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 <linux/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 int ql2xuctrlirq = 1; 52 module_param(ql2xuctrlirq, int, 0644); 53 MODULE_PARM_DESC(ql2xuctrlirq, 54 "User to control IRQ placement via smp_affinity." 55 "Valid with qlini_mode=disabled." 56 "1(default): enable"); 57 58 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 59 60 static int qla_sam_status = SAM_STAT_BUSY; 61 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 62 63 /* 64 * From scsi/fc/fc_fcp.h 65 */ 66 enum fcp_resp_rsp_codes { 67 FCP_TMF_CMPL = 0, 68 FCP_DATA_LEN_INVALID = 1, 69 FCP_CMND_FIELDS_INVALID = 2, 70 FCP_DATA_PARAM_MISMATCH = 3, 71 FCP_TMF_REJECTED = 4, 72 FCP_TMF_FAILED = 5, 73 FCP_TMF_INVALID_LUN = 9, 74 }; 75 76 /* 77 * fc_pri_ta from scsi/fc/fc_fcp.h 78 */ 79 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 80 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 81 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 82 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 83 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 84 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 85 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 86 87 /* 88 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 89 * must be called under HW lock and could unlock/lock it inside. 90 * It isn't an issue, since in the current implementation on the time when 91 * those functions are called: 92 * 93 * - Either context is IRQ and only IRQ handler can modify HW data, 94 * including rings related fields, 95 * 96 * - Or access to target mode variables from struct qla_tgt doesn't 97 * cross those functions boundaries, except tgt_stop, which 98 * additionally protected by irq_cmd_count. 99 */ 100 /* Predefs for callbacks handed to qla2xxx LLD */ 101 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 102 struct atio_from_isp *pkt, uint8_t); 103 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 104 response_t *pkt); 105 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 106 int fn, void *iocb, int flags); 107 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 109 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 110 struct atio_from_isp *atio, uint16_t status, int qfull); 111 static void qlt_disable_vha(struct scsi_qla_host *vha); 112 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 113 static void qlt_send_notify_ack(struct qla_qpair *qpair, 114 struct imm_ntfy_from_isp *ntfy, 115 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 116 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 117 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 118 struct imm_ntfy_from_isp *imm, int ha_locked); 119 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 120 fc_port_t *fcport, bool local); 121 void qlt_unreg_sess(struct fc_port *sess); 122 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 123 struct abts_recv_from_24xx *); 124 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 125 uint16_t); 126 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 127 static inline uint32_t qlt_make_handle(struct qla_qpair *); 128 129 /* 130 * Global Variables 131 */ 132 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 133 struct kmem_cache *qla_tgt_plogi_cachep; 134 static mempool_t *qla_tgt_mgmt_cmd_mempool; 135 static struct workqueue_struct *qla_tgt_wq; 136 static DEFINE_MUTEX(qla_tgt_mutex); 137 static LIST_HEAD(qla_tgt_glist); 138 139 static const char *prot_op_str(u32 prot_op) 140 { 141 switch (prot_op) { 142 case TARGET_PROT_NORMAL: return "NORMAL"; 143 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 144 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 145 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 146 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 147 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 148 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 149 default: return "UNKNOWN"; 150 } 151 } 152 153 /* This API intentionally takes dest as a parameter, rather than returning 154 * int value to avoid caller forgetting to issue wmb() after the store */ 155 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 156 { 157 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 158 *dest = atomic_inc_return(&base_vha->generation_tick); 159 /* memory barrier */ 160 wmb(); 161 } 162 163 /* Might release hw lock, then reaquire!! */ 164 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 165 { 166 /* Send marker if required */ 167 if (unlikely(vha->marker_needed != 0)) { 168 int rc = qla2x00_issue_marker(vha, vha_locked); 169 170 if (rc != QLA_SUCCESS) { 171 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 172 "qla_target(%d): issue_marker() failed\n", 173 vha->vp_idx); 174 } 175 return rc; 176 } 177 return QLA_SUCCESS; 178 } 179 180 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, 181 be_id_t d_id) 182 { 183 struct scsi_qla_host *host; 184 uint32_t key; 185 186 if (vha->d_id.b.area == d_id.area && 187 vha->d_id.b.domain == d_id.domain && 188 vha->d_id.b.al_pa == d_id.al_pa) 189 return vha; 190 191 key = be_to_port_id(d_id).b24; 192 193 host = btree_lookup32(&vha->hw->host_map, key); 194 if (!host) 195 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 196 "Unable to find host %06x\n", key); 197 198 return host; 199 } 200 201 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 202 { 203 unsigned long flags; 204 205 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 206 207 vha->hw->tgt.num_pend_cmds++; 208 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 209 vha->qla_stats.stat_max_pend_cmds = 210 vha->hw->tgt.num_pend_cmds; 211 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 212 } 213 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 214 { 215 unsigned long flags; 216 217 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 218 vha->hw->tgt.num_pend_cmds--; 219 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 220 } 221 222 223 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 224 struct atio_from_isp *atio, uint8_t ha_locked) 225 { 226 struct qla_tgt_sess_op *u; 227 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 228 unsigned long flags; 229 230 if (tgt->tgt_stop) { 231 ql_dbg(ql_dbg_async, vha, 0x502c, 232 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 233 vha->vp_idx); 234 goto out_term; 235 } 236 237 u = kzalloc(sizeof(*u), GFP_ATOMIC); 238 if (u == NULL) 239 goto out_term; 240 241 u->vha = vha; 242 memcpy(&u->atio, atio, sizeof(*atio)); 243 INIT_LIST_HEAD(&u->cmd_list); 244 245 spin_lock_irqsave(&vha->cmd_list_lock, flags); 246 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 247 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 248 249 schedule_delayed_work(&vha->unknown_atio_work, 1); 250 251 out: 252 return; 253 254 out_term: 255 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 256 goto out; 257 } 258 259 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 260 uint8_t ha_locked) 261 { 262 struct qla_tgt_sess_op *u, *t; 263 scsi_qla_host_t *host; 264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 265 unsigned long flags; 266 uint8_t queued = 0; 267 268 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 269 if (u->aborted) { 270 ql_dbg(ql_dbg_async, vha, 0x502e, 271 "Freeing unknown %s %p, because of Abort\n", 272 "ATIO_TYPE7", u); 273 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 274 &u->atio, ha_locked, 0); 275 goto abort; 276 } 277 278 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 279 if (host != NULL) { 280 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 281 "Requeuing unknown ATIO_TYPE7 %p\n", u); 282 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 283 } else if (tgt->tgt_stop) { 284 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 285 "Freeing unknown %s %p, because tgt is being stopped\n", 286 "ATIO_TYPE7", u); 287 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 288 &u->atio, ha_locked, 0); 289 } else { 290 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 291 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 292 if (!queued) { 293 queued = 1; 294 schedule_delayed_work(&vha->unknown_atio_work, 295 1); 296 } 297 continue; 298 } 299 300 abort: 301 spin_lock_irqsave(&vha->cmd_list_lock, flags); 302 list_del(&u->cmd_list); 303 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 304 kfree(u); 305 } 306 } 307 308 void qlt_unknown_atio_work_fn(struct work_struct *work) 309 { 310 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 311 struct scsi_qla_host, unknown_atio_work); 312 313 qlt_try_to_dequeue_unknown_atios(vha, 0); 314 } 315 316 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 317 struct atio_from_isp *atio, uint8_t ha_locked) 318 { 319 ql_dbg(ql_dbg_tgt, vha, 0xe072, 320 "%s: qla_target(%d): type %x ox_id %04x\n", 321 __func__, vha->vp_idx, atio->u.raw.entry_type, 322 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 323 324 switch (atio->u.raw.entry_type) { 325 case ATIO_TYPE7: 326 { 327 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 328 atio->u.isp24.fcp_hdr.d_id); 329 if (unlikely(NULL == host)) { 330 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 331 "qla_target(%d): Received ATIO_TYPE7 " 332 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 333 atio->u.isp24.fcp_hdr.d_id.domain, 334 atio->u.isp24.fcp_hdr.d_id.area, 335 atio->u.isp24.fcp_hdr.d_id.al_pa); 336 337 338 qlt_queue_unknown_atio(vha, atio, ha_locked); 339 break; 340 } 341 if (unlikely(!list_empty(&vha->unknown_atio_list))) 342 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 343 344 qlt_24xx_atio_pkt(host, atio, ha_locked); 345 break; 346 } 347 348 case IMMED_NOTIFY_TYPE: 349 { 350 struct scsi_qla_host *host = vha; 351 struct imm_ntfy_from_isp *entry = 352 (struct imm_ntfy_from_isp *)atio; 353 354 qlt_issue_marker(vha, ha_locked); 355 356 if ((entry->u.isp24.vp_index != 0xFF) && 357 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 358 host = qla_find_host_by_vp_idx(vha, 359 entry->u.isp24.vp_index); 360 if (unlikely(!host)) { 361 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 362 "qla_target(%d): Received " 363 "ATIO (IMMED_NOTIFY_TYPE) " 364 "with unknown vp_index %d\n", 365 vha->vp_idx, entry->u.isp24.vp_index); 366 break; 367 } 368 } 369 qlt_24xx_atio_pkt(host, atio, ha_locked); 370 break; 371 } 372 373 case VP_RPT_ID_IOCB_TYPE: 374 qla24xx_report_id_acquisition(vha, 375 (struct vp_rpt_id_entry_24xx *)atio); 376 break; 377 378 case ABTS_RECV_24XX: 379 { 380 struct abts_recv_from_24xx *entry = 381 (struct abts_recv_from_24xx *)atio; 382 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 383 entry->vp_index); 384 unsigned long flags; 385 386 if (unlikely(!host)) { 387 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 388 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 389 "received, with unknown vp_index %d\n", 390 vha->vp_idx, entry->vp_index); 391 break; 392 } 393 if (!ha_locked) 394 spin_lock_irqsave(&host->hw->hardware_lock, flags); 395 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 396 if (!ha_locked) 397 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 398 break; 399 } 400 401 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 402 403 default: 404 ql_dbg(ql_dbg_tgt, vha, 0xe040, 405 "qla_target(%d): Received unknown ATIO atio " 406 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 407 break; 408 } 409 410 return false; 411 } 412 413 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 414 struct rsp_que *rsp, response_t *pkt) 415 { 416 switch (pkt->entry_type) { 417 case CTIO_CRC2: 418 ql_dbg(ql_dbg_tgt, vha, 0xe073, 419 "qla_target(%d):%s: CRC2 Response pkt\n", 420 vha->vp_idx, __func__); 421 fallthrough; 422 case CTIO_TYPE7: 423 { 424 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 425 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 426 entry->vp_index); 427 if (unlikely(!host)) { 428 ql_dbg(ql_dbg_tgt, vha, 0xe041, 429 "qla_target(%d): Response pkt (CTIO_TYPE7) " 430 "received, with unknown vp_index %d\n", 431 vha->vp_idx, entry->vp_index); 432 break; 433 } 434 qlt_response_pkt(host, rsp, pkt); 435 break; 436 } 437 438 case IMMED_NOTIFY_TYPE: 439 { 440 struct scsi_qla_host *host; 441 struct imm_ntfy_from_isp *entry = 442 (struct imm_ntfy_from_isp *)pkt; 443 444 host = qla_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 445 if (unlikely(!host)) { 446 ql_dbg(ql_dbg_tgt, vha, 0xe042, 447 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 448 "received, with unknown vp_index %d\n", 449 vha->vp_idx, entry->u.isp24.vp_index); 450 break; 451 } 452 qlt_response_pkt(host, rsp, pkt); 453 break; 454 } 455 456 case NOTIFY_ACK_TYPE: 457 { 458 struct scsi_qla_host *host = vha; 459 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 460 461 if (0xFF != entry->u.isp24.vp_index) { 462 host = qla_find_host_by_vp_idx(vha, 463 entry->u.isp24.vp_index); 464 if (unlikely(!host)) { 465 ql_dbg(ql_dbg_tgt, vha, 0xe043, 466 "qla_target(%d): Response " 467 "pkt (NOTIFY_ACK_TYPE) " 468 "received, with unknown " 469 "vp_index %d\n", vha->vp_idx, 470 entry->u.isp24.vp_index); 471 break; 472 } 473 } 474 qlt_response_pkt(host, rsp, pkt); 475 break; 476 } 477 478 case ABTS_RECV_24XX: 479 { 480 struct abts_recv_from_24xx *entry = 481 (struct abts_recv_from_24xx *)pkt; 482 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 483 entry->vp_index); 484 if (unlikely(!host)) { 485 ql_dbg(ql_dbg_tgt, vha, 0xe044, 486 "qla_target(%d): Response pkt " 487 "(ABTS_RECV_24XX) received, with unknown " 488 "vp_index %d\n", vha->vp_idx, entry->vp_index); 489 break; 490 } 491 qlt_response_pkt(host, rsp, pkt); 492 break; 493 } 494 495 case ABTS_RESP_24XX: 496 { 497 struct abts_resp_to_24xx *entry = 498 (struct abts_resp_to_24xx *)pkt; 499 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 500 entry->vp_index); 501 if (unlikely(!host)) { 502 ql_dbg(ql_dbg_tgt, vha, 0xe045, 503 "qla_target(%d): Response pkt " 504 "(ABTS_RECV_24XX) received, with unknown " 505 "vp_index %d\n", vha->vp_idx, entry->vp_index); 506 break; 507 } 508 qlt_response_pkt(host, rsp, pkt); 509 break; 510 } 511 default: 512 qlt_response_pkt(vha, rsp, pkt); 513 break; 514 } 515 516 } 517 518 /* 519 * All qlt_plogi_ack_t operations are protected by hardware_lock 520 */ 521 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 522 struct imm_ntfy_from_isp *ntfy, int type) 523 { 524 struct qla_work_evt *e; 525 526 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 527 if (!e) 528 return QLA_FUNCTION_FAILED; 529 530 e->u.nack.fcport = fcport; 531 e->u.nack.type = type; 532 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 533 return qla2x00_post_work(vha, e); 534 } 535 536 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 537 { 538 struct scsi_qla_host *vha = sp->vha; 539 unsigned long flags; 540 541 ql_dbg(ql_dbg_disc, vha, 0x20f2, 542 "Async done-%s res %x %8phC type %d\n", 543 sp->name, res, sp->fcport->port_name, sp->type); 544 545 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 546 sp->fcport->flags &= ~FCF_ASYNC_SENT; 547 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 548 549 switch (sp->type) { 550 case SRB_NACK_PLOGI: 551 sp->fcport->login_gen++; 552 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 553 sp->fcport->logout_on_delete = 1; 554 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 555 sp->fcport->send_els_logo = 0; 556 557 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 558 ql_dbg(ql_dbg_edif, vha, 0x20ef, 559 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 560 sp->fcport->port_name); 561 qla2x00_set_fcport_disc_state(sp->fcport, 562 DSC_LOGIN_AUTH_PEND); 563 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 564 sp->fcport->d_id.b24); 565 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 566 0, sp->fcport); 567 } 568 break; 569 570 case SRB_NACK_PRLI: 571 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 572 sp->fcport->deleted = 0; 573 sp->fcport->send_els_logo = 0; 574 575 if (!sp->fcport->login_succ && 576 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 577 sp->fcport->login_succ = 1; 578 579 vha->fcport_count++; 580 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 581 qla24xx_sched_upd_fcport(sp->fcport); 582 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 583 } else { 584 sp->fcport->login_retry = 0; 585 qla2x00_set_fcport_disc_state(sp->fcport, 586 DSC_LOGIN_COMPLETE); 587 sp->fcport->deleted = 0; 588 sp->fcport->logout_on_delete = 1; 589 } 590 break; 591 592 case SRB_NACK_LOGO: 593 sp->fcport->login_gen++; 594 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 595 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 596 break; 597 } 598 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 599 600 kref_put(&sp->cmd_kref, qla2x00_sp_release); 601 } 602 603 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 604 struct imm_ntfy_from_isp *ntfy, int type) 605 { 606 int rval = QLA_FUNCTION_FAILED; 607 srb_t *sp; 608 char *c = NULL; 609 610 fcport->flags |= FCF_ASYNC_SENT; 611 switch (type) { 612 case SRB_NACK_PLOGI: 613 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 614 c = "PLOGI"; 615 if (vha->hw->flags.edif_enabled && 616 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) 617 fcport->flags |= FCF_FCSP_DEVICE; 618 break; 619 case SRB_NACK_PRLI: 620 fcport->fw_login_state = DSC_LS_PRLI_PEND; 621 fcport->deleted = 0; 622 c = "PRLI"; 623 break; 624 case SRB_NACK_LOGO: 625 fcport->fw_login_state = DSC_LS_LOGO_PEND; 626 c = "LOGO"; 627 break; 628 } 629 630 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 631 if (!sp) 632 goto done; 633 634 sp->type = type; 635 sp->name = "nack"; 636 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, 637 qla2x00_async_nack_sp_done); 638 639 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 640 641 ql_dbg(ql_dbg_disc, vha, 0x20f4, 642 "Async-%s %8phC hndl %x %s\n", 643 sp->name, fcport->port_name, sp->handle, c); 644 645 rval = qla2x00_start_sp(sp); 646 if (rval != QLA_SUCCESS) 647 goto done_free_sp; 648 649 return rval; 650 651 done_free_sp: 652 kref_put(&sp->cmd_kref, qla2x00_sp_release); 653 done: 654 fcport->flags &= ~FCF_ASYNC_SENT; 655 return rval; 656 } 657 658 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 659 { 660 fc_port_t *t; 661 662 switch (e->u.nack.type) { 663 case SRB_NACK_PRLI: 664 t = e->u.nack.fcport; 665 flush_work(&t->del_work); 666 flush_work(&t->free_work); 667 mutex_lock(&vha->vha_tgt.tgt_mutex); 668 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 669 mutex_unlock(&vha->vha_tgt.tgt_mutex); 670 if (t) { 671 ql_log(ql_log_info, vha, 0xd034, 672 "%s create sess success %p", __func__, t); 673 /* create sess has an extra kref */ 674 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 675 } 676 break; 677 } 678 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 679 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 680 } 681 682 void qla24xx_delete_sess_fn(struct work_struct *work) 683 { 684 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 685 struct qla_hw_data *ha = NULL; 686 687 if (!fcport || !fcport->vha || !fcport->vha->hw) 688 return; 689 690 ha = fcport->vha->hw; 691 692 if (fcport->se_sess) { 693 ha->tgt.tgt_ops->shutdown_sess(fcport); 694 ha->tgt.tgt_ops->put_sess(fcport); 695 } else { 696 qlt_unreg_sess(fcport); 697 } 698 } 699 700 /* 701 * Called from qla2x00_reg_remote_port() 702 */ 703 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 704 { 705 struct qla_hw_data *ha = vha->hw; 706 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 707 struct fc_port *sess = fcport; 708 unsigned long flags; 709 710 if (!vha->hw->tgt.tgt_ops) 711 return; 712 713 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 714 if (tgt->tgt_stop) { 715 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 716 return; 717 } 718 719 if (fcport->disc_state == DSC_DELETE_PEND) { 720 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 721 return; 722 } 723 724 if (!sess->se_sess) { 725 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 726 727 mutex_lock(&vha->vha_tgt.tgt_mutex); 728 sess = qlt_create_sess(vha, fcport, false); 729 mutex_unlock(&vha->vha_tgt.tgt_mutex); 730 731 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 732 } else { 733 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 734 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 735 return; 736 } 737 738 if (!kref_get_unless_zero(&sess->sess_kref)) { 739 ql_dbg(ql_dbg_disc, vha, 0x2107, 740 "%s: kref_get fail sess %8phC \n", 741 __func__, sess->port_name); 742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 743 return; 744 } 745 746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 747 "qla_target(%u): %ssession for port %8phC " 748 "(loop ID %d) reappeared\n", vha->vp_idx, 749 sess->local ? "local " : "", sess->port_name, sess->loop_id); 750 751 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 752 "Reappeared sess %p\n", sess); 753 754 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 755 fcport->loop_id, 756 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 757 } 758 759 if (sess && sess->local) { 760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 761 "qla_target(%u): local session for " 762 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 763 fcport->port_name, sess->loop_id); 764 sess->local = 0; 765 } 766 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 767 768 ha->tgt.tgt_ops->put_sess(sess); 769 } 770 771 /* 772 * This is a zero-base ref-counting solution, since hardware_lock 773 * guarantees that ref_count is not modified concurrently. 774 * Upon successful return content of iocb is undefined 775 */ 776 static struct qlt_plogi_ack_t * 777 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 778 struct imm_ntfy_from_isp *iocb) 779 { 780 struct qlt_plogi_ack_t *pla; 781 782 lockdep_assert_held(&vha->hw->hardware_lock); 783 784 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 785 if (pla->id.b24 == id->b24) { 786 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 787 "%s %d %8phC Term INOT due to new INOT", 788 __func__, __LINE__, 789 pla->iocb.u.isp24.port_name); 790 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 791 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 792 return pla; 793 } 794 } 795 796 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 797 if (!pla) { 798 ql_dbg(ql_dbg_async, vha, 0x5088, 799 "qla_target(%d): Allocation of plogi_ack failed\n", 800 vha->vp_idx); 801 return NULL; 802 } 803 804 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 805 pla->id = *id; 806 list_add_tail(&pla->list, &vha->plogi_ack_list); 807 808 return pla; 809 } 810 811 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 812 struct qlt_plogi_ack_t *pla) 813 { 814 struct imm_ntfy_from_isp *iocb = &pla->iocb; 815 port_id_t port_id; 816 uint16_t loop_id; 817 fc_port_t *fcport = pla->fcport; 818 819 BUG_ON(!pla->ref_count); 820 pla->ref_count--; 821 822 if (pla->ref_count) 823 return; 824 825 ql_dbg(ql_dbg_disc, vha, 0x5089, 826 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 827 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 828 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 829 iocb->u.isp24.port_id[0], 830 le16_to_cpu(iocb->u.isp24.nport_handle), 831 iocb->u.isp24.exchange_address, iocb->ox_id); 832 833 port_id.b.domain = iocb->u.isp24.port_id[2]; 834 port_id.b.area = iocb->u.isp24.port_id[1]; 835 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 836 port_id.b.rsvd_1 = 0; 837 838 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 839 840 fcport->loop_id = loop_id; 841 fcport->d_id = port_id; 842 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 843 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 844 else 845 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 846 847 list_for_each_entry(fcport, &vha->vp_fcports, list) { 848 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 849 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 850 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 851 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 852 } 853 854 list_del(&pla->list); 855 kmem_cache_free(qla_tgt_plogi_cachep, pla); 856 } 857 858 void 859 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 860 struct fc_port *sess, enum qlt_plogi_link_t link) 861 { 862 struct imm_ntfy_from_isp *iocb = &pla->iocb; 863 /* Inc ref_count first because link might already be pointing at pla */ 864 pla->ref_count++; 865 866 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 867 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 868 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 869 sess, link, sess->port_name, 870 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 871 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 872 pla->ref_count, pla, link); 873 874 if (link == QLT_PLOGI_LINK_CONFLICT) { 875 switch (sess->disc_state) { 876 case DSC_DELETED: 877 case DSC_DELETE_PEND: 878 pla->ref_count--; 879 return; 880 default: 881 break; 882 } 883 } 884 885 if (sess->plogi_link[link]) 886 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 887 888 if (link == QLT_PLOGI_LINK_SAME_WWN) 889 pla->fcport = sess; 890 891 sess->plogi_link[link] = pla; 892 } 893 894 typedef struct { 895 /* These fields must be initialized by the caller */ 896 port_id_t id; 897 /* 898 * number of cmds dropped while we were waiting for 899 * initiator to ack LOGO initialize to 1 if LOGO is 900 * triggered by a command, otherwise, to 0 901 */ 902 int cmd_count; 903 904 /* These fields are used by callee */ 905 struct list_head list; 906 } qlt_port_logo_t; 907 908 static void 909 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 910 { 911 qlt_port_logo_t *tmp; 912 int res; 913 914 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 915 res = 0; 916 goto out; 917 } 918 919 mutex_lock(&vha->vha_tgt.tgt_mutex); 920 921 list_for_each_entry(tmp, &vha->logo_list, list) { 922 if (tmp->id.b24 == logo->id.b24) { 923 tmp->cmd_count += logo->cmd_count; 924 mutex_unlock(&vha->vha_tgt.tgt_mutex); 925 return; 926 } 927 } 928 929 list_add_tail(&logo->list, &vha->logo_list); 930 931 mutex_unlock(&vha->vha_tgt.tgt_mutex); 932 933 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 934 935 mutex_lock(&vha->vha_tgt.tgt_mutex); 936 list_del(&logo->list); 937 mutex_unlock(&vha->vha_tgt.tgt_mutex); 938 939 out: 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 943 logo->cmd_count, res); 944 } 945 946 void qlt_free_session_done(struct work_struct *work) 947 { 948 struct fc_port *sess = container_of(work, struct fc_port, 949 free_work); 950 struct qla_tgt *tgt = sess->tgt; 951 struct scsi_qla_host *vha = sess->vha; 952 struct qla_hw_data *ha = vha->hw; 953 unsigned long flags; 954 bool logout_started = false; 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 956 struct qlt_plogi_ack_t *own = 957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 958 959 ql_dbg(ql_dbg_disc, vha, 0xf084, 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 964 sess->logout_on_delete, sess->keep_nport_handle, 965 sess->send_els_logo); 966 967 if (!IS_SW_RESV_ADDR(sess->d_id)) { 968 qla2x00_mark_device_lost(vha, sess, 0); 969 970 if (sess->send_els_logo) { 971 qlt_port_logo_t logo; 972 973 logo.id = sess->d_id; 974 logo.cmd_count = 0; 975 INIT_LIST_HEAD(&logo.list); 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->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 986 sess->logout_completed = 0; 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 if (ha->flags.edif_enabled && 1015 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1016 sess->edif.authok = 0; 1017 if (!ha->flags.host_shutting_down) { 1018 ql_dbg(ql_dbg_edif, vha, 0x911e, 1019 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 1020 __func__, sess->port_name); 1021 qla2x00_release_all_sadb(vha, sess); 1022 } else { 1023 ql_dbg(ql_dbg_edif, vha, 0x911e, 1024 "%s bypassing release_all_sadb\n", 1025 __func__); 1026 } 1027 1028 qla_edif_clear_appdata(vha, sess); 1029 qla_edif_sess_down(vha, sess); 1030 } 1031 } 1032 1033 /* 1034 * Release the target session for FC Nexus from fabric module code. 1035 */ 1036 if (sess->se_sess != NULL) 1037 ha->tgt.tgt_ops->free_session(sess); 1038 1039 if (logout_started) { 1040 bool traced = false; 1041 u16 cnt = 0; 1042 1043 while (!READ_ONCE(sess->logout_completed)) { 1044 if (!traced) { 1045 ql_dbg(ql_dbg_disc, vha, 0xf086, 1046 "%s: waiting for sess %p logout\n", 1047 __func__, sess); 1048 traced = true; 1049 } 1050 msleep(100); 1051 cnt++; 1052 /* 1053 * Driver timeout is set to 22 Sec, update count value to loop 1054 * long enough for log-out to complete before advancing. Otherwise, 1055 * straddling logout can interfere with re-login attempt. 