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scsi: qla2xxx: Tweak resource count dump
[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;
b5d15312 148struct 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__);
81881861 453 /* fall through */
2d70c103
NB		 454 case CTIO_TYPE7:
455 {
456 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
457 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
458 entry->vp_index);
459 if (unlikely(!host)) {
460 ql_dbg(ql_dbg_tgt, vha, 0xe041,
461 "qla_target(%d): Response pkt (CTIO_TYPE7) "
462 "received, with unknown vp_index %d\n",
463 vha->vp_idx, entry->vp_index);
464 break;
465 }
82de802a 466 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 467 break;
468 }
469
470 case IMMED_NOTIFY_TYPE:
471 {
472 struct scsi_qla_host *host = vha;
473 struct imm_ntfy_from_isp *entry =
474 (struct imm_ntfy_from_isp *)pkt;
475
476 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
477 if (unlikely(!host)) {
478 ql_dbg(ql_dbg_tgt, vha, 0xe042,
479 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
480 "received, with unknown vp_index %d\n",
481 vha->vp_idx, entry->u.isp24.vp_index);
482 break;
483 }
82de802a 484 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 485 break;
486 }
487
488 case NOTIFY_ACK_TYPE:
489 {
490 struct scsi_qla_host *host = vha;
491 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
492
493 if (0xFF != entry->u.isp24.vp_index) {
494 host = qlt_find_host_by_vp_idx(vha,
495 entry->u.isp24.vp_index);
496 if (unlikely(!host)) {
497 ql_dbg(ql_dbg_tgt, vha, 0xe043,
498 "qla_target(%d): Response "
499 "pkt (NOTIFY_ACK_TYPE) "
500 "received, with unknown "
501 "vp_index %d\n", vha->vp_idx,
502 entry->u.isp24.vp_index);
503 break;
504 }
505 }
82de802a 506 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 507 break;
508 }
509
510 case ABTS_RECV_24XX:
511 {
512 struct abts_recv_from_24xx *entry =
513 (struct abts_recv_from_24xx *)pkt;
514 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
515 entry->vp_index);
516 if (unlikely(!host)) {
517 ql_dbg(ql_dbg_tgt, vha, 0xe044,
518 "qla_target(%d): Response pkt "
519 "(ABTS_RECV_24XX) received, with unknown "
520 "vp_index %d\n", vha->vp_idx, entry->vp_index);
521 break;
522 }
82de802a 523 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 524 break;
525 }
526
527 case ABTS_RESP_24XX:
528 {
529 struct abts_resp_to_24xx *entry =
530 (struct abts_resp_to_24xx *)pkt;
531 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
532 entry->vp_index);
533 if (unlikely(!host)) {
534 ql_dbg(ql_dbg_tgt, vha, 0xe045,
535 "qla_target(%d): Response pkt "
536 "(ABTS_RECV_24XX) received, with unknown "
537 "vp_index %d\n", vha->vp_idx, entry->vp_index);
538 break;
539 }
82de802a 540 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 541 break;
542 }
543
544 default:
82de802a 545 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 546 break;
547 }
548
549}
550
b7bd104e
AP		 551/*
552 * All qlt_plogi_ack_t operations are protected by hardware_lock
553 */
726b8548
QT		 554static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
555 struct imm_ntfy_from_isp *ntfy, int type)
556{
557 struct qla_work_evt *e;
558 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
559 if (!e)
560 return QLA_FUNCTION_FAILED;
561
562 e->u.nack.fcport = fcport;
563 e->u.nack.type = type;
564 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
565 return qla2x00_post_work(vha, e);
566}
567
568static
25ff6af1 569void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 570{
726b8548 571 struct srb *sp = (struct srb *)s;
25ff6af1 572 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 573 unsigned long flags;
574
83548fe2
QT		 575 ql_dbg(ql_dbg_disc, vha, 0x20f2,
576 "Async done-%s res %x %8phC type %d\n",
577 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 578
579 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
580 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 581 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 582
583 switch (sp->type) {
584 case SRB_NACK_PLOGI:
585 sp->fcport->login_gen++;
586 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
587 sp->fcport->logout_on_delete = 1;
5b33469a 588 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
3515832c 589 sp->fcport->send_els_logo = 0;
726b8548
QT		 590 break;
591
592 case SRB_NACK_PRLI:
593 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
594 sp->fcport->deleted = 0;
3515832c 595 sp->fcport->send_els_logo = 0;
726b8548
QT		 596
597 if (!sp->fcport->login_succ &&
598 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
599 sp->fcport->login_succ = 1;
600
601 vha->fcport_count++;
602
603 if (!IS_IIDMA_CAPABLE(vha->hw) ||
604 !vha->hw->flags.gpsc_supported) {
83548fe2
QT		 605 ql_dbg(ql_dbg_disc, vha, 0x20f3,
606 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
607 __func__, __LINE__,
608 sp->fcport->port_name,
609 vha->fcport_count);
726b8548
QT		 610
611 qla24xx_post_upd_fcport_work(vha, sp->fcport);
612 } else {
83548fe2
QT		 613 ql_dbg(ql_dbg_disc, vha, 0x20f5,
614 "%s %d %8phC post gpsc fcp_cnt %d\n",
615 __func__, __LINE__,
616 sp->fcport->port_name,
617 vha->fcport_count);
726b8548
QT		 618
619 qla24xx_post_gpsc_work(vha, sp->fcport);
620 }
621 }
622 break;
623
624 case SRB_NACK_LOGO:
625 sp->fcport->login_gen++;
626 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
627 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
628 break;
629 }
630 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
631
25ff6af1 632 sp->free(sp);
726b8548
QT		 633}
634
635int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
636 struct imm_ntfy_from_isp *ntfy, int type)
637{
638 int rval = QLA_FUNCTION_FAILED;
639 srb_t *sp;
640 char *c = NULL;
641
642 fcport->flags |= FCF_ASYNC_SENT;
643 switch (type) {
644 case SRB_NACK_PLOGI:
645 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
646 c = "PLOGI";
647 break;
648 case SRB_NACK_PRLI:
649 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 650 fcport->deleted = 0;
726b8548
QT		 651 c = "PRLI";
652 break;
653 case SRB_NACK_LOGO:
654 fcport->fw_login_state = DSC_LS_LOGO_PEND;
655 c = "LOGO";
656 break;
657 }
658
659 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
660 if (!sp)
661 goto done;
662
663 sp->type = type;
664 sp->name = "nack";
665
666 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
667
668 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
2e01d0ba 669 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 670 sp->done = qla2x00_async_nack_sp_done;
671
672 rval = qla2x00_start_sp(sp);
673 if (rval != QLA_SUCCESS)
674 goto done_free_sp;
675
83548fe2
QT		 676 ql_dbg(ql_dbg_disc, vha, 0x20f4,
677 "Async-%s %8phC hndl %x %s\n",
678 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 679
680 return rval;
681
682done_free_sp:
25ff6af1 683 sp->free(sp);
726b8548
QT		 684done:
685 fcport->flags &= ~FCF_ASYNC_SENT;
686 return rval;
687}
688
689void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
690{
691 fc_port_t *t;
692 unsigned long flags;
693
694 switch (e->u.nack.type) {
695 case SRB_NACK_PRLI:
696 mutex_lock(&vha->vha_tgt.tgt_mutex);
697 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
698 mutex_unlock(&vha->vha_tgt.tgt_mutex);
699 if (t) {
83548fe2 700 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 701 "%s create sess success %p", __func__, t);
702 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
703 /* create sess has an extra kref */
704 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
705 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
706 }
707 break;
708 }
709 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
710 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
711}
712
713void qla24xx_delete_sess_fn(struct work_struct *work)
714{
715 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
716 struct qla_hw_data *ha = fcport->vha->hw;
717 unsigned long flags;
718
719 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
720
721 if (fcport->se_sess) {
722 ha->tgt.tgt_ops->shutdown_sess(fcport);
723 ha->tgt.tgt_ops->put_sess(fcport);
724 } else {
725 qlt_unreg_sess(fcport);
726 }
727 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
728}
729
730/*
731 * Called from qla2x00_reg_remote_port()
732 */
733void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
734{
735 struct qla_hw_data *ha = vha->hw;
736 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
737 struct fc_port *sess = fcport;
738 unsigned long flags;
739
740 if (!vha->hw->tgt.tgt_ops)
741 return;
742
743 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
744 if (tgt->tgt_stop) {
745 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
746 return;
747 }
748
749 if (fcport->disc_state == DSC_DELETE_PEND) {
750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
751 return;
752 }
753
754 if (!sess->se_sess) {
755 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
756
757 mutex_lock(&vha->vha_tgt.tgt_mutex);
758 sess = qlt_create_sess(vha, fcport, false);
759 mutex_unlock(&vha->vha_tgt.tgt_mutex);
760
761 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
762 } else {
763 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
764 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
765 return;
766 }
767
768 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 769 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 770 "%s: kref_get fail sess %8phC \n",
771 __func__, sess->port_name);
772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
773 return;
774 }
775
776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
777 "qla_target(%u): %ssession for port %8phC "
778 "(loop ID %d) reappeared\n", vha->vp_idx,
779 sess->local ? "local " : "", sess->port_name, sess->loop_id);
780
781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
782 "Reappeared sess %p\n", sess);
783
784 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
785 fcport->loop_id,
786 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
787 }
788
789 if (sess && sess->local) {
790 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
791 "qla_target(%u): local session for "
792 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
793 fcport->port_name, sess->loop_id);
794 sess->local = 0;
795 }
796 ha->tgt.tgt_ops->put_sess(sess);
797 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
798}
b7bd104e
AP		 799
800/*
801 * This is a zero-base ref-counting solution, since hardware_lock
802 * guarantees that ref_count is not modified concurrently.
803 * Upon successful return content of iocb is undefined
804 */
5d964837 805static struct qlt_plogi_ack_t *
b7bd104e
AP		 806qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
807 struct imm_ntfy_from_isp *iocb)
808{
5d964837 809 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 810
811 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
812 if (pla->id.b24 == id->b24) {
813 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 814 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 815 return pla;
816 }
817 }
818
819 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
820 if (!pla) {
821 ql_dbg(ql_dbg_async, vha, 0x5088,
822 "qla_target(%d): Allocation of plogi_ack failed\n",
823 vha->vp_idx);
824 return NULL;
825 }
826
5d964837 827 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 828 pla->id = *id;
829 list_add_tail(&pla->list, &vha->plogi_ack_list);
830
831 return pla;
832}
833
726b8548 834void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 835 struct qlt_plogi_ack_t *pla)
b7bd104e 836{
5d964837 837 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 838 port_id_t port_id;
839 uint16_t loop_id;
840 fc_port_t *fcport = pla->fcport;
841
b7bd104e
AP		 842 BUG_ON(!pla->ref_count);
843 pla->ref_count--;
844
845 if (pla->ref_count)
846 return;
847
726b8548 848 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 849 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 850 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
851 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
852 iocb->u.isp24.port_id[0],
853 le16_to_cpu(iocb->u.isp24.nport_handle),
854 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 855
856 port_id.b.domain = iocb->u.isp24.port_id[2];
857 port_id.b.area = iocb->u.isp24.port_id[1];
858 port_id.b.al_pa = iocb->u.isp24.port_id[0];
859 port_id.b.rsvd_1 = 0;
860
861 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
862
863 fcport->loop_id = loop_id;
864 fcport->d_id = port_id;
865 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
866
867 list_for_each_entry(fcport, &vha->vp_fcports, list) {
868 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
869 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
870 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
871 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
872 }
b7bd104e
AP		 873
874 list_del(&pla->list);
875 kmem_cache_free(qla_tgt_plogi_cachep, pla);
876}
877
726b8548 878void
5d964837
QT		 879qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
880 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 881{
5d964837 882 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 883 /* Inc ref_count first because link might already be pointing at pla */
884 pla->ref_count++;
885
726b8548
QT		 886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
887 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
888 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
889 sess, link, sess->port_name,
890 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
891 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
892 pla->ref_count, pla, link);
893
5ef696aa
QT		 894 if (link == QLT_PLOGI_LINK_CONFLICT) {
895 switch (sess->disc_state) {
896 case DSC_DELETED:
897 case DSC_DELETE_PEND:
898 pla->ref_count--;
899 return;
900 default:
901 break;
902 }
903 }
904
b7bd104e
AP		 905 if (sess->plogi_link[link])
906 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
907
726b8548
QT		 908 if (link == QLT_PLOGI_LINK_SAME_WWN)
909 pla->fcport = sess;
b7bd104e
AP		 910
911 sess->plogi_link[link] = pla;
912}
913
71cdc079
AP		 914typedef struct {
915 /* These fields must be initialized by the caller */
916 port_id_t id;
917 /*
918 * number of cmds dropped while we were waiting for
919 * initiator to ack LOGO initialize to 1 if LOGO is
920 * triggered by a command, otherwise, to 0
921 */
922 int cmd_count;
923
924 /* These fields are used by callee */
925 struct list_head list;
926} qlt_port_logo_t;
927
928static void
929qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
930{
931 qlt_port_logo_t *tmp;
932 int res;
933
934 mutex_lock(&vha->vha_tgt.tgt_mutex);
935
936 list_for_each_entry(tmp, &vha->logo_list, list) {
937 if (tmp->id.b24 == logo->id.b24) {
938 tmp->cmd_count += logo->cmd_count;
939 mutex_unlock(&vha->vha_tgt.tgt_mutex);
940 return;
941 }
942 }
943
944 list_add_tail(&logo->list, &vha->logo_list);
945
946 mutex_unlock(&vha->vha_tgt.tgt_mutex);
947
948 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
949
950 mutex_lock(&vha->vha_tgt.tgt_mutex);
951 list_del(&logo->list);
952 mutex_unlock(&vha->vha_tgt.tgt_mutex);
953
b7bd104e
AP		 954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
955 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
956 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
957 logo->cmd_count, res);
71cdc079
AP		 958}
959
2d70c103
NB		 960static void qlt_free_session_done(struct work_struct *work)
961{
5d964837 962 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 963 free_work);
964 struct qla_tgt *tgt = sess->tgt;
965 struct scsi_qla_host *vha = sess->vha;
966 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 967 unsigned long flags;
968 bool logout_started = false;
726b8548 969 struct event_arg ea;
41dc529a 970 scsi_qla_host_t *base_vha;
a6ca8878
AP		 971
972 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
973 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 974 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 975 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 976 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 977 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 978 sess->send_els_logo);
2d70c103 979
726b8548 980 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 981 if (sess->send_els_logo) {
982 qlt_port_logo_t logo;
71cdc079 983
41dc529a
QT		 984 logo.id = sess->d_id;
985 logo.cmd_count = 0;
986 qlt_send_first_logo(vha, &logo);
987 }
988
ba743f91 989 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 990 int rc;
991
992 rc = qla2x00_post_async_logout_work(vha, sess, NULL);
993 if (rc != QLA_SUCCESS)
994 ql_log(ql_log_warn, vha, 0xf085,
995 "Schedule logo failed sess %p rc %d\n",
996 sess, rc);
997 else
998 logout_started = true;
999 }
726b8548 1000 }
a6ca8878 1001
2d70c103
NB		 1002 /*
1003 * Release the target session for FC Nexus from fabric module code.
1004 */
1005 if (sess->se_sess != NULL)
1006 ha->tgt.tgt_ops->free_session(sess);
1007
a6ca8878
AP		 1008 if (logout_started) {
1009 bool traced = false;
1010
6aa7de05 1011 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878
AP		 1012 if (!traced) {
1013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1014 "%s: waiting for sess %p logout\n",
1015 __func__, sess);
1016 traced = true;
1017 }
1018 msleep(100);
1019 }
1020
726b8548 1021 ql_dbg(ql_dbg_disc, vha, 0xf087,
41dc529a
QT		 1022 "%s: sess %p logout completed\n",__func__, sess);
1023 }
1024
1025 if (sess->logo_ack_needed) {
1026 sess->logo_ack_needed = 0;
1027 qla24xx_async_notify_ack(vha, sess,
1028 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1029 }
1030
726b8548
QT		 1031 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1032 if (sess->se_sess) {
1033 sess->se_sess = NULL;
1034 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1035 tgt->sess_count--;
1036 }
1037
1038 sess->disc_state = DSC_DELETED;
1039 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1040 sess->deleted = QLA_SESS_DELETED;
1041 sess->login_retry = vha->hw->login_retry_count;
1042
1043 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1044 vha->fcport_count--;
1045 sess->login_succ = 0;
1046 }
1047
ba743f91 1048 qla2x00_clear_loop_id(sess);
726b8548
QT		 1049
1050 if (sess->conflict) {
1051 sess->conflict->login_pause = 0;
1052 sess->conflict = NULL;
1053 if (!test_bit(UNLOADING, &vha->dpc_flags))
1054 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1055 }
1056
b7bd104e 1057 {
5d964837 1058 struct qlt_plogi_ack_t *own =
b7bd104e 1059 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
5d964837 1060 struct qlt_plogi_ack_t *con =
b7bd104e 1061 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1062 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1063
1064 if (con) {
5d964837 1065 iocb = &con->iocb;
b7bd104e 1066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1067 "se_sess %p / sess %p port %8phC is gone,"
1068 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1069 sess->se_sess, sess, sess->port_name,
1070 own ? "releasing own PLOGI" : "no own PLOGI pending",
1071 own ? own->ref_count : -1,
1072 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1073 qlt_plogi_ack_unref(vha, con);
726b8548 1074 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1075 } else {
1076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1077 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1078 sess->se_sess, sess, sess->port_name,
1079 own ? "releasing own PLOGI" :
1080 "no own PLOGI pending",
1081 own ? own->ref_count : -1);
1082 }
1083
726b8548
QT		 1084 if (own) {
1085 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1086 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1087 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1088 }
b7bd104e 1089 }
5d964837
QT		 1090 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1091
2d70c103 1092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1093 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1094 sess, sess->port_name, vha->fcport_count);
2d70c103 1095
726b8548 1096 if (tgt && (tgt->sess_count == 0))
2d70c103 1097 wake_up_all(&tgt->waitQ);
726b8548
QT		 1098
1099 if (vha->fcport_count == 0)
1100 wake_up_all(&vha->fcport_waitQ);
1101
41dc529a
QT		 1102 base_vha = pci_get_drvdata(ha->pdev);
1103 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1104 return;
1105
726b8548
QT		 1106 if (!tgt || !tgt->tgt_stop) {
1107 memset(&ea, 0, sizeof(ea));
1108 ea.event = FCME_DELETE_DONE;
1109 ea.fcport = sess;
1110 qla2x00_fcport_event_handler(vha, &ea);
1111 }
2d70c103
NB		 1112}
1113
7560151b 1114/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1115void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1116{
1117 struct scsi_qla_host *vha = sess->vha;
1118
83548fe2 1119 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1120 "%s sess %p for deletion %8phC\n",
1121 __func__, sess, sess->port_name);
1122
36c78452
QT		 1123 if (sess->se_sess)
1124 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1125
5d964837
QT		 1126 qla2x00_mark_device_lost(vha, sess, 1, 1);
1127
a6ca8878 1128 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1129 sess->disc_state = DSC_DELETE_PEND;
1130 sess->last_rscn_gen = sess->rscn_gen;
1131 sess->last_login_gen = sess->login_gen;
2d70c103 1132
a5d42f4c
DG		 1133 if (sess->nvme_flag & NVME_FLAG_REGISTERED)
1134 schedule_work(&sess->nvme_del_work);
1135
2d70c103
NB		 1136 INIT_WORK(&sess->free_work, qlt_free_session_done);
1137 schedule_work(&sess->free_work);
1138}
5d964837 1139EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1140
2d70c103
NB		 1141static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1142{
1143 struct qla_hw_data *ha = vha->hw;
5d964837 1144 struct fc_port *sess = NULL;
2d70c103
NB		 1145 uint16_t loop_id;
1146 int res = 0;
1147 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1148 unsigned long flags;
2d70c103
NB		 1149
1150 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1151 if (loop_id == 0xFFFF) {
2d70c103 1152 /* Global event */
b2032fd5 1153 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1154 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1155 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1156 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1157 } else {
7560151b 1158 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1159 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1160 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1161 }
1162
1163 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1164 "Using sess for qla_tgt_reset: %p\n", sess);
1165 if (!sess) {
1166 res = -ESRCH;
1167 return res;
1168 }
1169
1170 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1171 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1172 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1173 mcmd, loop_id);
1174
bb1181c9 1175 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1176}
1177
726b8548
QT		 1178static void qla24xx_chk_fcp_state(struct fc_port *sess)
1179{
7c3f8fd1 1180 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1181 sess->logout_on_delete = 0;
1182 sess->logo_ack_needed = 0;
1183 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1184 sess->scan_state = 0;
1185 }
1186}
1187
7560151b 1188/* ha->tgt.sess_lock supposed to be held on entry */
726b8548 1189void qlt_schedule_sess_for_deletion(struct fc_port *sess,
2d70c103
NB		 1190 bool immediate)
1191{
1192 struct qla_tgt *tgt = sess->tgt;
2d70c103 1193
726b8548
QT		 1194 if (sess->disc_state == DSC_DELETE_PEND)
1195 return;
1196
1197 if (sess->disc_state == DSC_DELETED) {
1198 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1199 wake_up_all(&tgt->waitQ);
1200 if (sess->vha->fcport_count == 0)
1201 wake_up_all(&sess->vha->fcport_waitQ);
1202
1203 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1204 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1205 return;
1206 }
2d70c103 1207
726b8548 1208 sess->disc_state = DSC_DELETE_PEND;
2d70c103 1209
726b8548
QT		 1210 if (sess->deleted == QLA_SESS_DELETED)
1211 sess->logout_on_delete = 0;
1212
1213 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1214 qla24xx_chk_fcp_state(sess);
2d70c103 1215
726b8548
QT		 1216 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1217 "Scheduling sess %p for deletion\n", sess);
2d70c103 1218
a01c77d2
QT		 1219 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1220 queue_work(sess->vha->hw->wq, &sess->del_work);
726b8548 1221}
2d70c103 1222
726b8548
QT		 1223void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess)
1224{
1225 unsigned long flags;
1226 struct qla_hw_data *ha = sess->vha->hw;
1227 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1228 qlt_schedule_sess_for_deletion(sess, 1);
1229 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1230}
1231
7560151b 1232/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1233static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1234{
5d964837
QT		 1235 struct fc_port *sess;
1236 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1237
5d964837
QT		 1238 list_for_each_entry(sess, &vha->vp_fcports, list) {
1239 if (sess->se_sess)
726b8548 1240 qlt_schedule_sess_for_deletion(sess, 1);
5d964837 1241 }
2d70c103
NB		 1242
1243 /* At this point tgt could be already dead */
1244}
1245
1246static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1247 uint16_t *loop_id)
1248{
1249 struct qla_hw_data *ha = vha->hw;
1250 dma_addr_t gid_list_dma;
1251 struct gid_list_info *gid_list;
1252 char *id_iter;
1253 int res, rc, i;
1254 uint16_t entries;
1255
1256 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1257 &gid_list_dma, GFP_KERNEL);
1258 if (!gid_list) {
1259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1260 "qla_target(%d): DMA Alloc failed of %u\n",
1261 vha->vp_idx, qla2x00_gid_list_size(ha));
1262 return -ENOMEM;
1263 }
1264
1265 /* Get list of logged in devices */
15f30a57 1266 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1267 if (rc != QLA_SUCCESS) {
1268 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1269 "qla_target(%d): get_id_list() failed: %x\n",
1270 vha->vp_idx, rc);
71cdc079 1271 res = -EBUSY;
2d70c103
NB		 1272 goto out_free_id_list;
1273 }
1274
1275 id_iter = (char *)gid_list;
71cdc079 1276 res = -ENOENT;
2d70c103
NB		 1277 for (i = 0; i < entries; i++) {
1278 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1279 if ((gid->al_pa == s_id[2]) &&
1280 (gid->area == s_id[1]) &&
1281 (gid->domain == s_id[0])) {
1282 *loop_id = le16_to_cpu(gid->loop_id);
1283 res = 0;
1284 break;
1285 }
1286 id_iter += ha->gid_list_info_size;
1287 }
1288
1289out_free_id_list:
1290 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1291 gid_list, gid_list_dma);
1292 return res;
1293}
1294
2d70c103
NB		 1295/*
1296 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1297 * Caller must put it.
