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->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 985 rc = qla2x00_post_async_logout_work(vha, sess, 986 NULL); 987 if (rc != QLA_SUCCESS) 988 ql_log(ql_log_warn, vha, 0xf085, 989 "Schedule logo failed sess %p rc %d\n", 990 sess, rc); 991 else 992 logout_started = true; 993 } else if (own && (own->iocb.u.isp24.status_subcode == 994 ELS_PRLI) && ha->flags.rida_fmt2) { 995 rc = qla2x00_post_async_prlo_work(vha, sess, 996 NULL); 997 if (rc != QLA_SUCCESS) 998 ql_log(ql_log_warn, vha, 0xf085, 999 "Schedule PRLO failed sess %p rc %d\n", 1000 sess, rc); 1001 else 1002 logout_started = true; 1003 } 1004 } /* if sess->logout_on_delete */ 1005 1006 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1007 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1008 sess->nvme_flag |= NVME_FLAG_DELETING; 1009 qla_nvme_unregister_remote_port(sess); 1010 } 1011 } 1012 1013 /* 1014 * Release the target session for FC Nexus from fabric module code. 1015 */ 1016 if (sess->se_sess != NULL) 1017 ha->tgt.tgt_ops->free_session(sess); 1018 1019 if (logout_started) { 1020 bool traced = false; 1021 u16 cnt = 0; 1022 1023 while (!READ_ONCE(sess->logout_completed)) { 1024 if (!traced) { 1025 ql_dbg(ql_dbg_disc, vha, 0xf086, 1026 "%s: waiting for sess %p logout\n", 1027 __func__, sess); 1028 traced = true; 1029 } 1030 msleep(100); 1031 cnt++; 1032 if (cnt > 200) 1033 break; 1034 } 1035 1036 ql_dbg(ql_dbg_disc, vha, 0xf087, 1037 "%s: sess %p logout completed\n", __func__, sess); 1038 } 1039 1040 if (sess->logo_ack_needed) { 1041 sess->logo_ack_needed = 0; 1042 qla24xx_async_notify_ack(vha, sess, 1043 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1044 } 1045 1046 spin_lock_irqsave(&vha->work_lock, flags); 1047 sess->flags &= ~FCF_ASYNC_SENT; 1048 spin_unlock_irqrestore(&vha->work_lock, flags); 1049 1050 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1051 if (sess->se_sess) { 1052 sess->se_sess = NULL; 1053 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1054 tgt->sess_count--; 1055 } 1056 1057 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1058 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1059 sess->deleted = QLA_SESS_DELETED; 1060 1061 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1062 vha->fcport_count--; 1063 sess->login_succ = 0; 1064 } 1065 1066 qla2x00_clear_loop_id(sess); 1067 1068 if (sess->conflict) { 1069 sess->conflict->login_pause = 0; 1070 sess->conflict = NULL; 1071 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1072 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1073 } 1074 1075 { 1076 struct qlt_plogi_ack_t *con = 1077 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1078 struct imm_ntfy_from_isp *iocb; 1079 1080 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1081 1082 if (con) { 1083 iocb = &con->iocb; 1084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1085 "se_sess %p / sess %p port %8phC is gone," 1086 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1087 sess->se_sess, sess, sess->port_name, 1088 own ? "releasing own PLOGI" : "no own PLOGI pending", 1089 own ? own->ref_count : -1, 1090 iocb->u.isp24.port_name, con->ref_count); 1091 qlt_plogi_ack_unref(vha, con); 1092 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1093 } else { 1094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1095 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1096 sess->se_sess, sess, sess->port_name, 1097 own ? "releasing own PLOGI" : 1098 "no own PLOGI pending", 1099 own ? own->ref_count : -1); 1100 } 1101 1102 if (own) { 1103 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1104 qlt_plogi_ack_unref(vha, own); 1105 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1106 } 1107 } 1108 1109 sess->explicit_logout = 0; 1110 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1111 sess->free_pending = 0; 1112 1113 qla2x00_dfs_remove_rport(vha, sess); 1114 1115 ql_dbg(ql_dbg_disc, vha, 0xf001, 1116 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1117 sess, sess->port_name, vha->fcport_count); 1118 1119 if (tgt && (tgt->sess_count == 0)) 1120 wake_up_all(&tgt->waitQ); 1121 1122 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1123 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1124 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1125 switch (vha->host->active_mode) { 1126 case MODE_INITIATOR: 1127 case MODE_DUAL: 1128 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1129 qla2xxx_wake_dpc(vha); 1130 break; 1131 case MODE_TARGET: 1132 default: 1133 /* no-op */ 1134 break; 1135 } 1136 } 1137 1138 if (vha->fcport_count == 0) 1139 wake_up_all(&vha->fcport_waitQ); 1140 } 1141 1142 /* ha->tgt.sess_lock supposed to be held on entry */ 1143 void qlt_unreg_sess(struct fc_port *sess) 1144 { 1145 struct scsi_qla_host *vha = sess->vha; 1146 unsigned long flags; 1147 1148 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1149 "%s sess %p for deletion %8phC\n", 1150 __func__, sess, sess->port_name); 1151 1152 spin_lock_irqsave(&sess->vha->work_lock, flags); 1153 if (sess->free_pending) { 1154 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1155 return; 1156 } 1157 sess->free_pending = 1; 1158 /* 1159 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1160 * management from being sent. 1161 */ 1162 sess->flags |= FCF_ASYNC_SENT; 1163 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1164 1165 if (sess->se_sess) 1166 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1167 1168 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1169 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1170 sess->last_rscn_gen = sess->rscn_gen; 1171 sess->last_login_gen = sess->login_gen; 1172 1173 queue_work(sess->vha->hw->wq, &sess->free_work); 1174 } 1175 EXPORT_SYMBOL(qlt_unreg_sess); 1176 1177 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1178 { 1179 struct qla_hw_data *ha = vha->hw; 1180 struct fc_port *sess = NULL; 1181 uint16_t loop_id; 1182 int res = 0; 1183 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1184 unsigned long flags; 1185 1186 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1187 if (loop_id == 0xFFFF) { 1188 /* Global event */ 1189 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1190 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1191 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1192 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1193 } else { 1194 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1195 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1196 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1197 } 1198 1199 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1200 "Using sess for qla_tgt_reset: %p\n", sess); 1201 if (!sess) { 1202 res = -ESRCH; 1203 return res; 1204 } 1205 1206 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1207 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1208 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1209 mcmd, loop_id); 1210 1211 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1212 } 1213 1214 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1215 { 1216 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1217 sess->logout_on_delete = 0; 1218 sess->logo_ack_needed = 0; 1219 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1220 } 1221 } 1222 1223 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1224 { 1225 struct qla_tgt *tgt = sess->tgt; 1226 unsigned long flags; 1227 u16 sec; 1228 1229 switch (sess->disc_state) { 1230 case DSC_DELETE_PEND: 1231 return; 1232 case DSC_DELETED: 1233 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1234 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1235 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1236 wake_up_all(&tgt->waitQ); 1237 1238 if (sess->vha->fcport_count == 0) 1239 wake_up_all(&sess->vha->fcport_waitQ); 1240 return; 1241 } 1242 break; 1243 case DSC_UPD_FCPORT: 1244 /* 1245 * This port is not done reporting to upper layer. 1246 * let it finish 1247 */ 1248 sess->next_disc_state = DSC_DELETE_PEND; 1249 sec = jiffies_to_msecs(jiffies - 1250 sess->jiffies_at_registration)/1000; 1251 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1252 sess->sec_since_registration = sec; 1253 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1254 "%s %8phC : Slow Rport registration(%d Sec)\n", 1255 __func__, sess->port_name, sec); 1256 } 1257 return; 1258 default: 1259 break; 1260 } 1261 1262 spin_lock_irqsave(&sess->vha->work_lock, flags); 1263 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1264 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1265 return; 1266 } 1267 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1268 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1269 1270 sess->prli_pend_timer = 0; 1271 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1272 1273 qla24xx_chk_fcp_state(sess); 1274 1275 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1276 "Scheduling sess %p for deletion %8phC\n", 1277 sess, sess->port_name); 1278 1279 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1280 } 1281 1282 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1283 { 1284 struct fc_port *sess; 1285 scsi_qla_host_t *vha = tgt->vha; 1286 1287 list_for_each_entry(sess, &vha->vp_fcports, list) { 1288 if (sess->se_sess) 1289 qlt_schedule_sess_for_deletion(sess); 1290 } 1291 1292 /* At this point tgt could be already dead */ 1293 } 1294 1295 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1296 uint16_t *loop_id) 1297 { 1298 struct qla_hw_data *ha = vha->hw; 1299 dma_addr_t gid_list_dma; 1300 struct gid_list_info *gid_list, *gid; 1301 int res, rc, i; 1302 uint16_t entries; 1303 1304 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1305 &gid_list_dma, GFP_KERNEL); 1306 if (!gid_list) { 1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1308 "qla_target(%d): DMA Alloc failed of %u\n", 1309 vha->vp_idx, qla2x00_gid_list_size(ha)); 1310 return -ENOMEM; 1311 } 1312 1313 /* Get list of logged in devices */ 1314 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1315 if (rc != QLA_SUCCESS) { 1316 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1317 "qla_target(%d): get_id_list() failed: %x\n", 1318 vha->vp_idx, rc); 1319 res = -EBUSY; 1320 goto out_free_id_list; 1321 } 1322 1323 gid = gid_list; 1324 res = -ENOENT; 1325 for (i = 0; i < entries; i++) { 1326 if (gid->al_pa == s_id.al_pa && 1327 gid->area == s_id.area && 1328 gid->domain == s_id.domain) { 1329 *loop_id = le16_to_cpu(gid->loop_id); 1330 res = 0; 1331 break; 1332 } 1333 gid = (void *)gid + ha->gid_list_info_size; 1334 } 1335 1336 out_free_id_list: 1337 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1338 gid_list, gid_list_dma); 1339 return res; 1340 } 1341 1342 /* 1343 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1344 * Caller must put it. 1345 */ 1346 static struct fc_port *qlt_create_sess( 1347 struct scsi_qla_host *vha, 1348 fc_port_t *fcport, 1349 bool local) 1350 { 1351 struct qla_hw_data *ha = vha->hw; 1352 struct fc_port *sess = fcport; 1353 unsigned long flags; 1354 1355 if (vha->vha_tgt.qla_tgt->tgt_stop) 1356 return NULL; 1357 1358 if (fcport->se_sess) { 1359 if (!kref_get_unless_zero(&sess->sess_kref)) { 1360 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1361 "%s: kref_get_unless_zero failed for %8phC\n", 1362 __func__, sess->port_name); 1363 return NULL; 1364 } 1365 return fcport; 1366 } 1367 sess->tgt = vha->vha_tgt.qla_tgt; 1368 sess->local = local; 1369 1370 /* 1371 * Under normal circumstances we want to logout from firmware when 1372 * session eventually ends and release corresponding nport handle. 1373 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1374 * code will adjust these flags as necessary. 1375 */ 1376 sess->logout_on_delete = 1; 1377 sess->keep_nport_handle = 0; 1378 sess->logout_completed = 0; 1379 1380 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1381 &fcport->port_name[0], sess) < 0) { 1382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1383 "(%d) %8phC check_initiator_node_acl failed\n", 1384 vha->vp_idx, fcport->port_name); 1385 return NULL; 1386 } else { 1387 kref_init(&fcport->sess_kref); 1388 /* 1389 * Take an extra reference to ->sess_kref here to handle 1390 * fc_port access across ->tgt.sess_lock reaquire. 