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scsi: qla4xxx: Use dma_pool_zalloc()
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_target.c
CommitLineData
2d70c103
NB		 1/*
2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
3 *
4 * based on qla2x00t.c code:
5 *
6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
7 * Copyright (C) 2004 - 2005 Leonid Stoljar
8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
9 * Copyright (C) 2006 - 2010 ID7 Ltd.
10 *
11 * Forward port and refactoring to modern qla2xxx and target/configfs
12 *
4c76251e 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation, version 2
18 * of the License.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
2d70c103
NB		 29#include <linux/blkdev.h>
30#include <linux/interrupt.h>
31#include <linux/pci.h>
32#include <linux/delay.h>
33#include <linux/list.h>
34#include <linux/workqueue.h>
35#include <asm/unaligned.h>
36#include <scsi/scsi.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_tcq.h>
39#include <target/target_core_base.h>
40#include <target/target_core_fabric.h>
41
42#include "qla_def.h"
43#include "qla_target.h"
44
d154f350
AE		 45static int ql2xtgt_tape_enable;
46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xtgt_tape_enable,
48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
49
2d70c103
NB		 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
51module_param(qlini_mode, charp, S_IRUGO);
52MODULE_PARM_DESC(qlini_mode,
53 "Determines when initiator mode will be enabled. Possible values: "
54 "\"exclusive\" - initiator mode will be enabled on load, "
55 "disabled on enabling target mode and then on disabling target mode "
56 "enabled back; "
57 "\"disabled\" - initiator mode will never be enabled; "
ead03855
QT		 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
59 "when ready "
2d70c103
NB		 60 "\"enabled\" (default) - initiator mode will always stay enabled.");
61
99e1b683 62static int ql_dm_tgt_ex_pct = 0;
ead03855
QT		 63module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
64MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
65 "For Dual Mode (qlini_mode=dual), this parameter determines "
66 "the percentage of exchanges/cmds FW will allocate resources "
67 "for Target mode.");
68
09620eeb
QT		 69int ql2xuctrlirq = 1;
70module_param(ql2xuctrlirq, int, 0644);
71MODULE_PARM_DESC(ql2xuctrlirq,
72 "User to control IRQ placement via smp_affinity."
73 "Valid with qlini_mode=disabled."
74 "1(default): enable");
75
aa230bc5 76int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 77
7cf95f7e
QT		 78static int qla_sam_status = SAM_STAT_BUSY;
79static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
33e79977 80
2d70c103
NB		 81/*
82 * From scsi/fc/fc_fcp.h
83 */
84enum fcp_resp_rsp_codes {
85 FCP_TMF_CMPL = 0,
86 FCP_DATA_LEN_INVALID = 1,
87 FCP_CMND_FIELDS_INVALID = 2,
88 FCP_DATA_PARAM_MISMATCH = 3,
89 FCP_TMF_REJECTED = 4,
90 FCP_TMF_FAILED = 5,
91 FCP_TMF_INVALID_LUN = 9,
92};
93
94/*
95 * fc_pri_ta from scsi/fc/fc_fcp.h
96 */
97#define FCP_PTA_SIMPLE 0 /* simple task attribute */
98#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
99#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 100#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 101#define FCP_PTA_MASK 7 /* mask for task attribute field */
102#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
103#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
104
105/*
106 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
107 * must be called under HW lock and could unlock/lock it inside.
108 * It isn't an issue, since in the current implementation on the time when
109 * those functions are called:
110 *
111 * - Either context is IRQ and only IRQ handler can modify HW data,
112 * including rings related fields,
113 *
114 * - Or access to target mode variables from struct qla_tgt doesn't
115 * cross those functions boundaries, except tgt_stop, which
116 * additionally protected by irq_cmd_count.
117 */
118/* Predefs for callbacks handed to qla2xxx LLD */
119static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 120 struct atio_from_isp *pkt, uint8_t);
82de802a
QT		 121static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
122 response_t *pkt);
5d964837 123static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103 124 int fn, void *iocb, int flags);
82de802a 125static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
a07100e0 126 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
33e79977
QT		 127static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
128 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 129static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 130static void qlt_clear_tgt_db(struct qla_tgt *tgt);
82de802a 131static void qlt_send_notify_ack(struct qla_qpair *qpair,
a6ca8878
AP		 132 struct imm_ntfy_from_isp *ntfy,
133 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
134 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 135static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
136 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 137static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
138 fc_port_t *fcport, bool local);
139void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 140static void qlt_24xx_handle_abts(struct scsi_qla_host *,
141 struct abts_recv_from_24xx *);
82de802a
QT		 142static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
143 uint16_t);
8f6fc8d4 144
2d70c103
NB		 145/*
146 * Global Variables
147 */
2d70c103 148static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b5d15312 149struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 150static mempool_t *qla_tgt_mgmt_cmd_mempool;
151static struct workqueue_struct *qla_tgt_wq;
152static DEFINE_MUTEX(qla_tgt_mutex);
153static LIST_HEAD(qla_tgt_glist);
154
be25152c
QT		 155static const char *prot_op_str(u32 prot_op)
156{
157 switch (prot_op) {
158 case TARGET_PROT_NORMAL: return "NORMAL";
159 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
160 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
161 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
162 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
163 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
164 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
165 default: return "UNKNOWN";
166 }
167}
168
df673274
AP		 169/* This API intentionally takes dest as a parameter, rather than returning
170 * int value to avoid caller forgetting to issue wmb() after the store */
171void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
172{
173 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
174 *dest = atomic_inc_return(&base_vha->generation_tick);
175 /* memory barrier */
176 wmb();
177}
178
2d70c103
NB		 179/* Might release hw lock, then reaquire!! */
180static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
181{
182 /* Send marker if required */
183 if (unlikely(vha->marker_needed != 0)) {
184 int rc = qla2x00_issue_marker(vha, vha_locked);
185 if (rc != QLA_SUCCESS) {
186 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
187 "qla_target(%d): issue_marker() failed\n",
188 vha->vp_idx);
189 }
190 return rc;
191 }
192 return QLA_SUCCESS;
193}
194
195static inline
196struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
197 uint8_t *d_id)
198{
482c9dc7
QT		 199 struct scsi_qla_host *host;
200 uint32_t key = 0;
2d70c103 201
482c9dc7
QT		 202 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
203 (vha->d_id.b.al_pa == d_id[2]))
2d70c103
NB		 204 return vha;
205
482c9dc7
QT		 206 key = (uint32_t)d_id[0] << 16;
207 key |= (uint32_t)d_id[1] << 8;
208 key |= (uint32_t)d_id[2];
2d70c103 209
482c9dc7
QT		 210 host = btree_lookup32(&vha->hw->tgt.host_map, key);
211 if (!host)
604e2e57 212 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
83548fe2 213 "Unable to find host %06x\n", key);
482c9dc7
QT		 214
215 return host;
2d70c103
NB		 216}
217
218static inline
219struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
220 uint16_t vp_idx)
221{
222 struct qla_hw_data *ha = vha->hw;
223
224 if (vha->vp_idx == vp_idx)
225 return vha;
226
227 BUG_ON(ha->tgt.tgt_vp_map == NULL);
228 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
229 return ha->tgt.tgt_vp_map[vp_idx].vha;
230
231 return NULL;
232}
233
33e79977
QT		 234static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
235{
236 unsigned long flags;
237
238 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
239
240 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 241 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
242 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 243 vha->hw->tgt.num_pend_cmds;
244 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
245}
246static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
247{
248 unsigned long flags;
249
250 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
251 vha->hw->tgt.num_pend_cmds--;
252 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
253}
254
41dc529a
QT		 255
256static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
82de802a 257 struct atio_from_isp *atio, uint8_t ha_locked)
41dc529a
QT		 258{
259 struct qla_tgt_sess_op *u;
260 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
261 unsigned long flags;
262
263 if (tgt->tgt_stop) {
83548fe2
QT		 264 ql_dbg(ql_dbg_async, vha, 0x502c,
265 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
266 vha->vp_idx);
41dc529a
QT		 267 goto out_term;
268 }
269
270 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 271 if (u == NULL)
41dc529a 272 goto out_term;
41dc529a
QT		 273
274 u->vha = vha;
275 memcpy(&u->atio, atio, sizeof(*atio));
276 INIT_LIST_HEAD(&u->cmd_list);
277
278 spin_lock_irqsave(&vha->cmd_list_lock, flags);
279 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
280 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
281
282 schedule_delayed_work(&vha->unknown_atio_work, 1);
283
284out:
285 return;
286
287out_term:
82de802a 288 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
41dc529a
QT		 289 goto out;
290}
291
292static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
293 uint8_t ha_locked)
294{
295 struct qla_tgt_sess_op *u, *t;
296 scsi_qla_host_t *host;
297 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
298 unsigned long flags;
299 uint8_t queued = 0;
300
301 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
302 if (u->aborted) {
83548fe2
QT		 303 ql_dbg(ql_dbg_async, vha, 0x502e,
304 "Freeing unknown %s %p, because of Abort\n",
41dc529a 305 "ATIO_TYPE7", u);
82de802a
QT		 306 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
307 &u->atio, ha_locked, 0);
41dc529a
QT		 308 goto abort;
309 }
310
311 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
312 if (host != NULL) {
604e2e57 313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
83548fe2 314 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 315 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
316 } else if (tgt->tgt_stop) {
604e2e57 317 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
83548fe2
QT		 318 "Freeing unknown %s %p, because tgt is being stopped\n",
319 "ATIO_TYPE7", u);
82de802a
QT		 320 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
321 &u->atio, ha_locked, 0);
41dc529a 322 } else {
604e2e57 323 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
83548fe2 324 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 325 if (!queued) {
326 queued = 1;
327 schedule_delayed_work(&vha->unknown_atio_work,
328 1);
329 }
330 continue;
331 }
332
333abort:
334 spin_lock_irqsave(&vha->cmd_list_lock, flags);
335 list_del(&u->cmd_list);
336 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
337 kfree(u);
338 }
339}
340
341void qlt_unknown_atio_work_fn(struct work_struct *work)
342{
343 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
344 struct scsi_qla_host, unknown_atio_work);
345
346 qlt_try_to_dequeue_unknown_atios(vha, 0);
347}
348
3bb67df5 349static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 350 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 351{
f83adb61
QT		 352 ql_dbg(ql_dbg_tgt, vha, 0xe072,
353 "%s: qla_target(%d): type %x ox_id %04x\n",
354 __func__, vha->vp_idx, atio->u.raw.entry_type,
355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
356
2d70c103
NB		 357 switch (atio->u.raw.entry_type) {
358 case ATIO_TYPE7:
359 {
360 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
361 atio->u.isp24.fcp_hdr.d_id);
362 if (unlikely(NULL == host)) {
363 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
364 "qla_target(%d): Received ATIO_TYPE7 "
365 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
366 atio->u.isp24.fcp_hdr.d_id[0],
367 atio->u.isp24.fcp_hdr.d_id[1],
368 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 369
370
371 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 372 break;
373 }
41dc529a
QT		 374 if (unlikely(!list_empty(&vha->unknown_atio_list)))
375 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
376
2f424b9b 377 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 378 break;
379 }
380
381 case IMMED_NOTIFY_TYPE:
382 {
383 struct scsi_qla_host *host = vha;
384 struct imm_ntfy_from_isp *entry =
385 (struct imm_ntfy_from_isp *)atio;
386
82de802a
QT		 387 qlt_issue_marker(vha, ha_locked);
388
2d70c103
NB		 389 if ((entry->u.isp24.vp_index != 0xFF) &&
390 (entry->u.isp24.nport_handle != 0xFFFF)) {
391 host = qlt_find_host_by_vp_idx(vha,
392 entry->u.isp24.vp_index);
393 if (unlikely(!host)) {
394 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
395 "qla_target(%d): Received "
396 "ATIO (IMMED_NOTIFY_TYPE) "
397 "with unknown vp_index %d\n",
398 vha->vp_idx, entry->u.isp24.vp_index);
399 break;
400 }
401 }
2f424b9b 402 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 403 break;
404 }
405
41dc529a
QT		 406 case VP_RPT_ID_IOCB_TYPE:
407 qla24xx_report_id_acquisition(vha,
408 (struct vp_rpt_id_entry_24xx *)atio);
409 break;
410
411 case ABTS_RECV_24XX:
412 {
413 struct abts_recv_from_24xx *entry =
414 (struct abts_recv_from_24xx *)atio;
415 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
416 entry->vp_index);
8f6fc8d4
QT		 417 unsigned long flags;
418
41dc529a 419 if (unlikely(!host)) {
83548fe2 420 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 421 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
422 "received, with unknown vp_index %d\n",
423 vha->vp_idx, entry->vp_index);
424 break;
425 }
8f6fc8d4
QT		 426 if (!ha_locked)
427 spin_lock_irqsave(&host->hw->hardware_lock, flags);
428 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
429 if (!ha_locked)
430 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 431 break;
41dc529a
QT		 432 }
433
434 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
435
2d70c103
NB		 436 default:
437 ql_dbg(ql_dbg_tgt, vha, 0xe040,
438 "qla_target(%d): Received unknown ATIO atio "
439 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
440 break;
441 }
442
3bb67df5 443 return false;
2d70c103
NB		 444}
445
82de802a
QT		 446void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
447 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 448{
449 switch (pkt->entry_type) {
f83adb61
QT		 450 case CTIO_CRC2:
451 ql_dbg(ql_dbg_tgt, vha, 0xe073,
452 "qla_target(%d):%s: CRC2 Response pkt\n",
453 vha->vp_idx, __func__);
81881861 454 /* fall through */
2d70c103
NB		 455 case CTIO_TYPE7:
456 {
457 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
458 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
459 entry->vp_index);
460 if (unlikely(!host)) {
461 ql_dbg(ql_dbg_tgt, vha, 0xe041,
462 "qla_target(%d): Response pkt (CTIO_TYPE7) "
463 "received, with unknown vp_index %d\n",
464 vha->vp_idx, entry->vp_index);
465 break;
466 }
82de802a 467 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 468 break;
469 }
470
471 case IMMED_NOTIFY_TYPE:
472 {
473 struct scsi_qla_host *host = vha;
474 struct imm_ntfy_from_isp *entry =
475 (struct imm_ntfy_from_isp *)pkt;
476
477 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
478 if (unlikely(!host)) {
479 ql_dbg(ql_dbg_tgt, vha, 0xe042,
480 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
481 "received, with unknown vp_index %d\n",
482 vha->vp_idx, entry->u.isp24.vp_index);
483 break;
484 }
82de802a 485 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 486 break;
487 }
488
489 case NOTIFY_ACK_TYPE:
490 {
491 struct scsi_qla_host *host = vha;
492 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
493
494 if (0xFF != entry->u.isp24.vp_index) {
495 host = qlt_find_host_by_vp_idx(vha,
496 entry->u.isp24.vp_index);
497 if (unlikely(!host)) {
498 ql_dbg(ql_dbg_tgt, vha, 0xe043,
499 "qla_target(%d): Response "
500 "pkt (NOTIFY_ACK_TYPE) "
501 "received, with unknown "
502 "vp_index %d\n", vha->vp_idx,
503 entry->u.isp24.vp_index);
504 break;
505 }
506 }
82de802a 507 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 508 break;
509 }
510
511 case ABTS_RECV_24XX:
512 {
513 struct abts_recv_from_24xx *entry =
514 (struct abts_recv_from_24xx *)pkt;
515 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
516 entry->vp_index);
517 if (unlikely(!host)) {
518 ql_dbg(ql_dbg_tgt, vha, 0xe044,
519 "qla_target(%d): Response pkt "
520 "(ABTS_RECV_24XX) received, with unknown "
521 "vp_index %d\n", vha->vp_idx, entry->vp_index);
522 break;
523 }
82de802a 524 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 525 break;
526 }
527
528 case ABTS_RESP_24XX:
529 {
530 struct abts_resp_to_24xx *entry =
531 (struct abts_resp_to_24xx *)pkt;
532 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
533 entry->vp_index);
534 if (unlikely(!host)) {
535 ql_dbg(ql_dbg_tgt, vha, 0xe045,
536 "qla_target(%d): Response pkt "
537 "(ABTS_RECV_24XX) received, with unknown "
538 "vp_index %d\n", vha->vp_idx, entry->vp_index);
539 break;
540 }
82de802a 541 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 542 break;
543 }
544
545 default:
82de802a 546 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 547 break;
548 }
549
550}
551
b7bd104e
AP		 552/*
553 * All qlt_plogi_ack_t operations are protected by hardware_lock
554 */
726b8548
QT		 555static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
556 struct imm_ntfy_from_isp *ntfy, int type)
557{
558 struct qla_work_evt *e;
559 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
560 if (!e)
561 return QLA_FUNCTION_FAILED;
562
563 e->u.nack.fcport = fcport;
564 e->u.nack.type = type;
565 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
566 return qla2x00_post_work(vha, e);
567}
568
569static
25ff6af1 570void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 571{
726b8548 572 struct srb *sp = (struct srb *)s;
25ff6af1 573 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 574 unsigned long flags;
575
83548fe2
QT		 576 ql_dbg(ql_dbg_disc, vha, 0x20f2,
577 "Async done-%s res %x %8phC type %d\n",
578 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 579
580 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
581 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 582 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 583
584 switch (sp->type) {
585 case SRB_NACK_PLOGI:
586 sp->fcport->login_gen++;
587 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
588 sp->fcport->logout_on_delete = 1;
5b33469a 589 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
3515832c 590 sp->fcport->send_els_logo = 0;
726b8548
QT		 591 break;
592
593 case SRB_NACK_PRLI:
594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
595 sp->fcport->deleted = 0;
3515832c 596 sp->fcport->send_els_logo = 0;
726b8548
QT		 597
598 if (!sp->fcport->login_succ &&
599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
600 sp->fcport->login_succ = 1;
601
602 vha->fcport_count++;
603
604 if (!IS_IIDMA_CAPABLE(vha->hw) ||
605 !vha->hw->flags.gpsc_supported) {
83548fe2
QT		 606 ql_dbg(ql_dbg_disc, vha, 0x20f3,
607 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
608 __func__, __LINE__,
609 sp->fcport->port_name,
610 vha->fcport_count);
9cd883f0 611 sp->fcport->disc_state = DSC_UPD_FCPORT;
726b8548
QT		 612 qla24xx_post_upd_fcport_work(vha, sp->fcport);
613 } else {
83548fe2
QT		 614 ql_dbg(ql_dbg_disc, vha, 0x20f5,
615 "%s %d %8phC post gpsc fcp_cnt %d\n",
616 __func__, __LINE__,
617 sp->fcport->port_name,
618 vha->fcport_count);
726b8548
QT		 619
620 qla24xx_post_gpsc_work(vha, sp->fcport);
621 }
622 }
623 break;
624
625 case SRB_NACK_LOGO:
626 sp->fcport->login_gen++;
627 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
628 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
629 break;
630 }
631 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
632
25ff6af1 633 sp->free(sp);
726b8548
QT		 634}
635
636int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
637 struct imm_ntfy_from_isp *ntfy, int type)
638{
639 int rval = QLA_FUNCTION_FAILED;
640 srb_t *sp;
641 char *c = NULL;
642
643 fcport->flags |= FCF_ASYNC_SENT;
644 switch (type) {
645 case SRB_NACK_PLOGI:
646 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
647 c = "PLOGI";
648 break;
649 case SRB_NACK_PRLI:
650 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 651 fcport->deleted = 0;
726b8548
QT		 652 c = "PRLI";
653 break;
654 case SRB_NACK_LOGO:
655 fcport->fw_login_state = DSC_LS_LOGO_PEND;
656 c = "LOGO";
657 break;
658 }
659
660 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
661 if (!sp)
662 goto done;
663
664 sp->type = type;
665 sp->name = "nack";
666
667 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
668
669 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
2e01d0ba 670 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 671 sp->done = qla2x00_async_nack_sp_done;
672
673 rval = qla2x00_start_sp(sp);
674 if (rval != QLA_SUCCESS)
675 goto done_free_sp;
676
83548fe2
QT		 677 ql_dbg(ql_dbg_disc, vha, 0x20f4,
678 "Async-%s %8phC hndl %x %s\n",
679 sp->name, fcport->port_name, sp->handle, c);
726b8548
QT		 680
681 return rval;
682
683done_free_sp:
25ff6af1 684 sp->free(sp);
726b8548
QT		 685done:
686 fcport->flags &= ~FCF_ASYNC_SENT;
687 return rval;
688}
689
690void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
691{
692 fc_port_t *t;
693 unsigned long flags;
694
695 switch (e->u.nack.type) {
696 case SRB_NACK_PRLI:
697 mutex_lock(&vha->vha_tgt.tgt_mutex);
698 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
699 mutex_unlock(&vha->vha_tgt.tgt_mutex);
700 if (t) {
83548fe2 701 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 702 "%s create sess success %p", __func__, t);
703 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
704 /* create sess has an extra kref */
705 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
706 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
707 }
708 break;
709 }
710 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
711 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type);
712}
713
714void qla24xx_delete_sess_fn(struct work_struct *work)
715{
716 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
717 struct qla_hw_data *ha = fcport->vha->hw;
718 unsigned long flags;
719
720 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
721
722 if (fcport->se_sess) {
723 ha->tgt.tgt_ops->shutdown_sess(fcport);
724 ha->tgt.tgt_ops->put_sess(fcport);
725 } else {
726 qlt_unreg_sess(fcport);
727 }
728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
729}
730
731/*
732 * Called from qla2x00_reg_remote_port()
733 */
734void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
735{
736 struct qla_hw_data *ha = vha->hw;
737 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
738 struct fc_port *sess = fcport;
739 unsigned long flags;
740
741 if (!vha->hw->tgt.tgt_ops)
742 return;
743
744 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
745 if (tgt->tgt_stop) {
746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
747 return;
748 }
749
750 if (fcport->disc_state == DSC_DELETE_PEND) {
751 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
752 return;
753 }
754
755 if (!sess->se_sess) {
756 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
757
758 mutex_lock(&vha->vha_tgt.tgt_mutex);
759 sess = qlt_create_sess(vha, fcport, false);
760 mutex_unlock(&vha->vha_tgt.tgt_mutex);
761
762 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
763 } else {
764 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
765 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
766 return;
767 }
768
769 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 770 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 771 "%s: kref_get fail sess %8phC \n",
772 __func__, sess->port_name);
773 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
774 return;
775 }
776
777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
778 "qla_target(%u): %ssession for port %8phC "
779 "(loop ID %d) reappeared\n", vha->vp_idx,
780 sess->local ? "local " : "", sess->port_name, sess->loop_id);
781
782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
783 "Reappeared sess %p\n", sess);
784
785 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
786 fcport->loop_id,
787 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
788 }
789
790 if (sess && sess->local) {
791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
792 "qla_target(%u): local session for "
793 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
794 fcport->port_name, sess->loop_id);
795 sess->local = 0;
796 }
797 ha->tgt.tgt_ops->put_sess(sess);
798 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
799}
b7bd104e
AP		 800
801/*
802 * This is a zero-base ref-counting solution, since hardware_lock
803 * guarantees that ref_count is not modified concurrently.
804 * Upon successful return content of iocb is undefined
805 */
5d964837 806static struct qlt_plogi_ack_t *
b7bd104e
AP		 807qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
808 struct imm_ntfy_from_isp *iocb)
809{
5d964837 810 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 811
812 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
813 if (pla->id.b24 == id->b24) {
814 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 815 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 816 return pla;
817 }
818 }
819
820 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
821 if (!pla) {
822 ql_dbg(ql_dbg_async, vha, 0x5088,
823 "qla_target(%d): Allocation of plogi_ack failed\n",
824 vha->vp_idx);
825 return NULL;
826 }
827
5d964837 828 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 829 pla->id = *id;
830 list_add_tail(&pla->list, &vha->plogi_ack_list);
831
832 return pla;
833}
834
726b8548 835void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 836 struct qlt_plogi_ack_t *pla)
b7bd104e 837{
5d964837 838 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 839 port_id_t port_id;
840 uint16_t loop_id;
841 fc_port_t *fcport = pla->fcport;
842
b7bd104e
AP		 843 BUG_ON(!pla->ref_count);
844 pla->ref_count--;
845
846 if (pla->ref_count)
847 return;
848
726b8548 849 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 850 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 851 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
852 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
853 iocb->u.isp24.port_id[0],
854 le16_to_cpu(iocb->u.isp24.nport_handle),
855 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 856
857 port_id.b.domain = iocb->u.isp24.port_id[2];
858 port_id.b.area = iocb->u.isp24.port_id[1];
859 port_id.b.al_pa = iocb->u.isp24.port_id[0];
860 port_id.b.rsvd_1 = 0;
861
862 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
863
864 fcport->loop_id = loop_id;
865 fcport->d_id = port_id;
9cd883f0
QT		 866 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
867 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
868 else
869 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
726b8548
QT		 870
871 list_for_each_entry(fcport, &vha->vp_fcports, list) {
872 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
873 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
874 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
875 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
876 }
b7bd104e
AP		 877
878 list_del(&pla->list);
879 kmem_cache_free(qla_tgt_plogi_cachep, pla);
880}
881
726b8548 882void
5d964837
QT		 883qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
884 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 885{
5d964837 886 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 887 /* Inc ref_count first because link might already be pointing at pla */
888 pla->ref_count++;
889
726b8548
QT		 890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
891 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
892 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
893 sess, link, sess->port_name,
894 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
895 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
896 pla->ref_count, pla, link);
897
5ef696aa
QT		 898 if (link == QLT_PLOGI_LINK_CONFLICT) {
899 switch (sess->disc_state) {
900 case DSC_DELETED:
901 case DSC_DELETE_PEND:
902 pla->ref_count--;
903 return;
904 default:
905 break;
906 }
907 }
908
b7bd104e
AP		 909 if (sess->plogi_link[link])
910 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
911
726b8548
QT		 912 if (link == QLT_PLOGI_LINK_SAME_WWN)
913 pla->fcport = sess;
b7bd104e
AP		 914
915 sess->plogi_link[link] = pla;
916}
917
71cdc079
AP		 918typedef struct {
919 /* These fields must be initialized by the caller */
920 port_id_t id;
921 /*
922 * number of cmds dropped while we were waiting for
923 * initiator to ack LOGO initialize to 1 if LOGO is
924 * triggered by a command, otherwise, to 0
925 */
926 int cmd_count;
927
928 /* These fields are used by callee */
929 struct list_head list;
930} qlt_port_logo_t;
931
932static void
933qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
934{
935 qlt_port_logo_t *tmp;
936 int res;
937
938 mutex_lock(&vha->vha_tgt.tgt_mutex);
939
940 list_for_each_entry(tmp, &vha->logo_list, list) {
941 if (tmp->id.b24 == logo->id.b24) {
942 tmp->cmd_count += logo->cmd_count;
943 mutex_unlock(&vha->vha_tgt.tgt_mutex);
944 return;
945 }
946 }
947
948 list_add_tail(&logo->list, &vha->logo_list);
949
950 mutex_unlock(&vha->vha_tgt.tgt_mutex);
951
952 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
953
954 mutex_lock(&vha->vha_tgt.tgt_mutex);
955 list_del(&logo->list);
956 mutex_unlock(&vha->vha_tgt.tgt_mutex);
957
b7bd104e
AP		 958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
959 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
960 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
961 logo->cmd_count, res);
71cdc079
AP		 962}
963
2d70c103
NB		 964static void qlt_free_session_done(struct work_struct *work)
965{
5d964837 966 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 967 free_work);
968 struct qla_tgt *tgt = sess->tgt;
969 struct scsi_qla_host *vha = sess->vha;
970 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 971 unsigned long flags;
972 bool logout_started = false;
41dc529a 973 scsi_qla_host_t *base_vha;
9cd883f0
QT		 974 struct qlt_plogi_ack_t *own =
975 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
a6ca8878
AP		 976
977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
978 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 979 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 980 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 981 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 982 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 983 sess->send_els_logo);
2d70c103 984
726b8548 985 if (!IS_SW_RESV_ADDR(sess->d_id)) {
41dc529a
QT		 986 if (sess->send_els_logo) {
987 qlt_port_logo_t logo;
71cdc079 988
41dc529a
QT		 989 logo.id = sess->d_id;
990 logo.cmd_count = 0;
a2390348 991 sess->send_els_logo = 0;
41dc529a
QT		 992 qlt_send_first_logo(vha, &logo);
993 }
994
ba743f91 995 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 996 int rc;
997
9cd883f0
QT		 998 if (!own ||
999 (own &&
1000 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
1001 rc = qla2x00_post_async_logout_work(vha, sess,
1002 NULL);
1003 if (rc != QLA_SUCCESS)
1004 ql_log(ql_log_warn, vha, 0xf085,
1005 "Schedule logo failed sess %p rc %d\n",
1006 sess, rc);
1007 else
1008 logout_started = true;
1009 } else if (own && (own->iocb.u.isp24.status_subcode ==
1010 ELS_PRLI) && ha->flags.rida_fmt2) {
1011 rc = qla2x00_post_async_prlo_work(vha, sess,
1012 NULL);
1013 if (rc != QLA_SUCCESS)
1014 ql_log(ql_log_warn, vha, 0xf085,
1015 "Schedule PRLO failed sess %p rc %d\n",
1016 sess, rc);
1017 else
1018 logout_started = true;
1019 }
41dc529a 1020 }
726b8548 1021 }
a6ca8878 1022
2d70c103
NB		 1023 /*
1024 * Release the target session for FC Nexus from fabric module code.
