1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/blkdev.h> 21 #include <linux/interrupt.h> 22 #include <linux/pci.h> 23 #include <linux/delay.h> 24 #include <linux/list.h> 25 #include <linux/workqueue.h> 26 #include <asm/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 54 "For Dual Mode (qlini_mode=dual), this parameter determines " 55 "the percentage of exchanges/cmds FW will allocate resources " 56 "for Target mode."); 57 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum fcp_resp_rsp_codes { 74 FCP_TMF_CMPL = 0, 75 FCP_DATA_LEN_INVALID = 1, 76 FCP_CMND_FIELDS_INVALID = 2, 77 FCP_DATA_PARAM_MISMATCH = 3, 78 FCP_TMF_REJECTED = 4, 79 FCP_TMF_FAILED = 5, 80 FCP_TMF_INVALID_LUN = 9, 81 }; 82 83 /* 84 * fc_pri_ta from scsi/fc/fc_fcp.h 85 */ 86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 90 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 93 94 /* 95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 96 * must be called under HW lock and could unlock/lock it inside. 97 * It isn't an issue, since in the current implementation on the time when 98 * those functions are called: 99 * 100 * - Either context is IRQ and only IRQ handler can modify HW data, 101 * including rings related fields, 102 * 103 * - Or access to target mode variables from struct qla_tgt doesn't 104 * cross those functions boundaries, except tgt_stop, which 105 * additionally protected by irq_cmd_count. 106 */ 107 /* Predefs for callbacks handed to qla2xxx LLD */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static void qlt_send_notify_ack(struct qla_qpair *qpair, 121 struct imm_ntfy_from_isp *ntfy, 122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static const char *prot_op_str(u32 prot_op) 147 { 148 switch (prot_op) { 149 case TARGET_PROT_NORMAL: return "NORMAL"; 150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 154 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 156 default: return "UNKNOWN"; 157 } 158 } 159 160 /* This API intentionally takes dest as a parameter, rather than returning 161 * int value to avoid caller forgetting to issue wmb() after the store */ 162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 163 { 164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 165 *dest = atomic_inc_return(&base_vha->generation_tick); 166 /* memory barrier */ 167 wmb(); 168 } 169 170 /* Might release hw lock, then reaquire!! */ 171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 172 { 173 /* Send marker if required */ 174 if (unlikely(vha->marker_needed != 0)) { 175 int rc = qla2x00_issue_marker(vha, vha_locked); 176 177 if (rc != QLA_SUCCESS) { 178 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 179 "qla_target(%d): issue_marker() failed\n", 180 vha->vp_idx); 181 } 182 return rc; 183 } 184 return QLA_SUCCESS; 185 } 186 187 static inline 188 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 189 be_id_t d_id) 190 { 191 struct scsi_qla_host *host; 192 uint32_t key; 193 194 if (vha->d_id.b.area == d_id.area && 195 vha->d_id.b.domain == d_id.domain && 196 vha->d_id.b.al_pa == d_id.al_pa) 197 return vha; 198 199 key = be_to_port_id(d_id).b24; 200 201 host = btree_lookup32(&vha->hw->tgt.host_map, key); 202 if (!host) 203 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 204 "Unable to find host %06x\n", key); 205 206 return host; 207 } 208 209 static inline 210 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 211 uint16_t vp_idx) 212 { 213 struct qla_hw_data *ha = vha->hw; 214 215 if (vha->vp_idx == vp_idx) 216 return vha; 217 218 BUG_ON(ha->tgt.tgt_vp_map == NULL); 219 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 220 return ha->tgt.tgt_vp_map[vp_idx].vha; 221 222 return NULL; 223 } 224 225 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 226 { 227 unsigned long flags; 228 229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 230 231 vha->hw->tgt.num_pend_cmds++; 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 233 vha->qla_stats.stat_max_pend_cmds = 234 vha->hw->tgt.num_pend_cmds; 235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 236 } 237 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 238 { 239 unsigned long flags; 240 241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 242 vha->hw->tgt.num_pend_cmds--; 243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 244 } 245 246 247 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 248 struct atio_from_isp *atio, uint8_t ha_locked) 249 { 250 struct qla_tgt_sess_op *u; 251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 252 unsigned long flags; 253 254 if (tgt->tgt_stop) { 255 ql_dbg(ql_dbg_async, vha, 0x502c, 256 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 257 vha->vp_idx); 258 goto out_term; 259 } 260 261 u = kzalloc(sizeof(*u), GFP_ATOMIC); 262 if (u == NULL) 263 goto out_term; 264 265 u->vha = vha; 266 memcpy(&u->atio, atio, sizeof(*atio)); 267 INIT_LIST_HEAD(&u->cmd_list); 268 269 spin_lock_irqsave(&vha->cmd_list_lock, flags); 270 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 271 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 272 273 schedule_delayed_work(&vha->unknown_atio_work, 1); 274 275 out: 276 return; 277 278 out_term: 279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 280 goto out; 281 } 282 283 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 284 uint8_t ha_locked) 285 { 286 struct qla_tgt_sess_op *u, *t; 287 scsi_qla_host_t *host; 288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 289 unsigned long flags; 290 uint8_t queued = 0; 291 292 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 293 if (u->aborted) { 294 ql_dbg(ql_dbg_async, vha, 0x502e, 295 "Freeing unknown %s %p, because of Abort\n", 296 "ATIO_TYPE7", u); 297 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 298 &u->atio, ha_locked, 0); 299 goto abort; 300 } 301 302 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 303 if (host != NULL) { 304 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 305 "Requeuing unknown ATIO_TYPE7 %p\n", u); 306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 307 } else if (tgt->tgt_stop) { 308 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 309 "Freeing unknown %s %p, because tgt is being stopped\n", 310 "ATIO_TYPE7", u); 311 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 312 &u->atio, ha_locked, 0); 313 } else { 314 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 315 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 316 if (!queued) { 317 queued = 1; 318 schedule_delayed_work(&vha->unknown_atio_work, 319 1); 320 } 321 continue; 322 } 323 324 abort: 325 spin_lock_irqsave(&vha->cmd_list_lock, flags); 326 list_del(&u->cmd_list); 327 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 328 kfree(u); 329 } 330 } 331 332 void qlt_unknown_atio_work_fn(struct work_struct *work) 333 { 334 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 335 struct scsi_qla_host, unknown_atio_work); 336 337 qlt_try_to_dequeue_unknown_atios(vha, 0); 338 } 339 340 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 341 struct atio_from_isp *atio, uint8_t ha_locked) 342 { 343 ql_dbg(ql_dbg_tgt, vha, 0xe072, 344 "%s: qla_target(%d): type %x ox_id %04x\n", 345 __func__, vha->vp_idx, atio->u.raw.entry_type, 346 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 347 348 switch (atio->u.raw.entry_type) { 349 case ATIO_TYPE7: 350 { 351 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 352 atio->u.isp24.fcp_hdr.d_id); 353 if (unlikely(NULL == host)) { 354 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 355 "qla_target(%d): Received ATIO_TYPE7 " 356 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 357 atio->u.isp24.fcp_hdr.d_id.domain, 358 atio->u.isp24.fcp_hdr.d_id.area, 359 atio->u.isp24.fcp_hdr.d_id.al_pa); 360 361 362 qlt_queue_unknown_atio(vha, atio, ha_locked); 363 break; 364 } 365 if (unlikely(!list_empty(&vha->unknown_atio_list))) 366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 367 368 qlt_24xx_atio_pkt(host, atio, ha_locked); 369 break; 370 } 371 372 case IMMED_NOTIFY_TYPE: 373 { 374 struct scsi_qla_host *host = vha; 375 struct imm_ntfy_from_isp *entry = 376 (struct imm_ntfy_from_isp *)atio; 377 378 qlt_issue_marker(vha, ha_locked); 379 380 if ((entry->u.isp24.vp_index != 0xFF) && 381 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 382 host = qlt_find_host_by_vp_idx(vha, 383 entry->u.isp24.vp_index); 384 if (unlikely(!host)) { 385 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 386 "qla_target(%d): Received " 387 "ATIO (IMMED_NOTIFY_TYPE) " 388 "with unknown vp_index %d\n", 389 vha->vp_idx, entry->u.isp24.vp_index); 390 break; 391 } 392 } 393 qlt_24xx_atio_pkt(host, atio, ha_locked); 394 break; 395 } 396 397 case VP_RPT_ID_IOCB_TYPE: 398 qla24xx_report_id_acquisition(vha, 399 (struct vp_rpt_id_entry_24xx *)atio); 400 break; 401 402 case ABTS_RECV_24XX: 403 { 404 struct abts_recv_from_24xx *entry = 405 (struct abts_recv_from_24xx *)atio; 406 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 407 entry->vp_index); 408 unsigned long flags; 409 410 if (unlikely(!host)) { 411 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 412 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 413 "received, with unknown vp_index %d\n", 414 vha->vp_idx, entry->vp_index); 415 break; 416 } 417 if (!ha_locked) 418 spin_lock_irqsave(&host->hw->hardware_lock, flags); 419 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 420 if (!ha_locked) 421 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 422 break; 423 } 424 425 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 426 427 default: 428 ql_dbg(ql_dbg_tgt, vha, 0xe040, 429 "qla_target(%d): Received unknown ATIO atio " 430 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 431 break; 432 } 433 434 return false; 435 } 436 437 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 438 struct rsp_que *rsp, response_t *pkt) 439 { 440 switch (pkt->entry_type) { 441 case CTIO_CRC2: 442 ql_dbg(ql_dbg_tgt, vha, 0xe073, 443 "qla_target(%d):%s: CRC2 Response pkt\n", 444 vha->vp_idx, __func__); 445 fallthrough; 446 case CTIO_TYPE7: 447 { 448 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 449 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 450 entry->vp_index); 451 if (unlikely(!host)) { 452 ql_dbg(ql_dbg_tgt, vha, 0xe041, 453 "qla_target(%d): Response pkt (CTIO_TYPE7) " 454 "received, with unknown vp_index %d\n", 455 vha->vp_idx, entry->vp_index); 456 break; 457 } 458 qlt_response_pkt(host, rsp, pkt); 459 break; 460 } 461 462 case IMMED_NOTIFY_TYPE: 463 { 464 struct scsi_qla_host *host; 465 struct imm_ntfy_from_isp *entry = 466 (struct imm_ntfy_from_isp *)pkt; 467 468 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 469 if (unlikely(!host)) { 470 ql_dbg(ql_dbg_tgt, vha, 0xe042, 471 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 472 "received, with unknown vp_index %d\n", 473 vha->vp_idx, entry->u.isp24.vp_index); 474 break; 475 } 476 qlt_response_pkt(host, rsp, pkt); 477 break; 478 } 479 480 case NOTIFY_ACK_TYPE: 481 { 482 struct scsi_qla_host *host = vha; 483 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 484 485 if (0xFF != entry->u.isp24.vp_index) { 486 host = qlt_find_host_by_vp_idx(vha, 487 entry->u.isp24.vp_index); 488 if (unlikely(!host)) { 489 ql_dbg(ql_dbg_tgt, vha, 0xe043, 490 "qla_target(%d): Response " 491 "pkt (NOTIFY_ACK_TYPE) " 492 "received, with unknown " 493 "vp_index %d\n", vha->vp_idx, 494 entry->u.isp24.vp_index); 495 break; 496 } 497 } 498 qlt_response_pkt(host, rsp, pkt); 499 break; 500 } 501 502 case ABTS_RECV_24XX: 503 { 504 struct abts_recv_from_24xx *entry = 505 (struct abts_recv_from_24xx *)pkt; 506 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 507 entry->vp_index); 508 if (unlikely(!host)) { 509 ql_dbg(ql_dbg_tgt, vha, 0xe044, 510 "qla_target(%d): Response pkt " 511 "(ABTS_RECV_24XX) received, with unknown " 512 "vp_index %d\n", vha->vp_idx, entry->vp_index); 513 break; 514 } 515 qlt_response_pkt(host, rsp, pkt); 516 break; 517 } 518 519 case ABTS_RESP_24XX: 520 { 521 struct abts_resp_to_24xx *entry = 522 (struct abts_resp_to_24xx *)pkt; 523 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 524 entry->vp_index); 525 if (unlikely(!host)) { 526 ql_dbg(ql_dbg_tgt, vha, 0xe045, 527 "qla_target(%d): Response pkt " 528 "(ABTS_RECV_24XX) received, with unknown " 529 "vp_index %d\n", vha->vp_idx, entry->vp_index); 530 break; 531 } 532 qlt_response_pkt(host, rsp, pkt); 533 break; 534 } 535 default: 536 qlt_response_pkt(vha, rsp, pkt); 537 break; 538 } 539 540 } 541 542 /* 543 * All qlt_plogi_ack_t operations are protected by hardware_lock 544 */ 545 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 546 struct imm_ntfy_from_isp *ntfy, int type) 547 { 548 struct qla_work_evt *e; 549 550 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 551 if (!e) 552 return QLA_FUNCTION_FAILED; 553 554 e->u.nack.fcport = fcport; 555 e->u.nack.type = type; 556 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 557 return qla2x00_post_work(vha, e); 558 } 559 560 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 561 { 562 struct scsi_qla_host *vha = sp->vha; 563 unsigned long flags; 564 565 ql_dbg(ql_dbg_disc, vha, 0x20f2, 566 "Async done-%s res %x %8phC type %d\n", 567 sp->name, res, sp->fcport->port_name, sp->type); 568 569 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 570 sp->fcport->flags &= ~FCF_ASYNC_SENT; 571 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 572 573 switch (sp->type) { 574 case SRB_NACK_PLOGI: 575 sp->fcport->login_gen++; 576 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 577 sp->fcport->logout_on_delete = 1; 578 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 579 sp->fcport->send_els_logo = 0; 580 break; 581 582 case SRB_NACK_PRLI: 583 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 584 sp->fcport->deleted = 0; 585 sp->fcport->send_els_logo = 0; 586 587 if (!sp->fcport->login_succ && 588 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 589 sp->fcport->login_succ = 1; 590 591 vha->fcport_count++; 592 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 593 qla24xx_sched_upd_fcport(sp->fcport); 594 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 595 } else { 596 sp->fcport->login_retry = 0; 597 qla2x00_set_fcport_disc_state(sp->fcport, 598 DSC_LOGIN_COMPLETE); 599 sp->fcport->deleted = 0; 600 sp->fcport->logout_on_delete = 1; 601 } 602 break; 603 604 case SRB_NACK_LOGO: 605 sp->fcport->login_gen++; 606 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 607 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 608 break; 609 } 610 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 611 612 sp->free(sp); 613 } 614 615 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 616 struct imm_ntfy_from_isp *ntfy, int type) 617 { 618 int rval = QLA_FUNCTION_FAILED; 619 srb_t *sp; 620 char *c = NULL; 621 622 fcport->flags |= FCF_ASYNC_SENT; 623 switch (type) { 624 case SRB_NACK_PLOGI: 625 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 626 c = "PLOGI"; 627 break; 628 case SRB_NACK_PRLI: 629 fcport->fw_login_state = DSC_LS_PRLI_PEND; 630 fcport->deleted = 0; 631 c = "PRLI"; 632 break; 633 case SRB_NACK_LOGO: 634 fcport->fw_login_state = DSC_LS_LOGO_PEND; 635 c = "LOGO"; 636 break; 637 } 638 639 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 640 if (!sp) 641 goto done; 642 643 sp->type = type; 644 sp->name = "nack"; 645 646 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 647 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 648 649 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 650 sp->done = qla2x00_async_nack_sp_done; 651 652 ql_dbg(ql_dbg_disc, vha, 0x20f4, 653 "Async-%s %8phC hndl %x %s\n", 654 sp->name, fcport->port_name, sp->handle, c); 655 656 rval = qla2x00_start_sp(sp); 657 if (rval != QLA_SUCCESS) 658 goto done_free_sp; 659 660 return rval; 661 662 done_free_sp: 663 sp->free(sp); 664 done: 665 fcport->flags &= ~FCF_ASYNC_SENT; 666 return rval; 667 } 668 669 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 670 { 671 fc_port_t *t; 672 673 switch (e->u.nack.type) { 674 case SRB_NACK_PRLI: 675 t = e->u.nack.fcport; 676 flush_work(&t->del_work); 677 flush_work(&t->free_work); 678 mutex_lock(&vha->vha_tgt.tgt_mutex); 679 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 680 mutex_unlock(&vha->vha_tgt.tgt_mutex); 681 if (t) { 682 ql_log(ql_log_info, vha, 0xd034, 683 "%s create sess success %p", __func__, t); 684 /* create sess has an extra kref */ 685 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 686 } 687 break; 688 } 689 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 690 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 691 } 692 693 void qla24xx_delete_sess_fn(struct work_struct *work) 694 { 695 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 696 struct qla_hw_data *ha = fcport->vha->hw; 697 698 if (fcport->se_sess) { 699 ha->tgt.tgt_ops->shutdown_sess(fcport); 700 ha->tgt.tgt_ops->put_sess(fcport); 701 } else { 702 qlt_unreg_sess(fcport); 703 } 704 } 705 706 /* 707 * Called from qla2x00_reg_remote_port() 708 */ 709 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 710 { 711 struct qla_hw_data *ha = vha->hw; 712 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 713 struct fc_port *sess = fcport; 714 unsigned long flags; 715 716 if (!vha->hw->tgt.tgt_ops) 717 return; 718 719 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 720 if (tgt->tgt_stop) { 721 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 722 return; 723 } 724 725 if (fcport->disc_state == DSC_DELETE_PEND) { 726 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 727 return; 728 } 729 730 if (!sess->se_sess) { 731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 732 733 mutex_lock(&vha->vha_tgt.tgt_mutex); 734 sess = qlt_create_sess(vha, fcport, false); 735 mutex_unlock(&vha->vha_tgt.tgt_mutex); 736 737 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 738 } else { 739 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 741 return; 742 } 743 744 if (!kref_get_unless_zero(&sess->sess_kref)) { 745 ql_dbg(ql_dbg_disc, vha, 0x2107, 746 "%s: kref_get fail sess %8phC \n", 747 __func__, sess->port_name); 748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 749 return; 750 } 751 752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 753 "qla_target(%u): %ssession for port %8phC " 754 "(loop ID %d) reappeared\n", vha->vp_idx, 755 sess->local ? "local " : "", sess->port_name, sess->loop_id); 756 757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 758 "Reappeared sess %p\n", sess); 759 760 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 761 fcport->loop_id, 762 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 763 } 764 765 if (sess && sess->local) { 766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 767 "qla_target(%u): local session for " 768 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 769 fcport->port_name, sess->loop_id); 770 sess->local = 0; 771 } 772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 773 774 ha->tgt.tgt_ops->put_sess(sess); 775 } 776 777 /* 778 * This is a zero-base ref-counting solution, since hardware_lock 779 * guarantees that ref_count is not modified concurrently. 780 * Upon successful return content of iocb is undefined 781 */ 782 static struct qlt_plogi_ack_t * 783 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 784 struct imm_ntfy_from_isp *iocb) 785 { 786 struct qlt_plogi_ack_t *pla; 787 788 lockdep_assert_held(&vha->hw->hardware_lock); 789 790 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 791 if (pla->id.b24 == id->b24) { 792 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 793 "%s %d %8phC Term INOT due to new INOT", 794 __func__, __LINE__, 795 pla->iocb.u.isp24.port_name); 796 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 798 return pla; 799 } 800 } 801 802 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 803 if (!pla) { 804 ql_dbg(ql_dbg_async, vha, 0x5088, 805 "qla_target(%d): Allocation of plogi_ack failed\n", 806 vha->vp_idx); 807 return NULL; 808 } 809 810 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 811 pla->id = *id; 812 list_add_tail(&pla->list, &vha->plogi_ack_list); 813 814 return pla; 815 } 816 817 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 818 struct qlt_plogi_ack_t *pla) 819 { 820 struct imm_ntfy_from_isp *iocb = &pla->iocb; 821 port_id_t port_id; 822 uint16_t loop_id; 823 fc_port_t *fcport = pla->fcport; 824 825 BUG_ON(!pla->ref_count); 826 pla->ref_count--; 827 828 if (pla->ref_count) 829 return; 830 831 ql_dbg(ql_dbg_disc, vha, 0x5089, 832 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 833 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 834 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 835 iocb->u.isp24.port_id[0], 836 le16_to_cpu(iocb->u.isp24.nport_handle), 837 iocb->u.isp24.exchange_address, iocb->ox_id); 838 839 port_id.b.domain = iocb->u.isp24.port_id[2]; 840 port_id.b.area = iocb->u.isp24.port_id[1]; 841 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 842 port_id.b.rsvd_1 = 0; 843 844 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 845 846 fcport->loop_id = loop_id; 847 fcport->d_id = port_id; 848 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 849 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 850 else 851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 852 853 list_for_each_entry(fcport, &vha->vp_fcports, list) { 854 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 855 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 856 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 857 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 858 } 859 860 list_del(&pla->list); 861 kmem_cache_free(qla_tgt_plogi_cachep, pla); 862 } 863 864 void 865 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 866 struct fc_port *sess, enum qlt_plogi_link_t link) 867 { 868 struct imm_ntfy_from_isp *iocb = &pla->iocb; 869 /* Inc ref_count first because link might already be pointing at pla */ 870 pla->ref_count++; 871 872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 873 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 874 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 875 sess, link, sess->port_name, 876 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 878 pla->ref_count, pla, link); 879 880 if (link == QLT_PLOGI_LINK_CONFLICT) { 881 switch (sess->disc_state) { 882 case DSC_DELETED: 883 case DSC_DELETE_PEND: 884 pla->ref_count--; 885 return; 886 default: 887 break; 888 } 889 } 890 891 if (sess->plogi_link[link]) 892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 893 894 if (link == QLT_PLOGI_LINK_SAME_WWN) 895 pla->fcport = sess; 896 897 sess->plogi_link[link] = pla; 898 } 899 900 typedef struct { 901 /* These fields must be initialized by the caller */ 902 port_id_t id; 903 /* 904 * number of cmds dropped while we were waiting for 905 * initiator to ack LOGO initialize to 1 if LOGO is 906 * triggered by a command, otherwise, to 0 907 */ 908 int cmd_count; 909 910 /* These fields are used by callee */ 911 struct list_head list; 912 } qlt_port_logo_t; 913 914 static void 915 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 916 { 917 qlt_port_logo_t *tmp; 918 int res; 919 920 mutex_lock(&vha->vha_tgt.tgt_mutex); 921 922 list_for_each_entry(tmp, &vha->logo_list, list) { 923 if (tmp->id.b24 == logo->id.b24) { 924 tmp->cmd_count += logo->cmd_count; 925 mutex_unlock(&vha->vha_tgt.tgt_mutex); 926 return; 927 } 928 } 929 930 list_add_tail(&logo->list, &vha->logo_list); 931 932 mutex_unlock(&vha->vha_tgt.tgt_mutex); 933 934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 935 936 mutex_lock(&vha->vha_tgt.tgt_mutex); 937 list_del(&logo->list); 938 mutex_unlock(&vha->vha_tgt.tgt_mutex); 939 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 943 logo->cmd_count, res); 944 } 945 946 void qlt_free_session_done(struct work_struct *work) 947 { 948 struct fc_port *sess = container_of(work, struct fc_port, 949 free_work); 950 struct qla_tgt *tgt = sess->tgt; 951 struct scsi_qla_host *vha = sess->vha; 952 struct qla_hw_data *ha = vha->hw; 953 unsigned long flags; 954 bool logout_started = false; 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 956 struct qlt_plogi_ack_t *own = 957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 958 959 ql_dbg(ql_dbg_disc, vha, 0xf084, 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 964 sess->logout_on_delete, sess->keep_nport_handle, 965 sess->send_els_logo); 966 967 if (!IS_SW_RESV_ADDR(sess->d_id)) { 968 qla2x00_mark_device_lost(vha, sess, 0); 969 970 if (sess->send_els_logo) { 971 qlt_port_logo_t logo; 972 973 logo.id = sess->d_id; 974 logo.cmd_count = 0; 975 if (!own) 976 qlt_send_first_logo(vha, &logo); 977 sess->send_els_logo = 0; 978 } 979 980 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 981 int rc; 982 983 if (!own || 984 (own && 985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 986 rc = qla2x00_post_async_logout_work(vha, sess, 987 NULL); 988 if (rc != QLA_SUCCESS) 989 ql_log(ql_log_warn, vha, 0xf085, 990 "Schedule logo failed sess %p rc %d\n", 991 sess, rc); 992 else 993 logout_started = true; 994 } else if (own && (own->iocb.u.isp24.status_subcode == 995 ELS_PRLI) && ha->flags.rida_fmt2) { 996 rc = qla2x00_post_async_prlo_work(vha, sess, 997 NULL); 998 if (rc != QLA_SUCCESS) 999 ql_log(ql_log_warn, vha, 0xf085, 1000 "Schedule PRLO failed sess %p rc %d\n", 1001 sess, rc); 1002 else 1003 logout_started = true; 1004 } 1005 } /* if sess->logout_on_delete */ 1006 1007 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1008 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1009 sess->nvme_flag |= NVME_FLAG_DELETING; 1010 qla_nvme_unregister_remote_port(sess); 1011 } 1012 } 1013 1014 /* 1015 * Release the target session for FC Nexus from fabric module code. 1016 */ 1017 if (sess->se_sess != NULL) 1018 ha->tgt.tgt_ops->free_session(sess); 1019 1020 if (logout_started) { 1021 bool traced = false; 1022 u16 cnt = 0; 1023 1024 while (!READ_ONCE(sess->logout_completed)) { 1025 if (!traced) { 1026 ql_dbg(ql_dbg_disc, vha, 0xf086, 1027 "%s: waiting for sess %p logout\n", 1028 __func__, sess); 1029 traced = true; 1030 } 1031 msleep(100); 1032 cnt++; 1033 if (cnt > 200) 1034 break; 1035 } 1036 1037 ql_dbg(ql_dbg_disc, vha, 0xf087, 1038 "%s: sess %p logout completed\n", __func__, sess); 1039 } 1040 1041 if (sess->logo_ack_needed) { 1042 sess->logo_ack_needed = 0; 1043 qla24xx_async_notify_ack(vha, sess, 1044 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1045 } 1046 1047 spin_lock_irqsave(&vha->work_lock, flags); 1048 sess->flags &= ~FCF_ASYNC_SENT; 1049 spin_unlock_irqrestore(&vha->work_lock, flags); 1050 1051 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1052 if (sess->se_sess) { 1053 sess->se_sess = NULL; 1054 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1055 tgt->sess_count--; 1056 } 1057 1058 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1059 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1060 sess->deleted = QLA_SESS_DELETED; 1061 1062 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1063 vha->fcport_count--; 1064 sess->login_succ = 0; 1065 } 1066 1067 qla2x00_clear_loop_id(sess); 