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 sp->fcport->disc_state = DSC_LOGIN_COMPLETE; 600 sp->fcport->deleted = 0; 601 sp->fcport->logout_on_delete = 1; 602 } 603 break; 604 605 case SRB_NACK_LOGO: 606 sp->fcport->login_gen++; 607 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 608 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 609 break; 610 } 611 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 612 613 sp->free(sp); 614 } 615 616 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 617 struct imm_ntfy_from_isp *ntfy, int type) 618 { 619 int rval = QLA_FUNCTION_FAILED; 620 srb_t *sp; 621 char *c = NULL; 622 623 fcport->flags |= FCF_ASYNC_SENT; 624 switch (type) { 625 case SRB_NACK_PLOGI: 626 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 627 c = "PLOGI"; 628 break; 629 case SRB_NACK_PRLI: 630 fcport->fw_login_state = DSC_LS_PRLI_PEND; 631 fcport->deleted = 0; 632 c = "PRLI"; 633 break; 634 case SRB_NACK_LOGO: 635 fcport->fw_login_state = DSC_LS_LOGO_PEND; 636 c = "LOGO"; 637 break; 638 } 639 640 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 641 if (!sp) 642 goto done; 643 644 sp->type = type; 645 sp->name = "nack"; 646 647 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 648 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 649 650 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 651 sp->done = qla2x00_async_nack_sp_done; 652 653 ql_dbg(ql_dbg_disc, vha, 0x20f4, 654 "Async-%s %8phC hndl %x %s\n", 655 sp->name, fcport->port_name, sp->handle, c); 656 657 rval = qla2x00_start_sp(sp); 658 if (rval != QLA_SUCCESS) 659 goto done_free_sp; 660 661 return rval; 662 663 done_free_sp: 664 sp->free(sp); 665 done: 666 fcport->flags &= ~FCF_ASYNC_SENT; 667 return rval; 668 } 669 670 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 671 { 672 fc_port_t *t; 673 674 switch (e->u.nack.type) { 675 case SRB_NACK_PRLI: 676 t = e->u.nack.fcport; 677 flush_work(&t->del_work); 678 flush_work(&t->free_work); 679 mutex_lock(&vha->vha_tgt.tgt_mutex); 680 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 681 mutex_unlock(&vha->vha_tgt.tgt_mutex); 682 if (t) { 683 ql_log(ql_log_info, vha, 0xd034, 684 "%s create sess success %p", __func__, t); 685 /* create sess has an extra kref */ 686 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 687 } 688 break; 689 } 690 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 691 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 692 } 693 694 void qla24xx_delete_sess_fn(struct work_struct *work) 695 { 696 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 697 struct qla_hw_data *ha = fcport->vha->hw; 698 699 if (fcport->se_sess) { 700 ha->tgt.tgt_ops->shutdown_sess(fcport); 701 ha->tgt.tgt_ops->put_sess(fcport); 702 } else { 703 qlt_unreg_sess(fcport); 704 } 705 } 706 707 /* 708 * Called from qla2x00_reg_remote_port() 709 */ 710 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 711 { 712 struct qla_hw_data *ha = vha->hw; 713 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 714 struct fc_port *sess = fcport; 715 unsigned long flags; 716 717 if (!vha->hw->tgt.tgt_ops) 718 return; 719 720 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 721 if (tgt->tgt_stop) { 722 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 723 return; 724 } 725 726 if (fcport->disc_state == DSC_DELETE_PEND) { 727 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 728 return; 729 } 730 731 if (!sess->se_sess) { 732 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 733 734 mutex_lock(&vha->vha_tgt.tgt_mutex); 735 sess = qlt_create_sess(vha, fcport, false); 736 mutex_unlock(&vha->vha_tgt.tgt_mutex); 737 738 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 739 } else { 740 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 742 return; 743 } 744 745 if (!kref_get_unless_zero(&sess->sess_kref)) { 746 ql_dbg(ql_dbg_disc, vha, 0x2107, 747 "%s: kref_get fail sess %8phC \n", 748 __func__, sess->port_name); 749 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 750 return; 751 } 752 753 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 754 "qla_target(%u): %ssession for port %8phC " 755 "(loop ID %d) reappeared\n", vha->vp_idx, 756 sess->local ? "local " : "", sess->port_name, sess->loop_id); 757 758 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 759 "Reappeared sess %p\n", sess); 760 761 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 762 fcport->loop_id, 763 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 764 } 765 766 if (sess && sess->local) { 767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 768 "qla_target(%u): local session for " 769 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 770 fcport->port_name, sess->loop_id); 771 sess->local = 0; 772 } 773 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 774 775 ha->tgt.tgt_ops->put_sess(sess); 776 } 777 778 /* 779 * This is a zero-base ref-counting solution, since hardware_lock 780 * guarantees that ref_count is not modified concurrently. 781 * Upon successful return content of iocb is undefined 782 */ 783 static struct qlt_plogi_ack_t * 784 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 785 struct imm_ntfy_from_isp *iocb) 786 { 787 struct qlt_plogi_ack_t *pla; 788 789 lockdep_assert_held(&vha->hw->hardware_lock); 790 791 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 792 if (pla->id.b24 == id->b24) { 793 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 794 "%s %d %8phC Term INOT due to new INOT", 795 __func__, __LINE__, 796 pla->iocb.u.isp24.port_name); 797 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 798 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 799 return pla; 800 } 801 } 802 803 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 804 if (!pla) { 805 ql_dbg(ql_dbg_async, vha, 0x5088, 806 "qla_target(%d): Allocation of plogi_ack failed\n", 807 vha->vp_idx); 808 return NULL; 809 } 810 811 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 812 pla->id = *id; 813 list_add_tail(&pla->list, &vha->plogi_ack_list); 814 815 return pla; 816 } 817 818 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 819 struct qlt_plogi_ack_t *pla) 820 { 821 struct imm_ntfy_from_isp *iocb = &pla->iocb; 822 port_id_t port_id; 823 uint16_t loop_id; 824 fc_port_t *fcport = pla->fcport; 825 826 BUG_ON(!pla->ref_count); 827 pla->ref_count--; 828 829 if (pla->ref_count) 830 return; 831 832 ql_dbg(ql_dbg_disc, vha, 0x5089, 833 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 834 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 835 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 836 iocb->u.isp24.port_id[0], 837 le16_to_cpu(iocb->u.isp24.nport_handle), 838 iocb->u.isp24.exchange_address, iocb->ox_id); 839 840 port_id.b.domain = iocb->u.isp24.port_id[2]; 841 port_id.b.area = iocb->u.isp24.port_id[1]; 842 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 843 port_id.b.rsvd_1 = 0; 844 845 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 846 847 fcport->loop_id = loop_id; 848 fcport->d_id = port_id; 849 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 850 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 851 else 852 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 853 854 list_for_each_entry(fcport, &vha->vp_fcports, list) { 855 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 856 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 857 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 858 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 859 } 860 861 list_del(&pla->list); 862 kmem_cache_free(qla_tgt_plogi_cachep, pla); 863 } 864 865 void 866 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 867 struct fc_port *sess, enum qlt_plogi_link_t link) 868 { 869 struct imm_ntfy_from_isp *iocb = &pla->iocb; 870 /* Inc ref_count first because link might already be pointing at pla */ 871 pla->ref_count++; 872 873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 874 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 875 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 876 sess, link, sess->port_name, 877 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 878 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 879 pla->ref_count, pla, link); 880 881 if (link == QLT_PLOGI_LINK_CONFLICT) { 882 switch (sess->disc_state) { 883 case DSC_DELETED: 884 case DSC_DELETE_PEND: 885 pla->ref_count--; 886 return; 887 default: 888 break; 889 } 890 } 891 892 if (sess->plogi_link[link]) 893 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 894 895 if (link == QLT_PLOGI_LINK_SAME_WWN) 896 pla->fcport = sess; 897 898 sess->plogi_link[link] = pla; 899 } 900 901 typedef struct { 902 /* These fields must be initialized by the caller */ 903 port_id_t id; 904 /* 905 * number of cmds dropped while we were waiting for 906 * initiator to ack LOGO initialize to 1 if LOGO is 907 * triggered by a command, otherwise, to 0 908 */ 909 int cmd_count; 910 911 /* These fields are used by callee */ 912 struct list_head list; 913 } qlt_port_logo_t; 914 915 static void 916 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 917 { 918 qlt_port_logo_t *tmp; 919 int res; 920 921 mutex_lock(&vha->vha_tgt.tgt_mutex); 922 923 list_for_each_entry(tmp, &vha->logo_list, list) { 924 if (tmp->id.b24 == logo->id.b24) { 925 tmp->cmd_count += logo->cmd_count; 926 mutex_unlock(&vha->vha_tgt.tgt_mutex); 927 return; 928 } 929 } 930 931 list_add_tail(&logo->list, &vha->logo_list); 932 933 mutex_unlock(&vha->vha_tgt.tgt_mutex); 934 935 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 936 937 mutex_lock(&vha->vha_tgt.tgt_mutex); 938 list_del(&logo->list); 939 mutex_unlock(&vha->vha_tgt.tgt_mutex); 940 941 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 942 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 943 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 944 logo->cmd_count, res); 945 } 946 947 void qlt_free_session_done(struct work_struct *work) 948 { 949 struct fc_port *sess = container_of(work, struct fc_port, 950 free_work); 951 struct qla_tgt *tgt = sess->tgt; 952 struct scsi_qla_host *vha = sess->vha; 953 struct qla_hw_data *ha = vha->hw; 954 unsigned long flags; 955 bool logout_started = false; 956 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 957 struct qlt_plogi_ack_t *own = 958 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 959 960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 961 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 962 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 963 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 964 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 965 sess->logout_on_delete, sess->keep_nport_handle, 966 sess->send_els_logo); 967 968 if (!IS_SW_RESV_ADDR(sess->d_id)) { 969 qla2x00_mark_device_lost(vha, sess, 0, 0); 970 971 if (sess->send_els_logo) { 972 qlt_port_logo_t logo; 973 974 logo.id = sess->d_id; 975 logo.cmd_count = 0; 976 if (!own) 977 qlt_send_first_logo(vha, &logo); 978 sess->send_els_logo = 0; 979 } 980 981 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 982 int rc; 983 984 if (!own || 985 (own && 986 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 987 rc = qla2x00_post_async_logout_work(vha, sess, 988 NULL); 989 if (rc != QLA_SUCCESS) 990 ql_log(ql_log_warn, vha, 0xf085, 991 "Schedule logo failed sess %p rc %d\n", 992 sess, rc); 993 else 994 logout_started = true; 995 } else if (own && (own->iocb.u.isp24.status_subcode == 996 ELS_PRLI) && ha->flags.rida_fmt2) { 997 rc = qla2x00_post_async_prlo_work(vha, sess, 998 NULL); 999 if (rc != QLA_SUCCESS) 1000 ql_log(ql_log_warn, vha, 0xf085, 1001 "Schedule PRLO failed sess %p rc %d\n", 1002 sess, rc); 1003 else 1004 logout_started = true; 1005 } 1006 } /* if sess->logout_on_delete */ 1007 1008 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1009 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1010 sess->nvme_flag |= NVME_FLAG_DELETING; 1011 qla_nvme_unregister_remote_port(sess); 1012 } 1013 } 1014 1015 /* 1016 * Release the target session for FC Nexus from fabric module code. 1017 */ 1018 if (sess->se_sess != NULL) 1019 ha->tgt.tgt_ops->free_session(sess); 1020 1021 if (logout_started) { 1022 bool traced = false; 1023 u16 cnt = 0; 1024 1025 while (!READ_ONCE(sess->logout_completed)) { 1026 if (!traced) { 1027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 1028 "%s: waiting for sess %p logout\n", 1029 __func__, sess); 1030 traced = true; 1031 } 1032 msleep(100); 1033 cnt++; 1034 if (cnt > 200) 1035 break; 1036 } 1037 1038 ql_dbg(ql_dbg_disc, vha, 0xf087, 1039 "%s: sess %p logout completed\n", __func__, sess); 1040 } 1041 1042 if (sess->logo_ack_needed) { 1043 sess->logo_ack_needed = 0; 1044 qla24xx_async_notify_ack(vha, sess, 1045 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1046 } 1047 1048 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1049 if (sess->se_sess) { 1050 sess->se_sess = NULL; 1051 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1052 tgt->sess_count--; 1053 } 1054 1055 sess->disc_state = DSC_DELETED; 1056 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1057 sess->deleted = QLA_SESS_DELETED; 1058 1059 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1060 vha->fcport_count--; 1061 sess->login_succ = 0; 1062 } 1063 1064 qla2x00_clear_loop_id(sess); 1065 1066 if (sess->conflict) { 1067 sess->conflict->login_pause = 0; 1068 sess->conflict = NULL; 1069 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1070 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1071 } 1072 1073 { 1074 struct qlt_plogi_ack_t *con = 1075 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1076 struct imm_ntfy_from_isp *iocb; 1077 1078 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1079 1080 if (con) { 1081 iocb = &con->iocb; 1082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1083 "se_sess %p / sess %p port %8phC is gone," 1084 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1085 sess->se_sess, sess, sess->port_name, 1086 own ? "releasing own PLOGI" : "no own PLOGI pending", 1087 own ? own->ref_count : -1, 1088 iocb->u.isp24.port_name, con->ref_count); 1089 qlt_plogi_ack_unref(vha, con); 1090 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1091 } else { 1092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1093 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1094 sess->se_sess, sess, sess->port_name, 1095 own ? "releasing own PLOGI" : 1096 "no own PLOGI pending", 1097 own ? own->ref_count : -1); 1098 } 1099 1100 if (own) { 1101 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1102 qlt_plogi_ack_unref(vha, own); 1103 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1104 } 1105 } 1106 1107 sess->explicit_logout = 0; 1108 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1109 sess->free_pending = 0; 1110 1111 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1112 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1113 sess, sess->port_name, vha->fcport_count); 1114 1115 if (tgt && (tgt->sess_count == 0)) 1116 wake_up_all(&tgt->waitQ); 1117 1118 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1119 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1120 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1121 switch (vha->host->active_mode) { 1122 case MODE_INITIATOR: 1123 case MODE_DUAL: 1124 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1125 qla2xxx_wake_dpc(vha); 1126 break; 1127 case MODE_TARGET: 1128 default: 1129 /* no-op */ 1130 break; 1131 } 1132 } 1133 1134 if (vha->fcport_count == 0) 1135 wake_up_all(&vha->fcport_waitQ); 1136 } 1137 1138 /* ha->tgt.sess_lock supposed to be held on entry */ 1139 void qlt_unreg_sess(struct fc_port *sess) 1140 { 1141 struct scsi_qla_host *vha = sess->vha; 1142 unsigned long flags; 1143 1144 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1145 "%s sess %p for deletion %8phC\n", 1146 __func__, sess, sess->port_name); 1147 1148 spin_lock_irqsave(&sess->vha->work_lock, flags); 1149 if (sess->free_pending) { 1150 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1151 return; 1152 } 1153 sess->free_pending = 1; 1154 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1155 1156 if (sess->se_sess) 1157 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1158 1159 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1160 sess->disc_state = DSC_DELETE_PEND; 1161 sess->last_rscn_gen = sess->rscn_gen; 1162 sess->last_login_gen = sess->login_gen; 1163 1164 queue_work(sess->vha->hw->wq, &sess->free_work); 1165 } 1166 EXPORT_SYMBOL(qlt_unreg_sess); 1167 1168 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1169 { 1170 struct qla_hw_data *ha = vha->hw; 1171 struct fc_port *sess = NULL; 1172 uint16_t loop_id; 1173 int res = 0; 1174 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1175 unsigned long flags; 1176 1177 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1178 if (loop_id == 0xFFFF) { 1179 /* Global event */ 1180 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1181 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1182 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1183 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1184 } else { 1185 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1186 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1187 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1188 } 1189 1190 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1191 "Using sess for qla_tgt_reset: %p\n", sess); 1192 if (!sess) { 1193 res = -ESRCH; 1194 return res; 1195 } 1196 1197 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1198 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1199 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1200 mcmd, loop_id); 1201 1202 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1203 } 1204 1205 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1206 { 1207 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1208 sess->logout_on_delete = 0; 1209 sess->logo_ack_needed = 0; 1210 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1211 } 1212 } 1213 1214 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1215 { 1216 struct qla_tgt *tgt = sess->tgt; 1217 unsigned long flags; 1218 u16 sec; 1219 1220 switch (sess->disc_state) { 1221 case DSC_DELETE_PEND: 1222 return; 1223 case DSC_DELETED: 1224 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1225 wake_up_all(&tgt->waitQ); 1226 if (sess->vha->fcport_count == 0) 1227 wake_up_all(&sess->vha->fcport_waitQ); 1228 1229 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1230 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1231 return; 1232 break; 1233 case DSC_UPD_FCPORT: 1234 /* 1235 * This port is not done reporting to upper layer. 1236 * let it finish 1237 */ 1238 sess->next_disc_state = DSC_DELETE_PEND; 1239 sec = jiffies_to_msecs(jiffies - 1240 sess->jiffies_at_registration)/1000; 1241 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1242 sess->sec_since_registration = sec; 1243 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1244 "%s %8phC : Slow Rport registration(%d Sec)\n", 1245 __func__, sess->port_name, sec); 1246 } 1247 return; 1248 default: 1249 break; 1250 } 1251 1252 spin_lock_irqsave(&sess->vha->work_lock, flags); 1253 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1254 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1255 return; 1256 } 1257 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1258 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1259 1260 sess->disc_state = DSC_DELETE_PEND; 1261 1262 qla24xx_chk_fcp_state(sess); 1263 1264 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1265 "Scheduling sess %p for deletion %8phC\n", 1266 sess, sess->port_name); 1267 1268 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1269 } 1270 1271 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1272 { 1273 struct fc_port *sess; 1274 scsi_qla_host_t *vha = tgt->vha; 1275 1276 list_for_each_entry(sess, &vha->vp_fcports, list) { 1277 if (sess->se_sess) 1278 qlt_schedule_sess_for_deletion(sess); 1279 } 1280 1281 /* At this point tgt could be already dead */ 1282 } 1283 1284 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1285 uint16_t *loop_id) 1286 { 1287 struct qla_hw_data *ha = vha->hw; 1288 dma_addr_t gid_list_dma; 1289 struct gid_list_info *gid_list, *gid; 1290 int res, rc, i; 1291 uint16_t entries; 1292 1293 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1294 &gid_list_dma, GFP_KERNEL); 1295 if (!gid_list) { 1296 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1297 "qla_target(%d): DMA Alloc failed of %u\n", 1298 vha->vp_idx, qla2x00_gid_list_size(ha)); 1299 return -ENOMEM; 1300 } 1301 1302 /* Get list of logged in devices */ 1303 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1304 if (rc != QLA_SUCCESS) { 1305 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1306 "qla_target(%d): get_id_list() failed: %x\n", 1307 vha->vp_idx, rc); 1308 res = -EBUSY; 1309 goto out_free_id_list; 1310 } 1311 1312 gid = gid_list; 1313 res = -ENOENT; 1314 for (i = 0; i < entries; i++) { 1315 if (gid->al_pa == s_id.al_pa && 1316 gid->area == s_id.area && 1317 gid->domain == s_id.domain) { 1318 *loop_id = le16_to_cpu(gid->loop_id); 1319 res = 0; 1320 break; 1321 } 1322 gid = (void *)gid + ha->gid_list_info_size; 1323 } 1324 1325 out_free_id_list: 1326 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1327 gid_list, gid_list_dma); 1328 return res; 1329 } 1330 1331 /* 1332 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1333 * Caller must put it. 1334 */ 1335 static struct fc_port *qlt_create_sess( 1336 struct scsi_qla_host *vha, 1337 fc_port_t *fcport, 1338 bool local) 1339 { 1340 struct qla_hw_data *ha = vha->hw; 1341 struct fc_port *sess = fcport; 1342 unsigned long flags; 1343 1344 if (vha->vha_tgt.qla_tgt->tgt_stop) 1345 return NULL; 1346 1347 if (fcport->se_sess) { 1348 if (!kref_get_unless_zero(&sess->sess_kref)) { 1349 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1350 "%s: kref_get_unless_zero failed for %8phC\n", 1351 __func__, sess->port_name); 1352 return NULL; 1353 } 1354 return fcport; 1355 } 1356 sess->tgt = vha->vha_tgt.qla_tgt; 1357 sess->local = local; 1358 1359 /* 1360 * Under normal circumstances we want to logout from firmware when 1361 * session eventually ends and release corresponding nport handle. 1362 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1363 * code will adjust these flags as necessary. 1364 */ 1365 sess->logout_on_delete = 1; 1366 sess->keep_nport_handle = 0; 1367 sess->logout_completed = 0; 1368 1369 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1370 &fcport->port_name[0], sess) < 0) { 1371 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1372 "(%d) %8phC check_initiator_node_acl failed\n", 1373 vha->vp_idx, fcport->port_name); 1374 return NULL; 1375 } else { 1376 kref_init(&fcport->sess_kref); 1377 /* 1378 * Take an extra reference to ->sess_kref here to handle 1379 * fc_port access across ->tgt.sess_lock reaquire. 1380 */ 1381 if (!kref_get_unless_zero(&sess->sess_kref)) { 1382 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1383 "%s: kref_get_unless_zero failed for %8phC\n", 1384 __func__, sess->port_name); 1385 return NULL; 1386 } 1387 1388 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1389 if (!IS_SW_RESV_ADDR(sess->d_id)) 1390 vha->vha_tgt.qla_tgt->sess_count++; 1391 1392 qlt_do_generation_tick(vha, &sess->generation); 1393 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1394 } 1395 1396 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1397 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1398 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1399 vha->vha_tgt.qla_tgt->sess_count); 1400 1401 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1402 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1403 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1404 vha->vp_idx, local ? "local " : "", fcport->port_name, 1405 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1406 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1407 1408 return sess; 1409 } 1410 1411 /* 1412 * max_gen - specifies maximum session generation 1413 * at which this deletion requestion is still valid 1414 */ 1415 void 1416 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1417 { 1418 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1419 struct fc_port *sess = fcport; 1420 unsigned long flags; 1421 1422 if (!vha->hw->tgt.tgt_ops) 1423 return; 1424 1425 if (!tgt) 1426 return; 1427 1428 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1429 if (tgt->tgt_stop) { 1430 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1431 return; 1432 } 1433 if (!sess->se_sess) { 1434 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1435 return; 1436 } 1437 1438 if (max_gen - sess->generation < 0) { 1439 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1440 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1441 "Ignoring stale deletion request for se_sess %p / sess %p" 1442 " for port %8phC, req_gen %d, sess_gen %d\n", 1443 sess->se_sess, sess, sess->port_name, max_gen, 1444 sess->generation); 1445 return; 1446 } 1447 1448 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1449 1450 sess->local = 1; 1451 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1452 qlt_schedule_sess_for_deletion(sess); 1453 } 1454 1455 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1456 { 1457 struct qla_hw_data *ha = tgt->ha; 1458 unsigned long flags; 1459 int res; 1460 /* 1461 * We need to protect against race, when tgt is freed before or 1462 * inside wake_up() 1463 */ 1464 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1465 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1466 "tgt %p, sess_count=%d\n", 1467 tgt, tgt->sess_count); 1468 res = (tgt->sess_count == 0); 1469 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1470 1471 return res; 1472 } 1473 1474 /* Called by tcm_qla2xxx configfs code */ 1475 int qlt_stop_phase1(struct qla_tgt *tgt) 1476 { 1477 struct scsi_qla_host *vha = tgt->vha; 1478 struct qla_hw_data *ha = tgt->ha; 1479 unsigned long flags; 1480 1481 mutex_lock(&ha->optrom_mutex); 1482 mutex_lock(&qla_tgt_mutex); 1483 1484 if (tgt->tgt_stop || tgt->tgt_stopped) { 1485 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1486 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1487 mutex_unlock(&qla_tgt_mutex); 1488 mutex_unlock(&ha->optrom_mutex); 1489 return -EPERM; 1490 } 1491 1492 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1493 vha->host_no, vha); 1494 /* 1495 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1496 * Lock is needed, because we still can get an incoming packet. 