 3325 }
3326
3327 /* check ref tag */
be25152c 3328 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3329 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3330 "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] ",
3331 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3332 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3333 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3334 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3335
3336 cmd->dif_err_code = DIF_ERR_REF;
3337 scsi_status = SAM_STAT_CHECK_CONDITION;
3338 sense_key = ABORTED_COMMAND;
3339 asc = 0x10;
3340 ascq = 0x3;
f83adb61
QT		 3341 goto out;
3342 }
3343
be25152c
QT		 3344 /* check guard */
3345 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3346 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3347 "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]",
3348 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3349 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3350 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3351 cmd->atio.u.isp24.fcp_hdr.ox_id);
3352
be25152c
QT		 3353 cmd->dif_err_code = DIF_ERR_GRD;
3354 scsi_status = SAM_STAT_CHECK_CONDITION;
3355 sense_key = ABORTED_COMMAND;
3356 asc = 0x10;
3357 ascq = 0x1;
f83adb61
QT		 3358 }
3359out:
be25152c
QT		 3360 switch (cmd->state) {
3361 case QLA_TGT_STATE_NEED_DATA:
3362 /* handle_data will load DIF error code */
3363 cmd->state = QLA_TGT_STATE_DATA_IN;
3364 vha->hw->tgt.tgt_ops->handle_data(cmd);
3365 break;
3366 default:
3367 spin_lock_irqsave(&cmd->cmd_lock, flags);
3368 if (cmd->aborted) {
3369 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3370 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3371 break;
3372 }
3373 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3374
8abfa9e2
QT		 3375 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3376 ascq);
be25152c
QT		 3377 /* assume scsi status gets out on the wire.
3378 * Will not wait for completion.
3379 */
3380 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3381 break;
3382 }
3383}
f83adb61 3384
a6ca8878
AP		 3385/* If hardware_lock held on entry, might drop it, then reaquire */
3386/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3387static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3388 struct imm_ntfy_from_isp *ntfy)
3389{
3390 struct nack_to_isp *nack;
3391 struct qla_hw_data *ha = vha->hw;
3392 request_t *pkt;
3393 int ret = 0;
3394
3395 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3396 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3397
ec7193e2 3398 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3399 if (pkt == NULL) {
3400 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3401 "qla_target(%d): %s failed: unable to allocate "
3402 "request packet\n", vha->vp_idx, __func__);
3403 return -ENOMEM;
3404 }
3405
3406 pkt->entry_type = NOTIFY_ACK_TYPE;
3407 pkt->entry_count = 1;
4f060736 3408 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3409
3410 nack = (struct nack_to_isp *)pkt;
3411 nack->ox_id = ntfy->ox_id;
3412
3413 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3414 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3415 nack->u.isp24.flags = ntfy->u.isp24.flags &
3416 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3417 }
3418
3419 /* terminate */
3420 nack->u.isp24.flags |=
3421 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3422
3423 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3424 nack->u.isp24.status = ntfy->u.isp24.status;
3425 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3426 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3427 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3428 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3429 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3430 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3431
3432 qla2x00_start_iocbs(vha, vha->req);
3433 return ret;
3434}
3435
3436static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3437 struct imm_ntfy_from_isp *imm, int ha_locked)
3438{
3439 unsigned long flags = 0;
3440 int rc;
3441
a6ca8878
AP		 3442 if (ha_locked) {
3443 rc = __qlt_send_term_imm_notif(vha, imm);
3444
3445#if 0 /* Todo */
3446 if (rc == -ENOMEM)
3447 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3448#else
3449 if (rc) {
3450 }
a6ca8878
AP		 3451#endif
3452 goto done;
3453 }
3454
3455 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3456 rc = __qlt_send_term_imm_notif(vha, imm);
3457
3458#if 0 /* Todo */
3459 if (rc == -ENOMEM)
3460 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3461#endif
3462
3463done:
3464 if (!ha_locked)
3465 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3466}
3467
83548fe2
QT		 3468/*
3469 * If hardware_lock held on entry, might drop it, then reaquire
3470 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3471 */
82de802a 3472static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3473 struct qla_tgt_cmd *cmd,
3474 struct atio_from_isp *atio)
3475{
82de802a 3476 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3477 struct ctio7_to_24xx *ctio24;
3478 struct qla_hw_data *ha = vha->hw;
3479 request_t *pkt;
3480 int ret = 0;
33a5fcee 3481 uint16_t temp;
2d70c103 3482
83548fe2 3483 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3484
82de802a 3485 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3486 if (pkt == NULL) {
3487 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3488 "qla_target(%d): %s failed: unable to allocate "
3489 "request packet\n", vha->vp_idx, __func__);
3490 return -ENOMEM;
3491 }
3492
3493 if (cmd != NULL) {
3494 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3495 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3496 "qla_target(%d): Terminating cmd %p with "
3497 "incorrect state %d\n", vha->vp_idx, cmd,
3498 cmd->state);
3499 } else
3500 ret = 1;
3501 }
3502
ce1025cd 3503 vha->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3504 pkt->entry_count = 1;
3505 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3506
3507 ctio24 = (struct ctio7_to_24xx *)pkt;
3508 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3509 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3510 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3511 ctio24->vp_index = vha->vp_idx;
3512 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3513 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3514 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3515 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3516 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3517 CTIO7_FLAGS_TERMINATE;
3518 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3519 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3520 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3521
3522 /* Most likely, it isn't needed */
3523 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3524 &atio->u.isp24.fcp_cmnd.add_cdb[
3525 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3526 if (ctio24->u.status1.residual != 0)
3527 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3528
63163e06
HM		 3529 /* Memory Barrier */
3530 wmb();
8abfa9e2
QT		 3531 if (qpair->reqq_start_iocbs)
3532 qpair->reqq_start_iocbs(qpair);
3533 else
3534 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3535 return ret;
3536}
3537
82de802a 3538static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3539 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3540 int ul_abort)
2d70c103 3541{
82de802a 3542 struct scsi_qla_host *vha;
6bc85dd5 3543 unsigned long flags = 0;
2d70c103
NB		 3544 int rc;
3545
82de802a
QT		 3546 /* why use different vha? NPIV */
3547 if (cmd)
3548 vha = cmd->vha;
3549 else
3550 vha = qpair->vha;
2d70c103
NB		 3551
3552 if (ha_locked) {
82de802a 3553 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3554 if (rc == -ENOMEM)
3555 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3556 goto done;
3557 }
82de802a
QT		 3558 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3559 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3560 if (rc == -ENOMEM)
3561 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3562
2d70c103 3563done:
a07100e0 3564 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3565 if (cmd->sg_mapped)
3566 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3567 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3568 }
6bc85dd5
HM		 3569
3570 if (!ha_locked)
82de802a 3571 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3572
7b898542 3573 return;
2d70c103
NB		 3574}
3575
33e79977
QT		 3576static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3577{
3578 struct list_head free_list;
3579 struct qla_tgt_cmd *cmd, *tcmd;
3580
3581 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3582 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3583
3584 cmd = tcmd = NULL;
3585 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3586 INIT_LIST_HEAD(&free_list);
3587 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3588
3589 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3590 list_del(&cmd->cmd_list);
3591 /* This cmd was never sent to TCM. There is no need
3592 * to schedule free or call free_cmd
3593 */
3594 qlt_free_cmd(cmd);
3595 vha->hw->tgt.num_qfull_cmds_alloc--;
3596 }
3597 }
3598 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3599}
3600
3601static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3602{
3603 uint32_t total_leaked;
3604
3605 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3606
3607 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3608 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3609
3610 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3611 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3612 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3613
3614 if (IS_P3P_TYPE(vha->hw))
3615 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3616 else
3617 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3618 qla2xxx_wake_dpc(vha);
3619 }
3620
3621}
3622
a07100e0 3623int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3624{
3625 struct qla_tgt *tgt = cmd->tgt;
3626 struct scsi_qla_host *vha = tgt->vha;
3627 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3628 unsigned long flags;
7359df25
AP		 3629
3630 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3631 "qla_target(%d): terminating exchange for aborted cmd=%p "
3632 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3633 se_cmd->tag);
3634
a07100e0
QT		 3635 spin_lock_irqsave(&cmd->cmd_lock, flags);
3636 if (cmd->aborted) {
3637 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3638 /*
3639 * It's normal to see 2 calls in this path:
3640 * 1) XFER Rdy completion + CMD_T_ABORT
3641 * 2) TCM TMR - drain_state_list
3642 */
83548fe2
QT		 3643 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3644 "multiple abort. %p transport_state %x, t_state %x, "
3645 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3646 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3647 return EIO;
3648 }
193b50b9 3649 cmd->aborted = 1;
1eb42f96 3650 cmd->trc_flags |= TRC_ABORT;
a07100e0 3651 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3652
82de802a 3653 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3654 return 0;
7359df25
AP		 3655}
3656EXPORT_SYMBOL(qlt_abort_cmd);
3657
2d70c103
NB		 3658void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3659{
5d964837 3660 struct fc_port *sess = cmd->sess;
51a07f84 3661
f83adb61
QT		 3662 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3663 "%s: se_cmd[%p] ox_id %04x\n",
3664 __func__, &cmd->se_cmd,
3665 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3666
e07f8f65
SK		 3667 BUG_ON(cmd->cmd_in_wq);
3668
a07100e0
QT		 3669 if (cmd->sg_mapped)
3670 qlt_unmap_sg(cmd->vha, cmd);
3671
33e79977
QT		 3672 if (!cmd->q_full)
3673 qlt_decr_num_pend_cmds(cmd->vha);
3674
f83adb61 3675 BUG_ON(cmd->sg_mapped);
e07f8f65 3676 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3677 if (unlikely(cmd->free_sg))
3678 kfree(cmd->sg);
51a07f84
NB		 3679
3680 if (!sess || !sess->se_sess) {
3681 WARN_ON(1);
3682 return;
3683 }
e07f8f65 3684 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3685 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3686}
3687EXPORT_SYMBOL(qlt_free_cmd);
3688
2d70c103
NB		 3689/*
3690 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3691 */
82de802a 3692static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3693 struct qla_tgt_cmd *cmd, uint32_t status)
3694{
3695 int term = 0;
82de802a 3696 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3697
be25152c 3698 if (cmd->se_cmd.prot_op)
83548fe2 3699 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3700 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3701 "se_cmd=%p tag[%x] op %#x/%s",
3702 cmd->lba, cmd->lba,
3703 cmd->num_blks, &cmd->se_cmd,
3704 cmd->atio.u.isp24.exchange_addr,
3705 cmd->se_cmd.prot_op,
3706 prot_op_str(cmd->se_cmd.prot_op));
3707
2d70c103
NB		 3708 if (ctio != NULL) {
3709 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3710 term = !(c->flags &
ad950360 3711 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3712 } else
3713 term = 1;
3714
3715 if (term)
82de802a 3716 qlt_term_ctio_exchange(qpair, ctio, cmd, status);
2d70c103
NB		 3717
3718 return term;
3719}
3720
2d70c103
NB		 3721
3722/* ha->hardware_lock supposed to be held on entry */
3723static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3724 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103
NB		 3725{
3726 struct qla_tgt_cmd *cmd = NULL;
82de802a
QT		 3727 struct req_que *req;
3728 int qid = GET_QID(handle);
3729 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3730
82de802a
QT		 3731 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3732 return NULL;
2d70c103 3733
82de802a
QT		 3734 if (qid == rsp->req->id) {
3735 req = rsp->req;
3736 } else if (vha->hw->req_q_map[qid]) {
3737 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3738 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3739 vha->vp_idx, rsp->id, handle);
3740 req = vha->hw->req_q_map[qid];
3741 } else {
3742 return NULL;
3743 }
667024a3 3744
82de802a 3745 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3746
82de802a
QT		 3747 if (h != QLA_TGT_NULL_HANDLE) {
3748 if (unlikely(h > req->num_outstanding_cmds)) {
2d70c103
NB		 3749 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3750 "qla_target(%d): Wrong handle %x received\n",
3751 vha->vp_idx, handle);
3752 return NULL;
3753 }
82de802a
QT		 3754
3755 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3756 if (unlikely(cmd == NULL)) {
c5419e26 3757 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3758 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3759 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3760 return NULL;
3761 }
82de802a 3762 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3763 } else if (ctio != NULL) {
3764 /* We can't get loop ID from CTIO7 */
3765 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3766 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3767 "support NULL handles\n", vha->vp_idx);
3768 return NULL;
3769 }
3770
3771 return cmd;
3772}
3773
c0cb4496 3774/* hardware_lock should be held by caller. */
c5419e26 3775void
c0cb4496
AE		 3776qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3777{
3778 struct qla_hw_data *ha = vha->hw;
c0cb4496
AE		 3779
3780 if (cmd->sg_mapped)
3781 qlt_unmap_sg(vha, cmd);
3782
c0cb4496
AE		 3783 /* TODO: fix debug message type and ids. */
3784 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3785 ql_dbg(ql_dbg_io, vha, 0xff00,
82de802a 3786 "HOST-ABORT: state=PROCESSED.\n");
c0cb4496
AE		 3787 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3788 cmd->write_data_transferred = 0;
3789 cmd->state = QLA_TGT_STATE_DATA_IN;
3790
3791 ql_dbg(ql_dbg_io, vha, 0xff01,
82de802a 3792 "HOST-ABORT: state=DATA_IN.\n");
c0cb4496
AE		 3793
3794 ha->tgt.tgt_ops->handle_data(cmd);
3795 return;
c0cb4496
AE		 3796 } else {
3797 ql_dbg(ql_dbg_io, vha, 0xff03,
82de802a 3798 "HOST-ABORT: state=BAD(%d).\n",
c0cb4496
AE		 3799 cmd->state);
3800 dump_stack();
3801 }
3802
1eb42f96 3803 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3804 ha->tgt.tgt_ops->free_cmd(cmd);
3805}
3806
2d70c103
NB		 3807/*
3808 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3809 */
82de802a
QT		 3810static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3811 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3812{
3813 struct qla_hw_data *ha = vha->hw;
3814 struct se_cmd *se_cmd;
2d70c103 3815 struct qla_tgt_cmd *cmd;
82de802a 3816 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3817
2d70c103
NB		 3818 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3819 /* That could happen only in case of an error/reset/abort */
3820 if (status != CTIO_SUCCESS) {
3821 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3822 "Intermediate CTIO received"
3823 " (status %x)\n", status);
3824 }
3825 return;
3826 }
3827
82de802a 3828 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3829 if (cmd == NULL)
2d70c103 3830 return;
092e1dc3 3831
2d70c103 3832 se_cmd = &cmd->se_cmd;
d564a372 3833 cmd->cmd_sent_to_fw = 0;
2d70c103 3834
f9b6721a 3835 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3836
3837 if (unlikely(status != CTIO_SUCCESS)) {
3838 switch (status & 0xFFFF) {
3839 case CTIO_LIP_RESET:
3840 case CTIO_TARGET_RESET:
3841 case CTIO_ABORTED:
7b898542 3842 /* driver request abort via Terminate exchange */
2d70c103
NB		 3843 case CTIO_TIMEOUT:
3844 case CTIO_INVALID_RX_ID:
3845 /* They are OK */
3846 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3847 "qla_target(%d): CTIO with "
3848 "status %#x received, state %x, se_cmd %p, "
3849 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3850 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3851 status, cmd->state, se_cmd);
3852 break;
3853
3854 case CTIO_PORT_LOGGED_OUT:
3855 case CTIO_PORT_UNAVAILABLE:
71cdc079 3856 {
dacb5822
HM		 3857 int logged_out =
3858 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3859
2d70c103 3860 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3861 "qla_target(%d): CTIO with %s status %x "
2d70c103 3862 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3863 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3864 status, cmd->state, se_cmd);
2d70c103 3865
71cdc079
AP		 3866 if (logged_out && cmd->sess) {
3867 /*
3868 * Session is already logged out, but we need
3869 * to notify initiator, who's not aware of this
3870 */
3871 cmd->sess->logout_on_delete = 0;
3872 cmd->sess->send_els_logo = 1;
83548fe2 3873 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3874 "%s %d %8phC post del sess\n",
3875 __func__, __LINE__, cmd->sess->port_name);
3876
3877 qlt_schedule_sess_for_deletion_lock(cmd->sess);
71cdc079
AP		 3878 }
3879 break;
3880 }
f83adb61
QT		 3881 case CTIO_DIF_ERROR: {
3882 struct ctio_crc_from_fw *crc =
3883 (struct ctio_crc_from_fw *)ctio;
3884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3885 "qla_target(%d): CTIO with DIF_ERROR status %x "
3886 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3887 "expect_dif[0x%llx]\n",
f83adb61
QT		 3888 vha->vp_idx, status, cmd->state, se_cmd,
3889 *((u64 *)&crc->actual_dif[0]),
3890 *((u64 *)&crc->expected_dif[0]));
3891
8abfa9e2 3892 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 3893 return;
f83adb61 3894 }
2d70c103
NB		 3895 default:
3896 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3897 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3898 vha->vp_idx, status, cmd->state, se_cmd);
3899 break;
3900 }
3901
7b898542 3902
193b50b9 3903 /* "cmd->aborted" means
7b898542
QT		 3904 * cmd is already aborted/terminated, we don't
3905 * need to terminate again. The exchange is already
3906 * cleaned up/freed at FW level. Just cleanup at driver
3907 * level.