1056 */ 1057 if (cnt > 230) 1058 break; 1059 } 1060 1061 ql_dbg(ql_dbg_disc, vha, 0xf087, 1062 "%s: sess %p logout completed\n", __func__, sess); 1063 } 1064 1065 /* check for any straggling io left behind */ 1066 if (!(sess->flags & FCF_FCP2_DEVICE) && 1067 qla2x00_eh_wait_for_pending_commands(sess->vha, sess->d_id.b24, 0, WAIT_TARGET)) { 1068 ql_log(ql_log_warn, vha, 0x3027, 1069 "IO not return. Resetting.\n"); 1070 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1071 qla2xxx_wake_dpc(vha); 1072 qla2x00_wait_for_chip_reset(vha); 1073 } 1074 1075 if (sess->logo_ack_needed) { 1076 sess->logo_ack_needed = 0; 1077 qla24xx_async_notify_ack(vha, sess, 1078 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1079 } 1080 1081 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1082 if (sess->se_sess) { 1083 sess->se_sess = NULL; 1084 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1085 tgt->sess_count--; 1086 } 1087 1088 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1089 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1090 1091 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1092 vha->fcport_count--; 1093 sess->login_succ = 0; 1094 } 1095 1096 qla2x00_clear_loop_id(sess); 1097 1098 if (sess->conflict) { 1099 sess->conflict->login_pause = 0; 1100 sess->conflict = NULL; 1101 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1102 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1103 } 1104 1105 { 1106 struct qlt_plogi_ack_t *con = 1107 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1108 struct imm_ntfy_from_isp *iocb; 1109 1110 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1111 1112 if (con) { 1113 iocb = &con->iocb; 1114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1115 "se_sess %p / sess %p port %8phC is gone," 1116 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1117 sess->se_sess, sess, sess->port_name, 1118 own ? "releasing own PLOGI" : "no own PLOGI pending", 1119 own ? own->ref_count : -1, 1120 iocb->u.isp24.port_name, con->ref_count); 1121 qlt_plogi_ack_unref(vha, con); 1122 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1123 } else { 1124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1125 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1126 sess->se_sess, sess, sess->port_name, 1127 own ? "releasing own PLOGI" : 1128 "no own PLOGI pending", 1129 own ? own->ref_count : -1); 1130 } 1131 1132 if (own) { 1133 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1134 qlt_plogi_ack_unref(vha, own); 1135 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1136 } 1137 } 1138 1139 sess->explicit_logout = 0; 1140 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1141 1142 qla2x00_dfs_remove_rport(vha, sess); 1143 1144 spin_lock_irqsave(&vha->work_lock, flags); 1145 sess->flags &= ~FCF_ASYNC_SENT; 1146 sess->deleted = QLA_SESS_DELETED; 1147 sess->free_pending = 0; 1148 spin_unlock_irqrestore(&vha->work_lock, flags); 1149 1150 ql_dbg(ql_dbg_disc, vha, 0xf001, 1151 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1152 sess, sess->port_name, vha->fcport_count); 1153 1154 if (tgt && (tgt->sess_count == 0)) 1155 wake_up_all(&tgt->waitQ); 1156 1157 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1158 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1159 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1160 switch (vha->host->active_mode) { 1161 case MODE_INITIATOR: 1162 case MODE_DUAL: 1163 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1164 qla2xxx_wake_dpc(vha); 1165 break; 1166 case MODE_TARGET: 1167 default: 1168 /* no-op */ 1169 break; 1170 } 1171 } 1172 1173 if (vha->fcport_count == 0) 1174 wake_up_all(&vha->fcport_waitQ); 1175 } 1176 1177 /* ha->tgt.sess_lock supposed to be held on entry */ 1178 void qlt_unreg_sess(struct fc_port *sess) 1179 { 1180 struct scsi_qla_host *vha = sess->vha; 1181 unsigned long flags; 1182 1183 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1184 "%s sess %p for deletion %8phC\n", 1185 __func__, sess, sess->port_name); 1186 1187 spin_lock_irqsave(&sess->vha->work_lock, flags); 1188 if (sess->free_pending) { 1189 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1190 return; 1191 } 1192 sess->free_pending = 1; 1193 /* 1194 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1195 * management from being sent. 1196 */ 1197 sess->flags |= FCF_ASYNC_SENT; 1198 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1199 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1200 1201 if (sess->se_sess) 1202 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1203 1204 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1205 sess->last_rscn_gen = sess->rscn_gen; 1206 sess->last_login_gen = sess->login_gen; 1207 1208 queue_work(sess->vha->hw->wq, &sess->free_work); 1209 } 1210 EXPORT_SYMBOL(qlt_unreg_sess); 1211 1212 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1213 { 1214 struct qla_hw_data *ha = vha->hw; 1215 struct fc_port *sess = NULL; 1216 uint16_t loop_id; 1217 int res = 0; 1218 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1219 unsigned long flags; 1220 1221 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1222 if (loop_id == 0xFFFF) { 1223 /* Global event */ 1224 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1225 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1226 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1227 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1228 } else { 1229 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1230 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1232 } 1233 1234 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1235 "Using sess for qla_tgt_reset: %p\n", sess); 1236 if (!sess) { 1237 res = -ESRCH; 1238 return res; 1239 } 1240 1241 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1242 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1243 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1244 mcmd, loop_id); 1245 1246 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1247 } 1248 1249 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1250 { 1251 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1252 sess->logout_on_delete = 0; 1253 sess->logo_ack_needed = 0; 1254 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1255 } 1256 } 1257 1258 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1259 { 1260 struct qla_tgt *tgt = sess->tgt; 1261 unsigned long flags; 1262 u16 sec; 1263 1264 switch (sess->disc_state) { 1265 case DSC_DELETE_PEND: 1266 return; 1267 case DSC_DELETED: 1268 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1269 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1270 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1271 wake_up_all(&tgt->waitQ); 1272 1273 if (sess->vha->fcport_count == 0) 1274 wake_up_all(&sess->vha->fcport_waitQ); 1275 return; 1276 } 1277 break; 1278 case DSC_UPD_FCPORT: 1279 /* 1280 * This port is not done reporting to upper layer. 1281 * let it finish 1282 */ 1283 sess->next_disc_state = DSC_DELETE_PEND; 1284 sec = jiffies_to_msecs(jiffies - 1285 sess->jiffies_at_registration)/1000; 1286 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1287 sess->sec_since_registration = sec; 1288 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1289 "%s %8phC : Slow Rport registration(%d Sec)\n", 1290 __func__, sess->port_name, sec); 1291 } 1292 return; 1293 default: 1294 break; 1295 } 1296 1297 spin_lock_irqsave(&sess->vha->work_lock, flags); 1298 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1299 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1300 return; 1301 } 1302 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1303 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1304 1305 sess->prli_pend_timer = 0; 1306 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1307 1308 qla24xx_chk_fcp_state(sess); 1309 1310 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1311 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1312 sess, sess->port_name, sess->fc4_type); 1313 1314 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1315 } 1316 1317 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1318 { 1319 struct fc_port *sess; 1320 scsi_qla_host_t *vha = tgt->vha; 1321 1322 list_for_each_entry(sess, &vha->vp_fcports, list) { 1323 if (sess->se_sess) 1324 qlt_schedule_sess_for_deletion(sess); 1325 } 1326 1327 /* At this point tgt could be already dead */ 1328 } 1329 1330 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1331 uint16_t *loop_id) 1332 { 1333 struct qla_hw_data *ha = vha->hw; 1334 dma_addr_t gid_list_dma; 1335 struct gid_list_info *gid_list, *gid; 1336 int res, rc, i; 1337 uint16_t entries; 1338 1339 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1340 &gid_list_dma, GFP_KERNEL); 1341 if (!gid_list) { 1342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1343 "qla_target(%d): DMA Alloc failed of %u\n", 1344 vha->vp_idx, qla2x00_gid_list_size(ha)); 1345 return -ENOMEM; 1346 } 1347 1348 /* Get list of logged in devices */ 1349 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1350 if (rc != QLA_SUCCESS) { 1351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1352 "qla_target(%d): get_id_list() failed: %x\n", 1353 vha->vp_idx, rc); 1354 res = -EBUSY; 1355 goto out_free_id_list; 1356 } 1357 1358 gid = gid_list; 1359 res = -ENOENT; 1360 for (i = 0; i < entries; i++) { 1361 if (gid->al_pa == s_id.al_pa && 1362 gid->area == s_id.area && 1363 gid->domain == s_id.domain) { 1364 *loop_id = le16_to_cpu(gid->loop_id); 1365 res = 0; 1366 break; 1367 } 1368 gid = (void *)gid + ha->gid_list_info_size; 1369 } 1370 1371 out_free_id_list: 1372 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1373 gid_list, gid_list_dma); 1374 return res; 1375 } 1376 1377 /* 1378 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1379 * Caller must put it. 1380 */ 1381 static struct fc_port *qlt_create_sess( 1382 struct scsi_qla_host *vha, 1383 fc_port_t *fcport, 1384 bool local) 1385 { 1386 struct qla_hw_data *ha = vha->hw; 1387 struct fc_port *sess = fcport; 1388 unsigned long flags; 1389 1390 if (vha->vha_tgt.qla_tgt->tgt_stop) 1391 return NULL; 1392 1393 if (fcport->se_sess) { 1394 if (!kref_get_unless_zero(&sess->sess_kref)) { 1395 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1396 "%s: kref_get_unless_zero failed for %8phC\n", 1397 __func__, sess->port_name); 1398 return NULL; 1399 } 1400 return fcport; 1401 } 1402 sess->tgt = vha->vha_tgt.qla_tgt; 1403 sess->local = local; 1404 1405 /* 1406 * Under normal circumstances we want to logout from firmware when 1407 * session eventually ends and release corresponding nport handle. 1408 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1409 * code will adjust these flags as necessary. 1410 */ 1411 sess->logout_on_delete = 1; 1412 sess->keep_nport_handle = 0; 1413 sess->logout_completed = 0; 1414 1415 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1416 &fcport->port_name[0], sess) < 0) { 1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1418 "(%d) %8phC check_initiator_node_acl failed\n", 1419 vha->vp_idx, fcport->port_name); 1420 return NULL; 1421 } else { 1422 kref_init(&fcport->sess_kref); 1423 /* 1424 * Take an extra reference to ->sess_kref here to handle 1425 * fc_port access across ->tgt.sess_lock reaquire. 1426 */ 1427 if (!kref_get_unless_zero(&sess->sess_kref)) { 1428 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1429 "%s: kref_get_unless_zero failed for %8phC\n", 1430 __func__, sess->port_name); 1431 return NULL; 1432 } 1433 1434 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1435 if (!IS_SW_RESV_ADDR(sess->d_id)) 1436 vha->vha_tgt.qla_tgt->sess_count++; 1437 1438 qlt_do_generation_tick(vha, &sess->generation); 1439 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1440 } 1441 1442 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1443 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1444 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1445 vha->vha_tgt.qla_tgt->sess_count); 1446 1447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1448 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1449 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1450 vha->vp_idx, local ? "local " : "", fcport->port_name, 1451 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1452 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1453 1454 return sess; 1455 } 1456 1457 /* 1458 * max_gen - specifies maximum session generation 1459 * at which this deletion requestion is still valid 1460 */ 1461 void 1462 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1463 { 1464 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1465 struct fc_port *sess = fcport; 1466 unsigned long flags; 1467 1468 if (!vha->hw->tgt.tgt_ops) 1469 return; 1470 1471 if (!tgt) 1472 return; 1473 1474 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1475 if (tgt->tgt_stop) { 1476 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1477 return; 1478 } 1479 if (!sess->se_sess) { 1480 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1481 return; 1482 } 1483 1484 if (max_gen - sess->generation < 0) { 1485 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1486 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1487 "Ignoring stale deletion request for se_sess %p / sess %p" 1488 " for port %8phC, req_gen %d, sess_gen %d\n", 1489 sess->se_sess, sess, sess->port_name, max_gen, 1490 sess->generation); 1491 return; 1492 } 1493 1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1495 1496 sess->local = 1; 1497 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1498 qlt_schedule_sess_for_deletion(sess); 1499 } 1500 1501 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1502 { 1503 struct qla_hw_data *ha = tgt->ha; 1504 unsigned long flags; 1505 int res; 1506 /* 1507 * We need to protect against race, when tgt is freed before or 1508 * inside wake_up() 1509 */ 1510 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1511 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1512 "tgt %p, sess_count=%d\n", 1513 tgt, tgt->sess_count); 1514 res = (tgt->sess_count == 0); 1515 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1516 1517 return res; 1518 } 1519 1520 /* Called by tcm_qla2xxx configfs code */ 1521 int qlt_stop_phase1(struct qla_tgt *tgt) 1522 { 1523 struct scsi_qla_host *vha = tgt->vha; 1524 struct qla_hw_data *ha = tgt->ha; 1525 unsigned long flags; 1526 1527 mutex_lock(&ha->optrom_mutex); 1528 mutex_lock(&qla_tgt_mutex); 1529 1530 if (tgt->tgt_stop || tgt->tgt_stopped) { 1531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1532 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1533 mutex_unlock(&qla_tgt_mutex); 1534 mutex_unlock(&ha->optrom_mutex); 1535 return -EPERM; 1536 } 1537 1538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1539 vha->host_no, vha); 1540 /* 1541 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1542 * Lock is needed, because we still can get an incoming packet. 1543 */ 1544 mutex_lock(&vha->vha_tgt.tgt_mutex); 1545 tgt->tgt_stop = 1; 1546 qlt_clear_tgt_db(tgt); 1547 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1548 mutex_unlock(&qla_tgt_mutex); 1549 1550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1551 "Waiting for sess works (tgt %p)", tgt); 1552 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1553 do { 1554 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1555 flush_work(&tgt->sess_work); 1556 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1557 } while (!list_empty(&tgt->sess_works_list)); 1558 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1559 1560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1561 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1562 1563 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1564 1565 /* Big hammer */ 1566 if (!ha->flags.host_shutting_down && 1567 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1568 qlt_disable_vha(vha); 1569 1570 /* Wait for sessions to clear out (just in case) */ 1571 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1572 mutex_unlock(&ha->optrom_mutex); 1573 1574 return 0; 1575 } 1576 EXPORT_SYMBOL(qlt_stop_phase1); 1577 1578 /* Called by tcm_qla2xxx configfs code */ 1579 void qlt_stop_phase2(struct qla_tgt *tgt) 1580 { 1581 scsi_qla_host_t *vha = tgt->vha; 1582 1583 if (tgt->tgt_stopped) { 1584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1585 "Already in tgt->tgt_stopped state\n"); 1586 dump_stack(); 1587 return; 1588 } 1589 if (!tgt->tgt_stop) { 1590 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1591 "%s: phase1 stop is not completed\n", __func__); 1592 dump_stack(); 1593 return; 1594 } 1595 1596 mutex_lock(&tgt->ha->optrom_mutex); 1597 mutex_lock(&vha->vha_tgt.tgt_mutex); 1598 tgt->tgt_stop = 0; 1599 tgt->tgt_stopped = 1; 1600 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1601 mutex_unlock(&tgt->ha->optrom_mutex); 1602 1603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1604 tgt); 1605 1606 switch (vha->qlini_mode) { 1607 case QLA2XXX_INI_MODE_EXCLUSIVE: 1608 vha->flags.online = 1; 1609 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1610 break; 1611 default: 1612 break; 1613 } 1614 } 1615 EXPORT_SYMBOL(qlt_stop_phase2); 1616 1617 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1618 static void qlt_release(struct qla_tgt *tgt) 1619 { 1620 scsi_qla_host_t *vha = tgt->vha; 1621 void *node; 1622 u64 key = 0; 1623 u16 i; 1624 struct qla_qpair_hint *h; 1625 struct qla_hw_data *ha = vha->hw; 1626 1627 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1628 qlt_stop_phase1(tgt); 1629 1630 if (!tgt->tgt_stopped) 1631 qlt_stop_phase2(tgt); 1632 1633 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1634 unsigned long flags; 1635 1636 h = &tgt->qphints[i]; 1637 if (h->qpair) { 1638 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1639 list_del(&h->hint_elem); 1640 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1641 h->qpair = NULL; 1642 } 1643 } 1644 kfree(tgt->qphints); 1645 mutex_lock(&qla_tgt_mutex); 1646 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1647 mutex_unlock(&qla_tgt_mutex); 1648 1649 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1650 btree_remove64(&tgt->lun_qpair_map, key); 1651 1652 btree_destroy64(&tgt->lun_qpair_map); 1653 1654 if (vha->vp_idx) 1655 if (ha->tgt.tgt_ops && 1656 ha->tgt.tgt_ops->remove_target && 1657 vha->vha_tgt.target_lport_ptr) 1658 ha->tgt.tgt_ops->remove_target(vha); 1659 1660 vha->vha_tgt.qla_tgt = NULL; 1661 1662 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1663 "Release of tgt %p finished\n", tgt); 1664 1665 kfree(tgt); 1666 } 1667 1668 /* ha->hardware_lock supposed to be held on entry */ 1669 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1670 const void *param, unsigned int param_size) 1671 { 1672 struct qla_tgt_sess_work_param *prm; 1673 unsigned long flags; 1674 1675 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1676 if (!prm) { 1677 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1678 "qla_target(%d): Unable to create session " 1679 "work, command will be refused", 0); 1680 return -ENOMEM; 1681 } 1682 1683 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1684 "Scheduling work (type %d, prm %p)" 1685 " to find session for param %p (size %d, tgt %p)\n", 1686 type, prm, param, param_size, tgt); 1687 1688 prm->type = type; 1689 memcpy(&prm->tm_iocb, param, param_size); 1690 1691 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1692 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1693 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1694 1695 schedule_work(&tgt->sess_work); 1696 1697 return 0; 1698 } 1699 1700 /* 1701 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1702 */ 1703 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1704 struct imm_ntfy_from_isp *ntfy, 1705 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1706 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1707 { 1708 struct scsi_qla_host *vha = qpair->vha; 1709 struct qla_hw_data *ha = vha->hw; 1710 request_t *pkt; 1711 struct nack_to_isp *nack; 1712 1713 if (!ha->flags.fw_started) 1714 return; 1715 1716 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1717 1718 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1719 if (!pkt) { 1720 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1721 "qla_target(%d): %s failed: unable to allocate " 1722 "request packet\n", vha->vp_idx, __func__); 1723 return; 1724 } 1725 1726 if (vha->vha_tgt.qla_tgt != NULL) 1727 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1728 1729 pkt->entry_type = NOTIFY_ACK_TYPE; 1730 pkt->entry_count = 1; 1731 1732 nack = (struct nack_to_isp *)pkt; 1733 nack->ox_id = ntfy->ox_id; 1734 1735 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1736 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1737 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1738 nack->u.isp24.flags = ntfy->u.isp24.flags & 1739 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1740 } 1741 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1742 nack->u.isp24.status = ntfy->u.isp24.status; 1743 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1744 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1745 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1746 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1747 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1748 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1749 nack->u.isp24.srr_reject_code = srr_reject_code; 1750 nack->u.isp24.srr_reject_code_expl = srr_explan; 1751 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1752 1753 /* TODO qualify this with EDIF enable */ 1754 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1755 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1756 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1757 } 1758 1759 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1760 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1761 vha->vp_idx, nack->u.isp24.status); 1762 1763 /* Memory Barrier */ 1764 wmb(); 1765 qla2x00_start_iocbs(vha, qpair->req); 1766 } 1767 1768 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1769 { 1770 struct scsi_qla_host *vha = mcmd->vha; 1771 struct qla_hw_data *ha = vha->hw; 1772 struct abts_resp_to_24xx *resp; 1773 __le32 f_ctl; 1774 uint32_t h; 1775 uint8_t *p; 1776 int rc; 1777 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1778 struct qla_qpair *qpair = mcmd->qpair; 1779 1780 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1781 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1782 ha, mcmd->fc_tm_rsp); 1783 1784 rc = qlt_check_reserve_free_req(qpair, 1); 1785 if (rc) { 1786 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1787 "qla_target(%d): %s failed: unable to allocate request packet\n", 1788 vha->vp_idx, __func__); 1789 return -EAGAIN; 1790 } 1791 1792 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1793 memset(resp, 0, sizeof(*resp)); 1794 1795 h = qlt_make_handle(qpair); 1796 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1797 /* 1798 * CTIO type 7 from the firmware doesn't provide a way to 1799 * know the initiator's LOOP ID, hence we can't find 1800 * the session and, so, the command. 1801 */ 1802 return -EAGAIN; 1803 } else { 1804 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1805 } 1806 1807 resp->handle = make_handle(qpair->req->id, h); 1808 resp->entry_type = ABTS_RESP_24XX; 1809 resp->entry_count = 1; 1810 resp->nport_handle = abts->nport_handle; 1811 resp->vp_index = vha->vp_idx; 1812 resp->sof_type = abts->sof_type; 1813 resp->exchange_address = abts->exchange_address; 1814 resp->fcp_hdr_le = abts->fcp_hdr_le; 1815 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1816 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1817 F_CTL_SEQ_INITIATIVE); 1818 p = (uint8_t *)&f_ctl; 1819 resp->fcp_hdr_le.f_ctl[0] = *p++; 1820 resp->fcp_hdr_le.f_ctl[1] = *p++; 1821 resp->fcp_hdr_le.f_ctl[2] = *p; 1822 1823 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1824 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1825 1826 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1827 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1828 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1829 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1830 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1831 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1832 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1833 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1834 } else { 1835 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1836 resp->payload.ba_rjt.reason_code = 1837 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1838 /* Other bytes are zero */ 1839 } 1840 1841 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1842 1843 /* Memory Barrier */ 1844 wmb(); 1845 if (qpair->reqq_start_iocbs) 1846 qpair->reqq_start_iocbs(qpair); 1847 else 1848 qla2x00_start_iocbs(vha, qpair->req); 1849 1850 return rc; 1851 } 1852 1853 /* 1854 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1855 */ 1856 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1857 struct abts_recv_from_24xx *abts, uint32_t status, 1858 bool ids_reversed) 1859 { 1860 struct scsi_qla_host *vha = qpair->vha; 1861 struct qla_hw_data *ha = vha->hw; 1862 struct abts_resp_to_24xx *resp; 1863 __le32 f_ctl; 1864 uint8_t *p; 1865 1866 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1867 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1868 ha, abts, status); 1869 1870 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1871 NULL); 1872 if (!resp) { 1873 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1874 "qla_target(%d): %s failed: unable to allocate " 1875 "request packet", vha->vp_idx, __func__); 1876 return; 1877 } 1878 1879 resp->entry_type = ABTS_RESP_24XX; 1880 resp->handle = QLA_TGT_SKIP_HANDLE; 1881 resp->entry_count = 1; 1882 resp->nport_handle = abts->nport_handle; 1883 resp->vp_index = vha->vp_idx; 1884 resp->sof_type = abts->sof_type; 1885 resp->exchange_address = abts->exchange_address; 1886 resp->fcp_hdr_le = abts->fcp_hdr_le; 1887 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1888 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1889 F_CTL_SEQ_INITIATIVE); 1890 p = (uint8_t *)&f_ctl; 1891 resp->fcp_hdr_le.f_ctl[0] = *p++; 1892 resp->fcp_hdr_le.f_ctl[1] = *p++; 1893 resp->fcp_hdr_le.f_ctl[2] = *p; 1894 if (ids_reversed) { 1895 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1896 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1897 } else { 1898 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1899 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1900 } 1901 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1902 if (status == FCP_TMF_CMPL) { 1903 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1904 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1905 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1906 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1907 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1908 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1909 } else { 1910 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1911 resp->payload.ba_rjt.reason_code = 1912 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1913 /* Other bytes are zero */ 1914 } 1915 1916 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1917 1918 /* Memory Barrier */ 1919 wmb(); 1920 if (qpair->reqq_start_iocbs) 1921 qpair->reqq_start_iocbs(qpair); 1922 else 1923 qla2x00_start_iocbs(vha, qpair->req); 1924 } 1925 1926 /* 1927 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1928 */ 1929 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1930 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1931 { 1932 struct ctio7_to_24xx *ctio; 1933 u16 tmp; 1934 struct abts_recv_from_24xx *entry; 1935 1936 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1937 if (ctio == NULL) { 1938 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1939 "qla_target(%d): %s failed: unable to allocate " 1940 "request packet\n", vha->vp_idx, __func__); 1941 return; 1942 } 1943 1944 if (mcmd) 1945 /* abts from remote port */ 1946 entry = &mcmd->orig_iocb.abts; 1947 else 1948 /* abts from this driver. */ 1949 entry = (struct abts_recv_from_24xx *)pkt; 1950 1951 /* 1952 * We've got on entrance firmware's response on by us generated 1953 * ABTS response. So, in it ID fields are reversed. 