1497 */ 1498 mutex_lock(&vha->vha_tgt.tgt_mutex); 1499 tgt->tgt_stop = 1; 1500 qlt_clear_tgt_db(tgt); 1501 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1502 mutex_unlock(&qla_tgt_mutex); 1503 1504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1505 "Waiting for sess works (tgt %p)", tgt); 1506 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1507 while (!list_empty(&tgt->sess_works_list)) { 1508 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1509 flush_scheduled_work(); 1510 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1511 } 1512 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1513 1514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1515 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1516 1517 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1518 1519 /* Big hammer */ 1520 if (!ha->flags.host_shutting_down && 1521 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1522 qlt_disable_vha(vha); 1523 1524 /* Wait for sessions to clear out (just in case) */ 1525 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1526 mutex_unlock(&ha->optrom_mutex); 1527 1528 return 0; 1529 } 1530 EXPORT_SYMBOL(qlt_stop_phase1); 1531 1532 /* Called by tcm_qla2xxx configfs code */ 1533 void qlt_stop_phase2(struct qla_tgt *tgt) 1534 { 1535 scsi_qla_host_t *vha = tgt->vha; 1536 1537 if (tgt->tgt_stopped) { 1538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1539 "Already in tgt->tgt_stopped state\n"); 1540 dump_stack(); 1541 return; 1542 } 1543 if (!tgt->tgt_stop) { 1544 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1545 "%s: phase1 stop is not completed\n", __func__); 1546 dump_stack(); 1547 return; 1548 } 1549 1550 mutex_lock(&vha->vha_tgt.tgt_mutex); 1551 tgt->tgt_stop = 0; 1552 tgt->tgt_stopped = 1; 1553 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1554 1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1556 tgt); 1557 1558 switch (vha->qlini_mode) { 1559 case QLA2XXX_INI_MODE_EXCLUSIVE: 1560 vha->flags.online = 1; 1561 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1562 break; 1563 default: 1564 break; 1565 } 1566 } 1567 EXPORT_SYMBOL(qlt_stop_phase2); 1568 1569 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1570 static void qlt_release(struct qla_tgt *tgt) 1571 { 1572 scsi_qla_host_t *vha = tgt->vha; 1573 void *node; 1574 u64 key = 0; 1575 u16 i; 1576 struct qla_qpair_hint *h; 1577 struct qla_hw_data *ha = vha->hw; 1578 1579 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1580 qlt_stop_phase1(tgt); 1581 1582 if (!tgt->tgt_stopped) 1583 qlt_stop_phase2(tgt); 1584 1585 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1586 unsigned long flags; 1587 1588 h = &tgt->qphints[i]; 1589 if (h->qpair) { 1590 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1591 list_del(&h->hint_elem); 1592 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1593 h->qpair = NULL; 1594 } 1595 } 1596 kfree(tgt->qphints); 1597 mutex_lock(&qla_tgt_mutex); 1598 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1599 mutex_unlock(&qla_tgt_mutex); 1600 1601 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1602 btree_remove64(&tgt->lun_qpair_map, key); 1603 1604 btree_destroy64(&tgt->lun_qpair_map); 1605 1606 if (vha->vp_idx) 1607 if (ha->tgt.tgt_ops && 1608 ha->tgt.tgt_ops->remove_target && 1609 vha->vha_tgt.target_lport_ptr) 1610 ha->tgt.tgt_ops->remove_target(vha); 1611 1612 vha->vha_tgt.qla_tgt = NULL; 1613 1614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1615 "Release of tgt %p finished\n", tgt); 1616 1617 kfree(tgt); 1618 } 1619 1620 /* ha->hardware_lock supposed to be held on entry */ 1621 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1622 const void *param, unsigned int param_size) 1623 { 1624 struct qla_tgt_sess_work_param *prm; 1625 unsigned long flags; 1626 1627 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1628 if (!prm) { 1629 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1630 "qla_target(%d): Unable to create session " 1631 "work, command will be refused", 0); 1632 return -ENOMEM; 1633 } 1634 1635 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1636 "Scheduling work (type %d, prm %p)" 1637 " to find session for param %p (size %d, tgt %p)\n", 1638 type, prm, param, param_size, tgt); 1639 1640 prm->type = type; 1641 memcpy(&prm->tm_iocb, param, param_size); 1642 1643 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1644 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1645 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1646 1647 schedule_work(&tgt->sess_work); 1648 1649 return 0; 1650 } 1651 1652 /* 1653 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1654 */ 1655 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1656 struct imm_ntfy_from_isp *ntfy, 1657 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1658 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1659 { 1660 struct scsi_qla_host *vha = qpair->vha; 1661 struct qla_hw_data *ha = vha->hw; 1662 request_t *pkt; 1663 struct nack_to_isp *nack; 1664 1665 if (!ha->flags.fw_started) 1666 return; 1667 1668 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1669 1670 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1671 if (!pkt) { 1672 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1673 "qla_target(%d): %s failed: unable to allocate " 1674 "request packet\n", vha->vp_idx, __func__); 1675 return; 1676 } 1677 1678 if (vha->vha_tgt.qla_tgt != NULL) 1679 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1680 1681 pkt->entry_type = NOTIFY_ACK_TYPE; 1682 pkt->entry_count = 1; 1683 1684 nack = (struct nack_to_isp *)pkt; 1685 nack->ox_id = ntfy->ox_id; 1686 1687 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1688 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1689 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1690 nack->u.isp24.flags = ntfy->u.isp24.flags & 1691 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1692 } 1693 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1694 nack->u.isp24.status = ntfy->u.isp24.status; 1695 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1696 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1697 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1698 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1699 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1700 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1701 nack->u.isp24.srr_reject_code = srr_reject_code; 1702 nack->u.isp24.srr_reject_code_expl = srr_explan; 1703 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1704 1705 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1706 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1707 vha->vp_idx, nack->u.isp24.status); 1708 1709 /* Memory Barrier */ 1710 wmb(); 1711 qla2x00_start_iocbs(vha, qpair->req); 1712 } 1713 1714 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1715 { 1716 struct scsi_qla_host *vha = mcmd->vha; 1717 struct qla_hw_data *ha = vha->hw; 1718 struct abts_resp_to_24xx *resp; 1719 uint32_t f_ctl, h; 1720 uint8_t *p; 1721 int rc; 1722 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1723 struct qla_qpair *qpair = mcmd->qpair; 1724 1725 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1726 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1727 ha, mcmd->fc_tm_rsp); 1728 1729 rc = qlt_check_reserve_free_req(qpair, 1); 1730 if (rc) { 1731 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1732 "qla_target(%d): %s failed: unable to allocate request packet\n", 1733 vha->vp_idx, __func__); 1734 return -EAGAIN; 1735 } 1736 1737 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1738 memset(resp, 0, sizeof(*resp)); 1739 1740 h = qlt_make_handle(qpair); 1741 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1742 /* 1743 * CTIO type 7 from the firmware doesn't provide a way to 1744 * know the initiator's LOOP ID, hence we can't find 1745 * the session and, so, the command. 1746 */ 1747 return -EAGAIN; 1748 } else { 1749 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1750 } 1751 1752 resp->handle = MAKE_HANDLE(qpair->req->id, h); 1753 resp->entry_type = ABTS_RESP_24XX; 1754 resp->entry_count = 1; 1755 resp->nport_handle = abts->nport_handle; 1756 resp->vp_index = vha->vp_idx; 1757 resp->sof_type = abts->sof_type; 1758 resp->exchange_address = abts->exchange_address; 1759 resp->fcp_hdr_le = abts->fcp_hdr_le; 1760 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1761 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1762 F_CTL_SEQ_INITIATIVE); 1763 p = (uint8_t *)&f_ctl; 1764 resp->fcp_hdr_le.f_ctl[0] = *p++; 1765 resp->fcp_hdr_le.f_ctl[1] = *p++; 1766 resp->fcp_hdr_le.f_ctl[2] = *p; 1767 1768 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1769 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1770 1771 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1772 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1773 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1774 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1775 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1776 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1777 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1778 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1779 } else { 1780 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1781 resp->payload.ba_rjt.reason_code = 1782 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1783 /* Other bytes are zero */ 1784 } 1785 1786 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1787 1788 /* Memory Barrier */ 1789 wmb(); 1790 if (qpair->reqq_start_iocbs) 1791 qpair->reqq_start_iocbs(qpair); 1792 else 1793 qla2x00_start_iocbs(vha, qpair->req); 1794 1795 return rc; 1796 } 1797 1798 /* 1799 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1800 */ 1801 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1802 struct abts_recv_from_24xx *abts, uint32_t status, 1803 bool ids_reversed) 1804 { 1805 struct scsi_qla_host *vha = qpair->vha; 1806 struct qla_hw_data *ha = vha->hw; 1807 struct abts_resp_to_24xx *resp; 1808 uint32_t f_ctl; 1809 uint8_t *p; 1810 1811 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1812 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1813 ha, abts, status); 1814 1815 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1816 NULL); 1817 if (!resp) { 1818 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1819 "qla_target(%d): %s failed: unable to allocate " 1820 "request packet", vha->vp_idx, __func__); 1821 return; 1822 } 1823 1824 resp->entry_type = ABTS_RESP_24XX; 1825 resp->handle = QLA_TGT_SKIP_HANDLE; 1826 resp->entry_count = 1; 1827 resp->nport_handle = abts->nport_handle; 1828 resp->vp_index = vha->vp_idx; 1829 resp->sof_type = abts->sof_type; 1830 resp->exchange_address = abts->exchange_address; 1831 resp->fcp_hdr_le = abts->fcp_hdr_le; 1832 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1833 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1834 F_CTL_SEQ_INITIATIVE); 1835 p = (uint8_t *)&f_ctl; 1836 resp->fcp_hdr_le.f_ctl[0] = *p++; 1837 resp->fcp_hdr_le.f_ctl[1] = *p++; 1838 resp->fcp_hdr_le.f_ctl[2] = *p; 1839 if (ids_reversed) { 1840 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1841 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1842 } else { 1843 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1844 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1845 } 1846 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1847 if (status == FCP_TMF_CMPL) { 1848 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1849 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1850 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1851 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1852 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1853 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1854 } else { 1855 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1856 resp->payload.ba_rjt.reason_code = 1857 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1858 /* Other bytes are zero */ 1859 } 1860 1861 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1862 1863 /* Memory Barrier */ 1864 wmb(); 1865 if (qpair->reqq_start_iocbs) 1866 qpair->reqq_start_iocbs(qpair); 1867 else 1868 qla2x00_start_iocbs(vha, qpair->req); 1869 } 1870 1871 /* 1872 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1873 */ 1874 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1875 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1876 { 1877 struct ctio7_to_24xx *ctio; 1878 u16 tmp; 1879 struct abts_recv_from_24xx *entry; 1880 1881 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1882 if (ctio == NULL) { 1883 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1884 "qla_target(%d): %s failed: unable to allocate " 1885 "request packet\n", vha->vp_idx, __func__); 1886 return; 1887 } 1888 1889 if (mcmd) 1890 /* abts from remote port */ 1891 entry = &mcmd->orig_iocb.abts; 1892 else 1893 /* abts from this driver. */ 1894 entry = (struct abts_recv_from_24xx *)pkt; 1895 1896 /* 1897 * We've got on entrance firmware's response on by us generated 1898 * ABTS response. So, in it ID fields are reversed. 1899 */ 1900 1901 ctio->entry_type = CTIO_TYPE7; 1902 ctio->entry_count = 1; 1903 ctio->nport_handle = entry->nport_handle; 1904 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1905 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1906 ctio->vp_index = vha->vp_idx; 1907 ctio->exchange_addr = entry->exchange_addr_to_abort; 1908 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1909 1910 if (mcmd) { 1911 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1912 1913 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1914 tmp |= (mcmd->abort_io_attr << 9); 1915 else if (qpair->retry_term_cnt & 1) 1916 tmp |= (0x4 << 9); 1917 } else { 1918 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1919 1920 if (qpair->retry_term_cnt & 1) 1921 tmp |= (0x4 << 9); 1922 } 1923 ctio->u.status1.flags = cpu_to_le16(tmp); 1924 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1925 1926 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1927 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1928 le16_to_cpu(ctio->u.status1.flags), 1929 le16_to_cpu(ctio->u.status1.ox_id), 1930 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1931 1932 /* Memory Barrier */ 1933 wmb(); 1934 if (qpair->reqq_start_iocbs) 1935 qpair->reqq_start_iocbs(qpair); 1936 else 1937 qla2x00_start_iocbs(vha, qpair->req); 1938 1939 if (mcmd) 1940 qlt_build_abts_resp_iocb(mcmd); 1941 else 1942 qlt_24xx_send_abts_resp(qpair, 1943 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1944 1945 } 1946 1947 /* drop cmds for the given lun 1948 * XXX only looks for cmds on the port through which lun reset was recieved 1949 * XXX does not go through the list of other port (which may have cmds 1950 * for the same lun) 1951 */ 1952 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1953 { 1954 struct qla_tgt_sess_op *op; 1955 struct qla_tgt_cmd *cmd; 1956 uint32_t key; 1957 unsigned long flags; 1958 1959 key = sid_to_key(s_id); 1960 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1961 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1962 uint32_t op_key; 1963 u64 op_lun; 1964 1965 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1966 op_lun = scsilun_to_int( 1967 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1968 if (op_key == key && op_lun == lun) 1969 op->aborted = true; 1970 } 1971 1972 list_for_each_entry(op, &vha->unknown_atio_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(cmd, &vha->qla_cmd_list, cmd_list) { 1984 uint32_t cmd_key; 1985 u64 cmd_lun; 1986 1987 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1988 cmd_lun = scsilun_to_int( 1989 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1990 if (cmd_key == key && cmd_lun == lun) 1991 cmd->aborted = 1; 1992 } 1993 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1994 } 1995 1996 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 1997 uint64_t unpacked_lun) 1998 { 1999 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2000 struct qla_qpair_hint *h = NULL; 2001 2002 if (vha->flags.qpairs_available) { 2003 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2004 if (!h) 2005 h = &tgt->qphints[0]; 2006 } else { 2007 h = &tgt->qphints[0]; 2008 } 2009 2010 return h; 2011 } 2012 2013 static void qlt_do_tmr_work(struct work_struct *work) 2014 { 2015 struct qla_tgt_mgmt_cmd *mcmd = 2016 container_of(work, struct qla_tgt_mgmt_cmd, work); 2017 struct qla_hw_data *ha = mcmd->vha->hw; 2018 int rc = EIO; 2019 uint32_t tag; 2020 unsigned long flags; 2021 2022 switch (mcmd->tmr_func) { 2023 case QLA_TGT_ABTS: 2024 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort; 2025 break; 2026 default: 2027 tag = 0; 2028 break; 2029 } 2030 2031 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2032 mcmd->tmr_func, tag); 2033 2034 if (rc != 0) { 2035 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2036 switch (mcmd->tmr_func) { 2037 case QLA_TGT_ABTS: 2038 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2039 qlt_build_abts_resp_iocb(mcmd); 2040 break; 2041 case QLA_TGT_LUN_RESET: 2042 case QLA_TGT_CLEAR_TS: 2043 case QLA_TGT_ABORT_TS: 2044 case QLA_TGT_CLEAR_ACA: 2045 case QLA_TGT_TARGET_RESET: 2046 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2047 qla_sam_status); 2048 break; 2049 2050 case QLA_TGT_ABORT_ALL: 2051 case QLA_TGT_NEXUS_LOSS_SESS: 2052 case QLA_TGT_NEXUS_LOSS: 2053 qlt_send_notify_ack(mcmd->qpair, 2054 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2055 break; 2056 } 2057 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2058 2059 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2060 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2061 mcmd->vha->vp_idx, rc); 2062 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2063 } 2064 } 2065 2066 /* ha->hardware_lock supposed to be held on entry */ 2067 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2068 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2069 { 2070 struct qla_hw_data *ha = vha->hw; 2071 struct qla_tgt_mgmt_cmd *mcmd; 2072 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2073 2074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2075 "qla_target(%d): task abort (tag=%d)\n", 2076 vha->vp_idx, abts->exchange_addr_to_abort); 2077 2078 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2079 if (mcmd == NULL) { 2080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2081 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2082 vha->vp_idx, __func__); 2083 return -ENOMEM; 2084 } 2085 memset(mcmd, 0, sizeof(*mcmd)); 2086 mcmd->cmd_type = TYPE_TGT_TMCMD; 2087 mcmd->sess = sess; 2088 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2089 mcmd->reset_count = ha->base_qpair->chip_reset; 2090 mcmd->tmr_func = QLA_TGT_ABTS; 2091 mcmd->qpair = h->qpair; 2092 mcmd->vha = vha; 2093 2094 /* 2095 * LUN is looked up by target-core internally based on the passed 2096 * abts->exchange_addr_to_abort tag. 2097 */ 2098 mcmd->se_cmd.cpuid = h->cpuid; 2099 2100 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2101 struct qla_tgt_cmd *abort_cmd; 2102 2103 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2104 abts->exchange_addr_to_abort); 2105 if (abort_cmd && abort_cmd->qpair) { 2106 mcmd->qpair = abort_cmd->qpair; 2107 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2108 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2109 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2110 } 2111 } 2112 2113 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2114 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2115 2116 return 0; 2117 } 2118 2119 /* 2120 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2121 */ 2122 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2123 struct abts_recv_from_24xx *abts) 2124 { 2125 struct qla_hw_data *ha = vha->hw; 2126 struct fc_port *sess; 2127 uint32_t tag = abts->exchange_addr_to_abort; 2128 be_id_t s_id; 2129 int rc; 2130 unsigned long flags; 2131 2132 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2133 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2134 "qla_target(%d): ABTS: Abort Sequence not " 2135 "supported\n", vha->vp_idx); 2136 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2137 false); 2138 return; 2139 } 2140 2141 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2143 "qla_target(%d): ABTS: Unknown Exchange " 2144 "Address received\n", vha->vp_idx); 2145 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2146 false); 2147 return; 2148 } 2149 2150 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2151 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2152 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2153 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2154 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2155 2156 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2157 2158 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2159 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2160 if (!sess) { 2161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2162 "qla_target(%d): task abort for non-existent session\n", 2163 vha->vp_idx); 2164 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2165 2166 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2167 false); 2168 return; 2169 } 2170 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2171 2172 2173 if (sess->deleted) { 2174 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2175 false); 2176 return; 2177 } 2178 2179 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2180 if (rc != 0) { 2181 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2182 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2183 vha->vp_idx, rc); 2184 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2185 false); 2186 return; 2187 } 2188 } 2189 2190 /* 2191 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2192 */ 2193 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2194 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2195 { 2196 struct scsi_qla_host *ha = mcmd->vha; 2197 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2198 struct ctio7_to_24xx *ctio; 2199 uint16_t temp; 2200 2201 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2202 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2203 ha, atio, resp_code); 2204 2205 2206 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2207 if (ctio == NULL) { 2208 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2209 "qla_target(%d): %s failed: unable to allocate " 2210 "request packet\n", ha->vp_idx, __func__); 2211 return; 2212 } 2213 2214 ctio->entry_type = CTIO_TYPE7; 2215 ctio->entry_count = 1; 2216 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2217 ctio->nport_handle = mcmd->sess->loop_id; 2218 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2219 ctio->vp_index = ha->vp_idx; 2220 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2221 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2222 temp = (atio->u.isp24.attr << 9)| 2223 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2224 ctio->u.status1.flags = cpu_to_le16(temp); 2225 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2226 ctio->u.status1.ox_id = cpu_to_le16(temp); 2227 ctio->u.status1.scsi_status = 2228 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2229 ctio->u.status1.response_len = cpu_to_le16(8); 2230 ctio->u.status1.sense_data[0] = resp_code; 2231 2232 /* Memory Barrier */ 2233 wmb(); 2234 if (qpair->reqq_start_iocbs) 2235 qpair->reqq_start_iocbs(qpair); 2236 else 2237 qla2x00_start_iocbs(ha, qpair->req); 2238 } 2239 2240 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2241 { 2242 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2243 } 2244 EXPORT_SYMBOL(qlt_free_mcmd); 2245 2246 /* 2247 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2248 * reacquire 2249 */ 2250 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2251 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2252 { 2253 struct atio_from_isp *atio = &cmd->atio; 2254 struct ctio7_to_24xx *ctio; 2255 uint16_t temp; 2256 struct scsi_qla_host *vha = cmd->vha; 2257 2258 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2259 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2260 "sense_key=%02x, asc=%02x, ascq=%02x", 2261 vha, atio, scsi_status, sense_key, asc, ascq); 2262 2263 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2264 if (!ctio) { 2265 ql_dbg(ql_dbg_async, vha, 0x3067, 2266 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2267 vha->host_no, __func__); 2268 goto out; 2269 } 2270 2271 ctio->entry_type = CTIO_TYPE7; 2272 ctio->entry_count = 1; 2273 ctio->handle = QLA_TGT_SKIP_HANDLE; 2274 ctio->nport_handle = cmd->sess->loop_id; 2275 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2276 ctio->vp_index = vha->vp_idx; 2277 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2278 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2279 temp = (atio->u.isp24.attr << 9) | 2280 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2281 ctio->u.status1.flags = cpu_to_le16(temp); 2282 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2283 ctio->u.status1.ox_id = cpu_to_le16(temp); 2284 ctio->u.status1.scsi_status = 2285 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2286 ctio->u.status1.response_len = cpu_to_le16(18); 2287 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2288 2289 if (ctio->u.status1.residual != 0) 2290 ctio->u.status1.scsi_status |= 2291 cpu_to_le16(SS_RESIDUAL_UNDER); 2292 2293 /* Fixed format sense data. */ 2294 ctio->u.status1.sense_data[0] = 0x70; 2295 ctio->u.status1.sense_data[2] = sense_key; 2296 /* Additional sense length */ 2297 ctio->u.status1.sense_data[7] = 0xa; 2298 /* ASC and ASCQ */ 2299 ctio->u.status1.sense_data[12] = asc; 2300 ctio->u.status1.sense_data[13] = ascq; 2301 2302 /* Memory Barrier */ 2303 wmb(); 2304 2305 if (qpair->reqq_start_iocbs) 2306 qpair->reqq_start_iocbs(qpair); 2307 else 2308 qla2x00_start_iocbs(vha, qpair->req); 2309 2310 out: 2311 return; 2312 } 2313 2314 /* callback from target fabric module code */ 2315 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2316 { 2317 struct scsi_qla_host *vha = mcmd->sess->vha; 2318 struct qla_hw_data *ha = vha->hw; 2319 unsigned long flags; 2320 struct qla_qpair *qpair = mcmd->qpair; 2321 bool free_mcmd = true; 2322 2323 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2324 "TM response mcmd (%p) status %#x state %#x", 2325 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2326 2327 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2328 2329 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2330 /* 2331 * Either the port is not online or this request was from 2332 * previous life, just abort the processing. 