1// SPDX-License-Identifier: GPL-2.0-only 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 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17#include <linux/module.h> 18#include <linux/init.h> 19#include <linux/types.h> 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> 30 31#include "qla_def.h" 32#include "qla_target.h" 33 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 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; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51static int ql_dm_tgt_ex_pct = 0; 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 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 65int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67static int qla_sam_status = SAM_STAT_BUSY; 68static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 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 */ 89#define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 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, 109 struct atio_from_isp *pkt, uint8_t); 110static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118static void qlt_disable_vha(struct scsi_qla_host *vha); 119static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120static void qlt_send_notify_ack(struct qla_qpair *qpair, 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); 124static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 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); 129static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136/* 137 * Global Variables 138 */ 139static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140struct kmem_cache *qla_tgt_plogi_cachep; 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 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} 159 160/* 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} 169 170/* 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); 176 177 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, 189 be_id_t d_id) 190{ 191 struct scsi_qla_host *host; 192 uint32_t key; 193 194 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) 197 return vha; 198 199 key = be_to_port_id(d_id).b24; 200 201 host = btree_lookup32(&vha->hw->tgt.host_map, key); 202 if (!host) 203 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 204 "Unable to find host %06x\n", key); 205 206 return host; 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 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++; 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 233 vha->qla_stats.stat_max_pend_cmds = 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} 245 246 247static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 248 struct atio_from_isp *atio, uint8_t ha_locked) 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) { 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); 258 goto out_term; 259 } 260 261 u = kzalloc(sizeof(*u), GFP_ATOMIC); 262 if (u == NULL) 263 goto out_term; 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: 279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 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) { 294 ql_dbg(ql_dbg_async, vha, 0x502e, 295 "Freeing unknown %s %p, because of Abort\n", 296 "ATIO_TYPE7", u); 297 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 298 &u->atio, ha_locked, 0); 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) { 304 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 305 "Requeuing unknown ATIO_TYPE7 %p\n", u); 306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 307 } else if (tgt->tgt_stop) { 308 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 309 "Freeing unknown %s %p, because tgt is being stopped\n", 310 "ATIO_TYPE7", u); 311 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 312 &u->atio, ha_locked, 0); 313 } else { 314 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 315 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 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 340static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 341 struct atio_from_isp *atio, uint8_t ha_locked) 342{ 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)); 347 348 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, 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); 360 361 362 qlt_queue_unknown_atio(vha, atio, ha_locked); 363 break; 364 } 365 if (unlikely(!list_empty(&vha->unknown_atio_list))) 366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 367 368 qlt_24xx_atio_pkt(host, atio, ha_locked); 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; 377 378 qlt_issue_marker(vha, ha_locked); 379 380 if ((entry->u.isp24.vp_index != 0xFF) && 381 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 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 } 393 qlt_24xx_atio_pkt(host, atio, ha_locked); 394 break; 395 } 396 397 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); 408 unsigned long flags; 409 410 if (unlikely(!host)) { 411 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 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 } 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); 422 break; 423 } 424 425 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 426 427 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 } 433 434 return false; 435} 436 437void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 438 struct rsp_que *rsp, response_t *pkt) 439{ 440 switch (pkt->entry_type) { 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__); 445 fallthrough; 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 } 458 qlt_response_pkt(host, rsp, pkt); 459 break; 460 } 461 462 case IMMED_NOTIFY_TYPE: 463 { 464 struct scsi_qla_host *host; 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 } 476 qlt_response_pkt(host, rsp, pkt); 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 } 498 qlt_response_pkt(host, rsp, pkt); 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 } 515 qlt_response_pkt(host, rsp, pkt); 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 } 532 qlt_response_pkt(host, rsp, pkt); 533 break; 534 } 535 default: 536 qlt_response_pkt(vha, rsp, pkt); 537 break; 538 } 539 540} 541 542/* 543 * All qlt_plogi_ack_t operations are protected by hardware_lock 544 */ 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; 549 550 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 560static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 561{ 562 struct scsi_qla_host *vha = sp->vha; 563 unsigned long flags; 564 565 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); 568 569 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 570 sp->fcport->flags &= ~FCF_ASYNC_SENT; 571 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 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; 578 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 579 sp->fcport->send_els_logo = 0; 580 break; 581 582 case SRB_NACK_PRLI: 583 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 584 sp->fcport->deleted = 0; 585 sp->fcport->send_els_logo = 0; 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++; 592 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 593 qla24xx_sched_upd_fcport(sp->fcport); 594 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 595 } else { 596 sp->fcport->login_retry = 0; 597 qla2x00_set_fcport_disc_state(sp->fcport, 598 DSC_LOGIN_COMPLETE); 599 sp->fcport->deleted = 0; 600 sp->fcport->logout_on_delete = 1; 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); 611 612 sp->free(sp); 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; 630 fcport->deleted = 0; 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"; 645 646 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 647 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 648 649 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 650 sp->done = qla2x00_async_nack_sp_done; 651 652 ql_dbg(ql_dbg_disc, vha, 0x20f4, 653 "Async-%s %8phC hndl %x %s\n", 654 sp->name, fcport->port_name, sp->handle, c); 655 656 rval = qla2x00_start_sp(sp); 657 if (rval != QLA_SUCCESS) 658 goto done_free_sp; 659 660 return rval; 661 662done_free_sp: 663 sp->free(sp); 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; 672 673 switch (e->u.nack.type) { 674 case SRB_NACK_PRLI: 675 t = e->u.nack.fcport; 676 flush_work(&t->del_work); 677 flush_work(&t->free_work); 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) { 682 ql_log(ql_log_info, vha, 0xd034, 683 "%s create sess success %p", __func__, t); 684 /* create sess has an extra kref */ 685 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 686 } 687 break; 688 } 689 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 690 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 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; 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 } 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)) { 745 ql_dbg(ql_dbg_disc, vha, 0x2107, 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 } 772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 773 774 ha->tgt.tgt_ops->put_sess(sess); 775} 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 */ 782static struct qlt_plogi_ack_t * 783qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 784 struct imm_ntfy_from_isp *iocb) 785{ 786 struct qlt_plogi_ack_t *pla; 787 788 lockdep_assert_held(&vha->hw->hardware_lock); 789 790 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 791 if (pla->id.b24 == id->b24) { 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); 796 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 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 } 809 810 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 811 pla->id = *id; 812 list_add_tail(&pla->list, &vha->plogi_ack_list); 813 814 return pla; 815} 816 817void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 818 struct qlt_plogi_ack_t *pla) 819{ 820 struct imm_ntfy_from_isp *iocb = &pla->iocb; 821 port_id_t port_id; 822 uint16_t loop_id; 823 fc_port_t *fcport = pla->fcport; 824 825 BUG_ON(!pla->ref_count); 826 pla->ref_count--; 827 828 if (pla->ref_count) 829 return; 830 831 ql_dbg(ql_dbg_disc, vha, 0x5089, 832 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 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); 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; 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); 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 } 859 860 list_del(&pla->list); 861 kmem_cache_free(qla_tgt_plogi_cachep, pla); 862} 863 864void 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) 867{ 868 struct imm_ntfy_from_isp *iocb = &pla->iocb; 869 /* Inc ref_count first because link might already be pointing at pla */ 870 pla->ref_count++; 871 872 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); 879 880 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 } 890 891 if (sess->plogi_link[link]) 892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 893 894 if (link == QLT_PLOGI_LINK_SAME_WWN) 895 pla->fcport = sess; 896 897 sess->plogi_link[link] = pla; 898} 899 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); 939 940 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); 944} 945 946void qlt_free_session_done(struct work_struct *work) 947{ 948 struct fc_port *sess = container_of(work, struct fc_port, 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; 953 unsigned long flags; 954 bool logout_started = false; 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 956 struct qlt_plogi_ack_t *own = 957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 958 959 ql_dbg(ql_dbg_disc, vha, 0xf084, 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 964 sess->logout_on_delete, sess->keep_nport_handle, 965 sess->send_els_logo); 966 967 if (!IS_SW_RESV_ADDR(sess->d_id)) { 968 qla2x00_mark_device_lost(vha, sess, 0); 969 970 if (sess->send_els_logo) { 971 qlt_port_logo_t logo; 972 973 logo.id = sess->d_id; 974 logo.cmd_count = 0; 975 if (!own) 976 qlt_send_first_logo(vha, &logo); 977 sess->send_els_logo = 0; 978 } 979 980 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 981 int rc; 982 983 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 } 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); 1011 } 1012 } 1013 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 1020 if (logout_started) { 1021 bool traced = false; 1022 u16 cnt = 0; 1023 1024 while (!READ_ONCE(sess->logout_completed)) { 1025 if (!traced) { 1026 ql_dbg(ql_dbg_disc, vha, 0xf086, 1027 "%s: waiting for sess %p logout\n", 1028 __func__, sess); 1029 traced = true; 1030 } 1031 msleep(100); 1032 cnt++; 1033 if (cnt > 200) 1034 break; 1035 } 1036 1037 ql_dbg(ql_dbg_disc, vha, 0xf087, 1038 "%s: sess %p logout completed\n", __func__, sess); 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); 1045 } 1046 1047 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1048 if (sess->se_sess) { 1049 sess->se_sess = NULL; 1050 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1051 tgt->sess_count--; 1052 } 1053 1054 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1055 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1056 1057 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1058 vha->fcport_count--; 1059 sess->login_succ = 0; 1060 } 1061 1062 qla2x00_clear_loop_id(sess); 1063 1064 if (sess->conflict) { 1065 sess->conflict->login_pause = 0; 1066 sess->conflict = NULL; 1067 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1068 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1069 } 1070 1071 { 1072 struct qlt_plogi_ack_t *con = 1073 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1074 struct imm_ntfy_from_isp *iocb; 1075 1076 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1077 1078 if (con) { 1079 iocb = &con->iocb; 1080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1081 "se_sess %p / sess %p port %8phC is gone," 1082 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1083 sess->se_sess, sess, sess->port_name, 1084 own ? "releasing own PLOGI" : "no own PLOGI pending", 1085 own ? own->ref_count : -1, 1086 iocb->u.isp24.port_name, con->ref_count); 1087 qlt_plogi_ack_unref(vha, con); 1088 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1089 } else { 1090 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1091 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1092 sess->se_sess, sess, sess->port_name, 1093 own ? "releasing own PLOGI" : 1094 "no own PLOGI pending", 1095 own ? own->ref_count : -1); 1096 } 1097 1098 if (own) { 1099 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1100 qlt_plogi_ack_unref(vha, own); 1101 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1102 } 1103 } 1104 1105 sess->explicit_logout = 0; 1106 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1107 1108 qla2x00_dfs_remove_rport(vha, sess); 1109 1110 spin_lock_irqsave(&vha->work_lock, flags); 1111 sess->flags &= ~FCF_ASYNC_SENT; 1112 sess->deleted = QLA_SESS_DELETED; 1113 sess->free_pending = 0; 1114 spin_unlock_irqrestore(&vha->work_lock, flags); 1115 1116 ql_dbg(ql_dbg_disc, vha, 0xf001, 1117 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1118 sess, sess->port_name, vha->fcport_count); 1119 1120 if (tgt && (tgt->sess_count == 0)) 1121 wake_up_all(&tgt->waitQ); 1122 1123 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1124 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1125 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1126 switch (vha->host->active_mode) { 1127 case MODE_INITIATOR: 1128 case MODE_DUAL: 1129 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1130 qla2xxx_wake_dpc(vha); 1131 break; 1132 case MODE_TARGET: 1133 default: 1134 /* no-op */ 1135 break; 1136 } 1137 } 1138 1139 if (vha->fcport_count == 0) 1140 wake_up_all(&vha->fcport_waitQ); 1141} 1142 1143/* ha->tgt.sess_lock supposed to be held on entry */ 1144void qlt_unreg_sess(struct fc_port *sess) 1145{ 1146 struct scsi_qla_host *vha = sess->vha; 1147 unsigned long flags; 1148 1149 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1150 "%s sess %p for deletion %8phC\n", 1151 __func__, sess, sess->port_name); 1152 1153 spin_lock_irqsave(&sess->vha->work_lock, flags); 1154 if (sess->free_pending) { 1155 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1156 return; 1157 } 1158 sess->free_pending = 1; 1159 /* 1160 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1161 * management from being sent. 1162 */ 1163 sess->flags |= FCF_ASYNC_SENT; 1164 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1165 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1166 1167 if (sess->se_sess) 1168 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1169 1170 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1171 sess->last_rscn_gen = sess->rscn_gen; 1172 sess->last_login_gen = sess->login_gen; 1173 1174 queue_work(sess->vha->hw->wq, &sess->free_work); 1175} 1176EXPORT_SYMBOL(qlt_unreg_sess); 1177 1178static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1179{ 1180 struct qla_hw_data *ha = vha->hw; 1181 struct fc_port *sess = NULL; 1182 uint16_t loop_id; 1183 int res = 0; 1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1185 unsigned long flags; 1186 1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1188 if (loop_id == 0xFFFF) { 1189 /* Global event */ 1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1194 } else { 1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1198 } 1199 1200 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1201 "Using sess for qla_tgt_reset: %p\n", sess); 1202 if (!sess) { 1203 res = -ESRCH; 1204 return res; 1205 } 1206 1207 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1210 mcmd, loop_id); 1211 1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1213} 1214 1215static void qla24xx_chk_fcp_state(struct fc_port *sess) 1216{ 1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1218 sess->logout_on_delete = 0; 1219 sess->logo_ack_needed = 0; 1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1221 } 1222} 1223 1224void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1225{ 1226 struct qla_tgt *tgt = sess->tgt; 1227 unsigned long flags; 1228 u16 sec; 1229 1230 switch (sess->disc_state) { 1231 case DSC_DELETE_PEND: 1232 return; 1233 case DSC_DELETED: 1234 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1235 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1236 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1237 wake_up_all(&tgt->waitQ); 1238 1239 if (sess->vha->fcport_count == 0) 1240 wake_up_all(&sess->vha->fcport_waitQ); 1241 return; 1242 } 1243 break; 1244 case DSC_UPD_FCPORT: 1245 /* 1246 * This port is not done reporting to upper layer. 1247 * let it finish 1248 */ 1249 sess->next_disc_state = DSC_DELETE_PEND; 1250 sec = jiffies_to_msecs(jiffies - 1251 sess->jiffies_at_registration)/1000; 1252 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1253 sess->sec_since_registration = sec; 1254 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1255 "%s %8phC : Slow Rport registration(%d Sec)\n", 1256 __func__, sess->port_name, sec); 1257 } 1258 return; 1259 default: 1260 break; 1261 } 1262 1263 spin_lock_irqsave(&sess->vha->work_lock, flags); 1264 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1265 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1266 return; 1267 } 1268 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1270 1271 sess->prli_pend_timer = 0; 1272 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1273 1274 qla24xx_chk_fcp_state(sess); 1275 1276 ql_dbg(ql_dbg_disc, sess->vha, 0xe001, 1277 "Scheduling sess %p for deletion %8phC\n", 1278 sess, sess->port_name); 1279 1280 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1281} 1282 1283static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1284{ 1285 struct fc_port *sess; 1286 scsi_qla_host_t *vha = tgt->vha; 1287 1288 list_for_each_entry(sess, &vha->vp_fcports, list) { 1289 if (sess->se_sess) 1290 qlt_schedule_sess_for_deletion(sess); 1291 } 1292 1293 /* At this point tgt could be already dead */ 1294} 1295 1296static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1297 uint16_t *loop_id) 1298{ 1299 struct qla_hw_data *ha = vha->hw; 1300 dma_addr_t gid_list_dma; 1301 struct gid_list_info *gid_list, *gid; 1302 int res, rc, i; 1303 uint16_t entries; 1304 1305 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1306 &gid_list_dma, GFP_KERNEL); 1307 if (!gid_list) { 1308 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1309 "qla_target(%d): DMA Alloc failed of %u\n", 1310 vha->vp_idx, qla2x00_gid_list_size(ha)); 1311 return -ENOMEM; 1312 } 1313 1314 /* Get list of logged in devices */ 1315 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1316 if (rc != QLA_SUCCESS) { 1317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1318 "qla_target(%d): get_id_list() failed: %x\n", 1319 vha->vp_idx, rc); 1320 res = -EBUSY; 1321 goto out_free_id_list; 1322 } 1323 1324 gid = gid_list; 1325 res = -ENOENT; 1326 for (i = 0; i < entries; i++) { 1327 if (gid->al_pa == s_id.al_pa && 1328 gid->area == s_id.area && 1329 gid->domain == s_id.domain) { 1330 *loop_id = le16_to_cpu(gid->loop_id); 1331 res = 0; 1332 break; 1333 } 1334 gid = (void *)gid + ha->gid_list_info_size; 1335 } 1336 1337out_free_id_list: 1338 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1339 gid_list, gid_list_dma); 1340 return res; 1341} 1342 1343/* 1344 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1345 * Caller must put it. 1346 */ 1347static struct fc_port *qlt_create_sess( 1348 struct scsi_qla_host *vha, 1349 fc_port_t *fcport, 1350 bool local) 1351{ 1352 struct qla_hw_data *ha = vha->hw; 1353 struct fc_port *sess = fcport; 1354 unsigned long flags; 1355 1356 if (vha->vha_tgt.qla_tgt->tgt_stop) 1357 return NULL; 1358 1359 if (fcport->se_sess) { 1360 if (!kref_get_unless_zero(&sess->sess_kref)) { 1361 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1362 "%s: kref_get_unless_zero failed for %8phC\n", 1363 __func__, sess->port_name); 1364 return NULL; 1365 } 1366 return fcport; 1367 } 1368 sess->tgt = vha->vha_tgt.qla_tgt; 1369 sess->local = local; 1370 1371 /* 1372 * Under normal circumstances we want to logout from firmware when 1373 * session eventually ends and release corresponding nport handle. 1374 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1375 * code will adjust these flags as necessary. 1376 */ 1377 sess->logout_on_delete = 1; 1378 sess->keep_nport_handle = 0; 1379 sess->logout_completed = 0; 1380 1381 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1382 &fcport->port_name[0], sess) < 0) { 1383 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1384 "(%d) %8phC check_initiator_node_acl failed\n", 1385 vha->vp_idx, fcport->port_name); 1386 return NULL; 1387 } else { 1388 kref_init(&fcport->sess_kref); 1389 /* 1390 * Take an extra reference to ->sess_kref here to handle 1391 * fc_port access across ->tgt.sess_lock reaquire. 1392 */ 1393 if (!kref_get_unless_zero(&sess->sess_kref)) { 1394 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1395 "%s: kref_get_unless_zero failed for %8phC\n", 1396 __func__, sess->port_name); 1397 return NULL; 1398 } 1399 1400 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1401 if (!IS_SW_RESV_ADDR(sess->d_id)) 1402 vha->vha_tgt.qla_tgt->sess_count++; 1403 1404 qlt_do_generation_tick(vha, &sess->generation); 1405 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1406 } 1407 1408 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1409 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1410 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1411 vha->vha_tgt.qla_tgt->sess_count); 1412 1413 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1414 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1415 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1416 vha->vp_idx, local ? "local " : "", fcport->port_name, 1417 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1418 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1419 1420 return sess; 1421} 1422 1423/* 1424 * max_gen - specifies maximum session generation 1425 * at which this deletion requestion is still valid 1426 */ 1427void 1428qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1429{ 1430 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1431 struct fc_port *sess = fcport; 1432 unsigned long flags; 1433 1434 if (!vha->hw->tgt.tgt_ops) 1435 return; 1436 1437 if (!tgt) 1438 return; 1439 1440 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1441 if (tgt->tgt_stop) { 1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1443 return; 1444 } 1445 if (!sess->se_sess) { 1446 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1447 return; 1448 } 1449 1450 if (max_gen - sess->generation < 0) { 1451 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1452 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1453 "Ignoring stale deletion request for se_sess %p / sess %p" 1454 " for port %8phC, req_gen %d, sess_gen %d\n", 1455 sess->se_sess, sess, sess->port_name, max_gen, 1456 sess->generation); 1457 return; 1458 } 1459 1460 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1461 1462 sess->local = 1; 1463 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1464 qlt_schedule_sess_for_deletion(sess); 1465} 1466 1467static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1468{ 1469 struct qla_hw_data *ha = tgt->ha; 1470 unsigned long flags; 1471 int res; 1472 /* 1473 * We need to protect against race, when tgt is freed before or 1474 * inside wake_up() 1475 */ 1476 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1477 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1478 "tgt %p, sess_count=%d\n", 1479 tgt, tgt->sess_count); 1480 res = (tgt->sess_count == 0); 1481 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1482 1483 return res; 1484} 1485 1486/* Called by tcm_qla2xxx configfs code */ 1487int qlt_stop_phase1(struct qla_tgt *tgt) 1488{ 1489 struct scsi_qla_host *vha = tgt->vha; 1490 struct qla_hw_data *ha = tgt->ha; 1491 unsigned long flags; 1492 1493 mutex_lock(&ha->optrom_mutex); 1494 mutex_lock(&qla_tgt_mutex); 1495 1496 if (tgt->tgt_stop || tgt->tgt_stopped) { 1497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1498 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1499 mutex_unlock(&qla_tgt_mutex); 1500 mutex_unlock(&ha->optrom_mutex); 1501 return -EPERM; 1502 } 1503 1504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1505 vha->host_no, vha); 1506 /* 1507 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1508 * Lock is needed, because we still can get an incoming packet. 