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8e8e69d6 1// SPDX-License-Identifier: GPL-2.0-only
2d70c103
NB		 2/*
3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
4 *
5 * based on qla2x00t.c code:
6 *
7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
8 * Copyright (C) 2004 - 2005 Leonid Stoljar
9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
10 * Copyright (C) 2006 - 2010 ID7 Ltd.
11 *
12 * Forward port and refactoring to modern qla2xxx and target/configfs
13 *
4c76251e 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
2d70c103
NB		 15 */
16
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/types.h>
2d70c103
NB		 20#include <linux/blkdev.h>
21#include <linux/interrupt.h>
22#include <linux/pci.h>
23#include <linux/delay.h>
24#include <linux/list.h>
25#include <linux/workqueue.h>
26#include <asm/unaligned.h>
27#include <scsi/scsi.h>
28#include <scsi/scsi_host.h>
29#include <scsi/scsi_tcq.h>
2d70c103
NB		 30
31#include "qla_def.h"
32#include "qla_target.h"
33
d154f350
AE		 34static int ql2xtgt_tape_enable;
35module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
36MODULE_PARM_DESC(ql2xtgt_tape_enable,
37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
38
2d70c103
NB		 39static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
40module_param(qlini_mode, charp, S_IRUGO);
41MODULE_PARM_DESC(qlini_mode,
42 "Determines when initiator mode will be enabled. Possible values: "
43 "\"exclusive\" - initiator mode will be enabled on load, "
44 "disabled on enabling target mode and then on disabling target mode "
45 "enabled back; "
46 "\"disabled\" - initiator mode will never be enabled; "
ead03855
QT		 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
48 "when ready "
2d70c103
NB		 49 "\"enabled\" (default) - initiator mode will always stay enabled.");
50
99e1b683 51static int ql_dm_tgt_ex_pct = 0;
ead03855
QT		 52module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
53MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
54 "For Dual Mode (qlini_mode=dual), this parameter determines "
55 "the percentage of exchanges/cmds FW will allocate resources "
56 "for Target mode.");
57
09620eeb
QT		 58int ql2xuctrlirq = 1;
59module_param(ql2xuctrlirq, int, 0644);
60MODULE_PARM_DESC(ql2xuctrlirq,
61 "User to control IRQ placement via smp_affinity."
62 "Valid with qlini_mode=disabled."
63 "1(default): enable");
64
aa230bc5 65int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
2d70c103 66
7cf95f7e
QT		 67static int qla_sam_status = SAM_STAT_BUSY;
68static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */
33e79977 69
2d70c103
NB		 70/*
71 * From scsi/fc/fc_fcp.h
72 */
73enum fcp_resp_rsp_codes {
74 FCP_TMF_CMPL = 0,
75 FCP_DATA_LEN_INVALID = 1,
76 FCP_CMND_FIELDS_INVALID = 2,
77 FCP_DATA_PARAM_MISMATCH = 3,
78 FCP_TMF_REJECTED = 4,
79 FCP_TMF_FAILED = 5,
80 FCP_TMF_INVALID_LUN = 9,
81};
82
83/*
84 * fc_pri_ta from scsi/fc/fc_fcp.h
85 */
86#define FCP_PTA_SIMPLE 0 /* simple task attribute */
87#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
88#define FCP_PTA_ORDERED 2 /* ordered task attribute */
6efb3c0a 89#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
2d70c103
NB		 90#define FCP_PTA_MASK 7 /* mask for task attribute field */
91#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
92#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
93
94/*
95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
96 * must be called under HW lock and could unlock/lock it inside.
97 * It isn't an issue, since in the current implementation on the time when
98 * those functions are called:
99 *
100 * - Either context is IRQ and only IRQ handler can modify HW data,
101 * including rings related fields,
102 *
103 * - Or access to target mode variables from struct qla_tgt doesn't
104 * cross those functions boundaries, except tgt_stop, which
105 * additionally protected by irq_cmd_count.
106 */
107/* Predefs for callbacks handed to qla2xxx LLD */
108static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
2f424b9b 109 struct atio_from_isp *pkt, uint8_t);
82de802a
QT		 110static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp,
111 response_t *pkt);
5d964837 112static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103 113 int fn, void *iocb, int flags);
82de802a 114static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
a07100e0 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
33e79977
QT		 116static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
117 struct atio_from_isp *atio, uint16_t status, int qfull);
55a9066f 118static void qlt_disable_vha(struct scsi_qla_host *vha);
b2032fd5 119static void qlt_clear_tgt_db(struct qla_tgt *tgt);
82de802a 120static void qlt_send_notify_ack(struct qla_qpair *qpair,
a6ca8878
AP		 121 struct imm_ntfy_from_isp *ntfy,
122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
b7bd104e
AP		 124static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
125 struct imm_ntfy_from_isp *imm, int ha_locked);
726b8548
QT		 126static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha,
127 fc_port_t *fcport, bool local);
128void qlt_unreg_sess(struct fc_port *sess);
8f6fc8d4
QT		 129static void qlt_24xx_handle_abts(struct scsi_qla_host *,
130 struct abts_recv_from_24xx *);
82de802a
QT		 131static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *,
132 uint16_t);
6b0431d6
QT		 133static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t);
134static inline uint32_t qlt_make_handle(struct qla_qpair *);
8f6fc8d4 135
2d70c103
NB		 136/*
137 * Global Variables
138 */
2d70c103 139static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
b5d15312 140struct kmem_cache *qla_tgt_plogi_cachep;
2d70c103
NB		 141static mempool_t *qla_tgt_mgmt_cmd_mempool;
142static struct workqueue_struct *qla_tgt_wq;
143static DEFINE_MUTEX(qla_tgt_mutex);
144static LIST_HEAD(qla_tgt_glist);
145
be25152c
QT		 146static const char *prot_op_str(u32 prot_op)
147{
148 switch (prot_op) {
149 case TARGET_PROT_NORMAL: return "NORMAL";
150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
154 case TARGET_PROT_DIN_PASS: return "DIN_PASS";
155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
156 default: return "UNKNOWN";
157 }
158}
159
df673274
AP		 160/* This API intentionally takes dest as a parameter, rather than returning
161 * int value to avoid caller forgetting to issue wmb() after the store */
162void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
163{
164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
165 *dest = atomic_inc_return(&base_vha->generation_tick);
166 /* memory barrier */
167 wmb();
168}
169
2d70c103
NB		 170/* Might release hw lock, then reaquire!! */
171static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
172{
173 /* Send marker if required */
174 if (unlikely(vha->marker_needed != 0)) {
175 int rc = qla2x00_issue_marker(vha, vha_locked);
bd432bb5 176
2d70c103
NB		 177 if (rc != QLA_SUCCESS) {
178 ql_dbg(ql_dbg_tgt, vha, 0xe03d,
179 "qla_target(%d): issue_marker() failed\n",
180 vha->vp_idx);
181 }
182 return rc;
183 }
184 return QLA_SUCCESS;
185}
186
187static inline
188struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
df95f39a 189 be_id_t d_id)
2d70c103 190{
482c9dc7 191 struct scsi_qla_host *host;
aa20e38b 192 uint32_t key;
2d70c103 193
df95f39a
BVA		 194 if (vha->d_id.b.area == d_id.area &&
195 vha->d_id.b.domain == d_id.domain &&
196 vha->d_id.b.al_pa == d_id.al_pa)
2d70c103
NB		 197 return vha;
198
aa20e38b 199 key = be_to_port_id(d_id).b24;
2d70c103 200
482c9dc7
QT		 201 host = btree_lookup32(&vha->hw->tgt.host_map, key);
202 if (!host)
604e2e57 203 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005,
83548fe2 204 "Unable to find host %06x\n", key);
482c9dc7
QT		 205
206 return host;
2d70c103
NB		 207}
208
209static inline
210struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
211 uint16_t vp_idx)
212{
213 struct qla_hw_data *ha = vha->hw;
214
215 if (vha->vp_idx == vp_idx)
216 return vha;
217
218 BUG_ON(ha->tgt.tgt_vp_map == NULL);
219 if (likely(test_bit(vp_idx, ha->vp_idx_map)))
220 return ha->tgt.tgt_vp_map[vp_idx].vha;
221
222 return NULL;
223}
224
33e79977
QT		 225static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
226{
227 unsigned long flags;
228
229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
230
231 vha->hw->tgt.num_pend_cmds++;
fc90adaf
JC		 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds)
233 vha->qla_stats.stat_max_pend_cmds =
33e79977
QT		 234 vha->hw->tgt.num_pend_cmds;
235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
236}
237static inline void qlt_decr_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 vha->hw->tgt.num_pend_cmds--;
243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
244}
245
41dc529a
QT		 246
247static void qlt_queue_unknown_atio(scsi_qla_host_t *vha,
82de802a 248 struct atio_from_isp *atio, uint8_t ha_locked)
41dc529a
QT		 249{
250 struct qla_tgt_sess_op *u;
251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
252 unsigned long flags;
253
254 if (tgt->tgt_stop) {
83548fe2
QT		 255 ql_dbg(ql_dbg_async, vha, 0x502c,
256 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped",
257 vha->vp_idx);
41dc529a
QT		 258 goto out_term;
259 }
260
261 u = kzalloc(sizeof(*u), GFP_ATOMIC);
83548fe2 262 if (u == NULL)
41dc529a 263 goto out_term;
41dc529a
QT		 264
265 u->vha = vha;
266 memcpy(&u->atio, atio, sizeof(*atio));
267 INIT_LIST_HEAD(&u->cmd_list);
268
269 spin_lock_irqsave(&vha->cmd_list_lock, flags);
270 list_add_tail(&u->cmd_list, &vha->unknown_atio_list);
271 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
272
273 schedule_delayed_work(&vha->unknown_atio_work, 1);
274
275out:
276 return;
277
278out_term:
82de802a 279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
41dc529a
QT		 280 goto out;
281}
282
283static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha,
284 uint8_t ha_locked)
285{
286 struct qla_tgt_sess_op *u, *t;
287 scsi_qla_host_t *host;
288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
289 unsigned long flags;
290 uint8_t queued = 0;
291
292 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) {
293 if (u->aborted) {
83548fe2
QT		 294 ql_dbg(ql_dbg_async, vha, 0x502e,
295 "Freeing unknown %s %p, because of Abort\n",
41dc529a 296 "ATIO_TYPE7", u);
82de802a
QT		 297 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
298 &u->atio, ha_locked, 0);
41dc529a
QT		 299 goto abort;
300 }
301
302 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id);
303 if (host != NULL) {
604e2e57 304 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f,
83548fe2 305 "Requeuing unknown ATIO_TYPE7 %p\n", u);
41dc529a
QT		 306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked);
307 } else if (tgt->tgt_stop) {
604e2e57 308 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a,
83548fe2
QT		 309 "Freeing unknown %s %p, because tgt is being stopped\n",
310 "ATIO_TYPE7", u);
82de802a
QT		 311 qlt_send_term_exchange(vha->hw->base_qpair, NULL,
312 &u->atio, ha_locked, 0);
41dc529a 313 } else {
604e2e57 314 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
83548fe2 315 "Reschedule u %p, vha %p, host %p\n", u, vha, host);
41dc529a
QT		 316 if (!queued) {
317 queued = 1;
318 schedule_delayed_work(&vha->unknown_atio_work,
319 1);
320 }
321 continue;
322 }
323
324abort:
325 spin_lock_irqsave(&vha->cmd_list_lock, flags);
326 list_del(&u->cmd_list);
327 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
328 kfree(u);
329 }
330}
331
332void qlt_unknown_atio_work_fn(struct work_struct *work)
333{
334 struct scsi_qla_host *vha = container_of(to_delayed_work(work),
335 struct scsi_qla_host, unknown_atio_work);
336
337 qlt_try_to_dequeue_unknown_atios(vha, 0);
338}
339
3bb67df5 340static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
2f424b9b 341 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103 342{
f83adb61
QT		 343 ql_dbg(ql_dbg_tgt, vha, 0xe072,
344 "%s: qla_target(%d): type %x ox_id %04x\n",
345 __func__, vha->vp_idx, atio->u.raw.entry_type,
346 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
347
2d70c103
NB		 348 switch (atio->u.raw.entry_type) {
349 case ATIO_TYPE7:
350 {
351 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
352 atio->u.isp24.fcp_hdr.d_id);
353 if (unlikely(NULL == host)) {
354 ql_dbg(ql_dbg_tgt, vha, 0xe03e,
355 "qla_target(%d): Received ATIO_TYPE7 "
356 "with unknown d_id %x:%x:%x\n", vha->vp_idx,
df95f39a
BVA		 357 atio->u.isp24.fcp_hdr.d_id.domain,
358 atio->u.isp24.fcp_hdr.d_id.area,
359 atio->u.isp24.fcp_hdr.d_id.al_pa);
41dc529a
QT		 360
361
362 qlt_queue_unknown_atio(vha, atio, ha_locked);
2d70c103
NB		 363 break;
364 }
41dc529a
QT		 365 if (unlikely(!list_empty(&vha->unknown_atio_list)))
366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked);
367
2f424b9b 368 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 369 break;
370 }
371
372 case IMMED_NOTIFY_TYPE:
373 {
374 struct scsi_qla_host *host = vha;
375 struct imm_ntfy_from_isp *entry =
376 (struct imm_ntfy_from_isp *)atio;
377
82de802a
QT		 378 qlt_issue_marker(vha, ha_locked);
379
2d70c103 380 if ((entry->u.isp24.vp_index != 0xFF) &&
7ffa5b93 381 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) {
2d70c103
NB		 382 host = qlt_find_host_by_vp_idx(vha,
383 entry->u.isp24.vp_index);
384 if (unlikely(!host)) {
385 ql_dbg(ql_dbg_tgt, vha, 0xe03f,
386 "qla_target(%d): Received "
387 "ATIO (IMMED_NOTIFY_TYPE) "
388 "with unknown vp_index %d\n",
389 vha->vp_idx, entry->u.isp24.vp_index);
390 break;
391 }
392 }
2f424b9b 393 qlt_24xx_atio_pkt(host, atio, ha_locked);
2d70c103
NB		 394 break;
395 }
396
41dc529a
QT		 397 case VP_RPT_ID_IOCB_TYPE:
398 qla24xx_report_id_acquisition(vha,
399 (struct vp_rpt_id_entry_24xx *)atio);
400 break;
401
402 case ABTS_RECV_24XX:
403 {
404 struct abts_recv_from_24xx *entry =
405 (struct abts_recv_from_24xx *)atio;
406 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
407 entry->vp_index);
8f6fc8d4
QT		 408 unsigned long flags;
409
41dc529a 410 if (unlikely(!host)) {
83548fe2 411 ql_dbg(ql_dbg_tgt, vha, 0xe00a,
41dc529a
QT		 412 "qla_target(%d): Response pkt (ABTS_RECV_24XX) "
413 "received, with unknown vp_index %d\n",
414 vha->vp_idx, entry->vp_index);
415 break;
416 }
8f6fc8d4
QT		 417 if (!ha_locked)
418 spin_lock_irqsave(&host->hw->hardware_lock, flags);
419 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio);
420 if (!ha_locked)
421 spin_unlock_irqrestore(&host->hw->hardware_lock, flags);
41dc529a 422 break;
41dc529a
QT		 423 }
424
425 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */
426
2d70c103
NB		 427 default:
428 ql_dbg(ql_dbg_tgt, vha, 0xe040,
429 "qla_target(%d): Received unknown ATIO atio "
430 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
431 break;
432 }
433
3bb67df5 434 return false;
2d70c103
NB		 435}
436
82de802a
QT		 437void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
438 struct rsp_que *rsp, response_t *pkt)
2d70c103
NB		 439{
440 switch (pkt->entry_type) {
f83adb61
QT		 441 case CTIO_CRC2:
442 ql_dbg(ql_dbg_tgt, vha, 0xe073,
443 "qla_target(%d):%s: CRC2 Response pkt\n",
444 vha->vp_idx, __func__);
df561f66 445 fallthrough;
2d70c103
NB		 446 case CTIO_TYPE7:
447 {
448 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
449 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
450 entry->vp_index);
451 if (unlikely(!host)) {
452 ql_dbg(ql_dbg_tgt, vha, 0xe041,
453 "qla_target(%d): Response pkt (CTIO_TYPE7) "
454 "received, with unknown vp_index %d\n",
455 vha->vp_idx, entry->vp_index);
456 break;
457 }
82de802a 458 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 459 break;
460 }
461
462 case IMMED_NOTIFY_TYPE:
463 {
da6d2965 464 struct scsi_qla_host *host;
2d70c103
NB		 465 struct imm_ntfy_from_isp *entry =
466 (struct imm_ntfy_from_isp *)pkt;
467
468 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
469 if (unlikely(!host)) {
470 ql_dbg(ql_dbg_tgt, vha, 0xe042,
471 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
472 "received, with unknown vp_index %d\n",
473 vha->vp_idx, entry->u.isp24.vp_index);
474 break;
475 }
82de802a 476 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 477 break;
478 }
479
480 case NOTIFY_ACK_TYPE:
481 {
482 struct scsi_qla_host *host = vha;
483 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
484
485 if (0xFF != entry->u.isp24.vp_index) {
486 host = qlt_find_host_by_vp_idx(vha,
487 entry->u.isp24.vp_index);
488 if (unlikely(!host)) {
489 ql_dbg(ql_dbg_tgt, vha, 0xe043,
490 "qla_target(%d): Response "
491 "pkt (NOTIFY_ACK_TYPE) "
492 "received, with unknown "
493 "vp_index %d\n", vha->vp_idx,
494 entry->u.isp24.vp_index);
495 break;
496 }
497 }
82de802a 498 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 499 break;
500 }
501
502 case ABTS_RECV_24XX:
503 {
504 struct abts_recv_from_24xx *entry =
505 (struct abts_recv_from_24xx *)pkt;
506 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
507 entry->vp_index);
508 if (unlikely(!host)) {
509 ql_dbg(ql_dbg_tgt, vha, 0xe044,
510 "qla_target(%d): Response pkt "
511 "(ABTS_RECV_24XX) received, with unknown "
512 "vp_index %d\n", vha->vp_idx, entry->vp_index);
513 break;
514 }
82de802a 515 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 516 break;
517 }
518
519 case ABTS_RESP_24XX:
520 {
521 struct abts_resp_to_24xx *entry =
522 (struct abts_resp_to_24xx *)pkt;
523 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
524 entry->vp_index);
525 if (unlikely(!host)) {
526 ql_dbg(ql_dbg_tgt, vha, 0xe045,
527 "qla_target(%d): Response pkt "
528 "(ABTS_RECV_24XX) received, with unknown "
529 "vp_index %d\n", vha->vp_idx, entry->vp_index);
530 break;
531 }
82de802a 532 qlt_response_pkt(host, rsp, pkt);
2d70c103
NB		 533 break;
534 }
2d70c103 535 default:
82de802a 536 qlt_response_pkt(vha, rsp, pkt);
2d70c103
NB		 537 break;
538 }
539
540}
541
b7bd104e
AP		 542/*
543 * All qlt_plogi_ack_t operations are protected by hardware_lock
544 */
726b8548
QT		 545static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport,
546 struct imm_ntfy_from_isp *ntfy, int type)
547{
548 struct qla_work_evt *e;
bd432bb5 549
726b8548
QT		 550 e = qla2x00_alloc_work(vha, QLA_EVT_NACK);
551 if (!e)
552 return QLA_FUNCTION_FAILED;
553
554 e->u.nack.fcport = fcport;
555 e->u.nack.type = type;
556 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp));
557 return qla2x00_post_work(vha, e);
558}
559
6c18a43e 560static void qla2x00_async_nack_sp_done(srb_t *sp, int res)
726b8548 561{
25ff6af1 562 struct scsi_qla_host *vha = sp->vha;
726b8548
QT		 563 unsigned long flags;
564
83548fe2
QT		 565 ql_dbg(ql_dbg_disc, vha, 0x20f2,
566 "Async done-%s res %x %8phC type %d\n",
567 sp->name, res, sp->fcport->port_name, sp->type);
726b8548
QT		 568
569 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
570 sp->fcport->flags &= ~FCF_ASYNC_SENT;
7c3f8fd1 571 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset;
726b8548
QT		 572
573 switch (sp->type) {
574 case SRB_NACK_PLOGI:
575 sp->fcport->login_gen++;
576 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
577 sp->fcport->logout_on_delete = 1;
5b33469a 578 sp->fcport->plogi_nack_done_deadline = jiffies + HZ;
3515832c 579 sp->fcport->send_els_logo = 0;
726b8548
QT		 580 break;
581
582 case SRB_NACK_PRLI:
583 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP;
584 sp->fcport->deleted = 0;
3515832c 585 sp->fcport->send_els_logo = 0;
726b8548
QT		 586
587 if (!sp->fcport->login_succ &&
588 !IS_SW_RESV_ADDR(sp->fcport->d_id)) {
589 sp->fcport->login_succ = 1;
590
591 vha->fcport_count++;
0aca7784 592 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
cd4ed6b4 593 qla24xx_sched_upd_fcport(sp->fcport);
0aca7784 594 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
29528491
QT		 595 } else {
596 sp->fcport->login_retry = 0;
27258a57
SS		 597 qla2x00_set_fcport_disc_state(sp->fcport,
598 DSC_LOGIN_COMPLETE);
29528491
QT		 599 sp->fcport->deleted = 0;
600 sp->fcport->logout_on_delete = 1;
726b8548
QT		 601 }
602 break;
603
604 case SRB_NACK_LOGO:
605 sp->fcport->login_gen++;
606 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
607 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE);
608 break;
609 }
610 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
611
25ff6af1 612 sp->free(sp);
726b8548
QT		 613}
614
615int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport,
616 struct imm_ntfy_from_isp *ntfy, int type)
617{
618 int rval = QLA_FUNCTION_FAILED;
619 srb_t *sp;
620 char *c = NULL;
621
622 fcport->flags |= FCF_ASYNC_SENT;
623 switch (type) {
624 case SRB_NACK_PLOGI:
625 fcport->fw_login_state = DSC_LS_PLOGI_PEND;
626 c = "PLOGI";
627 break;
628 case SRB_NACK_PRLI:
629 fcport->fw_login_state = DSC_LS_PRLI_PEND;
ec7193e2 630 fcport->deleted = 0;
726b8548
QT		 631 c = "PRLI";
632 break;
633 case SRB_NACK_LOGO:
634 fcport->fw_login_state = DSC_LS_LOGO_PEND;
635 c = "LOGO";
636 break;
637 }
638
639 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
640 if (!sp)
641 goto done;
642
643 sp->type = type;
644 sp->name = "nack";
645
e74e7d95 646 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
726b8548
QT		 647 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2);
648
649 sp->u.iocb_cmd.u.nack.ntfy = ntfy;
726b8548
QT		 650 sp->done = qla2x00_async_nack_sp_done;
651
83548fe2
QT		 652 ql_dbg(ql_dbg_disc, vha, 0x20f4,
653 "Async-%s %8phC hndl %x %s\n",
654 sp->name, fcport->port_name, sp->handle, c);
726b8548 655
f233e8c0
BK		 656 rval = qla2x00_start_sp(sp);
657 if (rval != QLA_SUCCESS)
658 goto done_free_sp;
659
726b8548
QT		 660 return rval;
661
662done_free_sp:
25ff6af1 663 sp->free(sp);
726b8548
QT		 664done:
665 fcport->flags &= ~FCF_ASYNC_SENT;
666 return rval;
667}
668
669void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
670{
671 fc_port_t *t;
726b8548
QT		 672
673 switch (e->u.nack.type) {
674 case SRB_NACK_PRLI:
1021f0bc
QT		 675 t = e->u.nack.fcport;
676 flush_work(&t->del_work);
677 flush_work(&t->free_work);
726b8548
QT		 678 mutex_lock(&vha->vha_tgt.tgt_mutex);
679 t = qlt_create_sess(vha, e->u.nack.fcport, 0);
680 mutex_unlock(&vha->vha_tgt.tgt_mutex);
681 if (t) {
83548fe2 682 ql_log(ql_log_info, vha, 0xd034,
726b8548 683 "%s create sess success %p", __func__, t);
726b8548
QT		 684 /* create sess has an extra kref */
685 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport);
726b8548
QT		 686 }
687 break;
688 }
689 qla24xx_async_notify_ack(vha, e->u.nack.fcport,
845bbb09 690 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type);
726b8548
QT		 691}
692
693void qla24xx_delete_sess_fn(struct work_struct *work)
694{
695 fc_port_t *fcport = container_of(work, struct fc_port, del_work);
696 struct qla_hw_data *ha = fcport->vha->hw;
726b8548
QT		 697
698 if (fcport->se_sess) {
699 ha->tgt.tgt_ops->shutdown_sess(fcport);
700 ha->tgt.tgt_ops->put_sess(fcport);
701 } else {
702 qlt_unreg_sess(fcport);
703 }
726b8548
QT		 704}
705
706/*
707 * Called from qla2x00_reg_remote_port()
708 */
709void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
710{
711 struct qla_hw_data *ha = vha->hw;
712 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
713 struct fc_port *sess = fcport;
714 unsigned long flags;
715
716 if (!vha->hw->tgt.tgt_ops)
717 return;
718
719 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
720 if (tgt->tgt_stop) {
721 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
722 return;
723 }
724
725 if (fcport->disc_state == DSC_DELETE_PEND) {
726 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
727 return;
728 }
729
730 if (!sess->se_sess) {
731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
732
733 mutex_lock(&vha->vha_tgt.tgt_mutex);
734 sess = qlt_create_sess(vha, fcport, false);
735 mutex_unlock(&vha->vha_tgt.tgt_mutex);
736
737 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
738 } else {
739 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) {
740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
741 return;
742 }
743
744 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 745 ql_dbg(ql_dbg_disc, vha, 0x2107,
726b8548
QT		 746 "%s: kref_get fail sess %8phC \n",
747 __func__, sess->port_name);
748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
749 return;
750 }
751
752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
753 "qla_target(%u): %ssession for port %8phC "
754 "(loop ID %d) reappeared\n", vha->vp_idx,
755 sess->local ? "local " : "", sess->port_name, sess->loop_id);
756
757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
758 "Reappeared sess %p\n", sess);
759
760 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id,
761 fcport->loop_id,
762 (fcport->flags & FCF_CONF_COMP_SUPPORTED));
763 }
764
765 if (sess && sess->local) {
766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
767 "qla_target(%u): local session for "
768 "port %8phC (loop ID %d) became global\n", vha->vp_idx,
769 fcport->port_name, sess->loop_id);
770 sess->local = 0;
771 }
726b8548 772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
300ec741
BVA		 773
774 ha->tgt.tgt_ops->put_sess(sess);
726b8548 775}
b7bd104e
AP		 776
777/*
778 * This is a zero-base ref-counting solution, since hardware_lock
779 * guarantees that ref_count is not modified concurrently.
780 * Upon successful return content of iocb is undefined
781 */
5d964837 782static struct qlt_plogi_ack_t *
b7bd104e
AP		 783qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id,
784 struct imm_ntfy_from_isp *iocb)
785{
5d964837 786 struct qlt_plogi_ack_t *pla;
b7bd104e 787
57bf595a
BVA		 788 lockdep_assert_held(&vha->hw->hardware_lock);
789
b7bd104e
AP		 790 list_for_each_entry(pla, &vha->plogi_ack_list, list) {
791 if (pla->id.b24 == id->b24) {
48acad09
QT		 792 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
793 "%s %d %8phC Term INOT due to new INOT",
794 __func__, __LINE__,
795 pla->iocb.u.isp24.port_name);
b7bd104e 796 qlt_send_term_imm_notif(vha, &pla->iocb, 1);
5d964837 797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 798 return pla;
799 }
800 }
801
802 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC);
803 if (!pla) {
804 ql_dbg(ql_dbg_async, vha, 0x5088,
805 "qla_target(%d): Allocation of plogi_ack failed\n",
806 vha->vp_idx);
807 return NULL;
808 }
809
5d964837 810 memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
b7bd104e
AP		 811 pla->id = *id;
812 list_add_tail(&pla->list, &vha->plogi_ack_list);
813
814 return pla;
815}
816
726b8548 817void qlt_plogi_ack_unref(struct scsi_qla_host *vha,
5d964837 818 struct qlt_plogi_ack_t *pla)
b7bd104e 819{
5d964837 820 struct imm_ntfy_from_isp *iocb = &pla->iocb;
726b8548
QT		 821 port_id_t port_id;
822 uint16_t loop_id;
823 fc_port_t *fcport = pla->fcport;
824
b7bd104e
AP		 825 BUG_ON(!pla->ref_count);
826 pla->ref_count--;
827
828 if (pla->ref_count)
829 return;
830
726b8548 831 ql_dbg(ql_dbg_disc, vha, 0x5089,
b7bd104e 832 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x"
5d964837
QT		 833 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name,
834 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1],
835 iocb->u.isp24.port_id[0],
836 le16_to_cpu(iocb->u.isp24.nport_handle),
837 iocb->u.isp24.exchange_address, iocb->ox_id);
726b8548
QT		 838
839 port_id.b.domain = iocb->u.isp24.port_id[2];
840 port_id.b.area = iocb->u.isp24.port_id[1];
841 port_id.b.al_pa = iocb->u.isp24.port_id[0];
842 port_id.b.rsvd_1 = 0;
843
844 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
845
846 fcport->loop_id = loop_id;
847 fcport->d_id = port_id;
9cd883f0
QT		 848 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
849 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI);
850 else
851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI);
726b8548
QT		 852
853 list_for_each_entry(fcport, &vha->vp_fcports, list) {
854 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla)
855 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
856 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla)
857 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
858 }
b7bd104e
AP		 859
860 list_del(&pla->list);
861 kmem_cache_free(qla_tgt_plogi_cachep, pla);
862}
863
726b8548 864void
5d964837
QT		 865qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
866 struct fc_port *sess, enum qlt_plogi_link_t link)
b7bd104e 867{
5d964837 868 struct imm_ntfy_from_isp *iocb = &pla->iocb;
b7bd104e
AP		 869 /* Inc ref_count first because link might already be pointing at pla */
870 pla->ref_count++;
871
726b8548
QT		 872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097,
873 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC"
874 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n",
875 sess, link, sess->port_name,
876 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2],
877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
878 pla->ref_count, pla, link);
879
5ef696aa
QT		 880 if (link == QLT_PLOGI_LINK_CONFLICT) {
881 switch (sess->disc_state) {
882 case DSC_DELETED:
883 case DSC_DELETE_PEND:
884 pla->ref_count--;
885 return;
886 default:
887 break;
888 }
889 }
890
b7bd104e
AP		 891 if (sess->plogi_link[link])
892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
893
726b8548
QT		 894 if (link == QLT_PLOGI_LINK_SAME_WWN)
895 pla->fcport = sess;
b7bd104e
AP		 896
897 sess->plogi_link[link] = pla;
898}
899
71cdc079
AP		 900typedef struct {
901 /* These fields must be initialized by the caller */
902 port_id_t id;
903 /*
904 * number of cmds dropped while we were waiting for
905 * initiator to ack LOGO initialize to 1 if LOGO is
906 * triggered by a command, otherwise, to 0
907 */
908 int cmd_count;
909
910 /* These fields are used by callee */
911 struct list_head list;
912} qlt_port_logo_t;
913
914static void
915qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo)
916{
917 qlt_port_logo_t *tmp;
918 int res;
919
920 mutex_lock(&vha->vha_tgt.tgt_mutex);
921
922 list_for_each_entry(tmp, &vha->logo_list, list) {
923 if (tmp->id.b24 == logo->id.b24) {
924 tmp->cmd_count += logo->cmd_count;
925 mutex_unlock(&vha->vha_tgt.tgt_mutex);
926 return;
927 }
928 }
929
930 list_add_tail(&logo->list, &vha->logo_list);
931
932 mutex_unlock(&vha->vha_tgt.tgt_mutex);
933
934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id);
935
936 mutex_lock(&vha->vha_tgt.tgt_mutex);
937 list_del(&logo->list);
938 mutex_unlock(&vha->vha_tgt.tgt_mutex);
939
b7bd104e
AP		 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098,
941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n",
942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa,
943 logo->cmd_count, res);
71cdc079
AP		 944}
945
9dd9686b 946void qlt_free_session_done(struct work_struct *work)
2d70c103 947{
5d964837 948 struct fc_port *sess = container_of(work, struct fc_port,
2d70c103
NB		 949 free_work);
950 struct qla_tgt *tgt = sess->tgt;
951 struct scsi_qla_host *vha = sess->vha;
952 struct qla_hw_data *ha = vha->hw;
a6ca8878
AP		 953 unsigned long flags;
954 bool logout_started = false;
fd5564ba 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
9cd883f0
QT		 956 struct qlt_plogi_ack_t *own =
957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
a6ca8878 958
e1217dc3 959 ql_dbg(ql_dbg_disc, vha, 0xf084,
a6ca8878 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
b7bd104e 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n",
a6ca8878 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
37cacc0a 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa,
a6ca8878 964 sess->logout_on_delete, sess->keep_nport_handle,
b7bd104e 965 sess->send_els_logo);
2d70c103 966
726b8548 967 if (!IS_SW_RESV_ADDR(sess->d_id)) {
3c75ad1d 968 qla2x00_mark_device_lost(vha, sess, 0);
2137490f 969
41dc529a
QT		 970 if (sess->send_els_logo) {
971 qlt_port_logo_t logo;
71cdc079 972
41dc529a
QT		 973 logo.id = sess->d_id;
974 logo.cmd_count = 0;
cb97f2c2
QT		 975 if (!own)
976 qlt_send_first_logo(vha, &logo);
a2390348 977 sess->send_els_logo = 0;
41dc529a
QT		 978 }
979
ba743f91 980 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
41dc529a
QT		 981 int rc;
982
9cd883f0
QT		 983 if (!own ||
984 (own &&
985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) {
986 rc = qla2x00_post_async_logout_work(vha, sess,
987 NULL);
988 if (rc != QLA_SUCCESS)
989 ql_log(ql_log_warn, vha, 0xf085,
990 "Schedule logo failed sess %p rc %d\n",
991 sess, rc);
992 else
993 logout_started = true;
994 } else if (own && (own->iocb.u.isp24.status_subcode ==
995 ELS_PRLI) && ha->flags.rida_fmt2) {
996 rc = qla2x00_post_async_prlo_work(vha, sess,
997 NULL);
998 if (rc != QLA_SUCCESS)
999 ql_log(ql_log_warn, vha, 0xf085,
1000 "Schedule PRLO failed sess %p rc %d\n",
1001 sess, rc);
1002 else
1003 logout_started = true;
1004 }
baf23edd
QT		 1005 } /* if sess->logout_on_delete */
1006
1007 if (sess->nvme_flag & NVME_FLAG_REGISTERED &&
1008 !(sess->nvme_flag & NVME_FLAG_DELETING)) {
1009 sess->nvme_flag |= NVME_FLAG_DELETING;
1010 qla_nvme_unregister_remote_port(sess);
41dc529a 1011 }
726b8548 1012 }
a6ca8878 1013
2d70c103
NB		 1014 /*
1015 * Release the target session for FC Nexus from fabric module code.