1954 */ 1955 1956 ctio->entry_type = CTIO_TYPE7; 1957 ctio->entry_count = 1; 1958 ctio->nport_handle = entry->nport_handle; 1959 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1960 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1961 ctio->vp_index = vha->vp_idx; 1962 ctio->exchange_addr = entry->exchange_addr_to_abort; 1963 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1964 1965 if (mcmd) { 1966 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1967 1968 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1969 tmp |= (mcmd->abort_io_attr << 9); 1970 else if (qpair->retry_term_cnt & 1) 1971 tmp |= (0x4 << 9); 1972 } else { 1973 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1974 1975 if (qpair->retry_term_cnt & 1) 1976 tmp |= (0x4 << 9); 1977 } 1978 ctio->u.status1.flags = cpu_to_le16(tmp); 1979 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1980 1981 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1982 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1983 le16_to_cpu(ctio->u.status1.flags), 1984 le16_to_cpu(ctio->u.status1.ox_id), 1985 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1986 1987 /* Memory Barrier */ 1988 wmb(); 1989 if (qpair->reqq_start_iocbs) 1990 qpair->reqq_start_iocbs(qpair); 1991 else 1992 qla2x00_start_iocbs(vha, qpair->req); 1993 1994 if (mcmd) 1995 qlt_build_abts_resp_iocb(mcmd); 1996 else 1997 qlt_24xx_send_abts_resp(qpair, 1998 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1999 2000 } 2001 2002 /* drop cmds for the given lun 2003 * XXX only looks for cmds on the port through which lun reset was recieved 2004 * XXX does not go through the list of other port (which may have cmds 2005 * for the same lun) 2006 */ 2007 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2008 { 2009 struct qla_tgt_sess_op *op; 2010 struct qla_tgt_cmd *cmd; 2011 uint32_t key; 2012 unsigned long flags; 2013 2014 key = sid_to_key(s_id); 2015 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2016 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2017 uint32_t op_key; 2018 u64 op_lun; 2019 2020 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2021 op_lun = scsilun_to_int( 2022 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2023 if (op_key == key && op_lun == lun) 2024 op->aborted = true; 2025 } 2026 2027 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2028 uint32_t cmd_key; 2029 u64 cmd_lun; 2030 2031 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2032 cmd_lun = scsilun_to_int( 2033 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2034 if (cmd_key == key && cmd_lun == lun) 2035 cmd->aborted = 1; 2036 } 2037 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2038 } 2039 2040 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2041 uint64_t unpacked_lun) 2042 { 2043 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2044 struct qla_qpair_hint *h = NULL; 2045 2046 if (vha->flags.qpairs_available) { 2047 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2048 if (!h) 2049 h = &tgt->qphints[0]; 2050 } else { 2051 h = &tgt->qphints[0]; 2052 } 2053 2054 return h; 2055 } 2056 2057 static void qlt_do_tmr_work(struct work_struct *work) 2058 { 2059 struct qla_tgt_mgmt_cmd *mcmd = 2060 container_of(work, struct qla_tgt_mgmt_cmd, work); 2061 struct qla_hw_data *ha = mcmd->vha->hw; 2062 int rc; 2063 uint32_t tag; 2064 unsigned long flags; 2065 2066 switch (mcmd->tmr_func) { 2067 case QLA_TGT_ABTS: 2068 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2069 break; 2070 default: 2071 tag = 0; 2072 break; 2073 } 2074 2075 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2076 mcmd->tmr_func, tag); 2077 2078 if (rc != 0) { 2079 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2080 switch (mcmd->tmr_func) { 2081 case QLA_TGT_ABTS: 2082 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2083 qlt_build_abts_resp_iocb(mcmd); 2084 break; 2085 case QLA_TGT_LUN_RESET: 2086 case QLA_TGT_CLEAR_TS: 2087 case QLA_TGT_ABORT_TS: 2088 case QLA_TGT_CLEAR_ACA: 2089 case QLA_TGT_TARGET_RESET: 2090 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2091 qla_sam_status); 2092 break; 2093 2094 case QLA_TGT_ABORT_ALL: 2095 case QLA_TGT_NEXUS_LOSS_SESS: 2096 case QLA_TGT_NEXUS_LOSS: 2097 qlt_send_notify_ack(mcmd->qpair, 2098 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2099 break; 2100 } 2101 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2102 2103 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2104 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2105 mcmd->vha->vp_idx, rc); 2106 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2107 } 2108 } 2109 2110 /* ha->hardware_lock supposed to be held on entry */ 2111 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2112 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2113 { 2114 struct qla_hw_data *ha = vha->hw; 2115 struct qla_tgt_mgmt_cmd *mcmd; 2116 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2117 struct qla_tgt_cmd *abort_cmd; 2118 2119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2120 "qla_target(%d): task abort (tag=%d)\n", 2121 vha->vp_idx, abts->exchange_addr_to_abort); 2122 2123 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2124 if (mcmd == NULL) { 2125 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2126 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2127 vha->vp_idx, __func__); 2128 return -ENOMEM; 2129 } 2130 memset(mcmd, 0, sizeof(*mcmd)); 2131 mcmd->cmd_type = TYPE_TGT_TMCMD; 2132 mcmd->sess = sess; 2133 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2134 mcmd->reset_count = ha->base_qpair->chip_reset; 2135 mcmd->tmr_func = QLA_TGT_ABTS; 2136 mcmd->qpair = h->qpair; 2137 mcmd->vha = vha; 2138 2139 /* 2140 * LUN is looked up by target-core internally based on the passed 2141 * abts->exchange_addr_to_abort tag. 2142 */ 2143 mcmd->se_cmd.cpuid = h->cpuid; 2144 2145 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2146 le32_to_cpu(abts->exchange_addr_to_abort)); 2147 if (!abort_cmd) { 2148 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2149 return -EIO; 2150 } 2151 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2152 2153 if (abort_cmd->qpair) { 2154 mcmd->qpair = abort_cmd->qpair; 2155 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2156 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2157 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2158 } 2159 2160 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2161 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2162 2163 return 0; 2164 } 2165 2166 /* 2167 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2168 */ 2169 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2170 struct abts_recv_from_24xx *abts) 2171 { 2172 struct qla_hw_data *ha = vha->hw; 2173 struct fc_port *sess; 2174 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2175 be_id_t s_id; 2176 int rc; 2177 unsigned long flags; 2178 2179 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2180 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2181 "qla_target(%d): ABTS: Abort Sequence not " 2182 "supported\n", vha->vp_idx); 2183 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2184 false); 2185 return; 2186 } 2187 2188 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2190 "qla_target(%d): ABTS: Unknown Exchange " 2191 "Address received\n", vha->vp_idx); 2192 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2193 false); 2194 return; 2195 } 2196 2197 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2198 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2199 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2200 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2201 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2202 2203 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2204 2205 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2206 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2207 if (!sess) { 2208 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2209 "qla_target(%d): task abort for non-existent session\n", 2210 vha->vp_idx); 2211 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2212 2213 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2214 false); 2215 return; 2216 } 2217 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2218 2219 2220 if (sess->deleted) { 2221 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2222 false); 2223 return; 2224 } 2225 2226 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2227 if (rc != 0) { 2228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2229 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2230 vha->vp_idx, rc); 2231 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2232 false); 2233 return; 2234 } 2235 } 2236 2237 /* 2238 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2239 */ 2240 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2241 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2242 { 2243 struct scsi_qla_host *ha = mcmd->vha; 2244 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2245 struct ctio7_to_24xx *ctio; 2246 uint16_t temp; 2247 2248 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2249 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2250 ha, atio, resp_code); 2251 2252 2253 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2254 if (ctio == NULL) { 2255 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2256 "qla_target(%d): %s failed: unable to allocate " 2257 "request packet\n", ha->vp_idx, __func__); 2258 return; 2259 } 2260 2261 ctio->entry_type = CTIO_TYPE7; 2262 ctio->entry_count = 1; 2263 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2264 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2265 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2266 ctio->vp_index = ha->vp_idx; 2267 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2268 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2269 temp = (atio->u.isp24.attr << 9)| 2270 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2271 ctio->u.status1.flags = cpu_to_le16(temp); 2272 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2273 ctio->u.status1.ox_id = cpu_to_le16(temp); 2274 ctio->u.status1.scsi_status = 2275 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2276 ctio->u.status1.response_len = cpu_to_le16(8); 2277 ctio->u.status1.sense_data[0] = resp_code; 2278 2279 /* Memory Barrier */ 2280 wmb(); 2281 if (qpair->reqq_start_iocbs) 2282 qpair->reqq_start_iocbs(qpair); 2283 else 2284 qla2x00_start_iocbs(ha, qpair->req); 2285 } 2286 2287 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2288 { 2289 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2290 } 2291 EXPORT_SYMBOL(qlt_free_mcmd); 2292 2293 /* 2294 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2295 * reacquire 2296 */ 2297 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2298 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2299 { 2300 struct atio_from_isp *atio = &cmd->atio; 2301 struct ctio7_to_24xx *ctio; 2302 uint16_t temp; 2303 struct scsi_qla_host *vha = cmd->vha; 2304 2305 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2306 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2307 "sense_key=%02x, asc=%02x, ascq=%02x", 2308 vha, atio, scsi_status, sense_key, asc, ascq); 2309 2310 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2311 if (!ctio) { 2312 ql_dbg(ql_dbg_async, vha, 0x3067, 2313 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2314 vha->host_no, __func__); 2315 goto out; 2316 } 2317 2318 ctio->entry_type = CTIO_TYPE7; 2319 ctio->entry_count = 1; 2320 ctio->handle = QLA_TGT_SKIP_HANDLE; 2321 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2322 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2323 ctio->vp_index = vha->vp_idx; 2324 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2325 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2326 temp = (atio->u.isp24.attr << 9) | 2327 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2328 ctio->u.status1.flags = cpu_to_le16(temp); 2329 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2330 ctio->u.status1.ox_id = cpu_to_le16(temp); 2331 ctio->u.status1.scsi_status = 2332 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2333 ctio->u.status1.response_len = cpu_to_le16(18); 2334 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2335 2336 if (ctio->u.status1.residual != 0) 2337 ctio->u.status1.scsi_status |= 2338 cpu_to_le16(SS_RESIDUAL_UNDER); 2339 2340 /* Fixed format sense data. */ 2341 ctio->u.status1.sense_data[0] = 0x70; 2342 ctio->u.status1.sense_data[2] = sense_key; 2343 /* Additional sense length */ 2344 ctio->u.status1.sense_data[7] = 0xa; 2345 /* ASC and ASCQ */ 2346 ctio->u.status1.sense_data[12] = asc; 2347 ctio->u.status1.sense_data[13] = ascq; 2348 2349 /* Memory Barrier */ 2350 wmb(); 2351 2352 if (qpair->reqq_start_iocbs) 2353 qpair->reqq_start_iocbs(qpair); 2354 else 2355 qla2x00_start_iocbs(vha, qpair->req); 2356 2357 out: 2358 return; 2359 } 2360 2361 /* callback from target fabric module code */ 2362 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2363 { 2364 struct scsi_qla_host *vha = mcmd->sess->vha; 2365 struct qla_hw_data *ha = vha->hw; 2366 unsigned long flags; 2367 struct qla_qpair *qpair = mcmd->qpair; 2368 bool free_mcmd = true; 2369 2370 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2371 "TM response mcmd (%p) status %#x state %#x", 2372 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2373 2374 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2375 2376 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2377 /* 2378 * Either the port is not online or this request was from 2379 * previous life, just abort the processing. 2380 */ 2381 ql_dbg(ql_dbg_async, vha, 0xe100, 2382 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2383 vha->flags.online, qla2x00_reset_active(vha), 2384 mcmd->reset_count, qpair->chip_reset); 2385 ha->tgt.tgt_ops->free_mcmd(mcmd); 2386 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2387 return; 2388 } 2389 2390 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2391 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2392 case ELS_LOGO: 2393 case ELS_PRLO: 2394 case ELS_TPRLO: 2395 ql_dbg(ql_dbg_disc, vha, 0x2106, 2396 "TM response logo %8phC status %#x state %#x", 2397 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2398 mcmd->flags); 2399 qlt_schedule_sess_for_deletion(mcmd->sess); 2400 break; 2401 default: 2402 qlt_send_notify_ack(vha->hw->base_qpair, 2403 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2404 break; 2405 } 2406 } else { 2407 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2408 qlt_build_abts_resp_iocb(mcmd); 2409 free_mcmd = false; 2410 } else 2411 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2412 mcmd->fc_tm_rsp); 2413 } 2414 /* 2415 * Make the callback for ->free_mcmd() to queue_work() and invoke 2416 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2417 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2418 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2419 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2420 * qlt_xmit_tm_rsp() returns here.. 2421 */ 2422 if (free_mcmd) 2423 ha->tgt.tgt_ops->free_mcmd(mcmd); 2424 2425 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2426 } 2427 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2428 2429 /* No locks */ 2430 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2431 { 2432 struct qla_tgt_cmd *cmd = prm->cmd; 2433 2434 BUG_ON(cmd->sg_cnt == 0); 2435 2436 prm->sg = (struct scatterlist *)cmd->sg; 2437 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2438 cmd->sg_cnt, cmd->dma_data_direction); 2439 if (unlikely(prm->seg_cnt == 0)) 2440 goto out_err; 2441 2442 prm->cmd->sg_mapped = 1; 2443 2444 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2445 /* 2446 * If greater than four sg entries then we need to allocate 2447 * the continuation entries 2448 */ 2449 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2450 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2451 QLA_TGT_DATASEGS_PER_CMD_24XX, 2452 QLA_TGT_DATASEGS_PER_CONT_24XX); 2453 } else { 2454 /* DIF */ 2455 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2456 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2457 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2458 prm->tot_dsds = prm->seg_cnt; 2459 } else 2460 prm->tot_dsds = prm->seg_cnt; 2461 2462 if (cmd->prot_sg_cnt) { 2463 prm->prot_sg = cmd->prot_sg; 2464 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2465 cmd->prot_sg, cmd->prot_sg_cnt, 2466 cmd->dma_data_direction); 2467 if (unlikely(prm->prot_seg_cnt == 0)) 2468 goto out_err; 2469 2470 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2471 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2472 /* Dif Bundling not support here */ 2473 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2474 cmd->blk_sz); 2475 prm->tot_dsds += prm->prot_seg_cnt; 2476 } else 2477 prm->tot_dsds += prm->prot_seg_cnt; 2478 } 2479 } 2480 2481 return 0; 2482 2483 out_err: 2484 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2485 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2486 0, prm->cmd->sg_cnt); 2487 return -1; 2488 } 2489 2490 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2491 { 2492 struct qla_hw_data *ha; 2493 struct qla_qpair *qpair; 2494 2495 if (!cmd->sg_mapped) 2496 return; 2497 2498 qpair = cmd->qpair; 2499 2500 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2501 cmd->dma_data_direction); 2502 cmd->sg_mapped = 0; 2503 2504 if (cmd->prot_sg_cnt) 2505 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2506 cmd->dma_data_direction); 2507 2508 if (!cmd->ctx) 2509 return; 2510 ha = vha->hw; 2511 if (cmd->ctx_dsd_alloced) 2512 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2513 2514 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2515 } 2516 2517 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2518 uint32_t req_cnt) 2519 { 2520 uint32_t cnt; 2521 struct req_que *req = qpair->req; 2522 2523 if (req->cnt < (req_cnt + 2)) { 2524 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2525 rd_reg_dword_relaxed(req->req_q_out)); 2526 2527 if (req->ring_index < cnt) 2528 req->cnt = cnt - req->ring_index; 2529 else 2530 req->cnt = req->length - (req->ring_index - cnt); 2531 2532 if (unlikely(req->cnt < (req_cnt + 2))) 2533 return -EAGAIN; 2534 } 2535 2536 req->cnt -= req_cnt; 2537 2538 return 0; 2539 } 2540 2541 /* 2542 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2543 */ 2544 static inline void *qlt_get_req_pkt(struct req_que *req) 2545 { 2546 /* Adjust ring index. */ 2547 req->ring_index++; 2548 if (req->ring_index == req->length) { 2549 req->ring_index = 0; 2550 req->ring_ptr = req->ring; 2551 } else { 2552 req->ring_ptr++; 2553 } 2554 return (cont_entry_t *)req->ring_ptr; 2555 } 2556 2557 /* ha->hardware_lock supposed to be held on entry */ 2558 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2559 { 2560 uint32_t h; 2561 int index; 2562 uint8_t found = 0; 2563 struct req_que *req = qpair->req; 2564 2565 h = req->current_outstanding_cmd; 2566 2567 for (index = 1; index < req->num_outstanding_cmds; index++) { 2568 h++; 2569 if (h == req->num_outstanding_cmds) 2570 h = 1; 2571 2572 if (h == QLA_TGT_SKIP_HANDLE) 2573 continue; 2574 2575 if (!req->outstanding_cmds[h]) { 2576 found = 1; 2577 break; 2578 } 2579 } 2580 2581 if (found) { 2582 req->current_outstanding_cmd = h; 2583 } else { 2584 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2585 "qla_target(%d): Ran out of empty cmd slots\n", 2586 qpair->vha->vp_idx); 2587 h = QLA_TGT_NULL_HANDLE; 2588 } 2589 2590 return h; 2591 } 2592 2593 /* ha->hardware_lock supposed to be held on entry */ 2594 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2595 struct qla_tgt_prm *prm) 2596 { 2597 uint32_t h; 2598 struct ctio7_to_24xx *pkt; 2599 struct atio_from_isp *atio = &prm->cmd->atio; 2600 uint16_t temp; 2601 struct qla_tgt_cmd *cmd = prm->cmd; 2602 2603 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2604 prm->pkt = pkt; 2605 memset(pkt, 0, sizeof(*pkt)); 2606 2607 pkt->entry_type = CTIO_TYPE7; 2608 pkt->entry_count = (uint8_t)prm->req_cnt; 2609 pkt->vp_index = prm->cmd->vp_idx; 2610 2611 h = qlt_make_handle(qpair); 2612 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2613 /* 2614 * CTIO type 7 from the firmware doesn't provide a way to 2615 * know the initiator's LOOP ID, hence we can't find 2616 * the session and, so, the command. 2617 */ 2618 return -EAGAIN; 2619 } else 2620 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2621 2622 pkt->handle = make_handle(qpair->req->id, h); 2623 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2624 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2625 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2626 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2627 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2628 temp = atio->u.isp24.attr << 9; 2629 pkt->u.status0.flags |= cpu_to_le16(temp); 2630 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2631 pkt->u.status0.ox_id = cpu_to_le16(temp); 2632 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2633 2634 if (cmd->edif) { 2635 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2636 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2637 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2638 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2639 2640 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2641 } 2642 2643 return 0; 2644 } 2645 2646 /* 2647 * ha->hardware_lock supposed to be held on entry. We have already made sure 2648 * that there is sufficient amount of request entries to not drop it. 2649 */ 2650 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2651 { 2652 int cnt; 2653 struct dsd64 *cur_dsd; 2654 2655 /* Build continuation packets */ 2656 while (prm->seg_cnt > 0) { 2657 cont_a64_entry_t *cont_pkt64 = 2658 (cont_a64_entry_t *)qlt_get_req_pkt( 2659 prm->cmd->qpair->req); 2660 2661 /* 2662 * Make sure that from cont_pkt64 none of 2663 * 64-bit specific fields used for 32-bit 2664 * addressing. Cast to (cont_entry_t *) for 2665 * that. 2666 */ 2667 2668 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2669 2670 cont_pkt64->entry_count = 1; 2671 cont_pkt64->sys_define = 0; 2672 2673 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2674 cur_dsd = cont_pkt64->dsd; 2675 2676 /* Load continuation entry data segments */ 2677 for (cnt = 0; 2678 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2679 cnt++, prm->seg_cnt--) { 2680 append_dsd64(&cur_dsd, prm->sg); 2681 prm->sg = sg_next(prm->sg); 2682 } 2683 } 2684 } 2685 2686 /* 2687 * ha->hardware_lock supposed to be held on entry. We have already made sure 2688 * that there is sufficient amount of request entries to not drop it. 2689 */ 2690 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2691 { 2692 int cnt; 2693 struct dsd64 *cur_dsd; 2694 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2695 2696 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2697 2698 /* Setup packet address segment pointer */ 2699 cur_dsd = &pkt24->u.status0.dsd; 2700 2701 /* Set total data segment count */ 2702 if (prm->seg_cnt) 2703 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2704 2705 if (prm->seg_cnt == 0) { 2706 /* No data transfer */ 2707 cur_dsd->address = 0; 2708 cur_dsd->length = 0; 2709 return; 2710 } 2711 2712 /* If scatter gather */ 2713 2714 /* Load command entry data segments */ 2715 for (cnt = 0; 2716 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2717 cnt++, prm->seg_cnt--) { 2718 append_dsd64(&cur_dsd, prm->sg); 2719 prm->sg = sg_next(prm->sg); 2720 } 2721 2722 qlt_load_cont_data_segments(prm); 2723 } 2724 2725 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2726 { 2727 return cmd->bufflen > 0; 2728 } 2729 2730 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2731 { 2732 struct qla_tgt_cmd *cmd; 2733 struct scsi_qla_host *vha; 2734 2735 /* asc 0x10=dif error */ 2736 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2737 cmd = prm->cmd; 2738 vha = cmd->vha; 2739 /* ASCQ */ 2740 switch (prm->sense_buffer[13]) { 2741 case 1: 2742 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2743 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2744 "se_cmd=%p tag[%x]", 2745 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2746 cmd->atio.u.isp24.exchange_addr); 2747 break; 2748 case 2: 2749 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2750 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2751 "se_cmd=%p tag[%x]", 2752 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2753 cmd->atio.u.isp24.exchange_addr); 2754 break; 2755 case 3: 2756 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2757 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2758 "se_cmd=%p tag[%x]", 2759 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2760 cmd->atio.u.isp24.exchange_addr); 2761 break; 2762 default: 2763 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2764 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2765 "se_cmd=%p tag[%x]", 2766 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2767 cmd->atio.u.isp24.exchange_addr); 2768 break; 