2333 */ 2334 ql_dbg(ql_dbg_async, vha, 0xe100, 2335 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2336 vha->flags.online, qla2x00_reset_active(vha), 2337 mcmd->reset_count, qpair->chip_reset); 2338 ha->tgt.tgt_ops->free_mcmd(mcmd); 2339 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2340 return; 2341 } 2342 2343 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2344 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2345 case ELS_LOGO: 2346 case ELS_PRLO: 2347 case ELS_TPRLO: 2348 ql_dbg(ql_dbg_disc, vha, 0x2106, 2349 "TM response logo %8phC status %#x state %#x", 2350 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2351 mcmd->flags); 2352 qlt_schedule_sess_for_deletion(mcmd->sess); 2353 break; 2354 default: 2355 qlt_send_notify_ack(vha->hw->base_qpair, 2356 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2357 break; 2358 } 2359 } else { 2360 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2361 qlt_build_abts_resp_iocb(mcmd); 2362 free_mcmd = false; 2363 } else 2364 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2365 mcmd->fc_tm_rsp); 2366 } 2367 /* 2368 * Make the callback for ->free_mcmd() to queue_work() and invoke 2369 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2370 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2371 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2372 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2373 * qlt_xmit_tm_rsp() returns here.. 2374 */ 2375 if (free_mcmd) 2376 ha->tgt.tgt_ops->free_mcmd(mcmd); 2377 2378 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2379 } 2380 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2381 2382 /* No locks */ 2383 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2384 { 2385 struct qla_tgt_cmd *cmd = prm->cmd; 2386 2387 BUG_ON(cmd->sg_cnt == 0); 2388 2389 prm->sg = (struct scatterlist *)cmd->sg; 2390 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2391 cmd->sg_cnt, cmd->dma_data_direction); 2392 if (unlikely(prm->seg_cnt == 0)) 2393 goto out_err; 2394 2395 prm->cmd->sg_mapped = 1; 2396 2397 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2398 /* 2399 * If greater than four sg entries then we need to allocate 2400 * the continuation entries 2401 */ 2402 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2403 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2404 QLA_TGT_DATASEGS_PER_CMD_24XX, 2405 QLA_TGT_DATASEGS_PER_CONT_24XX); 2406 } else { 2407 /* DIF */ 2408 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2409 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2410 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2411 prm->tot_dsds = prm->seg_cnt; 2412 } else 2413 prm->tot_dsds = prm->seg_cnt; 2414 2415 if (cmd->prot_sg_cnt) { 2416 prm->prot_sg = cmd->prot_sg; 2417 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2418 cmd->prot_sg, cmd->prot_sg_cnt, 2419 cmd->dma_data_direction); 2420 if (unlikely(prm->prot_seg_cnt == 0)) 2421 goto out_err; 2422 2423 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2424 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2425 /* Dif Bundling not support here */ 2426 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2427 cmd->blk_sz); 2428 prm->tot_dsds += prm->prot_seg_cnt; 2429 } else 2430 prm->tot_dsds += prm->prot_seg_cnt; 2431 } 2432 } 2433 2434 return 0; 2435 2436 out_err: 2437 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2438 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2439 0, prm->cmd->sg_cnt); 2440 return -1; 2441 } 2442 2443 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2444 { 2445 struct qla_hw_data *ha; 2446 struct qla_qpair *qpair; 2447 2448 if (!cmd->sg_mapped) 2449 return; 2450 2451 qpair = cmd->qpair; 2452 2453 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2454 cmd->dma_data_direction); 2455 cmd->sg_mapped = 0; 2456 2457 if (cmd->prot_sg_cnt) 2458 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2459 cmd->dma_data_direction); 2460 2461 if (!cmd->ctx) 2462 return; 2463 ha = vha->hw; 2464 if (cmd->ctx_dsd_alloced) 2465 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2466 2467 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2468 } 2469 2470 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2471 uint32_t req_cnt) 2472 { 2473 uint32_t cnt; 2474 struct req_que *req = qpair->req; 2475 2476 if (req->cnt < (req_cnt + 2)) { 2477 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2478 RD_REG_DWORD_RELAXED(req->req_q_out)); 2479 2480 if (req->ring_index < cnt) 2481 req->cnt = cnt - req->ring_index; 2482 else 2483 req->cnt = req->length - (req->ring_index - cnt); 2484 2485 if (unlikely(req->cnt < (req_cnt + 2))) 2486 return -EAGAIN; 2487 } 2488 2489 req->cnt -= req_cnt; 2490 2491 return 0; 2492 } 2493 2494 /* 2495 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2496 */ 2497 static inline void *qlt_get_req_pkt(struct req_que *req) 2498 { 2499 /* Adjust ring index. */ 2500 req->ring_index++; 2501 if (req->ring_index == req->length) { 2502 req->ring_index = 0; 2503 req->ring_ptr = req->ring; 2504 } else { 2505 req->ring_ptr++; 2506 } 2507 return (cont_entry_t *)req->ring_ptr; 2508 } 2509 2510 /* ha->hardware_lock supposed to be held on entry */ 2511 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2512 { 2513 uint32_t h; 2514 int index; 2515 uint8_t found = 0; 2516 struct req_que *req = qpair->req; 2517 2518 h = req->current_outstanding_cmd; 2519 2520 for (index = 1; index < req->num_outstanding_cmds; index++) { 2521 h++; 2522 if (h == req->num_outstanding_cmds) 2523 h = 1; 2524 2525 if (h == QLA_TGT_SKIP_HANDLE) 2526 continue; 2527 2528 if (!req->outstanding_cmds[h]) { 2529 found = 1; 2530 break; 2531 } 2532 } 2533 2534 if (found) { 2535 req->current_outstanding_cmd = h; 2536 } else { 2537 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2538 "qla_target(%d): Ran out of empty cmd slots\n", 2539 qpair->vha->vp_idx); 2540 h = QLA_TGT_NULL_HANDLE; 2541 } 2542 2543 return h; 2544 } 2545 2546 /* ha->hardware_lock supposed to be held on entry */ 2547 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2548 struct qla_tgt_prm *prm) 2549 { 2550 uint32_t h; 2551 struct ctio7_to_24xx *pkt; 2552 struct atio_from_isp *atio = &prm->cmd->atio; 2553 uint16_t temp; 2554 2555 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2556 prm->pkt = pkt; 2557 memset(pkt, 0, sizeof(*pkt)); 2558 2559 pkt->entry_type = CTIO_TYPE7; 2560 pkt->entry_count = (uint8_t)prm->req_cnt; 2561 pkt->vp_index = prm->cmd->vp_idx; 2562 2563 h = qlt_make_handle(qpair); 2564 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2565 /* 2566 * CTIO type 7 from the firmware doesn't provide a way to 2567 * know the initiator's LOOP ID, hence we can't find 2568 * the session and, so, the command. 2569 */ 2570 return -EAGAIN; 2571 } else 2572 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2573 2574 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2575 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2576 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2577 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2578 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2579 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2580 temp = atio->u.isp24.attr << 9; 2581 pkt->u.status0.flags |= cpu_to_le16(temp); 2582 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2583 pkt->u.status0.ox_id = cpu_to_le16(temp); 2584 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2585 2586 return 0; 2587 } 2588 2589 /* 2590 * ha->hardware_lock supposed to be held on entry. We have already made sure 2591 * that there is sufficient amount of request entries to not drop it. 2592 */ 2593 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2594 { 2595 int cnt; 2596 struct dsd64 *cur_dsd; 2597 2598 /* Build continuation packets */ 2599 while (prm->seg_cnt > 0) { 2600 cont_a64_entry_t *cont_pkt64 = 2601 (cont_a64_entry_t *)qlt_get_req_pkt( 2602 prm->cmd->qpair->req); 2603 2604 /* 2605 * Make sure that from cont_pkt64 none of 2606 * 64-bit specific fields used for 32-bit 2607 * addressing. Cast to (cont_entry_t *) for 2608 * that. 2609 */ 2610 2611 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2612 2613 cont_pkt64->entry_count = 1; 2614 cont_pkt64->sys_define = 0; 2615 2616 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2617 cur_dsd = cont_pkt64->dsd; 2618 2619 /* Load continuation entry data segments */ 2620 for (cnt = 0; 2621 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2622 cnt++, prm->seg_cnt--) { 2623 append_dsd64(&cur_dsd, prm->sg); 2624 prm->sg = sg_next(prm->sg); 2625 } 2626 } 2627 } 2628 2629 /* 2630 * ha->hardware_lock supposed to be held on entry. We have already made sure 2631 * that there is sufficient amount of request entries to not drop it. 2632 */ 2633 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2634 { 2635 int cnt; 2636 struct dsd64 *cur_dsd; 2637 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2638 2639 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2640 2641 /* Setup packet address segment pointer */ 2642 cur_dsd = &pkt24->u.status0.dsd; 2643 2644 /* Set total data segment count */ 2645 if (prm->seg_cnt) 2646 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2647 2648 if (prm->seg_cnt == 0) { 2649 /* No data transfer */ 2650 cur_dsd->address = 0; 2651 cur_dsd->length = 0; 2652 return; 2653 } 2654 2655 /* If scatter gather */ 2656 2657 /* Load command entry data segments */ 2658 for (cnt = 0; 2659 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2660 cnt++, prm->seg_cnt--) { 2661 append_dsd64(&cur_dsd, prm->sg); 2662 prm->sg = sg_next(prm->sg); 2663 } 2664 2665 qlt_load_cont_data_segments(prm); 2666 } 2667 2668 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2669 { 2670 return cmd->bufflen > 0; 2671 } 2672 2673 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2674 { 2675 struct qla_tgt_cmd *cmd; 2676 struct scsi_qla_host *vha; 2677 2678 /* asc 0x10=dif error */ 2679 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2680 cmd = prm->cmd; 2681 vha = cmd->vha; 2682 /* ASCQ */ 2683 switch (prm->sense_buffer[13]) { 2684 case 1: 2685 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2686 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2687 "se_cmd=%p tag[%x]", 2688 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2689 cmd->atio.u.isp24.exchange_addr); 2690 break; 2691 case 2: 2692 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2693 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2694 "se_cmd=%p tag[%x]", 2695 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2696 cmd->atio.u.isp24.exchange_addr); 2697 break; 2698 case 3: 2699 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2700 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2701 "se_cmd=%p tag[%x]", 2702 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2703 cmd->atio.u.isp24.exchange_addr); 2704 break; 2705 default: 2706 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2707 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2708 "se_cmd=%p tag[%x]", 2709 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2710 cmd->atio.u.isp24.exchange_addr); 2711 break; 2712 } 2713 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2714 } 2715 } 2716 2717 /* 2718 * Called without ha->hardware_lock held 2719 */ 2720 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2721 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2722 uint32_t *full_req_cnt) 2723 { 2724 struct se_cmd *se_cmd = &cmd->se_cmd; 2725 struct qla_qpair *qpair = cmd->qpair; 2726 2727 prm->cmd = cmd; 2728 prm->tgt = cmd->tgt; 2729 prm->pkt = NULL; 2730 prm->rq_result = scsi_status; 2731 prm->sense_buffer = &cmd->sense_buffer[0]; 2732 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2733 prm->sg = NULL; 2734 prm->seg_cnt = -1; 2735 prm->req_cnt = 1; 2736 prm->residual = 0; 2737 prm->add_status_pkt = 0; 2738 prm->prot_sg = NULL; 2739 prm->prot_seg_cnt = 0; 2740 prm->tot_dsds = 0; 2741 2742 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2743 if (qlt_pci_map_calc_cnt(prm) != 0) 2744 return -EAGAIN; 2745 } 2746 2747 *full_req_cnt = prm->req_cnt; 2748 2749 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2750 prm->residual = se_cmd->residual_count; 2751 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2752 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2753 prm->residual, se_cmd->tag, 2754 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2755 cmd->bufflen, prm->rq_result); 2756 prm->rq_result |= SS_RESIDUAL_UNDER; 2757 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2758 prm->residual = se_cmd->residual_count; 2759 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2760 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2761 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2762 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2763 prm->rq_result |= SS_RESIDUAL_OVER; 2764 } 2765 2766 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2767 /* 2768 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2769 * ignored in *xmit_response() below 2770 */ 2771 if (qlt_has_data(cmd)) { 2772 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2773 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2774 (prm->rq_result != 0))) { 2775 prm->add_status_pkt = 1; 2776 (*full_req_cnt)++; 2777 } 2778 } 2779 } 2780 2781 return 0; 2782 } 2783 2784 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2785 int sending_sense) 2786 { 2787 if (cmd->qpair->enable_class_2) 2788 return 0; 2789 2790 if (sending_sense) 2791 return cmd->conf_compl_supported; 2792 else 2793 return cmd->qpair->enable_explicit_conf && 2794 cmd->conf_compl_supported; 2795 } 2796 2797 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2798 struct qla_tgt_prm *prm) 2799 { 2800 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2801 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2802 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2803 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2804 ctio->u.status0.flags |= cpu_to_le16( 2805 CTIO7_FLAGS_EXPLICIT_CONFORM | 2806 CTIO7_FLAGS_CONFORM_REQ); 2807 } 2808 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2809 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2810 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2811 int i; 2812 2813 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2814 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2815 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2816 "Skipping EXPLICIT_CONFORM and " 2817 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2818 "non GOOD status\n"); 2819 goto skip_explict_conf; 2820 } 2821 ctio->u.status1.flags |= cpu_to_le16( 2822 CTIO7_FLAGS_EXPLICIT_CONFORM | 2823 CTIO7_FLAGS_CONFORM_REQ); 2824 } 2825 skip_explict_conf: 2826 ctio->u.status1.flags &= 2827 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2828 ctio->u.status1.flags |= 2829 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2830 ctio->u.status1.scsi_status |= 2831 cpu_to_le16(SS_SENSE_LEN_VALID); 2832 ctio->u.status1.sense_length = 2833 cpu_to_le16(prm->sense_buffer_len); 2834 for (i = 0; i < prm->sense_buffer_len/4; i++) 2835 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2836 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2837 2838 qlt_print_dif_err(prm); 2839 2840 } else { 2841 ctio->u.status1.flags &= 2842 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2843 ctio->u.status1.flags |= 2844 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2845 ctio->u.status1.sense_length = 0; 2846 memset(ctio->u.status1.sense_data, 0, 2847 sizeof(ctio->u.status1.sense_data)); 2848 } 2849 2850 /* Sense with len > 24, is it possible ??? */ 2851 } 2852 2853 static inline int 2854 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2855 { 2856 switch (se_cmd->prot_op) { 2857 case TARGET_PROT_DOUT_INSERT: 2858 case TARGET_PROT_DIN_STRIP: 2859 if (ql2xenablehba_err_chk >= 1) 2860 return 1; 2861 break; 2862 case TARGET_PROT_DOUT_PASS: 2863 case TARGET_PROT_DIN_PASS: 2864 if (ql2xenablehba_err_chk >= 2) 2865 return 1; 2866 break; 2867 case TARGET_PROT_DIN_INSERT: 2868 case TARGET_PROT_DOUT_STRIP: 2869 return 1; 2870 default: 2871 break; 2872 } 2873 return 0; 2874 } 2875 2876 static inline int 2877 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2878 { 2879 switch (se_cmd->prot_op) { 2880 case TARGET_PROT_DIN_INSERT: 2881 case TARGET_PROT_DOUT_INSERT: 2882 case TARGET_PROT_DIN_STRIP: 2883 case TARGET_PROT_DOUT_STRIP: 2884 case TARGET_PROT_DIN_PASS: 2885 case TARGET_PROT_DOUT_PASS: 2886 return 1; 2887 default: 2888 return 0; 2889 } 2890 return 0; 2891 } 2892 2893 /* 2894 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2895 */ 2896 static void 2897 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2898 uint16_t *pfw_prot_opts) 2899 { 2900 struct se_cmd *se_cmd = &cmd->se_cmd; 2901 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2902 scsi_qla_host_t *vha = cmd->tgt->vha; 2903 struct qla_hw_data *ha = vha->hw; 2904 uint32_t t32 = 0; 2905 2906 /* 2907 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2908 * have been immplemented by TCM, before AppTag is avail. 2909 * Look for modesense_handlers[] 2910 */ 2911 ctx->app_tag = 0; 2912 ctx->app_tag_mask[0] = 0x0; 2913 ctx->app_tag_mask[1] = 0x0; 2914 2915 if (IS_PI_UNINIT_CAPABLE(ha)) { 2916 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2917 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2918 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2919 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2920 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2921 } 2922 2923 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2924 2925 switch (se_cmd->prot_type) { 2926 case TARGET_DIF_TYPE0_PROT: 2927 /* 2928 * No check for ql2xenablehba_err_chk, as it 2929 * would be an I/O error if hba tag generation 2930 * is not done. 2931 */ 2932 ctx->ref_tag = cpu_to_le32(lba); 2933 /* enable ALL bytes of the ref tag */ 2934 ctx->ref_tag_mask[0] = 0xff; 2935 ctx->ref_tag_mask[1] = 0xff; 2936 ctx->ref_tag_mask[2] = 0xff; 2937 ctx->ref_tag_mask[3] = 0xff; 2938 break; 2939 case TARGET_DIF_TYPE1_PROT: 2940 /* 2941 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2942 * REF tag, and 16 bit app tag. 2943 */ 2944 ctx->ref_tag = cpu_to_le32(lba); 2945 if (!qla_tgt_ref_mask_check(se_cmd) || 2946 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2947 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2948 break; 2949 } 2950 /* enable ALL bytes of the ref tag */ 2951 ctx->ref_tag_mask[0] = 0xff; 2952 ctx->ref_tag_mask[1] = 0xff; 2953 ctx->ref_tag_mask[2] = 0xff; 2954 ctx->ref_tag_mask[3] = 0xff; 2955 break; 2956 case TARGET_DIF_TYPE2_PROT: 2957 /* 2958 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2959 * tag has to match LBA in CDB + N 2960 */ 2961 ctx->ref_tag = cpu_to_le32(lba); 2962 if (!qla_tgt_ref_mask_check(se_cmd) || 2963 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2964 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2965 break; 2966 } 2967 /* enable ALL bytes of the ref tag */ 2968 ctx->ref_tag_mask[0] = 0xff; 2969 ctx->ref_tag_mask[1] = 0xff; 2970 ctx->ref_tag_mask[2] = 0xff; 2971 ctx->ref_tag_mask[3] = 0xff; 2972 break; 2973 case TARGET_DIF_TYPE3_PROT: 2974 /* For TYPE 3 protection: 16 bit GUARD only */ 2975 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2976 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2977 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2978 break; 2979 } 2980 } 2981 2982 static inline int 2983 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2984 { 2985 struct dsd64 *cur_dsd; 2986 uint32_t transfer_length = 0; 2987 uint32_t data_bytes; 2988 uint32_t dif_bytes; 2989 uint8_t bundling = 1; 2990 struct crc_context *crc_ctx_pkt = NULL; 2991 struct qla_hw_data *ha; 2992 struct ctio_crc2_to_fw *pkt; 2993 dma_addr_t crc_ctx_dma; 2994 uint16_t fw_prot_opts = 0; 2995 struct qla_tgt_cmd *cmd = prm->cmd; 2996 struct se_cmd *se_cmd = &cmd->se_cmd; 2997 uint32_t h; 2998 struct atio_from_isp *atio = &prm->cmd->atio; 2999 struct qla_tc_param tc; 3000 uint16_t t16; 3001 scsi_qla_host_t *vha = cmd->vha; 3002 3003 ha = vha->hw; 3004 3005 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3006 prm->pkt = pkt; 3007 memset(pkt, 0, sizeof(*pkt)); 3008 3009 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3010 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3011 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3012 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3013 3014 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3015 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3016 bundling = 0; 3017 3018 /* Compute dif len and adjust data len to incude protection */ 3019 data_bytes = cmd->bufflen; 3020 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3021 3022 switch (se_cmd->prot_op) { 3023 case TARGET_PROT_DIN_INSERT: 3024 case TARGET_PROT_DOUT_STRIP: 3025 transfer_length = data_bytes; 3026 if (cmd->prot_sg_cnt) 3027 data_bytes += dif_bytes; 3028 break; 3029 case TARGET_PROT_DIN_STRIP: 3030 case TARGET_PROT_DOUT_INSERT: 3031 case TARGET_PROT_DIN_PASS: 3032 case TARGET_PROT_DOUT_PASS: 3033 transfer_length = data_bytes + dif_bytes; 3034 break; 3035 default: 3036 BUG(); 3037 break; 3038 } 3039 3040 if (!qlt_hba_err_chk_enabled(se_cmd)) 3041 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3042 /* HBA error checking enabled */ 3043 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3044 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3045 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3046 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3047 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3048 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3049 } 3050 3051 switch (se_cmd->prot_op) { 3052 case TARGET_PROT_DIN_INSERT: 3053 case TARGET_PROT_DOUT_INSERT: 3054 fw_prot_opts |= PO_MODE_DIF_INSERT; 3055 break; 3056 case TARGET_PROT_DIN_STRIP: 3057 case TARGET_PROT_DOUT_STRIP: 3058 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3059 break; 3060 case TARGET_PROT_DIN_PASS: 3061 case TARGET_PROT_DOUT_PASS: 3062 fw_prot_opts |= PO_MODE_DIF_PASS; 3063 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3064 break; 3065 default:/* Normal Request */ 3066 fw_prot_opts |= PO_MODE_DIF_PASS; 3067 break; 3068 } 3069 3070 /* ---- PKT ---- */ 3071 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3072 pkt->entry_type = CTIO_CRC2; 3073 pkt->entry_count = 1; 3074 pkt->vp_index = cmd->vp_idx; 3075 3076 h = qlt_make_handle(qpair); 3077 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3078 /* 3079 * CTIO type 7 from the firmware doesn't provide a way to 3080 * know the initiator's LOOP ID, hence we can't find 3081 * the session and, so, the command. 