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scsi: qla2xxx: Avoid that qlt_send_resp_ctio() corrupts memory
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
ead03855
QT		 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
59 "when ready "
2d70c103
NB		 60 "\"enabled\" (default) - initiator mode will always stay enabled.");
61
99e1b683 62static int ql_dm_tgt_ex_pct = 0;
ead03855
QT		 63module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
64MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
65 "For Dual Mode (qlini_mode=dual), this parameter determines "
66 "the percentage of exchanges/cmds FW will allocate resources "
67 "for Target mode.");
68
09620eeb
QT		 69int ql2xuctrlirq = 1;
70module_param(ql2xuctrlirq, int, 0644);
71MODULE_PARM_DESC(ql2xuctrlirq,
72 "User to control IRQ placement via smp_affinity."
73 "Valid with qlini_mode=disabled."
74 "1(default): enable");
75
aa230bc5 76int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 77
33e79977
QT		 78static int temp_sam_status = SAM_STAT_BUSY;
79
2d70c103
NB		 80/*
81 * From scsi/fc/fc_fcp.h
82 */
83enum fcp_resp_rsp_codes {
84 FCP_TMF_CMPL = 0,
85 FCP_DATA_LEN_INVALID = 1,
86 FCP_CMND_FIELDS_INVALID = 2,
87 FCP_DATA_PARAM_MISMATCH = 3,
88 FCP_TMF_REJECTED = 4,
89 FCP_TMF_FAILED = 5,
90 FCP_TMF_INVALID_LUN = 9,
91};
92
93/*
94 * fc_pri_ta from scsi/fc/fc_fcp.h
95 */
96#define FCP_PTA_SIMPLE 0 /* simple task attribute */
97#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
98#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 99#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 100#define FCP_PTA_MASK 7 /* mask for task attribute field */
101#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
102#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
103
104/*
105 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
106 * must be called under HW lock and could unlock/lock it inside.
107 * It isn't an issue, since in the current implementation on the time when
108 * those functions are called:
109 *
110 * - Either context is IRQ and only IRQ handler can modify HW data,
111 * including rings related fields,
112 *
113 * - Or access to target mode variables from struct qla_tgt doesn't
114 * cross those functions boundaries, except tgt_stop, which
115 * additionally protected by irq_cmd_count.
116 */
117/* Predefs for callbacks handed to qla2xxx LLD */
118static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 119 struct atio_from_isp *pkt, uint8_t);
82de802a
QT		 120static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
121 response_t *pkt);
5d964837 122static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103 123 int fn, void *iocb, int flags);
82de802a 124static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
a07100e0 125 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
33e79977
QT		 126static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
127 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 128static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 129static void qlt_clear_tgt_db(struct qla_tgt *tgt);
82de802a 130static void qlt_send_notify_ack(struct qla_qpair *qpair,
a6ca8878
AP		 131 struct imm_ntfy_from_isp *ntfy,
132 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
133 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 134static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
135 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 136static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
137 fc_port_t *fcport, bool local);
138void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 139static void qlt_24xx_handle_abts(struct scsi_qla_host *,
140 struct abts_recv_from_24xx *);
82de802a
QT		 141static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
142 uint16_t);
8f6fc8d4 143
2d70c103
NB		 144/*
145 * Global Variables
146 */
2d70c103 147static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b5d15312 148struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 149static mempool_t *qla_tgt_mgmt_cmd_mempool;
150static struct workqueue_struct *qla_tgt_wq;
151static DEFINE_MUTEX(qla_tgt_mutex);
152static LIST_HEAD(qla_tgt_glist);
153
be25152c
QT		 154static const char *prot_op_str(u32 prot_op)
155{
156 switch (prot_op) {
157 case TARGET_PROT_NORMAL: return "NORMAL";
158 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
159 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
160 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
161 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
162 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
163 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
164 default: return "UNKNOWN";
165 }
166}
167
df673274
AP		 168/* This API intentionally takes dest as a parameter, rather than returning
169 * int value to avoid caller forgetting to issue wmb() after the store */
170void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
171{
172 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
173 *dest = atomic_inc_return(&base_vha->generation_tick);
174 /* memory barrier */
175 wmb();
176}
177
2d70c103
NB		 178/* Might release hw lock, then reaquire!! */
179static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
180{
181 /* Send marker if required */
182 if (unlikely(vha->marker_needed != 0)) {
183 int rc = qla2x00_issue_marker(vha, vha_locked);
184 if (rc != QLA_SUCCESS) {
185 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
186 "qla_target(%d): issue_marker() failed\n",
187 vha->vp_idx);
188 }
189 return rc;
190 }
191 return QLA_SUCCESS;
192}
193
194static inline
195struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
196 uint8_t *d_id)
197{
482c9dc7
QT		 198 struct scsi_qla_host *host;
199 uint32_t key = 0;
2d70c103 200
482c9dc7
QT		 201 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
202 (vha->d_id.b.al_pa == d_id[2]))
2d70c103
NB		 203 return vha;
204
482c9dc7
QT		 205 key = (uint32_t)d_id[0] << 16;
206 key |= (uint32_t)d_id[1] << 8;
207 key |= (uint32_t)d_id[2];
2d70c103 208
482c9dc7
QT		 209 host = btree_lookup32(&vha->hw->tgt.host_map, key);
210 if (!host)
83548fe2
QT		 211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
212 "Unable to find host %06x\n", key);
482c9dc7
QT		 213
214 return host;
2d70c103
NB		 215}
216
217static inline
218struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
219 uint16_t vp_idx)
220{
221 struct qla_hw_data *ha = vha->hw;
222
223 if (vha->vp_idx == vp_idx)
224 return vha;
225
226 BUG_ON(ha->tgt.tgt_vp_map == NULL);
227 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
228 return ha->tgt.tgt_vp_map[vp_idx].vha;
229
230 return NULL;
231}
232
33e79977
QT		 233static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
234{
235 unsigned long flags;
236
237 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
238
239 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 240 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
241 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 242 vha->hw->tgt.num_pend_cmds;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244}
245static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
246{
247 unsigned long flags;
248
249 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
250 vha->hw->tgt.num_pend_cmds--;
251 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
252}
253
41dc529a
QT		 254
255static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
82de802a 256 struct atio_from_isp *atio, uint8_t ha_locked)
41dc529a
QT		 257{
258 struct qla_tgt_sess_op *u;
259 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
260 unsigned long flags;
261
262 if (tgt->tgt_stop) {
83548fe2
QT		 263 ql_dbg(ql_dbg_async, vha, 0x502c,
264 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
265 vha->vp_idx);
41dc529a
QT		 266 goto out_term;
267 }
268
269 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 270 if (u == NULL)
41dc529a 271 goto out_term;
41dc529a
QT		 272
273 u->vha = vha;
274 memcpy(&u->atio, atio, sizeof(*atio));
275 INIT_LIST_HEAD(&u->cmd_list);
276
277 spin_lock_irqsave(&vha->cmd_list_lock, flags);
278 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
279 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
280
281 schedule_delayed_work(&vha->unknown_atio_work, 1);
282
283out:
284 return;
285
286out_term:
82de802a 287 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
41dc529a
QT		 288 goto out;
289}
290
291static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
292 uint8_t ha_locked)
293{
294 struct qla_tgt_sess_op *u, *t;
295 scsi_qla_host_t *host;
296 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
297 unsigned long flags;
298 uint8_t queued = 0;
299
300 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
301 if (u->aborted) {
83548fe2
QT		 302 ql_dbg(ql_dbg_async, vha, 0x502e,
303 "Freeing unknown %s %p, because of Abort\n",
41dc529a 304 "ATIO_TYPE7", u);
82de802a
QT		 305 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
306 &u->atio, ha_locked, 0);
41dc529a
QT		 307 goto abort;
308 }
309
310 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
311 if (host != NULL) {
83548fe2
QT		 312 ql_dbg(ql_dbg_async, vha, 0x502f,
313 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 314 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
315 } else if (tgt->tgt_stop) {
83548fe2
QT		 316 ql_dbg(ql_dbg_async, vha, 0x503a,
317 "Freeing unknown %s %p, because tgt is being stopped\n",
318 "ATIO_TYPE7", u);
82de802a
QT		 319 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
320 &u->atio, ha_locked, 0);
41dc529a 321 } else {
83548fe2
QT		 322 ql_dbg(ql_dbg_async, vha, 0x503d,
323 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 324 if (!queued) {
325 queued = 1;
326 schedule_delayed_work(&vha->unknown_atio_work,
327 1);
328 }
329 continue;
330 }
331
332abort:
333 spin_lock_irqsave(&vha->cmd_list_lock, flags);
334 list_del(&u->cmd_list);
335 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
336 kfree(u);
337 }
338}
339
340void qlt_unknown_atio_work_fn(struct work_struct *work)
341{
342 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
343 struct scsi_qla_host, unknown_atio_work);
344
345 qlt_try_to_dequeue_unknown_atios(vha, 0);
346}
347
3bb67df5 348static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 349 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 350{
f83adb61
QT		 351 ql_dbg(ql_dbg_tgt, vha, 0xe072,
352 "%s: qla_target(%d): type %x ox_id %04x\n",
353 __func__, vha->vp_idx, atio->u.raw.entry_type,
354 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
355
2d70c103
NB		 356 switch (atio->u.raw.entry_type) {
357 case ATIO_TYPE7:
358 {
359 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
360 atio->u.isp24.fcp_hdr.d_id);
361 if (unlikely(NULL == host)) {
362 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
363 "qla_target(%d): Received ATIO_TYPE7 "
364 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
365 atio->u.isp24.fcp_hdr.d_id[0],
366 atio->u.isp24.fcp_hdr.d_id[1],
367 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 368
369
370 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 371 break;
372 }
41dc529a
QT		 373 if (unlikely(!list_empty(&vha->unknown_atio_list)))
374 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
375
2f424b9b 376 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 377 break;
378 }
379
380 case IMMED_NOTIFY_TYPE:
381 {
382 struct scsi_qla_host *host = vha;
383 struct imm_ntfy_from_isp *entry =
384 (struct imm_ntfy_from_isp *)atio;
385
82de802a
QT		 386 qlt_issue_marker(vha, ha_locked);
387
2d70c103
NB		 388 if ((entry->u.isp24.vp_index != 0xFF) &&
389 (entry->u.isp24.nport_handle != 0xFFFF)) {
390 host = qlt_find_host_by_vp_idx(vha,
391 entry->u.isp24.vp_index);
392 if (unlikely(!host)) {
393 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
394 "qla_target(%d): Received "
395 "ATIO (IMMED_NOTIFY_TYPE) "
396 "with unknown vp_index %d\n",
397 vha->vp_idx, entry->u.isp24.vp_index);
398 break;
399 }
400 }
2f424b9b 401 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 402 break;
403 }
404
41dc529a
QT		 405 case VP_RPT_ID_IOCB_TYPE:
406 qla24xx_report_id_acquisition(vha,
407 (struct vp_rpt_id_entry_24xx *)atio);
408 break;
409
410 case ABTS_RECV_24XX:
411 {
412 struct abts_recv_from_24xx *entry =
413 (struct abts_recv_from_24xx *)atio;
414 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
415 entry->vp_index);
8f6fc8d4
QT		 416 unsigned long flags;
417
41dc529a 418 if (unlikely(!host)) {
83548fe2 419 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 420 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
421 "received, with unknown vp_index %d\n",
422 vha->vp_idx, entry->vp_index);
423 break;
424 }
8f6fc8d4
QT		 425 if (!ha_locked)
426 spin_lock_irqsave(&host->hw->hardware_lock, flags);
427 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
428 if (!ha_locked)
429 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 430 break;
41dc529a
QT		 431 }
432
433 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
434
2d70c103
NB		 435 default:
436 ql_dbg(ql_dbg_tgt, vha, 0xe040,
437 "qla_target(%d): Received unknown ATIO atio "
438 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
439 break;
440 }
441
3bb67df5 442 return false;
2d70c103
NB		 443}
444
82de802a
QT		 445void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
446 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 447{
448 switch (pkt->entry_type) {
f83adb61
QT		 449 case CTIO_CRC2:
450 ql_dbg(ql_dbg_tgt, vha, 0xe073,
451 "qla_target(%d):%s: CRC2 Response pkt\n",
452 vha->vp_idx, __func__);
2d70c103
NB		 453 case CTIO_TYPE7:
454 {
455 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
456 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
457 entry->vp_index);
458 if (unlikely(!host)) {
459 ql_dbg(ql_dbg_tgt, vha, 0xe041,
460 "qla_target(%d): Response pkt (CTIO_TYPE7) "
461 "received, with unknown vp_index %d\n",
462 vha->vp_idx, entry->vp_index);
463 break;
464 }
82de802a 465 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 466 break;
467 }
468
469 case IMMED_NOTIFY_TYPE:
470 {
471 struct scsi_qla_host *host = vha;
472 struct imm_ntfy_from_isp *entry =
473 (struct imm_ntfy_from_isp *)pkt;
474
475 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
476 if (unlikely(!host)) {
477 ql_dbg(ql_dbg_tgt, vha, 0xe042,
478 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
479 "received, with unknown vp_index %d\n",
480 vha->vp_idx, entry->u.isp24.vp_index);
481 break;
482 }
82de802a 483 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 484 break;
485 }
486
487 case NOTIFY_ACK_TYPE:
488 {
489 struct scsi_qla_host *host = vha;
490 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
491
492 if (0xFF != entry->u.isp24.vp_index) {
493 host = qlt_find_host_by_vp_idx(vha,
494 entry->u.isp24.vp_index);
495 if (unlikely(!host)) {
496 ql_dbg(ql_dbg_tgt, vha, 0xe043,
497 "qla_target(%d): Response "
498 "pkt (NOTIFY_ACK_TYPE) "
499 "received, with unknown "
500 "vp_index %d\n", vha->vp_idx,
501 entry->u.isp24.vp_index);
502 break;
503 }
504 }
82de802a 505 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 506 break;
507 }
508
509 case ABTS_RECV_24XX:
510 {
511 struct abts_recv_from_24xx *entry =
512 (struct abts_recv_from_24xx *)pkt;
513 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
514 entry->vp_index);
515 if (unlikely(!host)) {
516 ql_dbg(ql_dbg_tgt, vha, 0xe044,
517 "qla_target(%d): Response pkt "
518 "(ABTS_RECV_24XX) received, with unknown "
519 "vp_index %d\n", vha->vp_idx, entry->vp_index);
520 break;
521 }
82de802a 522 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 523 break;
524 }
525
526 case ABTS_RESP_24XX:
527 {
528 struct abts_resp_to_24xx *entry =
529 (struct abts_resp_to_24xx *)pkt;
530 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
531 entry->vp_index);
532 if (unlikely(!host)) {
533 ql_dbg(ql_dbg_tgt, vha, 0xe045,
534 "qla_target(%d): Response pkt "
535 "(ABTS_RECV_24XX) received, with unknown "
536 "vp_index %d\n", vha->vp_idx, entry->vp_index);
537 break;
538 }
82de802a 539 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 540 break;
541 }
542
543 default:
82de802a 544 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 545 break;
546 }
547
548}
549
b7bd104e
AP		 550/*
551 * All qlt_plogi_ack_t operations are protected by hardware_lock
552 */
726b8548
QT		 553static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
554 struct imm_ntfy_from_isp *ntfy, int type)
555{
556 struct qla_work_evt *e;
557 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
558 if (!e)
559 return QLA_FUNCTION_FAILED;
560
561 e->u.nack.fcport = fcport;
562 e->u.nack.type = type;
563 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
564 return qla2x00_post_work(vha, e);
565}
566
567static
25ff6af1 568void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 569{
726b8548 570 struct srb *sp = (struct srb *)s;
25ff6af1 571 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 572 unsigned long flags;
573
83548fe2
QT		 574 ql_dbg(ql_dbg_disc, vha, 0x20f2,
575 "Async done-%s res %x %8phC type %d\n",
576 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 577
578 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
579 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 580 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 581
582 switch (sp->type) {
583 case SRB_NACK_PLOGI:
584 sp->fcport->login_gen++;
585 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
586 sp->fcport->logout_on_delete = 1;
5b33469a 587 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
3515832c 588 sp->fcport->send_els_logo = 0;
726b8548
QT		 589 break;
590
591 case SRB_NACK_PRLI:
592 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
593 sp->fcport->deleted = 0;
3515832c 594 sp->fcport->send_els_logo = 0;
726b8548
QT		 595
596 if (!sp->fcport->login_succ &&
597 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
598 sp->fcport->login_succ = 1;
599
600 vha->fcport_count++;
601
602 if (!IS_IIDMA_CAPABLE(vha->hw) ||
603 !vha->hw->flags.gpsc_supported) {
83548fe2
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);
ca3dad22 609 sp->fcport->disc_state = DSC_UPD_FCPORT;
726b8548
QT		 610 qla24xx_post_upd_fcport_work(vha, sp->fcport);
611 } else {
83548fe2
QT		 612 ql_dbg(ql_dbg_disc, vha, 0x20f5,
613 "%s %d %8phC post gpsc fcp_cnt %d\n",
614 __func__, __LINE__,
615 sp->fcport->port_name,
616 vha->fcport_count);
726b8548
QT		 617
618 qla24xx_post_gpsc_work(vha, sp->fcport);
619 }
620 }
621 break;
622
623 case SRB_NACK_LOGO:
624 sp->fcport->login_gen++;
625 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
626 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
627 break;
628 }
629 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
630
25ff6af1 631 sp->free(sp);
726b8548
QT		 632}
633
634int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
635 struct imm_ntfy_from_isp *ntfy, int type)
636{
637 int rval = QLA_FUNCTION_FAILED;
638 srb_t *sp;
639 char *c = NULL;
640
641 fcport->flags |= FCF_ASYNC_SENT;
642 switch (type) {
643 case SRB_NACK_PLOGI:
644 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
645 c = "PLOGI";
646 break;
647 case SRB_NACK_PRLI:
648 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 649 fcport->deleted = 0;
726b8548
QT		 650 c = "PRLI";
651 break;
652 case SRB_NACK_LOGO:
653 fcport->fw_login_state = DSC_LS_LOGO_PEND;
654 c = "LOGO";
655 break;
656 }
657
658 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
659 if (!sp)
660 goto done;
661
662 sp->type = type;
663 sp->name = "nack";
664
665 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
666
667 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
e8249182 668 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 669 sp->done = qla2x00_async_nack_sp_done;
670
671 rval = qla2x00_start_sp(sp);
672 if (rval != QLA_SUCCESS)
673 goto done_free_sp;
674
83548fe2
QT		 675 ql_dbg(ql_dbg_disc, vha, 0x20f4,
676 "Async-%s %8phC hndl %x %s\n",
677 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 678
679 return rval;
680
681done_free_sp:
25ff6af1 682 sp->free(sp);
726b8548
QT		 683done:
684 fcport->flags &= ~FCF_ASYNC_SENT;
685 return rval;
686}
687
688void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
689{
690 fc_port_t *t;
726b8548
QT		 691
692 switch (e->u.nack.type) {
693 case SRB_NACK_PRLI:
694 mutex_lock(&vha->vha_tgt.tgt_mutex);
695 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
696 mutex_unlock(&vha->vha_tgt.tgt_mutex);
697 if (t) {
83548fe2 698 ql_log(ql_log_info, vha, 0xd034,
726b8548 699 "%s create sess success %p", __func__, t);
726b8548
QT		 700 /* create sess has an extra kref */
701 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
726b8548
QT		 702 }
703 break;
704 }
705 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
706 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
707}
708
709void qla24xx_delete_sess_fn(struct work_struct *work)
710{
711 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
712 struct qla_hw_data *ha = fcport->vha->hw;
726b8548
QT		 713
714 if (fcport->se_sess) {
715 ha->tgt.tgt_ops->shutdown_sess(fcport);
716 ha->tgt.tgt_ops->put_sess(fcport);
717 } else {
718 qlt_unreg_sess(fcport);
719 }
726b8548
QT		 720}
721
722/*
723 * Called from qla2x00_reg_remote_port()
724 */
725void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
726{
727 struct qla_hw_data *ha = vha->hw;
728 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
729 struct fc_port *sess = fcport;
730 unsigned long flags;
731
732 if (!vha->hw->tgt.tgt_ops)
733 return;
734
735 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
736 if (tgt->tgt_stop) {
737 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
738 return;
739 }
740
741 if (fcport->disc_state == DSC_DELETE_PEND) {
742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
743 return;
744 }
745
746 if (!sess->se_sess) {
747 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
748
749 mutex_lock(&vha->vha_tgt.tgt_mutex);
750 sess = qlt_create_sess(vha, fcport, false);
751 mutex_unlock(&vha->vha_tgt.tgt_mutex);
752
753 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
754 } else {
755 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
756 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
757 return;
758 }
759
760 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 761 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 762 "%s: kref_get fail sess %8phC \n",
763 __func__, sess->port_name);
764 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
765 return;
766 }
767
768 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
769 "qla_target(%u): %ssession for port %8phC "
770 "(loop ID %d) reappeared\n", vha->vp_idx,
771 sess->local ? "local " : "", sess->port_name, sess->loop_id);
772
773 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
774 "Reappeared sess %p\n", sess);
775
776 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
777 fcport->loop_id,
778 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
779 }
780
781 if (sess && sess->local) {
782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
783 "qla_target(%u): local session for "
784 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
785 fcport->port_name, sess->loop_id);
786 sess->local = 0;
787 }
726b8548 788 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f3ebb94b
BVA		 789
790 ha->tgt.tgt_ops->put_sess(sess);
726b8548 791}
b7bd104e
AP		 792
793/*
794 * This is a zero-base ref-counting solution, since hardware_lock
795 * guarantees that ref_count is not modified concurrently.