1025 */
1026 if (sess->se_sess != NULL)
1027 ha->tgt.tgt_ops->free_session(sess);
1028
a6ca8878
AP		 1029 if (logout_started) {
1030 bool traced = false;
1031
6aa7de05 1032 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878
AP		 1033 if (!traced) {
1034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1035 "%s: waiting for sess %p logout\n",
1036 __func__, sess);
1037 traced = true;
1038 }
1039 msleep(100);
1040 }
1041
726b8548 1042 ql_dbg(ql_dbg_disc, vha, 0xf087,
9cd883f0 1043 "%s: sess %p logout completed\n", __func__, sess);
41dc529a
QT		 1044 }
1045
1046 if (sess->logo_ack_needed) {
1047 sess->logo_ack_needed = 0;
1048 qla24xx_async_notify_ack(vha, sess,
1049 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1050 }
1051
726b8548
QT		 1052 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1053 if (sess->se_sess) {
1054 sess->se_sess = NULL;
1055 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1056 tgt->sess_count--;
1057 }
1058
1059 sess->disc_state = DSC_DELETED;
1060 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1061 sess->deleted = QLA_SESS_DELETED;
1062 sess->login_retry = vha->hw->login_retry_count;
1063
1064 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1065 vha->fcport_count--;
1066 sess->login_succ = 0;
1067 }
1068
ba743f91 1069 qla2x00_clear_loop_id(sess);
726b8548
QT		 1070
1071 if (sess->conflict) {
1072 sess->conflict->login_pause = 0;
1073 sess->conflict = NULL;
1074 if (!test_bit(UNLOADING, &vha->dpc_flags))
1075 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1076 }
1077
b7bd104e 1078 {
5d964837 1079 struct qlt_plogi_ack_t *con =
b7bd104e 1080 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1081 struct imm_ntfy_from_isp *iocb;
b7bd104e
AP		 1082
1083 if (con) {
5d964837 1084 iocb = &con->iocb;
b7bd104e 1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1086 "se_sess %p / sess %p port %8phC is gone,"
1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1088 sess->se_sess, sess, sess->port_name,
1089 own ? "releasing own PLOGI" : "no own PLOGI pending",
1090 own ? own->ref_count : -1,
1091 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1092 qlt_plogi_ack_unref(vha, con);
726b8548 1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1094 } else {
1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1097 sess->se_sess, sess, sess->port_name,
1098 own ? "releasing own PLOGI" :
1099 "no own PLOGI pending",
1100 own ? own->ref_count : -1);
1101 }
1102
726b8548
QT		 1103 if (own) {
1104 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1105 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1107 }
b7bd104e 1108 }
1ae634eb 1109
5d964837
QT		 1110 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1111
2d70c103 1112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1113 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1114 sess, sess->port_name, vha->fcport_count);
2d70c103 1115
726b8548 1116 if (tgt && (tgt->sess_count == 0))
2d70c103 1117 wake_up_all(&tgt->waitQ);
726b8548
QT		 1118
1119 if (vha->fcport_count == 0)
1120 wake_up_all(&vha->fcport_waitQ);
1121
41dc529a 1122 base_vha = pci_get_drvdata(ha->pdev);
1ae634eb
QT		 1123
1124 sess->free_pending = 0;
1125
41dc529a
QT		 1126 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1127 return;
1128
a4239945
QT		 1129 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1130 switch (vha->host->active_mode) {
1131 case MODE_INITIATOR:
1132 case MODE_DUAL:
1133 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1134 qla2xxx_wake_dpc(vha);
1135 break;
1136 case MODE_TARGET:
1137 default:
1138 /* no-op */
1139 break;
1140 }
726b8548 1141 }
2d70c103
NB		 1142}
1143
7560151b 1144/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1145void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1146{
1147 struct scsi_qla_host *vha = sess->vha;
1ae634eb 1148 unsigned long flags;
2d70c103 1149
83548fe2 1150 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1151 "%s sess %p for deletion %8phC\n",
1152 __func__, sess, sess->port_name);
1153
1ae634eb
QT		 1154 spin_lock_irqsave(&sess->vha->work_lock, flags);
1155 if (sess->free_pending) {
1156 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1157 return;
1158 }
1159 sess->free_pending = 1;
1160 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1161
36c78452
QT		 1162 if (sess->se_sess)
1163 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1164
5d964837
QT		 1165 qla2x00_mark_device_lost(vha, sess, 1, 1);
1166
a6ca8878 1167 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1168 sess->disc_state = DSC_DELETE_PEND;
1169 sess->last_rscn_gen = sess->rscn_gen;
1170 sess->last_login_gen = sess->login_gen;
2d70c103 1171
a5d42f4c
DG		 1172 if (sess->nvme_flag & NVME_FLAG_REGISTERED)
1173 schedule_work(&sess->nvme_del_work);
1174
2d70c103
NB		 1175 INIT_WORK(&sess->free_work, qlt_free_session_done);
1176 schedule_work(&sess->free_work);
1177}
5d964837 1178EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1179
2d70c103
NB		 1180static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1181{
1182 struct qla_hw_data *ha = vha->hw;
5d964837 1183 struct fc_port *sess = NULL;
2d70c103
NB		 1184 uint16_t loop_id;
1185 int res = 0;
1186 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1187 unsigned long flags;
2d70c103
NB		 1188
1189 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1190 if (loop_id == 0xFFFF) {
2d70c103 1191 /* Global event */
b2032fd5 1192 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1193 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1194 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1195 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1196 } else {
7560151b 1197 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1198 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1200 }
1201
1202 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1203 "Using sess for qla_tgt_reset: %p\n", sess);
1204 if (!sess) {
1205 res = -ESRCH;
1206 return res;
1207 }
1208
1209 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1210 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1211 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1212 mcmd, loop_id);
1213
bb1181c9 1214 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1215}
1216
726b8548
QT		 1217static void qla24xx_chk_fcp_state(struct fc_port *sess)
1218{
7c3f8fd1 1219 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1220 sess->logout_on_delete = 0;
1221 sess->logo_ack_needed = 0;
1222 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1223 sess->scan_state = 0;
1224 }
1225}
1226
7560151b 1227/* ha->tgt.sess_lock supposed to be held on entry */
94cff6e1 1228void qlt_schedule_sess_for_deletion(struct fc_port *sess)
2d70c103
NB		 1229{
1230 struct qla_tgt *tgt = sess->tgt;
d8630bb9 1231 unsigned long flags;
2d70c103 1232
726b8548
QT		 1233 if (sess->disc_state == DSC_DELETE_PEND)
1234 return;
1235
1236 if (sess->disc_state == DSC_DELETED) {
1237 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1238 wake_up_all(&tgt->waitQ);
1239 if (sess->vha->fcport_count == 0)
1240 wake_up_all(&sess->vha->fcport_waitQ);
1241
1242 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1243 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878
AP		 1244 return;
1245 }
2d70c103 1246
726b8548
QT		 1247 if (sess->deleted == QLA_SESS_DELETED)
1248 sess->logout_on_delete = 0;
1249
d8630bb9
QT		 1250 spin_lock_irqsave(&sess->vha->work_lock, flags);
1251 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
1252 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1253 return;
1254 }
726b8548 1255 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
d8630bb9
QT		 1256 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1257
1258 sess->disc_state = DSC_DELETE_PEND;
1259
726b8548 1260 qla24xx_chk_fcp_state(sess);
2d70c103 1261
726b8548
QT		 1262 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
1263 "Scheduling sess %p for deletion\n", sess);
2d70c103 1264
9cd883f0
QT		 1265 /* use cancel to push work element through before re-queue */
1266 cancel_work_sync(&sess->del_work);
a01c77d2
QT		 1267 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1268 queue_work(sess->vha->hw->wq, &sess->del_work);
726b8548 1269}
2d70c103 1270
7560151b 1271/* ha->tgt.sess_lock supposed to be held on entry */
c5701042 1272static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1273{
5d964837
QT		 1274 struct fc_port *sess;
1275 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1276
5d964837
QT		 1277 list_for_each_entry(sess, &vha->vp_fcports, list) {
1278 if (sess->se_sess)
94cff6e1 1279 qlt_schedule_sess_for_deletion(sess);
5d964837 1280 }
2d70c103
NB		 1281
1282 /* At this point tgt could be already dead */
1283}
1284
1285static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1286 uint16_t *loop_id)
1287{
1288 struct qla_hw_data *ha = vha->hw;
1289 dma_addr_t gid_list_dma;
1290 struct gid_list_info *gid_list;
1291 char *id_iter;
1292 int res, rc, i;
1293 uint16_t entries;
1294
1295 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1296 &gid_list_dma, GFP_KERNEL);
1297 if (!gid_list) {
1298 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1299 "qla_target(%d): DMA Alloc failed of %u\n",
1300 vha->vp_idx, qla2x00_gid_list_size(ha));
1301 return -ENOMEM;
1302 }
1303
1304 /* Get list of logged in devices */
15f30a57 1305 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1306 if (rc != QLA_SUCCESS) {
1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1308 "qla_target(%d): get_id_list() failed: %x\n",
1309 vha->vp_idx, rc);
71cdc079 1310 res = -EBUSY;
2d70c103
NB		 1311 goto out_free_id_list;
1312 }
1313
1314 id_iter = (char *)gid_list;
71cdc079 1315 res = -ENOENT;
2d70c103
NB		 1316 for (i = 0; i < entries; i++) {
1317 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
1318 if ((gid->al_pa == s_id[2]) &&
1319 (gid->area == s_id[1]) &&
1320 (gid->domain == s_id[0])) {
1321 *loop_id = le16_to_cpu(gid->loop_id);
1322 res = 0;
1323 break;
1324 }
1325 id_iter += ha->gid_list_info_size;
1326 }
1327
1328out_free_id_list:
1329 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1330 gid_list, gid_list_dma);
1331 return res;
1332}
1333
2d70c103
NB		 1334/*
1335 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1336 * Caller must put it.
1337 */
5d964837 1338static struct fc_port *qlt_create_sess(
2d70c103
NB		 1339 struct scsi_qla_host *vha,
1340 fc_port_t *fcport,
1341 bool local)
1342{
1343 struct qla_hw_data *ha = vha->hw;
726b8548 1344 struct fc_port *sess = fcport;
2d70c103 1345 unsigned long flags;
2d70c103 1346
726b8548
QT		 1347 if (vha->vha_tgt.qla_tgt->tgt_stop)
1348 return NULL;
2d70c103 1349
726b8548
QT		 1350 if (fcport->se_sess) {
1351 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1352 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1353 "%s: kref_get_unless_zero failed for %8phC\n",
1354 __func__, sess->port_name);
1355 return NULL;
2d70c103 1356 }
726b8548 1357 return fcport;
2d70c103 1358 }
0e8cd71c 1359 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1360 sess->local = local;
a6ca8878 1361
726b8548
QT		 1362 /*
1363 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1364 * session eventually ends and release corresponding nport handle.
1365 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1366 * code will adjust these flags as necessary.
1367 */
a6ca8878
AP		 1368 sess->logout_on_delete = 1;
1369 sess->keep_nport_handle = 0;
726b8548 1370 sess->logout_completed = 0;
2d70c103 1371
726b8548
QT		 1372 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1373 &fcport->port_name[0], sess) < 0) {
83548fe2 1374 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1375 "(%d) %8phC check_initiator_node_acl failed\n",
1376 vha->vp_idx, fcport->port_name);
1377 return NULL;
1378 } else {
1379 kref_init(&fcport->sess_kref);
1380 /*
1381 * Take an extra reference to ->sess_kref here to handle
1382 * fc_port access across ->tgt.sess_lock reaquire.
1383 */
1384 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1385 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1386 "%s: kref_get_unless_zero failed for %8phC\n",
1387 __func__, sess->port_name);
1388 return NULL;
1389 }
2d70c103 1390
726b8548
QT		 1391 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1392 if (!IS_SW_RESV_ADDR(sess->d_id))
1393 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1394
726b8548
QT		 1395 qlt_do_generation_tick(vha, &sess->generation);
1396 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1397 }
1398
1399 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1400 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1401 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1402 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1403
1404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1405 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1406 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1407 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1408 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1409 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1410
1411 return sess;
1412}
1413
df673274
AP		 1414/*
1415 * max_gen - specifies maximum session generation
1416 * at which this deletion requestion is still valid
1417 */
1418void
1419qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1420{
0e8cd71c 1421 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1422 struct fc_port *sess = fcport;
7560151b 1423 unsigned long flags;
2d70c103
NB		 1424
1425 if (!vha->hw->tgt.tgt_ops)
1426 return;
1427
b2032fd5 1428 if (!tgt)
2d70c103
NB		 1429 return;
1430
7560151b 1431 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1432 if (tgt->tgt_stop) {
7560151b 1433 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1434 return;
1435 }
5d964837 1436 if (!sess->se_sess) {
7560151b 1437 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1438 return;
1439 }
1440
df673274 1441 if (max_gen - sess->generation < 0) {
7560151b 1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1444 "Ignoring stale deletion request for se_sess %p / sess %p"
1445 " for port %8phC, req_gen %d, sess_gen %d\n",
1446 sess->se_sess, sess, sess->port_name, max_gen,
1447 sess->generation);
1448 return;
1449 }
1450
2d70c103
NB		 1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1452
1453 sess->local = 1;
94cff6e1 1454 qlt_schedule_sess_for_deletion(sess);
7560151b 1455 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1456}
1457
1458static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1459{
1460 struct qla_hw_data *ha = tgt->ha;
1461 unsigned long flags;
1462 int res;
1463 /*
1464 * We need to protect against race, when tgt is freed before or
1465 * inside wake_up()
1466 */
726b8548 1467 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1468 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1469 "tgt %p, sess_count=%d\n",
1470 tgt, tgt->sess_count);
2d70c103 1471 res = (tgt->sess_count == 0);
726b8548 1472 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1473
1474 return res;
1475}
1476
1477/* Called by tcm_qla2xxx configfs code */
3c231bda 1478int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1479{
1480 struct scsi_qla_host *vha = tgt->vha;
1481 struct qla_hw_data *ha = tgt->ha;
1482 unsigned long flags;
1483
3c231bda
NB		 1484 mutex_lock(&qla_tgt_mutex);
1485 if (!vha->fc_vport) {
1486 struct Scsi_Host *sh = vha->host;
1487 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
1488 bool npiv_vports;
1489
1490 spin_lock_irqsave(sh->host_lock, flags);
1491 npiv_vports = (fc_host->npiv_vports_inuse);
1492 spin_unlock_irqrestore(sh->host_lock, flags);
1493
1494 if (npiv_vports) {
1495 mutex_unlock(&qla_tgt_mutex);
3a33dc95
QT		 1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
1497 "NPIV is in use. Can not stop target\n");
3c231bda
NB		 1498 return -EPERM;
1499 }
1500 }
2d70c103
NB		 1501 if (tgt->tgt_stop || tgt->tgt_stopped) {
1502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1503 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda
NB		 1504 mutex_unlock(&qla_tgt_mutex);
1505 return -EPERM;
2d70c103
NB		 1506 }
1507
3a33dc95 1508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1509 vha->host_no, vha);
1510 /*
1511 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1512 * Lock is needed, because we still can get an incoming packet.
1513 */
0e8cd71c 1514 mutex_lock(&vha->vha_tgt.tgt_mutex);
7560151b 1515 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1516 tgt->tgt_stop = 1;
c5701042 1517 qlt_clear_tgt_db(tgt);
7560151b 1518 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
0e8cd71c 1519 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1520 mutex_unlock(&qla_tgt_mutex);
2d70c103 1521
2d70c103
NB		 1522 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1523 "Waiting for sess works (tgt %p)", tgt);
1524 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1525 while (!list_empty(&tgt->sess_works_list)) {
1526 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1527 flush_scheduled_work();
1528 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1529 }
1530 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1531
1532 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1533 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1534
b85e0957 1535 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1536
1537 /* Big hammer */
ead03855
QT		 1538 if (!ha->flags.host_shutting_down &&
1539 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1540 qlt_disable_vha(vha);
1541
1542 /* Wait for sessions to clear out (just in case) */
b85e0957 1543 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
3c231bda 1544 return 0;
2d70c103
NB		 1545}
1546EXPORT_SYMBOL(qlt_stop_phase1);
1547
1548/* Called by tcm_qla2xxx configfs code */
1549void qlt_stop_phase2(struct qla_tgt *tgt)
1550{
3a33dc95 1551 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1552
1553 if (tgt->tgt_stopped) {
0e8cd71c 1554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1555 "Already in tgt->tgt_stopped state\n");
1556 dump_stack();
1557 return;
1558 }
3a33dc95
QT		 1559 if (!tgt->tgt_stop) {
1560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1561 "%s: phase1 stop is not completed\n", __func__);
1562 dump_stack();
1563 return;
1564 }
2d70c103 1565
0e8cd71c 1566 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1567 tgt->tgt_stop = 0;
1568 tgt->tgt_stopped = 1;
0e8cd71c 1569 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1570
3a33dc95 1571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103
NB		 1572 tgt);
1573}
1574EXPORT_SYMBOL(qlt_stop_phase2);
1575
1576/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1577static void qlt_release(struct qla_tgt *tgt)
2d70c103 1578{
0e8cd71c 1579 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1580 void *node;
1581 u64 key = 0;
1582 u16 i;
1583 struct qla_qpair_hint *h;
bdbe24de 1584 struct qla_hw_data *ha = vha->hw;
2d70c103 1585
3a33dc95
QT		 1586 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1587 !tgt->tgt_stopped)
1588 qlt_stop_phase1(tgt);
1589
0e8cd71c 1590 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1591 qlt_stop_phase2(tgt);
1592
e326d22a
QT		 1593 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1594 unsigned long flags;
1595
1596 h = &tgt->qphints[i];
1597 if (h->qpair) {
1598 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1599 list_del(&h->hint_elem);
1600 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1601 h->qpair = NULL;
1602 }
1603 }
1604 kfree(tgt->qphints);
bdbe24de
QT		 1605 mutex_lock(&qla_tgt_mutex);
1606 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1607 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1608
1609 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1610 btree_remove64(&tgt->lun_qpair_map, key);
1611
1612 btree_destroy64(&tgt->lun_qpair_map);
1613
3be63b1e
SC		 1614 if (vha->vp_idx)
1615 if (ha->tgt.tgt_ops &&
1616 ha->tgt.tgt_ops->remove_target &&
1617 vha->vha_tgt.target_lport_ptr)
1618 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1619
0e8cd71c 1620 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1621
0e8cd71c 1622 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1623 "Release of tgt %p finished\n", tgt);
1624
1625 kfree(tgt);
1626}
1627
1628/* ha->hardware_lock supposed to be held on entry */
1629static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1630 const void *param, unsigned int param_size)
1631{
1632 struct qla_tgt_sess_work_param *prm;
1633 unsigned long flags;
1634
1635 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1636 if (!prm) {
1637 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1638 "qla_target(%d): Unable to create session "
1639 "work, command will be refused", 0);
1640 return -ENOMEM;
1641 }
1642
1643 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1644 "Scheduling work (type %d, prm %p)"
1645 " to find session for param %p (size %d, tgt %p)\n",
1646 type, prm, param, param_size, tgt);
1647
1648 prm->type = type;
1649 memcpy(&prm->tm_iocb, param, param_size);
1650
1651 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1652 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1653 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1654
1655 schedule_work(&tgt->sess_work);
1656
1657 return 0;
1658}
1659
1660/*
1661 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1662 */
82de802a 1663static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1664 struct imm_ntfy_from_isp *ntfy,
1665 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1666 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1667{
82de802a 1668 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1669 struct qla_hw_data *ha = vha->hw;
1670 request_t *pkt;
1671 struct nack_to_isp *nack;
1672
ec7193e2
QT		 1673 if (!ha->flags.fw_started)
1674 return;
1675
2d70c103
NB		 1676 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1677
82de802a 1678 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1679 if (!pkt) {
1680 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1681 "qla_target(%d): %s failed: unable to allocate "
1682 "request packet\n", vha->vp_idx, __func__);
1683 return;
1684 }
1685
0e8cd71c
SK		 1686 if (vha->vha_tgt.qla_tgt != NULL)
1687 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1688
1689 pkt->entry_type = NOTIFY_ACK_TYPE;
1690 pkt->entry_count = 1;
1691
1692 nack = (struct nack_to_isp *)pkt;
1693 nack->ox_id = ntfy->ox_id;
1694
726b8548 1695 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1696 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1697 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1698 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1699 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1700 }
1701 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1702 nack->u.isp24.status = ntfy->u.isp24.status;
1703 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1704 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1705 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1706 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1707 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1708 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1709 nack->u.isp24.srr_reject_code = srr_reject_code;
1710 nack->u.isp24.srr_reject_code_expl = srr_explan;
1711 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1712
1713 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1714 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1715 vha->vp_idx, nack->u.isp24.status);
1716
63163e06
HM		 1717 /* Memory Barrier */
1718 wmb();
82de802a 1719 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1720}
1721
1722/*
1723 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1724 */
82de802a 1725static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1726 struct abts_recv_from_24xx *abts, uint32_t status,
1727 bool ids_reversed)
1728{
82de802a 1729 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1730 struct qla_hw_data *ha = vha->hw;
1731 struct abts_resp_to_24xx *resp;
1732 uint32_t f_ctl;
1733 uint8_t *p;
1734
1735 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1736 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1737 ha, abts, status);
1738
82de802a
QT		 1739 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1740 NULL);
2d70c103
NB		 1741 if (!resp) {
1742 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1743 "qla_target(%d): %s failed: unable to allocate "
1744 "request packet", vha->vp_idx, __func__);
1745 return;
1746 }
1747
1748 resp->entry_type = ABTS_RESP_24XX;
1749 resp->entry_count = 1;
1750 resp->nport_handle = abts->nport_handle;
1751 resp->vp_index = vha->vp_idx;
1752 resp->sof_type = abts->sof_type;
1753 resp->exchange_address = abts->exchange_address;
1754 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1755 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1756 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1757 F_CTL_SEQ_INITIATIVE);
1758 p = (uint8_t *)&f_ctl;
1759 resp->fcp_hdr_le.f_ctl[0] = *p++;
1760 resp->fcp_hdr_le.f_ctl[1] = *p++;
1761 resp->fcp_hdr_le.f_ctl[2] = *p;
1762 if (ids_reversed) {
1763 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1764 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1765 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1766 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1767 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1768 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1769 } else {
1770 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1771 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1772 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1773 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1774 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1775 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1776 }
1777 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1778 if (status == FCP_TMF_CMPL) {
1779 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1780 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1781 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1782 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1783 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1784 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1785 } else {
1786 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1787 resp->payload.ba_rjt.reason_code =
1788 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1789 /* Other bytes are zero */
1790 }
1791
0e8cd71c 1792 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1793
63163e06
HM		 1794 /* Memory Barrier */
1795 wmb();
8abfa9e2
QT		 1796 if (qpair->reqq_start_iocbs)
1797 qpair->reqq_start_iocbs(qpair);
1798 else
1799 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1800}
1801
1802/*
1803 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1804 */
1805static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
1806 struct abts_resp_from_24xx_fw *entry)
1807{
1808 struct ctio7_to_24xx *ctio;
1809
1810 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1811 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
2d70c103 1812
82de802a
QT		 1813 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(
1814 vha->hw->base_qpair, NULL);
2d70c103
NB		 1815 if (ctio == NULL) {
1816 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1817 "qla_target(%d): %s failed: unable to allocate "
1818 "request packet\n", vha->vp_idx, __func__);
1819 return;
1820 }
1821
1822 /*
1823 * We've got on entrance firmware's response on by us generated
1824 * ABTS response. So, in it ID fields are reversed.
