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scsi: qla2xxx: Move GPSC and GFPNID out of session management
[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
29528491
QT		 604 ql_dbg(ql_dbg_disc, vha, 0x20f3,
605 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
606 __func__, __LINE__,
607 sp->fcport->port_name,
608 vha->fcport_count);
609 sp->fcport->disc_state = DSC_UPD_FCPORT;
610 qla24xx_post_upd_fcport_work(vha, sp->fcport);
611 } else {
612 sp->fcport->login_retry = 0;
613 sp->fcport->disc_state = DSC_LOGIN_COMPLETE;
614 sp->fcport->deleted = 0;
615 sp->fcport->logout_on_delete = 1;
726b8548
QT		 616 }
617 break;
618
619 case SRB_NACK_LOGO:
620 sp->fcport->login_gen++;
621 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
622 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
623 break;
624 }
625 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
626
25ff6af1 627 sp->free(sp);
726b8548
QT		 628}
629
630int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
631 struct imm_ntfy_from_isp *ntfy, int type)
632{
633 int rval = QLA_FUNCTION_FAILED;
634 srb_t *sp;
635 char *c = NULL;
636
637 fcport->flags |= FCF_ASYNC_SENT;
638 switch (type) {
639 case SRB_NACK_PLOGI:
640 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
641 c = "PLOGI";
642 break;
643 case SRB_NACK_PRLI:
644 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 645 fcport->deleted = 0;
726b8548
QT		 646 c = "PRLI";
647 break;
648 case SRB_NACK_LOGO:
649 fcport->fw_login_state = DSC_LS_LOGO_PEND;
650 c = "LOGO";
651 break;
652 }
653
654 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
655 if (!sp)
656 goto done;
657
658 sp->type = type;
659 sp->name = "nack";
660
e74e7d95 661 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 662 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
663
664 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
726b8548
QT		 665 sp->done = qla2x00_async_nack_sp_done;
666
667 rval = qla2x00_start_sp(sp);
668 if (rval != QLA_SUCCESS)
669 goto done_free_sp;
670
83548fe2
QT		 671 ql_dbg(ql_dbg_disc, vha, 0x20f4,
672 "Async-%s %8phC hndl %x %s\n",
673 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 674
675 return rval;
676
677done_free_sp:
25ff6af1 678 sp->free(sp);
726b8548
QT		 679done:
680 fcport->flags &= ~FCF_ASYNC_SENT;
681 return rval;
682}
683
684void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
685{
686 fc_port_t *t;
687 unsigned long flags;
688
689 switch (e->u.nack.type) {
690 case SRB_NACK_PRLI:
691 mutex_lock(&vha->vha_tgt.tgt_mutex);
692 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
693 mutex_unlock(&vha->vha_tgt.tgt_mutex);
694 if (t) {
83548fe2 695 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 696 "%s create sess success %p", __func__, t);
697 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
698 /* create sess has an extra kref */
699 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
700 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
701 }
702 break;
703 }
704 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
705 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
706}
707
708void qla24xx_delete_sess_fn(struct work_struct *work)
709{
710 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
711 struct qla_hw_data *ha = fcport->vha->hw;
712 unsigned long flags;
713
714 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
715
716 if (fcport->se_sess) {
717 ha->tgt.tgt_ops->shutdown_sess(fcport);
718 ha->tgt.tgt_ops->put_sess(fcport);
719 } else {
720 qlt_unreg_sess(fcport);
721 }
722 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
723}
724
725/*
726 * Called from qla2x00_reg_remote_port()
727 */
728void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
729{
730 struct qla_hw_data *ha = vha->hw;
731 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
732 struct fc_port *sess = fcport;
733 unsigned long flags;
734
735 if (!vha->hw->tgt.tgt_ops)
736 return;
737
738 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
739 if (tgt->tgt_stop) {
740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
741 return;
742 }
743
744 if (fcport->disc_state == DSC_DELETE_PEND) {
745 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
746 return;
747 }
748
749 if (!sess->se_sess) {
750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
751
752 mutex_lock(&vha->vha_tgt.tgt_mutex);
753 sess = qlt_create_sess(vha, fcport, false);
754 mutex_unlock(&vha->vha_tgt.tgt_mutex);
755
756 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
757 } else {
758 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
759 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
760 return;
761 }
762
763 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 764 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 765 "%s: kref_get fail sess %8phC \n",
766 __func__, sess->port_name);
767 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
768 return;
769 }
770
771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
772 "qla_target(%u): %ssession for port %8phC "
773 "(loop ID %d) reappeared\n", vha->vp_idx,
774 sess->local ? "local " : "", sess->port_name, sess->loop_id);
775
776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
777 "Reappeared sess %p\n", sess);
778
779 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
780 fcport->loop_id,
781 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
782 }
783
784 if (sess && sess->local) {
785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
786 "qla_target(%u): local session for "
787 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
788 fcport->port_name, sess->loop_id);
789 sess->local = 0;
790 }
791 ha->tgt.tgt_ops->put_sess(sess);
792 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
793}
b7bd104e
AP		 794
795/*
796 * This is a zero-base ref-counting solution, since hardware_lock
797 * guarantees that ref_count is not modified concurrently.
798 * Upon successful return content of iocb is undefined
799 */
5d964837 800static struct qlt_plogi_ack_t *
b7bd104e
AP		 801qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
802 struct imm_ntfy_from_isp *iocb)
803{
5d964837 804 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 805
806 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
807 if (pla->id.b24 == id->b24) {
808 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 809 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 810 return pla;
811 }
812 }
813
814 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
815 if (!pla) {
816 ql_dbg(ql_dbg_async, vha, 0x5088,
817 "qla_target(%d): Allocation of plogi_ack failed\n",
818 vha->vp_idx);
819 return NULL;
820 }
821
5d964837 822 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 823 pla->id = *id;
824 list_add_tail(&pla->list, &vha->plogi_ack_list);
825
826 return pla;
827}
828
726b8548 829void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 830 struct qlt_plogi_ack_t *pla)
b7bd104e 831{
5d964837 832 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 833 port_id_t port_id;
834 uint16_t loop_id;
835 fc_port_t *fcport = pla->fcport;
836
b7bd104e
AP		 837 BUG_ON(!pla->ref_count);
838 pla->ref_count--;
839
840 if (pla->ref_count)
841 return;
842
726b8548 843 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 844 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 845 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
846 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
847 iocb->u.isp24.port_id[0],
848 le16_to_cpu(iocb->u.isp24.nport_handle),
849 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 850
851 port_id.b.domain = iocb->u.isp24.port_id[2];
852 port_id.b.area = iocb->u.isp24.port_id[1];
853 port_id.b.al_pa = iocb->u.isp24.port_id[0];
854 port_id.b.rsvd_1 = 0;
855
856 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
857
858 fcport->loop_id = loop_id;
859 fcport->d_id = port_id;
9cd883f0
QT		 860 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
861 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
862 else
863 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
726b8548
QT		 864
865 list_for_each_entry(fcport, &vha->vp_fcports, list) {
866 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
867 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
868 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
869 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
870 }
b7bd104e
AP		 871
872 list_del(&pla->list);
873 kmem_cache_free(qla_tgt_plogi_cachep, pla);
874}
875
726b8548 876void
5d964837
QT		 877qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
878 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 879{
5d964837 880 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 881 /* Inc ref_count first because link might already be pointing at pla */
882 pla->ref_count++;
883
726b8548
QT		 884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
885 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
886 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
887 sess, link, sess->port_name,
888 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
889 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
890 pla->ref_count, pla, link);
891
5ef696aa
QT		 892 if (link == QLT_PLOGI_LINK_CONFLICT) {
893 switch (sess->disc_state) {
894 case DSC_DELETED:
895 case DSC_DELETE_PEND:
896 pla->ref_count--;
897 return;
898 default:
899 break;
900 }
901 }
902
b7bd104e
AP		 903 if (sess->plogi_link[link])
904 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
905
726b8548
QT		 906 if (link == QLT_PLOGI_LINK_SAME_WWN)
907 pla->fcport = sess;
b7bd104e
AP		 908
909 sess->plogi_link[link] = pla;
910}
911
71cdc079
AP		 912typedef struct {
913 /* These fields must be initialized by the caller */
914 port_id_t id;
915 /*
916 * number of cmds dropped while we were waiting for
917 * initiator to ack LOGO initialize to 1 if LOGO is
918 * triggered by a command, otherwise, to 0
919 */
920 int cmd_count;
921
922 /* These fields are used by callee */
923 struct list_head list;
924} qlt_port_logo_t;
925
926static void
927qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
928{
929 qlt_port_logo_t *tmp;
930 int res;
931
932 mutex_lock(&vha->vha_tgt.tgt_mutex);
933
934 list_for_each_entry(tmp, &vha->logo_list, list) {
935 if (tmp->id.b24 == logo->id.b24) {
936 tmp->cmd_count += logo->cmd_count;
937 mutex_unlock(&vha->vha_tgt.tgt_mutex);
938 return;
939 }
940 }
941
942 list_add_tail(&logo->list, &vha->logo_list);
943
944 mutex_unlock(&vha->vha_tgt.tgt_mutex);
945
946 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
947
948 mutex_lock(&vha->vha_tgt.tgt_mutex);
949 list_del(&logo->list);
950 mutex_unlock(&vha->vha_tgt.tgt_mutex);
951
b7bd104e
AP		 952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
953 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
954 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
955 logo->cmd_count, res);
71cdc079
AP		 956}
957
9dd9686b 958void qlt_free_session_done(struct work_struct *work)
2d70c103 959{
5d964837 960 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 961 free_work);
962 struct qla_tgt *tgt = sess->tgt;
963 struct scsi_qla_host *vha = sess->vha;
964 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 965 unsigned long flags;
966 bool logout_started = false;
41dc529a 967 scsi_qla_host_t *base_vha;
9cd883f0
QT		 968 struct qlt_plogi_ack_t *own =
969 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
a6ca8878
AP		 970
971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
972 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 973 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 974 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 975 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 976 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 977 sess->send_els_logo);
2d70c103 978
726b8548 979 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 980 if (sess->send_els_logo) {
981 qlt_port_logo_t logo;
71cdc079 982
41dc529a
QT		 983 logo.id = sess->d_id;
984 logo.cmd_count = 0;
a2390348 985 sess->send_els_logo = 0;
41dc529a
QT		 986 qlt_send_first_logo(vha, &logo);
987 }
988
ba743f91 989 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 990 int rc;
991
9cd883f0
QT		 992 if (!own ||
993 (own &&
994 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
995 rc = qla2x00_post_async_logout_work(vha, sess,
996 NULL);
997 if (rc != QLA_SUCCESS)
998 ql_log(ql_log_warn, vha, 0xf085,
999 "Schedule logo failed sess %p rc %d\n",
1000 sess, rc);
1001 else
1002 logout_started = true;
1003 } else if (own && (own->iocb.u.isp24.status_subcode ==
1004 ELS_PRLI) && ha->flags.rida_fmt2) {
1005 rc = qla2x00_post_async_prlo_work(vha, sess,
1006 NULL);
1007 if (rc != QLA_SUCCESS)
1008 ql_log(ql_log_warn, vha, 0xf085,
1009 "Schedule PRLO failed sess %p rc %d\n",
1010 sess, rc);
1011 else
1012 logout_started = true;
1013 }
41dc529a 1014 }
726b8548 1015 }
a6ca8878 1016
2d70c103
NB		 1017 /*
1018 * Release the target session for FC Nexus from fabric module code.
1019 */
1020 if (sess->se_sess != NULL)
1021 ha->tgt.tgt_ops->free_session(sess);
1022
a6ca8878
AP		 1023 if (logout_started) {
1024 bool traced = false;
1025
6aa7de05 1026 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878
AP		 1027 if (!traced) {
1028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1029 "%s: waiting for sess %p logout\n",
1030 __func__, sess);
1031 traced = true;
1032 }
1033 msleep(100);
1034 }
1035
726b8548 1036 ql_dbg(ql_dbg_disc, vha, 0xf087,
9cd883f0 1037 "%s: sess %p logout completed\n", __func__, sess);
41dc529a
QT		 1038 }
1039
1040 if (sess->logo_ack_needed) {
1041 sess->logo_ack_needed = 0;
1042 qla24xx_async_notify_ack(vha, sess,
1043 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1044 }
1045
726b8548
QT		 1046 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1047 if (sess->se_sess) {
1048 sess->se_sess = NULL;
1049 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1050 tgt->sess_count--;
1051 }
1052
1053 sess->disc_state = DSC_DELETED;
1054 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1055 sess->deleted = QLA_SESS_DELETED;
1056 sess->login_retry = vha->hw->login_retry_count;
1057
1058 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1059 vha->fcport_count--;
1060 sess->login_succ = 0;
1061 }
1062
ba743f91 1063 qla2x00_clear_loop_id(sess);
726b8548
QT		 1064
1065 if (sess->conflict) {
1066 sess->conflict->login_pause = 0;
1067 sess->conflict = NULL;
1068 if (!test_bit(UNLOADING, &vha->dpc_flags))
1069 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1070 }
1071
b7bd104e 1072 {
5d964837 1073 struct qlt_plogi_ack_t *con =
b7bd104e 1074 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1075 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1076
1077 if (con) {
5d964837 1078 iocb = &con->iocb;
b7bd104e 1079 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1080 "se_sess %p / sess %p port %8phC is gone,"
1081 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1082 sess->se_sess, sess, sess->port_name,
1083 own ? "releasing own PLOGI" : "no own PLOGI pending",
1084 own ? own->ref_count : -1,
1085 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1086 qlt_plogi_ack_unref(vha, con);
726b8548 1087 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1088 } else {
1089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1090 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1091 sess->se_sess, sess, sess->port_name,
1092 own ? "releasing own PLOGI" :
1093 "no own PLOGI pending",
1094 own ? own->ref_count : -1);
1095 }
1096
726b8548
QT		 1097 if (own) {
1098 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1099 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1100 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1101 }
b7bd104e 1102 }
1ae634eb 1103
5d964837
QT		 1104 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1105
2d70c103 1106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1107 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1108 sess, sess->port_name, vha->fcport_count);
2d70c103 1109
726b8548 1110 if (tgt && (tgt->sess_count == 0))
2d70c103 1111 wake_up_all(&tgt->waitQ);
726b8548
QT		 1112
1113 if (vha->fcport_count == 0)
1114 wake_up_all(&vha->fcport_waitQ);
1115
41dc529a 1116 base_vha = pci_get_drvdata(ha->pdev);
1ae634eb
QT		 1117
1118 sess->free_pending = 0;
1119
41dc529a
QT		 1120 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1121 return;
1122
a4239945
QT		 1123 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1124 switch (vha->host->active_mode) {
1125 case MODE_INITIATOR:
1126 case MODE_DUAL:
1127 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1128 qla2xxx_wake_dpc(vha);
1129 break;
1130 case MODE_TARGET:
1131 default:
1132 /* no-op */
1133 break;
1134 }
726b8548 1135 }
2d70c103
NB		 1136}
1137
7560151b 1138/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1139void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1140{
1141 struct scsi_qla_host *vha = sess->vha;
1ae634eb 1142 unsigned long flags;
2d70c103 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
1ae634eb
QT		 1148 spin_lock_irqsave(&sess->vha->work_lock, flags);
1149 if (sess->free_pending) {
1150 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1151 return;
1152 }
1153 sess->free_pending = 1;
1154 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1155
36c78452
QT		 1156 if (sess->se_sess)
1157 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1158
5d964837
QT		 1159 qla2x00_mark_device_lost(vha, sess, 1, 1);
1160
a6ca8878 1161 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1162 sess->disc_state = DSC_DELETE_PEND;
1163 sess->last_rscn_gen = sess->rscn_gen;
1164 sess->last_login_gen = sess->login_gen;
2d70c103 1165
9dd9686b
DT		 1166 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1167 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1168 sess->nvme_flag |= NVME_FLAG_DELETING;
a5d42f4c 1169 schedule_work(&sess->nvme_del_work);
9dd9686b
DT		 1170 } else {
1171 INIT_WORK(&sess->free_work, qlt_free_session_done);
1172 schedule_work(&sess->free_work);
1173 }
2d70c103 1174}
5d964837 1175EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1176
2d70c103
NB		 1177static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1178{
1179 struct qla_hw_data *ha = vha->hw;
5d964837 1180 struct fc_port *sess = NULL;
2d70c103
NB		 1181 uint16_t loop_id;
1182 int res = 0;
1183 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1184 unsigned long flags;
2d70c103
NB		 1185
1186 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1187 if (loop_id == 0xFFFF) {
2d70c103 1188 /* Global event */
b2032fd5 1189 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1190 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1191 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1192 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1193 } else {
7560151b 1194 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1195 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1196 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1197 }
1198
1199 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1200 "Using sess for qla_tgt_reset: %p\n", sess);
1201 if (!sess) {
1202 res = -ESRCH;
1203 return res;
1204 }
1205
1206 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1207 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1208 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1209 mcmd, loop_id);
1210
bb1181c9 1211 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1212}
1213
726b8548
QT		 1214static void qla24xx_chk_fcp_state(struct fc_port *sess)
1215{
7c3f8fd1 1216 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1217 sess->logout_on_delete = 0;
1218 sess->logo_ack_needed = 0;
1219 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1220 sess->scan_state = 0;
1221 }
1222}
1223
94cff6e1 1224void qlt_schedule_sess_for_deletion(struct fc_port *sess)
2d70c103
NB		 1225{
1226 struct qla_tgt *tgt = sess->tgt;
1c6cacf4 1227 struct qla_hw_data *ha = sess->vha->hw;
d8630bb9 1228 unsigned long flags;
2d70c103 1229
726b8548
QT		 1230 if (sess->disc_state == DSC_DELETE_PEND)
1231 return;
1232
1233 if (sess->disc_state == DSC_DELETED) {
1234 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1235 wake_up_all(&tgt->waitQ);
1236 if (sess->vha->fcport_count == 0)
1237 wake_up_all(&sess->vha->fcport_waitQ);
1238
1239 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1240 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1241 return;
1242 }
2d70c103 1243
1c6cacf4 1244 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
726b8548
QT		 1245 if (sess->deleted == QLA_SESS_DELETED)
1246 sess->logout_on_delete = 0;
1247
d8630bb9 1248 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1c6cacf4 1249 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
d8630bb9
QT		 1250 return;
1251 }
726b8548 1252 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
1c6cacf4 1253 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
d8630bb9
QT		 1254
1255 sess->disc_state = DSC_DELETE_PEND;
1256
726b8548 1257 qla24xx_chk_fcp_state(sess);
2d70c103 1258
726b8548
QT		 1259 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1260 "Scheduling sess %p for deletion\n", sess);
2d70c103 1261
a01c77d2 1262 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1c6cacf4 1263 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
726b8548 1264}
2d70c103 1265
c5701042 1266static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1267{
5d964837
QT		 1268 struct fc_port *sess;
1269 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1270
5d964837
QT		 1271 list_for_each_entry(sess, &vha->vp_fcports, list) {
1272 if (sess->se_sess)
94cff6e1 1273 qlt_schedule_sess_for_deletion(sess);
5d964837 1274 }
2d70c103
NB		 1275
1276 /* At this point tgt could be already dead */
1277}
1278
1279static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1280 uint16_t *loop_id)
1281{
1282 struct qla_hw_data *ha = vha->hw;
1283 dma_addr_t gid_list_dma;
1284 struct gid_list_info *gid_list;
1285 char *id_iter;
1286 int res, rc, i;
1287 uint16_t entries;
1288
1289 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1290 &gid_list_dma, GFP_KERNEL);
1291 if (!gid_list) {
1292 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1293 "qla_target(%d): DMA Alloc failed of %u\n",
1294 vha->vp_idx, qla2x00_gid_list_size(ha));
1295 return -ENOMEM;
1296 }
1297
1298 /* Get list of logged in devices */
15f30a57 1299 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1300 if (rc != QLA_SUCCESS) {
1301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1302 "qla_target(%d): get_id_list() failed: %x\n",
1303 vha->vp_idx, rc);
71cdc079 1304 res = -EBUSY;
2d70c103
NB		 1305 goto out_free_id_list;
1306 }
1307
1308 id_iter = (char *)gid_list;
71cdc079 1309 res = -ENOENT;
2d70c103
NB		 1310 for (i = 0; i < entries; i++) {
1311 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1312 if ((gid->al_pa == s_id[2]) &&
1313 (gid->area == s_id[1]) &&
1314 (gid->domain == s_id[0])) {
1315 *loop_id = le16_to_cpu(gid->loop_id);
1316 res = 0;
1317 break;
1318 }
1319 id_iter += ha->gid_list_info_size;
1320 }
1321
1322out_free_id_list:
1323 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1324 gid_list, gid_list_dma);
1325 return res;
1326}
1327
2d70c103
NB		 1328/*
1329 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1330 * Caller must put it.
1331 */
5d964837 1332static struct fc_port *qlt_create_sess(
2d70c103
NB		 1333 struct scsi_qla_host *vha,
1334 fc_port_t *fcport,
1335 bool local)
1336{
1337 struct qla_hw_data *ha = vha->hw;
726b8548 1338 struct fc_port *sess = fcport;
2d70c103 1339 unsigned long flags;
2d70c103 1340
726b8548
QT		 1341 if (vha->vha_tgt.qla_tgt->tgt_stop)
1342 return NULL;
2d70c103 1343
726b8548
QT		 1344 if (fcport->se_sess) {
1345 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1346 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1347 "%s: kref_get_unless_zero failed for %8phC\n",
1348 __func__, sess->port_name);
1349 return NULL;
2d70c103 1350 }
726b8548 1351 return fcport;
2d70c103 1352 }
0e8cd71c 1353 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1354 sess->local = local;
a6ca8878 1355
726b8548
QT		 1356 /*
1357 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1358 * session eventually ends and release corresponding nport handle.
1359 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1360 * code will adjust these flags as necessary.
1361 */
a6ca8878
AP		 1362 sess->logout_on_delete = 1;
1363 sess->keep_nport_handle = 0;
726b8548 1364 sess->logout_completed = 0;
2d70c103 1365
726b8548
QT		 1366 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1367 &fcport->port_name[0], sess) < 0) {
83548fe2 1368 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1369 "(%d) %8phC check_initiator_node_acl failed\n",
1370 vha->vp_idx, fcport->port_name);
1371 return NULL;
1372 } else {
1373 kref_init(&fcport->sess_kref);
1374 /*
1375 * Take an extra reference to ->sess_kref here to handle
1376 * fc_port access across ->tgt.sess_lock reaquire.