1509 */ 1510 mutex_lock(&vha->vha_tgt.tgt_mutex); 1511 tgt->tgt_stop = 1; 1512 qlt_clear_tgt_db(tgt); 1513 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1514 mutex_unlock(&qla_tgt_mutex); 1515 1516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1517 "Waiting for sess works (tgt %p)", tgt); 1518 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1519 while (!list_empty(&tgt->sess_works_list)) { 1520 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1521 flush_scheduled_work(); 1522 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1523 } 1524 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1525 1526 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1527 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1528 1529 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1530 1531 /* Big hammer */ 1532 if (!ha->flags.host_shutting_down && 1533 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1534 qlt_disable_vha(vha); 1535 1536 /* Wait for sessions to clear out (just in case) */ 1537 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1538 mutex_unlock(&ha->optrom_mutex); 1539 1540 return 0; 1541} 1542EXPORT_SYMBOL(qlt_stop_phase1); 1543 1544/* Called by tcm_qla2xxx configfs code */ 1545void qlt_stop_phase2(struct qla_tgt *tgt) 1546{ 1547 scsi_qla_host_t *vha = tgt->vha; 1548 1549 if (tgt->tgt_stopped) { 1550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1551 "Already in tgt->tgt_stopped state\n"); 1552 dump_stack(); 1553 return; 1554 } 1555 if (!tgt->tgt_stop) { 1556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1557 "%s: phase1 stop is not completed\n", __func__); 1558 dump_stack(); 1559 return; 1560 } 1561 1562 mutex_lock(&tgt->ha->optrom_mutex); 1563 mutex_lock(&vha->vha_tgt.tgt_mutex); 1564 tgt->tgt_stop = 0; 1565 tgt->tgt_stopped = 1; 1566 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1567 mutex_unlock(&tgt->ha->optrom_mutex); 1568 1569 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1570 tgt); 1571 1572 switch (vha->qlini_mode) { 1573 case QLA2XXX_INI_MODE_EXCLUSIVE: 1574 vha->flags.online = 1; 1575 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1576 break; 1577 default: 1578 break; 1579 } 1580} 1581EXPORT_SYMBOL(qlt_stop_phase2); 1582 1583/* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1584static void qlt_release(struct qla_tgt *tgt) 1585{ 1586 scsi_qla_host_t *vha = tgt->vha; 1587 void *node; 1588 u64 key = 0; 1589 u16 i; 1590 struct qla_qpair_hint *h; 1591 struct qla_hw_data *ha = vha->hw; 1592 1593 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1594 qlt_stop_phase1(tgt); 1595 1596 if (!tgt->tgt_stopped) 1597 qlt_stop_phase2(tgt); 1598 1599 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1600 unsigned long flags; 1601 1602 h = &tgt->qphints[i]; 1603 if (h->qpair) { 1604 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1605 list_del(&h->hint_elem); 1606 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1607 h->qpair = NULL; 1608 } 1609 } 1610 kfree(tgt->qphints); 1611 mutex_lock(&qla_tgt_mutex); 1612 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1613 mutex_unlock(&qla_tgt_mutex); 1614 1615 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1616 btree_remove64(&tgt->lun_qpair_map, key); 1617 1618 btree_destroy64(&tgt->lun_qpair_map); 1619 1620 if (vha->vp_idx) 1621 if (ha->tgt.tgt_ops && 1622 ha->tgt.tgt_ops->remove_target && 1623 vha->vha_tgt.target_lport_ptr) 1624 ha->tgt.tgt_ops->remove_target(vha); 1625 1626 vha->vha_tgt.qla_tgt = NULL; 1627 1628 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1629 "Release of tgt %p finished\n", tgt); 1630 1631 kfree(tgt); 1632} 1633 1634/* ha->hardware_lock supposed to be held on entry */ 1635static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1636 const void *param, unsigned int param_size) 1637{ 1638 struct qla_tgt_sess_work_param *prm; 1639 unsigned long flags; 1640 1641 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1642 if (!prm) { 1643 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1644 "qla_target(%d): Unable to create session " 1645 "work, command will be refused", 0); 1646 return -ENOMEM; 1647 } 1648 1649 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1650 "Scheduling work (type %d, prm %p)" 1651 " to find session for param %p (size %d, tgt %p)\n", 1652 type, prm, param, param_size, tgt); 1653 1654 prm->type = type; 1655 memcpy(&prm->tm_iocb, param, param_size); 1656 1657 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1658 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1659 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1660 1661 schedule_work(&tgt->sess_work); 1662 1663 return 0; 1664} 1665 1666/* 1667 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1668 */ 1669static void qlt_send_notify_ack(struct qla_qpair *qpair, 1670 struct imm_ntfy_from_isp *ntfy, 1671 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1672 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1673{ 1674 struct scsi_qla_host *vha = qpair->vha; 1675 struct qla_hw_data *ha = vha->hw; 1676 request_t *pkt; 1677 struct nack_to_isp *nack; 1678 1679 if (!ha->flags.fw_started) 1680 return; 1681 1682 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1683 1684 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1685 if (!pkt) { 1686 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1687 "qla_target(%d): %s failed: unable to allocate " 1688 "request packet\n", vha->vp_idx, __func__); 1689 return; 1690 } 1691 1692 if (vha->vha_tgt.qla_tgt != NULL) 1693 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1694 1695 pkt->entry_type = NOTIFY_ACK_TYPE; 1696 pkt->entry_count = 1; 1697 1698 nack = (struct nack_to_isp *)pkt; 1699 nack->ox_id = ntfy->ox_id; 1700 1701 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1702 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1703 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1704 nack->u.isp24.flags = ntfy->u.isp24.flags & 1705 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1706 } 1707 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1708 nack->u.isp24.status = ntfy->u.isp24.status; 1709 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1710 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1711 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1712 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1713 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1714 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1715 nack->u.isp24.srr_reject_code = srr_reject_code; 1716 nack->u.isp24.srr_reject_code_expl = srr_explan; 1717 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1718 1719 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1720 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1721 vha->vp_idx, nack->u.isp24.status); 1722 1723 /* Memory Barrier */ 1724 wmb(); 1725 qla2x00_start_iocbs(vha, qpair->req); 1726} 1727 1728static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1729{ 1730 struct scsi_qla_host *vha = mcmd->vha; 1731 struct qla_hw_data *ha = vha->hw; 1732 struct abts_resp_to_24xx *resp; 1733 __le32 f_ctl; 1734 uint32_t h; 1735 uint8_t *p; 1736 int rc; 1737 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1738 struct qla_qpair *qpair = mcmd->qpair; 1739 1740 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1741 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1742 ha, mcmd->fc_tm_rsp); 1743 1744 rc = qlt_check_reserve_free_req(qpair, 1); 1745 if (rc) { 1746 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1747 "qla_target(%d): %s failed: unable to allocate request packet\n", 1748 vha->vp_idx, __func__); 1749 return -EAGAIN; 1750 } 1751 1752 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1753 memset(resp, 0, sizeof(*resp)); 1754 1755 h = qlt_make_handle(qpair); 1756 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1757 /* 1758 * CTIO type 7 from the firmware doesn't provide a way to 1759 * know the initiator's LOOP ID, hence we can't find 1760 * the session and, so, the command. 1761 */ 1762 return -EAGAIN; 1763 } else { 1764 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1765 } 1766 1767 resp->handle = make_handle(qpair->req->id, h); 1768 resp->entry_type = ABTS_RESP_24XX; 1769 resp->entry_count = 1; 1770 resp->nport_handle = abts->nport_handle; 1771 resp->vp_index = vha->vp_idx; 1772 resp->sof_type = abts->sof_type; 1773 resp->exchange_address = abts->exchange_address; 1774 resp->fcp_hdr_le = abts->fcp_hdr_le; 1775 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1776 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1777 F_CTL_SEQ_INITIATIVE); 1778 p = (uint8_t *)&f_ctl; 1779 resp->fcp_hdr_le.f_ctl[0] = *p++; 1780 resp->fcp_hdr_le.f_ctl[1] = *p++; 1781 resp->fcp_hdr_le.f_ctl[2] = *p; 1782 1783 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1784 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1785 1786 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1787 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1788 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1789 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1790 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1791 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1792 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1793 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1794 } else { 1795 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1796 resp->payload.ba_rjt.reason_code = 1797 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1798 /* Other bytes are zero */ 1799 } 1800 1801 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1802 1803 /* Memory Barrier */ 1804 wmb(); 1805 if (qpair->reqq_start_iocbs) 1806 qpair->reqq_start_iocbs(qpair); 1807 else 1808 qla2x00_start_iocbs(vha, qpair->req); 1809 1810 return rc; 1811} 1812 1813/* 1814 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1815 */ 1816static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1817 struct abts_recv_from_24xx *abts, uint32_t status, 1818 bool ids_reversed) 1819{ 1820 struct scsi_qla_host *vha = qpair->vha; 1821 struct qla_hw_data *ha = vha->hw; 1822 struct abts_resp_to_24xx *resp; 1823 __le32 f_ctl; 1824 uint8_t *p; 1825 1826 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1827 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1828 ha, abts, status); 1829 1830 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1831 NULL); 1832 if (!resp) { 1833 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1834 "qla_target(%d): %s failed: unable to allocate " 1835 "request packet", vha->vp_idx, __func__); 1836 return; 1837 } 1838 1839 resp->entry_type = ABTS_RESP_24XX; 1840 resp->handle = QLA_TGT_SKIP_HANDLE; 1841 resp->entry_count = 1; 1842 resp->nport_handle = abts->nport_handle; 1843 resp->vp_index = vha->vp_idx; 1844 resp->sof_type = abts->sof_type; 1845 resp->exchange_address = abts->exchange_address; 1846 resp->fcp_hdr_le = abts->fcp_hdr_le; 1847 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1848 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1849 F_CTL_SEQ_INITIATIVE); 1850 p = (uint8_t *)&f_ctl; 1851 resp->fcp_hdr_le.f_ctl[0] = *p++; 1852 resp->fcp_hdr_le.f_ctl[1] = *p++; 1853 resp->fcp_hdr_le.f_ctl[2] = *p; 1854 if (ids_reversed) { 1855 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1856 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1857 } else { 1858 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1859 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1860 } 1861 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1862 if (status == FCP_TMF_CMPL) { 1863 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1864 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1865 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1866 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1867 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1868 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1869 } else { 1870 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1871 resp->payload.ba_rjt.reason_code = 1872 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1873 /* Other bytes are zero */ 1874 } 1875 1876 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1877 1878 /* Memory Barrier */ 1879 wmb(); 1880 if (qpair->reqq_start_iocbs) 1881 qpair->reqq_start_iocbs(qpair); 1882 else 1883 qla2x00_start_iocbs(vha, qpair->req); 1884} 1885 1886/* 1887 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1888 */ 1889static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1890 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1891{ 1892 struct ctio7_to_24xx *ctio; 1893 u16 tmp; 1894 struct abts_recv_from_24xx *entry; 1895 1896 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1897 if (ctio == NULL) { 1898 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1899 "qla_target(%d): %s failed: unable to allocate " 1900 "request packet\n", vha->vp_idx, __func__); 1901 return; 1902 } 1903 1904 if (mcmd) 1905 /* abts from remote port */ 1906 entry = &mcmd->orig_iocb.abts; 1907 else 1908 /* abts from this driver. */ 1909 entry = (struct abts_recv_from_24xx *)pkt; 1910 1911 /* 1912 * We've got on entrance firmware's response on by us generated 1913 * ABTS response. So, in it ID fields are reversed. 1914 */ 1915 1916 ctio->entry_type = CTIO_TYPE7; 1917 ctio->entry_count = 1; 1918 ctio->nport_handle = entry->nport_handle; 1919 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1920 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1921 ctio->vp_index = vha->vp_idx; 1922 ctio->exchange_addr = entry->exchange_addr_to_abort; 1923 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1924 1925 if (mcmd) { 1926 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1927 1928 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1929 tmp |= (mcmd->abort_io_attr << 9); 1930 else if (qpair->retry_term_cnt & 1) 1931 tmp |= (0x4 << 9); 1932 } else { 1933 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1934 1935 if (qpair->retry_term_cnt & 1) 1936 tmp |= (0x4 << 9); 1937 } 1938 ctio->u.status1.flags = cpu_to_le16(tmp); 1939 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1940 1941 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1942 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1943 le16_to_cpu(ctio->u.status1.flags), 1944 le16_to_cpu(ctio->u.status1.ox_id), 1945 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1946 1947 /* Memory Barrier */ 1948 wmb(); 1949 if (qpair->reqq_start_iocbs) 1950 qpair->reqq_start_iocbs(qpair); 1951 else 1952 qla2x00_start_iocbs(vha, qpair->req); 1953 1954 if (mcmd) 1955 qlt_build_abts_resp_iocb(mcmd); 1956 else 1957 qlt_24xx_send_abts_resp(qpair, 1958 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1959 1960} 1961 1962/* drop cmds for the given lun 1963 * XXX only looks for cmds on the port through which lun reset was recieved 1964 * XXX does not go through the list of other port (which may have cmds 1965 * for the same lun) 1966 */ 1967static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1968{ 1969 struct qla_tgt_sess_op *op; 1970 struct qla_tgt_cmd *cmd; 1971 uint32_t key; 1972 unsigned long flags; 1973 1974 key = sid_to_key(s_id); 1975 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1976 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1977 uint32_t op_key; 1978 u64 op_lun; 1979 1980 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1981 op_lun = scsilun_to_int( 1982 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1983 if (op_key == key && op_lun == lun) 1984 op->aborted = true; 1985 } 1986 1987 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1988 uint32_t op_key; 1989 u64 op_lun; 1990 1991 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1992 op_lun = scsilun_to_int( 1993 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1994 if (op_key == key && op_lun == lun) 1995 op->aborted = true; 1996 } 1997 1998 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1999 uint32_t cmd_key; 2000 u64 cmd_lun; 2001 2002 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2003 cmd_lun = scsilun_to_int( 2004 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2005 if (cmd_key == key && cmd_lun == lun) 2006 cmd->aborted = 1; 2007 } 2008 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2009} 2010 2011static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2012 uint64_t unpacked_lun) 2013{ 2014 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2015 struct qla_qpair_hint *h = NULL; 2016 2017 if (vha->flags.qpairs_available) { 2018 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2019 if (!h) 2020 h = &tgt->qphints[0]; 2021 } else { 2022 h = &tgt->qphints[0]; 2023 } 2024 2025 return h; 2026} 2027 2028static void qlt_do_tmr_work(struct work_struct *work) 2029{ 2030 struct qla_tgt_mgmt_cmd *mcmd = 2031 container_of(work, struct qla_tgt_mgmt_cmd, work); 2032 struct qla_hw_data *ha = mcmd->vha->hw; 2033 int rc; 2034 uint32_t tag; 2035 unsigned long flags; 2036 2037 switch (mcmd->tmr_func) { 2038 case QLA_TGT_ABTS: 2039 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2040 break; 2041 default: 2042 tag = 0; 2043 break; 2044 } 2045 2046 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2047 mcmd->tmr_func, tag); 2048 2049 if (rc != 0) { 2050 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2051 switch (mcmd->tmr_func) { 2052 case QLA_TGT_ABTS: 2053 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2054 qlt_build_abts_resp_iocb(mcmd); 2055 break; 2056 case QLA_TGT_LUN_RESET: 2057 case QLA_TGT_CLEAR_TS: 2058 case QLA_TGT_ABORT_TS: 2059 case QLA_TGT_CLEAR_ACA: 2060 case QLA_TGT_TARGET_RESET: 2061 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2062 qla_sam_status); 2063 break; 2064 2065 case QLA_TGT_ABORT_ALL: 2066 case QLA_TGT_NEXUS_LOSS_SESS: 2067 case QLA_TGT_NEXUS_LOSS: 2068 qlt_send_notify_ack(mcmd->qpair, 2069 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2070 break; 2071 } 2072 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2073 2074 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2075 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2076 mcmd->vha->vp_idx, rc); 2077 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2078 } 2079} 2080 2081/* ha->hardware_lock supposed to be held on entry */ 2082static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2083 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2084{ 2085 struct qla_hw_data *ha = vha->hw; 2086 struct qla_tgt_mgmt_cmd *mcmd; 2087 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2088 2089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2090 "qla_target(%d): task abort (tag=%d)\n", 2091 vha->vp_idx, abts->exchange_addr_to_abort); 2092 2093 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2094 if (mcmd == NULL) { 2095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2096 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2097 vha->vp_idx, __func__); 2098 return -ENOMEM; 2099 } 2100 memset(mcmd, 0, sizeof(*mcmd)); 2101 mcmd->cmd_type = TYPE_TGT_TMCMD; 2102 mcmd->sess = sess; 2103 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2104 mcmd->reset_count = ha->base_qpair->chip_reset; 2105 mcmd->tmr_func = QLA_TGT_ABTS; 2106 mcmd->qpair = h->qpair; 2107 mcmd->vha = vha; 2108 2109 /* 2110 * LUN is looked up by target-core internally based on the passed 2111 * abts->exchange_addr_to_abort tag. 2112 */ 2113 mcmd->se_cmd.cpuid = h->cpuid; 2114 2115 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2116 struct qla_tgt_cmd *abort_cmd; 2117 2118 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2119 le32_to_cpu(abts->exchange_addr_to_abort)); 2120 if (abort_cmd && abort_cmd->qpair) { 2121 mcmd->qpair = abort_cmd->qpair; 2122 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2123 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2124 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2125 } 2126 } 2127 2128 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2129 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2130 2131 return 0; 2132} 2133 2134/* 2135 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2136 */ 2137static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2138 struct abts_recv_from_24xx *abts) 2139{ 2140 struct qla_hw_data *ha = vha->hw; 2141 struct fc_port *sess; 2142 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2143 be_id_t s_id; 2144 int rc; 2145 unsigned long flags; 2146 2147 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2148 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2149 "qla_target(%d): ABTS: Abort Sequence not " 2150 "supported\n", vha->vp_idx); 2151 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2152 false); 2153 return; 2154 } 2155 2156 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2157 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2158 "qla_target(%d): ABTS: Unknown Exchange " 2159 "Address received\n", vha->vp_idx); 2160 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2161 false); 2162 return; 2163 } 2164 2165 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2166 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2167 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2168 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2169 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2170 2171 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2172 2173 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2174 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2175 if (!sess) { 2176 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2177 "qla_target(%d): task abort for non-existent session\n", 2178 vha->vp_idx); 2179 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2180 2181 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2182 false); 2183 return; 2184 } 2185 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2186 2187 2188 if (sess->deleted) { 2189 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2190 false); 2191 return; 2192 } 2193 2194 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2195 if (rc != 0) { 2196 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2197 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2198 vha->vp_idx, rc); 2199 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2200 false); 2201 return; 2202 } 2203} 2204 2205/* 2206 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2207 */ 2208static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2209 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2210{ 2211 struct scsi_qla_host *ha = mcmd->vha; 2212 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2213 struct ctio7_to_24xx *ctio; 2214 uint16_t temp; 2215 2216 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2217 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2218 ha, atio, resp_code); 2219 2220 2221 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2222 if (ctio == NULL) { 2223 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2224 "qla_target(%d): %s failed: unable to allocate " 2225 "request packet\n", ha->vp_idx, __func__); 2226 return; 2227 } 2228 2229 ctio->entry_type = CTIO_TYPE7; 2230 ctio->entry_count = 1; 2231 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2232 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2233 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2234 ctio->vp_index = ha->vp_idx; 2235 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2236 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2237 temp = (atio->u.isp24.attr << 9)| 2238 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2239 ctio->u.status1.flags = cpu_to_le16(temp); 2240 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2241 ctio->u.status1.ox_id = cpu_to_le16(temp); 2242 ctio->u.status1.scsi_status = 2243 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2244 ctio->u.status1.response_len = cpu_to_le16(8); 2245 ctio->u.status1.sense_data[0] = resp_code; 2246 2247 /* Memory Barrier */ 2248 wmb(); 2249 if (qpair->reqq_start_iocbs) 2250 qpair->reqq_start_iocbs(qpair); 2251 else 2252 qla2x00_start_iocbs(ha, qpair->req); 2253} 2254 2255void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2256{ 2257 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2258} 2259EXPORT_SYMBOL(qlt_free_mcmd); 2260 2261/* 2262 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2263 * reacquire 2264 */ 2265void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2266 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2267{ 2268 struct atio_from_isp *atio = &cmd->atio; 2269 struct ctio7_to_24xx *ctio; 2270 uint16_t temp; 2271 struct scsi_qla_host *vha = cmd->vha; 2272 2273 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2274 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2275 "sense_key=%02x, asc=%02x, ascq=%02x", 2276 vha, atio, scsi_status, sense_key, asc, ascq); 2277 2278 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2279 if (!ctio) { 2280 ql_dbg(ql_dbg_async, vha, 0x3067, 2281 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2282 vha->host_no, __func__); 2283 goto out; 2284 } 2285 2286 ctio->entry_type = CTIO_TYPE7; 2287 ctio->entry_count = 1; 2288 ctio->handle = QLA_TGT_SKIP_HANDLE; 2289 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2290 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2291 ctio->vp_index = vha->vp_idx; 2292 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2293 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2294 temp = (atio->u.isp24.attr << 9) | 2295 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2296 ctio->u.status1.flags = cpu_to_le16(temp); 2297 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2298 ctio->u.status1.ox_id = cpu_to_le16(temp); 2299 ctio->u.status1.scsi_status = 2300 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2301 ctio->u.status1.response_len = cpu_to_le16(18); 2302 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2303 2304 if (ctio->u.status1.residual != 0) 2305 ctio->u.status1.scsi_status |= 2306 cpu_to_le16(SS_RESIDUAL_UNDER); 2307 2308 /* Fixed format sense data. */ 2309 ctio->u.status1.sense_data[0] = 0x70; 2310 ctio->u.status1.sense_data[2] = sense_key; 2311 /* Additional sense length */ 2312 ctio->u.status1.sense_data[7] = 0xa; 2313 /* ASC and ASCQ */ 2314 ctio->u.status1.sense_data[12] = asc; 2315 ctio->u.status1.sense_data[13] = ascq; 2316 2317 /* Memory Barrier */ 2318 wmb(); 2319 2320 if (qpair->reqq_start_iocbs) 2321 qpair->reqq_start_iocbs(qpair); 2322 else 2323 qla2x00_start_iocbs(vha, qpair->req); 2324 2325out: 2326 return; 2327} 2328 2329/* callback from target fabric module code */ 2330void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2331{ 2332 struct scsi_qla_host *vha = mcmd->sess->vha; 2333 struct qla_hw_data *ha = vha->hw; 2334 unsigned long flags; 2335 struct qla_qpair *qpair = mcmd->qpair; 2336 bool free_mcmd = true; 2337 2338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2339 "TM response mcmd (%p) status %#x state %#x", 2340 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2341 2342 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2343 2344 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2345 /* 2346 * Either the port is not online or this request was from 2347 * previous life, just abort the processing. 