796 * Upon successful return content of iocb is undefined
797 */
5d964837 798static struct qlt_plogi_ack_t *
b7bd104e
AP		 799qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
800 struct imm_ntfy_from_isp *iocb)
801{
5d964837 802 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 803
804 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
805 if (pla->id.b24 == id->b24) {
806 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 807 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 808 return pla;
809 }
810 }
811
812 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
813 if (!pla) {
814 ql_dbg(ql_dbg_async, vha, 0x5088,
815 "qla_target(%d): Allocation of plogi_ack failed\n",
816 vha->vp_idx);
817 return NULL;
818 }
819
5d964837 820 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 821 pla->id = *id;
822 list_add_tail(&pla->list, &vha->plogi_ack_list);
823
824 return pla;
825}
826
726b8548 827void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 828 struct qlt_plogi_ack_t *pla)
b7bd104e 829{
5d964837 830 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 831 port_id_t port_id;
832 uint16_t loop_id;
833 fc_port_t *fcport = pla->fcport;
834
b7bd104e
AP		 835 BUG_ON(!pla->ref_count);
836 pla->ref_count--;
837
838 if (pla->ref_count)
839 return;
840
726b8548 841 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 842 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 843 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
844 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
845 iocb->u.isp24.port_id[0],
846 le16_to_cpu(iocb->u.isp24.nport_handle),
847 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 848
849 port_id.b.domain = iocb->u.isp24.port_id[2];
850 port_id.b.area = iocb->u.isp24.port_id[1];
851 port_id.b.al_pa = iocb->u.isp24.port_id[0];
852 port_id.b.rsvd_1 = 0;
853
854 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
855
856 fcport->loop_id = loop_id;
857 fcport->d_id = port_id;
ca3dad22
QT		 858 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
859 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
860 else
861 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
726b8548
QT		 862
863 list_for_each_entry(fcport, &vha->vp_fcports, list) {
864 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
865 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
866 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
867 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
868 }
b7bd104e
AP		 869
870 list_del(&pla->list);
871 kmem_cache_free(qla_tgt_plogi_cachep, pla);
872}
873
726b8548 874void
5d964837
QT		 875qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
876 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 877{
5d964837 878 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 879 /* Inc ref_count first because link might already be pointing at pla */
880 pla->ref_count++;
881
726b8548
QT		 882 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
883 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
884 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
885 sess, link, sess->port_name,
886 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
887 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
888 pla->ref_count, pla, link);
889
49ef16f4
QT		 890 if (link == QLT_PLOGI_LINK_CONFLICT) {
891 switch (sess->disc_state) {
892 case DSC_DELETED:
893 case DSC_DELETE_PEND:
894 pla->ref_count--;
895 return;
896 default:
897 break;
898 }
899 }
900
b7bd104e
AP		 901 if (sess->plogi_link[link])
902 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
903
726b8548
QT		 904 if (link == QLT_PLOGI_LINK_SAME_WWN)
905 pla->fcport = sess;
b7bd104e
AP		 906
907 sess->plogi_link[link] = pla;
908}
909
71cdc079
AP		 910typedef struct {
911 /* These fields must be initialized by the caller */
912 port_id_t id;
913 /*
914 * number of cmds dropped while we were waiting for
915 * initiator to ack LOGO initialize to 1 if LOGO is
916 * triggered by a command, otherwise, to 0
917 */
918 int cmd_count;
919
920 /* These fields are used by callee */
921 struct list_head list;
922} qlt_port_logo_t;
923
924static void
925qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
926{
927 qlt_port_logo_t *tmp;
928 int res;
929
930 mutex_lock(&vha->vha_tgt.tgt_mutex);
931
932 list_for_each_entry(tmp, &vha->logo_list, list) {
933 if (tmp->id.b24 == logo->id.b24) {
934 tmp->cmd_count += logo->cmd_count;
935 mutex_unlock(&vha->vha_tgt.tgt_mutex);
936 return;
937 }
938 }
939
940 list_add_tail(&logo->list, &vha->logo_list);
941
942 mutex_unlock(&vha->vha_tgt.tgt_mutex);
943
944 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
945
946 mutex_lock(&vha->vha_tgt.tgt_mutex);
947 list_del(&logo->list);
948 mutex_unlock(&vha->vha_tgt.tgt_mutex);
949
b7bd104e
AP		 950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
951 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
952 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
953 logo->cmd_count, res);
71cdc079
AP		 954}
955
2d70c103
NB		 956static void qlt_free_session_done(struct work_struct *work)
957{
5d964837 958 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 959 free_work);
960 struct qla_tgt *tgt = sess->tgt;
961 struct scsi_qla_host *vha = sess->vha;
962 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 963 unsigned long flags;
964 bool logout_started = false;
726b8548 965 struct event_arg ea;
41dc529a 966 scsi_qla_host_t *base_vha;
ca3dad22
QT		 967 struct qlt_plogi_ack_t *own =
968 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
a6ca8878
AP		 969
970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
971 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 972 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 973 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 974 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 975 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 976 sess->send_els_logo);
2d70c103 977
726b8548 978 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 979 if (sess->send_els_logo) {
980 qlt_port_logo_t logo;
71cdc079 981
41dc529a
QT		 982 logo.id = sess->d_id;
983 logo.cmd_count = 0;
74ec08a4
QT		 984 if (!own)
985 qlt_send_first_logo(vha, &logo);
21af711d 986 sess->send_els_logo = 0;
41dc529a
QT		 987 }
988
43a7435e 989 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 990 int rc;
991
ca3dad22
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_logout_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;
33787401 1025 u16 cnt = 0;
a6ca8878 1026
6aa7de05 1027 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878
AP		 1028 if (!traced) {
1029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1030 "%s: waiting for sess %p logout\n",
1031 __func__, sess);
1032 traced = true;
1033 }
1034 msleep(100);
33787401
QT		 1035 cnt++;
1036 if (cnt > 200)
1037 break;
a6ca8878
AP		 1038 }
1039
726b8548 1040 ql_dbg(ql_dbg_disc, vha, 0xf087,
ca3dad22 1041 "%s: sess %p logout completed\n", __func__, sess);
41dc529a
QT		 1042 }
1043
1044 if (sess->logo_ack_needed) {
1045 sess->logo_ack_needed = 0;
1046 qla24xx_async_notify_ack(vha, sess,
1047 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1048 }
1049
726b8548
QT		 1050 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1051 if (sess->se_sess) {
1052 sess->se_sess = NULL;
1053 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1054 tgt->sess_count--;
1055 }
1056
1057 sess->disc_state = DSC_DELETED;
1058 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1059 sess->deleted = QLA_SESS_DELETED;
1060 sess->login_retry = vha->hw->login_retry_count;
1061
1062 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1063 vha->fcport_count--;
1064 sess->login_succ = 0;
1065 }
1066
43a7435e 1067 qla2x00_clear_loop_id(sess);
726b8548
QT		 1068
1069 if (sess->conflict) {
1070 sess->conflict->login_pause = 0;
1071 sess->conflict = NULL;
1072 if (!test_bit(UNLOADING, &vha->dpc_flags))
1073 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1074 }
1075
b7bd104e 1076 {
5d964837 1077 struct qlt_plogi_ack_t *con =
b7bd104e 1078 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1079 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1080
1081 if (con) {
5d964837 1082 iocb = &con->iocb;
b7bd104e 1083 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1084 "se_sess %p / sess %p port %8phC is gone,"
1085 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1086 sess->se_sess, sess, sess->port_name,
1087 own ? "releasing own PLOGI" : "no own PLOGI pending",
1088 own ? own->ref_count : -1,
1089 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1090 qlt_plogi_ack_unref(vha, con);
726b8548 1091 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1092 } else {
1093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1094 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1095 sess->se_sess, sess, sess->port_name,
1096 own ? "releasing own PLOGI" :
1097 "no own PLOGI pending",
1098 own ? own->ref_count : -1);
1099 }
1100
726b8548
QT		 1101 if (own) {
1102 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1103 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1104 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1105 }
b7bd104e 1106 }
22ade0da 1107
5d964837
QT		 1108 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1109
2d70c103 1110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1111 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1112 sess, sess->port_name, vha->fcport_count);
2d70c103 1113
726b8548 1114 if (tgt && (tgt->sess_count == 0))
2d70c103 1115 wake_up_all(&tgt->waitQ);
726b8548
QT		 1116
1117 if (vha->fcport_count == 0)
1118 wake_up_all(&vha->fcport_waitQ);
1119
41dc529a 1120 base_vha = pci_get_drvdata(ha->pdev);
22ade0da
QT		 1121
1122 sess->free_pending = 0;
1123
41dc529a
QT		 1124 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1125 return;
1126
726b8548
QT		 1127 if (!tgt || !tgt->tgt_stop) {
1128 memset(&ea, 0, sizeof(ea));
1129 ea.event = FCME_DELETE_DONE;
1130 ea.fcport = sess;
1131 qla2x00_fcport_event_handler(vha, &ea);
1132 }
2d70c103
NB		 1133}
1134
5d964837 1135void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1136{
1137 struct scsi_qla_host *vha = sess->vha;
22ade0da 1138 unsigned long flags;
2d70c103 1139
83548fe2 1140 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1141 "%s sess %p for deletion %8phC\n",
1142 __func__, sess, sess->port_name);
1143
22ade0da
QT		 1144 spin_lock_irqsave(&sess->vha->work_lock, flags);
1145 if (sess->free_pending) {
1146 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1147 return;
1148 }
1149 sess->free_pending = 1;
1150 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1151
36c78452
QT		 1152 if (sess->se_sess)
1153 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1154
5d964837
QT		 1155 qla2x00_mark_device_lost(vha, sess, 1, 1);
1156
a6ca8878 1157 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1158 sess->disc_state = DSC_DELETE_PEND;
1159 sess->last_rscn_gen = sess->rscn_gen;
1160 sess->last_login_gen = sess->login_gen;
2d70c103 1161
a5d42f4c
DG		 1162 if (sess->nvme_flag & NVME_FLAG_REGISTERED)
1163 schedule_work(&sess->nvme_del_work);
1164
2d70c103
NB		 1165 INIT_WORK(&sess->free_work, qlt_free_session_done);
1166 schedule_work(&sess->free_work);
1167}
5d964837 1168EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1169
2d70c103
NB		 1170static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1171{
1172 struct qla_hw_data *ha = vha->hw;
5d964837 1173 struct fc_port *sess = NULL;
2d70c103
NB		 1174 uint16_t loop_id;
1175 int res = 0;
1176 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1177 unsigned long flags;
2d70c103
NB		 1178
1179 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1180 if (loop_id == 0xFFFF) {
2d70c103 1181 /* Global event */
b2032fd5 1182 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1183 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1184 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1185 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1186 } else {
7560151b 1187 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1188 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1189 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1190 }
1191
1192 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1193 "Using sess for qla_tgt_reset: %p\n", sess);
1194 if (!sess) {
1195 res = -ESRCH;
1196 return res;
1197 }
1198
1199 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1200 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1201 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1202 mcmd, loop_id);
1203
bb1181c9 1204 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1205}
1206
726b8548
QT		 1207static void qla24xx_chk_fcp_state(struct fc_port *sess)
1208{
7c3f8fd1 1209 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1210 sess->logout_on_delete = 0;
1211 sess->logo_ack_needed = 0;
1212 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1213 sess->scan_state = 0;
1214 }
1215}
1216
25062aed 1217void qlt_schedule_sess_for_deletion(struct fc_port *sess)
2d70c103
NB		 1218{
1219 struct qla_tgt *tgt = sess->tgt;
147c591f 1220 unsigned long flags;
2d70c103 1221
726b8548
QT		 1222 if (sess->disc_state == DSC_DELETE_PEND)
1223 return;
1224
1225 if (sess->disc_state == DSC_DELETED) {
1226 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1227 wake_up_all(&tgt->waitQ);
1228 if (sess->vha->fcport_count == 0)
1229 wake_up_all(&sess->vha->fcport_waitQ);
1230
1231 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1232 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1233 return;
1234 }
2d70c103 1235
726b8548
QT		 1236 if (sess->deleted == QLA_SESS_DELETED)
1237 sess->logout_on_delete = 0;
1238
dc5d0db7 1239 spin_lock_irqsave(&sess->vha->work_lock, flags);
147c591f 1240 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
dc5d0db7 1241 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
147c591f
QT		 1242 return;
1243 }
726b8548 1244 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
dc5d0db7 1245 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
147c591f
QT		 1246
1247 sess->disc_state = DSC_DELETE_PEND;
1248
726b8548 1249 qla24xx_chk_fcp_state(sess);
2d70c103 1250
726b8548 1251 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
41baa709
QT		 1252 "Scheduling sess %p for deletion %8phC\n",
1253 sess, sess->port_name);
2d70c103 1254
31fdcce1 1255 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
726b8548 1256}
2d70c103 1257
7560151b 1258/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1259static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1260{
5d964837
QT		 1261 struct fc_port *sess;
1262 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1263
5d964837
QT		 1264 list_for_each_entry(sess, &vha->vp_fcports, list) {
1265 if (sess->se_sess)
25062aed 1266 qlt_schedule_sess_for_deletion(sess);
5d964837 1267 }
2d70c103
NB		 1268
1269 /* At this point tgt could be already dead */
1270}
1271
1272static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1273 uint16_t *loop_id)
1274{
1275 struct qla_hw_data *ha = vha->hw;
1276 dma_addr_t gid_list_dma;
1277 struct gid_list_info *gid_list;
1278 char *id_iter;
1279 int res, rc, i;
1280 uint16_t entries;
1281
1282 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1283 &gid_list_dma, GFP_KERNEL);
1284 if (!gid_list) {
1285 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1286 "qla_target(%d): DMA Alloc failed of %u\n",
1287 vha->vp_idx, qla2x00_gid_list_size(ha));
1288 return -ENOMEM;
1289 }
1290
1291 /* Get list of logged in devices */
15f30a57 1292 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1293 if (rc != QLA_SUCCESS) {
1294 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1295 "qla_target(%d): get_id_list() failed: %x\n",
1296 vha->vp_idx, rc);
71cdc079 1297 res = -EBUSY;
2d70c103
NB		 1298 goto out_free_id_list;
1299 }
1300
1301 id_iter = (char *)gid_list;
71cdc079 1302 res = -ENOENT;
2d70c103
NB		 1303 for (i = 0; i < entries; i++) {
1304 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1305 if ((gid->al_pa == s_id[2]) &&
1306 (gid->area == s_id[1]) &&
1307 (gid->domain == s_id[0])) {
1308 *loop_id = le16_to_cpu(gid->loop_id);
1309 res = 0;
1310 break;
1311 }
1312 id_iter += ha->gid_list_info_size;
1313 }
1314
1315out_free_id_list:
1316 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1317 gid_list, gid_list_dma);
1318 return res;
1319}
1320
2d70c103
NB		 1321/*
1322 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1323 * Caller must put it.
1324 */
5d964837 1325static struct fc_port *qlt_create_sess(
2d70c103
NB		 1326 struct scsi_qla_host *vha,
1327 fc_port_t *fcport,
1328 bool local)
1329{
1330 struct qla_hw_data *ha = vha->hw;
726b8548 1331 struct fc_port *sess = fcport;
2d70c103 1332 unsigned long flags;
2d70c103 1333
726b8548
QT		 1334 if (vha->vha_tgt.qla_tgt->tgt_stop)
1335 return NULL;
2d70c103 1336
726b8548
QT		 1337 if (fcport->se_sess) {
1338 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1339 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1340 "%s: kref_get_unless_zero failed for %8phC\n",
1341 __func__, sess->port_name);
1342 return NULL;
2d70c103 1343 }
726b8548 1344 return fcport;
2d70c103 1345 }
0e8cd71c 1346 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1347 sess->local = local;
a6ca8878 1348
726b8548
QT		 1349 /*
1350 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1351 * session eventually ends and release corresponding nport handle.
1352 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1353 * code will adjust these flags as necessary.
1354 */
a6ca8878
AP		 1355 sess->logout_on_delete = 1;
1356 sess->keep_nport_handle = 0;
726b8548 1357 sess->logout_completed = 0;
2d70c103 1358
726b8548
QT		 1359 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1360 &fcport->port_name[0], sess) < 0) {
83548fe2 1361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1362 "(%d) %8phC check_initiator_node_acl failed\n",
1363 vha->vp_idx, fcport->port_name);
1364 return NULL;
1365 } else {
1366 kref_init(&fcport->sess_kref);
1367 /*
1368 * Take an extra reference to ->sess_kref here to handle
1369 * fc_port access across ->tgt.sess_lock reaquire.
1370 */
1371 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1372 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1373 "%s: kref_get_unless_zero failed for %8phC\n",
1374 __func__, sess->port_name);
1375 return NULL;
1376 }
2d70c103 1377
726b8548
QT		 1378 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1379 if (!IS_SW_RESV_ADDR(sess->d_id))
1380 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1381
726b8548
QT		 1382 qlt_do_generation_tick(vha, &sess->generation);
1383 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1384 }
1385
1386 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1387 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1388 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1389 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1390
1391 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1392 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1393 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1394 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1395 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1396 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1397
1398 return sess;
1399}
1400
df673274
AP		 1401/*
1402 * max_gen - specifies maximum session generation
1403 * at which this deletion requestion is still valid
1404 */
1405void
1406qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1407{
0e8cd71c 1408 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1409 struct fc_port *sess = fcport;
7560151b 1410 unsigned long flags;
2d70c103
NB		 1411
1412 if (!vha->hw->tgt.tgt_ops)
1413 return;
1414
b2032fd5 1415 if (!tgt)
2d70c103
NB		 1416 return;
1417
7560151b 1418 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1419 if (tgt->tgt_stop) {
7560151b 1420 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1421 return;
1422 }
5d964837 1423 if (!sess->se_sess) {
7560151b 1424 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1425 return;
1426 }
1427
df673274 1428 if (max_gen - sess->generation < 0) {
7560151b 1429 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1431 "Ignoring stale deletion request for se_sess %p / sess %p"
1432 " for port %8phC, req_gen %d, sess_gen %d\n",
1433 sess->se_sess, sess, sess->port_name, max_gen,
1434 sess->generation);
1435 return;
1436 }
1437
2d70c103
NB		 1438 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1439
1440 sess->local = 1;
25062aed 1441 qlt_schedule_sess_for_deletion(sess);
7560151b 1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1443}
1444
1445static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1446{
1447 struct qla_hw_data *ha = tgt->ha;
1448 unsigned long flags;
1449 int res;
1450 /*
1451 * We need to protect against race, when tgt is freed before or
1452 * inside wake_up()
1453 */
726b8548 1454 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1455 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1456 "tgt %p, sess_count=%d\n",
1457 tgt, tgt->sess_count);
2d70c103 1458 res = (tgt->sess_count == 0);
726b8548 1459 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1460
1461 return res;
1462}
1463
1464/* Called by tcm_qla2xxx configfs code */
3c231bda 1465int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1466{
1467 struct scsi_qla_host *vha = tgt->vha;
1468 struct qla_hw_data *ha = tgt->ha;
1469 unsigned long flags;
1470
3c231bda
NB		 1471 mutex_lock(&qla_tgt_mutex);
1472 if (!vha->fc_vport) {
1473 struct Scsi_Host *sh = vha->host;
1474 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1475 bool npiv_vports;
1476
1477 spin_lock_irqsave(sh->host_lock, flags);
1478 npiv_vports = (fc_host->npiv_vports_inuse);
1479 spin_unlock_irqrestore(sh->host_lock, flags);
1480
1481 if (npiv_vports) {
1482 mutex_unlock(&qla_tgt_mutex);
3a33dc95
QT		 1483 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1484 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1485 return -EPERM;
1486 }
1487 }
2d70c103
NB		 1488 if (tgt->tgt_stop || tgt->tgt_stopped) {
1489 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1490 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1491 mutex_unlock(&qla_tgt_mutex);
1492 return -EPERM;
2d70c103
NB		 1493 }
1494
3a33dc95 1495 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1496 vha->host_no, vha);
1497 /*
1498 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1499 * Lock is needed, because we still can get an incoming packet.
1500 */
0e8cd71c 1501 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1502 tgt->tgt_stop = 1;
c5701042 1503 qlt_clear_tgt_db(tgt);
0e8cd71c 1504 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1505 mutex_unlock(&qla_tgt_mutex);
2d70c103 1506
2d70c103
NB		 1507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1508 "Waiting for sess works (tgt %p)", tgt);
1509 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1510 while (!list_empty(&tgt->sess_works_list)) {
1511 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1512 flush_scheduled_work();
1513 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1514 }
1515 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1516
1517 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1518 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1519
b85e0957 1520 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1521
1522 /* Big hammer */
ead03855
QT		 1523 if (!ha->flags.host_shutting_down &&
1524 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1525 qlt_disable_vha(vha);
1526
1527 /* Wait for sessions to clear out (just in case) */
b85e0957 1528 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
3c231bda 1529 return 0;
2d70c103
NB		 1530}
1531EXPORT_SYMBOL(qlt_stop_phase1);
1532
1533/* Called by tcm_qla2xxx configfs code */
1534void qlt_stop_phase2(struct qla_tgt *tgt)
1535{
3a33dc95 1536 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1537
1538 if (tgt->tgt_stopped) {
0e8cd71c 1539 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1540 "Already in tgt->tgt_stopped state\n");
1541 dump_stack();
1542 return;
1543 }
3a33dc95
QT		 1544 if (!tgt->tgt_stop) {
1545 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1546 "%s: phase1 stop is not completed\n", __func__);
1547 dump_stack();
1548 return;
1549 }
2d70c103 1550
0e8cd71c 1551 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1552 tgt->tgt_stop = 0;
1553 tgt->tgt_stopped = 1;
0e8cd71c 1554 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1555
3a33dc95 1556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1557 tgt);
1558}
1559EXPORT_SYMBOL(qlt_stop_phase2);
1560
1561/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1562static void qlt_release(struct qla_tgt *tgt)
2d70c103 1563{
0e8cd71c 1564 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1565 void *node;
1566 u64 key = 0;
1567 u16 i;
1568 struct qla_qpair_hint *h;
bdbe24de 1569 struct qla_hw_data *ha = vha->hw;
2d70c103 1570
3a33dc95
QT		 1571 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1572 !tgt->tgt_stopped)
1573 qlt_stop_phase1(tgt);
1574
0e8cd71c 1575 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1576 qlt_stop_phase2(tgt);
1577
e326d22a
QT		 1578 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1579 unsigned long flags;
1580
1581 h = &tgt->qphints[i];
1582 if (h->qpair) {
1583 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1584 list_del(&h->hint_elem);
1585 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1586 h->qpair = NULL;
1587 }
1588 }
1589 kfree(tgt->qphints);
bdbe24de
QT		 1590 mutex_lock(&qla_tgt_mutex);
1591 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1592 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1593
1594 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1595 btree_remove64(&tgt->lun_qpair_map, key);
1596
1597 btree_destroy64(&tgt->lun_qpair_map);
1598
e4336553
SC		 1599 if (vha->vp_idx)
1600 if (ha->tgt.tgt_ops &&
1601 ha->tgt.tgt_ops->remove_target &&
1602 vha->vha_tgt.target_lport_ptr)
1603 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1604
0e8cd71c 1605 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1606
0e8cd71c 1607 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1608 "Release of tgt %p finished\n", tgt);
1609
1610 kfree(tgt);
1611}
1612
1613/* ha->hardware_lock supposed to be held on entry */
1614static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1615 const void *param, unsigned int param_size)
1616{
1617 struct qla_tgt_sess_work_param *prm;
1618 unsigned long flags;
1619
1620 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1621 if (!prm) {
1622 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1623 "qla_target(%d): Unable to create session "
1624 "work, command will be refused", 0);
1625 return -ENOMEM;
1626 }
1627
1628 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1629 "Scheduling work (type %d, prm %p)"
1630 " to find session for param %p (size %d, tgt %p)\n",
1631 type, prm, param, param_size, tgt);
1632
1633 prm->type = type;
1634 memcpy(&prm->tm_iocb, param, param_size);
1635
1636 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1637 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1638 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1639
1640 schedule_work(&tgt->sess_work);
1641
1642 return 0;
1643}
1644
1645/*
1646 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1647 */
82de802a 1648static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1649 struct imm_ntfy_from_isp *ntfy,
1650 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1651 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1652{
82de802a 1653 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1654 struct qla_hw_data *ha = vha->hw;
1655 request_t *pkt;
1656 struct nack_to_isp *nack;
1657
ec7193e2
QT		 1658 if (!ha->flags.fw_started)
1659 return;
1660
2d70c103
NB		 1661 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1662
82de802a 1663 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1664 if (!pkt) {
1665 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1666 "qla_target(%d): %s failed: unable to allocate "
1667 "request packet\n", vha->vp_idx, __func__);
1668 return;
1669 }
1670
0e8cd71c
SK		 1671 if (vha->vha_tgt.qla_tgt != NULL)
1672 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1673
1674 pkt->entry_type = NOTIFY_ACK_TYPE;
1675 pkt->entry_count = 1;
1676
1677 nack = (struct nack_to_isp *)pkt;
1678 nack->ox_id = ntfy->ox_id;
1679
726b8548 1680 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1681 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1682 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1683 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1684 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1685 }
1686 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1687 nack->u.isp24.status = ntfy->u.isp24.status;
1688 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1689 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1690 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1691 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1692 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1693 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1694 nack->u.isp24.srr_reject_code = srr_reject_code;
1695 nack->u.isp24.srr_reject_code_expl = srr_explan;
1696 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1697
1698 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1699 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1700 vha->vp_idx, nack->u.isp24.status);
1701
63163e06
HM		 1702 /* Memory Barrier */
1703 wmb();
82de802a 1704 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1705}
1706
1707/*
1708 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1709 */
82de802a 1710static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1711 struct abts_recv_from_24xx *abts, uint32_t status,
1712 bool ids_reversed)
1713{
82de802a 1714 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1715 struct qla_hw_data *ha = vha->hw;
1716 struct abts_resp_to_24xx *resp;
1717 uint32_t f_ctl;
1718 uint8_t *p;
1719
1720 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1721 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1722 ha, abts, status);
1723
82de802a
QT		 1724 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1725 NULL);
2d70c103
NB		 1726 if (!resp) {
1727 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1728 "qla_target(%d): %s failed: unable to allocate "
1729 "request packet", vha->vp_idx, __func__);
1730 return;
1731 }
1732
1733 resp->entry_type = ABTS_RESP_24XX;
1734 resp->entry_count = 1;
1735 resp->nport_handle = abts->nport_handle;
1736 resp->vp_index = vha->vp_idx;
1737 resp->sof_type = abts->sof_type;
1738 resp->exchange_address = abts->exchange_address;
1739 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1740 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1741 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1742 F_CTL_SEQ_INITIATIVE);
1743 p = (uint8_t *)&f_ctl;
1744 resp->fcp_hdr_le.f_ctl[0] = *p++;
1745 resp->fcp_hdr_le.f_ctl[1] = *p++;
1746 resp->fcp_hdr_le.f_ctl[2] = *p;
1747 if (ids_reversed) {
1748 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1749 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1750 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1751 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1752 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1753 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1754 } else {
1755 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1756 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1757 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1758 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1759 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1760 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1761 }
1762 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1763 if (status == FCP_TMF_CMPL) {
1764 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1765 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1766 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1767 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1768 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1769 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1770 } else {
1771 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1772 resp->payload.ba_rjt.reason_code =
1773 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1774 /* Other bytes are zero */
1775 }
1776
0e8cd71c 1777 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1778
63163e06
HM		 1779 /* Memory Barrier */
1780 wmb();
8abfa9e2
QT		 1781 if (qpair->reqq_start_iocbs)
1782 qpair->reqq_start_iocbs(qpair);
1783 else
1784 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1785}
1786
1787/*
1788 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1789 */
1790static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1791 struct abts_resp_from_24xx_fw *entry)
1792{
1793 struct ctio7_to_24xx *ctio;
1794
1795 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1796 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
2d70c103 1797
82de802a
QT		 1798 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1799 vha->hw->base_qpair, NULL);
2d70c103
NB		 1800 if (ctio == NULL) {
1801 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1802 "qla_target(%d): %s failed: unable to allocate "
1803 "request packet\n", vha->vp_idx, __func__);
1804 return;
1805 }
1806
1807 /*
1808 * We've got on entrance firmware's response on by us generated
1809 * ABTS response. So, in it ID fields are reversed.
1810 */
1811
1812 ctio->entry_type = CTIO_TYPE7;
1813 ctio->entry_count = 1;
1814 ctio->nport_handle = entry->nport_handle;
1815 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1816 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1817 ctio->vp_index = vha->vp_idx;
1818 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1819 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1820 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1821 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1822 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1823 CTIO7_FLAGS_TERMINATE);
33a5fcee 1824 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1825
63163e06
HM		 1826 /* Memory Barrier */
1827 wmb();
2d70c103
NB		 1828 qla2x00_start_iocbs(vha, vha->req);
1829
82de802a
QT		 1830 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1831 (struct abts_recv_from_24xx *)entry,
2d70c103
NB		 1832 FCP_TMF_CMPL, true);
1833}
1834
8b2f5ff3
SN		 1835static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1836{
1837 struct qla_tgt_sess_op *op;
1838 struct qla_tgt_cmd *cmd;
8b631d87 1839 unsigned long flags;
8b2f5ff3 1840
8b631d87 1841 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1842 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1843 if (tag == op->atio.u.isp24.exchange_addr) {
1844 op->aborted = true;
8b631d87 1845 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1846 return 1;
1847 }
1848 }
1849
41dc529a
QT		 1850 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1851 if (tag == op->atio.u.isp24.exchange_addr) {
1852 op->aborted = true;
8b631d87 1853 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1854 return 1;
1855 }
1856 }
1857
8b2f5ff3
SN		 1858 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1859 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1860 cmd->aborted = 1;
8b631d87 1861 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1862 return 1;
1863 }
1864 }
8b631d87 1865 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1866
8b2f5ff3
SN		 1867 return 0;
1868}
1869
1870/* drop cmds for the given lun
1871 * XXX only looks for cmds on the port through which lun reset was recieved
1872 * XXX does not go through the list of other port (which may have cmds
1873 * for the same lun)
1874 */
1875static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1876 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1877{
1878 struct qla_tgt_sess_op *op;
1879 struct qla_tgt_cmd *cmd;
1880 uint32_t key;
8b631d87 1881 unsigned long flags;
8b2f5ff3
SN		 1882
1883 key = sid_to_key(s_id);
8b631d87 1884 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1885 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1886 uint32_t op_key;
f775bd14 1887 u64 op_lun;
8b2f5ff3
SN		 1888
1889 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1890 op_lun = scsilun_to_int(
1891 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1892 if (op_key == key && op_lun == lun)
1893 op->aborted = true;
1894 }
41dc529a
QT		 1895
1896 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1897 uint32_t op_key;
1898 u64 op_lun;
1899
1900 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1901 op_lun = scsilun_to_int(
1902 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1903 if (op_key == key && op_lun == lun)
1904 op->aborted = true;
1905 }
1906
8b2f5ff3
SN		 1907 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1908 uint32_t cmd_key;
f775bd14 1909 u64 cmd_lun;
8b2f5ff3
SN		 1910
1911 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1912 cmd_lun = scsilun_to_int(
1913 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1914 if (cmd_key == key && cmd_lun == lun)
193b50b9 1915 cmd->aborted = 1;
8b2f5ff3 1916 }
8b631d87 1917 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1918}
1919
2d70c103
NB		 1920/* ha->hardware_lock supposed to be held on entry */
1921static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1922 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1923{
1924 struct qla_hw_data *ha = vha->hw;
1925 struct qla_tgt_mgmt_cmd *mcmd;
1926 int rc;
06e97b48 1927
eb5ae233
NB		 1928 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1929 /* send TASK_ABORT response immediately */
48ea2ced 1930 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
eb5ae233 1931 return 0;
8b2f5ff3 1932 }
2d70c103
NB		 1933
1934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1935 "qla_target(%d): task abort (tag=%d)\n",
1936 vha->vp_idx, abts->exchange_addr_to_abort);
1937
1938 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1939 if (mcmd == NULL) {
1940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1941 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1942 vha->vp_idx, __func__);
1943 return -ENOMEM;
1944 }
1945 memset(mcmd, 0, sizeof(*mcmd));
1946
1947 mcmd->sess = sess;
1948 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 1949 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 1950 mcmd->tmr_func = QLA_TGT_ABTS;
82de802a 1951 mcmd->qpair = ha->base_qpair;
72fcd4eb 1952 mcmd->vha = vha;
2d70c103 1953
eb5ae233
NB		 1954 /*
1955 * LUN is looked up by target-core internally based on the passed
1956 * abts->exchange_addr_to_abort tag.