1825 */
1826
1827 ctio->entry_type = CTIO_TYPE7;
1828 ctio->entry_count = 1;
1829 ctio->nport_handle = entry->nport_handle;
1830 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1831 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 1832 ctio->vp_index = vha->vp_idx;
1833 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1834 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1835 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1836 ctio->exchange_addr = entry->exchange_addr_to_abort;
ad950360
BVA		 1837 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
1838 CTIO7_FLAGS_TERMINATE);
33a5fcee 1839 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
2d70c103 1840
63163e06
HM		 1841 /* Memory Barrier */
1842 wmb();
2d70c103
NB		 1843 qla2x00_start_iocbs(vha, vha->req);
1844
82de802a
QT		 1845 qlt_24xx_send_abts_resp(vha->hw->base_qpair,
1846 (struct abts_recv_from_24xx *)entry,
2d70c103
NB		 1847 FCP_TMF_CMPL, true);
1848}
1849
8b2f5ff3
SN		 1850static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
1851{
1852 struct qla_tgt_sess_op *op;
1853 struct qla_tgt_cmd *cmd;
8b631d87 1854 unsigned long flags;
8b2f5ff3 1855
8b631d87 1856 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1857 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1858 if (tag == op->atio.u.isp24.exchange_addr) {
1859 op->aborted = true;
8b631d87 1860 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1861 return 1;
1862 }
1863 }
1864
41dc529a
QT		 1865 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1866 if (tag == op->atio.u.isp24.exchange_addr) {
1867 op->aborted = true;
8b631d87 1868 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
41dc529a
QT		 1869 return 1;
1870 }
1871 }
1872
8b2f5ff3
SN		 1873 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1874 if (tag == cmd->atio.u.isp24.exchange_addr) {
193b50b9 1875 cmd->aborted = 1;
8b631d87 1876 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1877 return 1;
1878 }
1879 }
8b631d87 1880 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 1881
8b2f5ff3
SN		 1882 return 0;
1883}
1884
1885/* drop cmds for the given lun
1886 * XXX only looks for cmds on the port through which lun reset was recieved
1887 * XXX does not go through the list of other port (which may have cmds
1888 * for the same lun)
1889 */
1890static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1891 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1892{
1893 struct qla_tgt_sess_op *op;
1894 struct qla_tgt_cmd *cmd;
1895 uint32_t key;
8b631d87 1896 unsigned long flags;
8b2f5ff3
SN		 1897
1898 key = sid_to_key(s_id);
8b631d87 1899 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1900 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1901 uint32_t op_key;
f775bd14 1902 u64 op_lun;
8b2f5ff3
SN		 1903
1904 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1905 op_lun = scsilun_to_int(
1906 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1907 if (op_key == key && op_lun == lun)
1908 op->aborted = true;
1909 }
41dc529a
QT		 1910
1911 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1912 uint32_t op_key;
1913 u64 op_lun;
1914
1915 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1916 op_lun = scsilun_to_int(
1917 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1918 if (op_key == key && op_lun == lun)
1919 op->aborted = true;
1920 }
1921
8b2f5ff3
SN		 1922 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1923 uint32_t cmd_key;
f775bd14 1924 u64 cmd_lun;
8b2f5ff3
SN		 1925
1926 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1927 cmd_lun = scsilun_to_int(
1928 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
1929 if (cmd_key == key && cmd_lun == lun)
193b50b9 1930 cmd->aborted = 1;
8b2f5ff3 1931 }
8b631d87 1932 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1933}
1934
2d70c103
NB		 1935/* ha->hardware_lock supposed to be held on entry */
1936static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 1937 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 1938{
1939 struct qla_hw_data *ha = vha->hw;
1940 struct qla_tgt_mgmt_cmd *mcmd;
1941 int rc;
06e97b48 1942
eb5ae233
NB		 1943 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
1944 /* send TASK_ABORT response immediately */
48ea2ced 1945 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false);
eb5ae233 1946 return 0;
8b2f5ff3 1947 }
2d70c103
NB		 1948
1949 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
1950 "qla_target(%d): task abort (tag=%d)\n",
1951 vha->vp_idx, abts->exchange_addr_to_abort);
1952
1953 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
1954 if (mcmd == NULL) {
1955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
1956 "qla_target(%d): %s: Allocation of ABORT cmd failed",
1957 vha->vp_idx, __func__);
1958 return -ENOMEM;
1959 }
1960 memset(mcmd, 0, sizeof(*mcmd));
1961
1962 mcmd->sess = sess;
1963 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 1964 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 1965 mcmd->tmr_func = QLA_TGT_ABTS;
82de802a 1966 mcmd->qpair = ha->base_qpair;
72fcd4eb 1967 mcmd->vha = vha;
2d70c103 1968
eb5ae233
NB		 1969 /*
1970 * LUN is looked up by target-core internally based on the passed
1971 * abts->exchange_addr_to_abort tag.
1972 */
1973 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func,
2d70c103
NB		 1974 abts->exchange_addr_to_abort);
1975 if (rc != 0) {
1976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
1977 "qla_target(%d): tgt_ops->handle_tmr()"
1978 " failed: %d", vha->vp_idx, rc);
1979 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
1980 return -EFAULT;
1981 }
1982
1983 return 0;
1984}
1985
1986/*
1987 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1988 */
1989static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
1990 struct abts_recv_from_24xx *abts)
1991{
1992 struct qla_hw_data *ha = vha->hw;
5d964837 1993 struct fc_port *sess;
2d70c103
NB		 1994 uint32_t tag = abts->exchange_addr_to_abort;
1995 uint8_t s_id[3];
1996 int rc;
7560151b 1997 unsigned long flags;
2d70c103
NB		 1998
1999 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2001 "qla_target(%d): ABTS: Abort Sequence not "
2002 "supported\n", vha->vp_idx);
82de802a
QT		 2003 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2004 false);
2d70c103
NB		 2005 return;
2006 }
2007
2008 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2010 "qla_target(%d): ABTS: Unknown Exchange "
2011 "Address received\n", vha->vp_idx);
82de802a
QT		 2012 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2013 false);
2d70c103
NB		 2014 return;
2015 }
2016
2017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2018 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2019 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2020 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2021 le32_to_cpu(abts->fcp_hdr_le.parameter));
2022
2023 s_id[0] = abts->fcp_hdr_le.s_id[2];
2024 s_id[1] = abts->fcp_hdr_le.s_id[1];
2025 s_id[2] = abts->fcp_hdr_le.s_id[0];
2026
7560151b 2027 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 2028 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2029 if (!sess) {
2030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
2031 "qla_target(%d): task abort for non-existant session\n",
2032 vha->vp_idx);
7560151b
QT		 2033 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2034
fb35265b
QT		 2035 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2036 false);
2d70c103
NB		 2037 return;
2038 }
7560151b
QT		 2039 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2040
2d70c103 2041
726b8548 2042 if (sess->deleted) {
82de802a
QT		 2043 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2044 false);
e52a8b45
AP		 2045 return;
2046 }
2047
2d70c103
NB		 2048 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2049 if (rc != 0) {
2050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2051 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2052 vha->vp_idx, rc);
82de802a
QT		 2053 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2054 false);
2d70c103
NB		 2055 return;
2056 }
2057}
2058
2059/*
2060 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2061 */
82de802a 2062static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2063 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2064{
72fcd4eb 2065 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2066 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2067 struct ctio7_to_24xx *ctio;
33a5fcee 2068 uint16_t temp;
2d70c103
NB		 2069
2070 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2071 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2072 ha, atio, resp_code);
2073
2d70c103 2074
82de802a 2075 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2076 if (ctio == NULL) {
2077 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2078 "qla_target(%d): %s failed: unable to allocate "
2079 "request packet\n", ha->vp_idx, __func__);
2080 return;
2081 }
2082
2083 ctio->entry_type = CTIO_TYPE7;
2084 ctio->entry_count = 1;
2085 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2086 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2087 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2088 ctio->vp_index = ha->vp_idx;
2089 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2090 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2091 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2092 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2093 temp = (atio->u.isp24.attr << 9)|
2094 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2095 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2096 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2097 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2098 ctio->u.status1.scsi_status =
ad950360
BVA		 2099 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2100 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2101 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2102
63163e06
HM		 2103 /* Memory Barrier */
2104 wmb();
8abfa9e2
QT		 2105 if (qpair->reqq_start_iocbs)
2106 qpair->reqq_start_iocbs(qpair);
2107 else
2108 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2109}
2110
2111void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2112{
2113 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2114}
2115EXPORT_SYMBOL(qlt_free_mcmd);
2116
be25152c
QT		 2117/*
2118 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2119 * reacquire
2120 */
8abfa9e2 2121void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2122 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2123{
2124 struct atio_from_isp *atio = &cmd->atio;
2125 struct ctio7_to_24xx *ctio;
2126 uint16_t temp;
8abfa9e2 2127 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2128
2129 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2130 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2131 "sense_key=%02x, asc=%02x, ascq=%02x",
2132 vha, atio, scsi_status, sense_key, asc, ascq);
2133
2134 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2135 if (!ctio) {
2136 ql_dbg(ql_dbg_async, vha, 0x3067,
2137 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2138 vha->host_no, __func__);
2139 goto out;
2140 }
2141
2142 ctio->entry_type = CTIO_TYPE7;
2143 ctio->entry_count = 1;
2144 ctio->handle = QLA_TGT_SKIP_HANDLE;
2145 ctio->nport_handle = cmd->sess->loop_id;
2146 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2147 ctio->vp_index = vha->vp_idx;
2148 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2149 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2150 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2151 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2152 temp = (atio->u.isp24.attr << 9) |
2153 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2154 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2155 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2156 ctio->u.status1.ox_id = cpu_to_le16(temp);
2157 ctio->u.status1.scsi_status =
2158 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2159 ctio->u.status1.response_len = cpu_to_le16(18);
2160 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2161
2162 if (ctio->u.status1.residual != 0)
2163 ctio->u.status1.scsi_status |=
2164 cpu_to_le16(SS_RESIDUAL_UNDER);
2165
2166 /* Response code and sense key */
2167 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2168 (&ctio->u.status1.sense_data)[0]);
2169 /* Additional sense length */
2170 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2171 /* ASC and ASCQ */
2172 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2173 (&ctio->u.status1.sense_data)[3]);
2174
2175 /* Memory Barrier */
2176 wmb();
2177
8abfa9e2
QT		 2178 if (qpair->reqq_start_iocbs)
2179 qpair->reqq_start_iocbs(qpair);
2180 else
2181 qla2x00_start_iocbs(vha, qpair->req);
2182
be25152c
QT		 2183out:
2184 return;
2185}
2186
2d70c103
NB		 2187/* callback from target fabric module code */
2188void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2189{
2190 struct scsi_qla_host *vha = mcmd->sess->vha;
2191 struct qla_hw_data *ha = vha->hw;
2192 unsigned long flags;
82de802a 2193 struct qla_qpair *qpair = mcmd->qpair;
2d70c103
NB		 2194
2195 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2196 "TM response mcmd (%p) status %#x state %#x",
2197 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2198
82de802a 2199 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2200
7c3f8fd1 2201 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2202 /*
3bb67df5 2203 * Either the port is not online or this request was from
b6a029e1
AE		 2204 * previous life, just abort the processing.
2205 */
2206 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2207 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2208 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2209 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2210 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2211 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2212 return;
2213 }
2214
726b8548
QT		 2215 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
2216 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
41dc529a
QT		 2217 ELS_LOGO ||
2218 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2219 ELS_PRLO ||
2220 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode ==
2221 ELS_TPRLO) {
83548fe2 2222 ql_dbg(ql_dbg_disc, vha, 0x2106,
726b8548
QT		 2223 "TM response logo %phC status %#x state %#x",
2224 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2225 mcmd->flags);
d8630bb9 2226 qlt_schedule_sess_for_deletion(mcmd->sess);
726b8548 2227 } else {
82de802a
QT		 2228 qlt_send_notify_ack(vha->hw->base_qpair,
2229 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
726b8548
QT		 2230 }
2231 } else {
d7236ac3 2232 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX)
82de802a 2233 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts,
2d70c103
NB		 2234 mcmd->fc_tm_rsp, false);
2235 else
82de802a 2236 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2237 mcmd->fc_tm_rsp);
2238 }
2239 /*
2240 * Make the callback for ->free_mcmd() to queue_work() and invoke
2241 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2242 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2243 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2244 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2245 * qlt_xmit_tm_rsp() returns here..
2246 */
2247 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2248 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2249}
2250EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2251
2252/* No locks */
2253static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2254{
2255 struct qla_tgt_cmd *cmd = prm->cmd;
2256
2257 BUG_ON(cmd->sg_cnt == 0);
2258
2259 prm->sg = (struct scatterlist *)cmd->sg;
8abfa9e2 2260 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg,
2d70c103
NB		 2261 cmd->sg_cnt, cmd->dma_data_direction);
2262 if (unlikely(prm->seg_cnt == 0))
2263 goto out_err;
2264
2265 prm->cmd->sg_mapped = 1;
2266
f83adb61
QT		 2267 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2268 /*
2269 * If greater than four sg entries then we need to allocate
2270 * the continuation entries
2271 */
b5399f7d 2272 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2273 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2274 QLA_TGT_DATASEGS_PER_CMD_24XX,
2275 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2276 } else {
2277 /* DIF */
2278 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2279 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2280 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2281 prm->tot_dsds = prm->seg_cnt;
2282 } else
2283 prm->tot_dsds = prm->seg_cnt;
2284
2285 if (cmd->prot_sg_cnt) {
2286 prm->prot_sg = cmd->prot_sg;
8abfa9e2 2287 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev,
f83adb61
QT		 2288 cmd->prot_sg, cmd->prot_sg_cnt,
2289 cmd->dma_data_direction);
2290 if (unlikely(prm->prot_seg_cnt == 0))
2291 goto out_err;
2292
2293 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2294 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2295 /* Dif Bundling not support here */
2296 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2297 cmd->blk_sz);
2298 prm->tot_dsds += prm->prot_seg_cnt;
2299 } else
2300 prm->tot_dsds += prm->prot_seg_cnt;
2301 }
2302 }
2d70c103 2303
2d70c103
NB		 2304 return 0;
2305
2306out_err:
22d84726 2307 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2308 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2309 0, prm->cmd->sg_cnt);
2310 return -1;
2311}
2312
f9b6721a 2313static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2314{
8abfa9e2
QT		 2315 struct qla_hw_data *ha;
2316 struct qla_qpair *qpair;
f9b6721a
JE		 2317 if (!cmd->sg_mapped)
2318 return;
2319
8abfa9e2
QT		 2320 qpair = cmd->qpair;
2321
2322 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt,
2323 cmd->dma_data_direction);
2d70c103 2324 cmd->sg_mapped = 0;
f83adb61
QT		 2325
2326 if (cmd->prot_sg_cnt)
8abfa9e2 2327 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2328 cmd->dma_data_direction);
2329
d5ff0eed
JC		 2330 if (!cmd->ctx)
2331 return;
8abfa9e2 2332 ha = vha->hw;
f83adb61 2333 if (cmd->ctx_dsd_alloced)
d5ff0eed 2334 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2335
d5ff0eed 2336 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2337}
2338
82de802a 2339static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2340 uint32_t req_cnt)
2341{
d63b328f 2342 uint32_t cnt;
82de802a 2343 struct req_que *req = qpair->req;
2d70c103 2344
82de802a 2345 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2346 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2347 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2348
82de802a
QT		 2349 if (req->ring_index < cnt)
2350 req->cnt = cnt - req->ring_index;
2d70c103 2351 else
82de802a 2352 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2353
82de802a 2354 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2355 return -EAGAIN;
2d70c103 2356 }
bc7095a9 2357
82de802a 2358 req->cnt -= req_cnt;
2d70c103
NB		 2359
2360 return 0;
2361}
2362
2363/*
2364 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2365 */
82de802a 2366static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2367{
2368 /* Adjust ring index. */
82de802a
QT		 2369 req->ring_index++;
2370 if (req->ring_index == req->length) {
2371 req->ring_index = 0;
2372 req->ring_ptr = req->ring;
2d70c103 2373 } else {
82de802a 2374 req->ring_ptr++;
2d70c103 2375 }
82de802a 2376 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2377}
2378
2379/* ha->hardware_lock supposed to be held on entry */
82de802a 2380static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2381{
2d70c103 2382 uint32_t h;
c5419e26
QT		 2383 int index;
2384 uint8_t found = 0;
82de802a 2385 struct req_que *req = qpair->req;
c5419e26
QT		 2386
2387 h = req->current_outstanding_cmd;
2d70c103 2388
c5419e26
QT		 2389 for (index = 1; index < req->num_outstanding_cmds; index++) {
2390 h++;
2391 if (h == req->num_outstanding_cmds)
2392 h = 1;
2393
2394 if (h == QLA_TGT_SKIP_HANDLE)
2395 continue;
2396
2397 if (!req->outstanding_cmds[h]) {
2398 found = 1;
2d70c103
NB		 2399 break;
2400 }
c5419e26 2401 }
2d70c103 2402
c5419e26
QT		 2403 if (found) {
2404 req->current_outstanding_cmd = h;
2405 } else {
8abfa9e2
QT		 2406 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2407 "qla_target(%d): Ran out of empty cmd slots\n",
2408 qpair->vha->vp_idx);
c5419e26
QT		 2409 h = QLA_TGT_NULL_HANDLE;
2410 }
2d70c103
NB		 2411
2412 return h;
2413}
2414
2415/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2416static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2417 struct qla_tgt_prm *prm)
2d70c103
NB		 2418{
2419 uint32_t h;
2420 struct ctio7_to_24xx *pkt;
2d70c103 2421 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2422 uint16_t temp;
2d70c103 2423
82de802a 2424 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2425 prm->pkt = pkt;
2426 memset(pkt, 0, sizeof(*pkt));
2427
2428 pkt->entry_type = CTIO_TYPE7;
2429 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2430 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2431
82de802a 2432 h = qlt_make_handle(qpair);
2d70c103
NB		 2433 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2434 /*
2435 * CTIO type 7 from the firmware doesn't provide a way to
2436 * know the initiator's LOOP ID, hence we can't find
2437 * the session and, so, the command.
2438 */
2439 return -EAGAIN;
e326d22a
QT		 2440 } else
2441 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2442
82de802a
QT		 2443 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2444 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2445 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2446 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2447 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2448 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2449 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2450 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2451 temp = atio->u.isp24.attr << 9;
2452 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2453 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2454 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2455 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2456
2d70c103
NB		 2457 return 0;
2458}
2459
2460/*
2461 * ha->hardware_lock supposed to be held on entry. We have already made sure
2462 * that there is sufficient amount of request entries to not drop it.
2463 */
32d29b4c 2464static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2465{
2466 int cnt;
2467 uint32_t *dword_ptr;
2d70c103
NB		 2468
2469 /* Build continuation packets */
2470 while (prm->seg_cnt > 0) {
2471 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2472 (cont_a64_entry_t *)qlt_get_req_pkt(
2473 prm->cmd->qpair->req);
2d70c103
NB		 2474
2475 /*
2476 * Make sure that from cont_pkt64 none of
2477 * 64-bit specific fields used for 32-bit
2478 * addressing. Cast to (cont_entry_t *) for
2479 * that.
2480 */
2481
2482 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2483
2484 cont_pkt64->entry_count = 1;
2485 cont_pkt64->sys_define = 0;
2486
32d29b4c
QT		 2487 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
2488 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address;
2d70c103
NB		 2489
2490 /* Load continuation entry data segments */
2491 for (cnt = 0;
b5399f7d 2492 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103
NB		 2493 cnt++, prm->seg_cnt--) {
2494 *dword_ptr++ =
2495 cpu_to_le32(pci_dma_lo32
2496 (sg_dma_address(prm->sg)));
32d29b4c
QT		 2497 *dword_ptr++ = cpu_to_le32(pci_dma_hi32
2498 (sg_dma_address(prm->sg)));
2d70c103
NB		 2499 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2500
2d70c103
NB		 2501 prm->sg = sg_next(prm->sg);
2502 }
2503 }
2504}
2505
2506/*
2507 * ha->hardware_lock supposed to be held on entry. We have already made sure
2508 * that there is sufficient amount of request entries to not drop it.
2509 */
32d29b4c 2510static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2511{
2512 int cnt;
2513 uint32_t *dword_ptr;
2d70c103
NB		 2514 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2515
2d70c103
NB		 2516 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2517
2518 /* Setup packet address segment pointer */
2519 dword_ptr = pkt24->u.status0.dseg_0_address;
2520
2521 /* Set total data segment count */
2522 if (prm->seg_cnt)
2523 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2524
2525 if (prm->seg_cnt == 0) {
2526 /* No data transfer */
2527 *dword_ptr++ = 0;
2528 *dword_ptr = 0;
2529 return;
2530 }
2531
2532 /* If scatter gather */
2d70c103
NB		 2533
2534 /* Load command entry data segments */
2535 for (cnt = 0;
b5399f7d 2536 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103
NB		 2537 cnt++, prm->seg_cnt--) {
2538 *dword_ptr++ =
2539 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
32d29b4c
QT		 2540
2541 *dword_ptr++ = cpu_to_le32(pci_dma_hi32(
2542 sg_dma_address(prm->sg)));
2543
2d70c103
NB		 2544 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
2545
2d70c103
NB		 2546 prm->sg = sg_next(prm->sg);
2547 }
2548
32d29b4c 2549 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2550}
2551
2552static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2553{
2554 return cmd->bufflen > 0;
2555}
2556
be25152c
QT		 2557static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2558{
2559 struct qla_tgt_cmd *cmd;
2560 struct scsi_qla_host *vha;
2561
2562 /* asc 0x10=dif error */
2563 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2564 cmd = prm->cmd;
2565 vha = cmd->vha;
2566 /* ASCQ */
2567 switch (prm->sense_buffer[13]) {
2568 case 1:
83548fe2 2569 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2570 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2571 "se_cmd=%p tag[%x]",
2572 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2573 cmd->atio.u.isp24.exchange_addr);
2574 break;
2575 case 2:
83548fe2 2576 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2577 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2578 "se_cmd=%p tag[%x]",
2579 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2580 cmd->atio.u.isp24.exchange_addr);
2581 break;
2582 case 3:
83548fe2 2583 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2584 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2585 "se_cmd=%p tag[%x]",
2586 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2587 cmd->atio.u.isp24.exchange_addr);
2588 break;
2589 default:
83548fe2 2590 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2591 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2592 "se_cmd=%p tag[%x]",
2593 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2594 cmd->atio.u.isp24.exchange_addr);
2595 break;
2596 }
83548fe2 2597 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2598 }
2599}
2600
2d70c103
NB		 2601/*
2602 * Called without ha->hardware_lock held
2603 */
2604static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2605 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2606 uint32_t *full_req_cnt)
2607{
2d70c103 2608 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2609 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2610
2d70c103 2611 prm->cmd = cmd;
7c3f8fd1
QT		 2612 prm->tgt = cmd->tgt;
2613 prm->pkt = NULL;
2d70c103
NB		 2614 prm->rq_result = scsi_status;
2615 prm->sense_buffer = &cmd->sense_buffer[0];
2616 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2617 prm->sg = NULL;
2618 prm->seg_cnt = -1;
2619 prm->req_cnt = 1;
7c3f8fd1 2620 prm->residual = 0;
2d70c103 2621 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2622 prm->prot_sg = NULL;
2623 prm->prot_seg_cnt = 0;
2624 prm->tot_dsds = 0;
2d70c103 2625
2d70c103
NB		 2626 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2627 if (qlt_pci_map_calc_cnt(prm) != 0)
2628 return -EAGAIN;
2629 }
2630
2631 *full_req_cnt = prm->req_cnt;
2632
2633 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2634 prm->residual = se_cmd->residual_count;
22d84726 2635 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2636 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2637 prm->residual, se_cmd->tag,
2638 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2639 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2640 prm->rq_result |= SS_RESIDUAL_UNDER;
2641 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2642 prm->residual = se_cmd->residual_count;
22d84726 2643 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2644 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2645 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2646 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2647 prm->rq_result |= SS_RESIDUAL_OVER;
2648 }
2649
2650 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2651 /*
2652 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2653 * ignored in *xmit_response() below
2654 */
2655 if (qlt_has_data(cmd)) {
2656 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2657 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2658 (prm->rq_result != 0))) {
2659 prm->add_status_pkt = 1;
2660 (*full_req_cnt)++;
2661 }
2662 }
2663 }
2664
2d70c103
NB		 2665 return 0;
2666}
2667
7c3f8fd1
QT		 2668static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2669 int sending_sense)
2d70c103 2670{
7c3f8fd1 2671 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2672 return 0;
2673
2674 if (sending_sense)
2675 return cmd->conf_compl_supported;
2676 else
7c3f8fd1
QT		 2677 return cmd->qpair->enable_explicit_conf &&
2678 cmd->conf_compl_supported;
2d70c103
NB		 2679}
2680
2d70c103
NB		 2681static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2682 struct qla_tgt_prm *prm)
2683{
2684 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2685 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2686 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2687 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2688 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2689 CTIO7_FLAGS_EXPLICIT_CONFORM |
2690 CTIO7_FLAGS_CONFORM_REQ);
2691 }
2692 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2693 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2694 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2695 int i;
2696
7c3f8fd1 2697 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2698 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2699 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2700 "Skipping EXPLICIT_CONFORM and "
2701 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2702 "non GOOD status\n");
2703 goto skip_explict_conf;
2704 }
ad950360 2705 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2706 CTIO7_FLAGS_EXPLICIT_CONFORM |
2707 CTIO7_FLAGS_CONFORM_REQ);
2708 }
2709skip_explict_conf:
2710 ctio->u.status1.flags &=
ad950360 2711 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2712 ctio->u.status1.flags |=
ad950360 2713 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2714 ctio->u.status1.scsi_status |=
ad950360 2715 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2716 ctio->u.status1.sense_length =
2717 cpu_to_le16(prm->sense_buffer_len);
2718 for (i = 0; i < prm->sense_buffer_len/4; i++)
2719 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2720 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2721
2722 qlt_print_dif_err(prm);
2723
2d70c103
NB		 2724 } else {
2725 ctio->u.status1.flags &=
ad950360 2726 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2727 ctio->u.status1.flags |=
ad950360 2728 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2729 ctio->u.status1.sense_length = 0;
2730 memset(ctio->u.status1.sense_data, 0,
2731 sizeof(ctio->u.status1.sense_data));
2732 }
2733
2734 /* Sense with len > 24, is it possible ??? */
2735}
2736
f83adb61
QT		 2737static inline int
2738qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2739{
f83adb61
QT		 2740 switch (se_cmd->prot_op) {
2741 case TARGET_PROT_DOUT_INSERT:
2742 case TARGET_PROT_DIN_STRIP:
2743 if (ql2xenablehba_err_chk >= 1)
2744 return 1;
2745 break;
2746 case TARGET_PROT_DOUT_PASS:
2747 case TARGET_PROT_DIN_PASS:
2748 if (ql2xenablehba_err_chk >= 2)
2749 return 1;
2750 break;
2751 case TARGET_PROT_DIN_INSERT:
2752 case TARGET_PROT_DOUT_STRIP:
2753 return 1;
2754 default:
2755 break;
2756 }
2757 return 0;
2758}
2759
be25152c
QT		 2760static inline int
2761qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2762{
2763 switch (se_cmd->prot_op) {
2764 case TARGET_PROT_DIN_INSERT:
2765 case TARGET_PROT_DOUT_INSERT:
2766 case TARGET_PROT_DIN_STRIP:
2767 case TARGET_PROT_DOUT_STRIP:
2768 case TARGET_PROT_DIN_PASS:
2769 case TARGET_PROT_DOUT_PASS:
2770 return 1;
2771 default:
2772 return 0;
2773 }
2774 return 0;
2775}
2776
f83adb61 2777/*
be25152c 2778 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2779 */
be25152c
QT		 2780static void
2781qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2782 uint16_t *pfw_prot_opts)
f83adb61 2783{
be25152c 2784 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2785 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2786 scsi_qla_host_t *vha = cmd->tgt->vha;
2787 struct qla_hw_data *ha = vha->hw;
2788 uint32_t t32 = 0;
f83adb61 2789
be25152c
QT		 2790 /*
2791 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2792 * have been immplemented by TCM, before AppTag is avail.