1068 1069 if (sess->conflict) { 1070 sess->conflict->login_pause = 0; 1071 sess->conflict = NULL; 1072 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1073 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1074 } 1075 1076 { 1077 struct qlt_plogi_ack_t *con = 1078 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1079 struct imm_ntfy_from_isp *iocb; 1080 1081 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1082 1083 if (con) { 1084 iocb = &con->iocb; 1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1086 "se_sess %p / sess %p port %8phC is gone," 1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1088 sess->se_sess, sess, sess->port_name, 1089 own ? "releasing own PLOGI" : "no own PLOGI pending", 1090 own ? own->ref_count : -1, 1091 iocb->u.isp24.port_name, con->ref_count); 1092 qlt_plogi_ack_unref(vha, con); 1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1094 } else { 1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1097 sess->se_sess, sess, sess->port_name, 1098 own ? "releasing own PLOGI" : 1099 "no own PLOGI pending", 1100 own ? own->ref_count : -1); 1101 } 1102 1103 if (own) { 1104 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1105 qlt_plogi_ack_unref(vha, own); 1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1107 } 1108 } 1109 1110 sess->explicit_logout = 0; 1111 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1112 sess->free_pending = 0; 1113 1114 ql_dbg(ql_dbg_disc, vha, 0xf001, 1115 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1116 sess, sess->port_name, vha->fcport_count); 1117 1118 if (tgt && (tgt->sess_count == 0)) 1119 wake_up_all(&tgt->waitQ); 1120 1121 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1122 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1123 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1124 switch (vha->host->active_mode) { 1125 case MODE_INITIATOR: 1126 case MODE_DUAL: 1127 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1128 qla2xxx_wake_dpc(vha); 1129 break; 1130 case MODE_TARGET: 1131 default: 1132 /* no-op */ 1133 break; 1134 } 1135 } 1136 1137 if (vha->fcport_count == 0) 1138 wake_up_all(&vha->fcport_waitQ); 1139 } 1140 1141 /* ha->tgt.sess_lock supposed to be held on entry */ 1142 void qlt_unreg_sess(struct fc_port *sess) 1143 { 1144 struct scsi_qla_host *vha = sess->vha; 1145 unsigned long flags; 1146 1147 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1148 "%s sess %p for deletion %8phC\n", 1149 __func__, sess, sess->port_name); 1150 1151 spin_lock_irqsave(&sess->vha->work_lock, flags); 1152 if (sess->free_pending) { 1153 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1154 return; 1155 } 1156 sess->free_pending = 1; 1157 /* 1158 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1159 * management from being sent. 1160 */ 1161 sess->flags |= FCF_ASYNC_SENT; 1162 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1163 1164 if (sess->se_sess) 1165 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1166 1167 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1168 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1169 sess->last_rscn_gen = sess->rscn_gen; 1170 sess->last_login_gen = sess->login_gen; 1171 1172 queue_work(sess->vha->hw->wq, &sess->free_work); 1173 } 1174 EXPORT_SYMBOL(qlt_unreg_sess); 1175 1176 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1177 { 1178 struct qla_hw_data *ha = vha->hw; 1179 struct fc_port *sess = NULL; 1180 uint16_t loop_id; 1181 int res = 0; 1182 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1183 unsigned long flags; 1184 1185 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1186 if (loop_id == 0xFFFF) { 1187 /* Global event */ 1188 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1189 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1190 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1191 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1192 } else { 1193 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1194 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1195 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1196 } 1197 1198 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1199 "Using sess for qla_tgt_reset: %p\n", sess); 1200 if (!sess) { 1201 res = -ESRCH; 1202 return res; 1203 } 1204 1205 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1206 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1207 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1208 mcmd, loop_id); 1209 1210 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1211 } 1212 1213 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1214 { 1215 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1216 sess->logout_on_delete = 0; 1217 sess->logo_ack_needed = 0; 1218 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1219 } 1220 } 1221 1222 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1223 { 1224 struct qla_tgt *tgt = sess->tgt; 1225 unsigned long flags; 1226 u16 sec; 1227 1228 switch (sess->disc_state) { 1229 case DSC_DELETE_PEND: 1230 return; 1231 case DSC_DELETED: 1232 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1233 wake_up_all(&tgt->waitQ); 1234 if (sess->vha->fcport_count == 0) 1235 wake_up_all(&sess->vha->fcport_waitQ); 1236 1237 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1238 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1239 return; 1240 break; 1241 case DSC_UPD_FCPORT: 1242 /* 1243 * This port is not done reporting to upper layer. 1244 * let it finish 1245 */ 1246 sess->next_disc_state = DSC_DELETE_PEND; 1247 sec = jiffies_to_msecs(jiffies - 1248 sess->jiffies_at_registration)/1000; 1249 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1250 sess->sec_since_registration = sec; 1251 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1252 "%s %8phC : Slow Rport registration(%d Sec)\n", 1253 __func__, sess->port_name, sec); 1254 } 1255 return; 1256 default: 1257 break; 1258 } 1259 1260 spin_lock_irqsave(&sess->vha->work_lock, flags); 1261 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1262 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1263 return; 1264 } 1265 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1266 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1267 1268 sess->prli_pend_timer = 0; 1269 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1270 1271 qla24xx_chk_fcp_state(sess); 1272 1273 ql_dbg(ql_dbg_disc, sess->vha, 0xe001, 1274 "Scheduling sess %p for deletion %8phC\n", 1275 sess, sess->port_name); 1276 1277 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1278 } 1279 1280 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1281 { 1282 struct fc_port *sess; 1283 scsi_qla_host_t *vha = tgt->vha; 1284 1285 list_for_each_entry(sess, &vha->vp_fcports, list) { 1286 if (sess->se_sess) 1287 qlt_schedule_sess_for_deletion(sess); 1288 } 1289 1290 /* At this point tgt could be already dead */ 1291 } 1292 1293 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1294 uint16_t *loop_id) 1295 { 1296 struct qla_hw_data *ha = vha->hw; 1297 dma_addr_t gid_list_dma; 1298 struct gid_list_info *gid_list, *gid; 1299 int res, rc, i; 1300 uint16_t entries; 1301 1302 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1303 &gid_list_dma, GFP_KERNEL); 1304 if (!gid_list) { 1305 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1306 "qla_target(%d): DMA Alloc failed of %u\n", 1307 vha->vp_idx, qla2x00_gid_list_size(ha)); 1308 return -ENOMEM; 1309 } 1310 1311 /* Get list of logged in devices */ 1312 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1313 if (rc != QLA_SUCCESS) { 1314 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1315 "qla_target(%d): get_id_list() failed: %x\n", 1316 vha->vp_idx, rc); 1317 res = -EBUSY; 1318 goto out_free_id_list; 1319 } 1320 1321 gid = gid_list; 1322 res = -ENOENT; 1323 for (i = 0; i < entries; i++) { 1324 if (gid->al_pa == s_id.al_pa && 1325 gid->area == s_id.area && 1326 gid->domain == s_id.domain) { 1327 *loop_id = le16_to_cpu(gid->loop_id); 1328 res = 0; 1329 break; 1330 } 1331 gid = (void *)gid + ha->gid_list_info_size; 1332 } 1333 1334 out_free_id_list: 1335 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1336 gid_list, gid_list_dma); 1337 return res; 1338 } 1339 1340 /* 1341 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1342 * Caller must put it. 1343 */ 1344 static struct fc_port *qlt_create_sess( 1345 struct scsi_qla_host *vha, 1346 fc_port_t *fcport, 1347 bool local) 1348 { 1349 struct qla_hw_data *ha = vha->hw; 1350 struct fc_port *sess = fcport; 1351 unsigned long flags; 1352 1353 if (vha->vha_tgt.qla_tgt->tgt_stop) 1354 return NULL; 1355 1356 if (fcport->se_sess) { 1357 if (!kref_get_unless_zero(&sess->sess_kref)) { 1358 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1359 "%s: kref_get_unless_zero failed for %8phC\n", 1360 __func__, sess->port_name); 1361 return NULL; 1362 } 1363 return fcport; 1364 } 1365 sess->tgt = vha->vha_tgt.qla_tgt; 1366 sess->local = local; 1367 1368 /* 1369 * Under normal circumstances we want to logout from firmware when 1370 * session eventually ends and release corresponding nport handle. 1371 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1372 * code will adjust these flags as necessary. 1373 */ 1374 sess->logout_on_delete = 1; 1375 sess->keep_nport_handle = 0; 1376 sess->logout_completed = 0; 1377 1378 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1379 &fcport->port_name[0], sess) < 0) { 1380 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1381 "(%d) %8phC check_initiator_node_acl failed\n", 1382 vha->vp_idx, fcport->port_name); 1383 return NULL; 1384 } else { 1385 kref_init(&fcport->sess_kref); 1386 /* 1387 * Take an extra reference to ->sess_kref here to handle 1388 * fc_port access across ->tgt.sess_lock reaquire. 1389 */ 1390 if (!kref_get_unless_zero(&sess->sess_kref)) { 1391 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1392 "%s: kref_get_unless_zero failed for %8phC\n", 1393 __func__, sess->port_name); 1394 return NULL; 1395 } 1396 1397 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1398 if (!IS_SW_RESV_ADDR(sess->d_id)) 1399 vha->vha_tgt.qla_tgt->sess_count++; 1400 1401 qlt_do_generation_tick(vha, &sess->generation); 1402 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1403 } 1404 1405 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1406 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1407 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1408 vha->vha_tgt.qla_tgt->sess_count); 1409 1410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1411 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1412 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1413 vha->vp_idx, local ? "local " : "", fcport->port_name, 1414 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1415 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1416 1417 return sess; 1418 } 1419 1420 /* 1421 * max_gen - specifies maximum session generation 1422 * at which this deletion requestion is still valid 1423 */ 1424 void 1425 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1426 { 1427 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1428 struct fc_port *sess = fcport; 1429 unsigned long flags; 1430 1431 if (!vha->hw->tgt.tgt_ops) 1432 return; 1433 1434 if (!tgt) 1435 return; 1436 1437 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1438 if (tgt->tgt_stop) { 1439 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1440 return; 1441 } 1442 if (!sess->se_sess) { 1443 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1444 return; 1445 } 1446 1447 if (max_gen - sess->generation < 0) { 1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1450 "Ignoring stale deletion request for se_sess %p / sess %p" 1451 " for port %8phC, req_gen %d, sess_gen %d\n", 1452 sess->se_sess, sess, sess->port_name, max_gen, 1453 sess->generation); 1454 return; 1455 } 1456 1457 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1458 1459 sess->local = 1; 1460 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1461 qlt_schedule_sess_for_deletion(sess); 1462 } 1463 1464 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1465 { 1466 struct qla_hw_data *ha = tgt->ha; 1467 unsigned long flags; 1468 int res; 1469 /* 1470 * We need to protect against race, when tgt is freed before or 1471 * inside wake_up() 1472 */ 1473 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1474 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1475 "tgt %p, sess_count=%d\n", 1476 tgt, tgt->sess_count); 1477 res = (tgt->sess_count == 0); 1478 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1479 1480 return res; 1481 } 1482 1483 /* Called by tcm_qla2xxx configfs code */ 1484 int qlt_stop_phase1(struct qla_tgt *tgt) 1485 { 1486 struct scsi_qla_host *vha = tgt->vha; 1487 struct qla_hw_data *ha = tgt->ha; 1488 unsigned long flags; 1489 1490 mutex_lock(&ha->optrom_mutex); 1491 mutex_lock(&qla_tgt_mutex); 1492 1493 if (tgt->tgt_stop || tgt->tgt_stopped) { 1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1495 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1496 mutex_unlock(&qla_tgt_mutex); 1497 mutex_unlock(&ha->optrom_mutex); 1498 return -EPERM; 1499 } 1500 1501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1502 vha->host_no, vha); 1503 /* 1504 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1505 * Lock is needed, because we still can get an incoming packet. 1506 */ 1507 mutex_lock(&vha->vha_tgt.tgt_mutex); 1508 tgt->tgt_stop = 1; 1509 qlt_clear_tgt_db(tgt); 1510 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1511 mutex_unlock(&qla_tgt_mutex); 1512 1513 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1514 "Waiting for sess works (tgt %p)", tgt); 1515 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1516 while (!list_empty(&tgt->sess_works_list)) { 1517 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1518 flush_scheduled_work(); 1519 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1520 } 1521 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1522 1523 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1524 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1525 1526 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1527 1528 /* Big hammer */ 1529 if (!ha->flags.host_shutting_down && 1530 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1531 qlt_disable_vha(vha); 1532 1533 /* Wait for sessions to clear out (just in case) */ 1534 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1535 mutex_unlock(&ha->optrom_mutex); 1536 1537 return 0; 1538 } 1539 EXPORT_SYMBOL(qlt_stop_phase1); 1540 1541 /* Called by tcm_qla2xxx configfs code */ 1542 void qlt_stop_phase2(struct qla_tgt *tgt) 1543 { 1544 scsi_qla_host_t *vha = tgt->vha; 1545 1546 if (tgt->tgt_stopped) { 1547 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1548 "Already in tgt->tgt_stopped state\n"); 1549 dump_stack(); 1550 return; 1551 } 1552 if (!tgt->tgt_stop) { 1553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1554 "%s: phase1 stop is not completed\n", __func__); 1555 dump_stack(); 1556 return; 1557 } 1558 1559 mutex_lock(&vha->vha_tgt.tgt_mutex); 1560 tgt->tgt_stop = 0; 1561 tgt->tgt_stopped = 1; 1562 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1563 1564 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1565 tgt); 1566 1567 switch (vha->qlini_mode) { 1568 case QLA2XXX_INI_MODE_EXCLUSIVE: 1569 vha->flags.online = 1; 1570 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1571 break; 1572 default: 1573 break; 1574 } 1575 } 1576 EXPORT_SYMBOL(qlt_stop_phase2); 1577 1578 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1579 static void qlt_release(struct qla_tgt *tgt) 1580 { 1581 scsi_qla_host_t *vha = tgt->vha; 1582 void *node; 1583 u64 key = 0; 1584 u16 i; 1585 struct qla_qpair_hint *h; 1586 struct qla_hw_data *ha = vha->hw; 1587 1588 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1589 qlt_stop_phase1(tgt); 1590 1591 if (!tgt->tgt_stopped) 1592 qlt_stop_phase2(tgt); 1593 1594 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1595 unsigned long flags; 1596 1597 h = &tgt->qphints[i]; 1598 if (h->qpair) { 1599 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1600 list_del(&h->hint_elem); 1601 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1602 h->qpair = NULL; 1603 } 1604 } 1605 kfree(tgt->qphints); 1606 mutex_lock(&qla_tgt_mutex); 1607 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1608 mutex_unlock(&qla_tgt_mutex); 1609 1610 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1611 btree_remove64(&tgt->lun_qpair_map, key); 1612 1613 btree_destroy64(&tgt->lun_qpair_map); 1614 1615 if (vha->vp_idx) 1616 if (ha->tgt.tgt_ops && 1617 ha->tgt.tgt_ops->remove_target && 1618 vha->vha_tgt.target_lport_ptr) 1619 ha->tgt.tgt_ops->remove_target(vha); 1620 1621 vha->vha_tgt.qla_tgt = NULL; 1622 1623 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1624 "Release of tgt %p finished\n", tgt); 1625 1626 kfree(tgt); 1627 } 1628 1629 /* ha->hardware_lock supposed to be held on entry */ 1630 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1631 const void *param, unsigned int param_size) 1632 { 1633 struct qla_tgt_sess_work_param *prm; 1634 unsigned long flags; 1635 1636 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1637 if (!prm) { 1638 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1639 "qla_target(%d): Unable to create session " 1640 "work, command will be refused", 0); 1641 return -ENOMEM; 1642 } 1643 1644 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1645 "Scheduling work (type %d, prm %p)" 1646 " to find session for param %p (size %d, tgt %p)\n", 1647 type, prm, param, param_size, tgt); 1648 1649 prm->type = type; 1650 memcpy(&prm->tm_iocb, param, param_size); 1651 1652 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1653 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1654 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1655 1656 schedule_work(&tgt->sess_work); 1657 1658 return 0; 1659 } 1660 1661 /* 1662 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1663 */ 1664 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1665 struct imm_ntfy_from_isp *ntfy, 1666 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1667 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1668 { 1669 struct scsi_qla_host *vha = qpair->vha; 1670 struct qla_hw_data *ha = vha->hw; 1671 request_t *pkt; 1672 struct nack_to_isp *nack; 1673 1674 if (!ha->flags.fw_started) 1675 return; 1676 1677 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1678 1679 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1680 if (!pkt) { 1681 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1682 "qla_target(%d): %s failed: unable to allocate " 1683 "request packet\n", vha->vp_idx, __func__); 1684 return; 1685 } 1686 1687 if (vha->vha_tgt.qla_tgt != NULL) 1688 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1689 1690 pkt->entry_type = NOTIFY_ACK_TYPE; 1691 pkt->entry_count = 1; 1692 1693 nack = (struct nack_to_isp *)pkt; 1694 nack->ox_id = ntfy->ox_id; 1695 1696 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1697 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1698 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1699 nack->u.isp24.flags = ntfy->u.isp24.flags & 1700 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1701 } 1702 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1703 nack->u.isp24.status = ntfy->u.isp24.status; 1704 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1705 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1706 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1707 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1708 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1709 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1710 nack->u.isp24.srr_reject_code = srr_reject_code; 1711 nack->u.isp24.srr_reject_code_expl = srr_explan; 1712 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1713 1714 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1715 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1716 vha->vp_idx, nack->u.isp24.status); 1717 1718 /* Memory Barrier */ 1719 wmb(); 1720 qla2x00_start_iocbs(vha, qpair->req); 1721 } 1722 1723 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1724 { 1725 struct scsi_qla_host *vha = mcmd->vha; 1726 struct qla_hw_data *ha = vha->hw; 1727 struct abts_resp_to_24xx *resp; 1728 __le32 f_ctl; 1729 uint32_t h; 1730 uint8_t *p; 1731 int rc; 1732 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1733 struct qla_qpair *qpair = mcmd->qpair; 1734 1735 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1736 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1737 ha, mcmd->fc_tm_rsp); 1738 1739 rc = qlt_check_reserve_free_req(qpair, 1); 1740 if (rc) { 1741 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1742 "qla_target(%d): %s failed: unable to allocate request packet\n", 1743 vha->vp_idx, __func__); 1744 return -EAGAIN; 1745 } 1746 1747 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1748 memset(resp, 0, sizeof(*resp)); 1749 1750 h = qlt_make_handle(qpair); 1751 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1752 /* 1753 * CTIO type 7 from the firmware doesn't provide a way to 1754 * know the initiator's LOOP ID, hence we can't find 1755 * the session and, so, the command. 1756 */ 1757 return -EAGAIN; 1758 } else { 1759 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1760 } 1761 1762 resp->handle = make_handle(qpair->req->id, h); 1763 resp->entry_type = ABTS_RESP_24XX; 1764 resp->entry_count = 1; 1765 resp->nport_handle = abts->nport_handle; 1766 resp->vp_index = vha->vp_idx; 1767 resp->sof_type = abts->sof_type; 1768 resp->exchange_address = abts->exchange_address; 1769 resp->fcp_hdr_le = abts->fcp_hdr_le; 1770 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1771 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1772 F_CTL_SEQ_INITIATIVE); 1773 p = (uint8_t *)&f_ctl; 1774 resp->fcp_hdr_le.f_ctl[0] = *p++; 1775 resp->fcp_hdr_le.f_ctl[1] = *p++; 1776 resp->fcp_hdr_le.f_ctl[2] = *p; 1777 1778 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1779 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1780 1781 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1782 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1783 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1784 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1785 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1786 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1787 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1788 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1789 } else { 1790 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1791 resp->payload.ba_rjt.reason_code = 1792 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1793 /* Other bytes are zero */ 1794 } 1795 1796 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1797 1798 /* Memory Barrier */ 1799 wmb(); 1800 if (qpair->reqq_start_iocbs) 1801 qpair->reqq_start_iocbs(qpair); 1802 else 1803 qla2x00_start_iocbs(vha, qpair->req); 1804 1805 return rc; 1806 } 1807 1808 /* 1809 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1810 */ 1811 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1812 struct abts_recv_from_24xx *abts, uint32_t status, 1813 bool ids_reversed) 1814 { 1815 struct scsi_qla_host *vha = qpair->vha; 1816 struct qla_hw_data *ha = vha->hw; 1817 struct abts_resp_to_24xx *resp; 1818 __le32 f_ctl; 1819 uint8_t *p; 1820 1821 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1822 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1823 ha, abts, status); 1824 1825 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1826 NULL); 1827 if (!resp) { 1828 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1829 "qla_target(%d): %s failed: unable to allocate " 1830 "request packet", vha->vp_idx, __func__); 1831 return; 1832 } 1833 1834 resp->entry_type = ABTS_RESP_24XX; 1835 resp->handle = QLA_TGT_SKIP_HANDLE; 1836 resp->entry_count = 1; 1837 resp->nport_handle = abts->nport_handle; 1838 resp->vp_index = vha->vp_idx; 1839 resp->sof_type = abts->sof_type; 1840 resp->exchange_address = abts->exchange_address; 1841 resp->fcp_hdr_le = abts->fcp_hdr_le; 1842 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1843 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1844 F_CTL_SEQ_INITIATIVE); 1845 p = (uint8_t *)&f_ctl; 1846 resp->fcp_hdr_le.f_ctl[0] = *p++; 1847 resp->fcp_hdr_le.f_ctl[1] = *p++; 1848 resp->fcp_hdr_le.f_ctl[2] = *p; 1849 if (ids_reversed) { 1850 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1851 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1852 } else { 1853 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1854 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1855 } 1856 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1857 if (status == FCP_TMF_CMPL) { 1858 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1859 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1860 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1861 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1862 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1863 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1864 } else { 1865 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1866 resp->payload.ba_rjt.reason_code = 1867 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1868 /* Other bytes are zero */ 1869 } 1870 1871 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1872 1873 /* Memory Barrier */ 1874 wmb(); 1875 if (qpair->reqq_start_iocbs) 1876 qpair->reqq_start_iocbs(qpair); 1877 else 1878 qla2x00_start_iocbs(vha, qpair->req); 1879 } 1880 1881 /* 1882 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1883 */ 1884 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1885 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1886 { 1887 struct ctio7_to_24xx *ctio; 1888 u16 tmp; 1889 struct abts_recv_from_24xx *entry; 1890 1891 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1892 if (ctio == NULL) { 1893 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1894 "qla_target(%d): %s failed: unable to allocate " 1895 "request packet\n", vha->vp_idx, __func__); 1896 return; 1897 } 1898 1899 if (mcmd) 1900 /* abts from remote port */ 1901 entry = &mcmd->orig_iocb.abts; 1902 else 1903 /* abts from this driver. */ 1904 entry = (struct abts_recv_from_24xx *)pkt; 1905 1906 /* 1907 * We've got on entrance firmware's response on by us generated 1908 * ABTS response. So, in it ID fields are reversed. 