1298 */
5d964837 1299static struct fc_port *qlt_create_sess(
2d70c103
NB		 1300 struct scsi_qla_host *vha,
1301 fc_port_t *fcport,
1302 bool local)
1303{
1304 struct qla_hw_data *ha = vha->hw;
726b8548 1305 struct fc_port *sess = fcport;
2d70c103 1306 unsigned long flags;
2d70c103 1307
726b8548
QT		 1308 if (vha->vha_tgt.qla_tgt->tgt_stop)
1309 return NULL;
2d70c103 1310
726b8548
QT		 1311 if (fcport->se_sess) {
1312 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1313 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1314 "%s: kref_get_unless_zero failed for %8phC\n",
1315 __func__, sess->port_name);
1316 return NULL;
2d70c103 1317 }
726b8548 1318 return fcport;
2d70c103 1319 }
0e8cd71c 1320 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1321 sess->local = local;
a6ca8878 1322
726b8548
QT		 1323 /*
1324 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1325 * session eventually ends and release corresponding nport handle.
1326 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1327 * code will adjust these flags as necessary.
1328 */
a6ca8878
AP		 1329 sess->logout_on_delete = 1;
1330 sess->keep_nport_handle = 0;
726b8548 1331 sess->logout_completed = 0;
2d70c103 1332
726b8548
QT		 1333 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1334 &fcport->port_name[0], sess) < 0) {
83548fe2 1335 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1336 "(%d) %8phC check_initiator_node_acl failed\n",
1337 vha->vp_idx, fcport->port_name);
1338 return NULL;
1339 } else {
1340 kref_init(&fcport->sess_kref);
1341 /*
1342 * Take an extra reference to ->sess_kref here to handle
1343 * fc_port access across ->tgt.sess_lock reaquire.
1344 */
1345 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1346 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1347 "%s: kref_get_unless_zero failed for %8phC\n",
1348 __func__, sess->port_name);
1349 return NULL;
1350 }
2d70c103 1351
726b8548
QT		 1352 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1353 if (!IS_SW_RESV_ADDR(sess->d_id))
1354 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1355
726b8548
QT		 1356 qlt_do_generation_tick(vha, &sess->generation);
1357 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1358 }
1359
1360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1361 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1362 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1363 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1364
1365 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1366 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1367 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1368 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1369 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1370 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1371
1372 return sess;
1373}
1374
df673274
AP		 1375/*
1376 * max_gen - specifies maximum session generation
1377 * at which this deletion requestion is still valid
1378 */
1379void
1380qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1381{
0e8cd71c 1382 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1383 struct fc_port *sess = fcport;
7560151b 1384 unsigned long flags;
2d70c103
NB		 1385
1386 if (!vha->hw->tgt.tgt_ops)
1387 return;
1388
b2032fd5 1389 if (!tgt)
2d70c103
NB		 1390 return;
1391
7560151b 1392 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1393 if (tgt->tgt_stop) {
7560151b 1394 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1395 return;
1396 }
5d964837 1397 if (!sess->se_sess) {
7560151b 1398 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1399 return;
1400 }
1401
df673274 1402 if (max_gen - sess->generation < 0) {
7560151b 1403 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1405 "Ignoring stale deletion request for se_sess %p / sess %p"
1406 " for port %8phC, req_gen %d, sess_gen %d\n",
1407 sess->se_sess, sess, sess->port_name, max_gen,
1408 sess->generation);
1409 return;
1410 }
1411
2d70c103
NB		 1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1413
1414 sess->local = 1;
1415 qlt_schedule_sess_for_deletion(sess, false);
7560151b 1416 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1417}
1418
1419static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1420{
1421 struct qla_hw_data *ha = tgt->ha;
1422 unsigned long flags;
1423 int res;
1424 /*
1425 * We need to protect against race, when tgt is freed before or
1426 * inside wake_up()
1427 */
726b8548 1428 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1429 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1430 "tgt %p, sess_count=%d\n",
1431 tgt, tgt->sess_count);
2d70c103 1432 res = (tgt->sess_count == 0);
726b8548 1433 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1434
1435 return res;
1436}
1437
1438/* Called by tcm_qla2xxx configfs code */
3c231bda 1439int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1440{
1441 struct scsi_qla_host *vha = tgt->vha;
1442 struct qla_hw_data *ha = tgt->ha;
1443 unsigned long flags;
1444
3c231bda
NB		 1445 mutex_lock(&qla_tgt_mutex);
1446 if (!vha->fc_vport) {
1447 struct Scsi_Host *sh = vha->host;
1448 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1449 bool npiv_vports;
1450
1451 spin_lock_irqsave(sh->host_lock, flags);
1452 npiv_vports = (fc_host->npiv_vports_inuse);
1453 spin_unlock_irqrestore(sh->host_lock, flags);
1454
1455 if (npiv_vports) {
1456 mutex_unlock(&qla_tgt_mutex);
3a33dc95
QT		 1457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1458 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1459 return -EPERM;
1460 }
1461 }
2d70c103
NB		 1462 if (tgt->tgt_stop || tgt->tgt_stopped) {
1463 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1464 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1465 mutex_unlock(&qla_tgt_mutex);
1466 return -EPERM;
2d70c103
NB		 1467 }
1468
3a33dc95 1469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1470 vha->host_no, vha);
1471 /*
1472 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1473 * Lock is needed, because we still can get an incoming packet.
1474 */
0e8cd71c 1475 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1476 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1477 tgt->tgt_stop = 1;
c5701042 1478 qlt_clear_tgt_db(tgt);
7560151b 1479 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1480 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1481 mutex_unlock(&qla_tgt_mutex);
2d70c103 1482
2d70c103
NB		 1483 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1484 "Waiting for sess works (tgt %p)", tgt);
1485 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1486 while (!list_empty(&tgt->sess_works_list)) {
1487 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1488 flush_scheduled_work();
1489 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1490 }
1491 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1492
1493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1494 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1495
b85e0957 1496 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1497
1498 /* Big hammer */
ead03855
QT		 1499 if (!ha->flags.host_shutting_down &&
1500 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1501 qlt_disable_vha(vha);
1502
1503 /* Wait for sessions to clear out (just in case) */
b85e0957 1504 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
3c231bda 1505 return 0;
2d70c103
NB		 1506}
1507EXPORT_SYMBOL(qlt_stop_phase1);
1508
1509/* Called by tcm_qla2xxx configfs code */
1510void qlt_stop_phase2(struct qla_tgt *tgt)
1511{
3a33dc95 1512 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1513
1514 if (tgt->tgt_stopped) {
0e8cd71c 1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1516 "Already in tgt->tgt_stopped state\n");
1517 dump_stack();
1518 return;
1519 }
3a33dc95
QT		 1520 if (!tgt->tgt_stop) {
1521 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1522 "%s: phase1 stop is not completed\n", __func__);
1523 dump_stack();
1524 return;
1525 }
2d70c103 1526
0e8cd71c 1527 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1528 tgt->tgt_stop = 0;
1529 tgt->tgt_stopped = 1;
0e8cd71c 1530 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1531
3a33dc95 1532 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1533 tgt);
1534}
1535EXPORT_SYMBOL(qlt_stop_phase2);
1536
1537/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1538static void qlt_release(struct qla_tgt *tgt)
2d70c103 1539{
0e8cd71c 1540 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1541 void *node;
1542 u64 key = 0;
1543 u16 i;
1544 struct qla_qpair_hint *h;
bdbe24de 1545 struct qla_hw_data *ha = vha->hw;
2d70c103 1546
3a33dc95
QT		 1547 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1548 !tgt->tgt_stopped)
1549 qlt_stop_phase1(tgt);
1550
0e8cd71c 1551 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1552 qlt_stop_phase2(tgt);
1553
e326d22a
QT		 1554 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1555 unsigned long flags;
1556
1557 h = &tgt->qphints[i];
1558 if (h->qpair) {
1559 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1560 list_del(&h->hint_elem);
1561 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1562 h->qpair = NULL;
1563 }
1564 }
1565 kfree(tgt->qphints);
bdbe24de
QT		 1566 mutex_lock(&qla_tgt_mutex);
1567 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1568 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1569
1570 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1571 btree_remove64(&tgt->lun_qpair_map, key);
1572
1573 btree_destroy64(&tgt->lun_qpair_map);
1574
3be63b1e
SC		 1575 if (vha->vp_idx)
1576 if (ha->tgt.tgt_ops &&
1577 ha->tgt.tgt_ops->remove_target &&
1578 vha->vha_tgt.target_lport_ptr)
1579 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1580
0e8cd71c 1581 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1582
0e8cd71c 1583 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1584 "Release of tgt %p finished\n", tgt);
1585
1586 kfree(tgt);
1587}
1588
1589/* ha->hardware_lock supposed to be held on entry */
1590static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1591 const void *param, unsigned int param_size)
1592{
1593 struct qla_tgt_sess_work_param *prm;
1594 unsigned long flags;
1595
1596 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1597 if (!prm) {
1598 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1599 "qla_target(%d): Unable to create session "
1600 "work, command will be refused", 0);
1601 return -ENOMEM;
1602 }
1603
1604 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1605 "Scheduling work (type %d, prm %p)"
1606 " to find session for param %p (size %d, tgt %p)\n",
1607 type, prm, param, param_size, tgt);
1608
1609 prm->type = type;
1610 memcpy(&prm->tm_iocb, param, param_size);
1611
1612 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1613 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1614 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1615
1616 schedule_work(&tgt->sess_work);
1617
1618 return 0;
1619}
1620
1621/*
1622 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1623 */
82de802a 1624static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1625 struct imm_ntfy_from_isp *ntfy,
1626 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1627 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1628{
82de802a 1629 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1630 struct qla_hw_data *ha = vha->hw;
1631 request_t *pkt;
1632 struct nack_to_isp *nack;
1633
ec7193e2
QT		 1634 if (!ha->flags.fw_started)
1635 return;
1636
2d70c103
NB		 1637 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1638
82de802a 1639 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1640 if (!pkt) {
1641 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1642 "qla_target(%d): %s failed: unable to allocate "
1643 "request packet\n", vha->vp_idx, __func__);
1644 return;
1645 }
1646
0e8cd71c
SK		 1647 if (vha->vha_tgt.qla_tgt != NULL)
1648 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1649
1650 pkt->entry_type = NOTIFY_ACK_TYPE;
1651 pkt->entry_count = 1;
1652
1653 nack = (struct nack_to_isp *)pkt;
1654 nack->ox_id = ntfy->ox_id;
1655
726b8548 1656 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1657 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1658 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1659 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1660 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1661 }
1662 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1663 nack->u.isp24.status = ntfy->u.isp24.status;
1664 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1665 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1666 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1667 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1668 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1669 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1670 nack->u.isp24.srr_reject_code = srr_reject_code;
1671 nack->u.isp24.srr_reject_code_expl = srr_explan;
1672 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1673
1674 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1675 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1676 vha->vp_idx, nack->u.isp24.status);
1677
63163e06
HM		 1678 /* Memory Barrier */
1679 wmb();
82de802a 1680 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1681}
1682
1683/*
1684 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1685 */
82de802a 1686static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1687 struct abts_recv_from_24xx *abts, uint32_t status,
1688 bool ids_reversed)
1689{
82de802a 1690 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1691 struct qla_hw_data *ha = vha->hw;
1692 struct abts_resp_to_24xx *resp;
1693 uint32_t f_ctl;
1694 uint8_t *p;
1695
1696 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1697 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1698 ha, abts, status);
1699
82de802a
QT		 1700 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1701 NULL);
2d70c103
NB		 1702 if (!resp) {
1703 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1704 "qla_target(%d): %s failed: unable to allocate "
1705 "request packet", vha->vp_idx, __func__);
1706 return;
1707 }
1708
1709 resp->entry_type = ABTS_RESP_24XX;
1710 resp->entry_count = 1;
1711 resp->nport_handle = abts->nport_handle;
1712 resp->vp_index = vha->vp_idx;
1713 resp->sof_type = abts->sof_type;
1714 resp->exchange_address = abts->exchange_address;
1715 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1716 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1717 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1718 F_CTL_SEQ_INITIATIVE);
1719 p = (uint8_t *)&f_ctl;
1720 resp->fcp_hdr_le.f_ctl[0] = *p++;
1721 resp->fcp_hdr_le.f_ctl[1] = *p++;
1722 resp->fcp_hdr_le.f_ctl[2] = *p;
1723 if (ids_reversed) {
1724 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1725 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1726 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1727 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1728 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1729 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1730 } else {
1731 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1732 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1733 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1734 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1735 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1736 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1737 }
1738 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1739 if (status == FCP_TMF_CMPL) {
1740 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1741 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1742 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1743 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1744 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1745 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1746 } else {
1747 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1748 resp->payload.ba_rjt.reason_code =
1749 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1750 /* Other bytes are zero */
1751 }
1752
0e8cd71c 1753 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1754
63163e06
HM		 1755 /* Memory Barrier */
1756 wmb();
8abfa9e2
QT		 1757 if (qpair->reqq_start_iocbs)
1758 qpair->reqq_start_iocbs(qpair);
1759 else
1760 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1761}
1762
1763/*
1764 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1765 */
1766static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1767 struct abts_resp_from_24xx_fw *entry)
1768{
1769 struct ctio7_to_24xx *ctio;
1770
1771 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1772 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
2d70c103 1773
82de802a
QT		 1774 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1775 vha->hw->base_qpair, NULL);
2d70c103
NB		 1776 if (ctio == NULL) {
1777 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1778 "qla_target(%d): %s failed: unable to allocate "
1779 "request packet\n", vha->vp_idx, __func__);
1780 return;
1781 }
1782
1783 /*
1784 * We've got on entrance firmware's response on by us generated
1785 * ABTS response. So, in it ID fields are reversed.
1786 */
1787
1788 ctio->entry_type = CTIO_TYPE7;
1789 ctio->entry_count = 1;
1790 ctio->nport_handle = entry->nport_handle;
1791 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1792 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1793 ctio->vp_index = vha->vp_idx;
1794 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1795 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1796 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1797 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1798 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1799 CTIO7_FLAGS_TERMINATE);
33a5fcee 1800 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1801
63163e06
HM		 1802 /* Memory Barrier */
1803 wmb();
2d70c103
NB		 1804 qla2x00_start_iocbs(vha, vha->req);
1805
82de802a
QT		 1806 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1807 (struct abts_recv_from_24xx *)entry,
2d70c103
NB		 1808 FCP_TMF_CMPL, true);
1809}
1810
8b2f5ff3
SN		 1811static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1812{
1813 struct qla_tgt_sess_op *op;
1814 struct qla_tgt_cmd *cmd;
8b631d87 1815 unsigned long flags;
8b2f5ff3 1816
8b631d87 1817 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1818 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1819 if (tag == op->atio.u.isp24.exchange_addr) {
1820 op->aborted = true;
8b631d87 1821 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1822 return 1;
1823 }
1824 }
1825
41dc529a
QT		 1826 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1827 if (tag == op->atio.u.isp24.exchange_addr) {
1828 op->aborted = true;
8b631d87 1829 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1830 return 1;
1831 }
1832 }
1833
8b2f5ff3
SN		 1834 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1835 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1836 cmd->aborted = 1;
8b631d87 1837 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1838 return 1;
1839 }
1840 }
8b631d87 1841 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1842
8b2f5ff3
SN		 1843 return 0;
1844}
1845
1846/* drop cmds for the given lun
1847 * XXX only looks for cmds on the port through which lun reset was recieved
1848 * XXX does not go through the list of other port (which may have cmds
1849 * for the same lun)
1850 */
1851static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1852 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1853{
1854 struct qla_tgt_sess_op *op;
1855 struct qla_tgt_cmd *cmd;
1856 uint32_t key;
8b631d87 1857 unsigned long flags;
8b2f5ff3
SN		 1858
1859 key = sid_to_key(s_id);
8b631d87 1860 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1861 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1862 uint32_t op_key;
f775bd14 1863 u64 op_lun;
8b2f5ff3
SN		 1864
1865 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1866 op_lun = scsilun_to_int(
1867 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1868 if (op_key == key && op_lun == lun)
1869 op->aborted = true;
1870 }
41dc529a
QT		 1871
1872 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1873 uint32_t op_key;
1874 u64 op_lun;
1875
1876 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1877 op_lun = scsilun_to_int(
1878 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1879 if (op_key == key && op_lun == lun)
1880 op->aborted = true;
1881 }
1882
8b2f5ff3
SN		 1883 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1884 uint32_t cmd_key;
f775bd14 1885 u64 cmd_lun;
8b2f5ff3
SN		 1886
1887 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1888 cmd_lun = scsilun_to_int(
1889 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1890 if (cmd_key == key && cmd_lun == lun)
193b50b9 1891 cmd->aborted = 1;
8b2f5ff3 1892 }
8b631d87 1893 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1894}
1895
2d70c103
NB		 1896/* ha->hardware_lock supposed to be held on entry */
1897static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1898 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1899{
1900 struct qla_hw_data *ha = vha->hw;
1901 struct qla_tgt_mgmt_cmd *mcmd;
1902 int rc;
06e97b48 1903
eb5ae233
NB		 1904 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1905 /* send TASK_ABORT response immediately */
48ea2ced 1906 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
eb5ae233 1907 return 0;
8b2f5ff3 1908 }
2d70c103
NB		 1909
1910 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1911 "qla_target(%d): task abort (tag=%d)\n",
1912 vha->vp_idx, abts->exchange_addr_to_abort);
1913
1914 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1915 if (mcmd == NULL) {
1916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1917 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1918 vha->vp_idx, __func__);
1919 return -ENOMEM;
1920 }
1921 memset(mcmd, 0, sizeof(*mcmd));
1922
1923 mcmd->sess = sess;
1924 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 1925 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 1926 mcmd->tmr_func = QLA_TGT_ABTS;
82de802a 1927 mcmd->qpair = ha->base_qpair;
72fcd4eb 1928 mcmd->vha = vha;
2d70c103 1929
eb5ae233
NB		 1930 /*
1931 * LUN is looked up by target-core internally based on the passed
1932 * abts->exchange_addr_to_abort tag.
1933 */
1934 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
2d70c103
NB		 1935 abts->exchange_addr_to_abort);
1936 if (rc != 0) {
1937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1938 "qla_target(%d): tgt_ops->handle_tmr()"
1939 " failed: %d", vha->vp_idx, rc);
1940 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1941 return -EFAULT;
1942 }
1943
1944 return 0;
1945}
1946
1947/*
1948 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1949 */
1950static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1951 struct abts_recv_from_24xx *abts)
1952{
1953 struct qla_hw_data *ha = vha->hw;
5d964837 1954 struct fc_port *sess;
2d70c103
NB		 1955 uint32_t tag = abts->exchange_addr_to_abort;
1956 uint8_t s_id[3];
1957 int rc;
7560151b 1958 unsigned long flags;
2d70c103
NB		 1959
1960 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1962 "qla_target(%d): ABTS: Abort Sequence not "
1963 "supported\n", vha->vp_idx);
82de802a
QT		 1964 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1965 false);
2d70c103
NB		 1966 return;
1967 }
1968
1969 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1971 "qla_target(%d): ABTS: Unknown Exchange "
1972 "Address received\n", vha->vp_idx);
82de802a
QT		 1973 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1974 false);
2d70c103
NB		 1975 return;
1976 }
1977
1978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
1979 "qla_target(%d): task abort (s_id=%x:%x:%x, "
1980 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
1981 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
1982 le32_to_cpu(abts->fcp_hdr_le.parameter));
1983
1984 s_id[0] = abts->fcp_hdr_le.s_id[2];
1985 s_id[1] = abts->fcp_hdr_le.s_id[1];
1986 s_id[2] = abts->fcp_hdr_le.s_id[0];
1987
7560151b 1988 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1989 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
1990 if (!sess) {
1991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
1992 "qla_target(%d): task abort for non-existant session\n",
1993 vha->vp_idx);
0e8cd71c 1994 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 1995 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 1996
1997 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1998
2d70c103 1999 if (rc != 0) {
82de802a
QT		 2000 qlt_24xx_send_abts_resp(ha->base_qpair, abts,
2001 FCP_TMF_REJECTED, false);
2d70c103
NB		 2002 }
2003 return;
2004 }
7560151b
QT		 2005 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2006
2d70c103 2007
726b8548 2008 if (sess->deleted) {
82de802a
QT		 2009 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2010 false);
e52a8b45
AP		 2011 return;
2012 }
2013
2d70c103
NB		 2014 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2015 if (rc != 0) {
2016 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2017 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2018 vha->vp_idx, rc);
82de802a
QT		 2019 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2020 false);
2d70c103
NB		 2021 return;
2022 }
2023}
2024
2025/*
2026 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2027 */
82de802a 2028static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2029 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2030{
72fcd4eb 2031 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2032 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2033 struct ctio7_to_24xx *ctio;
33a5fcee 2034 uint16_t temp;
2d70c103
NB		 2035
2036 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2037 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2038 ha, atio, resp_code);
2039
2d70c103 2040
82de802a 2041 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2042 if (ctio == NULL) {
2043 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2044 "qla_target(%d): %s failed: unable to allocate "
2045 "request packet\n", ha->vp_idx, __func__);
2046 return;
2047 }
2048
2049 ctio->entry_type = CTIO_TYPE7;
2050 ctio->entry_count = 1;
2051 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2052 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2053 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2054 ctio->vp_index = ha->vp_idx;
2055 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2056 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2057 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2058 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2059 temp = (atio->u.isp24.attr << 9)|
2060 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2061 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2062 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2063 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2064 ctio->u.status1.scsi_status =
ad950360
BVA		 2065 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2066 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2067 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2068
63163e06
HM		 2069 /* Memory Barrier */
2070 wmb();
8abfa9e2
QT		 2071 if (qpair->reqq_start_iocbs)
2072 qpair->reqq_start_iocbs(qpair);
2073 else
2074 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2075}
2076
2077void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2078{
2079 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2080}
2081EXPORT_SYMBOL(qlt_free_mcmd);
2082
be25152c
QT		 2083/*
2084 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2085 * reacquire
2086 */
8abfa9e2 2087void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2088 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2089{
2090 struct atio_from_isp *atio = &cmd->atio;
2091 struct ctio7_to_24xx *ctio;
2092 uint16_t temp;
8abfa9e2 2093 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2094
2095 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2096 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2097 "sense_key=%02x, asc=%02x, ascq=%02x",
2098 vha, atio, scsi_status, sense_key, asc, ascq);
2099
2100 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2101 if (!ctio) {
2102 ql_dbg(ql_dbg_async, vha, 0x3067,
2103 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2104 vha->host_no, __func__);
2105 goto out;
2106 }
2107
2108 ctio->entry_type = CTIO_TYPE7;
2109 ctio->entry_count = 1;
2110 ctio->handle = QLA_TGT_SKIP_HANDLE;
2111 ctio->nport_handle = cmd->sess->loop_id;
2112 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2113 ctio->vp_index = vha->vp_idx;
2114 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2115 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2116 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2117 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2118 temp = (atio->u.isp24.attr << 9) |
2119 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2120 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2121 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2122 ctio->u.status1.ox_id = cpu_to_le16(temp);
2123 ctio->u.status1.scsi_status =
2124 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2125 ctio->u.status1.response_len = cpu_to_le16(18);
2126 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2127
2128 if (ctio->u.status1.residual != 0)
2129 ctio->u.status1.scsi_status |=
2130 cpu_to_le16(SS_RESIDUAL_UNDER);
2131
2132 /* Response code and sense key */
2133 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2134 (&ctio->u.status1.sense_data)[0]);
2135 /* Additional sense length */
2136 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2137 /* ASC and ASCQ */
2138 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2139 (&ctio->u.status1.sense_data)[3]);
2140
2141 /* Memory Barrier */
2142 wmb();
2143
8abfa9e2
QT		 2144 if (qpair->reqq_start_iocbs)
2145 qpair->reqq_start_iocbs(qpair);
2146 else
2147 qla2x00_start_iocbs(vha, qpair->req);
2148
be25152c
QT		 2149out:
2150 return;
2151}
2152
2d70c103
NB		 2153/* callback from target fabric module code */
2154void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2155{
2156 struct scsi_qla_host *vha = mcmd->sess->vha;
2157 struct qla_hw_data *ha = vha->hw;
2158 unsigned long flags;
82de802a 2159 struct qla_qpair *qpair = mcmd->qpair;
2d70c103
NB		 2160
2161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2162 "TM response mcmd (%p) status %#x state %#x",
2163 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2164
82de802a 2165 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2166
7c3f8fd1 2167 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2168 /*
3bb67df5 2169 * Either the port is not online or this request was from
b6a029e1
AE		 2170 * previous life, just abort the processing.
