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scsi: qla2xxx: Serialize session deletion by using work_lock
[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
7cf95f7e
QT		 78static int qla_sam_status = SAM_STAT_BUSY;
79static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
33e79977 80
2d70c103
NB		 81/*
82 * From scsi/fc/fc_fcp.h
83 */
84enum fcp_resp_rsp_codes {
85 FCP_TMF_CMPL = 0,
86 FCP_DATA_LEN_INVALID = 1,
87 FCP_CMND_FIELDS_INVALID = 2,
88 FCP_DATA_PARAM_MISMATCH = 3,
89 FCP_TMF_REJECTED = 4,
90 FCP_TMF_FAILED = 5,
91 FCP_TMF_INVALID_LUN = 9,
92};
93
94/*
95 * fc_pri_ta from scsi/fc/fc_fcp.h
96 */
97#define FCP_PTA_SIMPLE 0 /* simple task attribute */
98#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
99#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 100#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 101#define FCP_PTA_MASK 7 /* mask for task attribute field */
102#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
103#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
104
105/*
106 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
107 * must be called under HW lock and could unlock/lock it inside.
108 * It isn't an issue, since in the current implementation on the time when
109 * those functions are called:
110 *
111 * - Either context is IRQ and only IRQ handler can modify HW data,
112 * including rings related fields,
113 *
114 * - Or access to target mode variables from struct qla_tgt doesn't
115 * cross those functions boundaries, except tgt_stop, which
116 * additionally protected by irq_cmd_count.
117 */
118/* Predefs for callbacks handed to qla2xxx LLD */
119static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 120 struct atio_from_isp *pkt, uint8_t);
82de802a
QT		 121static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
122 response_t *pkt);
5d964837 123static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103 124 int fn, void *iocb, int flags);
82de802a 125static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
a07100e0 126 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
33e79977
QT		 127static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
128 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 129static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 130static void qlt_clear_tgt_db(struct qla_tgt *tgt);
82de802a 131static void qlt_send_notify_ack(struct qla_qpair *qpair,
a6ca8878
AP		 132 struct imm_ntfy_from_isp *ntfy,
133 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
134 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 135static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
136 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 137static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
138 fc_port_t *fcport, bool local);
139void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 140static void qlt_24xx_handle_abts(struct scsi_qla_host *,
141 struct abts_recv_from_24xx *);
82de802a
QT		 142static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
143 uint16_t);
8f6fc8d4 144
2d70c103
NB		 145/*
146 * Global Variables
147 */
2d70c103 148static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b5d15312 149struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 150static mempool_t *qla_tgt_mgmt_cmd_mempool;
151static struct workqueue_struct *qla_tgt_wq;
152static DEFINE_MUTEX(qla_tgt_mutex);
153static LIST_HEAD(qla_tgt_glist);
154
be25152c
QT		 155static const char *prot_op_str(u32 prot_op)
156{
157 switch (prot_op) {
158 case TARGET_PROT_NORMAL: return "NORMAL";
159 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
160 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
161 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
162 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
163 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
164 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
165 default: return "UNKNOWN";
166 }
167}
168
df673274
AP		 169/* This API intentionally takes dest as a parameter, rather than returning
170 * int value to avoid caller forgetting to issue wmb() after the store */
171void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
172{
173 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
174 *dest = atomic_inc_return(&base_vha->generation_tick);
175 /* memory barrier */
176 wmb();
177}
178
2d70c103
NB		 179/* Might release hw lock, then reaquire!! */
180static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
181{
182 /* Send marker if required */
183 if (unlikely(vha->marker_needed != 0)) {
184 int rc = qla2x00_issue_marker(vha, vha_locked);
185 if (rc != QLA_SUCCESS) {
186 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
187 "qla_target(%d): issue_marker() failed\n",
188 vha->vp_idx);
189 }
190 return rc;
191 }
192 return QLA_SUCCESS;
193}
194
195static inline
196struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
197 uint8_t *d_id)
198{
482c9dc7
QT		 199 struct scsi_qla_host *host;
200 uint32_t key = 0;
2d70c103 201
482c9dc7
QT		 202 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
203 (vha->d_id.b.al_pa == d_id[2]))
2d70c103
NB		 204 return vha;
205
482c9dc7
QT		 206 key = (uint32_t)d_id[0] << 16;
207 key |= (uint32_t)d_id[1] << 8;
208 key |= (uint32_t)d_id[2];
2d70c103 209
482c9dc7
QT		 210 host = btree_lookup32(&vha->hw->tgt.host_map, key);
211 if (!host)
604e2e57 212 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
83548fe2 213 "Unable to find host %06x\n", key);
482c9dc7
QT		 214
215 return host;
2d70c103
NB		 216}
217
218static inline
219struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
220 uint16_t vp_idx)
221{
222 struct qla_hw_data *ha = vha->hw;
223
224 if (vha->vp_idx == vp_idx)
225 return vha;
226
227 BUG_ON(ha->tgt.tgt_vp_map == NULL);
228 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
229 return ha->tgt.tgt_vp_map[vp_idx].vha;
230
231 return NULL;
232}
233
33e79977
QT		 234static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
235{
236 unsigned long flags;
237
238 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
239
240 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 241 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
242 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 243 vha->hw->tgt.num_pend_cmds;
244 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
245}
246static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
247{
248 unsigned long flags;
249
250 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
251 vha->hw->tgt.num_pend_cmds--;
252 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
253}
254
41dc529a
QT		 255
256static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
82de802a 257 struct atio_from_isp *atio, uint8_t ha_locked)
41dc529a
QT		 258{
259 struct qla_tgt_sess_op *u;
260 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
261 unsigned long flags;
262
263 if (tgt->tgt_stop) {
83548fe2
QT		 264 ql_dbg(ql_dbg_async, vha, 0x502c,
265 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
266 vha->vp_idx);
41dc529a
QT		 267 goto out_term;
268 }
269
270 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 271 if (u == NULL)
41dc529a 272 goto out_term;
41dc529a
QT		 273
274 u->vha = vha;
275 memcpy(&u->atio, atio, sizeof(*atio));
276 INIT_LIST_HEAD(&u->cmd_list);
277
278 spin_lock_irqsave(&vha->cmd_list_lock, flags);
279 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
280 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
281
282 schedule_delayed_work(&vha->unknown_atio_work, 1);
283
284out:
285 return;
286
287out_term:
82de802a 288 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
41dc529a
QT		 289 goto out;
290}
291
292static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
293 uint8_t ha_locked)
294{
295 struct qla_tgt_sess_op *u, *t;
296 scsi_qla_host_t *host;
297 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
298 unsigned long flags;
299 uint8_t queued = 0;
300
301 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
302 if (u->aborted) {
83548fe2
QT		 303 ql_dbg(ql_dbg_async, vha, 0x502e,
304 "Freeing unknown %s %p, because of Abort\n",
41dc529a 305 "ATIO_TYPE7", u);
82de802a
QT		 306 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
307 &u->atio, ha_locked, 0);
41dc529a
QT		 308 goto abort;
309 }
310
311 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
312 if (host != NULL) {
604e2e57 313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
83548fe2 314 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 315 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
316 } else if (tgt->tgt_stop) {
604e2e57 317 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
83548fe2
QT		 318 "Freeing unknown %s %p, because tgt is being stopped\n",
319 "ATIO_TYPE7", u);
82de802a
QT		 320 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
321 &u->atio, ha_locked, 0);
41dc529a 322 } else {
604e2e57 323 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
83548fe2 324 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 325 if (!queued) {
326 queued = 1;
327 schedule_delayed_work(&vha->unknown_atio_work,
328 1);
329 }
330 continue;
331 }
332
333abort:
334 spin_lock_irqsave(&vha->cmd_list_lock, flags);
335 list_del(&u->cmd_list);
336 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
337 kfree(u);
338 }
339}
340
341void qlt_unknown_atio_work_fn(struct work_struct *work)
342{
343 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
344 struct scsi_qla_host, unknown_atio_work);
345
346 qlt_try_to_dequeue_unknown_atios(vha, 0);
347}
348
3bb67df5 349static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 350 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 351{
f83adb61
QT		 352 ql_dbg(ql_dbg_tgt, vha, 0xe072,
353 "%s: qla_target(%d): type %x ox_id %04x\n",
354 __func__, vha->vp_idx, atio->u.raw.entry_type,
355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
356
2d70c103
NB		 357 switch (atio->u.raw.entry_type) {
358 case ATIO_TYPE7:
359 {
360 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
361 atio->u.isp24.fcp_hdr.d_id);
362 if (unlikely(NULL == host)) {
363 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
364 "qla_target(%d): Received ATIO_TYPE7 "
365 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
366 atio->u.isp24.fcp_hdr.d_id[0],
367 atio->u.isp24.fcp_hdr.d_id[1],
368 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 369
370
371 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 372 break;
373 }
41dc529a
QT		 374 if (unlikely(!list_empty(&vha->unknown_atio_list)))
375 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
376
2f424b9b 377 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 378 break;
379 }
380
381 case IMMED_NOTIFY_TYPE:
382 {
383 struct scsi_qla_host *host = vha;
384 struct imm_ntfy_from_isp *entry =
385 (struct imm_ntfy_from_isp *)atio;
386
82de802a
QT		 387 qlt_issue_marker(vha, ha_locked);
388
2d70c103
NB		 389 if ((entry->u.isp24.vp_index != 0xFF) &&
390 (entry->u.isp24.nport_handle != 0xFFFF)) {
391 host = qlt_find_host_by_vp_idx(vha,
392 entry->u.isp24.vp_index);
393 if (unlikely(!host)) {
394 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
395 "qla_target(%d): Received "
396 "ATIO (IMMED_NOTIFY_TYPE) "
397 "with unknown vp_index %d\n",
398 vha->vp_idx, entry->u.isp24.vp_index);
399 break;
400 }
401 }
2f424b9b 402 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 403 break;
404 }
405
41dc529a
QT		 406 case VP_RPT_ID_IOCB_TYPE:
407 qla24xx_report_id_acquisition(vha,
408 (struct vp_rpt_id_entry_24xx *)atio);
409 break;
410
411 case ABTS_RECV_24XX:
412 {
413 struct abts_recv_from_24xx *entry =
414 (struct abts_recv_from_24xx *)atio;
415 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
416 entry->vp_index);
8f6fc8d4
QT		 417 unsigned long flags;
418
41dc529a 419 if (unlikely(!host)) {
83548fe2 420 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 421 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
422 "received, with unknown vp_index %d\n",
423 vha->vp_idx, entry->vp_index);
424 break;
425 }
8f6fc8d4
QT		 426 if (!ha_locked)
427 spin_lock_irqsave(&host->hw->hardware_lock, flags);
428 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
429 if (!ha_locked)
430 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 431 break;
41dc529a
QT		 432 }
433
434 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
435
2d70c103
NB		 436 default:
437 ql_dbg(ql_dbg_tgt, vha, 0xe040,
438 "qla_target(%d): Received unknown ATIO atio "
439 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
440 break;
441 }
442
3bb67df5 443 return false;
2d70c103
NB		 444}
445
82de802a
QT		 446void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
447 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 448{
449 switch (pkt->entry_type) {
f83adb61
QT		 450 case CTIO_CRC2:
451 ql_dbg(ql_dbg_tgt, vha, 0xe073,
452 "qla_target(%d):%s: CRC2 Response pkt\n",
453 vha->vp_idx, __func__);
81881861 454 /* fall through */
2d70c103
NB		 455 case CTIO_TYPE7:
456 {
457 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
458 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
459 entry->vp_index);
460 if (unlikely(!host)) {
461 ql_dbg(ql_dbg_tgt, vha, 0xe041,
462 "qla_target(%d): Response pkt (CTIO_TYPE7) "
463 "received, with unknown vp_index %d\n",
464 vha->vp_idx, entry->vp_index);
465 break;
466 }
82de802a 467 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 468 break;
469 }
470
471 case IMMED_NOTIFY_TYPE:
472 {
473 struct scsi_qla_host *host = vha;
474 struct imm_ntfy_from_isp *entry =
475 (struct imm_ntfy_from_isp *)pkt;
476
477 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
478 if (unlikely(!host)) {
479 ql_dbg(ql_dbg_tgt, vha, 0xe042,
480 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
481 "received, with unknown vp_index %d\n",
482 vha->vp_idx, entry->u.isp24.vp_index);
483 break;
484 }
82de802a 485 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 486 break;
487 }
488
489 case NOTIFY_ACK_TYPE:
490 {
491 struct scsi_qla_host *host = vha;
492 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
493
494 if (0xFF != entry->u.isp24.vp_index) {
495 host = qlt_find_host_by_vp_idx(vha,
496 entry->u.isp24.vp_index);
497 if (unlikely(!host)) {
498 ql_dbg(ql_dbg_tgt, vha, 0xe043,
499 "qla_target(%d): Response "
500 "pkt (NOTIFY_ACK_TYPE) "
501 "received, with unknown "
502 "vp_index %d\n", vha->vp_idx,
503 entry->u.isp24.vp_index);
504 break;
505 }
506 }
82de802a 507 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 508 break;
509 }
510
511 case ABTS_RECV_24XX:
512 {
513 struct abts_recv_from_24xx *entry =
514 (struct abts_recv_from_24xx *)pkt;
515 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
516 entry->vp_index);
517 if (unlikely(!host)) {
518 ql_dbg(ql_dbg_tgt, vha, 0xe044,
519 "qla_target(%d): Response pkt "
520 "(ABTS_RECV_24XX) received, with unknown "
521 "vp_index %d\n", vha->vp_idx, entry->vp_index);
522 break;
523 }
82de802a 524 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 525 break;
526 }
527
528 case ABTS_RESP_24XX:
529 {
530 struct abts_resp_to_24xx *entry =
531 (struct abts_resp_to_24xx *)pkt;
532 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
533 entry->vp_index);
534 if (unlikely(!host)) {
535 ql_dbg(ql_dbg_tgt, vha, 0xe045,
536 "qla_target(%d): Response pkt "
537 "(ABTS_RECV_24XX) received, with unknown "
538 "vp_index %d\n", vha->vp_idx, entry->vp_index);
539 break;
540 }
82de802a 541 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 542 break;
543 }
544
545 default:
82de802a 546 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 547 break;
548 }
549
550}
551
b7bd104e
AP		 552/*
553 * All qlt_plogi_ack_t operations are protected by hardware_lock
554 */
726b8548
QT		 555static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
556 struct imm_ntfy_from_isp *ntfy, int type)
557{
558 struct qla_work_evt *e;
559 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
560 if (!e)
561 return QLA_FUNCTION_FAILED;
562
563 e->u.nack.fcport = fcport;
564 e->u.nack.type = type;
565 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
566 return qla2x00_post_work(vha, e);
567}
568
569static
25ff6af1 570void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 571{
726b8548 572 struct srb *sp = (struct srb *)s;
25ff6af1 573 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 574 unsigned long flags;
575
83548fe2
QT		 576 ql_dbg(ql_dbg_disc, vha, 0x20f2,
577 "Async done-%s res %x %8phC type %d\n",
578 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 579
580 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
581 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 582 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 583
584 switch (sp->type) {
585 case SRB_NACK_PLOGI:
586 sp->fcport->login_gen++;
587 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
588 sp->fcport->logout_on_delete = 1;
5b33469a 589 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
3515832c 590 sp->fcport->send_els_logo = 0;
726b8548
QT		 591 break;
592
593 case SRB_NACK_PRLI:
594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
595 sp->fcport->deleted = 0;
3515832c 596 sp->fcport->send_els_logo = 0;
726b8548
QT		 597
598 if (!sp->fcport->login_succ &&
599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
600 sp->fcport->login_succ = 1;
601
602 vha->fcport_count++;
603
604 if (!IS_IIDMA_CAPABLE(vha->hw) ||
605 !vha->hw->flags.gpsc_supported) {
83548fe2
QT		 606 ql_dbg(ql_dbg_disc, vha, 0x20f3,
607 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
608 __func__, __LINE__,
609 sp->fcport->port_name,
610 vha->fcport_count);
9cd883f0 611 sp->fcport->disc_state = DSC_UPD_FCPORT;
726b8548
QT		 612 qla24xx_post_upd_fcport_work(vha, sp->fcport);
613 } else {
83548fe2
QT		 614 ql_dbg(ql_dbg_disc, vha, 0x20f5,
615 "%s %d %8phC post gpsc fcp_cnt %d\n",
616 __func__, __LINE__,
617 sp->fcport->port_name,
618 vha->fcport_count);
726b8548
QT		 619
620 qla24xx_post_gpsc_work(vha, sp->fcport);
621 }
622 }
623 break;
624
625 case SRB_NACK_LOGO:
626 sp->fcport->login_gen++;
627 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
628 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
629 break;
630 }
631 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
632
25ff6af1 633 sp->free(sp);
726b8548
QT		 634}
635
636int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
637 struct imm_ntfy_from_isp *ntfy, int type)
638{
639 int rval = QLA_FUNCTION_FAILED;
640 srb_t *sp;
641 char *c = NULL;
642
643 fcport->flags |= FCF_ASYNC_SENT;
644 switch (type) {
645 case SRB_NACK_PLOGI:
646 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
647 c = "PLOGI";
648 break;
649 case SRB_NACK_PRLI:
650 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 651 fcport->deleted = 0;
726b8548
QT		 652 c = "PRLI";
653 break;
654 case SRB_NACK_LOGO:
655 fcport->fw_login_state = DSC_LS_LOGO_PEND;
656 c = "LOGO";
657 break;
658 }
659
660 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
661 if (!sp)
662 goto done;
663
664 sp->type = type;
665 sp->name = "nack";
666
667 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
668
669 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
2e01d0ba 670 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 671 sp->done = qla2x00_async_nack_sp_done;
672
673 rval = qla2x00_start_sp(sp);
674 if (rval != QLA_SUCCESS)
675 goto done_free_sp;
676
83548fe2
QT		 677 ql_dbg(ql_dbg_disc, vha, 0x20f4,
678 "Async-%s %8phC hndl %x %s\n",
679 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 680
681 return rval;
682
683done_free_sp:
25ff6af1 684 sp->free(sp);
726b8548
QT		 685done:
686 fcport->flags &= ~FCF_ASYNC_SENT;
687 return rval;
688}
689
690void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
691{
692 fc_port_t *t;
693 unsigned long flags;
694
695 switch (e->u.nack.type) {
696 case SRB_NACK_PRLI:
697 mutex_lock(&vha->vha_tgt.tgt_mutex);
698 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
699 mutex_unlock(&vha->vha_tgt.tgt_mutex);
700 if (t) {
83548fe2 701 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 702 "%s create sess success %p", __func__, t);
703 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
704 /* create sess has an extra kref */
705 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
706 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
707 }
708 break;
709 }
710 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
711 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
712}
713
714void qla24xx_delete_sess_fn(struct work_struct *work)
715{
716 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
717 struct qla_hw_data *ha = fcport->vha->hw;
718 unsigned long flags;
719
720 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
721
722 if (fcport->se_sess) {
723 ha->tgt.tgt_ops->shutdown_sess(fcport);
724 ha->tgt.tgt_ops->put_sess(fcport);
725 } else {
726 qlt_unreg_sess(fcport);
727 }
728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
729}
730
731/*
732 * Called from qla2x00_reg_remote_port()
733 */
734void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
735{
736 struct qla_hw_data *ha = vha->hw;
737 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
738 struct fc_port *sess = fcport;
739 unsigned long flags;
740
741 if (!vha->hw->tgt.tgt_ops)
742 return;
743
744 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
745 if (tgt->tgt_stop) {
746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
747 return;
748 }
749
750 if (fcport->disc_state == DSC_DELETE_PEND) {
751 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
752 return;
753 }
754
755 if (!sess->se_sess) {
756 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
757
758 mutex_lock(&vha->vha_tgt.tgt_mutex);
759 sess = qlt_create_sess(vha, fcport, false);
760 mutex_unlock(&vha->vha_tgt.tgt_mutex);
761
762 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
763 } else {
764 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
765 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
766 return;
767 }
768
769 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 770 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 771 "%s: kref_get fail sess %8phC \n",
772 __func__, sess->port_name);
773 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
774 return;
775 }
776
777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
778 "qla_target(%u): %ssession for port %8phC "
779 "(loop ID %d) reappeared\n", vha->vp_idx,
780 sess->local ? "local " : "", sess->port_name, sess->loop_id);
781
782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
783 "Reappeared sess %p\n", sess);
784
785 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
786 fcport->loop_id,
787 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
788 }
789
790 if (sess && sess->local) {
791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
792 "qla_target(%u): local session for "
793 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
794 fcport->port_name, sess->loop_id);
795 sess->local = 0;
796 }
797 ha->tgt.tgt_ops->put_sess(sess);
798 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
799}
b7bd104e
AP		 800
801/*
802 * This is a zero-base ref-counting solution, since hardware_lock
803 * guarantees that ref_count is not modified concurrently.
804 * Upon successful return content of iocb is undefined
805 */
5d964837 806static struct qlt_plogi_ack_t *
b7bd104e
AP		 807qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
808 struct imm_ntfy_from_isp *iocb)
809{
5d964837 810 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 811
812 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
813 if (pla->id.b24 == id->b24) {
814 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 815 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 816 return pla;
817 }
818 }
819
820 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
821 if (!pla) {
822 ql_dbg(ql_dbg_async, vha, 0x5088,
823 "qla_target(%d): Allocation of plogi_ack failed\n",
824 vha->vp_idx);
825 return NULL;
826 }
827
5d964837 828 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 829 pla->id = *id;
830 list_add_tail(&pla->list, &vha->plogi_ack_list);
831
832 return pla;
833}
834
726b8548 835void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 836 struct qlt_plogi_ack_t *pla)
b7bd104e 837{
5d964837 838 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 839 port_id_t port_id;
840 uint16_t loop_id;
841 fc_port_t *fcport = pla->fcport;
842
b7bd104e
AP		 843 BUG_ON(!pla->ref_count);
844 pla->ref_count--;
845
846 if (pla->ref_count)
847 return;
848
726b8548 849 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 850 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 851 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
852 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
853 iocb->u.isp24.port_id[0],
854 le16_to_cpu(iocb->u.isp24.nport_handle),
855 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 856
857 port_id.b.domain = iocb->u.isp24.port_id[2];
858 port_id.b.area = iocb->u.isp24.port_id[1];
859 port_id.b.al_pa = iocb->u.isp24.port_id[0];
860 port_id.b.rsvd_1 = 0;
861
862 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
863
864 fcport->loop_id = loop_id;
865 fcport->d_id = port_id;
9cd883f0
QT		 866 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
867 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
868 else
869 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
726b8548
QT		 870
871 list_for_each_entry(fcport, &vha->vp_fcports, list) {
872 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
873 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
874 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
875 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
876 }
b7bd104e
AP		 877
878 list_del(&pla->list);
879 kmem_cache_free(qla_tgt_plogi_cachep, pla);
880}
881
726b8548 882void
5d964837
QT		 883qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
884 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 885{
5d964837 886 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 887 /* Inc ref_count first because link might already be pointing at pla */
888 pla->ref_count++;
889
726b8548
QT		 890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
891 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
892 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
893 sess, link, sess->port_name,
894 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
895 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
896 pla->ref_count, pla, link);
897
5ef696aa
QT		 898 if (link == QLT_PLOGI_LINK_CONFLICT) {
899 switch (sess->disc_state) {
900 case DSC_DELETED:
901 case DSC_DELETE_PEND:
902 pla->ref_count--;
903 return;
904 default:
905 break;
906 }
907 }
908
b7bd104e
AP		 909 if (sess->plogi_link[link])
910 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
911
726b8548
QT		 912 if (link == QLT_PLOGI_LINK_SAME_WWN)
913 pla->fcport = sess;
b7bd104e
AP		 914
915 sess->plogi_link[link] = pla;
916}
917
71cdc079
AP		 918typedef struct {
919 /* These fields must be initialized by the caller */
920 port_id_t id;
921 /*
922 * number of cmds dropped while we were waiting for
923 * initiator to ack LOGO initialize to 1 if LOGO is
924 * triggered by a command, otherwise, to 0
925 */
926 int cmd_count;
927
928 /* These fields are used by callee */
929 struct list_head list;
930} qlt_port_logo_t;
931
932static void
933qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
934{
935 qlt_port_logo_t *tmp;
936 int res;
937
938 mutex_lock(&vha->vha_tgt.tgt_mutex);
939
940 list_for_each_entry(tmp, &vha->logo_list, list) {
941 if (tmp->id.b24 == logo->id.b24) {
942 tmp->cmd_count += logo->cmd_count;
943 mutex_unlock(&vha->vha_tgt.tgt_mutex);
944 return;
945 }
946 }
947
948 list_add_tail(&logo->list, &vha->logo_list);
949
950 mutex_unlock(&vha->vha_tgt.tgt_mutex);
951
952 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
953
954 mutex_lock(&vha->vha_tgt.tgt_mutex);
955 list_del(&logo->list);
956 mutex_unlock(&vha->vha_tgt.tgt_mutex);
957
b7bd104e
AP		 958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
959 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
960 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
961 logo->cmd_count, res);
71cdc079
AP		 962}
963
2d70c103
NB		 964static void qlt_free_session_done(struct work_struct *work)
965{
5d964837 966 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 967 free_work);
968 struct qla_tgt *tgt = sess->tgt;
969 struct scsi_qla_host *vha = sess->vha;
970 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 971 unsigned long flags;
972 bool logout_started = false;
41dc529a 973 scsi_qla_host_t *base_vha;
9cd883f0
QT		 974 struct qlt_plogi_ack_t *own =
975 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
a6ca8878
AP		 976
977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
978 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 979 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 980 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 981 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 982 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 983 sess->send_els_logo);
2d70c103 984
726b8548 985 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 986 if (sess->send_els_logo) {
987 qlt_port_logo_t logo;
71cdc079 988
41dc529a
QT		 989 logo.id = sess->d_id;
990 logo.cmd_count = 0;
991 qlt_send_first_logo(vha, &logo);
992 }
993
ba743f91 994 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 995 int rc;
996
9cd883f0
QT		 997 if (!own ||
998 (own &&
999 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
1000 rc = qla2x00_post_async_logout_work(vha, sess,
1001 NULL);
1002 if (rc != QLA_SUCCESS)
1003 ql_log(ql_log_warn, vha, 0xf085,
1004 "Schedule logo failed sess %p rc %d\n",
1005 sess, rc);
1006 else
1007 logout_started = true;
1008 } else if (own && (own->iocb.u.isp24.status_subcode ==
1009 ELS_PRLI) && ha->flags.rida_fmt2) {
1010 rc = qla2x00_post_async_prlo_work(vha, sess,
1011 NULL);
1012 if (rc != QLA_SUCCESS)
1013 ql_log(ql_log_warn, vha, 0xf085,
1014 "Schedule PRLO failed sess %p rc %d\n",
1015 sess, rc);
1016 else
1017 logout_started = true;
1018 }
41dc529a 1019 }
726b8548 1020 }
a6ca8878 1021
2d70c103
NB		 1022 /*
1023 * Release the target session for FC Nexus from fabric module code.
