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 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_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 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_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 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum 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 */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static 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); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static 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); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static 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 */ 162 void 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!! */ 171 static 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 } 186 187 static inline 188 struct 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 } 208 209 static inline 210 struct 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 } 224 225 static 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 } 237 static 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 } 245 246 247 static 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); 274 275 out: 276 return; 277 278 out_term: 279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 280 goto out; 281 } 282 283 static 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 } 323 324 abort: 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 } 331 332 void 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 } 339 340 static 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 != 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 } 436 437 void 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 /* fall through */ 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 */ 545 static 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 } 559 560 static 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 } 614 615 int 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; 661 662 done_free_sp: 663 sp->free(sp); 664 done: 665 fcport->flags &= ~FCF_ASYNC_SENT; 666 return rval; 667 } 668 669 void 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 } 692 693 void 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 */ 709 void 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 */ 782 static struct qlt_plogi_ack_t * 783 qlt_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 } 816 817 void 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 } 863 864 void 865 qlt_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 } 899 900 typedef 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; 913 914 static void 915 qlt_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 } 945 946 void 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(&vha->work_lock, flags); 1048 sess->flags &= ~FCF_ASYNC_SENT; 1049 spin_unlock_irqrestore(&vha->work_lock, flags); 1050 1051 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1052 if (sess->se_sess) { 1053 sess->se_sess = NULL; 1054 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1055 tgt->sess_count--; 1056 } 1057 1058 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1059 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1060 sess->deleted = QLA_SESS_DELETED; 1061 1062 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1063 vha->fcport_count--; 1064 sess->login_succ = 0; 1065 } 1066 1067 qla2x00_clear_loop_id(sess); 1068 1069 if (sess->conflict) { 1070 sess->conflict->login_pause = 0; 1071 sess->conflict = NULL; 1072 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1073 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1074 } 1075 1076 { 1077 struct qlt_plogi_ack_t *con = 1078 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1079 struct imm_ntfy_from_isp *iocb; 1080 1081 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1082 1083 if (con) { 1084 iocb = &con->iocb; 1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1086 "se_sess %p / sess %p port %8phC is gone," 1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1088 sess->se_sess, sess, sess->port_name, 1089 own ? "releasing own PLOGI" : "no own PLOGI pending", 1090 own ? own->ref_count : -1, 1091 iocb->u.isp24.port_name, con->ref_count); 1092 qlt_plogi_ack_unref(vha, con); 1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1094 } else { 1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1097 sess->se_sess, sess, sess->port_name, 1098 own ? "releasing own PLOGI" : 1099 "no own PLOGI pending", 1100 own ? own->ref_count : -1); 1101 } 1102 1103 if (own) { 1104 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1105 qlt_plogi_ack_unref(vha, own); 1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1107 } 1108 } 1109 1110 sess->explicit_logout = 0; 1111 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1112 sess->free_pending = 0; 1113 1114 ql_dbg(ql_dbg_disc, vha, 0xf001, 1115 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1116 sess, sess->port_name, vha->fcport_count); 1117 1118 if (tgt && (tgt->sess_count == 0)) 1119 wake_up_all(&tgt->waitQ); 1120 1121 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1122 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1123 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1124 switch (vha->host->active_mode) { 1125 case MODE_INITIATOR: 1126 case MODE_DUAL: 1127 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1128 qla2xxx_wake_dpc(vha); 1129 break; 1130 case MODE_TARGET: 1131 default: 1132 /* no-op */ 1133 break; 1134 } 1135 } 1136 1137 if (vha->fcport_count == 0) 1138 wake_up_all(&vha->fcport_waitQ); 1139 } 1140 1141 /* ha->tgt.sess_lock supposed to be held on entry */ 1142 void qlt_unreg_sess(struct fc_port *sess) 1143 { 1144 struct scsi_qla_host *vha = sess->vha; 1145 unsigned long flags; 1146 1147 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1148 "%s sess %p for deletion %8phC\n", 1149 __func__, sess, sess->port_name); 1150 1151 spin_lock_irqsave(&sess->vha->work_lock, flags); 1152 if (sess->free_pending) { 1153 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1154 return; 1155 } 1156 sess->free_pending = 1; 1157 /* 1158 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1159 * management from being sent. 1160 */ 1161 sess->flags |= FCF_ASYNC_SENT; 1162 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1163 1164 if (sess->se_sess) 1165 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1166 1167 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1168 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1169 sess->last_rscn_gen = sess->rscn_gen; 1170 sess->last_login_gen = sess->login_gen; 1171 1172 queue_work(sess->vha->hw->wq, &sess->free_work); 1173 } 1174 EXPORT_SYMBOL(qlt_unreg_sess); 1175 1176 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1177 { 1178 struct qla_hw_data *ha = vha->hw; 1179 struct fc_port *sess = NULL; 1180 uint16_t loop_id; 1181 int res = 0; 1182 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1183 unsigned long flags; 1184 1185 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1186 if (loop_id == 0xFFFF) { 1187 /* Global event */ 1188 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1189 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1190 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1191 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1192 } else { 1193 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1194 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1195 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1196 } 1197 1198 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1199 "Using sess for qla_tgt_reset: %p\n", sess); 1200 if (!sess) { 1201 res = -ESRCH; 1202 return res; 1203 } 1204 1205 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1206 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1207 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1208 mcmd, loop_id); 1209 1210 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1211 } 1212 1213 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1214 { 1215 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1216 sess->logout_on_delete = 0; 1217 sess->logo_ack_needed = 0; 1218 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1219 } 1220 } 1221 1222 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1223 { 1224 struct qla_tgt *tgt = sess->tgt; 1225 unsigned long flags; 1226 u16 sec; 1227 1228 switch (sess->disc_state) { 1229 case DSC_DELETE_PEND: 1230 return; 1231 case DSC_DELETED: 1232 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1233 wake_up_all(&tgt->waitQ); 1234 if (sess->vha->fcport_count == 0) 1235 wake_up_all(&sess->vha->fcport_waitQ); 1236 1237 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1238 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1239 return; 1240 break; 1241 case DSC_UPD_FCPORT: 1242 /* 1243 * This port is not done reporting to upper layer. 1244 * let it finish 1245 */ 1246 sess->next_disc_state = DSC_DELETE_PEND; 1247 sec = jiffies_to_msecs(jiffies - 1248 sess->jiffies_at_registration)/1000; 1249 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1250 sess->sec_since_registration = sec; 1251 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1252 "%s %8phC : Slow Rport registration(%d Sec)\n", 1253 __func__, sess->port_name, sec); 1254 } 1255 return; 1256 default: 1257 break; 1258 } 1259 1260 spin_lock_irqsave(&sess->vha->work_lock, flags); 1261 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1262 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1263 return; 1264 } 1265 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1266 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1267 1268 sess->prli_pend_timer = 0; 1269 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1270 1271 qla24xx_chk_fcp_state(sess); 1272 1273 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1274 "Scheduling sess %p for deletion %8phC\n", 1275 sess, sess->port_name); 1276 1277 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1278 } 1279 1280 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1281 { 1282 struct fc_port *sess; 1283 scsi_qla_host_t *vha = tgt->vha; 1284 1285 list_for_each_entry(sess, &vha->vp_fcports, list) { 1286 if (sess->se_sess) 1287 qlt_schedule_sess_for_deletion(sess); 1288 } 1289 1290 /* At this point tgt could be already dead */ 1291 } 1292 1293 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1294 uint16_t *loop_id) 1295 { 1296 struct qla_hw_data *ha = vha->hw; 1297 dma_addr_t gid_list_dma; 1298 struct gid_list_info *gid_list, *gid; 1299 int res, rc, i; 1300 uint16_t entries; 1301 1302 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1303 &gid_list_dma, GFP_KERNEL); 1304 if (!gid_list) { 1305 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1306 "qla_target(%d): DMA Alloc failed of %u\n", 1307 vha->vp_idx, qla2x00_gid_list_size(ha)); 1308 return -ENOMEM; 1309 } 1310 1311 /* Get list of logged in devices */ 1312 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1313 if (rc != QLA_SUCCESS) { 1314 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1315 "qla_target(%d): get_id_list() failed: %x\n", 1316 vha->vp_idx, rc); 1317 res = -EBUSY; 1318 goto out_free_id_list; 1319 } 1320 1321 gid = gid_list; 1322 res = -ENOENT; 1323 for (i = 0; i < entries; i++) { 1324 if (gid->al_pa == s_id.al_pa && 1325 gid->area == s_id.area && 1326 gid->domain == s_id.domain) { 1327 *loop_id = le16_to_cpu(gid->loop_id); 1328 res = 0; 1329 break; 1330 } 1331 gid = (void *)gid + ha->gid_list_info_size; 1332 } 1333 1334 out_free_id_list: 1335 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1336 gid_list, gid_list_dma); 1337 return res; 1338 } 1339 1340 /* 1341 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1342 * Caller must put it. 1343 */ 1344 static struct fc_port *qlt_create_sess( 1345 struct scsi_qla_host *vha, 1346 fc_port_t *fcport, 1347 bool local) 1348 { 1349 struct qla_hw_data *ha = vha->hw; 1350 struct fc_port *sess = fcport; 1351 unsigned long flags; 1352 1353 if (vha->vha_tgt.qla_tgt->tgt_stop) 1354 return NULL; 1355 1356 if (fcport->se_sess) { 1357 if (!kref_get_unless_zero(&sess->sess_kref)) { 1358 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1359 "%s: kref_get_unless_zero failed for %8phC\n", 1360 __func__, sess->port_name); 1361 return NULL; 1362 } 1363 return fcport; 1364 } 1365 sess->tgt = vha->vha_tgt.qla_tgt; 1366 sess->local = local; 1367 1368 /* 1369 * Under normal circumstances we want to logout from firmware when 1370 * session eventually ends and release corresponding nport handle. 1371 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1372 * code will adjust these flags as necessary. 1373 */ 1374 sess->logout_on_delete = 1; 1375 sess->keep_nport_handle = 0; 1376 sess->logout_completed = 0; 1377 1378 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1379 &fcport->port_name[0], sess) < 0) { 1380 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1381 "(%d) %8phC check_initiator_node_acl failed\n", 1382 vha->vp_idx, fcport->port_name); 1383 return NULL; 1384 } else { 1385 kref_init(&fcport->sess_kref); 1386 /* 1387 * Take an extra reference to ->sess_kref here to handle 1388 * fc_port access across ->tgt.sess_lock reaquire. 1389 */ 1390 if (!kref_get_unless_zero(&sess->sess_kref)) { 1391 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1392 "%s: kref_get_unless_zero failed for %8phC\n", 1393 __func__, sess->port_name); 1394 return NULL; 1395 } 1396 1397 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1398 if (!IS_SW_RESV_ADDR(sess->d_id)) 1399 vha->vha_tgt.qla_tgt->sess_count++; 1400 1401 qlt_do_generation_tick(vha, &sess->generation); 1402 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1403 } 1404 1405 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1406 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1407 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1408 vha->vha_tgt.qla_tgt->sess_count); 1409 1410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1411 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1412 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1413 vha->vp_idx, local ? "local " : "", fcport->port_name, 1414 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1415 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1416 1417 return sess; 1418 } 1419 1420 /* 1421 * max_gen - specifies maximum session generation 1422 * at which this deletion requestion is still valid 1423 */ 1424 void 1425 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1426 { 1427 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1428 struct fc_port *sess = fcport; 1429 unsigned long flags; 1430 1431 if (!vha->hw->tgt.tgt_ops) 1432 return; 1433 1434 if (!tgt) 1435 return; 1436 1437 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1438 if (tgt->tgt_stop) { 1439 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1440 return; 1441 } 1442 if (!sess->se_sess) { 1443 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1444 return; 1445 } 1446 1447 if (max_gen - sess->generation < 0) { 1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1450 "Ignoring stale deletion request for se_sess %p / sess %p" 1451 " for port %8phC, req_gen %d, sess_gen %d\n", 1452 sess->se_sess, sess, sess->port_name, max_gen, 1453 sess->generation); 1454 return; 1455 } 1456 1457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1458 1459 sess->local = 1; 1460 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1461 qlt_schedule_sess_for_deletion(sess); 1462 } 1463 1464 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1465 { 1466 struct qla_hw_data *ha = tgt->ha; 1467 unsigned long flags; 1468 int res; 1469 /* 1470 * We need to protect against race, when tgt is freed before or 1471 * inside wake_up() 1472 */ 1473 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1474 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1475 "tgt %p, sess_count=%d\n", 1476 tgt, tgt->sess_count); 1477 res = (tgt->sess_count == 0); 1478 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1479 1480 return res; 1481 } 1482 1483 /* Called by tcm_qla2xxx configfs code */ 1484 int qlt_stop_phase1(struct qla_tgt *tgt) 1485 { 1486 struct scsi_qla_host *vha = tgt->vha; 1487 struct qla_hw_data *ha = tgt->ha; 1488 unsigned long flags; 1489 1490 mutex_lock(&ha->optrom_mutex); 1491 mutex_lock(&qla_tgt_mutex); 1492 1493 if (tgt->tgt_stop || tgt->tgt_stopped) { 1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1495 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1496 mutex_unlock(&qla_tgt_mutex); 1497 mutex_unlock(&ha->optrom_mutex); 1498 return -EPERM; 1499 } 1500 1501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1502 vha->host_no, vha); 1503 /* 1504 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1505 * Lock is needed, because we still can get an incoming packet. 1506 */ 1507 mutex_lock(&vha->vha_tgt.tgt_mutex); 1508 tgt->tgt_stop = 1; 1509 qlt_clear_tgt_db(tgt); 1510 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1511 mutex_unlock(&qla_tgt_mutex); 1512 1513 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1514 "Waiting for sess works (tgt %p)", tgt); 1515 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1516 while (!list_empty(&tgt->sess_works_list)) { 1517 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1518 flush_scheduled_work(); 1519 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1520 } 1521 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1522 1523 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1524 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1525 1526 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1527 1528 /* Big hammer */ 1529 if (!ha->flags.host_shutting_down && 1530 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1531 qlt_disable_vha(vha); 1532 1533 /* Wait for sessions to clear out (just in case) */ 1534 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1535 mutex_unlock(&ha->optrom_mutex); 1536 1537 return 0; 1538 } 1539 EXPORT_SYMBOL(qlt_stop_phase1); 1540 1541 /* Called by tcm_qla2xxx configfs code */ 1542 void qlt_stop_phase2(struct qla_tgt *tgt) 1543 { 1544 scsi_qla_host_t *vha = tgt->vha; 1545 1546 if (tgt->tgt_stopped) { 1547 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1548 "Already in tgt->tgt_stopped state\n"); 1549 dump_stack(); 1550 return; 1551 } 1552 if (!tgt->tgt_stop) { 1553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1554 "%s: phase1 stop is not completed\n", __func__); 1555 dump_stack(); 1556 return; 1557 } 1558 1559 mutex_lock(&vha->vha_tgt.tgt_mutex); 1560 tgt->tgt_stop = 0; 1561 tgt->tgt_stopped = 1; 1562 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1563 1564 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1565 tgt); 1566 1567 switch (vha->qlini_mode) { 1568 case QLA2XXX_INI_MODE_EXCLUSIVE: 1569 vha->flags.online = 1; 1570 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1571 break; 1572 default: 1573 break; 1574 } 1575 } 1576 EXPORT_SYMBOL(qlt_stop_phase2); 1577 1578 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1579 static void qlt_release(struct qla_tgt *tgt) 1580 { 1581 scsi_qla_host_t *vha = tgt->vha; 1582 void *node; 1583 u64 key = 0; 1584 u16 i; 1585 struct qla_qpair_hint *h; 1586 struct qla_hw_data *ha = vha->hw; 1587 1588 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1589 qlt_stop_phase1(tgt); 1590 1591 if (!tgt->tgt_stopped) 1592 qlt_stop_phase2(tgt); 1593 1594 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1595 unsigned long flags; 1596 1597 h = &tgt->qphints[i]; 1598 if (h->qpair) { 1599 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1600 list_del(&h->hint_elem); 1601 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1602 h->qpair = NULL; 1603 } 1604 } 1605 kfree(tgt->qphints); 1606 mutex_lock(&qla_tgt_mutex); 1607 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1608 mutex_unlock(&qla_tgt_mutex); 1609 1610 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1611 btree_remove64(&tgt->lun_qpair_map, key); 1612 1613 btree_destroy64(&tgt->lun_qpair_map); 1614 1615 if (vha->vp_idx) 1616 if (ha->tgt.tgt_ops && 1617 ha->tgt.tgt_ops->remove_target && 1618 vha->vha_tgt.target_lport_ptr) 1619 ha->tgt.tgt_ops->remove_target(vha); 1620 1621 vha->vha_tgt.qla_tgt = NULL; 1622 1623 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1624 "Release of tgt %p finished\n", tgt); 1625 1626 kfree(tgt); 1627 } 1628 1629 /* ha->hardware_lock supposed to be held on entry */ 1630 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1631 const void *param, unsigned int param_size) 1632 { 1633 struct qla_tgt_sess_work_param *prm; 1634 unsigned long flags; 1635 1636 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1637 if (!prm) { 1638 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1639 "qla_target(%d): Unable to create session " 1640 "work, command will be refused", 0); 1641 return -ENOMEM; 1642 } 1643 1644 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1645 "Scheduling work (type %d, prm %p)" 1646 " to find session for param %p (size %d, tgt %p)\n", 1647 type, prm, param, param_size, tgt); 1648 1649 prm->type = type; 1650 memcpy(&prm->tm_iocb, param, param_size); 1651 1652 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1653 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1654 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1655 1656 schedule_work(&tgt->sess_work); 1657 1658 return 0; 1659 } 1660 1661 /* 1662 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1663 */ 1664 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1665 struct imm_ntfy_from_isp *ntfy, 1666 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1667 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1668 { 1669 struct scsi_qla_host *vha = qpair->vha; 1670 struct qla_hw_data *ha = vha->hw; 1671 request_t *pkt; 1672 struct nack_to_isp *nack; 1673 1674 if (!ha->flags.fw_started) 1675 return; 1676 1677 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1678 1679 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1680 if (!pkt) { 1681 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1682 "qla_target(%d): %s failed: unable to allocate " 1683 "request packet\n", vha->vp_idx, __func__); 1684 return; 1685 } 1686 1687 if (vha->vha_tgt.qla_tgt != NULL) 1688 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1689 1690 pkt->entry_type = NOTIFY_ACK_TYPE; 1691 pkt->entry_count = 1; 1692 1693 nack = (struct nack_to_isp *)pkt; 1694 nack->ox_id = ntfy->ox_id; 1695 1696 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1697 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1698 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1699 nack->u.isp24.flags = ntfy->u.isp24.flags & 1700 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1701 } 1702 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1703 nack->u.isp24.status = ntfy->u.isp24.status; 1704 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1705 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1706 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1707 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1708 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1709 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1710 nack->u.isp24.srr_reject_code = srr_reject_code; 1711 nack->u.isp24.srr_reject_code_expl = srr_explan; 1712 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1713 1714 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1715 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1716 vha->vp_idx, nack->u.isp24.status); 1717 1718 /* Memory Barrier */ 1719 wmb(); 1720 qla2x00_start_iocbs(vha, qpair->req); 1721 } 1722 1723 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1724 { 1725 struct scsi_qla_host *vha = mcmd->vha; 1726 struct qla_hw_data *ha = vha->hw; 1727 struct abts_resp_to_24xx *resp; 1728 uint32_t f_ctl, h; 1729 uint8_t *p; 1730 int rc; 1731 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1732 struct qla_qpair *qpair = mcmd->qpair; 1733 1734 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1735 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1736 ha, mcmd->fc_tm_rsp); 1737 1738 rc = qlt_check_reserve_free_req(qpair, 1); 1739 if (rc) { 1740 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1741 "qla_target(%d): %s failed: unable to allocate request packet\n", 1742 vha->vp_idx, __func__); 1743 return -EAGAIN; 1744 } 1745 1746 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1747 memset(resp, 0, sizeof(*resp)); 1748 1749 h = qlt_make_handle(qpair); 1750 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1751 /* 1752 * CTIO type 7 from the firmware doesn't provide a way to 1753 * know the initiator's LOOP ID, hence we can't find 1754 * the session and, so, the command. 