2171 */
2172 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2173 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2174 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2175 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2176 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2177 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2178 return;
2179 }
2180
726b8548
QT		 2181 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2182 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2183 ELS_LOGO ||
2184 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2185 ELS_PRLO ||
2186 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2187 ELS_TPRLO) {
83548fe2 2188 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2189 "TM response logo %phC status %#x state %#x",
2190 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2191 mcmd->flags);
2192 qlt_schedule_sess_for_deletion_lock(mcmd->sess);
2193 } else {
82de802a
QT		 2194 qlt_send_notify_ack(vha->hw->base_qpair,
2195 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
726b8548
QT		 2196 }
2197 } else {
d7236ac3 2198 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
82de802a 2199 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2d70c103
NB		 2200 mcmd->fc_tm_rsp, false);
2201 else
82de802a 2202 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2203 mcmd->fc_tm_rsp);
2204 }
2205 /*
2206 * Make the callback for ->free_mcmd() to queue_work() and invoke
2207 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2208 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2209 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2210 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2211 * qlt_xmit_tm_rsp() returns here..
2212 */
2213 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2214 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2215}
2216EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2217
2218/* No locks */
2219static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2220{
2221 struct qla_tgt_cmd *cmd = prm->cmd;
2222
2223 BUG_ON(cmd->sg_cnt == 0);
2224
2225 prm->sg = (struct scatterlist *)cmd->sg;
8abfa9e2 2226 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2d70c103
NB		 2227 cmd->sg_cnt, cmd->dma_data_direction);
2228 if (unlikely(prm->seg_cnt == 0))
2229 goto out_err;
2230
2231 prm->cmd->sg_mapped = 1;
2232
f83adb61
QT		 2233 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2234 /*
2235 * If greater than four sg entries then we need to allocate
2236 * the continuation entries
2237 */
b5399f7d 2238 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2239 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2240 QLA_TGT_DATASEGS_PER_CMD_24XX,
2241 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2242 } else {
2243 /* DIF */
2244 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2245 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2246 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2247 prm->tot_dsds = prm->seg_cnt;
2248 } else
2249 prm->tot_dsds = prm->seg_cnt;
2250
2251 if (cmd->prot_sg_cnt) {
2252 prm->prot_sg = cmd->prot_sg;
8abfa9e2 2253 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
f83adb61
QT		 2254 cmd->prot_sg, cmd->prot_sg_cnt,
2255 cmd->dma_data_direction);
2256 if (unlikely(prm->prot_seg_cnt == 0))
2257 goto out_err;
2258
2259 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2260 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2261 /* Dif Bundling not support here */
2262 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2263 cmd->blk_sz);
2264 prm->tot_dsds += prm->prot_seg_cnt;
2265 } else
2266 prm->tot_dsds += prm->prot_seg_cnt;
2267 }
2268 }
2d70c103 2269
2d70c103
NB		 2270 return 0;
2271
2272out_err:
22d84726 2273 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2274 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2275 0, prm->cmd->sg_cnt);
2276 return -1;
2277}
2278
f9b6721a 2279static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2280{
8abfa9e2
QT		 2281 struct qla_hw_data *ha;
2282 struct qla_qpair *qpair;
f9b6721a
JE		 2283 if (!cmd->sg_mapped)
2284 return;
2285
8abfa9e2
QT		 2286 qpair = cmd->qpair;
2287
2288 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2289 cmd->dma_data_direction);
2d70c103 2290 cmd->sg_mapped = 0;
f83adb61
QT		 2291
2292 if (cmd->prot_sg_cnt)
8abfa9e2 2293 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2294 cmd->dma_data_direction);
2295
d5ff0eed
JC		 2296 if (!cmd->ctx)
2297 return;
8abfa9e2 2298 ha = vha->hw;
f83adb61 2299 if (cmd->ctx_dsd_alloced)
d5ff0eed 2300 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2301
d5ff0eed 2302 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2303}
2304
82de802a 2305static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2306 uint32_t req_cnt)
2307{
d63b328f 2308 uint32_t cnt;
82de802a 2309 struct req_que *req = qpair->req;
2d70c103 2310
82de802a 2311 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2312 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2313 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2314
82de802a
QT		 2315 if (req->ring_index < cnt)
2316 req->cnt = cnt - req->ring_index;
2d70c103 2317 else
82de802a 2318 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2319
82de802a 2320 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2321 return -EAGAIN;
2d70c103 2322 }
bc7095a9 2323
82de802a 2324 req->cnt -= req_cnt;
2d70c103
NB		 2325
2326 return 0;
2327}
2328
2329/*
2330 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2331 */
82de802a 2332static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2333{
2334 /* Adjust ring index. */
82de802a
QT		 2335 req->ring_index++;
2336 if (req->ring_index == req->length) {
2337 req->ring_index = 0;
2338 req->ring_ptr = req->ring;
2d70c103 2339 } else {
82de802a 2340 req->ring_ptr++;
2d70c103 2341 }
82de802a 2342 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2343}
2344
2345/* ha->hardware_lock supposed to be held on entry */
82de802a 2346static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2347{
2d70c103 2348 uint32_t h;
c5419e26
QT		 2349 int index;
2350 uint8_t found = 0;
82de802a 2351 struct req_que *req = qpair->req;
c5419e26
QT		 2352
2353 h = req->current_outstanding_cmd;
2d70c103 2354
c5419e26
QT		 2355 for (index = 1; index < req->num_outstanding_cmds; index++) {
2356 h++;
2357 if (h == req->num_outstanding_cmds)
2358 h = 1;
2359
2360 if (h == QLA_TGT_SKIP_HANDLE)
2361 continue;
2362
2363 if (!req->outstanding_cmds[h]) {
2364 found = 1;
2d70c103
NB		 2365 break;
2366 }
c5419e26 2367 }
2d70c103 2368
c5419e26
QT		 2369 if (found) {
2370 req->current_outstanding_cmd = h;
2371 } else {
8abfa9e2
QT		 2372 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2373 "qla_target(%d): Ran out of empty cmd slots\n",
2374 qpair->vha->vp_idx);
c5419e26
QT		 2375 h = QLA_TGT_NULL_HANDLE;
2376 }
2d70c103
NB		 2377
2378 return h;
2379}
2380
2381/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2382static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2383 struct qla_tgt_prm *prm)
2d70c103
NB		 2384{
2385 uint32_t h;
2386 struct ctio7_to_24xx *pkt;
2d70c103 2387 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2388 uint16_t temp;
2d70c103 2389
82de802a 2390 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2391 prm->pkt = pkt;
2392 memset(pkt, 0, sizeof(*pkt));
2393
2394 pkt->entry_type = CTIO_TYPE7;
2395 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2396 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2397
82de802a 2398 h = qlt_make_handle(qpair);
2d70c103
NB		 2399 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2400 /*
2401 * CTIO type 7 from the firmware doesn't provide a way to
2402 * know the initiator's LOOP ID, hence we can't find
2403 * the session and, so, the command.
2404 */
2405 return -EAGAIN;
e326d22a
QT		 2406 } else
2407 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2408
82de802a
QT		 2409 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2410 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2411 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2412 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2413 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2414 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2415 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2416 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2417 temp = atio->u.isp24.attr << 9;
2418 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2419 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2420 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2421 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2422
2d70c103
NB		 2423 return 0;
2424}
2425
2426/*
2427 * ha->hardware_lock supposed to be held on entry. We have already made sure
2428 * that there is sufficient amount of request entries to not drop it.
2429 */
32d29b4c 2430static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2431{
2432 int cnt;
2433 uint32_t *dword_ptr;
2d70c103
NB		 2434
2435 /* Build continuation packets */
2436 while (prm->seg_cnt > 0) {
2437 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2438 (cont_a64_entry_t *)qlt_get_req_pkt(
2439 prm->cmd->qpair->req);
2d70c103
NB		 2440
2441 /*
2442 * Make sure that from cont_pkt64 none of
2443 * 64-bit specific fields used for 32-bit
2444 * addressing. Cast to (cont_entry_t *) for
2445 * that.
2446 */
2447
2448 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2449
2450 cont_pkt64->entry_count = 1;
2451 cont_pkt64->sys_define = 0;
2452
32d29b4c
QT		 2453 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2454 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2d70c103
NB		 2455
2456 /* Load continuation entry data segments */
2457 for (cnt = 0;
b5399f7d 2458 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103
NB		 2459 cnt++, prm->seg_cnt--) {
2460 *dword_ptr++ =
2461 cpu_to_le32(pci_dma_lo32
2462 (sg_dma_address(prm->sg)));
32d29b4c
QT		 2463 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2464 (sg_dma_address(prm->sg)));
2d70c103
NB		 2465 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2466
2d70c103
NB		 2467 prm->sg = sg_next(prm->sg);
2468 }
2469 }
2470}
2471
2472/*
2473 * ha->hardware_lock supposed to be held on entry. We have already made sure
2474 * that there is sufficient amount of request entries to not drop it.
2475 */
32d29b4c 2476static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2477{
2478 int cnt;
2479 uint32_t *dword_ptr;
2d70c103
NB		 2480 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2481
2d70c103
NB		 2482 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2483
2484 /* Setup packet address segment pointer */
2485 dword_ptr = pkt24->u.status0.dseg_0_address;
2486
2487 /* Set total data segment count */
2488 if (prm->seg_cnt)
2489 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2490
2491 if (prm->seg_cnt == 0) {
2492 /* No data transfer */
2493 *dword_ptr++ = 0;
2494 *dword_ptr = 0;
2495 return;
2496 }
2497
2498 /* If scatter gather */
2d70c103
NB		 2499
2500 /* Load command entry data segments */
2501 for (cnt = 0;
b5399f7d 2502 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103
NB		 2503 cnt++, prm->seg_cnt--) {
2504 *dword_ptr++ =
2505 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
32d29b4c
QT		 2506
2507 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2508 sg_dma_address(prm->sg)));
2509
2d70c103
NB		 2510 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2511
2d70c103
NB		 2512 prm->sg = sg_next(prm->sg);
2513 }
2514
32d29b4c 2515 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2516}
2517
2518static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2519{
2520 return cmd->bufflen > 0;
2521}
2522
be25152c
QT		 2523static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2524{
2525 struct qla_tgt_cmd *cmd;
2526 struct scsi_qla_host *vha;
2527
2528 /* asc 0x10=dif error */
2529 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2530 cmd = prm->cmd;
2531 vha = cmd->vha;
2532 /* ASCQ */
2533 switch (prm->sense_buffer[13]) {
2534 case 1:
83548fe2 2535 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2536 "BE detected Guard 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 2:
83548fe2 2542 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2543 "BE detected APP 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 case 3:
83548fe2 2549 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2550 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%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 default:
83548fe2 2556 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2557 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2558 "se_cmd=%p tag[%x]",
2559 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2560 cmd->atio.u.isp24.exchange_addr);
2561 break;
2562 }
83548fe2 2563 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2564 }
2565}
2566
2d70c103
NB		 2567/*
2568 * Called without ha->hardware_lock held
2569 */
2570static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2571 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2572 uint32_t *full_req_cnt)
2573{
2d70c103 2574 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2575 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2576
2d70c103 2577 prm->cmd = cmd;
7c3f8fd1
QT		 2578 prm->tgt = cmd->tgt;
2579 prm->pkt = NULL;
2d70c103
NB		 2580 prm->rq_result = scsi_status;
2581 prm->sense_buffer = &cmd->sense_buffer[0];
2582 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2583 prm->sg = NULL;
2584 prm->seg_cnt = -1;
2585 prm->req_cnt = 1;
7c3f8fd1 2586 prm->residual = 0;
2d70c103 2587 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2588 prm->prot_sg = NULL;
2589 prm->prot_seg_cnt = 0;
2590 prm->tot_dsds = 0;
2d70c103 2591
2d70c103
NB		 2592 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2593 if (qlt_pci_map_calc_cnt(prm) != 0)
2594 return -EAGAIN;
2595 }
2596
2597 *full_req_cnt = prm->req_cnt;
2598
2599 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2600 prm->residual = se_cmd->residual_count;
22d84726 2601 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2602 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2603 prm->residual, se_cmd->tag,
2604 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2605 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2606 prm->rq_result |= SS_RESIDUAL_UNDER;
2607 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2608 prm->residual = se_cmd->residual_count;
22d84726 2609 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2610 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2611 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2612 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2613 prm->rq_result |= SS_RESIDUAL_OVER;
2614 }
2615
2616 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2617 /*
2618 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2619 * ignored in *xmit_response() below
2620 */
2621 if (qlt_has_data(cmd)) {
2622 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2623 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2624 (prm->rq_result != 0))) {
2625 prm->add_status_pkt = 1;
2626 (*full_req_cnt)++;
2627 }
2628 }
2629 }
2630
2d70c103
NB		 2631 return 0;
2632}
2633
7c3f8fd1
QT		 2634static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2635 int sending_sense)
2d70c103 2636{
7c3f8fd1 2637 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2638 return 0;
2639
2640 if (sending_sense)
2641 return cmd->conf_compl_supported;
2642 else
7c3f8fd1
QT		 2643 return cmd->qpair->enable_explicit_conf &&
2644 cmd->conf_compl_supported;
2d70c103
NB		 2645}
2646
2d70c103
NB		 2647static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2648 struct qla_tgt_prm *prm)
2649{
2650 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2651 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2652 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2653 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2654 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2655 CTIO7_FLAGS_EXPLICIT_CONFORM |
2656 CTIO7_FLAGS_CONFORM_REQ);
2657 }
2658 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2659 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2660 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2661 int i;
2662
7c3f8fd1 2663 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2664 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2665 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2666 "Skipping EXPLICIT_CONFORM and "
2667 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2668 "non GOOD status\n");
2669 goto skip_explict_conf;
2670 }
ad950360 2671 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2672 CTIO7_FLAGS_EXPLICIT_CONFORM |
2673 CTIO7_FLAGS_CONFORM_REQ);
2674 }
2675skip_explict_conf:
2676 ctio->u.status1.flags &=
ad950360 2677 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2678 ctio->u.status1.flags |=
ad950360 2679 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2680 ctio->u.status1.scsi_status |=
ad950360 2681 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2682 ctio->u.status1.sense_length =
2683 cpu_to_le16(prm->sense_buffer_len);
2684 for (i = 0; i < prm->sense_buffer_len/4; i++)
2685 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2686 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2687
2688 qlt_print_dif_err(prm);
2689
2d70c103
NB		 2690 } else {
2691 ctio->u.status1.flags &=
ad950360 2692 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2693 ctio->u.status1.flags |=
ad950360 2694 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2695 ctio->u.status1.sense_length = 0;
2696 memset(ctio->u.status1.sense_data, 0,
2697 sizeof(ctio->u.status1.sense_data));
2698 }
2699
2700 /* Sense with len > 24, is it possible ??? */
2701}
2702
f83adb61
QT		 2703static inline int
2704qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2705{
f83adb61
QT		 2706 switch (se_cmd->prot_op) {
2707 case TARGET_PROT_DOUT_INSERT:
2708 case TARGET_PROT_DIN_STRIP:
2709 if (ql2xenablehba_err_chk >= 1)
2710 return 1;
2711 break;
2712 case TARGET_PROT_DOUT_PASS:
2713 case TARGET_PROT_DIN_PASS:
2714 if (ql2xenablehba_err_chk >= 2)
2715 return 1;
2716 break;
2717 case TARGET_PROT_DIN_INSERT:
2718 case TARGET_PROT_DOUT_STRIP:
2719 return 1;
2720 default:
2721 break;
2722 }
2723 return 0;
2724}
2725
be25152c
QT		 2726static inline int
2727qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2728{
2729 switch (se_cmd->prot_op) {
2730 case TARGET_PROT_DIN_INSERT:
2731 case TARGET_PROT_DOUT_INSERT:
2732 case TARGET_PROT_DIN_STRIP:
2733 case TARGET_PROT_DOUT_STRIP:
2734 case TARGET_PROT_DIN_PASS:
2735 case TARGET_PROT_DOUT_PASS:
2736 return 1;
2737 default:
2738 return 0;
2739 }
2740 return 0;
2741}
2742
f83adb61 2743/*
be25152c 2744 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2745 */
be25152c
QT		 2746static void
2747qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2748 uint16_t *pfw_prot_opts)
f83adb61 2749{
be25152c 2750 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2751 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2752 scsi_qla_host_t *vha = cmd->tgt->vha;
2753 struct qla_hw_data *ha = vha->hw;
2754 uint32_t t32 = 0;
f83adb61 2755
be25152c
QT		 2756 /*
2757 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2758 * have been immplemented by TCM, before AppTag is avail.
2759 * Look for modesense_handlers[]
2760 */
c7ee3bd4 2761 ctx->app_tag = 0;
f83adb61
QT		 2762 ctx->app_tag_mask[0] = 0x0;
2763 ctx->app_tag_mask[1] = 0x0;
2764
be25152c
QT		 2765 if (IS_PI_UNINIT_CAPABLE(ha)) {
2766 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2767 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2768 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2769 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2770 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2771 }
2772
2773 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2774
f83adb61
QT		 2775 switch (se_cmd->prot_type) {
2776 case TARGET_DIF_TYPE0_PROT:
2777 /*
be25152c
QT		 2778 * No check for ql2xenablehba_err_chk, as it
2779 * would be an I/O error if hba tag generation
2780 * is not done.
f83adb61
QT		 2781 */
2782 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2783 /* enable ALL bytes of the ref tag */
2784 ctx->ref_tag_mask[0] = 0xff;
2785 ctx->ref_tag_mask[1] = 0xff;
2786 ctx->ref_tag_mask[2] = 0xff;
2787 ctx->ref_tag_mask[3] = 0xff;
2788 break;
f83adb61 2789 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2790 /*
2791 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2792 * REF tag, and 16 bit app tag.
2793 */
2794 ctx->ref_tag = cpu_to_le32(lba);
2795 if (!qla_tgt_ref_mask_check(se_cmd) ||
2796 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2797 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2798 break;
2799 }
2800 /* enable ALL bytes of the ref tag */
2801 ctx->ref_tag_mask[0] = 0xff;
2802 ctx->ref_tag_mask[1] = 0xff;
2803 ctx->ref_tag_mask[2] = 0xff;
2804 ctx->ref_tag_mask[3] = 0xff;
2805 break;
f83adb61 2806 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2807 /*
2808 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2809 * tag has to match LBA in CDB + N
2810 */
2811 ctx->ref_tag = cpu_to_le32(lba);
2812 if (!qla_tgt_ref_mask_check(se_cmd) ||
2813 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2814 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2815 break;
2816 }
2817 /* enable ALL bytes of the ref tag */
2818 ctx->ref_tag_mask[0] = 0xff;
2819 ctx->ref_tag_mask[1] = 0xff;
2820 ctx->ref_tag_mask[2] = 0xff;
2821 ctx->ref_tag_mask[3] = 0xff;
2822 break;
f83adb61 2823 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2824 /* For TYPE 3 protection: 16 bit GUARD only */
2825 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2826 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2827 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2828 break;
f83adb61
QT		 2829 }
2830}
2831
f83adb61 2832static inline int
82de802a 2833qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61
QT		 2834{
2835 uint32_t *cur_dsd;
f83adb61
QT		 2836 uint32_t transfer_length = 0;
2837 uint32_t data_bytes;
2838 uint32_t dif_bytes;
2839 uint8_t bundling = 1;
2840 uint8_t *clr_ptr;
2841 struct crc_context *crc_ctx_pkt = NULL;
2842 struct qla_hw_data *ha;
2843 struct ctio_crc2_to_fw *pkt;
2844 dma_addr_t crc_ctx_dma;
2845 uint16_t fw_prot_opts = 0;
2846 struct qla_tgt_cmd *cmd = prm->cmd;
2847 struct se_cmd *se_cmd = &cmd->se_cmd;
2848 uint32_t h;
2849 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2850 struct qla_tc_param tc;
c7ee3bd4 2851 uint16_t t16;
82de802a 2852 scsi_qla_host_t *vha = cmd->vha;
f83adb61 2853
f83adb61
QT		 2854 ha = vha->hw;
2855
82de802a 2856 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 2857 prm->pkt = pkt;
2858 memset(pkt, 0, sizeof(*pkt));
2859
22d84726 2860 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 2861 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 2862 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 2863 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2864
2865 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2866 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2867 bundling = 0;
2868
2869 /* Compute dif len and adjust data len to incude protection */
2870 data_bytes = cmd->bufflen;
2871 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2872
2873 switch (se_cmd->prot_op) {
2874 case TARGET_PROT_DIN_INSERT:
2875 case TARGET_PROT_DOUT_STRIP:
2876 transfer_length = data_bytes;
be25152c
QT		 2877 if (cmd->prot_sg_cnt)
2878 data_bytes += dif_bytes;
f83adb61 2879 break;
f83adb61
QT		 2880 case TARGET_PROT_DIN_STRIP:
2881 case TARGET_PROT_DOUT_INSERT:
2882 case TARGET_PROT_DIN_PASS:
2883 case TARGET_PROT_DOUT_PASS:
2884 transfer_length = data_bytes + dif_bytes;
2885 break;
f83adb61
QT		 2886 default:
2887 BUG();
2888 break;
2889 }
2890
2891 if (!qlt_hba_err_chk_enabled(se_cmd))
2892 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2893 /* HBA error checking enabled */
2894 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2895 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2896 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2897 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2898 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2899 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2900 }
2901
2902 switch (se_cmd->prot_op) {
2903 case TARGET_PROT_DIN_INSERT:
2904 case TARGET_PROT_DOUT_INSERT:
2905 fw_prot_opts |= PO_MODE_DIF_INSERT;
2906 break;
2907 case TARGET_PROT_DIN_STRIP:
2908 case TARGET_PROT_DOUT_STRIP:
2909 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2910 break;
2911 case TARGET_PROT_DIN_PASS:
2912 case TARGET_PROT_DOUT_PASS:
2913 fw_prot_opts |= PO_MODE_DIF_PASS;
2914 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2915 break;
2916 default:/* Normal Request */
2917 fw_prot_opts |= PO_MODE_DIF_PASS;
2918 break;
2919 }
2920
f83adb61
QT		 2921 /* ---- PKT ---- */
2922 /* Update entry type to indicate Command Type CRC_2 IOCB */
2923 pkt->entry_type = CTIO_CRC2;
2924 pkt->entry_count = 1;
22d84726 2925 pkt->vp_index = cmd->vp_idx;
f83adb61 2926
82de802a 2927 h = qlt_make_handle(qpair);
f83adb61
QT		 2928 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2929 /*
2930 * CTIO type 7 from the firmware doesn't provide a way to
2931 * know the initiator's LOOP ID, hence we can't find
2932 * the session and, so, the command.
2933 */
2934 return -EAGAIN;
2935 } else
82de802a 2936 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 2937
82de802a
QT		 2938 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2939 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 2940 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2941 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2942 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2943 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2944 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2945 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2946
2947 /* silence compile warning */
2948 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2949 pkt->ox_id = cpu_to_le16(t16);
2950
2951 t16 = (atio->u.isp24.attr << 9);
2952 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2953 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2954
2955 /* Set transfer direction */
2956 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2957 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2958 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2959 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2960
f83adb61
QT		 2961 pkt->dseg_count = prm->tot_dsds;
2962 /* Fibre channel byte count */
2963 pkt->transfer_length = cpu_to_le32(transfer_length);
2964
f83adb61
QT		 2965 /* ----- CRC context -------- */
2966
2967 /* Allocate CRC context from global pool */
2968 crc_ctx_pkt = cmd->ctx =
2969 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2970
2971 if (!crc_ctx_pkt)
2972 goto crc_queuing_error;
2973
2974 /* Zero out CTX area. */
2975 clr_ptr = (uint8_t *)crc_ctx_pkt;
2976 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2977
2978 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2979 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
2980
2981 /* Set handle */
2982 crc_ctx_pkt->handle = pkt->handle;
2983
be25152c 2984 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 2985
2986 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
2987 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
2988 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
2989
f83adb61
QT		 2990 if (!bundling) {
2991 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
2992 } else {
2993 /*
2994 * Configure Bundling if we need to fetch interlaving
2995 * protection PCI accesses
2996 */
2997 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
2998 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
2999 crc_ctx_pkt->u.bundling.dseg_count =
3000 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3001 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3002 }
3003
3004 /* Finish the common fields of CRC pkt */
3005 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3006 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3007 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3008 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3009
be25152c
QT		 3010 memset((uint8_t *)&tc, 0 , sizeof(tc));
3011 tc.vha = vha;
3012 tc.blk_sz = cmd->blk_sz;
3013 tc.bufflen = cmd->bufflen;
3014 tc.sg = cmd->sg;
3015 tc.prot_sg = cmd->prot_sg;
3016 tc.ctx = crc_ctx_pkt;
3017 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3018
3019 /* Walks data segments */
ad950360 3020 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3021
3022 if (!bundling && prm->prot_seg_cnt) {
3023 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3024 prm->tot_dsds, &tc))
f83adb61
QT		 3025 goto crc_queuing_error;
3026 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3027 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3028 goto crc_queuing_error;
3029
3030 if (bundling && prm->prot_seg_cnt) {
3031 /* Walks dif segments */
c7ee3bd4 3032 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 3033
3034 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3035 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 3036 prm->prot_seg_cnt, &tc))
f83adb61
QT		 3037 goto crc_queuing_error;
3038 }
3039 return QLA_SUCCESS;
3040
3041crc_queuing_error:
3042 /* Cleanup will be performed by the caller */
82de802a 3043 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3044
3045 return QLA_FUNCTION_FAILED;
3046}
3047
2d70c103
NB		 3048/*
3049 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3050 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3051 */
3052int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3053 uint8_t scsi_status)
3054{
3055 struct scsi_qla_host *vha = cmd->vha;
82de802a 3056 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3057 struct ctio7_to_24xx *pkt;
3058 struct qla_tgt_prm prm;
3059 uint32_t full_req_cnt = 0;
3060 unsigned long flags = 0;
3061 int res;
3062
726b8548 3063 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3064 cmd->state = QLA_TGT_STATE_PROCESSED;
3065 if (cmd->sess->logout_completed)
3066 /* no need to terminate. FW already freed exchange. */
3067 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3068 else
82de802a 3069 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
a6ca8878
AP		 3070 return 0;
3071 }
a6ca8878 3072
22d84726 3073 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3074 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3075 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3076 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3077 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3078
3079 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3080 &full_req_cnt);
3081 if (unlikely(res != 0)) {
2d70c103
NB		 3082 return res;
3083 }
3084
82de802a 3085 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3086
ce1025cd 3087 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3088 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3089 else
60a9eadb 3090 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3091
7c3f8fd1 3092 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3093 /*
3bb67df5 3094 * Either the port is not online or this request was from
b6a029e1
AE		 3095 * previous life, just abort the processing.