3082 */ 3083 return -EAGAIN; 3084 } else 3085 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3086 3087 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 3088 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3089 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3090 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3091 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3092 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3093 3094 /* silence compile warning */ 3095 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3096 pkt->ox_id = cpu_to_le16(t16); 3097 3098 t16 = (atio->u.isp24.attr << 9); 3099 pkt->flags |= cpu_to_le16(t16); 3100 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3101 3102 /* Set transfer direction */ 3103 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3104 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3105 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3106 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3107 3108 pkt->dseg_count = prm->tot_dsds; 3109 /* Fibre channel byte count */ 3110 pkt->transfer_length = cpu_to_le32(transfer_length); 3111 3112 /* ----- CRC context -------- */ 3113 3114 /* Allocate CRC context from global pool */ 3115 crc_ctx_pkt = cmd->ctx = 3116 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3117 3118 if (!crc_ctx_pkt) 3119 goto crc_queuing_error; 3120 3121 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3122 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3123 3124 /* Set handle */ 3125 crc_ctx_pkt->handle = pkt->handle; 3126 3127 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3128 3129 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3130 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3131 3132 if (!bundling) { 3133 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3134 } else { 3135 /* 3136 * Configure Bundling if we need to fetch interlaving 3137 * protection PCI accesses 3138 */ 3139 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3140 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3141 crc_ctx_pkt->u.bundling.dseg_count = 3142 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3143 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3144 } 3145 3146 /* Finish the common fields of CRC pkt */ 3147 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3148 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3149 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3150 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3151 3152 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3153 tc.vha = vha; 3154 tc.blk_sz = cmd->blk_sz; 3155 tc.bufflen = cmd->bufflen; 3156 tc.sg = cmd->sg; 3157 tc.prot_sg = cmd->prot_sg; 3158 tc.ctx = crc_ctx_pkt; 3159 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3160 3161 /* Walks data segments */ 3162 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3163 3164 if (!bundling && prm->prot_seg_cnt) { 3165 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3166 prm->tot_dsds, &tc)) 3167 goto crc_queuing_error; 3168 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3169 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3170 goto crc_queuing_error; 3171 3172 if (bundling && prm->prot_seg_cnt) { 3173 /* Walks dif segments */ 3174 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3175 3176 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3177 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3178 prm->prot_seg_cnt, cmd)) 3179 goto crc_queuing_error; 3180 } 3181 return QLA_SUCCESS; 3182 3183 crc_queuing_error: 3184 /* Cleanup will be performed by the caller */ 3185 qpair->req->outstanding_cmds[h] = NULL; 3186 3187 return QLA_FUNCTION_FAILED; 3188 } 3189 3190 /* 3191 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3192 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3193 */ 3194 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3195 uint8_t scsi_status) 3196 { 3197 struct scsi_qla_host *vha = cmd->vha; 3198 struct qla_qpair *qpair = cmd->qpair; 3199 struct ctio7_to_24xx *pkt; 3200 struct qla_tgt_prm prm; 3201 uint32_t full_req_cnt = 0; 3202 unsigned long flags = 0; 3203 int res; 3204 3205 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3206 (cmd->sess && cmd->sess->deleted)) { 3207 cmd->state = QLA_TGT_STATE_PROCESSED; 3208 res = 0; 3209 goto free; 3210 } 3211 3212 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3213 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3214 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3215 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3216 &cmd->se_cmd, qpair->id); 3217 3218 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3219 &full_req_cnt); 3220 if (unlikely(res != 0)) 3221 goto free; 3222 3223 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3224 3225 if (xmit_type == QLA_TGT_XMIT_STATUS) 3226 qpair->tgt_counters.core_qla_snd_status++; 3227 else 3228 qpair->tgt_counters.core_qla_que_buf++; 3229 3230 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3231 /* 3232 * Either the port is not online or this request was from 3233 * previous life, just abort the processing. 3234 */ 3235 cmd->state = QLA_TGT_STATE_PROCESSED; 3236 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3237 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3238 vha->flags.online, qla2x00_reset_active(vha), 3239 cmd->reset_count, qpair->chip_reset); 3240 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3241 res = 0; 3242 goto free; 3243 } 3244 3245 /* Does F/W have an IOCBs for this request */ 3246 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3247 if (unlikely(res)) 3248 goto out_unmap_unlock; 3249 3250 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3251 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3252 else 3253 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3254 if (unlikely(res != 0)) { 3255 qpair->req->cnt += full_req_cnt; 3256 goto out_unmap_unlock; 3257 } 3258 3259 pkt = (struct ctio7_to_24xx *)prm.pkt; 3260 3261 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3262 pkt->u.status0.flags |= 3263 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3264 CTIO7_FLAGS_STATUS_MODE_0); 3265 3266 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3267 qlt_load_data_segments(&prm); 3268 3269 if (prm.add_status_pkt == 0) { 3270 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3271 pkt->u.status0.scsi_status = 3272 cpu_to_le16(prm.rq_result); 3273 pkt->u.status0.residual = 3274 cpu_to_le32(prm.residual); 3275 pkt->u.status0.flags |= cpu_to_le16( 3276 CTIO7_FLAGS_SEND_STATUS); 3277 if (qlt_need_explicit_conf(cmd, 0)) { 3278 pkt->u.status0.flags |= 3279 cpu_to_le16( 3280 CTIO7_FLAGS_EXPLICIT_CONFORM | 3281 CTIO7_FLAGS_CONFORM_REQ); 3282 } 3283 } 3284 3285 } else { 3286 /* 3287 * We have already made sure that there is sufficient 3288 * amount of request entries to not drop HW lock in 3289 * req_pkt(). 3290 */ 3291 struct ctio7_to_24xx *ctio = 3292 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3293 qpair->req); 3294 3295 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3296 "Building additional status packet 0x%p.\n", 3297 ctio); 3298 3299 /* 3300 * T10Dif: ctio_crc2_to_fw overlay ontop of 3301 * ctio7_to_24xx 3302 */ 3303 memcpy(ctio, pkt, sizeof(*ctio)); 3304 /* reset back to CTIO7 */ 3305 ctio->entry_count = 1; 3306 ctio->entry_type = CTIO_TYPE7; 3307 ctio->dseg_count = 0; 3308 ctio->u.status1.flags &= ~cpu_to_le16( 3309 CTIO7_FLAGS_DATA_IN); 3310 3311 /* Real finish is ctio_m1's finish */ 3312 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3313 pkt->u.status0.flags |= cpu_to_le16( 3314 CTIO7_FLAGS_DONT_RET_CTIO); 3315 3316 /* qlt_24xx_init_ctio_to_isp will correct 3317 * all neccessary fields that's part of CTIO7. 3318 * There should be no residual of CTIO-CRC2 data. 3319 */ 3320 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3321 &prm); 3322 } 3323 } else 3324 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3325 3326 3327 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3328 cmd->cmd_sent_to_fw = 1; 3329 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3330 3331 /* Memory Barrier */ 3332 wmb(); 3333 if (qpair->reqq_start_iocbs) 3334 qpair->reqq_start_iocbs(qpair); 3335 else 3336 qla2x00_start_iocbs(vha, qpair->req); 3337 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3338 3339 return 0; 3340 3341 out_unmap_unlock: 3342 qlt_unmap_sg(vha, cmd); 3343 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3344 3345 free: 3346 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3347 return res; 3348 } 3349 EXPORT_SYMBOL(qlt_xmit_response); 3350 3351 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3352 { 3353 struct ctio7_to_24xx *pkt; 3354 struct scsi_qla_host *vha = cmd->vha; 3355 struct qla_tgt *tgt = cmd->tgt; 3356 struct qla_tgt_prm prm; 3357 unsigned long flags = 0; 3358 int res = 0; 3359 struct qla_qpair *qpair = cmd->qpair; 3360 3361 memset(&prm, 0, sizeof(prm)); 3362 prm.cmd = cmd; 3363 prm.tgt = tgt; 3364 prm.sg = NULL; 3365 prm.req_cnt = 1; 3366 3367 /* Calculate number of entries and segments required */ 3368 if (qlt_pci_map_calc_cnt(&prm) != 0) 3369 return -EAGAIN; 3370 3371 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3372 (cmd->sess && cmd->sess->deleted)) { 3373 /* 3374 * Either the port is not online or this request was from 3375 * previous life, just abort the processing. 3376 */ 3377 cmd->aborted = 1; 3378 cmd->write_data_transferred = 0; 3379 cmd->state = QLA_TGT_STATE_DATA_IN; 3380 vha->hw->tgt.tgt_ops->handle_data(cmd); 3381 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3382 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3383 vha->flags.online, qla2x00_reset_active(vha), 3384 cmd->reset_count, qpair->chip_reset); 3385 return 0; 3386 } 3387 3388 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3389 /* Does F/W have an IOCBs for this request */ 3390 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3391 if (res != 0) 3392 goto out_unlock_free_unmap; 3393 if (cmd->se_cmd.prot_op) 3394 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3395 else 3396 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3397 3398 if (unlikely(res != 0)) { 3399 qpair->req->cnt += prm.req_cnt; 3400 goto out_unlock_free_unmap; 3401 } 3402 3403 pkt = (struct ctio7_to_24xx *)prm.pkt; 3404 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3405 CTIO7_FLAGS_STATUS_MODE_0); 3406 3407 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3408 qlt_load_data_segments(&prm); 3409 3410 cmd->state = QLA_TGT_STATE_NEED_DATA; 3411 cmd->cmd_sent_to_fw = 1; 3412 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3413 3414 /* Memory Barrier */ 3415 wmb(); 3416 if (qpair->reqq_start_iocbs) 3417 qpair->reqq_start_iocbs(qpair); 3418 else 3419 qla2x00_start_iocbs(vha, qpair->req); 3420 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3421 3422 return res; 3423 3424 out_unlock_free_unmap: 3425 qlt_unmap_sg(vha, cmd); 3426 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3427 3428 return res; 3429 } 3430 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3431 3432 3433 /* 3434 * it is assumed either hardware_lock or qpair lock is held. 3435 */ 3436 static void 3437 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3438 struct ctio_crc_from_fw *sts) 3439 { 3440 uint8_t *ap = &sts->actual_dif[0]; 3441 uint8_t *ep = &sts->expected_dif[0]; 3442 uint64_t lba = cmd->se_cmd.t_task_lba; 3443 uint8_t scsi_status, sense_key, asc, ascq; 3444 unsigned long flags; 3445 struct scsi_qla_host *vha = cmd->vha; 3446 3447 cmd->trc_flags |= TRC_DIF_ERR; 3448 3449 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3450 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3451 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3452 3453 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3454 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3455 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3456 3457 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3458 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3459 3460 scsi_status = sense_key = asc = ascq = 0; 3461 3462 /* check appl tag */ 3463 if (cmd->e_app_tag != cmd->a_app_tag) { 3464 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3465 "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]", 3466 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3467 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3468 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3469 cmd->atio.u.isp24.fcp_hdr.ox_id); 3470 3471 cmd->dif_err_code = DIF_ERR_APP; 3472 scsi_status = SAM_STAT_CHECK_CONDITION; 3473 sense_key = ABORTED_COMMAND; 3474 asc = 0x10; 3475 ascq = 0x2; 3476 } 3477 3478 /* check ref tag */ 3479 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3480 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3481 "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] ", 3482 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3483 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3484 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3485 cmd->atio.u.isp24.fcp_hdr.ox_id); 3486 3487 cmd->dif_err_code = DIF_ERR_REF; 3488 scsi_status = SAM_STAT_CHECK_CONDITION; 3489 sense_key = ABORTED_COMMAND; 3490 asc = 0x10; 3491 ascq = 0x3; 3492 goto out; 3493 } 3494 3495 /* check guard */ 3496 if (cmd->e_guard != cmd->a_guard) { 3497 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3498 "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]", 3499 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3500 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3501 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3502 cmd->atio.u.isp24.fcp_hdr.ox_id); 3503 3504 cmd->dif_err_code = DIF_ERR_GRD; 3505 scsi_status = SAM_STAT_CHECK_CONDITION; 3506 sense_key = ABORTED_COMMAND; 3507 asc = 0x10; 3508 ascq = 0x1; 3509 } 3510 out: 3511 switch (cmd->state) { 3512 case QLA_TGT_STATE_NEED_DATA: 3513 /* handle_data will load DIF error code */ 3514 cmd->state = QLA_TGT_STATE_DATA_IN; 3515 vha->hw->tgt.tgt_ops->handle_data(cmd); 3516 break; 3517 default: 3518 spin_lock_irqsave(&cmd->cmd_lock, flags); 3519 if (cmd->aborted) { 3520 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3521 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3522 break; 3523 } 3524 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3525 3526 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3527 ascq); 3528 /* assume scsi status gets out on the wire. 3529 * Will not wait for completion. 3530 */ 3531 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3532 break; 3533 } 3534 } 3535 3536 /* If hardware_lock held on entry, might drop it, then reaquire */ 3537 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3538 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3539 struct imm_ntfy_from_isp *ntfy) 3540 { 3541 struct nack_to_isp *nack; 3542 struct qla_hw_data *ha = vha->hw; 3543 request_t *pkt; 3544 int ret = 0; 3545 3546 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3547 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3548 3549 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3550 if (pkt == NULL) { 3551 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3552 "qla_target(%d): %s failed: unable to allocate " 3553 "request packet\n", vha->vp_idx, __func__); 3554 return -ENOMEM; 3555 } 3556 3557 pkt->entry_type = NOTIFY_ACK_TYPE; 3558 pkt->entry_count = 1; 3559 pkt->handle = QLA_TGT_SKIP_HANDLE; 3560 3561 nack = (struct nack_to_isp *)pkt; 3562 nack->ox_id = ntfy->ox_id; 3563 3564 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3565 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3566 nack->u.isp24.flags = ntfy->u.isp24.flags & 3567 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3568 } 3569 3570 /* terminate */ 3571 nack->u.isp24.flags |= 3572 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3573 3574 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3575 nack->u.isp24.status = ntfy->u.isp24.status; 3576 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3577 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3578 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3579 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3580 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3581 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3582 3583 qla2x00_start_iocbs(vha, vha->req); 3584 return ret; 3585 } 3586 3587 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3588 struct imm_ntfy_from_isp *imm, int ha_locked) 3589 { 3590 int rc; 3591 3592 WARN_ON_ONCE(!ha_locked); 3593 rc = __qlt_send_term_imm_notif(vha, imm); 3594 pr_debug("rc = %d\n", rc); 3595 } 3596 3597 /* 3598 * If hardware_lock held on entry, might drop it, then reaquire 3599 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3600 */ 3601 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3602 struct qla_tgt_cmd *cmd, 3603 struct atio_from_isp *atio) 3604 { 3605 struct scsi_qla_host *vha = qpair->vha; 3606 struct ctio7_to_24xx *ctio24; 3607 struct qla_hw_data *ha = vha->hw; 3608 request_t *pkt; 3609 int ret = 0; 3610 uint16_t temp; 3611 3612 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3613 3614 if (cmd) 3615 vha = cmd->vha; 3616 3617 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3618 if (pkt == NULL) { 3619 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3620 "qla_target(%d): %s failed: unable to allocate " 3621 "request packet\n", vha->vp_idx, __func__); 3622 return -ENOMEM; 3623 } 3624 3625 if (cmd != NULL) { 3626 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3627 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3628 "qla_target(%d): Terminating cmd %p with " 3629 "incorrect state %d\n", vha->vp_idx, cmd, 3630 cmd->state); 3631 } else 3632 ret = 1; 3633 } 3634 3635 qpair->tgt_counters.num_term_xchg_sent++; 3636 pkt->entry_count = 1; 3637 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3638 3639 ctio24 = (struct ctio7_to_24xx *)pkt; 3640 ctio24->entry_type = CTIO_TYPE7; 3641 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3642 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3643 ctio24->vp_index = vha->vp_idx; 3644 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3645 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3646 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3647 CTIO7_FLAGS_TERMINATE; 3648 ctio24->u.status1.flags = cpu_to_le16(temp); 3649 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3650 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3651 3652 /* Memory Barrier */ 3653 wmb(); 3654 if (qpair->reqq_start_iocbs) 3655 qpair->reqq_start_iocbs(qpair); 3656 else 3657 qla2x00_start_iocbs(vha, qpair->req); 3658 return ret; 3659 } 3660 3661 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3662 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3663 int ul_abort) 3664 { 3665 struct scsi_qla_host *vha; 3666 unsigned long flags = 0; 3667 int rc; 3668 3669 /* why use different vha? NPIV */ 3670 if (cmd) 3671 vha = cmd->vha; 3672 else 3673 vha = qpair->vha; 3674 3675 if (ha_locked) { 3676 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3677 if (rc == -ENOMEM) 3678 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3679 goto done; 3680 } 3681 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3682 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3683 if (rc == -ENOMEM) 3684 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3685 3686 done: 3687 if (cmd && !ul_abort && !cmd->aborted) { 3688 if (cmd->sg_mapped) 3689 qlt_unmap_sg(vha, cmd); 3690 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3691 } 3692 3693 if (!ha_locked) 3694 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3695 3696 return; 3697 } 3698 3699 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3700 { 3701 struct list_head free_list; 3702 struct qla_tgt_cmd *cmd, *tcmd; 3703 3704 vha->hw->tgt.leak_exchg_thresh_hold = 3705 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3706 3707 cmd = tcmd = NULL; 3708 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3709 INIT_LIST_HEAD(&free_list); 3710 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3711 3712 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3713 list_del(&cmd->cmd_list); 3714 /* This cmd was never sent to TCM. There is no need 3715 * to schedule free or call free_cmd 3716 */ 3717 qlt_free_cmd(cmd); 3718 vha->hw->tgt.num_qfull_cmds_alloc--; 3719 } 3720 } 3721 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3722 } 3723 3724 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3725 { 3726 uint32_t total_leaked; 3727 3728 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3729 3730 if (vha->hw->tgt.leak_exchg_thresh_hold && 3731 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3732 3733 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3734 "Chip reset due to exchange starvation: %d/%d.\n", 3735 total_leaked, vha->hw->cur_fw_xcb_count); 3736 3737 if (IS_P3P_TYPE(vha->hw)) 3738 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3739 else 3740 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3741 qla2xxx_wake_dpc(vha); 3742 } 3743 3744 } 3745 3746 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3747 { 3748 struct qla_tgt *tgt = cmd->tgt; 3749 struct scsi_qla_host *vha = tgt->vha; 3750 struct se_cmd *se_cmd = &cmd->se_cmd; 3751 unsigned long flags; 3752 3753 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3754 "qla_target(%d): terminating exchange for aborted cmd=%p " 3755 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3756 se_cmd->tag); 3757 3758 spin_lock_irqsave(&cmd->cmd_lock, flags); 3759 if (cmd->aborted) { 3760 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3761 /* 3762 * It's normal to see 2 calls in this path: 3763 * 1) XFER Rdy completion + CMD_T_ABORT 3764 * 2) TCM TMR - drain_state_list 3765 */ 3766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3767 "multiple abort. %p transport_state %x, t_state %x, " 3768 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3769 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3770 return EIO; 3771 } 3772 cmd->aborted = 1; 3773 cmd->trc_flags |= TRC_ABORT; 3774 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3775 3776 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3777 return 0; 3778 } 3779 EXPORT_SYMBOL(qlt_abort_cmd); 3780 3781 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3782 { 3783 struct fc_port *sess = cmd->sess; 3784 3785 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3786 "%s: se_cmd[%p] ox_id %04x\n", 3787 __func__, &cmd->se_cmd, 3788 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3789 3790 BUG_ON(cmd->cmd_in_wq); 3791 3792 if (cmd->sg_mapped) 3793 qlt_unmap_sg(cmd->vha, cmd); 3794 3795 if (!cmd->q_full) 3796 qlt_decr_num_pend_cmds(cmd->vha); 3797 3798 BUG_ON(cmd->sg_mapped); 3799 cmd->jiffies_at_free = get_jiffies_64(); 3800 if (unlikely(cmd->free_sg)) 3801 kfree(cmd->sg); 3802 3803 if (!sess || !sess->se_sess) { 3804 WARN_ON(1); 3805 return; 3806 } 3807 cmd->jiffies_at_free = get_jiffies_64(); 3808 target_free_tag(sess->se_sess, &cmd->se_cmd); 3809 } 3810 EXPORT_SYMBOL(qlt_free_cmd); 3811 3812 /* 3813 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3814 */ 3815 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3816 struct qla_tgt_cmd *cmd, uint32_t status) 3817 { 3818 int term = 0; 3819 struct scsi_qla_host *vha = qpair->vha; 3820 3821 if (cmd->se_cmd.prot_op) 3822 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3823 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3824 "se_cmd=%p tag[%x] op %#x/%s", 3825 cmd->lba, cmd->lba, 3826 cmd->num_blks, &cmd->se_cmd, 3827 cmd->atio.u.isp24.exchange_addr, 3828 cmd->se_cmd.prot_op, 3829 prot_op_str(cmd->se_cmd.prot_op)); 3830 3831 if (ctio != NULL) { 3832 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3833 3834 term = !