2793 * Look for modesense_handlers[]
2794 */
c7ee3bd4 2795 ctx->app_tag = 0;
f83adb61
QT		 2796 ctx->app_tag_mask[0] = 0x0;
2797 ctx->app_tag_mask[1] = 0x0;
2798
be25152c
QT		 2799 if (IS_PI_UNINIT_CAPABLE(ha)) {
2800 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2801 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2802 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2803 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2804 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2805 }
2806
2807 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2808
f83adb61
QT		 2809 switch (se_cmd->prot_type) {
2810 case TARGET_DIF_TYPE0_PROT:
2811 /*
be25152c
QT		 2812 * No check for ql2xenablehba_err_chk, as it
2813 * would be an I/O error if hba tag generation
2814 * is not done.
f83adb61
QT		 2815 */
2816 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2817 /* enable ALL bytes of the ref tag */
2818 ctx->ref_tag_mask[0] = 0xff;
2819 ctx->ref_tag_mask[1] = 0xff;
2820 ctx->ref_tag_mask[2] = 0xff;
2821 ctx->ref_tag_mask[3] = 0xff;
2822 break;
f83adb61 2823 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2824 /*
2825 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2826 * REF tag, and 16 bit app tag.
2827 */
2828 ctx->ref_tag = cpu_to_le32(lba);
2829 if (!qla_tgt_ref_mask_check(se_cmd) ||
2830 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2831 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2832 break;
2833 }
2834 /* enable ALL bytes of the ref tag */
2835 ctx->ref_tag_mask[0] = 0xff;
2836 ctx->ref_tag_mask[1] = 0xff;
2837 ctx->ref_tag_mask[2] = 0xff;
2838 ctx->ref_tag_mask[3] = 0xff;
2839 break;
f83adb61 2840 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2841 /*
2842 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2843 * tag has to match LBA in CDB + N
2844 */
2845 ctx->ref_tag = cpu_to_le32(lba);
2846 if (!qla_tgt_ref_mask_check(se_cmd) ||
2847 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2848 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2849 break;
2850 }
2851 /* enable ALL bytes of the ref tag */
2852 ctx->ref_tag_mask[0] = 0xff;
2853 ctx->ref_tag_mask[1] = 0xff;
2854 ctx->ref_tag_mask[2] = 0xff;
2855 ctx->ref_tag_mask[3] = 0xff;
2856 break;
f83adb61 2857 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2858 /* For TYPE 3 protection: 16 bit GUARD only */
2859 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2860 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2861 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2862 break;
f83adb61
QT		 2863 }
2864}
2865
f83adb61 2866static inline int
82de802a 2867qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61
QT		 2868{
2869 uint32_t *cur_dsd;
f83adb61
QT		 2870 uint32_t transfer_length = 0;
2871 uint32_t data_bytes;
2872 uint32_t dif_bytes;
2873 uint8_t bundling = 1;
2874 uint8_t *clr_ptr;
2875 struct crc_context *crc_ctx_pkt = NULL;
2876 struct qla_hw_data *ha;
2877 struct ctio_crc2_to_fw *pkt;
2878 dma_addr_t crc_ctx_dma;
2879 uint16_t fw_prot_opts = 0;
2880 struct qla_tgt_cmd *cmd = prm->cmd;
2881 struct se_cmd *se_cmd = &cmd->se_cmd;
2882 uint32_t h;
2883 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 2884 struct qla_tc_param tc;
c7ee3bd4 2885 uint16_t t16;
82de802a 2886 scsi_qla_host_t *vha = cmd->vha;
f83adb61 2887
f83adb61
QT		 2888 ha = vha->hw;
2889
82de802a 2890 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 2891 prm->pkt = pkt;
2892 memset(pkt, 0, sizeof(*pkt));
2893
22d84726 2894 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 2895 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 2896 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 2897 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
2898
2899 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
2900 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
2901 bundling = 0;
2902
2903 /* Compute dif len and adjust data len to incude protection */
2904 data_bytes = cmd->bufflen;
2905 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
2906
2907 switch (se_cmd->prot_op) {
2908 case TARGET_PROT_DIN_INSERT:
2909 case TARGET_PROT_DOUT_STRIP:
2910 transfer_length = data_bytes;
be25152c
QT		 2911 if (cmd->prot_sg_cnt)
2912 data_bytes += dif_bytes;
f83adb61 2913 break;
f83adb61
QT		 2914 case TARGET_PROT_DIN_STRIP:
2915 case TARGET_PROT_DOUT_INSERT:
2916 case TARGET_PROT_DIN_PASS:
2917 case TARGET_PROT_DOUT_PASS:
2918 transfer_length = data_bytes + dif_bytes;
2919 break;
f83adb61
QT		 2920 default:
2921 BUG();
2922 break;
2923 }
2924
2925 if (!qlt_hba_err_chk_enabled(se_cmd))
2926 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
2927 /* HBA error checking enabled */
2928 else if (IS_PI_UNINIT_CAPABLE(ha)) {
2929 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2930 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2931 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
2932 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2933 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2934 }
2935
2936 switch (se_cmd->prot_op) {
2937 case TARGET_PROT_DIN_INSERT:
2938 case TARGET_PROT_DOUT_INSERT:
2939 fw_prot_opts |= PO_MODE_DIF_INSERT;
2940 break;
2941 case TARGET_PROT_DIN_STRIP:
2942 case TARGET_PROT_DOUT_STRIP:
2943 fw_prot_opts |= PO_MODE_DIF_REMOVE;
2944 break;
2945 case TARGET_PROT_DIN_PASS:
2946 case TARGET_PROT_DOUT_PASS:
2947 fw_prot_opts |= PO_MODE_DIF_PASS;
2948 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
2949 break;
2950 default:/* Normal Request */
2951 fw_prot_opts |= PO_MODE_DIF_PASS;
2952 break;
2953 }
2954
f83adb61
QT		 2955 /* ---- PKT ---- */
2956 /* Update entry type to indicate Command Type CRC_2 IOCB */
2957 pkt->entry_type = CTIO_CRC2;
2958 pkt->entry_count = 1;
22d84726 2959 pkt->vp_index = cmd->vp_idx;
f83adb61 2960
82de802a 2961 h = qlt_make_handle(qpair);
f83adb61
QT		 2962 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2963 /*
2964 * CTIO type 7 from the firmware doesn't provide a way to
2965 * know the initiator's LOOP ID, hence we can't find
2966 * the session and, so, the command.
2967 */
2968 return -EAGAIN;
2969 } else
82de802a 2970 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 2971
82de802a
QT		 2972 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2973 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 2974 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2975 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 2976 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2977 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2978 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2979 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 2980
2981 /* silence compile warning */
2982 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2983 pkt->ox_id = cpu_to_le16(t16);
2984
2985 t16 = (atio->u.isp24.attr << 9);
2986 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 2987 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
2988
2989 /* Set transfer direction */
2990 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 2991 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 2992 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 2993 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 2994
f83adb61
QT		 2995 pkt->dseg_count = prm->tot_dsds;
2996 /* Fibre channel byte count */
2997 pkt->transfer_length = cpu_to_le32(transfer_length);
2998
f83adb61
QT		 2999 /* ----- CRC context -------- */
3000
3001 /* Allocate CRC context from global pool */
3002 crc_ctx_pkt = cmd->ctx =
3003 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
3004
3005 if (!crc_ctx_pkt)
3006 goto crc_queuing_error;
3007
3008 /* Zero out CTX area. */
3009 clr_ptr = (uint8_t *)crc_ctx_pkt;
3010 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
3011
3012 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3013 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3014
3015 /* Set handle */
3016 crc_ctx_pkt->handle = pkt->handle;
3017
be25152c 3018 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 3019
3020 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3021 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3022 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3023
f83adb61
QT		 3024 if (!bundling) {
3025 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
3026 } else {
3027 /*
3028 * Configure Bundling if we need to fetch interlaving
3029 * protection PCI accesses
3030 */
3031 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3032 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3033 crc_ctx_pkt->u.bundling.dseg_count =
3034 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
3035 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
3036 }
3037
3038 /* Finish the common fields of CRC pkt */
3039 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3040 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3041 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3042 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3043
be25152c
QT		 3044 memset((uint8_t *)&tc, 0 , sizeof(tc));
3045 tc.vha = vha;
3046 tc.blk_sz = cmd->blk_sz;
3047 tc.bufflen = cmd->bufflen;
3048 tc.sg = cmd->sg;
3049 tc.prot_sg = cmd->prot_sg;
3050 tc.ctx = crc_ctx_pkt;
3051 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3052
3053 /* Walks data segments */
ad950360 3054 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3055
3056 if (!bundling && prm->prot_seg_cnt) {
3057 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3058 prm->tot_dsds, &tc))
f83adb61
QT		 3059 goto crc_queuing_error;
3060 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3061 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3062 goto crc_queuing_error;
3063
3064 if (bundling && prm->prot_seg_cnt) {
3065 /* Walks dif segments */
c7ee3bd4 3066 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61
QT		 3067
3068 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
3069 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
be25152c 3070 prm->prot_seg_cnt, &tc))
f83adb61
QT		 3071 goto crc_queuing_error;
3072 }
3073 return QLA_SUCCESS;
3074
3075crc_queuing_error:
3076 /* Cleanup will be performed by the caller */
82de802a 3077 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3078
3079 return QLA_FUNCTION_FAILED;
3080}
3081
2d70c103
NB		 3082/*
3083 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3084 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3085 */
3086int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3087 uint8_t scsi_status)
3088{
3089 struct scsi_qla_host *vha = cmd->vha;
82de802a 3090 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3091 struct ctio7_to_24xx *pkt;
3092 struct qla_tgt_prm prm;
3093 uint32_t full_req_cnt = 0;
3094 unsigned long flags = 0;
3095 int res;
3096
726b8548 3097 if (cmd->sess && cmd->sess->deleted) {
a6ca8878
AP		 3098 cmd->state = QLA_TGT_STATE_PROCESSED;
3099 if (cmd->sess->logout_completed)
3100 /* no need to terminate. FW already freed exchange. */
3101 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
3102 else
82de802a 3103 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0);
a6ca8878
AP		 3104 return 0;
3105 }
a6ca8878 3106
22d84726 3107 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3108 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3109 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3110 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3111 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3112
3113 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3114 &full_req_cnt);
3115 if (unlikely(res != 0)) {
2d70c103
NB		 3116 return res;
3117 }
3118
82de802a 3119 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3120
ce1025cd 3121 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3122 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3123 else
60a9eadb 3124 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3125
7c3f8fd1 3126 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3127 /*
3bb67df5 3128 * Either the port is not online or this request was from
b6a029e1
AE		 3129 * previous life, just abort the processing.
3130 */
3131 cmd->state = QLA_TGT_STATE_PROCESSED;
3132 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3133 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3134 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3135 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3136 cmd->reset_count, qpair->chip_reset);
82de802a 3137 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3138 return 0;
3139 }
3140
2d70c103 3141 /* Does F/W have an IOCBs for this request */
82de802a 3142 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3143 if (unlikely(res))
3144 goto out_unmap_unlock;
3145
f83adb61 3146 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3147 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3148 else
82de802a 3149 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3150 if (unlikely(res != 0)) {
82de802a 3151 qpair->req->cnt += full_req_cnt;
2d70c103 3152 goto out_unmap_unlock;
810e30bc 3153 }
2d70c103
NB		 3154
3155 pkt = (struct ctio7_to_24xx *)prm.pkt;
3156
3157 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3158 pkt->u.status0.flags |=
ad950360 3159 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3160 CTIO7_FLAGS_STATUS_MODE_0);
3161
f83adb61 3162 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3163 qlt_load_data_segments(&prm);
2d70c103
NB		 3164
3165 if (prm.add_status_pkt == 0) {
3166 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3167 pkt->u.status0.scsi_status =
3168 cpu_to_le16(prm.rq_result);
3169 pkt->u.status0.residual =
3170 cpu_to_le32(prm.residual);
ad950360 3171 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3172 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3173 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3174 pkt->u.status0.flags |=
ad950360 3175 cpu_to_le16(
2d70c103
NB		 3176 CTIO7_FLAGS_EXPLICIT_CONFORM |
3177 CTIO7_FLAGS_CONFORM_REQ);
3178 }
3179 }
3180
3181 } else {
3182 /*
3183 * We have already made sure that there is sufficient
3184 * amount of request entries to not drop HW lock in
3185 * req_pkt().
3186 */
3187 struct ctio7_to_24xx *ctio =
82de802a
QT		 3188 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3189 qpair->req);
2d70c103 3190
22d84726 3191 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3192 "Building additional status packet 0x%p.\n",
3193 ctio);
2d70c103 3194
f83adb61
QT		 3195 /*
3196 * T10Dif: ctio_crc2_to_fw overlay ontop of
3197 * ctio7_to_24xx
3198 */
2d70c103 3199 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3200 /* reset back to CTIO7 */
2d70c103 3201 ctio->entry_count = 1;
f83adb61 3202 ctio->entry_type = CTIO_TYPE7;
2d70c103 3203 ctio->dseg_count = 0;
ad950360 3204 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3205 CTIO7_FLAGS_DATA_IN);
3206
3207 /* Real finish is ctio_m1's finish */
3208 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3209 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3210 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3211
3212 /* qlt_24xx_init_ctio_to_isp will correct
3213 * all neccessary fields that's part of CTIO7.
3214 * There should be no residual of CTIO-CRC2 data.
3215 */
2d70c103
NB		 3216 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3217 &prm);
2d70c103
NB		 3218 }
3219 } else
3220 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3221
3222
3223 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3224 cmd->cmd_sent_to_fw = 1;
2d70c103 3225
63163e06
HM		 3226 /* Memory Barrier */
3227 wmb();
8abfa9e2
QT		 3228 if (qpair->reqq_start_iocbs)
3229 qpair->reqq_start_iocbs(qpair);
3230 else
3231 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3232 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3233
3234 return 0;
3235
3236out_unmap_unlock:
f9b6721a 3237 qlt_unmap_sg(vha, cmd);
82de802a 3238 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3239
3240 return res;
3241}
3242EXPORT_SYMBOL(qlt_xmit_response);
3243
3244int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3245{
3246 struct ctio7_to_24xx *pkt;
3247 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3248 struct qla_tgt *tgt = cmd->tgt;
3249 struct qla_tgt_prm prm;
82de802a 3250 unsigned long flags = 0;
2d70c103 3251 int res = 0;
82de802a 3252 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3253
3254 memset(&prm, 0, sizeof(prm));
3255 prm.cmd = cmd;
3256 prm.tgt = tgt;
3257 prm.sg = NULL;
3258 prm.req_cnt = 1;
3259
2d70c103
NB		 3260 /* Calculate number of entries and segments required */
3261 if (qlt_pci_map_calc_cnt(&prm) != 0)
3262 return -EAGAIN;
3263
7c3f8fd1 3264 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3265 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3266 /*
3bb67df5 3267 * Either the port is not online or this request was from
b6a029e1
AE		 3268 * previous life, just abort the processing.
3269 */
3270 cmd->state = QLA_TGT_STATE_NEED_DATA;
3271 qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
22d84726 3272 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3273 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3274 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3275 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3276 return 0;
3277 }
3278
82de802a 3279 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3280 /* Does F/W have an IOCBs for this request */
82de802a 3281 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3282 if (res != 0)
3283 goto out_unlock_free_unmap;
f83adb61 3284 if (cmd->se_cmd.prot_op)
82de802a 3285 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3286 else
82de802a 3287 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3288
810e30bc 3289 if (unlikely(res != 0)) {
82de802a 3290 qpair->req->cnt += prm.req_cnt;
2d70c103 3291 goto out_unlock_free_unmap;
810e30bc
QT		 3292 }
3293
2d70c103 3294 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3295 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3296 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3297
3298 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3299 qlt_load_data_segments(&prm);
2d70c103
NB		 3300
3301 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3302 cmd->cmd_sent_to_fw = 1;
2d70c103 3303
63163e06
HM		 3304 /* Memory Barrier */
3305 wmb();
8abfa9e2
QT		 3306 if (qpair->reqq_start_iocbs)
3307 qpair->reqq_start_iocbs(qpair);
3308 else
3309 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3310 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3311
3312 return res;
3313
3314out_unlock_free_unmap:
f9b6721a 3315 qlt_unmap_sg(vha, cmd);
82de802a 3316 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3317
3318 return res;
3319}
3320EXPORT_SYMBOL(qlt_rdy_to_xfer);
3321
f83adb61
QT		 3322
3323/*
be25152c 3324 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3325 */
be25152c 3326static void
8abfa9e2 3327qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3328 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3329{
3330 uint8_t *ap = &sts->actual_dif[0];
3331 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3332 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3333 uint8_t scsi_status, sense_key, asc, ascq;
3334 unsigned long flags;
8abfa9e2 3335 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3336
be25152c 3337 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3338
be25152c
QT		 3339 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3340 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3341 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3342
be25152c
QT		 3343 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3344 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3345 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3346
be25152c
QT		 3347 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3348 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3349
be25152c 3350 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3351
be25152c
QT		 3352 /* check appl tag */
3353 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3354 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3355 "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]",
3356 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3357 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3358 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3359 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3360
3361 cmd->dif_err_code = DIF_ERR_APP;
3362 scsi_status = SAM_STAT_CHECK_CONDITION;
3363 sense_key = ABORTED_COMMAND;
3364 asc = 0x10;
3365 ascq = 0x2;
f83adb61
QT		 3366 }
3367
3368 /* check ref tag */
be25152c 3369 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3370 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3371 "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] ",
3372 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3373 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3374 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3375 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3376
3377 cmd->dif_err_code = DIF_ERR_REF;
3378 scsi_status = SAM_STAT_CHECK_CONDITION;
3379 sense_key = ABORTED_COMMAND;
3380 asc = 0x10;
3381 ascq = 0x3;
f83adb61
QT		 3382 goto out;
3383 }
3384
be25152c
QT		 3385 /* check guard */
3386 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3387 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3388 "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]",
3389 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3390 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3391 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3392 cmd->atio.u.isp24.fcp_hdr.ox_id);
3393
be25152c
QT		 3394 cmd->dif_err_code = DIF_ERR_GRD;
3395 scsi_status = SAM_STAT_CHECK_CONDITION;
3396 sense_key = ABORTED_COMMAND;
3397 asc = 0x10;
3398 ascq = 0x1;
f83adb61
QT		 3399 }
3400out:
be25152c
QT		 3401 switch (cmd->state) {
3402 case QLA_TGT_STATE_NEED_DATA:
3403 /* handle_data will load DIF error code */
3404 cmd->state = QLA_TGT_STATE_DATA_IN;
3405 vha->hw->tgt.tgt_ops->handle_data(cmd);
3406 break;
3407 default:
3408 spin_lock_irqsave(&cmd->cmd_lock, flags);
3409 if (cmd->aborted) {
3410 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3411 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3412 break;
3413 }
3414 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3415
8abfa9e2
QT		 3416 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3417 ascq);
be25152c
QT		 3418 /* assume scsi status gets out on the wire.
3419 * Will not wait for completion.