3096 */
3097 cmd->state = QLA_TGT_STATE_PROCESSED;
3098 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3099 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3100 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3101 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3102 cmd->reset_count, qpair->chip_reset);
82de802a 3103 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3104 return 0;
3105 }
3106
2d70c103 3107 /* Does F/W have an IOCBs for this request */
82de802a 3108 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3109 if (unlikely(res))
3110 goto out_unmap_unlock;
3111
f83adb61 3112 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3113 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3114 else
82de802a 3115 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3116 if (unlikely(res != 0)) {
82de802a 3117 qpair->req->cnt += full_req_cnt;
2d70c103 3118 goto out_unmap_unlock;
810e30bc 3119 }
2d70c103
NB		 3120
3121 pkt = (struct ctio7_to_24xx *)prm.pkt;
3122
3123 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3124 pkt->u.status0.flags |=
ad950360 3125 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3126 CTIO7_FLAGS_STATUS_MODE_0);
3127
f83adb61 3128 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3129 qlt_load_data_segments(&prm);
2d70c103
NB		 3130
3131 if (prm.add_status_pkt == 0) {
3132 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3133 pkt->u.status0.scsi_status =
3134 cpu_to_le16(prm.rq_result);
3135 pkt->u.status0.residual =
3136 cpu_to_le32(prm.residual);
ad950360 3137 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3138 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3139 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3140 pkt->u.status0.flags |=
ad950360 3141 cpu_to_le16(
2d70c103
NB		 3142 CTIO7_FLAGS_EXPLICIT_CONFORM |
3143 CTIO7_FLAGS_CONFORM_REQ);
3144 }
3145 }
3146
3147 } else {
3148 /*
3149 * We have already made sure that there is sufficient
3150 * amount of request entries to not drop HW lock in
3151 * req_pkt().
3152 */
3153 struct ctio7_to_24xx *ctio =
82de802a
QT		 3154 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3155 qpair->req);
2d70c103 3156
22d84726 3157 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3158 "Building additional status packet 0x%p.\n",
3159 ctio);
2d70c103 3160
f83adb61
QT		 3161 /*
3162 * T10Dif: ctio_crc2_to_fw overlay ontop of
3163 * ctio7_to_24xx
3164 */
2d70c103 3165 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3166 /* reset back to CTIO7 */
2d70c103 3167 ctio->entry_count = 1;
f83adb61 3168 ctio->entry_type = CTIO_TYPE7;
2d70c103 3169 ctio->dseg_count = 0;
ad950360 3170 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3171 CTIO7_FLAGS_DATA_IN);
3172
3173 /* Real finish is ctio_m1's finish */
3174 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3175 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3176 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3177
3178 /* qlt_24xx_init_ctio_to_isp will correct
3179 * all neccessary fields that's part of CTIO7.
3180 * There should be no residual of CTIO-CRC2 data.
3181 */
2d70c103
NB		 3182 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3183 &prm);
2d70c103
NB		 3184 }
3185 } else
3186 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3187
3188
3189 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3190 cmd->cmd_sent_to_fw = 1;
2d70c103 3191
63163e06
HM		 3192 /* Memory Barrier */
3193 wmb();
8abfa9e2
QT		 3194 if (qpair->reqq_start_iocbs)
3195 qpair->reqq_start_iocbs(qpair);
3196 else
3197 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3198 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3199
3200 return 0;
3201
3202out_unmap_unlock:
f9b6721a 3203 qlt_unmap_sg(vha, cmd);
82de802a 3204 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3205
3206 return res;
3207}
3208EXPORT_SYMBOL(qlt_xmit_response);
3209
3210int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3211{
3212 struct ctio7_to_24xx *pkt;
3213 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3214 struct qla_tgt *tgt = cmd->tgt;
3215 struct qla_tgt_prm prm;
82de802a 3216 unsigned long flags = 0;
2d70c103 3217 int res = 0;
82de802a 3218 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3219
3220 memset(&prm, 0, sizeof(prm));
3221 prm.cmd = cmd;
3222 prm.tgt = tgt;
3223 prm.sg = NULL;
3224 prm.req_cnt = 1;
3225
2d70c103
NB		 3226 /* Calculate number of entries and segments required */
3227 if (qlt_pci_map_calc_cnt(&prm) != 0)
3228 return -EAGAIN;
3229
7c3f8fd1 3230 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3231 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3232 /*
3bb67df5 3233 * Either the port is not online or this request was from
b6a029e1
AE		 3234 * previous life, just abort the processing.
3235 */
3236 cmd->state = QLA_TGT_STATE_NEED_DATA;
3237 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3238 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3239 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3240 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3241 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3242 return 0;
3243 }
3244
82de802a 3245 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3246 /* Does F/W have an IOCBs for this request */
82de802a 3247 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3248 if (res != 0)
3249 goto out_unlock_free_unmap;
f83adb61 3250 if (cmd->se_cmd.prot_op)
82de802a 3251 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3252 else
82de802a 3253 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3254
810e30bc 3255 if (unlikely(res != 0)) {
82de802a 3256 qpair->req->cnt += prm.req_cnt;
2d70c103 3257 goto out_unlock_free_unmap;
810e30bc
QT		 3258 }
3259
2d70c103 3260 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3261 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3262 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3263
3264 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3265 qlt_load_data_segments(&prm);
2d70c103
NB		 3266
3267 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3268 cmd->cmd_sent_to_fw = 1;
2d70c103 3269
63163e06
HM		 3270 /* Memory Barrier */
3271 wmb();
8abfa9e2
QT		 3272 if (qpair->reqq_start_iocbs)
3273 qpair->reqq_start_iocbs(qpair);
3274 else
3275 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3276 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3277
3278 return res;
3279
3280out_unlock_free_unmap:
f9b6721a 3281 qlt_unmap_sg(vha, cmd);
82de802a 3282 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3283
3284 return res;
3285}
3286EXPORT_SYMBOL(qlt_rdy_to_xfer);
3287
f83adb61
QT		 3288
3289/*
be25152c 3290 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3291 */
be25152c 3292static void
8abfa9e2 3293qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3294 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3295{
3296 uint8_t *ap = &sts->actual_dif[0];
3297 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3298 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3299 uint8_t scsi_status, sense_key, asc, ascq;
3300 unsigned long flags;
8abfa9e2 3301 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3302
be25152c 3303 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3304
be25152c
QT		 3305 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3306 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3307 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3308
be25152c
QT		 3309 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3310 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3311 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3312
be25152c
QT		 3313 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3314 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3315
be25152c 3316 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3317
be25152c
QT		 3318 /* check appl tag */
3319 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3320 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3321 "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]",
3322 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3323 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3324 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3325 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3326
3327 cmd->dif_err_code = DIF_ERR_APP;
3328 scsi_status = SAM_STAT_CHECK_CONDITION;
3329 sense_key = ABORTED_COMMAND;
3330 asc = 0x10;
3331 ascq = 0x2;
f83adb61
QT		 3332 }
3333
3334 /* check ref tag */
be25152c 3335 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3336 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3337 "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] ",
3338 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3339 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3340 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3341 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3342
3343 cmd->dif_err_code = DIF_ERR_REF;
3344 scsi_status = SAM_STAT_CHECK_CONDITION;
3345 sense_key = ABORTED_COMMAND;
3346 asc = 0x10;
3347 ascq = 0x3;
f83adb61
QT		 3348 goto out;
3349 }
3350
be25152c
QT		 3351 /* check guard */
3352 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3353 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3354 "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]",
3355 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3356 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3357 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3358 cmd->atio.u.isp24.fcp_hdr.ox_id);
3359
be25152c
QT		 3360 cmd->dif_err_code = DIF_ERR_GRD;
3361 scsi_status = SAM_STAT_CHECK_CONDITION;
3362 sense_key = ABORTED_COMMAND;
3363 asc = 0x10;
3364 ascq = 0x1;
f83adb61
QT		 3365 }
3366out:
be25152c
QT		 3367 switch (cmd->state) {
3368 case QLA_TGT_STATE_NEED_DATA:
3369 /* handle_data will load DIF error code */
3370 cmd->state = QLA_TGT_STATE_DATA_IN;
3371 vha->hw->tgt.tgt_ops->handle_data(cmd);
3372 break;
3373 default:
3374 spin_lock_irqsave(&cmd->cmd_lock, flags);
3375 if (cmd->aborted) {
3376 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3377 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3378 break;
3379 }
3380 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3381
8abfa9e2
QT		 3382 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3383 ascq);
be25152c
QT		 3384 /* assume scsi status gets out on the wire.
3385 * Will not wait for completion.
3386 */
3387 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3388 break;
3389 }
3390}
f83adb61 3391
a6ca8878
AP		 3392/* If hardware_lock held on entry, might drop it, then reaquire */
3393/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3394static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3395 struct imm_ntfy_from_isp *ntfy)
3396{
3397 struct nack_to_isp *nack;
3398 struct qla_hw_data *ha = vha->hw;
3399 request_t *pkt;
3400 int ret = 0;
3401
3402 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3403 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3404
ec7193e2 3405 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3406 if (pkt == NULL) {
3407 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3408 "qla_target(%d): %s failed: unable to allocate "
3409 "request packet\n", vha->vp_idx, __func__);
3410 return -ENOMEM;
3411 }
3412
3413 pkt->entry_type = NOTIFY_ACK_TYPE;
3414 pkt->entry_count = 1;
4f060736 3415 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3416
3417 nack = (struct nack_to_isp *)pkt;
3418 nack->ox_id = ntfy->ox_id;
3419
3420 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3421 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3422 nack->u.isp24.flags = ntfy->u.isp24.flags &
3423 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3424 }
3425
3426 /* terminate */
3427 nack->u.isp24.flags |=
3428 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3429
3430 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3431 nack->u.isp24.status = ntfy->u.isp24.status;
3432 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3433 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3434 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3435 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3436 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3437 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3438
3439 qla2x00_start_iocbs(vha, vha->req);
3440 return ret;
3441}
3442
3443static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3444 struct imm_ntfy_from_isp *imm, int ha_locked)
3445{
3446 unsigned long flags = 0;
3447 int rc;
3448
a6ca8878
AP		 3449 if (ha_locked) {
3450 rc = __qlt_send_term_imm_notif(vha, imm);
3451
3452#if 0 /* Todo */
3453 if (rc == -ENOMEM)
3454 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3455#else
3456 if (rc) {
3457 }
a6ca8878
AP		 3458#endif
3459 goto done;
3460 }
3461
3462 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3463 rc = __qlt_send_term_imm_notif(vha, imm);
3464
3465#if 0 /* Todo */
3466 if (rc == -ENOMEM)
3467 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3468#endif
3469
3470done:
3471 if (!ha_locked)
3472 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3473}
3474
83548fe2
QT		 3475/*
3476 * If hardware_lock held on entry, might drop it, then reaquire
3477 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3478 */
82de802a 3479static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3480 struct qla_tgt_cmd *cmd,
3481 struct atio_from_isp *atio)
3482{
82de802a 3483 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3484 struct ctio7_to_24xx *ctio24;
3485 struct qla_hw_data *ha = vha->hw;
3486 request_t *pkt;
3487 int ret = 0;
33a5fcee 3488 uint16_t temp;
2d70c103 3489
83548fe2 3490 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3491
72fcd4eb
QT		 3492 if (cmd)
3493 vha = cmd->vha;
3494
82de802a 3495 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3496 if (pkt == NULL) {
3497 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3498 "qla_target(%d): %s failed: unable to allocate "
3499 "request packet\n", vha->vp_idx, __func__);
3500 return -ENOMEM;
3501 }
3502
3503 if (cmd != NULL) {
3504 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3505 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3506 "qla_target(%d): Terminating cmd %p with "
3507 "incorrect state %d\n", vha->vp_idx, cmd,
3508 cmd->state);
3509 } else
3510 ret = 1;
3511 }
3512
60a9eadb 3513 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3514 pkt->entry_count = 1;
3515 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3516
3517 ctio24 = (struct ctio7_to_24xx *)pkt;
3518 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3519 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3520 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3521 ctio24->vp_index = vha->vp_idx;
3522 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3523 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3524 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3525 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3526 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3527 CTIO7_FLAGS_TERMINATE;
3528 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3529 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3530 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3531
3532 /* Most likely, it isn't needed */
3533 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3534 &atio->u.isp24.fcp_cmnd.add_cdb[
3535 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3536 if (ctio24->u.status1.residual != 0)
3537 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3538
63163e06
HM		 3539 /* Memory Barrier */
3540 wmb();
8abfa9e2
QT		 3541 if (qpair->reqq_start_iocbs)
3542 qpair->reqq_start_iocbs(qpair);
3543 else
3544 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3545 return ret;
3546}
3547
82de802a 3548static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3549 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3550 int ul_abort)
2d70c103 3551{
82de802a 3552 struct scsi_qla_host *vha;
6bc85dd5 3553 unsigned long flags = 0;
2d70c103
NB		 3554 int rc;
3555
82de802a
QT		 3556 /* why use different vha? NPIV */
3557 if (cmd)
3558 vha = cmd->vha;
3559 else
3560 vha = qpair->vha;
2d70c103
NB		 3561
3562 if (ha_locked) {
82de802a 3563 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3564 if (rc == -ENOMEM)
3565 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3566 goto done;
3567 }
82de802a
QT		 3568 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3569 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3570 if (rc == -ENOMEM)
3571 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3572
2d70c103 3573done:
a07100e0 3574 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3575 if (cmd->sg_mapped)
3576 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3577 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3578 }
6bc85dd5
HM		 3579
3580 if (!ha_locked)
82de802a 3581 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3582
7b898542 3583 return;
2d70c103
NB		 3584}
3585
33e79977
QT		 3586static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3587{
3588 struct list_head free_list;
3589 struct qla_tgt_cmd *cmd, *tcmd;
3590
3591 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3592 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3593
3594 cmd = tcmd = NULL;
3595 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3596 INIT_LIST_HEAD(&free_list);
3597 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3598
3599 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3600 list_del(&cmd->cmd_list);
3601 /* This cmd was never sent to TCM. There is no need
3602 * to schedule free or call free_cmd
3603 */
3604 qlt_free_cmd(cmd);
3605 vha->hw->tgt.num_qfull_cmds_alloc--;
3606 }
3607 }
3608 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3609}
3610
3611static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3612{
3613 uint32_t total_leaked;
3614
3615 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3616
3617 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3618 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3619
3620 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3621 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3622 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3623
3624 if (IS_P3P_TYPE(vha->hw))
3625 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3626 else
3627 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3628 qla2xxx_wake_dpc(vha);
3629 }
3630
3631}
3632
a07100e0 3633int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3634{
3635 struct qla_tgt *tgt = cmd->tgt;
3636 struct scsi_qla_host *vha = tgt->vha;
3637 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3638 unsigned long flags;
7359df25
AP		 3639
3640 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3641 "qla_target(%d): terminating exchange for aborted cmd=%p "
3642 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3643 se_cmd->tag);
3644
a07100e0
QT		 3645 spin_lock_irqsave(&cmd->cmd_lock, flags);
3646 if (cmd->aborted) {
3647 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3648 /*
3649 * It's normal to see 2 calls in this path:
3650 * 1) XFER Rdy completion + CMD_T_ABORT
3651 * 2) TCM TMR - drain_state_list
3652 */
83548fe2
QT		 3653 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3654 "multiple abort. %p transport_state %x, t_state %x, "
3655 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3656 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3657 return EIO;
3658 }
193b50b9 3659 cmd->aborted = 1;
1eb42f96 3660 cmd->trc_flags |= TRC_ABORT;
a07100e0 3661 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3662
82de802a 3663 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3664 return 0;
7359df25
AP		 3665}
3666EXPORT_SYMBOL(qlt_abort_cmd);
3667
2d70c103
NB		 3668void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3669{
5d964837 3670 struct fc_port *sess = cmd->sess;
51a07f84 3671
f83adb61
QT		 3672 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3673 "%s: se_cmd[%p] ox_id %04x\n",
3674 __func__, &cmd->se_cmd,
3675 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3676
e07f8f65
SK		 3677 BUG_ON(cmd->cmd_in_wq);
3678
a07100e0
QT		 3679 if (cmd->sg_mapped)
3680 qlt_unmap_sg(cmd->vha, cmd);
3681
33e79977
QT		 3682 if (!cmd->q_full)
3683 qlt_decr_num_pend_cmds(cmd->vha);
3684
f83adb61 3685 BUG_ON(cmd->sg_mapped);
e07f8f65 3686 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3687 if (unlikely(cmd->free_sg))
3688 kfree(cmd->sg);
51a07f84
NB		 3689
3690 if (!sess || !sess->se_sess) {
3691 WARN_ON(1);
3692 return;
3693 }
e07f8f65 3694 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3695 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3696}
3697EXPORT_SYMBOL(qlt_free_cmd);
3698
2d70c103
NB		 3699/*
3700 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3701 */
82de802a 3702static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3703 struct qla_tgt_cmd *cmd, uint32_t status)
3704{
3705 int term = 0;
82de802a 3706 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3707
be25152c 3708 if (cmd->se_cmd.prot_op)
83548fe2 3709 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3710 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3711 "se_cmd=%p tag[%x] op %#x/%s",
3712 cmd->lba, cmd->lba,
3713 cmd->num_blks, &cmd->se_cmd,
3714 cmd->atio.u.isp24.exchange_addr,
3715 cmd->se_cmd.prot_op,
3716 prot_op_str(cmd->se_cmd.prot_op));
3717
2d70c103
NB		 3718 if (ctio != NULL) {
3719 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3720 term = !(c->flags &
ad950360 3721 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3722 } else
3723 term = 1;
3724
3725 if (term)
82de802a 3726 qlt_term_ctio_exchange(qpair, ctio, cmd, status);
2d70c103
NB		 3727
3728 return term;
3729}
3730
2d70c103
NB		 3731
3732/* ha->hardware_lock supposed to be held on entry */
3733static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3734 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103
NB		 3735{
3736 struct qla_tgt_cmd *cmd = NULL;
82de802a
QT		 3737 struct req_que *req;
3738 int qid = GET_QID(handle);
3739 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3740
82de802a
QT		 3741 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3742 return NULL;
2d70c103 3743
82de802a
QT		 3744 if (qid == rsp->req->id) {
3745 req = rsp->req;
3746 } else if (vha->hw->req_q_map[qid]) {
3747 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3748 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3749 vha->vp_idx, rsp->id, handle);
3750 req = vha->hw->req_q_map[qid];
3751 } else {
3752 return NULL;
3753 }
667024a3 3754
82de802a 3755 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3756
82de802a 3757 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3758 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3759 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3760 "qla_target(%d): Wrong handle %x received\n",
3761 vha->vp_idx, handle);
3762 return NULL;
3763 }
82de802a
QT		 3764
3765 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3766 if (unlikely(cmd == NULL)) {
c5419e26 3767 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3768 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3769 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3770 return NULL;
3771 }
82de802a 3772 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3773 } else if (ctio != NULL) {
3774 /* We can't get loop ID from CTIO7 */
3775 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3776 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3777 "support NULL handles\n", vha->vp_idx);
3778 return NULL;
3779 }
3780
3781 return cmd;
3782}
3783
c0cb4496 3784/* hardware_lock should be held by caller. */
c5419e26 3785void
c0cb4496
AE		 3786qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3787{
3788 struct qla_hw_data *ha = vha->hw;
c0cb4496
AE		 3789
3790 if (cmd->sg_mapped)
3791 qlt_unmap_sg(vha, cmd);
3792
c0cb4496
AE		 3793 /* TODO: fix debug message type and ids. */
3794 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3795 ql_dbg(ql_dbg_io, vha, 0xff00,
82de802a 3796 "HOST-ABORT: state=PROCESSED.\n");
c0cb4496
AE		 3797 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3798 cmd->write_data_transferred = 0;
3799 cmd->state = QLA_TGT_STATE_DATA_IN;
3800
3801 ql_dbg(ql_dbg_io, vha, 0xff01,
82de802a 3802 "HOST-ABORT: state=DATA_IN.\n");
c0cb4496
AE		 3803
3804 ha->tgt.tgt_ops->handle_data(cmd);
3805 return;
c0cb4496
AE		 3806 } else {
3807 ql_dbg(ql_dbg_io, vha, 0xff03,
82de802a 3808 "HOST-ABORT: state=BAD(%d).\n",
c0cb4496
AE		 3809 cmd->state);
3810 dump_stack();
3811 }
3812
1eb42f96 3813 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3814 ha->tgt.tgt_ops->free_cmd(cmd);
3815}
3816
2d70c103
NB		 3817/*
3818 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3819 */
82de802a
QT		 3820static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3821 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3822{
3823 struct qla_hw_data *ha = vha->hw;
3824 struct se_cmd *se_cmd;
2d70c103 3825 struct qla_tgt_cmd *cmd;
82de802a 3826 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3827
2d70c103
NB		 3828 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3829 /* That could happen only in case of an error/reset/abort */
3830 if (status != CTIO_SUCCESS) {
3831 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3832 "Intermediate CTIO received"
3833 " (status %x)\n", status);
3834 }
3835 return;
3836 }
3837
82de802a 3838 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3839 if (cmd == NULL)
2d70c103 3840 return;
092e1dc3 3841
2d70c103 3842 se_cmd = &cmd->se_cmd;
d564a372 3843 cmd->cmd_sent_to_fw = 0;
2d70c103 3844
f9b6721a 3845 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3846
3847 if (unlikely(status != CTIO_SUCCESS)) {
3848 switch (status & 0xFFFF) {
3849 case CTIO_LIP_RESET:
3850 case CTIO_TARGET_RESET:
3851 case CTIO_ABORTED:
7b898542 3852 /* driver request abort via Terminate exchange */
2d70c103
NB		 3853 case CTIO_TIMEOUT:
3854 case CTIO_INVALID_RX_ID:
3855 /* They are OK */
3856 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3857 "qla_target(%d): CTIO with "
3858 "status %#x received, state %x, se_cmd %p, "
3859 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3860 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3861 status, cmd->state, se_cmd);
3862 break;
3863
3864 case CTIO_PORT_LOGGED_OUT:
3865 case CTIO_PORT_UNAVAILABLE:
71cdc079 3866 {
dacb5822
HM		 3867 int logged_out =
3868 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3869
2d70c103 3870 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3871 "qla_target(%d): CTIO with %s status %x "
2d70c103 3872 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3873 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3874 status, cmd->state, se_cmd);
2d70c103 3875
71cdc079
AP		 3876 if (logged_out && cmd->sess) {
3877 /*
3878 * Session is already logged out, but we need
3879 * to notify initiator, who's not aware of this
3880 */
3881 cmd->sess->logout_on_delete = 0;
3882 cmd->sess->send_els_logo = 1;
83548fe2 3883 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3884 "%s %d %8phC post del sess\n",
3885 __func__, __LINE__, cmd->sess->port_name);
3886
3887 qlt_schedule_sess_for_deletion_lock(cmd->sess);
71cdc079
AP		 3888 }
3889 break;
3890 }
f83adb61
QT		 3891 case CTIO_DIF_ERROR: {
3892 struct ctio_crc_from_fw *crc =
3893 (struct ctio_crc_from_fw *)ctio;
3894 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3895 "qla_target(%d): CTIO with DIF_ERROR status %x "
3896 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3897 "expect_dif[0x%llx]\n",
f83adb61
QT		 3898 vha->vp_idx, status, cmd->state, se_cmd,
3899 *((u64 *)&crc->actual_dif[0]),
3900 *((u64 *)&crc->expected_dif[0]));
3901
8abfa9e2 3902 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 3903 return;
f83adb61 3904 }
2d70c103
NB		 3905 default:
3906 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3907 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3908 vha->vp_idx, status, cmd->state, se_cmd);
3909 break;
3910 }
3911
7b898542 3912
193b50b9 3913 /* "cmd->aborted" means
7b898542
QT		 3914 * cmd is already aborted/terminated, we don't
3915 * need to terminate again. The exchange is already
3916 * cleaned up/freed at FW level. Just cleanup at driver
3917 * level.