2348 */ 2349 ql_dbg(ql_dbg_async, vha, 0xe100, 2350 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2351 vha->flags.online, qla2x00_reset_active(vha), 2352 mcmd->reset_count, qpair->chip_reset); 2353 ha->tgt.tgt_ops->free_mcmd(mcmd); 2354 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2355 return; 2356 } 2357 2358 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2359 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2360 case ELS_LOGO: 2361 case ELS_PRLO: 2362 case ELS_TPRLO: 2363 ql_dbg(ql_dbg_disc, vha, 0x2106, 2364 "TM response logo %8phC status %#x state %#x", 2365 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2366 mcmd->flags); 2367 qlt_schedule_sess_for_deletion(mcmd->sess); 2368 break; 2369 default: 2370 qlt_send_notify_ack(vha->hw->base_qpair, 2371 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2372 break; 2373 } 2374 } else { 2375 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2376 qlt_build_abts_resp_iocb(mcmd); 2377 free_mcmd = false; 2378 } else 2379 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2380 mcmd->fc_tm_rsp); 2381 } 2382 /* 2383 * Make the callback for ->free_mcmd() to queue_work() and invoke 2384 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2385 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2386 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2387 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2388 * qlt_xmit_tm_rsp() returns here.. 2389 */ 2390 if (free_mcmd) 2391 ha->tgt.tgt_ops->free_mcmd(mcmd); 2392 2393 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2394} 2395EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2396 2397/* No locks */ 2398static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2399{ 2400 struct qla_tgt_cmd *cmd = prm->cmd; 2401 2402 BUG_ON(cmd->sg_cnt == 0); 2403 2404 prm->sg = (struct scatterlist *)cmd->sg; 2405 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2406 cmd->sg_cnt, cmd->dma_data_direction); 2407 if (unlikely(prm->seg_cnt == 0)) 2408 goto out_err; 2409 2410 prm->cmd->sg_mapped = 1; 2411 2412 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2413 /* 2414 * If greater than four sg entries then we need to allocate 2415 * the continuation entries 2416 */ 2417 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2418 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2419 QLA_TGT_DATASEGS_PER_CMD_24XX, 2420 QLA_TGT_DATASEGS_PER_CONT_24XX); 2421 } else { 2422 /* DIF */ 2423 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2424 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2425 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2426 prm->tot_dsds = prm->seg_cnt; 2427 } else 2428 prm->tot_dsds = prm->seg_cnt; 2429 2430 if (cmd->prot_sg_cnt) { 2431 prm->prot_sg = cmd->prot_sg; 2432 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2433 cmd->prot_sg, cmd->prot_sg_cnt, 2434 cmd->dma_data_direction); 2435 if (unlikely(prm->prot_seg_cnt == 0)) 2436 goto out_err; 2437 2438 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2439 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2440 /* Dif Bundling not support here */ 2441 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2442 cmd->blk_sz); 2443 prm->tot_dsds += prm->prot_seg_cnt; 2444 } else 2445 prm->tot_dsds += prm->prot_seg_cnt; 2446 } 2447 } 2448 2449 return 0; 2450 2451out_err: 2452 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2453 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2454 0, prm->cmd->sg_cnt); 2455 return -1; 2456} 2457 2458static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2459{ 2460 struct qla_hw_data *ha; 2461 struct qla_qpair *qpair; 2462 2463 if (!cmd->sg_mapped) 2464 return; 2465 2466 qpair = cmd->qpair; 2467 2468 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2469 cmd->dma_data_direction); 2470 cmd->sg_mapped = 0; 2471 2472 if (cmd->prot_sg_cnt) 2473 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2474 cmd->dma_data_direction); 2475 2476 if (!cmd->ctx) 2477 return; 2478 ha = vha->hw; 2479 if (cmd->ctx_dsd_alloced) 2480 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2481 2482 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2483} 2484 2485static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2486 uint32_t req_cnt) 2487{ 2488 uint32_t cnt; 2489 struct req_que *req = qpair->req; 2490 2491 if (req->cnt < (req_cnt + 2)) { 2492 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2493 rd_reg_dword_relaxed(req->req_q_out)); 2494 2495 if (req->ring_index < cnt) 2496 req->cnt = cnt - req->ring_index; 2497 else 2498 req->cnt = req->length - (req->ring_index - cnt); 2499 2500 if (unlikely(req->cnt < (req_cnt + 2))) 2501 return -EAGAIN; 2502 } 2503 2504 req->cnt -= req_cnt; 2505 2506 return 0; 2507} 2508 2509/* 2510 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2511 */ 2512static inline void *qlt_get_req_pkt(struct req_que *req) 2513{ 2514 /* Adjust ring index. */ 2515 req->ring_index++; 2516 if (req->ring_index == req->length) { 2517 req->ring_index = 0; 2518 req->ring_ptr = req->ring; 2519 } else { 2520 req->ring_ptr++; 2521 } 2522 return (cont_entry_t *)req->ring_ptr; 2523} 2524 2525/* ha->hardware_lock supposed to be held on entry */ 2526static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2527{ 2528 uint32_t h; 2529 int index; 2530 uint8_t found = 0; 2531 struct req_que *req = qpair->req; 2532 2533 h = req->current_outstanding_cmd; 2534 2535 for (index = 1; index < req->num_outstanding_cmds; index++) { 2536 h++; 2537 if (h == req->num_outstanding_cmds) 2538 h = 1; 2539 2540 if (h == QLA_TGT_SKIP_HANDLE) 2541 continue; 2542 2543 if (!req->outstanding_cmds[h]) { 2544 found = 1; 2545 break; 2546 } 2547 } 2548 2549 if (found) { 2550 req->current_outstanding_cmd = h; 2551 } else { 2552 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2553 "qla_target(%d): Ran out of empty cmd slots\n", 2554 qpair->vha->vp_idx); 2555 h = QLA_TGT_NULL_HANDLE; 2556 } 2557 2558 return h; 2559} 2560 2561/* ha->hardware_lock supposed to be held on entry */ 2562static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2563 struct qla_tgt_prm *prm) 2564{ 2565 uint32_t h; 2566 struct ctio7_to_24xx *pkt; 2567 struct atio_from_isp *atio = &prm->cmd->atio; 2568 uint16_t temp; 2569 2570 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2571 prm->pkt = pkt; 2572 memset(pkt, 0, sizeof(*pkt)); 2573 2574 pkt->entry_type = CTIO_TYPE7; 2575 pkt->entry_count = (uint8_t)prm->req_cnt; 2576 pkt->vp_index = prm->cmd->vp_idx; 2577 2578 h = qlt_make_handle(qpair); 2579 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2580 /* 2581 * CTIO type 7 from the firmware doesn't provide a way to 2582 * know the initiator's LOOP ID, hence we can't find 2583 * the session and, so, the command. 2584 */ 2585 return -EAGAIN; 2586 } else 2587 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2588 2589 pkt->handle = make_handle(qpair->req->id, h); 2590 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2591 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2592 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2593 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2594 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2595 temp = atio->u.isp24.attr << 9; 2596 pkt->u.status0.flags |= cpu_to_le16(temp); 2597 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2598 pkt->u.status0.ox_id = cpu_to_le16(temp); 2599 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2600 2601 return 0; 2602} 2603 2604/* 2605 * ha->hardware_lock supposed to be held on entry. We have already made sure 2606 * that there is sufficient amount of request entries to not drop it. 2607 */ 2608static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2609{ 2610 int cnt; 2611 struct dsd64 *cur_dsd; 2612 2613 /* Build continuation packets */ 2614 while (prm->seg_cnt > 0) { 2615 cont_a64_entry_t *cont_pkt64 = 2616 (cont_a64_entry_t *)qlt_get_req_pkt( 2617 prm->cmd->qpair->req); 2618 2619 /* 2620 * Make sure that from cont_pkt64 none of 2621 * 64-bit specific fields used for 32-bit 2622 * addressing. Cast to (cont_entry_t *) for 2623 * that. 2624 */ 2625 2626 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2627 2628 cont_pkt64->entry_count = 1; 2629 cont_pkt64->sys_define = 0; 2630 2631 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2632 cur_dsd = cont_pkt64->dsd; 2633 2634 /* Load continuation entry data segments */ 2635 for (cnt = 0; 2636 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2637 cnt++, prm->seg_cnt--) { 2638 append_dsd64(&cur_dsd, prm->sg); 2639 prm->sg = sg_next(prm->sg); 2640 } 2641 } 2642} 2643 2644/* 2645 * ha->hardware_lock supposed to be held on entry. We have already made sure 2646 * that there is sufficient amount of request entries to not drop it. 2647 */ 2648static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2649{ 2650 int cnt; 2651 struct dsd64 *cur_dsd; 2652 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2653 2654 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2655 2656 /* Setup packet address segment pointer */ 2657 cur_dsd = &pkt24->u.status0.dsd; 2658 2659 /* Set total data segment count */ 2660 if (prm->seg_cnt) 2661 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2662 2663 if (prm->seg_cnt == 0) { 2664 /* No data transfer */ 2665 cur_dsd->address = 0; 2666 cur_dsd->length = 0; 2667 return; 2668 } 2669 2670 /* If scatter gather */ 2671 2672 /* Load command entry data segments */ 2673 for (cnt = 0; 2674 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2675 cnt++, prm->seg_cnt--) { 2676 append_dsd64(&cur_dsd, prm->sg); 2677 prm->sg = sg_next(prm->sg); 2678 } 2679 2680 qlt_load_cont_data_segments(prm); 2681} 2682 2683static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2684{ 2685 return cmd->bufflen > 0; 2686} 2687 2688static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2689{ 2690 struct qla_tgt_cmd *cmd; 2691 struct scsi_qla_host *vha; 2692 2693 /* asc 0x10=dif error */ 2694 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2695 cmd = prm->cmd; 2696 vha = cmd->vha; 2697 /* ASCQ */ 2698 switch (prm->sense_buffer[13]) { 2699 case 1: 2700 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2701 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2702 "se_cmd=%p tag[%x]", 2703 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2704 cmd->atio.u.isp24.exchange_addr); 2705 break; 2706 case 2: 2707 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2708 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2709 "se_cmd=%p tag[%x]", 2710 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2711 cmd->atio.u.isp24.exchange_addr); 2712 break; 2713 case 3: 2714 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2715 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2716 "se_cmd=%p tag[%x]", 2717 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2718 cmd->atio.u.isp24.exchange_addr); 2719 break; 2720 default: 2721 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2722 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2723 "se_cmd=%p tag[%x]", 2724 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2725 cmd->atio.u.isp24.exchange_addr); 2726 break; 2727 } 2728 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2729 } 2730} 2731 2732/* 2733 * Called without ha->hardware_lock held 2734 */ 2735static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2736 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2737 uint32_t *full_req_cnt) 2738{ 2739 struct se_cmd *se_cmd = &cmd->se_cmd; 2740 struct qla_qpair *qpair = cmd->qpair; 2741 2742 prm->cmd = cmd; 2743 prm->tgt = cmd->tgt; 2744 prm->pkt = NULL; 2745 prm->rq_result = scsi_status; 2746 prm->sense_buffer = &cmd->sense_buffer[0]; 2747 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2748 prm->sg = NULL; 2749 prm->seg_cnt = -1; 2750 prm->req_cnt = 1; 2751 prm->residual = 0; 2752 prm->add_status_pkt = 0; 2753 prm->prot_sg = NULL; 2754 prm->prot_seg_cnt = 0; 2755 prm->tot_dsds = 0; 2756 2757 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2758 if (qlt_pci_map_calc_cnt(prm) != 0) 2759 return -EAGAIN; 2760 } 2761 2762 *full_req_cnt = prm->req_cnt; 2763 2764 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2765 prm->residual = se_cmd->residual_count; 2766 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2767 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2768 prm->residual, se_cmd->tag, 2769 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2770 cmd->bufflen, prm->rq_result); 2771 prm->rq_result |= SS_RESIDUAL_UNDER; 2772 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2773 prm->residual = se_cmd->residual_count; 2774 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2775 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2776 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2777 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2778 prm->rq_result |= SS_RESIDUAL_OVER; 2779 } 2780 2781 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2782 /* 2783 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2784 * ignored in *xmit_response() below 2785 */ 2786 if (qlt_has_data(cmd)) { 2787 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2788 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2789 (prm->rq_result != 0))) { 2790 prm->add_status_pkt = 1; 2791 (*full_req_cnt)++; 2792 } 2793 } 2794 } 2795 2796 return 0; 2797} 2798 2799static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2800 int sending_sense) 2801{ 2802 if (cmd->qpair->enable_class_2) 2803 return 0; 2804 2805 if (sending_sense) 2806 return cmd->conf_compl_supported; 2807 else 2808 return cmd->qpair->enable_explicit_conf && 2809 cmd->conf_compl_supported; 2810} 2811 2812static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2813 struct qla_tgt_prm *prm) 2814{ 2815 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2816 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2817 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2818 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2819 ctio->u.status0.flags |= cpu_to_le16( 2820 CTIO7_FLAGS_EXPLICIT_CONFORM | 2821 CTIO7_FLAGS_CONFORM_REQ); 2822 } 2823 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2824 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2825 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2826 int i; 2827 2828 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2829 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2830 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2831 "Skipping EXPLICIT_CONFORM and " 2832 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2833 "non GOOD status\n"); 2834 goto skip_explict_conf; 2835 } 2836 ctio->u.status1.flags |= cpu_to_le16( 2837 CTIO7_FLAGS_EXPLICIT_CONFORM | 2838 CTIO7_FLAGS_CONFORM_REQ); 2839 } 2840skip_explict_conf: 2841 ctio->u.status1.flags &= 2842 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2843 ctio->u.status1.flags |= 2844 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2845 ctio->u.status1.scsi_status |= 2846 cpu_to_le16(SS_SENSE_LEN_VALID); 2847 ctio->u.status1.sense_length = 2848 cpu_to_le16(prm->sense_buffer_len); 2849 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2850 uint32_t v; 2851 2852 v = get_unaligned_be32( 2853 &((uint32_t *)prm->sense_buffer)[i]); 2854 put_unaligned_le32(v, 2855 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2856 } 2857 qlt_print_dif_err(prm); 2858 2859 } else { 2860 ctio->u.status1.flags &= 2861 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2862 ctio->u.status1.flags |= 2863 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2864 ctio->u.status1.sense_length = 0; 2865 memset(ctio->u.status1.sense_data, 0, 2866 sizeof(ctio->u.status1.sense_data)); 2867 } 2868 2869 /* Sense with len > 24, is it possible ??? */ 2870} 2871 2872static inline int 2873qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2874{ 2875 switch (se_cmd->prot_op) { 2876 case TARGET_PROT_DOUT_INSERT: 2877 case TARGET_PROT_DIN_STRIP: 2878 if (ql2xenablehba_err_chk >= 1) 2879 return 1; 2880 break; 2881 case TARGET_PROT_DOUT_PASS: 2882 case TARGET_PROT_DIN_PASS: 2883 if (ql2xenablehba_err_chk >= 2) 2884 return 1; 2885 break; 2886 case TARGET_PROT_DIN_INSERT: 2887 case TARGET_PROT_DOUT_STRIP: 2888 return 1; 2889 default: 2890 break; 2891 } 2892 return 0; 2893} 2894 2895static inline int 2896qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2897{ 2898 switch (se_cmd->prot_op) { 2899 case TARGET_PROT_DIN_INSERT: 2900 case TARGET_PROT_DOUT_INSERT: 2901 case TARGET_PROT_DIN_STRIP: 2902 case TARGET_PROT_DOUT_STRIP: 2903 case TARGET_PROT_DIN_PASS: 2904 case TARGET_PROT_DOUT_PASS: 2905 return 1; 2906 default: 2907 return 0; 2908 } 2909 return 0; 2910} 2911 2912/* 2913 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2914 */ 2915static void 2916qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2917 uint16_t *pfw_prot_opts) 2918{ 2919 struct se_cmd *se_cmd = &cmd->se_cmd; 2920 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2921 scsi_qla_host_t *vha = cmd->tgt->vha; 2922 struct qla_hw_data *ha = vha->hw; 2923 uint32_t t32 = 0; 2924 2925 /* 2926 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2927 * have been immplemented by TCM, before AppTag is avail. 2928 * Look for modesense_handlers[] 2929 */ 2930 ctx->app_tag = 0; 2931 ctx->app_tag_mask[0] = 0x0; 2932 ctx->app_tag_mask[1] = 0x0; 2933 2934 if (IS_PI_UNINIT_CAPABLE(ha)) { 2935 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2936 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2937 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2938 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2939 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2940 } 2941 2942 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2943 2944 switch (se_cmd->prot_type) { 2945 case TARGET_DIF_TYPE0_PROT: 2946 /* 2947 * No check for ql2xenablehba_err_chk, as it 2948 * would be an I/O error if hba tag generation 2949 * is not done. 2950 */ 2951 ctx->ref_tag = cpu_to_le32(lba); 2952 /* enable ALL bytes of the ref tag */ 2953 ctx->ref_tag_mask[0] = 0xff; 2954 ctx->ref_tag_mask[1] = 0xff; 2955 ctx->ref_tag_mask[2] = 0xff; 2956 ctx->ref_tag_mask[3] = 0xff; 2957 break; 2958 case TARGET_DIF_TYPE1_PROT: 2959 /* 2960 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2961 * REF tag, and 16 bit app tag. 2962 */ 2963 ctx->ref_tag = cpu_to_le32(lba); 2964 if (!qla_tgt_ref_mask_check(se_cmd) || 2965 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2966 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2967 break; 2968 } 2969 /* enable ALL bytes of the ref tag */ 2970 ctx->ref_tag_mask[0] = 0xff; 2971 ctx->ref_tag_mask[1] = 0xff; 2972 ctx->ref_tag_mask[2] = 0xff; 2973 ctx->ref_tag_mask[3] = 0xff; 2974 break; 2975 case TARGET_DIF_TYPE2_PROT: 2976 /* 2977 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2978 * tag has to match LBA in CDB + N 2979 */ 2980 ctx->ref_tag = cpu_to_le32(lba); 2981 if (!qla_tgt_ref_mask_check(se_cmd) || 2982 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2983 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2984 break; 2985 } 2986 /* enable ALL bytes of the ref tag */ 2987 ctx->ref_tag_mask[0] = 0xff; 2988 ctx->ref_tag_mask[1] = 0xff; 2989 ctx->ref_tag_mask[2] = 0xff; 2990 ctx->ref_tag_mask[3] = 0xff; 2991 break; 2992 case TARGET_DIF_TYPE3_PROT: 2993 /* For TYPE 3 protection: 16 bit GUARD only */ 2994 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2995 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2996 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2997 break; 2998 } 2999} 3000 3001static inline int 3002qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3003{ 3004 struct dsd64 *cur_dsd; 3005 uint32_t transfer_length = 0; 3006 uint32_t data_bytes; 3007 uint32_t dif_bytes; 3008 uint8_t bundling = 1; 3009 struct crc_context *crc_ctx_pkt = NULL; 3010 struct qla_hw_data *ha; 3011 struct ctio_crc2_to_fw *pkt; 3012 dma_addr_t crc_ctx_dma; 3013 uint16_t fw_prot_opts = 0; 3014 struct qla_tgt_cmd *cmd = prm->cmd; 3015 struct se_cmd *se_cmd = &cmd->se_cmd; 3016 uint32_t h; 3017 struct atio_from_isp *atio = &prm->cmd->atio; 3018 struct qla_tc_param tc; 3019 uint16_t t16; 3020 scsi_qla_host_t *vha = cmd->vha; 3021 3022 ha = vha->hw; 3023 3024 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3025 prm->pkt = pkt; 3026 memset(pkt, 0, sizeof(*pkt)); 3027 3028 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3029 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3030 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3031 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3032 3033 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3034 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3035 bundling = 0; 3036 3037 /* Compute dif len and adjust data len to incude protection */ 3038 data_bytes = cmd->bufflen; 3039 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3040 3041 switch (se_cmd->prot_op) { 3042 case TARGET_PROT_DIN_INSERT: 3043 case TARGET_PROT_DOUT_STRIP: 3044 transfer_length = data_bytes; 3045 if (cmd->prot_sg_cnt) 3046 data_bytes += dif_bytes; 3047 break; 3048 case TARGET_PROT_DIN_STRIP: 3049 case TARGET_PROT_DOUT_INSERT: 3050 case TARGET_PROT_DIN_PASS: 3051 case TARGET_PROT_DOUT_PASS: 3052 transfer_length = data_bytes + dif_bytes; 3053 break; 3054 default: 3055 BUG(); 3056 break; 3057 } 3058 3059 if (!qlt_hba_err_chk_enabled(se_cmd)) 3060 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3061 /* HBA error checking enabled */ 3062 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3063 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3064 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3065 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3066 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3067 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3068 } 3069 3070 switch (se_cmd->prot_op) { 3071 case TARGET_PROT_DIN_INSERT: 3072 case TARGET_PROT_DOUT_INSERT: 3073 fw_prot_opts |= PO_MODE_DIF_INSERT; 3074 break; 3075 case TARGET_PROT_DIN_STRIP: 3076 case TARGET_PROT_DOUT_STRIP: 3077 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3078 break; 3079 case TARGET_PROT_DIN_PASS: 3080 case TARGET_PROT_DOUT_PASS: 3081 fw_prot_opts |= PO_MODE_DIF_PASS; 3082 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3083 break; 3084 default:/* Normal Request */ 3085 fw_prot_opts |= PO_MODE_DIF_PASS; 3086 break; 3087 } 3088 3089 /* ---- PKT ---- */ 3090 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3091 pkt->entry_type = CTIO_CRC2; 3092 pkt->entry_count = 1; 3093 pkt->vp_index = cmd->vp_idx; 3094 3095 h = qlt_make_handle(qpair); 3096 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3097 /* 3098 * CTIO type 7 from the firmware doesn't provide a way to 3099 * know the initiator's LOOP ID, hence we can't find 3100 * the session and, so, the command. 