1377 */
1378 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1379 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1380 "%s: kref_get_unless_zero failed for %8phC\n",
1381 __func__, sess->port_name);
1382 return NULL;
1383 }
2d70c103 1384
726b8548
QT		 1385 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1386 if (!IS_SW_RESV_ADDR(sess->d_id))
1387 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1388
726b8548
QT		 1389 qlt_do_generation_tick(vha, &sess->generation);
1390 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1391 }
1392
1393 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1394 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1395 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1396 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1397
1398 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1399 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1400 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1401 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1402 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1403 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1404
1405 return sess;
1406}
1407
df673274
AP		 1408/*
1409 * max_gen - specifies maximum session generation
1410 * at which this deletion requestion is still valid
1411 */
1412void
1413qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1414{
0e8cd71c 1415 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1416 struct fc_port *sess = fcport;
7560151b 1417 unsigned long flags;
2d70c103
NB		 1418
1419 if (!vha->hw->tgt.tgt_ops)
1420 return;
1421
b2032fd5 1422 if (!tgt)
2d70c103
NB		 1423 return;
1424
7560151b 1425 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1426 if (tgt->tgt_stop) {
7560151b 1427 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1428 return;
1429 }
5d964837 1430 if (!sess->se_sess) {
7560151b 1431 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1432 return;
1433 }
1434
df673274 1435 if (max_gen - sess->generation < 0) {
7560151b 1436 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1437 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1438 "Ignoring stale deletion request for se_sess %p / sess %p"
1439 " for port %8phC, req_gen %d, sess_gen %d\n",
1440 sess->se_sess, sess, sess->port_name, max_gen,
1441 sess->generation);
1442 return;
1443 }
1444
2d70c103
NB		 1445 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1446
1447 sess->local = 1;
7560151b 1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1c6cacf4 1449 qlt_schedule_sess_for_deletion(sess);
2d70c103
NB		 1450}
1451
1452static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1453{
1454 struct qla_hw_data *ha = tgt->ha;
1455 unsigned long flags;
1456 int res;
1457 /*
1458 * We need to protect against race, when tgt is freed before or
1459 * inside wake_up()
1460 */
726b8548 1461 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1462 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1463 "tgt %p, sess_count=%d\n",
1464 tgt, tgt->sess_count);
2d70c103 1465 res = (tgt->sess_count == 0);
726b8548 1466 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1467
1468 return res;
1469}
1470
1471/* Called by tcm_qla2xxx configfs code */
3c231bda 1472int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1473{
1474 struct scsi_qla_host *vha = tgt->vha;
1475 struct qla_hw_data *ha = tgt->ha;
1476 unsigned long flags;
1477
3c231bda
NB		 1478 mutex_lock(&qla_tgt_mutex);
1479 if (!vha->fc_vport) {
1480 struct Scsi_Host *sh = vha->host;
1481 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1482 bool npiv_vports;
1483
1484 spin_lock_irqsave(sh->host_lock, flags);
1485 npiv_vports = (fc_host->npiv_vports_inuse);
1486 spin_unlock_irqrestore(sh->host_lock, flags);
1487
1488 if (npiv_vports) {
1489 mutex_unlock(&qla_tgt_mutex);
3a33dc95
QT		 1490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1491 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1492 return -EPERM;
1493 }
1494 }
2d70c103
NB		 1495 if (tgt->tgt_stop || tgt->tgt_stopped) {
1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1497 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1498 mutex_unlock(&qla_tgt_mutex);
1499 return -EPERM;
2d70c103
NB		 1500 }
1501
3a33dc95 1502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1503 vha->host_no, vha);
1504 /*
1505 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1506 * Lock is needed, because we still can get an incoming packet.
1507 */
0e8cd71c 1508 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1509 tgt->tgt_stop = 1;
c5701042 1510 qlt_clear_tgt_db(tgt);
0e8cd71c 1511 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1512 mutex_unlock(&qla_tgt_mutex);
2d70c103 1513
2d70c103
NB		 1514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1515 "Waiting for sess works (tgt %p)", tgt);
1516 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1517 while (!list_empty(&tgt->sess_works_list)) {
1518 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1519 flush_scheduled_work();
1520 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1521 }
1522 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1523
1524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1525 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1526
b85e0957 1527 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1528
1529 /* Big hammer */
ead03855
QT		 1530 if (!ha->flags.host_shutting_down &&
1531 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1532 qlt_disable_vha(vha);
1533
1534 /* Wait for sessions to clear out (just in case) */
b85e0957 1535 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
3c231bda 1536 return 0;
2d70c103
NB		 1537}
1538EXPORT_SYMBOL(qlt_stop_phase1);
1539
1540/* Called by tcm_qla2xxx configfs code */
1541void qlt_stop_phase2(struct qla_tgt *tgt)
1542{
3a33dc95 1543 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1544
1545 if (tgt->tgt_stopped) {
0e8cd71c 1546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1547 "Already in tgt->tgt_stopped state\n");
1548 dump_stack();
1549 return;
1550 }
3a33dc95
QT		 1551 if (!tgt->tgt_stop) {
1552 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1553 "%s: phase1 stop is not completed\n", __func__);
1554 dump_stack();
1555 return;
1556 }
2d70c103 1557
0e8cd71c 1558 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1559 tgt->tgt_stop = 0;
1560 tgt->tgt_stopped = 1;
0e8cd71c 1561 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1562
3a33dc95 1563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1564 tgt);
1565}
1566EXPORT_SYMBOL(qlt_stop_phase2);
1567
1568/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1569static void qlt_release(struct qla_tgt *tgt)
2d70c103 1570{
0e8cd71c 1571 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1572 void *node;
1573 u64 key = 0;
1574 u16 i;
1575 struct qla_qpair_hint *h;
bdbe24de 1576 struct qla_hw_data *ha = vha->hw;
2d70c103 1577
3a33dc95
QT		 1578 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1579 !tgt->tgt_stopped)
1580 qlt_stop_phase1(tgt);
1581
0e8cd71c 1582 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1583 qlt_stop_phase2(tgt);
1584
e326d22a
QT		 1585 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1586 unsigned long flags;
1587
1588 h = &tgt->qphints[i];
1589 if (h->qpair) {
1590 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1591 list_del(&h->hint_elem);
1592 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1593 h->qpair = NULL;
1594 }
1595 }
1596 kfree(tgt->qphints);
bdbe24de
QT		 1597 mutex_lock(&qla_tgt_mutex);
1598 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1599 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1600
1601 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1602 btree_remove64(&tgt->lun_qpair_map, key);
1603
1604 btree_destroy64(&tgt->lun_qpair_map);
1605
3be63b1e
SC		 1606 if (vha->vp_idx)
1607 if (ha->tgt.tgt_ops &&
1608 ha->tgt.tgt_ops->remove_target &&
1609 vha->vha_tgt.target_lport_ptr)
1610 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1611
0e8cd71c 1612 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1613
0e8cd71c 1614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1615 "Release of tgt %p finished\n", tgt);
1616
1617 kfree(tgt);
1618}
1619
1620/* ha->hardware_lock supposed to be held on entry */
1621static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1622 const void *param, unsigned int param_size)
1623{
1624 struct qla_tgt_sess_work_param *prm;
1625 unsigned long flags;
1626
1627 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1628 if (!prm) {
1629 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1630 "qla_target(%d): Unable to create session "
1631 "work, command will be refused", 0);
1632 return -ENOMEM;
1633 }
1634
1635 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1636 "Scheduling work (type %d, prm %p)"
1637 " to find session for param %p (size %d, tgt %p)\n",
1638 type, prm, param, param_size, tgt);
1639
1640 prm->type = type;
1641 memcpy(&prm->tm_iocb, param, param_size);
1642
1643 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1644 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1645 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1646
1647 schedule_work(&tgt->sess_work);
1648
1649 return 0;
1650}
1651
1652/*
1653 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1654 */
82de802a 1655static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1656 struct imm_ntfy_from_isp *ntfy,
1657 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1658 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1659{
82de802a 1660 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1661 struct qla_hw_data *ha = vha->hw;
1662 request_t *pkt;
1663 struct nack_to_isp *nack;
1664
ec7193e2
QT		 1665 if (!ha->flags.fw_started)
1666 return;
1667
2d70c103
NB		 1668 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1669
82de802a 1670 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1671 if (!pkt) {
1672 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1673 "qla_target(%d): %s failed: unable to allocate "
1674 "request packet\n", vha->vp_idx, __func__);
1675 return;
1676 }
1677
0e8cd71c
SK		 1678 if (vha->vha_tgt.qla_tgt != NULL)
1679 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1680
1681 pkt->entry_type = NOTIFY_ACK_TYPE;
1682 pkt->entry_count = 1;
1683
1684 nack = (struct nack_to_isp *)pkt;
1685 nack->ox_id = ntfy->ox_id;
1686
726b8548 1687 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1688 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1689 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1690 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1691 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1692 }
1693 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1694 nack->u.isp24.status = ntfy->u.isp24.status;
1695 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1696 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1697 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1698 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1699 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1700 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1701 nack->u.isp24.srr_reject_code = srr_reject_code;
1702 nack->u.isp24.srr_reject_code_expl = srr_explan;
1703 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1704
1705 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1706 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1707 vha->vp_idx, nack->u.isp24.status);
1708
63163e06
HM		 1709 /* Memory Barrier */
1710 wmb();
82de802a 1711 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1712}
1713
1714/*
1715 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1716 */
82de802a 1717static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1718 struct abts_recv_from_24xx *abts, uint32_t status,
1719 bool ids_reversed)
1720{
82de802a 1721 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1722 struct qla_hw_data *ha = vha->hw;
1723 struct abts_resp_to_24xx *resp;
1724 uint32_t f_ctl;
1725 uint8_t *p;
1726
1727 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1728 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1729 ha, abts, status);
1730
82de802a
QT		 1731 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1732 NULL);
2d70c103
NB		 1733 if (!resp) {
1734 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1735 "qla_target(%d): %s failed: unable to allocate "
1736 "request packet", vha->vp_idx, __func__);
1737 return;
1738 }
1739
1740 resp->entry_type = ABTS_RESP_24XX;
1741 resp->entry_count = 1;
1742 resp->nport_handle = abts->nport_handle;
1743 resp->vp_index = vha->vp_idx;
1744 resp->sof_type = abts->sof_type;
1745 resp->exchange_address = abts->exchange_address;
1746 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1747 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1748 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1749 F_CTL_SEQ_INITIATIVE);
1750 p = (uint8_t *)&f_ctl;
1751 resp->fcp_hdr_le.f_ctl[0] = *p++;
1752 resp->fcp_hdr_le.f_ctl[1] = *p++;
1753 resp->fcp_hdr_le.f_ctl[2] = *p;
1754 if (ids_reversed) {
1755 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1756 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1757 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1758 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1759 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1760 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1761 } else {
1762 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1763 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1764 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1765 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1766 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1767 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1768 }
1769 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1770 if (status == FCP_TMF_CMPL) {
1771 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1772 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1773 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1774 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1775 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1776 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1777 } else {
1778 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1779 resp->payload.ba_rjt.reason_code =
1780 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1781 /* Other bytes are zero */
1782 }
1783
0e8cd71c 1784 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1785
63163e06
HM		 1786 /* Memory Barrier */
1787 wmb();
8abfa9e2
QT		 1788 if (qpair->reqq_start_iocbs)
1789 qpair->reqq_start_iocbs(qpair);
1790 else
1791 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1792}
1793
1794/*
1795 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1796 */
1797static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1798 struct abts_resp_from_24xx_fw *entry)
1799{
1800 struct ctio7_to_24xx *ctio;
1801
1802 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1803 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
2d70c103 1804
82de802a
QT		 1805 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1806 vha->hw->base_qpair, NULL);
2d70c103
NB		 1807 if (ctio == NULL) {
1808 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1809 "qla_target(%d): %s failed: unable to allocate "
1810 "request packet\n", vha->vp_idx, __func__);
1811 return;
1812 }
1813
1814 /*
1815 * We've got on entrance firmware's response on by us generated
1816 * ABTS response. So, in it ID fields are reversed.
1817 */
1818
1819 ctio->entry_type = CTIO_TYPE7;
1820 ctio->entry_count = 1;
1821 ctio->nport_handle = entry->nport_handle;
1822 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1823 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1824 ctio->vp_index = vha->vp_idx;
1825 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1826 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1827 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1828 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1829 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1830 CTIO7_FLAGS_TERMINATE);
33a5fcee 1831 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1832
63163e06
HM		 1833 /* Memory Barrier */
1834 wmb();
2d70c103
NB		 1835 qla2x00_start_iocbs(vha, vha->req);
1836
82de802a
QT		 1837 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1838 (struct abts_recv_from_24xx *)entry,
2d70c103
NB		 1839 FCP_TMF_CMPL, true);
1840}
1841
8b2f5ff3
SN		 1842static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1843{
1844 struct qla_tgt_sess_op *op;
1845 struct qla_tgt_cmd *cmd;
8b631d87 1846 unsigned long flags;
8b2f5ff3 1847
8b631d87 1848 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1849 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1850 if (tag == op->atio.u.isp24.exchange_addr) {
1851 op->aborted = true;
8b631d87 1852 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1853 return 1;
1854 }
1855 }
1856
41dc529a
QT		 1857 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1858 if (tag == op->atio.u.isp24.exchange_addr) {
1859 op->aborted = true;
8b631d87 1860 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1861 return 1;
1862 }
1863 }
1864
8b2f5ff3
SN		 1865 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1866 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1867 cmd->aborted = 1;
8b631d87 1868 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1869 return 1;
1870 }
1871 }
8b631d87 1872 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1873
8b2f5ff3
SN		 1874 return 0;
1875}
1876
1877/* drop cmds for the given lun
1878 * XXX only looks for cmds on the port through which lun reset was recieved
1879 * XXX does not go through the list of other port (which may have cmds
1880 * for the same lun)
1881 */
1882static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1883 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1884{
1885 struct qla_tgt_sess_op *op;
1886 struct qla_tgt_cmd *cmd;
1887 uint32_t key;
8b631d87 1888 unsigned long flags;
8b2f5ff3
SN		 1889
1890 key = sid_to_key(s_id);
8b631d87 1891 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1892 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1893 uint32_t op_key;
f775bd14 1894 u64 op_lun;
8b2f5ff3
SN		 1895
1896 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1897 op_lun = scsilun_to_int(
1898 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1899 if (op_key == key && op_lun == lun)
1900 op->aborted = true;
1901 }
41dc529a
QT		 1902
1903 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1904 uint32_t op_key;
1905 u64 op_lun;
1906
1907 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1908 op_lun = scsilun_to_int(
1909 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1910 if (op_key == key && op_lun == lun)
1911 op->aborted = true;
1912 }
1913
8b2f5ff3
SN		 1914 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1915 uint32_t cmd_key;
f775bd14 1916 u64 cmd_lun;
8b2f5ff3
SN		 1917
1918 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1919 cmd_lun = scsilun_to_int(
1920 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1921 if (cmd_key == key && cmd_lun == lun)
193b50b9 1922 cmd->aborted = 1;
8b2f5ff3 1923 }
8b631d87 1924 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1925}
1926
2d70c103
NB		 1927/* ha->hardware_lock supposed to be held on entry */
1928static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1929 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1930{
1931 struct qla_hw_data *ha = vha->hw;
1932 struct qla_tgt_mgmt_cmd *mcmd;
1933 int rc;
06e97b48 1934
eb5ae233
NB		 1935 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1936 /* send TASK_ABORT response immediately */
48ea2ced 1937 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
eb5ae233 1938 return 0;
8b2f5ff3 1939 }
2d70c103
NB		 1940
1941 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1942 "qla_target(%d): task abort (tag=%d)\n",
1943 vha->vp_idx, abts->exchange_addr_to_abort);
1944
1945 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1946 if (mcmd == NULL) {
1947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1948 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1949 vha->vp_idx, __func__);
1950 return -ENOMEM;
1951 }
1952 memset(mcmd, 0, sizeof(*mcmd));
1953
1954 mcmd->sess = sess;
1955 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 1956 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 1957 mcmd->tmr_func = QLA_TGT_ABTS;
82de802a 1958 mcmd->qpair = ha->base_qpair;
72fcd4eb 1959 mcmd->vha = vha;
2d70c103 1960
eb5ae233
NB		 1961 /*
1962 * LUN is looked up by target-core internally based on the passed
1963 * abts->exchange_addr_to_abort tag.
1964 */
1965 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
2d70c103
NB		 1966 abts->exchange_addr_to_abort);
1967 if (rc != 0) {
1968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1969 "qla_target(%d): tgt_ops->handle_tmr()"
1970 " failed: %d", vha->vp_idx, rc);
1971 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1972 return -EFAULT;
1973 }
1974
1975 return 0;
1976}
1977
1978/*
1979 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1980 */
1981static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1982 struct abts_recv_from_24xx *abts)
1983{
1984 struct qla_hw_data *ha = vha->hw;
5d964837 1985 struct fc_port *sess;
2d70c103
NB		 1986 uint32_t tag = abts->exchange_addr_to_abort;
1987 uint8_t s_id[3];
1988 int rc;
7560151b 1989 unsigned long flags;
2d70c103
NB		 1990
1991 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1993 "qla_target(%d): ABTS: Abort Sequence not "
1994 "supported\n", vha->vp_idx);
82de802a
QT		 1995 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1996 false);
2d70c103
NB		 1997 return;
1998 }
1999
2000 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2002 "qla_target(%d): ABTS: Unknown Exchange "
2003 "Address received\n", vha->vp_idx);
82de802a
QT		 2004 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2005 false);
2d70c103
NB		 2006 return;
2007 }
2008
2009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2010 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2011 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2012 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2013 le32_to_cpu(abts->fcp_hdr_le.parameter));
2014
2015 s_id[0] = abts->fcp_hdr_le.s_id[2];
2016 s_id[1] = abts->fcp_hdr_le.s_id[1];
2017 s_id[2] = abts->fcp_hdr_le.s_id[0];
2018
7560151b 2019 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 2020 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2021 if (!sess) {
2022 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
03fea736 2023 "qla_target(%d): task abort for non-existent session\n",
2d70c103 2024 vha->vp_idx);
7560151b
QT		 2025 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2026
fb35265b
QT		 2027 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2028 false);
2d70c103
NB		 2029 return;
2030 }
7560151b
QT		 2031 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2032
2d70c103 2033
726b8548 2034 if (sess->deleted) {
82de802a
QT		 2035 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2036 false);
e52a8b45
AP		 2037 return;
2038 }
2039
2d70c103
NB		 2040 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2041 if (rc != 0) {
2042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2043 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2044 vha->vp_idx, rc);
82de802a
QT		 2045 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2046 false);
2d70c103
NB		 2047 return;
2048 }
2049}
2050
2051/*
2052 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2053 */
82de802a 2054static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2055 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2056{
72fcd4eb 2057 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2058 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2059 struct ctio7_to_24xx *ctio;
33a5fcee 2060 uint16_t temp;
2d70c103
NB		 2061
2062 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2063 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2064 ha, atio, resp_code);
2065
2d70c103 2066
82de802a 2067 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2068 if (ctio == NULL) {
2069 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2070 "qla_target(%d): %s failed: unable to allocate "
2071 "request packet\n", ha->vp_idx, __func__);
2072 return;
2073 }
2074
2075 ctio->entry_type = CTIO_TYPE7;
2076 ctio->entry_count = 1;
2077 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2078 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2079 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2080 ctio->vp_index = ha->vp_idx;
2081 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2082 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2083 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2084 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2085 temp = (atio->u.isp24.attr << 9)|
2086 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2087 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2088 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2089 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2090 ctio->u.status1.scsi_status =
ad950360
BVA		 2091 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2092 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2093 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2094
63163e06
HM		 2095 /* Memory Barrier */
2096 wmb();
8abfa9e2
QT		 2097 if (qpair->reqq_start_iocbs)
2098 qpair->reqq_start_iocbs(qpair);
2099 else
2100 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2101}
2102
2103void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2104{
2105 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2106}
2107EXPORT_SYMBOL(qlt_free_mcmd);
2108
be25152c
QT		 2109/*
2110 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2111 * reacquire
2112 */
8abfa9e2 2113void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2114 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2115{
2116 struct atio_from_isp *atio = &cmd->atio;
2117 struct ctio7_to_24xx *ctio;
2118 uint16_t temp;
8abfa9e2 2119 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2120
2121 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2122 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2123 "sense_key=%02x, asc=%02x, ascq=%02x",
2124 vha, atio, scsi_status, sense_key, asc, ascq);
2125
2126 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2127 if (!ctio) {
2128 ql_dbg(ql_dbg_async, vha, 0x3067,
2129 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2130 vha->host_no, __func__);
2131 goto out;
2132 }
2133
2134 ctio->entry_type = CTIO_TYPE7;
2135 ctio->entry_count = 1;
2136 ctio->handle = QLA_TGT_SKIP_HANDLE;
2137 ctio->nport_handle = cmd->sess->loop_id;
2138 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2139 ctio->vp_index = vha->vp_idx;
2140 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2141 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2142 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2143 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2144 temp = (atio->u.isp24.attr << 9) |
2145 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2146 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2147 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2148 ctio->u.status1.ox_id = cpu_to_le16(temp);
2149 ctio->u.status1.scsi_status =
2150 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2151 ctio->u.status1.response_len = cpu_to_le16(18);
2152 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2153
2154 if (ctio->u.status1.residual != 0)
2155 ctio->u.status1.scsi_status |=
2156 cpu_to_le16(SS_RESIDUAL_UNDER);
2157
2158 /* Response code and sense key */
2159 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2160 (&ctio->u.status1.sense_data)[0]);
2161 /* Additional sense length */
2162 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2163 /* ASC and ASCQ */
2164 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2165 (&ctio->u.status1.sense_data)[3]);
2166
2167 /* Memory Barrier */
2168 wmb();
2169
8abfa9e2
QT		 2170 if (qpair->reqq_start_iocbs)
2171 qpair->reqq_start_iocbs(qpair);
2172 else
2173 qla2x00_start_iocbs(vha, qpair->req);
2174
be25152c
QT		 2175out:
2176 return;
2177}
2178
2d70c103
NB		 2179/* callback from target fabric module code */
2180void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2181{
2182 struct scsi_qla_host *vha = mcmd->sess->vha;
2183 struct qla_hw_data *ha = vha->hw;
2184 unsigned long flags;
82de802a 2185 struct qla_qpair *qpair = mcmd->qpair;
2d70c103
NB		 2186
2187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2188 "TM response mcmd (%p) status %#x state %#x",
2189 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2190
82de802a 2191 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2192
7c3f8fd1 2193 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2194 /*
3bb67df5 2195 * Either the port is not online or this request was from
b6a029e1
AE		 2196 * previous life, just abort the processing.
2197 */
2198 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2199 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2200 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2201 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2202 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2203 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2204 return;
2205 }
2206
726b8548
QT		 2207 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2208 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2209 ELS_LOGO ||
2210 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2211 ELS_PRLO ||
2212 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2213 ELS_TPRLO) {
83548fe2 2214 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2215 "TM response logo %phC status %#x state %#x",
2216 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2217 mcmd->flags);
d8630bb9 2218 qlt_schedule_sess_for_deletion(mcmd->sess);
726b8548 2219 } else {
82de802a
QT		 2220 qlt_send_notify_ack(vha->hw->base_qpair,
2221 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
726b8548
QT		 2222 }
2223 } else {
d7236ac3 2224 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
82de802a 2225 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2d70c103
NB		 2226 mcmd->fc_tm_rsp, false);
2227 else
82de802a 2228 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2229 mcmd->fc_tm_rsp);
2230 }
2231 /*
2232 * Make the callback for ->free_mcmd() to queue_work() and invoke
2233 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2234 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2235 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2236 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2237 * qlt_xmit_tm_rsp() returns here..