1755 */ 1756 return -EAGAIN; 1757 } else { 1758 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1759 } 1760 1761 resp->handle = make_handle(qpair->req->id, h); 1762 resp->entry_type = ABTS_RESP_24XX; 1763 resp->entry_count = 1; 1764 resp->nport_handle = abts->nport_handle; 1765 resp->vp_index = vha->vp_idx; 1766 resp->sof_type = abts->sof_type; 1767 resp->exchange_address = abts->exchange_address; 1768 resp->fcp_hdr_le = abts->fcp_hdr_le; 1769 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1770 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1771 F_CTL_SEQ_INITIATIVE); 1772 p = (uint8_t *)&f_ctl; 1773 resp->fcp_hdr_le.f_ctl[0] = *p++; 1774 resp->fcp_hdr_le.f_ctl[1] = *p++; 1775 resp->fcp_hdr_le.f_ctl[2] = *p; 1776 1777 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1778 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1779 1780 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1781 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1782 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1783 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1784 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1785 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1786 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1787 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1788 } else { 1789 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1790 resp->payload.ba_rjt.reason_code = 1791 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1792 /* Other bytes are zero */ 1793 } 1794 1795 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1796 1797 /* Memory Barrier */ 1798 wmb(); 1799 if (qpair->reqq_start_iocbs) 1800 qpair->reqq_start_iocbs(qpair); 1801 else 1802 qla2x00_start_iocbs(vha, qpair->req); 1803 1804 return rc; 1805 } 1806 1807 /* 1808 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1809 */ 1810 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1811 struct abts_recv_from_24xx *abts, uint32_t status, 1812 bool ids_reversed) 1813 { 1814 struct scsi_qla_host *vha = qpair->vha; 1815 struct qla_hw_data *ha = vha->hw; 1816 struct abts_resp_to_24xx *resp; 1817 uint32_t f_ctl; 1818 uint8_t *p; 1819 1820 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1821 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1822 ha, abts, status); 1823 1824 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1825 NULL); 1826 if (!resp) { 1827 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1828 "qla_target(%d): %s failed: unable to allocate " 1829 "request packet", vha->vp_idx, __func__); 1830 return; 1831 } 1832 1833 resp->entry_type = ABTS_RESP_24XX; 1834 resp->handle = QLA_TGT_SKIP_HANDLE; 1835 resp->entry_count = 1; 1836 resp->nport_handle = abts->nport_handle; 1837 resp->vp_index = vha->vp_idx; 1838 resp->sof_type = abts->sof_type; 1839 resp->exchange_address = abts->exchange_address; 1840 resp->fcp_hdr_le = abts->fcp_hdr_le; 1841 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1842 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1843 F_CTL_SEQ_INITIATIVE); 1844 p = (uint8_t *)&f_ctl; 1845 resp->fcp_hdr_le.f_ctl[0] = *p++; 1846 resp->fcp_hdr_le.f_ctl[1] = *p++; 1847 resp->fcp_hdr_le.f_ctl[2] = *p; 1848 if (ids_reversed) { 1849 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1850 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1851 } else { 1852 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1853 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1854 } 1855 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1856 if (status == FCP_TMF_CMPL) { 1857 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1858 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1859 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1860 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1861 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1862 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1863 } else { 1864 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1865 resp->payload.ba_rjt.reason_code = 1866 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1867 /* Other bytes are zero */ 1868 } 1869 1870 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1871 1872 /* Memory Barrier */ 1873 wmb(); 1874 if (qpair->reqq_start_iocbs) 1875 qpair->reqq_start_iocbs(qpair); 1876 else 1877 qla2x00_start_iocbs(vha, qpair->req); 1878 } 1879 1880 /* 1881 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1882 */ 1883 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1884 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1885 { 1886 struct ctio7_to_24xx *ctio; 1887 u16 tmp; 1888 struct abts_recv_from_24xx *entry; 1889 1890 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1891 if (ctio == NULL) { 1892 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1893 "qla_target(%d): %s failed: unable to allocate " 1894 "request packet\n", vha->vp_idx, __func__); 1895 return; 1896 } 1897 1898 if (mcmd) 1899 /* abts from remote port */ 1900 entry = &mcmd->orig_iocb.abts; 1901 else 1902 /* abts from this driver. */ 1903 entry = (struct abts_recv_from_24xx *)pkt; 1904 1905 /* 1906 * We've got on entrance firmware's response on by us generated 1907 * ABTS response. So, in it ID fields are reversed. 1908 */ 1909 1910 ctio->entry_type = CTIO_TYPE7; 1911 ctio->entry_count = 1; 1912 ctio->nport_handle = entry->nport_handle; 1913 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1914 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1915 ctio->vp_index = vha->vp_idx; 1916 ctio->exchange_addr = entry->exchange_addr_to_abort; 1917 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1918 1919 if (mcmd) { 1920 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1921 1922 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1923 tmp |= (mcmd->abort_io_attr << 9); 1924 else if (qpair->retry_term_cnt & 1) 1925 tmp |= (0x4 << 9); 1926 } else { 1927 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1928 1929 if (qpair->retry_term_cnt & 1) 1930 tmp |= (0x4 << 9); 1931 } 1932 ctio->u.status1.flags = cpu_to_le16(tmp); 1933 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1934 1935 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1936 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1937 le16_to_cpu(ctio->u.status1.flags), 1938 le16_to_cpu(ctio->u.status1.ox_id), 1939 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1940 1941 /* Memory Barrier */ 1942 wmb(); 1943 if (qpair->reqq_start_iocbs) 1944 qpair->reqq_start_iocbs(qpair); 1945 else 1946 qla2x00_start_iocbs(vha, qpair->req); 1947 1948 if (mcmd) 1949 qlt_build_abts_resp_iocb(mcmd); 1950 else 1951 qlt_24xx_send_abts_resp(qpair, 1952 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1953 1954 } 1955 1956 /* drop cmds for the given lun 1957 * XXX only looks for cmds on the port through which lun reset was recieved 1958 * XXX does not go through the list of other port (which may have cmds 1959 * for the same lun) 1960 */ 1961 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1962 { 1963 struct qla_tgt_sess_op *op; 1964 struct qla_tgt_cmd *cmd; 1965 uint32_t key; 1966 unsigned long flags; 1967 1968 key = sid_to_key(s_id); 1969 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1970 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1971 uint32_t op_key; 1972 u64 op_lun; 1973 1974 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1975 op_lun = scsilun_to_int( 1976 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1977 if (op_key == key && op_lun == lun) 1978 op->aborted = true; 1979 } 1980 1981 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1982 uint32_t op_key; 1983 u64 op_lun; 1984 1985 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1986 op_lun = scsilun_to_int( 1987 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1988 if (op_key == key && op_lun == lun) 1989 op->aborted = true; 1990 } 1991 1992 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1993 uint32_t cmd_key; 1994 u64 cmd_lun; 1995 1996 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1997 cmd_lun = scsilun_to_int( 1998 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1999 if (cmd_key == key && cmd_lun == lun) 2000 cmd->aborted = 1; 2001 } 2002 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2003 } 2004 2005 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2006 uint64_t unpacked_lun) 2007 { 2008 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2009 struct qla_qpair_hint *h = NULL; 2010 2011 if (vha->flags.qpairs_available) { 2012 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2013 if (!h) 2014 h = &tgt->qphints[0]; 2015 } else { 2016 h = &tgt->qphints[0]; 2017 } 2018 2019 return h; 2020 } 2021 2022 static void qlt_do_tmr_work(struct work_struct *work) 2023 { 2024 struct qla_tgt_mgmt_cmd *mcmd = 2025 container_of(work, struct qla_tgt_mgmt_cmd, work); 2026 struct qla_hw_data *ha = mcmd->vha->hw; 2027 int rc = EIO; 2028 uint32_t tag; 2029 unsigned long flags; 2030 2031 switch (mcmd->tmr_func) { 2032 case QLA_TGT_ABTS: 2033 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort; 2034 break; 2035 default: 2036 tag = 0; 2037 break; 2038 } 2039 2040 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2041 mcmd->tmr_func, tag); 2042 2043 if (rc != 0) { 2044 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2045 switch (mcmd->tmr_func) { 2046 case QLA_TGT_ABTS: 2047 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2048 qlt_build_abts_resp_iocb(mcmd); 2049 break; 2050 case QLA_TGT_LUN_RESET: 2051 case QLA_TGT_CLEAR_TS: 2052 case QLA_TGT_ABORT_TS: 2053 case QLA_TGT_CLEAR_ACA: 2054 case QLA_TGT_TARGET_RESET: 2055 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2056 qla_sam_status); 2057 break; 2058 2059 case QLA_TGT_ABORT_ALL: 2060 case QLA_TGT_NEXUS_LOSS_SESS: 2061 case QLA_TGT_NEXUS_LOSS: 2062 qlt_send_notify_ack(mcmd->qpair, 2063 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2064 break; 2065 } 2066 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2067 2068 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2069 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2070 mcmd->vha->vp_idx, rc); 2071 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2072 } 2073 } 2074 2075 /* ha->hardware_lock supposed to be held on entry */ 2076 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2077 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2078 { 2079 struct qla_hw_data *ha = vha->hw; 2080 struct qla_tgt_mgmt_cmd *mcmd; 2081 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2082 2083 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2084 "qla_target(%d): task abort (tag=%d)\n", 2085 vha->vp_idx, abts->exchange_addr_to_abort); 2086 2087 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2088 if (mcmd == NULL) { 2089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2090 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2091 vha->vp_idx, __func__); 2092 return -ENOMEM; 2093 } 2094 memset(mcmd, 0, sizeof(*mcmd)); 2095 mcmd->cmd_type = TYPE_TGT_TMCMD; 2096 mcmd->sess = sess; 2097 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2098 mcmd->reset_count = ha->base_qpair->chip_reset; 2099 mcmd->tmr_func = QLA_TGT_ABTS; 2100 mcmd->qpair = h->qpair; 2101 mcmd->vha = vha; 2102 2103 /* 2104 * LUN is looked up by target-core internally based on the passed 2105 * abts->exchange_addr_to_abort tag. 2106 */ 2107 mcmd->se_cmd.cpuid = h->cpuid; 2108 2109 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2110 struct qla_tgt_cmd *abort_cmd; 2111 2112 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2113 abts->exchange_addr_to_abort); 2114 if (abort_cmd && abort_cmd->qpair) { 2115 mcmd->qpair = abort_cmd->qpair; 2116 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2117 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2118 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2119 } 2120 } 2121 2122 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2123 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2124 2125 return 0; 2126 } 2127 2128 /* 2129 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2130 */ 2131 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2132 struct abts_recv_from_24xx *abts) 2133 { 2134 struct qla_hw_data *ha = vha->hw; 2135 struct fc_port *sess; 2136 uint32_t tag = abts->exchange_addr_to_abort; 2137 be_id_t s_id; 2138 int rc; 2139 unsigned long flags; 2140 2141 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2143 "qla_target(%d): ABTS: Abort Sequence not " 2144 "supported\n", vha->vp_idx); 2145 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2146 false); 2147 return; 2148 } 2149 2150 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2151 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2152 "qla_target(%d): ABTS: Unknown Exchange " 2153 "Address received\n", vha->vp_idx); 2154 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2155 false); 2156 return; 2157 } 2158 2159 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2160 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2161 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2162 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2163 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2164 2165 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2166 2167 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2168 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2169 if (!sess) { 2170 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2171 "qla_target(%d): task abort for non-existent session\n", 2172 vha->vp_idx); 2173 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2174 2175 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2176 false); 2177 return; 2178 } 2179 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2180 2181 2182 if (sess->deleted) { 2183 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2184 false); 2185 return; 2186 } 2187 2188 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2189 if (rc != 0) { 2190 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2191 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2192 vha->vp_idx, rc); 2193 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2194 false); 2195 return; 2196 } 2197 } 2198 2199 /* 2200 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2201 */ 2202 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2203 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2204 { 2205 struct scsi_qla_host *ha = mcmd->vha; 2206 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2207 struct ctio7_to_24xx *ctio; 2208 uint16_t temp; 2209 2210 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2211 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2212 ha, atio, resp_code); 2213 2214 2215 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2216 if (ctio == NULL) { 2217 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2218 "qla_target(%d): %s failed: unable to allocate " 2219 "request packet\n", ha->vp_idx, __func__); 2220 return; 2221 } 2222 2223 ctio->entry_type = CTIO_TYPE7; 2224 ctio->entry_count = 1; 2225 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2226 ctio->nport_handle = mcmd->sess->loop_id; 2227 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2228 ctio->vp_index = ha->vp_idx; 2229 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2230 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2231 temp = (atio->u.isp24.attr << 9)| 2232 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2233 ctio->u.status1.flags = cpu_to_le16(temp); 2234 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2235 ctio->u.status1.ox_id = cpu_to_le16(temp); 2236 ctio->u.status1.scsi_status = 2237 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2238 ctio->u.status1.response_len = cpu_to_le16(8); 2239 ctio->u.status1.sense_data[0] = resp_code; 2240 2241 /* Memory Barrier */ 2242 wmb(); 2243 if (qpair->reqq_start_iocbs) 2244 qpair->reqq_start_iocbs(qpair); 2245 else 2246 qla2x00_start_iocbs(ha, qpair->req); 2247 } 2248 2249 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2250 { 2251 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2252 } 2253 EXPORT_SYMBOL(qlt_free_mcmd); 2254 2255 /* 2256 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2257 * reacquire 2258 */ 2259 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2260 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2261 { 2262 struct atio_from_isp *atio = &cmd->atio; 2263 struct ctio7_to_24xx *ctio; 2264 uint16_t temp; 2265 struct scsi_qla_host *vha = cmd->vha; 2266 2267 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2268 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2269 "sense_key=%02x, asc=%02x, ascq=%02x", 2270 vha, atio, scsi_status, sense_key, asc, ascq); 2271 2272 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2273 if (!ctio) { 2274 ql_dbg(ql_dbg_async, vha, 0x3067, 2275 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2276 vha->host_no, __func__); 2277 goto out; 2278 } 2279 2280 ctio->entry_type = CTIO_TYPE7; 2281 ctio->entry_count = 1; 2282 ctio->handle = QLA_TGT_SKIP_HANDLE; 2283 ctio->nport_handle = cmd->sess->loop_id; 2284 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2285 ctio->vp_index = vha->vp_idx; 2286 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2287 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2288 temp = (atio->u.isp24.attr << 9) | 2289 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2290 ctio->u.status1.flags = cpu_to_le16(temp); 2291 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2292 ctio->u.status1.ox_id = cpu_to_le16(temp); 2293 ctio->u.status1.scsi_status = 2294 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2295 ctio->u.status1.response_len = cpu_to_le16(18); 2296 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2297 2298 if (ctio->u.status1.residual != 0) 2299 ctio->u.status1.scsi_status |= 2300 cpu_to_le16(SS_RESIDUAL_UNDER); 2301 2302 /* Fixed format sense data. */ 2303 ctio->u.status1.sense_data[0] = 0x70; 2304 ctio->u.status1.sense_data[2] = sense_key; 2305 /* Additional sense length */ 2306 ctio->u.status1.sense_data[7] = 0xa; 2307 /* ASC and ASCQ */ 2308 ctio->u.status1.sense_data[12] = asc; 2309 ctio->u.status1.sense_data[13] = ascq; 2310 2311 /* Memory Barrier */ 2312 wmb(); 2313 2314 if (qpair->reqq_start_iocbs) 2315 qpair->reqq_start_iocbs(qpair); 2316 else 2317 qla2x00_start_iocbs(vha, qpair->req); 2318 2319 out: 2320 return; 2321 } 2322 2323 /* callback from target fabric module code */ 2324 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2325 { 2326 struct scsi_qla_host *vha = mcmd->sess->vha; 2327 struct qla_hw_data *ha = vha->hw; 2328 unsigned long flags; 2329 struct qla_qpair *qpair = mcmd->qpair; 2330 bool free_mcmd = true; 2331 2332 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2333 "TM response mcmd (%p) status %#x state %#x", 2334 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2335 2336 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2337 2338 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2339 /* 2340 * Either the port is not online or this request was from 2341 * previous life, just abort the processing. 2342 */ 2343 ql_dbg(ql_dbg_async, vha, 0xe100, 2344 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2345 vha->flags.online, qla2x00_reset_active(vha), 2346 mcmd->reset_count, qpair->chip_reset); 2347 ha->tgt.tgt_ops->free_mcmd(mcmd); 2348 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2349 return; 2350 } 2351 2352 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2353 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2354 case ELS_LOGO: 2355 case ELS_PRLO: 2356 case ELS_TPRLO: 2357 ql_dbg(ql_dbg_disc, vha, 0x2106, 2358 "TM response logo %8phC status %#x state %#x", 2359 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2360 mcmd->flags); 2361 qlt_schedule_sess_for_deletion(mcmd->sess); 2362 break; 2363 default: 2364 qlt_send_notify_ack(vha->hw->base_qpair, 2365 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2366 break; 2367 } 2368 } else { 2369 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2370 qlt_build_abts_resp_iocb(mcmd); 2371 free_mcmd = false; 2372 } else 2373 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2374 mcmd->fc_tm_rsp); 2375 } 2376 /* 2377 * Make the callback for ->free_mcmd() to queue_work() and invoke 2378 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2379 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2380 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2381 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2382 * qlt_xmit_tm_rsp() returns here.. 2383 */ 2384 if (free_mcmd) 2385 ha->tgt.tgt_ops->free_mcmd(mcmd); 2386 2387 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2388 } 2389 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2390 2391 /* No locks */ 2392 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2393 { 2394 struct qla_tgt_cmd *cmd = prm->cmd; 2395 2396 BUG_ON(cmd->sg_cnt == 0); 2397 2398 prm->sg = (struct scatterlist *)cmd->sg; 2399 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2400 cmd->sg_cnt, cmd->dma_data_direction); 2401 if (unlikely(prm->seg_cnt == 0)) 2402 goto out_err; 2403 2404 prm->cmd->sg_mapped = 1; 2405 2406 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2407 /* 2408 * If greater than four sg entries then we need to allocate 2409 * the continuation entries 2410 */ 2411 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2412 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2413 QLA_TGT_DATASEGS_PER_CMD_24XX, 2414 QLA_TGT_DATASEGS_PER_CONT_24XX); 2415 } else { 2416 /* DIF */ 2417 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2418 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2419 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2420 prm->tot_dsds = prm->seg_cnt; 2421 } else 2422 prm->tot_dsds = prm->seg_cnt; 2423 2424 if (cmd->prot_sg_cnt) { 2425 prm->prot_sg = cmd->prot_sg; 2426 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2427 cmd->prot_sg, cmd->prot_sg_cnt, 2428 cmd->dma_data_direction); 2429 if (unlikely(prm->prot_seg_cnt == 0)) 2430 goto out_err; 2431 2432 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2433 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2434 /* Dif Bundling not support here */ 2435 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2436 cmd->blk_sz); 2437 prm->tot_dsds += prm->prot_seg_cnt; 2438 } else 2439 prm->tot_dsds += prm->prot_seg_cnt; 2440 } 2441 } 2442 2443 return 0; 2444 2445 out_err: 2446 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2447 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2448 0, prm->cmd->sg_cnt); 2449 return -1; 2450 } 2451 2452 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2453 { 2454 struct qla_hw_data *ha; 2455 struct qla_qpair *qpair; 2456 2457 if (!cmd->sg_mapped) 2458 return; 2459 2460 qpair = cmd->qpair; 2461 2462 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2463 cmd->dma_data_direction); 2464 cmd->sg_mapped = 0; 2465 2466 if (cmd->prot_sg_cnt) 2467 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2468 cmd->dma_data_direction); 2469 2470 if (!cmd->ctx) 2471 return; 2472 ha = vha->hw; 2473 if (cmd->ctx_dsd_alloced) 2474 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2475 2476 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2477 } 2478 2479 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2480 uint32_t req_cnt) 2481 { 2482 uint32_t cnt; 2483 struct req_que *req = qpair->req; 2484 2485 if (req->cnt < (req_cnt + 2)) { 2486 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2487 RD_REG_DWORD_RELAXED(req->req_q_out)); 2488 2489 if (req->ring_index < cnt) 2490 req->cnt = cnt - req->ring_index; 2491 else 2492 req->cnt = req->length - (req->ring_index - cnt); 2493 2494 if (unlikely(req->cnt < (req_cnt + 2))) 2495 return -EAGAIN; 2496 } 2497 2498 req->cnt -= req_cnt; 2499 2500 return 0; 2501 } 2502 2503 /* 2504 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2505 */ 2506 static inline void *qlt_get_req_pkt(struct req_que *req) 2507 { 2508 /* Adjust ring index. */ 2509 req->ring_index++; 2510 if (req->ring_index == req->length) { 2511 req->ring_index = 0; 2512 req->ring_ptr = req->ring; 2513 } else { 2514 req->ring_ptr++; 2515 } 2516 return (cont_entry_t *)req->ring_ptr; 2517 } 2518 2519 /* ha->hardware_lock supposed to be held on entry */ 2520 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2521 { 2522 uint32_t h; 2523 int index; 2524 uint8_t found = 0; 2525 struct req_que *req = qpair->req; 2526 2527 h = req->current_outstanding_cmd; 2528 2529 for (index = 1; index < req->num_outstanding_cmds; index++) { 2530 h++; 2531 if (h == req->num_outstanding_cmds) 2532 h = 1; 2533 2534 if (h == QLA_TGT_SKIP_HANDLE) 2535 continue; 2536 2537 if (!req->outstanding_cmds[h]) { 2538 found = 1; 2539 break; 2540 } 2541 } 2542 2543 if (found) { 2544 req->current_outstanding_cmd = h; 2545 } else { 2546 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2547 "qla_target(%d): Ran out of empty cmd slots\n", 2548 qpair->vha->vp_idx); 2549 h = QLA_TGT_NULL_HANDLE; 2550 } 2551 2552 return h; 2553 } 2554 2555 /* ha->hardware_lock supposed to be held on entry */ 2556 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2557 struct qla_tgt_prm *prm) 2558 { 2559 uint32_t h; 2560 struct ctio7_to_24xx *pkt; 2561 struct atio_from_isp *atio = &prm->cmd->atio; 2562 uint16_t temp; 2563 2564 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2565 prm->pkt = pkt; 2566 memset(pkt, 0, sizeof(*pkt)); 2567 2568 pkt->entry_type = CTIO_TYPE7; 2569 pkt->entry_count = (uint8_t)prm->req_cnt; 2570 pkt->vp_index = prm->cmd->vp_idx; 2571 2572 h = qlt_make_handle(qpair); 2573 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2574 /* 2575 * CTIO type 7 from the firmware doesn't provide a way to 2576 * know the initiator's LOOP ID, hence we can't find 2577 * the session and, so, the command. 