3101 */ 3102 return -EAGAIN; 3103 } else 3104 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3105 3106 pkt->handle = make_handle(qpair->req->id, h); 3107 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3108 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3109 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3110 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3111 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3112 3113 /* silence compile warning */ 3114 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3115 pkt->ox_id = cpu_to_le16(t16); 3116 3117 t16 = (atio->u.isp24.attr << 9); 3118 pkt->flags |= cpu_to_le16(t16); 3119 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3120 3121 /* Set transfer direction */ 3122 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3123 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3124 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3125 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3126 3127 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3128 /* Fibre channel byte count */ 3129 pkt->transfer_length = cpu_to_le32(transfer_length); 3130 3131 /* ----- CRC context -------- */ 3132 3133 /* Allocate CRC context from global pool */ 3134 crc_ctx_pkt = cmd->ctx = 3135 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3136 3137 if (!crc_ctx_pkt) 3138 goto crc_queuing_error; 3139 3140 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3141 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3142 3143 /* Set handle */ 3144 crc_ctx_pkt->handle = pkt->handle; 3145 3146 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3147 3148 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3149 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3150 3151 if (!bundling) { 3152 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3153 } else { 3154 /* 3155 * Configure Bundling if we need to fetch interlaving 3156 * protection PCI accesses 3157 */ 3158 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3159 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3160 crc_ctx_pkt->u.bundling.dseg_count = 3161 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3162 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3163 } 3164 3165 /* Finish the common fields of CRC pkt */ 3166 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3167 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3168 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3169 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3170 3171 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3172 tc.vha = vha; 3173 tc.blk_sz = cmd->blk_sz; 3174 tc.bufflen = cmd->bufflen; 3175 tc.sg = cmd->sg; 3176 tc.prot_sg = cmd->prot_sg; 3177 tc.ctx = crc_ctx_pkt; 3178 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3179 3180 /* Walks data segments */ 3181 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3182 3183 if (!bundling && prm->prot_seg_cnt) { 3184 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3185 prm->tot_dsds, &tc)) 3186 goto crc_queuing_error; 3187 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3188 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3189 goto crc_queuing_error; 3190 3191 if (bundling && prm->prot_seg_cnt) { 3192 /* Walks dif segments */ 3193 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3194 3195 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3196 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3197 prm->prot_seg_cnt, cmd)) 3198 goto crc_queuing_error; 3199 } 3200 return QLA_SUCCESS; 3201 3202crc_queuing_error: 3203 /* Cleanup will be performed by the caller */ 3204 qpair->req->outstanding_cmds[h] = NULL; 3205 3206 return QLA_FUNCTION_FAILED; 3207} 3208 3209/* 3210 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3211 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3212 */ 3213int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3214 uint8_t scsi_status) 3215{ 3216 struct scsi_qla_host *vha = cmd->vha; 3217 struct qla_qpair *qpair = cmd->qpair; 3218 struct ctio7_to_24xx *pkt; 3219 struct qla_tgt_prm prm; 3220 uint32_t full_req_cnt = 0; 3221 unsigned long flags = 0; 3222 int res; 3223 3224 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3225 (cmd->sess && cmd->sess->deleted)) { 3226 cmd->state = QLA_TGT_STATE_PROCESSED; 3227 return 0; 3228 } 3229 3230 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3231 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3232 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3233 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3234 &cmd->se_cmd, qpair->id); 3235 3236 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3237 &full_req_cnt); 3238 if (unlikely(res != 0)) { 3239 return res; 3240 } 3241 3242 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3243 3244 if (xmit_type == QLA_TGT_XMIT_STATUS) 3245 qpair->tgt_counters.core_qla_snd_status++; 3246 else 3247 qpair->tgt_counters.core_qla_que_buf++; 3248 3249 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3250 /* 3251 * Either the port is not online or this request was from 3252 * previous life, just abort the processing. 3253 */ 3254 cmd->state = QLA_TGT_STATE_PROCESSED; 3255 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3256 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3257 vha->flags.online, qla2x00_reset_active(vha), 3258 cmd->reset_count, qpair->chip_reset); 3259 res = 0; 3260 goto out_unmap_unlock; 3261 } 3262 3263 /* Does F/W have an IOCBs for this request */ 3264 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3265 if (unlikely(res)) 3266 goto out_unmap_unlock; 3267 3268 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3269 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3270 else 3271 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3272 if (unlikely(res != 0)) { 3273 qpair->req->cnt += full_req_cnt; 3274 goto out_unmap_unlock; 3275 } 3276 3277 pkt = (struct ctio7_to_24xx *)prm.pkt; 3278 3279 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3280 pkt->u.status0.flags |= 3281 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3282 CTIO7_FLAGS_STATUS_MODE_0); 3283 3284 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3285 qlt_load_data_segments(&prm); 3286 3287 if (prm.add_status_pkt == 0) { 3288 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3289 pkt->u.status0.scsi_status = 3290 cpu_to_le16(prm.rq_result); 3291 pkt->u.status0.residual = 3292 cpu_to_le32(prm.residual); 3293 pkt->u.status0.flags |= cpu_to_le16( 3294 CTIO7_FLAGS_SEND_STATUS); 3295 if (qlt_need_explicit_conf(cmd, 0)) { 3296 pkt->u.status0.flags |= 3297 cpu_to_le16( 3298 CTIO7_FLAGS_EXPLICIT_CONFORM | 3299 CTIO7_FLAGS_CONFORM_REQ); 3300 } 3301 } 3302 3303 } else { 3304 /* 3305 * We have already made sure that there is sufficient 3306 * amount of request entries to not drop HW lock in 3307 * req_pkt(). 3308 */ 3309 struct ctio7_to_24xx *ctio = 3310 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3311 qpair->req); 3312 3313 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3314 "Building additional status packet 0x%p.\n", 3315 ctio); 3316 3317 /* 3318 * T10Dif: ctio_crc2_to_fw overlay ontop of 3319 * ctio7_to_24xx 3320 */ 3321 memcpy(ctio, pkt, sizeof(*ctio)); 3322 /* reset back to CTIO7 */ 3323 ctio->entry_count = 1; 3324 ctio->entry_type = CTIO_TYPE7; 3325 ctio->dseg_count = 0; 3326 ctio->u.status1.flags &= ~cpu_to_le16( 3327 CTIO7_FLAGS_DATA_IN); 3328 3329 /* Real finish is ctio_m1's finish */ 3330 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3331 pkt->u.status0.flags |= cpu_to_le16( 3332 CTIO7_FLAGS_DONT_RET_CTIO); 3333 3334 /* qlt_24xx_init_ctio_to_isp will correct 3335 * all neccessary fields that's part of CTIO7. 3336 * There should be no residual of CTIO-CRC2 data. 3337 */ 3338 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3339 &prm); 3340 } 3341 } else 3342 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3343 3344 3345 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3346 cmd->cmd_sent_to_fw = 1; 3347 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3348 3349 /* Memory Barrier */ 3350 wmb(); 3351 if (qpair->reqq_start_iocbs) 3352 qpair->reqq_start_iocbs(qpair); 3353 else 3354 qla2x00_start_iocbs(vha, qpair->req); 3355 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3356 3357 return 0; 3358 3359out_unmap_unlock: 3360 qlt_unmap_sg(vha, cmd); 3361 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3362 3363 return res; 3364} 3365EXPORT_SYMBOL(qlt_xmit_response); 3366 3367int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3368{ 3369 struct ctio7_to_24xx *pkt; 3370 struct scsi_qla_host *vha = cmd->vha; 3371 struct qla_tgt *tgt = cmd->tgt; 3372 struct qla_tgt_prm prm; 3373 unsigned long flags = 0; 3374 int res = 0; 3375 struct qla_qpair *qpair = cmd->qpair; 3376 3377 memset(&prm, 0, sizeof(prm)); 3378 prm.cmd = cmd; 3379 prm.tgt = tgt; 3380 prm.sg = NULL; 3381 prm.req_cnt = 1; 3382 3383 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3384 (cmd->sess && cmd->sess->deleted)) { 3385 /* 3386 * Either the port is not online or this request was from 3387 * previous life, just abort the processing. 3388 */ 3389 cmd->aborted = 1; 3390 cmd->write_data_transferred = 0; 3391 cmd->state = QLA_TGT_STATE_DATA_IN; 3392 vha->hw->tgt.tgt_ops->handle_data(cmd); 3393 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3394 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3395 vha->flags.online, qla2x00_reset_active(vha), 3396 cmd->reset_count, qpair->chip_reset); 3397 return 0; 3398 } 3399 3400 /* Calculate number of entries and segments required */ 3401 if (qlt_pci_map_calc_cnt(&prm) != 0) 3402 return -EAGAIN; 3403 3404 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3405 /* Does F/W have an IOCBs for this request */ 3406 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3407 if (res != 0) 3408 goto out_unlock_free_unmap; 3409 if (cmd->se_cmd.prot_op) 3410 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3411 else 3412 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3413 3414 if (unlikely(res != 0)) { 3415 qpair->req->cnt += prm.req_cnt; 3416 goto out_unlock_free_unmap; 3417 } 3418 3419 pkt = (struct ctio7_to_24xx *)prm.pkt; 3420 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3421 CTIO7_FLAGS_STATUS_MODE_0); 3422 3423 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3424 qlt_load_data_segments(&prm); 3425 3426 cmd->state = QLA_TGT_STATE_NEED_DATA; 3427 cmd->cmd_sent_to_fw = 1; 3428 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3429 3430 /* Memory Barrier */ 3431 wmb(); 3432 if (qpair->reqq_start_iocbs) 3433 qpair->reqq_start_iocbs(qpair); 3434 else 3435 qla2x00_start_iocbs(vha, qpair->req); 3436 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3437 3438 return res; 3439 3440out_unlock_free_unmap: 3441 qlt_unmap_sg(vha, cmd); 3442 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3443 3444 return res; 3445} 3446EXPORT_SYMBOL(qlt_rdy_to_xfer); 3447 3448 3449/* 3450 * it is assumed either hardware_lock or qpair lock is held. 3451 */ 3452static void 3453qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3454 struct ctio_crc_from_fw *sts) 3455{ 3456 uint8_t *ap = &sts->actual_dif[0]; 3457 uint8_t *ep = &sts->expected_dif[0]; 3458 uint64_t lba = cmd->se_cmd.t_task_lba; 3459 uint8_t scsi_status, sense_key, asc, ascq; 3460 unsigned long flags; 3461 struct scsi_qla_host *vha = cmd->vha; 3462 3463 cmd->trc_flags |= TRC_DIF_ERR; 3464 3465 cmd->a_guard = get_unaligned_be16(ap + 0); 3466 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3467 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3468 3469 cmd->e_guard = get_unaligned_be16(ep + 0); 3470 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3471 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3472 3473 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3474 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3475 3476 scsi_status = sense_key = asc = ascq = 0; 3477 3478 /* check appl tag */ 3479 if (cmd->e_app_tag != cmd->a_app_tag) { 3480 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3481 "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]", 3482 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3483 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3484 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3485 cmd->atio.u.isp24.fcp_hdr.ox_id); 3486 3487 cmd->dif_err_code = DIF_ERR_APP; 3488 scsi_status = SAM_STAT_CHECK_CONDITION; 3489 sense_key = ABORTED_COMMAND; 3490 asc = 0x10; 3491 ascq = 0x2; 3492 } 3493 3494 /* check ref tag */ 3495 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3496 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3497 "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] ", 3498 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3499 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3500 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3501 cmd->atio.u.isp24.fcp_hdr.ox_id); 3502 3503 cmd->dif_err_code = DIF_ERR_REF; 3504 scsi_status = SAM_STAT_CHECK_CONDITION; 3505 sense_key = ABORTED_COMMAND; 3506 asc = 0x10; 3507 ascq = 0x3; 3508 goto out; 3509 } 3510 3511 /* check guard */ 3512 if (cmd->e_guard != cmd->a_guard) { 3513 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3514 "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]", 3515 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3516 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3517 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3518 cmd->atio.u.isp24.fcp_hdr.ox_id); 3519 3520 cmd->dif_err_code = DIF_ERR_GRD; 3521 scsi_status = SAM_STAT_CHECK_CONDITION; 3522 sense_key = ABORTED_COMMAND; 3523 asc = 0x10; 3524 ascq = 0x1; 3525 } 3526out: 3527 switch (cmd->state) { 3528 case QLA_TGT_STATE_NEED_DATA: 3529 /* handle_data will load DIF error code */ 3530 cmd->state = QLA_TGT_STATE_DATA_IN; 3531 vha->hw->tgt.tgt_ops->handle_data(cmd); 3532 break; 3533 default: 3534 spin_lock_irqsave(&cmd->cmd_lock, flags); 3535 if (cmd->aborted) { 3536 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3537 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3538 break; 3539 } 3540 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3541 3542 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3543 ascq); 3544 /* assume scsi status gets out on the wire. 3545 * Will not wait for completion. 3546 */ 3547 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3548 break; 3549 } 3550} 3551 3552/* If hardware_lock held on entry, might drop it, then reaquire */ 3553/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3554static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3555 struct imm_ntfy_from_isp *ntfy) 3556{ 3557 struct nack_to_isp *nack; 3558 struct qla_hw_data *ha = vha->hw; 3559 request_t *pkt; 3560 int ret = 0; 3561 3562 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3563 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3564 3565 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3566 if (pkt == NULL) { 3567 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3568 "qla_target(%d): %s failed: unable to allocate " 3569 "request packet\n", vha->vp_idx, __func__); 3570 return -ENOMEM; 3571 } 3572 3573 pkt->entry_type = NOTIFY_ACK_TYPE; 3574 pkt->entry_count = 1; 3575 pkt->handle = QLA_TGT_SKIP_HANDLE; 3576 3577 nack = (struct nack_to_isp *)pkt; 3578 nack->ox_id = ntfy->ox_id; 3579 3580 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3581 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3582 nack->u.isp24.flags = ntfy->u.isp24.flags & 3583 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3584 } 3585 3586 /* terminate */ 3587 nack->u.isp24.flags |= 3588 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3589 3590 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3591 nack->u.isp24.status = ntfy->u.isp24.status; 3592 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3593 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3594 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3595 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3596 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3597 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3598 3599 qla2x00_start_iocbs(vha, vha->req); 3600 return ret; 3601} 3602 3603static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3604 struct imm_ntfy_from_isp *imm, int ha_locked) 3605{ 3606 int rc; 3607 3608 WARN_ON_ONCE(!ha_locked); 3609 rc = __qlt_send_term_imm_notif(vha, imm); 3610 pr_debug("rc = %d\n", rc); 3611} 3612 3613/* 3614 * If hardware_lock held on entry, might drop it, then reaquire 3615 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3616 */ 3617static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3618 struct qla_tgt_cmd *cmd, 3619 struct atio_from_isp *atio) 3620{ 3621 struct scsi_qla_host *vha = qpair->vha; 3622 struct ctio7_to_24xx *ctio24; 3623 struct qla_hw_data *ha = vha->hw; 3624 request_t *pkt; 3625 int ret = 0; 3626 uint16_t temp; 3627 3628 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3629 3630 if (cmd) 3631 vha = cmd->vha; 3632 3633 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3634 if (pkt == NULL) { 3635 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3636 "qla_target(%d): %s failed: unable to allocate " 3637 "request packet\n", vha->vp_idx, __func__); 3638 return -ENOMEM; 3639 } 3640 3641 if (cmd != NULL) { 3642 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3643 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3644 "qla_target(%d): Terminating cmd %p with " 3645 "incorrect state %d\n", vha->vp_idx, cmd, 3646 cmd->state); 3647 } else 3648 ret = 1; 3649 } 3650 3651 qpair->tgt_counters.num_term_xchg_sent++; 3652 pkt->entry_count = 1; 3653 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3654 3655 ctio24 = (struct ctio7_to_24xx *)pkt; 3656 ctio24->entry_type = CTIO_TYPE7; 3657 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3658 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3659 ctio24->vp_index = vha->vp_idx; 3660 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3661 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3662 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3663 CTIO7_FLAGS_TERMINATE; 3664 ctio24->u.status1.flags = cpu_to_le16(temp); 3665 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3666 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3667 3668 /* Memory Barrier */ 3669 wmb(); 3670 if (qpair->reqq_start_iocbs) 3671 qpair->reqq_start_iocbs(qpair); 3672 else 3673 qla2x00_start_iocbs(vha, qpair->req); 3674 return ret; 3675} 3676 3677static void qlt_send_term_exchange(struct qla_qpair *qpair, 3678 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3679 int ul_abort) 3680{ 3681 struct scsi_qla_host *vha; 3682 unsigned long flags = 0; 3683 int rc; 3684 3685 /* why use different vha? NPIV */ 3686 if (cmd) 3687 vha = cmd->vha; 3688 else 3689 vha = qpair->vha; 3690 3691 if (ha_locked) { 3692 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3693 if (rc == -ENOMEM) 3694 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3695 goto done; 3696 } 3697 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3698 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3699 if (rc == -ENOMEM) 3700 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3701 3702done: 3703 if (cmd && !ul_abort && !cmd->aborted) { 3704 if (cmd->sg_mapped) 3705 qlt_unmap_sg(vha, cmd); 3706 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3707 } 3708 3709 if (!ha_locked) 3710 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3711 3712 return; 3713} 3714 3715static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3716{ 3717 struct list_head free_list; 3718 struct qla_tgt_cmd *cmd, *tcmd; 3719 3720 vha->hw->tgt.leak_exchg_thresh_hold = 3721 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3722 3723 cmd = tcmd = NULL; 3724 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3725 INIT_LIST_HEAD(&free_list); 3726 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3727 3728 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3729 list_del(&cmd->cmd_list); 3730 /* This cmd was never sent to TCM. There is no need 3731 * to schedule free or call free_cmd 3732 */ 3733 qlt_free_cmd(cmd); 3734 vha->hw->tgt.num_qfull_cmds_alloc--; 3735 } 3736 } 3737 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3738} 3739 3740static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3741{ 3742 uint32_t total_leaked; 3743 3744 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3745 3746 if (vha->hw->tgt.leak_exchg_thresh_hold && 3747 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3748 3749 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3750 "Chip reset due to exchange starvation: %d/%d.\n", 3751 total_leaked, vha->hw->cur_fw_xcb_count); 3752 3753 if (IS_P3P_TYPE(vha->hw)) 3754 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3755 else 3756 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3757 qla2xxx_wake_dpc(vha); 3758 } 3759 3760} 3761 3762int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3763{ 3764 struct qla_tgt *tgt = cmd->tgt; 3765 struct scsi_qla_host *vha = tgt->vha; 3766 struct se_cmd *se_cmd = &cmd->se_cmd; 3767 unsigned long flags; 3768 3769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3770 "qla_target(%d): terminating exchange for aborted cmd=%p " 3771 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3772 se_cmd->tag); 3773 3774 spin_lock_irqsave(&cmd->cmd_lock, flags); 3775 if (cmd->aborted) { 3776 if (cmd->sg_mapped) 3777 qlt_unmap_sg(vha, cmd); 3778 3779 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3780 /* 3781 * It's normal to see 2 calls in this path: 3782 * 1) XFER Rdy completion + CMD_T_ABORT 3783 * 2) TCM TMR - drain_state_list 3784 */ 3785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3786 "multiple abort. %p transport_state %x, t_state %x, " 3787 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3788 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3789 return -EIO; 3790 } 3791 cmd->aborted = 1; 3792 cmd->trc_flags |= TRC_ABORT; 3793 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3794 3795 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3796 return 0; 3797} 3798EXPORT_SYMBOL(qlt_abort_cmd); 3799 3800void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3801{ 3802 struct fc_port *sess = cmd->sess; 3803 3804 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3805 "%s: se_cmd[%p] ox_id %04x\n", 3806 __func__, &cmd->se_cmd, 3807 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3808 3809 BUG_ON(cmd->cmd_in_wq); 3810 3811 if (!cmd->q_full) 3812 qlt_decr_num_pend_cmds(cmd->vha); 3813 3814 BUG_ON(cmd->sg_mapped); 3815 cmd->jiffies_at_free = get_jiffies_64(); 3816 if (unlikely(cmd->free_sg)) 3817 kfree(cmd->sg); 3818 3819 if (!sess || !sess->se_sess) { 3820 WARN_ON(1); 3821 return; 3822 } 3823 cmd->jiffies_at_free = get_jiffies_64(); 3824 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3825} 3826EXPORT_SYMBOL(qlt_free_cmd); 3827 3828/* 3829 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3830 */ 3831static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3832 struct qla_tgt_cmd *cmd, uint32_t status) 3833{ 3834 int term = 0; 3835 struct scsi_qla_host *vha = qpair->vha; 3836 3837 if (cmd->se_cmd.prot_op) 3838 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3839 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3840 "se_cmd=%p tag[%x] op %#x/%s", 3841 cmd->lba, cmd->lba, 3842 cmd->num_blks, &cmd->se_cmd, 3843 cmd->atio.u.isp24.exchange_addr, 3844 cmd->se_cmd.prot_op, 3845 prot_op_str(cmd->se_cmd.prot_op)); 3846 3847 if (ctio != NULL) { 3848 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3849 3850 term = !