3908 */
3909 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3910 (!cmd->aborted)) {
1eb42f96 3911 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 3912 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 3913 return;
7b898542 3914 }
2d70c103
NB		 3915 }
3916
3917 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3918 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3919 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3920 cmd->state = QLA_TGT_STATE_DATA_IN;
3921
52c82823 3922 if (status == CTIO_SUCCESS)
2d70c103
NB		 3923 cmd->write_data_transferred = 1;
3924
2d70c103
NB		 3925 ha->tgt.tgt_ops->handle_data(cmd);
3926 return;
193b50b9 3927 } else if (cmd->aborted) {
1eb42f96 3928 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3930 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3931 } else {
1eb42f96 3932 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3934 "qla_target(%d): A command in state (%d) should "
3935 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3936 }
3937
7b898542 3938 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3939 !cmd->aborted) {
2d70c103
NB		 3940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3941 dump_stack();
3942 }
3943
3944 ha->tgt.tgt_ops->free_cmd(cmd);
3945}
3946
2d70c103
NB		 3947static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3948 uint8_t task_codes)
3949{
3950 int fcp_task_attr;
3951
3952 switch (task_codes) {
3953 case ATIO_SIMPLE_QUEUE:
68d81f40 3954 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3955 break;
3956 case ATIO_HEAD_OF_QUEUE:
68d81f40 3957 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3958 break;
3959 case ATIO_ORDERED_QUEUE:
68d81f40 3960 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3961 break;
3962 case ATIO_ACA_QUEUE:
68d81f40 3963 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3964 break;
3965 case ATIO_UNTAGGED:
68d81f40 3966 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3967 break;
3968 default:
3969 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3970 "qla_target: unknown task code %x, use ORDERED instead\n",
3971 task_codes);
68d81f40 3972 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3973 break;
3974 }
3975
3976 return fcp_task_attr;
3977}
3978
5d964837 3979static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 3980 uint8_t *);
3981/*
3982 * Process context for I/O path into tcm_qla2xxx code
3983 */
51a07f84 3984static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3985{
2d70c103
NB		 3986 scsi_qla_host_t *vha = cmd->vha;
3987 struct qla_hw_data *ha = vha->hw;
5d964837 3988 struct fc_port *sess = cmd->sess;
2d70c103
NB		 3989 struct atio_from_isp *atio = &cmd->atio;
3990 unsigned char *cdb;
3991 unsigned long flags;
3992 uint32_t data_length;
3993 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 3994 struct qla_qpair *qpair = cmd->qpair;
2d70c103 3995
e07f8f65 3996 cmd->cmd_in_wq = 0;
1eb42f96 3997 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 3998
193b50b9 3999 if (cmd->aborted) {
8b2f5ff3
SN		 4000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4001 "cmd with tag %u is aborted\n",
4002 cmd->atio.u.isp24.exchange_addr);
4003 goto out_term;
4004 }
4005
a07100e0 4006 spin_lock_init(&cmd->cmd_lock);
2d70c103 4007 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4008 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4009
4010 if (atio->u.isp24.fcp_cmnd.rddata &&
4011 atio->u.isp24.fcp_cmnd.wrdata) {
4012 bidi = 1;
4013 data_dir = DMA_TO_DEVICE;
4014 } else if (atio->u.isp24.fcp_cmnd.rddata)
4015 data_dir = DMA_FROM_DEVICE;
4016 else if (atio->u.isp24.fcp_cmnd.wrdata)
4017 data_dir = DMA_TO_DEVICE;
4018 else
4019 data_dir = DMA_NONE;
4020
4021 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4022 atio->u.isp24.fcp_cmnd.task_attr);
4023 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4024 &atio->u.isp24.fcp_cmnd.add_cdb[
4025 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4026
51a07f84
NB		 4027 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4028 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4029 if (ret != 0)
4030 goto out_term;
4031 /*
4032 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4033 */
7560151b 4034 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4035 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4036 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4037 return;
4038
4039out_term:
667024a3 4040 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4041 /*
fae9eaf8
RD		 4042 * cmd has not sent to target yet, so pass NULL as the second
4043 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4044 */
1eb42f96 4045 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4046 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4047 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4048
4049 qlt_decr_num_pend_cmds(vha);
51a07f84 4050 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
82de802a 4051 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b
QT		 4052
4053 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4054 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4055 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4056}
4057
4058static void qlt_do_work(struct work_struct *work)
4059{
4060 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4061 scsi_qla_host_t *vha = cmd->vha;
4062 unsigned long flags;
4063
4064 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4065 list_del(&cmd->cmd_list);
4066 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4067
4068 __qlt_do_work(cmd);
4069}
4070
09620eeb
QT		 4071void qlt_clr_qp_table(struct scsi_qla_host *vha)
4072{
4073 unsigned long flags;
4074 struct qla_hw_data *ha = vha->hw;
4075 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4076 void *node;
4077 u64 key = 0;
4078
4079 ql_log(ql_log_info, vha, 0x706c,
4080 "User update Number of Active Qpairs %d\n",
4081 ha->tgt.num_act_qpairs);
4082
4083 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4084
4085 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4086 btree_remove64(&tgt->lun_qpair_map, key);
4087
4088 ha->base_qpair->lun_cnt = 0;
4089 for (key = 0; key < ha->max_qpairs; key++)
4090 if (ha->queue_pair_map[key])
4091 ha->queue_pair_map[key]->lun_cnt = 0;
4092
4093 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4094}
4095
e326d22a
QT		 4096static void qlt_assign_qpair(struct scsi_qla_host *vha,
4097 struct qla_tgt_cmd *cmd)
4098{
4099 struct qla_qpair *qpair, *qp;
4100 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4101 struct qla_qpair_hint *h;
4102
4103 if (vha->flags.qpairs_available) {
4104 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4105 if (unlikely(!h)) {
4106 /* spread lun to qpair ratio evently */
4107 int lcnt = 0, rc;
4108 struct scsi_qla_host *base_vha =
4109 pci_get_drvdata(vha->hw->pdev);
4110
4111 qpair = vha->hw->base_qpair;
4112 if (qpair->lun_cnt == 0) {
4113 qpair->lun_cnt++;
4114 h = qla_qpair_to_hint(tgt, qpair);
4115 BUG_ON(!h);
4116 rc = btree_insert64(&tgt->lun_qpair_map,
4117 cmd->unpacked_lun, h, GFP_ATOMIC);
4118 if (rc) {
4119 qpair->lun_cnt--;
4120 ql_log(ql_log_info, vha, 0xd037,
4121 "Unable to insert lun %llx into lun_qpair_map\n",
4122 cmd->unpacked_lun);
4123 }
4124 goto out;
4125 } else {
4126 lcnt = qpair->lun_cnt;
4127 }
4128
4129 h = NULL;
4130 list_for_each_entry(qp, &base_vha->qp_list,
4131 qp_list_elem) {
4132 if (qp->lun_cnt == 0) {
4133 qp->lun_cnt++;
4134 h = qla_qpair_to_hint(tgt, qp);
4135 BUG_ON(!h);
4136 rc = btree_insert64(&tgt->lun_qpair_map,
4137 cmd->unpacked_lun, h, GFP_ATOMIC);
4138 if (rc) {
4139 qp->lun_cnt--;
4140 ql_log(ql_log_info, vha, 0xd038,
4141 "Unable to insert lun %llx into lun_qpair_map\n",
4142 cmd->unpacked_lun);
4143 }
4144 qpair = qp;
4145 goto out;
4146 } else {
4147 if (qp->lun_cnt < lcnt) {
4148 lcnt = qp->lun_cnt;
4149 qpair = qp;
4150 continue;
4151 }
4152 }
4153 }
4154 BUG_ON(!qpair);
4155 qpair->lun_cnt++;
4156 h = qla_qpair_to_hint(tgt, qpair);
4157 BUG_ON(!h);
4158 rc = btree_insert64(&tgt->lun_qpair_map,
4159 cmd->unpacked_lun, h, GFP_ATOMIC);
4160 if (rc) {
4161 qpair->lun_cnt--;
4162 ql_log(ql_log_info, vha, 0xd039,
4163 "Unable to insert lun %llx into lun_qpair_map\n",
4164 cmd->unpacked_lun);
4165 }
4166 }
4167 } else {
4168 h = &tgt->qphints[0];
4169 }
4170out:
4171 cmd->qpair = h->qpair;
4172 cmd->se_cmd.cpuid = h->cpuid;
4173}
4174
51a07f84 4175static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4176 struct fc_port *sess,
51a07f84
NB		 4177 struct atio_from_isp *atio)
4178{
4179 struct se_session *se_sess = sess->se_sess;
4180 struct qla_tgt_cmd *cmd;
4181 int tag;
4182
4183 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4184 if (tag < 0)
4185 return NULL;
4186
4187 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4188 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4189 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4190 memcpy(&cmd->atio, atio, sizeof(*atio));
4191 cmd->state = QLA_TGT_STATE_NEW;
4192 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4193 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4194 cmd->vha = vha;
4195 cmd->se_cmd.map_tag = tag;
4196 cmd->sess = sess;
4197 cmd->loop_id = sess->loop_id;
4198 cmd->conf_compl_supported = sess->conf_compl_supported;
4199
1eb42f96 4200 cmd->trc_flags = 0;
9fce1254
KS		 4201 cmd->jiffies_at_alloc = get_jiffies_64();
4202
e326d22a
QT		 4203 cmd->unpacked_lun = scsilun_to_int(
4204 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4205 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4206 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4207 cmd->vp_idx = vha->vp_idx;
9fce1254 4208
51a07f84
NB		 4209 return cmd;
4210}
4211
51a07f84
NB		 4212static void qlt_create_sess_from_atio(struct work_struct *work)
4213{
4214 struct qla_tgt_sess_op *op = container_of(work,
4215 struct qla_tgt_sess_op, work);
4216 scsi_qla_host_t *vha = op->vha;
4217 struct qla_hw_data *ha = vha->hw;
5d964837 4218 struct fc_port *sess;
51a07f84
NB		 4219 struct qla_tgt_cmd *cmd;
4220 unsigned long flags;
4221 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4222
8b2f5ff3
SN		 4223 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4224 list_del(&op->cmd_list);
4225 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4226
4227 if (op->aborted) {
4228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4229 "sess_op with tag %u is aborted\n",
4230 op->atio.u.isp24.exchange_addr);
4231 goto out_term;
4232 }
4233
51a07f84 4234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 4235 "qla_target(%d): Unable to find wwn login"
4236 " (s_id %x:%x:%x), trying to create it manually\n",
4237 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 4238
4239 if (op->atio.u.raw.entry_count > 1) {
4240 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 4241 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 4242 goto out_term;
4243 }
4244
51a07f84
NB		 4245 sess = qlt_make_local_sess(vha, s_id);
4246 /* sess has an extra creation ref. */
51a07f84
NB		 4247
4248 if (!sess)
4249 goto out_term;
4250 /*
4251 * Now obtain a pre-allocated session tag using the original op->atio
4252 * packet header, and dispatch into __qlt_do_work() using the existing
4253 * process context.