3918 */
3919 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3920 (!cmd->aborted)) {
1eb42f96 3921 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 3922 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 3923 return;
7b898542 3924 }
2d70c103
NB		 3925 }
3926
3927 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3928 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3929 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3930 cmd->state = QLA_TGT_STATE_DATA_IN;
3931
52c82823 3932 if (status == CTIO_SUCCESS)
2d70c103
NB		 3933 cmd->write_data_transferred = 1;
3934
2d70c103
NB		 3935 ha->tgt.tgt_ops->handle_data(cmd);
3936 return;
193b50b9 3937 } else if (cmd->aborted) {
1eb42f96 3938 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3940 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3941 } else {
1eb42f96 3942 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3943 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3944 "qla_target(%d): A command in state (%d) should "
3945 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3946 }
3947
7b898542 3948 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3949 !cmd->aborted) {
2d70c103
NB		 3950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3951 dump_stack();
3952 }
3953
3954 ha->tgt.tgt_ops->free_cmd(cmd);
3955}
3956
2d70c103
NB		 3957static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3958 uint8_t task_codes)
3959{
3960 int fcp_task_attr;
3961
3962 switch (task_codes) {
3963 case ATIO_SIMPLE_QUEUE:
68d81f40 3964 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3965 break;
3966 case ATIO_HEAD_OF_QUEUE:
68d81f40 3967 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3968 break;
3969 case ATIO_ORDERED_QUEUE:
68d81f40 3970 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3971 break;
3972 case ATIO_ACA_QUEUE:
68d81f40 3973 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3974 break;
3975 case ATIO_UNTAGGED:
68d81f40 3976 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3977 break;
3978 default:
3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
3980 "qla_target: unknown task code %x, use ORDERED instead\n",
3981 task_codes);
68d81f40 3982 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3983 break;
3984 }
3985
3986 return fcp_task_attr;
3987}
3988
5d964837 3989static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 3990 uint8_t *);
3991/*
3992 * Process context for I/O path into tcm_qla2xxx code
3993 */
51a07f84 3994static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 3995{
2d70c103
NB		 3996 scsi_qla_host_t *vha = cmd->vha;
3997 struct qla_hw_data *ha = vha->hw;
5d964837 3998 struct fc_port *sess = cmd->sess;
2d70c103
NB		 3999 struct atio_from_isp *atio = &cmd->atio;
4000 unsigned char *cdb;
4001 unsigned long flags;
4002 uint32_t data_length;
4003 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4004 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4005
e07f8f65 4006 cmd->cmd_in_wq = 0;
1eb42f96 4007 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4008
193b50b9 4009 if (cmd->aborted) {
8b2f5ff3
SN		 4010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4011 "cmd with tag %u is aborted\n",
4012 cmd->atio.u.isp24.exchange_addr);
4013 goto out_term;
4014 }
4015
a07100e0 4016 spin_lock_init(&cmd->cmd_lock);
2d70c103 4017 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4018 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4019
4020 if (atio->u.isp24.fcp_cmnd.rddata &&
4021 atio->u.isp24.fcp_cmnd.wrdata) {
4022 bidi = 1;
4023 data_dir = DMA_TO_DEVICE;
4024 } else if (atio->u.isp24.fcp_cmnd.rddata)
4025 data_dir = DMA_FROM_DEVICE;
4026 else if (atio->u.isp24.fcp_cmnd.wrdata)
4027 data_dir = DMA_TO_DEVICE;
4028 else
4029 data_dir = DMA_NONE;
4030
4031 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4032 atio->u.isp24.fcp_cmnd.task_attr);
4033 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4034 &atio->u.isp24.fcp_cmnd.add_cdb[
4035 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4036
51a07f84
NB		 4037 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4038 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4039 if (ret != 0)
4040 goto out_term;
4041 /*
4042 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4043 */
7560151b 4044 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4045 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4046 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4047 return;
4048
4049out_term:
667024a3 4050 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4051 /*
fae9eaf8
RD		 4052 * cmd has not sent to target yet, so pass NULL as the second
4053 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4054 */
1eb42f96 4055 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4056 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4057 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4058
4059 qlt_decr_num_pend_cmds(vha);
51a07f84 4060 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
82de802a 4061 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b
QT		 4062
4063 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4064 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4065 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4066}
4067
4068static void qlt_do_work(struct work_struct *work)
4069{
4070 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4071 scsi_qla_host_t *vha = cmd->vha;
4072 unsigned long flags;
4073
4074 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4075 list_del(&cmd->cmd_list);
4076 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4077
4078 __qlt_do_work(cmd);
4079}
4080
09620eeb
QT		 4081void qlt_clr_qp_table(struct scsi_qla_host *vha)
4082{
4083 unsigned long flags;
4084 struct qla_hw_data *ha = vha->hw;
4085 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4086 void *node;
4087 u64 key = 0;
4088
4089 ql_log(ql_log_info, vha, 0x706c,
4090 "User update Number of Active Qpairs %d\n",
4091 ha->tgt.num_act_qpairs);
4092
4093 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4094
4095 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4096 btree_remove64(&tgt->lun_qpair_map, key);
4097
4098 ha->base_qpair->lun_cnt = 0;
4099 for (key = 0; key < ha->max_qpairs; key++)
4100 if (ha->queue_pair_map[key])
4101 ha->queue_pair_map[key]->lun_cnt = 0;
4102
4103 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4104}
4105
e326d22a
QT		 4106static void qlt_assign_qpair(struct scsi_qla_host *vha,
4107 struct qla_tgt_cmd *cmd)
4108{
4109 struct qla_qpair *qpair, *qp;
4110 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4111 struct qla_qpair_hint *h;
4112
4113 if (vha->flags.qpairs_available) {
4114 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4115 if (unlikely(!h)) {
4116 /* spread lun to qpair ratio evently */
4117 int lcnt = 0, rc;
4118 struct scsi_qla_host *base_vha =
4119 pci_get_drvdata(vha->hw->pdev);
4120
4121 qpair = vha->hw->base_qpair;
4122 if (qpair->lun_cnt == 0) {
4123 qpair->lun_cnt++;
4124 h = qla_qpair_to_hint(tgt, qpair);
4125 BUG_ON(!h);
4126 rc = btree_insert64(&tgt->lun_qpair_map,
4127 cmd->unpacked_lun, h, GFP_ATOMIC);
4128 if (rc) {
4129 qpair->lun_cnt--;
4130 ql_log(ql_log_info, vha, 0xd037,
4131 "Unable to insert lun %llx into lun_qpair_map\n",
4132 cmd->unpacked_lun);
4133 }
4134 goto out;
4135 } else {
4136 lcnt = qpair->lun_cnt;
4137 }
4138
4139 h = NULL;
4140 list_for_each_entry(qp, &base_vha->qp_list,
4141 qp_list_elem) {
4142 if (qp->lun_cnt == 0) {
4143 qp->lun_cnt++;
4144 h = qla_qpair_to_hint(tgt, qp);
4145 BUG_ON(!h);
4146 rc = btree_insert64(&tgt->lun_qpair_map,
4147 cmd->unpacked_lun, h, GFP_ATOMIC);
4148 if (rc) {
4149 qp->lun_cnt--;
4150 ql_log(ql_log_info, vha, 0xd038,
4151 "Unable to insert lun %llx into lun_qpair_map\n",
4152 cmd->unpacked_lun);
4153 }
4154 qpair = qp;
4155 goto out;
4156 } else {
4157 if (qp->lun_cnt < lcnt) {
4158 lcnt = qp->lun_cnt;
4159 qpair = qp;
4160 continue;
4161 }
4162 }
4163 }
4164 BUG_ON(!qpair);
4165 qpair->lun_cnt++;
4166 h = qla_qpair_to_hint(tgt, qpair);
4167 BUG_ON(!h);
4168 rc = btree_insert64(&tgt->lun_qpair_map,
4169 cmd->unpacked_lun, h, GFP_ATOMIC);
4170 if (rc) {
4171 qpair->lun_cnt--;
4172 ql_log(ql_log_info, vha, 0xd039,
4173 "Unable to insert lun %llx into lun_qpair_map\n",
4174 cmd->unpacked_lun);
4175 }
4176 }
4177 } else {
4178 h = &tgt->qphints[0];
4179 }
4180out:
4181 cmd->qpair = h->qpair;
4182 cmd->se_cmd.cpuid = h->cpuid;
4183}
4184
51a07f84 4185static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4186 struct fc_port *sess,
51a07f84
NB		 4187 struct atio_from_isp *atio)
4188{
4189 struct se_session *se_sess = sess->se_sess;
4190 struct qla_tgt_cmd *cmd;
4191 int tag;
4192
4193 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4194 if (tag < 0)
4195 return NULL;
4196
4197 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4198 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4199 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4200 memcpy(&cmd->atio, atio, sizeof(*atio));
4201 cmd->state = QLA_TGT_STATE_NEW;
4202 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4203 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4204 cmd->vha = vha;
4205 cmd->se_cmd.map_tag = tag;
4206 cmd->sess = sess;
4207 cmd->loop_id = sess->loop_id;
4208 cmd->conf_compl_supported = sess->conf_compl_supported;
4209
1eb42f96 4210 cmd->trc_flags = 0;
9fce1254
KS		 4211 cmd->jiffies_at_alloc = get_jiffies_64();
4212
e326d22a
QT		 4213 cmd->unpacked_lun = scsilun_to_int(
4214 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4215 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4216 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4217 cmd->vp_idx = vha->vp_idx;
9fce1254 4218
51a07f84
NB		 4219 return cmd;
4220}
4221
51a07f84
NB		 4222static void qlt_create_sess_from_atio(struct work_struct *work)
4223{
4224 struct qla_tgt_sess_op *op = container_of(work,
4225 struct qla_tgt_sess_op, work);
4226 scsi_qla_host_t *vha = op->vha;
4227 struct qla_hw_data *ha = vha->hw;
5d964837 4228 struct fc_port *sess;
51a07f84
NB		 4229 struct qla_tgt_cmd *cmd;
4230 unsigned long flags;
4231 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4232
8b2f5ff3
SN		 4233 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4234 list_del(&op->cmd_list);
4235 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4236
4237 if (op->aborted) {
4238 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4239 "sess_op with tag %u is aborted\n",
4240 op->atio.u.isp24.exchange_addr);
4241 goto out_term;
4242 }
4243
51a07f84 4244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 4245 "qla_target(%d): Unable to find wwn login"
4246 " (s_id %x:%x:%x), trying to create it manually\n",
4247 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 4248
4249 if (op->atio.u.raw.entry_count > 1) {
4250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 4251 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 4252 goto out_term;
4253 }
4254
51a07f84
NB		 4255 sess = qlt_make_local_sess(vha, s_id);
4256 /* sess has an extra creation ref. */
51a07f84
NB		 4257
4258 if (!sess)
4259 goto out_term;
4260 /*
4261 * Now obtain a pre-allocated session tag using the original op->atio
4262 * packet header, and dispatch into __qlt_do_work() using the existing
4263 * process context.
4264 */
4265 cmd = qlt_get_tag(vha, sess, &op->atio);
4266 if (!cmd) {
82de802a
QT		 4267 struct qla_qpair *qpair = ha->base_qpair;
4268
4269 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4270 qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY);
4271 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4272
4273 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4274 ha->tgt.tgt_ops->put_sess(sess);
82de802a 4275 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4276 kfree(op);
4277 return;
4278 }
726b8548 4279
51a07f84 4280 /*
e3dc0e31 4281 * __qlt_do_work() will call qlt_put_sess() to release
51a07f84
NB		 4282 * the extra reference taken above by qlt_make_local_sess()
4283 */
4284 __qlt_do_work(cmd);
4285 kfree(op);
4286 return;
51a07f84 4287out_term:
82de802a 4288 qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0);
51a07f84 4289 kfree(op);
2d70c103
NB		 4290}
4291
4292/* ha->hardware_lock supposed to be held on entry */
4293static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4294 struct atio_from_isp *atio)
4295{
51a07f84 4296 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4297 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4298 struct fc_port *sess;
2d70c103 4299 struct qla_tgt_cmd *cmd;
5d964837 4300 unsigned long flags;
2d70c103
NB		 4301
4302 if (unlikely(tgt->tgt_stop)) {
667024a3 4303 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 4304 "New command while device %p is shutting down\n", tgt);
4305 return -EFAULT;
4306 }
4307
51a07f84
NB		 4308 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4309 if (unlikely(!sess)) {
4310 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4311 GFP_ATOMIC);
4312 if (!op)
4313 return -ENOMEM;
4314
4315 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 4316 op->vha = vha;
8b2f5ff3 4317
8b631d87 4318 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4319 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
8b631d87 4320 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4321
51a07f84
NB		 4322 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4323 queue_work(qla_tgt_wq, &op->work);
4324 return 0;
4325 }
e52a8b45
AP		 4326
4327 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4328 * session deletion, but it's still in sess_del_work wq */
726b8548 4329 if (sess->deleted) {
83548fe2 4330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4331 "New command while old session %p is being deleted\n",
4332 sess);
4333 return -EFAULT;
4334 }
4335
51a07f84
NB		 4336 /*
4337 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4338 */
726b8548 4339 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4340 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4341 "%s: kref_get fail, %8phC oxid %x \n",
4342 __func__, sess->port_name,
4343 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4344 return -EFAULT;
4345 }
51a07f84
NB		 4346
4347 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4348 if (!cmd) {
667024a3 4349 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4350 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4351 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4352 ha->tgt.tgt_ops->put_sess(sess);
4353 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4354 return -ENOMEM;
4355 }
4356
e07f8f65 4357 cmd->cmd_in_wq = 1;
1eb42f96 4358 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4359
726b8548 4360 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4361 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4362 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4363
2d70c103 4364 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4365 if (vha->flags.qpairs_available) {
4366 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4367 } else if (ha->msix_count) {
fb3269ba
QT		 4368 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4369 queue_work_on(smp_processor_id(), qla_tgt_wq,
4370 &cmd->work);
4371 else
4372 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4373 &cmd->work);
4374 } else {
4375 queue_work(qla_tgt_wq, &cmd->work);
4376 }
2d70c103 4377
82de802a 4378 return 0;
2d70c103
NB		 4379}
4380
4381/* ha->hardware_lock supposed to be held on entry */
5d964837 4382static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4383 int fn, void *iocb, int flags)
4384{
4385 struct scsi_qla_host *vha = sess->vha;
4386 struct qla_hw_data *ha = vha->hw;
4387 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4388 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4389 int res;
2d70c103
NB		 4390
4391 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4392 if (!mcmd) {
4393 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4394 "qla_target(%d): Allocation of management "
4395 "command failed, some commands and their data could "
4396 "leak\n", vha->vp_idx);
4397 return -ENOMEM;
4398 }
4399 memset(mcmd, 0, sizeof(*mcmd));
4400 mcmd->sess = sess;
4401
4402 if (iocb) {
4403 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4404 sizeof(mcmd->orig_iocb.imm_ntfy));
4405 }
4406 mcmd->tmr_func = fn;
4407 mcmd->flags = flags;
7c3f8fd1 4408 mcmd->reset_count = ha->base_qpair->chip_reset;
82de802a 4409 mcmd->qpair = ha->base_qpair;
72fcd4eb 4410 mcmd->vha = vha;
2d70c103
NB		 4411
4412 switch (fn) {
2d70c103 4413 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4414 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4415 break;
2d70c103
NB		 4416 }
4417
be92fc3f 4418 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4419 if (res != 0) {
4420 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4421 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4422 sess->vha->vp_idx, res);
4423 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4424 return -EFAULT;
4425 }
4426
4427 return 0;
4428}
4429
4430/* ha->hardware_lock supposed to be held on entry */
4431static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4432{
4433 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4434 struct qla_hw_data *ha = vha->hw;
4435 struct qla_tgt *tgt;
5d964837 4436 struct fc_port *sess;
f775bd14 4437 u64 unpacked_lun;
52c82823 4438 int fn;
7560151b 4439 unsigned long flags;
2d70c103 4440
0e8cd71c 4441 tgt = vha->vha_tgt.qla_tgt;
2d70c103 4442
2d70c103 4443 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4444
4445 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4446 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4447 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4448 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4449
f775bd14
QT		 4450 unpacked_lun =
4451 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 4452
4453 if (!sess) {
4454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4455 "qla_target(%d): task mgmt fn 0x%x for "
4456 "non-existant session\n", vha->vp_idx, fn);
4457 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4458 sizeof(struct atio_from_isp));
4459 }
4460
726b8548 4461 if (sess->deleted)
e52a8b45
AP		 4462 return -EFAULT;
4463
2d70c103
NB		 4464 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4465}
4466
4467/* ha->hardware_lock supposed to be held on entry */
4468static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4469 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4470{
4471 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4472 struct qla_hw_data *ha = vha->hw;
4473 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4474 u64 unpacked_lun;
2d70c103
NB		 4475 int rc;
4476
4477 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4478 if (mcmd == NULL) {
4479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4480 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4481 vha->vp_idx, __func__);
4482 return -ENOMEM;
4483 }
4484 memset(mcmd, 0, sizeof(*mcmd));
4485
4486 mcmd->sess = sess;
4487 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4488 sizeof(mcmd->orig_iocb.imm_ntfy));
4489
f775bd14
QT		 4490 unpacked_lun =
4491 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4492 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4493 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4494 mcmd->qpair = ha->base_qpair;
2d70c103 4495
be92fc3f 4496 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4497 le16_to_cpu(iocb->u.isp2x.seq_id));
4498 if (rc != 0) {
4499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4500 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4501 vha->vp_idx, rc);
4502 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4503 return -EFAULT;
4504 }
4505
4506 return 0;
4507}
4508
4509/* ha->hardware_lock supposed to be held on entry */
4510static int qlt_abort_task(struct scsi_qla_host *vha,
4511 struct imm_ntfy_from_isp *iocb)
4512{
4513 struct qla_hw_data *ha = vha->hw;
5d964837 4514 struct fc_port *sess;
2d70c103 4515 int loop_id;
7560151b 4516 unsigned long flags;
2d70c103
NB		 4517
4518 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4519
7560151b 4520 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4521 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4522 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4523
2d70c103
NB		 4524 if (sess == NULL) {
4525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4526 "qla_target(%d): task abort for unexisting "
4527 "session\n", vha->vp_idx);
0e8cd71c 4528 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4529 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4530 }
4531
4532 return __qlt_abort_task(vha, iocb, sess);
4533}
4534
a6ca8878
AP		 4535void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4536{
726b8548
QT		 4537 if (rc != MBS_COMMAND_COMPLETE) {
4538 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4539 "%s: se_sess %p / sess %p from"
4540 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4541 " LOGO failed: %#x\n",
4542 __func__,
4543 fcport->se_sess,
4544 fcport,
4545 fcport->port_name, fcport->loop_id,
4546 fcport->d_id.b.domain, fcport->d_id.b.area,
4547 fcport->d_id.b.al_pa, rc);
4548 }
4549
4550 fcport->logout_completed = 1;
a6ca8878
AP		 4551}
4552
a6ca8878
AP		 4553/*
4554* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4555*
4556* Schedules sessions with matching port_id/loop_id but different wwn for
4557* deletion. Returns existing session with matching wwn if present.
4558* Null otherwise.
4559*/
726b8548
QT		 4560struct fc_port *
4561qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4562 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4563{
5d964837 4564 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4565 uint64_t other_wwn;
4566
b7bd104e
AP		 4567 *conflict_sess = NULL;
4568
5d964837 4569 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4570
4571 other_wwn = wwn_to_u64(other_sess->port_name);
4572
4573 if (wwn == other_wwn) {
4574 WARN_ON(sess);
4575 sess = other_sess;
4576 continue;
4577 }
4578
4579 /* find other sess with nport_id collision */
37cacc0a 4580 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4581 if (loop_id != other_sess->loop_id) {
726b8548 4582 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4583 "Invalidating sess %p loop_id %d wwn %llx.\n",
4584 other_sess, other_sess->loop_id, other_wwn);
4585
4586 /*
4587 * logout_on_delete is set by default, but another
4588 * session that has the same s_id/loop_id combo
4589 * might have cleared it when requested this session
4590 * deletion, so don't touch it
4591 */
4592 qlt_schedule_sess_for_deletion(other_sess, true);
4593 } else {
4594 /*
4595 * Another wwn used to have our s_id/loop_id
b7bd104e 4596 * kill the session, but don't free the loop_id
a6ca8878 4597 */
83548fe2 4598 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4599 "Invalidating sess %p loop_id %d wwn %llx.\n",
4600 other_sess, other_sess->loop_id, other_wwn);
4601
b7bd104e 4602 other_sess->keep_nport_handle = 1;
ba743f91
QT		 4603 if (other_sess->disc_state != DSC_DELETED)
4604 *conflict_sess = other_sess;
a6ca8878
AP		 4605 qlt_schedule_sess_for_deletion(other_sess,
4606 true);
4607 }
4608 continue;
4609 }
4610
4611 /* find other sess with nport handle collision */
726b8548
QT		 4612 if ((loop_id == other_sess->loop_id) &&
4613 (loop_id != FC_NO_LOOP_ID)) {
4614 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4615 "Invalidating sess %p loop_id %d wwn %llx.\n",
4616 other_sess, other_sess->loop_id, other_wwn);
4617
4618 /* Same loop_id but different s_id
4619 * Ok to kill and logout */
4620 qlt_schedule_sess_for_deletion(other_sess, true);
4621 }
4622 }
4623
4624 return sess;
4625}
4626
daddf5cf
AP		 4627/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4628static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4629{
4630 struct qla_tgt_sess_op *op;
4631 struct qla_tgt_cmd *cmd;
4632 uint32_t key;
4633 int count = 0;
8b631d87 4634 unsigned long flags;
daddf5cf
AP		 4635
4636 key = (((u32)s_id->b.domain << 16) |
4637 ((u32)s_id->b.area << 8) |
4638 ((u32)s_id->b.al_pa));
4639
8b631d87 4640 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4641 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4642 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4643
daddf5cf
AP		 4644 if (op_key == key) {
4645 op->aborted = true;
4646 count++;
4647 }
4648 }
41dc529a
QT		 4649
4650 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4651 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4652 if (op_key == key) {
4653 op->aborted = true;
4654 count++;
4655 }
4656 }
4657
daddf5cf
AP		 4658 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4659 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4660 if (cmd_key == key) {
193b50b9 4661 cmd->aborted = 1;
daddf5cf
AP		 4662 count++;
4663 }
4664 }
8b631d87 4665 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4666
4667 return count;
4668}
4669
2d70c103
NB		 4670/*
4671 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4672 */
4673static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4674 struct imm_ntfy_from_isp *iocb)
4675{
a6ca8878 4676 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4677 struct qla_hw_data *ha = vha->hw;
5d964837 4678 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4679 uint64_t wwn;
4680 port_id_t port_id;
4681 uint16_t loop_id;
4682 uint16_t wd3_lo;
2d70c103 4683 int res = 0;
5d964837 4684 struct qlt_plogi_ack_t *pla;
82abdcaf 4685 unsigned long flags = 0;
2d70c103 4686
a6ca8878
AP		 4687 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4688
4689 port_id.b.domain = iocb->u.isp24.port_id[2];
4690 port_id.b.area = iocb->u.isp24.port_id[1];
4691 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4692 port_id.b.rsvd_1 = 0;
4693
4694 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4695
726b8548
QT		 4696 ql_dbg(ql_dbg_disc, vha, 0xf026,
4697 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4698 vha->vp_idx, iocb->u.isp24.port_id[2],
4699 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4700 iocb->u.isp24.status_subcode, loop_id,
4701 iocb->u.isp24.port_name);
2d70c103 4702
a6ca8878
AP		 4703 /* res = 1 means ack at the end of thread
4704 * res = 0 means ack async/later.