1024 */
1025 if (sess->se_sess != NULL)
1026 ha->tgt.tgt_ops->free_session(sess);
1027
a6ca8878
AP		 1028 if (logout_started) {
1029 bool traced = false;
1030
6aa7de05 1031 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878
AP		 1032 if (!traced) {
1033 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1034 "%s: waiting for sess %p logout\n",
1035 __func__, sess);
1036 traced = true;
1037 }
1038 msleep(100);
1039 }
1040
726b8548 1041 ql_dbg(ql_dbg_disc, vha, 0xf087,
9cd883f0 1042 "%s: sess %p logout completed\n", __func__, sess);
41dc529a
QT		 1043 }
1044
1045 if (sess->logo_ack_needed) {
1046 sess->logo_ack_needed = 0;
1047 qla24xx_async_notify_ack(vha, sess,
1048 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1049 }
1050
726b8548
QT		 1051 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1052 if (sess->se_sess) {
1053 sess->se_sess = NULL;
1054 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1055 tgt->sess_count--;
1056 }
1057
1058 sess->disc_state = DSC_DELETED;
1059 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1060 sess->deleted = QLA_SESS_DELETED;
1061 sess->login_retry = vha->hw->login_retry_count;
1062
1063 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1064 vha->fcport_count--;
1065 sess->login_succ = 0;
1066 }
1067
ba743f91 1068 qla2x00_clear_loop_id(sess);
726b8548
QT		 1069
1070 if (sess->conflict) {
1071 sess->conflict->login_pause = 0;
1072 sess->conflict = NULL;
1073 if (!test_bit(UNLOADING, &vha->dpc_flags))
1074 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1075 }
1076
b7bd104e 1077 {
5d964837 1078 struct qlt_plogi_ack_t *con =
b7bd104e 1079 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1080 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1081
1082 if (con) {
5d964837 1083 iocb = &con->iocb;
b7bd104e 1084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1085 "se_sess %p / sess %p port %8phC is gone,"
1086 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1087 sess->se_sess, sess, sess->port_name,
1088 own ? "releasing own PLOGI" : "no own PLOGI pending",
1089 own ? own->ref_count : -1,
1090 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1091 qlt_plogi_ack_unref(vha, con);
726b8548 1092 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1093 } else {
1094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1095 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1096 sess->se_sess, sess, sess->port_name,
1097 own ? "releasing own PLOGI" :
1098 "no own PLOGI pending",
1099 own ? own->ref_count : -1);
1100 }
1101
726b8548
QT		 1102 if (own) {
1103 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1104 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1105 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1106 }
b7bd104e 1107 }
5d964837
QT		 1108 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1109
2d70c103 1110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1111 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1112 sess, sess->port_name, vha->fcport_count);
2d70c103 1113
726b8548 1114 if (tgt && (tgt->sess_count == 0))
2d70c103 1115 wake_up_all(&tgt->waitQ);
726b8548
QT		 1116
1117 if (vha->fcport_count == 0)
1118 wake_up_all(&vha->fcport_waitQ);
1119
41dc529a
QT		 1120 base_vha = pci_get_drvdata(ha->pdev);
1121 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1122 return;
1123
a4239945
QT		 1124 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1125 switch (vha->host->active_mode) {
1126 case MODE_INITIATOR:
1127 case MODE_DUAL:
1128 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1129 qla2xxx_wake_dpc(vha);
1130 break;
1131 case MODE_TARGET:
1132 default:
1133 /* no-op */
1134 break;
1135 }
726b8548 1136 }
2d70c103
NB		 1137}
1138
7560151b 1139/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1140void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1141{
1142 struct scsi_qla_host *vha = sess->vha;
1143
83548fe2 1144 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1145 "%s sess %p for deletion %8phC\n",
1146 __func__, sess, sess->port_name);
1147
36c78452
QT		 1148 if (sess->se_sess)
1149 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1150
5d964837
QT		 1151 qla2x00_mark_device_lost(vha, sess, 1, 1);
1152
a6ca8878 1153 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1154 sess->disc_state = DSC_DELETE_PEND;
1155 sess->last_rscn_gen = sess->rscn_gen;
1156 sess->last_login_gen = sess->login_gen;
2d70c103 1157
a5d42f4c
DG		 1158 if (sess->nvme_flag & NVME_FLAG_REGISTERED)
1159 schedule_work(&sess->nvme_del_work);
1160
2d70c103
NB		 1161 INIT_WORK(&sess->free_work, qlt_free_session_done);
1162 schedule_work(&sess->free_work);
1163}
5d964837 1164EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1165
2d70c103
NB		 1166static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1167{
1168 struct qla_hw_data *ha = vha->hw;
5d964837 1169 struct fc_port *sess = NULL;
2d70c103
NB		 1170 uint16_t loop_id;
1171 int res = 0;
1172 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1173 unsigned long flags;
2d70c103
NB		 1174
1175 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1176 if (loop_id == 0xFFFF) {
2d70c103 1177 /* Global event */
b2032fd5 1178 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1179 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1180 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1181 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1182 } else {
7560151b 1183 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1184 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1185 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1186 }
1187
1188 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1189 "Using sess for qla_tgt_reset: %p\n", sess);
1190 if (!sess) {
1191 res = -ESRCH;
1192 return res;
1193 }
1194
1195 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1196 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1197 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1198 mcmd, loop_id);
1199
bb1181c9 1200 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1201}
1202
726b8548
QT		 1203static void qla24xx_chk_fcp_state(struct fc_port *sess)
1204{
7c3f8fd1 1205 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1206 sess->logout_on_delete = 0;
1207 sess->logo_ack_needed = 0;
1208 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1209 sess->scan_state = 0;
1210 }
1211}
1212
7560151b 1213/* ha->tgt.sess_lock supposed to be held on entry */
94cff6e1 1214void qlt_schedule_sess_for_deletion(struct fc_port *sess)
2d70c103
NB		 1215{
1216 struct qla_tgt *tgt = sess->tgt;
d8630bb9 1217 unsigned long flags;
2d70c103 1218
726b8548
QT		 1219 if (sess->disc_state == DSC_DELETE_PEND)
1220 return;
1221
1222 if (sess->disc_state == DSC_DELETED) {
1223 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1224 wake_up_all(&tgt->waitQ);
1225 if (sess->vha->fcport_count == 0)
1226 wake_up_all(&sess->vha->fcport_waitQ);
1227
1228 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1229 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1230 return;
1231 }
2d70c103 1232
726b8548
QT		 1233 if (sess->deleted == QLA_SESS_DELETED)
1234 sess->logout_on_delete = 0;
1235
d8630bb9
QT		 1236 spin_lock_irqsave(&sess->vha->work_lock, flags);
1237 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1238 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1239 return;
1240 }
726b8548 1241 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
d8630bb9
QT		 1242 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1243
1244 sess->disc_state = DSC_DELETE_PEND;
1245
726b8548 1246 qla24xx_chk_fcp_state(sess);
2d70c103 1247
726b8548
QT		 1248 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1249 "Scheduling sess %p for deletion\n", sess);
2d70c103 1250
9cd883f0
QT		 1251 /* use cancel to push work element through before re-queue */
1252 cancel_work_sync(&sess->del_work);
a01c77d2
QT		 1253 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1254 queue_work(sess->vha->hw->wq, &sess->del_work);
726b8548 1255}
2d70c103 1256
7560151b 1257/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1258static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1259{
5d964837
QT		 1260 struct fc_port *sess;
1261 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1262
5d964837
QT		 1263 list_for_each_entry(sess, &vha->vp_fcports, list) {
1264 if (sess->se_sess)
94cff6e1 1265 qlt_schedule_sess_for_deletion(sess);
5d964837 1266 }
2d70c103
NB		 1267
1268 /* At this point tgt could be already dead */
1269}
1270
1271static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1272 uint16_t *loop_id)
1273{
1274 struct qla_hw_data *ha = vha->hw;
1275 dma_addr_t gid_list_dma;
1276 struct gid_list_info *gid_list;
1277 char *id_iter;
1278 int res, rc, i;
1279 uint16_t entries;
1280
1281 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1282 &gid_list_dma, GFP_KERNEL);
1283 if (!gid_list) {
1284 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1285 "qla_target(%d): DMA Alloc failed of %u\n",
1286 vha->vp_idx, qla2x00_gid_list_size(ha));
1287 return -ENOMEM;
1288 }
1289
1290 /* Get list of logged in devices */
15f30a57 1291 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1292 if (rc != QLA_SUCCESS) {
1293 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1294 "qla_target(%d): get_id_list() failed: %x\n",
1295 vha->vp_idx, rc);
71cdc079 1296 res = -EBUSY;
2d70c103
NB		 1297 goto out_free_id_list;
1298 }
1299
1300 id_iter = (char *)gid_list;
71cdc079 1301 res = -ENOENT;
2d70c103
NB		 1302 for (i = 0; i < entries; i++) {
1303 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1304 if ((gid->al_pa == s_id[2]) &&
1305 (gid->area == s_id[1]) &&
1306 (gid->domain == s_id[0])) {
1307 *loop_id = le16_to_cpu(gid->loop_id);
1308 res = 0;
1309 break;
1310 }
1311 id_iter += ha->gid_list_info_size;
1312 }
1313
1314out_free_id_list:
1315 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1316 gid_list, gid_list_dma);
1317 return res;
1318}
1319
2d70c103
NB		 1320/*
1321 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1322 * Caller must put it.
1323 */
5d964837 1324static struct fc_port *qlt_create_sess(
2d70c103
NB		 1325 struct scsi_qla_host *vha,
1326 fc_port_t *fcport,
1327 bool local)
1328{
1329 struct qla_hw_data *ha = vha->hw;
726b8548 1330 struct fc_port *sess = fcport;
2d70c103 1331 unsigned long flags;
2d70c103 1332
726b8548
QT		 1333 if (vha->vha_tgt.qla_tgt->tgt_stop)
1334 return NULL;
2d70c103 1335
726b8548
QT		 1336 if (fcport->se_sess) {
1337 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1338 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1339 "%s: kref_get_unless_zero failed for %8phC\n",
1340 __func__, sess->port_name);
1341 return NULL;
2d70c103 1342 }
726b8548 1343 return fcport;
2d70c103 1344 }
0e8cd71c 1345 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1346 sess->local = local;
a6ca8878 1347
726b8548
QT		 1348 /*
1349 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1350 * session eventually ends and release corresponding nport handle.
1351 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1352 * code will adjust these flags as necessary.
1353 */
a6ca8878
AP		 1354 sess->logout_on_delete = 1;
1355 sess->keep_nport_handle = 0;
726b8548 1356 sess->logout_completed = 0;
2d70c103 1357
726b8548
QT		 1358 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1359 &fcport->port_name[0], sess) < 0) {
83548fe2 1360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1361 "(%d) %8phC check_initiator_node_acl failed\n",
1362 vha->vp_idx, fcport->port_name);
1363 return NULL;
1364 } else {
1365 kref_init(&fcport->sess_kref);
1366 /*
1367 * Take an extra reference to ->sess_kref here to handle
1368 * fc_port access across ->tgt.sess_lock reaquire.
1369 */
1370 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1371 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1372 "%s: kref_get_unless_zero failed for %8phC\n",
1373 __func__, sess->port_name);
1374 return NULL;
1375 }
2d70c103 1376
726b8548
QT		 1377 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1378 if (!IS_SW_RESV_ADDR(sess->d_id))
1379 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1380
726b8548
QT		 1381 qlt_do_generation_tick(vha, &sess->generation);
1382 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1383 }
1384
1385 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1386 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1387 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1388 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1389
1390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1391 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1392 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1393 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1394 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1395 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1396
1397 return sess;
1398}
1399
df673274
AP		 1400/*
1401 * max_gen - specifies maximum session generation
1402 * at which this deletion requestion is still valid
1403 */
1404void
1405qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1406{
0e8cd71c 1407 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1408 struct fc_port *sess = fcport;
7560151b 1409 unsigned long flags;
2d70c103
NB		 1410
1411 if (!vha->hw->tgt.tgt_ops)
1412 return;
1413
b2032fd5 1414 if (!tgt)
2d70c103
NB		 1415 return;
1416
7560151b 1417 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1418 if (tgt->tgt_stop) {
7560151b 1419 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1420 return;
1421 }
5d964837 1422 if (!sess->se_sess) {
7560151b 1423 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1424 return;
1425 }
1426
df673274 1427 if (max_gen - sess->generation < 0) {
7560151b 1428 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1429 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1430 "Ignoring stale deletion request for se_sess %p / sess %p"
1431 " for port %8phC, req_gen %d, sess_gen %d\n",
1432 sess->se_sess, sess, sess->port_name, max_gen,
1433 sess->generation);
1434 return;
1435 }
1436
2d70c103
NB		 1437 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1438
1439 sess->local = 1;
94cff6e1 1440 qlt_schedule_sess_for_deletion(sess);
7560151b 1441 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1442}
1443
1444static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1445{
1446 struct qla_hw_data *ha = tgt->ha;
1447 unsigned long flags;
1448 int res;
1449 /*
1450 * We need to protect against race, when tgt is freed before or
1451 * inside wake_up()
1452 */
726b8548 1453 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1454 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1455 "tgt %p, sess_count=%d\n",
1456 tgt, tgt->sess_count);
2d70c103 1457 res = (tgt->sess_count == 0);
726b8548 1458 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1459
1460 return res;
1461}
1462
1463/* Called by tcm_qla2xxx configfs code */
3c231bda 1464int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1465{
1466 struct scsi_qla_host *vha = tgt->vha;
1467 struct qla_hw_data *ha = tgt->ha;
1468 unsigned long flags;
1469
3c231bda
NB		 1470 mutex_lock(&qla_tgt_mutex);
1471 if (!vha->fc_vport) {
1472 struct Scsi_Host *sh = vha->host;
1473 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1474 bool npiv_vports;
1475
1476 spin_lock_irqsave(sh->host_lock, flags);
1477 npiv_vports = (fc_host->npiv_vports_inuse);
1478 spin_unlock_irqrestore(sh->host_lock, flags);
1479
1480 if (npiv_vports) {
1481 mutex_unlock(&qla_tgt_mutex);
3a33dc95
QT		 1482 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1483 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1484 return -EPERM;
1485 }
1486 }
2d70c103
NB		 1487 if (tgt->tgt_stop || tgt->tgt_stopped) {
1488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1489 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1490 mutex_unlock(&qla_tgt_mutex);
1491 return -EPERM;
2d70c103
NB		 1492 }
1493
3a33dc95 1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1495 vha->host_no, vha);
1496 /*
1497 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1498 * Lock is needed, because we still can get an incoming packet.
1499 */
0e8cd71c 1500 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1501 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1502 tgt->tgt_stop = 1;
c5701042 1503 qlt_clear_tgt_db(tgt);
7560151b 1504 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1505 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1506 mutex_unlock(&qla_tgt_mutex);
2d70c103 1507
2d70c103
NB		 1508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1509 "Waiting for sess works (tgt %p)", tgt);
1510 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1511 while (!list_empty(&tgt->sess_works_list)) {
1512 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1513 flush_scheduled_work();
1514 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1515 }
1516 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1517
1518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1519 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1520
b85e0957 1521 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1522
1523 /* Big hammer */
ead03855
QT		 1524 if (!ha->flags.host_shutting_down &&
1525 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1526 qlt_disable_vha(vha);
1527
1528 /* Wait for sessions to clear out (just in case) */
b85e0957 1529 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
3c231bda 1530 return 0;
2d70c103
NB		 1531}
1532EXPORT_SYMBOL(qlt_stop_phase1);
1533
1534/* Called by tcm_qla2xxx configfs code */
1535void qlt_stop_phase2(struct qla_tgt *tgt)
1536{
3a33dc95 1537 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1538
1539 if (tgt->tgt_stopped) {
0e8cd71c 1540 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1541 "Already in tgt->tgt_stopped state\n");
1542 dump_stack();
1543 return;
1544 }
3a33dc95
QT		 1545 if (!tgt->tgt_stop) {
1546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1547 "%s: phase1 stop is not completed\n", __func__);
1548 dump_stack();
1549 return;
1550 }
2d70c103 1551
0e8cd71c 1552 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1553 tgt->tgt_stop = 0;
1554 tgt->tgt_stopped = 1;
0e8cd71c 1555 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1556
3a33dc95 1557 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1558 tgt);
1559}
1560EXPORT_SYMBOL(qlt_stop_phase2);
1561
1562/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1563static void qlt_release(struct qla_tgt *tgt)
2d70c103 1564{
0e8cd71c 1565 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1566 void *node;
1567 u64 key = 0;
1568 u16 i;
1569 struct qla_qpair_hint *h;
bdbe24de 1570 struct qla_hw_data *ha = vha->hw;
2d70c103 1571
3a33dc95
QT		 1572 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1573 !tgt->tgt_stopped)
1574 qlt_stop_phase1(tgt);
1575
0e8cd71c 1576 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1577 qlt_stop_phase2(tgt);
1578
e326d22a
QT		 1579 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1580 unsigned long flags;
1581
1582 h = &tgt->qphints[i];
1583 if (h->qpair) {
1584 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1585 list_del(&h->hint_elem);
1586 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1587 h->qpair = NULL;
1588 }
1589 }
1590 kfree(tgt->qphints);
bdbe24de
QT		 1591 mutex_lock(&qla_tgt_mutex);
1592 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1593 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1594
1595 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1596 btree_remove64(&tgt->lun_qpair_map, key);
1597
1598 btree_destroy64(&tgt->lun_qpair_map);
1599
3be63b1e
SC		 1600 if (vha->vp_idx)
1601 if (ha->tgt.tgt_ops &&
1602 ha->tgt.tgt_ops->remove_target &&
1603 vha->vha_tgt.target_lport_ptr)
1604 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1605
0e8cd71c 1606 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1607
0e8cd71c 1608 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1609 "Release of tgt %p finished\n", tgt);
1610
1611 kfree(tgt);
1612}
1613
1614/* ha->hardware_lock supposed to be held on entry */
1615static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1616 const void *param, unsigned int param_size)
1617{
1618 struct qla_tgt_sess_work_param *prm;
1619 unsigned long flags;
1620
1621 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1622 if (!prm) {
1623 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1624 "qla_target(%d): Unable to create session "
1625 "work, command will be refused", 0);
1626 return -ENOMEM;
1627 }
1628
1629 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1630 "Scheduling work (type %d, prm %p)"
1631 " to find session for param %p (size %d, tgt %p)\n",
1632 type, prm, param, param_size, tgt);
1633
1634 prm->type = type;
1635 memcpy(&prm->tm_iocb, param, param_size);
1636
1637 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1638 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1639 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1640
1641 schedule_work(&tgt->sess_work);
1642
1643 return 0;
1644}
1645
1646/*
1647 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1648 */
82de802a 1649static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1650 struct imm_ntfy_from_isp *ntfy,
1651 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1652 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1653{
82de802a 1654 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1655 struct qla_hw_data *ha = vha->hw;
1656 request_t *pkt;
1657 struct nack_to_isp *nack;
1658
ec7193e2
QT		 1659 if (!ha->flags.fw_started)
1660 return;
1661
2d70c103
NB		 1662 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1663
82de802a 1664 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1665 if (!pkt) {
1666 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1667 "qla_target(%d): %s failed: unable to allocate "
1668 "request packet\n", vha->vp_idx, __func__);
1669 return;
1670 }
1671
0e8cd71c
SK		 1672 if (vha->vha_tgt.qla_tgt != NULL)
1673 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1674
1675 pkt->entry_type = NOTIFY_ACK_TYPE;
1676 pkt->entry_count = 1;
1677
1678 nack = (struct nack_to_isp *)pkt;
1679 nack->ox_id = ntfy->ox_id;
1680
726b8548 1681 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1682 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1683 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1684 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1685 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1686 }
1687 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1688 nack->u.isp24.status = ntfy->u.isp24.status;
1689 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1690 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1691 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1692 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1693 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1694 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1695 nack->u.isp24.srr_reject_code = srr_reject_code;
1696 nack->u.isp24.srr_reject_code_expl = srr_explan;
1697 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1698
1699 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1700 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1701 vha->vp_idx, nack->u.isp24.status);
1702
63163e06
HM		 1703 /* Memory Barrier */
1704 wmb();
82de802a 1705 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1706}
1707
1708/*
1709 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1710 */
82de802a 1711static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1712 struct abts_recv_from_24xx *abts, uint32_t status,
1713 bool ids_reversed)
1714{
82de802a 1715 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1716 struct qla_hw_data *ha = vha->hw;
1717 struct abts_resp_to_24xx *resp;
1718 uint32_t f_ctl;
1719 uint8_t *p;
1720
1721 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1722 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1723 ha, abts, status);
1724
82de802a
QT		 1725 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1726 NULL);
2d70c103
NB		 1727 if (!resp) {
1728 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1729 "qla_target(%d): %s failed: unable to allocate "
1730 "request packet", vha->vp_idx, __func__);
1731 return;
1732 }
1733
1734 resp->entry_type = ABTS_RESP_24XX;
1735 resp->entry_count = 1;
1736 resp->nport_handle = abts->nport_handle;
1737 resp->vp_index = vha->vp_idx;
1738 resp->sof_type = abts->sof_type;
1739 resp->exchange_address = abts->exchange_address;
1740 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1741 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1742 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1743 F_CTL_SEQ_INITIATIVE);
1744 p = (uint8_t *)&f_ctl;
1745 resp->fcp_hdr_le.f_ctl[0] = *p++;
1746 resp->fcp_hdr_le.f_ctl[1] = *p++;
1747 resp->fcp_hdr_le.f_ctl[2] = *p;
1748 if (ids_reversed) {
1749 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1750 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1751 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1752 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1753 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1754 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1755 } else {
1756 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1757 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1758 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1759 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1760 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1761 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1762 }
1763 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1764 if (status == FCP_TMF_CMPL) {
1765 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1766 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1767 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1768 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1769 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1770 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1771 } else {
1772 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1773 resp->payload.ba_rjt.reason_code =
1774 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1775 /* Other bytes are zero */
1776 }
1777
0e8cd71c 1778 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1779
63163e06
HM		 1780 /* Memory Barrier */
1781 wmb();
8abfa9e2
QT		 1782 if (qpair->reqq_start_iocbs)
1783 qpair->reqq_start_iocbs(qpair);
1784 else
1785 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1786}
1787
1788/*
1789 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1790 */
1791static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1792 struct abts_resp_from_24xx_fw *entry)
1793{
1794 struct ctio7_to_24xx *ctio;
1795
1796 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1797 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
2d70c103 1798
82de802a
QT		 1799 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1800 vha->hw->base_qpair, NULL);
2d70c103
NB		 1801 if (ctio == NULL) {
1802 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1803 "qla_target(%d): %s failed: unable to allocate "
1804 "request packet\n", vha->vp_idx, __func__);
1805 return;
1806 }
1807
1808 /*
1809 * We've got on entrance firmware's response on by us generated
1810 * ABTS response. So, in it ID fields are reversed.