3420 */
3421 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3422 break;
3423 }
3424}
f83adb61 3425
a6ca8878
AP		 3426/* If hardware_lock held on entry, might drop it, then reaquire */
3427/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3428static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3429 struct imm_ntfy_from_isp *ntfy)
3430{
3431 struct nack_to_isp *nack;
3432 struct qla_hw_data *ha = vha->hw;
3433 request_t *pkt;
3434 int ret = 0;
3435
3436 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3437 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3438
ec7193e2 3439 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3440 if (pkt == NULL) {
3441 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3442 "qla_target(%d): %s failed: unable to allocate "
3443 "request packet\n", vha->vp_idx, __func__);
3444 return -ENOMEM;
3445 }
3446
3447 pkt->entry_type = NOTIFY_ACK_TYPE;
3448 pkt->entry_count = 1;
4f060736 3449 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3450
3451 nack = (struct nack_to_isp *)pkt;
3452 nack->ox_id = ntfy->ox_id;
3453
3454 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3455 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3456 nack->u.isp24.flags = ntfy->u.isp24.flags &
3457 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3458 }
3459
3460 /* terminate */
3461 nack->u.isp24.flags |=
3462 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3463
3464 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3465 nack->u.isp24.status = ntfy->u.isp24.status;
3466 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3467 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3468 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3469 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3470 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3471 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3472
3473 qla2x00_start_iocbs(vha, vha->req);
3474 return ret;
3475}
3476
3477static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3478 struct imm_ntfy_from_isp *imm, int ha_locked)
3479{
3480 unsigned long flags = 0;
3481 int rc;
3482
a6ca8878
AP		 3483 if (ha_locked) {
3484 rc = __qlt_send_term_imm_notif(vha, imm);
3485
3486#if 0 /* Todo */
3487 if (rc == -ENOMEM)
3488 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
91f42b33
BVA		 3489#else
3490 if (rc) {
3491 }
a6ca8878
AP		 3492#endif
3493 goto done;
3494 }
3495
3496 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
3497 rc = __qlt_send_term_imm_notif(vha, imm);
3498
3499#if 0 /* Todo */
3500 if (rc == -ENOMEM)
3501 qlt_alloc_qfull_cmd(vha, imm, 0, 0);
3502#endif
3503
3504done:
3505 if (!ha_locked)
3506 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
3507}
3508
83548fe2
QT		 3509/*
3510 * If hardware_lock held on entry, might drop it, then reaquire
3511 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3512 */
82de802a 3513static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3514 struct qla_tgt_cmd *cmd,
3515 struct atio_from_isp *atio)
3516{
82de802a 3517 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3518 struct ctio7_to_24xx *ctio24;
3519 struct qla_hw_data *ha = vha->hw;
3520 request_t *pkt;
3521 int ret = 0;
33a5fcee 3522 uint16_t temp;
2d70c103 3523
83548fe2 3524 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3525
72fcd4eb
QT		 3526 if (cmd)
3527 vha = cmd->vha;
3528
82de802a 3529 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3530 if (pkt == NULL) {
3531 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3532 "qla_target(%d): %s failed: unable to allocate "
3533 "request packet\n", vha->vp_idx, __func__);
3534 return -ENOMEM;
3535 }
3536
3537 if (cmd != NULL) {
3538 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3539 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3540 "qla_target(%d): Terminating cmd %p with "
3541 "incorrect state %d\n", vha->vp_idx, cmd,
3542 cmd->state);
3543 } else
3544 ret = 1;
3545 }
3546
60a9eadb 3547 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3548 pkt->entry_count = 1;
3549 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3550
3551 ctio24 = (struct ctio7_to_24xx *)pkt;
3552 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3553 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3554 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3555 ctio24->vp_index = vha->vp_idx;
3556 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3557 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3558 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3559 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3560 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3561 CTIO7_FLAGS_TERMINATE;
3562 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3563 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3564 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103
NB		 3565
3566 /* Most likely, it isn't needed */
3567 ctio24->u.status1.residual = get_unaligned((uint32_t *)
3568 &atio->u.isp24.fcp_cmnd.add_cdb[
3569 atio->u.isp24.fcp_cmnd.add_cdb_len]);
3570 if (ctio24->u.status1.residual != 0)
3571 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
3572
63163e06
HM		 3573 /* Memory Barrier */
3574 wmb();
8abfa9e2
QT		 3575 if (qpair->reqq_start_iocbs)
3576 qpair->reqq_start_iocbs(qpair);
3577 else
3578 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3579 return ret;
3580}
3581
82de802a 3582static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3583 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3584 int ul_abort)
2d70c103 3585{
82de802a 3586 struct scsi_qla_host *vha;
6bc85dd5 3587 unsigned long flags = 0;
2d70c103
NB		 3588 int rc;
3589
82de802a
QT		 3590 /* why use different vha? NPIV */
3591 if (cmd)
3592 vha = cmd->vha;
3593 else
3594 vha = qpair->vha;
2d70c103
NB		 3595
3596 if (ha_locked) {
82de802a 3597 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3598 if (rc == -ENOMEM)
3599 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3600 goto done;
3601 }
82de802a
QT		 3602 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3603 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3604 if (rc == -ENOMEM)
3605 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3606
2d70c103 3607done:
a07100e0 3608 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3609 if (cmd->sg_mapped)
3610 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3611 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3612 }
6bc85dd5
HM		 3613
3614 if (!ha_locked)
82de802a 3615 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3616
7b898542 3617 return;
2d70c103
NB		 3618}
3619
33e79977
QT		 3620static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3621{
3622 struct list_head free_list;
3623 struct qla_tgt_cmd *cmd, *tcmd;
3624
3625 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3626 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3627
3628 cmd = tcmd = NULL;
3629 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3630 INIT_LIST_HEAD(&free_list);
3631 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3632
3633 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3634 list_del(&cmd->cmd_list);
3635 /* This cmd was never sent to TCM. There is no need
3636 * to schedule free or call free_cmd
3637 */
3638 qlt_free_cmd(cmd);
3639 vha->hw->tgt.num_qfull_cmds_alloc--;
3640 }
3641 }
3642 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3643}
3644
3645static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3646{
3647 uint32_t total_leaked;
3648
3649 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3650
3651 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3652 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3653
3654 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3655 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3656 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3657
3658 if (IS_P3P_TYPE(vha->hw))
3659 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3660 else
3661 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3662 qla2xxx_wake_dpc(vha);
3663 }
3664
3665}
3666
a07100e0 3667int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3668{
3669 struct qla_tgt *tgt = cmd->tgt;
3670 struct scsi_qla_host *vha = tgt->vha;
3671 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3672 unsigned long flags;
7359df25
AP		 3673
3674 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3675 "qla_target(%d): terminating exchange for aborted cmd=%p "
3676 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3677 se_cmd->tag);
3678
a07100e0
QT		 3679 spin_lock_irqsave(&cmd->cmd_lock, flags);
3680 if (cmd->aborted) {
3681 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3682 /*
3683 * It's normal to see 2 calls in this path:
3684 * 1) XFER Rdy completion + CMD_T_ABORT
3685 * 2) TCM TMR - drain_state_list
3686 */
83548fe2
QT		 3687 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3688 "multiple abort. %p transport_state %x, t_state %x, "
3689 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3690 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3691 return EIO;
3692 }
193b50b9 3693 cmd->aborted = 1;
1eb42f96 3694 cmd->trc_flags |= TRC_ABORT;
a07100e0 3695 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3696
82de802a 3697 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3698 return 0;
7359df25
AP		 3699}
3700EXPORT_SYMBOL(qlt_abort_cmd);
3701
2d70c103
NB		 3702void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3703{
5d964837 3704 struct fc_port *sess = cmd->sess;
51a07f84 3705
f83adb61
QT		 3706 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3707 "%s: se_cmd[%p] ox_id %04x\n",
3708 __func__, &cmd->se_cmd,
3709 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3710
e07f8f65
SK		 3711 BUG_ON(cmd->cmd_in_wq);
3712
a07100e0
QT		 3713 if (cmd->sg_mapped)
3714 qlt_unmap_sg(cmd->vha, cmd);
3715
33e79977
QT		 3716 if (!cmd->q_full)
3717 qlt_decr_num_pend_cmds(cmd->vha);
3718
f83adb61 3719 BUG_ON(cmd->sg_mapped);
e07f8f65 3720 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3721 if (unlikely(cmd->free_sg))
3722 kfree(cmd->sg);
51a07f84
NB		 3723
3724 if (!sess || !sess->se_sess) {
3725 WARN_ON(1);
3726 return;
3727 }
e07f8f65 3728 cmd->jiffies_at_free = get_jiffies_64();
51a07f84 3729 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
2d70c103
NB		 3730}
3731EXPORT_SYMBOL(qlt_free_cmd);
3732
2d70c103
NB		 3733/*
3734 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3735 */
82de802a 3736static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3737 struct qla_tgt_cmd *cmd, uint32_t status)
3738{
3739 int term = 0;
82de802a 3740 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3741
be25152c 3742 if (cmd->se_cmd.prot_op)
83548fe2 3743 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3744 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3745 "se_cmd=%p tag[%x] op %#x/%s",
3746 cmd->lba, cmd->lba,
3747 cmd->num_blks, &cmd->se_cmd,
3748 cmd->atio.u.isp24.exchange_addr,
3749 cmd->se_cmd.prot_op,
3750 prot_op_str(cmd->se_cmd.prot_op));
3751
2d70c103
NB		 3752 if (ctio != NULL) {
3753 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
3754 term = !(c->flags &
ad950360 3755 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3756 } else
3757 term = 1;
3758
3759 if (term)
3efc31f7 3760 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3761
3762 return term;
3763}
3764
2d70c103
NB		 3765
3766/* ha->hardware_lock supposed to be held on entry */
3767static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3768 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103
NB		 3769{
3770 struct qla_tgt_cmd *cmd = NULL;
82de802a
QT		 3771 struct req_que *req;
3772 int qid = GET_QID(handle);
3773 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3774
82de802a
QT		 3775 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3776 return NULL;
2d70c103 3777
82de802a
QT		 3778 if (qid == rsp->req->id) {
3779 req = rsp->req;
3780 } else if (vha->hw->req_q_map[qid]) {
3781 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3782 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3783 vha->vp_idx, rsp->id, handle);
3784 req = vha->hw->req_q_map[qid];
3785 } else {
3786 return NULL;
3787 }
667024a3 3788
82de802a 3789 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3790
82de802a 3791 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3792 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3793 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3794 "qla_target(%d): Wrong handle %x received\n",
3795 vha->vp_idx, handle);
3796 return NULL;
3797 }
82de802a
QT		 3798
3799 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h];
3800 if (unlikely(cmd == NULL)) {
c5419e26 3801 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3802 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3803 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3804 return NULL;
3805 }
82de802a 3806 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3807 } else if (ctio != NULL) {
3808 /* We can't get loop ID from CTIO7 */
3809 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3810 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3811 "support NULL handles\n", vha->vp_idx);
3812 return NULL;
3813 }
3814
3815 return cmd;
3816}
3817
c0cb4496 3818/* hardware_lock should be held by caller. */
c5419e26 3819void
c0cb4496
AE		 3820qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
3821{
3822 struct qla_hw_data *ha = vha->hw;
c0cb4496
AE		 3823
3824 if (cmd->sg_mapped)
3825 qlt_unmap_sg(vha, cmd);
3826
c0cb4496
AE		 3827 /* TODO: fix debug message type and ids. */
3828 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
3829 ql_dbg(ql_dbg_io, vha, 0xff00,
82de802a 3830 "HOST-ABORT: state=PROCESSED.\n");
c0cb4496
AE		 3831 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
3832 cmd->write_data_transferred = 0;
3833 cmd->state = QLA_TGT_STATE_DATA_IN;
3834
3835 ql_dbg(ql_dbg_io, vha, 0xff01,
82de802a 3836 "HOST-ABORT: state=DATA_IN.\n");
c0cb4496
AE		 3837
3838 ha->tgt.tgt_ops->handle_data(cmd);
3839 return;
c0cb4496
AE		 3840 } else {
3841 ql_dbg(ql_dbg_io, vha, 0xff03,
82de802a 3842 "HOST-ABORT: state=BAD(%d).\n",
c0cb4496
AE		 3843 cmd->state);
3844 dump_stack();
3845 }
3846
1eb42f96 3847 cmd->trc_flags |= TRC_FLUSH;
c0cb4496
AE		 3848 ha->tgt.tgt_ops->free_cmd(cmd);
3849}
3850
2d70c103
NB		 3851/*
3852 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3853 */
82de802a
QT		 3854static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3855 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3856{
3857 struct qla_hw_data *ha = vha->hw;
3858 struct se_cmd *se_cmd;
2d70c103 3859 struct qla_tgt_cmd *cmd;
82de802a 3860 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3861
2d70c103
NB		 3862 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3863 /* That could happen only in case of an error/reset/abort */
3864 if (status != CTIO_SUCCESS) {
3865 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3866 "Intermediate CTIO received"
3867 " (status %x)\n", status);
3868 }
3869 return;
3870 }
3871
82de802a 3872 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3873 if (cmd == NULL)
2d70c103 3874 return;
092e1dc3 3875
2d70c103 3876 se_cmd = &cmd->se_cmd;
d564a372 3877 cmd->cmd_sent_to_fw = 0;
2d70c103 3878
f9b6721a 3879 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3880
3881 if (unlikely(status != CTIO_SUCCESS)) {
3882 switch (status & 0xFFFF) {
3883 case CTIO_LIP_RESET:
3884 case CTIO_TARGET_RESET:
3885 case CTIO_ABORTED:
7b898542 3886 /* driver request abort via Terminate exchange */
2d70c103
NB		 3887 case CTIO_TIMEOUT:
3888 case CTIO_INVALID_RX_ID:
3889 /* They are OK */
3890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3891 "qla_target(%d): CTIO with "
3892 "status %#x received, state %x, se_cmd %p, "
3893 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3894 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3895 status, cmd->state, se_cmd);
3896 break;
3897
3898 case CTIO_PORT_LOGGED_OUT:
3899 case CTIO_PORT_UNAVAILABLE:
71cdc079 3900 {
dacb5822
HM		 3901 int logged_out =
3902 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3903
2d70c103 3904 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3905 "qla_target(%d): CTIO with %s status %x "
2d70c103 3906 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3907 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3908 status, cmd->state, se_cmd);
2d70c103 3909
71cdc079
AP		 3910 if (logged_out && cmd->sess) {
3911 /*
3912 * Session is already logged out, but we need
3913 * to notify initiator, who's not aware of this
3914 */
3915 cmd->sess->logout_on_delete = 0;
3916 cmd->sess->send_els_logo = 1;
83548fe2 3917 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3918 "%s %d %8phC post del sess\n",
3919 __func__, __LINE__, cmd->sess->port_name);
3920
d8630bb9 3921 qlt_schedule_sess_for_deletion(cmd->sess);
71cdc079
AP		 3922 }
3923 break;
3924 }
f83adb61
QT		 3925 case CTIO_DIF_ERROR: {
3926 struct ctio_crc_from_fw *crc =
3927 (struct ctio_crc_from_fw *)ctio;
3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3929 "qla_target(%d): CTIO with DIF_ERROR status %x "
3930 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3931 "expect_dif[0x%llx]\n",
f83adb61
QT		 3932 vha->vp_idx, status, cmd->state, se_cmd,
3933 *((u64 *)&crc->actual_dif[0]),
3934 *((u64 *)&crc->expected_dif[0]));
3935
8abfa9e2 3936 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 3937 return;
f83adb61 3938 }
2d70c103
NB		 3939 default:
3940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 3941 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 3942 vha->vp_idx, status, cmd->state, se_cmd);
3943 break;
3944 }
3945
7b898542 3946
193b50b9 3947 /* "cmd->aborted" means
7b898542
QT		 3948 * cmd is already aborted/terminated, we don't
3949 * need to terminate again. The exchange is already
3950 * cleaned up/freed at FW level. Just cleanup at driver
3951 * level.
3952 */
3953 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 3954 (!cmd->aborted)) {
1eb42f96 3955 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 3956 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 3957 return;
7b898542 3958 }
2d70c103
NB		 3959 }
3960
3961 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 3962 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 3963 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 3964 cmd->state = QLA_TGT_STATE_DATA_IN;
3965
52c82823 3966 if (status == CTIO_SUCCESS)
2d70c103
NB		 3967 cmd->write_data_transferred = 1;
3968
2d70c103
NB		 3969 ha->tgt.tgt_ops->handle_data(cmd);
3970 return;
193b50b9 3971 } else if (cmd->aborted) {
1eb42f96 3972 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 3973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 3974 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 3975 } else {
1eb42f96 3976 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 3977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
3978 "qla_target(%d): A command in state (%d) should "
3979 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
3980 }
3981
7b898542 3982 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 3983 !cmd->aborted) {
2d70c103
NB		 3984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
3985 dump_stack();
3986 }
3987
3988 ha->tgt.tgt_ops->free_cmd(cmd);
3989}
3990
2d70c103
NB		 3991static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
3992 uint8_t task_codes)
3993{
3994 int fcp_task_attr;
3995
3996 switch (task_codes) {
3997 case ATIO_SIMPLE_QUEUE:
68d81f40 3998 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 3999 break;
4000 case ATIO_HEAD_OF_QUEUE:
68d81f40 4001 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 4002 break;
4003 case ATIO_ORDERED_QUEUE:
68d81f40 4004 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4005 break;
4006 case ATIO_ACA_QUEUE:
68d81f40 4007 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 4008 break;
4009 case ATIO_UNTAGGED:
68d81f40 4010 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 4011 break;
4012 default:
4013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4014 "qla_target: unknown task code %x, use ORDERED instead\n",
4015 task_codes);
68d81f40 4016 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4017 break;
4018 }
4019
4020 return fcp_task_attr;
4021}
4022
5d964837 4023static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 4024 uint8_t *);
4025/*
4026 * Process context for I/O path into tcm_qla2xxx code
4027 */
51a07f84 4028static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 4029{
2d70c103
NB		 4030 scsi_qla_host_t *vha = cmd->vha;
4031 struct qla_hw_data *ha = vha->hw;
5d964837 4032 struct fc_port *sess = cmd->sess;
2d70c103
NB		 4033 struct atio_from_isp *atio = &cmd->atio;
4034 unsigned char *cdb;
4035 unsigned long flags;
4036 uint32_t data_length;
4037 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4038 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4039
e07f8f65 4040 cmd->cmd_in_wq = 0;
1eb42f96 4041 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4042
193b50b9 4043 if (cmd->aborted) {
8b2f5ff3
SN		 4044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4045 "cmd with tag %u is aborted\n",
4046 cmd->atio.u.isp24.exchange_addr);
4047 goto out_term;
4048 }
4049
a07100e0 4050 spin_lock_init(&cmd->cmd_lock);
2d70c103 4051 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4052 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4053
4054 if (atio->u.isp24.fcp_cmnd.rddata &&
4055 atio->u.isp24.fcp_cmnd.wrdata) {
4056 bidi = 1;
4057 data_dir = DMA_TO_DEVICE;
4058 } else if (atio->u.isp24.fcp_cmnd.rddata)
4059 data_dir = DMA_FROM_DEVICE;
4060 else if (atio->u.isp24.fcp_cmnd.wrdata)
4061 data_dir = DMA_TO_DEVICE;
4062 else
4063 data_dir = DMA_NONE;
4064
4065 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4066 atio->u.isp24.fcp_cmnd.task_attr);
4067 data_length = be32_to_cpu(get_unaligned((uint32_t *)
4068 &atio->u.isp24.fcp_cmnd.add_cdb[
4069 atio->u.isp24.fcp_cmnd.add_cdb_len]));
4070
51a07f84
NB		 4071 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4072 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4073 if (ret != 0)
4074 goto out_term;
4075 /*
4076 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
4077 */
7560151b 4078 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4079 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4080 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4081 return;
4082
4083out_term:
667024a3 4084 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4085 /*
fae9eaf8
RD		 4086 * cmd has not sent to target yet, so pass NULL as the second
4087 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4088 */
1eb42f96 4089 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4090 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4091 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4092
4093 qlt_decr_num_pend_cmds(vha);
51a07f84 4094 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
82de802a 4095 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b
QT		 4096
4097 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4098 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4099 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4100}
4101
4102static void qlt_do_work(struct work_struct *work)
4103{
4104 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4105 scsi_qla_host_t *vha = cmd->vha;
4106 unsigned long flags;
4107
4108 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4109 list_del(&cmd->cmd_list);
4110 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4111
4112 __qlt_do_work(cmd);
4113}
4114
09620eeb
QT		 4115void qlt_clr_qp_table(struct scsi_qla_host *vha)
4116{
4117 unsigned long flags;
4118 struct qla_hw_data *ha = vha->hw;
4119 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4120 void *node;
4121 u64 key = 0;
4122
4123 ql_log(ql_log_info, vha, 0x706c,
4124 "User update Number of Active Qpairs %d\n",
4125 ha->tgt.num_act_qpairs);
4126
4127 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4128
4129 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4130 btree_remove64(&tgt->lun_qpair_map, key);
4131
4132 ha->base_qpair->lun_cnt = 0;
4133 for (key = 0; key < ha->max_qpairs; key++)
4134 if (ha->queue_pair_map[key])
4135 ha->queue_pair_map[key]->lun_cnt = 0;
4136
4137 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4138}
4139
e326d22a
QT		 4140static void qlt_assign_qpair(struct scsi_qla_host *vha,
4141 struct qla_tgt_cmd *cmd)
4142{
4143 struct qla_qpair *qpair, *qp;
4144 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4145 struct qla_qpair_hint *h;
4146
4147 if (vha->flags.qpairs_available) {
4148 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4149 if (unlikely(!h)) {
4150 /* spread lun to qpair ratio evently */
4151 int lcnt = 0, rc;
4152 struct scsi_qla_host *base_vha =
4153 pci_get_drvdata(vha->hw->pdev);
4154
4155 qpair = vha->hw->base_qpair;
4156 if (qpair->lun_cnt == 0) {
4157 qpair->lun_cnt++;
4158 h = qla_qpair_to_hint(tgt, qpair);
4159 BUG_ON(!h);
4160 rc = btree_insert64(&tgt->lun_qpair_map,
4161 cmd->unpacked_lun, h, GFP_ATOMIC);
4162 if (rc) {
4163 qpair->lun_cnt--;
4164 ql_log(ql_log_info, vha, 0xd037,
4165 "Unable to insert lun %llx into lun_qpair_map\n",
4166 cmd->unpacked_lun);
4167 }
4168 goto out;
4169 } else {
4170 lcnt = qpair->lun_cnt;
4171 }
4172
4173 h = NULL;
4174 list_for_each_entry(qp, &base_vha->qp_list,
4175 qp_list_elem) {
4176 if (qp->lun_cnt == 0) {
4177 qp->lun_cnt++;
4178 h = qla_qpair_to_hint(tgt, qp);
4179 BUG_ON(!h);
4180 rc = btree_insert64(&tgt->lun_qpair_map,
4181 cmd->unpacked_lun, h, GFP_ATOMIC);
4182 if (rc) {
4183 qp->lun_cnt--;
4184 ql_log(ql_log_info, vha, 0xd038,
4185 "Unable to insert lun %llx into lun_qpair_map\n",
4186 cmd->unpacked_lun);
4187 }
4188 qpair = qp;
4189 goto out;
4190 } else {
4191 if (qp->lun_cnt < lcnt) {
4192 lcnt = qp->lun_cnt;
4193 qpair = qp;
4194 continue;
4195 }
4196 }
4197 }
4198 BUG_ON(!qpair);
4199 qpair->lun_cnt++;
4200 h = qla_qpair_to_hint(tgt, qpair);
4201 BUG_ON(!h);
4202 rc = btree_insert64(&tgt->lun_qpair_map,
4203 cmd->unpacked_lun, h, GFP_ATOMIC);
4204 if (rc) {
4205 qpair->lun_cnt--;
4206 ql_log(ql_log_info, vha, 0xd039,
4207 "Unable to insert lun %llx into lun_qpair_map\n",
4208 cmd->unpacked_lun);
4209 }
4210 }
4211 } else {
4212 h = &tgt->qphints[0];
4213 }
4214out:
4215 cmd->qpair = h->qpair;
4216 cmd->se_cmd.cpuid = h->cpuid;
4217}
4218
51a07f84 4219static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4220 struct fc_port *sess,
51a07f84
NB		 4221 struct atio_from_isp *atio)
4222{
4223 struct se_session *se_sess = sess->se_sess;
4224 struct qla_tgt_cmd *cmd;
4225 int tag;
4226
4227 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
4228 if (tag < 0)
4229 return NULL;
4230
4231 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4232 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4233 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4234 memcpy(&cmd->atio, atio, sizeof(*atio));
4235 cmd->state = QLA_TGT_STATE_NEW;
4236 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4237 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4238 cmd->vha = vha;
4239 cmd->se_cmd.map_tag = tag;
4240 cmd->sess = sess;
4241 cmd->loop_id = sess->loop_id;
4242 cmd->conf_compl_supported = sess->conf_compl_supported;
4243
1eb42f96 4244 cmd->trc_flags = 0;
9fce1254
KS		 4245 cmd->jiffies_at_alloc = get_jiffies_64();
4246
e326d22a
QT		 4247 cmd->unpacked_lun = scsilun_to_int(
4248 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4249 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4250 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4251 cmd->vp_idx = vha->vp_idx;
9fce1254 4252
51a07f84
NB		 4253 return cmd;
4254}
4255
2d70c103
NB		 4256/* ha->hardware_lock supposed to be held on entry */
4257static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4258 struct atio_from_isp *atio)
4259{
51a07f84 4260 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4261 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4262 struct fc_port *sess;
2d70c103 4263 struct qla_tgt_cmd *cmd;
5d964837 4264 unsigned long flags;
a4239945 4265 port_id_t id;
2d70c103
NB		 4266
4267 if (unlikely(tgt->tgt_stop)) {
667024a3 4268 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103 4269 "New command while device %p is shutting down\n", tgt);
7cf95f7e 4270 return -ENODEV;
2d70c103
NB		 4271 }
4272
a4239945
QT		 4273 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4274 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4275 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4276 if (IS_SW_RESV_ADDR(id))
4277 return -EBUSY;
4278
51a07f84 4279 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
fb35265b
QT		 4280 if (unlikely(!sess))
4281 return -EFAULT;
e52a8b45
AP		 4282
4283 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4284 * session deletion, but it's still in sess_del_work wq */
726b8548 4285 if (sess->deleted) {
83548fe2 4286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4287 "New command while old session %p is being deleted\n",
4288 sess);
4289 return -EFAULT;
4290 }
4291
51a07f84
NB		 4292 /*
4293 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4294 */
726b8548 4295 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4296 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4297 "%s: kref_get fail, %8phC oxid %x \n",
4298 __func__, sess->port_name,
4299 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4300 return -EFAULT;
4301 }
51a07f84
NB		 4302
4303 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4304 if (!cmd) {
667024a3 4305 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4306 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4307 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4308 ha->tgt.tgt_ops->put_sess(sess);
4309 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
7cf95f7e 4310 return -EBUSY;
2d70c103
NB		 4311 }
4312
e07f8f65 4313 cmd->cmd_in_wq = 1;
1eb42f96 4314 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4315
726b8548 4316 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4317 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4318 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4319
2d70c103 4320 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4321 if (vha->flags.qpairs_available) {
4322 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4323 } else if (ha->msix_count) {
fb3269ba
QT		 4324 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4325 queue_work_on(smp_processor_id(), qla_tgt_wq,
4326 &cmd->work);
4327 else
4328 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4329 &cmd->work);
4330 } else {
4331 queue_work(qla_tgt_wq, &cmd->work);
4332 }
2d70c103 4333
82de802a 4334 return 0;
2d70c103
NB		 4335}
4336
4337/* ha->hardware_lock supposed to be held on entry */
5d964837 4338static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4339 int fn, void *iocb, int flags)
4340{
4341 struct scsi_qla_host *vha = sess->vha;
4342 struct qla_hw_data *ha = vha->hw;
4343 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4344 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
2d70c103 4345 int res;
2d70c103
NB		 4346
4347 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4348 if (!mcmd) {
4349 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4350 "qla_target(%d): Allocation of management "
4351 "command failed, some commands and their data could "
4352 "leak\n", vha->vp_idx);
4353 return -ENOMEM;
4354 }
4355 memset(mcmd, 0, sizeof(*mcmd));
4356 mcmd->sess = sess;
4357
4358 if (iocb) {
4359 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4360 sizeof(mcmd->orig_iocb.imm_ntfy));
4361 }
4362 mcmd->tmr_func = fn;
4363 mcmd->flags = flags;
7c3f8fd1 4364 mcmd->reset_count = ha->base_qpair->chip_reset;
82de802a 4365 mcmd->qpair = ha->base_qpair;
72fcd4eb 4366 mcmd->vha = vha;
2d70c103
NB		 4367
4368 switch (fn) {
2d70c103 4369 case QLA_TGT_LUN_RESET:
be92fc3f
QT		 4370 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
4371 break;
2d70c103
NB		 4372 }
4373
be92fc3f 4374 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0);
2d70c103
NB		 4375 if (res != 0) {
4376 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
4377 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
4378 sess->vha->vp_idx, res);
4379 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4380 return -EFAULT;
4381 }
4382
4383 return 0;
4384}
4385
4386/* ha->hardware_lock supposed to be held on entry */
4387static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4388{
4389 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4390 struct qla_hw_data *ha = vha->hw;
5d964837 4391 struct fc_port *sess;
f775bd14 4392 u64 unpacked_lun;
52c82823 4393 int fn;
7560151b 4394 unsigned long flags;
2d70c103 4395
2d70c103 4396 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4397
4398 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4399 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4400 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4401 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4402
f775bd14
QT		 4403 unpacked_lun =
4404 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103 4405
fb35265b 4406 if (sess == NULL || sess->deleted)
e52a8b45
AP		 4407 return -EFAULT;
4408
2d70c103
NB		 4409 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4410}
4411
4412/* ha->hardware_lock supposed to be held on entry */
4413static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4414 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4415{
4416 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4417 struct qla_hw_data *ha = vha->hw;
4418 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4419 u64 unpacked_lun;
2d70c103
NB		 4420 int rc;
4421
4422 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4423 if (mcmd == NULL) {
4424 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4425 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4426 vha->vp_idx, __func__);
4427 return -ENOMEM;
4428 }
4429 memset(mcmd, 0, sizeof(*mcmd));
4430
4431 mcmd->sess = sess;
4432 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4433 sizeof(mcmd->orig_iocb.imm_ntfy));
4434
f775bd14
QT		 4435 unpacked_lun =
4436 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4437 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4438 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4439 mcmd->qpair = ha->base_qpair;
2d70c103 4440
be92fc3f 4441 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4442 le16_to_cpu(iocb->u.isp2x.seq_id));
4443 if (rc != 0) {
4444 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4445 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4446 vha->vp_idx, rc);
4447 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4448 return -EFAULT;
4449 }
4450
4451 return 0;
4452}
4453
4454/* ha->hardware_lock supposed to be held on entry */
4455static int qlt_abort_task(struct scsi_qla_host *vha,
4456 struct imm_ntfy_from_isp *iocb)
4457{
4458 struct qla_hw_data *ha = vha->hw;
5d964837 4459 struct fc_port *sess;
2d70c103 4460 int loop_id;
7560151b 4461 unsigned long flags;
2d70c103
NB		 4462
4463 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4464
7560151b 4465 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4466 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4467 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4468
2d70c103
NB		 4469 if (sess == NULL) {
4470 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4471 "qla_target(%d): task abort for unexisting "
4472 "session\n", vha->vp_idx);
0e8cd71c 4473 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4474 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4475 }
4476
4477 return __qlt_abort_task(vha, iocb, sess);
4478}
4479
a6ca8878
AP		 4480void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4481{
726b8548
QT		 4482 if (rc != MBS_COMMAND_COMPLETE) {
4483 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4484 "%s: se_sess %p / sess %p from"
4485 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4486 " LOGO failed: %#x\n",
4487 __func__,
4488 fcport->se_sess,
4489 fcport,
4490 fcport->port_name, fcport->loop_id,
4491 fcport->d_id.b.domain, fcport->d_id.b.area,
4492 fcport->d_id.b.al_pa, rc);
4493 }
4494
4495 fcport->logout_completed = 1;
a6ca8878
AP		 4496}
4497
a6ca8878
AP		 4498/*
4499* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4500*
4501* Schedules sessions with matching port_id/loop_id but different wwn for
4502* deletion. Returns existing session with matching wwn if present.
4503* Null otherwise.
