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 #include <target/target_core_base.h> 31 #include <target/target_core_fabric.h> 32 33 #include "qla_def.h" 34 #include "qla_target.h" 35 36 static int ql2xtgt_tape_enable; 37 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 38 MODULE_PARM_DESC(ql2xtgt_tape_enable, 39 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 40 41 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 42 module_param(qlini_mode, charp, S_IRUGO); 43 MODULE_PARM_DESC(qlini_mode, 44 "Determines when initiator mode will be enabled. Possible values: " 45 "\"exclusive\" - initiator mode will be enabled on load, " 46 "disabled on enabling target mode and then on disabling target mode " 47 "enabled back; " 48 "\"disabled\" - initiator mode will never be enabled; " 49 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 50 "when ready " 51 "\"enabled\" (default) - initiator mode will always stay enabled."); 52 53 static int ql_dm_tgt_ex_pct = 0; 54 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 55 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 56 "For Dual Mode (qlini_mode=dual), this parameter determines " 57 "the percentage of exchanges/cmds FW will allocate resources " 58 "for Target mode."); 59 60 int ql2xuctrlirq = 1; 61 module_param(ql2xuctrlirq, int, 0644); 62 MODULE_PARM_DESC(ql2xuctrlirq, 63 "User to control IRQ placement via smp_affinity." 64 "Valid with qlini_mode=disabled." 65 "1(default): enable"); 66 67 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 68 69 static int qla_sam_status = SAM_STAT_BUSY; 70 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 71 72 /* 73 * From scsi/fc/fc_fcp.h 74 */ 75 enum fcp_resp_rsp_codes { 76 FCP_TMF_CMPL = 0, 77 FCP_DATA_LEN_INVALID = 1, 78 FCP_CMND_FIELDS_INVALID = 2, 79 FCP_DATA_PARAM_MISMATCH = 3, 80 FCP_TMF_REJECTED = 4, 81 FCP_TMF_FAILED = 5, 82 FCP_TMF_INVALID_LUN = 9, 83 }; 84 85 /* 86 * fc_pri_ta from scsi/fc/fc_fcp.h 87 */ 88 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 89 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 90 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 91 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 92 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 93 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 94 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 95 96 /* 97 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 98 * must be called under HW lock and could unlock/lock it inside. 99 * It isn't an issue, since in the current implementation on the time when 100 * those functions are called: 101 * 102 * - Either context is IRQ and only IRQ handler can modify HW data, 103 * including rings related fields, 104 * 105 * - Or access to target mode variables from struct qla_tgt doesn't 106 * cross those functions boundaries, except tgt_stop, which 107 * additionally protected by irq_cmd_count. 108 */ 109 /* Predefs for callbacks handed to qla2xxx LLD */ 110 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 111 struct atio_from_isp *pkt, uint8_t); 112 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 113 response_t *pkt); 114 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 115 int fn, void *iocb, int flags); 116 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 118 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 119 struct atio_from_isp *atio, uint16_t status, int qfull); 120 static void qlt_disable_vha(struct scsi_qla_host *vha); 121 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 122 static void qlt_send_notify_ack(struct qla_qpair *qpair, 123 struct imm_ntfy_from_isp *ntfy, 124 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 125 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 126 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 127 struct imm_ntfy_from_isp *imm, int ha_locked); 128 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 129 fc_port_t *fcport, bool local); 130 void qlt_unreg_sess(struct fc_port *sess); 131 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 132 struct abts_recv_from_24xx *); 133 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 134 uint16_t); 135 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 136 static inline uint32_t qlt_make_handle(struct qla_qpair *); 137 138 /* 139 * Global Variables 140 */ 141 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 142 struct kmem_cache *qla_tgt_plogi_cachep; 143 static mempool_t *qla_tgt_mgmt_cmd_mempool; 144 static struct workqueue_struct *qla_tgt_wq; 145 static DEFINE_MUTEX(qla_tgt_mutex); 146 static LIST_HEAD(qla_tgt_glist); 147 148 static const char *prot_op_str(u32 prot_op) 149 { 150 switch (prot_op) { 151 case TARGET_PROT_NORMAL: return "NORMAL"; 152 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 153 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 154 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 155 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 156 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 157 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 158 default: return "UNKNOWN"; 159 } 160 } 161 162 /* This API intentionally takes dest as a parameter, rather than returning 163 * int value to avoid caller forgetting to issue wmb() after the store */ 164 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 165 { 166 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 167 *dest = atomic_inc_return(&base_vha->generation_tick); 168 /* memory barrier */ 169 wmb(); 170 } 171 172 /* Might release hw lock, then reaquire!! */ 173 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 174 { 175 /* Send marker if required */ 176 if (unlikely(vha->marker_needed != 0)) { 177 int rc = qla2x00_issue_marker(vha, vha_locked); 178 179 if (rc != QLA_SUCCESS) { 180 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 181 "qla_target(%d): issue_marker() failed\n", 182 vha->vp_idx); 183 } 184 return rc; 185 } 186 return QLA_SUCCESS; 187 } 188 189 static inline 190 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 191 be_id_t d_id) 192 { 193 struct scsi_qla_host *host; 194 uint32_t key; 195 196 if (vha->d_id.b.area == d_id.area && 197 vha->d_id.b.domain == d_id.domain && 198 vha->d_id.b.al_pa == d_id.al_pa) 199 return vha; 200 201 key = be_to_port_id(d_id).b24; 202 203 host = btree_lookup32(&vha->hw->tgt.host_map, key); 204 if (!host) 205 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 206 "Unable to find host %06x\n", key); 207 208 return host; 209 } 210 211 static inline 212 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 213 uint16_t vp_idx) 214 { 215 struct qla_hw_data *ha = vha->hw; 216 217 if (vha->vp_idx == vp_idx) 218 return vha; 219 220 BUG_ON(ha->tgt.tgt_vp_map == NULL); 221 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 222 return ha->tgt.tgt_vp_map[vp_idx].vha; 223 224 return NULL; 225 } 226 227 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 228 { 229 unsigned long flags; 230 231 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 232 233 vha->hw->tgt.num_pend_cmds++; 234 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 235 vha->qla_stats.stat_max_pend_cmds = 236 vha->hw->tgt.num_pend_cmds; 237 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 238 } 239 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 240 { 241 unsigned long flags; 242 243 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 244 vha->hw->tgt.num_pend_cmds--; 245 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 246 } 247 248 249 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 250 struct atio_from_isp *atio, uint8_t ha_locked) 251 { 252 struct qla_tgt_sess_op *u; 253 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 254 unsigned long flags; 255 256 if (tgt->tgt_stop) { 257 ql_dbg(ql_dbg_async, vha, 0x502c, 258 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 259 vha->vp_idx); 260 goto out_term; 261 } 262 263 u = kzalloc(sizeof(*u), GFP_ATOMIC); 264 if (u == NULL) 265 goto out_term; 266 267 u->vha = vha; 268 memcpy(&u->atio, atio, sizeof(*atio)); 269 INIT_LIST_HEAD(&u->cmd_list); 270 271 spin_lock_irqsave(&vha->cmd_list_lock, flags); 272 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 273 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 274 275 schedule_delayed_work(&vha->unknown_atio_work, 1); 276 277 out: 278 return; 279 280 out_term: 281 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 282 goto out; 283 } 284 285 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 286 uint8_t ha_locked) 287 { 288 struct qla_tgt_sess_op *u, *t; 289 scsi_qla_host_t *host; 290 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 291 unsigned long flags; 292 uint8_t queued = 0; 293 294 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 295 if (u->aborted) { 296 ql_dbg(ql_dbg_async, vha, 0x502e, 297 "Freeing unknown %s %p, because of Abort\n", 298 "ATIO_TYPE7", u); 299 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 300 &u->atio, ha_locked, 0); 301 goto abort; 302 } 303 304 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 305 if (host != NULL) { 306 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 307 "Requeuing unknown ATIO_TYPE7 %p\n", u); 308 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 309 } else if (tgt->tgt_stop) { 310 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 311 "Freeing unknown %s %p, because tgt is being stopped\n", 312 "ATIO_TYPE7", u); 313 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 314 &u->atio, ha_locked, 0); 315 } else { 316 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 317 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 318 if (!queued) { 319 queued = 1; 320 schedule_delayed_work(&vha->unknown_atio_work, 321 1); 322 } 323 continue; 324 } 325 326 abort: 327 spin_lock_irqsave(&vha->cmd_list_lock, flags); 328 list_del(&u->cmd_list); 329 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 330 kfree(u); 331 } 332 } 333 334 void qlt_unknown_atio_work_fn(struct work_struct *work) 335 { 336 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 337 struct scsi_qla_host, unknown_atio_work); 338 339 qlt_try_to_dequeue_unknown_atios(vha, 0); 340 } 341 342 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 343 struct atio_from_isp *atio, uint8_t ha_locked) 344 { 345 ql_dbg(ql_dbg_tgt, vha, 0xe072, 346 "%s: qla_target(%d): type %x ox_id %04x\n", 347 __func__, vha->vp_idx, atio->u.raw.entry_type, 348 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 349 350 switch (atio->u.raw.entry_type) { 351 case ATIO_TYPE7: 352 { 353 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 354 atio->u.isp24.fcp_hdr.d_id); 355 if (unlikely(NULL == host)) { 356 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 357 "qla_target(%d): Received ATIO_TYPE7 " 358 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 359 atio->u.isp24.fcp_hdr.d_id.domain, 360 atio->u.isp24.fcp_hdr.d_id.area, 361 atio->u.isp24.fcp_hdr.d_id.al_pa); 362 363 364 qlt_queue_unknown_atio(vha, atio, ha_locked); 365 break; 366 } 367 if (unlikely(!list_empty(&vha->unknown_atio_list))) 368 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 369 370 qlt_24xx_atio_pkt(host, atio, ha_locked); 371 break; 372 } 373 374 case IMMED_NOTIFY_TYPE: 375 { 376 struct scsi_qla_host *host = vha; 377 struct imm_ntfy_from_isp *entry = 378 (struct imm_ntfy_from_isp *)atio; 379 380 qlt_issue_marker(vha, ha_locked); 381 382 if ((entry->u.isp24.vp_index != 0xFF) && 383 (entry->u.isp24.nport_handle != 0xFFFF)) { 384 host = qlt_find_host_by_vp_idx(vha, 385 entry->u.isp24.vp_index); 386 if (unlikely(!host)) { 387 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 388 "qla_target(%d): Received " 389 "ATIO (IMMED_NOTIFY_TYPE) " 390 "with unknown vp_index %d\n", 391 vha->vp_idx, entry->u.isp24.vp_index); 392 break; 393 } 394 } 395 qlt_24xx_atio_pkt(host, atio, ha_locked); 396 break; 397 } 398 399 case VP_RPT_ID_IOCB_TYPE: 400 qla24xx_report_id_acquisition(vha, 401 (struct vp_rpt_id_entry_24xx *)atio); 402 break; 403 404 case ABTS_RECV_24XX: 405 { 406 struct abts_recv_from_24xx *entry = 407 (struct abts_recv_from_24xx *)atio; 408 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 409 entry->vp_index); 410 unsigned long flags; 411 412 if (unlikely(!host)) { 413 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 414 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 415 "received, with unknown vp_index %d\n", 416 vha->vp_idx, entry->vp_index); 417 break; 418 } 419 if (!ha_locked) 420 spin_lock_irqsave(&host->hw->hardware_lock, flags); 421 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 422 if (!ha_locked) 423 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 424 break; 425 } 426 427 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 428 429 default: 430 ql_dbg(ql_dbg_tgt, vha, 0xe040, 431 "qla_target(%d): Received unknown ATIO atio " 432 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 433 break; 434 } 435 436 return false; 437 } 438 439 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 440 struct rsp_que *rsp, response_t *pkt) 441 { 442 switch (pkt->entry_type) { 443 case CTIO_CRC2: 444 ql_dbg(ql_dbg_tgt, vha, 0xe073, 445 "qla_target(%d):%s: CRC2 Response pkt\n", 446 vha->vp_idx, __func__); 447 /* fall through */ 448 case CTIO_TYPE7: 449 { 450 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 451 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 452 entry->vp_index); 453 if (unlikely(!host)) { 454 ql_dbg(ql_dbg_tgt, vha, 0xe041, 455 "qla_target(%d): Response pkt (CTIO_TYPE7) " 456 "received, with unknown vp_index %d\n", 457 vha->vp_idx, entry->vp_index); 458 break; 459 } 460 qlt_response_pkt(host, rsp, pkt); 461 break; 462 } 463 464 case IMMED_NOTIFY_TYPE: 465 { 466 struct scsi_qla_host *host; 467 struct imm_ntfy_from_isp *entry = 468 (struct imm_ntfy_from_isp *)pkt; 469 470 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 471 if (unlikely(!host)) { 472 ql_dbg(ql_dbg_tgt, vha, 0xe042, 473 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 474 "received, with unknown vp_index %d\n", 475 vha->vp_idx, entry->u.isp24.vp_index); 476 break; 477 } 478 qlt_response_pkt(host, rsp, pkt); 479 break; 480 } 481 482 case NOTIFY_ACK_TYPE: 483 { 484 struct scsi_qla_host *host = vha; 485 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 486 487 if (0xFF != entry->u.isp24.vp_index) { 488 host = qlt_find_host_by_vp_idx(vha, 489 entry->u.isp24.vp_index); 490 if (unlikely(!host)) { 491 ql_dbg(ql_dbg_tgt, vha, 0xe043, 492 "qla_target(%d): Response " 493 "pkt (NOTIFY_ACK_TYPE) " 494 "received, with unknown " 495 "vp_index %d\n", vha->vp_idx, 496 entry->u.isp24.vp_index); 497 break; 498 } 499 } 500 qlt_response_pkt(host, rsp, pkt); 501 break; 502 } 503 504 case ABTS_RECV_24XX: 505 { 506 struct abts_recv_from_24xx *entry = 507 (struct abts_recv_from_24xx *)pkt; 508 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 509 entry->vp_index); 510 if (unlikely(!host)) { 511 ql_dbg(ql_dbg_tgt, vha, 0xe044, 512 "qla_target(%d): Response pkt " 513 "(ABTS_RECV_24XX) received, with unknown " 514 "vp_index %d\n", vha->vp_idx, entry->vp_index); 515 break; 516 } 517 qlt_response_pkt(host, rsp, pkt); 518 break; 519 } 520 521 case ABTS_RESP_24XX: 522 { 523 struct abts_resp_to_24xx *entry = 524 (struct abts_resp_to_24xx *)pkt; 525 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 526 entry->vp_index); 527 if (unlikely(!host)) { 528 ql_dbg(ql_dbg_tgt, vha, 0xe045, 529 "qla_target(%d): Response pkt " 530 "(ABTS_RECV_24XX) received, with unknown " 531 "vp_index %d\n", vha->vp_idx, entry->vp_index); 532 break; 533 } 534 qlt_response_pkt(host, rsp, pkt); 535 break; 536 } 537 default: 538 qlt_response_pkt(vha, rsp, pkt); 539 break; 540 } 541 542 } 543 544 /* 545 * All qlt_plogi_ack_t operations are protected by hardware_lock 546 */ 547 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 548 struct imm_ntfy_from_isp *ntfy, int type) 549 { 550 struct qla_work_evt *e; 551 552 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 553 if (!e) 554 return QLA_FUNCTION_FAILED; 555 556 e->u.nack.fcport = fcport; 557 e->u.nack.type = type; 558 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 559 return qla2x00_post_work(vha, e); 560 } 561 562 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 563 { 564 struct scsi_qla_host *vha = sp->vha; 565 unsigned long flags; 566 567 ql_dbg(ql_dbg_disc, vha, 0x20f2, 568 "Async done-%s res %x %8phC type %d\n", 569 sp->name, res, sp->fcport->port_name, sp->type); 570 571 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 572 sp->fcport->flags &= ~FCF_ASYNC_SENT; 573 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 574 575 switch (sp->type) { 576 case SRB_NACK_PLOGI: 577 sp->fcport->login_gen++; 578 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 579 sp->fcport->logout_on_delete = 1; 580 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 581 sp->fcport->send_els_logo = 0; 582 break; 583 584 case SRB_NACK_PRLI: 585 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 586 sp->fcport->deleted = 0; 587 sp->fcport->send_els_logo = 0; 588 589 if (!sp->fcport->login_succ && 590 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 591 sp->fcport->login_succ = 1; 592 593 vha->fcport_count++; 594 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 595 qla24xx_sched_upd_fcport(sp->fcport); 596 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 597 } else { 598 sp->fcport->login_retry = 0; 599 qla2x00_set_fcport_disc_state(sp->fcport, 600 DSC_LOGIN_COMPLETE); 601 sp->fcport->deleted = 0; 602 sp->fcport->logout_on_delete = 1; 603 } 604 break; 605 606 case SRB_NACK_LOGO: 607 sp->fcport->login_gen++; 608 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 609 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 610 break; 611 } 612 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 613 614 sp->free(sp); 615 } 616 617 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 618 struct imm_ntfy_from_isp *ntfy, int type) 619 { 620 int rval = QLA_FUNCTION_FAILED; 621 srb_t *sp; 622 char *c = NULL; 623 624 fcport->flags |= FCF_ASYNC_SENT; 625 switch (type) { 626 case SRB_NACK_PLOGI: 627 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 628 c = "PLOGI"; 629 break; 630 case SRB_NACK_PRLI: 631 fcport->fw_login_state = DSC_LS_PRLI_PEND; 632 fcport->deleted = 0; 633 c = "PRLI"; 634 break; 635 case SRB_NACK_LOGO: 636 fcport->fw_login_state = DSC_LS_LOGO_PEND; 637 c = "LOGO"; 638 break; 639 } 640 641 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 642 if (!sp) 643 goto done; 644 645 sp->type = type; 646 sp->name = "nack"; 647 648 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 649 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 650 651 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 652 sp->done = qla2x00_async_nack_sp_done; 653 654 ql_dbg(ql_dbg_disc, vha, 0x20f4, 655 "Async-%s %8phC hndl %x %s\n", 656 sp->name, fcport->port_name, sp->handle, c); 657 658 rval = qla2x00_start_sp(sp); 659 if (rval != QLA_SUCCESS) 660 goto done_free_sp; 661 662 return rval; 663 664 done_free_sp: 665 sp->free(sp); 666 done: 667 fcport->flags &= ~FCF_ASYNC_SENT; 668 return rval; 669 } 670 671 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 672 { 673 fc_port_t *t; 674 675 switch (e->u.nack.type) { 676 case SRB_NACK_PRLI: 677 t = e->u.nack.fcport; 678 flush_work(&t->del_work); 679 flush_work(&t->free_work); 680 mutex_lock(&vha->vha_tgt.tgt_mutex); 681 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 682 mutex_unlock(&vha->vha_tgt.tgt_mutex); 683 if (t) { 684 ql_log(ql_log_info, vha, 0xd034, 685 "%s create sess success %p", __func__, t); 686 /* create sess has an extra kref */ 687 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 688 } 689 break; 690 } 691 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 692 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 693 } 694 695 void qla24xx_delete_sess_fn(struct work_struct *work) 696 { 697 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 698 struct qla_hw_data *ha = fcport->vha->hw; 699 700 if (fcport->se_sess) { 701 ha->tgt.tgt_ops->shutdown_sess(fcport); 702 ha->tgt.tgt_ops->put_sess(fcport); 703 } else { 704 qlt_unreg_sess(fcport); 705 } 706 } 707 708 /* 709 * Called from qla2x00_reg_remote_port() 710 */ 711 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 712 { 713 struct qla_hw_data *ha = vha->hw; 714 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 715 struct fc_port *sess = fcport; 716 unsigned long flags; 717 718 if (!vha->hw->tgt.tgt_ops) 719 return; 720 721 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 722 if (tgt->tgt_stop) { 723 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 724 return; 725 } 726 727 if (fcport->disc_state == DSC_DELETE_PEND) { 728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 729 return; 730 } 731 732 if (!sess->se_sess) { 733 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 734 735 mutex_lock(&vha->vha_tgt.tgt_mutex); 736 sess = qlt_create_sess(vha, fcport, false); 737 mutex_unlock(&vha->vha_tgt.tgt_mutex); 738 739 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 740 } else { 741 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 743 return; 744 } 745 746 if (!kref_get_unless_zero(&sess->sess_kref)) { 747 ql_dbg(ql_dbg_disc, vha, 0x2107, 748 "%s: kref_get fail sess %8phC \n", 749 __func__, sess->port_name); 750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 751 return; 752 } 753 754 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 755 "qla_target(%u): %ssession for port %8phC " 756 "(loop ID %d) reappeared\n", vha->vp_idx, 757 sess->local ? "local " : "", sess->port_name, sess->loop_id); 758 759 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 760 "Reappeared sess %p\n", sess); 761 762 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 763 fcport->loop_id, 764 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 765 } 766 767 if (sess && sess->local) { 768 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 769 "qla_target(%u): local session for " 770 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 771 fcport->port_name, sess->loop_id); 772 sess->local = 0; 773 } 774 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 775 776 ha->tgt.tgt_ops->put_sess(sess); 777 } 778 779 /* 780 * This is a zero-base ref-counting solution, since hardware_lock 781 * guarantees that ref_count is not modified concurrently. 782 * Upon successful return content of iocb is undefined 783 */ 784 static struct qlt_plogi_ack_t * 785 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 786 struct imm_ntfy_from_isp *iocb) 787 { 788 struct qlt_plogi_ack_t *pla; 789 790 lockdep_assert_held(&vha->hw->hardware_lock); 791 792 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 793 if (pla->id.b24 == id->b24) { 794 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 795 "%s %d %8phC Term INOT due to new INOT", 796 __func__, __LINE__, 797 pla->iocb.u.isp24.port_name); 798 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 799 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 800 return pla; 801 } 802 } 803 804 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 805 if (!pla) { 806 ql_dbg(ql_dbg_async, vha, 0x5088, 807 "qla_target(%d): Allocation of plogi_ack failed\n", 808 vha->vp_idx); 809 return NULL; 810 } 811 812 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 813 pla->id = *id; 814 list_add_tail(&pla->list, &vha->plogi_ack_list); 815 816 return pla; 817 } 818 819 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 820 struct qlt_plogi_ack_t *pla) 821 { 822 struct imm_ntfy_from_isp *iocb = &pla->iocb; 823 port_id_t port_id; 824 uint16_t loop_id; 825 fc_port_t *fcport = pla->fcport; 826 827 BUG_ON(!pla->ref_count); 828 pla->ref_count--; 829 830 if (pla->ref_count) 831 return; 832 833 ql_dbg(ql_dbg_disc, vha, 0x5089, 834 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 835 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 836 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 837 iocb->u.isp24.port_id[0], 838 le16_to_cpu(iocb->u.isp24.nport_handle), 839 iocb->u.isp24.exchange_address, iocb->ox_id); 840 841 port_id.b.domain = iocb->u.isp24.port_id[2]; 842 port_id.b.area = iocb->u.isp24.port_id[1]; 843 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 844 port_id.b.rsvd_1 = 0; 845 846 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 847 848 fcport->loop_id = loop_id; 849 fcport->d_id = port_id; 850 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 852 else 853 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 854 855 list_for_each_entry(fcport, &vha->vp_fcports, list) { 856 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 857 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 858 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 859 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 860 } 861 862 list_del(&pla->list); 863 kmem_cache_free(qla_tgt_plogi_cachep, pla); 864 } 865 866 void 867 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 868 struct fc_port *sess, enum qlt_plogi_link_t link) 869 { 870 struct imm_ntfy_from_isp *iocb = &pla->iocb; 871 /* Inc ref_count first because link might already be pointing at pla */ 872 pla->ref_count++; 873 874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 875 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 876 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 877 sess, link, sess->port_name, 878 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 879 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 880 pla->ref_count, pla, link); 881 882 if (link == QLT_PLOGI_LINK_CONFLICT) { 883 switch (sess->disc_state) { 884 case DSC_DELETED: 885 case DSC_DELETE_PEND: 886 pla->ref_count--; 887 return; 888 default: 889 break; 890 } 891 } 892 893 if (sess->plogi_link[link]) 894 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 895 896 if (link == QLT_PLOGI_LINK_SAME_WWN) 897 pla->fcport = sess; 898 899 sess->plogi_link[link] = pla; 900 } 901 902 typedef struct { 903 /* These fields must be initialized by the caller */ 904 port_id_t id; 905 /* 906 * number of cmds dropped while we were waiting for 907 * initiator to ack LOGO initialize to 1 if LOGO is 908 * triggered by a command, otherwise, to 0 909 */ 910 int cmd_count; 911 912 /* These fields are used by callee */ 913 struct list_head list; 914 } qlt_port_logo_t; 915 916 static void 917 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 918 { 919 qlt_port_logo_t *tmp; 920 int res; 921 922 mutex_lock(&vha->vha_tgt.tgt_mutex); 923 924 list_for_each_entry(tmp, &vha->logo_list, list) { 925 if (tmp->id.b24 == logo->id.b24) { 926 tmp->cmd_count += logo->cmd_count; 927 mutex_unlock(&vha->vha_tgt.tgt_mutex); 928 return; 929 } 930 } 931 932 list_add_tail(&logo->list, &vha->logo_list); 933 934 mutex_unlock(&vha->vha_tgt.tgt_mutex); 935 936 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 937 938 mutex_lock(&vha->vha_tgt.tgt_mutex); 939 list_del(&logo->list); 940 mutex_unlock(&vha->vha_tgt.tgt_mutex); 941 942 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 943 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 944 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 945 logo->cmd_count, res); 946 } 947 948 void qlt_free_session_done(struct work_struct *work) 949 { 950 struct fc_port *sess = container_of(work, struct fc_port, 951 free_work); 952 struct qla_tgt *tgt = sess->tgt; 953 struct scsi_qla_host *vha = sess->vha; 954 struct qla_hw_data *ha = vha->hw; 955 unsigned long flags; 956 bool logout_started = false; 957 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 958 struct qlt_plogi_ack_t *own = 959 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 960 