1957 */
1958 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
2d70c103
NB		 1959 abts->exchange_addr_to_abort);
1960 if (rc != 0) {
1961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1962 "qla_target(%d): tgt_ops->handle_tmr()"
1963 " failed: %d", vha->vp_idx, rc);
1964 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1965 return -EFAULT;
1966 }
1967
1968 return 0;
1969}
1970
1971/*
1972 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1973 */
1974static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1975 struct abts_recv_from_24xx *abts)
1976{
1977 struct qla_hw_data *ha = vha->hw;
5d964837 1978 struct fc_port *sess;
2d70c103
NB		 1979 uint32_t tag = abts->exchange_addr_to_abort;
1980 uint8_t s_id[3];
1981 int rc;
7560151b 1982 unsigned long flags;
2d70c103
NB		 1983
1984 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
1985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
1986 "qla_target(%d): ABTS: Abort Sequence not "
1987 "supported\n", vha->vp_idx);
82de802a
QT		 1988 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1989 false);
2d70c103
NB		 1990 return;
1991 }
1992
1993 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
1994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
1995 "qla_target(%d): ABTS: Unknown Exchange "
1996 "Address received\n", vha->vp_idx);
82de802a
QT		 1997 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
1998 false);
2d70c103
NB		 1999 return;
2000 }
2001
2002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2003 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2004 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2005 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2006 le32_to_cpu(abts->fcp_hdr_le.parameter));
2007
2008 s_id[0] = abts->fcp_hdr_le.s_id[2];
2009 s_id[1] = abts->fcp_hdr_le.s_id[1];
2010 s_id[2] = abts->fcp_hdr_le.s_id[0];
2011
7560151b 2012 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 2013 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2014 if (!sess) {
2015 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2016 "qla_target(%d): task abort for non-existant session\n",
2017 vha->vp_idx);
0e8cd71c 2018 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103 2019 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
7560151b
QT		 2020
2021 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2022
2d70c103 2023 if (rc != 0) {
82de802a
QT		 2024 qlt_24xx_send_abts_resp(ha->base_qpair, abts,
2025 FCP_TMF_REJECTED, false);
2d70c103
NB		 2026 }
2027 return;
2028 }
7560151b
QT		 2029 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2030
2d70c103 2031
726b8548 2032 if (sess->deleted) {
82de802a
QT		 2033 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2034 false);
e52a8b45
AP		 2035 return;
2036 }
2037
2d70c103
NB		 2038 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2039 if (rc != 0) {
2040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2041 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2042 vha->vp_idx, rc);
82de802a
QT		 2043 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2044 false);
2d70c103
NB		 2045 return;
2046 }
2047}
2048
2049/*
2050 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2051 */
82de802a 2052static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2053 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2054{
72fcd4eb 2055 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2056 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2057 struct ctio7_to_24xx *ctio;
33a5fcee 2058 uint16_t temp;
2d70c103
NB		 2059
2060 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2061 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2062 ha, atio, resp_code);
2063
2d70c103 2064
82de802a 2065 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2066 if (ctio == NULL) {
2067 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2068 "qla_target(%d): %s failed: unable to allocate "
2069 "request packet\n", ha->vp_idx, __func__);
2070 return;
2071 }
2072
2073 ctio->entry_type = CTIO_TYPE7;
2074 ctio->entry_count = 1;
2075 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2076 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2077 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2078 ctio->vp_index = ha->vp_idx;
2079 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2080 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2081 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2082 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2083 temp = (atio->u.isp24.attr << 9)|
2084 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2085 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2086 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2087 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2088 ctio->u.status1.scsi_status =
ad950360
BVA		 2089 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2090 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2091 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2092
63163e06
HM		 2093 /* Memory Barrier */
2094 wmb();
8abfa9e2
QT		 2095 if (qpair->reqq_start_iocbs)
2096 qpair->reqq_start_iocbs(qpair);
2097 else
2098 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2099}
2100
2101void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2102{
2103 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2104}
2105EXPORT_SYMBOL(qlt_free_mcmd);
2106
be25152c
QT		 2107/*
2108 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2109 * reacquire
2110 */
8abfa9e2 2111void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2112 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2113{
2114 struct atio_from_isp *atio = &cmd->atio;
2115 struct ctio7_to_24xx *ctio;
2116 uint16_t temp;
8abfa9e2 2117 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2118
2119 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2120 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2121 "sense_key=%02x, asc=%02x, ascq=%02x",
2122 vha, atio, scsi_status, sense_key, asc, ascq);
2123
2124 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2125 if (!ctio) {
2126 ql_dbg(ql_dbg_async, vha, 0x3067,
2127 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2128 vha->host_no, __func__);
2129 goto out;
2130 }
2131
2132 ctio->entry_type = CTIO_TYPE7;
2133 ctio->entry_count = 1;
2134 ctio->handle = QLA_TGT_SKIP_HANDLE;
2135 ctio->nport_handle = cmd->sess->loop_id;
2136 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2137 ctio->vp_index = vha->vp_idx;
2138 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2139 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2140 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2141 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2142 temp = (atio->u.isp24.attr << 9) |
2143 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2144 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2145 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2146 ctio->u.status1.ox_id = cpu_to_le16(temp);
2147 ctio->u.status1.scsi_status =
2148 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2149 ctio->u.status1.response_len = cpu_to_le16(18);
2150 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2151
2152 if (ctio->u.status1.residual != 0)
2153 ctio->u.status1.scsi_status |=
2154 cpu_to_le16(SS_RESIDUAL_UNDER);
2155
5c3b3f0e
BVA		 2156 /* Fixed format sense data. */
2157 ctio->u.status1.sense_data[0] = 0x70;
2158 ctio->u.status1.sense_data[2] = sense_key;
be25152c 2159 /* Additional sense length */
5c3b3f0e 2160 ctio->u.status1.sense_data[7] = 0xa;
be25152c 2161 /* ASC and ASCQ */
5c3b3f0e
BVA		 2162 ctio->u.status1.sense_data[12] = asc;
2163 ctio->u.status1.sense_data[13] = ascq;
be25152c
QT		 2164
2165 /* Memory Barrier */
2166 wmb();
2167
8abfa9e2
QT		 2168 if (qpair->reqq_start_iocbs)
2169 qpair->reqq_start_iocbs(qpair);
2170 else
2171 qla2x00_start_iocbs(vha, qpair->req);
2172
be25152c
QT		 2173out:
2174 return;
2175}
2176
2d70c103
NB		 2177/* callback from target fabric module code */
2178void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2179{
2180 struct scsi_qla_host *vha = mcmd->sess->vha;
2181 struct qla_hw_data *ha = vha->hw;
2182 unsigned long flags;
82de802a 2183 struct qla_qpair *qpair = mcmd->qpair;
2d70c103
NB		 2184
2185 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2186 "TM response mcmd (%p) status %#x state %#x",
2187 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2188
82de802a 2189 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2190
7c3f8fd1 2191 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2192 /*
3bb67df5 2193 * Either the port is not online or this request was from
b6a029e1
AE		 2194 * previous life, just abort the processing.
2195 */
2196 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2197 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2198 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2199 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2200 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2201 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2202 return;
2203 }
2204
726b8548
QT		 2205 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2206 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2207 ELS_LOGO ||
2208 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2209 ELS_PRLO ||
2210 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2211 ELS_TPRLO) {
83548fe2 2212 ql_dbg(ql_dbg_disc, vha, 0x2106,
7455f405 2213 "TM response logo %8phC status %#x state %#x",
726b8548
QT		 2214 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2215 mcmd->flags);
147c591f 2216 qlt_schedule_sess_for_deletion(mcmd->sess);
726b8548 2217 } else {
82de802a
QT		 2218 qlt_send_notify_ack(vha->hw->base_qpair,
2219 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
726b8548
QT		 2220 }
2221 } else {
d7236ac3 2222 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
82de802a 2223 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2d70c103
NB		 2224 mcmd->fc_tm_rsp, false);
2225 else
82de802a 2226 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2227 mcmd->fc_tm_rsp);
2228 }
2229 /*
2230 * Make the callback for ->free_mcmd() to queue_work() and invoke
2231 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2232 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2233 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2234 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2235 * qlt_xmit_tm_rsp() returns here..
2236 */
2237 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2238 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2239}
2240EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2241
2242/* No locks */
2243static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2244{
2245 struct qla_tgt_cmd *cmd = prm->cmd;
2246
2247 BUG_ON(cmd->sg_cnt == 0);
2248
2249 prm->sg = (struct scatterlist *)cmd->sg;
8abfa9e2 2250 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2d70c103
NB		 2251 cmd->sg_cnt, cmd->dma_data_direction);
2252 if (unlikely(prm->seg_cnt == 0))
2253 goto out_err;
2254
2255 prm->cmd->sg_mapped = 1;
2256
f83adb61
QT		 2257 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2258 /*
2259 * If greater than four sg entries then we need to allocate
2260 * the continuation entries
2261 */
b5399f7d 2262 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2263 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2264 QLA_TGT_DATASEGS_PER_CMD_24XX,
2265 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2266 } else {
2267 /* DIF */
2268 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2269 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2270 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2271 prm->tot_dsds = prm->seg_cnt;
2272 } else
2273 prm->tot_dsds = prm->seg_cnt;
2274
2275 if (cmd->prot_sg_cnt) {
2276 prm->prot_sg = cmd->prot_sg;
8abfa9e2 2277 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
f83adb61
QT		 2278 cmd->prot_sg, cmd->prot_sg_cnt,
2279 cmd->dma_data_direction);
2280 if (unlikely(prm->prot_seg_cnt == 0))
2281 goto out_err;
2282
2283 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2284 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2285 /* Dif Bundling not support here */
2286 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2287 cmd->blk_sz);
2288 prm->tot_dsds += prm->prot_seg_cnt;
2289 } else
2290 prm->tot_dsds += prm->prot_seg_cnt;
2291 }
2292 }
2d70c103 2293
2d70c103
NB		 2294 return 0;
2295
2296out_err:
22d84726 2297 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2298 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2299 0, prm->cmd->sg_cnt);
2300 return -1;
2301}
2302
f9b6721a 2303static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2304{
8abfa9e2
QT		 2305 struct qla_hw_data *ha;
2306 struct qla_qpair *qpair;
f9b6721a
JE		 2307 if (!cmd->sg_mapped)
2308 return;
2309
8abfa9e2
QT		 2310 qpair = cmd->qpair;
2311
2312 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2313 cmd->dma_data_direction);
2d70c103 2314 cmd->sg_mapped = 0;
f83adb61
QT		 2315
2316 if (cmd->prot_sg_cnt)
8abfa9e2 2317 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2318 cmd->dma_data_direction);
2319
d5ff0eed
JC		 2320 if (!cmd->ctx)
2321 return;
8abfa9e2 2322 ha = vha->hw;
f83adb61 2323 if (cmd->ctx_dsd_alloced)
d5ff0eed 2324 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2325
d5ff0eed 2326 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2327}
2328
82de802a 2329static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2330 uint32_t req_cnt)
2331{
d63b328f 2332 uint32_t cnt;
82de802a 2333 struct req_que *req = qpair->req;
2d70c103 2334
82de802a 2335 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2336 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2337 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2338
82de802a
QT		 2339 if (req->ring_index < cnt)
2340 req->cnt = cnt - req->ring_index;
2d70c103 2341 else
82de802a 2342 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2343
82de802a 2344 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2345 return -EAGAIN;
2d70c103 2346 }
bc7095a9 2347
82de802a 2348 req->cnt -= req_cnt;
2d70c103
NB		 2349
2350 return 0;
2351}
2352
2353/*
2354 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2355 */
82de802a 2356static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2357{
2358 /* Adjust ring index. */
82de802a
QT		 2359 req->ring_index++;
2360 if (req->ring_index == req->length) {
2361 req->ring_index = 0;
2362 req->ring_ptr = req->ring;
2d70c103 2363 } else {
82de802a 2364 req->ring_ptr++;
2d70c103 2365 }
82de802a 2366 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2367}
2368
2369/* ha->hardware_lock supposed to be held on entry */
82de802a 2370static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2371{
2d70c103 2372 uint32_t h;
c5419e26
QT		 2373 int index;
2374 uint8_t found = 0;
82de802a 2375 struct req_que *req = qpair->req;
c5419e26
QT		 2376
2377 h = req->current_outstanding_cmd;
2d70c103 2378
c5419e26
QT		 2379 for (index = 1; index < req->num_outstanding_cmds; index++) {
2380 h++;
2381 if (h == req->num_outstanding_cmds)
2382 h = 1;
2383
2384 if (h == QLA_TGT_SKIP_HANDLE)
2385 continue;
2386
2387 if (!req->outstanding_cmds[h]) {
2388 found = 1;
2d70c103
NB		 2389 break;
2390 }
c5419e26 2391 }
2d70c103 2392
c5419e26
QT		 2393 if (found) {
2394 req->current_outstanding_cmd = h;
2395 } else {
8abfa9e2
QT		 2396 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2397 "qla_target(%d): Ran out of empty cmd slots\n",
2398 qpair->vha->vp_idx);
c5419e26
QT		 2399 h = QLA_TGT_NULL_HANDLE;
2400 }
2d70c103
NB		 2401
2402 return h;
2403}
2404
2405/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2406static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2407 struct qla_tgt_prm *prm)
2d70c103
NB		 2408{
2409 uint32_t h;
2410 struct ctio7_to_24xx *pkt;
2d70c103 2411 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2412 uint16_t temp;
2d70c103 2413
82de802a 2414 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2415 prm->pkt = pkt;
2416 memset(pkt, 0, sizeof(*pkt));
2417
2418 pkt->entry_type = CTIO_TYPE7;
2419 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2420 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2421
82de802a 2422 h = qlt_make_handle(qpair);
2d70c103
NB		 2423 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2424 /*
2425 * CTIO type 7 from the firmware doesn't provide a way to
2426 * know the initiator's LOOP ID, hence we can't find
2427 * the session and, so, the command.
2428 */
2429 return -EAGAIN;
e326d22a
QT		 2430 } else
2431 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2432
82de802a
QT		 2433 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2434 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2435 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2436 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2437 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2438 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2439 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2440 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2441 temp = atio->u.isp24.attr << 9;
2442 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2443 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2444 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2445 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2446
2d70c103
NB		 2447 return 0;
2448}
2449
2450/*
2451 * ha->hardware_lock supposed to be held on entry. We have already made sure
2452 * that there is sufficient amount of request entries to not drop it.
2453 */
32d29b4c 2454static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2455{
2456 int cnt;
2457 uint32_t *dword_ptr;
2d70c103
NB		 2458
2459 /* Build continuation packets */
2460 while (prm->seg_cnt > 0) {
2461 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2462 (cont_a64_entry_t *)qlt_get_req_pkt(
2463 prm->cmd->qpair->req);
2d70c103
NB		 2464
2465 /*
2466 * Make sure that from cont_pkt64 none of
2467 * 64-bit specific fields used for 32-bit
2468 * addressing. Cast to (cont_entry_t *) for
2469 * that.
2470 */
2471
2472 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2473
2474 cont_pkt64->entry_count = 1;
2475 cont_pkt64->sys_define = 0;
2476
32d29b4c
QT		 2477 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2478 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2d70c103
NB		 2479
2480 /* Load continuation entry data segments */
2481 for (cnt = 0;
b5399f7d 2482 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103
NB		 2483 cnt++, prm->seg_cnt--) {
2484 *dword_ptr++ =
2485 cpu_to_le32(pci_dma_lo32
2486 (sg_dma_address(prm->sg)));
32d29b4c
QT		 2487 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2488 (sg_dma_address(prm->sg)));
2d70c103
NB		 2489 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2490
2d70c103
NB		 2491 prm->sg = sg_next(prm->sg);
2492 }
2493 }
2494}
2495
2496/*
2497 * ha->hardware_lock supposed to be held on entry. We have already made sure
2498 * that there is sufficient amount of request entries to not drop it.
2499 */
32d29b4c 2500static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2501{
2502 int cnt;
2503 uint32_t *dword_ptr;
2d70c103
NB		 2504 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2505
2d70c103
NB		 2506 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2507
2508 /* Setup packet address segment pointer */
2509 dword_ptr = pkt24->u.status0.dseg_0_address;
2510
2511 /* Set total data segment count */
2512 if (prm->seg_cnt)
2513 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2514
2515 if (prm->seg_cnt == 0) {
2516 /* No data transfer */
2517 *dword_ptr++ = 0;
2518 *dword_ptr = 0;
2519 return;
2520 }
2521
2522 /* If scatter gather */
2d70c103
NB		 2523
2524 /* Load command entry data segments */
2525 for (cnt = 0;
b5399f7d 2526 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103
NB		 2527 cnt++, prm->seg_cnt--) {
2528 *dword_ptr++ =
2529 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
32d29b4c
QT		 2530
2531 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2532 sg_dma_address(prm->sg)));
2533
2d70c103
NB		 2534 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2535
2d70c103
NB		 2536 prm->sg = sg_next(prm->sg);
2537 }
2538
32d29b4c 2539 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2540}
2541
2542static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2543{
2544 return cmd->bufflen > 0;
2545}
2546
be25152c
QT		 2547static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2548{
2549 struct qla_tgt_cmd *cmd;
2550 struct scsi_qla_host *vha;
2551
2552 /* asc 0x10=dif error */
2553 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2554 cmd = prm->cmd;
2555 vha = cmd->vha;
2556 /* ASCQ */
2557 switch (prm->sense_buffer[13]) {
2558 case 1:
83548fe2 2559 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2560 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2561 "se_cmd=%p tag[%x]",
2562 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2563 cmd->atio.u.isp24.exchange_addr);
2564 break;
2565 case 2:
83548fe2 2566 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2567 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2568 "se_cmd=%p tag[%x]",
2569 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2570 cmd->atio.u.isp24.exchange_addr);
2571 break;
2572 case 3:
83548fe2 2573 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2574 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2575 "se_cmd=%p tag[%x]",
2576 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2577 cmd->atio.u.isp24.exchange_addr);
2578 break;
2579 default:
83548fe2 2580 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2581 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2582 "se_cmd=%p tag[%x]",
2583 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2584 cmd->atio.u.isp24.exchange_addr);
2585 break;
2586 }
83548fe2 2587 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2588 }
2589}
2590
2d70c103
NB		 2591/*
2592 * Called without ha->hardware_lock held
2593 */
2594static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2595 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2596 uint32_t *full_req_cnt)
2597{
2d70c103 2598 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2599 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2600
2d70c103 2601 prm->cmd = cmd;
7c3f8fd1
QT		 2602 prm->tgt = cmd->tgt;
2603 prm->pkt = NULL;
2d70c103
NB		 2604 prm->rq_result = scsi_status;
2605 prm->sense_buffer = &cmd->sense_buffer[0];
2606 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2607 prm->sg = NULL;
2608 prm->seg_cnt = -1;
2609 prm->req_cnt = 1;
7c3f8fd1 2610 prm->residual = 0;
2d70c103 2611 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2612 prm->prot_sg = NULL;
2613 prm->prot_seg_cnt = 0;
2614 prm->tot_dsds = 0;
2d70c103 2615
2d70c103
NB		 2616 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2617 if (qlt_pci_map_calc_cnt(prm) != 0)
2618 return -EAGAIN;
2619 }
2620
2621 *full_req_cnt = prm->req_cnt;
2622
2623 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2624 prm->residual = se_cmd->residual_count;
22d84726 2625 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2626 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2627 prm->residual, se_cmd->tag,
2628 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2629 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2630 prm->rq_result |= SS_RESIDUAL_UNDER;
2631 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2632 prm->residual = se_cmd->residual_count;
22d84726 2633 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2634 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2635 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2636 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2637 prm->rq_result |= SS_RESIDUAL_OVER;
2638 }
2639
2640 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2641 /*
2642 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2643 * ignored in *xmit_response() below
2644 */
2645 if (qlt_has_data(cmd)) {
2646 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2647 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2648 (prm->rq_result != 0))) {
2649 prm->add_status_pkt = 1;
2650 (*full_req_cnt)++;
2651 }
2652 }
2653 }
2654
2d70c103
NB		 2655 return 0;
2656}
2657
7c3f8fd1
QT		 2658static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2659 int sending_sense)
2d70c103 2660{
7c3f8fd1 2661 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2662 return 0;
2663
2664 if (sending_sense)
2665 return cmd->conf_compl_supported;
2666 else
7c3f8fd1
QT		 2667 return cmd->qpair->enable_explicit_conf &&
2668 cmd->conf_compl_supported;
2d70c103
NB		 2669}
2670
2d70c103
NB		 2671static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2672 struct qla_tgt_prm *prm)
2673{
2674 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2675 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2676 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2677 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2678 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2679 CTIO7_FLAGS_EXPLICIT_CONFORM |
2680 CTIO7_FLAGS_CONFORM_REQ);
2681 }
2682 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2683 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2684 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2685 int i;
2686
7c3f8fd1 2687 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2688 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2689 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2690 "Skipping EXPLICIT_CONFORM and "
2691 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2692 "non GOOD status\n");
2693 goto skip_explict_conf;
2694 }
ad950360 2695 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2696 CTIO7_FLAGS_EXPLICIT_CONFORM |
2697 CTIO7_FLAGS_CONFORM_REQ);
2698 }
2699skip_explict_conf:
2700 ctio->u.status1.flags &=
ad950360 2701 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2702 ctio->u.status1.flags |=
ad950360 2703 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2704 ctio->u.status1.scsi_status |=
ad950360 2705 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2706 ctio->u.status1.sense_length =
2707 cpu_to_le16(prm->sense_buffer_len);
2708 for (i = 0; i < prm->sense_buffer_len/4; i++)
2709 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2710 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2711
2712 qlt_print_dif_err(prm);
2713
2d70c103
NB		 2714 } else {
2715 ctio->u.status1.flags &=
ad950360 2716 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2717 ctio->u.status1.flags |=
ad950360 2718 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2719 ctio->u.status1.sense_length = 0;
2720 memset(ctio->u.status1.sense_data, 0,
2721 sizeof(ctio->u.status1.sense_data));
2722 }
2723
2724 /* Sense with len > 24, is it possible ??? */
2725}
2726
f83adb61
QT		 2727static inline int
2728qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2729{
f83adb61
QT		 2730 switch (se_cmd->prot_op) {
2731 case TARGET_PROT_DOUT_INSERT:
2732 case TARGET_PROT_DIN_STRIP:
2733 if (ql2xenablehba_err_chk >= 1)
2734 return 1;
2735 break;
2736 case TARGET_PROT_DOUT_PASS:
2737 case TARGET_PROT_DIN_PASS:
2738 if (ql2xenablehba_err_chk >= 2)
2739 return 1;
2740 break;
2741 case TARGET_PROT_DIN_INSERT:
2742 case TARGET_PROT_DOUT_STRIP:
2743 return 1;
2744 default:
2745 break;
2746 }
2747 return 0;
2748}
2749
be25152c
QT		 2750static inline int
2751qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2752{
2753 switch (se_cmd->prot_op) {
2754 case TARGET_PROT_DIN_INSERT:
2755 case TARGET_PROT_DOUT_INSERT:
2756 case TARGET_PROT_DIN_STRIP:
2757 case TARGET_PROT_DOUT_STRIP:
2758 case TARGET_PROT_DIN_PASS:
2759 case TARGET_PROT_DOUT_PASS:
2760 return 1;
2761 default:
2762 return 0;
2763 }
2764 return 0;
2765}
2766
f83adb61 2767/*
be25152c 2768 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2769 */
be25152c
QT		 2770static void
2771qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2772 uint16_t *pfw_prot_opts)
f83adb61 2773{
be25152c 2774 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2775 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2776 scsi_qla_host_t *vha = cmd->tgt->vha;
2777 struct qla_hw_data *ha = vha->hw;
2778 uint32_t t32 = 0;
f83adb61 2779
be25152c
QT		 2780 /*
2781 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2782 * have been immplemented by TCM, before AppTag is avail.
2783 * Look for modesense_handlers[]
2784 */
c7ee3bd4 2785 ctx->app_tag = 0;
f83adb61
QT		 2786 ctx->app_tag_mask[0] = 0x0;
2787 ctx->app_tag_mask[1] = 0x0;
2788
be25152c
QT		 2789 if (IS_PI_UNINIT_CAPABLE(ha)) {
2790 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2791 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2792 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2793 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2794 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2795 }
2796
2797 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2798
f83adb61
QT		 2799 switch (se_cmd->prot_type) {
2800 case TARGET_DIF_TYPE0_PROT:
2801 /*
be25152c
QT		 2802 * No check for ql2xenablehba_err_chk, as it
2803 * would be an I/O error if hba tag generation
2804 * is not done.
f83adb61
QT		 2805 */
2806 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2807 /* enable ALL bytes of the ref tag */
2808 ctx->ref_tag_mask[0] = 0xff;
2809 ctx->ref_tag_mask[1] = 0xff;
2810 ctx->ref_tag_mask[2] = 0xff;
2811 ctx->ref_tag_mask[3] = 0xff;
2812 break;
f83adb61 2813 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2814 /*
2815 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2816 * REF tag, and 16 bit app tag.
