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scsi: qla2xxx: Introduce the dsd32 and dsd64 data structures
[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);
6b0431d6
QT		 144static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
145static inline uint32_t qlt_make_handle(struct qla_qpair *);
8f6fc8d4 146
2d70c103
NB		 147/*
148 * Global Variables
149 */
2d70c103 150static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b5d15312 151struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 152static mempool_t *qla_tgt_mgmt_cmd_mempool;
153static struct workqueue_struct *qla_tgt_wq;
154static DEFINE_MUTEX(qla_tgt_mutex);
155static LIST_HEAD(qla_tgt_glist);
156
be25152c
QT		 157static const char *prot_op_str(u32 prot_op)
158{
159 switch (prot_op) {
160 case TARGET_PROT_NORMAL: return "NORMAL";
161 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
162 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
163 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
164 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
165 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
166 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
167 default: return "UNKNOWN";
168 }
169}
170
df673274
AP		 171/* This API intentionally takes dest as a parameter, rather than returning
172 * int value to avoid caller forgetting to issue wmb() after the store */
173void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
174{
175 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
176 *dest = atomic_inc_return(&base_vha->generation_tick);
177 /* memory barrier */
178 wmb();
179}
180
2d70c103
NB		 181/* Might release hw lock, then reaquire!! */
182static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
183{
184 /* Send marker if required */
185 if (unlikely(vha->marker_needed != 0)) {
186 int rc = qla2x00_issue_marker(vha, vha_locked);
bd432bb5 187
2d70c103
NB		 188 if (rc != QLA_SUCCESS) {
189 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
190 "qla_target(%d): issue_marker() failed\n",
191 vha->vp_idx);
192 }
193 return rc;
194 }
195 return QLA_SUCCESS;
196}
197
198static inline
199struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
200 uint8_t *d_id)
201{
482c9dc7
QT		 202 struct scsi_qla_host *host;
203 uint32_t key = 0;
2d70c103 204
482c9dc7
QT		 205 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) &&
206 (vha->d_id.b.al_pa == d_id[2]))
2d70c103
NB		 207 return vha;
208
482c9dc7
QT		 209 key = (uint32_t)d_id[0] << 16;
210 key |= (uint32_t)d_id[1] << 8;
211 key |= (uint32_t)d_id[2];
2d70c103 212
482c9dc7
QT		 213 host = btree_lookup32(&vha->hw->tgt.host_map, key);
214 if (!host)
604e2e57 215 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
83548fe2 216 "Unable to find host %06x\n", key);
482c9dc7
QT		 217
218 return host;
2d70c103
NB		 219}
220
221static inline
222struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
223 uint16_t vp_idx)
224{
225 struct qla_hw_data *ha = vha->hw;
226
227 if (vha->vp_idx == vp_idx)
228 return vha;
229
230 BUG_ON(ha->tgt.tgt_vp_map == NULL);
231 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
232 return ha->tgt.tgt_vp_map[vp_idx].vha;
233
234 return NULL;
235}
236
33e79977
QT		 237static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
238{
239 unsigned long flags;
240
241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
242
243 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 244 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
245 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 246 vha->hw->tgt.num_pend_cmds;
247 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
248}
249static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
250{
251 unsigned long flags;
252
253 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
254 vha->hw->tgt.num_pend_cmds--;
255 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
256}
257
41dc529a
QT		 258
259static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
82de802a 260 struct atio_from_isp *atio, uint8_t ha_locked)
41dc529a
QT		 261{
262 struct qla_tgt_sess_op *u;
263 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
264 unsigned long flags;
265
266 if (tgt->tgt_stop) {
83548fe2
QT		 267 ql_dbg(ql_dbg_async, vha, 0x502c,
268 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
269 vha->vp_idx);
41dc529a
QT		 270 goto out_term;
271 }
272
273 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 274 if (u == NULL)
41dc529a 275 goto out_term;
41dc529a
QT		 276
277 u->vha = vha;
278 memcpy(&u->atio, atio, sizeof(*atio));
279 INIT_LIST_HEAD(&u->cmd_list);
280
281 spin_lock_irqsave(&vha->cmd_list_lock, flags);
282 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
283 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
284
285 schedule_delayed_work(&vha->unknown_atio_work, 1);
286
287out:
288 return;
289
290out_term:
82de802a 291 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
41dc529a
QT		 292 goto out;
293}
294
295static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
296 uint8_t ha_locked)
297{
298 struct qla_tgt_sess_op *u, *t;
299 scsi_qla_host_t *host;
300 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
301 unsigned long flags;
302 uint8_t queued = 0;
303
304 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
305 if (u->aborted) {
83548fe2
QT		 306 ql_dbg(ql_dbg_async, vha, 0x502e,
307 "Freeing unknown %s %p, because of Abort\n",
41dc529a 308 "ATIO_TYPE7", u);
82de802a
QT		 309 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
310 &u->atio, ha_locked, 0);
41dc529a
QT		 311 goto abort;
312 }
313
314 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
315 if (host != NULL) {
604e2e57 316 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
83548fe2 317 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 318 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
319 } else if (tgt->tgt_stop) {
604e2e57 320 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
83548fe2
QT		 321 "Freeing unknown %s %p, because tgt is being stopped\n",
322 "ATIO_TYPE7", u);
82de802a
QT		 323 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
324 &u->atio, ha_locked, 0);
41dc529a 325 } else {
604e2e57 326 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
83548fe2 327 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 328 if (!queued) {
329 queued = 1;
330 schedule_delayed_work(&vha->unknown_atio_work,
331 1);
332 }
333 continue;
334 }
335
336abort:
337 spin_lock_irqsave(&vha->cmd_list_lock, flags);
338 list_del(&u->cmd_list);
339 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
340 kfree(u);
341 }
342}
343
344void qlt_unknown_atio_work_fn(struct work_struct *work)
345{
346 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
347 struct scsi_qla_host, unknown_atio_work);
348
349 qlt_try_to_dequeue_unknown_atios(vha, 0);
350}
351
3bb67df5 352static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 353 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 354{
f83adb61
QT		 355 ql_dbg(ql_dbg_tgt, vha, 0xe072,
356 "%s: qla_target(%d): type %x ox_id %04x\n",
357 __func__, vha->vp_idx, atio->u.raw.entry_type,
358 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
359
2d70c103
NB		 360 switch (atio->u.raw.entry_type) {
361 case ATIO_TYPE7:
362 {
363 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
364 atio->u.isp24.fcp_hdr.d_id);
365 if (unlikely(NULL == host)) {
366 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
367 "qla_target(%d): Received ATIO_TYPE7 "
368 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
369 atio->u.isp24.fcp_hdr.d_id[0],
370 atio->u.isp24.fcp_hdr.d_id[1],
371 atio->u.isp24.fcp_hdr.d_id[2]);
41dc529a
QT		 372
373
374 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 375 break;
376 }
41dc529a
QT		 377 if (unlikely(!list_empty(&vha->unknown_atio_list)))
378 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
379
2f424b9b 380 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 381 break;
382 }
383
384 case IMMED_NOTIFY_TYPE:
385 {
386 struct scsi_qla_host *host = vha;
387 struct imm_ntfy_from_isp *entry =
388 (struct imm_ntfy_from_isp *)atio;
389
82de802a
QT		 390 qlt_issue_marker(vha, ha_locked);
391
2d70c103
NB		 392 if ((entry->u.isp24.vp_index != 0xFF) &&
393 (entry->u.isp24.nport_handle != 0xFFFF)) {
394 host = qlt_find_host_by_vp_idx(vha,
395 entry->u.isp24.vp_index);
396 if (unlikely(!host)) {
397 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
398 "qla_target(%d): Received "
399 "ATIO (IMMED_NOTIFY_TYPE) "
400 "with unknown vp_index %d\n",
401 vha->vp_idx, entry->u.isp24.vp_index);
402 break;
403 }
404 }
2f424b9b 405 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 406 break;
407 }
408
41dc529a
QT		 409 case VP_RPT_ID_IOCB_TYPE:
410 qla24xx_report_id_acquisition(vha,
411 (struct vp_rpt_id_entry_24xx *)atio);
412 break;
413
414 case ABTS_RECV_24XX:
415 {
416 struct abts_recv_from_24xx *entry =
417 (struct abts_recv_from_24xx *)atio;
418 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
419 entry->vp_index);
8f6fc8d4
QT		 420 unsigned long flags;
421
41dc529a 422 if (unlikely(!host)) {
83548fe2 423 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 424 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
425 "received, with unknown vp_index %d\n",
426 vha->vp_idx, entry->vp_index);
427 break;
428 }
8f6fc8d4
QT		 429 if (!ha_locked)
430 spin_lock_irqsave(&host->hw->hardware_lock, flags);
431 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
432 if (!ha_locked)
433 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 434 break;
41dc529a
QT		 435 }
436
437 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
438
2d70c103
NB		 439 default:
440 ql_dbg(ql_dbg_tgt, vha, 0xe040,
441 "qla_target(%d): Received unknown ATIO atio "
442 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
443 break;
444 }
445
3bb67df5 446 return false;
2d70c103
NB		 447}
448
82de802a
QT		 449void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
450 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 451{
452 switch (pkt->entry_type) {
f83adb61
QT		 453 case CTIO_CRC2:
454 ql_dbg(ql_dbg_tgt, vha, 0xe073,
455 "qla_target(%d):%s: CRC2 Response pkt\n",
456 vha->vp_idx, __func__);
81881861 457 /* fall through */
2d70c103
NB		 458 case CTIO_TYPE7:
459 {
460 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
461 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
462 entry->vp_index);
463 if (unlikely(!host)) {
464 ql_dbg(ql_dbg_tgt, vha, 0xe041,
465 "qla_target(%d): Response pkt (CTIO_TYPE7) "
466 "received, with unknown vp_index %d\n",
467 vha->vp_idx, entry->vp_index);
468 break;
469 }
82de802a 470 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 471 break;
472 }
473
474 case IMMED_NOTIFY_TYPE:
475 {
476 struct scsi_qla_host *host = vha;
477 struct imm_ntfy_from_isp *entry =
478 (struct imm_ntfy_from_isp *)pkt;
479
480 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
481 if (unlikely(!host)) {
482 ql_dbg(ql_dbg_tgt, vha, 0xe042,
483 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
484 "received, with unknown vp_index %d\n",
485 vha->vp_idx, entry->u.isp24.vp_index);
486 break;
487 }
82de802a 488 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 489 break;
490 }
491
492 case NOTIFY_ACK_TYPE:
493 {
494 struct scsi_qla_host *host = vha;
495 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
496
497 if (0xFF != entry->u.isp24.vp_index) {
498 host = qlt_find_host_by_vp_idx(vha,
499 entry->u.isp24.vp_index);
500 if (unlikely(!host)) {
501 ql_dbg(ql_dbg_tgt, vha, 0xe043,
502 "qla_target(%d): Response "
503 "pkt (NOTIFY_ACK_TYPE) "
504 "received, with unknown "
505 "vp_index %d\n", vha->vp_idx,
506 entry->u.isp24.vp_index);
507 break;
508 }
509 }
82de802a 510 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 511 break;
512 }
513
514 case ABTS_RECV_24XX:
515 {
516 struct abts_recv_from_24xx *entry =
517 (struct abts_recv_from_24xx *)pkt;
518 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
519 entry->vp_index);
520 if (unlikely(!host)) {
521 ql_dbg(ql_dbg_tgt, vha, 0xe044,
522 "qla_target(%d): Response pkt "
523 "(ABTS_RECV_24XX) received, with unknown "
524 "vp_index %d\n", vha->vp_idx, entry->vp_index);
525 break;
526 }
82de802a 527 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 528 break;
529 }
530
531 case ABTS_RESP_24XX:
532 {
533 struct abts_resp_to_24xx *entry =
534 (struct abts_resp_to_24xx *)pkt;
535 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
536 entry->vp_index);
537 if (unlikely(!host)) {
538 ql_dbg(ql_dbg_tgt, vha, 0xe045,
539 "qla_target(%d): Response pkt "
540 "(ABTS_RECV_24XX) received, with unknown "
541 "vp_index %d\n", vha->vp_idx, entry->vp_index);
542 break;
543 }
82de802a 544 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 545 break;
546 }
2d70c103 547 default:
82de802a 548 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 549 break;
550 }
551
552}
553
b7bd104e
AP		 554/*
555 * All qlt_plogi_ack_t operations are protected by hardware_lock
556 */
726b8548
QT		 557static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
558 struct imm_ntfy_from_isp *ntfy, int type)
559{
560 struct qla_work_evt *e;
bd432bb5 561
726b8548
QT		 562 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
563 if (!e)
564 return QLA_FUNCTION_FAILED;
565
566 e->u.nack.fcport = fcport;
567 e->u.nack.type = type;
568 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
569 return qla2x00_post_work(vha, e);
570}
571
572static
25ff6af1 573void qla2x00_async_nack_sp_done(void *s, int res)
726b8548 574{
726b8548 575 struct srb *sp = (struct srb *)s;
25ff6af1 576 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 577 unsigned long flags;
578
83548fe2
QT		 579 ql_dbg(ql_dbg_disc, vha, 0x20f2,
580 "Async done-%s res %x %8phC type %d\n",
581 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 582
583 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
584 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 585 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 586
587 switch (sp->type) {
588 case SRB_NACK_PLOGI:
589 sp->fcport->login_gen++;
590 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
591 sp->fcport->logout_on_delete = 1;
5b33469a 592 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
3515832c 593 sp->fcport->send_els_logo = 0;
726b8548
QT		 594 break;
595
596 case SRB_NACK_PRLI:
597 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
598 sp->fcport->deleted = 0;
3515832c 599 sp->fcport->send_els_logo = 0;
726b8548
QT		 600
601 if (!sp->fcport->login_succ &&
602 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
603 sp->fcport->login_succ = 1;
604
605 vha->fcport_count++;
0aca7784 606 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
cd4ed6b4 607 qla24xx_sched_upd_fcport(sp->fcport);
0aca7784 608 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
29528491
QT		 609 } else {
610 sp->fcport->login_retry = 0;
611 sp->fcport->disc_state = DSC_LOGIN_COMPLETE;
612 sp->fcport->deleted = 0;
613 sp->fcport->logout_on_delete = 1;
726b8548
QT		 614 }
615 break;
616
617 case SRB_NACK_LOGO:
618 sp->fcport->login_gen++;
619 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
620 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
621 break;
622 }
623 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
624
25ff6af1 625 sp->free(sp);
726b8548
QT		 626}
627
628int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
629 struct imm_ntfy_from_isp *ntfy, int type)
630{
631 int rval = QLA_FUNCTION_FAILED;
632 srb_t *sp;
633 char *c = NULL;
634
635 fcport->flags |= FCF_ASYNC_SENT;
636 switch (type) {
637 case SRB_NACK_PLOGI:
638 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
639 c = "PLOGI";
640 break;
641 case SRB_NACK_PRLI:
642 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 643 fcport->deleted = 0;
726b8548
QT		 644 c = "PRLI";
645 break;
646 case SRB_NACK_LOGO:
647 fcport->fw_login_state = DSC_LS_LOGO_PEND;
648 c = "LOGO";
649 break;
650 }
651
652 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
653 if (!sp)
654 goto done;
655
656 sp->type = type;
657 sp->name = "nack";
658
e74e7d95 659 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 660 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
661
662 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
726b8548
QT		 663 sp->done = qla2x00_async_nack_sp_done;
664
83548fe2
QT		 665 ql_dbg(ql_dbg_disc, vha, 0x20f4,
666 "Async-%s %8phC hndl %x %s\n",
667 sp->name, fcport->port_name, sp->handle, c);
726b8548 668
f233e8c0
BK		 669 rval = qla2x00_start_sp(sp);
670 if (rval != QLA_SUCCESS)
671 goto done_free_sp;
672
726b8548
QT		 673 return rval;
674
675done_free_sp:
25ff6af1 676 sp->free(sp);
726b8548
QT		 677done:
678 fcport->flags &= ~FCF_ASYNC_SENT;
679 return rval;
680}
681
682void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
683{
684 fc_port_t *t;
685 unsigned long flags;
686
687 switch (e->u.nack.type) {
688 case SRB_NACK_PRLI:
1021f0bc
QT		 689 t = e->u.nack.fcport;
690 flush_work(&t->del_work);
691 flush_work(&t->free_work);
726b8548
QT		 692 mutex_lock(&vha->vha_tgt.tgt_mutex);
693 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
694 mutex_unlock(&vha->vha_tgt.tgt_mutex);
695 if (t) {
83548fe2 696 ql_log(ql_log_info, vha, 0xd034,
726b8548
QT		 697 "%s create sess success %p", __func__, t);
698 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
699 /* create sess has an extra kref */
700 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
701 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
702 }
703 break;
704 }
705 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
845bbb09 706 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
726b8548
QT		 707}
708
709void qla24xx_delete_sess_fn(struct work_struct *work)
710{
711 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
712 struct qla_hw_data *ha = fcport->vha->hw;
713 unsigned long flags;
714
715 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
716
717 if (fcport->se_sess) {
718 ha->tgt.tgt_ops->shutdown_sess(fcport);
719 ha->tgt.tgt_ops->put_sess(fcport);
720 } else {
721 qlt_unreg_sess(fcport);
722 }
723 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
724}
725
726/*
727 * Called from qla2x00_reg_remote_port()
728 */
729void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
730{
731 struct qla_hw_data *ha = vha->hw;
732 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
733 struct fc_port *sess = fcport;
734 unsigned long flags;
735
736 if (!vha->hw->tgt.tgt_ops)
737 return;
738
739 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
740 if (tgt->tgt_stop) {
741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
742 return;
743 }
744
745 if (fcport->disc_state == DSC_DELETE_PEND) {
746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
747 return;
748 }
749
750 if (!sess->se_sess) {
751 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
752
753 mutex_lock(&vha->vha_tgt.tgt_mutex);
754 sess = qlt_create_sess(vha, fcport, false);
755 mutex_unlock(&vha->vha_tgt.tgt_mutex);
756
757 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
758 } else {
759 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
760 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
761 return;
762 }
763
764 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 765 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 766 "%s: kref_get fail sess %8phC \n",
767 __func__, sess->port_name);
768 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
769 return;
770 }
771
772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
773 "qla_target(%u): %ssession for port %8phC "
774 "(loop ID %d) reappeared\n", vha->vp_idx,
775 sess->local ? "local " : "", sess->port_name, sess->loop_id);
776
777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
778 "Reappeared sess %p\n", sess);
779
780 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
781 fcport->loop_id,
782 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
783 }
784
785 if (sess && sess->local) {
786 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
787 "qla_target(%u): local session for "
788 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
789 fcport->port_name, sess->loop_id);
790 sess->local = 0;
791 }
792 ha->tgt.tgt_ops->put_sess(sess);
793 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
794}
b7bd104e
AP		 795
796/*
797 * This is a zero-base ref-counting solution, since hardware_lock
798 * guarantees that ref_count is not modified concurrently.
799 * Upon successful return content of iocb is undefined
800 */
5d964837 801static struct qlt_plogi_ack_t *
b7bd104e
AP		 802qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
803 struct imm_ntfy_from_isp *iocb)
804{
5d964837 805 struct qlt_plogi_ack_t *pla;
b7bd104e
AP		 806
807 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
808 if (pla->id.b24 == id->b24) {
48acad09
QT		 809 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
810 "%s %d %8phC Term INOT due to new INOT",
811 __func__, __LINE__,
812 pla->iocb.u.isp24.port_name);
b7bd104e 813 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 814 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 815 return pla;
816 }
817 }
818
819 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
820 if (!pla) {
821 ql_dbg(ql_dbg_async, vha, 0x5088,
822 "qla_target(%d): Allocation of plogi_ack failed\n",
823 vha->vp_idx);
824 return NULL;
825 }
826
5d964837 827 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 828 pla->id = *id;
829 list_add_tail(&pla->list, &vha->plogi_ack_list);
830
831 return pla;
832}
833
726b8548 834void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 835 struct qlt_plogi_ack_t *pla)
b7bd104e 836{
5d964837 837 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 838 port_id_t port_id;
839 uint16_t loop_id;
840 fc_port_t *fcport = pla->fcport;
841
b7bd104e
AP		 842 BUG_ON(!pla->ref_count);
843 pla->ref_count--;
844
845 if (pla->ref_count)
846 return;
847
726b8548 848 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 849 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 850 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
851 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
852 iocb->u.isp24.port_id[0],
853 le16_to_cpu(iocb->u.isp24.nport_handle),
854 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 855
856 port_id.b.domain = iocb->u.isp24.port_id[2];
857 port_id.b.area = iocb->u.isp24.port_id[1];
858 port_id.b.al_pa = iocb->u.isp24.port_id[0];
859 port_id.b.rsvd_1 = 0;
860
861 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
862
863 fcport->loop_id = loop_id;
864 fcport->d_id = port_id;
9cd883f0
QT		 865 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
866 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
867 else
868 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
726b8548
QT		 869
870 list_for_each_entry(fcport, &vha->vp_fcports, list) {
871 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
872 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
873 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
874 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
875 }
b7bd104e
AP		 876
877 list_del(&pla->list);
878 kmem_cache_free(qla_tgt_plogi_cachep, pla);
879}
880
726b8548 881void
5d964837
QT		 882qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
883 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 884{
5d964837 885 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 886 /* Inc ref_count first because link might already be pointing at pla */
887 pla->ref_count++;
888
726b8548
QT		 889 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
890 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
891 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
892 sess, link, sess->port_name,
893 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
894 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
895 pla->ref_count, pla, link);
896
5ef696aa
QT		 897 if (link == QLT_PLOGI_LINK_CONFLICT) {
898 switch (sess->disc_state) {
899 case DSC_DELETED:
900 case DSC_DELETE_PEND:
901 pla->ref_count--;
902 return;
903 default:
904 break;
905 }
906 }
907
b7bd104e
AP		 908 if (sess->plogi_link[link])
909 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
910
726b8548
QT		 911 if (link == QLT_PLOGI_LINK_SAME_WWN)
912 pla->fcport = sess;
b7bd104e
AP		 913
914 sess->plogi_link[link] = pla;
915}
916
71cdc079
AP		 917typedef struct {
918 /* These fields must be initialized by the caller */
919 port_id_t id;
920 /*
921 * number of cmds dropped while we were waiting for
922 * initiator to ack LOGO initialize to 1 if LOGO is
923 * triggered by a command, otherwise, to 0
924 */
925 int cmd_count;
926
927 /* These fields are used by callee */
928 struct list_head list;
929} qlt_port_logo_t;
930
931static void
932qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
933{
934 qlt_port_logo_t *tmp;
935 int res;
936
937 mutex_lock(&vha->vha_tgt.tgt_mutex);
938
939 list_for_each_entry(tmp, &vha->logo_list, list) {
940 if (tmp->id.b24 == logo->id.b24) {
941 tmp->cmd_count += logo->cmd_count;
942 mutex_unlock(&vha->vha_tgt.tgt_mutex);
943 return;
944 }
945 }
946
947 list_add_tail(&logo->list, &vha->logo_list);
948
949 mutex_unlock(&vha->vha_tgt.tgt_mutex);
950
951 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
952
953 mutex_lock(&vha->vha_tgt.tgt_mutex);
954 list_del(&logo->list);
955 mutex_unlock(&vha->vha_tgt.tgt_mutex);
956
b7bd104e
AP		 957 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
958 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
959 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
960 logo->cmd_count, res);
71cdc079
AP		 961}
962
9dd9686b 963void qlt_free_session_done(struct work_struct *work)
2d70c103 964{
5d964837 965 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 966 free_work);
967 struct qla_tgt *tgt = sess->tgt;
968 struct scsi_qla_host *vha = sess->vha;
969 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 970 unsigned long flags;
971 bool logout_started = false;
41dc529a 972 scsi_qla_host_t *base_vha;
9cd883f0
QT		 973 struct qlt_plogi_ack_t *own =
974 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
a6ca8878
AP		 975
976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
977 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 978 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 979 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 980 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 981 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 982 sess->send_els_logo);
2d70c103 983
726b8548 984 if (!IS_SW_RESV_ADDR(sess->d_id)) {
2137490f
QT		 985 qla2x00_mark_device_lost(vha, sess, 0, 0);
986
41dc529a
QT		 987 if (sess->send_els_logo) {
988 qlt_port_logo_t logo;
71cdc079 989
41dc529a
QT		 990 logo.id = sess->d_id;
991 logo.cmd_count = 0;
cb97f2c2
QT		 992 if (!own)
993 qlt_send_first_logo(vha, &logo);
a2390348 994 sess->send_els_logo = 0;
41dc529a
QT		 995 }
996
ba743f91 997 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 998 int rc;
999
9cd883f0
QT		 1000 if (!own ||
1001 (own &&
1002 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
1003 rc = qla2x00_post_async_logout_work(vha, sess,
1004 NULL);
1005 if (rc != QLA_SUCCESS)
1006 ql_log(ql_log_warn, vha, 0xf085,
1007 "Schedule logo failed sess %p rc %d\n",
1008 sess, rc);
1009 else
1010 logout_started = true;
1011 } else if (own && (own->iocb.u.isp24.status_subcode ==
1012 ELS_PRLI) && ha->flags.rida_fmt2) {
1013 rc = qla2x00_post_async_prlo_work(vha, sess,
1014 NULL);
1015 if (rc != QLA_SUCCESS)
1016 ql_log(ql_log_warn, vha, 0xf085,
1017 "Schedule PRLO failed sess %p rc %d\n",
1018 sess, rc);
1019 else
1020 logout_started = true;
1021 }
41dc529a 1022 }
726b8548 1023 }
a6ca8878 1024
2d70c103
NB		 1025 /*
1026 * Release the target session for FC Nexus from fabric module code.