961 ql_dbg(ql_dbg_disc, vha, 0xf084, 962 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 963 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 964 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 965 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 966 sess->logout_on_delete, sess->keep_nport_handle, 967 sess->send_els_logo); 968 969 if (!IS_SW_RESV_ADDR(sess->d_id)) { 970 qla2x00_mark_device_lost(vha, sess, 0); 971 972 if (sess->send_els_logo) { 973 qlt_port_logo_t logo; 974 975 logo.id = sess->d_id; 976 logo.cmd_count = 0; 977 if (!own) 978 qlt_send_first_logo(vha, &logo); 979 sess->send_els_logo = 0; 980 } 981 982 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 983 int rc; 984 985 if (!own || 986 (own && 987 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 988 rc = qla2x00_post_async_logout_work(vha, sess, 989 NULL); 990 if (rc != QLA_SUCCESS) 991 ql_log(ql_log_warn, vha, 0xf085, 992 "Schedule logo failed sess %p rc %d\n", 993 sess, rc); 994 else 995 logout_started = true; 996 } else if (own && (own->iocb.u.isp24.status_subcode == 997 ELS_PRLI) && ha->flags.rida_fmt2) { 998 rc = qla2x00_post_async_prlo_work(vha, sess, 999 NULL); 1000 if (rc != QLA_SUCCESS) 1001 ql_log(ql_log_warn, vha, 0xf085, 1002 "Schedule PRLO failed sess %p rc %d\n", 1003 sess, rc); 1004 else 1005 logout_started = true; 1006 } 1007 } /* if sess->logout_on_delete */ 1008 1009 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1010 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1011 sess->nvme_flag |= NVME_FLAG_DELETING; 1012 qla_nvme_unregister_remote_port(sess); 1013 } 1014 } 1015 1016 /* 1017 * Release the target session for FC Nexus from fabric module code. 1018 */ 1019 if (sess->se_sess != NULL) 1020 ha->tgt.tgt_ops->free_session(sess); 1021 1022 if (logout_started) { 1023 bool traced = false; 1024 u16 cnt = 0; 1025 1026 while (!READ_ONCE(sess->logout_completed)) { 1027 if (!traced) { 1028 ql_dbg(ql_dbg_disc, vha, 0xf086, 1029 "%s: waiting for sess %p logout\n", 1030 __func__, sess); 1031 traced = true; 1032 } 1033 msleep(100); 1034 cnt++; 1035 if (cnt > 200) 1036 break; 1037 } 1038 1039 ql_dbg(ql_dbg_disc, vha, 0xf087, 1040 "%s: sess %p logout completed\n", __func__, sess); 1041 } 1042 1043 if (sess->logo_ack_needed) { 1044 sess->logo_ack_needed = 0; 1045 qla24xx_async_notify_ack(vha, sess, 1046 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1047 } 1048 1049 spin_lock_irqsave(&vha->work_lock, flags); 1050 sess->flags &= ~FCF_ASYNC_SENT; 1051 spin_unlock_irqrestore(&vha->work_lock, flags); 1052 1053 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1054 if (sess->se_sess) { 1055 sess->se_sess = NULL; 1056 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1057 tgt->sess_count--; 1058 } 1059 1060 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1061 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1062 sess->deleted = QLA_SESS_DELETED; 1063 1064 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1065 vha->fcport_count--; 1066 sess->login_succ = 0; 1067 } 1068 1069 qla2x00_clear_loop_id(sess); 1070 1071 if (sess->conflict) { 1072 sess->conflict->login_pause = 0; 1073 sess->conflict = NULL; 1074 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1075 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1076 } 1077 1078 { 1079 struct qlt_plogi_ack_t *con = 1080 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1081 struct imm_ntfy_from_isp *iocb; 1082 1083 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1084 1085 if (con) { 1086 iocb = &con->iocb; 1087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1088 "se_sess %p / sess %p port %8phC is gone," 1089 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1090 sess->se_sess, sess, sess->port_name, 1091 own ? "releasing own PLOGI" : "no own PLOGI pending", 1092 own ? own->ref_count : -1, 1093 iocb->u.isp24.port_name, con->ref_count); 1094 qlt_plogi_ack_unref(vha, con); 1095 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1096 } else { 1097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1098 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1099 sess->se_sess, sess, sess->port_name, 1100 own ? "releasing own PLOGI" : 1101 "no own PLOGI pending", 1102 own ? own->ref_count : -1); 1103 } 1104 1105 if (own) { 1106 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1107 qlt_plogi_ack_unref(vha, own); 1108 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1109 } 1110 } 1111 1112 sess->explicit_logout = 0; 1113 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1114 sess->free_pending = 0; 1115 1116 ql_dbg(ql_dbg_disc, vha, 0xf001, 1117 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1118 sess, sess->port_name, vha->fcport_count); 1119 1120 if (tgt && (tgt->sess_count == 0)) 1121 wake_up_all(&tgt->waitQ); 1122 1123 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1124 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1125 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1126 switch (vha->host->active_mode) { 1127 case MODE_INITIATOR: 1128 case MODE_DUAL: 1129 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1130 qla2xxx_wake_dpc(vha); 1131 break; 1132 case MODE_TARGET: 1133 default: 1134 /* no-op */ 1135 break; 1136 } 1137 } 1138 1139 if (vha->fcport_count == 0) 1140 wake_up_all(&vha->fcport_waitQ); 1141 } 1142 1143 /* ha->tgt.sess_lock supposed to be held on entry */ 1144 void qlt_unreg_sess(struct fc_port *sess) 1145 { 1146 struct scsi_qla_host *vha = sess->vha; 1147 unsigned long flags; 1148 1149 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1150 "%s sess %p for deletion %8phC\n", 1151 __func__, sess, sess->port_name); 1152 1153 spin_lock_irqsave(&sess->vha->work_lock, flags); 1154 if (sess->free_pending) { 1155 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1156 return; 1157 } 1158 sess->free_pending = 1; 1159 /* 1160 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1161 * management from being sent. 1162 */ 1163 sess->flags |= FCF_ASYNC_SENT; 1164 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1165 1166 if (sess->se_sess) 1167 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1168 1169 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1170 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1171 sess->last_rscn_gen = sess->rscn_gen; 1172 sess->last_login_gen = sess->login_gen; 1173 1174 queue_work(sess->vha->hw->wq, &sess->free_work); 1175 } 1176 EXPORT_SYMBOL(qlt_unreg_sess); 1177 1178 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1179 { 1180 struct qla_hw_data *ha = vha->hw; 1181 struct fc_port *sess = NULL; 1182 uint16_t loop_id; 1183 int res = 0; 1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1185 unsigned long flags; 1186 1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1188 if (loop_id == 0xFFFF) { 1189 /* Global event */ 1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1194 } else { 1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1198 } 1199 1200 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1201 "Using sess for qla_tgt_reset: %p\n", sess); 1202 if (!sess) { 1203 res = -ESRCH; 1204 return res; 1205 } 1206 1207 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1210 mcmd, loop_id); 1211 1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1213 } 1214 1215 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1216 { 1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1218 sess->logout_on_delete = 0; 1219 sess->logo_ack_needed = 0; 1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1221 } 1222 } 1223 1224 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1225 { 1226 struct qla_tgt *tgt = sess->tgt; 1227 unsigned long flags; 1228 u16 sec; 1229 1230 switch (sess->disc_state) { 1231 case DSC_DELETE_PEND: 1232 return; 1233 case DSC_DELETED: 1234 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1235 wake_up_all(&tgt->waitQ); 1236 if (sess->vha->fcport_count == 0) 1237 wake_up_all(&sess->vha->fcport_waitQ); 1238 1239 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1240 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1241 return; 1242 break; 1243 case DSC_UPD_FCPORT: 1244 /* 1245 * This port is not done reporting to upper layer. 1246 * let it finish 1247 */ 1248 sess->next_disc_state = DSC_DELETE_PEND; 1249 sec = jiffies_to_msecs(jiffies - 1250 sess->jiffies_at_registration)/1000; 1251 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1252 sess->sec_since_registration = sec; 1253 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1254 "%s %8phC : Slow Rport registration(%d Sec)\n", 1255 __func__, sess->port_name, sec); 1256 } 1257 return; 1258 default: 1259 break; 1260 } 1261 1262 spin_lock_irqsave(&sess->vha->work_lock, flags); 1263 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1264 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1265 return; 1266 } 1267 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1268 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1269 1270 sess->prli_pend_timer = 0; 1271 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1272 1273 qla24xx_chk_fcp_state(sess); 1274 1275 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1276 "Scheduling sess %p for deletion %8phC\n", 1277 sess, sess->port_name); 1278 1279 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1280 } 1281 1282 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1283 { 1284 struct fc_port *sess; 1285 scsi_qla_host_t *vha = tgt->vha; 1286 1287 list_for_each_entry(sess, &vha->vp_fcports, list) { 1288 if (sess->se_sess) 1289 qlt_schedule_sess_for_deletion(sess); 1290 } 1291 1292 /* At this point tgt could be already dead */ 1293 } 1294 1295 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1296 uint16_t *loop_id) 1297 { 1298 struct qla_hw_data *ha = vha->hw; 1299 dma_addr_t gid_list_dma; 1300 struct gid_list_info *gid_list, *gid; 1301 int res, rc, i; 1302 uint16_t entries; 1303 1304 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1305 &gid_list_dma, GFP_KERNEL); 1306 if (!gid_list) { 1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1308 "qla_target(%d): DMA Alloc failed of %u\n", 1309 vha->vp_idx, qla2x00_gid_list_size(ha)); 1310 return -ENOMEM; 1311 } 1312 1313 /* Get list of logged in devices */ 1314 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1315 if (rc != QLA_SUCCESS) { 1316 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1317 "qla_target(%d): get_id_list() failed: %x\n", 1318 vha->vp_idx, rc); 1319 res = -EBUSY; 1320 goto out_free_id_list; 1321 } 1322 1323 gid = gid_list; 1324 res = -ENOENT; 1325 for (i = 0; i < entries; i++) { 1326 if (gid->al_pa == s_id.al_pa && 1327 gid->area == s_id.area && 1328 gid->domain == s_id.domain) { 1329 *loop_id = le16_to_cpu(gid->loop_id); 1330 res = 0; 1331 break; 1332 } 1333 gid = (void *)gid + ha->gid_list_info_size; 1334 } 1335 1336 out_free_id_list: 1337 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1338 gid_list, gid_list_dma); 1339 return res; 1340 } 1341 1342 /* 1343 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1344 * Caller must put it. 1345 */ 1346 static struct fc_port *qlt_create_sess( 1347 struct scsi_qla_host *vha, 1348 fc_port_t *fcport, 1349 bool local) 1350 { 1351 struct qla_hw_data *ha = vha->hw; 1352 struct fc_port *sess = fcport; 1353 unsigned long flags; 1354 1355 if (vha->vha_tgt.qla_tgt->tgt_stop) 1356 return NULL; 1357 1358 if (fcport->se_sess) { 1359 if (!kref_get_unless_zero(&sess->sess_kref)) { 1360 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1361 "%s: kref_get_unless_zero failed for %8phC\n", 1362 __func__, sess->port_name); 1363 return NULL; 1364 } 1365 return fcport; 1366 } 1367 sess->tgt = vha->vha_tgt.qla_tgt; 1368 sess->local = local; 1369 1370 /* 1371 * Under normal circumstances we want to logout from firmware when 1372 * session eventually ends and release corresponding nport handle. 1373 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1374 * code will adjust these flags as necessary. 1375 */ 1376 sess->logout_on_delete = 1; 1377 sess->keep_nport_handle = 0; 1378 sess->logout_completed = 0; 1379 1380 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1381 &fcport->port_name[0], sess) < 0) { 1382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1383 "(%d) %8phC check_initiator_node_acl failed\n", 1384 vha->vp_idx, fcport->port_name); 1385 return NULL; 1386 } else { 1387 kref_init(&fcport->sess_kref); 1388 /* 1389 * Take an extra reference to ->sess_kref here to handle 1390 * fc_port access across ->tgt.sess_lock reaquire. 1391 */ 1392 if (!kref_get_unless_zero(&sess->sess_kref)) { 1393 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1394 "%s: kref_get_unless_zero failed for %8phC\n", 1395 __func__, sess->port_name); 1396 return NULL; 1397 } 1398 1399 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1400 if (!IS_SW_RESV_ADDR(sess->d_id)) 1401 vha->vha_tgt.qla_tgt->sess_count++; 1402 1403 qlt_do_generation_tick(vha, &sess->generation); 1404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1405 } 1406 1407 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1408 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1409 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1410 vha->vha_tgt.qla_tgt->sess_count); 1411 1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1413 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1414 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1415 vha->vp_idx, local ? "local " : "", fcport->port_name, 1416 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1417 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1418 1419 return sess; 1420 } 1421 1422 /* 1423 * max_gen - specifies maximum session generation 1424 * at which this deletion requestion is still valid 1425 */ 1426 void 1427 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1428 { 1429 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1430 struct fc_port *sess = fcport; 1431 unsigned long flags; 1432 1433 if (!vha->hw->tgt.tgt_ops) 1434 return; 1435 1436 if (!tgt) 1437 return; 1438 1439 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1440 if (tgt->tgt_stop) { 1441 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1442 return; 1443 } 1444 if (!sess->se_sess) { 1445 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1446 return; 1447 } 1448 1449 if (max_gen - sess->generation < 0) { 1450 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1452 "Ignoring stale deletion request for se_sess %p / sess %p" 1453 " for port %8phC, req_gen %d, sess_gen %d\n", 1454 sess->se_sess, sess, sess->port_name, max_gen, 1455 sess->generation); 1456 return; 1457 } 1458 1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1460 1461 sess->local = 1; 1462 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1463 qlt_schedule_sess_for_deletion(sess); 1464 } 1465 1466 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1467 { 1468 struct qla_hw_data *ha = tgt->ha; 1469 unsigned long flags; 1470 int res; 1471 /* 1472 * We need to protect against race, when tgt is freed before or 1473 * inside wake_up() 1474 */ 1475 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1476 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1477 "tgt %p, sess_count=%d\n", 1478 tgt, tgt->sess_count); 1479 res = (tgt->sess_count == 0); 1480 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1481 1482 return res; 1483 } 1484 1485 /* Called by tcm_qla2xxx configfs code */ 1486 int qlt_stop_phase1(struct qla_tgt *tgt) 1487 { 1488 struct scsi_qla_host *vha = tgt->vha; 1489 struct qla_hw_data *ha = tgt->ha; 1490 unsigned long flags; 1491 1492 mutex_lock(&ha->optrom_mutex); 1493 mutex_lock(&qla_tgt_mutex); 1494 1495 if (tgt->tgt_stop || tgt->tgt_stopped) { 1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1497 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1498 mutex_unlock(&qla_tgt_mutex); 1499 mutex_unlock(&ha->optrom_mutex); 1500 return -EPERM; 1501 } 1502 1503 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1504 vha->host_no, vha); 1505 /* 1506 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1507 * Lock is needed, because we still can get an incoming packet. 1508 */ 1509 mutex_lock(&vha->vha_tgt.tgt_mutex); 1510 tgt->tgt_stop = 1; 1511 qlt_clear_tgt_db(tgt); 1512 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1513 mutex_unlock(&qla_tgt_mutex); 1514 1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1516 "Waiting for sess works (tgt %p)", tgt); 1517 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1518 while (!list_empty(&tgt->sess_works_list)) { 1519 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1520 flush_scheduled_work(); 1521 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1522 } 1523 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1524 1525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1526 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1527 1528 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1529 1530 /* Big hammer */ 1531 if (!ha->flags.host_shutting_down && 1532 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1533 qlt_disable_vha(vha); 1534 1535 /* Wait for sessions to clear out (just in case) */ 1536 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1537 mutex_unlock(&ha->optrom_mutex); 1538 1539 return 0; 1540 } 1541 EXPORT_SYMBOL(qlt_stop_phase1); 1542 1543 /* Called by tcm_qla2xxx configfs code */ 1544 void qlt_stop_phase2(struct qla_tgt *tgt) 1545 { 1546 scsi_qla_host_t *vha = tgt->vha; 1547 1548 if (tgt->tgt_stopped) { 1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1550 "Already in tgt->tgt_stopped state\n"); 1551 dump_stack(); 1552 return; 1553 } 1554 if (!tgt->tgt_stop) { 1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1556 "%s: phase1 stop is not completed\n", __func__); 1557 dump_stack(); 1558 return; 1559 } 1560 1561 mutex_lock(&vha->vha_tgt.tgt_mutex); 1562 tgt->tgt_stop = 0; 1563 tgt->tgt_stopped = 1; 1564 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1565 1566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1567 tgt); 1568 1569 switch (vha->qlini_mode) { 1570 case QLA2XXX_INI_MODE_EXCLUSIVE: 1571 vha->flags.online = 1; 1572 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1573 break; 1574 default: 1575 break; 1576 } 1577 } 1578 EXPORT_SYMBOL(qlt_stop_phase2); 1579 1580 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1581 static void qlt_release(struct qla_tgt *tgt) 1582 { 1583 scsi_qla_host_t *vha = tgt->vha; 1584 void *node; 1585 u64 key = 0; 1586 u16 i; 1587 struct qla_qpair_hint *h; 1588 struct qla_hw_data *ha = vha->hw; 1589 1590 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1591 qlt_stop_phase1(tgt); 1592 1593 if (!tgt->tgt_stopped) 1594 qlt_stop_phase2(tgt); 1595 1596 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1597 unsigned long flags; 1598 1599 h = &tgt->qphints[i]; 1600 if (h->qpair) { 1601 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1602 list_del(&h->hint_elem); 1603 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1604 h->qpair = NULL; 1605 } 1606 } 1607 kfree(tgt->qphints); 1608 mutex_lock(&qla_tgt_mutex); 1609 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1610 mutex_unlock(&qla_tgt_mutex); 1611 1612 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1613 btree_remove64(&tgt->lun_qpair_map, key); 1614 1615 btree_destroy64(&tgt->lun_qpair_map); 1616 1617 if (vha->vp_idx) 1618 if (ha->tgt.tgt_ops && 1619 ha->tgt.tgt_ops->remove_target && 1620 vha->vha_tgt.target_lport_ptr) 1621 ha->tgt.tgt_ops->remove_target(vha); 1622 1623 vha->vha_tgt.qla_tgt = NULL; 1624 1625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1626 "Release of tgt %p finished\n", tgt); 1627 1628 kfree(tgt); 1629 } 1630 1631 /* ha->hardware_lock supposed to be held on entry */ 1632 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1633 const void *param, unsigned int param_size) 1634 { 1635 struct qla_tgt_sess_work_param *prm; 1636 unsigned long flags; 1637 1638 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1639 if (!prm) { 1640 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1641 "qla_target(%d): Unable to create session " 1642 "work, command will be refused", 0); 1643 return -ENOMEM; 1644 } 1645 1646 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1647 "Scheduling work (type %d, prm %p)" 1648 " to find session for param %p (size %d, tgt %p)\n", 1649 type, prm, param, param_size, tgt); 1650 1651 prm->type = type; 1652 memcpy(&prm->tm_iocb, param, param_size); 1653 1654 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1655 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1656 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1657 1658 schedule_work(&tgt->sess_work); 1659 1660 return 0; 1661 } 1662 1663 /* 1664 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1665 */ 1666 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1667 struct imm_ntfy_from_isp *ntfy, 1668 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1669 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1670 { 1671 struct scsi_qla_host *vha = qpair->vha; 1672 struct qla_hw_data *ha = vha->hw; 1673 request_t *pkt; 1674 struct nack_to_isp *nack; 1675 1676 if (!ha->flags.fw_started) 1677 return; 1678 1679 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1680 1681 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1682 if (!pkt) { 1683 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1684 "qla_target(%d): %s failed: unable to allocate " 1685 "request packet\n", vha->vp_idx, __func__); 1686 return; 1687 } 1688 1689 if (vha->vha_tgt.qla_tgt != NULL) 1690 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1691 1692 pkt->entry_type = NOTIFY_ACK_TYPE; 1693 pkt->entry_count = 1; 1694 1695 nack = (struct nack_to_isp *)pkt; 1696 nack->ox_id = ntfy->ox_id; 1697 1698 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1699 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1700 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1701 nack->u.isp24.flags = ntfy->u.isp24.flags & 1702 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1703 } 1704 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1705 nack->u.isp24.status = ntfy->u.isp24.status; 1706 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1707 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1708 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1709 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1710 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1711 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1712 nack->u.isp24.srr_reject_code = srr_reject_code; 1713 nack->u.isp24.srr_reject_code_expl = srr_explan; 1714 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1715 1716 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1717 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1718 vha->vp_idx, nack->u.isp24.status); 1719 1720 /* Memory Barrier */ 1721 wmb(); 1722 qla2x00_start_iocbs(vha, qpair->req); 1723 } 1724 1725 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1726 { 1727 struct scsi_qla_host *vha = mcmd->vha; 1728 struct qla_hw_data *ha = vha->hw; 1729 struct abts_resp_to_24xx *resp; 1730 uint32_t f_ctl, h; 1731 uint8_t *p; 1732 int rc; 1733 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1734 struct qla_qpair *qpair = mcmd->qpair; 1735 1736 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1737 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1738 ha, mcmd->fc_tm_rsp); 1739 1740 rc = qlt_check_reserve_free_req(qpair, 1); 1741 if (rc) { 1742 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1743 "qla_target(%d): %s failed: unable to allocate request packet\n", 1744 vha->vp_idx, __func__); 1745 return -EAGAIN; 1746 } 1747 1748 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1749 memset(resp, 0, sizeof(*resp)); 1750 1751 h = qlt_make_handle(qpair); 1752 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1753 /* 1754 * CTIO type 7 from the firmware doesn't provide a way to 1755 * know the initiator's LOOP ID, hence we can't find 1756 * the session and, so, the command. 1757 */ 1758 return -EAGAIN; 1759 } else { 1760 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1761 } 1762 1763 resp->handle = MAKE_HANDLE(qpair->req->id, h); 1764 resp->entry_type = ABTS_RESP_24XX; 1765 resp->entry_count = 1; 1766 resp->nport_handle = abts->nport_handle; 1767 resp->vp_index = vha->vp_idx; 1768 resp->sof_type = abts->sof_type; 1769 resp->exchange_address = abts->exchange_address; 1770 resp->fcp_hdr_le = abts->fcp_hdr_le; 1771 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1772 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1773 F_CTL_SEQ_INITIATIVE); 1774 p = (uint8_t *)&f_ctl; 1775 resp->fcp_hdr_le.f_ctl[0] = *p++; 1776 resp->fcp_hdr_le.f_ctl[1] = *p++; 1777 resp->fcp_hdr_le.f_ctl[2] = *p; 1778 1779 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1780 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1781 1782 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1783 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1784 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1785 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1786 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1787 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1788 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1789 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1790 } else { 1791 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1792 resp->payload.ba_rjt.reason_code = 1793 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1794 /* Other bytes are zero */ 1795 } 1796 1797 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1798 1799 /* Memory Barrier */ 1800 wmb(); 1801 if (qpair->reqq_start_iocbs) 1802 qpair->reqq_start_iocbs(qpair); 1803 else 1804 qla2x00_start_iocbs(vha, qpair->req); 1805 1806 return rc; 1807 } 1808 1809 /* 1810 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1811 */ 1812 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1813 struct abts_recv_from_24xx *abts, uint32_t status, 1814 bool ids_reversed) 1815 { 1816 struct scsi_qla_host *vha = qpair->vha; 1817 struct qla_hw_data *ha = vha->hw; 1818 struct abts_resp_to_24xx *resp; 1819 uint32_t f_ctl; 1820 uint8_t *p; 1821 1822 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1823 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1824 ha, abts, status); 1825 1826 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1827 NULL); 1828 if (!resp) { 1829 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1830 "qla_target(%d): %s failed: unable to allocate " 1831 "request packet", vha->vp_idx, __func__); 1832 return; 1833 } 1834 1835 resp->entry_type = ABTS_RESP_24XX; 1836 resp->handle = QLA_TGT_SKIP_HANDLE; 1837 resp->entry_count = 1; 1838 resp->nport_handle = abts->nport_handle; 1839 resp->vp_index = vha->vp_idx; 1840 resp->sof_type = abts->sof_type; 1841 resp->exchange_address = abts->exchange_address; 1842 resp->fcp_hdr_le = abts->fcp_hdr_le; 1843 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1844 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1845 F_CTL_SEQ_INITIATIVE); 1846 p = (uint8_t *)&f_ctl; 1847 resp->fcp_hdr_le.f_ctl[0] = *p++; 1848 resp->fcp_hdr_le.f_ctl[1] = *p++; 1849 resp->fcp_hdr_le.f_ctl[2] = *p; 1850 if (ids_reversed) { 1851 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1852 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1853 } else { 1854 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1855 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1856 } 1857 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1858 if (status == FCP_TMF_CMPL) { 1859 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1860 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1861 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1862 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1863 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1864 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1865 } else { 1866 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1867 resp->payload.ba_rjt.reason_code = 1868 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1869 /* Other bytes are zero */ 1870 } 1871 1872 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1873 1874 /* Memory Barrier */ 1875 wmb(); 1876 if (qpair->reqq_start_iocbs) 1877 qpair->reqq_start_iocbs(qpair); 1878 else 1879 qla2x00_start_iocbs(vha, qpair->req); 1880 } 1881 1882 /* 1883 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1884 */ 1885 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1886 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1887 { 1888 struct ctio7_to_24xx *ctio; 1889 u16 tmp; 1890 struct abts_recv_from_24xx *entry; 1891 1892 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1893 if (ctio == NULL) { 1894 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1895 "qla_target(%d): %s failed: unable to allocate " 1896 "request packet\n", vha->vp_idx, __func__); 1897 return; 1898 } 1899 1900 if (mcmd) 1901 /* abts from remote port */ 1902 entry = &mcmd->orig_iocb.abts; 1903 else 1904 /* abts from this driver. */ 1905 entry = (struct abts_recv_from_24xx *)pkt; 1906 1907 /* 1908 * We've got on entrance firmware's response on by us generated 1909 * ABTS response. So, in it ID fields are reversed. 