(c->flags & 3835 cpu_to_le16(OF_TERM_EXCH)); 3836 } else 3837 term = 1; 3838 3839 if (term) 3840 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3841 3842 return term; 3843 } 3844 3845 3846 /* ha->hardware_lock supposed to be held on entry */ 3847 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3848 struct rsp_que *rsp, uint32_t handle, void *ctio) 3849 { 3850 void *cmd = NULL; 3851 struct req_que *req; 3852 int qid = GET_QID(handle); 3853 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3854 3855 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3856 return NULL; 3857 3858 if (qid == rsp->req->id) { 3859 req = rsp->req; 3860 } else if (vha->hw->req_q_map[qid]) { 3861 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3862 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3863 vha->vp_idx, rsp->id, handle); 3864 req = vha->hw->req_q_map[qid]; 3865 } else { 3866 return NULL; 3867 } 3868 3869 h &= QLA_CMD_HANDLE_MASK; 3870 3871 if (h != QLA_TGT_NULL_HANDLE) { 3872 if (unlikely(h >= req->num_outstanding_cmds)) { 3873 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3874 "qla_target(%d): Wrong handle %x received\n", 3875 vha->vp_idx, handle); 3876 return NULL; 3877 } 3878 3879 cmd = (void *) req->outstanding_cmds[h]; 3880 if (unlikely(cmd == NULL)) { 3881 ql_dbg(ql_dbg_async, vha, 0xe053, 3882 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3883 vha->vp_idx, handle, req->id, rsp->id); 3884 return NULL; 3885 } 3886 req->outstanding_cmds[h] = NULL; 3887 } else if (ctio != NULL) { 3888 /* We can't get loop ID from CTIO7 */ 3889 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3890 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3891 "support NULL handles\n", vha->vp_idx); 3892 return NULL; 3893 } 3894 3895 return cmd; 3896 } 3897 3898 /* 3899 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3900 */ 3901 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3902 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3903 { 3904 struct qla_hw_data *ha = vha->hw; 3905 struct se_cmd *se_cmd; 3906 struct qla_tgt_cmd *cmd; 3907 struct qla_qpair *qpair = rsp->qpair; 3908 3909 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3910 /* That could happen only in case of an error/reset/abort */ 3911 if (status != CTIO_SUCCESS) { 3912 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3913 "Intermediate CTIO received" 3914 " (status %x)\n", status); 3915 } 3916 return; 3917 } 3918 3919 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3920 if (cmd == NULL) 3921 return; 3922 3923 se_cmd = &cmd->se_cmd; 3924 cmd->cmd_sent_to_fw = 0; 3925 3926 qlt_unmap_sg(vha, cmd); 3927 3928 if (unlikely(status != CTIO_SUCCESS)) { 3929 switch (status & 0xFFFF) { 3930 case CTIO_INVALID_RX_ID: 3931 if (printk_ratelimit()) 3932 dev_info(&vha->hw->pdev->dev, 3933 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3934 vha->vp_idx, cmd->atio.u.isp24.attr, 3935 ((cmd->ctio_flags >> 9) & 0xf), 3936 cmd->ctio_flags); 3937 3938 break; 3939 case CTIO_LIP_RESET: 3940 case CTIO_TARGET_RESET: 3941 case CTIO_ABORTED: 3942 /* driver request abort via Terminate exchange */ 3943 case CTIO_TIMEOUT: 3944 /* They are OK */ 3945 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3946 "qla_target(%d): CTIO with " 3947 "status %#x received, state %x, se_cmd %p, " 3948 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3949 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3950 status, cmd->state, se_cmd); 3951 break; 3952 3953 case CTIO_PORT_LOGGED_OUT: 3954 case CTIO_PORT_UNAVAILABLE: 3955 { 3956 int logged_out = 3957 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3958 3959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3960 "qla_target(%d): CTIO with %s status %x " 3961 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3962 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3963 status, cmd->state, se_cmd); 3964 3965 if (logged_out && cmd->sess) { 3966 /* 3967 * Session is already logged out, but we need 3968 * to notify initiator, who's not aware of this 3969 */ 3970 cmd->sess->send_els_logo = 1; 3971 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3972 "%s %d %8phC post del sess\n", 3973 __func__, __LINE__, cmd->sess->port_name); 3974 3975 qlt_schedule_sess_for_deletion(cmd->sess); 3976 } 3977 break; 3978 } 3979 case CTIO_DIF_ERROR: { 3980 struct ctio_crc_from_fw *crc = 3981 (struct ctio_crc_from_fw *)ctio; 3982 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3983 "qla_target(%d): CTIO with DIF_ERROR status %x " 3984 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3985 "expect_dif[0x%llx]\n", 3986 vha->vp_idx, status, cmd->state, se_cmd, 3987 *((u64 *)&crc->actual_dif[0]), 3988 *((u64 *)&crc->expected_dif[0])); 3989 3990 qlt_handle_dif_error(qpair, cmd, ctio); 3991 return; 3992 } 3993 default: 3994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3995 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3996 vha->vp_idx, status, cmd->state, se_cmd); 3997 break; 3998 } 3999 4000 4001 /* "cmd->aborted" means 4002 * cmd is already aborted/terminated, we don't 4003 * need to terminate again. The exchange is already 4004 * cleaned up/freed at FW level. Just cleanup at driver 4005 * level. 4006 */ 4007 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4008 (!cmd->aborted)) { 4009 cmd->trc_flags |= TRC_CTIO_ERR; 4010 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4011 return; 4012 } 4013 } 4014 4015 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4016 cmd->trc_flags |= TRC_CTIO_DONE; 4017 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4018 cmd->state = QLA_TGT_STATE_DATA_IN; 4019 4020 if (status == CTIO_SUCCESS) 4021 cmd->write_data_transferred = 1; 4022 4023 ha->tgt.tgt_ops->handle_data(cmd); 4024 return; 4025 } else if (cmd->aborted) { 4026 cmd->trc_flags |= TRC_CTIO_ABORTED; 4027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4028 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4029 } else { 4030 cmd->trc_flags |= TRC_CTIO_STRANGE; 4031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4032 "qla_target(%d): A command in state (%d) should " 4033 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4034 } 4035 4036 if (unlikely(status != CTIO_SUCCESS) && 4037 !cmd->aborted) { 4038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4039 dump_stack(); 4040 } 4041 4042 ha->tgt.tgt_ops->free_cmd(cmd); 4043 } 4044 4045 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4046 uint8_t task_codes) 4047 { 4048 int fcp_task_attr; 4049 4050 switch (task_codes) { 4051 case ATIO_SIMPLE_QUEUE: 4052 fcp_task_attr = TCM_SIMPLE_TAG; 4053 break; 4054 case ATIO_HEAD_OF_QUEUE: 4055 fcp_task_attr = TCM_HEAD_TAG; 4056 break; 4057 case ATIO_ORDERED_QUEUE: 4058 fcp_task_attr = TCM_ORDERED_TAG; 4059 break; 4060 case ATIO_ACA_QUEUE: 4061 fcp_task_attr = TCM_ACA_TAG; 4062 break; 4063 case ATIO_UNTAGGED: 4064 fcp_task_attr = TCM_SIMPLE_TAG; 4065 break; 4066 default: 4067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4068 "qla_target: unknown task code %x, use ORDERED instead\n", 4069 task_codes); 4070 fcp_task_attr = TCM_ORDERED_TAG; 4071 break; 4072 } 4073 4074 return fcp_task_attr; 4075 } 4076 4077 /* 4078 * Process context for I/O path into tcm_qla2xxx code 4079 */ 4080 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4081 { 4082 scsi_qla_host_t *vha = cmd->vha; 4083 struct qla_hw_data *ha = vha->hw; 4084 struct fc_port *sess = cmd->sess; 4085 struct atio_from_isp *atio = &cmd->atio; 4086 unsigned char *cdb; 4087 unsigned long flags; 4088 uint32_t data_length; 4089 int ret, fcp_task_attr, data_dir, bidi = 0; 4090 struct qla_qpair *qpair = cmd->qpair; 4091 4092 cmd->cmd_in_wq = 0; 4093 cmd->trc_flags |= TRC_DO_WORK; 4094 4095 if (cmd->aborted) { 4096 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4097 "cmd with tag %u is aborted\n", 4098 cmd->atio.u.isp24.exchange_addr); 4099 goto out_term; 4100 } 4101 4102 spin_lock_init(&cmd->cmd_lock); 4103 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4104 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4105 4106 if (atio->u.isp24.fcp_cmnd.rddata && 4107 atio->u.isp24.fcp_cmnd.wrdata) { 4108 bidi = 1; 4109 data_dir = DMA_TO_DEVICE; 4110 } else if (atio->u.isp24.fcp_cmnd.rddata) 4111 data_dir = DMA_FROM_DEVICE; 4112 else if (atio->u.isp24.fcp_cmnd.wrdata) 4113 data_dir = DMA_TO_DEVICE; 4114 else 4115 data_dir = DMA_NONE; 4116 4117 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4118 atio->u.isp24.fcp_cmnd.task_attr); 4119 data_length = get_datalen_for_atio(atio); 4120 4121 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4122 fcp_task_attr, data_dir, bidi); 4123 if (ret != 0) 4124 goto out_term; 4125 /* 4126 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4127 */ 4128 ha->tgt.tgt_ops->put_sess(sess); 4129 return; 4130 4131 out_term: 4132 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4133 /* 4134 * cmd has not sent to target yet, so pass NULL as the second 4135 * argument to qlt_send_term_exchange() and free the memory here. 4136 */ 4137 cmd->trc_flags |= TRC_DO_WORK_ERR; 4138 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4139 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4140 4141 qlt_decr_num_pend_cmds(vha); 4142 target_free_tag(sess->se_sess, &cmd->se_cmd); 4143 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4144 4145 ha->tgt.tgt_ops->put_sess(sess); 4146 } 4147 4148 static void qlt_do_work(struct work_struct *work) 4149 { 4150 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4151 scsi_qla_host_t *vha = cmd->vha; 4152 unsigned long flags; 4153 4154 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4155 list_del(&cmd->cmd_list); 4156 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4157 4158 __qlt_do_work(cmd); 4159 } 4160 4161 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4162 { 4163 unsigned long flags; 4164 struct qla_hw_data *ha = vha->hw; 4165 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4166 void *node; 4167 u64 key = 0; 4168 4169 ql_log(ql_log_info, vha, 0x706c, 4170 "User update Number of Active Qpairs %d\n", 4171 ha->tgt.num_act_qpairs); 4172 4173 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4174 4175 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4176 btree_remove64(&tgt->lun_qpair_map, key); 4177 4178 ha->base_qpair->lun_cnt = 0; 4179 for (key = 0; key < ha->max_qpairs; key++) 4180 if (ha->queue_pair_map[key]) 4181 ha->queue_pair_map[key]->lun_cnt = 0; 4182 4183 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4184 } 4185 4186 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4187 struct qla_tgt_cmd *cmd) 4188 { 4189 struct qla_qpair *qpair, *qp; 4190 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4191 struct qla_qpair_hint *h; 4192 4193 if (vha->flags.qpairs_available) { 4194 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4195 if (unlikely(!h)) { 4196 /* spread lun to qpair ratio evently */ 4197 int lcnt = 0, rc; 4198 struct scsi_qla_host *base_vha = 4199 pci_get_drvdata(vha->hw->pdev); 4200 4201 qpair = vha->hw->base_qpair; 4202 if (qpair->lun_cnt == 0) { 4203 qpair->lun_cnt++; 4204 h = qla_qpair_to_hint(tgt, qpair); 4205 BUG_ON(!h); 4206 rc = btree_insert64(&tgt->lun_qpair_map, 4207 cmd->unpacked_lun, h, GFP_ATOMIC); 4208 if (rc) { 4209 qpair->lun_cnt--; 4210 ql_log(ql_log_info, vha, 0xd037, 4211 "Unable to insert lun %llx into lun_qpair_map\n", 4212 cmd->unpacked_lun); 4213 } 4214 goto out; 4215 } else { 4216 lcnt = qpair->lun_cnt; 4217 } 4218 4219 h = NULL; 4220 list_for_each_entry(qp, &base_vha->qp_list, 4221 qp_list_elem) { 4222 if (qp->lun_cnt == 0) { 4223 qp->lun_cnt++; 4224 h = qla_qpair_to_hint(tgt, qp); 4225 BUG_ON(!h); 4226 rc = btree_insert64(&tgt->lun_qpair_map, 4227 cmd->unpacked_lun, h, GFP_ATOMIC); 4228 if (rc) { 4229 qp->lun_cnt--; 4230 ql_log(ql_log_info, vha, 0xd038, 4231 "Unable to insert lun %llx into lun_qpair_map\n", 4232 cmd->unpacked_lun); 4233 } 4234 qpair = qp; 4235 goto out; 4236 } else { 4237 if (qp->lun_cnt < lcnt) { 4238 lcnt = qp->lun_cnt; 4239 qpair = qp; 4240 continue; 4241 } 4242 } 4243 } 4244 BUG_ON(!qpair); 4245 qpair->lun_cnt++; 4246 h = qla_qpair_to_hint(tgt, qpair); 4247 BUG_ON(!h); 4248 rc = btree_insert64(&tgt->lun_qpair_map, 4249 cmd->unpacked_lun, h, GFP_ATOMIC); 4250 if (rc) { 4251 qpair->lun_cnt--; 4252 ql_log(ql_log_info, vha, 0xd039, 4253 "Unable to insert lun %llx into lun_qpair_map\n", 4254 cmd->unpacked_lun); 4255 } 4256 } 4257 } else { 4258 h = &tgt->qphints[0]; 4259 } 4260 out: 4261 cmd->qpair = h->qpair; 4262 cmd->se_cmd.cpuid = h->cpuid; 4263 } 4264 4265 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4266 struct fc_port *sess, 4267 struct atio_from_isp *atio) 4268 { 4269 struct se_session *se_sess = sess->se_sess; 4270 struct qla_tgt_cmd *cmd; 4271 int tag, cpu; 4272 4273 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 4274 if (tag < 0) 4275 return NULL; 4276 4277 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4278 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4279 cmd->cmd_type = TYPE_TGT_CMD; 4280 memcpy(&cmd->atio, atio, sizeof(*atio)); 4281 cmd->state = QLA_TGT_STATE_NEW; 4282 cmd->tgt = vha->vha_tgt.qla_tgt; 4283 qlt_incr_num_pend_cmds(vha); 4284 cmd->vha = vha; 4285 cmd->se_cmd.map_tag = tag; 4286 cmd->se_cmd.map_cpu = cpu; 4287 cmd->sess = sess; 4288 cmd->loop_id = sess->loop_id; 4289 cmd->conf_compl_supported = sess->conf_compl_supported; 4290 4291 cmd->trc_flags = 0; 4292 cmd->jiffies_at_alloc = get_jiffies_64(); 4293 4294 cmd->unpacked_lun = scsilun_to_int( 4295 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4296 qlt_assign_qpair(vha, cmd); 4297 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4298 cmd->vp_idx = vha->vp_idx; 4299 4300 return cmd; 4301 } 4302 4303 /* ha->hardware_lock supposed to be held on entry */ 4304 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4305 struct atio_from_isp *atio) 4306 { 4307 struct qla_hw_data *ha = vha->hw; 4308 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4309 struct fc_port *sess; 4310 struct qla_tgt_cmd *cmd; 4311 unsigned long flags; 4312 port_id_t id; 4313 4314 if (unlikely(tgt->tgt_stop)) { 4315 ql_dbg(ql_dbg_io, vha, 0x3061, 4316 "New command while device %p is shutting down\n", tgt); 4317 return -ENODEV; 4318 } 4319 4320 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4321 if (IS_SW_RESV_ADDR(id)) 4322 return -EBUSY; 4323 4324 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4325 if (unlikely(!sess)) 4326 return -EFAULT; 4327 4328 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4329 * session deletion, but it's still in sess_del_work wq */ 4330 if (sess->deleted) { 4331 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4332 "New command while old session %p is being deleted\n", 4333 sess); 4334 return -EFAULT; 4335 } 4336 4337 /* 4338 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4339 */ 4340 if (!kref_get_unless_zero(&sess->sess_kref)) { 4341 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4342 "%s: kref_get fail, %8phC oxid %x \n", 4343 __func__, sess->port_name, 4344 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4345 return -EFAULT; 4346 } 4347 4348 cmd = qlt_get_tag(vha, sess, atio); 4349 if (!cmd) { 4350 ql_dbg(ql_dbg_io, vha, 0x3062, 4351 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4352 ha->tgt.tgt_ops->put_sess(sess); 4353 return -EBUSY; 4354 } 4355 4356 cmd->cmd_in_wq = 1; 4357 cmd->trc_flags |= TRC_NEW_CMD; 4358 4359 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4360 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4361 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4362 4363 INIT_WORK(&cmd->work, qlt_do_work); 4364 if (vha->flags.qpairs_available) { 4365 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4366 } else if (ha->msix_count) { 4367 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4368 queue_work_on(smp_processor_id(), qla_tgt_wq, 4369 &cmd->work); 4370 else 4371 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4372 &cmd->work); 4373 } else { 4374 queue_work(qla_tgt_wq, &cmd->work); 4375 } 4376 4377 return 0; 4378 } 4379 4380 /* ha->hardware_lock supposed to be held on entry */ 4381 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4382 int fn, void *iocb, int flags) 4383 { 4384 struct scsi_qla_host *vha = sess->vha; 4385 struct qla_hw_data *ha = vha->hw; 4386 struct qla_tgt_mgmt_cmd *mcmd; 4387 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4388 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4389 4390 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4391 if (!mcmd) { 4392 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4393 "qla_target(%d): Allocation of management " 4394 "command failed, some commands and their data could " 4395 "leak\n", vha->vp_idx); 4396 return -ENOMEM; 4397 } 4398 memset(mcmd, 0, sizeof(*mcmd)); 4399 mcmd->sess = sess; 4400 4401 if (iocb) { 4402 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4403 sizeof(mcmd->orig_iocb.imm_ntfy)); 4404 } 4405 mcmd->tmr_func = fn; 4406 mcmd->flags = flags; 4407 mcmd->reset_count = ha->base_qpair->chip_reset; 4408 mcmd->qpair = h->qpair; 4409 mcmd->vha = vha; 4410 mcmd->se_cmd.cpuid = h->cpuid; 4411 mcmd->unpacked_lun = lun; 4412 4413 switch (fn) { 4414 case QLA_TGT_LUN_RESET: 4415 case QLA_TGT_CLEAR_TS: 4416 case QLA_TGT_ABORT_TS: 4417 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4418 /* fall through */ 4419 case QLA_TGT_CLEAR_ACA: 4420 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4421 mcmd->qpair = h->qpair; 4422 mcmd->se_cmd.cpuid = h->cpuid; 4423 break; 4424 4425 case QLA_TGT_TARGET_RESET: 4426 case QLA_TGT_NEXUS_LOSS_SESS: 4427 case QLA_TGT_NEXUS_LOSS: 4428 case QLA_TGT_ABORT_ALL: 4429 default: 4430 /* no-op */ 4431 break; 4432 } 4433 4434 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4435 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4436 &mcmd->work); 4437 4438 return 0; 4439 } 4440 4441 /* ha->hardware_lock supposed to be held on entry */ 4442 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4443 { 4444 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4445 struct qla_hw_data *ha = vha->hw; 4446 struct fc_port *sess; 4447 u64 unpacked_lun; 4448 int fn; 4449 unsigned long flags; 4450 4451 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4452 4453 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4454 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4455 a->u.isp24.fcp_hdr.s_id); 4456 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4457 4458 unpacked_lun = 4459 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4460 4461 if (sess == NULL || sess->deleted) 4462 return -EFAULT; 4463 4464 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4465 } 4466 4467 /* ha->hardware_lock supposed to be held on entry */ 4468 static int __qlt_abort_task(struct scsi_qla_host *vha, 4469 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4470 { 4471 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4472 struct qla_hw_data *ha = vha->hw; 4473 struct qla_tgt_mgmt_cmd *mcmd; 4474 u64 unpacked_lun; 4475 int rc; 4476 4477 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4478 if (mcmd == NULL) { 4479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4480 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4481 vha->vp_idx, __func__); 4482 return -ENOMEM; 4483 } 4484 memset(mcmd, 0, sizeof(*mcmd)); 4485 4486 mcmd->sess = sess; 4487 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4488 sizeof(mcmd->orig_iocb.imm_ntfy)); 4489 4490 unpacked_lun = 4491 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4492 mcmd->reset_count = ha->base_qpair->chip_reset; 4493 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4494 mcmd->qpair = ha->base_qpair; 4495 4496 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4497 le16_to_cpu(iocb->u.isp2x.seq_id)); 4498 if (rc != 0) { 4499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4500 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4501 vha->vp_idx, rc); 4502 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4503 return -EFAULT; 4504 } 4505 4506 return 0; 4507 } 4508 4509 /* ha->hardware_lock supposed to be held on entry */ 4510 static int qlt_abort_task(struct scsi_qla_host *vha, 4511 struct imm_ntfy_from_isp *iocb) 4512 { 4513 struct qla_hw_data *ha = vha->hw; 4514 struct fc_port *sess; 4515 int loop_id; 4516 unsigned long flags; 4517 4518 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4519 4520 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4521 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4522 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4523 4524 if (sess == NULL) { 4525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4526 "qla_target(%d): task abort for unexisting " 4527 "session\n", vha->vp_idx); 4528 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4529 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4530 } 4531 4532 return __qlt_abort_task(vha, iocb, sess); 4533 } 4534 4535 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4536 { 4537 if (rc != MBS_COMMAND_COMPLETE) { 4538 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4539 "%s: se_sess %p / sess %p from" 4540 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4541 " LOGO failed: %#x\n", 4542 __func__, 4543 fcport->se_sess, 4544 fcport, 4545 fcport->port_name, fcport->loop_id, 4546 fcport->d_id.b.domain, fcport->d_id.b.area, 4547 fcport->d_id.b.al_pa, rc); 4548 } 4549 4550 fcport->logout_completed = 1; 4551 } 4552 4553 /* 4554 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4555 * 4556 * Schedules sessions with matching port_id/loop_id but different wwn for 4557 * deletion. Returns existing session with matching wwn if present. 4558 * Null otherwise. 4559 */ 4560 struct fc_port * 4561 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4562 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4563 { 4564 struct fc_port *sess = NULL, *other_sess; 4565 uint64_t other_wwn; 4566 4567 *conflict_sess = NULL; 4568 4569 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4570 4571 other_wwn = wwn_to_u64(other_sess->port_name); 4572 4573 if (wwn == other_wwn) { 4574 WARN_ON(sess); 4575 sess = other_sess; 4576 continue; 4577 } 4578 4579 /* find other sess with nport_id collision */ 4580 if (port_id.b24 == other_sess->d_id.b24) { 4581 if (loop_id != other_sess->loop_id) { 4582 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4583 "Invalidating sess %p loop_id %d wwn %llx.\n", 4584 other_sess, other_sess->loop_id, other_wwn); 4585 4586 /* 4587 * logout_on_delete is set by default, but another 4588 * session that has the same s_id/loop_id combo 4589 * might have cleared it when requested this session 4590 * deletion, so don't touch it 4591 */ 4592 qlt_schedule_sess_for_deletion(other_sess); 4593 } else { 4594 /* 4595 * Another wwn used to have our s_id/loop_id 4596 * kill the session, but don't free the loop_id 4597 */ 4598 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, 4599 "Invalidating sess %p loop_id %d wwn %llx.\n", 4600 other_sess, other_sess->loop_id, other_wwn); 4601 4602 other_sess->keep_nport_handle = 1; 4603 if (other_sess->disc_state != DSC_DELETED) 4604 *conflict_sess = other_sess; 4605 qlt_schedule_sess_for_deletion(other_sess); 4606 } 4607 continue; 4608 } 4609 4610 /* find other sess with nport handle collision */ 4611 if ((loop_id == other_sess->loop_id) && 4612 (loop_id != FC_NO_LOOP_ID)) { 4613 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4614 "Invalidating sess %p loop_id %d wwn %llx.\n", 4615 other_sess, other_sess->loop_id, other_wwn); 4616 4617 /* Same loop_id but different s_id 4618 * Ok to kill and logout */ 4619 qlt_schedule_sess_for_deletion(other_sess); 4620 } 4621 } 4622 4623 return sess; 4624 } 4625 4626 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4627 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4628 { 4629 struct qla_tgt_sess_op *op; 4630 struct qla_tgt_cmd *cmd; 4631 uint32_t key; 4632 int count = 0; 4633 unsigned long flags; 4634 4635 key = (((u32)s_id->b.domain << 16) | 4636 ((u32)s_id->b.area << 8) | 4637 ((u32)s_id->b.al_pa)); 4638 4639 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4640 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4641 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4642 4643 if (op_key == key) { 4644 op->aborted = true; 4645 count++; 4646 } 4647 } 4648 4649 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4650 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4651 4652 if (op_key == key) { 4653 op->aborted = true; 4654 count++; 4655 } 4656 } 4657 4658 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4659 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4660 4661 if (cmd_key == key) { 4662 cmd->aborted = 1; 4663 count++; 4664 } 4665 } 4666 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4667 4668 return count; 4669 } 4670 4671 static int qlt_handle_login(struct scsi_qla_host *vha, 4672 struct imm_ntfy_from_isp *iocb) 4673 { 4674 struct fc_port *sess = NULL, *conflict_sess = NULL; 4675 uint64_t wwn; 4676 port_id_t port_id; 4677 uint16_t loop_id, wd3_lo; 4678 int res = 0; 4679 struct qlt_plogi_ack_t *pla; 4680 unsigned long flags; 4681 4682 lockdep_assert_held(&vha->hw->hardware_lock); 4683 4684 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4685 4686 port_id.b.domain = iocb->u.isp24.port_id[2]; 4687 port_id.b.area = iocb->u.isp24.port_id[1]; 4688 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4689 port_id.b.rsvd_1 = 0; 4690 4691 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4692 4693 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4694 abort_cmds_for_s_id(vha, &port_id); 4695 4696 if (wwn) { 4697 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4698 sess = qlt_find_sess_invalidate_other(vha, wwn, 4699 port_id, loop_id, &conflict_sess); 4700 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4701 } else { 4702 ql_dbg(ql_dbg_disc, vha, 0xffff, 4703 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4704 __func__, __LINE__, loop_id, port_id.b24); 4705 qlt_send_term_imm_notif(vha, iocb, 1); 4706 goto out; 4707 } 4708 4709 if (IS_SW_RESV_ADDR(port_id)) { 4710 res = 1; 4711 goto out; 4712 } 4713 4714 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4715 if (!pla) { 4716 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4717 "%s %d %8phC Term INOT due to mem alloc fail", 4718 __func__, __LINE__, 4719 iocb->u.isp24.port_name); 4720 qlt_send_term_imm_notif(vha, iocb, 1); 4721 goto out; 4722 } 4723 4724 if (conflict_sess) { 4725 conflict_sess->login_gen++; 4726 qlt_plogi_ack_link(vha, pla, conflict_sess, 4727 QLT_PLOGI_LINK_CONFLICT); 4728 } 4729 4730 if (!sess) { 4731 pla->ref_count++; 4732 ql_dbg(ql_dbg_disc, vha, 0xffff, 4733 "%s %d %8phC post new sess\n", 4734 __func__, __LINE__, iocb->u.isp24.port_name); 4735 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4736 qla24xx_post_newsess_work(vha, &port_id, 4737 iocb->u.isp24.port_name, 4738 iocb->u.isp24.u.plogi.node_name, 4739 pla, FC4_TYPE_UNKNOWN); 4740 else 4741 qla24xx_post_newsess_work(vha, &port_id, 4742 iocb->u.isp24.port_name, NULL, 4743 pla, FC4_TYPE_UNKNOWN); 4744 4745 goto out; 4746 } 4747 4748 if (sess->disc_state == DSC_UPD_FCPORT) { 4749 u16 sec; 4750 4751 /* 4752 * Remote port registration is still going on from 4753 * previous login. Allow it to finish before we 4754 * accept the new login. 4755 */ 4756 sess->next_disc_state = DSC_DELETE_PEND; 4757 sec = jiffies_to_msecs(jiffies - 4758 sess->jiffies_at_registration) / 1000; 4759 if (sess->sec_since_registration < sec && sec && 4760 !