2769 } 2770 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2771 } 2772 } 2773 2774 /* 2775 * Called without ha->hardware_lock held 2776 */ 2777 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2778 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2779 uint32_t *full_req_cnt) 2780 { 2781 struct se_cmd *se_cmd = &cmd->se_cmd; 2782 struct qla_qpair *qpair = cmd->qpair; 2783 2784 prm->cmd = cmd; 2785 prm->tgt = cmd->tgt; 2786 prm->pkt = NULL; 2787 prm->rq_result = scsi_status; 2788 prm->sense_buffer = &cmd->sense_buffer[0]; 2789 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2790 prm->sg = NULL; 2791 prm->seg_cnt = -1; 2792 prm->req_cnt = 1; 2793 prm->residual = 0; 2794 prm->add_status_pkt = 0; 2795 prm->prot_sg = NULL; 2796 prm->prot_seg_cnt = 0; 2797 prm->tot_dsds = 0; 2798 2799 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2800 if (qlt_pci_map_calc_cnt(prm) != 0) 2801 return -EAGAIN; 2802 } 2803 2804 *full_req_cnt = prm->req_cnt; 2805 2806 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2807 prm->residual = se_cmd->residual_count; 2808 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2809 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2810 prm->residual, se_cmd->tag, 2811 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2812 cmd->bufflen, prm->rq_result); 2813 prm->rq_result |= SS_RESIDUAL_UNDER; 2814 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2815 prm->residual = se_cmd->residual_count; 2816 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2817 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2818 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2819 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2820 prm->rq_result |= SS_RESIDUAL_OVER; 2821 } 2822 2823 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2824 /* 2825 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2826 * ignored in *xmit_response() below 2827 */ 2828 if (qlt_has_data(cmd)) { 2829 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2830 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2831 (prm->rq_result != 0))) { 2832 prm->add_status_pkt = 1; 2833 (*full_req_cnt)++; 2834 } 2835 } 2836 } 2837 2838 return 0; 2839 } 2840 2841 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2842 int sending_sense) 2843 { 2844 if (cmd->qpair->enable_class_2) 2845 return 0; 2846 2847 if (sending_sense) 2848 return cmd->conf_compl_supported; 2849 else 2850 return cmd->qpair->enable_explicit_conf && 2851 cmd->conf_compl_supported; 2852 } 2853 2854 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2855 struct qla_tgt_prm *prm) 2856 { 2857 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2858 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2859 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2860 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2861 ctio->u.status0.flags |= cpu_to_le16( 2862 CTIO7_FLAGS_EXPLICIT_CONFORM | 2863 CTIO7_FLAGS_CONFORM_REQ); 2864 } 2865 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2866 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2867 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2868 int i; 2869 2870 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2871 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2872 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2873 "Skipping EXPLICIT_CONFORM and " 2874 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2875 "non GOOD status\n"); 2876 goto skip_explict_conf; 2877 } 2878 ctio->u.status1.flags |= cpu_to_le16( 2879 CTIO7_FLAGS_EXPLICIT_CONFORM | 2880 CTIO7_FLAGS_CONFORM_REQ); 2881 } 2882 skip_explict_conf: 2883 ctio->u.status1.flags &= 2884 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2885 ctio->u.status1.flags |= 2886 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2887 ctio->u.status1.scsi_status |= 2888 cpu_to_le16(SS_SENSE_LEN_VALID); 2889 ctio->u.status1.sense_length = 2890 cpu_to_le16(prm->sense_buffer_len); 2891 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2892 uint32_t v; 2893 2894 v = get_unaligned_be32( 2895 &((uint32_t *)prm->sense_buffer)[i]); 2896 put_unaligned_le32(v, 2897 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2898 } 2899 qlt_print_dif_err(prm); 2900 2901 } else { 2902 ctio->u.status1.flags &= 2903 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2904 ctio->u.status1.flags |= 2905 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2906 ctio->u.status1.sense_length = 0; 2907 memset(ctio->u.status1.sense_data, 0, 2908 sizeof(ctio->u.status1.sense_data)); 2909 } 2910 2911 /* Sense with len > 24, is it possible ??? */ 2912 } 2913 2914 static inline int 2915 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2916 { 2917 switch (se_cmd->prot_op) { 2918 case TARGET_PROT_DOUT_INSERT: 2919 case TARGET_PROT_DIN_STRIP: 2920 if (ql2xenablehba_err_chk >= 1) 2921 return 1; 2922 break; 2923 case TARGET_PROT_DOUT_PASS: 2924 case TARGET_PROT_DIN_PASS: 2925 if (ql2xenablehba_err_chk >= 2) 2926 return 1; 2927 break; 2928 case TARGET_PROT_DIN_INSERT: 2929 case TARGET_PROT_DOUT_STRIP: 2930 return 1; 2931 default: 2932 break; 2933 } 2934 return 0; 2935 } 2936 2937 static inline int 2938 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2939 { 2940 switch (se_cmd->prot_op) { 2941 case TARGET_PROT_DIN_INSERT: 2942 case TARGET_PROT_DOUT_INSERT: 2943 case TARGET_PROT_DIN_STRIP: 2944 case TARGET_PROT_DOUT_STRIP: 2945 case TARGET_PROT_DIN_PASS: 2946 case TARGET_PROT_DOUT_PASS: 2947 return 1; 2948 default: 2949 return 0; 2950 } 2951 return 0; 2952 } 2953 2954 /* 2955 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2956 */ 2957 static void 2958 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2959 uint16_t *pfw_prot_opts) 2960 { 2961 struct se_cmd *se_cmd = &cmd->se_cmd; 2962 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2963 scsi_qla_host_t *vha = cmd->tgt->vha; 2964 struct qla_hw_data *ha = vha->hw; 2965 uint32_t t32 = 0; 2966 2967 /* 2968 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2969 * have been immplemented by TCM, before AppTag is avail. 2970 * Look for modesense_handlers[] 2971 */ 2972 ctx->app_tag = 0; 2973 ctx->app_tag_mask[0] = 0x0; 2974 ctx->app_tag_mask[1] = 0x0; 2975 2976 if (IS_PI_UNINIT_CAPABLE(ha)) { 2977 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2978 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2979 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2980 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2981 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2982 } 2983 2984 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2985 2986 switch (se_cmd->prot_type) { 2987 case TARGET_DIF_TYPE0_PROT: 2988 /* 2989 * No check for ql2xenablehba_err_chk, as it 2990 * would be an I/O error if hba tag generation 2991 * is not done. 2992 */ 2993 ctx->ref_tag = cpu_to_le32(lba); 2994 /* enable ALL bytes of the ref tag */ 2995 ctx->ref_tag_mask[0] = 0xff; 2996 ctx->ref_tag_mask[1] = 0xff; 2997 ctx->ref_tag_mask[2] = 0xff; 2998 ctx->ref_tag_mask[3] = 0xff; 2999 break; 3000 case TARGET_DIF_TYPE1_PROT: 3001 /* 3002 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3003 * REF tag, and 16 bit app tag. 3004 */ 3005 ctx->ref_tag = cpu_to_le32(lba); 3006 if (!qla_tgt_ref_mask_check(se_cmd) || 3007 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3008 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3009 break; 3010 } 3011 /* enable ALL bytes of the ref tag */ 3012 ctx->ref_tag_mask[0] = 0xff; 3013 ctx->ref_tag_mask[1] = 0xff; 3014 ctx->ref_tag_mask[2] = 0xff; 3015 ctx->ref_tag_mask[3] = 0xff; 3016 break; 3017 case TARGET_DIF_TYPE2_PROT: 3018 /* 3019 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3020 * tag has to match LBA in CDB + N 3021 */ 3022 ctx->ref_tag = cpu_to_le32(lba); 3023 if (!qla_tgt_ref_mask_check(se_cmd) || 3024 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3025 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3026 break; 3027 } 3028 /* enable ALL bytes of the ref tag */ 3029 ctx->ref_tag_mask[0] = 0xff; 3030 ctx->ref_tag_mask[1] = 0xff; 3031 ctx->ref_tag_mask[2] = 0xff; 3032 ctx->ref_tag_mask[3] = 0xff; 3033 break; 3034 case TARGET_DIF_TYPE3_PROT: 3035 /* For TYPE 3 protection: 16 bit GUARD only */ 3036 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3037 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3038 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3039 break; 3040 } 3041 } 3042 3043 static inline int 3044 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3045 { 3046 struct dsd64 *cur_dsd; 3047 uint32_t transfer_length = 0; 3048 uint32_t data_bytes; 3049 uint32_t dif_bytes; 3050 uint8_t bundling = 1; 3051 struct crc_context *crc_ctx_pkt = NULL; 3052 struct qla_hw_data *ha; 3053 struct ctio_crc2_to_fw *pkt; 3054 dma_addr_t crc_ctx_dma; 3055 uint16_t fw_prot_opts = 0; 3056 struct qla_tgt_cmd *cmd = prm->cmd; 3057 struct se_cmd *se_cmd = &cmd->se_cmd; 3058 uint32_t h; 3059 struct atio_from_isp *atio = &prm->cmd->atio; 3060 struct qla_tc_param tc; 3061 uint16_t t16; 3062 scsi_qla_host_t *vha = cmd->vha; 3063 3064 ha = vha->hw; 3065 3066 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3067 prm->pkt = pkt; 3068 memset(pkt, 0, sizeof(*pkt)); 3069 3070 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3071 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3072 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3073 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3074 3075 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3076 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3077 bundling = 0; 3078 3079 /* Compute dif len and adjust data len to incude protection */ 3080 data_bytes = cmd->bufflen; 3081 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3082 3083 switch (se_cmd->prot_op) { 3084 case TARGET_PROT_DIN_INSERT: 3085 case TARGET_PROT_DOUT_STRIP: 3086 transfer_length = data_bytes; 3087 if (cmd->prot_sg_cnt) 3088 data_bytes += dif_bytes; 3089 break; 3090 case TARGET_PROT_DIN_STRIP: 3091 case TARGET_PROT_DOUT_INSERT: 3092 case TARGET_PROT_DIN_PASS: 3093 case TARGET_PROT_DOUT_PASS: 3094 transfer_length = data_bytes + dif_bytes; 3095 break; 3096 default: 3097 BUG(); 3098 break; 3099 } 3100 3101 if (!qlt_hba_err_chk_enabled(se_cmd)) 3102 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3103 /* HBA error checking enabled */ 3104 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3105 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3106 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3107 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3108 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3109 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3110 } 3111 3112 switch (se_cmd->prot_op) { 3113 case TARGET_PROT_DIN_INSERT: 3114 case TARGET_PROT_DOUT_INSERT: 3115 fw_prot_opts |= PO_MODE_DIF_INSERT; 3116 break; 3117 case TARGET_PROT_DIN_STRIP: 3118 case TARGET_PROT_DOUT_STRIP: 3119 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3120 break; 3121 case TARGET_PROT_DIN_PASS: 3122 case TARGET_PROT_DOUT_PASS: 3123 fw_prot_opts |= PO_MODE_DIF_PASS; 3124 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3125 break; 3126 default:/* Normal Request */ 3127 fw_prot_opts |= PO_MODE_DIF_PASS; 3128 break; 3129 } 3130 3131 /* ---- PKT ---- */ 3132 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3133 pkt->entry_type = CTIO_CRC2; 3134 pkt->entry_count = 1; 3135 pkt->vp_index = cmd->vp_idx; 3136 3137 h = qlt_make_handle(qpair); 3138 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3139 /* 3140 * CTIO type 7 from the firmware doesn't provide a way to 3141 * know the initiator's LOOP ID, hence we can't find 3142 * the session and, so, the command. 3143 */ 3144 return -EAGAIN; 3145 } else 3146 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3147 3148 pkt->handle = make_handle(qpair->req->id, h); 3149 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3150 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3151 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3152 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3153 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3154 3155 /* silence compile warning */ 3156 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3157 pkt->ox_id = cpu_to_le16(t16); 3158 3159 t16 = (atio->u.isp24.attr << 9); 3160 pkt->flags |= cpu_to_le16(t16); 3161 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3162 3163 /* Set transfer direction */ 3164 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3165 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3166 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3167 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3168 3169 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3170 /* Fibre channel byte count */ 3171 pkt->transfer_length = cpu_to_le32(transfer_length); 3172 3173 /* ----- CRC context -------- */ 3174 3175 /* Allocate CRC context from global pool */ 3176 crc_ctx_pkt = cmd->ctx = 3177 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3178 3179 if (!crc_ctx_pkt) 3180 goto crc_queuing_error; 3181 3182 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3183 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3184 3185 /* Set handle */ 3186 crc_ctx_pkt->handle = pkt->handle; 3187 3188 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3189 3190 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3191 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3192 3193 if (!bundling) { 3194 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3195 } else { 3196 /* 3197 * Configure Bundling if we need to fetch interlaving 3198 * protection PCI accesses 3199 */ 3200 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3201 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3202 crc_ctx_pkt->u.bundling.dseg_count = 3203 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3204 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3205 } 3206 3207 /* Finish the common fields of CRC pkt */ 3208 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3209 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3210 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3211 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3212 3213 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3214 tc.vha = vha; 3215 tc.blk_sz = cmd->blk_sz; 3216 tc.bufflen = cmd->bufflen; 3217 tc.sg = cmd->sg; 3218 tc.prot_sg = cmd->prot_sg; 3219 tc.ctx = crc_ctx_pkt; 3220 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3221 3222 /* Walks data segments */ 3223 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3224 3225 if (!bundling && prm->prot_seg_cnt) { 3226 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3227 prm->tot_dsds, &tc)) 3228 goto crc_queuing_error; 3229 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3230 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3231 goto crc_queuing_error; 3232 3233 if (bundling && prm->prot_seg_cnt) { 3234 /* Walks dif segments */ 3235 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3236 3237 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3238 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3239 prm->prot_seg_cnt, cmd)) 3240 goto crc_queuing_error; 3241 } 3242 return QLA_SUCCESS; 3243 3244 crc_queuing_error: 3245 /* Cleanup will be performed by the caller */ 3246 qpair->req->outstanding_cmds[h] = NULL; 3247 3248 return QLA_FUNCTION_FAILED; 3249 } 3250 3251 /* 3252 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3253 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3254 */ 3255 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3256 uint8_t scsi_status) 3257 { 3258 struct scsi_qla_host *vha = cmd->vha; 3259 struct qla_qpair *qpair = cmd->qpair; 3260 struct ctio7_to_24xx *pkt; 3261 struct qla_tgt_prm prm; 3262 uint32_t full_req_cnt = 0; 3263 unsigned long flags = 0; 3264 int res; 3265 3266 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3267 (cmd->sess && cmd->sess->deleted)) { 3268 cmd->state = QLA_TGT_STATE_PROCESSED; 3269 return 0; 3270 } 3271 3272 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3273 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3274 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3275 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3276 &cmd->se_cmd, qpair->id); 3277 3278 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3279 &full_req_cnt); 3280 if (unlikely(res != 0)) { 3281 return res; 3282 } 3283 3284 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3285 3286 if (xmit_type == QLA_TGT_XMIT_STATUS) 3287 qpair->tgt_counters.core_qla_snd_status++; 3288 else 3289 qpair->tgt_counters.core_qla_que_buf++; 3290 3291 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3292 /* 3293 * Either the port is not online or this request was from 3294 * previous life, just abort the processing. 3295 */ 3296 cmd->state = QLA_TGT_STATE_PROCESSED; 3297 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3298 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3299 vha->flags.online, qla2x00_reset_active(vha), 3300 cmd->reset_count, qpair->chip_reset); 3301 res = 0; 3302 goto out_unmap_unlock; 3303 } 3304 3305 /* Does F/W have an IOCBs for this request */ 3306 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3307 if (unlikely(res)) 3308 goto out_unmap_unlock; 3309 3310 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3311 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3312 else 3313 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3314 if (unlikely(res != 0)) { 3315 qpair->req->cnt += full_req_cnt; 3316 goto out_unmap_unlock; 3317 } 3318 3319 pkt = (struct ctio7_to_24xx *)prm.pkt; 3320 3321 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3322 pkt->u.status0.flags |= 3323 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3324 CTIO7_FLAGS_STATUS_MODE_0); 3325 3326 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3327 qlt_load_data_segments(&prm); 3328 3329 if (prm.add_status_pkt == 0) { 3330 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3331 pkt->u.status0.scsi_status = 3332 cpu_to_le16(prm.rq_result); 3333 if (!cmd->edif) 3334 pkt->u.status0.residual = 3335 cpu_to_le32(prm.residual); 3336 3337 pkt->u.status0.flags |= cpu_to_le16( 3338 CTIO7_FLAGS_SEND_STATUS); 3339 if (qlt_need_explicit_conf(cmd, 0)) { 3340 pkt->u.status0.flags |= 3341 cpu_to_le16( 3342 CTIO7_FLAGS_EXPLICIT_CONFORM | 3343 CTIO7_FLAGS_CONFORM_REQ); 3344 } 3345 } 3346 3347 } else { 3348 /* 3349 * We have already made sure that there is sufficient 3350 * amount of request entries to not drop HW lock in 3351 * req_pkt(). 3352 */ 3353 struct ctio7_to_24xx *ctio = 3354 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3355 qpair->req); 3356 3357 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3358 "Building additional status packet 0x%p.\n", 3359 ctio); 3360 3361 /* 3362 * T10Dif: ctio_crc2_to_fw overlay ontop of 3363 * ctio7_to_24xx 3364 */ 3365 memcpy(ctio, pkt, sizeof(*ctio)); 3366 /* reset back to CTIO7 */ 3367 ctio->entry_count = 1; 3368 ctio->entry_type = CTIO_TYPE7; 3369 ctio->dseg_count = 0; 3370 ctio->u.status1.flags &= ~cpu_to_le16( 3371 CTIO7_FLAGS_DATA_IN); 3372 3373 /* Real finish is ctio_m1's finish */ 3374 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3375 pkt->u.status0.flags |= cpu_to_le16( 3376 CTIO7_FLAGS_DONT_RET_CTIO); 3377 3378 /* qlt_24xx_init_ctio_to_isp will correct 3379 * all neccessary fields that's part of CTIO7. 3380 * There should be no residual of CTIO-CRC2 data. 3381 */ 3382 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3383 &prm); 3384 } 3385 } else 3386 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3387 3388 3389 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3390 cmd->cmd_sent_to_fw = 1; 3391 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3392 3393 /* Memory Barrier */ 3394 wmb(); 3395 if (qpair->reqq_start_iocbs) 3396 qpair->reqq_start_iocbs(qpair); 3397 else 3398 qla2x00_start_iocbs(vha, qpair->req); 3399 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3400 3401 return 0; 3402 3403 out_unmap_unlock: 3404 qlt_unmap_sg(vha, cmd); 3405 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3406 3407 return res; 3408 } 3409 EXPORT_SYMBOL(qlt_xmit_response); 3410 3411 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3412 { 3413 struct ctio7_to_24xx *pkt; 3414 struct scsi_qla_host *vha = cmd->vha; 3415 struct qla_tgt *tgt = cmd->tgt; 3416 struct qla_tgt_prm prm; 3417 unsigned long flags = 0; 3418 int res = 0; 3419 struct qla_qpair *qpair = cmd->qpair; 3420 3421 memset(&prm, 0, sizeof(prm)); 3422 prm.cmd = cmd; 3423 prm.tgt = tgt; 3424 prm.sg = NULL; 3425 prm.req_cnt = 1; 3426 3427 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3428 (cmd->sess && cmd->sess->deleted)) { 3429 /* 3430 * Either the port is not online or this request was from 3431 * previous life, just abort the processing. 3432 */ 3433 cmd->aborted = 1; 3434 cmd->write_data_transferred = 0; 3435 cmd->state = QLA_TGT_STATE_DATA_IN; 3436 vha->hw->tgt.tgt_ops->handle_data(cmd); 3437 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3438 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3439 vha->flags.online, qla2x00_reset_active(vha), 3440 cmd->reset_count, qpair->chip_reset); 3441 return 0; 3442 } 3443 3444 /* Calculate number of entries and segments required */ 3445 if (qlt_pci_map_calc_cnt(&prm) != 0) 3446 return -EAGAIN; 3447 3448 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3449 /* Does F/W have an IOCBs for this request */ 3450 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3451 if (res != 0) 3452 goto out_unlock_free_unmap; 3453 if (cmd->se_cmd.prot_op) 3454 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3455 else 3456 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3457 3458 if (unlikely(res != 0)) { 3459 qpair->req->cnt += prm.req_cnt; 3460 goto out_unlock_free_unmap; 3461 } 3462 3463 pkt = (struct ctio7_to_24xx *)prm.pkt; 3464 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3465 CTIO7_FLAGS_STATUS_MODE_0); 3466 3467 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3468 qlt_load_data_segments(&prm); 3469 3470 cmd->state = QLA_TGT_STATE_NEED_DATA; 3471 cmd->cmd_sent_to_fw = 1; 3472 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3473 3474 /* Memory Barrier */ 3475 wmb(); 3476 if (qpair->reqq_start_iocbs) 3477 qpair->reqq_start_iocbs(qpair); 3478 else 3479 qla2x00_start_iocbs(vha, qpair->req); 3480 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3481 3482 return res; 3483 3484 out_unlock_free_unmap: 3485 qlt_unmap_sg(vha, cmd); 3486 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3487 3488 return res; 3489 } 3490 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3491 3492 3493 /* 3494 * it is assumed either hardware_lock or qpair lock is held. 3495 */ 3496 static void 3497 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3498 struct ctio_crc_from_fw *sts) 3499 { 3500 uint8_t *ap = &sts->actual_dif[0]; 3501 uint8_t *ep = &sts->expected_dif[0]; 3502 uint64_t lba = cmd->se_cmd.t_task_lba; 3503 uint8_t scsi_status, sense_key, asc, ascq; 3504 unsigned long flags; 3505 struct scsi_qla_host *vha = cmd->vha; 3506 3507 cmd->trc_flags |= TRC_DIF_ERR; 3508 3509 cmd->a_guard = get_unaligned_be16(ap + 0); 3510 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3511 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3512 3513 cmd->e_guard = get_unaligned_be16(ep + 0); 3514 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3515 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3516 3517 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3518 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3519 3520 scsi_status = sense_key = asc = ascq = 0; 3521 3522 /* check appl tag */ 3523 if (cmd->e_app_tag != cmd->a_app_tag) { 3524 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3525 "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]", 3526 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3527 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3528 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3529 cmd->atio.u.isp24.fcp_hdr.ox_id); 3530 3531 cmd->dif_err_code = DIF_ERR_APP; 3532 scsi_status = SAM_STAT_CHECK_CONDITION; 3533 sense_key = ABORTED_COMMAND; 3534 asc = 0x10; 3535 ascq = 0x2; 3536 } 3537 3538 /* check ref tag */ 3539 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3540 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3541 "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] ", 3542 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3543 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3544 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3545 cmd->atio.u.isp24.fcp_hdr.ox_id); 3546 3547 cmd->dif_err_code = DIF_ERR_REF; 3548 scsi_status = SAM_STAT_CHECK_CONDITION; 3549 sense_key = ABORTED_COMMAND; 3550 asc = 0x10; 3551 ascq = 0x3; 3552 goto out; 3553 } 3554 3555 /* check guard */ 3556 if (cmd->e_guard != cmd->a_guard) { 3557 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3558 "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]", 3559 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3560 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3561 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3562 cmd->atio.u.isp24.fcp_hdr.ox_id); 3563 3564 cmd->dif_err_code = DIF_ERR_GRD; 3565 scsi_status = SAM_STAT_CHECK_CONDITION; 3566 sense_key = ABORTED_COMMAND; 3567 asc = 0x10; 3568 ascq = 0x1; 3569 } 3570 out: 3571 switch (cmd->state) { 3572 case QLA_TGT_STATE_NEED_DATA: 3573 /* handle_data will load DIF error code */ 3574 cmd->state = QLA_TGT_STATE_DATA_IN; 3575 vha->hw->tgt.tgt_ops->handle_data(cmd); 3576 break; 3577 default: 3578 spin_lock_irqsave(&cmd->cmd_lock, flags); 3579 if (cmd->aborted) { 3580 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3581 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3582 break; 3583 } 3584 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3585 3586 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3587 ascq); 3588 /* assume scsi status gets out on the wire. 3589 * Will not wait for completion. 