1910 */ 1911 1912 ctio->entry_type = CTIO_TYPE7; 1913 ctio->entry_count = 1; 1914 ctio->nport_handle = entry->nport_handle; 1915 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1916 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1917 ctio->vp_index = vha->vp_idx; 1918 ctio->exchange_addr = entry->exchange_addr_to_abort; 1919 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1920 1921 if (mcmd) { 1922 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1923 1924 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1925 tmp |= (mcmd->abort_io_attr << 9); 1926 else if (qpair->retry_term_cnt & 1) 1927 tmp |= (0x4 << 9); 1928 } else { 1929 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1930 1931 if (qpair->retry_term_cnt & 1) 1932 tmp |= (0x4 << 9); 1933 } 1934 ctio->u.status1.flags = cpu_to_le16(tmp); 1935 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1936 1937 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1938 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1939 le16_to_cpu(ctio->u.status1.flags), 1940 le16_to_cpu(ctio->u.status1.ox_id), 1941 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1942 1943 /* Memory Barrier */ 1944 wmb(); 1945 if (qpair->reqq_start_iocbs) 1946 qpair->reqq_start_iocbs(qpair); 1947 else 1948 qla2x00_start_iocbs(vha, qpair->req); 1949 1950 if (mcmd) 1951 qlt_build_abts_resp_iocb(mcmd); 1952 else 1953 qlt_24xx_send_abts_resp(qpair, 1954 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1955 1956 } 1957 1958 /* drop cmds for the given lun 1959 * XXX only looks for cmds on the port through which lun reset was recieved 1960 * XXX does not go through the list of other port (which may have cmds 1961 * for the same lun) 1962 */ 1963 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1964 { 1965 struct qla_tgt_sess_op *op; 1966 struct qla_tgt_cmd *cmd; 1967 uint32_t key; 1968 unsigned long flags; 1969 1970 key = sid_to_key(s_id); 1971 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1972 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1973 uint32_t op_key; 1974 u64 op_lun; 1975 1976 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1977 op_lun = scsilun_to_int( 1978 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1979 if (op_key == key && op_lun == lun) 1980 op->aborted = true; 1981 } 1982 1983 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1984 uint32_t op_key; 1985 u64 op_lun; 1986 1987 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1988 op_lun = scsilun_to_int( 1989 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1990 if (op_key == key && op_lun == lun) 1991 op->aborted = true; 1992 } 1993 1994 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1995 uint32_t cmd_key; 1996 u64 cmd_lun; 1997 1998 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1999 cmd_lun = scsilun_to_int( 2000 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2001 if (cmd_key == key && cmd_lun == lun) 2002 cmd->aborted = 1; 2003 } 2004 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2005 } 2006 2007 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2008 uint64_t unpacked_lun) 2009 { 2010 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2011 struct qla_qpair_hint *h = NULL; 2012 2013 if (vha->flags.qpairs_available) { 2014 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2015 if (!h) 2016 h = &tgt->qphints[0]; 2017 } else { 2018 h = &tgt->qphints[0]; 2019 } 2020 2021 return h; 2022 } 2023 2024 static void qlt_do_tmr_work(struct work_struct *work) 2025 { 2026 struct qla_tgt_mgmt_cmd *mcmd = 2027 container_of(work, struct qla_tgt_mgmt_cmd, work); 2028 struct qla_hw_data *ha = mcmd->vha->hw; 2029 int rc = EIO; 2030 uint32_t tag; 2031 unsigned long flags; 2032 2033 switch (mcmd->tmr_func) { 2034 case QLA_TGT_ABTS: 2035 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort; 2036 break; 2037 default: 2038 tag = 0; 2039 break; 2040 } 2041 2042 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2043 mcmd->tmr_func, tag); 2044 2045 if (rc != 0) { 2046 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2047 switch (mcmd->tmr_func) { 2048 case QLA_TGT_ABTS: 2049 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2050 qlt_build_abts_resp_iocb(mcmd); 2051 break; 2052 case QLA_TGT_LUN_RESET: 2053 case QLA_TGT_CLEAR_TS: 2054 case QLA_TGT_ABORT_TS: 2055 case QLA_TGT_CLEAR_ACA: 2056 case QLA_TGT_TARGET_RESET: 2057 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2058 qla_sam_status); 2059 break; 2060 2061 case QLA_TGT_ABORT_ALL: 2062 case QLA_TGT_NEXUS_LOSS_SESS: 2063 case QLA_TGT_NEXUS_LOSS: 2064 qlt_send_notify_ack(mcmd->qpair, 2065 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2066 break; 2067 } 2068 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2069 2070 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2071 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2072 mcmd->vha->vp_idx, rc); 2073 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2074 } 2075 } 2076 2077 /* ha->hardware_lock supposed to be held on entry */ 2078 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2079 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2080 { 2081 struct qla_hw_data *ha = vha->hw; 2082 struct qla_tgt_mgmt_cmd *mcmd; 2083 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2084 2085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2086 "qla_target(%d): task abort (tag=%d)\n", 2087 vha->vp_idx, abts->exchange_addr_to_abort); 2088 2089 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2090 if (mcmd == NULL) { 2091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2092 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2093 vha->vp_idx, __func__); 2094 return -ENOMEM; 2095 } 2096 memset(mcmd, 0, sizeof(*mcmd)); 2097 mcmd->cmd_type = TYPE_TGT_TMCMD; 2098 mcmd->sess = sess; 2099 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2100 mcmd->reset_count = ha->base_qpair->chip_reset; 2101 mcmd->tmr_func = QLA_TGT_ABTS; 2102 mcmd->qpair = h->qpair; 2103 mcmd->vha = vha; 2104 2105 /* 2106 * LUN is looked up by target-core internally based on the passed 2107 * abts->exchange_addr_to_abort tag. 2108 */ 2109 mcmd->se_cmd.cpuid = h->cpuid; 2110 2111 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2112 struct qla_tgt_cmd *abort_cmd; 2113 2114 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2115 abts->exchange_addr_to_abort); 2116 if (abort_cmd && abort_cmd->qpair) { 2117 mcmd->qpair = abort_cmd->qpair; 2118 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2119 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2120 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2121 } 2122 } 2123 2124 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2125 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2126 2127 return 0; 2128 } 2129 2130 /* 2131 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2132 */ 2133 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2134 struct abts_recv_from_24xx *abts) 2135 { 2136 struct qla_hw_data *ha = vha->hw; 2137 struct fc_port *sess; 2138 uint32_t tag = abts->exchange_addr_to_abort; 2139 be_id_t s_id; 2140 int rc; 2141 unsigned long flags; 2142 2143 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2145 "qla_target(%d): ABTS: Abort Sequence not " 2146 "supported\n", vha->vp_idx); 2147 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2148 false); 2149 return; 2150 } 2151 2152 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2154 "qla_target(%d): ABTS: Unknown Exchange " 2155 "Address received\n", vha->vp_idx); 2156 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2157 false); 2158 return; 2159 } 2160 2161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2162 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2163 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2164 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2165 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2166 2167 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2168 2169 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2170 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2171 if (!sess) { 2172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2173 "qla_target(%d): task abort for non-existent session\n", 2174 vha->vp_idx); 2175 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2176 2177 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2178 false); 2179 return; 2180 } 2181 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2182 2183 2184 if (sess->deleted) { 2185 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2186 false); 2187 return; 2188 } 2189 2190 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2191 if (rc != 0) { 2192 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2193 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2194 vha->vp_idx, rc); 2195 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2196 false); 2197 return; 2198 } 2199 } 2200 2201 /* 2202 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2203 */ 2204 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2205 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2206 { 2207 struct scsi_qla_host *ha = mcmd->vha; 2208 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2209 struct ctio7_to_24xx *ctio; 2210 uint16_t temp; 2211 2212 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2213 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2214 ha, atio, resp_code); 2215 2216 2217 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2218 if (ctio == NULL) { 2219 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2220 "qla_target(%d): %s failed: unable to allocate " 2221 "request packet\n", ha->vp_idx, __func__); 2222 return; 2223 } 2224 2225 ctio->entry_type = CTIO_TYPE7; 2226 ctio->entry_count = 1; 2227 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2228 ctio->nport_handle = mcmd->sess->loop_id; 2229 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2230 ctio->vp_index = ha->vp_idx; 2231 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2232 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2233 temp = (atio->u.isp24.attr << 9)| 2234 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2235 ctio->u.status1.flags = cpu_to_le16(temp); 2236 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2237 ctio->u.status1.ox_id = cpu_to_le16(temp); 2238 ctio->u.status1.scsi_status = 2239 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2240 ctio->u.status1.response_len = cpu_to_le16(8); 2241 ctio->u.status1.sense_data[0] = resp_code; 2242 2243 /* Memory Barrier */ 2244 wmb(); 2245 if (qpair->reqq_start_iocbs) 2246 qpair->reqq_start_iocbs(qpair); 2247 else 2248 qla2x00_start_iocbs(ha, qpair->req); 2249 } 2250 2251 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2252 { 2253 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2254 } 2255 EXPORT_SYMBOL(qlt_free_mcmd); 2256 2257 /* 2258 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2259 * reacquire 2260 */ 2261 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2262 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2263 { 2264 struct atio_from_isp *atio = &cmd->atio; 2265 struct ctio7_to_24xx *ctio; 2266 uint16_t temp; 2267 struct scsi_qla_host *vha = cmd->vha; 2268 2269 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2270 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2271 "sense_key=%02x, asc=%02x, ascq=%02x", 2272 vha, atio, scsi_status, sense_key, asc, ascq); 2273 2274 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2275 if (!ctio) { 2276 ql_dbg(ql_dbg_async, vha, 0x3067, 2277 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2278 vha->host_no, __func__); 2279 goto out; 2280 } 2281 2282 ctio->entry_type = CTIO_TYPE7; 2283 ctio->entry_count = 1; 2284 ctio->handle = QLA_TGT_SKIP_HANDLE; 2285 ctio->nport_handle = cmd->sess->loop_id; 2286 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2287 ctio->vp_index = vha->vp_idx; 2288 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2289 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2290 temp = (atio->u.isp24.attr << 9) | 2291 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2292 ctio->u.status1.flags = cpu_to_le16(temp); 2293 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2294 ctio->u.status1.ox_id = cpu_to_le16(temp); 2295 ctio->u.status1.scsi_status = 2296 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2297 ctio->u.status1.response_len = cpu_to_le16(18); 2298 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2299 2300 if (ctio->u.status1.residual != 0) 2301 ctio->u.status1.scsi_status |= 2302 cpu_to_le16(SS_RESIDUAL_UNDER); 2303 2304 /* Fixed format sense data. */ 2305 ctio->u.status1.sense_data[0] = 0x70; 2306 ctio->u.status1.sense_data[2] = sense_key; 2307 /* Additional sense length */ 2308 ctio->u.status1.sense_data[7] = 0xa; 2309 /* ASC and ASCQ */ 2310 ctio->u.status1.sense_data[12] = asc; 2311 ctio->u.status1.sense_data[13] = ascq; 2312 2313 /* Memory Barrier */ 2314 wmb(); 2315 2316 if (qpair->reqq_start_iocbs) 2317 qpair->reqq_start_iocbs(qpair); 2318 else 2319 qla2x00_start_iocbs(vha, qpair->req); 2320 2321 out: 2322 return; 2323 } 2324 2325 /* callback from target fabric module code */ 2326 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2327 { 2328 struct scsi_qla_host *vha = mcmd->sess->vha; 2329 struct qla_hw_data *ha = vha->hw; 2330 unsigned long flags; 2331 struct qla_qpair *qpair = mcmd->qpair; 2332 bool free_mcmd = true; 2333 2334 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2335 "TM response mcmd (%p) status %#x state %#x", 2336 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2337 2338 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2339 2340 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2341 /* 2342 * Either the port is not online or this request was from 2343 * previous life, just abort the processing. 2344 */ 2345 ql_dbg(ql_dbg_async, vha, 0xe100, 2346 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2347 vha->flags.online, qla2x00_reset_active(vha), 2348 mcmd->reset_count, qpair->chip_reset); 2349 ha->tgt.tgt_ops->free_mcmd(mcmd); 2350 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2351 return; 2352 } 2353 2354 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2355 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2356 case ELS_LOGO: 2357 case ELS_PRLO: 2358 case ELS_TPRLO: 2359 ql_dbg(ql_dbg_disc, vha, 0x2106, 2360 "TM response logo %8phC status %#x state %#x", 2361 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2362 mcmd->flags); 2363 qlt_schedule_sess_for_deletion(mcmd->sess); 2364 break; 2365 default: 2366 qlt_send_notify_ack(vha->hw->base_qpair, 2367 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2368 break; 2369 } 2370 } else { 2371 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2372 qlt_build_abts_resp_iocb(mcmd); 2373 free_mcmd = false; 2374 } else 2375 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2376 mcmd->fc_tm_rsp); 2377 } 2378 /* 2379 * Make the callback for ->free_mcmd() to queue_work() and invoke 2380 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2381 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2382 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2383 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2384 * qlt_xmit_tm_rsp() returns here.. 2385 */ 2386 if (free_mcmd) 2387 ha->tgt.tgt_ops->free_mcmd(mcmd); 2388 2389 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2390 } 2391 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2392 2393 /* No locks */ 2394 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2395 { 2396 struct qla_tgt_cmd *cmd = prm->cmd; 2397 2398 BUG_ON(cmd->sg_cnt == 0); 2399 2400 prm->sg = (struct scatterlist *)cmd->sg; 2401 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2402 cmd->sg_cnt, cmd->dma_data_direction); 2403 if (unlikely(prm->seg_cnt == 0)) 2404 goto out_err; 2405 2406 prm->cmd->sg_mapped = 1; 2407 2408 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2409 /* 2410 * If greater than four sg entries then we need to allocate 2411 * the continuation entries 2412 */ 2413 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2414 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2415 QLA_TGT_DATASEGS_PER_CMD_24XX, 2416 QLA_TGT_DATASEGS_PER_CONT_24XX); 2417 } else { 2418 /* DIF */ 2419 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2420 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2421 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2422 prm->tot_dsds = prm->seg_cnt; 2423 } else 2424 prm->tot_dsds = prm->seg_cnt; 2425 2426 if (cmd->prot_sg_cnt) { 2427 prm->prot_sg = cmd->prot_sg; 2428 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2429 cmd->prot_sg, cmd->prot_sg_cnt, 2430 cmd->dma_data_direction); 2431 if (unlikely(prm->prot_seg_cnt == 0)) 2432 goto out_err; 2433 2434 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2435 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2436 /* Dif Bundling not support here */ 2437 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2438 cmd->blk_sz); 2439 prm->tot_dsds += prm->prot_seg_cnt; 2440 } else 2441 prm->tot_dsds += prm->prot_seg_cnt; 2442 } 2443 } 2444 2445 return 0; 2446 2447 out_err: 2448 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2449 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2450 0, prm->cmd->sg_cnt); 2451 return -1; 2452 } 2453 2454 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2455 { 2456 struct qla_hw_data *ha; 2457 struct qla_qpair *qpair; 2458 2459 if (!cmd->sg_mapped) 2460 return; 2461 2462 qpair = cmd->qpair; 2463 2464 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2465 cmd->dma_data_direction); 2466 cmd->sg_mapped = 0; 2467 2468 if (cmd->prot_sg_cnt) 2469 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2470 cmd->dma_data_direction); 2471 2472 if (!cmd->ctx) 2473 return; 2474 ha = vha->hw; 2475 if (cmd->ctx_dsd_alloced) 2476 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2477 2478 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2479 } 2480 2481 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2482 uint32_t req_cnt) 2483 { 2484 uint32_t cnt; 2485 struct req_que *req = qpair->req; 2486 2487 if (req->cnt < (req_cnt + 2)) { 2488 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2489 RD_REG_DWORD_RELAXED(req->req_q_out)); 2490 2491 if (req->ring_index < cnt) 2492 req->cnt = cnt - req->ring_index; 2493 else 2494 req->cnt = req->length - (req->ring_index - cnt); 2495 2496 if (unlikely(req->cnt < (req_cnt + 2))) 2497 return -EAGAIN; 2498 } 2499 2500 req->cnt -= req_cnt; 2501 2502 return 0; 2503 } 2504 2505 /* 2506 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2507 */ 2508 static inline void *qlt_get_req_pkt(struct req_que *req) 2509 { 2510 /* Adjust ring index. */ 2511 req->ring_index++; 2512 if (req->ring_index == req->length) { 2513 req->ring_index = 0; 2514 req->ring_ptr = req->ring; 2515 } else { 2516 req->ring_ptr++; 2517 } 2518 return (cont_entry_t *)req->ring_ptr; 2519 } 2520 2521 /* ha->hardware_lock supposed to be held on entry */ 2522 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2523 { 2524 uint32_t h; 2525 int index; 2526 uint8_t found = 0; 2527 struct req_que *req = qpair->req; 2528 2529 h = req->current_outstanding_cmd; 2530 2531 for (index = 1; index < req->num_outstanding_cmds; index++) { 2532 h++; 2533 if (h == req->num_outstanding_cmds) 2534 h = 1; 2535 2536 if (h == QLA_TGT_SKIP_HANDLE) 2537 continue; 2538 2539 if (!req->outstanding_cmds[h]) { 2540 found = 1; 2541 break; 2542 } 2543 } 2544 2545 if (found) { 2546 req->current_outstanding_cmd = h; 2547 } else { 2548 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2549 "qla_target(%d): Ran out of empty cmd slots\n", 2550 qpair->vha->vp_idx); 2551 h = QLA_TGT_NULL_HANDLE; 2552 } 2553 2554 return h; 2555 } 2556 2557 /* ha->hardware_lock supposed to be held on entry */ 2558 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2559 struct qla_tgt_prm *prm) 2560 { 2561 uint32_t h; 2562 struct ctio7_to_24xx *pkt; 2563 struct atio_from_isp *atio = &prm->cmd->atio; 2564 uint16_t temp; 2565 2566 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2567 prm->pkt = pkt; 2568 memset(pkt, 0, sizeof(*pkt)); 2569 2570 pkt->entry_type = CTIO_TYPE7; 2571 pkt->entry_count = (uint8_t)prm->req_cnt; 2572 pkt->vp_index = prm->cmd->vp_idx; 2573 2574 h = qlt_make_handle(qpair); 2575 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2576 /* 2577 * CTIO type 7 from the firmware doesn't provide a way to 2578 * know the initiator's LOOP ID, hence we can't find 2579 * the session and, so, the command. 2580 */ 2581 return -EAGAIN; 2582 } else 2583 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2584 2585 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2586 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2587 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2588 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2589 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2590 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2591 temp = atio->u.isp24.attr << 9; 2592 pkt->u.status0.flags |= cpu_to_le16(temp); 2593 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2594 pkt->u.status0.ox_id = cpu_to_le16(temp); 2595 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2596 2597 return 0; 2598 } 2599 2600 /* 2601 * ha->hardware_lock supposed to be held on entry. We have already made sure 2602 * that there is sufficient amount of request entries to not drop it. 2603 */ 2604 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2605 { 2606 int cnt; 2607 struct dsd64 *cur_dsd; 2608 2609 /* Build continuation packets */ 2610 while (prm->seg_cnt > 0) { 2611 cont_a64_entry_t *cont_pkt64 = 2612 (cont_a64_entry_t *)qlt_get_req_pkt( 2613 prm->cmd->qpair->req); 2614 2615 /* 2616 * Make sure that from cont_pkt64 none of 2617 * 64-bit specific fields used for 32-bit 2618 * addressing. Cast to (cont_entry_t *) for 2619 * that. 2620 */ 2621 2622 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2623 2624 cont_pkt64->entry_count = 1; 2625 cont_pkt64->sys_define = 0; 2626 2627 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2628 cur_dsd = cont_pkt64->dsd; 2629 2630 /* Load continuation entry data segments */ 2631 for (cnt = 0; 2632 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2633 cnt++, prm->seg_cnt--) { 2634 append_dsd64(&cur_dsd, prm->sg); 2635 prm->sg = sg_next(prm->sg); 2636 } 2637 } 2638 } 2639 2640 /* 2641 * ha->hardware_lock supposed to be held on entry. We have already made sure 2642 * that there is sufficient amount of request entries to not drop it. 2643 */ 2644 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2645 { 2646 int cnt; 2647 struct dsd64 *cur_dsd; 2648 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2649 2650 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2651 2652 /* Setup packet address segment pointer */ 2653 cur_dsd = &pkt24->u.status0.dsd; 2654 2655 /* Set total data segment count */ 2656 if (prm->seg_cnt) 2657 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2658 2659 if (prm->seg_cnt == 0) { 2660 /* No data transfer */ 2661 cur_dsd->address = 0; 2662 cur_dsd->length = 0; 2663 return; 2664 } 2665 2666 /* If scatter gather */ 2667 2668 /* Load command entry data segments */ 2669 for (cnt = 0; 2670 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2671 cnt++, prm->seg_cnt--) { 2672 append_dsd64(&cur_dsd, prm->sg); 2673 prm->sg = sg_next(prm->sg); 2674 } 2675 2676 qlt_load_cont_data_segments(prm); 2677 } 2678 2679 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2680 { 2681 return cmd->bufflen > 0; 2682 } 2683 2684 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2685 { 2686 struct qla_tgt_cmd *cmd; 2687 struct scsi_qla_host *vha; 2688 2689 /* asc 0x10=dif error */ 2690 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2691 cmd = prm->cmd; 2692 vha = cmd->vha; 2693 /* ASCQ */ 2694 switch (prm->sense_buffer[13]) { 2695 case 1: 2696 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2697 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2698 "se_cmd=%p tag[%x]", 2699 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2700 cmd->atio.u.isp24.exchange_addr); 2701 break; 2702 case 2: 2703 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2704 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2705 "se_cmd=%p tag[%x]", 2706 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2707 cmd->atio.u.isp24.exchange_addr); 2708 break; 2709 case 3: 2710 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2711 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2712 "se_cmd=%p tag[%x]", 2713 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2714 cmd->atio.u.isp24.exchange_addr); 2715 break; 2716 default: 2717 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2718 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2719 "se_cmd=%p tag[%x]", 2720 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2721 cmd->atio.u.isp24.exchange_addr); 2722 break; 2723 } 2724 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2725 } 2726 } 2727 2728 /* 2729 * Called without ha->hardware_lock held 2730 */ 2731 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2732 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2733 uint32_t *full_req_cnt) 2734 { 2735 struct se_cmd *se_cmd = &cmd->se_cmd; 2736 struct qla_qpair *qpair = cmd->qpair; 2737 2738 prm->cmd = cmd; 2739 prm->tgt = cmd->tgt; 2740 prm->pkt = NULL; 2741 prm->rq_result = scsi_status; 2742 prm->sense_buffer = &cmd->sense_buffer[0]; 2743 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2744 prm->sg = NULL; 2745 prm->seg_cnt = -1; 2746 prm->req_cnt = 1; 2747 prm->residual = 0; 2748 prm->add_status_pkt = 0; 2749 prm->prot_sg = NULL; 2750 prm->prot_seg_cnt = 0; 2751 prm->tot_dsds = 0; 2752 2753 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2754 if (qlt_pci_map_calc_cnt(prm) != 0) 2755 return -EAGAIN; 2756 } 2757 2758 *full_req_cnt = prm->req_cnt; 2759 2760 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2761 prm->residual = se_cmd->residual_count; 2762 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2763 