4254 */
4255 cmd = qlt_get_tag(vha, sess, &op->atio);
4256 if (!cmd) {
82de802a
QT		 4257 struct qla_qpair *qpair = ha->base_qpair;
4258
4259 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4260 qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY);
4261 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4262
4263 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4264 ha->tgt.tgt_ops->put_sess(sess);
82de802a 4265 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4266 kfree(op);
4267 return;
4268 }
726b8548 4269
51a07f84 4270 /*
e3dc0e31 4271 * __qlt_do_work() will call qlt_put_sess() to release
51a07f84
NB		 4272 * the extra reference taken above by qlt_make_local_sess()
4273 */
4274 __qlt_do_work(cmd);
4275 kfree(op);
4276 return;
51a07f84 4277out_term:
82de802a 4278 qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0);
51a07f84 4279 kfree(op);
2d70c103
NB		 4280}
4281
4282/* ha->hardware_lock supposed to be held on entry */
4283static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4284 struct atio_from_isp *atio)
4285{
51a07f84 4286 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4288 struct fc_port *sess;
2d70c103 4289 struct qla_tgt_cmd *cmd;
5d964837 4290 unsigned long flags;
2d70c103
NB		 4291
4292 if (unlikely(tgt->tgt_stop)) {
667024a3 4293 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 4294 "New command while device %p is shutting down\n", tgt);
4295 return -EFAULT;
4296 }
4297
51a07f84
NB		 4298 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4299 if (unlikely(!sess)) {
4300 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4301 GFP_ATOMIC);
4302 if (!op)
4303 return -ENOMEM;
4304
4305 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 4306 op->vha = vha;
8b2f5ff3 4307
8b631d87 4308 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4309 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
8b631d87 4310 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4311
51a07f84
NB		 4312 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4313 queue_work(qla_tgt_wq, &op->work);
4314 return 0;
4315 }
e52a8b45
AP		 4316
4317 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4318 * session deletion, but it's still in sess_del_work wq */
726b8548 4319 if (sess->deleted) {
83548fe2 4320 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4321 "New command while old session %p is being deleted\n",
4322 sess);
4323 return -EFAULT;
4324 }
4325
51a07f84
NB		 4326 /*
4327 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4328 */
726b8548 4329 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4331 "%s: kref_get fail, %8phC oxid %x \n",
4332 __func__, sess->port_name,
4333 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4334 return -EFAULT;
4335 }
51a07f84
NB		 4336
4337 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4338 if (!cmd) {
667024a3 4339 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4340 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4341 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4342 ha->tgt.tgt_ops->put_sess(sess);
4343 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4344 return -ENOMEM;
4345 }
4346
e07f8f65 4347 cmd->cmd_in_wq = 1;
1eb42f96 4348 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4349
726b8548 4350 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4351 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4352 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4353
2d70c103 4354 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4355 if (vha->flags.qpairs_available) {
4356 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4357 } else if (ha->msix_count) {
fb3269ba
QT		 4358 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4359 queue_work_on(smp_processor_id(), qla_tgt_wq,
4360 &cmd->work);
4361 else
4362 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4363 &cmd->work);
4364 } else {
4365 queue_work(qla_tgt_wq, &cmd->work);
4366 }
2d70c103 4367
82de802a 4368 return 0;
2d70c103
NB		 4369}
4370
4371/* ha->hardware_lock supposed to be held on entry */
5d964837 4372static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4373 int fn, void *iocb, int flags)
4374{
4375 struct scsi_qla_host *vha = sess->vha;
4376 struct qla_hw_data *ha = vha->hw;
4377 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4378 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4379 int res;
2d70c103
NB		 4380
4381 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4382 if (!mcmd) {
4383 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4384 "qla_target(%d): Allocation of management "
4385 "command failed, some commands and their data could "
4386 "leak\n", vha->vp_idx);
4387 return -ENOMEM;
4388 }
4389 memset(mcmd, 0, sizeof(*mcmd));
4390 mcmd->sess = sess;
4391
4392 if (iocb) {
4393 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4394 sizeof(mcmd->orig_iocb.imm_ntfy));
4395 }
4396 mcmd->tmr_func = fn;
4397 mcmd->flags = flags;
7c3f8fd1 4398 mcmd->reset_count = ha->base_qpair->chip_reset;
82de802a 4399 mcmd->qpair = ha->base_qpair;
2d70c103
NB		 4400
4401 switch (fn) {
2d70c103 4402 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4403 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4404 break;
2d70c103
NB		 4405 }
4406
be92fc3f 4407 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4408 if (res != 0) {
4409 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4410 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4411 sess->vha->vp_idx, res);
4412 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4413 return -EFAULT;
4414 }
4415
4416 return 0;
4417}
4418
4419/* ha->hardware_lock supposed to be held on entry */
4420static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4421{
4422 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4423 struct qla_hw_data *ha = vha->hw;
4424 struct qla_tgt *tgt;
5d964837 4425 struct fc_port *sess;
f775bd14 4426 u64 unpacked_lun;
52c82823 4427 int fn;
7560151b 4428 unsigned long flags;
2d70c103 4429
0e8cd71c 4430 tgt = vha->vha_tgt.qla_tgt;
2d70c103 4431
2d70c103 4432 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4433
4434 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4435 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4436 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4437 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4438
f775bd14
QT		 4439 unpacked_lun =
4440 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 4441
4442 if (!sess) {
4443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4444 "qla_target(%d): task mgmt fn 0x%x for "
4445 "non-existant session\n", vha->vp_idx, fn);
4446 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4447 sizeof(struct atio_from_isp));
4448 }
4449
726b8548 4450 if (sess->deleted)
e52a8b45
AP		 4451 return -EFAULT;
4452
2d70c103
NB		 4453 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4454}
4455
4456/* ha->hardware_lock supposed to be held on entry */
4457static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4458 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4459{
4460 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4461 struct qla_hw_data *ha = vha->hw;
4462 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4463 u64 unpacked_lun;
2d70c103
NB		 4464 int rc;
4465
4466 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4467 if (mcmd == NULL) {
4468 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4469 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4470 vha->vp_idx, __func__);
4471 return -ENOMEM;
4472 }
4473 memset(mcmd, 0, sizeof(*mcmd));
4474
4475 mcmd->sess = sess;
4476 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4477 sizeof(mcmd->orig_iocb.imm_ntfy));
4478
f775bd14
QT		 4479 unpacked_lun =
4480 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4481 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4482 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4483 mcmd->qpair = ha->base_qpair;
2d70c103 4484
be92fc3f 4485 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4486 le16_to_cpu(iocb->u.isp2x.seq_id));
4487 if (rc != 0) {
4488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4489 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4490 vha->vp_idx, rc);
4491 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4492 return -EFAULT;
4493 }
4494
4495 return 0;
4496}
4497
4498/* ha->hardware_lock supposed to be held on entry */
4499static int qlt_abort_task(struct scsi_qla_host *vha,
4500 struct imm_ntfy_from_isp *iocb)
4501{
4502 struct qla_hw_data *ha = vha->hw;
5d964837 4503 struct fc_port *sess;
2d70c103 4504 int loop_id;
7560151b 4505 unsigned long flags;
2d70c103
NB		 4506
4507 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4508
7560151b 4509 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4510 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4511 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4512
2d70c103
NB		 4513 if (sess == NULL) {
4514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4515 "qla_target(%d): task abort for unexisting "
4516 "session\n", vha->vp_idx);
0e8cd71c 4517 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4518 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4519 }
4520
4521 return __qlt_abort_task(vha, iocb, sess);
4522}
4523
a6ca8878
AP		 4524void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4525{
726b8548
QT		 4526 if (rc != MBS_COMMAND_COMPLETE) {
4527 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4528 "%s: se_sess %p / sess %p from"
4529 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4530 " LOGO failed: %#x\n",
4531 __func__,
4532 fcport->se_sess,
4533 fcport,
4534 fcport->port_name, fcport->loop_id,
4535 fcport->d_id.b.domain, fcport->d_id.b.area,
4536 fcport->d_id.b.al_pa, rc);
4537 }
4538
4539 fcport->logout_completed = 1;
a6ca8878
AP		 4540}
4541
a6ca8878
AP		 4542/*
4543* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4544*
4545* Schedules sessions with matching port_id/loop_id but different wwn for
4546* deletion. Returns existing session with matching wwn if present.
4547* Null otherwise.
4548*/
726b8548
QT		 4549struct fc_port *
4550qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4551 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4552{
5d964837 4553 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4554 uint64_t other_wwn;
4555
b7bd104e
AP		 4556 *conflict_sess = NULL;
4557
5d964837 4558 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4559
4560 other_wwn = wwn_to_u64(other_sess->port_name);
4561
4562 if (wwn == other_wwn) {
4563 WARN_ON(sess);
4564 sess = other_sess;
4565 continue;
4566 }
4567
4568 /* find other sess with nport_id collision */
37cacc0a 4569 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4570 if (loop_id != other_sess->loop_id) {
726b8548 4571 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4572 "Invalidating sess %p loop_id %d wwn %llx.\n",
4573 other_sess, other_sess->loop_id, other_wwn);
4574
4575 /*
4576 * logout_on_delete is set by default, but another
4577 * session that has the same s_id/loop_id combo
4578 * might have cleared it when requested this session
4579 * deletion, so don't touch it
4580 */
4581 qlt_schedule_sess_for_deletion(other_sess, true);
4582 } else {
4583 /*
4584 * Another wwn used to have our s_id/loop_id
b7bd104e 4585 * kill the session, but don't free the loop_id
a6ca8878 4586 */
83548fe2 4587 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4588 "Invalidating sess %p loop_id %d wwn %llx.\n",
4589 other_sess, other_sess->loop_id, other_wwn);
4590
4591
b7bd104e
AP		 4592 other_sess->keep_nport_handle = 1;
4593 *conflict_sess = other_sess;
a6ca8878
AP		 4594 qlt_schedule_sess_for_deletion(other_sess,
4595 true);
4596 }
4597 continue;
4598 }
4599
4600 /* find other sess with nport handle collision */
726b8548
QT		 4601 if ((loop_id == other_sess->loop_id) &&
4602 (loop_id != FC_NO_LOOP_ID)) {
4603 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4604 "Invalidating sess %p loop_id %d wwn %llx.\n",
4605 other_sess, other_sess->loop_id, other_wwn);
4606
4607 /* Same loop_id but different s_id
4608 * Ok to kill and logout */
4609 qlt_schedule_sess_for_deletion(other_sess, true);
4610 }
4611 }
4612
4613 return sess;
4614}
4615
daddf5cf
AP		 4616/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4617static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4618{
4619 struct qla_tgt_sess_op *op;
4620 struct qla_tgt_cmd *cmd;
4621 uint32_t key;
4622 int count = 0;
8b631d87 4623 unsigned long flags;
daddf5cf
AP		 4624
4625 key = (((u32)s_id->b.domain << 16) |
4626 ((u32)s_id->b.area << 8) |
4627 ((u32)s_id->b.al_pa));
4628
8b631d87 4629 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4630 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4631 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4632
daddf5cf
AP		 4633 if (op_key == key) {
4634 op->aborted = true;
4635 count++;
4636 }
4637 }
41dc529a
QT		 4638
4639 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4640 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4641 if (op_key == key) {
4642 op->aborted = true;
4643 count++;
4644 }
4645 }
4646
daddf5cf
AP		 4647 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4648 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4649 if (cmd_key == key) {
193b50b9 4650 cmd->aborted = 1;
daddf5cf
AP		 4651 count++;
4652 }
4653 }
8b631d87 4654 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4655
4656 return count;
4657}
4658
2d70c103
NB		 4659/*
4660 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4661 */
4662static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4663 struct imm_ntfy_from_isp *iocb)
4664{
a6ca8878 4665 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4666 struct qla_hw_data *ha = vha->hw;
5d964837 4667 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4668 uint64_t wwn;
4669 port_id_t port_id;
4670 uint16_t loop_id;
4671 uint16_t wd3_lo;
2d70c103 4672 int res = 0;
5d964837 4673 struct qlt_plogi_ack_t *pla;
7560151b 4674 unsigned long flags;
2d70c103 4675
a6ca8878
AP		 4676 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4677
4678 port_id.b.domain = iocb->u.isp24.port_id[2];
4679 port_id.b.area = iocb->u.isp24.port_id[1];
4680 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4681 port_id.b.rsvd_1 = 0;
4682
4683 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4684
726b8548
QT		 4685 ql_dbg(ql_dbg_disc, vha, 0xf026,
4686 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4687 vha->vp_idx, iocb->u.isp24.port_id[2],
4688 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4689 iocb->u.isp24.status_subcode, loop_id,
4690 iocb->u.isp24.port_name);
2d70c103 4691
a6ca8878
AP		 4692 /* res = 1 means ack at the end of thread
4693 * res = 0 means ack async/later.
4694 */
2d70c103
NB		 4695 switch (iocb->u.isp24.status_subcode) {
4696 case ELS_PLOGI:
a6ca8878 4697
daddf5cf
AP		 4698 /* Mark all stale commands in qla_tgt_wq for deletion */
4699 abort_cmds_for_s_id(vha, &port_id);
4700
7560151b
QT		 4701 if (wwn) {
4702 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4703 sess = qlt_find_sess_invalidate_other(vha, wwn,
4704 port_id, loop_id, &conflict_sess);
7560151b
QT		 4705 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4706 }
a6ca8878 4707
726b8548 4708 if (IS_SW_RESV_ADDR(port_id)) {
a6ca8878
AP		 4709 res = 1;
4710 break;
4711 }
4712
b7bd104e
AP		 4713 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4714 if (!pla) {
a6ca8878 4715 qlt_send_term_imm_notif(vha, iocb, 1);
a6ca8878
AP		 4716 break;
4717 }
4718
4719 res = 0;
4720
726b8548
QT		 4721 if (conflict_sess) {
4722 conflict_sess->login_gen++;
b7bd104e 4723 qlt_plogi_ack_link(vha, pla, conflict_sess,
726b8548
QT		 4724 QLT_PLOGI_LINK_CONFLICT);
4725 }
a6ca8878 4726
726b8548
QT		 4727 if (!sess) {
4728 pla->ref_count++;
4729 qla24xx_post_newsess_work(vha, &port_id,
4730 iocb->u.isp24.port_name, pla);
4731 res = 0;
b7bd104e 4732 break;
726b8548 4733 }
b7bd104e
AP		 4734
4735 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
726b8548
QT		 4736 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4737 sess->d_id = port_id;
4738 sess->login_gen++;
4739
4740 switch (sess->disc_state) {
4741 case DSC_DELETED:
4742 qlt_plogi_ack_unref(vha, pla);
4743 break;
4744
4745 default:
4746 /*
4747 * Under normal circumstances we want to release nport handle
4748 * during LOGO process to avoid nport handle leaks inside FW.