1909 */ 1910 1911 ctio->entry_type = CTIO_TYPE7; 1912 ctio->entry_count = 1; 1913 ctio->nport_handle = entry->nport_handle; 1914 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1915 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1916 ctio->vp_index = vha->vp_idx; 1917 ctio->exchange_addr = entry->exchange_addr_to_abort; 1918 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1919 1920 if (mcmd) { 1921 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1922 1923 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1924 tmp |= (mcmd->abort_io_attr << 9); 1925 else if (qpair->retry_term_cnt & 1) 1926 tmp |= (0x4 << 9); 1927 } else { 1928 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1929 1930 if (qpair->retry_term_cnt & 1) 1931 tmp |= (0x4 << 9); 1932 } 1933 ctio->u.status1.flags = cpu_to_le16(tmp); 1934 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1935 1936 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1937 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1938 le16_to_cpu(ctio->u.status1.flags), 1939 le16_to_cpu(ctio->u.status1.ox_id), 1940 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1941 1942 /* Memory Barrier */ 1943 wmb(); 1944 if (qpair->reqq_start_iocbs) 1945 qpair->reqq_start_iocbs(qpair); 1946 else 1947 qla2x00_start_iocbs(vha, qpair->req); 1948 1949 if (mcmd) 1950 qlt_build_abts_resp_iocb(mcmd); 1951 else 1952 qlt_24xx_send_abts_resp(qpair, 1953 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1954 1955 } 1956 1957 /* drop cmds for the given lun 1958 * XXX only looks for cmds on the port through which lun reset was recieved 1959 * XXX does not go through the list of other port (which may have cmds 1960 * for the same lun) 1961 */ 1962 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1963 { 1964 struct qla_tgt_sess_op *op; 1965 struct qla_tgt_cmd *cmd; 1966 uint32_t key; 1967 unsigned long flags; 1968 1969 key = sid_to_key(s_id); 1970 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1971 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1972 uint32_t op_key; 1973 u64 op_lun; 1974 1975 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1976 op_lun = scsilun_to_int( 1977 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1978 if (op_key == key && op_lun == lun) 1979 op->aborted = true; 1980 } 1981 1982 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1983 uint32_t op_key; 1984 u64 op_lun; 1985 1986 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1987 op_lun = scsilun_to_int( 1988 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1989 if (op_key == key && op_lun == lun) 1990 op->aborted = true; 1991 } 1992 1993 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1994 uint32_t cmd_key; 1995 u64 cmd_lun; 1996 1997 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1998 cmd_lun = scsilun_to_int( 1999 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2000 if (cmd_key == key && cmd_lun == lun) 2001 cmd->aborted = 1; 2002 } 2003 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2004 } 2005 2006 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2007 uint64_t unpacked_lun) 2008 { 2009 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2010 struct qla_qpair_hint *h = NULL; 2011 2012 if (vha->flags.qpairs_available) { 2013 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2014 if (!h) 2015 h = &tgt->qphints[0]; 2016 } else { 2017 h = &tgt->qphints[0]; 2018 } 2019 2020 return h; 2021 } 2022 2023 static void qlt_do_tmr_work(struct work_struct *work) 2024 { 2025 struct qla_tgt_mgmt_cmd *mcmd = 2026 container_of(work, struct qla_tgt_mgmt_cmd, work); 2027 struct qla_hw_data *ha = mcmd->vha->hw; 2028 int rc = EIO; 2029 uint32_t tag; 2030 unsigned long flags; 2031 2032 switch (mcmd->tmr_func) { 2033 case QLA_TGT_ABTS: 2034 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2035 break; 2036 default: 2037 tag = 0; 2038 break; 2039 } 2040 2041 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2042 mcmd->tmr_func, tag); 2043 2044 if (rc != 0) { 2045 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2046 switch (mcmd->tmr_func) { 2047 case QLA_TGT_ABTS: 2048 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2049 qlt_build_abts_resp_iocb(mcmd); 2050 break; 2051 case QLA_TGT_LUN_RESET: 2052 case QLA_TGT_CLEAR_TS: 2053 case QLA_TGT_ABORT_TS: 2054 case QLA_TGT_CLEAR_ACA: 2055 case QLA_TGT_TARGET_RESET: 2056 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2057 qla_sam_status); 2058 break; 2059 2060 case QLA_TGT_ABORT_ALL: 2061 case QLA_TGT_NEXUS_LOSS_SESS: 2062 case QLA_TGT_NEXUS_LOSS: 2063 qlt_send_notify_ack(mcmd->qpair, 2064 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2065 break; 2066 } 2067 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2068 2069 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2070 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2071 mcmd->vha->vp_idx, rc); 2072 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2073 } 2074 } 2075 2076 /* ha->hardware_lock supposed to be held on entry */ 2077 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2078 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2079 { 2080 struct qla_hw_data *ha = vha->hw; 2081 struct qla_tgt_mgmt_cmd *mcmd; 2082 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2083 2084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2085 "qla_target(%d): task abort (tag=%d)\n", 2086 vha->vp_idx, abts->exchange_addr_to_abort); 2087 2088 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2089 if (mcmd == NULL) { 2090 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2091 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2092 vha->vp_idx, __func__); 2093 return -ENOMEM; 2094 } 2095 memset(mcmd, 0, sizeof(*mcmd)); 2096 mcmd->cmd_type = TYPE_TGT_TMCMD; 2097 mcmd->sess = sess; 2098 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2099 mcmd->reset_count = ha->base_qpair->chip_reset; 2100 mcmd->tmr_func = QLA_TGT_ABTS; 2101 mcmd->qpair = h->qpair; 2102 mcmd->vha = vha; 2103 2104 /* 2105 * LUN is looked up by target-core internally based on the passed 2106 * abts->exchange_addr_to_abort tag. 2107 */ 2108 mcmd->se_cmd.cpuid = h->cpuid; 2109 2110 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2111 struct qla_tgt_cmd *abort_cmd; 2112 2113 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2114 le32_to_cpu(abts->exchange_addr_to_abort)); 2115 if (abort_cmd && abort_cmd->qpair) { 2116 mcmd->qpair = abort_cmd->qpair; 2117 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2118 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2119 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2120 } 2121 } 2122 2123 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2124 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2125 2126 return 0; 2127 } 2128 2129 /* 2130 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2131 */ 2132 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2133 struct abts_recv_from_24xx *abts) 2134 { 2135 struct qla_hw_data *ha = vha->hw; 2136 struct fc_port *sess; 2137 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2138 be_id_t s_id; 2139 int rc; 2140 unsigned long flags; 2141 2142 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2144 "qla_target(%d): ABTS: Abort Sequence not " 2145 "supported\n", vha->vp_idx); 2146 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2147 false); 2148 return; 2149 } 2150 2151 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2153 "qla_target(%d): ABTS: Unknown Exchange " 2154 "Address received\n", vha->vp_idx); 2155 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2156 false); 2157 return; 2158 } 2159 2160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2161 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2162 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2163 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2164 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2165 2166 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2167 2168 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2169 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2170 if (!sess) { 2171 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2172 "qla_target(%d): task abort for non-existent session\n", 2173 vha->vp_idx); 2174 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2175 2176 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2177 false); 2178 return; 2179 } 2180 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2181 2182 2183 if (sess->deleted) { 2184 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2185 false); 2186 return; 2187 } 2188 2189 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2190 if (rc != 0) { 2191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2192 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2193 vha->vp_idx, rc); 2194 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2195 false); 2196 return; 2197 } 2198 } 2199 2200 /* 2201 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2202 */ 2203 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2204 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2205 { 2206 struct scsi_qla_host *ha = mcmd->vha; 2207 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2208 struct ctio7_to_24xx *ctio; 2209 uint16_t temp; 2210 2211 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2212 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2213 ha, atio, resp_code); 2214 2215 2216 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2217 if (ctio == NULL) { 2218 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2219 "qla_target(%d): %s failed: unable to allocate " 2220 "request packet\n", ha->vp_idx, __func__); 2221 return; 2222 } 2223 2224 ctio->entry_type = CTIO_TYPE7; 2225 ctio->entry_count = 1; 2226 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2227 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2228 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2229 ctio->vp_index = ha->vp_idx; 2230 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2231 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2232 temp = (atio->u.isp24.attr << 9)| 2233 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2234 ctio->u.status1.flags = cpu_to_le16(temp); 2235 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2236 ctio->u.status1.ox_id = cpu_to_le16(temp); 2237 ctio->u.status1.scsi_status = 2238 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2239 ctio->u.status1.response_len = cpu_to_le16(8); 2240 ctio->u.status1.sense_data[0] = resp_code; 2241 2242 /* Memory Barrier */ 2243 wmb(); 2244 if (qpair->reqq_start_iocbs) 2245 qpair->reqq_start_iocbs(qpair); 2246 else 2247 qla2x00_start_iocbs(ha, qpair->req); 2248 } 2249 2250 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2251 { 2252 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2253 } 2254 EXPORT_SYMBOL(qlt_free_mcmd); 2255 2256 /* 2257 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2258 * reacquire 2259 */ 2260 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2261 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2262 { 2263 struct atio_from_isp *atio = &cmd->atio; 2264 struct ctio7_to_24xx *ctio; 2265 uint16_t temp; 2266 struct scsi_qla_host *vha = cmd->vha; 2267 2268 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2269 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2270 "sense_key=%02x, asc=%02x, ascq=%02x", 2271 vha, atio, scsi_status, sense_key, asc, ascq); 2272 2273 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2274 if (!ctio) { 2275 ql_dbg(ql_dbg_async, vha, 0x3067, 2276 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2277 vha->host_no, __func__); 2278 goto out; 2279 } 2280 2281 ctio->entry_type = CTIO_TYPE7; 2282 ctio->entry_count = 1; 2283 ctio->handle = QLA_TGT_SKIP_HANDLE; 2284 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2285 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2286 ctio->vp_index = vha->vp_idx; 2287 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2288 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2289 temp = (atio->u.isp24.attr << 9) | 2290 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2291 ctio->u.status1.flags = cpu_to_le16(temp); 2292 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2293 ctio->u.status1.ox_id = cpu_to_le16(temp); 2294 ctio->u.status1.scsi_status = 2295 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2296 ctio->u.status1.response_len = cpu_to_le16(18); 2297 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2298 2299 if (ctio->u.status1.residual != 0) 2300 ctio->u.status1.scsi_status |= 2301 cpu_to_le16(SS_RESIDUAL_UNDER); 2302 2303 /* Fixed format sense data. */ 2304 ctio->u.status1.sense_data[0] = 0x70; 2305 ctio->u.status1.sense_data[2] = sense_key; 2306 /* Additional sense length */ 2307 ctio->u.status1.sense_data[7] = 0xa; 2308 /* ASC and ASCQ */ 2309 ctio->u.status1.sense_data[12] = asc; 2310 ctio->u.status1.sense_data[13] = ascq; 2311 2312 /* Memory Barrier */ 2313 wmb(); 2314 2315 if (qpair->reqq_start_iocbs) 2316 qpair->reqq_start_iocbs(qpair); 2317 else 2318 qla2x00_start_iocbs(vha, qpair->req); 2319 2320 out: 2321 return; 2322 } 2323 2324 /* callback from target fabric module code */ 2325 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2326 { 2327 struct scsi_qla_host *vha = mcmd->sess->vha; 2328 struct qla_hw_data *ha = vha->hw; 2329 unsigned long flags; 2330 struct qla_qpair *qpair = mcmd->qpair; 2331 bool free_mcmd = true; 2332 2333 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2334 "TM response mcmd (%p) status %#x state %#x", 2335 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2336 2337 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2338 2339 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2340 /* 2341 * Either the port is not online or this request was from 2342 * previous life, just abort the processing. 2343 */ 2344 ql_dbg(ql_dbg_async, vha, 0xe100, 2345 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2346 vha->flags.online, qla2x00_reset_active(vha), 2347 mcmd->reset_count, qpair->chip_reset); 2348 ha->tgt.tgt_ops->free_mcmd(mcmd); 2349 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2350 return; 2351 } 2352 2353 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2354 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2355 case ELS_LOGO: 2356 case ELS_PRLO: 2357 case ELS_TPRLO: 2358 ql_dbg(ql_dbg_disc, vha, 0x2106, 2359 "TM response logo %8phC status %#x state %#x", 2360 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2361 mcmd->flags); 2362 qlt_schedule_sess_for_deletion(mcmd->sess); 2363 break; 2364 default: 2365 qlt_send_notify_ack(vha->hw->base_qpair, 2366 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2367 break; 2368 } 2369 } else { 2370 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2371 qlt_build_abts_resp_iocb(mcmd); 2372 free_mcmd = false; 2373 } else 2374 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2375 mcmd->fc_tm_rsp); 2376 } 2377 /* 2378 * Make the callback for ->free_mcmd() to queue_work() and invoke 2379 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2380 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2381 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2382 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2383 * qlt_xmit_tm_rsp() returns here.. 2384 */ 2385 if (free_mcmd) 2386 ha->tgt.tgt_ops->free_mcmd(mcmd); 2387 2388 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2389 } 2390 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2391 2392 /* No locks */ 2393 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2394 { 2395 struct qla_tgt_cmd *cmd = prm->cmd; 2396 2397 BUG_ON(cmd->sg_cnt == 0); 2398 2399 prm->sg = (struct scatterlist *)cmd->sg; 2400 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2401 cmd->sg_cnt, cmd->dma_data_direction); 2402 if (unlikely(prm->seg_cnt == 0)) 2403 goto out_err; 2404 2405 prm->cmd->sg_mapped = 1; 2406 2407 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2408 /* 2409 * If greater than four sg entries then we need to allocate 2410 * the continuation entries 2411 */ 2412 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2413 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2414 QLA_TGT_DATASEGS_PER_CMD_24XX, 2415 QLA_TGT_DATASEGS_PER_CONT_24XX); 2416 } else { 2417 /* DIF */ 2418 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2419 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2420 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2421 prm->tot_dsds = prm->seg_cnt; 2422 } else 2423 prm->tot_dsds = prm->seg_cnt; 2424 2425 if (cmd->prot_sg_cnt) { 2426 prm->prot_sg = cmd->prot_sg; 2427 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2428 cmd->prot_sg, cmd->prot_sg_cnt, 2429 cmd->dma_data_direction); 2430 if (unlikely(prm->prot_seg_cnt == 0)) 2431 goto out_err; 2432 2433 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2434 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2435 /* Dif Bundling not support here */ 2436 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2437 cmd->blk_sz); 2438 prm->tot_dsds += prm->prot_seg_cnt; 2439 } else 2440 prm->tot_dsds += prm->prot_seg_cnt; 2441 } 2442 } 2443 2444 return 0; 2445 2446 out_err: 2447 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2448 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2449 0, prm->cmd->sg_cnt); 2450 return -1; 2451 } 2452 2453 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2454 { 2455 struct qla_hw_data *ha; 2456 struct qla_qpair *qpair; 2457 2458 if (!cmd->sg_mapped) 2459 return; 2460 2461 qpair = cmd->qpair; 2462 2463 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2464 cmd->dma_data_direction); 2465 cmd->sg_mapped = 0; 2466 2467 if (cmd->prot_sg_cnt) 2468 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2469 cmd->dma_data_direction); 2470 2471 if (!cmd->ctx) 2472 return; 2473 ha = vha->hw; 2474 if (cmd->ctx_dsd_alloced) 2475 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2476 2477 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2478 } 2479 2480 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2481 uint32_t req_cnt) 2482 { 2483 uint32_t cnt; 2484 struct req_que *req = qpair->req; 2485 2486 if (req->cnt < (req_cnt + 2)) { 2487 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2488 rd_reg_dword_relaxed(req->req_q_out)); 2489 2490 if (req->ring_index < cnt) 2491 req->cnt = cnt - req->ring_index; 2492 else 2493 req->cnt = req->length - (req->ring_index - cnt); 2494 2495 if (unlikely(req->cnt < (req_cnt + 2))) 2496 return -EAGAIN; 2497 } 2498 2499 req->cnt -= req_cnt; 2500 2501 return 0; 2502 } 2503 2504 /* 2505 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2506 */ 2507 static inline void *qlt_get_req_pkt(struct req_que *req) 2508 { 2509 /* Adjust ring index. */ 2510 req->ring_index++; 2511 if (req->ring_index == req->length) { 2512 req->ring_index = 0; 2513 req->ring_ptr = req->ring; 2514 } else { 2515 req->ring_ptr++; 2516 } 2517 return (cont_entry_t *)req->ring_ptr; 2518 } 2519 2520 /* ha->hardware_lock supposed to be held on entry */ 2521 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2522 { 2523 uint32_t h; 2524 int index; 2525 uint8_t found = 0; 2526 struct req_que *req = qpair->req; 2527 2528 h = req->current_outstanding_cmd; 2529 2530 for (index = 1; index < req->num_outstanding_cmds; index++) { 2531 h++; 2532 if (h == req->num_outstanding_cmds) 2533 h = 1; 2534 2535 if (h == QLA_TGT_SKIP_HANDLE) 2536 continue; 2537 2538 if (!req->outstanding_cmds[h]) { 2539 found = 1; 2540 break; 2541 } 2542 } 2543 2544 if (found) { 2545 req->current_outstanding_cmd = h; 2546 } else { 2547 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2548 "qla_target(%d): Ran out of empty cmd slots\n", 2549 qpair->vha->vp_idx); 2550 h = QLA_TGT_NULL_HANDLE; 2551 } 2552 2553 return h; 2554 } 2555 2556 /* ha->hardware_lock supposed to be held on entry */ 2557 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2558 struct qla_tgt_prm *prm) 2559 { 2560 uint32_t h; 2561 struct ctio7_to_24xx *pkt; 2562 struct atio_from_isp *atio = &prm->cmd->atio; 2563 uint16_t temp; 2564 2565 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2566 prm->pkt = pkt; 2567 memset(pkt, 0, sizeof(*pkt)); 2568 2569 pkt->entry_type = CTIO_TYPE7; 2570 pkt->entry_count = (uint8_t)prm->req_cnt; 2571 pkt->vp_index = prm->cmd->vp_idx; 2572 2573 h = qlt_make_handle(qpair); 2574 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2575 /* 2576 * CTIO type 7 from the firmware doesn't provide a way to 2577 * know the initiator's LOOP ID, hence we can't find 2578 * the session and, so, the command. 2579 */ 2580 return -EAGAIN; 2581 } else 2582 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2583 2584 pkt->handle = make_handle(qpair->req->id, h); 2585 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2586 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2587 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2588 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2589 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2590 temp = atio->u.isp24.attr << 9; 2591 pkt->u.status0.flags |= cpu_to_le16(temp); 2592 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2593 pkt->u.status0.ox_id = cpu_to_le16(temp); 2594 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2595 2596 return 0; 2597 } 2598 2599 /* 2600 * ha->hardware_lock supposed to be held on entry. We have already made sure 2601 * that there is sufficient amount of request entries to not drop it. 2602 */ 2603 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2604 { 2605 int cnt; 2606 struct dsd64 *cur_dsd; 2607 2608 /* Build continuation packets */ 2609 while (prm->seg_cnt > 0) { 2610 cont_a64_entry_t *cont_pkt64 = 2611 (cont_a64_entry_t *)qlt_get_req_pkt( 2612 prm->cmd->qpair->req); 2613 2614 /* 2615 * Make sure that from cont_pkt64 none of 2616 * 64-bit specific fields used for 32-bit 2617 * addressing. Cast to (cont_entry_t *) for 2618 * that. 2619 */ 2620 2621 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2622 2623 cont_pkt64->entry_count = 1; 2624 cont_pkt64->sys_define = 0; 2625 2626 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2627 cur_dsd = cont_pkt64->dsd; 2628 2629 /* Load continuation entry data segments */ 2630 for (cnt = 0; 2631 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2632 cnt++, prm->seg_cnt--) { 2633 append_dsd64(&cur_dsd, prm->sg); 2634 prm->sg = sg_next(prm->sg); 2635 } 2636 } 2637 } 2638 2639 /* 2640 * ha->hardware_lock supposed to be held on entry. We have already made sure 2641 * that there is sufficient amount of request entries to not drop it. 2642 */ 2643 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2644 { 2645 int cnt; 2646 struct dsd64 *cur_dsd; 2647 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2648 2649 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2650 2651 /* Setup packet address segment pointer */ 2652 cur_dsd = &pkt24->u.status0.dsd; 2653 2654 /* Set total data segment count */ 2655 if (prm->seg_cnt) 2656 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2657 2658 if (prm->seg_cnt == 0) { 2659 /* No data transfer */ 2660 cur_dsd->address = 0; 2661 cur_dsd->length = 0; 2662 return; 2663 } 2664 2665 /* If scatter gather */ 2666 2667 /* Load command entry data segments */ 2668 for (cnt = 0; 2669 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2670 cnt++, prm->seg_cnt--) { 2671 append_dsd64(&cur_dsd, prm->sg); 2672 prm->sg = sg_next(prm->sg); 2673 } 2674 2675 qlt_load_cont_data_segments(prm); 2676 } 2677 2678 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2679 { 2680 return cmd->bufflen > 0; 2681 } 2682 2683 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2684 { 2685 struct qla_tgt_cmd *cmd; 2686 struct scsi_qla_host *vha; 2687 2688 /* asc 0x10=dif error */ 2689 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2690 cmd = prm->cmd; 2691 vha = cmd->vha; 2692 /* ASCQ */ 2693 switch (prm->sense_buffer[13]) { 2694 case 1: 2695 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2696 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2697 "se_cmd=%p tag[%x]", 2698 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2699 cmd->atio.u.isp24.exchange_addr); 2700 break; 2701 case 2: 2702 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2703 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2704 "se_cmd=%p tag[%x]", 2705 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2706 cmd->atio.u.isp24.exchange_addr); 2707 break; 2708 case 3: 2709 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2710 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2711 "se_cmd=%p tag[%x]", 2712 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2713 cmd->atio.u.isp24.exchange_addr); 2714 break; 2715 default: 2716 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2717 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2718 "se_cmd=%p tag[%x]", 2719 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2720 cmd->atio.u.isp24.exchange_addr); 2721 break; 2722 } 2723 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2724 } 2725 } 2726 2727 /* 2728 * Called without ha->hardware_lock held 2729 */ 2730 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2731 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2732 uint32_t *full_req_cnt) 2733 { 2734 struct se_cmd *se_cmd = &cmd->se_cmd; 2735 struct qla_qpair *qpair = cmd->qpair; 2736 2737 prm->cmd = cmd; 2738 prm->tgt = cmd->tgt; 2739 prm->pkt = NULL; 2740 prm->rq_result = scsi_status; 2741 prm->sense_buffer = &cmd->sense_buffer[0]; 2742 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2743 prm->sg = NULL; 2744 prm->seg_cnt = -1; 2745 prm->req_cnt = 1; 2746 prm->residual = 0; 2747 prm->add_status_pkt = 0; 2748 prm->prot_sg = NULL; 2749 prm->prot_seg_cnt = 0; 2750 prm->tot_dsds = 0; 2751 2752 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2753 if (qlt_pci_map_calc_cnt(prm) != 0) 2754 return -EAGAIN; 2755 } 2756 2757 *full_req_cnt = prm->req_cnt; 2758 2759 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2760 prm->residual = se_cmd->residual_count; 2761 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2762 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2763 prm->residual, se_cmd->tag, 2764 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2765 cmd->bufflen, prm->rq_result); 2766 prm->rq_result |= SS_RESIDUAL_UNDER; 2767 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2768 prm->residual = se_cmd->residual_count; 2769 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2770 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2771 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2772 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2773 prm->rq_result |= SS_RESIDUAL_OVER; 2774 } 2775 2776 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2777 /* 2778 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2779 * ignored in *xmit_response() below 2780 */ 2781 if (qlt_has_data(cmd)) { 2782 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2783 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2784 (prm->rq_result != 0))) { 2785 prm->add_status_pkt = 1; 2786 (*full_req_cnt)++; 2787 } 2788 } 2789 } 2790 2791 return 0; 2792 } 2793 2794 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2795 int sending_sense) 2796 { 2797 if (cmd->qpair->enable_class_2) 2798 return 0; 2799 2800 if (sending_sense) 2801 return cmd->conf_compl_supported; 2802 else 2803 return cmd->qpair->enable_explicit_conf && 2804 cmd->conf_compl_supported; 2805 } 2806 2807 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2808 struct qla_tgt_prm *prm) 2809 { 2810 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2811 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2812 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2813 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2814 ctio->u.status0.flags |= cpu_to_le16( 2815 CTIO7_FLAGS_EXPLICIT_CONFORM | 2816 CTIO7_FLAGS_CONFORM_REQ); 2817 } 2818 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2819 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2820 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2821 int i; 2822 2823 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2824 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2825 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2826 "Skipping EXPLICIT_CONFORM and " 2827 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2828 "non GOOD status\n"); 2829 goto skip_explict_conf; 2830 } 2831 ctio->u.status1.flags |= cpu_to_le16( 2832 CTIO7_FLAGS_EXPLICIT_CONFORM | 2833 CTIO7_FLAGS_CONFORM_REQ); 2834 } 2835 skip_explict_conf: 2836 ctio->u.status1.flags &= 2837 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2838 ctio->u.status1.flags |= 2839 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2840 ctio->u.status1.scsi_status |= 2841 cpu_to_le16(SS_SENSE_LEN_VALID); 2842 ctio->u.status1.sense_length = 2843 cpu_to_le16(prm->sense_buffer_len); 2844 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2845 uint32_t v; 2846 2847 v = get_unaligned_be32( 2848 &((uint32_t *)prm->sense_buffer)[i]); 2849 put_unaligned_le32(v, 2850 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2851 } 2852 qlt_print_dif_err(prm); 2853 2854 } else { 2855 ctio->u.status1.flags &= 2856 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2857 ctio->u.status1.flags |= 2858 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2859 ctio->u.status1.sense_length = 0; 2860 memset(ctio->u.status1.sense_data, 0, 2861 sizeof(ctio->u.status1.sense_data)); 2862 } 2863 2864 /* Sense with len > 24, is it possible ??? */ 2865 } 2866 2867 static inline int 2868 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2869 { 2870 switch (se_cmd->prot_op) { 2871 case TARGET_PROT_DOUT_INSERT: 2872 case TARGET_PROT_DIN_STRIP: 2873 if (ql2xenablehba_err_chk >= 1) 2874 return 1; 2875 break; 2876 case TARGET_PROT_DOUT_PASS: 2877 case TARGET_PROT_DIN_PASS: 2878 if (ql2xenablehba_err_chk >= 2) 2879 return 1; 2880 break; 2881 case TARGET_PROT_DIN_INSERT: 2882 case TARGET_PROT_DOUT_STRIP: 2883 return 1; 2884 default: 2885 break; 2886 } 2887 return 0; 2888 } 2889 2890 static inline int 2891 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2892 { 2893 switch (se_cmd->prot_op) { 2894 case TARGET_PROT_DIN_INSERT: 2895 case TARGET_PROT_DOUT_INSERT: 2896 case TARGET_PROT_DIN_STRIP: 2897 case TARGET_PROT_DOUT_STRIP: 2898 case TARGET_PROT_DIN_PASS: 2899 case TARGET_PROT_DOUT_PASS: 2900 return 1; 2901 default: 2902 return 0; 2903 } 2904 return 0; 2905 } 2906 2907 /* 2908 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2909 */ 2910 static void 2911 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2912 uint16_t *pfw_prot_opts) 2913 { 2914 struct se_cmd *se_cmd = &cmd->se_cmd; 2915 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2916 scsi_qla_host_t *vha = cmd->tgt->vha; 2917 struct qla_hw_data *ha = vha->hw; 2918 uint32_t t32 = 0; 2919 2920 /* 2921 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2922 * have been immplemented by TCM, before AppTag is avail. 