4705 */
2d70c103
NB		 4706 switch (iocb->u.isp24.status_subcode) {
4707 case ELS_PLOGI:
a6ca8878 4708
daddf5cf
AP		 4709 /* Mark all stale commands in qla_tgt_wq for deletion */
4710 abort_cmds_for_s_id(vha, &port_id);
4711
7560151b
QT		 4712 if (wwn) {
4713 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4714 sess = qlt_find_sess_invalidate_other(vha, wwn,
4715 port_id, loop_id, &conflict_sess);
7560151b
QT		 4716 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4717 }
a6ca8878 4718
726b8548 4719 if (IS_SW_RESV_ADDR(port_id)) {
a6ca8878
AP		 4720 res = 1;
4721 break;
4722 }
4723
b7bd104e
AP		 4724 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4725 if (!pla) {
a6ca8878 4726 qlt_send_term_imm_notif(vha, iocb, 1);
a6ca8878
AP		 4727 break;
4728 }
4729
4730 res = 0;
4731
726b8548
QT		 4732 if (conflict_sess) {
4733 conflict_sess->login_gen++;
b7bd104e 4734 qlt_plogi_ack_link(vha, pla, conflict_sess,
726b8548
QT		 4735 QLT_PLOGI_LINK_CONFLICT);
4736 }
a6ca8878 4737
726b8548
QT		 4738 if (!sess) {
4739 pla->ref_count++;
4740 qla24xx_post_newsess_work(vha, &port_id,
4741 iocb->u.isp24.port_name, pla);
4742 res = 0;
b7bd104e 4743 break;
726b8548 4744 }
b7bd104e
AP		 4745
4746 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
726b8548
QT		 4747 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4748 sess->d_id = port_id;
4749 sess->login_gen++;
4750
5ef696aa
QT		 4751 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4752 "%s %d %8phC DS %d\n",
4753 __func__, __LINE__, sess->port_name, sess->disc_state);
4754
726b8548
QT		 4755 switch (sess->disc_state) {
4756 case DSC_DELETED:
4757 qlt_plogi_ack_unref(vha, pla);
4758 break;
4759
4760 default:
4761 /*
4762 * Under normal circumstances we want to release nport handle
4763 * during LOGO process to avoid nport handle leaks inside FW.
4764 * The exception is when LOGO is done while another PLOGI with
4765 * the same nport handle is waiting as might be the case here.
4766 * Note: there is always a possibily of a race where session
4767 * deletion has already started for other reasons (e.g. ACL
4768 * removal) and now PLOGI arrives:
4769 * 1. if PLOGI arrived in FW after nport handle has been freed,
4770 * FW must have assigned this PLOGI a new/same handle and we
4771 * can proceed ACK'ing it as usual when session deletion
4772 * completes.
4773 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4774 * bit reached it, the handle has now been released. We'll
4775 * get an error when we ACK this PLOGI. Nothing will be sent
4776 * back to initiator. Initiator should eventually retry
4777 * PLOGI and situation will correct itself.
4778 */
4779 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4780 (sess->d_id.b24 == port_id.b24));
4781
83548fe2
QT		 4782 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4783 "%s %d %8phC post del sess\n",
4784 __func__, __LINE__, sess->port_name);
726b8548
QT		 4785
4786
4787 qlt_schedule_sess_for_deletion_lock(sess);
4788 break;
4789 }
4790
a6ca8878
AP		 4791 break;
4792
2d70c103 4793 case ELS_PRLI:
a6ca8878
AP		 4794 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4795
7560151b
QT		 4796 if (wwn) {
4797 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4798 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4799 loop_id, &conflict_sess);
7560151b
QT		 4800 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4801 }
b7bd104e
AP		 4802
4803 if (conflict_sess) {
5ef696aa
QT		 4804 switch (conflict_sess->disc_state) {
4805 case DSC_DELETED:
4806 case DSC_DELETE_PEND:
4807 break;
4808 default:
4809 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4810 "PRLI with conflicting sess %p port %8phC\n",
4811 conflict_sess, conflict_sess->port_name);
4812 conflict_sess->fw_login_state =
4813 DSC_LS_PORT_UNAVAIL;
4814 qlt_send_term_imm_notif(vha, iocb, 1);
4815 res = 0;
4816 break;
4817 }
b7bd104e 4818 }
a6ca8878
AP		 4819
4820 if (sess != NULL) {
82abdcaf
QT		 4821 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4822 switch (sess->fw_login_state) {
4823 case DSC_LS_PLOGI_COMP:
4824 case DSC_LS_PRLI_COMP:
4825 break;
4826 default:
4827 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4828 flags);
a6ca8878
AP		 4829 /*
4830 * Impatient initiator sent PRLI before last
4831 * PLOGI could finish. Will force him to re-try,
4832 * while last one finishes.
4833 */
df673274 4834 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4835 "sess %p PRLI received, before plogi ack.\n",
4836 sess);
4837 qlt_send_term_imm_notif(vha, iocb, 1);
4838 res = 0;
82abdcaf
QT		 4839 spin_lock_irqsave(&tgt->ha->tgt.sess_lock,
4840 flags);
a6ca8878
AP		 4841 break;
4842 }
4843
4844 /*
4845 * This shouldn't happen under normal circumstances,
4846 * since we have deleted the old session during PLOGI
4847 */
df673274 4848 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4849 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4850 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4851
4852 sess->local = 0;
4853 sess->loop_id = loop_id;
37cacc0a 4854 sess->d_id = port_id;
726b8548 4855 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4856
4857 if (wd3_lo & BIT_7)
4858 sess->conf_compl_supported = 1;
4859
726b8548
QT		 4860 if ((wd3_lo & BIT_4) == 0)
4861 sess->port_type = FCT_INITIATOR;
4862 else
4863 sess->port_type = FCT_TARGET;
82abdcaf
QT		 4864
4865 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
df673274
AP		 4866 }
4867 res = 1; /* send notify ack */
4868
4869 /* Make session global (not used in fabric mode) */
4870 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4871 if (sess) {
83548fe2 4872 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4873 "%s %d %8phC post nack\n",
4874 __func__, __LINE__, sess->port_name);
4875 qla24xx_post_nack_work(vha, sess, iocb,
4876 SRB_NACK_PRLI);
4877 res = 0;
4878 } else {
4879 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4880 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4881 qla2xxx_wake_dpc(vha);
4882 }
a6ca8878 4883 } else {
726b8548 4884 if (sess) {
83548fe2 4885 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4886 "%s %d %8phC post nack\n",
4887 __func__, __LINE__, sess->port_name);
726b8548
QT		 4888 qla24xx_post_nack_work(vha, sess, iocb,
4889 SRB_NACK_PRLI);
4890 res = 0;
4891 }
4892 }
a6ca8878
AP		 4893 break;
4894
41dc529a
QT		 4895 case ELS_TPRLO:
4896 if (le16_to_cpu(iocb->u.isp24.flags) &
4897 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4898 loop_id = 0xFFFF;
4899 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4900 res = 1;
4901 break;
4902 }
81881861 4903 /* fall through */
2d70c103
NB		 4904 case ELS_LOGO:
4905 case ELS_PRLO:
726b8548
QT		 4906 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4907 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4908 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4909
4910 if (sess) {
4911 sess->login_gen++;
4912 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4913 sess->logo_ack_needed = 1;
4914 memcpy(sess->iocb, iocb, IOCB_SIZE);
4915 }
4916
2d70c103 4917 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4918
83548fe2 4919 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4920 "%s: logo %llx res %d sess %p ",
4921 __func__, wwn, res, sess);
4922 if (res == 0) {
41dc529a
QT		 4923 /*
4924 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4925 * for LOGO_ACK & sess delete
4926 */
726b8548
QT		 4927 BUG_ON(!sess);
4928 res = 0;
4929 } else {
41dc529a 4930 /* cmd did not go to upper layer. */
726b8548
QT		 4931 if (sess) {
4932 qlt_schedule_sess_for_deletion_lock(sess);
4933 res = 0;
4934 }
4935 /* else logo will be ack */
4936 }
2d70c103
NB		 4937 break;
4938 case ELS_PDISC:
4939 case ELS_ADISC:
4940 {
0e8cd71c 4941 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4942 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 4943 qlt_send_notify_ack(ha->base_qpair,
4944 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 4945 tgt->link_reinit_iocb_pending = 0;
4946 }
726b8548
QT		 4947
4948 sess = qla2x00_find_fcport_by_wwpn(vha,
4949 iocb->u.isp24.port_name, 1);
4950 if (sess) {
83548fe2 4951 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4952 "sess %p lid %d|%d DS %d LS %d\n",
4953 sess, sess->loop_id, loop_id,
4954 sess->disc_state, sess->fw_login_state);
4955 }
4956
2d70c103
NB		 4957 res = 1; /* send notify ack */
4958 break;
4959 }
4960
a6ca8878 4961 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4962 default:
4963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4964 "qla_target(%d): Unsupported ELS command %x "
4965 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4966 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4967 break;
4968 }
4969
4970 return res;
4971}
4972
2d70c103
NB		 4973/*
4974 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4975 */
4976static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
4977 struct imm_ntfy_from_isp *iocb)
4978{
4979 struct qla_hw_data *ha = vha->hw;
4980 uint32_t add_flags = 0;
4981 int send_notify_ack = 1;
4982 uint16_t status;
4983
4984 status = le16_to_cpu(iocb->u.isp2x.status);
4985 switch (status) {
4986 case IMM_NTFY_LIP_RESET:
4987 {
4988 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
4989 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
4990 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
4991 iocb->u.isp24.status_subcode);
4992
4993 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
4994 send_notify_ack = 0;
4995 break;
4996 }
4997
4998 case IMM_NTFY_LIP_LINK_REINIT:
4999 {
0e8cd71c 5000 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5002 "qla_target(%d): LINK REINIT (loop %#x, "
5003 "subcode %x)\n", vha->vp_idx,
5004 le16_to_cpu(iocb->u.isp24.nport_handle),
5005 iocb->u.isp24.status_subcode);
5006 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5007 qlt_send_notify_ack(ha->base_qpair,
5008 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5009 }
5010 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5011 tgt->link_reinit_iocb_pending = 1;
5012 /*
5013 * QLogic requires to wait after LINK REINIT for possible
5014 * PDISC or ADISC ELS commands
5015 */
5016 send_notify_ack = 0;
5017 break;
5018 }
5019
5020 case IMM_NTFY_PORT_LOGOUT:
5021 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5022 "qla_target(%d): Port logout (loop "
5023 "%#x, subcode %x)\n", vha->vp_idx,
5024 le16_to_cpu(iocb->u.isp24.nport_handle),
5025 iocb->u.isp24.status_subcode);
5026
5027 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5028 send_notify_ack = 0;
5029 /* The sessions will be cleared in the callback, if needed */
5030 break;
5031
5032 case IMM_NTFY_GLBL_TPRLO:
5033 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5034 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5035 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5036 send_notify_ack = 0;
5037 /* The sessions will be cleared in the callback, if needed */
5038 break;
5039
5040 case IMM_NTFY_PORT_CONFIG:
5041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5042 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5043 status);
5044 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5045 send_notify_ack = 0;
5046 /* The sessions will be cleared in the callback, if needed */
5047 break;
5048
5049 case IMM_NTFY_GLBL_LOGO:
5050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5051 "qla_target(%d): Link failure detected\n",
5052 vha->vp_idx);
5053 /* I_T nexus loss */
5054 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5055 send_notify_ack = 0;
5056 break;
5057
5058 case IMM_NTFY_IOCB_OVERFLOW:
5059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5060 "qla_target(%d): Cannot provide requested "
5061 "capability (IOCB overflowed the immediate notify "
5062 "resource count)\n", vha->vp_idx);
5063 break;
5064
5065 case IMM_NTFY_ABORT_TASK:
5066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5067 "qla_target(%d): Abort Task (S %08x I %#x -> "
5068 "L %#x)\n", vha->vp_idx,
5069 le16_to_cpu(iocb->u.isp2x.seq_id),
5070 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5071 le16_to_cpu(iocb->u.isp2x.lun));
5072 if (qlt_abort_task(vha, iocb) == 0)
5073 send_notify_ack = 0;
5074 break;
5075
5076 case IMM_NTFY_RESOURCE:
5077 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5078 "qla_target(%d): Out of resources, host %ld\n",
5079 vha->vp_idx, vha->host_no);
5080 break;
5081
5082 case IMM_NTFY_MSG_RX:
5083 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5084 "qla_target(%d): Immediate notify task %x\n",
5085 vha->vp_idx, iocb->u.isp2x.task_flags);
5086 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5087 send_notify_ack = 0;
5088 break;
5089
5090 case IMM_NTFY_ELS:
5091 if (qlt_24xx_handle_els(vha, iocb) == 0)
5092 send_notify_ack = 0;
5093 break;
2d70c103
NB		 5094 default:
5095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5096 "qla_target(%d): Received unknown immediate "
5097 "notify status %x\n", vha->vp_idx, status);
5098 break;
5099 }
5100
5101 if (send_notify_ack)
82de802a
QT		 5102 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5103 0, 0);
2d70c103
NB		 5104}
5105
5106/*
5107 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5108 * This function sends busy to ISP 2xxx or 24xx.
5109 */
82de802a 5110static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5111 struct atio_from_isp *atio, uint16_t status)
5112{
82de802a 5113 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5114 struct ctio7_to_24xx *ctio24;
5115 struct qla_hw_data *ha = vha->hw;
5116 request_t *pkt;
5d964837 5117 struct fc_port *sess = NULL;
7560151b 5118 unsigned long flags;
f7e761f5 5119 u16 temp;
2d70c103 5120
7560151b 5121 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5122 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5123 atio->u.isp24.fcp_hdr.s_id);
7560151b 5124 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5125 if (!sess) {
82de802a 5126 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5127 return 0;
2d70c103
NB		 5128 }
5129 /* Sending marker isn't necessary, since we called from ISR */
5130
82de802a 5131 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5132 if (!pkt) {
667024a3 5133 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5134 "qla_target(%d): %s failed: unable to allocate "
5135 "request packet", vha->vp_idx, __func__);
33e79977 5136 return -ENOMEM;
2d70c103
NB		 5137 }
5138
60a9eadb 5139 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5140 pkt->entry_count = 1;
5141 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5142
5143 ctio24 = (struct ctio7_to_24xx *)pkt;
5144 ctio24->entry_type = CTIO_TYPE7;
5145 ctio24->nport_handle = sess->loop_id;
ad950360 5146 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5147 ctio24->vp_index = vha->vp_idx;
5148 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5149 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5150 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5151 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5152 temp = (atio->u.isp24.attr << 9) |
2d70c103 5153 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5154 CTIO7_FLAGS_DONT_RET_CTIO;
5155 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5156 /*
5157 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5158 * if the explicit conformation is used.
5159 */
5160 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5161 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5162 /* Memory Barrier */
5163 wmb();
8abfa9e2
QT		 5164 if (qpair->reqq_start_iocbs)
5165 qpair->reqq_start_iocbs(qpair);
5166 else
5167 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5168 return 0;
5169}
5170
5171/*
5172 * This routine is used to allocate a command for either a QFull condition
5173 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5174 * out previously.
5175 */
5176static void
5177qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5178 struct atio_from_isp *atio, uint16_t status, int qfull)
5179{
5180 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5181 struct qla_hw_data *ha = vha->hw;
5d964837 5182 struct fc_port *sess;
33e79977
QT		 5183 struct se_session *se_sess;
5184 struct qla_tgt_cmd *cmd;
5185 int tag;
82de802a 5186 unsigned long flags;
33e79977
QT		 5187
5188 if (unlikely(tgt->tgt_stop)) {
5189 ql_dbg(ql_dbg_io, vha, 0x300a,
5190 "New command while device %p is shutting down\n", tgt);
5191 return;
5192 }
5193
5194 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5195 vha->hw->tgt.num_qfull_cmds_dropped++;
5196 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5197 vha->qla_stats.stat_max_qfull_cmds_dropped)
5198 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5199 vha->hw->tgt.num_qfull_cmds_dropped;
5200
5201 ql_dbg(ql_dbg_io, vha, 0x3068,
5202 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5203 vha->vp_idx, __func__,
5204 vha->hw->tgt.num_qfull_cmds_dropped);
5205
5206 qlt_chk_exch_leak_thresh_hold(vha);
5207 return;
5208 }
5209
5210 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5211 (vha, atio->u.isp24.fcp_hdr.s_id);
5212 if (!sess)
5213 return;
5214
5215 se_sess = sess->se_sess;
5216
5217 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5218 if (tag < 0)
5219 return;
5220
5221 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5222 if (!cmd) {
5223 ql_dbg(ql_dbg_io, vha, 0x3009,
5224 "qla_target(%d): %s: Allocation of cmd failed\n",
5225 vha->vp_idx, __func__);
5226
5227 vha->hw->tgt.num_qfull_cmds_dropped++;
5228 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5229 vha->qla_stats.stat_max_qfull_cmds_dropped)
5230 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5231 vha->hw->tgt.num_qfull_cmds_dropped;
5232
5233 qlt_chk_exch_leak_thresh_hold(vha);
5234 return;
5235 }
5236
5237 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5238
5239 qlt_incr_num_pend_cmds(vha);
5240 INIT_LIST_HEAD(&cmd->cmd_list);
5241 memcpy(&cmd->atio, atio, sizeof(*atio));
5242
5243 cmd->tgt = vha->vha_tgt.qla_tgt;
5244 cmd->vha = vha;
7c3f8fd1 5245 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5246 cmd->q_full = 1;
82de802a 5247 cmd->qpair = ha->base_qpair;
33e79977
QT		 5248
5249 if (qfull) {
5250 cmd->q_full = 1;
5251 /* NOTE: borrowing the state field to carry the status */
5252 cmd->state = status;
5253 } else
5254 cmd->term_exchg = 1;
5255
82de802a 5256 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5257 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5258
5259 vha->hw->tgt.num_qfull_cmds_alloc++;
5260 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5261 vha->qla_stats.stat_max_qfull_cmds_alloc)
5262 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5263 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5264 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5265}
5266
5267int
82de802a 5268qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5269{
82de802a 5270 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5271 struct qla_hw_data *ha = vha->hw;
5272 unsigned long flags;
5273 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5274 struct list_head free_list, q_full_list;
33e79977
QT		 5275 int rc = 0;
5276
5277 if (list_empty(&ha->tgt.q_full_list))
5278 return 0;
5279
5280 INIT_LIST_HEAD(&free_list);
82de802a 5281 INIT_LIST_HEAD(&q_full_list);
33e79977 5282
82de802a 5283 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5284 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5285 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5286 return 0;
5287 }
5288
82de802a
QT		 5289 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5290 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5291
5292 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5293 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5294 if (cmd->q_full)
5295 /* cmd->state is a borrowed field to hold status */
82de802a 5296 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5297 else if (cmd->term_exchg)
82de802a 5298 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5299
5300 if (rc == -ENOMEM)
5301 break;
5302
5303 if (cmd->q_full)
5304 ql_dbg(ql_dbg_io, vha, 0x3006,
5305 "%s: busy sent for ox_id[%04x]\n", __func__,
5306 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5307 else if (cmd->term_exchg)
5308 ql_dbg(ql_dbg_io, vha, 0x3007,
5309 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5310 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5311 else
5312 ql_dbg(ql_dbg_io, vha, 0x3008,
5313 "%s: Unexpected cmd in QFull list %p\n", __func__,
5314 cmd);
5315
5316 list_del(&cmd->cmd_list);
5317 list_add_tail(&cmd->cmd_list, &free_list);
5318
5319 /* piggy back on hardware_lock for protection */
5320 vha->hw->tgt.num_qfull_cmds_alloc--;
5321 }
82de802a 5322 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5323
5324 cmd = NULL;
5325
5326 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5327 list_del(&cmd->cmd_list);
5328 /* This cmd was never sent to TCM. There is no need
5329 * to schedule free or call free_cmd
5330 */
5331 qlt_free_cmd(cmd);
5332 }
82de802a
QT		 5333
5334 if (!list_empty(&q_full_list)) {
5335 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5336 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5337 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5338 }
5339
33e79977
QT		 5340 return rc;
5341}
5342
5343static void
82de802a
QT		 5344qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5345 uint16_t status)
33e79977
QT		 5346{
5347 int rc = 0;
82de802a 5348 struct scsi_qla_host *vha = qpair->vha;
33e79977 5349
82de802a 5350 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5351 if (rc == -ENOMEM)
5352 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5353}
5354
5355static int
82de802a
QT		 5356qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5357 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5358{
5359 struct qla_hw_data *ha = vha->hw;
5360 uint16_t status;
8b666809 5361 unsigned long flags;
33e79977
QT		 5362
5363 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5364 return 0;
5365
8b666809
QT		 5366 if (!ha_locked)
5367 spin_lock_irqsave(&ha->hardware_lock, flags);
33e79977 5368 status = temp_sam_status;
82de802a 5369 qlt_send_busy(qpair, atio, status);
8b666809
QT		 5370 if (!ha_locked)
5371 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5372
33e79977 5373 return 1;
2d70c103
NB		 5374}
5375
5376/* ha->hardware_lock supposed to be held on entry */
5377/* called via callback from qla2xxx */
5378static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5379 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5380{
5381 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5382 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5383 int rc;
2f424b9b 5384 unsigned long flags;
2d70c103
NB		 5385
5386 if (unlikely(tgt == NULL)) {
ec7193e2 5387 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5388 "ATIO pkt, but no tgt (ha %p)", ha);
5389 return;
5390 }
2d70c103
NB		 5391 /*
5392 * In tgt_stop mode we also should allow all requests to pass.
5393 * Otherwise, some commands can stuck.
5394 */
5395
2f424b9b 5396 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5397
5398 switch (atio->u.raw.entry_type) {
5399 case ATIO_TYPE7:
2d70c103
NB		 5400 if (unlikely(atio->u.isp24.exchange_addr ==
5401 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5402 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5403 "qla_target(%d): ATIO_TYPE7 "
5404 "received with UNKNOWN exchange address, "
5405 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5406 if (!ha_locked)
5407 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 5408 qlt_send_busy(ha->base_qpair, atio,
5409 SAM_STAT_TASK_SET_FULL);
2f424b9b 5410 if (!ha_locked)
82de802a
QT		 5411 spin_unlock_irqrestore(&ha->hardware_lock,
5412 flags);
2d70c103
NB		 5413 break;
5414 }
33e79977 5415
33e79977 5416 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5417 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5418 atio, ha_locked);
33e79977 5419 if (rc != 0) {
2f424b9b 5420 tgt->atio_irq_cmd_count--;
33e79977
QT		 5421 return;
5422 }
2d70c103 5423 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5424 } else {
2d70c103 5425 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5426 }
2d70c103
NB		 5427 if (unlikely(rc != 0)) {
5428 if (rc == -ESRCH) {
2f424b9b 5429 if (!ha_locked)
82de802a
QT		 5430 spin_lock_irqsave(&ha->hardware_lock,
5431 flags);
2f424b9b 5432
2d70c103 5433#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
82de802a
QT		 5434 qlt_send_busy(ha->base_qpair, atio,
5435 SAM_STAT_BUSY);
2d70c103 5436#else
82de802a
QT		 5437 qlt_send_term_exchange(ha->base_qpair, NULL,
5438 atio, 1, 0);
2d70c103 5439#endif
2f424b9b 5440 if (!ha_locked)
82de802a
QT		 5441 spin_unlock_irqrestore(
5442 &ha->hardware_lock, flags);
2d70c103
NB		 5443 } else {
5444 if (tgt->tgt_stop) {
5445 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5446 "qla_target: Unable to send "
5447 "command to target for req, "
5448 "ignoring.\n");
5449 } else {
5450 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5451 "qla_target(%d): Unable to send "
5452 "command to target, sending BUSY "
5453 "status.\n", vha->vp_idx);
2f424b9b
QT		 5454 if (!ha_locked)
5455 spin_lock_irqsave(
5456 &ha->hardware_lock, flags);
82de802a
QT		 5457 qlt_send_busy(ha->base_qpair,
5458 atio, SAM_STAT_BUSY);
2f424b9b
QT		 5459 if (!ha_locked)
5460 spin_unlock_irqrestore(
5461 &ha->hardware_lock, flags);
2d70c103
NB		 5462 }
5463 }
5464 }
5465 break;
5466
5467 case IMMED_NOTIFY_TYPE:
5468 {
5469 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5470 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5471 "qla_target(%d): Received ATIO packet %x "
5472 "with error status %x\n", vha->vp_idx,
5473 atio->u.raw.entry_type,
5474 atio->u.isp2x.entry_status);
5475 break;
5476 }
5477 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5478
5479 if (!ha_locked)
5480 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5481 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5482 if (!ha_locked)
5483 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5484 break;
5485 }
5486
5487 default:
5488 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5489 "qla_target(%d): Received unknown ATIO atio "
5490 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5491 break;
5492 }
5493
2f424b9b 5494 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5495}
5496
5497/* ha->hardware_lock supposed to be held on entry */
5498/* called via callback from qla2xxx */
82de802a
QT		 5499static void qlt_response_pkt(struct scsi_qla_host *vha,
5500 struct rsp_que *rsp, response_t *pkt)
2d70c103 5501{
0e8cd71c 5502 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5503
5504 if (unlikely(tgt == NULL)) {
5505 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5506 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5507 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5508 return;
5509 }
5510
2d70c103
NB		 5511 /*
5512 * In tgt_stop mode we also should allow all requests to pass.