4749 * The exception is when LOGO is done while another PLOGI with
4750 * the same nport handle is waiting as might be the case here.
4751 * Note: there is always a possibily of a race where session
4752 * deletion has already started for other reasons (e.g. ACL
4753 * removal) and now PLOGI arrives:
4754 * 1. if PLOGI arrived in FW after nport handle has been freed,
4755 * FW must have assigned this PLOGI a new/same handle and we
4756 * can proceed ACK'ing it as usual when session deletion
4757 * completes.
4758 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4759 * bit reached it, the handle has now been released. We'll
4760 * get an error when we ACK this PLOGI. Nothing will be sent
4761 * back to initiator. Initiator should eventually retry
4762 * PLOGI and situation will correct itself.
4763 */
4764 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4765 (sess->d_id.b24 == port_id.b24));
4766
83548fe2
QT		 4767 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4768 "%s %d %8phC post del sess\n",
4769 __func__, __LINE__, sess->port_name);
726b8548
QT		 4770
4771
4772 qlt_schedule_sess_for_deletion_lock(sess);
4773 break;
4774 }
4775
a6ca8878
AP		 4776 break;
4777
2d70c103 4778 case ELS_PRLI:
a6ca8878
AP		 4779 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4780
7560151b
QT		 4781 if (wwn) {
4782 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4783 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4784 loop_id, &conflict_sess);
7560151b
QT		 4785 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4786 }
b7bd104e
AP		 4787
4788 if (conflict_sess) {
4789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4790 "PRLI with conflicting sess %p port %8phC\n",
4791 conflict_sess, conflict_sess->port_name);
4792 qlt_send_term_imm_notif(vha, iocb, 1);
4793 res = 0;
4794 break;
4795 }
a6ca8878
AP		 4796
4797 if (sess != NULL) {
ec7193e2
QT		 4798 if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
4799 sess->fw_login_state != DSC_LS_PLOGI_COMP) {
a6ca8878
AP		 4800 /*
4801 * Impatient initiator sent PRLI before last
4802 * PLOGI could finish. Will force him to re-try,
4803 * while last one finishes.
4804 */
df673274 4805 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4806 "sess %p PRLI received, before plogi ack.\n",
4807 sess);
4808 qlt_send_term_imm_notif(vha, iocb, 1);
4809 res = 0;
4810 break;
4811 }
4812
4813 /*
4814 * This shouldn't happen under normal circumstances,
4815 * since we have deleted the old session during PLOGI
4816 */
df673274 4817 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4818 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4819 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4820
4821 sess->local = 0;
4822 sess->loop_id = loop_id;
37cacc0a 4823 sess->d_id = port_id;
726b8548 4824 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4825
4826 if (wd3_lo & BIT_7)
4827 sess->conf_compl_supported = 1;
4828
726b8548
QT		 4829 if ((wd3_lo & BIT_4) == 0)
4830 sess->port_type = FCT_INITIATOR;
4831 else
4832 sess->port_type = FCT_TARGET;
df673274
AP		 4833 }
4834 res = 1; /* send notify ack */
4835
4836 /* Make session global (not used in fabric mode) */
4837 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4838 if (sess) {
83548fe2 4839 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4840 "%s %d %8phC post nack\n",
4841 __func__, __LINE__, sess->port_name);
4842 qla24xx_post_nack_work(vha, sess, iocb,
4843 SRB_NACK_PRLI);
4844 res = 0;
4845 } else {
4846 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4847 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4848 qla2xxx_wake_dpc(vha);
4849 }
a6ca8878 4850 } else {
726b8548 4851 if (sess) {
83548fe2 4852 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4853 "%s %d %8phC post nack\n",
4854 __func__, __LINE__, sess->port_name);
726b8548
QT		 4855 qla24xx_post_nack_work(vha, sess, iocb,
4856 SRB_NACK_PRLI);
4857 res = 0;
4858 }
4859 }
a6ca8878
AP		 4860 break;
4861
41dc529a
QT		 4862 case ELS_TPRLO:
4863 if (le16_to_cpu(iocb->u.isp24.flags) &
4864 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4865 loop_id = 0xFFFF;
4866 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4867 res = 1;
4868 break;
4869 }
4870 /* drop through */
2d70c103
NB		 4871 case ELS_LOGO:
4872 case ELS_PRLO:
726b8548
QT		 4873 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4874 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4875 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4876
4877 if (sess) {
4878 sess->login_gen++;
4879 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4880 sess->logo_ack_needed = 1;
4881 memcpy(sess->iocb, iocb, IOCB_SIZE);
4882 }
4883
2d70c103 4884 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4885
83548fe2 4886 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4887 "%s: logo %llx res %d sess %p ",
4888 __func__, wwn, res, sess);
4889 if (res == 0) {
41dc529a
QT		 4890 /*
4891 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4892 * for LOGO_ACK & sess delete
4893 */
726b8548
QT		 4894 BUG_ON(!sess);
4895 res = 0;
4896 } else {
41dc529a 4897 /* cmd did not go to upper layer. */
726b8548
QT		 4898 if (sess) {
4899 qlt_schedule_sess_for_deletion_lock(sess);
4900 res = 0;
4901 }
4902 /* else logo will be ack */
4903 }
2d70c103
NB		 4904 break;
4905 case ELS_PDISC:
4906 case ELS_ADISC:
4907 {
0e8cd71c 4908 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4909 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 4910 qlt_send_notify_ack(ha->base_qpair,
4911 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 4912 tgt->link_reinit_iocb_pending = 0;
4913 }
726b8548
QT		 4914
4915 sess = qla2x00_find_fcport_by_wwpn(vha,
4916 iocb->u.isp24.port_name, 1);
4917 if (sess) {
83548fe2 4918 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4919 "sess %p lid %d|%d DS %d LS %d\n",
4920 sess, sess->loop_id, loop_id,
4921 sess->disc_state, sess->fw_login_state);
4922 }
4923
2d70c103
NB		 4924 res = 1; /* send notify ack */
4925 break;
4926 }
4927
a6ca8878 4928 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4929 default:
4930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4931 "qla_target(%d): Unsupported ELS command %x "
4932 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4933 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4934 break;
4935 }
4936
4937 return res;
4938}
4939
2d70c103
NB		 4940/*
4941 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4942 */
4943static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4944 struct imm_ntfy_from_isp *iocb)
4945{
4946 struct qla_hw_data *ha = vha->hw;
4947 uint32_t add_flags = 0;
4948 int send_notify_ack = 1;
4949 uint16_t status;
4950
4951 status = le16_to_cpu(iocb->u.isp2x.status);
4952 switch (status) {
4953 case IMM_NTFY_LIP_RESET:
4954 {
4955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4956 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4957 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4958 iocb->u.isp24.status_subcode);
4959
4960 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4961 send_notify_ack = 0;
4962 break;
4963 }
4964
4965 case IMM_NTFY_LIP_LINK_REINIT:
4966 {
0e8cd71c 4967 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 4968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
4969 "qla_target(%d): LINK REINIT (loop %#x, "
4970 "subcode %x)\n", vha->vp_idx,
4971 le16_to_cpu(iocb->u.isp24.nport_handle),
4972 iocb->u.isp24.status_subcode);
4973 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 4974 qlt_send_notify_ack(ha->base_qpair,
4975 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 4976 }
4977 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
4978 tgt->link_reinit_iocb_pending = 1;
4979 /*
4980 * QLogic requires to wait after LINK REINIT for possible
4981 * PDISC or ADISC ELS commands
4982 */
4983 send_notify_ack = 0;
4984 break;
4985 }
4986
4987 case IMM_NTFY_PORT_LOGOUT:
4988 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
4989 "qla_target(%d): Port logout (loop "
4990 "%#x, subcode %x)\n", vha->vp_idx,
4991 le16_to_cpu(iocb->u.isp24.nport_handle),
4992 iocb->u.isp24.status_subcode);
4993
4994 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
4995 send_notify_ack = 0;
4996 /* The sessions will be cleared in the callback, if needed */
4997 break;
4998
4999 case IMM_NTFY_GLBL_TPRLO:
5000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5001 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5002 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5003 send_notify_ack = 0;
5004 /* The sessions will be cleared in the callback, if needed */
5005 break;
5006
5007 case IMM_NTFY_PORT_CONFIG:
5008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5009 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5010 status);
5011 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5012 send_notify_ack = 0;
5013 /* The sessions will be cleared in the callback, if needed */
5014 break;
5015
5016 case IMM_NTFY_GLBL_LOGO:
5017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5018 "qla_target(%d): Link failure detected\n",
5019 vha->vp_idx);
5020 /* I_T nexus loss */
5021 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5022 send_notify_ack = 0;
5023 break;
5024
5025 case IMM_NTFY_IOCB_OVERFLOW:
5026 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5027 "qla_target(%d): Cannot provide requested "
5028 "capability (IOCB overflowed the immediate notify "
5029 "resource count)\n", vha->vp_idx);
5030 break;
5031
5032 case IMM_NTFY_ABORT_TASK:
5033 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5034 "qla_target(%d): Abort Task (S %08x I %#x -> "
5035 "L %#x)\n", vha->vp_idx,
5036 le16_to_cpu(iocb->u.isp2x.seq_id),
5037 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5038 le16_to_cpu(iocb->u.isp2x.lun));
5039 if (qlt_abort_task(vha, iocb) == 0)
5040 send_notify_ack = 0;
5041 break;
5042
5043 case IMM_NTFY_RESOURCE:
5044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5045 "qla_target(%d): Out of resources, host %ld\n",
5046 vha->vp_idx, vha->host_no);
5047 break;
5048
5049 case IMM_NTFY_MSG_RX:
5050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5051 "qla_target(%d): Immediate notify task %x\n",
5052 vha->vp_idx, iocb->u.isp2x.task_flags);
5053 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5054 send_notify_ack = 0;
5055 break;
5056
5057 case IMM_NTFY_ELS:
5058 if (qlt_24xx_handle_els(vha, iocb) == 0)
5059 send_notify_ack = 0;
5060 break;
2d70c103
NB		 5061 default:
5062 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5063 "qla_target(%d): Received unknown immediate "
5064 "notify status %x\n", vha->vp_idx, status);
5065 break;
5066 }
5067
5068 if (send_notify_ack)
82de802a
QT		 5069 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5070 0, 0);
2d70c103
NB		 5071}
5072
5073/*
5074 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5075 * This function sends busy to ISP 2xxx or 24xx.
5076 */
82de802a 5077static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5078 struct atio_from_isp *atio, uint16_t status)
5079{
82de802a 5080 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5081 struct ctio7_to_24xx *ctio24;
5082 struct qla_hw_data *ha = vha->hw;
5083 request_t *pkt;
5d964837 5084 struct fc_port *sess = NULL;
7560151b 5085 unsigned long flags;
f7e761f5 5086 u16 temp;
2d70c103 5087
7560151b 5088 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5089 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5090 atio->u.isp24.fcp_hdr.s_id);
7560151b 5091 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5092 if (!sess) {
82de802a 5093 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5094 return 0;
2d70c103
NB		 5095 }
5096 /* Sending marker isn't necessary, since we called from ISR */
5097
82de802a 5098 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5099 if (!pkt) {
667024a3 5100 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5101 "qla_target(%d): %s failed: unable to allocate "
5102 "request packet", vha->vp_idx, __func__);
33e79977 5103 return -ENOMEM;
2d70c103
NB		 5104 }
5105
ce1025cd 5106 vha->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5107 pkt->entry_count = 1;
5108 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5109
5110 ctio24 = (struct ctio7_to_24xx *)pkt;
5111 ctio24->entry_type = CTIO_TYPE7;
5112 ctio24->nport_handle = sess->loop_id;
ad950360 5113 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5114 ctio24->vp_index = vha->vp_idx;
5115 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5116 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5117 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5118 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5119 temp = (atio->u.isp24.attr << 9) |
2d70c103 5120 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5121 CTIO7_FLAGS_DONT_RET_CTIO;
5122 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5123 /*
5124 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5125 * if the explicit conformation is used.
5126 */
5127 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5128 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5129 /* Memory Barrier */
5130 wmb();
8abfa9e2
QT		 5131 if (qpair->reqq_start_iocbs)
5132 qpair->reqq_start_iocbs(qpair);
5133 else
5134 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5135 return 0;
5136}
5137
5138/*
5139 * This routine is used to allocate a command for either a QFull condition
5140 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5141 * out previously.