2817 */
2818 ctx->ref_tag = cpu_to_le32(lba);
2819 if (!qla_tgt_ref_mask_check(se_cmd) ||
2820 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2821 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2822 break;
2823 }
2824 /* enable ALL bytes of the ref tag */
2825 ctx->ref_tag_mask[0] = 0xff;
2826 ctx->ref_tag_mask[1] = 0xff;
2827 ctx->ref_tag_mask[2] = 0xff;
2828 ctx->ref_tag_mask[3] = 0xff;
2829 break;
f83adb61 2830 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2831 /*
2832 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2833 * tag has to match LBA in CDB + N
2834 */
2835 ctx->ref_tag = cpu_to_le32(lba);
2836 if (!qla_tgt_ref_mask_check(se_cmd) ||
2837 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2838 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2839 break;
2840 }
2841 /* enable ALL bytes of the ref tag */
2842 ctx->ref_tag_mask[0] = 0xff;
2843 ctx->ref_tag_mask[1] = 0xff;
2844 ctx->ref_tag_mask[2] = 0xff;
2845 ctx->ref_tag_mask[3] = 0xff;
2846 break;
f83adb61 2847 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2848 /* For TYPE 3 protection: 16 bit GUARD only */
2849 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2850 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2851 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2852 break;
f83adb61
QT		 2853 }
2854}
2855
f83adb61 2856static inline int
82de802a 2857qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61
QT		 2858{
2859 uint32_t *cur_dsd;
f83adb61
QT		 2860 uint32_t transfer_length = 0;
2861 uint32_t data_bytes;
2862 uint32_t dif_bytes;
2863 uint8_t bundling = 1;
2864 uint8_t *clr_ptr;
2865 struct crc_context *crc_ctx_pkt = NULL;
2866 struct qla_hw_data *ha;
2867 struct ctio_crc2_to_fw *pkt;
2868 dma_addr_t crc_ctx_dma;
2869 uint16_t fw_prot_opts = 0;
2870 struct qla_tgt_cmd *cmd = prm->cmd;
2871 struct se_cmd *se_cmd = &cmd->se_cmd;
2872 uint32_t h;
2873 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2874 struct qla_tc_param tc;
c7ee3bd4 2875 uint16_t t16;
82de802a 2876 scsi_qla_host_t *vha = cmd->vha;
f83adb61 2877
f83adb61
QT		 2878 ha = vha->hw;
2879
82de802a 2880 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 2881 prm->pkt = pkt;
2882 memset(pkt, 0, sizeof(*pkt));
2883
22d84726 2884 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 2885 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 2886 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 2887 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2888
2889 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2890 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2891 bundling = 0;
2892
2893 /* Compute dif len and adjust data len to incude protection */
2894 data_bytes = cmd->bufflen;
2895 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2896
2897 switch (se_cmd->prot_op) {
2898 case TARGET_PROT_DIN_INSERT:
2899 case TARGET_PROT_DOUT_STRIP:
2900 transfer_length = data_bytes;
be25152c
QT		 2901 if (cmd->prot_sg_cnt)
2902 data_bytes += dif_bytes;
f83adb61 2903 break;
f83adb61
QT		 2904 case TARGET_PROT_DIN_STRIP:
2905 case TARGET_PROT_DOUT_INSERT:
2906 case TARGET_PROT_DIN_PASS:
2907 case TARGET_PROT_DOUT_PASS:
2908 transfer_length = data_bytes + dif_bytes;
2909 break;
f83adb61
QT		 2910 default:
2911 BUG();
2912 break;
2913 }
2914
2915 if (!qlt_hba_err_chk_enabled(se_cmd))
2916 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2917 /* HBA error checking enabled */
2918 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2919 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2920 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2921 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2922 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2923 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2924 }
2925
2926 switch (se_cmd->prot_op) {
2927 case TARGET_PROT_DIN_INSERT:
2928 case TARGET_PROT_DOUT_INSERT:
2929 fw_prot_opts |= PO_MODE_DIF_INSERT;
2930 break;
2931 case TARGET_PROT_DIN_STRIP:
2932 case TARGET_PROT_DOUT_STRIP:
2933 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2934 break;
2935 case TARGET_PROT_DIN_PASS:
2936 case TARGET_PROT_DOUT_PASS:
2937 fw_prot_opts |= PO_MODE_DIF_PASS;
2938 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2939 break;
2940 default:/* Normal Request */
2941 fw_prot_opts |= PO_MODE_DIF_PASS;
2942 break;
2943 }
2944
f83adb61
QT		 2945 /* ---- PKT ---- */
2946 /* Update entry type to indicate Command Type CRC_2 IOCB */
2947 pkt->entry_type = CTIO_CRC2;
2948 pkt->entry_count = 1;
22d84726 2949 pkt->vp_index = cmd->vp_idx;
f83adb61 2950
82de802a 2951 h = qlt_make_handle(qpair);
f83adb61
QT		 2952 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2953 /*
2954 * CTIO type 7 from the firmware doesn't provide a way to
2955 * know the initiator's LOOP ID, hence we can't find
2956 * the session and, so, the command.
2957 */
2958 return -EAGAIN;
2959 } else
82de802a 2960 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 2961
82de802a
QT		 2962 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2963 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 2964 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2965 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2966 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2967 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2968 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2969 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2970
2971 /* silence compile warning */
2972 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2973 pkt->ox_id = cpu_to_le16(t16);
2974
2975 t16 = (atio->u.isp24.attr << 9);
2976 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2977 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2978
2979 /* Set transfer direction */
2980 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2981 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2982 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2983 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2984
f83adb61
QT		 2985 pkt->dseg_count = prm->tot_dsds;
2986 /* Fibre channel byte count */
2987 pkt->transfer_length = cpu_to_le32(transfer_length);
2988
f83adb61
QT		 2989 /* ----- CRC context -------- */
2990
2991 /* Allocate CRC context from global pool */
2992 crc_ctx_pkt = cmd->ctx =
2993 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
2994
2995 if (!crc_ctx_pkt)
2996 goto crc_queuing_error;
2997
2998 /* Zero out CTX area. */
2999 clr_ptr = (uint8_t *)crc_ctx_pkt;
3000 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
3001
3002 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3003 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3004
3005 /* Set handle */
3006 crc_ctx_pkt->handle = pkt->handle;
3007
be25152c 3008 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 3009
3010 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3011 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3012 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3013
f83adb61
QT		 3014 if (!bundling) {
3015 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3016 } else {
3017 /*
3018 * Configure Bundling if we need to fetch interlaving
3019 * protection PCI accesses
3020 */
3021 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3022 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3023 crc_ctx_pkt->u.bundling.dseg_count =
3024 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3025 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3026 }
3027
3028 /* Finish the common fields of CRC pkt */
3029 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3030 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3031 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3032 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3033
be25152c
QT		 3034 memset((uint8_t *)&tc, 0 , sizeof(tc));
3035 tc.vha = vha;
3036 tc.blk_sz = cmd->blk_sz;
3037 tc.bufflen = cmd->bufflen;
3038 tc.sg = cmd->sg;
3039 tc.prot_sg = cmd->prot_sg;
3040 tc.ctx = crc_ctx_pkt;
3041 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3042
3043 /* Walks data segments */
ad950360 3044 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3045
3046 if (!bundling && prm->prot_seg_cnt) {
3047 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3048 prm->tot_dsds, &tc))
f83adb61
QT		 3049 goto crc_queuing_error;
3050 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3051 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3052 goto crc_queuing_error;
3053
3054 if (bundling && prm->prot_seg_cnt) {
3055 /* Walks dif segments */
c7ee3bd4 3056 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 3057
3058 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3059 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 3060 prm->prot_seg_cnt, &tc))
f83adb61
QT		 3061 goto crc_queuing_error;
3062 }
3063 return QLA_SUCCESS;
3064
3065crc_queuing_error:
3066 /* Cleanup will be performed by the caller */
82de802a 3067 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3068
3069 return QLA_FUNCTION_FAILED;
3070}
3071
2d70c103
NB		 3072/*
3073 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3074 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3075 */
3076int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3077 uint8_t scsi_status)
3078{
3079 struct scsi_qla_host *vha = cmd->vha;
82de802a 3080 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3081 struct ctio7_to_24xx *pkt;
3082 struct qla_tgt_prm prm;
3083 uint32_t full_req_cnt = 0;
3084 unsigned long flags = 0;
3085 int res;
3086
726b8548 3087 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3088 cmd->state = QLA_TGT_STATE_PROCESSED;
3089 if (cmd->sess->logout_completed)
3090 /* no need to terminate. FW already freed exchange. */
3091 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3092 else
82de802a 3093 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
a6ca8878
AP		 3094 return 0;
3095 }
a6ca8878 3096
22d84726 3097 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3098 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3099 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3100 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3101 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3102
3103 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3104 &full_req_cnt);
3105 if (unlikely(res != 0)) {
2d70c103
NB		 3106 return res;
3107 }
3108
82de802a 3109 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3110
ce1025cd 3111 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3112 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3113 else
60a9eadb 3114 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3115
7c3f8fd1 3116 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3117 /*
3bb67df5 3118 * Either the port is not online or this request was from
b6a029e1
AE		 3119 * previous life, just abort the processing.
3120 */
3121 cmd->state = QLA_TGT_STATE_PROCESSED;
3122 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3123 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3124 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3125 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3126 cmd->reset_count, qpair->chip_reset);
82de802a 3127 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3128 return 0;
3129 }
3130
2d70c103 3131 /* Does F/W have an IOCBs for this request */
82de802a 3132 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3133 if (unlikely(res))
3134 goto out_unmap_unlock;
3135
f83adb61 3136 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3137 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3138 else
82de802a 3139 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3140 if (unlikely(res != 0)) {
82de802a 3141 qpair->req->cnt += full_req_cnt;
2d70c103 3142 goto out_unmap_unlock;
810e30bc 3143 }
2d70c103
NB		 3144
3145 pkt = (struct ctio7_to_24xx *)prm.pkt;
3146
3147 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3148 pkt->u.status0.flags |=
ad950360 3149 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3150 CTIO7_FLAGS_STATUS_MODE_0);
3151
f83adb61 3152 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3153 qlt_load_data_segments(&prm);
2d70c103
NB		 3154
3155 if (prm.add_status_pkt == 0) {
3156 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3157 pkt->u.status0.scsi_status =
3158 cpu_to_le16(prm.rq_result);
3159 pkt->u.status0.residual =
3160 cpu_to_le32(prm.residual);
ad950360 3161 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3162 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3163 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3164 pkt->u.status0.flags |=
ad950360 3165 cpu_to_le16(
2d70c103
NB		 3166 CTIO7_FLAGS_EXPLICIT_CONFORM |
3167 CTIO7_FLAGS_CONFORM_REQ);
3168 }
3169 }
3170
3171 } else {
3172 /*
3173 * We have already made sure that there is sufficient
3174 * amount of request entries to not drop HW lock in
3175 * req_pkt().
3176 */
3177 struct ctio7_to_24xx *ctio =
82de802a
QT		 3178 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3179 qpair->req);
2d70c103 3180
22d84726 3181 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3182 "Building additional status packet 0x%p.\n",
3183 ctio);
2d70c103 3184
f83adb61
QT		 3185 /*
3186 * T10Dif: ctio_crc2_to_fw overlay ontop of
3187 * ctio7_to_24xx
3188 */
2d70c103 3189 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3190 /* reset back to CTIO7 */
2d70c103 3191 ctio->entry_count = 1;
f83adb61 3192 ctio->entry_type = CTIO_TYPE7;
2d70c103 3193 ctio->dseg_count = 0;
ad950360 3194 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3195 CTIO7_FLAGS_DATA_IN);
3196
3197 /* Real finish is ctio_m1's finish */
3198 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3199 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3200 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3201
3202 /* qlt_24xx_init_ctio_to_isp will correct
3203 * all neccessary fields that's part of CTIO7.
3204 * There should be no residual of CTIO-CRC2 data.
3205 */
2d70c103
NB		 3206 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3207 &prm);
2d70c103
NB		 3208 }
3209 } else
3210 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3211
3212
3213 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3214 cmd->cmd_sent_to_fw = 1;
2d70c103 3215
63163e06
HM		 3216 /* Memory Barrier */
3217 wmb();
8abfa9e2
QT		 3218 if (qpair->reqq_start_iocbs)
3219 qpair->reqq_start_iocbs(qpair);
3220 else
3221 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3222 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3223
3224 return 0;
3225
3226out_unmap_unlock:
f9b6721a 3227 qlt_unmap_sg(vha, cmd);
82de802a 3228 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3229
3230 return res;
3231}
3232EXPORT_SYMBOL(qlt_xmit_response);
3233
3234int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3235{
3236 struct ctio7_to_24xx *pkt;
3237 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3238 struct qla_tgt *tgt = cmd->tgt;
3239 struct qla_tgt_prm prm;
82de802a 3240 unsigned long flags = 0;
2d70c103 3241 int res = 0;
82de802a 3242 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3243
3244 memset(&prm, 0, sizeof(prm));
3245 prm.cmd = cmd;
3246 prm.tgt = tgt;
3247 prm.sg = NULL;
3248 prm.req_cnt = 1;
3249
2d70c103
NB		 3250 /* Calculate number of entries and segments required */
3251 if (qlt_pci_map_calc_cnt(&prm) != 0)
3252 return -EAGAIN;
3253
7c3f8fd1 3254 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3255 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3256 /*
3bb67df5 3257 * Either the port is not online or this request was from
b6a029e1
AE		 3258 * previous life, just abort the processing.
3259 */
3260 cmd->state = QLA_TGT_STATE_NEED_DATA;
3261 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3262 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3263 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3264 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3265 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3266 return 0;
3267 }
3268
82de802a 3269 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3270 /* Does F/W have an IOCBs for this request */
82de802a 3271 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3272 if (res != 0)
3273 goto out_unlock_free_unmap;
f83adb61 3274 if (cmd->se_cmd.prot_op)
82de802a 3275 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3276 else
82de802a 3277 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3278
810e30bc 3279 if (unlikely(res != 0)) {
82de802a 3280 qpair->req->cnt += prm.req_cnt;
2d70c103 3281 goto out_unlock_free_unmap;
810e30bc
QT		 3282 }
3283
2d70c103 3284 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3285 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3286 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3287
3288 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3289 qlt_load_data_segments(&prm);
2d70c103
NB		 3290
3291 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3292 cmd->cmd_sent_to_fw = 1;
2d70c103 3293
63163e06
HM		 3294 /* Memory Barrier */
3295 wmb();
8abfa9e2
QT		 3296 if (qpair->reqq_start_iocbs)
3297 qpair->reqq_start_iocbs(qpair);
3298 else
3299 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3300 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3301
3302 return res;
3303
3304out_unlock_free_unmap:
f9b6721a 3305 qlt_unmap_sg(vha, cmd);
82de802a 3306 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3307
3308 return res;
3309}
3310EXPORT_SYMBOL(qlt_rdy_to_xfer);
3311
f83adb61
QT		 3312
3313/*
be25152c 3314 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3315 */
be25152c 3316static void
8abfa9e2 3317qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3318 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3319{
3320 uint8_t *ap = &sts->actual_dif[0];
3321 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3322 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3323 uint8_t scsi_status, sense_key, asc, ascq;
3324 unsigned long flags;
8abfa9e2 3325 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3326
be25152c 3327 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3328
be25152c
QT		 3329 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3330 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3331 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3332
be25152c
QT		 3333 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3334 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3335 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3336
be25152c
QT		 3337 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3338 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3339
be25152c 3340 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3341
be25152c
QT		 3342 /* check appl tag */
3343 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3344 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3345 "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]",
3346 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3347 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3348 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3349 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3350
3351 cmd->dif_err_code = DIF_ERR_APP;
3352 scsi_status = SAM_STAT_CHECK_CONDITION;
3353 sense_key = ABORTED_COMMAND;
3354 asc = 0x10;
3355 ascq = 0x2;
f83adb61
QT		 3356 }
3357
3358 /* check ref tag */
be25152c 3359 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3360 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3361 "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] ",
3362 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3363 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3364 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3365 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3366
3367 cmd->dif_err_code = DIF_ERR_REF;
3368 scsi_status = SAM_STAT_CHECK_CONDITION;
3369 sense_key = ABORTED_COMMAND;
3370 asc = 0x10;
3371 ascq = 0x3;
f83adb61
QT		 3372 goto out;
3373 }
3374
be25152c
QT		 3375 /* check guard */
3376 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3377 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3378 "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]",
3379 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3380 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3381 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3382 cmd->atio.u.isp24.fcp_hdr.ox_id);
3383
be25152c
QT		 3384 cmd->dif_err_code = DIF_ERR_GRD;
3385 scsi_status = SAM_STAT_CHECK_CONDITION;
3386 sense_key = ABORTED_COMMAND;
3387 asc = 0x10;
3388 ascq = 0x1;
f83adb61
QT		 3389 }
3390out:
be25152c
QT		 3391 switch (cmd->state) {
3392 case QLA_TGT_STATE_NEED_DATA:
3393 /* handle_data will load DIF error code */
3394 cmd->state = QLA_TGT_STATE_DATA_IN;
3395 vha->hw->tgt.tgt_ops->handle_data(cmd);
3396 break;
3397 default:
3398 spin_lock_irqsave(&cmd->cmd_lock, flags);
3399 if (cmd->aborted) {
3400 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3401 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3402 break;
3403 }
3404 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3405
8abfa9e2
QT		 3406 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3407 ascq);
be25152c
QT		 3408 /* assume scsi status gets out on the wire.
3409 * Will not wait for completion.
3410 */
3411 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3412 break;
3413 }
3414}
f83adb61 3415
a6ca8878
AP		 3416/* If hardware_lock held on entry, might drop it, then reaquire */
3417/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3418static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3419 struct imm_ntfy_from_isp *ntfy)
3420{
3421 struct nack_to_isp *nack;
3422 struct qla_hw_data *ha = vha->hw;
3423 request_t *pkt;
3424 int ret = 0;
3425
3426 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3427 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3428
ec7193e2 3429 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3430 if (pkt == NULL) {
3431 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3432 "qla_target(%d): %s failed: unable to allocate "
3433 "request packet\n", vha->vp_idx, __func__);
3434 return -ENOMEM;
3435 }
3436
3437 pkt->entry_type = NOTIFY_ACK_TYPE;
3438 pkt->entry_count = 1;
4f060736 3439 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3440
3441 nack = (struct nack_to_isp *)pkt;
3442 nack->ox_id = ntfy->ox_id;
3443
3444 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3445 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3446 nack->u.isp24.flags = ntfy->u.isp24.flags &
3447 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3448 }
3449
3450 /* terminate */
3451 nack->u.isp24.flags |=
3452 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3453
3454 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3455 nack->u.isp24.status = ntfy->u.isp24.status;
3456 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3457 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3458 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3459 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3460 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3461 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3462
3463 qla2x00_start_iocbs(vha, vha->req);
3464 return ret;
3465}
3466
3467static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3468 struct imm_ntfy_from_isp *imm, int ha_locked)
3469{
3470 unsigned long flags = 0;
3471 int rc;
3472
a6ca8878
AP		 3473 if (ha_locked) {
3474 rc = __qlt_send_term_imm_notif(vha, imm);
3475
3476#if 0 /* Todo */
3477 if (rc == -ENOMEM)
3478 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3479#else
3480 if (rc) {
3481 }
a6ca8878
AP		 3482#endif
3483 goto done;
3484 }
3485
3486 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3487 rc = __qlt_send_term_imm_notif(vha, imm);
3488
3489#if 0 /* Todo */
3490 if (rc == -ENOMEM)
3491 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3492#endif
3493
3494done:
3495 if (!ha_locked)
3496 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3497}
3498
83548fe2
QT		 3499/*
3500 * If hardware_lock held on entry, might drop it, then reaquire
3501 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3502 */
82de802a 3503static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3504 struct qla_tgt_cmd *cmd,
3505 struct atio_from_isp *atio)
3506{
82de802a 3507 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3508 struct ctio7_to_24xx *ctio24;
3509 struct qla_hw_data *ha = vha->hw;
3510 request_t *pkt;
3511 int ret = 0;
33a5fcee 3512 uint16_t temp;
2d70c103 3513
83548fe2 3514 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3515
72fcd4eb
QT		 3516 if (cmd)
3517 vha = cmd->vha;
3518
82de802a 3519 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3520 if (pkt == NULL) {
3521 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3522 "qla_target(%d): %s failed: unable to allocate "
3523 "request packet\n", vha->vp_idx, __func__);
3524 return -ENOMEM;
3525 }
3526
3527 if (cmd != NULL) {
3528 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3529 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3530 "qla_target(%d): Terminating cmd %p with "
3531 "incorrect state %d\n", vha->vp_idx, cmd,
3532 cmd->state);
3533 } else
3534 ret = 1;
3535 }
3536
60a9eadb 3537 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3538 pkt->entry_count = 1;
3539 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3540
3541 ctio24 = (struct ctio7_to_24xx *)pkt;
3542 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3543 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3544 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3545 ctio24->vp_index = vha->vp_idx;
3546 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3547 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3548 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3549 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3550 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3551 CTIO7_FLAGS_TERMINATE;
3552 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3553 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3554 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3555
3556 /* Most likely, it isn't needed */
3557 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3558 &atio->u.isp24.fcp_cmnd.add_cdb[
3559 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3560 if (ctio24->u.status1.residual != 0)
3561 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3562
63163e06
HM		 3563 /* Memory Barrier */
3564 wmb();
8abfa9e2
QT		 3565 if (qpair->reqq_start_iocbs)
3566 qpair->reqq_start_iocbs(qpair);
3567 else
3568 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3569 return ret;
3570}
3571
82de802a 3572static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3573 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3574 int ul_abort)
2d70c103 3575{
82de802a 3576 struct scsi_qla_host *vha;
6bc85dd5 3577 unsigned long flags = 0;
2d70c103
NB		 3578 int rc;
3579
82de802a
QT		 3580 /* why use different vha? NPIV */
3581 if (cmd)
3582 vha = cmd->vha;
3583 else
3584 vha = qpair->vha;
2d70c103
NB		 3585
3586 if (ha_locked) {
82de802a 3587 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3588 if (rc == -ENOMEM)
3589 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3590 goto done;
3591 }
82de802a
QT		 3592 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3593 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3594 if (rc == -ENOMEM)
3595 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3596
2d70c103 3597done:
a07100e0 3598 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3599 if (cmd->sg_mapped)
3600 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3601 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3602 }
6bc85dd5
HM		 3603
3604 if (!ha_locked)
82de802a 3605 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3606
7b898542 3607 return;
2d70c103
NB		 3608}
3609
33e79977
QT		 3610static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3611{
3612 struct list_head free_list;
3613 struct qla_tgt_cmd *cmd, *tcmd;
3614
3615 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3616 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3617
3618 cmd = tcmd = NULL;
3619 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3620 INIT_LIST_HEAD(&free_list);
3621 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3622
3623 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3624 list_del(&cmd->cmd_list);
3625 /* This cmd was never sent to TCM. There is no need
3626 * to schedule free or call free_cmd
3627 */
3628 qlt_free_cmd(cmd);
3629 vha->hw->tgt.num_qfull_cmds_alloc--;
3630 }
3631 }
3632 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3633}
3634
3635static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3636{
3637 uint32_t total_leaked;
3638
3639 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3640
3641 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3642 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3643
3644 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3645 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3646 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3647
3648 if (IS_P3P_TYPE(vha->hw))
3649 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3650 else
3651 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3652 qla2xxx_wake_dpc(vha);
3653 }
3654
3655}
3656
a07100e0 3657int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3658{
3659 struct qla_tgt *tgt = cmd->tgt;
3660 struct scsi_qla_host *vha = tgt->vha;
3661 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3662 unsigned long flags;
7359df25
AP		 3663
3664 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3665 "qla_target(%d): terminating exchange for aborted cmd=%p "
3666 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3667 se_cmd->tag);
3668
a07100e0
QT		 3669 spin_lock_irqsave(&cmd->cmd_lock, flags);
3670 if (cmd->aborted) {
3671 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3672 /*
3673 * It's normal to see 2 calls in this path:
3674 * 1) XFER Rdy completion + CMD_T_ABORT
3675 * 2) TCM TMR - drain_state_list
3676 */
83548fe2
QT		 3677 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3678 "multiple abort. %p transport_state %x, t_state %x, "
3679 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3680 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3681 return EIO;
3682 }
193b50b9 3683 cmd->aborted = 1;
1eb42f96 3684 cmd->trc_flags |= TRC_ABORT;
a07100e0 3685 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3686
82de802a 3687 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3688 return 0;
7359df25
AP		 3689}
3690EXPORT_SYMBOL(qlt_abort_cmd);
3691
2d70c103
NB		 3692void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3693{
5d964837 3694 struct fc_port *sess = cmd->sess;
51a07f84 3695
f83adb61
QT		 3696 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3697 "%s: se_cmd[%p] ox_id %04x\n",
3698 __func__, &cmd->se_cmd,
3699 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3700
e07f8f65
SK		 3701 BUG_ON(cmd->cmd_in_wq);
3702
a07100e0
QT		 3703 if (cmd->sg_mapped)
3704 qlt_unmap_sg(cmd->vha, cmd);
3705
33e79977
QT		 3706 if (!cmd->q_full)
3707 qlt_decr_num_pend_cmds(cmd->vha);
3708
f83adb61 3709 BUG_ON(cmd->sg_mapped);
e07f8f65 3710 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3711 if (unlikely(cmd->free_sg))
3712 kfree(cmd->sg);
51a07f84
NB		 3713
3714 if (!sess || !sess->se_sess) {
3715 WARN_ON(1);
3716 return;
3717 }
e07f8f65 3718 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3719 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3720}
3721EXPORT_SYMBOL(qlt_free_cmd);
3722
2d70c103
NB		 3723/*
3724 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3725 */
82de802a 3726static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3727 struct qla_tgt_cmd *cmd, uint32_t status)
3728{
3729 int term = 0;
82de802a 3730 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3731
be25152c 3732 if (cmd->se_cmd.prot_op)
83548fe2 3733 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3734 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3735 "se_cmd=%p tag[%x] op %#x/%s",
3736 cmd->lba, cmd->lba,
3737 cmd->num_blks, &cmd->se_cmd,
3738 cmd->atio.u.isp24.exchange_addr,
3739 cmd->se_cmd.prot_op,
3740 prot_op_str(cmd->se_cmd.prot_op));
3741
2d70c103
NB		 3742 if (ctio != NULL) {
3743 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3744 term = !(c->flags &
ad950360 3745 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3746 } else
3747 term = 1;
3748
3749 if (term)
b0b912d3 3750 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3751
3752 return term;
3753}
3754
2d70c103
NB		 3755
3756/* ha->hardware_lock supposed to be held on entry */
3757static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3758 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103
NB		 3759{
3760 struct qla_tgt_cmd *cmd = NULL;
82de802a
QT		 3761 struct req_que *req;
3762 int qid = GET_QID(handle);
3763 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3764
82de802a
QT		 3765 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3766 return NULL;
2d70c103 3767
82de802a
QT		 3768 if (qid == rsp->req->id) {
3769 req = rsp->req;
3770 } else if (vha->hw->req_q_map[qid]) {
3771 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3772 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3773 vha->vp_idx, rsp->id, handle);
3774 req = vha->hw->req_q_map[qid];
3775 } else {
3776 return NULL;
3777 }
667024a3 3778
82de802a 3779 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3780
82de802a 3781 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3782 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3783 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3784 "qla_target(%d): Wrong handle %x received\n",
3785 vha->vp_idx, handle);
3786 return NULL;
3787 }
82de802a
QT		 3788
3789 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3790 if (unlikely(cmd == NULL)) {
c5419e26 3791 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3792 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3793 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3794 return NULL;
3795 }
82de802a 3796 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3797 } else if (ctio != NULL) {
3798 /* We can't get loop ID from CTIO7 */
3799 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3800 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3801 "support NULL handles\n", vha->vp_idx);
3802 return NULL;
3803 }
3804
3805 return cmd;
3806}
3807
c0cb4496 3808/* hardware_lock should be held by caller. */
c5419e26 3809void
c0cb4496
AE		 3810qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3811{
3812 struct qla_hw_data *ha = vha->hw;
c0cb4496
AE		 3813
3814 if (cmd->sg_mapped)
3815 qlt_unmap_sg(vha, cmd);
3816
c0cb4496
AE		 3817 /* TODO: fix debug message type and ids. */
3818 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3819 ql_dbg(ql_dbg_io, vha, 0xff00,
82de802a 3820 "HOST-ABORT: state=PROCESSED.\n");
c0cb4496
AE		 3821 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3822 cmd->write_data_transferred = 0;
3823 cmd->state = QLA_TGT_STATE_DATA_IN;
3824
3825 ql_dbg(ql_dbg_io, vha, 0xff01,
82de802a 3826 "HOST-ABORT: state=DATA_IN.\n");
c0cb4496
AE		 3827
3828 ha->tgt.tgt_ops->handle_data(cmd);
3829 return;
c0cb4496
AE		 3830 } else {
3831 ql_dbg(ql_dbg_io, vha, 0xff03,
82de802a 3832 "HOST-ABORT: state=BAD(%d).\n",
c0cb4496
AE		 3833 cmd->state);
3834 dump_stack();
3835 }
3836
1eb42f96 3837 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3838 ha->tgt.tgt_ops->free_cmd(cmd);
3839}
3840
2d70c103
NB		 3841/*
3842 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3843 */
82de802a
QT		 3844static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3845 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3846{
3847 struct qla_hw_data *ha = vha->hw;
3848 struct se_cmd *se_cmd;
2d70c103 3849 struct qla_tgt_cmd *cmd;
82de802a 3850 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3851
2d70c103
NB		 3852 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3853 /* That could happen only in case of an error/reset/abort */
3854 if (status != CTIO_SUCCESS) {
3855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3856 "Intermediate CTIO received"
3857 " (status %x)\n", status);
3858 }
3859 return;
3860 }
3861
82de802a 3862 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3863 if (cmd == NULL)
2d70c103 3864 return;
092e1dc3 3865
2d70c103 3866 se_cmd = &cmd->se_cmd;
d564a372 3867 cmd->cmd_sent_to_fw = 0;
2d70c103 3868
f9b6721a 3869 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3870
3871 if (unlikely(status != CTIO_SUCCESS)) {
3872 switch (status & 0xFFFF) {
3873 case CTIO_LIP_RESET:
3874 case CTIO_TARGET_RESET:
3875 case CTIO_ABORTED:
7b898542 3876 /* driver request abort via Terminate exchange */
2d70c103
NB		 3877 case CTIO_TIMEOUT:
3878 case CTIO_INVALID_RX_ID:
3879 /* They are OK */
3880 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3881 "qla_target(%d): CTIO with "
3882 "status %#x received, state %x, se_cmd %p, "
3883 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3884 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3885 status, cmd->state, se_cmd);
3886 break;
3887
3888 case CTIO_PORT_LOGGED_OUT:
3889 case CTIO_PORT_UNAVAILABLE:
71cdc079 3890 {
dacb5822
HM		 3891 int logged_out =
3892 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3893
2d70c103 3894 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3895 "qla_target(%d): CTIO with %s status %x "
2d70c103 3896 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3897 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3898 status, cmd->state, se_cmd);
2d70c103 3899
71cdc079
AP		 3900 if (logged_out && cmd->sess) {
3901 /*
3902 * Session is already logged out, but we need
3903 * to notify initiator, who's not aware of this
3904 */
3905 cmd->sess->logout_on_delete = 0;
3906 cmd->sess->send_els_logo = 1;
83548fe2 3907 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3908 "%s %d %8phC post del sess\n",
3909 __func__, __LINE__, cmd->sess->port_name);
3910
147c591f 3911 qlt_schedule_sess_for_deletion(cmd->sess);
71cdc079
AP		 3912 }
3913 break;
3914 }
f83adb61
QT		 3915 case CTIO_DIF_ERROR: {
3916 struct ctio_crc_from_fw *crc =
3917 (struct ctio_crc_from_fw *)ctio;
3918 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3919 "qla_target(%d): CTIO with DIF_ERROR status %x "
3920 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3921 "expect_dif[0x%llx]\n",
f83adb61
QT		 3922 vha->vp_idx, status, cmd->state, se_cmd,
3923 *((u64 *)&crc->actual_dif[0]),
3924 *((u64 *)&crc->expected_dif[0]));
3925
8abfa9e2 3926 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 3927 return;
f83adb61 3928 }
2d70c103
NB		 3929 default:
3930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3931 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3932 vha->vp_idx, status, cmd->state, se_cmd);
3933 break;
3934 }
3935
7b898542 3936
193b50b9 3937 /* "cmd->aborted" means
7b898542
QT		 3938 * cmd is already aborted/terminated, we don't
3939 * need to terminate again. The exchange is already
3940 * cleaned up/freed at FW level. Just cleanup at driver
3941 * level.