1391 */ 1392 if (!kref_get_unless_zero(&sess->sess_kref)) { 1393 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1394 "%s: kref_get_unless_zero failed for %8phC\n", 1395 __func__, sess->port_name); 1396 return NULL; 1397 } 1398 1399 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1400 if (!IS_SW_RESV_ADDR(sess->d_id)) 1401 vha->vha_tgt.qla_tgt->sess_count++; 1402 1403 qlt_do_generation_tick(vha, &sess->generation); 1404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1405 } 1406 1407 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1408 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1409 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1410 vha->vha_tgt.qla_tgt->sess_count); 1411 1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1413 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1414 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1415 vha->vp_idx, local ? "local " : "", fcport->port_name, 1416 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1417 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1418 1419 return sess; 1420 } 1421 1422 /* 1423 * max_gen - specifies maximum session generation 1424 * at which this deletion requestion is still valid 1425 */ 1426 void 1427 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1428 { 1429 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1430 struct fc_port *sess = fcport; 1431 unsigned long flags; 1432 1433 if (!vha->hw->tgt.tgt_ops) 1434 return; 1435 1436 if (!tgt) 1437 return; 1438 1439 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1440 if (tgt->tgt_stop) { 1441 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1442 return; 1443 } 1444 if (!sess->se_sess) { 1445 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1446 return; 1447 } 1448 1449 if (max_gen - sess->generation < 0) { 1450 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1452 "Ignoring stale deletion request for se_sess %p / sess %p" 1453 " for port %8phC, req_gen %d, sess_gen %d\n", 1454 sess->se_sess, sess, sess->port_name, max_gen, 1455 sess->generation); 1456 return; 1457 } 1458 1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1460 1461 sess->local = 1; 1462 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1463 qlt_schedule_sess_for_deletion(sess); 1464 } 1465 1466 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1467 { 1468 struct qla_hw_data *ha = tgt->ha; 1469 unsigned long flags; 1470 int res; 1471 /* 1472 * We need to protect against race, when tgt is freed before or 1473 * inside wake_up() 1474 */ 1475 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1476 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1477 "tgt %p, sess_count=%d\n", 1478 tgt, tgt->sess_count); 1479 res = (tgt->sess_count == 0); 1480 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1481 1482 return res; 1483 } 1484 1485 /* Called by tcm_qla2xxx configfs code */ 1486 int qlt_stop_phase1(struct qla_tgt *tgt) 1487 { 1488 struct scsi_qla_host *vha = tgt->vha; 1489 struct qla_hw_data *ha = tgt->ha; 1490 unsigned long flags; 1491 1492 mutex_lock(&ha->optrom_mutex); 1493 mutex_lock(&qla_tgt_mutex); 1494 1495 if (tgt->tgt_stop || tgt->tgt_stopped) { 1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1497 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1498 mutex_unlock(&qla_tgt_mutex); 1499 mutex_unlock(&ha->optrom_mutex); 1500 return -EPERM; 1501 } 1502 1503 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1504 vha->host_no, vha); 1505 /* 1506 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1507 * Lock is needed, because we still can get an incoming packet. 1508 */ 1509 mutex_lock(&vha->vha_tgt.tgt_mutex); 1510 tgt->tgt_stop = 1; 1511 qlt_clear_tgt_db(tgt); 1512 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1513 mutex_unlock(&qla_tgt_mutex); 1514 1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1516 "Waiting for sess works (tgt %p)", tgt); 1517 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1518 while (!list_empty(&tgt->sess_works_list)) { 1519 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1520 flush_scheduled_work(); 1521 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1522 } 1523 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1524 1525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1526 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1527 1528 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1529 1530 /* Big hammer */ 1531 if (!ha->flags.host_shutting_down && 1532 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1533 qlt_disable_vha(vha); 1534 1535 /* Wait for sessions to clear out (just in case) */ 1536 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1537 mutex_unlock(&ha->optrom_mutex); 1538 1539 return 0; 1540 } 1541 EXPORT_SYMBOL(qlt_stop_phase1); 1542 1543 /* Called by tcm_qla2xxx configfs code */ 1544 void qlt_stop_phase2(struct qla_tgt *tgt) 1545 { 1546 scsi_qla_host_t *vha = tgt->vha; 1547 1548 if (tgt->tgt_stopped) { 1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1550 "Already in tgt->tgt_stopped state\n"); 1551 dump_stack(); 1552 return; 1553 } 1554 if (!tgt->tgt_stop) { 1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1556 "%s: phase1 stop is not completed\n", __func__); 1557 dump_stack(); 1558 return; 1559 } 1560 1561 mutex_lock(&vha->vha_tgt.tgt_mutex); 1562 tgt->tgt_stop = 0; 1563 tgt->tgt_stopped = 1; 1564 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1565 1566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1567 tgt); 1568 1569 switch (vha->qlini_mode) { 1570 case QLA2XXX_INI_MODE_EXCLUSIVE: 1571 vha->flags.online = 1; 1572 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1573 break; 1574 default: 1575 break; 1576 } 1577 } 1578 EXPORT_SYMBOL(qlt_stop_phase2); 1579 1580 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1581 static void qlt_release(struct qla_tgt *tgt) 1582 { 1583 scsi_qla_host_t *vha = tgt->vha; 1584 void *node; 1585 u64 key = 0; 1586 u16 i; 1587 struct qla_qpair_hint *h; 1588 struct qla_hw_data *ha = vha->hw; 1589 1590 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1591 qlt_stop_phase1(tgt); 1592 1593 if (!tgt->tgt_stopped) 1594 qlt_stop_phase2(tgt); 1595 1596 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1597 unsigned long flags; 1598 1599 h = &tgt->qphints[i]; 1600 if (h->qpair) { 1601 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1602 list_del(&h->hint_elem); 1603 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1604 h->qpair = NULL; 1605 } 1606 } 1607 kfree(tgt->qphints); 1608 mutex_lock(&qla_tgt_mutex); 1609 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1610 mutex_unlock(&qla_tgt_mutex); 1611 1612 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1613 btree_remove64(&tgt->lun_qpair_map, key); 1614 1615 btree_destroy64(&tgt->lun_qpair_map); 1616 1617 if (vha->vp_idx) 1618 if (ha->tgt.tgt_ops && 1619 ha->tgt.tgt_ops->remove_target && 1620 vha->vha_tgt.target_lport_ptr) 1621 ha->tgt.tgt_ops->remove_target(vha); 1622 1623 vha->vha_tgt.qla_tgt = NULL; 1624 1625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1626 "Release of tgt %p finished\n", tgt); 1627 1628 kfree(tgt); 1629 } 1630 1631 /* ha->hardware_lock supposed to be held on entry */ 1632 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1633 const void *param, unsigned int param_size) 1634 { 1635 struct qla_tgt_sess_work_param *prm; 1636 unsigned long flags; 1637 1638 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1639 if (!prm) { 1640 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1641 "qla_target(%d): Unable to create session " 1642 "work, command will be refused", 0); 1643 return -ENOMEM; 1644 } 1645 1646 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1647 "Scheduling work (type %d, prm %p)" 1648 " to find session for param %p (size %d, tgt %p)\n", 1649 type, prm, param, param_size, tgt); 1650 1651 prm->type = type; 1652 memcpy(&prm->tm_iocb, param, param_size); 1653 1654 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1655 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1656 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1657 1658 schedule_work(&tgt->sess_work); 1659 1660 return 0; 1661 } 1662 1663 /* 1664 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1665 */ 1666 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1667 struct imm_ntfy_from_isp *ntfy, 1668 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1669 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1670 { 1671 struct scsi_qla_host *vha = qpair->vha; 1672 struct qla_hw_data *ha = vha->hw; 1673 request_t *pkt; 1674 struct nack_to_isp *nack; 1675 1676 if (!ha->flags.fw_started) 1677 return; 1678 1679 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1680 1681 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1682 if (!pkt) { 1683 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1684 "qla_target(%d): %s failed: unable to allocate " 1685 "request packet\n", vha->vp_idx, __func__); 1686 return; 1687 } 1688 1689 if (vha->vha_tgt.qla_tgt != NULL) 1690 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1691 1692 pkt->entry_type = NOTIFY_ACK_TYPE; 1693 pkt->entry_count = 1; 1694 1695 nack = (struct nack_to_isp *)pkt; 1696 nack->ox_id = ntfy->ox_id; 1697 1698 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1699 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1700 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1701 nack->u.isp24.flags = ntfy->u.isp24.flags & 1702 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1703 } 1704 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1705 nack->u.isp24.status = ntfy->u.isp24.status; 1706 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1707 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1708 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1709 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1710 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1711 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1712 nack->u.isp24.srr_reject_code = srr_reject_code; 1713 nack->u.isp24.srr_reject_code_expl = srr_explan; 1714 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1715 1716 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1717 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1718 vha->vp_idx, nack->u.isp24.status); 1719 1720 /* Memory Barrier */ 1721 wmb(); 1722 qla2x00_start_iocbs(vha, qpair->req); 1723 } 1724 1725 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1726 { 1727 struct scsi_qla_host *vha = mcmd->vha; 1728 struct qla_hw_data *ha = vha->hw; 1729 struct abts_resp_to_24xx *resp; 1730 __le32 f_ctl; 1731 uint32_t h; 1732 uint8_t *p; 1733 int rc; 1734 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1735 struct qla_qpair *qpair = mcmd->qpair; 1736 1737 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1738 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1739 ha, mcmd->fc_tm_rsp); 1740 1741 rc = qlt_check_reserve_free_req(qpair, 1); 1742 if (rc) { 1743 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1744 "qla_target(%d): %s failed: unable to allocate request packet\n", 1745 vha->vp_idx, __func__); 1746 return -EAGAIN; 1747 } 1748 1749 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1750 memset(resp, 0, sizeof(*resp)); 1751 1752 h = qlt_make_handle(qpair); 1753 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1754 /* 1755 * CTIO type 7 from the firmware doesn't provide a way to 1756 * know the initiator's LOOP ID, hence we can't find 1757 * the session and, so, the command. 1758 */ 1759 return -EAGAIN; 1760 } else { 1761 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1762 } 1763 1764 resp->handle = make_handle(qpair->req->id, h); 1765 resp->entry_type = ABTS_RESP_24XX; 1766 resp->entry_count = 1; 1767 resp->nport_handle = abts->nport_handle; 1768 resp->vp_index = vha->vp_idx; 1769 resp->sof_type = abts->sof_type; 1770 resp->exchange_address = abts->exchange_address; 1771 resp->fcp_hdr_le = abts->fcp_hdr_le; 1772 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1773 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1774 F_CTL_SEQ_INITIATIVE); 1775 p = (uint8_t *)&f_ctl; 1776 resp->fcp_hdr_le.f_ctl[0] = *p++; 1777 resp->fcp_hdr_le.f_ctl[1] = *p++; 1778 resp->fcp_hdr_le.f_ctl[2] = *p; 1779 1780 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1781 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1782 1783 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1784 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1785 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1786 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1787 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1788 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1789 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1790 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1791 } else { 1792 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1793 resp->payload.ba_rjt.reason_code = 1794 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1795 /* Other bytes are zero */ 1796 } 1797 1798 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1799 1800 /* Memory Barrier */ 1801 wmb(); 1802 if (qpair->reqq_start_iocbs) 1803 qpair->reqq_start_iocbs(qpair); 1804 else 1805 qla2x00_start_iocbs(vha, qpair->req); 1806 1807 return rc; 1808 } 1809 1810 /* 1811 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1812 */ 1813 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1814 struct abts_recv_from_24xx *abts, uint32_t status, 1815 bool ids_reversed) 1816 { 1817 struct scsi_qla_host *vha = qpair->vha; 1818 struct qla_hw_data *ha = vha->hw; 1819 struct abts_resp_to_24xx *resp; 1820 __le32 f_ctl; 1821 uint8_t *p; 1822 1823 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1824 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1825 ha, abts, status); 1826 1827 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1828 NULL); 1829 if (!resp) { 1830 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1831 "qla_target(%d): %s failed: unable to allocate " 1832 "request packet", vha->vp_idx, __func__); 1833 return; 1834 } 1835 1836 resp->entry_type = ABTS_RESP_24XX; 1837 resp->handle = QLA_TGT_SKIP_HANDLE; 1838 resp->entry_count = 1; 1839 resp->nport_handle = abts->nport_handle; 1840 resp->vp_index = vha->vp_idx; 1841 resp->sof_type = abts->sof_type; 1842 resp->exchange_address = abts->exchange_address; 1843 resp->fcp_hdr_le = abts->fcp_hdr_le; 1844 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1845 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1846 F_CTL_SEQ_INITIATIVE); 1847 p = (uint8_t *)&f_ctl; 1848 resp->fcp_hdr_le.f_ctl[0] = *p++; 1849 resp->fcp_hdr_le.f_ctl[1] = *p++; 1850 resp->fcp_hdr_le.f_ctl[2] = *p; 1851 if (ids_reversed) { 1852 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1853 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1854 } else { 1855 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1856 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1857 } 1858 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1859 if (status == FCP_TMF_CMPL) { 1860 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1861 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1862 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1863 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1864 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1865 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1866 } else { 1867 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1868 resp->payload.ba_rjt.reason_code = 1869 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1870 /* Other bytes are zero */ 1871 } 1872 1873 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1874 1875 /* Memory Barrier */ 1876 wmb(); 1877 if (qpair->reqq_start_iocbs) 1878 qpair->reqq_start_iocbs(qpair); 1879 else 1880 qla2x00_start_iocbs(vha, qpair->req); 1881 } 1882 1883 /* 1884 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1885 */ 1886 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1887 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1888 { 1889 struct ctio7_to_24xx *ctio; 1890 u16 tmp; 1891 struct abts_recv_from_24xx *entry; 1892 1893 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1894 if (ctio == NULL) { 1895 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1896 "qla_target(%d): %s failed: unable to allocate " 1897 "request packet\n", vha->vp_idx, __func__); 1898 return; 1899 } 1900 1901 if (mcmd) 1902 /* abts from remote port */ 1903 entry = &mcmd->orig_iocb.abts; 1904 else 1905 /* abts from this driver. */ 1906 entry = (struct abts_recv_from_24xx *)pkt; 1907 1908 /* 1909 * We've got on entrance firmware's response on by us generated 1910 * ABTS response. So, in it ID fields are reversed. 