2923 * Look for modesense_handlers[] 2924 */ 2925 ctx->app_tag = 0; 2926 ctx->app_tag_mask[0] = 0x0; 2927 ctx->app_tag_mask[1] = 0x0; 2928 2929 if (IS_PI_UNINIT_CAPABLE(ha)) { 2930 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2931 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2932 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2933 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2934 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2935 } 2936 2937 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2938 2939 switch (se_cmd->prot_type) { 2940 case TARGET_DIF_TYPE0_PROT: 2941 /* 2942 * No check for ql2xenablehba_err_chk, as it 2943 * would be an I/O error if hba tag generation 2944 * is not done. 2945 */ 2946 ctx->ref_tag = cpu_to_le32(lba); 2947 /* enable ALL bytes of the ref tag */ 2948 ctx->ref_tag_mask[0] = 0xff; 2949 ctx->ref_tag_mask[1] = 0xff; 2950 ctx->ref_tag_mask[2] = 0xff; 2951 ctx->ref_tag_mask[3] = 0xff; 2952 break; 2953 case TARGET_DIF_TYPE1_PROT: 2954 /* 2955 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2956 * REF tag, and 16 bit app tag. 2957 */ 2958 ctx->ref_tag = cpu_to_le32(lba); 2959 if (!qla_tgt_ref_mask_check(se_cmd) || 2960 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2961 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2962 break; 2963 } 2964 /* enable ALL bytes of the ref tag */ 2965 ctx->ref_tag_mask[0] = 0xff; 2966 ctx->ref_tag_mask[1] = 0xff; 2967 ctx->ref_tag_mask[2] = 0xff; 2968 ctx->ref_tag_mask[3] = 0xff; 2969 break; 2970 case TARGET_DIF_TYPE2_PROT: 2971 /* 2972 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2973 * tag has to match LBA in CDB + N 2974 */ 2975 ctx->ref_tag = cpu_to_le32(lba); 2976 if (!qla_tgt_ref_mask_check(se_cmd) || 2977 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2978 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2979 break; 2980 } 2981 /* enable ALL bytes of the ref tag */ 2982 ctx->ref_tag_mask[0] = 0xff; 2983 ctx->ref_tag_mask[1] = 0xff; 2984 ctx->ref_tag_mask[2] = 0xff; 2985 ctx->ref_tag_mask[3] = 0xff; 2986 break; 2987 case TARGET_DIF_TYPE3_PROT: 2988 /* For TYPE 3 protection: 16 bit GUARD only */ 2989 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2990 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2991 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2992 break; 2993 } 2994 } 2995 2996 static inline int 2997 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2998 { 2999 struct dsd64 *cur_dsd; 3000 uint32_t transfer_length = 0; 3001 uint32_t data_bytes; 3002 uint32_t dif_bytes; 3003 uint8_t bundling = 1; 3004 struct crc_context *crc_ctx_pkt = NULL; 3005 struct qla_hw_data *ha; 3006 struct ctio_crc2_to_fw *pkt; 3007 dma_addr_t crc_ctx_dma; 3008 uint16_t fw_prot_opts = 0; 3009 struct qla_tgt_cmd *cmd = prm->cmd; 3010 struct se_cmd *se_cmd = &cmd->se_cmd; 3011 uint32_t h; 3012 struct atio_from_isp *atio = &prm->cmd->atio; 3013 struct qla_tc_param tc; 3014 uint16_t t16; 3015 scsi_qla_host_t *vha = cmd->vha; 3016 3017 ha = vha->hw; 3018 3019 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3020 prm->pkt = pkt; 3021 memset(pkt, 0, sizeof(*pkt)); 3022 3023 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3024 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3025 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3026 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3027 3028 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3029 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3030 bundling = 0; 3031 3032 /* Compute dif len and adjust data len to incude protection */ 3033 data_bytes = cmd->bufflen; 3034 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3035 3036 switch (se_cmd->prot_op) { 3037 case TARGET_PROT_DIN_INSERT: 3038 case TARGET_PROT_DOUT_STRIP: 3039 transfer_length = data_bytes; 3040 if (cmd->prot_sg_cnt) 3041 data_bytes += dif_bytes; 3042 break; 3043 case TARGET_PROT_DIN_STRIP: 3044 case TARGET_PROT_DOUT_INSERT: 3045 case TARGET_PROT_DIN_PASS: 3046 case TARGET_PROT_DOUT_PASS: 3047 transfer_length = data_bytes + dif_bytes; 3048 break; 3049 default: 3050 BUG(); 3051 break; 3052 } 3053 3054 if (!qlt_hba_err_chk_enabled(se_cmd)) 3055 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3056 /* HBA error checking enabled */ 3057 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3058 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3059 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3060 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3061 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3062 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3063 } 3064 3065 switch (se_cmd->prot_op) { 3066 case TARGET_PROT_DIN_INSERT: 3067 case TARGET_PROT_DOUT_INSERT: 3068 fw_prot_opts |= PO_MODE_DIF_INSERT; 3069 break; 3070 case TARGET_PROT_DIN_STRIP: 3071 case TARGET_PROT_DOUT_STRIP: 3072 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3073 break; 3074 case TARGET_PROT_DIN_PASS: 3075 case TARGET_PROT_DOUT_PASS: 3076 fw_prot_opts |= PO_MODE_DIF_PASS; 3077 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3078 break; 3079 default:/* Normal Request */ 3080 fw_prot_opts |= PO_MODE_DIF_PASS; 3081 break; 3082 } 3083 3084 /* ---- PKT ---- */ 3085 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3086 pkt->entry_type = CTIO_CRC2; 3087 pkt->entry_count = 1; 3088 pkt->vp_index = cmd->vp_idx; 3089 3090 h = qlt_make_handle(qpair); 3091 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3092 /* 3093 * CTIO type 7 from the firmware doesn't provide a way to 3094 * know the initiator's LOOP ID, hence we can't find 3095 * the session and, so, the command. 3096 */ 3097 return -EAGAIN; 3098 } else 3099 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3100 3101 pkt->handle = make_handle(qpair->req->id, h); 3102 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3103 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3104 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3105 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3106 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3107 3108 /* silence compile warning */ 3109 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3110 pkt->ox_id = cpu_to_le16(t16); 3111 3112 t16 = (atio->u.isp24.attr << 9); 3113 pkt->flags |= cpu_to_le16(t16); 3114 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3115 3116 /* Set transfer direction */ 3117 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3118 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3119 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3120 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3121 3122 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3123 /* Fibre channel byte count */ 3124 pkt->transfer_length = cpu_to_le32(transfer_length); 3125 3126 /* ----- CRC context -------- */ 3127 3128 /* Allocate CRC context from global pool */ 3129 crc_ctx_pkt = cmd->ctx = 3130 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3131 3132 if (!crc_ctx_pkt) 3133 goto crc_queuing_error; 3134 3135 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3136 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3137 3138 /* Set handle */ 3139 crc_ctx_pkt->handle = pkt->handle; 3140 3141 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3142 3143 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3144 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3145 3146 if (!bundling) { 3147 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3148 } else { 3149 /* 3150 * Configure Bundling if we need to fetch interlaving 3151 * protection PCI accesses 3152 */ 3153 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3154 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3155 crc_ctx_pkt->u.bundling.dseg_count = 3156 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3157 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3158 } 3159 3160 /* Finish the common fields of CRC pkt */ 3161 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3162 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3163 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3164 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3165 3166 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3167 tc.vha = vha; 3168 tc.blk_sz = cmd->blk_sz; 3169 tc.bufflen = cmd->bufflen; 3170 tc.sg = cmd->sg; 3171 tc.prot_sg = cmd->prot_sg; 3172 tc.ctx = crc_ctx_pkt; 3173 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3174 3175 /* Walks data segments */ 3176 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3177 3178 if (!bundling && prm->prot_seg_cnt) { 3179 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3180 prm->tot_dsds, &tc)) 3181 goto crc_queuing_error; 3182 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3183 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3184 goto crc_queuing_error; 3185 3186 if (bundling && prm->prot_seg_cnt) { 3187 /* Walks dif segments */ 3188 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3189 3190 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3191 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3192 prm->prot_seg_cnt, cmd)) 3193 goto crc_queuing_error; 3194 } 3195 return QLA_SUCCESS; 3196 3197 crc_queuing_error: 3198 /* Cleanup will be performed by the caller */ 3199 qpair->req->outstanding_cmds[h] = NULL; 3200 3201 return QLA_FUNCTION_FAILED; 3202 } 3203 3204 /* 3205 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3206 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3207 */ 3208 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3209 uint8_t scsi_status) 3210 { 3211 struct scsi_qla_host *vha = cmd->vha; 3212 struct qla_qpair *qpair = cmd->qpair; 3213 struct ctio7_to_24xx *pkt; 3214 struct qla_tgt_prm prm; 3215 uint32_t full_req_cnt = 0; 3216 unsigned long flags = 0; 3217 int res; 3218 3219 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3220 (cmd->sess && cmd->sess->deleted)) { 3221 cmd->state = QLA_TGT_STATE_PROCESSED; 3222 res = 0; 3223 goto free; 3224 } 3225 3226 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3227 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3228 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3229 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3230 &cmd->se_cmd, qpair->id); 3231 3232 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3233 &full_req_cnt); 3234 if (unlikely(res != 0)) 3235 goto free; 3236 3237 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3238 3239 if (xmit_type == QLA_TGT_XMIT_STATUS) 3240 qpair->tgt_counters.core_qla_snd_status++; 3241 else 3242 qpair->tgt_counters.core_qla_que_buf++; 3243 3244 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3245 /* 3246 * Either the port is not online or this request was from 3247 * previous life, just abort the processing. 3248 */ 3249 cmd->state = QLA_TGT_STATE_PROCESSED; 3250 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3251 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3252 vha->flags.online, qla2x00_reset_active(vha), 3253 cmd->reset_count, qpair->chip_reset); 3254 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3255 res = 0; 3256 goto free; 3257 } 3258 3259 /* Does F/W have an IOCBs for this request */ 3260 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3261 if (unlikely(res)) 3262 goto out_unmap_unlock; 3263 3264 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3265 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3266 else 3267 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3268 if (unlikely(res != 0)) { 3269 qpair->req->cnt += full_req_cnt; 3270 goto out_unmap_unlock; 3271 } 3272 3273 pkt = (struct ctio7_to_24xx *)prm.pkt; 3274 3275 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3276 pkt->u.status0.flags |= 3277 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3278 CTIO7_FLAGS_STATUS_MODE_0); 3279 3280 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3281 qlt_load_data_segments(&prm); 3282 3283 if (prm.add_status_pkt == 0) { 3284 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3285 pkt->u.status0.scsi_status = 3286 cpu_to_le16(prm.rq_result); 3287 pkt->u.status0.residual = 3288 cpu_to_le32(prm.residual); 3289 pkt->u.status0.flags |= cpu_to_le16( 3290 CTIO7_FLAGS_SEND_STATUS); 3291 if (qlt_need_explicit_conf(cmd, 0)) { 3292 pkt->u.status0.flags |= 3293 cpu_to_le16( 3294 CTIO7_FLAGS_EXPLICIT_CONFORM | 3295 CTIO7_FLAGS_CONFORM_REQ); 3296 } 3297 } 3298 3299 } else { 3300 /* 3301 * We have already made sure that there is sufficient 3302 * amount of request entries to not drop HW lock in 3303 * req_pkt(). 3304 */ 3305 struct ctio7_to_24xx *ctio = 3306 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3307 qpair->req); 3308 3309 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3310 "Building additional status packet 0x%p.\n", 3311 ctio); 3312 3313 /* 3314 * T10Dif: ctio_crc2_to_fw overlay ontop of 3315 * ctio7_to_24xx 3316 */ 3317 memcpy(ctio, pkt, sizeof(*ctio)); 3318 /* reset back to CTIO7 */ 3319 ctio->entry_count = 1; 3320 ctio->entry_type = CTIO_TYPE7; 3321 ctio->dseg_count = 0; 3322 ctio->u.status1.flags &= ~cpu_to_le16( 3323 CTIO7_FLAGS_DATA_IN); 3324 3325 /* Real finish is ctio_m1's finish */ 3326 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3327 pkt->u.status0.flags |= cpu_to_le16( 3328 CTIO7_FLAGS_DONT_RET_CTIO); 3329 3330 /* qlt_24xx_init_ctio_to_isp will correct 3331 * all neccessary fields that's part of CTIO7. 3332 * There should be no residual of CTIO-CRC2 data. 3333 */ 3334 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3335 &prm); 3336 } 3337 } else 3338 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3339 3340 3341 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3342 cmd->cmd_sent_to_fw = 1; 3343 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3344 3345 /* Memory Barrier */ 3346 wmb(); 3347 if (qpair->reqq_start_iocbs) 3348 qpair->reqq_start_iocbs(qpair); 3349 else 3350 qla2x00_start_iocbs(vha, qpair->req); 3351 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3352 3353 return 0; 3354 3355 out_unmap_unlock: 3356 qlt_unmap_sg(vha, cmd); 3357 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3358 3359 free: 3360 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3361 return res; 3362 } 3363 EXPORT_SYMBOL(qlt_xmit_response); 3364 3365 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3366 { 3367 struct ctio7_to_24xx *pkt; 3368 struct scsi_qla_host *vha = cmd->vha; 3369 struct qla_tgt *tgt = cmd->tgt; 3370 struct qla_tgt_prm prm; 3371 unsigned long flags = 0; 3372 int res = 0; 3373 struct qla_qpair *qpair = cmd->qpair; 3374 3375 memset(&prm, 0, sizeof(prm)); 3376 prm.cmd = cmd; 3377 prm.tgt = tgt; 3378 prm.sg = NULL; 3379 prm.req_cnt = 1; 3380 3381 /* Calculate number of entries and segments required */ 3382 if (qlt_pci_map_calc_cnt(&prm) != 0) 3383 return -EAGAIN; 3384 3385 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3386 (cmd->sess && cmd->sess->deleted)) { 3387 /* 3388 * Either the port is not online or this request was from 3389 * previous life, just abort the processing. 3390 */ 3391 cmd->aborted = 1; 3392 cmd->write_data_transferred = 0; 3393 cmd->state = QLA_TGT_STATE_DATA_IN; 3394 vha->hw->tgt.tgt_ops->handle_data(cmd); 3395 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3396 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3397 vha->flags.online, qla2x00_reset_active(vha), 3398 cmd->reset_count, qpair->chip_reset); 3399 return 0; 3400 } 3401 3402 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3403 /* Does F/W have an IOCBs for this request */ 3404 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3405 if (res != 0) 3406 goto out_unlock_free_unmap; 3407 if (cmd->se_cmd.prot_op) 3408 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3409 else 3410 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3411 3412 if (unlikely(res != 0)) { 3413 qpair->req->cnt += prm.req_cnt; 3414 goto out_unlock_free_unmap; 3415 } 3416 3417 pkt = (struct ctio7_to_24xx *)prm.pkt; 3418 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3419 CTIO7_FLAGS_STATUS_MODE_0); 3420 3421 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3422 qlt_load_data_segments(&prm); 3423 3424 cmd->state = QLA_TGT_STATE_NEED_DATA; 3425 cmd->cmd_sent_to_fw = 1; 3426 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3427 3428 /* Memory Barrier */ 3429 wmb(); 3430 if (qpair->reqq_start_iocbs) 3431 qpair->reqq_start_iocbs(qpair); 3432 else 3433 qla2x00_start_iocbs(vha, qpair->req); 3434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3435 3436 return res; 3437 3438 out_unlock_free_unmap: 3439 qlt_unmap_sg(vha, cmd); 3440 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3441 3442 return res; 3443 } 3444 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3445 3446 3447 /* 3448 * it is assumed either hardware_lock or qpair lock is held. 3449 */ 3450 static void 3451 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3452 struct ctio_crc_from_fw *sts) 3453 { 3454 uint8_t *ap = &sts->actual_dif[0]; 3455 uint8_t *ep = &sts->expected_dif[0]; 3456 uint64_t lba = cmd->se_cmd.t_task_lba; 3457 uint8_t scsi_status, sense_key, asc, ascq; 3458 unsigned long flags; 3459 struct scsi_qla_host *vha = cmd->vha; 3460 3461 cmd->trc_flags |= TRC_DIF_ERR; 3462 3463 cmd->a_guard = get_unaligned_be16(ap + 0); 3464 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3465 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3466 3467 cmd->e_guard = get_unaligned_be16(ep + 0); 3468 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3469 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3470 3471 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3472 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3473 3474 scsi_status = sense_key = asc = ascq = 0; 3475 3476 /* check appl tag */ 3477 if (cmd->e_app_tag != cmd->a_app_tag) { 3478 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3479 "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]", 3480 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3481 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3482 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3483 cmd->atio.u.isp24.fcp_hdr.ox_id); 3484 3485 cmd->dif_err_code = DIF_ERR_APP; 3486 scsi_status = SAM_STAT_CHECK_CONDITION; 3487 sense_key = ABORTED_COMMAND; 3488 asc = 0x10; 3489 ascq = 0x2; 3490 } 3491 3492 /* check ref tag */ 3493 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3494 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3495 "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] ", 3496 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3497 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3498 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3499 cmd->atio.u.isp24.fcp_hdr.ox_id); 3500 3501 cmd->dif_err_code = DIF_ERR_REF; 3502 scsi_status = SAM_STAT_CHECK_CONDITION; 3503 sense_key = ABORTED_COMMAND; 3504 asc = 0x10; 3505 ascq = 0x3; 3506 goto out; 3507 } 3508 3509 /* check guard */ 3510 if (cmd->e_guard != cmd->a_guard) { 3511 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3512 "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]", 3513 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3514 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3515 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3516 cmd->atio.u.isp24.fcp_hdr.ox_id); 3517 3518 cmd->dif_err_code = DIF_ERR_GRD; 3519 scsi_status = SAM_STAT_CHECK_CONDITION; 3520 sense_key = ABORTED_COMMAND; 3521 asc = 0x10; 3522 ascq = 0x1; 3523 } 3524 out: 3525 switch (cmd->state) { 3526 case QLA_TGT_STATE_NEED_DATA: 3527 /* handle_data will load DIF error code */ 3528 cmd->state = QLA_TGT_STATE_DATA_IN; 3529 vha->hw->tgt.tgt_ops->handle_data(cmd); 3530 break; 3531 default: 3532 spin_lock_irqsave(&cmd->cmd_lock, flags); 3533 if (cmd->aborted) { 3534 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3535 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3536 break; 3537 } 3538 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3539 3540 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3541 ascq); 3542 /* assume scsi status gets out on the wire. 3543 * Will not wait for completion. 3544 */ 3545 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3546 break; 3547 } 3548 } 3549 3550 /* If hardware_lock held on entry, might drop it, then reaquire */ 3551 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3552 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3553 struct imm_ntfy_from_isp *ntfy) 3554 { 3555 struct nack_to_isp *nack; 3556 struct qla_hw_data *ha = vha->hw; 3557 request_t *pkt; 3558 int ret = 0; 3559 3560 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3561 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3562 3563 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3564 if (pkt == NULL) { 3565 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3566 "qla_target(%d): %s failed: unable to allocate " 3567 "request packet\n", vha->vp_idx, __func__); 3568 return -ENOMEM; 3569 } 3570 3571 pkt->entry_type = NOTIFY_ACK_TYPE; 3572 pkt->entry_count = 1; 3573 pkt->handle = QLA_TGT_SKIP_HANDLE; 3574 3575 nack = (struct nack_to_isp *)pkt; 3576 nack->ox_id = ntfy->ox_id; 3577 3578 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3579 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3580 nack->u.isp24.flags = ntfy->u.isp24.flags & 3581 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3582 } 3583 3584 /* terminate */ 3585 nack->u.isp24.flags |= 3586 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3587 3588 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3589 nack->u.isp24.status = ntfy->u.isp24.status; 3590 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3591 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3592 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3593 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3594 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3595 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3596 3597 qla2x00_start_iocbs(vha, vha->req); 3598 return ret; 3599 } 3600 3601 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3602 struct imm_ntfy_from_isp *imm, int ha_locked) 3603 { 3604 int rc; 3605 3606 WARN_ON_ONCE(!ha_locked); 3607 rc = __qlt_send_term_imm_notif(vha, imm); 3608 pr_debug("rc = %d\n", rc); 3609 } 3610 3611 /* 3612 * If hardware_lock held on entry, might drop it, then reaquire 3613 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3614 */ 3615 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3616 struct qla_tgt_cmd *cmd, 3617 struct atio_from_isp *atio) 3618 { 3619 struct scsi_qla_host *vha = qpair->vha; 3620 struct ctio7_to_24xx *ctio24; 3621 struct qla_hw_data *ha = vha->hw; 3622 request_t *pkt; 3623 int ret = 0; 3624 uint16_t temp; 3625 3626 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3627 3628 if (cmd) 3629 vha = cmd->vha; 3630 3631 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3632 if (pkt == NULL) { 3633 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3634 "qla_target(%d): %s failed: unable to allocate " 3635 "request packet\n", vha->vp_idx, __func__); 3636 return -ENOMEM; 3637 } 3638 3639 if (cmd != NULL) { 3640 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3641 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3642 "qla_target(%d): Terminating cmd %p with " 3643 "incorrect state %d\n", vha->vp_idx, cmd, 3644 cmd->state); 3645 } else 3646 ret = 1; 3647 } 3648 3649 qpair->tgt_counters.num_term_xchg_sent++; 3650 pkt->entry_count = 1; 3651 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3652 3653 ctio24 = (struct ctio7_to_24xx *)pkt; 3654 ctio24->entry_type = CTIO_TYPE7; 3655 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3656 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3657 ctio24->vp_index = vha->vp_idx; 3658 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3659 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3660 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3661 CTIO7_FLAGS_TERMINATE; 3662 ctio24->u.status1.flags = cpu_to_le16(temp); 3663 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3664 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3665 3666 /* Memory Barrier */ 3667 wmb(); 3668 if (qpair->reqq_start_iocbs) 3669 qpair->reqq_start_iocbs(qpair); 3670 else 3671 qla2x00_start_iocbs(vha, qpair->req); 3672 return ret; 3673 } 3674 3675 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3676 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3677 int ul_abort) 3678 { 3679 struct scsi_qla_host *vha; 3680 unsigned long flags = 0; 3681 int rc; 3682 3683 /* why use different vha? NPIV */ 3684 if (cmd) 3685 vha = cmd->vha; 3686 else 3687 vha = qpair->vha; 3688 3689 if (ha_locked) { 3690 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3691 if (rc == -ENOMEM) 3692 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3693 goto done; 3694 } 3695 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3696 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3697 if (rc == -ENOMEM) 3698 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3699 3700 done: 3701 if (cmd && !ul_abort && !cmd->aborted) { 3702 if (cmd->sg_mapped) 3703 qlt_unmap_sg(vha, cmd); 3704 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3705 } 3706 3707 if (!ha_locked) 3708 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3709 3710 return; 3711 } 3712 3713 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3714 { 3715 struct list_head free_list; 3716 struct qla_tgt_cmd *cmd, *tcmd; 3717 3718 vha->hw->tgt.leak_exchg_thresh_hold = 3719 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3720 3721 cmd = tcmd = NULL; 3722 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3723 INIT_LIST_HEAD(&free_list); 3724 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3725 3726 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3727 list_del(&cmd->cmd_list); 3728 /* This cmd was never sent to TCM. There is no need 3729 * to schedule free or call free_cmd 3730 */ 3731 qlt_free_cmd(cmd); 3732 vha->hw->tgt.num_qfull_cmds_alloc--; 3733 } 3734 } 3735 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3736 } 3737 3738 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3739 { 3740 uint32_t total_leaked; 3741 3742 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3743 3744 if (vha->hw->tgt.leak_exchg_thresh_hold && 3745 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3746 3747 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3748 "Chip reset due to exchange starvation: %d/%d.