1027 */
1028 if (sess->se_sess != NULL)
1029 ha->tgt.tgt_ops->free_session(sess);
1030
a6ca8878
AP		 1031 if (logout_started) {
1032 bool traced = false;
1033
6aa7de05 1034 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878
AP		 1035 if (!traced) {
1036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
1037 "%s: waiting for sess %p logout\n",
1038 __func__, sess);
1039 traced = true;
1040 }
1041 msleep(100);
1042 }
1043
726b8548 1044 ql_dbg(ql_dbg_disc, vha, 0xf087,
9cd883f0 1045 "%s: sess %p logout completed\n", __func__, sess);
41dc529a
QT		 1046 }
1047
1048 if (sess->logo_ack_needed) {
1049 sess->logo_ack_needed = 0;
1050 qla24xx_async_notify_ack(vha, sess,
1051 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1052 }
1053
726b8548
QT		 1054 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1055 if (sess->se_sess) {
1056 sess->se_sess = NULL;
1057 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1058 tgt->sess_count--;
1059 }
1060
1061 sess->disc_state = DSC_DELETED;
1062 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1063 sess->deleted = QLA_SESS_DELETED;
726b8548
QT		 1064
1065 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1066 vha->fcport_count--;
1067 sess->login_succ = 0;
1068 }
1069
ba743f91 1070 qla2x00_clear_loop_id(sess);
726b8548
QT		 1071
1072 if (sess->conflict) {
1073 sess->conflict->login_pause = 0;
1074 sess->conflict = NULL;
1075 if (!test_bit(UNLOADING, &vha->dpc_flags))
1076 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1077 }
1078
b7bd104e 1079 {
5d964837 1080 struct qlt_plogi_ack_t *con =
b7bd104e 1081 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1082 struct imm_ntfy_from_isp *iocb;
bd432bb5 1083
48acad09 1084 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
b7bd104e
AP		 1085
1086 if (con) {
5d964837 1087 iocb = &con->iocb;
b7bd104e 1088 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1089 "se_sess %p / sess %p port %8phC is gone,"
1090 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1091 sess->se_sess, sess, sess->port_name,
1092 own ? "releasing own PLOGI" : "no own PLOGI pending",
1093 own ? own->ref_count : -1,
1094 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1095 qlt_plogi_ack_unref(vha, con);
726b8548 1096 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1097 } else {
1098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1099 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1100 sess->se_sess, sess, sess->port_name,
1101 own ? "releasing own PLOGI" :
1102 "no own PLOGI pending",
1103 own ? own->ref_count : -1);
1104 }
1105
726b8548
QT		 1106 if (own) {
1107 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1108 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1109 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1110 }
b7bd104e 1111 }
1ae634eb 1112
5d964837
QT		 1113 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1114
2d70c103 1115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
726b8548
QT		 1116 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1117 sess, sess->port_name, vha->fcport_count);
2d70c103 1118
726b8548 1119 if (tgt && (tgt->sess_count == 0))
2d70c103 1120 wake_up_all(&tgt->waitQ);
726b8548
QT		 1121
1122 if (vha->fcport_count == 0)
1123 wake_up_all(&vha->fcport_waitQ);
1124
41dc529a 1125 base_vha = pci_get_drvdata(ha->pdev);
1ae634eb
QT		 1126
1127 sess->free_pending = 0;
1128
41dc529a
QT		 1129 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags))
1130 return;
1131
a4239945
QT		 1132 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
1133 switch (vha->host->active_mode) {
1134 case MODE_INITIATOR:
1135 case MODE_DUAL:
1136 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1137 qla2xxx_wake_dpc(vha);
1138 break;
1139 case MODE_TARGET:
1140 default:
1141 /* no-op */
1142 break;
1143 }
726b8548 1144 }
2d70c103
NB		 1145}
1146
7560151b 1147/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1148void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1149{
1150 struct scsi_qla_host *vha = sess->vha;
1ae634eb 1151 unsigned long flags;
2d70c103 1152
83548fe2 1153 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1154 "%s sess %p for deletion %8phC\n",
1155 __func__, sess, sess->port_name);
1156
1ae634eb
QT		 1157 spin_lock_irqsave(&sess->vha->work_lock, flags);
1158 if (sess->free_pending) {
1159 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1160 return;
1161 }
1162 sess->free_pending = 1;
1163 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1164
36c78452
QT		 1165 if (sess->se_sess)
1166 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1167
a6ca8878 1168 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
726b8548
QT		 1169 sess->disc_state = DSC_DELETE_PEND;
1170 sess->last_rscn_gen = sess->rscn_gen;
1171 sess->last_login_gen = sess->login_gen;
2d70c103 1172
9dd9686b
DT		 1173 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1174 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1175 sess->nvme_flag |= NVME_FLAG_DELETING;
a5d42f4c 1176 schedule_work(&sess->nvme_del_work);
9dd9686b
DT		 1177 } else {
1178 INIT_WORK(&sess->free_work, qlt_free_session_done);
1179 schedule_work(&sess->free_work);
1180 }
2d70c103 1181}
5d964837 1182EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1183
2d70c103
NB		 1184static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1185{
1186 struct qla_hw_data *ha = vha->hw;
5d964837 1187 struct fc_port *sess = NULL;
2d70c103
NB		 1188 uint16_t loop_id;
1189 int res = 0;
1190 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1191 unsigned long flags;
2d70c103
NB		 1192
1193 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1194 if (loop_id == 0xFFFF) {
2d70c103 1195 /* Global event */
b2032fd5 1196 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1197 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1198 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1200 } else {
7560151b 1201 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1202 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1203 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1204 }
1205
1206 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1207 "Using sess for qla_tgt_reset: %p\n", sess);
1208 if (!sess) {
1209 res = -ESRCH;
1210 return res;
1211 }
1212
1213 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1214 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1215 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1216 mcmd, loop_id);
1217
bb1181c9 1218 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1219}
1220
726b8548
QT		 1221static void qla24xx_chk_fcp_state(struct fc_port *sess)
1222{
7c3f8fd1 1223 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1224 sess->logout_on_delete = 0;
1225 sess->logo_ack_needed = 0;
1226 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1227 sess->scan_state = 0;
1228 }
1229}
1230
94cff6e1 1231void qlt_schedule_sess_for_deletion(struct fc_port *sess)
2d70c103
NB		 1232{
1233 struct qla_tgt *tgt = sess->tgt;
d8630bb9 1234 unsigned long flags;
cd4ed6b4 1235 u16 sec;
2d70c103 1236
cd4ed6b4
QT		 1237 switch (sess->disc_state) {
1238 case DSC_DELETE_PEND:
726b8548 1239 return;
cd4ed6b4 1240 case DSC_DELETED:
726b8548
QT		 1241 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1242 wake_up_all(&tgt->waitQ);
1243 if (sess->vha->fcport_count == 0)
1244 wake_up_all(&sess->vha->fcport_waitQ);
1245
1246 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1247 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878 1248 return;
cd4ed6b4
QT		 1249 break;
1250 case DSC_UPD_FCPORT:
1251 /*
1252 * This port is not done reporting to upper layer.
1253 * let it finish
1254 */
1255 sess->next_disc_state = DSC_DELETE_PEND;
1256 sec = jiffies_to_msecs(jiffies -
1257 sess->jiffies_at_registration)/1000;
1258 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1259 sess->sec_since_registration = sec;
1260 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1261 "%s %8phC : Slow Rport registration(%d Sec)\n",
1262 __func__, sess->port_name, sec);
1263 }
1264 return;
1265 default:
1266 break;
a6ca8878 1267 }
2d70c103 1268
49d7bd36 1269 spin_lock_irqsave(&sess->vha->work_lock, flags);
d8630bb9 1270 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
49d7bd36 1271 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
d8630bb9
QT		 1272 return;
1273 }
726b8548 1274 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
49d7bd36 1275 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
d8630bb9
QT		 1276
1277 sess->disc_state = DSC_DELETE_PEND;
1278
726b8548 1279 qla24xx_chk_fcp_state(sess);
2d70c103 1280
726b8548 1281 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
5c640053
QT		 1282 "Scheduling sess %p for deletion %8phC\n",
1283 sess, sess->port_name);
2d70c103 1284
a01c77d2 1285 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn);
1c6cacf4 1286 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
726b8548 1287}
2d70c103 1288
c5701042 1289static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1290{
5d964837
QT		 1291 struct fc_port *sess;
1292 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1293
5d964837
QT		 1294 list_for_each_entry(sess, &vha->vp_fcports, list) {
1295 if (sess->se_sess)
94cff6e1 1296 qlt_schedule_sess_for_deletion(sess);
5d964837 1297 }
2d70c103
NB		 1298
1299 /* At this point tgt could be already dead */
1300}
1301
1302static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
1303 uint16_t *loop_id)
1304{
1305 struct qla_hw_data *ha = vha->hw;
1306 dma_addr_t gid_list_dma;
1307 struct gid_list_info *gid_list;
1308 char *id_iter;
1309 int res, rc, i;
1310 uint16_t entries;
1311
1312 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1313 &gid_list_dma, GFP_KERNEL);
1314 if (!gid_list) {
1315 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1316 "qla_target(%d): DMA Alloc failed of %u\n",
1317 vha->vp_idx, qla2x00_gid_list_size(ha));
1318 return -ENOMEM;
1319 }
1320
1321 /* Get list of logged in devices */
15f30a57 1322 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1323 if (rc != QLA_SUCCESS) {
1324 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1325 "qla_target(%d): get_id_list() failed: %x\n",
1326 vha->vp_idx, rc);
71cdc079 1327 res = -EBUSY;
2d70c103
NB		 1328 goto out_free_id_list;
1329 }
1330
1331 id_iter = (char *)gid_list;
71cdc079 1332 res = -ENOENT;
2d70c103
NB		 1333 for (i = 0; i < entries; i++) {
1334 struct gid_list_info *gid = (struct gid_list_info *)id_iter;
bd432bb5 1335
2d70c103
NB		 1336 if ((gid->al_pa == s_id[2]) &&
1337 (gid->area == s_id[1]) &&
1338 (gid->domain == s_id[0])) {
1339 *loop_id = le16_to_cpu(gid->loop_id);
1340 res = 0;
1341 break;
1342 }
1343 id_iter += ha->gid_list_info_size;
1344 }
1345
1346out_free_id_list:
1347 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1348 gid_list, gid_list_dma);
1349 return res;
1350}
1351
2d70c103
NB		 1352/*
1353 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1354 * Caller must put it.
1355 */
5d964837 1356static struct fc_port *qlt_create_sess(
2d70c103
NB		 1357 struct scsi_qla_host *vha,
1358 fc_port_t *fcport,
1359 bool local)
1360{
1361 struct qla_hw_data *ha = vha->hw;
726b8548 1362 struct fc_port *sess = fcport;
2d70c103 1363 unsigned long flags;
2d70c103 1364
726b8548
QT		 1365 if (vha->vha_tgt.qla_tgt->tgt_stop)
1366 return NULL;
2d70c103 1367
726b8548
QT		 1368 if (fcport->se_sess) {
1369 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1370 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1371 "%s: kref_get_unless_zero failed for %8phC\n",
1372 __func__, sess->port_name);
1373 return NULL;
2d70c103 1374 }
726b8548 1375 return fcport;
2d70c103 1376 }
0e8cd71c 1377 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1378 sess->local = local;
a6ca8878 1379
726b8548
QT		 1380 /*
1381 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1382 * session eventually ends and release corresponding nport handle.
1383 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1384 * code will adjust these flags as necessary.
1385 */
a6ca8878
AP		 1386 sess->logout_on_delete = 1;
1387 sess->keep_nport_handle = 0;
726b8548 1388 sess->logout_completed = 0;
2d70c103 1389
726b8548
QT		 1390 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1391 &fcport->port_name[0], sess) < 0) {
83548fe2 1392 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1393 "(%d) %8phC check_initiator_node_acl failed\n",
1394 vha->vp_idx, fcport->port_name);
1395 return NULL;
1396 } else {
1397 kref_init(&fcport->sess_kref);
1398 /*
1399 * Take an extra reference to ->sess_kref here to handle
1400 * fc_port access across ->tgt.sess_lock reaquire.
1401 */
1402 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1403 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1404 "%s: kref_get_unless_zero failed for %8phC\n",
1405 __func__, sess->port_name);
1406 return NULL;
1407 }
2d70c103 1408
726b8548
QT		 1409 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1410 if (!IS_SW_RESV_ADDR(sess->d_id))
1411 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1412
726b8548
QT		 1413 qlt_do_generation_tick(vha, &sess->generation);
1414 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1415 }
1416
1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1418 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1419 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1420 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1421
1422 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1423 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1424 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1425 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1426 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1427 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1428
1429 return sess;
1430}
1431
df673274
AP		 1432/*
1433 * max_gen - specifies maximum session generation
1434 * at which this deletion requestion is still valid
1435 */
1436void
1437qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1438{
0e8cd71c 1439 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1440 struct fc_port *sess = fcport;
7560151b 1441 unsigned long flags;
2d70c103
NB		 1442
1443 if (!vha->hw->tgt.tgt_ops)
1444 return;
1445
b2032fd5 1446 if (!tgt)
2d70c103
NB		 1447 return;
1448
7560151b 1449 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1450 if (tgt->tgt_stop) {
7560151b 1451 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1452 return;
1453 }
5d964837 1454 if (!sess->se_sess) {
7560151b 1455 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1456 return;
1457 }
1458
df673274 1459 if (max_gen - sess->generation < 0) {
7560151b 1460 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1461 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1462 "Ignoring stale deletion request for se_sess %p / sess %p"
1463 " for port %8phC, req_gen %d, sess_gen %d\n",
1464 sess->se_sess, sess, sess->port_name, max_gen,
1465 sess->generation);
1466 return;
1467 }
1468
2d70c103
NB		 1469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1470
1471 sess->local = 1;
7560151b 1472 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1c6cacf4 1473 qlt_schedule_sess_for_deletion(sess);
2d70c103
NB		 1474}
1475
1476static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1477{
1478 struct qla_hw_data *ha = tgt->ha;
1479 unsigned long flags;
1480 int res;
1481 /*
1482 * We need to protect against race, when tgt is freed before or
1483 * inside wake_up()
1484 */
726b8548 1485 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1486 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1487 "tgt %p, sess_count=%d\n",
1488 tgt, tgt->sess_count);
2d70c103 1489 res = (tgt->sess_count == 0);
726b8548 1490 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1491
1492 return res;
1493}
1494
1495/* Called by tcm_qla2xxx configfs code */
3c231bda 1496int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1497{
1498 struct scsi_qla_host *vha = tgt->vha;
1499 struct qla_hw_data *ha = tgt->ha;
1500 unsigned long flags;
1501
b6faaaf7 1502 mutex_lock(&ha->optrom_mutex);
3c231bda 1503 mutex_lock(&qla_tgt_mutex);
b6faaaf7 1504
2d70c103
NB		 1505 if (tgt->tgt_stop || tgt->tgt_stopped) {
1506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1507 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda 1508 mutex_unlock(&qla_tgt_mutex);
b6faaaf7 1509 mutex_unlock(&ha->optrom_mutex);
3c231bda 1510 return -EPERM;
2d70c103
NB		 1511 }
1512
3a33dc95 1513 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1514 vha->host_no, vha);
1515 /*
1516 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1517 * Lock is needed, because we still can get an incoming packet.
1518 */
0e8cd71c 1519 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1520 tgt->tgt_stop = 1;
c5701042 1521 qlt_clear_tgt_db(tgt);
0e8cd71c 1522 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1523 mutex_unlock(&qla_tgt_mutex);
2d70c103 1524
2d70c103
NB		 1525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1526 "Waiting for sess works (tgt %p)", tgt);
1527 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1528 while (!list_empty(&tgt->sess_works_list)) {
1529 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1530 flush_scheduled_work();
1531 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1532 }
1533 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1534
1535 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1536 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1537
b85e0957 1538 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1539
1540 /* Big hammer */
ead03855
QT		 1541 if (!ha->flags.host_shutting_down &&
1542 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1543 qlt_disable_vha(vha);
1544
1545 /* Wait for sessions to clear out (just in case) */
b85e0957 1546 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
b6faaaf7
QT		 1547 mutex_unlock(&ha->optrom_mutex);
1548
3c231bda 1549 return 0;
2d70c103
NB		 1550}
1551EXPORT_SYMBOL(qlt_stop_phase1);
1552
1553/* Called by tcm_qla2xxx configfs code */
1554void qlt_stop_phase2(struct qla_tgt *tgt)
1555{
3a33dc95 1556 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1557
1558 if (tgt->tgt_stopped) {
0e8cd71c 1559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1560 "Already in tgt->tgt_stopped state\n");
1561 dump_stack();
1562 return;
1563 }
3a33dc95
QT		 1564 if (!tgt->tgt_stop) {
1565 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1566 "%s: phase1 stop is not completed\n", __func__);
1567 dump_stack();
1568 return;
1569 }
2d70c103 1570
0e8cd71c 1571 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1572 tgt->tgt_stop = 0;
1573 tgt->tgt_stopped = 1;
0e8cd71c 1574 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1575
3a33dc95 1576 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103 1577 tgt);
0645cb83
QT		 1578
1579 switch (vha->qlini_mode) {
1580 case QLA2XXX_INI_MODE_EXCLUSIVE:
1581 vha->flags.online = 1;
1582 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1583 break;
1584 default:
1585 break;
1586 }
2d70c103
NB		 1587}
1588EXPORT_SYMBOL(qlt_stop_phase2);
1589
1590/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1591static void qlt_release(struct qla_tgt *tgt)
2d70c103 1592{
0e8cd71c 1593 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1594 void *node;
1595 u64 key = 0;
1596 u16 i;
1597 struct qla_qpair_hint *h;
bdbe24de 1598 struct qla_hw_data *ha = vha->hw;
2d70c103 1599
3a33dc95
QT		 1600 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop &&
1601 !tgt->tgt_stopped)
1602 qlt_stop_phase1(tgt);
1603
0e8cd71c 1604 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
2d70c103
NB		 1605 qlt_stop_phase2(tgt);
1606
e326d22a
QT		 1607 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1608 unsigned long flags;
1609
1610 h = &tgt->qphints[i];
1611 if (h->qpair) {
1612 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1613 list_del(&h->hint_elem);
1614 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1615 h->qpair = NULL;
1616 }
1617 }
1618 kfree(tgt->qphints);
bdbe24de
QT		 1619 mutex_lock(&qla_tgt_mutex);
1620 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1621 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1622
1623 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1624 btree_remove64(&tgt->lun_qpair_map, key);
1625
1626 btree_destroy64(&tgt->lun_qpair_map);
1627
3be63b1e
SC		 1628 if (vha->vp_idx)
1629 if (ha->tgt.tgt_ops &&
1630 ha->tgt.tgt_ops->remove_target &&
1631 vha->vha_tgt.target_lport_ptr)
1632 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1633
0e8cd71c 1634 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1635
0e8cd71c 1636 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1637 "Release of tgt %p finished\n", tgt);
1638
1639 kfree(tgt);
1640}
1641
1642/* ha->hardware_lock supposed to be held on entry */
1643static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1644 const void *param, unsigned int param_size)
1645{
1646 struct qla_tgt_sess_work_param *prm;
1647 unsigned long flags;
1648
1649 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1650 if (!prm) {
1651 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1652 "qla_target(%d): Unable to create session "
1653 "work, command will be refused", 0);
1654 return -ENOMEM;
1655 }
1656
1657 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1658 "Scheduling work (type %d, prm %p)"
1659 " to find session for param %p (size %d, tgt %p)\n",
1660 type, prm, param, param_size, tgt);
1661
1662 prm->type = type;
1663 memcpy(&prm->tm_iocb, param, param_size);
1664
1665 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1666 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1667 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1668
1669 schedule_work(&tgt->sess_work);
1670
1671 return 0;
1672}
1673
1674/*
1675 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1676 */
82de802a 1677static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1678 struct imm_ntfy_from_isp *ntfy,
1679 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1680 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1681{
82de802a 1682 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1683 struct qla_hw_data *ha = vha->hw;
1684 request_t *pkt;
1685 struct nack_to_isp *nack;
1686
ec7193e2
QT		 1687 if (!ha->flags.fw_started)
1688 return;
1689
2d70c103
NB		 1690 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1691
82de802a 1692 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1693 if (!pkt) {
1694 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1695 "qla_target(%d): %s failed: unable to allocate "
1696 "request packet\n", vha->vp_idx, __func__);
1697 return;
1698 }
1699
0e8cd71c
SK		 1700 if (vha->vha_tgt.qla_tgt != NULL)
1701 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1702
1703 pkt->entry_type = NOTIFY_ACK_TYPE;
1704 pkt->entry_count = 1;
1705
1706 nack = (struct nack_to_isp *)pkt;
1707 nack->ox_id = ntfy->ox_id;
1708
726b8548 1709 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1710 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1711 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1712 nack->u.isp24.flags = ntfy->u.isp24.flags &
ad950360 1713 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1714 }
1715 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1716 nack->u.isp24.status = ntfy->u.isp24.status;
1717 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1718 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1719 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1720 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1721 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1722 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1723 nack->u.isp24.srr_reject_code = srr_reject_code;
1724 nack->u.isp24.srr_reject_code_expl = srr_explan;
1725 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1726
1727 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1728 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1729 vha->vp_idx, nack->u.isp24.status);
1730
63163e06
HM		 1731 /* Memory Barrier */
1732 wmb();
82de802a 1733 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1734}
1735
6b0431d6
QT		 1736static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1737{
1738 struct scsi_qla_host *vha = mcmd->vha;
1739 struct qla_hw_data *ha = vha->hw;
1740 struct abts_resp_to_24xx *resp;
1741 uint32_t f_ctl, h;
1742 uint8_t *p;
1743 int rc;
1744 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1745 struct qla_qpair *qpair = mcmd->qpair;
1746
1747 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1748 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1749 ha, mcmd->fc_tm_rsp);
1750
1751 rc = qlt_check_reserve_free_req(qpair, 1);
1752 if (rc) {
1753 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1754 "qla_target(%d): %s failed: unable to allocate request packet\n",
1755 vha->vp_idx, __func__);
1756 return -EAGAIN;
1757 }
1758
1759 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1760 memset(resp, 0, sizeof(*resp));
1761
1762 h = qlt_make_handle(qpair);
1763 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1764 /*
1765 * CTIO type 7 from the firmware doesn't provide a way to
1766 * know the initiator's LOOP ID, hence we can't find
1767 * the session and, so, the command.
1768 */
1769 return -EAGAIN;
1770 } else {
1771 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1772 }
1773
1774 resp->handle = MAKE_HANDLE(qpair->req->id, h);
1775 resp->entry_type = ABTS_RESP_24XX;
1776 resp->entry_count = 1;
1777 resp->nport_handle = abts->nport_handle;
1778 resp->vp_index = vha->vp_idx;
1779 resp->sof_type = abts->sof_type;
1780 resp->exchange_address = abts->exchange_address;
1781 resp->fcp_hdr_le = abts->fcp_hdr_le;
1782 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1783 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1784 F_CTL_SEQ_INITIATIVE);
1785 p = (uint8_t *)&f_ctl;
1786 resp->fcp_hdr_le.f_ctl[0] = *p++;
1787 resp->fcp_hdr_le.f_ctl[1] = *p++;
1788 resp->fcp_hdr_le.f_ctl[2] = *p;
1789
1790 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1791 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1792 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1793 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1794 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1795 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1796
1797 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1798 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1799 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1800 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1801 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1802 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1803 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1804 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1805 } else {
1806 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1807 resp->payload.ba_rjt.reason_code =
1808 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1809 /* Other bytes are zero */
1810 }
1811
1812 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1813
1814 /* Memory Barrier */
1815 wmb();
1816 if (qpair->reqq_start_iocbs)
1817 qpair->reqq_start_iocbs(qpair);
1818 else
1819 qla2x00_start_iocbs(vha, qpair->req);
1820
1821 return rc;
1822}
1823
2d70c103
NB		 1824/*
1825 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1826 */
82de802a 1827static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1828 struct abts_recv_from_24xx *abts, uint32_t status,
1829 bool ids_reversed)
1830{
82de802a 1831 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1832 struct qla_hw_data *ha = vha->hw;
1833 struct abts_resp_to_24xx *resp;
1834 uint32_t f_ctl;
1835 uint8_t *p;
1836
1837 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1838 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1839 ha, abts, status);
1840
82de802a
QT		 1841 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1842 NULL);
2d70c103
NB		 1843 if (!resp) {
1844 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1845 "qla_target(%d): %s failed: unable to allocate "
1846 "request packet", vha->vp_idx, __func__);
1847 return;
1848 }
1849
1850 resp->entry_type = ABTS_RESP_24XX;
6b0431d6 1851 resp->handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1852 resp->entry_count = 1;
1853 resp->nport_handle = abts->nport_handle;
1854 resp->vp_index = vha->vp_idx;
1855 resp->sof_type = abts->sof_type;
1856 resp->exchange_address = abts->exchange_address;
1857 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1858 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1859 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1860 F_CTL_SEQ_INITIATIVE);
1861 p = (uint8_t *)&f_ctl;
1862 resp->fcp_hdr_le.f_ctl[0] = *p++;
1863 resp->fcp_hdr_le.f_ctl[1] = *p++;
1864 resp->fcp_hdr_le.f_ctl[2] = *p;
1865 if (ids_reversed) {
1866 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0];
1867 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
1868 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
1869 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
1870 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
1871 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
1872 } else {
1873 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
1874 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
1875 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
1876 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
1877 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
1878 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
1879 }
1880 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1881 if (status == FCP_TMF_CMPL) {
1882 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1883 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1884 resp->payload.ba_acct.low_seq_cnt = 0x0000;
1885 resp->payload.ba_acct.high_seq_cnt = 0xFFFF;
1886 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1887 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1888 } else {
1889 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1890 resp->payload.ba_rjt.reason_code =
1891 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1892 /* Other bytes are zero */
1893 }
1894
0e8cd71c 1895 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1896
63163e06
HM		 1897 /* Memory Barrier */
1898 wmb();
8abfa9e2
QT		 1899 if (qpair->reqq_start_iocbs)
1900 qpair->reqq_start_iocbs(qpair);
1901 else
1902 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1903}
1904
1905/*
1906 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1907 */
1908static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
6b0431d6 1909 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
2d70c103
NB		 1910{
1911 struct ctio7_to_24xx *ctio;
0691094f 1912 u16 tmp;
6b0431d6 1913 struct abts_recv_from_24xx *entry;
2d70c103 1914
0691094f 1915 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 1916 if (ctio == NULL) {
1917 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1918 "qla_target(%d): %s failed: unable to allocate "
1919 "request packet\n", vha->vp_idx, __func__);
1920 return;
1921 }
1922
6b0431d6
QT		 1923 if (mcmd)
1924 /* abts from remote port */
1925 entry = &mcmd->orig_iocb.abts;
1926 else
1927 /* abts from this driver. */
1928 entry = (struct abts_recv_from_24xx *)pkt;
1929
2d70c103
NB		 1930 /*
1931 * We've got on entrance firmware's response on by us generated
1932 * ABTS response. So, in it ID fields are reversed.