4504*/
726b8548
QT		 4505struct fc_port *
4506qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4507 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4508{
5d964837 4509 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4510 uint64_t other_wwn;
4511
b7bd104e
AP		 4512 *conflict_sess = NULL;
4513
5d964837 4514 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4515
4516 other_wwn = wwn_to_u64(other_sess->port_name);
4517
4518 if (wwn == other_wwn) {
4519 WARN_ON(sess);
4520 sess = other_sess;
4521 continue;
4522 }
4523
4524 /* find other sess with nport_id collision */
37cacc0a 4525 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4526 if (loop_id != other_sess->loop_id) {
726b8548 4527 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4528 "Invalidating sess %p loop_id %d wwn %llx.\n",
4529 other_sess, other_sess->loop_id, other_wwn);
4530
4531 /*
4532 * logout_on_delete is set by default, but another
4533 * session that has the same s_id/loop_id combo
4534 * might have cleared it when requested this session
4535 * deletion, so don't touch it
4536 */
94cff6e1 4537 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4538 } else {
4539 /*
4540 * Another wwn used to have our s_id/loop_id
b7bd104e 4541 * kill the session, but don't free the loop_id
a6ca8878 4542 */
83548fe2 4543 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4544 "Invalidating sess %p loop_id %d wwn %llx.\n",
4545 other_sess, other_sess->loop_id, other_wwn);
4546
b7bd104e 4547 other_sess->keep_nport_handle = 1;
ba743f91
QT		 4548 if (other_sess->disc_state != DSC_DELETED)
4549 *conflict_sess = other_sess;
94cff6e1 4550 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4551 }
4552 continue;
4553 }
4554
4555 /* find other sess with nport handle collision */
726b8548
QT		 4556 if ((loop_id == other_sess->loop_id) &&
4557 (loop_id != FC_NO_LOOP_ID)) {
4558 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4559 "Invalidating sess %p loop_id %d wwn %llx.\n",
4560 other_sess, other_sess->loop_id, other_wwn);
4561
4562 /* Same loop_id but different s_id
4563 * Ok to kill and logout */
94cff6e1 4564 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4565 }
4566 }
4567
4568 return sess;
4569}
4570
daddf5cf
AP		 4571/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4572static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4573{
4574 struct qla_tgt_sess_op *op;
4575 struct qla_tgt_cmd *cmd;
4576 uint32_t key;
4577 int count = 0;
8b631d87 4578 unsigned long flags;
daddf5cf
AP		 4579
4580 key = (((u32)s_id->b.domain << 16) |
4581 ((u32)s_id->b.area << 8) |
4582 ((u32)s_id->b.al_pa));
4583
8b631d87 4584 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4585 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4586 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4587
daddf5cf
AP		 4588 if (op_key == key) {
4589 op->aborted = true;
4590 count++;
4591 }
4592 }
41dc529a
QT		 4593
4594 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4595 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
4596 if (op_key == key) {
4597 op->aborted = true;
4598 count++;
4599 }
4600 }
4601
daddf5cf
AP		 4602 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4603 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
4604 if (cmd_key == key) {
193b50b9 4605 cmd->aborted = 1;
daddf5cf
AP		 4606 count++;
4607 }
4608 }
8b631d87 4609 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4610
4611 return count;
4612}
4613
9cd883f0
QT		 4614static int qlt_handle_login(struct scsi_qla_host *vha,
4615 struct imm_ntfy_from_isp *iocb)
4616{
4617 struct fc_port *sess = NULL, *conflict_sess = NULL;
4618 uint64_t wwn;
4619 port_id_t port_id;
4620 uint16_t loop_id, wd3_lo;
4621 int res = 0;
4622 struct qlt_plogi_ack_t *pla;
4623 unsigned long flags;
4624
4625 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4626
4627 port_id.b.domain = iocb->u.isp24.port_id[2];
4628 port_id.b.area = iocb->u.isp24.port_id[1];
4629 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4630 port_id.b.rsvd_1 = 0;
4631
4632 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4633
4634 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4635 abort_cmds_for_s_id(vha, &port_id);
4636
4637 if (wwn) {
4638 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4639 sess = qlt_find_sess_invalidate_other(vha, wwn,
4640 port_id, loop_id, &conflict_sess);
4641 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
4642 }
4643
4644 if (IS_SW_RESV_ADDR(port_id)) {
4645 res = 1;
4646 goto out;
4647 }
4648
4649 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4650 if (!pla) {
4651 qlt_send_term_imm_notif(vha, iocb, 1);
4652 goto out;
4653 }
4654
4655 if (conflict_sess) {
4656 conflict_sess->login_gen++;
4657 qlt_plogi_ack_link(vha, pla, conflict_sess,
4658 QLT_PLOGI_LINK_CONFLICT);
4659 }
4660
4661 if (!sess) {
4662 pla->ref_count++;
4663 ql_dbg(ql_dbg_disc, vha, 0xffff,
4664 "%s %d %8phC post new sess\n",
4665 __func__, __LINE__, iocb->u.isp24.port_name);
a4239945
QT		 4666 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4667 qla24xx_post_newsess_work(vha, &port_id,
4668 iocb->u.isp24.port_name,
4669 iocb->u.isp24.u.plogi.node_name,
4670 pla, FC4_TYPE_UNKNOWN);
4671 else
4672 qla24xx_post_newsess_work(vha, &port_id,
4673 iocb->u.isp24.port_name, NULL,
4674 pla, FC4_TYPE_UNKNOWN);
4675
9cd883f0
QT		 4676 goto out;
4677 }
4678
4679 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4680 sess->d_id = port_id;
4681 sess->login_gen++;
4682
4683 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4684 sess->fw_login_state = DSC_LS_PRLI_PEND;
4685 sess->local = 0;
4686 sess->loop_id = loop_id;
4687 sess->d_id = port_id;
4688 sess->fw_login_state = DSC_LS_PRLI_PEND;
4689 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4690
4691 if (wd3_lo & BIT_7)
4692 sess->conf_compl_supported = 1;
4693
4694 if ((wd3_lo & BIT_4) == 0)
4695 sess->port_type = FCT_INITIATOR;
4696 else
4697 sess->port_type = FCT_TARGET;
4698
4699 } else
4700 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4701
4702
4703 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4704 "%s %d %8phC DS %d\n",
4705 __func__, __LINE__, sess->port_name, sess->disc_state);
4706
4707 switch (sess->disc_state) {
4708 case DSC_DELETED:
4709 qlt_plogi_ack_unref(vha, pla);
4710 break;
4711
4712 default:
4713 /*
4714 * Under normal circumstances we want to release nport handle
4715 * during LOGO process to avoid nport handle leaks inside FW.
4716 * The exception is when LOGO is done while another PLOGI with
4717 * the same nport handle is waiting as might be the case here.
4718 * Note: there is always a possibily of a race where session
4719 * deletion has already started for other reasons (e.g. ACL
4720 * removal) and now PLOGI arrives:
4721 * 1. if PLOGI arrived in FW after nport handle has been freed,
4722 * FW must have assigned this PLOGI a new/same handle and we
4723 * can proceed ACK'ing it as usual when session deletion
4724 * completes.
4725 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4726 * bit reached it, the handle has now been released. We'll
4727 * get an error when we ACK this PLOGI. Nothing will be sent
4728 * back to initiator. Initiator should eventually retry
4729 * PLOGI and situation will correct itself.
4730 */
4731 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4732 (sess->d_id.b24 == port_id.b24));
4733
4734 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4735 "%s %d %8phC post del sess\n",
4736 __func__, __LINE__, sess->port_name);
4737
4738
d8630bb9 4739 qlt_schedule_sess_for_deletion(sess);
9cd883f0
QT		 4740 break;
4741 }
4742out:
4743 return res;
4744}
4745
2d70c103
NB		 4746/*
4747 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4748 */
4749static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4750 struct imm_ntfy_from_isp *iocb)
4751{
a6ca8878 4752 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4753 struct qla_hw_data *ha = vha->hw;
5d964837 4754 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4755 uint64_t wwn;
4756 port_id_t port_id;
4757 uint16_t loop_id;
4758 uint16_t wd3_lo;
2d70c103 4759 int res = 0;
9cd883f0 4760 unsigned long flags;
2d70c103 4761
a6ca8878
AP		 4762 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4763
4764 port_id.b.domain = iocb->u.isp24.port_id[2];
4765 port_id.b.area = iocb->u.isp24.port_id[1];
4766 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4767 port_id.b.rsvd_1 = 0;
4768
4769 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4770
726b8548
QT		 4771 ql_dbg(ql_dbg_disc, vha, 0xf026,
4772 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4773 vha->vp_idx, iocb->u.isp24.port_id[2],
4774 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4775 iocb->u.isp24.status_subcode, loop_id,
4776 iocb->u.isp24.port_name);
2d70c103 4777
a6ca8878
AP		 4778 /* res = 1 means ack at the end of thread
4779 * res = 0 means ack async/later.
4780 */
2d70c103
NB		 4781 switch (iocb->u.isp24.status_subcode) {
4782 case ELS_PLOGI:
9cd883f0
QT		 4783 res = qlt_handle_login(vha, iocb);
4784 break;
a6ca8878 4785
9cd883f0
QT		 4786 case ELS_PRLI:
4787 if (N2N_TOPO(ha)) {
4788 sess = qla2x00_find_fcport_by_wwpn(vha,
4789 iocb->u.isp24.port_name, 1);
726b8548 4790
9cd883f0
QT		 4791 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4792 ql_dbg(ql_dbg_disc, vha, 0xffff,
4793 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4794 __func__, __LINE__,
4795 iocb->u.isp24.port_name);
4796 qlt_send_term_imm_notif(vha, iocb, 1);
4797 break;
4798 }
726b8548 4799
9cd883f0 4800 res = qlt_handle_login(vha, iocb);
726b8548
QT		 4801 break;
4802 }
4803
a4239945
QT		 4804 if (IS_SW_RESV_ADDR(port_id)) {
4805 res = 1;
4806 break;
4807 }
4808
a6ca8878
AP		 4809 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4810
7560151b
QT		 4811 if (wwn) {
4812 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4813 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4814 loop_id, &conflict_sess);
7560151b
QT		 4815 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4816 }
b7bd104e
AP		 4817
4818 if (conflict_sess) {
5ef696aa
QT		 4819 switch (conflict_sess->disc_state) {
4820 case DSC_DELETED:
4821 case DSC_DELETE_PEND:
4822 break;
4823 default:
4824 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4825 "PRLI with conflicting sess %p port %8phC\n",
4826 conflict_sess, conflict_sess->port_name);
4827 conflict_sess->fw_login_state =
4828 DSC_LS_PORT_UNAVAIL;
4829 qlt_send_term_imm_notif(vha, iocb, 1);
4830 res = 0;
4831 break;
4832 }
b7bd104e 4833 }
a6ca8878
AP		 4834
4835 if (sess != NULL) {
a4239945 4836 bool delete = false;
82abdcaf
QT		 4837 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4838 switch (sess->fw_login_state) {
a4239945 4839 case DSC_LS_PLOGI_PEND:
82abdcaf
QT		 4840 case DSC_LS_PLOGI_COMP:
4841 case DSC_LS_PRLI_COMP:
4842 break;
4843 default:
a4239945
QT		 4844 delete = true;
4845 break;
4846 }
4847
4848 switch (sess->disc_state) {
4849 case DSC_LOGIN_PEND:
4850 case DSC_GPDB:
4851 case DSC_GPSC:
4852 case DSC_UPD_FCPORT:
4853 case DSC_LOGIN_COMPLETE:
4854 case DSC_ADISC:
4855 delete = false;
4856 break;
4857 default:
4858 break;
4859 }
4860
4861 if (delete) {
82abdcaf
QT		 4862 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4863 flags);
a6ca8878
AP		 4864 /*
4865 * Impatient initiator sent PRLI before last
4866 * PLOGI could finish. Will force him to re-try,
4867 * while last one finishes.
4868 */
df673274 4869 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4870 "sess %p PRLI received, before plogi ack.\n",
4871 sess);
4872 qlt_send_term_imm_notif(vha, iocb, 1);
4873 res = 0;
82abdcaf
QT		 4874 spin_lock_irqsave(&tgt->ha->tgt.sess_lock,
4875 flags);
a6ca8878
AP		 4876 break;
4877 }
4878
4879 /*
4880 * This shouldn't happen under normal circumstances,
4881 * since we have deleted the old session during PLOGI
4882 */
df673274 4883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 4884 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
4885 sess->loop_id, sess, iocb->u.isp24.nport_handle);
4886
4887 sess->local = 0;
4888 sess->loop_id = loop_id;
37cacc0a 4889 sess->d_id = port_id;
726b8548 4890 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 4891
4892 if (wd3_lo & BIT_7)
4893 sess->conf_compl_supported = 1;
4894
726b8548
QT		 4895 if ((wd3_lo & BIT_4) == 0)
4896 sess->port_type = FCT_INITIATOR;
4897 else
4898 sess->port_type = FCT_TARGET;
82abdcaf
QT		 4899
4900 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
df673274
AP		 4901 }
4902 res = 1; /* send notify ack */
4903
4904 /* Make session global (not used in fabric mode) */
4905 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 4906 if (sess) {
83548fe2 4907 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 4908 "%s %d %8phC post nack\n",
4909 __func__, __LINE__, sess->port_name);
4910 qla24xx_post_nack_work(vha, sess, iocb,
4911 SRB_NACK_PRLI);
4912 res = 0;
4913 } else {
4914 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
4915 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
4916 qla2xxx_wake_dpc(vha);
4917 }
a6ca8878 4918 } else {
726b8548 4919 if (sess) {
83548fe2 4920 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 4921 "%s %d %8phC post nack\n",
4922 __func__, __LINE__, sess->port_name);
726b8548
QT		 4923 qla24xx_post_nack_work(vha, sess, iocb,
4924 SRB_NACK_PRLI);
4925 res = 0;
4926 }
4927 }
a6ca8878
AP		 4928 break;
4929
41dc529a
QT		 4930 case ELS_TPRLO:
4931 if (le16_to_cpu(iocb->u.isp24.flags) &
4932 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
4933 loop_id = 0xFFFF;
4934 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
4935 res = 1;
4936 break;
4937 }
81881861 4938 /* fall through */
2d70c103
NB		 4939 case ELS_LOGO:
4940 case ELS_PRLO:
726b8548
QT		 4941 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4942 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
4943 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4944
4945 if (sess) {
4946 sess->login_gen++;
4947 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 4948 sess->logo_ack_needed = 1;
4949 memcpy(sess->iocb, iocb, IOCB_SIZE);
4950 }
4951
2d70c103 4952 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 4953
83548fe2 4954 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 4955 "%s: logo %llx res %d sess %p ",
4956 __func__, wwn, res, sess);
4957 if (res == 0) {
41dc529a
QT		 4958 /*
4959 * cmd went upper layer, look for qlt_xmit_tm_rsp()
4960 * for LOGO_ACK & sess delete
4961 */
726b8548
QT		 4962 BUG_ON(!sess);
4963 res = 0;
4964 } else {
41dc529a 4965 /* cmd did not go to upper layer. */
726b8548 4966 if (sess) {
d8630bb9 4967 qlt_schedule_sess_for_deletion(sess);
726b8548
QT		 4968 res = 0;
4969 }
4970 /* else logo will be ack */
4971 }
2d70c103
NB		 4972 break;
4973 case ELS_PDISC:
4974 case ELS_ADISC:
4975 {
0e8cd71c 4976 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 4977 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 4978 qlt_send_notify_ack(ha->base_qpair,
4979 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 4980 tgt->link_reinit_iocb_pending = 0;
4981 }
726b8548
QT		 4982
4983 sess = qla2x00_find_fcport_by_wwpn(vha,
4984 iocb->u.isp24.port_name, 1);
4985 if (sess) {
83548fe2 4986 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 4987 "sess %p lid %d|%d DS %d LS %d\n",
4988 sess, sess->loop_id, loop_id,
4989 sess->disc_state, sess->fw_login_state);
4990 }
4991
2d70c103
NB		 4992 res = 1; /* send notify ack */
4993 break;
4994 }
4995
a6ca8878 4996 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 4997 default:
4998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
4999 "qla_target(%d): Unsupported ELS command %x "
5000 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5001 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5002 break;
5003 }
5004
9cd883f0
QT		 5005 ql_dbg(ql_dbg_disc, vha, 0xf026,
5006 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5007 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5008
2d70c103
NB		 5009 return res;
5010}
5011
2d70c103
NB		 5012/*
5013 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5014 */
5015static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5016 struct imm_ntfy_from_isp *iocb)
5017{
5018 struct qla_hw_data *ha = vha->hw;
5019 uint32_t add_flags = 0;
5020 int send_notify_ack = 1;
5021 uint16_t status;
5022
5023 status = le16_to_cpu(iocb->u.isp2x.status);
5024 switch (status) {
5025 case IMM_NTFY_LIP_RESET:
5026 {
5027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5028 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5029 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5030 iocb->u.isp24.status_subcode);
5031
5032 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5033 send_notify_ack = 0;
5034 break;
5035 }
5036
5037 case IMM_NTFY_LIP_LINK_REINIT:
5038 {
0e8cd71c 5039 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5041 "qla_target(%d): LINK REINIT (loop %#x, "
5042 "subcode %x)\n", vha->vp_idx,
5043 le16_to_cpu(iocb->u.isp24.nport_handle),
5044 iocb->u.isp24.status_subcode);
5045 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5046 qlt_send_notify_ack(ha->base_qpair,
5047 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5048 }
5049 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5050 tgt->link_reinit_iocb_pending = 1;
5051 /*
5052 * QLogic requires to wait after LINK REINIT for possible
5053 * PDISC or ADISC ELS commands
5054 */
5055 send_notify_ack = 0;
5056 break;
5057 }
5058
5059 case IMM_NTFY_PORT_LOGOUT:
5060 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5061 "qla_target(%d): Port logout (loop "
5062 "%#x, subcode %x)\n", vha->vp_idx,
5063 le16_to_cpu(iocb->u.isp24.nport_handle),
5064 iocb->u.isp24.status_subcode);
5065
5066 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5067 send_notify_ack = 0;
5068 /* The sessions will be cleared in the callback, if needed */
5069 break;
5070
5071 case IMM_NTFY_GLBL_TPRLO:
5072 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5073 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5074 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5075 send_notify_ack = 0;
5076 /* The sessions will be cleared in the callback, if needed */
5077 break;
5078
5079 case IMM_NTFY_PORT_CONFIG:
5080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5081 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5082 status);
5083 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5084 send_notify_ack = 0;
5085 /* The sessions will be cleared in the callback, if needed */
5086 break;
5087
5088 case IMM_NTFY_GLBL_LOGO:
5089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5090 "qla_target(%d): Link failure detected\n",
5091 vha->vp_idx);
5092 /* I_T nexus loss */
5093 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5094 send_notify_ack = 0;
5095 break;
5096
5097 case IMM_NTFY_IOCB_OVERFLOW:
5098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5099 "qla_target(%d): Cannot provide requested "
5100 "capability (IOCB overflowed the immediate notify "
5101 "resource count)\n", vha->vp_idx);
5102 break;
5103
5104 case IMM_NTFY_ABORT_TASK:
5105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5106 "qla_target(%d): Abort Task (S %08x I %#x -> "
5107 "L %#x)\n", vha->vp_idx,
5108 le16_to_cpu(iocb->u.isp2x.seq_id),
5109 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5110 le16_to_cpu(iocb->u.isp2x.lun));
5111 if (qlt_abort_task(vha, iocb) == 0)
5112 send_notify_ack = 0;
5113 break;
5114
5115 case IMM_NTFY_RESOURCE:
5116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5117 "qla_target(%d): Out of resources, host %ld\n",
5118 vha->vp_idx, vha->host_no);
5119 break;
5120
5121 case IMM_NTFY_MSG_RX:
5122 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5123 "qla_target(%d): Immediate notify task %x\n",
5124 vha->vp_idx, iocb->u.isp2x.task_flags);
5125 if (qlt_handle_task_mgmt(vha, iocb) == 0)
5126 send_notify_ack = 0;
5127 break;
5128
5129 case IMM_NTFY_ELS:
5130 if (qlt_24xx_handle_els(vha, iocb) == 0)
5131 send_notify_ack = 0;
5132 break;
2d70c103
NB		 5133 default:
5134 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5135 "qla_target(%d): Received unknown immediate "
5136 "notify status %x\n", vha->vp_idx, status);
5137 break;
5138 }
5139
5140 if (send_notify_ack)
82de802a
QT		 5141 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5142 0, 0);
2d70c103
NB		 5143}
5144
5145/*
5146 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5147 * This function sends busy to ISP 2xxx or 24xx.
5148 */
82de802a 5149static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5150 struct atio_from_isp *atio, uint16_t status)
5151{
82de802a 5152 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5153 struct ctio7_to_24xx *ctio24;
5154 struct qla_hw_data *ha = vha->hw;
5155 request_t *pkt;
5d964837 5156 struct fc_port *sess = NULL;
7560151b 5157 unsigned long flags;
f7e761f5 5158 u16 temp;
2d70c103 5159
7560151b 5160 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 5161 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5162 atio->u.isp24.fcp_hdr.s_id);
7560151b 5163 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5164 if (!sess) {
82de802a 5165 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5166 return 0;
2d70c103
NB		 5167 }
5168 /* Sending marker isn't necessary, since we called from ISR */
5169
82de802a 5170 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5171 if (!pkt) {
667024a3 5172 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5173 "qla_target(%d): %s failed: unable to allocate "
5174 "request packet", vha->vp_idx, __func__);
33e79977 5175 return -ENOMEM;
2d70c103
NB		 5176 }
5177
60a9eadb 5178 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5179 pkt->entry_count = 1;
5180 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5181
5182 ctio24 = (struct ctio7_to_24xx *)pkt;
5183 ctio24->entry_type = CTIO_TYPE7;
5184 ctio24->nport_handle = sess->loop_id;
ad950360 5185 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5186 ctio24->vp_index = vha->vp_idx;
5187 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5188 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5189 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5190 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5191 temp = (atio->u.isp24.attr << 9) |
2d70c103 5192 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5193 CTIO7_FLAGS_DONT_RET_CTIO;
5194 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5195 /*
5196 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5197 * if the explicit conformation is used.
5198 */
5199 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5200 ctio24->u.status1.scsi_status = cpu_to_le16(status);
63163e06
HM		 5201 /* Memory Barrier */
5202 wmb();
8abfa9e2
QT		 5203 if (qpair->reqq_start_iocbs)
5204 qpair->reqq_start_iocbs(qpair);
5205 else
5206 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5207 return 0;
5208}
5209
5210/*
5211 * This routine is used to allocate a command for either a QFull condition
5212 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5213 * out previously.
5214 */
5215static void
5216qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5217 struct atio_from_isp *atio, uint16_t status, int qfull)
5218{
5219 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5220 struct qla_hw_data *ha = vha->hw;
5d964837 5221 struct fc_port *sess;
33e79977
QT		 5222 struct se_session *se_sess;
5223 struct qla_tgt_cmd *cmd;
5224 int tag;
82de802a 5225 unsigned long flags;
33e79977
QT		 5226
5227 if (unlikely(tgt->tgt_stop)) {
5228 ql_dbg(ql_dbg_io, vha, 0x300a,
5229 "New command while device %p is shutting down\n", tgt);
5230 return;
5231 }
5232
5233 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5234 vha->hw->tgt.num_qfull_cmds_dropped++;
5235 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5236 vha->qla_stats.stat_max_qfull_cmds_dropped)
5237 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5238 vha->hw->tgt.num_qfull_cmds_dropped;
5239
5240 ql_dbg(ql_dbg_io, vha, 0x3068,
5241 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5242 vha->vp_idx, __func__,
5243 vha->hw->tgt.num_qfull_cmds_dropped);
5244
5245 qlt_chk_exch_leak_thresh_hold(vha);
5246 return;
5247 }
5248
5249 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5250 (vha, atio->u.isp24.fcp_hdr.s_id);
5251 if (!sess)
5252 return;
5253
5254 se_sess = sess->se_sess;
5255
5256 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
5257 if (tag < 0)
5258 return;
5259
5260 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
5261 if (!cmd) {
5262 ql_dbg(ql_dbg_io, vha, 0x3009,
5263 "qla_target(%d): %s: Allocation of cmd failed\n",
5264 vha->vp_idx, __func__);
5265
5266 vha->hw->tgt.num_qfull_cmds_dropped++;
5267 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5268 vha->qla_stats.stat_max_qfull_cmds_dropped)
5269 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5270 vha->hw->tgt.num_qfull_cmds_dropped;
5271
5272 qlt_chk_exch_leak_thresh_hold(vha);
5273 return;
5274 }
5275
5276 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5277
5278 qlt_incr_num_pend_cmds(vha);
5279 INIT_LIST_HEAD(&cmd->cmd_list);
5280 memcpy(&cmd->atio, atio, sizeof(*atio));
5281
5282 cmd->tgt = vha->vha_tgt.qla_tgt;
5283 cmd->vha = vha;
7c3f8fd1 5284 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5285 cmd->q_full = 1;
82de802a 5286 cmd->qpair = ha->base_qpair;
33e79977
QT		 5287
5288 if (qfull) {
5289 cmd->q_full = 1;
5290 /* NOTE: borrowing the state field to carry the status */
5291 cmd->state = status;
5292 } else
5293 cmd->term_exchg = 1;
5294
82de802a 5295 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5296 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5297
5298 vha->hw->tgt.num_qfull_cmds_alloc++;
5299 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5300 vha->qla_stats.stat_max_qfull_cmds_alloc)
5301 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5302 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5303 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5304}
5305
5306int
82de802a 5307qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5308{
82de802a 5309 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5310 struct qla_hw_data *ha = vha->hw;
5311 unsigned long flags;
5312 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5313 struct list_head free_list, q_full_list;
33e79977
QT		 5314 int rc = 0;
5315
5316 if (list_empty(&ha->tgt.q_full_list))
5317 return 0;
5318
5319 INIT_LIST_HEAD(&free_list);
82de802a 5320 INIT_LIST_HEAD(&q_full_list);
33e79977 5321
82de802a 5322 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5323 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5324 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5325 return 0;
5326 }
5327
82de802a
QT		 5328 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5329 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5330
5331 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5332 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5333 if (cmd->q_full)
5334 /* cmd->state is a borrowed field to hold status */
82de802a 5335 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5336 else if (cmd->term_exchg)
82de802a 5337 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5338
5339 if (rc == -ENOMEM)
5340 break;
5341
5342 if (cmd->q_full)
5343 ql_dbg(ql_dbg_io, vha, 0x3006,
5344 "%s: busy sent for ox_id[%04x]\n", __func__,
5345 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5346 else if (cmd->term_exchg)
5347 ql_dbg(ql_dbg_io, vha, 0x3007,
5348 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5349 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5350 else
5351 ql_dbg(ql_dbg_io, vha, 0x3008,
5352 "%s: Unexpected cmd in QFull list %p\n", __func__,
5353 cmd);
5354
5355 list_del(&cmd->cmd_list);
5356 list_add_tail(&cmd->cmd_list, &free_list);
5357
5358 /* piggy back on hardware_lock for protection */
5359 vha->hw->tgt.num_qfull_cmds_alloc--;
5360 }
82de802a 5361 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5362
5363 cmd = NULL;
5364
5365 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5366 list_del(&cmd->cmd_list);
5367 /* This cmd was never sent to TCM. There is no need
5368 * to schedule free or call free_cmd
5369 */
5370 qlt_free_cmd(cmd);
5371 }
82de802a
QT		 5372
5373 if (!list_empty(&q_full_list)) {
5374 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5375 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5376 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5377 }
5378
33e79977
QT		 5379 return rc;
5380}
5381
5382static void
82de802a
QT		 5383qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5384 uint16_t status)
33e79977
QT		 5385{
5386 int rc = 0;
82de802a 5387 struct scsi_qla_host *vha = qpair->vha;
33e79977 5388
82de802a 5389 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5390 if (rc == -ENOMEM)
5391 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5392}
5393
5394static int
82de802a
QT		 5395qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5396 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5397{
5398 struct qla_hw_data *ha = vha->hw;
8b666809 5399 unsigned long flags;
33e79977
QT		 5400
5401 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5402 return 0;
5403
8b666809
QT		 5404 if (!ha_locked)
5405 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5406 qlt_send_busy(qpair, atio, qla_sam_status);
8b666809
QT		 5407 if (!ha_locked)
5408 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5409
33e79977 5410 return 1;
2d70c103
NB		 5411}
5412
5413/* ha->hardware_lock supposed to be held on entry */
5414/* called via callback from qla2xxx */
5415static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5416 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5417{
5418 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5419 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5420 int rc;
7cf95f7e 5421 unsigned long flags = 0;
2d70c103
NB		 5422
5423 if (unlikely(tgt == NULL)) {
ec7193e2 5424 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5425 "ATIO pkt, but no tgt (ha %p)", ha);
5426 return;
5427 }
2d70c103
NB		 5428 /*
5429 * In tgt_stop mode we also should allow all requests to pass.