\n", 3749 total_leaked, vha->hw->cur_fw_xcb_count); 3750 3751 if (IS_P3P_TYPE(vha->hw)) 3752 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3753 else 3754 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3755 qla2xxx_wake_dpc(vha); 3756 } 3757 3758 } 3759 3760 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3761 { 3762 struct qla_tgt *tgt = cmd->tgt; 3763 struct scsi_qla_host *vha = tgt->vha; 3764 struct se_cmd *se_cmd = &cmd->se_cmd; 3765 unsigned long flags; 3766 3767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3768 "qla_target(%d): terminating exchange for aborted cmd=%p " 3769 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3770 se_cmd->tag); 3771 3772 spin_lock_irqsave(&cmd->cmd_lock, flags); 3773 if (cmd->aborted) { 3774 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3775 /* 3776 * It's normal to see 2 calls in this path: 3777 * 1) XFER Rdy completion + CMD_T_ABORT 3778 * 2) TCM TMR - drain_state_list 3779 */ 3780 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3781 "multiple abort. %p transport_state %x, t_state %x, " 3782 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3783 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3784 return EIO; 3785 } 3786 cmd->aborted = 1; 3787 cmd->trc_flags |= TRC_ABORT; 3788 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3789 3790 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3791 return 0; 3792 } 3793 EXPORT_SYMBOL(qlt_abort_cmd); 3794 3795 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3796 { 3797 struct fc_port *sess = cmd->sess; 3798 3799 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3800 "%s: se_cmd[%p] ox_id %04x\n", 3801 __func__, &cmd->se_cmd, 3802 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3803 3804 BUG_ON(cmd->cmd_in_wq); 3805 3806 if (cmd->sg_mapped) 3807 qlt_unmap_sg(cmd->vha, cmd); 3808 3809 if (!cmd->q_full) 3810 qlt_decr_num_pend_cmds(cmd->vha); 3811 3812 BUG_ON(cmd->sg_mapped); 3813 cmd->jiffies_at_free = get_jiffies_64(); 3814 if (unlikely(cmd->free_sg)) 3815 kfree(cmd->sg); 3816 3817 if (!sess || !sess->se_sess) { 3818 WARN_ON(1); 3819 return; 3820 } 3821 cmd->jiffies_at_free = get_jiffies_64(); 3822 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3823 } 3824 EXPORT_SYMBOL(qlt_free_cmd); 3825 3826 /* 3827 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3828 */ 3829 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3830 struct qla_tgt_cmd *cmd, uint32_t status) 3831 { 3832 int term = 0; 3833 struct scsi_qla_host *vha = qpair->vha; 3834 3835 if (cmd->se_cmd.prot_op) 3836 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3837 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3838 "se_cmd=%p tag[%x] op %#x/%s", 3839 cmd->lba, cmd->lba, 3840 cmd->num_blks, &cmd->se_cmd, 3841 cmd->atio.u.isp24.exchange_addr, 3842 cmd->se_cmd.prot_op, 3843 prot_op_str(cmd->se_cmd.prot_op)); 3844 3845 if (ctio != NULL) { 3846 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3847 3848 term = !(c->flags & 3849 cpu_to_le16(OF_TERM_EXCH)); 3850 } else 3851 term = 1; 3852 3853 if (term) 3854 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3855 3856 return term; 3857 } 3858 3859 3860 /* ha->hardware_lock supposed to be held on entry */ 3861 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3862 struct rsp_que *rsp, uint32_t handle, void *ctio) 3863 { 3864 void *cmd = NULL; 3865 struct req_que *req; 3866 int qid = GET_QID(handle); 3867 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3868 3869 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3870 return NULL; 3871 3872 if (qid == rsp->req->id) { 3873 req = rsp->req; 3874 } else if (vha->hw->req_q_map[qid]) { 3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3876 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3877 vha->vp_idx, rsp->id, handle); 3878 req = vha->hw->req_q_map[qid]; 3879 } else { 3880 return NULL; 3881 } 3882 3883 h &= QLA_CMD_HANDLE_MASK; 3884 3885 if (h != QLA_TGT_NULL_HANDLE) { 3886 if (unlikely(h >= req->num_outstanding_cmds)) { 3887 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3888 "qla_target(%d): Wrong handle %x received\n", 3889 vha->vp_idx, handle); 3890 return NULL; 3891 } 3892 3893 cmd = req->outstanding_cmds[h]; 3894 if (unlikely(cmd == NULL)) { 3895 ql_dbg(ql_dbg_async, vha, 0xe053, 3896 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3897 vha->vp_idx, handle, req->id, rsp->id); 3898 return NULL; 3899 } 3900 req->outstanding_cmds[h] = NULL; 3901 } else if (ctio != NULL) { 3902 /* We can't get loop ID from CTIO7 */ 3903 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3904 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3905 "support NULL handles\n", vha->vp_idx); 3906 return NULL; 3907 } 3908 3909 return cmd; 3910 } 3911 3912 /* 3913 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3914 */ 3915 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3916 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3917 { 3918 struct qla_hw_data *ha = vha->hw; 3919 struct se_cmd *se_cmd; 3920 struct qla_tgt_cmd *cmd; 3921 struct qla_qpair *qpair = rsp->qpair; 3922 3923 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3924 /* That could happen only in case of an error/reset/abort */ 3925 if (status != CTIO_SUCCESS) { 3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3927 "Intermediate CTIO received" 3928 " (status %x)\n", status); 3929 } 3930 return; 3931 } 3932 3933 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3934 if (cmd == NULL) 3935 return; 3936 3937 se_cmd = &cmd->se_cmd; 3938 cmd->cmd_sent_to_fw = 0; 3939 3940 qlt_unmap_sg(vha, cmd); 3941 3942 if (unlikely(status != CTIO_SUCCESS)) { 3943 switch (status & 0xFFFF) { 3944 case CTIO_INVALID_RX_ID: 3945 if (printk_ratelimit()) 3946 dev_info(&vha->hw->pdev->dev, 3947 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3948 vha->vp_idx, cmd->atio.u.isp24.attr, 3949 ((cmd->ctio_flags >> 9) & 0xf), 3950 cmd->ctio_flags); 3951 3952 break; 3953 case CTIO_LIP_RESET: 3954 case CTIO_TARGET_RESET: 3955 case CTIO_ABORTED: 3956 /* driver request abort via Terminate exchange */ 3957 case CTIO_TIMEOUT: 3958 /* They are OK */ 3959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3960 "qla_target(%d): CTIO with " 3961 "status %#x received, state %x, se_cmd %p, " 3962 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3963 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3964 status, cmd->state, se_cmd); 3965 break; 3966 3967 case CTIO_PORT_LOGGED_OUT: 3968 case CTIO_PORT_UNAVAILABLE: 3969 { 3970 int logged_out = 3971 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3972 3973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3974 "qla_target(%d): CTIO with %s status %x " 3975 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3976 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3977 status, cmd->state, se_cmd); 3978 3979 if (logged_out && cmd->sess) { 3980 /* 3981 * Session is already logged out, but we need 3982 * to notify initiator, who's not aware of this 3983 */ 3984 cmd->sess->send_els_logo = 1; 3985 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3986 "%s %d %8phC post del sess\n", 3987 __func__, __LINE__, cmd->sess->port_name); 3988 3989 qlt_schedule_sess_for_deletion(cmd->sess); 3990 } 3991 break; 3992 } 3993 case CTIO_DIF_ERROR: { 3994 struct ctio_crc_from_fw *crc = 3995 (struct ctio_crc_from_fw *)ctio; 3996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3997 "qla_target(%d): CTIO with DIF_ERROR status %x " 3998 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3999 "expect_dif[0x%llx]\n", 4000 vha->vp_idx, status, cmd->state, se_cmd, 4001 *((u64 *)&crc->actual_dif[0]), 4002 *((u64 *)&crc->expected_dif[0])); 4003 4004 qlt_handle_dif_error(qpair, cmd, ctio); 4005 return; 4006 } 4007 default: 4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4009 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4010 vha->vp_idx, status, cmd->state, se_cmd); 4011 break; 4012 } 4013 4014 4015 /* "cmd->aborted" means 4016 * cmd is already aborted/terminated, we don't 4017 * need to terminate again. The exchange is already 4018 * cleaned up/freed at FW level. Just cleanup at driver 4019 * level. 4020 */ 4021 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4022 (!cmd->aborted)) { 4023 cmd->trc_flags |= TRC_CTIO_ERR; 4024 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4025 return; 4026 } 4027 } 4028 4029 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4030 cmd->trc_flags |= TRC_CTIO_DONE; 4031 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4032 cmd->state = QLA_TGT_STATE_DATA_IN; 4033 4034 if (status == CTIO_SUCCESS) 4035 cmd->write_data_transferred = 1; 4036 4037 ha->tgt.tgt_ops->handle_data(cmd); 4038 return; 4039 } else if (cmd->aborted) { 4040 cmd->trc_flags |= TRC_CTIO_ABORTED; 4041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4042 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4043 } else { 4044 cmd->trc_flags |= TRC_CTIO_STRANGE; 4045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4046 "qla_target(%d): A command in state (%d) should " 4047 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4048 } 4049 4050 if (unlikely(status != CTIO_SUCCESS) && 4051 !cmd->aborted) { 4052 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4053 dump_stack(); 4054 } 4055 4056 ha->tgt.tgt_ops->free_cmd(cmd); 4057 } 4058 4059 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4060 uint8_t task_codes) 4061 { 4062 int fcp_task_attr; 4063 4064 switch (task_codes) { 4065 case ATIO_SIMPLE_QUEUE: 4066 fcp_task_attr = TCM_SIMPLE_TAG; 4067 break; 4068 case ATIO_HEAD_OF_QUEUE: 4069 fcp_task_attr = TCM_HEAD_TAG; 4070 break; 4071 case ATIO_ORDERED_QUEUE: 4072 fcp_task_attr = TCM_ORDERED_TAG; 4073 break; 4074 case ATIO_ACA_QUEUE: 4075 fcp_task_attr = TCM_ACA_TAG; 4076 break; 4077 case ATIO_UNTAGGED: 4078 fcp_task_attr = TCM_SIMPLE_TAG; 4079 break; 4080 default: 4081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4082 "qla_target: unknown task code %x, use ORDERED instead\n", 4083 task_codes); 4084 fcp_task_attr = TCM_ORDERED_TAG; 4085 break; 4086 } 4087 4088 return fcp_task_attr; 4089 } 4090 4091 /* 4092 * Process context for I/O path into tcm_qla2xxx code 4093 */ 4094 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4095 { 4096 scsi_qla_host_t *vha = cmd->vha; 4097 struct qla_hw_data *ha = vha->hw; 4098 struct fc_port *sess = cmd->sess; 4099 struct atio_from_isp *atio = &cmd->atio; 4100 unsigned char *cdb; 4101 unsigned long flags; 4102 uint32_t data_length; 4103 int ret, fcp_task_attr, data_dir, bidi = 0; 4104 struct qla_qpair *qpair = cmd->qpair; 4105 4106 cmd->cmd_in_wq = 0; 4107 cmd->trc_flags |= TRC_DO_WORK; 4108 4109 if (cmd->aborted) { 4110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4111 "cmd with tag %u is aborted\n", 4112 cmd->atio.u.isp24.exchange_addr); 4113 goto out_term; 4114 } 4115 4116 spin_lock_init(&cmd->cmd_lock); 4117 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4118 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4119 4120 if (atio->u.isp24.fcp_cmnd.rddata && 4121 atio->u.isp24.fcp_cmnd.wrdata) { 4122 bidi = 1; 4123 data_dir = DMA_TO_DEVICE; 4124 } else if (atio->u.isp24.fcp_cmnd.rddata) 4125 data_dir = DMA_FROM_DEVICE; 4126 else if (atio->u.isp24.fcp_cmnd.wrdata) 4127 data_dir = DMA_TO_DEVICE; 4128 else 4129 data_dir = DMA_NONE; 4130 4131 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4132 atio->u.isp24.fcp_cmnd.task_attr); 4133 data_length = get_datalen_for_atio(atio); 4134 4135 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4136 fcp_task_attr, data_dir, bidi); 4137 if (ret != 0) 4138 goto out_term; 4139 /* 4140 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4141 */ 4142 ha->tgt.tgt_ops->put_sess(sess); 4143 return; 4144 4145 out_term: 4146 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4147 /* 4148 * cmd has not sent to target yet, so pass NULL as the second 4149 * argument to qlt_send_term_exchange() and free the memory here. 4150 */ 4151 cmd->trc_flags |= TRC_DO_WORK_ERR; 4152 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4153 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4154 4155 qlt_decr_num_pend_cmds(vha); 4156 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4157 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4158 4159 ha->tgt.tgt_ops->put_sess(sess); 4160 } 4161 4162 static void qlt_do_work(struct work_struct *work) 4163 { 4164 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4165 scsi_qla_host_t *vha = cmd->vha; 4166 unsigned long flags; 4167 4168 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4169 list_del(&cmd->cmd_list); 4170 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4171 4172 __qlt_do_work(cmd); 4173 } 4174 4175 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4176 { 4177 unsigned long flags; 4178 struct qla_hw_data *ha = vha->hw; 4179 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4180 void *node; 4181 u64 key = 0; 4182 4183 ql_log(ql_log_info, vha, 0x706c, 4184 "User update Number of Active Qpairs %d\n", 4185 ha->tgt.num_act_qpairs); 4186 4187 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4188 4189 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4190 btree_remove64(&tgt->lun_qpair_map, key); 4191 4192 ha->base_qpair->lun_cnt = 0; 4193 for (key = 0; key < ha->max_qpairs; key++) 4194 if (ha->queue_pair_map[key]) 4195 ha->queue_pair_map[key]->lun_cnt = 0; 4196 4197 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4198 } 4199 4200 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4201 struct qla_tgt_cmd *cmd) 4202 { 4203 struct qla_qpair *qpair, *qp; 4204 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4205 struct qla_qpair_hint *h; 4206 4207 if (vha->flags.qpairs_available) { 4208 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4209 if (unlikely(!h)) { 4210 /* spread lun to qpair ratio evently */ 4211 int lcnt = 0, rc; 4212 struct scsi_qla_host *base_vha = 4213 pci_get_drvdata(vha->hw->pdev); 4214 4215 qpair = vha->hw->base_qpair; 4216 if (qpair->lun_cnt == 0) { 4217 qpair->lun_cnt++; 4218 h = qla_qpair_to_hint(tgt, qpair); 4219 BUG_ON(!h); 4220 rc = btree_insert64(&tgt->lun_qpair_map, 4221 cmd->unpacked_lun, h, GFP_ATOMIC); 4222 if (rc) { 4223 qpair->lun_cnt--; 4224 ql_log(ql_log_info, vha, 0xd037, 4225 "Unable to insert lun %llx into lun_qpair_map\n", 4226 cmd->unpacked_lun); 4227 } 4228 goto out; 4229 } else { 4230 lcnt = qpair->lun_cnt; 4231 } 4232 4233 h = NULL; 4234 list_for_each_entry(qp, &base_vha->qp_list, 4235 qp_list_elem) { 4236 if (qp->lun_cnt == 0) { 4237 qp->lun_cnt++; 4238 h = qla_qpair_to_hint(tgt, qp); 4239 BUG_ON(!h); 4240 rc = btree_insert64(&tgt->lun_qpair_map, 4241 cmd->unpacked_lun, h, GFP_ATOMIC); 4242 if (rc) { 4243 qp->lun_cnt--; 4244 ql_log(ql_log_info, vha, 0xd038, 4245 "Unable to insert lun %llx into lun_qpair_map\n", 4246 cmd->unpacked_lun); 4247 } 4248 qpair = qp; 4249 goto out; 4250 } else { 4251 if (qp->lun_cnt < lcnt) { 4252 lcnt = qp->lun_cnt; 4253 qpair = qp; 4254 continue; 4255 } 4256 } 4257 } 4258 BUG_ON(!qpair); 4259 qpair->lun_cnt++; 4260 h = qla_qpair_to_hint(tgt, qpair); 4261 BUG_ON(!h); 4262 rc = btree_insert64(&tgt->lun_qpair_map, 4263 cmd->unpacked_lun, h, GFP_ATOMIC); 4264 if (rc) { 4265 qpair->lun_cnt--; 4266 ql_log(ql_log_info, vha, 0xd039, 4267 "Unable to insert lun %llx into lun_qpair_map\n", 4268 cmd->unpacked_lun); 4269 } 4270 } 4271 } else { 4272 h = &tgt->qphints[0]; 4273 } 4274 out: 4275 cmd->qpair = h->qpair; 4276 cmd->se_cmd.cpuid = h->cpuid; 4277 } 4278 4279 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4280 struct fc_port *sess, 4281 struct atio_from_isp *atio) 4282 { 4283 struct qla_tgt_cmd *cmd; 4284 4285 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4286 if (!cmd) 4287 return NULL; 4288 4289 cmd->cmd_type = TYPE_TGT_CMD; 4290 memcpy(&cmd->atio, atio, sizeof(*atio)); 4291 cmd->state = QLA_TGT_STATE_NEW; 4292 cmd->tgt = vha->vha_tgt.qla_tgt; 4293 qlt_incr_num_pend_cmds(vha); 4294 cmd->vha = vha; 4295 cmd->sess = sess; 4296 cmd->loop_id = sess->loop_id; 4297 cmd->conf_compl_supported = sess->conf_compl_supported; 4298 4299 cmd->trc_flags = 0; 4300 cmd->jiffies_at_alloc = get_jiffies_64(); 4301 4302 cmd->unpacked_lun = scsilun_to_int( 4303 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4304 qlt_assign_qpair(vha, cmd); 4305 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4306 cmd->vp_idx = vha->vp_idx; 4307 4308 return cmd; 4309 } 4310 4311 /* ha->hardware_lock supposed to be held on entry */ 4312 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4313 struct atio_from_isp *atio) 4314 { 4315 struct qla_hw_data *ha = vha->hw; 4316 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4317 struct fc_port *sess; 4318 struct qla_tgt_cmd *cmd; 4319 unsigned long flags; 4320 port_id_t id; 4321 4322 if (unlikely(tgt->tgt_stop)) { 4323 ql_dbg(ql_dbg_io, vha, 0x3061, 4324 "New command while device %p is shutting down\n", tgt); 4325 return -ENODEV; 4326 } 4327 4328 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4329 if (IS_SW_RESV_ADDR(id)) 4330 return -EBUSY; 4331 4332 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4333 if (unlikely(!sess)) 4334 return -EFAULT; 4335 4336 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4337 * session deletion, but it's still in sess_del_work wq */ 4338 if (sess->deleted) { 4339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4340 "New command while old session %p is being deleted\n", 4341 sess); 4342 return -EFAULT; 4343 } 4344 4345 /* 4346 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4347 */ 4348 if (!kref_get_unless_zero(&sess->sess_kref)) { 4349 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4350 "%s: kref_get fail, %8phC oxid %x \n", 4351 __func__, sess->port_name, 4352 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4353 return -EFAULT; 4354 } 4355 4356 cmd = qlt_get_tag(vha, sess, atio); 4357 if (!cmd) { 4358 ql_dbg(ql_dbg_io, vha, 0x3062, 4359 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4360 ha->tgt.tgt_ops->put_sess(sess); 4361 return -EBUSY; 4362 } 4363 4364 cmd->cmd_in_wq = 1; 4365 cmd->trc_flags |= TRC_NEW_CMD; 4366 4367 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4368 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4369 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4370 4371 INIT_WORK(&cmd->work, qlt_do_work); 4372 if (vha->flags.qpairs_available) { 4373 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4374 } else if (ha->msix_count) { 4375 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4376 queue_work_on(smp_processor_id(), qla_tgt_wq, 4377 &cmd->work); 4378 else 4379 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4380 &cmd->work); 4381 } else { 4382 queue_work(qla_tgt_wq, &cmd->work); 4383 } 4384 4385 return 0; 4386 } 4387 4388 /* ha->hardware_lock supposed to be held on entry */ 4389 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4390 int fn, void *iocb, int flags) 4391 { 4392 struct scsi_qla_host *vha = sess->vha; 4393 struct qla_hw_data *ha = vha->hw; 4394 struct qla_tgt_mgmt_cmd *mcmd; 4395 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4396 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4397 4398 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4399 if (!mcmd) { 4400 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4401 "qla_target(%d): Allocation of management " 4402 "command failed, some commands and their data could " 4403 "leak\n", vha->vp_idx); 4404 return -ENOMEM; 4405 } 4406 memset(mcmd, 0, sizeof(*mcmd)); 4407 mcmd->sess = sess; 4408 4409 if (iocb) { 4410 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4411 sizeof(mcmd->orig_iocb.imm_ntfy)); 4412 } 4413 mcmd->tmr_func = fn; 4414 mcmd->flags = flags; 4415 mcmd->reset_count = ha->base_qpair->chip_reset; 4416 mcmd->qpair = h->qpair; 4417 mcmd->vha = vha; 4418 mcmd->se_cmd.cpuid = h->cpuid; 4419 mcmd->unpacked_lun = lun; 4420 4421 switch (fn) { 4422 case QLA_TGT_LUN_RESET: 4423 case QLA_TGT_CLEAR_TS: 4424 case QLA_TGT_ABORT_TS: 4425 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4426 fallthrough; 4427 case QLA_TGT_CLEAR_ACA: 4428 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4429 mcmd->qpair = h->qpair; 4430 mcmd->se_cmd.cpuid = h->cpuid; 4431 break; 4432 4433 case QLA_TGT_TARGET_RESET: 4434 case QLA_TGT_NEXUS_LOSS_SESS: 4435 case QLA_TGT_NEXUS_LOSS: 4436 case QLA_TGT_ABORT_ALL: 4437 default: 4438 /* no-op */ 4439 break; 4440 } 4441 4442 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4443 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4444 &mcmd->work); 4445 4446 return 0; 4447 } 4448 4449 /* ha->hardware_lock supposed to be held on entry */ 4450 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4451 { 4452 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4453 struct qla_hw_data *ha = vha->hw; 4454 struct fc_port *sess; 4455 u64 unpacked_lun; 4456 int fn; 4457 unsigned long flags; 4458 4459 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4460 4461 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4462 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4463 a->u.isp24.fcp_hdr.s_id); 4464 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4465 4466 unpacked_lun = 4467 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4468 4469 if (sess == NULL || sess->deleted) 4470 return -EFAULT; 4471 4472 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4473 } 4474 4475 /* ha->hardware_lock supposed to be held on entry */ 4476 static int __qlt_abort_task(struct scsi_qla_host *vha, 4477 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4478 { 4479 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4480 struct qla_hw_data *ha = vha->hw; 4481 struct qla_tgt_mgmt_cmd *mcmd; 4482 u64 unpacked_lun; 4483 int rc; 4484 4485 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4486 if (mcmd == NULL) { 4487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4488 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4489 vha->vp_idx, __func__); 4490 return -ENOMEM; 4491 } 4492 memset(mcmd, 0, sizeof(*mcmd)); 4493 4494 mcmd->sess = sess; 4495 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4496 sizeof(mcmd->orig_iocb.imm_ntfy)); 4497 4498 unpacked_lun = 4499 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4500 mcmd->reset_count = ha->base_qpair->chip_reset; 4501 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4502 mcmd->qpair = ha->base_qpair; 4503 4504 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4505 le16_to_cpu(iocb->u.isp2x.seq_id)); 4506 if (rc != 0) { 4507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4508 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4509 vha->vp_idx, rc); 4510 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4511 return -EFAULT; 4512 } 4513 4514 return 0; 4515 } 4516 4517 /* ha->hardware_lock supposed to be held on entry */ 4518 static int qlt_abort_task(struct scsi_qla_host *vha, 4519 struct imm_ntfy_from_isp *iocb) 4520 { 4521 struct qla_hw_data *ha = vha->hw; 4522 struct fc_port *sess; 4523 int loop_id; 4524 unsigned long flags; 4525 4526 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4527 4528 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4529 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4530 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4531 4532 if (sess == NULL) { 4533 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4534 "qla_target(%d): task abort for unexisting " 4535 "session\n", vha->vp_idx); 4536 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4537 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4538 } 4539 4540 return __qlt_abort_task(vha, iocb, sess); 4541 } 4542 4543 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4544 { 4545 if (rc != MBS_COMMAND_COMPLETE) { 4546 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4547 "%s: se_sess %p / sess %p from" 4548 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4549 " LOGO failed: %#x\n", 4550 __func__, 4551 fcport->se_sess, 4552 fcport, 4553 fcport->port_name, fcport->loop_id, 4554 fcport->d_id.b.domain, fcport->d_id.b.area, 4555 fcport->d_id.b.al_pa, rc); 4556 } 4557 4558 fcport->logout_completed = 1; 4559 } 4560 4561 /* 4562 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4563 * 4564 * Schedules sessions with matching port_id/loop_id but different wwn for 4565 * deletion. Returns existing session with matching wwn if present. 4566 * Null otherwise. 