1933 */
1934
1935 ctio->entry_type = CTIO_TYPE7;
1936 ctio->entry_count = 1;
1937 ctio->nport_handle = entry->nport_handle;
1938 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1939 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103 1940 ctio->vp_index = vha->vp_idx;
2d70c103 1941 ctio->exchange_addr = entry->exchange_addr_to_abort;
0691094f 1942 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
6b0431d6
QT		 1943
1944 if (mcmd) {
1945 ctio->initiator_id[0] = entry->fcp_hdr_le.s_id[0];
1946 ctio->initiator_id[1] = entry->fcp_hdr_le.s_id[1];
1947 ctio->initiator_id[2] = entry->fcp_hdr_le.s_id[2];
1948
1949 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1950 tmp |= (mcmd->abort_io_attr << 9);
1951 else if (qpair->retry_term_cnt & 1)
1952 tmp |= (0x4 << 9);
1953 } else {
1954 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
1955 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
1956 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
1957
1958 if (qpair->retry_term_cnt & 1)
1959 tmp |= (0x4 << 9);
1960 }
0691094f 1961 ctio->u.status1.flags = cpu_to_le16(tmp);
6b0431d6 1962 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
0691094f 1963
6b0431d6
QT		 1964 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1965 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1966 le16_to_cpu(ctio->u.status1.flags),
1967 le16_to_cpu(ctio->u.status1.ox_id),
1968 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
2d70c103 1969
63163e06
HM		 1970 /* Memory Barrier */
1971 wmb();
0691094f
QT		 1972 if (qpair->reqq_start_iocbs)
1973 qpair->reqq_start_iocbs(qpair);
1974 else
1975 qla2x00_start_iocbs(vha, qpair->req);
2d70c103 1976
6b0431d6
QT		 1977 if (mcmd)
1978 qlt_build_abts_resp_iocb(mcmd);
1979 else
1980 qlt_24xx_send_abts_resp(qpair,
1981 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
8b2f5ff3 1982
8b2f5ff3
SN		 1983}
1984
1985/* drop cmds for the given lun
1986 * XXX only looks for cmds on the port through which lun reset was recieved
1987 * XXX does not go through the list of other port (which may have cmds
1988 * for the same lun)
1989 */
1990static void abort_cmds_for_lun(struct scsi_qla_host *vha,
f775bd14 1991 u64 lun, uint8_t *s_id)
8b2f5ff3
SN		 1992{
1993 struct qla_tgt_sess_op *op;
1994 struct qla_tgt_cmd *cmd;
1995 uint32_t key;
8b631d87 1996 unsigned long flags;
8b2f5ff3
SN		 1997
1998 key = sid_to_key(s_id);
8b631d87 1999 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 2000 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
2001 uint32_t op_key;
f775bd14 2002 u64 op_lun;
8b2f5ff3
SN		 2003
2004 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
2005 op_lun = scsilun_to_int(
2006 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
2007 if (op_key == key && op_lun == lun)
2008 op->aborted = true;
2009 }
41dc529a
QT		 2010
2011 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
2012 uint32_t op_key;
2013 u64 op_lun;
2014
2015 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
2016 op_lun = scsilun_to_int(
2017 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
2018 if (op_key == key && op_lun == lun)
2019 op->aborted = true;
2020 }
2021
8b2f5ff3
SN		 2022 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
2023 uint32_t cmd_key;
f775bd14 2024 u64 cmd_lun;
8b2f5ff3
SN		 2025
2026 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
2027 cmd_lun = scsilun_to_int(
2028 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
2029 if (cmd_key == key && cmd_lun == lun)
193b50b9 2030 cmd->aborted = 1;
8b2f5ff3 2031 }
8b631d87 2032 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 2033}
2034
84905dfe
QT		 2035static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
2036 uint64_t unpacked_lun)
2037{
2038 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2039 struct qla_qpair_hint *h = NULL;
2040
2041 if (vha->flags.qpairs_available) {
2042 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2043 if (!h)
2044 h = &tgt->qphints[0];
2045 } else {
2046 h = &tgt->qphints[0];
2047 }
2048
2049 return h;
2050}
2051
2052static void qlt_do_tmr_work(struct work_struct *work)
2053{
2054 struct qla_tgt_mgmt_cmd *mcmd =
2055 container_of(work, struct qla_tgt_mgmt_cmd, work);
2056 struct qla_hw_data *ha = mcmd->vha->hw;
2057 int rc = EIO;
2058 uint32_t tag;
2059 unsigned long flags;
2060
2061 switch (mcmd->tmr_func) {
2062 case QLA_TGT_ABTS:
2063 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort;
2064 break;
2065 default:
2066 tag = 0;
2067 break;
2068 }
2069
2070 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2071 mcmd->tmr_func, tag);
2072
2073 if (rc != 0) {
2074 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2075 switch (mcmd->tmr_func) {
2076 case QLA_TGT_ABTS:
6b0431d6
QT		 2077 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2078 qlt_build_abts_resp_iocb(mcmd);
84905dfe
QT		 2079 break;
2080 case QLA_TGT_LUN_RESET:
2081 case QLA_TGT_CLEAR_TS:
2082 case QLA_TGT_ABORT_TS:
2083 case QLA_TGT_CLEAR_ACA:
2084 case QLA_TGT_TARGET_RESET:
2085 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2086 qla_sam_status);
2087 break;
2088
2089 case QLA_TGT_ABORT_ALL:
2090 case QLA_TGT_NEXUS_LOSS_SESS:
2091 case QLA_TGT_NEXUS_LOSS:
2092 qlt_send_notify_ack(mcmd->qpair,
2093 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2094 break;
2095 }
2096 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2097
2098 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2099 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2100 mcmd->vha->vp_idx, rc);
2101 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2102 }
2103}
2104
2d70c103
NB		 2105/* ha->hardware_lock supposed to be held on entry */
2106static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 2107 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 2108{
2109 struct qla_hw_data *ha = vha->hw;
2110 struct qla_tgt_mgmt_cmd *mcmd;
84905dfe 2111 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
06e97b48 2112
2d70c103
NB		 2113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2114 "qla_target(%d): task abort (tag=%d)\n",
2115 vha->vp_idx, abts->exchange_addr_to_abort);
2116
2117 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2118 if (mcmd == NULL) {
2119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2120 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2121 vha->vp_idx, __func__);
2122 return -ENOMEM;
2123 }
2124 memset(mcmd, 0, sizeof(*mcmd));
6b0431d6 2125 mcmd->cmd_type = TYPE_TGT_TMCMD;
2d70c103
NB		 2126 mcmd->sess = sess;
2127 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 2128 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 2129 mcmd->tmr_func = QLA_TGT_ABTS;
84905dfe 2130 mcmd->qpair = h->qpair;
72fcd4eb 2131 mcmd->vha = vha;
2d70c103 2132
eb5ae233
NB		 2133 /*
2134 * LUN is looked up by target-core internally based on the passed
2135 * abts->exchange_addr_to_abort tag.
2136 */
84905dfe
QT		 2137 mcmd->se_cmd.cpuid = h->cpuid;
2138
2139 if (ha->tgt.tgt_ops->find_cmd_by_tag) {
2140 struct qla_tgt_cmd *abort_cmd;
2141
2142 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
2143 abts->exchange_addr_to_abort);
2144 if (abort_cmd && abort_cmd->qpair) {
2145 mcmd->qpair = abort_cmd->qpair;
2146 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
6b0431d6
QT		 2147 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2148 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
84905dfe 2149 }
2d70c103
NB		 2150 }
2151
84905dfe
QT		 2152 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2153 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2154
2d70c103
NB		 2155 return 0;
2156}
2157
2158/*
2159 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2160 */
2161static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2162 struct abts_recv_from_24xx *abts)
2163{
2164 struct qla_hw_data *ha = vha->hw;
5d964837 2165 struct fc_port *sess;
2d70c103
NB		 2166 uint32_t tag = abts->exchange_addr_to_abort;
2167 uint8_t s_id[3];
2168 int rc;
7560151b 2169 unsigned long flags;
2d70c103
NB		 2170
2171 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2173 "qla_target(%d): ABTS: Abort Sequence not "
2174 "supported\n", vha->vp_idx);
82de802a
QT		 2175 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2176 false);
2d70c103
NB		 2177 return;
2178 }
2179
2180 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2181 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2182 "qla_target(%d): ABTS: Unknown Exchange "
2183 "Address received\n", vha->vp_idx);
82de802a
QT		 2184 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2185 false);
2d70c103
NB		 2186 return;
2187 }
2188
2189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2190 "qla_target(%d): task abort (s_id=%x:%x:%x, "
2191 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
2192 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
2193 le32_to_cpu(abts->fcp_hdr_le.parameter));
2194
2195 s_id[0] = abts->fcp_hdr_le.s_id[2];
2196 s_id[1] = abts->fcp_hdr_le.s_id[1];
2197 s_id[2] = abts->fcp_hdr_le.s_id[0];
2198
7560151b 2199 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 2200 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2201 if (!sess) {
2202 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
03fea736 2203 "qla_target(%d): task abort for non-existent session\n",
2d70c103 2204 vha->vp_idx);
7560151b
QT		 2205 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2206
fb35265b
QT		 2207 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2208 false);
2d70c103
NB		 2209 return;
2210 }
7560151b
QT		 2211 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2212
2d70c103 2213
726b8548 2214 if (sess->deleted) {
82de802a
QT		 2215 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2216 false);
e52a8b45
AP		 2217 return;
2218 }
2219
2d70c103
NB		 2220 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2221 if (rc != 0) {
2222 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2223 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2224 vha->vp_idx, rc);
82de802a
QT		 2225 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2226 false);
2d70c103
NB		 2227 return;
2228 }
2229}
2230
2231/*
2232 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2233 */
82de802a 2234static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2235 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2236{
72fcd4eb 2237 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2238 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2239 struct ctio7_to_24xx *ctio;
33a5fcee 2240 uint16_t temp;
2d70c103
NB		 2241
2242 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2243 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2244 ha, atio, resp_code);
2245
2d70c103 2246
82de802a 2247 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2248 if (ctio == NULL) {
2249 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2250 "qla_target(%d): %s failed: unable to allocate "
2251 "request packet\n", ha->vp_idx, __func__);
2252 return;
2253 }
2254
2255 ctio->entry_type = CTIO_TYPE7;
2256 ctio->entry_count = 1;
2257 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
2258 ctio->nport_handle = mcmd->sess->loop_id;
ad950360 2259 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2260 ctio->vp_index = ha->vp_idx;
2261 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2262 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2263 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2264 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2265 temp = (atio->u.isp24.attr << 9)|
2266 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2267 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2268 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2269 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2270 ctio->u.status1.scsi_status =
ad950360
BVA		 2271 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2272 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2273 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2274
63163e06
HM		 2275 /* Memory Barrier */
2276 wmb();
8abfa9e2
QT		 2277 if (qpair->reqq_start_iocbs)
2278 qpair->reqq_start_iocbs(qpair);
2279 else
2280 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2281}
2282
2283void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2284{
2285 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2286}
2287EXPORT_SYMBOL(qlt_free_mcmd);
2288
be25152c
QT		 2289/*
2290 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2291 * reacquire
2292 */
8abfa9e2 2293void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2294 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2295{
2296 struct atio_from_isp *atio = &cmd->atio;
2297 struct ctio7_to_24xx *ctio;
2298 uint16_t temp;
8abfa9e2 2299 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2300
2301 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2302 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2303 "sense_key=%02x, asc=%02x, ascq=%02x",
2304 vha, atio, scsi_status, sense_key, asc, ascq);
2305
2306 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2307 if (!ctio) {
2308 ql_dbg(ql_dbg_async, vha, 0x3067,
2309 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2310 vha->host_no, __func__);
2311 goto out;
2312 }
2313
2314 ctio->entry_type = CTIO_TYPE7;
2315 ctio->entry_count = 1;
2316 ctio->handle = QLA_TGT_SKIP_HANDLE;
2317 ctio->nport_handle = cmd->sess->loop_id;
2318 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2319 ctio->vp_index = vha->vp_idx;
2320 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2321 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2322 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2323 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2324 temp = (atio->u.isp24.attr << 9) |
2325 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2326 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2327 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2328 ctio->u.status1.ox_id = cpu_to_le16(temp);
2329 ctio->u.status1.scsi_status =
2330 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2331 ctio->u.status1.response_len = cpu_to_le16(18);
2332 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2333
2334 if (ctio->u.status1.residual != 0)
2335 ctio->u.status1.scsi_status |=
2336 cpu_to_le16(SS_RESIDUAL_UNDER);
2337
2338 /* Response code and sense key */
2339 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
2340 (&ctio->u.status1.sense_data)[0]);
2341 /* Additional sense length */
2342 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
2343 /* ASC and ASCQ */
2344 put_unaligned_le32(((asc << 24) | (ascq << 16)),
2345 (&ctio->u.status1.sense_data)[3]);
2346
2347 /* Memory Barrier */
2348 wmb();
2349
8abfa9e2
QT		 2350 if (qpair->reqq_start_iocbs)
2351 qpair->reqq_start_iocbs(qpair);
2352 else
2353 qla2x00_start_iocbs(vha, qpair->req);
2354
be25152c
QT		 2355out:
2356 return;
2357}
2358
2d70c103
NB		 2359/* callback from target fabric module code */
2360void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2361{
2362 struct scsi_qla_host *vha = mcmd->sess->vha;
2363 struct qla_hw_data *ha = vha->hw;
2364 unsigned long flags;
82de802a 2365 struct qla_qpair *qpair = mcmd->qpair;
6b0431d6 2366 bool free_mcmd = true;
2d70c103
NB		 2367
2368 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2369 "TM response mcmd (%p) status %#x state %#x",
2370 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2371
82de802a 2372 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2373
7c3f8fd1 2374 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2375 /*
3bb67df5 2376 * Either the port is not online or this request was from
b6a029e1
AE		 2377 * previous life, just abort the processing.
2378 */
2379 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2380 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2381 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2382 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2383 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2384 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2385 return;
2386 }
2387
726b8548 2388 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
8837aa8b
BVA		 2389 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
2390 case ELS_LOGO:
2391 case ELS_PRLO:
2392 case ELS_TPRLO:
83548fe2 2393 ql_dbg(ql_dbg_disc, vha, 0x2106,
19ce192c 2394 "TM response logo %8phC status %#x state %#x",
726b8548
QT		 2395 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2396 mcmd->flags);
d8630bb9 2397 qlt_schedule_sess_for_deletion(mcmd->sess);
8837aa8b
BVA		 2398 break;
2399 default:
82de802a
QT		 2400 qlt_send_notify_ack(vha->hw->base_qpair,
2401 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
8837aa8b 2402 break;
726b8548
QT		 2403 }
2404 } else {
6b0431d6
QT		 2405 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2406 qlt_build_abts_resp_iocb(mcmd);
2407 free_mcmd = false;
2408 } else
82de802a 2409 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2410 mcmd->fc_tm_rsp);
2411 }
2412 /*
2413 * Make the callback for ->free_mcmd() to queue_work() and invoke
2414 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2415 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2416 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2417 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2418 * qlt_xmit_tm_rsp() returns here..
2419 */
6b0431d6
QT		 2420 if (free_mcmd)
2421 ha->tgt.tgt_ops->free_mcmd(mcmd);
2422
82de802a 2423 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2424}
2425EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2426
2427/* No locks */
2428static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2429{
2430 struct qla_tgt_cmd *cmd = prm->cmd;
2431
2432 BUG_ON(cmd->sg_cnt == 0);
2433
2434 prm->sg = (struct scatterlist *)cmd->sg;
e7d0bb77 2435 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2d70c103
NB		 2436 cmd->sg_cnt, cmd->dma_data_direction);
2437 if (unlikely(prm->seg_cnt == 0))
2438 goto out_err;
2439
2440 prm->cmd->sg_mapped = 1;
2441
f83adb61
QT		 2442 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2443 /*
2444 * If greater than four sg entries then we need to allocate
2445 * the continuation entries
2446 */
b5399f7d 2447 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2448 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2449 QLA_TGT_DATASEGS_PER_CMD_24XX,
2450 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2451 } else {
2452 /* DIF */
2453 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2454 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2455 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2456 prm->tot_dsds = prm->seg_cnt;
2457 } else
2458 prm->tot_dsds = prm->seg_cnt;
2459
2460 if (cmd->prot_sg_cnt) {
2461 prm->prot_sg = cmd->prot_sg;
e7d0bb77 2462 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
f83adb61
QT		 2463 cmd->prot_sg, cmd->prot_sg_cnt,
2464 cmd->dma_data_direction);
2465 if (unlikely(prm->prot_seg_cnt == 0))
2466 goto out_err;
2467
2468 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2469 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2470 /* Dif Bundling not support here */
2471 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2472 cmd->blk_sz);
2473 prm->tot_dsds += prm->prot_seg_cnt;
2474 } else
2475 prm->tot_dsds += prm->prot_seg_cnt;
2476 }
2477 }
2d70c103 2478
2d70c103
NB		 2479 return 0;
2480
2481out_err:
22d84726 2482 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2483 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2484 0, prm->cmd->sg_cnt);
2485 return -1;
2486}
2487
f9b6721a 2488static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2489{
8abfa9e2
QT		 2490 struct qla_hw_data *ha;
2491 struct qla_qpair *qpair;
bd432bb5 2492
f9b6721a
JE		 2493 if (!cmd->sg_mapped)
2494 return;
2495
8abfa9e2
QT		 2496 qpair = cmd->qpair;
2497
e7d0bb77 2498 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
8abfa9e2 2499 cmd->dma_data_direction);
2d70c103 2500 cmd->sg_mapped = 0;
f83adb61
QT		 2501
2502 if (cmd->prot_sg_cnt)
e7d0bb77 2503 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2504 cmd->dma_data_direction);
2505
d5ff0eed
JC		 2506 if (!cmd->ctx)
2507 return;
8abfa9e2 2508 ha = vha->hw;
f83adb61 2509 if (cmd->ctx_dsd_alloced)
d5ff0eed 2510 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2511
d5ff0eed 2512 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2513}
2514
82de802a 2515static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2516 uint32_t req_cnt)
2517{
d63b328f 2518 uint32_t cnt;
82de802a 2519 struct req_que *req = qpair->req;
2d70c103 2520
82de802a 2521 if (req->cnt < (req_cnt + 2)) {
af7bb382
QT		 2522 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
2523 RD_REG_DWORD_RELAXED(req->req_q_out));
2d70c103 2524
82de802a
QT		 2525 if (req->ring_index < cnt)
2526 req->cnt = cnt - req->ring_index;
2d70c103 2527 else
82de802a 2528 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2529
82de802a 2530 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2531 return -EAGAIN;
2d70c103 2532 }
bc7095a9 2533
82de802a 2534 req->cnt -= req_cnt;
2d70c103
NB		 2535
2536 return 0;
2537}
2538
2539/*
2540 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2541 */
82de802a 2542static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2543{
2544 /* Adjust ring index. */
82de802a
QT		 2545 req->ring_index++;
2546 if (req->ring_index == req->length) {
2547 req->ring_index = 0;
2548 req->ring_ptr = req->ring;
2d70c103 2549 } else {
82de802a 2550 req->ring_ptr++;
2d70c103 2551 }
82de802a 2552 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2553}
2554
2555/* ha->hardware_lock supposed to be held on entry */
82de802a 2556static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2557{
2d70c103 2558 uint32_t h;
c5419e26
QT		 2559 int index;
2560 uint8_t found = 0;
82de802a 2561 struct req_que *req = qpair->req;
c5419e26
QT		 2562
2563 h = req->current_outstanding_cmd;
2d70c103 2564
c5419e26
QT		 2565 for (index = 1; index < req->num_outstanding_cmds; index++) {
2566 h++;
2567 if (h == req->num_outstanding_cmds)
2568 h = 1;
2569
2570 if (h == QLA_TGT_SKIP_HANDLE)
2571 continue;
2572
2573 if (!req->outstanding_cmds[h]) {
2574 found = 1;
2d70c103
NB		 2575 break;
2576 }
c5419e26 2577 }
2d70c103 2578
c5419e26
QT		 2579 if (found) {
2580 req->current_outstanding_cmd = h;
2581 } else {
8abfa9e2
QT		 2582 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2583 "qla_target(%d): Ran out of empty cmd slots\n",
2584 qpair->vha->vp_idx);
c5419e26
QT		 2585 h = QLA_TGT_NULL_HANDLE;
2586 }
2d70c103
NB		 2587
2588 return h;
2589}
2590
2591/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2592static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2593 struct qla_tgt_prm *prm)
2d70c103
NB		 2594{
2595 uint32_t h;
2596 struct ctio7_to_24xx *pkt;
2d70c103 2597 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2598 uint16_t temp;
2d70c103 2599
82de802a 2600 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2601 prm->pkt = pkt;
2602 memset(pkt, 0, sizeof(*pkt));
2603
2604 pkt->entry_type = CTIO_TYPE7;
2605 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2606 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2607
82de802a 2608 h = qlt_make_handle(qpair);
2d70c103
NB		 2609 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2610 /*
2611 * CTIO type 7 from the firmware doesn't provide a way to
2612 * know the initiator's LOOP ID, hence we can't find
2613 * the session and, so, the command.
2614 */
2615 return -EAGAIN;
e326d22a
QT		 2616 } else
2617 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2618
82de802a
QT		 2619 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
2620 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2621 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2622 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 2623 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
2624 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
2625 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
2626 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2627 temp = atio->u.isp24.attr << 9;
2628 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2629 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2630 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2631 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2632
2d70c103
NB		 2633 return 0;
2634}
2635
2636/*
2637 * ha->hardware_lock supposed to be held on entry. We have already made sure
2638 * that there is sufficient amount of request entries to not drop it.
2639 */
32d29b4c 2640static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2641{
2642 int cnt;
15b7a68c 2643 struct dsd64 *cur_dsd;
2d70c103
NB		 2644
2645 /* Build continuation packets */
2646 while (prm->seg_cnt > 0) {
2647 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2648 (cont_a64_entry_t *)qlt_get_req_pkt(
2649 prm->cmd->qpair->req);
2d70c103
NB		 2650
2651 /*
2652 * Make sure that from cont_pkt64 none of
2653 * 64-bit specific fields used for 32-bit
2654 * addressing. Cast to (cont_entry_t *) for
2655 * that.
2656 */
2657
2658 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2659
2660 cont_pkt64->entry_count = 1;
2661 cont_pkt64->sys_define = 0;
2662
32d29b4c 2663 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
15b7a68c 2664 cur_dsd = cont_pkt64->dsd;
2d70c103
NB		 2665
2666 /* Load continuation entry data segments */
2667 for (cnt = 0;
b5399f7d 2668 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103 2669 cnt++, prm->seg_cnt--) {
15b7a68c 2670 append_dsd64(&cur_dsd, prm->sg);
2d70c103
NB		 2671 prm->sg = sg_next(prm->sg);
2672 }
2673 }
2674}
2675
2676/*
2677 * ha->hardware_lock supposed to be held on entry. We have already made sure
2678 * that there is sufficient amount of request entries to not drop it.
2679 */
32d29b4c 2680static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2681{
2682 int cnt;
15b7a68c 2683 struct dsd64 *cur_dsd;
2d70c103
NB		 2684 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2685
2d70c103
NB		 2686 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2687
2688 /* Setup packet address segment pointer */
15b7a68c 2689 cur_dsd = &pkt24->u.status0.dsd;
2d70c103
NB		 2690
2691 /* Set total data segment count */
2692 if (prm->seg_cnt)
2693 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2694
2695 if (prm->seg_cnt == 0) {
2696 /* No data transfer */
15b7a68c
BVA		 2697 cur_dsd->address = 0;
2698 cur_dsd->length = 0;
2d70c103
NB		 2699 return;
2700 }
2701
2702 /* If scatter gather */
2d70c103
NB		 2703
2704 /* Load command entry data segments */
2705 for (cnt = 0;
b5399f7d 2706 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103 2707 cnt++, prm->seg_cnt--) {
15b7a68c 2708 append_dsd64(&cur_dsd, prm->sg);
2d70c103
NB		 2709 prm->sg = sg_next(prm->sg);
2710 }
2711
32d29b4c 2712 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2713}
2714
2715static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2716{
2717 return cmd->bufflen > 0;
2718}
2719
be25152c
QT		 2720static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2721{
2722 struct qla_tgt_cmd *cmd;
2723 struct scsi_qla_host *vha;
2724
2725 /* asc 0x10=dif error */
2726 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2727 cmd = prm->cmd;
2728 vha = cmd->vha;
2729 /* ASCQ */
2730 switch (prm->sense_buffer[13]) {
2731 case 1:
83548fe2 2732 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2733 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2734 "se_cmd=%p tag[%x]",
2735 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2736 cmd->atio.u.isp24.exchange_addr);
2737 break;
2738 case 2:
83548fe2 2739 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2740 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2741 "se_cmd=%p tag[%x]",
2742 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2743 cmd->atio.u.isp24.exchange_addr);
2744 break;
2745 case 3:
83548fe2 2746 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2747 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2748 "se_cmd=%p tag[%x]",
2749 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2750 cmd->atio.u.isp24.exchange_addr);
2751 break;
2752 default:
83548fe2 2753 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2754 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2755 "se_cmd=%p tag[%x]",
2756 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2757 cmd->atio.u.isp24.exchange_addr);
2758 break;
2759 }
83548fe2 2760 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2761 }
2762}
2763
2d70c103
NB		 2764/*
2765 * Called without ha->hardware_lock held
2766 */
2767static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2768 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2769 uint32_t *full_req_cnt)
2770{
2d70c103 2771 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2772 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2773
2d70c103 2774 prm->cmd = cmd;
7c3f8fd1
QT		 2775 prm->tgt = cmd->tgt;
2776 prm->pkt = NULL;
2d70c103
NB		 2777 prm->rq_result = scsi_status;
2778 prm->sense_buffer = &cmd->sense_buffer[0];
2779 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2780 prm->sg = NULL;
2781 prm->seg_cnt = -1;
2782 prm->req_cnt = 1;
7c3f8fd1 2783 prm->residual = 0;
2d70c103 2784 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2785 prm->prot_sg = NULL;
2786 prm->prot_seg_cnt = 0;
2787 prm->tot_dsds = 0;
2d70c103 2788
2d70c103
NB		 2789 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2790 if (qlt_pci_map_calc_cnt(prm) != 0)
2791 return -EAGAIN;
2792 }
2793
2794 *full_req_cnt = prm->req_cnt;
2795
2796 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2797 prm->residual = se_cmd->residual_count;
22d84726 2798 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2799 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2800 prm->residual, se_cmd->tag,
2801 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2802 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2803 prm->rq_result |= SS_RESIDUAL_UNDER;
2804 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2805 prm->residual = se_cmd->residual_count;
22d84726 2806 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2807 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2808 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2809 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2810 prm->rq_result |= SS_RESIDUAL_OVER;
2811 }
2812
2813 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2814 /*
2815 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2816 * ignored in *xmit_response() below
2817 */
2818 if (qlt_has_data(cmd)) {
2819 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2820 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2821 (prm->rq_result != 0))) {
2822 prm->add_status_pkt = 1;
2823 (*full_req_cnt)++;
2824 }
2825 }
2826 }
2827
2d70c103
NB		 2828 return 0;
2829}
2830
7c3f8fd1
QT		 2831static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2832 int sending_sense)
2d70c103 2833{
7c3f8fd1 2834 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2835 return 0;
2836
2837 if (sending_sense)
2838 return cmd->conf_compl_supported;
2839 else
7c3f8fd1
QT		 2840 return cmd->qpair->enable_explicit_conf &&
2841 cmd->conf_compl_supported;
2d70c103
NB		 2842}
2843
2d70c103
NB		 2844static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2845 struct qla_tgt_prm *prm)
2846{
2847 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2848 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2849 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2850 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2851 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2852 CTIO7_FLAGS_EXPLICIT_CONFORM |
2853 CTIO7_FLAGS_CONFORM_REQ);
2854 }
2855 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2856 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2857 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2858 int i;
2859
7c3f8fd1 2860 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2861 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2862 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2863 "Skipping EXPLICIT_CONFORM and "
2864 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2865 "non GOOD status\n");
2866 goto skip_explict_conf;
2867 }
ad950360 2868 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2869 CTIO7_FLAGS_EXPLICIT_CONFORM |
2870 CTIO7_FLAGS_CONFORM_REQ);
2871 }
2872skip_explict_conf:
2873 ctio->u.status1.flags &=
ad950360 2874 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2875 ctio->u.status1.flags |=
ad950360 2876 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2877 ctio->u.status1.scsi_status |=
ad950360 2878 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2879 ctio->u.status1.sense_length =
2880 cpu_to_le16(prm->sense_buffer_len);
2881 for (i = 0; i < prm->sense_buffer_len/4; i++)
2882 ((uint32_t *)ctio->u.status1.sense_data)[i] =
2883 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
be25152c
QT		 2884
2885 qlt_print_dif_err(prm);
2886
2d70c103
NB		 2887 } else {
2888 ctio->u.status1.flags &=
ad950360 2889 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2890 ctio->u.status1.flags |=
ad950360 2891 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2892 ctio->u.status1.sense_length = 0;
2893 memset(ctio->u.status1.sense_data, 0,
2894 sizeof(ctio->u.status1.sense_data));
2895 }
2896
2897 /* Sense with len > 24, is it possible ??? */
2898}
2899
f83adb61
QT		 2900static inline int
2901qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2902{
f83adb61
QT		 2903 switch (se_cmd->prot_op) {
2904 case TARGET_PROT_DOUT_INSERT:
2905 case TARGET_PROT_DIN_STRIP:
2906 if (ql2xenablehba_err_chk >= 1)
2907 return 1;
2908 break;
2909 case TARGET_PROT_DOUT_PASS:
2910 case TARGET_PROT_DIN_PASS:
2911 if (ql2xenablehba_err_chk >= 2)
2912 return 1;
2913 break;
2914 case TARGET_PROT_DIN_INSERT:
2915 case TARGET_PROT_DOUT_STRIP:
2916 return 1;
2917 default:
2918 break;
2919 }
2920 return 0;
2921}
2922
be25152c
QT		 2923static inline int
2924qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2925{
2926 switch (se_cmd->prot_op) {
2927 case TARGET_PROT_DIN_INSERT:
2928 case TARGET_PROT_DOUT_INSERT:
2929 case TARGET_PROT_DIN_STRIP:
2930 case TARGET_PROT_DOUT_STRIP:
2931 case TARGET_PROT_DIN_PASS:
2932 case TARGET_PROT_DOUT_PASS:
2933 return 1;
2934 default:
2935 return 0;
2936 }
2937 return 0;
2938}
2939
f83adb61 2940/*
be25152c 2941 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2942 */
be25152c
QT		 2943static void
2944qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2945 uint16_t *pfw_prot_opts)
f83adb61 2946{
be25152c 2947 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2948 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2949 scsi_qla_host_t *vha = cmd->tgt->vha;
2950 struct qla_hw_data *ha = vha->hw;
2951 uint32_t t32 = 0;
f83adb61 2952
be25152c
QT		 2953 /*
2954 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2955 * have been immplemented by TCM, before AppTag is avail.