2238 */
2239 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2240 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2241}
2242EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2243
2244/* No locks */
2245static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2246{
2247 struct qla_tgt_cmd *cmd = prm->cmd;
2248
2249 BUG_ON(cmd->sg_cnt == 0);
2250
2251 prm->sg = (struct scatterlist *)cmd->sg;
8abfa9e2 2252 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2d70c103
NB		 2253 cmd->sg_cnt, cmd->dma_data_direction);
2254 if (unlikely(prm->seg_cnt == 0))
2255 goto out_err;
2256
2257 prm->cmd->sg_mapped = 1;
2258
f83adb61
QT		 2259 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2260 /*
2261 * If greater than four sg entries then we need to allocate
2262 * the continuation entries
2263 */
b5399f7d 2264 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2265 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2266 QLA_TGT_DATASEGS_PER_CMD_24XX,
2267 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2268 } else {
2269 /* DIF */
2270 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2271 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2272 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2273 prm->tot_dsds = prm->seg_cnt;
2274 } else
2275 prm->tot_dsds = prm->seg_cnt;
2276
2277 if (cmd->prot_sg_cnt) {
2278 prm->prot_sg = cmd->prot_sg;
8abfa9e2 2279 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
f83adb61
QT		 2280 cmd->prot_sg, cmd->prot_sg_cnt,
2281 cmd->dma_data_direction);
2282 if (unlikely(prm->prot_seg_cnt == 0))
2283 goto out_err;
2284
2285 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2286 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2287 /* Dif Bundling not support here */
2288 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2289 cmd->blk_sz);
2290 prm->tot_dsds += prm->prot_seg_cnt;
2291 } else
2292 prm->tot_dsds += prm->prot_seg_cnt;
2293 }
2294 }
2d70c103 2295
2d70c103
NB		 2296 return 0;
2297
2298out_err:
22d84726 2299 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2300 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2301 0, prm->cmd->sg_cnt);
2302 return -1;
2303}
2304
f9b6721a 2305static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2306{
8abfa9e2
QT		 2307 struct qla_hw_data *ha;
2308 struct qla_qpair *qpair;
f9b6721a
JE		 2309 if (!cmd->sg_mapped)
2310 return;
2311
8abfa9e2
QT		 2312 qpair = cmd->qpair;
2313
2314 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2315 cmd->dma_data_direction);
2d70c103 2316 cmd->sg_mapped = 0;
f83adb61
QT		 2317
2318 if (cmd->prot_sg_cnt)
8abfa9e2 2319 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2320 cmd->dma_data_direction);
2321
d5ff0eed
JC		 2322 if (!cmd->ctx)
2323 return;
8abfa9e2 2324 ha = vha->hw;
f83adb61 2325 if (cmd->ctx_dsd_alloced)
d5ff0eed 2326 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2327
d5ff0eed 2328 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2329}
2330
82de802a 2331static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2332 uint32_t req_cnt)
2333{
d63b328f 2334 uint32_t cnt;
82de802a 2335 struct req_que *req = qpair->req;
2d70c103 2336
82de802a 2337 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2338 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2339 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2340
82de802a
QT		 2341 if (req->ring_index < cnt)
2342 req->cnt = cnt - req->ring_index;
2d70c103 2343 else
82de802a 2344 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2345
82de802a 2346 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2347 return -EAGAIN;
2d70c103 2348 }
bc7095a9 2349
82de802a 2350 req->cnt -= req_cnt;
2d70c103
NB		 2351
2352 return 0;
2353}
2354
2355/*
2356 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2357 */
82de802a 2358static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2359{
2360 /* Adjust ring index. */
82de802a
QT		 2361 req->ring_index++;
2362 if (req->ring_index == req->length) {
2363 req->ring_index = 0;
2364 req->ring_ptr = req->ring;
2d70c103 2365 } else {
82de802a 2366 req->ring_ptr++;
2d70c103 2367 }
82de802a 2368 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2369}
2370
2371/* ha->hardware_lock supposed to be held on entry */
82de802a 2372static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2373{
2d70c103 2374 uint32_t h;
c5419e26
QT		 2375 int index;
2376 uint8_t found = 0;
82de802a 2377 struct req_que *req = qpair->req;
c5419e26
QT		 2378
2379 h = req->current_outstanding_cmd;
2d70c103 2380
c5419e26
QT		 2381 for (index = 1; index < req->num_outstanding_cmds; index++) {
2382 h++;
2383 if (h == req->num_outstanding_cmds)
2384 h = 1;
2385
2386 if (h == QLA_TGT_SKIP_HANDLE)
2387 continue;
2388
2389 if (!req->outstanding_cmds[h]) {
2390 found = 1;
2d70c103
NB		 2391 break;
2392 }
c5419e26 2393 }
2d70c103 2394
c5419e26
QT		 2395 if (found) {
2396 req->current_outstanding_cmd = h;
2397 } else {
8abfa9e2
QT		 2398 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2399 "qla_target(%d): Ran out of empty cmd slots\n",
2400 qpair->vha->vp_idx);
c5419e26
QT		 2401 h = QLA_TGT_NULL_HANDLE;
2402 }
2d70c103
NB		 2403
2404 return h;
2405}
2406
2407/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2408static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2409 struct qla_tgt_prm *prm)
2d70c103
NB		 2410{
2411 uint32_t h;
2412 struct ctio7_to_24xx *pkt;
2d70c103 2413 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2414 uint16_t temp;
2d70c103 2415
82de802a 2416 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2417 prm->pkt = pkt;
2418 memset(pkt, 0, sizeof(*pkt));
2419
2420 pkt->entry_type = CTIO_TYPE7;
2421 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2422 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2423
82de802a 2424 h = qlt_make_handle(qpair);
2d70c103
NB		 2425 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2426 /*
2427 * CTIO type 7 from the firmware doesn't provide a way to
2428 * know the initiator's LOOP ID, hence we can't find
2429 * the session and, so, the command.
2430 */
2431 return -EAGAIN;
e326d22a
QT		 2432 } else
2433 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2434
82de802a
QT		 2435 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2436 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2437 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2438 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2439 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2440 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2441 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2442 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2443 temp = atio->u.isp24.attr << 9;
2444 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2445 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2446 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2447 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2448
2d70c103
NB		 2449 return 0;
2450}
2451
2452/*
2453 * ha->hardware_lock supposed to be held on entry. We have already made sure
2454 * that there is sufficient amount of request entries to not drop it.
2455 */
32d29b4c 2456static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2457{
2458 int cnt;
2459 uint32_t *dword_ptr;
2d70c103
NB		 2460
2461 /* Build continuation packets */
2462 while (prm->seg_cnt > 0) {
2463 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2464 (cont_a64_entry_t *)qlt_get_req_pkt(
2465 prm->cmd->qpair->req);
2d70c103
NB		 2466
2467 /*
2468 * Make sure that from cont_pkt64 none of
2469 * 64-bit specific fields used for 32-bit
2470 * addressing. Cast to (cont_entry_t *) for
2471 * that.
2472 */
2473
2474 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2475
2476 cont_pkt64->entry_count = 1;
2477 cont_pkt64->sys_define = 0;
2478
32d29b4c
QT		 2479 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2480 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2d70c103
NB		 2481
2482 /* Load continuation entry data segments */
2483 for (cnt = 0;
b5399f7d 2484 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103
NB		 2485 cnt++, prm->seg_cnt--) {
2486 *dword_ptr++ =
2487 cpu_to_le32(pci_dma_lo32
2488 (sg_dma_address(prm->sg)));
32d29b4c
QT		 2489 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2490 (sg_dma_address(prm->sg)));
2d70c103
NB		 2491 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2492
2d70c103
NB		 2493 prm->sg = sg_next(prm->sg);
2494 }
2495 }
2496}
2497
2498/*
2499 * ha->hardware_lock supposed to be held on entry. We have already made sure
2500 * that there is sufficient amount of request entries to not drop it.
2501 */
32d29b4c 2502static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2503{
2504 int cnt;
2505 uint32_t *dword_ptr;
2d70c103
NB		 2506 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2507
2d70c103
NB		 2508 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2509
2510 /* Setup packet address segment pointer */
2511 dword_ptr = pkt24->u.status0.dseg_0_address;
2512
2513 /* Set total data segment count */
2514 if (prm->seg_cnt)
2515 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2516
2517 if (prm->seg_cnt == 0) {
2518 /* No data transfer */
2519 *dword_ptr++ = 0;
2520 *dword_ptr = 0;
2521 return;
2522 }
2523
2524 /* If scatter gather */
2d70c103
NB		 2525
2526 /* Load command entry data segments */
2527 for (cnt = 0;
b5399f7d 2528 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103
NB		 2529 cnt++, prm->seg_cnt--) {
2530 *dword_ptr++ =
2531 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
32d29b4c
QT		 2532
2533 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2534 sg_dma_address(prm->sg)));
2535
2d70c103
NB		 2536 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2537
2d70c103
NB		 2538 prm->sg = sg_next(prm->sg);
2539 }
2540
32d29b4c 2541 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2542}
2543
2544static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2545{
2546 return cmd->bufflen > 0;
2547}
2548
be25152c
QT		 2549static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2550{
2551 struct qla_tgt_cmd *cmd;
2552 struct scsi_qla_host *vha;
2553
2554 /* asc 0x10=dif error */
2555 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2556 cmd = prm->cmd;
2557 vha = cmd->vha;
2558 /* ASCQ */
2559 switch (prm->sense_buffer[13]) {
2560 case 1:
83548fe2 2561 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2562 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2563 "se_cmd=%p tag[%x]",
2564 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2565 cmd->atio.u.isp24.exchange_addr);
2566 break;
2567 case 2:
83548fe2 2568 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2569 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2570 "se_cmd=%p tag[%x]",
2571 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2572 cmd->atio.u.isp24.exchange_addr);
2573 break;
2574 case 3:
83548fe2 2575 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2576 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2577 "se_cmd=%p tag[%x]",
2578 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2579 cmd->atio.u.isp24.exchange_addr);
2580 break;
2581 default:
83548fe2 2582 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2583 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2584 "se_cmd=%p tag[%x]",
2585 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2586 cmd->atio.u.isp24.exchange_addr);
2587 break;
2588 }
83548fe2 2589 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2590 }
2591}
2592
2d70c103
NB		 2593/*
2594 * Called without ha->hardware_lock held
2595 */
2596static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2597 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2598 uint32_t *full_req_cnt)
2599{
2d70c103 2600 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2601 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2602
2d70c103 2603 prm->cmd = cmd;
7c3f8fd1
QT		 2604 prm->tgt = cmd->tgt;
2605 prm->pkt = NULL;
2d70c103
NB		 2606 prm->rq_result = scsi_status;
2607 prm->sense_buffer = &cmd->sense_buffer[0];
2608 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2609 prm->sg = NULL;
2610 prm->seg_cnt = -1;
2611 prm->req_cnt = 1;
7c3f8fd1 2612 prm->residual = 0;
2d70c103 2613 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2614 prm->prot_sg = NULL;
2615 prm->prot_seg_cnt = 0;
2616 prm->tot_dsds = 0;
2d70c103 2617
2d70c103
NB		 2618 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2619 if (qlt_pci_map_calc_cnt(prm) != 0)
2620 return -EAGAIN;
2621 }
2622
2623 *full_req_cnt = prm->req_cnt;
2624
2625 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2626 prm->residual = se_cmd->residual_count;
22d84726 2627 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2628 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2629 prm->residual, se_cmd->tag,
2630 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2631 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2632 prm->rq_result |= SS_RESIDUAL_UNDER;
2633 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2634 prm->residual = se_cmd->residual_count;
22d84726 2635 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2636 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2637 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2638 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2639 prm->rq_result |= SS_RESIDUAL_OVER;
2640 }
2641
2642 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2643 /*
2644 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2645 * ignored in *xmit_response() below
2646 */
2647 if (qlt_has_data(cmd)) {
2648 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2649 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2650 (prm->rq_result != 0))) {
2651 prm->add_status_pkt = 1;
2652 (*full_req_cnt)++;
2653 }
2654 }
2655 }
2656
2d70c103
NB		 2657 return 0;
2658}
2659
7c3f8fd1
QT		 2660static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2661 int sending_sense)
2d70c103 2662{
7c3f8fd1 2663 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2664 return 0;
2665
2666 if (sending_sense)
2667 return cmd->conf_compl_supported;
2668 else
7c3f8fd1
QT		 2669 return cmd->qpair->enable_explicit_conf &&
2670 cmd->conf_compl_supported;
2d70c103
NB		 2671}
2672
2d70c103
NB		 2673static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2674 struct qla_tgt_prm *prm)
2675{
2676 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2677 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2678 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2679 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2680 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2681 CTIO7_FLAGS_EXPLICIT_CONFORM |
2682 CTIO7_FLAGS_CONFORM_REQ);
2683 }
2684 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2685 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2686 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2687 int i;
2688
7c3f8fd1 2689 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2690 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2691 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2692 "Skipping EXPLICIT_CONFORM and "
2693 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2694 "non GOOD status\n");
2695 goto skip_explict_conf;
2696 }
ad950360 2697 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2698 CTIO7_FLAGS_EXPLICIT_CONFORM |
2699 CTIO7_FLAGS_CONFORM_REQ);
2700 }
2701skip_explict_conf:
2702 ctio->u.status1.flags &=
ad950360 2703 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2704 ctio->u.status1.flags |=
ad950360 2705 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2706 ctio->u.status1.scsi_status |=
ad950360 2707 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2708 ctio->u.status1.sense_length =
2709 cpu_to_le16(prm->sense_buffer_len);
2710 for (i = 0; i < prm->sense_buffer_len/4; i++)
2711 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2712 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2713
2714 qlt_print_dif_err(prm);
2715
2d70c103
NB		 2716 } else {
2717 ctio->u.status1.flags &=
ad950360 2718 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2719 ctio->u.status1.flags |=
ad950360 2720 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2721 ctio->u.status1.sense_length = 0;
2722 memset(ctio->u.status1.sense_data, 0,
2723 sizeof(ctio->u.status1.sense_data));
2724 }
2725
2726 /* Sense with len > 24, is it possible ??? */
2727}
2728
f83adb61
QT		 2729static inline int
2730qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2731{
f83adb61
QT		 2732 switch (se_cmd->prot_op) {
2733 case TARGET_PROT_DOUT_INSERT:
2734 case TARGET_PROT_DIN_STRIP:
2735 if (ql2xenablehba_err_chk >= 1)
2736 return 1;
2737 break;
2738 case TARGET_PROT_DOUT_PASS:
2739 case TARGET_PROT_DIN_PASS:
2740 if (ql2xenablehba_err_chk >= 2)
2741 return 1;
2742 break;
2743 case TARGET_PROT_DIN_INSERT:
2744 case TARGET_PROT_DOUT_STRIP:
2745 return 1;
2746 default:
2747 break;
2748 }
2749 return 0;
2750}
2751
be25152c
QT		 2752static inline int
2753qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2754{
2755 switch (se_cmd->prot_op) {
2756 case TARGET_PROT_DIN_INSERT:
2757 case TARGET_PROT_DOUT_INSERT:
2758 case TARGET_PROT_DIN_STRIP:
2759 case TARGET_PROT_DOUT_STRIP:
2760 case TARGET_PROT_DIN_PASS:
2761 case TARGET_PROT_DOUT_PASS:
2762 return 1;
2763 default:
2764 return 0;
2765 }
2766 return 0;
2767}
2768
f83adb61 2769/*
be25152c 2770 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2771 */
be25152c
QT		 2772static void
2773qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2774 uint16_t *pfw_prot_opts)
f83adb61 2775{
be25152c 2776 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2777 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2778 scsi_qla_host_t *vha = cmd->tgt->vha;
2779 struct qla_hw_data *ha = vha->hw;
2780 uint32_t t32 = 0;
f83adb61 2781
be25152c
QT		 2782 /*
2783 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2784 * have been immplemented by TCM, before AppTag is avail.
2785 * Look for modesense_handlers[]
2786 */
c7ee3bd4 2787 ctx->app_tag = 0;
f83adb61
QT		 2788 ctx->app_tag_mask[0] = 0x0;
2789 ctx->app_tag_mask[1] = 0x0;
2790
be25152c
QT		 2791 if (IS_PI_UNINIT_CAPABLE(ha)) {
2792 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2793 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2794 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2795 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2796 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2797 }
2798
2799 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2800
f83adb61
QT		 2801 switch (se_cmd->prot_type) {
2802 case TARGET_DIF_TYPE0_PROT:
2803 /*
be25152c
QT		 2804 * No check for ql2xenablehba_err_chk, as it
2805 * would be an I/O error if hba tag generation
2806 * is not done.
f83adb61
QT		 2807 */
2808 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2809 /* enable ALL bytes of the ref tag */
2810 ctx->ref_tag_mask[0] = 0xff;
2811 ctx->ref_tag_mask[1] = 0xff;
2812 ctx->ref_tag_mask[2] = 0xff;
2813 ctx->ref_tag_mask[3] = 0xff;
2814 break;
f83adb61 2815 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2816 /*
2817 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2818 * REF tag, and 16 bit app tag.
2819 */
2820 ctx->ref_tag = cpu_to_le32(lba);
2821 if (!qla_tgt_ref_mask_check(se_cmd) ||
2822 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2823 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2824 break;
2825 }
2826 /* enable ALL bytes of the ref tag */
2827 ctx->ref_tag_mask[0] = 0xff;
2828 ctx->ref_tag_mask[1] = 0xff;
2829 ctx->ref_tag_mask[2] = 0xff;
2830 ctx->ref_tag_mask[3] = 0xff;
2831 break;
f83adb61 2832 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2833 /*
2834 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2835 * tag has to match LBA in CDB + N
2836 */
2837 ctx->ref_tag = cpu_to_le32(lba);
2838 if (!qla_tgt_ref_mask_check(se_cmd) ||
2839 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2840 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2841 break;
2842 }
2843 /* enable ALL bytes of the ref tag */
2844 ctx->ref_tag_mask[0] = 0xff;
2845 ctx->ref_tag_mask[1] = 0xff;
2846 ctx->ref_tag_mask[2] = 0xff;
2847 ctx->ref_tag_mask[3] = 0xff;
2848 break;
f83adb61 2849 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2850 /* For TYPE 3 protection: 16 bit GUARD only */
2851 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2852 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2853 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2854 break;
f83adb61
QT		 2855 }
2856}
2857
f83adb61 2858static inline int
82de802a 2859qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61
QT		 2860{
2861 uint32_t *cur_dsd;
f83adb61
QT		 2862 uint32_t transfer_length = 0;
2863 uint32_t data_bytes;
2864 uint32_t dif_bytes;
2865 uint8_t bundling = 1;
f83adb61
QT		 2866 struct crc_context *crc_ctx_pkt = NULL;
2867 struct qla_hw_data *ha;
2868 struct ctio_crc2_to_fw *pkt;
2869 dma_addr_t crc_ctx_dma;
2870 uint16_t fw_prot_opts = 0;
2871 struct qla_tgt_cmd *cmd = prm->cmd;
2872 struct se_cmd *se_cmd = &cmd->se_cmd;
2873 uint32_t h;
2874 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2875 struct qla_tc_param tc;
c7ee3bd4 2876 uint16_t t16;
82de802a 2877 scsi_qla_host_t *vha = cmd->vha;
f83adb61 2878
f83adb61
QT		 2879 ha = vha->hw;
2880
82de802a 2881 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 2882 prm->pkt = pkt;
2883 memset(pkt, 0, sizeof(*pkt));
2884
22d84726 2885 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 2886 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 2887 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 2888 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2889
2890 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2891 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2892 bundling = 0;
2893
2894 /* Compute dif len and adjust data len to incude protection */
2895 data_bytes = cmd->bufflen;
2896 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2897
2898 switch (se_cmd->prot_op) {
2899 case TARGET_PROT_DIN_INSERT:
2900 case TARGET_PROT_DOUT_STRIP:
2901 transfer_length = data_bytes;
be25152c
QT		 2902 if (cmd->prot_sg_cnt)
2903 data_bytes += dif_bytes;
f83adb61 2904 break;
f83adb61
QT		 2905 case TARGET_PROT_DIN_STRIP:
2906 case TARGET_PROT_DOUT_INSERT:
2907 case TARGET_PROT_DIN_PASS:
2908 case TARGET_PROT_DOUT_PASS:
2909 transfer_length = data_bytes + dif_bytes;
2910 break;
f83adb61
QT		 2911 default:
2912 BUG();
2913 break;
2914 }
2915
2916 if (!qlt_hba_err_chk_enabled(se_cmd))
2917 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2918 /* HBA error checking enabled */
2919 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2920 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2921 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2922 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2923 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2924 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2925 }
2926
2927 switch (se_cmd->prot_op) {
2928 case TARGET_PROT_DIN_INSERT:
2929 case TARGET_PROT_DOUT_INSERT:
2930 fw_prot_opts |= PO_MODE_DIF_INSERT;
2931 break;
2932 case TARGET_PROT_DIN_STRIP:
2933 case TARGET_PROT_DOUT_STRIP:
2934 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2935 break;
2936 case TARGET_PROT_DIN_PASS:
2937 case TARGET_PROT_DOUT_PASS:
2938 fw_prot_opts |= PO_MODE_DIF_PASS;
2939 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2940 break;
2941 default:/* Normal Request */
2942 fw_prot_opts |= PO_MODE_DIF_PASS;
2943 break;
2944 }
2945
f83adb61
QT		 2946 /* ---- PKT ---- */
2947 /* Update entry type to indicate Command Type CRC_2 IOCB */
2948 pkt->entry_type = CTIO_CRC2;
2949 pkt->entry_count = 1;
22d84726 2950 pkt->vp_index = cmd->vp_idx;
f83adb61 2951
82de802a 2952 h = qlt_make_handle(qpair);
f83adb61
QT		 2953 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2954 /*
2955 * CTIO type 7 from the firmware doesn't provide a way to
2956 * know the initiator's LOOP ID, hence we can't find
2957 * the session and, so, the command.
2958 */
2959 return -EAGAIN;
2960 } else
82de802a 2961 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 2962
82de802a
QT		 2963 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2964 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 2965 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2966 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2967 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2968 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2969 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2970 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2971
2972 /* silence compile warning */
2973 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2974 pkt->ox_id = cpu_to_le16(t16);
2975
2976 t16 = (atio->u.isp24.attr << 9);
2977 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2978 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2979
2980 /* Set transfer direction */
2981 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2982 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2983 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2984 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2985
f83adb61
QT		 2986 pkt->dseg_count = prm->tot_dsds;
2987 /* Fibre channel byte count */
2988 pkt->transfer_length = cpu_to_le32(transfer_length);
2989
f83adb61
QT		 2990 /* ----- CRC context -------- */
2991
2992 /* Allocate CRC context from global pool */
2993 crc_ctx_pkt = cmd->ctx =
501017f6 2994 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
f83adb61
QT		 2995
2996 if (!crc_ctx_pkt)
2997 goto crc_queuing_error;
2998
f83adb61
QT		 2999 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3000 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3001
3002 /* Set handle */
3003 crc_ctx_pkt->handle = pkt->handle;
3004
be25152c 3005 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 3006
3007 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3008 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3009 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3010
f83adb61
QT		 3011 if (!bundling) {
3012 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3013 } else {
3014 /*
3015 * Configure Bundling if we need to fetch interlaving
3016 * protection PCI accesses
3017 */
3018 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3019 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3020 crc_ctx_pkt->u.bundling.dseg_count =
3021 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3022 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3023 }
3024
3025 /* Finish the common fields of CRC pkt */
3026 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3027 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3028 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3029 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3030
be25152c
QT		 3031 memset((uint8_t *)&tc, 0 , sizeof(tc));
3032 tc.vha = vha;
3033 tc.blk_sz = cmd->blk_sz;
3034 tc.bufflen = cmd->bufflen;
3035 tc.sg = cmd->sg;
3036 tc.prot_sg = cmd->prot_sg;
3037 tc.ctx = crc_ctx_pkt;
3038 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3039
3040 /* Walks data segments */
ad950360 3041 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3042
3043 if (!bundling && prm->prot_seg_cnt) {
3044 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3045 prm->tot_dsds, &tc))
f83adb61
QT		 3046 goto crc_queuing_error;
3047 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3048 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3049 goto crc_queuing_error;
3050
3051 if (bundling && prm->prot_seg_cnt) {
3052 /* Walks dif segments */
c7ee3bd4 3053 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 3054
3055 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3056 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 3057 prm->prot_seg_cnt, &tc))
f83adb61
QT		 3058 goto crc_queuing_error;
3059 }
3060 return QLA_SUCCESS;
3061
3062crc_queuing_error:
3063 /* Cleanup will be performed by the caller */
82de802a 3064 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3065
3066 return QLA_FUNCTION_FAILED;
3067}
3068
2d70c103
NB		 3069/*
3070 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3071 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3072 */
3073int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3074 uint8_t scsi_status)
3075{
3076 struct scsi_qla_host *vha = cmd->vha;
82de802a 3077 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3078 struct ctio7_to_24xx *pkt;
3079 struct qla_tgt_prm prm;
3080 uint32_t full_req_cnt = 0;
3081 unsigned long flags = 0;
3082 int res;
3083
726b8548 3084 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3085 cmd->state = QLA_TGT_STATE_PROCESSED;
3086 if (cmd->sess->logout_completed)
3087 /* no need to terminate. FW already freed exchange. */
3088 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3089 else
82de802a 3090 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
a6ca8878
AP		 3091 return 0;
3092 }
a6ca8878 3093
22d84726 3094 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3095 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3096 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3097 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3098 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3099
3100 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3101 &full_req_cnt);
3102 if (unlikely(res != 0)) {
2d70c103
NB		 3103 return res;
3104 }
3105
82de802a 3106 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3107
ce1025cd 3108 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3109 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3110 else
60a9eadb 3111 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3112
7c3f8fd1 3113 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3114 /*
3bb67df5 3115 * Either the port is not online or this request was from
b6a029e1
AE		 3116 * previous life, just abort the processing.