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2764 prm->residual, se_cmd->tag, 2765 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2766 cmd->bufflen, prm->rq_result); 2767 prm->rq_result |= SS_RESIDUAL_UNDER; 2768 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2769 prm->residual = se_cmd->residual_count; 2770 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2771 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2772 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2773 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2774 prm->rq_result |= SS_RESIDUAL_OVER; 2775 } 2776 2777 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2778 /* 2779 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2780 * ignored in *xmit_response() below 2781 */ 2782 if (qlt_has_data(cmd)) { 2783 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2784 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2785 (prm->rq_result != 0))) { 2786 prm->add_status_pkt = 1; 2787 (*full_req_cnt)++; 2788 } 2789 } 2790 } 2791 2792 return 0; 2793 } 2794 2795 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2796 int sending_sense) 2797 { 2798 if (cmd->qpair->enable_class_2) 2799 return 0; 2800 2801 if (sending_sense) 2802 return cmd->conf_compl_supported; 2803 else 2804 return cmd->qpair->enable_explicit_conf && 2805 cmd->conf_compl_supported; 2806 } 2807 2808 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2809 struct qla_tgt_prm *prm) 2810 { 2811 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2812 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2813 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2814 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2815 ctio->u.status0.flags |= cpu_to_le16( 2816 CTIO7_FLAGS_EXPLICIT_CONFORM | 2817 CTIO7_FLAGS_CONFORM_REQ); 2818 } 2819 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2820 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2821 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2822 int i; 2823 2824 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2825 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2826 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2827 "Skipping EXPLICIT_CONFORM and " 2828 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2829 "non GOOD status\n"); 2830 goto skip_explict_conf; 2831 } 2832 ctio->u.status1.flags |= cpu_to_le16( 2833 CTIO7_FLAGS_EXPLICIT_CONFORM | 2834 CTIO7_FLAGS_CONFORM_REQ); 2835 } 2836 skip_explict_conf: 2837 ctio->u.status1.flags &= 2838 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2839 ctio->u.status1.flags |= 2840 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2841 ctio->u.status1.scsi_status |= 2842 cpu_to_le16(SS_SENSE_LEN_VALID); 2843 ctio->u.status1.sense_length = 2844 cpu_to_le16(prm->sense_buffer_len); 2845 for (i = 0; i < prm->sense_buffer_len/4; i++) 2846 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2847 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2848 2849 qlt_print_dif_err(prm); 2850 2851 } else { 2852 ctio->u.status1.flags &= 2853 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2854 ctio->u.status1.flags |= 2855 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2856 ctio->u.status1.sense_length = 0; 2857 memset(ctio->u.status1.sense_data, 0, 2858 sizeof(ctio->u.status1.sense_data)); 2859 } 2860 2861 /* Sense with len > 24, is it possible ??? */ 2862 } 2863 2864 static inline int 2865 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2866 { 2867 switch (se_cmd->prot_op) { 2868 case TARGET_PROT_DOUT_INSERT: 2869 case TARGET_PROT_DIN_STRIP: 2870 if (ql2xenablehba_err_chk >= 1) 2871 return 1; 2872 break; 2873 case TARGET_PROT_DOUT_PASS: 2874 case TARGET_PROT_DIN_PASS: 2875 if (ql2xenablehba_err_chk >= 2) 2876 return 1; 2877 break; 2878 case TARGET_PROT_DIN_INSERT: 2879 case TARGET_PROT_DOUT_STRIP: 2880 return 1; 2881 default: 2882 break; 2883 } 2884 return 0; 2885 } 2886 2887 static inline int 2888 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2889 { 2890 switch (se_cmd->prot_op) { 2891 case TARGET_PROT_DIN_INSERT: 2892 case TARGET_PROT_DOUT_INSERT: 2893 case TARGET_PROT_DIN_STRIP: 2894 case TARGET_PROT_DOUT_STRIP: 2895 case TARGET_PROT_DIN_PASS: 2896 case TARGET_PROT_DOUT_PASS: 2897 return 1; 2898 default: 2899 return 0; 2900 } 2901 return 0; 2902 } 2903 2904 /* 2905 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2906 */ 2907 static void 2908 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2909 uint16_t *pfw_prot_opts) 2910 { 2911 struct se_cmd *se_cmd = &cmd->se_cmd; 2912 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2913 scsi_qla_host_t *vha = cmd->tgt->vha; 2914 struct qla_hw_data *ha = vha->hw; 2915 uint32_t t32 = 0; 2916 2917 /* 2918 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2919 * have been immplemented by TCM, before AppTag is avail. 2920 * Look for modesense_handlers[] 2921 */ 2922 ctx->app_tag = 0; 2923 ctx->app_tag_mask[0] = 0x0; 2924 ctx->app_tag_mask[1] = 0x0; 2925 2926 if (IS_PI_UNINIT_CAPABLE(ha)) { 2927 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2928 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2929 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2930 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2931 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2932 } 2933 2934 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2935 2936 switch (se_cmd->prot_type) { 2937 case TARGET_DIF_TYPE0_PROT: 2938 /* 2939 * No check for ql2xenablehba_err_chk, as it 2940 * would be an I/O error if hba tag generation 2941 * is not done. 2942 */ 2943 ctx->ref_tag = cpu_to_le32(lba); 2944 /* enable ALL bytes of the ref tag */ 2945 ctx->ref_tag_mask[0] = 0xff; 2946 ctx->ref_tag_mask[1] = 0xff; 2947 ctx->ref_tag_mask[2] = 0xff; 2948 ctx->ref_tag_mask[3] = 0xff; 2949 break; 2950 case TARGET_DIF_TYPE1_PROT: 2951 /* 2952 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2953 * REF tag, and 16 bit app tag. 2954 */ 2955 ctx->ref_tag = cpu_to_le32(lba); 2956 if (!qla_tgt_ref_mask_check(se_cmd) || 2957 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2958 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2959 break; 2960 } 2961 /* enable ALL bytes of the ref tag */ 2962 ctx->ref_tag_mask[0] = 0xff; 2963 ctx->ref_tag_mask[1] = 0xff; 2964 ctx->ref_tag_mask[2] = 0xff; 2965 ctx->ref_tag_mask[3] = 0xff; 2966 break; 2967 case TARGET_DIF_TYPE2_PROT: 2968 /* 2969 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2970 * tag has to match LBA in CDB + N 2971 */ 2972 ctx->ref_tag = cpu_to_le32(lba); 2973 if (!qla_tgt_ref_mask_check(se_cmd) || 2974 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2975 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2976 break; 2977 } 2978 /* enable ALL bytes of the ref tag */ 2979 ctx->ref_tag_mask[0] = 0xff; 2980 ctx->ref_tag_mask[1] = 0xff; 2981 ctx->ref_tag_mask[2] = 0xff; 2982 ctx->ref_tag_mask[3] = 0xff; 2983 break; 2984 case TARGET_DIF_TYPE3_PROT: 2985 /* For TYPE 3 protection: 16 bit GUARD only */ 2986 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2987 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2988 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2989 break; 2990 } 2991 } 2992 2993 static inline int 2994 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2995 { 2996 struct dsd64 *cur_dsd; 2997 uint32_t transfer_length = 0; 2998 uint32_t data_bytes; 2999 uint32_t dif_bytes; 3000 uint8_t bundling = 1; 3001 struct crc_context *crc_ctx_pkt = NULL; 3002 struct qla_hw_data *ha; 3003 struct ctio_crc2_to_fw *pkt; 3004 dma_addr_t crc_ctx_dma; 3005 uint16_t fw_prot_opts = 0; 3006 struct qla_tgt_cmd *cmd = prm->cmd; 3007 struct se_cmd *se_cmd = &cmd->se_cmd; 3008 uint32_t h; 3009 struct atio_from_isp *atio = &prm->cmd->atio; 3010 struct qla_tc_param tc; 3011 uint16_t t16; 3012 scsi_qla_host_t *vha = cmd->vha; 3013 3014 ha = vha->hw; 3015 3016 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3017 prm->pkt = pkt; 3018 memset(pkt, 0, sizeof(*pkt)); 3019 3020 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3021 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3022 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3023 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3024 3025 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3026 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3027 bundling = 0; 3028 3029 /* Compute dif len and adjust data len to incude protection */ 3030 data_bytes = cmd->bufflen; 3031 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3032 3033 switch (se_cmd->prot_op) { 3034 case TARGET_PROT_DIN_INSERT: 3035 case TARGET_PROT_DOUT_STRIP: 3036 transfer_length = data_bytes; 3037 if (cmd->prot_sg_cnt) 3038 data_bytes += dif_bytes; 3039 break; 3040 case TARGET_PROT_DIN_STRIP: 3041 case TARGET_PROT_DOUT_INSERT: 3042 case TARGET_PROT_DIN_PASS: 3043 case TARGET_PROT_DOUT_PASS: 3044 transfer_length = data_bytes + dif_bytes; 3045 break; 3046 default: 3047 BUG(); 3048 break; 3049 } 3050 3051 if (!qlt_hba_err_chk_enabled(se_cmd)) 3052 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3053 /* HBA error checking enabled */ 3054 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3055 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3056 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3057 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3058 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3059 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3060 } 3061 3062 switch (se_cmd->prot_op) { 3063 case TARGET_PROT_DIN_INSERT: 3064 case TARGET_PROT_DOUT_INSERT: 3065 fw_prot_opts |= PO_MODE_DIF_INSERT; 3066 break; 3067 case TARGET_PROT_DIN_STRIP: 3068 case TARGET_PROT_DOUT_STRIP: 3069 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3070 break; 3071 case TARGET_PROT_DIN_PASS: 3072 case TARGET_PROT_DOUT_PASS: 3073 fw_prot_opts |= PO_MODE_DIF_PASS; 3074 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3075 break; 3076 default:/* Normal Request */ 3077 fw_prot_opts |= PO_MODE_DIF_PASS; 3078 break; 3079 } 3080 3081 /* ---- PKT ---- */ 3082 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3083 pkt->entry_type = CTIO_CRC2; 3084 pkt->entry_count = 1; 3085 pkt->vp_index = cmd->vp_idx; 3086 3087 h = qlt_make_handle(qpair); 3088 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3089 /* 3090 * CTIO type 7 from the firmware doesn't provide a way to 3091 * know the initiator's LOOP ID, hence we can't find 3092 * the session and, so, the command. 3093 */ 3094 return -EAGAIN; 3095 } else 3096 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3097 3098 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 3099 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3100 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3101 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3102 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3103 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3104 3105 /* silence compile warning */ 3106 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3107 pkt->ox_id = cpu_to_le16(t16); 3108 3109 t16 = (atio->u.isp24.attr << 9); 3110 pkt->flags |= cpu_to_le16(t16); 3111 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3112 3113 /* Set transfer direction */ 3114 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3115 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3116 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3117 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3118 3119 pkt->dseg_count = prm->tot_dsds; 3120 /* Fibre channel byte count */ 3121 pkt->transfer_length = cpu_to_le32(transfer_length); 3122 3123 /* ----- CRC context -------- */ 3124 3125 /* Allocate CRC context from global pool */ 3126 crc_ctx_pkt = cmd->ctx = 3127 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3128 3129 if (!crc_ctx_pkt) 3130 goto crc_queuing_error; 3131 3132 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3133 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3134 3135 /* Set handle */ 3136 crc_ctx_pkt->handle = pkt->handle; 3137 3138 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3139 3140 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3141 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3142 3143 if (!bundling) { 3144 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3145 } else { 3146 /* 3147 * Configure Bundling if we need to fetch interlaving 3148 * protection PCI accesses 3149 */ 3150 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3151 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3152 crc_ctx_pkt->u.bundling.dseg_count = 3153 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3154 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3155 } 3156 3157 /* Finish the common fields of CRC pkt */ 3158 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3159 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3160 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3161 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3162 3163 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3164 tc.vha = vha; 3165 tc.blk_sz = cmd->blk_sz; 3166 tc.bufflen = cmd->bufflen; 3167 tc.sg = cmd->sg; 3168 tc.prot_sg = cmd->prot_sg; 3169 tc.ctx = crc_ctx_pkt; 3170 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3171 3172 /* Walks data segments */ 3173 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3174 3175 if (!bundling && prm->prot_seg_cnt) { 3176 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3177 prm->tot_dsds, &tc)) 3178 goto crc_queuing_error; 3179 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3180 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3181 goto crc_queuing_error; 3182 3183 if (bundling && prm->prot_seg_cnt) { 3184 /* Walks dif segments */ 3185 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3186 3187 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3188 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3189 prm->prot_seg_cnt, cmd)) 3190 goto crc_queuing_error; 3191 } 3192 return QLA_SUCCESS; 3193 3194 crc_queuing_error: 3195 /* Cleanup will be performed by the caller */ 3196 qpair->req->outstanding_cmds[h] = NULL; 3197 3198 return QLA_FUNCTION_FAILED; 3199 } 3200 3201 /* 3202 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3203 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3204 */ 3205 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3206 uint8_t scsi_status) 3207 { 3208 struct scsi_qla_host *vha = cmd->vha; 3209 struct qla_qpair *qpair = cmd->qpair; 3210 struct ctio7_to_24xx *pkt; 3211 struct qla_tgt_prm prm; 3212 uint32_t full_req_cnt = 0; 3213 unsigned long flags = 0; 3214 int res; 3215 3216 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3217 (cmd->sess && cmd->sess->deleted)) { 3218 cmd->state = QLA_TGT_STATE_PROCESSED; 3219 res = 0; 3220 goto free; 3221 } 3222 3223 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3224 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3225 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3226 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3227 &cmd->se_cmd, qpair->id); 3228 3229 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3230 &full_req_cnt); 3231 if (unlikely(res != 0)) 3232 goto free; 3233 3234 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3235 3236 if (xmit_type == QLA_TGT_XMIT_STATUS) 3237 qpair->tgt_counters.core_qla_snd_status++; 3238 else 3239 qpair->tgt_counters.core_qla_que_buf++; 3240 3241 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3242 /* 3243 * Either the port is not online or this request was from 3244 * previous life, just abort the processing. 3245 */ 3246 cmd->state = QLA_TGT_STATE_PROCESSED; 3247 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3248 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3249 vha->flags.online, qla2x00_reset_active(vha), 3250 cmd->reset_count, qpair->chip_reset); 3251 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3252 res = 0; 3253 goto free; 3254 } 3255 3256 /* Does F/W have an IOCBs for this request */ 3257 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3258 if (unlikely(res)) 3259 goto out_unmap_unlock; 3260 3261 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3262 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3263 else 3264 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3265 if (unlikely(res != 0)) { 3266 qpair->req->cnt += full_req_cnt; 3267 goto out_unmap_unlock; 3268 } 3269 3270 pkt = (struct ctio7_to_24xx *)prm.pkt; 3271 3272 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3273 pkt->u.status0.flags |= 3274 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3275 CTIO7_FLAGS_STATUS_MODE_0); 3276 3277 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3278 qlt_load_data_segments(&prm); 3279 3280 if (prm.add_status_pkt == 0) { 3281 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3282 pkt->u.status0.scsi_status = 3283 cpu_to_le16(prm.rq_result); 3284 pkt->u.status0.residual = 3285 cpu_to_le32(prm.residual); 3286 pkt->u.status0.flags |= cpu_to_le16( 3287 CTIO7_FLAGS_SEND_STATUS); 3288 if (qlt_need_explicit_conf(cmd, 0)) { 3289 pkt->u.status0.flags |= 3290 cpu_to_le16( 3291 CTIO7_FLAGS_EXPLICIT_CONFORM | 3292 CTIO7_FLAGS_CONFORM_REQ); 3293 } 3294 } 3295 3296 } else { 3297 /* 3298 * We have already made sure that there is sufficient 3299 * amount of request entries to not drop HW lock in 3300 * req_pkt(). 3301 */ 3302 struct ctio7_to_24xx *ctio = 3303 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3304 qpair->req); 3305 3306 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3307 "Building additional status packet 0x%p.\n", 3308 ctio); 3309 3310 /* 3311 * T10Dif: ctio_crc2_to_fw overlay ontop of 3312 * ctio7_to_24xx 3313 */ 3314 memcpy(ctio, pkt, sizeof(*ctio)); 3315 /* reset back to CTIO7 */ 3316 ctio->entry_count = 1; 3317 ctio->entry_type = CTIO_TYPE7; 3318 ctio->dseg_count = 0; 3319 ctio->u.status1.flags &= ~cpu_to_le16( 3320 CTIO7_FLAGS_DATA_IN); 3321 3322 /* Real finish is ctio_m1's finish */ 3323 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3324 pkt->u.status0.flags |= cpu_to_le16( 3325 CTIO7_FLAGS_DONT_RET_CTIO); 3326 3327 /* qlt_24xx_init_ctio_to_isp will correct 3328 * all neccessary fields that's part of CTIO7. 3329 * There should be no residual of CTIO-CRC2 data. 3330 */ 3331 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3332 &prm); 3333 } 3334 } else 3335 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3336 3337 3338 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3339 cmd->cmd_sent_to_fw = 1; 3340 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3341 3342 /* Memory Barrier */ 3343 wmb(); 3344 if (qpair->reqq_start_iocbs) 3345 qpair->reqq_start_iocbs(qpair); 3346 else 3347 qla2x00_start_iocbs(vha, qpair->req); 3348 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3349 3350 return 0; 3351 3352 out_unmap_unlock: 3353 qlt_unmap_sg(vha, cmd); 3354 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3355 3356 free: 3357 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3358 return res; 3359 } 3360 EXPORT_SYMBOL(qlt_xmit_response); 3361 3362 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3363 { 3364 struct ctio7_to_24xx *pkt; 3365 struct scsi_qla_host *vha = cmd->vha; 3366 struct qla_tgt *tgt = cmd->tgt; 3367 struct qla_tgt_prm prm; 3368 unsigned long flags = 0; 3369 int res = 0; 3370 struct qla_qpair *qpair = cmd->qpair; 3371 3372 memset(&prm, 0, sizeof(prm)); 3373 prm.cmd = cmd; 3374 prm.tgt = tgt; 3375 prm.sg = NULL; 3376 prm.req_cnt = 1; 3377 3378 /* Calculate number of entries and segments required */ 3379 if (qlt_pci_map_calc_cnt(&prm) != 0) 3380 return -EAGAIN; 3381 3382 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3383 (cmd->sess && cmd->sess->deleted)) { 3384 /* 3385 * Either the port is not online or this request was from 3386 * previous life, just abort the processing. 3387 */ 3388 cmd->aborted = 1; 3389 cmd->write_data_transferred = 0; 3390 cmd->state = QLA_TGT_STATE_DATA_IN; 3391 vha->hw->tgt.tgt_ops->handle_data(cmd); 3392 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3393 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3394 vha->flags.online, qla2x00_reset_active(vha), 3395 cmd->reset_count, qpair->chip_reset); 3396 return 0; 3397 } 3398 3399 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3400 /* Does F/W have an IOCBs for this request */ 3401 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3402 if (res != 0) 3403 goto out_unlock_free_unmap; 3404 if (cmd->se_cmd.prot_op) 3405 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3406 else 3407 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3408 3409 if (unlikely(res != 0)) { 3410 qpair->req->cnt += prm.req_cnt; 3411 goto out_unlock_free_unmap; 3412 } 3413 3414 pkt = (struct ctio7_to_24xx *)prm.pkt; 3415 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3416 CTIO7_FLAGS_STATUS_MODE_0); 3417 3418 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3419 qlt_load_data_segments(&prm); 3420 3421 cmd->state = QLA_TGT_STATE_NEED_DATA; 3422 cmd->cmd_sent_to_fw = 1; 3423 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3424 3425 /* Memory Barrier */ 3426 wmb(); 3427 if (qpair->reqq_start_iocbs) 3428 qpair->reqq_start_iocbs(qpair); 3429 else 3430 qla2x00_start_iocbs(vha, qpair->req); 3431 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3432 3433 return res; 3434 3435 out_unlock_free_unmap: 3436 qlt_unmap_sg(vha, cmd); 3437 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3438 3439 return res; 3440 } 3441 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3442 3443 3444 /* 3445 * it is assumed either hardware_lock or qpair lock is held. 3446 */ 3447 static void 3448 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3449 struct ctio_crc_from_fw *sts) 3450 { 3451 uint8_t *ap = &sts->actual_dif[0]; 3452 uint8_t *ep = &sts->expected_dif[0]; 3453 uint64_t lba = cmd->se_cmd.t_task_lba; 3454 uint8_t scsi_status, sense_key, asc, ascq; 3455 unsigned long flags; 3456 struct scsi_qla_host *vha = cmd->vha; 3457 3458 cmd->trc_flags |= TRC_DIF_ERR; 3459 3460 cmd->a_guard = get_unaligned_be16(ap + 0); 3461 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3462 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3463 3464 cmd->e_guard = get_unaligned_be16(ep + 0); 3465 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3466 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3467 3468 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3469 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3470 3471 scsi_status = sense_key = asc = ascq = 0; 3472 3473 /* check appl tag */ 3474 if (cmd->e_app_tag != cmd->a_app_tag) { 3475 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3476 "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]", 3477 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3478 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3479 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3480 cmd->atio.u.isp24.fcp_hdr.ox_id); 3481 3482 cmd->dif_err_code = DIF_ERR_APP; 3483 scsi_status = SAM_STAT_CHECK_CONDITION; 3484 sense_key = ABORTED_COMMAND; 3485 asc = 0x10; 3486 ascq = 0x2; 3487 } 3488 3489 /* check ref tag */ 3490 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3491 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3492 "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] ", 3493 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3494 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3495 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3496 cmd->atio.u.isp24.fcp_hdr.ox_id); 3497 3498 cmd->dif_err_code = DIF_ERR_REF; 3499 scsi_status = SAM_STAT_CHECK_CONDITION; 3500 sense_key = ABORTED_COMMAND; 3501 asc = 0x10; 3502 ascq = 0x3; 3503 goto out; 3504 } 3505 3506 /* check guard */ 3507 if (cmd->e_guard != cmd->a_guard) { 3508 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3509 "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]", 3510 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3511 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3512 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3513 cmd->atio.u.isp24.fcp_hdr.ox_id); 3514 3515 cmd->dif_err_code = DIF_ERR_GRD; 3516 scsi_status = SAM_STAT_CHECK_CONDITION; 3517 sense_key = ABORTED_COMMAND; 3518 asc = 0x10; 3519 ascq = 0x1; 3520 } 3521 out: 3522 switch (cmd->state) { 3523 case QLA_TGT_STATE_NEED_DATA: 3524 /* handle_data will load DIF error code */ 3525 cmd->state = QLA_TGT_STATE_DATA_IN; 3526 vha->hw->tgt.tgt_ops->handle_data(cmd); 3527 break; 3528 default: 3529 spin_lock_irqsave(&cmd->cmd_lock, flags); 3530 if (cmd->aborted) { 3531 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3532 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3533 break; 3534 } 3535 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3536 3537 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3538 ascq); 3539 /* assume scsi status gets out on the wire. 3540 * Will not wait for completion. 