3942 */
3943 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3944 (!cmd->aborted)) {
1eb42f96 3945 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 3946 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 3947 return;
7b898542 3948 }
2d70c103
NB		 3949 }
3950
3951 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3952 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3953 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3954 cmd->state = QLA_TGT_STATE_DATA_IN;
3955
52c82823 3956 if (status == CTIO_SUCCESS)
2d70c103
NB		 3957 cmd->write_data_transferred = 1;
3958
2d70c103
NB		 3959 ha->tgt.tgt_ops->handle_data(cmd);
3960 return;
193b50b9 3961 } else if (cmd->aborted) {
1eb42f96 3962 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3964 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3965 } else {
1eb42f96 3966 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3967 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3968 "qla_target(%d): A command in state (%d) should "
3969 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3970 }
3971
7b898542 3972 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3973 !cmd->aborted) {
2d70c103
NB		 3974 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3975 dump_stack();
3976 }
3977
3978 ha->tgt.tgt_ops->free_cmd(cmd);
3979}
3980
2d70c103
NB		 3981static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3982 uint8_t task_codes)
3983{
3984 int fcp_task_attr;
3985
3986 switch (task_codes) {
3987 case ATIO_SIMPLE_QUEUE:
68d81f40 3988 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3989 break;
3990 case ATIO_HEAD_OF_QUEUE:
68d81f40 3991 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 3992 break;
3993 case ATIO_ORDERED_QUEUE:
68d81f40 3994 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 3995 break;
3996 case ATIO_ACA_QUEUE:
68d81f40 3997 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 3998 break;
3999 case ATIO_UNTAGGED:
68d81f40 4000 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 4001 break;
4002 default:
4003 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4004 "qla_target: unknown task code %x, use ORDERED instead\n",
4005 task_codes);
68d81f40 4006 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4007 break;
4008 }
4009
4010 return fcp_task_attr;
4011}
4012
5d964837 4013static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 4014 uint8_t *);
4015/*
4016 * Process context for I/O path into tcm_qla2xxx code
4017 */
51a07f84 4018static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 4019{
2d70c103
NB		 4020 scsi_qla_host_t *vha = cmd->vha;
4021 struct qla_hw_data *ha = vha->hw;
5d964837 4022 struct fc_port *sess = cmd->sess;
2d70c103
NB		 4023 struct atio_from_isp *atio = &cmd->atio;
4024 unsigned char *cdb;
4025 unsigned long flags;
4026 uint32_t data_length;
4027 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4028 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4029
e07f8f65 4030 cmd->cmd_in_wq = 0;
1eb42f96 4031 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4032
193b50b9 4033 if (cmd->aborted) {
8b2f5ff3
SN		 4034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4035 "cmd with tag %u is aborted\n",
4036 cmd->atio.u.isp24.exchange_addr);
4037 goto out_term;
4038 }
4039
a07100e0 4040 spin_lock_init(&cmd->cmd_lock);
2d70c103 4041 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4042 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4043
4044 if (atio->u.isp24.fcp_cmnd.rddata &&
4045 atio->u.isp24.fcp_cmnd.wrdata) {
4046 bidi = 1;
4047 data_dir = DMA_TO_DEVICE;
4048 } else if (atio->u.isp24.fcp_cmnd.rddata)
4049 data_dir = DMA_FROM_DEVICE;
4050 else if (atio->u.isp24.fcp_cmnd.wrdata)
4051 data_dir = DMA_TO_DEVICE;
4052 else
4053 data_dir = DMA_NONE;
4054
4055 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4056 atio->u.isp24.fcp_cmnd.task_attr);
4057 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4058 &atio->u.isp24.fcp_cmnd.add_cdb[
4059 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4060
51a07f84
NB		 4061 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4062 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4063 if (ret != 0)
4064 goto out_term;
4065 /*
4066 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4067 */
5d964837 4068 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 4069 return;
4070
4071out_term:
667024a3 4072 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4073 /*
fae9eaf8
RD		 4074 * cmd has not sent to target yet, so pass NULL as the second
4075 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4076 */
1eb42f96 4077 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4078 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4079 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4080
4081 qlt_decr_num_pend_cmds(vha);
51a07f84 4082 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
82de802a 4083 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b 4084
5d964837 4085 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 4086}
4087
4088static void qlt_do_work(struct work_struct *work)
4089{
4090 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4091 scsi_qla_host_t *vha = cmd->vha;
4092 unsigned long flags;
4093
4094 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4095 list_del(&cmd->cmd_list);
4096 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4097
4098 __qlt_do_work(cmd);
4099}
4100
09620eeb
QT		 4101void qlt_clr_qp_table(struct scsi_qla_host *vha)
4102{
4103 unsigned long flags;
4104 struct qla_hw_data *ha = vha->hw;
4105 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4106 void *node;
4107 u64 key = 0;
4108
4109 ql_log(ql_log_info, vha, 0x706c,
4110 "User update Number of Active Qpairs %d\n",
4111 ha->tgt.num_act_qpairs);
4112
4113 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4114
4115 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4116 btree_remove64(&tgt->lun_qpair_map, key);
4117
4118 ha->base_qpair->lun_cnt = 0;
4119 for (key = 0; key < ha->max_qpairs; key++)
4120 if (ha->queue_pair_map[key])
4121 ha->queue_pair_map[key]->lun_cnt = 0;
4122
4123 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4124}
4125
e326d22a
QT		 4126static void qlt_assign_qpair(struct scsi_qla_host *vha,
4127 struct qla_tgt_cmd *cmd)
4128{
4129 struct qla_qpair *qpair, *qp;
4130 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4131 struct qla_qpair_hint *h;
4132
4133 if (vha->flags.qpairs_available) {
4134 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4135 if (unlikely(!h)) {
4136 /* spread lun to qpair ratio evently */
4137 int lcnt = 0, rc;
4138 struct scsi_qla_host *base_vha =
4139 pci_get_drvdata(vha->hw->pdev);
4140
4141 qpair = vha->hw->base_qpair;
4142 if (qpair->lun_cnt == 0) {
4143 qpair->lun_cnt++;
4144 h = qla_qpair_to_hint(tgt, qpair);
4145 BUG_ON(!h);
4146 rc = btree_insert64(&tgt->lun_qpair_map,
4147 cmd->unpacked_lun, h, GFP_ATOMIC);
4148 if (rc) {
4149 qpair->lun_cnt--;
4150 ql_log(ql_log_info, vha, 0xd037,
4151 "Unable to insert lun %llx into lun_qpair_map\n",
4152 cmd->unpacked_lun);
4153 }
4154 goto out;
4155 } else {
4156 lcnt = qpair->lun_cnt;
4157 }
4158
4159 h = NULL;
4160 list_for_each_entry(qp, &base_vha->qp_list,
4161 qp_list_elem) {
4162 if (qp->lun_cnt == 0) {
4163 qp->lun_cnt++;
4164 h = qla_qpair_to_hint(tgt, qp);
4165 BUG_ON(!h);
4166 rc = btree_insert64(&tgt->lun_qpair_map,
4167 cmd->unpacked_lun, h, GFP_ATOMIC);
4168 if (rc) {
4169 qp->lun_cnt--;
4170 ql_log(ql_log_info, vha, 0xd038,
4171 "Unable to insert lun %llx into lun_qpair_map\n",
4172 cmd->unpacked_lun);
4173 }
4174 qpair = qp;
4175 goto out;
4176 } else {
4177 if (qp->lun_cnt < lcnt) {
4178 lcnt = qp->lun_cnt;
4179 qpair = qp;
4180 continue;
4181 }
4182 }
4183 }
4184 BUG_ON(!qpair);
4185 qpair->lun_cnt++;
4186 h = qla_qpair_to_hint(tgt, qpair);
4187 BUG_ON(!h);
4188 rc = btree_insert64(&tgt->lun_qpair_map,
4189 cmd->unpacked_lun, h, GFP_ATOMIC);
4190 if (rc) {
4191 qpair->lun_cnt--;
4192 ql_log(ql_log_info, vha, 0xd039,
4193 "Unable to insert lun %llx into lun_qpair_map\n",
4194 cmd->unpacked_lun);
4195 }
4196 }
4197 } else {
4198 h = &tgt->qphints[0];
4199 }
4200out:
4201 cmd->qpair = h->qpair;
4202 cmd->se_cmd.cpuid = h->cpuid;
4203}
4204
51a07f84 4205static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4206 struct fc_port *sess,
51a07f84
NB		 4207 struct atio_from_isp *atio)
4208{
4209 struct se_session *se_sess = sess->se_sess;
4210 struct qla_tgt_cmd *cmd;
4211 int tag;
4212
4213 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4214 if (tag < 0)
4215 return NULL;
4216
4217 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4218 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4219 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4220 memcpy(&cmd->atio, atio, sizeof(*atio));
4221 cmd->state = QLA_TGT_STATE_NEW;
4222 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4223 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4224 cmd->vha = vha;
4225 cmd->se_cmd.map_tag = tag;
4226 cmd->sess = sess;
4227 cmd->loop_id = sess->loop_id;
4228 cmd->conf_compl_supported = sess->conf_compl_supported;
4229
1eb42f96 4230 cmd->trc_flags = 0;
9fce1254
KS		 4231 cmd->jiffies_at_alloc = get_jiffies_64();
4232
e326d22a
QT		 4233 cmd->unpacked_lun = scsilun_to_int(
4234 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4235 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4236 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4237 cmd->vp_idx = vha->vp_idx;
9fce1254 4238
51a07f84
NB		 4239 return cmd;
4240}
4241
51a07f84
NB		 4242static void qlt_create_sess_from_atio(struct work_struct *work)
4243{
4244 struct qla_tgt_sess_op *op = container_of(work,
4245 struct qla_tgt_sess_op, work);
4246 scsi_qla_host_t *vha = op->vha;
4247 struct qla_hw_data *ha = vha->hw;
5d964837 4248 struct fc_port *sess;
51a07f84
NB		 4249 struct qla_tgt_cmd *cmd;
4250 unsigned long flags;
4251 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
4252
8b2f5ff3
SN		 4253 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4254 list_del(&op->cmd_list);
4255 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
4256
4257 if (op->aborted) {
4258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
4259 "sess_op with tag %u is aborted\n",
4260 op->atio.u.isp24.exchange_addr);
4261 goto out_term;
4262 }
4263
51a07f84 4264 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
8b2f5ff3
SN		 4265 "qla_target(%d): Unable to find wwn login"
4266 " (s_id %x:%x:%x), trying to create it manually\n",
4267 vha->vp_idx, s_id[0], s_id[1], s_id[2]);
51a07f84
NB		 4268
4269 if (op->atio.u.raw.entry_count > 1) {
4270 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
8b2f5ff3 4271 "Dropping multy entry atio %p\n", &op->atio);
51a07f84
NB		 4272 goto out_term;
4273 }
4274
51a07f84
NB		 4275 sess = qlt_make_local_sess(vha, s_id);
4276 /* sess has an extra creation ref. */
51a07f84
NB		 4277
4278 if (!sess)
4279 goto out_term;
4280 /*
4281 * Now obtain a pre-allocated session tag using the original op->atio
4282 * packet header, and dispatch into __qlt_do_work() using the existing
4283 * process context.
4284 */
4285 cmd = qlt_get_tag(vha, sess, &op->atio);
4286 if (!cmd) {
82de802a
QT		 4287 struct qla_qpair *qpair = ha->base_qpair;
4288
4289 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4290 qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY);
4291 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
4292
4293 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4294 ha->tgt.tgt_ops->put_sess(sess);
82de802a 4295 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4296 kfree(op);
4297 return;
4298 }
726b8548 4299
51a07f84 4300 /*
e3dc0e31 4301 * __qlt_do_work() will call qlt_put_sess() to release
51a07f84
NB		 4302 * the extra reference taken above by qlt_make_local_sess()
4303 */
4304 __qlt_do_work(cmd);
4305 kfree(op);
4306 return;
51a07f84 4307out_term:
82de802a 4308 qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0);
51a07f84 4309 kfree(op);
2d70c103
NB		 4310}
4311
4312/* ha->hardware_lock supposed to be held on entry */
4313static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4314 struct atio_from_isp *atio)
4315{
51a07f84 4316 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4317 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4318 struct fc_port *sess;
2d70c103 4319 struct qla_tgt_cmd *cmd;
5d964837 4320 unsigned long flags;
2d70c103
NB		 4321
4322 if (unlikely(tgt->tgt_stop)) {
667024a3 4323 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103
NB		 4324 "New command while device %p is shutting down\n", tgt);
4325 return -EFAULT;
4326 }
4327
51a07f84
NB		 4328 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
4329 if (unlikely(!sess)) {
4330 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op),
4331 GFP_ATOMIC);
4332 if (!op)
4333 return -ENOMEM;
4334
4335 memcpy(&op->atio, atio, sizeof(*atio));
78c2106a 4336 op->vha = vha;
8b2f5ff3 4337
8b631d87 4338 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4339 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
8b631d87 4340 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4341
51a07f84
NB		 4342 INIT_WORK(&op->work, qlt_create_sess_from_atio);
4343 queue_work(qla_tgt_wq, &op->work);
4344 return 0;
4345 }
e52a8b45
AP		 4346
4347 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4348 * session deletion, but it's still in sess_del_work wq */
726b8548 4349 if (sess->deleted) {
83548fe2 4350 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4351 "New command while old session %p is being deleted\n",
4352 sess);
4353 return -EFAULT;
4354 }
4355
51a07f84
NB		 4356 /*
4357 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4358 */
726b8548 4359 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4361 "%s: kref_get fail, %8phC oxid %x \n",
4362 __func__, sess->port_name,
4363 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4364 return -EFAULT;
4365 }
51a07f84
NB		 4366
4367 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4368 if (!cmd) {
667024a3 4369 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4370 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837 4371 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 4372 return -ENOMEM;
4373 }
4374
e07f8f65 4375 cmd->cmd_in_wq = 1;
1eb42f96 4376 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4377
726b8548 4378 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4379 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4380 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4381
2d70c103 4382 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4383 if (vha->flags.qpairs_available) {
4384 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4385 } else if (ha->msix_count) {
fb3269ba
QT		 4386 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4387 queue_work_on(smp_processor_id(), qla_tgt_wq,
4388 &cmd->work);
4389 else
4390 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4391 &cmd->work);
4392 } else {
4393 queue_work(qla_tgt_wq, &cmd->work);
4394 }
2d70c103 4395
82de802a 4396 return 0;
2d70c103
NB		 4397}
4398
4399/* ha->hardware_lock supposed to be held on entry */
5d964837 4400static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4401 int fn, void *iocb, int flags)
4402{
4403 struct scsi_qla_host *vha = sess->vha;
4404 struct qla_hw_data *ha = vha->hw;
4405 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4406 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4407 int res;
2d70c103
NB		 4408
4409 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4410 if (!mcmd) {
4411 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4412 "qla_target(%d): Allocation of management "
4413 "command failed, some commands and their data could "
4414 "leak\n", vha->vp_idx);
4415 return -ENOMEM;
4416 }
4417 memset(mcmd, 0, sizeof(*mcmd));
4418 mcmd->sess = sess;
4419
4420 if (iocb) {
4421 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4422 sizeof(mcmd->orig_iocb.imm_ntfy));
4423 }
4424 mcmd->tmr_func = fn;
4425 mcmd->flags = flags;
7c3f8fd1 4426 mcmd->reset_count = ha->base_qpair->chip_reset;
82de802a 4427 mcmd->qpair = ha->base_qpair;
72fcd4eb 4428 mcmd->vha = vha;
2d70c103
NB		 4429
4430 switch (fn) {
2d70c103 4431 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4432 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4433 break;
2d70c103
NB		 4434 }
4435
be92fc3f 4436 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4437 if (res != 0) {
4438 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4439 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4440 sess->vha->vp_idx, res);
4441 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4442 return -EFAULT;
4443 }
4444
4445 return 0;
4446}
4447
4448/* ha->hardware_lock supposed to be held on entry */
4449static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4450{
4451 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4452 struct qla_hw_data *ha = vha->hw;
4453 struct qla_tgt *tgt;
5d964837 4454 struct fc_port *sess;
f775bd14 4455 u64 unpacked_lun;
52c82823 4456 int fn;
7560151b 4457 unsigned long flags;
2d70c103 4458
0e8cd71c 4459 tgt = vha->vha_tgt.qla_tgt;
2d70c103 4460
2d70c103 4461 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4462
4463 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4464 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4465 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4466 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4467
f775bd14
QT		 4468 unpacked_lun =
4469 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 4470
4471 if (!sess) {
4472 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
4473 "qla_target(%d): task mgmt fn 0x%x for "
4474 "non-existant session\n", vha->vp_idx, fn);
4475 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
4476 sizeof(struct atio_from_isp));
4477 }
4478
726b8548 4479 if (sess->deleted)
e52a8b45
AP		 4480 return -EFAULT;
4481
2d70c103
NB		 4482 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4483}
4484
4485/* ha->hardware_lock supposed to be held on entry */
4486static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4487 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4488{
4489 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4490 struct qla_hw_data *ha = vha->hw;
4491 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4492 u64 unpacked_lun;
2d70c103
NB		 4493 int rc;
4494
4495 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4496 if (mcmd == NULL) {
4497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4498 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4499 vha->vp_idx, __func__);
4500 return -ENOMEM;
4501 }
4502 memset(mcmd, 0, sizeof(*mcmd));
4503
4504 mcmd->sess = sess;
4505 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4506 sizeof(mcmd->orig_iocb.imm_ntfy));
4507
f775bd14
QT		 4508 unpacked_lun =
4509 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4510 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4511 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4512 mcmd->qpair = ha->base_qpair;
2d70c103 4513
be92fc3f 4514 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4515 le16_to_cpu(iocb->u.isp2x.seq_id));
4516 if (rc != 0) {
4517 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4518 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4519 vha->vp_idx, rc);
4520 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4521 return -EFAULT;
4522 }
4523
4524 return 0;
4525}
4526
4527/* ha->hardware_lock supposed to be held on entry */
4528static int qlt_abort_task(struct scsi_qla_host *vha,
4529 struct imm_ntfy_from_isp *iocb)
4530{
4531 struct qla_hw_data *ha = vha->hw;
5d964837 4532 struct fc_port *sess;
2d70c103 4533 int loop_id;
7560151b 4534 unsigned long flags;
2d70c103
NB		 4535
4536 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4537
7560151b 4538 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4539 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4540 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4541
2d70c103
NB		 4542 if (sess == NULL) {
4543 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4544 "qla_target(%d): task abort for unexisting "
4545 "session\n", vha->vp_idx);
0e8cd71c 4546 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4547 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4548 }
4549
4550 return __qlt_abort_task(vha, iocb, sess);
4551}
4552
a6ca8878
AP		 4553void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4554{
726b8548
QT		 4555 if (rc != MBS_COMMAND_COMPLETE) {
4556 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4557 "%s: se_sess %p / sess %p from"
4558 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4559 " LOGO failed: %#x\n",
4560 __func__,
4561 fcport->se_sess,
4562 fcport,
4563 fcport->port_name, fcport->loop_id,
4564 fcport->d_id.b.domain, fcport->d_id.b.area,
4565 fcport->d_id.b.al_pa, rc);
4566 }
4567
4568 fcport->logout_completed = 1;
a6ca8878
AP		 4569}
4570
a6ca8878
AP		 4571/*
4572* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4573*
4574* Schedules sessions with matching port_id/loop_id but different wwn for
4575* deletion. Returns existing session with matching wwn if present.
4576* Null otherwise.