2578 */ 2579 return -EAGAIN; 2580 } else 2581 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2582 2583 pkt->handle = make_handle(qpair->req->id, h); 2584 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2585 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2586 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2587 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2588 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2589 temp = atio->u.isp24.attr << 9; 2590 pkt->u.status0.flags |= cpu_to_le16(temp); 2591 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2592 pkt->u.status0.ox_id = cpu_to_le16(temp); 2593 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2594 2595 return 0; 2596 } 2597 2598 /* 2599 * ha->hardware_lock supposed to be held on entry. We have already made sure 2600 * that there is sufficient amount of request entries to not drop it. 2601 */ 2602 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2603 { 2604 int cnt; 2605 struct dsd64 *cur_dsd; 2606 2607 /* Build continuation packets */ 2608 while (prm->seg_cnt > 0) { 2609 cont_a64_entry_t *cont_pkt64 = 2610 (cont_a64_entry_t *)qlt_get_req_pkt( 2611 prm->cmd->qpair->req); 2612 2613 /* 2614 * Make sure that from cont_pkt64 none of 2615 * 64-bit specific fields used for 32-bit 2616 * addressing. Cast to (cont_entry_t *) for 2617 * that. 2618 */ 2619 2620 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2621 2622 cont_pkt64->entry_count = 1; 2623 cont_pkt64->sys_define = 0; 2624 2625 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2626 cur_dsd = cont_pkt64->dsd; 2627 2628 /* Load continuation entry data segments */ 2629 for (cnt = 0; 2630 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2631 cnt++, prm->seg_cnt--) { 2632 append_dsd64(&cur_dsd, prm->sg); 2633 prm->sg = sg_next(prm->sg); 2634 } 2635 } 2636 } 2637 2638 /* 2639 * ha->hardware_lock supposed to be held on entry. We have already made sure 2640 * that there is sufficient amount of request entries to not drop it. 2641 */ 2642 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2643 { 2644 int cnt; 2645 struct dsd64 *cur_dsd; 2646 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2647 2648 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2649 2650 /* Setup packet address segment pointer */ 2651 cur_dsd = &pkt24->u.status0.dsd; 2652 2653 /* Set total data segment count */ 2654 if (prm->seg_cnt) 2655 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2656 2657 if (prm->seg_cnt == 0) { 2658 /* No data transfer */ 2659 cur_dsd->address = 0; 2660 cur_dsd->length = 0; 2661 return; 2662 } 2663 2664 /* If scatter gather */ 2665 2666 /* Load command entry data segments */ 2667 for (cnt = 0; 2668 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2669 cnt++, prm->seg_cnt--) { 2670 append_dsd64(&cur_dsd, prm->sg); 2671 prm->sg = sg_next(prm->sg); 2672 } 2673 2674 qlt_load_cont_data_segments(prm); 2675 } 2676 2677 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2678 { 2679 return cmd->bufflen > 0; 2680 } 2681 2682 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2683 { 2684 struct qla_tgt_cmd *cmd; 2685 struct scsi_qla_host *vha; 2686 2687 /* asc 0x10=dif error */ 2688 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2689 cmd = prm->cmd; 2690 vha = cmd->vha; 2691 /* ASCQ */ 2692 switch (prm->sense_buffer[13]) { 2693 case 1: 2694 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2695 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2696 "se_cmd=%p tag[%x]", 2697 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2698 cmd->atio.u.isp24.exchange_addr); 2699 break; 2700 case 2: 2701 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2702 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2703 "se_cmd=%p tag[%x]", 2704 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2705 cmd->atio.u.isp24.exchange_addr); 2706 break; 2707 case 3: 2708 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2709 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2710 "se_cmd=%p tag[%x]", 2711 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2712 cmd->atio.u.isp24.exchange_addr); 2713 break; 2714 default: 2715 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2716 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2717 "se_cmd=%p tag[%x]", 2718 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2719 cmd->atio.u.isp24.exchange_addr); 2720 break; 2721 } 2722 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2723 } 2724 } 2725 2726 /* 2727 * Called without ha->hardware_lock held 2728 */ 2729 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2730 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2731 uint32_t *full_req_cnt) 2732 { 2733 struct se_cmd *se_cmd = &cmd->se_cmd; 2734 struct qla_qpair *qpair = cmd->qpair; 2735 2736 prm->cmd = cmd; 2737 prm->tgt = cmd->tgt; 2738 prm->pkt = NULL; 2739 prm->rq_result = scsi_status; 2740 prm->sense_buffer = &cmd->sense_buffer[0]; 2741 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2742 prm->sg = NULL; 2743 prm->seg_cnt = -1; 2744 prm->req_cnt = 1; 2745 prm->residual = 0; 2746 prm->add_status_pkt = 0; 2747 prm->prot_sg = NULL; 2748 prm->prot_seg_cnt = 0; 2749 prm->tot_dsds = 0; 2750 2751 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2752 if (qlt_pci_map_calc_cnt(prm) != 0) 2753 return -EAGAIN; 2754 } 2755 2756 *full_req_cnt = prm->req_cnt; 2757 2758 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2759 prm->residual = se_cmd->residual_count; 2760 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2761 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2762 prm->residual, se_cmd->tag, 2763 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2764 cmd->bufflen, prm->rq_result); 2765 prm->rq_result |= SS_RESIDUAL_UNDER; 2766 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2767 prm->residual = se_cmd->residual_count; 2768 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2769 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2770 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2771 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2772 prm->rq_result |= SS_RESIDUAL_OVER; 2773 } 2774 2775 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2776 /* 2777 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2778 * ignored in *xmit_response() below 2779 */ 2780 if (qlt_has_data(cmd)) { 2781 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2782 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2783 (prm->rq_result != 0))) { 2784 prm->add_status_pkt = 1; 2785 (*full_req_cnt)++; 2786 } 2787 } 2788 } 2789 2790 return 0; 2791 } 2792 2793 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2794 int sending_sense) 2795 { 2796 if (cmd->qpair->enable_class_2) 2797 return 0; 2798 2799 if (sending_sense) 2800 return cmd->conf_compl_supported; 2801 else 2802 return cmd->qpair->enable_explicit_conf && 2803 cmd->conf_compl_supported; 2804 } 2805 2806 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2807 struct qla_tgt_prm *prm) 2808 { 2809 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2810 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2811 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2812 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2813 ctio->u.status0.flags |= cpu_to_le16( 2814 CTIO7_FLAGS_EXPLICIT_CONFORM | 2815 CTIO7_FLAGS_CONFORM_REQ); 2816 } 2817 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2818 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2819 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2820 int i; 2821 2822 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2823 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2824 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2825 "Skipping EXPLICIT_CONFORM and " 2826 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2827 "non GOOD status\n"); 2828 goto skip_explict_conf; 2829 } 2830 ctio->u.status1.flags |= cpu_to_le16( 2831 CTIO7_FLAGS_EXPLICIT_CONFORM | 2832 CTIO7_FLAGS_CONFORM_REQ); 2833 } 2834 skip_explict_conf: 2835 ctio->u.status1.flags &= 2836 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2837 ctio->u.status1.flags |= 2838 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2839 ctio->u.status1.scsi_status |= 2840 cpu_to_le16(SS_SENSE_LEN_VALID); 2841 ctio->u.status1.sense_length = 2842 cpu_to_le16(prm->sense_buffer_len); 2843 for (i = 0; i < prm->sense_buffer_len/4; i++) 2844 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2845 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2846 2847 qlt_print_dif_err(prm); 2848 2849 } else { 2850 ctio->u.status1.flags &= 2851 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2852 ctio->u.status1.flags |= 2853 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2854 ctio->u.status1.sense_length = 0; 2855 memset(ctio->u.status1.sense_data, 0, 2856 sizeof(ctio->u.status1.sense_data)); 2857 } 2858 2859 /* Sense with len > 24, is it possible ??? */ 2860 } 2861 2862 static inline int 2863 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2864 { 2865 switch (se_cmd->prot_op) { 2866 case TARGET_PROT_DOUT_INSERT: 2867 case TARGET_PROT_DIN_STRIP: 2868 if (ql2xenablehba_err_chk >= 1) 2869 return 1; 2870 break; 2871 case TARGET_PROT_DOUT_PASS: 2872 case TARGET_PROT_DIN_PASS: 2873 if (ql2xenablehba_err_chk >= 2) 2874 return 1; 2875 break; 2876 case TARGET_PROT_DIN_INSERT: 2877 case TARGET_PROT_DOUT_STRIP: 2878 return 1; 2879 default: 2880 break; 2881 } 2882 return 0; 2883 } 2884 2885 static inline int 2886 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2887 { 2888 switch (se_cmd->prot_op) { 2889 case TARGET_PROT_DIN_INSERT: 2890 case TARGET_PROT_DOUT_INSERT: 2891 case TARGET_PROT_DIN_STRIP: 2892 case TARGET_PROT_DOUT_STRIP: 2893 case TARGET_PROT_DIN_PASS: 2894 case TARGET_PROT_DOUT_PASS: 2895 return 1; 2896 default: 2897 return 0; 2898 } 2899 return 0; 2900 } 2901 2902 /* 2903 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2904 */ 2905 static void 2906 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2907 uint16_t *pfw_prot_opts) 2908 { 2909 struct se_cmd *se_cmd = &cmd->se_cmd; 2910 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2911 scsi_qla_host_t *vha = cmd->tgt->vha; 2912 struct qla_hw_data *ha = vha->hw; 2913 uint32_t t32 = 0; 2914 2915 /* 2916 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2917 * have been immplemented by TCM, before AppTag is avail. 2918 * Look for modesense_handlers[] 2919 */ 2920 ctx->app_tag = 0; 2921 ctx->app_tag_mask[0] = 0x0; 2922 ctx->app_tag_mask[1] = 0x0; 2923 2924 if (IS_PI_UNINIT_CAPABLE(ha)) { 2925 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2926 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2927 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2928 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2929 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2930 } 2931 2932 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2933 2934 switch (se_cmd->prot_type) { 2935 case TARGET_DIF_TYPE0_PROT: 2936 /* 2937 * No check for ql2xenablehba_err_chk, as it 2938 * would be an I/O error if hba tag generation 2939 * is not done. 2940 */ 2941 ctx->ref_tag = cpu_to_le32(lba); 2942 /* enable ALL bytes of the ref tag */ 2943 ctx->ref_tag_mask[0] = 0xff; 2944 ctx->ref_tag_mask[1] = 0xff; 2945 ctx->ref_tag_mask[2] = 0xff; 2946 ctx->ref_tag_mask[3] = 0xff; 2947 break; 2948 case TARGET_DIF_TYPE1_PROT: 2949 /* 2950 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2951 * REF tag, and 16 bit app tag. 2952 */ 2953 ctx->ref_tag = cpu_to_le32(lba); 2954 if (!qla_tgt_ref_mask_check(se_cmd) || 2955 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2956 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2957 break; 2958 } 2959 /* enable ALL bytes of the ref tag */ 2960 ctx->ref_tag_mask[0] = 0xff; 2961 ctx->ref_tag_mask[1] = 0xff; 2962 ctx->ref_tag_mask[2] = 0xff; 2963 ctx->ref_tag_mask[3] = 0xff; 2964 break; 2965 case TARGET_DIF_TYPE2_PROT: 2966 /* 2967 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2968 * tag has to match LBA in CDB + N 2969 */ 2970 ctx->ref_tag = cpu_to_le32(lba); 2971 if (!qla_tgt_ref_mask_check(se_cmd) || 2972 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2973 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2974 break; 2975 } 2976 /* enable ALL bytes of the ref tag */ 2977 ctx->ref_tag_mask[0] = 0xff; 2978 ctx->ref_tag_mask[1] = 0xff; 2979 ctx->ref_tag_mask[2] = 0xff; 2980 ctx->ref_tag_mask[3] = 0xff; 2981 break; 2982 case TARGET_DIF_TYPE3_PROT: 2983 /* For TYPE 3 protection: 16 bit GUARD only */ 2984 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2985 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2986 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2987 break; 2988 } 2989 } 2990 2991 static inline int 2992 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2993 { 2994 struct dsd64 *cur_dsd; 2995 uint32_t transfer_length = 0; 2996 uint32_t data_bytes; 2997 uint32_t dif_bytes; 2998 uint8_t bundling = 1; 2999 struct crc_context *crc_ctx_pkt = NULL; 3000 struct qla_hw_data *ha; 3001 struct ctio_crc2_to_fw *pkt; 3002 dma_addr_t crc_ctx_dma; 3003 uint16_t fw_prot_opts = 0; 3004 struct qla_tgt_cmd *cmd = prm->cmd; 3005 struct se_cmd *se_cmd = &cmd->se_cmd; 3006 uint32_t h; 3007 struct atio_from_isp *atio = &prm->cmd->atio; 3008 struct qla_tc_param tc; 3009 uint16_t t16; 3010 scsi_qla_host_t *vha = cmd->vha; 3011 3012 ha = vha->hw; 3013 3014 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3015 prm->pkt = pkt; 3016 memset(pkt, 0, sizeof(*pkt)); 3017 3018 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3019 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3020 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3021 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3022 3023 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3024 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3025 bundling = 0; 3026 3027 /* Compute dif len and adjust data len to incude protection */ 3028 data_bytes = cmd->bufflen; 3029 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3030 3031 switch (se_cmd->prot_op) { 3032 case TARGET_PROT_DIN_INSERT: 3033 case TARGET_PROT_DOUT_STRIP: 3034 transfer_length = data_bytes; 3035 if (cmd->prot_sg_cnt) 3036 data_bytes += dif_bytes; 3037 break; 3038 case TARGET_PROT_DIN_STRIP: 3039 case TARGET_PROT_DOUT_INSERT: 3040 case TARGET_PROT_DIN_PASS: 3041 case TARGET_PROT_DOUT_PASS: 3042 transfer_length = data_bytes + dif_bytes; 3043 break; 3044 default: 3045 BUG(); 3046 break; 3047 } 3048 3049 if (!qlt_hba_err_chk_enabled(se_cmd)) 3050 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3051 /* HBA error checking enabled */ 3052 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3053 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3054 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3055 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3056 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3057 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3058 } 3059 3060 switch (se_cmd->prot_op) { 3061 case TARGET_PROT_DIN_INSERT: 3062 case TARGET_PROT_DOUT_INSERT: 3063 fw_prot_opts |= PO_MODE_DIF_INSERT; 3064 break; 3065 case TARGET_PROT_DIN_STRIP: 3066 case TARGET_PROT_DOUT_STRIP: 3067 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3068 break; 3069 case TARGET_PROT_DIN_PASS: 3070 case TARGET_PROT_DOUT_PASS: 3071 fw_prot_opts |= PO_MODE_DIF_PASS; 3072 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3073 break; 3074 default:/* Normal Request */ 3075 fw_prot_opts |= PO_MODE_DIF_PASS; 3076 break; 3077 } 3078 3079 /* ---- PKT ---- */ 3080 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3081 pkt->entry_type = CTIO_CRC2; 3082 pkt->entry_count = 1; 3083 pkt->vp_index = cmd->vp_idx; 3084 3085 h = qlt_make_handle(qpair); 3086 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3087 /* 3088 * CTIO type 7 from the firmware doesn't provide a way to 3089 * know the initiator's LOOP ID, hence we can't find 3090 * the session and, so, the command. 3091 */ 3092 return -EAGAIN; 3093 } else 3094 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3095 3096 pkt->handle = make_handle(qpair->req->id, h); 3097 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3098 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3099 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3100 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3101 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3102 3103 /* silence compile warning */ 3104 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3105 pkt->ox_id = cpu_to_le16(t16); 3106 3107 t16 = (atio->u.isp24.attr << 9); 3108 pkt->flags |= cpu_to_le16(t16); 3109 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3110 3111 /* Set transfer direction */ 3112 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3113 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3114 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3115 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3116 3117 pkt->dseg_count = prm->tot_dsds; 3118 /* Fibre channel byte count */ 3119 pkt->transfer_length = cpu_to_le32(transfer_length); 3120 3121 /* ----- CRC context -------- */ 3122 3123 /* Allocate CRC context from global pool */ 3124 crc_ctx_pkt = cmd->ctx = 3125 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3126 3127 if (!crc_ctx_pkt) 3128 goto crc_queuing_error; 3129 3130 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3131 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3132 3133 /* Set handle */ 3134 crc_ctx_pkt->handle = pkt->handle; 3135 3136 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3137 3138 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3139 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3140 3141 if (!bundling) { 3142 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3143 } else { 3144 /* 3145 * Configure Bundling if we need to fetch interlaving 3146 * protection PCI accesses 3147 */ 3148 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3149 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3150 crc_ctx_pkt->u.bundling.dseg_count = 3151 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3152 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3153 } 3154 3155 /* Finish the common fields of CRC pkt */ 3156 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3157 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3158 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3159 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3160 3161 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3162 tc.vha = vha; 3163 tc.blk_sz = cmd->blk_sz; 3164 tc.bufflen = cmd->bufflen; 3165 tc.sg = cmd->sg; 3166 tc.prot_sg = cmd->prot_sg; 3167 tc.ctx = crc_ctx_pkt; 3168 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3169 3170 /* Walks data segments */ 3171 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3172 3173 if (!bundling && prm->prot_seg_cnt) { 3174 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3175 prm->tot_dsds, &tc)) 3176 goto crc_queuing_error; 3177 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3178 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3179 goto crc_queuing_error; 3180 3181 if (bundling && prm->prot_seg_cnt) { 3182 /* Walks dif segments */ 3183 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3184 3185 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3186 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3187 prm->prot_seg_cnt, cmd)) 3188 goto crc_queuing_error; 3189 } 3190 return QLA_SUCCESS; 3191 3192 crc_queuing_error: 3193 /* Cleanup will be performed by the caller */ 3194 qpair->req->outstanding_cmds[h] = NULL; 3195 3196 return QLA_FUNCTION_FAILED; 3197 } 3198 3199 /* 3200 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3201 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3202 */ 3203 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3204 uint8_t scsi_status) 3205 { 3206 struct scsi_qla_host *vha = cmd->vha; 3207 struct qla_qpair *qpair = cmd->qpair; 3208 struct ctio7_to_24xx *pkt; 3209 struct qla_tgt_prm prm; 3210 uint32_t full_req_cnt = 0; 3211 unsigned long flags = 0; 3212 int res; 3213 3214 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3215 (cmd->sess && cmd->sess->deleted)) { 3216 cmd->state = QLA_TGT_STATE_PROCESSED; 3217 res = 0; 3218 goto free; 3219 } 3220 3221 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3222 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3223 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3224 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3225 &cmd->se_cmd, qpair->id); 3226 3227 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3228 &full_req_cnt); 3229 if (unlikely(res != 0)) 3230 goto free; 3231 3232 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3233 3234 if (xmit_type == QLA_TGT_XMIT_STATUS) 3235 qpair->tgt_counters.core_qla_snd_status++; 3236 else 3237 qpair->tgt_counters.core_qla_que_buf++; 3238 3239 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3240 /* 3241 * Either the port is not online or this request was from 3242 * previous life, just abort the processing. 3243 */ 3244 cmd->state = QLA_TGT_STATE_PROCESSED; 3245 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3246 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3247 vha->flags.online, qla2x00_reset_active(vha), 3248 cmd->reset_count, qpair->chip_reset); 3249 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3250 res = 0; 3251 goto free; 3252 } 3253 3254 /* Does F/W have an IOCBs for this request */ 3255 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3256 if (unlikely(res)) 3257 goto out_unmap_unlock; 3258 3259 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3260 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3261 else 3262 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3263 if (unlikely(res != 0)) { 3264 qpair->req->cnt += full_req_cnt; 3265 goto out_unmap_unlock; 3266 } 3267 3268 pkt = (struct ctio7_to_24xx *)prm.pkt; 3269 3270 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3271 pkt->u.status0.flags |= 3272 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3273 CTIO7_FLAGS_STATUS_MODE_0); 3274 3275 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3276 qlt_load_data_segments(&prm); 3277 3278 if (prm.add_status_pkt == 0) { 3279 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3280 pkt->u.status0.scsi_status = 3281 cpu_to_le16(prm.rq_result); 3282 pkt->u.status0.residual = 3283 cpu_to_le32(prm.residual); 3284 pkt->u.status0.flags |= cpu_to_le16( 3285 CTIO7_FLAGS_SEND_STATUS); 3286 if (qlt_need_explicit_conf(cmd, 0)) { 3287 pkt->u.status0.flags |= 3288 cpu_to_le16( 3289 CTIO7_FLAGS_EXPLICIT_CONFORM | 3290 CTIO7_FLAGS_CONFORM_REQ); 3291 } 3292 } 3293 3294 } else { 3295 /* 3296 * We have already made sure that there is sufficient 3297 * amount of request entries to not drop HW lock in 3298 * req_pkt(). 