2956 * Look for modesense_handlers[]
2957 */
c7ee3bd4 2958 ctx->app_tag = 0;
f83adb61
QT		 2959 ctx->app_tag_mask[0] = 0x0;
2960 ctx->app_tag_mask[1] = 0x0;
2961
be25152c
QT		 2962 if (IS_PI_UNINIT_CAPABLE(ha)) {
2963 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2964 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2965 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2966 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2967 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2968 }
2969
2970 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2971
f83adb61
QT		 2972 switch (se_cmd->prot_type) {
2973 case TARGET_DIF_TYPE0_PROT:
2974 /*
be25152c
QT		 2975 * No check for ql2xenablehba_err_chk, as it
2976 * would be an I/O error if hba tag generation
2977 * is not done.
f83adb61
QT		 2978 */
2979 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2980 /* enable ALL bytes of the ref tag */
2981 ctx->ref_tag_mask[0] = 0xff;
2982 ctx->ref_tag_mask[1] = 0xff;
2983 ctx->ref_tag_mask[2] = 0xff;
2984 ctx->ref_tag_mask[3] = 0xff;
2985 break;
f83adb61 2986 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2987 /*
2988 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2989 * REF tag, and 16 bit app tag.
2990 */
2991 ctx->ref_tag = cpu_to_le32(lba);
2992 if (!qla_tgt_ref_mask_check(se_cmd) ||
2993 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2994 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2995 break;
2996 }
2997 /* enable ALL bytes of the ref tag */
2998 ctx->ref_tag_mask[0] = 0xff;
2999 ctx->ref_tag_mask[1] = 0xff;
3000 ctx->ref_tag_mask[2] = 0xff;
3001 ctx->ref_tag_mask[3] = 0xff;
3002 break;
f83adb61 3003 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 3004 /*
3005 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
3006 * tag has to match LBA in CDB + N
3007 */
3008 ctx->ref_tag = cpu_to_le32(lba);
3009 if (!qla_tgt_ref_mask_check(se_cmd) ||
3010 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
3011 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3012 break;
3013 }
3014 /* enable ALL bytes of the ref tag */
3015 ctx->ref_tag_mask[0] = 0xff;
3016 ctx->ref_tag_mask[1] = 0xff;
3017 ctx->ref_tag_mask[2] = 0xff;
3018 ctx->ref_tag_mask[3] = 0xff;
3019 break;
f83adb61 3020 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 3021 /* For TYPE 3 protection: 16 bit GUARD only */
3022 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
3023 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
3024 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
3025 break;
f83adb61
QT		 3026 }
3027}
3028
f83adb61 3029static inline int
82de802a 3030qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61 3031{
15b7a68c 3032 struct dsd64 *cur_dsd;
f83adb61
QT		 3033 uint32_t transfer_length = 0;
3034 uint32_t data_bytes;
3035 uint32_t dif_bytes;
3036 uint8_t bundling = 1;
f83adb61
QT		 3037 struct crc_context *crc_ctx_pkt = NULL;
3038 struct qla_hw_data *ha;
3039 struct ctio_crc2_to_fw *pkt;
3040 dma_addr_t crc_ctx_dma;
3041 uint16_t fw_prot_opts = 0;
3042 struct qla_tgt_cmd *cmd = prm->cmd;
3043 struct se_cmd *se_cmd = &cmd->se_cmd;
3044 uint32_t h;
3045 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 3046 struct qla_tc_param tc;
c7ee3bd4 3047 uint16_t t16;
82de802a 3048 scsi_qla_host_t *vha = cmd->vha;
f83adb61 3049
f83adb61
QT		 3050 ha = vha->hw;
3051
82de802a 3052 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 3053 prm->pkt = pkt;
3054 memset(pkt, 0, sizeof(*pkt));
3055
22d84726 3056 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 3057 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 3058 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 3059 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3060
3061 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3062 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3063 bundling = 0;
3064
3065 /* Compute dif len and adjust data len to incude protection */
3066 data_bytes = cmd->bufflen;
3067 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3068
3069 switch (se_cmd->prot_op) {
3070 case TARGET_PROT_DIN_INSERT:
3071 case TARGET_PROT_DOUT_STRIP:
3072 transfer_length = data_bytes;
be25152c
QT		 3073 if (cmd->prot_sg_cnt)
3074 data_bytes += dif_bytes;
f83adb61 3075 break;
f83adb61
QT		 3076 case TARGET_PROT_DIN_STRIP:
3077 case TARGET_PROT_DOUT_INSERT:
3078 case TARGET_PROT_DIN_PASS:
3079 case TARGET_PROT_DOUT_PASS:
3080 transfer_length = data_bytes + dif_bytes;
3081 break;
f83adb61
QT		 3082 default:
3083 BUG();
3084 break;
3085 }
3086
3087 if (!qlt_hba_err_chk_enabled(se_cmd))
3088 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3089 /* HBA error checking enabled */
3090 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3091 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3092 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3093 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3094 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3095 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3096 }
3097
3098 switch (se_cmd->prot_op) {
3099 case TARGET_PROT_DIN_INSERT:
3100 case TARGET_PROT_DOUT_INSERT:
3101 fw_prot_opts |= PO_MODE_DIF_INSERT;
3102 break;
3103 case TARGET_PROT_DIN_STRIP:
3104 case TARGET_PROT_DOUT_STRIP:
3105 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3106 break;
3107 case TARGET_PROT_DIN_PASS:
3108 case TARGET_PROT_DOUT_PASS:
3109 fw_prot_opts |= PO_MODE_DIF_PASS;
3110 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3111 break;
3112 default:/* Normal Request */
3113 fw_prot_opts |= PO_MODE_DIF_PASS;
3114 break;
3115 }
3116
f83adb61
QT		 3117 /* ---- PKT ---- */
3118 /* Update entry type to indicate Command Type CRC_2 IOCB */
3119 pkt->entry_type = CTIO_CRC2;
3120 pkt->entry_count = 1;
22d84726 3121 pkt->vp_index = cmd->vp_idx;
f83adb61 3122
82de802a 3123 h = qlt_make_handle(qpair);
f83adb61
QT		 3124 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3125 /*
3126 * CTIO type 7 from the firmware doesn't provide a way to
3127 * know the initiator's LOOP ID, hence we can't find
3128 * the session and, so, the command.
3129 */
3130 return -EAGAIN;
3131 } else
82de802a 3132 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 3133
82de802a
QT		 3134 pkt->handle = MAKE_HANDLE(qpair->req->id, h);
3135 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 3136 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 3137 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
f83adb61
QT		 3138 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3139 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3140 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3141 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 3142
3143 /* silence compile warning */
3144 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3145 pkt->ox_id = cpu_to_le16(t16);
3146
3147 t16 = (atio->u.isp24.attr << 9);
3148 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 3149 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3150
3151 /* Set transfer direction */
3152 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 3153 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 3154 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 3155 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 3156
f83adb61
QT		 3157 pkt->dseg_count = prm->tot_dsds;
3158 /* Fibre channel byte count */
3159 pkt->transfer_length = cpu_to_le32(transfer_length);
3160
f83adb61
QT		 3161 /* ----- CRC context -------- */
3162
3163 /* Allocate CRC context from global pool */
3164 crc_ctx_pkt = cmd->ctx =
501017f6 3165 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
f83adb61
QT		 3166
3167 if (!crc_ctx_pkt)
3168 goto crc_queuing_error;
3169
f83adb61
QT		 3170 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3171 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3172
3173 /* Set handle */
3174 crc_ctx_pkt->handle = pkt->handle;
3175
be25152c 3176 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61
QT		 3177
3178 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
3179 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
3180 pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
3181
f83adb61 3182 if (!bundling) {
15b7a68c 3183 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd;
f83adb61
QT		 3184 } else {
3185 /*
3186 * Configure Bundling if we need to fetch interlaving
3187 * protection PCI accesses
3188 */
3189 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3190 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3191 crc_ctx_pkt->u.bundling.dseg_count =
3192 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
15b7a68c 3193 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd;
f83adb61
QT		 3194 }
3195
3196 /* Finish the common fields of CRC pkt */
3197 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3198 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3199 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3200 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3201
be25152c
QT		 3202 memset((uint8_t *)&tc, 0 , sizeof(tc));
3203 tc.vha = vha;
3204 tc.blk_sz = cmd->blk_sz;
3205 tc.bufflen = cmd->bufflen;
3206 tc.sg = cmd->sg;
3207 tc.prot_sg = cmd->prot_sg;
3208 tc.ctx = crc_ctx_pkt;
3209 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3210
3211 /* Walks data segments */
ad950360 3212 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3213
3214 if (!bundling && prm->prot_seg_cnt) {
3215 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3216 prm->tot_dsds, &tc))
f83adb61
QT		 3217 goto crc_queuing_error;
3218 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3219 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3220 goto crc_queuing_error;
3221
3222 if (bundling && prm->prot_seg_cnt) {
3223 /* Walks dif segments */
c7ee3bd4 3224 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61 3225
15b7a68c 3226 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
f83adb61 3227 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
50b81275 3228 prm->prot_seg_cnt, cmd))
f83adb61
QT		 3229 goto crc_queuing_error;
3230 }
3231 return QLA_SUCCESS;
3232
3233crc_queuing_error:
3234 /* Cleanup will be performed by the caller */
82de802a 3235 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3236
3237 return QLA_FUNCTION_FAILED;
3238}
3239
2d70c103
NB		 3240/*
3241 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3242 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3243 */
3244int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3245 uint8_t scsi_status)
3246{
3247 struct scsi_qla_host *vha = cmd->vha;
82de802a 3248 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3249 struct ctio7_to_24xx *pkt;
3250 struct qla_tgt_prm prm;
3251 uint32_t full_req_cnt = 0;
3252 unsigned long flags = 0;
3253 int res;
3254
51fd6e63
QT		 3255 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3256 (cmd->sess && cmd->sess->deleted)) {
a6ca8878 3257 cmd->state = QLA_TGT_STATE_PROCESSED;
a6ca8878
AP		 3258 return 0;
3259 }
a6ca8878 3260
22d84726 3261 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3262 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3263 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3264 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3265 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3266
3267 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3268 &full_req_cnt);
3269 if (unlikely(res != 0)) {
2d70c103
NB		 3270 return res;
3271 }
3272
82de802a 3273 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3274
ce1025cd 3275 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3276 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3277 else
60a9eadb 3278 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3279
7c3f8fd1 3280 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3281 /*
3bb67df5 3282 * Either the port is not online or this request was from
b6a029e1
AE		 3283 * previous life, just abort the processing.
3284 */
3285 cmd->state = QLA_TGT_STATE_PROCESSED;
22d84726 3286 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3287 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3288 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3289 cmd->reset_count, qpair->chip_reset);
82de802a 3290 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 3291 return 0;
3292 }
3293
2d70c103 3294 /* Does F/W have an IOCBs for this request */
82de802a 3295 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3296 if (unlikely(res))
3297 goto out_unmap_unlock;
3298
f83adb61 3299 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3300 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3301 else
82de802a 3302 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3303 if (unlikely(res != 0)) {
82de802a 3304 qpair->req->cnt += full_req_cnt;
2d70c103 3305 goto out_unmap_unlock;
810e30bc 3306 }
2d70c103
NB		 3307
3308 pkt = (struct ctio7_to_24xx *)prm.pkt;
3309
3310 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3311 pkt->u.status0.flags |=
ad950360 3312 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3313 CTIO7_FLAGS_STATUS_MODE_0);
3314
f83adb61 3315 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3316 qlt_load_data_segments(&prm);
2d70c103
NB		 3317
3318 if (prm.add_status_pkt == 0) {
3319 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3320 pkt->u.status0.scsi_status =
3321 cpu_to_le16(prm.rq_result);
3322 pkt->u.status0.residual =
3323 cpu_to_le32(prm.residual);
ad950360 3324 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3325 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3326 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3327 pkt->u.status0.flags |=
ad950360 3328 cpu_to_le16(
2d70c103
NB		 3329 CTIO7_FLAGS_EXPLICIT_CONFORM |
3330 CTIO7_FLAGS_CONFORM_REQ);
3331 }
3332 }
3333
3334 } else {
3335 /*
3336 * We have already made sure that there is sufficient
3337 * amount of request entries to not drop HW lock in
3338 * req_pkt().
3339 */
3340 struct ctio7_to_24xx *ctio =
82de802a
QT		 3341 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3342 qpair->req);
2d70c103 3343
22d84726 3344 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3345 "Building additional status packet 0x%p.\n",
3346 ctio);
2d70c103 3347
f83adb61
QT		 3348 /*
3349 * T10Dif: ctio_crc2_to_fw overlay ontop of
3350 * ctio7_to_24xx
3351 */
2d70c103 3352 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3353 /* reset back to CTIO7 */
2d70c103 3354 ctio->entry_count = 1;
f83adb61 3355 ctio->entry_type = CTIO_TYPE7;
2d70c103 3356 ctio->dseg_count = 0;
ad950360 3357 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3358 CTIO7_FLAGS_DATA_IN);
3359
3360 /* Real finish is ctio_m1's finish */
3361 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3362 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3363 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3364
3365 /* qlt_24xx_init_ctio_to_isp will correct
3366 * all neccessary fields that's part of CTIO7.
3367 * There should be no residual of CTIO-CRC2 data.
3368 */
2d70c103
NB		 3369 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3370 &prm);
2d70c103
NB		 3371 }
3372 } else
3373 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3374
3375
3376 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3377 cmd->cmd_sent_to_fw = 1;
079a3a3b 3378 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
2d70c103 3379
63163e06
HM		 3380 /* Memory Barrier */
3381 wmb();
8abfa9e2
QT		 3382 if (qpair->reqq_start_iocbs)
3383 qpair->reqq_start_iocbs(qpair);
3384 else
3385 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3386 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3387
3388 return 0;
3389
3390out_unmap_unlock:
f9b6721a 3391 qlt_unmap_sg(vha, cmd);
82de802a 3392 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3393
3394 return res;
3395}
3396EXPORT_SYMBOL(qlt_xmit_response);
3397
3398int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3399{
3400 struct ctio7_to_24xx *pkt;
3401 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3402 struct qla_tgt *tgt = cmd->tgt;
3403 struct qla_tgt_prm prm;
82de802a 3404 unsigned long flags = 0;
2d70c103 3405 int res = 0;
82de802a 3406 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3407
3408 memset(&prm, 0, sizeof(prm));
3409 prm.cmd = cmd;
3410 prm.tgt = tgt;
3411 prm.sg = NULL;
3412 prm.req_cnt = 1;
3413
2d70c103
NB		 3414 /* Calculate number of entries and segments required */
3415 if (qlt_pci_map_calc_cnt(&prm) != 0)
3416 return -EAGAIN;
3417
7c3f8fd1 3418 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3419 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3420 /*
3bb67df5 3421 * Either the port is not online or this request was from
b6a029e1
AE		 3422 * previous life, just abort the processing.
3423 */
aefed3e5
BVA		 3424 cmd->aborted = 1;
3425 cmd->write_data_transferred = 0;
3426 cmd->state = QLA_TGT_STATE_DATA_IN;
3427 vha->hw->tgt.tgt_ops->handle_data(cmd);
22d84726 3428 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3429 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3430 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3431 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3432 return 0;
3433 }
3434
82de802a 3435 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3436 /* Does F/W have an IOCBs for this request */
82de802a 3437 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3438 if (res != 0)
3439 goto out_unlock_free_unmap;
f83adb61 3440 if (cmd->se_cmd.prot_op)
82de802a 3441 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3442 else
82de802a 3443 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3444
810e30bc 3445 if (unlikely(res != 0)) {
82de802a 3446 qpair->req->cnt += prm.req_cnt;
2d70c103 3447 goto out_unlock_free_unmap;
810e30bc
QT		 3448 }
3449
2d70c103 3450 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3451 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3452 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3453
3454 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3455 qlt_load_data_segments(&prm);
2d70c103
NB		 3456
3457 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3458 cmd->cmd_sent_to_fw = 1;
079a3a3b 3459 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
2d70c103 3460
63163e06
HM		 3461 /* Memory Barrier */
3462 wmb();
8abfa9e2
QT		 3463 if (qpair->reqq_start_iocbs)
3464 qpair->reqq_start_iocbs(qpair);
3465 else
3466 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3467 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3468
3469 return res;
3470
3471out_unlock_free_unmap:
f9b6721a 3472 qlt_unmap_sg(vha, cmd);
82de802a 3473 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3474
3475 return res;
3476}
3477EXPORT_SYMBOL(qlt_rdy_to_xfer);
3478
f83adb61
QT		 3479
3480/*
be25152c 3481 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3482 */
be25152c 3483static void
8abfa9e2 3484qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3485 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3486{
3487 uint8_t *ap = &sts->actual_dif[0];
3488 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3489 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3490 uint8_t scsi_status, sense_key, asc, ascq;
3491 unsigned long flags;
8abfa9e2 3492 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3493
be25152c 3494 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3495
be25152c
QT		 3496 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0));
3497 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
3498 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
f83adb61 3499
be25152c
QT		 3500 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0));
3501 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
3502 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
f83adb61 3503
be25152c
QT		 3504 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3505 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3506
be25152c 3507 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3508
be25152c
QT		 3509 /* check appl tag */
3510 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3511 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3512 "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]",
3513 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3514 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3515 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3516 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3517
3518 cmd->dif_err_code = DIF_ERR_APP;
3519 scsi_status = SAM_STAT_CHECK_CONDITION;
3520 sense_key = ABORTED_COMMAND;
3521 asc = 0x10;
3522 ascq = 0x2;
f83adb61
QT		 3523 }
3524
3525 /* check ref tag */
be25152c 3526 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3527 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3528 "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] ",
3529 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3530 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3531 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3532 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3533
3534 cmd->dif_err_code = DIF_ERR_REF;
3535 scsi_status = SAM_STAT_CHECK_CONDITION;
3536 sense_key = ABORTED_COMMAND;
3537 asc = 0x10;
3538 ascq = 0x3;
f83adb61
QT		 3539 goto out;
3540 }
3541
be25152c
QT		 3542 /* check guard */
3543 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3544 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3545 "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]",
3546 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3547 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3548 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3549 cmd->atio.u.isp24.fcp_hdr.ox_id);
3550
be25152c
QT		 3551 cmd->dif_err_code = DIF_ERR_GRD;
3552 scsi_status = SAM_STAT_CHECK_CONDITION;
3553 sense_key = ABORTED_COMMAND;
3554 asc = 0x10;
3555 ascq = 0x1;
f83adb61
QT		 3556 }
3557out:
be25152c
QT		 3558 switch (cmd->state) {
3559 case QLA_TGT_STATE_NEED_DATA:
3560 /* handle_data will load DIF error code */
3561 cmd->state = QLA_TGT_STATE_DATA_IN;
3562 vha->hw->tgt.tgt_ops->handle_data(cmd);
3563 break;
3564 default:
3565 spin_lock_irqsave(&cmd->cmd_lock, flags);
3566 if (cmd->aborted) {
3567 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3568 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3569 break;
3570 }
3571 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3572
8abfa9e2
QT		 3573 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3574 ascq);
be25152c
QT		 3575 /* assume scsi status gets out on the wire.
3576 * Will not wait for completion.
3577 */
3578 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3579 break;
3580 }
3581}
f83adb61 3582
a6ca8878
AP		 3583/* If hardware_lock held on entry, might drop it, then reaquire */
3584/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3585static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3586 struct imm_ntfy_from_isp *ntfy)
3587{
3588 struct nack_to_isp *nack;
3589 struct qla_hw_data *ha = vha->hw;
3590 request_t *pkt;
3591 int ret = 0;
3592
3593 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3594 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3595
ec7193e2 3596 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3597 if (pkt == NULL) {
3598 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3599 "qla_target(%d): %s failed: unable to allocate "
3600 "request packet\n", vha->vp_idx, __func__);
3601 return -ENOMEM;
3602 }
3603
3604 pkt->entry_type = NOTIFY_ACK_TYPE;
3605 pkt->entry_count = 1;
4f060736 3606 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3607
3608 nack = (struct nack_to_isp *)pkt;
3609 nack->ox_id = ntfy->ox_id;
3610
3611 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3612 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3613 nack->u.isp24.flags = ntfy->u.isp24.flags &
3614 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3615 }
3616
3617 /* terminate */
3618 nack->u.isp24.flags |=
3619 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3620
3621 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3622 nack->u.isp24.status = ntfy->u.isp24.status;
3623 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3624 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3625 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3626 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3627 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3628 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3629
3630 qla2x00_start_iocbs(vha, vha->req);
3631 return ret;
3632}
3633
3634static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3635 struct imm_ntfy_from_isp *imm, int ha_locked)
3636{
a6ca8878
AP		 3637 int rc;
3638
e65449aa 3639 WARN_ON_ONCE(!ha_locked);
a6ca8878 3640 rc = __qlt_send_term_imm_notif(vha, imm);
e65449aa 3641 pr_debug("rc = %d\n", rc);
a6ca8878
AP		 3642}
3643
83548fe2
QT		 3644/*
3645 * If hardware_lock held on entry, might drop it, then reaquire
3646 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3647 */
82de802a 3648static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3649 struct qla_tgt_cmd *cmd,
3650 struct atio_from_isp *atio)
3651{
82de802a 3652 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3653 struct ctio7_to_24xx *ctio24;
3654 struct qla_hw_data *ha = vha->hw;
3655 request_t *pkt;
3656 int ret = 0;
33a5fcee 3657 uint16_t temp;
2d70c103 3658
83548fe2 3659 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3660
72fcd4eb
QT		 3661 if (cmd)
3662 vha = cmd->vha;
3663
82de802a 3664 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3665 if (pkt == NULL) {
3666 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3667 "qla_target(%d): %s failed: unable to allocate "
3668 "request packet\n", vha->vp_idx, __func__);
3669 return -ENOMEM;
3670 }
3671
3672 if (cmd != NULL) {
3673 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3674 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3675 "qla_target(%d): Terminating cmd %p with "
3676 "incorrect state %d\n", vha->vp_idx, cmd,
3677 cmd->state);
3678 } else
3679 ret = 1;
3680 }
3681
60a9eadb 3682 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3683 pkt->entry_count = 1;
3684 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3685
3686 ctio24 = (struct ctio7_to_24xx *)pkt;
3687 ctio24->entry_type = CTIO_TYPE7;
71cdc079 3688 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
ad950360 3689 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 3690 ctio24->vp_index = vha->vp_idx;
3691 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
3692 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
3693 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
3694 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3695 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3696 CTIO7_FLAGS_TERMINATE;
3697 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3698 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3699 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 3700
63163e06
HM		 3701 /* Memory Barrier */
3702 wmb();
8abfa9e2
QT		 3703 if (qpair->reqq_start_iocbs)
3704 qpair->reqq_start_iocbs(qpair);
3705 else
3706 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3707 return ret;
3708}
3709
82de802a 3710static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3711 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3712 int ul_abort)
2d70c103 3713{
82de802a 3714 struct scsi_qla_host *vha;
6bc85dd5 3715 unsigned long flags = 0;
2d70c103
NB		 3716 int rc;
3717
82de802a
QT		 3718 /* why use different vha? NPIV */
3719 if (cmd)
3720 vha = cmd->vha;
3721 else
3722 vha = qpair->vha;
2d70c103
NB		 3723
3724 if (ha_locked) {
82de802a 3725 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3726 if (rc == -ENOMEM)
3727 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3728 goto done;
3729 }
82de802a
QT		 3730 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3731 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3732 if (rc == -ENOMEM)
3733 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3734
2d70c103 3735done:
a07100e0 3736 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3737 if (cmd->sg_mapped)
3738 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3739 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3740 }
6bc85dd5
HM		 3741
3742 if (!ha_locked)
82de802a 3743 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3744
7b898542 3745 return;
2d70c103
NB		 3746}
3747
33e79977
QT		 3748static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3749{
3750 struct list_head free_list;
3751 struct qla_tgt_cmd *cmd, *tcmd;
3752
3753 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3754 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3755
3756 cmd = tcmd = NULL;
3757 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3758 INIT_LIST_HEAD(&free_list);
3759 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3760
3761 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3762 list_del(&cmd->cmd_list);
3763 /* This cmd was never sent to TCM. There is no need
3764 * to schedule free or call free_cmd
3765 */
3766 qlt_free_cmd(cmd);
3767 vha->hw->tgt.num_qfull_cmds_alloc--;
3768 }
3769 }
3770 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3771}
3772
3773static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3774{
3775 uint32_t total_leaked;
3776
3777 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3778
3779 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3780 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3781
3782 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3783 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3784 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3785
3786 if (IS_P3P_TYPE(vha->hw))
3787 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3788 else
3789 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3790 qla2xxx_wake_dpc(vha);
3791 }
3792
3793}
3794
a07100e0 3795int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3796{
3797 struct qla_tgt *tgt = cmd->tgt;
3798 struct scsi_qla_host *vha = tgt->vha;
3799 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3800 unsigned long flags;
7359df25
AP		 3801
3802 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3803 "qla_target(%d): terminating exchange for aborted cmd=%p "
3804 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3805 se_cmd->tag);
3806
a07100e0
QT		 3807 spin_lock_irqsave(&cmd->cmd_lock, flags);
3808 if (cmd->aborted) {
3809 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3810 /*
3811 * It's normal to see 2 calls in this path:
3812 * 1) XFER Rdy completion + CMD_T_ABORT
3813 * 2) TCM TMR - drain_state_list
3814 */
83548fe2
QT		 3815 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3816 "multiple abort. %p transport_state %x, t_state %x, "
3817 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3818 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3819 return EIO;
3820 }
193b50b9 3821 cmd->aborted = 1;
1eb42f96 3822 cmd->trc_flags |= TRC_ABORT;
a07100e0 3823 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3824
82de802a 3825 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3826 return 0;
7359df25
AP		 3827}
3828EXPORT_SYMBOL(qlt_abort_cmd);
3829
2d70c103
NB		 3830void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3831{
5d964837 3832 struct fc_port *sess = cmd->sess;
51a07f84 3833
f83adb61
QT		 3834 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3835 "%s: se_cmd[%p] ox_id %04x\n",
3836 __func__, &cmd->se_cmd,
3837 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3838
e07f8f65
SK		 3839 BUG_ON(cmd->cmd_in_wq);
3840
a07100e0
QT		 3841 if (cmd->sg_mapped)
3842 qlt_unmap_sg(cmd->vha, cmd);
3843
33e79977
QT		 3844 if (!cmd->q_full)
3845 qlt_decr_num_pend_cmds(cmd->vha);
3846
f83adb61 3847 BUG_ON(cmd->sg_mapped);
e07f8f65 3848 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3849 if (unlikely(cmd->free_sg))
3850 kfree(cmd->sg);
51a07f84
NB		 3851
3852 if (!sess || !sess->se_sess) {
3853 WARN_ON(1);
3854 return;
3855 }
e07f8f65 3856 cmd->jiffies_at_free = get_jiffies_64();
83c2b54b 3857 target_free_tag(sess->se_sess, &cmd->se_cmd);
2d70c103
NB		 3858}
3859EXPORT_SYMBOL(qlt_free_cmd);
3860
2d70c103
NB		 3861/*
3862 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3863 */
82de802a 3864static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3865 struct qla_tgt_cmd *cmd, uint32_t status)
3866{
3867 int term = 0;
82de802a 3868 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3869
be25152c 3870 if (cmd->se_cmd.prot_op)
83548fe2 3871 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3872 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3873 "se_cmd=%p tag[%x] op %#x/%s",
3874 cmd->lba, cmd->lba,
3875 cmd->num_blks, &cmd->se_cmd,
3876 cmd->atio.u.isp24.exchange_addr,
3877 cmd->se_cmd.prot_op,
3878 prot_op_str(cmd->se_cmd.prot_op));
3879
2d70c103
NB		 3880 if (ctio != NULL) {
3881 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
bd432bb5 3882
2d70c103 3883 term = !(c->flags &
ad950360 3884 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3885 } else
3886 term = 1;
3887
3888 if (term)
3efc31f7 3889 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3890
3891 return term;
3892}
3893
2d70c103
NB		 3894
3895/* ha->hardware_lock supposed to be held on entry */
6b0431d6 3896static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3897 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103 3898{
6b0431d6 3899 void *cmd = NULL;
82de802a
QT		 3900 struct req_que *req;
3901 int qid = GET_QID(handle);
3902 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3903
82de802a
QT		 3904 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3905 return NULL;
2d70c103 3906
82de802a
QT		 3907 if (qid == rsp->req->id) {
3908 req = rsp->req;
3909 } else if (vha->hw->req_q_map[qid]) {
3910 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3911 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3912 vha->vp_idx, rsp->id, handle);
3913 req = vha->hw->req_q_map[qid];
3914 } else {
3915 return NULL;
3916 }
667024a3 3917
82de802a 3918 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3919
82de802a 3920 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3921 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3922 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3923 "qla_target(%d): Wrong handle %x received\n",
3924 vha->vp_idx, handle);
3925 return NULL;
3926 }
82de802a 3927
6b0431d6 3928 cmd = (void *) req->outstanding_cmds[h];
82de802a 3929 if (unlikely(cmd == NULL)) {
c5419e26 3930 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3931 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3932 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3933 return NULL;
3934 }
82de802a 3935 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3936 } else if (ctio != NULL) {
3937 /* We can't get loop ID from CTIO7 */
3938 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3939 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3940 "support NULL handles\n", vha->vp_idx);
3941 return NULL;
3942 }
3943
3944 return cmd;
3945}
3946
3947/*
3948 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3949 */
82de802a
QT		 3950static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3951 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3952{
3953 struct qla_hw_data *ha = vha->hw;
3954 struct se_cmd *se_cmd;
2d70c103 3955 struct qla_tgt_cmd *cmd;
82de802a 3956 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3957
2d70c103
NB		 3958 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3959 /* That could happen only in case of an error/reset/abort */
3960 if (status != CTIO_SUCCESS) {
3961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3962 "Intermediate CTIO received"
3963 " (status %x)\n", status);
3964 }
3965 return;
3966 }
3967
81bcf1c5 3968 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3969 if (cmd == NULL)
2d70c103 3970 return;
092e1dc3 3971
2d70c103 3972 se_cmd = &cmd->se_cmd;
d564a372 3973 cmd->cmd_sent_to_fw = 0;
2d70c103 3974
f9b6721a 3975 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3976
3977 if (unlikely(status != CTIO_SUCCESS)) {
3978 switch (status & 0xFFFF) {
079a3a3b
QT		 3979 case CTIO_INVALID_RX_ID:
3980 if (printk_ratelimit())
3981 dev_info(&vha->hw->pdev->dev,
3982 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
3983 vha->vp_idx, cmd->atio.u.isp24.attr,
3984 ((cmd->ctio_flags >> 9) & 0xf),
3985 cmd->ctio_flags);
3986
3987 break;
2d70c103
NB		 3988 case CTIO_LIP_RESET:
3989 case CTIO_TARGET_RESET:
3990 case CTIO_ABORTED:
7b898542 3991 /* driver request abort via Terminate exchange */
2d70c103 3992 case CTIO_TIMEOUT:
2d70c103
NB		 3993 /* They are OK */
3994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3995 "qla_target(%d): CTIO with "
3996 "status %#x received, state %x, se_cmd %p, "
3997 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3998 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3999 status, cmd->state, se_cmd);
4000 break;
4001
4002 case CTIO_PORT_LOGGED_OUT:
4003 case CTIO_PORT_UNAVAILABLE:
71cdc079 4004 {
dacb5822
HM		 4005 int logged_out =
4006 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
4007
2d70c103 4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 4009 "qla_target(%d): CTIO with %s status %x "
2d70c103 4010 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 4011 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 4012 status, cmd->state, se_cmd);
2d70c103 4013
71cdc079
AP		 4014 if (logged_out && cmd->sess) {
4015 /*
4016 * Session is already logged out, but we need
4017 * to notify initiator, who's not aware of this
4018 */
71cdc079 4019 cmd->sess->send_els_logo = 1;
83548fe2 4020 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 4021 "%s %d %8phC post del sess\n",
4022 __func__, __LINE__, cmd->sess->port_name);
4023
d8630bb9 4024 qlt_schedule_sess_for_deletion(cmd->sess);
71cdc079
AP		 4025 }
4026 break;
4027 }
f83adb61
QT		 4028 case CTIO_DIF_ERROR: {
4029 struct ctio_crc_from_fw *crc =
4030 (struct ctio_crc_from_fw *)ctio;
4031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 4032 "qla_target(%d): CTIO with DIF_ERROR status %x "
4033 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
4034 "expect_dif[0x%llx]\n",
f83adb61
QT		 4035 vha->vp_idx, status, cmd->state, se_cmd,
4036 *((u64 *)&crc->actual_dif[0]),
4037 *((u64 *)&crc->expected_dif[0]));
4038
8abfa9e2 4039 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 4040 return;
f83adb61 4041 }
2d70c103
NB		 4042 default:
4043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 4044 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 4045 vha->vp_idx, status, cmd->state, se_cmd);
4046 break;
4047 }
4048
7b898542 4049
193b50b9 4050 /* "cmd->aborted" means
7b898542
QT		 4051 * cmd is already aborted/terminated, we don't
4052 * need to terminate again. The exchange is already
4053 * cleaned up/freed at FW level. Just cleanup at driver
4054 * level.