1016 */
1017 if (sess->se_sess != NULL)
1018 ha->tgt.tgt_ops->free_session(sess);
1019
a6ca8878
AP		 1020 if (logout_started) {
1021 bool traced = false;
c3b6a1d3 1022 u16 cnt = 0;
a6ca8878 1023
6aa7de05 1024 while (!READ_ONCE(sess->logout_completed)) {
a6ca8878 1025 if (!traced) {
e1217dc3 1026 ql_dbg(ql_dbg_disc, vha, 0xf086,
a6ca8878
AP		 1027 "%s: waiting for sess %p logout\n",
1028 __func__, sess);
1029 traced = true;
1030 }
1031 msleep(100);
c3b6a1d3
QT		 1032 cnt++;
1033 if (cnt > 200)
1034 break;
a6ca8878
AP		 1035 }
1036
726b8548 1037 ql_dbg(ql_dbg_disc, vha, 0xf087,
9cd883f0 1038 "%s: sess %p logout completed\n", __func__, sess);
41dc529a
QT		 1039 }
1040
1041 if (sess->logo_ack_needed) {
1042 sess->logo_ack_needed = 0;
1043 qla24xx_async_notify_ack(vha, sess,
1044 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO);
a6ca8878
AP		 1045 }
1046
e1217dc3
QT		 1047 spin_lock_irqsave(&vha->work_lock, flags);
1048 sess->flags &= ~FCF_ASYNC_SENT;
1049 spin_unlock_irqrestore(&vha->work_lock, flags);
1050
726b8548
QT		 1051 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1052 if (sess->se_sess) {
1053 sess->se_sess = NULL;
1054 if (tgt && !IS_SW_RESV_ADDR(sess->d_id))
1055 tgt->sess_count--;
1056 }
1057
27258a57 1058 qla2x00_set_fcport_disc_state(sess, DSC_DELETED);
726b8548
QT		 1059 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
1060 sess->deleted = QLA_SESS_DELETED;
726b8548
QT		 1061
1062 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) {
1063 vha->fcport_count--;
1064 sess->login_succ = 0;
1065 }
1066
ba743f91 1067 qla2x00_clear_loop_id(sess);
726b8548
QT		 1068
1069 if (sess->conflict) {
1070 sess->conflict->login_pause = 0;
1071 sess->conflict = NULL;
1072 if (!test_bit(UNLOADING, &vha->dpc_flags))
1073 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1074 }
1075
b7bd104e 1076 {
5d964837 1077 struct qlt_plogi_ack_t *con =
b7bd104e 1078 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
5d964837 1079 struct imm_ntfy_from_isp *iocb;
bd432bb5 1080
48acad09 1081 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
b7bd104e
AP		 1082
1083 if (con) {
5d964837 1084 iocb = &con->iocb;
b7bd104e 1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099,
5d964837
QT		 1086 "se_sess %p / sess %p port %8phC is gone,"
1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n",
1088 sess->se_sess, sess, sess->port_name,
1089 own ? "releasing own PLOGI" : "no own PLOGI pending",
1090 own ? own->ref_count : -1,
1091 iocb->u.isp24.port_name, con->ref_count);
b7bd104e 1092 qlt_plogi_ack_unref(vha, con);
726b8548 1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL;
b7bd104e
AP		 1094 } else {
1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a,
1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n",
1097 sess->se_sess, sess, sess->port_name,
1098 own ? "releasing own PLOGI" :
1099 "no own PLOGI pending",
1100 own ? own->ref_count : -1);
1101 }
1102
726b8548
QT		 1103 if (own) {
1104 sess->fw_login_state = DSC_LS_PLOGI_PEND;
b7bd104e 1105 qlt_plogi_ack_unref(vha, own);
726b8548
QT		 1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL;
1107 }
b7bd104e 1108 }
1ae634eb 1109
86196a8f 1110 sess->explicit_logout = 0;
5d964837 1111 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
fd5564ba 1112 sess->free_pending = 0;
5d964837 1113
e1217dc3 1114 ql_dbg(ql_dbg_disc, vha, 0xf001,
726b8548
QT		 1115 "Unregistration of sess %p %8phC finished fcp_cnt %d\n",
1116 sess, sess->port_name, vha->fcport_count);
2d70c103 1117
726b8548 1118 if (tgt && (tgt->sess_count == 0))
2d70c103 1119 wake_up_all(&tgt->waitQ);
726b8548 1120
fd5564ba 1121 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) &&
f5187b7d 1122 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) &&
fd5564ba 1123 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) {
a4239945
QT		 1124 switch (vha->host->active_mode) {
1125 case MODE_INITIATOR:
1126 case MODE_DUAL:
1127 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
1128 qla2xxx_wake_dpc(vha);
1129 break;
1130 case MODE_TARGET:
1131 default:
1132 /* no-op */
1133 break;
1134 }
726b8548 1135 }
fd5564ba
QT		 1136
1137 if (vha->fcport_count == 0)
1138 wake_up_all(&vha->fcport_waitQ);
2d70c103
NB		 1139}
1140
7560151b 1141/* ha->tgt.sess_lock supposed to be held on entry */
5d964837 1142void qlt_unreg_sess(struct fc_port *sess)
2d70c103
NB		 1143{
1144 struct scsi_qla_host *vha = sess->vha;
1ae634eb 1145 unsigned long flags;
2d70c103 1146
83548fe2 1147 ql_dbg(ql_dbg_disc, sess->vha, 0x210a,
5d964837
QT		 1148 "%s sess %p for deletion %8phC\n",
1149 __func__, sess, sess->port_name);
1150
1ae634eb
QT		 1151 spin_lock_irqsave(&sess->vha->work_lock, flags);
1152 if (sess->free_pending) {
1153 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1154 return;
1155 }
1156 sess->free_pending = 1;
e1217dc3
QT		 1157 /*
1158 * Use FCF_ASYNC_SENT flag to block other cmds used in sess
1159 * management from being sent.
1160 */
1161 sess->flags |= FCF_ASYNC_SENT;
1ae634eb
QT		 1162 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
1163
36c78452
QT		 1164 if (sess->se_sess)
1165 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
2d70c103 1166
a6ca8878 1167 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
27258a57 1168 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
726b8548
QT		 1169 sess->last_rscn_gen = sess->rscn_gen;
1170 sess->last_login_gen = sess->login_gen;
2d70c103 1171
fd5564ba 1172 queue_work(sess->vha->hw->wq, &sess->free_work);
2d70c103 1173}
5d964837 1174EXPORT_SYMBOL(qlt_unreg_sess);
7560151b 1175
2d70c103
NB		 1176static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
1177{
1178 struct qla_hw_data *ha = vha->hw;
5d964837 1179 struct fc_port *sess = NULL;
2d70c103
NB		 1180 uint16_t loop_id;
1181 int res = 0;
1182 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
7560151b 1183 unsigned long flags;
2d70c103
NB		 1184
1185 loop_id = le16_to_cpu(n->u.isp24.nport_handle);
1186 if (loop_id == 0xFFFF) {
2d70c103 1187 /* Global event */
b2032fd5 1188 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
7560151b 1189 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
b2032fd5 1190 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
7560151b 1191 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 1192 } else {
7560151b 1193 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1194 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b 1195 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1196 }
1197
1198 ql_dbg(ql_dbg_tgt, vha, 0xe000,
1199 "Using sess for qla_tgt_reset: %p\n", sess);
1200 if (!sess) {
1201 res = -ESRCH;
1202 return res;
1203 }
1204
1205 ql_dbg(ql_dbg_tgt, vha, 0xe047,
7b833558
OK		 1206 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
1207 "loop_id %d)\n", vha->host_no, sess, sess->port_name,
2d70c103
NB		 1208 mcmd, loop_id);
1209
bb1181c9 1210 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK);
2d70c103
NB		 1211}
1212
726b8548
QT		 1213static void qla24xx_chk_fcp_state(struct fc_port *sess)
1214{
7c3f8fd1 1215 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) {
726b8548
QT		 1216 sess->logout_on_delete = 0;
1217 sess->logo_ack_needed = 0;
1218 sess->fw_login_state = DSC_LS_PORT_UNAVAIL;
726b8548
QT		 1219 }
1220}
1221
94cff6e1 1222void qlt_schedule_sess_for_deletion(struct fc_port *sess)
2d70c103
NB		 1223{
1224 struct qla_tgt *tgt = sess->tgt;
d8630bb9 1225 unsigned long flags;
cd4ed6b4 1226 u16 sec;
2d70c103 1227
cd4ed6b4
QT		 1228 switch (sess->disc_state) {
1229 case DSC_DELETE_PEND:
726b8548 1230 return;
cd4ed6b4 1231 case DSC_DELETED:
726b8548
QT		 1232 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
1233 wake_up_all(&tgt->waitQ);
1234 if (sess->vha->fcport_count == 0)
1235 wake_up_all(&sess->vha->fcport_waitQ);
1236
1237 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
1238 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
a6ca8878 1239 return;
cd4ed6b4
QT		 1240 break;
1241 case DSC_UPD_FCPORT:
1242 /*
1243 * This port is not done reporting to upper layer.
1244 * let it finish
1245 */
1246 sess->next_disc_state = DSC_DELETE_PEND;
1247 sec = jiffies_to_msecs(jiffies -
1248 sess->jiffies_at_registration)/1000;
1249 if (sess->sec_since_registration < sec && sec && !(sec % 5)) {
1250 sess->sec_since_registration = sec;
1251 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
1252 "%s %8phC : Slow Rport registration(%d Sec)\n",
1253 __func__, sess->port_name, sec);
1254 }
1255 return;
1256 default:
1257 break;
a6ca8878 1258 }
2d70c103 1259
49d7bd36 1260 spin_lock_irqsave(&sess->vha->work_lock, flags);
d8630bb9 1261 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
49d7bd36 1262 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
d8630bb9
QT		 1263 return;
1264 }
726b8548 1265 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
49d7bd36 1266 spin_unlock_irqrestore(&sess->vha->work_lock, flags);
d8630bb9 1267
8aaac2d7 1268 sess->prli_pend_timer = 0;
27258a57 1269 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
d8630bb9 1270
726b8548 1271 qla24xx_chk_fcp_state(sess);
2d70c103 1272
abb31aea 1273 ql_dbg(ql_dbg_disc, sess->vha, 0xe001,
5c640053
QT		 1274 "Scheduling sess %p for deletion %8phC\n",
1275 sess, sess->port_name);
2d70c103 1276
1c6cacf4 1277 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work));
726b8548 1278}
2d70c103 1279
c5701042 1280static void qlt_clear_tgt_db(struct qla_tgt *tgt)
2d70c103 1281{
5d964837
QT		 1282 struct fc_port *sess;
1283 scsi_qla_host_t *vha = tgt->vha;
2d70c103 1284
5d964837
QT		 1285 list_for_each_entry(sess, &vha->vp_fcports, list) {
1286 if (sess->se_sess)
94cff6e1 1287 qlt_schedule_sess_for_deletion(sess);
5d964837 1288 }
2d70c103
NB		 1289
1290 /* At this point tgt could be already dead */
1291}
1292
df95f39a 1293static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id,
2d70c103
NB		 1294 uint16_t *loop_id)
1295{
1296 struct qla_hw_data *ha = vha->hw;
1297 dma_addr_t gid_list_dma;
9c17c3b1 1298 struct gid_list_info *gid_list, *gid;
2d70c103
NB		 1299 int res, rc, i;
1300 uint16_t entries;
1301
1302 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1303 &gid_list_dma, GFP_KERNEL);
1304 if (!gid_list) {
1305 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044,
1306 "qla_target(%d): DMA Alloc failed of %u\n",
1307 vha->vp_idx, qla2x00_gid_list_size(ha));
1308 return -ENOMEM;
1309 }
1310
1311 /* Get list of logged in devices */
15f30a57 1312 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries);
2d70c103
NB		 1313 if (rc != QLA_SUCCESS) {
1314 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045,
1315 "qla_target(%d): get_id_list() failed: %x\n",
1316 vha->vp_idx, rc);
71cdc079 1317 res = -EBUSY;
2d70c103
NB		 1318 goto out_free_id_list;
1319 }
1320
9c17c3b1 1321 gid = gid_list;
71cdc079 1322 res = -ENOENT;
2d70c103 1323 for (i = 0; i < entries; i++) {
df95f39a
BVA		 1324 if (gid->al_pa == s_id.al_pa &&
1325 gid->area == s_id.area &&
1326 gid->domain == s_id.domain) {
2d70c103
NB		 1327 *loop_id = le16_to_cpu(gid->loop_id);
1328 res = 0;
1329 break;
1330 }
9c17c3b1 1331 gid = (void *)gid + ha->gid_list_info_size;
2d70c103
NB		 1332 }
1333
1334out_free_id_list:
1335 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
1336 gid_list, gid_list_dma);
1337 return res;
1338}
1339
2d70c103
NB		 1340/*
1341 * Adds an extra ref to allow to drop hw lock after adding sess to the list.
1342 * Caller must put it.
1343 */
5d964837 1344static struct fc_port *qlt_create_sess(
2d70c103
NB		 1345 struct scsi_qla_host *vha,
1346 fc_port_t *fcport,
1347 bool local)
1348{
1349 struct qla_hw_data *ha = vha->hw;
726b8548 1350 struct fc_port *sess = fcport;
2d70c103 1351 unsigned long flags;
2d70c103 1352
726b8548
QT		 1353 if (vha->vha_tgt.qla_tgt->tgt_stop)
1354 return NULL;
2d70c103 1355
726b8548
QT		 1356 if (fcport->se_sess) {
1357 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1358 ql_dbg(ql_dbg_disc, vha, 0x20f6,
726b8548
QT		 1359 "%s: kref_get_unless_zero failed for %8phC\n",
1360 __func__, sess->port_name);
1361 return NULL;
2d70c103 1362 }
726b8548 1363 return fcport;
2d70c103 1364 }
0e8cd71c 1365 sess->tgt = vha->vha_tgt.qla_tgt;
2d70c103 1366 sess->local = local;
a6ca8878 1367
726b8548
QT		 1368 /*
1369 * Under normal circumstances we want to logout from firmware when
a6ca8878
AP		 1370 * session eventually ends and release corresponding nport handle.
1371 * In the exception cases (e.g. when new PLOGI is waiting) corresponding
726b8548
QT		 1372 * code will adjust these flags as necessary.
1373 */
a6ca8878
AP		 1374 sess->logout_on_delete = 1;
1375 sess->keep_nport_handle = 0;
726b8548 1376 sess->logout_completed = 0;
2d70c103 1377
726b8548
QT		 1378 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
1379 &fcport->port_name[0], sess) < 0) {
83548fe2 1380 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015,
726b8548
QT		 1381 "(%d) %8phC check_initiator_node_acl failed\n",
1382 vha->vp_idx, fcport->port_name);
1383 return NULL;
1384 } else {
1385 kref_init(&fcport->sess_kref);
1386 /*
1387 * Take an extra reference to ->sess_kref here to handle
1388 * fc_port access across ->tgt.sess_lock reaquire.
1389 */
1390 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 1391 ql_dbg(ql_dbg_disc, vha, 0x20f7,
726b8548
QT		 1392 "%s: kref_get_unless_zero failed for %8phC\n",
1393 __func__, sess->port_name);
1394 return NULL;
1395 }
2d70c103 1396
726b8548
QT		 1397 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1398 if (!IS_SW_RESV_ADDR(sess->d_id))
1399 vha->vha_tgt.qla_tgt->sess_count++;
2d70c103 1400
726b8548
QT		 1401 qlt_do_generation_tick(vha, &sess->generation);
1402 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1403 }
1404
1405 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
1406 "Adding sess %p se_sess %p to tgt %p sess_count %d\n",
1407 sess, sess->se_sess, vha->vha_tgt.qla_tgt,
1408 vha->vha_tgt.qla_tgt->sess_count);
2d70c103
NB		 1409
1410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
7b833558
OK		 1411 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
1412 "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
1413 vha->vp_idx, local ? "local " : "", fcport->port_name,
37cacc0a
QT		 1414 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area,
1415 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
2d70c103
NB		 1416
1417 return sess;
1418}
1419
df673274
AP		 1420/*
1421 * max_gen - specifies maximum session generation
1422 * at which this deletion requestion is still valid
1423 */
1424void
1425qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
2d70c103 1426{
0e8cd71c 1427 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 1428 struct fc_port *sess = fcport;
7560151b 1429 unsigned long flags;
2d70c103
NB		 1430
1431 if (!vha->hw->tgt.tgt_ops)
1432 return;
1433
b2032fd5 1434 if (!tgt)
2d70c103
NB		 1435 return;
1436
7560151b 1437 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
2d70c103 1438 if (tgt->tgt_stop) {
7560151b 1439 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1440 return;
1441 }
5d964837 1442 if (!sess->se_sess) {
7560151b 1443 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
2d70c103
NB		 1444 return;
1445 }
1446
df673274 1447 if (max_gen - sess->generation < 0) {
7560151b 1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
df673274
AP		 1449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
1450 "Ignoring stale deletion request for se_sess %p / sess %p"
1451 " for port %8phC, req_gen %d, sess_gen %d\n",
1452 sess->se_sess, sess, sess->port_name, max_gen,
1453 sess->generation);
1454 return;
1455 }
1456
2d70c103
NB		 1457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
1458
1459 sess->local = 1;
7560151b 1460 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
1c6cacf4 1461 qlt_schedule_sess_for_deletion(sess);
2d70c103
NB		 1462}
1463
1464static inline int test_tgt_sess_count(struct qla_tgt *tgt)
1465{
1466 struct qla_hw_data *ha = tgt->ha;
1467 unsigned long flags;
1468 int res;
1469 /*
1470 * We need to protect against race, when tgt is freed before or
1471 * inside wake_up()
1472 */
726b8548 1473 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 1474 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
5d964837
QT		 1475 "tgt %p, sess_count=%d\n",
1476 tgt, tgt->sess_count);
2d70c103 1477 res = (tgt->sess_count == 0);
726b8548 1478 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103
NB		 1479
1480 return res;
1481}
1482
1483/* Called by tcm_qla2xxx configfs code */
3c231bda 1484int qlt_stop_phase1(struct qla_tgt *tgt)
2d70c103
NB		 1485{
1486 struct scsi_qla_host *vha = tgt->vha;
1487 struct qla_hw_data *ha = tgt->ha;
1488 unsigned long flags;
1489
b6faaaf7 1490 mutex_lock(&ha->optrom_mutex);
3c231bda 1491 mutex_lock(&qla_tgt_mutex);
b6faaaf7 1492
2d70c103
NB		 1493 if (tgt->tgt_stop || tgt->tgt_stopped) {
1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e,
1495 "Already in tgt->tgt_stop or tgt_stopped state\n");
3c231bda 1496 mutex_unlock(&qla_tgt_mutex);
b6faaaf7 1497 mutex_unlock(&ha->optrom_mutex);
3c231bda 1498 return -EPERM;
2d70c103
NB		 1499 }
1500
3a33dc95 1501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n",
2d70c103
NB		 1502 vha->host_no, vha);
1503 /*
1504 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted].
1505 * Lock is needed, because we still can get an incoming packet.
1506 */
0e8cd71c 1507 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103 1508 tgt->tgt_stop = 1;
c5701042 1509 qlt_clear_tgt_db(tgt);
0e8cd71c 1510 mutex_unlock(&vha->vha_tgt.tgt_mutex);
3c231bda 1511 mutex_unlock(&qla_tgt_mutex);
2d70c103 1512
2d70c103
NB		 1513 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
1514 "Waiting for sess works (tgt %p)", tgt);
1515 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1516 while (!list_empty(&tgt->sess_works_list)) {
1517 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1518 flush_scheduled_work();
1519 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1520 }
1521 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1522
1523 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
5d964837 1524 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count);
2d70c103 1525
b85e0957 1526 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
2d70c103
NB		 1527
1528 /* Big hammer */
ead03855
QT		 1529 if (!ha->flags.host_shutting_down &&
1530 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
2d70c103
NB		 1531 qlt_disable_vha(vha);
1532
1533 /* Wait for sessions to clear out (just in case) */
b85e0957 1534 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ);
b6faaaf7
QT		 1535 mutex_unlock(&ha->optrom_mutex);
1536
3c231bda 1537 return 0;
2d70c103
NB		 1538}
1539EXPORT_SYMBOL(qlt_stop_phase1);
1540
1541/* Called by tcm_qla2xxx configfs code */
1542void qlt_stop_phase2(struct qla_tgt *tgt)
1543{
3a33dc95 1544 scsi_qla_host_t *vha = tgt->vha;
2d70c103
NB		 1545
1546 if (tgt->tgt_stopped) {
0e8cd71c 1547 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f,
2d70c103
NB		 1548 "Already in tgt->tgt_stopped state\n");
1549 dump_stack();
1550 return;
1551 }
3a33dc95
QT		 1552 if (!tgt->tgt_stop) {
1553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b,
1554 "%s: phase1 stop is not completed\n", __func__);
1555 dump_stack();
1556 return;
1557 }
2d70c103 1558
0e8cd71c 1559 mutex_lock(&vha->vha_tgt.tgt_mutex);
2d70c103
NB		 1560 tgt->tgt_stop = 0;
1561 tgt->tgt_stopped = 1;
0e8cd71c 1562 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 1563
3a33dc95 1564 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n",
2d70c103 1565 tgt);
0645cb83
QT		 1566
1567 switch (vha->qlini_mode) {
1568 case QLA2XXX_INI_MODE_EXCLUSIVE:
1569 vha->flags.online = 1;
1570 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1571 break;
1572 default:
1573 break;
1574 }
2d70c103
NB		 1575}
1576EXPORT_SYMBOL(qlt_stop_phase2);
1577
1578/* Called from qlt_remove_target() -> qla2x00_remove_one() */
fa492630 1579static void qlt_release(struct qla_tgt *tgt)
2d70c103 1580{
0e8cd71c 1581 scsi_qla_host_t *vha = tgt->vha;
e326d22a
QT		 1582 void *node;
1583 u64 key = 0;
1584 u16 i;
1585 struct qla_qpair_hint *h;
bdbe24de 1586 struct qla_hw_data *ha = vha->hw;
2d70c103 1587
8b21900b 1588 if (!tgt->tgt_stop && !tgt->tgt_stopped)
3a33dc95
QT		 1589 qlt_stop_phase1(tgt);
1590
8b21900b 1591 if (!tgt->tgt_stopped)
2d70c103
NB		 1592 qlt_stop_phase2(tgt);
1593
e326d22a
QT		 1594 for (i = 0; i < vha->hw->max_qpairs + 1; i++) {
1595 unsigned long flags;
1596
1597 h = &tgt->qphints[i];
1598 if (h->qpair) {
1599 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags);
1600 list_del(&h->hint_elem);
1601 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags);
1602 h->qpair = NULL;
1603 }
1604 }
1605 kfree(tgt->qphints);
bdbe24de
QT		 1606 mutex_lock(&qla_tgt_mutex);
1607 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
1608 mutex_unlock(&qla_tgt_mutex);
e326d22a
QT		 1609
1610 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
1611 btree_remove64(&tgt->lun_qpair_map, key);
1612
1613 btree_destroy64(&tgt->lun_qpair_map);
1614
3be63b1e
SC		 1615 if (vha->vp_idx)
1616 if (ha->tgt.tgt_ops &&
1617 ha->tgt.tgt_ops->remove_target &&
1618 vha->vha_tgt.target_lport_ptr)
1619 ha->tgt.tgt_ops->remove_target(vha);
bdbe24de 1620
0e8cd71c 1621 vha->vha_tgt.qla_tgt = NULL;
2d70c103 1622
0e8cd71c 1623 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d,
2d70c103
NB		 1624 "Release of tgt %p finished\n", tgt);
1625
1626 kfree(tgt);
1627}
1628
1629/* ha->hardware_lock supposed to be held on entry */
1630static int qlt_sched_sess_work(struct qla_tgt *tgt, int type,
1631 const void *param, unsigned int param_size)
1632{
1633 struct qla_tgt_sess_work_param *prm;
1634 unsigned long flags;
1635
1636 prm = kzalloc(sizeof(*prm), GFP_ATOMIC);
1637 if (!prm) {
1638 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050,
1639 "qla_target(%d): Unable to create session "
1640 "work, command will be refused", 0);
1641 return -ENOMEM;
1642 }
1643
1644 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e,
1645 "Scheduling work (type %d, prm %p)"
1646 " to find session for param %p (size %d, tgt %p)\n",
1647 type, prm, param, param_size, tgt);
1648
1649 prm->type = type;
1650 memcpy(&prm->tm_iocb, param, param_size);
1651
1652 spin_lock_irqsave(&tgt->sess_work_lock, flags);
1653 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
1654 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
1655
1656 schedule_work(&tgt->sess_work);
1657
1658 return 0;
1659}
1660
1661/*
1662 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1663 */
82de802a 1664static void qlt_send_notify_ack(struct qla_qpair *qpair,
2d70c103
NB		 1665 struct imm_ntfy_from_isp *ntfy,
1666 uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
1667 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
1668{
82de802a 1669 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1670 struct qla_hw_data *ha = vha->hw;
1671 request_t *pkt;
1672 struct nack_to_isp *nack;
1673
ec7193e2
QT		 1674 if (!ha->flags.fw_started)
1675 return;
1676
2d70c103
NB		 1677 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
1678
82de802a 1679 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 1680 if (!pkt) {
1681 ql_dbg(ql_dbg_tgt, vha, 0xe049,
1682 "qla_target(%d): %s failed: unable to allocate "
1683 "request packet\n", vha->vp_idx, __func__);
1684 return;
1685 }
1686
0e8cd71c
SK		 1687 if (vha->vha_tgt.qla_tgt != NULL)
1688 vha->vha_tgt.qla_tgt->notify_ack_expected++;
2d70c103
NB		 1689
1690 pkt->entry_type = NOTIFY_ACK_TYPE;
1691 pkt->entry_count = 1;
1692
1693 nack = (struct nack_to_isp *)pkt;
1694 nack->ox_id = ntfy->ox_id;
1695
726b8548 1696 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1697 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
1698 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
1699 nack->u.isp24.flags = ntfy->u.isp24.flags &
7ffa5b93 1700 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
2d70c103
NB		 1701 }
1702 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
1703 nack->u.isp24.status = ntfy->u.isp24.status;
1704 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
aa230bc5 1705 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
2d70c103
NB		 1706 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
1707 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
1708 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
1709 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
1710 nack->u.isp24.srr_reject_code = srr_reject_code;
1711 nack->u.isp24.srr_reject_code_expl = srr_explan;
1712 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
1713
1714 ql_dbg(ql_dbg_tgt, vha, 0xe005,
1715 "qla_target(%d): Sending 24xx Notify Ack %d\n",
1716 vha->vp_idx, nack->u.isp24.status);
1717
63163e06
HM		 1718 /* Memory Barrier */
1719 wmb();
82de802a 1720 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1721}
1722
6b0431d6
QT		 1723static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd)
1724{
1725 struct scsi_qla_host *vha = mcmd->vha;
1726 struct qla_hw_data *ha = vha->hw;
1727 struct abts_resp_to_24xx *resp;
7ffa5b93
BVA		 1728 __le32 f_ctl;
1729 uint32_t h;
6b0431d6
QT		 1730 uint8_t *p;
1731 int rc;
1732 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts;
1733 struct qla_qpair *qpair = mcmd->qpair;
1734
1735 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1736 "Sending task mgmt ABTS response (ha=%p, status=%x)\n",
1737 ha, mcmd->fc_tm_rsp);
1738
1739 rc = qlt_check_reserve_free_req(qpair, 1);
1740 if (rc) {
1741 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1742 "qla_target(%d): %s failed: unable to allocate request packet\n",
1743 vha->vp_idx, __func__);
1744 return -EAGAIN;
1745 }
1746
1747 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr;
1748 memset(resp, 0, sizeof(*resp));
1749
1750 h = qlt_make_handle(qpair);
1751 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
1752 /*
1753 * CTIO type 7 from the firmware doesn't provide a way to
1754 * know the initiator's LOOP ID, hence we can't find
1755 * the session and, so, the command.
1756 */
1757 return -EAGAIN;
1758 } else {
1759 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd;
1760 }
1761
c25eb70a 1762 resp->handle = make_handle(qpair->req->id, h);
6b0431d6
QT		 1763 resp->entry_type = ABTS_RESP_24XX;
1764 resp->entry_count = 1;
1765 resp->nport_handle = abts->nport_handle;
1766 resp->vp_index = vha->vp_idx;
1767 resp->sof_type = abts->sof_type;
1768 resp->exchange_address = abts->exchange_address;
1769 resp->fcp_hdr_le = abts->fcp_hdr_le;
1770 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
1771 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1772 F_CTL_SEQ_INITIATIVE);
1773 p = (uint8_t *)&f_ctl;
1774 resp->fcp_hdr_le.f_ctl[0] = *p++;
1775 resp->fcp_hdr_le.f_ctl[1] = *p++;
1776 resp->fcp_hdr_le.f_ctl[2] = *p;
1777
df95f39a
BVA		 1778 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1779 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
6b0431d6
QT		 1780
1781 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1782 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) {
1783 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1784 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1785 resp->payload.ba_acct.low_seq_cnt = 0x0000;
7ffa5b93 1786 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
6b0431d6
QT		 1787 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1788 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1789 } else {
1790 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1791 resp->payload.ba_rjt.reason_code =
1792 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1793 /* Other bytes are zero */
1794 }
1795
1796 vha->vha_tgt.qla_tgt->abts_resp_expected++;
1797
1798 /* Memory Barrier */
1799 wmb();
1800 if (qpair->reqq_start_iocbs)
1801 qpair->reqq_start_iocbs(qpair);
1802 else
1803 qla2x00_start_iocbs(vha, qpair->req);
1804
1805 return rc;
1806}
1807
2d70c103
NB		 1808/*
1809 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1810 */
82de802a 1811static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair,
2d70c103
NB		 1812 struct abts_recv_from_24xx *abts, uint32_t status,
1813 bool ids_reversed)
1814{
82de802a 1815 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 1816 struct qla_hw_data *ha = vha->hw;
1817 struct abts_resp_to_24xx *resp;
7ffa5b93 1818 __le32 f_ctl;
2d70c103
NB		 1819 uint8_t *p;
1820
1821 ql_dbg(ql_dbg_tgt, vha, 0xe006,
1822 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n",
1823 ha, abts, status);
1824
82de802a
QT		 1825 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair,
1826 NULL);
2d70c103
NB		 1827 if (!resp) {
1828 ql_dbg(ql_dbg_tgt, vha, 0xe04a,
1829 "qla_target(%d): %s failed: unable to allocate "
1830 "request packet", vha->vp_idx, __func__);
1831 return;
1832 }
1833
1834 resp->entry_type = ABTS_RESP_24XX;
6b0431d6 1835 resp->handle = QLA_TGT_SKIP_HANDLE;
2d70c103
NB		 1836 resp->entry_count = 1;
1837 resp->nport_handle = abts->nport_handle;
1838 resp->vp_index = vha->vp_idx;
1839 resp->sof_type = abts->sof_type;
1840 resp->exchange_address = abts->exchange_address;
1841 resp->fcp_hdr_le = abts->fcp_hdr_le;
ad950360 1842 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP |
2d70c103
NB		 1843 F_CTL_LAST_SEQ | F_CTL_END_SEQ |
1844 F_CTL_SEQ_INITIATIVE);
1845 p = (uint8_t *)&f_ctl;
1846 resp->fcp_hdr_le.f_ctl[0] = *p++;
1847 resp->fcp_hdr_le.f_ctl[1] = *p++;
1848 resp->fcp_hdr_le.f_ctl[2] = *p;
1849 if (ids_reversed) {
df95f39a
BVA		 1850 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id;
1851 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id;
2d70c103 1852 } else {
df95f39a
BVA		 1853 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id;
1854 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id;
2d70c103
NB		 1855 }
1856 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort;
1857 if (status == FCP_TMF_CMPL) {
1858 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC;
1859 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID;
1860 resp->payload.ba_acct.low_seq_cnt = 0x0000;
7ffa5b93 1861 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF);
2d70c103
NB		 1862 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id;
1863 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id;
1864 } else {
1865 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT;
1866 resp->payload.ba_rjt.reason_code =
1867 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM;
1868 /* Other bytes are zero */
1869 }
1870
0e8cd71c 1871 vha->vha_tgt.qla_tgt->abts_resp_expected++;
2d70c103 1872
63163e06
HM		 1873 /* Memory Barrier */
1874 wmb();
8abfa9e2
QT		 1875 if (qpair->reqq_start_iocbs)
1876 qpair->reqq_start_iocbs(qpair);
1877 else
1878 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 1879}
1880
1881/*
1882 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
1883 */
1884static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
6b0431d6 1885 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd)
2d70c103
NB		 1886{
1887 struct ctio7_to_24xx *ctio;
0691094f 1888 u16 tmp;
6b0431d6 1889 struct abts_recv_from_24xx *entry;
2d70c103 1890
0691094f 1891 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 1892 if (ctio == NULL) {
1893 ql_dbg(ql_dbg_tgt, vha, 0xe04b,
1894 "qla_target(%d): %s failed: unable to allocate "
1895 "request packet\n", vha->vp_idx, __func__);
1896 return;
1897 }
1898
6b0431d6
QT		 1899 if (mcmd)
1900 /* abts from remote port */
1901 entry = &mcmd->orig_iocb.abts;
1902 else
1903 /* abts from this driver. */
1904 entry = (struct abts_recv_from_24xx *)pkt;
1905
2d70c103
NB		 1906 /*
1907 * We've got on entrance firmware's response on by us generated
1908 * ABTS response. So, in it ID fields are reversed.