1911 */ 1912 1913 ctio->entry_type = CTIO_TYPE7; 1914 ctio->entry_count = 1; 1915 ctio->nport_handle = entry->nport_handle; 1916 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1917 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1918 ctio->vp_index = vha->vp_idx; 1919 ctio->exchange_addr = entry->exchange_addr_to_abort; 1920 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1921 1922 if (mcmd) { 1923 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1924 1925 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1926 tmp |= (mcmd->abort_io_attr << 9); 1927 else if (qpair->retry_term_cnt & 1) 1928 tmp |= (0x4 << 9); 1929 } else { 1930 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1931 1932 if (qpair->retry_term_cnt & 1) 1933 tmp |= (0x4 << 9); 1934 } 1935 ctio->u.status1.flags = cpu_to_le16(tmp); 1936 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1937 1938 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1939 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1940 le16_to_cpu(ctio->u.status1.flags), 1941 le16_to_cpu(ctio->u.status1.ox_id), 1942 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1943 1944 /* Memory Barrier */ 1945 wmb(); 1946 if (qpair->reqq_start_iocbs) 1947 qpair->reqq_start_iocbs(qpair); 1948 else 1949 qla2x00_start_iocbs(vha, qpair->req); 1950 1951 if (mcmd) 1952 qlt_build_abts_resp_iocb(mcmd); 1953 else 1954 qlt_24xx_send_abts_resp(qpair, 1955 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1956 1957 } 1958 1959 /* drop cmds for the given lun 1960 * XXX only looks for cmds on the port through which lun reset was recieved 1961 * XXX does not go through the list of other port (which may have cmds 1962 * for the same lun) 1963 */ 1964 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1965 { 1966 struct qla_tgt_sess_op *op; 1967 struct qla_tgt_cmd *cmd; 1968 uint32_t key; 1969 unsigned long flags; 1970 1971 key = sid_to_key(s_id); 1972 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1973 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1974 uint32_t op_key; 1975 u64 op_lun; 1976 1977 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1978 op_lun = scsilun_to_int( 1979 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1980 if (op_key == key && op_lun == lun) 1981 op->aborted = true; 1982 } 1983 1984 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1985 uint32_t op_key; 1986 u64 op_lun; 1987 1988 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1989 op_lun = scsilun_to_int( 1990 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1991 if (op_key == key && op_lun == lun) 1992 op->aborted = true; 1993 } 1994 1995 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1996 uint32_t cmd_key; 1997 u64 cmd_lun; 1998 1999 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2000 cmd_lun = scsilun_to_int( 2001 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2002 if (cmd_key == key && cmd_lun == lun) 2003 cmd->aborted = 1; 2004 } 2005 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2006 } 2007 2008 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2009 uint64_t unpacked_lun) 2010 { 2011 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2012 struct qla_qpair_hint *h = NULL; 2013 2014 if (vha->flags.qpairs_available) { 2015 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2016 if (!h) 2017 h = &tgt->qphints[0]; 2018 } else { 2019 h = &tgt->qphints[0]; 2020 } 2021 2022 return h; 2023 } 2024 2025 static void qlt_do_tmr_work(struct work_struct *work) 2026 { 2027 struct qla_tgt_mgmt_cmd *mcmd = 2028 container_of(work, struct qla_tgt_mgmt_cmd, work); 2029 struct qla_hw_data *ha = mcmd->vha->hw; 2030 int rc; 2031 uint32_t tag; 2032 unsigned long flags; 2033 2034 switch (mcmd->tmr_func) { 2035 case QLA_TGT_ABTS: 2036 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2037 break; 2038 default: 2039 tag = 0; 2040 break; 2041 } 2042 2043 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2044 mcmd->tmr_func, tag); 2045 2046 if (rc != 0) { 2047 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2048 switch (mcmd->tmr_func) { 2049 case QLA_TGT_ABTS: 2050 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2051 qlt_build_abts_resp_iocb(mcmd); 2052 break; 2053 case QLA_TGT_LUN_RESET: 2054 case QLA_TGT_CLEAR_TS: 2055 case QLA_TGT_ABORT_TS: 2056 case QLA_TGT_CLEAR_ACA: 2057 case QLA_TGT_TARGET_RESET: 2058 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2059 qla_sam_status); 2060 break; 2061 2062 case QLA_TGT_ABORT_ALL: 2063 case QLA_TGT_NEXUS_LOSS_SESS: 2064 case QLA_TGT_NEXUS_LOSS: 2065 qlt_send_notify_ack(mcmd->qpair, 2066 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2067 break; 2068 } 2069 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2070 2071 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2072 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2073 mcmd->vha->vp_idx, rc); 2074 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2075 } 2076 } 2077 2078 /* ha->hardware_lock supposed to be held on entry */ 2079 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2080 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2081 { 2082 struct qla_hw_data *ha = vha->hw; 2083 struct qla_tgt_mgmt_cmd *mcmd; 2084 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2085 struct qla_tgt_cmd *abort_cmd; 2086 2087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2088 "qla_target(%d): task abort (tag=%d)\n", 2089 vha->vp_idx, abts->exchange_addr_to_abort); 2090 2091 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2092 if (mcmd == NULL) { 2093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2094 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2095 vha->vp_idx, __func__); 2096 return -ENOMEM; 2097 } 2098 memset(mcmd, 0, sizeof(*mcmd)); 2099 mcmd->cmd_type = TYPE_TGT_TMCMD; 2100 mcmd->sess = sess; 2101 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2102 mcmd->reset_count = ha->base_qpair->chip_reset; 2103 mcmd->tmr_func = QLA_TGT_ABTS; 2104 mcmd->qpair = h->qpair; 2105 mcmd->vha = vha; 2106 2107 /* 2108 * LUN is looked up by target-core internally based on the passed 2109 * abts->exchange_addr_to_abort tag. 2110 */ 2111 mcmd->se_cmd.cpuid = h->cpuid; 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) 2116 return -EIO; 2117 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2118 2119 if (abort_cmd->qpair) { 2120 mcmd->qpair = abort_cmd->qpair; 2121 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2122 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2123 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2124 } 2125 2126 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2127 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2128 2129 return 0; 2130 } 2131 2132 /* 2133 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2134 */ 2135 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2136 struct abts_recv_from_24xx *abts) 2137 { 2138 struct qla_hw_data *ha = vha->hw; 2139 struct fc_port *sess; 2140 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2141 be_id_t s_id; 2142 int rc; 2143 unsigned long flags; 2144 2145 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2147 "qla_target(%d): ABTS: Abort Sequence not " 2148 "supported\n", vha->vp_idx); 2149 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2150 false); 2151 return; 2152 } 2153 2154 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2156 "qla_target(%d): ABTS: Unknown Exchange " 2157 "Address received\n", vha->vp_idx); 2158 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2159 false); 2160 return; 2161 } 2162 2163 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2164 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2165 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2166 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2167 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2168 2169 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2170 2171 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2172 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2173 if (!sess) { 2174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2175 "qla_target(%d): task abort for non-existent session\n", 2176 vha->vp_idx); 2177 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2178 2179 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2180 false); 2181 return; 2182 } 2183 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2184 2185 2186 if (sess->deleted) { 2187 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2188 false); 2189 return; 2190 } 2191 2192 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2193 if (rc != 0) { 2194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2195 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2196 vha->vp_idx, rc); 2197 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2198 false); 2199 return; 2200 } 2201 } 2202 2203 /* 2204 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2205 */ 2206 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2207 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2208 { 2209 struct scsi_qla_host *ha = mcmd->vha; 2210 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2211 struct ctio7_to_24xx *ctio; 2212 uint16_t temp; 2213 2214 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2215 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2216 ha, atio, resp_code); 2217 2218 2219 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2220 if (ctio == NULL) { 2221 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2222 "qla_target(%d): %s failed: unable to allocate " 2223 "request packet\n", ha->vp_idx, __func__); 2224 return; 2225 } 2226 2227 ctio->entry_type = CTIO_TYPE7; 2228 ctio->entry_count = 1; 2229 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2230 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2231 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2232 ctio->vp_index = ha->vp_idx; 2233 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2234 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2235 temp = (atio->u.isp24.attr << 9)| 2236 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2237 ctio->u.status1.flags = cpu_to_le16(temp); 2238 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2239 ctio->u.status1.ox_id = cpu_to_le16(temp); 2240 ctio->u.status1.scsi_status = 2241 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2242 ctio->u.status1.response_len = cpu_to_le16(8); 2243 ctio->u.status1.sense_data[0] = resp_code; 2244 2245 /* Memory Barrier */ 2246 wmb(); 2247 if (qpair->reqq_start_iocbs) 2248 qpair->reqq_start_iocbs(qpair); 2249 else 2250 qla2x00_start_iocbs(ha, qpair->req); 2251 } 2252 2253 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2254 { 2255 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2256 } 2257 EXPORT_SYMBOL(qlt_free_mcmd); 2258 2259 /* 2260 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2261 * reacquire 2262 */ 2263 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2264 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2265 { 2266 struct atio_from_isp *atio = &cmd->atio; 2267 struct ctio7_to_24xx *ctio; 2268 uint16_t temp; 2269 struct scsi_qla_host *vha = cmd->vha; 2270 2271 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2272 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2273 "sense_key=%02x, asc=%02x, ascq=%02x", 2274 vha, atio, scsi_status, sense_key, asc, ascq); 2275 2276 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2277 if (!ctio) { 2278 ql_dbg(ql_dbg_async, vha, 0x3067, 2279 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2280 vha->host_no, __func__); 2281 goto out; 2282 } 2283 2284 ctio->entry_type = CTIO_TYPE7; 2285 ctio->entry_count = 1; 2286 ctio->handle = QLA_TGT_SKIP_HANDLE; 2287 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2288 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2289 ctio->vp_index = vha->vp_idx; 2290 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2291 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2292 temp = (atio->u.isp24.attr << 9) | 2293 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2294 ctio->u.status1.flags = cpu_to_le16(temp); 2295 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2296 ctio->u.status1.ox_id = cpu_to_le16(temp); 2297 ctio->u.status1.scsi_status = 2298 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2299 ctio->u.status1.response_len = cpu_to_le16(18); 2300 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2301 2302 if (ctio->u.status1.residual != 0) 2303 ctio->u.status1.scsi_status |= 2304 cpu_to_le16(SS_RESIDUAL_UNDER); 2305 2306 /* Fixed format sense data. */ 2307 ctio->u.status1.sense_data[0] = 0x70; 2308 ctio->u.status1.sense_data[2] = sense_key; 2309 /* Additional sense length */ 2310 ctio->u.status1.sense_data[7] = 0xa; 2311 /* ASC and ASCQ */ 2312 ctio->u.status1.sense_data[12] = asc; 2313 ctio->u.status1.sense_data[13] = ascq; 2314 2315 /* Memory Barrier */ 2316 wmb(); 2317 2318 if (qpair->reqq_start_iocbs) 2319 qpair->reqq_start_iocbs(qpair); 2320 else 2321 qla2x00_start_iocbs(vha, qpair->req); 2322 2323 out: 2324 return; 2325 } 2326 2327 /* callback from target fabric module code */ 2328 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2329 { 2330 struct scsi_qla_host *vha = mcmd->sess->vha; 2331 struct qla_hw_data *ha = vha->hw; 2332 unsigned long flags; 2333 struct qla_qpair *qpair = mcmd->qpair; 2334 bool free_mcmd = true; 2335 2336 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2337 "TM response mcmd (%p) status %#x state %#x", 2338 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2339 2340 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2341 2342 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2343 /* 2344 * Either the port is not online or this request was from 2345 * previous life, just abort the processing. 