4055 */
4056 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 4057 (!cmd->aborted)) {
1eb42f96 4058 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 4059 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 4060 return;
7b898542 4061 }
2d70c103
NB		 4062 }
4063
4064 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 4065 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 4066 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 4067 cmd->state = QLA_TGT_STATE_DATA_IN;
4068
52c82823 4069 if (status == CTIO_SUCCESS)
2d70c103
NB		 4070 cmd->write_data_transferred = 1;
4071
2d70c103
NB		 4072 ha->tgt.tgt_ops->handle_data(cmd);
4073 return;
193b50b9 4074 } else if (cmd->aborted) {
1eb42f96 4075 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 4076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 4077 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 4078 } else {
1eb42f96 4079 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 4080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4081 "qla_target(%d): A command in state (%d) should "
4082 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4083 }
4084
7b898542 4085 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 4086 !cmd->aborted) {
2d70c103
NB		 4087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4088 dump_stack();
4089 }
4090
4091 ha->tgt.tgt_ops->free_cmd(cmd);
4092}
4093
2d70c103
NB		 4094static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4095 uint8_t task_codes)
4096{
4097 int fcp_task_attr;
4098
4099 switch (task_codes) {
4100 case ATIO_SIMPLE_QUEUE:
68d81f40 4101 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 4102 break;
4103 case ATIO_HEAD_OF_QUEUE:
68d81f40 4104 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 4105 break;
4106 case ATIO_ORDERED_QUEUE:
68d81f40 4107 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4108 break;
4109 case ATIO_ACA_QUEUE:
68d81f40 4110 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 4111 break;
4112 case ATIO_UNTAGGED:
68d81f40 4113 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 4114 break;
4115 default:
4116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4117 "qla_target: unknown task code %x, use ORDERED instead\n",
4118 task_codes);
68d81f40 4119 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4120 break;
4121 }
4122
4123 return fcp_task_attr;
4124}
4125
5d964837 4126static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *,
2d70c103
NB		 4127 uint8_t *);
4128/*
4129 * Process context for I/O path into tcm_qla2xxx code
4130 */
51a07f84 4131static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 4132{
2d70c103
NB		 4133 scsi_qla_host_t *vha = cmd->vha;
4134 struct qla_hw_data *ha = vha->hw;
5d964837 4135 struct fc_port *sess = cmd->sess;
2d70c103
NB		 4136 struct atio_from_isp *atio = &cmd->atio;
4137 unsigned char *cdb;
4138 unsigned long flags;
4139 uint32_t data_length;
4140 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4141 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4142
e07f8f65 4143 cmd->cmd_in_wq = 0;
1eb42f96 4144 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4145
193b50b9 4146 if (cmd->aborted) {
8b2f5ff3
SN		 4147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4148 "cmd with tag %u is aborted\n",
4149 cmd->atio.u.isp24.exchange_addr);
4150 goto out_term;
4151 }
4152
a07100e0 4153 spin_lock_init(&cmd->cmd_lock);
2d70c103 4154 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
649ee054 4155 cmd->se_cmd.tag = atio->u.isp24.exchange_addr;
2d70c103
NB		 4156
4157 if (atio->u.isp24.fcp_cmnd.rddata &&
4158 atio->u.isp24.fcp_cmnd.wrdata) {
4159 bidi = 1;
4160 data_dir = DMA_TO_DEVICE;
4161 } else if (atio->u.isp24.fcp_cmnd.rddata)
4162 data_dir = DMA_FROM_DEVICE;
4163 else if (atio->u.isp24.fcp_cmnd.wrdata)
4164 data_dir = DMA_TO_DEVICE;
4165 else
4166 data_dir = DMA_NONE;
4167
4168 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4169 atio->u.isp24.fcp_cmnd.task_attr);
e25f7654 4170 data_length = get_datalen_for_atio(atio);
2d70c103 4171
51a07f84
NB		 4172 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4173 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4174 if (ret != 0)
4175 goto out_term;
4176 /*
67eb4a60 4177 * Drop extra session reference from qlt_handle_cmd_for_atio().
2d70c103 4178 */
7560151b 4179 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4180 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4181 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4182 return;
4183
4184out_term:
667024a3 4185 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4186 /*
fae9eaf8
RD		 4187 * cmd has not sent to target yet, so pass NULL as the second
4188 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4189 */
1eb42f96 4190 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4191 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4192 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4193
4194 qlt_decr_num_pend_cmds(vha);
83c2b54b 4195 target_free_tag(sess->se_sess, &cmd->se_cmd);
82de802a 4196 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b
QT		 4197
4198 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5d964837 4199 ha->tgt.tgt_ops->put_sess(sess);
7560151b 4200 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
51a07f84
NB		 4201}
4202
4203static void qlt_do_work(struct work_struct *work)
4204{
4205 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4206 scsi_qla_host_t *vha = cmd->vha;
4207 unsigned long flags;
4208
4209 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4210 list_del(&cmd->cmd_list);
4211 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4212
4213 __qlt_do_work(cmd);
4214}
4215
09620eeb
QT		 4216void qlt_clr_qp_table(struct scsi_qla_host *vha)
4217{
4218 unsigned long flags;
4219 struct qla_hw_data *ha = vha->hw;
4220 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4221 void *node;
4222 u64 key = 0;
4223
4224 ql_log(ql_log_info, vha, 0x706c,
4225 "User update Number of Active Qpairs %d\n",
4226 ha->tgt.num_act_qpairs);
4227
4228 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4229
4230 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4231 btree_remove64(&tgt->lun_qpair_map, key);
4232
4233 ha->base_qpair->lun_cnt = 0;
4234 for (key = 0; key < ha->max_qpairs; key++)
4235 if (ha->queue_pair_map[key])
4236 ha->queue_pair_map[key]->lun_cnt = 0;
4237
4238 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4239}
4240
e326d22a
QT		 4241static void qlt_assign_qpair(struct scsi_qla_host *vha,
4242 struct qla_tgt_cmd *cmd)
4243{
4244 struct qla_qpair *qpair, *qp;
4245 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4246 struct qla_qpair_hint *h;
4247
4248 if (vha->flags.qpairs_available) {
4249 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4250 if (unlikely(!h)) {
4251 /* spread lun to qpair ratio evently */
4252 int lcnt = 0, rc;
4253 struct scsi_qla_host *base_vha =
4254 pci_get_drvdata(vha->hw->pdev);
4255
4256 qpair = vha->hw->base_qpair;
4257 if (qpair->lun_cnt == 0) {
4258 qpair->lun_cnt++;
4259 h = qla_qpair_to_hint(tgt, qpair);
4260 BUG_ON(!h);
4261 rc = btree_insert64(&tgt->lun_qpair_map,
4262 cmd->unpacked_lun, h, GFP_ATOMIC);
4263 if (rc) {
4264 qpair->lun_cnt--;
4265 ql_log(ql_log_info, vha, 0xd037,
4266 "Unable to insert lun %llx into lun_qpair_map\n",
4267 cmd->unpacked_lun);
4268 }
4269 goto out;
4270 } else {
4271 lcnt = qpair->lun_cnt;
4272 }
4273
4274 h = NULL;
4275 list_for_each_entry(qp, &base_vha->qp_list,
4276 qp_list_elem) {
4277 if (qp->lun_cnt == 0) {
4278 qp->lun_cnt++;
4279 h = qla_qpair_to_hint(tgt, qp);
4280 BUG_ON(!h);
4281 rc = btree_insert64(&tgt->lun_qpair_map,
4282 cmd->unpacked_lun, h, GFP_ATOMIC);
4283 if (rc) {
4284 qp->lun_cnt--;
4285 ql_log(ql_log_info, vha, 0xd038,
4286 "Unable to insert lun %llx into lun_qpair_map\n",
4287 cmd->unpacked_lun);
4288 }
4289 qpair = qp;
4290 goto out;
4291 } else {
4292 if (qp->lun_cnt < lcnt) {
4293 lcnt = qp->lun_cnt;
4294 qpair = qp;
4295 continue;
4296 }
4297 }
4298 }
4299 BUG_ON(!qpair);
4300 qpair->lun_cnt++;
4301 h = qla_qpair_to_hint(tgt, qpair);
4302 BUG_ON(!h);
4303 rc = btree_insert64(&tgt->lun_qpair_map,
4304 cmd->unpacked_lun, h, GFP_ATOMIC);
4305 if (rc) {
4306 qpair->lun_cnt--;
4307 ql_log(ql_log_info, vha, 0xd039,
4308 "Unable to insert lun %llx into lun_qpair_map\n",
4309 cmd->unpacked_lun);
4310 }
4311 }
4312 } else {
4313 h = &tgt->qphints[0];
4314 }
4315out:
4316 cmd->qpair = h->qpair;
4317 cmd->se_cmd.cpuid = h->cpuid;
4318}
4319
51a07f84 4320static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4321 struct fc_port *sess,
51a07f84
NB		 4322 struct atio_from_isp *atio)
4323{
4324 struct se_session *se_sess = sess->se_sess;
4325 struct qla_tgt_cmd *cmd;
10e9cbb6 4326 int tag, cpu;
51a07f84 4327
10e9cbb6 4328 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
51a07f84
NB		 4329 if (tag < 0)
4330 return NULL;
4331
4332 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
4333 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
c5419e26 4334 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4335 memcpy(&cmd->atio, atio, sizeof(*atio));
4336 cmd->state = QLA_TGT_STATE_NEW;
4337 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4338 qlt_incr_num_pend_cmds(vha);
51a07f84
NB		 4339 cmd->vha = vha;
4340 cmd->se_cmd.map_tag = tag;
10e9cbb6 4341 cmd->se_cmd.map_cpu = cpu;
51a07f84
NB		 4342 cmd->sess = sess;
4343 cmd->loop_id = sess->loop_id;
4344 cmd->conf_compl_supported = sess->conf_compl_supported;
4345
1eb42f96 4346 cmd->trc_flags = 0;
9fce1254
KS		 4347 cmd->jiffies_at_alloc = get_jiffies_64();
4348
e326d22a
QT		 4349 cmd->unpacked_lun = scsilun_to_int(
4350 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4351 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4352 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4353 cmd->vp_idx = vha->vp_idx;
9fce1254 4354
51a07f84
NB		 4355 return cmd;
4356}
4357
2d70c103
NB		 4358/* ha->hardware_lock supposed to be held on entry */
4359static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4360 struct atio_from_isp *atio)
4361{
51a07f84 4362 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4363 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4364 struct fc_port *sess;
2d70c103 4365 struct qla_tgt_cmd *cmd;
5d964837 4366 unsigned long flags;
a4239945 4367 port_id_t id;
2d70c103
NB		 4368
4369 if (unlikely(tgt->tgt_stop)) {
667024a3 4370 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103 4371 "New command while device %p is shutting down\n", tgt);
7cf95f7e 4372 return -ENODEV;
2d70c103
NB		 4373 }
4374
a4239945
QT		 4375 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
4376 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
4377 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
4378 if (IS_SW_RESV_ADDR(id))
4379 return -EBUSY;
4380
51a07f84 4381 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
fb35265b
QT		 4382 if (unlikely(!sess))
4383 return -EFAULT;
e52a8b45
AP		 4384
4385 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4386 * session deletion, but it's still in sess_del_work wq */
726b8548 4387 if (sess->deleted) {
83548fe2 4388 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4389 "New command while old session %p is being deleted\n",
4390 sess);
4391 return -EFAULT;
4392 }
4393
51a07f84
NB		 4394 /*
4395 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4396 */
726b8548 4397 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4398 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4399 "%s: kref_get fail, %8phC oxid %x \n",
4400 __func__, sess->port_name,
4401 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4402 return -EFAULT;
4403 }
51a07f84
NB		 4404
4405 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4406 if (!cmd) {
667024a3 4407 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4408 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837
QT		 4409 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
4410 ha->tgt.tgt_ops->put_sess(sess);
4411 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
7cf95f7e 4412 return -EBUSY;
2d70c103
NB		 4413 }
4414
e07f8f65 4415 cmd->cmd_in_wq = 1;
1eb42f96 4416 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4417
726b8548 4418 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4419 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4420 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4421
2d70c103 4422 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4423 if (vha->flags.qpairs_available) {
4424 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4425 } else if (ha->msix_count) {
fb3269ba
QT		 4426 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4427 queue_work_on(smp_processor_id(), qla_tgt_wq,
4428 &cmd->work);
4429 else
4430 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4431 &cmd->work);
4432 } else {
4433 queue_work(qla_tgt_wq, &cmd->work);
4434 }
2d70c103 4435
82de802a 4436 return 0;
2d70c103
NB		 4437}
4438
4439/* ha->hardware_lock supposed to be held on entry */
5d964837 4440static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4441 int fn, void *iocb, int flags)
4442{
4443 struct scsi_qla_host *vha = sess->vha;
4444 struct qla_hw_data *ha = vha->hw;
4445 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4446 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
84905dfe 4447 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2d70c103
NB		 4448
4449 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4450 if (!mcmd) {
4451 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4452 "qla_target(%d): Allocation of management "
4453 "command failed, some commands and their data could "
4454 "leak\n", vha->vp_idx);
4455 return -ENOMEM;
4456 }
4457 memset(mcmd, 0, sizeof(*mcmd));
4458 mcmd->sess = sess;
4459
4460 if (iocb) {
4461 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4462 sizeof(mcmd->orig_iocb.imm_ntfy));
4463 }
4464 mcmd->tmr_func = fn;
4465 mcmd->flags = flags;
7c3f8fd1 4466 mcmd->reset_count = ha->base_qpair->chip_reset;
84905dfe 4467 mcmd->qpair = h->qpair;
72fcd4eb 4468 mcmd->vha = vha;
84905dfe
QT		 4469 mcmd->se_cmd.cpuid = h->cpuid;
4470 mcmd->unpacked_lun = lun;
2d70c103
NB		 4471
4472 switch (fn) {
2d70c103 4473 case QLA_TGT_LUN_RESET:
84905dfe
QT		 4474 case QLA_TGT_CLEAR_TS:
4475 case QLA_TGT_ABORT_TS:
4476 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
50435d42 4477 /* fall through */
84905dfe
QT		 4478 case QLA_TGT_CLEAR_ACA:
4479 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4480 mcmd->qpair = h->qpair;
4481 mcmd->se_cmd.cpuid = h->cpuid;
4482 break;
2d70c103 4483
84905dfe
QT		 4484 case QLA_TGT_TARGET_RESET:
4485 case QLA_TGT_NEXUS_LOSS_SESS:
4486 case QLA_TGT_NEXUS_LOSS:
4487 case QLA_TGT_ABORT_ALL:
4488 default:
4489 /* no-op */
4490 break;
2d70c103
NB		 4491 }
4492
84905dfe
QT		 4493 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4494 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4495 &mcmd->work);
4496
2d70c103
NB		 4497 return 0;
4498}
4499
4500/* ha->hardware_lock supposed to be held on entry */
4501static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4502{
4503 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4504 struct qla_hw_data *ha = vha->hw;
5d964837 4505 struct fc_port *sess;
f775bd14 4506 u64 unpacked_lun;
52c82823 4507 int fn;
7560151b 4508 unsigned long flags;
2d70c103 4509
2d70c103 4510 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4511
4512 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4513 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4514 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4515 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4516
f775bd14
QT		 4517 unpacked_lun =
4518 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103 4519
fb35265b 4520 if (sess == NULL || sess->deleted)
e52a8b45
AP		 4521 return -EFAULT;
4522
2d70c103
NB		 4523 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4524}
4525
4526/* ha->hardware_lock supposed to be held on entry */
4527static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4528 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4529{
4530 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4531 struct qla_hw_data *ha = vha->hw;
4532 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4533 u64 unpacked_lun;
2d70c103
NB		 4534 int rc;
4535
4536 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4537 if (mcmd == NULL) {
4538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4539 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4540 vha->vp_idx, __func__);
4541 return -ENOMEM;
4542 }
4543 memset(mcmd, 0, sizeof(*mcmd));
4544
4545 mcmd->sess = sess;
4546 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4547 sizeof(mcmd->orig_iocb.imm_ntfy));
4548
f775bd14
QT		 4549 unpacked_lun =
4550 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4551 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4552 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4553 mcmd->qpair = ha->base_qpair;
2d70c103 4554
be92fc3f 4555 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4556 le16_to_cpu(iocb->u.isp2x.seq_id));
4557 if (rc != 0) {
4558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4559 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4560 vha->vp_idx, rc);
4561 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4562 return -EFAULT;
4563 }
4564
4565 return 0;
4566}
4567
4568/* ha->hardware_lock supposed to be held on entry */
4569static int qlt_abort_task(struct scsi_qla_host *vha,
4570 struct imm_ntfy_from_isp *iocb)
4571{
4572 struct qla_hw_data *ha = vha->hw;
5d964837 4573 struct fc_port *sess;
2d70c103 4574 int loop_id;
7560151b 4575 unsigned long flags;
2d70c103
NB		 4576
4577 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4578
7560151b 4579 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4580 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4581 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4582
2d70c103
NB		 4583 if (sess == NULL) {
4584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4585 "qla_target(%d): task abort for unexisting "
4586 "session\n", vha->vp_idx);
0e8cd71c 4587 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4588 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4589 }
4590
4591 return __qlt_abort_task(vha, iocb, sess);
4592}
4593
a6ca8878
AP		 4594void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4595{
726b8548
QT		 4596 if (rc != MBS_COMMAND_COMPLETE) {
4597 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4598 "%s: se_sess %p / sess %p from"
4599 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4600 " LOGO failed: %#x\n",
4601 __func__,
4602 fcport->se_sess,
4603 fcport,
4604 fcport->port_name, fcport->loop_id,
4605 fcport->d_id.b.domain, fcport->d_id.b.area,
4606 fcport->d_id.b.al_pa, rc);
4607 }
4608
4609 fcport->logout_completed = 1;
a6ca8878
AP		 4610}
4611
a6ca8878
AP		 4612/*
4613* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4614*
4615* Schedules sessions with matching port_id/loop_id but different wwn for
4616* deletion. Returns existing session with matching wwn if present.
4617* Null otherwise.
4618*/
726b8548
QT		 4619struct fc_port *
4620qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4621 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4622{
5d964837 4623 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4624 uint64_t other_wwn;
4625
b7bd104e
AP		 4626 *conflict_sess = NULL;
4627
5d964837 4628 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4629
4630 other_wwn = wwn_to_u64(other_sess->port_name);
4631
4632 if (wwn == other_wwn) {
4633 WARN_ON(sess);
4634 sess = other_sess;
4635 continue;
4636 }
4637
4638 /* find other sess with nport_id collision */
37cacc0a 4639 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4640 if (loop_id != other_sess->loop_id) {
726b8548 4641 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c,
a6ca8878
AP		 4642 "Invalidating sess %p loop_id %d wwn %llx.\n",
4643 other_sess, other_sess->loop_id, other_wwn);
4644
4645 /*
4646 * logout_on_delete is set by default, but another
4647 * session that has the same s_id/loop_id combo
4648 * might have cleared it when requested this session
4649 * deletion, so don't touch it
4650 */
94cff6e1 4651 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4652 } else {
4653 /*
4654 * Another wwn used to have our s_id/loop_id
b7bd104e 4655 * kill the session, but don't free the loop_id
a6ca8878 4656 */
83548fe2 4657 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b,
726b8548
QT		 4658 "Invalidating sess %p loop_id %d wwn %llx.\n",
4659 other_sess, other_sess->loop_id, other_wwn);
4660
b7bd104e 4661 other_sess->keep_nport_handle = 1;
ba743f91
QT		 4662 if (other_sess->disc_state != DSC_DELETED)
4663 *conflict_sess = other_sess;
94cff6e1 4664 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4665 }
4666 continue;
4667 }
4668
4669 /* find other sess with nport handle collision */
726b8548
QT		 4670 if ((loop_id == other_sess->loop_id) &&
4671 (loop_id != FC_NO_LOOP_ID)) {
4672 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d,
a6ca8878
AP		 4673 "Invalidating sess %p loop_id %d wwn %llx.\n",
4674 other_sess, other_sess->loop_id, other_wwn);
4675
4676 /* Same loop_id but different s_id
4677 * Ok to kill and logout */
94cff6e1 4678 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4679 }
4680 }
4681
4682 return sess;
4683}
4684
daddf5cf
AP		 4685/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4686static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4687{
4688 struct qla_tgt_sess_op *op;
4689 struct qla_tgt_cmd *cmd;
4690 uint32_t key;
4691 int count = 0;
8b631d87 4692 unsigned long flags;
daddf5cf
AP		 4693
4694 key = (((u32)s_id->b.domain << 16) |
4695 ((u32)s_id->b.area << 8) |
4696 ((u32)s_id->b.al_pa));
4697
8b631d87 4698 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4699 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4700 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4701
daddf5cf
AP		 4702 if (op_key == key) {
4703 op->aborted = true;
4704 count++;
4705 }
4706 }
41dc529a
QT		 4707
4708 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4709 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
bd432bb5 4710
41dc529a
QT		 4711 if (op_key == key) {
4712 op->aborted = true;
4713 count++;
4714 }
4715 }
4716
daddf5cf
AP		 4717 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4718 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
bd432bb5 4719
daddf5cf 4720 if (cmd_key == key) {
193b50b9 4721 cmd->aborted = 1;
daddf5cf
AP		 4722 count++;
4723 }
4724 }
8b631d87 4725 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4726
4727 return count;
4728}
4729
9cd883f0
QT		 4730static int qlt_handle_login(struct scsi_qla_host *vha,
4731 struct imm_ntfy_from_isp *iocb)
4732{
4733 struct fc_port *sess = NULL, *conflict_sess = NULL;
4734 uint64_t wwn;
4735 port_id_t port_id;
4736 uint16_t loop_id, wd3_lo;
4737 int res = 0;
4738 struct qlt_plogi_ack_t *pla;
4739 unsigned long flags;
4740
4741 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4742
4743 port_id.b.domain = iocb->u.isp24.port_id[2];
4744 port_id.b.area = iocb->u.isp24.port_id[1];
4745 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4746 port_id.b.rsvd_1 = 0;
4747
4748 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4749
4750 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4751 abort_cmds_for_s_id(vha, &port_id);
4752
4753 if (wwn) {
4754 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4755 sess = qlt_find_sess_invalidate_other(vha, wwn,
4756 port_id, loop_id, &conflict_sess);
4757 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
aa9e6d7b
QT		 4758 } else {
4759 ql_dbg(ql_dbg_disc, vha, 0xffff,
4760 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4761 __func__, __LINE__, loop_id, port_id.b24);
4762 qlt_send_term_imm_notif(vha, iocb, 1);
4763 goto out;
9cd883f0
QT		 4764 }
4765
4766 if (IS_SW_RESV_ADDR(port_id)) {
4767 res = 1;
4768 goto out;
4769 }
4770
4771 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4772 if (!pla) {
48acad09
QT		 4773 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4774 "%s %d %8phC Term INOT due to mem alloc fail",
4775 __func__, __LINE__,
4776 iocb->u.isp24.port_name);
9cd883f0
QT		 4777 qlt_send_term_imm_notif(vha, iocb, 1);
4778 goto out;
4779 }
4780
4781 if (conflict_sess) {
4782 conflict_sess->login_gen++;
4783 qlt_plogi_ack_link(vha, pla, conflict_sess,
4784 QLT_PLOGI_LINK_CONFLICT);
4785 }
4786
4787 if (!sess) {
4788 pla->ref_count++;
4789 ql_dbg(ql_dbg_disc, vha, 0xffff,
4790 "%s %d %8phC post new sess\n",
4791 __func__, __LINE__, iocb->u.isp24.port_name);
a4239945
QT		 4792 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4793 qla24xx_post_newsess_work(vha, &port_id,
4794 iocb->u.isp24.port_name,
4795 iocb->u.isp24.u.plogi.node_name,
4796 pla, FC4_TYPE_UNKNOWN);
4797 else
4798 qla24xx_post_newsess_work(vha, &port_id,
4799 iocb->u.isp24.port_name, NULL,
4800 pla, FC4_TYPE_UNKNOWN);
4801
9cd883f0
QT		 4802 goto out;
4803 }
4804
cd4ed6b4
QT		 4805 if (sess->disc_state == DSC_UPD_FCPORT) {
4806 u16 sec;
4807
4808 /*
4809 * Remote port registration is still going on from
4810 * previous login. Allow it to finish before we
4811 * accept the new login.