3590 */ 3591 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3592 break; 3593 } 3594 } 3595 3596 /* If hardware_lock held on entry, might drop it, then reaquire */ 3597 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3598 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3599 struct imm_ntfy_from_isp *ntfy) 3600 { 3601 struct nack_to_isp *nack; 3602 struct qla_hw_data *ha = vha->hw; 3603 request_t *pkt; 3604 int ret = 0; 3605 3606 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3607 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3608 3609 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3610 if (pkt == NULL) { 3611 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3612 "qla_target(%d): %s failed: unable to allocate " 3613 "request packet\n", vha->vp_idx, __func__); 3614 return -ENOMEM; 3615 } 3616 3617 pkt->entry_type = NOTIFY_ACK_TYPE; 3618 pkt->entry_count = 1; 3619 pkt->handle = QLA_TGT_SKIP_HANDLE; 3620 3621 nack = (struct nack_to_isp *)pkt; 3622 nack->ox_id = ntfy->ox_id; 3623 3624 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3625 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3626 nack->u.isp24.flags = ntfy->u.isp24.flags & 3627 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3628 } 3629 3630 /* terminate */ 3631 nack->u.isp24.flags |= 3632 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3633 3634 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3635 nack->u.isp24.status = ntfy->u.isp24.status; 3636 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3637 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3638 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3639 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3640 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3641 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3642 3643 qla2x00_start_iocbs(vha, vha->req); 3644 return ret; 3645 } 3646 3647 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3648 struct imm_ntfy_from_isp *imm, int ha_locked) 3649 { 3650 int rc; 3651 3652 WARN_ON_ONCE(!ha_locked); 3653 rc = __qlt_send_term_imm_notif(vha, imm); 3654 pr_debug("rc = %d\n", rc); 3655 } 3656 3657 /* 3658 * If hardware_lock held on entry, might drop it, then reaquire 3659 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3660 */ 3661 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3662 struct qla_tgt_cmd *cmd, 3663 struct atio_from_isp *atio) 3664 { 3665 struct scsi_qla_host *vha = qpair->vha; 3666 struct ctio7_to_24xx *ctio24; 3667 struct qla_hw_data *ha = vha->hw; 3668 request_t *pkt; 3669 int ret = 0; 3670 uint16_t temp; 3671 3672 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3673 3674 if (cmd) 3675 vha = cmd->vha; 3676 3677 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3678 if (pkt == NULL) { 3679 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3680 "qla_target(%d): %s failed: unable to allocate " 3681 "request packet\n", vha->vp_idx, __func__); 3682 return -ENOMEM; 3683 } 3684 3685 if (cmd != NULL) { 3686 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3687 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3688 "qla_target(%d): Terminating cmd %p with " 3689 "incorrect state %d\n", vha->vp_idx, cmd, 3690 cmd->state); 3691 } else 3692 ret = 1; 3693 } 3694 3695 qpair->tgt_counters.num_term_xchg_sent++; 3696 pkt->entry_count = 1; 3697 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3698 3699 ctio24 = (struct ctio7_to_24xx *)pkt; 3700 ctio24->entry_type = CTIO_TYPE7; 3701 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3702 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3703 ctio24->vp_index = vha->vp_idx; 3704 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3705 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3706 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3707 CTIO7_FLAGS_TERMINATE; 3708 ctio24->u.status1.flags = cpu_to_le16(temp); 3709 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3710 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3711 3712 /* Memory Barrier */ 3713 wmb(); 3714 if (qpair->reqq_start_iocbs) 3715 qpair->reqq_start_iocbs(qpair); 3716 else 3717 qla2x00_start_iocbs(vha, qpair->req); 3718 return ret; 3719 } 3720 3721 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3722 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3723 int ul_abort) 3724 { 3725 struct scsi_qla_host *vha; 3726 unsigned long flags = 0; 3727 int rc; 3728 3729 /* why use different vha? NPIV */ 3730 if (cmd) 3731 vha = cmd->vha; 3732 else 3733 vha = qpair->vha; 3734 3735 if (ha_locked) { 3736 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3737 if (rc == -ENOMEM) 3738 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3739 goto done; 3740 } 3741 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3742 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3743 if (rc == -ENOMEM) 3744 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3745 3746 done: 3747 if (cmd && !ul_abort && !cmd->aborted) { 3748 if (cmd->sg_mapped) 3749 qlt_unmap_sg(vha, cmd); 3750 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3751 } 3752 3753 if (!ha_locked) 3754 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3755 3756 return; 3757 } 3758 3759 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3760 { 3761 struct list_head free_list; 3762 struct qla_tgt_cmd *cmd, *tcmd; 3763 3764 vha->hw->tgt.leak_exchg_thresh_hold = 3765 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3766 3767 cmd = tcmd = NULL; 3768 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3769 INIT_LIST_HEAD(&free_list); 3770 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3771 3772 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3773 list_del(&cmd->cmd_list); 3774 /* This cmd was never sent to TCM. There is no need 3775 * to schedule free or call free_cmd 3776 */ 3777 qlt_free_cmd(cmd); 3778 vha->hw->tgt.num_qfull_cmds_alloc--; 3779 } 3780 } 3781 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3782 } 3783 3784 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3785 { 3786 uint32_t total_leaked; 3787 3788 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3789 3790 if (vha->hw->tgt.leak_exchg_thresh_hold && 3791 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3792 3793 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3794 "Chip reset due to exchange starvation: %d/%d.\n", 3795 total_leaked, vha->hw->cur_fw_xcb_count); 3796 3797 if (IS_P3P_TYPE(vha->hw)) 3798 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3799 else 3800 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3801 qla2xxx_wake_dpc(vha); 3802 } 3803 3804 } 3805 3806 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3807 { 3808 struct qla_tgt *tgt = cmd->tgt; 3809 struct scsi_qla_host *vha = tgt->vha; 3810 struct se_cmd *se_cmd = &cmd->se_cmd; 3811 unsigned long flags; 3812 3813 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3814 "qla_target(%d): terminating exchange for aborted cmd=%p " 3815 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3816 se_cmd->tag); 3817 3818 spin_lock_irqsave(&cmd->cmd_lock, flags); 3819 if (cmd->aborted) { 3820 if (cmd->sg_mapped) 3821 qlt_unmap_sg(vha, cmd); 3822 3823 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3824 /* 3825 * It's normal to see 2 calls in this path: 3826 * 1) XFER Rdy completion + CMD_T_ABORT 3827 * 2) TCM TMR - drain_state_list 3828 */ 3829 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3830 "multiple abort. %p transport_state %x, t_state %x, " 3831 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3832 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3833 return -EIO; 3834 } 3835 cmd->aborted = 1; 3836 cmd->trc_flags |= TRC_ABORT; 3837 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3838 3839 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3840 return 0; 3841 } 3842 EXPORT_SYMBOL(qlt_abort_cmd); 3843 3844 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3845 { 3846 struct fc_port *sess = cmd->sess; 3847 3848 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3849 "%s: se_cmd[%p] ox_id %04x\n", 3850 __func__, &cmd->se_cmd, 3851 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3852 3853 BUG_ON(cmd->cmd_in_wq); 3854 3855 if (!cmd->q_full) 3856 qlt_decr_num_pend_cmds(cmd->vha); 3857 3858 BUG_ON(cmd->sg_mapped); 3859 cmd->jiffies_at_free = get_jiffies_64(); 3860 3861 if (!sess || !sess->se_sess) { 3862 WARN_ON(1); 3863 return; 3864 } 3865 cmd->jiffies_at_free = get_jiffies_64(); 3866 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3867 } 3868 EXPORT_SYMBOL(qlt_free_cmd); 3869 3870 /* 3871 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3872 */ 3873 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3874 struct qla_tgt_cmd *cmd, uint32_t status) 3875 { 3876 int term = 0; 3877 struct scsi_qla_host *vha = qpair->vha; 3878 3879 if (cmd->se_cmd.prot_op) 3880 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3881 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3882 "se_cmd=%p tag[%x] op %#x/%s", 3883 cmd->lba, cmd->lba, 3884 cmd->num_blks, &cmd->se_cmd, 3885 cmd->atio.u.isp24.exchange_addr, 3886 cmd->se_cmd.prot_op, 3887 prot_op_str(cmd->se_cmd.prot_op)); 3888 3889 if (ctio != NULL) { 3890 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3891 3892 term = !(c->flags & 3893 cpu_to_le16(OF_TERM_EXCH)); 3894 } else 3895 term = 1; 3896 3897 if (term) 3898 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3899 3900 return term; 3901 } 3902 3903 3904 /* ha->hardware_lock supposed to be held on entry */ 3905 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3906 struct rsp_que *rsp, uint32_t handle, void *ctio) 3907 { 3908 void *cmd = NULL; 3909 struct req_que *req; 3910 int qid = GET_QID(handle); 3911 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3912 3913 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3914 return NULL; 3915 3916 if (qid == rsp->req->id) { 3917 req = rsp->req; 3918 } else if (vha->hw->req_q_map[qid]) { 3919 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3920 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3921 vha->vp_idx, rsp->id, handle); 3922 req = vha->hw->req_q_map[qid]; 3923 } else { 3924 return NULL; 3925 } 3926 3927 h &= QLA_CMD_HANDLE_MASK; 3928 3929 if (h != QLA_TGT_NULL_HANDLE) { 3930 if (unlikely(h >= req->num_outstanding_cmds)) { 3931 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3932 "qla_target(%d): Wrong handle %x received\n", 3933 vha->vp_idx, handle); 3934 return NULL; 3935 } 3936 3937 cmd = req->outstanding_cmds[h]; 3938 if (unlikely(cmd == NULL)) { 3939 ql_dbg(ql_dbg_async, vha, 0xe053, 3940 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3941 vha->vp_idx, handle, req->id, rsp->id); 3942 return NULL; 3943 } 3944 req->outstanding_cmds[h] = NULL; 3945 } else if (ctio != NULL) { 3946 /* We can't get loop ID from CTIO7 */ 3947 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3948 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3949 "support NULL handles\n", vha->vp_idx); 3950 return NULL; 3951 } 3952 3953 return cmd; 3954 } 3955 3956 /* 3957 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3958 */ 3959 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3960 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3961 { 3962 struct qla_hw_data *ha = vha->hw; 3963 struct se_cmd *se_cmd; 3964 struct qla_tgt_cmd *cmd; 3965 struct qla_qpair *qpair = rsp->qpair; 3966 3967 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3968 /* That could happen only in case of an error/reset/abort */ 3969 if (status != CTIO_SUCCESS) { 3970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3971 "Intermediate CTIO received" 3972 " (status %x)\n", status); 3973 } 3974 return; 3975 } 3976 3977 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3978 if (cmd == NULL) 3979 return; 3980 3981 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3982 cmd->sess) { 3983 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 3984 (struct ctio7_from_24xx *)ctio); 3985 } 3986 3987 se_cmd = &cmd->se_cmd; 3988 cmd->cmd_sent_to_fw = 0; 3989 3990 qlt_unmap_sg(vha, cmd); 3991 3992 if (unlikely(status != CTIO_SUCCESS)) { 3993 switch (status & 0xFFFF) { 3994 case CTIO_INVALID_RX_ID: 3995 if (printk_ratelimit()) 3996 dev_info(&vha->hw->pdev->dev, 3997 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3998 vha->vp_idx, cmd->atio.u.isp24.attr, 3999 ((cmd->ctio_flags >> 9) & 0xf), 4000 cmd->ctio_flags); 4001 4002 break; 4003 case CTIO_LIP_RESET: 4004 case CTIO_TARGET_RESET: 4005 case CTIO_ABORTED: 4006 /* driver request abort via Terminate exchange */ 4007 case CTIO_TIMEOUT: 4008 /* They are OK */ 4009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4010 "qla_target(%d): CTIO with " 4011 "status %#x received, state %x, se_cmd %p, " 4012 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4013 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4014 status, cmd->state, se_cmd); 4015 break; 4016 4017 case CTIO_PORT_LOGGED_OUT: 4018 case CTIO_PORT_UNAVAILABLE: 4019 { 4020 int logged_out = 4021 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4022 4023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4024 "qla_target(%d): CTIO with %s status %x " 4025 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4026 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4027 status, cmd->state, se_cmd); 4028 4029 if (logged_out && cmd->sess) { 4030 /* 4031 * Session is already logged out, but we need 4032 * to notify initiator, who's not aware of this 4033 */ 4034 cmd->sess->send_els_logo = 1; 4035 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4036 "%s %d %8phC post del sess\n", 4037 __func__, __LINE__, cmd->sess->port_name); 4038 4039 qlt_schedule_sess_for_deletion(cmd->sess); 4040 } 4041 break; 4042 } 4043 case CTIO_DIF_ERROR: { 4044 struct ctio_crc_from_fw *crc = 4045 (struct ctio_crc_from_fw *)ctio; 4046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4047 "qla_target(%d): CTIO with DIF_ERROR status %x " 4048 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4049 "expect_dif[0x%llx]\n", 4050 vha->vp_idx, status, cmd->state, se_cmd, 4051 *((u64 *)&crc->actual_dif[0]), 4052 *((u64 *)&crc->expected_dif[0])); 4053 4054 qlt_handle_dif_error(qpair, cmd, ctio); 4055 return; 4056 } 4057 4058 case CTIO_FAST_AUTH_ERR: 4059 case CTIO_FAST_INCOMP_PAD_LEN: 4060 case CTIO_FAST_INVALID_REQ: 4061 case CTIO_FAST_SPI_ERR: 4062 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4063 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4064 vha->vp_idx, status, cmd->state, se_cmd); 4065 break; 4066 4067 default: 4068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4069 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4070 vha->vp_idx, status, cmd->state, se_cmd); 4071 break; 4072 } 4073 4074 4075 /* "cmd->aborted" means 4076 * cmd is already aborted/terminated, we don't 4077 * need to terminate again. The exchange is already 4078 * cleaned up/freed at FW level. Just cleanup at driver 4079 * level. 4080 */ 4081 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4082 (!cmd->aborted)) { 4083 cmd->trc_flags |= TRC_CTIO_ERR; 4084 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4085 return; 4086 } 4087 } 4088 4089 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4090 cmd->trc_flags |= TRC_CTIO_DONE; 4091 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4092 cmd->state = QLA_TGT_STATE_DATA_IN; 4093 4094 if (status == CTIO_SUCCESS) 4095 cmd->write_data_transferred = 1; 4096 4097 ha->tgt.tgt_ops->handle_data(cmd); 4098 return; 4099 } else if (cmd->aborted) { 4100 cmd->trc_flags |= TRC_CTIO_ABORTED; 4101 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4102 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4103 } else { 4104 cmd->trc_flags |= TRC_CTIO_STRANGE; 4105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4106 "qla_target(%d): A command in state (%d) should " 4107 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4108 } 4109 4110 if (unlikely(status != CTIO_SUCCESS) && 4111 !cmd->aborted) { 4112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4113 dump_stack(); 4114 } 4115 4116 ha->tgt.tgt_ops->free_cmd(cmd); 4117 } 4118 4119 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4120 uint8_t task_codes) 4121 { 4122 int fcp_task_attr; 4123 4124 switch (task_codes) { 4125 case ATIO_SIMPLE_QUEUE: 4126 fcp_task_attr = TCM_SIMPLE_TAG; 4127 break; 4128 case ATIO_HEAD_OF_QUEUE: 4129 fcp_task_attr = TCM_HEAD_TAG; 4130 break; 4131 case ATIO_ORDERED_QUEUE: 4132 fcp_task_attr = TCM_ORDERED_TAG; 4133 break; 4134 case ATIO_ACA_QUEUE: 4135 fcp_task_attr = TCM_ACA_TAG; 4136 break; 4137 case ATIO_UNTAGGED: 4138 fcp_task_attr = TCM_SIMPLE_TAG; 4139 break; 4140 default: 4141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4142 "qla_target: unknown task code %x, use ORDERED instead\n", 4143 task_codes); 4144 fcp_task_attr = TCM_ORDERED_TAG; 4145 break; 4146 } 4147 4148 return fcp_task_attr; 4149 } 4150 4151 /* 4152 * Process context for I/O path into tcm_qla2xxx code 4153 */ 4154 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4155 { 4156 scsi_qla_host_t *vha = cmd->vha; 4157 struct qla_hw_data *ha = vha->hw; 4158 struct fc_port *sess = cmd->sess; 4159 struct atio_from_isp *atio = &cmd->atio; 4160 unsigned char *cdb; 4161 unsigned long flags; 4162 uint32_t data_length; 4163 int ret, fcp_task_attr, data_dir, bidi = 0; 4164 struct qla_qpair *qpair = cmd->qpair; 4165 4166 cmd->cmd_in_wq = 0; 4167 cmd->trc_flags |= TRC_DO_WORK; 4168 4169 if (cmd->aborted) { 4170 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4171 "cmd with tag %u is aborted\n", 4172 cmd->atio.u.isp24.exchange_addr); 4173 goto out_term; 4174 } 4175 4176 spin_lock_init(&cmd->cmd_lock); 4177 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4178 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4179 4180 if (atio->u.isp24.fcp_cmnd.rddata && 4181 atio->u.isp24.fcp_cmnd.wrdata) { 4182 bidi = 1; 4183 data_dir = DMA_TO_DEVICE; 4184 } else if (atio->u.isp24.fcp_cmnd.rddata) 4185 data_dir = DMA_FROM_DEVICE; 4186 else if (atio->u.isp24.fcp_cmnd.wrdata) 4187 data_dir = DMA_TO_DEVICE; 4188 else 4189 data_dir = DMA_NONE; 4190 4191 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4192 atio->u.isp24.fcp_cmnd.task_attr); 4193 data_length = get_datalen_for_atio(atio); 4194 4195 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4196 fcp_task_attr, data_dir, bidi); 4197 if (ret != 0) 4198 goto out_term; 4199 /* 4200 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4201 */ 4202 ha->tgt.tgt_ops->put_sess(sess); 4203 return; 4204 4205 out_term: 4206 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4207 /* 4208 * cmd has not sent to target yet, so pass NULL as the second 4209 * argument to qlt_send_term_exchange() and free the memory here. 4210 */ 4211 cmd->trc_flags |= TRC_DO_WORK_ERR; 4212 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4213 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4214 4215 qlt_decr_num_pend_cmds(vha); 4216 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4217 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4218 4219 ha->tgt.tgt_ops->put_sess(sess); 4220 } 4221 4222 static void qlt_do_work(struct work_struct *work) 4223 { 4224 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4225 scsi_qla_host_t *vha = cmd->vha; 4226 unsigned long flags; 4227 4228 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4229 list_del(&cmd->cmd_list); 4230 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4231 4232 __qlt_do_work(cmd); 4233 } 4234 4235 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4236 { 4237 unsigned long flags; 4238 struct qla_hw_data *ha = vha->hw; 4239 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4240 void *node; 4241 u64 key = 0; 4242 4243 ql_log(ql_log_info, vha, 0x706c, 4244 "User update Number of Active Qpairs %d\n", 4245 ha->tgt.num_act_qpairs); 4246 4247 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4248 4249 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4250 btree_remove64(&tgt->lun_qpair_map, key); 4251 4252 ha->base_qpair->lun_cnt = 0; 4253 for (key = 0; key < ha->max_qpairs; key++) 4254 if (ha->queue_pair_map[key]) 4255 ha->queue_pair_map[key]->lun_cnt = 0; 4256 4257 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4258 } 4259 4260 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4261 struct qla_tgt_cmd *cmd) 4262 { 4263 struct qla_qpair *qpair, *qp; 4264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4265 struct qla_qpair_hint *h; 4266 4267 if (vha->flags.qpairs_available) { 4268 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4269 if (unlikely(!h)) { 4270 /* spread lun to qpair ratio evently */ 4271 int lcnt = 0, rc; 4272 struct scsi_qla_host *base_vha = 4273 pci_get_drvdata(vha->hw->pdev); 4274 4275 qpair = vha->hw->base_qpair; 4276 if (qpair->lun_cnt == 0) { 4277 qpair->lun_cnt++; 4278 h = qla_qpair_to_hint(tgt, qpair); 4279 BUG_ON(!h); 4280 rc = btree_insert64(&tgt->lun_qpair_map, 4281 cmd->unpacked_lun, h, GFP_ATOMIC); 4282 if (rc) { 4283 qpair->lun_cnt--; 4284 ql_log(ql_log_info, vha, 0xd037, 4285 "Unable to insert lun %llx into lun_qpair_map\n", 4286 cmd->unpacked_lun); 4287 } 4288 goto out; 4289 } else { 4290 lcnt = qpair->lun_cnt; 4291 } 4292 4293 h = NULL; 4294 list_for_each_entry(qp, &base_vha->qp_list, 4295 qp_list_elem) { 4296 if (qp->lun_cnt == 0) { 4297 qp->lun_cnt++; 4298 h = qla_qpair_to_hint(tgt, qp); 4299 BUG_ON(!h); 4300 rc = btree_insert64(&tgt->lun_qpair_map, 4301 cmd->unpacked_lun, h, GFP_ATOMIC); 4302 if (rc) { 4303 qp->lun_cnt--; 4304 ql_log(ql_log_info, vha, 0xd038, 4305 "Unable to insert lun %llx into lun_qpair_map\n", 4306 cmd->unpacked_lun); 4307 } 4308 qpair = qp; 4309 goto out; 4310 } else { 4311 if (qp->lun_cnt < lcnt) { 4312 lcnt = qp->lun_cnt; 4313 qpair = qp; 4314 continue; 4315 } 4316 } 4317 } 4318 BUG_ON(!qpair); 4319 qpair->lun_cnt++; 4320 h = qla_qpair_to_hint(tgt, qpair); 4321 BUG_ON(!h); 4322 rc = btree_insert64(&tgt->lun_qpair_map, 4323 cmd->unpacked_lun, h, GFP_ATOMIC); 4324 if (rc) { 4325 qpair->lun_cnt--; 4326 ql_log(ql_log_info, vha, 0xd039, 4327 "Unable to insert lun %llx into lun_qpair_map\n", 4328 cmd->unpacked_lun); 4329 } 4330 } 4331 } else { 4332 h = &tgt->qphints[0]; 4333 } 4334 out: 4335 cmd->qpair = h->qpair; 4336 cmd->se_cmd.cpuid = h->cpuid; 4337 } 4338 4339 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4340 struct fc_port *sess, 4341 struct atio_from_isp *atio) 4342 { 4343 struct qla_tgt_cmd *cmd; 4344 4345 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4346 if (!cmd) 4347 return NULL; 4348 4349 cmd->cmd_type = TYPE_TGT_CMD; 4350 memcpy(&cmd->atio, atio, sizeof(*atio)); 4351 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4352 cmd->state = QLA_TGT_STATE_NEW; 4353 cmd->tgt = vha->vha_tgt.qla_tgt; 4354 qlt_incr_num_pend_cmds(vha); 4355 cmd->vha = vha; 4356 cmd->sess = sess; 4357 cmd->loop_id = sess->loop_id; 4358 cmd->conf_compl_supported = sess->conf_compl_supported; 4359 4360 cmd->trc_flags = 0; 4361 cmd->jiffies_at_alloc = get_jiffies_64(); 4362 4363 cmd->unpacked_lun = scsilun_to_int( 4364 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4365 qlt_assign_qpair(vha, cmd); 4366 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4367 cmd->vp_idx = vha->vp_idx; 4368 cmd->edif = sess->edif.enable; 4369 4370 return cmd; 4371 } 4372 4373 /* ha->hardware_lock supposed to be held on entry */ 4374 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4375 struct atio_from_isp *atio) 4376 { 4377 struct qla_hw_data *ha = vha->hw; 4378 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4379 struct fc_port *sess; 4380 struct qla_tgt_cmd *cmd; 4381 unsigned long flags; 4382 port_id_t id; 4383 4384 if (unlikely(tgt->tgt_stop)) { 4385 ql_dbg(ql_dbg_io, vha, 0x3061, 4386 "New command while device %p is shutting down\n", tgt); 4387 return -ENODEV; 4388 } 4389 4390 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4391 if (IS_SW_RESV_ADDR(id)) 4392 return -EBUSY; 4393 4394 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4395 if (unlikely(!sess)) 4396 return -EFAULT; 4397 4398 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4399 * session deletion, but it's still in sess_del_work wq */ 4400 if (sess->deleted) { 4401 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4402 "New command while old session %p is being deleted\n", 4403 sess); 4404 return -EFAULT; 4405 } 4406 4407 /* 4408 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4409 */ 4410 if (!kref_get_unless_zero(&sess->sess_kref)) { 4411 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4412 "%s: kref_get fail, %8phC oxid %x \n", 4413 __func__, sess->port_name, 4414 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4415 return -EFAULT; 4416 } 4417 4418 cmd = qlt_get_tag(vha, sess, atio); 4419 if (!cmd) { 4420 ql_dbg(ql_dbg_io, vha, 0x3062, 4421 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4422 ha->tgt.tgt_ops->put_sess(sess); 4423 return -EBUSY; 4424 } 4425 4426 cmd->cmd_in_wq = 1; 4427 cmd->trc_flags |= TRC_NEW_CMD; 4428 4429 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4430 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4431 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4432 4433 INIT_WORK(&cmd->work, qlt_do_work); 4434 if (vha->flags.qpairs_available) { 4435 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4436 } else if (ha->msix_count) { 4437 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4438 queue_work(qla_tgt_wq, &cmd->work); 4439 else 4440 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4441 &cmd->work); 4442 } else { 4443 queue_work(qla_tgt_wq, &cmd->work); 4444 } 4445 4446 return 0; 4447 } 4448 4449 /* ha->hardware_lock supposed to be held on entry */ 4450 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4451 int fn, void *iocb, int flags) 4452 { 4453 struct scsi_qla_host *vha = sess->vha; 4454 struct qla_hw_data *ha = vha->hw; 4455 struct qla_tgt_mgmt_cmd *mcmd; 4456 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4457 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4458 4459 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4460 if (!mcmd) { 4461 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4462 "qla_target(%d): Allocation of management " 4463 "command failed, some commands and their data could " 4464 "leak\n", vha->vp_idx); 4465 return -ENOMEM; 4466 } 4467 memset(mcmd, 0, sizeof(*mcmd)); 4468 mcmd->sess = sess; 4469 4470 if (iocb) { 4471 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4472 sizeof(mcmd->orig_iocb.imm_ntfy)); 4473 } 4474 mcmd->tmr_func = fn; 4475 mcmd->flags = flags; 4476 mcmd->reset_count = ha->base_qpair->chip_reset; 4477 mcmd->qpair = h->qpair; 4478 mcmd->vha = vha; 4479 mcmd->se_cmd.cpuid = h->cpuid; 4480 mcmd->unpacked_lun = lun; 4481 4482 switch (fn) { 4483 case QLA_TGT_LUN_RESET: 4484 case QLA_TGT_CLEAR_TS: 4485 case QLA_TGT_ABORT_TS: 4486 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4487 fallthrough; 4488 case QLA_TGT_CLEAR_ACA: 4489 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4490 mcmd->qpair = h->qpair; 4491 mcmd->se_cmd.cpuid = h->cpuid; 4492 break; 4493 4494 case QLA_TGT_TARGET_RESET: 4495 case QLA_TGT_NEXUS_LOSS_SESS: 4496 case QLA_TGT_NEXUS_LOSS: 4497 case QLA_TGT_ABORT_ALL: 4498 default: 4499 /* no-op */ 4500 break; 4501 } 4502 4503 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4504 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4505 &mcmd->work); 4506 4507 return 0; 4508 } 4509 4510 /* ha->hardware_lock supposed to be held on entry */ 4511 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4512 { 4513 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4514 struct qla_hw_data *ha = vha->hw; 4515 struct fc_port *sess; 4516 u64 unpacked_lun; 4517 int fn; 4518 unsigned long flags; 4519 4520 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4521 4522 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4523 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4524 a->u.isp24.fcp_hdr.s_id); 4525 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4526 4527 unpacked_lun = 4528 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4529 4530 if (sess == NULL || sess->deleted) 4531 return -EFAULT; 4532 4533 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4534 } 4535 4536 /* ha->hardware_lock supposed to be held on entry */ 4537 static int __qlt_abort_task(struct scsi_qla_host *vha, 4538 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4539 { 4540 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4541 struct qla_hw_data *ha = vha->hw; 4542 struct qla_tgt_mgmt_cmd *mcmd; 4543 u64 unpacked_lun; 4544 int rc; 4545 4546 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4547 if (mcmd == NULL) { 4548 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4549 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4550 vha->vp_idx, __func__); 4551 return -ENOMEM; 4552 } 4553 memset(mcmd, 0, sizeof(*mcmd)); 4554 4555 mcmd->sess = sess; 4556 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4557 sizeof(mcmd->orig_iocb.imm_ntfy)); 4558 4559 unpacked_lun = 4560 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4561 mcmd->reset_count = ha->base_qpair->chip_reset; 4562 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4563 mcmd->qpair = ha->base_qpair; 4564 4565 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4566 le16_to_cpu(iocb->u.isp2x.seq_id)); 4567 if (rc != 0) { 4568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4569 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4570 vha->vp_idx, rc); 4571 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4572 return -EFAULT; 4573 } 4574 4575 return 0; 4576 } 4577 4578 /* ha->hardware_lock supposed to be held on entry */ 4579 static int qlt_abort_task(struct scsi_qla_host *vha, 4580 struct imm_ntfy_from_isp *iocb) 4581 { 4582 struct qla_hw_data *ha = vha->hw; 4583 struct fc_port *sess; 4584 int loop_id; 4585 unsigned long flags; 4586 4587 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4588 4589 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4590 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4591 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4592 4593 if (sess == NULL) { 4594 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4595 "qla_target(%d): task abort for unexisting " 4596 "session\n", vha->vp_idx); 4597 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4598 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4599 } 4600 4601 return __qlt_abort_task(vha, iocb, sess); 4602 } 4603 4604 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4605 { 4606 if (rc != MBS_COMMAND_COMPLETE) { 4607 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4608 "%s: se_sess %p / sess %p from" 4609 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4610 " LOGO failed: %#x\n", 4611 __func__, 4612 fcport->se_sess, 4613 fcport, 4614 fcport->port_name, fcport->loop_id, 4615 fcport->d_id.b.domain, fcport->d_id.b.area, 4616 fcport->d_id.b.al_pa, rc); 4617 } 4618 4619 fcport->logout_completed = 1; 4620 } 4621 4622 /* 4623 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4624 * 4625 * Schedules sessions with matching port_id/loop_id but different wwn for 4626 * deletion. Returns existing session with matching wwn if present. 