1811 */
1812
1813 ctio->entry_type = CTIO_TYPE7;
1814 ctio->entry_count = 1;
1815 ctio->nport_handle = entry->nport_handle;
1816 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1817 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1818 ctio->vp_index = vha->vp_idx;
1819 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1820 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1821 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1822 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1823 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1824 CTIO7_FLAGS_TERMINATE);
33a5fcee 1825 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1826
63163e06
HM		 1827 /* Memory Barrier */
1828 wmb();
2d70c103
NB		 1829 qla2x00_start_iocbs(vha, vha->req);
1830
82de802a
QT		 1831 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1832 (struct abts_recv_from_24xx *)entry,
2d70c103
NB		 1833 FCP_TMF_CMPL, true);
1834}
1835
8b2f5ff3
SN		 1836static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1837{
1838 struct qla_tgt_sess_op *op;
1839 struct qla_tgt_cmd *cmd;
8b631d87 1840 unsigned long flags;
8b2f5ff3 1841
8b631d87 1842 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1843 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1844 if (tag == op->atio.u.isp24.exchange_addr) {
1845 op->aborted = true;
8b631d87 1846 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1847 return 1;
1848 }
1849 }
1850
41dc529a
QT		 1851 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1852 if (tag == op->atio.u.isp24.exchange_addr) {
1853 op->aborted = true;
8b631d87 1854 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1855 return 1;
1856 }
1857 }
1858
8b2f5ff3
SN		 1859 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1860 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1861 cmd->aborted = 1;
8b631d87 1862 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1863 return 1;
1864 }
1865 }
8b631d87 1866 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1867
8b2f5ff3
SN		 1868 return 0;
1869}
1870
1871/* drop cmds for the given lun
1872 * XXX only looks for cmds on the port through which lun reset was recieved
1873 * XXX does not go through the list of other port (which may have cmds
1874 * for the same lun)
1875 */
1876static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1877 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1878{
1879 struct qla_tgt_sess_op *op;
1880 struct qla_tgt_cmd *cmd;
1881 uint32_t key;
8b631d87 1882 unsigned long flags;
8b2f5ff3
SN		 1883
1884 key = sid_to_key(s_id);
8b631d87 1885 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1886 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1887 uint32_t op_key;
f775bd14 1888 u64 op_lun;
8b2f5ff3
SN		 1889
1890 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1891 op_lun = scsilun_to_int(
1892 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1893 if (op_key == key && op_lun == lun)
1894 op->aborted = true;
1895 }
41dc529a
QT		 1896
1897 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1898 uint32_t op_key;
1899 u64 op_lun;
1900
1901 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1902 op_lun = scsilun_to_int(
1903 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1904 if (op_key == key && op_lun == lun)
1905 op->aborted = true;
1906 }
1907
8b2f5ff3
SN		 1908 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1909 uint32_t cmd_key;
f775bd14 1910 u64 cmd_lun;
8b2f5ff3
SN		 1911
1912 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1913 cmd_lun = scsilun_to_int(
1914 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1915 if (cmd_key == key && cmd_lun == lun)
193b50b9 1916 cmd->aborted = 1;
8b2f5ff3 1917 }
8b631d87 1918 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1919}
1920
2d70c103
NB		 1921/* ha->hardware_lock supposed to be held on entry */
1922static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1923 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1924{
1925 struct qla_hw_data *ha = vha->hw;
1926 struct qla_tgt_mgmt_cmd *mcmd;
1927 int rc;
06e97b48 1928
eb5ae233
NB		 1929 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1930 /* send TASK_ABORT response immediately */
48ea2ced 1931 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
eb5ae233 1932 return 0;
8b2f5ff3 1933 }
2d70c103
NB		 1934
1935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1936 "qla_target(%d): task abort (tag=%d)\n",
1937 vha->vp_idx, abts->exchange_addr_to_abort);
1938
1939 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1940 if (mcmd == NULL) {
1941 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1942 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1943 vha->vp_idx, __func__);
1944 return -ENOMEM;
1945 }
1946 memset(mcmd, 0, sizeof(*mcmd));
1947
1948 mcmd->sess = sess;
1949 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 1950 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 1951 mcmd->tmr_func = QLA_TGT_ABTS;
82de802a 1952 mcmd->qpair = ha->base_qpair;
72fcd4eb 1953 mcmd->vha = vha;
2d70c103 1954
eb5ae233
NB		 1955 /*
1956 * LUN is looked up by target-core internally based on the passed
1957 * abts->exchange_addr_to_abort tag.
1958 */
1959 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
2d70c103
NB		 1960 abts->exchange_addr_to_abort);
1961 if (rc != 0) {
1962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1963 "qla_target(%d): tgt_ops->handle_tmr()"
1964 " failed: %d", vha->vp_idx, rc);
1965 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1966 return -EFAULT;
1967 }
1968
1969 return 0;
1970}
1971
1972/*
1973 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1974 */
1975static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1976 struct abts_recv_from_24xx *abts)
1977{
1978 struct qla_hw_data *ha = vha->hw;
5d964837 1979 struct fc_port *sess;
2d70c103
NB		 1980 uint32_t tag = abts->exchange_addr_to_abort;
1981 uint8_t s_id[3];
1982 int rc;
7560151b 1983 unsigned long flags;
2d70c103
NB		 1984
1985 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1987 "qla_target(%d): ABTS: Abort Sequence not "
1988 "supported\n", vha->vp_idx);
82de802a
QT		 1989 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1990 false);
2d70c103
NB		 1991 return;
1992 }
1993
1994 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1996 "qla_target(%d): ABTS: Unknown Exchange "
1997 "Address received\n", vha->vp_idx);
82de802a
QT		 1998 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1999 false);
2d70c103
NB		 2000 return;
2001 }
2002
2003 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2004 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2005 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2006 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2007 le32_to_cpu(abts->fcp_hdr_le.parameter));
2008
2009 s_id[0] = abts->fcp_hdr_le.s_id[2];
2010 s_id[1] = abts->fcp_hdr_le.s_id[1];
2011 s_id[2] = abts->fcp_hdr_le.s_id[0];
2012
7560151b 2013 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 2014 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2015 if (!sess) {
2016 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2017 "qla_target(%d): task abort for non-existant session\n",
2018 vha->vp_idx);
7560151b
QT		 2019 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2020
fb35265b
QT		 2021 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2022 false);
2d70c103
NB		 2023 return;
2024 }
7560151b
QT		 2025 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2026
2d70c103 2027
726b8548 2028 if (sess->deleted) {
82de802a
QT		 2029 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2030 false);
e52a8b45
AP		 2031 return;
2032 }
2033
2d70c103
NB		 2034 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2035 if (rc != 0) {
2036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2037 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2038 vha->vp_idx, rc);
82de802a
QT		 2039 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2040 false);
2d70c103
NB		 2041 return;
2042 }
2043}
2044
2045/*
2046 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2047 */
82de802a 2048static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2049 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2050{
72fcd4eb 2051 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2052 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2053 struct ctio7_to_24xx *ctio;
33a5fcee 2054 uint16_t temp;
2d70c103
NB		 2055
2056 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2057 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2058 ha, atio, resp_code);
2059
2d70c103 2060
82de802a 2061 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2062 if (ctio == NULL) {
2063 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2064 "qla_target(%d): %s failed: unable to allocate "
2065 "request packet\n", ha->vp_idx, __func__);
2066 return;
2067 }
2068
2069 ctio->entry_type = CTIO_TYPE7;
2070 ctio->entry_count = 1;
2071 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2072 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2073 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2074 ctio->vp_index = ha->vp_idx;
2075 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2076 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2077 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2078 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2079 temp = (atio->u.isp24.attr << 9)|
2080 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2081 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2082 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2083 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2084 ctio->u.status1.scsi_status =
ad950360
BVA		 2085 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2086 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2087 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2088
63163e06
HM		 2089 /* Memory Barrier */
2090 wmb();
8abfa9e2
QT		 2091 if (qpair->reqq_start_iocbs)
2092 qpair->reqq_start_iocbs(qpair);
2093 else
2094 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2095}
2096
2097void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2098{
2099 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2100}
2101EXPORT_SYMBOL(qlt_free_mcmd);
2102
be25152c
QT		 2103/*
2104 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2105 * reacquire
2106 */
8abfa9e2 2107void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2108 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2109{
2110 struct atio_from_isp *atio = &cmd->atio;
2111 struct ctio7_to_24xx *ctio;
2112 uint16_t temp;
8abfa9e2 2113 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2114
2115 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2116 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2117 "sense_key=%02x, asc=%02x, ascq=%02x",
2118 vha, atio, scsi_status, sense_key, asc, ascq);
2119
2120 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2121 if (!ctio) {
2122 ql_dbg(ql_dbg_async, vha, 0x3067,
2123 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2124 vha->host_no, __func__);
2125 goto out;
2126 }
2127
2128 ctio->entry_type = CTIO_TYPE7;
2129 ctio->entry_count = 1;
2130 ctio->handle = QLA_TGT_SKIP_HANDLE;
2131 ctio->nport_handle = cmd->sess->loop_id;
2132 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2133 ctio->vp_index = vha->vp_idx;
2134 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2135 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2136 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2137 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2138 temp = (atio->u.isp24.attr << 9) |
2139 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2140 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2141 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2142 ctio->u.status1.ox_id = cpu_to_le16(temp);
2143 ctio->u.status1.scsi_status =
2144 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2145 ctio->u.status1.response_len = cpu_to_le16(18);
2146 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2147
2148 if (ctio->u.status1.residual != 0)
2149 ctio->u.status1.scsi_status |=
2150 cpu_to_le16(SS_RESIDUAL_UNDER);
2151
2152 /* Response code and sense key */
2153 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2154 (&ctio->u.status1.sense_data)[0]);
2155 /* Additional sense length */
2156 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2157 /* ASC and ASCQ */
2158 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2159 (&ctio->u.status1.sense_data)[3]);
2160
2161 /* Memory Barrier */
2162 wmb();
2163
8abfa9e2
QT		 2164 if (qpair->reqq_start_iocbs)
2165 qpair->reqq_start_iocbs(qpair);
2166 else
2167 qla2x00_start_iocbs(vha, qpair->req);
2168
be25152c
QT		 2169out:
2170 return;
2171}
2172
2d70c103
NB		 2173/* callback from target fabric module code */
2174void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2175{
2176 struct scsi_qla_host *vha = mcmd->sess->vha;
2177 struct qla_hw_data *ha = vha->hw;
2178 unsigned long flags;
82de802a 2179 struct qla_qpair *qpair = mcmd->qpair;
2d70c103
NB		 2180
2181 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2182 "TM response mcmd (%p) status %#x state %#x",
2183 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2184
82de802a 2185 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2186
7c3f8fd1 2187 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2188 /*
3bb67df5 2189 * Either the port is not online or this request was from
b6a029e1
AE		 2190 * previous life, just abort the processing.
2191 */
2192 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2193 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2194 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2195 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2196 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2197 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2198 return;
2199 }
2200
726b8548
QT		 2201 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2202 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2203 ELS_LOGO ||
2204 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2205 ELS_PRLO ||
2206 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2207 ELS_TPRLO) {
83548fe2 2208 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2209 "TM response logo %phC status %#x state %#x",
2210 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2211 mcmd->flags);
d8630bb9 2212 qlt_schedule_sess_for_deletion(mcmd->sess);
726b8548 2213 } else {
82de802a
QT		 2214 qlt_send_notify_ack(vha->hw->base_qpair,
2215 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
726b8548
QT		 2216 }
2217 } else {
d7236ac3 2218 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
82de802a 2219 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2d70c103
NB		 2220 mcmd->fc_tm_rsp, false);
2221 else
82de802a 2222 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2223 mcmd->fc_tm_rsp);
2224 }
2225 /*
2226 * Make the callback for ->free_mcmd() to queue_work() and invoke
2227 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2228 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2229 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2230 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2231 * qlt_xmit_tm_rsp() returns here..
2232 */
2233 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2234 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2235}
2236EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2237
2238/* No locks */
2239static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2240{
2241 struct qla_tgt_cmd *cmd = prm->cmd;
2242
2243 BUG_ON(cmd->sg_cnt == 0);
2244
2245 prm->sg = (struct scatterlist *)cmd->sg;
8abfa9e2 2246 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2d70c103
NB		 2247 cmd->sg_cnt, cmd->dma_data_direction);
2248 if (unlikely(prm->seg_cnt == 0))
2249 goto out_err;
2250
2251 prm->cmd->sg_mapped = 1;
2252
f83adb61
QT		 2253 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2254 /*
2255 * If greater than four sg entries then we need to allocate
2256 * the continuation entries
2257 */
b5399f7d 2258 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2259 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2260 QLA_TGT_DATASEGS_PER_CMD_24XX,
2261 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2262 } else {
2263 /* DIF */
2264 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2265 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2266 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2267 prm->tot_dsds = prm->seg_cnt;
2268 } else
2269 prm->tot_dsds = prm->seg_cnt;
2270
2271 if (cmd->prot_sg_cnt) {
2272 prm->prot_sg = cmd->prot_sg;
8abfa9e2 2273 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
f83adb61
QT		 2274 cmd->prot_sg, cmd->prot_sg_cnt,
2275 cmd->dma_data_direction);
2276 if (unlikely(prm->prot_seg_cnt == 0))
2277 goto out_err;
2278
2279 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2280 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2281 /* Dif Bundling not support here */
2282 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2283 cmd->blk_sz);
2284 prm->tot_dsds += prm->prot_seg_cnt;
2285 } else
2286 prm->tot_dsds += prm->prot_seg_cnt;
2287 }
2288 }
2d70c103 2289
2d70c103
NB		 2290 return 0;
2291
2292out_err:
22d84726 2293 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2294 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2295 0, prm->cmd->sg_cnt);
2296 return -1;
2297}
2298
f9b6721a 2299static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2300{
8abfa9e2
QT		 2301 struct qla_hw_data *ha;
2302 struct qla_qpair *qpair;
f9b6721a
JE		 2303 if (!cmd->sg_mapped)
2304 return;
2305
8abfa9e2
QT		 2306 qpair = cmd->qpair;
2307
2308 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2309 cmd->dma_data_direction);
2d70c103 2310 cmd->sg_mapped = 0;
f83adb61
QT		 2311
2312 if (cmd->prot_sg_cnt)
8abfa9e2 2313 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2314 cmd->dma_data_direction);
2315
d5ff0eed
JC		 2316 if (!cmd->ctx)
2317 return;
8abfa9e2 2318 ha = vha->hw;
f83adb61 2319 if (cmd->ctx_dsd_alloced)
d5ff0eed 2320 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2321
d5ff0eed 2322 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2323}
2324
82de802a 2325static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2326 uint32_t req_cnt)
2327{
d63b328f 2328 uint32_t cnt;
82de802a 2329 struct req_que *req = qpair->req;
2d70c103 2330
82de802a 2331 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2332 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2333 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2334
82de802a
QT		 2335 if (req->ring_index < cnt)
2336 req->cnt = cnt - req->ring_index;
2d70c103 2337 else
82de802a 2338 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2339
82de802a 2340 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2341 return -EAGAIN;
2d70c103 2342 }
bc7095a9 2343
82de802a 2344 req->cnt -= req_cnt;
2d70c103
NB		 2345
2346 return 0;
2347}
2348
2349/*
2350 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2351 */
82de802a 2352static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2353{
2354 /* Adjust ring index. */
82de802a
QT		 2355 req->ring_index++;
2356 if (req->ring_index == req->length) {
2357 req->ring_index = 0;
2358 req->ring_ptr = req->ring;
2d70c103 2359 } else {
82de802a 2360 req->ring_ptr++;
2d70c103 2361 }
82de802a 2362 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2363}
2364
2365/* ha->hardware_lock supposed to be held on entry */
82de802a 2366static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2367{
2d70c103 2368 uint32_t h;
c5419e26
QT		 2369 int index;
2370 uint8_t found = 0;
82de802a 2371 struct req_que *req = qpair->req;
c5419e26
QT		 2372
2373 h = req->current_outstanding_cmd;
2d70c103 2374
c5419e26
QT		 2375 for (index = 1; index < req->num_outstanding_cmds; index++) {
2376 h++;
2377 if (h == req->num_outstanding_cmds)
2378 h = 1;
2379
2380 if (h == QLA_TGT_SKIP_HANDLE)
2381 continue;
2382
2383 if (!req->outstanding_cmds[h]) {
2384 found = 1;
2d70c103
NB		 2385 break;
2386 }
c5419e26 2387 }
2d70c103 2388
c5419e26
QT		 2389 if (found) {
2390 req->current_outstanding_cmd = h;
2391 } else {
8abfa9e2
QT		 2392 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2393 "qla_target(%d): Ran out of empty cmd slots\n",
2394 qpair->vha->vp_idx);
c5419e26
QT		 2395 h = QLA_TGT_NULL_HANDLE;
2396 }
2d70c103
NB		 2397
2398 return h;
2399}
2400
2401/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2402static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2403 struct qla_tgt_prm *prm)
2d70c103
NB		 2404{
2405 uint32_t h;
2406 struct ctio7_to_24xx *pkt;
2d70c103 2407 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2408 uint16_t temp;
2d70c103 2409
82de802a 2410 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2411 prm->pkt = pkt;
2412 memset(pkt, 0, sizeof(*pkt));
2413
2414 pkt->entry_type = CTIO_TYPE7;
2415 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2416 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2417
82de802a 2418 h = qlt_make_handle(qpair);
2d70c103
NB		 2419 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2420 /*
2421 * CTIO type 7 from the firmware doesn't provide a way to
2422 * know the initiator's LOOP ID, hence we can't find
2423 * the session and, so, the command.
2424 */
2425 return -EAGAIN;
e326d22a
QT		 2426 } else
2427 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2428
82de802a
QT		 2429 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2430 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2431 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2432 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2433 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2434 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2435 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2436 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2437 temp = atio->u.isp24.attr << 9;
2438 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2439 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2440 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2441 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2442
2d70c103
NB		 2443 return 0;
2444}
2445
2446/*
2447 * ha->hardware_lock supposed to be held on entry. We have already made sure
2448 * that there is sufficient amount of request entries to not drop it.
2449 */
32d29b4c 2450static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2451{
2452 int cnt;
2453 uint32_t *dword_ptr;
2d70c103
NB		 2454
2455 /* Build continuation packets */
2456 while (prm->seg_cnt > 0) {
2457 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2458 (cont_a64_entry_t *)qlt_get_req_pkt(
2459 prm->cmd->qpair->req);
2d70c103
NB		 2460
2461 /*
2462 * Make sure that from cont_pkt64 none of
2463 * 64-bit specific fields used for 32-bit
2464 * addressing. Cast to (cont_entry_t *) for
2465 * that.
2466 */
2467
2468 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2469
2470 cont_pkt64->entry_count = 1;
2471 cont_pkt64->sys_define = 0;
2472
32d29b4c
QT		 2473 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2474 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2d70c103
NB		 2475
2476 /* Load continuation entry data segments */
2477 for (cnt = 0;
b5399f7d 2478 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103
NB		 2479 cnt++, prm->seg_cnt--) {
2480 *dword_ptr++ =
2481 cpu_to_le32(pci_dma_lo32
2482 (sg_dma_address(prm->sg)));
32d29b4c
QT		 2483 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2484 (sg_dma_address(prm->sg)));
2d70c103
NB		 2485 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2486
2d70c103
NB		 2487 prm->sg = sg_next(prm->sg);
2488 }
2489 }
2490}
2491
2492/*
2493 * ha->hardware_lock supposed to be held on entry. We have already made sure
2494 * that there is sufficient amount of request entries to not drop it.
2495 */
32d29b4c 2496static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2497{
2498 int cnt;
2499 uint32_t *dword_ptr;
2d70c103
NB		 2500 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2501
2d70c103
NB		 2502 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2503
2504 /* Setup packet address segment pointer */
2505 dword_ptr = pkt24->u.status0.dseg_0_address;
2506
2507 /* Set total data segment count */
2508 if (prm->seg_cnt)
2509 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2510
2511 if (prm->seg_cnt == 0) {
2512 /* No data transfer */
2513 *dword_ptr++ = 0;
2514 *dword_ptr = 0;
2515 return;
2516 }
2517
2518 /* If scatter gather */
2d70c103
NB		 2519
2520 /* Load command entry data segments */
2521 for (cnt = 0;
b5399f7d 2522 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103
NB		 2523 cnt++, prm->seg_cnt--) {
2524 *dword_ptr++ =
2525 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
32d29b4c
QT		 2526
2527 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2528 sg_dma_address(prm->sg)));
2529
2d70c103
NB		 2530 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2531
2d70c103
NB		 2532 prm->sg = sg_next(prm->sg);
2533 }
2534
32d29b4c 2535 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2536}
2537
2538static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2539{
2540 return cmd->bufflen > 0;
2541}
2542
be25152c
QT		 2543static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2544{
2545 struct qla_tgt_cmd *cmd;
2546 struct scsi_qla_host *vha;
2547
2548 /* asc 0x10=dif error */
2549 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2550 cmd = prm->cmd;
2551 vha = cmd->vha;
2552 /* ASCQ */
2553 switch (prm->sense_buffer[13]) {
2554 case 1:
83548fe2 2555 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2556 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2557 "se_cmd=%p tag[%x]",
2558 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2559 cmd->atio.u.isp24.exchange_addr);
2560 break;
2561 case 2:
83548fe2 2562 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2563 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2564 "se_cmd=%p tag[%x]",
2565 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2566 cmd->atio.u.isp24.exchange_addr);
2567 break;
2568 case 3:
83548fe2 2569 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2570 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2571 "se_cmd=%p tag[%x]",
2572 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2573 cmd->atio.u.isp24.exchange_addr);
2574 break;
2575 default:
83548fe2 2576 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2577 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2578 "se_cmd=%p tag[%x]",
2579 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2580 cmd->atio.u.isp24.exchange_addr);
2581 break;
2582 }
83548fe2 2583 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2584 }
2585}
2586
2d70c103
NB		 2587/*
2588 * Called without ha->hardware_lock held
2589 */
2590static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2591 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2592 uint32_t *full_req_cnt)
2593{
2d70c103 2594 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2595 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2596
2d70c103 2597 prm->cmd = cmd;
7c3f8fd1
QT		 2598 prm->tgt = cmd->tgt;
2599 prm->pkt = NULL;
2d70c103
NB		 2600 prm->rq_result = scsi_status;
2601 prm->sense_buffer = &cmd->sense_buffer[0];
2602 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2603 prm->sg = NULL;
2604 prm->seg_cnt = -1;
2605 prm->req_cnt = 1;
7c3f8fd1 2606 prm->residual = 0;
2d70c103 2607 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2608 prm->prot_sg = NULL;
2609 prm->prot_seg_cnt = 0;
2610 prm->tot_dsds = 0;
2d70c103 2611
2d70c103
NB		 2612 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2613 if (qlt_pci_map_calc_cnt(prm) != 0)
2614 return -EAGAIN;
2615 }
2616
2617 *full_req_cnt = prm->req_cnt;
2618
2619 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2620 prm->residual = se_cmd->residual_count;
22d84726 2621 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2622 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2623 prm->residual, se_cmd->tag,
2624 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2625 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2626 prm->rq_result |= SS_RESIDUAL_UNDER;
2627 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2628 prm->residual = se_cmd->residual_count;
22d84726 2629 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2630 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2631 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2632 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2633 prm->rq_result |= SS_RESIDUAL_OVER;
2634 }
2635
2636 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2637 /*
2638 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2639 * ignored in *xmit_response() below
2640 */
2641 if (qlt_has_data(cmd)) {
2642 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2643 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2644 (prm->rq_result != 0))) {
2645 prm->add_status_pkt = 1;
2646 (*full_req_cnt)++;
2647 }
2648 }
2649 }
2650
2d70c103
NB		 2651 return 0;
2652}
2653
7c3f8fd1
QT		 2654static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2655 int sending_sense)
2d70c103 2656{
7c3f8fd1 2657 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2658 return 0;
2659
2660 if (sending_sense)
2661 return cmd->conf_compl_supported;
2662 else
7c3f8fd1
QT		 2663 return cmd->qpair->enable_explicit_conf &&
2664 cmd->conf_compl_supported;
2d70c103
NB		 2665}
2666
2d70c103
NB		 2667static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2668 struct qla_tgt_prm *prm)
2669{
2670 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2671 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2672 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2673 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2674 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2675 CTIO7_FLAGS_EXPLICIT_CONFORM |
2676 CTIO7_FLAGS_CONFORM_REQ);
2677 }
2678 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2679 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2680 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2681 int i;
2682
7c3f8fd1 2683 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2684 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2685 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2686 "Skipping EXPLICIT_CONFORM and "
2687 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2688 "non GOOD status\n");
2689 goto skip_explict_conf;
2690 }
ad950360 2691 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2692 CTIO7_FLAGS_EXPLICIT_CONFORM |
2693 CTIO7_FLAGS_CONFORM_REQ);
2694 }
2695skip_explict_conf:
2696 ctio->u.status1.flags &=
ad950360 2697 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2698 ctio->u.status1.flags |=
ad950360 2699 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2700 ctio->u.status1.scsi_status |=
ad950360 2701 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2702 ctio->u.status1.sense_length =
2703 cpu_to_le16(prm->sense_buffer_len);
2704 for (i = 0; i < prm->sense_buffer_len/4; i++)
2705 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2706 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2707
2708 qlt_print_dif_err(prm);
2709
2d70c103
NB		 2710 } else {
2711 ctio->u.status1.flags &=
ad950360 2712 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2713 ctio->u.status1.flags |=
ad950360 2714 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2715 ctio->u.status1.sense_length = 0;
2716 memset(ctio->u.status1.sense_data, 0,
2717 sizeof(ctio->u.status1.sense_data));
2718 }
2719
2720 /* Sense with len > 24, is it possible ??? */
2721}
2722
f83adb61
QT		 2723static inline int
2724qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2725{
f83adb61
QT		 2726 switch (se_cmd->prot_op) {
2727 case TARGET_PROT_DOUT_INSERT:
2728 case TARGET_PROT_DIN_STRIP:
2729 if (ql2xenablehba_err_chk >= 1)
2730 return 1;
2731 break;
2732 case TARGET_PROT_DOUT_PASS:
2733 case TARGET_PROT_DIN_PASS:
2734 if (ql2xenablehba_err_chk >= 2)
2735 return 1;
2736 break;
2737 case TARGET_PROT_DIN_INSERT:
2738 case TARGET_PROT_DOUT_STRIP:
2739 return 1;
2740 default:
2741 break;
2742 }
2743 return 0;
2744}
2745
be25152c
QT		 2746static inline int
2747qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2748{
2749 switch (se_cmd->prot_op) {
2750 case TARGET_PROT_DIN_INSERT:
2751 case TARGET_PROT_DOUT_INSERT:
2752 case TARGET_PROT_DIN_STRIP:
2753 case TARGET_PROT_DOUT_STRIP:
2754 case TARGET_PROT_DIN_PASS:
2755 case TARGET_PROT_DOUT_PASS:
2756 return 1;
2757 default:
2758 return 0;
2759 }
2760 return 0;
2761}
2762
f83adb61 2763/*
be25152c 2764 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2765 */
be25152c
QT		 2766static void
2767qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2768 uint16_t *pfw_prot_opts)
f83adb61 2769{
be25152c 2770 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2771 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2772 scsi_qla_host_t *vha = cmd->tgt->vha;
2773 struct qla_hw_data *ha = vha->hw;
2774 uint32_t t32 = 0;
f83adb61 2775
be25152c
QT		 2776 /*
2777 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2778 * have been immplemented by TCM, before AppTag is avail.