3299 */ 3300 struct ctio7_to_24xx *ctio = 3301 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3302 qpair->req); 3303 3304 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3305 "Building additional status packet 0x%p.\n", 3306 ctio); 3307 3308 /* 3309 * T10Dif: ctio_crc2_to_fw overlay ontop of 3310 * ctio7_to_24xx 3311 */ 3312 memcpy(ctio, pkt, sizeof(*ctio)); 3313 /* reset back to CTIO7 */ 3314 ctio->entry_count = 1; 3315 ctio->entry_type = CTIO_TYPE7; 3316 ctio->dseg_count = 0; 3317 ctio->u.status1.flags &= ~cpu_to_le16( 3318 CTIO7_FLAGS_DATA_IN); 3319 3320 /* Real finish is ctio_m1's finish */ 3321 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3322 pkt->u.status0.flags |= cpu_to_le16( 3323 CTIO7_FLAGS_DONT_RET_CTIO); 3324 3325 /* qlt_24xx_init_ctio_to_isp will correct 3326 * all neccessary fields that's part of CTIO7. 3327 * There should be no residual of CTIO-CRC2 data. 3328 */ 3329 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3330 &prm); 3331 } 3332 } else 3333 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3334 3335 3336 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3337 cmd->cmd_sent_to_fw = 1; 3338 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3339 3340 /* Memory Barrier */ 3341 wmb(); 3342 if (qpair->reqq_start_iocbs) 3343 qpair->reqq_start_iocbs(qpair); 3344 else 3345 qla2x00_start_iocbs(vha, qpair->req); 3346 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3347 3348 return 0; 3349 3350 out_unmap_unlock: 3351 qlt_unmap_sg(vha, cmd); 3352 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3353 3354 free: 3355 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3356 return res; 3357 } 3358 EXPORT_SYMBOL(qlt_xmit_response); 3359 3360 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3361 { 3362 struct ctio7_to_24xx *pkt; 3363 struct scsi_qla_host *vha = cmd->vha; 3364 struct qla_tgt *tgt = cmd->tgt; 3365 struct qla_tgt_prm prm; 3366 unsigned long flags = 0; 3367 int res = 0; 3368 struct qla_qpair *qpair = cmd->qpair; 3369 3370 memset(&prm, 0, sizeof(prm)); 3371 prm.cmd = cmd; 3372 prm.tgt = tgt; 3373 prm.sg = NULL; 3374 prm.req_cnt = 1; 3375 3376 /* Calculate number of entries and segments required */ 3377 if (qlt_pci_map_calc_cnt(&prm) != 0) 3378 return -EAGAIN; 3379 3380 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3381 (cmd->sess && cmd->sess->deleted)) { 3382 /* 3383 * Either the port is not online or this request was from 3384 * previous life, just abort the processing. 3385 */ 3386 cmd->aborted = 1; 3387 cmd->write_data_transferred = 0; 3388 cmd->state = QLA_TGT_STATE_DATA_IN; 3389 vha->hw->tgt.tgt_ops->handle_data(cmd); 3390 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3391 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3392 vha->flags.online, qla2x00_reset_active(vha), 3393 cmd->reset_count, qpair->chip_reset); 3394 return 0; 3395 } 3396 3397 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3398 /* Does F/W have an IOCBs for this request */ 3399 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3400 if (res != 0) 3401 goto out_unlock_free_unmap; 3402 if (cmd->se_cmd.prot_op) 3403 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3404 else 3405 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3406 3407 if (unlikely(res != 0)) { 3408 qpair->req->cnt += prm.req_cnt; 3409 goto out_unlock_free_unmap; 3410 } 3411 3412 pkt = (struct ctio7_to_24xx *)prm.pkt; 3413 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3414 CTIO7_FLAGS_STATUS_MODE_0); 3415 3416 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3417 qlt_load_data_segments(&prm); 3418 3419 cmd->state = QLA_TGT_STATE_NEED_DATA; 3420 cmd->cmd_sent_to_fw = 1; 3421 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3422 3423 /* Memory Barrier */ 3424 wmb(); 3425 if (qpair->reqq_start_iocbs) 3426 qpair->reqq_start_iocbs(qpair); 3427 else 3428 qla2x00_start_iocbs(vha, qpair->req); 3429 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3430 3431 return res; 3432 3433 out_unlock_free_unmap: 3434 qlt_unmap_sg(vha, cmd); 3435 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3436 3437 return res; 3438 } 3439 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3440 3441 3442 /* 3443 * it is assumed either hardware_lock or qpair lock is held. 3444 */ 3445 static void 3446 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3447 struct ctio_crc_from_fw *sts) 3448 { 3449 uint8_t *ap = &sts->actual_dif[0]; 3450 uint8_t *ep = &sts->expected_dif[0]; 3451 uint64_t lba = cmd->se_cmd.t_task_lba; 3452 uint8_t scsi_status, sense_key, asc, ascq; 3453 unsigned long flags; 3454 struct scsi_qla_host *vha = cmd->vha; 3455 3456 cmd->trc_flags |= TRC_DIF_ERR; 3457 3458 cmd->a_guard = get_unaligned_be16(ap + 0); 3459 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3460 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3461 3462 cmd->e_guard = get_unaligned_be16(ep + 0); 3463 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3464 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3465 3466 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3467 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3468 3469 scsi_status = sense_key = asc = ascq = 0; 3470 3471 /* check appl tag */ 3472 if (cmd->e_app_tag != cmd->a_app_tag) { 3473 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3474 "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]", 3475 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3476 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3477 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3478 cmd->atio.u.isp24.fcp_hdr.ox_id); 3479 3480 cmd->dif_err_code = DIF_ERR_APP; 3481 scsi_status = SAM_STAT_CHECK_CONDITION; 3482 sense_key = ABORTED_COMMAND; 3483 asc = 0x10; 3484 ascq = 0x2; 3485 } 3486 3487 /* check ref tag */ 3488 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3489 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3490 "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] ", 3491 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3492 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3493 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3494 cmd->atio.u.isp24.fcp_hdr.ox_id); 3495 3496 cmd->dif_err_code = DIF_ERR_REF; 3497 scsi_status = SAM_STAT_CHECK_CONDITION; 3498 sense_key = ABORTED_COMMAND; 3499 asc = 0x10; 3500 ascq = 0x3; 3501 goto out; 3502 } 3503 3504 /* check guard */ 3505 if (cmd->e_guard != cmd->a_guard) { 3506 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3507 "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]", 3508 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3509 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3510 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3511 cmd->atio.u.isp24.fcp_hdr.ox_id); 3512 3513 cmd->dif_err_code = DIF_ERR_GRD; 3514 scsi_status = SAM_STAT_CHECK_CONDITION; 3515 sense_key = ABORTED_COMMAND; 3516 asc = 0x10; 3517 ascq = 0x1; 3518 } 3519 out: 3520 switch (cmd->state) { 3521 case QLA_TGT_STATE_NEED_DATA: 3522 /* handle_data will load DIF error code */ 3523 cmd->state = QLA_TGT_STATE_DATA_IN; 3524 vha->hw->tgt.tgt_ops->handle_data(cmd); 3525 break; 3526 default: 3527 spin_lock_irqsave(&cmd->cmd_lock, flags); 3528 if (cmd->aborted) { 3529 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3530 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3531 break; 3532 } 3533 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3534 3535 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3536 ascq); 3537 /* assume scsi status gets out on the wire. 3538 * Will not wait for completion. 3539 */ 3540 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3541 break; 3542 } 3543 } 3544 3545 /* If hardware_lock held on entry, might drop it, then reaquire */ 3546 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3547 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3548 struct imm_ntfy_from_isp *ntfy) 3549 { 3550 struct nack_to_isp *nack; 3551 struct qla_hw_data *ha = vha->hw; 3552 request_t *pkt; 3553 int ret = 0; 3554 3555 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3556 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3557 3558 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3559 if (pkt == NULL) { 3560 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3561 "qla_target(%d): %s failed: unable to allocate " 3562 "request packet\n", vha->vp_idx, __func__); 3563 return -ENOMEM; 3564 } 3565 3566 pkt->entry_type = NOTIFY_ACK_TYPE; 3567 pkt->entry_count = 1; 3568 pkt->handle = QLA_TGT_SKIP_HANDLE; 3569 3570 nack = (struct nack_to_isp *)pkt; 3571 nack->ox_id = ntfy->ox_id; 3572 3573 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3574 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3575 nack->u.isp24.flags = ntfy->u.isp24.flags & 3576 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3577 } 3578 3579 /* terminate */ 3580 nack->u.isp24.flags |= 3581 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3582 3583 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3584 nack->u.isp24.status = ntfy->u.isp24.status; 3585 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3586 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3587 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3588 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3589 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3590 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3591 3592 qla2x00_start_iocbs(vha, vha->req); 3593 return ret; 3594 } 3595 3596 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3597 struct imm_ntfy_from_isp *imm, int ha_locked) 3598 { 3599 int rc; 3600 3601 WARN_ON_ONCE(!ha_locked); 3602 rc = __qlt_send_term_imm_notif(vha, imm); 3603 pr_debug("rc = %d\n", rc); 3604 } 3605 3606 /* 3607 * If hardware_lock held on entry, might drop it, then reaquire 3608 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3609 */ 3610 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3611 struct qla_tgt_cmd *cmd, 3612 struct atio_from_isp *atio) 3613 { 3614 struct scsi_qla_host *vha = qpair->vha; 3615 struct ctio7_to_24xx *ctio24; 3616 struct qla_hw_data *ha = vha->hw; 3617 request_t *pkt; 3618 int ret = 0; 3619 uint16_t temp; 3620 3621 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3622 3623 if (cmd) 3624 vha = cmd->vha; 3625 3626 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3627 if (pkt == NULL) { 3628 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3629 "qla_target(%d): %s failed: unable to allocate " 3630 "request packet\n", vha->vp_idx, __func__); 3631 return -ENOMEM; 3632 } 3633 3634 if (cmd != NULL) { 3635 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3636 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3637 "qla_target(%d): Terminating cmd %p with " 3638 "incorrect state %d\n", vha->vp_idx, cmd, 3639 cmd->state); 3640 } else 3641 ret = 1; 3642 } 3643 3644 qpair->tgt_counters.num_term_xchg_sent++; 3645 pkt->entry_count = 1; 3646 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3647 3648 ctio24 = (struct ctio7_to_24xx *)pkt; 3649 ctio24->entry_type = CTIO_TYPE7; 3650 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3651 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3652 ctio24->vp_index = vha->vp_idx; 3653 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3654 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3655 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3656 CTIO7_FLAGS_TERMINATE; 3657 ctio24->u.status1.flags = cpu_to_le16(temp); 3658 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3659 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3660 3661 /* Memory Barrier */ 3662 wmb(); 3663 if (qpair->reqq_start_iocbs) 3664 qpair->reqq_start_iocbs(qpair); 3665 else 3666 qla2x00_start_iocbs(vha, qpair->req); 3667 return ret; 3668 } 3669 3670 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3671 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3672 int ul_abort) 3673 { 3674 struct scsi_qla_host *vha; 3675 unsigned long flags = 0; 3676 int rc; 3677 3678 /* why use different vha? NPIV */ 3679 if (cmd) 3680 vha = cmd->vha; 3681 else 3682 vha = qpair->vha; 3683 3684 if (ha_locked) { 3685 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3686 if (rc == -ENOMEM) 3687 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3688 goto done; 3689 } 3690 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3691 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3692 if (rc == -ENOMEM) 3693 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3694 3695 done: 3696 if (cmd && !ul_abort && !cmd->aborted) { 3697 if (cmd->sg_mapped) 3698 qlt_unmap_sg(vha, cmd); 3699 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3700 } 3701 3702 if (!ha_locked) 3703 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3704 3705 return; 3706 } 3707 3708 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3709 { 3710 struct list_head free_list; 3711 struct qla_tgt_cmd *cmd, *tcmd; 3712 3713 vha->hw->tgt.leak_exchg_thresh_hold = 3714 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3715 3716 cmd = tcmd = NULL; 3717 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3718 INIT_LIST_HEAD(&free_list); 3719 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3720 3721 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3722 list_del(&cmd->cmd_list); 3723 /* This cmd was never sent to TCM. There is no need 3724 * to schedule free or call free_cmd 3725 */ 3726 qlt_free_cmd(cmd); 3727 vha->hw->tgt.num_qfull_cmds_alloc--; 3728 } 3729 } 3730 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3731 } 3732 3733 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3734 { 3735 uint32_t total_leaked; 3736 3737 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3738 3739 if (vha->hw->tgt.leak_exchg_thresh_hold && 3740 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3741 3742 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3743 "Chip reset due to exchange starvation: %d/%d.\n", 3744 total_leaked, vha->hw->cur_fw_xcb_count); 3745 3746 if (IS_P3P_TYPE(vha->hw)) 3747 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3748 else 3749 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3750 qla2xxx_wake_dpc(vha); 3751 } 3752 3753 } 3754 3755 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3756 { 3757 struct qla_tgt *tgt = cmd->tgt; 3758 struct scsi_qla_host *vha = tgt->vha; 3759 struct se_cmd *se_cmd = &cmd->se_cmd; 3760 unsigned long flags; 3761 3762 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3763 "qla_target(%d): terminating exchange for aborted cmd=%p " 3764 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3765 se_cmd->tag); 3766 3767 spin_lock_irqsave(&cmd->cmd_lock, flags); 3768 if (cmd->aborted) { 3769 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3770 /* 3771 * It's normal to see 2 calls in this path: 3772 * 1) XFER Rdy completion + CMD_T_ABORT 3773 * 2) TCM TMR - drain_state_list 3774 */ 3775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3776 "multiple abort. %p transport_state %x, t_state %x, " 3777 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3778 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3779 return EIO; 3780 } 3781 cmd->aborted = 1; 3782 cmd->trc_flags |= TRC_ABORT; 3783 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3784 3785 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3786 return 0; 3787 } 3788 EXPORT_SYMBOL(qlt_abort_cmd); 3789 3790 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3791 { 3792 struct fc_port *sess = cmd->sess; 3793 3794 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3795 "%s: se_cmd[%p] ox_id %04x\n", 3796 __func__, &cmd->se_cmd, 3797 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3798 3799 BUG_ON(cmd->cmd_in_wq); 3800 3801 if (cmd->sg_mapped) 3802 qlt_unmap_sg(cmd->vha, cmd); 3803 3804 if (!cmd->q_full) 3805 qlt_decr_num_pend_cmds(cmd->vha); 3806 3807 BUG_ON(cmd->sg_mapped); 3808 cmd->jiffies_at_free = get_jiffies_64(); 3809 if (unlikely(cmd->free_sg)) 3810 kfree(cmd->sg); 3811 3812 if (!sess || !sess->se_sess) { 3813 WARN_ON(1); 3814 return; 3815 } 3816 cmd->jiffies_at_free = get_jiffies_64(); 3817 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3818 } 3819 EXPORT_SYMBOL(qlt_free_cmd); 3820 3821 /* 3822 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3823 */ 3824 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3825 struct qla_tgt_cmd *cmd, uint32_t status) 3826 { 3827 int term = 0; 3828 struct scsi_qla_host *vha = qpair->vha; 3829 3830 if (cmd->se_cmd.prot_op) 3831 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3832 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3833 "se_cmd=%p tag[%x] op %#x/%s", 3834 cmd->lba, cmd->lba, 3835 cmd->num_blks, &cmd->se_cmd, 3836 cmd->atio.u.isp24.exchange_addr, 3837 cmd->se_cmd.prot_op, 3838 prot_op_str(cmd->se_cmd.prot_op)); 3839 3840 if (ctio != NULL) { 3841 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3842 3843 term = !(c->flags & 3844 cpu_to_le16(OF_TERM_EXCH)); 3845 } else 3846 term = 1; 3847 3848 if (term) 3849 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3850 3851 return term; 3852 } 3853 3854 3855 /* ha->hardware_lock supposed to be held on entry */ 3856 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3857 struct rsp_que *rsp, uint32_t handle, void *ctio) 3858 { 3859 void *cmd = NULL; 3860 struct req_que *req; 3861 int qid = GET_QID(handle); 3862 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3863 3864 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3865 return NULL; 3866 3867 if (qid == rsp->req->id) { 3868 req = rsp->req; 3869 } else if (vha->hw->req_q_map[qid]) { 3870 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3871 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3872 vha->vp_idx, rsp->id, handle); 3873 req = vha->hw->req_q_map[qid]; 3874 } else { 3875 return NULL; 3876 } 3877 3878 h &= QLA_CMD_HANDLE_MASK; 3879 3880 if (h != QLA_TGT_NULL_HANDLE) { 3881 if (unlikely(h >= req->num_outstanding_cmds)) { 3882 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3883 "qla_target(%d): Wrong handle %x received\n", 3884 vha->vp_idx, handle); 3885 return NULL; 3886 } 3887 3888 cmd = (void *) req->outstanding_cmds[h]; 3889 if (unlikely(cmd == NULL)) { 3890 ql_dbg(ql_dbg_async, vha, 0xe053, 3891 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3892 vha->vp_idx, handle, req->id, rsp->id); 3893 return NULL; 3894 } 3895 req->outstanding_cmds[h] = NULL; 3896 } else if (ctio != NULL) { 3897 /* We can't get loop ID from CTIO7 */ 3898 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3899 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3900 "support NULL handles\n", vha->vp_idx); 3901 return NULL; 3902 } 3903 3904 return cmd; 3905 } 3906 3907 /* 3908 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3909 */ 3910 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3911 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3912 { 3913 struct qla_hw_data *ha = vha->hw; 3914 struct se_cmd *se_cmd; 3915 struct qla_tgt_cmd *cmd; 3916 struct qla_qpair *qpair = rsp->qpair; 3917 3918 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3919 /* That could happen only in case of an error/reset/abort */ 3920 if (status != CTIO_SUCCESS) { 3921 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3922 "Intermediate CTIO received" 3923 " (status %x)\n", status); 3924 } 3925 return; 3926 } 3927 3928 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3929 if (cmd == NULL) 3930 return; 3931 3932 se_cmd = &cmd->se_cmd; 3933 cmd->cmd_sent_to_fw = 0; 3934 3935 qlt_unmap_sg(vha, cmd); 3936 3937 if (unlikely(status != CTIO_SUCCESS)) { 3938 switch (status & 0xFFFF) { 3939 case CTIO_INVALID_RX_ID: 3940 if (printk_ratelimit()) 3941 dev_info(&vha->hw->pdev->dev, 3942 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3943 vha->vp_idx, cmd->atio.u.isp24.attr, 3944 ((cmd->ctio_flags >> 9) & 0xf), 3945 cmd->ctio_flags); 3946 3947 break; 3948 case CTIO_LIP_RESET: 3949 case CTIO_TARGET_RESET: 3950 case CTIO_ABORTED: 3951 /* driver request abort via Terminate exchange */ 3952 case CTIO_TIMEOUT: 3953 /* They are OK */ 3954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3955 "qla_target(%d): CTIO with " 3956 "status %#x received, state %x, se_cmd %p, " 3957 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3958 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3959 status, cmd->state, se_cmd); 3960 break; 3961 3962 case CTIO_PORT_LOGGED_OUT: 3963 case CTIO_PORT_UNAVAILABLE: 3964 { 3965 int logged_out = 3966 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3967 3968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3969 "qla_target(%d): CTIO with %s status %x " 3970 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3971 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3972 status, cmd->state, se_cmd); 3973 3974 if (logged_out && cmd->sess) { 3975 /* 3976 * Session is already logged out, but we need 3977 * to notify initiator, who's not aware of this 3978 */ 3979 cmd->sess->send_els_logo = 1; 3980 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3981 "%s %d %8phC post del sess\n", 3982 __func__, __LINE__, cmd->sess->port_name); 3983 3984 qlt_schedule_sess_for_deletion(cmd->sess); 3985 } 3986 break; 3987 } 3988 case CTIO_DIF_ERROR: { 3989 struct ctio_crc_from_fw *crc = 3990 (struct ctio_crc_from_fw *)ctio; 3991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3992 "qla_target(%d): CTIO with DIF_ERROR status %x " 3993 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3994 "expect_dif[0x%llx]\n", 3995 vha->vp_idx, status, cmd->state, se_cmd, 3996 *((u64 *)&crc->actual_dif[0]), 3997 *((u64 *)&crc->expected_dif[0])); 3998 3999 qlt_handle_dif_error(qpair, cmd, ctio); 4000 return; 4001 } 4002 default: 4003 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4004 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4005 vha->vp_idx, status, cmd->state, se_cmd); 4006 break; 4007 } 4008 4009 4010 /* "cmd->aborted" means 4011 * cmd is already aborted/terminated, we don't 4012 * need to terminate again. The exchange is already 4013 * cleaned up/freed at FW level. Just cleanup at driver 4014 * level. 