4567 */ 4568 struct fc_port * 4569 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4570 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4571 { 4572 struct fc_port *sess = NULL, *other_sess; 4573 uint64_t other_wwn; 4574 4575 *conflict_sess = NULL; 4576 4577 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4578 4579 other_wwn = wwn_to_u64(other_sess->port_name); 4580 4581 if (wwn == other_wwn) { 4582 WARN_ON(sess); 4583 sess = other_sess; 4584 continue; 4585 } 4586 4587 /* find other sess with nport_id collision */ 4588 if (port_id.b24 == other_sess->d_id.b24) { 4589 if (loop_id != other_sess->loop_id) { 4590 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4591 "Invalidating sess %p loop_id %d wwn %llx.\n", 4592 other_sess, other_sess->loop_id, other_wwn); 4593 4594 /* 4595 * logout_on_delete is set by default, but another 4596 * session that has the same s_id/loop_id combo 4597 * might have cleared it when requested this session 4598 * deletion, so don't touch it 4599 */ 4600 qlt_schedule_sess_for_deletion(other_sess); 4601 } else { 4602 /* 4603 * Another wwn used to have our s_id/loop_id 4604 * kill the session, but don't free the loop_id 4605 */ 4606 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4607 "Invalidating sess %p loop_id %d wwn %llx.\n", 4608 other_sess, other_sess->loop_id, other_wwn); 4609 4610 other_sess->keep_nport_handle = 1; 4611 if (other_sess->disc_state != DSC_DELETED) 4612 *conflict_sess = other_sess; 4613 qlt_schedule_sess_for_deletion(other_sess); 4614 } 4615 continue; 4616 } 4617 4618 /* find other sess with nport handle collision */ 4619 if ((loop_id == other_sess->loop_id) && 4620 (loop_id != FC_NO_LOOP_ID)) { 4621 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4622 "Invalidating sess %p loop_id %d wwn %llx.\n", 4623 other_sess, other_sess->loop_id, other_wwn); 4624 4625 /* Same loop_id but different s_id 4626 * Ok to kill and logout */ 4627 qlt_schedule_sess_for_deletion(other_sess); 4628 } 4629 } 4630 4631 return sess; 4632 } 4633 4634 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4635 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4636 { 4637 struct qla_tgt_sess_op *op; 4638 struct qla_tgt_cmd *cmd; 4639 uint32_t key; 4640 int count = 0; 4641 unsigned long flags; 4642 4643 key = (((u32)s_id->b.domain << 16) | 4644 ((u32)s_id->b.area << 8) | 4645 ((u32)s_id->b.al_pa)); 4646 4647 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4648 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4649 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4650 4651 if (op_key == key) { 4652 op->aborted = true; 4653 count++; 4654 } 4655 } 4656 4657 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4658 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4659 4660 if (op_key == key) { 4661 op->aborted = true; 4662 count++; 4663 } 4664 } 4665 4666 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4667 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4668 4669 if (cmd_key == key) { 4670 cmd->aborted = 1; 4671 count++; 4672 } 4673 } 4674 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4675 4676 return count; 4677 } 4678 4679 static int qlt_handle_login(struct scsi_qla_host *vha, 4680 struct imm_ntfy_from_isp *iocb) 4681 { 4682 struct fc_port *sess = NULL, *conflict_sess = NULL; 4683 uint64_t wwn; 4684 port_id_t port_id; 4685 uint16_t loop_id, wd3_lo; 4686 int res = 0; 4687 struct qlt_plogi_ack_t *pla; 4688 unsigned long flags; 4689 4690 lockdep_assert_held(&vha->hw->hardware_lock); 4691 4692 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4693 4694 port_id.b.domain = iocb->u.isp24.port_id[2]; 4695 port_id.b.area = iocb->u.isp24.port_id[1]; 4696 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4697 port_id.b.rsvd_1 = 0; 4698 4699 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4700 4701 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4702 abort_cmds_for_s_id(vha, &port_id); 4703 4704 if (wwn) { 4705 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4706 sess = qlt_find_sess_invalidate_other(vha, wwn, 4707 port_id, loop_id, &conflict_sess); 4708 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4709 } else { 4710 ql_dbg(ql_dbg_disc, vha, 0xffff, 4711 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4712 __func__, __LINE__, loop_id, port_id.b24); 4713 qlt_send_term_imm_notif(vha, iocb, 1); 4714 goto out; 4715 } 4716 4717 if (IS_SW_RESV_ADDR(port_id)) { 4718 res = 1; 4719 goto out; 4720 } 4721 4722 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4723 if (!pla) { 4724 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4725 "%s %d %8phC Term INOT due to mem alloc fail", 4726 __func__, __LINE__, 4727 iocb->u.isp24.port_name); 4728 qlt_send_term_imm_notif(vha, iocb, 1); 4729 goto out; 4730 } 4731 4732 if (conflict_sess) { 4733 conflict_sess->login_gen++; 4734 qlt_plogi_ack_link(vha, pla, conflict_sess, 4735 QLT_PLOGI_LINK_CONFLICT); 4736 } 4737 4738 if (!sess) { 4739 pla->ref_count++; 4740 ql_dbg(ql_dbg_disc, vha, 0xffff, 4741 "%s %d %8phC post new sess\n", 4742 __func__, __LINE__, iocb->u.isp24.port_name); 4743 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4744 qla24xx_post_newsess_work(vha, &port_id, 4745 iocb->u.isp24.port_name, 4746 iocb->u.isp24.u.plogi.node_name, 4747 pla, 0); 4748 else 4749 qla24xx_post_newsess_work(vha, &port_id, 4750 iocb->u.isp24.port_name, NULL, 4751 pla, 0); 4752 4753 goto out; 4754 } 4755 4756 if (sess->disc_state == DSC_UPD_FCPORT) { 4757 u16 sec; 4758 4759 /* 4760 * Remote port registration is still going on from 4761 * previous login. Allow it to finish before we 4762 * accept the new login. 4763 */ 4764 sess->next_disc_state = DSC_DELETE_PEND; 4765 sec = jiffies_to_msecs(jiffies - 4766 sess->jiffies_at_registration) / 1000; 4767 if (sess->sec_since_registration < sec && sec && 4768 !(sec % 5)) { 4769 sess->sec_since_registration = sec; 4770 ql_dbg(ql_dbg_disc, vha, 0xffff, 4771 "%s %8phC - Slow Rport registration (%d Sec)\n", 4772 __func__, sess->port_name, sec); 4773 } 4774 4775 if (!conflict_sess) { 4776 list_del(&pla->list); 4777 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4778 } 4779 4780 qlt_send_term_imm_notif(vha, iocb, 1); 4781 goto out; 4782 } 4783 4784 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4785 sess->d_id = port_id; 4786 sess->login_gen++; 4787 4788 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4789 sess->fw_login_state = DSC_LS_PRLI_PEND; 4790 sess->local = 0; 4791 sess->loop_id = loop_id; 4792 sess->d_id = port_id; 4793 sess->fw_login_state = DSC_LS_PRLI_PEND; 4794 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4795 4796 if (wd3_lo & BIT_7) 4797 sess->conf_compl_supported = 1; 4798 4799 if ((wd3_lo & BIT_4) == 0) 4800 sess->port_type = FCT_INITIATOR; 4801 else 4802 sess->port_type = FCT_TARGET; 4803 4804 } else 4805 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4806 4807 4808 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4809 "%s %d %8phC DS %d\n", 4810 __func__, __LINE__, sess->port_name, sess->disc_state); 4811 4812 switch (sess->disc_state) { 4813 case DSC_DELETED: 4814 case DSC_LOGIN_PEND: 4815 qlt_plogi_ack_unref(vha, pla); 4816 break; 4817 4818 default: 4819 /* 4820 * Under normal circumstances we want to release nport handle 4821 * during LOGO process to avoid nport handle leaks inside FW. 4822 * The exception is when LOGO is done while another PLOGI with 4823 * the same nport handle is waiting as might be the case here. 4824 * Note: there is always a possibily of a race where session 4825 * deletion has already started for other reasons (e.g. ACL 4826 * removal) and now PLOGI arrives: 4827 * 1. if PLOGI arrived in FW after nport handle has been freed, 4828 * FW must have assigned this PLOGI a new/same handle and we 4829 * can proceed ACK'ing it as usual when session deletion 4830 * completes. 4831 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4832 * bit reached it, the handle has now been released. We'll 4833 * get an error when we ACK this PLOGI. Nothing will be sent 4834 * back to initiator. Initiator should eventually retry 4835 * PLOGI and situation will correct itself. 4836 */ 4837 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4838 (sess->d_id.b24 == port_id.b24)); 4839 4840 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4841 "%s %d %8phC post del sess\n", 4842 __func__, __LINE__, sess->port_name); 4843 4844 4845 qlt_schedule_sess_for_deletion(sess); 4846 break; 4847 } 4848 out: 4849 return res; 4850 } 4851 4852 /* 4853 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4854 */ 4855 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4856 struct imm_ntfy_from_isp *iocb) 4857 { 4858 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4859 struct qla_hw_data *ha = vha->hw; 4860 struct fc_port *sess = NULL, *conflict_sess = NULL; 4861 uint64_t wwn; 4862 port_id_t port_id; 4863 uint16_t loop_id; 4864 uint16_t wd3_lo; 4865 int res = 0; 4866 unsigned long flags; 4867 4868 lockdep_assert_held(&ha->hardware_lock); 4869 4870 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4871 4872 port_id.b.domain = iocb->u.isp24.port_id[2]; 4873 port_id.b.area = iocb->u.isp24.port_id[1]; 4874 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4875 port_id.b.rsvd_1 = 0; 4876 4877 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4878 4879 ql_dbg(ql_dbg_disc, vha, 0xf026, 4880 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4881 vha->vp_idx, iocb->u.isp24.port_id[2], 4882 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4883 iocb->u.isp24.status_subcode, loop_id, 4884 iocb->u.isp24.port_name); 4885 4886 /* res = 1 means ack at the end of thread 4887 * res = 0 means ack async/later. 4888 */ 4889 switch (iocb->u.isp24.status_subcode) { 4890 case ELS_PLOGI: 4891 res = qlt_handle_login(vha, iocb); 4892 break; 4893 4894 case ELS_PRLI: 4895 if (N2N_TOPO(ha)) { 4896 sess = qla2x00_find_fcport_by_wwpn(vha, 4897 iocb->u.isp24.port_name, 1); 4898 4899 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4900 ql_dbg(ql_dbg_disc, vha, 0xffff, 4901 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4902 __func__, __LINE__, 4903 iocb->u.isp24.port_name); 4904 qlt_send_term_imm_notif(vha, iocb, 1); 4905 break; 4906 } 4907 4908 res = qlt_handle_login(vha, iocb); 4909 break; 4910 } 4911 4912 if (IS_SW_RESV_ADDR(port_id)) { 4913 res = 1; 4914 break; 4915 } 4916 4917 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4918 4919 if (wwn) { 4920 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4921 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4922 loop_id, &conflict_sess); 4923 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4924 } 4925 4926 if (conflict_sess) { 4927 switch (conflict_sess->disc_state) { 4928 case DSC_DELETED: 4929 case DSC_DELETE_PEND: 4930 break; 4931 default: 4932 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4933 "PRLI with conflicting sess %p port %8phC\n", 4934 conflict_sess, conflict_sess->port_name); 4935 conflict_sess->fw_login_state = 4936 DSC_LS_PORT_UNAVAIL; 4937 qlt_send_term_imm_notif(vha, iocb, 1); 4938 res = 0; 4939 break; 4940 } 4941 } 4942 4943 if (sess != NULL) { 4944 bool delete = false; 4945 int sec; 4946 4947 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4948 switch (sess->fw_login_state) { 4949 case DSC_LS_PLOGI_PEND: 4950 case DSC_LS_PLOGI_COMP: 4951 case DSC_LS_PRLI_COMP: 4952 break; 4953 default: 4954 delete = true; 4955 break; 4956 } 4957 4958 switch (sess->disc_state) { 4959 case DSC_UPD_FCPORT: 4960 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4961 flags); 4962 4963 sec = jiffies_to_msecs(jiffies - 4964 sess->jiffies_at_registration)/1000; 4965 if (sess->sec_since_registration < sec && sec && 4966 !(sec % 5)) { 4967 sess->sec_since_registration = sec; 4968 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4969 "%s %8phC : Slow Rport registration(%d Sec)\n", 4970 __func__, sess->port_name, sec); 4971 } 4972 qlt_send_term_imm_notif(vha, iocb, 1); 4973 return 0; 4974 4975 case DSC_LOGIN_PEND: 4976 case DSC_GPDB: 4977 case DSC_LOGIN_COMPLETE: 4978 case DSC_ADISC: 4979 delete = false; 4980 break; 4981 default: 4982 break; 4983 } 4984 4985 if (delete) { 4986 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4987 flags); 4988 /* 4989 * Impatient initiator sent PRLI before last 4990 * PLOGI could finish. Will force him to re-try, 4991 * while last one finishes. 4992 */ 4993 ql_log(ql_log_warn, sess->vha, 0xf095, 4994 "sess %p PRLI received, before plogi ack.\n", 4995 sess); 4996 qlt_send_term_imm_notif(vha, iocb, 1); 4997 res = 0; 4998 break; 4999 } 5000 5001 /* 5002 * This shouldn't happen under normal circumstances, 5003 * since we have deleted the old session during PLOGI 5004 */ 5005 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5006 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5007 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5008 5009 sess->local = 0; 5010 sess->loop_id = loop_id; 5011 sess->d_id = port_id; 5012 sess->fw_login_state = DSC_LS_PRLI_PEND; 5013 5014 if (wd3_lo & BIT_7) 5015 sess->conf_compl_supported = 1; 5016 5017 if ((wd3_lo & BIT_4) == 0) 5018 sess->port_type = FCT_INITIATOR; 5019 else 5020 sess->port_type = FCT_TARGET; 5021 5022 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5023 } 5024 res = 1; /* send notify ack */ 5025 5026 /* Make session global (not used in fabric mode) */ 5027 if (ha->current_topology != ISP_CFG_F) { 5028 if (sess) { 5029 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5030 "%s %d %8phC post nack\n", 5031 __func__, __LINE__, sess->port_name); 5032 qla24xx_post_nack_work(vha, sess, iocb, 5033 SRB_NACK_PRLI); 5034 res = 0; 5035 } else { 5036 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5037 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5038 qla2xxx_wake_dpc(vha); 5039 } 5040 } else { 5041 if (sess) { 5042 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5043 "%s %d %8phC post nack\n", 5044 __func__, __LINE__, sess->port_name); 5045 qla24xx_post_nack_work(vha, sess, iocb, 5046 SRB_NACK_PRLI); 5047 res = 0; 5048 } 5049 } 5050 break; 5051 5052 case ELS_TPRLO: 5053 if (le16_to_cpu(iocb->u.isp24.flags) & 5054 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5055 loop_id = 0xFFFF; 5056 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5057 res = 1; 5058 break; 5059 } 5060 fallthrough; 5061 case ELS_LOGO: 5062 case ELS_PRLO: 5063 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5064 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5065 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5066 5067 if (sess) { 5068 sess->login_gen++; 5069 sess->fw_login_state = DSC_LS_LOGO_PEND; 5070 sess->logo_ack_needed = 1; 5071 memcpy(sess->iocb, iocb, IOCB_SIZE); 5072 } 5073 5074 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5075 5076 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5077 "%s: logo %llx res %d sess %p ", 5078 __func__, wwn, res, sess); 5079 if (res == 0) { 5080 /* 5081 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5082 * for LOGO_ACK & sess delete 5083 */ 5084 BUG_ON(!sess); 5085 res = 0; 5086 } else { 5087 /* cmd did not go to upper layer. */ 5088 if (sess) { 5089 qlt_schedule_sess_for_deletion(sess); 5090 res = 0; 5091 } 5092 /* else logo will be ack */ 5093 } 5094 break; 5095 case ELS_PDISC: 5096 case ELS_ADISC: 5097 { 5098 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5099 5100 if (tgt->link_reinit_iocb_pending) { 5101 qlt_send_notify_ack(ha->base_qpair, 5102 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5103 tgt->link_reinit_iocb_pending = 0; 5104 } 5105 5106 sess = qla2x00_find_fcport_by_wwpn(vha, 5107 iocb->u.isp24.port_name, 1); 5108 if (sess) { 5109 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5110 "sess %p lid %d|%d DS %d LS %d\n", 5111 sess, sess->loop_id, loop_id, 5112 sess->disc_state, sess->fw_login_state); 5113 } 5114 5115 res = 1; /* send notify ack */ 5116 break; 5117 } 5118 5119 case ELS_FLOGI: /* should never happen */ 5120 default: 5121 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5122 "qla_target(%d): Unsupported ELS command %x " 5123 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5124 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5125 break; 5126 } 5127 5128 ql_dbg(ql_dbg_disc, vha, 0xf026, 5129 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5130 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5131 5132 return res; 5133 } 5134 5135 /* 5136 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5137 */ 5138 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5139 struct imm_ntfy_from_isp *iocb) 5140 { 5141 struct qla_hw_data *ha = vha->hw; 5142 uint32_t add_flags = 0; 5143 int send_notify_ack = 1; 5144 uint16_t status; 5145 5146 lockdep_assert_held(&ha->hardware_lock); 5147 5148 status = le16_to_cpu(iocb->u.isp2x.status); 5149 switch (status) { 5150 case IMM_NTFY_LIP_RESET: 5151 { 5152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5153 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5154 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5155 iocb->u.isp24.status_subcode); 5156 5157 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5158 send_notify_ack = 0; 5159 break; 5160 } 5161 5162 case IMM_NTFY_LIP_LINK_REINIT: 5163 { 5164 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5165 5166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5167 "qla_target(%d): LINK REINIT (loop %#x, " 5168 "subcode %x)\n", vha->vp_idx, 5169 le16_to_cpu(iocb->u.isp24.nport_handle), 5170 iocb->u.isp24.status_subcode); 5171 if (tgt->link_reinit_iocb_pending) { 5172 qlt_send_notify_ack(ha->base_qpair, 5173 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5174 } 5175 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5176 tgt->link_reinit_iocb_pending = 1; 5177 /* 5178 * QLogic requires to wait after LINK REINIT for possible 5179 * PDISC or ADISC ELS commands 5180 */ 5181 send_notify_ack = 0; 5182 break; 5183 } 5184 5185 case IMM_NTFY_PORT_LOGOUT: 5186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5187 "qla_target(%d): Port logout (loop " 5188 "%#x, subcode %x)\n", vha->vp_idx, 5189 le16_to_cpu(iocb->u.isp24.nport_handle), 5190 iocb->u.isp24.status_subcode); 5191 5192 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5193 send_notify_ack = 0; 5194 /* The sessions will be cleared in the callback, if needed */ 5195 break; 5196 5197 case IMM_NTFY_GLBL_TPRLO: 5198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5199 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5200 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5201 send_notify_ack = 0; 5202 /* The sessions will be cleared in the callback, if needed */ 5203 break; 5204 5205 case IMM_NTFY_PORT_CONFIG: 5206 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5207 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5208 status); 5209 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5210 send_notify_ack = 0; 5211 /* The sessions will be cleared in the callback, if needed */ 5212 break; 5213 5214 case IMM_NTFY_GLBL_LOGO: 5215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5216 "qla_target(%d): Link failure detected\n", 5217 vha->vp_idx); 5218 /* I_T nexus loss */ 5219 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5220 send_notify_ack = 0; 5221 break; 5222 5223 case IMM_NTFY_IOCB_OVERFLOW: 5224 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5225 "qla_target(%d): Cannot provide requested " 5226 "capability (IOCB overflowed the immediate notify " 5227 "resource count)\n", vha->vp_idx); 5228 break; 5229 5230 case IMM_NTFY_ABORT_TASK: 5231 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5232 "qla_target(%d): Abort Task (S %08x I %#x -> " 5233 "L %#x)\n", vha->vp_idx, 5234 le16_to_cpu(iocb->u.isp2x.seq_id), 5235 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5236 le16_to_cpu(iocb->u.isp2x.lun)); 5237 if (qlt_abort_task(vha, iocb) == 0) 5238 send_notify_ack = 0; 5239 break; 5240 5241 case IMM_NTFY_RESOURCE: 5242 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5243 "qla_target(%d): Out of resources, host %ld\n", 5244 vha->vp_idx, vha->host_no); 5245 break; 5246 5247 case IMM_NTFY_MSG_RX: 5248 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5249 "qla_target(%d): Immediate notify task %x\n", 5250 vha->vp_idx, iocb->u.isp2x.task_flags); 5251 break; 5252 5253 case IMM_NTFY_ELS: 5254 if (qlt_24xx_handle_els(vha, iocb) == 0) 5255 send_notify_ack = 0; 5256 break; 5257 default: 5258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5259 "qla_target(%d): Received unknown immediate " 5260 "notify status %x\n", vha->vp_idx, status); 5261 break; 5262 } 5263 5264 if (send_notify_ack) 5265 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5266 0, 0); 5267 } 5268 5269 /* 5270 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5271 * This function sends busy to ISP 2xxx or 24xx. 5272 */ 5273 static int __qlt_send_busy(struct qla_qpair *qpair, 5274 struct atio_from_isp *atio, uint16_t status) 5275 { 5276 struct scsi_qla_host *vha = qpair->vha; 5277 struct ctio7_to_24xx *ctio24; 5278 struct qla_hw_data *ha = vha->hw; 5279 request_t *pkt; 5280 struct fc_port *sess = NULL; 5281 unsigned long flags; 5282 u16 temp; 5283 port_id_t id; 5284 5285 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5286 5287 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5288 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5290 if (!sess) { 5291 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5292 return 0; 5293 } 5294 /* Sending marker isn't necessary, since we called from ISR */ 5295 5296 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5297 if (!pkt) { 5298 ql_dbg(ql_dbg_io, vha, 0x3063, 5299 "qla_target(%d): %s failed: unable to allocate " 5300 "request packet", vha->vp_idx, __func__); 5301 return -ENOMEM; 5302 } 5303 5304 qpair->tgt_counters.num_q_full_sent++; 5305 pkt->entry_count = 1; 5306 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5307 5308 ctio24 = (struct ctio7_to_24xx *)pkt; 5309 ctio24->entry_type = CTIO_TYPE7; 5310 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5311 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5312 ctio24->vp_index = vha->vp_idx; 5313 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5314 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5315 temp = (atio->u.isp24.attr << 9) | 5316 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5317 CTIO7_FLAGS_DONT_RET_CTIO; 5318 ctio24->u.status1.flags = cpu_to_le16(temp); 5319 /* 5320 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5321 * if the explicit conformation is used. 5322 */ 5323 ctio24->u.status1.ox_id = 5324 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5325 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5326 5327 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5328 5329 if (ctio24->u.status1.residual != 0) 5330 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5331 5332 /* Memory Barrier */ 5333 wmb(); 5334 if (qpair->reqq_start_iocbs) 5335 qpair->reqq_start_iocbs(qpair); 5336 else 5337 qla2x00_start_iocbs(vha, qpair->req); 5338 return 0; 5339 } 5340 5341 /* 5342 * This routine is used to allocate a command for either a QFull condition 5343 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5344 * out previously. 5345 */ 5346 static void 5347 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5348 struct atio_from_isp *atio, uint16_t status, int qfull) 5349 { 5350 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5351 struct qla_hw_data *ha = vha->hw; 5352 struct fc_port *sess; 5353 struct qla_tgt_cmd *cmd; 5354 unsigned long flags; 5355 5356 if (unlikely(tgt->tgt_stop)) { 5357 ql_dbg(ql_dbg_io, vha, 0x300a, 5358 "New command while device %p is shutting down\n", tgt); 5359 return; 5360 } 5361 5362 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5363 vha->hw->tgt.num_qfull_cmds_dropped++; 5364 if (vha->hw->tgt.num_qfull_cmds_dropped > 5365 vha->qla_stats.stat_max_qfull_cmds_dropped) 5366 vha->qla_stats.stat_max_qfull_cmds_dropped = 5367 vha->hw->tgt.num_qfull_cmds_dropped; 5368 5369 ql_dbg(ql_dbg_io, vha, 0x3068, 5370 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5371 vha->vp_idx, __func__, 5372 vha->hw->tgt.num_qfull_cmds_dropped); 5373 5374 qlt_chk_exch_leak_thresh_hold(vha); 5375 return; 5376 } 5377 5378 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5379 (vha, atio->u.isp24.fcp_hdr.s_id); 5380 if (!sess) 5381 return; 5382 5383 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5384 if (!cmd) { 5385 ql_dbg(ql_dbg_io, vha, 0x3009, 5386 "qla_target(%d): %s: Allocation of cmd failed\n", 5387 vha->vp_idx, __func__); 5388 5389 vha->hw->tgt.num_qfull_cmds_dropped++; 5390 if (vha->hw->tgt.num_qfull_cmds_dropped > 5391 vha->qla_stats.stat_max_qfull_cmds_dropped) 5392 vha->qla_stats.stat_max_qfull_cmds_dropped = 5393 vha->hw->tgt.num_qfull_cmds_dropped; 5394 5395 qlt_chk_exch_leak_thresh_hold(vha); 5396 return; 5397 } 5398 5399 qlt_incr_num_pend_cmds(vha); 5400 INIT_LIST_HEAD(&cmd->cmd_list); 5401 memcpy(&cmd->atio, atio, sizeof(*atio)); 5402 5403 cmd->tgt = vha->vha_tgt.qla_tgt; 5404 cmd->vha = vha; 5405 cmd->reset_count = ha->base_qpair->chip_reset; 5406 cmd->q_full = 1; 5407 cmd->qpair = ha->base_qpair; 5408 5409 if (qfull) { 5410 cmd->q_full = 1; 5411 /* NOTE: borrowing the state field to carry the status */ 5412 cmd->state = status; 5413 } else 5414 cmd->term_exchg = 1; 5415 5416 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5417 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5418 5419 vha->hw->tgt.num_qfull_cmds_alloc++; 5420 if (vha->hw->tgt.num_qfull_cmds_alloc > 5421 vha->qla_stats.stat_max_qfull_cmds_alloc) 5422 vha->qla_stats.stat_max_qfull_cmds_alloc = 5423 vha->hw->tgt.num_qfull_cmds_alloc; 5424 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5425 } 5426 5427 int 5428 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5429 { 5430 struct scsi_qla_host *vha = qpair->vha; 5431 struct qla_hw_data *ha = vha->hw; 5432 unsigned long flags; 5433 struct qla_tgt_cmd *cmd, *tcmd; 5434 struct list_head free_list, q_full_list; 5435 int rc = 0; 5436 5437 if (list_empty(&ha->tgt.q_full_list)) 5438 return 0; 5439 5440 INIT_LIST_HEAD(&free_list); 5441 INIT_LIST_HEAD(&q_full_list); 5442 5443 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5444 if (list_empty(&ha->tgt.q_full_list)) { 5445 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5446 return 0; 5447 } 5448 5449 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5450 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5451 5452 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5453 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5454 if (cmd->q_full) 5455 /* cmd->state is a borrowed field to hold status */ 5456 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5457 else if (cmd->term_exchg) 5458 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5459 5460 if (rc == -ENOMEM) 5461 break; 5462 5463 if (cmd->q_full) 5464 ql_dbg(ql_dbg_io, vha, 0x3006, 5465 "%s: busy sent for ox_id[%04x]\n", __func__, 5466 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5467 else if (cmd->term_exchg) 5468 ql_dbg(ql_dbg_io, vha, 0x3007, 5469 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5470 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5471 else 5472 ql_dbg(ql_dbg_io, vha, 0x3008, 5473 "%s: Unexpected cmd in QFull list %p\n", __func__, 5474 cmd); 5475 5476 list_del(&cmd->cmd_list); 5477 list_add_tail(&cmd->cmd_list, &free_list); 5478 5479 /* piggy back on hardware_lock for protection */ 5480 vha->hw->tgt.num_qfull_cmds_alloc--; 5481 } 5482 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5483 5484 cmd = NULL; 5485 5486 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5487 list_del(&cmd->cmd_list); 5488 /* This cmd was never sent to TCM. There is no need 5489 * to schedule free or call free_cmd 5490 */ 5491 qlt_free_cmd(cmd); 5492 } 5493 5494 if (!list_empty(&q_full_list)) { 5495 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5496 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5497 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5498 } 5499 5500 return rc; 5501 } 5502 5503 static void 5504 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5505 uint16_t status) 5506 { 5507 int rc = 0; 5508 struct scsi_qla_host *vha = qpair->vha; 5509 5510 rc = __qlt_send_busy(qpair, atio, status); 5511 if (rc == -ENOMEM) 5512 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5513 } 5514 5515 static int 5516 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5517 struct atio_from_isp *atio, uint8_t ha_locked) 5518 { 5519 struct qla_hw_data *ha = vha->hw; 5520 unsigned long flags; 5521 5522 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5523 return 0; 5524 5525 if (!ha_locked) 5526 spin_lock_irqsave(&ha->hardware_lock, flags); 5527 qlt_send_busy(qpair, atio, qla_sam_status); 5528 if (!ha_locked) 5529 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5530 5531 return 1; 5532 } 5533 5534 /* ha->hardware_lock supposed to be held on entry */ 5535 /* called via callback from qla2xxx */ 5536 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5537 struct atio_from_isp *atio, uint8_t ha_locked) 5538 { 5539 struct qla_hw_data *ha = vha->hw; 5540 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5541 int rc; 5542 unsigned long flags = 0; 5543 5544 if (unlikely(tgt == NULL)) { 5545 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5546 "ATIO pkt, but no tgt (ha %p)", ha); 5547 return; 5548 } 5549 /* 5550 * In tgt_stop mode we also should allow all requests to pass. 5551 * Otherwise, some commands can stuck. 