3541 */ 3542 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3543 break; 3544 } 3545 } 3546 3547 /* If hardware_lock held on entry, might drop it, then reaquire */ 3548 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3549 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3550 struct imm_ntfy_from_isp *ntfy) 3551 { 3552 struct nack_to_isp *nack; 3553 struct qla_hw_data *ha = vha->hw; 3554 request_t *pkt; 3555 int ret = 0; 3556 3557 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3558 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3559 3560 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3561 if (pkt == NULL) { 3562 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3563 "qla_target(%d): %s failed: unable to allocate " 3564 "request packet\n", vha->vp_idx, __func__); 3565 return -ENOMEM; 3566 } 3567 3568 pkt->entry_type = NOTIFY_ACK_TYPE; 3569 pkt->entry_count = 1; 3570 pkt->handle = QLA_TGT_SKIP_HANDLE; 3571 3572 nack = (struct nack_to_isp *)pkt; 3573 nack->ox_id = ntfy->ox_id; 3574 3575 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3576 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3577 nack->u.isp24.flags = ntfy->u.isp24.flags & 3578 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3579 } 3580 3581 /* terminate */ 3582 nack->u.isp24.flags |= 3583 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3584 3585 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3586 nack->u.isp24.status = ntfy->u.isp24.status; 3587 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3588 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3589 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3590 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3591 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3592 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3593 3594 qla2x00_start_iocbs(vha, vha->req); 3595 return ret; 3596 } 3597 3598 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3599 struct imm_ntfy_from_isp *imm, int ha_locked) 3600 { 3601 int rc; 3602 3603 WARN_ON_ONCE(!ha_locked); 3604 rc = __qlt_send_term_imm_notif(vha, imm); 3605 pr_debug("rc = %d\n", rc); 3606 } 3607 3608 /* 3609 * If hardware_lock held on entry, might drop it, then reaquire 3610 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3611 */ 3612 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3613 struct qla_tgt_cmd *cmd, 3614 struct atio_from_isp *atio) 3615 { 3616 struct scsi_qla_host *vha = qpair->vha; 3617 struct ctio7_to_24xx *ctio24; 3618 struct qla_hw_data *ha = vha->hw; 3619 request_t *pkt; 3620 int ret = 0; 3621 uint16_t temp; 3622 3623 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3624 3625 if (cmd) 3626 vha = cmd->vha; 3627 3628 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3629 if (pkt == NULL) { 3630 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3631 "qla_target(%d): %s failed: unable to allocate " 3632 "request packet\n", vha->vp_idx, __func__); 3633 return -ENOMEM; 3634 } 3635 3636 if (cmd != NULL) { 3637 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3638 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3639 "qla_target(%d): Terminating cmd %p with " 3640 "incorrect state %d\n", vha->vp_idx, cmd, 3641 cmd->state); 3642 } else 3643 ret = 1; 3644 } 3645 3646 qpair->tgt_counters.num_term_xchg_sent++; 3647 pkt->entry_count = 1; 3648 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3649 3650 ctio24 = (struct ctio7_to_24xx *)pkt; 3651 ctio24->entry_type = CTIO_TYPE7; 3652 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3653 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3654 ctio24->vp_index = vha->vp_idx; 3655 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3656 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3657 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3658 CTIO7_FLAGS_TERMINATE; 3659 ctio24->u.status1.flags = cpu_to_le16(temp); 3660 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3661 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3662 3663 /* Memory Barrier */ 3664 wmb(); 3665 if (qpair->reqq_start_iocbs) 3666 qpair->reqq_start_iocbs(qpair); 3667 else 3668 qla2x00_start_iocbs(vha, qpair->req); 3669 return ret; 3670 } 3671 3672 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3673 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3674 int ul_abort) 3675 { 3676 struct scsi_qla_host *vha; 3677 unsigned long flags = 0; 3678 int rc; 3679 3680 /* why use different vha? NPIV */ 3681 if (cmd) 3682 vha = cmd->vha; 3683 else 3684 vha = qpair->vha; 3685 3686 if (ha_locked) { 3687 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3688 if (rc == -ENOMEM) 3689 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3690 goto done; 3691 } 3692 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3693 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3694 if (rc == -ENOMEM) 3695 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3696 3697 done: 3698 if (cmd && !ul_abort && !cmd->aborted) { 3699 if (cmd->sg_mapped) 3700 qlt_unmap_sg(vha, cmd); 3701 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3702 } 3703 3704 if (!ha_locked) 3705 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3706 3707 return; 3708 } 3709 3710 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3711 { 3712 struct list_head free_list; 3713 struct qla_tgt_cmd *cmd, *tcmd; 3714 3715 vha->hw->tgt.leak_exchg_thresh_hold = 3716 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3717 3718 cmd = tcmd = NULL; 3719 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3720 INIT_LIST_HEAD(&free_list); 3721 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3722 3723 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3724 list_del(&cmd->cmd_list); 3725 /* This cmd was never sent to TCM. There is no need 3726 * to schedule free or call free_cmd 3727 */ 3728 qlt_free_cmd(cmd); 3729 vha->hw->tgt.num_qfull_cmds_alloc--; 3730 } 3731 } 3732 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3733 } 3734 3735 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3736 { 3737 uint32_t total_leaked; 3738 3739 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3740 3741 if (vha->hw->tgt.leak_exchg_thresh_hold && 3742 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3743 3744 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3745 "Chip reset due to exchange starvation: %d/%d.\n", 3746 total_leaked, vha->hw->cur_fw_xcb_count); 3747 3748 if (IS_P3P_TYPE(vha->hw)) 3749 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3750 else 3751 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3752 qla2xxx_wake_dpc(vha); 3753 } 3754 3755 } 3756 3757 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3758 { 3759 struct qla_tgt *tgt = cmd->tgt; 3760 struct scsi_qla_host *vha = tgt->vha; 3761 struct se_cmd *se_cmd = &cmd->se_cmd; 3762 unsigned long flags; 3763 3764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3765 "qla_target(%d): terminating exchange for aborted cmd=%p " 3766 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3767 se_cmd->tag); 3768 3769 spin_lock_irqsave(&cmd->cmd_lock, flags); 3770 if (cmd->aborted) { 3771 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3772 /* 3773 * It's normal to see 2 calls in this path: 3774 * 1) XFER Rdy completion + CMD_T_ABORT 3775 * 2) TCM TMR - drain_state_list 3776 */ 3777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3778 "multiple abort. %p transport_state %x, t_state %x, " 3779 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3780 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3781 return EIO; 3782 } 3783 cmd->aborted = 1; 3784 cmd->trc_flags |= TRC_ABORT; 3785 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3786 3787 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3788 return 0; 3789 } 3790 EXPORT_SYMBOL(qlt_abort_cmd); 3791 3792 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3793 { 3794 struct fc_port *sess = cmd->sess; 3795 3796 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3797 "%s: se_cmd[%p] ox_id %04x\n", 3798 __func__, &cmd->se_cmd, 3799 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3800 3801 BUG_ON(cmd->cmd_in_wq); 3802 3803 if (cmd->sg_mapped) 3804 qlt_unmap_sg(cmd->vha, cmd); 3805 3806 if (!cmd->q_full) 3807 qlt_decr_num_pend_cmds(cmd->vha); 3808 3809 BUG_ON(cmd->sg_mapped); 3810 cmd->jiffies_at_free = get_jiffies_64(); 3811 if (unlikely(cmd->free_sg)) 3812 kfree(cmd->sg); 3813 3814 if (!sess || !sess->se_sess) { 3815 WARN_ON(1); 3816 return; 3817 } 3818 cmd->jiffies_at_free = get_jiffies_64(); 3819 target_free_tag(sess->se_sess, &cmd->se_cmd); 3820 } 3821 EXPORT_SYMBOL(qlt_free_cmd); 3822 3823 /* 3824 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3825 */ 3826 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3827 struct qla_tgt_cmd *cmd, uint32_t status) 3828 { 3829 int term = 0; 3830 struct scsi_qla_host *vha = qpair->vha; 3831 3832 if (cmd->se_cmd.prot_op) 3833 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3834 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3835 "se_cmd=%p tag[%x] op %#x/%s", 3836 cmd->lba, cmd->lba, 3837 cmd->num_blks, &cmd->se_cmd, 3838 cmd->atio.u.isp24.exchange_addr, 3839 cmd->se_cmd.prot_op, 3840 prot_op_str(cmd->se_cmd.prot_op)); 3841 3842 if (ctio != NULL) { 3843 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3844 3845 term = !(c->flags & 3846 cpu_to_le16(OF_TERM_EXCH)); 3847 } else 3848 term = 1; 3849 3850 if (term) 3851 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3852 3853 return term; 3854 } 3855 3856 3857 /* ha->hardware_lock supposed to be held on entry */ 3858 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3859 struct rsp_que *rsp, uint32_t handle, void *ctio) 3860 { 3861 void *cmd = NULL; 3862 struct req_que *req; 3863 int qid = GET_QID(handle); 3864 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3865 3866 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3867 return NULL; 3868 3869 if (qid == rsp->req->id) { 3870 req = rsp->req; 3871 } else if (vha->hw->req_q_map[qid]) { 3872 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3873 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3874 vha->vp_idx, rsp->id, handle); 3875 req = vha->hw->req_q_map[qid]; 3876 } else { 3877 return NULL; 3878 } 3879 3880 h &= QLA_CMD_HANDLE_MASK; 3881 3882 if (h != QLA_TGT_NULL_HANDLE) { 3883 if (unlikely(h >= req->num_outstanding_cmds)) { 3884 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3885 "qla_target(%d): Wrong handle %x received\n", 3886 vha->vp_idx, handle); 3887 return NULL; 3888 } 3889 3890 cmd = (void *) req->outstanding_cmds[h]; 3891 if (unlikely(cmd == NULL)) { 3892 ql_dbg(ql_dbg_async, vha, 0xe053, 3893 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3894 vha->vp_idx, handle, req->id, rsp->id); 3895 return NULL; 3896 } 3897 req->outstanding_cmds[h] = NULL; 3898 } else if (ctio != NULL) { 3899 /* We can't get loop ID from CTIO7 */ 3900 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3901 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3902 "support NULL handles\n", vha->vp_idx); 3903 return NULL; 3904 } 3905 3906 return cmd; 3907 } 3908 3909 /* 3910 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3911 */ 3912 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3913 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3914 { 3915 struct qla_hw_data *ha = vha->hw; 3916 struct se_cmd *se_cmd; 3917 struct qla_tgt_cmd *cmd; 3918 struct qla_qpair *qpair = rsp->qpair; 3919 3920 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3921 /* That could happen only in case of an error/reset/abort */ 3922 if (status != CTIO_SUCCESS) { 3923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3924 "Intermediate CTIO received" 3925 " (status %x)\n", status); 3926 } 3927 return; 3928 } 3929 3930 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3931 if (cmd == NULL) 3932 return; 3933 3934 se_cmd = &cmd->se_cmd; 3935 cmd->cmd_sent_to_fw = 0; 3936 3937 qlt_unmap_sg(vha, cmd); 3938 3939 if (unlikely(status != CTIO_SUCCESS)) { 3940 switch (status & 0xFFFF) { 3941 case CTIO_INVALID_RX_ID: 3942 if (printk_ratelimit()) 3943 dev_info(&vha->hw->pdev->dev, 3944 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3945 vha->vp_idx, cmd->atio.u.isp24.attr, 3946 ((cmd->ctio_flags >> 9) & 0xf), 3947 cmd->ctio_flags); 3948 3949 break; 3950 case CTIO_LIP_RESET: 3951 case CTIO_TARGET_RESET: 3952 case CTIO_ABORTED: 3953 /* driver request abort via Terminate exchange */ 3954 case CTIO_TIMEOUT: 3955 /* They are OK */ 3956 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3957 "qla_target(%d): CTIO with " 3958 "status %#x received, state %x, se_cmd %p, " 3959 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3960 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3961 status, cmd->state, se_cmd); 3962 break; 3963 3964 case CTIO_PORT_LOGGED_OUT: 3965 case CTIO_PORT_UNAVAILABLE: 3966 { 3967 int logged_out = 3968 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3969 3970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3971 "qla_target(%d): CTIO with %s status %x " 3972 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3973 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3974 status, cmd->state, se_cmd); 3975 3976 if (logged_out && cmd->sess) { 3977 /* 3978 * Session is already logged out, but we need 3979 * to notify initiator, who's not aware of this 3980 */ 3981 cmd->sess->send_els_logo = 1; 3982 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3983 "%s %d %8phC post del sess\n", 3984 __func__, __LINE__, cmd->sess->port_name); 3985 3986 qlt_schedule_sess_for_deletion(cmd->sess); 3987 } 3988 break; 3989 } 3990 case CTIO_DIF_ERROR: { 3991 struct ctio_crc_from_fw *crc = 3992 (struct ctio_crc_from_fw *)ctio; 3993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3994 "qla_target(%d): CTIO with DIF_ERROR status %x " 3995 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3996 "expect_dif[0x%llx]\n", 3997 vha->vp_idx, status, cmd->state, se_cmd, 3998 *((u64 *)&crc->actual_dif[0]), 3999 *((u64 *)&crc->expected_dif[0])); 4000 4001 qlt_handle_dif_error(qpair, cmd, ctio); 4002 return; 4003 } 4004 default: 4005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4006 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4007 vha->vp_idx, status, cmd->state, se_cmd); 4008 break; 4009 } 4010 4011 4012 /* "cmd->aborted" means 4013 * cmd is already aborted/terminated, we don't 4014 * need to terminate again. The exchange is already 4015 * cleaned up/freed at FW level. Just cleanup at driver 4016 * level. 4017 */ 4018 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4019 (!cmd->aborted)) { 4020 cmd->trc_flags |= TRC_CTIO_ERR; 4021 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4022 return; 4023 } 4024 } 4025 4026 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4027 cmd->trc_flags |= TRC_CTIO_DONE; 4028 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4029 cmd->state = QLA_TGT_STATE_DATA_IN; 4030 4031 if (status == CTIO_SUCCESS) 4032 cmd->write_data_transferred = 1; 4033 4034 ha->tgt.tgt_ops->handle_data(cmd); 4035 return; 4036 } else if (cmd->aborted) { 4037 cmd->trc_flags |= TRC_CTIO_ABORTED; 4038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4039 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4040 } else { 4041 cmd->trc_flags |= TRC_CTIO_STRANGE; 4042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4043 "qla_target(%d): A command in state (%d) should " 4044 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4045 } 4046 4047 if (unlikely(status != CTIO_SUCCESS) && 4048 !cmd->aborted) { 4049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4050 dump_stack(); 4051 } 4052 4053 ha->tgt.tgt_ops->free_cmd(cmd); 4054 } 4055 4056 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4057 uint8_t task_codes) 4058 { 4059 int fcp_task_attr; 4060 4061 switch (task_codes) { 4062 case ATIO_SIMPLE_QUEUE: 4063 fcp_task_attr = TCM_SIMPLE_TAG; 4064 break; 4065 case ATIO_HEAD_OF_QUEUE: 4066 fcp_task_attr = TCM_HEAD_TAG; 4067 break; 4068 case ATIO_ORDERED_QUEUE: 4069 fcp_task_attr = TCM_ORDERED_TAG; 4070 break; 4071 case ATIO_ACA_QUEUE: 4072 fcp_task_attr = TCM_ACA_TAG; 4073 break; 4074 case ATIO_UNTAGGED: 4075 fcp_task_attr = TCM_SIMPLE_TAG; 4076 break; 4077 default: 4078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4079 "qla_target: unknown task code %x, use ORDERED instead\n", 4080 task_codes); 4081 fcp_task_attr = TCM_ORDERED_TAG; 4082 break; 4083 } 4084 4085 return fcp_task_attr; 4086 } 4087 4088 /* 4089 * Process context for I/O path into tcm_qla2xxx code 4090 */ 4091 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4092 { 4093 scsi_qla_host_t *vha = cmd->vha; 4094 struct qla_hw_data *ha = vha->hw; 4095 struct fc_port *sess = cmd->sess; 4096 struct atio_from_isp *atio = &cmd->atio; 4097 unsigned char *cdb; 4098 unsigned long flags; 4099 uint32_t data_length; 4100 int ret, fcp_task_attr, data_dir, bidi = 0; 4101 struct qla_qpair *qpair = cmd->qpair; 4102 4103 cmd->cmd_in_wq = 0; 4104 cmd->trc_flags |= TRC_DO_WORK; 4105 4106 if (cmd->aborted) { 4107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4108 "cmd with tag %u is aborted\n", 4109 cmd->atio.u.isp24.exchange_addr); 4110 goto out_term; 4111 } 4112 4113 spin_lock_init(&cmd->cmd_lock); 4114 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4115 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4116 4117 if (atio->u.isp24.fcp_cmnd.rddata && 4118 atio->u.isp24.fcp_cmnd.wrdata) { 4119 bidi = 1; 4120 data_dir = DMA_TO_DEVICE; 4121 } else if (atio->u.isp24.fcp_cmnd.rddata) 4122 data_dir = DMA_FROM_DEVICE; 4123 else if (atio->u.isp24.fcp_cmnd.wrdata) 4124 data_dir = DMA_TO_DEVICE; 4125 else 4126 data_dir = DMA_NONE; 4127 4128 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4129 atio->u.isp24.fcp_cmnd.task_attr); 4130 data_length = get_datalen_for_atio(atio); 4131 4132 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4133 fcp_task_attr, data_dir, bidi); 4134 if (ret != 0) 4135 goto out_term; 4136 /* 4137 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4138 */ 4139 ha->tgt.tgt_ops->put_sess(sess); 4140 return; 4141 4142 out_term: 4143 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4144 /* 4145 * cmd has not sent to target yet, so pass NULL as the second 4146 * argument to qlt_send_term_exchange() and free the memory here. 4147 */ 4148 cmd->trc_flags |= TRC_DO_WORK_ERR; 4149 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4150 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4151 4152 qlt_decr_num_pend_cmds(vha); 4153 target_free_tag(sess->se_sess, &cmd->se_cmd); 4154 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4155 4156 ha->tgt.tgt_ops->put_sess(sess); 4157 } 4158 4159 static void qlt_do_work(struct work_struct *work) 4160 { 4161 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4162 scsi_qla_host_t *vha = cmd->vha; 4163 unsigned long flags; 4164 4165 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4166 list_del(&cmd->cmd_list); 4167 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4168 4169 __qlt_do_work(cmd); 4170 } 4171 4172 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4173 { 4174 unsigned long flags; 4175 struct qla_hw_data *ha = vha->hw; 4176 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4177 void *node; 4178 u64 key = 0; 4179 4180 ql_log(ql_log_info, vha, 0x706c, 4181 "User update Number of Active Qpairs %d\n", 4182 ha->tgt.num_act_qpairs); 4183 4184 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4185 4186 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4187 btree_remove64(&tgt->lun_qpair_map, key); 4188 4189 ha->base_qpair->lun_cnt = 0; 4190 for (key = 0; key < ha->max_qpairs; key++) 4191 if (ha->queue_pair_map[key]) 4192 ha->queue_pair_map[key]->lun_cnt = 0; 4193 4194 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4195 } 4196 4197 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4198 struct qla_tgt_cmd *cmd) 4199 { 4200 struct qla_qpair *qpair, *qp; 4201 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4202 struct qla_qpair_hint *h; 4203 4204 if (vha->flags.qpairs_available) { 4205 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4206 if (unlikely(!h)) { 4207 /* spread lun to qpair ratio evently */ 4208 int lcnt = 0, rc; 4209 struct scsi_qla_host *base_vha = 4210 pci_get_drvdata(vha->hw->pdev); 4211 4212 qpair = vha->hw->base_qpair; 4213 if (qpair->lun_cnt == 0) { 4214 qpair->lun_cnt++; 4215 h = qla_qpair_to_hint(tgt, qpair); 4216 BUG_ON(!h); 4217 rc = btree_insert64(&tgt->lun_qpair_map, 4218 cmd->unpacked_lun, h, GFP_ATOMIC); 4219 if (rc) { 4220 qpair->lun_cnt--; 4221 ql_log(ql_log_info, vha, 0xd037, 4222 "Unable to insert lun %llx into lun_qpair_map\n", 4223 cmd->unpacked_lun); 4224 } 4225 goto out; 4226 } else { 4227 lcnt = qpair->lun_cnt; 4228 } 4229 4230 h = NULL; 4231 list_for_each_entry(qp, &base_vha->qp_list, 4232 qp_list_elem) { 4233 if (qp->lun_cnt == 0) { 4234 qp->lun_cnt++; 4235 h = qla_qpair_to_hint(tgt, qp); 4236 BUG_ON(!h); 4237 rc = btree_insert64(&tgt->lun_qpair_map, 4238 cmd->unpacked_lun, h, GFP_ATOMIC); 4239 if (rc) { 4240 qp->lun_cnt--; 4241 ql_log(ql_log_info, vha, 0xd038, 4242 "Unable to insert lun %llx into lun_qpair_map\n", 4243 cmd->unpacked_lun); 4244 } 4245 qpair = qp; 4246 goto out; 4247 } else { 4248 if (qp->lun_cnt < lcnt) { 4249 lcnt = qp->lun_cnt; 4250 qpair = qp; 4251 continue; 4252 } 4253 } 4254 } 4255 BUG_ON(!qpair); 4256 qpair->lun_cnt++; 4257 h = qla_qpair_to_hint(tgt, qpair); 4258 BUG_ON(!h); 4259 rc = btree_insert64(&tgt->lun_qpair_map, 4260 cmd->unpacked_lun, h, GFP_ATOMIC); 4261 if (rc) { 4262 qpair->lun_cnt--; 4263 ql_log(ql_log_info, vha, 0xd039, 4264 "Unable to insert lun %llx into lun_qpair_map\n", 4265 cmd->unpacked_lun); 4266 } 4267 } 4268 } else { 4269 h = &tgt->qphints[0]; 4270 } 4271 out: 4272 cmd->qpair = h->qpair; 4273 cmd->se_cmd.cpuid = h->cpuid; 4274 } 4275 4276 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4277 struct fc_port *sess, 4278 struct atio_from_isp *atio) 4279 { 4280 struct se_session *se_sess = sess->se_sess; 4281 struct qla_tgt_cmd *cmd; 4282 int tag, cpu; 4283 4284 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 4285 if (tag < 0) 4286 return NULL; 4287 4288 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4289 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4290 cmd->cmd_type = TYPE_TGT_CMD; 4291 memcpy(&cmd->atio, atio, sizeof(*atio)); 4292 cmd->state = QLA_TGT_STATE_NEW; 4293 cmd->tgt = vha->vha_tgt.qla_tgt; 4294 qlt_incr_num_pend_cmds(vha); 4295 cmd->vha = vha; 4296 cmd->se_cmd.map_tag = tag; 4297 cmd->se_cmd.map_cpu = cpu; 4298 cmd->sess = sess; 4299 cmd->loop_id = sess->loop_id; 4300 cmd->conf_compl_supported = sess->conf_compl_supported; 4301 4302 cmd->trc_flags = 0; 4303 cmd->jiffies_at_alloc = get_jiffies_64(); 4304 4305 cmd->unpacked_lun = scsilun_to_int( 4306 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4307 qlt_assign_qpair(vha, cmd); 4308 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4309 cmd->vp_idx = vha->vp_idx; 4310 4311 return cmd; 4312 } 4313 4314 /* ha->hardware_lock supposed to be held on entry */ 4315 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4316 struct atio_from_isp *atio) 4317 { 4318 struct qla_hw_data *ha = vha->hw; 4319 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4320 struct fc_port *sess; 4321 struct qla_tgt_cmd *cmd; 4322 unsigned long flags; 4323 port_id_t id; 4324 4325 if (unlikely(tgt->tgt_stop)) { 4326 ql_dbg(ql_dbg_io, vha, 0x3061, 4327 "New command while device %p is shutting down\n", tgt); 4328 return -ENODEV; 4329 } 4330 4331 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4332 if (IS_SW_RESV_ADDR(id)) 4333 return -EBUSY; 4334 4335 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4336 if (unlikely(!sess)) 4337 return -EFAULT; 4338 4339 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4340 * session deletion, but it's still in sess_del_work wq */ 4341 if (sess->deleted) { 4342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4343 "New command while old session %p is being deleted\n", 4344 sess); 4345 return -EFAULT; 4346 } 4347 4348 /* 4349 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4350 */ 4351 if (!kref_get_unless_zero(&sess->sess_kref)) { 4352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4353 "%s: kref_get fail, %8phC oxid %x \n", 4354 __func__, sess->port_name, 4355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4356 return -EFAULT; 4357 } 4358 4359 cmd = qlt_get_tag(vha, sess, atio); 4360 if (!cmd) { 4361 ql_dbg(ql_dbg_io, vha, 0x3062, 4362 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4363 ha->tgt.tgt_ops->put_sess(sess); 4364 return -EBUSY; 4365 } 4366 4367 cmd->cmd_in_wq = 1; 4368 cmd->trc_flags |= TRC_NEW_CMD; 4369 4370 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4371 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4372 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4373 4374 INIT_WORK(&cmd->work, qlt_do_work); 4375 if (vha->flags.qpairs_available) { 4376 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4377 } else if (ha->msix_count) { 4378 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4379 queue_work_on(smp_processor_id(), qla_tgt_wq, 4380 &cmd->work); 4381 else 4382 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4383 &cmd->work); 4384 } else { 4385 queue_work(qla_tgt_wq, &cmd->work); 4386 } 4387 4388 return 0; 4389 } 4390 4391 /* ha->hardware_lock supposed to be held on entry */ 4392 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4393 int fn, void *iocb, int flags) 4394 { 4395 struct scsi_qla_host *vha = sess->vha; 4396 struct qla_hw_data *ha = vha->hw; 4397 struct qla_tgt_mgmt_cmd *mcmd; 4398 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4399 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4400 4401 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4402 if (!mcmd) { 4403 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4404 "qla_target(%d): Allocation of management " 4405 "command failed, some commands and their data could " 4406 "leak\n", vha->vp_idx); 4407 return -ENOMEM; 4408 } 4409 memset(mcmd, 0, sizeof(*mcmd)); 4410 mcmd->sess = sess; 4411 4412 if (iocb) { 4413 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4414 sizeof(mcmd->orig_iocb.imm_ntfy)); 4415 } 4416 mcmd->tmr_func = fn; 4417 mcmd->flags = flags; 4418 mcmd->reset_count = ha->base_qpair->chip_reset; 4419 mcmd->qpair = h->qpair; 4420 mcmd->vha = vha; 4421 mcmd->se_cmd.cpuid = h->cpuid; 4422 mcmd->unpacked_lun = lun; 4423 4424 switch (fn) { 4425 case QLA_TGT_LUN_RESET: 4426 case QLA_TGT_CLEAR_TS: 4427 case QLA_TGT_ABORT_TS: 4428 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4429 /* fall through */ 4430 case QLA_TGT_CLEAR_ACA: 4431 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4432 mcmd->qpair = h->qpair; 4433 mcmd->se_cmd.cpuid = h->cpuid; 4434 break; 4435 4436 case QLA_TGT_TARGET_RESET: 4437 case QLA_TGT_NEXUS_LOSS_SESS: 4438 case QLA_TGT_NEXUS_LOSS: 4439 case QLA_TGT_ABORT_ALL: 4440 default: 4441 /* no-op */ 4442 break; 4443 } 4444 4445 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4446 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4447 &mcmd->work); 4448 4449 return 0; 4450 } 4451 4452 /* ha->hardware_lock supposed to be held on entry */ 4453 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4454 { 4455 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4456 struct qla_hw_data *ha = vha->hw; 4457 struct fc_port *sess; 4458 u64 unpacked_lun; 4459 int fn; 4460 unsigned long flags; 4461 4462 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4463 4464 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4465 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4466 a->u.isp24.fcp_hdr.s_id); 4467 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4468 4469 unpacked_lun = 4470 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4471 4472 if (sess == NULL || sess->deleted) 4473 return -EFAULT; 4474 4475 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4476 } 4477 4478 /* ha->hardware_lock supposed to be held on entry */ 4479 static int __qlt_abort_task(struct scsi_qla_host *vha, 4480 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4481 { 4482 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4483 struct qla_hw_data *ha = vha->hw; 4484 struct qla_tgt_mgmt_cmd *mcmd; 4485 u64 unpacked_lun; 4486 int rc; 4487 4488 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4489 if (mcmd == NULL) { 4490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4491 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4492 vha->vp_idx, __func__); 4493 return -ENOMEM; 4494 } 4495 memset(mcmd, 0, sizeof(*mcmd)); 4496 4497 mcmd->sess = sess; 4498 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4499 sizeof(mcmd->orig_iocb.imm_ntfy)); 4500 4501 unpacked_lun = 4502 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4503 mcmd->reset_count = ha->base_qpair->chip_reset; 4504 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4505 mcmd->qpair = ha->base_qpair; 4506 4507 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4508 le16_to_cpu(iocb->u.isp2x.seq_id)); 4509 if (rc != 0) { 4510 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4511 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4512 vha->vp_idx, rc); 4513 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4514 return -EFAULT; 4515 } 4516 4517 return 0; 4518 } 4519 4520 /* ha->hardware_lock supposed to be held on entry */ 4521 static int qlt_abort_task(struct scsi_qla_host *vha, 4522 struct imm_ntfy_from_isp *iocb) 4523 { 4524 struct qla_hw_data *ha = vha->hw; 4525 struct fc_port *sess; 4526 int loop_id; 4527 unsigned long flags; 4528 4529 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4530 4531 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4532 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4533 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4534 4535 if (sess == NULL) { 4536 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4537 "qla_target(%d): task abort for unexisting " 4538 "session\n", vha->vp_idx); 4539 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4540 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4541 } 4542 4543 return __qlt_abort_task(vha, iocb, sess); 4544 } 4545 4546 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4547 { 4548 if (rc != MBS_COMMAND_COMPLETE) { 4549 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4550 "%s: se_sess %p / sess %p from" 4551 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4552 " LOGO failed: %#x\n", 4553 __func__, 4554 fcport->se_sess, 4555 fcport, 4556 fcport->port_name, fcport->loop_id, 4557 fcport->d_id.b.domain, fcport->d_id.b.area, 4558 fcport->d_id.b.al_pa, rc); 4559 } 4560 4561 fcport->logout_completed = 1; 4562 } 4563 4564 /* 4565 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4566 * 4567 * Schedules sessions with matching port_id/loop_id but different wwn for 4568 * deletion. Returns existing session with matching wwn if present. 