4015 */ 4016 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4017 (!cmd->aborted)) { 4018 cmd->trc_flags |= TRC_CTIO_ERR; 4019 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4020 return; 4021 } 4022 } 4023 4024 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4025 cmd->trc_flags |= TRC_CTIO_DONE; 4026 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4027 cmd->state = QLA_TGT_STATE_DATA_IN; 4028 4029 if (status == CTIO_SUCCESS) 4030 cmd->write_data_transferred = 1; 4031 4032 ha->tgt.tgt_ops->handle_data(cmd); 4033 return; 4034 } else if (cmd->aborted) { 4035 cmd->trc_flags |= TRC_CTIO_ABORTED; 4036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4037 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4038 } else { 4039 cmd->trc_flags |= TRC_CTIO_STRANGE; 4040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4041 "qla_target(%d): A command in state (%d) should " 4042 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4043 } 4044 4045 if (unlikely(status != CTIO_SUCCESS) && 4046 !cmd->aborted) { 4047 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4048 dump_stack(); 4049 } 4050 4051 ha->tgt.tgt_ops->free_cmd(cmd); 4052 } 4053 4054 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4055 uint8_t task_codes) 4056 { 4057 int fcp_task_attr; 4058 4059 switch (task_codes) { 4060 case ATIO_SIMPLE_QUEUE: 4061 fcp_task_attr = TCM_SIMPLE_TAG; 4062 break; 4063 case ATIO_HEAD_OF_QUEUE: 4064 fcp_task_attr = TCM_HEAD_TAG; 4065 break; 4066 case ATIO_ORDERED_QUEUE: 4067 fcp_task_attr = TCM_ORDERED_TAG; 4068 break; 4069 case ATIO_ACA_QUEUE: 4070 fcp_task_attr = TCM_ACA_TAG; 4071 break; 4072 case ATIO_UNTAGGED: 4073 fcp_task_attr = TCM_SIMPLE_TAG; 4074 break; 4075 default: 4076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4077 "qla_target: unknown task code %x, use ORDERED instead\n", 4078 task_codes); 4079 fcp_task_attr = TCM_ORDERED_TAG; 4080 break; 4081 } 4082 4083 return fcp_task_attr; 4084 } 4085 4086 /* 4087 * Process context for I/O path into tcm_qla2xxx code 4088 */ 4089 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4090 { 4091 scsi_qla_host_t *vha = cmd->vha; 4092 struct qla_hw_data *ha = vha->hw; 4093 struct fc_port *sess = cmd->sess; 4094 struct atio_from_isp *atio = &cmd->atio; 4095 unsigned char *cdb; 4096 unsigned long flags; 4097 uint32_t data_length; 4098 int ret, fcp_task_attr, data_dir, bidi = 0; 4099 struct qla_qpair *qpair = cmd->qpair; 4100 4101 cmd->cmd_in_wq = 0; 4102 cmd->trc_flags |= TRC_DO_WORK; 4103 4104 if (cmd->aborted) { 4105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4106 "cmd with tag %u is aborted\n", 4107 cmd->atio.u.isp24.exchange_addr); 4108 goto out_term; 4109 } 4110 4111 spin_lock_init(&cmd->cmd_lock); 4112 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4113 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4114 4115 if (atio->u.isp24.fcp_cmnd.rddata && 4116 atio->u.isp24.fcp_cmnd.wrdata) { 4117 bidi = 1; 4118 data_dir = DMA_TO_DEVICE; 4119 } else if (atio->u.isp24.fcp_cmnd.rddata) 4120 data_dir = DMA_FROM_DEVICE; 4121 else if (atio->u.isp24.fcp_cmnd.wrdata) 4122 data_dir = DMA_TO_DEVICE; 4123 else 4124 data_dir = DMA_NONE; 4125 4126 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4127 atio->u.isp24.fcp_cmnd.task_attr); 4128 data_length = get_datalen_for_atio(atio); 4129 4130 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4131 fcp_task_attr, data_dir, bidi); 4132 if (ret != 0) 4133 goto out_term; 4134 /* 4135 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4136 */ 4137 ha->tgt.tgt_ops->put_sess(sess); 4138 return; 4139 4140 out_term: 4141 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4142 /* 4143 * cmd has not sent to target yet, so pass NULL as the second 4144 * argument to qlt_send_term_exchange() and free the memory here. 4145 */ 4146 cmd->trc_flags |= TRC_DO_WORK_ERR; 4147 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4148 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4149 4150 qlt_decr_num_pend_cmds(vha); 4151 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4152 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4153 4154 ha->tgt.tgt_ops->put_sess(sess); 4155 } 4156 4157 static void qlt_do_work(struct work_struct *work) 4158 { 4159 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4160 scsi_qla_host_t *vha = cmd->vha; 4161 unsigned long flags; 4162 4163 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4164 list_del(&cmd->cmd_list); 4165 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4166 4167 __qlt_do_work(cmd); 4168 } 4169 4170 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4171 { 4172 unsigned long flags; 4173 struct qla_hw_data *ha = vha->hw; 4174 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4175 void *node; 4176 u64 key = 0; 4177 4178 ql_log(ql_log_info, vha, 0x706c, 4179 "User update Number of Active Qpairs %d\n", 4180 ha->tgt.num_act_qpairs); 4181 4182 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4183 4184 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4185 btree_remove64(&tgt->lun_qpair_map, key); 4186 4187 ha->base_qpair->lun_cnt = 0; 4188 for (key = 0; key < ha->max_qpairs; key++) 4189 if (ha->queue_pair_map[key]) 4190 ha->queue_pair_map[key]->lun_cnt = 0; 4191 4192 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4193 } 4194 4195 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4196 struct qla_tgt_cmd *cmd) 4197 { 4198 struct qla_qpair *qpair, *qp; 4199 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4200 struct qla_qpair_hint *h; 4201 4202 if (vha->flags.qpairs_available) { 4203 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4204 if (unlikely(!h)) { 4205 /* spread lun to qpair ratio evently */ 4206 int lcnt = 0, rc; 4207 struct scsi_qla_host *base_vha = 4208 pci_get_drvdata(vha->hw->pdev); 4209 4210 qpair = vha->hw->base_qpair; 4211 if (qpair->lun_cnt == 0) { 4212 qpair->lun_cnt++; 4213 h = qla_qpair_to_hint(tgt, qpair); 4214 BUG_ON(!h); 4215 rc = btree_insert64(&tgt->lun_qpair_map, 4216 cmd->unpacked_lun, h, GFP_ATOMIC); 4217 if (rc) { 4218 qpair->lun_cnt--; 4219 ql_log(ql_log_info, vha, 0xd037, 4220 "Unable to insert lun %llx into lun_qpair_map\n", 4221 cmd->unpacked_lun); 4222 } 4223 goto out; 4224 } else { 4225 lcnt = qpair->lun_cnt; 4226 } 4227 4228 h = NULL; 4229 list_for_each_entry(qp, &base_vha->qp_list, 4230 qp_list_elem) { 4231 if (qp->lun_cnt == 0) { 4232 qp->lun_cnt++; 4233 h = qla_qpair_to_hint(tgt, qp); 4234 BUG_ON(!h); 4235 rc = btree_insert64(&tgt->lun_qpair_map, 4236 cmd->unpacked_lun, h, GFP_ATOMIC); 4237 if (rc) { 4238 qp->lun_cnt--; 4239 ql_log(ql_log_info, vha, 0xd038, 4240 "Unable to insert lun %llx into lun_qpair_map\n", 4241 cmd->unpacked_lun); 4242 } 4243 qpair = qp; 4244 goto out; 4245 } else { 4246 if (qp->lun_cnt < lcnt) { 4247 lcnt = qp->lun_cnt; 4248 qpair = qp; 4249 continue; 4250 } 4251 } 4252 } 4253 BUG_ON(!qpair); 4254 qpair->lun_cnt++; 4255 h = qla_qpair_to_hint(tgt, qpair); 4256 BUG_ON(!h); 4257 rc = btree_insert64(&tgt->lun_qpair_map, 4258 cmd->unpacked_lun, h, GFP_ATOMIC); 4259 if (rc) { 4260 qpair->lun_cnt--; 4261 ql_log(ql_log_info, vha, 0xd039, 4262 "Unable to insert lun %llx into lun_qpair_map\n", 4263 cmd->unpacked_lun); 4264 } 4265 } 4266 } else { 4267 h = &tgt->qphints[0]; 4268 } 4269 out: 4270 cmd->qpair = h->qpair; 4271 cmd->se_cmd.cpuid = h->cpuid; 4272 } 4273 4274 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4275 struct fc_port *sess, 4276 struct atio_from_isp *atio) 4277 { 4278 struct qla_tgt_cmd *cmd; 4279 4280 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4281 if (!cmd) 4282 return NULL; 4283 4284 cmd->cmd_type = TYPE_TGT_CMD; 4285 memcpy(&cmd->atio, atio, sizeof(*atio)); 4286 cmd->state = QLA_TGT_STATE_NEW; 4287 cmd->tgt = vha->vha_tgt.qla_tgt; 4288 qlt_incr_num_pend_cmds(vha); 4289 cmd->vha = vha; 4290 cmd->sess = sess; 4291 cmd->loop_id = sess->loop_id; 4292 cmd->conf_compl_supported = sess->conf_compl_supported; 4293 4294 cmd->trc_flags = 0; 4295 cmd->jiffies_at_alloc = get_jiffies_64(); 4296 4297 cmd->unpacked_lun = scsilun_to_int( 4298 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4299 qlt_assign_qpair(vha, cmd); 4300 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4301 cmd->vp_idx = vha->vp_idx; 4302 4303 return cmd; 4304 } 4305 4306 /* ha->hardware_lock supposed to be held on entry */ 4307 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4308 struct atio_from_isp *atio) 4309 { 4310 struct qla_hw_data *ha = vha->hw; 4311 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4312 struct fc_port *sess; 4313 struct qla_tgt_cmd *cmd; 4314 unsigned long flags; 4315 port_id_t id; 4316 4317 if (unlikely(tgt->tgt_stop)) { 4318 ql_dbg(ql_dbg_io, vha, 0x3061, 4319 "New command while device %p is shutting down\n", tgt); 4320 return -ENODEV; 4321 } 4322 4323 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4324 if (IS_SW_RESV_ADDR(id)) 4325 return -EBUSY; 4326 4327 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4328 if (unlikely(!sess)) 4329 return -EFAULT; 4330 4331 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4332 * session deletion, but it's still in sess_del_work wq */ 4333 if (sess->deleted) { 4334 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4335 "New command while old session %p is being deleted\n", 4336 sess); 4337 return -EFAULT; 4338 } 4339 4340 /* 4341 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4342 */ 4343 if (!kref_get_unless_zero(&sess->sess_kref)) { 4344 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4345 "%s: kref_get fail, %8phC oxid %x \n", 4346 __func__, sess->port_name, 4347 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4348 return -EFAULT; 4349 } 4350 4351 cmd = qlt_get_tag(vha, sess, atio); 4352 if (!cmd) { 4353 ql_dbg(ql_dbg_io, vha, 0x3062, 4354 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4355 ha->tgt.tgt_ops->put_sess(sess); 4356 return -EBUSY; 4357 } 4358 4359 cmd->cmd_in_wq = 1; 4360 cmd->trc_flags |= TRC_NEW_CMD; 4361 4362 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4363 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4364 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4365 4366 INIT_WORK(&cmd->work, qlt_do_work); 4367 if (vha->flags.qpairs_available) { 4368 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4369 } else if (ha->msix_count) { 4370 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4371 queue_work_on(smp_processor_id(), qla_tgt_wq, 4372 &cmd->work); 4373 else 4374 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4375 &cmd->work); 4376 } else { 4377 queue_work(qla_tgt_wq, &cmd->work); 4378 } 4379 4380 return 0; 4381 } 4382 4383 /* ha->hardware_lock supposed to be held on entry */ 4384 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4385 int fn, void *iocb, int flags) 4386 { 4387 struct scsi_qla_host *vha = sess->vha; 4388 struct qla_hw_data *ha = vha->hw; 4389 struct qla_tgt_mgmt_cmd *mcmd; 4390 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4391 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4392 4393 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4394 if (!mcmd) { 4395 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4396 "qla_target(%d): Allocation of management " 4397 "command failed, some commands and their data could " 4398 "leak\n", vha->vp_idx); 4399 return -ENOMEM; 4400 } 4401 memset(mcmd, 0, sizeof(*mcmd)); 4402 mcmd->sess = sess; 4403 4404 if (iocb) { 4405 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4406 sizeof(mcmd->orig_iocb.imm_ntfy)); 4407 } 4408 mcmd->tmr_func = fn; 4409 mcmd->flags = flags; 4410 mcmd->reset_count = ha->base_qpair->chip_reset; 4411 mcmd->qpair = h->qpair; 4412 mcmd->vha = vha; 4413 mcmd->se_cmd.cpuid = h->cpuid; 4414 mcmd->unpacked_lun = lun; 4415 4416 switch (fn) { 4417 case QLA_TGT_LUN_RESET: 4418 case QLA_TGT_CLEAR_TS: 4419 case QLA_TGT_ABORT_TS: 4420 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4421 /* fall through */ 4422 case QLA_TGT_CLEAR_ACA: 4423 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4424 mcmd->qpair = h->qpair; 4425 mcmd->se_cmd.cpuid = h->cpuid; 4426 break; 4427 4428 case QLA_TGT_TARGET_RESET: 4429 case QLA_TGT_NEXUS_LOSS_SESS: 4430 case QLA_TGT_NEXUS_LOSS: 4431 case QLA_TGT_ABORT_ALL: 4432 default: 4433 /* no-op */ 4434 break; 4435 } 4436 4437 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4438 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4439 &mcmd->work); 4440 4441 return 0; 4442 } 4443 4444 /* ha->hardware_lock supposed to be held on entry */ 4445 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4446 { 4447 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4448 struct qla_hw_data *ha = vha->hw; 4449 struct fc_port *sess; 4450 u64 unpacked_lun; 4451 int fn; 4452 unsigned long flags; 4453 4454 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4455 4456 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4457 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4458 a->u.isp24.fcp_hdr.s_id); 4459 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4460 4461 unpacked_lun = 4462 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4463 4464 if (sess == NULL || sess->deleted) 4465 return -EFAULT; 4466 4467 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4468 } 4469 4470 /* ha->hardware_lock supposed to be held on entry */ 4471 static int __qlt_abort_task(struct scsi_qla_host *vha, 4472 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4473 { 4474 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4475 struct qla_hw_data *ha = vha->hw; 4476 struct qla_tgt_mgmt_cmd *mcmd; 4477 u64 unpacked_lun; 4478 int rc; 4479 4480 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4481 if (mcmd == NULL) { 4482 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4483 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4484 vha->vp_idx, __func__); 4485 return -ENOMEM; 4486 } 4487 memset(mcmd, 0, sizeof(*mcmd)); 4488 4489 mcmd->sess = sess; 4490 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4491 sizeof(mcmd->orig_iocb.imm_ntfy)); 4492 4493 unpacked_lun = 4494 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4495 mcmd->reset_count = ha->base_qpair->chip_reset; 4496 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4497 mcmd->qpair = ha->base_qpair; 4498 4499 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4500 le16_to_cpu(iocb->u.isp2x.seq_id)); 4501 if (rc != 0) { 4502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4503 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4504 vha->vp_idx, rc); 4505 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4506 return -EFAULT; 4507 } 4508 4509 return 0; 4510 } 4511 4512 /* ha->hardware_lock supposed to be held on entry */ 4513 static int qlt_abort_task(struct scsi_qla_host *vha, 4514 struct imm_ntfy_from_isp *iocb) 4515 { 4516 struct qla_hw_data *ha = vha->hw; 4517 struct fc_port *sess; 4518 int loop_id; 4519 unsigned long flags; 4520 4521 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4522 4523 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4524 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4525 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4526 4527 if (sess == NULL) { 4528 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4529 "qla_target(%d): task abort for unexisting " 4530 "session\n", vha->vp_idx); 4531 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4532 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4533 } 4534 4535 return __qlt_abort_task(vha, iocb, sess); 4536 } 4537 4538 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4539 { 4540 if (rc != MBS_COMMAND_COMPLETE) { 4541 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4542 "%s: se_sess %p / sess %p from" 4543 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4544 " LOGO failed: %#x\n", 4545 __func__, 4546 fcport->se_sess, 4547 fcport, 4548 fcport->port_name, fcport->loop_id, 4549 fcport->d_id.b.domain, fcport->d_id.b.area, 4550 fcport->d_id.b.al_pa, rc); 4551 } 4552 4553 fcport->logout_completed = 1; 4554 } 4555 4556 /* 4557 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4558 * 4559 * Schedules sessions with matching port_id/loop_id but different wwn for 4560 * deletion. Returns existing session with matching wwn if present. 4561 * Null otherwise. 4562 */ 4563 struct fc_port * 4564 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4565 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4566 { 4567 struct fc_port *sess = NULL, *other_sess; 4568 uint64_t other_wwn; 4569 4570 *conflict_sess = NULL; 4571 4572 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4573 4574 other_wwn = wwn_to_u64(other_sess->port_name); 4575 4576 if (wwn == other_wwn) { 4577 WARN_ON(sess); 4578 sess = other_sess; 4579 continue; 4580 } 4581 4582 /* find other sess with nport_id collision */ 4583 if (port_id.b24 == other_sess->d_id.b24) { 4584 if (loop_id != other_sess->loop_id) { 4585 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4586 "Invalidating sess %p loop_id %d wwn %llx.\n", 4587 other_sess, other_sess->loop_id, other_wwn); 4588 4589 /* 4590 * logout_on_delete is set by default, but another 4591 * session that has the same s_id/loop_id combo 4592 * might have cleared it when requested this session 4593 * deletion, so don't touch it 4594 */ 4595 qlt_schedule_sess_for_deletion(other_sess); 4596 } else { 4597 /* 4598 * Another wwn used to have our s_id/loop_id 4599 * kill the session, but don't free the loop_id 4600 */ 4601 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4602 "Invalidating sess %p loop_id %d wwn %llx.\n", 4603 other_sess, other_sess->loop_id, other_wwn); 4604 4605 other_sess->keep_nport_handle = 1; 4606 if (other_sess->disc_state != DSC_DELETED) 4607 *conflict_sess = other_sess; 4608 qlt_schedule_sess_for_deletion(other_sess); 4609 } 4610 continue; 4611 } 4612 4613 /* find other sess with nport handle collision */ 4614 if ((loop_id == other_sess->loop_id) && 4615 (loop_id != FC_NO_LOOP_ID)) { 4616 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4617 "Invalidating sess %p loop_id %d wwn %llx.\n", 4618 other_sess, other_sess->loop_id, other_wwn); 4619 4620 /* Same loop_id but different s_id 4621 * Ok to kill and logout */ 4622 qlt_schedule_sess_for_deletion(other_sess); 4623 } 4624 } 4625 4626 return sess; 4627 } 4628 4629 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4630 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4631 { 4632 struct qla_tgt_sess_op *op; 4633 struct qla_tgt_cmd *cmd; 4634 uint32_t key; 4635 int count = 0; 4636 unsigned long flags; 4637 4638 key = (((u32)s_id->b.domain << 16) | 4639 ((u32)s_id->b.area << 8) | 4640 ((u32)s_id->b.al_pa)); 4641 4642 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4643 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4644 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4645 4646 if (op_key == key) { 4647 op->aborted = true; 4648 count++; 4649 } 4650 } 4651 4652 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4653 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4654 4655 if (op_key == key) { 4656 op->aborted = true; 4657 count++; 4658 } 4659 } 4660 4661 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4662 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4663 4664 if (cmd_key == key) { 4665 cmd->aborted = 1; 4666 count++; 4667 } 4668 } 4669 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4670 4671 return count; 4672 } 4673 4674 static int qlt_handle_login(struct scsi_qla_host *vha, 4675 struct imm_ntfy_from_isp *iocb) 4676 { 4677 struct fc_port *sess = NULL, *conflict_sess = NULL; 4678 uint64_t wwn; 4679 port_id_t port_id; 4680 uint16_t loop_id, wd3_lo; 4681 int res = 0; 4682 struct qlt_plogi_ack_t *pla; 4683 unsigned long flags; 4684 4685 lockdep_assert_held(&vha->hw->hardware_lock); 4686 4687 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4688 4689 port_id.b.domain = iocb->u.isp24.port_id[2]; 4690 port_id.b.area = iocb->u.isp24.port_id[1]; 4691 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4692 port_id.b.rsvd_1 = 0; 4693 4694 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4695 4696 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4697 abort_cmds_for_s_id(vha, &port_id); 4698 4699 if (wwn) { 4700 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4701 sess = qlt_find_sess_invalidate_other(vha, wwn, 4702 port_id, loop_id, &conflict_sess); 4703 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4704 } else { 4705 ql_dbg(ql_dbg_disc, vha, 0xffff, 4706 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4707 __func__, __LINE__, loop_id, port_id.b24); 4708 qlt_send_term_imm_notif(vha, iocb, 1); 4709 goto out; 4710 } 4711 4712 if (IS_SW_RESV_ADDR(port_id)) { 4713 res = 1; 4714 goto out; 4715 } 4716 4717 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4718 if (!pla) { 4719 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4720 "%s %d %8phC Term INOT due to mem alloc fail", 4721 __func__, __LINE__, 4722 iocb->u.isp24.port_name); 4723 qlt_send_term_imm_notif(vha, iocb, 1); 4724 goto out; 4725 } 4726 4727 if (conflict_sess) { 4728 conflict_sess->login_gen++; 4729 qlt_plogi_ack_link(vha, pla, conflict_sess, 4730 QLT_PLOGI_LINK_CONFLICT); 4731 } 4732 4733 if (!sess) { 4734 pla->ref_count++; 4735 ql_dbg(ql_dbg_disc, vha, 0xffff, 4736 "%s %d %8phC post new sess\n", 4737 __func__, __LINE__, iocb->u.isp24.port_name); 4738 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4739 qla24xx_post_newsess_work(vha, &port_id, 4740 iocb->u.isp24.port_name, 4741 iocb->u.isp24.u.plogi.node_name, 4742 pla, 0); 4743 else 4744 qla24xx_post_newsess_work(vha, &port_id, 4745 iocb->u.isp24.port_name, NULL, 4746 pla, 0); 4747 4748 goto out; 4749 } 4750 4751 if (sess->disc_state == DSC_UPD_FCPORT) { 4752 u16 sec; 4753 4754 /* 4755 * Remote port registration is still going on from 4756 * previous login. Allow it to finish before we 4757 * accept the new login. 4758 */ 4759 sess->next_disc_state = DSC_DELETE_PEND; 4760 sec = jiffies_to_msecs(jiffies - 4761 sess->jiffies_at_registration) / 1000; 4762 if (sess->sec_since_registration < sec && sec && 4763 !(sec % 5)) { 4764 sess->sec_since_registration = sec; 4765 ql_dbg(ql_dbg_disc, vha, 0xffff, 4766 "%s %8phC - Slow Rport registration (%d Sec)\n", 4767 __func__, sess->port_name, sec); 4768 } 4769 4770 if (!conflict_sess) { 4771 list_del(&pla->list); 4772 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4773 } 4774 4775 qlt_send_term_imm_notif(vha, iocb, 1); 4776 goto out; 4777 } 4778 4779 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4780 sess->d_id = port_id; 4781 sess->login_gen++; 4782 4783 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4784 sess->fw_login_state = DSC_LS_PRLI_PEND; 4785 sess->local = 0; 4786 sess->loop_id = loop_id; 4787 sess->d_id = port_id; 4788 sess->fw_login_state = DSC_LS_PRLI_PEND; 4789 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4790 4791 if (wd3_lo & BIT_7) 4792 sess->conf_compl_supported = 1; 4793 4794 if ((wd3_lo & BIT_4) == 0) 4795 sess->port_type = FCT_INITIATOR; 4796 else 4797 sess->port_type = FCT_TARGET; 4798 4799 } else 4800 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4801 4802 4803 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4804 "%s %d %8phC DS %d\n", 4805 __func__, __LINE__, sess->port_name, sess->disc_state); 4806 4807 switch (sess->disc_state) { 4808 case DSC_DELETED: 4809 case DSC_LOGIN_PEND: 4810 qlt_plogi_ack_unref(vha, pla); 4811 break; 4812 4813 default: 4814 /* 4815 * Under normal circumstances we want to release nport handle 4816 * during LOGO process to avoid nport handle leaks inside FW. 4817 * The exception is when LOGO is done while another PLOGI with 4818 * the same nport handle is waiting as might be the case here. 4819 * Note: there is always a possibily of a race where session 4820 * deletion has already started for other reasons (e.g. ACL 4821 * removal) and now PLOGI arrives: 4822 * 1. if PLOGI arrived in FW after nport handle has been freed, 4823 * FW must have assigned this PLOGI a new/same handle and we 4824 * can proceed ACK'ing it as usual when session deletion 4825 * completes. 4826 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4827 * bit reached it, the handle has now been released. We'll 4828 * get an error when we ACK this PLOGI. Nothing will be sent 4829 * back to initiator. Initiator should eventually retry 4830 * PLOGI and situation will correct itself. 4831 */ 4832 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4833 (sess->d_id.b24 == port_id.b24)); 4834 4835 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4836 "%s %d %8phC post del sess\n", 4837 __func__, __LINE__, sess->port_name); 4838 4839 4840 qlt_schedule_sess_for_deletion(sess); 4841 break; 4842 } 4843 out: 4844 return res; 4845 } 4846 4847 /* 4848 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4849 */ 4850 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4851 struct imm_ntfy_from_isp *iocb) 4852 { 4853 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4854 struct qla_hw_data *ha = vha->hw; 4855 struct fc_port *sess = NULL, *conflict_sess = NULL; 4856 uint64_t wwn; 4857 port_id_t port_id; 4858 uint16_t loop_id; 4859 uint16_t wd3_lo; 4860 int res = 0; 4861 unsigned long flags; 4862 4863 lockdep_assert_held(&ha->hardware_lock); 4864 4865 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4866 4867 port_id.b.domain = iocb->u.isp24.port_id[2]; 4868 port_id.b.area = iocb->u.isp24.port_id[1]; 4869 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4870 port_id.b.rsvd_1 = 0; 4871 4872 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4873 4874 ql_dbg(ql_dbg_disc, vha, 0xf026, 4875 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4876 vha->vp_idx, iocb->u.isp24.port_id[2], 4877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4878 iocb->u.isp24.status_subcode, loop_id, 4879 iocb->u.isp24.port_name); 4880 4881 /* res = 1 means ack at the end of thread 4882 * res = 0 means ack async/later. 