5142 */
5143static void
5144qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5145 struct atio_from_isp *atio, uint16_t status, int qfull)
5146{
5147 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5148 struct qla_hw_data *ha = vha->hw;
5d964837 5149 struct fc_port *sess;
33e79977
QT		 5150 struct se_session *se_sess;
5151 struct qla_tgt_cmd *cmd;
5152 int tag;
82de802a 5153 unsigned long flags;
33e79977
QT		 5154
5155 if (unlikely(tgt->tgt_stop)) {
5156 ql_dbg(ql_dbg_io, vha, 0x300a,
5157 "New command while device %p is shutting down\n", tgt);
5158 return;
5159 }
5160
5161 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5162 vha->hw->tgt.num_qfull_cmds_dropped++;
5163 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5164 vha->qla_stats.stat_max_qfull_cmds_dropped)
5165 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5166 vha->hw->tgt.num_qfull_cmds_dropped;
5167
5168 ql_dbg(ql_dbg_io, vha, 0x3068,
5169 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5170 vha->vp_idx, __func__,
5171 vha->hw->tgt.num_qfull_cmds_dropped);
5172
5173 qlt_chk_exch_leak_thresh_hold(vha);
5174 return;
5175 }
5176
5177 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5178 (vha, atio->u.isp24.fcp_hdr.s_id);
5179 if (!sess)
5180 return;
5181
5182 se_sess = sess->se_sess;
5183
5184 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5185 if (tag < 0)
5186 return;
5187
5188 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5189 if (!cmd) {
5190 ql_dbg(ql_dbg_io, vha, 0x3009,
5191 "qla_target(%d): %s: Allocation of cmd failed\n",
5192 vha->vp_idx, __func__);
5193
5194 vha->hw->tgt.num_qfull_cmds_dropped++;
5195 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5196 vha->qla_stats.stat_max_qfull_cmds_dropped)
5197 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5198 vha->hw->tgt.num_qfull_cmds_dropped;
5199
5200 qlt_chk_exch_leak_thresh_hold(vha);
5201 return;
5202 }
5203
5204 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5205
5206 qlt_incr_num_pend_cmds(vha);
5207 INIT_LIST_HEAD(&cmd->cmd_list);
5208 memcpy(&cmd->atio, atio, sizeof(*atio));
5209
5210 cmd->tgt = vha->vha_tgt.qla_tgt;
5211 cmd->vha = vha;
7c3f8fd1 5212 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5213 cmd->q_full = 1;
82de802a 5214 cmd->qpair = ha->base_qpair;
33e79977
QT		 5215
5216 if (qfull) {
5217 cmd->q_full = 1;
5218 /* NOTE: borrowing the state field to carry the status */
5219 cmd->state = status;
5220 } else
5221 cmd->term_exchg = 1;
5222
82de802a 5223 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5224 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5225
5226 vha->hw->tgt.num_qfull_cmds_alloc++;
5227 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5228 vha->qla_stats.stat_max_qfull_cmds_alloc)
5229 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5230 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5231 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5232}
5233
5234int
82de802a 5235qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5236{
82de802a 5237 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5238 struct qla_hw_data *ha = vha->hw;
5239 unsigned long flags;
5240 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5241 struct list_head free_list, q_full_list;
33e79977
QT		 5242 int rc = 0;
5243
5244 if (list_empty(&ha->tgt.q_full_list))
5245 return 0;
5246
5247 INIT_LIST_HEAD(&free_list);
82de802a 5248 INIT_LIST_HEAD(&q_full_list);
33e79977 5249
82de802a 5250 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5251 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5252 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5253 return 0;
5254 }
5255
82de802a
QT		 5256 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5257 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5258
5259 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5260 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5261 if (cmd->q_full)
5262 /* cmd->state is a borrowed field to hold status */
82de802a 5263 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5264 else if (cmd->term_exchg)
82de802a 5265 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5266
5267 if (rc == -ENOMEM)
5268 break;
5269
5270 if (cmd->q_full)
5271 ql_dbg(ql_dbg_io, vha, 0x3006,
5272 "%s: busy sent for ox_id[%04x]\n", __func__,
5273 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5274 else if (cmd->term_exchg)
5275 ql_dbg(ql_dbg_io, vha, 0x3007,
5276 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5277 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5278 else
5279 ql_dbg(ql_dbg_io, vha, 0x3008,
5280 "%s: Unexpected cmd in QFull list %p\n", __func__,
5281 cmd);
5282
5283 list_del(&cmd->cmd_list);
5284 list_add_tail(&cmd->cmd_list, &free_list);
5285
5286 /* piggy back on hardware_lock for protection */
5287 vha->hw->tgt.num_qfull_cmds_alloc--;
5288 }
82de802a 5289 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5290
5291 cmd = NULL;
5292
5293 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5294 list_del(&cmd->cmd_list);
5295 /* This cmd was never sent to TCM. There is no need
5296 * to schedule free or call free_cmd
5297 */
5298 qlt_free_cmd(cmd);
5299 }
82de802a
QT		 5300
5301 if (!list_empty(&q_full_list)) {
5302 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5303 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5304 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5305 }
5306
33e79977
QT		 5307 return rc;
5308}
5309
5310static void
82de802a
QT		 5311qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5312 uint16_t status)
33e79977
QT		 5313{
5314 int rc = 0;
82de802a 5315 struct scsi_qla_host *vha = qpair->vha;
33e79977 5316
82de802a 5317 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5318 if (rc == -ENOMEM)
5319 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5320}
5321
5322static int
82de802a
QT		 5323qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5324 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5325{
5326 struct qla_hw_data *ha = vha->hw;
5327 uint16_t status;
8b666809 5328 unsigned long flags;
33e79977
QT		 5329
5330 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5331 return 0;
5332
8b666809
QT		 5333 if (!ha_locked)
5334 spin_lock_irqsave(&ha->hardware_lock, flags);
33e79977 5335 status = temp_sam_status;
82de802a 5336 qlt_send_busy(qpair, atio, status);
8b666809
QT		 5337 if (!ha_locked)
5338 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5339
33e79977 5340 return 1;
2d70c103
NB		 5341}
5342
5343/* ha->hardware_lock supposed to be held on entry */
5344/* called via callback from qla2xxx */
5345static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5346 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5347{
5348 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5349 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5350 int rc;
2f424b9b 5351 unsigned long flags;
2d70c103
NB		 5352
5353 if (unlikely(tgt == NULL)) {
ec7193e2 5354 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5355 "ATIO pkt, but no tgt (ha %p)", ha);
5356 return;
5357 }
2d70c103
NB		 5358 /*
5359 * In tgt_stop mode we also should allow all requests to pass.
5360 * Otherwise, some commands can stuck.
5361 */
5362
2f424b9b 5363 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5364
5365 switch (atio->u.raw.entry_type) {
5366 case ATIO_TYPE7:
2d70c103
NB		 5367 if (unlikely(atio->u.isp24.exchange_addr ==
5368 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5369 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5370 "qla_target(%d): ATIO_TYPE7 "
5371 "received with UNKNOWN exchange address, "
5372 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5373 if (!ha_locked)
5374 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 5375 qlt_send_busy(ha->base_qpair, atio,
5376 SAM_STAT_TASK_SET_FULL);
2f424b9b 5377 if (!ha_locked)
82de802a
QT		 5378 spin_unlock_irqrestore(&ha->hardware_lock,
5379 flags);
2d70c103
NB		 5380 break;
5381 }
33e79977 5382
33e79977 5383 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5384 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5385 atio, ha_locked);
33e79977 5386 if (rc != 0) {
2f424b9b 5387 tgt->atio_irq_cmd_count--;
33e79977
QT		 5388 return;
5389 }
2d70c103 5390 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5391 } else {
2d70c103 5392 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5393 }
2d70c103
NB		 5394 if (unlikely(rc != 0)) {
5395 if (rc == -ESRCH) {
2f424b9b 5396 if (!ha_locked)
82de802a
QT		 5397 spin_lock_irqsave(&ha->hardware_lock,
5398 flags);
2f424b9b 5399
2d70c103 5400#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
82de802a
QT		 5401 qlt_send_busy(ha->base_qpair, atio,
5402 SAM_STAT_BUSY);
2d70c103 5403#else
82de802a
QT		 5404 qlt_send_term_exchange(ha->base_qpair, NULL,
5405 atio, 1, 0);
2d70c103 5406#endif
2f424b9b 5407 if (!ha_locked)
82de802a
QT		 5408 spin_unlock_irqrestore(
5409 &ha->hardware_lock, flags);
2d70c103
NB		 5410 } else {
5411 if (tgt->tgt_stop) {
5412 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5413 "qla_target: Unable to send "
5414 "command to target for req, "
5415 "ignoring.\n");
5416 } else {
5417 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5418 "qla_target(%d): Unable to send "
5419 "command to target, sending BUSY "
5420 "status.\n", vha->vp_idx);
2f424b9b
QT		 5421 if (!ha_locked)
5422 spin_lock_irqsave(
5423 &ha->hardware_lock, flags);
82de802a
QT		 5424 qlt_send_busy(ha->base_qpair,
5425 atio, SAM_STAT_BUSY);
2f424b9b
QT		 5426 if (!ha_locked)
5427 spin_unlock_irqrestore(
5428 &ha->hardware_lock, flags);
2d70c103
NB		 5429 }
5430 }
5431 }
5432 break;
5433
5434 case IMMED_NOTIFY_TYPE:
5435 {
5436 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5437 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5438 "qla_target(%d): Received ATIO packet %x "
5439 "with error status %x\n", vha->vp_idx,
5440 atio->u.raw.entry_type,
5441 atio->u.isp2x.entry_status);
5442 break;
5443 }
5444 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5445
5446 if (!ha_locked)
5447 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5448 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5449 if (!ha_locked)
5450 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5451 break;
5452 }
5453
5454 default:
5455 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5456 "qla_target(%d): Received unknown ATIO atio "
5457 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5458 break;
5459 }
5460
2f424b9b 5461 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5462}
5463
5464/* ha->hardware_lock supposed to be held on entry */
5465/* called via callback from qla2xxx */
82de802a
QT		 5466static void qlt_response_pkt(struct scsi_qla_host *vha,
5467 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 5468{
5469 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5470 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5471
5472 if (unlikely(tgt == NULL)) {
5473 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
5474 "qla_target(%d): Response pkt %x received, but no "
5475 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
5476 return;
5477 }
5478
2d70c103
NB		 5479 /*
5480 * In tgt_stop mode we also should allow all requests to pass.
5481 * Otherwise, some commands can stuck.
5482 */
5483
2d70c103 5484 switch (pkt->entry_type) {
f83adb61 5485 case CTIO_CRC2:
2d70c103
NB		 5486 case CTIO_TYPE7:
5487 {
5488 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
82de802a 5489 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5490 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5491 entry);
5492 break;
5493 }
5494
5495 case ACCEPT_TGT_IO_TYPE:
5496 {
5497 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5498 int rc;
2d70c103 5499 if (atio->u.isp2x.status !=
ad950360 5500 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5501 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5502 "qla_target(%d): ATIO with error "
5503 "status %x received\n", vha->vp_idx,
5504 le16_to_cpu(atio->u.isp2x.status));
5505 break;
5506 }
2d70c103 5507
82de802a 5508 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5509 if (rc != 0)
33e79977 5510 return;
33e79977 5511
2d70c103
NB		 5512 rc = qlt_handle_cmd_for_atio(vha, atio);
5513 if (unlikely(rc != 0)) {
5514 if (rc == -ESRCH) {
5515#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
82de802a 5516 qlt_send_busy(rsp->qpair, atio, 0);
2d70c103 5517#else
82de802a 5518 qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0);
2d70c103
NB		 5519#endif
5520 } else {
5521 if (tgt->tgt_stop) {
5522 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5523 "qla_target: Unable to send "
5524 "command to target, sending TERM "
5525 "EXCHANGE for rsp\n");
82de802a 5526 qlt_send_term_exchange(rsp->qpair, NULL,
a07100e0 5527 atio, 1, 0);
2d70c103
NB		 5528 } else {
5529 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5530 "qla_target(%d): Unable to send "
5531 "command to target, sending BUSY "
5532 "status\n", vha->vp_idx);
82de802a 5533 qlt_send_busy(rsp->qpair, atio, 0);
2d70c103
NB		 5534 }
5535 }
5536 }
5537 }
5538 break;
5539
5540 case CONTINUE_TGT_IO_TYPE:
5541 {
5542 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5543 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5544 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5545 entry);
5546 break;
5547 }
5548
5549 case CTIO_A64_TYPE:
5550 {
5551 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5552 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5553 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5554 entry);
5555 break;
5556 }
5557
5558 case IMMED_NOTIFY_TYPE:
5559 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5560 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5561 break;
5562
5563 case NOTIFY_ACK_TYPE:
5564 if (tgt->notify_ack_expected > 0) {
5565 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5566 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5567 "NOTIFY_ACK seq %08x status %x\n",
5568 le16_to_cpu(entry->u.isp2x.seq_id),
5569 le16_to_cpu(entry->u.isp2x.status));
5570 tgt->notify_ack_expected--;
5571 if (entry->u.isp2x.status !=
ad950360 5572 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5573 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5574 "qla_target(%d): NOTIFY_ACK "
5575 "failed %x\n", vha->vp_idx,
5576 le16_to_cpu(entry->u.isp2x.status));
5577 }
5578 } else {
5579 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5580 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5581 vha->vp_idx);
5582 }
5583 break;
5584
5585 case ABTS_RECV_24XX:
5586 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5587 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5588 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5589 break;
5590
5591 case ABTS_RESP_24XX:
5592 if (tgt->abts_resp_expected > 0) {
5593 struct abts_resp_from_24xx_fw *entry =
5594 (struct abts_resp_from_24xx_fw *)pkt;
5595 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5596 "ABTS_RESP_24XX: compl_status %x\n",
5597 entry->compl_status);
5598 tgt->abts_resp_expected--;
5599 if (le16_to_cpu(entry->compl_status) !=
5600 ABTS_RESP_COMPL_SUCCESS) {
5601 if ((entry->error_subcode1 == 0x1E) &&
5602 (entry->error_subcode2 == 0)) {
5603 /*
5604 * We've got a race here: aborted
5605 * exchange not terminated, i.e.
5606 * response for the aborted command was
5607 * sent between the abort request was
5608 * received and processed.
5609 * Unfortunately, the firmware has a
5610 * silly requirement that all aborted
5611 * exchanges must be explicitely
5612 * terminated, otherwise it refuses to
5613 * send responses for the abort
5614 * requests. So, we have to
5615 * (re)terminate the exchange and retry
5616 * the abort response.
5617 */
5618 qlt_24xx_retry_term_exchange(vha,
5619 entry);
5620 } else
5621 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5622 "qla_target(%d): ABTS_RESP_24XX "
5623 "failed %x (subcode %x:%x)",
5624 vha->vp_idx, entry->compl_status,
5625 entry->error_subcode1,
5626 entry->error_subcode2);
5627 }
5628 } else {
5629 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5630 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5631 "received\n", vha->vp_idx);
5632 }
5633 break;
5634
5635 default:
5636 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5637 "qla_target(%d): Received unknown response pkt "
5638 "type %x\n", vha->vp_idx, pkt->entry_type);
5639 break;
5640 }
5641
2d70c103
NB		 5642}
5643
5644/*
5645 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5646 */
5647void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5648 uint16_t *mailbox)
5649{
5650 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5651 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5652 int login_code;
2d70c103 5653
3a33dc95 5654 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5655 return;
5656
2d70c103
NB		 5657 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5658 IS_QLA2100(ha))
5659 return;
5660 /*
5661 * In tgt_stop mode we also should allow all requests to pass.