3117 */
3118 cmd->state = QLA_TGT_STATE_PROCESSED;
3119 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3120 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3121 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3122 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3123 cmd->reset_count, qpair->chip_reset);
82de802a 3124 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3125 return 0;
3126 }
3127
2d70c103 3128 /* Does F/W have an IOCBs for this request */
82de802a 3129 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3130 if (unlikely(res))
3131 goto out_unmap_unlock;
3132
f83adb61 3133 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3134 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3135 else
82de802a 3136 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3137 if (unlikely(res != 0)) {
82de802a 3138 qpair->req->cnt += full_req_cnt;
2d70c103 3139 goto out_unmap_unlock;
810e30bc 3140 }
2d70c103
NB		 3141
3142 pkt = (struct ctio7_to_24xx *)prm.pkt;
3143
3144 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3145 pkt->u.status0.flags |=
ad950360 3146 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3147 CTIO7_FLAGS_STATUS_MODE_0);
3148
f83adb61 3149 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3150 qlt_load_data_segments(&prm);
2d70c103
NB		 3151
3152 if (prm.add_status_pkt == 0) {
3153 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3154 pkt->u.status0.scsi_status =
3155 cpu_to_le16(prm.rq_result);
3156 pkt->u.status0.residual =
3157 cpu_to_le32(prm.residual);
ad950360 3158 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3159 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3160 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3161 pkt->u.status0.flags |=
ad950360 3162 cpu_to_le16(
2d70c103
NB		 3163 CTIO7_FLAGS_EXPLICIT_CONFORM |
3164 CTIO7_FLAGS_CONFORM_REQ);
3165 }
3166 }
3167
3168 } else {
3169 /*
3170 * We have already made sure that there is sufficient
3171 * amount of request entries to not drop HW lock in
3172 * req_pkt().
3173 */
3174 struct ctio7_to_24xx *ctio =
82de802a
QT		 3175 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3176 qpair->req);
2d70c103 3177
22d84726 3178 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3179 "Building additional status packet 0x%p.\n",
3180 ctio);
2d70c103 3181
f83adb61
QT		 3182 /*
3183 * T10Dif: ctio_crc2_to_fw overlay ontop of
3184 * ctio7_to_24xx
3185 */
2d70c103 3186 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3187 /* reset back to CTIO7 */
2d70c103 3188 ctio->entry_count = 1;
f83adb61 3189 ctio->entry_type = CTIO_TYPE7;
2d70c103 3190 ctio->dseg_count = 0;
ad950360 3191 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3192 CTIO7_FLAGS_DATA_IN);
3193
3194 /* Real finish is ctio_m1's finish */
3195 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3196 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3197 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3198
3199 /* qlt_24xx_init_ctio_to_isp will correct
3200 * all neccessary fields that's part of CTIO7.
3201 * There should be no residual of CTIO-CRC2 data.
3202 */
2d70c103
NB		 3203 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3204 &prm);
2d70c103
NB		 3205 }
3206 } else
3207 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3208
3209
3210 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3211 cmd->cmd_sent_to_fw = 1;
2d70c103 3212
63163e06
HM		 3213 /* Memory Barrier */
3214 wmb();
8abfa9e2
QT		 3215 if (qpair->reqq_start_iocbs)
3216 qpair->reqq_start_iocbs(qpair);
3217 else
3218 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3219 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3220
3221 return 0;
3222
3223out_unmap_unlock:
f9b6721a 3224 qlt_unmap_sg(vha, cmd);
82de802a 3225 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3226
3227 return res;
3228}
3229EXPORT_SYMBOL(qlt_xmit_response);
3230
3231int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3232{
3233 struct ctio7_to_24xx *pkt;
3234 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3235 struct qla_tgt *tgt = cmd->tgt;
3236 struct qla_tgt_prm prm;
82de802a 3237 unsigned long flags = 0;
2d70c103 3238 int res = 0;
82de802a 3239 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3240
3241 memset(&prm, 0, sizeof(prm));
3242 prm.cmd = cmd;
3243 prm.tgt = tgt;
3244 prm.sg = NULL;
3245 prm.req_cnt = 1;
3246
2d70c103
NB		 3247 /* Calculate number of entries and segments required */
3248 if (qlt_pci_map_calc_cnt(&prm) != 0)
3249 return -EAGAIN;
3250
7c3f8fd1 3251 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3252 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3253 /*
3bb67df5 3254 * Either the port is not online or this request was from
b6a029e1
AE		 3255 * previous life, just abort the processing.
3256 */
3257 cmd->state = QLA_TGT_STATE_NEED_DATA;
3258 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3259 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3260 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3261 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3262 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3263 return 0;
3264 }
3265
82de802a 3266 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3267 /* Does F/W have an IOCBs for this request */
82de802a 3268 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3269 if (res != 0)
3270 goto out_unlock_free_unmap;
f83adb61 3271 if (cmd->se_cmd.prot_op)
82de802a 3272 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3273 else
82de802a 3274 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3275
810e30bc 3276 if (unlikely(res != 0)) {
82de802a 3277 qpair->req->cnt += prm.req_cnt;
2d70c103 3278 goto out_unlock_free_unmap;
810e30bc
QT		 3279 }
3280
2d70c103 3281 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3282 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3283 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3284
3285 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3286 qlt_load_data_segments(&prm);
2d70c103
NB		 3287
3288 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3289 cmd->cmd_sent_to_fw = 1;
2d70c103 3290
63163e06
HM		 3291 /* Memory Barrier */
3292 wmb();
8abfa9e2
QT		 3293 if (qpair->reqq_start_iocbs)
3294 qpair->reqq_start_iocbs(qpair);
3295 else
3296 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3297 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3298
3299 return res;
3300
3301out_unlock_free_unmap:
f9b6721a 3302 qlt_unmap_sg(vha, cmd);
82de802a 3303 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3304
3305 return res;
3306}
3307EXPORT_SYMBOL(qlt_rdy_to_xfer);
3308
f83adb61
QT		 3309
3310/*
be25152c 3311 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3312 */
be25152c 3313static void
8abfa9e2 3314qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3315 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3316{
3317 uint8_t *ap = &sts->actual_dif[0];
3318 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3319 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3320 uint8_t scsi_status, sense_key, asc, ascq;
3321 unsigned long flags;
8abfa9e2 3322 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3323
be25152c 3324 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3325
be25152c
QT		 3326 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3327 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3328 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3329
be25152c
QT		 3330 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3331 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3332 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3333
be25152c
QT		 3334 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3335 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3336
be25152c 3337 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3338
be25152c
QT		 3339 /* check appl tag */
3340 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3341 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3342 "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]",
3343 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3344 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3345 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3346 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3347
3348 cmd->dif_err_code = DIF_ERR_APP;
3349 scsi_status = SAM_STAT_CHECK_CONDITION;
3350 sense_key = ABORTED_COMMAND;
3351 asc = 0x10;
3352 ascq = 0x2;
f83adb61
QT		 3353 }
3354
3355 /* check ref tag */
be25152c 3356 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3357 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3358 "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] ",
3359 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3360 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3361 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3362 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3363
3364 cmd->dif_err_code = DIF_ERR_REF;
3365 scsi_status = SAM_STAT_CHECK_CONDITION;
3366 sense_key = ABORTED_COMMAND;
3367 asc = 0x10;
3368 ascq = 0x3;
f83adb61
QT		 3369 goto out;
3370 }
3371
be25152c
QT		 3372 /* check guard */
3373 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3374 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3375 "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]",
3376 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3377 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3378 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3379 cmd->atio.u.isp24.fcp_hdr.ox_id);
3380
be25152c
QT		 3381 cmd->dif_err_code = DIF_ERR_GRD;
3382 scsi_status = SAM_STAT_CHECK_CONDITION;
3383 sense_key = ABORTED_COMMAND;
3384 asc = 0x10;
3385 ascq = 0x1;
f83adb61
QT		 3386 }
3387out:
be25152c
QT		 3388 switch (cmd->state) {
3389 case QLA_TGT_STATE_NEED_DATA:
3390 /* handle_data will load DIF error code */
3391 cmd->state = QLA_TGT_STATE_DATA_IN;
3392 vha->hw->tgt.tgt_ops->handle_data(cmd);
3393 break;
3394 default:
3395 spin_lock_irqsave(&cmd->cmd_lock, flags);
3396 if (cmd->aborted) {
3397 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3398 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3399 break;
3400 }
3401 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3402
8abfa9e2
QT		 3403 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3404 ascq);
be25152c
QT		 3405 /* assume scsi status gets out on the wire.
3406 * Will not wait for completion.
3407 */
3408 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3409 break;
3410 }
3411}
f83adb61 3412
a6ca8878
AP		 3413/* If hardware_lock held on entry, might drop it, then reaquire */
3414/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3415static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3416 struct imm_ntfy_from_isp *ntfy)
3417{
3418 struct nack_to_isp *nack;
3419 struct qla_hw_data *ha = vha->hw;
3420 request_t *pkt;
3421 int ret = 0;
3422
3423 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3424 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3425
ec7193e2 3426 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3427 if (pkt == NULL) {
3428 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3429 "qla_target(%d): %s failed: unable to allocate "
3430 "request packet\n", vha->vp_idx, __func__);
3431 return -ENOMEM;
3432 }
3433
3434 pkt->entry_type = NOTIFY_ACK_TYPE;
3435 pkt->entry_count = 1;
4f060736 3436 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3437
3438 nack = (struct nack_to_isp *)pkt;
3439 nack->ox_id = ntfy->ox_id;
3440
3441 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3442 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3443 nack->u.isp24.flags = ntfy->u.isp24.flags &
3444 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3445 }
3446
3447 /* terminate */
3448 nack->u.isp24.flags |=
3449 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3450
3451 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3452 nack->u.isp24.status = ntfy->u.isp24.status;
3453 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3454 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3455 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3456 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3457 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3458 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3459
3460 qla2x00_start_iocbs(vha, vha->req);
3461 return ret;
3462}
3463
3464static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3465 struct imm_ntfy_from_isp *imm, int ha_locked)
3466{
3467 unsigned long flags = 0;
3468 int rc;
3469
a6ca8878
AP		 3470 if (ha_locked) {
3471 rc = __qlt_send_term_imm_notif(vha, imm);
3472
3473#if 0 /* Todo */
3474 if (rc == -ENOMEM)
3475 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3476#else
3477 if (rc) {
3478 }
a6ca8878
AP		 3479#endif
3480 goto done;
3481 }
3482
3483 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3484 rc = __qlt_send_term_imm_notif(vha, imm);
3485
3486#if 0 /* Todo */
3487 if (rc == -ENOMEM)
3488 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3489#endif
3490
3491done:
3492 if (!ha_locked)
3493 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3494}
3495
83548fe2
QT		 3496/*
3497 * If hardware_lock held on entry, might drop it, then reaquire
3498 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3499 */
82de802a 3500static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3501 struct qla_tgt_cmd *cmd,
3502 struct atio_from_isp *atio)
3503{
82de802a 3504 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3505 struct ctio7_to_24xx *ctio24;
3506 struct qla_hw_data *ha = vha->hw;
3507 request_t *pkt;
3508 int ret = 0;
33a5fcee 3509 uint16_t temp;
2d70c103 3510
83548fe2 3511 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3512
72fcd4eb
QT		 3513 if (cmd)
3514 vha = cmd->vha;
3515
82de802a 3516 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3517 if (pkt == NULL) {
3518 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3519 "qla_target(%d): %s failed: unable to allocate "
3520 "request packet\n", vha->vp_idx, __func__);
3521 return -ENOMEM;
3522 }
3523
3524 if (cmd != NULL) {
3525 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3526 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3527 "qla_target(%d): Terminating cmd %p with "
3528 "incorrect state %d\n", vha->vp_idx, cmd,
3529 cmd->state);
3530 } else
3531 ret = 1;
3532 }
3533
60a9eadb 3534 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3535 pkt->entry_count = 1;
3536 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3537
3538 ctio24 = (struct ctio7_to_24xx *)pkt;
3539 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3540 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3541 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3542 ctio24->vp_index = vha->vp_idx;
3543 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3544 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3545 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3546 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3547 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3548 CTIO7_FLAGS_TERMINATE;
3549 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3550 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3551 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3552
3553 /* Most likely, it isn't needed */
3554 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3555 &atio->u.isp24.fcp_cmnd.add_cdb[
3556 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3557 if (ctio24->u.status1.residual != 0)
3558 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3559
63163e06
HM		 3560 /* Memory Barrier */
3561 wmb();
8abfa9e2
QT		 3562 if (qpair->reqq_start_iocbs)
3563 qpair->reqq_start_iocbs(qpair);
3564 else
3565 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3566 return ret;
3567}
3568
82de802a 3569static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3570 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3571 int ul_abort)
2d70c103 3572{
82de802a 3573 struct scsi_qla_host *vha;
6bc85dd5 3574 unsigned long flags = 0;
2d70c103
NB		 3575 int rc;
3576
82de802a
QT		 3577 /* why use different vha? NPIV */
3578 if (cmd)
3579 vha = cmd->vha;
3580 else
3581 vha = qpair->vha;
2d70c103
NB		 3582
3583 if (ha_locked) {
82de802a 3584 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3585 if (rc == -ENOMEM)
3586 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3587 goto done;
3588 }
82de802a
QT		 3589 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3590 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3591 if (rc == -ENOMEM)
3592 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3593
2d70c103 3594done:
a07100e0 3595 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3596 if (cmd->sg_mapped)
3597 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3598 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3599 }
6bc85dd5
HM		 3600
3601 if (!ha_locked)
82de802a 3602 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3603
7b898542 3604 return;
2d70c103
NB		 3605}
3606
33e79977
QT		 3607static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3608{
3609 struct list_head free_list;
3610 struct qla_tgt_cmd *cmd, *tcmd;
3611
3612 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3613 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3614
3615 cmd = tcmd = NULL;
3616 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3617 INIT_LIST_HEAD(&free_list);
3618 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3619
3620 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3621 list_del(&cmd->cmd_list);
3622 /* This cmd was never sent to TCM. There is no need
3623 * to schedule free or call free_cmd
3624 */
3625 qlt_free_cmd(cmd);
3626 vha->hw->tgt.num_qfull_cmds_alloc--;
3627 }
3628 }
3629 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3630}
3631
3632static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3633{
3634 uint32_t total_leaked;
3635
3636 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3637
3638 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3639 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3640
3641 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3642 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3643 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3644
3645 if (IS_P3P_TYPE(vha->hw))
3646 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3647 else
3648 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3649 qla2xxx_wake_dpc(vha);
3650 }
3651
3652}
3653
a07100e0 3654int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3655{
3656 struct qla_tgt *tgt = cmd->tgt;
3657 struct scsi_qla_host *vha = tgt->vha;
3658 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3659 unsigned long flags;
7359df25
AP		 3660
3661 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3662 "qla_target(%d): terminating exchange for aborted cmd=%p "
3663 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3664 se_cmd->tag);
3665
a07100e0
QT		 3666 spin_lock_irqsave(&cmd->cmd_lock, flags);
3667 if (cmd->aborted) {
3668 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3669 /*
3670 * It's normal to see 2 calls in this path:
3671 * 1) XFER Rdy completion + CMD_T_ABORT
3672 * 2) TCM TMR - drain_state_list
3673 */
83548fe2
QT		 3674 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3675 "multiple abort. %p transport_state %x, t_state %x, "
3676 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3677 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3678 return EIO;
3679 }
193b50b9 3680 cmd->aborted = 1;
1eb42f96 3681 cmd->trc_flags |= TRC_ABORT;
a07100e0 3682 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3683
82de802a 3684 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3685 return 0;
7359df25
AP		 3686}
3687EXPORT_SYMBOL(qlt_abort_cmd);
3688
2d70c103
NB		 3689void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3690{
5d964837 3691 struct fc_port *sess = cmd->sess;
51a07f84 3692
f83adb61
QT		 3693 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3694 "%s: se_cmd[%p] ox_id %04x\n",
3695 __func__, &cmd->se_cmd,
3696 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3697
e07f8f65
SK		 3698 BUG_ON(cmd->cmd_in_wq);
3699
a07100e0
QT		 3700 if (cmd->sg_mapped)
3701 qlt_unmap_sg(cmd->vha, cmd);
3702
33e79977
QT		 3703 if (!cmd->q_full)
3704 qlt_decr_num_pend_cmds(cmd->vha);
3705
f83adb61 3706 BUG_ON(cmd->sg_mapped);
e07f8f65 3707 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3708 if (unlikely(cmd->free_sg))
3709 kfree(cmd->sg);
51a07f84
NB		 3710
3711 if (!sess || !sess->se_sess) {
3712 WARN_ON(1);
3713 return;
3714 }
e07f8f65 3715 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3716 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3717}
3718EXPORT_SYMBOL(qlt_free_cmd);
3719
2d70c103
NB		 3720/*
3721 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3722 */
82de802a 3723static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3724 struct qla_tgt_cmd *cmd, uint32_t status)
3725{
3726 int term = 0;
82de802a 3727 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3728
be25152c 3729 if (cmd->se_cmd.prot_op)
83548fe2 3730 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3731 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3732 "se_cmd=%p tag[%x] op %#x/%s",
3733 cmd->lba, cmd->lba,
3734 cmd->num_blks, &cmd->se_cmd,
3735 cmd->atio.u.isp24.exchange_addr,
3736 cmd->se_cmd.prot_op,
3737 prot_op_str(cmd->se_cmd.prot_op));
3738
2d70c103
NB		 3739 if (ctio != NULL) {
3740 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3741 term = !(c->flags &
ad950360 3742 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3743 } else
3744 term = 1;
3745
3746 if (term)
3efc31f7 3747 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3748
3749 return term;
3750}
3751
2d70c103
NB		 3752
3753/* ha->hardware_lock supposed to be held on entry */
3754static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3755 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103
NB		 3756{
3757 struct qla_tgt_cmd *cmd = NULL;
82de802a
QT		 3758 struct req_que *req;
3759 int qid = GET_QID(handle);
3760 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3761
82de802a
QT		 3762 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3763 return NULL;
2d70c103 3764
82de802a
QT		 3765 if (qid == rsp->req->id) {
3766 req = rsp->req;
3767 } else if (vha->hw->req_q_map[qid]) {
3768 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3769 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3770 vha->vp_idx, rsp->id, handle);
3771 req = vha->hw->req_q_map[qid];
3772 } else {
3773 return NULL;
3774 }
667024a3 3775
82de802a 3776 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3777
82de802a 3778 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3779 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3780 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3781 "qla_target(%d): Wrong handle %x received\n",
3782 vha->vp_idx, handle);
3783 return NULL;
3784 }
82de802a
QT		 3785
3786 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3787 if (unlikely(cmd == NULL)) {
c5419e26 3788 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3789 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3790 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3791 return NULL;
3792 }
82de802a 3793 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3794 } else if (ctio != NULL) {
3795 /* We can't get loop ID from CTIO7 */
3796 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3797 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3798 "support NULL handles\n", vha->vp_idx);
3799 return NULL;
3800 }
3801
3802 return cmd;
3803}
3804
c0cb4496 3805/* hardware_lock should be held by caller. */
c5419e26 3806void
c0cb4496
AE		 3807qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3808{
3809 struct qla_hw_data *ha = vha->hw;
c0cb4496
AE		 3810
3811 if (cmd->sg_mapped)
3812 qlt_unmap_sg(vha, cmd);
3813
c0cb4496
AE		 3814 /* TODO: fix debug message type and ids. */
3815 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3816 ql_dbg(ql_dbg_io, vha, 0xff00,
82de802a 3817 "HOST-ABORT: state=PROCESSED.\n");
c0cb4496
AE		 3818 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3819 cmd->write_data_transferred = 0;
3820 cmd->state = QLA_TGT_STATE_DATA_IN;
3821
3822 ql_dbg(ql_dbg_io, vha, 0xff01,
82de802a 3823 "HOST-ABORT: state=DATA_IN.\n");
c0cb4496
AE		 3824
3825 ha->tgt.tgt_ops->handle_data(cmd);
3826 return;
c0cb4496
AE		 3827 } else {
3828 ql_dbg(ql_dbg_io, vha, 0xff03,
82de802a 3829 "HOST-ABORT: state=BAD(%d).\n",
c0cb4496
AE		 3830 cmd->state);
3831 dump_stack();
3832 }
3833
1eb42f96 3834 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3835 ha->tgt.tgt_ops->free_cmd(cmd);
3836}
3837
2d70c103
NB		 3838/*
3839 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3840 */
82de802a
QT		 3841static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3842 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3843{
3844 struct qla_hw_data *ha = vha->hw;
3845 struct se_cmd *se_cmd;
2d70c103 3846 struct qla_tgt_cmd *cmd;
82de802a 3847 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3848
2d70c103
NB		 3849 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3850 /* That could happen only in case of an error/reset/abort */
3851 if (status != CTIO_SUCCESS) {
3852 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3853 "Intermediate CTIO received"
3854 " (status %x)\n", status);
3855 }
3856 return;
3857 }
3858
82de802a 3859 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3860 if (cmd == NULL)
2d70c103 3861 return;
092e1dc3 3862
2d70c103 3863 se_cmd = &cmd->se_cmd;
d564a372 3864 cmd->cmd_sent_to_fw = 0;
2d70c103 3865
f9b6721a 3866 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3867
3868 if (unlikely(status != CTIO_SUCCESS)) {
3869 switch (status & 0xFFFF) {
3870 case CTIO_LIP_RESET:
3871 case CTIO_TARGET_RESET:
3872 case CTIO_ABORTED:
7b898542 3873 /* driver request abort via Terminate exchange */
2d70c103
NB		 3874 case CTIO_TIMEOUT:
3875 case CTIO_INVALID_RX_ID:
3876 /* They are OK */
3877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3878 "qla_target(%d): CTIO with "
3879 "status %#x received, state %x, se_cmd %p, "
3880 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3881 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3882 status, cmd->state, se_cmd);
3883 break;
3884
3885 case CTIO_PORT_LOGGED_OUT:
3886 case CTIO_PORT_UNAVAILABLE:
71cdc079 3887 {
dacb5822
HM		 3888 int logged_out =
3889 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3890
2d70c103 3891 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3892 "qla_target(%d): CTIO with %s status %x "
2d70c103 3893 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3894 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3895 status, cmd->state, se_cmd);
2d70c103 3896
71cdc079
AP		 3897 if (logged_out && cmd->sess) {
3898 /*
3899 * Session is already logged out, but we need
3900 * to notify initiator, who's not aware of this
3901 */
3902 cmd->sess->logout_on_delete = 0;
3903 cmd->sess->send_els_logo = 1;
83548fe2 3904 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3905 "%s %d %8phC post del sess\n",
3906 __func__, __LINE__, cmd->sess->port_name);
3907
d8630bb9 3908 qlt_schedule_sess_for_deletion(cmd->sess);
71cdc079
AP		 3909 }
3910 break;
3911 }
f83adb61
QT		 3912 case CTIO_DIF_ERROR: {
3913 struct ctio_crc_from_fw *crc =
3914 (struct ctio_crc_from_fw *)ctio;
3915 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3916 "qla_target(%d): CTIO with DIF_ERROR status %x "
3917 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3918 "expect_dif[0x%llx]\n",
f83adb61
QT		 3919 vha->vp_idx, status, cmd->state, se_cmd,
3920 *((u64 *)&crc->actual_dif[0]),
3921 *((u64 *)&crc->expected_dif[0]));
3922
8abfa9e2 3923 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 3924 return;
f83adb61 3925 }
2d70c103
NB		 3926 default:
3927 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3928 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3929 vha->vp_idx, status, cmd->state, se_cmd);
3930 break;
3931 }
3932
7b898542 3933
193b50b9 3934 /* "cmd->aborted" means
7b898542
QT		 3935 * cmd is already aborted/terminated, we don't
3936 * need to terminate again. The exchange is already
3937 * cleaned up/freed at FW level. Just cleanup at driver
3938 * level.