4569 * Null otherwise. 4570 */ 4571 struct fc_port * 4572 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4573 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4574 { 4575 struct fc_port *sess = NULL, *other_sess; 4576 uint64_t other_wwn; 4577 4578 *conflict_sess = NULL; 4579 4580 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4581 4582 other_wwn = wwn_to_u64(other_sess->port_name); 4583 4584 if (wwn == other_wwn) { 4585 WARN_ON(sess); 4586 sess = other_sess; 4587 continue; 4588 } 4589 4590 /* find other sess with nport_id collision */ 4591 if (port_id.b24 == other_sess->d_id.b24) { 4592 if (loop_id != other_sess->loop_id) { 4593 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4594 "Invalidating sess %p loop_id %d wwn %llx.\n", 4595 other_sess, other_sess->loop_id, other_wwn); 4596 4597 /* 4598 * logout_on_delete is set by default, but another 4599 * session that has the same s_id/loop_id combo 4600 * might have cleared it when requested this session 4601 * deletion, so don't touch it 4602 */ 4603 qlt_schedule_sess_for_deletion(other_sess); 4604 } else { 4605 /* 4606 * Another wwn used to have our s_id/loop_id 4607 * kill the session, but don't free the loop_id 4608 */ 4609 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4610 "Invalidating sess %p loop_id %d wwn %llx.\n", 4611 other_sess, other_sess->loop_id, other_wwn); 4612 4613 other_sess->keep_nport_handle = 1; 4614 if (other_sess->disc_state != DSC_DELETED) 4615 *conflict_sess = other_sess; 4616 qlt_schedule_sess_for_deletion(other_sess); 4617 } 4618 continue; 4619 } 4620 4621 /* find other sess with nport handle collision */ 4622 if ((loop_id == other_sess->loop_id) && 4623 (loop_id != FC_NO_LOOP_ID)) { 4624 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4625 "Invalidating sess %p loop_id %d wwn %llx.\n", 4626 other_sess, other_sess->loop_id, other_wwn); 4627 4628 /* Same loop_id but different s_id 4629 * Ok to kill and logout */ 4630 qlt_schedule_sess_for_deletion(other_sess); 4631 } 4632 } 4633 4634 return sess; 4635 } 4636 4637 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4638 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4639 { 4640 struct qla_tgt_sess_op *op; 4641 struct qla_tgt_cmd *cmd; 4642 uint32_t key; 4643 int count = 0; 4644 unsigned long flags; 4645 4646 key = (((u32)s_id->b.domain << 16) | 4647 ((u32)s_id->b.area << 8) | 4648 ((u32)s_id->b.al_pa)); 4649 4650 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4651 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4652 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4653 4654 if (op_key == key) { 4655 op->aborted = true; 4656 count++; 4657 } 4658 } 4659 4660 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4661 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4662 4663 if (op_key == key) { 4664 op->aborted = true; 4665 count++; 4666 } 4667 } 4668 4669 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4670 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4671 4672 if (cmd_key == key) { 4673 cmd->aborted = 1; 4674 count++; 4675 } 4676 } 4677 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4678 4679 return count; 4680 } 4681 4682 static int qlt_handle_login(struct scsi_qla_host *vha, 4683 struct imm_ntfy_from_isp *iocb) 4684 { 4685 struct fc_port *sess = NULL, *conflict_sess = NULL; 4686 uint64_t wwn; 4687 port_id_t port_id; 4688 uint16_t loop_id, wd3_lo; 4689 int res = 0; 4690 struct qlt_plogi_ack_t *pla; 4691 unsigned long flags; 4692 4693 lockdep_assert_held(&vha->hw->hardware_lock); 4694 4695 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4696 4697 port_id.b.domain = iocb->u.isp24.port_id[2]; 4698 port_id.b.area = iocb->u.isp24.port_id[1]; 4699 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4700 port_id.b.rsvd_1 = 0; 4701 4702 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4703 4704 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4705 abort_cmds_for_s_id(vha, &port_id); 4706 4707 if (wwn) { 4708 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4709 sess = qlt_find_sess_invalidate_other(vha, wwn, 4710 port_id, loop_id, &conflict_sess); 4711 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4712 } else { 4713 ql_dbg(ql_dbg_disc, vha, 0xffff, 4714 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4715 __func__, __LINE__, loop_id, port_id.b24); 4716 qlt_send_term_imm_notif(vha, iocb, 1); 4717 goto out; 4718 } 4719 4720 if (IS_SW_RESV_ADDR(port_id)) { 4721 res = 1; 4722 goto out; 4723 } 4724 4725 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4726 if (!pla) { 4727 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4728 "%s %d %8phC Term INOT due to mem alloc fail", 4729 __func__, __LINE__, 4730 iocb->u.isp24.port_name); 4731 qlt_send_term_imm_notif(vha, iocb, 1); 4732 goto out; 4733 } 4734 4735 if (conflict_sess) { 4736 conflict_sess->login_gen++; 4737 qlt_plogi_ack_link(vha, pla, conflict_sess, 4738 QLT_PLOGI_LINK_CONFLICT); 4739 } 4740 4741 if (!sess) { 4742 pla->ref_count++; 4743 ql_dbg(ql_dbg_disc, vha, 0xffff, 4744 "%s %d %8phC post new sess\n", 4745 __func__, __LINE__, iocb->u.isp24.port_name); 4746 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4747 qla24xx_post_newsess_work(vha, &port_id, 4748 iocb->u.isp24.port_name, 4749 iocb->u.isp24.u.plogi.node_name, 4750 pla, FC4_TYPE_UNKNOWN); 4751 else 4752 qla24xx_post_newsess_work(vha, &port_id, 4753 iocb->u.isp24.port_name, NULL, 4754 pla, FC4_TYPE_UNKNOWN); 4755 4756 goto out; 4757 } 4758 4759 if (sess->disc_state == DSC_UPD_FCPORT) { 4760 u16 sec; 4761 4762 /* 4763 * Remote port registration is still going on from 4764 * previous login. Allow it to finish before we 4765 * accept the new login. 4766 */ 4767 sess->next_disc_state = DSC_DELETE_PEND; 4768 sec = jiffies_to_msecs(jiffies - 4769 sess->jiffies_at_registration) / 1000; 4770 if (sess->sec_since_registration < sec && sec && 4771 !(sec % 5)) { 4772 sess->sec_since_registration = sec; 4773 ql_dbg(ql_dbg_disc, vha, 0xffff, 4774 "%s %8phC - Slow Rport registration (%d Sec)\n", 4775 __func__, sess->port_name, sec); 4776 } 4777 4778 if (!conflict_sess) { 4779 list_del(&pla->list); 4780 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4781 } 4782 4783 qlt_send_term_imm_notif(vha, iocb, 1); 4784 goto out; 4785 } 4786 4787 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4788 sess->d_id = port_id; 4789 sess->login_gen++; 4790 4791 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4792 sess->fw_login_state = DSC_LS_PRLI_PEND; 4793 sess->local = 0; 4794 sess->loop_id = loop_id; 4795 sess->d_id = port_id; 4796 sess->fw_login_state = DSC_LS_PRLI_PEND; 4797 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4798 4799 if (wd3_lo & BIT_7) 4800 sess->conf_compl_supported = 1; 4801 4802 if ((wd3_lo & BIT_4) == 0) 4803 sess->port_type = FCT_INITIATOR; 4804 else 4805 sess->port_type = FCT_TARGET; 4806 4807 } else 4808 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4809 4810 4811 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4812 "%s %d %8phC DS %d\n", 4813 __func__, __LINE__, sess->port_name, sess->disc_state); 4814 4815 switch (sess->disc_state) { 4816 case DSC_DELETED: 4817 case DSC_LOGIN_PEND: 4818 qlt_plogi_ack_unref(vha, pla); 4819 break; 4820 4821 default: 4822 /* 4823 * Under normal circumstances we want to release nport handle 4824 * during LOGO process to avoid nport handle leaks inside FW. 4825 * The exception is when LOGO is done while another PLOGI with 4826 * the same nport handle is waiting as might be the case here. 4827 * Note: there is always a possibily of a race where session 4828 * deletion has already started for other reasons (e.g. ACL 4829 * removal) and now PLOGI arrives: 4830 * 1. if PLOGI arrived in FW after nport handle has been freed, 4831 * FW must have assigned this PLOGI a new/same handle and we 4832 * can proceed ACK'ing it as usual when session deletion 4833 * completes. 4834 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4835 * bit reached it, the handle has now been released. We'll 4836 * get an error when we ACK this PLOGI. Nothing will be sent 4837 * back to initiator. Initiator should eventually retry 4838 * PLOGI and situation will correct itself. 4839 */ 4840 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4841 (sess->d_id.b24 == port_id.b24)); 4842 4843 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4844 "%s %d %8phC post del sess\n", 4845 __func__, __LINE__, sess->port_name); 4846 4847 4848 qlt_schedule_sess_for_deletion(sess); 4849 break; 4850 } 4851 out: 4852 return res; 4853 } 4854 4855 /* 4856 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4857 */ 4858 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4859 struct imm_ntfy_from_isp *iocb) 4860 { 4861 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4862 struct qla_hw_data *ha = vha->hw; 4863 struct fc_port *sess = NULL, *conflict_sess = NULL; 4864 uint64_t wwn; 4865 port_id_t port_id; 4866 uint16_t loop_id; 4867 uint16_t wd3_lo; 4868 int res = 0; 4869 unsigned long flags; 4870 4871 lockdep_assert_held(&ha->hardware_lock); 4872 4873 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4874 4875 port_id.b.domain = iocb->u.isp24.port_id[2]; 4876 port_id.b.area = iocb->u.isp24.port_id[1]; 4877 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4878 port_id.b.rsvd_1 = 0; 4879 4880 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4881 4882 ql_dbg(ql_dbg_disc, vha, 0xf026, 4883 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4884 vha->vp_idx, iocb->u.isp24.port_id[2], 4885 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4886 iocb->u.isp24.status_subcode, loop_id, 4887 iocb->u.isp24.port_name); 4888 4889 /* res = 1 means ack at the end of thread 4890 * res = 0 means ack async/later. 4891 */ 4892 switch (iocb->u.isp24.status_subcode) { 4893 case ELS_PLOGI: 4894 res = qlt_handle_login(vha, iocb); 4895 break; 4896 4897 case ELS_PRLI: 4898 if (N2N_TOPO(ha)) { 4899 sess = qla2x00_find_fcport_by_wwpn(vha, 4900 iocb->u.isp24.port_name, 1); 4901 4902 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4903 ql_dbg(ql_dbg_disc, vha, 0xffff, 4904 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4905 __func__, __LINE__, 4906 iocb->u.isp24.port_name); 4907 qlt_send_term_imm_notif(vha, iocb, 1); 4908 break; 4909 } 4910 4911 res = qlt_handle_login(vha, iocb); 4912 break; 4913 } 4914 4915 if (IS_SW_RESV_ADDR(port_id)) { 4916 res = 1; 4917 break; 4918 } 4919 4920 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4921 4922 if (wwn) { 4923 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4924 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4925 loop_id, &conflict_sess); 4926 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4927 } 4928 4929 if (conflict_sess) { 4930 switch (conflict_sess->disc_state) { 4931 case DSC_DELETED: 4932 case DSC_DELETE_PEND: 4933 break; 4934 default: 4935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4936 "PRLI with conflicting sess %p port %8phC\n", 4937 conflict_sess, conflict_sess->port_name); 4938 conflict_sess->fw_login_state = 4939 DSC_LS_PORT_UNAVAIL; 4940 qlt_send_term_imm_notif(vha, iocb, 1); 4941 res = 0; 4942 break; 4943 } 4944 } 4945 4946 if (sess != NULL) { 4947 bool delete = false; 4948 int sec; 4949 4950 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4951 switch (sess->fw_login_state) { 4952 case DSC_LS_PLOGI_PEND: 4953 case DSC_LS_PLOGI_COMP: 4954 case DSC_LS_PRLI_COMP: 4955 break; 4956 default: 4957 delete = true; 4958 break; 4959 } 4960 4961 switch (sess->disc_state) { 4962 case DSC_UPD_FCPORT: 4963 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4964 flags); 4965 4966 sec = jiffies_to_msecs(jiffies - 4967 sess->jiffies_at_registration)/1000; 4968 if (sess->sec_since_registration < sec && sec && 4969 !(sec % 5)) { 4970 sess->sec_since_registration = sec; 4971 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4972 "%s %8phC : Slow Rport registration(%d Sec)\n", 4973 __func__, sess->port_name, sec); 4974 } 4975 qlt_send_term_imm_notif(vha, iocb, 1); 4976 return 0; 4977 4978 case DSC_LOGIN_PEND: 4979 case DSC_GPDB: 4980 case DSC_LOGIN_COMPLETE: 4981 case DSC_ADISC: 4982 delete = false; 4983 break; 4984 default: 4985 break; 4986 } 4987 4988 if (delete) { 4989 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4990 flags); 4991 /* 4992 * Impatient initiator sent PRLI before last 4993 * PLOGI could finish. Will force him to re-try, 4994 * while last one finishes. 4995 */ 4996 ql_log(ql_log_warn, sess->vha, 0xf095, 4997 "sess %p PRLI received, before plogi ack.\n", 4998 sess); 4999 qlt_send_term_imm_notif(vha, iocb, 1); 5000 res = 0; 5001 break; 5002 } 5003 5004 /* 5005 * This shouldn't happen under normal circumstances, 5006 * since we have deleted the old session during PLOGI 5007 */ 5008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5009 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5010 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5011 5012 sess->local = 0; 5013 sess->loop_id = loop_id; 5014 sess->d_id = port_id; 5015 sess->fw_login_state = DSC_LS_PRLI_PEND; 5016 5017 if (wd3_lo & BIT_7) 5018 sess->conf_compl_supported = 1; 5019 5020 if ((wd3_lo & BIT_4) == 0) 5021 sess->port_type = FCT_INITIATOR; 5022 else 5023 sess->port_type = FCT_TARGET; 5024 5025 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5026 } 5027 res = 1; /* send notify ack */ 5028 5029 /* Make session global (not used in fabric mode) */ 5030 if (ha->current_topology != ISP_CFG_F) { 5031 if (sess) { 5032 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5033 "%s %d %8phC post nack\n", 5034 __func__, __LINE__, sess->port_name); 5035 qla24xx_post_nack_work(vha, sess, iocb, 5036 SRB_NACK_PRLI); 5037 res = 0; 5038 } else { 5039 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5040 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5041 qla2xxx_wake_dpc(vha); 5042 } 5043 } else { 5044 if (sess) { 5045 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5046 "%s %d %8phC post nack\n", 5047 __func__, __LINE__, sess->port_name); 5048 qla24xx_post_nack_work(vha, sess, iocb, 5049 SRB_NACK_PRLI); 5050 res = 0; 5051 } 5052 } 5053 break; 5054 5055 case ELS_TPRLO: 5056 if (le16_to_cpu(iocb->u.isp24.flags) & 5057 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5058 loop_id = 0xFFFF; 5059 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5060 res = 1; 5061 break; 5062 } 5063 /* fall through */ 5064 case ELS_LOGO: 5065 case ELS_PRLO: 5066 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5067 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5068 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5069 5070 if (sess) { 5071 sess->login_gen++; 5072 sess->fw_login_state = DSC_LS_LOGO_PEND; 5073 sess->logo_ack_needed = 1; 5074 memcpy(sess->iocb, iocb, IOCB_SIZE); 5075 } 5076 5077 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5078 5079 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5080 "%s: logo %llx res %d sess %p ", 5081 __func__, wwn, res, sess); 5082 if (res == 0) { 5083 /* 5084 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5085 * for LOGO_ACK & sess delete 5086 */ 5087 BUG_ON(!sess); 5088 res = 0; 5089 } else { 5090 /* cmd did not go to upper layer. */ 5091 if (sess) { 5092 qlt_schedule_sess_for_deletion(sess); 5093 res = 0; 5094 } 5095 /* else logo will be ack */ 5096 } 5097 break; 5098 case ELS_PDISC: 5099 case ELS_ADISC: 5100 { 5101 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5102 5103 if (tgt->link_reinit_iocb_pending) { 5104 qlt_send_notify_ack(ha->base_qpair, 5105 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5106 tgt->link_reinit_iocb_pending = 0; 5107 } 5108 5109 sess = qla2x00_find_fcport_by_wwpn(vha, 5110 iocb->u.isp24.port_name, 1); 5111 if (sess) { 5112 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5113 "sess %p lid %d|%d DS %d LS %d\n", 5114 sess, sess->loop_id, loop_id, 5115 sess->disc_state, sess->fw_login_state); 5116 } 5117 5118 res = 1; /* send notify ack */ 5119 break; 5120 } 5121 5122 case ELS_FLOGI: /* should never happen */ 5123 default: 5124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5125 "qla_target(%d): Unsupported ELS command %x " 5126 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5127 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5128 break; 5129 } 5130 5131 ql_dbg(ql_dbg_disc, vha, 0xf026, 5132 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5133 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5134 5135 return res; 5136 } 5137 5138 /* 5139 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5140 */ 5141 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5142 struct imm_ntfy_from_isp *iocb) 5143 { 5144 struct qla_hw_data *ha = vha->hw; 5145 uint32_t add_flags = 0; 5146 int send_notify_ack = 1; 5147 uint16_t status; 5148 5149 lockdep_assert_held(&ha->hardware_lock); 5150 5151 status = le16_to_cpu(iocb->u.isp2x.status); 5152 switch (status) { 5153 case IMM_NTFY_LIP_RESET: 5154 { 5155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5156 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5157 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5158 iocb->u.isp24.status_subcode); 5159 5160 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5161 send_notify_ack = 0; 5162 break; 5163 } 5164 5165 case IMM_NTFY_LIP_LINK_REINIT: 5166 { 5167 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5168 5169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5170 "qla_target(%d): LINK REINIT (loop %#x, " 5171 "subcode %x)\n", vha->vp_idx, 5172 le16_to_cpu(iocb->u.isp24.nport_handle), 5173 iocb->u.isp24.status_subcode); 5174 if (tgt->link_reinit_iocb_pending) { 5175 qlt_send_notify_ack(ha->base_qpair, 5176 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5177 } 5178 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5179 tgt->link_reinit_iocb_pending = 1; 5180 /* 5181 * QLogic requires to wait after LINK REINIT for possible 5182 * PDISC or ADISC ELS commands 5183 */ 5184 send_notify_ack = 0; 5185 break; 5186 } 5187 5188 case IMM_NTFY_PORT_LOGOUT: 5189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5190 "qla_target(%d): Port logout (loop " 5191 "%#x, subcode %x)\n", vha->vp_idx, 5192 le16_to_cpu(iocb->u.isp24.nport_handle), 5193 iocb->u.isp24.status_subcode); 5194 5195 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5196 send_notify_ack = 0; 5197 /* The sessions will be cleared in the callback, if needed */ 5198 break; 5199 5200 case IMM_NTFY_GLBL_TPRLO: 5201 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5202 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5203 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5204 send_notify_ack = 0; 5205 /* The sessions will be cleared in the callback, if needed */ 5206 break; 5207 5208 case IMM_NTFY_PORT_CONFIG: 5209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5210 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5211 status); 5212 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5213 send_notify_ack = 0; 5214 /* The sessions will be cleared in the callback, if needed */ 5215 break; 5216 5217 case IMM_NTFY_GLBL_LOGO: 5218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5219 "qla_target(%d): Link failure detected\n", 5220 vha->vp_idx); 5221 /* I_T nexus loss */ 5222 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5223 send_notify_ack = 0; 5224 break; 5225 5226 case IMM_NTFY_IOCB_OVERFLOW: 5227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5228 "qla_target(%d): Cannot provide requested " 5229 "capability (IOCB overflowed the immediate notify " 5230 "resource count)\n", vha->vp_idx); 5231 break; 5232 5233 case IMM_NTFY_ABORT_TASK: 5234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5235 "qla_target(%d): Abort Task (S %08x I %#x -> " 5236 "L %#x)\n", vha->vp_idx, 5237 le16_to_cpu(iocb->u.isp2x.seq_id), 5238 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5239 le16_to_cpu(iocb->u.isp2x.lun)); 5240 if (qlt_abort_task(vha, iocb) == 0) 5241 send_notify_ack = 0; 5242 break; 5243 5244 case IMM_NTFY_RESOURCE: 5245 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5246 "qla_target(%d): Out of resources, host %ld\n", 5247 vha->vp_idx, vha->host_no); 5248 break; 5249 5250 case IMM_NTFY_MSG_RX: 5251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5252 "qla_target(%d): Immediate notify task %x\n", 5253 vha->vp_idx, iocb->u.isp2x.task_flags); 5254 break; 5255 5256 case IMM_NTFY_ELS: 5257 if (qlt_24xx_handle_els(vha, iocb) == 0) 5258 send_notify_ack = 0; 5259 break; 5260 default: 5261 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5262 "qla_target(%d): Received unknown immediate " 5263 "notify status %x\n", vha->vp_idx, status); 5264 break; 5265 } 5266 5267 if (send_notify_ack) 5268 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5269 0, 0); 5270 } 5271 5272 /* 5273 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5274 * This function sends busy to ISP 2xxx or 24xx. 5275 */ 5276 static int __qlt_send_busy(struct qla_qpair *qpair, 5277 struct atio_from_isp *atio, uint16_t status) 5278 { 5279 struct scsi_qla_host *vha = qpair->vha; 5280 struct ctio7_to_24xx *ctio24; 5281 struct qla_hw_data *ha = vha->hw; 5282 request_t *pkt; 5283 struct fc_port *sess = NULL; 5284 unsigned long flags; 5285 u16 temp; 5286 port_id_t id; 5287 5288 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5289 5290 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5291 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5292 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5293 if (!sess) { 5294 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5295 return 0; 5296 } 5297 /* Sending marker isn't necessary, since we called from ISR */ 5298 5299 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5300 if (!pkt) { 5301 ql_dbg(ql_dbg_io, vha, 0x3063, 5302 "qla_target(%d): %s failed: unable to allocate " 5303 "request packet", vha->vp_idx, __func__); 5304 return -ENOMEM; 5305 } 5306 5307 qpair->tgt_counters.num_q_full_sent++; 5308 pkt->entry_count = 1; 5309 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5310 5311 ctio24 = (struct ctio7_to_24xx *)pkt; 5312 ctio24->entry_type = CTIO_TYPE7; 5313 ctio24->nport_handle = sess->loop_id; 5314 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5315 ctio24->vp_index = vha->vp_idx; 5316 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5317 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5318 temp = (atio->u.isp24.attr << 9) | 5319 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5320 CTIO7_FLAGS_DONT_RET_CTIO; 5321 ctio24->u.status1.flags = cpu_to_le16(temp); 5322 /* 5323 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5324 * if the explicit conformation is used. 5325 */ 5326 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5327 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5328 5329 ctio24->u.status1.residual = get_datalen_for_atio(atio); 5330 5331 if (ctio24->u.status1.residual != 0) 5332 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 5333 5334 /* Memory Barrier */ 5335 wmb(); 5336 if (qpair->reqq_start_iocbs) 5337 qpair->reqq_start_iocbs(qpair); 5338 else 5339 qla2x00_start_iocbs(vha, qpair->req); 5340 return 0; 5341 } 5342 5343 /* 5344 * This routine is used to allocate a command for either a QFull condition 5345 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5346 * out previously. 5347 */ 5348 static void 5349 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5350 struct atio_from_isp *atio, uint16_t status, int qfull) 5351 { 5352 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5353 struct qla_hw_data *ha = vha->hw; 5354 struct fc_port *sess; 5355 struct se_session *se_sess; 5356 struct qla_tgt_cmd *cmd; 5357 int tag, cpu; 5358 unsigned long flags; 5359 5360 if (unlikely(tgt->tgt_stop)) { 5361 ql_dbg(ql_dbg_io, vha, 0x300a, 5362 "New command while device %p is shutting down\n", tgt); 5363 return; 5364 } 5365 5366 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5367 vha->hw->tgt.num_qfull_cmds_dropped++; 5368 if (vha->hw->tgt.num_qfull_cmds_dropped > 5369 vha->qla_stats.stat_max_qfull_cmds_dropped) 5370 vha->qla_stats.stat_max_qfull_cmds_dropped = 5371 vha->hw->tgt.num_qfull_cmds_dropped; 5372 5373 ql_dbg(ql_dbg_io, vha, 0x3068, 5374 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5375 vha->vp_idx, __func__, 5376 vha->hw->tgt.num_qfull_cmds_dropped); 5377 5378 qlt_chk_exch_leak_thresh_hold(vha); 5379 return; 5380 } 5381 5382 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5383 (vha, atio->u.isp24.fcp_hdr.s_id); 5384 if (!sess) 5385 return; 5386 5387 se_sess = sess->se_sess; 5388 5389 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 5390 if (tag < 0) { 5391 ql_dbg(ql_dbg_io, vha, 0x3009, 5392 "qla_target(%d): %s: Allocation of cmd failed\n", 5393 vha->vp_idx, __func__); 5394 5395 vha->hw->tgt.num_qfull_cmds_dropped++; 5396 if (vha->hw->tgt.num_qfull_cmds_dropped > 5397 vha->qla_stats.stat_max_qfull_cmds_dropped) 5398 vha->qla_stats.stat_max_qfull_cmds_dropped = 5399 vha->hw->tgt.num_qfull_cmds_dropped; 5400 5401 qlt_chk_exch_leak_thresh_hold(vha); 5402 return; 5403 } 5404 5405 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5406 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5407 5408 qlt_incr_num_pend_cmds(vha); 5409 INIT_LIST_HEAD(&cmd->cmd_list); 5410 memcpy(&cmd->atio, atio, sizeof(*atio)); 5411 5412 cmd->tgt = vha->vha_tgt.qla_tgt; 5413 cmd->vha = vha; 5414 cmd->reset_count = ha->base_qpair->chip_reset; 5415 cmd->q_full = 1; 5416 cmd->qpair = ha->base_qpair; 5417 cmd->se_cmd.map_cpu = cpu; 5418 5419 if (qfull) { 5420 cmd->q_full = 1; 5421 /* NOTE: borrowing the state field to carry the status */ 5422 cmd->state = status; 5423 } else 5424 cmd->term_exchg = 1; 5425 5426 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5427 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5428 5429 vha->hw->tgt.num_qfull_cmds_alloc++; 5430 if (vha->hw->tgt.num_qfull_cmds_alloc > 5431 vha->qla_stats.stat_max_qfull_cmds_alloc) 5432 vha->qla_stats.stat_max_qfull_cmds_alloc = 5433 vha->hw->tgt.num_qfull_cmds_alloc; 5434 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5435 } 5436 5437 int 5438 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5439 { 5440 struct scsi_qla_host *vha = qpair->vha; 5441 struct qla_hw_data *ha = vha->hw; 5442 unsigned long flags; 5443 struct qla_tgt_cmd *cmd, *tcmd; 5444 struct list_head free_list, q_full_list; 5445 int rc = 0; 5446 5447 if (list_empty(&ha->tgt.q_full_list)) 5448 return 0; 5449 5450 INIT_LIST_HEAD(&free_list); 5451 INIT_LIST_HEAD(&q_full_list); 5452 5453 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5454 if (list_empty(&ha->tgt.q_full_list)) { 5455 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5456 return 0; 5457 } 5458 5459 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5460 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5461 5462 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5463 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5464 if (cmd->q_full) 5465 /* cmd->state is a borrowed field to hold status */ 5466 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5467 else if (cmd->term_exchg) 5468 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5469 5470 if (rc == -ENOMEM) 5471 break; 5472 5473 if (cmd->q_full) 5474 ql_dbg(ql_dbg_io, vha, 0x3006, 5475 "%s: busy sent for ox_id[%04x]\n", __func__, 5476 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5477 else if (cmd->term_exchg) 5478 ql_dbg(ql_dbg_io, vha, 0x3007, 5479 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5480 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5481 else 5482 ql_dbg(ql_dbg_io, vha, 0x3008, 5483 "%s: Unexpected cmd in QFull list %p\n", __func__, 5484 cmd); 5485 5486 list_del(&cmd->cmd_list); 5487 list_add_tail(&cmd->cmd_list, &free_list); 5488 5489 /* piggy back on hardware_lock for protection */ 5490 vha->hw->tgt.num_qfull_cmds_alloc--; 5491 } 5492 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5493 5494 cmd = NULL; 5495 5496 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5497 list_del(&cmd->cmd_list); 5498 /* This cmd was never sent to TCM. There is no need 5499 * to schedule free or call free_cmd 5500 */ 5501 qlt_free_cmd(cmd); 5502 } 5503 5504 if (!list_empty(&q_full_list)) { 5505 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5506 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5507 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5508 } 5509 5510 return rc; 5511 } 5512 5513 static void 5514 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5515 uint16_t status) 5516 { 5517 int rc = 0; 5518 struct scsi_qla_host *vha = qpair->vha; 5519 5520 rc = __qlt_send_busy(qpair, atio, status); 5521 if (rc == -ENOMEM) 5522 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5523 } 5524 5525 static int 5526 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5527 struct atio_from_isp *atio, uint8_t ha_locked) 5528 { 5529 struct qla_hw_data *ha = vha->hw; 5530 unsigned long flags; 5531 5532 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5533 return 0; 5534 5535 if (!ha_locked) 5536 spin_lock_irqsave(&ha->hardware_lock, flags); 5537 qlt_send_busy(qpair, atio, qla_sam_status); 5538 if (!ha_locked) 5539 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5540 5541 return 1; 5542 } 5543 5544 /* ha->hardware_lock supposed to be held on entry */ 5545 /* called via callback from qla2xxx */ 5546 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5547 struct atio_from_isp *atio, uint8_t ha_locked) 5548 { 5549 struct qla_hw_data *ha = vha->hw; 5550 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5551 int rc; 5552 unsigned long flags = 0; 5553 5554 if (unlikely(tgt == NULL)) { 5555 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5556 "ATIO pkt, but no tgt (ha %p)", ha); 5557 return; 5558 } 5559 /* 5560 * In tgt_stop mode we also should allow all requests to pass. 5561 * Otherwise, some commands can stuck. 