5662 * Otherwise, some commands can stuck.
5663 */
5664
2d70c103
NB		 5665
5666 switch (code) {
5667 case MBA_RESET: /* Reset */
5668 case MBA_SYSTEM_ERR: /* System Error */
5669 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5670 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5671 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5672 "qla_target(%d): System error async event %#x "
6efb3c0a 5673 "occurred", vha->vp_idx, code);
2d70c103
NB		 5674 break;
5675 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5676 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5677 break;
5678
5679 case MBA_LOOP_UP:
5680 {
5681 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5682 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5683 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5684 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5685 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5686 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5687 qlt_send_notify_ack(ha->base_qpair,
5688 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5689 0, 0, 0, 0, 0, 0);
5690 tgt->link_reinit_iocb_pending = 0;
5691 }
5692 break;
5693 }
5694
5695 case MBA_LIP_OCCURRED:
5696 case MBA_LOOP_DOWN:
5697 case MBA_LIP_RESET:
5698 case MBA_RSCN_UPDATE:
5699 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5700 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5701 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5702 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5703 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5704 break;
5705
ead03855 5706 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5707 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5708 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5709 vha->vp_idx,
5710 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5711 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5712
5713 if (le16_to_cpu(mailbox[3]) == 1) {
5714 /* exchange starvation. */
5715 vha->hw->exch_starvation++;
5716 if (vha->hw->exch_starvation > 5) {
83548fe2 5717 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5718 "Exchange starvation-. Resetting RISC\n");
5719
5720 vha->hw->exch_starvation = 0;
5721 if (IS_P3P_TYPE(vha->hw))
5722 set_bit(FCOE_CTX_RESET_NEEDED,
5723 &vha->dpc_flags);
5724 else
5725 set_bit(ISP_ABORT_NEEDED,
5726 &vha->dpc_flags);
5727 qla2xxx_wake_dpc(vha);
5728 }
5729 }
5730 break;
5731
2d70c103
NB		 5732 case MBA_PORT_UPDATE:
5733 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5734 "qla_target(%d): Port update async event %#x "
6efb3c0a 5735 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5736 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5737 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5738 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5739
5740 login_code = le16_to_cpu(mailbox[2]);
ead03855 5741 if (login_code == 0x4) {
2d70c103
NB		 5742 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5743 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5744 vha->hw->exch_starvation = 0;
5745 } else if (login_code == 0x7)
2d70c103
NB		 5746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5747 "Async MB 2: Port Logged Out\n");
5748 break;
2d70c103 5749 default:
2d70c103
NB		 5750 break;
5751 }
5752
2d70c103
NB		 5753}
5754
5755static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5756 uint16_t loop_id)
5757{
726b8548 5758 fc_port_t *fcport, *tfcp, *del;
2d70c103 5759 int rc;
726b8548
QT		 5760 unsigned long flags;
5761 u8 newfcport = 0;
2d70c103
NB		 5762
5763 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
5764 if (!fcport) {
5765 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5766 "qla_target(%d): Allocation of tmp FC port failed",
5767 vha->vp_idx);
5768 return NULL;
5769 }
5770
2d70c103
NB		 5771 fcport->loop_id = loop_id;
5772
15f30a57 5773 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5774 if (rc != QLA_SUCCESS) {
5775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5776 "qla_target(%d): Failed to retrieve fcport "
5777 "information -- get_port_database() returned %x "
5778 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5779 kfree(fcport);
5780 return NULL;
5781 }
5782
726b8548
QT		 5783 del = NULL;
5784 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5785 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5786
5787 if (tfcp) {
5788 tfcp->d_id = fcport->d_id;
5789 tfcp->port_type = fcport->port_type;
5790 tfcp->supported_classes = fcport->supported_classes;
5791 tfcp->flags |= fcport->flags;
5792
5793 del = fcport;
5794 fcport = tfcp;
5795 } else {
5796 if (vha->hw->current_topology == ISP_CFG_F)
5797 fcport->flags |= FCF_FABRIC_DEVICE;
5798
5799 list_add_tail(&fcport->list, &vha->vp_fcports);
5800 if (!IS_SW_RESV_ADDR(fcport->d_id))
5801 vha->fcport_count++;
5802 fcport->login_gen++;
5803 fcport->disc_state = DSC_LOGIN_COMPLETE;
5804 fcport->login_succ = 1;
5805 newfcport = 1;
5806 }
5807
5808 fcport->deleted = 0;
5809 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5810
5811 switch (vha->host->active_mode) {
5812 case MODE_INITIATOR:
5813 case MODE_DUAL:
5814 if (newfcport) {
5815 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5816 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5817 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5818 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5819 qla24xx_post_upd_fcport_work(vha, fcport);
5820 } else {
83548fe2 5821 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5822 "%s %d %8phC post gpsc fcp_cnt %d\n",
5823 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5824 qla24xx_post_gpsc_work(vha, fcport);
5825 }
5826 }
5827 break;
5828
5829 case MODE_TARGET:
5830 default:
5831 break;
5832 }
5833 if (del)
5834 qla2x00_free_fcport(del);
5835
2d70c103
NB		 5836 return fcport;
5837}
5838
5839/* Must be called under tgt_mutex */
5d964837 5840static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5841 uint8_t *s_id)
5842{
5d964837 5843 struct fc_port *sess = NULL;
2d70c103
NB		 5844 fc_port_t *fcport = NULL;
5845 int rc, global_resets;
5846 uint16_t loop_id = 0;
5847
726b8548
QT		 5848 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5849 /*
5850 * This is Domain Controller, so it should be
5851 * OK to drop SCSI commands from it.
5852 */
5853 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5854 "Unable to find initiator with S_ID %x:%x:%x",
5855 s_id[0], s_id[1], s_id[2]);
5856 return NULL;
5857 }
5858
71cdc079
AP		 5859 mutex_lock(&vha->vha_tgt.tgt_mutex);
5860
2d70c103 5861retry:
0e8cd71c
SK		 5862 global_resets =
5863 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5864
5865 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5866 if (rc != 0) {
71cdc079
AP		 5867 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5868
726b8548
QT		 5869 ql_log(ql_log_info, vha, 0xf071,
5870 "qla_target(%d): Unable to find "
5871 "initiator with S_ID %x:%x:%x",
5872 vha->vp_idx, s_id[0], s_id[1],
5873 s_id[2]);
71cdc079
AP		 5874
5875 if (rc == -ENOENT) {
5876 qlt_port_logo_t logo;
5877 sid_to_portid(s_id, &logo.id);
5878 logo.cmd_count = 1;
5879 qlt_send_first_logo(vha, &logo);
5880 }
5881
2d70c103
NB		 5882 return NULL;
5883 }
5884
5885 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5886 if (!fcport) {
5887 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5888 return NULL;
71cdc079 5889 }
2d70c103
NB		 5890
5891 if (global_resets !=
0e8cd71c 5892 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5893 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5894 "qla_target(%d): global reset during session discovery "
5895 "(counter was %d, new %d), retrying", vha->vp_idx,
5896 global_resets,
0e8cd71c
SK		 5897 atomic_read(&vha->vha_tgt.
5898 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5899 goto retry;
5900 }
5901
5902 sess = qlt_create_sess(vha, fcport, true);
5903
71cdc079
AP		 5904 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5905
2d70c103
NB		 5906 return sess;
5907}
5908
5909static void qlt_abort_work(struct qla_tgt *tgt,
5910 struct qla_tgt_sess_work_param *prm)
5911{
5912 struct scsi_qla_host *vha = tgt->vha;
5913 struct qla_hw_data *ha = vha->hw;
5d964837 5914 struct fc_port *sess = NULL;
7560151b 5915 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5916 uint32_t be_s_id;
5917 uint8_t s_id[3];
5918 int rc;
5919
7560151b 5920 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5921
5922 if (tgt->tgt_stop)
7560151b 5923 goto out_term2;
2d70c103
NB		 5924
5925 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5926 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5927 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5928
5929 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5930 (unsigned char *)&be_s_id);
5931 if (!sess) {
7560151b 5932 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5933
2d70c103
NB		 5934 sess = qlt_make_local_sess(vha, s_id);
5935 /* sess has got an extra creation ref */
2d70c103 5936
7560151b 5937 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5938 if (!sess)
7560151b 5939 goto out_term2;
2d70c103 5940 } else {
726b8548 5941 if (sess->deleted) {
e52a8b45 5942 sess = NULL;
7560151b 5943 goto out_term2;
e52a8b45
AP		 5944 }
5945
726b8548 5946 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5947 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 5948 "%s: kref_get fail %8phC \n",
5949 __func__, sess->port_name);
5950 sess = NULL;
5951 goto out_term2;
5952 }
2d70c103
NB		 5953 }
5954
2d70c103 5955 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 5956 ha->tgt.tgt_ops->put_sess(sess);
5957 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5958
2d70c103
NB		 5959 if (rc != 0)
5960 goto out_term;
2d70c103
NB		 5961 return;
5962
7560151b 5963out_term2:
f159b3c7
QT		 5964 if (sess)
5965 ha->tgt.tgt_ops->put_sess(sess);
5966 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 5967
2d70c103 5968out_term:
f159b3c7 5969 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 5970 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
5971 FCP_TMF_REJECTED, false);
7560151b 5972 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5973}
5974
5975static void qlt_tmr_work(struct qla_tgt *tgt,
5976 struct qla_tgt_sess_work_param *prm)
5977{
5978 struct atio_from_isp *a = &prm->tm_iocb2;
5979 struct scsi_qla_host *vha = tgt->vha;
5980 struct qla_hw_data *ha = vha->hw;
5d964837 5981 struct fc_port *sess = NULL;
2d70c103
NB		 5982 unsigned long flags;
5983 uint8_t *s_id = NULL; /* to hide compiler warnings */
5984 int rc;
f775bd14 5985 u64 unpacked_lun;
52c82823 5986 int fn;
2d70c103
NB		 5987 void *iocb;
5988
7560151b 5989 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5990
5991 if (tgt->tgt_stop)
f159b3c7 5992 goto out_term2;
2d70c103
NB		 5993
5994 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
5995 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
5996 if (!sess) {
7560151b 5997 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5998
2d70c103
NB		 5999 sess = qlt_make_local_sess(vha, s_id);
6000 /* sess has got an extra creation ref */
2d70c103 6001
7560151b 6002 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6003 if (!sess)
f159b3c7 6004 goto out_term2;
2d70c103 6005 } else {
726b8548 6006 if (sess->deleted) {
e52a8b45 6007 sess = NULL;
f159b3c7 6008 goto out_term2;
e52a8b45
AP		 6009 }
6010
726b8548 6011 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6012 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6013 "%s: kref_get fail %8phC\n",
6014 __func__, sess->port_name);
6015 sess = NULL;
f159b3c7 6016 goto out_term2;
726b8548 6017 }
2d70c103
NB		 6018 }
6019
6020 iocb = a;
2d70c103 6021 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6022 unpacked_lun =
6023 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6024
6025 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 6026 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6027 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 6028
6029 if (rc != 0)
6030 goto out_term;
2d70c103
NB		 6031 return;
6032
f159b3c7
QT		 6033out_term2:
6034 if (sess)
6035 ha->tgt.tgt_ops->put_sess(sess);
6036 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6037out_term:
82de802a 6038 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6039}
6040
6041static void qlt_sess_work_fn(struct work_struct *work)
6042{
6043 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6044 struct scsi_qla_host *vha = tgt->vha;
6045 unsigned long flags;
6046
6047 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6048
6049 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6050 while (!list_empty(&tgt->sess_works_list)) {
6051 struct qla_tgt_sess_work_param *prm = list_entry(
6052 tgt->sess_works_list.next, typeof(*prm),
6053 sess_works_list_entry);
6054
6055 /*
6056 * This work can be scheduled on several CPUs at time, so we
6057 * must delete the entry to eliminate double processing
6058 */
6059 list_del(&prm->sess_works_list_entry);
6060
6061 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6062
6063 switch (prm->type) {
6064 case QLA_TGT_SESS_WORK_ABORT:
6065 qlt_abort_work(tgt, prm);
6066 break;
6067 case QLA_TGT_SESS_WORK_TM:
6068 qlt_tmr_work(tgt, prm);
6069 break;
6070 default:
6071 BUG_ON(1);
6072 break;
6073 }
6074
6075 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6076
6077 kfree(prm);
6078 }
6079 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6080}
6081
6082/* Must be called under tgt_host_action_mutex */
6083int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6084{
6085 struct qla_tgt *tgt;
e326d22a
QT		 6086 int rc, i;
6087 struct qla_qpair_hint *h;
2d70c103
NB		 6088
6089 if (!QLA_TGT_MODE_ENABLED())
6090 return 0;
6091
33c36c0a
AE		 6092 if (!IS_TGT_MODE_CAPABLE(ha)) {
6093 ql_log(ql_log_warn, base_vha, 0xe070,
6094 "This adapter does not support target mode.\n");
6095 return 0;
6096 }
6097
2d70c103 6098 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6099 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6100
0e8cd71c 6101 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6102
6103 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6104 if (!tgt) {
6105 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6106 "Unable to allocate struct qla_tgt\n");
6107 return -ENOMEM;
6108 }
6109
e326d22a
QT		 6110 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6111 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6112 if (!tgt->qphints) {
6113 kfree(tgt);
6114 ql_log(ql_log_warn, base_vha, 0x0197,
6115 "Unable to allocate qpair hints.\n");
6116 return -ENOMEM;
6117 }
6118
2d70c103
NB		 6119 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6120 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6121
e326d22a
QT		 6122 rc = btree_init64(&tgt->lun_qpair_map);
6123 if (rc) {
6124 kfree(tgt->qphints);
6125 kfree(tgt);
6126 ql_log(ql_log_info, base_vha, 0x0198,
6127 "Unable to initialize lun_qpair_map btree\n");
6128 return -EIO;
6129 }
6130 h = &tgt->qphints[0];
6131 h->qpair = ha->base_qpair;
6132 INIT_LIST_HEAD(&h->hint_elem);
6133 h->cpuid = ha->base_qpair->cpuid;
6134 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6135
6136 for (i = 0; i < ha->max_qpairs; i++) {