3939 */
3940 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3941 (!cmd->aborted)) {
1eb42f96 3942 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 3943 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 3944 return;
7b898542 3945 }
2d70c103
NB		 3946 }
3947
3948 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3949 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3950 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3951 cmd->state = QLA_TGT_STATE_DATA_IN;
3952
52c82823 3953 if (status == CTIO_SUCCESS)
2d70c103
NB		 3954 cmd->write_data_transferred = 1;
3955
2d70c103
NB		 3956 ha->tgt.tgt_ops->handle_data(cmd);
3957 return;
193b50b9 3958 } else if (cmd->aborted) {
1eb42f96 3959 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3961 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3962 } else {
1eb42f96 3963 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3964 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3965 "qla_target(%d): A command in state (%d) should "
3966 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3967 }
3968
7b898542 3969 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3970 !cmd->aborted) {
2d70c103
NB		 3971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3972 dump_stack();
3973 }
3974
3975 ha->tgt.tgt_ops->free_cmd(cmd);
3976}
3977
2d70c103
NB		 3978static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3979 uint8_t task_codes)
3980{
3981 int fcp_task_attr;
3982
3983 switch (task_codes) {
3984 case ATIO_SIMPLE_QUEUE:
68d81f40 3985 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3986 break;
3987 case ATIO_HEAD_OF_QUEUE:
68d81f40 3988 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3989 break;
3990 case ATIO_ORDERED_QUEUE:
68d81f40 3991 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3992 break;
3993 case ATIO_ACA_QUEUE:
68d81f40 3994 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3995 break;
3996 case ATIO_UNTAGGED:
68d81f40 3997 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3998 break;
3999 default:
4000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4001 "qla_target: unknown task code %x, use ORDERED instead\n",
4002 task_codes);
68d81f40 4003 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4004 break;
4005 }
4006
4007 return fcp_task_attr;
4008}
4009
5d964837 4010static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 4011 uint8_t *);
4012/*
4013 * Process context for I/O path into tcm_qla2xxx code
4014 */
51a07f84 4015static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 4016{
2d70c103
NB		 4017 scsi_qla_host_t *vha = cmd->vha;
4018 struct qla_hw_data *ha = vha->hw;
5d964837 4019 struct fc_port *sess = cmd->sess;
2d70c103
NB		 4020 struct atio_from_isp *atio = &cmd->atio;
4021 unsigned char *cdb;
4022 unsigned long flags;
4023 uint32_t data_length;
4024 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4025 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4026
e07f8f65 4027 cmd->cmd_in_wq = 0;
1eb42f96 4028 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4029
193b50b9 4030 if (cmd->aborted) {
8b2f5ff3
SN		 4031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4032 "cmd with tag %u is aborted\n",
4033 cmd->atio.u.isp24.exchange_addr);
4034 goto out_term;
4035 }
4036
a07100e0 4037 spin_lock_init(&cmd->cmd_lock);
2d70c103 4038 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4039 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4040
4041 if (atio->u.isp24.fcp_cmnd.rddata &&
4042 atio->u.isp24.fcp_cmnd.wrdata) {
4043 bidi = 1;
4044 data_dir = DMA_TO_DEVICE;
4045 } else if (atio->u.isp24.fcp_cmnd.rddata)
4046 data_dir = DMA_FROM_DEVICE;
4047 else if (atio->u.isp24.fcp_cmnd.wrdata)
4048 data_dir = DMA_TO_DEVICE;
4049 else
4050 data_dir = DMA_NONE;
4051
4052 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4053 atio->u.isp24.fcp_cmnd.task_attr);
4054 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4055 &atio->u.isp24.fcp_cmnd.add_cdb[
4056 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4057
51a07f84
NB		 4058 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4059 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4060 if (ret != 0)
4061 goto out_term;
4062 /*
4063 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4064 */
7560151b 4065 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4066 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4067 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4068 return;
4069
4070out_term:
667024a3 4071 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4072 /*
fae9eaf8
RD		 4073 * cmd has not sent to target yet, so pass NULL as the second
4074 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4075 */
1eb42f96 4076 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4077 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4078 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4079
4080 qlt_decr_num_pend_cmds(vha);
51a07f84 4081 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
82de802a 4082 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b
QT		 4083
4084 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4085 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4086 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4087}
4088
4089static void qlt_do_work(struct work_struct *work)
4090{
4091 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4092 scsi_qla_host_t *vha = cmd->vha;
4093 unsigned long flags;
4094
4095 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4096 list_del(&cmd->cmd_list);
4097 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4098
4099 __qlt_do_work(cmd);
4100}
4101
09620eeb
QT		 4102void qlt_clr_qp_table(struct scsi_qla_host *vha)
4103{
4104 unsigned long flags;
4105 struct qla_hw_data *ha = vha->hw;
4106 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4107 void *node;
4108 u64 key = 0;
4109
4110 ql_log(ql_log_info, vha, 0x706c,
4111 "User update Number of Active Qpairs %d\n",
4112 ha->tgt.num_act_qpairs);
4113
4114 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4115
4116 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4117 btree_remove64(&tgt->lun_qpair_map, key);
4118
4119 ha->base_qpair->lun_cnt = 0;
4120 for (key = 0; key < ha->max_qpairs; key++)
4121 if (ha->queue_pair_map[key])
4122 ha->queue_pair_map[key]->lun_cnt = 0;
4123
4124 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4125}
4126
e326d22a
QT		 4127static void qlt_assign_qpair(struct scsi_qla_host *vha,
4128 struct qla_tgt_cmd *cmd)
4129{
4130 struct qla_qpair *qpair, *qp;
4131 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4132 struct qla_qpair_hint *h;
4133
4134 if (vha->flags.qpairs_available) {
4135 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4136 if (unlikely(!h)) {
4137 /* spread lun to qpair ratio evently */
4138 int lcnt = 0, rc;
4139 struct scsi_qla_host *base_vha =
4140 pci_get_drvdata(vha->hw->pdev);
4141
4142 qpair = vha->hw->base_qpair;
4143 if (qpair->lun_cnt == 0) {
4144 qpair->lun_cnt++;
4145 h = qla_qpair_to_hint(tgt, qpair);
4146 BUG_ON(!h);
4147 rc = btree_insert64(&tgt->lun_qpair_map,
4148 cmd->unpacked_lun, h, GFP_ATOMIC);
4149 if (rc) {
4150 qpair->lun_cnt--;
4151 ql_log(ql_log_info, vha, 0xd037,
4152 "Unable to insert lun %llx into lun_qpair_map\n",
4153 cmd->unpacked_lun);
4154 }
4155 goto out;
4156 } else {
4157 lcnt = qpair->lun_cnt;
4158 }
4159
4160 h = NULL;
4161 list_for_each_entry(qp, &base_vha->qp_list,
4162 qp_list_elem) {
4163 if (qp->lun_cnt == 0) {
4164 qp->lun_cnt++;
4165 h = qla_qpair_to_hint(tgt, qp);
4166 BUG_ON(!h);
4167 rc = btree_insert64(&tgt->lun_qpair_map,
4168 cmd->unpacked_lun, h, GFP_ATOMIC);
4169 if (rc) {
4170 qp->lun_cnt--;
4171 ql_log(ql_log_info, vha, 0xd038,
4172 "Unable to insert lun %llx into lun_qpair_map\n",
4173 cmd->unpacked_lun);
4174 }
4175 qpair = qp;
4176 goto out;
4177 } else {
4178 if (qp->lun_cnt < lcnt) {
4179 lcnt = qp->lun_cnt;
4180 qpair = qp;
4181 continue;
4182 }
4183 }
4184 }
4185 BUG_ON(!qpair);
4186 qpair->lun_cnt++;
4187 h = qla_qpair_to_hint(tgt, qpair);
4188 BUG_ON(!h);
4189 rc = btree_insert64(&tgt->lun_qpair_map,
4190 cmd->unpacked_lun, h, GFP_ATOMIC);
4191 if (rc) {
4192 qpair->lun_cnt--;
4193 ql_log(ql_log_info, vha, 0xd039,
4194 "Unable to insert lun %llx into lun_qpair_map\n",
4195 cmd->unpacked_lun);
4196 }
4197 }
4198 } else {
4199 h = &tgt->qphints[0];
4200 }
4201out:
4202 cmd->qpair = h->qpair;
4203 cmd->se_cmd.cpuid = h->cpuid;
4204}
4205
51a07f84 4206static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4207 struct fc_port *sess,
51a07f84
NB		 4208 struct atio_from_isp *atio)
4209{
4210 struct se_session *se_sess = sess->se_sess;
4211 struct qla_tgt_cmd *cmd;
4212 int tag;
4213
4214 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4215 if (tag < 0)
4216 return NULL;
4217
4218 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4219 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4220 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4221 memcpy(&cmd->atio, atio, sizeof(*atio));
4222 cmd->state = QLA_TGT_STATE_NEW;
4223 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4224 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4225 cmd->vha = vha;
4226 cmd->se_cmd.map_tag = tag;
4227 cmd->sess = sess;
4228 cmd->loop_id = sess->loop_id;
4229 cmd->conf_compl_supported = sess->conf_compl_supported;
4230
1eb42f96 4231 cmd->trc_flags = 0;
9fce1254
KS		 4232 cmd->jiffies_at_alloc = get_jiffies_64();
4233
e326d22a
QT		 4234 cmd->unpacked_lun = scsilun_to_int(
4235 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4236 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4237 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4238 cmd->vp_idx = vha->vp_idx;
9fce1254 4239
51a07f84
NB		 4240 return cmd;
4241}
4242
2d70c103
NB		 4243/* ha->hardware_lock supposed to be held on entry */
4244static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4245 struct atio_from_isp *atio)
4246{
51a07f84 4247 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4248 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4249 struct fc_port *sess;
2d70c103 4250 struct qla_tgt_cmd *cmd;
5d964837 4251 unsigned long flags;
a4239945 4252 port_id_t id;
2d70c103
NB		 4253
4254 if (unlikely(tgt->tgt_stop)) {
667024a3 4255 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103 4256 "New command while device %p is shutting down\n", tgt);
7cf95f7e 4257 return -ENODEV;
2d70c103
NB		 4258 }
4259
a4239945
QT		 4260 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4261 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4262 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4263 if (IS_SW_RESV_ADDR(id))
4264 return -EBUSY;
4265
51a07f84 4266 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
fb35265b
QT		 4267 if (unlikely(!sess))
4268 return -EFAULT;
e52a8b45
AP		 4269
4270 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4271 * session deletion, but it's still in sess_del_work wq */
726b8548 4272 if (sess->deleted) {
83548fe2 4273 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4274 "New command while old session %p is being deleted\n",
4275 sess);
4276 return -EFAULT;
4277 }
4278
51a07f84
NB		 4279 /*
4280 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4281 */
726b8548 4282 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4283 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4284 "%s: kref_get fail, %8phC oxid %x \n",
4285 __func__, sess->port_name,
4286 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4287 return -EFAULT;
4288 }
51a07f84
NB		 4289
4290 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4291 if (!cmd) {
667024a3 4292 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4293 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4294 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4295 ha->tgt.tgt_ops->put_sess(sess);
4296 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
7cf95f7e 4297 return -EBUSY;
2d70c103
NB		 4298 }
4299
e07f8f65 4300 cmd->cmd_in_wq = 1;
1eb42f96 4301 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4302
726b8548 4303 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4304 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4305 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4306
2d70c103 4307 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4308 if (vha->flags.qpairs_available) {
4309 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4310 } else if (ha->msix_count) {
fb3269ba
QT		 4311 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4312 queue_work_on(smp_processor_id(), qla_tgt_wq,
4313 &cmd->work);
4314 else
4315 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4316 &cmd->work);
4317 } else {
4318 queue_work(qla_tgt_wq, &cmd->work);
4319 }
2d70c103 4320
82de802a 4321 return 0;
2d70c103
NB		 4322}
4323
4324/* ha->hardware_lock supposed to be held on entry */
5d964837 4325static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4326 int fn, void *iocb, int flags)
4327{
4328 struct scsi_qla_host *vha = sess->vha;
4329 struct qla_hw_data *ha = vha->hw;
4330 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4331 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4332 int res;
2d70c103
NB		 4333
4334 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4335 if (!mcmd) {
4336 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4337 "qla_target(%d): Allocation of management "
4338 "command failed, some commands and their data could "
4339 "leak\n", vha->vp_idx);
4340 return -ENOMEM;
4341 }
4342 memset(mcmd, 0, sizeof(*mcmd));
4343 mcmd->sess = sess;
4344
4345 if (iocb) {
4346 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4347 sizeof(mcmd->orig_iocb.imm_ntfy));
4348 }
4349 mcmd->tmr_func = fn;
4350 mcmd->flags = flags;
7c3f8fd1 4351 mcmd->reset_count = ha->base_qpair->chip_reset;
82de802a 4352 mcmd->qpair = ha->base_qpair;
72fcd4eb 4353 mcmd->vha = vha;
2d70c103
NB		 4354
4355 switch (fn) {
2d70c103 4356 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4357 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4358 break;
2d70c103
NB		 4359 }
4360
be92fc3f 4361 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4362 if (res != 0) {
4363 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4364 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4365 sess->vha->vp_idx, res);
4366 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4367 return -EFAULT;
4368 }
4369
4370 return 0;
4371}
4372
4373/* ha->hardware_lock supposed to be held on entry */
4374static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4375{
4376 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4377 struct qla_hw_data *ha = vha->hw;
5d964837 4378 struct fc_port *sess;
f775bd14 4379 u64 unpacked_lun;
52c82823 4380 int fn;
7560151b 4381 unsigned long flags;
2d70c103 4382
2d70c103 4383 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4384
4385 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4386 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4387 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4388 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4389
f775bd14
QT		 4390 unpacked_lun =
4391 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103 4392
fb35265b 4393 if (sess == NULL || sess->deleted)
e52a8b45
AP		 4394 return -EFAULT;
4395
2d70c103
NB		 4396 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4397}
4398
4399/* ha->hardware_lock supposed to be held on entry */
4400static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4401 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4402{
4403 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4404 struct qla_hw_data *ha = vha->hw;
4405 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4406 u64 unpacked_lun;
2d70c103
NB		 4407 int rc;
4408
4409 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4410 if (mcmd == NULL) {
4411 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4412 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4413 vha->vp_idx, __func__);
4414 return -ENOMEM;
4415 }
4416 memset(mcmd, 0, sizeof(*mcmd));
4417
4418 mcmd->sess = sess;
4419 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4420 sizeof(mcmd->orig_iocb.imm_ntfy));
4421
f775bd14
QT		 4422 unpacked_lun =
4423 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4424 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4425 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4426 mcmd->qpair = ha->base_qpair;
2d70c103 4427
be92fc3f 4428 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4429 le16_to_cpu(iocb->u.isp2x.seq_id));
4430 if (rc != 0) {
4431 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4432 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4433 vha->vp_idx, rc);
4434 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4435 return -EFAULT;
4436 }
4437
4438 return 0;
4439}
4440
4441/* ha->hardware_lock supposed to be held on entry */
4442static int qlt_abort_task(struct scsi_qla_host *vha,
4443 struct imm_ntfy_from_isp *iocb)
4444{
4445 struct qla_hw_data *ha = vha->hw;
5d964837 4446 struct fc_port *sess;
2d70c103 4447 int loop_id;
7560151b 4448 unsigned long flags;
2d70c103
NB		 4449
4450 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4451
7560151b 4452 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4453 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4454 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4455
2d70c103
NB		 4456 if (sess == NULL) {
4457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4458 "qla_target(%d): task abort for unexisting "
4459 "session\n", vha->vp_idx);
0e8cd71c 4460 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4461 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4462 }
4463
4464 return __qlt_abort_task(vha, iocb, sess);
4465}
4466
a6ca8878
AP		 4467void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4468{
726b8548
QT		 4469 if (rc != MBS_COMMAND_COMPLETE) {
4470 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4471 "%s: se_sess %p / sess %p from"
4472 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4473 " LOGO failed: %#x\n",
4474 __func__,
4475 fcport->se_sess,
4476 fcport,
4477 fcport->port_name, fcport->loop_id,
4478 fcport->d_id.b.domain, fcport->d_id.b.area,
4479 fcport->d_id.b.al_pa, rc);
4480 }
4481
4482 fcport->logout_completed = 1;
a6ca8878
AP		 4483}
4484
a6ca8878
AP		 4485/*
4486* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4487*
4488* Schedules sessions with matching port_id/loop_id but different wwn for
4489* deletion. Returns existing session with matching wwn if present.
4490* Null otherwise.
4491*/
726b8548
QT		 4492struct fc_port *
4493qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4494 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4495{
5d964837 4496 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4497 uint64_t other_wwn;
4498
b7bd104e
AP		 4499 *conflict_sess = NULL;
4500
5d964837 4501 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4502
4503 other_wwn = wwn_to_u64(other_sess->port_name);
4504
4505 if (wwn == other_wwn) {
4506 WARN_ON(sess);
4507 sess = other_sess;
4508 continue;
4509 }
4510
4511 /* find other sess with nport_id collision */
37cacc0a 4512 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4513 if (loop_id != other_sess->loop_id) {
726b8548 4514 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4515 "Invalidating sess %p loop_id %d wwn %llx.\n",
4516 other_sess, other_sess->loop_id, other_wwn);
4517
4518 /*
4519 * logout_on_delete is set by default, but another
4520 * session that has the same s_id/loop_id combo
4521 * might have cleared it when requested this session
4522 * deletion, so don't touch it
4523 */
94cff6e1 4524 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4525 } else {
4526 /*
4527 * Another wwn used to have our s_id/loop_id
b7bd104e 4528 * kill the session, but don't free the loop_id
a6ca8878 4529 */
83548fe2 4530 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4531 "Invalidating sess %p loop_id %d wwn %llx.\n",
4532 other_sess, other_sess->loop_id, other_wwn);
4533
b7bd104e 4534 other_sess->keep_nport_handle = 1;
ba743f91
QT		 4535 if (other_sess->disc_state != DSC_DELETED)
4536 *conflict_sess = other_sess;
94cff6e1 4537 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4538 }
4539 continue;
4540 }
4541
4542 /* find other sess with nport handle collision */
726b8548
QT		 4543 if ((loop_id == other_sess->loop_id) &&
4544 (loop_id != FC_NO_LOOP_ID)) {
4545 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4546 "Invalidating sess %p loop_id %d wwn %llx.\n",
4547 other_sess, other_sess->loop_id, other_wwn);
4548
4549 /* Same loop_id but different s_id
4550 * Ok to kill and logout */
94cff6e1 4551 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4552 }
4553 }
4554
4555 return sess;
4556}
4557
daddf5cf
AP		 4558/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4559static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4560{
4561 struct qla_tgt_sess_op *op;
4562 struct qla_tgt_cmd *cmd;
4563 uint32_t key;
4564 int count = 0;
8b631d87 4565 unsigned long flags;
daddf5cf
AP		 4566
4567 key = (((u32)s_id->b.domain << 16) |
4568 ((u32)s_id->b.area << 8) |
4569 ((u32)s_id->b.al_pa));
4570
8b631d87 4571 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4572 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4573 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4574
daddf5cf
AP		 4575 if (op_key == key) {
4576 op->aborted = true;
4577 count++;
4578 }
4579 }
41dc529a
QT		 4580
4581 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4582 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4583 if (op_key == key) {
4584 op->aborted = true;
4585 count++;
4586 }
4587 }
4588
daddf5cf
AP		 4589 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4590 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4591 if (cmd_key == key) {
193b50b9 4592 cmd->aborted = 1;
daddf5cf
AP		 4593 count++;
4594 }
4595 }
8b631d87 4596 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4597
4598 return count;
4599}
4600
9cd883f0
QT		 4601static int qlt_handle_login(struct scsi_qla_host *vha,
4602 struct imm_ntfy_from_isp *iocb)
4603{
4604 struct fc_port *sess = NULL, *conflict_sess = NULL;
4605 uint64_t wwn;
4606 port_id_t port_id;
4607 uint16_t loop_id, wd3_lo;
4608 int res = 0;
4609 struct qlt_plogi_ack_t *pla;
4610 unsigned long flags;
4611
4612 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4613
4614 port_id.b.domain = iocb->u.isp24.port_id[2];
4615 port_id.b.area = iocb->u.isp24.port_id[1];
4616 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4617 port_id.b.rsvd_1 = 0;
4618
4619 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4620
4621 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4622 abort_cmds_for_s_id(vha, &port_id);
4623
4624 if (wwn) {
4625 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4626 sess = qlt_find_sess_invalidate_other(vha, wwn,
4627 port_id, loop_id, &conflict_sess);
4628 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4629 }
4630
4631 if (IS_SW_RESV_ADDR(port_id)) {
4632 res = 1;
4633 goto out;
4634 }
4635
4636 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4637 if (!pla) {
4638 qlt_send_term_imm_notif(vha, iocb, 1);
4639 goto out;
4640 }
4641
4642 if (conflict_sess) {
4643 conflict_sess->login_gen++;
4644 qlt_plogi_ack_link(vha, pla, conflict_sess,
4645 QLT_PLOGI_LINK_CONFLICT);
4646 }
4647
4648 if (!sess) {
4649 pla->ref_count++;
4650 ql_dbg(ql_dbg_disc, vha, 0xffff,
4651 "%s %d %8phC post new sess\n",
4652 __func__, __LINE__, iocb->u.isp24.port_name);
a4239945
QT		 4653 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4654 qla24xx_post_newsess_work(vha, &port_id,
4655 iocb->u.isp24.port_name,
4656 iocb->u.isp24.u.plogi.node_name,
4657 pla, FC4_TYPE_UNKNOWN);
4658 else
4659 qla24xx_post_newsess_work(vha, &port_id,
4660 iocb->u.isp24.port_name, NULL,
4661 pla, FC4_TYPE_UNKNOWN);
4662
9cd883f0
QT		 4663 goto out;
4664 }
4665
4666 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4667 sess->d_id = port_id;
4668 sess->login_gen++;
4669
4670 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4671 sess->fw_login_state = DSC_LS_PRLI_PEND;
4672 sess->local = 0;
4673 sess->loop_id = loop_id;
4674 sess->d_id = port_id;
4675 sess->fw_login_state = DSC_LS_PRLI_PEND;
4676 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4677
4678 if (wd3_lo & BIT_7)
4679 sess->conf_compl_supported = 1;
4680
4681 if ((wd3_lo & BIT_4) == 0)
4682 sess->port_type = FCT_INITIATOR;
4683 else
4684 sess->port_type = FCT_TARGET;
4685
4686 } else
4687 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4688
4689
4690 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4691 "%s %d %8phC DS %d\n",
4692 __func__, __LINE__, sess->port_name, sess->disc_state);
4693
4694 switch (sess->disc_state) {
4695 case DSC_DELETED:
4696 qlt_plogi_ack_unref(vha, pla);
4697 break;
4698
4699 default:
4700 /*
4701 * Under normal circumstances we want to release nport handle
4702 * during LOGO process to avoid nport handle leaks inside FW.
4703 * The exception is when LOGO is done while another PLOGI with
4704 * the same nport handle is waiting as might be the case here.
4705 * Note: there is always a possibily of a race where session
4706 * deletion has already started for other reasons (e.g. ACL
4707 * removal) and now PLOGI arrives:
4708 * 1. if PLOGI arrived in FW after nport handle has been freed,
4709 * FW must have assigned this PLOGI a new/same handle and we
4710 * can proceed ACK'ing it as usual when session deletion
4711 * completes.
4712 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4713 * bit reached it, the handle has now been released. We'll
4714 * get an error when we ACK this PLOGI. Nothing will be sent
4715 * back to initiator. Initiator should eventually retry
4716 * PLOGI and situation will correct itself.