1909 */
1910
1911 ctio->entry_type = CTIO_TYPE7;
1912 ctio->entry_count = 1;
1913 ctio->nport_handle = entry->nport_handle;
1914 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
ad950360 1915 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103 1916 ctio->vp_index = vha->vp_idx;
2d70c103 1917 ctio->exchange_addr = entry->exchange_addr_to_abort;
0691094f 1918 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
6b0431d6
QT		 1919
1920 if (mcmd) {
df95f39a 1921 ctio->initiator_id = entry->fcp_hdr_le.s_id;
6b0431d6
QT		 1922
1923 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID)
1924 tmp |= (mcmd->abort_io_attr << 9);
1925 else if (qpair->retry_term_cnt & 1)
1926 tmp |= (0x4 << 9);
1927 } else {
df95f39a 1928 ctio->initiator_id = entry->fcp_hdr_le.d_id;
6b0431d6
QT		 1929
1930 if (qpair->retry_term_cnt & 1)
1931 tmp |= (0x4 << 9);
1932 }
0691094f 1933 ctio->u.status1.flags = cpu_to_le16(tmp);
6b0431d6 1934 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
0691094f 1935
6b0431d6
QT		 1936 ql_dbg(ql_dbg_tgt, vha, 0xe007,
1937 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n",
1938 le16_to_cpu(ctio->u.status1.flags),
1939 le16_to_cpu(ctio->u.status1.ox_id),
1940 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0);
2d70c103 1941
63163e06
HM		 1942 /* Memory Barrier */
1943 wmb();
0691094f
QT		 1944 if (qpair->reqq_start_iocbs)
1945 qpair->reqq_start_iocbs(qpair);
1946 else
1947 qla2x00_start_iocbs(vha, qpair->req);
2d70c103 1948
6b0431d6
QT		 1949 if (mcmd)
1950 qlt_build_abts_resp_iocb(mcmd);
1951 else
1952 qlt_24xx_send_abts_resp(qpair,
1953 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true);
8b2f5ff3 1954
8b2f5ff3
SN		 1955}
1956
1957/* drop cmds for the given lun
1958 * XXX only looks for cmds on the port through which lun reset was recieved
1959 * XXX does not go through the list of other port (which may have cmds
1960 * for the same lun)
1961 */
df95f39a 1962static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id)
8b2f5ff3
SN		 1963{
1964 struct qla_tgt_sess_op *op;
1965 struct qla_tgt_cmd *cmd;
1966 uint32_t key;
8b631d87 1967 unsigned long flags;
8b2f5ff3
SN		 1968
1969 key = sid_to_key(s_id);
8b631d87 1970 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 1971 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
1972 uint32_t op_key;
f775bd14 1973 u64 op_lun;
8b2f5ff3
SN		 1974
1975 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1976 op_lun = scsilun_to_int(
1977 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1978 if (op_key == key && op_lun == lun)
1979 op->aborted = true;
1980 }
41dc529a
QT		 1981
1982 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
1983 uint32_t op_key;
1984 u64 op_lun;
1985
1986 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
1987 op_lun = scsilun_to_int(
1988 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
1989 if (op_key == key && op_lun == lun)
1990 op->aborted = true;
1991 }
1992
8b2f5ff3
SN		 1993 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
1994 uint32_t cmd_key;
f775bd14 1995 u64 cmd_lun;
8b2f5ff3
SN		 1996
1997 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
1998 cmd_lun = scsilun_to_int(
1999 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
2000 if (cmd_key == key && cmd_lun == lun)
193b50b9 2001 cmd->aborted = 1;
8b2f5ff3 2002 }
8b631d87 2003 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3
SN		 2004}
2005
84905dfe
QT		 2006static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha,
2007 uint64_t unpacked_lun)
2008{
2009 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2010 struct qla_qpair_hint *h = NULL;
2011
2012 if (vha->flags.qpairs_available) {
2013 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun);
2014 if (!h)
2015 h = &tgt->qphints[0];
2016 } else {
2017 h = &tgt->qphints[0];
2018 }
2019
2020 return h;
2021}
2022
2023static void qlt_do_tmr_work(struct work_struct *work)
2024{
2025 struct qla_tgt_mgmt_cmd *mcmd =
2026 container_of(work, struct qla_tgt_mgmt_cmd, work);
2027 struct qla_hw_data *ha = mcmd->vha->hw;
2028 int rc = EIO;
2029 uint32_t tag;
2030 unsigned long flags;
2031
2032 switch (mcmd->tmr_func) {
2033 case QLA_TGT_ABTS:
7ffa5b93 2034 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort);
84905dfe
QT		 2035 break;
2036 default:
2037 tag = 0;
2038 break;
2039 }
2040
2041 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun,
2042 mcmd->tmr_func, tag);
2043
2044 if (rc != 0) {
2045 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags);
2046 switch (mcmd->tmr_func) {
2047 case QLA_TGT_ABTS:
6b0431d6
QT		 2048 mcmd->fc_tm_rsp = FCP_TMF_REJECTED;
2049 qlt_build_abts_resp_iocb(mcmd);
84905dfe
QT		 2050 break;
2051 case QLA_TGT_LUN_RESET:
2052 case QLA_TGT_CLEAR_TS:
2053 case QLA_TGT_ABORT_TS:
2054 case QLA_TGT_CLEAR_ACA:
2055 case QLA_TGT_TARGET_RESET:
2056 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio,
2057 qla_sam_status);
2058 break;
2059
2060 case QLA_TGT_ABORT_ALL:
2061 case QLA_TGT_NEXUS_LOSS_SESS:
2062 case QLA_TGT_NEXUS_LOSS:
2063 qlt_send_notify_ack(mcmd->qpair,
2064 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
2065 break;
2066 }
2067 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags);
2068
2069 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052,
2070 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
2071 mcmd->vha->vp_idx, rc);
2072 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2073 }
2074}
2075
2d70c103
NB		 2076/* ha->hardware_lock supposed to be held on entry */
2077static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
5d964837 2078 struct abts_recv_from_24xx *abts, struct fc_port *sess)
2d70c103
NB		 2079{
2080 struct qla_hw_data *ha = vha->hw;
2081 struct qla_tgt_mgmt_cmd *mcmd;
84905dfe 2082 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
06e97b48 2083
2d70c103
NB		 2084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
2085 "qla_target(%d): task abort (tag=%d)\n",
2086 vha->vp_idx, abts->exchange_addr_to_abort);
2087
2088 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
2089 if (mcmd == NULL) {
2090 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051,
2091 "qla_target(%d): %s: Allocation of ABORT cmd failed",
2092 vha->vp_idx, __func__);
2093 return -ENOMEM;
2094 }
2095 memset(mcmd, 0, sizeof(*mcmd));
6b0431d6 2096 mcmd->cmd_type = TYPE_TGT_TMCMD;
2d70c103
NB		 2097 mcmd->sess = sess;
2098 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
7c3f8fd1 2099 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 2100 mcmd->tmr_func = QLA_TGT_ABTS;
84905dfe 2101 mcmd->qpair = h->qpair;
72fcd4eb 2102 mcmd->vha = vha;
2d70c103 2103
eb5ae233
NB		 2104 /*
2105 * LUN is looked up by target-core internally based on the passed
2106 * abts->exchange_addr_to_abort tag.
2107 */
84905dfe
QT		 2108 mcmd->se_cmd.cpuid = h->cpuid;
2109
2110 if (ha->tgt.tgt_ops->find_cmd_by_tag) {
2111 struct qla_tgt_cmd *abort_cmd;
2112
2113 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess,
7ffa5b93 2114 le32_to_cpu(abts->exchange_addr_to_abort));
84905dfe
QT		 2115 if (abort_cmd && abort_cmd->qpair) {
2116 mcmd->qpair = abort_cmd->qpair;
2117 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid;
6b0431d6
QT		 2118 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr;
2119 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID;
84905dfe 2120 }
2d70c103
NB		 2121 }
2122
84905dfe
QT		 2123 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
2124 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work);
2125
2d70c103
NB		 2126 return 0;
2127}
2128
2129/*
2130 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2131 */
2132static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
2133 struct abts_recv_from_24xx *abts)
2134{
2135 struct qla_hw_data *ha = vha->hw;
5d964837 2136 struct fc_port *sess;
7ffa5b93 2137 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort);
df95f39a 2138 be_id_t s_id;
2d70c103 2139 int rc;
7560151b 2140 unsigned long flags;
2d70c103
NB		 2141
2142 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
2143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053,
2144 "qla_target(%d): ABTS: Abort Sequence not "
2145 "supported\n", vha->vp_idx);
82de802a
QT		 2146 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2147 false);
2d70c103
NB		 2148 return;
2149 }
2150
2151 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
2152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010,
2153 "qla_target(%d): ABTS: Unknown Exchange "
2154 "Address received\n", vha->vp_idx);
82de802a
QT		 2155 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2156 false);
2d70c103
NB		 2157 return;
2158 }
2159
2160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011,
2161 "qla_target(%d): task abort (s_id=%x:%x:%x, "
df95f39a
BVA		 2162 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain,
2163 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag,
2d70c103
NB		 2164 le32_to_cpu(abts->fcp_hdr_le.parameter));
2165
df95f39a 2166 s_id = le_id_to_be(abts->fcp_hdr_le.s_id);
2d70c103 2167
7560151b 2168 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 2169 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2170 if (!sess) {
2171 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012,
03fea736 2172 "qla_target(%d): task abort for non-existent session\n",
2d70c103 2173 vha->vp_idx);
7560151b
QT		 2174 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2175
fb35265b
QT		 2176 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2177 false);
2d70c103
NB		 2178 return;
2179 }
7560151b
QT		 2180 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2181
2d70c103 2182
726b8548 2183 if (sess->deleted) {
82de802a
QT		 2184 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2185 false);
e52a8b45
AP		 2186 return;
2187 }
2188
2d70c103
NB		 2189 rc = __qlt_24xx_handle_abts(vha, abts, sess);
2190 if (rc != 0) {
2191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
2192 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n",
2193 vha->vp_idx, rc);
82de802a
QT		 2194 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED,
2195 false);
2d70c103
NB		 2196 return;
2197 }
2198}
2199
2200/*
2201 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2202 */
82de802a 2203static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair,
2d70c103
NB		 2204 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
2205{
72fcd4eb 2206 struct scsi_qla_host *ha = mcmd->vha;
2d70c103
NB		 2207 struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
2208 struct ctio7_to_24xx *ctio;
33a5fcee 2209 uint16_t temp;
2d70c103
NB		 2210
2211 ql_dbg(ql_dbg_tgt, ha, 0xe008,
2212 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
2213 ha, atio, resp_code);
2214
2d70c103 2215
82de802a 2216 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103
NB		 2217 if (ctio == NULL) {
2218 ql_dbg(ql_dbg_tgt, ha, 0xe04c,
2219 "qla_target(%d): %s failed: unable to allocate "
2220 "request packet\n", ha->vp_idx, __func__);
2221 return;
2222 }
2223
2224 ctio->entry_type = CTIO_TYPE7;
2225 ctio->entry_count = 1;
2226 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
7ffa5b93 2227 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id);
ad950360 2228 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103 2229 ctio->vp_index = ha->vp_idx;
df95f39a 2230 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2d70c103 2231 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2232 temp = (atio->u.isp24.attr << 9)|
2233 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2234 ctio->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 2235 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2236 ctio->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 2237 ctio->u.status1.scsi_status =
ad950360
BVA		 2238 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
2239 ctio->u.status1.response_len = cpu_to_le16(8);
e4b11b89 2240 ctio->u.status1.sense_data[0] = resp_code;
2d70c103 2241
63163e06
HM		 2242 /* Memory Barrier */
2243 wmb();
8abfa9e2
QT		 2244 if (qpair->reqq_start_iocbs)
2245 qpair->reqq_start_iocbs(qpair);
2246 else
2247 qla2x00_start_iocbs(ha, qpair->req);
2d70c103
NB		 2248}
2249
2250void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
2251{
2252 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
2253}
2254EXPORT_SYMBOL(qlt_free_mcmd);
2255
be25152c
QT		 2256/*
2257 * ha->hardware_lock supposed to be held on entry. Might drop it, then
2258 * reacquire
2259 */
8abfa9e2 2260void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c
QT		 2261 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
2262{
2263 struct atio_from_isp *atio = &cmd->atio;
2264 struct ctio7_to_24xx *ctio;
2265 uint16_t temp;
8abfa9e2 2266 struct scsi_qla_host *vha = cmd->vha;
be25152c
QT		 2267
2268 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
2269 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
2270 "sense_key=%02x, asc=%02x, ascq=%02x",
2271 vha, atio, scsi_status, sense_key, asc, ascq);
2272
2273 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
2274 if (!ctio) {
2275 ql_dbg(ql_dbg_async, vha, 0x3067,
2276 "qla2x00t(%ld): %s failed: unable to allocate request packet",
2277 vha->host_no, __func__);
2278 goto out;
2279 }
2280
2281 ctio->entry_type = CTIO_TYPE7;
2282 ctio->entry_count = 1;
2283 ctio->handle = QLA_TGT_SKIP_HANDLE;
7ffa5b93 2284 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id);
be25152c
QT		 2285 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2286 ctio->vp_index = vha->vp_idx;
df95f39a 2287 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
be25152c 2288 ctio->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2289 temp = (atio->u.isp24.attr << 9) |
2290 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS;
2291 ctio->u.status1.flags = cpu_to_le16(temp);
be25152c
QT		 2292 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2293 ctio->u.status1.ox_id = cpu_to_le16(temp);
2294 ctio->u.status1.scsi_status =
2295 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
2296 ctio->u.status1.response_len = cpu_to_le16(18);
2297 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
2298
2299 if (ctio->u.status1.residual != 0)
2300 ctio->u.status1.scsi_status |=
2301 cpu_to_le16(SS_RESIDUAL_UNDER);
2302
a861b492
BVA		 2303 /* Fixed format sense data. */
2304 ctio->u.status1.sense_data[0] = 0x70;
2305 ctio->u.status1.sense_data[2] = sense_key;
be25152c 2306 /* Additional sense length */
a861b492 2307 ctio->u.status1.sense_data[7] = 0xa;
be25152c 2308 /* ASC and ASCQ */
a861b492
BVA		 2309 ctio->u.status1.sense_data[12] = asc;
2310 ctio->u.status1.sense_data[13] = ascq;
be25152c
QT		 2311
2312 /* Memory Barrier */
2313 wmb();
2314
8abfa9e2
QT		 2315 if (qpair->reqq_start_iocbs)
2316 qpair->reqq_start_iocbs(qpair);
2317 else
2318 qla2x00_start_iocbs(vha, qpair->req);
2319
be25152c
QT		 2320out:
2321 return;
2322}
2323
2d70c103
NB		 2324/* callback from target fabric module code */
2325void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
2326{
2327 struct scsi_qla_host *vha = mcmd->sess->vha;
2328 struct qla_hw_data *ha = vha->hw;
2329 unsigned long flags;
82de802a 2330 struct qla_qpair *qpair = mcmd->qpair;
6b0431d6 2331 bool free_mcmd = true;
2d70c103
NB		 2332
2333 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013,
2334 "TM response mcmd (%p) status %#x state %#x",
2335 mcmd, mcmd->fc_tm_rsp, mcmd->flags);
2336
82de802a 2337 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
b6a029e1 2338
7c3f8fd1 2339 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) {
b6a029e1 2340 /*
3bb67df5 2341 * Either the port is not online or this request was from
b6a029e1
AE		 2342 * previous life, just abort the processing.
2343 */
2344 ql_dbg(ql_dbg_async, vha, 0xe100,
3bb67df5
DKU		 2345 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n",
2346 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 2347 mcmd->reset_count, qpair->chip_reset);
b6a029e1 2348 ha->tgt.tgt_ops->free_mcmd(mcmd);
82de802a 2349 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
b6a029e1
AE		 2350 return;
2351 }
2352
726b8548 2353 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) {
8837aa8b
BVA		 2354 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) {
2355 case ELS_LOGO:
2356 case ELS_PRLO:
2357 case ELS_TPRLO:
83548fe2 2358 ql_dbg(ql_dbg_disc, vha, 0x2106,
19ce192c 2359 "TM response logo %8phC status %#x state %#x",
726b8548
QT		 2360 mcmd->sess->port_name, mcmd->fc_tm_rsp,
2361 mcmd->flags);
d8630bb9 2362 qlt_schedule_sess_for_deletion(mcmd->sess);
8837aa8b
BVA		 2363 break;
2364 default:
82de802a
QT		 2365 qlt_send_notify_ack(vha->hw->base_qpair,
2366 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0);
8837aa8b 2367 break;
726b8548
QT		 2368 }
2369 } else {
6b0431d6
QT		 2370 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) {
2371 qlt_build_abts_resp_iocb(mcmd);
2372 free_mcmd = false;
2373 } else
82de802a 2374 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd,
2d70c103
NB		 2375 mcmd->fc_tm_rsp);
2376 }
2377 /*
2378 * Make the callback for ->free_mcmd() to queue_work() and invoke
2379 * target_put_sess_cmd() to drop cmd_kref to 1. The final
2380 * target_put_sess_cmd() call will be made from TFO->check_stop_free()
2381 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
2382 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
2383 * qlt_xmit_tm_rsp() returns here..
2384 */
6b0431d6
QT		 2385 if (free_mcmd)
2386 ha->tgt.tgt_ops->free_mcmd(mcmd);
2387
82de802a 2388 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 2389}
2390EXPORT_SYMBOL(qlt_xmit_tm_rsp);
2391
2392/* No locks */
2393static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
2394{
2395 struct qla_tgt_cmd *cmd = prm->cmd;
2396
2397 BUG_ON(cmd->sg_cnt == 0);
2398
2399 prm->sg = (struct scatterlist *)cmd->sg;
e7d0bb77 2400 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg,
2d70c103
NB		 2401 cmd->sg_cnt, cmd->dma_data_direction);
2402 if (unlikely(prm->seg_cnt == 0))
2403 goto out_err;
2404
2405 prm->cmd->sg_mapped = 1;
2406
f83adb61
QT		 2407 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) {
2408 /*
2409 * If greater than four sg entries then we need to allocate
2410 * the continuation entries
2411 */
b5399f7d 2412 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX)
f83adb61 2413 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
b5399f7d
QT		 2414 QLA_TGT_DATASEGS_PER_CMD_24XX,
2415 QLA_TGT_DATASEGS_PER_CONT_24XX);
f83adb61
QT		 2416 } else {
2417 /* DIF */
2418 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2419 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2420 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz);
2421 prm->tot_dsds = prm->seg_cnt;
2422 } else
2423 prm->tot_dsds = prm->seg_cnt;
2424
2425 if (cmd->prot_sg_cnt) {
2426 prm->prot_sg = cmd->prot_sg;
e7d0bb77 2427 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev,
f83adb61
QT		 2428 cmd->prot_sg, cmd->prot_sg_cnt,
2429 cmd->dma_data_direction);
2430 if (unlikely(prm->prot_seg_cnt == 0))
2431 goto out_err;
2432
2433 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) ||
2434 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) {
2435 /* Dif Bundling not support here */
2436 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen,
2437 cmd->blk_sz);
2438 prm->tot_dsds += prm->prot_seg_cnt;
2439 } else
2440 prm->tot_dsds += prm->prot_seg_cnt;
2441 }
2442 }
2d70c103 2443
2d70c103
NB		 2444 return 0;
2445
2446out_err:
22d84726 2447 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d,
2d70c103
NB		 2448 "qla_target(%d): PCI mapping failed: sg_cnt=%d",
2449 0, prm->cmd->sg_cnt);
2450 return -1;
2451}
2452
f9b6721a 2453static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
2d70c103 2454{
8abfa9e2
QT		 2455 struct qla_hw_data *ha;
2456 struct qla_qpair *qpair;
bd432bb5 2457
f9b6721a
JE		 2458 if (!cmd->sg_mapped)
2459 return;
2460
8abfa9e2
QT		 2461 qpair = cmd->qpair;
2462
e7d0bb77 2463 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt,
8abfa9e2 2464 cmd->dma_data_direction);
2d70c103 2465 cmd->sg_mapped = 0;
f83adb61
QT		 2466
2467 if (cmd->prot_sg_cnt)
e7d0bb77 2468 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt,
f83adb61
QT		 2469 cmd->dma_data_direction);
2470
d5ff0eed
JC		 2471 if (!cmd->ctx)
2472 return;
8abfa9e2 2473 ha = vha->hw;
f83adb61 2474 if (cmd->ctx_dsd_alloced)
d5ff0eed 2475 qla2x00_clean_dsd_pool(ha, cmd->ctx);
f83adb61 2476
d5ff0eed 2477 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma);
2d70c103
NB		 2478}
2479
82de802a 2480static int qlt_check_reserve_free_req(struct qla_qpair *qpair,
2d70c103
NB		 2481 uint32_t req_cnt)
2482{
d63b328f 2483 uint32_t cnt;
82de802a 2484 struct req_que *req = qpair->req;
2d70c103 2485
82de802a 2486 if (req->cnt < (req_cnt + 2)) {
af7bb382 2487 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr :
04474d3a 2488 rd_reg_dword_relaxed(req->req_q_out));
2d70c103 2489
82de802a
QT		 2490 if (req->ring_index < cnt)
2491 req->cnt = cnt - req->ring_index;
2d70c103 2492 else
82de802a 2493 req->cnt = req->length - (req->ring_index - cnt);
2d70c103 2494
82de802a 2495 if (unlikely(req->cnt < (req_cnt + 2)))
bc7095a9 2496 return -EAGAIN;
2d70c103 2497 }
bc7095a9 2498
82de802a 2499 req->cnt -= req_cnt;
2d70c103
NB		 2500
2501 return 0;
2502}
2503
2504/*
2505 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
2506 */
82de802a 2507static inline void *qlt_get_req_pkt(struct req_que *req)
2d70c103
NB		 2508{
2509 /* Adjust ring index. */
82de802a
QT		 2510 req->ring_index++;
2511 if (req->ring_index == req->length) {
2512 req->ring_index = 0;
2513 req->ring_ptr = req->ring;
2d70c103 2514 } else {
82de802a 2515 req->ring_ptr++;
2d70c103 2516 }
82de802a 2517 return (cont_entry_t *)req->ring_ptr;
2d70c103
NB		 2518}
2519
2520/* ha->hardware_lock supposed to be held on entry */
82de802a 2521static inline uint32_t qlt_make_handle(struct qla_qpair *qpair)
2d70c103 2522{
2d70c103 2523 uint32_t h;
c5419e26
QT		 2524 int index;
2525 uint8_t found = 0;
82de802a 2526 struct req_que *req = qpair->req;
c5419e26
QT		 2527
2528 h = req->current_outstanding_cmd;
2d70c103 2529
c5419e26
QT		 2530 for (index = 1; index < req->num_outstanding_cmds; index++) {
2531 h++;
2532 if (h == req->num_outstanding_cmds)
2533 h = 1;
2534
2535 if (h == QLA_TGT_SKIP_HANDLE)
2536 continue;
2537
2538 if (!req->outstanding_cmds[h]) {
2539 found = 1;
2d70c103
NB		 2540 break;
2541 }
c5419e26 2542 }
2d70c103 2543
c5419e26
QT		 2544 if (found) {
2545 req->current_outstanding_cmd = h;
2546 } else {
8abfa9e2
QT		 2547 ql_dbg(ql_dbg_io, qpair->vha, 0x305b,
2548 "qla_target(%d): Ran out of empty cmd slots\n",
2549 qpair->vha->vp_idx);
c5419e26
QT		 2550 h = QLA_TGT_NULL_HANDLE;
2551 }
2d70c103
NB		 2552
2553 return h;
2554}
2555
2556/* ha->hardware_lock supposed to be held on entry */
82de802a
QT		 2557static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair,
2558 struct qla_tgt_prm *prm)
2d70c103
NB		 2559{
2560 uint32_t h;
2561 struct ctio7_to_24xx *pkt;
2d70c103 2562 struct atio_from_isp *atio = &prm->cmd->atio;
33a5fcee 2563 uint16_t temp;
2d70c103 2564
82de802a 2565 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr;
2d70c103
NB		 2566 prm->pkt = pkt;
2567 memset(pkt, 0, sizeof(*pkt));
2568
2569 pkt->entry_type = CTIO_TYPE7;
2570 pkt->entry_count = (uint8_t)prm->req_cnt;
22d84726 2571 pkt->vp_index = prm->cmd->vp_idx;
2d70c103 2572
82de802a 2573 h = qlt_make_handle(qpair);
2d70c103
NB		 2574 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
2575 /*
2576 * CTIO type 7 from the firmware doesn't provide a way to
2577 * know the initiator's LOOP ID, hence we can't find
2578 * the session and, so, the command.
2579 */
2580 return -EAGAIN;
e326d22a
QT		 2581 } else
2582 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
2d70c103 2583
c25eb70a 2584 pkt->handle = make_handle(qpair->req->id, h);
82de802a
QT		 2585 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
2586 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 2587 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
df95f39a 2588 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2d70c103 2589 pkt->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 2590 temp = atio->u.isp24.attr << 9;
2591 pkt->u.status0.flags |= cpu_to_le16(temp);
33a5fcee
QT		 2592 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
2593 pkt->u.status0.ox_id = cpu_to_le16(temp);
2d70c103
NB		 2594 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
2595
2d70c103
NB		 2596 return 0;
2597}
2598
2599/*
2600 * ha->hardware_lock supposed to be held on entry. We have already made sure
2601 * that there is sufficient amount of request entries to not drop it.
2602 */
32d29b4c 2603static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2604{
2605 int cnt;
15b7a68c 2606 struct dsd64 *cur_dsd;
2d70c103
NB		 2607
2608 /* Build continuation packets */
2609 while (prm->seg_cnt > 0) {
2610 cont_a64_entry_t *cont_pkt64 =
82de802a
QT		 2611 (cont_a64_entry_t *)qlt_get_req_pkt(
2612 prm->cmd->qpair->req);
2d70c103
NB		 2613
2614 /*
2615 * Make sure that from cont_pkt64 none of
2616 * 64-bit specific fields used for 32-bit
2617 * addressing. Cast to (cont_entry_t *) for
2618 * that.
2619 */
2620
2621 memset(cont_pkt64, 0, sizeof(*cont_pkt64));
2622
2623 cont_pkt64->entry_count = 1;
2624 cont_pkt64->sys_define = 0;
2625
32d29b4c 2626 cont_pkt64->entry_type = CONTINUE_A64_TYPE;
15b7a68c 2627 cur_dsd = cont_pkt64->dsd;
2d70c103
NB		 2628
2629 /* Load continuation entry data segments */
2630 for (cnt = 0;
b5399f7d 2631 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt;
2d70c103 2632 cnt++, prm->seg_cnt--) {
15b7a68c 2633 append_dsd64(&cur_dsd, prm->sg);
2d70c103
NB		 2634 prm->sg = sg_next(prm->sg);
2635 }
2636 }
2637}
2638
2639/*
2640 * ha->hardware_lock supposed to be held on entry. We have already made sure
2641 * that there is sufficient amount of request entries to not drop it.
2642 */
32d29b4c 2643static void qlt_load_data_segments(struct qla_tgt_prm *prm)
2d70c103
NB		 2644{
2645 int cnt;
15b7a68c 2646 struct dsd64 *cur_dsd;
2d70c103
NB		 2647 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
2648
2d70c103
NB		 2649 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
2650
2651 /* Setup packet address segment pointer */
15b7a68c 2652 cur_dsd = &pkt24->u.status0.dsd;
2d70c103
NB		 2653
2654 /* Set total data segment count */
2655 if (prm->seg_cnt)
2656 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
2657
2658 if (prm->seg_cnt == 0) {
2659 /* No data transfer */
15b7a68c
BVA		 2660 cur_dsd->address = 0;
2661 cur_dsd->length = 0;
2d70c103
NB		 2662 return;
2663 }
2664
2665 /* If scatter gather */
2d70c103
NB		 2666
2667 /* Load command entry data segments */
2668 for (cnt = 0;
b5399f7d 2669 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt;
2d70c103 2670 cnt++, prm->seg_cnt--) {
15b7a68c 2671 append_dsd64(&cur_dsd, prm->sg);
2d70c103
NB		 2672 prm->sg = sg_next(prm->sg);
2673 }
2674
32d29b4c 2675 qlt_load_cont_data_segments(prm);
2d70c103
NB		 2676}
2677
2678static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
2679{
2680 return cmd->bufflen > 0;
2681}
2682
be25152c
QT		 2683static void qlt_print_dif_err(struct qla_tgt_prm *prm)
2684{
2685 struct qla_tgt_cmd *cmd;
2686 struct scsi_qla_host *vha;
2687
2688 /* asc 0x10=dif error */
2689 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
2690 cmd = prm->cmd;
2691 vha = cmd->vha;
2692 /* ASCQ */
2693 switch (prm->sense_buffer[13]) {
2694 case 1:
83548fe2 2695 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b,
be25152c
QT		 2696 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2697 "se_cmd=%p tag[%x]",
2698 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2699 cmd->atio.u.isp24.exchange_addr);
2700 break;
2701 case 2:
83548fe2 2702 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c,
be25152c
QT		 2703 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2704 "se_cmd=%p tag[%x]",
2705 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2706 cmd->atio.u.isp24.exchange_addr);
2707 break;
2708 case 3:
83548fe2 2709 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f,
be25152c
QT		 2710 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
2711 "se_cmd=%p tag[%x]",
2712 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2713 cmd->atio.u.isp24.exchange_addr);
2714 break;
2715 default:
83548fe2 2716 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010,
be25152c
QT		 2717 "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
2718 "se_cmd=%p tag[%x]",
2719 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
2720 cmd->atio.u.isp24.exchange_addr);
2721 break;
2722 }
83548fe2 2723 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16);
be25152c
QT		 2724 }
2725}
2726
2d70c103
NB		 2727/*
2728 * Called without ha->hardware_lock held
2729 */
2730static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
2731 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status,
2732 uint32_t *full_req_cnt)
2733{
2d70c103 2734 struct se_cmd *se_cmd = &cmd->se_cmd;
22d84726 2735 struct qla_qpair *qpair = cmd->qpair;
2d70c103 2736
2d70c103 2737 prm->cmd = cmd;
7c3f8fd1
QT		 2738 prm->tgt = cmd->tgt;
2739 prm->pkt = NULL;
2d70c103
NB		 2740 prm->rq_result = scsi_status;
2741 prm->sense_buffer = &cmd->sense_buffer[0];
2742 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
2743 prm->sg = NULL;
2744 prm->seg_cnt = -1;
2745 prm->req_cnt = 1;
7c3f8fd1 2746 prm->residual = 0;
2d70c103 2747 prm->add_status_pkt = 0;
7c3f8fd1
QT		 2748 prm->prot_sg = NULL;
2749 prm->prot_seg_cnt = 0;
2750 prm->tot_dsds = 0;
2d70c103 2751
2d70c103
NB		 2752 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
2753 if (qlt_pci_map_calc_cnt(prm) != 0)
2754 return -EAGAIN;
2755 }
2756
2757 *full_req_cnt = prm->req_cnt;
2758
2759 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
2760 prm->residual = se_cmd->residual_count;
22d84726 2761 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c,
649ee054
BVA		 2762 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2763 prm->residual, se_cmd->tag,
2764 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
2765 cmd->bufflen, prm->rq_result);
2d70c103
NB		 2766 prm->rq_result |= SS_RESIDUAL_UNDER;
2767 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
2768 prm->residual = se_cmd->residual_count;
22d84726 2769 ql_dbg_qp(ql_dbg_io, qpair, 0x305d,
649ee054
BVA		 2770 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n",
2771 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ?