2779 * Look for modesense_handlers[]
2780 */
c7ee3bd4 2781 ctx->app_tag = 0;
f83adb61
QT		 2782 ctx->app_tag_mask[0] = 0x0;
2783 ctx->app_tag_mask[1] = 0x0;
2784
be25152c
QT		 2785 if (IS_PI_UNINIT_CAPABLE(ha)) {
2786 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2787 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2788 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2789 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2790 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2791 }
2792
2793 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2794
f83adb61
QT		 2795 switch (se_cmd->prot_type) {
2796 case TARGET_DIF_TYPE0_PROT:
2797 /*
be25152c
QT		 2798 * No check for ql2xenablehba_err_chk, as it
2799 * would be an I/O error if hba tag generation
2800 * is not done.
f83adb61
QT		 2801 */
2802 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2803 /* enable ALL bytes of the ref tag */
2804 ctx->ref_tag_mask[0] = 0xff;
2805 ctx->ref_tag_mask[1] = 0xff;
2806 ctx->ref_tag_mask[2] = 0xff;
2807 ctx->ref_tag_mask[3] = 0xff;
2808 break;
f83adb61 2809 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2810 /*
2811 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2812 * REF tag, and 16 bit app tag.
2813 */
2814 ctx->ref_tag = cpu_to_le32(lba);
2815 if (!qla_tgt_ref_mask_check(se_cmd) ||
2816 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2817 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2818 break;
2819 }
2820 /* enable ALL bytes of the ref tag */
2821 ctx->ref_tag_mask[0] = 0xff;
2822 ctx->ref_tag_mask[1] = 0xff;
2823 ctx->ref_tag_mask[2] = 0xff;
2824 ctx->ref_tag_mask[3] = 0xff;
2825 break;
f83adb61 2826 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2827 /*
2828 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2829 * tag has to match LBA in CDB + N
2830 */
2831 ctx->ref_tag = cpu_to_le32(lba);
2832 if (!qla_tgt_ref_mask_check(se_cmd) ||
2833 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2834 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2835 break;
2836 }
2837 /* enable ALL bytes of the ref tag */
2838 ctx->ref_tag_mask[0] = 0xff;
2839 ctx->ref_tag_mask[1] = 0xff;
2840 ctx->ref_tag_mask[2] = 0xff;
2841 ctx->ref_tag_mask[3] = 0xff;
2842 break;
f83adb61 2843 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2844 /* For TYPE 3 protection: 16 bit GUARD only */
2845 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2846 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2847 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2848 break;
f83adb61
QT		 2849 }
2850}
2851
f83adb61 2852static inline int
82de802a 2853qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61
QT		 2854{
2855 uint32_t *cur_dsd;
f83adb61
QT		 2856 uint32_t transfer_length = 0;
2857 uint32_t data_bytes;
2858 uint32_t dif_bytes;
2859 uint8_t bundling = 1;
2860 uint8_t *clr_ptr;
2861 struct crc_context *crc_ctx_pkt = NULL;
2862 struct qla_hw_data *ha;
2863 struct ctio_crc2_to_fw *pkt;
2864 dma_addr_t crc_ctx_dma;
2865 uint16_t fw_prot_opts = 0;
2866 struct qla_tgt_cmd *cmd = prm->cmd;
2867 struct se_cmd *se_cmd = &cmd->se_cmd;
2868 uint32_t h;
2869 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2870 struct qla_tc_param tc;
c7ee3bd4 2871 uint16_t t16;
82de802a 2872 scsi_qla_host_t *vha = cmd->vha;
f83adb61 2873
f83adb61
QT		 2874 ha = vha->hw;
2875
82de802a 2876 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 2877 prm->pkt = pkt;
2878 memset(pkt, 0, sizeof(*pkt));
2879
22d84726 2880 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 2881 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 2882 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 2883 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2884
2885 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2886 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2887 bundling = 0;
2888
2889 /* Compute dif len and adjust data len to incude protection */
2890 data_bytes = cmd->bufflen;
2891 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2892
2893 switch (se_cmd->prot_op) {
2894 case TARGET_PROT_DIN_INSERT:
2895 case TARGET_PROT_DOUT_STRIP:
2896 transfer_length = data_bytes;
be25152c
QT		 2897 if (cmd->prot_sg_cnt)
2898 data_bytes += dif_bytes;
f83adb61 2899 break;
f83adb61
QT		 2900 case TARGET_PROT_DIN_STRIP:
2901 case TARGET_PROT_DOUT_INSERT:
2902 case TARGET_PROT_DIN_PASS:
2903 case TARGET_PROT_DOUT_PASS:
2904 transfer_length = data_bytes + dif_bytes;
2905 break;
f83adb61
QT		 2906 default:
2907 BUG();
2908 break;
2909 }
2910
2911 if (!qlt_hba_err_chk_enabled(se_cmd))
2912 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2913 /* HBA error checking enabled */
2914 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2915 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2916 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2917 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2918 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2919 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2920 }
2921
2922 switch (se_cmd->prot_op) {
2923 case TARGET_PROT_DIN_INSERT:
2924 case TARGET_PROT_DOUT_INSERT:
2925 fw_prot_opts |= PO_MODE_DIF_INSERT;
2926 break;
2927 case TARGET_PROT_DIN_STRIP:
2928 case TARGET_PROT_DOUT_STRIP:
2929 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2930 break;
2931 case TARGET_PROT_DIN_PASS:
2932 case TARGET_PROT_DOUT_PASS:
2933 fw_prot_opts |= PO_MODE_DIF_PASS;
2934 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2935 break;
2936 default:/* Normal Request */
2937 fw_prot_opts |= PO_MODE_DIF_PASS;
2938 break;
2939 }
2940
f83adb61
QT		 2941 /* ---- PKT ---- */
2942 /* Update entry type to indicate Command Type CRC_2 IOCB */
2943 pkt->entry_type = CTIO_CRC2;
2944 pkt->entry_count = 1;
22d84726 2945 pkt->vp_index = cmd->vp_idx;
f83adb61 2946
82de802a 2947 h = qlt_make_handle(qpair);
f83adb61
QT		 2948 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2949 /*
2950 * CTIO type 7 from the firmware doesn't provide a way to
2951 * know the initiator's LOOP ID, hence we can't find
2952 * the session and, so, the command.
2953 */
2954 return -EAGAIN;
2955 } else
82de802a 2956 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 2957
82de802a
QT		 2958 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2959 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 2960 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2961 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2962 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2963 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2964 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2965 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2966
2967 /* silence compile warning */
2968 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2969 pkt->ox_id = cpu_to_le16(t16);
2970
2971 t16 = (atio->u.isp24.attr << 9);
2972 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2973 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2974
2975 /* Set transfer direction */
2976 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2977 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2978 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2979 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2980
f83adb61
QT		 2981 pkt->dseg_count = prm->tot_dsds;
2982 /* Fibre channel byte count */
2983 pkt->transfer_length = cpu_to_le32(transfer_length);
2984
f83adb61
QT		 2985 /* ----- CRC context -------- */
2986
2987 /* Allocate CRC context from global pool */
2988 crc_ctx_pkt = cmd->ctx =
2989 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2990
2991 if (!crc_ctx_pkt)
2992 goto crc_queuing_error;
2993
2994 /* Zero out CTX area. */
2995 clr_ptr = (uint8_t *)crc_ctx_pkt;
2996 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
2997
2998 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
2999 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3000
3001 /* Set handle */
3002 crc_ctx_pkt->handle = pkt->handle;
3003
be25152c 3004 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 3005
3006 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3007 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3008 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3009
f83adb61
QT		 3010 if (!bundling) {
3011 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3012 } else {
3013 /*
3014 * Configure Bundling if we need to fetch interlaving
3015 * protection PCI accesses
3016 */
3017 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3018 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3019 crc_ctx_pkt->u.bundling.dseg_count =
3020 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3021 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3022 }
3023
3024 /* Finish the common fields of CRC pkt */
3025 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3026 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3027 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3028 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3029
be25152c
QT		 3030 memset((uint8_t *)&tc, 0 , sizeof(tc));
3031 tc.vha = vha;
3032 tc.blk_sz = cmd->blk_sz;
3033 tc.bufflen = cmd->bufflen;
3034 tc.sg = cmd->sg;
3035 tc.prot_sg = cmd->prot_sg;
3036 tc.ctx = crc_ctx_pkt;
3037 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3038
3039 /* Walks data segments */
ad950360 3040 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3041
3042 if (!bundling && prm->prot_seg_cnt) {
3043 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3044 prm->tot_dsds, &tc))
f83adb61
QT		 3045 goto crc_queuing_error;
3046 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3047 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3048 goto crc_queuing_error;
3049
3050 if (bundling && prm->prot_seg_cnt) {
3051 /* Walks dif segments */
c7ee3bd4 3052 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 3053
3054 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3055 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 3056 prm->prot_seg_cnt, &tc))
f83adb61
QT		 3057 goto crc_queuing_error;
3058 }
3059 return QLA_SUCCESS;
3060
3061crc_queuing_error:
3062 /* Cleanup will be performed by the caller */
82de802a 3063 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3064
3065 return QLA_FUNCTION_FAILED;
3066}
3067
2d70c103
NB		 3068/*
3069 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3070 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3071 */
3072int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3073 uint8_t scsi_status)
3074{
3075 struct scsi_qla_host *vha = cmd->vha;
82de802a 3076 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3077 struct ctio7_to_24xx *pkt;
3078 struct qla_tgt_prm prm;
3079 uint32_t full_req_cnt = 0;
3080 unsigned long flags = 0;
3081 int res;
3082
726b8548 3083 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3084 cmd->state = QLA_TGT_STATE_PROCESSED;
3085 if (cmd->sess->logout_completed)
3086 /* no need to terminate. FW already freed exchange. */
3087 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3088 else
82de802a 3089 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
a6ca8878
AP		 3090 return 0;
3091 }
a6ca8878 3092
22d84726 3093 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3094 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3095 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3096 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3097 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3098
3099 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3100 &full_req_cnt);
3101 if (unlikely(res != 0)) {
2d70c103
NB		 3102 return res;
3103 }
3104
82de802a 3105 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3106
ce1025cd 3107 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3108 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3109 else
60a9eadb 3110 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3111
7c3f8fd1 3112 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3113 /*
3bb67df5 3114 * Either the port is not online or this request was from
b6a029e1
AE		 3115 * previous life, just abort the processing.
3116 */
3117 cmd->state = QLA_TGT_STATE_PROCESSED;
3118 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3119 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3120 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3121 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3122 cmd->reset_count, qpair->chip_reset);
82de802a 3123 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3124 return 0;
3125 }
3126
2d70c103 3127 /* Does F/W have an IOCBs for this request */
82de802a 3128 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3129 if (unlikely(res))
3130 goto out_unmap_unlock;
3131
f83adb61 3132 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3133 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3134 else
82de802a 3135 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3136 if (unlikely(res != 0)) {
82de802a 3137 qpair->req->cnt += full_req_cnt;
2d70c103 3138 goto out_unmap_unlock;
810e30bc 3139 }
2d70c103
NB		 3140
3141 pkt = (struct ctio7_to_24xx *)prm.pkt;
3142
3143 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3144 pkt->u.status0.flags |=
ad950360 3145 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3146 CTIO7_FLAGS_STATUS_MODE_0);
3147
f83adb61 3148 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3149 qlt_load_data_segments(&prm);
2d70c103
NB		 3150
3151 if (prm.add_status_pkt == 0) {
3152 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3153 pkt->u.status0.scsi_status =
3154 cpu_to_le16(prm.rq_result);
3155 pkt->u.status0.residual =
3156 cpu_to_le32(prm.residual);
ad950360 3157 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3158 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3159 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3160 pkt->u.status0.flags |=
ad950360 3161 cpu_to_le16(
2d70c103
NB		 3162 CTIO7_FLAGS_EXPLICIT_CONFORM |
3163 CTIO7_FLAGS_CONFORM_REQ);
3164 }
3165 }
3166
3167 } else {
3168 /*
3169 * We have already made sure that there is sufficient
3170 * amount of request entries to not drop HW lock in
3171 * req_pkt().
3172 */
3173 struct ctio7_to_24xx *ctio =
82de802a
QT		 3174 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3175 qpair->req);
2d70c103 3176
22d84726 3177 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3178 "Building additional status packet 0x%p.\n",
3179 ctio);
2d70c103 3180
f83adb61
QT		 3181 /*
3182 * T10Dif: ctio_crc2_to_fw overlay ontop of
3183 * ctio7_to_24xx
3184 */
2d70c103 3185 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3186 /* reset back to CTIO7 */
2d70c103 3187 ctio->entry_count = 1;
f83adb61 3188 ctio->entry_type = CTIO_TYPE7;
2d70c103 3189 ctio->dseg_count = 0;
ad950360 3190 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3191 CTIO7_FLAGS_DATA_IN);
3192
3193 /* Real finish is ctio_m1's finish */
3194 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3195 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3196 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3197
3198 /* qlt_24xx_init_ctio_to_isp will correct
3199 * all neccessary fields that's part of CTIO7.
3200 * There should be no residual of CTIO-CRC2 data.
3201 */
2d70c103
NB		 3202 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3203 &prm);
2d70c103
NB		 3204 }
3205 } else
3206 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3207
3208
3209 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3210 cmd->cmd_sent_to_fw = 1;
2d70c103 3211
63163e06
HM		 3212 /* Memory Barrier */
3213 wmb();
8abfa9e2
QT		 3214 if (qpair->reqq_start_iocbs)
3215 qpair->reqq_start_iocbs(qpair);
3216 else
3217 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3218 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3219
3220 return 0;
3221
3222out_unmap_unlock:
f9b6721a 3223 qlt_unmap_sg(vha, cmd);
82de802a 3224 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3225
3226 return res;
3227}
3228EXPORT_SYMBOL(qlt_xmit_response);
3229
3230int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3231{
3232 struct ctio7_to_24xx *pkt;
3233 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3234 struct qla_tgt *tgt = cmd->tgt;
3235 struct qla_tgt_prm prm;
82de802a 3236 unsigned long flags = 0;
2d70c103 3237 int res = 0;
82de802a 3238 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3239
3240 memset(&prm, 0, sizeof(prm));
3241 prm.cmd = cmd;
3242 prm.tgt = tgt;
3243 prm.sg = NULL;
3244 prm.req_cnt = 1;
3245
2d70c103
NB		 3246 /* Calculate number of entries and segments required */
3247 if (qlt_pci_map_calc_cnt(&prm) != 0)
3248 return -EAGAIN;
3249
7c3f8fd1 3250 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3251 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3252 /*
3bb67df5 3253 * Either the port is not online or this request was from
b6a029e1
AE		 3254 * previous life, just abort the processing.
3255 */
3256 cmd->state = QLA_TGT_STATE_NEED_DATA;
3257 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3258 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3259 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3260 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3261 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3262 return 0;
3263 }
3264
82de802a 3265 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3266 /* Does F/W have an IOCBs for this request */
82de802a 3267 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3268 if (res != 0)
3269 goto out_unlock_free_unmap;
f83adb61 3270 if (cmd->se_cmd.prot_op)
82de802a 3271 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3272 else
82de802a 3273 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3274
810e30bc 3275 if (unlikely(res != 0)) {
82de802a 3276 qpair->req->cnt += prm.req_cnt;
2d70c103 3277 goto out_unlock_free_unmap;
810e30bc
QT		 3278 }
3279
2d70c103 3280 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3281 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3282 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3283
3284 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3285 qlt_load_data_segments(&prm);
2d70c103
NB		 3286
3287 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3288 cmd->cmd_sent_to_fw = 1;
2d70c103 3289
63163e06
HM		 3290 /* Memory Barrier */
3291 wmb();
8abfa9e2
QT		 3292 if (qpair->reqq_start_iocbs)
3293 qpair->reqq_start_iocbs(qpair);
3294 else
3295 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3296 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3297
3298 return res;
3299
3300out_unlock_free_unmap:
f9b6721a 3301 qlt_unmap_sg(vha, cmd);
82de802a 3302 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3303
3304 return res;
3305}
3306EXPORT_SYMBOL(qlt_rdy_to_xfer);
3307
f83adb61
QT		 3308
3309/*
be25152c 3310 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3311 */
be25152c 3312static void
8abfa9e2 3313qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3314 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3315{
3316 uint8_t *ap = &sts->actual_dif[0];
3317 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3318 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3319 uint8_t scsi_status, sense_key, asc, ascq;
3320 unsigned long flags;
8abfa9e2 3321 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3322
be25152c 3323 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3324
be25152c
QT		 3325 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3326 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3327 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3328
be25152c
QT		 3329 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3330 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3331 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3332
be25152c
QT		 3333 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3334 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3335
be25152c 3336 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3337
be25152c
QT		 3338 /* check appl tag */
3339 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3340 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3341 "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]",
3342 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3343 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3344 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3345 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3346
3347 cmd->dif_err_code = DIF_ERR_APP;
3348 scsi_status = SAM_STAT_CHECK_CONDITION;
3349 sense_key = ABORTED_COMMAND;
3350 asc = 0x10;
3351 ascq = 0x2;
f83adb61
QT		 3352 }
3353
3354 /* check ref tag */
be25152c 3355 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3356 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3357 "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] ",
3358 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3359 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3360 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3361 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3362
3363 cmd->dif_err_code = DIF_ERR_REF;
3364 scsi_status = SAM_STAT_CHECK_CONDITION;
3365 sense_key = ABORTED_COMMAND;
3366 asc = 0x10;
3367 ascq = 0x3;
f83adb61
QT		 3368 goto out;
3369 }
3370
be25152c
QT		 3371 /* check guard */
3372 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3373 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3374 "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]",
3375 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3376 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3377 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3378 cmd->atio.u.isp24.fcp_hdr.ox_id);
3379
be25152c
QT		 3380 cmd->dif_err_code = DIF_ERR_GRD;
3381 scsi_status = SAM_STAT_CHECK_CONDITION;
3382 sense_key = ABORTED_COMMAND;
3383 asc = 0x10;
3384 ascq = 0x1;
f83adb61
QT		 3385 }
3386out:
be25152c
QT		 3387 switch (cmd->state) {
3388 case QLA_TGT_STATE_NEED_DATA:
3389 /* handle_data will load DIF error code */
3390 cmd->state = QLA_TGT_STATE_DATA_IN;
3391 vha->hw->tgt.tgt_ops->handle_data(cmd);
3392 break;
3393 default:
3394 spin_lock_irqsave(&cmd->cmd_lock, flags);
3395 if (cmd->aborted) {
3396 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3397 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3398 break;
3399 }
3400 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3401
8abfa9e2
QT		 3402 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3403 ascq);
be25152c
QT		 3404 /* assume scsi status gets out on the wire.
3405 * Will not wait for completion.
3406 */
3407 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3408 break;
3409 }
3410}
f83adb61 3411
a6ca8878
AP		 3412/* If hardware_lock held on entry, might drop it, then reaquire */
3413/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3414static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3415 struct imm_ntfy_from_isp *ntfy)
3416{
3417 struct nack_to_isp *nack;
3418 struct qla_hw_data *ha = vha->hw;
3419 request_t *pkt;
3420 int ret = 0;
3421
3422 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3423 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3424
ec7193e2 3425 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3426 if (pkt == NULL) {
3427 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3428 "qla_target(%d): %s failed: unable to allocate "
3429 "request packet\n", vha->vp_idx, __func__);
3430 return -ENOMEM;
3431 }
3432
3433 pkt->entry_type = NOTIFY_ACK_TYPE;
3434 pkt->entry_count = 1;
4f060736 3435 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3436
3437 nack = (struct nack_to_isp *)pkt;
3438 nack->ox_id = ntfy->ox_id;
3439
3440 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3441 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3442 nack->u.isp24.flags = ntfy->u.isp24.flags &
3443 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3444 }
3445
3446 /* terminate */
3447 nack->u.isp24.flags |=
3448 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3449
3450 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3451 nack->u.isp24.status = ntfy->u.isp24.status;
3452 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3453 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3454 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3455 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3456 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3457 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3458
3459 qla2x00_start_iocbs(vha, vha->req);
3460 return ret;
3461}
3462
3463static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3464 struct imm_ntfy_from_isp *imm, int ha_locked)
3465{
3466 unsigned long flags = 0;
3467 int rc;
3468
a6ca8878
AP		 3469 if (ha_locked) {
3470 rc = __qlt_send_term_imm_notif(vha, imm);
3471
3472#if 0 /* Todo */
3473 if (rc == -ENOMEM)
3474 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3475#else
3476 if (rc) {
3477 }
a6ca8878
AP		 3478#endif
3479 goto done;
3480 }
3481
3482 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3483 rc = __qlt_send_term_imm_notif(vha, imm);
3484
3485#if 0 /* Todo */
3486 if (rc == -ENOMEM)
3487 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3488#endif
3489
3490done:
3491 if (!ha_locked)
3492 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3493}
3494
83548fe2
QT		 3495/*
3496 * If hardware_lock held on entry, might drop it, then reaquire
3497 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3498 */
82de802a 3499static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3500 struct qla_tgt_cmd *cmd,
3501 struct atio_from_isp *atio)
3502{
82de802a 3503 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3504 struct ctio7_to_24xx *ctio24;
3505 struct qla_hw_data *ha = vha->hw;
3506 request_t *pkt;
3507 int ret = 0;
33a5fcee 3508 uint16_t temp;
2d70c103 3509
83548fe2 3510 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3511
72fcd4eb
QT		 3512 if (cmd)
3513 vha = cmd->vha;
3514
82de802a 3515 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3516 if (pkt == NULL) {
3517 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3518 "qla_target(%d): %s failed: unable to allocate "
3519 "request packet\n", vha->vp_idx, __func__);
3520 return -ENOMEM;
3521 }
3522
3523 if (cmd != NULL) {
3524 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3525 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3526 "qla_target(%d): Terminating cmd %p with "
3527 "incorrect state %d\n", vha->vp_idx, cmd,
3528 cmd->state);
3529 } else
3530 ret = 1;
3531 }
3532
60a9eadb 3533 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3534 pkt->entry_count = 1;
3535 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3536
3537 ctio24 = (struct ctio7_to_24xx *)pkt;
3538 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3539 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3540 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3541 ctio24->vp_index = vha->vp_idx;
3542 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3543 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3544 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3545 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3546 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3547 CTIO7_FLAGS_TERMINATE;
3548 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3549 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3550 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3551
3552 /* Most likely, it isn't needed */
3553 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3554 &atio->u.isp24.fcp_cmnd.add_cdb[
3555 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3556 if (ctio24->u.status1.residual != 0)
3557 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3558
63163e06
HM		 3559 /* Memory Barrier */
3560 wmb();
8abfa9e2
QT		 3561 if (qpair->reqq_start_iocbs)
3562 qpair->reqq_start_iocbs(qpair);
3563 else
3564 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3565 return ret;
3566}
3567
82de802a 3568static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3569 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3570 int ul_abort)
2d70c103 3571{
82de802a 3572 struct scsi_qla_host *vha;
6bc85dd5 3573 unsigned long flags = 0;
2d70c103
NB		 3574 int rc;
3575
82de802a
QT		 3576 /* why use different vha? NPIV */
3577 if (cmd)
3578 vha = cmd->vha;
3579 else
3580 vha = qpair->vha;
2d70c103
NB		 3581
3582 if (ha_locked) {
82de802a 3583 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3584 if (rc == -ENOMEM)
3585 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3586 goto done;
3587 }
82de802a
QT		 3588 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3589 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3590 if (rc == -ENOMEM)
3591 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3592
2d70c103 3593done:
a07100e0 3594 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3595 if (cmd->sg_mapped)
3596 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3597 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3598 }
6bc85dd5
HM		 3599
3600 if (!ha_locked)
82de802a 3601 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3602
7b898542 3603 return;
2d70c103
NB		 3604}
3605
33e79977
QT		 3606static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3607{
3608 struct list_head free_list;
3609 struct qla_tgt_cmd *cmd, *tcmd;
3610
3611 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3612 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3613
3614 cmd = tcmd = NULL;
3615 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3616 INIT_LIST_HEAD(&free_list);
3617 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3618
3619 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3620 list_del(&cmd->cmd_list);
3621 /* This cmd was never sent to TCM. There is no need
3622 * to schedule free or call free_cmd
3623 */
3624 qlt_free_cmd(cmd);
3625 vha->hw->tgt.num_qfull_cmds_alloc--;
3626 }
3627 }
3628 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3629}
3630
3631static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3632{
3633 uint32_t total_leaked;
3634
3635 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3636
3637 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3638 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3639
3640 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3641 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3642 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3643
3644 if (IS_P3P_TYPE(vha->hw))
3645 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3646 else
3647 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3648 qla2xxx_wake_dpc(vha);
3649 }
3650
3651}
3652
a07100e0 3653int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3654{
3655 struct qla_tgt *tgt = cmd->tgt;
3656 struct scsi_qla_host *vha = tgt->vha;
3657 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3658 unsigned long flags;
7359df25
AP		 3659
3660 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3661 "qla_target(%d): terminating exchange for aborted cmd=%p "
3662 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3663 se_cmd->tag);
3664
a07100e0
QT		 3665 spin_lock_irqsave(&cmd->cmd_lock, flags);
3666 if (cmd->aborted) {
3667 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3668 /*
3669 * It's normal to see 2 calls in this path:
3670 * 1) XFER Rdy completion + CMD_T_ABORT
3671 * 2) TCM TMR - drain_state_list
3672 */
83548fe2
QT		 3673 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3674 "multiple abort. %p transport_state %x, t_state %x, "
3675 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3676 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3677 return EIO;
3678 }
193b50b9 3679 cmd->aborted = 1;
1eb42f96 3680 cmd->trc_flags |= TRC_ABORT;
a07100e0 3681 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3682
82de802a 3683 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3684 return 0;
7359df25
AP		 3685}
3686EXPORT_SYMBOL(qlt_abort_cmd);
3687
2d70c103
NB		 3688void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3689{
5d964837 3690 struct fc_port *sess = cmd->sess;
51a07f84 3691
f83adb61
QT		 3692 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3693 "%s: se_cmd[%p] ox_id %04x\n",
3694 __func__, &cmd->se_cmd,
3695 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3696
e07f8f65
SK		 3697 BUG_ON(cmd->cmd_in_wq);
3698
a07100e0
QT		 3699 if (cmd->sg_mapped)
3700 qlt_unmap_sg(cmd->vha, cmd);
3701
33e79977
QT		 3702 if (!cmd->q_full)
3703 qlt_decr_num_pend_cmds(cmd->vha);
3704
f83adb61 3705 BUG_ON(cmd->sg_mapped);
e07f8f65 3706 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3707 if (unlikely(cmd->free_sg))
3708 kfree(cmd->sg);
51a07f84
NB		 3709
3710 if (!sess || !sess->se_sess) {
3711 WARN_ON(1);
3712 return;
3713 }
e07f8f65 3714 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3715 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3716}
3717EXPORT_SYMBOL(qlt_free_cmd);
3718
2d70c103
NB		 3719/*
3720 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3721 */
82de802a 3722static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3723 struct qla_tgt_cmd *cmd, uint32_t status)
3724{
3725 int term = 0;
82de802a 3726 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3727
be25152c 3728 if (cmd->se_cmd.prot_op)
83548fe2 3729 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3730 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3731 "se_cmd=%p tag[%x] op %#x/%s",
3732 cmd->lba, cmd->lba,
3733 cmd->num_blks, &cmd->se_cmd,
3734 cmd->atio.u.isp24.exchange_addr,
3735 cmd->se_cmd.prot_op,
3736 prot_op_str(cmd->se_cmd.prot_op));
3737
2d70c103
NB		 3738 if (ctio != NULL) {
3739 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3740 term = !(c->flags &
ad950360 3741 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3742 } else
3743 term = 1;
3744
3745 if (term)
82de802a 3746 qlt_term_ctio_exchange(qpair, ctio, cmd, status);
2d70c103
NB		 3747
3748 return term;
3749}
3750
2d70c103
NB		 3751
3752/* ha->hardware_lock supposed to be held on entry */
3753static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3754 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103
NB		 3755{
3756 struct qla_tgt_cmd *cmd = NULL;
82de802a
QT		 3757 struct req_que *req;
3758 int qid = GET_QID(handle);
3759 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3760
82de802a
QT		 3761 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3762 return NULL;
2d70c103 3763
82de802a
QT		 3764 if (qid == rsp->req->id) {
3765 req = rsp->req;
3766 } else if (vha->hw->req_q_map[qid]) {
3767 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3768 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3769 vha->vp_idx, rsp->id, handle);
3770 req = vha->hw->req_q_map[qid];
3771 } else {
3772 return NULL;
3773 }
667024a3 3774
82de802a 3775 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3776
82de802a 3777 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3778 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3779 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3780 "qla_target(%d): Wrong handle %x received\n",
3781 vha->vp_idx, handle);
3782 return NULL;
3783 }
82de802a
QT		 3784
3785 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3786 if (unlikely(cmd == NULL)) {
c5419e26 3787 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3788 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3789 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3790 return NULL;
3791 }
82de802a 3792 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3793 } else if (ctio != NULL) {
3794 /* We can't get loop ID from CTIO7 */
3795 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3796 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3797 "support NULL handles\n", vha->vp_idx);
3798 return NULL;
3799 }
3800
3801 return cmd;
3802}
3803
c0cb4496 3804/* hardware_lock should be held by caller. */
c5419e26 3805void
c0cb4496
AE		 3806qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3807{
3808 struct qla_hw_data *ha = vha->hw;
c0cb4496
AE		 3809
3810 if (cmd->sg_mapped)
3811 qlt_unmap_sg(vha, cmd);
3812
c0cb4496
AE		 3813 /* TODO: fix debug message type and ids. */
3814 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3815 ql_dbg(ql_dbg_io, vha, 0xff00,
82de802a 3816 "HOST-ABORT: state=PROCESSED.\n");
c0cb4496
AE		 3817 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3818 cmd->write_data_transferred = 0;
3819 cmd->state = QLA_TGT_STATE_DATA_IN;
3820
3821 ql_dbg(ql_dbg_io, vha, 0xff01,
82de802a 3822 "HOST-ABORT: state=DATA_IN.\n");
c0cb4496
AE		 3823
3824 ha->tgt.tgt_ops->handle_data(cmd);
3825 return;
c0cb4496
AE		 3826 } else {
3827 ql_dbg(ql_dbg_io, vha, 0xff03,
82de802a 3828 "HOST-ABORT: state=BAD(%d).\n",
c0cb4496
AE		 3829 cmd->state);
3830 dump_stack();
3831 }
3832
1eb42f96 3833 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3834 ha->tgt.tgt_ops->free_cmd(cmd);
3835}
3836
2d70c103
NB		 3837/*
3838 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3839 */
82de802a
QT		 3840static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3841 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3842{
3843 struct qla_hw_data *ha = vha->hw;
3844 struct se_cmd *se_cmd;
2d70c103 3845 struct qla_tgt_cmd *cmd;
82de802a 3846 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3847
2d70c103
NB		 3848 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3849 /* That could happen only in case of an error/reset/abort */
3850 if (status != CTIO_SUCCESS) {
3851 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3852 "Intermediate CTIO received"
3853 " (status %x)\n", status);
3854 }
3855 return;
3856 }
3857
82de802a 3858 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3859 if (cmd == NULL)
2d70c103 3860 return;
092e1dc3 3861
2d70c103 3862 se_cmd = &cmd->se_cmd;
d564a372 3863 cmd->cmd_sent_to_fw = 0;
2d70c103 3864
f9b6721a 3865 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3866
3867 if (unlikely(status != CTIO_SUCCESS)) {
3868 switch (status & 0xFFFF) {
3869 case CTIO_LIP_RESET:
3870 case CTIO_TARGET_RESET:
3871 case CTIO_ABORTED:
7b898542 3872 /* driver request abort via Terminate exchange */
2d70c103
NB		 3873 case CTIO_TIMEOUT:
3874 case CTIO_INVALID_RX_ID:
3875 /* They are OK */
3876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3877 "qla_target(%d): CTIO with "
3878 "status %#x received, state %x, se_cmd %p, "
3879 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3880 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3881 status, cmd->state, se_cmd);
3882 break;
3883
3884 case CTIO_PORT_LOGGED_OUT:
3885 case CTIO_PORT_UNAVAILABLE:
71cdc079 3886 {
dacb5822
HM		 3887 int logged_out =
3888 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3889
2d70c103 3890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3891 "qla_target(%d): CTIO with %s status %x "
2d70c103 3892 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3893 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3894 status, cmd->state, se_cmd);
2d70c103 3895
71cdc079
AP		 3896 if (logged_out && cmd->sess) {
3897 /*
3898 * Session is already logged out, but we need
3899 * to notify initiator, who's not aware of this
3900 */
3901 cmd->sess->logout_on_delete = 0;
3902 cmd->sess->send_els_logo = 1;
83548fe2 3903 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3904 "%s %d %8phC post del sess\n",
3905 __func__, __LINE__, cmd->sess->port_name);
3906
d8630bb9 3907 qlt_schedule_sess_for_deletion(cmd->sess);
71cdc079
AP		 3908 }
3909 break;
3910 }
f83adb61
QT		 3911 case CTIO_DIF_ERROR: {
3912 struct ctio_crc_from_fw *crc =
3913 (struct ctio_crc_from_fw *)ctio;
3914 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3915 "qla_target(%d): CTIO with DIF_ERROR status %x "
3916 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3917 "expect_dif[0x%llx]\n",
f83adb61
QT		 3918 vha->vp_idx, status, cmd->state, se_cmd,
3919 *((u64 *)&crc->actual_dif[0]),
3920 *((u64 *)&crc->expected_dif[0]));
3921
8abfa9e2 3922 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 3923 return;
f83adb61 3924 }
2d70c103
NB		 3925 default:
3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3927 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3928 vha->vp_idx, status, cmd->state, se_cmd);
3929 break;
3930 }
3931
7b898542 3932
193b50b9 3933 /* "cmd->aborted" means
7b898542
QT		 3934 * cmd is already aborted/terminated, we don't
3935 * need to terminate again. The exchange is already
3936 * cleaned up/freed at FW level. Just cleanup at driver
3937 * level.