(c->flags & 3851 cpu_to_le16(OF_TERM_EXCH)); 3852 } else 3853 term = 1; 3854 3855 if (term) 3856 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3857 3858 return term; 3859} 3860 3861 3862/* ha->hardware_lock supposed to be held on entry */ 3863static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3864 struct rsp_que *rsp, uint32_t handle, void *ctio) 3865{ 3866 void *cmd = NULL; 3867 struct req_que *req; 3868 int qid = GET_QID(handle); 3869 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3870 3871 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3872 return NULL; 3873 3874 if (qid == rsp->req->id) { 3875 req = rsp->req; 3876 } else if (vha->hw->req_q_map[qid]) { 3877 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3878 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3879 vha->vp_idx, rsp->id, handle); 3880 req = vha->hw->req_q_map[qid]; 3881 } else { 3882 return NULL; 3883 } 3884 3885 h &= QLA_CMD_HANDLE_MASK; 3886 3887 if (h != QLA_TGT_NULL_HANDLE) { 3888 if (unlikely(h >= req->num_outstanding_cmds)) { 3889 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3890 "qla_target(%d): Wrong handle %x received\n", 3891 vha->vp_idx, handle); 3892 return NULL; 3893 } 3894 3895 cmd = req->outstanding_cmds[h]; 3896 if (unlikely(cmd == NULL)) { 3897 ql_dbg(ql_dbg_async, vha, 0xe053, 3898 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3899 vha->vp_idx, handle, req->id, rsp->id); 3900 return NULL; 3901 } 3902 req->outstanding_cmds[h] = NULL; 3903 } else if (ctio != NULL) { 3904 /* We can't get loop ID from CTIO7 */ 3905 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3906 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3907 "support NULL handles\n", vha->vp_idx); 3908 return NULL; 3909 } 3910 3911 return cmd; 3912} 3913 3914/* 3915 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3916 */ 3917static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3918 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3919{ 3920 struct qla_hw_data *ha = vha->hw; 3921 struct se_cmd *se_cmd; 3922 struct qla_tgt_cmd *cmd; 3923 struct qla_qpair *qpair = rsp->qpair; 3924 3925 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3926 /* That could happen only in case of an error/reset/abort */ 3927 if (status != CTIO_SUCCESS) { 3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3929 "Intermediate CTIO received" 3930 " (status %x)\n", status); 3931 } 3932 return; 3933 } 3934 3935 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3936 if (cmd == NULL) 3937 return; 3938 3939 se_cmd = &cmd->se_cmd; 3940 cmd->cmd_sent_to_fw = 0; 3941 3942 qlt_unmap_sg(vha, cmd); 3943 3944 if (unlikely(status != CTIO_SUCCESS)) { 3945 switch (status & 0xFFFF) { 3946 case CTIO_INVALID_RX_ID: 3947 if (printk_ratelimit()) 3948 dev_info(&vha->hw->pdev->dev, 3949 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3950 vha->vp_idx, cmd->atio.u.isp24.attr, 3951 ((cmd->ctio_flags >> 9) & 0xf), 3952 cmd->ctio_flags); 3953 3954 break; 3955 case CTIO_LIP_RESET: 3956 case CTIO_TARGET_RESET: 3957 case CTIO_ABORTED: 3958 /* driver request abort via Terminate exchange */ 3959 case CTIO_TIMEOUT: 3960 /* They are OK */ 3961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3962 "qla_target(%d): CTIO with " 3963 "status %#x received, state %x, se_cmd %p, " 3964 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3965 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3966 status, cmd->state, se_cmd); 3967 break; 3968 3969 case CTIO_PORT_LOGGED_OUT: 3970 case CTIO_PORT_UNAVAILABLE: 3971 { 3972 int logged_out = 3973 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3974 3975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3976 "qla_target(%d): CTIO with %s status %x " 3977 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3978 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3979 status, cmd->state, se_cmd); 3980 3981 if (logged_out && cmd->sess) { 3982 /* 3983 * Session is already logged out, but we need 3984 * to notify initiator, who's not aware of this 3985 */ 3986 cmd->sess->send_els_logo = 1; 3987 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3988 "%s %d %8phC post del sess\n", 3989 __func__, __LINE__, cmd->sess->port_name); 3990 3991 qlt_schedule_sess_for_deletion(cmd->sess); 3992 } 3993 break; 3994 } 3995 case CTIO_DIF_ERROR: { 3996 struct ctio_crc_from_fw *crc = 3997 (struct ctio_crc_from_fw *)ctio; 3998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3999 "qla_target(%d): CTIO with DIF_ERROR status %x " 4000 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4001 "expect_dif[0x%llx]\n", 4002 vha->vp_idx, status, cmd->state, se_cmd, 4003 *((u64 *)&crc->actual_dif[0]), 4004 *((u64 *)&crc->expected_dif[0])); 4005 4006 qlt_handle_dif_error(qpair, cmd, ctio); 4007 return; 4008 } 4009 default: 4010 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4011 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4012 vha->vp_idx, status, cmd->state, se_cmd); 4013 break; 4014 } 4015 4016 4017 /* "cmd->aborted" means 4018 * cmd is already aborted/terminated, we don't 4019 * need to terminate again. The exchange is already 4020 * cleaned up/freed at FW level. Just cleanup at driver 4021 * level. 4022 */ 4023 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4024 (!cmd->aborted)) { 4025 cmd->trc_flags |= TRC_CTIO_ERR; 4026 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4027 return; 4028 } 4029 } 4030 4031 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4032 cmd->trc_flags |= TRC_CTIO_DONE; 4033 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4034 cmd->state = QLA_TGT_STATE_DATA_IN; 4035 4036 if (status == CTIO_SUCCESS) 4037 cmd->write_data_transferred = 1; 4038 4039 ha->tgt.tgt_ops->handle_data(cmd); 4040 return; 4041 } else if (cmd->aborted) { 4042 cmd->trc_flags |= TRC_CTIO_ABORTED; 4043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4044 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4045 } else { 4046 cmd->trc_flags |= TRC_CTIO_STRANGE; 4047 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4048 "qla_target(%d): A command in state (%d) should " 4049 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4050 } 4051 4052 if (unlikely(status != CTIO_SUCCESS) && 4053 !cmd->aborted) { 4054 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4055 dump_stack(); 4056 } 4057 4058 ha->tgt.tgt_ops->free_cmd(cmd); 4059} 4060 4061static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4062 uint8_t task_codes) 4063{ 4064 int fcp_task_attr; 4065 4066 switch (task_codes) { 4067 case ATIO_SIMPLE_QUEUE: 4068 fcp_task_attr = TCM_SIMPLE_TAG; 4069 break; 4070 case ATIO_HEAD_OF_QUEUE: 4071 fcp_task_attr = TCM_HEAD_TAG; 4072 break; 4073 case ATIO_ORDERED_QUEUE: 4074 fcp_task_attr = TCM_ORDERED_TAG; 4075 break; 4076 case ATIO_ACA_QUEUE: 4077 fcp_task_attr = TCM_ACA_TAG; 4078 break; 4079 case ATIO_UNTAGGED: 4080 fcp_task_attr = TCM_SIMPLE_TAG; 4081 break; 4082 default: 4083 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4084 "qla_target: unknown task code %x, use ORDERED instead\n", 4085 task_codes); 4086 fcp_task_attr = TCM_ORDERED_TAG; 4087 break; 4088 } 4089 4090 return fcp_task_attr; 4091} 4092 4093/* 4094 * Process context for I/O path into tcm_qla2xxx code 4095 */ 4096static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4097{ 4098 scsi_qla_host_t *vha = cmd->vha; 4099 struct qla_hw_data *ha = vha->hw; 4100 struct fc_port *sess = cmd->sess; 4101 struct atio_from_isp *atio = &cmd->atio; 4102 unsigned char *cdb; 4103 unsigned long flags; 4104 uint32_t data_length; 4105 int ret, fcp_task_attr, data_dir, bidi = 0; 4106 struct qla_qpair *qpair = cmd->qpair; 4107 4108 cmd->cmd_in_wq = 0; 4109 cmd->trc_flags |= TRC_DO_WORK; 4110 4111 if (cmd->aborted) { 4112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4113 "cmd with tag %u is aborted\n", 4114 cmd->atio.u.isp24.exchange_addr); 4115 goto out_term; 4116 } 4117 4118 spin_lock_init(&cmd->cmd_lock); 4119 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4120 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4121 4122 if (atio->u.isp24.fcp_cmnd.rddata && 4123 atio->u.isp24.fcp_cmnd.wrdata) { 4124 bidi = 1; 4125 data_dir = DMA_TO_DEVICE; 4126 } else if (atio->u.isp24.fcp_cmnd.rddata) 4127 data_dir = DMA_FROM_DEVICE; 4128 else if (atio->u.isp24.fcp_cmnd.wrdata) 4129 data_dir = DMA_TO_DEVICE; 4130 else 4131 data_dir = DMA_NONE; 4132 4133 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4134 atio->u.isp24.fcp_cmnd.task_attr); 4135 data_length = get_datalen_for_atio(atio); 4136 4137 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4138 fcp_task_attr, data_dir, bidi); 4139 if (ret != 0) 4140 goto out_term; 4141 /* 4142 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4143 */ 4144 ha->tgt.tgt_ops->put_sess(sess); 4145 return; 4146 4147out_term: 4148 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4149 /* 4150 * cmd has not sent to target yet, so pass NULL as the second 4151 * argument to qlt_send_term_exchange() and free the memory here. 4152 */ 4153 cmd->trc_flags |= TRC_DO_WORK_ERR; 4154 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4155 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4156 4157 qlt_decr_num_pend_cmds(vha); 4158 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4159 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4160 4161 ha->tgt.tgt_ops->put_sess(sess); 4162} 4163 4164static void qlt_do_work(struct work_struct *work) 4165{ 4166 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4167 scsi_qla_host_t *vha = cmd->vha; 4168 unsigned long flags; 4169 4170 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4171 list_del(&cmd->cmd_list); 4172 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4173 4174 __qlt_do_work(cmd); 4175} 4176 4177void qlt_clr_qp_table(struct scsi_qla_host *vha) 4178{ 4179 unsigned long flags; 4180 struct qla_hw_data *ha = vha->hw; 4181 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4182 void *node; 4183 u64 key = 0; 4184 4185 ql_log(ql_log_info, vha, 0x706c, 4186 "User update Number of Active Qpairs %d\n", 4187 ha->tgt.num_act_qpairs); 4188 4189 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4190 4191 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4192 btree_remove64(&tgt->lun_qpair_map, key); 4193 4194 ha->base_qpair->lun_cnt = 0; 4195 for (key = 0; key < ha->max_qpairs; key++) 4196 if (ha->queue_pair_map[key]) 4197 ha->queue_pair_map[key]->lun_cnt = 0; 4198 4199 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4200} 4201 4202static void qlt_assign_qpair(struct scsi_qla_host *vha, 4203 struct qla_tgt_cmd *cmd) 4204{ 4205 struct qla_qpair *qpair, *qp; 4206 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4207 struct qla_qpair_hint *h; 4208 4209 if (vha->flags.qpairs_available) { 4210 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4211 if (unlikely(!h)) { 4212 /* spread lun to qpair ratio evently */ 4213 int lcnt = 0, rc; 4214 struct scsi_qla_host *base_vha = 4215 pci_get_drvdata(vha->hw->pdev); 4216 4217 qpair = vha->hw->base_qpair; 4218 if (qpair->lun_cnt == 0) { 4219 qpair->lun_cnt++; 4220 h = qla_qpair_to_hint(tgt, qpair); 4221 BUG_ON(!h); 4222 rc = btree_insert64(&tgt->lun_qpair_map, 4223 cmd->unpacked_lun, h, GFP_ATOMIC); 4224 if (rc) { 4225 qpair->lun_cnt--; 4226 ql_log(ql_log_info, vha, 0xd037, 4227 "Unable to insert lun %llx into lun_qpair_map\n", 4228 cmd->unpacked_lun); 4229 } 4230 goto out; 4231 } else { 4232 lcnt = qpair->lun_cnt; 4233 } 4234 4235 h = NULL; 4236 list_for_each_entry(qp, &base_vha->qp_list, 4237 qp_list_elem) { 4238 if (qp->lun_cnt == 0) { 4239 qp->lun_cnt++; 4240 h = qla_qpair_to_hint(tgt, qp); 4241 BUG_ON(!h); 4242 rc = btree_insert64(&tgt->lun_qpair_map, 4243 cmd->unpacked_lun, h, GFP_ATOMIC); 4244 if (rc) { 4245 qp->lun_cnt--; 4246 ql_log(ql_log_info, vha, 0xd038, 4247 "Unable to insert lun %llx into lun_qpair_map\n", 4248 cmd->unpacked_lun); 4249 } 4250 qpair = qp; 4251 goto out; 4252 } else { 4253 if (qp->lun_cnt < lcnt) { 4254 lcnt = qp->lun_cnt; 4255 qpair = qp; 4256 continue; 4257 } 4258 } 4259 } 4260 BUG_ON(!qpair); 4261 qpair->lun_cnt++; 4262 h = qla_qpair_to_hint(tgt, qpair); 4263 BUG_ON(!h); 4264 rc = btree_insert64(&tgt->lun_qpair_map, 4265 cmd->unpacked_lun, h, GFP_ATOMIC); 4266 if (rc) { 4267 qpair->lun_cnt--; 4268 ql_log(ql_log_info, vha, 0xd039, 4269 "Unable to insert lun %llx into lun_qpair_map\n", 4270 cmd->unpacked_lun); 4271 } 4272 } 4273 } else { 4274 h = &tgt->qphints[0]; 4275 } 4276out: 4277 cmd->qpair = h->qpair; 4278 cmd->se_cmd.cpuid = h->cpuid; 4279} 4280 4281static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4282 struct fc_port *sess, 4283 struct atio_from_isp *atio) 4284{ 4285 struct qla_tgt_cmd *cmd; 4286 4287 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4288 if (!cmd) 4289 return NULL; 4290 4291 cmd->cmd_type = TYPE_TGT_CMD; 4292 memcpy(&cmd->atio, atio, sizeof(*atio)); 4293 cmd->state = QLA_TGT_STATE_NEW; 4294 cmd->tgt = vha->vha_tgt.qla_tgt; 4295 qlt_incr_num_pend_cmds(vha); 4296 cmd->vha = vha; 4297 cmd->sess = sess; 4298 cmd->loop_id = sess->loop_id; 4299 cmd->conf_compl_supported = sess->conf_compl_supported; 4300 4301 cmd->trc_flags = 0; 4302 cmd->jiffies_at_alloc = get_jiffies_64(); 4303 4304 cmd->unpacked_lun = scsilun_to_int( 4305 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4306 qlt_assign_qpair(vha, cmd); 4307 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4308 cmd->vp_idx = vha->vp_idx; 4309 4310 return cmd; 4311} 4312 4313/* ha->hardware_lock supposed to be held on entry */ 4314static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4315 struct atio_from_isp *atio) 4316{ 4317 struct qla_hw_data *ha = vha->hw; 4318 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4319 struct fc_port *sess; 4320 struct qla_tgt_cmd *cmd; 4321 unsigned long flags; 4322 port_id_t id; 4323 4324 if (unlikely(tgt->tgt_stop)) { 4325 ql_dbg(ql_dbg_io, vha, 0x3061, 4326 "New command while device %p is shutting down\n", tgt); 4327 return -ENODEV; 4328 } 4329 4330 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4331 if (IS_SW_RESV_ADDR(id)) 4332 return -EBUSY; 4333 4334 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4335 if (unlikely(!sess)) 4336 return -EFAULT; 4337 4338 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4339 * session deletion, but it's still in sess_del_work wq */ 4340 if (sess->deleted) { 4341 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4342 "New command while old session %p is being deleted\n", 4343 sess); 4344 return -EFAULT; 4345 } 4346 4347 /* 4348 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4349 */ 4350 if (!kref_get_unless_zero(&sess->sess_kref)) { 4351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4352 "%s: kref_get fail, %8phC oxid %x \n", 4353 __func__, sess->port_name, 4354 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4355 return -EFAULT; 4356 } 4357 4358 cmd = qlt_get_tag(vha, sess, atio); 4359 if (!cmd) { 4360 ql_dbg(ql_dbg_io, vha, 0x3062, 4361 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4362 ha->tgt.tgt_ops->put_sess(sess); 4363 return -EBUSY; 4364 } 4365 4366 cmd->cmd_in_wq = 1; 4367 cmd->trc_flags |= TRC_NEW_CMD; 4368 4369 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4370 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4371 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4372 4373 INIT_WORK(&cmd->work, qlt_do_work); 4374 if (vha->flags.qpairs_available) { 4375 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4376 } else if (ha->msix_count) { 4377 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4378 queue_work_on(smp_processor_id(), qla_tgt_wq, 4379 &cmd->work); 4380 else 4381 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4382 &cmd->work); 4383 } else { 4384 queue_work(qla_tgt_wq, &cmd->work); 4385 } 4386 4387 return 0; 4388} 4389 4390/* ha->hardware_lock supposed to be held on entry */ 4391static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4392 int fn, void *iocb, int flags) 4393{ 4394 struct scsi_qla_host *vha = sess->vha; 4395 struct qla_hw_data *ha = vha->hw; 4396 struct qla_tgt_mgmt_cmd *mcmd; 4397 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4398 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4399 4400 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4401 if (!mcmd) { 4402 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4403 "qla_target(%d): Allocation of management " 4404 "command failed, some commands and their data could " 4405 "leak\n", vha->vp_idx); 4406 return -ENOMEM; 4407 } 4408 memset(mcmd, 0, sizeof(*mcmd)); 4409 mcmd->sess = sess; 4410 4411 if (iocb) { 4412 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4413 sizeof(mcmd->orig_iocb.imm_ntfy)); 4414 } 4415 mcmd->tmr_func = fn; 4416 mcmd->flags = flags; 4417 mcmd->reset_count = ha->base_qpair->chip_reset; 4418 mcmd->qpair = h->qpair; 4419 mcmd->vha = vha; 4420 mcmd->se_cmd.cpuid = h->cpuid; 4421 mcmd->unpacked_lun = lun; 4422 4423 switch (fn) { 4424 case QLA_TGT_LUN_RESET: 4425 case QLA_TGT_CLEAR_TS: 4426 case QLA_TGT_ABORT_TS: 4427 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4428 fallthrough; 4429 case QLA_TGT_CLEAR_ACA: 4430 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4431 mcmd->qpair = h->qpair; 4432 mcmd->se_cmd.cpuid = h->cpuid; 4433 break; 4434 4435 case QLA_TGT_TARGET_RESET: 4436 case QLA_TGT_NEXUS_LOSS_SESS: 4437 case QLA_TGT_NEXUS_LOSS: 4438 case QLA_TGT_ABORT_ALL: 4439 default: 4440 /* no-op */ 4441 break; 4442 } 4443 4444 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4445 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4446 &mcmd->work); 4447 4448 return 0; 4449} 4450 4451/* ha->hardware_lock supposed to be held on entry */ 4452static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4453{ 4454 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4455 struct qla_hw_data *ha = vha->hw; 4456 struct fc_port *sess; 4457 u64 unpacked_lun; 4458 int fn; 4459 unsigned long flags; 4460 4461 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4462 4463 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4464 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4465 a->u.isp24.fcp_hdr.s_id); 4466 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4467 4468 unpacked_lun = 4469 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4470 4471 if (sess == NULL || sess->deleted) 4472 return -EFAULT; 4473 4474 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4475} 4476 4477/* ha->hardware_lock supposed to be held on entry */ 4478static int __qlt_abort_task(struct scsi_qla_host *vha, 4479 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4480{ 4481 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4482 struct qla_hw_data *ha = vha->hw; 4483 struct qla_tgt_mgmt_cmd *mcmd; 4484 u64 unpacked_lun; 4485 int rc; 4486 4487 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4488 if (mcmd == NULL) { 4489 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4490 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4491 vha->vp_idx, __func__); 4492 return -ENOMEM; 4493 } 4494 memset(mcmd, 0, sizeof(*mcmd)); 4495 4496 mcmd->sess = sess; 4497 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4498 sizeof(mcmd->orig_iocb.imm_ntfy)); 4499 4500 unpacked_lun = 4501 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4502 mcmd->reset_count = ha->base_qpair->chip_reset; 4503 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4504 mcmd->qpair = ha->base_qpair; 4505 4506 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4507 le16_to_cpu(iocb->u.isp2x.seq_id)); 4508 if (rc != 0) { 4509 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4510 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4511 vha->vp_idx, rc); 4512 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4513 return -EFAULT; 4514 } 4515 4516 return 0; 4517} 4518 4519/* ha->hardware_lock supposed to be held on entry */ 4520static int qlt_abort_task(struct scsi_qla_host *vha, 4521 struct imm_ntfy_from_isp *iocb) 4522{ 4523 struct qla_hw_data *ha = vha->hw; 4524 struct fc_port *sess; 4525 int loop_id; 4526 unsigned long flags; 4527 4528 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4529 4530 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4531 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4532 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4533 4534 if (sess == NULL) { 4535 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4536 "qla_target(%d): task abort for unexisting " 4537 "session\n", vha->vp_idx); 4538 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4539 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4540 } 4541 4542 return __qlt_abort_task(vha, iocb, sess); 4543} 4544 4545void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4546{ 4547 if (rc != MBS_COMMAND_COMPLETE) { 4548 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4549 "%s: se_sess %p / sess %p from" 4550 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4551 " LOGO failed: %#x\n", 4552 __func__, 4553 fcport->se_sess, 4554 fcport, 4555 fcport->port_name, fcport->loop_id, 4556 fcport->d_id.b.domain, fcport->d_id.b.area, 4557 fcport->d_id.b.al_pa, rc); 4558 } 4559 4560 fcport->logout_completed = 1; 4561} 4562 4563/* 4564* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4565* 4566* Schedules sessions with matching port_id/loop_id but different wwn for 4567* deletion. Returns existing session with matching wwn if present. 4568* Null otherwise. 4569*/ 4570struct fc_port * 4571qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4572 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4573{ 4574 struct fc_port *sess = NULL, *other_sess; 4575 uint64_t other_wwn; 4576 4577 *conflict_sess = NULL; 4578 4579 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4580 4581 other_wwn = wwn_to_u64(other_sess->port_name); 4582 4583 if (wwn == other_wwn) { 4584 WARN_ON(sess); 4585 sess = other_sess; 4586 continue; 4587 } 4588 4589 /* find other sess with nport_id collision */ 4590 if (port_id.b24 == other_sess->d_id.b24) { 4591 if (loop_id != other_sess->loop_id) { 4592 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4593 "Invalidating sess %p loop_id %d wwn %llx.\n", 4594 other_sess, other_sess->loop_id, other_wwn); 4595 4596 /* 4597 * logout_on_delete is set by default, but another 4598 * session that has the same s_id/loop_id combo 4599 * might have cleared it when requested this session 4600 * deletion, so don't touch it 4601 */ 4602 qlt_schedule_sess_for_deletion(other_sess); 4603 } else { 4604 /* 4605 * Another wwn used to have our s_id/loop_id 4606 * kill the session, but don't free the loop_id 4607 */ 4608 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4609 "Invalidating sess %p loop_id %d wwn %llx.\n", 4610 other_sess, other_sess->loop_id, other_wwn); 4611 4612 other_sess->keep_nport_handle = 1; 4613 if (other_sess->disc_state != DSC_DELETED) 4614 *conflict_sess = other_sess; 4615 qlt_schedule_sess_for_deletion(other_sess); 4616 } 4617 continue; 4618 } 4619 4620 /* find other sess with nport handle collision */ 4621 if ((loop_id == other_sess->loop_id) && 4622 (loop_id != FC_NO_LOOP_ID)) { 4623 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4624 "Invalidating sess %p loop_id %d wwn %llx.\n", 4625 other_sess, other_sess->loop_id, other_wwn); 4626 4627 /* Same loop_id but different s_id 4628 * Ok to kill and logout */ 4629 qlt_schedule_sess_for_deletion(other_sess); 4630 } 4631 } 4632 4633 return sess; 4634} 4635 4636/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4637static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4638{ 4639 struct qla_tgt_sess_op *op; 4640 struct qla_tgt_cmd *cmd; 4641 uint32_t key; 4642 int count = 0; 4643 unsigned long flags; 4644 4645 key = (((u32)s_id->b.domain << 16) | 4646 ((u32)s_id->b.area << 8) | 4647 ((u32)s_id->b.al_pa)); 4648 4649 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4650 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4651 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4652 4653 if (op_key == key) { 4654 op->aborted = true; 4655 count++; 4656 } 4657 } 4658 4659 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4660 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4661 4662 if (op_key == key) { 4663 op->aborted = true; 4664 count++; 4665 } 4666 } 4667 4668 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4669 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4670 4671 if (cmd_key == key) { 4672 cmd->aborted = 1; 4673 count++; 4674 } 4675 } 4676 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4677 4678 return count; 4679} 4680 4681static int qlt_handle_login(struct scsi_qla_host *vha, 4682 struct imm_ntfy_from_isp *iocb) 4683{ 4684 struct fc_port *sess = NULL, *conflict_sess = NULL; 4685 uint64_t wwn; 4686 port_id_t port_id; 4687 uint16_t loop_id, wd3_lo; 4688 int res = 0; 4689 struct qlt_plogi_ack_t *pla; 4690 unsigned long flags; 4691 4692 lockdep_assert_held(&vha->hw->hardware_lock); 4693 4694 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4695 4696 port_id.b.domain = iocb->u.isp24.port_id[2]; 4697 port_id.b.area = iocb->u.isp24.port_id[1]; 4698 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4699 port_id.b.rsvd_1 = 0; 4700 4701 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4702 4703 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4704 abort_cmds_for_s_id(vha, &port_id); 4705 4706 if (wwn) { 4707 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4708 sess = qlt_find_sess_invalidate_other(vha, wwn, 4709 port_id, loop_id, &conflict_sess); 4710 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4711 } else { 4712 ql_dbg(ql_dbg_disc, vha, 0xffff, 4713 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4714 __func__, __LINE__, loop_id, port_id.b24); 4715 qlt_send_term_imm_notif(vha, iocb, 1); 4716 goto out; 4717 } 4718 4719 if (IS_SW_RESV_ADDR(port_id)) { 4720 res = 1; 4721 goto out; 4722 } 4723 4724 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4725 if (!pla) { 4726 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4727 "%s %d %8phC Term INOT due to mem alloc fail", 4728 __func__, __LINE__, 4729 iocb->u.isp24.port_name); 4730 qlt_send_term_imm_notif(vha, iocb, 1); 4731 goto out; 4732 } 4733 4734 if (conflict_sess) { 4735 conflict_sess->login_gen++; 4736 qlt_plogi_ack_link(vha, pla, conflict_sess, 4737 QLT_PLOGI_LINK_CONFLICT); 4738 } 4739 4740 if (!sess) { 4741 pla->ref_count++; 4742 ql_dbg(ql_dbg_disc, vha, 0xffff, 4743 "%s %d %8phC post new sess\n", 4744 __func__, __LINE__, iocb->u.isp24.port_name); 4745 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4746 qla24xx_post_newsess_work(vha, &port_id, 4747 iocb->u.isp24.port_name, 4748 iocb->u.isp24.u.plogi.node_name, 4749 pla, 0); 4750 else 4751 qla24xx_post_newsess_work(vha, &port_id, 4752 iocb->u.isp24.port_name, NULL, 4753 pla, 0); 4754 4755 goto out; 4756 } 4757 4758 if (sess->disc_state == DSC_UPD_FCPORT) { 4759 u16 sec; 4760 4761 /* 4762 * Remote port registration is still going on from 4763 * previous login. Allow it to finish before we 4764 * accept the new login. 