2772 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result);
2d70c103
NB		 2773 prm->rq_result |= SS_RESIDUAL_OVER;
2774 }
2775
2776 if (xmit_type & QLA_TGT_XMIT_STATUS) {
2777 /*
2778 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be
2779 * ignored in *xmit_response() below
2780 */
2781 if (qlt_has_data(cmd)) {
2782 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) ||
7c3f8fd1 2783 (IS_FWI2_CAPABLE(cmd->vha->hw) &&
2d70c103
NB		 2784 (prm->rq_result != 0))) {
2785 prm->add_status_pkt = 1;
2786 (*full_req_cnt)++;
2787 }
2788 }
2789 }
2790
2d70c103
NB		 2791 return 0;
2792}
2793
7c3f8fd1
QT		 2794static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd,
2795 int sending_sense)
2d70c103 2796{
7c3f8fd1 2797 if (cmd->qpair->enable_class_2)
2d70c103
NB		 2798 return 0;
2799
2800 if (sending_sense)
2801 return cmd->conf_compl_supported;
2802 else
7c3f8fd1
QT		 2803 return cmd->qpair->enable_explicit_conf &&
2804 cmd->conf_compl_supported;
2d70c103
NB		 2805}
2806
2d70c103
NB		 2807static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio,
2808 struct qla_tgt_prm *prm)
2809{
2810 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len,
2811 (uint32_t)sizeof(ctio->u.status1.sense_data));
ad950360 2812 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 2813 if (qlt_need_explicit_conf(prm->cmd, 0)) {
ad950360 2814 ctio->u.status0.flags |= cpu_to_le16(
2d70c103
NB		 2815 CTIO7_FLAGS_EXPLICIT_CONFORM |
2816 CTIO7_FLAGS_CONFORM_REQ);
2817 }
2818 ctio->u.status0.residual = cpu_to_le32(prm->residual);
2819 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
2820 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
2821 int i;
2822
7c3f8fd1 2823 if (qlt_need_explicit_conf(prm->cmd, 1)) {
df2e32c5 2824 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) {
22d84726 2825 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017,
2d70c103
NB		 2826 "Skipping EXPLICIT_CONFORM and "
2827 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ "
2828 "non GOOD status\n");
2829 goto skip_explict_conf;
2830 }
ad950360 2831 ctio->u.status1.flags |= cpu_to_le16(
2d70c103
NB		 2832 CTIO7_FLAGS_EXPLICIT_CONFORM |
2833 CTIO7_FLAGS_CONFORM_REQ);
2834 }
2835skip_explict_conf:
2836 ctio->u.status1.flags &=
ad950360 2837 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2838 ctio->u.status1.flags |=
ad950360 2839 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103 2840 ctio->u.status1.scsi_status |=
ad950360 2841 cpu_to_le16(SS_SENSE_LEN_VALID);
2d70c103
NB		 2842 ctio->u.status1.sense_length =
2843 cpu_to_le16(prm->sense_buffer_len);
7ffa5b93
BVA		 2844 for (i = 0; i < prm->sense_buffer_len/4; i++) {
2845 uint32_t v;
be25152c 2846
7ffa5b93
BVA		 2847 v = get_unaligned_be32(
2848 &((uint32_t *)prm->sense_buffer)[i]);
2849 put_unaligned_le32(v,
2850 &((uint32_t *)ctio->u.status1.sense_data)[i]);
2851 }
be25152c
QT		 2852 qlt_print_dif_err(prm);
2853
2d70c103
NB		 2854 } else {
2855 ctio->u.status1.flags &=
ad950360 2856 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
2d70c103 2857 ctio->u.status1.flags |=
ad950360 2858 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
2d70c103
NB		 2859 ctio->u.status1.sense_length = 0;
2860 memset(ctio->u.status1.sense_data, 0,
2861 sizeof(ctio->u.status1.sense_data));
2862 }
2863
2864 /* Sense with len > 24, is it possible ??? */
2865}
2866
f83adb61
QT		 2867static inline int
2868qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
2869{
f83adb61
QT		 2870 switch (se_cmd->prot_op) {
2871 case TARGET_PROT_DOUT_INSERT:
2872 case TARGET_PROT_DIN_STRIP:
2873 if (ql2xenablehba_err_chk >= 1)
2874 return 1;
2875 break;
2876 case TARGET_PROT_DOUT_PASS:
2877 case TARGET_PROT_DIN_PASS:
2878 if (ql2xenablehba_err_chk >= 2)
2879 return 1;
2880 break;
2881 case TARGET_PROT_DIN_INSERT:
2882 case TARGET_PROT_DOUT_STRIP:
2883 return 1;
2884 default:
2885 break;
2886 }
2887 return 0;
2888}
2889
be25152c
QT		 2890static inline int
2891qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
2892{
2893 switch (se_cmd->prot_op) {
2894 case TARGET_PROT_DIN_INSERT:
2895 case TARGET_PROT_DOUT_INSERT:
2896 case TARGET_PROT_DIN_STRIP:
2897 case TARGET_PROT_DOUT_STRIP:
2898 case TARGET_PROT_DIN_PASS:
2899 case TARGET_PROT_DOUT_PASS:
2900 return 1;
2901 default:
2902 return 0;
2903 }
2904 return 0;
2905}
2906
f83adb61 2907/*
be25152c 2908 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
f83adb61 2909 */
be25152c
QT		 2910static void
2911qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
2912 uint16_t *pfw_prot_opts)
f83adb61 2913{
be25152c 2914 struct se_cmd *se_cmd = &cmd->se_cmd;
f83adb61 2915 uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
be25152c
QT		 2916 scsi_qla_host_t *vha = cmd->tgt->vha;
2917 struct qla_hw_data *ha = vha->hw;
2918 uint32_t t32 = 0;
f83adb61 2919
be25152c
QT		 2920 /*
2921 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
f83adb61
QT		 2922 * have been immplemented by TCM, before AppTag is avail.
2923 * Look for modesense_handlers[]
2924 */
c7ee3bd4 2925 ctx->app_tag = 0;
f83adb61
QT		 2926 ctx->app_tag_mask[0] = 0x0;
2927 ctx->app_tag_mask[1] = 0x0;
2928
be25152c
QT		 2929 if (IS_PI_UNINIT_CAPABLE(ha)) {
2930 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
2931 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
2932 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
2933 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
2934 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
2935 }
2936
2937 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
2938
f83adb61
QT		 2939 switch (se_cmd->prot_type) {
2940 case TARGET_DIF_TYPE0_PROT:
2941 /*
be25152c
QT		 2942 * No check for ql2xenablehba_err_chk, as it
2943 * would be an I/O error if hba tag generation
2944 * is not done.
f83adb61
QT		 2945 */
2946 ctx->ref_tag = cpu_to_le32(lba);
f83adb61
QT		 2947 /* enable ALL bytes of the ref tag */
2948 ctx->ref_tag_mask[0] = 0xff;
2949 ctx->ref_tag_mask[1] = 0xff;
2950 ctx->ref_tag_mask[2] = 0xff;
2951 ctx->ref_tag_mask[3] = 0xff;
2952 break;
f83adb61 2953 case TARGET_DIF_TYPE1_PROT:
be25152c
QT		 2954 /*
2955 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
2956 * REF tag, and 16 bit app tag.
2957 */
2958 ctx->ref_tag = cpu_to_le32(lba);
2959 if (!qla_tgt_ref_mask_check(se_cmd) ||
2960 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2961 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2962 break;
2963 }
2964 /* enable ALL bytes of the ref tag */
2965 ctx->ref_tag_mask[0] = 0xff;
2966 ctx->ref_tag_mask[1] = 0xff;
2967 ctx->ref_tag_mask[2] = 0xff;
2968 ctx->ref_tag_mask[3] = 0xff;
2969 break;
f83adb61 2970 case TARGET_DIF_TYPE2_PROT:
be25152c
QT		 2971 /*
2972 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
2973 * tag has to match LBA in CDB + N
2974 */
2975 ctx->ref_tag = cpu_to_le32(lba);
2976 if (!qla_tgt_ref_mask_check(se_cmd) ||
2977 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
2978 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2979 break;
2980 }
2981 /* enable ALL bytes of the ref tag */
2982 ctx->ref_tag_mask[0] = 0xff;
2983 ctx->ref_tag_mask[1] = 0xff;
2984 ctx->ref_tag_mask[2] = 0xff;
2985 ctx->ref_tag_mask[3] = 0xff;
2986 break;
f83adb61 2987 case TARGET_DIF_TYPE3_PROT:
be25152c
QT		 2988 /* For TYPE 3 protection: 16 bit GUARD only */
2989 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
2990 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
2991 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
2992 break;
f83adb61
QT		 2993 }
2994}
2995
f83adb61 2996static inline int
82de802a 2997qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm)
f83adb61 2998{
15b7a68c 2999 struct dsd64 *cur_dsd;
f83adb61
QT		 3000 uint32_t transfer_length = 0;
3001 uint32_t data_bytes;
3002 uint32_t dif_bytes;
3003 uint8_t bundling = 1;
f83adb61
QT		 3004 struct crc_context *crc_ctx_pkt = NULL;
3005 struct qla_hw_data *ha;
3006 struct ctio_crc2_to_fw *pkt;
3007 dma_addr_t crc_ctx_dma;
3008 uint16_t fw_prot_opts = 0;
3009 struct qla_tgt_cmd *cmd = prm->cmd;
3010 struct se_cmd *se_cmd = &cmd->se_cmd;
3011 uint32_t h;
3012 struct atio_from_isp *atio = &prm->cmd->atio;
be25152c 3013 struct qla_tc_param tc;
c7ee3bd4 3014 uint16_t t16;
82de802a 3015 scsi_qla_host_t *vha = cmd->vha;
f83adb61 3016
f83adb61
QT		 3017 ha = vha->hw;
3018
82de802a 3019 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr;
f83adb61
QT		 3020 prm->pkt = pkt;
3021 memset(pkt, 0, sizeof(*pkt));
3022
22d84726 3023 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071,
f83adb61 3024 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n",
22d84726 3025 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op,
f83adb61
QT		 3026 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba);
3027
3028 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) ||
3029 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP))
3030 bundling = 0;
3031
3032 /* Compute dif len and adjust data len to incude protection */
3033 data_bytes = cmd->bufflen;
3034 dif_bytes = (data_bytes / cmd->blk_sz) * 8;
3035
3036 switch (se_cmd->prot_op) {
3037 case TARGET_PROT_DIN_INSERT:
3038 case TARGET_PROT_DOUT_STRIP:
3039 transfer_length = data_bytes;
be25152c
QT		 3040 if (cmd->prot_sg_cnt)
3041 data_bytes += dif_bytes;
f83adb61 3042 break;
f83adb61
QT		 3043 case TARGET_PROT_DIN_STRIP:
3044 case TARGET_PROT_DOUT_INSERT:
3045 case TARGET_PROT_DIN_PASS:
3046 case TARGET_PROT_DOUT_PASS:
3047 transfer_length = data_bytes + dif_bytes;
3048 break;
f83adb61
QT		 3049 default:
3050 BUG();
3051 break;
3052 }
3053
3054 if (!qlt_hba_err_chk_enabled(se_cmd))
3055 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
3056 /* HBA error checking enabled */
3057 else if (IS_PI_UNINIT_CAPABLE(ha)) {
3058 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
3059 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
3060 fw_prot_opts |= PO_DIS_VALD_APP_ESC;
3061 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
3062 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
3063 }
3064
3065 switch (se_cmd->prot_op) {
3066 case TARGET_PROT_DIN_INSERT:
3067 case TARGET_PROT_DOUT_INSERT:
3068 fw_prot_opts |= PO_MODE_DIF_INSERT;
3069 break;
3070 case TARGET_PROT_DIN_STRIP:
3071 case TARGET_PROT_DOUT_STRIP:
3072 fw_prot_opts |= PO_MODE_DIF_REMOVE;
3073 break;
3074 case TARGET_PROT_DIN_PASS:
3075 case TARGET_PROT_DOUT_PASS:
3076 fw_prot_opts |= PO_MODE_DIF_PASS;
3077 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */
3078 break;
3079 default:/* Normal Request */
3080 fw_prot_opts |= PO_MODE_DIF_PASS;
3081 break;
3082 }
3083
f83adb61
QT		 3084 /* ---- PKT ---- */
3085 /* Update entry type to indicate Command Type CRC_2 IOCB */
3086 pkt->entry_type = CTIO_CRC2;
3087 pkt->entry_count = 1;
22d84726 3088 pkt->vp_index = cmd->vp_idx;
f83adb61 3089
82de802a 3090 h = qlt_make_handle(qpair);
f83adb61
QT		 3091 if (unlikely(h == QLA_TGT_NULL_HANDLE)) {
3092 /*
3093 * CTIO type 7 from the firmware doesn't provide a way to
3094 * know the initiator's LOOP ID, hence we can't find
3095 * the session and, so, the command.
3096 */
3097 return -EAGAIN;
3098 } else
82de802a 3099 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd;
f83adb61 3100
c25eb70a 3101 pkt->handle = make_handle(qpair->req->id, h);
82de802a 3102 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK;
be25152c 3103 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
ad950360 3104 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
df95f39a 3105 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
f83adb61 3106 pkt->exchange_addr = atio->u.isp24.exchange_addr;
c7ee3bd4
QT		 3107
3108 /* silence compile warning */
3109 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3110 pkt->ox_id = cpu_to_le16(t16);
3111
3112 t16 = (atio->u.isp24.attr << 9);
3113 pkt->flags |= cpu_to_le16(t16);
f83adb61
QT		 3114 pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
3115
3116 /* Set transfer direction */
3117 if (cmd->dma_data_direction == DMA_TO_DEVICE)
ad950360 3118 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN);
f83adb61 3119 else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
ad950360 3120 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
f83adb61 3121
7ffa5b93 3122 pkt->dseg_count = cpu_to_le16(prm->tot_dsds);
f83adb61
QT		 3123 /* Fibre channel byte count */
3124 pkt->transfer_length = cpu_to_le32(transfer_length);
3125
f83adb61
QT		 3126 /* ----- CRC context -------- */
3127
3128 /* Allocate CRC context from global pool */
3129 crc_ctx_pkt = cmd->ctx =
501017f6 3130 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
f83adb61
QT		 3131
3132 if (!crc_ctx_pkt)
3133 goto crc_queuing_error;
3134
f83adb61
QT		 3135 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
3136 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
3137
3138 /* Set handle */
3139 crc_ctx_pkt->handle = pkt->handle;
3140
be25152c 3141 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
f83adb61 3142
d4556a49 3143 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address);
7ffa5b93 3144 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW);
f83adb61 3145
f83adb61 3146 if (!bundling) {
9e75b5e2 3147 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0];
f83adb61
QT		 3148 } else {
3149 /*
3150 * Configure Bundling if we need to fetch interlaving
3151 * protection PCI accesses
3152 */
3153 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
3154 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
3155 crc_ctx_pkt->u.bundling.dseg_count =
3156 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt);
9e75b5e2 3157 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0];
f83adb61
QT		 3158 }
3159
3160 /* Finish the common fields of CRC pkt */
3161 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz);
3162 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
3163 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
ad950360 3164 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
f83adb61 3165
be25152c
QT		 3166 memset((uint8_t *)&tc, 0 , sizeof(tc));
3167 tc.vha = vha;
3168 tc.blk_sz = cmd->blk_sz;
3169 tc.bufflen = cmd->bufflen;
3170 tc.sg = cmd->sg;
3171 tc.prot_sg = cmd->prot_sg;
3172 tc.ctx = crc_ctx_pkt;
3173 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
f83adb61
QT		 3174
3175 /* Walks data segments */
ad950360 3176 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
f83adb61
QT		 3177
3178 if (!bundling && prm->prot_seg_cnt) {
3179 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
be25152c 3180 prm->tot_dsds, &tc))
f83adb61
QT		 3181 goto crc_queuing_error;
3182 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
be25152c 3183 (prm->tot_dsds - prm->prot_seg_cnt), &tc))
f83adb61
QT		 3184 goto crc_queuing_error;
3185
3186 if (bundling && prm->prot_seg_cnt) {
3187 /* Walks dif segments */
c7ee3bd4 3188 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA;
f83adb61 3189
15b7a68c 3190 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd;
f83adb61 3191 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
50b81275 3192 prm->prot_seg_cnt, cmd))
f83adb61
QT		 3193 goto crc_queuing_error;
3194 }
3195 return QLA_SUCCESS;
3196
3197crc_queuing_error:
3198 /* Cleanup will be performed by the caller */
82de802a 3199 qpair->req->outstanding_cmds[h] = NULL;
f83adb61
QT		 3200
3201 return QLA_FUNCTION_FAILED;
3202}
3203
2d70c103
NB		 3204/*
3205 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
3206 * QLA_TGT_XMIT_STATUS for >= 24xx silicon
3207 */
3208int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
3209 uint8_t scsi_status)
3210{
3211 struct scsi_qla_host *vha = cmd->vha;
82de802a 3212 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3213 struct ctio7_to_24xx *pkt;
3214 struct qla_tgt_prm prm;
3215 uint32_t full_req_cnt = 0;
3216 unsigned long flags = 0;
3217 int res;
3218
51fd6e63
QT		 3219 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
3220 (cmd->sess && cmd->sess->deleted)) {
a6ca8878 3221 cmd->state = QLA_TGT_STATE_PROCESSED;
0dcec41a
BVA		 3222 res = 0;
3223 goto free;
a6ca8878 3224 }
a6ca8878 3225
22d84726 3226 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018,
82de802a 3227 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n",
f83adb61
QT		 3228 (xmit_type & QLA_TGT_XMIT_STATUS) ?
3229 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction,
82de802a 3230 &cmd->se_cmd, qpair->id);
2d70c103
NB		 3231
3232 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
3233 &full_req_cnt);
0dcec41a
BVA		 3234 if (unlikely(res != 0))
3235 goto free;
2d70c103 3236
82de802a 3237 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3238
ce1025cd 3239 if (xmit_type == QLA_TGT_XMIT_STATUS)
60a9eadb 3240 qpair->tgt_counters.core_qla_snd_status++;
ce1025cd 3241 else
60a9eadb 3242 qpair->tgt_counters.core_qla_que_buf++;
ce1025cd 3243
7c3f8fd1 3244 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) {
b6a029e1 3245 /*
3bb67df5 3246 * Either the port is not online or this request was from
b6a029e1
AE		 3247 * previous life, just abort the processing.
3248 */
3249 cmd->state = QLA_TGT_STATE_PROCESSED;
22d84726 3250 ql_dbg_qp(ql_dbg_async, qpair, 0xe101,
3bb67df5
DKU		 3251 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
3252 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3253 cmd->reset_count, qpair->chip_reset);
82de802a 3254 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
0dcec41a
BVA		 3255 res = 0;
3256 goto free;
b6a029e1
AE		 3257 }
3258
2d70c103 3259 /* Does F/W have an IOCBs for this request */
82de802a 3260 res = qlt_check_reserve_free_req(qpair, full_req_cnt);
2d70c103
NB		 3261 if (unlikely(res))
3262 goto out_unmap_unlock;
3263
f83adb61 3264 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA))
82de802a 3265 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3266 else
82de802a 3267 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
810e30bc 3268 if (unlikely(res != 0)) {
82de802a 3269 qpair->req->cnt += full_req_cnt;
2d70c103 3270 goto out_unmap_unlock;
810e30bc 3271 }
2d70c103
NB		 3272
3273 pkt = (struct ctio7_to_24xx *)prm.pkt;
3274
3275 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
3276 pkt->u.status0.flags |=
ad950360 3277 cpu_to_le16(CTIO7_FLAGS_DATA_IN |
2d70c103
NB		 3278 CTIO7_FLAGS_STATUS_MODE_0);
3279
f83adb61 3280 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3281 qlt_load_data_segments(&prm);
2d70c103
NB		 3282
3283 if (prm.add_status_pkt == 0) {
3284 if (xmit_type & QLA_TGT_XMIT_STATUS) {
3285 pkt->u.status0.scsi_status =
3286 cpu_to_le16(prm.rq_result);
3287 pkt->u.status0.residual =
3288 cpu_to_le32(prm.residual);
ad950360 3289 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3290 CTIO7_FLAGS_SEND_STATUS);
7c3f8fd1 3291 if (qlt_need_explicit_conf(cmd, 0)) {
2d70c103 3292 pkt->u.status0.flags |=
ad950360 3293 cpu_to_le16(
2d70c103
NB		 3294 CTIO7_FLAGS_EXPLICIT_CONFORM |
3295 CTIO7_FLAGS_CONFORM_REQ);
3296 }
3297 }
3298
3299 } else {
3300 /*
3301 * We have already made sure that there is sufficient
3302 * amount of request entries to not drop HW lock in
3303 * req_pkt().
3304 */
3305 struct ctio7_to_24xx *ctio =
82de802a
QT		 3306 (struct ctio7_to_24xx *)qlt_get_req_pkt(
3307 qpair->req);
2d70c103 3308
22d84726 3309 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e,
667024a3
AE		 3310 "Building additional status packet 0x%p.\n",
3311 ctio);
2d70c103 3312
f83adb61
QT		 3313 /*
3314 * T10Dif: ctio_crc2_to_fw overlay ontop of
3315 * ctio7_to_24xx
3316 */
2d70c103 3317 memcpy(ctio, pkt, sizeof(*ctio));
f83adb61 3318 /* reset back to CTIO7 */
2d70c103 3319 ctio->entry_count = 1;
f83adb61 3320 ctio->entry_type = CTIO_TYPE7;
2d70c103 3321 ctio->dseg_count = 0;
ad950360 3322 ctio->u.status1.flags &= ~cpu_to_le16(
2d70c103
NB		 3323 CTIO7_FLAGS_DATA_IN);
3324
3325 /* Real finish is ctio_m1's finish */
3326 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
ad950360 3327 pkt->u.status0.flags |= cpu_to_le16(
2d70c103 3328 CTIO7_FLAGS_DONT_RET_CTIO);
f83adb61
QT		 3329
3330 /* qlt_24xx_init_ctio_to_isp will correct
3331 * all neccessary fields that's part of CTIO7.
3332 * There should be no residual of CTIO-CRC2 data.
3333 */
2d70c103
NB		 3334 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
3335 &prm);
2d70c103
NB		 3336 }
3337 } else
3338 qlt_24xx_init_ctio_to_isp(pkt, &prm);
3339
3340
3341 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
d564a372 3342 cmd->cmd_sent_to_fw = 1;
079a3a3b 3343 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
2d70c103 3344
63163e06
HM		 3345 /* Memory Barrier */
3346 wmb();
8abfa9e2
QT		 3347 if (qpair->reqq_start_iocbs)
3348 qpair->reqq_start_iocbs(qpair);
3349 else
3350 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3351 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3352
3353 return 0;
3354
3355out_unmap_unlock:
f9b6721a 3356 qlt_unmap_sg(vha, cmd);
82de802a 3357 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103 3358
0dcec41a
BVA		 3359free:
3360 vha->hw->tgt.tgt_ops->free_cmd(cmd);
2d70c103
NB		 3361 return res;
3362}
3363EXPORT_SYMBOL(qlt_xmit_response);
3364
3365int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
3366{
3367 struct ctio7_to_24xx *pkt;
3368 struct scsi_qla_host *vha = cmd->vha;
2d70c103
NB		 3369 struct qla_tgt *tgt = cmd->tgt;
3370 struct qla_tgt_prm prm;
82de802a 3371 unsigned long flags = 0;
2d70c103 3372 int res = 0;
82de802a 3373 struct qla_qpair *qpair = cmd->qpair;
2d70c103
NB		 3374
3375 memset(&prm, 0, sizeof(prm));
3376 prm.cmd = cmd;
3377 prm.tgt = tgt;
3378 prm.sg = NULL;
3379 prm.req_cnt = 1;
3380
2d70c103
NB		 3381 /* Calculate number of entries and segments required */
3382 if (qlt_pci_map_calc_cnt(&prm) != 0)
3383 return -EAGAIN;
3384
7c3f8fd1 3385 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) ||
726b8548 3386 (cmd->sess && cmd->sess->deleted)) {
b6a029e1 3387 /*
3bb67df5 3388 * Either the port is not online or this request was from
b6a029e1
AE		 3389 * previous life, just abort the processing.
3390 */
aefed3e5
BVA		 3391 cmd->aborted = 1;
3392 cmd->write_data_transferred = 0;
3393 cmd->state = QLA_TGT_STATE_DATA_IN;
3394 vha->hw->tgt.tgt_ops->handle_data(cmd);
22d84726 3395 ql_dbg_qp(ql_dbg_async, qpair, 0xe102,
3bb67df5
DKU		 3396 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
3397 vha->flags.online, qla2x00_reset_active(vha),
7c3f8fd1 3398 cmd->reset_count, qpair->chip_reset);
b6a029e1
AE		 3399 return 0;
3400 }
3401
82de802a 3402 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
2d70c103 3403 /* Does F/W have an IOCBs for this request */
82de802a 3404 res = qlt_check_reserve_free_req(qpair, prm.req_cnt);
2d70c103
NB		 3405 if (res != 0)
3406 goto out_unlock_free_unmap;
f83adb61 3407 if (cmd->se_cmd.prot_op)
82de802a 3408 res = qlt_build_ctio_crc2_pkt(qpair, &prm);
f83adb61 3409 else
82de802a 3410 res = qlt_24xx_build_ctio_pkt(qpair, &prm);
2d70c103 3411
810e30bc 3412 if (unlikely(res != 0)) {
82de802a 3413 qpair->req->cnt += prm.req_cnt;
2d70c103 3414 goto out_unlock_free_unmap;
810e30bc
QT		 3415 }
3416
2d70c103 3417 pkt = (struct ctio7_to_24xx *)prm.pkt;
ad950360 3418 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
2d70c103 3419 CTIO7_FLAGS_STATUS_MODE_0);
f83adb61
QT		 3420
3421 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL)
32d29b4c 3422 qlt_load_data_segments(&prm);
2d70c103
NB		 3423
3424 cmd->state = QLA_TGT_STATE_NEED_DATA;
d564a372 3425 cmd->cmd_sent_to_fw = 1;
079a3a3b 3426 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags);
2d70c103 3427
63163e06
HM		 3428 /* Memory Barrier */
3429 wmb();
8abfa9e2
QT		 3430 if (qpair->reqq_start_iocbs)
3431 qpair->reqq_start_iocbs(qpair);
3432 else
3433 qla2x00_start_iocbs(vha, qpair->req);
82de802a 3434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3435
3436 return res;
3437
3438out_unlock_free_unmap:
f9b6721a 3439 qlt_unmap_sg(vha, cmd);
82de802a 3440 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
2d70c103
NB		 3441
3442 return res;
3443}
3444EXPORT_SYMBOL(qlt_rdy_to_xfer);
3445
f83adb61
QT		 3446
3447/*
be25152c 3448 * it is assumed either hardware_lock or qpair lock is held.
f83adb61 3449 */
be25152c 3450static void
8abfa9e2 3451qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd,
be25152c 3452 struct ctio_crc_from_fw *sts)
f83adb61
QT		 3453{
3454 uint8_t *ap = &sts->actual_dif[0];
3455 uint8_t *ep = &sts->expected_dif[0];
f83adb61 3456 uint64_t lba = cmd->se_cmd.t_task_lba;
be25152c
QT		 3457 uint8_t scsi_status, sense_key, asc, ascq;
3458 unsigned long flags;
8abfa9e2 3459 struct scsi_qla_host *vha = cmd->vha;
f83adb61 3460
be25152c 3461 cmd->trc_flags |= TRC_DIF_ERR;
f83adb61 3462
a9c4ae10
BVA		 3463 cmd->a_guard = get_unaligned_be16(ap + 0);
3464 cmd->a_app_tag = get_unaligned_be16(ap + 2);
3465 cmd->a_ref_tag = get_unaligned_be32(ap + 4);
f83adb61 3466
a9c4ae10
BVA		 3467 cmd->e_guard = get_unaligned_be16(ep + 0);
3468 cmd->e_app_tag = get_unaligned_be16(ep + 2);
3469 cmd->e_ref_tag = get_unaligned_be32(ep + 4);
f83adb61 3470
be25152c
QT		 3471 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
3472 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
f83adb61 3473
be25152c 3474 scsi_status = sense_key = asc = ascq = 0;
f83adb61 3475
be25152c
QT		 3476 /* check appl tag */
3477 if (cmd->e_app_tag != cmd->a_app_tag) {
83548fe2
QT		 3478 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d,
3479 "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]",
3480 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3481 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3482 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3483 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3484
3485 cmd->dif_err_code = DIF_ERR_APP;
3486 scsi_status = SAM_STAT_CHECK_CONDITION;
3487 sense_key = ABORTED_COMMAND;
3488 asc = 0x10;
3489 ascq = 0x2;
f83adb61
QT		 3490 }
3491
3492 /* check ref tag */
be25152c 3493 if (cmd->e_ref_tag != cmd->a_ref_tag) {
83548fe2
QT		 3494 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e,
3495 "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] ",
3496 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
3497 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag,
3498 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd,
3499 cmd->atio.u.isp24.fcp_hdr.ox_id);
be25152c
QT		 3500
3501 cmd->dif_err_code = DIF_ERR_REF;
3502 scsi_status = SAM_STAT_CHECK_CONDITION;
3503 sense_key = ABORTED_COMMAND;
3504 asc = 0x10;
3505 ascq = 0x3;
f83adb61
QT		 3506 goto out;
3507 }
3508
be25152c
QT		 3509 /* check guard */
3510 if (cmd->e_guard != cmd->a_guard) {
83548fe2
QT		 3511 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012,
3512 "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]",
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);
3517
be25152c
QT		 3518 cmd->dif_err_code = DIF_ERR_GRD;
3519 scsi_status = SAM_STAT_CHECK_CONDITION;
3520 sense_key = ABORTED_COMMAND;
3521 asc = 0x10;
3522 ascq = 0x1;
f83adb61
QT		 3523 }
3524out:
be25152c
QT		 3525 switch (cmd->state) {
3526 case QLA_TGT_STATE_NEED_DATA:
3527 /* handle_data will load DIF error code */
3528 cmd->state = QLA_TGT_STATE_DATA_IN;
3529 vha->hw->tgt.tgt_ops->handle_data(cmd);
3530 break;
3531 default:
3532 spin_lock_irqsave(&cmd->cmd_lock, flags);
3533 if (cmd->aborted) {
3534 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3535 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3536 break;
3537 }
3538 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
f83adb61 3539
8abfa9e2
QT		 3540 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
3541 ascq);
be25152c
QT		 3542 /* assume scsi status gets out on the wire.
3543 * Will not wait for completion.