(sec % 5)) { 4761 sess->sec_since_registration = sec; 4762 ql_dbg(ql_dbg_disc, vha, 0xffff, 4763 "%s %8phC - Slow Rport registration (%d Sec)\n", 4764 __func__, sess->port_name, sec); 4765 } 4766 4767 if (!conflict_sess) { 4768 list_del(&pla->list); 4769 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4770 } 4771 4772 qlt_send_term_imm_notif(vha, iocb, 1); 4773 goto out; 4774 } 4775 4776 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4777 sess->d_id = port_id; 4778 sess->login_gen++; 4779 4780 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4781 sess->fw_login_state = DSC_LS_PRLI_PEND; 4782 sess->local = 0; 4783 sess->loop_id = loop_id; 4784 sess->d_id = port_id; 4785 sess->fw_login_state = DSC_LS_PRLI_PEND; 4786 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4787 4788 if (wd3_lo & BIT_7) 4789 sess->conf_compl_supported = 1; 4790 4791 if ((wd3_lo & BIT_4) == 0) 4792 sess->port_type = FCT_INITIATOR; 4793 else 4794 sess->port_type = FCT_TARGET; 4795 4796 } else 4797 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4798 4799 4800 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4801 "%s %d %8phC DS %d\n", 4802 __func__, __LINE__, sess->port_name, sess->disc_state); 4803 4804 switch (sess->disc_state) { 4805 case DSC_DELETED: 4806 case DSC_LOGIN_PEND: 4807 qlt_plogi_ack_unref(vha, pla); 4808 break; 4809 4810 default: 4811 /* 4812 * Under normal circumstances we want to release nport handle 4813 * during LOGO process to avoid nport handle leaks inside FW. 4814 * The exception is when LOGO is done while another PLOGI with 4815 * the same nport handle is waiting as might be the case here. 4816 * Note: there is always a possibily of a race where session 4817 * deletion has already started for other reasons (e.g. ACL 4818 * removal) and now PLOGI arrives: 4819 * 1. if PLOGI arrived in FW after nport handle has been freed, 4820 * FW must have assigned this PLOGI a new/same handle and we 4821 * can proceed ACK'ing it as usual when session deletion 4822 * completes. 4823 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4824 * bit reached it, the handle has now been released. We'll 4825 * get an error when we ACK this PLOGI. Nothing will be sent 4826 * back to initiator. Initiator should eventually retry 4827 * PLOGI and situation will correct itself. 4828 */ 4829 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4830 (sess->d_id.b24 == port_id.b24)); 4831 4832 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4833 "%s %d %8phC post del sess\n", 4834 __func__, __LINE__, sess->port_name); 4835 4836 4837 qlt_schedule_sess_for_deletion(sess); 4838 break; 4839 } 4840 out: 4841 return res; 4842 } 4843 4844 /* 4845 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4846 */ 4847 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4848 struct imm_ntfy_from_isp *iocb) 4849 { 4850 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4851 struct qla_hw_data *ha = vha->hw; 4852 struct fc_port *sess = NULL, *conflict_sess = NULL; 4853 uint64_t wwn; 4854 port_id_t port_id; 4855 uint16_t loop_id; 4856 uint16_t wd3_lo; 4857 int res = 0; 4858 unsigned long flags; 4859 4860 lockdep_assert_held(&ha->hardware_lock); 4861 4862 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4863 4864 port_id.b.domain = iocb->u.isp24.port_id[2]; 4865 port_id.b.area = iocb->u.isp24.port_id[1]; 4866 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4867 port_id.b.rsvd_1 = 0; 4868 4869 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4870 4871 ql_dbg(ql_dbg_disc, vha, 0xf026, 4872 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4873 vha->vp_idx, iocb->u.isp24.port_id[2], 4874 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4875 iocb->u.isp24.status_subcode, loop_id, 4876 iocb->u.isp24.port_name); 4877 4878 /* res = 1 means ack at the end of thread 4879 * res = 0 means ack async/later. 4880 */ 4881 switch (iocb->u.isp24.status_subcode) { 4882 case ELS_PLOGI: 4883 res = qlt_handle_login(vha, iocb); 4884 break; 4885 4886 case ELS_PRLI: 4887 if (N2N_TOPO(ha)) { 4888 sess = qla2x00_find_fcport_by_wwpn(vha, 4889 iocb->u.isp24.port_name, 1); 4890 4891 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4892 ql_dbg(ql_dbg_disc, vha, 0xffff, 4893 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4894 __func__, __LINE__, 4895 iocb->u.isp24.port_name); 4896 qlt_send_term_imm_notif(vha, iocb, 1); 4897 break; 4898 } 4899 4900 res = qlt_handle_login(vha, iocb); 4901 break; 4902 } 4903 4904 if (IS_SW_RESV_ADDR(port_id)) { 4905 res = 1; 4906 break; 4907 } 4908 4909 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4910 4911 if (wwn) { 4912 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4913 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4914 loop_id, &conflict_sess); 4915 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4916 } 4917 4918 if (conflict_sess) { 4919 switch (conflict_sess->disc_state) { 4920 case DSC_DELETED: 4921 case DSC_DELETE_PEND: 4922 break; 4923 default: 4924 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4925 "PRLI with conflicting sess %p port %8phC\n", 4926 conflict_sess, conflict_sess->port_name); 4927 conflict_sess->fw_login_state = 4928 DSC_LS_PORT_UNAVAIL; 4929 qlt_send_term_imm_notif(vha, iocb, 1); 4930 res = 0; 4931 break; 4932 } 4933 } 4934 4935 if (sess != NULL) { 4936 bool delete = false; 4937 int sec; 4938 4939 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4940 switch (sess->fw_login_state) { 4941 case DSC_LS_PLOGI_PEND: 4942 case DSC_LS_PLOGI_COMP: 4943 case DSC_LS_PRLI_COMP: 4944 break; 4945 default: 4946 delete = true; 4947 break; 4948 } 4949 4950 switch (sess->disc_state) { 4951 case DSC_UPD_FCPORT: 4952 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4953 flags); 4954 4955 sec = jiffies_to_msecs(jiffies - 4956 sess->jiffies_at_registration)/1000; 4957 if (sess->sec_since_registration < sec && sec && 4958 !(sec % 5)) { 4959 sess->sec_since_registration = sec; 4960 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4961 "%s %8phC : Slow Rport registration(%d Sec)\n", 4962 __func__, sess->port_name, sec); 4963 } 4964 qlt_send_term_imm_notif(vha, iocb, 1); 4965 return 0; 4966 4967 case DSC_LOGIN_PEND: 4968 case DSC_GPDB: 4969 case DSC_LOGIN_COMPLETE: 4970 case DSC_ADISC: 4971 delete = false; 4972 break; 4973 default: 4974 break; 4975 } 4976 4977 if (delete) { 4978 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4979 flags); 4980 /* 4981 * Impatient initiator sent PRLI before last 4982 * PLOGI could finish. Will force him to re-try, 4983 * while last one finishes. 4984 */ 4985 ql_log(ql_log_warn, sess->vha, 0xf095, 4986 "sess %p PRLI received, before plogi ack.\n", 4987 sess); 4988 qlt_send_term_imm_notif(vha, iocb, 1); 4989 res = 0; 4990 break; 4991 } 4992 4993 /* 4994 * This shouldn't happen under normal circumstances, 4995 * since we have deleted the old session during PLOGI 4996 */ 4997 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4998 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4999 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5000 5001 sess->local = 0; 5002 sess->loop_id = loop_id; 5003 sess->d_id = port_id; 5004 sess->fw_login_state = DSC_LS_PRLI_PEND; 5005 5006 if (wd3_lo & BIT_7) 5007 sess->conf_compl_supported = 1; 5008 5009 if ((wd3_lo & BIT_4) == 0) 5010 sess->port_type = FCT_INITIATOR; 5011 else 5012 sess->port_type = FCT_TARGET; 5013 5014 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5015 } 5016 res = 1; /* send notify ack */ 5017 5018 /* Make session global (not used in fabric mode) */ 5019 if (ha->current_topology != ISP_CFG_F) { 5020 if (sess) { 5021 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5022 "%s %d %8phC post nack\n", 5023 __func__, __LINE__, sess->port_name); 5024 qla24xx_post_nack_work(vha, sess, iocb, 5025 SRB_NACK_PRLI); 5026 res = 0; 5027 } else { 5028 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5029 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5030 qla2xxx_wake_dpc(vha); 5031 } 5032 } else { 5033 if (sess) { 5034 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5035 "%s %d %8phC post nack\n", 5036 __func__, __LINE__, sess->port_name); 5037 qla24xx_post_nack_work(vha, sess, iocb, 5038 SRB_NACK_PRLI); 5039 res = 0; 5040 } 5041 } 5042 break; 5043 5044 case ELS_TPRLO: 5045 if (le16_to_cpu(iocb->u.isp24.flags) & 5046 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5047 loop_id = 0xFFFF; 5048 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5049 res = 1; 5050 break; 5051 } 5052 /* fall through */ 5053 case ELS_LOGO: 5054 case ELS_PRLO: 5055 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5056 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5057 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5058 5059 if (sess) { 5060 sess->login_gen++; 5061 sess->fw_login_state = DSC_LS_LOGO_PEND; 5062 sess->logo_ack_needed = 1; 5063 memcpy(sess->iocb, iocb, IOCB_SIZE); 5064 } 5065 5066 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5067 5068 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5069 "%s: logo %llx res %d sess %p ", 5070 __func__, wwn, res, sess); 5071 if (res == 0) { 5072 /* 5073 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5074 * for LOGO_ACK & sess delete 5075 */ 5076 BUG_ON(!sess); 5077 res = 0; 5078 } else { 5079 /* cmd did not go to upper layer. */ 5080 if (sess) { 5081 qlt_schedule_sess_for_deletion(sess); 5082 res = 0; 5083 } 5084 /* else logo will be ack */ 5085 } 5086 break; 5087 case ELS_PDISC: 5088 case ELS_ADISC: 5089 { 5090 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5091 5092 if (tgt->link_reinit_iocb_pending) { 5093 qlt_send_notify_ack(ha->base_qpair, 5094 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5095 tgt->link_reinit_iocb_pending = 0; 5096 } 5097 5098 sess = qla2x00_find_fcport_by_wwpn(vha, 5099 iocb->u.isp24.port_name, 1); 5100 if (sess) { 5101 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5102 "sess %p lid %d|%d DS %d LS %d\n", 5103 sess, sess->loop_id, loop_id, 5104 sess->disc_state, sess->fw_login_state); 5105 } 5106 5107 res = 1; /* send notify ack */ 5108 break; 5109 } 5110 5111 case ELS_FLOGI: /* should never happen */ 5112 default: 5113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5114 "qla_target(%d): Unsupported ELS command %x " 5115 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5116 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5117 break; 5118 } 5119 5120 ql_dbg(ql_dbg_disc, vha, 0xf026, 5121 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5122 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5123 5124 return res; 5125 } 5126 5127 /* 5128 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5129 */ 5130 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5131 struct imm_ntfy_from_isp *iocb) 5132 { 5133 struct qla_hw_data *ha = vha->hw; 5134 uint32_t add_flags = 0; 5135 int send_notify_ack = 1; 5136 uint16_t status; 5137 5138 lockdep_assert_held(&ha->hardware_lock); 5139 5140 status = le16_to_cpu(iocb->u.isp2x.status); 5141 switch (status) { 5142 case IMM_NTFY_LIP_RESET: 5143 { 5144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5145 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5146 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5147 iocb->u.isp24.status_subcode); 5148 5149 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5150 send_notify_ack = 0; 5151 break; 5152 } 5153 5154 case IMM_NTFY_LIP_LINK_REINIT: 5155 { 5156 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5157 5158 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5159 "qla_target(%d): LINK REINIT (loop %#x, " 5160 "subcode %x)\n", vha->vp_idx, 5161 le16_to_cpu(iocb->u.isp24.nport_handle), 5162 iocb->u.isp24.status_subcode); 5163 if (tgt->link_reinit_iocb_pending) { 5164 qlt_send_notify_ack(ha->base_qpair, 5165 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5166 } 5167 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5168 tgt->link_reinit_iocb_pending = 1; 5169 /* 5170 * QLogic requires to wait after LINK REINIT for possible 5171 * PDISC or ADISC ELS commands 5172 */ 5173 send_notify_ack = 0; 5174 break; 5175 } 5176 5177 case IMM_NTFY_PORT_LOGOUT: 5178 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5179 "qla_target(%d): Port logout (loop " 5180 "%#x, subcode %x)\n", vha->vp_idx, 5181 le16_to_cpu(iocb->u.isp24.nport_handle), 5182 iocb->u.isp24.status_subcode); 5183 5184 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5185 send_notify_ack = 0; 5186 /* The sessions will be cleared in the callback, if needed */ 5187 break; 5188 5189 case IMM_NTFY_GLBL_TPRLO: 5190 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5191 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5192 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5193 send_notify_ack = 0; 5194 /* The sessions will be cleared in the callback, if needed */ 5195 break; 5196 5197 case IMM_NTFY_PORT_CONFIG: 5198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5199 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5200 status); 5201 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5202 send_notify_ack = 0; 5203 /* The sessions will be cleared in the callback, if needed */ 5204 break; 5205 5206 case IMM_NTFY_GLBL_LOGO: 5207 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5208 "qla_target(%d): Link failure detected\n", 5209 vha->vp_idx); 5210 /* I_T nexus loss */ 5211 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5212 send_notify_ack = 0; 5213 break; 5214 5215 case IMM_NTFY_IOCB_OVERFLOW: 5216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5217 "qla_target(%d): Cannot provide requested " 5218 "capability (IOCB overflowed the immediate notify " 5219 "resource count)\n", vha->vp_idx); 5220 break; 5221 5222 case IMM_NTFY_ABORT_TASK: 5223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5224 "qla_target(%d): Abort Task (S %08x I %#x -> " 5225 "L %#x)\n", vha->vp_idx, 5226 le16_to_cpu(iocb->u.isp2x.seq_id), 5227 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5228 le16_to_cpu(iocb->u.isp2x.lun)); 5229 if (qlt_abort_task(vha, iocb) == 0) 5230 send_notify_ack = 0; 5231 break; 5232 5233 case IMM_NTFY_RESOURCE: 5234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5235 "qla_target(%d): Out of resources, host %ld\n", 5236 vha->vp_idx, vha->host_no); 5237 break; 5238 5239 case IMM_NTFY_MSG_RX: 5240 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5241 "qla_target(%d): Immediate notify task %x\n", 5242 vha->vp_idx, iocb->u.isp2x.task_flags); 5243 break; 5244 5245 case IMM_NTFY_ELS: 5246 if (qlt_24xx_handle_els(vha, iocb) == 0) 5247 send_notify_ack = 0; 5248 break; 5249 default: 5250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5251 "qla_target(%d): Received unknown immediate " 5252 "notify status %x\n", vha->vp_idx, status); 5253 break; 5254 } 5255 5256 if (send_notify_ack) 5257 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5258 0, 0); 5259 } 5260 5261 /* 5262 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5263 * This function sends busy to ISP 2xxx or 24xx. 5264 */ 5265 static int __qlt_send_busy(struct qla_qpair *qpair, 5266 struct atio_from_isp *atio, uint16_t status) 5267 { 5268 struct scsi_qla_host *vha = qpair->vha; 5269 struct ctio7_to_24xx *ctio24; 5270 struct qla_hw_data *ha = vha->hw; 5271 request_t *pkt; 5272 struct fc_port *sess = NULL; 5273 unsigned long flags; 5274 u16 temp; 5275 port_id_t id; 5276 5277 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5278 5279 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5280 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5281 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5282 if (!sess) { 5283 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5284 return 0; 5285 } 5286 /* Sending marker isn't necessary, since we called from ISR */ 5287 5288 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5289 if (!pkt) { 5290 ql_dbg(ql_dbg_io, vha, 0x3063, 5291 "qla_target(%d): %s failed: unable to allocate " 5292 "request packet", vha->vp_idx, __func__); 5293 return -ENOMEM; 5294 } 5295 5296 qpair->tgt_counters.num_q_full_sent++; 5297 pkt->entry_count = 1; 5298 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5299 5300 ctio24 = (struct ctio7_to_24xx *)pkt; 5301 ctio24->entry_type = CTIO_TYPE7; 5302 ctio24->nport_handle = sess->loop_id; 5303 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5304 ctio24->vp_index = vha->vp_idx; 5305 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5306 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5307 temp = (atio->u.isp24.attr << 9) | 5308 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5309 CTIO7_FLAGS_DONT_RET_CTIO; 5310 ctio24->u.status1.flags = cpu_to_le16(temp); 5311 /* 5312 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5313 * if the explicit conformation is used. 5314 */ 5315 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5316 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5317 5318 ctio24->u.status1.residual = get_datalen_for_atio(atio); 5319 5320 if (ctio24->u.status1.residual != 0) 5321 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 5322 5323 /* Memory Barrier */ 5324 wmb(); 5325 if (qpair->reqq_start_iocbs) 5326 qpair->reqq_start_iocbs(qpair); 5327 else 5328 qla2x00_start_iocbs(vha, qpair->req); 5329 return 0; 5330 } 5331 5332 /* 5333 * This routine is used to allocate a command for either a QFull condition 5334 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5335 * out previously. 5336 */ 5337 static void 5338 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5339 struct atio_from_isp *atio, uint16_t status, int qfull) 5340 { 5341 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5342 struct qla_hw_data *ha = vha->hw; 5343 struct fc_port *sess; 5344 struct se_session *se_sess; 5345 struct qla_tgt_cmd *cmd; 5346 int tag, cpu; 5347 unsigned long flags; 5348 5349 if (unlikely(tgt->tgt_stop)) { 5350 ql_dbg(ql_dbg_io, vha, 0x300a, 5351 "New command while device %p is shutting down\n", tgt); 5352 return; 5353 } 5354 5355 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5356 vha->hw->tgt.num_qfull_cmds_dropped++; 5357 if (vha->hw->tgt.num_qfull_cmds_dropped > 5358 vha->qla_stats.stat_max_qfull_cmds_dropped) 5359 vha->qla_stats.stat_max_qfull_cmds_dropped = 5360 vha->hw->tgt.num_qfull_cmds_dropped; 5361 5362 ql_dbg(ql_dbg_io, vha, 0x3068, 5363 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5364 vha->vp_idx, __func__, 5365 vha->hw->tgt.num_qfull_cmds_dropped); 5366 5367 qlt_chk_exch_leak_thresh_hold(vha); 5368 return; 5369 } 5370 5371 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5372 (vha, atio->u.isp24.fcp_hdr.s_id); 5373 if (!sess) 5374 return; 5375 5376 se_sess = sess->se_sess; 5377 5378 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 5379 if (tag < 0) { 5380 ql_dbg(ql_dbg_io, vha, 0x3009, 5381 "qla_target(%d): %s: Allocation of cmd failed\n", 5382 vha->vp_idx, __func__); 5383 5384 vha->hw->tgt.num_qfull_cmds_dropped++; 5385 if (vha->hw->tgt.num_qfull_cmds_dropped > 5386 vha->qla_stats.stat_max_qfull_cmds_dropped) 5387 vha->qla_stats.stat_max_qfull_cmds_dropped = 5388 vha->hw->tgt.num_qfull_cmds_dropped; 5389 5390 qlt_chk_exch_leak_thresh_hold(vha); 5391 return; 5392 } 5393 5394 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5395 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5396 5397 qlt_incr_num_pend_cmds(vha); 5398 INIT_LIST_HEAD(&cmd->cmd_list); 5399 memcpy(&cmd->atio, atio, sizeof(*atio)); 5400 5401 cmd->tgt = vha->vha_tgt.qla_tgt; 5402 cmd->vha = vha; 5403 cmd->reset_count = ha->base_qpair->chip_reset; 5404 cmd->q_full = 1; 5405 cmd->qpair = ha->base_qpair; 5406 cmd->se_cmd.map_cpu = cpu; 5407 5408 if (qfull) { 5409 cmd->q_full = 1; 5410 /* NOTE: borrowing the state field to carry the status */ 5411 cmd->state = status; 5412 } else 5413 cmd->term_exchg = 1; 5414 5415 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5416 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5417 5418 vha->hw->tgt.num_qfull_cmds_alloc++; 5419 if (vha->hw->tgt.num_qfull_cmds_alloc > 5420 vha->qla_stats.stat_max_qfull_cmds_alloc) 5421 vha->qla_stats.stat_max_qfull_cmds_alloc = 5422 vha->hw->tgt.num_qfull_cmds_alloc; 5423 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5424 } 5425 5426 int 5427 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5428 { 5429 struct scsi_qla_host *vha = qpair->vha; 5430 struct qla_hw_data *ha = vha->hw; 5431 unsigned long flags; 5432 struct qla_tgt_cmd *cmd, *tcmd; 5433 struct list_head free_list, q_full_list; 5434 int rc = 0; 5435 5436 if (list_empty(&ha->tgt.q_full_list)) 5437 return 0; 5438 5439 INIT_LIST_HEAD(&free_list); 5440 INIT_LIST_HEAD(&q_full_list); 5441 5442 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5443 if (list_empty(&ha->tgt.q_full_list)) { 5444 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5445 return 0; 5446 } 5447 5448 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5449 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5450 5451 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5452 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5453 if (cmd->q_full) 5454 /* cmd->state is a borrowed field to hold status */ 5455 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5456 else if (cmd->term_exchg) 5457 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5458 5459 if (rc == -ENOMEM) 5460 break; 5461 5462 if (cmd->q_full) 5463 ql_dbg(ql_dbg_io, vha, 0x3006, 5464 "%s: busy sent for ox_id[%04x]\n", __func__, 5465 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5466 else if (cmd->term_exchg) 5467 ql_dbg(ql_dbg_io, vha, 0x3007, 5468 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5469 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5470 else 5471 ql_dbg(ql_dbg_io, vha, 0x3008, 5472 "%s: Unexpected cmd in QFull list %p\n", __func__, 5473 cmd); 5474 5475 list_del(&cmd->cmd_list); 5476 list_add_tail(&cmd->cmd_list, &free_list); 5477 5478 /* piggy back on hardware_lock for protection */ 5479 vha->hw->tgt.num_qfull_cmds_alloc--; 5480 } 5481 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5482 5483 cmd = NULL; 5484 5485 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5486 list_del(&cmd->cmd_list); 5487 /* This cmd was never sent to TCM. There is no need 5488 * to schedule free or call free_cmd 5489 */ 5490 qlt_free_cmd(cmd); 5491 } 5492 5493 if (!list_empty(&q_full_list)) { 5494 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5495 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5496 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5497 } 5498 5499 return rc; 5500 } 5501 5502 static void 5503 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5504 uint16_t status) 5505 { 5506 int rc = 0; 5507 struct scsi_qla_host *vha = qpair->vha; 5508 5509 rc = __qlt_send_busy(qpair, atio, status); 5510 if (rc == -ENOMEM) 5511 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5512 } 5513 5514 static int 5515 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5516 struct atio_from_isp *atio, uint8_t ha_locked) 5517 { 5518 struct qla_hw_data *ha = vha->hw; 5519 unsigned long flags; 5520 5521 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5522 return 0; 5523 5524 if (!ha_locked) 5525 spin_lock_irqsave(&ha->hardware_lock, flags); 5526 qlt_send_busy(qpair, atio, qla_sam_status); 5527 if (!ha_locked) 5528 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5529 5530 return 1; 5531 } 5532 5533 /* ha->hardware_lock supposed to be held on entry */ 5534 /* called via callback from qla2xxx */ 5535 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5536 struct atio_from_isp *atio, uint8_t ha_locked) 5537 { 5538 struct qla_hw_data *ha = vha->hw; 5539 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5540 int rc; 5541 unsigned long flags = 0; 5542 5543 if (unlikely(tgt == NULL)) { 5544 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5545 "ATIO pkt, but no tgt (ha %p)", ha); 5546 return; 5547 } 5548 /* 5549 * In tgt_stop mode we also should allow all requests to pass. 5550 * Otherwise, some commands can stuck. 