3938 */
3939 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3940 (!cmd->aborted)) {
1eb42f96 3941 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 3942 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 3943 return;
7b898542 3944 }
2d70c103
NB		 3945 }
3946
3947 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3948 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3949 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3950 cmd->state = QLA_TGT_STATE_DATA_IN;
3951
52c82823 3952 if (status == CTIO_SUCCESS)
2d70c103
NB		 3953 cmd->write_data_transferred = 1;
3954
2d70c103
NB		 3955 ha->tgt.tgt_ops->handle_data(cmd);
3956 return;
193b50b9 3957 } else if (cmd->aborted) {
1eb42f96 3958 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3960 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3961 } else {
1eb42f96 3962 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3964 "qla_target(%d): A command in state (%d) should "
3965 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3966 }
3967
7b898542 3968 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3969 !cmd->aborted) {
2d70c103
NB		 3970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3971 dump_stack();
3972 }
3973
3974 ha->tgt.tgt_ops->free_cmd(cmd);
3975}
3976
2d70c103
NB		 3977static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3978 uint8_t task_codes)
3979{
3980 int fcp_task_attr;
3981
3982 switch (task_codes) {
3983 case ATIO_SIMPLE_QUEUE:
68d81f40 3984 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3985 break;
3986 case ATIO_HEAD_OF_QUEUE:
68d81f40 3987 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3988 break;
3989 case ATIO_ORDERED_QUEUE:
68d81f40 3990 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3991 break;
3992 case ATIO_ACA_QUEUE:
68d81f40 3993 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3994 break;
3995 case ATIO_UNTAGGED:
68d81f40 3996 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3997 break;
3998 default:
3999 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4000 "qla_target: unknown task code %x, use ORDERED instead\n",
4001 task_codes);
68d81f40 4002 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4003 break;
4004 }
4005
4006 return fcp_task_attr;
4007}
4008
5d964837 4009static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 4010 uint8_t *);
4011/*
4012 * Process context for I/O path into tcm_qla2xxx code
4013 */
51a07f84 4014static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 4015{
2d70c103
NB		 4016 scsi_qla_host_t *vha = cmd->vha;
4017 struct qla_hw_data *ha = vha->hw;
5d964837 4018 struct fc_port *sess = cmd->sess;
2d70c103
NB		 4019 struct atio_from_isp *atio = &cmd->atio;
4020 unsigned char *cdb;
4021 unsigned long flags;
4022 uint32_t data_length;
4023 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4024 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4025
e07f8f65 4026 cmd->cmd_in_wq = 0;
1eb42f96 4027 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4028
193b50b9 4029 if (cmd->aborted) {
8b2f5ff3
SN		 4030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4031 "cmd with tag %u is aborted\n",
4032 cmd->atio.u.isp24.exchange_addr);
4033 goto out_term;
4034 }
4035
a07100e0 4036 spin_lock_init(&cmd->cmd_lock);
2d70c103 4037 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4038 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4039
4040 if (atio->u.isp24.fcp_cmnd.rddata &&
4041 atio->u.isp24.fcp_cmnd.wrdata) {
4042 bidi = 1;
4043 data_dir = DMA_TO_DEVICE;
4044 } else if (atio->u.isp24.fcp_cmnd.rddata)
4045 data_dir = DMA_FROM_DEVICE;
4046 else if (atio->u.isp24.fcp_cmnd.wrdata)
4047 data_dir = DMA_TO_DEVICE;
4048 else
4049 data_dir = DMA_NONE;
4050
4051 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4052 atio->u.isp24.fcp_cmnd.task_attr);
4053 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4054 &atio->u.isp24.fcp_cmnd.add_cdb[
4055 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4056
51a07f84
NB		 4057 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4058 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4059 if (ret != 0)
4060 goto out_term;
4061 /*
4062 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4063 */
7560151b 4064 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4065 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4066 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4067 return;
4068
4069out_term:
667024a3 4070 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4071 /*
fae9eaf8
RD		 4072 * cmd has not sent to target yet, so pass NULL as the second
4073 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4074 */
1eb42f96 4075 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4076 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4077 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4078
4079 qlt_decr_num_pend_cmds(vha);
51a07f84 4080 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
82de802a 4081 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b
QT		 4082
4083 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4084 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4085 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4086}
4087
4088static void qlt_do_work(struct work_struct *work)
4089{
4090 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4091 scsi_qla_host_t *vha = cmd->vha;
4092 unsigned long flags;
4093
4094 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4095 list_del(&cmd->cmd_list);
4096 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4097
4098 __qlt_do_work(cmd);
4099}
4100
09620eeb
QT		 4101void qlt_clr_qp_table(struct scsi_qla_host *vha)
4102{
4103 unsigned long flags;
4104 struct qla_hw_data *ha = vha->hw;
4105 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4106 void *node;
4107 u64 key = 0;
4108
4109 ql_log(ql_log_info, vha, 0x706c,
4110 "User update Number of Active Qpairs %d\n",
4111 ha->tgt.num_act_qpairs);
4112
4113 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4114
4115 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4116 btree_remove64(&tgt->lun_qpair_map, key);
4117
4118 ha->base_qpair->lun_cnt = 0;
4119 for (key = 0; key < ha->max_qpairs; key++)
4120 if (ha->queue_pair_map[key])
4121 ha->queue_pair_map[key]->lun_cnt = 0;
4122
4123 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4124}
4125
e326d22a
QT		 4126static void qlt_assign_qpair(struct scsi_qla_host *vha,
4127 struct qla_tgt_cmd *cmd)
4128{
4129 struct qla_qpair *qpair, *qp;
4130 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4131 struct qla_qpair_hint *h;
4132
4133 if (vha->flags.qpairs_available) {
4134 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4135 if (unlikely(!h)) {
4136 /* spread lun to qpair ratio evently */
4137 int lcnt = 0, rc;
4138 struct scsi_qla_host *base_vha =
4139 pci_get_drvdata(vha->hw->pdev);
4140
4141 qpair = vha->hw->base_qpair;
4142 if (qpair->lun_cnt == 0) {
4143 qpair->lun_cnt++;
4144 h = qla_qpair_to_hint(tgt, qpair);
4145 BUG_ON(!h);
4146 rc = btree_insert64(&tgt->lun_qpair_map,
4147 cmd->unpacked_lun, h, GFP_ATOMIC);
4148 if (rc) {
4149 qpair->lun_cnt--;
4150 ql_log(ql_log_info, vha, 0xd037,
4151 "Unable to insert lun %llx into lun_qpair_map\n",
4152 cmd->unpacked_lun);
4153 }
4154 goto out;
4155 } else {
4156 lcnt = qpair->lun_cnt;
4157 }
4158
4159 h = NULL;
4160 list_for_each_entry(qp, &base_vha->qp_list,
4161 qp_list_elem) {
4162 if (qp->lun_cnt == 0) {
4163 qp->lun_cnt++;
4164 h = qla_qpair_to_hint(tgt, qp);
4165 BUG_ON(!h);
4166 rc = btree_insert64(&tgt->lun_qpair_map,
4167 cmd->unpacked_lun, h, GFP_ATOMIC);
4168 if (rc) {
4169 qp->lun_cnt--;
4170 ql_log(ql_log_info, vha, 0xd038,
4171 "Unable to insert lun %llx into lun_qpair_map\n",
4172 cmd->unpacked_lun);
4173 }
4174 qpair = qp;
4175 goto out;
4176 } else {
4177 if (qp->lun_cnt < lcnt) {
4178 lcnt = qp->lun_cnt;
4179 qpair = qp;
4180 continue;
4181 }
4182 }
4183 }
4184 BUG_ON(!qpair);
4185 qpair->lun_cnt++;
4186 h = qla_qpair_to_hint(tgt, qpair);
4187 BUG_ON(!h);
4188 rc = btree_insert64(&tgt->lun_qpair_map,
4189 cmd->unpacked_lun, h, GFP_ATOMIC);
4190 if (rc) {
4191 qpair->lun_cnt--;
4192 ql_log(ql_log_info, vha, 0xd039,
4193 "Unable to insert lun %llx into lun_qpair_map\n",
4194 cmd->unpacked_lun);
4195 }
4196 }
4197 } else {
4198 h = &tgt->qphints[0];
4199 }
4200out:
4201 cmd->qpair = h->qpair;
4202 cmd->se_cmd.cpuid = h->cpuid;
4203}
4204
51a07f84 4205static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4206 struct fc_port *sess,
51a07f84
NB		 4207 struct atio_from_isp *atio)
4208{
4209 struct se_session *se_sess = sess->se_sess;
4210 struct qla_tgt_cmd *cmd;
4211 int tag;
4212
4213 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4214 if (tag < 0)
4215 return NULL;
4216
4217 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4218 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4219 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4220 memcpy(&cmd->atio, atio, sizeof(*atio));
4221 cmd->state = QLA_TGT_STATE_NEW;
4222 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4223 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4224 cmd->vha = vha;
4225 cmd->se_cmd.map_tag = tag;
4226 cmd->sess = sess;
4227 cmd->loop_id = sess->loop_id;
4228 cmd->conf_compl_supported = sess->conf_compl_supported;
4229
1eb42f96 4230 cmd->trc_flags = 0;
9fce1254
KS		 4231 cmd->jiffies_at_alloc = get_jiffies_64();
4232
e326d22a
QT		 4233 cmd->unpacked_lun = scsilun_to_int(
4234 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4235 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4236 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4237 cmd->vp_idx = vha->vp_idx;
9fce1254 4238
51a07f84
NB		 4239 return cmd;
4240}
4241
2d70c103
NB		 4242/* ha->hardware_lock supposed to be held on entry */
4243static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4244 struct atio_from_isp *atio)
4245{
51a07f84 4246 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4247 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4248 struct fc_port *sess;
2d70c103 4249 struct qla_tgt_cmd *cmd;
5d964837 4250 unsigned long flags;
a4239945 4251 port_id_t id;
2d70c103
NB		 4252
4253 if (unlikely(tgt->tgt_stop)) {
667024a3 4254 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103 4255 "New command while device %p is shutting down\n", tgt);
7cf95f7e 4256 return -ENODEV;
2d70c103
NB		 4257 }
4258
a4239945
QT		 4259 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4260 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4261 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4262 if (IS_SW_RESV_ADDR(id))
4263 return -EBUSY;
4264
51a07f84 4265 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
fb35265b
QT		 4266 if (unlikely(!sess))
4267 return -EFAULT;
e52a8b45
AP		 4268
4269 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4270 * session deletion, but it's still in sess_del_work wq */
726b8548 4271 if (sess->deleted) {
83548fe2 4272 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4273 "New command while old session %p is being deleted\n",
4274 sess);
4275 return -EFAULT;
4276 }
4277
51a07f84
NB		 4278 /*
4279 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4280 */
726b8548 4281 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4282 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4283 "%s: kref_get fail, %8phC oxid %x \n",
4284 __func__, sess->port_name,
4285 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4286 return -EFAULT;
4287 }
51a07f84
NB		 4288
4289 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4290 if (!cmd) {
667024a3 4291 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4292 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4293 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4294 ha->tgt.tgt_ops->put_sess(sess);
4295 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
7cf95f7e 4296 return -EBUSY;
2d70c103
NB		 4297 }
4298
e07f8f65 4299 cmd->cmd_in_wq = 1;
1eb42f96 4300 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4301
726b8548 4302 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4303 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4304 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4305
2d70c103 4306 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4307 if (vha->flags.qpairs_available) {
4308 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4309 } else if (ha->msix_count) {
fb3269ba
QT		 4310 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4311 queue_work_on(smp_processor_id(), qla_tgt_wq,
4312 &cmd->work);
4313 else
4314 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4315 &cmd->work);
4316 } else {
4317 queue_work(qla_tgt_wq, &cmd->work);
4318 }
2d70c103 4319
82de802a 4320 return 0;
2d70c103
NB		 4321}
4322
4323/* ha->hardware_lock supposed to be held on entry */
5d964837 4324static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4325 int fn, void *iocb, int flags)
4326{
4327 struct scsi_qla_host *vha = sess->vha;
4328 struct qla_hw_data *ha = vha->hw;
4329 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4330 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4331 int res;
2d70c103
NB		 4332
4333 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4334 if (!mcmd) {
4335 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4336 "qla_target(%d): Allocation of management "
4337 "command failed, some commands and their data could "
4338 "leak\n", vha->vp_idx);
4339 return -ENOMEM;
4340 }
4341 memset(mcmd, 0, sizeof(*mcmd));
4342 mcmd->sess = sess;
4343
4344 if (iocb) {
4345 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4346 sizeof(mcmd->orig_iocb.imm_ntfy));
4347 }
4348 mcmd->tmr_func = fn;
4349 mcmd->flags = flags;
7c3f8fd1 4350 mcmd->reset_count = ha->base_qpair->chip_reset;
82de802a 4351 mcmd->qpair = ha->base_qpair;
72fcd4eb 4352 mcmd->vha = vha;
2d70c103
NB		 4353
4354 switch (fn) {
2d70c103 4355 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4356 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4357 break;
2d70c103
NB		 4358 }
4359
be92fc3f 4360 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4361 if (res != 0) {
4362 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4363 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4364 sess->vha->vp_idx, res);
4365 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4366 return -EFAULT;
4367 }
4368
4369 return 0;
4370}
4371
4372/* ha->hardware_lock supposed to be held on entry */
4373static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4374{
4375 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4376 struct qla_hw_data *ha = vha->hw;
5d964837 4377 struct fc_port *sess;
f775bd14 4378 u64 unpacked_lun;
52c82823 4379 int fn;
7560151b 4380 unsigned long flags;
2d70c103 4381
2d70c103 4382 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4383
4384 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4385 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4386 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4387 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4388
f775bd14
QT		 4389 unpacked_lun =
4390 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103 4391
fb35265b 4392 if (sess == NULL || sess->deleted)
e52a8b45
AP		 4393 return -EFAULT;
4394
2d70c103
NB		 4395 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4396}
4397
4398/* ha->hardware_lock supposed to be held on entry */
4399static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4400 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4401{
4402 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4403 struct qla_hw_data *ha = vha->hw;
4404 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4405 u64 unpacked_lun;
2d70c103
NB		 4406 int rc;
4407
4408 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4409 if (mcmd == NULL) {
4410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4411 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4412 vha->vp_idx, __func__);
4413 return -ENOMEM;
4414 }
4415 memset(mcmd, 0, sizeof(*mcmd));
4416
4417 mcmd->sess = sess;
4418 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4419 sizeof(mcmd->orig_iocb.imm_ntfy));
4420
f775bd14
QT		 4421 unpacked_lun =
4422 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4423 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4424 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4425 mcmd->qpair = ha->base_qpair;
2d70c103 4426
be92fc3f 4427 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4428 le16_to_cpu(iocb->u.isp2x.seq_id));
4429 if (rc != 0) {
4430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4431 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4432 vha->vp_idx, rc);
4433 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4434 return -EFAULT;
4435 }
4436
4437 return 0;
4438}
4439
4440/* ha->hardware_lock supposed to be held on entry */
4441static int qlt_abort_task(struct scsi_qla_host *vha,
4442 struct imm_ntfy_from_isp *iocb)
4443{
4444 struct qla_hw_data *ha = vha->hw;
5d964837 4445 struct fc_port *sess;
2d70c103 4446 int loop_id;
7560151b 4447 unsigned long flags;
2d70c103
NB		 4448
4449 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4450
7560151b 4451 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4452 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4453 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4454
2d70c103
NB		 4455 if (sess == NULL) {
4456 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4457 "qla_target(%d): task abort for unexisting "
4458 "session\n", vha->vp_idx);
0e8cd71c 4459 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4460 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4461 }
4462
4463 return __qlt_abort_task(vha, iocb, sess);
4464}
4465
a6ca8878
AP		 4466void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4467{
726b8548
QT		 4468 if (rc != MBS_COMMAND_COMPLETE) {
4469 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4470 "%s: se_sess %p / sess %p from"
4471 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4472 " LOGO failed: %#x\n",
4473 __func__,
4474 fcport->se_sess,
4475 fcport,
4476 fcport->port_name, fcport->loop_id,
4477 fcport->d_id.b.domain, fcport->d_id.b.area,
4478 fcport->d_id.b.al_pa, rc);
4479 }
4480
4481 fcport->logout_completed = 1;
a6ca8878
AP		 4482}
4483
a6ca8878
AP		 4484/*
4485* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4486*
4487* Schedules sessions with matching port_id/loop_id but different wwn for
4488* deletion. Returns existing session with matching wwn if present.
4489* Null otherwise.