3544 */
3545 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3546 break;
3547 }
3548}
f83adb61 3549
a6ca8878
AP		 3550/* If hardware_lock held on entry, might drop it, then reaquire */
3551/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
3552static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3553 struct imm_ntfy_from_isp *ntfy)
3554{
3555 struct nack_to_isp *nack;
3556 struct qla_hw_data *ha = vha->hw;
3557 request_t *pkt;
3558 int ret = 0;
3559
3560 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
3561 "Sending TERM ELS CTIO (ha=%p)\n", ha);
3562
ec7193e2 3563 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
a6ca8878
AP		 3564 if (pkt == NULL) {
3565 ql_dbg(ql_dbg_tgt, vha, 0xe080,
3566 "qla_target(%d): %s failed: unable to allocate "
3567 "request packet\n", vha->vp_idx, __func__);
3568 return -ENOMEM;
3569 }
3570
3571 pkt->entry_type = NOTIFY_ACK_TYPE;
3572 pkt->entry_count = 1;
4f060736 3573 pkt->handle = QLA_TGT_SKIP_HANDLE;
a6ca8878
AP		 3574
3575 nack = (struct nack_to_isp *)pkt;
3576 nack->ox_id = ntfy->ox_id;
3577
3578 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3579 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3580 nack->u.isp24.flags = ntfy->u.isp24.flags &
7ffa5b93 3581 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB);
a6ca8878
AP		 3582 }
3583
3584 /* terminate */
3585 nack->u.isp24.flags |=
3586 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
3587
3588 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3589 nack->u.isp24.status = ntfy->u.isp24.status;
3590 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3591 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3592 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3593 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3594 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3595 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3596
3597 qla2x00_start_iocbs(vha, vha->req);
3598 return ret;
3599}
3600
3601static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
3602 struct imm_ntfy_from_isp *imm, int ha_locked)
3603{
a6ca8878
AP		 3604 int rc;
3605
e65449aa 3606 WARN_ON_ONCE(!ha_locked);
a6ca8878 3607 rc = __qlt_send_term_imm_notif(vha, imm);
e65449aa 3608 pr_debug("rc = %d\n", rc);
a6ca8878
AP		 3609}
3610
83548fe2
QT		 3611/*
3612 * If hardware_lock held on entry, might drop it, then reaquire
3613 * This function sends the appropriate CTIO to ISP 2xxx or 24xx
3614 */
82de802a 3615static int __qlt_send_term_exchange(struct qla_qpair *qpair,
2d70c103
NB		 3616 struct qla_tgt_cmd *cmd,
3617 struct atio_from_isp *atio)
3618{
82de802a 3619 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 3620 struct ctio7_to_24xx *ctio24;
3621 struct qla_hw_data *ha = vha->hw;
3622 request_t *pkt;
3623 int ret = 0;
33a5fcee 3624 uint16_t temp;
2d70c103 3625
83548fe2 3626 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
2d70c103 3627
72fcd4eb
QT		 3628 if (cmd)
3629 vha = cmd->vha;
3630
82de802a 3631 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL);
2d70c103
NB		 3632 if (pkt == NULL) {
3633 ql_dbg(ql_dbg_tgt, vha, 0xe050,
3634 "qla_target(%d): %s failed: unable to allocate "
3635 "request packet\n", vha->vp_idx, __func__);
3636 return -ENOMEM;
3637 }
3638
3639 if (cmd != NULL) {
3640 if (cmd->state < QLA_TGT_STATE_PROCESSED) {
3641 ql_dbg(ql_dbg_tgt, vha, 0xe051,
3642 "qla_target(%d): Terminating cmd %p with "
3643 "incorrect state %d\n", vha->vp_idx, cmd,
3644 cmd->state);
3645 } else
3646 ret = 1;
3647 }
3648
60a9eadb 3649 qpair->tgt_counters.num_term_xchg_sent++;
2d70c103
NB		 3650 pkt->entry_count = 1;
3651 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
3652
3653 ctio24 = (struct ctio7_to_24xx *)pkt;
3654 ctio24->entry_type = CTIO_TYPE7;
7ffa5b93 3655 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED);
ad950360 3656 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103 3657 ctio24->vp_index = vha->vp_idx;
df95f39a 3658 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2d70c103 3659 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5
QT		 3660 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 |
3661 CTIO7_FLAGS_TERMINATE;
3662 ctio24->u.status1.flags = cpu_to_le16(temp);
33a5fcee
QT		 3663 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
3664 ctio24->u.status1.ox_id = cpu_to_le16(temp);
2d70c103 3665
63163e06
HM		 3666 /* Memory Barrier */
3667 wmb();
8abfa9e2
QT		 3668 if (qpair->reqq_start_iocbs)
3669 qpair->reqq_start_iocbs(qpair);
3670 else
3671 qla2x00_start_iocbs(vha, qpair->req);
2d70c103
NB		 3672 return ret;
3673}
3674
82de802a 3675static void qlt_send_term_exchange(struct qla_qpair *qpair,
a07100e0
QT		 3676 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
3677 int ul_abort)
2d70c103 3678{
82de802a 3679 struct scsi_qla_host *vha;
6bc85dd5 3680 unsigned long flags = 0;
2d70c103
NB		 3681 int rc;
3682
82de802a
QT		 3683 /* why use different vha? NPIV */
3684 if (cmd)
3685 vha = cmd->vha;
3686 else
3687 vha = qpair->vha;
2d70c103
NB		 3688
3689 if (ha_locked) {
82de802a 3690 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3691 if (rc == -ENOMEM)
3692 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
2d70c103
NB		 3693 goto done;
3694 }
82de802a
QT		 3695 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
3696 rc = __qlt_send_term_exchange(qpair, cmd, atio);
33e79977
QT		 3697 if (rc == -ENOMEM)
3698 qlt_alloc_qfull_cmd(vha, atio, 0, 0);
d564a372 3699
2d70c103 3700done:
a07100e0 3701 if (cmd && !ul_abort && !cmd->aborted) {
6bc85dd5
HM		 3702 if (cmd->sg_mapped)
3703 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3704 vha->hw->tgt.tgt_ops->free_cmd(cmd);
3705 }
6bc85dd5
HM		 3706
3707 if (!ha_locked)
82de802a 3708 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6bc85dd5 3709
7b898542 3710 return;
2d70c103
NB		 3711}
3712
33e79977
QT		 3713static void qlt_init_term_exchange(struct scsi_qla_host *vha)
3714{
3715 struct list_head free_list;
3716 struct qla_tgt_cmd *cmd, *tcmd;
3717
3718 vha->hw->tgt.leak_exchg_thresh_hold =
03e8c680 3719 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
33e79977
QT		 3720
3721 cmd = tcmd = NULL;
3722 if (!list_empty(&vha->hw->tgt.q_full_list)) {
3723 INIT_LIST_HEAD(&free_list);
3724 list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
3725
3726 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
3727 list_del(&cmd->cmd_list);
3728 /* This cmd was never sent to TCM. There is no need
3729 * to schedule free or call free_cmd
3730 */
3731 qlt_free_cmd(cmd);
3732 vha->hw->tgt.num_qfull_cmds_alloc--;
3733 }
3734 }
3735 vha->hw->tgt.num_qfull_cmds_dropped = 0;
3736}
3737
3738static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
3739{
3740 uint32_t total_leaked;
3741
3742 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
3743
3744 if (vha->hw->tgt.leak_exchg_thresh_hold &&
3745 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
3746
3747 ql_dbg(ql_dbg_tgt, vha, 0xe079,
3748 "Chip reset due to exchange starvation: %d/%d.\n",
03e8c680 3749 total_leaked, vha->hw->cur_fw_xcb_count);
33e79977
QT		 3750
3751 if (IS_P3P_TYPE(vha->hw))
3752 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
3753 else
3754 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3755 qla2xxx_wake_dpc(vha);
3756 }
3757
3758}
3759
a07100e0 3760int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
7359df25
AP		 3761{
3762 struct qla_tgt *tgt = cmd->tgt;
3763 struct scsi_qla_host *vha = tgt->vha;
3764 struct se_cmd *se_cmd = &cmd->se_cmd;
a07100e0 3765 unsigned long flags;
7359df25
AP		 3766
3767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
3768 "qla_target(%d): terminating exchange for aborted cmd=%p "
3769 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
3770 se_cmd->tag);
3771
a07100e0
QT		 3772 spin_lock_irqsave(&cmd->cmd_lock, flags);
3773 if (cmd->aborted) {
3774 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
3775 /*
3776 * It's normal to see 2 calls in this path:
3777 * 1) XFER Rdy completion + CMD_T_ABORT
3778 * 2) TCM TMR - drain_state_list
3779 */
83548fe2
QT		 3780 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
3781 "multiple abort. %p transport_state %x, t_state %x, "
3782 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
3783 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
a07100e0
QT		 3784 return EIO;
3785 }
193b50b9 3786 cmd->aborted = 1;
1eb42f96 3787 cmd->trc_flags |= TRC_ABORT;
a07100e0 3788 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
7359df25 3789
82de802a 3790 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
a07100e0 3791 return 0;
7359df25
AP		 3792}
3793EXPORT_SYMBOL(qlt_abort_cmd);
3794
2d70c103
NB		 3795void qlt_free_cmd(struct qla_tgt_cmd *cmd)
3796{
5d964837 3797 struct fc_port *sess = cmd->sess;
51a07f84 3798
f83adb61
QT		 3799 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074,
3800 "%s: se_cmd[%p] ox_id %04x\n",
3801 __func__, &cmd->se_cmd,
3802 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
2d70c103 3803
e07f8f65
SK		 3804 BUG_ON(cmd->cmd_in_wq);
3805
a07100e0
QT		 3806 if (cmd->sg_mapped)
3807 qlt_unmap_sg(cmd->vha, cmd);
3808
33e79977
QT		 3809 if (!cmd->q_full)
3810 qlt_decr_num_pend_cmds(cmd->vha);
3811
f83adb61 3812 BUG_ON(cmd->sg_mapped);
e07f8f65 3813 cmd->jiffies_at_free = get_jiffies_64();
2d70c103
NB		 3814 if (unlikely(cmd->free_sg))
3815 kfree(cmd->sg);
51a07f84
NB		 3816
3817 if (!sess || !sess->se_sess) {
3818 WARN_ON(1);
3819 return;
3820 }
e07f8f65 3821 cmd->jiffies_at_free = get_jiffies_64();
80363e1b 3822 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
2d70c103
NB		 3823}
3824EXPORT_SYMBOL(qlt_free_cmd);
3825
2d70c103
NB		 3826/*
3827 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3828 */
82de802a 3829static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
2d70c103
NB		 3830 struct qla_tgt_cmd *cmd, uint32_t status)
3831{
3832 int term = 0;
82de802a 3833 struct scsi_qla_host *vha = qpair->vha;
2d70c103 3834
be25152c 3835 if (cmd->se_cmd.prot_op)
83548fe2 3836 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
be25152c
QT		 3837 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
3838 "se_cmd=%p tag[%x] op %#x/%s",
3839 cmd->lba, cmd->lba,
3840 cmd->num_blks, &cmd->se_cmd,
3841 cmd->atio.u.isp24.exchange_addr,
3842 cmd->se_cmd.prot_op,
3843 prot_op_str(cmd->se_cmd.prot_op));
3844
2d70c103
NB		 3845 if (ctio != NULL) {
3846 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
bd432bb5 3847
2d70c103 3848 term = !(c->flags &
ad950360 3849 cpu_to_le16(OF_TERM_EXCH));
2d70c103
NB		 3850 } else
3851 term = 1;
3852
3853 if (term)
3efc31f7 3854 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
2d70c103
NB		 3855
3856 return term;
3857}
3858
2d70c103
NB		 3859
3860/* ha->hardware_lock supposed to be held on entry */
6b0431d6 3861static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
82de802a 3862 struct rsp_que *rsp, uint32_t handle, void *ctio)
2d70c103 3863{
6b0431d6 3864 void *cmd = NULL;
82de802a
QT		 3865 struct req_que *req;
3866 int qid = GET_QID(handle);
3867 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK;
2d70c103 3868
82de802a
QT		 3869 if (unlikely(h == QLA_TGT_SKIP_HANDLE))
3870 return NULL;
2d70c103 3871
82de802a
QT		 3872 if (qid == rsp->req->id) {
3873 req = rsp->req;
3874 } else if (vha->hw->req_q_map[qid]) {
3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a,
3876 "qla_target(%d): CTIO completion with different QID %d handle %x\n",
3877 vha->vp_idx, rsp->id, handle);
3878 req = vha->hw->req_q_map[qid];
3879 } else {
3880 return NULL;
3881 }
667024a3 3882
82de802a 3883 h &= QLA_CMD_HANDLE_MASK;
c5419e26 3884
82de802a 3885 if (h != QLA_TGT_NULL_HANDLE) {
fb2028a0 3886 if (unlikely(h >= req->num_outstanding_cmds)) {
2d70c103
NB		 3887 ql_dbg(ql_dbg_tgt, vha, 0xe052,
3888 "qla_target(%d): Wrong handle %x received\n",
3889 vha->vp_idx, handle);
3890 return NULL;
3891 }
82de802a 3892
ab053c09 3893 cmd = req->outstanding_cmds[h];
82de802a 3894 if (unlikely(cmd == NULL)) {
c5419e26 3895 ql_dbg(ql_dbg_async, vha, 0xe053,
82de802a
QT		 3896 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n",
3897 vha->vp_idx, handle, req->id, rsp->id);
2d70c103
NB		 3898 return NULL;
3899 }
82de802a 3900 req->outstanding_cmds[h] = NULL;
2d70c103
NB		 3901 } else if (ctio != NULL) {
3902 /* We can't get loop ID from CTIO7 */
3903 ql_dbg(ql_dbg_tgt, vha, 0xe054,
3904 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't "
3905 "support NULL handles\n", vha->vp_idx);
3906 return NULL;
3907 }
3908
3909 return cmd;
3910}
3911
3912/*
3913 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
3914 */
82de802a
QT		 3915static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
3916 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio)
2d70c103
NB		 3917{
3918 struct qla_hw_data *ha = vha->hw;
3919 struct se_cmd *se_cmd;
2d70c103 3920 struct qla_tgt_cmd *cmd;
82de802a 3921 struct qla_qpair *qpair = rsp->qpair;
2d70c103 3922
2d70c103
NB		 3923 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
3924 /* That could happen only in case of an error/reset/abort */
3925 if (status != CTIO_SUCCESS) {
3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d,
3927 "Intermediate CTIO received"
3928 " (status %x)\n", status);
3929 }
3930 return;
3931 }
3932
81bcf1c5 3933 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio);
092e1dc3 3934 if (cmd == NULL)
2d70c103 3935 return;
092e1dc3 3936
2d70c103 3937 se_cmd = &cmd->se_cmd;
d564a372 3938 cmd->cmd_sent_to_fw = 0;
2d70c103 3939
f9b6721a 3940 qlt_unmap_sg(vha, cmd);
2d70c103
NB		 3941
3942 if (unlikely(status != CTIO_SUCCESS)) {
3943 switch (status & 0xFFFF) {
079a3a3b
QT		 3944 case CTIO_INVALID_RX_ID:
3945 if (printk_ratelimit())
3946 dev_info(&vha->hw->pdev->dev,
3947 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
3948 vha->vp_idx, cmd->atio.u.isp24.attr,
3949 ((cmd->ctio_flags >> 9) & 0xf),
3950 cmd->ctio_flags);
3951
3952 break;
2d70c103
NB		 3953 case CTIO_LIP_RESET:
3954 case CTIO_TARGET_RESET:
3955 case CTIO_ABORTED:
7b898542 3956 /* driver request abort via Terminate exchange */
2d70c103 3957 case CTIO_TIMEOUT:
2d70c103
NB		 3958 /* They are OK */
3959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
3960 "qla_target(%d): CTIO with "
3961 "status %#x received, state %x, se_cmd %p, "
3962 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, "
3963 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx,
3964 status, cmd->state, se_cmd);
3965 break;
3966
3967 case CTIO_PORT_LOGGED_OUT:
3968 case CTIO_PORT_UNAVAILABLE:
71cdc079 3969 {
dacb5822
HM		 3970 int logged_out =
3971 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
3972
2d70c103 3973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
71cdc079 3974 "qla_target(%d): CTIO with %s status %x "
2d70c103 3975 "received (state %x, se_cmd %p)\n", vha->vp_idx,
dacb5822 3976 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
2d70c103 3977 status, cmd->state, se_cmd);
2d70c103 3978
71cdc079
AP		 3979 if (logged_out && cmd->sess) {
3980 /*
3981 * Session is already logged out, but we need
3982 * to notify initiator, who's not aware of this
3983 */
71cdc079 3984 cmd->sess->send_els_logo = 1;
83548fe2 3985 ql_dbg(ql_dbg_disc, vha, 0x20f8,
726b8548
QT		 3986 "%s %d %8phC post del sess\n",
3987 __func__, __LINE__, cmd->sess->port_name);
3988
d8630bb9 3989 qlt_schedule_sess_for_deletion(cmd->sess);
71cdc079
AP		 3990 }
3991 break;
3992 }
f83adb61
QT		 3993 case CTIO_DIF_ERROR: {
3994 struct ctio_crc_from_fw *crc =
3995 (struct ctio_crc_from_fw *)ctio;
3996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
be25152c
QT		 3997 "qla_target(%d): CTIO with DIF_ERROR status %x "
3998 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
3999 "expect_dif[0x%llx]\n",
f83adb61
QT		 4000 vha->vp_idx, status, cmd->state, se_cmd,
4001 *((u64 *)&crc->actual_dif[0]),
4002 *((u64 *)&crc->expected_dif[0]));
4003
8abfa9e2 4004 qlt_handle_dif_error(qpair, cmd, ctio);
be25152c 4005 return;
f83adb61 4006 }
2d70c103
NB		 4007 default:
4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
f83adb61 4009 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n",
2d70c103
NB		 4010 vha->vp_idx, status, cmd->state, se_cmd);
4011 break;
4012 }
4013
7b898542 4014
193b50b9 4015 /* "cmd->aborted" means
7b898542
QT		 4016 * cmd is already aborted/terminated, we don't
4017 * need to terminate again. The exchange is already
4018 * cleaned up/freed at FW level. Just cleanup at driver
4019 * level.
4020 */
4021 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
193b50b9 4022 (!cmd->aborted)) {
1eb42f96 4023 cmd->trc_flags |= TRC_CTIO_ERR;
82de802a 4024 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
2d70c103 4025 return;
7b898542 4026 }
2d70c103
NB		 4027 }
4028
4029 if (cmd->state == QLA_TGT_STATE_PROCESSED) {
1eb42f96 4030 cmd->trc_flags |= TRC_CTIO_DONE;
2d70c103 4031 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
2d70c103
NB		 4032 cmd->state = QLA_TGT_STATE_DATA_IN;
4033
52c82823 4034 if (status == CTIO_SUCCESS)
2d70c103
NB		 4035 cmd->write_data_transferred = 1;
4036
2d70c103
NB		 4037 ha->tgt.tgt_ops->handle_data(cmd);
4038 return;
193b50b9 4039 } else if (cmd->aborted) {
1eb42f96 4040 cmd->trc_flags |= TRC_CTIO_ABORTED;
2d70c103 4041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
649ee054 4042 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag);
2d70c103 4043 } else {
1eb42f96 4044 cmd->trc_flags |= TRC_CTIO_STRANGE;
2d70c103
NB		 4045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c,
4046 "qla_target(%d): A command in state (%d) should "
4047 "not return a CTIO complete\n", vha->vp_idx, cmd->state);
4048 }
4049
7b898542 4050 if (unlikely(status != CTIO_SUCCESS) &&
193b50b9 4051 !cmd->aborted) {
2d70c103
NB		 4052 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
4053 dump_stack();
4054 }
4055
4056 ha->tgt.tgt_ops->free_cmd(cmd);
4057}
4058
2d70c103
NB		 4059static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha,
4060 uint8_t task_codes)
4061{
4062 int fcp_task_attr;
4063
4064 switch (task_codes) {
4065 case ATIO_SIMPLE_QUEUE:
68d81f40 4066 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 4067 break;
4068 case ATIO_HEAD_OF_QUEUE:
68d81f40 4069 fcp_task_attr = TCM_HEAD_TAG;
2d70c103
NB		 4070 break;
4071 case ATIO_ORDERED_QUEUE:
68d81f40 4072 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4073 break;
4074 case ATIO_ACA_QUEUE:
68d81f40 4075 fcp_task_attr = TCM_ACA_TAG;
2d70c103
NB		 4076 break;
4077 case ATIO_UNTAGGED:
68d81f40 4078 fcp_task_attr = TCM_SIMPLE_TAG;
2d70c103
NB		 4079 break;
4080 default:
4081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d,
4082 "qla_target: unknown task code %x, use ORDERED instead\n",
4083 task_codes);
68d81f40 4084 fcp_task_attr = TCM_ORDERED_TAG;
2d70c103
NB		 4085 break;
4086 }
4087
4088 return fcp_task_attr;
4089}
4090
2d70c103
NB		 4091/*
4092 * Process context for I/O path into tcm_qla2xxx code
4093 */
51a07f84 4094static void __qlt_do_work(struct qla_tgt_cmd *cmd)
2d70c103 4095{
2d70c103
NB		 4096 scsi_qla_host_t *vha = cmd->vha;
4097 struct qla_hw_data *ha = vha->hw;
5d964837 4098 struct fc_port *sess = cmd->sess;
2d70c103
NB		 4099 struct atio_from_isp *atio = &cmd->atio;
4100 unsigned char *cdb;
4101 unsigned long flags;
4102 uint32_t data_length;
4103 int ret, fcp_task_attr, data_dir, bidi = 0;
82de802a 4104 struct qla_qpair *qpair = cmd->qpair;
2d70c103 4105
e07f8f65 4106 cmd->cmd_in_wq = 0;
1eb42f96 4107 cmd->trc_flags |= TRC_DO_WORK;
2d70c103 4108
193b50b9 4109 if (cmd->aborted) {
8b2f5ff3
SN		 4110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
4111 "cmd with tag %u is aborted\n",
4112 cmd->atio.u.isp24.exchange_addr);
4113 goto out_term;
4114 }
4115
a07100e0 4116 spin_lock_init(&cmd->cmd_lock);
2d70c103 4117 cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
7ffa5b93 4118 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr);
2d70c103
NB		 4119
4120 if (atio->u.isp24.fcp_cmnd.rddata &&
4121 atio->u.isp24.fcp_cmnd.wrdata) {
4122 bidi = 1;
4123 data_dir = DMA_TO_DEVICE;
4124 } else if (atio->u.isp24.fcp_cmnd.rddata)
4125 data_dir = DMA_FROM_DEVICE;
4126 else if (atio->u.isp24.fcp_cmnd.wrdata)
4127 data_dir = DMA_TO_DEVICE;
4128 else
4129 data_dir = DMA_NONE;
4130
4131 fcp_task_attr = qlt_get_fcp_task_attr(vha,
4132 atio->u.isp24.fcp_cmnd.task_attr);
e25f7654 4133 data_length = get_datalen_for_atio(atio);
2d70c103 4134
51a07f84
NB		 4135 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
4136 fcp_task_attr, data_dir, bidi);
2d70c103
NB		 4137 if (ret != 0)
4138 goto out_term;
4139 /*
67eb4a60 4140 * Drop extra session reference from qlt_handle_cmd_for_atio().
2d70c103 4141 */
5d964837 4142 ha->tgt.tgt_ops->put_sess(sess);
2d70c103
NB		 4143 return;
4144
4145out_term:
667024a3 4146 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
2d70c103 4147 /*
fae9eaf8
RD		 4148 * cmd has not sent to target yet, so pass NULL as the second
4149 * argument to qlt_send_term_exchange() and free the memory here.
2d70c103 4150 */
1eb42f96 4151 cmd->trc_flags |= TRC_DO_WORK_ERR;
82de802a
QT		 4152 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
4153 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
33e79977
QT		 4154
4155 qlt_decr_num_pend_cmds(vha);
80363e1b 4156 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
82de802a 4157 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
7560151b 4158
5d964837 4159 ha->tgt.tgt_ops->put_sess(sess);
51a07f84
NB		 4160}
4161
4162static void qlt_do_work(struct work_struct *work)
4163{
4164 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
8b2f5ff3
SN		 4165 scsi_qla_host_t *vha = cmd->vha;
4166 unsigned long flags;
4167
4168 spin_lock_irqsave(&vha->cmd_list_lock, flags);
4169 list_del(&cmd->cmd_list);
4170 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
51a07f84
NB		 4171
4172 __qlt_do_work(cmd);
4173}
4174
09620eeb
QT		 4175void qlt_clr_qp_table(struct scsi_qla_host *vha)
4176{
4177 unsigned long flags;
4178 struct qla_hw_data *ha = vha->hw;
4179 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4180 void *node;
4181 u64 key = 0;
4182
4183 ql_log(ql_log_info, vha, 0x706c,
4184 "User update Number of Active Qpairs %d\n",
4185 ha->tgt.num_act_qpairs);
4186
4187 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
4188
4189 btree_for_each_safe64(&tgt->lun_qpair_map, key, node)
4190 btree_remove64(&tgt->lun_qpair_map, key);
4191
4192 ha->base_qpair->lun_cnt = 0;
4193 for (key = 0; key < ha->max_qpairs; key++)
4194 if (ha->queue_pair_map[key])
4195 ha->queue_pair_map[key]->lun_cnt = 0;
4196
4197 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
4198}
4199
e326d22a
QT		 4200static void qlt_assign_qpair(struct scsi_qla_host *vha,
4201 struct qla_tgt_cmd *cmd)
4202{
4203 struct qla_qpair *qpair, *qp;
4204 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4205 struct qla_qpair_hint *h;
4206
4207 if (vha->flags.qpairs_available) {
4208 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun);
4209 if (unlikely(!h)) {
4210 /* spread lun to qpair ratio evently */
4211 int lcnt = 0, rc;
4212 struct scsi_qla_host *base_vha =
4213 pci_get_drvdata(vha->hw->pdev);
4214
4215 qpair = vha->hw->base_qpair;
4216 if (qpair->lun_cnt == 0) {
4217 qpair->lun_cnt++;
4218 h = qla_qpair_to_hint(tgt, qpair);
4219 BUG_ON(!h);
4220 rc = btree_insert64(&tgt->lun_qpair_map,
4221 cmd->unpacked_lun, h, GFP_ATOMIC);
4222 if (rc) {
4223 qpair->lun_cnt--;
4224 ql_log(ql_log_info, vha, 0xd037,
4225 "Unable to insert lun %llx into lun_qpair_map\n",
4226 cmd->unpacked_lun);
4227 }
4228 goto out;
4229 } else {
4230 lcnt = qpair->lun_cnt;
4231 }
4232
4233 h = NULL;
4234 list_for_each_entry(qp, &base_vha->qp_list,
4235 qp_list_elem) {
4236 if (qp->lun_cnt == 0) {
4237 qp->lun_cnt++;
4238 h = qla_qpair_to_hint(tgt, qp);
4239 BUG_ON(!h);
4240 rc = btree_insert64(&tgt->lun_qpair_map,
4241 cmd->unpacked_lun, h, GFP_ATOMIC);
4242 if (rc) {
4243 qp->lun_cnt--;
4244 ql_log(ql_log_info, vha, 0xd038,
4245 "Unable to insert lun %llx into lun_qpair_map\n",
4246 cmd->unpacked_lun);
4247 }
4248 qpair = qp;
4249 goto out;
4250 } else {
4251 if (qp->lun_cnt < lcnt) {
4252 lcnt = qp->lun_cnt;
4253 qpair = qp;
4254 continue;
4255 }
4256 }
4257 }
4258 BUG_ON(!qpair);
4259 qpair->lun_cnt++;
4260 h = qla_qpair_to_hint(tgt, qpair);
4261 BUG_ON(!h);
4262 rc = btree_insert64(&tgt->lun_qpair_map,
4263 cmd->unpacked_lun, h, GFP_ATOMIC);
4264 if (rc) {
4265 qpair->lun_cnt--;
4266 ql_log(ql_log_info, vha, 0xd039,
4267 "Unable to insert lun %llx into lun_qpair_map\n",
4268 cmd->unpacked_lun);
4269 }
4270 }
4271 } else {
4272 h = &tgt->qphints[0];
4273 }
4274out:
4275 cmd->qpair = h->qpair;
4276 cmd->se_cmd.cpuid = h->cpuid;
4277}
4278
51a07f84 4279static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
5d964837 4280 struct fc_port *sess,
51a07f84
NB		 4281 struct atio_from_isp *atio)
4282{
51a07f84 4283 struct qla_tgt_cmd *cmd;
51a07f84 4284
80363e1b
BVA		 4285 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess);
4286 if (!cmd)
51a07f84
NB		 4287 return NULL;
4288
c5419e26 4289 cmd->cmd_type = TYPE_TGT_CMD;
51a07f84
NB		 4290 memcpy(&cmd->atio, atio, sizeof(*atio));
4291 cmd->state = QLA_TGT_STATE_NEW;
4292 cmd->tgt = vha->vha_tgt.qla_tgt;
33e79977 4293 qlt_incr_num_pend_cmds(vha);
51a07f84 4294 cmd->vha = vha;
51a07f84
NB		 4295 cmd->sess = sess;
4296 cmd->loop_id = sess->loop_id;
4297 cmd->conf_compl_supported = sess->conf_compl_supported;
4298
1eb42f96 4299 cmd->trc_flags = 0;
9fce1254
KS		 4300 cmd->jiffies_at_alloc = get_jiffies_64();
4301
e326d22a
QT		 4302 cmd->unpacked_lun = scsilun_to_int(
4303 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
4304 qlt_assign_qpair(vha, cmd);
7c3f8fd1 4305 cmd->reset_count = vha->hw->base_qpair->chip_reset;
22d84726 4306 cmd->vp_idx = vha->vp_idx;
9fce1254 4307
51a07f84
NB		 4308 return cmd;
4309}
4310
2d70c103
NB		 4311/* ha->hardware_lock supposed to be held on entry */
4312static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
4313 struct atio_from_isp *atio)
4314{
51a07f84 4315 struct qla_hw_data *ha = vha->hw;
0e8cd71c 4316 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5d964837 4317 struct fc_port *sess;
2d70c103 4318 struct qla_tgt_cmd *cmd;
5d964837 4319 unsigned long flags;
a4239945 4320 port_id_t id;
2d70c103
NB		 4321
4322 if (unlikely(tgt->tgt_stop)) {
667024a3 4323 ql_dbg(ql_dbg_io, vha, 0x3061,
2d70c103 4324 "New command while device %p is shutting down\n", tgt);
7cf95f7e 4325 return -ENODEV;
2d70c103
NB		 4326 }
4327
df95f39a 4328 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
a4239945
QT		 4329 if (IS_SW_RESV_ADDR(id))
4330 return -EBUSY;
4331
51a07f84 4332 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
fb35265b
QT		 4333 if (unlikely(!sess))
4334 return -EFAULT;
e52a8b45
AP		 4335
4336 /* Another WWN used to have our s_id. Our PLOGI scheduled its
4337 * session deletion, but it's still in sess_del_work wq */
726b8548 4338 if (sess->deleted) {
83548fe2 4339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
e52a8b45
AP		 4340 "New command while old session %p is being deleted\n",
4341 sess);
4342 return -EFAULT;
4343 }
4344
51a07f84
NB		 4345 /*
4346 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
4347 */
726b8548 4348 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 4349 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
726b8548
QT		 4350 "%s: kref_get fail, %8phC oxid %x \n",
4351 __func__, sess->port_name,
4352 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
4353 return -EFAULT;
4354 }
51a07f84
NB		 4355
4356 cmd = qlt_get_tag(vha, sess, atio);
2d70c103 4357 if (!cmd) {
667024a3 4358 ql_dbg(ql_dbg_io, vha, 0x3062,
2d70c103 4359 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
5d964837 4360 ha->tgt.tgt_ops->put_sess(sess);
7cf95f7e 4361 return -EBUSY;
2d70c103
NB		 4362 }
4363
e07f8f65 4364 cmd->cmd_in_wq = 1;
1eb42f96 4365 cmd->trc_flags |= TRC_NEW_CMD;
8b2f5ff3 4366
726b8548 4367 spin_lock_irqsave(&vha->cmd_list_lock, flags);
8b2f5ff3 4368 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
726b8548 4369 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
8b2f5ff3 4370
2d70c103 4371 INIT_WORK(&cmd->work, qlt_do_work);
e326d22a
QT		 4372 if (vha->flags.qpairs_available) {
4373 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work);
4374 } else if (ha->msix_count) {
fb3269ba
QT		 4375 if (cmd->atio.u.isp24.fcp_cmnd.rddata)
4376 queue_work_on(smp_processor_id(), qla_tgt_wq,
4377 &cmd->work);
4378 else
4379 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq,
4380 &cmd->work);
4381 } else {
4382 queue_work(qla_tgt_wq, &cmd->work);
4383 }
2d70c103 4384
82de802a 4385 return 0;
2d70c103
NB		 4386}
4387
4388/* ha->hardware_lock supposed to be held on entry */
5d964837 4389static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
2d70c103
NB		 4390 int fn, void *iocb, int flags)
4391{
4392 struct scsi_qla_host *vha = sess->vha;
4393 struct qla_hw_data *ha = vha->hw;
4394 struct qla_tgt_mgmt_cmd *mcmd;
8b2f5ff3 4395 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
84905dfe 4396 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0];
2d70c103
NB		 4397
4398 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4399 if (!mcmd) {
4400 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009,
4401 "qla_target(%d): Allocation of management "
4402 "command failed, some commands and their data could "
4403 "leak\n", vha->vp_idx);
4404 return -ENOMEM;
4405 }
4406 memset(mcmd, 0, sizeof(*mcmd));
4407 mcmd->sess = sess;
4408
4409 if (iocb) {
4410 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4411 sizeof(mcmd->orig_iocb.imm_ntfy));
4412 }
4413 mcmd->tmr_func = fn;
4414 mcmd->flags = flags;
7c3f8fd1 4415 mcmd->reset_count = ha->base_qpair->chip_reset;
84905dfe 4416 mcmd->qpair = h->qpair;
72fcd4eb 4417 mcmd->vha = vha;
84905dfe
QT		 4418 mcmd->se_cmd.cpuid = h->cpuid;
4419 mcmd->unpacked_lun = lun;
2d70c103
NB		 4420
4421 switch (fn) {
2d70c103 4422 case QLA_TGT_LUN_RESET:
84905dfe
QT		 4423 case QLA_TGT_CLEAR_TS:
4424 case QLA_TGT_ABORT_TS:
4425 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
df561f66 4426 fallthrough;
84905dfe
QT		 4427 case QLA_TGT_CLEAR_ACA:
4428 h = qlt_find_qphint(vha, mcmd->unpacked_lun);
4429 mcmd->qpair = h->qpair;
4430 mcmd->se_cmd.cpuid = h->cpuid;
4431 break;
2d70c103 4432
84905dfe
QT		 4433 case QLA_TGT_TARGET_RESET:
4434 case QLA_TGT_NEXUS_LOSS_SESS:
4435 case QLA_TGT_NEXUS_LOSS:
4436 case QLA_TGT_ABORT_ALL:
4437 default:
4438 /* no-op */
4439 break;
2d70c103
NB		 4440 }
4441
84905dfe
QT		 4442 INIT_WORK(&mcmd->work, qlt_do_tmr_work);
4443 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq,
4444 &mcmd->work);
4445
2d70c103
NB		 4446 return 0;
4447}
4448
4449/* ha->hardware_lock supposed to be held on entry */
4450static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
4451{
4452 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4453 struct qla_hw_data *ha = vha->hw;
5d964837 4454 struct fc_port *sess;
f775bd14 4455 u64 unpacked_lun;
52c82823 4456 int fn;
7560151b 4457 unsigned long flags;
2d70c103 4458
2d70c103 4459 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
7560151b
QT		 4460
4461 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 4462 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
4463 a->u.isp24.fcp_hdr.s_id);
7560151b
QT		 4464 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4465
f775bd14
QT		 4466 unpacked_lun =
4467 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103 4468
fb35265b 4469 if (sess == NULL || sess->deleted)
e52a8b45
AP		 4470 return -EFAULT;
4471
2d70c103
NB		 4472 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
4473}
4474
4475/* ha->hardware_lock supposed to be held on entry */
4476static int __qlt_abort_task(struct scsi_qla_host *vha,
5d964837 4477 struct imm_ntfy_from_isp *iocb, struct fc_port *sess)
2d70c103
NB		 4478{
4479 struct atio_from_isp *a = (struct atio_from_isp *)iocb;
4480 struct qla_hw_data *ha = vha->hw;
4481 struct qla_tgt_mgmt_cmd *mcmd;
f775bd14 4482 u64 unpacked_lun;
2d70c103
NB		 4483 int rc;
4484
4485 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
4486 if (mcmd == NULL) {
4487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f,
4488 "qla_target(%d): %s: Allocation of ABORT cmd failed\n",
4489 vha->vp_idx, __func__);
4490 return -ENOMEM;
4491 }
4492 memset(mcmd, 0, sizeof(*mcmd));
4493
4494 mcmd->sess = sess;
4495 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb,
4496 sizeof(mcmd->orig_iocb.imm_ntfy));
4497
f775bd14
QT		 4498 unpacked_lun =
4499 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
7c3f8fd1 4500 mcmd->reset_count = ha->base_qpair->chip_reset;
be92fc3f 4501 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK;
82de802a 4502 mcmd->qpair = ha->base_qpair;
2d70c103 4503
be92fc3f 4504 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func,
2d70c103
NB		 4505 le16_to_cpu(iocb->u.isp2x.seq_id));
4506 if (rc != 0) {
4507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060,
4508 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
4509 vha->vp_idx, rc);
4510 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
4511 return -EFAULT;
4512 }
4513
4514 return 0;
4515}
4516
4517/* ha->hardware_lock supposed to be held on entry */
4518static int qlt_abort_task(struct scsi_qla_host *vha,
4519 struct imm_ntfy_from_isp *iocb)
4520{
4521 struct qla_hw_data *ha = vha->hw;
5d964837 4522 struct fc_port *sess;
2d70c103 4523 int loop_id;
7560151b 4524 unsigned long flags;
2d70c103
NB		 4525
4526 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
4527
7560151b 4528 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 4529 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
7560151b
QT		 4530 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
4531
2d70c103
NB		 4532 if (sess == NULL) {
4533 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025,
4534 "qla_target(%d): task abort for unexisting "
4535 "session\n", vha->vp_idx);
0e8cd71c 4536 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt,
2d70c103
NB		 4537 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
4538 }
4539
4540 return __qlt_abort_task(vha, iocb, sess);
4541}
4542
a6ca8878
AP		 4543void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
4544{
726b8548
QT		 4545 if (rc != MBS_COMMAND_COMPLETE) {
4546 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
4547 "%s: se_sess %p / sess %p from"
4548 " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
4549 " LOGO failed: %#x\n",
4550 __func__,
4551 fcport->se_sess,
4552 fcport,
4553 fcport->port_name, fcport->loop_id,
4554 fcport->d_id.b.domain, fcport->d_id.b.area,
4555 fcport->d_id.b.al_pa, rc);
4556 }
4557
4558 fcport->logout_completed = 1;
a6ca8878
AP		 4559}
4560
a6ca8878
AP		 4561/*
4562* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
4563*
4564* Schedules sessions with matching port_id/loop_id but different wwn for
4565* deletion. Returns existing session with matching wwn if present.
4566* Null otherwise.