6137 unsigned long flags;
6138
6139 struct qla_qpair *qpair = ha->queue_pair_map[i];
6140 h = &tgt->qphints[i + 1];
6141 INIT_LIST_HEAD(&h->hint_elem);
6142 if (qpair) {
6143 h->qpair = qpair;
6144 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6145 list_add_tail(&h->hint_elem, &qpair->hints_list);
6146 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6147 h->cpuid = qpair->cpuid;
6148 }
6149 }
6150
2d70c103
NB		 6151 tgt->ha = ha;
6152 tgt->vha = base_vha;
6153 init_waitqueue_head(&tgt->waitQ);
2d70c103 6154 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6155 spin_lock_init(&tgt->sess_work_lock);
6156 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6157 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6158 atomic_set(&tgt->tgt_global_resets_count, 0);
6159
0e8cd71c 6160 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6161
6162 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6163 "qla_target(%d): using 64 Bit PCI addressing",
6164 base_vha->vp_idx);
2d70c103
NB		 6165 /* 3 is reserved */
6166 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6167
6168 mutex_lock(&qla_tgt_mutex);
6169 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6170 mutex_unlock(&qla_tgt_mutex);
6171
f1443eeb
QT		 6172 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6173 ha->tgt.tgt_ops->add_target(base_vha);
6174
2d70c103
NB		 6175 return 0;
6176}
6177
6178/* Must be called under tgt_host_action_mutex */
6179int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6180{
0e8cd71c 6181 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6182 return 0;
6183
ddb95145
NB		 6184 if (vha->fc_vport) {
6185 qlt_release(vha->vha_tgt.qla_tgt);
6186 return 0;
6187 }
33e79977
QT		 6188
6189 /* free left over qfull cmds */
6190 qlt_init_term_exchange(vha);
6191
2d70c103 6192 mutex_lock(&qla_tgt_mutex);
0e8cd71c 6193 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
2d70c103
NB		 6194 mutex_unlock(&qla_tgt_mutex);
6195
6196 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6197 vha->host_no, ha);
0e8cd71c 6198 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6199
6200 return 0;
6201}
6202
482c9dc7
QT		 6203void qlt_remove_target_resources(struct qla_hw_data *ha)
6204{
6205 struct scsi_qla_host *node;
6206 u32 key = 0;
6207
6208 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6209 btree_remove32(&ha->tgt.host_map, key);
6210
6211 btree_destroy32(&ha->tgt.host_map);
6212}
6213
2d70c103
NB		 6214static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6215 unsigned char *b)
6216{
6217 int i;
6218
6219 pr_debug("qla2xxx HW vha->node_name: ");
6220 for (i = 0; i < WWN_SIZE; i++)
6221 pr_debug("%02x ", vha->node_name[i]);
6222 pr_debug("\n");
6223 pr_debug("qla2xxx HW vha->port_name: ");
6224 for (i = 0; i < WWN_SIZE; i++)
6225 pr_debug("%02x ", vha->port_name[i]);
6226 pr_debug("\n");
6227
6228 pr_debug("qla2xxx passed configfs WWPN: ");
6229 put_unaligned_be64(wwpn, b);
6230 for (i = 0; i < WWN_SIZE; i++)
6231 pr_debug("%02x ", b[i]);
6232 pr_debug("\n");
6233}
6234
6235/**
6236 * qla_tgt_lport_register - register lport with external module
6237 *
6238 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6239 * @wwpn: Passwd FC target WWPN
6240 * @callback: lport initialization callback for tcm_qla2xxx code
6241 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6242 */
49a47f2c
NB		 6243int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6244 u64 npiv_wwpn, u64 npiv_wwnn,
6245 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6246{
6247 struct qla_tgt *tgt;
6248 struct scsi_qla_host *vha;
6249 struct qla_hw_data *ha;
6250 struct Scsi_Host *host;
6251 unsigned long flags;
6252 int rc;
6253 u8 b[WWN_SIZE];
6254
6255 mutex_lock(&qla_tgt_mutex);
6256 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6257 vha = tgt->vha;
6258 ha = vha->hw;
6259
6260 host = vha->host;
6261 if (!host)
6262 continue;
6263
2d70c103
NB		 6264 if (!(host->hostt->supported_mode & MODE_TARGET))
6265 continue;
6266
6267 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6268 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6269 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6270 host->host_no);
6271 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6272 continue;
6273 }
ddb95145
NB		 6274 if (tgt->tgt_stop) {
6275 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6276 host->host_no);
6277 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6278 continue;
6279 }
2d70c103
NB		 6280 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6281
6282 if (!scsi_host_get(host)) {
6283 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6284 "Unable to scsi_host_get() for"
6285 " qla2xxx scsi_host\n");
6286 continue;
6287 }
49a47f2c 6288 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6289
6290 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6291 scsi_host_put(host);
6292 continue;
6293 }
49a47f2c
NB		 6294 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6295 if (rc != 0)
6296 scsi_host_put(host);
6297
ddb95145 6298 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6299 return rc;
6300 }
6301 mutex_unlock(&qla_tgt_mutex);
6302
6303 return -ENODEV;
6304}
6305EXPORT_SYMBOL(qlt_lport_register);
6306
6307/**
6308 * qla_tgt_lport_deregister - Degister lport
6309 *
6310 * @vha: Registered scsi_qla_host pointer
6311 */
6312void qlt_lport_deregister(struct scsi_qla_host *vha)
6313{
6314 struct qla_hw_data *ha = vha->hw;
6315 struct Scsi_Host *sh = vha->host;
6316 /*
6317 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6318 */
0e8cd71c 6319 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6320 ha->tgt.tgt_ops = NULL;
6321 /*
6322 * Release the Scsi_Host reference for the underlying qla2xxx host
6323 */
6324 scsi_host_put(sh);
6325}
6326EXPORT_SYMBOL(qlt_lport_deregister);
6327
6328/* Must be called under HW lock */
55a9066f 6329static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6330{
2d70c103
NB		 6331 switch (ql2x_ini_mode) {
6332 case QLA2XXX_INI_MODE_DISABLED:
6333 case QLA2XXX_INI_MODE_EXCLUSIVE:
6334 vha->host->active_mode = MODE_TARGET;
6335 break;
6336 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6337 vha->host->active_mode = MODE_UNKNOWN;
6338 break;
6339 case QLA2XXX_INI_MODE_DUAL:
6340 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6341 break;
6342 default:
6343 break;
6344 }
2d70c103
NB		 6345}
6346
6347/* Must be called under HW lock */
55a9066f 6348static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6349{
2d70c103
NB		 6350 switch (ql2x_ini_mode) {
6351 case QLA2XXX_INI_MODE_DISABLED:
6352 vha->host->active_mode = MODE_UNKNOWN;
6353 break;
6354 case QLA2XXX_INI_MODE_EXCLUSIVE:
6355 vha->host->active_mode = MODE_INITIATOR;
6356 break;
6357 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6358 case QLA2XXX_INI_MODE_DUAL:
6359 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6360 break;
6361 default:
6362 break;
6363 }
2d70c103
NB		 6364}
6365
6366/*
6367 * qla_tgt_enable_vha - NO LOCK HELD
6368 *
6369 * host_reset, bring up w/ Target Mode Enabled
6370 */
6371void
6372qlt_enable_vha(struct scsi_qla_host *vha)
6373{
6374 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6375 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6376 unsigned long flags;
0e8cd71c 6377 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6378
6379 if (!tgt) {
6380 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6381 "Unable to locate qla_tgt pointer from"
6382 " struct qla_hw_data\n");
6383 dump_stack();
6384 return;
6385 }
6386
6387 spin_lock_irqsave(&ha->hardware_lock, flags);
6388 tgt->tgt_stopped = 0;
6389 qlt_set_mode(vha);
6390 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6391
0e8cd71c
SK		 6392 if (vha->vp_idx) {
6393 qla24xx_disable_vp(vha);
6394 qla24xx_enable_vp(vha);
6395 } else {
6396 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6397 qla2xxx_wake_dpc(base_vha);
6398 qla2x00_wait_for_hba_online(base_vha);
6399 }
2d70c103
NB		 6400}
6401EXPORT_SYMBOL(qlt_enable_vha);
6402
6403/*
6404 * qla_tgt_disable_vha - NO LOCK HELD
6405 *
6406 * Disable Target Mode and reset the adapter
6407 */
55a9066f 6408static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6409{
6410 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6411 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6412 unsigned long flags;
6413
6414 if (!tgt) {
6415 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6416 "Unable to locate qla_tgt pointer from"
6417 " struct qla_hw_data\n");
6418 dump_stack();
6419 return;
6420 }
6421
6422 spin_lock_irqsave(&ha->hardware_lock, flags);
6423 qlt_clear_mode(vha);
6424 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6425
6426 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6427 qla2xxx_wake_dpc(vha);
6428 qla2x00_wait_for_hba_online(vha);
6429}
6430
6431/*
6432 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6433 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6434 * members.
6435 */
6436void
6437qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6438{
0e8cd71c
SK		 6439 vha->vha_tgt.qla_tgt = NULL;
6440
6441 mutex_init(&vha->vha_tgt.tgt_mutex);
6442 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6443
6444 qlt_clear_mode(vha);
6445
6446 /*
6447 * NOTE: Currently the value is kept the same for <24xx and
6448 * >=24xx ISPs. If it is necessary to change it,
6449 * the check should be added for specific ISPs,
6450 * assigning the value appropriately.
6451 */
6452 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6453
6454 qlt_add_target(ha, vha);
2d70c103
NB		 6455}
6456
6457void
6458qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6459{
6460 /*
6461 * FC-4 Feature bit 0 indicates target functionality to the name server.
6462 */
6463 if (qla_tgt_mode_enabled(vha)) {
726b8548 6464 ct_req->req.rff_id.fc4_feature = BIT_0;
2d70c103
NB		 6465 } else if (qla_ini_mode_enabled(vha)) {
6466 ct_req->req.rff_id.fc4_feature = BIT_1;
726b8548
QT		 6467 } else if (qla_dual_mode_enabled(vha))
6468 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
2d70c103
NB		 6469}
6470
6471/*
6472 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6473 * @ha: HA context
6474 *
6475 * Beginning of ATIO ring has initialization control block already built
6476 * by nvram config routine.
6477 *
6478 * Returns 0 on success.
6479 */
6480void
6481qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6482{
6483 struct qla_hw_data *ha = vha->hw;
6484 uint16_t cnt;
6485 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6486
ead03855 6487 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6488 return;
6489
6490 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6491 pkt->u.raw.signature = ATIO_PROCESSED;
6492 pkt++;
6493 }
6494
6495}
6496
6497/*
6498 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6499 * @ha: SCSI driver HA context
6500 */
6501void
2f424b9b 6502qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6503{
6504 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6505 struct atio_from_isp *pkt;
6506 int cnt, i;
6507
ec7193e2 6508 if (!ha->flags.fw_started)
2d70c103
NB		 6509 return;
6510
5f35509d
QT		 6511 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6512 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6513 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6514 cnt = pkt->u.raw.entry_count;
6515
5f35509d
QT		 6516 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6517 /*
6518 * This packet is corrupted. The header + payload
6519 * can not be trusted. There is no point in passing
6520 * it further up.
6521 */
83548fe2 6522 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6523 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6524 pkt->u.isp24.fcp_hdr.s_id,
6525 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6526 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6527
6528 adjust_corrupted_atio(pkt);
82de802a
QT		 6529 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6530 ha_locked, 0);
5f35509d
QT		 6531 } else {
6532 qlt_24xx_atio_pkt_all_vps(vha,
6533 (struct atio_from_isp *)pkt, ha_locked);
6534 }
2d70c103
NB		 6535
6536 for (i = 0; i < cnt; i++) {
6537 ha->tgt.atio_ring_index++;
6538 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6539 ha->tgt.atio_ring_index = 0;
6540 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6541 } else
6542 ha->tgt.atio_ring_ptr++;
6543
6544 pkt->u.raw.signature = ATIO_PROCESSED;
6545 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6546 }
6547 wmb();
6548 }
6549
6550 /* Adjust ring index */
aa230bc5 6551 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
3761f3e8 6552 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha));
2d70c103
NB		 6553}
6554
6555void
aa230bc5 6556qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6557{
6558 struct qla_hw_data *ha = vha->hw;
aa230bc5
AE		 6559 if (!QLA_TGT_MODE_ENABLED())
6560 return;
2d70c103 6561
aa230bc5
AE		 6562 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6563 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6564 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6565
6566 if (IS_ATIO_MSIX_CAPABLE(ha)) {
6567 struct qla_msix_entry *msix = &ha->msix_entries[2];
6568 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6569
6570 icb->msix_atio = cpu_to_le16(msix->entry);
6571 ql_dbg(ql_dbg_init, vha, 0xf072,
6572 "Registering ICB vector 0x%x for atio que.\n",
6573 msix->entry);
2d70c103
NB		 6574 }
6575}
6576
6577void
6578qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6579{
6580 struct qla_hw_data *ha = vha->hw;
99e1b683
QT		 6581
6582 if (!QLA_TGT_MODE_ENABLED())
6583 return;
2d70c103 6584
ead03855 6585 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6586 if (!ha->tgt.saved_set) {
6587 /* We save only once */
6588 ha->tgt.saved_exchange_count = nv->exchange_count;
6589 ha->tgt.saved_firmware_options_1 =
6590 nv->firmware_options_1;
6591 ha->tgt.saved_firmware_options_2 =
6592 nv->firmware_options_2;
6593 ha->tgt.saved_firmware_options_3 =
6594 nv->firmware_options_3;
6595 ha->tgt.saved_set = 1;
6596 }
6597
99e1b683 6598 if (qla_tgt_mode_enabled(vha))
ead03855 6599 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6600 else /* dual */
6601 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6602
6603 /* Enable target mode */
ad950360 6604 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6605
6606 /* Disable ini mode, if requested */
726b8548 6607 if (qla_tgt_mode_enabled(vha))
ad950360 6608 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6609
6610 /* Disable Full Login after LIP */
ad950360 6611 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6612 /* Enable initial LIP */
ad950360 6613 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6614 if (ql2xtgt_tape_enable)
6615 /* Enable FC Tape support */
6616 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6617 else
6618 /* Disable FC Tape support */
6619 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6620
2d70c103 6621 /* Disable Full Login after LIP */
ad950360 6622 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6623
6624 /*
6625 * clear BIT 15 explicitly as we have seen at least
6626 * a couple of instances where this was set and this
6627 * was causing the firmware to not be initialized.