4717 */
4718 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4719 (sess->d_id.b24 == port_id.b24));
4720
4721 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4722 "%s %d %8phC post del sess\n",
4723 __func__, __LINE__, sess->port_name);
4724
4725
d8630bb9 4726 qlt_schedule_sess_for_deletion(sess);
9cd883f0
QT		 4727 break;
4728 }
4729out:
4730 return res;
4731}
4732
2d70c103
NB		 4733/*
4734 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4735 */
4736static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4737 struct imm_ntfy_from_isp *iocb)
4738{
a6ca8878 4739 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4740 struct qla_hw_data *ha = vha->hw;
5d964837 4741 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4742 uint64_t wwn;
4743 port_id_t port_id;
4744 uint16_t loop_id;
4745 uint16_t wd3_lo;
2d70c103 4746 int res = 0;
9cd883f0 4747 unsigned long flags;
2d70c103 4748
a6ca8878
AP		 4749 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4750
4751 port_id.b.domain = iocb->u.isp24.port_id[2];
4752 port_id.b.area = iocb->u.isp24.port_id[1];
4753 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4754 port_id.b.rsvd_1 = 0;
4755
4756 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4757
726b8548
QT		 4758 ql_dbg(ql_dbg_disc, vha, 0xf026,
4759 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4760 vha->vp_idx, iocb->u.isp24.port_id[2],
4761 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4762 iocb->u.isp24.status_subcode, loop_id,
4763 iocb->u.isp24.port_name);
2d70c103 4764
a6ca8878
AP		 4765 /* res = 1 means ack at the end of thread
4766 * res = 0 means ack async/later.
4767 */
2d70c103
NB		 4768 switch (iocb->u.isp24.status_subcode) {
4769 case ELS_PLOGI:
9cd883f0
QT		 4770 res = qlt_handle_login(vha, iocb);
4771 break;
a6ca8878 4772
9cd883f0
QT		 4773 case ELS_PRLI:
4774 if (N2N_TOPO(ha)) {
4775 sess = qla2x00_find_fcport_by_wwpn(vha,
4776 iocb->u.isp24.port_name, 1);
726b8548 4777
9cd883f0
QT		 4778 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4779 ql_dbg(ql_dbg_disc, vha, 0xffff,
4780 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4781 __func__, __LINE__,
4782 iocb->u.isp24.port_name);
4783 qlt_send_term_imm_notif(vha, iocb, 1);
4784 break;
4785 }
726b8548 4786
9cd883f0 4787 res = qlt_handle_login(vha, iocb);
726b8548
QT		 4788 break;
4789 }
4790
a4239945
QT		 4791 if (IS_SW_RESV_ADDR(port_id)) {
4792 res = 1;
4793 break;
4794 }
4795
a6ca8878
AP		 4796 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4797
7560151b
QT		 4798 if (wwn) {
4799 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4800 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4801 loop_id, &conflict_sess);
7560151b
QT		 4802 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4803 }
b7bd104e
AP		 4804
4805 if (conflict_sess) {
5ef696aa
QT		 4806 switch (conflict_sess->disc_state) {
4807 case DSC_DELETED:
4808 case DSC_DELETE_PEND:
4809 break;
4810 default:
4811 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4812 "PRLI with conflicting sess %p port %8phC\n",
4813 conflict_sess, conflict_sess->port_name);
4814 conflict_sess->fw_login_state =
4815 DSC_LS_PORT_UNAVAIL;
4816 qlt_send_term_imm_notif(vha, iocb, 1);
4817 res = 0;
4818 break;
4819 }
b7bd104e 4820 }
a6ca8878
AP		 4821
4822 if (sess != NULL) {
a4239945 4823 bool delete = false;
82abdcaf
QT		 4824 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4825 switch (sess->fw_login_state) {
a4239945 4826 case DSC_LS_PLOGI_PEND:
82abdcaf
QT		 4827 case DSC_LS_PLOGI_COMP:
4828 case DSC_LS_PRLI_COMP:
4829 break;
4830 default:
a4239945
QT		 4831 delete = true;
4832 break;
4833 }
4834
4835 switch (sess->disc_state) {
4836 case DSC_LOGIN_PEND:
4837 case DSC_GPDB:
a4239945
QT		 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;
4860 break;
4861 }
4862
4863 /*
4864 * This shouldn't happen under normal circumstances,
4865 * since we have deleted the old session during PLOGI
4866 */
df673274 4867 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4868 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4869 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4870
4871 sess->local = 0;
4872 sess->loop_id = loop_id;
37cacc0a 4873 sess->d_id = port_id;
726b8548 4874 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4875
4876 if (wd3_lo & BIT_7)
4877 sess->conf_compl_supported = 1;
4878
726b8548
QT		 4879 if ((wd3_lo & BIT_4) == 0)
4880 sess->port_type = FCT_INITIATOR;
4881 else
4882 sess->port_type = FCT_TARGET;
82abdcaf
QT		 4883
4884 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
df673274
AP		 4885 }
4886 res = 1; /* send notify ack */
4887
4888 /* Make session global (not used in fabric mode) */
4889 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4890 if (sess) {
83548fe2 4891 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4892 "%s %d %8phC post nack\n",
4893 __func__, __LINE__, sess->port_name);
4894 qla24xx_post_nack_work(vha, sess, iocb,
4895 SRB_NACK_PRLI);
4896 res = 0;
4897 } else {
4898 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4899 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4900 qla2xxx_wake_dpc(vha);
4901 }
a6ca8878 4902 } else {
726b8548 4903 if (sess) {
83548fe2 4904 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4905 "%s %d %8phC post nack\n",
4906 __func__, __LINE__, sess->port_name);
726b8548
QT		 4907 qla24xx_post_nack_work(vha, sess, iocb,
4908 SRB_NACK_PRLI);
4909 res = 0;
4910 }
4911 }
a6ca8878
AP		 4912 break;
4913
41dc529a
QT		 4914 case ELS_TPRLO:
4915 if (le16_to_cpu(iocb->u.isp24.flags) &
4916 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4917 loop_id = 0xFFFF;
4918 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4919 res = 1;
4920 break;
4921 }
81881861 4922 /* fall through */
2d70c103
NB		 4923 case ELS_LOGO:
4924 case ELS_PRLO:
726b8548
QT		 4925 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4926 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4927 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4928
4929 if (sess) {
4930 sess->login_gen++;
4931 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4932 sess->logo_ack_needed = 1;
4933 memcpy(sess->iocb, iocb, IOCB_SIZE);
4934 }
4935
2d70c103 4936 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4937
83548fe2 4938 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4939 "%s: logo %llx res %d sess %p ",
4940 __func__, wwn, res, sess);
4941 if (res == 0) {
41dc529a
QT		 4942 /*
4943 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4944 * for LOGO_ACK & sess delete
4945 */
726b8548
QT		 4946 BUG_ON(!sess);
4947 res = 0;
4948 } else {
41dc529a 4949 /* cmd did not go to upper layer. */
726b8548 4950 if (sess) {
d8630bb9 4951 qlt_schedule_sess_for_deletion(sess);
726b8548
QT		 4952 res = 0;
4953 }
4954 /* else logo will be ack */
4955 }
2d70c103
NB		 4956 break;
4957 case ELS_PDISC:
4958 case ELS_ADISC:
4959 {
0e8cd71c 4960 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4961 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 4962 qlt_send_notify_ack(ha->base_qpair,
4963 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 4964 tgt->link_reinit_iocb_pending = 0;
4965 }
726b8548
QT		 4966
4967 sess = qla2x00_find_fcport_by_wwpn(vha,
4968 iocb->u.isp24.port_name, 1);
4969 if (sess) {
83548fe2 4970 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4971 "sess %p lid %d|%d DS %d LS %d\n",
4972 sess, sess->loop_id, loop_id,
4973 sess->disc_state, sess->fw_login_state);
4974 }
4975
2d70c103
NB		 4976 res = 1; /* send notify ack */
4977 break;
4978 }
4979
a6ca8878 4980 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4981 default:
4982 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4983 "qla_target(%d): Unsupported ELS command %x "
4984 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
4985 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
4986 break;
4987 }
4988
9cd883f0
QT		 4989 ql_dbg(ql_dbg_disc, vha, 0xf026,
4990 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
4991 vha->vp_idx, iocb->u.isp24.status_subcode, res);
4992
2d70c103
NB		 4993 return res;
4994}
4995
2d70c103
NB		 4996/*
4997 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4998 */
4999static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5000 struct imm_ntfy_from_isp *iocb)
5001{
5002 struct qla_hw_data *ha = vha->hw;
5003 uint32_t add_flags = 0;
5004 int send_notify_ack = 1;
5005 uint16_t status;
5006
5007 status = le16_to_cpu(iocb->u.isp2x.status);
5008 switch (status) {
5009 case IMM_NTFY_LIP_RESET:
5010 {
5011 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5012 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5013 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5014 iocb->u.isp24.status_subcode);
5015
5016 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5017 send_notify_ack = 0;
5018 break;
5019 }
5020
5021 case IMM_NTFY_LIP_LINK_REINIT:
5022 {
0e8cd71c 5023 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5025 "qla_target(%d): LINK REINIT (loop %#x, "
5026 "subcode %x)\n", vha->vp_idx,
5027 le16_to_cpu(iocb->u.isp24.nport_handle),
5028 iocb->u.isp24.status_subcode);
5029 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5030 qlt_send_notify_ack(ha->base_qpair,
5031 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5032 }
5033 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5034 tgt->link_reinit_iocb_pending = 1;
5035 /*
5036 * QLogic requires to wait after LINK REINIT for possible
5037 * PDISC or ADISC ELS commands
5038 */
5039 send_notify_ack = 0;
5040 break;
5041 }
5042
5043 case IMM_NTFY_PORT_LOGOUT:
5044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5045 "qla_target(%d): Port logout (loop "
5046 "%#x, subcode %x)\n", vha->vp_idx,
5047 le16_to_cpu(iocb->u.isp24.nport_handle),
5048 iocb->u.isp24.status_subcode);
5049
5050 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5051 send_notify_ack = 0;
5052 /* The sessions will be cleared in the callback, if needed */
5053 break;
5054
5055 case IMM_NTFY_GLBL_TPRLO:
5056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5057 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5058 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5059 send_notify_ack = 0;
5060 /* The sessions will be cleared in the callback, if needed */
5061 break;
5062
5063 case IMM_NTFY_PORT_CONFIG:
5064 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5065 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5066 status);
5067 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5068 send_notify_ack = 0;
5069 /* The sessions will be cleared in the callback, if needed */
5070 break;
5071
5072 case IMM_NTFY_GLBL_LOGO:
5073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5074 "qla_target(%d): Link failure detected\n",
5075 vha->vp_idx);
5076 /* I_T nexus loss */
5077 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5078 send_notify_ack = 0;
5079 break;
5080
5081 case IMM_NTFY_IOCB_OVERFLOW:
5082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5083 "qla_target(%d): Cannot provide requested "
5084 "capability (IOCB overflowed the immediate notify "
5085 "resource count)\n", vha->vp_idx);
5086 break;
5087
5088 case IMM_NTFY_ABORT_TASK:
5089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5090 "qla_target(%d): Abort Task (S %08x I %#x -> "
5091 "L %#x)\n", vha->vp_idx,
5092 le16_to_cpu(iocb->u.isp2x.seq_id),
5093 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5094 le16_to_cpu(iocb->u.isp2x.lun));
5095 if (qlt_abort_task(vha, iocb) == 0)
5096 send_notify_ack = 0;
5097 break;
5098
5099 case IMM_NTFY_RESOURCE:
5100 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5101 "qla_target(%d): Out of resources, host %ld\n",
5102 vha->vp_idx, vha->host_no);
5103 break;
5104
5105 case IMM_NTFY_MSG_RX:
5106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5107 "qla_target(%d): Immediate notify task %x\n",
5108 vha->vp_idx, iocb->u.isp2x.task_flags);
5109 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5110 send_notify_ack = 0;
5111 break;
5112
5113 case IMM_NTFY_ELS:
5114 if (qlt_24xx_handle_els(vha, iocb) == 0)
5115 send_notify_ack = 0;
5116 break;
2d70c103
NB		 5117 default:
5118 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5119 "qla_target(%d): Received unknown immediate "
5120 "notify status %x\n", vha->vp_idx, status);
5121 break;
5122 }
5123
5124 if (send_notify_ack)
82de802a
QT		 5125 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5126 0, 0);
2d70c103
NB		 5127}
5128
5129/*
5130 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5131 * This function sends busy to ISP 2xxx or 24xx.
5132 */
82de802a 5133static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5134 struct atio_from_isp *atio, uint16_t status)
5135{
82de802a 5136 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5137 struct ctio7_to_24xx *ctio24;
5138 struct qla_hw_data *ha = vha->hw;
5139 request_t *pkt;
5d964837 5140 struct fc_port *sess = NULL;
7560151b 5141 unsigned long flags;
f7e761f5 5142 u16 temp;
2d70c103 5143
7560151b 5144 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5145 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5146 atio->u.isp24.fcp_hdr.s_id);
7560151b 5147 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5148 if (!sess) {
82de802a 5149 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5150 return 0;
2d70c103
NB		 5151 }
5152 /* Sending marker isn't necessary, since we called from ISR */
5153
82de802a 5154 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5155 if (!pkt) {
667024a3 5156 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5157 "qla_target(%d): %s failed: unable to allocate "
5158 "request packet", vha->vp_idx, __func__);
33e79977 5159 return -ENOMEM;
2d70c103
NB		 5160 }
5161
60a9eadb 5162 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5163 pkt->entry_count = 1;
5164 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5165
5166 ctio24 = (struct ctio7_to_24xx *)pkt;
5167 ctio24->entry_type = CTIO_TYPE7;
5168 ctio24->nport_handle = sess->loop_id;
ad950360 5169 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5170 ctio24->vp_index = vha->vp_idx;
5171 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5172 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5173 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5174 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5175 temp = (atio->u.isp24.attr << 9) |
2d70c103 5176 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5177 CTIO7_FLAGS_DONT_RET_CTIO;
5178 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5179 /*
5180 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5181 * if the explicit conformation is used.
5182 */
5183 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5184 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5185 /* Memory Barrier */
5186 wmb();
8abfa9e2
QT		 5187 if (qpair->reqq_start_iocbs)
5188 qpair->reqq_start_iocbs(qpair);
5189 else
5190 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5191 return 0;
5192}
5193
5194/*
5195 * This routine is used to allocate a command for either a QFull condition
5196 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5197 * out previously.
5198 */
5199static void
5200qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5201 struct atio_from_isp *atio, uint16_t status, int qfull)
5202{
5203 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5204 struct qla_hw_data *ha = vha->hw;
5d964837 5205 struct fc_port *sess;
33e79977
QT		 5206 struct se_session *se_sess;
5207 struct qla_tgt_cmd *cmd;
5208 int tag;
82de802a 5209 unsigned long flags;
33e79977
QT		 5210
5211 if (unlikely(tgt->tgt_stop)) {
5212 ql_dbg(ql_dbg_io, vha, 0x300a,
5213 "New command while device %p is shutting down\n", tgt);
5214 return;
5215 }
5216
5217 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5218 vha->hw->tgt.num_qfull_cmds_dropped++;
5219 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5220 vha->qla_stats.stat_max_qfull_cmds_dropped)
5221 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5222 vha->hw->tgt.num_qfull_cmds_dropped;
5223
5224 ql_dbg(ql_dbg_io, vha, 0x3068,
5225 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5226 vha->vp_idx, __func__,
5227 vha->hw->tgt.num_qfull_cmds_dropped);
5228
5229 qlt_chk_exch_leak_thresh_hold(vha);
5230 return;
5231 }
5232
5233 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5234 (vha, atio->u.isp24.fcp_hdr.s_id);
5235 if (!sess)
5236 return;
5237
5238 se_sess = sess->se_sess;
5239
5240 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5241 if (tag < 0)
5242 return;
5243
5244 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5245 if (!cmd) {
5246 ql_dbg(ql_dbg_io, vha, 0x3009,
5247 "qla_target(%d): %s: Allocation of cmd failed\n",
5248 vha->vp_idx, __func__);
5249
5250 vha->hw->tgt.num_qfull_cmds_dropped++;
5251 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5252 vha->qla_stats.stat_max_qfull_cmds_dropped)
5253 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5254 vha->hw->tgt.num_qfull_cmds_dropped;
5255
5256 qlt_chk_exch_leak_thresh_hold(vha);
5257 return;
5258 }
5259
5260 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5261
5262 qlt_incr_num_pend_cmds(vha);
5263 INIT_LIST_HEAD(&cmd->cmd_list);
5264 memcpy(&cmd->atio, atio, sizeof(*atio));
5265
5266 cmd->tgt = vha->vha_tgt.qla_tgt;
5267 cmd->vha = vha;
7c3f8fd1 5268 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5269 cmd->q_full = 1;
82de802a 5270 cmd->qpair = ha->base_qpair;
33e79977
QT		 5271
5272 if (qfull) {
5273 cmd->q_full = 1;
5274 /* NOTE: borrowing the state field to carry the status */
5275 cmd->state = status;
5276 } else
5277 cmd->term_exchg = 1;
5278
82de802a 5279 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5280 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5281
5282 vha->hw->tgt.num_qfull_cmds_alloc++;
5283 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5284 vha->qla_stats.stat_max_qfull_cmds_alloc)
5285 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5286 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5287 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5288}
5289
5290int
82de802a 5291qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5292{
82de802a 5293 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5294 struct qla_hw_data *ha = vha->hw;
5295 unsigned long flags;
5296 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5297 struct list_head free_list, q_full_list;
33e79977
QT		 5298 int rc = 0;
5299
5300 if (list_empty(&ha->tgt.q_full_list))
5301 return 0;
5302
5303 INIT_LIST_HEAD(&free_list);
82de802a 5304 INIT_LIST_HEAD(&q_full_list);
33e79977 5305
82de802a 5306 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5307 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5308 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5309 return 0;
5310 }
5311
82de802a
QT		 5312 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5313 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5314
5315 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5316 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5317 if (cmd->q_full)
5318 /* cmd->state is a borrowed field to hold status */
82de802a 5319 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5320 else if (cmd->term_exchg)
82de802a 5321 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5322
5323 if (rc == -ENOMEM)
5324 break;
5325
5326 if (cmd->q_full)
5327 ql_dbg(ql_dbg_io, vha, 0x3006,
5328 "%s: busy sent for ox_id[%04x]\n", __func__,
5329 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5330 else if (cmd->term_exchg)
5331 ql_dbg(ql_dbg_io, vha, 0x3007,
5332 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5333 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5334 else
5335 ql_dbg(ql_dbg_io, vha, 0x3008,
5336 "%s: Unexpected cmd in QFull list %p\n", __func__,
5337 cmd);
5338
5339 list_del(&cmd->cmd_list);
5340 list_add_tail(&cmd->cmd_list, &free_list);
5341
5342 /* piggy back on hardware_lock for protection */
5343 vha->hw->tgt.num_qfull_cmds_alloc--;
5344 }
82de802a 5345 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5346
5347 cmd = NULL;
5348
5349 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5350 list_del(&cmd->cmd_list);
5351 /* This cmd was never sent to TCM. There is no need
5352 * to schedule free or call free_cmd
5353 */
5354 qlt_free_cmd(cmd);
5355 }
82de802a
QT		 5356
5357 if (!list_empty(&q_full_list)) {
5358 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5359 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5360 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5361 }
5362
33e79977
QT		 5363 return rc;
5364}
5365
5366static void
82de802a
QT		 5367qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5368 uint16_t status)
33e79977
QT		 5369{
5370 int rc = 0;
82de802a 5371 struct scsi_qla_host *vha = qpair->vha;
33e79977 5372
82de802a 5373 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5374 if (rc == -ENOMEM)
5375 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5376}
5377
5378static int
82de802a
QT		 5379qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5380 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5381{
5382 struct qla_hw_data *ha = vha->hw;
8b666809 5383 unsigned long flags;
33e79977
QT		 5384
5385 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5386 return 0;
5387
8b666809
QT		 5388 if (!ha_locked)
5389 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5390 qlt_send_busy(qpair, atio, qla_sam_status);
8b666809
QT		 5391 if (!ha_locked)
5392 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5393
33e79977 5394 return 1;
2d70c103
NB		 5395}
5396
5397/* ha->hardware_lock supposed to be held on entry */
5398/* called via callback from qla2xxx */
5399static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5400 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5401{
5402 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5403 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5404 int rc;
7cf95f7e 5405 unsigned long flags = 0;
2d70c103
NB		 5406
5407 if (unlikely(tgt == NULL)) {
ec7193e2 5408 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5409 "ATIO pkt, but no tgt (ha %p)", ha);
5410 return;
5411 }
2d70c103
NB		 5412 /*
5413 * In tgt_stop mode we also should allow all requests to pass.
5414 * Otherwise, some commands can stuck.
5415 */
5416
2f424b9b 5417 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5418
5419 switch (atio->u.raw.entry_type) {
5420 case ATIO_TYPE7:
2d70c103
NB		 5421 if (unlikely(atio->u.isp24.exchange_addr ==
5422 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5423 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5424 "qla_target(%d): ATIO_TYPE7 "
5425 "received with UNKNOWN exchange address, "
5426 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5427 if (!ha_locked)
5428 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5429 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
2f424b9b 5430 if (!ha_locked)
82de802a
QT		 5431 spin_unlock_irqrestore(&ha->hardware_lock,
5432 flags);
2d70c103
NB		 5433 break;
5434 }
33e79977 5435
33e79977 5436 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5437 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5438 atio, ha_locked);
33e79977 5439 if (rc != 0) {
2f424b9b 5440 tgt->atio_irq_cmd_count--;
33e79977
QT		 5441 return;
5442 }
2d70c103 5443 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5444 } else {
2d70c103 5445 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5446 }
2d70c103 5447 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5448 if (!ha_locked)
5449 spin_lock_irqsave(&ha->hardware_lock, flags);
5450 switch (rc) {
5451 case -ENODEV:
5452 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5453 "qla_target: Unable to send command to target\n");
5454 break;
5455 case -EBADF:
5456 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5457 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
82de802a
QT		 5458 qlt_send_term_exchange(ha->base_qpair, NULL,
5459 atio, 1, 0);
7cf95f7e
QT		 5460 break;
5461 case -EBUSY:
5462 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5463 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5464 vha->vp_idx);
5465 qlt_send_busy(ha->base_qpair, atio,
5466 tc_sam_status);
5467 break;
5468 default:
5469 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5470 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5471 vha->vp_idx);
5472 qlt_send_busy(ha->base_qpair, atio,
5473 qla_sam_status);
5474 break;
2d70c103 5475 }
7cf95f7e
QT		 5476 if (!ha_locked)
5477 spin_unlock_irqrestore(&ha->hardware_lock,
5478 flags);
2d70c103
NB		 5479 }
5480 break;
5481
5482 case IMMED_NOTIFY_TYPE:
5483 {
5484 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5485 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5486 "qla_target(%d): Received ATIO packet %x "
5487 "with error status %x\n", vha->vp_idx,
5488 atio->u.raw.entry_type,
5489 atio->u.isp2x.entry_status);
5490 break;
5491 }
5492 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5493
5494 if (!ha_locked)
5495 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5496 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5497 if (!ha_locked)
5498 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5499 break;
5500 }
5501
5502 default:
5503 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5504 "qla_target(%d): Received unknown ATIO atio "
5505 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5506 break;
5507 }
5508
2f424b9b 5509 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5510}
5511
5512/* ha->hardware_lock supposed to be held on entry */
5513/* called via callback from qla2xxx */
82de802a
QT		 5514static void qlt_response_pkt(struct scsi_qla_host *vha,
5515 struct rsp_que *rsp, response_t *pkt)
2d70c103 5516{
0e8cd71c 5517 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5518
5519 if (unlikely(tgt == NULL)) {
5520 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5521 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5522 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5523 return;
5524 }
5525
2d70c103
NB		 5526 /*
5527 * In tgt_stop mode we also should allow all requests to pass.
5528 * Otherwise, some commands can stuck.