4765 */ 4766 sess->next_disc_state = DSC_DELETE_PEND; 4767 sec = jiffies_to_msecs(jiffies - 4768 sess->jiffies_at_registration) / 1000; 4769 if (sess->sec_since_registration < sec && sec && 4770 !(sec % 5)) { 4771 sess->sec_since_registration = sec; 4772 ql_dbg(ql_dbg_disc, vha, 0xffff, 4773 "%s %8phC - Slow Rport registration (%d Sec)\n", 4774 __func__, sess->port_name, sec); 4775 } 4776 4777 if (!conflict_sess) { 4778 list_del(&pla->list); 4779 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4780 } 4781 4782 qlt_send_term_imm_notif(vha, iocb, 1); 4783 goto out; 4784 } 4785 4786 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4787 sess->d_id = port_id; 4788 sess->login_gen++; 4789 4790 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4791 sess->fw_login_state = DSC_LS_PRLI_PEND; 4792 sess->local = 0; 4793 sess->loop_id = loop_id; 4794 sess->d_id = port_id; 4795 sess->fw_login_state = DSC_LS_PRLI_PEND; 4796 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4797 4798 if (wd3_lo & BIT_7) 4799 sess->conf_compl_supported = 1; 4800 4801 if ((wd3_lo & BIT_4) == 0) 4802 sess->port_type = FCT_INITIATOR; 4803 else 4804 sess->port_type = FCT_TARGET; 4805 4806 } else 4807 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4808 4809 4810 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4811 "%s %d %8phC DS %d\n", 4812 __func__, __LINE__, sess->port_name, sess->disc_state); 4813 4814 switch (sess->disc_state) { 4815 case DSC_DELETED: 4816 case DSC_LOGIN_PEND: 4817 qlt_plogi_ack_unref(vha, pla); 4818 break; 4819 4820 default: 4821 /* 4822 * Under normal circumstances we want to release nport handle 4823 * during LOGO process to avoid nport handle leaks inside FW. 4824 * The exception is when LOGO is done while another PLOGI with 4825 * the same nport handle is waiting as might be the case here. 4826 * Note: there is always a possibily of a race where session 4827 * deletion has already started for other reasons (e.g. ACL 4828 * removal) and now PLOGI arrives: 4829 * 1. if PLOGI arrived in FW after nport handle has been freed, 4830 * FW must have assigned this PLOGI a new/same handle and we 4831 * can proceed ACK'ing it as usual when session deletion 4832 * completes. 4833 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4834 * bit reached it, the handle has now been released. We'll 4835 * get an error when we ACK this PLOGI. Nothing will be sent 4836 * back to initiator. Initiator should eventually retry 4837 * PLOGI and situation will correct itself. 4838 */ 4839 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4840 (sess->d_id.b24 == port_id.b24)); 4841 4842 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4843 "%s %d %8phC post del sess\n", 4844 __func__, __LINE__, sess->port_name); 4845 4846 4847 qlt_schedule_sess_for_deletion(sess); 4848 break; 4849 } 4850out: 4851 return res; 4852} 4853 4854/* 4855 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4856 */ 4857static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4858 struct imm_ntfy_from_isp *iocb) 4859{ 4860 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4861 struct qla_hw_data *ha = vha->hw; 4862 struct fc_port *sess = NULL, *conflict_sess = NULL; 4863 uint64_t wwn; 4864 port_id_t port_id; 4865 uint16_t loop_id; 4866 uint16_t wd3_lo; 4867 int res = 0; 4868 unsigned long flags; 4869 4870 lockdep_assert_held(&ha->hardware_lock); 4871 4872 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4873 4874 port_id.b.domain = iocb->u.isp24.port_id[2]; 4875 port_id.b.area = iocb->u.isp24.port_id[1]; 4876 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4877 port_id.b.rsvd_1 = 0; 4878 4879 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4880 4881 ql_dbg(ql_dbg_disc, vha, 0xf026, 4882 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4883 vha->vp_idx, iocb->u.isp24.port_id[2], 4884 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4885 iocb->u.isp24.status_subcode, loop_id, 4886 iocb->u.isp24.port_name); 4887 4888 /* res = 1 means ack at the end of thread 4889 * res = 0 means ack async/later. 4890 */ 4891 switch (iocb->u.isp24.status_subcode) { 4892 case ELS_PLOGI: 4893 res = qlt_handle_login(vha, iocb); 4894 break; 4895 4896 case ELS_PRLI: 4897 if (N2N_TOPO(ha)) { 4898 sess = qla2x00_find_fcport_by_wwpn(vha, 4899 iocb->u.isp24.port_name, 1); 4900 4901 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4902 ql_dbg(ql_dbg_disc, vha, 0xffff, 4903 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4904 __func__, __LINE__, 4905 iocb->u.isp24.port_name); 4906 qlt_send_term_imm_notif(vha, iocb, 1); 4907 break; 4908 } 4909 4910 res = qlt_handle_login(vha, iocb); 4911 break; 4912 } 4913 4914 if (IS_SW_RESV_ADDR(port_id)) { 4915 res = 1; 4916 break; 4917 } 4918 4919 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4920 4921 if (wwn) { 4922 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4923 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4924 loop_id, &conflict_sess); 4925 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4926 } 4927 4928 if (conflict_sess) { 4929 switch (conflict_sess->disc_state) { 4930 case DSC_DELETED: 4931 case DSC_DELETE_PEND: 4932 break; 4933 default: 4934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4935 "PRLI with conflicting sess %p port %8phC\n", 4936 conflict_sess, conflict_sess->port_name); 4937 conflict_sess->fw_login_state = 4938 DSC_LS_PORT_UNAVAIL; 4939 qlt_send_term_imm_notif(vha, iocb, 1); 4940 res = 0; 4941 break; 4942 } 4943 } 4944 4945 if (sess != NULL) { 4946 bool delete = false; 4947 int sec; 4948 4949 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4950 switch (sess->fw_login_state) { 4951 case DSC_LS_PLOGI_PEND: 4952 case DSC_LS_PLOGI_COMP: 4953 case DSC_LS_PRLI_COMP: 4954 break; 4955 default: 4956 delete = true; 4957 break; 4958 } 4959 4960 switch (sess->disc_state) { 4961 case DSC_UPD_FCPORT: 4962 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4963 flags); 4964 4965 sec = jiffies_to_msecs(jiffies - 4966 sess->jiffies_at_registration)/1000; 4967 if (sess->sec_since_registration < sec && sec && 4968 !(sec % 5)) { 4969 sess->sec_since_registration = sec; 4970 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4971 "%s %8phC : Slow Rport registration(%d Sec)\n", 4972 __func__, sess->port_name, sec); 4973 } 4974 qlt_send_term_imm_notif(vha, iocb, 1); 4975 return 0; 4976 4977 case DSC_LOGIN_PEND: 4978 case DSC_GPDB: 4979 case DSC_LOGIN_COMPLETE: 4980 case DSC_ADISC: 4981 delete = false; 4982 break; 4983 default: 4984 break; 4985 } 4986 4987 if (delete) { 4988 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4989 flags); 4990 /* 4991 * Impatient initiator sent PRLI before last 4992 * PLOGI could finish. Will force him to re-try, 4993 * while last one finishes. 4994 */ 4995 ql_log(ql_log_warn, sess->vha, 0xf095, 4996 "sess %p PRLI received, before plogi ack.\n", 4997 sess); 4998 qlt_send_term_imm_notif(vha, iocb, 1); 4999 res = 0; 5000 break; 5001 } 5002 5003 /* 5004 * This shouldn't happen under normal circumstances, 5005 * since we have deleted the old session during PLOGI 5006 */ 5007 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5008 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5009 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5010 5011 sess->local = 0; 5012 sess->loop_id = loop_id; 5013 sess->d_id = port_id; 5014 sess->fw_login_state = DSC_LS_PRLI_PEND; 5015 5016 if (wd3_lo & BIT_7) 5017 sess->conf_compl_supported = 1; 5018 5019 if ((wd3_lo & BIT_4) == 0) 5020 sess->port_type = FCT_INITIATOR; 5021 else 5022 sess->port_type = FCT_TARGET; 5023 5024 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5025 } 5026 res = 1; /* send notify ack */ 5027 5028 /* Make session global (not used in fabric mode) */ 5029 if (ha->current_topology != ISP_CFG_F) { 5030 if (sess) { 5031 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5032 "%s %d %8phC post nack\n", 5033 __func__, __LINE__, sess->port_name); 5034 qla24xx_post_nack_work(vha, sess, iocb, 5035 SRB_NACK_PRLI); 5036 res = 0; 5037 } else { 5038 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5039 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5040 qla2xxx_wake_dpc(vha); 5041 } 5042 } else { 5043 if (sess) { 5044 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5045 "%s %d %8phC post nack\n", 5046 __func__, __LINE__, sess->port_name); 5047 qla24xx_post_nack_work(vha, sess, iocb, 5048 SRB_NACK_PRLI); 5049 res = 0; 5050 } 5051 } 5052 break; 5053 5054 case ELS_TPRLO: 5055 if (le16_to_cpu(iocb->u.isp24.flags) & 5056 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5057 loop_id = 0xFFFF; 5058 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5059 res = 1; 5060 break; 5061 } 5062 fallthrough; 5063 case ELS_LOGO: 5064 case ELS_PRLO: 5065 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5066 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5067 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5068 5069 if (sess) { 5070 sess->login_gen++; 5071 sess->fw_login_state = DSC_LS_LOGO_PEND; 5072 sess->logo_ack_needed = 1; 5073 memcpy(sess->iocb, iocb, IOCB_SIZE); 5074 } 5075 5076 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5077 5078 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5079 "%s: logo %llx res %d sess %p ", 5080 __func__, wwn, res, sess); 5081 if (res == 0) { 5082 /* 5083 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5084 * for LOGO_ACK & sess delete 5085 */ 5086 BUG_ON(!sess); 5087 res = 0; 5088 } else { 5089 /* cmd did not go to upper layer. */ 5090 if (sess) { 5091 qlt_schedule_sess_for_deletion(sess); 5092 res = 0; 5093 } 5094 /* else logo will be ack */ 5095 } 5096 break; 5097 case ELS_PDISC: 5098 case ELS_ADISC: 5099 { 5100 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5101 5102 if (tgt->link_reinit_iocb_pending) { 5103 qlt_send_notify_ack(ha->base_qpair, 5104 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5105 tgt->link_reinit_iocb_pending = 0; 5106 } 5107 5108 sess = qla2x00_find_fcport_by_wwpn(vha, 5109 iocb->u.isp24.port_name, 1); 5110 if (sess) { 5111 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5112 "sess %p lid %d|%d DS %d LS %d\n", 5113 sess, sess->loop_id, loop_id, 5114 sess->disc_state, sess->fw_login_state); 5115 } 5116 5117 res = 1; /* send notify ack */ 5118 break; 5119 } 5120 5121 case ELS_FLOGI: /* should never happen */ 5122 default: 5123 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5124 "qla_target(%d): Unsupported ELS command %x " 5125 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5126 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5127 break; 5128 } 5129 5130 ql_dbg(ql_dbg_disc, vha, 0xf026, 5131 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5132 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5133 5134 return res; 5135} 5136 5137/* 5138 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5139 */ 5140static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5141 struct imm_ntfy_from_isp *iocb) 5142{ 5143 struct qla_hw_data *ha = vha->hw; 5144 uint32_t add_flags = 0; 5145 int send_notify_ack = 1; 5146 uint16_t status; 5147 5148 lockdep_assert_held(&ha->hardware_lock); 5149 5150 status = le16_to_cpu(iocb->u.isp2x.status); 5151 switch (status) { 5152 case IMM_NTFY_LIP_RESET: 5153 { 5154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5155 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5156 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5157 iocb->u.isp24.status_subcode); 5158 5159 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5160 send_notify_ack = 0; 5161 break; 5162 } 5163 5164 case IMM_NTFY_LIP_LINK_REINIT: 5165 { 5166 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5167 5168 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5169 "qla_target(%d): LINK REINIT (loop %#x, " 5170 "subcode %x)\n", vha->vp_idx, 5171 le16_to_cpu(iocb->u.isp24.nport_handle), 5172 iocb->u.isp24.status_subcode); 5173 if (tgt->link_reinit_iocb_pending) { 5174 qlt_send_notify_ack(ha->base_qpair, 5175 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5176 } 5177 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5178 tgt->link_reinit_iocb_pending = 1; 5179 /* 5180 * QLogic requires to wait after LINK REINIT for possible 5181 * PDISC or ADISC ELS commands 5182 */ 5183 send_notify_ack = 0; 5184 break; 5185 } 5186 5187 case IMM_NTFY_PORT_LOGOUT: 5188 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5189 "qla_target(%d): Port logout (loop " 5190 "%#x, subcode %x)\n", vha->vp_idx, 5191 le16_to_cpu(iocb->u.isp24.nport_handle), 5192 iocb->u.isp24.status_subcode); 5193 5194 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5195 send_notify_ack = 0; 5196 /* The sessions will be cleared in the callback, if needed */ 5197 break; 5198 5199 case IMM_NTFY_GLBL_TPRLO: 5200 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5201 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5202 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5203 send_notify_ack = 0; 5204 /* The sessions will be cleared in the callback, if needed */ 5205 break; 5206 5207 case IMM_NTFY_PORT_CONFIG: 5208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5209 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5210 status); 5211 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5212 send_notify_ack = 0; 5213 /* The sessions will be cleared in the callback, if needed */ 5214 break; 5215 5216 case IMM_NTFY_GLBL_LOGO: 5217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5218 "qla_target(%d): Link failure detected\n", 5219 vha->vp_idx); 5220 /* I_T nexus loss */ 5221 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5222 send_notify_ack = 0; 5223 break; 5224 5225 case IMM_NTFY_IOCB_OVERFLOW: 5226 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5227 "qla_target(%d): Cannot provide requested " 5228 "capability (IOCB overflowed the immediate notify " 5229 "resource count)\n", vha->vp_idx); 5230 break; 5231 5232 case IMM_NTFY_ABORT_TASK: 5233 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5234 "qla_target(%d): Abort Task (S %08x I %#x -> " 5235 "L %#x)\n", vha->vp_idx, 5236 le16_to_cpu(iocb->u.isp2x.seq_id), 5237 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5238 le16_to_cpu(iocb->u.isp2x.lun)); 5239 if (qlt_abort_task(vha, iocb) == 0) 5240 send_notify_ack = 0; 5241 break; 5242 5243 case IMM_NTFY_RESOURCE: 5244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5245 "qla_target(%d): Out of resources, host %ld\n", 5246 vha->vp_idx, vha->host_no); 5247 break; 5248 5249 case IMM_NTFY_MSG_RX: 5250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5251 "qla_target(%d): Immediate notify task %x\n", 5252 vha->vp_idx, iocb->u.isp2x.task_flags); 5253 break; 5254 5255 case IMM_NTFY_ELS: 5256 if (qlt_24xx_handle_els(vha, iocb) == 0) 5257 send_notify_ack = 0; 5258 break; 5259 default: 5260 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5261 "qla_target(%d): Received unknown immediate " 5262 "notify status %x\n", vha->vp_idx, status); 5263 break; 5264 } 5265 5266 if (send_notify_ack) 5267 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5268 0, 0); 5269} 5270 5271/* 5272 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5273 * This function sends busy to ISP 2xxx or 24xx. 5274 */ 5275static int __qlt_send_busy(struct qla_qpair *qpair, 5276 struct atio_from_isp *atio, uint16_t status) 5277{ 5278 struct scsi_qla_host *vha = qpair->vha; 5279 struct ctio7_to_24xx *ctio24; 5280 struct qla_hw_data *ha = vha->hw; 5281 request_t *pkt; 5282 struct fc_port *sess = NULL; 5283 unsigned long flags; 5284 u16 temp; 5285 port_id_t id; 5286 5287 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5288 5289 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5290 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5291 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5292 if (!sess) { 5293 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5294 return 0; 5295 } 5296 /* Sending marker isn't necessary, since we called from ISR */ 5297 5298 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5299 if (!pkt) { 5300 ql_dbg(ql_dbg_io, vha, 0x3063, 5301 "qla_target(%d): %s failed: unable to allocate " 5302 "request packet", vha->vp_idx, __func__); 5303 return -ENOMEM; 5304 } 5305 5306 qpair->tgt_counters.num_q_full_sent++; 5307 pkt->entry_count = 1; 5308 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5309 5310 ctio24 = (struct ctio7_to_24xx *)pkt; 5311 ctio24->entry_type = CTIO_TYPE7; 5312 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5313 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5314 ctio24->vp_index = vha->vp_idx; 5315 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5316 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5317 temp = (atio->u.isp24.attr << 9) | 5318 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5319 CTIO7_FLAGS_DONT_RET_CTIO; 5320 ctio24->u.status1.flags = cpu_to_le16(temp); 5321 /* 5322 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5323 * if the explicit conformation is used. 5324 */ 5325 ctio24->u.status1.ox_id = 5326 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5327 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5328 5329 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5330 5331 if (ctio24->u.status1.residual != 0) 5332 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5333 5334 /* Memory Barrier */ 5335 wmb(); 5336 if (qpair->reqq_start_iocbs) 5337 qpair->reqq_start_iocbs(qpair); 5338 else 5339 qla2x00_start_iocbs(vha, qpair->req); 5340 return 0; 5341} 5342 5343/* 5344 * This routine is used to allocate a command for either a QFull condition 5345 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5346 * out previously. 5347 */ 5348static void 5349qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5350 struct atio_from_isp *atio, uint16_t status, int qfull) 5351{ 5352 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5353 struct qla_hw_data *ha = vha->hw; 5354 struct fc_port *sess; 5355 struct qla_tgt_cmd *cmd; 5356 unsigned long flags; 5357 5358 if (unlikely(tgt->tgt_stop)) { 5359 ql_dbg(ql_dbg_io, vha, 0x300a, 5360 "New command while device %p is shutting down\n", tgt); 5361 return; 5362 } 5363 5364 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5365 vha->hw->tgt.num_qfull_cmds_dropped++; 5366 if (vha->hw->tgt.num_qfull_cmds_dropped > 5367 vha->qla_stats.stat_max_qfull_cmds_dropped) 5368 vha->qla_stats.stat_max_qfull_cmds_dropped = 5369 vha->hw->tgt.num_qfull_cmds_dropped; 5370 5371 ql_dbg(ql_dbg_io, vha, 0x3068, 5372 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5373 vha->vp_idx, __func__, 5374 vha->hw->tgt.num_qfull_cmds_dropped); 5375 5376 qlt_chk_exch_leak_thresh_hold(vha); 5377 return; 5378 } 5379 5380 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5381 (vha, atio->u.isp24.fcp_hdr.s_id); 5382 if (!sess) 5383 return; 5384 5385 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5386 if (!cmd) { 5387 ql_dbg(ql_dbg_io, vha, 0x3009, 5388 "qla_target(%d): %s: Allocation of cmd failed\n", 5389 vha->vp_idx, __func__); 5390 5391 vha->hw->tgt.num_qfull_cmds_dropped++; 5392 if (vha->hw->tgt.num_qfull_cmds_dropped > 5393 vha->qla_stats.stat_max_qfull_cmds_dropped) 5394 vha->qla_stats.stat_max_qfull_cmds_dropped = 5395 vha->hw->tgt.num_qfull_cmds_dropped; 5396 5397 qlt_chk_exch_leak_thresh_hold(vha); 5398 return; 5399 } 5400 5401 qlt_incr_num_pend_cmds(vha); 5402 INIT_LIST_HEAD(&cmd->cmd_list); 5403 memcpy(&cmd->atio, atio, sizeof(*atio)); 5404 5405 cmd->tgt = vha->vha_tgt.qla_tgt; 5406 cmd->vha = vha; 5407 cmd->reset_count = ha->base_qpair->chip_reset; 5408 cmd->q_full = 1; 5409 cmd->qpair = ha->base_qpair; 5410 5411 if (qfull) { 5412 cmd->q_full = 1; 5413 /* NOTE: borrowing the state field to carry the status */ 5414 cmd->state = status; 5415 } else 5416 cmd->term_exchg = 1; 5417 5418 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5419 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5420 5421 vha->hw->tgt.num_qfull_cmds_alloc++; 5422 if (vha->hw->tgt.num_qfull_cmds_alloc > 5423 vha->qla_stats.stat_max_qfull_cmds_alloc) 5424 vha->qla_stats.stat_max_qfull_cmds_alloc = 5425 vha->hw->tgt.num_qfull_cmds_alloc; 5426 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5427} 5428 5429int 5430qlt_free_qfull_cmds(struct qla_qpair *qpair) 5431{ 5432 struct scsi_qla_host *vha = qpair->vha; 5433 struct qla_hw_data *ha = vha->hw; 5434 unsigned long flags; 5435 struct qla_tgt_cmd *cmd, *tcmd; 5436 struct list_head free_list, q_full_list; 5437 int rc = 0; 5438 5439 if (list_empty(&ha->tgt.q_full_list)) 5440 return 0; 5441 5442 INIT_LIST_HEAD(&free_list); 5443 INIT_LIST_HEAD(&q_full_list); 5444 5445 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5446 if (list_empty(&ha->tgt.q_full_list)) { 5447 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5448 return 0; 5449 } 5450 5451 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5452 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5453 5454 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5455 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5456 if (cmd->q_full) 5457 /* cmd->state is a borrowed field to hold status */ 5458 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5459 else if (cmd->term_exchg) 5460 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5461 5462 if (rc == -ENOMEM) 5463 break; 5464 5465 if (cmd->q_full) 5466 ql_dbg(ql_dbg_io, vha, 0x3006, 5467 "%s: busy sent for ox_id[%04x]\n", __func__, 5468 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5469 else if (cmd->term_exchg) 5470 ql_dbg(ql_dbg_io, vha, 0x3007, 5471 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5472 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5473 else 5474 ql_dbg(ql_dbg_io, vha, 0x3008, 5475 "%s: Unexpected cmd in QFull list %p\n", __func__, 5476 cmd); 5477 5478 list_del(&cmd->cmd_list); 5479 list_add_tail(&cmd->cmd_list, &free_list); 5480 5481 /* piggy back on hardware_lock for protection */ 5482 vha->hw->tgt.num_qfull_cmds_alloc--; 5483 } 5484 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5485 5486 cmd = NULL; 5487 5488 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5489 list_del(&cmd->cmd_list); 5490 /* This cmd was never sent to TCM. There is no need 5491 * to schedule free or call free_cmd 5492 */ 5493 qlt_free_cmd(cmd); 5494 } 5495 5496 if (!list_empty(&q_full_list)) { 5497 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5498 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5499 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5500 } 5501 5502 return rc; 5503} 5504 5505static void 5506qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5507 uint16_t status) 5508{ 5509 int rc = 0; 5510 struct scsi_qla_host *vha = qpair->vha; 5511 5512 rc = __qlt_send_busy(qpair, atio, status); 5513 if (rc == -ENOMEM) 5514 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5515} 5516 5517static int 5518qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5519 struct atio_from_isp *atio, uint8_t ha_locked) 5520{ 5521 struct qla_hw_data *ha = vha->hw; 5522 unsigned long flags; 5523 5524 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5525 return 0; 5526 5527 if (!ha_locked) 5528 spin_lock_irqsave(&ha->hardware_lock, flags); 5529 qlt_send_busy(qpair, atio, qla_sam_status); 5530 if (!ha_locked) 5531 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5532 5533 return 1; 5534} 5535 5536/* ha->hardware_lock supposed to be held on entry */ 5537/* called via callback from qla2xxx */ 5538static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5539 struct atio_from_isp *atio, uint8_t ha_locked) 5540{ 5541 struct qla_hw_data *ha = vha->hw; 5542 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5543 int rc; 5544 unsigned long flags = 0; 5545 5546 if (unlikely(tgt == NULL)) { 5547 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5548 "ATIO pkt, but no tgt (ha %p)", ha); 5549 return; 5550 } 5551 /* 5552 * In tgt_stop mode we also should allow all requests to pass. 5553 * Otherwise, some commands can stuck. 