5430 * Otherwise, some commands can stuck.
5431 */
5432
2f424b9b 5433 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5434
5435 switch (atio->u.raw.entry_type) {
5436 case ATIO_TYPE7:
2d70c103
NB		 5437 if (unlikely(atio->u.isp24.exchange_addr ==
5438 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5439 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5440 "qla_target(%d): ATIO_TYPE7 "
5441 "received with UNKNOWN exchange address, "
5442 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5443 if (!ha_locked)
5444 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5445 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
2f424b9b 5446 if (!ha_locked)
82de802a
QT		 5447 spin_unlock_irqrestore(&ha->hardware_lock,
5448 flags);
2d70c103
NB		 5449 break;
5450 }
33e79977 5451
33e79977 5452 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5453 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5454 atio, ha_locked);
33e79977 5455 if (rc != 0) {
2f424b9b 5456 tgt->atio_irq_cmd_count--;
33e79977
QT		 5457 return;
5458 }
2d70c103 5459 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5460 } else {
2d70c103 5461 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5462 }
2d70c103 5463 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5464 if (!ha_locked)
5465 spin_lock_irqsave(&ha->hardware_lock, flags);
5466 switch (rc) {
5467 case -ENODEV:
5468 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5469 "qla_target: Unable to send command to target\n");
5470 break;
5471 case -EBADF:
5472 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5473 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
82de802a
QT		 5474 qlt_send_term_exchange(ha->base_qpair, NULL,
5475 atio, 1, 0);
7cf95f7e
QT		 5476 break;
5477 case -EBUSY:
5478 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5479 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5480 vha->vp_idx);
5481 qlt_send_busy(ha->base_qpair, atio,
5482 tc_sam_status);
5483 break;
5484 default:
5485 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5486 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5487 vha->vp_idx);
5488 qlt_send_busy(ha->base_qpair, atio,
5489 qla_sam_status);
5490 break;
2d70c103 5491 }
7cf95f7e
QT		 5492 if (!ha_locked)
5493 spin_unlock_irqrestore(&ha->hardware_lock,
5494 flags);
2d70c103
NB		 5495 }
5496 break;
5497
5498 case IMMED_NOTIFY_TYPE:
5499 {
5500 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5501 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5502 "qla_target(%d): Received ATIO packet %x "
5503 "with error status %x\n", vha->vp_idx,
5504 atio->u.raw.entry_type,
5505 atio->u.isp2x.entry_status);
5506 break;
5507 }
5508 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5509
5510 if (!ha_locked)
5511 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5512 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5513 if (!ha_locked)
5514 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5515 break;
5516 }
5517
5518 default:
5519 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5520 "qla_target(%d): Received unknown ATIO atio "
5521 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5522 break;
5523 }
5524
2f424b9b 5525 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5526}
5527
5528/* ha->hardware_lock supposed to be held on entry */
5529/* called via callback from qla2xxx */
82de802a
QT		 5530static void qlt_response_pkt(struct scsi_qla_host *vha,
5531 struct rsp_que *rsp, response_t *pkt)
2d70c103 5532{
0e8cd71c 5533 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5534
5535 if (unlikely(tgt == NULL)) {
5536 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5537 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5538 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5539 return;
5540 }
5541
2d70c103
NB		 5542 /*
5543 * In tgt_stop mode we also should allow all requests to pass.
5544 * Otherwise, some commands can stuck.
5545 */
5546
2d70c103 5547 switch (pkt->entry_type) {
f83adb61 5548 case CTIO_CRC2:
2d70c103
NB		 5549 case CTIO_TYPE7:
5550 {
5551 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
82de802a 5552 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5553 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5554 entry);
5555 break;
5556 }
5557
5558 case ACCEPT_TGT_IO_TYPE:
5559 {
5560 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5561 int rc;
2d70c103 5562 if (atio->u.isp2x.status !=
ad950360 5563 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5564 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5565 "qla_target(%d): ATIO with error "
5566 "status %x received\n", vha->vp_idx,
5567 le16_to_cpu(atio->u.isp2x.status));
5568 break;
5569 }
2d70c103 5570
82de802a 5571 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5572 if (rc != 0)
33e79977 5573 return;
33e79977 5574
2d70c103
NB		 5575 rc = qlt_handle_cmd_for_atio(vha, atio);
5576 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5577 switch (rc) {
5578 case -ENODEV:
5579 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5580 "qla_target: Unable to send command to target\n");
5581 break;
5582 case -EBADF:
5583 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5584 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5585 qlt_send_term_exchange(rsp->qpair, NULL,
5586 atio, 1, 0);
5587 break;
5588 case -EBUSY:
5589 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5590 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5591 vha->vp_idx);
5592 qlt_send_busy(rsp->qpair, atio,
5593 tc_sam_status);
5594 break;
5595 default:
5596 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5597 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5598 vha->vp_idx);
5599 qlt_send_busy(rsp->qpair, atio,
5600 qla_sam_status);
5601 break;
2d70c103
NB		 5602 }
5603 }
5604 }
5605 break;
5606
5607 case CONTINUE_TGT_IO_TYPE:
5608 {
5609 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5610 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5611 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5612 entry);
5613 break;
5614 }
5615
5616 case CTIO_A64_TYPE:
5617 {
5618 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
82de802a 5619 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5620 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5621 entry);
5622 break;
5623 }
5624
5625 case IMMED_NOTIFY_TYPE:
5626 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5627 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5628 break;
5629
5630 case NOTIFY_ACK_TYPE:
5631 if (tgt->notify_ack_expected > 0) {
5632 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
5633 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5634 "NOTIFY_ACK seq %08x status %x\n",
5635 le16_to_cpu(entry->u.isp2x.seq_id),
5636 le16_to_cpu(entry->u.isp2x.status));
5637 tgt->notify_ack_expected--;
5638 if (entry->u.isp2x.status !=
ad950360 5639 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5640 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5641 "qla_target(%d): NOTIFY_ACK "
5642 "failed %x\n", vha->vp_idx,
5643 le16_to_cpu(entry->u.isp2x.status));
5644 }
5645 } else {
5646 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5647 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5648 vha->vp_idx);
5649 }
5650 break;
5651
5652 case ABTS_RECV_24XX:
5653 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5654 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5655 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5656 break;
5657
5658 case ABTS_RESP_24XX:
5659 if (tgt->abts_resp_expected > 0) {
5660 struct abts_resp_from_24xx_fw *entry =
5661 (struct abts_resp_from_24xx_fw *)pkt;
5662 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5663 "ABTS_RESP_24XX: compl_status %x\n",
5664 entry->compl_status);
5665 tgt->abts_resp_expected--;
5666 if (le16_to_cpu(entry->compl_status) !=
5667 ABTS_RESP_COMPL_SUCCESS) {
5668 if ((entry->error_subcode1 == 0x1E) &&
5669 (entry->error_subcode2 == 0)) {
5670 /*
5671 * We've got a race here: aborted
5672 * exchange not terminated, i.e.
5673 * response for the aborted command was
5674 * sent between the abort request was
5675 * received and processed.
5676 * Unfortunately, the firmware has a
5677 * silly requirement that all aborted
5678 * exchanges must be explicitely
5679 * terminated, otherwise it refuses to
5680 * send responses for the abort
5681 * requests. So, we have to
5682 * (re)terminate the exchange and retry
5683 * the abort response.
5684 */
5685 qlt_24xx_retry_term_exchange(vha,
5686 entry);
5687 } else
5688 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5689 "qla_target(%d): ABTS_RESP_24XX "
5690 "failed %x (subcode %x:%x)",
5691 vha->vp_idx, entry->compl_status,
5692 entry->error_subcode1,
5693 entry->error_subcode2);
5694 }
5695 } else {
5696 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5697 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5698 "received\n", vha->vp_idx);
5699 }
5700 break;
5701
5702 default:
5703 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5704 "qla_target(%d): Received unknown response pkt "
5705 "type %x\n", vha->vp_idx, pkt->entry_type);
5706 break;
5707 }
5708
2d70c103
NB		 5709}
5710
5711/*
5712 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5713 */
5714void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5715 uint16_t *mailbox)
5716{
5717 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5718 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5719 int login_code;
2d70c103 5720
3a33dc95 5721 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5722 return;
5723
2d70c103
NB		 5724 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5725 IS_QLA2100(ha))
5726 return;
5727 /*
5728 * In tgt_stop mode we also should allow all requests to pass.
5729 * Otherwise, some commands can stuck.
5730 */
5731
2d70c103
NB		 5732
5733 switch (code) {
5734 case MBA_RESET: /* Reset */
5735 case MBA_SYSTEM_ERR: /* System Error */
5736 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5737 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5738 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5739 "qla_target(%d): System error async event %#x "
6efb3c0a 5740 "occurred", vha->vp_idx, code);
2d70c103
NB		 5741 break;
5742 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5743 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5744 break;
5745
5746 case MBA_LOOP_UP:
5747 {
5748 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5749 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5750 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5751 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5752 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5753 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5754 qlt_send_notify_ack(ha->base_qpair,
5755 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5756 0, 0, 0, 0, 0, 0);
5757 tgt->link_reinit_iocb_pending = 0;
5758 }
5759 break;
5760 }
5761
5762 case MBA_LIP_OCCURRED:
5763 case MBA_LOOP_DOWN:
5764 case MBA_LIP_RESET:
5765 case MBA_RSCN_UPDATE:
5766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5767 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 5768 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5769 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5770 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 5771 break;
5772
ead03855 5773 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5775 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5776 vha->vp_idx,
5777 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5778 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 5779
5780 if (le16_to_cpu(mailbox[3]) == 1) {
5781 /* exchange starvation. */
5782 vha->hw->exch_starvation++;
5783 if (vha->hw->exch_starvation > 5) {
83548fe2 5784 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5785 "Exchange starvation-. Resetting RISC\n");
5786
5787 vha->hw->exch_starvation = 0;
5788 if (IS_P3P_TYPE(vha->hw))
5789 set_bit(FCOE_CTX_RESET_NEEDED,
5790 &vha->dpc_flags);
5791 else
5792 set_bit(ISP_ABORT_NEEDED,
5793 &vha->dpc_flags);
5794 qla2xxx_wake_dpc(vha);
5795 }
5796 }
5797 break;
5798
2d70c103
NB		 5799 case MBA_PORT_UPDATE:
5800 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5801 "qla_target(%d): Port update async event %#x "
6efb3c0a 5802 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 5803 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
5804 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5805 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
5806
5807 login_code = le16_to_cpu(mailbox[2]);
ead03855 5808 if (login_code == 0x4) {
2d70c103
NB		 5809 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5810 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5811 vha->hw->exch_starvation = 0;
5812 } else if (login_code == 0x7)
2d70c103
NB		 5813 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5814 "Async MB 2: Port Logged Out\n");
5815 break;
2d70c103 5816 default:
2d70c103
NB		 5817 break;
5818 }
5819
2d70c103
NB		 5820}
5821
5822static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
5823 uint16_t loop_id)
5824{
726b8548 5825 fc_port_t *fcport, *tfcp, *del;
2d70c103 5826 int rc;
726b8548
QT		 5827 unsigned long flags;
5828 u8 newfcport = 0;
2d70c103 5829
063b36d6 5830 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 5831 if (!fcport) {
5832 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
5833 "qla_target(%d): Allocation of tmp FC port failed",
5834 vha->vp_idx);
5835 return NULL;
5836 }
5837
2d70c103
NB		 5838 fcport->loop_id = loop_id;
5839
15f30a57 5840 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 5841 if (rc != QLA_SUCCESS) {
5842 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
5843 "qla_target(%d): Failed to retrieve fcport "
5844 "information -- get_port_database() returned %x "
5845 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
5846 kfree(fcport);
5847 return NULL;
5848 }
5849
726b8548
QT		 5850 del = NULL;
5851 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
5852 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
5853
5854 if (tfcp) {
5855 tfcp->d_id = fcport->d_id;
5856 tfcp->port_type = fcport->port_type;
5857 tfcp->supported_classes = fcport->supported_classes;
5858 tfcp->flags |= fcport->flags;
76f9a2dd 5859 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 5860
5861 del = fcport;
5862 fcport = tfcp;
5863 } else {
5864 if (vha->hw->current_topology == ISP_CFG_F)
5865 fcport->flags |= FCF_FABRIC_DEVICE;
5866
5867 list_add_tail(&fcport->list, &vha->vp_fcports);
5868 if (!IS_SW_RESV_ADDR(fcport->d_id))
5869 vha->fcport_count++;
5870 fcport->login_gen++;
5871 fcport->disc_state = DSC_LOGIN_COMPLETE;
5872 fcport->login_succ = 1;
5873 newfcport = 1;
5874 }
5875
5876 fcport->deleted = 0;
5877 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
5878
5879 switch (vha->host->active_mode) {
5880 case MODE_INITIATOR:
5881 case MODE_DUAL:
5882 if (newfcport) {
5883 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
83548fe2 5884 ql_dbg(ql_dbg_disc, vha, 0x20fe,
726b8548
QT		 5885 "%s %d %8phC post upd_fcport fcp_cnt %d\n",
5886 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5887 qla24xx_post_upd_fcport_work(vha, fcport);
5888 } else {
83548fe2 5889 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 5890 "%s %d %8phC post gpsc fcp_cnt %d\n",
5891 __func__, __LINE__, fcport->port_name, vha->fcport_count);
5892 qla24xx_post_gpsc_work(vha, fcport);
5893 }
5894 }
5895 break;
5896
5897 case MODE_TARGET:
5898 default:
5899 break;
5900 }
5901 if (del)
5902 qla2x00_free_fcport(del);
5903
2d70c103
NB		 5904 return fcport;
5905}
5906
5907/* Must be called under tgt_mutex */
5d964837 5908static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 5909 uint8_t *s_id)
5910{
5d964837 5911 struct fc_port *sess = NULL;
2d70c103
NB		 5912 fc_port_t *fcport = NULL;
5913 int rc, global_resets;
5914 uint16_t loop_id = 0;
5915
726b8548
QT		 5916 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
5917 /*
5918 * This is Domain Controller, so it should be
5919 * OK to drop SCSI commands from it.
5920 */
5921 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
5922 "Unable to find initiator with S_ID %x:%x:%x",
5923 s_id[0], s_id[1], s_id[2]);
5924 return NULL;
5925 }
5926
71cdc079
AP		 5927 mutex_lock(&vha->vha_tgt.tgt_mutex);
5928
2d70c103 5929retry:
0e8cd71c
SK		 5930 global_resets =
5931 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 5932
5933 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
5934 if (rc != 0) {
71cdc079
AP		 5935 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5936
726b8548
QT		 5937 ql_log(ql_log_info, vha, 0xf071,
5938 "qla_target(%d): Unable to find "
5939 "initiator with S_ID %x:%x:%x",
5940 vha->vp_idx, s_id[0], s_id[1],
5941 s_id[2]);
71cdc079
AP		 5942
5943 if (rc == -ENOENT) {
5944 qlt_port_logo_t logo;
5945 sid_to_portid(s_id, &logo.id);
5946 logo.cmd_count = 1;
5947 qlt_send_first_logo(vha, &logo);
5948 }
5949
2d70c103
NB		 5950 return NULL;
5951 }
5952
5953 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 5954 if (!fcport) {
5955 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 5956 return NULL;
71cdc079 5957 }
2d70c103
NB		 5958
5959 if (global_resets !=
0e8cd71c 5960 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 5961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
5962 "qla_target(%d): global reset during session discovery "
5963 "(counter was %d, new %d), retrying", vha->vp_idx,
5964 global_resets,
0e8cd71c
SK		 5965 atomic_read(&vha->vha_tgt.
5966 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 5967 goto retry;
5968 }
5969
5970 sess = qlt_create_sess(vha, fcport, true);
5971
71cdc079
AP		 5972 mutex_unlock(&vha->vha_tgt.tgt_mutex);
5973
2d70c103
NB		 5974 return sess;
5975}
5976
5977static void qlt_abort_work(struct qla_tgt *tgt,
5978 struct qla_tgt_sess_work_param *prm)
5979{
5980 struct scsi_qla_host *vha = tgt->vha;
5981 struct qla_hw_data *ha = vha->hw;
5d964837 5982 struct fc_port *sess = NULL;
7560151b 5983 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 5984 uint32_t be_s_id;
5985 uint8_t s_id[3];
5986 int rc;
5987
7560151b 5988 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 5989
5990 if (tgt->tgt_stop)
7560151b 5991 goto out_term2;
2d70c103
NB		 5992
5993 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
5994 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
5995 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
5996
5997 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
5998 (unsigned char *)&be_s_id);
5999 if (!sess) {
7560151b 6000 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 6001
2d70c103
NB		 6002 sess = qlt_make_local_sess(vha, s_id);
6003 /* sess has got an extra creation ref */
2d70c103 6004
7560151b 6005 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 6006 if (!sess)
7560151b 6007 goto out_term2;
2d70c103 6008 } else {
726b8548 6009 if (sess->deleted) {
e52a8b45 6010 sess = NULL;
7560151b 6011 goto out_term2;
e52a8b45
AP		 6012 }
6013
726b8548 6014 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6015 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 6016 "%s: kref_get fail %8phC \n",
6017 __func__, sess->port_name);
6018 sess = NULL;
6019 goto out_term2;
6020 }
2d70c103
NB		 6021 }
6022
2d70c103 6023 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 6024 ha->tgt.tgt_ops->put_sess(sess);
6025 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6026
2d70c103
NB		 6027 if (rc != 0)
6028 goto out_term;
2d70c103
NB		 6029 return;
6030
7560151b 6031out_term2:
f159b3c7
QT		 6032 if (sess)
6033 ha->tgt.tgt_ops->put_sess(sess);
6034 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 6035
2d70c103 6036out_term:
f159b3c7 6037 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6038 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6039 FCP_TMF_REJECTED, false);
7560151b 6040 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6041}
6042
6043static void qlt_tmr_work(struct qla_tgt *tgt,
6044 struct qla_tgt_sess_work_param *prm)
6045{
6046 struct atio_from_isp *a = &prm->tm_iocb2;
6047 struct scsi_qla_host *vha = tgt->vha;
6048 struct qla_hw_data *ha = vha->hw;
5d964837 6049 struct fc_port *sess = NULL;
2d70c103
NB		 6050 unsigned long flags;
6051 uint8_t *s_id = NULL; /* to hide compiler warnings */
6052 int rc;
f775bd14 6053 u64 unpacked_lun;
52c82823 6054 int fn;
2d70c103
NB		 6055 void *iocb;
6056
7560151b 6057 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6058
6059 if (tgt->tgt_stop)
f159b3c7 6060 goto out_term2;
2d70c103
NB		 6061
6062 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6063 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6064 if (!sess) {
7560151b 6065 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6066
2d70c103
NB		 6067 sess = qlt_make_local_sess(vha, s_id);
6068 /* sess has got an extra creation ref */
2d70c103 6069
7560151b 6070 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6071 if (!sess)
f159b3c7 6072 goto out_term2;
2d70c103 6073 } else {
726b8548 6074 if (sess->deleted) {
e52a8b45 6075 sess = NULL;
f159b3c7 6076 goto out_term2;
e52a8b45
AP		 6077 }
6078
726b8548 6079 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6080 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6081 "%s: kref_get fail %8phC\n",
6082 __func__, sess->port_name);
6083 sess = NULL;
f159b3c7 6084 goto out_term2;
726b8548 6085 }
2d70c103
NB		 6086 }
6087
6088 iocb = a;
2d70c103 6089 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6090 unpacked_lun =
6091 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6092
6093 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 6094 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6095 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 6096
6097 if (rc != 0)
6098 goto out_term;
2d70c103
NB		 6099 return;
6100
f159b3c7
QT		 6101out_term2:
6102 if (sess)
6103 ha->tgt.tgt_ops->put_sess(sess);
6104 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6105out_term:
82de802a 6106 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6107}
6108
6109static void qlt_sess_work_fn(struct work_struct *work)
6110{
6111 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6112 struct scsi_qla_host *vha = tgt->vha;
6113 unsigned long flags;
6114
6115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6116
6117 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6118 while (!list_empty(&tgt->sess_works_list)) {
6119 struct qla_tgt_sess_work_param *prm = list_entry(
6120 tgt->sess_works_list.next, typeof(*prm),
6121 sess_works_list_entry);
6122
6123 /*
6124 * This work can be scheduled on several CPUs at time, so we
6125 * must delete the entry to eliminate double processing
6126 */
6127 list_del(&prm->sess_works_list_entry);
6128
6129 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6130
6131 switch (prm->type) {
6132 case QLA_TGT_SESS_WORK_ABORT:
6133 qlt_abort_work(tgt, prm);
6134 break;
6135 case QLA_TGT_SESS_WORK_TM:
6136 qlt_tmr_work(tgt, prm);
6137 break;
6138 default:
6139 BUG_ON(1);
6140 break;
6141 }
6142
6143 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6144
6145 kfree(prm);
6146 }
6147 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6148}
6149
6150/* Must be called under tgt_host_action_mutex */
6151int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6152{
6153 struct qla_tgt *tgt;
e326d22a
QT		 6154 int rc, i;
6155 struct qla_qpair_hint *h;
2d70c103
NB		 6156
6157 if (!QLA_TGT_MODE_ENABLED())
6158 return 0;
6159
33c36c0a
AE		 6160 if (!IS_TGT_MODE_CAPABLE(ha)) {
6161 ql_log(ql_log_warn, base_vha, 0xe070,
6162 "This adapter does not support target mode.\n");
6163 return 0;
6164 }
6165
2d70c103 6166 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6167 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6168
0e8cd71c 6169 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6170
6171 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6172 if (!tgt) {
6173 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6174 "Unable to allocate struct qla_tgt\n");
6175 return -ENOMEM;
6176 }
6177
e326d22a
QT		 6178 tgt->qphints = kzalloc((ha->max_qpairs + 1) *
6179 sizeof(struct qla_qpair_hint), GFP_KERNEL);
6180 if (!tgt->qphints) {
6181 kfree(tgt);
6182 ql_log(ql_log_warn, base_vha, 0x0197,
6183 "Unable to allocate qpair hints.\n");
6184 return -ENOMEM;
6185 }
6186
2d70c103
NB		 6187 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6188 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6189
e326d22a
QT		 6190 rc = btree_init64(&tgt->lun_qpair_map);
6191 if (rc) {
6192 kfree(tgt->qphints);
6193 kfree(tgt);
6194 ql_log(ql_log_info, base_vha, 0x0198,
6195 "Unable to initialize lun_qpair_map btree\n");
6196 return -EIO;
6197 }
6198 h = &tgt->qphints[0];
6199 h->qpair = ha->base_qpair;
6200 INIT_LIST_HEAD(&h->hint_elem);
6201 h->cpuid = ha->base_qpair->cpuid;
6202 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6203
6204 for (i = 0; i < ha->max_qpairs; i++) {
6205 unsigned long flags;
6206
6207 struct qla_qpair *qpair = ha->queue_pair_map[i];
6208 h = &tgt->qphints[i + 1];
6209 INIT_LIST_HEAD(&h->hint_elem);
6210 if (qpair) {
6211 h->qpair = qpair;
6212 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6213 list_add_tail(&h->hint_elem, &qpair->hints_list);
6214 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6215 h->cpuid = qpair->cpuid;
6216 }
6217 }
6218
2d70c103
NB		 6219 tgt->ha = ha;
6220 tgt->vha = base_vha;
6221 init_waitqueue_head(&tgt->waitQ);
2d70c103 6222 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6223 spin_lock_init(&tgt->sess_work_lock);
6224 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6225 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6226 atomic_set(&tgt->tgt_global_resets_count, 0);
6227
0e8cd71c 6228 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6229
6230 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6231 "qla_target(%d): using 64 Bit PCI addressing",
6232 base_vha->vp_idx);
2d70c103
NB		 6233 /* 3 is reserved */
6234 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6235
6236 mutex_lock(&qla_tgt_mutex);
6237 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6238 mutex_unlock(&qla_tgt_mutex);
6239
f1443eeb
QT		 6240 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6241 ha->tgt.tgt_ops->add_target(base_vha);
6242
2d70c103
NB		 6243 return 0;
6244}
6245
6246/* Must be called under tgt_host_action_mutex */
6247int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6248{
0e8cd71c 6249 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6250 return 0;
6251
ddb95145
NB		 6252 if (vha->fc_vport) {
6253 qlt_release(vha->vha_tgt.qla_tgt);
6254 return 0;
6255 }
33e79977
QT		 6256
6257 /* free left over qfull cmds */
6258 qlt_init_term_exchange(vha);
6259
2d70c103
NB		 6260 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6261 vha->host_no, ha);
0e8cd71c 6262 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6263
6264 return 0;
6265}
6266
482c9dc7
QT		 6267void qlt_remove_target_resources(struct qla_hw_data *ha)
6268{
6269 struct scsi_qla_host *node;
6270 u32 key = 0;
6271
6272 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6273 btree_remove32(&ha->tgt.host_map, key);
6274
6275 btree_destroy32(&ha->tgt.host_map);
6276}
6277
2d70c103
NB		 6278static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6279 unsigned char *b)
6280{
6281 int i;
6282
6283 pr_debug("qla2xxx HW vha->node_name: ");
6284 for (i = 0; i < WWN_SIZE; i++)
6285 pr_debug("%02x ", vha->node_name[i]);
6286 pr_debug("\n");
6287 pr_debug("qla2xxx HW vha->port_name: ");
6288 for (i = 0; i < WWN_SIZE; i++)
6289 pr_debug("%02x ", vha->port_name[i]);
6290 pr_debug("\n");
6291
6292 pr_debug("qla2xxx passed configfs WWPN: ");
6293 put_unaligned_be64(wwpn, b);
6294 for (i = 0; i < WWN_SIZE; i++)
6295 pr_debug("%02x ", b[i]);
6296 pr_debug("\n");
6297}
6298
6299/**
6300 * qla_tgt_lport_register - register lport with external module
6301 *
2d70c103 6302 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
2db6228d
BVA		 6303 * @phys_wwpn:
6304 * @npiv_wwpn:
6305 * @npiv_wwnn:
6306 * @callback: lport initialization callback for tcm_qla2xxx code
2d70c103 6307 */
49a47f2c
NB		 6308int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6309 u64 npiv_wwpn, u64 npiv_wwnn,
6310 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6311{
6312 struct qla_tgt *tgt;
6313 struct scsi_qla_host *vha;
6314 struct qla_hw_data *ha;
6315 struct Scsi_Host *host;
6316 unsigned long flags;
6317 int rc;
6318 u8 b[WWN_SIZE];
6319
6320 mutex_lock(&qla_tgt_mutex);
6321 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6322 vha = tgt->vha;
6323 ha = vha->hw;
6324
6325 host = vha->host;
6326 if (!host)
6327 continue;
6328
2d70c103
NB		 6329 if (!(host->hostt->supported_mode & MODE_TARGET))
6330 continue;
6331
6332 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6333 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6334 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6335 host->host_no);
6336 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6337 continue;
6338 }
ddb95145
NB		 6339 if (tgt->tgt_stop) {
6340 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6341 host->host_no);
6342 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6343 continue;
6344 }
2d70c103
NB		 6345 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6346
6347 if (!scsi_host_get(host)) {
6348 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6349 "Unable to scsi_host_get() for"
6350 " qla2xxx scsi_host\n");
6351 continue;
6352 }
49a47f2c 6353 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6354
6355 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6356 scsi_host_put(host);
6357 continue;
6358 }
49a47f2c
NB		 6359 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6360 if (rc != 0)
6361 scsi_host_put(host);
6362
ddb95145 6363 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6364 return rc;
6365 }
6366 mutex_unlock(&qla_tgt_mutex);
6367
6368 return -ENODEV;
6369}
6370EXPORT_SYMBOL(qlt_lport_register);
6371
6372/**
6373 * qla_tgt_lport_deregister - Degister lport
6374 *
6375 * @vha: Registered scsi_qla_host pointer
6376 */
6377void qlt_lport_deregister(struct scsi_qla_host *vha)
6378{
6379 struct qla_hw_data *ha = vha->hw;
6380 struct Scsi_Host *sh = vha->host;
6381 /*
6382 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6383 */
0e8cd71c 6384 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6385 ha->tgt.tgt_ops = NULL;
6386 /*
6387 * Release the Scsi_Host reference for the underlying qla2xxx host
6388 */
6389 scsi_host_put(sh);
6390}
6391EXPORT_SYMBOL(qlt_lport_deregister);
6392
6393/* Must be called under HW lock */
55a9066f 6394static void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6395{
2d70c103
NB		 6396 switch (ql2x_ini_mode) {
6397 case QLA2XXX_INI_MODE_DISABLED:
6398 case QLA2XXX_INI_MODE_EXCLUSIVE:
6399 vha->host->active_mode = MODE_TARGET;
6400 break;
6401 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6402 vha->host->active_mode = MODE_UNKNOWN;
6403 break;
6404 case QLA2XXX_INI_MODE_DUAL:
6405 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6406 break;
6407 default:
6408 break;
6409 }
2d70c103
NB		 6410}
6411
6412/* Must be called under HW lock */
55a9066f 6413static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6414{
2d70c103
NB		 6415 switch (ql2x_ini_mode) {
6416 case QLA2XXX_INI_MODE_DISABLED:
6417 vha->host->active_mode = MODE_UNKNOWN;
6418 break;
6419 case QLA2XXX_INI_MODE_EXCLUSIVE:
6420 vha->host->active_mode = MODE_INITIATOR;
6421 break;
6422 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6423 case QLA2XXX_INI_MODE_DUAL:
6424 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6425 break;
6426 default:
6427 break;
6428 }
2d70c103
NB		 6429}
6430
6431/*
6432 * qla_tgt_enable_vha - NO LOCK HELD
6433 *
6434 * host_reset, bring up w/ Target Mode Enabled
6435 */
6436void
6437qlt_enable_vha(struct scsi_qla_host *vha)
6438{
6439 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6440 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6441 unsigned long flags;
0e8cd71c 6442 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6443
6444 if (!tgt) {
6445 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6446 "Unable to locate qla_tgt pointer from"
6447 " struct qla_hw_data\n");
6448 dump_stack();
6449 return;
6450 }
6451
6452 spin_lock_irqsave(&ha->hardware_lock, flags);
6453 tgt->tgt_stopped = 0;
6454 qlt_set_mode(vha);
6455 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6456
0e8cd71c
SK		 6457 if (vha->vp_idx) {
6458 qla24xx_disable_vp(vha);
6459 qla24xx_enable_vp(vha);
6460 } else {
6461 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6462 qla2xxx_wake_dpc(base_vha);
6463 qla2x00_wait_for_hba_online(base_vha);
6464 }
2d70c103
NB		 6465}
6466EXPORT_SYMBOL(qlt_enable_vha);
6467
6468/*
6469 * qla_tgt_disable_vha - NO LOCK HELD
6470 *
6471 * Disable Target Mode and reset the adapter
6472 */
55a9066f 6473static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6474{
6475 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6476 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6477 unsigned long flags;
6478
6479 if (!tgt) {
6480 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6481 "Unable to locate qla_tgt pointer from"
6482 " struct qla_hw_data\n");
6483 dump_stack();
6484 return;
6485 }
6486
6487 spin_lock_irqsave(&ha->hardware_lock, flags);
6488 qlt_clear_mode(vha);
6489 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6490
6491 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6492 qla2xxx_wake_dpc(vha);
6493 qla2x00_wait_for_hba_online(vha);
6494}
6495
6496/*
6497 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6498 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6499 * members.