4627 * Null otherwise. 4628 */ 4629 struct fc_port * 4630 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4631 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4632 { 4633 struct fc_port *sess = NULL, *other_sess; 4634 uint64_t other_wwn; 4635 4636 *conflict_sess = NULL; 4637 4638 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4639 4640 other_wwn = wwn_to_u64(other_sess->port_name); 4641 4642 if (wwn == other_wwn) { 4643 WARN_ON(sess); 4644 sess = other_sess; 4645 continue; 4646 } 4647 4648 /* find other sess with nport_id collision */ 4649 if (port_id.b24 == other_sess->d_id.b24) { 4650 if (loop_id != other_sess->loop_id) { 4651 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4652 "Invalidating sess %p loop_id %d wwn %llx.\n", 4653 other_sess, other_sess->loop_id, other_wwn); 4654 4655 /* 4656 * logout_on_delete is set by default, but another 4657 * session that has the same s_id/loop_id combo 4658 * might have cleared it when requested this session 4659 * deletion, so don't touch it 4660 */ 4661 qlt_schedule_sess_for_deletion(other_sess); 4662 } else { 4663 /* 4664 * Another wwn used to have our s_id/loop_id 4665 * kill the session, but don't free the loop_id 4666 */ 4667 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4668 "Invalidating sess %p loop_id %d wwn %llx.\n", 4669 other_sess, other_sess->loop_id, other_wwn); 4670 4671 other_sess->keep_nport_handle = 1; 4672 if (other_sess->disc_state != DSC_DELETED) 4673 *conflict_sess = other_sess; 4674 qlt_schedule_sess_for_deletion(other_sess); 4675 } 4676 continue; 4677 } 4678 4679 /* find other sess with nport handle collision */ 4680 if ((loop_id == other_sess->loop_id) && 4681 (loop_id != FC_NO_LOOP_ID)) { 4682 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4683 "Invalidating sess %p loop_id %d wwn %llx.\n", 4684 other_sess, other_sess->loop_id, other_wwn); 4685 4686 /* Same loop_id but different s_id 4687 * Ok to kill and logout */ 4688 qlt_schedule_sess_for_deletion(other_sess); 4689 } 4690 } 4691 4692 return sess; 4693 } 4694 4695 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4696 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4697 { 4698 struct qla_tgt_sess_op *op; 4699 struct qla_tgt_cmd *cmd; 4700 uint32_t key; 4701 int count = 0; 4702 unsigned long flags; 4703 4704 key = (((u32)s_id->b.domain << 16) | 4705 ((u32)s_id->b.area << 8) | 4706 ((u32)s_id->b.al_pa)); 4707 4708 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4709 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4710 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4711 4712 if (op_key == key) { 4713 op->aborted = true; 4714 count++; 4715 } 4716 } 4717 4718 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4719 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4720 4721 if (cmd_key == key) { 4722 cmd->aborted = 1; 4723 count++; 4724 } 4725 } 4726 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4727 4728 return count; 4729 } 4730 4731 static int qlt_handle_login(struct scsi_qla_host *vha, 4732 struct imm_ntfy_from_isp *iocb) 4733 { 4734 struct fc_port *sess = NULL, *conflict_sess = NULL; 4735 uint64_t wwn; 4736 port_id_t port_id; 4737 uint16_t loop_id, wd3_lo; 4738 int res = 0; 4739 struct qlt_plogi_ack_t *pla; 4740 unsigned long flags; 4741 4742 lockdep_assert_held(&vha->hw->hardware_lock); 4743 4744 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4745 4746 port_id.b.domain = iocb->u.isp24.port_id[2]; 4747 port_id.b.area = iocb->u.isp24.port_id[1]; 4748 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4749 port_id.b.rsvd_1 = 0; 4750 4751 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4752 4753 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4754 abort_cmds_for_s_id(vha, &port_id); 4755 4756 if (wwn) { 4757 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4758 sess = qlt_find_sess_invalidate_other(vha, wwn, 4759 port_id, loop_id, &conflict_sess); 4760 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4761 } else { 4762 ql_dbg(ql_dbg_disc, vha, 0xffff, 4763 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4764 __func__, __LINE__, loop_id, port_id.b24); 4765 qlt_send_term_imm_notif(vha, iocb, 1); 4766 goto out; 4767 } 4768 4769 if (IS_SW_RESV_ADDR(port_id)) { 4770 res = 1; 4771 goto out; 4772 } 4773 4774 if (vha->hw->flags.edif_enabled && 4775 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4776 iocb->u.isp24.status_subcode == ELS_PLOGI && 4777 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4778 ql_dbg(ql_dbg_disc, vha, 0xffff, 4779 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4780 __func__, __LINE__, loop_id, port_id.b24); 4781 qlt_send_term_imm_notif(vha, iocb, 1); 4782 goto out; 4783 } 4784 4785 if (vha->hw->flags.edif_enabled) { 4786 if (DBELL_INACTIVE(vha)) { 4787 ql_dbg(ql_dbg_disc, vha, 0xffff, 4788 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4789 __func__, __LINE__, loop_id, port_id.b24); 4790 qlt_send_term_imm_notif(vha, iocb, 1); 4791 goto out; 4792 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4793 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4794 ql_dbg(ql_dbg_disc, vha, 0xffff, 4795 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4796 __func__, __LINE__, loop_id, port_id.b24); 4797 qlt_send_term_imm_notif(vha, iocb, 1); 4798 goto out; 4799 } 4800 } 4801 4802 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4803 if (!pla) { 4804 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4805 "%s %d %8phC Term INOT due to mem alloc fail", 4806 __func__, __LINE__, 4807 iocb->u.isp24.port_name); 4808 qlt_send_term_imm_notif(vha, iocb, 1); 4809 goto out; 4810 } 4811 4812 if (conflict_sess) { 4813 conflict_sess->login_gen++; 4814 qlt_plogi_ack_link(vha, pla, conflict_sess, 4815 QLT_PLOGI_LINK_CONFLICT); 4816 } 4817 4818 if (!sess) { 4819 pla->ref_count++; 4820 ql_dbg(ql_dbg_disc, vha, 0xffff, 4821 "%s %d %8phC post new sess\n", 4822 __func__, __LINE__, iocb->u.isp24.port_name); 4823 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4824 qla24xx_post_newsess_work(vha, &port_id, 4825 iocb->u.isp24.port_name, 4826 iocb->u.isp24.u.plogi.node_name, 4827 pla, 0); 4828 else 4829 qla24xx_post_newsess_work(vha, &port_id, 4830 iocb->u.isp24.port_name, NULL, 4831 pla, 0); 4832 4833 goto out; 4834 } 4835 4836 if (sess->disc_state == DSC_UPD_FCPORT) { 4837 u16 sec; 4838 4839 /* 4840 * Remote port registration is still going on from 4841 * previous login. Allow it to finish before we 4842 * accept the new login. 4843 */ 4844 sess->next_disc_state = DSC_DELETE_PEND; 4845 sec = jiffies_to_msecs(jiffies - 4846 sess->jiffies_at_registration) / 1000; 4847 if (sess->sec_since_registration < sec && sec && 4848 !(sec % 5)) { 4849 sess->sec_since_registration = sec; 4850 ql_dbg(ql_dbg_disc, vha, 0xffff, 4851 "%s %8phC - Slow Rport registration (%d Sec)\n", 4852 __func__, sess->port_name, sec); 4853 } 4854 4855 if (!conflict_sess) { 4856 list_del(&pla->list); 4857 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4858 } 4859 4860 qlt_send_term_imm_notif(vha, iocb, 1); 4861 goto out; 4862 } 4863 4864 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4865 sess->d_id = port_id; 4866 sess->login_gen++; 4867 sess->loop_id = loop_id; 4868 4869 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4870 /* remote port has assigned Port ID */ 4871 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4872 vha->d_id = sess->d_id; 4873 4874 ql_dbg(ql_dbg_disc, vha, 0xffff, 4875 "%s %8phC - send port online\n", 4876 __func__, sess->port_name); 4877 4878 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4879 sess->d_id.b24); 4880 } 4881 4882 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4883 sess->fw_login_state = DSC_LS_PRLI_PEND; 4884 sess->local = 0; 4885 sess->loop_id = loop_id; 4886 sess->d_id = port_id; 4887 sess->fw_login_state = DSC_LS_PRLI_PEND; 4888 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4889 4890 if (wd3_lo & BIT_7) 4891 sess->conf_compl_supported = 1; 4892 4893 if ((wd3_lo & BIT_4) == 0) 4894 sess->port_type = FCT_INITIATOR; 4895 else 4896 sess->port_type = FCT_TARGET; 4897 4898 } else 4899 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4900 4901 4902 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4903 "%s %d %8phC DS %d\n", 4904 __func__, __LINE__, sess->port_name, sess->disc_state); 4905 4906 switch (sess->disc_state) { 4907 case DSC_DELETED: 4908 case DSC_LOGIN_PEND: 4909 qlt_plogi_ack_unref(vha, pla); 4910 break; 4911 4912 default: 4913 /* 4914 * Under normal circumstances we want to release nport handle 4915 * during LOGO process to avoid nport handle leaks inside FW. 4916 * The exception is when LOGO is done while another PLOGI with 4917 * the same nport handle is waiting as might be the case here. 4918 * Note: there is always a possibily of a race where session 4919 * deletion has already started for other reasons (e.g. ACL 4920 * removal) and now PLOGI arrives: 4921 * 1. if PLOGI arrived in FW after nport handle has been freed, 4922 * FW must have assigned this PLOGI a new/same handle and we 4923 * can proceed ACK'ing it as usual when session deletion 4924 * completes. 4925 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4926 * bit reached it, the handle has now been released. We'll 4927 * get an error when we ACK this PLOGI. Nothing will be sent 4928 * back to initiator. Initiator should eventually retry 4929 * PLOGI and situation will correct itself. 4930 */ 4931 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4932 (sess->d_id.b24 == port_id.b24)); 4933 4934 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4935 "%s %d %8phC post del sess\n", 4936 __func__, __LINE__, sess->port_name); 4937 4938 4939 qlt_schedule_sess_for_deletion(sess); 4940 break; 4941 } 4942 out: 4943 return res; 4944 } 4945 4946 /* 4947 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4948 */ 4949 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4950 struct imm_ntfy_from_isp *iocb) 4951 { 4952 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4953 struct qla_hw_data *ha = vha->hw; 4954 struct fc_port *sess = NULL, *conflict_sess = NULL; 4955 uint64_t wwn; 4956 port_id_t port_id; 4957 uint16_t loop_id; 4958 uint16_t wd3_lo; 4959 int res = 0; 4960 unsigned long flags; 4961 4962 lockdep_assert_held(&ha->hardware_lock); 4963 4964 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4965 4966 port_id.b.domain = iocb->u.isp24.port_id[2]; 4967 port_id.b.area = iocb->u.isp24.port_id[1]; 4968 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4969 port_id.b.rsvd_1 = 0; 4970 4971 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4972 4973 ql_dbg(ql_dbg_disc, vha, 0xf026, 4974 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4975 vha->vp_idx, iocb->u.isp24.port_id[2], 4976 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4977 iocb->u.isp24.status_subcode, loop_id, 4978 iocb->u.isp24.port_name); 4979 4980 /* res = 1 means ack at the end of thread 4981 * res = 0 means ack async/later. 4982 */ 4983 switch (iocb->u.isp24.status_subcode) { 4984 case ELS_PLOGI: 4985 res = qlt_handle_login(vha, iocb); 4986 break; 4987 4988 case ELS_PRLI: 4989 if (N2N_TOPO(ha)) { 4990 sess = qla2x00_find_fcport_by_wwpn(vha, 4991 iocb->u.isp24.port_name, 1); 4992 4993 if (vha->hw->flags.edif_enabled && sess && 4994 (!(sess->flags & FCF_FCSP_DEVICE) || 4995 !sess->edif.authok)) { 4996 ql_dbg(ql_dbg_disc, vha, 0xffff, 4997 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 4998 __func__, __LINE__, iocb->u.isp24.port_name); 4999 qlt_send_term_imm_notif(vha, iocb, 1); 5000 break; 5001 } 5002 5003 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5004 ql_dbg(ql_dbg_disc, vha, 0xffff, 5005 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5006 __func__, __LINE__, 5007 iocb->u.isp24.port_name); 5008 qlt_send_term_imm_notif(vha, iocb, 1); 5009 break; 5010 } 5011 5012 res = qlt_handle_login(vha, iocb); 5013 break; 5014 } 5015 5016 if (IS_SW_RESV_ADDR(port_id)) { 5017 res = 1; 5018 break; 5019 } 5020 5021 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5022 5023 if (wwn) { 5024 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5025 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5026 loop_id, &conflict_sess); 5027 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5028 } 5029 5030 if (conflict_sess) { 5031 switch (conflict_sess->disc_state) { 5032 case DSC_DELETED: 5033 case DSC_DELETE_PEND: 5034 break; 5035 default: 5036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5037 "PRLI with conflicting sess %p port %8phC\n", 5038 conflict_sess, conflict_sess->port_name); 5039 conflict_sess->fw_login_state = 5040 DSC_LS_PORT_UNAVAIL; 5041 qlt_send_term_imm_notif(vha, iocb, 1); 5042 res = 0; 5043 break; 5044 } 5045 } 5046 5047 if (sess != NULL) { 5048 bool delete = false; 5049 int sec; 5050 5051 if (vha->hw->flags.edif_enabled && sess && 5052 (!(sess->flags & FCF_FCSP_DEVICE) || 5053 !sess->edif.authok)) { 5054 ql_dbg(ql_dbg_disc, vha, 0xffff, 5055 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5056 __func__, __LINE__, iocb->u.isp24.port_name); 5057 qlt_send_term_imm_notif(vha, iocb, 1); 5058 break; 5059 } 5060 5061 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5062 switch (sess->fw_login_state) { 5063 case DSC_LS_PLOGI_PEND: 5064 case DSC_LS_PLOGI_COMP: 5065 case DSC_LS_PRLI_COMP: 5066 break; 5067 default: 5068 delete = true; 5069 break; 5070 } 5071 5072 switch (sess->disc_state) { 5073 case DSC_UPD_FCPORT: 5074 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5075 flags); 5076 5077 sec = jiffies_to_msecs(jiffies - 5078 sess->jiffies_at_registration)/1000; 5079 if (sess->sec_since_registration < sec && sec && 5080 !(sec % 5)) { 5081 sess->sec_since_registration = sec; 5082 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5083 "%s %8phC : Slow Rport registration(%d Sec)\n", 5084 __func__, sess->port_name, sec); 5085 } 5086 qlt_send_term_imm_notif(vha, iocb, 1); 5087 return 0; 5088 5089 case DSC_LOGIN_PEND: 5090 case DSC_GPDB: 5091 case DSC_LOGIN_COMPLETE: 5092 case DSC_ADISC: 5093 delete = false; 5094 break; 5095 default: 5096 break; 5097 } 5098 5099 if (delete) { 5100 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5101 flags); 5102 /* 5103 * Impatient initiator sent PRLI before last 5104 * PLOGI could finish. Will force him to re-try, 5105 * while last one finishes. 5106 */ 5107 ql_log(ql_log_warn, sess->vha, 0xf095, 5108 "sess %p PRLI received, before plogi ack.\n", 5109 sess); 5110 qlt_send_term_imm_notif(vha, iocb, 1); 5111 res = 0; 5112 break; 5113 } 5114 5115 /* 5116 * This shouldn't happen under normal circumstances, 5117 * since we have deleted the old session during PLOGI 5118 */ 5119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5120 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5121 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5122 5123 sess->local = 0; 5124 sess->loop_id = loop_id; 5125 sess->d_id = port_id; 5126 sess->fw_login_state = DSC_LS_PRLI_PEND; 5127 5128 if (wd3_lo & BIT_7) 5129 sess->conf_compl_supported = 1; 5130 5131 if ((wd3_lo & BIT_4) == 0) 5132 sess->port_type = FCT_INITIATOR; 5133 else 5134 sess->port_type = FCT_TARGET; 5135 5136 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5137 } 5138 res = 1; /* send notify ack */ 5139 5140 /* Make session global (not used in fabric mode) */ 5141 if (ha->current_topology != ISP_CFG_F) { 5142 if (sess) { 5143 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5144 "%s %d %8phC post nack\n", 5145 __func__, __LINE__, sess->port_name); 5146 qla24xx_post_nack_work(vha, sess, iocb, 5147 SRB_NACK_PRLI); 5148 res = 0; 5149 } else { 5150 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5151 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5152 qla2xxx_wake_dpc(vha); 5153 } 5154 } else { 5155 if (sess) { 5156 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5157 "%s %d %8phC post nack\n", 5158 __func__, __LINE__, sess->port_name); 5159 qla24xx_post_nack_work(vha, sess, iocb, 5160 SRB_NACK_PRLI); 5161 res = 0; 5162 } 5163 } 5164 break; 5165 5166 case ELS_TPRLO: 5167 if (le16_to_cpu(iocb->u.isp24.flags) & 5168 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5169 loop_id = 0xFFFF; 5170 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5171 res = 1; 5172 break; 5173 } 5174 fallthrough; 5175 case ELS_LOGO: 5176 case ELS_PRLO: 5177 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5178 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5179 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5180 5181 if (sess) { 5182 sess->login_gen++; 5183 sess->fw_login_state = DSC_LS_LOGO_PEND; 5184 sess->logo_ack_needed = 1; 5185 memcpy(sess->iocb, iocb, IOCB_SIZE); 5186 } 5187 5188 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5189 5190 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5191 "%s: logo %llx res %d sess %p ", 5192 __func__, wwn, res, sess); 5193 if (res == 0) { 5194 /* 5195 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5196 * for LOGO_ACK & sess delete 5197 */ 5198 BUG_ON(!sess); 5199 res = 0; 5200 } else { 5201 /* cmd did not go to upper layer. */ 5202 if (sess) { 5203 qlt_schedule_sess_for_deletion(sess); 5204 res = 0; 5205 } 5206 /* else logo will be ack */ 5207 } 5208 break; 5209 case ELS_PDISC: 5210 case ELS_ADISC: 5211 { 5212 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5213 5214 if (tgt->link_reinit_iocb_pending) { 5215 qlt_send_notify_ack(ha->base_qpair, 5216 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5217 tgt->link_reinit_iocb_pending = 0; 5218 } 5219 5220 sess = qla2x00_find_fcport_by_wwpn(vha, 5221 iocb->u.isp24.port_name, 1); 5222 if (sess) { 5223 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5224 "sess %p lid %d|%d DS %d LS %d\n", 5225 sess, sess->loop_id, loop_id, 5226 sess->disc_state, sess->fw_login_state); 5227 } 5228 5229 res = 1; /* send notify ack */ 5230 break; 5231 } 5232 5233 case ELS_FLOGI: /* should never happen */ 5234 default: 5235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5236 "qla_target(%d): Unsupported ELS command %x " 5237 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5238 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5239 break; 5240 } 5241 5242 ql_dbg(ql_dbg_disc, vha, 0xf026, 5243 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5244 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5245 5246 return res; 5247 } 5248 5249 /* 5250 * ha->hardware_lock supposed to be held on entry. 5251 * Might drop it, then reacquire. 5252 */ 5253 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5254 struct imm_ntfy_from_isp *iocb) 5255 { 5256 struct qla_hw_data *ha = vha->hw; 5257 uint32_t add_flags = 0; 5258 int send_notify_ack = 1; 5259 uint16_t status; 5260 5261 lockdep_assert_held(&ha->hardware_lock); 5262 5263 status = le16_to_cpu(iocb->u.isp2x.status); 5264 switch (status) { 5265 case IMM_NTFY_LIP_RESET: 5266 { 5267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5268 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5269 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5270 iocb->u.isp24.status_subcode); 5271 5272 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5273 send_notify_ack = 0; 5274 break; 5275 } 5276 5277 case IMM_NTFY_LIP_LINK_REINIT: 5278 { 5279 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5280 5281 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5282 "qla_target(%d): LINK REINIT (loop %#x, " 5283 "subcode %x)\n", vha->vp_idx, 5284 le16_to_cpu(iocb->u.isp24.nport_handle), 5285 iocb->u.isp24.status_subcode); 5286 if (tgt->link_reinit_iocb_pending) { 5287 qlt_send_notify_ack(ha->base_qpair, 5288 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5289 } 5290 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5291 tgt->link_reinit_iocb_pending = 1; 5292 /* 5293 * QLogic requires to wait after LINK REINIT for possible 5294 * PDISC or ADISC ELS commands 5295 */ 5296 send_notify_ack = 0; 5297 break; 5298 } 5299 5300 case IMM_NTFY_PORT_LOGOUT: 5301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5302 "qla_target(%d): Port logout (loop " 5303 "%#x, subcode %x)\n", vha->vp_idx, 5304 le16_to_cpu(iocb->u.isp24.nport_handle), 5305 iocb->u.isp24.status_subcode); 5306 5307 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5308 send_notify_ack = 0; 5309 /* The sessions will be cleared in the callback, if needed */ 5310 break; 5311 5312 case IMM_NTFY_GLBL_TPRLO: 5313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5314 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5315 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5316 send_notify_ack = 0; 5317 /* The sessions will be cleared in the callback, if needed */ 5318 break; 5319 5320 case IMM_NTFY_PORT_CONFIG: 5321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5322 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5323 status); 5324 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5325 send_notify_ack = 0; 5326 /* The sessions will be cleared in the callback, if needed */ 5327 break; 5328 5329 case IMM_NTFY_GLBL_LOGO: 5330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5331 "qla_target(%d): Link failure detected\n", 5332 vha->vp_idx); 5333 /* I_T nexus loss */ 5334 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5335 send_notify_ack = 0; 5336 break; 5337 5338 case IMM_NTFY_IOCB_OVERFLOW: 5339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5340 "qla_target(%d): Cannot provide requested " 5341 "capability (IOCB overflowed the immediate notify " 5342 "resource count)\n", vha->vp_idx); 5343 break; 5344 5345 case IMM_NTFY_ABORT_TASK: 5346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5347 "qla_target(%d): Abort Task (S %08x I %#x -> " 5348 "L %#x)\n", vha->vp_idx, 5349 le16_to_cpu(iocb->u.isp2x.seq_id), 5350 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5351 le16_to_cpu(iocb->u.isp2x.lun)); 5352 if (qlt_abort_task(vha, iocb) == 0) 5353 send_notify_ack = 0; 5354 break; 5355 5356 case IMM_NTFY_RESOURCE: 5357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5358 "qla_target(%d): Out of resources, host %ld\n", 5359 vha->vp_idx, vha->host_no); 5360 break; 5361 5362 case IMM_NTFY_MSG_RX: 5363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5364 "qla_target(%d): Immediate notify task %x\n", 5365 vha->vp_idx, iocb->u.isp2x.task_flags); 5366 break; 5367 5368 case IMM_NTFY_ELS: 5369 if (qlt_24xx_handle_els(vha, iocb) == 0) 5370 send_notify_ack = 0; 5371 break; 5372 default: 5373 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5374 "qla_target(%d): Received unknown immediate " 5375 "notify status %x\n", vha->vp_idx, status); 5376 break; 5377 } 5378 5379 if (send_notify_ack) 5380 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5381 0, 0); 5382 } 5383 5384 /* 5385 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5386 * This function sends busy to ISP 2xxx or 24xx. 5387 */ 5388 static int __qlt_send_busy(struct qla_qpair *qpair, 5389 struct atio_from_isp *atio, uint16_t status) 5390 { 5391 struct scsi_qla_host *vha = qpair->vha; 5392 struct ctio7_to_24xx *ctio24; 5393 struct qla_hw_data *ha = vha->hw; 5394 request_t *pkt; 5395 struct fc_port *sess = NULL; 5396 unsigned long flags; 5397 u16 temp; 5398 port_id_t id; 5399 5400 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5401 5402 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5403 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5405 if (!sess) { 5406 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5407 return 0; 5408 } 5409 /* Sending marker isn't necessary, since we called from ISR */ 5410 5411 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5412 if (!pkt) { 5413 ql_dbg(ql_dbg_io, vha, 0x3063, 5414 "qla_target(%d): %s failed: unable to allocate " 5415 "request packet", vha->vp_idx, __func__); 5416 return -ENOMEM; 5417 } 5418 5419 qpair->tgt_counters.num_q_full_sent++; 5420 pkt->entry_count = 1; 5421 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5422 5423 ctio24 = (struct ctio7_to_24xx *)pkt; 5424 ctio24->entry_type = CTIO_TYPE7; 5425 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5426 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5427 ctio24->vp_index = vha->vp_idx; 5428 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5429 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5430 temp = (atio->u.isp24.attr << 9) | 5431 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5432 CTIO7_FLAGS_DONT_RET_CTIO; 5433 ctio24->u.status1.flags = cpu_to_le16(temp); 5434 /* 5435 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5436 * if the explicit conformation is used. 5437 */ 5438 ctio24->u.status1.ox_id = 5439 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5440 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5441 5442 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5443 5444 if (ctio24->u.status1.residual != 0) 5445 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5446 5447 /* Memory Barrier */ 5448 wmb(); 5449 if (qpair->reqq_start_iocbs) 5450 qpair->reqq_start_iocbs(qpair); 5451 else 5452 qla2x00_start_iocbs(vha, qpair->req); 5453 return 0; 5454 } 5455 5456 /* 5457 * This routine is used to allocate a command for either a QFull condition 5458 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5459 * out previously. 