2346 */ 2347 ql_dbg(ql_dbg_async, vha, 0xe100, 2348 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2349 vha->flags.online, qla2x00_reset_active(vha), 2350 mcmd->reset_count, qpair->chip_reset); 2351 ha->tgt.tgt_ops->free_mcmd(mcmd); 2352 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2353 return; 2354 } 2355 2356 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2357 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2358 case ELS_LOGO: 2359 case ELS_PRLO: 2360 case ELS_TPRLO: 2361 ql_dbg(ql_dbg_disc, vha, 0x2106, 2362 "TM response logo %8phC status %#x state %#x", 2363 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2364 mcmd->flags); 2365 qlt_schedule_sess_for_deletion(mcmd->sess); 2366 break; 2367 default: 2368 qlt_send_notify_ack(vha->hw->base_qpair, 2369 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2370 break; 2371 } 2372 } else { 2373 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2374 qlt_build_abts_resp_iocb(mcmd); 2375 free_mcmd = false; 2376 } else 2377 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2378 mcmd->fc_tm_rsp); 2379 } 2380 /* 2381 * Make the callback for ->free_mcmd() to queue_work() and invoke 2382 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2383 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2384 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2385 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2386 * qlt_xmit_tm_rsp() returns here.. 2387 */ 2388 if (free_mcmd) 2389 ha->tgt.tgt_ops->free_mcmd(mcmd); 2390 2391 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2392 } 2393 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2394 2395 /* No locks */ 2396 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2397 { 2398 struct qla_tgt_cmd *cmd = prm->cmd; 2399 2400 BUG_ON(cmd->sg_cnt == 0); 2401 2402 prm->sg = (struct scatterlist *)cmd->sg; 2403 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2404 cmd->sg_cnt, cmd->dma_data_direction); 2405 if (unlikely(prm->seg_cnt == 0)) 2406 goto out_err; 2407 2408 prm->cmd->sg_mapped = 1; 2409 2410 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2411 /* 2412 * If greater than four sg entries then we need to allocate 2413 * the continuation entries 2414 */ 2415 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2416 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2417 QLA_TGT_DATASEGS_PER_CMD_24XX, 2418 QLA_TGT_DATASEGS_PER_CONT_24XX); 2419 } else { 2420 /* DIF */ 2421 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2422 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2423 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2424 prm->tot_dsds = prm->seg_cnt; 2425 } else 2426 prm->tot_dsds = prm->seg_cnt; 2427 2428 if (cmd->prot_sg_cnt) { 2429 prm->prot_sg = cmd->prot_sg; 2430 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2431 cmd->prot_sg, cmd->prot_sg_cnt, 2432 cmd->dma_data_direction); 2433 if (unlikely(prm->prot_seg_cnt == 0)) 2434 goto out_err; 2435 2436 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2437 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2438 /* Dif Bundling not support here */ 2439 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2440 cmd->blk_sz); 2441 prm->tot_dsds += prm->prot_seg_cnt; 2442 } else 2443 prm->tot_dsds += prm->prot_seg_cnt; 2444 } 2445 } 2446 2447 return 0; 2448 2449 out_err: 2450 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2451 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2452 0, prm->cmd->sg_cnt); 2453 return -1; 2454 } 2455 2456 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2457 { 2458 struct qla_hw_data *ha; 2459 struct qla_qpair *qpair; 2460 2461 if (!cmd->sg_mapped) 2462 return; 2463 2464 qpair = cmd->qpair; 2465 2466 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2467 cmd->dma_data_direction); 2468 cmd->sg_mapped = 0; 2469 2470 if (cmd->prot_sg_cnt) 2471 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2472 cmd->dma_data_direction); 2473 2474 if (!cmd->ctx) 2475 return; 2476 ha = vha->hw; 2477 if (cmd->ctx_dsd_alloced) 2478 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2479 2480 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2481 } 2482 2483 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2484 uint32_t req_cnt) 2485 { 2486 uint32_t cnt; 2487 struct req_que *req = qpair->req; 2488 2489 if (req->cnt < (req_cnt + 2)) { 2490 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2491 rd_reg_dword_relaxed(req->req_q_out)); 2492 2493 if (req->ring_index < cnt) 2494 req->cnt = cnt - req->ring_index; 2495 else 2496 req->cnt = req->length - (req->ring_index - cnt); 2497 2498 if (unlikely(req->cnt < (req_cnt + 2))) 2499 return -EAGAIN; 2500 } 2501 2502 req->cnt -= req_cnt; 2503 2504 return 0; 2505 } 2506 2507 /* 2508 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2509 */ 2510 static inline void *qlt_get_req_pkt(struct req_que *req) 2511 { 2512 /* Adjust ring index. */ 2513 req->ring_index++; 2514 if (req->ring_index == req->length) { 2515 req->ring_index = 0; 2516 req->ring_ptr = req->ring; 2517 } else { 2518 req->ring_ptr++; 2519 } 2520 return (cont_entry_t *)req->ring_ptr; 2521 } 2522 2523 /* ha->hardware_lock supposed to be held on entry */ 2524 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2525 { 2526 uint32_t h; 2527 int index; 2528 uint8_t found = 0; 2529 struct req_que *req = qpair->req; 2530 2531 h = req->current_outstanding_cmd; 2532 2533 for (index = 1; index < req->num_outstanding_cmds; index++) { 2534 h++; 2535 if (h == req->num_outstanding_cmds) 2536 h = 1; 2537 2538 if (h == QLA_TGT_SKIP_HANDLE) 2539 continue; 2540 2541 if (!req->outstanding_cmds[h]) { 2542 found = 1; 2543 break; 2544 } 2545 } 2546 2547 if (found) { 2548 req->current_outstanding_cmd = h; 2549 } else { 2550 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2551 "qla_target(%d): Ran out of empty cmd slots\n", 2552 qpair->vha->vp_idx); 2553 h = QLA_TGT_NULL_HANDLE; 2554 } 2555 2556 return h; 2557 } 2558 2559 /* ha->hardware_lock supposed to be held on entry */ 2560 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2561 struct qla_tgt_prm *prm) 2562 { 2563 uint32_t h; 2564 struct ctio7_to_24xx *pkt; 2565 struct atio_from_isp *atio = &prm->cmd->atio; 2566 uint16_t temp; 2567 2568 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2569 prm->pkt = pkt; 2570 memset(pkt, 0, sizeof(*pkt)); 2571 2572 pkt->entry_type = CTIO_TYPE7; 2573 pkt->entry_count = (uint8_t)prm->req_cnt; 2574 pkt->vp_index = prm->cmd->vp_idx; 2575 2576 h = qlt_make_handle(qpair); 2577 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2578 /* 2579 * CTIO type 7 from the firmware doesn't provide a way to 2580 * know the initiator's LOOP ID, hence we can't find 2581 * the session and, so, the command. 2582 */ 2583 return -EAGAIN; 2584 } else 2585 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2586 2587 pkt->handle = make_handle(qpair->req->id, h); 2588 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2589 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2590 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2591 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2592 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2593 temp = atio->u.isp24.attr << 9; 2594 pkt->u.status0.flags |= cpu_to_le16(temp); 2595 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2596 pkt->u.status0.ox_id = cpu_to_le16(temp); 2597 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2598 2599 return 0; 2600 } 2601 2602 /* 2603 * ha->hardware_lock supposed to be held on entry. We have already made sure 2604 * that there is sufficient amount of request entries to not drop it. 2605 */ 2606 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2607 { 2608 int cnt; 2609 struct dsd64 *cur_dsd; 2610 2611 /* Build continuation packets */ 2612 while (prm->seg_cnt > 0) { 2613 cont_a64_entry_t *cont_pkt64 = 2614 (cont_a64_entry_t *)qlt_get_req_pkt( 2615 prm->cmd->qpair->req); 2616 2617 /* 2618 * Make sure that from cont_pkt64 none of 2619 * 64-bit specific fields used for 32-bit 2620 * addressing. Cast to (cont_entry_t *) for 2621 * that. 2622 */ 2623 2624 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2625 2626 cont_pkt64->entry_count = 1; 2627 cont_pkt64->sys_define = 0; 2628 2629 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2630 cur_dsd = cont_pkt64->dsd; 2631 2632 /* Load continuation entry data segments */ 2633 for (cnt = 0; 2634 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2635 cnt++, prm->seg_cnt--) { 2636 append_dsd64(&cur_dsd, prm->sg); 2637 prm->sg = sg_next(prm->sg); 2638 } 2639 } 2640 } 2641 2642 /* 2643 * ha->hardware_lock supposed to be held on entry. We have already made sure 2644 * that there is sufficient amount of request entries to not drop it. 2645 */ 2646 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2647 { 2648 int cnt; 2649 struct dsd64 *cur_dsd; 2650 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2651 2652 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2653 2654 /* Setup packet address segment pointer */ 2655 cur_dsd = &pkt24->u.status0.dsd; 2656 2657 /* Set total data segment count */ 2658 if (prm->seg_cnt) 2659 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2660 2661 if (prm->seg_cnt == 0) { 2662 /* No data transfer */ 2663 cur_dsd->address = 0; 2664 cur_dsd->length = 0; 2665 return; 2666 } 2667 2668 /* If scatter gather */ 2669 2670 /* Load command entry data segments */ 2671 for (cnt = 0; 2672 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2673 cnt++, prm->seg_cnt--) { 2674 append_dsd64(&cur_dsd, prm->sg); 2675 prm->sg = sg_next(prm->sg); 2676 } 2677 2678 qlt_load_cont_data_segments(prm); 2679 } 2680 2681 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2682 { 2683 return cmd->bufflen > 0; 2684 } 2685 2686 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2687 { 2688 struct qla_tgt_cmd *cmd; 2689 struct scsi_qla_host *vha; 2690 2691 /* asc 0x10=dif error */ 2692 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2693 cmd = prm->cmd; 2694 vha = cmd->vha; 2695 /* ASCQ */ 2696 switch (prm->sense_buffer[13]) { 2697 case 1: 2698 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2699 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2700 "se_cmd=%p tag[%x]", 2701 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2702 cmd->atio.u.isp24.exchange_addr); 2703 break; 2704 case 2: 2705 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2706 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2707 "se_cmd=%p tag[%x]", 2708 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2709 cmd->atio.u.isp24.exchange_addr); 2710 break; 2711 case 3: 2712 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2713 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2714 "se_cmd=%p tag[%x]", 2715 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2716 cmd->atio.u.isp24.exchange_addr); 2717 break; 2718 default: 2719 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2720 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2721 "se_cmd=%p tag[%x]", 2722 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2723 cmd->atio.u.isp24.exchange_addr); 2724 break; 2725 } 2726 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2727 } 2728 } 2729 2730 /* 2731 * Called without ha->hardware_lock held 2732 */ 2733 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2734 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2735 uint32_t *full_req_cnt) 2736 { 2737 struct se_cmd *se_cmd = &cmd->se_cmd; 2738 struct qla_qpair *qpair = cmd->qpair; 2739 2740 prm->cmd = cmd; 2741 prm->tgt = cmd->tgt; 2742 prm->pkt = NULL; 2743 prm->rq_result = scsi_status; 2744 prm->sense_buffer = &cmd->sense_buffer[0]; 2745 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2746 prm->sg = NULL; 2747 prm->seg_cnt = -1; 2748 prm->req_cnt = 1; 2749 prm->residual = 0; 2750 prm->add_status_pkt = 0; 2751 prm->prot_sg = NULL; 2752 prm->prot_seg_cnt = 0; 2753 prm->tot_dsds = 0; 2754 2755 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2756 if (qlt_pci_map_calc_cnt(prm) != 0) 2757 return -EAGAIN; 2758 } 2759 2760 *full_req_cnt = prm->req_cnt; 2761 2762 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2763 prm->residual = se_cmd->residual_count; 2764 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2765 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2766 prm->residual, se_cmd->tag, 2767 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2768 cmd->bufflen, prm->rq_result); 2769 prm->rq_result |= SS_RESIDUAL_UNDER; 2770 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2771 prm->residual = se_cmd->residual_count; 2772 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2773 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2774 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2775 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2776 prm->rq_result |= SS_RESIDUAL_OVER; 2777 } 2778 2779 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2780 /* 2781 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2782 * ignored in *xmit_response() below 2783 */ 2784 if (qlt_has_data(cmd)) { 2785 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2786 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2787 (prm->rq_result != 0))) { 2788 prm->add_status_pkt = 1; 2789 (*full_req_cnt)++; 2790 } 2791 } 2792 } 2793 2794 return 0; 2795 } 2796 2797 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2798 int sending_sense) 2799 { 2800 if (cmd->qpair->enable_class_2) 2801 return 0; 2802 2803 if (sending_sense) 2804 return cmd->conf_compl_supported; 2805 else 2806 return cmd->qpair->enable_explicit_conf && 2807 cmd->conf_compl_supported; 2808 } 2809 2810 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2811 struct qla_tgt_prm *prm) 2812 { 2813 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2814 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2815 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2816 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2817 ctio->u.status0.flags |= cpu_to_le16( 2818 CTIO7_FLAGS_EXPLICIT_CONFORM | 2819 CTIO7_FLAGS_CONFORM_REQ); 2820 } 2821 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2822 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2823 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2824 int i; 2825 2826 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2827 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2828 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2829 "Skipping EXPLICIT_CONFORM and " 2830 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2831 "non GOOD status\n"); 2832 goto skip_explict_conf; 2833 } 2834 ctio->u.status1.flags |= cpu_to_le16( 2835 CTIO7_FLAGS_EXPLICIT_CONFORM | 2836 CTIO7_FLAGS_CONFORM_REQ); 2837 } 2838 skip_explict_conf: 2839 ctio->u.status1.flags &= 2840 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2841 ctio->u.status1.flags |= 2842 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2843 ctio->u.status1.scsi_status |= 2844 cpu_to_le16(SS_SENSE_LEN_VALID); 2845 ctio->u.status1.sense_length = 2846 cpu_to_le16(prm->sense_buffer_len); 2847 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2848 uint32_t v; 2849 2850 v = get_unaligned_be32( 2851 &((uint32_t *)prm->sense_buffer)[i]); 2852 put_unaligned_le32(v, 2853 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2854 } 2855 qlt_print_dif_err(prm); 2856 2857 } else { 2858 ctio->u.status1.flags &= 2859 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2860 ctio->u.status1.flags |= 2861 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2862 ctio->u.status1.sense_length = 0; 2863 memset(ctio->u.status1.sense_data, 0, 2864 sizeof(ctio->u.status1.sense_data)); 2865 } 2866 2867 /* Sense with len > 24, is it possible ??? */ 2868 } 2869 2870 static inline int 2871 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2872 { 2873 switch (se_cmd->prot_op) { 2874 case TARGET_PROT_DOUT_INSERT: 2875 case TARGET_PROT_DIN_STRIP: 2876 if (ql2xenablehba_err_chk >= 1) 2877 return 1; 2878 break; 2879 case TARGET_PROT_DOUT_PASS: 2880 case TARGET_PROT_DIN_PASS: 2881 if (ql2xenablehba_err_chk >= 2) 2882 return 1; 2883 break; 2884 case TARGET_PROT_DIN_INSERT: 2885 case TARGET_PROT_DOUT_STRIP: 2886 return 1; 2887 default: 2888 break; 2889 } 2890 return 0; 2891 } 2892 2893 static inline int 2894 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2895 { 2896 switch (se_cmd->prot_op) { 2897 case TARGET_PROT_DIN_INSERT: 2898 case TARGET_PROT_DOUT_INSERT: 2899 case TARGET_PROT_DIN_STRIP: 2900 case TARGET_PROT_DOUT_STRIP: 2901 case TARGET_PROT_DIN_PASS: 2902 case TARGET_PROT_DOUT_PASS: 2903 return 1; 2904 default: 2905 return 0; 2906 } 2907 return 0; 2908 } 2909 2910 /* 2911 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2912 */ 2913 static void 2914 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2915 uint16_t *pfw_prot_opts) 2916 { 2917 struct se_cmd *se_cmd = &cmd->se_cmd; 2918 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2919 scsi_qla_host_t *vha = cmd->tgt->vha; 2920 struct qla_hw_data *ha = vha->hw; 2921 uint32_t t32 = 0; 2922 2923 /* 2924 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2925 * have been immplemented by TCM, before AppTag is avail. 2926 * Look for modesense_handlers[] 2927 */ 2928 ctx->app_tag = 0; 2929 ctx->app_tag_mask[0] = 0x0; 2930 ctx->app_tag_mask[1] = 0x0; 2931 2932 if (IS_PI_UNINIT_CAPABLE(ha)) { 2933 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2934 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2935 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2936 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2937 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2938 } 2939 2940 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2941 2942 switch (se_cmd->prot_type) { 2943 case TARGET_DIF_TYPE0_PROT: 2944 /* 2945 * No check for ql2xenablehba_err_chk, as it 2946 * would be an I/O error if hba tag generation 2947 * is not done. 2948 */ 2949 ctx->ref_tag = cpu_to_le32(lba); 2950 /* enable ALL bytes of the ref tag */ 2951 ctx->ref_tag_mask[0] = 0xff; 2952 ctx->ref_tag_mask[1] = 0xff; 2953 ctx->ref_tag_mask[2] = 0xff; 2954 ctx->ref_tag_mask[3] = 0xff; 2955 break; 2956 case TARGET_DIF_TYPE1_PROT: 2957 /* 2958 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2959 * REF tag, and 16 bit app tag. 2960 */ 2961 ctx->ref_tag = cpu_to_le32(lba); 2962 if (!qla_tgt_ref_mask_check(se_cmd) || 2963 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2964 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2965 break; 2966 } 2967 /* enable ALL bytes of the ref tag */ 2968 ctx->ref_tag_mask[0] = 0xff; 2969 ctx->ref_tag_mask[1] = 0xff; 2970 ctx->ref_tag_mask[2] = 0xff; 2971 ctx->ref_tag_mask[3] = 0xff; 2972 break; 2973 case TARGET_DIF_TYPE2_PROT: 2974 /* 2975 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2976 * tag has to match LBA in CDB + N 2977 */ 2978 ctx->ref_tag = cpu_to_le32(lba); 2979 if (!qla_tgt_ref_mask_check(se_cmd) || 2980 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2981 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2982 break; 2983 } 2984 /* enable ALL bytes of the ref tag */ 2985 ctx->ref_tag_mask[0] = 0xff; 2986 ctx->ref_tag_mask[1] = 0xff; 2987 ctx->ref_tag_mask[2] = 0xff; 2988 ctx->ref_tag_mask[3] = 0xff; 2989 break; 2990 case TARGET_DIF_TYPE3_PROT: 2991 /* For TYPE 3 protection: 16 bit GUARD only */ 2992 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2993 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2994 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2995 break; 2996 } 2997 } 2998 2999 static inline int 3000 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3001 { 3002 struct dsd64 *cur_dsd; 3003 uint32_t transfer_length = 0; 3004 uint32_t data_bytes; 3005 uint32_t dif_bytes; 3006 uint8_t bundling = 1; 3007 struct crc_context *crc_ctx_pkt = NULL; 3008 struct qla_hw_data *ha; 3009 struct ctio_crc2_to_fw *pkt; 3010 dma_addr_t crc_ctx_dma; 3011 uint16_t fw_prot_opts = 0; 3012 struct qla_tgt_cmd *cmd = prm->cmd; 3013 struct se_cmd *se_cmd = &cmd->se_cmd; 3014 uint32_t h; 3015 struct atio_from_isp *atio = &prm->cmd->atio; 3016 struct qla_tc_param tc; 3017 uint16_t t16; 3018 scsi_qla_host_t *vha = cmd->vha; 3019 3020 ha = vha->hw; 3021 3022 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3023 prm->pkt = pkt; 3024 memset(pkt, 0, sizeof(*pkt)); 3025 3026 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3027 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3028 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3029 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3030 3031 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3032 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3033 bundling = 0; 3034 3035 /* Compute dif len and adjust data len to incude protection */ 3036 data_bytes = cmd->bufflen; 3037 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3038 3039 switch (se_cmd->prot_op) { 3040 case TARGET_PROT_DIN_INSERT: 3041 case TARGET_PROT_DOUT_STRIP: 3042 transfer_length = data_bytes; 3043 if (cmd->prot_sg_cnt) 3044 data_bytes += dif_bytes; 3045 break; 3046 case TARGET_PROT_DIN_STRIP: 3047 case TARGET_PROT_DOUT_INSERT: 3048 case TARGET_PROT_DIN_PASS: 3049 case TARGET_PROT_DOUT_PASS: 3050 transfer_length = data_bytes + dif_bytes; 3051 break; 3052 default: 3053 BUG(); 3054 break; 3055 } 3056 3057 if (!qlt_hba_err_chk_enabled(se_cmd)) 3058 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3059 /* HBA error checking enabled */ 3060 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3061 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3062 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3063 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3064 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3065 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3066 } 3067 3068 switch (se_cmd->prot_op) { 3069 case TARGET_PROT_DIN_INSERT: 3070 case TARGET_PROT_DOUT_INSERT: 3071 fw_prot_opts |= PO_MODE_DIF_INSERT; 3072 break; 3073 case TARGET_PROT_DIN_STRIP: 3074 case TARGET_PROT_DOUT_STRIP: 3075 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3076 break; 3077 case TARGET_PROT_DIN_PASS: 3078 case TARGET_PROT_DOUT_PASS: 3079 fw_prot_opts |= PO_MODE_DIF_PASS; 3080 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3081 break; 3082 default:/* Normal Request */ 3083 fw_prot_opts |= PO_MODE_DIF_PASS; 3084 break; 3085 } 3086 3087 /* ---- PKT ---- */ 3088 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3089 pkt->entry_type = CTIO_CRC2; 3090 pkt->entry_count = 1; 3091 pkt->vp_index = cmd->vp_idx; 3092 3093 h = qlt_make_handle(qpair); 3094 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3095 /* 3096 * CTIO type 7 from the firmware doesn't provide a way to 3097 * know the initiator's LOOP ID, hence we can't find 3098 * the session and, so, the command. 3099 */ 3100 return -EAGAIN; 3101 } else 3102 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3103 3104 pkt->handle = make_handle(qpair->req->id, h); 3105 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3106 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3107 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3108 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3109 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3110 3111 /* silence compile warning */ 3112 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3113 pkt->ox_id = cpu_to_le16(t16); 3114 3115 t16 = (atio->u.isp24.attr << 9); 3116 pkt->flags |= cpu_to_le16(t16); 3117 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3118 3119 /* Set transfer direction */ 3120 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3121 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3122 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3123 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3124 3125 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3126 /* Fibre channel byte count */ 3127 pkt->transfer_length = cpu_to_le32(transfer_length); 3128 3129 /* ----- CRC context -------- */ 3130 3131 /* Allocate CRC context from global pool */ 3132 crc_ctx_pkt = cmd->ctx = 3133 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3134 3135 if (!crc_ctx_pkt) 3136 goto crc_queuing_error; 3137 3138 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3139 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3140 3141 /* Set handle */ 3142 crc_ctx_pkt->handle = pkt->handle; 3143 3144 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3145 3146 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3147 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3148 3149 if (!bundling) { 3150 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3151 } else { 3152 /* 3153 * Configure Bundling if we need to fetch interlaving 3154 * protection PCI accesses 3155 */ 3156 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3157 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3158 crc_ctx_pkt->u.bundling.dseg_count = 3159 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3160 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3161 } 3162 3163 /* Finish the common fields of CRC pkt */ 3164 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3165 