4812 */
4813 sess->next_disc_state = DSC_DELETE_PEND;
4814 sec = jiffies_to_msecs(jiffies -
4815 sess->jiffies_at_registration) / 1000;
4816 if (sess->sec_since_registration < sec && sec &&
4817 !(sec % 5)) {
4818 sess->sec_since_registration = sec;
4819 ql_dbg(ql_dbg_disc, vha, 0xffff,
4820 "%s %8phC - Slow Rport registration (%d Sec)\n",
4821 __func__, sess->port_name, sec);
4822 }
4823
4824 if (!conflict_sess)
4825 kmem_cache_free(qla_tgt_plogi_cachep, pla);
4826
4827 qlt_send_term_imm_notif(vha, iocb, 1);
4828 goto out;
4829 }
4830
9cd883f0
QT		 4831 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4832 sess->d_id = port_id;
4833 sess->login_gen++;
4834
4835 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4836 sess->fw_login_state = DSC_LS_PRLI_PEND;
4837 sess->local = 0;
4838 sess->loop_id = loop_id;
4839 sess->d_id = port_id;
4840 sess->fw_login_state = DSC_LS_PRLI_PEND;
4841 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4842
4843 if (wd3_lo & BIT_7)
4844 sess->conf_compl_supported = 1;
4845
4846 if ((wd3_lo & BIT_4) == 0)
4847 sess->port_type = FCT_INITIATOR;
4848 else
4849 sess->port_type = FCT_TARGET;
4850
4851 } else
4852 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4853
4854
4855 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4856 "%s %d %8phC DS %d\n",
4857 __func__, __LINE__, sess->port_name, sess->disc_state);
4858
4859 switch (sess->disc_state) {
4860 case DSC_DELETED:
4861 qlt_plogi_ack_unref(vha, pla);
4862 break;
4863
4864 default:
4865 /*
4866 * Under normal circumstances we want to release nport handle
4867 * during LOGO process to avoid nport handle leaks inside FW.
4868 * The exception is when LOGO is done while another PLOGI with
4869 * the same nport handle is waiting as might be the case here.
4870 * Note: there is always a possibily of a race where session
4871 * deletion has already started for other reasons (e.g. ACL
4872 * removal) and now PLOGI arrives:
4873 * 1. if PLOGI arrived in FW after nport handle has been freed,
4874 * FW must have assigned this PLOGI a new/same handle and we
4875 * can proceed ACK'ing it as usual when session deletion
4876 * completes.
4877 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4878 * bit reached it, the handle has now been released. We'll
4879 * get an error when we ACK this PLOGI. Nothing will be sent
4880 * back to initiator. Initiator should eventually retry
4881 * PLOGI and situation will correct itself.
4882 */
4883 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4884 (sess->d_id.b24 == port_id.b24));
4885
4886 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4887 "%s %d %8phC post del sess\n",
4888 __func__, __LINE__, sess->port_name);
4889
4890
d8630bb9 4891 qlt_schedule_sess_for_deletion(sess);
9cd883f0
QT		 4892 break;
4893 }
4894out:
4895 return res;
4896}
4897
2d70c103
NB		 4898/*
4899 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4900 */
4901static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4902 struct imm_ntfy_from_isp *iocb)
4903{
a6ca8878 4904 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4905 struct qla_hw_data *ha = vha->hw;
5d964837 4906 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4907 uint64_t wwn;
4908 port_id_t port_id;
4909 uint16_t loop_id;
4910 uint16_t wd3_lo;
2d70c103 4911 int res = 0;
9cd883f0 4912 unsigned long flags;
2d70c103 4913
a6ca8878
AP		 4914 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4915
4916 port_id.b.domain = iocb->u.isp24.port_id[2];
4917 port_id.b.area = iocb->u.isp24.port_id[1];
4918 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4919 port_id.b.rsvd_1 = 0;
4920
4921 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4922
726b8548
QT		 4923 ql_dbg(ql_dbg_disc, vha, 0xf026,
4924 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4925 vha->vp_idx, iocb->u.isp24.port_id[2],
4926 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4927 iocb->u.isp24.status_subcode, loop_id,
4928 iocb->u.isp24.port_name);
2d70c103 4929
a6ca8878
AP		 4930 /* res = 1 means ack at the end of thread
4931 * res = 0 means ack async/later.
4932 */
2d70c103
NB		 4933 switch (iocb->u.isp24.status_subcode) {
4934 case ELS_PLOGI:
9cd883f0
QT		 4935 res = qlt_handle_login(vha, iocb);
4936 break;
a6ca8878 4937
9cd883f0
QT		 4938 case ELS_PRLI:
4939 if (N2N_TOPO(ha)) {
4940 sess = qla2x00_find_fcport_by_wwpn(vha,
4941 iocb->u.isp24.port_name, 1);
726b8548 4942
9cd883f0
QT		 4943 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4944 ql_dbg(ql_dbg_disc, vha, 0xffff,
4945 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4946 __func__, __LINE__,
4947 iocb->u.isp24.port_name);
4948 qlt_send_term_imm_notif(vha, iocb, 1);
4949 break;
4950 }
726b8548 4951
9cd883f0 4952 res = qlt_handle_login(vha, iocb);
726b8548
QT		 4953 break;
4954 }
4955
a4239945
QT		 4956 if (IS_SW_RESV_ADDR(port_id)) {
4957 res = 1;
4958 break;
4959 }
4960
a6ca8878
AP		 4961 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4962
7560151b
QT		 4963 if (wwn) {
4964 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4965 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4966 loop_id, &conflict_sess);
7560151b
QT		 4967 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4968 }
b7bd104e
AP		 4969
4970 if (conflict_sess) {
5ef696aa
QT		 4971 switch (conflict_sess->disc_state) {
4972 case DSC_DELETED:
4973 case DSC_DELETE_PEND:
4974 break;
4975 default:
4976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4977 "PRLI with conflicting sess %p port %8phC\n",
4978 conflict_sess, conflict_sess->port_name);
4979 conflict_sess->fw_login_state =
4980 DSC_LS_PORT_UNAVAIL;
4981 qlt_send_term_imm_notif(vha, iocb, 1);
4982 res = 0;
4983 break;
4984 }
b7bd104e 4985 }
a6ca8878
AP		 4986
4987 if (sess != NULL) {
a4239945 4988 bool delete = false;
cd4ed6b4 4989 int sec;
bd432bb5 4990
82abdcaf
QT		 4991 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4992 switch (sess->fw_login_state) {
a4239945 4993 case DSC_LS_PLOGI_PEND:
82abdcaf
QT		 4994 case DSC_LS_PLOGI_COMP:
4995 case DSC_LS_PRLI_COMP:
4996 break;
4997 default:
a4239945
QT		 4998 delete = true;
4999 break;
5000 }
5001
5002 switch (sess->disc_state) {
cd4ed6b4
QT		 5003 case DSC_UPD_FCPORT:
5004 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5005 flags);
5006
5007 sec = jiffies_to_msecs(jiffies -
5008 sess->jiffies_at_registration)/1000;
5009 if (sess->sec_since_registration < sec && sec &&
5010 !(sec % 5)) {
5011 sess->sec_since_registration = sec;
5012 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
5013 "%s %8phC : Slow Rport registration(%d Sec)\n",
5014 __func__, sess->port_name, sec);
5015 }
5016 qlt_send_term_imm_notif(vha, iocb, 1);
5017 return 0;
5018
a4239945
QT		 5019 case DSC_LOGIN_PEND:
5020 case DSC_GPDB:
a4239945
QT		 5021 case DSC_LOGIN_COMPLETE:
5022 case DSC_ADISC:
5023 delete = false;
5024 break;
5025 default:
5026 break;
5027 }
5028
5029 if (delete) {
82abdcaf
QT		 5030 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
5031 flags);
a6ca8878
AP		 5032 /*
5033 * Impatient initiator sent PRLI before last
5034 * PLOGI could finish. Will force him to re-try,
5035 * while last one finishes.
5036 */
df673274 5037 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 5038 "sess %p PRLI received, before plogi ack.\n",
5039 sess);
5040 qlt_send_term_imm_notif(vha, iocb, 1);
5041 res = 0;
5042 break;
5043 }
5044
5045 /*
5046 * This shouldn't happen under normal circumstances,
5047 * since we have deleted the old session during PLOGI
5048 */
df673274 5049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 5050 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5051 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5052
5053 sess->local = 0;
5054 sess->loop_id = loop_id;
37cacc0a 5055 sess->d_id = port_id;
726b8548 5056 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 5057
5058 if (wd3_lo & BIT_7)
5059 sess->conf_compl_supported = 1;
5060
726b8548
QT		 5061 if ((wd3_lo & BIT_4) == 0)
5062 sess->port_type = FCT_INITIATOR;
5063 else
5064 sess->port_type = FCT_TARGET;
82abdcaf
QT		 5065
5066 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
df673274
AP		 5067 }
5068 res = 1; /* send notify ack */
5069
5070 /* Make session global (not used in fabric mode) */
5071 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 5072 if (sess) {
83548fe2 5073 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 5074 "%s %d %8phC post nack\n",
5075 __func__, __LINE__, sess->port_name);
5076 qla24xx_post_nack_work(vha, sess, iocb,
5077 SRB_NACK_PRLI);
5078 res = 0;
5079 } else {
5080 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5081 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5082 qla2xxx_wake_dpc(vha);
5083 }
a6ca8878 5084 } else {
726b8548 5085 if (sess) {
83548fe2 5086 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 5087 "%s %d %8phC post nack\n",
5088 __func__, __LINE__, sess->port_name);
726b8548
QT		 5089 qla24xx_post_nack_work(vha, sess, iocb,
5090 SRB_NACK_PRLI);
5091 res = 0;
5092 }
5093 }
a6ca8878
AP		 5094 break;
5095
41dc529a
QT		 5096 case ELS_TPRLO:
5097 if (le16_to_cpu(iocb->u.isp24.flags) &
5098 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5099 loop_id = 0xFFFF;
5100 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5101 res = 1;
5102 break;
5103 }
81881861 5104 /* fall through */
2d70c103
NB		 5105 case ELS_LOGO:
5106 case ELS_PRLO:
726b8548
QT		 5107 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5108 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5109 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5110
5111 if (sess) {
5112 sess->login_gen++;
5113 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 5114 sess->logo_ack_needed = 1;
5115 memcpy(sess->iocb, iocb, IOCB_SIZE);
5116 }
5117
2d70c103 5118 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 5119
83548fe2 5120 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 5121 "%s: logo %llx res %d sess %p ",
5122 __func__, wwn, res, sess);
5123 if (res == 0) {
41dc529a
QT		 5124 /*
5125 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5126 * for LOGO_ACK & sess delete
5127 */
726b8548
QT		 5128 BUG_ON(!sess);
5129 res = 0;
5130 } else {
41dc529a 5131 /* cmd did not go to upper layer. */
726b8548 5132 if (sess) {
d8630bb9 5133 qlt_schedule_sess_for_deletion(sess);
726b8548
QT		 5134 res = 0;
5135 }
5136 /* else logo will be ack */
5137 }
2d70c103
NB		 5138 break;
5139 case ELS_PDISC:
5140 case ELS_ADISC:
5141 {
0e8cd71c 5142 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
bd432bb5 5143
2d70c103 5144 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5145 qlt_send_notify_ack(ha->base_qpair,
5146 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5147 tgt->link_reinit_iocb_pending = 0;
5148 }
726b8548
QT		 5149
5150 sess = qla2x00_find_fcport_by_wwpn(vha,
5151 iocb->u.isp24.port_name, 1);
5152 if (sess) {
83548fe2 5153 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 5154 "sess %p lid %d|%d DS %d LS %d\n",
5155 sess, sess->loop_id, loop_id,
5156 sess->disc_state, sess->fw_login_state);
5157 }
5158
2d70c103
NB		 5159 res = 1; /* send notify ack */
5160 break;
5161 }
5162
a6ca8878 5163 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 5164 default:
5165 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5166 "qla_target(%d): Unsupported ELS command %x "
5167 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5168 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5169 break;
5170 }
5171
9cd883f0
QT		 5172 ql_dbg(ql_dbg_disc, vha, 0xf026,
5173 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5174 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5175
2d70c103
NB		 5176 return res;
5177}
5178
2d70c103
NB		 5179/*
5180 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5181 */
5182static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5183 struct imm_ntfy_from_isp *iocb)
5184{
5185 struct qla_hw_data *ha = vha->hw;
5186 uint32_t add_flags = 0;
5187 int send_notify_ack = 1;
5188 uint16_t status;
5189
5190 status = le16_to_cpu(iocb->u.isp2x.status);
5191 switch (status) {
5192 case IMM_NTFY_LIP_RESET:
5193 {
5194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5195 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5196 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5197 iocb->u.isp24.status_subcode);
5198
5199 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5200 send_notify_ack = 0;
5201 break;
5202 }
5203
5204 case IMM_NTFY_LIP_LINK_REINIT:
5205 {
0e8cd71c 5206 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
bd432bb5 5207
2d70c103
NB		 5208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5209 "qla_target(%d): LINK REINIT (loop %#x, "
5210 "subcode %x)\n", vha->vp_idx,
5211 le16_to_cpu(iocb->u.isp24.nport_handle),
5212 iocb->u.isp24.status_subcode);
5213 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5214 qlt_send_notify_ack(ha->base_qpair,
5215 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5216 }
5217 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5218 tgt->link_reinit_iocb_pending = 1;
5219 /*
5220 * QLogic requires to wait after LINK REINIT for possible
5221 * PDISC or ADISC ELS commands
5222 */
5223 send_notify_ack = 0;
5224 break;
5225 }
5226
5227 case IMM_NTFY_PORT_LOGOUT:
5228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5229 "qla_target(%d): Port logout (loop "
5230 "%#x, subcode %x)\n", vha->vp_idx,
5231 le16_to_cpu(iocb->u.isp24.nport_handle),
5232 iocb->u.isp24.status_subcode);
5233
5234 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5235 send_notify_ack = 0;
5236 /* The sessions will be cleared in the callback, if needed */
5237 break;
5238
5239 case IMM_NTFY_GLBL_TPRLO:
5240 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5241 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5242 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5243 send_notify_ack = 0;
5244 /* The sessions will be cleared in the callback, if needed */
5245 break;
5246
5247 case IMM_NTFY_PORT_CONFIG:
5248 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5249 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5250 status);
5251 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5252 send_notify_ack = 0;
5253 /* The sessions will be cleared in the callback, if needed */
5254 break;
5255
5256 case IMM_NTFY_GLBL_LOGO:
5257 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5258 "qla_target(%d): Link failure detected\n",
5259 vha->vp_idx);
5260 /* I_T nexus loss */
5261 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5262 send_notify_ack = 0;
5263 break;
5264
5265 case IMM_NTFY_IOCB_OVERFLOW:
5266 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5267 "qla_target(%d): Cannot provide requested "
5268 "capability (IOCB overflowed the immediate notify "
5269 "resource count)\n", vha->vp_idx);
5270 break;
5271
5272 case IMM_NTFY_ABORT_TASK:
5273 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5274 "qla_target(%d): Abort Task (S %08x I %#x -> "
5275 "L %#x)\n", vha->vp_idx,
5276 le16_to_cpu(iocb->u.isp2x.seq_id),
5277 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5278 le16_to_cpu(iocb->u.isp2x.lun));
5279 if (qlt_abort_task(vha, iocb) == 0)
5280 send_notify_ack = 0;
5281 break;
5282
5283 case IMM_NTFY_RESOURCE:
5284 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5285 "qla_target(%d): Out of resources, host %ld\n",
5286 vha->vp_idx, vha->host_no);
5287 break;
5288
5289 case IMM_NTFY_MSG_RX:
5290 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5291 "qla_target(%d): Immediate notify task %x\n",
5292 vha->vp_idx, iocb->u.isp2x.task_flags);
2d70c103
NB		 5293 break;
5294
5295 case IMM_NTFY_ELS:
5296 if (qlt_24xx_handle_els(vha, iocb) == 0)
5297 send_notify_ack = 0;
5298 break;
2d70c103
NB		 5299 default:
5300 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5301 "qla_target(%d): Received unknown immediate "
5302 "notify status %x\n", vha->vp_idx, status);
5303 break;
5304 }
5305
5306 if (send_notify_ack)
82de802a
QT		 5307 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5308 0, 0);
2d70c103
NB		 5309}
5310
5311/*
5312 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5313 * This function sends busy to ISP 2xxx or 24xx.
5314 */
82de802a 5315static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5316 struct atio_from_isp *atio, uint16_t status)
5317{
82de802a 5318 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5319 struct ctio7_to_24xx *ctio24;
5320 struct qla_hw_data *ha = vha->hw;
5321 request_t *pkt;
5d964837 5322 struct fc_port *sess = NULL;
7560151b 5323 unsigned long flags;
f7e761f5 5324 u16 temp;
8ea4faf8
QT		 5325 port_id_t id;
5326
5327 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2];
5328 id.b.area = atio->u.isp24.fcp_hdr.s_id[1];
5329 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0];
5330 id.b.rsvd_1 = 0;
2d70c103 5331
7560151b 5332 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
8ea4faf8 5333 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
7560151b 5334 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5335 if (!sess) {
82de802a 5336 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5337 return 0;
2d70c103
NB		 5338 }
5339 /* Sending marker isn't necessary, since we called from ISR */
5340
82de802a 5341 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5342 if (!pkt) {
667024a3 5343 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5344 "qla_target(%d): %s failed: unable to allocate "
5345 "request packet", vha->vp_idx, __func__);
33e79977 5346 return -ENOMEM;
2d70c103
NB		 5347 }
5348
60a9eadb 5349 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5350 pkt->entry_count = 1;
5351 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5352
5353 ctio24 = (struct ctio7_to_24xx *)pkt;
5354 ctio24->entry_type = CTIO_TYPE7;
5355 ctio24->nport_handle = sess->loop_id;
ad950360 5356 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103
NB		 5357 ctio24->vp_index = vha->vp_idx;
5358 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
5359 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
5360 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
5361 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5362 temp = (atio->u.isp24.attr << 9) |
2d70c103 5363 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5364 CTIO7_FLAGS_DONT_RET_CTIO;
5365 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5366 /*
5367 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5368 * if the explicit conformation is used.
5369 */
5370 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
5371 ctio24->u.status1.scsi_status = cpu_to_le16(status);
e25f7654
QT		 5372
5373 ctio24->u.status1.residual = get_datalen_for_atio(atio);
5374
5375 if (ctio24->u.status1.residual != 0)
5376 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
5377
63163e06
HM		 5378 /* Memory Barrier */
5379 wmb();
8abfa9e2
QT		 5380 if (qpair->reqq_start_iocbs)
5381 qpair->reqq_start_iocbs(qpair);
5382 else
5383 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5384 return 0;
5385}
5386
5387/*
5388 * This routine is used to allocate a command for either a QFull condition
5389 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5390 * out previously.
5391 */
5392static void
5393qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5394 struct atio_from_isp *atio, uint16_t status, int qfull)
5395{
5396 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5397 struct qla_hw_data *ha = vha->hw;
5d964837 5398 struct fc_port *sess;
33e79977
QT		 5399 struct se_session *se_sess;
5400 struct qla_tgt_cmd *cmd;
10e9cbb6 5401 int tag, cpu;
82de802a 5402 unsigned long flags;
33e79977
QT		 5403
5404 if (unlikely(tgt->tgt_stop)) {
5405 ql_dbg(ql_dbg_io, vha, 0x300a,
5406 "New command while device %p is shutting down\n", tgt);
5407 return;
5408 }
5409
5410 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5411 vha->hw->tgt.num_qfull_cmds_dropped++;
5412 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5413 vha->qla_stats.stat_max_qfull_cmds_dropped)
5414 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5415 vha->hw->tgt.num_qfull_cmds_dropped;
5416
5417 ql_dbg(ql_dbg_io, vha, 0x3068,
5418 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5419 vha->vp_idx, __func__,
5420 vha->hw->tgt.num_qfull_cmds_dropped);
5421
5422 qlt_chk_exch_leak_thresh_hold(vha);
5423 return;
5424 }
5425
5426 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5427 (vha, atio->u.isp24.fcp_hdr.s_id);
5428 if (!sess)
5429 return;
5430
5431 se_sess = sess->se_sess;
5432
10e9cbb6 5433 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
c04466c1 5434 if (tag < 0) {
33e79977
QT		 5435 ql_dbg(ql_dbg_io, vha, 0x3009,
5436 "qla_target(%d): %s: Allocation of cmd failed\n",
5437 vha->vp_idx, __func__);
5438
5439 vha->hw->tgt.num_qfull_cmds_dropped++;
5440 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5441 vha->qla_stats.stat_max_qfull_cmds_dropped)
5442 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5443 vha->hw->tgt.num_qfull_cmds_dropped;
5444
5445 qlt_chk_exch_leak_thresh_hold(vha);
5446 return;
5447 }
5448
c04466c1 5449 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
33e79977
QT		 5450 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
5451
5452 qlt_incr_num_pend_cmds(vha);
5453 INIT_LIST_HEAD(&cmd->cmd_list);
5454 memcpy(&cmd->atio, atio, sizeof(*atio));
5455
5456 cmd->tgt = vha->vha_tgt.qla_tgt;
5457 cmd->vha = vha;
7c3f8fd1 5458 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5459 cmd->q_full = 1;
82de802a 5460 cmd->qpair = ha->base_qpair;
10e9cbb6 5461 cmd->se_cmd.map_cpu = cpu;
33e79977
QT		 5462
5463 if (qfull) {
5464 cmd->q_full = 1;
5465 /* NOTE: borrowing the state field to carry the status */
5466 cmd->state = status;
5467 } else
5468 cmd->term_exchg = 1;
5469
82de802a 5470 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5471 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5472
5473 vha->hw->tgt.num_qfull_cmds_alloc++;
5474 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5475 vha->qla_stats.stat_max_qfull_cmds_alloc)
5476 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5477 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5478 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5479}
5480
5481int
82de802a 5482qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5483{
82de802a 5484 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5485 struct qla_hw_data *ha = vha->hw;
5486 unsigned long flags;
5487 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5488 struct list_head free_list, q_full_list;
33e79977
QT		 5489 int rc = 0;
5490
5491 if (list_empty(&ha->tgt.q_full_list))
5492 return 0;
5493
5494 INIT_LIST_HEAD(&free_list);
82de802a 5495 INIT_LIST_HEAD(&q_full_list);
33e79977 5496
82de802a 5497 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5498 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5499 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5500 return 0;
5501 }
5502
82de802a
QT		 5503 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5504 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5505
5506 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5507 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5508 if (cmd->q_full)
5509 /* cmd->state is a borrowed field to hold status */
82de802a 5510 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5511 else if (cmd->term_exchg)
82de802a 5512 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5513
5514 if (rc == -ENOMEM)
5515 break;
5516
5517 if (cmd->q_full)
5518 ql_dbg(ql_dbg_io, vha, 0x3006,
5519 "%s: busy sent for ox_id[%04x]\n", __func__,
5520 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5521 else if (cmd->term_exchg)
5522 ql_dbg(ql_dbg_io, vha, 0x3007,
5523 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5524 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5525 else
5526 ql_dbg(ql_dbg_io, vha, 0x3008,
5527 "%s: Unexpected cmd in QFull list %p\n", __func__,
5528 cmd);
5529
5530 list_del(&cmd->cmd_list);
5531 list_add_tail(&cmd->cmd_list, &free_list);
5532
5533 /* piggy back on hardware_lock for protection */
5534 vha->hw->tgt.num_qfull_cmds_alloc--;
5535 }
82de802a 5536 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5537
5538 cmd = NULL;
5539
5540 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5541 list_del(&cmd->cmd_list);
5542 /* This cmd was never sent to TCM. There is no need
5543 * to schedule free or call free_cmd
5544 */
5545 qlt_free_cmd(cmd);
5546 }
82de802a
QT		 5547
5548 if (!list_empty(&q_full_list)) {
5549 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5550 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5551 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5552 }
5553
33e79977
QT		 5554 return rc;
5555}
5556
5557static void
82de802a
QT		 5558qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5559 uint16_t status)
33e79977
QT		 5560{
5561 int rc = 0;
82de802a 5562 struct scsi_qla_host *vha = qpair->vha;
33e79977 5563
82de802a 5564 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5565 if (rc == -ENOMEM)
5566 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5567}
5568
5569static int
82de802a
QT		 5570qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5571 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5572{
5573 struct qla_hw_data *ha = vha->hw;
8b666809 5574 unsigned long flags;
33e79977
QT		 5575
5576 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5577 return 0;
5578
8b666809
QT		 5579 if (!ha_locked)
5580 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5581 qlt_send_busy(qpair, atio, qla_sam_status);
8b666809
QT		 5582 if (!ha_locked)
5583 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5584
33e79977 5585 return 1;
2d70c103
NB		 5586}
5587
5588/* ha->hardware_lock supposed to be held on entry */
5589/* called via callback from qla2xxx */
5590static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5591 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5592{
5593 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5594 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5595 int rc;
7cf95f7e 5596 unsigned long flags = 0;
2d70c103
NB		 5597
5598 if (unlikely(tgt == NULL)) {
ec7193e2 5599 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5600 "ATIO pkt, but no tgt (ha %p)", ha);
5601 return;
5602 }
2d70c103
NB		 5603 /*
5604 * In tgt_stop mode we also should allow all requests to pass.