4883 */ 4884 switch (iocb->u.isp24.status_subcode) { 4885 case ELS_PLOGI: 4886 res = qlt_handle_login(vha, iocb); 4887 break; 4888 4889 case ELS_PRLI: 4890 if (N2N_TOPO(ha)) { 4891 sess = qla2x00_find_fcport_by_wwpn(vha, 4892 iocb->u.isp24.port_name, 1); 4893 4894 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4895 ql_dbg(ql_dbg_disc, vha, 0xffff, 4896 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4897 __func__, __LINE__, 4898 iocb->u.isp24.port_name); 4899 qlt_send_term_imm_notif(vha, iocb, 1); 4900 break; 4901 } 4902 4903 res = qlt_handle_login(vha, iocb); 4904 break; 4905 } 4906 4907 if (IS_SW_RESV_ADDR(port_id)) { 4908 res = 1; 4909 break; 4910 } 4911 4912 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4913 4914 if (wwn) { 4915 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4916 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4917 loop_id, &conflict_sess); 4918 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4919 } 4920 4921 if (conflict_sess) { 4922 switch (conflict_sess->disc_state) { 4923 case DSC_DELETED: 4924 case DSC_DELETE_PEND: 4925 break; 4926 default: 4927 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4928 "PRLI with conflicting sess %p port %8phC\n", 4929 conflict_sess, conflict_sess->port_name); 4930 conflict_sess->fw_login_state = 4931 DSC_LS_PORT_UNAVAIL; 4932 qlt_send_term_imm_notif(vha, iocb, 1); 4933 res = 0; 4934 break; 4935 } 4936 } 4937 4938 if (sess != NULL) { 4939 bool delete = false; 4940 int sec; 4941 4942 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4943 switch (sess->fw_login_state) { 4944 case DSC_LS_PLOGI_PEND: 4945 case DSC_LS_PLOGI_COMP: 4946 case DSC_LS_PRLI_COMP: 4947 break; 4948 default: 4949 delete = true; 4950 break; 4951 } 4952 4953 switch (sess->disc_state) { 4954 case DSC_UPD_FCPORT: 4955 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4956 flags); 4957 4958 sec = jiffies_to_msecs(jiffies - 4959 sess->jiffies_at_registration)/1000; 4960 if (sess->sec_since_registration < sec && sec && 4961 !(sec % 5)) { 4962 sess->sec_since_registration = sec; 4963 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4964 "%s %8phC : Slow Rport registration(%d Sec)\n", 4965 __func__, sess->port_name, sec); 4966 } 4967 qlt_send_term_imm_notif(vha, iocb, 1); 4968 return 0; 4969 4970 case DSC_LOGIN_PEND: 4971 case DSC_GPDB: 4972 case DSC_LOGIN_COMPLETE: 4973 case DSC_ADISC: 4974 delete = false; 4975 break; 4976 default: 4977 break; 4978 } 4979 4980 if (delete) { 4981 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4982 flags); 4983 /* 4984 * Impatient initiator sent PRLI before last 4985 * PLOGI could finish. Will force him to re-try, 4986 * while last one finishes. 4987 */ 4988 ql_log(ql_log_warn, sess->vha, 0xf095, 4989 "sess %p PRLI received, before plogi ack.\n", 4990 sess); 4991 qlt_send_term_imm_notif(vha, iocb, 1); 4992 res = 0; 4993 break; 4994 } 4995 4996 /* 4997 * This shouldn't happen under normal circumstances, 4998 * since we have deleted the old session during PLOGI 4999 */ 5000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5001 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5002 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5003 5004 sess->local = 0; 5005 sess->loop_id = loop_id; 5006 sess->d_id = port_id; 5007 sess->fw_login_state = DSC_LS_PRLI_PEND; 5008 5009 if (wd3_lo & BIT_7) 5010 sess->conf_compl_supported = 1; 5011 5012 if ((wd3_lo & BIT_4) == 0) 5013 sess->port_type = FCT_INITIATOR; 5014 else 5015 sess->port_type = FCT_TARGET; 5016 5017 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5018 } 5019 res = 1; /* send notify ack */ 5020 5021 /* Make session global (not used in fabric mode) */ 5022 if (ha->current_topology != ISP_CFG_F) { 5023 if (sess) { 5024 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5025 "%s %d %8phC post nack\n", 5026 __func__, __LINE__, sess->port_name); 5027 qla24xx_post_nack_work(vha, sess, iocb, 5028 SRB_NACK_PRLI); 5029 res = 0; 5030 } else { 5031 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5032 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5033 qla2xxx_wake_dpc(vha); 5034 } 5035 } else { 5036 if (sess) { 5037 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5038 "%s %d %8phC post nack\n", 5039 __func__, __LINE__, sess->port_name); 5040 qla24xx_post_nack_work(vha, sess, iocb, 5041 SRB_NACK_PRLI); 5042 res = 0; 5043 } 5044 } 5045 break; 5046 5047 case ELS_TPRLO: 5048 if (le16_to_cpu(iocb->u.isp24.flags) & 5049 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5050 loop_id = 0xFFFF; 5051 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5052 res = 1; 5053 break; 5054 } 5055 /* fall through */ 5056 case ELS_LOGO: 5057 case ELS_PRLO: 5058 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5059 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5060 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5061 5062 if (sess) { 5063 sess->login_gen++; 5064 sess->fw_login_state = DSC_LS_LOGO_PEND; 5065 sess->logo_ack_needed = 1; 5066 memcpy(sess->iocb, iocb, IOCB_SIZE); 5067 } 5068 5069 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5070 5071 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5072 "%s: logo %llx res %d sess %p ", 5073 __func__, wwn, res, sess); 5074 if (res == 0) { 5075 /* 5076 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5077 * for LOGO_ACK & sess delete 5078 */ 5079 BUG_ON(!sess); 5080 res = 0; 5081 } else { 5082 /* cmd did not go to upper layer. */ 5083 if (sess) { 5084 qlt_schedule_sess_for_deletion(sess); 5085 res = 0; 5086 } 5087 /* else logo will be ack */ 5088 } 5089 break; 5090 case ELS_PDISC: 5091 case ELS_ADISC: 5092 { 5093 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5094 5095 if (tgt->link_reinit_iocb_pending) { 5096 qlt_send_notify_ack(ha->base_qpair, 5097 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5098 tgt->link_reinit_iocb_pending = 0; 5099 } 5100 5101 sess = qla2x00_find_fcport_by_wwpn(vha, 5102 iocb->u.isp24.port_name, 1); 5103 if (sess) { 5104 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5105 "sess %p lid %d|%d DS %d LS %d\n", 5106 sess, sess->loop_id, loop_id, 5107 sess->disc_state, sess->fw_login_state); 5108 } 5109 5110 res = 1; /* send notify ack */ 5111 break; 5112 } 5113 5114 case ELS_FLOGI: /* should never happen */ 5115 default: 5116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5117 "qla_target(%d): Unsupported ELS command %x " 5118 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5119 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5120 break; 5121 } 5122 5123 ql_dbg(ql_dbg_disc, vha, 0xf026, 5124 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5125 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5126 5127 return res; 5128 } 5129 5130 /* 5131 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5132 */ 5133 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5134 struct imm_ntfy_from_isp *iocb) 5135 { 5136 struct qla_hw_data *ha = vha->hw; 5137 uint32_t add_flags = 0; 5138 int send_notify_ack = 1; 5139 uint16_t status; 5140 5141 lockdep_assert_held(&ha->hardware_lock); 5142 5143 status = le16_to_cpu(iocb->u.isp2x.status); 5144 switch (status) { 5145 case IMM_NTFY_LIP_RESET: 5146 { 5147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5148 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5149 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5150 iocb->u.isp24.status_subcode); 5151 5152 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5153 send_notify_ack = 0; 5154 break; 5155 } 5156 5157 case IMM_NTFY_LIP_LINK_REINIT: 5158 { 5159 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5160 5161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5162 "qla_target(%d): LINK REINIT (loop %#x, " 5163 "subcode %x)\n", vha->vp_idx, 5164 le16_to_cpu(iocb->u.isp24.nport_handle), 5165 iocb->u.isp24.status_subcode); 5166 if (tgt->link_reinit_iocb_pending) { 5167 qlt_send_notify_ack(ha->base_qpair, 5168 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5169 } 5170 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5171 tgt->link_reinit_iocb_pending = 1; 5172 /* 5173 * QLogic requires to wait after LINK REINIT for possible 5174 * PDISC or ADISC ELS commands 5175 */ 5176 send_notify_ack = 0; 5177 break; 5178 } 5179 5180 case IMM_NTFY_PORT_LOGOUT: 5181 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5182 "qla_target(%d): Port logout (loop " 5183 "%#x, subcode %x)\n", vha->vp_idx, 5184 le16_to_cpu(iocb->u.isp24.nport_handle), 5185 iocb->u.isp24.status_subcode); 5186 5187 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5188 send_notify_ack = 0; 5189 /* The sessions will be cleared in the callback, if needed */ 5190 break; 5191 5192 case IMM_NTFY_GLBL_TPRLO: 5193 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5194 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5195 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5196 send_notify_ack = 0; 5197 /* The sessions will be cleared in the callback, if needed */ 5198 break; 5199 5200 case IMM_NTFY_PORT_CONFIG: 5201 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5202 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5203 status); 5204 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5205 send_notify_ack = 0; 5206 /* The sessions will be cleared in the callback, if needed */ 5207 break; 5208 5209 case IMM_NTFY_GLBL_LOGO: 5210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5211 "qla_target(%d): Link failure detected\n", 5212 vha->vp_idx); 5213 /* I_T nexus loss */ 5214 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5215 send_notify_ack = 0; 5216 break; 5217 5218 case IMM_NTFY_IOCB_OVERFLOW: 5219 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5220 "qla_target(%d): Cannot provide requested " 5221 "capability (IOCB overflowed the immediate notify " 5222 "resource count)\n", vha->vp_idx); 5223 break; 5224 5225 case IMM_NTFY_ABORT_TASK: 5226 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5227 "qla_target(%d): Abort Task (S %08x I %#x -> " 5228 "L %#x)\n", vha->vp_idx, 5229 le16_to_cpu(iocb->u.isp2x.seq_id), 5230 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5231 le16_to_cpu(iocb->u.isp2x.lun)); 5232 if (qlt_abort_task(vha, iocb) == 0) 5233 send_notify_ack = 0; 5234 break; 5235 5236 case IMM_NTFY_RESOURCE: 5237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5238 "qla_target(%d): Out of resources, host %ld\n", 5239 vha->vp_idx, vha->host_no); 5240 break; 5241 5242 case IMM_NTFY_MSG_RX: 5243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5244 "qla_target(%d): Immediate notify task %x\n", 5245 vha->vp_idx, iocb->u.isp2x.task_flags); 5246 break; 5247 5248 case IMM_NTFY_ELS: 5249 if (qlt_24xx_handle_els(vha, iocb) == 0) 5250 send_notify_ack = 0; 5251 break; 5252 default: 5253 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5254 "qla_target(%d): Received unknown immediate " 5255 "notify status %x\n", vha->vp_idx, status); 5256 break; 5257 } 5258 5259 if (send_notify_ack) 5260 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5261 0, 0); 5262 } 5263 5264 /* 5265 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5266 * This function sends busy to ISP 2xxx or 24xx. 5267 */ 5268 static int __qlt_send_busy(struct qla_qpair *qpair, 5269 struct atio_from_isp *atio, uint16_t status) 5270 { 5271 struct scsi_qla_host *vha = qpair->vha; 5272 struct ctio7_to_24xx *ctio24; 5273 struct qla_hw_data *ha = vha->hw; 5274 request_t *pkt; 5275 struct fc_port *sess = NULL; 5276 unsigned long flags; 5277 u16 temp; 5278 port_id_t id; 5279 5280 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5281 5282 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5283 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5284 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5285 if (!sess) { 5286 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5287 return 0; 5288 } 5289 /* Sending marker isn't necessary, since we called from ISR */ 5290 5291 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5292 if (!pkt) { 5293 ql_dbg(ql_dbg_io, vha, 0x3063, 5294 "qla_target(%d): %s failed: unable to allocate " 5295 "request packet", vha->vp_idx, __func__); 5296 return -ENOMEM; 5297 } 5298 5299 qpair->tgt_counters.num_q_full_sent++; 5300 pkt->entry_count = 1; 5301 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5302 5303 ctio24 = (struct ctio7_to_24xx *)pkt; 5304 ctio24->entry_type = CTIO_TYPE7; 5305 ctio24->nport_handle = sess->loop_id; 5306 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5307 ctio24->vp_index = vha->vp_idx; 5308 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5309 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5310 temp = (atio->u.isp24.attr << 9) | 5311 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5312 CTIO7_FLAGS_DONT_RET_CTIO; 5313 ctio24->u.status1.flags = cpu_to_le16(temp); 5314 /* 5315 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5316 * if the explicit conformation is used. 5317 */ 5318 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5319 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5320 5321 ctio24->u.status1.residual = get_datalen_for_atio(atio); 5322 5323 if (ctio24->u.status1.residual != 0) 5324 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 5325 5326 /* Memory Barrier */ 5327 wmb(); 5328 if (qpair->reqq_start_iocbs) 5329 qpair->reqq_start_iocbs(qpair); 5330 else 5331 qla2x00_start_iocbs(vha, qpair->req); 5332 return 0; 5333 } 5334 5335 /* 5336 * This routine is used to allocate a command for either a QFull condition 5337 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5338 * out previously. 5339 */ 5340 static void 5341 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5342 struct atio_from_isp *atio, uint16_t status, int qfull) 5343 { 5344 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5345 struct qla_hw_data *ha = vha->hw; 5346 struct fc_port *sess; 5347 struct qla_tgt_cmd *cmd; 5348 unsigned long flags; 5349 5350 if (unlikely(tgt->tgt_stop)) { 5351 ql_dbg(ql_dbg_io, vha, 0x300a, 5352 "New command while device %p is shutting down\n", tgt); 5353 return; 5354 } 5355 5356 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5357 vha->hw->tgt.num_qfull_cmds_dropped++; 5358 if (vha->hw->tgt.num_qfull_cmds_dropped > 5359 vha->qla_stats.stat_max_qfull_cmds_dropped) 5360 vha->qla_stats.stat_max_qfull_cmds_dropped = 5361 vha->hw->tgt.num_qfull_cmds_dropped; 5362 5363 ql_dbg(ql_dbg_io, vha, 0x3068, 5364 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5365 vha->vp_idx, __func__, 5366 vha->hw->tgt.num_qfull_cmds_dropped); 5367 5368 qlt_chk_exch_leak_thresh_hold(vha); 5369 return; 5370 } 5371 5372 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5373 (vha, atio->u.isp24.fcp_hdr.s_id); 5374 if (!sess) 5375 return; 5376 5377 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5378 if (!cmd) { 5379 ql_dbg(ql_dbg_io, vha, 0x3009, 5380 "qla_target(%d): %s: Allocation of cmd failed\n", 5381 vha->vp_idx, __func__); 5382 5383 vha->hw->tgt.num_qfull_cmds_dropped++; 5384 if (vha->hw->tgt.num_qfull_cmds_dropped > 5385 vha->qla_stats.stat_max_qfull_cmds_dropped) 5386 vha->qla_stats.stat_max_qfull_cmds_dropped = 5387 vha->hw->tgt.num_qfull_cmds_dropped; 5388 5389 qlt_chk_exch_leak_thresh_hold(vha); 5390 return; 5391 } 5392 5393 qlt_incr_num_pend_cmds(vha); 5394 INIT_LIST_HEAD(&cmd->cmd_list); 5395 memcpy(&cmd->atio, atio, sizeof(*atio)); 5396 5397 cmd->tgt = vha->vha_tgt.qla_tgt; 5398 cmd->vha = vha; 5399 cmd->reset_count = ha->base_qpair->chip_reset; 5400 cmd->q_full = 1; 5401 cmd->qpair = ha->base_qpair; 5402 5403 if (qfull) { 5404 cmd->q_full = 1; 5405 /* NOTE: borrowing the state field to carry the status */ 5406 cmd->state = status; 5407 } else 5408 cmd->term_exchg = 1; 5409 5410 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5411 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5412 5413 vha->hw->tgt.num_qfull_cmds_alloc++; 5414 if (vha->hw->tgt.num_qfull_cmds_alloc > 5415 vha->qla_stats.stat_max_qfull_cmds_alloc) 5416 vha->qla_stats.stat_max_qfull_cmds_alloc = 5417 vha->hw->tgt.num_qfull_cmds_alloc; 5418 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5419 } 5420 5421 int 5422 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5423 { 5424 struct scsi_qla_host *vha = qpair->vha; 5425 struct qla_hw_data *ha = vha->hw; 5426 unsigned long flags; 5427 struct qla_tgt_cmd *cmd, *tcmd; 5428 struct list_head free_list, q_full_list; 5429 int rc = 0; 5430 5431 if (list_empty(&ha->tgt.q_full_list)) 5432 return 0; 5433 5434 INIT_LIST_HEAD(&free_list); 5435 INIT_LIST_HEAD(&q_full_list); 5436 5437 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5438 if (list_empty(&ha->tgt.q_full_list)) { 5439 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5440 return 0; 5441 } 5442 5443 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5444 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5445 5446 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5447 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5448 if (cmd->q_full) 5449 /* cmd->state is a borrowed field to hold status */ 5450 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5451 else if (cmd->term_exchg) 5452 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5453 5454 if (rc == -ENOMEM) 5455 break; 5456 5457 if (cmd->q_full) 5458 ql_dbg(ql_dbg_io, vha, 0x3006, 5459 "%s: busy sent for ox_id[%04x]\n", __func__, 5460 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5461 else if (cmd->term_exchg) 5462 ql_dbg(ql_dbg_io, vha, 0x3007, 5463 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5464 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5465 else 5466 ql_dbg(ql_dbg_io, vha, 0x3008, 5467 "%s: Unexpected cmd in QFull list %p\n", __func__, 5468 cmd); 5469 5470 list_del(&cmd->cmd_list); 5471 list_add_tail(&cmd->cmd_list, &free_list); 5472 5473 /* piggy back on hardware_lock for protection */ 5474 vha->hw->tgt.num_qfull_cmds_alloc--; 5475 } 5476 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5477 5478 cmd = NULL; 5479 5480 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5481 list_del(&cmd->cmd_list); 5482 /* This cmd was never sent to TCM. There is no need 5483 * to schedule free or call free_cmd 5484 */ 5485 qlt_free_cmd(cmd); 5486 } 5487 5488 if (!list_empty(&q_full_list)) { 5489 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5490 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5491 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5492 } 5493 5494 return rc; 5495 } 5496 5497 static void 5498 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5499 uint16_t status) 5500 { 5501 int rc = 0; 5502 struct scsi_qla_host *vha = qpair->vha; 5503 5504 rc = __qlt_send_busy(qpair, atio, status); 5505 if (rc == -ENOMEM) 5506 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5507 } 5508 5509 static int 5510 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5511 struct atio_from_isp *atio, uint8_t ha_locked) 5512 { 5513 struct qla_hw_data *ha = vha->hw; 5514 unsigned long flags; 5515 5516 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5517 return 0; 5518 5519 if (!ha_locked) 5520 spin_lock_irqsave(&ha->hardware_lock, flags); 5521 qlt_send_busy(qpair, atio, qla_sam_status); 5522 if (!ha_locked) 5523 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5524 5525 return 1; 5526 } 5527 5528 /* ha->hardware_lock supposed to be held on entry */ 5529 /* called via callback from qla2xxx */ 5530 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5531 struct atio_from_isp *atio, uint8_t ha_locked) 5532 { 5533 struct qla_hw_data *ha = vha->hw; 5534 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5535 int rc; 5536 unsigned long flags = 0; 5537 5538 if (unlikely(tgt == NULL)) { 5539 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5540 "ATIO pkt, but no tgt (ha %p)", ha); 5541 return; 5542 } 5543 /* 5544 * In tgt_stop mode we also should allow all requests to pass. 5545 * Otherwise, some commands can stuck. 5546 */ 5547 5548 tgt->atio_irq_cmd_count++; 5549 5550 switch (atio->u.raw.entry_type) { 5551 case ATIO_TYPE7: 5552 if (unlikely(atio->u.isp24.exchange_addr == 5553 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5554 ql_dbg(ql_dbg_io, vha, 0x3065, 5555 "qla_target(%d): ATIO_TYPE7 " 5556 "received with UNKNOWN exchange address, " 5557 "sending QUEUE_FULL\n", vha->vp_idx); 5558 if (!ha_locked) 5559 spin_lock_irqsave(&ha->hardware_lock, flags); 5560 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5561 if (!ha_locked) 5562 spin_unlock_irqrestore(&ha->hardware_lock, 5563 flags); 5564 break; 5565 } 5566 5567 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5568 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5569 atio, ha_locked); 5570 if (rc != 0) { 5571 tgt->atio_irq_cmd_count--; 5572 return; 5573 } 5574 rc = qlt_handle_cmd_for_atio(vha, atio); 5575 } else { 5576 rc = qlt_handle_task_mgmt(vha, atio); 5577 } 5578 if (unlikely(rc != 0)) { 5579 if (!ha_locked) 5580 spin_lock_irqsave(&ha->hardware_lock, flags); 5581 switch (rc) { 5582 case -ENODEV: 5583 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5584 "qla_target: Unable to send command to target\n"); 5585 break; 5586 case -EBADF: 5587 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5588 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5589 qlt_send_term_exchange(ha->base_qpair, NULL, 5590 atio, 1, 0); 5591 break; 5592 case -EBUSY: 5593 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5594 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5595 vha->vp_idx); 5596 qlt_send_busy(ha->base_qpair, atio, 5597 tc_sam_status); 5598 break; 5599 default: 5600 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5601 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5602 vha->vp_idx); 5603 qlt_send_busy(ha->base_qpair, atio, 5604 qla_sam_status); 5605 break; 5606 } 5607 if (!ha_locked) 5608 spin_unlock_irqrestore(&ha->hardware_lock, 5609 flags); 5610 } 5611 break; 5612 5613 case IMMED_NOTIFY_TYPE: 5614 { 5615 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5616 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5617 "qla_target(%d): Received ATIO packet %x " 5618 "with error status %x\n", vha->vp_idx, 5619 atio->u.raw.entry_type, 5620 atio->u.isp2x.entry_status); 5621 break; 5622 } 5623 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5624 5625 if (!ha_locked) 5626 spin_lock_irqsave(&ha->hardware_lock, flags); 5627 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5628 if (!ha_locked) 5629 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5630 break; 5631 } 5632 5633 default: 5634 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5635 "qla_target(%d): Received unknown ATIO atio " 5636 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5637 break; 5638 } 5639 5640 tgt->atio_irq_cmd_count--; 5641 } 5642 5643 /* 5644 * qpair lock is assume to be held 5645 * rc = 0 : send terminate & abts respond 5646 * rc != 0: do not send term & abts respond 5647 */ 5648 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5649 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5650 { 5651 struct qla_hw_data *ha = vha->hw; 5652 int rc = 0; 5653 5654 /* 5655 * Detect unresolved exchange. If the same ABTS is unable 5656 * to terminate an existing command and the same ABTS loops 5657 * between FW & Driver, then force FW dump. Under 1 jiff, 5658 * we should see multiple loops. 5659 */ 5660 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5661 qpair->retry_term_jiff == jiffies) { 5662 /* found existing exchange */ 5663 qpair->retry_term_cnt++; 5664 if (qpair->retry_term_cnt >= 5) { 5665 rc = EIO; 5666 qpair->retry_term_cnt = 0; 5667 ql_log(ql_log_warn, vha, 0xffff, 5668 "Unable to send ABTS Respond. Dumping firmware.