6628 */
6629 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6630 /* Enable target PRLI control */
ad950360 6631 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6632 } else {
6633 if (ha->tgt.saved_set) {
6634 nv->exchange_count = ha->tgt.saved_exchange_count;
6635 nv->firmware_options_1 =
6636 ha->tgt.saved_firmware_options_1;
6637 nv->firmware_options_2 =
6638 ha->tgt.saved_firmware_options_2;
6639 nv->firmware_options_3 =
6640 ha->tgt.saved_firmware_options_3;
6641 }
6642 return;
6643 }
6644
7c3f8fd1 6645 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6646 if (vha->flags.init_done)
6647 fc_host_supported_classes(vha->host) =
6648 FC_COS_CLASS2 | FC_COS_CLASS3;
6649
ad950360 6650 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6651 } else {
6652 if (vha->flags.init_done)
6653 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6654
ad950360 6655 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6656 }
6657}
6658
6659void
6660qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6661 struct init_cb_24xx *icb)
6662{
6663 struct qla_hw_data *ha = vha->hw;
6664
481ce733
QT		 6665 if (!QLA_TGT_MODE_ENABLED())
6666 return;
6667
2d70c103
NB		 6668 if (ha->tgt.node_name_set) {
6669 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6670 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6671 }
481ce733
QT		 6672
6673 /* disable ZIO at start time. */
6674 if (!vha->flags.init_done) {
6675 uint32_t tmp;
6676 tmp = le32_to_cpu(icb->firmware_options_2);
6677 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6678 icb->firmware_options_2 = cpu_to_le32(tmp);
6679 }
2d70c103
NB		 6680}
6681
aa230bc5
AE		 6682void
6683qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6684{
6685 struct qla_hw_data *ha = vha->hw;
6686
6687 if (!QLA_TGT_MODE_ENABLED())
6688 return;
6689
ead03855 6690 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6691 if (!ha->tgt.saved_set) {
6692 /* We save only once */
6693 ha->tgt.saved_exchange_count = nv->exchange_count;
6694 ha->tgt.saved_firmware_options_1 =
6695 nv->firmware_options_1;
6696 ha->tgt.saved_firmware_options_2 =
6697 nv->firmware_options_2;
6698 ha->tgt.saved_firmware_options_3 =
6699 nv->firmware_options_3;
6700 ha->tgt.saved_set = 1;
6701 }
6702
99e1b683 6703 if (qla_tgt_mode_enabled(vha))
ead03855 6704 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6705 else /* dual */
6706 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6707
6708 /* Enable target mode */
ad950360 6709 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6710
6711 /* Disable ini mode, if requested */
726b8548 6712 if (qla_tgt_mode_enabled(vha))
ad950360 6713 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6714 /* Disable Full Login after LIP */
ad950360 6715 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6716 /* Enable initial LIP */
ad950360 6717 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6718 /*
6719 * clear BIT 15 explicitly as we have seen at
6720 * least a couple of instances where this was set
6721 * and this was causing the firmware to not be
6722 * initialized.
6723 */
6724 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6725 if (ql2xtgt_tape_enable)
6726 /* Enable FC tape support */
6727 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6728 else
6729 /* Disable FC tape support */
6730 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6731
aa230bc5 6732 /* Disable Full Login after LIP */
ad950360 6733 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6734 /* Enable target PRLI control */
ad950360 6735 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6736 } else {
6737 if (ha->tgt.saved_set) {
6738 nv->exchange_count = ha->tgt.saved_exchange_count;
6739 nv->firmware_options_1 =
6740 ha->tgt.saved_firmware_options_1;
6741 nv->firmware_options_2 =
6742 ha->tgt.saved_firmware_options_2;
6743 nv->firmware_options_3 =
6744 ha->tgt.saved_firmware_options_3;
6745 }
6746 return;
6747 }
6748
7c3f8fd1 6749 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 6750 if (vha->flags.init_done)
6751 fc_host_supported_classes(vha->host) =
6752 FC_COS_CLASS2 | FC_COS_CLASS3;
6753
ad950360 6754 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6755 } else {
6756 if (vha->flags.init_done)
6757 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6758
ad950360 6759 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6760 }
6761}
6762
6763void
6764qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6765 struct init_cb_81xx *icb)
6766{
6767 struct qla_hw_data *ha = vha->hw;
6768
6769 if (!QLA_TGT_MODE_ENABLED())
6770 return;
6771
6772 if (ha->tgt.node_name_set) {
6773 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6774 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6775 }
481ce733
QT		 6776
6777 /* disable ZIO at start time. */
6778 if (!vha->flags.init_done) {
6779 uint32_t tmp;
6780 tmp = le32_to_cpu(icb->firmware_options_2);
6781 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6782 icb->firmware_options_2 = cpu_to_le32(tmp);
6783 }
6784
aa230bc5
AE		 6785}
6786
6787void
6788qlt_83xx_iospace_config(struct qla_hw_data *ha)
6789{
6790 if (!QLA_TGT_MODE_ENABLED())
6791 return;
6792
6793 ha->msix_count += 1; /* For ATIO Q */
6794}
6795
2d70c103
NB		 6796
6797void
6798qlt_modify_vp_config(struct scsi_qla_host *vha,
6799 struct vp_config_entry_24xx *vpmod)
6800{
ead03855
QT		 6801 /* enable target mode. Bit5 = 1 => disable */
6802 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6803 vpmod->options_idx1 &= ~BIT_5;
726b8548 6804
ead03855 6805 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6806 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6807 vpmod->options_idx1 &= ~BIT_4;
6808}
6809
6810void
6811qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6812{
482c9dc7
QT		 6813 int rc;
6814
2d70c103
NB		 6815 if (!QLA_TGT_MODE_ENABLED())
6816 return;
6817
b20f02e1 6818 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6819 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6820 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6821 } else {
6822 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6823 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6824 }
6825
0e8cd71c
SK		 6826 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6827 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6828
6829 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6830 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6831 qlt_unknown_atio_work_fn);
6832
2d70c103 6833 qlt_clear_mode(base_vha);
482c9dc7
QT		 6834
6835 rc = btree_init32(&ha->tgt.host_map);
6836 if (rc)
83548fe2 6837 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6838 "Unable to initialize ha->host_map btree\n");
6839
6840 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6841}
6842
aa230bc5
AE		 6843irqreturn_t
6844qla83xx_msix_atio_q(int irq, void *dev_id)
6845{
6846 struct rsp_que *rsp;
6847 scsi_qla_host_t *vha;
6848 struct qla_hw_data *ha;
6849 unsigned long flags;
6850
6851 rsp = (struct rsp_que *) dev_id;
6852 ha = rsp->hw;
6853 vha = pci_get_drvdata(ha->pdev);
6854
2f424b9b 6855 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6856
2f424b9b 6857 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6858
2f424b9b 6859 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6860
6861 return IRQ_HANDLED;
6862}
6863
2f424b9b
QT		 6864static void
6865qlt_handle_abts_recv_work(struct work_struct *work)
6866{
6867 struct qla_tgt_sess_op *op = container_of(work,
6868 struct qla_tgt_sess_op, work);
6869 scsi_qla_host_t *vha = op->vha;
6870 struct qla_hw_data *ha = vha->hw;
6871 unsigned long flags;
6872
7c3f8fd1
QT		 6873 if (qla2x00_reset_active(vha) ||
6874 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 6875 return;
6876
6877 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6878 qlt_24xx_process_atio_queue(vha, 0);
6879 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6880
6881 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 6882 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 6883 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6884
6885 kfree(op);
2f424b9b
QT		 6886}
6887
6888void
82de802a
QT		 6889qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6890 response_t *pkt)
2f424b9b
QT		 6891{
6892 struct qla_tgt_sess_op *op;
6893
6894 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6895
6896 if (!op) {
6897 /* do not reach for ATIO queue here. This is best effort err
6898 * recovery at this point.
6899 */
82de802a 6900 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 6901 return;
6902 }
6903
6904 memcpy(&op->atio, pkt, sizeof(*pkt));
6905 op->vha = vha;
7c3f8fd1 6906 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 6907 op->rsp = rsp;
2f424b9b
QT		 6908 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6909 queue_work(qla_tgt_wq, &op->work);
6910 return;
6911}
6912
2d70c103
NB		 6913int
6914qlt_mem_alloc(struct qla_hw_data *ha)
6915{
6916 if (!QLA_TGT_MODE_ENABLED())
6917 return 0;
6918
6919 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6920 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6921 if (!ha->tgt.tgt_vp_map)
6922 return -ENOMEM;
6923
6924 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6925 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6926 &ha->tgt.atio_dma, GFP_KERNEL);
6927 if (!ha->tgt.atio_ring) {
6928 kfree(ha->tgt.tgt_vp_map);
6929 return -ENOMEM;
6930 }
6931 return 0;
6932}
6933
6934void
6935qlt_mem_free(struct qla_hw_data *ha)
6936{
6937 if (!QLA_TGT_MODE_ENABLED())
6938 return;
6939
6940 if (ha->tgt.atio_ring) {
6941 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6942 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6943 ha->tgt.atio_dma);
6944 }
6945 kfree(ha->tgt.tgt_vp_map);
6946}
6947
6948/* vport_slock to be held by the caller */
6949void
6950qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6951{
482c9dc7
QT		 6952 void *slot;
6953 u32 key;
6954 int rc;
6955
2d70c103
NB		 6956 if (!QLA_TGT_MODE_ENABLED())
6957 return;
6958
482c9dc7
QT		 6959 key = vha->d_id.b24;
6960
2d70c103
NB		 6961 switch (cmd) {
6962 case SET_VP_IDX:
6963 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
6964 break;
6965 case SET_AL_PA:
482c9dc7
QT		 6966 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6967 if (!slot) {
83548fe2 6968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 6969 "Save vha in host_map %p %06x\n", vha, key);
6970 rc = btree_insert32(&vha->hw->tgt.host_map,
6971 key, vha, GFP_ATOMIC);
6972 if (rc)
83548fe2 6973 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 6974 "Unable to insert s_id into host_map: %06x\n",
6975 key);
6976 return;
6977 }
83548fe2
QT		 6978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
6979 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 6980 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 6981 break;
6982 case RESET_VP_IDX:
6983 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
6984 break;
6985 case RESET_AL_PA:
83548fe2 6986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 6987 "clear vha in host_map %p %06x\n", vha, key);
6988 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
6989 if (slot)
6990 btree_remove32(&vha->hw->tgt.host_map, key);
6991 vha->d_id.b24 = 0;
2d70c103
NB		 6992 break;
6993 }
6994}
6995
482c9dc7
QT		 6996void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
6997{
6998 unsigned long flags;
6999 struct qla_hw_data *ha = vha->hw;
7000
7001 if (!vha->d_id.b24) {
7002 spin_lock_irqsave(&ha->vport_slock, flags);
7003 vha->d_id = id;
7004 qlt_update_vp_map(vha, SET_AL_PA);
7005 spin_unlock_irqrestore(&ha->vport_slock, flags);
7006 } else if (vha->d_id.b24 != id.b24) {
7007 spin_lock_irqsave(&ha->vport_slock, flags);
7008 qlt_update_vp_map(vha, RESET_AL_PA);
7009 vha->d_id = id;
7010 qlt_update_vp_map(vha, SET_AL_PA);
7011 spin_unlock_irqrestore(&ha->vport_slock, flags);
7012 }
7013}
7014
2d70c103
NB		 7015static int __init qlt_parse_ini_mode(void)
7016{
7017 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7018 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7019 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7020 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7021 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7022 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7023 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7024 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7025 else
7026 return false;
7027
7028 return true;
7029}
7030
7031int __init qlt_init(void)
7032{
7033 int ret;
7034
7035 if (!qlt_parse_ini_mode()) {
7036 ql_log(ql_log_fatal, NULL, 0xe06b,
7037 "qlt_parse_ini_mode() failed\n");
7038 return -EINVAL;
7039 }
7040
7041 if (!QLA_TGT_MODE_ENABLED())
7042 return 0;
7043
2d70c103
NB		 7044 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7045 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7046 qla_tgt_mgmt_cmd), 0, NULL);
7047 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7048 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7049 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7050 return -ENOMEM;
2d70c103
NB		 7051 }
7052
b7bd104e 7053 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7054 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7055 0, NULL);
b7bd104e
AP		 7056
7057 if (!qla_tgt_plogi_cachep) {
7058 ql_log(ql_log_fatal, NULL, 0xe06d,
7059 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7060 ret = -ENOMEM;
7061 goto out_mgmt_cmd_cachep;
7062 }
7063
2d70c103
NB		 7064 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7065 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7066 if (!qla_tgt_mgmt_cmd_mempool) {
7067 ql_log(ql_log_fatal, NULL, 0xe06e,
7068 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7069 ret = -ENOMEM;
b7bd104e 7070 goto out_plogi_cachep;
2d70c103
NB		 7071 }
7072
7073 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7074 if (!qla_tgt_wq) {
7075 ql_log(ql_log_fatal, NULL, 0xe06f,
7076 "alloc_workqueue for qla_tgt_wq failed\n");
7077 ret = -ENOMEM;
7078 goto out_cmd_mempool;
7079 }
7080 /*
7081 * Return 1 to signal that initiator-mode is being disabled
7082 */
7083 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7084
7085out_cmd_mempool:
7086 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7087out_plogi_cachep:
7088 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7089out_mgmt_cmd_cachep:
7090 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7091 return ret;
7092}
7093
7094void qlt_exit(void)
7095{
7096 if (!QLA_TGT_MODE_ENABLED())
7097 return;
7098
7099 destroy_workqueue(qla_tgt_wq);
7100 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7101 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7102 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7103}
Linux 6.x block layer and io_uring tree(s)