4490*/
726b8548
QT		 4491struct fc_port *
4492qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4493 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4494{
5d964837 4495 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4496 uint64_t other_wwn;
4497
b7bd104e
AP		 4498 *conflict_sess = NULL;
4499
5d964837 4500 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4501
4502 other_wwn = wwn_to_u64(other_sess->port_name);
4503
4504 if (wwn == other_wwn) {
4505 WARN_ON(sess);
4506 sess = other_sess;
4507 continue;
4508 }
4509
4510 /* find other sess with nport_id collision */
37cacc0a 4511 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4512 if (loop_id != other_sess->loop_id) {
726b8548 4513 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4514 "Invalidating sess %p loop_id %d wwn %llx.\n",
4515 other_sess, other_sess->loop_id, other_wwn);
4516
4517 /*
4518 * logout_on_delete is set by default, but another
4519 * session that has the same s_id/loop_id combo
4520 * might have cleared it when requested this session
4521 * deletion, so don't touch it
4522 */
94cff6e1 4523 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4524 } else {
4525 /*
4526 * Another wwn used to have our s_id/loop_id
b7bd104e 4527 * kill the session, but don't free the loop_id
a6ca8878 4528 */
83548fe2 4529 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4530 "Invalidating sess %p loop_id %d wwn %llx.\n",
4531 other_sess, other_sess->loop_id, other_wwn);
4532
b7bd104e 4533 other_sess->keep_nport_handle = 1;
ba743f91
QT		 4534 if (other_sess->disc_state != DSC_DELETED)
4535 *conflict_sess = other_sess;
94cff6e1 4536 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4537 }
4538 continue;
4539 }
4540
4541 /* find other sess with nport handle collision */
726b8548
QT		 4542 if ((loop_id == other_sess->loop_id) &&
4543 (loop_id != FC_NO_LOOP_ID)) {
4544 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4545 "Invalidating sess %p loop_id %d wwn %llx.\n",
4546 other_sess, other_sess->loop_id, other_wwn);
4547
4548 /* Same loop_id but different s_id
4549 * Ok to kill and logout */
94cff6e1 4550 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4551 }
4552 }
4553
4554 return sess;
4555}
4556
daddf5cf
AP		 4557/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4558static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4559{
4560 struct qla_tgt_sess_op *op;
4561 struct qla_tgt_cmd *cmd;
4562 uint32_t key;
4563 int count = 0;
8b631d87 4564 unsigned long flags;
daddf5cf
AP		 4565
4566 key = (((u32)s_id->b.domain << 16) |
4567 ((u32)s_id->b.area << 8) |
4568 ((u32)s_id->b.al_pa));
4569
8b631d87 4570 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4571 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4572 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4573
daddf5cf
AP		 4574 if (op_key == key) {
4575 op->aborted = true;
4576 count++;
4577 }
4578 }
41dc529a
QT		 4579
4580 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4581 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4582 if (op_key == key) {
4583 op->aborted = true;
4584 count++;
4585 }
4586 }
4587
daddf5cf
AP		 4588 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4589 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4590 if (cmd_key == key) {
193b50b9 4591 cmd->aborted = 1;
daddf5cf
AP		 4592 count++;
4593 }
4594 }
8b631d87 4595 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4596
4597 return count;
4598}
4599
9cd883f0
QT		 4600static int qlt_handle_login(struct scsi_qla_host *vha,
4601 struct imm_ntfy_from_isp *iocb)
4602{
4603 struct fc_port *sess = NULL, *conflict_sess = NULL;
4604 uint64_t wwn;
4605 port_id_t port_id;
4606 uint16_t loop_id, wd3_lo;
4607 int res = 0;
4608 struct qlt_plogi_ack_t *pla;
4609 unsigned long flags;
4610
4611 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4612
4613 port_id.b.domain = iocb->u.isp24.port_id[2];
4614 port_id.b.area = iocb->u.isp24.port_id[1];
4615 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4616 port_id.b.rsvd_1 = 0;
4617
4618 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4619
4620 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4621 abort_cmds_for_s_id(vha, &port_id);
4622
4623 if (wwn) {
4624 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4625 sess = qlt_find_sess_invalidate_other(vha, wwn,
4626 port_id, loop_id, &conflict_sess);
4627 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4628 }
4629
4630 if (IS_SW_RESV_ADDR(port_id)) {
4631 res = 1;
4632 goto out;
4633 }
4634
4635 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4636 if (!pla) {
4637 qlt_send_term_imm_notif(vha, iocb, 1);
4638 goto out;
4639 }
4640
4641 if (conflict_sess) {
4642 conflict_sess->login_gen++;
4643 qlt_plogi_ack_link(vha, pla, conflict_sess,
4644 QLT_PLOGI_LINK_CONFLICT);
4645 }
4646
4647 if (!sess) {
4648 pla->ref_count++;
4649 ql_dbg(ql_dbg_disc, vha, 0xffff,
4650 "%s %d %8phC post new sess\n",
4651 __func__, __LINE__, iocb->u.isp24.port_name);
a4239945
QT		 4652 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4653 qla24xx_post_newsess_work(vha, &port_id,
4654 iocb->u.isp24.port_name,
4655 iocb->u.isp24.u.plogi.node_name,
4656 pla, FC4_TYPE_UNKNOWN);
4657 else
4658 qla24xx_post_newsess_work(vha, &port_id,
4659 iocb->u.isp24.port_name, NULL,
4660 pla, FC4_TYPE_UNKNOWN);
4661
9cd883f0
QT		 4662 goto out;
4663 }
4664
4665 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4666 sess->d_id = port_id;
4667 sess->login_gen++;
4668
4669 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4670 sess->fw_login_state = DSC_LS_PRLI_PEND;
4671 sess->local = 0;
4672 sess->loop_id = loop_id;
4673 sess->d_id = port_id;
4674 sess->fw_login_state = DSC_LS_PRLI_PEND;
4675 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4676
4677 if (wd3_lo & BIT_7)
4678 sess->conf_compl_supported = 1;
4679
4680 if ((wd3_lo & BIT_4) == 0)
4681 sess->port_type = FCT_INITIATOR;
4682 else
4683 sess->port_type = FCT_TARGET;
4684
4685 } else
4686 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4687
4688
4689 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4690 "%s %d %8phC DS %d\n",
4691 __func__, __LINE__, sess->port_name, sess->disc_state);
4692
4693 switch (sess->disc_state) {
4694 case DSC_DELETED:
4695 qlt_plogi_ack_unref(vha, pla);
4696 break;
4697
4698 default:
4699 /*
4700 * Under normal circumstances we want to release nport handle
4701 * during LOGO process to avoid nport handle leaks inside FW.
4702 * The exception is when LOGO is done while another PLOGI with
4703 * the same nport handle is waiting as might be the case here.
4704 * Note: there is always a possibily of a race where session
4705 * deletion has already started for other reasons (e.g. ACL
4706 * removal) and now PLOGI arrives:
4707 * 1. if PLOGI arrived in FW after nport handle has been freed,
4708 * FW must have assigned this PLOGI a new/same handle and we
4709 * can proceed ACK'ing it as usual when session deletion
4710 * completes.
4711 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4712 * bit reached it, the handle has now been released. We'll
4713 * get an error when we ACK this PLOGI. Nothing will be sent
4714 * back to initiator. Initiator should eventually retry
4715 * PLOGI and situation will correct itself.
4716 */
4717 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4718 (sess->d_id.b24 == port_id.b24));
4719
4720 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4721 "%s %d %8phC post del sess\n",
4722 __func__, __LINE__, sess->port_name);
4723
4724
d8630bb9 4725 qlt_schedule_sess_for_deletion(sess);
9cd883f0
QT		 4726 break;
4727 }
4728out:
4729 return res;
4730}
4731
2d70c103
NB		 4732/*
4733 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4734 */
4735static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4736 struct imm_ntfy_from_isp *iocb)
4737{
a6ca8878 4738 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4739 struct qla_hw_data *ha = vha->hw;
5d964837 4740 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4741 uint64_t wwn;
4742 port_id_t port_id;
4743 uint16_t loop_id;
4744 uint16_t wd3_lo;
2d70c103 4745 int res = 0;
9cd883f0 4746 unsigned long flags;
2d70c103 4747
a6ca8878
AP		 4748 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4749
4750 port_id.b.domain = iocb->u.isp24.port_id[2];
4751 port_id.b.area = iocb->u.isp24.port_id[1];
4752 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4753 port_id.b.rsvd_1 = 0;
4754
4755 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4756
726b8548
QT		 4757 ql_dbg(ql_dbg_disc, vha, 0xf026,
4758 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4759 vha->vp_idx, iocb->u.isp24.port_id[2],
4760 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4761 iocb->u.isp24.status_subcode, loop_id,
4762 iocb->u.isp24.port_name);
2d70c103 4763
a6ca8878
AP		 4764 /* res = 1 means ack at the end of thread
4765 * res = 0 means ack async/later.
4766 */
2d70c103
NB		 4767 switch (iocb->u.isp24.status_subcode) {
4768 case ELS_PLOGI:
9cd883f0
QT		 4769 res = qlt_handle_login(vha, iocb);
4770 break;
a6ca8878 4771
9cd883f0
QT		 4772 case ELS_PRLI:
4773 if (N2N_TOPO(ha)) {
4774 sess = qla2x00_find_fcport_by_wwpn(vha,
4775 iocb->u.isp24.port_name, 1);
726b8548 4776
9cd883f0
QT		 4777 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4778 ql_dbg(ql_dbg_disc, vha, 0xffff,
4779 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4780 __func__, __LINE__,
4781 iocb->u.isp24.port_name);
4782 qlt_send_term_imm_notif(vha, iocb, 1);
4783 break;
4784 }
726b8548 4785
9cd883f0 4786 res = qlt_handle_login(vha, iocb);
726b8548
QT		 4787 break;
4788 }
4789
a4239945
QT		 4790 if (IS_SW_RESV_ADDR(port_id)) {
4791 res = 1;
4792 break;
4793 }
4794
a6ca8878
AP		 4795 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4796
7560151b
QT		 4797 if (wwn) {
4798 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4799 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4800 loop_id, &conflict_sess);
7560151b
QT		 4801 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4802 }
b7bd104e
AP		 4803
4804 if (conflict_sess) {
5ef696aa
QT		 4805 switch (conflict_sess->disc_state) {
4806 case DSC_DELETED:
4807 case DSC_DELETE_PEND:
4808 break;
4809 default:
4810 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4811 "PRLI with conflicting sess %p port %8phC\n",
4812 conflict_sess, conflict_sess->port_name);
4813 conflict_sess->fw_login_state =
4814 DSC_LS_PORT_UNAVAIL;
4815 qlt_send_term_imm_notif(vha, iocb, 1);
4816 res = 0;
4817 break;
4818 }
b7bd104e 4819 }
a6ca8878
AP		 4820
4821 if (sess != NULL) {
a4239945 4822 bool delete = false;
82abdcaf
QT		 4823 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4824 switch (sess->fw_login_state) {
a4239945 4825 case DSC_LS_PLOGI_PEND:
82abdcaf
QT		 4826 case DSC_LS_PLOGI_COMP:
4827 case DSC_LS_PRLI_COMP:
4828 break;
4829 default:
a4239945
QT		 4830 delete = true;
4831 break;
4832 }
4833
4834 switch (sess->disc_state) {
4835 case DSC_LOGIN_PEND:
4836 case DSC_GPDB:
4837 case DSC_GPSC:
4838 case DSC_UPD_FCPORT:
4839 case DSC_LOGIN_COMPLETE:
4840 case DSC_ADISC:
4841 delete = false;
4842 break;
4843 default:
4844 break;
4845 }
4846
4847 if (delete) {
82abdcaf
QT		 4848 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4849 flags);
a6ca8878
AP		 4850 /*
4851 * Impatient initiator sent PRLI before last
4852 * PLOGI could finish. Will force him to re-try,
4853 * while last one finishes.
4854 */
df673274 4855 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4856 "sess %p PRLI received, before plogi ack.\n",
4857 sess);
4858 qlt_send_term_imm_notif(vha, iocb, 1);
4859 res = 0;
82abdcaf
QT		 4860 spin_lock_irqsave(&tgt->ha->tgt.sess_lock,
4861 flags);
a6ca8878
AP		 4862 break;
4863 }
4864
4865 /*
4866 * This shouldn't happen under normal circumstances,
4867 * since we have deleted the old session during PLOGI
4868 */
df673274 4869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4870 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4871 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4872
4873 sess->local = 0;
4874 sess->loop_id = loop_id;
37cacc0a 4875 sess->d_id = port_id;
726b8548 4876 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4877
4878 if (wd3_lo & BIT_7)
4879 sess->conf_compl_supported = 1;
4880
726b8548
QT		 4881 if ((wd3_lo & BIT_4) == 0)
4882 sess->port_type = FCT_INITIATOR;
4883 else
4884 sess->port_type = FCT_TARGET;
82abdcaf
QT		 4885
4886 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
df673274
AP		 4887 }
4888 res = 1; /* send notify ack */
4889
4890 /* Make session global (not used in fabric mode) */
4891 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4892 if (sess) {
83548fe2 4893 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4894 "%s %d %8phC post nack\n",
4895 __func__, __LINE__, sess->port_name);
4896 qla24xx_post_nack_work(vha, sess, iocb,
4897 SRB_NACK_PRLI);
4898 res = 0;
4899 } else {
4900 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4901 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4902 qla2xxx_wake_dpc(vha);
4903 }
a6ca8878 4904 } else {
726b8548 4905 if (sess) {
83548fe2 4906 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4907 "%s %d %8phC post nack\n",
4908 __func__, __LINE__, sess->port_name);
726b8548
QT		 4909 qla24xx_post_nack_work(vha, sess, iocb,
4910 SRB_NACK_PRLI);
4911 res = 0;
4912 }
4913 }
a6ca8878
AP		 4914 break;
4915
41dc529a
QT		 4916 case ELS_TPRLO:
4917 if (le16_to_cpu(iocb->u.isp24.flags) &
4918 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4919 loop_id = 0xFFFF;
4920 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4921 res = 1;
4922 break;
4923 }
81881861 4924 /* fall through */
2d70c103
NB		 4925 case ELS_LOGO:
4926 case ELS_PRLO:
726b8548
QT		 4927 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4928 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4929 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4930
4931 if (sess) {
4932 sess->login_gen++;
4933 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4934 sess->logo_ack_needed = 1;
4935 memcpy(sess->iocb, iocb, IOCB_SIZE);
4936 }
4937
2d70c103 4938 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4939
83548fe2 4940 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4941 "%s: logo %llx res %d sess %p ",
4942 __func__, wwn, res, sess);
4943 if (res == 0) {
41dc529a
QT		 4944 /*
4945 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4946 * for LOGO_ACK & sess delete
4947 */
726b8548
QT		 4948 BUG_ON(!sess);
4949 res = 0;
4950 } else {
41dc529a 4951 /* cmd did not go to upper layer. */
726b8548 4952 if (sess) {
d8630bb9 4953 qlt_schedule_sess_for_deletion(sess);
726b8548
QT		 4954 res = 0;
4955 }
4956 /* else logo will be ack */
4957 }
2d70c103
NB		 4958 break;
4959 case ELS_PDISC:
4960 case ELS_ADISC:
4961 {
0e8cd71c 4962 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4963 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 4964 qlt_send_notify_ack(ha->base_qpair,
4965 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 4966 tgt->link_reinit_iocb_pending = 0;
4967 }
726b8548
QT		 4968
4969 sess = qla2x00_find_fcport_by_wwpn(vha,
4970 iocb->u.isp24.port_name, 1);
4971 if (sess) {
83548fe2 4972 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4973 "sess %p lid %d|%d DS %d LS %d\n",
4974 sess, sess->loop_id, loop_id,
4975 sess->disc_state, sess->fw_login_state);
4976 }
4977
2d70c103
NB		 4978 res = 1; /* send notify ack */
4979 break;
4980 }
4981
a6ca8878 4982 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4983 default:
4984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4985 "qla_target(%d): Unsupported ELS command %x "
4986 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4987 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4988 break;
4989 }
4990
9cd883f0
QT		 4991 ql_dbg(ql_dbg_disc, vha, 0xf026,
4992 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
4993 vha->vp_idx, iocb->u.isp24.status_subcode, res);
4994
2d70c103
NB		 4995 return res;
4996}
4997
2d70c103
NB		 4998/*
4999 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5000 */
5001static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5002 struct imm_ntfy_from_isp *iocb)
5003{
5004 struct qla_hw_data *ha = vha->hw;
5005 uint32_t add_flags = 0;
5006 int send_notify_ack = 1;
5007 uint16_t status;
5008
5009 status = le16_to_cpu(iocb->u.isp2x.status);
5010 switch (status) {
5011 case IMM_NTFY_LIP_RESET:
5012 {
5013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5014 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5015 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5016 iocb->u.isp24.status_subcode);
5017
5018 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5019 send_notify_ack = 0;
5020 break;
5021 }
5022
5023 case IMM_NTFY_LIP_LINK_REINIT:
5024 {
0e8cd71c 5025 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5026 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5027 "qla_target(%d): LINK REINIT (loop %#x, "
5028 "subcode %x)\n", vha->vp_idx,
5029 le16_to_cpu(iocb->u.isp24.nport_handle),
5030 iocb->u.isp24.status_subcode);
5031 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5032 qlt_send_notify_ack(ha->base_qpair,
5033 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5034 }
5035 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5036 tgt->link_reinit_iocb_pending = 1;
5037 /*
5038 * QLogic requires to wait after LINK REINIT for possible
5039 * PDISC or ADISC ELS commands
5040 */
5041 send_notify_ack = 0;
5042 break;
5043 }
5044
5045 case IMM_NTFY_PORT_LOGOUT:
5046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5047 "qla_target(%d): Port logout (loop "
5048 "%#x, subcode %x)\n", vha->vp_idx,
5049 le16_to_cpu(iocb->u.isp24.nport_handle),
5050 iocb->u.isp24.status_subcode);
5051
5052 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5053 send_notify_ack = 0;
5054 /* The sessions will be cleared in the callback, if needed */
5055 break;
5056
5057 case IMM_NTFY_GLBL_TPRLO:
5058 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5059 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5060 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5061 send_notify_ack = 0;
5062 /* The sessions will be cleared in the callback, if needed */
5063 break;
5064
5065 case IMM_NTFY_PORT_CONFIG:
5066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5067 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5068 status);
5069 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5070 send_notify_ack = 0;
5071 /* The sessions will be cleared in the callback, if needed */
5072 break;
5073
5074 case IMM_NTFY_GLBL_LOGO:
5075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5076 "qla_target(%d): Link failure detected\n",
5077 vha->vp_idx);
5078 /* I_T nexus loss */
5079 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5080 send_notify_ack = 0;
5081 break;
5082
5083 case IMM_NTFY_IOCB_OVERFLOW:
5084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5085 "qla_target(%d): Cannot provide requested "
5086 "capability (IOCB overflowed the immediate notify "
5087 "resource count)\n", vha->vp_idx);
5088 break;
5089
5090 case IMM_NTFY_ABORT_TASK:
5091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5092 "qla_target(%d): Abort Task (S %08x I %#x -> "
5093 "L %#x)\n", vha->vp_idx,
5094 le16_to_cpu(iocb->u.isp2x.seq_id),
5095 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5096 le16_to_cpu(iocb->u.isp2x.lun));
5097 if (qlt_abort_task(vha, iocb) == 0)
5098 send_notify_ack = 0;
5099 break;
5100
5101 case IMM_NTFY_RESOURCE:
5102 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5103 "qla_target(%d): Out of resources, host %ld\n",
5104 vha->vp_idx, vha->host_no);
5105 break;
5106
5107 case IMM_NTFY_MSG_RX:
5108 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5109 "qla_target(%d): Immediate notify task %x\n",
5110 vha->vp_idx, iocb->u.isp2x.task_flags);
5111 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5112 send_notify_ack = 0;
5113 break;
5114
5115 case IMM_NTFY_ELS:
5116 if (qlt_24xx_handle_els(vha, iocb) == 0)
5117 send_notify_ack = 0;
5118 break;
2d70c103
NB		 5119 default:
5120 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5121 "qla_target(%d): Received unknown immediate "
5122 "notify status %x\n", vha->vp_idx, status);
5123 break;
5124 }
5125
5126 if (send_notify_ack)
82de802a
QT		 5127 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5128 0, 0);
2d70c103
NB		 5129}
5130
5131/*
5132 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5133 * This function sends busy to ISP 2xxx or 24xx.
5134 */
82de802a 5135static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5136 struct atio_from_isp *atio, uint16_t status)
5137{
82de802a 5138 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5139 struct ctio7_to_24xx *ctio24;
5140 struct qla_hw_data *ha = vha->hw;
5141 request_t *pkt;
5d964837 5142 struct fc_port *sess = NULL;
7560151b 5143 unsigned long flags;
f7e761f5 5144 u16 temp;
2d70c103 5145
7560151b 5146 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5147 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5148 atio->u.isp24.fcp_hdr.s_id);
7560151b 5149 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5150 if (!sess) {
82de802a 5151 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5152 return 0;
2d70c103
NB		 5153 }
5154 /* Sending marker isn't necessary, since we called from ISR */
5155
82de802a 5156 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5157 if (!pkt) {
667024a3 5158 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5159 "qla_target(%d): %s failed: unable to allocate "
5160 "request packet", vha->vp_idx, __func__);
33e79977 5161 return -ENOMEM;
2d70c103
NB		 5162 }
5163
60a9eadb 5164 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5165 pkt->entry_count = 1;
5166 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5167
5168 ctio24 = (struct ctio7_to_24xx *)pkt;
5169 ctio24->entry_type = CTIO_TYPE7;
5170 ctio24->nport_handle = sess->loop_id;
ad950360 5171 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5172 ctio24->vp_index = vha->vp_idx;
5173 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5174 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5175 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5176 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5177 temp = (atio->u.isp24.attr << 9) |
2d70c103 5178 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5179 CTIO7_FLAGS_DONT_RET_CTIO;
5180 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5181 /*
5182 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5183 * if the explicit conformation is used.
5184 */
5185 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5186 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5187 /* Memory Barrier */
5188 wmb();
8abfa9e2
QT		 5189 if (qpair->reqq_start_iocbs)
5190 qpair->reqq_start_iocbs(qpair);
5191 else
5192 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5193 return 0;
5194}
5195
5196/*
5197 * This routine is used to allocate a command for either a QFull condition
5198 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5199 * out previously.
5200 */
5201static void
5202qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5203 struct atio_from_isp *atio, uint16_t status, int qfull)
5204{
5205 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5206 struct qla_hw_data *ha = vha->hw;
5d964837 5207 struct fc_port *sess;
33e79977
QT		 5208 struct se_session *se_sess;
5209 struct qla_tgt_cmd *cmd;
5210 int tag;
82de802a 5211 unsigned long flags;
33e79977
QT		 5212
5213 if (unlikely(tgt->tgt_stop)) {
5214 ql_dbg(ql_dbg_io, vha, 0x300a,
5215 "New command while device %p is shutting down\n", tgt);
5216 return;
5217 }
5218
5219 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5220 vha->hw->tgt.num_qfull_cmds_dropped++;
5221 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5222 vha->qla_stats.stat_max_qfull_cmds_dropped)
5223 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5224 vha->hw->tgt.num_qfull_cmds_dropped;
5225
5226 ql_dbg(ql_dbg_io, vha, 0x3068,
5227 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5228 vha->vp_idx, __func__,
5229 vha->hw->tgt.num_qfull_cmds_dropped);
5230
5231 qlt_chk_exch_leak_thresh_hold(vha);
5232 return;
5233 }
5234
5235 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5236 (vha, atio->u.isp24.fcp_hdr.s_id);
5237 if (!sess)
5238 return;
5239
5240 se_sess = sess->se_sess;
5241
5242 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5243 if (tag < 0)
5244 return;
5245
5246 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5247 if (!cmd) {
5248 ql_dbg(ql_dbg_io, vha, 0x3009,
5249 "qla_target(%d): %s: Allocation of cmd failed\n",
5250 vha->vp_idx, __func__);
5251
5252 vha->hw->tgt.num_qfull_cmds_dropped++;
5253 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5254 vha->qla_stats.stat_max_qfull_cmds_dropped)
5255 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5256 vha->hw->tgt.num_qfull_cmds_dropped;
5257
5258 qlt_chk_exch_leak_thresh_hold(vha);
5259 return;
5260 }
5261
5262 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5263
5264 qlt_incr_num_pend_cmds(vha);
5265 INIT_LIST_HEAD(&cmd->cmd_list);
5266 memcpy(&cmd->atio, atio, sizeof(*atio));
5267
5268 cmd->tgt = vha->vha_tgt.qla_tgt;
5269 cmd->vha = vha;
7c3f8fd1 5270 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5271 cmd->q_full = 1;
82de802a 5272 cmd->qpair = ha->base_qpair;
33e79977
QT		 5273
5274 if (qfull) {
5275 cmd->q_full = 1;
5276 /* NOTE: borrowing the state field to carry the status */
5277 cmd->state = status;
5278 } else
5279 cmd->term_exchg = 1;
5280
82de802a 5281 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5282 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5283
5284 vha->hw->tgt.num_qfull_cmds_alloc++;
5285 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5286 vha->qla_stats.stat_max_qfull_cmds_alloc)
5287 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5288 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5289 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5290}
5291
5292int
82de802a 5293qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5294{
82de802a 5295 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5296 struct qla_hw_data *ha = vha->hw;
5297 unsigned long flags;
5298 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5299 struct list_head free_list, q_full_list;
33e79977
QT		 5300 int rc = 0;
5301
5302 if (list_empty(&ha->tgt.q_full_list))
5303 return 0;
5304
5305 INIT_LIST_HEAD(&free_list);
82de802a 5306 INIT_LIST_HEAD(&q_full_list);
33e79977 5307
82de802a 5308 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5309 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5310 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5311 return 0;
5312 }
5313
82de802a
QT		 5314 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5315 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5316
5317 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5318 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5319 if (cmd->q_full)
5320 /* cmd->state is a borrowed field to hold status */
82de802a 5321 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5322 else if (cmd->term_exchg)
82de802a 5323 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5324
5325 if (rc == -ENOMEM)
5326 break;
5327
5328 if (cmd->q_full)
5329 ql_dbg(ql_dbg_io, vha, 0x3006,
5330 "%s: busy sent for ox_id[%04x]\n", __func__,
5331 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5332 else if (cmd->term_exchg)
5333 ql_dbg(ql_dbg_io, vha, 0x3007,
5334 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5335 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5336 else
5337 ql_dbg(ql_dbg_io, vha, 0x3008,
5338 "%s: Unexpected cmd in QFull list %p\n", __func__,
5339 cmd);
5340
5341 list_del(&cmd->cmd_list);
5342 list_add_tail(&cmd->cmd_list, &free_list);
5343
5344 /* piggy back on hardware_lock for protection */
5345 vha->hw->tgt.num_qfull_cmds_alloc--;
5346 }
82de802a 5347 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5348
5349 cmd = NULL;
5350
5351 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5352 list_del(&cmd->cmd_list);
5353 /* This cmd was never sent to TCM. There is no need
5354 * to schedule free or call free_cmd
5355 */
5356 qlt_free_cmd(cmd);
5357 }
82de802a
QT		 5358
5359 if (!list_empty(&q_full_list)) {
5360 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5361 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5362 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5363 }
5364
33e79977
QT		 5365 return rc;
5366}
5367
5368static void
82de802a
QT		 5369qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5370 uint16_t status)
33e79977
QT		 5371{
5372 int rc = 0;
82de802a 5373 struct scsi_qla_host *vha = qpair->vha;
33e79977 5374
82de802a 5375 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5376 if (rc == -ENOMEM)
5377 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5378}
5379
5380static int
82de802a
QT		 5381qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5382 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5383{
5384 struct qla_hw_data *ha = vha->hw;
8b666809 5385 unsigned long flags;
33e79977
QT		 5386
5387 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5388 return 0;
5389
8b666809
QT		 5390 if (!ha_locked)
5391 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5392 qlt_send_busy(qpair, atio, qla_sam_status);
8b666809
QT		 5393 if (!ha_locked)
5394 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5395
33e79977 5396 return 1;
2d70c103
NB		 5397}
5398
5399/* ha->hardware_lock supposed to be held on entry */
5400/* called via callback from qla2xxx */
5401static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5402 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5403{
5404 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5405 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5406 int rc;
7cf95f7e 5407 unsigned long flags = 0;
2d70c103
NB		 5408
5409 if (unlikely(tgt == NULL)) {
ec7193e2 5410 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5411 "ATIO pkt, but no tgt (ha %p)", ha);
5412 return;
5413 }
2d70c103
NB		 5414 /*
5415 * In tgt_stop mode we also should allow all requests to pass.