5513 * Otherwise, some commands can stuck.
5514 */
5515
2d70c103 5516 switch (pkt->entry_type) {
f83adb61 5517 case CTIO_CRC2:
2d70c103
NB		 5518 case CTIO_TYPE7:
5519 {
5520 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
82de802a 5521 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5522 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5523 entry);
5524 break;
5525 }
5526
5527 case ACCEPT_TGT_IO_TYPE:
5528 {
5529 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5530 int rc;
2d70c103 5531 if (atio->u.isp2x.status !=
ad950360 5532 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5533 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5534 "qla_target(%d): ATIO with error "
5535 "status %x received\n", vha->vp_idx,
5536 le16_to_cpu(atio->u.isp2x.status));
5537 break;
5538 }
2d70c103 5539
82de802a 5540 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5541 if (rc != 0)
33e79977 5542 return;
33e79977 5543
2d70c103
NB		 5544 rc = qlt_handle_cmd_for_atio(vha, atio);
5545 if (unlikely(rc != 0)) {
5546 if (rc == -ESRCH) {
5547#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
82de802a 5548 qlt_send_busy(rsp->qpair, atio, 0);
2d70c103 5549#else
82de802a 5550 qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0);
2d70c103
NB		 5551#endif
5552 } else {
5553 if (tgt->tgt_stop) {
5554 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5555 "qla_target: Unable to send "
5556 "command to target, sending TERM "
5557 "EXCHANGE for rsp\n");
82de802a 5558 qlt_send_term_exchange(rsp->qpair, NULL,
a07100e0 5559 atio, 1, 0);
2d70c103
NB		 5560 } else {
5561 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5562 "qla_target(%d): Unable to send "
5563 "command to target, sending BUSY "
5564 "status\n", vha->vp_idx);
82de802a 5565 qlt_send_busy(rsp->qpair, atio, 0);
2d70c103
NB		 5566 }
5567 }
5568 }
5569 }
5570 break;
5571
5572 case CONTINUE_TGT_IO_TYPE:
5573 {
5574 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5575 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5576 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5577 entry);
5578 break;
5579 }
5580
5581 case CTIO_A64_TYPE:
5582 {
5583 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5584 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5585 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5586 entry);
5587 break;
5588 }
5589
5590 case IMMED_NOTIFY_TYPE:
5591 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5592 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5593 break;
5594
5595 case NOTIFY_ACK_TYPE:
5596 if (tgt->notify_ack_expected > 0) {
5597 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5598 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5599 "NOTIFY_ACK seq %08x status %x\n",
5600 le16_to_cpu(entry->u.isp2x.seq_id),
5601 le16_to_cpu(entry->u.isp2x.status));
5602 tgt->notify_ack_expected--;
5603 if (entry->u.isp2x.status !=
ad950360 5604 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5605 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5606 "qla_target(%d): NOTIFY_ACK "
5607 "failed %x\n", vha->vp_idx,
5608 le16_to_cpu(entry->u.isp2x.status));
5609 }
5610 } else {
5611 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5612 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5613 vha->vp_idx);
5614 }
5615 break;
5616
5617 case ABTS_RECV_24XX:
5618 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5619 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5620 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5621 break;
5622
5623 case ABTS_RESP_24XX:
5624 if (tgt->abts_resp_expected > 0) {
5625 struct abts_resp_from_24xx_fw *entry =
5626 (struct abts_resp_from_24xx_fw *)pkt;
5627 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5628 "ABTS_RESP_24XX: compl_status %x\n",
5629 entry->compl_status);
5630 tgt->abts_resp_expected--;
5631 if (le16_to_cpu(entry->compl_status) !=
5632 ABTS_RESP_COMPL_SUCCESS) {
5633 if ((entry->error_subcode1 == 0x1E) &&
5634 (entry->error_subcode2 == 0)) {
5635 /*
5636 * We've got a race here: aborted
5637 * exchange not terminated, i.e.
5638 * response for the aborted command was
5639 * sent between the abort request was
5640 * received and processed.
5641 * Unfortunately, the firmware has a
5642 * silly requirement that all aborted
5643 * exchanges must be explicitely
5644 * terminated, otherwise it refuses to
5645 * send responses for the abort
5646 * requests. So, we have to
5647 * (re)terminate the exchange and retry
5648 * the abort response.
5649 */
5650 qlt_24xx_retry_term_exchange(vha,
5651 entry);
5652 } else
5653 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5654 "qla_target(%d): ABTS_RESP_24XX "
5655 "failed %x (subcode %x:%x)",
5656 vha->vp_idx, entry->compl_status,
5657 entry->error_subcode1,
5658 entry->error_subcode2);
5659 }
5660 } else {
5661 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5662 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5663 "received\n", vha->vp_idx);
5664 }
5665 break;
5666
5667 default:
5668 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5669 "qla_target(%d): Received unknown response pkt "
5670 "type %x\n", vha->vp_idx, pkt->entry_type);
5671 break;
5672 }
5673
2d70c103
NB		 5674}
5675
5676/*
5677 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5678 */
5679void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5680 uint16_t *mailbox)
5681{
5682 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5683 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5684 int login_code;
2d70c103 5685
3a33dc95 5686 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5687 return;
5688
2d70c103
NB		 5689 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5690 IS_QLA2100(ha))
5691 return;
5692 /*
5693 * In tgt_stop mode we also should allow all requests to pass.
5694 * Otherwise, some commands can stuck.
5695 */
5696
2d70c103
NB		 5697
5698 switch (code) {
5699 case MBA_RESET: /* Reset */
5700 case MBA_SYSTEM_ERR: /* System Error */
5701 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5702 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5703 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5704 "qla_target(%d): System error async event %#x "
6efb3c0a 5705 "occurred", vha->vp_idx, code);
2d70c103
NB		 5706 break;
5707 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5708 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5709 break;
5710
5711 case MBA_LOOP_UP:
5712 {
5713 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5714 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5715 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5716 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5717 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5718 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5719 qlt_send_notify_ack(ha->base_qpair,
5720 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5721 0, 0, 0, 0, 0, 0);
5722 tgt->link_reinit_iocb_pending = 0;
5723 }
5724 break;
5725 }
5726
5727 case MBA_LIP_OCCURRED:
5728 case MBA_LOOP_DOWN:
5729 case MBA_LIP_RESET:
5730 case MBA_RSCN_UPDATE:
5731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5732 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5733 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5734 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5735 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5736 break;
5737
ead03855 5738 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5739 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5740 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5741 vha->vp_idx,
5742 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5743 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5744
5745 if (le16_to_cpu(mailbox[3]) == 1) {
5746 /* exchange starvation. */
5747 vha->hw->exch_starvation++;
5748 if (vha->hw->exch_starvation > 5) {
83548fe2 5749 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5750 "Exchange starvation-. Resetting RISC\n");
5751
5752 vha->hw->exch_starvation = 0;
5753 if (IS_P3P_TYPE(vha->hw))
5754 set_bit(FCOE_CTX_RESET_NEEDED,
5755 &vha->dpc_flags);
5756 else
5757 set_bit(ISP_ABORT_NEEDED,
5758 &vha->dpc_flags);
5759 qla2xxx_wake_dpc(vha);
5760 }
5761 }
5762 break;
5763
2d70c103
NB		 5764 case MBA_PORT_UPDATE:
5765 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5766 "qla_target(%d): Port update async event %#x "
6efb3c0a 5767 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5768 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5769 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5770 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5771
5772 login_code = le16_to_cpu(mailbox[2]);
ead03855 5773 if (login_code == 0x4) {
2d70c103
NB		 5774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5775 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5776 vha->hw->exch_starvation = 0;
5777 } else if (login_code == 0x7)
2d70c103
NB		 5778 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5779 "Async MB 2: Port Logged Out\n");
5780 break;
2d70c103 5781 default:
2d70c103
NB		 5782 break;
5783 }
5784
2d70c103
NB		 5785}
5786
5787static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5788 uint16_t loop_id)
5789{
726b8548 5790 fc_port_t *fcport, *tfcp, *del;
2d70c103 5791 int rc;
726b8548
QT		 5792 unsigned long flags;
5793 u8 newfcport = 0;
2d70c103 5794
063b36d6 5795 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 5796 if (!fcport) {
5797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5798 "qla_target(%d): Allocation of tmp FC port failed",
5799 vha->vp_idx);
5800 return NULL;
5801 }
5802
2d70c103
NB		 5803 fcport->loop_id = loop_id;
5804
15f30a57 5805 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5806 if (rc != QLA_SUCCESS) {
5807 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5808 "qla_target(%d): Failed to retrieve fcport "
5809 "information -- get_port_database() returned %x "
5810 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5811 kfree(fcport);
5812 return NULL;
5813 }
5814
726b8548
QT		 5815 del = NULL;
5816 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5817 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5818
5819 if (tfcp) {
5820 tfcp->d_id = fcport->d_id;
5821 tfcp->port_type = fcport->port_type;
5822 tfcp->supported_classes = fcport->supported_classes;
5823 tfcp->flags |= fcport->flags;
76f9a2dd 5824 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 5825
5826 del = fcport;
5827 fcport = tfcp;
5828 } else {
5829 if (vha->hw->current_topology == ISP_CFG_F)
5830 fcport->flags |= FCF_FABRIC_DEVICE;
5831
5832 list_add_tail(&fcport->list, &vha->vp_fcports);
5833 if (!IS_SW_RESV_ADDR(fcport->d_id))
5834 vha->fcport_count++;
5835 fcport->login_gen++;
5836 fcport->disc_state = DSC_LOGIN_COMPLETE;
5837 fcport->login_succ = 1;
5838 newfcport = 1;
5839 }
5840
5841 fcport->deleted = 0;
5842 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5843
5844 switch (vha->host->active_mode) {
5845 case MODE_INITIATOR:
5846 case MODE_DUAL:
5847 if (newfcport) {
5848 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5849 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5850 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5851 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5852 qla24xx_post_upd_fcport_work(vha, fcport);
5853 } else {
83548fe2 5854 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5855 "%s %d %8phC post gpsc fcp_cnt %d\n",
5856 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5857 qla24xx_post_gpsc_work(vha, fcport);
5858 }
5859 }
5860 break;
5861
5862 case MODE_TARGET:
5863 default:
5864 break;
5865 }
5866 if (del)
5867 qla2x00_free_fcport(del);
5868
2d70c103
NB		 5869 return fcport;
5870}
5871
5872/* Must be called under tgt_mutex */
5d964837 5873static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5874 uint8_t *s_id)
5875{
5d964837 5876 struct fc_port *sess = NULL;
2d70c103
NB		 5877 fc_port_t *fcport = NULL;
5878 int rc, global_resets;
5879 uint16_t loop_id = 0;
5880
726b8548
QT		 5881 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5882 /*
5883 * This is Domain Controller, so it should be
5884 * OK to drop SCSI commands from it.
5885 */
5886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5887 "Unable to find initiator with S_ID %x:%x:%x",
5888 s_id[0], s_id[1], s_id[2]);
5889 return NULL;
5890 }
5891
71cdc079
AP		 5892 mutex_lock(&vha->vha_tgt.tgt_mutex);
5893
2d70c103 5894retry:
0e8cd71c
SK		 5895 global_resets =
5896 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5897
5898 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5899 if (rc != 0) {
71cdc079
AP		 5900 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5901
726b8548
QT		 5902 ql_log(ql_log_info, vha, 0xf071,
5903 "qla_target(%d): Unable to find "
5904 "initiator with S_ID %x:%x:%x",
5905 vha->vp_idx, s_id[0], s_id[1],
5906 s_id[2]);
71cdc079
AP		 5907
5908 if (rc == -ENOENT) {
5909 qlt_port_logo_t logo;
5910 sid_to_portid(s_id, &logo.id);
5911 logo.cmd_count = 1;
5912 qlt_send_first_logo(vha, &logo);
5913 }
5914
2d70c103
NB		 5915 return NULL;
5916 }
5917
5918 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5919 if (!fcport) {
5920 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5921 return NULL;
71cdc079 5922 }
2d70c103
NB		 5923
5924 if (global_resets !=
0e8cd71c 5925 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5927 "qla_target(%d): global reset during session discovery "
5928 "(counter was %d, new %d), retrying", vha->vp_idx,
5929 global_resets,
0e8cd71c
SK		 5930 atomic_read(&vha->vha_tgt.
5931 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5932 goto retry;
5933 }
5934
5935 sess = qlt_create_sess(vha, fcport, true);
5936
71cdc079
AP		 5937 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5938
2d70c103
NB		 5939 return sess;
5940}
5941
5942static void qlt_abort_work(struct qla_tgt *tgt,
5943 struct qla_tgt_sess_work_param *prm)
5944{
5945 struct scsi_qla_host *vha = tgt->vha;
5946 struct qla_hw_data *ha = vha->hw;
5d964837 5947 struct fc_port *sess = NULL;
7560151b 5948 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5949 uint32_t be_s_id;
5950 uint8_t s_id[3];
5951 int rc;
5952
7560151b 5953 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5954
5955 if (tgt->tgt_stop)
7560151b 5956 goto out_term2;
2d70c103
NB		 5957
5958 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5959 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5960 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5961
5962 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5963 (unsigned char *)&be_s_id);
5964 if (!sess) {
7560151b 5965 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5966
2d70c103
NB		 5967 sess = qlt_make_local_sess(vha, s_id);
5968 /* sess has got an extra creation ref */
2d70c103 5969
7560151b 5970 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5971 if (!sess)
7560151b 5972 goto out_term2;
2d70c103 5973 } else {
726b8548 5974 if (sess->deleted) {
e52a8b45 5975 sess = NULL;
7560151b 5976 goto out_term2;
e52a8b45
AP		 5977 }
5978
726b8548 5979 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5980 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 5981 "%s: kref_get fail %8phC \n",
5982 __func__, sess->port_name);
5983 sess = NULL;
5984 goto out_term2;
5985 }
2d70c103
NB		 5986 }
5987
2d70c103 5988 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 5989 ha->tgt.tgt_ops->put_sess(sess);
5990 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
5991
2d70c103
NB		 5992 if (rc != 0)
5993 goto out_term;
2d70c103
NB		 5994 return;
5995
7560151b 5996out_term2:
f159b3c7
QT		 5997 if (sess)
5998 ha->tgt.tgt_ops->put_sess(sess);
5999 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 6000
2d70c103 6001out_term:
f159b3c7 6002 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6003 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6004 FCP_TMF_REJECTED, false);
7560151b 6005 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6006}
6007
6008static void qlt_tmr_work(struct qla_tgt *tgt,
6009 struct qla_tgt_sess_work_param *prm)
6010{
6011 struct atio_from_isp *a = &prm->tm_iocb2;
6012 struct scsi_qla_host *vha = tgt->vha;
6013 struct qla_hw_data *ha = vha->hw;
5d964837 6014 struct fc_port *sess = NULL;
2d70c103
NB		 6015 unsigned long flags;
6016 uint8_t *s_id = NULL; /* to hide compiler warnings */
6017 int rc;
f775bd14 6018 u64 unpacked_lun;
52c82823 6019 int fn;
2d70c103
NB		 6020 void *iocb;
6021
7560151b 6022 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6023
6024 if (tgt->tgt_stop)
f159b3c7 6025 goto out_term2;
2d70c103
NB		 6026
6027 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6028 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6029 if (!sess) {
7560151b 6030 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6031
2d70c103
NB		 6032 sess = qlt_make_local_sess(vha, s_id);
6033 /* sess has got an extra creation ref */
2d70c103 6034
7560151b 6035 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6036 if (!sess)
f159b3c7 6037 goto out_term2;
2d70c103 6038 } else {
726b8548 6039 if (sess->deleted) {
e52a8b45 6040 sess = NULL;
f159b3c7 6041 goto out_term2;
e52a8b45
AP		 6042 }
6043
726b8548 6044 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6045 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6046 "%s: kref_get fail %8phC\n",
6047 __func__, sess->port_name);
6048 sess = NULL;
f159b3c7 6049 goto out_term2;
726b8548 6050 }
2d70c103
NB		 6051 }
6052
6053 iocb = a;
2d70c103 6054 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6055 unpacked_lun =
6056 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6057
6058 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 6059 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6060 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 6061
6062 if (rc != 0)
6063 goto out_term;
2d70c103
NB		 6064 return;
6065
f159b3c7
QT		 6066out_term2:
6067 if (sess)
6068 ha->tgt.tgt_ops->put_sess(sess);
6069 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6070out_term:
82de802a 6071 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6072}
6073
6074static void qlt_sess_work_fn(struct work_struct *work)
6075{
6076 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6077 struct scsi_qla_host *vha = tgt->vha;
6078 unsigned long flags;
6079
6080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6081
6082 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6083 while (!list_empty(&tgt->sess_works_list)) {
6084 struct qla_tgt_sess_work_param *prm = list_entry(
6085 tgt->sess_works_list.next, typeof(*prm),
6086 sess_works_list_entry);
6087
6088 /*
6089 * This work can be scheduled on several CPUs at time, so we
6090 * must delete the entry to eliminate double processing
6091 */
6092 list_del(&prm->sess_works_list_entry);
6093
6094 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6095
6096 switch (prm->type) {
6097 case QLA_TGT_SESS_WORK_ABORT:
6098 qlt_abort_work(tgt, prm);
6099 break;
6100 case QLA_TGT_SESS_WORK_TM:
6101 qlt_tmr_work(tgt, prm);
6102 break;
6103 default:
6104 BUG_ON(1);
6105 break;
6106 }
6107
6108 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6109
6110 kfree(prm);
6111 }
6112 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6113}
6114
6115/* Must be called under tgt_host_action_mutex */
6116int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6117{
6118 struct qla_tgt *tgt;
e326d22a
QT		 6119 int rc, i;
6120 struct qla_qpair_hint *h;
2d70c103
NB		 6121
6122 if (!QLA_TGT_MODE_ENABLED())
6123 return 0;
6124
33c36c0a
AE		 6125 if (!IS_TGT_MODE_CAPABLE(ha)) {
6126 ql_log(ql_log_warn, base_vha, 0xe070,
6127 "This adapter does not support target mode.\n");
6128 return 0;
6129 }
6130
2d70c103 6131 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6132 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6133
0e8cd71c 6134 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6135
6136 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6137 if (!tgt) {
6138 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6139 "Unable to allocate struct qla_tgt\n");
6140 return -ENOMEM;
6141 }
6142
e326d22a
QT		 6143 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6144 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6145 if (!tgt->qphints) {
6146 kfree(tgt);
6147 ql_log(ql_log_warn, base_vha, 0x0197,
6148 "Unable to allocate qpair hints.\n");
6149 return -ENOMEM;
6150 }
6151
2d70c103
NB		 6152 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6153 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6154
e326d22a
QT		 6155 rc = btree_init64(&tgt->lun_qpair_map);
6156 if (rc) {
6157 kfree(tgt->qphints);
6158 kfree(tgt);
6159 ql_log(ql_log_info, base_vha, 0x0198,
6160 "Unable to initialize lun_qpair_map btree\n");
6161 return -EIO;
6162 }
6163 h = &tgt->qphints[0];
6164 h->qpair = ha->base_qpair;
6165 INIT_LIST_HEAD(&h->hint_elem);
6166 h->cpuid = ha->base_qpair->cpuid;
6167 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6168
6169 for (i = 0; i < ha->max_qpairs; i++) {
6170 unsigned long flags;
6171
6172 struct qla_qpair *qpair = ha->queue_pair_map[i];
6173 h = &tgt->qphints[i + 1];
6174 INIT_LIST_HEAD(&h->hint_elem);
6175 if (qpair) {
6176 h->qpair = qpair;
6177 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6178 list_add_tail(&h->hint_elem, &qpair->hints_list);
6179 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6180 h->cpuid = qpair->cpuid;
6181 }
6182 }
6183
2d70c103
NB		 6184 tgt->ha = ha;
6185 tgt->vha = base_vha;
6186 init_waitqueue_head(&tgt->waitQ);
2d70c103 6187 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6188 spin_lock_init(&tgt->sess_work_lock);
6189 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6190 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6191 atomic_set(&tgt->tgt_global_resets_count, 0);
6192
0e8cd71c 6193 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6194
6195 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6196 "qla_target(%d): using 64 Bit PCI addressing",
6197 base_vha->vp_idx);
2d70c103
NB		 6198 /* 3 is reserved */
6199 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6200
6201 mutex_lock(&qla_tgt_mutex);
6202 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6203 mutex_unlock(&qla_tgt_mutex);
6204
f1443eeb
QT		 6205 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6206 ha->tgt.tgt_ops->add_target(base_vha);
6207
2d70c103
NB		 6208 return 0;
6209}
6210
6211/* Must be called under tgt_host_action_mutex */
6212int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6213{
0e8cd71c 6214 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6215 return 0;
6216
ddb95145
NB		 6217 if (vha->fc_vport) {
6218 qlt_release(vha->vha_tgt.qla_tgt);
6219 return 0;
6220 }
33e79977
QT		 6221
6222 /* free left over qfull cmds */
6223 qlt_init_term_exchange(vha);
6224
2d70c103
NB		 6225 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6226 vha->host_no, ha);
0e8cd71c 6227 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6228
6229 return 0;
6230}
6231
482c9dc7
QT		 6232void qlt_remove_target_resources(struct qla_hw_data *ha)
6233{
6234 struct scsi_qla_host *node;
6235 u32 key = 0;
6236
6237 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6238 btree_remove32(&ha->tgt.host_map, key);
6239
6240 btree_destroy32(&ha->tgt.host_map);
6241}
6242
2d70c103
NB		 6243static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6244 unsigned char *b)
6245{
6246 int i;
6247
6248 pr_debug("qla2xxx HW vha->node_name: ");
6249 for (i = 0; i < WWN_SIZE; i++)
6250 pr_debug("%02x ", vha->node_name[i]);
6251 pr_debug("\n");
6252 pr_debug("qla2xxx HW vha->port_name: ");
6253 for (i = 0; i < WWN_SIZE; i++)
6254 pr_debug("%02x ", vha->port_name[i]);
6255 pr_debug("\n");
6256
6257 pr_debug("qla2xxx passed configfs WWPN: ");
6258 put_unaligned_be64(wwpn, b);
6259 for (i = 0; i < WWN_SIZE; i++)
6260 pr_debug("%02x ", b[i]);
6261 pr_debug("\n");
6262}
6263
6264/**
6265 * qla_tgt_lport_register - register lport with external module
6266 *
6267 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6268 * @wwpn: Passwd FC target WWPN
6269 * @callback: lport initialization callback for tcm_qla2xxx code
6270 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6271 */
49a47f2c
NB		 6272int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6273 u64 npiv_wwpn, u64 npiv_wwnn,
6274 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6275{
6276 struct qla_tgt *tgt;
6277 struct scsi_qla_host *vha;
6278 struct qla_hw_data *ha;
6279 struct Scsi_Host *host;
6280 unsigned long flags;
6281 int rc;
6282 u8 b[WWN_SIZE];
6283
6284 mutex_lock(&qla_tgt_mutex);
6285 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6286 vha = tgt->vha;
6287 ha = vha->hw;
6288
6289 host = vha->host;
6290 if (!host)
6291 continue;
6292
2d70c103
NB		 6293 if (!(host->hostt->supported_mode & MODE_TARGET))
6294 continue;
6295
6296 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6297 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6298 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6299 host->host_no);
6300 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6301 continue;
6302 }
ddb95145
NB		 6303 if (tgt->tgt_stop) {
6304 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6305 host->host_no);
6306 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6307 continue;
6308 }
2d70c103
NB		 6309 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6310
6311 if (!scsi_host_get(host)) {
6312 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6313 "Unable to scsi_host_get() for"
6314 " qla2xxx scsi_host\n");
6315 continue;
6316 }
49a47f2c 6317 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6318
6319 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6320 scsi_host_put(host);
6321 continue;
6322 }
49a47f2c
NB		 6323 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6324 if (rc != 0)
6325 scsi_host_put(host);
6326
ddb95145 6327 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6328 return rc;
6329 }
6330 mutex_unlock(&qla_tgt_mutex);
6331
6332 return -ENODEV;
6333}
6334EXPORT_SYMBOL(qlt_lport_register);
6335
6336/**
6337 * qla_tgt_lport_deregister - Degister lport
6338 *
6339 * @vha: Registered scsi_qla_host pointer
6340 */
6341void qlt_lport_deregister(struct scsi_qla_host *vha)
6342{
6343 struct qla_hw_data *ha = vha->hw;
6344 struct Scsi_Host *sh = vha->host;
6345 /*
6346 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6347 */
0e8cd71c 6348 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6349 ha->tgt.tgt_ops = NULL;
6350 /*
6351 * Release the Scsi_Host reference for the underlying qla2xxx host
6352 */
6353 scsi_host_put(sh);
6354}
6355EXPORT_SYMBOL(qlt_lport_deregister);
6356
6357/* Must be called under HW lock */
55a9066f 6358static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6359{
2d70c103
NB		 6360 switch (ql2x_ini_mode) {
6361 case QLA2XXX_INI_MODE_DISABLED:
6362 case QLA2XXX_INI_MODE_EXCLUSIVE:
6363 vha->host->active_mode = MODE_TARGET;
6364 break;
6365 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6366 vha->host->active_mode = MODE_UNKNOWN;
6367 break;
6368 case QLA2XXX_INI_MODE_DUAL:
6369 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6370 break;
6371 default:
6372 break;
6373 }
2d70c103
NB		 6374}
6375
6376/* Must be called under HW lock */
55a9066f 6377static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6378{
2d70c103
NB		 6379 switch (ql2x_ini_mode) {
6380 case QLA2XXX_INI_MODE_DISABLED:
6381 vha->host->active_mode = MODE_UNKNOWN;
6382 break;
6383 case QLA2XXX_INI_MODE_EXCLUSIVE:
6384 vha->host->active_mode = MODE_INITIATOR;
6385 break;
6386 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6387 case QLA2XXX_INI_MODE_DUAL:
6388 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6389 break;
6390 default:
6391 break;
6392 }
2d70c103
NB		 6393}
6394
6395/*
6396 * qla_tgt_enable_vha - NO LOCK HELD
6397 *
6398 * host_reset, bring up w/ Target Mode Enabled
6399 */
6400void
6401qlt_enable_vha(struct scsi_qla_host *vha)
6402{
6403 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6404 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6405 unsigned long flags;
0e8cd71c 6406 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6407
6408 if (!tgt) {
6409 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6410 "Unable to locate qla_tgt pointer from"
6411 " struct qla_hw_data\n");
6412 dump_stack();
6413 return;
6414 }
6415
6416 spin_lock_irqsave(&ha->hardware_lock, flags);
6417 tgt->tgt_stopped = 0;
6418 qlt_set_mode(vha);
6419 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6420
0e8cd71c
SK		 6421 if (vha->vp_idx) {
6422 qla24xx_disable_vp(vha);
6423 qla24xx_enable_vp(vha);
6424 } else {
6425 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6426 qla2xxx_wake_dpc(base_vha);
6427 qla2x00_wait_for_hba_online(base_vha);
6428 }
2d70c103
NB		 6429}
6430EXPORT_SYMBOL(qlt_enable_vha);
6431
6432/*
6433 * qla_tgt_disable_vha - NO LOCK HELD
6434 *
6435 * Disable Target Mode and reset the adapter
6436 */
55a9066f 6437static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6438{
6439 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6440 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6441 unsigned long flags;
6442
6443 if (!tgt) {
6444 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6445 "Unable to locate qla_tgt pointer from"
6446 " struct qla_hw_data\n");
6447 dump_stack();
6448 return;
6449 }
6450
6451 spin_lock_irqsave(&ha->hardware_lock, flags);
6452 qlt_clear_mode(vha);
6453 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6454
6455 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6456 qla2xxx_wake_dpc(vha);
6457 qla2x00_wait_for_hba_online(vha);
6458}
6459
6460/*
6461 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6462 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6463 * members.