4577*/
726b8548
QT		 4578struct fc_port *
4579qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4580 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4581{
5d964837 4582 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4583 uint64_t other_wwn;
4584
b7bd104e
AP		 4585 *conflict_sess = NULL;
4586
5d964837 4587 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4588
4589 other_wwn = wwn_to_u64(other_sess->port_name);
4590
4591 if (wwn == other_wwn) {
4592 WARN_ON(sess);
4593 sess = other_sess;
4594 continue;
4595 }
4596
4597 /* find other sess with nport_id collision */
37cacc0a 4598 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4599 if (loop_id != other_sess->loop_id) {
726b8548 4600 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4601 "Invalidating sess %p loop_id %d wwn %llx.\n",
4602 other_sess, other_sess->loop_id, other_wwn);
4603
4604 /*
4605 * logout_on_delete is set by default, but another
4606 * session that has the same s_id/loop_id combo
4607 * might have cleared it when requested this session
4608 * deletion, so don't touch it
4609 */
25062aed 4610 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4611 } else {
4612 /*
4613 * Another wwn used to have our s_id/loop_id
b7bd104e 4614 * kill the session, but don't free the loop_id
a6ca8878 4615 */
83548fe2 4616 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4617 "Invalidating sess %p loop_id %d wwn %llx.\n",
4618 other_sess, other_sess->loop_id, other_wwn);
4619
b7bd104e 4620 other_sess->keep_nport_handle = 1;
43a7435e
QT		 4621 if (other_sess->disc_state != DSC_DELETED)
4622 *conflict_sess = other_sess;
25062aed 4623 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4624 }
4625 continue;
4626 }
4627
4628 /* find other sess with nport handle collision */
726b8548
QT		 4629 if ((loop_id == other_sess->loop_id) &&
4630 (loop_id != FC_NO_LOOP_ID)) {
4631 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4632 "Invalidating sess %p loop_id %d wwn %llx.\n",
4633 other_sess, other_sess->loop_id, other_wwn);
4634
4635 /* Same loop_id but different s_id
4636 * Ok to kill and logout */
25062aed 4637 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4638 }
4639 }
4640
4641 return sess;
4642}
4643
daddf5cf
AP		 4644/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4645static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4646{
4647 struct qla_tgt_sess_op *op;
4648 struct qla_tgt_cmd *cmd;
4649 uint32_t key;
4650 int count = 0;
8b631d87 4651 unsigned long flags;
daddf5cf
AP		 4652
4653 key = (((u32)s_id->b.domain << 16) |
4654 ((u32)s_id->b.area << 8) |
4655 ((u32)s_id->b.al_pa));
4656
8b631d87 4657 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4658 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4659 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4660
daddf5cf
AP		 4661 if (op_key == key) {
4662 op->aborted = true;
4663 count++;
4664 }
4665 }
41dc529a
QT		 4666
4667 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4668 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4669 if (op_key == key) {
4670 op->aborted = true;
4671 count++;
4672 }
4673 }
4674
daddf5cf
AP		 4675 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4676 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4677 if (cmd_key == key) {
193b50b9 4678 cmd->aborted = 1;
daddf5cf
AP		 4679 count++;
4680 }
4681 }
8b631d87 4682 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4683
4684 return count;
4685}
4686
ca3dad22
QT		 4687static int qlt_handle_login(struct scsi_qla_host *vha,
4688 struct imm_ntfy_from_isp *iocb)
4689{
4690 struct fc_port *sess = NULL, *conflict_sess = NULL;
4691 uint64_t wwn;
4692 port_id_t port_id;
4693 uint16_t loop_id, wd3_lo;
4694 int res = 0;
4695 struct qlt_plogi_ack_t *pla;
4696 unsigned long flags;
4697
4698 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4699
4700 port_id.b.domain = iocb->u.isp24.port_id[2];
4701 port_id.b.area = iocb->u.isp24.port_id[1];
4702 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4703 port_id.b.rsvd_1 = 0;
4704
4705 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4706
4707 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4708 abort_cmds_for_s_id(vha, &port_id);
4709
4710 if (wwn) {
4711 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4712 sess = qlt_find_sess_invalidate_other(vha, wwn,
4713 port_id, loop_id, &conflict_sess);
4714 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
51313cd7
QT		 4715 } else {
4716 ql_dbg(ql_dbg_disc, vha, 0xffff,
4717 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4718 __func__, __LINE__, loop_id, port_id.b24);
4719 qlt_send_term_imm_notif(vha, iocb, 1);
4720 goto out;
ca3dad22
QT		 4721 }
4722
4723 if (IS_SW_RESV_ADDR(port_id)) {
4724 res = 1;
4725 goto out;
4726 }
4727
4728 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4729 if (!pla) {
4730 qlt_send_term_imm_notif(vha, iocb, 1);
4731 goto out;
4732 }
4733
4734 if (conflict_sess) {
4735 conflict_sess->login_gen++;
4736 qlt_plogi_ack_link(vha, pla, conflict_sess,
4737 QLT_PLOGI_LINK_CONFLICT);
4738 }
4739
4740 if (!sess) {
4741 pla->ref_count++;
4742 ql_dbg(ql_dbg_disc, vha, 0xffff,
4743 "%s %d %8phC post new sess\n",
4744 __func__, __LINE__, iocb->u.isp24.port_name);
4745 qla24xx_post_newsess_work(vha, &port_id,
4746 iocb->u.isp24.port_name, pla);
4747 goto out;
4748 }
4749
4750 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4751 sess->d_id = port_id;
4752 sess->login_gen++;
4753
4754 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4755 sess->fw_login_state = DSC_LS_PRLI_PEND;
4756 sess->local = 0;
4757 sess->loop_id = loop_id;
4758 sess->d_id = port_id;
4759 sess->fw_login_state = DSC_LS_PRLI_PEND;
4760 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4761
4762 if (wd3_lo & BIT_7)
4763 sess->conf_compl_supported = 1;
4764
4765 if ((wd3_lo & BIT_4) == 0)
4766 sess->port_type = FCT_INITIATOR;
4767 else
4768 sess->port_type = FCT_TARGET;
4769
4770 } else
4771 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4772
4773
4774 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4775 "%s %d %8phC DS %d\n",
4776 __func__, __LINE__, sess->port_name, sess->disc_state);
4777
4778 switch (sess->disc_state) {
4779 case DSC_DELETED:
1803d2ec 4780 case DSC_LOGIN_PEND:
ca3dad22
QT		 4781 qlt_plogi_ack_unref(vha, pla);
4782 break;
4783
4784 default:
4785 /*
4786 * Under normal circumstances we want to release nport handle
4787 * during LOGO process to avoid nport handle leaks inside FW.
4788 * The exception is when LOGO is done while another PLOGI with
4789 * the same nport handle is waiting as might be the case here.
4790 * Note: there is always a possibily of a race where session
4791 * deletion has already started for other reasons (e.g. ACL
4792 * removal) and now PLOGI arrives:
4793 * 1. if PLOGI arrived in FW after nport handle has been freed,
4794 * FW must have assigned this PLOGI a new/same handle and we
4795 * can proceed ACK'ing it as usual when session deletion
4796 * completes.
4797 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4798 * bit reached it, the handle has now been released. We'll
4799 * get an error when we ACK this PLOGI. Nothing will be sent
4800 * back to initiator. Initiator should eventually retry
4801 * PLOGI and situation will correct itself.
4802 */
4803 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4804 (sess->d_id.b24 == port_id.b24));
4805
4806 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4807 "%s %d %8phC post del sess\n",
4808 __func__, __LINE__, sess->port_name);
4809
4810
147c591f 4811 qlt_schedule_sess_for_deletion(sess);
ca3dad22
QT		 4812 break;
4813 }
4814out:
4815 return res;
4816}
4817
2d70c103
NB		 4818/*
4819 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4820 */
4821static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4822 struct imm_ntfy_from_isp *iocb)
4823{
a6ca8878 4824 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4825 struct qla_hw_data *ha = vha->hw;
5d964837 4826 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4827 uint64_t wwn;
4828 port_id_t port_id;
4829 uint16_t loop_id;
4830 uint16_t wd3_lo;
2d70c103 4831 int res = 0;
7560151b 4832 unsigned long flags;
2d70c103 4833
a6ca8878
AP		 4834 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4835
4836 port_id.b.domain = iocb->u.isp24.port_id[2];
4837 port_id.b.area = iocb->u.isp24.port_id[1];
4838 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4839 port_id.b.rsvd_1 = 0;
4840
4841 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4842
726b8548
QT		 4843 ql_dbg(ql_dbg_disc, vha, 0xf026,
4844 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4845 vha->vp_idx, iocb->u.isp24.port_id[2],
4846 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4847 iocb->u.isp24.status_subcode, loop_id,
4848 iocb->u.isp24.port_name);
2d70c103 4849
a6ca8878
AP		 4850 /* res = 1 means ack at the end of thread
4851 * res = 0 means ack async/later.
4852 */
2d70c103
NB		 4853 switch (iocb->u.isp24.status_subcode) {
4854 case ELS_PLOGI:
ca3dad22
QT		 4855 res = qlt_handle_login(vha, iocb);
4856 break;
a6ca8878 4857
ca3dad22
QT		 4858 case ELS_PRLI:
4859 if (N2N_TOPO(ha)) {
4860 sess = qla2x00_find_fcport_by_wwpn(vha,
4861 iocb->u.isp24.port_name, 1);
726b8548 4862
ca3dad22
QT		 4863 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4864 ql_dbg(ql_dbg_disc, vha, 0xffff,
4865 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4866 __func__, __LINE__,
4867 iocb->u.isp24.port_name);
4868 qlt_send_term_imm_notif(vha, iocb, 1);
4869 break;
4870 }
726b8548 4871
ca3dad22 4872 res = qlt_handle_login(vha, iocb);
726b8548
QT		 4873 break;
4874 }
4875
a6ca8878
AP		 4876 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4877
7560151b
QT		 4878 if (wwn) {
4879 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4880 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4881 loop_id, &conflict_sess);
7560151b
QT		 4882 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4883 }
b7bd104e
AP		 4884
4885 if (conflict_sess) {
49ef16f4
QT		 4886 switch (conflict_sess->disc_state) {
4887 case DSC_DELETED:
4888 case DSC_DELETE_PEND:
4889 break;
4890 default:
4891 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4892 "PRLI with conflicting sess %p port %8phC\n",
4893 conflict_sess, conflict_sess->port_name);
4894 conflict_sess->fw_login_state =
4895 DSC_LS_PORT_UNAVAIL;
4896 qlt_send_term_imm_notif(vha, iocb, 1);
4897 res = 0;
4898 break;
4899 }
b7bd104e 4900 }
a6ca8878
AP		 4901
4902 if (sess != NULL) {
ec7193e2
QT		 4903 if (sess->fw_login_state != DSC_LS_PLOGI_PEND &&
4904 sess->fw_login_state != DSC_LS_PLOGI_COMP) {
a6ca8878
AP		 4905 /*
4906 * Impatient initiator sent PRLI before last
4907 * PLOGI could finish. Will force him to re-try,
4908 * while last one finishes.
4909 */
df673274 4910 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4911 "sess %p PRLI received, before plogi ack.\n",
4912 sess);
4913 qlt_send_term_imm_notif(vha, iocb, 1);
4914 res = 0;
4915 break;
4916 }
4917
4918 /*
4919 * This shouldn't happen under normal circumstances,
4920 * since we have deleted the old session during PLOGI
4921 */
df673274 4922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4923 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4924 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4925
4926 sess->local = 0;
4927 sess->loop_id = loop_id;
37cacc0a 4928 sess->d_id = port_id;
726b8548 4929 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4930
4931 if (wd3_lo & BIT_7)
4932 sess->conf_compl_supported = 1;
4933
726b8548
QT		 4934 if ((wd3_lo & BIT_4) == 0)
4935 sess->port_type = FCT_INITIATOR;
4936 else
4937 sess->port_type = FCT_TARGET;
df673274
AP		 4938 }
4939 res = 1; /* send notify ack */
4940
4941 /* Make session global (not used in fabric mode) */
4942 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4943 if (sess) {
83548fe2 4944 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4945 "%s %d %8phC post nack\n",
4946 __func__, __LINE__, sess->port_name);
4947 qla24xx_post_nack_work(vha, sess, iocb,
4948 SRB_NACK_PRLI);
4949 res = 0;
4950 } else {
4951 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4952 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4953 qla2xxx_wake_dpc(vha);
4954 }
a6ca8878 4955 } else {
726b8548 4956 if (sess) {
83548fe2 4957 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4958 "%s %d %8phC post nack\n",
4959 __func__, __LINE__, sess->port_name);
726b8548
QT		 4960 qla24xx_post_nack_work(vha, sess, iocb,
4961 SRB_NACK_PRLI);
4962 res = 0;
4963 }
4964 }
a6ca8878
AP		 4965 break;
4966
41dc529a
QT		 4967 case ELS_TPRLO:
4968 if (le16_to_cpu(iocb->u.isp24.flags) &
4969 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4970 loop_id = 0xFFFF;
4971 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4972 res = 1;
4973 break;
4974 }
4975 /* drop through */
2d70c103
NB		 4976 case ELS_LOGO:
4977 case ELS_PRLO:
726b8548
QT		 4978 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4979 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4980 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4981
4982 if (sess) {
4983 sess->login_gen++;
4984 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4985 sess->logo_ack_needed = 1;
4986 memcpy(sess->iocb, iocb, IOCB_SIZE);
4987 }
4988
2d70c103 4989 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4990
83548fe2 4991 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4992 "%s: logo %llx res %d sess %p ",
4993 __func__, wwn, res, sess);
4994 if (res == 0) {
41dc529a
QT		 4995 /*
4996 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4997 * for LOGO_ACK & sess delete
4998 */
726b8548
QT		 4999 BUG_ON(!sess);
5000 res = 0;
5001 } else {
41dc529a 5002 /* cmd did not go to upper layer. */
726b8548 5003 if (sess) {
147c591f 5004 qlt_schedule_sess_for_deletion(sess);
726b8548
QT		 5005 res = 0;
5006 }
5007 /* else logo will be ack */
5008 }
2d70c103
NB		 5009 break;
5010 case ELS_PDISC:
5011 case ELS_ADISC:
5012 {
0e8cd71c 5013 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5014 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5015 qlt_send_notify_ack(ha->base_qpair,
5016 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5017 tgt->link_reinit_iocb_pending = 0;
5018 }
726b8548
QT		 5019
5020 sess = qla2x00_find_fcport_by_wwpn(vha,
5021 iocb->u.isp24.port_name, 1);
5022 if (sess) {
83548fe2 5023 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 5024 "sess %p lid %d|%d DS %d LS %d\n",
5025 sess, sess->loop_id, loop_id,
5026 sess->disc_state, sess->fw_login_state);
5027 }
5028
2d70c103
NB		 5029 res = 1; /* send notify ack */
5030 break;
5031 }
5032
a6ca8878 5033 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 5034 default:
5035 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5036 "qla_target(%d): Unsupported ELS command %x "
5037 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5038 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5039 break;
5040 }
5041
ca3dad22
QT		 5042 ql_dbg(ql_dbg_disc, vha, 0xf026,
5043 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5044 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5045
2d70c103
NB		 5046 return res;
5047}
5048
2d70c103
NB		 5049/*
5050 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5051 */
5052static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5053 struct imm_ntfy_from_isp *iocb)
5054{
5055 struct qla_hw_data *ha = vha->hw;
5056 uint32_t add_flags = 0;
5057 int send_notify_ack = 1;
5058 uint16_t status;
5059
5060 status = le16_to_cpu(iocb->u.isp2x.status);
5061 switch (status) {
5062 case IMM_NTFY_LIP_RESET:
5063 {
5064 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5065 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5066 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5067 iocb->u.isp24.status_subcode);
5068
5069 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5070 send_notify_ack = 0;
5071 break;
5072 }
5073
5074 case IMM_NTFY_LIP_LINK_REINIT:
5075 {
0e8cd71c 5076 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5077 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5078 "qla_target(%d): LINK REINIT (loop %#x, "
5079 "subcode %x)\n", vha->vp_idx,
5080 le16_to_cpu(iocb->u.isp24.nport_handle),
5081 iocb->u.isp24.status_subcode);
5082 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5083 qlt_send_notify_ack(ha->base_qpair,
5084 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5085 }
5086 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5087 tgt->link_reinit_iocb_pending = 1;
5088 /*
5089 * QLogic requires to wait after LINK REINIT for possible
5090 * PDISC or ADISC ELS commands
5091 */
5092 send_notify_ack = 0;
5093 break;
5094 }
5095
5096 case IMM_NTFY_PORT_LOGOUT:
5097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5098 "qla_target(%d): Port logout (loop "
5099 "%#x, subcode %x)\n", vha->vp_idx,
5100 le16_to_cpu(iocb->u.isp24.nport_handle),
5101 iocb->u.isp24.status_subcode);
5102
5103 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5104 send_notify_ack = 0;
5105 /* The sessions will be cleared in the callback, if needed */
5106 break;
5107
5108 case IMM_NTFY_GLBL_TPRLO:
5109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5110 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5111 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5112 send_notify_ack = 0;
5113 /* The sessions will be cleared in the callback, if needed */
5114 break;
5115
5116 case IMM_NTFY_PORT_CONFIG:
5117 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5118 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5119 status);
5120 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5121 send_notify_ack = 0;
5122 /* The sessions will be cleared in the callback, if needed */
5123 break;
5124
5125 case IMM_NTFY_GLBL_LOGO:
5126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5127 "qla_target(%d): Link failure detected\n",
5128 vha->vp_idx);
5129 /* I_T nexus loss */
5130 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5131 send_notify_ack = 0;
5132 break;
5133
5134 case IMM_NTFY_IOCB_OVERFLOW:
5135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5136 "qla_target(%d): Cannot provide requested "
5137 "capability (IOCB overflowed the immediate notify "
5138 "resource count)\n", vha->vp_idx);
5139 break;
5140
5141 case IMM_NTFY_ABORT_TASK:
5142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5143 "qla_target(%d): Abort Task (S %08x I %#x -> "
5144 "L %#x)\n", vha->vp_idx,
5145 le16_to_cpu(iocb->u.isp2x.seq_id),
5146 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5147 le16_to_cpu(iocb->u.isp2x.lun));
5148 if (qlt_abort_task(vha, iocb) == 0)
5149 send_notify_ack = 0;
5150 break;
5151
5152 case IMM_NTFY_RESOURCE:
5153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5154 "qla_target(%d): Out of resources, host %ld\n",
5155 vha->vp_idx, vha->host_no);
5156 break;
5157
5158 case IMM_NTFY_MSG_RX:
5159 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5160 "qla_target(%d): Immediate notify task %x\n",
5161 vha->vp_idx, iocb->u.isp2x.task_flags);
5162 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5163 send_notify_ack = 0;
5164 break;
5165
5166 case IMM_NTFY_ELS:
5167 if (qlt_24xx_handle_els(vha, iocb) == 0)
5168 send_notify_ack = 0;
5169 break;
2d70c103
NB		 5170 default:
5171 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5172 "qla_target(%d): Received unknown immediate "
5173 "notify status %x\n", vha->vp_idx, status);
5174 break;
5175 }
5176
5177 if (send_notify_ack)
82de802a
QT		 5178 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5179 0, 0);
2d70c103
NB		 5180}
5181
5182/*
5183 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5184 * This function sends busy to ISP 2xxx or 24xx.
5185 */
82de802a 5186static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5187 struct atio_from_isp *atio, uint16_t status)
5188{
82de802a 5189 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5190 struct ctio7_to_24xx *ctio24;
5191 struct qla_hw_data *ha = vha->hw;
5192 request_t *pkt;
5d964837 5193 struct fc_port *sess = NULL;
7560151b 5194 unsigned long flags;
f7e761f5 5195 u16 temp;
2d70c103 5196
7560151b 5197 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5198 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5199 atio->u.isp24.fcp_hdr.s_id);
7560151b 5200 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5201 if (!sess) {
82de802a 5202 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5203 return 0;
2d70c103
NB		 5204 }
5205 /* Sending marker isn't necessary, since we called from ISR */
5206
82de802a 5207 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5208 if (!pkt) {
667024a3 5209 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5210 "qla_target(%d): %s failed: unable to allocate "
5211 "request packet", vha->vp_idx, __func__);
33e79977 5212 return -ENOMEM;
2d70c103
NB		 5213 }
5214
60a9eadb 5215 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5216 pkt->entry_count = 1;
5217 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5218
5219 ctio24 = (struct ctio7_to_24xx *)pkt;
5220 ctio24->entry_type = CTIO_TYPE7;
5221 ctio24->nport_handle = sess->loop_id;
ad950360 5222 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5223 ctio24->vp_index = vha->vp_idx;
5224 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5225 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5226 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5227 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5228 temp = (atio->u.isp24.attr << 9) |
2d70c103 5229 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5230 CTIO7_FLAGS_DONT_RET_CTIO;
5231 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5232 /*
5233 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5234 * if the explicit conformation is used.
5235 */
5236 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5237 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5238 /* Memory Barrier */
5239 wmb();
8abfa9e2
QT		 5240 if (qpair->reqq_start_iocbs)
5241 qpair->reqq_start_iocbs(qpair);
5242 else
5243 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5244 return 0;
5245}
5246
5247/*
5248 * This routine is used to allocate a command for either a QFull condition
5249 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5250 * out previously.
5251 */
5252static void
5253qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5254 struct atio_from_isp *atio, uint16_t status, int qfull)
5255{
5256 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5257 struct qla_hw_data *ha = vha->hw;
5d964837 5258 struct fc_port *sess;
33e79977
QT		 5259 struct se_session *se_sess;
5260 struct qla_tgt_cmd *cmd;
5261 int tag;
82de802a 5262 unsigned long flags;
33e79977
QT		 5263
5264 if (unlikely(tgt->tgt_stop)) {
5265 ql_dbg(ql_dbg_io, vha, 0x300a,
5266 "New command while device %p is shutting down\n", tgt);
5267 return;
5268 }
5269
5270 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5271 vha->hw->tgt.num_qfull_cmds_dropped++;
5272 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5273 vha->qla_stats.stat_max_qfull_cmds_dropped)
5274 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5275 vha->hw->tgt.num_qfull_cmds_dropped;
5276
5277 ql_dbg(ql_dbg_io, vha, 0x3068,
5278 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5279 vha->vp_idx, __func__,
5280 vha->hw->tgt.num_qfull_cmds_dropped);
5281
5282 qlt_chk_exch_leak_thresh_hold(vha);
5283 return;
5284 }
5285
5286 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5287 (vha, atio->u.isp24.fcp_hdr.s_id);
5288 if (!sess)
5289 return;
5290
5291 se_sess = sess->se_sess;
5292
5293 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5294 if (tag < 0)
5295 return;
5296
5297 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5298 if (!cmd) {
5299 ql_dbg(ql_dbg_io, vha, 0x3009,
5300 "qla_target(%d): %s: Allocation of cmd failed\n",
5301 vha->vp_idx, __func__);
5302
5303 vha->hw->tgt.num_qfull_cmds_dropped++;
5304 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5305 vha->qla_stats.stat_max_qfull_cmds_dropped)
5306 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5307 vha->hw->tgt.num_qfull_cmds_dropped;
5308
5309 qlt_chk_exch_leak_thresh_hold(vha);
5310 return;
5311 }
5312
5313 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5314
5315 qlt_incr_num_pend_cmds(vha);
5316 INIT_LIST_HEAD(&cmd->cmd_list);
5317 memcpy(&cmd->atio, atio, sizeof(*atio));
5318
5319 cmd->tgt = vha->vha_tgt.qla_tgt;
5320 cmd->vha = vha;
7c3f8fd1 5321 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5322 cmd->q_full = 1;
82de802a 5323 cmd->qpair = ha->base_qpair;
33e79977
QT		 5324
5325 if (qfull) {
5326 cmd->q_full = 1;
5327 /* NOTE: borrowing the state field to carry the status */
5328 cmd->state = status;
5329 } else
5330 cmd->term_exchg = 1;
5331
82de802a 5332 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5333 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5334
5335 vha->hw->tgt.num_qfull_cmds_alloc++;
5336 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5337 vha->qla_stats.stat_max_qfull_cmds_alloc)
5338 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5339 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5340 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5341}
5342
5343int
82de802a 5344qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5345{
82de802a 5346 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5347 struct qla_hw_data *ha = vha->hw;
5348 unsigned long flags;
5349 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5350 struct list_head free_list, q_full_list;
33e79977
QT		 5351 int rc = 0;
5352
5353 if (list_empty(&ha->tgt.q_full_list))
5354 return 0;
5355
5356 INIT_LIST_HEAD(&free_list);
82de802a 5357 INIT_LIST_HEAD(&q_full_list);
33e79977 5358
82de802a 5359 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5360 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5361 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5362 return 0;
5363 }
5364
82de802a
QT		 5365 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5366 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5367
5368 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5369 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5370 if (cmd->q_full)
5371 /* cmd->state is a borrowed field to hold status */
82de802a 5372 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5373 else if (cmd->term_exchg)
82de802a 5374 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5375
5376 if (rc == -ENOMEM)
5377 break;
5378
5379 if (cmd->q_full)
5380 ql_dbg(ql_dbg_io, vha, 0x3006,
5381 "%s: busy sent for ox_id[%04x]\n", __func__,
5382 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5383 else if (cmd->term_exchg)
5384 ql_dbg(ql_dbg_io, vha, 0x3007,
5385 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5386 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5387 else
5388 ql_dbg(ql_dbg_io, vha, 0x3008,
5389 "%s: Unexpected cmd in QFull list %p\n", __func__,
5390 cmd);
5391
5392 list_del(&cmd->cmd_list);
5393 list_add_tail(&cmd->cmd_list, &free_list);
5394
5395 /* piggy back on hardware_lock for protection */
5396 vha->hw->tgt.num_qfull_cmds_alloc--;
5397 }
82de802a 5398 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5399
5400 cmd = NULL;
5401
5402 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5403 list_del(&cmd->cmd_list);
5404 /* This cmd was never sent to TCM. There is no need
5405 * to schedule free or call free_cmd
5406 */
5407 qlt_free_cmd(cmd);
5408 }
82de802a
QT		 5409
5410 if (!list_empty(&q_full_list)) {
5411 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5412 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5413 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5414 }
5415
33e79977
QT		 5416 return rc;
5417}
5418
5419static void
82de802a
QT		 5420qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5421 uint16_t status)
33e79977
QT		 5422{
5423 int rc = 0;
82de802a 5424 struct scsi_qla_host *vha = qpair->vha;
33e79977 5425
82de802a 5426 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5427 if (rc == -ENOMEM)
5428 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5429}
5430
5431static int
82de802a
QT		 5432qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5433 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5434{
5435 struct qla_hw_data *ha = vha->hw;
5436 uint16_t status;
8b666809 5437 unsigned long flags;
33e79977
QT		 5438
5439 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5440 return 0;
5441
8b666809
QT		 5442 if (!ha_locked)
5443 spin_lock_irqsave(&ha->hardware_lock, flags);
33e79977 5444 status = temp_sam_status;
82de802a 5445 qlt_send_busy(qpair, atio, status);
8b666809
QT		 5446 if (!ha_locked)
5447 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5448
33e79977 5449 return 1;
2d70c103
NB		 5450}
5451
5452/* ha->hardware_lock supposed to be held on entry */
5453/* called via callback from qla2xxx */
5454static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5455 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5456{
5457 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5458 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5459 int rc;
2f424b9b 5460 unsigned long flags;
2d70c103
NB		 5461
5462 if (unlikely(tgt == NULL)) {
ec7193e2 5463 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5464 "ATIO pkt, but no tgt (ha %p)", ha);
5465 return;
5466 }
2d70c103
NB		 5467 /*
5468 * In tgt_stop mode we also should allow all requests to pass.