5529 */
5530
2d70c103 5531 switch (pkt->entry_type) {
f83adb61 5532 case CTIO_CRC2:
2d70c103
NB		 5533 case CTIO_TYPE7:
5534 {
5535 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
82de802a 5536 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5537 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5538 entry);
5539 break;
5540 }
5541
5542 case ACCEPT_TGT_IO_TYPE:
5543 {
5544 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5545 int rc;
2d70c103 5546 if (atio->u.isp2x.status !=
ad950360 5547 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5548 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5549 "qla_target(%d): ATIO with error "
5550 "status %x received\n", vha->vp_idx,
5551 le16_to_cpu(atio->u.isp2x.status));
5552 break;
5553 }
2d70c103 5554
82de802a 5555 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5556 if (rc != 0)
33e79977 5557 return;
33e79977 5558
2d70c103
NB		 5559 rc = qlt_handle_cmd_for_atio(vha, atio);
5560 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5561 switch (rc) {
5562 case -ENODEV:
5563 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5564 "qla_target: Unable to send command to target\n");
5565 break;
5566 case -EBADF:
5567 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5568 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5569 qlt_send_term_exchange(rsp->qpair, NULL,
5570 atio, 1, 0);
5571 break;
5572 case -EBUSY:
5573 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5574 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5575 vha->vp_idx);
5576 qlt_send_busy(rsp->qpair, atio,
5577 tc_sam_status);
5578 break;
5579 default:
5580 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5581 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5582 vha->vp_idx);
5583 qlt_send_busy(rsp->qpair, atio,
5584 qla_sam_status);
5585 break;
2d70c103
NB		 5586 }
5587 }
5588 }
5589 break;
5590
5591 case CONTINUE_TGT_IO_TYPE:
5592 {
5593 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5594 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5595 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5596 entry);
5597 break;
5598 }
5599
5600 case CTIO_A64_TYPE:
5601 {
5602 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5603 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5604 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5605 entry);
5606 break;
5607 }
5608
5609 case IMMED_NOTIFY_TYPE:
5610 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5611 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5612 break;
5613
5614 case NOTIFY_ACK_TYPE:
5615 if (tgt->notify_ack_expected > 0) {
5616 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5617 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5618 "NOTIFY_ACK seq %08x status %x\n",
5619 le16_to_cpu(entry->u.isp2x.seq_id),
5620 le16_to_cpu(entry->u.isp2x.status));
5621 tgt->notify_ack_expected--;
5622 if (entry->u.isp2x.status !=
ad950360 5623 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5624 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5625 "qla_target(%d): NOTIFY_ACK "
5626 "failed %x\n", vha->vp_idx,
5627 le16_to_cpu(entry->u.isp2x.status));
5628 }
5629 } else {
5630 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5631 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5632 vha->vp_idx);
5633 }
5634 break;
5635
5636 case ABTS_RECV_24XX:
5637 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5638 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5639 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5640 break;
5641
5642 case ABTS_RESP_24XX:
5643 if (tgt->abts_resp_expected > 0) {
5644 struct abts_resp_from_24xx_fw *entry =
5645 (struct abts_resp_from_24xx_fw *)pkt;
5646 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5647 "ABTS_RESP_24XX: compl_status %x\n",
5648 entry->compl_status);
5649 tgt->abts_resp_expected--;
5650 if (le16_to_cpu(entry->compl_status) !=
5651 ABTS_RESP_COMPL_SUCCESS) {
5652 if ((entry->error_subcode1 == 0x1E) &&
5653 (entry->error_subcode2 == 0)) {
5654 /*
5655 * We've got a race here: aborted
5656 * exchange not terminated, i.e.
5657 * response for the aborted command was
5658 * sent between the abort request was
5659 * received and processed.
5660 * Unfortunately, the firmware has a
5661 * silly requirement that all aborted
5662 * exchanges must be explicitely
5663 * terminated, otherwise it refuses to
5664 * send responses for the abort
5665 * requests. So, we have to
5666 * (re)terminate the exchange and retry
5667 * the abort response.
5668 */
5669 qlt_24xx_retry_term_exchange(vha,
5670 entry);
5671 } else
5672 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5673 "qla_target(%d): ABTS_RESP_24XX "
5674 "failed %x (subcode %x:%x)",
5675 vha->vp_idx, entry->compl_status,
5676 entry->error_subcode1,
5677 entry->error_subcode2);
5678 }
5679 } else {
5680 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5681 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5682 "received\n", vha->vp_idx);
5683 }
5684 break;
5685
5686 default:
5687 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5688 "qla_target(%d): Received unknown response pkt "
5689 "type %x\n", vha->vp_idx, pkt->entry_type);
5690 break;
5691 }
5692
2d70c103
NB		 5693}
5694
5695/*
5696 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5697 */
5698void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5699 uint16_t *mailbox)
5700{
5701 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5702 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5703 int login_code;
2d70c103 5704
3a33dc95 5705 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5706 return;
5707
2d70c103
NB		 5708 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5709 IS_QLA2100(ha))
5710 return;
5711 /*
5712 * In tgt_stop mode we also should allow all requests to pass.
5713 * Otherwise, some commands can stuck.
5714 */
5715
2d70c103
NB		 5716
5717 switch (code) {
5718 case MBA_RESET: /* Reset */
5719 case MBA_SYSTEM_ERR: /* System Error */
5720 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5721 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5722 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5723 "qla_target(%d): System error async event %#x "
6efb3c0a 5724 "occurred", vha->vp_idx, code);
2d70c103
NB		 5725 break;
5726 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5727 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5728 break;
5729
5730 case MBA_LOOP_UP:
5731 {
5732 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5733 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5734 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5735 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5736 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5737 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5738 qlt_send_notify_ack(ha->base_qpair,
5739 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5740 0, 0, 0, 0, 0, 0);
5741 tgt->link_reinit_iocb_pending = 0;
5742 }
5743 break;
5744 }
5745
5746 case MBA_LIP_OCCURRED:
5747 case MBA_LOOP_DOWN:
5748 case MBA_LIP_RESET:
5749 case MBA_RSCN_UPDATE:
5750 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5751 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5752 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5753 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5754 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5755 break;
5756
ead03855 5757 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5758 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5759 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5760 vha->vp_idx,
5761 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5762 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5763
5764 if (le16_to_cpu(mailbox[3]) == 1) {
5765 /* exchange starvation. */
5766 vha->hw->exch_starvation++;
5767 if (vha->hw->exch_starvation > 5) {
83548fe2 5768 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5769 "Exchange starvation-. Resetting RISC\n");
5770
5771 vha->hw->exch_starvation = 0;
5772 if (IS_P3P_TYPE(vha->hw))
5773 set_bit(FCOE_CTX_RESET_NEEDED,
5774 &vha->dpc_flags);
5775 else
5776 set_bit(ISP_ABORT_NEEDED,
5777 &vha->dpc_flags);
5778 qla2xxx_wake_dpc(vha);
5779 }
5780 }
5781 break;
5782
2d70c103
NB		 5783 case MBA_PORT_UPDATE:
5784 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5785 "qla_target(%d): Port update async event %#x "
6efb3c0a 5786 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5787 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5788 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5789 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5790
5791 login_code = le16_to_cpu(mailbox[2]);
ead03855 5792 if (login_code == 0x4) {
2d70c103
NB		 5793 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5794 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5795 vha->hw->exch_starvation = 0;
5796 } else if (login_code == 0x7)
2d70c103
NB		 5797 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5798 "Async MB 2: Port Logged Out\n");
5799 break;
2d70c103 5800 default:
2d70c103
NB		 5801 break;
5802 }
5803
2d70c103
NB		 5804}
5805
5806static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5807 uint16_t loop_id)
5808{
726b8548 5809 fc_port_t *fcport, *tfcp, *del;
2d70c103 5810 int rc;
726b8548
QT		 5811 unsigned long flags;
5812 u8 newfcport = 0;
2d70c103 5813
063b36d6 5814 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 5815 if (!fcport) {
5816 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5817 "qla_target(%d): Allocation of tmp FC port failed",
5818 vha->vp_idx);
5819 return NULL;
5820 }
5821
2d70c103
NB		 5822 fcport->loop_id = loop_id;
5823
15f30a57 5824 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5825 if (rc != QLA_SUCCESS) {
5826 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5827 "qla_target(%d): Failed to retrieve fcport "
5828 "information -- get_port_database() returned %x "
5829 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5830 kfree(fcport);
5831 return NULL;
5832 }
5833
726b8548
QT		 5834 del = NULL;
5835 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5836 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5837
5838 if (tfcp) {
5839 tfcp->d_id = fcport->d_id;
5840 tfcp->port_type = fcport->port_type;
5841 tfcp->supported_classes = fcport->supported_classes;
5842 tfcp->flags |= fcport->flags;
76f9a2dd 5843 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 5844
5845 del = fcport;
5846 fcport = tfcp;
5847 } else {
5848 if (vha->hw->current_topology == ISP_CFG_F)
5849 fcport->flags |= FCF_FABRIC_DEVICE;
5850
5851 list_add_tail(&fcport->list, &vha->vp_fcports);
5852 if (!IS_SW_RESV_ADDR(fcport->d_id))
5853 vha->fcport_count++;
5854 fcport->login_gen++;
5855 fcport->disc_state = DSC_LOGIN_COMPLETE;
5856 fcport->login_succ = 1;
5857 newfcport = 1;
5858 }
5859
5860 fcport->deleted = 0;
5861 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5862
5863 switch (vha->host->active_mode) {
5864 case MODE_INITIATOR:
5865 case MODE_DUAL:
5866 if (newfcport) {
5867 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5868 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5869 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5870 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5871 qla24xx_post_upd_fcport_work(vha, fcport);
5872 } else {
83548fe2 5873 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5874 "%s %d %8phC post gpsc fcp_cnt %d\n",
5875 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5876 qla24xx_post_gpsc_work(vha, fcport);
5877 }
5878 }
5879 break;
5880
5881 case MODE_TARGET:
5882 default:
5883 break;
5884 }
5885 if (del)
5886 qla2x00_free_fcport(del);
5887
2d70c103
NB		 5888 return fcport;
5889}
5890
5891/* Must be called under tgt_mutex */
5d964837 5892static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5893 uint8_t *s_id)
5894{
5d964837 5895 struct fc_port *sess = NULL;
2d70c103
NB		 5896 fc_port_t *fcport = NULL;
5897 int rc, global_resets;
5898 uint16_t loop_id = 0;
5899
726b8548
QT		 5900 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5901 /*
5902 * This is Domain Controller, so it should be
5903 * OK to drop SCSI commands from it.
5904 */
5905 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5906 "Unable to find initiator with S_ID %x:%x:%x",
5907 s_id[0], s_id[1], s_id[2]);
5908 return NULL;
5909 }
5910
71cdc079
AP		 5911 mutex_lock(&vha->vha_tgt.tgt_mutex);
5912
2d70c103 5913retry:
0e8cd71c
SK		 5914 global_resets =
5915 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5916
5917 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5918 if (rc != 0) {
71cdc079
AP		 5919 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5920
726b8548
QT		 5921 ql_log(ql_log_info, vha, 0xf071,
5922 "qla_target(%d): Unable to find "
5923 "initiator with S_ID %x:%x:%x",
5924 vha->vp_idx, s_id[0], s_id[1],
5925 s_id[2]);
71cdc079
AP		 5926
5927 if (rc == -ENOENT) {
5928 qlt_port_logo_t logo;
5929 sid_to_portid(s_id, &logo.id);
5930 logo.cmd_count = 1;
5931 qlt_send_first_logo(vha, &logo);
5932 }
5933
2d70c103
NB		 5934 return NULL;
5935 }
5936
5937 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5938 if (!fcport) {
5939 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5940 return NULL;
71cdc079 5941 }
2d70c103
NB		 5942
5943 if (global_resets !=
0e8cd71c 5944 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5945 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5946 "qla_target(%d): global reset during session discovery "
5947 "(counter was %d, new %d), retrying", vha->vp_idx,
5948 global_resets,
0e8cd71c
SK		 5949 atomic_read(&vha->vha_tgt.
5950 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5951 goto retry;
5952 }
5953
5954 sess = qlt_create_sess(vha, fcport, true);
5955
71cdc079
AP		 5956 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5957
2d70c103
NB		 5958 return sess;
5959}
5960
5961static void qlt_abort_work(struct qla_tgt *tgt,
5962 struct qla_tgt_sess_work_param *prm)
5963{
5964 struct scsi_qla_host *vha = tgt->vha;
5965 struct qla_hw_data *ha = vha->hw;
5d964837 5966 struct fc_port *sess = NULL;
7560151b 5967 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5968 uint32_t be_s_id;
5969 uint8_t s_id[3];
5970 int rc;
5971
7560151b 5972 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5973
5974 if (tgt->tgt_stop)
7560151b 5975 goto out_term2;
2d70c103
NB		 5976
5977 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5978 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5979 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5980
5981 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5982 (unsigned char *)&be_s_id);
5983 if (!sess) {
7560151b 5984 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 5985
2d70c103
NB		 5986 sess = qlt_make_local_sess(vha, s_id);
5987 /* sess has got an extra creation ref */
2d70c103 5988
7560151b 5989 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 5990 if (!sess)
7560151b 5991 goto out_term2;
2d70c103 5992 } else {
726b8548 5993 if (sess->deleted) {
e52a8b45 5994 sess = NULL;
7560151b 5995 goto out_term2;
e52a8b45
AP		 5996 }
5997
726b8548 5998 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 5999 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 6000 "%s: kref_get fail %8phC \n",
6001 __func__, sess->port_name);
6002 sess = NULL;
6003 goto out_term2;
6004 }
2d70c103
NB		 6005 }
6006
2d70c103 6007 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 6008 ha->tgt.tgt_ops->put_sess(sess);
6009 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6010
2d70c103
NB		 6011 if (rc != 0)
6012 goto out_term;
2d70c103
NB		 6013 return;
6014
7560151b 6015out_term2:
f159b3c7
QT		 6016 if (sess)
6017 ha->tgt.tgt_ops->put_sess(sess);
6018 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 6019
2d70c103 6020out_term:
f159b3c7 6021 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6022 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6023 FCP_TMF_REJECTED, false);
7560151b 6024 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6025}
6026
6027static void qlt_tmr_work(struct qla_tgt *tgt,
6028 struct qla_tgt_sess_work_param *prm)
6029{
6030 struct atio_from_isp *a = &prm->tm_iocb2;
6031 struct scsi_qla_host *vha = tgt->vha;
6032 struct qla_hw_data *ha = vha->hw;
5d964837 6033 struct fc_port *sess = NULL;
2d70c103
NB		 6034 unsigned long flags;
6035 uint8_t *s_id = NULL; /* to hide compiler warnings */
6036 int rc;
f775bd14 6037 u64 unpacked_lun;
52c82823 6038 int fn;
2d70c103
NB		 6039 void *iocb;
6040
7560151b 6041 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6042
6043 if (tgt->tgt_stop)
f159b3c7 6044 goto out_term2;
2d70c103
NB		 6045
6046 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6047 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6048 if (!sess) {
7560151b 6049 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6050
2d70c103
NB		 6051 sess = qlt_make_local_sess(vha, s_id);
6052 /* sess has got an extra creation ref */
2d70c103 6053
7560151b 6054 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6055 if (!sess)
f159b3c7 6056 goto out_term2;
2d70c103 6057 } else {
726b8548 6058 if (sess->deleted) {
e52a8b45 6059 sess = NULL;
f159b3c7 6060 goto out_term2;
e52a8b45
AP		 6061 }
6062
726b8548 6063 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6064 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6065 "%s: kref_get fail %8phC\n",
6066 __func__, sess->port_name);
6067 sess = NULL;
f159b3c7 6068 goto out_term2;
726b8548 6069 }
2d70c103
NB		 6070 }
6071
6072 iocb = a;
2d70c103 6073 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6074 unpacked_lun =
6075 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6076
6077 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 6078 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6079 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 6080
6081 if (rc != 0)
6082 goto out_term;
2d70c103
NB		 6083 return;
6084
f159b3c7
QT		 6085out_term2:
6086 if (sess)
6087 ha->tgt.tgt_ops->put_sess(sess);
6088 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6089out_term:
82de802a 6090 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6091}
6092
6093static void qlt_sess_work_fn(struct work_struct *work)
6094{
6095 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6096 struct scsi_qla_host *vha = tgt->vha;
6097 unsigned long flags;
6098
6099 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6100
6101 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6102 while (!list_empty(&tgt->sess_works_list)) {
6103 struct qla_tgt_sess_work_param *prm = list_entry(
6104 tgt->sess_works_list.next, typeof(*prm),
6105 sess_works_list_entry);
6106
6107 /*
6108 * This work can be scheduled on several CPUs at time, so we
6109 * must delete the entry to eliminate double processing
6110 */
6111 list_del(&prm->sess_works_list_entry);
6112
6113 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6114
6115 switch (prm->type) {
6116 case QLA_TGT_SESS_WORK_ABORT:
6117 qlt_abort_work(tgt, prm);
6118 break;
6119 case QLA_TGT_SESS_WORK_TM:
6120 qlt_tmr_work(tgt, prm);
6121 break;
6122 default:
6123 BUG_ON(1);
6124 break;
6125 }
6126
6127 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6128
6129 kfree(prm);
6130 }
6131 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6132}
6133
6134/* Must be called under tgt_host_action_mutex */
6135int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6136{
6137 struct qla_tgt *tgt;
e326d22a
QT		 6138 int rc, i;
6139 struct qla_qpair_hint *h;
2d70c103
NB		 6140
6141 if (!QLA_TGT_MODE_ENABLED())
6142 return 0;
6143
33c36c0a
AE		 6144 if (!IS_TGT_MODE_CAPABLE(ha)) {
6145 ql_log(ql_log_warn, base_vha, 0xe070,
6146 "This adapter does not support target mode.\n");
6147 return 0;
6148 }
6149
2d70c103 6150 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6151 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6152
0e8cd71c 6153 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6154
6155 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6156 if (!tgt) {
6157 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6158 "Unable to allocate struct qla_tgt\n");
6159 return -ENOMEM;
6160 }
6161
e326d22a
QT		 6162 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6163 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6164 if (!tgt->qphints) {
6165 kfree(tgt);
6166 ql_log(ql_log_warn, base_vha, 0x0197,
6167 "Unable to allocate qpair hints.\n");
6168 return -ENOMEM;
6169 }
6170
2d70c103
NB		 6171 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6172 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6173
e326d22a
QT		 6174 rc = btree_init64(&tgt->lun_qpair_map);
6175 if (rc) {
6176 kfree(tgt->qphints);
6177 kfree(tgt);
6178 ql_log(ql_log_info, base_vha, 0x0198,
6179 "Unable to initialize lun_qpair_map btree\n");
6180 return -EIO;
6181 }
6182 h = &tgt->qphints[0];
6183 h->qpair = ha->base_qpair;
6184 INIT_LIST_HEAD(&h->hint_elem);
6185 h->cpuid = ha->base_qpair->cpuid;
6186 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6187
6188 for (i = 0; i < ha->max_qpairs; i++) {
6189 unsigned long flags;
6190
6191 struct qla_qpair *qpair = ha->queue_pair_map[i];
6192 h = &tgt->qphints[i + 1];
6193 INIT_LIST_HEAD(&h->hint_elem);
6194 if (qpair) {
6195 h->qpair = qpair;
6196 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6197 list_add_tail(&h->hint_elem, &qpair->hints_list);
6198 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6199 h->cpuid = qpair->cpuid;
6200 }
6201 }
6202
2d70c103
NB		 6203 tgt->ha = ha;
6204 tgt->vha = base_vha;
6205 init_waitqueue_head(&tgt->waitQ);
2d70c103 6206 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6207 spin_lock_init(&tgt->sess_work_lock);
6208 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6209 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6210 atomic_set(&tgt->tgt_global_resets_count, 0);
6211
0e8cd71c 6212 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6213
6214 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6215 "qla_target(%d): using 64 Bit PCI addressing",
6216 base_vha->vp_idx);
2d70c103
NB		 6217 /* 3 is reserved */
6218 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6219
6220 mutex_lock(&qla_tgt_mutex);
6221 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6222 mutex_unlock(&qla_tgt_mutex);
6223
f1443eeb
QT		 6224 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6225 ha->tgt.tgt_ops->add_target(base_vha);
6226
2d70c103
NB		 6227 return 0;
6228}
6229
6230/* Must be called under tgt_host_action_mutex */
6231int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6232{
0e8cd71c 6233 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6234 return 0;
6235
ddb95145
NB		 6236 if (vha->fc_vport) {
6237 qlt_release(vha->vha_tgt.qla_tgt);
6238 return 0;
6239 }
33e79977
QT		 6240
6241 /* free left over qfull cmds */
6242 qlt_init_term_exchange(vha);
6243
2d70c103
NB		 6244 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6245 vha->host_no, ha);
0e8cd71c 6246 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6247
6248 return 0;
6249}
6250
482c9dc7
QT		 6251void qlt_remove_target_resources(struct qla_hw_data *ha)
6252{
6253 struct scsi_qla_host *node;
6254 u32 key = 0;
6255
6256 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6257 btree_remove32(&ha->tgt.host_map, key);
6258
6259 btree_destroy32(&ha->tgt.host_map);
6260}
6261
2d70c103
NB		 6262static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6263 unsigned char *b)
6264{
6265 int i;
6266
6267 pr_debug("qla2xxx HW vha->node_name: ");
6268 for (i = 0; i < WWN_SIZE; i++)
6269 pr_debug("%02x ", vha->node_name[i]);
6270 pr_debug("\n");
6271 pr_debug("qla2xxx HW vha->port_name: ");
6272 for (i = 0; i < WWN_SIZE; i++)
6273 pr_debug("%02x ", vha->port_name[i]);
6274 pr_debug("\n");
6275
6276 pr_debug("qla2xxx passed configfs WWPN: ");
6277 put_unaligned_be64(wwpn, b);
6278 for (i = 0; i < WWN_SIZE; i++)
6279 pr_debug("%02x ", b[i]);
6280 pr_debug("\n");
6281}
6282
6283/**
6284 * qla_tgt_lport_register - register lport with external module
6285 *
2d70c103 6286 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
2db6228d
BVA		 6287 * @phys_wwpn:
6288 * @npiv_wwpn:
6289 * @npiv_wwnn:
6290 * @callback: lport initialization callback for tcm_qla2xxx code
2d70c103 6291 */
49a47f2c
NB		 6292int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6293 u64 npiv_wwpn, u64 npiv_wwnn,
6294 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6295{
6296 struct qla_tgt *tgt;
6297 struct scsi_qla_host *vha;
6298 struct qla_hw_data *ha;
6299 struct Scsi_Host *host;
6300 unsigned long flags;
6301 int rc;
6302 u8 b[WWN_SIZE];
6303
6304 mutex_lock(&qla_tgt_mutex);
6305 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6306 vha = tgt->vha;
6307 ha = vha->hw;
6308
6309 host = vha->host;
6310 if (!host)
6311 continue;
6312
2d70c103
NB		 6313 if (!(host->hostt->supported_mode & MODE_TARGET))
6314 continue;
6315
6316 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6317 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6318 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6319 host->host_no);
6320 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6321 continue;
6322 }
ddb95145
NB		 6323 if (tgt->tgt_stop) {
6324 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6325 host->host_no);
6326 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6327 continue;
6328 }
2d70c103
NB		 6329 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6330
6331 if (!scsi_host_get(host)) {
6332 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6333 "Unable to scsi_host_get() for"
6334 " qla2xxx scsi_host\n");
6335 continue;
6336 }
49a47f2c 6337 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6338
6339 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6340 scsi_host_put(host);
6341 continue;
6342 }
49a47f2c
NB		 6343 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6344 if (rc != 0)
6345 scsi_host_put(host);
6346
ddb95145 6347 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6348 return rc;
6349 }
6350 mutex_unlock(&qla_tgt_mutex);
6351
6352 return -ENODEV;
6353}
6354EXPORT_SYMBOL(qlt_lport_register);
6355
6356/**
6357 * qla_tgt_lport_deregister - Degister lport
6358 *
6359 * @vha: Registered scsi_qla_host pointer
6360 */
6361void qlt_lport_deregister(struct scsi_qla_host *vha)
6362{
6363 struct qla_hw_data *ha = vha->hw;
6364 struct Scsi_Host *sh = vha->host;
6365 /*
6366 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6367 */
0e8cd71c 6368 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6369 ha->tgt.tgt_ops = NULL;
6370 /*
6371 * Release the Scsi_Host reference for the underlying qla2xxx host
6372 */
6373 scsi_host_put(sh);
6374}
6375EXPORT_SYMBOL(qlt_lport_deregister);
6376
6377/* Must be called under HW lock */
55a9066f 6378static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6379{
2d70c103
NB		 6380 switch (ql2x_ini_mode) {
6381 case QLA2XXX_INI_MODE_DISABLED:
6382 case QLA2XXX_INI_MODE_EXCLUSIVE:
6383 vha->host->active_mode = MODE_TARGET;
6384 break;
6385 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6386 vha->host->active_mode = MODE_UNKNOWN;
6387 break;
6388 case QLA2XXX_INI_MODE_DUAL:
6389 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6390 break;
6391 default:
6392 break;
6393 }
2d70c103
NB		 6394}
6395
6396/* Must be called under HW lock */
55a9066f 6397static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6398{
2d70c103
NB		 6399 switch (ql2x_ini_mode) {
6400 case QLA2XXX_INI_MODE_DISABLED:
6401 vha->host->active_mode = MODE_UNKNOWN;
6402 break;
6403 case QLA2XXX_INI_MODE_EXCLUSIVE:
6404 vha->host->active_mode = MODE_INITIATOR;
6405 break;
6406 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6407 case QLA2XXX_INI_MODE_DUAL:
6408 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6409 break;
6410 default:
6411 break;
6412 }
2d70c103
NB		 6413}
6414
6415/*
6416 * qla_tgt_enable_vha - NO LOCK HELD
6417 *
6418 * host_reset, bring up w/ Target Mode Enabled
6419 */
6420void
6421qlt_enable_vha(struct scsi_qla_host *vha)
6422{
6423 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6424 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6425 unsigned long flags;
0e8cd71c 6426 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6427
6428 if (!tgt) {
6429 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6430 "Unable to locate qla_tgt pointer from"
6431 " struct qla_hw_data\n");
6432 dump_stack();
6433 return;
6434 }
6435
6436 spin_lock_irqsave(&ha->hardware_lock, flags);
6437 tgt->tgt_stopped = 0;
6438 qlt_set_mode(vha);
6439 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6440
0e8cd71c
SK		 6441 if (vha->vp_idx) {
6442 qla24xx_disable_vp(vha);
6443 qla24xx_enable_vp(vha);
6444 } else {
6445 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6446 qla2xxx_wake_dpc(base_vha);
6447 qla2x00_wait_for_hba_online(base_vha);
6448 }
2d70c103
NB		 6449}
6450EXPORT_SYMBOL(qlt_enable_vha);
6451
6452/*
6453 * qla_tgt_disable_vha - NO LOCK HELD
6454 *
6455 * Disable Target Mode and reset the adapter
6456 */
55a9066f 6457static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6458{
6459 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6460 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6461 unsigned long flags;
6462
6463 if (!tgt) {
6464 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6465 "Unable to locate qla_tgt pointer from"
6466 " struct qla_hw_data\n");
6467 dump_stack();
6468 return;
6469 }
6470
6471 spin_lock_irqsave(&ha->hardware_lock, flags);
6472 qlt_clear_mode(vha);
6473 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6474
6475 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6476 qla2xxx_wake_dpc(vha);
6477 qla2x00_wait_for_hba_online(vha);
6478}
6479
6480/*
6481 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6482 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6483 * members.