5554 */ 5555 5556 tgt->atio_irq_cmd_count++; 5557 5558 switch (atio->u.raw.entry_type) { 5559 case ATIO_TYPE7: 5560 if (unlikely(atio->u.isp24.exchange_addr == 5561 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5562 ql_dbg(ql_dbg_io, vha, 0x3065, 5563 "qla_target(%d): ATIO_TYPE7 " 5564 "received with UNKNOWN exchange address, " 5565 "sending QUEUE_FULL\n", vha->vp_idx); 5566 if (!ha_locked) 5567 spin_lock_irqsave(&ha->hardware_lock, flags); 5568 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5569 if (!ha_locked) 5570 spin_unlock_irqrestore(&ha->hardware_lock, 5571 flags); 5572 break; 5573 } 5574 5575 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5576 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5577 atio, ha_locked); 5578 if (rc != 0) { 5579 tgt->atio_irq_cmd_count--; 5580 return; 5581 } 5582 rc = qlt_handle_cmd_for_atio(vha, atio); 5583 } else { 5584 rc = qlt_handle_task_mgmt(vha, atio); 5585 } 5586 if (unlikely(rc != 0)) { 5587 if (!ha_locked) 5588 spin_lock_irqsave(&ha->hardware_lock, flags); 5589 switch (rc) { 5590 case -ENODEV: 5591 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5592 "qla_target: Unable to send command to target\n"); 5593 break; 5594 case -EBADF: 5595 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5596 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5597 qlt_send_term_exchange(ha->base_qpair, NULL, 5598 atio, 1, 0); 5599 break; 5600 case -EBUSY: 5601 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5602 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5603 vha->vp_idx); 5604 qlt_send_busy(ha->base_qpair, atio, 5605 tc_sam_status); 5606 break; 5607 default: 5608 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5609 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5610 vha->vp_idx); 5611 qlt_send_busy(ha->base_qpair, atio, 5612 qla_sam_status); 5613 break; 5614 } 5615 if (!ha_locked) 5616 spin_unlock_irqrestore(&ha->hardware_lock, 5617 flags); 5618 } 5619 break; 5620 5621 case IMMED_NOTIFY_TYPE: 5622 { 5623 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5624 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5625 "qla_target(%d): Received ATIO packet %x " 5626 "with error status %x\n", vha->vp_idx, 5627 atio->u.raw.entry_type, 5628 atio->u.isp2x.entry_status); 5629 break; 5630 } 5631 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5632 5633 if (!ha_locked) 5634 spin_lock_irqsave(&ha->hardware_lock, flags); 5635 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5636 if (!ha_locked) 5637 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5638 break; 5639 } 5640 5641 default: 5642 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5643 "qla_target(%d): Received unknown ATIO atio " 5644 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5645 break; 5646 } 5647 5648 tgt->atio_irq_cmd_count--; 5649} 5650 5651/* 5652 * qpair lock is assume to be held 5653 * rc = 0 : send terminate & abts respond 5654 * rc != 0: do not send term & abts respond 5655 */ 5656static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5657 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5658{ 5659 struct qla_hw_data *ha = vha->hw; 5660 int rc = 0; 5661 5662 /* 5663 * Detect unresolved exchange. If the same ABTS is unable 5664 * to terminate an existing command and the same ABTS loops 5665 * between FW & Driver, then force FW dump. Under 1 jiff, 5666 * we should see multiple loops. 5667 */ 5668 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5669 qpair->retry_term_jiff == jiffies) { 5670 /* found existing exchange */ 5671 qpair->retry_term_cnt++; 5672 if (qpair->retry_term_cnt >= 5) { 5673 rc = -EIO; 5674 qpair->retry_term_cnt = 0; 5675 ql_log(ql_log_warn, vha, 0xffff, 5676 "Unable to send ABTS Respond. Dumping firmware.\n"); 5677 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5678 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5679 5680 if (qpair == ha->base_qpair) 5681 ha->isp_ops->fw_dump(vha); 5682 else 5683 qla2xxx_dump_fw(vha); 5684 5685 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5686 qla2xxx_wake_dpc(vha); 5687 } 5688 } else if (qpair->retry_term_jiff != jiffies) { 5689 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5690 qpair->retry_term_cnt = 0; 5691 qpair->retry_term_jiff = jiffies; 5692 } 5693 5694 return rc; 5695} 5696 5697 5698static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5699 struct rsp_que *rsp, response_t *pkt) 5700{ 5701 struct abts_resp_from_24xx_fw *entry = 5702 (struct abts_resp_from_24xx_fw *)pkt; 5703 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5704 struct qla_tgt_mgmt_cmd *mcmd; 5705 struct qla_hw_data *ha = vha->hw; 5706 5707 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5708 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5709 ql_dbg(ql_dbg_async, vha, 0xe064, 5710 "qla_target(%d): ABTS Comp without mcmd\n", 5711 vha->vp_idx); 5712 return; 5713 } 5714 5715 if (mcmd) 5716 vha = mcmd->vha; 5717 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5718 5719 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5720 "ABTS_RESP_24XX: compl_status %x\n", 5721 entry->compl_status); 5722 5723 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5724 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5725 le32_to_cpu(entry->error_subcode2) == 0) { 5726 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5727 ha->tgt.tgt_ops->free_mcmd(mcmd); 5728 return; 5729 } 5730 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5731 pkt, mcmd); 5732 } else { 5733 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5734 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5735 vha->vp_idx, entry->compl_status, 5736 entry->error_subcode1, 5737 entry->error_subcode2); 5738 ha->tgt.tgt_ops->free_mcmd(mcmd); 5739 } 5740 } else if (mcmd) { 5741 ha->tgt.tgt_ops->free_mcmd(mcmd); 5742 } 5743} 5744 5745/* ha->hardware_lock supposed to be held on entry */ 5746/* called via callback from qla2xxx */ 5747static void qlt_response_pkt(struct scsi_qla_host *vha, 5748 struct rsp_que *rsp, response_t *pkt) 5749{ 5750 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5751 5752 if (unlikely(tgt == NULL)) { 5753 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5754 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5755 vha->vp_idx, pkt->entry_type, vha->hw); 5756 return; 5757 } 5758 5759 /* 5760 * In tgt_stop mode we also should allow all requests to pass. 5761 * Otherwise, some commands can stuck. 5762 */ 5763 5764 switch (pkt->entry_type) { 5765 case CTIO_CRC2: 5766 case CTIO_TYPE7: 5767 { 5768 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5769 5770 qlt_do_ctio_completion(vha, rsp, entry->handle, 5771 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5772 entry); 5773 break; 5774 } 5775 5776 case ACCEPT_TGT_IO_TYPE: 5777 { 5778 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5779 int rc; 5780 5781 if (atio->u.isp2x.status != 5782 cpu_to_le16(ATIO_CDB_VALID)) { 5783 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5784 "qla_target(%d): ATIO with error " 5785 "status %x received\n", vha->vp_idx, 5786 le16_to_cpu(atio->u.isp2x.status)); 5787 break; 5788 } 5789 5790 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5791 if (rc != 0) 5792 return; 5793 5794 rc = qlt_handle_cmd_for_atio(vha, atio); 5795 if (unlikely(rc != 0)) { 5796 switch (rc) { 5797 case -ENODEV: 5798 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5799 "qla_target: Unable to send command to target\n"); 5800 break; 5801 case -EBADF: 5802 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5803 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5804 qlt_send_term_exchange(rsp->qpair, NULL, 5805 atio, 1, 0); 5806 break; 5807 case -EBUSY: 5808 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5809 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5810 vha->vp_idx); 5811 qlt_send_busy(rsp->qpair, atio, 5812 tc_sam_status); 5813 break; 5814 default: 5815 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5816 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5817 vha->vp_idx); 5818 qlt_send_busy(rsp->qpair, atio, 5819 qla_sam_status); 5820 break; 5821 } 5822 } 5823 } 5824 break; 5825 5826 case CONTINUE_TGT_IO_TYPE: 5827 { 5828 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5829 5830 qlt_do_ctio_completion(vha, rsp, entry->handle, 5831 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5832 entry); 5833 break; 5834 } 5835 5836 case CTIO_A64_TYPE: 5837 { 5838 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5839 5840 qlt_do_ctio_completion(vha, rsp, entry->handle, 5841 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5842 entry); 5843 break; 5844 } 5845 5846 case IMMED_NOTIFY_TYPE: 5847 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5848 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5849 break; 5850 5851 case NOTIFY_ACK_TYPE: 5852 if (tgt->notify_ack_expected > 0) { 5853 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5854 5855 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5856 "NOTIFY_ACK seq %08x status %x\n", 5857 le16_to_cpu(entry->u.isp2x.seq_id), 5858 le16_to_cpu(entry->u.isp2x.status)); 5859 tgt->notify_ack_expected--; 5860 if (entry->u.isp2x.status != 5861 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5862 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5863 "qla_target(%d): NOTIFY_ACK " 5864 "failed %x\n", vha->vp_idx, 5865 le16_to_cpu(entry->u.isp2x.status)); 5866 } 5867 } else { 5868 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5869 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5870 vha->vp_idx); 5871 } 5872 break; 5873 5874 case ABTS_RECV_24XX: 5875 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5876 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5877 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5878 break; 5879 5880 case ABTS_RESP_24XX: 5881 if (tgt->abts_resp_expected > 0) { 5882 qlt_handle_abts_completion(vha, rsp, pkt); 5883 } else { 5884 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5885 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5886 "received\n", vha->vp_idx); 5887 } 5888 break; 5889 5890 default: 5891 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5892 "qla_target(%d): Received unknown response pkt " 5893 "type %x\n", vha->vp_idx, pkt->entry_type); 5894 break; 5895 } 5896 5897} 5898 5899/* 5900 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5901 */ 5902void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5903 uint16_t *mailbox) 5904{ 5905 struct qla_hw_data *ha = vha->hw; 5906 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5907 int login_code; 5908 5909 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5910 return; 5911 5912 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5913 IS_QLA2100(ha)) 5914 return; 5915 /* 5916 * In tgt_stop mode we also should allow all requests to pass. 5917 * Otherwise, some commands can stuck. 5918 */ 5919 5920 5921 switch (code) { 5922 case MBA_RESET: /* Reset */ 5923 case MBA_SYSTEM_ERR: /* System Error */ 5924 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5925 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5927 "qla_target(%d): System error async event %#x " 5928 "occurred", vha->vp_idx, code); 5929 break; 5930 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5931 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5932 break; 5933 5934 case MBA_LOOP_UP: 5935 { 5936 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5937 "qla_target(%d): Async LOOP_UP occurred " 5938 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5939 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5940 if (tgt->link_reinit_iocb_pending) { 5941 qlt_send_notify_ack(ha->base_qpair, 5942 &tgt->link_reinit_iocb, 5943 0, 0, 0, 0, 0, 0); 5944 tgt->link_reinit_iocb_pending = 0; 5945 } 5946 break; 5947 } 5948 5949 case MBA_LIP_OCCURRED: 5950 case MBA_LOOP_DOWN: 5951 case MBA_LIP_RESET: 5952 case MBA_RSCN_UPDATE: 5953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5954 "qla_target(%d): Async event %#x occurred " 5955 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5956 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5957 break; 5958 5959 case MBA_REJECTED_FCP_CMD: 5960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5961 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5962 vha->vp_idx, 5963 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5964 5965 if (mailbox[3] == 1) { 5966 /* exchange starvation. */ 5967 vha->hw->exch_starvation++; 5968 if (vha->hw->exch_starvation > 5) { 5969 ql_log(ql_log_warn, vha, 0xd03a, 5970 "Exchange starvation-. Resetting RISC\n"); 5971 5972 vha->hw->exch_starvation = 0; 5973 if (IS_P3P_TYPE(vha->hw)) 5974 set_bit(FCOE_CTX_RESET_NEEDED, 5975 &vha->dpc_flags); 5976 else 5977 set_bit(ISP_ABORT_NEEDED, 5978 &vha->dpc_flags); 5979 qla2xxx_wake_dpc(vha); 5980 } 5981 } 5982 break; 5983 5984 case MBA_PORT_UPDATE: 5985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5986 "qla_target(%d): Port update async event %#x " 5987 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5988 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5989 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5990 5991 login_code = mailbox[2]; 5992 if (login_code == 0x4) { 5993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5994 "Async MB 2: Got PLOGI Complete\n"); 5995 vha->hw->exch_starvation = 0; 5996 } else if (login_code == 0x7) 5997 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5998 "Async MB 2: Port Logged Out\n"); 5999 break; 6000 default: 6001 break; 6002 } 6003 6004} 6005 6006static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6007 uint16_t loop_id) 6008{ 6009 fc_port_t *fcport, *tfcp, *del; 6010 int rc; 6011 unsigned long flags; 6012 u8 newfcport = 0; 6013 6014 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6015 if (!fcport) { 6016 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6017 "qla_target(%d): Allocation of tmp FC port failed", 6018 vha->vp_idx); 6019 return NULL; 6020 } 6021 6022 fcport->loop_id = loop_id; 6023 6024 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6025 if (rc != QLA_SUCCESS) { 6026 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6027 "qla_target(%d): Failed to retrieve fcport " 6028 "information -- get_port_database() returned %x " 6029 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6030 kfree(fcport); 6031 return NULL; 6032 } 6033 6034 del = NULL; 6035 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6036 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6037 6038 if (tfcp) { 6039 tfcp->d_id = fcport->d_id; 6040 tfcp->port_type = fcport->port_type; 6041 tfcp->supported_classes = fcport->supported_classes; 6042 tfcp->flags |= fcport->flags; 6043 tfcp->scan_state = QLA_FCPORT_FOUND; 6044 6045 del = fcport; 6046 fcport = tfcp; 6047 } else { 6048 if (vha->hw->current_topology == ISP_CFG_F) 6049 fcport->flags |= FCF_FABRIC_DEVICE; 6050 6051 list_add_tail(&fcport->list, &vha->vp_fcports); 6052 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6053 vha->fcport_count++; 6054 fcport->login_gen++; 6055 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6056 fcport->login_succ = 1; 6057 newfcport = 1; 6058 } 6059 6060 fcport->deleted = 0; 6061 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6062 6063 switch (vha->host->active_mode) { 6064 case MODE_INITIATOR: 6065 case MODE_DUAL: 6066 if (newfcport) { 6067 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6068 qla24xx_sched_upd_fcport(fcport); 6069 } else { 6070 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6071 "%s %d %8phC post gpsc fcp_cnt %d\n", 6072 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6073 qla24xx_post_gpsc_work(vha, fcport); 6074 } 6075 } 6076 break; 6077 6078 case MODE_TARGET: 6079 default: 6080 break; 6081 } 6082 if (del) 6083 qla2x00_free_fcport(del); 6084 6085 return fcport; 6086} 6087 6088/* Must be called under tgt_mutex */ 6089static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6090 be_id_t s_id) 6091{ 6092 struct fc_port *sess = NULL; 6093 fc_port_t *fcport = NULL; 6094 int rc, global_resets; 6095 uint16_t loop_id = 0; 6096 6097 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6098 /* 6099 * This is Domain Controller, so it should be 6100 * OK to drop SCSI commands from it. 6101 */ 6102 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6103 "Unable to find initiator with S_ID %x:%x:%x", 6104 s_id.domain, s_id.area, s_id.al_pa); 6105 return NULL; 6106 } 6107 6108 mutex_lock(&vha->vha_tgt.tgt_mutex); 6109 6110retry: 6111 global_resets = 6112 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6113 6114 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6115 if (rc != 0) { 6116 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6117 6118 ql_log(ql_log_info, vha, 0xf071, 6119 "qla_target(%d): Unable to find " 6120 "initiator with S_ID %x:%x:%x", 6121 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6122 6123 if (rc == -ENOENT) { 6124 qlt_port_logo_t logo; 6125 6126 logo.id = be_to_port_id(s_id); 6127 logo.cmd_count = 1; 6128 qlt_send_first_logo(vha, &logo); 6129 } 6130 6131 return NULL; 6132 } 6133 6134 fcport = qlt_get_port_database(vha, loop_id); 6135 if (!fcport) { 6136 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6137 return NULL; 6138 } 6139 6140 if (global_resets != 6141 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6143 "qla_target(%d): global reset during session discovery " 6144 "(counter was %d, new %d), retrying", vha->vp_idx, 6145 global_resets, 6146 atomic_read(&vha->vha_tgt. 6147 qla_tgt->tgt_global_resets_count)); 6148 goto retry; 6149 } 6150 6151 sess = qlt_create_sess(vha, fcport, true); 6152 6153 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6154 6155 return sess; 6156} 6157 6158static void qlt_abort_work(struct qla_tgt *tgt, 6159 struct qla_tgt_sess_work_param *prm) 6160{ 6161 struct scsi_qla_host *vha = tgt->vha; 6162 struct qla_hw_data *ha = vha->hw; 6163 struct fc_port *sess = NULL; 6164 unsigned long flags = 0, flags2 = 0; 6165 be_id_t s_id; 6166 int rc; 6167 6168 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6169 6170 if (tgt->tgt_stop) 6171 goto out_term2; 6172 6173 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6174 6175 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6176 if (!sess) { 6177 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6178 6179 sess = qlt_make_local_sess(vha, s_id); 6180 /* sess has got an extra creation ref */ 6181 6182 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6183 if (!sess) 6184 goto out_term2; 6185 } else { 6186 if (sess->deleted) { 6187 sess = NULL; 6188 goto out_term2; 6189 } 6190 6191 if (!kref_get_unless_zero(&sess->sess_kref)) { 6192 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6193 "%s: kref_get fail %8phC \n", 6194 __func__, sess->port_name); 6195 sess = NULL; 6196 goto out_term2; 6197 } 6198 } 6199 6200 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6201 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6202 6203 ha->tgt.tgt_ops->put_sess(sess); 6204 6205 if (rc != 0) 6206 goto out_term; 6207 return; 6208 6209out_term2: 6210 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6211 6212out_term: 6213 spin_lock_irqsave(&ha->hardware_lock, flags); 6214 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6215 FCP_TMF_REJECTED, false); 6216 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6217} 6218 6219static void qlt_tmr_work(struct qla_tgt *tgt, 6220 struct qla_tgt_sess_work_param *prm) 6221{ 6222 struct atio_from_isp *a = &prm->tm_iocb2; 6223 struct scsi_qla_host *vha = tgt->vha; 6224 struct qla_hw_data *ha = vha->hw; 6225 struct fc_port *sess; 6226 unsigned long flags; 6227 be_id_t s_id; 6228 int rc; 6229 u64 unpacked_lun; 6230 int fn; 6231 void *iocb; 6232 6233 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6234 6235 if (tgt->tgt_stop) 6236 goto out_term2; 6237 6238 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6239 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6240 if (!sess) { 6241 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6242 6243 sess = qlt_make_local_sess(vha, s_id); 6244 /* sess has got an extra creation ref */ 6245 6246 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6247 if (!sess) 6248 goto out_term2; 6249 } else { 6250 if (sess->deleted) { 6251 goto out_term2; 6252 } 6253 6254 if (!kref_get_unless_zero(&sess->sess_kref)) { 6255 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6256 "%s: kref_get fail %8phC\n", 6257 __func__, sess->port_name); 6258 goto out_term2; 6259 } 6260 } 6261 6262 iocb = a; 6263 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6264 unpacked_lun = 6265 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6266 6267 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6268 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6269 6270 ha->tgt.tgt_ops->put_sess(sess); 6271 6272 if (rc != 0) 6273 goto out_term; 6274 return; 6275 6276out_term2: 6277 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6278out_term: 6279 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6280} 6281 6282static void qlt_sess_work_fn(struct work_struct *work) 6283{ 6284 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6285 struct scsi_qla_host *vha = tgt->vha; 6286 unsigned long flags; 6287 6288 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6289 6290 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6291 while (!list_empty(&tgt->sess_works_list)) { 6292 struct qla_tgt_sess_work_param *prm = list_entry( 6293 tgt->sess_works_list.next, typeof(*prm), 6294 sess_works_list_entry); 6295 6296 /* 6297 * This work can be scheduled on several CPUs at time, so we 6298 * must delete the entry to eliminate double processing 6299 */ 6300 list_del(&prm->sess_works_list_entry); 6301 6302 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6303 6304 switch (prm->type) { 6305 case QLA_TGT_SESS_WORK_ABORT: 6306 qlt_abort_work(tgt, prm); 6307 break; 6308 case QLA_TGT_SESS_WORK_TM: 6309 qlt_tmr_work(tgt, prm); 6310 break; 6311 default: 6312 BUG_ON(1); 6313 break; 6314 } 6315 6316 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6317 6318 kfree(prm); 6319 } 6320 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6321} 6322 6323/* Must be called under tgt_host_action_mutex */ 6324int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6325{ 6326 struct qla_tgt *tgt; 6327 int rc, i; 6328 struct qla_qpair_hint *h; 6329 6330 if (!QLA_TGT_MODE_ENABLED()) 6331 return 0; 6332 6333 if (!IS_TGT_MODE_CAPABLE(ha)) { 6334 ql_log(ql_log_warn, base_vha, 0xe070, 6335 "This adapter does not support target mode.\n"); 6336 return 0; 6337 } 6338 6339 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6340 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6341 6342 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6343 6344 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6345 if (!tgt) { 6346 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6347 "Unable to allocate struct qla_tgt\n"); 6348 return -ENOMEM; 6349 } 6350 6351 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6352 sizeof(struct qla_qpair_hint), 6353 GFP_KERNEL); 6354 if (!tgt->qphints) { 6355 kfree(tgt); 6356 ql_log(ql_log_warn, base_vha, 0x0197, 6357 "Unable to allocate qpair hints.\n"); 6358 return -ENOMEM; 6359 } 6360 6361 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6362 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6363 6364 rc = btree_init64(&tgt->lun_qpair_map); 6365 if (rc) { 6366 kfree(tgt->qphints); 6367 kfree(tgt); 6368 ql_log(ql_log_info, base_vha, 0x0198, 6369 "Unable to initialize lun_qpair_map btree\n"); 6370 return -EIO; 6371 } 6372 h = &tgt->qphints[0]; 6373 h->qpair = ha->base_qpair; 6374 INIT_LIST_HEAD(&h->hint_elem); 6375 h->cpuid = ha->base_qpair->cpuid; 6376 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6377 6378 for (i = 0; i < ha->max_qpairs; i++) { 6379 unsigned long flags; 6380 6381 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6382 6383 h = &tgt->qphints[i + 1]; 6384 INIT_LIST_HEAD(&h->hint_elem); 6385 if (qpair) { 6386 h->qpair = qpair; 6387 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6388 list_add_tail(&h->hint_elem, &qpair->hints_list); 6389 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6390 h->cpuid = qpair->cpuid; 6391 } 6392 } 6393 6394 tgt->ha = ha; 6395 tgt->vha = base_vha; 6396 init_waitqueue_head(&tgt->waitQ); 6397 INIT_LIST_HEAD(&tgt->del_sess_list); 6398 spin_lock_init(&tgt->sess_work_lock); 6399 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6400 INIT_LIST_HEAD(&tgt->sess_works_list); 6401 atomic_set(&tgt->tgt_global_resets_count, 0); 6402 6403 base_vha->vha_tgt.qla_tgt = tgt; 6404 6405 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6406 "qla_target(%d): using 64 Bit PCI addressing", 6407 base_vha->vp_idx); 6408 /* 3 is reserved */ 6409 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6410 6411 mutex_lock(&qla_tgt_mutex); 6412 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6413 mutex_unlock(&qla_tgt_mutex); 6414 6415 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6416 ha->tgt.tgt_ops->add_target(base_vha); 6417 6418 return 0; 6419} 6420 6421/* Must be called under tgt_host_action_mutex */ 6422int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6423{ 6424 if (!vha->vha_tgt.qla_tgt) 6425 return 0; 6426 6427 if (vha->fc_vport) { 6428 qlt_release(vha->vha_tgt.qla_tgt); 6429 return 0; 6430 } 6431 6432 /* free left over qfull cmds */ 6433 qlt_init_term_exchange(vha); 6434 6435 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6436 vha->host_no, ha); 6437 qlt_release(vha->vha_tgt.qla_tgt); 6438 6439 return 0; 6440} 6441 6442void qlt_remove_target_resources(struct qla_hw_data *ha) 6443{ 6444 struct scsi_qla_host *node; 6445 u32 key = 0; 6446 6447 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6448 btree_remove32(&ha->tgt.host_map, key); 6449 6450 btree_destroy32(&ha->tgt.host_map); 6451} 6452 6453static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6454 unsigned char *b) 6455{ 6456 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6457 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6458 put_unaligned_be64(wwpn, b); 6459 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6460} 6461 6462/** 6463 * qla_tgt_lport_register - register lport with external module 6464 * 6465 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6466 * @phys_wwpn: physical port WWPN 6467 * @npiv_wwpn: NPIV WWPN 6468 * @npiv_wwnn: NPIV WWNN 6469 * @callback: lport initialization callback for tcm_qla2xxx code 6470 */ 6471int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6472 u64 npiv_wwpn, u64 npiv_wwnn, 6473 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6474{ 6475 struct qla_tgt *tgt; 6476 struct scsi_qla_host *vha; 6477 struct qla_hw_data *ha; 6478 struct Scsi_Host *host; 6479 unsigned long flags; 6480 int rc; 6481 u8 b[WWN_SIZE]; 6482 6483 mutex_lock(&qla_tgt_mutex); 6484 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6485 vha = tgt->vha; 6486 ha = vha->hw; 6487 6488 host = vha->host; 6489 if (!host) 6490 continue; 6491 6492 if (!