\n"); 5669 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5670 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5671 5672 if (qpair == ha->base_qpair) 5673 ha->isp_ops->fw_dump(vha, 1); 5674 else 5675 ha->isp_ops->fw_dump(vha, 0); 5676 5677 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5678 qla2xxx_wake_dpc(vha); 5679 } 5680 } else if (qpair->retry_term_jiff != jiffies) { 5681 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5682 qpair->retry_term_cnt = 0; 5683 qpair->retry_term_jiff = jiffies; 5684 } 5685 5686 return rc; 5687 } 5688 5689 5690 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5691 struct rsp_que *rsp, response_t *pkt) 5692 { 5693 struct abts_resp_from_24xx_fw *entry = 5694 (struct abts_resp_from_24xx_fw *)pkt; 5695 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5696 struct qla_tgt_mgmt_cmd *mcmd; 5697 struct qla_hw_data *ha = vha->hw; 5698 5699 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5700 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5701 ql_dbg(ql_dbg_async, vha, 0xe064, 5702 "qla_target(%d): ABTS Comp without mcmd\n", 5703 vha->vp_idx); 5704 return; 5705 } 5706 5707 if (mcmd) 5708 vha = mcmd->vha; 5709 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5710 5711 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5712 "ABTS_RESP_24XX: compl_status %x\n", 5713 entry->compl_status); 5714 5715 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5716 if ((entry->error_subcode1 == 0x1E) && 5717 (entry->error_subcode2 == 0)) { 5718 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5719 ha->tgt.tgt_ops->free_mcmd(mcmd); 5720 return; 5721 } 5722 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5723 pkt, mcmd); 5724 } else { 5725 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5726 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5727 vha->vp_idx, entry->compl_status, 5728 entry->error_subcode1, 5729 entry->error_subcode2); 5730 ha->tgt.tgt_ops->free_mcmd(mcmd); 5731 } 5732 } else if (mcmd) { 5733 ha->tgt.tgt_ops->free_mcmd(mcmd); 5734 } 5735 } 5736 5737 /* ha->hardware_lock supposed to be held on entry */ 5738 /* called via callback from qla2xxx */ 5739 static void qlt_response_pkt(struct scsi_qla_host *vha, 5740 struct rsp_que *rsp, response_t *pkt) 5741 { 5742 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5743 5744 if (unlikely(tgt == NULL)) { 5745 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5746 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5747 vha->vp_idx, pkt->entry_type, vha->hw); 5748 return; 5749 } 5750 5751 /* 5752 * In tgt_stop mode we also should allow all requests to pass. 5753 * Otherwise, some commands can stuck. 5754 */ 5755 5756 switch (pkt->entry_type) { 5757 case CTIO_CRC2: 5758 case CTIO_TYPE7: 5759 { 5760 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5761 5762 qlt_do_ctio_completion(vha, rsp, entry->handle, 5763 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5764 entry); 5765 break; 5766 } 5767 5768 case ACCEPT_TGT_IO_TYPE: 5769 { 5770 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5771 int rc; 5772 5773 if (atio->u.isp2x.status != 5774 cpu_to_le16(ATIO_CDB_VALID)) { 5775 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5776 "qla_target(%d): ATIO with error " 5777 "status %x received\n", vha->vp_idx, 5778 le16_to_cpu(atio->u.isp2x.status)); 5779 break; 5780 } 5781 5782 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5783 if (rc != 0) 5784 return; 5785 5786 rc = qlt_handle_cmd_for_atio(vha, atio); 5787 if (unlikely(rc != 0)) { 5788 switch (rc) { 5789 case -ENODEV: 5790 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5791 "qla_target: Unable to send command to target\n"); 5792 break; 5793 case -EBADF: 5794 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5795 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5796 qlt_send_term_exchange(rsp->qpair, NULL, 5797 atio, 1, 0); 5798 break; 5799 case -EBUSY: 5800 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5801 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5802 vha->vp_idx); 5803 qlt_send_busy(rsp->qpair, atio, 5804 tc_sam_status); 5805 break; 5806 default: 5807 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5808 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5809 vha->vp_idx); 5810 qlt_send_busy(rsp->qpair, atio, 5811 qla_sam_status); 5812 break; 5813 } 5814 } 5815 } 5816 break; 5817 5818 case CONTINUE_TGT_IO_TYPE: 5819 { 5820 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5821 5822 qlt_do_ctio_completion(vha, rsp, entry->handle, 5823 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5824 entry); 5825 break; 5826 } 5827 5828 case CTIO_A64_TYPE: 5829 { 5830 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5831 5832 qlt_do_ctio_completion(vha, rsp, entry->handle, 5833 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5834 entry); 5835 break; 5836 } 5837 5838 case IMMED_NOTIFY_TYPE: 5839 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5840 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5841 break; 5842 5843 case NOTIFY_ACK_TYPE: 5844 if (tgt->notify_ack_expected > 0) { 5845 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5846 5847 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5848 "NOTIFY_ACK seq %08x status %x\n", 5849 le16_to_cpu(entry->u.isp2x.seq_id), 5850 le16_to_cpu(entry->u.isp2x.status)); 5851 tgt->notify_ack_expected--; 5852 if (entry->u.isp2x.status != 5853 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5854 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5855 "qla_target(%d): NOTIFY_ACK " 5856 "failed %x\n", vha->vp_idx, 5857 le16_to_cpu(entry->u.isp2x.status)); 5858 } 5859 } else { 5860 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5861 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5862 vha->vp_idx); 5863 } 5864 break; 5865 5866 case ABTS_RECV_24XX: 5867 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5868 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5869 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5870 break; 5871 5872 case ABTS_RESP_24XX: 5873 if (tgt->abts_resp_expected > 0) { 5874 qlt_handle_abts_completion(vha, rsp, pkt); 5875 } else { 5876 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5877 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5878 "received\n", vha->vp_idx); 5879 } 5880 break; 5881 5882 default: 5883 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5884 "qla_target(%d): Received unknown response pkt " 5885 "type %x\n", vha->vp_idx, pkt->entry_type); 5886 break; 5887 } 5888 5889 } 5890 5891 /* 5892 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5893 */ 5894 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5895 uint16_t *mailbox) 5896 { 5897 struct qla_hw_data *ha = vha->hw; 5898 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5899 int login_code; 5900 5901 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5902 return; 5903 5904 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5905 IS_QLA2100(ha)) 5906 return; 5907 /* 5908 * In tgt_stop mode we also should allow all requests to pass. 5909 * Otherwise, some commands can stuck. 5910 */ 5911 5912 5913 switch (code) { 5914 case MBA_RESET: /* Reset */ 5915 case MBA_SYSTEM_ERR: /* System Error */ 5916 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5917 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5918 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5919 "qla_target(%d): System error async event %#x " 5920 "occurred", vha->vp_idx, code); 5921 break; 5922 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5923 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5924 break; 5925 5926 case MBA_LOOP_UP: 5927 { 5928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5929 "qla_target(%d): Async LOOP_UP occurred " 5930 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5931 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5932 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5933 if (tgt->link_reinit_iocb_pending) { 5934 qlt_send_notify_ack(ha->base_qpair, 5935 (void *)&tgt->link_reinit_iocb, 5936 0, 0, 0, 0, 0, 0); 5937 tgt->link_reinit_iocb_pending = 0; 5938 } 5939 break; 5940 } 5941 5942 case MBA_LIP_OCCURRED: 5943 case MBA_LOOP_DOWN: 5944 case MBA_LIP_RESET: 5945 case MBA_RSCN_UPDATE: 5946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5947 "qla_target(%d): Async event %#x occurred " 5948 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5949 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5950 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5951 break; 5952 5953 case MBA_REJECTED_FCP_CMD: 5954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5955 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5956 vha->vp_idx, 5957 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5958 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5959 5960 if (le16_to_cpu(mailbox[3]) == 1) { 5961 /* exchange starvation. */ 5962 vha->hw->exch_starvation++; 5963 if (vha->hw->exch_starvation > 5) { 5964 ql_log(ql_log_warn, vha, 0xd03a, 5965 "Exchange starvation-. Resetting RISC\n"); 5966 5967 vha->hw->exch_starvation = 0; 5968 if (IS_P3P_TYPE(vha->hw)) 5969 set_bit(FCOE_CTX_RESET_NEEDED, 5970 &vha->dpc_flags); 5971 else 5972 set_bit(ISP_ABORT_NEEDED, 5973 &vha->dpc_flags); 5974 qla2xxx_wake_dpc(vha); 5975 } 5976 } 5977 break; 5978 5979 case MBA_PORT_UPDATE: 5980 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5981 "qla_target(%d): Port update async event %#x " 5982 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5983 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5984 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5985 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5986 5987 login_code = le16_to_cpu(mailbox[2]); 5988 if (login_code == 0x4) { 5989 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5990 "Async MB 2: Got PLOGI Complete\n"); 5991 vha->hw->exch_starvation = 0; 5992 } else if (login_code == 0x7) 5993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5994 "Async MB 2: Port Logged Out\n"); 5995 break; 5996 default: 5997 break; 5998 } 5999 6000 } 6001 6002 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6003 uint16_t loop_id) 6004 { 6005 fc_port_t *fcport, *tfcp, *del; 6006 int rc; 6007 unsigned long flags; 6008 u8 newfcport = 0; 6009 6010 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6011 if (!fcport) { 6012 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6013 "qla_target(%d): Allocation of tmp FC port failed", 6014 vha->vp_idx); 6015 return NULL; 6016 } 6017 6018 fcport->loop_id = loop_id; 6019 6020 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6021 if (rc != QLA_SUCCESS) { 6022 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6023 "qla_target(%d): Failed to retrieve fcport " 6024 "information -- get_port_database() returned %x " 6025 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6026 kfree(fcport); 6027 return NULL; 6028 } 6029 6030 del = NULL; 6031 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6032 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6033 6034 if (tfcp) { 6035 tfcp->d_id = fcport->d_id; 6036 tfcp->port_type = fcport->port_type; 6037 tfcp->supported_classes = fcport->supported_classes; 6038 tfcp->flags |= fcport->flags; 6039 tfcp->scan_state = QLA_FCPORT_FOUND; 6040 6041 del = fcport; 6042 fcport = tfcp; 6043 } else { 6044 if (vha->hw->current_topology == ISP_CFG_F) 6045 fcport->flags |= FCF_FABRIC_DEVICE; 6046 6047 list_add_tail(&fcport->list, &vha->vp_fcports); 6048 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6049 vha->fcport_count++; 6050 fcport->login_gen++; 6051 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6052 fcport->login_succ = 1; 6053 newfcport = 1; 6054 } 6055 6056 fcport->deleted = 0; 6057 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6058 6059 switch (vha->host->active_mode) { 6060 case MODE_INITIATOR: 6061 case MODE_DUAL: 6062 if (newfcport) { 6063 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6064 qla24xx_sched_upd_fcport(fcport); 6065 } else { 6066 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6067 "%s %d %8phC post gpsc fcp_cnt %d\n", 6068 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6069 qla24xx_post_gpsc_work(vha, fcport); 6070 } 6071 } 6072 break; 6073 6074 case MODE_TARGET: 6075 default: 6076 break; 6077 } 6078 if (del) 6079 qla2x00_free_fcport(del); 6080 6081 return fcport; 6082 } 6083 6084 /* Must be called under tgt_mutex */ 6085 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6086 be_id_t s_id) 6087 { 6088 struct fc_port *sess = NULL; 6089 fc_port_t *fcport = NULL; 6090 int rc, global_resets; 6091 uint16_t loop_id = 0; 6092 6093 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6094 /* 6095 * This is Domain Controller, so it should be 6096 * OK to drop SCSI commands from it. 6097 */ 6098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6099 "Unable to find initiator with S_ID %x:%x:%x", 6100 s_id.domain, s_id.area, s_id.al_pa); 6101 return NULL; 6102 } 6103 6104 mutex_lock(&vha->vha_tgt.tgt_mutex); 6105 6106 retry: 6107 global_resets = 6108 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6109 6110 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6111 if (rc != 0) { 6112 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6113 6114 ql_log(ql_log_info, vha, 0xf071, 6115 "qla_target(%d): Unable to find " 6116 "initiator with S_ID %x:%x:%x", 6117 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6118 6119 if (rc == -ENOENT) { 6120 qlt_port_logo_t logo; 6121 6122 logo.id = be_to_port_id(s_id); 6123 logo.cmd_count = 1; 6124 qlt_send_first_logo(vha, &logo); 6125 } 6126 6127 return NULL; 6128 } 6129 6130 fcport = qlt_get_port_database(vha, loop_id); 6131 if (!fcport) { 6132 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6133 return NULL; 6134 } 6135 6136 if (global_resets != 6137 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6139 "qla_target(%d): global reset during session discovery " 6140 "(counter was %d, new %d), retrying", vha->vp_idx, 6141 global_resets, 6142 atomic_read(&vha->vha_tgt. 6143 qla_tgt->tgt_global_resets_count)); 6144 goto retry; 6145 } 6146 6147 sess = qlt_create_sess(vha, fcport, true); 6148 6149 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6150 6151 return sess; 6152 } 6153 6154 static void qlt_abort_work(struct qla_tgt *tgt, 6155 struct qla_tgt_sess_work_param *prm) 6156 { 6157 struct scsi_qla_host *vha = tgt->vha; 6158 struct qla_hw_data *ha = vha->hw; 6159 struct fc_port *sess = NULL; 6160 unsigned long flags = 0, flags2 = 0; 6161 be_id_t s_id; 6162 int rc; 6163 6164 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6165 6166 if (tgt->tgt_stop) 6167 goto out_term2; 6168 6169 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6170 6171 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6172 if (!sess) { 6173 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6174 6175 sess = qlt_make_local_sess(vha, s_id); 6176 /* sess has got an extra creation ref */ 6177 6178 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6179 if (!sess) 6180 goto out_term2; 6181 } else { 6182 if (sess->deleted) { 6183 sess = NULL; 6184 goto out_term2; 6185 } 6186 6187 if (!kref_get_unless_zero(&sess->sess_kref)) { 6188 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6189 "%s: kref_get fail %8phC \n", 6190 __func__, sess->port_name); 6191 sess = NULL; 6192 goto out_term2; 6193 } 6194 } 6195 6196 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6198 6199 ha->tgt.tgt_ops->put_sess(sess); 6200 6201 if (rc != 0) 6202 goto out_term; 6203 return; 6204 6205 out_term2: 6206 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6207 6208 out_term: 6209 spin_lock_irqsave(&ha->hardware_lock, flags); 6210 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6211 FCP_TMF_REJECTED, false); 6212 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6213 } 6214 6215 static void qlt_tmr_work(struct qla_tgt *tgt, 6216 struct qla_tgt_sess_work_param *prm) 6217 { 6218 struct atio_from_isp *a = &prm->tm_iocb2; 6219 struct scsi_qla_host *vha = tgt->vha; 6220 struct qla_hw_data *ha = vha->hw; 6221 struct fc_port *sess; 6222 unsigned long flags; 6223 be_id_t s_id; 6224 int rc; 6225 u64 unpacked_lun; 6226 int fn; 6227 void *iocb; 6228 6229 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6230 6231 if (tgt->tgt_stop) 6232 goto out_term2; 6233 6234 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6235 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6236 if (!sess) { 6237 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6238 6239 sess = qlt_make_local_sess(vha, s_id); 6240 /* sess has got an extra creation ref */ 6241 6242 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6243 if (!sess) 6244 goto out_term2; 6245 } else { 6246 if (sess->deleted) { 6247 goto out_term2; 6248 } 6249 6250 if (!kref_get_unless_zero(&sess->sess_kref)) { 6251 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6252 "%s: kref_get fail %8phC\n", 6253 __func__, sess->port_name); 6254 goto out_term2; 6255 } 6256 } 6257 6258 iocb = a; 6259 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6260 unpacked_lun = 6261 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6262 6263 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6264 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6265 6266 ha->tgt.tgt_ops->put_sess(sess); 6267 6268 if (rc != 0) 6269 goto out_term; 6270 return; 6271 6272 out_term2: 6273 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6274 out_term: 6275 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6276 } 6277 6278 static void qlt_sess_work_fn(struct work_struct *work) 6279 { 6280 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6281 struct scsi_qla_host *vha = tgt->vha; 6282 unsigned long flags; 6283 6284 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6285 6286 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6287 while (!list_empty(&tgt->sess_works_list)) { 6288 struct qla_tgt_sess_work_param *prm = list_entry( 6289 tgt->sess_works_list.next, typeof(*prm), 6290 sess_works_list_entry); 6291 6292 /* 6293 * This work can be scheduled on several CPUs at time, so we 6294 * must delete the entry to eliminate double processing 6295 */ 6296 list_del(&prm->sess_works_list_entry); 6297 6298 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6299 6300 switch (prm->type) { 6301 case QLA_TGT_SESS_WORK_ABORT: 6302 qlt_abort_work(tgt, prm); 6303 break; 6304 case QLA_TGT_SESS_WORK_TM: 6305 qlt_tmr_work(tgt, prm); 6306 break; 6307 default: 6308 BUG_ON(1); 6309 break; 6310 } 6311 6312 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6313 6314 kfree(prm); 6315 } 6316 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6317 } 6318 6319 /* Must be called under tgt_host_action_mutex */ 6320 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6321 { 6322 struct qla_tgt *tgt; 6323 int rc, i; 6324 struct qla_qpair_hint *h; 6325 6326 if (!QLA_TGT_MODE_ENABLED()) 6327 return 0; 6328 6329 if (!IS_TGT_MODE_CAPABLE(ha)) { 6330 ql_log(ql_log_warn, base_vha, 0xe070, 6331 "This adapter does not support target mode.\n"); 6332 return 0; 6333 } 6334 6335 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6336 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6337 6338 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6339 6340 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6341 if (!tgt) { 6342 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6343 "Unable to allocate struct qla_tgt\n"); 6344 return -ENOMEM; 6345 } 6346 6347 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6348 sizeof(struct qla_qpair_hint), 6349 GFP_KERNEL); 6350 if (!tgt->qphints) { 6351 kfree(tgt); 6352 ql_log(ql_log_warn, base_vha, 0x0197, 6353 "Unable to allocate qpair hints.\n"); 6354 return -ENOMEM; 6355 } 6356 6357 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6358 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6359 6360 rc = btree_init64(&tgt->lun_qpair_map); 6361 if (rc) { 6362 kfree(tgt->qphints); 6363 kfree(tgt); 6364 ql_log(ql_log_info, base_vha, 0x0198, 6365 "Unable to initialize lun_qpair_map btree\n"); 6366 return -EIO; 6367 } 6368 h = &tgt->qphints[0]; 6369 h->qpair = ha->base_qpair; 6370 INIT_LIST_HEAD(&h->hint_elem); 6371 h->cpuid = ha->base_qpair->cpuid; 6372 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6373 6374 for (i = 0; i < ha->max_qpairs; i++) { 6375 unsigned long flags; 6376 6377 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6378 6379 h = &tgt->qphints[i + 1]; 6380 INIT_LIST_HEAD(&h->hint_elem); 6381 if (qpair) { 6382 h->qpair = qpair; 6383 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6384 list_add_tail(&h->hint_elem, &qpair->hints_list); 6385 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6386 h->cpuid = qpair->cpuid; 6387 } 6388 } 6389 6390 tgt->ha = ha; 6391 tgt->vha = base_vha; 6392 init_waitqueue_head(&tgt->waitQ); 6393 INIT_LIST_HEAD(&tgt->del_sess_list); 6394 spin_lock_init(&tgt->sess_work_lock); 6395 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6396 INIT_LIST_HEAD(&tgt->sess_works_list); 6397 atomic_set(&tgt->tgt_global_resets_count, 0); 6398 6399 base_vha->vha_tgt.qla_tgt = tgt; 6400 6401 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6402 "qla_target(%d): using 64 Bit PCI addressing", 6403 base_vha->vp_idx); 6404 /* 3 is reserved */ 6405 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6406 6407 mutex_lock(&qla_tgt_mutex); 6408 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6409 mutex_unlock(&qla_tgt_mutex); 6410 6411 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6412 ha->tgt.tgt_ops->add_target(base_vha); 6413 6414 return 0; 6415 } 6416 6417 /* Must be called under tgt_host_action_mutex */ 6418 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6419 { 6420 if (!vha->vha_tgt.qla_tgt) 6421 return 0; 6422 6423 if (vha->fc_vport) { 6424 qlt_release(vha->vha_tgt.qla_tgt); 6425 return 0; 6426 } 6427 6428 /* free left over qfull cmds */ 6429 qlt_init_term_exchange(vha); 6430 6431 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6432 vha->host_no, ha); 6433 qlt_release(vha->vha_tgt.qla_tgt); 6434 6435 return 0; 6436 } 6437 6438 void qlt_remove_target_resources(struct qla_hw_data *ha) 6439 { 6440 struct scsi_qla_host *node; 6441 u32 key = 0; 6442 6443 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6444 btree_remove32(&ha->tgt.host_map, key); 6445 6446 btree_destroy32(&ha->tgt.host_map); 6447 } 6448 6449 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6450 unsigned char *b) 6451 { 6452 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6453 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6454 put_unaligned_be64(wwpn, b); 6455 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6456 } 6457 6458 /** 6459 * qla_tgt_lport_register - register lport with external module 6460 * 6461 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6462 * @phys_wwpn: physical port WWPN 6463 * @npiv_wwpn: NPIV WWPN 6464 * @npiv_wwnn: NPIV WWNN 6465 * @callback: lport initialization callback for tcm_qla2xxx code 6466 */ 6467 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6468 u64 npiv_wwpn, u64 npiv_wwnn, 6469 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6470 { 6471 struct qla_tgt *tgt; 6472 struct scsi_qla_host *vha; 6473 struct qla_hw_data *ha; 6474 struct Scsi_Host *host; 6475 unsigned long flags; 6476 int rc; 6477 u8 b[WWN_SIZE]; 6478 6479 mutex_lock(&qla_tgt_mutex); 6480 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6481 vha = tgt->vha; 6482 ha = vha->hw; 6483 6484 host = vha->host; 6485 if (!host) 6486 continue; 6487 6488 if (!