5460 */ 5461 static void 5462 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5463 struct atio_from_isp *atio, uint16_t status, int qfull) 5464 { 5465 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5466 struct qla_hw_data *ha = vha->hw; 5467 struct fc_port *sess; 5468 struct qla_tgt_cmd *cmd; 5469 unsigned long flags; 5470 5471 if (unlikely(tgt->tgt_stop)) { 5472 ql_dbg(ql_dbg_io, vha, 0x300a, 5473 "New command while device %p is shutting down\n", tgt); 5474 return; 5475 } 5476 5477 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5478 vha->hw->tgt.num_qfull_cmds_dropped++; 5479 if (vha->hw->tgt.num_qfull_cmds_dropped > 5480 vha->qla_stats.stat_max_qfull_cmds_dropped) 5481 vha->qla_stats.stat_max_qfull_cmds_dropped = 5482 vha->hw->tgt.num_qfull_cmds_dropped; 5483 5484 ql_dbg(ql_dbg_io, vha, 0x3068, 5485 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5486 vha->vp_idx, __func__, 5487 vha->hw->tgt.num_qfull_cmds_dropped); 5488 5489 qlt_chk_exch_leak_thresh_hold(vha); 5490 return; 5491 } 5492 5493 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5494 (vha, atio->u.isp24.fcp_hdr.s_id); 5495 if (!sess) 5496 return; 5497 5498 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5499 if (!cmd) { 5500 ql_dbg(ql_dbg_io, vha, 0x3009, 5501 "qla_target(%d): %s: Allocation of cmd failed\n", 5502 vha->vp_idx, __func__); 5503 5504 vha->hw->tgt.num_qfull_cmds_dropped++; 5505 if (vha->hw->tgt.num_qfull_cmds_dropped > 5506 vha->qla_stats.stat_max_qfull_cmds_dropped) 5507 vha->qla_stats.stat_max_qfull_cmds_dropped = 5508 vha->hw->tgt.num_qfull_cmds_dropped; 5509 5510 qlt_chk_exch_leak_thresh_hold(vha); 5511 return; 5512 } 5513 5514 qlt_incr_num_pend_cmds(vha); 5515 INIT_LIST_HEAD(&cmd->cmd_list); 5516 memcpy(&cmd->atio, atio, sizeof(*atio)); 5517 5518 cmd->tgt = vha->vha_tgt.qla_tgt; 5519 cmd->vha = vha; 5520 cmd->reset_count = ha->base_qpair->chip_reset; 5521 cmd->q_full = 1; 5522 cmd->qpair = ha->base_qpair; 5523 5524 if (qfull) { 5525 cmd->q_full = 1; 5526 /* NOTE: borrowing the state field to carry the status */ 5527 cmd->state = status; 5528 } else 5529 cmd->term_exchg = 1; 5530 5531 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5532 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5533 5534 vha->hw->tgt.num_qfull_cmds_alloc++; 5535 if (vha->hw->tgt.num_qfull_cmds_alloc > 5536 vha->qla_stats.stat_max_qfull_cmds_alloc) 5537 vha->qla_stats.stat_max_qfull_cmds_alloc = 5538 vha->hw->tgt.num_qfull_cmds_alloc; 5539 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5540 } 5541 5542 int 5543 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5544 { 5545 struct scsi_qla_host *vha = qpair->vha; 5546 struct qla_hw_data *ha = vha->hw; 5547 unsigned long flags; 5548 struct qla_tgt_cmd *cmd, *tcmd; 5549 struct list_head free_list, q_full_list; 5550 int rc = 0; 5551 5552 if (list_empty(&ha->tgt.q_full_list)) 5553 return 0; 5554 5555 INIT_LIST_HEAD(&free_list); 5556 INIT_LIST_HEAD(&q_full_list); 5557 5558 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5559 if (list_empty(&ha->tgt.q_full_list)) { 5560 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5561 return 0; 5562 } 5563 5564 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5565 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5566 5567 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5568 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5569 if (cmd->q_full) 5570 /* cmd->state is a borrowed field to hold status */ 5571 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5572 else if (cmd->term_exchg) 5573 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5574 5575 if (rc == -ENOMEM) 5576 break; 5577 5578 if (cmd->q_full) 5579 ql_dbg(ql_dbg_io, vha, 0x3006, 5580 "%s: busy sent for ox_id[%04x]\n", __func__, 5581 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5582 else if (cmd->term_exchg) 5583 ql_dbg(ql_dbg_io, vha, 0x3007, 5584 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5585 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5586 else 5587 ql_dbg(ql_dbg_io, vha, 0x3008, 5588 "%s: Unexpected cmd in QFull list %p\n", __func__, 5589 cmd); 5590 5591 list_move_tail(&cmd->cmd_list, &free_list); 5592 5593 /* piggy back on hardware_lock for protection */ 5594 vha->hw->tgt.num_qfull_cmds_alloc--; 5595 } 5596 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5597 5598 cmd = NULL; 5599 5600 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5601 list_del(&cmd->cmd_list); 5602 /* This cmd was never sent to TCM. There is no need 5603 * to schedule free or call free_cmd 5604 */ 5605 qlt_free_cmd(cmd); 5606 } 5607 5608 if (!list_empty(&q_full_list)) { 5609 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5610 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5611 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5612 } 5613 5614 return rc; 5615 } 5616 5617 static void 5618 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5619 uint16_t status) 5620 { 5621 int rc = 0; 5622 struct scsi_qla_host *vha = qpair->vha; 5623 5624 rc = __qlt_send_busy(qpair, atio, status); 5625 if (rc == -ENOMEM) 5626 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5627 } 5628 5629 static int 5630 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5631 struct atio_from_isp *atio, uint8_t ha_locked) 5632 { 5633 struct qla_hw_data *ha = vha->hw; 5634 unsigned long flags; 5635 5636 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5637 return 0; 5638 5639 if (!ha_locked) 5640 spin_lock_irqsave(&ha->hardware_lock, flags); 5641 qlt_send_busy(qpair, atio, qla_sam_status); 5642 if (!ha_locked) 5643 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5644 5645 return 1; 5646 } 5647 5648 /* ha->hardware_lock supposed to be held on entry */ 5649 /* called via callback from qla2xxx */ 5650 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5651 struct atio_from_isp *atio, uint8_t ha_locked) 5652 { 5653 struct qla_hw_data *ha = vha->hw; 5654 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5655 int rc; 5656 unsigned long flags = 0; 5657 5658 if (unlikely(tgt == NULL)) { 5659 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5660 "ATIO pkt, but no tgt (ha %p)", ha); 5661 return; 5662 } 5663 /* 5664 * In tgt_stop mode we also should allow all requests to pass. 5665 * Otherwise, some commands can stuck. 5666 */ 5667 5668 tgt->atio_irq_cmd_count++; 5669 5670 switch (atio->u.raw.entry_type) { 5671 case ATIO_TYPE7: 5672 if (unlikely(atio->u.isp24.exchange_addr == 5673 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5674 ql_dbg(ql_dbg_io, vha, 0x3065, 5675 "qla_target(%d): ATIO_TYPE7 " 5676 "received with UNKNOWN exchange address, " 5677 "sending QUEUE_FULL\n", vha->vp_idx); 5678 if (!ha_locked) 5679 spin_lock_irqsave(&ha->hardware_lock, flags); 5680 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5681 if (!ha_locked) 5682 spin_unlock_irqrestore(&ha->hardware_lock, 5683 flags); 5684 break; 5685 } 5686 5687 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5688 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5689 atio, ha_locked); 5690 if (rc != 0) { 5691 tgt->atio_irq_cmd_count--; 5692 return; 5693 } 5694 rc = qlt_handle_cmd_for_atio(vha, atio); 5695 } else { 5696 rc = qlt_handle_task_mgmt(vha, atio); 5697 } 5698 if (unlikely(rc != 0)) { 5699 if (!ha_locked) 5700 spin_lock_irqsave(&ha->hardware_lock, flags); 5701 switch (rc) { 5702 case -ENODEV: 5703 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5704 "qla_target: Unable to send command to target\n"); 5705 break; 5706 case -EBADF: 5707 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5708 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5709 qlt_send_term_exchange(ha->base_qpair, NULL, 5710 atio, 1, 0); 5711 break; 5712 case -EBUSY: 5713 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5714 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5715 vha->vp_idx); 5716 qlt_send_busy(ha->base_qpair, atio, 5717 tc_sam_status); 5718 break; 5719 default: 5720 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5721 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5722 vha->vp_idx); 5723 qlt_send_busy(ha->base_qpair, atio, 5724 qla_sam_status); 5725 break; 5726 } 5727 if (!ha_locked) 5728 spin_unlock_irqrestore(&ha->hardware_lock, 5729 flags); 5730 } 5731 break; 5732 5733 case IMMED_NOTIFY_TYPE: 5734 { 5735 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5736 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5737 "qla_target(%d): Received ATIO packet %x " 5738 "with error status %x\n", vha->vp_idx, 5739 atio->u.raw.entry_type, 5740 atio->u.isp2x.entry_status); 5741 break; 5742 } 5743 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5744 5745 if (!ha_locked) 5746 spin_lock_irqsave(&ha->hardware_lock, flags); 5747 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5748 if (!ha_locked) 5749 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5750 break; 5751 } 5752 5753 default: 5754 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5755 "qla_target(%d): Received unknown ATIO atio " 5756 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5757 break; 5758 } 5759 5760 tgt->atio_irq_cmd_count--; 5761 } 5762 5763 /* 5764 * qpair lock is assume to be held 5765 * rc = 0 : send terminate & abts respond 5766 * rc != 0: do not send term & abts respond 5767 */ 5768 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5769 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5770 { 5771 struct qla_hw_data *ha = vha->hw; 5772 int rc = 0; 5773 5774 /* 5775 * Detect unresolved exchange. If the same ABTS is unable 5776 * to terminate an existing command and the same ABTS loops 5777 * between FW & Driver, then force FW dump. Under 1 jiff, 5778 * we should see multiple loops. 5779 */ 5780 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5781 qpair->retry_term_jiff == jiffies) { 5782 /* found existing exchange */ 5783 qpair->retry_term_cnt++; 5784 if (qpair->retry_term_cnt >= 5) { 5785 rc = -EIO; 5786 qpair->retry_term_cnt = 0; 5787 ql_log(ql_log_warn, vha, 0xffff, 5788 "Unable to send ABTS Respond. Dumping firmware.\n"); 5789 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5790 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5791 5792 if (qpair == ha->base_qpair) 5793 ha->isp_ops->fw_dump(vha); 5794 else 5795 qla2xxx_dump_fw(vha); 5796 5797 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5798 qla2xxx_wake_dpc(vha); 5799 } 5800 } else if (qpair->retry_term_jiff != jiffies) { 5801 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5802 qpair->retry_term_cnt = 0; 5803 qpair->retry_term_jiff = jiffies; 5804 } 5805 5806 return rc; 5807 } 5808 5809 5810 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5811 struct rsp_que *rsp, response_t *pkt) 5812 { 5813 struct abts_resp_from_24xx_fw *entry = 5814 (struct abts_resp_from_24xx_fw *)pkt; 5815 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5816 struct qla_tgt_mgmt_cmd *mcmd; 5817 struct qla_hw_data *ha = vha->hw; 5818 5819 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5820 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5821 ql_dbg(ql_dbg_async, vha, 0xe064, 5822 "qla_target(%d): ABTS Comp without mcmd\n", 5823 vha->vp_idx); 5824 return; 5825 } 5826 5827 if (mcmd) 5828 vha = mcmd->vha; 5829 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5830 5831 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5832 "ABTS_RESP_24XX: compl_status %x\n", 5833 entry->compl_status); 5834 5835 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5836 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5837 le32_to_cpu(entry->error_subcode2) == 0) { 5838 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5839 ha->tgt.tgt_ops->free_mcmd(mcmd); 5840 return; 5841 } 5842 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5843 pkt, mcmd); 5844 } else { 5845 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5846 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5847 vha->vp_idx, entry->compl_status, 5848 entry->error_subcode1, 5849 entry->error_subcode2); 5850 ha->tgt.tgt_ops->free_mcmd(mcmd); 5851 } 5852 } else if (mcmd) { 5853 ha->tgt.tgt_ops->free_mcmd(mcmd); 5854 } 5855 } 5856 5857 /* ha->hardware_lock supposed to be held on entry */ 5858 /* called via callback from qla2xxx */ 5859 static void qlt_response_pkt(struct scsi_qla_host *vha, 5860 struct rsp_que *rsp, response_t *pkt) 5861 { 5862 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5863 5864 if (unlikely(tgt == NULL)) { 5865 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5866 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5867 vha->vp_idx, pkt->entry_type, vha->hw); 5868 return; 5869 } 5870 5871 /* 5872 * In tgt_stop mode we also should allow all requests to pass. 5873 * Otherwise, some commands can stuck. 5874 */ 5875 5876 switch (pkt->entry_type) { 5877 case CTIO_CRC2: 5878 case CTIO_TYPE7: 5879 { 5880 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5881 5882 qlt_do_ctio_completion(vha, rsp, entry->handle, 5883 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5884 entry); 5885 break; 5886 } 5887 5888 case ACCEPT_TGT_IO_TYPE: 5889 { 5890 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5891 int rc; 5892 5893 if (atio->u.isp2x.status != 5894 cpu_to_le16(ATIO_CDB_VALID)) { 5895 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5896 "qla_target(%d): ATIO with error " 5897 "status %x received\n", vha->vp_idx, 5898 le16_to_cpu(atio->u.isp2x.status)); 5899 break; 5900 } 5901 5902 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5903 if (rc != 0) 5904 return; 5905 5906 rc = qlt_handle_cmd_for_atio(vha, atio); 5907 if (unlikely(rc != 0)) { 5908 switch (rc) { 5909 case -ENODEV: 5910 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5911 "qla_target: Unable to send command to target\n"); 5912 break; 5913 case -EBADF: 5914 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5915 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5916 qlt_send_term_exchange(rsp->qpair, NULL, 5917 atio, 1, 0); 5918 break; 5919 case -EBUSY: 5920 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5921 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5922 vha->vp_idx); 5923 qlt_send_busy(rsp->qpair, atio, 5924 tc_sam_status); 5925 break; 5926 default: 5927 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5928 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5929 vha->vp_idx); 5930 qlt_send_busy(rsp->qpair, atio, 5931 qla_sam_status); 5932 break; 5933 } 5934 } 5935 } 5936 break; 5937 5938 case CONTINUE_TGT_IO_TYPE: 5939 { 5940 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5941 5942 qlt_do_ctio_completion(vha, rsp, entry->handle, 5943 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5944 entry); 5945 break; 5946 } 5947 5948 case CTIO_A64_TYPE: 5949 { 5950 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5951 5952 qlt_do_ctio_completion(vha, rsp, entry->handle, 5953 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5954 entry); 5955 break; 5956 } 5957 5958 case IMMED_NOTIFY_TYPE: 5959 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5960 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5961 break; 5962 5963 case NOTIFY_ACK_TYPE: 5964 if (tgt->notify_ack_expected > 0) { 5965 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5966 5967 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5968 "NOTIFY_ACK seq %08x status %x\n", 5969 le16_to_cpu(entry->u.isp2x.seq_id), 5970 le16_to_cpu(entry->u.isp2x.status)); 5971 tgt->notify_ack_expected--; 5972 if (entry->u.isp2x.status != 5973 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5974 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5975 "qla_target(%d): NOTIFY_ACK " 5976 "failed %x\n", vha->vp_idx, 5977 le16_to_cpu(entry->u.isp2x.status)); 5978 } 5979 } else { 5980 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5981 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5982 vha->vp_idx); 5983 } 5984 break; 5985 5986 case ABTS_RECV_24XX: 5987 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5988 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5989 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5990 break; 5991 5992 case ABTS_RESP_24XX: 5993 if (tgt->abts_resp_expected > 0) { 5994 qlt_handle_abts_completion(vha, rsp, pkt); 5995 } else { 5996 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5997 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5998 "received\n", vha->vp_idx); 5999 } 6000 break; 6001 6002 default: 6003 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6004 "qla_target(%d): Received unknown response pkt " 6005 "type %x\n", vha->vp_idx, pkt->entry_type); 6006 break; 6007 } 6008 6009 } 6010 6011 /* 6012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6013 */ 6014 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6015 uint16_t *mailbox) 6016 { 6017 struct qla_hw_data *ha = vha->hw; 6018 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6019 int login_code; 6020 6021 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6022 return; 6023 6024 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6025 IS_QLA2100(ha)) 6026 return; 6027 /* 6028 * In tgt_stop mode we also should allow all requests to pass. 6029 * Otherwise, some commands can stuck. 6030 */ 6031 6032 6033 switch (code) { 6034 case MBA_RESET: /* Reset */ 6035 case MBA_SYSTEM_ERR: /* System Error */ 6036 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6037 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6039 "qla_target(%d): System error async event %#x " 6040 "occurred", vha->vp_idx, code); 6041 break; 6042 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6043 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6044 break; 6045 6046 case MBA_LOOP_UP: 6047 { 6048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6049 "qla_target(%d): Async LOOP_UP occurred " 6050 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6051 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6052 if (tgt->link_reinit_iocb_pending) { 6053 qlt_send_notify_ack(ha->base_qpair, 6054 &tgt->link_reinit_iocb, 6055 0, 0, 0, 0, 0, 0); 6056 tgt->link_reinit_iocb_pending = 0; 6057 } 6058 break; 6059 } 6060 6061 case MBA_LIP_OCCURRED: 6062 case MBA_LOOP_DOWN: 6063 case MBA_LIP_RESET: 6064 case MBA_RSCN_UPDATE: 6065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6066 "qla_target(%d): Async event %#x occurred " 6067 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6068 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6069 break; 6070 6071 case MBA_REJECTED_FCP_CMD: 6072 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6073 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6074 vha->vp_idx, 6075 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6076 6077 if (mailbox[3] == 1) { 6078 /* exchange starvation. */ 6079 vha->hw->exch_starvation++; 6080 if (vha->hw->exch_starvation > 5) { 6081 ql_log(ql_log_warn, vha, 0xd03a, 6082 "Exchange starvation-. Resetting RISC\n"); 6083 6084 vha->hw->exch_starvation = 0; 6085 if (IS_P3P_TYPE(vha->hw)) 6086 set_bit(FCOE_CTX_RESET_NEEDED, 6087 &vha->dpc_flags); 6088 else 6089 set_bit(ISP_ABORT_NEEDED, 6090 &vha->dpc_flags); 6091 qla2xxx_wake_dpc(vha); 6092 } 6093 } 6094 break; 6095 6096 case MBA_PORT_UPDATE: 6097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6098 "qla_target(%d): Port update async event %#x " 6099 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6100 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6101 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6102 6103 login_code = mailbox[2]; 6104 if (login_code == 0x4) { 6105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6106 "Async MB 2: Got PLOGI Complete\n"); 6107 vha->hw->exch_starvation = 0; 6108 } else if (login_code == 0x7) 6109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6110 "Async MB 2: Port Logged Out\n"); 6111 break; 6112 default: 6113 break; 6114 } 6115 6116 } 6117 6118 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6119 uint16_t loop_id) 6120 { 6121 fc_port_t *fcport, *tfcp, *del; 6122 int rc; 6123 unsigned long flags; 6124 u8 newfcport = 0; 6125 6126 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6127 if (!fcport) { 6128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6129 "qla_target(%d): Allocation of tmp FC port failed", 6130 vha->vp_idx); 6131 return NULL; 6132 } 6133 6134 fcport->loop_id = loop_id; 6135 6136 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6137 if (rc != QLA_SUCCESS) { 6138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6139 "qla_target(%d): Failed to retrieve fcport " 6140 "information -- get_port_database() returned %x " 6141 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6142 kfree(fcport); 6143 return NULL; 6144 } 6145 6146 del = NULL; 6147 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6148 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6149 6150 if (tfcp) { 6151 tfcp->d_id = fcport->d_id; 6152 tfcp->port_type = fcport->port_type; 6153 tfcp->supported_classes = fcport->supported_classes; 6154 tfcp->flags |= fcport->flags; 6155 tfcp->scan_state = QLA_FCPORT_FOUND; 6156 6157 del = fcport; 6158 fcport = tfcp; 6159 } else { 6160 if (vha->hw->current_topology == ISP_CFG_F) 6161 fcport->flags |= FCF_FABRIC_DEVICE; 6162 6163 list_add_tail(&fcport->list, &vha->vp_fcports); 6164 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6165 vha->fcport_count++; 6166 fcport->login_gen++; 6167 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6168 fcport->login_succ = 1; 6169 newfcport = 1; 6170 } 6171 6172 fcport->deleted = 0; 6173 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6174 6175 switch (vha->host->active_mode) { 6176 case MODE_INITIATOR: 6177 case MODE_DUAL: 6178 if (newfcport) { 6179 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6180 qla24xx_sched_upd_fcport(fcport); 6181 } else { 6182 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6183 "%s %d %8phC post gpsc fcp_cnt %d\n", 6184 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6185 qla24xx_post_gpsc_work(vha, fcport); 6186 } 6187 } 6188 break; 6189 6190 case MODE_TARGET: 6191 default: 6192 break; 6193 } 6194 if (del) 6195 qla2x00_free_fcport(del); 6196 6197 return fcport; 6198 } 6199 6200 /* Must be called under tgt_mutex */ 6201 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6202 be_id_t s_id) 6203 { 6204 struct fc_port *sess = NULL; 6205 fc_port_t *fcport = NULL; 6206 int rc, global_resets; 6207 uint16_t loop_id = 0; 6208 6209 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6210 /* 6211 * This is Domain Controller, so it should be 6212 * OK to drop SCSI commands from it. 6213 */ 6214 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6215 "Unable to find initiator with S_ID %x:%x:%x", 6216 s_id.domain, s_id.area, s_id.al_pa); 6217 return NULL; 6218 } 6219 6220 mutex_lock(&vha->vha_tgt.tgt_mutex); 6221 6222 retry: 6223 global_resets = 6224 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6225 6226 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6227 if (rc != 0) { 6228 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6229 6230 ql_log(ql_log_info, vha, 0xf071, 6231 "qla_target(%d): Unable to find " 6232 "initiator with S_ID %x:%x:%x", 6233 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6234 6235 if (rc == -ENOENT) { 6236 qlt_port_logo_t logo; 6237 6238 logo.id = be_to_port_id(s_id); 6239 logo.cmd_count = 1; 6240 qlt_send_first_logo(vha, &logo); 6241 } 6242 6243 return NULL; 6244 } 6245 6246 fcport = qlt_get_port_database(vha, loop_id); 6247 if (!fcport) { 6248 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6249 return NULL; 6250 } 6251 6252 if (global_resets != 6253 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6255 "qla_target(%d): global reset during session discovery " 6256 "(counter was %d, new %d), retrying", vha->vp_idx, 6257 global_resets, 6258 atomic_read(&vha->vha_tgt. 6259 qla_tgt->tgt_global_resets_count)); 6260 goto retry; 6261 } 6262 6263 sess = qlt_create_sess(vha, fcport, true); 6264 6265 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6266 6267 return sess; 6268 } 6269 6270 static void qlt_abort_work(struct qla_tgt *tgt, 6271 struct qla_tgt_sess_work_param *prm) 6272 { 6273 struct scsi_qla_host *vha = tgt->vha; 6274 struct qla_hw_data *ha = vha->hw; 6275 struct fc_port *sess = NULL; 6276 unsigned long flags = 0, flags2 = 0; 6277 be_id_t s_id; 6278 int rc; 6279 6280 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6281 6282 if (tgt->tgt_stop) 6283 goto out_term2; 6284 6285 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6286 6287 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6288 if (!sess) { 6289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6290 6291 sess = qlt_make_local_sess(vha, s_id); 6292 /* sess has got an extra creation ref */ 6293 6294 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6295 if (!sess) 6296 goto out_term2; 6297 } else { 6298 if (sess->deleted) { 6299 sess = NULL; 6300 goto out_term2; 6301 } 6302 6303 if (!kref_get_unless_zero(&sess->sess_kref)) { 6304 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6305 "%s: kref_get fail %8phC \n", 6306 __func__, sess->port_name); 6307 sess = NULL; 6308 goto out_term2; 6309 } 6310 } 6311 6312 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6313 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6314 6315 ha->tgt.tgt_ops->put_sess(sess); 6316 6317 if (rc != 0) 6318 goto out_term; 6319 return; 6320 6321 out_term2: 6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6323 6324 out_term: 6325 spin_lock_irqsave(&ha->hardware_lock, flags); 6326 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6327 FCP_TMF_REJECTED, false); 6328 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6329 } 6330 6331 static void qlt_sess_work_fn(struct work_struct *work) 6332 { 6333 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6334 struct scsi_qla_host *vha = tgt->vha; 6335 unsigned long flags; 6336 6337 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6338 6339 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6340 while (!list_empty(&tgt->sess_works_list)) { 6341 struct qla_tgt_sess_work_param *prm = list_entry( 6342 tgt->sess_works_list.next, typeof(*prm), 6343 sess_works_list_entry); 6344 6345 /* 6346 * This work can be scheduled on several CPUs at time, so we 6347 * must delete the entry to eliminate double processing 6348 */ 6349 list_del(&prm->sess_works_list_entry); 6350 6351 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6352 6353 switch (prm->type) { 6354 case QLA_TGT_SESS_WORK_ABORT: 6355 qlt_abort_work(tgt, prm); 6356 break; 6357 default: 6358 BUG_ON(1); 6359 break; 6360 } 6361 6362 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6363 6364 kfree(prm); 6365 } 6366 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6367 } 6368 6369 /* Must be called under tgt_host_action_mutex */ 6370 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6371 { 6372 struct qla_tgt *tgt; 6373 int rc, i; 6374 struct qla_qpair_hint *h; 6375 6376 if (!QLA_TGT_MODE_ENABLED()) 6377 return 0; 6378 6379 if (!IS_TGT_MODE_CAPABLE(ha)) { 6380 ql_log(ql_log_warn, base_vha, 0xe070, 6381 "This adapter does not support target mode.