5605 * Otherwise, some commands can stuck.
5606 */
5607
2f424b9b 5608 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5609
5610 switch (atio->u.raw.entry_type) {
5611 case ATIO_TYPE7:
2d70c103
NB		 5612 if (unlikely(atio->u.isp24.exchange_addr ==
5613 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
667024a3 5614 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5615 "qla_target(%d): ATIO_TYPE7 "
5616 "received with UNKNOWN exchange address, "
5617 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5618 if (!ha_locked)
5619 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5620 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
2f424b9b 5621 if (!ha_locked)
82de802a
QT		 5622 spin_unlock_irqrestore(&ha->hardware_lock,
5623 flags);
2d70c103
NB		 5624 break;
5625 }
33e79977 5626
33e79977 5627 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5628 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5629 atio, ha_locked);
33e79977 5630 if (rc != 0) {
2f424b9b 5631 tgt->atio_irq_cmd_count--;
33e79977
QT		 5632 return;
5633 }
2d70c103 5634 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5635 } else {
2d70c103 5636 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5637 }
2d70c103 5638 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5639 if (!ha_locked)
5640 spin_lock_irqsave(&ha->hardware_lock, flags);
5641 switch (rc) {
5642 case -ENODEV:
5643 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5644 "qla_target: Unable to send command to target\n");
5645 break;
5646 case -EBADF:
5647 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5648 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
82de802a
QT		 5649 qlt_send_term_exchange(ha->base_qpair, NULL,
5650 atio, 1, 0);
7cf95f7e
QT		 5651 break;
5652 case -EBUSY:
5653 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5654 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5655 vha->vp_idx);
5656 qlt_send_busy(ha->base_qpair, atio,
5657 tc_sam_status);
5658 break;
5659 default:
5660 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5661 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5662 vha->vp_idx);
5663 qlt_send_busy(ha->base_qpair, atio,
5664 qla_sam_status);
5665 break;
2d70c103 5666 }
7cf95f7e
QT		 5667 if (!ha_locked)
5668 spin_unlock_irqrestore(&ha->hardware_lock,
5669 flags);
2d70c103
NB		 5670 }
5671 break;
5672
5673 case IMMED_NOTIFY_TYPE:
5674 {
5675 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5676 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5677 "qla_target(%d): Received ATIO packet %x "
5678 "with error status %x\n", vha->vp_idx,
5679 atio->u.raw.entry_type,
5680 atio->u.isp2x.entry_status);
5681 break;
5682 }
5683 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5684
5685 if (!ha_locked)
5686 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5687 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5688 if (!ha_locked)
5689 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5690 break;
5691 }
5692
5693 default:
5694 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5695 "qla_target(%d): Received unknown ATIO atio "
5696 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5697 break;
5698 }
5699
2f424b9b 5700 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5701}
5702
0691094f
QT		 5703/*
5704 * qpair lock is assume to be held
5705 * rc = 0 : send terminate & abts respond
5706 * rc != 0: do not send term & abts respond
5707 */
5708static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5709 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5710{
5711 struct qla_hw_data *ha = vha->hw;
5712 int rc = 0;
5713
5714 /*
5715 * Detect unresolved exchange. If the same ABTS is unable
5716 * to terminate an existing command and the same ABTS loops
5717 * between FW & Driver, then force FW dump. Under 1 jiff,
5718 * we should see multiple loops.
5719 */
5720 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5721 qpair->retry_term_jiff == jiffies) {
5722 /* found existing exchange */
5723 qpair->retry_term_cnt++;
5724 if (qpair->retry_term_cnt >= 5) {
5725 rc = EIO;
5726 qpair->retry_term_cnt = 0;
5727 ql_log(ql_log_warn, vha, 0xffff,
5728 "Unable to send ABTS Respond. Dumping firmware.\n");
5729 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5730 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5731
5732 if (qpair == ha->base_qpair)
5733 ha->isp_ops->fw_dump(vha, 1);
5734 else
5735 ha->isp_ops->fw_dump(vha, 0);
5736
5737 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5738 qla2xxx_wake_dpc(vha);
5739 }
5740 } else if (qpair->retry_term_jiff != jiffies) {
5741 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5742 qpair->retry_term_cnt = 0;
5743 qpair->retry_term_jiff = jiffies;
5744 }
5745
5746 return rc;
5747}
5748
6b0431d6
QT		 5749
5750static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5751 struct rsp_que *rsp, response_t *pkt)
5752{
5753 struct abts_resp_from_24xx_fw *entry =
5754 (struct abts_resp_from_24xx_fw *)pkt;
5755 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5756 struct qla_tgt_mgmt_cmd *mcmd;
5757 struct qla_hw_data *ha = vha->hw;
5758
81bcf1c5 5759 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
6b0431d6
QT		 5760 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5761 ql_dbg(ql_dbg_async, vha, 0xe064,
5762 "qla_target(%d): ABTS Comp without mcmd\n",
5763 vha->vp_idx);
5764 return;
5765 }
5766
5767 if (mcmd)
5768 vha = mcmd->vha;
5769 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5770
5771 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5772 "ABTS_RESP_24XX: compl_status %x\n",
5773 entry->compl_status);
5774
5775 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
5776 if ((entry->error_subcode1 == 0x1E) &&
5777 (entry->error_subcode2 == 0)) {
5778 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5779 ha->tgt.tgt_ops->free_mcmd(mcmd);
5780 return;
5781 }
5782 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5783 pkt, mcmd);
5784 } else {
5785 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5786 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5787 vha->vp_idx, entry->compl_status,
5788 entry->error_subcode1,
5789 entry->error_subcode2);
5790 ha->tgt.tgt_ops->free_mcmd(mcmd);
5791 }
5792 } else {
5793 ha->tgt.tgt_ops->free_mcmd(mcmd);
5794 }
5795}
5796
2d70c103
NB		 5797/* ha->hardware_lock supposed to be held on entry */
5798/* called via callback from qla2xxx */
82de802a
QT		 5799static void qlt_response_pkt(struct scsi_qla_host *vha,
5800 struct rsp_que *rsp, response_t *pkt)
2d70c103 5801{
0e8cd71c 5802 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5803
5804 if (unlikely(tgt == NULL)) {
5805 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5806 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5807 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5808 return;
5809 }
5810
2d70c103
NB		 5811 /*
5812 * In tgt_stop mode we also should allow all requests to pass.
5813 * Otherwise, some commands can stuck.
5814 */
5815
2d70c103 5816 switch (pkt->entry_type) {
f83adb61 5817 case CTIO_CRC2:
2d70c103
NB		 5818 case CTIO_TYPE7:
5819 {
5820 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
bd432bb5 5821
82de802a 5822 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5823 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5824 entry);
5825 break;
5826 }
5827
5828 case ACCEPT_TGT_IO_TYPE:
5829 {
5830 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5831 int rc;
bd432bb5 5832
2d70c103 5833 if (atio->u.isp2x.status !=
ad950360 5834 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5835 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5836 "qla_target(%d): ATIO with error "
5837 "status %x received\n", vha->vp_idx,
5838 le16_to_cpu(atio->u.isp2x.status));
5839 break;
5840 }
2d70c103 5841
82de802a 5842 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5843 if (rc != 0)
33e79977 5844 return;
33e79977 5845
2d70c103
NB		 5846 rc = qlt_handle_cmd_for_atio(vha, atio);
5847 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5848 switch (rc) {
5849 case -ENODEV:
5850 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5851 "qla_target: Unable to send command to target\n");
5852 break;
5853 case -EBADF:
5854 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5855 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5856 qlt_send_term_exchange(rsp->qpair, NULL,
5857 atio, 1, 0);
5858 break;
5859 case -EBUSY:
5860 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5861 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5862 vha->vp_idx);
5863 qlt_send_busy(rsp->qpair, atio,
5864 tc_sam_status);
5865 break;
5866 default:
5867 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5868 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5869 vha->vp_idx);
5870 qlt_send_busy(rsp->qpair, atio,
5871 qla_sam_status);
5872 break;
2d70c103
NB		 5873 }
5874 }
5875 }
5876 break;
5877
5878 case CONTINUE_TGT_IO_TYPE:
5879 {
5880 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
bd432bb5 5881
82de802a 5882 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5883 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5884 entry);
5885 break;
5886 }
5887
5888 case CTIO_A64_TYPE:
5889 {
5890 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
bd432bb5 5891
82de802a 5892 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5893 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5894 entry);
5895 break;
5896 }
5897
5898 case IMMED_NOTIFY_TYPE:
5899 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5900 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5901 break;
5902
5903 case NOTIFY_ACK_TYPE:
5904 if (tgt->notify_ack_expected > 0) {
5905 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
bd432bb5 5906
2d70c103
NB		 5907 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5908 "NOTIFY_ACK seq %08x status %x\n",
5909 le16_to_cpu(entry->u.isp2x.seq_id),
5910 le16_to_cpu(entry->u.isp2x.status));
5911 tgt->notify_ack_expected--;
5912 if (entry->u.isp2x.status !=
ad950360 5913 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5914 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5915 "qla_target(%d): NOTIFY_ACK "
5916 "failed %x\n", vha->vp_idx,
5917 le16_to_cpu(entry->u.isp2x.status));
5918 }
5919 } else {
5920 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5921 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5922 vha->vp_idx);
5923 }
5924 break;
5925
5926 case ABTS_RECV_24XX:
5927 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5928 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5929 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5930 break;
5931
5932 case ABTS_RESP_24XX:
5933 if (tgt->abts_resp_expected > 0) {
6b0431d6 5934 qlt_handle_abts_completion(vha, rsp, pkt);
2d70c103
NB		 5935 } else {
5936 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5937 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5938 "received\n", vha->vp_idx);
5939 }
5940 break;
5941
5942 default:
5943 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5944 "qla_target(%d): Received unknown response pkt "
5945 "type %x\n", vha->vp_idx, pkt->entry_type);
5946 break;
5947 }
5948
2d70c103
NB		 5949}
5950
5951/*
5952 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5953 */
5954void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5955 uint16_t *mailbox)
5956{
5957 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5958 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5959 int login_code;
2d70c103 5960
3a33dc95 5961 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5962 return;
5963
2d70c103
NB		 5964 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5965 IS_QLA2100(ha))
5966 return;
5967 /*
5968 * In tgt_stop mode we also should allow all requests to pass.
5969 * Otherwise, some commands can stuck.
5970 */
5971
2d70c103
NB		 5972
5973 switch (code) {
5974 case MBA_RESET: /* Reset */
5975 case MBA_SYSTEM_ERR: /* System Error */
5976 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5977 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5979 "qla_target(%d): System error async event %#x "
6efb3c0a 5980 "occurred", vha->vp_idx, code);
2d70c103
NB		 5981 break;
5982 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5983 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5984 break;
5985
5986 case MBA_LOOP_UP:
5987 {
5988 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5989 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19
AC		 5990 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
5991 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
5992 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103 5993 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5994 qlt_send_notify_ack(ha->base_qpair,
5995 (void *)&tgt->link_reinit_iocb,
2d70c103
NB		 5996 0, 0, 0, 0, 0, 0);
5997 tgt->link_reinit_iocb_pending = 0;
5998 }
5999 break;
6000 }
6001
6002 case MBA_LIP_OCCURRED:
6003 case MBA_LOOP_DOWN:
6004 case MBA_LIP_RESET:
6005 case MBA_RSCN_UPDATE:
6006 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 6007 "qla_target(%d): Async event %#x occurred "
4f1d0f19
AC		 6008 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6009 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6010 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
2d70c103
NB		 6011 break;
6012
ead03855 6013 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 6014 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
6015 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
6016 vha->vp_idx,
6017 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6018 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
ead03855
QT		 6019
6020 if (le16_to_cpu(mailbox[3]) == 1) {
6021 /* exchange starvation. */
6022 vha->hw->exch_starvation++;
6023 if (vha->hw->exch_starvation > 5) {
83548fe2 6024 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 6025 "Exchange starvation-. Resetting RISC\n");
6026
6027 vha->hw->exch_starvation = 0;
6028 if (IS_P3P_TYPE(vha->hw))
6029 set_bit(FCOE_CTX_RESET_NEEDED,
6030 &vha->dpc_flags);
6031 else
6032 set_bit(ISP_ABORT_NEEDED,
6033 &vha->dpc_flags);
6034 qla2xxx_wake_dpc(vha);
6035 }
6036 }
6037 break;
6038
2d70c103
NB		 6039 case MBA_PORT_UPDATE:
6040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
6041 "qla_target(%d): Port update async event %#x "
6efb3c0a 6042 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19
AC		 6043 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
6044 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
6045 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
6046
6047 login_code = le16_to_cpu(mailbox[2]);
ead03855 6048 if (login_code == 0x4) {
2d70c103
NB		 6049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
6050 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 6051 vha->hw->exch_starvation = 0;
6052 } else if (login_code == 0x7)
2d70c103
NB		 6053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
6054 "Async MB 2: Port Logged Out\n");
6055 break;
2d70c103 6056 default:
2d70c103
NB		 6057 break;
6058 }
6059
2d70c103
NB		 6060}
6061
6062static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6063 uint16_t loop_id)
6064{
726b8548 6065 fc_port_t *fcport, *tfcp, *del;
2d70c103 6066 int rc;
726b8548
QT		 6067 unsigned long flags;
6068 u8 newfcport = 0;
2d70c103 6069
063b36d6 6070 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 6071 if (!fcport) {
6072 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6073 "qla_target(%d): Allocation of tmp FC port failed",
6074 vha->vp_idx);
6075 return NULL;
6076 }
6077
2d70c103
NB		 6078 fcport->loop_id = loop_id;
6079
15f30a57 6080 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 6081 if (rc != QLA_SUCCESS) {
6082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6083 "qla_target(%d): Failed to retrieve fcport "
6084 "information -- get_port_database() returned %x "
6085 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6086 kfree(fcport);
6087 return NULL;
6088 }
6089
726b8548
QT		 6090 del = NULL;
6091 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6092 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6093
6094 if (tfcp) {
6095 tfcp->d_id = fcport->d_id;
6096 tfcp->port_type = fcport->port_type;
6097 tfcp->supported_classes = fcport->supported_classes;
6098 tfcp->flags |= fcport->flags;
76f9a2dd 6099 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 6100
6101 del = fcport;
6102 fcport = tfcp;
6103 } else {
6104 if (vha->hw->current_topology == ISP_CFG_F)
6105 fcport->flags |= FCF_FABRIC_DEVICE;
6106
6107 list_add_tail(&fcport->list, &vha->vp_fcports);
6108 if (!IS_SW_RESV_ADDR(fcport->d_id))
6109 vha->fcport_count++;
6110 fcport->login_gen++;
6111 fcport->disc_state = DSC_LOGIN_COMPLETE;
6112 fcport->login_succ = 1;
6113 newfcport = 1;
6114 }
6115
6116 fcport->deleted = 0;
6117 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6118
6119 switch (vha->host->active_mode) {
6120 case MODE_INITIATOR:
6121 case MODE_DUAL:
6122 if (newfcport) {
6123 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
cd4ed6b4 6124 qla24xx_sched_upd_fcport(fcport);
726b8548 6125 } else {
83548fe2 6126 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 6127 "%s %d %8phC post gpsc fcp_cnt %d\n",
6128 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6129 qla24xx_post_gpsc_work(vha, fcport);
6130 }
6131 }
6132 break;
6133
6134 case MODE_TARGET:
6135 default:
6136 break;
6137 }
6138 if (del)
6139 qla2x00_free_fcport(del);
6140
2d70c103
NB		 6141 return fcport;
6142}
6143
6144/* Must be called under tgt_mutex */
5d964837 6145static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
2d70c103
NB		 6146 uint8_t *s_id)
6147{
5d964837 6148 struct fc_port *sess = NULL;
2d70c103
NB		 6149 fc_port_t *fcport = NULL;
6150 int rc, global_resets;
6151 uint16_t loop_id = 0;
6152
726b8548
QT		 6153 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) {
6154 /*
6155 * This is Domain Controller, so it should be
6156 * OK to drop SCSI commands from it.
6157 */
6158 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6159 "Unable to find initiator with S_ID %x:%x:%x",
6160 s_id[0], s_id[1], s_id[2]);
6161 return NULL;
6162 }
6163
71cdc079
AP		 6164 mutex_lock(&vha->vha_tgt.tgt_mutex);
6165
2d70c103 6166retry:
0e8cd71c
SK		 6167 global_resets =
6168 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 6169
6170 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6171 if (rc != 0) {
71cdc079
AP		 6172 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6173
726b8548
QT		 6174 ql_log(ql_log_info, vha, 0xf071,
6175 "qla_target(%d): Unable to find "
6176 "initiator with S_ID %x:%x:%x",
6177 vha->vp_idx, s_id[0], s_id[1],
6178 s_id[2]);
71cdc079
AP		 6179
6180 if (rc == -ENOENT) {
6181 qlt_port_logo_t logo;
bd432bb5 6182
71cdc079
AP		 6183 sid_to_portid(s_id, &logo.id);
6184 logo.cmd_count = 1;
6185 qlt_send_first_logo(vha, &logo);
6186 }
6187
2d70c103
NB		 6188 return NULL;
6189 }
6190
6191 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 6192 if (!fcport) {
6193 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 6194 return NULL;
71cdc079 6195 }
2d70c103
NB		 6196
6197 if (global_resets !=
0e8cd71c 6198 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 6199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6200 "qla_target(%d): global reset during session discovery "
6201 "(counter was %d, new %d), retrying", vha->vp_idx,
6202 global_resets,
0e8cd71c
SK		 6203 atomic_read(&vha->vha_tgt.
6204 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 6205 goto retry;
6206 }
6207
6208 sess = qlt_create_sess(vha, fcport, true);
6209
71cdc079
AP		 6210 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6211
2d70c103
NB		 6212 return sess;
6213}
6214
6215static void qlt_abort_work(struct qla_tgt *tgt,
6216 struct qla_tgt_sess_work_param *prm)
6217{
6218 struct scsi_qla_host *vha = tgt->vha;
6219 struct qla_hw_data *ha = vha->hw;
5d964837 6220 struct fc_port *sess = NULL;
7560151b 6221 unsigned long flags = 0, flags2 = 0;
2d70c103
NB		 6222 uint32_t be_s_id;
6223 uint8_t s_id[3];
6224 int rc;
6225
7560151b 6226 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 6227
6228 if (tgt->tgt_stop)
7560151b 6229 goto out_term2;
2d70c103
NB		 6230
6231 s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
6232 s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
6233 s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
6234
6235 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
6236 (unsigned char *)&be_s_id);
6237 if (!sess) {
7560151b 6238 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 6239
2d70c103
NB		 6240 sess = qlt_make_local_sess(vha, s_id);
6241 /* sess has got an extra creation ref */
2d70c103 6242
7560151b 6243 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 6244 if (!sess)
7560151b 6245 goto out_term2;
2d70c103 6246 } else {
726b8548 6247 if (sess->deleted) {
e52a8b45 6248 sess = NULL;
7560151b 6249 goto out_term2;
e52a8b45
AP		 6250 }
6251
726b8548 6252 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6253 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 6254 "%s: kref_get fail %8phC \n",
6255 __func__, sess->port_name);
6256 sess = NULL;
6257 goto out_term2;
6258 }
2d70c103
NB		 6259 }
6260
2d70c103 6261 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 6262 ha->tgt.tgt_ops->put_sess(sess);
6263 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6264
2d70c103
NB		 6265 if (rc != 0)
6266 goto out_term;
2d70c103
NB		 6267 return;
6268
7560151b 6269out_term2:
f159b3c7
QT		 6270 if (sess)
6271 ha->tgt.tgt_ops->put_sess(sess);
6272 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
7560151b 6273
2d70c103 6274out_term:
f159b3c7 6275 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6276 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6277 FCP_TMF_REJECTED, false);
7560151b 6278 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6279}
6280
6281static void qlt_tmr_work(struct qla_tgt *tgt,
6282 struct qla_tgt_sess_work_param *prm)
6283{
6284 struct atio_from_isp *a = &prm->tm_iocb2;
6285 struct scsi_qla_host *vha = tgt->vha;
6286 struct qla_hw_data *ha = vha->hw;
bb6abdd4 6287 struct fc_port *sess;
2d70c103
NB		 6288 unsigned long flags;
6289 uint8_t *s_id = NULL; /* to hide compiler warnings */
6290 int rc;
f775bd14 6291 u64 unpacked_lun;
52c82823 6292 int fn;
2d70c103
NB		 6293 void *iocb;
6294
7560151b 6295 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6296
6297 if (tgt->tgt_stop)
f159b3c7 6298 goto out_term2;
2d70c103
NB		 6299
6300 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6301 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6302 if (!sess) {
7560151b 6303 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6304
2d70c103
NB		 6305 sess = qlt_make_local_sess(vha, s_id);
6306 /* sess has got an extra creation ref */
2d70c103 6307
7560151b 6308 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6309 if (!sess)
f159b3c7 6310 goto out_term2;
2d70c103 6311 } else {
726b8548 6312 if (sess->deleted) {
f159b3c7 6313 goto out_term2;
e52a8b45
AP		 6314 }
6315
726b8548 6316 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6317 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020,
726b8548
QT		 6318 "%s: kref_get fail %8phC\n",
6319 __func__, sess->port_name);
f159b3c7 6320 goto out_term2;
726b8548 6321 }
2d70c103
NB		 6322 }
6323
6324 iocb = a;
2d70c103 6325 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6326 unpacked_lun =
6327 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6328
6329 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
5d964837 6330 ha->tgt.tgt_ops->put_sess(sess);
7560151b 6331 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7
QT		 6332
6333 if (rc != 0)
6334 goto out_term;
2d70c103
NB		 6335 return;
6336
f159b3c7 6337out_term2:
f159b3c7 6338 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6339out_term:
82de802a 6340 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6341}
6342
6343static void qlt_sess_work_fn(struct work_struct *work)
6344{
6345 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6346 struct scsi_qla_host *vha = tgt->vha;
6347 unsigned long flags;
6348
6349 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6350
6351 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6352 while (!list_empty(&tgt->sess_works_list)) {
6353 struct qla_tgt_sess_work_param *prm = list_entry(
6354 tgt->sess_works_list.next, typeof(*prm),
6355 sess_works_list_entry);
6356
6357 /*
6358 * This work can be scheduled on several CPUs at time, so we
6359 * must delete the entry to eliminate double processing
6360 */
6361 list_del(&prm->sess_works_list_entry);
6362
6363 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6364
6365 switch (prm->type) {
6366 case QLA_TGT_SESS_WORK_ABORT:
6367 qlt_abort_work(tgt, prm);
6368 break;
6369 case QLA_TGT_SESS_WORK_TM:
6370 qlt_tmr_work(tgt, prm);
6371 break;
6372 default:
6373 BUG_ON(1);
6374 break;
6375 }
6376
6377 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6378
6379 kfree(prm);
6380 }
6381 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6382}
6383
6384/* Must be called under tgt_host_action_mutex */
6385int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6386{
6387 struct qla_tgt *tgt;
e326d22a
QT		 6388 int rc, i;
6389 struct qla_qpair_hint *h;
2d70c103
NB		 6390
6391 if (!QLA_TGT_MODE_ENABLED())
6392 return 0;
6393
33c36c0a
AE		 6394 if (!IS_TGT_MODE_CAPABLE(ha)) {
6395 ql_log(ql_log_warn, base_vha, 0xe070,
6396 "This adapter does not support target mode.\n");
6397 return 0;
6398 }
6399
2d70c103 6400 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6401 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6402
0e8cd71c 6403 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6404
6405 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6406 if (!tgt) {
6407 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6408 "Unable to allocate struct qla_tgt\n");
6409 return -ENOMEM;
6410 }
6411
6396bb22
KC		 6412 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6413 sizeof(struct qla_qpair_hint),
6414 GFP_KERNEL);
e326d22a
QT		 6415 if (!tgt->qphints) {
6416 kfree(tgt);
6417 ql_log(ql_log_warn, base_vha, 0x0197,
6418 "Unable to allocate qpair hints.\n");
6419 return -ENOMEM;
6420 }
6421
2d70c103
NB		 6422 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6423 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6424
e326d22a
QT		 6425 rc = btree_init64(&tgt->lun_qpair_map);
6426 if (rc) {
6427 kfree(tgt->qphints);
6428 kfree(tgt);
6429 ql_log(ql_log_info, base_vha, 0x0198,
6430 "Unable to initialize lun_qpair_map btree\n");
6431 return -EIO;
6432 }
6433 h = &tgt->qphints[0];
6434 h->qpair = ha->base_qpair;
6435 INIT_LIST_HEAD(&h->hint_elem);
6436 h->cpuid = ha->base_qpair->cpuid;
6437 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6438
6439 for (i = 0; i < ha->max_qpairs; i++) {
6440 unsigned long flags;
6441
6442 struct qla_qpair *qpair = ha->queue_pair_map[i];
bd432bb5 6443
e326d22a
QT		 6444 h = &tgt->qphints[i + 1];
6445 INIT_LIST_HEAD(&h->hint_elem);
6446 if (qpair) {
6447 h->qpair = qpair;
6448 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6449 list_add_tail(&h->hint_elem, &qpair->hints_list);
6450 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6451 h->cpuid = qpair->cpuid;
6452 }
6453 }
6454
2d70c103
NB		 6455 tgt->ha = ha;
6456 tgt->vha = base_vha;
6457 init_waitqueue_head(&tgt->waitQ);
2d70c103 6458 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6459 spin_lock_init(&tgt->sess_work_lock);
6460 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6461 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6462 atomic_set(&tgt->tgt_global_resets_count, 0);
6463
0e8cd71c 6464 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6465
6466 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6467 "qla_target(%d): using 64 Bit PCI addressing",
6468 base_vha->vp_idx);
2d70c103
NB		 6469 /* 3 is reserved */
6470 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6471
6472 mutex_lock(&qla_tgt_mutex);
6473 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6474 mutex_unlock(&qla_tgt_mutex);
6475
f1443eeb
QT		 6476 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6477 ha->tgt.tgt_ops->add_target(base_vha);
6478
2d70c103
NB		 6479 return 0;
6480}
6481
6482/* Must be called under tgt_host_action_mutex */
6483int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6484{
0e8cd71c 6485 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6486 return 0;
6487
ddb95145
NB		 6488 if (vha->fc_vport) {
6489 qlt_release(vha->vha_tgt.qla_tgt);
6490 return 0;
6491 }
33e79977
QT		 6492
6493 /* free left over qfull cmds */
6494 qlt_init_term_exchange(vha);
6495
2d70c103
NB		 6496 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6497 vha->host_no, ha);
0e8cd71c 6498 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6499
6500 return 0;
6501}
6502
482c9dc7
QT		 6503void qlt_remove_target_resources(struct qla_hw_data *ha)
6504{
6505 struct scsi_qla_host *node;
6506 u32 key = 0;
6507
6508 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6509 btree_remove32(&ha->tgt.host_map, key);
6510
6511 btree_destroy32(&ha->tgt.host_map);
6512}
6513
2d70c103
NB		 6514static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6515 unsigned char *b)
6516{
6517 int i;
6518
6519 pr_debug("qla2xxx HW vha->node_name: ");
6520 for (i = 0; i < WWN_SIZE; i++)
6521 pr_debug("%02x ", vha->node_name[i]);
6522 pr_debug("\n");
6523 pr_debug("qla2xxx HW vha->port_name: ");
6524 for (i = 0; i < WWN_SIZE; i++)
6525 pr_debug("%02x ", vha->port_name[i]);
6526 pr_debug("\n");
6527
6528 pr_debug("qla2xxx passed configfs WWPN: ");
6529 put_unaligned_be64(wwpn, b);
6530 for (i = 0; i < WWN_SIZE; i++)
6531 pr_debug("%02x ", b[i]);
6532 pr_debug("\n");
6533}
6534
6535/**
6536 * qla_tgt_lport_register - register lport with external module
6537 *
2d70c103 6538 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
807eb907
BVA		 6539 * @phys_wwpn: physical port WWPN
6540 * @npiv_wwpn: NPIV WWPN
6541 * @npiv_wwnn: NPIV WWNN
2db6228d 6542 * @callback: lport initialization callback for tcm_qla2xxx code
2d70c103 6543 */
49a47f2c
NB		 6544int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6545 u64 npiv_wwpn, u64 npiv_wwnn,
6546 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6547{
6548 struct qla_tgt *tgt;
6549 struct scsi_qla_host *vha;
6550 struct qla_hw_data *ha;
6551 struct Scsi_Host *host;
6552 unsigned long flags;
6553 int rc;
6554 u8 b[WWN_SIZE];
6555
6556 mutex_lock(&qla_tgt_mutex);
6557 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6558 vha = tgt->vha;
6559 ha = vha->hw;
6560
6561 host = vha->host;
6562 if (!host)
6563 continue;
6564
2d70c103
NB		 6565 if (!(host->hostt->supported_mode & MODE_TARGET))
6566 continue;
6567
0645cb83
QT		 6568 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6569 continue;
6570
2d70c103 6571 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6572 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6573 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6574 host->host_no);
6575 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6576 continue;
6577 }
ddb95145
NB		 6578 if (tgt->tgt_stop) {
6579 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6580 host->host_no);
6581 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6582 continue;
6583 }
2d70c103
NB		 6584 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6585
6586 if (!scsi_host_get(host)) {
6587 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6588 "Unable to scsi_host_get() for"
6589 " qla2xxx scsi_host\n");
6590 continue;
6591 }
49a47f2c 6592 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6593
6594 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6595 scsi_host_put(host);
6596 continue;
6597 }
49a47f2c
NB		 6598 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6599 if (rc != 0)
6600 scsi_host_put(host);
6601
ddb95145 6602 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6603 return rc;
6604 }
6605 mutex_unlock(&qla_tgt_mutex);
6606
6607 return -ENODEV;
6608}
6609EXPORT_SYMBOL(qlt_lport_register);
6610
6611/**
6612 * qla_tgt_lport_deregister - Degister lport
6613 *
6614 * @vha: Registered scsi_qla_host pointer
6615 */
6616void qlt_lport_deregister(struct scsi_qla_host *vha)
6617{
6618 struct qla_hw_data *ha = vha->hw;
6619 struct Scsi_Host *sh = vha->host;
6620 /*
6621 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6622 */
0e8cd71c 6623 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6624 ha->tgt.tgt_ops = NULL;
6625 /*
6626 * Release the Scsi_Host reference for the underlying qla2xxx host
6627 */
6628 scsi_host_put(sh);
6629}
6630EXPORT_SYMBOL(qlt_lport_deregister);
6631
6632/* Must be called under HW lock */
0645cb83 6633void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6634{
0645cb83 6635 switch (vha->qlini_mode) {
2d70c103
NB		 6636 case QLA2XXX_INI_MODE_DISABLED:
6637 case QLA2XXX_INI_MODE_EXCLUSIVE:
6638 vha->host->active_mode = MODE_TARGET;
6639 break;
6640 case QLA2XXX_INI_MODE_ENABLED:
0645cb83 6641 vha->host->active_mode = MODE_INITIATOR;
ead03855
QT		 6642 break;
6643 case QLA2XXX_INI_MODE_DUAL:
6644 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6645 break;
6646 default:
6647 break;
6648 }
2d70c103
NB		 6649}
6650
6651/* Must be called under HW lock */
55a9066f 6652static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6653{
0645cb83 6654 switch (vha->qlini_mode) {
2d70c103
NB		 6655 case QLA2XXX_INI_MODE_DISABLED:
6656 vha->host->active_mode = MODE_UNKNOWN;
6657 break;
6658 case QLA2XXX_INI_MODE_EXCLUSIVE:
6659 vha->host->active_mode = MODE_INITIATOR;
6660 break;
6661 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6662 case QLA2XXX_INI_MODE_DUAL:
6663 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6664 break;
6665 default:
6666 break;
6667 }
2d70c103
NB		 6668}
6669
6670/*
6671 * qla_tgt_enable_vha - NO LOCK HELD
6672 *
6673 * host_reset, bring up w/ Target Mode Enabled
6674 */
6675void
6676qlt_enable_vha(struct scsi_qla_host *vha)
6677{
6678 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6679 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6680 unsigned long flags;
0e8cd71c 6681 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6682
6683 if (!tgt) {
6684 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6685 "Unable to locate qla_tgt pointer from"
6686 " struct qla_hw_data\n");
6687 dump_stack();
6688 return;
6689 }
0645cb83
QT		 6690 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6691 return;
2d70c103
NB		 6692
6693 spin_lock_irqsave(&ha->hardware_lock, flags);
6694 tgt->tgt_stopped = 0;
6695 qlt_set_mode(vha);
6696 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6697
b6faaaf7
QT		 6698 mutex_lock(&ha->optrom_mutex);
6699 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6700 "%s.\n", __func__);
0e8cd71c
SK		 6701 if (vha->vp_idx) {
6702 qla24xx_disable_vp(vha);
6703 qla24xx_enable_vp(vha);
6704 } else {
6705 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6706 qla2xxx_wake_dpc(base_vha);
6707 qla2x00_wait_for_hba_online(base_vha);
6708 }
b6faaaf7 6709 mutex_unlock(&ha->optrom_mutex);
2d70c103
NB		 6710}
6711EXPORT_SYMBOL(qlt_enable_vha);
6712
6713/*
6714 * qla_tgt_disable_vha - NO LOCK HELD
6715 *
6716 * Disable Target Mode and reset the adapter
6717 */
55a9066f 6718static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6719{
6720 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6721 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6722 unsigned long flags;
6723
6724 if (!tgt) {
6725 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6726 "Unable to locate qla_tgt pointer from"
6727 " struct qla_hw_data\n");
6728 dump_stack();
6729 return;
6730 }
6731
6732 spin_lock_irqsave(&ha->hardware_lock, flags);
6733 qlt_clear_mode(vha);
6734 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6735
6736 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6737 qla2xxx_wake_dpc(vha);
6738 qla2x00_wait_for_hba_online(vha);
6739}
6740
6741/*
6742 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6743 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6744 * members.