4567*/
726b8548
QT		 4568struct fc_port *
4569qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn,
5d964837 4570 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess)
a6ca8878 4571{
5d964837 4572 struct fc_port *sess = NULL, *other_sess;
a6ca8878
AP		 4573 uint64_t other_wwn;
4574
b7bd104e
AP		 4575 *conflict_sess = NULL;
4576
5d964837 4577 list_for_each_entry(other_sess, &vha->vp_fcports, list) {
a6ca8878
AP		 4578
4579 other_wwn = wwn_to_u64(other_sess->port_name);
4580
4581 if (wwn == other_wwn) {
4582 WARN_ON(sess);
4583 sess = other_sess;
4584 continue;
4585 }
4586
4587 /* find other sess with nport_id collision */
37cacc0a 4588 if (port_id.b24 == other_sess->d_id.b24) {
a6ca8878 4589 if (loop_id != other_sess->loop_id) {
e1217dc3 4590 ql_dbg(ql_dbg_disc, vha, 0x1000c,
a6ca8878
AP		 4591 "Invalidating sess %p loop_id %d wwn %llx.\n",
4592 other_sess, other_sess->loop_id, other_wwn);
4593
4594 /*
4595 * logout_on_delete is set by default, but another
4596 * session that has the same s_id/loop_id combo
4597 * might have cleared it when requested this session
4598 * deletion, so don't touch it
4599 */
94cff6e1 4600 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4601 } else {
4602 /*
4603 * Another wwn used to have our s_id/loop_id
b7bd104e 4604 * kill the session, but don't free the loop_id
a6ca8878 4605 */
e1217dc3 4606 ql_dbg(ql_dbg_disc, vha, 0xf01b,
726b8548
QT		 4607 "Invalidating sess %p loop_id %d wwn %llx.\n",
4608 other_sess, other_sess->loop_id, other_wwn);
4609
b7bd104e 4610 other_sess->keep_nport_handle = 1;
ba743f91
QT		 4611 if (other_sess->disc_state != DSC_DELETED)
4612 *conflict_sess = other_sess;
94cff6e1 4613 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4614 }
4615 continue;
4616 }
4617
4618 /* find other sess with nport handle collision */
726b8548
QT		 4619 if ((loop_id == other_sess->loop_id) &&
4620 (loop_id != FC_NO_LOOP_ID)) {
e1217dc3 4621 ql_dbg(ql_dbg_disc, vha, 0x1000d,
a6ca8878
AP		 4622 "Invalidating sess %p loop_id %d wwn %llx.\n",
4623 other_sess, other_sess->loop_id, other_wwn);
4624
4625 /* Same loop_id but different s_id
4626 * Ok to kill and logout */
94cff6e1 4627 qlt_schedule_sess_for_deletion(other_sess);
a6ca8878
AP		 4628 }
4629 }
4630
4631 return sess;
4632}
4633
daddf5cf
AP		 4634/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
4635static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
4636{
4637 struct qla_tgt_sess_op *op;
4638 struct qla_tgt_cmd *cmd;
4639 uint32_t key;
4640 int count = 0;
8b631d87 4641 unsigned long flags;
daddf5cf
AP		 4642
4643 key = (((u32)s_id->b.domain << 16) |
4644 ((u32)s_id->b.area << 8) |
4645 ((u32)s_id->b.al_pa));
4646
8b631d87 4647 spin_lock_irqsave(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4648 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
4649 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
41dc529a 4650
daddf5cf
AP		 4651 if (op_key == key) {
4652 op->aborted = true;
4653 count++;
4654 }
4655 }
41dc529a
QT		 4656
4657 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) {
4658 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
bd432bb5 4659
41dc529a
QT		 4660 if (op_key == key) {
4661 op->aborted = true;
4662 count++;
4663 }
4664 }
4665
daddf5cf
AP		 4666 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
4667 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
bd432bb5 4668
daddf5cf 4669 if (cmd_key == key) {
193b50b9 4670 cmd->aborted = 1;
daddf5cf
AP		 4671 count++;
4672 }
4673 }
8b631d87 4674 spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
daddf5cf
AP		 4675
4676 return count;
4677}
4678
9cd883f0
QT		 4679static int qlt_handle_login(struct scsi_qla_host *vha,
4680 struct imm_ntfy_from_isp *iocb)
4681{
4682 struct fc_port *sess = NULL, *conflict_sess = NULL;
4683 uint64_t wwn;
4684 port_id_t port_id;
4685 uint16_t loop_id, wd3_lo;
4686 int res = 0;
4687 struct qlt_plogi_ack_t *pla;
4688 unsigned long flags;
4689
57bf595a
BVA		 4690 lockdep_assert_held(&vha->hw->hardware_lock);
4691
9cd883f0
QT		 4692 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4693
4694 port_id.b.domain = iocb->u.isp24.port_id[2];
4695 port_id.b.area = iocb->u.isp24.port_id[1];
4696 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4697 port_id.b.rsvd_1 = 0;
4698
4699 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4700
4701 /* Mark all stale commands sitting in qla_tgt_wq for deletion */
4702 abort_cmds_for_s_id(vha, &port_id);
4703
4704 if (wwn) {
4705 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
4706 sess = qlt_find_sess_invalidate_other(vha, wwn,
4707 port_id, loop_id, &conflict_sess);
4708 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
aa9e6d7b
QT		 4709 } else {
4710 ql_dbg(ql_dbg_disc, vha, 0xffff,
4711 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ",
4712 __func__, __LINE__, loop_id, port_id.b24);
4713 qlt_send_term_imm_notif(vha, iocb, 1);
4714 goto out;
9cd883f0
QT		 4715 }
4716
4717 if (IS_SW_RESV_ADDR(port_id)) {
4718 res = 1;
4719 goto out;
4720 }
4721
4722 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
4723 if (!pla) {
48acad09
QT		 4724 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
4725 "%s %d %8phC Term INOT due to mem alloc fail",
4726 __func__, __LINE__,
4727 iocb->u.isp24.port_name);
9cd883f0
QT		 4728 qlt_send_term_imm_notif(vha, iocb, 1);
4729 goto out;
4730 }
4731
4732 if (conflict_sess) {
4733 conflict_sess->login_gen++;
4734 qlt_plogi_ack_link(vha, pla, conflict_sess,
4735 QLT_PLOGI_LINK_CONFLICT);
4736 }
4737
4738 if (!sess) {
4739 pla->ref_count++;
4740 ql_dbg(ql_dbg_disc, vha, 0xffff,
4741 "%s %d %8phC post new sess\n",
4742 __func__, __LINE__, iocb->u.isp24.port_name);
a4239945
QT		 4743 if (iocb->u.isp24.status_subcode == ELS_PLOGI)
4744 qla24xx_post_newsess_work(vha, &port_id,
4745 iocb->u.isp24.port_name,
4746 iocb->u.isp24.u.plogi.node_name,
8e0e063a 4747 pla, 0);
a4239945
QT		 4748 else
4749 qla24xx_post_newsess_work(vha, &port_id,
4750 iocb->u.isp24.port_name, NULL,
8e0e063a 4751 pla, 0);
a4239945 4752
9cd883f0
QT		 4753 goto out;
4754 }
4755
cd4ed6b4
QT		 4756 if (sess->disc_state == DSC_UPD_FCPORT) {
4757 u16 sec;
4758
4759 /*
4760 * Remote port registration is still going on from
4761 * previous login. Allow it to finish before we
4762 * accept the new login.
4763 */
4764 sess->next_disc_state = DSC_DELETE_PEND;
4765 sec = jiffies_to_msecs(jiffies -
4766 sess->jiffies_at_registration) / 1000;
4767 if (sess->sec_since_registration < sec && sec &&
4768 !(sec % 5)) {
4769 sess->sec_since_registration = sec;
4770 ql_dbg(ql_dbg_disc, vha, 0xffff,
4771 "%s %8phC - Slow Rport registration (%d Sec)\n",
4772 __func__, sess->port_name, sec);
4773 }
4774
1df627b4
BVA		 4775 if (!conflict_sess) {
4776 list_del(&pla->list);
cd4ed6b4 4777 kmem_cache_free(qla_tgt_plogi_cachep, pla);
1df627b4 4778 }
cd4ed6b4
QT		 4779
4780 qlt_send_term_imm_notif(vha, iocb, 1);
4781 goto out;
4782 }
4783
9cd883f0
QT		 4784 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN);
4785 sess->d_id = port_id;
4786 sess->login_gen++;
4787
4788 if (iocb->u.isp24.status_subcode == ELS_PRLI) {
4789 sess->fw_login_state = DSC_LS_PRLI_PEND;
4790 sess->local = 0;
4791 sess->loop_id = loop_id;
4792 sess->d_id = port_id;
4793 sess->fw_login_state = DSC_LS_PRLI_PEND;
4794 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4795
4796 if (wd3_lo & BIT_7)
4797 sess->conf_compl_supported = 1;
4798
4799 if ((wd3_lo & BIT_4) == 0)
4800 sess->port_type = FCT_INITIATOR;
4801 else
4802 sess->port_type = FCT_TARGET;
4803
4804 } else
4805 sess->fw_login_state = DSC_LS_PLOGI_PEND;
4806
4807
4808 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4809 "%s %d %8phC DS %d\n",
4810 __func__, __LINE__, sess->port_name, sess->disc_state);
4811
4812 switch (sess->disc_state) {
4813 case DSC_DELETED:
5e6b01d8 4814 case DSC_LOGIN_PEND:
9cd883f0
QT		 4815 qlt_plogi_ack_unref(vha, pla);
4816 break;
4817
4818 default:
4819 /*
4820 * Under normal circumstances we want to release nport handle
4821 * during LOGO process to avoid nport handle leaks inside FW.
4822 * The exception is when LOGO is done while another PLOGI with
4823 * the same nport handle is waiting as might be the case here.
4824 * Note: there is always a possibily of a race where session
4825 * deletion has already started for other reasons (e.g. ACL
4826 * removal) and now PLOGI arrives:
4827 * 1. if PLOGI arrived in FW after nport handle has been freed,
4828 * FW must have assigned this PLOGI a new/same handle and we
4829 * can proceed ACK'ing it as usual when session deletion
4830 * completes.
4831 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
4832 * bit reached it, the handle has now been released. We'll
4833 * get an error when we ACK this PLOGI. Nothing will be sent
4834 * back to initiator. Initiator should eventually retry
4835 * PLOGI and situation will correct itself.
4836 */
4837 sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
4838 (sess->d_id.b24 == port_id.b24));
4839
4840 ql_dbg(ql_dbg_disc, vha, 0x20f9,
4841 "%s %d %8phC post del sess\n",
4842 __func__, __LINE__, sess->port_name);
4843
4844
d8630bb9 4845 qlt_schedule_sess_for_deletion(sess);
9cd883f0
QT		 4846 break;
4847 }
4848out:
4849 return res;
4850}
4851
2d70c103
NB		 4852/*
4853 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
4854 */
4855static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
4856 struct imm_ntfy_from_isp *iocb)
4857{
a6ca8878 4858 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
df673274 4859 struct qla_hw_data *ha = vha->hw;
5d964837 4860 struct fc_port *sess = NULL, *conflict_sess = NULL;
a6ca8878
AP		 4861 uint64_t wwn;
4862 port_id_t port_id;
4863 uint16_t loop_id;
4864 uint16_t wd3_lo;
2d70c103 4865 int res = 0;
9cd883f0 4866 unsigned long flags;
2d70c103 4867
57bf595a
BVA		 4868 lockdep_assert_held(&ha->hardware_lock);
4869
a6ca8878
AP		 4870 wwn = wwn_to_u64(iocb->u.isp24.port_name);
4871
4872 port_id.b.domain = iocb->u.isp24.port_id[2];
4873 port_id.b.area = iocb->u.isp24.port_id[1];
4874 port_id.b.al_pa = iocb->u.isp24.port_id[0];
4875 port_id.b.rsvd_1 = 0;
4876
4877 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
4878
726b8548
QT		 4879 ql_dbg(ql_dbg_disc, vha, 0xf026,
4880 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n",
4881 vha->vp_idx, iocb->u.isp24.port_id[2],
4882 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
4883 iocb->u.isp24.status_subcode, loop_id,
4884 iocb->u.isp24.port_name);
2d70c103 4885
a6ca8878
AP		 4886 /* res = 1 means ack at the end of thread
4887 * res = 0 means ack async/later.
4888 */
2d70c103
NB		 4889 switch (iocb->u.isp24.status_subcode) {
4890 case ELS_PLOGI:
9cd883f0
QT		 4891 res = qlt_handle_login(vha, iocb);
4892 break;
a6ca8878 4893
9cd883f0
QT		 4894 case ELS_PRLI:
4895 if (N2N_TOPO(ha)) {
4896 sess = qla2x00_find_fcport_by_wwpn(vha,
4897 iocb->u.isp24.port_name, 1);
726b8548 4898
9cd883f0
QT		 4899 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) {
4900 ql_dbg(ql_dbg_disc, vha, 0xffff,
4901 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n",
4902 __func__, __LINE__,
4903 iocb->u.isp24.port_name);
4904 qlt_send_term_imm_notif(vha, iocb, 1);
4905 break;
4906 }
726b8548 4907
9cd883f0 4908 res = qlt_handle_login(vha, iocb);
726b8548
QT		 4909 break;
4910 }
4911
a4239945
QT		 4912 if (IS_SW_RESV_ADDR(port_id)) {
4913 res = 1;
4914 break;
4915 }
4916
a6ca8878
AP		 4917 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
4918
7560151b
QT		 4919 if (wwn) {
4920 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
726b8548
QT		 4921 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id,
4922 loop_id, &conflict_sess);
7560151b
QT		 4923 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
4924 }
b7bd104e
AP		 4925
4926 if (conflict_sess) {
5ef696aa
QT		 4927 switch (conflict_sess->disc_state) {
4928 case DSC_DELETED:
4929 case DSC_DELETE_PEND:
4930 break;
4931 default:
4932 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
4933 "PRLI with conflicting sess %p port %8phC\n",
4934 conflict_sess, conflict_sess->port_name);
4935 conflict_sess->fw_login_state =
4936 DSC_LS_PORT_UNAVAIL;
4937 qlt_send_term_imm_notif(vha, iocb, 1);
4938 res = 0;
4939 break;
4940 }
b7bd104e 4941 }
a6ca8878
AP		 4942
4943 if (sess != NULL) {
a4239945 4944 bool delete = false;
cd4ed6b4 4945 int sec;
bd432bb5 4946
82abdcaf
QT		 4947 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags);
4948 switch (sess->fw_login_state) {
a4239945 4949 case DSC_LS_PLOGI_PEND:
82abdcaf
QT		 4950 case DSC_LS_PLOGI_COMP:
4951 case DSC_LS_PRLI_COMP:
4952 break;
4953 default:
a4239945
QT		 4954 delete = true;
4955 break;
4956 }
4957
4958 switch (sess->disc_state) {
cd4ed6b4
QT		 4959 case DSC_UPD_FCPORT:
4960 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4961 flags);
4962
4963 sec = jiffies_to_msecs(jiffies -
4964 sess->jiffies_at_registration)/1000;
4965 if (sess->sec_since_registration < sec && sec &&
4966 !(sec % 5)) {
4967 sess->sec_since_registration = sec;
4968 ql_dbg(ql_dbg_disc, sess->vha, 0xffff,
4969 "%s %8phC : Slow Rport registration(%d Sec)\n",
4970 __func__, sess->port_name, sec);
4971 }
4972 qlt_send_term_imm_notif(vha, iocb, 1);
4973 return 0;
4974
a4239945
QT		 4975 case DSC_LOGIN_PEND:
4976 case DSC_GPDB:
a4239945
QT		 4977 case DSC_LOGIN_COMPLETE:
4978 case DSC_ADISC:
4979 delete = false;
4980 break;
4981 default:
4982 break;
4983 }
4984
4985 if (delete) {
82abdcaf
QT		 4986 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock,
4987 flags);
a6ca8878
AP		 4988 /*
4989 * Impatient initiator sent PRLI before last
4990 * PLOGI could finish. Will force him to re-try,
4991 * while last one finishes.
4992 */
df673274 4993 ql_log(ql_log_warn, sess->vha, 0xf095,
a6ca8878
AP		 4994 "sess %p PRLI received, before plogi ack.\n",
4995 sess);
4996 qlt_send_term_imm_notif(vha, iocb, 1);
4997 res = 0;
4998 break;
4999 }
5000
5001 /*
5002 * This shouldn't happen under normal circumstances,
5003 * since we have deleted the old session during PLOGI
5004 */
df673274 5005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
a6ca8878
AP		 5006 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
5007 sess->loop_id, sess, iocb->u.isp24.nport_handle);
5008
5009 sess->local = 0;
5010 sess->loop_id = loop_id;
37cacc0a 5011 sess->d_id = port_id;
726b8548 5012 sess->fw_login_state = DSC_LS_PRLI_PEND;
a6ca8878
AP		 5013
5014 if (wd3_lo & BIT_7)
5015 sess->conf_compl_supported = 1;
5016
726b8548
QT		 5017 if ((wd3_lo & BIT_4) == 0)
5018 sess->port_type = FCT_INITIATOR;
5019 else
5020 sess->port_type = FCT_TARGET;
82abdcaf
QT		 5021
5022 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags);
df673274
AP		 5023 }
5024 res = 1; /* send notify ack */
5025
5026 /* Make session global (not used in fabric mode) */
5027 if (ha->current_topology != ISP_CFG_F) {
ec7193e2 5028 if (sess) {
83548fe2 5029 ql_dbg(ql_dbg_disc, vha, 0x20fa,
ec7193e2
QT		 5030 "%s %d %8phC post nack\n",
5031 __func__, __LINE__, sess->port_name);
5032 qla24xx_post_nack_work(vha, sess, iocb,
5033 SRB_NACK_PRLI);
5034 res = 0;
5035 } else {
5036 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
5037 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
5038 qla2xxx_wake_dpc(vha);
5039 }
a6ca8878 5040 } else {
726b8548 5041 if (sess) {
83548fe2 5042 ql_dbg(ql_dbg_disc, vha, 0x20fb,
ec7193e2
QT		 5043 "%s %d %8phC post nack\n",
5044 __func__, __LINE__, sess->port_name);
726b8548
QT		 5045 qla24xx_post_nack_work(vha, sess, iocb,
5046 SRB_NACK_PRLI);
5047 res = 0;
5048 }
5049 }
a6ca8878
AP		 5050 break;
5051
41dc529a
QT		 5052 case ELS_TPRLO:
5053 if (le16_to_cpu(iocb->u.isp24.flags) &
5054 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) {
5055 loop_id = 0xFFFF;
5056 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS);
5057 res = 1;
5058 break;
5059 }
df561f66 5060 fallthrough;
2d70c103
NB		 5061 case ELS_LOGO:
5062 case ELS_PRLO:
726b8548
QT		 5063 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
5064 sess = qla2x00_find_fcport_by_loopid(vha, loop_id);
5065 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
5066
5067 if (sess) {
5068 sess->login_gen++;
5069 sess->fw_login_state = DSC_LS_LOGO_PEND;
726b8548
QT		 5070 sess->logo_ack_needed = 1;
5071 memcpy(sess->iocb, iocb, IOCB_SIZE);
5072 }
5073
2d70c103 5074 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
726b8548 5075
83548fe2 5076 ql_dbg(ql_dbg_disc, vha, 0x20fc,
726b8548
QT		 5077 "%s: logo %llx res %d sess %p ",
5078 __func__, wwn, res, sess);
5079 if (res == 0) {
41dc529a
QT		 5080 /*
5081 * cmd went upper layer, look for qlt_xmit_tm_rsp()
5082 * for LOGO_ACK & sess delete
5083 */
726b8548
QT		 5084 BUG_ON(!sess);
5085 res = 0;
5086 } else {
41dc529a 5087 /* cmd did not go to upper layer. */
726b8548 5088 if (sess) {
d8630bb9 5089 qlt_schedule_sess_for_deletion(sess);
726b8548
QT		 5090 res = 0;
5091 }
5092 /* else logo will be ack */
5093 }
2d70c103
NB		 5094 break;
5095 case ELS_PDISC:
5096 case ELS_ADISC:
5097 {
0e8cd71c 5098 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
bd432bb5 5099
2d70c103 5100 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5101 qlt_send_notify_ack(ha->base_qpair,
5102 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5103 tgt->link_reinit_iocb_pending = 0;
5104 }
726b8548
QT		 5105
5106 sess = qla2x00_find_fcport_by_wwpn(vha,
5107 iocb->u.isp24.port_name, 1);
5108 if (sess) {
83548fe2 5109 ql_dbg(ql_dbg_disc, vha, 0x20fd,
726b8548
QT		 5110 "sess %p lid %d|%d DS %d LS %d\n",
5111 sess, sess->loop_id, loop_id,
5112 sess->disc_state, sess->fw_login_state);
5113 }
5114
2d70c103
NB		 5115 res = 1; /* send notify ack */
5116 break;
5117 }
5118
a6ca8878 5119 case ELS_FLOGI: /* should never happen */
2d70c103
NB		 5120 default:
5121 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
5122 "qla_target(%d): Unsupported ELS command %x "
5123 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
5124 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
5125 break;
5126 }
5127
9cd883f0
QT		 5128 ql_dbg(ql_dbg_disc, vha, 0xf026,
5129 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n",
5130 vha->vp_idx, iocb->u.isp24.status_subcode, res);
5131
2d70c103
NB		 5132 return res;
5133}
5134
2d70c103
NB		 5135/*
5136 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5137 */
5138static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
5139 struct imm_ntfy_from_isp *iocb)
5140{
5141 struct qla_hw_data *ha = vha->hw;
5142 uint32_t add_flags = 0;
5143 int send_notify_ack = 1;
5144 uint16_t status;
5145
57bf595a
BVA		 5146 lockdep_assert_held(&ha->hardware_lock);
5147
2d70c103
NB		 5148 status = le16_to_cpu(iocb->u.isp2x.status);
5149 switch (status) {
5150 case IMM_NTFY_LIP_RESET:
5151 {
5152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032,
5153 "qla_target(%d): LIP reset (loop %#x), subcode %x\n",
5154 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle),
5155 iocb->u.isp24.status_subcode);
5156
5157 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5158 send_notify_ack = 0;
5159 break;
5160 }
5161
5162 case IMM_NTFY_LIP_LINK_REINIT:
5163 {
0e8cd71c 5164 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
bd432bb5 5165
2d70c103
NB		 5166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033,
5167 "qla_target(%d): LINK REINIT (loop %#x, "
5168 "subcode %x)\n", vha->vp_idx,
5169 le16_to_cpu(iocb->u.isp24.nport_handle),
5170 iocb->u.isp24.status_subcode);
5171 if (tgt->link_reinit_iocb_pending) {
82de802a
QT		 5172 qlt_send_notify_ack(ha->base_qpair,
5173 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0);
2d70c103
NB		 5174 }
5175 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
5176 tgt->link_reinit_iocb_pending = 1;
5177 /*
5178 * QLogic requires to wait after LINK REINIT for possible
5179 * PDISC or ADISC ELS commands
5180 */
5181 send_notify_ack = 0;
5182 break;
5183 }
5184
5185 case IMM_NTFY_PORT_LOGOUT:
5186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034,
5187 "qla_target(%d): Port logout (loop "
5188 "%#x, subcode %x)\n", vha->vp_idx,
5189 le16_to_cpu(iocb->u.isp24.nport_handle),
5190 iocb->u.isp24.status_subcode);
5191
5192 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0)
5193 send_notify_ack = 0;
5194 /* The sessions will be cleared in the callback, if needed */
5195 break;
5196
5197 case IMM_NTFY_GLBL_TPRLO:
5198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035,
5199 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status);
5200 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5201 send_notify_ack = 0;
5202 /* The sessions will be cleared in the callback, if needed */
5203 break;
5204
5205 case IMM_NTFY_PORT_CONFIG:
5206 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036,
5207 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx,
5208 status);
5209 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
5210 send_notify_ack = 0;
5211 /* The sessions will be cleared in the callback, if needed */
5212 break;
5213
5214 case IMM_NTFY_GLBL_LOGO:
5215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a,
5216 "qla_target(%d): Link failure detected\n",
5217 vha->vp_idx);
5218 /* I_T nexus loss */
5219 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
5220 send_notify_ack = 0;
5221 break;
5222
5223 case IMM_NTFY_IOCB_OVERFLOW:
5224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b,
5225 "qla_target(%d): Cannot provide requested "
5226 "capability (IOCB overflowed the immediate notify "
5227 "resource count)\n", vha->vp_idx);
5228 break;
5229
5230 case IMM_NTFY_ABORT_TASK:
5231 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037,
5232 "qla_target(%d): Abort Task (S %08x I %#x -> "
5233 "L %#x)\n", vha->vp_idx,
5234 le16_to_cpu(iocb->u.isp2x.seq_id),
5235 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb),
5236 le16_to_cpu(iocb->u.isp2x.lun));
5237 if (qlt_abort_task(vha, iocb) == 0)
5238 send_notify_ack = 0;
5239 break;
5240
5241 case IMM_NTFY_RESOURCE:
5242 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c,
5243 "qla_target(%d): Out of resources, host %ld\n",
5244 vha->vp_idx, vha->host_no);
5245 break;
5246
5247 case IMM_NTFY_MSG_RX:
5248 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038,
5249 "qla_target(%d): Immediate notify task %x\n",
5250 vha->vp_idx, iocb->u.isp2x.task_flags);
2d70c103
NB		 5251 break;
5252
5253 case IMM_NTFY_ELS:
5254 if (qlt_24xx_handle_els(vha, iocb) == 0)
5255 send_notify_ack = 0;
5256 break;
2d70c103
NB		 5257 default:
5258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
5259 "qla_target(%d): Received unknown immediate "
5260 "notify status %x\n", vha->vp_idx, status);
5261 break;
5262 }
5263
5264 if (send_notify_ack)
82de802a
QT		 5265 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0,
5266 0, 0);
2d70c103
NB		 5267}
5268
5269/*
5270 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5271 * This function sends busy to ISP 2xxx or 24xx.
5272 */
82de802a 5273static int __qlt_send_busy(struct qla_qpair *qpair,
2d70c103
NB		 5274 struct atio_from_isp *atio, uint16_t status)
5275{
82de802a 5276 struct scsi_qla_host *vha = qpair->vha;
2d70c103
NB		 5277 struct ctio7_to_24xx *ctio24;
5278 struct qla_hw_data *ha = vha->hw;
5279 request_t *pkt;
5d964837 5280 struct fc_port *sess = NULL;
7560151b 5281 unsigned long flags;
f7e761f5 5282 u16 temp;
8ea4faf8
QT		 5283 port_id_t id;
5284
df95f39a 5285 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id);
2d70c103 5286
7560151b 5287 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
8ea4faf8 5288 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
7560151b 5289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 5290 if (!sess) {
82de802a 5291 qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
33e79977 5292 return 0;
2d70c103
NB		 5293 }
5294 /* Sending marker isn't necessary, since we called from ISR */
5295
82de802a 5296 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL);
2d70c103 5297 if (!pkt) {
667024a3 5298 ql_dbg(ql_dbg_io, vha, 0x3063,
2d70c103
NB		 5299 "qla_target(%d): %s failed: unable to allocate "
5300 "request packet", vha->vp_idx, __func__);
33e79977 5301 return -ENOMEM;
2d70c103
NB		 5302 }
5303
60a9eadb 5304 qpair->tgt_counters.num_q_full_sent++;
2d70c103
NB		 5305 pkt->entry_count = 1;
5306 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
5307
5308 ctio24 = (struct ctio7_to_24xx *)pkt;
5309 ctio24->entry_type = CTIO_TYPE7;
7ffa5b93 5310 ctio24->nport_handle = cpu_to_le16(sess->loop_id);
ad950360 5311 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
2d70c103 5312 ctio24->vp_index = vha->vp_idx;
df95f39a 5313 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id);
2d70c103 5314 ctio24->exchange_addr = atio->u.isp24.exchange_addr;
f7e761f5 5315 temp = (atio->u.isp24.attr << 9) |
2d70c103 5316 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
f7e761f5
QT		 5317 CTIO7_FLAGS_DONT_RET_CTIO;
5318 ctio24->u.status1.flags = cpu_to_le16(temp);
2d70c103
NB		 5319 /*
5320 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
5321 * if the explicit conformation is used.
5322 */
7ffa5b93
BVA		 5323 ctio24->u.status1.ox_id =
5324 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id));
2d70c103 5325 ctio24->u.status1.scsi_status = cpu_to_le16(status);
e25f7654 5326
7ffa5b93 5327 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
e25f7654
QT		 5328
5329 if (ctio24->u.status1.residual != 0)
7ffa5b93 5330 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER);
e25f7654 5331
63163e06
HM		 5332 /* Memory Barrier */
5333 wmb();
8abfa9e2
QT		 5334 if (qpair->reqq_start_iocbs)
5335 qpair->reqq_start_iocbs(qpair);
5336 else
5337 qla2x00_start_iocbs(vha, qpair->req);
33e79977
QT		 5338 return 0;
5339}
5340
5341/*
5342 * This routine is used to allocate a command for either a QFull condition
5343 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
5344 * out previously.
5345 */
5346static void
5347qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
5348 struct atio_from_isp *atio, uint16_t status, int qfull)
5349{
5350 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
5351 struct qla_hw_data *ha = vha->hw;
5d964837 5352 struct fc_port *sess;
33e79977 5353 struct qla_tgt_cmd *cmd;
82de802a 5354 unsigned long flags;
33e79977
QT		 5355
5356 if (unlikely(tgt->tgt_stop)) {
5357 ql_dbg(ql_dbg_io, vha, 0x300a,
5358 "New command while device %p is shutting down\n", tgt);
5359 return;
5360 }
5361
5362 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
5363 vha->hw->tgt.num_qfull_cmds_dropped++;
5364 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5365 vha->qla_stats.stat_max_qfull_cmds_dropped)
5366 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5367 vha->hw->tgt.num_qfull_cmds_dropped;
5368
5369 ql_dbg(ql_dbg_io, vha, 0x3068,
5370 "qla_target(%d): %s: QFull CMD dropped[%d]\n",
5371 vha->vp_idx, __func__,
5372 vha->hw->tgt.num_qfull_cmds_dropped);
5373
5374 qlt_chk_exch_leak_thresh_hold(vha);
5375 return;
5376 }
5377
5378 sess = ha->tgt.tgt_ops->find_sess_by_s_id
5379 (vha, atio->u.isp24.fcp_hdr.s_id);
5380 if (!sess)
5381 return;
5382
80363e1b
BVA		 5383 cmd = ha->tgt.tgt_ops->get_cmd(sess);
5384 if (!cmd) {
33e79977
QT		 5385 ql_dbg(ql_dbg_io, vha, 0x3009,
5386 "qla_target(%d): %s: Allocation of cmd failed\n",
5387 vha->vp_idx, __func__);
5388
5389 vha->hw->tgt.num_qfull_cmds_dropped++;
5390 if (vha->hw->tgt.num_qfull_cmds_dropped >
fc90adaf
JC		 5391 vha->qla_stats.stat_max_qfull_cmds_dropped)
5392 vha->qla_stats.stat_max_qfull_cmds_dropped =
33e79977
QT		 5393 vha->hw->tgt.num_qfull_cmds_dropped;
5394
5395 qlt_chk_exch_leak_thresh_hold(vha);
5396 return;
5397 }
5398
33e79977
QT		 5399 qlt_incr_num_pend_cmds(vha);
5400 INIT_LIST_HEAD(&cmd->cmd_list);
5401 memcpy(&cmd->atio, atio, sizeof(*atio));
5402
5403 cmd->tgt = vha->vha_tgt.qla_tgt;
5404 cmd->vha = vha;
7c3f8fd1 5405 cmd->reset_count = ha->base_qpair->chip_reset;
33e79977 5406 cmd->q_full = 1;
82de802a 5407 cmd->qpair = ha->base_qpair;
33e79977
QT		 5408
5409 if (qfull) {
5410 cmd->q_full = 1;
5411 /* NOTE: borrowing the state field to carry the status */
5412 cmd->state = status;
5413 } else
5414 cmd->term_exchg = 1;
5415
82de802a 5416 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5417 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
5418
5419 vha->hw->tgt.num_qfull_cmds_alloc++;
5420 if (vha->hw->tgt.num_qfull_cmds_alloc >
fc90adaf
JC		 5421 vha->qla_stats.stat_max_qfull_cmds_alloc)
5422 vha->qla_stats.stat_max_qfull_cmds_alloc =
33e79977 5423 vha->hw->tgt.num_qfull_cmds_alloc;
82de802a 5424 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5425}
5426
5427int
82de802a 5428qlt_free_qfull_cmds(struct qla_qpair *qpair)
33e79977 5429{
82de802a 5430 struct scsi_qla_host *vha = qpair->vha;
33e79977
QT		 5431 struct qla_hw_data *ha = vha->hw;
5432 unsigned long flags;
5433 struct qla_tgt_cmd *cmd, *tcmd;
82de802a 5434 struct list_head free_list, q_full_list;
33e79977
QT		 5435 int rc = 0;
5436
5437 if (list_empty(&ha->tgt.q_full_list))
5438 return 0;
5439
5440 INIT_LIST_HEAD(&free_list);
82de802a 5441 INIT_LIST_HEAD(&q_full_list);
33e79977 5442
82de802a 5443 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
33e79977 5444 if (list_empty(&ha->tgt.q_full_list)) {
82de802a 5445 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
33e79977
QT		 5446 return 0;
5447 }
5448
82de802a
QT		 5449 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list);
5450 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5451
5452 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
5453 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) {
33e79977
QT		 5454 if (cmd->q_full)
5455 /* cmd->state is a borrowed field to hold status */
82de802a 5456 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state);
33e79977 5457 else if (cmd->term_exchg)
82de802a 5458 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio);
33e79977
QT		 5459
5460 if (rc == -ENOMEM)
5461 break;
5462
5463 if (cmd->q_full)
5464 ql_dbg(ql_dbg_io, vha, 0x3006,
5465 "%s: busy sent for ox_id[%04x]\n", __func__,
5466 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5467 else if (cmd->term_exchg)
5468 ql_dbg(ql_dbg_io, vha, 0x3007,
5469 "%s: Term exchg sent for ox_id[%04x]\n", __func__,
5470 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
5471 else
5472 ql_dbg(ql_dbg_io, vha, 0x3008,
5473 "%s: Unexpected cmd in QFull list %p\n", __func__,
5474 cmd);
5475
5476 list_del(&cmd->cmd_list);
5477 list_add_tail(&cmd->cmd_list, &free_list);
5478
5479 /* piggy back on hardware_lock for protection */
5480 vha->hw->tgt.num_qfull_cmds_alloc--;
5481 }
82de802a 5482 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
33e79977
QT		 5483
5484 cmd = NULL;
5485
5486 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
5487 list_del(&cmd->cmd_list);
5488 /* This cmd was never sent to TCM. There is no need
5489 * to schedule free or call free_cmd
5490 */
5491 qlt_free_cmd(cmd);
5492 }
82de802a
QT		 5493
5494 if (!list_empty(&q_full_list)) {
5495 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
5496 list_splice(&q_full_list, &vha->hw->tgt.q_full_list);
5497 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
5498 }
5499
33e79977
QT		 5500 return rc;
5501}
5502
5503static void
82de802a
QT		 5504qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio,
5505 uint16_t status)
33e79977
QT		 5506{
5507 int rc = 0;
82de802a 5508 struct scsi_qla_host *vha = qpair->vha;
33e79977 5509
82de802a 5510 rc = __qlt_send_busy(qpair, atio, status);
33e79977
QT		 5511 if (rc == -ENOMEM)
5512 qlt_alloc_qfull_cmd(vha, atio, status, 1);
5513}
5514
5515static int
82de802a
QT		 5516qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair,
5517 struct atio_from_isp *atio, uint8_t ha_locked)
33e79977
QT		 5518{
5519 struct qla_hw_data *ha = vha->hw;
8b666809 5520 unsigned long flags;
33e79977
QT		 5521
5522 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
5523 return 0;
5524
8b666809
QT		 5525 if (!ha_locked)
5526 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5527 qlt_send_busy(qpair, atio, qla_sam_status);
8b666809
QT		 5528 if (!ha_locked)
5529 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5530
33e79977 5531 return 1;
2d70c103
NB		 5532}
5533
5534/* ha->hardware_lock supposed to be held on entry */
5535/* called via callback from qla2xxx */
5536static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
2f424b9b 5537 struct atio_from_isp *atio, uint8_t ha_locked)
2d70c103
NB		 5538{
5539 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5540 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 5541 int rc;
7cf95f7e 5542 unsigned long flags = 0;
2d70c103
NB		 5543
5544 if (unlikely(tgt == NULL)) {
ec7193e2 5545 ql_dbg(ql_dbg_tgt, vha, 0x3064,
2d70c103
NB		 5546 "ATIO pkt, but no tgt (ha %p)", ha);
5547 return;
5548 }
2d70c103
NB		 5549 /*
5550 * In tgt_stop mode we also should allow all requests to pass.