5469 * Otherwise, some commands can stuck.
5470 */
5471
2f424b9b 5472 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5473
5474 switch (atio->u.raw.entry_type) {
5475 case ATIO_TYPE7:
2d70c103
NB		 5476 if (unlikely(atio->u.isp24.exchange_addr ==
5477 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5478 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5479 "qla_target(%d): ATIO_TYPE7 "
5480 "received with UNKNOWN exchange address, "
5481 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5482 if (!ha_locked)
5483 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 5484 qlt_send_busy(ha->base_qpair, atio,
5485 SAM_STAT_TASK_SET_FULL);
2f424b9b 5486 if (!ha_locked)
82de802a
QT		 5487 spin_unlock_irqrestore(&ha->hardware_lock,
5488 flags);
2d70c103
NB		 5489 break;
5490 }
33e79977 5491
33e79977 5492 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5493 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5494 atio, ha_locked);
33e79977 5495 if (rc != 0) {
2f424b9b 5496 tgt->atio_irq_cmd_count--;
33e79977
QT		 5497 return;
5498 }
2d70c103 5499 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5500 } else {
2d70c103 5501 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5502 }
2d70c103
NB		 5503 if (unlikely(rc != 0)) {
5504 if (rc == -ESRCH) {
2f424b9b 5505 if (!ha_locked)
82de802a
QT		 5506 spin_lock_irqsave(&ha->hardware_lock,
5507 flags);
2f424b9b 5508
2d70c103 5509#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
82de802a
QT		 5510 qlt_send_busy(ha->base_qpair, atio,
5511 SAM_STAT_BUSY);
2d70c103 5512#else
82de802a
QT		 5513 qlt_send_term_exchange(ha->base_qpair, NULL,
5514 atio, 1, 0);
2d70c103 5515#endif
2f424b9b 5516 if (!ha_locked)
82de802a
QT		 5517 spin_unlock_irqrestore(
5518 &ha->hardware_lock, flags);
2d70c103
NB		 5519 } else {
5520 if (tgt->tgt_stop) {
5521 ql_dbg(ql_dbg_tgt, vha, 0xe059,
5522 "qla_target: Unable to send "
5523 "command to target for req, "
5524 "ignoring.\n");
5525 } else {
5526 ql_dbg(ql_dbg_tgt, vha, 0xe05a,
5527 "qla_target(%d): Unable to send "
5528 "command to target, sending BUSY "
5529 "status.\n", vha->vp_idx);
2f424b9b
QT		 5530 if (!ha_locked)
5531 spin_lock_irqsave(
5532 &ha->hardware_lock, flags);
82de802a
QT		 5533 qlt_send_busy(ha->base_qpair,
5534 atio, SAM_STAT_BUSY);
2f424b9b
QT		 5535 if (!ha_locked)
5536 spin_unlock_irqrestore(
5537 &ha->hardware_lock, flags);
2d70c103
NB		 5538 }
5539 }
5540 }
5541 break;
5542
5543 case IMMED_NOTIFY_TYPE:
5544 {
5545 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5546 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5547 "qla_target(%d): Received ATIO packet %x "
5548 "with error status %x\n", vha->vp_idx,
5549 atio->u.raw.entry_type,
5550 atio->u.isp2x.entry_status);
5551 break;
5552 }
5553 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5554
5555 if (!ha_locked)
5556 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5557 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5558 if (!ha_locked)
5559 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5560 break;
5561 }
5562
5563 default:
5564 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5565 "qla_target(%d): Received unknown ATIO atio "
5566 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5567 break;
5568 }
5569
2f424b9b 5570 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5571}
5572
5573/* ha->hardware_lock supposed to be held on entry */
5574/* called via callback from qla2xxx */
82de802a
QT		 5575static void qlt_response_pkt(struct scsi_qla_host *vha,
5576 struct rsp_que *rsp, response_t *pkt)
2d70c103 5577{
0e8cd71c 5578 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5579
5580 if (unlikely(tgt == NULL)) {
5581 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5582 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5583 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5584 return;
5585 }
5586
2d70c103
NB		 5587 /*
5588 * In tgt_stop mode we also should allow all requests to pass.
5589 * Otherwise, some commands can stuck.
5590 */
5591
2d70c103 5592 switch (pkt->entry_type) {
f83adb61 5593 case CTIO_CRC2:
2d70c103
NB		 5594 case CTIO_TYPE7:
5595 {
5596 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
82de802a 5597 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5598 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5599 entry);
5600 break;
5601 }
5602
5603 case ACCEPT_TGT_IO_TYPE:
5604 {
5605 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5606 int rc;
2d70c103 5607 if (atio->u.isp2x.status !=
ad950360 5608 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5609 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5610 "qla_target(%d): ATIO with error "
5611 "status %x received\n", vha->vp_idx,
5612 le16_to_cpu(atio->u.isp2x.status));
5613 break;
5614 }
2d70c103 5615
82de802a 5616 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5617 if (rc != 0)
33e79977 5618 return;
33e79977 5619
2d70c103
NB		 5620 rc = qlt_handle_cmd_for_atio(vha, atio);
5621 if (unlikely(rc != 0)) {
5622 if (rc == -ESRCH) {
5623#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
82de802a 5624 qlt_send_busy(rsp->qpair, atio, 0);
2d70c103 5625#else
82de802a 5626 qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0);
2d70c103
NB		 5627#endif
5628 } else {
5629 if (tgt->tgt_stop) {
5630 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5631 "qla_target: Unable to send "
5632 "command to target, sending TERM "
5633 "EXCHANGE for rsp\n");
82de802a 5634 qlt_send_term_exchange(rsp->qpair, NULL,
a07100e0 5635 atio, 1, 0);
2d70c103
NB		 5636 } else {
5637 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5638 "qla_target(%d): Unable to send "
5639 "command to target, sending BUSY "
5640 "status\n", vha->vp_idx);
82de802a 5641 qlt_send_busy(rsp->qpair, atio, 0);
2d70c103
NB		 5642 }
5643 }
5644 }
5645 }
5646 break;
5647
5648 case CONTINUE_TGT_IO_TYPE:
5649 {
5650 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5651 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5652 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5653 entry);
5654 break;
5655 }
5656
5657 case CTIO_A64_TYPE:
5658 {
5659 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5660 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5661 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5662 entry);
5663 break;
5664 }
5665
5666 case IMMED_NOTIFY_TYPE:
5667 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5668 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5669 break;
5670
5671 case NOTIFY_ACK_TYPE:
5672 if (tgt->notify_ack_expected > 0) {
5673 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5674 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5675 "NOTIFY_ACK seq %08x status %x\n",
5676 le16_to_cpu(entry->u.isp2x.seq_id),
5677 le16_to_cpu(entry->u.isp2x.status));
5678 tgt->notify_ack_expected--;
5679 if (entry->u.isp2x.status !=
ad950360 5680 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5681 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5682 "qla_target(%d): NOTIFY_ACK "
5683 "failed %x\n", vha->vp_idx,
5684 le16_to_cpu(entry->u.isp2x.status));
5685 }
5686 } else {
5687 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5688 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5689 vha->vp_idx);
5690 }
5691 break;
5692
5693 case ABTS_RECV_24XX:
5694 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5695 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5696 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5697 break;
5698
5699 case ABTS_RESP_24XX:
5700 if (tgt->abts_resp_expected > 0) {
5701 struct abts_resp_from_24xx_fw *entry =
5702 (struct abts_resp_from_24xx_fw *)pkt;
5703 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5704 "ABTS_RESP_24XX: compl_status %x\n",
5705 entry->compl_status);
5706 tgt->abts_resp_expected--;
5707 if (le16_to_cpu(entry->compl_status) !=
5708 ABTS_RESP_COMPL_SUCCESS) {
5709 if ((entry->error_subcode1 == 0x1E) &&
5710 (entry->error_subcode2 == 0)) {
5711 /*
5712 * We've got a race here: aborted
5713 * exchange not terminated, i.e.
5714 * response for the aborted command was
5715 * sent between the abort request was
5716 * received and processed.
5717 * Unfortunately, the firmware has a
5718 * silly requirement that all aborted
5719 * exchanges must be explicitely
5720 * terminated, otherwise it refuses to
5721 * send responses for the abort
5722 * requests. So, we have to
5723 * (re)terminate the exchange and retry
5724 * the abort response.
5725 */
5726 qlt_24xx_retry_term_exchange(vha,
5727 entry);
5728 } else
5729 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5730 "qla_target(%d): ABTS_RESP_24XX "
5731 "failed %x (subcode %x:%x)",
5732 vha->vp_idx, entry->compl_status,
5733 entry->error_subcode1,
5734 entry->error_subcode2);
5735 }
5736 } else {
5737 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5738 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5739 "received\n", vha->vp_idx);
5740 }
5741 break;
5742
5743 default:
5744 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5745 "qla_target(%d): Received unknown response pkt "
5746 "type %x\n", vha->vp_idx, pkt->entry_type);
5747 break;
5748 }
5749
2d70c103
NB		 5750}
5751
5752/*
5753 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5754 */
5755void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5756 uint16_t *mailbox)
5757{
5758 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5759 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5760 int login_code;
2d70c103 5761
3a33dc95 5762 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5763 return;
5764
2d70c103
NB		 5765 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5766 IS_QLA2100(ha))
5767 return;
5768 /*
5769 * In tgt_stop mode we also should allow all requests to pass.
5770 * Otherwise, some commands can stuck.
5771 */
5772
2d70c103
NB		 5773
5774 switch (code) {
5775 case MBA_RESET: /* Reset */
5776 case MBA_SYSTEM_ERR: /* System Error */
5777 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5778 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5779 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5780 "qla_target(%d): System error async event %#x "
6efb3c0a 5781 "occurred", vha->vp_idx, code);
2d70c103
NB		 5782 break;
5783 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5784 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5785 break;
5786
5787 case MBA_LOOP_UP:
5788 {
5789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5790 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5791 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5792 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5793 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5794 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5795 qlt_send_notify_ack(ha->base_qpair,
5796 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5797 0, 0, 0, 0, 0, 0);
5798 tgt->link_reinit_iocb_pending = 0;
5799 }
5800 break;
5801 }
5802
5803 case MBA_LIP_OCCURRED:
5804 case MBA_LOOP_DOWN:
5805 case MBA_LIP_RESET:
5806 case MBA_RSCN_UPDATE:
5807 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5808 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5809 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5810 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5811 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5812 break;
5813
ead03855 5814 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5815 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5816 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5817 vha->vp_idx,
5818 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5819 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5820
5821 if (le16_to_cpu(mailbox[3]) == 1) {
5822 /* exchange starvation. */
5823 vha->hw->exch_starvation++;
5824 if (vha->hw->exch_starvation > 5) {
83548fe2 5825 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5826 "Exchange starvation-. Resetting RISC\n");
5827
5828 vha->hw->exch_starvation = 0;
5829 if (IS_P3P_TYPE(vha->hw))
5830 set_bit(FCOE_CTX_RESET_NEEDED,
5831 &vha->dpc_flags);
5832 else
5833 set_bit(ISP_ABORT_NEEDED,
5834 &vha->dpc_flags);
5835 qla2xxx_wake_dpc(vha);
5836 }
5837 }
5838 break;
5839
2d70c103
NB		 5840 case MBA_PORT_UPDATE:
5841 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5842 "qla_target(%d): Port update async event %#x "
6efb3c0a 5843 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5844 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5845 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5846 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5847
5848 login_code = le16_to_cpu(mailbox[2]);
ead03855 5849 if (login_code == 0x4) {
2d70c103
NB		 5850 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5851 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5852 vha->hw->exch_starvation = 0;
5853 } else if (login_code == 0x7)
2d70c103
NB		 5854 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5855 "Async MB 2: Port Logged Out\n");
5856 break;
2d70c103 5857 default:
2d70c103
NB		 5858 break;
5859 }
5860
2d70c103
NB		 5861}
5862
5863static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5864 uint16_t loop_id)
5865{
726b8548 5866 fc_port_t *fcport, *tfcp, *del;
2d70c103 5867 int rc;
726b8548
QT		 5868 unsigned long flags;
5869 u8 newfcport = 0;
2d70c103 5870
96c1eb7b 5871 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 5872 if (!fcport) {
5873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5874 "qla_target(%d): Allocation of tmp FC port failed",
5875 vha->vp_idx);
5876 return NULL;
5877 }
5878
2d70c103
NB		 5879 fcport->loop_id = loop_id;
5880
15f30a57 5881 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5882 if (rc != QLA_SUCCESS) {
5883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5884 "qla_target(%d): Failed to retrieve fcport "
5885 "information -- get_port_database() returned %x "
5886 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5887 kfree(fcport);
5888 return NULL;
5889 }
5890
726b8548
QT		 5891 del = NULL;
5892 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5893 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5894
5895 if (tfcp) {
5896 tfcp->d_id = fcport->d_id;
5897 tfcp->port_type = fcport->port_type;
5898 tfcp->supported_classes = fcport->supported_classes;
5899 tfcp->flags |= fcport->flags;
bcee7186 5900 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 5901
5902 del = fcport;
5903 fcport = tfcp;
5904 } else {
5905 if (vha->hw->current_topology == ISP_CFG_F)
5906 fcport->flags |= FCF_FABRIC_DEVICE;
5907
5908 list_add_tail(&fcport->list, &vha->vp_fcports);
5909 if (!IS_SW_RESV_ADDR(fcport->d_id))
5910 vha->fcport_count++;
5911 fcport->login_gen++;
5912 fcport->disc_state = DSC_LOGIN_COMPLETE;
5913 fcport->login_succ = 1;
5914 newfcport = 1;
5915 }
5916
5917 fcport->deleted = 0;
5918 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5919
5920 switch (vha->host->active_mode) {
5921 case MODE_INITIATOR:
5922 case MODE_DUAL:
5923 if (newfcport) {
5924 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5925 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5926 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5927 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5928 qla24xx_post_upd_fcport_work(vha, fcport);
5929 } else {
83548fe2 5930 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5931 "%s %d %8phC post gpsc fcp_cnt %d\n",
5932 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5933 qla24xx_post_gpsc_work(vha, fcport);
5934 }
5935 }
5936 break;
5937
5938 case MODE_TARGET:
5939 default:
5940 break;
5941 }
5942 if (del)
5943 qla2x00_free_fcport(del);
5944
2d70c103
NB		 5945 return fcport;
5946}
5947
5948/* Must be called under tgt_mutex */
5d964837 5949static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5950 uint8_t *s_id)
5951{
5d964837 5952 struct fc_port *sess = NULL;
2d70c103
NB		 5953 fc_port_t *fcport = NULL;
5954 int rc, global_resets;
5955 uint16_t loop_id = 0;
5956
726b8548
QT		 5957 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5958 /*
5959 * This is Domain Controller, so it should be
5960 * OK to drop SCSI commands from it.
5961 */
5962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5963 "Unable to find initiator with S_ID %x:%x:%x",
5964 s_id[0], s_id[1], s_id[2]);
5965 return NULL;
5966 }
5967
71cdc079
AP		 5968 mutex_lock(&vha->vha_tgt.tgt_mutex);
5969
2d70c103 5970retry:
0e8cd71c
SK		 5971 global_resets =
5972 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5973
5974 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5975 if (rc != 0) {
71cdc079
AP		 5976 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5977
726b8548
QT		 5978 ql_log(ql_log_info, vha, 0xf071,
5979 "qla_target(%d): Unable to find "
5980 "initiator with S_ID %x:%x:%x",
5981 vha->vp_idx, s_id[0], s_id[1],
5982 s_id[2]);
71cdc079
AP		 5983
5984 if (rc == -ENOENT) {
5985 qlt_port_logo_t logo;
5986 sid_to_portid(s_id, &logo.id);
5987 logo.cmd_count = 1;
5988 qlt_send_first_logo(vha, &logo);
5989 }
5990
2d70c103
NB		 5991 return NULL;
5992 }
5993
5994 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5995 if (!fcport) {
5996 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5997 return NULL;
71cdc079 5998 }
2d70c103
NB		 5999
6000 if (global_resets !=
0e8cd71c 6001 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 6002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6003 "qla_target(%d): global reset during session discovery "
6004 "(counter was %d, new %d), retrying", vha->vp_idx,
6005 global_resets,
0e8cd71c
SK		 6006 atomic_read(&vha->vha_tgt.
6007 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 6008 goto retry;
6009 }
6010
6011 sess = qlt_create_sess(vha, fcport, true);
6012
71cdc079
AP		 6013 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6014
2d70c103
NB		 6015 return sess;
6016}
6017
6018static void qlt_abort_work(struct qla_tgt *tgt,
6019 struct qla_tgt_sess_work_param *prm)
6020{
6021 struct scsi_qla_host *vha = tgt->vha;
6022 struct qla_hw_data *ha = vha->hw;
5d964837 6023 struct fc_port *sess = NULL;
7560151b 6024 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 6025 uint8_t s_id[3];
6026 int rc;
6027
7560151b 6028 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 6029
6030 if (tgt->tgt_stop)
7560151b 6031 goto out_term2;
2d70c103
NB		 6032
6033 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
6034 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
6035 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
6036
1bc70625 6037 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2d70c103 6038 if (!sess) {
7560151b 6039 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 6040
2d70c103
NB		 6041 sess = qlt_make_local_sess(vha, s_id);
6042 /* sess has got an extra creation ref */
2d70c103 6043
7560151b 6044 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 6045 if (!sess)
7560151b 6046 goto out_term2;
2d70c103 6047 } else {
726b8548 6048 if (sess->deleted) {
e52a8b45 6049 sess = NULL;
7560151b 6050 goto out_term2;
e52a8b45
AP		 6051 }
6052
726b8548 6053 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6054 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 6055 "%s: kref_get fail %8phC \n",
6056 __func__, sess->port_name);
6057 sess = NULL;
6058 goto out_term2;
6059 }
2d70c103
NB		 6060 }
6061
2d70c103 6062 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 6063 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6064
f3ebb94b
BVA		 6065 ha->tgt.tgt_ops->put_sess(sess);
6066
2d70c103
NB		 6067 if (rc != 0)
6068 goto out_term;
2d70c103
NB		 6069 return;
6070
7560151b 6071out_term2:
f3ebb94b
BVA		 6072 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6073
f159b3c7
QT		 6074 if (sess)
6075 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6076
2d70c103 6077out_term:
f159b3c7 6078 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6079 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6080 FCP_TMF_REJECTED, false);
7560151b 6081 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6082}
6083
6084static void qlt_tmr_work(struct qla_tgt *tgt,
6085 struct qla_tgt_sess_work_param *prm)
6086{
6087 struct atio_from_isp *a = &prm->tm_iocb2;
6088 struct scsi_qla_host *vha = tgt->vha;
6089 struct qla_hw_data *ha = vha->hw;
5d964837 6090 struct fc_port *sess = NULL;
2d70c103
NB		 6091 unsigned long flags;
6092 uint8_t *s_id = NULL; /* to hide compiler warnings */
6093 int rc;
f775bd14 6094 u64 unpacked_lun;
52c82823 6095 int fn;
2d70c103
NB		 6096 void *iocb;
6097
7560151b 6098 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6099
6100 if (tgt->tgt_stop)
f159b3c7 6101 goto out_term2;
2d70c103
NB		 6102
6103 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6104 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6105 if (!sess) {
7560151b 6106 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6107
2d70c103
NB		 6108 sess = qlt_make_local_sess(vha, s_id);
6109 /* sess has got an extra creation ref */
2d70c103 6110
7560151b 6111 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6112 if (!sess)
f159b3c7 6113 goto out_term2;
2d70c103 6114 } else {
726b8548 6115 if (sess->deleted) {
e52a8b45 6116 sess = NULL;
f159b3c7 6117 goto out_term2;
e52a8b45
AP		 6118 }
6119
726b8548 6120 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6121 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6122 "%s: kref_get fail %8phC\n",
6123 __func__, sess->port_name);
6124 sess = NULL;
f159b3c7 6125 goto out_term2;
726b8548 6126 }
2d70c103
NB		 6127 }
6128
6129 iocb = a;
2d70c103 6130 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6131 unpacked_lun =
6132 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6133
6134 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
7560151b 6135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7 6136
f3ebb94b
BVA		 6137 ha->tgt.tgt_ops->put_sess(sess);
6138
f159b3c7
QT		 6139 if (rc != 0)
6140 goto out_term;
2d70c103
NB		 6141 return;
6142
f159b3c7
QT		 6143out_term2:
6144 if (sess)
6145 ha->tgt.tgt_ops->put_sess(sess);
6146 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6147out_term:
82de802a 6148 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6149}
6150
6151static void qlt_sess_work_fn(struct work_struct *work)
6152{
6153 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6154 struct scsi_qla_host *vha = tgt->vha;
6155 unsigned long flags;
6156
6157 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6158
6159 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6160 while (!list_empty(&tgt->sess_works_list)) {
6161 struct qla_tgt_sess_work_param *prm = list_entry(
6162 tgt->sess_works_list.next, typeof(*prm),
6163 sess_works_list_entry);
6164
6165 /*
6166 * This work can be scheduled on several CPUs at time, so we
6167 * must delete the entry to eliminate double processing
6168 */
6169 list_del(&prm->sess_works_list_entry);
6170
6171 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6172
6173 switch (prm->type) {
6174 case QLA_TGT_SESS_WORK_ABORT:
6175 qlt_abort_work(tgt, prm);
6176 break;
6177 case QLA_TGT_SESS_WORK_TM:
6178 qlt_tmr_work(tgt, prm);
6179 break;
6180 default:
6181 BUG_ON(1);
6182 break;
6183 }
6184
6185 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6186
6187 kfree(prm);
6188 }
6189 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6190}
6191
6192/* Must be called under tgt_host_action_mutex */
6193int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6194{
6195 struct qla_tgt *tgt;
e326d22a
QT		 6196 int rc, i;
6197 struct qla_qpair_hint *h;
2d70c103
NB		 6198
6199 if (!QLA_TGT_MODE_ENABLED())
6200 return 0;
6201
33c36c0a
AE		 6202 if (!IS_TGT_MODE_CAPABLE(ha)) {
6203 ql_log(ql_log_warn, base_vha, 0xe070,
6204 "This adapter does not support target mode.\n");
6205 return 0;
6206 }
6207
2d70c103 6208 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6209 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6210
0e8cd71c 6211 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6212
6213 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6214 if (!tgt) {
6215 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6216 "Unable to allocate struct qla_tgt\n");
6217 return -ENOMEM;
6218 }
6219
e326d22a
QT		 6220 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6221 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6222 if (!tgt->qphints) {
6223 kfree(tgt);
6224 ql_log(ql_log_warn, base_vha, 0x0197,
6225 "Unable to allocate qpair hints.\n");
6226 return -ENOMEM;
6227 }
6228
2d70c103
NB		 6229 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6230 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6231
e326d22a
QT		 6232 rc = btree_init64(&tgt->lun_qpair_map);
6233 if (rc) {
6234 kfree(tgt->qphints);
6235 kfree(tgt);
6236 ql_log(ql_log_info, base_vha, 0x0198,
6237 "Unable to initialize lun_qpair_map btree\n");
6238 return -EIO;
6239 }
6240 h = &tgt->qphints[0];
6241 h->qpair = ha->base_qpair;
6242 INIT_LIST_HEAD(&h->hint_elem);
6243 h->cpuid = ha->base_qpair->cpuid;
6244 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6245
6246 for (i = 0; i < ha->max_qpairs; i++) {
6247 unsigned long flags;
6248
6249 struct qla_qpair *qpair = ha->queue_pair_map[i];
6250 h = &tgt->qphints[i + 1];
6251 INIT_LIST_HEAD(&h->hint_elem);
6252 if (qpair) {
6253 h->qpair = qpair;
6254 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6255 list_add_tail(&h->hint_elem, &qpair->hints_list);
6256 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6257 h->cpuid = qpair->cpuid;
6258 }
6259 }
6260
2d70c103
NB		 6261 tgt->ha = ha;
6262 tgt->vha = base_vha;
6263 init_waitqueue_head(&tgt->waitQ);
2d70c103 6264 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6265 spin_lock_init(&tgt->sess_work_lock);
6266 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6267 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6268 atomic_set(&tgt->tgt_global_resets_count, 0);
6269
0e8cd71c 6270 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6271
6272 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6273 "qla_target(%d): using 64 Bit PCI addressing",
6274 base_vha->vp_idx);
2d70c103
NB		 6275 /* 3 is reserved */
6276 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6277
6278 mutex_lock(&qla_tgt_mutex);
6279 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6280 mutex_unlock(&qla_tgt_mutex);
6281
f1443eeb
QT		 6282 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6283 ha->tgt.tgt_ops->add_target(base_vha);
6284
2d70c103
NB		 6285 return 0;
6286}
6287
6288/* Must be called under tgt_host_action_mutex */
6289int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6290{
0e8cd71c 6291 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6292 return 0;
6293
ddb95145
NB		 6294 if (vha->fc_vport) {
6295 qlt_release(vha->vha_tgt.qla_tgt);
6296 return 0;
6297 }
33e79977
QT		 6298
6299 /* free left over qfull cmds */
6300 qlt_init_term_exchange(vha);
6301
2d70c103
NB		 6302 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6303 vha->host_no, ha);
0e8cd71c 6304 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6305
6306 return 0;
6307}
6308
482c9dc7
QT		 6309void qlt_remove_target_resources(struct qla_hw_data *ha)
6310{
6311 struct scsi_qla_host *node;
6312 u32 key = 0;
6313
6314 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6315 btree_remove32(&ha->tgt.host_map, key);
6316
6317 btree_destroy32(&ha->tgt.host_map);
6318}
6319
2d70c103
NB		 6320static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6321 unsigned char *b)
6322{
6323 int i;
6324
6325 pr_debug("qla2xxx HW vha->node_name: ");
6326 for (i = 0; i < WWN_SIZE; i++)
6327 pr_debug("%02x ", vha->node_name[i]);
6328 pr_debug("\n");
6329 pr_debug("qla2xxx HW vha->port_name: ");
6330 for (i = 0; i < WWN_SIZE; i++)
6331 pr_debug("%02x ", vha->port_name[i]);
6332 pr_debug("\n");
6333
6334 pr_debug("qla2xxx passed configfs WWPN: ");
6335 put_unaligned_be64(wwpn, b);
6336 for (i = 0; i < WWN_SIZE; i++)
6337 pr_debug("%02x ", b[i]);
6338 pr_debug("\n");
6339}
6340
6341/**
6342 * qla_tgt_lport_register - register lport with external module
6343 *
6344 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
6345 * @wwpn: Passwd FC target WWPN
6346 * @callback: lport initialization callback for tcm_qla2xxx code
6347 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
6348 */
49a47f2c
NB		 6349int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6350 u64 npiv_wwpn, u64 npiv_wwnn,
6351 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6352{
6353 struct qla_tgt *tgt;
6354 struct scsi_qla_host *vha;
6355 struct qla_hw_data *ha;
6356 struct Scsi_Host *host;
6357 unsigned long flags;
6358 int rc;
6359 u8 b[WWN_SIZE];
6360
6361 mutex_lock(&qla_tgt_mutex);
6362 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6363 vha = tgt->vha;
6364 ha = vha->hw;
6365
6366 host = vha->host;
6367 if (!host)
6368 continue;
6369
2d70c103
NB		 6370 if (!(host->hostt->supported_mode & MODE_TARGET))
6371 continue;
6372
6373 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6374 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6375 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6376 host->host_no);
6377 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6378 continue;
6379 }
ddb95145
NB		 6380 if (tgt->tgt_stop) {
6381 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6382 host->host_no);
6383 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6384 continue;
6385 }
2d70c103
NB		 6386 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6387
6388 if (!scsi_host_get(host)) {
6389 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6390 "Unable to scsi_host_get() for"
6391 " qla2xxx scsi_host\n");
6392 continue;
6393 }
49a47f2c 6394 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6395
6396 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6397 scsi_host_put(host);
6398 continue;
6399 }
49a47f2c
NB		 6400 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6401 if (rc != 0)
6402 scsi_host_put(host);
6403
ddb95145 6404 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6405 return rc;
6406 }
6407 mutex_unlock(&qla_tgt_mutex);
6408
6409 return -ENODEV;
6410}
6411EXPORT_SYMBOL(qlt_lport_register);
6412
6413/**
6414 * qla_tgt_lport_deregister - Degister lport
6415 *
6416 * @vha: Registered scsi_qla_host pointer
6417 */
6418void qlt_lport_deregister(struct scsi_qla_host *vha)
6419{
6420 struct qla_hw_data *ha = vha->hw;
6421 struct Scsi_Host *sh = vha->host;
6422 /*
6423 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6424 */
0e8cd71c 6425 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6426 ha->tgt.tgt_ops = NULL;
6427 /*
6428 * Release the Scsi_Host reference for the underlying qla2xxx host
6429 */
6430 scsi_host_put(sh);
6431}
6432EXPORT_SYMBOL(qlt_lport_deregister);
6433
6434/* Must be called under HW lock */
55a9066f 6435static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6436{
2d70c103
NB		 6437 switch (ql2x_ini_mode) {
6438 case QLA2XXX_INI_MODE_DISABLED:
6439 case QLA2XXX_INI_MODE_EXCLUSIVE:
6440 vha->host->active_mode = MODE_TARGET;
6441 break;
6442 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6443 vha->host->active_mode = MODE_UNKNOWN;
6444 break;
6445 case QLA2XXX_INI_MODE_DUAL:
6446 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6447 break;
6448 default:
6449 break;
6450 }
2d70c103
NB		 6451}
6452
6453/* Must be called under HW lock */
55a9066f 6454static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6455{
2d70c103
NB		 6456 switch (ql2x_ini_mode) {
6457 case QLA2XXX_INI_MODE_DISABLED:
6458 vha->host->active_mode = MODE_UNKNOWN;
6459 break;
6460 case QLA2XXX_INI_MODE_EXCLUSIVE:
6461 vha->host->active_mode = MODE_INITIATOR;
6462 break;
6463 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6464 case QLA2XXX_INI_MODE_DUAL:
6465 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6466 break;
6467 default:
6468 break;
6469 }
2d70c103
NB		 6470}
6471
6472/*
6473 * qla_tgt_enable_vha - NO LOCK HELD
6474 *
6475 * host_reset, bring up w/ Target Mode Enabled
6476 */
6477void
6478qlt_enable_vha(struct scsi_qla_host *vha)
6479{
6480 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6481 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6482 unsigned long flags;
0e8cd71c 6483 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6484
6485 if (!tgt) {
6486 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6487 "Unable to locate qla_tgt pointer from"
6488 " struct qla_hw_data\n");
6489 dump_stack();
6490 return;
6491 }
6492
6493 spin_lock_irqsave(&ha->hardware_lock, flags);
6494 tgt->tgt_stopped = 0;
6495 qlt_set_mode(vha);
6496 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6497
0e8cd71c
SK		 6498 if (vha->vp_idx) {
6499 qla24xx_disable_vp(vha);
6500 qla24xx_enable_vp(vha);
6501 } else {
6502 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6503 qla2xxx_wake_dpc(base_vha);
1221bd3c
BVA		 6504 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
6505 QLA_SUCCESS);
0e8cd71c 6506 }
2d70c103
NB		 6507}
6508EXPORT_SYMBOL(qlt_enable_vha);
6509
6510/*
6511 * qla_tgt_disable_vha - NO LOCK HELD
6512 *
6513 * Disable Target Mode and reset the adapter
6514 */
55a9066f 6515static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6516{
6517 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6518 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6519 unsigned long flags;
6520
6521 if (!tgt) {
6522 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6523 "Unable to locate qla_tgt pointer from"
6524 " struct qla_hw_data\n");
6525 dump_stack();
6526 return;
6527 }
6528
6529 spin_lock_irqsave(&ha->hardware_lock, flags);
6530 qlt_clear_mode(vha);
6531 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6532
6533 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6534 qla2xxx_wake_dpc(vha);
1221bd3c
BVA		 6535 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
6536 ql_dbg(ql_dbg_tgt, vha, 0xe081,
6537 "qla2x00_wait_for_hba_online() failed\n");
2d70c103
NB		 6538}
6539
6540/*
6541 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6542 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6543 * members.