6464 */
6465void
6466qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6467{
0e8cd71c
SK		 6468 vha->vha_tgt.qla_tgt = NULL;
6469
6470 mutex_init(&vha->vha_tgt.tgt_mutex);
6471 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6472
6473 qlt_clear_mode(vha);
6474
6475 /*
6476 * NOTE: Currently the value is kept the same for <24xx and
6477 * >=24xx ISPs. If it is necessary to change it,
6478 * the check should be added for specific ISPs,
6479 * assigning the value appropriately.
6480 */
6481 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6482
6483 qlt_add_target(ha, vha);
2d70c103
NB		 6484}
6485
6486void
6487qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6488{
6489 /*
6490 * FC-4 Feature bit 0 indicates target functionality to the name server.
6491 */
6492 if (qla_tgt_mode_enabled(vha)) {
726b8548 6493 ct_req->req.rff_id.fc4_feature = BIT_0;
2d70c103
NB		 6494 } else if (qla_ini_mode_enabled(vha)) {
6495 ct_req->req.rff_id.fc4_feature = BIT_1;
726b8548
QT		 6496 } else if (qla_dual_mode_enabled(vha))
6497 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
2d70c103
NB		 6498}
6499
6500/*
6501 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6502 * @ha: HA context
6503 *
6504 * Beginning of ATIO ring has initialization control block already built
6505 * by nvram config routine.
6506 *
6507 * Returns 0 on success.
6508 */
6509void
6510qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6511{
6512 struct qla_hw_data *ha = vha->hw;
6513 uint16_t cnt;
6514 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6515
ead03855 6516 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6517 return;
6518
6519 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6520 pkt->u.raw.signature = ATIO_PROCESSED;
6521 pkt++;
6522 }
6523
6524}
6525
6526/*
6527 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6528 * @ha: SCSI driver HA context
6529 */
6530void
2f424b9b 6531qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6532{
6533 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6534 struct atio_from_isp *pkt;
6535 int cnt, i;
6536
ec7193e2 6537 if (!ha->flags.fw_started)
2d70c103
NB		 6538 return;
6539
5f35509d
QT		 6540 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6541 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6542 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6543 cnt = pkt->u.raw.entry_count;
6544
5f35509d
QT		 6545 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6546 /*
6547 * This packet is corrupted. The header + payload
6548 * can not be trusted. There is no point in passing
6549 * it further up.
6550 */
83548fe2 6551 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6552 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6553 pkt->u.isp24.fcp_hdr.s_id,
6554 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6555 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6556
6557 adjust_corrupted_atio(pkt);
82de802a
QT		 6558 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6559 ha_locked, 0);
5f35509d
QT		 6560 } else {
6561 qlt_24xx_atio_pkt_all_vps(vha,
6562 (struct atio_from_isp *)pkt, ha_locked);
6563 }
2d70c103
NB		 6564
6565 for (i = 0; i < cnt; i++) {
6566 ha->tgt.atio_ring_index++;
6567 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6568 ha->tgt.atio_ring_index = 0;
6569 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6570 } else
6571 ha->tgt.atio_ring_ptr++;
6572
6573 pkt->u.raw.signature = ATIO_PROCESSED;
6574 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6575 }
6576 wmb();
6577 }
6578
6579 /* Adjust ring index */
aa230bc5 6580 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6581}
6582
6583void
aa230bc5 6584qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6585{
6586 struct qla_hw_data *ha = vha->hw;
d2b292c3
QT		 6587 struct qla_msix_entry *msix = &ha->msix_entries[2];
6588 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6589
aa230bc5
AE		 6590 if (!QLA_TGT_MODE_ENABLED())
6591 return;
2d70c103 6592
aa230bc5
AE		 6593 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6594 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6595 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6596
d2b292c3
QT		 6597 if (ha->flags.msix_enabled) {
6598 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6599 if (IS_QLA2071(ha)) {
6600 /* 4 ports Baker: Enable Interrupt Handshake */
6601 icb->msix_atio = 0;
6602 icb->firmware_options_2 |= BIT_26;
6603 } else {
6604 icb->msix_atio = cpu_to_le16(msix->entry);
6605 icb->firmware_options_2 &= ~BIT_26;
6606 }
6607 ql_dbg(ql_dbg_init, vha, 0xf072,
6608 "Registering ICB vector 0x%x for atio que.\n",
6609 msix->entry);
6610 }
6611 } else {
6612 /* INTx|MSI */
6613 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6614 icb->msix_atio = 0;
6615 icb->firmware_options_2 |= BIT_26;
6616 ql_dbg(ql_dbg_init, vha, 0xf072,
6617 "%s: Use INTx for ATIOQ.\n", __func__);
6618 }
2d70c103
NB		 6619 }
6620}
6621
6622void
6623qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6624{
6625 struct qla_hw_data *ha = vha->hw;
99e1b683
QT		 6626
6627 if (!QLA_TGT_MODE_ENABLED())
6628 return;
2d70c103 6629
ead03855 6630 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6631 if (!ha->tgt.saved_set) {
6632 /* We save only once */
6633 ha->tgt.saved_exchange_count = nv->exchange_count;
6634 ha->tgt.saved_firmware_options_1 =
6635 nv->firmware_options_1;
6636 ha->tgt.saved_firmware_options_2 =
6637 nv->firmware_options_2;
6638 ha->tgt.saved_firmware_options_3 =
6639 nv->firmware_options_3;
6640 ha->tgt.saved_set = 1;
6641 }
6642
99e1b683 6643 if (qla_tgt_mode_enabled(vha))
ead03855 6644 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6645 else /* dual */
6646 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6647
6648 /* Enable target mode */
ad950360 6649 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6650
6651 /* Disable ini mode, if requested */
726b8548 6652 if (qla_tgt_mode_enabled(vha))
ad950360 6653 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6654
6655 /* Disable Full Login after LIP */
ad950360 6656 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6657 /* Enable initial LIP */
ad950360 6658 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6659 if (ql2xtgt_tape_enable)
6660 /* Enable FC Tape support */
6661 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6662 else
6663 /* Disable FC Tape support */
6664 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6665
2d70c103 6666 /* Disable Full Login after LIP */
ad950360 6667 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6668
6669 /*
6670 * clear BIT 15 explicitly as we have seen at least
6671 * a couple of instances where this was set and this
6672 * was causing the firmware to not be initialized.
6673 */
6674 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6675 /* Enable target PRLI control */
ad950360 6676 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6677 } else {
6678 if (ha->tgt.saved_set) {
6679 nv->exchange_count = ha->tgt.saved_exchange_count;
6680 nv->firmware_options_1 =
6681 ha->tgt.saved_firmware_options_1;
6682 nv->firmware_options_2 =
6683 ha->tgt.saved_firmware_options_2;
6684 nv->firmware_options_3 =
6685 ha->tgt.saved_firmware_options_3;
6686 }
6687 return;
6688 }
6689
7c3f8fd1 6690 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6691 if (vha->flags.init_done)
6692 fc_host_supported_classes(vha->host) =
6693 FC_COS_CLASS2 | FC_COS_CLASS3;
6694
ad950360 6695 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6696 } else {
6697 if (vha->flags.init_done)
6698 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6699
ad950360 6700 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6701 }
6702}
6703
6704void
6705qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6706 struct init_cb_24xx *icb)
6707{
6708 struct qla_hw_data *ha = vha->hw;
6709
481ce733
QT		 6710 if (!QLA_TGT_MODE_ENABLED())
6711 return;
6712
2d70c103
NB		 6713 if (ha->tgt.node_name_set) {
6714 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6715 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6716 }
481ce733
QT		 6717
6718 /* disable ZIO at start time. */
6719 if (!vha->flags.init_done) {
6720 uint32_t tmp;
6721 tmp = le32_to_cpu(icb->firmware_options_2);
6722 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6723 icb->firmware_options_2 = cpu_to_le32(tmp);
6724 }
2d70c103
NB		 6725}
6726
aa230bc5
AE		 6727void
6728qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6729{
6730 struct qla_hw_data *ha = vha->hw;
6731
6732 if (!QLA_TGT_MODE_ENABLED())
6733 return;
6734
ead03855 6735 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6736 if (!ha->tgt.saved_set) {
6737 /* We save only once */
6738 ha->tgt.saved_exchange_count = nv->exchange_count;
6739 ha->tgt.saved_firmware_options_1 =
6740 nv->firmware_options_1;
6741 ha->tgt.saved_firmware_options_2 =
6742 nv->firmware_options_2;
6743 ha->tgt.saved_firmware_options_3 =
6744 nv->firmware_options_3;
6745 ha->tgt.saved_set = 1;
6746 }
6747
99e1b683 6748 if (qla_tgt_mode_enabled(vha))
ead03855 6749 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6750 else /* dual */
6751 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6752
6753 /* Enable target mode */
ad950360 6754 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6755
6756 /* Disable ini mode, if requested */
726b8548 6757 if (qla_tgt_mode_enabled(vha))
ad950360 6758 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6759 /* Disable Full Login after LIP */
ad950360 6760 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6761 /* Enable initial LIP */
ad950360 6762 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6763 /*
6764 * clear BIT 15 explicitly as we have seen at
6765 * least a couple of instances where this was set
6766 * and this was causing the firmware to not be
6767 * initialized.
6768 */
6769 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6770 if (ql2xtgt_tape_enable)
6771 /* Enable FC tape support */
6772 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6773 else
6774 /* Disable FC tape support */
6775 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6776
aa230bc5 6777 /* Disable Full Login after LIP */
ad950360 6778 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6779 /* Enable target PRLI control */
ad950360 6780 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 6781 } else {
6782 if (ha->tgt.saved_set) {
6783 nv->exchange_count = ha->tgt.saved_exchange_count;
6784 nv->firmware_options_1 =
6785 ha->tgt.saved_firmware_options_1;
6786 nv->firmware_options_2 =
6787 ha->tgt.saved_firmware_options_2;
6788 nv->firmware_options_3 =
6789 ha->tgt.saved_firmware_options_3;
6790 }
6791 return;
6792 }
6793
7c3f8fd1 6794 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 6795 if (vha->flags.init_done)
6796 fc_host_supported_classes(vha->host) =
6797 FC_COS_CLASS2 | FC_COS_CLASS3;
6798
ad950360 6799 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6800 } else {
6801 if (vha->flags.init_done)
6802 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6803
ad950360 6804 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6805 }
6806}
6807
6808void
6809qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6810 struct init_cb_81xx *icb)
6811{
6812 struct qla_hw_data *ha = vha->hw;
6813
6814 if (!QLA_TGT_MODE_ENABLED())
6815 return;
6816
6817 if (ha->tgt.node_name_set) {
6818 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6819 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6820 }
481ce733
QT		 6821
6822 /* disable ZIO at start time. */
6823 if (!vha->flags.init_done) {
6824 uint32_t tmp;
6825 tmp = le32_to_cpu(icb->firmware_options_2);
6826 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6827 icb->firmware_options_2 = cpu_to_le32(tmp);
6828 }
6829
aa230bc5
AE		 6830}
6831
6832void
6833qlt_83xx_iospace_config(struct qla_hw_data *ha)
6834{
6835 if (!QLA_TGT_MODE_ENABLED())
6836 return;
6837
6838 ha->msix_count += 1; /* For ATIO Q */
6839}
6840
2d70c103
NB		 6841
6842void
6843qlt_modify_vp_config(struct scsi_qla_host *vha,
6844 struct vp_config_entry_24xx *vpmod)
6845{
ead03855
QT		 6846 /* enable target mode. Bit5 = 1 => disable */
6847 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6848 vpmod->options_idx1 &= ~BIT_5;
726b8548 6849
ead03855 6850 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6851 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6852 vpmod->options_idx1 &= ~BIT_4;
6853}
6854
6855void
6856qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6857{
482c9dc7
QT		 6858 int rc;
6859
2d70c103
NB		 6860 if (!QLA_TGT_MODE_ENABLED())
6861 return;
6862
c9558869 6863 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6864 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6865 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6866 } else {
6867 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6868 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6869 }
6870
0e8cd71c
SK		 6871 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6872 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6873
6874 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6875 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6876 qlt_unknown_atio_work_fn);
6877
2d70c103 6878 qlt_clear_mode(base_vha);
482c9dc7
QT		 6879
6880 rc = btree_init32(&ha->tgt.host_map);
6881 if (rc)
83548fe2 6882 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6883 "Unable to initialize ha->host_map btree\n");
6884
6885 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6886}
6887
aa230bc5
AE		 6888irqreturn_t
6889qla83xx_msix_atio_q(int irq, void *dev_id)
6890{
6891 struct rsp_que *rsp;
6892 scsi_qla_host_t *vha;
6893 struct qla_hw_data *ha;
6894 unsigned long flags;
6895
6896 rsp = (struct rsp_que *) dev_id;
6897 ha = rsp->hw;
6898 vha = pci_get_drvdata(ha->pdev);
6899
2f424b9b 6900 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6901
2f424b9b 6902 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6903
2f424b9b 6904 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6905
6906 return IRQ_HANDLED;
6907}
6908
2f424b9b
QT		 6909static void
6910qlt_handle_abts_recv_work(struct work_struct *work)
6911{
6912 struct qla_tgt_sess_op *op = container_of(work,
6913 struct qla_tgt_sess_op, work);
6914 scsi_qla_host_t *vha = op->vha;
6915 struct qla_hw_data *ha = vha->hw;
6916 unsigned long flags;
6917
7c3f8fd1
QT		 6918 if (qla2x00_reset_active(vha) ||
6919 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 6920 return;
6921
6922 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6923 qlt_24xx_process_atio_queue(vha, 0);
6924 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6925
6926 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 6927 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 6928 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6929
6930 kfree(op);
2f424b9b
QT		 6931}
6932
6933void
82de802a
QT		 6934qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6935 response_t *pkt)
2f424b9b
QT		 6936{
6937 struct qla_tgt_sess_op *op;
6938
6939 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6940
6941 if (!op) {
6942 /* do not reach for ATIO queue here. This is best effort err
6943 * recovery at this point.
6944 */
82de802a 6945 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 6946 return;
6947 }
6948
6949 memcpy(&op->atio, pkt, sizeof(*pkt));
6950 op->vha = vha;
7c3f8fd1 6951 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 6952 op->rsp = rsp;
2f424b9b
QT		 6953 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6954 queue_work(qla_tgt_wq, &op->work);
6955 return;
6956}
6957
2d70c103
NB		 6958int
6959qlt_mem_alloc(struct qla_hw_data *ha)
6960{
6961 if (!QLA_TGT_MODE_ENABLED())
6962 return 0;
6963
6964 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
6965 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
6966 if (!ha->tgt.tgt_vp_map)
6967 return -ENOMEM;
6968
6969 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
6970 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
6971 &ha->tgt.atio_dma, GFP_KERNEL);
6972 if (!ha->tgt.atio_ring) {
6973 kfree(ha->tgt.tgt_vp_map);
6974 return -ENOMEM;
6975 }
6976 return 0;
6977}
6978
6979void
6980qlt_mem_free(struct qla_hw_data *ha)
6981{
6982 if (!QLA_TGT_MODE_ENABLED())
6983 return;
6984
6985 if (ha->tgt.atio_ring) {
6986 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
6987 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
6988 ha->tgt.atio_dma);
6989 }
6990 kfree(ha->tgt.tgt_vp_map);
6991}
6992
6993/* vport_slock to be held by the caller */
6994void
6995qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
6996{
482c9dc7
QT		 6997 void *slot;
6998 u32 key;
6999 int rc;
7000
2d70c103
NB		 7001 if (!QLA_TGT_MODE_ENABLED())
7002 return;
7003
482c9dc7
QT		 7004 key = vha->d_id.b24;
7005
2d70c103
NB		 7006 switch (cmd) {
7007 case SET_VP_IDX:
7008 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7009 break;
7010 case SET_AL_PA:
482c9dc7
QT		 7011 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7012 if (!slot) {
83548fe2 7013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7014 "Save vha in host_map %p %06x\n", vha, key);
7015 rc = btree_insert32(&vha->hw->tgt.host_map,
7016 key, vha, GFP_ATOMIC);
7017 if (rc)
83548fe2 7018 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7019 "Unable to insert s_id into host_map: %06x\n",
7020 key);
7021 return;
7022 }
83548fe2
QT		 7023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7024 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7025 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7026 break;
7027 case RESET_VP_IDX:
7028 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7029 break;
7030 case RESET_AL_PA:
83548fe2 7031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7032 "clear vha in host_map %p %06x\n", vha, key);
7033 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7034 if (slot)
7035 btree_remove32(&vha->hw->tgt.host_map, key);
7036 vha->d_id.b24 = 0;
2d70c103
NB		 7037 break;
7038 }
7039}
7040
482c9dc7
QT		 7041void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7042{
7043 unsigned long flags;
7044 struct qla_hw_data *ha = vha->hw;
7045
7046 if (!vha->d_id.b24) {
7047 spin_lock_irqsave(&ha->vport_slock, flags);
7048 vha->d_id = id;
7049 qlt_update_vp_map(vha, SET_AL_PA);
7050 spin_unlock_irqrestore(&ha->vport_slock, flags);
7051 } else if (vha->d_id.b24 != id.b24) {
7052 spin_lock_irqsave(&ha->vport_slock, flags);
7053 qlt_update_vp_map(vha, RESET_AL_PA);
7054 vha->d_id = id;
7055 qlt_update_vp_map(vha, SET_AL_PA);
7056 spin_unlock_irqrestore(&ha->vport_slock, flags);
7057 }
7058}
7059
2d70c103
NB		 7060static int __init qlt_parse_ini_mode(void)
7061{
7062 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7063 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7064 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7065 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7066 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7067 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7068 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7069 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7070 else
7071 return false;
7072
7073 return true;
7074}
7075
7076int __init qlt_init(void)
7077{
7078 int ret;
7079
7080 if (!qlt_parse_ini_mode()) {
7081 ql_log(ql_log_fatal, NULL, 0xe06b,
7082 "qlt_parse_ini_mode() failed\n");
7083 return -EINVAL;
7084 }
7085
7086 if (!QLA_TGT_MODE_ENABLED())
7087 return 0;
7088
2d70c103
NB		 7089 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7090 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7091 qla_tgt_mgmt_cmd), 0, NULL);
7092 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7093 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7094 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7095 return -ENOMEM;
2d70c103
NB		 7096 }
7097
b7bd104e 7098 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7099 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7100 0, NULL);
b7bd104e
AP		 7101
7102 if (!qla_tgt_plogi_cachep) {
7103 ql_log(ql_log_fatal, NULL, 0xe06d,
7104 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7105 ret = -ENOMEM;
7106 goto out_mgmt_cmd_cachep;
7107 }
7108
2d70c103
NB		 7109 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7110 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7111 if (!qla_tgt_mgmt_cmd_mempool) {
7112 ql_log(ql_log_fatal, NULL, 0xe06e,
7113 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7114 ret = -ENOMEM;
b7bd104e 7115 goto out_plogi_cachep;
2d70c103
NB		 7116 }
7117
7118 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7119 if (!qla_tgt_wq) {
7120 ql_log(ql_log_fatal, NULL, 0xe06f,
7121 "alloc_workqueue for qla_tgt_wq failed\n");
7122 ret = -ENOMEM;
7123 goto out_cmd_mempool;
7124 }
7125 /*
7126 * Return 1 to signal that initiator-mode is being disabled
7127 */
7128 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7129
7130out_cmd_mempool:
7131 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7132out_plogi_cachep:
7133 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7134out_mgmt_cmd_cachep:
7135 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7136 return ret;
7137}
7138
7139void qlt_exit(void)
7140{
7141 if (!QLA_TGT_MODE_ENABLED())
7142 return;
7143
7144 destroy_workqueue(qla_tgt_wq);
7145 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7146 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7147 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7148}
Linux 6.x block layer and io_uring tree(s)