5551 */ 5552 5553 tgt->atio_irq_cmd_count++; 5554 5555 switch (atio->u.raw.entry_type) { 5556 case ATIO_TYPE7: 5557 if (unlikely(atio->u.isp24.exchange_addr == 5558 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5559 ql_dbg(ql_dbg_io, vha, 0x3065, 5560 "qla_target(%d): ATIO_TYPE7 " 5561 "received with UNKNOWN exchange address, " 5562 "sending QUEUE_FULL\n", vha->vp_idx); 5563 if (!ha_locked) 5564 spin_lock_irqsave(&ha->hardware_lock, flags); 5565 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5566 if (!ha_locked) 5567 spin_unlock_irqrestore(&ha->hardware_lock, 5568 flags); 5569 break; 5570 } 5571 5572 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5573 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5574 atio, ha_locked); 5575 if (rc != 0) { 5576 tgt->atio_irq_cmd_count--; 5577 return; 5578 } 5579 rc = qlt_handle_cmd_for_atio(vha, atio); 5580 } else { 5581 rc = qlt_handle_task_mgmt(vha, atio); 5582 } 5583 if (unlikely(rc != 0)) { 5584 if (!ha_locked) 5585 spin_lock_irqsave(&ha->hardware_lock, flags); 5586 switch (rc) { 5587 case -ENODEV: 5588 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5589 "qla_target: Unable to send command to target\n"); 5590 break; 5591 case -EBADF: 5592 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5593 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5594 qlt_send_term_exchange(ha->base_qpair, NULL, 5595 atio, 1, 0); 5596 break; 5597 case -EBUSY: 5598 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5599 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5600 vha->vp_idx); 5601 qlt_send_busy(ha->base_qpair, atio, 5602 tc_sam_status); 5603 break; 5604 default: 5605 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5606 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5607 vha->vp_idx); 5608 qlt_send_busy(ha->base_qpair, atio, 5609 qla_sam_status); 5610 break; 5611 } 5612 if (!ha_locked) 5613 spin_unlock_irqrestore(&ha->hardware_lock, 5614 flags); 5615 } 5616 break; 5617 5618 case IMMED_NOTIFY_TYPE: 5619 { 5620 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5621 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5622 "qla_target(%d): Received ATIO packet %x " 5623 "with error status %x\n", vha->vp_idx, 5624 atio->u.raw.entry_type, 5625 atio->u.isp2x.entry_status); 5626 break; 5627 } 5628 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5629 5630 if (!ha_locked) 5631 spin_lock_irqsave(&ha->hardware_lock, flags); 5632 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5633 if (!ha_locked) 5634 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5635 break; 5636 } 5637 5638 default: 5639 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5640 "qla_target(%d): Received unknown ATIO atio " 5641 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5642 break; 5643 } 5644 5645 tgt->atio_irq_cmd_count--; 5646 } 5647 5648 /* 5649 * qpair lock is assume to be held 5650 * rc = 0 : send terminate & abts respond 5651 * rc != 0: do not send term & abts respond 5652 */ 5653 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5654 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5655 { 5656 struct qla_hw_data *ha = vha->hw; 5657 int rc = 0; 5658 5659 /* 5660 * Detect unresolved exchange. If the same ABTS is unable 5661 * to terminate an existing command and the same ABTS loops 5662 * between FW & Driver, then force FW dump. Under 1 jiff, 5663 * we should see multiple loops. 5664 */ 5665 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5666 qpair->retry_term_jiff == jiffies) { 5667 /* found existing exchange */ 5668 qpair->retry_term_cnt++; 5669 if (qpair->retry_term_cnt >= 5) { 5670 rc = EIO; 5671 qpair->retry_term_cnt = 0; 5672 ql_log(ql_log_warn, vha, 0xffff, 5673 "Unable to send ABTS Respond. Dumping firmware.\n"); 5674 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5675 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5676 5677 if (qpair == ha->base_qpair) 5678 ha->isp_ops->fw_dump(vha, 1); 5679 else 5680 ha->isp_ops->fw_dump(vha, 0); 5681 5682 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5683 qla2xxx_wake_dpc(vha); 5684 } 5685 } else if (qpair->retry_term_jiff != jiffies) { 5686 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5687 qpair->retry_term_cnt = 0; 5688 qpair->retry_term_jiff = jiffies; 5689 } 5690 5691 return rc; 5692 } 5693 5694 5695 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5696 struct rsp_que *rsp, response_t *pkt) 5697 { 5698 struct abts_resp_from_24xx_fw *entry = 5699 (struct abts_resp_from_24xx_fw *)pkt; 5700 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5701 struct qla_tgt_mgmt_cmd *mcmd; 5702 struct qla_hw_data *ha = vha->hw; 5703 5704 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5705 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5706 ql_dbg(ql_dbg_async, vha, 0xe064, 5707 "qla_target(%d): ABTS Comp without mcmd\n", 5708 vha->vp_idx); 5709 return; 5710 } 5711 5712 if (mcmd) 5713 vha = mcmd->vha; 5714 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5715 5716 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5717 "ABTS_RESP_24XX: compl_status %x\n", 5718 entry->compl_status); 5719 5720 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5721 if ((entry->error_subcode1 == 0x1E) && 5722 (entry->error_subcode2 == 0)) { 5723 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5724 ha->tgt.tgt_ops->free_mcmd(mcmd); 5725 return; 5726 } 5727 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5728 pkt, mcmd); 5729 } else { 5730 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5731 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5732 vha->vp_idx, entry->compl_status, 5733 entry->error_subcode1, 5734 entry->error_subcode2); 5735 ha->tgt.tgt_ops->free_mcmd(mcmd); 5736 } 5737 } else if (mcmd) { 5738 ha->tgt.tgt_ops->free_mcmd(mcmd); 5739 } 5740 } 5741 5742 /* ha->hardware_lock supposed to be held on entry */ 5743 /* called via callback from qla2xxx */ 5744 static void qlt_response_pkt(struct scsi_qla_host *vha, 5745 struct rsp_que *rsp, response_t *pkt) 5746 { 5747 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5748 5749 if (unlikely(tgt == NULL)) { 5750 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5751 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5752 vha->vp_idx, pkt->entry_type, vha->hw); 5753 return; 5754 } 5755 5756 /* 5757 * In tgt_stop mode we also should allow all requests to pass. 5758 * Otherwise, some commands can stuck. 5759 */ 5760 5761 switch (pkt->entry_type) { 5762 case CTIO_CRC2: 5763 case CTIO_TYPE7: 5764 { 5765 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5766 5767 qlt_do_ctio_completion(vha, rsp, entry->handle, 5768 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5769 entry); 5770 break; 5771 } 5772 5773 case ACCEPT_TGT_IO_TYPE: 5774 { 5775 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5776 int rc; 5777 5778 if (atio->u.isp2x.status != 5779 cpu_to_le16(ATIO_CDB_VALID)) { 5780 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5781 "qla_target(%d): ATIO with error " 5782 "status %x received\n", vha->vp_idx, 5783 le16_to_cpu(atio->u.isp2x.status)); 5784 break; 5785 } 5786 5787 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5788 if (rc != 0) 5789 return; 5790 5791 rc = qlt_handle_cmd_for_atio(vha, atio); 5792 if (unlikely(rc != 0)) { 5793 switch (rc) { 5794 case -ENODEV: 5795 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5796 "qla_target: Unable to send command to target\n"); 5797 break; 5798 case -EBADF: 5799 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5800 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5801 qlt_send_term_exchange(rsp->qpair, NULL, 5802 atio, 1, 0); 5803 break; 5804 case -EBUSY: 5805 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5806 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5807 vha->vp_idx); 5808 qlt_send_busy(rsp->qpair, atio, 5809 tc_sam_status); 5810 break; 5811 default: 5812 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5813 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5814 vha->vp_idx); 5815 qlt_send_busy(rsp->qpair, atio, 5816 qla_sam_status); 5817 break; 5818 } 5819 } 5820 } 5821 break; 5822 5823 case CONTINUE_TGT_IO_TYPE: 5824 { 5825 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5826 5827 qlt_do_ctio_completion(vha, rsp, entry->handle, 5828 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5829 entry); 5830 break; 5831 } 5832 5833 case CTIO_A64_TYPE: 5834 { 5835 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5836 5837 qlt_do_ctio_completion(vha, rsp, entry->handle, 5838 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5839 entry); 5840 break; 5841 } 5842 5843 case IMMED_NOTIFY_TYPE: 5844 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5845 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5846 break; 5847 5848 case NOTIFY_ACK_TYPE: 5849 if (tgt->notify_ack_expected > 0) { 5850 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5851 5852 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5853 "NOTIFY_ACK seq %08x status %x\n", 5854 le16_to_cpu(entry->u.isp2x.seq_id), 5855 le16_to_cpu(entry->u.isp2x.status)); 5856 tgt->notify_ack_expected--; 5857 if (entry->u.isp2x.status != 5858 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5859 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5860 "qla_target(%d): NOTIFY_ACK " 5861 "failed %x\n", vha->vp_idx, 5862 le16_to_cpu(entry->u.isp2x.status)); 5863 } 5864 } else { 5865 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5866 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5867 vha->vp_idx); 5868 } 5869 break; 5870 5871 case ABTS_RECV_24XX: 5872 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5873 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5874 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5875 break; 5876 5877 case ABTS_RESP_24XX: 5878 if (tgt->abts_resp_expected > 0) { 5879 qlt_handle_abts_completion(vha, rsp, pkt); 5880 } else { 5881 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5882 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5883 "received\n", vha->vp_idx); 5884 } 5885 break; 5886 5887 default: 5888 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5889 "qla_target(%d): Received unknown response pkt " 5890 "type %x\n", vha->vp_idx, pkt->entry_type); 5891 break; 5892 } 5893 5894 } 5895 5896 /* 5897 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5898 */ 5899 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5900 uint16_t *mailbox) 5901 { 5902 struct qla_hw_data *ha = vha->hw; 5903 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5904 int login_code; 5905 5906 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5907 return; 5908 5909 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5910 IS_QLA2100(ha)) 5911 return; 5912 /* 5913 * In tgt_stop mode we also should allow all requests to pass. 5914 * Otherwise, some commands can stuck. 5915 */ 5916 5917 5918 switch (code) { 5919 case MBA_RESET: /* Reset */ 5920 case MBA_SYSTEM_ERR: /* System Error */ 5921 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5922 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5924 "qla_target(%d): System error async event %#x " 5925 "occurred", vha->vp_idx, code); 5926 break; 5927 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5928 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5929 break; 5930 5931 case MBA_LOOP_UP: 5932 { 5933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5934 "qla_target(%d): Async LOOP_UP occurred " 5935 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5936 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5937 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5938 if (tgt->link_reinit_iocb_pending) { 5939 qlt_send_notify_ack(ha->base_qpair, 5940 (void *)&tgt->link_reinit_iocb, 5941 0, 0, 0, 0, 0, 0); 5942 tgt->link_reinit_iocb_pending = 0; 5943 } 5944 break; 5945 } 5946 5947 case MBA_LIP_OCCURRED: 5948 case MBA_LOOP_DOWN: 5949 case MBA_LIP_RESET: 5950 case MBA_RSCN_UPDATE: 5951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5952 "qla_target(%d): Async event %#x occurred " 5953 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5954 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5955 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5956 break; 5957 5958 case MBA_REJECTED_FCP_CMD: 5959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5960 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5961 vha->vp_idx, 5962 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5963 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5964 5965 if (le16_to_cpu(mailbox[3]) == 1) { 5966 /* exchange starvation. */ 5967 vha->hw->exch_starvation++; 5968 if (vha->hw->exch_starvation > 5) { 5969 ql_log(ql_log_warn, vha, 0xd03a, 5970 "Exchange starvation-. Resetting RISC\n"); 5971 5972 vha->hw->exch_starvation = 0; 5973 if (IS_P3P_TYPE(vha->hw)) 5974 set_bit(FCOE_CTX_RESET_NEEDED, 5975 &vha->dpc_flags); 5976 else 5977 set_bit(ISP_ABORT_NEEDED, 5978 &vha->dpc_flags); 5979 qla2xxx_wake_dpc(vha); 5980 } 5981 } 5982 break; 5983 5984 case MBA_PORT_UPDATE: 5985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5986 "qla_target(%d): Port update async event %#x " 5987 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5988 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5989 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5990 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5991 5992 login_code = le16_to_cpu(mailbox[2]); 5993 if (login_code == 0x4) { 5994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5995 "Async MB 2: Got PLOGI Complete\n"); 5996 vha->hw->exch_starvation = 0; 5997 } else if (login_code == 0x7) 5998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5999 "Async MB 2: Port Logged Out\n"); 6000 break; 6001 default: 6002 break; 6003 } 6004 6005 } 6006 6007 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6008 uint16_t loop_id) 6009 { 6010 fc_port_t *fcport, *tfcp, *del; 6011 int rc; 6012 unsigned long flags; 6013 u8 newfcport = 0; 6014 6015 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6016 if (!fcport) { 6017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6018 "qla_target(%d): Allocation of tmp FC port failed", 6019 vha->vp_idx); 6020 return NULL; 6021 } 6022 6023 fcport->loop_id = loop_id; 6024 6025 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6026 if (rc != QLA_SUCCESS) { 6027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6028 "qla_target(%d): Failed to retrieve fcport " 6029 "information -- get_port_database() returned %x " 6030 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6031 kfree(fcport); 6032 return NULL; 6033 } 6034 6035 del = NULL; 6036 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6037 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6038 6039 if (tfcp) { 6040 tfcp->d_id = fcport->d_id; 6041 tfcp->port_type = fcport->port_type; 6042 tfcp->supported_classes = fcport->supported_classes; 6043 tfcp->flags |= fcport->flags; 6044 tfcp->scan_state = QLA_FCPORT_FOUND; 6045 6046 del = fcport; 6047 fcport = tfcp; 6048 } else { 6049 if (vha->hw->current_topology == ISP_CFG_F) 6050 fcport->flags |= FCF_FABRIC_DEVICE; 6051 6052 list_add_tail(&fcport->list, &vha->vp_fcports); 6053 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6054 vha->fcport_count++; 6055 fcport->login_gen++; 6056 fcport->disc_state = DSC_LOGIN_COMPLETE; 6057 fcport->login_succ = 1; 6058 newfcport = 1; 6059 } 6060 6061 fcport->deleted = 0; 6062 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6063 6064 switch (vha->host->active_mode) { 6065 case MODE_INITIATOR: 6066 case MODE_DUAL: 6067 if (newfcport) { 6068 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6069 qla24xx_sched_upd_fcport(fcport); 6070 } else { 6071 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6072 "%s %d %8phC post gpsc fcp_cnt %d\n", 6073 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6074 qla24xx_post_gpsc_work(vha, fcport); 6075 } 6076 } 6077 break; 6078 6079 case MODE_TARGET: 6080 default: 6081 break; 6082 } 6083 if (del) 6084 qla2x00_free_fcport(del); 6085 6086 return fcport; 6087 } 6088 6089 /* Must be called under tgt_mutex */ 6090 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6091 be_id_t s_id) 6092 { 6093 struct fc_port *sess = NULL; 6094 fc_port_t *fcport = NULL; 6095 int rc, global_resets; 6096 uint16_t loop_id = 0; 6097 6098 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6099 /* 6100 * This is Domain Controller, so it should be 6101 * OK to drop SCSI commands from it. 6102 */ 6103 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6104 "Unable to find initiator with S_ID %x:%x:%x", 6105 s_id.domain, s_id.area, s_id.al_pa); 6106 return NULL; 6107 } 6108 6109 mutex_lock(&vha->vha_tgt.tgt_mutex); 6110 6111 retry: 6112 global_resets = 6113 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6114 6115 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6116 if (rc != 0) { 6117 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6118 6119 ql_log(ql_log_info, vha, 0xf071, 6120 "qla_target(%d): Unable to find " 6121 "initiator with S_ID %x:%x:%x", 6122 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6123 6124 if (rc == -ENOENT) { 6125 qlt_port_logo_t logo; 6126 6127 logo.id = be_to_port_id(s_id); 6128 logo.cmd_count = 1; 6129 qlt_send_first_logo(vha, &logo); 6130 } 6131 6132 return NULL; 6133 } 6134 6135 fcport = qlt_get_port_database(vha, loop_id); 6136 if (!fcport) { 6137 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6138 return NULL; 6139 } 6140 6141 if (global_resets != 6142 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6144 "qla_target(%d): global reset during session discovery " 6145 "(counter was %d, new %d), retrying", vha->vp_idx, 6146 global_resets, 6147 atomic_read(&vha->vha_tgt. 6148 qla_tgt->tgt_global_resets_count)); 6149 goto retry; 6150 } 6151 6152 sess = qlt_create_sess(vha, fcport, true); 6153 6154 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6155 6156 return sess; 6157 } 6158 6159 static void qlt_abort_work(struct qla_tgt *tgt, 6160 struct qla_tgt_sess_work_param *prm) 6161 { 6162 struct scsi_qla_host *vha = tgt->vha; 6163 struct qla_hw_data *ha = vha->hw; 6164 struct fc_port *sess = NULL; 6165 unsigned long flags = 0, flags2 = 0; 6166 be_id_t s_id; 6167 int rc; 6168 6169 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6170 6171 if (tgt->tgt_stop) 6172 goto out_term2; 6173 6174 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6175 6176 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6177 if (!sess) { 6178 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6179 6180 sess = qlt_make_local_sess(vha, s_id); 6181 /* sess has got an extra creation ref */ 6182 6183 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6184 if (!sess) 6185 goto out_term2; 6186 } else { 6187 if (sess->deleted) { 6188 sess = NULL; 6189 goto out_term2; 6190 } 6191 6192 if (!kref_get_unless_zero(&sess->sess_kref)) { 6193 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6194 "%s: kref_get fail %8phC \n", 6195 __func__, sess->port_name); 6196 sess = NULL; 6197 goto out_term2; 6198 } 6199 } 6200 6201 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6202 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6203 6204 ha->tgt.tgt_ops->put_sess(sess); 6205 6206 if (rc != 0) 6207 goto out_term; 6208 return; 6209 6210 out_term2: 6211 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6212 6213 out_term: 6214 spin_lock_irqsave(&ha->hardware_lock, flags); 6215 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6216 FCP_TMF_REJECTED, false); 6217 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6218 } 6219 6220 static void qlt_tmr_work(struct qla_tgt *tgt, 6221 struct qla_tgt_sess_work_param *prm) 6222 { 6223 struct atio_from_isp *a = &prm->tm_iocb2; 6224 struct scsi_qla_host *vha = tgt->vha; 6225 struct qla_hw_data *ha = vha->hw; 6226 struct fc_port *sess; 6227 unsigned long flags; 6228 be_id_t s_id; 6229 int rc; 6230 u64 unpacked_lun; 6231 int fn; 6232 void *iocb; 6233 6234 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6235 6236 if (tgt->tgt_stop) 6237 goto out_term2; 6238 6239 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6240 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6241 if (!sess) { 6242 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6243 6244 sess = qlt_make_local_sess(vha, s_id); 6245 /* sess has got an extra creation ref */ 6246 6247 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6248 if (!sess) 6249 goto out_term2; 6250 } else { 6251 if (sess->deleted) { 6252 goto out_term2; 6253 } 6254 6255 if (!kref_get_unless_zero(&sess->sess_kref)) { 6256 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6257 "%s: kref_get fail %8phC\n", 6258 __func__, sess->port_name); 6259 goto out_term2; 6260 } 6261 } 6262 6263 iocb = a; 6264 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6265 unpacked_lun = 6266 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6267 6268 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6269 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6270 6271 ha->tgt.tgt_ops->put_sess(sess); 6272 6273 if (rc != 0) 6274 goto out_term; 6275 return; 6276 6277 out_term2: 6278 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6279 out_term: 6280 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6281 } 6282 6283 static void qlt_sess_work_fn(struct work_struct *work) 6284 { 6285 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6286 struct scsi_qla_host *vha = tgt->vha; 6287 unsigned long flags; 6288 6289 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6290 6291 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6292 while (!list_empty(&tgt->sess_works_list)) { 6293 struct qla_tgt_sess_work_param *prm = list_entry( 6294 tgt->sess_works_list.next, typeof(*prm), 6295 sess_works_list_entry); 6296 6297 /* 6298 * This work can be scheduled on several CPUs at time, so we 6299 * must delete the entry to eliminate double processing 6300 */ 6301 list_del(&prm->sess_works_list_entry); 6302 6303 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6304 6305 switch (prm->type) { 6306 case QLA_TGT_SESS_WORK_ABORT: 6307 qlt_abort_work(tgt, prm); 6308 break; 6309 case QLA_TGT_SESS_WORK_TM: 6310 qlt_tmr_work(tgt, prm); 6311 break; 6312 default: 6313 BUG_ON(1); 6314 break; 6315 } 6316 6317 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6318 6319 kfree(prm); 6320 } 6321 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6322 } 6323 6324 /* Must be called under tgt_host_action_mutex */ 6325 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6326 { 6327 struct qla_tgt *tgt; 6328 int rc, i; 6329 struct qla_qpair_hint *h; 6330 6331 if (!QLA_TGT_MODE_ENABLED()) 6332 return 0; 6333 6334 if (!IS_TGT_MODE_CAPABLE(ha)) { 6335 ql_log(ql_log_warn, base_vha, 0xe070, 6336 "This adapter does not support target mode.\n"); 6337 return 0; 6338 } 6339 6340 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6341 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6342 6343 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6344 6345 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6346 if (!tgt) { 6347 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6348 "Unable to allocate struct qla_tgt\n"); 6349 return -ENOMEM; 6350 } 6351 6352 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6353 sizeof(struct qla_qpair_hint), 6354 GFP_KERNEL); 6355 if (!tgt->qphints) { 6356 kfree(tgt); 6357 ql_log(ql_log_warn, base_vha, 0x0197, 6358 "Unable to allocate qpair hints.\n"); 6359 return -ENOMEM; 6360 } 6361 6362 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6363 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6364 6365 rc = btree_init64(&tgt->lun_qpair_map); 6366 if (rc) { 6367 kfree(tgt->qphints); 6368 kfree(tgt); 6369 ql_log(ql_log_info, base_vha, 0x0198, 6370 "Unable to initialize lun_qpair_map btree\n"); 6371 return -EIO; 6372 } 6373 h = &tgt->qphints[0]; 6374 h->qpair = ha->base_qpair; 6375 INIT_LIST_HEAD(&h->hint_elem); 6376 h->cpuid = ha->base_qpair->cpuid; 6377 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6378 6379 for (i = 0; i < ha->max_qpairs; i++) { 6380 unsigned long flags; 6381 6382 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6383 6384 h = &tgt->qphints[i + 1]; 6385 INIT_LIST_HEAD(&h->hint_elem); 6386 if (qpair) { 6387 h->qpair = qpair; 6388 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6389 list_add_tail(&h->hint_elem, &qpair->hints_list); 6390 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6391 h->cpuid = qpair->cpuid; 6392 } 6393 } 6394 6395 tgt->ha = ha; 6396 tgt->vha = base_vha; 6397 init_waitqueue_head(&tgt->waitQ); 6398 INIT_LIST_HEAD(&tgt->del_sess_list); 6399 spin_lock_init(&tgt->sess_work_lock); 6400 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6401 INIT_LIST_HEAD(&tgt->sess_works_list); 6402 atomic_set(&tgt->tgt_global_resets_count, 0); 6403 6404 base_vha->vha_tgt.qla_tgt = tgt; 6405 6406 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6407 "qla_target(%d): using 64 Bit PCI addressing", 6408 base_vha->vp_idx); 6409 /* 3 is reserved */ 6410 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6411 6412 mutex_lock(&qla_tgt_mutex); 6413 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6414 mutex_unlock(&qla_tgt_mutex); 6415 6416 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6417 ha->tgt.tgt_ops->add_target(base_vha); 6418 6419 return 0; 6420 } 6421 6422 /* Must be called under tgt_host_action_mutex */ 6423 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6424 { 6425 if (!vha->vha_tgt.qla_tgt) 6426 return 0; 6427 6428 if (vha->fc_vport) { 6429 qlt_release(vha->vha_tgt.qla_tgt); 6430 return 0; 6431 } 6432 6433 /* free left over qfull cmds */ 6434 qlt_init_term_exchange(vha); 6435 6436 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6437 vha->host_no, ha); 6438 qlt_release(vha->vha_tgt.qla_tgt); 6439 6440 return 0; 6441 } 6442 6443 void qlt_remove_target_resources(struct qla_hw_data *ha) 6444 { 6445 struct scsi_qla_host *node; 6446 u32 key = 0; 6447 6448 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6449 btree_remove32(&ha->tgt.host_map, key); 6450 6451 btree_destroy32(&ha->tgt.host_map); 6452 } 6453 6454 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6455 unsigned char *b) 6456 { 6457 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6458 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6459 put_unaligned_be64(wwpn, b); 6460 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6461 } 6462 6463 /** 6464 * qla_tgt_lport_register - register lport with external module 6465 * 6466 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6467 * @phys_wwpn: physical port WWPN 6468 * @npiv_wwpn: NPIV WWPN 6469 * @npiv_wwnn: NPIV WWNN 6470 * @callback: lport initialization callback for tcm_qla2xxx code 6471 */ 6472 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6473 u64 npiv_wwpn, u64 npiv_wwnn, 6474 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6475 { 6476 struct qla_tgt *tgt; 6477 struct scsi_qla_host *vha; 6478 struct qla_hw_data *ha; 6479 struct Scsi_Host *host; 6480 unsigned long flags; 6481 int rc; 6482 u8 b[WWN_SIZE]; 6483 6484 mutex_lock(&qla_tgt_mutex); 6485 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6486 vha = tgt->vha; 6487 ha = vha->hw; 6488 6489 host = vha->host; 6490 if (!host) 6491 continue; 6492 6493 if (!