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3166 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3167 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3168 3169 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3170 tc.vha = vha; 3171 tc.blk_sz = cmd->blk_sz; 3172 tc.bufflen = cmd->bufflen; 3173 tc.sg = cmd->sg; 3174 tc.prot_sg = cmd->prot_sg; 3175 tc.ctx = crc_ctx_pkt; 3176 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3177 3178 /* Walks data segments */ 3179 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3180 3181 if (!bundling && prm->prot_seg_cnt) { 3182 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3183 prm->tot_dsds, &tc)) 3184 goto crc_queuing_error; 3185 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3186 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3187 goto crc_queuing_error; 3188 3189 if (bundling && prm->prot_seg_cnt) { 3190 /* Walks dif segments */ 3191 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3192 3193 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3194 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3195 prm->prot_seg_cnt, cmd)) 3196 goto crc_queuing_error; 3197 } 3198 return QLA_SUCCESS; 3199 3200 crc_queuing_error: 3201 /* Cleanup will be performed by the caller */ 3202 qpair->req->outstanding_cmds[h] = NULL; 3203 3204 return QLA_FUNCTION_FAILED; 3205 } 3206 3207 /* 3208 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3209 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3210 */ 3211 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3212 uint8_t scsi_status) 3213 { 3214 struct scsi_qla_host *vha = cmd->vha; 3215 struct qla_qpair *qpair = cmd->qpair; 3216 struct ctio7_to_24xx *pkt; 3217 struct qla_tgt_prm prm; 3218 uint32_t full_req_cnt = 0; 3219 unsigned long flags = 0; 3220 int res; 3221 3222 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3223 (cmd->sess && cmd->sess->deleted)) { 3224 cmd->state = QLA_TGT_STATE_PROCESSED; 3225 res = 0; 3226 goto free; 3227 } 3228 3229 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3230 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3231 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3232 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3233 &cmd->se_cmd, qpair->id); 3234 3235 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3236 &full_req_cnt); 3237 if (unlikely(res != 0)) 3238 goto free; 3239 3240 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3241 3242 if (xmit_type == QLA_TGT_XMIT_STATUS) 3243 qpair->tgt_counters.core_qla_snd_status++; 3244 else 3245 qpair->tgt_counters.core_qla_que_buf++; 3246 3247 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3248 /* 3249 * Either the port is not online or this request was from 3250 * previous life, just abort the processing. 3251 */ 3252 cmd->state = QLA_TGT_STATE_PROCESSED; 3253 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3254 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3255 vha->flags.online, qla2x00_reset_active(vha), 3256 cmd->reset_count, qpair->chip_reset); 3257 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3258 res = 0; 3259 goto free; 3260 } 3261 3262 /* Does F/W have an IOCBs for this request */ 3263 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3264 if (unlikely(res)) 3265 goto out_unmap_unlock; 3266 3267 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3268 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3269 else 3270 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3271 if (unlikely(res != 0)) { 3272 qpair->req->cnt += full_req_cnt; 3273 goto out_unmap_unlock; 3274 } 3275 3276 pkt = (struct ctio7_to_24xx *)prm.pkt; 3277 3278 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3279 pkt->u.status0.flags |= 3280 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3281 CTIO7_FLAGS_STATUS_MODE_0); 3282 3283 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3284 qlt_load_data_segments(&prm); 3285 3286 if (prm.add_status_pkt == 0) { 3287 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3288 pkt->u.status0.scsi_status = 3289 cpu_to_le16(prm.rq_result); 3290 pkt->u.status0.residual = 3291 cpu_to_le32(prm.residual); 3292 pkt->u.status0.flags |= cpu_to_le16( 3293 CTIO7_FLAGS_SEND_STATUS); 3294 if (qlt_need_explicit_conf(cmd, 0)) { 3295 pkt->u.status0.flags |= 3296 cpu_to_le16( 3297 CTIO7_FLAGS_EXPLICIT_CONFORM | 3298 CTIO7_FLAGS_CONFORM_REQ); 3299 } 3300 } 3301 3302 } else { 3303 /* 3304 * We have already made sure that there is sufficient 3305 * amount of request entries to not drop HW lock in 3306 * req_pkt(). 3307 */ 3308 struct ctio7_to_24xx *ctio = 3309 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3310 qpair->req); 3311 3312 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3313 "Building additional status packet 0x%p.\n", 3314 ctio); 3315 3316 /* 3317 * T10Dif: ctio_crc2_to_fw overlay ontop of 3318 * ctio7_to_24xx 3319 */ 3320 memcpy(ctio, pkt, sizeof(*ctio)); 3321 /* reset back to CTIO7 */ 3322 ctio->entry_count = 1; 3323 ctio->entry_type = CTIO_TYPE7; 3324 ctio->dseg_count = 0; 3325 ctio->u.status1.flags &= ~cpu_to_le16( 3326 CTIO7_FLAGS_DATA_IN); 3327 3328 /* Real finish is ctio_m1's finish */ 3329 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3330 pkt->u.status0.flags |= cpu_to_le16( 3331 CTIO7_FLAGS_DONT_RET_CTIO); 3332 3333 /* qlt_24xx_init_ctio_to_isp will correct 3334 * all neccessary fields that's part of CTIO7. 3335 * There should be no residual of CTIO-CRC2 data. 3336 */ 3337 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3338 &prm); 3339 } 3340 } else 3341 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3342 3343 3344 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3345 cmd->cmd_sent_to_fw = 1; 3346 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3347 3348 /* Memory Barrier */ 3349 wmb(); 3350 if (qpair->reqq_start_iocbs) 3351 qpair->reqq_start_iocbs(qpair); 3352 else 3353 qla2x00_start_iocbs(vha, qpair->req); 3354 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3355 3356 return 0; 3357 3358 out_unmap_unlock: 3359 qlt_unmap_sg(vha, cmd); 3360 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3361 3362 free: 3363 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3364 return res; 3365 } 3366 EXPORT_SYMBOL(qlt_xmit_response); 3367 3368 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3369 { 3370 struct ctio7_to_24xx *pkt; 3371 struct scsi_qla_host *vha = cmd->vha; 3372 struct qla_tgt *tgt = cmd->tgt; 3373 struct qla_tgt_prm prm; 3374 unsigned long flags = 0; 3375 int res = 0; 3376 struct qla_qpair *qpair = cmd->qpair; 3377 3378 memset(&prm, 0, sizeof(prm)); 3379 prm.cmd = cmd; 3380 prm.tgt = tgt; 3381 prm.sg = NULL; 3382 prm.req_cnt = 1; 3383 3384 /* Calculate number of entries and segments required */ 3385 if (qlt_pci_map_calc_cnt(&prm) != 0) 3386 return -EAGAIN; 3387 3388 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3389 (cmd->sess && cmd->sess->deleted)) { 3390 /* 3391 * Either the port is not online or this request was from 3392 * previous life, just abort the processing. 3393 */ 3394 cmd->aborted = 1; 3395 cmd->write_data_transferred = 0; 3396 cmd->state = QLA_TGT_STATE_DATA_IN; 3397 vha->hw->tgt.tgt_ops->handle_data(cmd); 3398 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3399 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3400 vha->flags.online, qla2x00_reset_active(vha), 3401 cmd->reset_count, qpair->chip_reset); 3402 return 0; 3403 } 3404 3405 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3406 /* Does F/W have an IOCBs for this request */ 3407 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3408 if (res != 0) 3409 goto out_unlock_free_unmap; 3410 if (cmd->se_cmd.prot_op) 3411 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3412 else 3413 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3414 3415 if (unlikely(res != 0)) { 3416 qpair->req->cnt += prm.req_cnt; 3417 goto out_unlock_free_unmap; 3418 } 3419 3420 pkt = (struct ctio7_to_24xx *)prm.pkt; 3421 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3422 CTIO7_FLAGS_STATUS_MODE_0); 3423 3424 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3425 qlt_load_data_segments(&prm); 3426 3427 cmd->state = QLA_TGT_STATE_NEED_DATA; 3428 cmd->cmd_sent_to_fw = 1; 3429 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3430 3431 /* Memory Barrier */ 3432 wmb(); 3433 if (qpair->reqq_start_iocbs) 3434 qpair->reqq_start_iocbs(qpair); 3435 else 3436 qla2x00_start_iocbs(vha, qpair->req); 3437 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3438 3439 return res; 3440 3441 out_unlock_free_unmap: 3442 qlt_unmap_sg(vha, cmd); 3443 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3444 3445 return res; 3446 } 3447 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3448 3449 3450 /* 3451 * it is assumed either hardware_lock or qpair lock is held. 3452 */ 3453 static void 3454 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3455 struct ctio_crc_from_fw *sts) 3456 { 3457 uint8_t *ap = &sts->actual_dif[0]; 3458 uint8_t *ep = &sts->expected_dif[0]; 3459 uint64_t lba = cmd->se_cmd.t_task_lba; 3460 uint8_t scsi_status, sense_key, asc, ascq; 3461 unsigned long flags; 3462 struct scsi_qla_host *vha = cmd->vha; 3463 3464 cmd->trc_flags |= TRC_DIF_ERR; 3465 3466 cmd->a_guard = get_unaligned_be16(ap + 0); 3467 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3468 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3469 3470 cmd->e_guard = get_unaligned_be16(ep + 0); 3471 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3472 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3473 3474 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3475 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3476 3477 scsi_status = sense_key = asc = ascq = 0; 3478 3479 /* check appl tag */ 3480 if (cmd->e_app_tag != cmd->a_app_tag) { 3481 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3482 "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]", 3483 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3484 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3485 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3486 cmd->atio.u.isp24.fcp_hdr.ox_id); 3487 3488 cmd->dif_err_code = DIF_ERR_APP; 3489 scsi_status = SAM_STAT_CHECK_CONDITION; 3490 sense_key = ABORTED_COMMAND; 3491 asc = 0x10; 3492 ascq = 0x2; 3493 } 3494 3495 /* check ref tag */ 3496 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3497 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3498 "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] ", 3499 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3500 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3501 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3502 cmd->atio.u.isp24.fcp_hdr.ox_id); 3503 3504 cmd->dif_err_code = DIF_ERR_REF; 3505 scsi_status = SAM_STAT_CHECK_CONDITION; 3506 sense_key = ABORTED_COMMAND; 3507 asc = 0x10; 3508 ascq = 0x3; 3509 goto out; 3510 } 3511 3512 /* check guard */ 3513 if (cmd->e_guard != cmd->a_guard) { 3514 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3515 "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]", 3516 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3517 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3518 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3519 cmd->atio.u.isp24.fcp_hdr.ox_id); 3520 3521 cmd->dif_err_code = DIF_ERR_GRD; 3522 scsi_status = SAM_STAT_CHECK_CONDITION; 3523 sense_key = ABORTED_COMMAND; 3524 asc = 0x10; 3525 ascq = 0x1; 3526 } 3527 out: 3528 switch (cmd->state) { 3529 case QLA_TGT_STATE_NEED_DATA: 3530 /* handle_data will load DIF error code */ 3531 cmd->state = QLA_TGT_STATE_DATA_IN; 3532 vha->hw->tgt.tgt_ops->handle_data(cmd); 3533 break; 3534 default: 3535 spin_lock_irqsave(&cmd->cmd_lock, flags); 3536 if (cmd->aborted) { 3537 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3538 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3539 break; 3540 } 3541 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3542 3543 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3544 ascq); 3545 /* assume scsi status gets out on the wire. 3546 * Will not wait for completion. 