5551 * Otherwise, some commands can stuck.
5552 */
5553
2f424b9b 5554 tgt->atio_irq_cmd_count++;
2d70c103
NB		 5555
5556 switch (atio->u.raw.entry_type) {
5557 case ATIO_TYPE7:
2d70c103 5558 if (unlikely(atio->u.isp24.exchange_addr ==
7ffa5b93 5559 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) {
667024a3 5560 ql_dbg(ql_dbg_io, vha, 0x3065,
2d70c103
NB		 5561 "qla_target(%d): ATIO_TYPE7 "
5562 "received with UNKNOWN exchange address, "
5563 "sending QUEUE_FULL\n", vha->vp_idx);
2f424b9b
QT		 5564 if (!ha_locked)
5565 spin_lock_irqsave(&ha->hardware_lock, flags);
7cf95f7e 5566 qlt_send_busy(ha->base_qpair, atio, qla_sam_status);
2f424b9b 5567 if (!ha_locked)
82de802a
QT		 5568 spin_unlock_irqrestore(&ha->hardware_lock,
5569 flags);
2d70c103
NB		 5570 break;
5571 }
33e79977 5572
33e79977 5573 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
82de802a
QT		 5574 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair,
5575 atio, ha_locked);
33e79977 5576 if (rc != 0) {
2f424b9b 5577 tgt->atio_irq_cmd_count--;
33e79977
QT		 5578 return;
5579 }
2d70c103 5580 rc = qlt_handle_cmd_for_atio(vha, atio);
33e79977 5581 } else {
2d70c103 5582 rc = qlt_handle_task_mgmt(vha, atio);
33e79977 5583 }
2d70c103 5584 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5585 if (!ha_locked)
5586 spin_lock_irqsave(&ha->hardware_lock, flags);
5587 switch (rc) {
5588 case -ENODEV:
5589 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5590 "qla_target: Unable to send command to target\n");
5591 break;
5592 case -EBADF:
5593 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5594 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
82de802a
QT		 5595 qlt_send_term_exchange(ha->base_qpair, NULL,
5596 atio, 1, 0);
7cf95f7e
QT		 5597 break;
5598 case -EBUSY:
5599 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5600 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5601 vha->vp_idx);
5602 qlt_send_busy(ha->base_qpair, atio,
5603 tc_sam_status);
5604 break;
5605 default:
5606 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5607 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5608 vha->vp_idx);
5609 qlt_send_busy(ha->base_qpair, atio,
5610 qla_sam_status);
5611 break;
2d70c103 5612 }
7cf95f7e
QT		 5613 if (!ha_locked)
5614 spin_unlock_irqrestore(&ha->hardware_lock,
5615 flags);
2d70c103
NB		 5616 }
5617 break;
5618
5619 case IMMED_NOTIFY_TYPE:
5620 {
5621 if (unlikely(atio->u.isp2x.entry_status != 0)) {
5622 ql_dbg(ql_dbg_tgt, vha, 0xe05b,
5623 "qla_target(%d): Received ATIO packet %x "
5624 "with error status %x\n", vha->vp_idx,
5625 atio->u.raw.entry_type,
5626 atio->u.isp2x.entry_status);
5627 break;
5628 }
5629 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO");
2f424b9b
QT		 5630
5631 if (!ha_locked)
5632 spin_lock_irqsave(&ha->hardware_lock, flags);
2d70c103 5633 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
2f424b9b
QT		 5634 if (!ha_locked)
5635 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 5636 break;
5637 }
5638
5639 default:
5640 ql_dbg(ql_dbg_tgt, vha, 0xe05c,
5641 "qla_target(%d): Received unknown ATIO atio "
5642 "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
5643 break;
5644 }
5645
2f424b9b 5646 tgt->atio_irq_cmd_count--;
2d70c103
NB		 5647}
5648
0691094f
QT		 5649/*
5650 * qpair lock is assume to be held
5651 * rc = 0 : send terminate & abts respond
5652 * rc != 0: do not send term & abts respond
5653 */
5654static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha,
5655 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry)
5656{
5657 struct qla_hw_data *ha = vha->hw;
5658 int rc = 0;
5659
5660 /*
5661 * Detect unresolved exchange. If the same ABTS is unable
5662 * to terminate an existing command and the same ABTS loops
5663 * between FW & Driver, then force FW dump. Under 1 jiff,
5664 * we should see multiple loops.
5665 */
5666 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort &&
5667 qpair->retry_term_jiff == jiffies) {
5668 /* found existing exchange */
5669 qpair->retry_term_cnt++;
5670 if (qpair->retry_term_cnt >= 5) {
5671 rc = EIO;
5672 qpair->retry_term_cnt = 0;
5673 ql_log(ql_log_warn, vha, 0xffff,
5674 "Unable to send ABTS Respond. Dumping firmware.\n");
5675 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer,
5676 vha, 0xffff, (uint8_t *)entry, sizeof(*entry));
5677
5678 if (qpair == ha->base_qpair)
8ae17876 5679 ha->isp_ops->fw_dump(vha);
0691094f 5680 else
8ae17876 5681 qla2xxx_dump_fw(vha);
0691094f
QT		 5682
5683 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5684 qla2xxx_wake_dpc(vha);
5685 }
5686 } else if (qpair->retry_term_jiff != jiffies) {
5687 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort;
5688 qpair->retry_term_cnt = 0;
5689 qpair->retry_term_jiff = jiffies;
5690 }
5691
5692 return rc;
5693}
5694
6b0431d6
QT		 5695
5696static void qlt_handle_abts_completion(struct scsi_qla_host *vha,
5697 struct rsp_que *rsp, response_t *pkt)
5698{
5699 struct abts_resp_from_24xx_fw *entry =
5700 (struct abts_resp_from_24xx_fw *)pkt;
5701 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK;
5702 struct qla_tgt_mgmt_cmd *mcmd;
5703 struct qla_hw_data *ha = vha->hw;
5704
81bcf1c5 5705 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt);
6b0431d6
QT		 5706 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) {
5707 ql_dbg(ql_dbg_async, vha, 0xe064,
5708 "qla_target(%d): ABTS Comp without mcmd\n",
5709 vha->vp_idx);
5710 return;
5711 }
5712
5713 if (mcmd)
5714 vha = mcmd->vha;
5715 vha->vha_tgt.qla_tgt->abts_resp_expected--;
5716
5717 ql_dbg(ql_dbg_tgt, vha, 0xe038,
5718 "ABTS_RESP_24XX: compl_status %x\n",
5719 entry->compl_status);
5720
5721 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) {
7ffa5b93
BVA		 5722 if (le32_to_cpu(entry->error_subcode1) == 0x1E &&
5723 le32_to_cpu(entry->error_subcode2) == 0) {
6b0431d6
QT		 5724 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) {
5725 ha->tgt.tgt_ops->free_mcmd(mcmd);
5726 return;
5727 }
5728 qlt_24xx_retry_term_exchange(vha, rsp->qpair,
5729 pkt, mcmd);
5730 } else {
5731 ql_dbg(ql_dbg_tgt, vha, 0xe063,
5732 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)",
5733 vha->vp_idx, entry->compl_status,
5734 entry->error_subcode1,
5735 entry->error_subcode2);
5736 ha->tgt.tgt_ops->free_mcmd(mcmd);
5737 }
e752a04e 5738 } else if (mcmd) {
6b0431d6
QT		 5739 ha->tgt.tgt_ops->free_mcmd(mcmd);
5740 }
5741}
5742
2d70c103
NB		 5743/* ha->hardware_lock supposed to be held on entry */
5744/* called via callback from qla2xxx */
82de802a
QT		 5745static void qlt_response_pkt(struct scsi_qla_host *vha,
5746 struct rsp_que *rsp, response_t *pkt)
2d70c103 5747{
0e8cd71c 5748 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 5749
5750 if (unlikely(tgt == NULL)) {
5751 ql_dbg(ql_dbg_tgt, vha, 0xe05d,
60a9eadb
QT		 5752 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n",
5753 vha->vp_idx, pkt->entry_type, vha->hw);
2d70c103
NB		 5754 return;
5755 }
5756
2d70c103
NB		 5757 /*
5758 * In tgt_stop mode we also should allow all requests to pass.
5759 * Otherwise, some commands can stuck.
5760 */
5761
2d70c103 5762 switch (pkt->entry_type) {
f83adb61 5763 case CTIO_CRC2:
2d70c103
NB		 5764 case CTIO_TYPE7:
5765 {
5766 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
bd432bb5 5767
82de802a 5768 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5769 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5770 entry);
5771 break;
5772 }
5773
5774 case ACCEPT_TGT_IO_TYPE:
5775 {
5776 struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
5777 int rc;
bd432bb5 5778
2d70c103 5779 if (atio->u.isp2x.status !=
ad950360 5780 cpu_to_le16(ATIO_CDB_VALID)) {
2d70c103
NB		 5781 ql_dbg(ql_dbg_tgt, vha, 0xe05e,
5782 "qla_target(%d): ATIO with error "
5783 "status %x received\n", vha->vp_idx,
5784 le16_to_cpu(atio->u.isp2x.status));
5785 break;
5786 }
2d70c103 5787
82de802a 5788 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1);
ba68a635 5789 if (rc != 0)
33e79977 5790 return;
33e79977 5791
2d70c103
NB		 5792 rc = qlt_handle_cmd_for_atio(vha, atio);
5793 if (unlikely(rc != 0)) {
7cf95f7e
QT		 5794 switch (rc) {
5795 case -ENODEV:
5796 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5797 "qla_target: Unable to send command to target\n");
5798 break;
5799 case -EBADF:
5800 ql_dbg(ql_dbg_tgt, vha, 0xe05f,
5801 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
5802 qlt_send_term_exchange(rsp->qpair, NULL,
5803 atio, 1, 0);
5804 break;
5805 case -EBUSY:
5806 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5807 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5808 vha->vp_idx);
5809 qlt_send_busy(rsp->qpair, atio,
5810 tc_sam_status);
5811 break;
5812 default:
5813 ql_dbg(ql_dbg_tgt, vha, 0xe060,
5814 "qla_target(%d): Unable to send command to target, sending BUSY status\n",
5815 vha->vp_idx);
5816 qlt_send_busy(rsp->qpair, atio,
5817 qla_sam_status);
5818 break;
2d70c103
NB		 5819 }
5820 }
5821 }
5822 break;
5823
5824 case CONTINUE_TGT_IO_TYPE:
5825 {
5826 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
bd432bb5 5827
82de802a 5828 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5829 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5830 entry);
5831 break;
5832 }
5833
5834 case CTIO_A64_TYPE:
5835 {
5836 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
bd432bb5 5837
82de802a 5838 qlt_do_ctio_completion(vha, rsp, entry->handle,
2d70c103
NB		 5839 le16_to_cpu(entry->status)|(pkt->entry_status << 16),
5840 entry);
5841 break;
5842 }
5843
5844 case IMMED_NOTIFY_TYPE:
5845 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n");
5846 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt);
5847 break;
5848
5849 case NOTIFY_ACK_TYPE:
5850 if (tgt->notify_ack_expected > 0) {
5851 struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
bd432bb5 5852
2d70c103
NB		 5853 ql_dbg(ql_dbg_tgt, vha, 0xe036,
5854 "NOTIFY_ACK seq %08x status %x\n",
5855 le16_to_cpu(entry->u.isp2x.seq_id),
5856 le16_to_cpu(entry->u.isp2x.status));
5857 tgt->notify_ack_expected--;
5858 if (entry->u.isp2x.status !=
ad950360 5859 cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
2d70c103
NB		 5860 ql_dbg(ql_dbg_tgt, vha, 0xe061,
5861 "qla_target(%d): NOTIFY_ACK "
5862 "failed %x\n", vha->vp_idx,
5863 le16_to_cpu(entry->u.isp2x.status));
5864 }
5865 } else {
5866 ql_dbg(ql_dbg_tgt, vha, 0xe062,
5867 "qla_target(%d): Unexpected NOTIFY_ACK received\n",
5868 vha->vp_idx);
5869 }
5870 break;
5871
5872 case ABTS_RECV_24XX:
5873 ql_dbg(ql_dbg_tgt, vha, 0xe037,
5874 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
5875 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt);
5876 break;
5877
5878 case ABTS_RESP_24XX:
5879 if (tgt->abts_resp_expected > 0) {
6b0431d6 5880 qlt_handle_abts_completion(vha, rsp, pkt);
2d70c103
NB		 5881 } else {
5882 ql_dbg(ql_dbg_tgt, vha, 0xe064,
5883 "qla_target(%d): Unexpected ABTS_RESP_24XX "
5884 "received\n", vha->vp_idx);
5885 }
5886 break;
5887
5888 default:
5889 ql_dbg(ql_dbg_tgt, vha, 0xe065,
5890 "qla_target(%d): Received unknown response pkt "
5891 "type %x\n", vha->vp_idx, pkt->entry_type);
5892 break;
5893 }
5894
2d70c103
NB		 5895}
5896
5897/*
5898 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
5899 */
5900void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
5901 uint16_t *mailbox)
5902{
5903 struct qla_hw_data *ha = vha->hw;
0e8cd71c 5904 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
4f1d0f19 5905 int login_code;
2d70c103 5906
3a33dc95 5907 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped)
2d70c103
NB		 5908 return;
5909
2d70c103
NB		 5910 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) &&
5911 IS_QLA2100(ha))
5912 return;
5913 /*
5914 * In tgt_stop mode we also should allow all requests to pass.
5915 * Otherwise, some commands can stuck.
5916 */
5917
2d70c103
NB		 5918
5919 switch (code) {
5920 case MBA_RESET: /* Reset */
5921 case MBA_SYSTEM_ERR: /* System Error */
5922 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
5923 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
5924 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a,
5925 "qla_target(%d): System error async event %#x "
6efb3c0a 5926 "occurred", vha->vp_idx, code);
2d70c103
NB		 5927 break;
5928 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
5929 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
5930 break;
5931
5932 case MBA_LOOP_UP:
5933 {
5934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
6efb3c0a 5935 "qla_target(%d): Async LOOP_UP occurred "
4f1d0f19 5936 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
7ffa5b93 5937 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
2d70c103 5938 if (tgt->link_reinit_iocb_pending) {
82de802a 5939 qlt_send_notify_ack(ha->base_qpair,
ab053c09 5940 &tgt->link_reinit_iocb,
2d70c103
NB		 5941 0, 0, 0, 0, 0, 0);
5942 tgt->link_reinit_iocb_pending = 0;
5943 }
5944 break;
5945 }
5946
5947 case MBA_LIP_OCCURRED:
5948 case MBA_LOOP_DOWN:
5949 case MBA_LIP_RESET:
5950 case MBA_RSCN_UPDATE:
5951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
6efb3c0a 5952 "qla_target(%d): Async event %#x occurred "
4f1d0f19 5953 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
7ffa5b93 5954 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
2d70c103
NB		 5955 break;
5956
ead03855 5957 case MBA_REJECTED_FCP_CMD:
83548fe2
QT		 5958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017,
5959 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)",
5960 vha->vp_idx,
7ffa5b93 5961 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
ead03855 5962
7ffa5b93 5963 if (mailbox[3] == 1) {
ead03855
QT		 5964 /* exchange starvation. */
5965 vha->hw->exch_starvation++;
5966 if (vha->hw->exch_starvation > 5) {
83548fe2 5967 ql_log(ql_log_warn, vha, 0xd03a,
ead03855
QT		 5968 "Exchange starvation-. Resetting RISC\n");
5969
5970 vha->hw->exch_starvation = 0;
5971 if (IS_P3P_TYPE(vha->hw))
5972 set_bit(FCOE_CTX_RESET_NEEDED,
5973 &vha->dpc_flags);
5974 else
5975 set_bit(ISP_ABORT_NEEDED,
5976 &vha->dpc_flags);
5977 qla2xxx_wake_dpc(vha);
5978 }
5979 }
5980 break;
5981
2d70c103
NB		 5982 case MBA_PORT_UPDATE:
5983 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
5984 "qla_target(%d): Port update async event %#x "
6efb3c0a 5985 "occurred: updating the ports database (m[0]=%x, m[1]=%x, "
4f1d0f19 5986 "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
7ffa5b93 5987 mailbox[0], mailbox[1], mailbox[2], mailbox[3]);
4f1d0f19 5988
7ffa5b93 5989 login_code = mailbox[2];
ead03855 5990 if (login_code == 0x4) {
2d70c103
NB		 5991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
5992 "Async MB 2: Got PLOGI Complete\n");
ead03855
QT		 5993 vha->hw->exch_starvation = 0;
5994 } else if (login_code == 0x7)
2d70c103
NB		 5995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
5996 "Async MB 2: Port Logged Out\n");
5997 break;
2d70c103 5998 default:
2d70c103
NB		 5999 break;
6000 }
6001
2d70c103
NB		 6002}
6003
6004static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
6005 uint16_t loop_id)
6006{
726b8548 6007 fc_port_t *fcport, *tfcp, *del;
2d70c103 6008 int rc;
726b8548
QT		 6009 unsigned long flags;
6010 u8 newfcport = 0;
2d70c103 6011
063b36d6 6012 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2d70c103
NB		 6013 if (!fcport) {
6014 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
6015 "qla_target(%d): Allocation of tmp FC port failed",
6016 vha->vp_idx);
6017 return NULL;
6018 }
6019
2d70c103
NB		 6020 fcport->loop_id = loop_id;
6021
15f30a57 6022 rc = qla24xx_gpdb_wait(vha, fcport, 0);
2d70c103
NB		 6023 if (rc != QLA_SUCCESS) {
6024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070,
6025 "qla_target(%d): Failed to retrieve fcport "
6026 "information -- get_port_database() returned %x "
6027 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
6028 kfree(fcport);
6029 return NULL;
6030 }
6031
726b8548
QT		 6032 del = NULL;
6033 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
6034 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1);
6035
6036 if (tfcp) {
6037 tfcp->d_id = fcport->d_id;
6038 tfcp->port_type = fcport->port_type;
6039 tfcp->supported_classes = fcport->supported_classes;
6040 tfcp->flags |= fcport->flags;
76f9a2dd 6041 tfcp->scan_state = QLA_FCPORT_FOUND;
726b8548
QT		 6042
6043 del = fcport;
6044 fcport = tfcp;
6045 } else {
6046 if (vha->hw->current_topology == ISP_CFG_F)
6047 fcport->flags |= FCF_FABRIC_DEVICE;
6048
6049 list_add_tail(&fcport->list, &vha->vp_fcports);
6050 if (!IS_SW_RESV_ADDR(fcport->d_id))
6051 vha->fcport_count++;
6052 fcport->login_gen++;
27258a57 6053 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE);
726b8548
QT		 6054 fcport->login_succ = 1;
6055 newfcport = 1;
6056 }
6057
6058 fcport->deleted = 0;
6059 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
6060
6061 switch (vha->host->active_mode) {
6062 case MODE_INITIATOR:
6063 case MODE_DUAL:
6064 if (newfcport) {
6065 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) {
cd4ed6b4 6066 qla24xx_sched_upd_fcport(fcport);
726b8548 6067 } else {
83548fe2 6068 ql_dbg(ql_dbg_disc, vha, 0x20ff,
726b8548
QT		 6069 "%s %d %8phC post gpsc fcp_cnt %d\n",
6070 __func__, __LINE__, fcport->port_name, vha->fcport_count);
6071 qla24xx_post_gpsc_work(vha, fcport);
6072 }
6073 }
6074 break;
6075
6076 case MODE_TARGET:
6077 default:
6078 break;
6079 }
6080 if (del)
6081 qla2x00_free_fcport(del);
6082
2d70c103
NB		 6083 return fcport;
6084}
6085
6086/* Must be called under tgt_mutex */
5d964837 6087static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha,
df95f39a 6088 be_id_t s_id)
2d70c103 6089{
5d964837 6090 struct fc_port *sess = NULL;
2d70c103
NB		 6091 fc_port_t *fcport = NULL;
6092 int rc, global_resets;
6093 uint16_t loop_id = 0;
6094
df95f39a 6095 if (s_id.domain == 0xFF && s_id.area == 0xFC) {
726b8548
QT		 6096 /*
6097 * This is Domain Controller, so it should be
6098 * OK to drop SCSI commands from it.
6099 */
6100 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042,
6101 "Unable to find initiator with S_ID %x:%x:%x",
df95f39a 6102 s_id.domain, s_id.area, s_id.al_pa);
726b8548
QT		 6103 return NULL;
6104 }
6105
71cdc079
AP		 6106 mutex_lock(&vha->vha_tgt.tgt_mutex);
6107
2d70c103 6108retry:
0e8cd71c
SK		 6109 global_resets =
6110 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
2d70c103
NB		 6111
6112 rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
6113 if (rc != 0) {
71cdc079
AP		 6114 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6115
726b8548
QT		 6116 ql_log(ql_log_info, vha, 0xf071,
6117 "qla_target(%d): Unable to find "
6118 "initiator with S_ID %x:%x:%x",
df95f39a 6119 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa);
71cdc079
AP		 6120
6121 if (rc == -ENOENT) {
6122 qlt_port_logo_t logo;
bd432bb5 6123
df95f39a 6124 logo.id = be_to_port_id(s_id);
71cdc079
AP		 6125 logo.cmd_count = 1;
6126 qlt_send_first_logo(vha, &logo);
6127 }
6128
2d70c103
NB		 6129 return NULL;
6130 }
6131
6132 fcport = qlt_get_port_database(vha, loop_id);
71cdc079
AP		 6133 if (!fcport) {
6134 mutex_unlock(&vha->vha_tgt.tgt_mutex);
2d70c103 6135 return NULL;
71cdc079 6136 }
2d70c103
NB		 6137
6138 if (global_resets !=
0e8cd71c 6139 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) {
2d70c103
NB		 6140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043,
6141 "qla_target(%d): global reset during session discovery "
6142 "(counter was %d, new %d), retrying", vha->vp_idx,
6143 global_resets,
0e8cd71c
SK		 6144 atomic_read(&vha->vha_tgt.
6145 qla_tgt->tgt_global_resets_count));
2d70c103
NB		 6146 goto retry;
6147 }
6148
6149 sess = qlt_create_sess(vha, fcport, true);
6150
71cdc079
AP		 6151 mutex_unlock(&vha->vha_tgt.tgt_mutex);
6152
2d70c103
NB		 6153 return sess;
6154}
6155
6156static void qlt_abort_work(struct qla_tgt *tgt,
6157 struct qla_tgt_sess_work_param *prm)
6158{
6159 struct scsi_qla_host *vha = tgt->vha;
6160 struct qla_hw_data *ha = vha->hw;
5d964837 6161 struct fc_port *sess = NULL;
7560151b 6162 unsigned long flags = 0, flags2 = 0;
df95f39a 6163 be_id_t s_id;
2d70c103
NB		 6164 int rc;
6165
7560151b 6166 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103
NB		 6167
6168 if (tgt->tgt_stop)
7560151b 6169 goto out_term2;
2d70c103 6170
df95f39a 6171 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id);
2d70c103 6172
ac452b8e 6173 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
2d70c103 6174 if (!sess) {
7560151b 6175 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
2d70c103 6176
2d70c103
NB		 6177 sess = qlt_make_local_sess(vha, s_id);
6178 /* sess has got an extra creation ref */
2d70c103 6179
7560151b 6180 spin_lock_irqsave(&ha->tgt.sess_lock, flags2);
2d70c103 6181 if (!sess)
7560151b 6182 goto out_term2;
2d70c103 6183 } else {
726b8548 6184 if (sess->deleted) {
e52a8b45 6185 sess = NULL;
7560151b 6186 goto out_term2;
e52a8b45
AP		 6187 }
6188
726b8548 6189 if (!kref_get_unless_zero(&sess->sess_kref)) {
83548fe2 6190 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c,
726b8548
QT		 6191 "%s: kref_get fail %8phC \n",
6192 __func__, sess->port_name);
6193 sess = NULL;
6194 goto out_term2;
6195 }
2d70c103
NB		 6196 }
6197
2d70c103 6198 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
f159b3c7
QT		 6199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6200
300ec741
BVA		 6201 ha->tgt.tgt_ops->put_sess(sess);
6202
2d70c103
NB		 6203 if (rc != 0)
6204 goto out_term;
2d70c103
NB		 6205 return;
6206
7560151b 6207out_term2:
300ec741
BVA		 6208 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2);
6209
2d70c103 6210out_term:
f159b3c7 6211 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a
QT		 6212 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts,
6213 FCP_TMF_REJECTED, false);
7560151b 6214 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2d70c103
NB		 6215}
6216
6217static void qlt_tmr_work(struct qla_tgt *tgt,
6218 struct qla_tgt_sess_work_param *prm)
6219{
6220 struct atio_from_isp *a = &prm->tm_iocb2;
6221 struct scsi_qla_host *vha = tgt->vha;
6222 struct qla_hw_data *ha = vha->hw;
bb6abdd4 6223 struct fc_port *sess;
2d70c103 6224 unsigned long flags;
df95f39a 6225 be_id_t s_id;
2d70c103 6226 int rc;
f775bd14 6227 u64 unpacked_lun;
52c82823 6228 int fn;
2d70c103
NB		 6229 void *iocb;
6230
7560151b 6231 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103
NB		 6232
6233 if (tgt->tgt_stop)
f159b3c7 6234 goto out_term2;
2d70c103
NB		 6235
6236 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
6237 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
6238 if (!sess) {
7560151b 6239 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6240
2d70c103
NB		 6241 sess = qlt_make_local_sess(vha, s_id);
6242 /* sess has got an extra creation ref */
2d70c103 6243
7560151b 6244 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
2d70c103 6245 if (!sess)
f159b3c7 6246 goto out_term2;
2d70c103 6247 } else {
726b8548 6248 if (sess->deleted) {
f159b3c7 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, 0xf020,
726b8548
QT		 6254 "%s: kref_get fail %8phC\n",
6255 __func__, sess->port_name);
f159b3c7 6256 goto out_term2;
726b8548 6257 }
2d70c103
NB		 6258 }
6259
6260 iocb = a;
2d70c103 6261 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
f775bd14
QT		 6262 unpacked_lun =
6263 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun);
2d70c103
NB		 6264
6265 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
7560151b 6266 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
f159b3c7 6267
300ec741
BVA		 6268 ha->tgt.tgt_ops->put_sess(sess);
6269
f159b3c7
QT		 6270 if (rc != 0)
6271 goto out_term;
2d70c103
NB		 6272 return;
6273
f159b3c7 6274out_term2:
f159b3c7 6275 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
2d70c103 6276out_term:
82de802a 6277 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
2d70c103
NB		 6278}
6279
6280static void qlt_sess_work_fn(struct work_struct *work)
6281{
6282 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work);
6283 struct scsi_qla_host *vha = tgt->vha;
6284 unsigned long flags;
6285
6286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt);
6287
6288 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6289 while (!list_empty(&tgt->sess_works_list)) {
6290 struct qla_tgt_sess_work_param *prm = list_entry(
6291 tgt->sess_works_list.next, typeof(*prm),
6292 sess_works_list_entry);
6293
6294 /*
6295 * This work can be scheduled on several CPUs at time, so we
6296 * must delete the entry to eliminate double processing
6297 */
6298 list_del(&prm->sess_works_list_entry);
6299
6300 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6301
6302 switch (prm->type) {
6303 case QLA_TGT_SESS_WORK_ABORT:
6304 qlt_abort_work(tgt, prm);
6305 break;
6306 case QLA_TGT_SESS_WORK_TM:
6307 qlt_tmr_work(tgt, prm);
6308 break;
6309 default:
6310 BUG_ON(1);
6311 break;
6312 }
6313
6314 spin_lock_irqsave(&tgt->sess_work_lock, flags);
6315
6316 kfree(prm);
6317 }
6318 spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
6319}
6320
6321/* Must be called under tgt_host_action_mutex */
6322int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
6323{
6324 struct qla_tgt *tgt;
e326d22a
QT		 6325 int rc, i;
6326 struct qla_qpair_hint *h;
2d70c103
NB		 6327
6328 if (!QLA_TGT_MODE_ENABLED())
6329 return 0;
6330
33c36c0a
AE		 6331 if (!IS_TGT_MODE_CAPABLE(ha)) {
6332 ql_log(ql_log_warn, base_vha, 0xe070,
6333 "This adapter does not support target mode.\n");
6334 return 0;
6335 }
6336
2d70c103 6337 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b,
0e8cd71c 6338 "Registering target for host %ld(%p).\n", base_vha->host_no, ha);
2d70c103 6339
0e8cd71c 6340 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL);
2d70c103
NB		 6341
6342 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
6343 if (!tgt) {
6344 ql_dbg(ql_dbg_tgt, base_vha, 0xe066,
6345 "Unable to allocate struct qla_tgt\n");
6346 return -ENOMEM;
6347 }
6348
6396bb22
KC		 6349 tgt->qphints = kcalloc(ha->max_qpairs + 1,
6350 sizeof(struct qla_qpair_hint),
6351 GFP_KERNEL);
e326d22a
QT		 6352 if (!tgt->qphints) {
6353 kfree(tgt);
6354 ql_log(ql_log_warn, base_vha, 0x0197,
6355 "Unable to allocate qpair hints.\n");
6356 return -ENOMEM;
6357 }
6358
2d70c103
NB		 6359 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
6360 base_vha->host->hostt->supported_mode |= MODE_TARGET;
6361
e326d22a
QT		 6362 rc = btree_init64(&tgt->lun_qpair_map);
6363 if (rc) {
6364 kfree(tgt->qphints);
6365 kfree(tgt);
6366 ql_log(ql_log_info, base_vha, 0x0198,
6367 "Unable to initialize lun_qpair_map btree\n");
6368 return -EIO;
6369 }
6370 h = &tgt->qphints[0];
6371 h->qpair = ha->base_qpair;
6372 INIT_LIST_HEAD(&h->hint_elem);
6373 h->cpuid = ha->base_qpair->cpuid;
6374 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list);
6375
6376 for (i = 0; i < ha->max_qpairs; i++) {
6377 unsigned long flags;
6378
6379 struct qla_qpair *qpair = ha->queue_pair_map[i];
bd432bb5 6380
e326d22a
QT		 6381 h = &tgt->qphints[i + 1];
6382 INIT_LIST_HEAD(&h->hint_elem);
6383 if (qpair) {
6384 h->qpair = qpair;
6385 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
6386 list_add_tail(&h->hint_elem, &qpair->hints_list);
6387 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
6388 h->cpuid = qpair->cpuid;
6389 }
6390 }
6391
2d70c103
NB		 6392 tgt->ha = ha;
6393 tgt->vha = base_vha;
6394 init_waitqueue_head(&tgt->waitQ);
2d70c103 6395 INIT_LIST_HEAD(&tgt->del_sess_list);
2d70c103
NB		 6396 spin_lock_init(&tgt->sess_work_lock);
6397 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
6398 INIT_LIST_HEAD(&tgt->sess_works_list);
2d70c103
NB		 6399 atomic_set(&tgt->tgt_global_resets_count, 0);
6400
0e8cd71c 6401 base_vha->vha_tgt.qla_tgt = tgt;
2d70c103
NB		 6402
6403 ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
6404 "qla_target(%d): using 64 Bit PCI addressing",
6405 base_vha->vp_idx);
2d70c103
NB		 6406 /* 3 is reserved */
6407 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
2d70c103
NB		 6408
6409 mutex_lock(&qla_tgt_mutex);
6410 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
6411 mutex_unlock(&qla_tgt_mutex);
6412
f1443eeb
QT		 6413 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target)
6414 ha->tgt.tgt_ops->add_target(base_vha);
6415
2d70c103
NB		 6416 return 0;
6417}
6418
6419/* Must be called under tgt_host_action_mutex */
6420int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
6421{
0e8cd71c 6422 if (!vha->vha_tgt.qla_tgt)
2d70c103
NB		 6423 return 0;
6424
ddb95145
NB		 6425 if (vha->fc_vport) {
6426 qlt_release(vha->vha_tgt.qla_tgt);
6427 return 0;
6428 }
33e79977
QT		 6429
6430 /* free left over qfull cmds */
6431 qlt_init_term_exchange(vha);
6432
2d70c103
NB		 6433 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
6434 vha->host_no, ha);
0e8cd71c 6435 qlt_release(vha->vha_tgt.qla_tgt);
2d70c103
NB		 6436
6437 return 0;
6438}
6439
482c9dc7
QT		 6440void qlt_remove_target_resources(struct qla_hw_data *ha)
6441{
6442 struct scsi_qla_host *node;
6443 u32 key = 0;
6444
6445 btree_for_each_safe32(&ha->tgt.host_map, key, node)
6446 btree_remove32(&ha->tgt.host_map, key);
6447
6448 btree_destroy32(&ha->tgt.host_map);
6449}
6450
2d70c103
NB		 6451static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
6452 unsigned char *b)
6453{
09434912
BVA		 6454 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name);
6455 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name);
2d70c103 6456 put_unaligned_be64(wwpn, b);
09434912 6457 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b);
2d70c103
NB		 6458}
6459
6460/**
6461 * qla_tgt_lport_register - register lport with external module
6462 *
2d70c103 6463 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
807eb907
BVA		 6464 * @phys_wwpn: physical port WWPN
6465 * @npiv_wwpn: NPIV WWPN
6466 * @npiv_wwnn: NPIV WWNN
2db6228d 6467 * @callback: lport initialization callback for tcm_qla2xxx code
2d70c103 6468 */
49a47f2c
NB		 6469int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
6470 u64 npiv_wwpn, u64 npiv_wwnn,
6471 int (*callback)(struct scsi_qla_host *, void *, u64, u64))
2d70c103
NB		 6472{
6473 struct qla_tgt *tgt;
6474 struct scsi_qla_host *vha;
6475 struct qla_hw_data *ha;
6476 struct Scsi_Host *host;
6477 unsigned long flags;
6478 int rc;
6479 u8 b[WWN_SIZE];
6480
6481 mutex_lock(&qla_tgt_mutex);
6482 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
6483 vha = tgt->vha;
6484 ha = vha->hw;
6485
6486 host = vha->host;
6487 if (!host)
6488 continue;
6489
2d70c103
NB		 6490 if (!(host->hostt->supported_mode & MODE_TARGET))
6491 continue;
6492
0645cb83
QT		 6493 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6494 continue;
6495
2d70c103 6496 spin_lock_irqsave(&ha->hardware_lock, flags);
49a47f2c 6497 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
2d70c103
NB		 6498 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
6499 host->host_no);
6500 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6501 continue;
6502 }
ddb95145
NB		 6503 if (tgt->tgt_stop) {
6504 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n",
6505 host->host_no);
6506 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6507 continue;
6508 }
2d70c103
NB		 6509 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6510
6511 if (!scsi_host_get(host)) {
6512 ql_dbg(ql_dbg_tgt, vha, 0xe068,
6513 "Unable to scsi_host_get() for"
6514 " qla2xxx scsi_host\n");
6515 continue;
6516 }
49a47f2c 6517 qlt_lport_dump(vha, phys_wwpn, b);
2d70c103
NB		 6518
6519 if (memcmp(vha->port_name, b, WWN_SIZE)) {
6520 scsi_host_put(host);
6521 continue;
6522 }
49a47f2c
NB		 6523 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
6524 if (rc != 0)
6525 scsi_host_put(host);
6526
ddb95145 6527 mutex_unlock(&qla_tgt_mutex);
2d70c103
NB		 6528 return rc;
6529 }
6530 mutex_unlock(&qla_tgt_mutex);
6531
6532 return -ENODEV;
6533}
6534EXPORT_SYMBOL(qlt_lport_register);
6535
6536/**
6537 * qla_tgt_lport_deregister - Degister lport
6538 *
6539 * @vha: Registered scsi_qla_host pointer
6540 */
6541void qlt_lport_deregister(struct scsi_qla_host *vha)
6542{
6543 struct qla_hw_data *ha = vha->hw;
6544 struct Scsi_Host *sh = vha->host;
6545 /*
6546 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
6547 */
0e8cd71c 6548 vha->vha_tgt.target_lport_ptr = NULL;
2d70c103
NB		 6549 ha->tgt.tgt_ops = NULL;
6550 /*
6551 * Release the Scsi_Host reference for the underlying qla2xxx host
6552 */
6553 scsi_host_put(sh);
6554}
6555EXPORT_SYMBOL(qlt_lport_deregister);
6556
6557/* Must be called under HW lock */
0645cb83 6558void qlt_set_mode(struct scsi_qla_host *vha)
2d70c103 6559{
0645cb83 6560 switch (vha->qlini_mode) {
2d70c103
NB		 6561 case QLA2XXX_INI_MODE_DISABLED:
6562 case QLA2XXX_INI_MODE_EXCLUSIVE:
6563 vha->host->active_mode = MODE_TARGET;
6564 break;
6565 case QLA2XXX_INI_MODE_ENABLED:
0645cb83 6566 vha->host->active_mode = MODE_INITIATOR;
ead03855
QT		 6567 break;
6568 case QLA2XXX_INI_MODE_DUAL:
6569 vha->host->active_mode = MODE_DUAL;
2d70c103
NB		 6570 break;
6571 default:
6572 break;
6573 }
2d70c103
NB		 6574}
6575
6576/* Must be called under HW lock */
55a9066f 6577static void qlt_clear_mode(struct scsi_qla_host *vha)
2d70c103 6578{
0645cb83 6579 switch (vha->qlini_mode) {
2d70c103
NB		 6580 case QLA2XXX_INI_MODE_DISABLED:
6581 vha->host->active_mode = MODE_UNKNOWN;
6582 break;
6583 case QLA2XXX_INI_MODE_EXCLUSIVE:
6584 vha->host->active_mode = MODE_INITIATOR;
6585 break;
6586 case QLA2XXX_INI_MODE_ENABLED:
ead03855
QT		 6587 case QLA2XXX_INI_MODE_DUAL:
6588 vha->host->active_mode = MODE_INITIATOR;
2d70c103
NB		 6589 break;
6590 default:
6591 break;
6592 }
2d70c103
NB		 6593}
6594
6595/*
6596 * qla_tgt_enable_vha - NO LOCK HELD
6597 *
6598 * host_reset, bring up w/ Target Mode Enabled
6599 */
6600void
6601qlt_enable_vha(struct scsi_qla_host *vha)
6602{
6603 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6604 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103 6605 unsigned long flags;
0e8cd71c 6606 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
2d70c103
NB		 6607
6608 if (!tgt) {
6609 ql_dbg(ql_dbg_tgt, vha, 0xe069,
6610 "Unable to locate qla_tgt pointer from"
6611 " struct qla_hw_data\n");
6612 dump_stack();
6613 return;
6614 }
0645cb83
QT		 6615 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED)
6616 return;
2d70c103 6617
178235f4
QT		 6618 if (ha->tgt.num_act_qpairs > ha->max_qpairs)
6619 ha->tgt.num_act_qpairs = ha->max_qpairs;
2d70c103
NB		 6620 spin_lock_irqsave(&ha->hardware_lock, flags);
6621 tgt->tgt_stopped = 0;
6622 qlt_set_mode(vha);
6623 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6624
b6faaaf7
QT		 6625 mutex_lock(&ha->optrom_mutex);
6626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
6627 "%s.\n", __func__);
0e8cd71c
SK		 6628 if (vha->vp_idx) {
6629 qla24xx_disable_vp(vha);
6630 qla24xx_enable_vp(vha);
6631 } else {
6632 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
6633 qla2xxx_wake_dpc(base_vha);
e6803efa
BVA		 6634 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) !=
6635 QLA_SUCCESS);
0e8cd71c 6636 }
b6faaaf7 6637 mutex_unlock(&ha->optrom_mutex);
2d70c103
NB		 6638}
6639EXPORT_SYMBOL(qlt_enable_vha);
6640
6641/*
6642 * qla_tgt_disable_vha - NO LOCK HELD
6643 *
6644 * Disable Target Mode and reset the adapter
6645 */
55a9066f 6646static void qlt_disable_vha(struct scsi_qla_host *vha)
2d70c103
NB		 6647{
6648 struct qla_hw_data *ha = vha->hw;
0e8cd71c 6649 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
2d70c103
NB		 6650 unsigned long flags;
6651
6652 if (!tgt) {
6653 ql_dbg(ql_dbg_tgt, vha, 0xe06a,
6654 "Unable to locate qla_tgt pointer from"
6655 " struct qla_hw_data\n");
6656 dump_stack();
6657 return;
6658 }
6659
6660 spin_lock_irqsave(&ha->hardware_lock, flags);
6661 qlt_clear_mode(vha);
6662 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6663
6664 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
6665 qla2xxx_wake_dpc(vha);
6b3d16f9
VD		 6666
6667 /*
6668 * We are expecting the offline state.