5562 */ 5563 5564 tgt->atio_irq_cmd_count++; 5565 5566 switch (atio->u.raw.entry_type) { 5567 case ATIO_TYPE7: 5568 if (unlikely(atio->u.isp24.exchange_addr == 5569 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5570 ql_dbg(ql_dbg_io, vha, 0x3065, 5571 "qla_target(%d): ATIO_TYPE7 " 5572 "received with UNKNOWN exchange address, " 5573 "sending QUEUE_FULL\n", vha->vp_idx); 5574 if (!ha_locked) 5575 spin_lock_irqsave(&ha->hardware_lock, flags); 5576 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5577 if (!ha_locked) 5578 spin_unlock_irqrestore(&ha->hardware_lock, 5579 flags); 5580 break; 5581 } 5582 5583 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5584 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5585 atio, ha_locked); 5586 if (rc != 0) { 5587 tgt->atio_irq_cmd_count--; 5588 return; 5589 } 5590 rc = qlt_handle_cmd_for_atio(vha, atio); 5591 } else { 5592 rc = qlt_handle_task_mgmt(vha, atio); 5593 } 5594 if (unlikely(rc != 0)) { 5595 if (!ha_locked) 5596 spin_lock_irqsave(&ha->hardware_lock, flags); 5597 switch (rc) { 5598 case -ENODEV: 5599 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5600 "qla_target: Unable to send command to target\n"); 5601 break; 5602 case -EBADF: 5603 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5604 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5605 qlt_send_term_exchange(ha->base_qpair, NULL, 5606 atio, 1, 0); 5607 break; 5608 case -EBUSY: 5609 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5610 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5611 vha->vp_idx); 5612 qlt_send_busy(ha->base_qpair, atio, 5613 tc_sam_status); 5614 break; 5615 default: 5616 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5617 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5618 vha->vp_idx); 5619 qlt_send_busy(ha->base_qpair, atio, 5620 qla_sam_status); 5621 break; 5622 } 5623 if (!ha_locked) 5624 spin_unlock_irqrestore(&ha->hardware_lock, 5625 flags); 5626 } 5627 break; 5628 5629 case IMMED_NOTIFY_TYPE: 5630 { 5631 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5632 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5633 "qla_target(%d): Received ATIO packet %x " 5634 "with error status %x\n", vha->vp_idx, 5635 atio->u.raw.entry_type, 5636 atio->u.isp2x.entry_status); 5637 break; 5638 } 5639 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5640 5641 if (!ha_locked) 5642 spin_lock_irqsave(&ha->hardware_lock, flags); 5643 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5644 if (!ha_locked) 5645 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5646 break; 5647 } 5648 5649 default: 5650 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5651 "qla_target(%d): Received unknown ATIO atio " 5652 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5653 break; 5654 } 5655 5656 tgt->atio_irq_cmd_count--; 5657 } 5658 5659 /* 5660 * qpair lock is assume to be held 5661 * rc = 0 : send terminate & abts respond 5662 * rc != 0: do not send term & abts respond 5663 */ 5664 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5665 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5666 { 5667 struct qla_hw_data *ha = vha->hw; 5668 int rc = 0; 5669 5670 /* 5671 * Detect unresolved exchange. If the same ABTS is unable 5672 * to terminate an existing command and the same ABTS loops 5673 * between FW & Driver, then force FW dump. Under 1 jiff, 5674 * we should see multiple loops. 5675 */ 5676 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5677 qpair->retry_term_jiff == jiffies) { 5678 /* found existing exchange */ 5679 qpair->retry_term_cnt++; 5680 if (qpair->retry_term_cnt >= 5) { 5681 rc = EIO; 5682 qpair->retry_term_cnt = 0; 5683 ql_log(ql_log_warn, vha, 0xffff, 5684 "Unable to send ABTS Respond. Dumping firmware.\n"); 5685 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5686 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5687 5688 if (qpair == ha->base_qpair) 5689 ha->isp_ops->fw_dump(vha, 1); 5690 else 5691 ha->isp_ops->fw_dump(vha, 0); 5692 5693 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5694 qla2xxx_wake_dpc(vha); 5695 } 5696 } else if (qpair->retry_term_jiff != jiffies) { 5697 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5698 qpair->retry_term_cnt = 0; 5699 qpair->retry_term_jiff = jiffies; 5700 } 5701 5702 return rc; 5703 } 5704 5705 5706 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5707 struct rsp_que *rsp, response_t *pkt) 5708 { 5709 struct abts_resp_from_24xx_fw *entry = 5710 (struct abts_resp_from_24xx_fw *)pkt; 5711 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5712 struct qla_tgt_mgmt_cmd *mcmd; 5713 struct qla_hw_data *ha = vha->hw; 5714 5715 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5716 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5717 ql_dbg(ql_dbg_async, vha, 0xe064, 5718 "qla_target(%d): ABTS Comp without mcmd\n", 5719 vha->vp_idx); 5720 return; 5721 } 5722 5723 if (mcmd) 5724 vha = mcmd->vha; 5725 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5726 5727 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5728 "ABTS_RESP_24XX: compl_status %x\n", 5729 entry->compl_status); 5730 5731 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5732 if ((entry->error_subcode1 == 0x1E) && 5733 (entry->error_subcode2 == 0)) { 5734 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5735 ha->tgt.tgt_ops->free_mcmd(mcmd); 5736 return; 5737 } 5738 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5739 pkt, mcmd); 5740 } else { 5741 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5742 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5743 vha->vp_idx, entry->compl_status, 5744 entry->error_subcode1, 5745 entry->error_subcode2); 5746 ha->tgt.tgt_ops->free_mcmd(mcmd); 5747 } 5748 } else if (mcmd) { 5749 ha->tgt.tgt_ops->free_mcmd(mcmd); 5750 } 5751 } 5752 5753 /* ha->hardware_lock supposed to be held on entry */ 5754 /* called via callback from qla2xxx */ 5755 static void qlt_response_pkt(struct scsi_qla_host *vha, 5756 struct rsp_que *rsp, response_t *pkt) 5757 { 5758 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5759 5760 if (unlikely(tgt == NULL)) { 5761 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5762 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5763 vha->vp_idx, pkt->entry_type, vha->hw); 5764 return; 5765 } 5766 5767 /* 5768 * In tgt_stop mode we also should allow all requests to pass. 5769 * Otherwise, some commands can stuck. 5770 */ 5771 5772 switch (pkt->entry_type) { 5773 case CTIO_CRC2: 5774 case CTIO_TYPE7: 5775 { 5776 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5777 5778 qlt_do_ctio_completion(vha, rsp, entry->handle, 5779 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5780 entry); 5781 break; 5782 } 5783 5784 case ACCEPT_TGT_IO_TYPE: 5785 { 5786 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5787 int rc; 5788 5789 if (atio->u.isp2x.status != 5790 cpu_to_le16(ATIO_CDB_VALID)) { 5791 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5792 "qla_target(%d): ATIO with error " 5793 "status %x received\n", vha->vp_idx, 5794 le16_to_cpu(atio->u.isp2x.status)); 5795 break; 5796 } 5797 5798 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5799 if (rc != 0) 5800 return; 5801 5802 rc = qlt_handle_cmd_for_atio(vha, atio); 5803 if (unlikely(rc != 0)) { 5804 switch (rc) { 5805 case -ENODEV: 5806 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5807 "qla_target: Unable to send command to target\n"); 5808 break; 5809 case -EBADF: 5810 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5811 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5812 qlt_send_term_exchange(rsp->qpair, NULL, 5813 atio, 1, 0); 5814 break; 5815 case -EBUSY: 5816 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5817 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5818 vha->vp_idx); 5819 qlt_send_busy(rsp->qpair, atio, 5820 tc_sam_status); 5821 break; 5822 default: 5823 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5824 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5825 vha->vp_idx); 5826 qlt_send_busy(rsp->qpair, atio, 5827 qla_sam_status); 5828 break; 5829 } 5830 } 5831 } 5832 break; 5833 5834 case CONTINUE_TGT_IO_TYPE: 5835 { 5836 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5837 5838 qlt_do_ctio_completion(vha, rsp, entry->handle, 5839 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5840 entry); 5841 break; 5842 } 5843 5844 case CTIO_A64_TYPE: 5845 { 5846 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5847 5848 qlt_do_ctio_completion(vha, rsp, entry->handle, 5849 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5850 entry); 5851 break; 5852 } 5853 5854 case IMMED_NOTIFY_TYPE: 5855 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5856 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5857 break; 5858 5859 case NOTIFY_ACK_TYPE: 5860 if (tgt->notify_ack_expected > 0) { 5861 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5862 5863 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5864 "NOTIFY_ACK seq %08x status %x\n", 5865 le16_to_cpu(entry->u.isp2x.seq_id), 5866 le16_to_cpu(entry->u.isp2x.status)); 5867 tgt->notify_ack_expected--; 5868 if (entry->u.isp2x.status != 5869 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5870 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5871 "qla_target(%d): NOTIFY_ACK " 5872 "failed %x\n", vha->vp_idx, 5873 le16_to_cpu(entry->u.isp2x.status)); 5874 } 5875 } else { 5876 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5877 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5878 vha->vp_idx); 5879 } 5880 break; 5881 5882 case ABTS_RECV_24XX: 5883 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5884 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5885 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5886 break; 5887 5888 case ABTS_RESP_24XX: 5889 if (tgt->abts_resp_expected > 0) { 5890 qlt_handle_abts_completion(vha, rsp, pkt); 5891 } else { 5892 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5893 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5894 "received\n", vha->vp_idx); 5895 } 5896 break; 5897 5898 default: 5899 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5900 "qla_target(%d): Received unknown response pkt " 5901 "type %x\n", vha->vp_idx, pkt->entry_type); 5902 break; 5903 } 5904 5905 } 5906 5907 /* 5908 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5909 */ 5910 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5911 uint16_t *mailbox) 5912 { 5913 struct qla_hw_data *ha = vha->hw; 5914 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5915 int login_code; 5916 5917 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5918 return; 5919 5920 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5921 IS_QLA2100(ha)) 5922 return; 5923 /* 5924 * In tgt_stop mode we also should allow all requests to pass. 5925 * Otherwise, some commands can stuck. 5926 */ 5927 5928 5929 switch (code) { 5930 case MBA_RESET: /* Reset */ 5931 case MBA_SYSTEM_ERR: /* System Error */ 5932 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5933 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5935 "qla_target(%d): System error async event %#x " 5936 "occurred", vha->vp_idx, code); 5937 break; 5938 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5939 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5940 break; 5941 5942 case MBA_LOOP_UP: 5943 { 5944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5945 "qla_target(%d): Async LOOP_UP occurred " 5946 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5947 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5948 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5949 if (tgt->link_reinit_iocb_pending) { 5950 qlt_send_notify_ack(ha->base_qpair, 5951 (void *)&tgt->link_reinit_iocb, 5952 0, 0, 0, 0, 0, 0); 5953 tgt->link_reinit_iocb_pending = 0; 5954 } 5955 break; 5956 } 5957 5958 case MBA_LIP_OCCURRED: 5959 case MBA_LOOP_DOWN: 5960 case MBA_LIP_RESET: 5961 case MBA_RSCN_UPDATE: 5962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5963 "qla_target(%d): Async event %#x occurred " 5964 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5965 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5966 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5967 break; 5968 5969 case MBA_REJECTED_FCP_CMD: 5970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5971 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5972 vha->vp_idx, 5973 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5974 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5975 5976 if (le16_to_cpu(mailbox[3]) == 1) { 5977 /* exchange starvation. */ 5978 vha->hw->exch_starvation++; 5979 if (vha->hw->exch_starvation > 5) { 5980 ql_log(ql_log_warn, vha, 0xd03a, 5981 "Exchange starvation-. Resetting RISC\n"); 5982 5983 vha->hw->exch_starvation = 0; 5984 if (IS_P3P_TYPE(vha->hw)) 5985 set_bit(FCOE_CTX_RESET_NEEDED, 5986 &vha->dpc_flags); 5987 else 5988 set_bit(ISP_ABORT_NEEDED, 5989 &vha->dpc_flags); 5990 qla2xxx_wake_dpc(vha); 5991 } 5992 } 5993 break; 5994 5995 case MBA_PORT_UPDATE: 5996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5997 "qla_target(%d): Port update async event %#x " 5998 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5999 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6000 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6001 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6002 6003 login_code = le16_to_cpu(mailbox[2]); 6004 if (login_code == 0x4) { 6005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6006 "Async MB 2: Got PLOGI Complete\n"); 6007 vha->hw->exch_starvation = 0; 6008 } else if (login_code == 0x7) 6009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6010 "Async MB 2: Port Logged Out\n"); 6011 break; 6012 default: 6013 break; 6014 } 6015 6016 } 6017 6018 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6019 uint16_t loop_id) 6020 { 6021 fc_port_t *fcport, *tfcp, *del; 6022 int rc; 6023 unsigned long flags; 6024 u8 newfcport = 0; 6025 6026 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6027 if (!fcport) { 6028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6029 "qla_target(%d): Allocation of tmp FC port failed", 6030 vha->vp_idx); 6031 return NULL; 6032 } 6033 6034 fcport->loop_id = loop_id; 6035 6036 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6037 if (rc != QLA_SUCCESS) { 6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6039 "qla_target(%d): Failed to retrieve fcport " 6040 "information -- get_port_database() returned %x " 6041 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6042 kfree(fcport); 6043 return NULL; 6044 } 6045 6046 del = NULL; 6047 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6048 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6049 6050 if (tfcp) { 6051 tfcp->d_id = fcport->d_id; 6052 tfcp->port_type = fcport->port_type; 6053 tfcp->supported_classes = fcport->supported_classes; 6054 tfcp->flags |= fcport->flags; 6055 tfcp->scan_state = QLA_FCPORT_FOUND; 6056 6057 del = fcport; 6058 fcport = tfcp; 6059 } else { 6060 if (vha->hw->current_topology == ISP_CFG_F) 6061 fcport->flags |= FCF_FABRIC_DEVICE; 6062 6063 list_add_tail(&fcport->list, &vha->vp_fcports); 6064 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6065 vha->fcport_count++; 6066 fcport->login_gen++; 6067 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6068 fcport->login_succ = 1; 6069 newfcport = 1; 6070 } 6071 6072 fcport->deleted = 0; 6073 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6074 6075 switch (vha->host->active_mode) { 6076 case MODE_INITIATOR: 6077 case MODE_DUAL: 6078 if (newfcport) { 6079 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6080 qla24xx_sched_upd_fcport(fcport); 6081 } else { 6082 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6083 "%s %d %8phC post gpsc fcp_cnt %d\n", 6084 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6085 qla24xx_post_gpsc_work(vha, fcport); 6086 } 6087 } 6088 break; 6089 6090 case MODE_TARGET: 6091 default: 6092 break; 6093 } 6094 if (del) 6095 qla2x00_free_fcport(del); 6096 6097 return fcport; 6098 } 6099 6100 /* Must be called under tgt_mutex */ 6101 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6102 be_id_t s_id) 6103 { 6104 struct fc_port *sess = NULL; 6105 fc_port_t *fcport = NULL; 6106 int rc, global_resets; 6107 uint16_t loop_id = 0; 6108 6109 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6110 /* 6111 * This is Domain Controller, so it should be 6112 * OK to drop SCSI commands from it. 6113 */ 6114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6115 "Unable to find initiator with S_ID %x:%x:%x", 6116 s_id.domain, s_id.area, s_id.al_pa); 6117 return NULL; 6118 } 6119 6120 mutex_lock(&vha->vha_tgt.tgt_mutex); 6121 6122 retry: 6123 global_resets = 6124 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6125 6126 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6127 if (rc != 0) { 6128 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6129 6130 ql_log(ql_log_info, vha, 0xf071, 6131 "qla_target(%d): Unable to find " 6132 "initiator with S_ID %x:%x:%x", 6133 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6134 6135 if (rc == -ENOENT) { 6136 qlt_port_logo_t logo; 6137 6138 logo.id = be_to_port_id(s_id); 6139 logo.cmd_count = 1; 6140 qlt_send_first_logo(vha, &logo); 6141 } 6142 6143 return NULL; 6144 } 6145 6146 fcport = qlt_get_port_database(vha, loop_id); 6147 if (!fcport) { 6148 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6149 return NULL; 6150 } 6151 6152 if (global_resets != 6153 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6155 "qla_target(%d): global reset during session discovery " 6156 "(counter was %d, new %d), retrying", vha->vp_idx, 6157 global_resets, 6158 atomic_read(&vha->vha_tgt. 6159 qla_tgt->tgt_global_resets_count)); 6160 goto retry; 6161 } 6162 6163 sess = qlt_create_sess(vha, fcport, true); 6164 6165 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6166 6167 return sess; 6168 } 6169 6170 static void qlt_abort_work(struct qla_tgt *tgt, 6171 struct qla_tgt_sess_work_param *prm) 6172 { 6173 struct scsi_qla_host *vha = tgt->vha; 6174 struct qla_hw_data *ha = vha->hw; 6175 struct fc_port *sess = NULL; 6176 unsigned long flags = 0, flags2 = 0; 6177 be_id_t s_id; 6178 int rc; 6179 6180 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6181 6182 if (tgt->tgt_stop) 6183 goto out_term2; 6184 6185 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6186 6187 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6188 if (!sess) { 6189 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6190 6191 sess = qlt_make_local_sess(vha, s_id); 6192 /* sess has got an extra creation ref */ 6193 6194 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6195 if (!sess) 6196 goto out_term2; 6197 } else { 6198 if (sess->deleted) { 6199 sess = NULL; 6200 goto out_term2; 6201 } 6202 6203 if (!kref_get_unless_zero(&sess->sess_kref)) { 6204 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6205 "%s: kref_get fail %8phC \n", 6206 __func__, sess->port_name); 6207 sess = NULL; 6208 goto out_term2; 6209 } 6210 } 6211 6212 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6213 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6214 6215 ha->tgt.tgt_ops->put_sess(sess); 6216 6217 if (rc != 0) 6218 goto out_term; 6219 return; 6220 6221 out_term2: 6222 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6223 6224 out_term: 6225 spin_lock_irqsave(&ha->hardware_lock, flags); 6226 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6227 FCP_TMF_REJECTED, false); 6228 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6229 } 6230 6231 static void qlt_tmr_work(struct qla_tgt *tgt, 6232 struct qla_tgt_sess_work_param *prm) 6233 { 6234 struct atio_from_isp *a = &prm->tm_iocb2; 6235 struct scsi_qla_host *vha = tgt->vha; 6236 struct qla_hw_data *ha = vha->hw; 6237 struct fc_port *sess; 6238 unsigned long flags; 6239 be_id_t s_id; 6240 int rc; 6241 u64 unpacked_lun; 6242 int fn; 6243 void *iocb; 6244 6245 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6246 6247 if (tgt->tgt_stop) 6248 goto out_term2; 6249 6250 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6251 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6252 if (!sess) { 6253 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6254 6255 sess = qlt_make_local_sess(vha, s_id); 6256 /* sess has got an extra creation ref */ 6257 6258 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6259 if (!sess) 6260 goto out_term2; 6261 } else { 6262 if (sess->deleted) { 6263 goto out_term2; 6264 } 6265 6266 if (!kref_get_unless_zero(&sess->sess_kref)) { 6267 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6268 "%s: kref_get fail %8phC\n", 6269 __func__, sess->port_name); 6270 goto out_term2; 6271 } 6272 } 6273 6274 iocb = a; 6275 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6276 unpacked_lun = 6277 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6278 6279 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6280 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6281 6282 ha->tgt.tgt_ops->put_sess(sess); 6283 6284 if (rc != 0) 6285 goto out_term; 6286 return; 6287 6288 out_term2: 6289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6290 out_term: 6291 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6292 } 6293 6294 static void qlt_sess_work_fn(struct work_struct *work) 6295 { 6296 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6297 struct scsi_qla_host *vha = tgt->vha; 6298 unsigned long flags; 6299 6300 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6301 6302 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6303 while (!list_empty(&tgt->sess_works_list)) { 6304 struct qla_tgt_sess_work_param *prm = list_entry( 6305 tgt->sess_works_list.next, typeof(*prm), 6306 sess_works_list_entry); 6307 6308 /* 6309 * This work can be scheduled on several CPUs at time, so we 6310 * must delete the entry to eliminate double processing 6311 */ 6312 list_del(&prm->sess_works_list_entry); 6313 6314 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6315 6316 switch (prm->type) { 6317 case QLA_TGT_SESS_WORK_ABORT: 6318 qlt_abort_work(tgt, prm); 6319 break; 6320 case QLA_TGT_SESS_WORK_TM: 6321 qlt_tmr_work(tgt, prm); 6322 break; 6323 default: 6324 BUG_ON(1); 6325 break; 6326 } 6327 6328 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6329 6330 kfree(prm); 6331 } 6332 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6333 } 6334 6335 /* Must be called under tgt_host_action_mutex */ 6336 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6337 { 6338 struct qla_tgt *tgt; 6339 int rc, i; 6340 struct qla_qpair_hint *h; 6341 6342 if (!QLA_TGT_MODE_ENABLED()) 6343 return 0; 6344 6345 if (!IS_TGT_MODE_CAPABLE(ha)) { 6346 ql_log(ql_log_warn, base_vha, 0xe070, 6347 "This adapter does not support target mode.\n"); 6348 return 0; 6349 } 6350 6351 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6352 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6353 6354 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6355 6356 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6357 if (!tgt) { 6358 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6359 "Unable to allocate struct qla_tgt\n"); 6360 return -ENOMEM; 6361 } 6362 6363 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6364 sizeof(struct qla_qpair_hint), 6365 GFP_KERNEL); 6366 if (!tgt->qphints) { 6367 kfree(tgt); 6368 ql_log(ql_log_warn, base_vha, 0x0197, 6369 "Unable to allocate qpair hints.