6745 */
6746void
6747qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6748{
0e8cd71c
SK		 6749 vha->vha_tgt.qla_tgt = NULL;
6750
6751 mutex_init(&vha->vha_tgt.tgt_mutex);
6752 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6753
6754 qlt_clear_mode(vha);
6755
6756 /*
6757 * NOTE: Currently the value is kept the same for <24xx and
6758 * >=24xx ISPs. If it is necessary to change it,
6759 * the check should be added for specific ISPs,
6760 * assigning the value appropriately.
6761 */
6762 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6763
6764 qlt_add_target(ha, vha);
2d70c103
NB		 6765}
6766
e374f9f5
QT		 6767u8
6768qlt_rff_id(struct scsi_qla_host *vha)
2d70c103 6769{
e374f9f5 6770 u8 fc4_feature = 0;
2d70c103
NB		 6771 /*
6772 * FC-4 Feature bit 0 indicates target functionality to the name server.
6773 */
6774 if (qla_tgt_mode_enabled(vha)) {
e374f9f5 6775 fc4_feature = BIT_0;
2d70c103 6776 } else if (qla_ini_mode_enabled(vha)) {
e374f9f5 6777 fc4_feature = BIT_1;
726b8548 6778 } else if (qla_dual_mode_enabled(vha))
e374f9f5
QT		 6779 fc4_feature = BIT_0 | BIT_1;
6780
6781 return fc4_feature;
2d70c103
NB		 6782}
6783
6784/*
6785 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6786 * @ha: HA context
6787 *
6788 * Beginning of ATIO ring has initialization control block already built
6789 * by nvram config routine.
6790 *
6791 * Returns 0 on success.
6792 */
6793void
6794qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6795{
6796 struct qla_hw_data *ha = vha->hw;
6797 uint16_t cnt;
6798 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6799
ead03855 6800 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6801 return;
6802
6803 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
6804 pkt->u.raw.signature = ATIO_PROCESSED;
6805 pkt++;
6806 }
6807
6808}
6809
6810/*
6811 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6812 * @ha: SCSI driver HA context
6813 */
6814void
2f424b9b 6815qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6816{
6817 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6818 struct atio_from_isp *pkt;
6819 int cnt, i;
6820
ec7193e2 6821 if (!ha->flags.fw_started)
2d70c103
NB		 6822 return;
6823
5f35509d
QT		 6824 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6825 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6826 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6827 cnt = pkt->u.raw.entry_count;
6828
5f35509d
QT		 6829 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6830 /*
6831 * This packet is corrupted. The header + payload
6832 * can not be trusted. There is no point in passing
6833 * it further up.
6834 */
83548fe2 6835 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d
QT		 6836 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
6837 pkt->u.isp24.fcp_hdr.s_id,
6838 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
6839 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt);
6840
6841 adjust_corrupted_atio(pkt);
82de802a
QT		 6842 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6843 ha_locked, 0);
5f35509d
QT		 6844 } else {
6845 qlt_24xx_atio_pkt_all_vps(vha,
6846 (struct atio_from_isp *)pkt, ha_locked);
6847 }
2d70c103
NB		 6848
6849 for (i = 0; i < cnt; i++) {
6850 ha->tgt.atio_ring_index++;
6851 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6852 ha->tgt.atio_ring_index = 0;
6853 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6854 } else
6855 ha->tgt.atio_ring_ptr++;
6856
6857 pkt->u.raw.signature = ATIO_PROCESSED;
6858 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6859 }
6860 wmb();
6861 }
6862
6863 /* Adjust ring index */
aa230bc5 6864 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6865}
6866
6867void
aa230bc5 6868qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6869{
6870 struct qla_hw_data *ha = vha->hw;
d2b292c3
QT		 6871 struct qla_msix_entry *msix = &ha->msix_entries[2];
6872 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6873
aa230bc5
AE		 6874 if (!QLA_TGT_MODE_ENABLED())
6875 return;
2d70c103 6876
aa230bc5
AE		 6877 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0);
6878 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0);
6879 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha));
6880
d2b292c3 6881 if (ha->flags.msix_enabled) {
ecc89f25 6882 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
d2b292c3
QT		 6883 if (IS_QLA2071(ha)) {
6884 /* 4 ports Baker: Enable Interrupt Handshake */
6885 icb->msix_atio = 0;
6886 icb->firmware_options_2 |= BIT_26;
6887 } else {
6888 icb->msix_atio = cpu_to_le16(msix->entry);
6889 icb->firmware_options_2 &= ~BIT_26;
6890 }
6891 ql_dbg(ql_dbg_init, vha, 0xf072,
6892 "Registering ICB vector 0x%x for atio que.\n",
6893 msix->entry);
6894 }
6895 } else {
6896 /* INTx|MSI */
ecc89f25 6897 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
d2b292c3
QT		 6898 icb->msix_atio = 0;
6899 icb->firmware_options_2 |= BIT_26;
6900 ql_dbg(ql_dbg_init, vha, 0xf072,
6901 "%s: Use INTx for ATIOQ.\n", __func__);
6902 }
2d70c103
NB		 6903 }
6904}
6905
6906void
6907qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6908{
6909 struct qla_hw_data *ha = vha->hw;
9cd883f0 6910 u32 tmp;
99e1b683
QT		 6911
6912 if (!QLA_TGT_MODE_ENABLED())
6913 return;
2d70c103 6914
ead03855 6915 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6916 if (!ha->tgt.saved_set) {
6917 /* We save only once */
6918 ha->tgt.saved_exchange_count = nv->exchange_count;
6919 ha->tgt.saved_firmware_options_1 =
6920 nv->firmware_options_1;
6921 ha->tgt.saved_firmware_options_2 =
6922 nv->firmware_options_2;
6923 ha->tgt.saved_firmware_options_3 =
6924 nv->firmware_options_3;
6925 ha->tgt.saved_set = 1;
6926 }
6927
99e1b683 6928 if (qla_tgt_mode_enabled(vha))
ead03855 6929 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683 6930 else /* dual */
0645cb83 6931 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
2d70c103
NB		 6932
6933 /* Enable target mode */
ad950360 6934 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6935
6936 /* Disable ini mode, if requested */
726b8548 6937 if (qla_tgt_mode_enabled(vha))
ad950360 6938 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6939
6940 /* Disable Full Login after LIP */
ad950360 6941 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6942 /* Enable initial LIP */
ad950360 6943 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6944 if (ql2xtgt_tape_enable)
6945 /* Enable FC Tape support */
6946 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6947 else
6948 /* Disable FC Tape support */
6949 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6950
2d70c103 6951 /* Disable Full Login after LIP */
ad950360 6952 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6953
6954 /*
6955 * clear BIT 15 explicitly as we have seen at least
6956 * a couple of instances where this was set and this
6957 * was causing the firmware to not be initialized.
6958 */
6959 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6960 /* Enable target PRLI control */
ad950360 6961 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6962
6963 if (IS_QLA25XX(ha)) {
6964 /* Change Loop-prefer to Pt-Pt */
6965 tmp = ~(BIT_4|BIT_5|BIT_6);
6966 nv->firmware_options_2 &= cpu_to_le32(tmp);
6967 tmp = P2P << 4;
6968 nv->firmware_options_2 |= cpu_to_le32(tmp);
6969 }
2d70c103
NB		 6970 } else {
6971 if (ha->tgt.saved_set) {
6972 nv->exchange_count = ha->tgt.saved_exchange_count;
6973 nv->firmware_options_1 =
6974 ha->tgt.saved_firmware_options_1;
6975 nv->firmware_options_2 =
6976 ha->tgt.saved_firmware_options_2;
6977 nv->firmware_options_3 =
6978 ha->tgt.saved_firmware_options_3;
6979 }
6980 return;
6981 }
6982
7c3f8fd1 6983 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6984 if (vha->flags.init_done)
6985 fc_host_supported_classes(vha->host) =
6986 FC_COS_CLASS2 | FC_COS_CLASS3;
6987
ad950360 6988 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6989 } else {
6990 if (vha->flags.init_done)
6991 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6992
ad950360 6993 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6994 }
6995}
6996
6997void
6998qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6999 struct init_cb_24xx *icb)
7000{
7001 struct qla_hw_data *ha = vha->hw;
7002
481ce733
QT		 7003 if (!QLA_TGT_MODE_ENABLED())
7004 return;
7005
2d70c103
NB		 7006 if (ha->tgt.node_name_set) {
7007 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 7008 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103
NB		 7009 }
7010}
7011
aa230bc5
AE		 7012void
7013qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
7014{
7015 struct qla_hw_data *ha = vha->hw;
9cd883f0 7016 u32 tmp;
aa230bc5
AE		 7017
7018 if (!QLA_TGT_MODE_ENABLED())
7019 return;
7020
ead03855 7021 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 7022 if (!ha->tgt.saved_set) {
7023 /* We save only once */
7024 ha->tgt.saved_exchange_count = nv->exchange_count;
7025 ha->tgt.saved_firmware_options_1 =
7026 nv->firmware_options_1;
7027 ha->tgt.saved_firmware_options_2 =
7028 nv->firmware_options_2;
7029 ha->tgt.saved_firmware_options_3 =
7030 nv->firmware_options_3;
7031 ha->tgt.saved_set = 1;
7032 }
7033
99e1b683 7034 if (qla_tgt_mode_enabled(vha))
ead03855 7035 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683 7036 else /* dual */
0645cb83 7037 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
aa230bc5
AE		 7038
7039 /* Enable target mode */
ad950360 7040 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 7041
7042 /* Disable ini mode, if requested */
726b8548 7043 if (qla_tgt_mode_enabled(vha))
ad950360 7044 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 7045 /* Disable Full Login after LIP */
ad950360 7046 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 7047 /* Enable initial LIP */
ad950360 7048 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 7049 /*
7050 * clear BIT 15 explicitly as we have seen at
7051 * least a couple of instances where this was set
7052 * and this was causing the firmware to not be
7053 * initialized.
7054 */
7055 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 7056 if (ql2xtgt_tape_enable)
7057 /* Enable FC tape support */
7058 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
7059 else
7060 /* Disable FC tape support */
7061 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
7062
aa230bc5 7063 /* Disable Full Login after LIP */
ad950360 7064 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 7065 /* Enable target PRLI control */
ad950360 7066 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 7067
7068 /* Change Loop-prefer to Pt-Pt */
7069 tmp = ~(BIT_4|BIT_5|BIT_6);
7070 nv->firmware_options_2 &= cpu_to_le32(tmp);
7071 tmp = P2P << 4;
7072 nv->firmware_options_2 |= cpu_to_le32(tmp);
aa230bc5
AE		 7073 } else {
7074 if (ha->tgt.saved_set) {
7075 nv->exchange_count = ha->tgt.saved_exchange_count;
7076 nv->firmware_options_1 =
7077 ha->tgt.saved_firmware_options_1;
7078 nv->firmware_options_2 =
7079 ha->tgt.saved_firmware_options_2;
7080 nv->firmware_options_3 =
7081 ha->tgt.saved_firmware_options_3;
7082 }
7083 return;
7084 }
7085
7c3f8fd1 7086 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 7087 if (vha->flags.init_done)
7088 fc_host_supported_classes(vha->host) =
7089 FC_COS_CLASS2 | FC_COS_CLASS3;
7090
ad950360 7091 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 7092 } else {
7093 if (vha->flags.init_done)
7094 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7095
ad950360 7096 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 7097 }
7098}
7099
7100void
7101qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
7102 struct init_cb_81xx *icb)
7103{
7104 struct qla_hw_data *ha = vha->hw;
7105
7106 if (!QLA_TGT_MODE_ENABLED())
7107 return;
7108
7109 if (ha->tgt.node_name_set) {
7110 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 7111 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 7112 }
7113}
7114
7115void
7116qlt_83xx_iospace_config(struct qla_hw_data *ha)
7117{
7118 if (!QLA_TGT_MODE_ENABLED())
7119 return;
7120
7121 ha->msix_count += 1; /* For ATIO Q */
7122}
7123
2d70c103
NB		 7124
7125void
7126qlt_modify_vp_config(struct scsi_qla_host *vha,
7127 struct vp_config_entry_24xx *vpmod)
7128{
ead03855
QT		 7129 /* enable target mode. Bit5 = 1 => disable */
7130 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 7131 vpmod->options_idx1 &= ~BIT_5;
726b8548 7132
ead03855 7133 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 7134 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 7135 vpmod->options_idx1 &= ~BIT_4;
7136}
7137
7138void
7139qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
7140{
482c9dc7
QT		 7141 int rc;
7142
2d70c103
NB		 7143 if (!QLA_TGT_MODE_ENABLED())
7144 return;
7145
ecc89f25
JC		 7146 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
7147 IS_QLA28XX(ha)) {
aa230bc5
AE		 7148 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
7149 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
7150 } else {
7151 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
7152 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7153 }
7154
0e8cd71c
SK		 7155 mutex_init(&base_vha->vha_tgt.tgt_mutex);
7156 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 7157
7158 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7159 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7160 qlt_unknown_atio_work_fn);
7161
2d70c103 7162 qlt_clear_mode(base_vha);
482c9dc7
QT		 7163
7164 rc = btree_init32(&ha->tgt.host_map);
7165 if (rc)
83548fe2 7166 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 7167 "Unable to initialize ha->host_map btree\n");
7168
7169 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 7170}
7171
aa230bc5
AE		 7172irqreturn_t
7173qla83xx_msix_atio_q(int irq, void *dev_id)
7174{
7175 struct rsp_que *rsp;
7176 scsi_qla_host_t *vha;
7177 struct qla_hw_data *ha;
7178 unsigned long flags;
7179
7180 rsp = (struct rsp_que *) dev_id;
7181 ha = rsp->hw;
7182 vha = pci_get_drvdata(ha->pdev);
7183
2f424b9b 7184 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 7185
2f424b9b 7186 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 7187
2f424b9b 7188 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 7189
7190 return IRQ_HANDLED;
7191}
7192
2f424b9b
QT		 7193static void
7194qlt_handle_abts_recv_work(struct work_struct *work)
7195{
7196 struct qla_tgt_sess_op *op = container_of(work,
7197 struct qla_tgt_sess_op, work);
7198 scsi_qla_host_t *vha = op->vha;
7199 struct qla_hw_data *ha = vha->hw;
7200 unsigned long flags;
7201
7c3f8fd1
QT		 7202 if (qla2x00_reset_active(vha) ||
7203 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 7204 return;
7205
7206 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7207 qlt_24xx_process_atio_queue(vha, 0);
7208 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7209
7210 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 7211 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 7212 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 7213
7214 kfree(op);
2f424b9b
QT		 7215}
7216
7217void
82de802a
QT		 7218qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7219 response_t *pkt)
2f424b9b
QT		 7220{
7221 struct qla_tgt_sess_op *op;
7222
7223 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7224
7225 if (!op) {
7226 /* do not reach for ATIO queue here. This is best effort err
7227 * recovery at this point.
7228 */
82de802a 7229 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 7230 return;
7231 }
7232
7233 memcpy(&op->atio, pkt, sizeof(*pkt));
7234 op->vha = vha;
7c3f8fd1 7235 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 7236 op->rsp = rsp;
2f424b9b
QT		 7237 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7238 queue_work(qla_tgt_wq, &op->work);
7239 return;
7240}
7241
2d70c103
NB		 7242int
7243qlt_mem_alloc(struct qla_hw_data *ha)
7244{
7245 if (!QLA_TGT_MODE_ENABLED())
7246 return 0;
7247
6396bb22
KC		 7248 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC,
7249 sizeof(struct qla_tgt_vp_map),
7250 GFP_KERNEL);
2d70c103
NB		 7251 if (!ha->tgt.tgt_vp_map)
7252 return -ENOMEM;
7253
7254 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7255 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7256 &ha->tgt.atio_dma, GFP_KERNEL);
7257 if (!ha->tgt.atio_ring) {
7258 kfree(ha->tgt.tgt_vp_map);
7259 return -ENOMEM;
7260 }
7261 return 0;
7262}
7263
7264void
7265qlt_mem_free(struct qla_hw_data *ha)
7266{
7267 if (!QLA_TGT_MODE_ENABLED())
7268 return;
7269
7270 if (ha->tgt.atio_ring) {
7271 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7272 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7273 ha->tgt.atio_dma);
7274 }
5365bf99
BVA		 7275 ha->tgt.atio_ring = NULL;
7276 ha->tgt.atio_dma = 0;
2d70c103 7277 kfree(ha->tgt.tgt_vp_map);
5365bf99 7278 ha->tgt.tgt_vp_map = NULL;
2d70c103
NB		 7279}
7280
7281/* vport_slock to be held by the caller */
7282void
7283qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7284{
482c9dc7
QT		 7285 void *slot;
7286 u32 key;
7287 int rc;
7288
2d70c103
NB		 7289 if (!QLA_TGT_MODE_ENABLED())
7290 return;
7291
482c9dc7
QT		 7292 key = vha->d_id.b24;
7293
2d70c103
NB		 7294 switch (cmd) {
7295 case SET_VP_IDX:
7296 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7297 break;
7298 case SET_AL_PA:
482c9dc7
QT		 7299 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7300 if (!slot) {
83548fe2 7301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7302 "Save vha in host_map %p %06x\n", vha, key);
7303 rc = btree_insert32(&vha->hw->tgt.host_map,
7304 key, vha, GFP_ATOMIC);
7305 if (rc)
83548fe2 7306 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7307 "Unable to insert s_id into host_map: %06x\n",
7308 key);
7309 return;
7310 }
83548fe2
QT		 7311 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7312 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7313 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7314 break;
7315 case RESET_VP_IDX:
7316 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7317 break;
7318 case RESET_AL_PA:
83548fe2 7319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7320 "clear vha in host_map %p %06x\n", vha, key);
7321 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7322 if (slot)
7323 btree_remove32(&vha->hw->tgt.host_map, key);
7324 vha->d_id.b24 = 0;
2d70c103
NB		 7325 break;
7326 }
7327}
7328
482c9dc7
QT		 7329void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7330{
482c9dc7
QT		 7331
7332 if (!vha->d_id.b24) {
482c9dc7
QT		 7333 vha->d_id = id;
7334 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7 7335 } else if (vha->d_id.b24 != id.b24) {
482c9dc7
QT		 7336 qlt_update_vp_map(vha, RESET_AL_PA);
7337 vha->d_id = id;
7338 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7
QT		 7339 }
7340}
7341
2d70c103
NB		 7342static int __init qlt_parse_ini_mode(void)
7343{
7344 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7345 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7346 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7347 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7348 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7349 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7350 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7351 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7352 else
7353 return false;
7354
7355 return true;
7356}
7357
7358int __init qlt_init(void)
7359{
7360 int ret;
7361
bc04459c
BVA		 7362 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
7363 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
7364
2d70c103
NB		 7365 if (!qlt_parse_ini_mode()) {
7366 ql_log(ql_log_fatal, NULL, 0xe06b,
7367 "qlt_parse_ini_mode() failed\n");
7368 return -EINVAL;
7369 }
7370
7371 if (!QLA_TGT_MODE_ENABLED())
7372 return 0;
7373
2d70c103
NB		 7374 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7375 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7376 qla_tgt_mgmt_cmd), 0, NULL);
7377 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7378 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7379 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7380 return -ENOMEM;
2d70c103
NB		 7381 }
7382
b7bd104e 7383 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7384 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7385 0, NULL);
b7bd104e
AP		 7386
7387 if (!qla_tgt_plogi_cachep) {
7388 ql_log(ql_log_fatal, NULL, 0xe06d,
7389 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7390 ret = -ENOMEM;
7391 goto out_mgmt_cmd_cachep;
7392 }
7393
2d70c103
NB		 7394 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7395 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7396 if (!qla_tgt_mgmt_cmd_mempool) {
7397 ql_log(ql_log_fatal, NULL, 0xe06e,
7398 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7399 ret = -ENOMEM;
b7bd104e 7400 goto out_plogi_cachep;
2d70c103
NB		 7401 }
7402
7403 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7404 if (!qla_tgt_wq) {
7405 ql_log(ql_log_fatal, NULL, 0xe06f,
7406 "alloc_workqueue for qla_tgt_wq failed\n");
7407 ret = -ENOMEM;
7408 goto out_cmd_mempool;
7409 }
7410 /*
7411 * Return 1 to signal that initiator-mode is being disabled
7412 */
7413 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7414
7415out_cmd_mempool:
7416 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7417out_plogi_cachep:
7418 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7419out_mgmt_cmd_cachep:
7420 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7421 return ret;
7422}
7423
7424void qlt_exit(void)
7425{
7426 if (!QLA_TGT_MODE_ENABLED())
7427 return;
7428
7429 destroy_workqueue(qla_tgt_wq);
7430 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7431 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7432 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7433}
Linux 6.x block layer and io_uring tree(s)