5416 * Otherwise, some commands can stuck.
5417 */
5418
2f424b9b 5419 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5420
5421 switch (atio->u.raw.entry_type) {
5422 case ATIO_TYPE7:
2d70c103
NB		 5423 if (unlikely(atio->u.isp24.exchange_addr ==
5424 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5425 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5426 "qla_target(%d): ATIO_TYPE7 "
5427 "received with UNKNOWN exchange address, "
5428 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5429 if (!ha_locked)
5430 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5431 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
2f424b9b 5432 if (!ha_locked)
82de802a
QT		 5433 spin_unlock_irqrestore(&ha->hardware_lock,
5434 flags);
2d70c103
NB		 5435 break;
5436 }
33e79977 5437
33e79977 5438 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5439 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5440 atio, ha_locked);
33e79977 5441 if (rc != 0) {
2f424b9b 5442 tgt->atio_irq_cmd_count--;
33e79977
QT		 5443 return;
5444 }
2d70c103 5445 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5446 } else {
2d70c103 5447 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5448 }
2d70c103 5449 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5450 if (!ha_locked)
5451 spin_lock_irqsave(&ha->hardware_lock, flags);
5452 switch (rc) {
5453 case -ENODEV:
5454 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5455 "qla_target: Unable to send command to target\n");
5456 break;
5457 case -EBADF:
5458 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5459 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
82de802a
QT		 5460 qlt_send_term_exchange(ha->base_qpair, NULL,
5461 atio, 1, 0);
7cf95f7e
QT		 5462 break;
5463 case -EBUSY:
5464 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5465 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5466 vha->vp_idx);
5467 qlt_send_busy(ha->base_qpair, atio,
5468 tc_sam_status);
5469 break;
5470 default:
5471 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5472 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5473 vha->vp_idx);
5474 qlt_send_busy(ha->base_qpair, atio,
5475 qla_sam_status);
5476 break;
2d70c103 5477 }
7cf95f7e
QT		 5478 if (!ha_locked)
5479 spin_unlock_irqrestore(&ha->hardware_lock,
5480 flags);
2d70c103
NB		 5481 }
5482 break;
5483
5484 case IMMED_NOTIFY_TYPE:
5485 {
5486 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5487 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5488 "qla_target(%d): Received ATIO packet %x "
5489 "with error status %x\n", vha->vp_idx,
5490 atio->u.raw.entry_type,
5491 atio->u.isp2x.entry_status);
5492 break;
5493 }
5494 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5495
5496 if (!ha_locked)
5497 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5498 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5499 if (!ha_locked)
5500 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5501 break;
5502 }
5503
5504 default:
5505 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5506 "qla_target(%d): Received unknown ATIO atio "
5507 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5508 break;
5509 }
5510
2f424b9b 5511 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5512}
5513
5514/* ha->hardware_lock supposed to be held on entry */
5515/* called via callback from qla2xxx */
82de802a
QT		 5516static void qlt_response_pkt(struct scsi_qla_host *vha,
5517 struct rsp_que *rsp, response_t *pkt)
2d70c103 5518{
0e8cd71c 5519 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5520
5521 if (unlikely(tgt == NULL)) {
5522 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5523 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5524 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5525 return;
5526 }
5527
2d70c103
NB		 5528 /*
5529 * In tgt_stop mode we also should allow all requests to pass.
5530 * Otherwise, some commands can stuck.
5531 */
5532
2d70c103 5533 switch (pkt->entry_type) {
f83adb61 5534 case CTIO_CRC2:
2d70c103
NB		 5535 case CTIO_TYPE7:
5536 {
5537 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
82de802a 5538 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5539 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5540 entry);
5541 break;
5542 }
5543
5544 case ACCEPT_TGT_IO_TYPE:
5545 {
5546 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5547 int rc;
2d70c103 5548 if (atio->u.isp2x.status !=
ad950360 5549 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5550 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5551 "qla_target(%d): ATIO with error "
5552 "status %x received\n", vha->vp_idx,
5553 le16_to_cpu(atio->u.isp2x.status));
5554 break;
5555 }
2d70c103 5556
82de802a 5557 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5558 if (rc != 0)
33e79977 5559 return;
33e79977 5560
2d70c103
NB		 5561 rc = qlt_handle_cmd_for_atio(vha, atio);
5562 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5563 switch (rc) {
5564 case -ENODEV:
5565 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5566 "qla_target: Unable to send command to target\n");
5567 break;
5568 case -EBADF:
5569 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5570 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5571 qlt_send_term_exchange(rsp->qpair, NULL,
5572 atio, 1, 0);
5573 break;
5574 case -EBUSY:
5575 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5576 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5577 vha->vp_idx);
5578 qlt_send_busy(rsp->qpair, atio,
5579 tc_sam_status);
5580 break;
5581 default:
5582 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5583 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5584 vha->vp_idx);
5585 qlt_send_busy(rsp->qpair, atio,
5586 qla_sam_status);
5587 break;
2d70c103
NB		 5588 }
5589 }
5590 }
5591 break;
5592
5593 case CONTINUE_TGT_IO_TYPE:
5594 {
5595 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5596 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5597 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5598 entry);
5599 break;
5600 }
5601
5602 case CTIO_A64_TYPE:
5603 {
5604 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5605 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5606 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5607 entry);
5608 break;
5609 }
5610
5611 case IMMED_NOTIFY_TYPE:
5612 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5613 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5614 break;
5615
5616 case NOTIFY_ACK_TYPE:
5617 if (tgt->notify_ack_expected > 0) {
5618 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5619 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5620 "NOTIFY_ACK seq %08x status %x\n",
5621 le16_to_cpu(entry->u.isp2x.seq_id),
5622 le16_to_cpu(entry->u.isp2x.status));
5623 tgt->notify_ack_expected--;
5624 if (entry->u.isp2x.status !=
ad950360 5625 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5626 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5627 "qla_target(%d): NOTIFY_ACK "
5628 "failed %x\n", vha->vp_idx,
5629 le16_to_cpu(entry->u.isp2x.status));
5630 }
5631 } else {
5632 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5633 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5634 vha->vp_idx);
5635 }
5636 break;
5637
5638 case ABTS_RECV_24XX:
5639 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5640 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5641 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5642 break;
5643
5644 case ABTS_RESP_24XX:
5645 if (tgt->abts_resp_expected > 0) {
5646 struct abts_resp_from_24xx_fw *entry =
5647 (struct abts_resp_from_24xx_fw *)pkt;
5648 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5649 "ABTS_RESP_24XX: compl_status %x\n",
5650 entry->compl_status);
5651 tgt->abts_resp_expected--;
5652 if (le16_to_cpu(entry->compl_status) !=
5653 ABTS_RESP_COMPL_SUCCESS) {
5654 if ((entry->error_subcode1 == 0x1E) &&
5655 (entry->error_subcode2 == 0)) {
5656 /*
5657 * We've got a race here: aborted
5658 * exchange not terminated, i.e.
5659 * response for the aborted command was
5660 * sent between the abort request was
5661 * received and processed.
5662 * Unfortunately, the firmware has a
5663 * silly requirement that all aborted
5664 * exchanges must be explicitely
5665 * terminated, otherwise it refuses to
5666 * send responses for the abort
5667 * requests. So, we have to
5668 * (re)terminate the exchange and retry
5669 * the abort response.
5670 */
5671 qlt_24xx_retry_term_exchange(vha,
5672 entry);
5673 } else
5674 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5675 "qla_target(%d): ABTS_RESP_24XX "
5676 "failed %x (subcode %x:%x)",
5677 vha->vp_idx, entry->compl_status,
5678 entry->error_subcode1,
5679 entry->error_subcode2);
5680 }
5681 } else {
5682 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5683 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5684 "received\n", vha->vp_idx);
5685 }
5686 break;
5687
5688 default:
5689 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5690 "qla_target(%d): Received unknown response pkt "
5691 "type %x\n", vha->vp_idx, pkt->entry_type);
5692 break;
5693 }
5694
2d70c103
NB		 5695}
5696
5697/*
5698 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5699 */
5700void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5701 uint16_t *mailbox)
5702{
5703 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5704 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5705 int login_code;
2d70c103 5706
3a33dc95 5707 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5708 return;
5709
2d70c103
NB		 5710 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5711 IS_QLA2100(ha))
5712 return;
5713 /*
5714 * In tgt_stop mode we also should allow all requests to pass.
5715 * Otherwise, some commands can stuck.
5716 */
5717
2d70c103
NB		 5718
5719 switch (code) {
5720 case MBA_RESET: /* Reset */
5721 case MBA_SYSTEM_ERR: /* System Error */
5722 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5723 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5725 "qla_target(%d): System error async event %#x "
6efb3c0a 5726 "occurred", vha->vp_idx, code);
2d70c103
NB		 5727 break;
5728 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5729 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5730 break;
5731
5732 case MBA_LOOP_UP:
5733 {
5734 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5735 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5736 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5737 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5738 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5739 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5740 qlt_send_notify_ack(ha->base_qpair,
5741 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5742 0, 0, 0, 0, 0, 0);
5743 tgt->link_reinit_iocb_pending = 0;
5744 }
5745 break;
5746 }
5747
5748 case MBA_LIP_OCCURRED:
5749 case MBA_LOOP_DOWN:
5750 case MBA_LIP_RESET:
5751 case MBA_RSCN_UPDATE:
5752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5753 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5754 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5755 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5756 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5757 break;
5758
ead03855 5759 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5761 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5762 vha->vp_idx,
5763 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5764 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5765
5766 if (le16_to_cpu(mailbox[3]) == 1) {
5767 /* exchange starvation. */
5768 vha->hw->exch_starvation++;
5769 if (vha->hw->exch_starvation > 5) {
83548fe2 5770 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5771 "Exchange starvation-. Resetting RISC\n");
5772
5773 vha->hw->exch_starvation = 0;
5774 if (IS_P3P_TYPE(vha->hw))
5775 set_bit(FCOE_CTX_RESET_NEEDED,
5776 &vha->dpc_flags);
5777 else
5778 set_bit(ISP_ABORT_NEEDED,
5779 &vha->dpc_flags);
5780 qla2xxx_wake_dpc(vha);
5781 }
5782 }
5783 break;
5784
2d70c103
NB		 5785 case MBA_PORT_UPDATE:
5786 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5787 "qla_target(%d): Port update async event %#x "
6efb3c0a 5788 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5789 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5790 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5791 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5792
5793 login_code = le16_to_cpu(mailbox[2]);
ead03855 5794 if (login_code == 0x4) {
2d70c103
NB		 5795 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5796 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5797 vha->hw->exch_starvation = 0;
5798 } else if (login_code == 0x7)
2d70c103
NB		 5799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5800 "Async MB 2: Port Logged Out\n");
5801 break;
2d70c103 5802 default:
2d70c103
NB		 5803 break;
5804 }
5805
2d70c103
NB		 5806}
5807
5808static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5809 uint16_t loop_id)
5810{
726b8548 5811 fc_port_t *fcport, *tfcp, *del;
2d70c103 5812 int rc;
726b8548
QT		 5813 unsigned long flags;
5814 u8 newfcport = 0;
2d70c103 5815
063b36d6 5816 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 5817 if (!fcport) {
5818 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5819 "qla_target(%d): Allocation of tmp FC port failed",
5820 vha->vp_idx);
5821 return NULL;
5822 }
5823
2d70c103
NB		 5824 fcport->loop_id = loop_id;
5825
15f30a57 5826 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5827 if (rc != QLA_SUCCESS) {
5828 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5829 "qla_target(%d): Failed to retrieve fcport "
5830 "information -- get_port_database() returned %x "
5831 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5832 kfree(fcport);
5833 return NULL;
5834 }
5835
726b8548
QT		 5836 del = NULL;
5837 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5838 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5839
5840 if (tfcp) {
5841 tfcp->d_id = fcport->d_id;
5842 tfcp->port_type = fcport->port_type;
5843 tfcp->supported_classes = fcport->supported_classes;
5844 tfcp->flags |= fcport->flags;
76f9a2dd 5845 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 5846
5847 del = fcport;
5848 fcport = tfcp;
5849 } else {
5850 if (vha->hw->current_topology == ISP_CFG_F)
5851 fcport->flags |= FCF_FABRIC_DEVICE;
5852
5853 list_add_tail(&fcport->list, &vha->vp_fcports);
5854 if (!IS_SW_RESV_ADDR(fcport->d_id))
5855 vha->fcport_count++;
5856 fcport->login_gen++;
5857 fcport->disc_state = DSC_LOGIN_COMPLETE;
5858 fcport->login_succ = 1;
5859 newfcport = 1;
5860 }
5861
5862 fcport->deleted = 0;
5863 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5864
5865 switch (vha->host->active_mode) {
5866 case MODE_INITIATOR:
5867 case MODE_DUAL:
5868 if (newfcport) {
5869 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5870 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5871 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5872 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5873 qla24xx_post_upd_fcport_work(vha, fcport);
5874 } else {
83548fe2 5875 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5876 "%s %d %8phC post gpsc fcp_cnt %d\n",
5877 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5878 qla24xx_post_gpsc_work(vha, fcport);
5879 }
5880 }
5881 break;
5882
5883 case MODE_TARGET:
5884 default:
5885 break;
5886 }
5887 if (del)
5888 qla2x00_free_fcport(del);
5889
2d70c103
NB		 5890 return fcport;
5891}
5892
5893/* Must be called under tgt_mutex */
5d964837 5894static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5895 uint8_t *s_id)
5896{
5d964837 5897 struct fc_port *sess = NULL;
2d70c103
NB		 5898 fc_port_t *fcport = NULL;
5899 int rc, global_resets;
5900 uint16_t loop_id = 0;
5901
726b8548
QT		 5902 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5903 /*
5904 * This is Domain Controller, so it should be
5905 * OK to drop SCSI commands from it.
5906 */
5907 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5908 "Unable to find initiator with S_ID %x:%x:%x",
5909 s_id[0], s_id[1], s_id[2]);
5910 return NULL;
5911 }
5912
71cdc079
AP		 5913 mutex_lock(&vha->vha_tgt.tgt_mutex);
5914
2d70c103 5915retry:
0e8cd71c
SK		 5916 global_resets =
5917 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5918
5919 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5920 if (rc != 0) {
71cdc079
AP		 5921 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5922
726b8548
QT		 5923 ql_log(ql_log_info, vha, 0xf071,
5924 "qla_target(%d): Unable to find "
5925 "initiator with S_ID %x:%x:%x",
5926 vha->vp_idx, s_id[0], s_id[1],
5927 s_id[2]);
71cdc079
AP		 5928
5929 if (rc == -ENOENT) {
5930 qlt_port_logo_t logo;
5931 sid_to_portid(s_id, &logo.id);
5932 logo.cmd_count = 1;
5933 qlt_send_first_logo(vha, &logo);
5934 }
5935
2d70c103
NB		 5936 return NULL;
5937 }
5938
5939 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5940 if (!fcport) {
5941 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5942 return NULL;
71cdc079 5943 }
2d70c103
NB		 5944
5945 if (global_resets !=
0e8cd71c 5946 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5948 "qla_target(%d): global reset during session discovery "
5949 "(counter was %d, new %d), retrying", vha->vp_idx,
5950 global_resets,
0e8cd71c
SK		 5951 atomic_read(&vha->vha_tgt.
5952 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5953 goto retry;
5954 }
5955
5956 sess = qlt_create_sess(vha, fcport, true);
5957
71cdc079
AP		 5958 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5959
2d70c103
NB		 5960 return sess;
5961}
5962
5963static void qlt_abort_work(struct qla_tgt *tgt,
5964 struct qla_tgt_sess_work_param *prm)
5965{
5966 struct scsi_qla_host *vha = tgt->vha;
5967 struct qla_hw_data *ha = vha->hw;
5d964837 5968 struct fc_port *sess = NULL;
7560151b 5969 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5970 uint32_t be_s_id;
5971 uint8_t s_id[3];
5972 int rc;
5973
7560151b 5974 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5975
5976 if (tgt->tgt_stop)
7560151b 5977 goto out_term2;
2d70c103
NB		 5978
5979 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5980 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5981 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5982
5983 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5984 (unsigned char *)&be_s_id);
5985 if (!sess) {
7560151b 5986 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5987
2d70c103
NB		 5988 sess = qlt_make_local_sess(vha, s_id);
5989 /* sess has got an extra creation ref */
2d70c103 5990
7560151b 5991 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5992 if (!sess)
7560151b 5993 goto out_term2;
2d70c103 5994 } else {
726b8548 5995 if (sess->deleted) {
e52a8b45 5996 sess = NULL;
7560151b 5997 goto out_term2;
e52a8b45
AP		 5998 }
5999
726b8548 6000 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6001 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 6002 "%s: kref_get fail %8phC \n",
6003 __func__, sess->port_name);
6004 sess = NULL;
6005 goto out_term2;
6006 }
2d70c103
NB		 6007 }
6008
2d70c103 6009 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 6010 ha->tgt.tgt_ops->put_sess(sess);
6011 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6012
2d70c103
NB		 6013 if (rc != 0)
6014 goto out_term;
2d70c103
NB		 6015 return;
6016
7560151b 6017out_term2:
f159b3c7
QT		 6018 if (sess)
6019 ha->tgt.tgt_ops->put_sess(sess);
6020 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 6021
2d70c103 6022out_term:
f159b3c7 6023 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6024 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6025 FCP_TMF_REJECTED, false);
7560151b 6026 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6027}
6028
6029static void qlt_tmr_work(struct qla_tgt *tgt,
6030 struct qla_tgt_sess_work_param *prm)
6031{
6032 struct atio_from_isp *a = &prm->tm_iocb2;
6033 struct scsi_qla_host *vha = tgt->vha;
6034 struct qla_hw_data *ha = vha->hw;
5d964837 6035 struct fc_port *sess = NULL;
2d70c103
NB		 6036 unsigned long flags;
6037 uint8_t *s_id = NULL; /* to hide compiler warnings */
6038 int rc;
f775bd14 6039 u64 unpacked_lun;
52c82823 6040 int fn;
2d70c103
NB		 6041 void *iocb;
6042
7560151b 6043 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6044
6045 if (tgt->tgt_stop)
f159b3c7 6046 goto out_term2;
2d70c103
NB		 6047
6048 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6049 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6050 if (!sess) {
7560151b 6051 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6052
2d70c103
NB		 6053 sess = qlt_make_local_sess(vha, s_id);
6054 /* sess has got an extra creation ref */
2d70c103 6055
7560151b 6056 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6057 if (!sess)
f159b3c7 6058 goto out_term2;
2d70c103 6059 } else {
726b8548 6060 if (sess->deleted) {
e52a8b45 6061 sess = NULL;
f159b3c7 6062 goto out_term2;
e52a8b45
AP		 6063 }
6064
726b8548 6065 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6066 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6067 "%s: kref_get fail %8phC\n",
6068 __func__, sess->port_name);
6069 sess = NULL;
f159b3c7 6070 goto out_term2;
726b8548 6071 }
2d70c103
NB		 6072 }
6073
6074 iocb = a;
2d70c103 6075 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6076 unpacked_lun =
6077 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6078
6079 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 6080 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6081 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 6082
6083 if (rc != 0)
6084 goto out_term;
2d70c103
NB		 6085 return;
6086
f159b3c7
QT		 6087out_term2:
6088 if (sess)
6089 ha->tgt.tgt_ops->put_sess(sess);
6090 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6091out_term:
82de802a 6092 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6093}
6094
6095static void qlt_sess_work_fn(struct work_struct *work)
6096{
6097 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6098 struct scsi_qla_host *vha = tgt->vha;
6099 unsigned long flags;
6100
6101 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6102
6103 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6104 while (!list_empty(&tgt->sess_works_list)) {
6105 struct qla_tgt_sess_work_param *prm = list_entry(
6106 tgt->sess_works_list.next, typeof(*prm),
6107 sess_works_list_entry);
6108
6109 /*
6110 * This work can be scheduled on several CPUs at time, so we
6111 * must delete the entry to eliminate double processing
6112 */
6113 list_del(&prm->sess_works_list_entry);
6114
6115 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6116
6117 switch (prm->type) {
6118 case QLA_TGT_SESS_WORK_ABORT:
6119 qlt_abort_work(tgt, prm);
6120 break;
6121 case QLA_TGT_SESS_WORK_TM:
6122 qlt_tmr_work(tgt, prm);
6123 break;
6124 default:
6125 BUG_ON(1);
6126 break;
6127 }
6128
6129 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6130
6131 kfree(prm);
6132 }
6133 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6134}
6135
6136/* Must be called under tgt_host_action_mutex */
6137int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6138{
6139 struct qla_tgt *tgt;
e326d22a
QT		 6140 int rc, i;
6141 struct qla_qpair_hint *h;
2d70c103
NB		 6142
6143 if (!QLA_TGT_MODE_ENABLED())
6144 return 0;
6145
33c36c0a
AE		 6146 if (!IS_TGT_MODE_CAPABLE(ha)) {
6147 ql_log(ql_log_warn, base_vha, 0xe070,
6148 "This adapter does not support target mode.\n");
6149 return 0;
6150 }
6151
2d70c103 6152 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6153 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6154
0e8cd71c 6155 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6156
6157 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6158 if (!tgt) {
6159 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6160 "Unable to allocate struct qla_tgt\n");
6161 return -ENOMEM;
6162 }
6163
e326d22a
QT		 6164 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6165 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6166 if (!tgt->qphints) {
6167 kfree(tgt);
6168 ql_log(ql_log_warn, base_vha, 0x0197,
6169 "Unable to allocate qpair hints.\n");
6170 return -ENOMEM;
6171 }
6172
2d70c103
NB		 6173 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6174 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6175
e326d22a
QT		 6176 rc = btree_init64(&tgt->lun_qpair_map);
6177 if (rc) {
6178 kfree(tgt->qphints);
6179 kfree(tgt);
6180 ql_log(ql_log_info, base_vha, 0x0198,
6181 "Unable to initialize lun_qpair_map btree\n");
6182 return -EIO;
6183 }
6184 h = &tgt->qphints[0];
6185 h->qpair = ha->base_qpair;
6186 INIT_LIST_HEAD(&h->hint_elem);
6187 h->cpuid = ha->base_qpair->cpuid;
6188 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6189
6190 for (i = 0; i < ha->max_qpairs; i++) {
6191 unsigned long flags;
6192
6193 struct qla_qpair *qpair = ha->queue_pair_map[i];
6194 h = &tgt->qphints[i + 1];
6195 INIT_LIST_HEAD(&h->hint_elem);
6196 if (qpair) {
6197 h->qpair = qpair;
6198 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6199 list_add_tail(&h->hint_elem, &qpair->hints_list);
6200 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6201 h->cpuid = qpair->cpuid;
6202 }
6203 }
6204
2d70c103
NB		 6205 tgt->ha = ha;
6206 tgt->vha = base_vha;
6207 init_waitqueue_head(&tgt->waitQ);
2d70c103 6208 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6209 spin_lock_init(&tgt->sess_work_lock);
6210 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6211 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6212 atomic_set(&tgt->tgt_global_resets_count, 0);
6213
0e8cd71c 6214 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6215
6216 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6217 "qla_target(%d): using 64 Bit PCI addressing",
6218 base_vha->vp_idx);
2d70c103
NB		 6219 /* 3 is reserved */
6220 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6221
6222 mutex_lock(&qla_tgt_mutex);
6223 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6224 mutex_unlock(&qla_tgt_mutex);
6225
f1443eeb
QT		 6226 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6227 ha->tgt.tgt_ops->add_target(base_vha);
6228
2d70c103
NB		 6229 return 0;
6230}
6231
6232/* Must be called under tgt_host_action_mutex */
6233int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6234{
0e8cd71c 6235 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6236 return 0;
6237
ddb95145
NB		 6238 if (vha->fc_vport) {
6239 qlt_release(vha->vha_tgt.qla_tgt);
6240 return 0;
6241 }
33e79977
QT		 6242
6243 /* free left over qfull cmds */
6244 qlt_init_term_exchange(vha);
6245
2d70c103
NB		 6246 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6247 vha->host_no, ha);
0e8cd71c 6248 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6249
6250 return 0;
6251}
6252
482c9dc7
QT		 6253void qlt_remove_target_resources(struct qla_hw_data *ha)
6254{
6255 struct scsi_qla_host *node;
6256 u32 key = 0;
6257
6258 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6259 btree_remove32(&ha->tgt.host_map, key);
6260
6261 btree_destroy32(&ha->tgt.host_map);
6262}
6263
2d70c103
NB		 6264static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6265 unsigned char *b)
6266{
6267 int i;
6268
6269 pr_debug("qla2xxx HW vha->node_name: ");
6270 for (i = 0; i < WWN_SIZE; i++)
6271 pr_debug("%02x ", vha->node_name[i]);
6272 pr_debug("\n");
6273 pr_debug("qla2xxx HW vha->port_name: ");
6274 for (i = 0; i < WWN_SIZE; i++)
6275 pr_debug("%02x ", vha->port_name[i]);
6276 pr_debug("\n");
6277
6278 pr_debug("qla2xxx passed configfs WWPN: ");
6279 put_unaligned_be64(wwpn, b);
6280 for (i = 0; i < WWN_SIZE; i++)
6281 pr_debug("%02x ", b[i]);
6282 pr_debug("\n");
6283}
6284
6285/**
6286 * qla_tgt_lport_register - register lport with external module
6287 *
6288 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6289 * @wwpn: Passwd FC target WWPN
6290 * @callback: lport initialization callback for tcm_qla2xxx code
6291 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6292 */
49a47f2c
NB		 6293int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6294 u64 npiv_wwpn, u64 npiv_wwnn,
6295 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6296{
6297 struct qla_tgt *tgt;
6298 struct scsi_qla_host *vha;
6299 struct qla_hw_data *ha;
6300 struct Scsi_Host *host;
6301 unsigned long flags;
6302 int rc;
6303 u8 b[WWN_SIZE];
6304
6305 mutex_lock(&qla_tgt_mutex);
6306 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6307 vha = tgt->vha;
6308 ha = vha->hw;
6309
6310 host = vha->host;
6311 if (!host)
6312 continue;
6313
2d70c103
NB		 6314 if (!(host->hostt->supported_mode & MODE_TARGET))
6315 continue;
6316
6317 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6318 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6319 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6320 host->host_no);
6321 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6322 continue;
6323 }
ddb95145
NB		 6324 if (tgt->tgt_stop) {
6325 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6326 host->host_no);
6327 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6328 continue;
6329 }
2d70c103
NB		 6330 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6331
6332 if (!scsi_host_get(host)) {
6333 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6334 "Unable to scsi_host_get() for"
6335 " qla2xxx scsi_host\n");
6336 continue;
6337 }
49a47f2c 6338 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6339
6340 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6341 scsi_host_put(host);
6342 continue;
6343 }
49a47f2c
NB		 6344 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6345 if (rc != 0)
6346 scsi_host_put(host);
6347
ddb95145 6348 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6349 return rc;
6350 }
6351 mutex_unlock(&qla_tgt_mutex);
6352
6353 return -ENODEV;
6354}
6355EXPORT_SYMBOL(qlt_lport_register);
6356
6357/**
6358 * qla_tgt_lport_deregister - Degister lport
6359 *
6360 * @vha: Registered scsi_qla_host pointer
6361 */
6362void qlt_lport_deregister(struct scsi_qla_host *vha)
6363{
6364 struct qla_hw_data *ha = vha->hw;
6365 struct Scsi_Host *sh = vha->host;
6366 /*
6367 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6368 */
0e8cd71c 6369 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6370 ha->tgt.tgt_ops = NULL;
6371 /*
6372 * Release the Scsi_Host reference for the underlying qla2xxx host
6373 */
6374 scsi_host_put(sh);
6375}
6376EXPORT_SYMBOL(qlt_lport_deregister);
6377
6378/* Must be called under HW lock */
55a9066f 6379static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6380{
2d70c103
NB		 6381 switch (ql2x_ini_mode) {
6382 case QLA2XXX_INI_MODE_DISABLED:
6383 case QLA2XXX_INI_MODE_EXCLUSIVE:
6384 vha->host->active_mode = MODE_TARGET;
6385 break;
6386 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6387 vha->host->active_mode = MODE_UNKNOWN;
6388 break;
6389 case QLA2XXX_INI_MODE_DUAL:
6390 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6391 break;
6392 default:
6393 break;
6394 }
2d70c103
NB		 6395}
6396
6397/* Must be called under HW lock */
55a9066f 6398static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6399{
2d70c103
NB		 6400 switch (ql2x_ini_mode) {
6401 case QLA2XXX_INI_MODE_DISABLED:
6402 vha->host->active_mode = MODE_UNKNOWN;
6403 break;
6404 case QLA2XXX_INI_MODE_EXCLUSIVE:
6405 vha->host->active_mode = MODE_INITIATOR;
6406 break;
6407 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6408 case QLA2XXX_INI_MODE_DUAL:
6409 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6410 break;
6411 default:
6412 break;
6413 }
2d70c103
NB		 6414}
6415
6416/*
6417 * qla_tgt_enable_vha - NO LOCK HELD
6418 *
6419 * host_reset, bring up w/ Target Mode Enabled
6420 */
6421void
6422qlt_enable_vha(struct scsi_qla_host *vha)
6423{
6424 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6425 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6426 unsigned long flags;
0e8cd71c 6427 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6428
6429 if (!tgt) {
6430 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6431 "Unable to locate qla_tgt pointer from"
6432 " struct qla_hw_data\n");
6433 dump_stack();
6434 return;
6435 }
6436
6437 spin_lock_irqsave(&ha->hardware_lock, flags);
6438 tgt->tgt_stopped = 0;
6439 qlt_set_mode(vha);
6440 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6441
0e8cd71c
SK		 6442 if (vha->vp_idx) {
6443 qla24xx_disable_vp(vha);
6444 qla24xx_enable_vp(vha);
6445 } else {
6446 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6447 qla2xxx_wake_dpc(base_vha);
6448 qla2x00_wait_for_hba_online(base_vha);
6449 }
2d70c103
NB		 6450}
6451EXPORT_SYMBOL(qlt_enable_vha);
6452
6453/*
6454 * qla_tgt_disable_vha - NO LOCK HELD
6455 *
6456 * Disable Target Mode and reset the adapter
6457 */
55a9066f 6458static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6459{
6460 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6461 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6462 unsigned long flags;
6463
6464 if (!tgt) {
6465 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6466 "Unable to locate qla_tgt pointer from"
6467 " struct qla_hw_data\n");
6468 dump_stack();
6469 return;
6470 }
6471
6472 spin_lock_irqsave(&ha->hardware_lock, flags);
6473 qlt_clear_mode(vha);
6474 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6475
6476 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6477 qla2xxx_wake_dpc(vha);
6478 qla2x00_wait_for_hba_online(vha);
6479}
6480
6481/*
6482 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6483 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6484 * members.