5552 */ 5553 5554 tgt->atio_irq_cmd_count++; 5555 5556 switch (atio->u.raw.entry_type) { 5557 case ATIO_TYPE7: 5558 if (unlikely(atio->u.isp24.exchange_addr == 5559 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5560 ql_dbg(ql_dbg_io, vha, 0x3065, 5561 "qla_target(%d): ATIO_TYPE7 " 5562 "received with UNKNOWN exchange address, " 5563 "sending QUEUE_FULL\n", vha->vp_idx); 5564 if (!ha_locked) 5565 spin_lock_irqsave(&ha->hardware_lock, flags); 5566 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5567 if (!ha_locked) 5568 spin_unlock_irqrestore(&ha->hardware_lock, 5569 flags); 5570 break; 5571 } 5572 5573 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5574 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5575 atio, ha_locked); 5576 if (rc != 0) { 5577 tgt->atio_irq_cmd_count--; 5578 return; 5579 } 5580 rc = qlt_handle_cmd_for_atio(vha, atio); 5581 } else { 5582 rc = qlt_handle_task_mgmt(vha, atio); 5583 } 5584 if (unlikely(rc != 0)) { 5585 if (!ha_locked) 5586 spin_lock_irqsave(&ha->hardware_lock, flags); 5587 switch (rc) { 5588 case -ENODEV: 5589 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5590 "qla_target: Unable to send command to target\n"); 5591 break; 5592 case -EBADF: 5593 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5594 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5595 qlt_send_term_exchange(ha->base_qpair, NULL, 5596 atio, 1, 0); 5597 break; 5598 case -EBUSY: 5599 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5600 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5601 vha->vp_idx); 5602 qlt_send_busy(ha->base_qpair, atio, 5603 tc_sam_status); 5604 break; 5605 default: 5606 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5607 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5608 vha->vp_idx); 5609 qlt_send_busy(ha->base_qpair, atio, 5610 qla_sam_status); 5611 break; 5612 } 5613 if (!ha_locked) 5614 spin_unlock_irqrestore(&ha->hardware_lock, 5615 flags); 5616 } 5617 break; 5618 5619 case IMMED_NOTIFY_TYPE: 5620 { 5621 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5622 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5623 "qla_target(%d): Received ATIO packet %x " 5624 "with error status %x\n", vha->vp_idx, 5625 atio->u.raw.entry_type, 5626 atio->u.isp2x.entry_status); 5627 break; 5628 } 5629 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5630 5631 if (!ha_locked) 5632 spin_lock_irqsave(&ha->hardware_lock, flags); 5633 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5634 if (!ha_locked) 5635 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5636 break; 5637 } 5638 5639 default: 5640 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5641 "qla_target(%d): Received unknown ATIO atio " 5642 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5643 break; 5644 } 5645 5646 tgt->atio_irq_cmd_count--; 5647 } 5648 5649 /* 5650 * qpair lock is assume to be held 5651 * rc = 0 : send terminate & abts respond 5652 * rc != 0: do not send term & abts respond 5653 */ 5654 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5655 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5656 { 5657 struct qla_hw_data *ha = vha->hw; 5658 int rc = 0; 5659 5660 /* 5661 * Detect unresolved exchange. If the same ABTS is unable 5662 * to terminate an existing command and the same ABTS loops 5663 * between FW & Driver, then force FW dump. Under 1 jiff, 5664 * we should see multiple loops. 5665 */ 5666 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5667 qpair->retry_term_jiff == jiffies) { 5668 /* found existing exchange */ 5669 qpair->retry_term_cnt++; 5670 if (qpair->retry_term_cnt >= 5) { 5671 rc = EIO; 5672 qpair->retry_term_cnt = 0; 5673 ql_log(ql_log_warn, vha, 0xffff, 5674 "Unable to send ABTS Respond. Dumping firmware.\n"); 5675 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5676 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5677 5678 if (qpair == ha->base_qpair) 5679 ha->isp_ops->fw_dump(vha); 5680 else 5681 qla2xxx_dump_fw(vha); 5682 5683 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5684 qla2xxx_wake_dpc(vha); 5685 } 5686 } else if (qpair->retry_term_jiff != jiffies) { 5687 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5688 qpair->retry_term_cnt = 0; 5689 qpair->retry_term_jiff = jiffies; 5690 } 5691 5692 return rc; 5693 } 5694 5695 5696 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5697 struct rsp_que *rsp, response_t *pkt) 5698 { 5699 struct abts_resp_from_24xx_fw *entry = 5700 (struct abts_resp_from_24xx_fw *)pkt; 5701 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5702 struct qla_tgt_mgmt_cmd *mcmd; 5703 struct qla_hw_data *ha = vha->hw; 5704 5705 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5706 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5707 ql_dbg(ql_dbg_async, vha, 0xe064, 5708 "qla_target(%d): ABTS Comp without mcmd\n", 5709 vha->vp_idx); 5710 return; 5711 } 5712 5713 if (mcmd) 5714 vha = mcmd->vha; 5715 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5716 5717 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5718 "ABTS_RESP_24XX: compl_status %x\n", 5719 entry->compl_status); 5720 5721 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5722 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5723 le32_to_cpu(entry->error_subcode2) == 0) { 5724 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5725 ha->tgt.tgt_ops->free_mcmd(mcmd); 5726 return; 5727 } 5728 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5729 pkt, mcmd); 5730 } else { 5731 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5732 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5733 vha->vp_idx, entry->compl_status, 5734 entry->error_subcode1, 5735 entry->error_subcode2); 5736 ha->tgt.tgt_ops->free_mcmd(mcmd); 5737 } 5738 } else if (mcmd) { 5739 ha->tgt.tgt_ops->free_mcmd(mcmd); 5740 } 5741 } 5742 5743 /* ha->hardware_lock supposed to be held on entry */ 5744 /* called via callback from qla2xxx */ 5745 static void qlt_response_pkt(struct scsi_qla_host *vha, 5746 struct rsp_que *rsp, response_t *pkt) 5747 { 5748 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5749 5750 if (unlikely(tgt == NULL)) { 5751 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5752 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5753 vha->vp_idx, pkt->entry_type, vha->hw); 5754 return; 5755 } 5756 5757 /* 5758 * In tgt_stop mode we also should allow all requests to pass. 5759 * Otherwise, some commands can stuck. 5760 */ 5761 5762 switch (pkt->entry_type) { 5763 case CTIO_CRC2: 5764 case CTIO_TYPE7: 5765 { 5766 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5767 5768 qlt_do_ctio_completion(vha, rsp, entry->handle, 5769 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5770 entry); 5771 break; 5772 } 5773 5774 case ACCEPT_TGT_IO_TYPE: 5775 { 5776 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5777 int rc; 5778 5779 if (atio->u.isp2x.status != 5780 cpu_to_le16(ATIO_CDB_VALID)) { 5781 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5782 "qla_target(%d): ATIO with error " 5783 "status %x received\n", vha->vp_idx, 5784 le16_to_cpu(atio->u.isp2x.status)); 5785 break; 5786 } 5787 5788 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5789 if (rc != 0) 5790 return; 5791 5792 rc = qlt_handle_cmd_for_atio(vha, atio); 5793 if (unlikely(rc != 0)) { 5794 switch (rc) { 5795 case -ENODEV: 5796 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5797 "qla_target: Unable to send command to target\n"); 5798 break; 5799 case -EBADF: 5800 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5801 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5802 qlt_send_term_exchange(rsp->qpair, NULL, 5803 atio, 1, 0); 5804 break; 5805 case -EBUSY: 5806 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5807 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5808 vha->vp_idx); 5809 qlt_send_busy(rsp->qpair, atio, 5810 tc_sam_status); 5811 break; 5812 default: 5813 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5814 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5815 vha->vp_idx); 5816 qlt_send_busy(rsp->qpair, atio, 5817 qla_sam_status); 5818 break; 5819 } 5820 } 5821 } 5822 break; 5823 5824 case CONTINUE_TGT_IO_TYPE: 5825 { 5826 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5827 5828 qlt_do_ctio_completion(vha, rsp, entry->handle, 5829 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5830 entry); 5831 break; 5832 } 5833 5834 case CTIO_A64_TYPE: 5835 { 5836 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5837 5838 qlt_do_ctio_completion(vha, rsp, entry->handle, 5839 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5840 entry); 5841 break; 5842 } 5843 5844 case IMMED_NOTIFY_TYPE: 5845 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5846 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5847 break; 5848 5849 case NOTIFY_ACK_TYPE: 5850 if (tgt->notify_ack_expected > 0) { 5851 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5852 5853 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5854 "NOTIFY_ACK seq %08x status %x\n", 5855 le16_to_cpu(entry->u.isp2x.seq_id), 5856 le16_to_cpu(entry->u.isp2x.status)); 5857 tgt->notify_ack_expected--; 5858 if (entry->u.isp2x.status != 5859 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5860 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5861 "qla_target(%d): NOTIFY_ACK " 5862 "failed %x\n", vha->vp_idx, 5863 le16_to_cpu(entry->u.isp2x.status)); 5864 } 5865 } else { 5866 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5867 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5868 vha->vp_idx); 5869 } 5870 break; 5871 5872 case ABTS_RECV_24XX: 5873 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5874 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5875 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5876 break; 5877 5878 case ABTS_RESP_24XX: 5879 if (tgt->abts_resp_expected > 0) { 5880 qlt_handle_abts_completion(vha, rsp, pkt); 5881 } else { 5882 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5883 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5884 "received\n", vha->vp_idx); 5885 } 5886 break; 5887 5888 default: 5889 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5890 "qla_target(%d): Received unknown response pkt " 5891 "type %x\n", vha->vp_idx, pkt->entry_type); 5892 break; 5893 } 5894 5895 } 5896 5897 /* 5898 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5899 */ 5900 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5901 uint16_t *mailbox) 5902 { 5903 struct qla_hw_data *ha = vha->hw; 5904 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5905 int login_code; 5906 5907 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5908 return; 5909 5910 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5911 IS_QLA2100(ha)) 5912 return; 5913 /* 5914 * In tgt_stop mode we also should allow all requests to pass. 5915 * Otherwise, some commands can stuck. 5916 */ 5917 5918 5919 switch (code) { 5920 case MBA_RESET: /* Reset */ 5921 case MBA_SYSTEM_ERR: /* System Error */ 5922 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5923 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5924 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5925 "qla_target(%d): System error async event %#x " 5926 "occurred", vha->vp_idx, code); 5927 break; 5928 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5929 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5930 break; 5931 5932 case MBA_LOOP_UP: 5933 { 5934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5935 "qla_target(%d): Async LOOP_UP occurred " 5936 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5937 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5938 if (tgt->link_reinit_iocb_pending) { 5939 qlt_send_notify_ack(ha->base_qpair, 5940 &tgt->link_reinit_iocb, 5941 0, 0, 0, 0, 0, 0); 5942 tgt->link_reinit_iocb_pending = 0; 5943 } 5944 break; 5945 } 5946 5947 case MBA_LIP_OCCURRED: 5948 case MBA_LOOP_DOWN: 5949 case MBA_LIP_RESET: 5950 case MBA_RSCN_UPDATE: 5951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5952 "qla_target(%d): Async event %#x occurred " 5953 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5954 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5955 break; 5956 5957 case MBA_REJECTED_FCP_CMD: 5958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5959 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5960 vha->vp_idx, 5961 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5962 5963 if (mailbox[3] == 1) { 5964 /* exchange starvation. */ 5965 vha->hw->exch_starvation++; 5966 if (vha->hw->exch_starvation > 5) { 5967 ql_log(ql_log_warn, vha, 0xd03a, 5968 "Exchange starvation-. Resetting RISC\n"); 5969 5970 vha->hw->exch_starvation = 0; 5971 if (IS_P3P_TYPE(vha->hw)) 5972 set_bit(FCOE_CTX_RESET_NEEDED, 5973 &vha->dpc_flags); 5974 else 5975 set_bit(ISP_ABORT_NEEDED, 5976 &vha->dpc_flags); 5977 qla2xxx_wake_dpc(vha); 5978 } 5979 } 5980 break; 5981 5982 case MBA_PORT_UPDATE: 5983 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5984 "qla_target(%d): Port update async event %#x " 5985 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5986 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5987 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5988 5989 login_code = mailbox[2]; 5990 if (login_code == 0x4) { 5991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5992 "Async MB 2: Got PLOGI Complete\n"); 5993 vha->hw->exch_starvation = 0; 5994 } else if (login_code == 0x7) 5995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5996 "Async MB 2: Port Logged Out\n"); 5997 break; 5998 default: 5999 break; 6000 } 6001 6002 } 6003 6004 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6005 uint16_t loop_id) 6006 { 6007 fc_port_t *fcport, *tfcp, *del; 6008 int rc; 6009 unsigned long flags; 6010 u8 newfcport = 0; 6011 6012 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6013 if (!fcport) { 6014 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6015 "qla_target(%d): Allocation of tmp FC port failed", 6016 vha->vp_idx); 6017 return NULL; 6018 } 6019 6020 fcport->loop_id = loop_id; 6021 6022 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6023 if (rc != QLA_SUCCESS) { 6024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6025 "qla_target(%d): Failed to retrieve fcport " 6026 "information -- get_port_database() returned %x " 6027 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6028 kfree(fcport); 6029 return NULL; 6030 } 6031 6032 del = NULL; 6033 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6034 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6035 6036 if (tfcp) { 6037 tfcp->d_id = fcport->d_id; 6038 tfcp->port_type = fcport->port_type; 6039 tfcp->supported_classes = fcport->supported_classes; 6040 tfcp->flags |= fcport->flags; 6041 tfcp->scan_state = QLA_FCPORT_FOUND; 6042 6043 del = fcport; 6044 fcport = tfcp; 6045 } else { 6046 if (vha->hw->current_topology == ISP_CFG_F) 6047 fcport->flags |= FCF_FABRIC_DEVICE; 6048 6049 list_add_tail(&fcport->list, &vha->vp_fcports); 6050 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6051 vha->fcport_count++; 6052 fcport->login_gen++; 6053 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6054 fcport->login_succ = 1; 6055 newfcport = 1; 6056 } 6057 6058 fcport->deleted = 0; 6059 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6060 6061 switch (vha->host->active_mode) { 6062 case MODE_INITIATOR: 6063 case MODE_DUAL: 6064 if (newfcport) { 6065 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6066 qla24xx_sched_upd_fcport(fcport); 6067 } else { 6068 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6069 "%s %d %8phC post gpsc fcp_cnt %d\n", 6070 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6071 qla24xx_post_gpsc_work(vha, fcport); 6072 } 6073 } 6074 break; 6075 6076 case MODE_TARGET: 6077 default: 6078 break; 6079 } 6080 if (del) 6081 qla2x00_free_fcport(del); 6082 6083 return fcport; 6084 } 6085 6086 /* Must be called under tgt_mutex */ 6087 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6088 be_id_t s_id) 6089 { 6090 struct fc_port *sess = NULL; 6091 fc_port_t *fcport = NULL; 6092 int rc, global_resets; 6093 uint16_t loop_id = 0; 6094 6095 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6096 /* 6097 * This is Domain Controller, so it should be 6098 * OK to drop SCSI commands from it. 6099 */ 6100 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6101 "Unable to find initiator with S_ID %x:%x:%x", 6102 s_id.domain, s_id.area, s_id.al_pa); 6103 return NULL; 6104 } 6105 6106 mutex_lock(&vha->vha_tgt.tgt_mutex); 6107 6108 retry: 6109 global_resets = 6110 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6111 6112 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6113 if (rc != 0) { 6114 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6115 6116 ql_log(ql_log_info, vha, 0xf071, 6117 "qla_target(%d): Unable to find " 6118 "initiator with S_ID %x:%x:%x", 6119 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6120 6121 if (rc == -ENOENT) { 6122 qlt_port_logo_t logo; 6123 6124 logo.id = be_to_port_id(s_id); 6125 logo.cmd_count = 1; 6126 qlt_send_first_logo(vha, &logo); 6127 } 6128 6129 return NULL; 6130 } 6131 6132 fcport = qlt_get_port_database(vha, loop_id); 6133 if (!fcport) { 6134 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6135 return NULL; 6136 } 6137 6138 if (global_resets != 6139 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6141 "qla_target(%d): global reset during session discovery " 6142 "(counter was %d, new %d), retrying", vha->vp_idx, 6143 global_resets, 6144 atomic_read(&vha->vha_tgt. 6145 qla_tgt->tgt_global_resets_count)); 6146 goto retry; 6147 } 6148 6149 sess = qlt_create_sess(vha, fcport, true); 6150 6151 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6152 6153 return sess; 6154 } 6155 6156 static void qlt_abort_work(struct qla_tgt *tgt, 6157 struct qla_tgt_sess_work_param *prm) 6158 { 6159 struct scsi_qla_host *vha = tgt->vha; 6160 struct qla_hw_data *ha = vha->hw; 6161 struct fc_port *sess = NULL; 6162 unsigned long flags = 0, flags2 = 0; 6163 be_id_t s_id; 6164 int rc; 6165 6166 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6167 6168 if (tgt->tgt_stop) 6169 goto out_term2; 6170 6171 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6172 6173 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6174 if (!sess) { 6175 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6176 6177 sess = qlt_make_local_sess(vha, s_id); 6178 /* sess has got an extra creation ref */ 6179 6180 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6181 if (!sess) 6182 goto out_term2; 6183 } else { 6184 if (sess->deleted) { 6185 sess = NULL; 6186 goto out_term2; 6187 } 6188 6189 if (!kref_get_unless_zero(&sess->sess_kref)) { 6190 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6191 "%s: kref_get fail %8phC \n", 6192 __func__, sess->port_name); 6193 sess = NULL; 6194 goto out_term2; 6195 } 6196 } 6197 6198 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6200 6201 ha->tgt.tgt_ops->put_sess(sess); 6202 6203 if (rc != 0) 6204 goto out_term; 6205 return; 6206 6207 out_term2: 6208 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6209 6210 out_term: 6211 spin_lock_irqsave(&ha->hardware_lock, flags); 6212 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6213 FCP_TMF_REJECTED, false); 6214 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6215 } 6216 6217 static void qlt_tmr_work(struct qla_tgt *tgt, 6218 struct qla_tgt_sess_work_param *prm) 6219 { 6220 struct atio_from_isp *a = &prm->tm_iocb2; 6221 struct scsi_qla_host *vha = tgt->vha; 6222 struct qla_hw_data *ha = vha->hw; 6223 struct fc_port *sess; 6224 unsigned long flags; 6225 be_id_t s_id; 6226 int rc; 6227 u64 unpacked_lun; 6228 int fn; 6229 void *iocb; 6230 6231 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6232 6233 if (tgt->tgt_stop) 6234 goto out_term2; 6235 6236 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6237 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6238 if (!sess) { 6239 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6240 6241 sess = qlt_make_local_sess(vha, s_id); 6242 /* sess has got an extra creation ref */ 6243 6244 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6245 if (!sess) 6246 goto out_term2; 6247 } else { 6248 if (sess->deleted) { 6249 goto out_term2; 6250 } 6251 6252 if (!kref_get_unless_zero(&sess->sess_kref)) { 6253 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6254 "%s: kref_get fail %8phC\n", 6255 __func__, sess->port_name); 6256 goto out_term2; 6257 } 6258 } 6259 6260 iocb = a; 6261 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6262 unpacked_lun = 6263 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6264 6265 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6266 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6267 6268 ha->tgt.tgt_ops->put_sess(sess); 6269 6270 if (rc != 0) 6271 goto out_term; 6272 return; 6273 6274 out_term2: 6275 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6276 out_term: 6277 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6278 } 6279 6280 static void qlt_sess_work_fn(struct work_struct *work) 6281 { 6282 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6283 struct scsi_qla_host *vha = tgt->vha; 6284 unsigned long flags; 6285 6286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6287 6288 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6289 while (!list_empty(&tgt->sess_works_list)) { 6290 struct qla_tgt_sess_work_param *prm = list_entry( 6291 tgt->sess_works_list.next, typeof(*prm), 6292 sess_works_list_entry); 6293 6294 /* 6295 * This work can be scheduled on several CPUs at time, so we 6296 * must delete the entry to eliminate double processing 6297 */ 6298 list_del(&prm->sess_works_list_entry); 6299 6300 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6301 6302 switch (prm->type) { 6303 case QLA_TGT_SESS_WORK_ABORT: 6304 qlt_abort_work(tgt, prm); 6305 break; 6306 case QLA_TGT_SESS_WORK_TM: 6307 qlt_tmr_work(tgt, prm); 6308 break; 6309 default: 6310 BUG_ON(1); 6311 break; 6312 } 6313 6314 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6315 6316 kfree(prm); 6317 } 6318 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6319 } 6320 6321 /* Must be called under tgt_host_action_mutex */ 6322 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6323 { 6324 struct qla_tgt *tgt; 6325 int rc, i; 6326 struct qla_qpair_hint *h; 6327 6328 if (!QLA_TGT_MODE_ENABLED()) 6329 return 0; 6330 6331 if (!IS_TGT_MODE_CAPABLE(ha)) { 6332 ql_log(ql_log_warn, base_vha, 0xe070, 6333 "This adapter does not support target mode.\n"); 6334 return 0; 6335 } 6336 6337 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6338 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6339 6340 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6341 6342 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6343 if (!tgt) { 6344 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6345 "Unable to allocate struct qla_tgt\n"); 6346 return -ENOMEM; 6347 } 6348 6349 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6350 sizeof(struct qla_qpair_hint), 6351 GFP_KERNEL); 6352 if (!tgt->qphints) { 6353 kfree(tgt); 6354 ql_log(ql_log_warn, base_vha, 0x0197, 6355 "Unable to allocate qpair hints.