6669 * QLA_FUNCTION_FAILED means that adapter is offline.
6670 */
e6803efa
BVA		 6671 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
6672 ql_dbg(ql_dbg_tgt, vha, 0xe081,
6b3d16f9 6673 "adapter is offline\n");
2d70c103
NB		 6674}
6675
6676/*
6677 * Called from qla_init.c:qla24xx_vport_create() contex to setup
6678 * the target mode specific struct scsi_qla_host and struct qla_hw_data
6679 * members.
6680 */
6681void
6682qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
6683{
0e8cd71c
SK		 6684 vha->vha_tgt.qla_tgt = NULL;
6685
6686 mutex_init(&vha->vha_tgt.tgt_mutex);
6687 mutex_init(&vha->vha_tgt.tgt_host_action_mutex);
2d70c103
NB		 6688
6689 qlt_clear_mode(vha);
6690
6691 /*
6692 * NOTE: Currently the value is kept the same for <24xx and
6693 * >=24xx ISPs. If it is necessary to change it,
6694 * the check should be added for specific ISPs,
6695 * assigning the value appropriately.
6696 */
6697 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
0e8cd71c
SK		 6698
6699 qlt_add_target(ha, vha);
2d70c103
NB		 6700}
6701
e374f9f5
QT		 6702u8
6703qlt_rff_id(struct scsi_qla_host *vha)
2d70c103 6704{
e374f9f5 6705 u8 fc4_feature = 0;
2d70c103
NB		 6706 /*
6707 * FC-4 Feature bit 0 indicates target functionality to the name server.
6708 */
6709 if (qla_tgt_mode_enabled(vha)) {
e374f9f5 6710 fc4_feature = BIT_0;
2d70c103 6711 } else if (qla_ini_mode_enabled(vha)) {
e374f9f5 6712 fc4_feature = BIT_1;
726b8548 6713 } else if (qla_dual_mode_enabled(vha))
e374f9f5
QT		 6714 fc4_feature = BIT_0 | BIT_1;
6715
6716 return fc4_feature;
2d70c103
NB		 6717}
6718
6719/*
6720 * qlt_init_atio_q_entries() - Initializes ATIO queue entries.
6721 * @ha: HA context
6722 *
6723 * Beginning of ATIO ring has initialization control block already built
6724 * by nvram config routine.
6725 *
6726 * Returns 0 on success.
6727 */
6728void
6729qlt_init_atio_q_entries(struct scsi_qla_host *vha)
6730{
6731 struct qla_hw_data *ha = vha->hw;
6732 uint16_t cnt;
6733 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
6734
ead03855 6735 if (qla_ini_mode_enabled(vha))
2d70c103
NB		 6736 return;
6737
6738 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
7ffa5b93 6739 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
2d70c103
NB		 6740 pkt++;
6741 }
6742
6743}
6744
6745/*
6746 * qlt_24xx_process_atio_queue() - Process ATIO queue entries.
6747 * @ha: SCSI driver HA context
6748 */
6749void
2f424b9b 6750qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked)
2d70c103
NB		 6751{
6752 struct qla_hw_data *ha = vha->hw;
2d70c103
NB		 6753 struct atio_from_isp *pkt;
6754 int cnt, i;
6755
ec7193e2 6756 if (!ha->flags.fw_started)
2d70c103
NB		 6757 return;
6758
5f35509d
QT		 6759 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) ||
6760 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) {
2d70c103
NB		 6761 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6762 cnt = pkt->u.raw.entry_count;
6763
5f35509d
QT		 6764 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) {
6765 /*
6766 * This packet is corrupted. The header + payload
6767 * can not be trusted. There is no point in passing
6768 * it further up.
6769 */
83548fe2 6770 ql_log(ql_log_warn, vha, 0xd03c,
5f35509d 6771 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n",
df95f39a 6772 &pkt->u.isp24.fcp_hdr.s_id,
5f35509d 6773 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id),
7ffa5b93 6774 pkt->u.isp24.exchange_addr, pkt);
5f35509d
QT		 6775
6776 adjust_corrupted_atio(pkt);
82de802a
QT		 6777 qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
6778 ha_locked, 0);
5f35509d
QT		 6779 } else {
6780 qlt_24xx_atio_pkt_all_vps(vha,
6781 (struct atio_from_isp *)pkt, ha_locked);
6782 }
2d70c103
NB		 6783
6784 for (i = 0; i < cnt; i++) {
6785 ha->tgt.atio_ring_index++;
6786 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) {
6787 ha->tgt.atio_ring_index = 0;
6788 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
6789 } else
6790 ha->tgt.atio_ring_ptr++;
6791
7ffa5b93 6792 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED);
2d70c103
NB		 6793 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
6794 }
6795 wmb();
6796 }
6797
6798 /* Adjust ring index */
04474d3a 6799 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index);
2d70c103
NB		 6800}
6801
6802void
aa230bc5 6803qlt_24xx_config_rings(struct scsi_qla_host *vha)
2d70c103
NB		 6804{
6805 struct qla_hw_data *ha = vha->hw;
d2b292c3
QT		 6806 struct qla_msix_entry *msix = &ha->msix_entries[2];
6807 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
6808
aa230bc5
AE		 6809 if (!QLA_TGT_MODE_ENABLED())
6810 return;
2d70c103 6811
04474d3a
BVA		 6812 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0);
6813 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0);
6814 rd_reg_dword(ISP_ATIO_Q_OUT(vha));
aa230bc5 6815
d2b292c3 6816 if (ha->flags.msix_enabled) {
ecc89f25 6817 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
d2b292c3
QT		 6818 if (IS_QLA2071(ha)) {
6819 /* 4 ports Baker: Enable Interrupt Handshake */
6820 icb->msix_atio = 0;
7ffa5b93 6821 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
d2b292c3
QT		 6822 } else {
6823 icb->msix_atio = cpu_to_le16(msix->entry);
7ffa5b93 6824 icb->firmware_options_2 &= cpu_to_le32(~BIT_26);
d2b292c3
QT		 6825 }
6826 ql_dbg(ql_dbg_init, vha, 0xf072,
6827 "Registering ICB vector 0x%x for atio que.\n",
6828 msix->entry);
6829 }
6830 } else {
6831 /* INTx|MSI */
ecc89f25 6832 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
d2b292c3 6833 icb->msix_atio = 0;
7ffa5b93 6834 icb->firmware_options_2 |= cpu_to_le32(BIT_26);
d2b292c3
QT		 6835 ql_dbg(ql_dbg_init, vha, 0xf072,
6836 "%s: Use INTx for ATIOQ.\n", __func__);
6837 }
2d70c103
NB		 6838 }
6839}
6840
6841void
6842qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
6843{
6844 struct qla_hw_data *ha = vha->hw;
9cd883f0 6845 u32 tmp;
99e1b683
QT		 6846
6847 if (!QLA_TGT_MODE_ENABLED())
6848 return;
2d70c103 6849
ead03855 6850 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
2d70c103
NB		 6851 if (!ha->tgt.saved_set) {
6852 /* We save only once */
6853 ha->tgt.saved_exchange_count = nv->exchange_count;
6854 ha->tgt.saved_firmware_options_1 =
6855 nv->firmware_options_1;
6856 ha->tgt.saved_firmware_options_2 =
6857 nv->firmware_options_2;
6858 ha->tgt.saved_firmware_options_3 =
6859 nv->firmware_options_3;
6860 ha->tgt.saved_set = 1;
6861 }
6862
99e1b683 6863 if (qla_tgt_mode_enabled(vha))
ead03855 6864 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683 6865 else /* dual */
0645cb83 6866 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
2d70c103
NB		 6867
6868 /* Enable target mode */
ad950360 6869 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
2d70c103
NB		 6870
6871 /* Disable ini mode, if requested */
726b8548 6872 if (qla_tgt_mode_enabled(vha))
ad950360 6873 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
2d70c103
NB		 6874
6875 /* Disable Full Login after LIP */
ad950360 6876 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
2d70c103 6877 /* Enable initial LIP */
ad950360 6878 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
d154f350
AE		 6879 if (ql2xtgt_tape_enable)
6880 /* Enable FC Tape support */
6881 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6882 else
6883 /* Disable FC Tape support */
6884 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6885
2d70c103 6886 /* Disable Full Login after LIP */
ad950360 6887 nv->host_p &= cpu_to_le32(~BIT_10);
c0f64627
HM		 6888
6889 /*
6890 * clear BIT 15 explicitly as we have seen at least
6891 * a couple of instances where this was set and this
6892 * was causing the firmware to not be initialized.
6893 */
6894 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
2d70c103 6895 /* Enable target PRLI control */
ad950360 6896 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 6897
6898 if (IS_QLA25XX(ha)) {
6899 /* Change Loop-prefer to Pt-Pt */
6900 tmp = ~(BIT_4|BIT_5|BIT_6);
6901 nv->firmware_options_2 &= cpu_to_le32(tmp);
6902 tmp = P2P << 4;
6903 nv->firmware_options_2 |= cpu_to_le32(tmp);
6904 }
2d70c103
NB		 6905 } else {
6906 if (ha->tgt.saved_set) {
6907 nv->exchange_count = ha->tgt.saved_exchange_count;
6908 nv->firmware_options_1 =
6909 ha->tgt.saved_firmware_options_1;
6910 nv->firmware_options_2 =
6911 ha->tgt.saved_firmware_options_2;
6912 nv->firmware_options_3 =
6913 ha->tgt.saved_firmware_options_3;
6914 }
6915 return;
6916 }
6917
7c3f8fd1 6918 if (ha->base_qpair->enable_class_2) {
2d70c103
NB		 6919 if (vha->flags.init_done)
6920 fc_host_supported_classes(vha->host) =
6921 FC_COS_CLASS2 | FC_COS_CLASS3;
6922
ad950360 6923 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
2d70c103
NB		 6924 } else {
6925 if (vha->flags.init_done)
6926 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
6927
ad950360 6928 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
2d70c103
NB		 6929 }
6930}
6931
6932void
6933qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha,
6934 struct init_cb_24xx *icb)
6935{
6936 struct qla_hw_data *ha = vha->hw;
6937
481ce733
QT		 6938 if (!QLA_TGT_MODE_ENABLED())
6939 return;
6940
2d70c103
NB		 6941 if (ha->tgt.node_name_set) {
6942 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 6943 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
2d70c103
NB		 6944 }
6945}
6946
aa230bc5
AE		 6947void
6948qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
6949{
6950 struct qla_hw_data *ha = vha->hw;
9cd883f0 6951 u32 tmp;
aa230bc5
AE		 6952
6953 if (!QLA_TGT_MODE_ENABLED())
6954 return;
6955
ead03855 6956 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
aa230bc5
AE		 6957 if (!ha->tgt.saved_set) {
6958 /* We save only once */
6959 ha->tgt.saved_exchange_count = nv->exchange_count;
6960 ha->tgt.saved_firmware_options_1 =
6961 nv->firmware_options_1;
6962 ha->tgt.saved_firmware_options_2 =
6963 nv->firmware_options_2;
6964 ha->tgt.saved_firmware_options_3 =
6965 nv->firmware_options_3;
6966 ha->tgt.saved_set = 1;
6967 }
6968
99e1b683 6969 if (qla_tgt_mode_enabled(vha))
ead03855 6970 nv->exchange_count = cpu_to_le16(0xFFFF);
99e1b683 6971 else /* dual */
0645cb83 6972 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
aa230bc5
AE		 6973
6974 /* Enable target mode */
ad950360 6975 nv->firmware_options_1 |= cpu_to_le32(BIT_4);
aa230bc5
AE		 6976
6977 /* Disable ini mode, if requested */
726b8548 6978 if (qla_tgt_mode_enabled(vha))
ad950360 6979 nv->firmware_options_1 |= cpu_to_le32(BIT_5);
aa230bc5 6980 /* Disable Full Login after LIP */
ad950360 6981 nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
aa230bc5 6982 /* Enable initial LIP */
ad950360 6983 nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
c0f64627
HM		 6984 /*
6985 * clear BIT 15 explicitly as we have seen at
6986 * least a couple of instances where this was set
6987 * and this was causing the firmware to not be
6988 * initialized.
6989 */
6990 nv->firmware_options_1 &= cpu_to_le32(~BIT_15);
d154f350
AE		 6991 if (ql2xtgt_tape_enable)
6992 /* Enable FC tape support */
6993 nv->firmware_options_2 |= cpu_to_le32(BIT_12);
6994 else
6995 /* Disable FC tape support */
6996 nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
6997
aa230bc5 6998 /* Disable Full Login after LIP */
ad950360 6999 nv->host_p &= cpu_to_le32(~BIT_10);
aa230bc5 7000 /* Enable target PRLI control */
ad950360 7001 nv->firmware_options_2 |= cpu_to_le32(BIT_14);
9cd883f0
QT		 7002
7003 /* Change Loop-prefer to Pt-Pt */
7004 tmp = ~(BIT_4|BIT_5|BIT_6);
7005 nv->firmware_options_2 &= cpu_to_le32(tmp);
7006 tmp = P2P << 4;
7007 nv->firmware_options_2 |= cpu_to_le32(tmp);
aa230bc5
AE		 7008 } else {
7009 if (ha->tgt.saved_set) {
7010 nv->exchange_count = ha->tgt.saved_exchange_count;
7011 nv->firmware_options_1 =
7012 ha->tgt.saved_firmware_options_1;
7013 nv->firmware_options_2 =
7014 ha->tgt.saved_firmware_options_2;
7015 nv->firmware_options_3 =
7016 ha->tgt.saved_firmware_options_3;
7017 }
7018 return;
7019 }
7020
7c3f8fd1 7021 if (ha->base_qpair->enable_class_2) {
aa230bc5
AE		 7022 if (vha->flags.init_done)
7023 fc_host_supported_classes(vha->host) =
7024 FC_COS_CLASS2 | FC_COS_CLASS3;
7025
ad950360 7026 nv->firmware_options_2 |= cpu_to_le32(BIT_8);
aa230bc5
AE		 7027 } else {
7028 if (vha->flags.init_done)
7029 fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
7030
ad950360 7031 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8);
aa230bc5
AE		 7032 }
7033}
7034
7035void
7036qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha,
7037 struct init_cb_81xx *icb)
7038{
7039 struct qla_hw_data *ha = vha->hw;
7040
7041 if (!QLA_TGT_MODE_ENABLED())
7042 return;
7043
7044 if (ha->tgt.node_name_set) {
7045 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
ad950360 7046 icb->firmware_options_1 |= cpu_to_le32(BIT_14);
aa230bc5
AE		 7047 }
7048}
7049
7050void
7051qlt_83xx_iospace_config(struct qla_hw_data *ha)
7052{
7053 if (!QLA_TGT_MODE_ENABLED())
7054 return;
7055
7056 ha->msix_count += 1; /* For ATIO Q */
7057}
7058
2d70c103
NB		 7059
7060void
7061qlt_modify_vp_config(struct scsi_qla_host *vha,
7062 struct vp_config_entry_24xx *vpmod)
7063{
ead03855
QT		 7064 /* enable target mode. Bit5 = 1 => disable */
7065 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
2d70c103 7066 vpmod->options_idx1 &= ~BIT_5;
726b8548 7067
ead03855 7068 /* Disable ini mode, if requested. bit4 = 1 => disable */
726b8548 7069 if (qla_tgt_mode_enabled(vha))
2d70c103
NB		 7070 vpmod->options_idx1 &= ~BIT_4;
7071}
7072
7073void
7074qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
7075{
482c9dc7
QT		 7076 int rc;
7077
2d70c103
NB		 7078 if (!QLA_TGT_MODE_ENABLED())
7079 return;
7080
ecc89f25
JC		 7081 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
7082 IS_QLA28XX(ha)) {
aa230bc5
AE		 7083 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in;
7084 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out;
7085 } else {
7086 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in;
7087 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out;
7088 }
7089
0e8cd71c
SK		 7090 mutex_init(&base_vha->vha_tgt.tgt_mutex);
7091 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex);
41dc529a
QT		 7092
7093 INIT_LIST_HEAD(&base_vha->unknown_atio_list);
7094 INIT_DELAYED_WORK(&base_vha->unknown_atio_work,
7095 qlt_unknown_atio_work_fn);
7096
2d70c103 7097 qlt_clear_mode(base_vha);
482c9dc7
QT		 7098
7099 rc = btree_init32(&ha->tgt.host_map);
7100 if (rc)
83548fe2 7101 ql_log(ql_log_info, base_vha, 0xd03d,
482c9dc7
QT		 7102 "Unable to initialize ha->host_map btree\n");
7103
7104 qlt_update_vp_map(base_vha, SET_VP_IDX);
2d70c103
NB		 7105}
7106
aa230bc5
AE		 7107irqreturn_t
7108qla83xx_msix_atio_q(int irq, void *dev_id)
7109{
7110 struct rsp_que *rsp;
7111 scsi_qla_host_t *vha;
7112 struct qla_hw_data *ha;
7113 unsigned long flags;
7114
7115 rsp = (struct rsp_que *) dev_id;
7116 ha = rsp->hw;
7117 vha = pci_get_drvdata(ha->pdev);
7118
2f424b9b 7119 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
aa230bc5 7120
2f424b9b 7121 qlt_24xx_process_atio_queue(vha, 0);
aa230bc5 7122
2f424b9b 7123 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
aa230bc5
AE		 7124
7125 return IRQ_HANDLED;
7126}
7127
2f424b9b
QT		 7128static void
7129qlt_handle_abts_recv_work(struct work_struct *work)
7130{
7131 struct qla_tgt_sess_op *op = container_of(work,
7132 struct qla_tgt_sess_op, work);
7133 scsi_qla_host_t *vha = op->vha;
7134 struct qla_hw_data *ha = vha->hw;
7135 unsigned long flags;
7136
7c3f8fd1
QT		 7137 if (qla2x00_reset_active(vha) ||
7138 (op->chip_reset != ha->base_qpair->chip_reset))
2f424b9b
QT		 7139 return;
7140
7141 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
7142 qlt_24xx_process_atio_queue(vha, 0);
7143 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
7144
7145 spin_lock_irqsave(&ha->hardware_lock, flags);
82de802a 7146 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio);
2f424b9b 7147 spin_unlock_irqrestore(&ha->hardware_lock, flags);
ae940f2c
QT		 7148
7149 kfree(op);
2f424b9b
QT		 7150}
7151
7152void
82de802a
QT		 7153qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp,
7154 response_t *pkt)
2f424b9b
QT		 7155{
7156 struct qla_tgt_sess_op *op;
7157
7158 op = kzalloc(sizeof(*op), GFP_ATOMIC);
7159
7160 if (!op) {
7161 /* do not reach for ATIO queue here. This is best effort err
7162 * recovery at this point.
7163 */
82de802a 7164 qlt_response_pkt_all_vps(vha, rsp, pkt);
2f424b9b
QT		 7165 return;
7166 }
7167
7168 memcpy(&op->atio, pkt, sizeof(*pkt));
7169 op->vha = vha;
7c3f8fd1 7170 op->chip_reset = vha->hw->base_qpair->chip_reset;
82de802a 7171 op->rsp = rsp;
2f424b9b
QT		 7172 INIT_WORK(&op->work, qlt_handle_abts_recv_work);
7173 queue_work(qla_tgt_wq, &op->work);
7174 return;
7175}
7176
2d70c103
NB		 7177int
7178qlt_mem_alloc(struct qla_hw_data *ha)
7179{
7180 if (!QLA_TGT_MODE_ENABLED())
7181 return 0;
7182
6396bb22
KC		 7183 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC,
7184 sizeof(struct qla_tgt_vp_map),
7185 GFP_KERNEL);
2d70c103
NB		 7186 if (!ha->tgt.tgt_vp_map)
7187 return -ENOMEM;
7188
7189 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev,
7190 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp),
7191 &ha->tgt.atio_dma, GFP_KERNEL);
7192 if (!ha->tgt.atio_ring) {
7193 kfree(ha->tgt.tgt_vp_map);
7194 return -ENOMEM;
7195 }
7196 return 0;
7197}
7198
7199void
7200qlt_mem_free(struct qla_hw_data *ha)
7201{
7202 if (!QLA_TGT_MODE_ENABLED())
7203 return;
7204
7205 if (ha->tgt.atio_ring) {
7206 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) *
7207 sizeof(struct atio_from_isp), ha->tgt.atio_ring,
7208 ha->tgt.atio_dma);
7209 }
5365bf99
BVA		 7210 ha->tgt.atio_ring = NULL;
7211 ha->tgt.atio_dma = 0;
2d70c103 7212 kfree(ha->tgt.tgt_vp_map);
5365bf99 7213 ha->tgt.tgt_vp_map = NULL;
2d70c103
NB		 7214}
7215
7216/* vport_slock to be held by the caller */
7217void
7218qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
7219{
482c9dc7
QT		 7220 void *slot;
7221 u32 key;
7222 int rc;
7223
2d70c103
NB		 7224 if (!QLA_TGT_MODE_ENABLED())
7225 return;
7226
482c9dc7
QT		 7227 key = vha->d_id.b24;
7228
2d70c103
NB		 7229 switch (cmd) {
7230 case SET_VP_IDX:
7231 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
7232 break;
7233 case SET_AL_PA:
482c9dc7
QT		 7234 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7235 if (!slot) {
83548fe2 7236 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018,
482c9dc7
QT		 7237 "Save vha in host_map %p %06x\n", vha, key);
7238 rc = btree_insert32(&vha->hw->tgt.host_map,
7239 key, vha, GFP_ATOMIC);
7240 if (rc)
83548fe2 7241 ql_log(ql_log_info, vha, 0xd03e,
482c9dc7
QT		 7242 "Unable to insert s_id into host_map: %06x\n",
7243 key);
7244 return;
7245 }
83548fe2
QT		 7246 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
7247 "replace existing vha in host_map %p %06x\n", vha, key);
482c9dc7 7248 btree_update32(&vha->hw->tgt.host_map, key, vha);
2d70c103
NB		 7249 break;
7250 case RESET_VP_IDX:
7251 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
7252 break;
7253 case RESET_AL_PA:
83548fe2 7254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
482c9dc7
QT		 7255 "clear vha in host_map %p %06x\n", vha, key);
7256 slot = btree_lookup32(&vha->hw->tgt.host_map, key);
7257 if (slot)
7258 btree_remove32(&vha->hw->tgt.host_map, key);
7259 vha->d_id.b24 = 0;
2d70c103
NB		 7260 break;
7261 }
7262}
7263
482c9dc7
QT		 7264void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id)
7265{
482c9dc7
QT		 7266
7267 if (!vha->d_id.b24) {
482c9dc7
QT		 7268 vha->d_id = id;
7269 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7 7270 } else if (vha->d_id.b24 != id.b24) {
482c9dc7
QT		 7271 qlt_update_vp_map(vha, RESET_AL_PA);
7272 vha->d_id = id;
7273 qlt_update_vp_map(vha, SET_AL_PA);
482c9dc7
QT		 7274 }
7275}
7276
2d70c103
NB		 7277static int __init qlt_parse_ini_mode(void)
7278{
7279 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
7280 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
7281 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
7282 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
7283 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
7284 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
ead03855
QT		 7285 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
7286 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
2d70c103
NB		 7287 else
7288 return false;
7289
7290 return true;
7291}
7292
7293int __init qlt_init(void)
7294{
7295 int ret;
7296
bc04459c
BVA		 7297 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
7298 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
7299
2d70c103
NB		 7300 if (!qlt_parse_ini_mode()) {
7301 ql_log(ql_log_fatal, NULL, 0xe06b,
7302 "qlt_parse_ini_mode() failed\n");
7303 return -EINVAL;
7304 }
7305
7306 if (!QLA_TGT_MODE_ENABLED())
7307 return 0;
7308
2d70c103
NB		 7309 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep",
7310 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct
7311 qla_tgt_mgmt_cmd), 0, NULL);
7312 if (!qla_tgt_mgmt_cmd_cachep) {
83548fe2 7313 ql_log(ql_log_fatal, NULL, 0xd04b,
2d70c103 7314 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
51a07f84 7315 return -ENOMEM;
2d70c103
NB		 7316 }
7317
b7bd104e 7318 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep",
5d964837
QT		 7319 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t),
7320 0, NULL);
b7bd104e
AP		 7321
7322 if (!qla_tgt_plogi_cachep) {
7323 ql_log(ql_log_fatal, NULL, 0xe06d,
7324 "kmem_cache_create for qla_tgt_plogi_cachep failed\n");
7325 ret = -ENOMEM;
7326 goto out_mgmt_cmd_cachep;
7327 }
7328
2d70c103
NB		 7329 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
7330 mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
7331 if (!qla_tgt_mgmt_cmd_mempool) {
7332 ql_log(ql_log_fatal, NULL, 0xe06e,
7333 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
7334 ret = -ENOMEM;
b7bd104e 7335 goto out_plogi_cachep;
2d70c103
NB		 7336 }
7337
7338 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
7339 if (!qla_tgt_wq) {
7340 ql_log(ql_log_fatal, NULL, 0xe06f,
7341 "alloc_workqueue for qla_tgt_wq failed\n");
7342 ret = -ENOMEM;
7343 goto out_cmd_mempool;
7344 }
7345 /*
7346 * Return 1 to signal that initiator-mode is being disabled
7347 */
7348 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
7349
7350out_cmd_mempool:
7351 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e
AP		 7352out_plogi_cachep:
7353 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103
NB		 7354out_mgmt_cmd_cachep:
7355 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103
NB		 7356 return ret;
7357}
7358
7359void qlt_exit(void)
7360{
7361 if (!QLA_TGT_MODE_ENABLED())
7362 return;
7363
7364 destroy_workqueue(qla_tgt_wq);
7365 mempool_destroy(qla_tgt_mgmt_cmd_mempool);
b7bd104e 7366 kmem_cache_destroy(qla_tgt_plogi_cachep);
2d70c103 7367 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
2d70c103 7368}
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