\n"); 6370 return -ENOMEM; 6371 } 6372 6373 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6374 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6375 6376 rc = btree_init64(&tgt->lun_qpair_map); 6377 if (rc) { 6378 kfree(tgt->qphints); 6379 kfree(tgt); 6380 ql_log(ql_log_info, base_vha, 0x0198, 6381 "Unable to initialize lun_qpair_map btree\n"); 6382 return -EIO; 6383 } 6384 h = &tgt->qphints[0]; 6385 h->qpair = ha->base_qpair; 6386 INIT_LIST_HEAD(&h->hint_elem); 6387 h->cpuid = ha->base_qpair->cpuid; 6388 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6389 6390 for (i = 0; i < ha->max_qpairs; i++) { 6391 unsigned long flags; 6392 6393 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6394 6395 h = &tgt->qphints[i + 1]; 6396 INIT_LIST_HEAD(&h->hint_elem); 6397 if (qpair) { 6398 h->qpair = qpair; 6399 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6400 list_add_tail(&h->hint_elem, &qpair->hints_list); 6401 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6402 h->cpuid = qpair->cpuid; 6403 } 6404 } 6405 6406 tgt->ha = ha; 6407 tgt->vha = base_vha; 6408 init_waitqueue_head(&tgt->waitQ); 6409 INIT_LIST_HEAD(&tgt->del_sess_list); 6410 spin_lock_init(&tgt->sess_work_lock); 6411 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6412 INIT_LIST_HEAD(&tgt->sess_works_list); 6413 atomic_set(&tgt->tgt_global_resets_count, 0); 6414 6415 base_vha->vha_tgt.qla_tgt = tgt; 6416 6417 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6418 "qla_target(%d): using 64 Bit PCI addressing", 6419 base_vha->vp_idx); 6420 /* 3 is reserved */ 6421 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6422 6423 mutex_lock(&qla_tgt_mutex); 6424 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6425 mutex_unlock(&qla_tgt_mutex); 6426 6427 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6428 ha->tgt.tgt_ops->add_target(base_vha); 6429 6430 return 0; 6431 } 6432 6433 /* Must be called under tgt_host_action_mutex */ 6434 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6435 { 6436 if (!vha->vha_tgt.qla_tgt) 6437 return 0; 6438 6439 if (vha->fc_vport) { 6440 qlt_release(vha->vha_tgt.qla_tgt); 6441 return 0; 6442 } 6443 6444 /* free left over qfull cmds */ 6445 qlt_init_term_exchange(vha); 6446 6447 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6448 vha->host_no, ha); 6449 qlt_release(vha->vha_tgt.qla_tgt); 6450 6451 return 0; 6452 } 6453 6454 void qlt_remove_target_resources(struct qla_hw_data *ha) 6455 { 6456 struct scsi_qla_host *node; 6457 u32 key = 0; 6458 6459 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6460 btree_remove32(&ha->tgt.host_map, key); 6461 6462 btree_destroy32(&ha->tgt.host_map); 6463 } 6464 6465 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6466 unsigned char *b) 6467 { 6468 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6469 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6470 put_unaligned_be64(wwpn, b); 6471 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6472 } 6473 6474 /** 6475 * qla_tgt_lport_register - register lport with external module 6476 * 6477 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6478 * @phys_wwpn: physical port WWPN 6479 * @npiv_wwpn: NPIV WWPN 6480 * @npiv_wwnn: NPIV WWNN 6481 * @callback: lport initialization callback for tcm_qla2xxx code 6482 */ 6483 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6484 u64 npiv_wwpn, u64 npiv_wwnn, 6485 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6486 { 6487 struct qla_tgt *tgt; 6488 struct scsi_qla_host *vha; 6489 struct qla_hw_data *ha; 6490 struct Scsi_Host *host; 6491 unsigned long flags; 6492 int rc; 6493 u8 b[WWN_SIZE]; 6494 6495 mutex_lock(&qla_tgt_mutex); 6496 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6497 vha = tgt->vha; 6498 ha = vha->hw; 6499 6500 host = vha->host; 6501 if (!host) 6502 continue; 6503 6504 if (!(host->hostt->supported_mode & MODE_TARGET)) 6505 continue; 6506 6507 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6508 continue; 6509 6510 spin_lock_irqsave(&ha->hardware_lock, flags); 6511 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6512 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6513 host->host_no); 6514 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6515 continue; 6516 } 6517 if (tgt->tgt_stop) { 6518 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6519 host->host_no); 6520 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6521 continue; 6522 } 6523 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6524 6525 if (!scsi_host_get(host)) { 6526 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6527 "Unable to scsi_host_get() for" 6528 " qla2xxx scsi_host\n"); 6529 continue; 6530 } 6531 qlt_lport_dump(vha, phys_wwpn, b); 6532 6533 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6534 scsi_host_put(host); 6535 continue; 6536 } 6537 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6538 if (rc != 0) 6539 scsi_host_put(host); 6540 6541 mutex_unlock(&qla_tgt_mutex); 6542 return rc; 6543 } 6544 mutex_unlock(&qla_tgt_mutex); 6545 6546 return -ENODEV; 6547 } 6548 EXPORT_SYMBOL(qlt_lport_register); 6549 6550 /** 6551 * qla_tgt_lport_deregister - Degister lport 6552 * 6553 * @vha: Registered scsi_qla_host pointer 6554 */ 6555 void qlt_lport_deregister(struct scsi_qla_host *vha) 6556 { 6557 struct qla_hw_data *ha = vha->hw; 6558 struct Scsi_Host *sh = vha->host; 6559 /* 6560 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6561 */ 6562 vha->vha_tgt.target_lport_ptr = NULL; 6563 ha->tgt.tgt_ops = NULL; 6564 /* 6565 * Release the Scsi_Host reference for the underlying qla2xxx host 6566 */ 6567 scsi_host_put(sh); 6568 } 6569 EXPORT_SYMBOL(qlt_lport_deregister); 6570 6571 /* Must be called under HW lock */ 6572 void qlt_set_mode(struct scsi_qla_host *vha) 6573 { 6574 switch (vha->qlini_mode) { 6575 case QLA2XXX_INI_MODE_DISABLED: 6576 case QLA2XXX_INI_MODE_EXCLUSIVE: 6577 vha->host->active_mode = MODE_TARGET; 6578 break; 6579 case QLA2XXX_INI_MODE_ENABLED: 6580 vha->host->active_mode = MODE_INITIATOR; 6581 break; 6582 case QLA2XXX_INI_MODE_DUAL: 6583 vha->host->active_mode = MODE_DUAL; 6584 break; 6585 default: 6586 break; 6587 } 6588 } 6589 6590 /* Must be called under HW lock */ 6591 static void qlt_clear_mode(struct scsi_qla_host *vha) 6592 { 6593 switch (vha->qlini_mode) { 6594 case QLA2XXX_INI_MODE_DISABLED: 6595 vha->host->active_mode = MODE_UNKNOWN; 6596 break; 6597 case QLA2XXX_INI_MODE_EXCLUSIVE: 6598 vha->host->active_mode = MODE_INITIATOR; 6599 break; 6600 case QLA2XXX_INI_MODE_ENABLED: 6601 case QLA2XXX_INI_MODE_DUAL: 6602 vha->host->active_mode = MODE_INITIATOR; 6603 break; 6604 default: 6605 break; 6606 } 6607 } 6608 6609 /* 6610 * qla_tgt_enable_vha - NO LOCK HELD 6611 * 6612 * host_reset, bring up w/ Target Mode Enabled 6613 */ 6614 void 6615 qlt_enable_vha(struct scsi_qla_host *vha) 6616 { 6617 struct qla_hw_data *ha = vha->hw; 6618 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6619 unsigned long flags; 6620 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6621 6622 if (!tgt) { 6623 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6624 "Unable to locate qla_tgt pointer from" 6625 " struct qla_hw_data\n"); 6626 dump_stack(); 6627 return; 6628 } 6629 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6630 return; 6631 6632 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6633 ha->tgt.num_act_qpairs = ha->max_qpairs; 6634 spin_lock_irqsave(&ha->hardware_lock, flags); 6635 tgt->tgt_stopped = 0; 6636 qlt_set_mode(vha); 6637 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6638 6639 mutex_lock(&ha->optrom_mutex); 6640 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6641 "%s.\n", __func__); 6642 if (vha->vp_idx) { 6643 qla24xx_disable_vp(vha); 6644 qla24xx_enable_vp(vha); 6645 } else { 6646 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6647 qla2xxx_wake_dpc(base_vha); 6648 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6649 QLA_SUCCESS); 6650 } 6651 mutex_unlock(&ha->optrom_mutex); 6652 } 6653 EXPORT_SYMBOL(qlt_enable_vha); 6654 6655 /* 6656 * qla_tgt_disable_vha - NO LOCK HELD 6657 * 6658 * Disable Target Mode and reset the adapter 6659 */ 6660 static void qlt_disable_vha(struct scsi_qla_host *vha) 6661 { 6662 struct qla_hw_data *ha = vha->hw; 6663 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6664 unsigned long flags; 6665 6666 if (!tgt) { 6667 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6668 "Unable to locate qla_tgt pointer from" 6669 " struct qla_hw_data\n"); 6670 dump_stack(); 6671 return; 6672 } 6673 6674 spin_lock_irqsave(&ha->hardware_lock, flags); 6675 qlt_clear_mode(vha); 6676 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6677 6678 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6679 qla2xxx_wake_dpc(vha); 6680 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6681 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6682 "qla2x00_wait_for_hba_online() failed\n"); 6683 } 6684 6685 /* 6686 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6687 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6688 * members. 6689 */ 6690 void 6691 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6692 { 6693 vha->vha_tgt.qla_tgt = NULL; 6694 6695 mutex_init(&vha->vha_tgt.tgt_mutex); 6696 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6697 6698 qlt_clear_mode(vha); 6699 6700 /* 6701 * NOTE: Currently the value is kept the same for <24xx and 6702 * >=24xx ISPs. If it is necessary to change it, 6703 * the check should be added for specific ISPs, 6704 * assigning the value appropriately. 6705 */ 6706 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6707 6708 qlt_add_target(ha, vha); 6709 } 6710 6711 u8 6712 qlt_rff_id(struct scsi_qla_host *vha) 6713 { 6714 u8 fc4_feature = 0; 6715 /* 6716 * FC-4 Feature bit 0 indicates target functionality to the name server. 6717 */ 6718 if (qla_tgt_mode_enabled(vha)) { 6719 fc4_feature = BIT_0; 6720 } else if (qla_ini_mode_enabled(vha)) { 6721 fc4_feature = BIT_1; 6722 } else if (qla_dual_mode_enabled(vha)) 6723 fc4_feature = BIT_0 | BIT_1; 6724 6725 return fc4_feature; 6726 } 6727 6728 /* 6729 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6730 * @ha: HA context 6731 * 6732 * Beginning of ATIO ring has initialization control block already built 6733 * by nvram config routine. 6734 * 6735 * Returns 0 on success. 6736 */ 6737 void 6738 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6739 { 6740 struct qla_hw_data *ha = vha->hw; 6741 uint16_t cnt; 6742 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6743 6744 if (qla_ini_mode_enabled(vha)) 6745 return; 6746 6747 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6748 pkt->u.raw.signature = ATIO_PROCESSED; 6749 pkt++; 6750 } 6751 6752 } 6753 6754 /* 6755 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6756 * @ha: SCSI driver HA context 6757 */ 6758 void 6759 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6760 { 6761 struct qla_hw_data *ha = vha->hw; 6762 struct atio_from_isp *pkt; 6763 int cnt, i; 6764 6765 if (!ha->flags.fw_started) 6766 return; 6767 6768 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6769 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6770 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6771 cnt = pkt->u.raw.entry_count; 6772 6773 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6774 /* 6775 * This packet is corrupted. The header + payload 6776 * can not be trusted. There is no point in passing 6777 * it further up. 6778 */ 6779 ql_log(ql_log_warn, vha, 0xd03c, 6780 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6781 &pkt->u.isp24.fcp_hdr.s_id, 6782 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6783 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6784 6785 adjust_corrupted_atio(pkt); 6786 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6787 ha_locked, 0); 6788 } else { 6789 qlt_24xx_atio_pkt_all_vps(vha, 6790 (struct atio_from_isp *)pkt, ha_locked); 6791 } 6792 6793 for (i = 0; i < cnt; i++) { 6794 ha->tgt.atio_ring_index++; 6795 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6796 ha->tgt.atio_ring_index = 0; 6797 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6798 } else 6799 ha->tgt.atio_ring_ptr++; 6800 6801 pkt->u.raw.signature = ATIO_PROCESSED; 6802 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6803 } 6804 wmb(); 6805 } 6806 6807 /* Adjust ring index */ 6808 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6809 } 6810 6811 void 6812 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6813 { 6814 struct qla_hw_data *ha = vha->hw; 6815 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6816 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6817 6818 if (!QLA_TGT_MODE_ENABLED()) 6819 return; 6820 6821 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6822 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6823 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6824 6825 if (ha->flags.msix_enabled) { 6826 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6827 if (IS_QLA2071(ha)) { 6828 /* 4 ports Baker: Enable Interrupt Handshake */ 6829 icb->msix_atio = 0; 6830 icb->firmware_options_2 |= BIT_26; 6831 } else { 6832 icb->msix_atio = cpu_to_le16(msix->entry); 6833 icb->firmware_options_2 &= ~BIT_26; 6834 } 6835 ql_dbg(ql_dbg_init, vha, 0xf072, 6836 "Registering ICB vector 0x%x for atio que.\n", 6837 msix->entry); 6838 } 6839 } else { 6840 /* INTx|MSI */ 6841 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6842 icb->msix_atio = 0; 6843 icb->firmware_options_2 |= BIT_26; 6844 ql_dbg(ql_dbg_init, vha, 0xf072, 6845 "%s: Use INTx for ATIOQ.\n", __func__); 6846 } 6847 } 6848 } 6849 6850 void 6851 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6852 { 6853 struct qla_hw_data *ha = vha->hw; 6854 u32 tmp; 6855 6856 if (!QLA_TGT_MODE_ENABLED()) 6857 return; 6858 6859 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6860 if (!ha->tgt.saved_set) { 6861 /* We save only once */ 6862 ha->tgt.saved_exchange_count = nv->exchange_count; 6863 ha->tgt.saved_firmware_options_1 = 6864 nv->firmware_options_1; 6865 ha->tgt.saved_firmware_options_2 = 6866 nv->firmware_options_2; 6867 ha->tgt.saved_firmware_options_3 = 6868 nv->firmware_options_3; 6869 ha->tgt.saved_set = 1; 6870 } 6871 6872 if (qla_tgt_mode_enabled(vha)) 6873 nv->exchange_count = cpu_to_le16(0xFFFF); 6874 else /* dual */ 6875 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6876 6877 /* Enable target mode */ 6878 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6879 6880 /* Disable ini mode, if requested */ 6881 if (qla_tgt_mode_enabled(vha)) 6882 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6883 6884 /* Disable Full Login after LIP */ 6885 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6886 /* Enable initial LIP */ 6887 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6888 if (ql2xtgt_tape_enable) 6889 /* Enable FC Tape support */ 6890 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6891 else 6892 /* Disable FC Tape support */ 6893 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6894 6895 /* Disable Full Login after LIP */ 6896 nv->host_p &= cpu_to_le32(~BIT_10); 6897 6898 /* 6899 * clear BIT 15 explicitly as we have seen at least 6900 * a couple of instances where this was set and this 6901 * was causing the firmware to not be initialized. 6902 */ 6903 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6904 /* Enable target PRLI control */ 6905 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6906 6907 if (IS_QLA25XX(ha)) { 6908 /* Change Loop-prefer to Pt-Pt */ 6909 tmp = ~(BIT_4|BIT_5|BIT_6); 6910 nv->firmware_options_2 &= cpu_to_le32(tmp); 6911 tmp = P2P << 4; 6912 nv->firmware_options_2 |= cpu_to_le32(tmp); 6913 } 6914 } else { 6915 if (ha->tgt.saved_set) { 6916 nv->exchange_count = ha->tgt.saved_exchange_count; 6917 nv->firmware_options_1 = 6918 ha->tgt.saved_firmware_options_1; 6919 nv->firmware_options_2 = 6920 ha->tgt.saved_firmware_options_2; 6921 nv->firmware_options_3 = 6922 ha->tgt.saved_firmware_options_3; 6923 } 6924 return; 6925 } 6926 6927 if (ha->base_qpair->enable_class_2) { 6928 if (vha->flags.init_done) 6929 fc_host_supported_classes(vha->host) = 6930 FC_COS_CLASS2 | FC_COS_CLASS3; 6931 6932 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6933 } else { 6934 if (vha->flags.init_done) 6935 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6936 6937 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6938 } 6939 } 6940 6941 void 6942 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6943 struct init_cb_24xx *icb) 6944 { 6945 struct qla_hw_data *ha = vha->hw; 6946 6947 if (!QLA_TGT_MODE_ENABLED()) 6948 return; 6949 6950 if (ha->tgt.node_name_set) { 6951 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6952 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6953 } 6954 } 6955 6956 void 6957 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6958 { 6959 struct qla_hw_data *ha = vha->hw; 6960 u32 tmp; 6961 6962 if (!QLA_TGT_MODE_ENABLED()) 6963 return; 6964 6965 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6966 if (!ha->tgt.saved_set) { 6967 /* We save only once */ 6968 ha->tgt.saved_exchange_count = nv->exchange_count; 6969 ha->tgt.saved_firmware_options_1 = 6970 nv->firmware_options_1; 6971 ha->tgt.saved_firmware_options_2 = 6972 nv->firmware_options_2; 6973 ha->tgt.saved_firmware_options_3 = 6974 nv->firmware_options_3; 6975 ha->tgt.saved_set = 1; 6976 } 6977 6978 if (qla_tgt_mode_enabled(vha)) 6979 nv->exchange_count = cpu_to_le16(0xFFFF); 6980 else /* dual */ 6981 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6982 6983 /* Enable target mode */ 6984 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6985 6986 /* Disable ini mode, if requested */ 6987 if (qla_tgt_mode_enabled(vha)) 6988 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6989 /* Disable Full Login after LIP */ 6990 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6991 /* Enable initial LIP */ 6992 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6993 /* 6994 * clear BIT 15 explicitly as we have seen at 6995 * least a couple of instances where this was set 6996 * and this was causing the firmware to not be 6997 * initialized. 6998 */ 6999 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7000 if (ql2xtgt_tape_enable) 7001 /* Enable FC tape support */ 7002 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7003 else 7004 /* Disable FC tape support */ 7005 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7006 7007 /* Disable Full Login after LIP */ 7008 nv->host_p &= cpu_to_le32(~BIT_10); 7009 /* Enable target PRLI control */ 7010 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7011 7012 /* Change Loop-prefer to Pt-Pt */ 7013 tmp = ~(BIT_4|BIT_5|BIT_6); 7014 nv->firmware_options_2 &= cpu_to_le32(tmp); 7015 tmp = P2P << 4; 7016 nv->firmware_options_2 |= cpu_to_le32(tmp); 7017 } else { 7018 if (ha->tgt.saved_set) { 7019 nv->exchange_count = ha->tgt.saved_exchange_count; 7020 nv->firmware_options_1 = 7021 ha->tgt.saved_firmware_options_1; 7022 nv->firmware_options_2 = 7023 ha->tgt.saved_firmware_options_2; 7024 nv->firmware_options_3 = 7025 ha->tgt.saved_firmware_options_3; 7026 } 7027 return; 7028 } 7029 7030 if (ha->base_qpair->enable_class_2) { 7031 if (vha->flags.init_done) 7032 fc_host_supported_classes(vha->host) = 7033 FC_COS_CLASS2 | FC_COS_CLASS3; 7034 7035 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7036 } else { 7037 if (vha->flags.init_done) 7038 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7039 7040 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7041 } 7042 } 7043 7044 void 7045 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7046 struct init_cb_81xx *icb) 7047 { 7048 struct qla_hw_data *ha = vha->hw; 7049 7050 if (!QLA_TGT_MODE_ENABLED()) 7051 return; 7052 7053 if (ha->tgt.node_name_set) { 7054 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7055 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7056 } 7057 } 7058 7059 void 7060 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7061 { 7062 if (!QLA_TGT_MODE_ENABLED()) 7063 return; 7064 7065 ha->msix_count += 1; /* For ATIO Q */ 7066 } 7067 7068 7069 void 7070 qlt_modify_vp_config(struct scsi_qla_host *vha, 7071 struct vp_config_entry_24xx *vpmod) 7072 { 7073 /* enable target mode. Bit5 = 1 => disable */ 7074 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7075 vpmod->options_idx1 &= ~BIT_5; 7076 7077 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7078 if (qla_tgt_mode_enabled(vha)) 7079 vpmod->options_idx1 &= ~BIT_4; 7080 } 7081 7082 void 7083 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7084 { 7085 int rc; 7086 7087 if (!QLA_TGT_MODE_ENABLED()) 7088 return; 7089 7090 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7091 IS_QLA28XX(ha)) { 7092 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7093 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7094 } else { 7095 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7096 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7097 } 7098 7099 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7100 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7101 7102 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7103 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7104 qlt_unknown_atio_work_fn); 7105 7106 qlt_clear_mode(base_vha); 7107 7108 rc = btree_init32(&ha->tgt.host_map); 7109 if (rc) 7110 ql_log(ql_log_info, base_vha, 0xd03d, 7111 "Unable to initialize ha->host_map btree\n"); 7112 7113 qlt_update_vp_map(base_vha, SET_VP_IDX); 7114 } 7115 7116 irqreturn_t 7117 qla83xx_msix_atio_q(int irq, void *dev_id) 7118 { 7119 struct rsp_que *rsp; 7120 scsi_qla_host_t *vha; 7121 struct qla_hw_data *ha; 7122 unsigned long flags; 7123 7124 rsp = (struct rsp_que *) dev_id; 7125 ha = rsp->hw; 7126 vha = pci_get_drvdata(ha->pdev); 7127 7128 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7129 7130 qlt_24xx_process_atio_queue(vha, 0); 7131 7132 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7133 7134 return IRQ_HANDLED; 7135 } 7136 7137 static void 7138 qlt_handle_abts_recv_work(struct work_struct *work) 7139 { 7140 struct qla_tgt_sess_op *op = container_of(work, 7141 struct qla_tgt_sess_op, work); 7142 scsi_qla_host_t *vha = op->vha; 7143 struct qla_hw_data *ha = vha->hw; 7144 unsigned long flags; 7145 7146 if (qla2x00_reset_active(vha) || 7147 (op->chip_reset != ha->base_qpair->chip_reset)) 7148 return; 7149 7150 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7151 qlt_24xx_process_atio_queue(vha, 0); 7152 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7153 7154 spin_lock_irqsave(&ha->hardware_lock, flags); 7155 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7156 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7157 7158 kfree(op); 7159 } 7160 7161 void 7162 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7163 response_t *pkt) 7164 { 7165 struct qla_tgt_sess_op *op; 7166 7167 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7168 7169 if (!op) { 7170 /* do not reach for ATIO queue here. This is best effort err 7171 * recovery at this point. 7172 */ 7173 qlt_response_pkt_all_vps(vha, rsp, pkt); 7174 return; 7175 } 7176 7177 memcpy(&op->atio, pkt, sizeof(*pkt)); 7178 op->vha = vha; 7179 op->chip_reset = vha->hw->base_qpair->chip_reset; 7180 op->rsp = rsp; 7181 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7182 queue_work(qla_tgt_wq, &op->work); 7183 return; 7184 } 7185 7186 int 7187 qlt_mem_alloc(struct qla_hw_data *ha) 7188 { 7189 if (!QLA_TGT_MODE_ENABLED()) 7190 return 0; 7191 7192 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7193 sizeof(struct qla_tgt_vp_map), 7194 GFP_KERNEL); 7195 if (!ha->tgt.tgt_vp_map) 7196 return -ENOMEM; 7197 7198 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7199 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7200 &ha->tgt.atio_dma, GFP_KERNEL); 7201 if (!ha->tgt.atio_ring) { 7202 kfree(ha->tgt.tgt_vp_map); 7203 return -ENOMEM; 7204 } 7205 return 0; 7206 } 7207 7208 void 7209 qlt_mem_free(struct qla_hw_data *ha) 7210 { 7211 if (!QLA_TGT_MODE_ENABLED()) 7212 return; 7213 7214 if (ha->tgt.atio_ring) { 7215 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7216 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7217 ha->tgt.atio_dma); 7218 } 7219 ha->tgt.atio_ring = NULL; 7220 ha->tgt.atio_dma = 0; 7221 kfree(ha->tgt.tgt_vp_map); 7222 ha->tgt.tgt_vp_map = NULL; 7223 } 7224 7225 /* vport_slock to be held by the caller */ 7226 void 7227 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7228 { 7229 void *slot; 7230 u32 key; 7231 int rc; 7232 7233 if (!QLA_TGT_MODE_ENABLED()) 7234 return; 7235 7236 key = vha->d_id.b24; 7237 7238 switch (cmd) { 7239 case SET_VP_IDX: 7240 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7241 break; 7242 case SET_AL_PA: 7243 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7244 if (!slot) { 7245 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7246 "Save vha in host_map %p %06x\n", vha, key); 7247 rc = btree_insert32(&vha->hw->tgt.host_map, 7248 key, vha, GFP_ATOMIC); 7249 if (rc) 7250 ql_log(ql_log_info, vha, 0xd03e, 7251 "Unable to insert s_id into host_map: %06x\n", 7252 key); 7253 return; 7254 } 7255 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7256 "replace existing vha in host_map %p %06x\n", vha, key); 7257 btree_update32(&vha->hw->tgt.host_map, key, vha); 7258 break; 7259 case RESET_VP_IDX: 7260 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7261 break; 7262 case RESET_AL_PA: 7263 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7264 "clear vha in host_map %p %06x\n", vha, key); 7265 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7266 if (slot) 7267 btree_remove32(&vha->hw->tgt.host_map, key); 7268 vha->d_id.b24 = 0; 7269 break; 7270 } 7271 } 7272 7273 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7274 { 7275 7276 if (!vha->d_id.b24) { 7277 vha->d_id = id; 7278 qlt_update_vp_map(vha, SET_AL_PA); 7279 } else if (vha->d_id.b24 != id.b24) { 7280 qlt_update_vp_map(vha, RESET_AL_PA); 7281 vha->d_id = id; 7282 qlt_update_vp_map(vha, SET_AL_PA); 7283 } 7284 } 7285 7286 static int __init qlt_parse_ini_mode(void) 7287 { 7288 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7289 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7290 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7291 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7292 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7293 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7294 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7295 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7296 else 7297 return false; 7298 7299 return true; 7300 } 7301 7302 int __init qlt_init(void) 7303 { 7304 int ret; 7305 7306 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7307 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7308 7309 if (!qlt_parse_ini_mode()) { 7310 ql_log(ql_log_fatal, NULL, 0xe06b, 7311 "qlt_parse_ini_mode() failed\n"); 7312 return -EINVAL; 7313 } 7314 7315 if (!QLA_TGT_MODE_ENABLED()) 7316 return 0; 7317 7318 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7319 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7320 qla_tgt_mgmt_cmd), 0, NULL); 7321 if (!qla_tgt_mgmt_cmd_cachep) { 7322 ql_log(ql_log_fatal, NULL, 0xd04b, 7323 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7324 return -ENOMEM; 7325 } 7326 7327 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7328 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7329 0, NULL); 7330 7331 if (!qla_tgt_plogi_cachep) { 7332 ql_log(ql_log_fatal, NULL, 0xe06d, 7333 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7334 ret = -ENOMEM; 7335 goto out_mgmt_cmd_cachep; 7336 } 7337 7338 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7339 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7340 if (!qla_tgt_mgmt_cmd_mempool) { 7341 ql_log(ql_log_fatal, NULL, 0xe06e, 7342 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7343 ret = -ENOMEM; 7344 goto out_plogi_cachep; 7345 } 7346 7347 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7348 if (!qla_tgt_wq) { 7349 ql_log(ql_log_fatal, NULL, 0xe06f, 7350 "alloc_workqueue for qla_tgt_wq failed\n"); 7351 ret = -ENOMEM; 7352 goto out_cmd_mempool; 7353 } 7354 /* 7355 * Return 1 to signal that initiator-mode is being disabled 7356 */ 7357 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7358 7359 out_cmd_mempool: 7360 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7361 out_plogi_cachep: 7362 kmem_cache_destroy(qla_tgt_plogi_cachep); 7363 out_mgmt_cmd_cachep: 7364 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7365 return ret; 7366 } 7367 7368 void qlt_exit(void) 7369 { 7370 if (!QLA_TGT_MODE_ENABLED()) 7371 return; 7372 7373 destroy_workqueue(qla_tgt_wq); 7374 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7375 kmem_cache_destroy(qla_tgt_plogi_cachep); 7376 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7377 } 7378