6484 */
6485void
6486qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6487{
0e8cd71c
SK		 6488 vha->vha_tgt.qla_tgt = NULL;
6489
6490 mutex_init(&vha->vha_tgt.tgt_mutex);
6491 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6492
6493 qlt_clear_mode(vha);
6494
6495 /*
6496 * NOTE: Currently the value is kept the same for <24xx and
6497 * >=24xx ISPs. If it is necessary to change it,
6498 * the check should be added for specific ISPs,
6499 * assigning the value appropriately.
6500 */
6501 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6502
6503 qlt_add_target(ha, vha);
2d70c103
NB		 6504}
6505
e374f9f5
QT		 6506u8
6507qlt_rff_id(struct scsi_qla_host *vha)
2d70c103 6508{
e374f9f5 6509 u8 fc4_feature = 0;
2d70c103
NB		 6510 /*
6511 * FC-4 Feature bit 0 indicates target functionality to the name server.
6512 */
6513 if (qla_tgt_mode_enabled(vha)) {
e374f9f5 6514 fc4_feature = BIT_0;
2d70c103 6515 } else if (qla_ini_mode_enabled(vha)) {
e374f9f5 6516 fc4_feature = BIT_1;
726b8548 6517 } else if (qla_dual_mode_enabled(vha))
e374f9f5
QT		 6518 fc4_feature = BIT_0 | BIT_1;
6519
6520 return fc4_feature;
2d70c103
NB		 6521}
6522
6523/*
6524 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6525 * @ha: HA context
6526 *
6527 * Beginning of ATIO ring has initialization control block already built
6528 * by nvram config routine.
6529 *
6530 * Returns 0 on success.
6531 */
6532void
6533qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6534{
6535 struct qla_hw_data *ha = vha->hw;
6536 uint16_t cnt;
6537 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6538
ead03855 6539 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6540 return;
6541
6542 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6543 pkt->u.raw.signature = ATIO_PROCESSED;
6544 pkt++;
6545 }
6546
6547}
6548
6549/*
6550 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6551 * @ha: SCSI driver HA context
6552 */
6553void
2f424b9b 6554qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6555{
6556 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6557 struct atio_from_isp *pkt;
6558 int cnt, i;
6559
ec7193e2 6560 if (!ha->flags.fw_started)
2d70c103
NB		 6561 return;
6562
5f35509d
QT		 6563 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6564 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6565 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6566 cnt = pkt->u.raw.entry_count;
6567
5f35509d
QT		 6568 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6569 /*
6570 * This packet is corrupted. The header + payload
6571 * can not be trusted. There is no point in passing
6572 * it further up.
6573 */
83548fe2 6574 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6575 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6576 pkt->u.isp24.fcp_hdr.s_id,
6577 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6578 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6579
6580 adjust_corrupted_atio(pkt);
82de802a
QT		 6581 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6582 ha_locked, 0);
5f35509d
QT		 6583 } else {
6584 qlt_24xx_atio_pkt_all_vps(vha,
6585 (struct atio_from_isp *)pkt, ha_locked);
6586 }
2d70c103
NB		 6587
6588 for (i = 0; i < cnt; i++) {
6589 ha->tgt.atio_ring_index++;
6590 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6591 ha->tgt.atio_ring_index = 0;
6592 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6593 } else
6594 ha->tgt.atio_ring_ptr++;
6595
6596 pkt->u.raw.signature = ATIO_PROCESSED;
6597 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6598 }
6599 wmb();
6600 }
6601
6602 /* Adjust ring index */
aa230bc5 6603 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6604}
6605
6606void
aa230bc5 6607qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6608{
6609 struct qla_hw_data *ha = vha->hw;
d2b292c3
QT		 6610 struct qla_msix_entry *msix = &ha->msix_entries[2];
6611 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6612
aa230bc5
AE		 6613 if (!QLA_TGT_MODE_ENABLED())
6614 return;
2d70c103 6615
aa230bc5
AE		 6616 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6617 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6618 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6619
d2b292c3
QT		 6620 if (ha->flags.msix_enabled) {
6621 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6622 if (IS_QLA2071(ha)) {
6623 /* 4 ports Baker: Enable Interrupt Handshake */
6624 icb->msix_atio = 0;
6625 icb->firmware_options_2 |= BIT_26;
6626 } else {
6627 icb->msix_atio = cpu_to_le16(msix->entry);
6628 icb->firmware_options_2 &= ~BIT_26;
6629 }
6630 ql_dbg(ql_dbg_init, vha, 0xf072,
6631 "Registering ICB vector 0x%x for atio que.\n",
6632 msix->entry);
6633 }
6634 } else {
6635 /* INTx|MSI */
6636 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6637 icb->msix_atio = 0;
6638 icb->firmware_options_2 |= BIT_26;
6639 ql_dbg(ql_dbg_init, vha, 0xf072,
6640 "%s: Use INTx for ATIOQ.\n", __func__);
6641 }
2d70c103
NB		 6642 }
6643}
6644
6645void
6646qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6647{
6648 struct qla_hw_data *ha = vha->hw;
9cd883f0 6649 u32 tmp;
99e1b683
QT		 6650
6651 if (!QLA_TGT_MODE_ENABLED())
6652 return;
2d70c103 6653
ead03855 6654 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6655 if (!ha->tgt.saved_set) {
6656 /* We save only once */
6657 ha->tgt.saved_exchange_count = nv->exchange_count;
6658 ha->tgt.saved_firmware_options_1 =
6659 nv->firmware_options_1;
6660 ha->tgt.saved_firmware_options_2 =
6661 nv->firmware_options_2;
6662 ha->tgt.saved_firmware_options_3 =
6663 nv->firmware_options_3;
6664 ha->tgt.saved_set = 1;
6665 }
6666
99e1b683 6667 if (qla_tgt_mode_enabled(vha))
ead03855 6668 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6669 else /* dual */
6670 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6671
6672 /* Enable target mode */
ad950360 6673 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6674
6675 /* Disable ini mode, if requested */
726b8548 6676 if (qla_tgt_mode_enabled(vha))
ad950360 6677 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6678
6679 /* Disable Full Login after LIP */
ad950360 6680 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6681 /* Enable initial LIP */
ad950360 6682 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6683 if (ql2xtgt_tape_enable)
6684 /* Enable FC Tape support */
6685 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6686 else
6687 /* Disable FC Tape support */
6688 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6689
2d70c103 6690 /* Disable Full Login after LIP */
ad950360 6691 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6692
6693 /*
6694 * clear BIT 15 explicitly as we have seen at least
6695 * a couple of instances where this was set and this
6696 * was causing the firmware to not be initialized.
6697 */
6698 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6699 /* Enable target PRLI control */
ad950360 6700 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6701
6702 if (IS_QLA25XX(ha)) {
6703 /* Change Loop-prefer to Pt-Pt */
6704 tmp = ~(BIT_4|BIT_5|BIT_6);
6705 nv->firmware_options_2 &= cpu_to_le32(tmp);
6706 tmp = P2P << 4;
6707 nv->firmware_options_2 |= cpu_to_le32(tmp);
6708 }
2d70c103
NB		 6709 } else {
6710 if (ha->tgt.saved_set) {
6711 nv->exchange_count = ha->tgt.saved_exchange_count;
6712 nv->firmware_options_1 =
6713 ha->tgt.saved_firmware_options_1;
6714 nv->firmware_options_2 =
6715 ha->tgt.saved_firmware_options_2;
6716 nv->firmware_options_3 =
6717 ha->tgt.saved_firmware_options_3;
6718 }
6719 return;
6720 }
6721
7c3f8fd1 6722 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6723 if (vha->flags.init_done)
6724 fc_host_supported_classes(vha->host) =
6725 FC_COS_CLASS2 | FC_COS_CLASS3;
6726
ad950360 6727 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6728 } else {
6729 if (vha->flags.init_done)
6730 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6731
ad950360 6732 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6733 }
6734}
6735
6736void
6737qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6738 struct init_cb_24xx *icb)
6739{
6740 struct qla_hw_data *ha = vha->hw;
6741
481ce733
QT		 6742 if (!QLA_TGT_MODE_ENABLED())
6743 return;
6744
2d70c103
NB		 6745 if (ha->tgt.node_name_set) {
6746 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6747 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6748 }
481ce733
QT		 6749
6750 /* disable ZIO at start time. */
6751 if (!vha->flags.init_done) {
6752 uint32_t tmp;
6753 tmp = le32_to_cpu(icb->firmware_options_2);
6754 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6755 icb->firmware_options_2 = cpu_to_le32(tmp);
6756 }
2d70c103
NB		 6757}
6758
aa230bc5
AE		 6759void
6760qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6761{
6762 struct qla_hw_data *ha = vha->hw;
9cd883f0 6763 u32 tmp;
aa230bc5
AE		 6764
6765 if (!QLA_TGT_MODE_ENABLED())
6766 return;
6767
ead03855 6768 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6769 if (!ha->tgt.saved_set) {
6770 /* We save only once */
6771 ha->tgt.saved_exchange_count = nv->exchange_count;
6772 ha->tgt.saved_firmware_options_1 =
6773 nv->firmware_options_1;
6774 ha->tgt.saved_firmware_options_2 =
6775 nv->firmware_options_2;
6776 ha->tgt.saved_firmware_options_3 =
6777 nv->firmware_options_3;
6778 ha->tgt.saved_set = 1;
6779 }
6780
99e1b683 6781 if (qla_tgt_mode_enabled(vha))
ead03855 6782 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6783 else /* dual */
6784 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6785
6786 /* Enable target mode */
ad950360 6787 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6788
6789 /* Disable ini mode, if requested */
726b8548 6790 if (qla_tgt_mode_enabled(vha))
ad950360 6791 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6792 /* Disable Full Login after LIP */
ad950360 6793 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6794 /* Enable initial LIP */
ad950360 6795 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6796 /*
6797 * clear BIT 15 explicitly as we have seen at
6798 * least a couple of instances where this was set
6799 * and this was causing the firmware to not be
6800 * initialized.
6801 */
6802 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6803 if (ql2xtgt_tape_enable)
6804 /* Enable FC tape support */
6805 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6806 else
6807 /* Disable FC tape support */
6808 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6809
aa230bc5 6810 /* Disable Full Login after LIP */
ad950360 6811 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6812 /* Enable target PRLI control */
ad950360 6813 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6814
6815 /* Change Loop-prefer to Pt-Pt */
6816 tmp = ~(BIT_4|BIT_5|BIT_6);
6817 nv->firmware_options_2 &= cpu_to_le32(tmp);
6818 tmp = P2P << 4;
6819 nv->firmware_options_2 |= cpu_to_le32(tmp);
aa230bc5
AE		 6820 } else {
6821 if (ha->tgt.saved_set) {
6822 nv->exchange_count = ha->tgt.saved_exchange_count;
6823 nv->firmware_options_1 =
6824 ha->tgt.saved_firmware_options_1;
6825 nv->firmware_options_2 =
6826 ha->tgt.saved_firmware_options_2;
6827 nv->firmware_options_3 =
6828 ha->tgt.saved_firmware_options_3;
6829 }
6830 return;
6831 }
6832
7c3f8fd1 6833 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 6834 if (vha->flags.init_done)
6835 fc_host_supported_classes(vha->host) =
6836 FC_COS_CLASS2 | FC_COS_CLASS3;
6837
ad950360 6838 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6839 } else {
6840 if (vha->flags.init_done)
6841 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6842
ad950360 6843 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6844 }
6845}
6846
6847void
6848qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6849 struct init_cb_81xx *icb)
6850{
6851 struct qla_hw_data *ha = vha->hw;
6852
6853 if (!QLA_TGT_MODE_ENABLED())
6854 return;
6855
6856 if (ha->tgt.node_name_set) {
6857 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6858 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6859 }
481ce733
QT		 6860
6861 /* disable ZIO at start time. */
6862 if (!vha->flags.init_done) {
6863 uint32_t tmp;
6864 tmp = le32_to_cpu(icb->firmware_options_2);
6865 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6866 icb->firmware_options_2 = cpu_to_le32(tmp);
6867 }
6868
aa230bc5
AE		 6869}
6870
6871void
6872qlt_83xx_iospace_config(struct qla_hw_data *ha)
6873{
6874 if (!QLA_TGT_MODE_ENABLED())
6875 return;
6876
6877 ha->msix_count += 1; /* For ATIO Q */
6878}
6879
2d70c103
NB		 6880
6881void
6882qlt_modify_vp_config(struct scsi_qla_host *vha,
6883 struct vp_config_entry_24xx *vpmod)
6884{
ead03855
QT		 6885 /* enable target mode. Bit5 = 1 => disable */
6886 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6887 vpmod->options_idx1 &= ~BIT_5;
726b8548 6888
ead03855 6889 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6890 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6891 vpmod->options_idx1 &= ~BIT_4;
6892}
6893
6894void
6895qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6896{
482c9dc7
QT		 6897 int rc;
6898
2d70c103
NB		 6899 if (!QLA_TGT_MODE_ENABLED())
6900 return;
6901
c9558869 6902 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6903 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6904 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6905 } else {
6906 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6907 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6908 }
6909
0e8cd71c
SK		 6910 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6911 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6912
6913 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6914 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6915 qlt_unknown_atio_work_fn);
6916
2d70c103 6917 qlt_clear_mode(base_vha);
482c9dc7
QT		 6918
6919 rc = btree_init32(&ha->tgt.host_map);
6920 if (rc)
83548fe2 6921 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6922 "Unable to initialize ha->host_map btree\n");
6923
6924 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6925}
6926
aa230bc5
AE		 6927irqreturn_t
6928qla83xx_msix_atio_q(int irq, void *dev_id)
6929{
6930 struct rsp_que *rsp;
6931 scsi_qla_host_t *vha;
6932 struct qla_hw_data *ha;
6933 unsigned long flags;
6934
6935 rsp = (struct rsp_que *) dev_id;
6936 ha = rsp->hw;
6937 vha = pci_get_drvdata(ha->pdev);
6938
2f424b9b 6939 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6940
2f424b9b 6941 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6942
2f424b9b 6943 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6944
6945 return IRQ_HANDLED;
6946}
6947
2f424b9b
QT		 6948static void
6949qlt_handle_abts_recv_work(struct work_struct *work)
6950{
6951 struct qla_tgt_sess_op *op = container_of(work,
6952 struct qla_tgt_sess_op, work);
6953 scsi_qla_host_t *vha = op->vha;
6954 struct qla_hw_data *ha = vha->hw;
6955 unsigned long flags;
6956
7c3f8fd1
QT		 6957 if (qla2x00_reset_active(vha) ||
6958 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 6959 return;
6960
6961 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6962 qlt_24xx_process_atio_queue(vha, 0);
6963 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6964
6965 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 6966 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 6967 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6968
6969 kfree(op);
2f424b9b
QT		 6970}
6971
6972void
82de802a
QT		 6973qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6974 response_t *pkt)
2f424b9b
QT		 6975{
6976 struct qla_tgt_sess_op *op;
6977
6978 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6979
6980 if (!op) {
6981 /* do not reach for ATIO queue here. This is best effort err
6982 * recovery at this point.
6983 */
82de802a 6984 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 6985 return;
6986 }
6987
6988 memcpy(&op->atio, pkt, sizeof(*pkt));
6989 op->vha = vha;
7c3f8fd1 6990 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 6991 op->rsp = rsp;
2f424b9b
QT		 6992 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
6993 queue_work(qla_tgt_wq, &op->work);
6994 return;
6995}
6996
2d70c103
NB		 6997int
6998qlt_mem_alloc(struct qla_hw_data *ha)
6999{
7000 if (!QLA_TGT_MODE_ENABLED())
7001 return 0;
7002
7003 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
7004 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
7005 if (!ha->tgt.tgt_vp_map)
7006 return -ENOMEM;
7007
7008 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7009 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7010 &ha->tgt.atio_dma, GFP_KERNEL);
7011 if (!ha->tgt.atio_ring) {
7012 kfree(ha->tgt.tgt_vp_map);
7013 return -ENOMEM;
7014 }
7015 return 0;
7016}
7017
7018void
7019qlt_mem_free(struct qla_hw_data *ha)
7020{
7021 if (!QLA_TGT_MODE_ENABLED())
7022 return;
7023
7024 if (ha->tgt.atio_ring) {
7025 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7026 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7027 ha->tgt.atio_dma);
7028 }
7029 kfree(ha->tgt.tgt_vp_map);
7030}
7031
7032/* vport_slock to be held by the caller */
7033void
7034qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7035{
482c9dc7
QT		 7036 void *slot;
7037 u32 key;
7038 int rc;
7039
2d70c103
NB		 7040 if (!QLA_TGT_MODE_ENABLED())
7041 return;
7042
482c9dc7
QT		 7043 key = vha->d_id.b24;
7044
2d70c103
NB		 7045 switch (cmd) {
7046 case SET_VP_IDX:
7047 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7048 break;
7049 case SET_AL_PA:
482c9dc7
QT		 7050 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7051 if (!slot) {
83548fe2 7052 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7053 "Save vha in host_map %p %06x\n", vha, key);
7054 rc = btree_insert32(&vha->hw->tgt.host_map,
7055 key, vha, GFP_ATOMIC);
7056 if (rc)
83548fe2 7057 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7058 "Unable to insert s_id into host_map: %06x\n",
7059 key);
7060 return;
7061 }
83548fe2
QT		 7062 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7063 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7064 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7065 break;
7066 case RESET_VP_IDX:
7067 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7068 break;
7069 case RESET_AL_PA:
83548fe2 7070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7071 "clear vha in host_map %p %06x\n", vha, key);
7072 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7073 if (slot)
7074 btree_remove32(&vha->hw->tgt.host_map, key);
7075 vha->d_id.b24 = 0;
2d70c103
NB		 7076 break;
7077 }
7078}
7079
482c9dc7
QT		 7080void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7081{
482c9dc7
QT		 7082
7083 if (!vha->d_id.b24) {
482c9dc7
QT		 7084 vha->d_id = id;
7085 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7 7086 } else if (vha->d_id.b24 != id.b24) {
482c9dc7
QT		 7087 qlt_update_vp_map(vha, RESET_AL_PA);
7088 vha->d_id = id;
7089 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7
QT		 7090 }
7091}
7092
2d70c103
NB		 7093static int __init qlt_parse_ini_mode(void)
7094{
7095 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7096 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7097 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7098 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7099 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7100 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7101 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7102 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7103 else
7104 return false;
7105
7106 return true;
7107}
7108
7109int __init qlt_init(void)
7110{
7111 int ret;
7112
7113 if (!qlt_parse_ini_mode()) {
7114 ql_log(ql_log_fatal, NULL, 0xe06b,
7115 "qlt_parse_ini_mode() failed\n");
7116 return -EINVAL;
7117 }
7118
7119 if (!QLA_TGT_MODE_ENABLED())
7120 return 0;
7121
2d70c103
NB		 7122 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7123 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7124 qla_tgt_mgmt_cmd), 0, NULL);
7125 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7126 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7127 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7128 return -ENOMEM;
2d70c103
NB		 7129 }
7130
b7bd104e 7131 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7132 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7133 0, NULL);
b7bd104e
AP		 7134
7135 if (!qla_tgt_plogi_cachep) {
7136 ql_log(ql_log_fatal, NULL, 0xe06d,
7137 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7138 ret = -ENOMEM;
7139 goto out_mgmt_cmd_cachep;
7140 }
7141
2d70c103
NB		 7142 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7143 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7144 if (!qla_tgt_mgmt_cmd_mempool) {
7145 ql_log(ql_log_fatal, NULL, 0xe06e,
7146 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7147 ret = -ENOMEM;
b7bd104e 7148 goto out_plogi_cachep;
2d70c103
NB		 7149 }
7150
7151 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7152 if (!qla_tgt_wq) {
7153 ql_log(ql_log_fatal, NULL, 0xe06f,
7154 "alloc_workqueue for qla_tgt_wq failed\n");
7155 ret = -ENOMEM;
7156 goto out_cmd_mempool;
7157 }
7158 /*
7159 * Return 1 to signal that initiator-mode is being disabled
7160 */
7161 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7162
7163out_cmd_mempool:
7164 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7165out_plogi_cachep:
7166 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7167out_mgmt_cmd_cachep:
7168 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7169 return ret;
7170}
7171
7172void qlt_exit(void)
7173{
7174 if (!QLA_TGT_MODE_ENABLED())
7175 return;
7176
7177 destroy_workqueue(qla_tgt_wq);
7178 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7179 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7180 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7181}
Linux 6.x block layer and io_uring tree(s)