3547 */ 3548 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3549 break; 3550 } 3551 } 3552 3553 /* If hardware_lock held on entry, might drop it, then reaquire */ 3554 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3555 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3556 struct imm_ntfy_from_isp *ntfy) 3557 { 3558 struct nack_to_isp *nack; 3559 struct qla_hw_data *ha = vha->hw; 3560 request_t *pkt; 3561 int ret = 0; 3562 3563 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3564 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3565 3566 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3567 if (pkt == NULL) { 3568 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3569 "qla_target(%d): %s failed: unable to allocate " 3570 "request packet\n", vha->vp_idx, __func__); 3571 return -ENOMEM; 3572 } 3573 3574 pkt->entry_type = NOTIFY_ACK_TYPE; 3575 pkt->entry_count = 1; 3576 pkt->handle = QLA_TGT_SKIP_HANDLE; 3577 3578 nack = (struct nack_to_isp *)pkt; 3579 nack->ox_id = ntfy->ox_id; 3580 3581 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3582 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3583 nack->u.isp24.flags = ntfy->u.isp24.flags & 3584 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3585 } 3586 3587 /* terminate */ 3588 nack->u.isp24.flags |= 3589 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3590 3591 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3592 nack->u.isp24.status = ntfy->u.isp24.status; 3593 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3594 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3595 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3596 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3597 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3598 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3599 3600 qla2x00_start_iocbs(vha, vha->req); 3601 return ret; 3602 } 3603 3604 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3605 struct imm_ntfy_from_isp *imm, int ha_locked) 3606 { 3607 int rc; 3608 3609 WARN_ON_ONCE(!ha_locked); 3610 rc = __qlt_send_term_imm_notif(vha, imm); 3611 pr_debug("rc = %d\n", rc); 3612 } 3613 3614 /* 3615 * If hardware_lock held on entry, might drop it, then reaquire 3616 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3617 */ 3618 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3619 struct qla_tgt_cmd *cmd, 3620 struct atio_from_isp *atio) 3621 { 3622 struct scsi_qla_host *vha = qpair->vha; 3623 struct ctio7_to_24xx *ctio24; 3624 struct qla_hw_data *ha = vha->hw; 3625 request_t *pkt; 3626 int ret = 0; 3627 uint16_t temp; 3628 3629 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3630 3631 if (cmd) 3632 vha = cmd->vha; 3633 3634 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3635 if (pkt == NULL) { 3636 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3637 "qla_target(%d): %s failed: unable to allocate " 3638 "request packet\n", vha->vp_idx, __func__); 3639 return -ENOMEM; 3640 } 3641 3642 if (cmd != NULL) { 3643 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3644 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3645 "qla_target(%d): Terminating cmd %p with " 3646 "incorrect state %d\n", vha->vp_idx, cmd, 3647 cmd->state); 3648 } else 3649 ret = 1; 3650 } 3651 3652 qpair->tgt_counters.num_term_xchg_sent++; 3653 pkt->entry_count = 1; 3654 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3655 3656 ctio24 = (struct ctio7_to_24xx *)pkt; 3657 ctio24->entry_type = CTIO_TYPE7; 3658 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3659 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3660 ctio24->vp_index = vha->vp_idx; 3661 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3662 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3663 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3664 CTIO7_FLAGS_TERMINATE; 3665 ctio24->u.status1.flags = cpu_to_le16(temp); 3666 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3667 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3668 3669 /* Memory Barrier */ 3670 wmb(); 3671 if (qpair->reqq_start_iocbs) 3672 qpair->reqq_start_iocbs(qpair); 3673 else 3674 qla2x00_start_iocbs(vha, qpair->req); 3675 return ret; 3676 } 3677 3678 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3679 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3680 int ul_abort) 3681 { 3682 struct scsi_qla_host *vha; 3683 unsigned long flags = 0; 3684 int rc; 3685 3686 /* why use different vha? NPIV */ 3687 if (cmd) 3688 vha = cmd->vha; 3689 else 3690 vha = qpair->vha; 3691 3692 if (ha_locked) { 3693 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3694 if (rc == -ENOMEM) 3695 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3696 goto done; 3697 } 3698 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3699 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3700 if (rc == -ENOMEM) 3701 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3702 3703 done: 3704 if (cmd && !ul_abort && !cmd->aborted) { 3705 if (cmd->sg_mapped) 3706 qlt_unmap_sg(vha, cmd); 3707 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3708 } 3709 3710 if (!ha_locked) 3711 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3712 3713 return; 3714 } 3715 3716 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3717 { 3718 struct list_head free_list; 3719 struct qla_tgt_cmd *cmd, *tcmd; 3720 3721 vha->hw->tgt.leak_exchg_thresh_hold = 3722 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3723 3724 cmd = tcmd = NULL; 3725 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3726 INIT_LIST_HEAD(&free_list); 3727 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3728 3729 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3730 list_del(&cmd->cmd_list); 3731 /* This cmd was never sent to TCM. There is no need 3732 * to schedule free or call free_cmd 3733 */ 3734 qlt_free_cmd(cmd); 3735 vha->hw->tgt.num_qfull_cmds_alloc--; 3736 } 3737 } 3738 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3739 } 3740 3741 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3742 { 3743 uint32_t total_leaked; 3744 3745 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3746 3747 if (vha->hw->tgt.leak_exchg_thresh_hold && 3748 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3749 3750 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3751 "Chip reset due to exchange starvation: %d/%d.\n", 3752 total_leaked, vha->hw->cur_fw_xcb_count); 3753 3754 if (IS_P3P_TYPE(vha->hw)) 3755 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3756 else 3757 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3758 qla2xxx_wake_dpc(vha); 3759 } 3760 3761 } 3762 3763 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3764 { 3765 struct qla_tgt *tgt = cmd->tgt; 3766 struct scsi_qla_host *vha = tgt->vha; 3767 struct se_cmd *se_cmd = &cmd->se_cmd; 3768 unsigned long flags; 3769 3770 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3771 "qla_target(%d): terminating exchange for aborted cmd=%p " 3772 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3773 se_cmd->tag); 3774 3775 spin_lock_irqsave(&cmd->cmd_lock, flags); 3776 if (cmd->aborted) { 3777 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3778 /* 3779 * It's normal to see 2 calls in this path: 3780 * 1) XFER Rdy completion + CMD_T_ABORT 3781 * 2) TCM TMR - drain_state_list 3782 */ 3783 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3784 "multiple abort. %p transport_state %x, t_state %x, " 3785 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3786 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3787 return -EIO; 3788 } 3789 cmd->aborted = 1; 3790 cmd->trc_flags |= TRC_ABORT; 3791 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3792 3793 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3794 return 0; 3795 } 3796 EXPORT_SYMBOL(qlt_abort_cmd); 3797 3798 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3799 { 3800 struct fc_port *sess = cmd->sess; 3801 3802 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3803 "%s: se_cmd[%p] ox_id %04x\n", 3804 __func__, &cmd->se_cmd, 3805 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3806 3807 BUG_ON(cmd->cmd_in_wq); 3808 3809 if (cmd->sg_mapped) 3810 qlt_unmap_sg(cmd->vha, cmd); 3811 3812 if (!cmd->q_full) 3813 qlt_decr_num_pend_cmds(cmd->vha); 3814 3815 BUG_ON(cmd->sg_mapped); 3816 cmd->jiffies_at_free = get_jiffies_64(); 3817 if (unlikely(cmd->free_sg)) 3818 kfree(cmd->sg); 3819 3820 if (!sess || !sess->se_sess) { 3821 WARN_ON(1); 3822 return; 3823 } 3824 cmd->jiffies_at_free = get_jiffies_64(); 3825 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3826 } 3827 EXPORT_SYMBOL(qlt_free_cmd); 3828 3829 /* 3830 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3831 */ 3832 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3833 struct qla_tgt_cmd *cmd, uint32_t status) 3834 { 3835 int term = 0; 3836 struct scsi_qla_host *vha = qpair->vha; 3837 3838 if (cmd->se_cmd.prot_op) 3839 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3840 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3841 "se_cmd=%p tag[%x] op %#x/%s", 3842 cmd->lba, cmd->lba, 3843 cmd->num_blks, &cmd->se_cmd, 3844 cmd->atio.u.isp24.exchange_addr, 3845 cmd->se_cmd.prot_op, 3846 prot_op_str(cmd->se_cmd.prot_op)); 3847 3848 if (ctio != NULL) { 3849 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3850 3851 term = !(c->flags & 3852 cpu_to_le16(OF_TERM_EXCH)); 3853 } else 3854 term = 1; 3855 3856 if (term) 3857 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3858 3859 return term; 3860 } 3861 3862 3863 /* ha->hardware_lock supposed to be held on entry */ 3864 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3865 struct rsp_que *rsp, uint32_t handle, void *ctio) 3866 { 3867 void *cmd = NULL; 3868 struct req_que *req; 3869 int qid = GET_QID(handle); 3870 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3871 3872 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3873 return NULL; 3874 3875 if (qid == rsp->req->id) { 3876 req = rsp->req; 3877 } else if (vha->hw->req_q_map[qid]) { 3878 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3879 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3880 vha->vp_idx, rsp->id, handle); 3881 req = vha->hw->req_q_map[qid]; 3882 } else { 3883 return NULL; 3884 } 3885 3886 h &= QLA_CMD_HANDLE_MASK; 3887 3888 if (h != QLA_TGT_NULL_HANDLE) { 3889 if (unlikely(h >= req->num_outstanding_cmds)) { 3890 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3891 "qla_target(%d): Wrong handle %x received\n", 3892 vha->vp_idx, handle); 3893 return NULL; 3894 } 3895 3896 cmd = req->outstanding_cmds[h]; 3897 if (unlikely(cmd == NULL)) { 3898 ql_dbg(ql_dbg_async, vha, 0xe053, 3899 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3900 vha->vp_idx, handle, req->id, rsp->id); 3901 return NULL; 3902 } 3903 req->outstanding_cmds[h] = NULL; 3904 } else if (ctio != NULL) { 3905 /* We can't get loop ID from CTIO7 */ 3906 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3907 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3908 "support NULL handles\n", vha->vp_idx); 3909 return NULL; 3910 } 3911 3912 return cmd; 3913 } 3914 3915 /* 3916 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3917 */ 3918 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3919 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3920 { 3921 struct qla_hw_data *ha = vha->hw; 3922 struct se_cmd *se_cmd; 3923 struct qla_tgt_cmd *cmd; 3924 struct qla_qpair *qpair = rsp->qpair; 3925 3926 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3927 /* That could happen only in case of an error/reset/abort */ 3928 if (status != CTIO_SUCCESS) { 3929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3930 "Intermediate CTIO received" 3931 " (status %x)\n", status); 3932 } 3933 return; 3934 } 3935 3936 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3937 if (cmd == NULL) 3938 return; 3939 3940 se_cmd = &cmd->se_cmd; 3941 cmd->cmd_sent_to_fw = 0; 3942 3943 qlt_unmap_sg(vha, cmd); 3944 3945 if (unlikely(status != CTIO_SUCCESS)) { 3946 switch (status & 0xFFFF) { 3947 case CTIO_INVALID_RX_ID: 3948 if (printk_ratelimit()) 3949 dev_info(&vha->hw->pdev->dev, 3950 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3951 vha->vp_idx, cmd->atio.u.isp24.attr, 3952 ((cmd->ctio_flags >> 9) & 0xf), 3953 cmd->ctio_flags); 3954 3955 break; 3956 case CTIO_LIP_RESET: 3957 case CTIO_TARGET_RESET: 3958 case CTIO_ABORTED: 3959 /* driver request abort via Terminate exchange */ 3960 case CTIO_TIMEOUT: 3961 /* They are OK */ 3962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3963 "qla_target(%d): CTIO with " 3964 "status %#x received, state %x, se_cmd %p, " 3965 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3966 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3967 status, cmd->state, se_cmd); 3968 break; 3969 3970 case CTIO_PORT_LOGGED_OUT: 3971 case CTIO_PORT_UNAVAILABLE: 3972 { 3973 int logged_out = 3974 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3975 3976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3977 "qla_target(%d): CTIO with %s status %x " 3978 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3979 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3980 status, cmd->state, se_cmd); 3981 3982 if (logged_out && cmd->sess) { 3983 /* 3984 * Session is already logged out, but we need 3985 * to notify initiator, who's not aware of this 3986 */ 3987 cmd->sess->send_els_logo = 1; 3988 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3989 "%s %d %8phC post del sess\n", 3990 __func__, __LINE__, cmd->sess->port_name); 3991 3992 qlt_schedule_sess_for_deletion(cmd->sess); 3993 } 3994 break; 3995 } 3996 case CTIO_DIF_ERROR: { 3997 struct ctio_crc_from_fw *crc = 3998 (struct ctio_crc_from_fw *)ctio; 3999 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4000 "qla_target(%d): CTIO with DIF_ERROR status %x " 4001 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4002 "expect_dif[0x%llx]\n", 4003 vha->vp_idx, status, cmd->state, se_cmd, 4004 *((u64 *)&crc->actual_dif[0]), 4005 *((u64 *)&crc->expected_dif[0])); 4006 4007 qlt_handle_dif_error(qpair, cmd, ctio); 4008 return; 4009 } 4010 default: 4011 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4012 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4013 vha->vp_idx, status, cmd->state, se_cmd); 4014 break; 4015 } 4016 4017 4018 /* "cmd->aborted" means 4019 * cmd is already aborted/terminated, we don't 4020 * need to terminate again. The exchange is already 4021 * cleaned up/freed at FW level. Just cleanup at driver 4022 * level. 