(host->hostt->supported_mode & MODE_TARGET)) 6494 continue; 6495 6496 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6497 continue; 6498 6499 spin_lock_irqsave(&ha->hardware_lock, flags); 6500 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6501 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6502 host->host_no); 6503 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6504 continue; 6505 } 6506 if (tgt->tgt_stop) { 6507 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6508 host->host_no); 6509 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6510 continue; 6511 } 6512 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6513 6514 if (!scsi_host_get(host)) { 6515 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6516 "Unable to scsi_host_get() for" 6517 " qla2xxx scsi_host\n"); 6518 continue; 6519 } 6520 qlt_lport_dump(vha, phys_wwpn, b); 6521 6522 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6523 scsi_host_put(host); 6524 continue; 6525 } 6526 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6527 if (rc != 0) 6528 scsi_host_put(host); 6529 6530 mutex_unlock(&qla_tgt_mutex); 6531 return rc; 6532 } 6533 mutex_unlock(&qla_tgt_mutex); 6534 6535 return -ENODEV; 6536 } 6537 EXPORT_SYMBOL(qlt_lport_register); 6538 6539 /** 6540 * qla_tgt_lport_deregister - Degister lport 6541 * 6542 * @vha: Registered scsi_qla_host pointer 6543 */ 6544 void qlt_lport_deregister(struct scsi_qla_host *vha) 6545 { 6546 struct qla_hw_data *ha = vha->hw; 6547 struct Scsi_Host *sh = vha->host; 6548 /* 6549 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6550 */ 6551 vha->vha_tgt.target_lport_ptr = NULL; 6552 ha->tgt.tgt_ops = NULL; 6553 /* 6554 * Release the Scsi_Host reference for the underlying qla2xxx host 6555 */ 6556 scsi_host_put(sh); 6557 } 6558 EXPORT_SYMBOL(qlt_lport_deregister); 6559 6560 /* Must be called under HW lock */ 6561 void qlt_set_mode(struct scsi_qla_host *vha) 6562 { 6563 switch (vha->qlini_mode) { 6564 case QLA2XXX_INI_MODE_DISABLED: 6565 case QLA2XXX_INI_MODE_EXCLUSIVE: 6566 vha->host->active_mode = MODE_TARGET; 6567 break; 6568 case QLA2XXX_INI_MODE_ENABLED: 6569 vha->host->active_mode = MODE_INITIATOR; 6570 break; 6571 case QLA2XXX_INI_MODE_DUAL: 6572 vha->host->active_mode = MODE_DUAL; 6573 break; 6574 default: 6575 break; 6576 } 6577 } 6578 6579 /* Must be called under HW lock */ 6580 static void qlt_clear_mode(struct scsi_qla_host *vha) 6581 { 6582 switch (vha->qlini_mode) { 6583 case QLA2XXX_INI_MODE_DISABLED: 6584 vha->host->active_mode = MODE_UNKNOWN; 6585 break; 6586 case QLA2XXX_INI_MODE_EXCLUSIVE: 6587 vha->host->active_mode = MODE_INITIATOR; 6588 break; 6589 case QLA2XXX_INI_MODE_ENABLED: 6590 case QLA2XXX_INI_MODE_DUAL: 6591 vha->host->active_mode = MODE_INITIATOR; 6592 break; 6593 default: 6594 break; 6595 } 6596 } 6597 6598 /* 6599 * qla_tgt_enable_vha - NO LOCK HELD 6600 * 6601 * host_reset, bring up w/ Target Mode Enabled 6602 */ 6603 void 6604 qlt_enable_vha(struct scsi_qla_host *vha) 6605 { 6606 struct qla_hw_data *ha = vha->hw; 6607 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6608 unsigned long flags; 6609 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6610 6611 if (!tgt) { 6612 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6613 "Unable to locate qla_tgt pointer from" 6614 " struct qla_hw_data\n"); 6615 dump_stack(); 6616 return; 6617 } 6618 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6619 return; 6620 6621 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6622 ha->tgt.num_act_qpairs = ha->max_qpairs; 6623 spin_lock_irqsave(&ha->hardware_lock, flags); 6624 tgt->tgt_stopped = 0; 6625 qlt_set_mode(vha); 6626 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6627 6628 mutex_lock(&ha->optrom_mutex); 6629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6630 "%s.\n", __func__); 6631 if (vha->vp_idx) { 6632 qla24xx_disable_vp(vha); 6633 qla24xx_enable_vp(vha); 6634 } else { 6635 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6636 qla2xxx_wake_dpc(base_vha); 6637 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6638 QLA_SUCCESS); 6639 } 6640 mutex_unlock(&ha->optrom_mutex); 6641 } 6642 EXPORT_SYMBOL(qlt_enable_vha); 6643 6644 /* 6645 * qla_tgt_disable_vha - NO LOCK HELD 6646 * 6647 * Disable Target Mode and reset the adapter 6648 */ 6649 static void qlt_disable_vha(struct scsi_qla_host *vha) 6650 { 6651 struct qla_hw_data *ha = vha->hw; 6652 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6653 unsigned long flags; 6654 6655 if (!tgt) { 6656 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6657 "Unable to locate qla_tgt pointer from" 6658 " struct qla_hw_data\n"); 6659 dump_stack(); 6660 return; 6661 } 6662 6663 spin_lock_irqsave(&ha->hardware_lock, flags); 6664 qlt_clear_mode(vha); 6665 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6666 6667 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6668 qla2xxx_wake_dpc(vha); 6669 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6670 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6671 "qla2x00_wait_for_hba_online() failed\n"); 6672 } 6673 6674 /* 6675 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6676 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6677 * members. 6678 */ 6679 void 6680 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6681 { 6682 vha->vha_tgt.qla_tgt = NULL; 6683 6684 mutex_init(&vha->vha_tgt.tgt_mutex); 6685 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6686 6687 qlt_clear_mode(vha); 6688 6689 /* 6690 * NOTE: Currently the value is kept the same for <24xx and 6691 * >=24xx ISPs. If it is necessary to change it, 6692 * the check should be added for specific ISPs, 6693 * assigning the value appropriately. 6694 */ 6695 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6696 6697 qlt_add_target(ha, vha); 6698 } 6699 6700 u8 6701 qlt_rff_id(struct scsi_qla_host *vha) 6702 { 6703 u8 fc4_feature = 0; 6704 /* 6705 * FC-4 Feature bit 0 indicates target functionality to the name server. 6706 */ 6707 if (qla_tgt_mode_enabled(vha)) { 6708 fc4_feature = BIT_0; 6709 } else if (qla_ini_mode_enabled(vha)) { 6710 fc4_feature = BIT_1; 6711 } else if (qla_dual_mode_enabled(vha)) 6712 fc4_feature = BIT_0 | BIT_1; 6713 6714 return fc4_feature; 6715 } 6716 6717 /* 6718 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6719 * @ha: HA context 6720 * 6721 * Beginning of ATIO ring has initialization control block already built 6722 * by nvram config routine. 6723 * 6724 * Returns 0 on success. 6725 */ 6726 void 6727 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6728 { 6729 struct qla_hw_data *ha = vha->hw; 6730 uint16_t cnt; 6731 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6732 6733 if (qla_ini_mode_enabled(vha)) 6734 return; 6735 6736 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6737 pkt->u.raw.signature = ATIO_PROCESSED; 6738 pkt++; 6739 } 6740 6741 } 6742 6743 /* 6744 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6745 * @ha: SCSI driver HA context 6746 */ 6747 void 6748 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6749 { 6750 struct qla_hw_data *ha = vha->hw; 6751 struct atio_from_isp *pkt; 6752 int cnt, i; 6753 6754 if (!ha->flags.fw_started) 6755 return; 6756 6757 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6758 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6759 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6760 cnt = pkt->u.raw.entry_count; 6761 6762 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6763 /* 6764 * This packet is corrupted. The header + payload 6765 * can not be trusted. There is no point in passing 6766 * it further up. 6767 */ 6768 ql_log(ql_log_warn, vha, 0xd03c, 6769 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6770 &pkt->u.isp24.fcp_hdr.s_id, 6771 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6772 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6773 6774 adjust_corrupted_atio(pkt); 6775 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6776 ha_locked, 0); 6777 } else { 6778 qlt_24xx_atio_pkt_all_vps(vha, 6779 (struct atio_from_isp *)pkt, ha_locked); 6780 } 6781 6782 for (i = 0; i < cnt; i++) { 6783 ha->tgt.atio_ring_index++; 6784 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6785 ha->tgt.atio_ring_index = 0; 6786 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6787 } else 6788 ha->tgt.atio_ring_ptr++; 6789 6790 pkt->u.raw.signature = ATIO_PROCESSED; 6791 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6792 } 6793 wmb(); 6794 } 6795 6796 /* Adjust ring index */ 6797 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6798 } 6799 6800 void 6801 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6802 { 6803 struct qla_hw_data *ha = vha->hw; 6804 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6805 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6806 6807 if (!QLA_TGT_MODE_ENABLED()) 6808 return; 6809 6810 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6811 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6812 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6813 6814 if (ha->flags.msix_enabled) { 6815 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6816 if (IS_QLA2071(ha)) { 6817 /* 4 ports Baker: Enable Interrupt Handshake */ 6818 icb->msix_atio = 0; 6819 icb->firmware_options_2 |= BIT_26; 6820 } else { 6821 icb->msix_atio = cpu_to_le16(msix->entry); 6822 icb->firmware_options_2 &= ~BIT_26; 6823 } 6824 ql_dbg(ql_dbg_init, vha, 0xf072, 6825 "Registering ICB vector 0x%x for atio que.\n", 6826 msix->entry); 6827 } 6828 } else { 6829 /* INTx|MSI */ 6830 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6831 icb->msix_atio = 0; 6832 icb->firmware_options_2 |= BIT_26; 6833 ql_dbg(ql_dbg_init, vha, 0xf072, 6834 "%s: Use INTx for ATIOQ.\n", __func__); 6835 } 6836 } 6837 } 6838 6839 void 6840 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6841 { 6842 struct qla_hw_data *ha = vha->hw; 6843 u32 tmp; 6844 6845 if (!QLA_TGT_MODE_ENABLED()) 6846 return; 6847 6848 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6849 if (!ha->tgt.saved_set) { 6850 /* We save only once */ 6851 ha->tgt.saved_exchange_count = nv->exchange_count; 6852 ha->tgt.saved_firmware_options_1 = 6853 nv->firmware_options_1; 6854 ha->tgt.saved_firmware_options_2 = 6855 nv->firmware_options_2; 6856 ha->tgt.saved_firmware_options_3 = 6857 nv->firmware_options_3; 6858 ha->tgt.saved_set = 1; 6859 } 6860 6861 if (qla_tgt_mode_enabled(vha)) 6862 nv->exchange_count = cpu_to_le16(0xFFFF); 6863 else /* dual */ 6864 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6865 6866 /* Enable target mode */ 6867 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6868 6869 /* Disable ini mode, if requested */ 6870 if (qla_tgt_mode_enabled(vha)) 6871 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6872 6873 /* Disable Full Login after LIP */ 6874 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6875 /* Enable initial LIP */ 6876 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6877 if (ql2xtgt_tape_enable) 6878 /* Enable FC Tape support */ 6879 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6880 else 6881 /* Disable FC Tape support */ 6882 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6883 6884 /* Disable Full Login after LIP */ 6885 nv->host_p &= cpu_to_le32(~BIT_10); 6886 6887 /* 6888 * clear BIT 15 explicitly as we have seen at least 6889 * a couple of instances where this was set and this 6890 * was causing the firmware to not be initialized. 6891 */ 6892 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6893 /* Enable target PRLI control */ 6894 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6895 6896 if (IS_QLA25XX(ha)) { 6897 /* Change Loop-prefer to Pt-Pt */ 6898 tmp = ~(BIT_4|BIT_5|BIT_6); 6899 nv->firmware_options_2 &= cpu_to_le32(tmp); 6900 tmp = P2P << 4; 6901 nv->firmware_options_2 |= cpu_to_le32(tmp); 6902 } 6903 } else { 6904 if (ha->tgt.saved_set) { 6905 nv->exchange_count = ha->tgt.saved_exchange_count; 6906 nv->firmware_options_1 = 6907 ha->tgt.saved_firmware_options_1; 6908 nv->firmware_options_2 = 6909 ha->tgt.saved_firmware_options_2; 6910 nv->firmware_options_3 = 6911 ha->tgt.saved_firmware_options_3; 6912 } 6913 return; 6914 } 6915 6916 if (ha->base_qpair->enable_class_2) { 6917 if (vha->flags.init_done) 6918 fc_host_supported_classes(vha->host) = 6919 FC_COS_CLASS2 | FC_COS_CLASS3; 6920 6921 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6922 } else { 6923 if (vha->flags.init_done) 6924 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6925 6926 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6927 } 6928 } 6929 6930 void 6931 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6932 struct init_cb_24xx *icb) 6933 { 6934 struct qla_hw_data *ha = vha->hw; 6935 6936 if (!QLA_TGT_MODE_ENABLED()) 6937 return; 6938 6939 if (ha->tgt.node_name_set) { 6940 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6941 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6942 } 6943 } 6944 6945 void 6946 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6947 { 6948 struct qla_hw_data *ha = vha->hw; 6949 u32 tmp; 6950 6951 if (!QLA_TGT_MODE_ENABLED()) 6952 return; 6953 6954 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6955 if (!ha->tgt.saved_set) { 6956 /* We save only once */ 6957 ha->tgt.saved_exchange_count = nv->exchange_count; 6958 ha->tgt.saved_firmware_options_1 = 6959 nv->firmware_options_1; 6960 ha->tgt.saved_firmware_options_2 = 6961 nv->firmware_options_2; 6962 ha->tgt.saved_firmware_options_3 = 6963 nv->firmware_options_3; 6964 ha->tgt.saved_set = 1; 6965 } 6966 6967 if (qla_tgt_mode_enabled(vha)) 6968 nv->exchange_count = cpu_to_le16(0xFFFF); 6969 else /* dual */ 6970 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6971 6972 /* Enable target mode */ 6973 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6974 6975 /* Disable ini mode, if requested */ 6976 if (qla_tgt_mode_enabled(vha)) 6977 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6978 /* Disable Full Login after LIP */ 6979 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6980 /* Enable initial LIP */ 6981 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6982 /* 6983 * clear BIT 15 explicitly as we have seen at 6984 * least a couple of instances where this was set 6985 * and this was causing the firmware to not be 6986 * initialized. 6987 */ 6988 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6989 if (ql2xtgt_tape_enable) 6990 /* Enable FC tape support */ 6991 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6992 else 6993 /* Disable FC tape support */ 6994 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6995 6996 /* Disable Full Login after LIP */ 6997 nv->host_p &= cpu_to_le32(~BIT_10); 6998 /* Enable target PRLI control */ 6999 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7000 7001 /* Change Loop-prefer to Pt-Pt */ 7002 tmp = ~(BIT_4|BIT_5|BIT_6); 7003 nv->firmware_options_2 &= cpu_to_le32(tmp); 7004 tmp = P2P << 4; 7005 nv->firmware_options_2 |= cpu_to_le32(tmp); 7006 } else { 7007 if (ha->tgt.saved_set) { 7008 nv->exchange_count = ha->tgt.saved_exchange_count; 7009 nv->firmware_options_1 = 7010 ha->tgt.saved_firmware_options_1; 7011 nv->firmware_options_2 = 7012 ha->tgt.saved_firmware_options_2; 7013 nv->firmware_options_3 = 7014 ha->tgt.saved_firmware_options_3; 7015 } 7016 return; 7017 } 7018 7019 if (ha->base_qpair->enable_class_2) { 7020 if (vha->flags.init_done) 7021 fc_host_supported_classes(vha->host) = 7022 FC_COS_CLASS2 | FC_COS_CLASS3; 7023 7024 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7025 } else { 7026 if (vha->flags.init_done) 7027 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7028 7029 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7030 } 7031 } 7032 7033 void 7034 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7035 struct init_cb_81xx *icb) 7036 { 7037 struct qla_hw_data *ha = vha->hw; 7038 7039 if (!QLA_TGT_MODE_ENABLED()) 7040 return; 7041 7042 if (ha->tgt.node_name_set) { 7043 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7044 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7045 } 7046 } 7047 7048 void 7049 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7050 { 7051 if (!QLA_TGT_MODE_ENABLED()) 7052 return; 7053 7054 ha->msix_count += 1; /* For ATIO Q */ 7055 } 7056 7057 7058 void 7059 qlt_modify_vp_config(struct scsi_qla_host *vha, 7060 struct vp_config_entry_24xx *vpmod) 7061 { 7062 /* enable target mode. Bit5 = 1 => disable */ 7063 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7064 vpmod->options_idx1 &= ~BIT_5; 7065 7066 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7067 if (qla_tgt_mode_enabled(vha)) 7068 vpmod->options_idx1 &= ~BIT_4; 7069 } 7070 7071 void 7072 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7073 { 7074 int rc; 7075 7076 if (!QLA_TGT_MODE_ENABLED()) 7077 return; 7078 7079 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7080 IS_QLA28XX(ha)) { 7081 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7082 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7083 } else { 7084 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7085 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7086 } 7087 7088 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7089 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7090 7091 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7092 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7093 qlt_unknown_atio_work_fn); 7094 7095 qlt_clear_mode(base_vha); 7096 7097 rc = btree_init32(&ha->tgt.host_map); 7098 if (rc) 7099 ql_log(ql_log_info, base_vha, 0xd03d, 7100 "Unable to initialize ha->host_map btree\n"); 7101 7102 qlt_update_vp_map(base_vha, SET_VP_IDX); 7103 } 7104 7105 irqreturn_t 7106 qla83xx_msix_atio_q(int irq, void *dev_id) 7107 { 7108 struct rsp_que *rsp; 7109 scsi_qla_host_t *vha; 7110 struct qla_hw_data *ha; 7111 unsigned long flags; 7112 7113 rsp = (struct rsp_que *) dev_id; 7114 ha = rsp->hw; 7115 vha = pci_get_drvdata(ha->pdev); 7116 7117 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7118 7119 qlt_24xx_process_atio_queue(vha, 0); 7120 7121 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7122 7123 return IRQ_HANDLED; 7124 } 7125 7126 static void 7127 qlt_handle_abts_recv_work(struct work_struct *work) 7128 { 7129 struct qla_tgt_sess_op *op = container_of(work, 7130 struct qla_tgt_sess_op, work); 7131 scsi_qla_host_t *vha = op->vha; 7132 struct qla_hw_data *ha = vha->hw; 7133 unsigned long flags; 7134 7135 if (qla2x00_reset_active(vha) || 7136 (op->chip_reset != ha->base_qpair->chip_reset)) 7137 return; 7138 7139 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7140 qlt_24xx_process_atio_queue(vha, 0); 7141 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7142 7143 spin_lock_irqsave(&ha->hardware_lock, flags); 7144 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7145 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7146 7147 kfree(op); 7148 } 7149 7150 void 7151 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7152 response_t *pkt) 7153 { 7154 struct qla_tgt_sess_op *op; 7155 7156 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7157 7158 if (!op) { 7159 /* do not reach for ATIO queue here. This is best effort err 7160 * recovery at this point. 7161 */ 7162 qlt_response_pkt_all_vps(vha, rsp, pkt); 7163 return; 7164 } 7165 7166 memcpy(&op->atio, pkt, sizeof(*pkt)); 7167 op->vha = vha; 7168 op->chip_reset = vha->hw->base_qpair->chip_reset; 7169 op->rsp = rsp; 7170 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7171 queue_work(qla_tgt_wq, &op->work); 7172 return; 7173 } 7174 7175 int 7176 qlt_mem_alloc(struct qla_hw_data *ha) 7177 { 7178 if (!QLA_TGT_MODE_ENABLED()) 7179 return 0; 7180 7181 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7182 sizeof(struct qla_tgt_vp_map), 7183 GFP_KERNEL); 7184 if (!ha->tgt.tgt_vp_map) 7185 return -ENOMEM; 7186 7187 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7188 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7189 &ha->tgt.atio_dma, GFP_KERNEL); 7190 if (!ha->tgt.atio_ring) { 7191 kfree(ha->tgt.tgt_vp_map); 7192 return -ENOMEM; 7193 } 7194 return 0; 7195 } 7196 7197 void 7198 qlt_mem_free(struct qla_hw_data *ha) 7199 { 7200 if (!QLA_TGT_MODE_ENABLED()) 7201 return; 7202 7203 if (ha->tgt.atio_ring) { 7204 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7205 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7206 ha->tgt.atio_dma); 7207 } 7208 ha->tgt.atio_ring = NULL; 7209 ha->tgt.atio_dma = 0; 7210 kfree(ha->tgt.tgt_vp_map); 7211 ha->tgt.tgt_vp_map = NULL; 7212 } 7213 7214 /* vport_slock to be held by the caller */ 7215 void 7216 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7217 { 7218 void *slot; 7219 u32 key; 7220 int rc; 7221 7222 if (!QLA_TGT_MODE_ENABLED()) 7223 return; 7224 7225 key = vha->d_id.b24; 7226 7227 switch (cmd) { 7228 case SET_VP_IDX: 7229 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7230 break; 7231 case SET_AL_PA: 7232 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7233 if (!slot) { 7234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7235 "Save vha in host_map %p %06x\n", vha, key); 7236 rc = btree_insert32(&vha->hw->tgt.host_map, 7237 key, vha, GFP_ATOMIC); 7238 if (rc) 7239 ql_log(ql_log_info, vha, 0xd03e, 7240 "Unable to insert s_id into host_map: %06x\n", 7241 key); 7242 return; 7243 } 7244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7245 "replace existing vha in host_map %p %06x\n", vha, key); 7246 btree_update32(&vha->hw->tgt.host_map, key, vha); 7247 break; 7248 case RESET_VP_IDX: 7249 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7250 break; 7251 case RESET_AL_PA: 7252 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7253 "clear vha in host_map %p %06x\n", vha, key); 7254 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7255 if (slot) 7256 btree_remove32(&vha->hw->tgt.host_map, key); 7257 vha->d_id.b24 = 0; 7258 break; 7259 } 7260 } 7261 7262 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7263 { 7264 7265 if (!vha->d_id.b24) { 7266 vha->d_id = id; 7267 qlt_update_vp_map(vha, SET_AL_PA); 7268 } else if (vha->d_id.b24 != id.b24) { 7269 qlt_update_vp_map(vha, RESET_AL_PA); 7270 vha->d_id = id; 7271 qlt_update_vp_map(vha, SET_AL_PA); 7272 } 7273 } 7274 7275 static int __init qlt_parse_ini_mode(void) 7276 { 7277 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7278 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7279 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7280 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7281 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7282 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7283 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7284 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7285 else 7286 return false; 7287 7288 return true; 7289 } 7290 7291 int __init qlt_init(void) 7292 { 7293 int ret; 7294 7295 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7296 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7297 7298 if (!qlt_parse_ini_mode()) { 7299 ql_log(ql_log_fatal, NULL, 0xe06b, 7300 "qlt_parse_ini_mode() failed\n"); 7301 return -EINVAL; 7302 } 7303 7304 if (!QLA_TGT_MODE_ENABLED()) 7305 return 0; 7306 7307 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7308 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7309 qla_tgt_mgmt_cmd), 0, NULL); 7310 if (!qla_tgt_mgmt_cmd_cachep) { 7311 ql_log(ql_log_fatal, NULL, 0xd04b, 7312 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7313 return -ENOMEM; 7314 } 7315 7316 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7317 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7318 0, NULL); 7319 7320 if (!qla_tgt_plogi_cachep) { 7321 ql_log(ql_log_fatal, NULL, 0xe06d, 7322 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7323 ret = -ENOMEM; 7324 goto out_mgmt_cmd_cachep; 7325 } 7326 7327 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7328 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7329 if (!qla_tgt_mgmt_cmd_mempool) { 7330 ql_log(ql_log_fatal, NULL, 0xe06e, 7331 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7332 ret = -ENOMEM; 7333 goto out_plogi_cachep; 7334 } 7335 7336 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7337 if (!qla_tgt_wq) { 7338 ql_log(ql_log_fatal, NULL, 0xe06f, 7339 "alloc_workqueue for qla_tgt_wq failed\n"); 7340 ret = -ENOMEM; 7341 goto out_cmd_mempool; 7342 } 7343 /* 7344 * Return 1 to signal that initiator-mode is being disabled 7345 */ 7346 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7347 7348 out_cmd_mempool: 7349 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7350 out_plogi_cachep: 7351 kmem_cache_destroy(qla_tgt_plogi_cachep); 7352 out_mgmt_cmd_cachep: 7353 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7354 return ret; 7355 } 7356 7357 void qlt_exit(void) 7358 { 7359 if (!QLA_TGT_MODE_ENABLED()) 7360 return; 7361 7362 destroy_workqueue(qla_tgt_wq); 7363 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7364 kmem_cache_destroy(qla_tgt_plogi_cachep); 7365 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7366 } 7367