6544 */
6545void
6546qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6547{
0e8cd71c
SK		 6548 vha->vha_tgt.qla_tgt = NULL;
6549
6550 mutex_init(&vha->vha_tgt.tgt_mutex);
6551 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6552
6553 qlt_clear_mode(vha);
6554
6555 /*
6556 * NOTE: Currently the value is kept the same for <24xx and
6557 * >=24xx ISPs. If it is necessary to change it,
6558 * the check should be added for specific ISPs,
6559 * assigning the value appropriately.
6560 */
6561 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6562
6563 qlt_add_target(ha, vha);
2d70c103
NB		 6564}
6565
6566void
6567qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
6568{
6569 /*
6570 * FC-4 Feature bit 0 indicates target functionality to the name server.
6571 */
6572 if (qla_tgt_mode_enabled(vha)) {
726b8548 6573 ct_req->req.rff_id.fc4_feature = BIT_0;
2d70c103
NB		 6574 } else if (qla_ini_mode_enabled(vha)) {
6575 ct_req->req.rff_id.fc4_feature = BIT_1;
726b8548
QT		 6576 } else if (qla_dual_mode_enabled(vha))
6577 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
2d70c103
NB		 6578}
6579
6580/*
6581 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6582 * @ha: HA context
6583 *
6584 * Beginning of ATIO ring has initialization control block already built
6585 * by nvram config routine.
6586 *
6587 * Returns 0 on success.
6588 */
6589void
6590qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6591{
6592 struct qla_hw_data *ha = vha->hw;
6593 uint16_t cnt;
6594 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6595
ead03855 6596 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6597 return;
6598
6599 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6600 pkt->u.raw.signature = ATIO_PROCESSED;
6601 pkt++;
6602 }
6603
6604}
6605
6606/*
6607 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6608 * @ha: SCSI driver HA context
6609 */
6610void
2f424b9b 6611qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6612{
6613 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6614 struct atio_from_isp *pkt;
6615 int cnt, i;
6616
ec7193e2 6617 if (!ha->flags.fw_started)
2d70c103
NB		 6618 return;
6619
5f35509d
QT		 6620 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6621 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6622 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6623 cnt = pkt->u.raw.entry_count;
6624
5f35509d
QT		 6625 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6626 /*
6627 * This packet is corrupted. The header + payload
6628 * can not be trusted. There is no point in passing
6629 * it further up.
6630 */
83548fe2 6631 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6632 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6633 pkt->u.isp24.fcp_hdr.s_id,
6634 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6635 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6636
6637 adjust_corrupted_atio(pkt);
82de802a
QT		 6638 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6639 ha_locked, 0);
5f35509d
QT		 6640 } else {
6641 qlt_24xx_atio_pkt_all_vps(vha,
6642 (struct atio_from_isp *)pkt, ha_locked);
6643 }
2d70c103
NB		 6644
6645 for (i = 0; i < cnt; i++) {
6646 ha->tgt.atio_ring_index++;
6647 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6648 ha->tgt.atio_ring_index = 0;
6649 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6650 } else
6651 ha->tgt.atio_ring_ptr++;
6652
6653 pkt->u.raw.signature = ATIO_PROCESSED;
6654 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6655 }
6656 wmb();
6657 }
6658
6659 /* Adjust ring index */
aa230bc5 6660 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6661}
6662
6663void
aa230bc5 6664qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6665{
6666 struct qla_hw_data *ha = vha->hw;
c9558869 6667 struct init_cb_24xx *icb;
aa230bc5
AE		 6668 if (!QLA_TGT_MODE_ENABLED())
6669 return;
2d70c103 6670
aa230bc5
AE		 6671 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6672 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6673 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6674
c9558869
HM		 6675 icb = (struct init_cb_24xx *)ha->init_cb;
6676
6677 if ((ql2xenablemsix != 0) && IS_ATIO_MSIX_CAPABLE(ha)) {
aa230bc5 6678 struct qla_msix_entry *msix = &ha->msix_entries[2];
aa230bc5
AE		 6679
6680 icb->msix_atio = cpu_to_le16(msix->entry);
6681 ql_dbg(ql_dbg_init, vha, 0xf072,
6682 "Registering ICB vector 0x%x for atio que.\n",
6683 msix->entry);
c9558869
HM		 6684 } else if (ql2xenablemsix == 0) {
6685 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
6686 ql_dbg(ql_dbg_init, vha, 0xf07f,
6687 "Registering INTx vector for ATIO.\n");
2d70c103
NB		 6688 }
6689}
6690
6691void
6692qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6693{
6694 struct qla_hw_data *ha = vha->hw;
ca3dad22 6695 u32 tmp;
99e1b683
QT		 6696
6697 if (!QLA_TGT_MODE_ENABLED())
6698 return;
2d70c103 6699
ead03855 6700 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6701 if (!ha->tgt.saved_set) {
6702 /* We save only once */
6703 ha->tgt.saved_exchange_count = nv->exchange_count;
6704 ha->tgt.saved_firmware_options_1 =
6705 nv->firmware_options_1;
6706 ha->tgt.saved_firmware_options_2 =
6707 nv->firmware_options_2;
6708 ha->tgt.saved_firmware_options_3 =
6709 nv->firmware_options_3;
6710 ha->tgt.saved_set = 1;
6711 }
6712
99e1b683 6713 if (qla_tgt_mode_enabled(vha))
ead03855 6714 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6715 else /* dual */
6716 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6717
6718 /* Enable target mode */
ad950360 6719 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6720
6721 /* Disable ini mode, if requested */
726b8548 6722 if (qla_tgt_mode_enabled(vha))
ad950360 6723 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6724
6725 /* Disable Full Login after LIP */
ad950360 6726 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6727 /* Enable initial LIP */
ad950360 6728 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6729 if (ql2xtgt_tape_enable)
6730 /* Enable FC Tape support */
6731 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6732 else
6733 /* Disable FC Tape support */
6734 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6735
2d70c103 6736 /* Disable Full Login after LIP */
ad950360 6737 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6738
6739 /*
6740 * clear BIT 15 explicitly as we have seen at least
6741 * a couple of instances where this was set and this
6742 * was causing the firmware to not be initialized.
6743 */
6744 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6745 /* Enable target PRLI control */
ad950360 6746 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
ca3dad22
QT		 6747
6748 if (IS_QLA25XX(ha)) {
6749 /* Change Loop-prefer to Pt-Pt */
6750 tmp = ~(BIT_4|BIT_5|BIT_6);
6751 nv->firmware_options_2 &= cpu_to_le32(tmp);
6752 tmp = P2P << 4;
6753 nv->firmware_options_2 |= cpu_to_le32(tmp);
6754 }
2d70c103
NB		 6755 } else {
6756 if (ha->tgt.saved_set) {
6757 nv->exchange_count = ha->tgt.saved_exchange_count;
6758 nv->firmware_options_1 =
6759 ha->tgt.saved_firmware_options_1;
6760 nv->firmware_options_2 =
6761 ha->tgt.saved_firmware_options_2;
6762 nv->firmware_options_3 =
6763 ha->tgt.saved_firmware_options_3;
6764 }
6765 return;
6766 }
6767
7c3f8fd1 6768 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6769 if (vha->flags.init_done)
6770 fc_host_supported_classes(vha->host) =
6771 FC_COS_CLASS2 | FC_COS_CLASS3;
6772
ad950360 6773 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6774 } else {
6775 if (vha->flags.init_done)
6776 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6777
ad950360 6778 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6779 }
6780}
6781
6782void
6783qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6784 struct init_cb_24xx *icb)
6785{
6786 struct qla_hw_data *ha = vha->hw;
6787
481ce733
QT		 6788 if (!QLA_TGT_MODE_ENABLED())
6789 return;
6790
2d70c103
NB		 6791 if (ha->tgt.node_name_set) {
6792 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6793 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6794 }
481ce733
QT		 6795
6796 /* disable ZIO at start time. */
6797 if (!vha->flags.init_done) {
6798 uint32_t tmp;
6799 tmp = le32_to_cpu(icb->firmware_options_2);
6800 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6801 icb->firmware_options_2 = cpu_to_le32(tmp);
6802 }
2d70c103
NB		 6803}
6804
aa230bc5
AE		 6805void
6806qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6807{
6808 struct qla_hw_data *ha = vha->hw;
ca3dad22 6809 u32 tmp;
aa230bc5
AE		 6810
6811 if (!QLA_TGT_MODE_ENABLED())
6812 return;
6813
ead03855 6814 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6815 if (!ha->tgt.saved_set) {
6816 /* We save only once */
6817 ha->tgt.saved_exchange_count = nv->exchange_count;
6818 ha->tgt.saved_firmware_options_1 =
6819 nv->firmware_options_1;
6820 ha->tgt.saved_firmware_options_2 =
6821 nv->firmware_options_2;
6822 ha->tgt.saved_firmware_options_3 =
6823 nv->firmware_options_3;
6824 ha->tgt.saved_set = 1;
6825 }
6826
99e1b683 6827 if (qla_tgt_mode_enabled(vha))
ead03855 6828 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6829 else /* dual */
6830 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6831
6832 /* Enable target mode */
ad950360 6833 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6834
6835 /* Disable ini mode, if requested */
726b8548 6836 if (qla_tgt_mode_enabled(vha))
ad950360 6837 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6838 /* Disable Full Login after LIP */
ad950360 6839 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6840 /* Enable initial LIP */
ad950360 6841 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6842 /*
6843 * clear BIT 15 explicitly as we have seen at
6844 * least a couple of instances where this was set
6845 * and this was causing the firmware to not be
6846 * initialized.
6847 */
6848 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6849 if (ql2xtgt_tape_enable)
6850 /* Enable FC tape support */
6851 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6852 else
6853 /* Disable FC tape support */
6854 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6855
aa230bc5 6856 /* Disable Full Login after LIP */
ad950360 6857 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6858 /* Enable target PRLI control */
ad950360 6859 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
ca3dad22
QT		 6860
6861 /* Change Loop-prefer to Pt-Pt */
6862 tmp = ~(BIT_4|BIT_5|BIT_6);
6863 nv->firmware_options_2 &= cpu_to_le32(tmp);
6864 tmp = P2P << 4;
6865 nv->firmware_options_2 |= cpu_to_le32(tmp);
aa230bc5
AE		 6866 } else {
6867 if (ha->tgt.saved_set) {
6868 nv->exchange_count = ha->tgt.saved_exchange_count;
6869 nv->firmware_options_1 =
6870 ha->tgt.saved_firmware_options_1;
6871 nv->firmware_options_2 =
6872 ha->tgt.saved_firmware_options_2;
6873 nv->firmware_options_3 =
6874 ha->tgt.saved_firmware_options_3;
6875 }
6876 return;
6877 }
6878
7c3f8fd1 6879 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 6880 if (vha->flags.init_done)
6881 fc_host_supported_classes(vha->host) =
6882 FC_COS_CLASS2 | FC_COS_CLASS3;
6883
ad950360 6884 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6885 } else {
6886 if (vha->flags.init_done)
6887 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6888
ad950360 6889 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6890 }
6891}
6892
6893void
6894qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6895 struct init_cb_81xx *icb)
6896{
6897 struct qla_hw_data *ha = vha->hw;
6898
6899 if (!QLA_TGT_MODE_ENABLED())
6900 return;
6901
6902 if (ha->tgt.node_name_set) {
6903 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6904 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6905 }
481ce733
QT		 6906
6907 /* disable ZIO at start time. */
6908 if (!vha->flags.init_done) {
6909 uint32_t tmp;
6910 tmp = le32_to_cpu(icb->firmware_options_2);
6911 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6912 icb->firmware_options_2 = cpu_to_le32(tmp);
6913 }
6914
aa230bc5
AE		 6915}
6916
6917void
6918qlt_83xx_iospace_config(struct qla_hw_data *ha)
6919{
6920 if (!QLA_TGT_MODE_ENABLED())
6921 return;
6922
6923 ha->msix_count += 1; /* For ATIO Q */
6924}
6925
2d70c103
NB		 6926
6927void
6928qlt_modify_vp_config(struct scsi_qla_host *vha,
6929 struct vp_config_entry_24xx *vpmod)
6930{
ead03855
QT		 6931 /* enable target mode. Bit5 = 1 => disable */
6932 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6933 vpmod->options_idx1 &= ~BIT_5;
726b8548 6934
ead03855 6935 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6936 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6937 vpmod->options_idx1 &= ~BIT_4;
6938}
6939
6940void
6941qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6942{
482c9dc7
QT		 6943 int rc;
6944
2d70c103
NB		 6945 if (!QLA_TGT_MODE_ENABLED())
6946 return;
6947
c9558869 6948 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6949 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6950 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6951 } else {
6952 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6953 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6954 }
6955
0e8cd71c
SK		 6956 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6957 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6958
6959 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6960 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6961 qlt_unknown_atio_work_fn);
6962
2d70c103 6963 qlt_clear_mode(base_vha);
482c9dc7
QT		 6964
6965 rc = btree_init32(&ha->tgt.host_map);
6966 if (rc)
83548fe2 6967 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6968 "Unable to initialize ha->host_map btree\n");
6969
6970 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6971}
6972
aa230bc5
AE		 6973irqreturn_t
6974qla83xx_msix_atio_q(int irq, void *dev_id)
6975{
6976 struct rsp_que *rsp;
6977 scsi_qla_host_t *vha;
6978 struct qla_hw_data *ha;
6979 unsigned long flags;
6980
6981 rsp = (struct rsp_que *) dev_id;
6982 ha = rsp->hw;
6983 vha = pci_get_drvdata(ha->pdev);
6984
2f424b9b 6985 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6986
2f424b9b 6987 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6988
2f424b9b 6989 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6990
6991 return IRQ_HANDLED;
6992}
6993
2f424b9b
QT		 6994static void
6995qlt_handle_abts_recv_work(struct work_struct *work)
6996{
6997 struct qla_tgt_sess_op *op = container_of(work,
6998 struct qla_tgt_sess_op, work);
6999 scsi_qla_host_t *vha = op->vha;
7000 struct qla_hw_data *ha = vha->hw;
7001 unsigned long flags;
7002
7c3f8fd1
QT		 7003 if (qla2x00_reset_active(vha) ||
7004 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 7005 return;
7006
7007 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7008 qlt_24xx_process_atio_queue(vha, 0);
7009 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7010
7011 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 7012 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 7013 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 7014
7015 kfree(op);
2f424b9b
QT		 7016}
7017
7018void
82de802a
QT		 7019qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7020 response_t *pkt)
2f424b9b
QT		 7021{
7022 struct qla_tgt_sess_op *op;
7023
7024 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7025
7026 if (!op) {
7027 /* do not reach for ATIO queue here. This is best effort err
7028 * recovery at this point.
7029 */
82de802a 7030 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 7031 return;
7032 }
7033
7034 memcpy(&op->atio, pkt, sizeof(*pkt));
7035 op->vha = vha;
7c3f8fd1 7036 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 7037 op->rsp = rsp;
2f424b9b
QT		 7038 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7039 queue_work(qla_tgt_wq, &op->work);
7040 return;
7041}
7042
2d70c103
NB		 7043int
7044qlt_mem_alloc(struct qla_hw_data *ha)
7045{
7046 if (!QLA_TGT_MODE_ENABLED())
7047 return 0;
7048
7049 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
7050 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
7051 if (!ha->tgt.tgt_vp_map)
7052 return -ENOMEM;
7053
7054 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7055 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7056 &ha->tgt.atio_dma, GFP_KERNEL);
7057 if (!ha->tgt.atio_ring) {
7058 kfree(ha->tgt.tgt_vp_map);
7059 return -ENOMEM;
7060 }
7061 return 0;
7062}
7063
7064void
7065qlt_mem_free(struct qla_hw_data *ha)
7066{
7067 if (!QLA_TGT_MODE_ENABLED())
7068 return;
7069
7070 if (ha->tgt.atio_ring) {
7071 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7072 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7073 ha->tgt.atio_dma);
7074 }
7075 kfree(ha->tgt.tgt_vp_map);
7076}
7077
7078/* vport_slock to be held by the caller */
7079void
7080qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7081{
482c9dc7
QT		 7082 void *slot;
7083 u32 key;
7084 int rc;
7085
2d70c103
NB		 7086 if (!QLA_TGT_MODE_ENABLED())
7087 return;
7088
482c9dc7
QT		 7089 key = vha->d_id.b24;
7090
2d70c103
NB		 7091 switch (cmd) {
7092 case SET_VP_IDX:
7093 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7094 break;
7095 case SET_AL_PA:
482c9dc7
QT		 7096 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7097 if (!slot) {
83548fe2 7098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7099 "Save vha in host_map %p %06x\n", vha, key);
7100 rc = btree_insert32(&vha->hw->tgt.host_map,
7101 key, vha, GFP_ATOMIC);
7102 if (rc)
83548fe2 7103 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7104 "Unable to insert s_id into host_map: %06x\n",
7105 key);
7106 return;
7107 }
83548fe2
QT		 7108 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7109 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7110 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7111 break;
7112 case RESET_VP_IDX:
7113 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7114 break;
7115 case RESET_AL_PA:
83548fe2 7116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7117 "clear vha in host_map %p %06x\n", vha, key);
7118 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7119 if (slot)
7120 btree_remove32(&vha->hw->tgt.host_map, key);
7121 vha->d_id.b24 = 0;
2d70c103
NB		 7122 break;
7123 }
7124}
7125
482c9dc7
QT		 7126void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7127{
7128 unsigned long flags;
7129 struct qla_hw_data *ha = vha->hw;
7130
7131 if (!vha->d_id.b24) {
7132 spin_lock_irqsave(&ha->vport_slock, flags);
7133 vha->d_id = id;
7134 qlt_update_vp_map(vha, SET_AL_PA);
7135 spin_unlock_irqrestore(&ha->vport_slock, flags);
7136 } else if (vha->d_id.b24 != id.b24) {
7137 spin_lock_irqsave(&ha->vport_slock, flags);
7138 qlt_update_vp_map(vha, RESET_AL_PA);
7139 vha->d_id = id;
7140 qlt_update_vp_map(vha, SET_AL_PA);
7141 spin_unlock_irqrestore(&ha->vport_slock, flags);
7142 }
7143}
7144
2d70c103
NB		 7145static int __init qlt_parse_ini_mode(void)
7146{
7147 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7148 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7149 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7150 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7151 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7152 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7153 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7154 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7155 else
7156 return false;
7157
7158 return true;
7159}
7160
7161int __init qlt_init(void)
7162{
7163 int ret;
7164
7165 if (!qlt_parse_ini_mode()) {
7166 ql_log(ql_log_fatal, NULL, 0xe06b,
7167 "qlt_parse_ini_mode() failed\n");
7168 return -EINVAL;
7169 }
7170
7171 if (!QLA_TGT_MODE_ENABLED())
7172 return 0;
7173
2d70c103
NB		 7174 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7175 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7176 qla_tgt_mgmt_cmd), 0, NULL);
7177 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7178 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7179 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7180 return -ENOMEM;
2d70c103
NB		 7181 }
7182
b7bd104e 7183 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7184 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7185 0, NULL);
b7bd104e
AP		 7186
7187 if (!qla_tgt_plogi_cachep) {
7188 ql_log(ql_log_fatal, NULL, 0xe06d,
7189 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7190 ret = -ENOMEM;
7191 goto out_mgmt_cmd_cachep;
7192 }
7193
2d70c103
NB		 7194 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7195 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7196 if (!qla_tgt_mgmt_cmd_mempool) {
7197 ql_log(ql_log_fatal, NULL, 0xe06e,
7198 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7199 ret = -ENOMEM;
b7bd104e 7200 goto out_plogi_cachep;
2d70c103
NB		 7201 }
7202
7203 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7204 if (!qla_tgt_wq) {
7205 ql_log(ql_log_fatal, NULL, 0xe06f,
7206 "alloc_workqueue for qla_tgt_wq failed\n");
7207 ret = -ENOMEM;
7208 goto out_cmd_mempool;
7209 }
7210 /*
7211 * Return 1 to signal that initiator-mode is being disabled
7212 */
7213 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7214
7215out_cmd_mempool:
7216 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7217out_plogi_cachep:
7218 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7219out_mgmt_cmd_cachep:
7220 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7221 return ret;
7222}
7223
7224void qlt_exit(void)
7225{
7226 if (!QLA_TGT_MODE_ENABLED())
7227 return;
7228
7229 destroy_workqueue(qla_tgt_wq);
7230 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7231 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7232 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7233}
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