\n"); 6382 return 0; 6383 } 6384 6385 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6386 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6387 6388 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6389 6390 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6391 if (!tgt) { 6392 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6393 "Unable to allocate struct qla_tgt\n"); 6394 return -ENOMEM; 6395 } 6396 6397 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6398 sizeof(struct qla_qpair_hint), 6399 GFP_KERNEL); 6400 if (!tgt->qphints) { 6401 kfree(tgt); 6402 ql_log(ql_log_warn, base_vha, 0x0197, 6403 "Unable to allocate qpair hints.\n"); 6404 return -ENOMEM; 6405 } 6406 6407 qla2xxx_driver_template.supported_mode |= MODE_TARGET; 6408 6409 rc = btree_init64(&tgt->lun_qpair_map); 6410 if (rc) { 6411 kfree(tgt->qphints); 6412 kfree(tgt); 6413 ql_log(ql_log_info, base_vha, 0x0198, 6414 "Unable to initialize lun_qpair_map btree\n"); 6415 return -EIO; 6416 } 6417 h = &tgt->qphints[0]; 6418 h->qpair = ha->base_qpair; 6419 INIT_LIST_HEAD(&h->hint_elem); 6420 h->cpuid = ha->base_qpair->cpuid; 6421 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6422 6423 for (i = 0; i < ha->max_qpairs; i++) { 6424 unsigned long flags; 6425 6426 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6427 6428 h = &tgt->qphints[i + 1]; 6429 INIT_LIST_HEAD(&h->hint_elem); 6430 if (qpair) { 6431 h->qpair = qpair; 6432 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6433 list_add_tail(&h->hint_elem, &qpair->hints_list); 6434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6435 h->cpuid = qpair->cpuid; 6436 } 6437 } 6438 6439 tgt->ha = ha; 6440 tgt->vha = base_vha; 6441 init_waitqueue_head(&tgt->waitQ); 6442 spin_lock_init(&tgt->sess_work_lock); 6443 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6444 INIT_LIST_HEAD(&tgt->sess_works_list); 6445 atomic_set(&tgt->tgt_global_resets_count, 0); 6446 6447 base_vha->vha_tgt.qla_tgt = tgt; 6448 6449 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6450 "qla_target(%d): using 64 Bit PCI addressing", 6451 base_vha->vp_idx); 6452 /* 3 is reserved */ 6453 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6454 6455 mutex_lock(&qla_tgt_mutex); 6456 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6457 mutex_unlock(&qla_tgt_mutex); 6458 6459 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6460 ha->tgt.tgt_ops->add_target(base_vha); 6461 6462 return 0; 6463 } 6464 6465 /* Must be called under tgt_host_action_mutex */ 6466 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6467 { 6468 if (!vha->vha_tgt.qla_tgt) 6469 return 0; 6470 6471 if (vha->fc_vport) { 6472 qlt_release(vha->vha_tgt.qla_tgt); 6473 return 0; 6474 } 6475 6476 /* free left over qfull cmds */ 6477 qlt_init_term_exchange(vha); 6478 6479 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6480 vha->host_no, ha); 6481 qlt_release(vha->vha_tgt.qla_tgt); 6482 6483 return 0; 6484 } 6485 6486 void qla_remove_hostmap(struct qla_hw_data *ha) 6487 { 6488 struct scsi_qla_host *node; 6489 u32 key = 0; 6490 6491 btree_for_each_safe32(&ha->host_map, key, node) 6492 btree_remove32(&ha->host_map, key); 6493 6494 btree_destroy32(&ha->host_map); 6495 } 6496 6497 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6498 unsigned char *b) 6499 { 6500 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6501 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6502 put_unaligned_be64(wwpn, b); 6503 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6504 } 6505 6506 /** 6507 * qlt_lport_register - register lport with external module 6508 * 6509 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6510 * @phys_wwpn: physical port WWPN 6511 * @npiv_wwpn: NPIV WWPN 6512 * @npiv_wwnn: NPIV WWNN 6513 * @callback: lport initialization callback for tcm_qla2xxx code 6514 */ 6515 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6516 u64 npiv_wwpn, u64 npiv_wwnn, 6517 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6518 { 6519 struct qla_tgt *tgt; 6520 struct scsi_qla_host *vha; 6521 struct qla_hw_data *ha; 6522 struct Scsi_Host *host; 6523 unsigned long flags; 6524 int rc; 6525 u8 b[WWN_SIZE]; 6526 6527 mutex_lock(&qla_tgt_mutex); 6528 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6529 vha = tgt->vha; 6530 ha = vha->hw; 6531 6532 host = vha->host; 6533 if (!host) 6534 continue; 6535 6536 if (!(host->hostt->supported_mode & MODE_TARGET)) 6537 continue; 6538 6539 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6540 continue; 6541 6542 spin_lock_irqsave(&ha->hardware_lock, flags); 6543 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6544 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6545 host->host_no); 6546 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6547 continue; 6548 } 6549 if (tgt->tgt_stop) { 6550 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6551 host->host_no); 6552 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6553 continue; 6554 } 6555 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6556 6557 if (!scsi_host_get(host)) { 6558 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6559 "Unable to scsi_host_get() for" 6560 " qla2xxx scsi_host\n"); 6561 continue; 6562 } 6563 qlt_lport_dump(vha, phys_wwpn, b); 6564 6565 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6566 scsi_host_put(host); 6567 continue; 6568 } 6569 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6570 if (rc != 0) 6571 scsi_host_put(host); 6572 6573 mutex_unlock(&qla_tgt_mutex); 6574 return rc; 6575 } 6576 mutex_unlock(&qla_tgt_mutex); 6577 6578 return -ENODEV; 6579 } 6580 EXPORT_SYMBOL(qlt_lport_register); 6581 6582 /** 6583 * qlt_lport_deregister - Degister lport 6584 * 6585 * @vha: Registered scsi_qla_host pointer 6586 */ 6587 void qlt_lport_deregister(struct scsi_qla_host *vha) 6588 { 6589 struct qla_hw_data *ha = vha->hw; 6590 struct Scsi_Host *sh = vha->host; 6591 /* 6592 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6593 */ 6594 vha->vha_tgt.target_lport_ptr = NULL; 6595 ha->tgt.tgt_ops = NULL; 6596 /* 6597 * Release the Scsi_Host reference for the underlying qla2xxx host 6598 */ 6599 scsi_host_put(sh); 6600 } 6601 EXPORT_SYMBOL(qlt_lport_deregister); 6602 6603 /* Must be called under HW lock */ 6604 void qlt_set_mode(struct scsi_qla_host *vha) 6605 { 6606 switch (vha->qlini_mode) { 6607 case QLA2XXX_INI_MODE_DISABLED: 6608 case QLA2XXX_INI_MODE_EXCLUSIVE: 6609 vha->host->active_mode = MODE_TARGET; 6610 break; 6611 case QLA2XXX_INI_MODE_ENABLED: 6612 vha->host->active_mode = MODE_INITIATOR; 6613 break; 6614 case QLA2XXX_INI_MODE_DUAL: 6615 vha->host->active_mode = MODE_DUAL; 6616 break; 6617 default: 6618 break; 6619 } 6620 } 6621 6622 /* Must be called under HW lock */ 6623 static void qlt_clear_mode(struct scsi_qla_host *vha) 6624 { 6625 switch (vha->qlini_mode) { 6626 case QLA2XXX_INI_MODE_DISABLED: 6627 vha->host->active_mode = MODE_UNKNOWN; 6628 break; 6629 case QLA2XXX_INI_MODE_EXCLUSIVE: 6630 vha->host->active_mode = MODE_INITIATOR; 6631 break; 6632 case QLA2XXX_INI_MODE_ENABLED: 6633 case QLA2XXX_INI_MODE_DUAL: 6634 vha->host->active_mode = MODE_INITIATOR; 6635 break; 6636 default: 6637 break; 6638 } 6639 } 6640 6641 /* 6642 * qla_tgt_enable_vha - NO LOCK HELD 6643 * 6644 * host_reset, bring up w/ Target Mode Enabled 6645 */ 6646 void 6647 qlt_enable_vha(struct scsi_qla_host *vha) 6648 { 6649 struct qla_hw_data *ha = vha->hw; 6650 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6651 unsigned long flags; 6652 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6653 6654 if (!tgt) { 6655 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6656 "Unable to locate qla_tgt pointer from" 6657 " struct qla_hw_data\n"); 6658 dump_stack(); 6659 return; 6660 } 6661 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6662 return; 6663 6664 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6665 ha->tgt.num_act_qpairs = ha->max_qpairs; 6666 spin_lock_irqsave(&ha->hardware_lock, flags); 6667 tgt->tgt_stopped = 0; 6668 qlt_set_mode(vha); 6669 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6670 6671 mutex_lock(&ha->optrom_mutex); 6672 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6673 "%s.\n", __func__); 6674 if (vha->vp_idx) { 6675 qla24xx_disable_vp(vha); 6676 qla24xx_enable_vp(vha); 6677 } else { 6678 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6679 qla2xxx_wake_dpc(base_vha); 6680 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6681 QLA_SUCCESS); 6682 } 6683 mutex_unlock(&ha->optrom_mutex); 6684 } 6685 EXPORT_SYMBOL(qlt_enable_vha); 6686 6687 /* 6688 * qla_tgt_disable_vha - NO LOCK HELD 6689 * 6690 * Disable Target Mode and reset the adapter 6691 */ 6692 static void qlt_disable_vha(struct scsi_qla_host *vha) 6693 { 6694 struct qla_hw_data *ha = vha->hw; 6695 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6696 unsigned long flags; 6697 6698 if (!tgt) { 6699 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6700 "Unable to locate qla_tgt pointer from" 6701 " struct qla_hw_data\n"); 6702 dump_stack(); 6703 return; 6704 } 6705 6706 spin_lock_irqsave(&ha->hardware_lock, flags); 6707 qlt_clear_mode(vha); 6708 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6709 6710 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6711 qla2xxx_wake_dpc(vha); 6712 6713 /* 6714 * We are expecting the offline state. 6715 * QLA_FUNCTION_FAILED means that adapter is offline. 6716 */ 6717 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6718 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6719 "adapter is offline\n"); 6720 } 6721 6722 /* 6723 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6724 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6725 * members. 6726 */ 6727 void 6728 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6729 { 6730 vha->vha_tgt.qla_tgt = NULL; 6731 6732 mutex_init(&vha->vha_tgt.tgt_mutex); 6733 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6734 6735 INIT_LIST_HEAD(&vha->unknown_atio_list); 6736 INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn); 6737 6738 qlt_clear_mode(vha); 6739 6740 /* 6741 * NOTE: Currently the value is kept the same for <24xx and 6742 * >=24xx ISPs. If it is necessary to change it, 6743 * the check should be added for specific ISPs, 6744 * assigning the value appropriately. 6745 */ 6746 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6747 6748 qlt_add_target(ha, vha); 6749 } 6750 6751 u8 6752 qlt_rff_id(struct scsi_qla_host *vha) 6753 { 6754 u8 fc4_feature = 0; 6755 /* 6756 * FC-4 Feature bit 0 indicates target functionality to the name server. 6757 */ 6758 if (qla_tgt_mode_enabled(vha)) { 6759 fc4_feature = BIT_0; 6760 } else if (qla_ini_mode_enabled(vha)) { 6761 fc4_feature = BIT_1; 6762 } else if (qla_dual_mode_enabled(vha)) 6763 fc4_feature = BIT_0 | BIT_1; 6764 6765 return fc4_feature; 6766 } 6767 6768 /* 6769 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6770 * @ha: HA context 6771 * 6772 * Beginning of ATIO ring has initialization control block already built 6773 * by nvram config routine. 6774 * 6775 * Returns 0 on success. 6776 */ 6777 void 6778 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6779 { 6780 struct qla_hw_data *ha = vha->hw; 6781 uint16_t cnt; 6782 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6783 6784 if (qla_ini_mode_enabled(vha)) 6785 return; 6786 6787 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6788 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6789 pkt++; 6790 } 6791 6792 } 6793 6794 /* 6795 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6796 * @ha: SCSI driver HA context 6797 */ 6798 void 6799 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6800 { 6801 struct qla_hw_data *ha = vha->hw; 6802 struct atio_from_isp *pkt; 6803 int cnt, i; 6804 6805 if (!ha->flags.fw_started) 6806 return; 6807 6808 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6809 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6810 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6811 cnt = pkt->u.raw.entry_count; 6812 6813 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6814 /* 6815 * This packet is corrupted. The header + payload 6816 * can not be trusted. There is no point in passing 6817 * it further up. 6818 */ 6819 ql_log(ql_log_warn, vha, 0xd03c, 6820 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6821 &pkt->u.isp24.fcp_hdr.s_id, 6822 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6823 pkt->u.isp24.exchange_addr, pkt); 6824 6825 adjust_corrupted_atio(pkt); 6826 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6827 ha_locked, 0); 6828 } else { 6829 qlt_24xx_atio_pkt_all_vps(vha, 6830 (struct atio_from_isp *)pkt, ha_locked); 6831 } 6832 6833 for (i = 0; i < cnt; i++) { 6834 ha->tgt.atio_ring_index++; 6835 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6836 ha->tgt.atio_ring_index = 0; 6837 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6838 } else 6839 ha->tgt.atio_ring_ptr++; 6840 6841 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6842 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6843 } 6844 wmb(); 6845 } 6846 6847 /* Adjust ring index */ 6848 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6849 } 6850 6851 void 6852 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6853 { 6854 struct qla_hw_data *ha = vha->hw; 6855 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6856 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6857 6858 if (!QLA_TGT_MODE_ENABLED()) 6859 return; 6860 6861 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6862 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6863 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6864 6865 if (ha->flags.msix_enabled) { 6866 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6867 icb->msix_atio = cpu_to_le16(msix->entry); 6868 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6869 ql_dbg(ql_dbg_init, vha, 0xf072, 6870 "Registering ICB vector 0x%x for atio que.\n", 6871 msix->entry); 6872 } 6873 } else { 6874 /* INTx|MSI */ 6875 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6876 icb->msix_atio = 0; 6877 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6878 ql_dbg(ql_dbg_init, vha, 0xf072, 6879 "%s: Use INTx for ATIOQ.\n", __func__); 6880 } 6881 } 6882 } 6883 6884 void 6885 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6886 { 6887 struct qla_hw_data *ha = vha->hw; 6888 u32 tmp; 6889 6890 if (!QLA_TGT_MODE_ENABLED()) 6891 return; 6892 6893 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6894 if (!ha->tgt.saved_set) { 6895 /* We save only once */ 6896 ha->tgt.saved_exchange_count = nv->exchange_count; 6897 ha->tgt.saved_firmware_options_1 = 6898 nv->firmware_options_1; 6899 ha->tgt.saved_firmware_options_2 = 6900 nv->firmware_options_2; 6901 ha->tgt.saved_firmware_options_3 = 6902 nv->firmware_options_3; 6903 ha->tgt.saved_set = 1; 6904 } 6905 6906 if (qla_tgt_mode_enabled(vha)) 6907 nv->exchange_count = cpu_to_le16(0xFFFF); 6908 else /* dual */ 6909 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6910 6911 /* Enable target mode */ 6912 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6913 6914 /* Disable ini mode, if requested */ 6915 if (qla_tgt_mode_enabled(vha)) 6916 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6917 6918 /* Disable Full Login after LIP */ 6919 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6920 /* Enable initial LIP */ 6921 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6922 if (ql2xtgt_tape_enable) 6923 /* Enable FC Tape support */ 6924 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6925 else 6926 /* Disable FC Tape support */ 6927 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6928 6929 /* Disable Full Login after LIP */ 6930 nv->host_p &= cpu_to_le32(~BIT_10); 6931 6932 /* 6933 * clear BIT 15 explicitly as we have seen at least 6934 * a couple of instances where this was set and this 6935 * was causing the firmware to not be initialized. 6936 */ 6937 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6938 /* Enable target PRLI control */ 6939 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6940 6941 if (IS_QLA25XX(ha)) { 6942 /* Change Loop-prefer to Pt-Pt */ 6943 tmp = ~(BIT_4|BIT_5|BIT_6); 6944 nv->firmware_options_2 &= cpu_to_le32(tmp); 6945 tmp = P2P << 4; 6946 nv->firmware_options_2 |= cpu_to_le32(tmp); 6947 } 6948 } else { 6949 if (ha->tgt.saved_set) { 6950 nv->exchange_count = ha->tgt.saved_exchange_count; 6951 nv->firmware_options_1 = 6952 ha->tgt.saved_firmware_options_1; 6953 nv->firmware_options_2 = 6954 ha->tgt.saved_firmware_options_2; 6955 nv->firmware_options_3 = 6956 ha->tgt.saved_firmware_options_3; 6957 } 6958 return; 6959 } 6960 6961 if (ha->base_qpair->enable_class_2) { 6962 if (vha->flags.init_done) 6963 fc_host_supported_classes(vha->host) = 6964 FC_COS_CLASS2 | FC_COS_CLASS3; 6965 6966 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6967 } else { 6968 if (vha->flags.init_done) 6969 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6970 6971 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6972 } 6973 } 6974 6975 void 6976 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6977 struct init_cb_24xx *icb) 6978 { 6979 struct qla_hw_data *ha = vha->hw; 6980 6981 if (!QLA_TGT_MODE_ENABLED()) 6982 return; 6983 6984 if (ha->tgt.node_name_set) { 6985 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6986 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6987 } 6988 } 6989 6990 void 6991 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6992 { 6993 struct qla_hw_data *ha = vha->hw; 6994 u32 tmp; 6995 6996 if (!QLA_TGT_MODE_ENABLED()) 6997 return; 6998 6999 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7000 if (!ha->tgt.saved_set) { 7001 /* We save only once */ 7002 ha->tgt.saved_exchange_count = nv->exchange_count; 7003 ha->tgt.saved_firmware_options_1 = 7004 nv->firmware_options_1; 7005 ha->tgt.saved_firmware_options_2 = 7006 nv->firmware_options_2; 7007 ha->tgt.saved_firmware_options_3 = 7008 nv->firmware_options_3; 7009 ha->tgt.saved_set = 1; 7010 } 7011 7012 if (qla_tgt_mode_enabled(vha)) 7013 nv->exchange_count = cpu_to_le16(0xFFFF); 7014 else /* dual */ 7015 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7016 7017 /* Enable target mode */ 7018 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7019 7020 /* Disable ini mode, if requested */ 7021 if (qla_tgt_mode_enabled(vha)) 7022 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7023 /* Disable Full Login after LIP */ 7024 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7025 /* Enable initial LIP */ 7026 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7027 /* 7028 * clear BIT 15 explicitly as we have seen at 7029 * least a couple of instances where this was set 7030 * and this was causing the firmware to not be 7031 * initialized. 7032 */ 7033 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7034 if (ql2xtgt_tape_enable) 7035 /* Enable FC tape support */ 7036 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7037 else 7038 /* Disable FC tape support */ 7039 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7040 7041 /* Disable Full Login after LIP */ 7042 nv->host_p &= cpu_to_le32(~BIT_10); 7043 /* Enable target PRLI control */ 7044 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7045 7046 /* Change Loop-prefer to Pt-Pt */ 7047 tmp = ~(BIT_4|BIT_5|BIT_6); 7048 nv->firmware_options_2 &= cpu_to_le32(tmp); 7049 tmp = P2P << 4; 7050 nv->firmware_options_2 |= cpu_to_le32(tmp); 7051 } else { 7052 if (ha->tgt.saved_set) { 7053 nv->exchange_count = ha->tgt.saved_exchange_count; 7054 nv->firmware_options_1 = 7055 ha->tgt.saved_firmware_options_1; 7056 nv->firmware_options_2 = 7057 ha->tgt.saved_firmware_options_2; 7058 nv->firmware_options_3 = 7059 ha->tgt.saved_firmware_options_3; 7060 } 7061 return; 7062 } 7063 7064 if (ha->base_qpair->enable_class_2) { 7065 if (vha->flags.init_done) 7066 fc_host_supported_classes(vha->host) = 7067 FC_COS_CLASS2 | FC_COS_CLASS3; 7068 7069 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7070 } else { 7071 if (vha->flags.init_done) 7072 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7073 7074 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7075 } 7076 } 7077 7078 void 7079 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7080 struct init_cb_81xx *icb) 7081 { 7082 struct qla_hw_data *ha = vha->hw; 7083 7084 if (!QLA_TGT_MODE_ENABLED()) 7085 return; 7086 7087 if (ha->tgt.node_name_set) { 7088 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7089 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7090 } 7091 } 7092 7093 void 7094 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7095 { 7096 if (!QLA_TGT_MODE_ENABLED()) 7097 return; 7098 7099 ha->msix_count += 1; /* For ATIO Q */ 7100 } 7101 7102 7103 void 7104 qlt_modify_vp_config(struct scsi_qla_host *vha, 7105 struct vp_config_entry_24xx *vpmod) 7106 { 7107 /* enable target mode. Bit5 = 1 => disable */ 7108 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7109 vpmod->options_idx1 &= ~BIT_5; 7110 7111 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7112 if (qla_tgt_mode_enabled(vha)) 7113 vpmod->options_idx1 &= ~BIT_4; 7114 } 7115 7116 void 7117 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7118 { 7119 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7120 if (!QLA_TGT_MODE_ENABLED()) 7121 return; 7122 7123 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7124 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7125 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7126 } else { 7127 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7128 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7129 } 7130 7131 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7132 7133 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7134 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7135 qlt_unknown_atio_work_fn); 7136 7137 qlt_clear_mode(base_vha); 7138 7139 qla_update_vp_map(base_vha, SET_VP_IDX); 7140 } 7141 7142 irqreturn_t 7143 qla83xx_msix_atio_q(int irq, void *dev_id) 7144 { 7145 struct rsp_que *rsp; 7146 scsi_qla_host_t *vha; 7147 struct qla_hw_data *ha; 7148 unsigned long flags; 7149 7150 rsp = (struct rsp_que *) dev_id; 7151 ha = rsp->hw; 7152 vha = pci_get_drvdata(ha->pdev); 7153 7154 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7155 7156 qlt_24xx_process_atio_queue(vha, 0); 7157 7158 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7159 7160 return IRQ_HANDLED; 7161 } 7162 7163 static void 7164 qlt_handle_abts_recv_work(struct work_struct *work) 7165 { 7166 struct qla_tgt_sess_op *op = container_of(work, 7167 struct qla_tgt_sess_op, work); 7168 scsi_qla_host_t *vha = op->vha; 7169 struct qla_hw_data *ha = vha->hw; 7170 unsigned long flags; 7171 7172 if (qla2x00_reset_active(vha) || 7173 (op->chip_reset != ha->base_qpair->chip_reset)) 7174 return; 7175 7176 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7177 qlt_24xx_process_atio_queue(vha, 0); 7178 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7179 7180 spin_lock_irqsave(&ha->hardware_lock, flags); 7181 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7182 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7183 7184 kfree(op); 7185 } 7186 7187 void 7188 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7189 response_t *pkt) 7190 { 7191 struct qla_tgt_sess_op *op; 7192 7193 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7194 7195 if (!op) { 7196 /* do not reach for ATIO queue here. This is best effort err 7197 * recovery at this point. 7198 */ 7199 qlt_response_pkt_all_vps(vha, rsp, pkt); 7200 return; 7201 } 7202 7203 memcpy(&op->atio, pkt, sizeof(*pkt)); 7204 op->vha = vha; 7205 op->chip_reset = vha->hw->base_qpair->chip_reset; 7206 op->rsp = rsp; 7207 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7208 queue_work(qla_tgt_wq, &op->work); 7209 return; 7210 } 7211 7212 int 7213 qlt_mem_alloc(struct qla_hw_data *ha) 7214 { 7215 if (!QLA_TGT_MODE_ENABLED()) 7216 return 0; 7217 7218 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7219 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7220 &ha->tgt.atio_dma, GFP_KERNEL); 7221 if (!ha->tgt.atio_ring) { 7222 return -ENOMEM; 7223 } 7224 return 0; 7225 } 7226 7227 void 7228 qlt_mem_free(struct qla_hw_data *ha) 7229 { 7230 if (!QLA_TGT_MODE_ENABLED()) 7231 return; 7232 7233 if (ha->tgt.atio_ring) { 7234 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7235 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7236 ha->tgt.atio_dma); 7237 } 7238 ha->tgt.atio_ring = NULL; 7239 ha->tgt.atio_dma = 0; 7240 } 7241 7242 static int __init qlt_parse_ini_mode(void) 7243 { 7244 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7245 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7246 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7247 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7248 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7249 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7250 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7251 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7252 else 7253 return false; 7254 7255 return true; 7256 } 7257 7258 int __init qlt_init(void) 7259 { 7260 int ret; 7261 7262 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7263 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7264 7265 if (!qlt_parse_ini_mode()) { 7266 ql_log(ql_log_fatal, NULL, 0xe06b, 7267 "qlt_parse_ini_mode() failed\n"); 7268 return -EINVAL; 7269 } 7270 7271 if (!QLA_TGT_MODE_ENABLED()) 7272 return 0; 7273 7274 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7275 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7276 qla_tgt_mgmt_cmd), 0, NULL); 7277 if (!qla_tgt_mgmt_cmd_cachep) { 7278 ql_log(ql_log_fatal, NULL, 0xd04b, 7279 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7280 return -ENOMEM; 7281 } 7282 7283 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7284 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7285 0, NULL); 7286 7287 if (!qla_tgt_plogi_cachep) { 7288 ql_log(ql_log_fatal, NULL, 0xe06d, 7289 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7290 ret = -ENOMEM; 7291 goto out_mgmt_cmd_cachep; 7292 } 7293 7294 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7295 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7296 if (!qla_tgt_mgmt_cmd_mempool) { 7297 ql_log(ql_log_fatal, NULL, 0xe06e, 7298 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7299 ret = -ENOMEM; 7300 goto out_plogi_cachep; 7301 } 7302 7303 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7304 if (!qla_tgt_wq) { 7305 ql_log(ql_log_fatal, NULL, 0xe06f, 7306 "alloc_workqueue for qla_tgt_wq failed\n"); 7307 ret = -ENOMEM; 7308 goto out_cmd_mempool; 7309 } 7310 /* 7311 * Return 1 to signal that initiator-mode is being disabled 7312 */ 7313 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7314 7315 out_cmd_mempool: 7316 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7317 out_plogi_cachep: 7318 kmem_cache_destroy(qla_tgt_plogi_cachep); 7319 out_mgmt_cmd_cachep: 7320 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7321 return ret; 7322 } 7323 7324 void qlt_exit(void) 7325 { 7326 if (!QLA_TGT_MODE_ENABLED()) 7327 return; 7328 7329 destroy_workqueue(qla_tgt_wq); 7330 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7331 kmem_cache_destroy(qla_tgt_plogi_cachep); 7332 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7333 } 7334