6485 */
6486void
6487qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6488{
0e8cd71c
SK		 6489 vha->vha_tgt.qla_tgt = NULL;
6490
6491 mutex_init(&vha->vha_tgt.tgt_mutex);
6492 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6493
6494 qlt_clear_mode(vha);
6495
6496 /*
6497 * NOTE: Currently the value is kept the same for <24xx and
6498 * >=24xx ISPs. If it is necessary to change it,
6499 * the check should be added for specific ISPs,
6500 * assigning the value appropriately.
6501 */
6502 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6503
6504 qlt_add_target(ha, vha);
2d70c103
NB		 6505}
6506
e374f9f5
QT		 6507u8
6508qlt_rff_id(struct scsi_qla_host *vha)
2d70c103 6509{
e374f9f5 6510 u8 fc4_feature = 0;
2d70c103
NB		 6511 /*
6512 * FC-4 Feature bit 0 indicates target functionality to the name server.
6513 */
6514 if (qla_tgt_mode_enabled(vha)) {
e374f9f5 6515 fc4_feature = BIT_0;
2d70c103 6516 } else if (qla_ini_mode_enabled(vha)) {
e374f9f5 6517 fc4_feature = BIT_1;
726b8548 6518 } else if (qla_dual_mode_enabled(vha))
e374f9f5
QT		 6519 fc4_feature = BIT_0 | BIT_1;
6520
6521 return fc4_feature;
2d70c103
NB		 6522}
6523
6524/*
6525 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6526 * @ha: HA context
6527 *
6528 * Beginning of ATIO ring has initialization control block already built
6529 * by nvram config routine.
6530 *
6531 * Returns 0 on success.
6532 */
6533void
6534qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6535{
6536 struct qla_hw_data *ha = vha->hw;
6537 uint16_t cnt;
6538 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6539
ead03855 6540 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6541 return;
6542
6543 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6544 pkt->u.raw.signature = ATIO_PROCESSED;
6545 pkt++;
6546 }
6547
6548}
6549
6550/*
6551 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6552 * @ha: SCSI driver HA context
6553 */
6554void
2f424b9b 6555qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6556{
6557 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6558 struct atio_from_isp *pkt;
6559 int cnt, i;
6560
ec7193e2 6561 if (!ha->flags.fw_started)
2d70c103
NB		 6562 return;
6563
5f35509d
QT		 6564 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6565 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6566 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6567 cnt = pkt->u.raw.entry_count;
6568
5f35509d
QT		 6569 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6570 /*
6571 * This packet is corrupted. The header + payload
6572 * can not be trusted. There is no point in passing
6573 * it further up.
6574 */
83548fe2 6575 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6576 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6577 pkt->u.isp24.fcp_hdr.s_id,
6578 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6579 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6580
6581 adjust_corrupted_atio(pkt);
82de802a
QT		 6582 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6583 ha_locked, 0);
5f35509d
QT		 6584 } else {
6585 qlt_24xx_atio_pkt_all_vps(vha,
6586 (struct atio_from_isp *)pkt, ha_locked);
6587 }
2d70c103
NB		 6588
6589 for (i = 0; i < cnt; i++) {
6590 ha->tgt.atio_ring_index++;
6591 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6592 ha->tgt.atio_ring_index = 0;
6593 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6594 } else
6595 ha->tgt.atio_ring_ptr++;
6596
6597 pkt->u.raw.signature = ATIO_PROCESSED;
6598 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6599 }
6600 wmb();
6601 }
6602
6603 /* Adjust ring index */
aa230bc5 6604 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6605}
6606
6607void
aa230bc5 6608qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6609{
6610 struct qla_hw_data *ha = vha->hw;
d2b292c3
QT		 6611 struct qla_msix_entry *msix = &ha->msix_entries[2];
6612 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6613
aa230bc5
AE		 6614 if (!QLA_TGT_MODE_ENABLED())
6615 return;
2d70c103 6616
aa230bc5
AE		 6617 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6618 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6619 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6620
d2b292c3
QT		 6621 if (ha->flags.msix_enabled) {
6622 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6623 if (IS_QLA2071(ha)) {
6624 /* 4 ports Baker: Enable Interrupt Handshake */
6625 icb->msix_atio = 0;
6626 icb->firmware_options_2 |= BIT_26;
6627 } else {
6628 icb->msix_atio = cpu_to_le16(msix->entry);
6629 icb->firmware_options_2 &= ~BIT_26;
6630 }
6631 ql_dbg(ql_dbg_init, vha, 0xf072,
6632 "Registering ICB vector 0x%x for atio que.\n",
6633 msix->entry);
6634 }
6635 } else {
6636 /* INTx|MSI */
6637 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6638 icb->msix_atio = 0;
6639 icb->firmware_options_2 |= BIT_26;
6640 ql_dbg(ql_dbg_init, vha, 0xf072,
6641 "%s: Use INTx for ATIOQ.\n", __func__);
6642 }
2d70c103
NB		 6643 }
6644}
6645
6646void
6647qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6648{
6649 struct qla_hw_data *ha = vha->hw;
9cd883f0 6650 u32 tmp;
99e1b683
QT		 6651
6652 if (!QLA_TGT_MODE_ENABLED())
6653 return;
2d70c103 6654
ead03855 6655 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6656 if (!ha->tgt.saved_set) {
6657 /* We save only once */
6658 ha->tgt.saved_exchange_count = nv->exchange_count;
6659 ha->tgt.saved_firmware_options_1 =
6660 nv->firmware_options_1;
6661 ha->tgt.saved_firmware_options_2 =
6662 nv->firmware_options_2;
6663 ha->tgt.saved_firmware_options_3 =
6664 nv->firmware_options_3;
6665 ha->tgt.saved_set = 1;
6666 }
6667
99e1b683 6668 if (qla_tgt_mode_enabled(vha))
ead03855 6669 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6670 else /* dual */
6671 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6672
6673 /* Enable target mode */
ad950360 6674 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6675
6676 /* Disable ini mode, if requested */
726b8548 6677 if (qla_tgt_mode_enabled(vha))
ad950360 6678 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6679
6680 /* Disable Full Login after LIP */
ad950360 6681 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6682 /* Enable initial LIP */
ad950360 6683 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6684 if (ql2xtgt_tape_enable)
6685 /* Enable FC Tape support */
6686 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6687 else
6688 /* Disable FC Tape support */
6689 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6690
2d70c103 6691 /* Disable Full Login after LIP */
ad950360 6692 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6693
6694 /*
6695 * clear BIT 15 explicitly as we have seen at least
6696 * a couple of instances where this was set and this
6697 * was causing the firmware to not be initialized.
6698 */
6699 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6700 /* Enable target PRLI control */
ad950360 6701 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6702
6703 if (IS_QLA25XX(ha)) {
6704 /* Change Loop-prefer to Pt-Pt */
6705 tmp = ~(BIT_4|BIT_5|BIT_6);
6706 nv->firmware_options_2 &= cpu_to_le32(tmp);
6707 tmp = P2P << 4;
6708 nv->firmware_options_2 |= cpu_to_le32(tmp);
6709 }
2d70c103
NB		 6710 } else {
6711 if (ha->tgt.saved_set) {
6712 nv->exchange_count = ha->tgt.saved_exchange_count;
6713 nv->firmware_options_1 =
6714 ha->tgt.saved_firmware_options_1;
6715 nv->firmware_options_2 =
6716 ha->tgt.saved_firmware_options_2;
6717 nv->firmware_options_3 =
6718 ha->tgt.saved_firmware_options_3;
6719 }
6720 return;
6721 }
6722
7c3f8fd1 6723 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6724 if (vha->flags.init_done)
6725 fc_host_supported_classes(vha->host) =
6726 FC_COS_CLASS2 | FC_COS_CLASS3;
6727
ad950360 6728 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6729 } else {
6730 if (vha->flags.init_done)
6731 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6732
ad950360 6733 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6734 }
6735}
6736
6737void
6738qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6739 struct init_cb_24xx *icb)
6740{
6741 struct qla_hw_data *ha = vha->hw;
6742
481ce733
QT		 6743 if (!QLA_TGT_MODE_ENABLED())
6744 return;
6745
2d70c103
NB		 6746 if (ha->tgt.node_name_set) {
6747 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6748 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6749 }
481ce733
QT		 6750
6751 /* disable ZIO at start time. */
6752 if (!vha->flags.init_done) {
6753 uint32_t tmp;
6754 tmp = le32_to_cpu(icb->firmware_options_2);
6755 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6756 icb->firmware_options_2 = cpu_to_le32(tmp);
6757 }
2d70c103
NB		 6758}
6759
aa230bc5
AE		 6760void
6761qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6762{
6763 struct qla_hw_data *ha = vha->hw;
9cd883f0 6764 u32 tmp;
aa230bc5
AE		 6765
6766 if (!QLA_TGT_MODE_ENABLED())
6767 return;
6768
ead03855 6769 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6770 if (!ha->tgt.saved_set) {
6771 /* We save only once */
6772 ha->tgt.saved_exchange_count = nv->exchange_count;
6773 ha->tgt.saved_firmware_options_1 =
6774 nv->firmware_options_1;
6775 ha->tgt.saved_firmware_options_2 =
6776 nv->firmware_options_2;
6777 ha->tgt.saved_firmware_options_3 =
6778 nv->firmware_options_3;
6779 ha->tgt.saved_set = 1;
6780 }
6781
99e1b683 6782 if (qla_tgt_mode_enabled(vha))
ead03855 6783 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6784 else /* dual */
6785 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6786
6787 /* Enable target mode */
ad950360 6788 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6789
6790 /* Disable ini mode, if requested */
726b8548 6791 if (qla_tgt_mode_enabled(vha))
ad950360 6792 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6793 /* Disable Full Login after LIP */
ad950360 6794 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6795 /* Enable initial LIP */
ad950360 6796 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6797 /*
6798 * clear BIT 15 explicitly as we have seen at
6799 * least a couple of instances where this was set
6800 * and this was causing the firmware to not be
6801 * initialized.
6802 */
6803 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6804 if (ql2xtgt_tape_enable)
6805 /* Enable FC tape support */
6806 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6807 else
6808 /* Disable FC tape support */
6809 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6810
aa230bc5 6811 /* Disable Full Login after LIP */
ad950360 6812 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6813 /* Enable target PRLI control */
ad950360 6814 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6815
6816 /* Change Loop-prefer to Pt-Pt */
6817 tmp = ~(BIT_4|BIT_5|BIT_6);
6818 nv->firmware_options_2 &= cpu_to_le32(tmp);
6819 tmp = P2P << 4;
6820 nv->firmware_options_2 |= cpu_to_le32(tmp);
aa230bc5
AE		 6821 } else {
6822 if (ha->tgt.saved_set) {
6823 nv->exchange_count = ha->tgt.saved_exchange_count;
6824 nv->firmware_options_1 =
6825 ha->tgt.saved_firmware_options_1;
6826 nv->firmware_options_2 =
6827 ha->tgt.saved_firmware_options_2;
6828 nv->firmware_options_3 =
6829 ha->tgt.saved_firmware_options_3;
6830 }
6831 return;
6832 }
6833
7c3f8fd1 6834 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 6835 if (vha->flags.init_done)
6836 fc_host_supported_classes(vha->host) =
6837 FC_COS_CLASS2 | FC_COS_CLASS3;
6838
ad950360 6839 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6840 } else {
6841 if (vha->flags.init_done)
6842 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6843
ad950360 6844 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6845 }
6846}
6847
6848void
6849qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6850 struct init_cb_81xx *icb)
6851{
6852 struct qla_hw_data *ha = vha->hw;
6853
6854 if (!QLA_TGT_MODE_ENABLED())
6855 return;
6856
6857 if (ha->tgt.node_name_set) {
6858 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6859 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6860 }
481ce733
QT		 6861
6862 /* disable ZIO at start time. */
6863 if (!vha->flags.init_done) {
6864 uint32_t tmp;
6865 tmp = le32_to_cpu(icb->firmware_options_2);
6866 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6867 icb->firmware_options_2 = cpu_to_le32(tmp);
6868 }
6869
aa230bc5
AE		 6870}
6871
6872void
6873qlt_83xx_iospace_config(struct qla_hw_data *ha)
6874{
6875 if (!QLA_TGT_MODE_ENABLED())
6876 return;
6877
6878 ha->msix_count += 1; /* For ATIO Q */
6879}
6880
2d70c103
NB		 6881
6882void
6883qlt_modify_vp_config(struct scsi_qla_host *vha,
6884 struct vp_config_entry_24xx *vpmod)
6885{
ead03855
QT		 6886 /* enable target mode. Bit5 = 1 => disable */
6887 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6888 vpmod->options_idx1 &= ~BIT_5;
726b8548 6889
ead03855 6890 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6891 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6892 vpmod->options_idx1 &= ~BIT_4;
6893}
6894
6895void
6896qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6897{
482c9dc7
QT		 6898 int rc;
6899
2d70c103
NB		 6900 if (!QLA_TGT_MODE_ENABLED())
6901 return;
6902
c9558869 6903 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6904 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6905 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6906 } else {
6907 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6908 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6909 }
6910
0e8cd71c
SK		 6911 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6912 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6913
6914 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6915 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6916 qlt_unknown_atio_work_fn);
6917
2d70c103 6918 qlt_clear_mode(base_vha);
482c9dc7
QT		 6919
6920 rc = btree_init32(&ha->tgt.host_map);
6921 if (rc)
83548fe2 6922 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6923 "Unable to initialize ha->host_map btree\n");
6924
6925 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6926}
6927
aa230bc5
AE		 6928irqreturn_t
6929qla83xx_msix_atio_q(int irq, void *dev_id)
6930{
6931 struct rsp_que *rsp;
6932 scsi_qla_host_t *vha;
6933 struct qla_hw_data *ha;
6934 unsigned long flags;
6935
6936 rsp = (struct rsp_que *) dev_id;
6937 ha = rsp->hw;
6938 vha = pci_get_drvdata(ha->pdev);
6939
2f424b9b 6940 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6941
2f424b9b 6942 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6943
2f424b9b 6944 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6945
6946 return IRQ_HANDLED;
6947}
6948
2f424b9b
QT		 6949static void
6950qlt_handle_abts_recv_work(struct work_struct *work)
6951{
6952 struct qla_tgt_sess_op *op = container_of(work,
6953 struct qla_tgt_sess_op, work);
6954 scsi_qla_host_t *vha = op->vha;
6955 struct qla_hw_data *ha = vha->hw;
6956 unsigned long flags;
6957
7c3f8fd1
QT		 6958 if (qla2x00_reset_active(vha) ||
6959 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 6960 return;
6961
6962 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6963 qlt_24xx_process_atio_queue(vha, 0);
6964 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6965
6966 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 6967 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 6968 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6969
6970 kfree(op);
2f424b9b
QT		 6971}
6972
6973void
82de802a
QT		 6974qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6975 response_t *pkt)
2f424b9b
QT		 6976{
6977 struct qla_tgt_sess_op *op;
6978
6979 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6980
6981 if (!op) {
6982 /* do not reach for ATIO queue here. This is best effort err
6983 * recovery at this point.
6984 */
82de802a 6985 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 6986 return;
6987 }
6988
6989 memcpy(&op->atio, pkt, sizeof(*pkt));
6990 op->vha = vha;
7c3f8fd1 6991 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 6992 op->rsp = rsp;
2f424b9b
QT		 6993 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6994 queue_work(qla_tgt_wq, &op->work);
6995 return;
6996}
6997
2d70c103
NB		 6998int
6999qlt_mem_alloc(struct qla_hw_data *ha)
7000{
7001 if (!QLA_TGT_MODE_ENABLED())
7002 return 0;
7003
7004 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
7005 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
7006 if (!ha->tgt.tgt_vp_map)
7007 return -ENOMEM;
7008
7009 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7010 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7011 &ha->tgt.atio_dma, GFP_KERNEL);
7012 if (!ha->tgt.atio_ring) {
7013 kfree(ha->tgt.tgt_vp_map);
7014 return -ENOMEM;
7015 }
7016 return 0;
7017}
7018
7019void
7020qlt_mem_free(struct qla_hw_data *ha)
7021{
7022 if (!QLA_TGT_MODE_ENABLED())
7023 return;
7024
7025 if (ha->tgt.atio_ring) {
7026 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7027 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7028 ha->tgt.atio_dma);
7029 }
7030 kfree(ha->tgt.tgt_vp_map);
7031}
7032
7033/* vport_slock to be held by the caller */
7034void
7035qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7036{
482c9dc7
QT		 7037 void *slot;
7038 u32 key;
7039 int rc;
7040
2d70c103
NB		 7041 if (!QLA_TGT_MODE_ENABLED())
7042 return;
7043
482c9dc7
QT		 7044 key = vha->d_id.b24;
7045
2d70c103
NB		 7046 switch (cmd) {
7047 case SET_VP_IDX:
7048 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7049 break;
7050 case SET_AL_PA:
482c9dc7
QT		 7051 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7052 if (!slot) {
83548fe2 7053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7054 "Save vha in host_map %p %06x\n", vha, key);
7055 rc = btree_insert32(&vha->hw->tgt.host_map,
7056 key, vha, GFP_ATOMIC);
7057 if (rc)
83548fe2 7058 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7059 "Unable to insert s_id into host_map: %06x\n",
7060 key);
7061 return;
7062 }
83548fe2
QT		 7063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7064 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7065 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7066 break;
7067 case RESET_VP_IDX:
7068 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7069 break;
7070 case RESET_AL_PA:
83548fe2 7071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7072 "clear vha in host_map %p %06x\n", vha, key);
7073 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7074 if (slot)
7075 btree_remove32(&vha->hw->tgt.host_map, key);
7076 vha->d_id.b24 = 0;
2d70c103
NB		 7077 break;
7078 }
7079}
7080
482c9dc7
QT		 7081void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7082{
482c9dc7
QT		 7083
7084 if (!vha->d_id.b24) {
482c9dc7
QT		 7085 vha->d_id = id;
7086 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7 7087 } else if (vha->d_id.b24 != id.b24) {
482c9dc7
QT		 7088 qlt_update_vp_map(vha, RESET_AL_PA);
7089 vha->d_id = id;
7090 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7
QT		 7091 }
7092}
7093
2d70c103
NB		 7094static int __init qlt_parse_ini_mode(void)
7095{
7096 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7097 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7098 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7099 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7100 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7101 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7102 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7103 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7104 else
7105 return false;
7106
7107 return true;
7108}
7109
7110int __init qlt_init(void)
7111{
7112 int ret;
7113
7114 if (!qlt_parse_ini_mode()) {
7115 ql_log(ql_log_fatal, NULL, 0xe06b,
7116 "qlt_parse_ini_mode() failed\n");
7117 return -EINVAL;
7118 }
7119
7120 if (!QLA_TGT_MODE_ENABLED())
7121 return 0;
7122
2d70c103
NB		 7123 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7124 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7125 qla_tgt_mgmt_cmd), 0, NULL);
7126 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7127 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7128 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7129 return -ENOMEM;
2d70c103
NB		 7130 }
7131
b7bd104e 7132 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7133 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7134 0, NULL);
b7bd104e
AP		 7135
7136 if (!qla_tgt_plogi_cachep) {
7137 ql_log(ql_log_fatal, NULL, 0xe06d,
7138 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7139 ret = -ENOMEM;
7140 goto out_mgmt_cmd_cachep;
7141 }
7142
2d70c103
NB		 7143 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7144 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7145 if (!qla_tgt_mgmt_cmd_mempool) {
7146 ql_log(ql_log_fatal, NULL, 0xe06e,
7147 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7148 ret = -ENOMEM;
b7bd104e 7149 goto out_plogi_cachep;
2d70c103
NB		 7150 }
7151
7152 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7153 if (!qla_tgt_wq) {
7154 ql_log(ql_log_fatal, NULL, 0xe06f,
7155 "alloc_workqueue for qla_tgt_wq failed\n");
7156 ret = -ENOMEM;
7157 goto out_cmd_mempool;
7158 }
7159 /*
7160 * Return 1 to signal that initiator-mode is being disabled
7161 */
7162 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7163
7164out_cmd_mempool:
7165 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7166out_plogi_cachep:
7167 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7168out_mgmt_cmd_cachep:
7169 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7170 return ret;
7171}
7172
7173void qlt_exit(void)
7174{
7175 if (!QLA_TGT_MODE_ENABLED())
7176 return;
7177
7178 destroy_workqueue(qla_tgt_wq);
7179 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7180 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7181 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7182}
Linux 6.x block layer and io_uring tree(s)