(host->hostt->supported_mode & MODE_TARGET)) 6489 continue; 6490 6491 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6492 continue; 6493 6494 spin_lock_irqsave(&ha->hardware_lock, flags); 6495 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6496 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6497 host->host_no); 6498 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6499 continue; 6500 } 6501 if (tgt->tgt_stop) { 6502 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6503 host->host_no); 6504 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6505 continue; 6506 } 6507 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6508 6509 if (!scsi_host_get(host)) { 6510 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6511 "Unable to scsi_host_get() for" 6512 " qla2xxx scsi_host\n"); 6513 continue; 6514 } 6515 qlt_lport_dump(vha, phys_wwpn, b); 6516 6517 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6518 scsi_host_put(host); 6519 continue; 6520 } 6521 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6522 if (rc != 0) 6523 scsi_host_put(host); 6524 6525 mutex_unlock(&qla_tgt_mutex); 6526 return rc; 6527 } 6528 mutex_unlock(&qla_tgt_mutex); 6529 6530 return -ENODEV; 6531 } 6532 EXPORT_SYMBOL(qlt_lport_register); 6533 6534 /** 6535 * qla_tgt_lport_deregister - Degister lport 6536 * 6537 * @vha: Registered scsi_qla_host pointer 6538 */ 6539 void qlt_lport_deregister(struct scsi_qla_host *vha) 6540 { 6541 struct qla_hw_data *ha = vha->hw; 6542 struct Scsi_Host *sh = vha->host; 6543 /* 6544 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6545 */ 6546 vha->vha_tgt.target_lport_ptr = NULL; 6547 ha->tgt.tgt_ops = NULL; 6548 /* 6549 * Release the Scsi_Host reference for the underlying qla2xxx host 6550 */ 6551 scsi_host_put(sh); 6552 } 6553 EXPORT_SYMBOL(qlt_lport_deregister); 6554 6555 /* Must be called under HW lock */ 6556 void qlt_set_mode(struct scsi_qla_host *vha) 6557 { 6558 switch (vha->qlini_mode) { 6559 case QLA2XXX_INI_MODE_DISABLED: 6560 case QLA2XXX_INI_MODE_EXCLUSIVE: 6561 vha->host->active_mode = MODE_TARGET; 6562 break; 6563 case QLA2XXX_INI_MODE_ENABLED: 6564 vha->host->active_mode = MODE_INITIATOR; 6565 break; 6566 case QLA2XXX_INI_MODE_DUAL: 6567 vha->host->active_mode = MODE_DUAL; 6568 break; 6569 default: 6570 break; 6571 } 6572 } 6573 6574 /* Must be called under HW lock */ 6575 static void qlt_clear_mode(struct scsi_qla_host *vha) 6576 { 6577 switch (vha->qlini_mode) { 6578 case QLA2XXX_INI_MODE_DISABLED: 6579 vha->host->active_mode = MODE_UNKNOWN; 6580 break; 6581 case QLA2XXX_INI_MODE_EXCLUSIVE: 6582 vha->host->active_mode = MODE_INITIATOR; 6583 break; 6584 case QLA2XXX_INI_MODE_ENABLED: 6585 case QLA2XXX_INI_MODE_DUAL: 6586 vha->host->active_mode = MODE_INITIATOR; 6587 break; 6588 default: 6589 break; 6590 } 6591 } 6592 6593 /* 6594 * qla_tgt_enable_vha - NO LOCK HELD 6595 * 6596 * host_reset, bring up w/ Target Mode Enabled 6597 */ 6598 void 6599 qlt_enable_vha(struct scsi_qla_host *vha) 6600 { 6601 struct qla_hw_data *ha = vha->hw; 6602 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6603 unsigned long flags; 6604 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6605 6606 if (!tgt) { 6607 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6608 "Unable to locate qla_tgt pointer from" 6609 " struct qla_hw_data\n"); 6610 dump_stack(); 6611 return; 6612 } 6613 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6614 return; 6615 6616 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6617 ha->tgt.num_act_qpairs = ha->max_qpairs; 6618 spin_lock_irqsave(&ha->hardware_lock, flags); 6619 tgt->tgt_stopped = 0; 6620 qlt_set_mode(vha); 6621 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6622 6623 mutex_lock(&ha->optrom_mutex); 6624 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6625 "%s.\n", __func__); 6626 if (vha->vp_idx) { 6627 qla24xx_disable_vp(vha); 6628 qla24xx_enable_vp(vha); 6629 } else { 6630 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6631 qla2xxx_wake_dpc(base_vha); 6632 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6633 QLA_SUCCESS); 6634 } 6635 mutex_unlock(&ha->optrom_mutex); 6636 } 6637 EXPORT_SYMBOL(qlt_enable_vha); 6638 6639 /* 6640 * qla_tgt_disable_vha - NO LOCK HELD 6641 * 6642 * Disable Target Mode and reset the adapter 6643 */ 6644 static void qlt_disable_vha(struct scsi_qla_host *vha) 6645 { 6646 struct qla_hw_data *ha = vha->hw; 6647 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6648 unsigned long flags; 6649 6650 if (!tgt) { 6651 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6652 "Unable to locate qla_tgt pointer from" 6653 " struct qla_hw_data\n"); 6654 dump_stack(); 6655 return; 6656 } 6657 6658 spin_lock_irqsave(&ha->hardware_lock, flags); 6659 qlt_clear_mode(vha); 6660 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6661 6662 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6663 qla2xxx_wake_dpc(vha); 6664 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6665 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6666 "qla2x00_wait_for_hba_online() failed\n"); 6667 } 6668 6669 /* 6670 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6671 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6672 * members. 6673 */ 6674 void 6675 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6676 { 6677 vha->vha_tgt.qla_tgt = NULL; 6678 6679 mutex_init(&vha->vha_tgt.tgt_mutex); 6680 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6681 6682 qlt_clear_mode(vha); 6683 6684 /* 6685 * NOTE: Currently the value is kept the same for <24xx and 6686 * >=24xx ISPs. If it is necessary to change it, 6687 * the check should be added for specific ISPs, 6688 * assigning the value appropriately. 6689 */ 6690 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6691 6692 qlt_add_target(ha, vha); 6693 } 6694 6695 u8 6696 qlt_rff_id(struct scsi_qla_host *vha) 6697 { 6698 u8 fc4_feature = 0; 6699 /* 6700 * FC-4 Feature bit 0 indicates target functionality to the name server. 6701 */ 6702 if (qla_tgt_mode_enabled(vha)) { 6703 fc4_feature = BIT_0; 6704 } else if (qla_ini_mode_enabled(vha)) { 6705 fc4_feature = BIT_1; 6706 } else if (qla_dual_mode_enabled(vha)) 6707 fc4_feature = BIT_0 | BIT_1; 6708 6709 return fc4_feature; 6710 } 6711 6712 /* 6713 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6714 * @ha: HA context 6715 * 6716 * Beginning of ATIO ring has initialization control block already built 6717 * by nvram config routine. 6718 * 6719 * Returns 0 on success. 6720 */ 6721 void 6722 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6723 { 6724 struct qla_hw_data *ha = vha->hw; 6725 uint16_t cnt; 6726 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6727 6728 if (qla_ini_mode_enabled(vha)) 6729 return; 6730 6731 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6732 pkt->u.raw.signature = ATIO_PROCESSED; 6733 pkt++; 6734 } 6735 6736 } 6737 6738 /* 6739 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6740 * @ha: SCSI driver HA context 6741 */ 6742 void 6743 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6744 { 6745 struct qla_hw_data *ha = vha->hw; 6746 struct atio_from_isp *pkt; 6747 int cnt, i; 6748 6749 if (!ha->flags.fw_started) 6750 return; 6751 6752 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6753 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6754 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6755 cnt = pkt->u.raw.entry_count; 6756 6757 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6758 /* 6759 * This packet is corrupted. The header + payload 6760 * can not be trusted. There is no point in passing 6761 * it further up. 6762 */ 6763 ql_log(ql_log_warn, vha, 0xd03c, 6764 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6765 &pkt->u.isp24.fcp_hdr.s_id, 6766 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6767 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6768 6769 adjust_corrupted_atio(pkt); 6770 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6771 ha_locked, 0); 6772 } else { 6773 qlt_24xx_atio_pkt_all_vps(vha, 6774 (struct atio_from_isp *)pkt, ha_locked); 6775 } 6776 6777 for (i = 0; i < cnt; i++) { 6778 ha->tgt.atio_ring_index++; 6779 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6780 ha->tgt.atio_ring_index = 0; 6781 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6782 } else 6783 ha->tgt.atio_ring_ptr++; 6784 6785 pkt->u.raw.signature = ATIO_PROCESSED; 6786 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6787 } 6788 wmb(); 6789 } 6790 6791 /* Adjust ring index */ 6792 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6793 } 6794 6795 void 6796 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6797 { 6798 struct qla_hw_data *ha = vha->hw; 6799 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6800 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6801 6802 if (!QLA_TGT_MODE_ENABLED()) 6803 return; 6804 6805 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6806 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6807 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6808 6809 if (ha->flags.msix_enabled) { 6810 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6811 if (IS_QLA2071(ha)) { 6812 /* 4 ports Baker: Enable Interrupt Handshake */ 6813 icb->msix_atio = 0; 6814 icb->firmware_options_2 |= BIT_26; 6815 } else { 6816 icb->msix_atio = cpu_to_le16(msix->entry); 6817 icb->firmware_options_2 &= ~BIT_26; 6818 } 6819 ql_dbg(ql_dbg_init, vha, 0xf072, 6820 "Registering ICB vector 0x%x for atio que.\n", 6821 msix->entry); 6822 } 6823 } else { 6824 /* INTx|MSI */ 6825 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6826 icb->msix_atio = 0; 6827 icb->firmware_options_2 |= BIT_26; 6828 ql_dbg(ql_dbg_init, vha, 0xf072, 6829 "%s: Use INTx for ATIOQ.\n", __func__); 6830 } 6831 } 6832 } 6833 6834 void 6835 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6836 { 6837 struct qla_hw_data *ha = vha->hw; 6838 u32 tmp; 6839 6840 if (!QLA_TGT_MODE_ENABLED()) 6841 return; 6842 6843 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6844 if (!ha->tgt.saved_set) { 6845 /* We save only once */ 6846 ha->tgt.saved_exchange_count = nv->exchange_count; 6847 ha->tgt.saved_firmware_options_1 = 6848 nv->firmware_options_1; 6849 ha->tgt.saved_firmware_options_2 = 6850 nv->firmware_options_2; 6851 ha->tgt.saved_firmware_options_3 = 6852 nv->firmware_options_3; 6853 ha->tgt.saved_set = 1; 6854 } 6855 6856 if (qla_tgt_mode_enabled(vha)) 6857 nv->exchange_count = cpu_to_le16(0xFFFF); 6858 else /* dual */ 6859 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6860 6861 /* Enable target mode */ 6862 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6863 6864 /* Disable ini mode, if requested */ 6865 if (qla_tgt_mode_enabled(vha)) 6866 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6867 6868 /* Disable Full Login after LIP */ 6869 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6870 /* Enable initial LIP */ 6871 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6872 if (ql2xtgt_tape_enable) 6873 /* Enable FC Tape support */ 6874 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6875 else 6876 /* Disable FC Tape support */ 6877 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6878 6879 /* Disable Full Login after LIP */ 6880 nv->host_p &= cpu_to_le32(~BIT_10); 6881 6882 /* 6883 * clear BIT 15 explicitly as we have seen at least 6884 * a couple of instances where this was set and this 6885 * was causing the firmware to not be initialized. 6886 */ 6887 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6888 /* Enable target PRLI control */ 6889 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6890 6891 if (IS_QLA25XX(ha)) { 6892 /* Change Loop-prefer to Pt-Pt */ 6893 tmp = ~(BIT_4|BIT_5|BIT_6); 6894 nv->firmware_options_2 &= cpu_to_le32(tmp); 6895 tmp = P2P << 4; 6896 nv->firmware_options_2 |= cpu_to_le32(tmp); 6897 } 6898 } else { 6899 if (ha->tgt.saved_set) { 6900 nv->exchange_count = ha->tgt.saved_exchange_count; 6901 nv->firmware_options_1 = 6902 ha->tgt.saved_firmware_options_1; 6903 nv->firmware_options_2 = 6904 ha->tgt.saved_firmware_options_2; 6905 nv->firmware_options_3 = 6906 ha->tgt.saved_firmware_options_3; 6907 } 6908 return; 6909 } 6910 6911 if (ha->base_qpair->enable_class_2) { 6912 if (vha->flags.init_done) 6913 fc_host_supported_classes(vha->host) = 6914 FC_COS_CLASS2 | FC_COS_CLASS3; 6915 6916 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6917 } else { 6918 if (vha->flags.init_done) 6919 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6920 6921 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6922 } 6923 } 6924 6925 void 6926 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6927 struct init_cb_24xx *icb) 6928 { 6929 struct qla_hw_data *ha = vha->hw; 6930 6931 if (!QLA_TGT_MODE_ENABLED()) 6932 return; 6933 6934 if (ha->tgt.node_name_set) { 6935 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6936 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6937 } 6938 } 6939 6940 void 6941 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6942 { 6943 struct qla_hw_data *ha = vha->hw; 6944 u32 tmp; 6945 6946 if (!QLA_TGT_MODE_ENABLED()) 6947 return; 6948 6949 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6950 if (!ha->tgt.saved_set) { 6951 /* We save only once */ 6952 ha->tgt.saved_exchange_count = nv->exchange_count; 6953 ha->tgt.saved_firmware_options_1 = 6954 nv->firmware_options_1; 6955 ha->tgt.saved_firmware_options_2 = 6956 nv->firmware_options_2; 6957 ha->tgt.saved_firmware_options_3 = 6958 nv->firmware_options_3; 6959 ha->tgt.saved_set = 1; 6960 } 6961 6962 if (qla_tgt_mode_enabled(vha)) 6963 nv->exchange_count = cpu_to_le16(0xFFFF); 6964 else /* dual */ 6965 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6966 6967 /* Enable target mode */ 6968 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6969 6970 /* Disable ini mode, if requested */ 6971 if (qla_tgt_mode_enabled(vha)) 6972 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6973 /* Disable Full Login after LIP */ 6974 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6975 /* Enable initial LIP */ 6976 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6977 /* 6978 * clear BIT 15 explicitly as we have seen at 6979 * least a couple of instances where this was set 6980 * and this was causing the firmware to not be 6981 * initialized. 6982 */ 6983 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6984 if (ql2xtgt_tape_enable) 6985 /* Enable FC tape support */ 6986 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6987 else 6988 /* Disable FC tape support */ 6989 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6990 6991 /* Disable Full Login after LIP */ 6992 nv->host_p &= cpu_to_le32(~BIT_10); 6993 /* Enable target PRLI control */ 6994 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6995 6996 /* Change Loop-prefer to Pt-Pt */ 6997 tmp = ~(BIT_4|BIT_5|BIT_6); 6998 nv->firmware_options_2 &= cpu_to_le32(tmp); 6999 tmp = P2P << 4; 7000 nv->firmware_options_2 |= cpu_to_le32(tmp); 7001 } else { 7002 if (ha->tgt.saved_set) { 7003 nv->exchange_count = ha->tgt.saved_exchange_count; 7004 nv->firmware_options_1 = 7005 ha->tgt.saved_firmware_options_1; 7006 nv->firmware_options_2 = 7007 ha->tgt.saved_firmware_options_2; 7008 nv->firmware_options_3 = 7009 ha->tgt.saved_firmware_options_3; 7010 } 7011 return; 7012 } 7013 7014 if (ha->base_qpair->enable_class_2) { 7015 if (vha->flags.init_done) 7016 fc_host_supported_classes(vha->host) = 7017 FC_COS_CLASS2 | FC_COS_CLASS3; 7018 7019 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7020 } else { 7021 if (vha->flags.init_done) 7022 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7023 7024 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7025 } 7026 } 7027 7028 void 7029 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7030 struct init_cb_81xx *icb) 7031 { 7032 struct qla_hw_data *ha = vha->hw; 7033 7034 if (!QLA_TGT_MODE_ENABLED()) 7035 return; 7036 7037 if (ha->tgt.node_name_set) { 7038 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7039 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7040 } 7041 } 7042 7043 void 7044 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7045 { 7046 if (!QLA_TGT_MODE_ENABLED()) 7047 return; 7048 7049 ha->msix_count += 1; /* For ATIO Q */ 7050 } 7051 7052 7053 void 7054 qlt_modify_vp_config(struct scsi_qla_host *vha, 7055 struct vp_config_entry_24xx *vpmod) 7056 { 7057 /* enable target mode. Bit5 = 1 => disable */ 7058 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7059 vpmod->options_idx1 &= ~BIT_5; 7060 7061 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7062 if (qla_tgt_mode_enabled(vha)) 7063 vpmod->options_idx1 &= ~BIT_4; 7064 } 7065 7066 void 7067 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7068 { 7069 int rc; 7070 7071 if (!QLA_TGT_MODE_ENABLED()) 7072 return; 7073 7074 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7075 IS_QLA28XX(ha)) { 7076 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7077 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7078 } else { 7079 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7080 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7081 } 7082 7083 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7084 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7085 7086 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7087 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7088 qlt_unknown_atio_work_fn); 7089 7090 qlt_clear_mode(base_vha); 7091 7092 rc = btree_init32(&ha->tgt.host_map); 7093 if (rc) 7094 ql_log(ql_log_info, base_vha, 0xd03d, 7095 "Unable to initialize ha->host_map btree\n"); 7096 7097 qlt_update_vp_map(base_vha, SET_VP_IDX); 7098 } 7099 7100 irqreturn_t 7101 qla83xx_msix_atio_q(int irq, void *dev_id) 7102 { 7103 struct rsp_que *rsp; 7104 scsi_qla_host_t *vha; 7105 struct qla_hw_data *ha; 7106 unsigned long flags; 7107 7108 rsp = (struct rsp_que *) dev_id; 7109 ha = rsp->hw; 7110 vha = pci_get_drvdata(ha->pdev); 7111 7112 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7113 7114 qlt_24xx_process_atio_queue(vha, 0); 7115 7116 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7117 7118 return IRQ_HANDLED; 7119 } 7120 7121 static void 7122 qlt_handle_abts_recv_work(struct work_struct *work) 7123 { 7124 struct qla_tgt_sess_op *op = container_of(work, 7125 struct qla_tgt_sess_op, work); 7126 scsi_qla_host_t *vha = op->vha; 7127 struct qla_hw_data *ha = vha->hw; 7128 unsigned long flags; 7129 7130 if (qla2x00_reset_active(vha) || 7131 (op->chip_reset != ha->base_qpair->chip_reset)) 7132 return; 7133 7134 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7135 qlt_24xx_process_atio_queue(vha, 0); 7136 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7137 7138 spin_lock_irqsave(&ha->hardware_lock, flags); 7139 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7140 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7141 7142 kfree(op); 7143 } 7144 7145 void 7146 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7147 response_t *pkt) 7148 { 7149 struct qla_tgt_sess_op *op; 7150 7151 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7152 7153 if (!op) { 7154 /* do not reach for ATIO queue here. This is best effort err 7155 * recovery at this point. 7156 */ 7157 qlt_response_pkt_all_vps(vha, rsp, pkt); 7158 return; 7159 } 7160 7161 memcpy(&op->atio, pkt, sizeof(*pkt)); 7162 op->vha = vha; 7163 op->chip_reset = vha->hw->base_qpair->chip_reset; 7164 op->rsp = rsp; 7165 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7166 queue_work(qla_tgt_wq, &op->work); 7167 return; 7168 } 7169 7170 int 7171 qlt_mem_alloc(struct qla_hw_data *ha) 7172 { 7173 if (!QLA_TGT_MODE_ENABLED()) 7174 return 0; 7175 7176 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7177 sizeof(struct qla_tgt_vp_map), 7178 GFP_KERNEL); 7179 if (!ha->tgt.tgt_vp_map) 7180 return -ENOMEM; 7181 7182 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7183 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7184 &ha->tgt.atio_dma, GFP_KERNEL); 7185 if (!ha->tgt.atio_ring) { 7186 kfree(ha->tgt.tgt_vp_map); 7187 return -ENOMEM; 7188 } 7189 return 0; 7190 } 7191 7192 void 7193 qlt_mem_free(struct qla_hw_data *ha) 7194 { 7195 if (!QLA_TGT_MODE_ENABLED()) 7196 return; 7197 7198 if (ha->tgt.atio_ring) { 7199 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7200 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7201 ha->tgt.atio_dma); 7202 } 7203 ha->tgt.atio_ring = NULL; 7204 ha->tgt.atio_dma = 0; 7205 kfree(ha->tgt.tgt_vp_map); 7206 ha->tgt.tgt_vp_map = NULL; 7207 } 7208 7209 /* vport_slock to be held by the caller */ 7210 void 7211 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7212 { 7213 void *slot; 7214 u32 key; 7215 int rc; 7216 7217 if (!QLA_TGT_MODE_ENABLED()) 7218 return; 7219 7220 key = vha->d_id.b24; 7221 7222 switch (cmd) { 7223 case SET_VP_IDX: 7224 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7225 break; 7226 case SET_AL_PA: 7227 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7228 if (!slot) { 7229 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7230 "Save vha in host_map %p %06x\n", vha, key); 7231 rc = btree_insert32(&vha->hw->tgt.host_map, 7232 key, vha, GFP_ATOMIC); 7233 if (rc) 7234 ql_log(ql_log_info, vha, 0xd03e, 7235 "Unable to insert s_id into host_map: %06x\n", 7236 key); 7237 return; 7238 } 7239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7240 "replace existing vha in host_map %p %06x\n", vha, key); 7241 btree_update32(&vha->hw->tgt.host_map, key, vha); 7242 break; 7243 case RESET_VP_IDX: 7244 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7245 break; 7246 case RESET_AL_PA: 7247 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7248 "clear vha in host_map %p %06x\n", vha, key); 7249 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7250 if (slot) 7251 btree_remove32(&vha->hw->tgt.host_map, key); 7252 vha->d_id.b24 = 0; 7253 break; 7254 } 7255 } 7256 7257 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7258 { 7259 7260 if (!vha->d_id.b24) { 7261 vha->d_id = id; 7262 qlt_update_vp_map(vha, SET_AL_PA); 7263 } else if (vha->d_id.b24 != id.b24) { 7264 qlt_update_vp_map(vha, RESET_AL_PA); 7265 vha->d_id = id; 7266 qlt_update_vp_map(vha, SET_AL_PA); 7267 } 7268 } 7269 7270 static int __init qlt_parse_ini_mode(void) 7271 { 7272 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7273 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7274 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7275 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7276 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7277 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7278 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7279 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7280 else 7281 return false; 7282 7283 return true; 7284 } 7285 7286 int __init qlt_init(void) 7287 { 7288 int ret; 7289 7290 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7291 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7292 7293 if (!qlt_parse_ini_mode()) { 7294 ql_log(ql_log_fatal, NULL, 0xe06b, 7295 "qlt_parse_ini_mode() failed\n"); 7296 return -EINVAL; 7297 } 7298 7299 if (!QLA_TGT_MODE_ENABLED()) 7300 return 0; 7301 7302 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7303 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7304 qla_tgt_mgmt_cmd), 0, NULL); 7305 if (!qla_tgt_mgmt_cmd_cachep) { 7306 ql_log(ql_log_fatal, NULL, 0xd04b, 7307 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7308 return -ENOMEM; 7309 } 7310 7311 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7312 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7313 0, NULL); 7314 7315 if (!qla_tgt_plogi_cachep) { 7316 ql_log(ql_log_fatal, NULL, 0xe06d, 7317 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7318 ret = -ENOMEM; 7319 goto out_mgmt_cmd_cachep; 7320 } 7321 7322 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7323 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7324 if (!qla_tgt_mgmt_cmd_mempool) { 7325 ql_log(ql_log_fatal, NULL, 0xe06e, 7326 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7327 ret = -ENOMEM; 7328 goto out_plogi_cachep; 7329 } 7330 7331 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7332 if (!qla_tgt_wq) { 7333 ql_log(ql_log_fatal, NULL, 0xe06f, 7334 "alloc_workqueue for qla_tgt_wq failed\n"); 7335 ret = -ENOMEM; 7336 goto out_cmd_mempool; 7337 } 7338 /* 7339 * Return 1 to signal that initiator-mode is being disabled 7340 */ 7341 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7342 7343 out_cmd_mempool: 7344 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7345 out_plogi_cachep: 7346 kmem_cache_destroy(qla_tgt_plogi_cachep); 7347 out_mgmt_cmd_cachep: 7348 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7349 return ret; 7350 } 7351 7352 void qlt_exit(void) 7353 { 7354 if (!QLA_TGT_MODE_ENABLED()) 7355 return; 7356 7357 destroy_workqueue(qla_tgt_wq); 7358 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7359 kmem_cache_destroy(qla_tgt_plogi_cachep); 7360 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7361 } 7362