6500 */
6501void
6502qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6503{
0e8cd71c
SK		 6504 vha->vha_tgt.qla_tgt = NULL;
6505
6506 mutex_init(&vha->vha_tgt.tgt_mutex);
6507 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6508
6509 qlt_clear_mode(vha);
6510
6511 /*
6512 * NOTE: Currently the value is kept the same for <24xx and
6513 * >=24xx ISPs. If it is necessary to change it,
6514 * the check should be added for specific ISPs,
6515 * assigning the value appropriately.
6516 */
6517 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6518
6519 qlt_add_target(ha, vha);
2d70c103
NB		 6520}
6521
e374f9f5
QT		 6522u8
6523qlt_rff_id(struct scsi_qla_host *vha)
2d70c103 6524{
e374f9f5 6525 u8 fc4_feature = 0;
2d70c103
NB		 6526 /*
6527 * FC-4 Feature bit 0 indicates target functionality to the name server.
6528 */
6529 if (qla_tgt_mode_enabled(vha)) {
e374f9f5 6530 fc4_feature = BIT_0;
2d70c103 6531 } else if (qla_ini_mode_enabled(vha)) {
e374f9f5 6532 fc4_feature = BIT_1;
726b8548 6533 } else if (qla_dual_mode_enabled(vha))
e374f9f5
QT		 6534 fc4_feature = BIT_0 | BIT_1;
6535
6536 return fc4_feature;
2d70c103
NB		 6537}
6538
6539/*
6540 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6541 * @ha: HA context
6542 *
6543 * Beginning of ATIO ring has initialization control block already built
6544 * by nvram config routine.
6545 *
6546 * Returns 0 on success.
6547 */
6548void
6549qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6550{
6551 struct qla_hw_data *ha = vha->hw;
6552 uint16_t cnt;
6553 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6554
ead03855 6555 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6556 return;
6557
6558 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6559 pkt->u.raw.signature = ATIO_PROCESSED;
6560 pkt++;
6561 }
6562
6563}
6564
6565/*
6566 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6567 * @ha: SCSI driver HA context
6568 */
6569void
2f424b9b 6570qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6571{
6572 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6573 struct atio_from_isp *pkt;
6574 int cnt, i;
6575
ec7193e2 6576 if (!ha->flags.fw_started)
2d70c103
NB		 6577 return;
6578
5f35509d
QT		 6579 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6580 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6581 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6582 cnt = pkt->u.raw.entry_count;
6583
5f35509d
QT		 6584 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6585 /*
6586 * This packet is corrupted. The header + payload
6587 * can not be trusted. There is no point in passing
6588 * it further up.
6589 */
83548fe2 6590 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6591 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6592 pkt->u.isp24.fcp_hdr.s_id,
6593 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6594 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6595
6596 adjust_corrupted_atio(pkt);
82de802a
QT		 6597 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6598 ha_locked, 0);
5f35509d
QT		 6599 } else {
6600 qlt_24xx_atio_pkt_all_vps(vha,
6601 (struct atio_from_isp *)pkt, ha_locked);
6602 }
2d70c103
NB		 6603
6604 for (i = 0; i < cnt; i++) {
6605 ha->tgt.atio_ring_index++;
6606 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6607 ha->tgt.atio_ring_index = 0;
6608 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6609 } else
6610 ha->tgt.atio_ring_ptr++;
6611
6612 pkt->u.raw.signature = ATIO_PROCESSED;
6613 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6614 }
6615 wmb();
6616 }
6617
6618 /* Adjust ring index */
aa230bc5 6619 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6620}
6621
6622void
aa230bc5 6623qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6624{
6625 struct qla_hw_data *ha = vha->hw;
d2b292c3
QT		 6626 struct qla_msix_entry *msix = &ha->msix_entries[2];
6627 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6628
aa230bc5
AE		 6629 if (!QLA_TGT_MODE_ENABLED())
6630 return;
2d70c103 6631
aa230bc5
AE		 6632 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6633 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6634 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6635
d2b292c3
QT		 6636 if (ha->flags.msix_enabled) {
6637 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6638 if (IS_QLA2071(ha)) {
6639 /* 4 ports Baker: Enable Interrupt Handshake */
6640 icb->msix_atio = 0;
6641 icb->firmware_options_2 |= BIT_26;
6642 } else {
6643 icb->msix_atio = cpu_to_le16(msix->entry);
6644 icb->firmware_options_2 &= ~BIT_26;
6645 }
6646 ql_dbg(ql_dbg_init, vha, 0xf072,
6647 "Registering ICB vector 0x%x for atio que.\n",
6648 msix->entry);
6649 }
6650 } else {
6651 /* INTx|MSI */
6652 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
6653 icb->msix_atio = 0;
6654 icb->firmware_options_2 |= BIT_26;
6655 ql_dbg(ql_dbg_init, vha, 0xf072,
6656 "%s: Use INTx for ATIOQ.\n", __func__);
6657 }
2d70c103
NB		 6658 }
6659}
6660
6661void
6662qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6663{
6664 struct qla_hw_data *ha = vha->hw;
9cd883f0 6665 u32 tmp;
99e1b683
QT		 6666
6667 if (!QLA_TGT_MODE_ENABLED())
6668 return;
2d70c103 6669
ead03855 6670 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6671 if (!ha->tgt.saved_set) {
6672 /* We save only once */
6673 ha->tgt.saved_exchange_count = nv->exchange_count;
6674 ha->tgt.saved_firmware_options_1 =
6675 nv->firmware_options_1;
6676 ha->tgt.saved_firmware_options_2 =
6677 nv->firmware_options_2;
6678 ha->tgt.saved_firmware_options_3 =
6679 nv->firmware_options_3;
6680 ha->tgt.saved_set = 1;
6681 }
6682
99e1b683 6683 if (qla_tgt_mode_enabled(vha))
ead03855 6684 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6685 else /* dual */
6686 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
2d70c103
NB		 6687
6688 /* Enable target mode */
ad950360 6689 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6690
6691 /* Disable ini mode, if requested */
726b8548 6692 if (qla_tgt_mode_enabled(vha))
ad950360 6693 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6694
6695 /* Disable Full Login after LIP */
ad950360 6696 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6697 /* Enable initial LIP */
ad950360 6698 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6699 if (ql2xtgt_tape_enable)
6700 /* Enable FC Tape support */
6701 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6702 else
6703 /* Disable FC Tape support */
6704 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6705
2d70c103 6706 /* Disable Full Login after LIP */
ad950360 6707 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6708
6709 /*
6710 * clear BIT 15 explicitly as we have seen at least
6711 * a couple of instances where this was set and this
6712 * was causing the firmware to not be initialized.
6713 */
6714 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6715 /* Enable target PRLI control */
ad950360 6716 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6717
6718 if (IS_QLA25XX(ha)) {
6719 /* Change Loop-prefer to Pt-Pt */
6720 tmp = ~(BIT_4|BIT_5|BIT_6);
6721 nv->firmware_options_2 &= cpu_to_le32(tmp);
6722 tmp = P2P << 4;
6723 nv->firmware_options_2 |= cpu_to_le32(tmp);
6724 }
2d70c103
NB		 6725 } else {
6726 if (ha->tgt.saved_set) {
6727 nv->exchange_count = ha->tgt.saved_exchange_count;
6728 nv->firmware_options_1 =
6729 ha->tgt.saved_firmware_options_1;
6730 nv->firmware_options_2 =
6731 ha->tgt.saved_firmware_options_2;
6732 nv->firmware_options_3 =
6733 ha->tgt.saved_firmware_options_3;
6734 }
6735 return;
6736 }
6737
7c3f8fd1 6738 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6739 if (vha->flags.init_done)
6740 fc_host_supported_classes(vha->host) =
6741 FC_COS_CLASS2 | FC_COS_CLASS3;
6742
ad950360 6743 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6744 } else {
6745 if (vha->flags.init_done)
6746 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6747
ad950360 6748 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6749 }
6750}
6751
6752void
6753qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6754 struct init_cb_24xx *icb)
6755{
6756 struct qla_hw_data *ha = vha->hw;
6757
481ce733
QT		 6758 if (!QLA_TGT_MODE_ENABLED())
6759 return;
6760
2d70c103
NB		 6761 if (ha->tgt.node_name_set) {
6762 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6763 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103 6764 }
481ce733
QT		 6765
6766 /* disable ZIO at start time. */
6767 if (!vha->flags.init_done) {
6768 uint32_t tmp;
6769 tmp = le32_to_cpu(icb->firmware_options_2);
6770 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6771 icb->firmware_options_2 = cpu_to_le32(tmp);
6772 }
2d70c103
NB		 6773}
6774
aa230bc5
AE		 6775void
6776qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6777{
6778 struct qla_hw_data *ha = vha->hw;
9cd883f0 6779 u32 tmp;
aa230bc5
AE		 6780
6781 if (!QLA_TGT_MODE_ENABLED())
6782 return;
6783
ead03855 6784 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6785 if (!ha->tgt.saved_set) {
6786 /* We save only once */
6787 ha->tgt.saved_exchange_count = nv->exchange_count;
6788 ha->tgt.saved_firmware_options_1 =
6789 nv->firmware_options_1;
6790 ha->tgt.saved_firmware_options_2 =
6791 nv->firmware_options_2;
6792 ha->tgt.saved_firmware_options_3 =
6793 nv->firmware_options_3;
6794 ha->tgt.saved_set = 1;
6795 }
6796
99e1b683 6797 if (qla_tgt_mode_enabled(vha))
ead03855 6798 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683
QT		 6799 else /* dual */
6800 nv->exchange_count = cpu_to_le16(ql2xexchoffld);
aa230bc5
AE		 6801
6802 /* Enable target mode */
ad950360 6803 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6804
6805 /* Disable ini mode, if requested */
726b8548 6806 if (qla_tgt_mode_enabled(vha))
ad950360 6807 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6808 /* Disable Full Login after LIP */
ad950360 6809 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6810 /* Enable initial LIP */
ad950360 6811 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6812 /*
6813 * clear BIT 15 explicitly as we have seen at
6814 * least a couple of instances where this was set
6815 * and this was causing the firmware to not be
6816 * initialized.
6817 */
6818 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6819 if (ql2xtgt_tape_enable)
6820 /* Enable FC tape support */
6821 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6822 else
6823 /* Disable FC tape support */
6824 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6825
aa230bc5 6826 /* Disable Full Login after LIP */
ad950360 6827 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 6828 /* Enable target PRLI control */
ad950360 6829 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6830
6831 /* Change Loop-prefer to Pt-Pt */
6832 tmp = ~(BIT_4|BIT_5|BIT_6);
6833 nv->firmware_options_2 &= cpu_to_le32(tmp);
6834 tmp = P2P << 4;
6835 nv->firmware_options_2 |= cpu_to_le32(tmp);
aa230bc5
AE		 6836 } else {
6837 if (ha->tgt.saved_set) {
6838 nv->exchange_count = ha->tgt.saved_exchange_count;
6839 nv->firmware_options_1 =
6840 ha->tgt.saved_firmware_options_1;
6841 nv->firmware_options_2 =
6842 ha->tgt.saved_firmware_options_2;
6843 nv->firmware_options_3 =
6844 ha->tgt.saved_firmware_options_3;
6845 }
6846 return;
6847 }
6848
7c3f8fd1 6849 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 6850 if (vha->flags.init_done)
6851 fc_host_supported_classes(vha->host) =
6852 FC_COS_CLASS2 | FC_COS_CLASS3;
6853
ad950360 6854 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 6855 } else {
6856 if (vha->flags.init_done)
6857 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6858
ad950360 6859 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 6860 }
6861}
6862
6863void
6864qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
6865 struct init_cb_81xx *icb)
6866{
6867 struct qla_hw_data *ha = vha->hw;
6868
6869 if (!QLA_TGT_MODE_ENABLED())
6870 return;
6871
6872 if (ha->tgt.node_name_set) {
6873 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6874 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5 6875 }
481ce733
QT		 6876
6877 /* disable ZIO at start time. */
6878 if (!vha->flags.init_done) {
6879 uint32_t tmp;
6880 tmp = le32_to_cpu(icb->firmware_options_2);
6881 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
6882 icb->firmware_options_2 = cpu_to_le32(tmp);
6883 }
6884
aa230bc5
AE		 6885}
6886
6887void
6888qlt_83xx_iospace_config(struct qla_hw_data *ha)
6889{
6890 if (!QLA_TGT_MODE_ENABLED())
6891 return;
6892
6893 ha->msix_count += 1; /* For ATIO Q */
6894}
6895
2d70c103
NB		 6896
6897void
6898qlt_modify_vp_config(struct scsi_qla_host *vha,
6899 struct vp_config_entry_24xx *vpmod)
6900{
ead03855
QT		 6901 /* enable target mode. Bit5 = 1 => disable */
6902 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 6903 vpmod->options_idx1 &= ~BIT_5;
726b8548 6904
ead03855 6905 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 6906 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 6907 vpmod->options_idx1 &= ~BIT_4;
6908}
6909
6910void
6911qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
6912{
482c9dc7
QT		 6913 int rc;
6914
2d70c103
NB		 6915 if (!QLA_TGT_MODE_ENABLED())
6916 return;
6917
c9558869 6918 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
aa230bc5
AE		 6919 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
6920 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
6921 } else {
6922 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
6923 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
6924 }
6925
0e8cd71c
SK		 6926 mutex_init(&base_vha->vha_tgt.tgt_mutex);
6927 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 6928
6929 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
6930 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
6931 qlt_unknown_atio_work_fn);
6932
2d70c103 6933 qlt_clear_mode(base_vha);
482c9dc7
QT		 6934
6935 rc = btree_init32(&ha->tgt.host_map);
6936 if (rc)
83548fe2 6937 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 6938 "Unable to initialize ha->host_map btree\n");
6939
6940 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 6941}
6942
aa230bc5
AE		 6943irqreturn_t
6944qla83xx_msix_atio_q(int irq, void *dev_id)
6945{
6946 struct rsp_que *rsp;
6947 scsi_qla_host_t *vha;
6948 struct qla_hw_data *ha;
6949 unsigned long flags;
6950
6951 rsp = (struct rsp_que *) dev_id;
6952 ha = rsp->hw;
6953 vha = pci_get_drvdata(ha->pdev);
6954
2f424b9b 6955 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 6956
2f424b9b 6957 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 6958
2f424b9b 6959 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 6960
6961 return IRQ_HANDLED;
6962}
6963
2f424b9b
QT		 6964static void
6965qlt_handle_abts_recv_work(struct work_struct *work)
6966{
6967 struct qla_tgt_sess_op *op = container_of(work,
6968 struct qla_tgt_sess_op, work);
6969 scsi_qla_host_t *vha = op->vha;
6970 struct qla_hw_data *ha = vha->hw;
6971 unsigned long flags;
6972
7c3f8fd1
QT		 6973 if (qla2x00_reset_active(vha) ||
6974 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 6975 return;
6976
6977 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
6978 qlt_24xx_process_atio_queue(vha, 0);
6979 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
6980
6981 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 6982 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 6983 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 6984
6985 kfree(op);
2f424b9b
QT		 6986}
6987
6988void
82de802a
QT		 6989qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
6990 response_t *pkt)
2f424b9b
QT		 6991{
6992 struct qla_tgt_sess_op *op;
6993
6994 op = kzalloc(sizeof(*op), GFP_ATOMIC);
6995
6996 if (!op) {
6997 /* do not reach for ATIO queue here. This is best effort err
6998 * recovery at this point.
6999 */
82de802a 7000 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 7001 return;
7002 }
7003
7004 memcpy(&op->atio, pkt, sizeof(*pkt));
7005 op->vha = vha;
7c3f8fd1 7006 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 7007 op->rsp = rsp;
2f424b9b
QT		 7008 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7009 queue_work(qla_tgt_wq, &op->work);
7010 return;
7011}
7012
2d70c103
NB		 7013int
7014qlt_mem_alloc(struct qla_hw_data *ha)
7015{
7016 if (!QLA_TGT_MODE_ENABLED())
7017 return 0;
7018
7019 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
7020 MAX_MULTI_ID_FABRIC, GFP_KERNEL);
7021 if (!ha->tgt.tgt_vp_map)
7022 return -ENOMEM;
7023
7024 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7025 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7026 &ha->tgt.atio_dma, GFP_KERNEL);
7027 if (!ha->tgt.atio_ring) {
7028 kfree(ha->tgt.tgt_vp_map);
7029 return -ENOMEM;
7030 }
7031 return 0;
7032}
7033
7034void
7035qlt_mem_free(struct qla_hw_data *ha)
7036{
7037 if (!QLA_TGT_MODE_ENABLED())
7038 return;
7039
7040 if (ha->tgt.atio_ring) {
7041 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7042 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7043 ha->tgt.atio_dma);
7044 }
7045 kfree(ha->tgt.tgt_vp_map);
7046}
7047
7048/* vport_slock to be held by the caller */
7049void
7050qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7051{
482c9dc7
QT		 7052 void *slot;
7053 u32 key;
7054 int rc;
7055
2d70c103
NB		 7056 if (!QLA_TGT_MODE_ENABLED())
7057 return;
7058
482c9dc7
QT		 7059 key = vha->d_id.b24;
7060
2d70c103
NB		 7061 switch (cmd) {
7062 case SET_VP_IDX:
7063 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7064 break;
7065 case SET_AL_PA:
482c9dc7
QT		 7066 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7067 if (!slot) {
83548fe2 7068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7069 "Save vha in host_map %p %06x\n", vha, key);
7070 rc = btree_insert32(&vha->hw->tgt.host_map,
7071 key, vha, GFP_ATOMIC);
7072 if (rc)
83548fe2 7073 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7074 "Unable to insert s_id into host_map: %06x\n",
7075 key);
7076 return;
7077 }
83548fe2
QT		 7078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7079 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7080 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7081 break;
7082 case RESET_VP_IDX:
7083 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7084 break;
7085 case RESET_AL_PA:
83548fe2 7086 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7087 "clear vha in host_map %p %06x\n", vha, key);
7088 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7089 if (slot)
7090 btree_remove32(&vha->hw->tgt.host_map, key);
7091 vha->d_id.b24 = 0;
2d70c103
NB		 7092 break;
7093 }
7094}
7095
482c9dc7
QT		 7096void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7097{
482c9dc7
QT		 7098
7099 if (!vha->d_id.b24) {
482c9dc7
QT		 7100 vha->d_id = id;
7101 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7 7102 } else if (vha->d_id.b24 != id.b24) {
482c9dc7
QT		 7103 qlt_update_vp_map(vha, RESET_AL_PA);
7104 vha->d_id = id;
7105 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7
QT		 7106 }
7107}
7108
2d70c103
NB		 7109static int __init qlt_parse_ini_mode(void)
7110{
7111 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7112 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7113 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7114 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7115 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7116 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7117 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7118 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7119 else
7120 return false;
7121
7122 return true;
7123}
7124
7125int __init qlt_init(void)
7126{
7127 int ret;
7128
7129 if (!qlt_parse_ini_mode()) {
7130 ql_log(ql_log_fatal, NULL, 0xe06b,
7131 "qlt_parse_ini_mode() failed\n");
7132 return -EINVAL;
7133 }
7134
7135 if (!QLA_TGT_MODE_ENABLED())
7136 return 0;
7137
2d70c103
NB		 7138 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7139 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7140 qla_tgt_mgmt_cmd), 0, NULL);
7141 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7142 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7143 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7144 return -ENOMEM;
2d70c103
NB		 7145 }
7146
b7bd104e 7147 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7148 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7149 0, NULL);
b7bd104e
AP		 7150
7151 if (!qla_tgt_plogi_cachep) {
7152 ql_log(ql_log_fatal, NULL, 0xe06d,
7153 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7154 ret = -ENOMEM;
7155 goto out_mgmt_cmd_cachep;
7156 }
7157
2d70c103
NB		 7158 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7159 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7160 if (!qla_tgt_mgmt_cmd_mempool) {
7161 ql_log(ql_log_fatal, NULL, 0xe06e,
7162 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7163 ret = -ENOMEM;
b7bd104e 7164 goto out_plogi_cachep;
2d70c103
NB		 7165 }
7166
7167 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7168 if (!qla_tgt_wq) {
7169 ql_log(ql_log_fatal, NULL, 0xe06f,
7170 "alloc_workqueue for qla_tgt_wq failed\n");
7171 ret = -ENOMEM;
7172 goto out_cmd_mempool;
7173 }
7174 /*
7175 * Return 1 to signal that initiator-mode is being disabled
7176 */
7177 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7178
7179out_cmd_mempool:
7180 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7181out_plogi_cachep:
7182 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7183out_mgmt_cmd_cachep:
7184 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7185 return ret;
7186}
7187
7188void qlt_exit(void)
7189{
7190 if (!QLA_TGT_MODE_ENABLED())
7191 return;
7192
7193 destroy_workqueue(qla_tgt_wq);
7194 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7195 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7196 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7197}
Linux 6.x block layer and io_uring tree(s)