\n"); 6356 return -ENOMEM; 6357 } 6358 6359 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6360 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6361 6362 rc = btree_init64(&tgt->lun_qpair_map); 6363 if (rc) { 6364 kfree(tgt->qphints); 6365 kfree(tgt); 6366 ql_log(ql_log_info, base_vha, 0x0198, 6367 "Unable to initialize lun_qpair_map btree\n"); 6368 return -EIO; 6369 } 6370 h = &tgt->qphints[0]; 6371 h->qpair = ha->base_qpair; 6372 INIT_LIST_HEAD(&h->hint_elem); 6373 h->cpuid = ha->base_qpair->cpuid; 6374 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6375 6376 for (i = 0; i < ha->max_qpairs; i++) { 6377 unsigned long flags; 6378 6379 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6380 6381 h = &tgt->qphints[i + 1]; 6382 INIT_LIST_HEAD(&h->hint_elem); 6383 if (qpair) { 6384 h->qpair = qpair; 6385 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6386 list_add_tail(&h->hint_elem, &qpair->hints_list); 6387 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6388 h->cpuid = qpair->cpuid; 6389 } 6390 } 6391 6392 tgt->ha = ha; 6393 tgt->vha = base_vha; 6394 init_waitqueue_head(&tgt->waitQ); 6395 INIT_LIST_HEAD(&tgt->del_sess_list); 6396 spin_lock_init(&tgt->sess_work_lock); 6397 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6398 INIT_LIST_HEAD(&tgt->sess_works_list); 6399 atomic_set(&tgt->tgt_global_resets_count, 0); 6400 6401 base_vha->vha_tgt.qla_tgt = tgt; 6402 6403 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6404 "qla_target(%d): using 64 Bit PCI addressing", 6405 base_vha->vp_idx); 6406 /* 3 is reserved */ 6407 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6408 6409 mutex_lock(&qla_tgt_mutex); 6410 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6411 mutex_unlock(&qla_tgt_mutex); 6412 6413 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6414 ha->tgt.tgt_ops->add_target(base_vha); 6415 6416 return 0; 6417 } 6418 6419 /* Must be called under tgt_host_action_mutex */ 6420 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6421 { 6422 if (!vha->vha_tgt.qla_tgt) 6423 return 0; 6424 6425 if (vha->fc_vport) { 6426 qlt_release(vha->vha_tgt.qla_tgt); 6427 return 0; 6428 } 6429 6430 /* free left over qfull cmds */ 6431 qlt_init_term_exchange(vha); 6432 6433 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6434 vha->host_no, ha); 6435 qlt_release(vha->vha_tgt.qla_tgt); 6436 6437 return 0; 6438 } 6439 6440 void qlt_remove_target_resources(struct qla_hw_data *ha) 6441 { 6442 struct scsi_qla_host *node; 6443 u32 key = 0; 6444 6445 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6446 btree_remove32(&ha->tgt.host_map, key); 6447 6448 btree_destroy32(&ha->tgt.host_map); 6449 } 6450 6451 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6452 unsigned char *b) 6453 { 6454 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6455 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6456 put_unaligned_be64(wwpn, b); 6457 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6458 } 6459 6460 /** 6461 * qla_tgt_lport_register - register lport with external module 6462 * 6463 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6464 * @phys_wwpn: physical port WWPN 6465 * @npiv_wwpn: NPIV WWPN 6466 * @npiv_wwnn: NPIV WWNN 6467 * @callback: lport initialization callback for tcm_qla2xxx code 6468 */ 6469 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6470 u64 npiv_wwpn, u64 npiv_wwnn, 6471 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6472 { 6473 struct qla_tgt *tgt; 6474 struct scsi_qla_host *vha; 6475 struct qla_hw_data *ha; 6476 struct Scsi_Host *host; 6477 unsigned long flags; 6478 int rc; 6479 u8 b[WWN_SIZE]; 6480 6481 mutex_lock(&qla_tgt_mutex); 6482 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6483 vha = tgt->vha; 6484 ha = vha->hw; 6485 6486 host = vha->host; 6487 if (!host) 6488 continue; 6489 6490 if (!(host->hostt->supported_mode & MODE_TARGET)) 6491 continue; 6492 6493 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6494 continue; 6495 6496 spin_lock_irqsave(&ha->hardware_lock, flags); 6497 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6498 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6499 host->host_no); 6500 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6501 continue; 6502 } 6503 if (tgt->tgt_stop) { 6504 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6505 host->host_no); 6506 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6507 continue; 6508 } 6509 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6510 6511 if (!scsi_host_get(host)) { 6512 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6513 "Unable to scsi_host_get() for" 6514 " qla2xxx scsi_host\n"); 6515 continue; 6516 } 6517 qlt_lport_dump(vha, phys_wwpn, b); 6518 6519 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6520 scsi_host_put(host); 6521 continue; 6522 } 6523 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6524 if (rc != 0) 6525 scsi_host_put(host); 6526 6527 mutex_unlock(&qla_tgt_mutex); 6528 return rc; 6529 } 6530 mutex_unlock(&qla_tgt_mutex); 6531 6532 return -ENODEV; 6533 } 6534 EXPORT_SYMBOL(qlt_lport_register); 6535 6536 /** 6537 * qla_tgt_lport_deregister - Degister lport 6538 * 6539 * @vha: Registered scsi_qla_host pointer 6540 */ 6541 void qlt_lport_deregister(struct scsi_qla_host *vha) 6542 { 6543 struct qla_hw_data *ha = vha->hw; 6544 struct Scsi_Host *sh = vha->host; 6545 /* 6546 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6547 */ 6548 vha->vha_tgt.target_lport_ptr = NULL; 6549 ha->tgt.tgt_ops = NULL; 6550 /* 6551 * Release the Scsi_Host reference for the underlying qla2xxx host 6552 */ 6553 scsi_host_put(sh); 6554 } 6555 EXPORT_SYMBOL(qlt_lport_deregister); 6556 6557 /* Must be called under HW lock */ 6558 void qlt_set_mode(struct scsi_qla_host *vha) 6559 { 6560 switch (vha->qlini_mode) { 6561 case QLA2XXX_INI_MODE_DISABLED: 6562 case QLA2XXX_INI_MODE_EXCLUSIVE: 6563 vha->host->active_mode = MODE_TARGET; 6564 break; 6565 case QLA2XXX_INI_MODE_ENABLED: 6566 vha->host->active_mode = MODE_INITIATOR; 6567 break; 6568 case QLA2XXX_INI_MODE_DUAL: 6569 vha->host->active_mode = MODE_DUAL; 6570 break; 6571 default: 6572 break; 6573 } 6574 } 6575 6576 /* Must be called under HW lock */ 6577 static void qlt_clear_mode(struct scsi_qla_host *vha) 6578 { 6579 switch (vha->qlini_mode) { 6580 case QLA2XXX_INI_MODE_DISABLED: 6581 vha->host->active_mode = MODE_UNKNOWN; 6582 break; 6583 case QLA2XXX_INI_MODE_EXCLUSIVE: 6584 vha->host->active_mode = MODE_INITIATOR; 6585 break; 6586 case QLA2XXX_INI_MODE_ENABLED: 6587 case QLA2XXX_INI_MODE_DUAL: 6588 vha->host->active_mode = MODE_INITIATOR; 6589 break; 6590 default: 6591 break; 6592 } 6593 } 6594 6595 /* 6596 * qla_tgt_enable_vha - NO LOCK HELD 6597 * 6598 * host_reset, bring up w/ Target Mode Enabled 6599 */ 6600 void 6601 qlt_enable_vha(struct scsi_qla_host *vha) 6602 { 6603 struct qla_hw_data *ha = vha->hw; 6604 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6605 unsigned long flags; 6606 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6607 6608 if (!tgt) { 6609 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6610 "Unable to locate qla_tgt pointer from" 6611 " struct qla_hw_data\n"); 6612 dump_stack(); 6613 return; 6614 } 6615 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6616 return; 6617 6618 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6619 ha->tgt.num_act_qpairs = ha->max_qpairs; 6620 spin_lock_irqsave(&ha->hardware_lock, flags); 6621 tgt->tgt_stopped = 0; 6622 qlt_set_mode(vha); 6623 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6624 6625 mutex_lock(&ha->optrom_mutex); 6626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6627 "%s.\n", __func__); 6628 if (vha->vp_idx) { 6629 qla24xx_disable_vp(vha); 6630 qla24xx_enable_vp(vha); 6631 } else { 6632 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6633 qla2xxx_wake_dpc(base_vha); 6634 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6635 QLA_SUCCESS); 6636 } 6637 mutex_unlock(&ha->optrom_mutex); 6638 } 6639 EXPORT_SYMBOL(qlt_enable_vha); 6640 6641 /* 6642 * qla_tgt_disable_vha - NO LOCK HELD 6643 * 6644 * Disable Target Mode and reset the adapter 6645 */ 6646 static void qlt_disable_vha(struct scsi_qla_host *vha) 6647 { 6648 struct qla_hw_data *ha = vha->hw; 6649 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6650 unsigned long flags; 6651 6652 if (!tgt) { 6653 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6654 "Unable to locate qla_tgt pointer from" 6655 " struct qla_hw_data\n"); 6656 dump_stack(); 6657 return; 6658 } 6659 6660 spin_lock_irqsave(&ha->hardware_lock, flags); 6661 qlt_clear_mode(vha); 6662 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6663 6664 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6665 qla2xxx_wake_dpc(vha); 6666 6667 /* 6668 * We are expecting the offline state. 6669 * QLA_FUNCTION_FAILED means that adapter is offline. 6670 */ 6671 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6672 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6673 "adapter is offline\n"); 6674 } 6675 6676 /* 6677 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6678 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6679 * members. 6680 */ 6681 void 6682 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6683 { 6684 vha->vha_tgt.qla_tgt = NULL; 6685 6686 mutex_init(&vha->vha_tgt.tgt_mutex); 6687 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6688 6689 qlt_clear_mode(vha); 6690 6691 /* 6692 * NOTE: Currently the value is kept the same for <24xx and 6693 * >=24xx ISPs. If it is necessary to change it, 6694 * the check should be added for specific ISPs, 6695 * assigning the value appropriately. 6696 */ 6697 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6698 6699 qlt_add_target(ha, vha); 6700 } 6701 6702 u8 6703 qlt_rff_id(struct scsi_qla_host *vha) 6704 { 6705 u8 fc4_feature = 0; 6706 /* 6707 * FC-4 Feature bit 0 indicates target functionality to the name server. 6708 */ 6709 if (qla_tgt_mode_enabled(vha)) { 6710 fc4_feature = BIT_0; 6711 } else if (qla_ini_mode_enabled(vha)) { 6712 fc4_feature = BIT_1; 6713 } else if (qla_dual_mode_enabled(vha)) 6714 fc4_feature = BIT_0 | BIT_1; 6715 6716 return fc4_feature; 6717 } 6718 6719 /* 6720 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6721 * @ha: HA context 6722 * 6723 * Beginning of ATIO ring has initialization control block already built 6724 * by nvram config routine. 6725 * 6726 * Returns 0 on success. 6727 */ 6728 void 6729 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6730 { 6731 struct qla_hw_data *ha = vha->hw; 6732 uint16_t cnt; 6733 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6734 6735 if (qla_ini_mode_enabled(vha)) 6736 return; 6737 6738 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6739 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6740 pkt++; 6741 } 6742 6743 } 6744 6745 /* 6746 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6747 * @ha: SCSI driver HA context 6748 */ 6749 void 6750 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6751 { 6752 struct qla_hw_data *ha = vha->hw; 6753 struct atio_from_isp *pkt; 6754 int cnt, i; 6755 6756 if (!ha->flags.fw_started) 6757 return; 6758 6759 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6760 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6761 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6762 cnt = pkt->u.raw.entry_count; 6763 6764 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6765 /* 6766 * This packet is corrupted. The header + payload 6767 * can not be trusted. There is no point in passing 6768 * it further up. 6769 */ 6770 ql_log(ql_log_warn, vha, 0xd03c, 6771 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6772 &pkt->u.isp24.fcp_hdr.s_id, 6773 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6774 pkt->u.isp24.exchange_addr, pkt); 6775 6776 adjust_corrupted_atio(pkt); 6777 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6778 ha_locked, 0); 6779 } else { 6780 qlt_24xx_atio_pkt_all_vps(vha, 6781 (struct atio_from_isp *)pkt, ha_locked); 6782 } 6783 6784 for (i = 0; i < cnt; i++) { 6785 ha->tgt.atio_ring_index++; 6786 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6787 ha->tgt.atio_ring_index = 0; 6788 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6789 } else 6790 ha->tgt.atio_ring_ptr++; 6791 6792 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6793 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6794 } 6795 wmb(); 6796 } 6797 6798 /* Adjust ring index */ 6799 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6800 } 6801 6802 void 6803 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6804 { 6805 struct qla_hw_data *ha = vha->hw; 6806 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6807 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6808 6809 if (!QLA_TGT_MODE_ENABLED()) 6810 return; 6811 6812 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6813 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6814 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6815 6816 if (ha->flags.msix_enabled) { 6817 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6818 if (IS_QLA2071(ha)) { 6819 /* 4 ports Baker: Enable Interrupt Handshake */ 6820 icb->msix_atio = 0; 6821 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6822 } else { 6823 icb->msix_atio = cpu_to_le16(msix->entry); 6824 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6825 } 6826 ql_dbg(ql_dbg_init, vha, 0xf072, 6827 "Registering ICB vector 0x%x for atio que.\n", 6828 msix->entry); 6829 } 6830 } else { 6831 /* INTx|MSI */ 6832 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6833 icb->msix_atio = 0; 6834 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6835 ql_dbg(ql_dbg_init, vha, 0xf072, 6836 "%s: Use INTx for ATIOQ.\n", __func__); 6837 } 6838 } 6839 } 6840 6841 void 6842 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6843 { 6844 struct qla_hw_data *ha = vha->hw; 6845 u32 tmp; 6846 6847 if (!QLA_TGT_MODE_ENABLED()) 6848 return; 6849 6850 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6851 if (!ha->tgt.saved_set) { 6852 /* We save only once */ 6853 ha->tgt.saved_exchange_count = nv->exchange_count; 6854 ha->tgt.saved_firmware_options_1 = 6855 nv->firmware_options_1; 6856 ha->tgt.saved_firmware_options_2 = 6857 nv->firmware_options_2; 6858 ha->tgt.saved_firmware_options_3 = 6859 nv->firmware_options_3; 6860 ha->tgt.saved_set = 1; 6861 } 6862 6863 if (qla_tgt_mode_enabled(vha)) 6864 nv->exchange_count = cpu_to_le16(0xFFFF); 6865 else /* dual */ 6866 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6867 6868 /* Enable target mode */ 6869 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6870 6871 /* Disable ini mode, if requested */ 6872 if (qla_tgt_mode_enabled(vha)) 6873 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6874 6875 /* Disable Full Login after LIP */ 6876 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6877 /* Enable initial LIP */ 6878 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6879 if (ql2xtgt_tape_enable) 6880 /* Enable FC Tape support */ 6881 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6882 else 6883 /* Disable FC Tape support */ 6884 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6885 6886 /* Disable Full Login after LIP */ 6887 nv->host_p &= cpu_to_le32(~BIT_10); 6888 6889 /* 6890 * clear BIT 15 explicitly as we have seen at least 6891 * a couple of instances where this was set and this 6892 * was causing the firmware to not be initialized. 6893 */ 6894 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6895 /* Enable target PRLI control */ 6896 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6897 6898 if (IS_QLA25XX(ha)) { 6899 /* Change Loop-prefer to Pt-Pt */ 6900 tmp = ~(BIT_4|BIT_5|BIT_6); 6901 nv->firmware_options_2 &= cpu_to_le32(tmp); 6902 tmp = P2P << 4; 6903 nv->firmware_options_2 |= cpu_to_le32(tmp); 6904 } 6905 } else { 6906 if (ha->tgt.saved_set) { 6907 nv->exchange_count = ha->tgt.saved_exchange_count; 6908 nv->firmware_options_1 = 6909 ha->tgt.saved_firmware_options_1; 6910 nv->firmware_options_2 = 6911 ha->tgt.saved_firmware_options_2; 6912 nv->firmware_options_3 = 6913 ha->tgt.saved_firmware_options_3; 6914 } 6915 return; 6916 } 6917 6918 if (ha->base_qpair->enable_class_2) { 6919 if (vha->flags.init_done) 6920 fc_host_supported_classes(vha->host) = 6921 FC_COS_CLASS2 | FC_COS_CLASS3; 6922 6923 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6924 } else { 6925 if (vha->flags.init_done) 6926 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6927 6928 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6929 } 6930 } 6931 6932 void 6933 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6934 struct init_cb_24xx *icb) 6935 { 6936 struct qla_hw_data *ha = vha->hw; 6937 6938 if (!QLA_TGT_MODE_ENABLED()) 6939 return; 6940 6941 if (ha->tgt.node_name_set) { 6942 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6943 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6944 } 6945 } 6946 6947 void 6948 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6949 { 6950 struct qla_hw_data *ha = vha->hw; 6951 u32 tmp; 6952 6953 if (!QLA_TGT_MODE_ENABLED()) 6954 return; 6955 6956 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6957 if (!ha->tgt.saved_set) { 6958 /* We save only once */ 6959 ha->tgt.saved_exchange_count = nv->exchange_count; 6960 ha->tgt.saved_firmware_options_1 = 6961 nv->firmware_options_1; 6962 ha->tgt.saved_firmware_options_2 = 6963 nv->firmware_options_2; 6964 ha->tgt.saved_firmware_options_3 = 6965 nv->firmware_options_3; 6966 ha->tgt.saved_set = 1; 6967 } 6968 6969 if (qla_tgt_mode_enabled(vha)) 6970 nv->exchange_count = cpu_to_le16(0xFFFF); 6971 else /* dual */ 6972 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6973 6974 /* Enable target mode */ 6975 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6976 6977 /* Disable ini mode, if requested */ 6978 if (qla_tgt_mode_enabled(vha)) 6979 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6980 /* Disable Full Login after LIP */ 6981 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6982 /* Enable initial LIP */ 6983 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6984 /* 6985 * clear BIT 15 explicitly as we have seen at 6986 * least a couple of instances where this was set 6987 * and this was causing the firmware to not be 6988 * initialized. 6989 */ 6990 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6991 if (ql2xtgt_tape_enable) 6992 /* Enable FC tape support */ 6993 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6994 else 6995 /* Disable FC tape support */ 6996 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6997 6998 /* Disable Full Login after LIP */ 6999 nv->host_p &= cpu_to_le32(~BIT_10); 7000 /* Enable target PRLI control */ 7001 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7002 7003 /* Change Loop-prefer to Pt-Pt */ 7004 tmp = ~(BIT_4|BIT_5|BIT_6); 7005 nv->firmware_options_2 &= cpu_to_le32(tmp); 7006 tmp = P2P << 4; 7007 nv->firmware_options_2 |= cpu_to_le32(tmp); 7008 } else { 7009 if (ha->tgt.saved_set) { 7010 nv->exchange_count = ha->tgt.saved_exchange_count; 7011 nv->firmware_options_1 = 7012 ha->tgt.saved_firmware_options_1; 7013 nv->firmware_options_2 = 7014 ha->tgt.saved_firmware_options_2; 7015 nv->firmware_options_3 = 7016 ha->tgt.saved_firmware_options_3; 7017 } 7018 return; 7019 } 7020 7021 if (ha->base_qpair->enable_class_2) { 7022 if (vha->flags.init_done) 7023 fc_host_supported_classes(vha->host) = 7024 FC_COS_CLASS2 | FC_COS_CLASS3; 7025 7026 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7027 } else { 7028 if (vha->flags.init_done) 7029 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7030 7031 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7032 } 7033 } 7034 7035 void 7036 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7037 struct init_cb_81xx *icb) 7038 { 7039 struct qla_hw_data *ha = vha->hw; 7040 7041 if (!QLA_TGT_MODE_ENABLED()) 7042 return; 7043 7044 if (ha->tgt.node_name_set) { 7045 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7046 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7047 } 7048 } 7049 7050 void 7051 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7052 { 7053 if (!QLA_TGT_MODE_ENABLED()) 7054 return; 7055 7056 ha->msix_count += 1; /* For ATIO Q */ 7057 } 7058 7059 7060 void 7061 qlt_modify_vp_config(struct scsi_qla_host *vha, 7062 struct vp_config_entry_24xx *vpmod) 7063 { 7064 /* enable target mode. Bit5 = 1 => disable */ 7065 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7066 vpmod->options_idx1 &= ~BIT_5; 7067 7068 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7069 if (qla_tgt_mode_enabled(vha)) 7070 vpmod->options_idx1 &= ~BIT_4; 7071 } 7072 7073 void 7074 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7075 { 7076 int rc; 7077 7078 if (!QLA_TGT_MODE_ENABLED()) 7079 return; 7080 7081 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7082 IS_QLA28XX(ha)) { 7083 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7084 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7085 } else { 7086 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7087 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7088 } 7089 7090 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7091 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7092 7093 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7094 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7095 qlt_unknown_atio_work_fn); 7096 7097 qlt_clear_mode(base_vha); 7098 7099 rc = btree_init32(&ha->tgt.host_map); 7100 if (rc) 7101 ql_log(ql_log_info, base_vha, 0xd03d, 7102 "Unable to initialize ha->host_map btree\n"); 7103 7104 qlt_update_vp_map(base_vha, SET_VP_IDX); 7105 } 7106 7107 irqreturn_t 7108 qla83xx_msix_atio_q(int irq, void *dev_id) 7109 { 7110 struct rsp_que *rsp; 7111 scsi_qla_host_t *vha; 7112 struct qla_hw_data *ha; 7113 unsigned long flags; 7114 7115 rsp = (struct rsp_que *) dev_id; 7116 ha = rsp->hw; 7117 vha = pci_get_drvdata(ha->pdev); 7118 7119 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7120 7121 qlt_24xx_process_atio_queue(vha, 0); 7122 7123 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7124 7125 return IRQ_HANDLED; 7126 } 7127 7128 static void 7129 qlt_handle_abts_recv_work(struct work_struct *work) 7130 { 7131 struct qla_tgt_sess_op *op = container_of(work, 7132 struct qla_tgt_sess_op, work); 7133 scsi_qla_host_t *vha = op->vha; 7134 struct qla_hw_data *ha = vha->hw; 7135 unsigned long flags; 7136 7137 if (qla2x00_reset_active(vha) || 7138 (op->chip_reset != ha->base_qpair->chip_reset)) 7139 return; 7140 7141 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7142 qlt_24xx_process_atio_queue(vha, 0); 7143 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7144 7145 spin_lock_irqsave(&ha->hardware_lock, flags); 7146 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7147 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7148 7149 kfree(op); 7150 } 7151 7152 void 7153 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7154 response_t *pkt) 7155 { 7156 struct qla_tgt_sess_op *op; 7157 7158 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7159 7160 if (!op) { 7161 /* do not reach for ATIO queue here. This is best effort err 7162 * recovery at this point. 7163 */ 7164 qlt_response_pkt_all_vps(vha, rsp, pkt); 7165 return; 7166 } 7167 7168 memcpy(&op->atio, pkt, sizeof(*pkt)); 7169 op->vha = vha; 7170 op->chip_reset = vha->hw->base_qpair->chip_reset; 7171 op->rsp = rsp; 7172 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7173 queue_work(qla_tgt_wq, &op->work); 7174 return; 7175 } 7176 7177 int 7178 qlt_mem_alloc(struct qla_hw_data *ha) 7179 { 7180 if (!QLA_TGT_MODE_ENABLED()) 7181 return 0; 7182 7183 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7184 sizeof(struct qla_tgt_vp_map), 7185 GFP_KERNEL); 7186 if (!ha->tgt.tgt_vp_map) 7187 return -ENOMEM; 7188 7189 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7190 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7191 &ha->tgt.atio_dma, GFP_KERNEL); 7192 if (!ha->tgt.atio_ring) { 7193 kfree(ha->tgt.tgt_vp_map); 7194 return -ENOMEM; 7195 } 7196 return 0; 7197 } 7198 7199 void 7200 qlt_mem_free(struct qla_hw_data *ha) 7201 { 7202 if (!QLA_TGT_MODE_ENABLED()) 7203 return; 7204 7205 if (ha->tgt.atio_ring) { 7206 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7207 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7208 ha->tgt.atio_dma); 7209 } 7210 ha->tgt.atio_ring = NULL; 7211 ha->tgt.atio_dma = 0; 7212 kfree(ha->tgt.tgt_vp_map); 7213 ha->tgt.tgt_vp_map = NULL; 7214 } 7215 7216 /* vport_slock to be held by the caller */ 7217 void 7218 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7219 { 7220 void *slot; 7221 u32 key; 7222 int rc; 7223 7224 if (!QLA_TGT_MODE_ENABLED()) 7225 return; 7226 7227 key = vha->d_id.b24; 7228 7229 switch (cmd) { 7230 case SET_VP_IDX: 7231 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7232 break; 7233 case SET_AL_PA: 7234 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7235 if (!slot) { 7236 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7237 "Save vha in host_map %p %06x\n", vha, key); 7238 rc = btree_insert32(&vha->hw->tgt.host_map, 7239 key, vha, GFP_ATOMIC); 7240 if (rc) 7241 ql_log(ql_log_info, vha, 0xd03e, 7242 "Unable to insert s_id into host_map: %06x\n", 7243 key); 7244 return; 7245 } 7246 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7247 "replace existing vha in host_map %p %06x\n", vha, key); 7248 btree_update32(&vha->hw->tgt.host_map, key, vha); 7249 break; 7250 case RESET_VP_IDX: 7251 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7252 break; 7253 case RESET_AL_PA: 7254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7255 "clear vha in host_map %p %06x\n", vha, key); 7256 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7257 if (slot) 7258 btree_remove32(&vha->hw->tgt.host_map, key); 7259 vha->d_id.b24 = 0; 7260 break; 7261 } 7262 } 7263 7264 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7265 { 7266 7267 if (!vha->d_id.b24) { 7268 vha->d_id = id; 7269 qlt_update_vp_map(vha, SET_AL_PA); 7270 } else if (vha->d_id.b24 != id.b24) { 7271 qlt_update_vp_map(vha, RESET_AL_PA); 7272 vha->d_id = id; 7273 qlt_update_vp_map(vha, SET_AL_PA); 7274 } 7275 } 7276 7277 static int __init qlt_parse_ini_mode(void) 7278 { 7279 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7280 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7281 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7282 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7283 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7284 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7285 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7286 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7287 else 7288 return false; 7289 7290 return true; 7291 } 7292 7293 int __init qlt_init(void) 7294 { 7295 int ret; 7296 7297 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7298 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7299 7300 if (!qlt_parse_ini_mode()) { 7301 ql_log(ql_log_fatal, NULL, 0xe06b, 7302 "qlt_parse_ini_mode() failed\n"); 7303 return -EINVAL; 7304 } 7305 7306 if (!QLA_TGT_MODE_ENABLED()) 7307 return 0; 7308 7309 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7310 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7311 qla_tgt_mgmt_cmd), 0, NULL); 7312 if (!qla_tgt_mgmt_cmd_cachep) { 7313 ql_log(ql_log_fatal, NULL, 0xd04b, 7314 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7315 return -ENOMEM; 7316 } 7317 7318 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7319 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7320 0, NULL); 7321 7322 if (!qla_tgt_plogi_cachep) { 7323 ql_log(ql_log_fatal, NULL, 0xe06d, 7324 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7325 ret = -ENOMEM; 7326 goto out_mgmt_cmd_cachep; 7327 } 7328 7329 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7330 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7331 if (!qla_tgt_mgmt_cmd_mempool) { 7332 ql_log(ql_log_fatal, NULL, 0xe06e, 7333 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7334 ret = -ENOMEM; 7335 goto out_plogi_cachep; 7336 } 7337 7338 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7339 if (!qla_tgt_wq) { 7340 ql_log(ql_log_fatal, NULL, 0xe06f, 7341 "alloc_workqueue for qla_tgt_wq failed\n"); 7342 ret = -ENOMEM; 7343 goto out_cmd_mempool; 7344 } 7345 /* 7346 * Return 1 to signal that initiator-mode is being disabled 7347 */ 7348 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7349 7350 out_cmd_mempool: 7351 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7352 out_plogi_cachep: 7353 kmem_cache_destroy(qla_tgt_plogi_cachep); 7354 out_mgmt_cmd_cachep: 7355 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7356 return ret; 7357 } 7358 7359 void qlt_exit(void) 7360 { 7361 if (!QLA_TGT_MODE_ENABLED()) 7362 return; 7363 7364 destroy_workqueue(qla_tgt_wq); 7365 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7366 kmem_cache_destroy(qla_tgt_plogi_cachep); 7367 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7368 } 7369