(host->hostt->supported_mode & MODE_TARGET)) 6493 continue; 6494 6495 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6496 continue; 6497 6498 spin_lock_irqsave(&ha->hardware_lock, flags); 6499 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6500 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6501 host->host_no); 6502 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6503 continue; 6504 } 6505 if (tgt->tgt_stop) { 6506 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6507 host->host_no); 6508 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6509 continue; 6510 } 6511 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6512 6513 if (!scsi_host_get(host)) { 6514 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6515 "Unable to scsi_host_get() for" 6516 " qla2xxx scsi_host\n"); 6517 continue; 6518 } 6519 qlt_lport_dump(vha, phys_wwpn, b); 6520 6521 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6522 scsi_host_put(host); 6523 continue; 6524 } 6525 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6526 if (rc != 0) 6527 scsi_host_put(host); 6528 6529 mutex_unlock(&qla_tgt_mutex); 6530 return rc; 6531 } 6532 mutex_unlock(&qla_tgt_mutex); 6533 6534 return -ENODEV; 6535} 6536EXPORT_SYMBOL(qlt_lport_register); 6537 6538/** 6539 * qla_tgt_lport_deregister - Degister lport 6540 * 6541 * @vha: Registered scsi_qla_host pointer 6542 */ 6543void qlt_lport_deregister(struct scsi_qla_host *vha) 6544{ 6545 struct qla_hw_data *ha = vha->hw; 6546 struct Scsi_Host *sh = vha->host; 6547 /* 6548 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6549 */ 6550 vha->vha_tgt.target_lport_ptr = NULL; 6551 ha->tgt.tgt_ops = NULL; 6552 /* 6553 * Release the Scsi_Host reference for the underlying qla2xxx host 6554 */ 6555 scsi_host_put(sh); 6556} 6557EXPORT_SYMBOL(qlt_lport_deregister); 6558 6559/* Must be called under HW lock */ 6560void qlt_set_mode(struct scsi_qla_host *vha) 6561{ 6562 switch (vha->qlini_mode) { 6563 case QLA2XXX_INI_MODE_DISABLED: 6564 case QLA2XXX_INI_MODE_EXCLUSIVE: 6565 vha->host->active_mode = MODE_TARGET; 6566 break; 6567 case QLA2XXX_INI_MODE_ENABLED: 6568 vha->host->active_mode = MODE_INITIATOR; 6569 break; 6570 case QLA2XXX_INI_MODE_DUAL: 6571 vha->host->active_mode = MODE_DUAL; 6572 break; 6573 default: 6574 break; 6575 } 6576} 6577 6578/* Must be called under HW lock */ 6579static void qlt_clear_mode(struct scsi_qla_host *vha) 6580{ 6581 switch (vha->qlini_mode) { 6582 case QLA2XXX_INI_MODE_DISABLED: 6583 vha->host->active_mode = MODE_UNKNOWN; 6584 break; 6585 case QLA2XXX_INI_MODE_EXCLUSIVE: 6586 vha->host->active_mode = MODE_INITIATOR; 6587 break; 6588 case QLA2XXX_INI_MODE_ENABLED: 6589 case QLA2XXX_INI_MODE_DUAL: 6590 vha->host->active_mode = MODE_INITIATOR; 6591 break; 6592 default: 6593 break; 6594 } 6595} 6596 6597/* 6598 * qla_tgt_enable_vha - NO LOCK HELD 6599 * 6600 * host_reset, bring up w/ Target Mode Enabled 6601 */ 6602void 6603qlt_enable_vha(struct scsi_qla_host *vha) 6604{ 6605 struct qla_hw_data *ha = vha->hw; 6606 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6607 unsigned long flags; 6608 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6609 6610 if (!tgt) { 6611 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6612 "Unable to locate qla_tgt pointer from" 6613 " struct qla_hw_data\n"); 6614 dump_stack(); 6615 return; 6616 } 6617 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6618 return; 6619 6620 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6621 ha->tgt.num_act_qpairs = ha->max_qpairs; 6622 spin_lock_irqsave(&ha->hardware_lock, flags); 6623 tgt->tgt_stopped = 0; 6624 qlt_set_mode(vha); 6625 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6626 6627 mutex_lock(&ha->optrom_mutex); 6628 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6629 "%s.\n", __func__); 6630 if (vha->vp_idx) { 6631 qla24xx_disable_vp(vha); 6632 qla24xx_enable_vp(vha); 6633 } else { 6634 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6635 qla2xxx_wake_dpc(base_vha); 6636 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6637 QLA_SUCCESS); 6638 } 6639 mutex_unlock(&ha->optrom_mutex); 6640} 6641EXPORT_SYMBOL(qlt_enable_vha); 6642 6643/* 6644 * qla_tgt_disable_vha - NO LOCK HELD 6645 * 6646 * Disable Target Mode and reset the adapter 6647 */ 6648static void qlt_disable_vha(struct scsi_qla_host *vha) 6649{ 6650 struct qla_hw_data *ha = vha->hw; 6651 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6652 unsigned long flags; 6653 6654 if (!tgt) { 6655 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6656 "Unable to locate qla_tgt pointer from" 6657 " struct qla_hw_data\n"); 6658 dump_stack(); 6659 return; 6660 } 6661 6662 spin_lock_irqsave(&ha->hardware_lock, flags); 6663 qlt_clear_mode(vha); 6664 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6665 6666 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6667 qla2xxx_wake_dpc(vha); 6668 6669 /* 6670 * We are expecting the offline state. 6671 * QLA_FUNCTION_FAILED means that adapter is offline. 6672 */ 6673 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6674 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6675 "adapter is offline\n"); 6676} 6677 6678/* 6679 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6680 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6681 * members. 6682 */ 6683void 6684qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6685{ 6686 vha->vha_tgt.qla_tgt = NULL; 6687 6688 mutex_init(&vha->vha_tgt.tgt_mutex); 6689 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6690 6691 qlt_clear_mode(vha); 6692 6693 /* 6694 * NOTE: Currently the value is kept the same for <24xx and 6695 * >=24xx ISPs. If it is necessary to change it, 6696 * the check should be added for specific ISPs, 6697 * assigning the value appropriately. 6698 */ 6699 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6700 6701 qlt_add_target(ha, vha); 6702} 6703 6704u8 6705qlt_rff_id(struct scsi_qla_host *vha) 6706{ 6707 u8 fc4_feature = 0; 6708 /* 6709 * FC-4 Feature bit 0 indicates target functionality to the name server. 6710 */ 6711 if (qla_tgt_mode_enabled(vha)) { 6712 fc4_feature = BIT_0; 6713 } else if (qla_ini_mode_enabled(vha)) { 6714 fc4_feature = BIT_1; 6715 } else if (qla_dual_mode_enabled(vha)) 6716 fc4_feature = BIT_0 | BIT_1; 6717 6718 return fc4_feature; 6719} 6720 6721/* 6722 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6723 * @ha: HA context 6724 * 6725 * Beginning of ATIO ring has initialization control block already built 6726 * by nvram config routine. 6727 * 6728 * Returns 0 on success. 6729 */ 6730void 6731qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6732{ 6733 struct qla_hw_data *ha = vha->hw; 6734 uint16_t cnt; 6735 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6736 6737 if (qla_ini_mode_enabled(vha)) 6738 return; 6739 6740 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6741 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6742 pkt++; 6743 } 6744 6745} 6746 6747/* 6748 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6749 * @ha: SCSI driver HA context 6750 */ 6751void 6752qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6753{ 6754 struct qla_hw_data *ha = vha->hw; 6755 struct atio_from_isp *pkt; 6756 int cnt, i; 6757 6758 if (!ha->flags.fw_started) 6759 return; 6760 6761 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6762 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6763 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6764 cnt = pkt->u.raw.entry_count; 6765 6766 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6767 /* 6768 * This packet is corrupted. The header + payload 6769 * can not be trusted. There is no point in passing 6770 * it further up. 6771 */ 6772 ql_log(ql_log_warn, vha, 0xd03c, 6773 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6774 &pkt->u.isp24.fcp_hdr.s_id, 6775 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6776 pkt->u.isp24.exchange_addr, pkt); 6777 6778 adjust_corrupted_atio(pkt); 6779 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6780 ha_locked, 0); 6781 } else { 6782 qlt_24xx_atio_pkt_all_vps(vha, 6783 (struct atio_from_isp *)pkt, ha_locked); 6784 } 6785 6786 for (i = 0; i < cnt; i++) { 6787 ha->tgt.atio_ring_index++; 6788 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6789 ha->tgt.atio_ring_index = 0; 6790 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6791 } else 6792 ha->tgt.atio_ring_ptr++; 6793 6794 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6795 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6796 } 6797 wmb(); 6798 } 6799 6800 /* Adjust ring index */ 6801 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6802} 6803 6804void 6805qlt_24xx_config_rings(struct scsi_qla_host *vha) 6806{ 6807 struct qla_hw_data *ha = vha->hw; 6808 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6809 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6810 6811 if (!QLA_TGT_MODE_ENABLED()) 6812 return; 6813 6814 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6815 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6816 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6817 6818 if (ha->flags.msix_enabled) { 6819 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6820 icb->msix_atio = cpu_to_le16(msix->entry); 6821 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6822 ql_dbg(ql_dbg_init, vha, 0xf072, 6823 "Registering ICB vector 0x%x for atio que.\n", 6824 msix->entry); 6825 } 6826 } else { 6827 /* INTx|MSI */ 6828 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6829 icb->msix_atio = 0; 6830 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6831 ql_dbg(ql_dbg_init, vha, 0xf072, 6832 "%s: Use INTx for ATIOQ.\n", __func__); 6833 } 6834 } 6835} 6836 6837void 6838qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6839{ 6840 struct qla_hw_data *ha = vha->hw; 6841 u32 tmp; 6842 6843 if (!QLA_TGT_MODE_ENABLED()) 6844 return; 6845 6846 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6847 if (!ha->tgt.saved_set) { 6848 /* We save only once */ 6849 ha->tgt.saved_exchange_count = nv->exchange_count; 6850 ha->tgt.saved_firmware_options_1 = 6851 nv->firmware_options_1; 6852 ha->tgt.saved_firmware_options_2 = 6853 nv->firmware_options_2; 6854 ha->tgt.saved_firmware_options_3 = 6855 nv->firmware_options_3; 6856 ha->tgt.saved_set = 1; 6857 } 6858 6859 if (qla_tgt_mode_enabled(vha)) 6860 nv->exchange_count = cpu_to_le16(0xFFFF); 6861 else /* dual */ 6862 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6863 6864 /* Enable target mode */ 6865 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6866 6867 /* Disable ini mode, if requested */ 6868 if (qla_tgt_mode_enabled(vha)) 6869 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6870 6871 /* Disable Full Login after LIP */ 6872 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6873 /* Enable initial LIP */ 6874 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6875 if (ql2xtgt_tape_enable) 6876 /* Enable FC Tape support */ 6877 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6878 else 6879 /* Disable FC Tape support */ 6880 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6881 6882 /* Disable Full Login after LIP */ 6883 nv->host_p &= cpu_to_le32(~BIT_10); 6884 6885 /* 6886 * clear BIT 15 explicitly as we have seen at least 6887 * a couple of instances where this was set and this 6888 * was causing the firmware to not be initialized. 6889 */ 6890 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6891 /* Enable target PRLI control */ 6892 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6893 6894 if (IS_QLA25XX(ha)) { 6895 /* Change Loop-prefer to Pt-Pt */ 6896 tmp = ~(BIT_4|BIT_5|BIT_6); 6897 nv->firmware_options_2 &= cpu_to_le32(tmp); 6898 tmp = P2P << 4; 6899 nv->firmware_options_2 |= cpu_to_le32(tmp); 6900 } 6901 } else { 6902 if (ha->tgt.saved_set) { 6903 nv->exchange_count = ha->tgt.saved_exchange_count; 6904 nv->firmware_options_1 = 6905 ha->tgt.saved_firmware_options_1; 6906 nv->firmware_options_2 = 6907 ha->tgt.saved_firmware_options_2; 6908 nv->firmware_options_3 = 6909 ha->tgt.saved_firmware_options_3; 6910 } 6911 return; 6912 } 6913 6914 if (ha->base_qpair->enable_class_2) { 6915 if (vha->flags.init_done) 6916 fc_host_supported_classes(vha->host) = 6917 FC_COS_CLASS2 | FC_COS_CLASS3; 6918 6919 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6920 } else { 6921 if (vha->flags.init_done) 6922 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6923 6924 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6925 } 6926} 6927 6928void 6929qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6930 struct init_cb_24xx *icb) 6931{ 6932 struct qla_hw_data *ha = vha->hw; 6933 6934 if (!QLA_TGT_MODE_ENABLED()) 6935 return; 6936 6937 if (ha->tgt.node_name_set) { 6938 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6939 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6940 } 6941} 6942 6943void 6944qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6945{ 6946 struct qla_hw_data *ha = vha->hw; 6947 u32 tmp; 6948 6949 if (!QLA_TGT_MODE_ENABLED()) 6950 return; 6951 6952 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6953 if (!ha->tgt.saved_set) { 6954 /* We save only once */ 6955 ha->tgt.saved_exchange_count = nv->exchange_count; 6956 ha->tgt.saved_firmware_options_1 = 6957 nv->firmware_options_1; 6958 ha->tgt.saved_firmware_options_2 = 6959 nv->firmware_options_2; 6960 ha->tgt.saved_firmware_options_3 = 6961 nv->firmware_options_3; 6962 ha->tgt.saved_set = 1; 6963 } 6964 6965 if (qla_tgt_mode_enabled(vha)) 6966 nv->exchange_count = cpu_to_le16(0xFFFF); 6967 else /* dual */ 6968 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6969 6970 /* Enable target mode */ 6971 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6972 6973 /* Disable ini mode, if requested */ 6974 if (qla_tgt_mode_enabled(vha)) 6975 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6976 /* Disable Full Login after LIP */ 6977 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6978 /* Enable initial LIP */ 6979 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6980 /* 6981 * clear BIT 15 explicitly as we have seen at 6982 * least a couple of instances where this was set 6983 * and this was causing the firmware to not be 6984 * initialized. 6985 */ 6986 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6987 if (ql2xtgt_tape_enable) 6988 /* Enable FC tape support */ 6989 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6990 else 6991 /* Disable FC tape support */ 6992 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6993 6994 /* Disable Full Login after LIP */ 6995 nv->host_p &= cpu_to_le32(~BIT_10); 6996 /* Enable target PRLI control */ 6997 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6998 6999 /* Change Loop-prefer to Pt-Pt */ 7000 tmp = ~(BIT_4|BIT_5|BIT_6); 7001 nv->firmware_options_2 &= cpu_to_le32(tmp); 7002 tmp = P2P << 4; 7003 nv->firmware_options_2 |= cpu_to_le32(tmp); 7004 } else { 7005 if (ha->tgt.saved_set) { 7006 nv->exchange_count = ha->tgt.saved_exchange_count; 7007 nv->firmware_options_1 = 7008 ha->tgt.saved_firmware_options_1; 7009 nv->firmware_options_2 = 7010 ha->tgt.saved_firmware_options_2; 7011 nv->firmware_options_3 = 7012 ha->tgt.saved_firmware_options_3; 7013 } 7014 return; 7015 } 7016 7017 if (ha->base_qpair->enable_class_2) { 7018 if (vha->flags.init_done) 7019 fc_host_supported_classes(vha->host) = 7020 FC_COS_CLASS2 | FC_COS_CLASS3; 7021 7022 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7023 } else { 7024 if (vha->flags.init_done) 7025 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7026 7027 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7028 } 7029} 7030 7031void 7032qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7033 struct init_cb_81xx *icb) 7034{ 7035 struct qla_hw_data *ha = vha->hw; 7036 7037 if (!QLA_TGT_MODE_ENABLED()) 7038 return; 7039 7040 if (ha->tgt.node_name_set) { 7041 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7042 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7043 } 7044} 7045 7046void 7047qlt_83xx_iospace_config(struct qla_hw_data *ha) 7048{ 7049 if (!QLA_TGT_MODE_ENABLED()) 7050 return; 7051 7052 ha->msix_count += 1; /* For ATIO Q */ 7053} 7054 7055 7056void 7057qlt_modify_vp_config(struct scsi_qla_host *vha, 7058 struct vp_config_entry_24xx *vpmod) 7059{ 7060 /* enable target mode. Bit5 = 1 => disable */ 7061 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7062 vpmod->options_idx1 &= ~BIT_5; 7063 7064 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7065 if (qla_tgt_mode_enabled(vha)) 7066 vpmod->options_idx1 &= ~BIT_4; 7067} 7068 7069void 7070qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7071{ 7072 int rc; 7073 7074 if (!QLA_TGT_MODE_ENABLED()) 7075 return; 7076 7077 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7078 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7079 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7080 } else { 7081 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7082 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7083 } 7084 7085 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7086 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7087 7088 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7089 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7090 qlt_unknown_atio_work_fn); 7091 7092 qlt_clear_mode(base_vha); 7093 7094 rc = btree_init32(&ha->tgt.host_map); 7095 if (rc) 7096 ql_log(ql_log_info, base_vha, 0xd03d, 7097 "Unable to initialize ha->host_map btree\n"); 7098 7099 qlt_update_vp_map(base_vha, SET_VP_IDX); 7100} 7101 7102irqreturn_t 7103qla83xx_msix_atio_q(int irq, void *dev_id) 7104{ 7105 struct rsp_que *rsp; 7106 scsi_qla_host_t *vha; 7107 struct qla_hw_data *ha; 7108 unsigned long flags; 7109 7110 rsp = (struct rsp_que *) dev_id; 7111 ha = rsp->hw; 7112 vha = pci_get_drvdata(ha->pdev); 7113 7114 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7115 7116 qlt_24xx_process_atio_queue(vha, 0); 7117 7118 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7119 7120 return IRQ_HANDLED; 7121} 7122 7123static void 7124qlt_handle_abts_recv_work(struct work_struct *work) 7125{ 7126 struct qla_tgt_sess_op *op = container_of(work, 7127 struct qla_tgt_sess_op, work); 7128 scsi_qla_host_t *vha = op->vha; 7129 struct qla_hw_data *ha = vha->hw; 7130 unsigned long flags; 7131 7132 if (qla2x00_reset_active(vha) || 7133 (op->chip_reset != ha->base_qpair->chip_reset)) 7134 return; 7135 7136 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7137 qlt_24xx_process_atio_queue(vha, 0); 7138 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7139 7140 spin_lock_irqsave(&ha->hardware_lock, flags); 7141 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7142 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7143 7144 kfree(op); 7145} 7146 7147void 7148qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7149 response_t *pkt) 7150{ 7151 struct qla_tgt_sess_op *op; 7152 7153 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7154 7155 if (!op) { 7156 /* do not reach for ATIO queue here. This is best effort err 7157 * recovery at this point. 7158 */ 7159 qlt_response_pkt_all_vps(vha, rsp, pkt); 7160 return; 7161 } 7162 7163 memcpy(&op->atio, pkt, sizeof(*pkt)); 7164 op->vha = vha; 7165 op->chip_reset = vha->hw->base_qpair->chip_reset; 7166 op->rsp = rsp; 7167 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7168 queue_work(qla_tgt_wq, &op->work); 7169 return; 7170} 7171 7172int 7173qlt_mem_alloc(struct qla_hw_data *ha) 7174{ 7175 if (!QLA_TGT_MODE_ENABLED()) 7176 return 0; 7177 7178 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7179 sizeof(struct qla_tgt_vp_map), 7180 GFP_KERNEL); 7181 if (!ha->tgt.tgt_vp_map) 7182 return -ENOMEM; 7183 7184 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7185 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7186 &ha->tgt.atio_dma, GFP_KERNEL); 7187 if (!ha->tgt.atio_ring) { 7188 kfree(ha->tgt.tgt_vp_map); 7189 return -ENOMEM; 7190 } 7191 return 0; 7192} 7193 7194void 7195qlt_mem_free(struct qla_hw_data *ha) 7196{ 7197 if (!QLA_TGT_MODE_ENABLED()) 7198 return; 7199 7200 if (ha->tgt.atio_ring) { 7201 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7202 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7203 ha->tgt.atio_dma); 7204 } 7205 ha->tgt.atio_ring = NULL; 7206 ha->tgt.atio_dma = 0; 7207 kfree(ha->tgt.tgt_vp_map); 7208 ha->tgt.tgt_vp_map = NULL; 7209} 7210 7211/* vport_slock to be held by the caller */ 7212void 7213qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7214{ 7215 void *slot; 7216 u32 key; 7217 int rc; 7218 7219 if (!QLA_TGT_MODE_ENABLED()) 7220 return; 7221 7222 key = vha->d_id.b24; 7223 7224 switch (cmd) { 7225 case SET_VP_IDX: 7226 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7227 break; 7228 case SET_AL_PA: 7229 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7230 if (!slot) { 7231 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7232 "Save vha in host_map %p %06x\n", vha, key); 7233 rc = btree_insert32(&vha->hw->tgt.host_map, 7234 key, vha, GFP_ATOMIC); 7235 if (rc) 7236 ql_log(ql_log_info, vha, 0xd03e, 7237 "Unable to insert s_id into host_map: %06x\n", 7238 key); 7239 return; 7240 } 7241 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7242 "replace existing vha in host_map %p %06x\n", vha, key); 7243 btree_update32(&vha->hw->tgt.host_map, key, vha); 7244 break; 7245 case RESET_VP_IDX: 7246 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7247 break; 7248 case RESET_AL_PA: 7249 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7250 "clear vha in host_map %p %06x\n", vha, key); 7251 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7252 if (slot) 7253 btree_remove32(&vha->hw->tgt.host_map, key); 7254 vha->d_id.b24 = 0; 7255 break; 7256 } 7257} 7258 7259void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7260{ 7261 7262 if (!vha->d_id.b24) { 7263 vha->d_id = id; 7264 qlt_update_vp_map(vha, SET_AL_PA); 7265 } else if (vha->d_id.b24 != id.b24) { 7266 qlt_update_vp_map(vha, RESET_AL_PA); 7267 vha->d_id = id; 7268 qlt_update_vp_map(vha, SET_AL_PA); 7269 } 7270} 7271 7272static int __init qlt_parse_ini_mode(void) 7273{ 7274 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7275 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7276 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7277 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7278 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7279 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7280 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7281 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7282 else 7283 return false; 7284 7285 return true; 7286} 7287 7288int __init qlt_init(void) 7289{ 7290 int ret; 7291 7292 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7293 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7294 7295 if (!qlt_parse_ini_mode()) { 7296 ql_log(ql_log_fatal, NULL, 0xe06b, 7297 "qlt_parse_ini_mode() failed\n"); 7298 return -EINVAL; 7299 } 7300 7301 if (!QLA_TGT_MODE_ENABLED()) 7302 return 0; 7303 7304 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7305 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7306 qla_tgt_mgmt_cmd), 0, NULL); 7307 if (!qla_tgt_mgmt_cmd_cachep) { 7308 ql_log(ql_log_fatal, NULL, 0xd04b, 7309 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7310 return -ENOMEM; 7311 } 7312 7313 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7314 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7315 0, NULL); 7316 7317 if (!qla_tgt_plogi_cachep) { 7318 ql_log(ql_log_fatal, NULL, 0xe06d, 7319 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7320 ret = -ENOMEM; 7321 goto out_mgmt_cmd_cachep; 7322 } 7323 7324 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7325 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7326 if (!qla_tgt_mgmt_cmd_mempool) { 7327 ql_log(ql_log_fatal, NULL, 0xe06e, 7328 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7329 ret = -ENOMEM; 7330 goto out_plogi_cachep; 7331 } 7332 7333 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7334 if (!qla_tgt_wq) { 7335 ql_log(ql_log_fatal, NULL, 0xe06f, 7336 "alloc_workqueue for qla_tgt_wq failed\n"); 7337 ret = -ENOMEM; 7338 goto out_cmd_mempool; 7339 } 7340 /* 7341 * Return 1 to signal that initiator-mode is being disabled 7342 */ 7343 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7344 7345out_cmd_mempool: 7346 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7347out_plogi_cachep: 7348 kmem_cache_destroy(qla_tgt_plogi_cachep); 7349out_mgmt_cmd_cachep: 7350 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7351 return ret; 7352} 7353 7354void qlt_exit(void) 7355{ 7356 if (!QLA_TGT_MODE_ENABLED()) 7357 return; 7358 7359 destroy_workqueue(qla_tgt_wq); 7360 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7361 kmem_cache_destroy(qla_tgt_plogi_cachep); 7362 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7363} 7364