4023 */ 4024 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4025 (!cmd->aborted)) { 4026 cmd->trc_flags |= TRC_CTIO_ERR; 4027 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4028 return; 4029 } 4030 } 4031 4032 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4033 cmd->trc_flags |= TRC_CTIO_DONE; 4034 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4035 cmd->state = QLA_TGT_STATE_DATA_IN; 4036 4037 if (status == CTIO_SUCCESS) 4038 cmd->write_data_transferred = 1; 4039 4040 ha->tgt.tgt_ops->handle_data(cmd); 4041 return; 4042 } else if (cmd->aborted) { 4043 cmd->trc_flags |= TRC_CTIO_ABORTED; 4044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4045 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4046 } else { 4047 cmd->trc_flags |= TRC_CTIO_STRANGE; 4048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4049 "qla_target(%d): A command in state (%d) should " 4050 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4051 } 4052 4053 if (unlikely(status != CTIO_SUCCESS) && 4054 !cmd->aborted) { 4055 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4056 dump_stack(); 4057 } 4058 4059 ha->tgt.tgt_ops->free_cmd(cmd); 4060 } 4061 4062 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4063 uint8_t task_codes) 4064 { 4065 int fcp_task_attr; 4066 4067 switch (task_codes) { 4068 case ATIO_SIMPLE_QUEUE: 4069 fcp_task_attr = TCM_SIMPLE_TAG; 4070 break; 4071 case ATIO_HEAD_OF_QUEUE: 4072 fcp_task_attr = TCM_HEAD_TAG; 4073 break; 4074 case ATIO_ORDERED_QUEUE: 4075 fcp_task_attr = TCM_ORDERED_TAG; 4076 break; 4077 case ATIO_ACA_QUEUE: 4078 fcp_task_attr = TCM_ACA_TAG; 4079 break; 4080 case ATIO_UNTAGGED: 4081 fcp_task_attr = TCM_SIMPLE_TAG; 4082 break; 4083 default: 4084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4085 "qla_target: unknown task code %x, use ORDERED instead\n", 4086 task_codes); 4087 fcp_task_attr = TCM_ORDERED_TAG; 4088 break; 4089 } 4090 4091 return fcp_task_attr; 4092 } 4093 4094 /* 4095 * Process context for I/O path into tcm_qla2xxx code 4096 */ 4097 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4098 { 4099 scsi_qla_host_t *vha = cmd->vha; 4100 struct qla_hw_data *ha = vha->hw; 4101 struct fc_port *sess = cmd->sess; 4102 struct atio_from_isp *atio = &cmd->atio; 4103 unsigned char *cdb; 4104 unsigned long flags; 4105 uint32_t data_length; 4106 int ret, fcp_task_attr, data_dir, bidi = 0; 4107 struct qla_qpair *qpair = cmd->qpair; 4108 4109 cmd->cmd_in_wq = 0; 4110 cmd->trc_flags |= TRC_DO_WORK; 4111 4112 if (cmd->aborted) { 4113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4114 "cmd with tag %u is aborted\n", 4115 cmd->atio.u.isp24.exchange_addr); 4116 goto out_term; 4117 } 4118 4119 spin_lock_init(&cmd->cmd_lock); 4120 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4121 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4122 4123 if (atio->u.isp24.fcp_cmnd.rddata && 4124 atio->u.isp24.fcp_cmnd.wrdata) { 4125 bidi = 1; 4126 data_dir = DMA_TO_DEVICE; 4127 } else if (atio->u.isp24.fcp_cmnd.rddata) 4128 data_dir = DMA_FROM_DEVICE; 4129 else if (atio->u.isp24.fcp_cmnd.wrdata) 4130 data_dir = DMA_TO_DEVICE; 4131 else 4132 data_dir = DMA_NONE; 4133 4134 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4135 atio->u.isp24.fcp_cmnd.task_attr); 4136 data_length = get_datalen_for_atio(atio); 4137 4138 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4139 fcp_task_attr, data_dir, bidi); 4140 if (ret != 0) 4141 goto out_term; 4142 /* 4143 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4144 */ 4145 ha->tgt.tgt_ops->put_sess(sess); 4146 return; 4147 4148 out_term: 4149 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4150 /* 4151 * cmd has not sent to target yet, so pass NULL as the second 4152 * argument to qlt_send_term_exchange() and free the memory here. 4153 */ 4154 cmd->trc_flags |= TRC_DO_WORK_ERR; 4155 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4156 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4157 4158 qlt_decr_num_pend_cmds(vha); 4159 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4160 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4161 4162 ha->tgt.tgt_ops->put_sess(sess); 4163 } 4164 4165 static void qlt_do_work(struct work_struct *work) 4166 { 4167 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4168 scsi_qla_host_t *vha = cmd->vha; 4169 unsigned long flags; 4170 4171 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4172 list_del(&cmd->cmd_list); 4173 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4174 4175 __qlt_do_work(cmd); 4176 } 4177 4178 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4179 { 4180 unsigned long flags; 4181 struct qla_hw_data *ha = vha->hw; 4182 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4183 void *node; 4184 u64 key = 0; 4185 4186 ql_log(ql_log_info, vha, 0x706c, 4187 "User update Number of Active Qpairs %d\n", 4188 ha->tgt.num_act_qpairs); 4189 4190 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4191 4192 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4193 btree_remove64(&tgt->lun_qpair_map, key); 4194 4195 ha->base_qpair->lun_cnt = 0; 4196 for (key = 0; key < ha->max_qpairs; key++) 4197 if (ha->queue_pair_map[key]) 4198 ha->queue_pair_map[key]->lun_cnt = 0; 4199 4200 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4201 } 4202 4203 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4204 struct qla_tgt_cmd *cmd) 4205 { 4206 struct qla_qpair *qpair, *qp; 4207 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4208 struct qla_qpair_hint *h; 4209 4210 if (vha->flags.qpairs_available) { 4211 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4212 if (unlikely(!h)) { 4213 /* spread lun to qpair ratio evently */ 4214 int lcnt = 0, rc; 4215 struct scsi_qla_host *base_vha = 4216 pci_get_drvdata(vha->hw->pdev); 4217 4218 qpair = vha->hw->base_qpair; 4219 if (qpair->lun_cnt == 0) { 4220 qpair->lun_cnt++; 4221 h = qla_qpair_to_hint(tgt, qpair); 4222 BUG_ON(!h); 4223 rc = btree_insert64(&tgt->lun_qpair_map, 4224 cmd->unpacked_lun, h, GFP_ATOMIC); 4225 if (rc) { 4226 qpair->lun_cnt--; 4227 ql_log(ql_log_info, vha, 0xd037, 4228 "Unable to insert lun %llx into lun_qpair_map\n", 4229 cmd->unpacked_lun); 4230 } 4231 goto out; 4232 } else { 4233 lcnt = qpair->lun_cnt; 4234 } 4235 4236 h = NULL; 4237 list_for_each_entry(qp, &base_vha->qp_list, 4238 qp_list_elem) { 4239 if (qp->lun_cnt == 0) { 4240 qp->lun_cnt++; 4241 h = qla_qpair_to_hint(tgt, qp); 4242 BUG_ON(!h); 4243 rc = btree_insert64(&tgt->lun_qpair_map, 4244 cmd->unpacked_lun, h, GFP_ATOMIC); 4245 if (rc) { 4246 qp->lun_cnt--; 4247 ql_log(ql_log_info, vha, 0xd038, 4248 "Unable to insert lun %llx into lun_qpair_map\n", 4249 cmd->unpacked_lun); 4250 } 4251 qpair = qp; 4252 goto out; 4253 } else { 4254 if (qp->lun_cnt < lcnt) { 4255 lcnt = qp->lun_cnt; 4256 qpair = qp; 4257 continue; 4258 } 4259 } 4260 } 4261 BUG_ON(!qpair); 4262 qpair->lun_cnt++; 4263 h = qla_qpair_to_hint(tgt, qpair); 4264 BUG_ON(!h); 4265 rc = btree_insert64(&tgt->lun_qpair_map, 4266 cmd->unpacked_lun, h, GFP_ATOMIC); 4267 if (rc) { 4268 qpair->lun_cnt--; 4269 ql_log(ql_log_info, vha, 0xd039, 4270 "Unable to insert lun %llx into lun_qpair_map\n", 4271 cmd->unpacked_lun); 4272 } 4273 } 4274 } else { 4275 h = &tgt->qphints[0]; 4276 } 4277 out: 4278 cmd->qpair = h->qpair; 4279 cmd->se_cmd.cpuid = h->cpuid; 4280 } 4281 4282 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4283 struct fc_port *sess, 4284 struct atio_from_isp *atio) 4285 { 4286 struct qla_tgt_cmd *cmd; 4287 4288 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4289 if (!cmd) 4290 return NULL; 4291 4292 cmd->cmd_type = TYPE_TGT_CMD; 4293 memcpy(&cmd->atio, atio, sizeof(*atio)); 4294 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4295 cmd->state = QLA_TGT_STATE_NEW; 4296 cmd->tgt = vha->vha_tgt.qla_tgt; 4297 qlt_incr_num_pend_cmds(vha); 4298 cmd->vha = vha; 4299 cmd->sess = sess; 4300 cmd->loop_id = sess->loop_id; 4301 cmd->conf_compl_supported = sess->conf_compl_supported; 4302 4303 cmd->trc_flags = 0; 4304 cmd->jiffies_at_alloc = get_jiffies_64(); 4305 4306 cmd->unpacked_lun = scsilun_to_int( 4307 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4308 qlt_assign_qpair(vha, cmd); 4309 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4310 cmd->vp_idx = vha->vp_idx; 4311 4312 return cmd; 4313 } 4314 4315 /* ha->hardware_lock supposed to be held on entry */ 4316 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4317 struct atio_from_isp *atio) 4318 { 4319 struct qla_hw_data *ha = vha->hw; 4320 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4321 struct fc_port *sess; 4322 struct qla_tgt_cmd *cmd; 4323 unsigned long flags; 4324 port_id_t id; 4325 4326 if (unlikely(tgt->tgt_stop)) { 4327 ql_dbg(ql_dbg_io, vha, 0x3061, 4328 "New command while device %p is shutting down\n", tgt); 4329 return -ENODEV; 4330 } 4331 4332 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4333 if (IS_SW_RESV_ADDR(id)) 4334 return -EBUSY; 4335 4336 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4337 if (unlikely(!sess)) 4338 return -EFAULT; 4339 4340 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4341 * session deletion, but it's still in sess_del_work wq */ 4342 if (sess->deleted) { 4343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4344 "New command while old session %p is being deleted\n", 4345 sess); 4346 return -EFAULT; 4347 } 4348 4349 /* 4350 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4351 */ 4352 if (!kref_get_unless_zero(&sess->sess_kref)) { 4353 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4354 "%s: kref_get fail, %8phC oxid %x \n", 4355 __func__, sess->port_name, 4356 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4357 return -EFAULT; 4358 } 4359 4360 cmd = qlt_get_tag(vha, sess, atio); 4361 if (!cmd) { 4362 ql_dbg(ql_dbg_io, vha, 0x3062, 4363 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4364 ha->tgt.tgt_ops->put_sess(sess); 4365 return -EBUSY; 4366 } 4367 4368 cmd->cmd_in_wq = 1; 4369 cmd->trc_flags |= TRC_NEW_CMD; 4370 4371 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4372 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4373 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4374 4375 INIT_WORK(&cmd->work, qlt_do_work); 4376 if (vha->flags.qpairs_available) { 4377 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4378 } else if (ha->msix_count) { 4379 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4380 queue_work_on(smp_processor_id(), qla_tgt_wq, 4381 &cmd->work); 4382 else 4383 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4384 &cmd->work); 4385 } else { 4386 queue_work(qla_tgt_wq, &cmd->work); 4387 } 4388 4389 return 0; 4390 } 4391 4392 /* ha->hardware_lock supposed to be held on entry */ 4393 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4394 int fn, void *iocb, int flags) 4395 { 4396 struct scsi_qla_host *vha = sess->vha; 4397 struct qla_hw_data *ha = vha->hw; 4398 struct qla_tgt_mgmt_cmd *mcmd; 4399 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4400 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4401 4402 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4403 if (!mcmd) { 4404 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4405 "qla_target(%d): Allocation of management " 4406 "command failed, some commands and their data could " 4407 "leak\n", vha->vp_idx); 4408 return -ENOMEM; 4409 } 4410 memset(mcmd, 0, sizeof(*mcmd)); 4411 mcmd->sess = sess; 4412 4413 if (iocb) { 4414 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4415 sizeof(mcmd->orig_iocb.imm_ntfy)); 4416 } 4417 mcmd->tmr_func = fn; 4418 mcmd->flags = flags; 4419 mcmd->reset_count = ha->base_qpair->chip_reset; 4420 mcmd->qpair = h->qpair; 4421 mcmd->vha = vha; 4422 mcmd->se_cmd.cpuid = h->cpuid; 4423 mcmd->unpacked_lun = lun; 4424 4425 switch (fn) { 4426 case QLA_TGT_LUN_RESET: 4427 case QLA_TGT_CLEAR_TS: 4428 case QLA_TGT_ABORT_TS: 4429 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4430 fallthrough; 4431 case QLA_TGT_CLEAR_ACA: 4432 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4433 mcmd->qpair = h->qpair; 4434 mcmd->se_cmd.cpuid = h->cpuid; 4435 break; 4436 4437 case QLA_TGT_TARGET_RESET: 4438 case QLA_TGT_NEXUS_LOSS_SESS: 4439 case QLA_TGT_NEXUS_LOSS: 4440 case QLA_TGT_ABORT_ALL: 4441 default: 4442 /* no-op */ 4443 break; 4444 } 4445 4446 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4447 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4448 &mcmd->work); 4449 4450 return 0; 4451 } 4452 4453 /* ha->hardware_lock supposed to be held on entry */ 4454 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4455 { 4456 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4457 struct qla_hw_data *ha = vha->hw; 4458 struct fc_port *sess; 4459 u64 unpacked_lun; 4460 int fn; 4461 unsigned long flags; 4462 4463 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4464 4465 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4466 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4467 a->u.isp24.fcp_hdr.s_id); 4468 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4469 4470 unpacked_lun = 4471 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4472 4473 if (sess == NULL || sess->deleted) 4474 return -EFAULT; 4475 4476 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4477 } 4478 4479 /* ha->hardware_lock supposed to be held on entry */ 4480 static int __qlt_abort_task(struct scsi_qla_host *vha, 4481 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4482 { 4483 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4484 struct qla_hw_data *ha = vha->hw; 4485 struct qla_tgt_mgmt_cmd *mcmd; 4486 u64 unpacked_lun; 4487 int rc; 4488 4489 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4490 if (mcmd == NULL) { 4491 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4492 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4493 vha->vp_idx, __func__); 4494 return -ENOMEM; 4495 } 4496 memset(mcmd, 0, sizeof(*mcmd)); 4497 4498 mcmd->sess = sess; 4499 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4500 sizeof(mcmd->orig_iocb.imm_ntfy)); 4501 4502 unpacked_lun = 4503 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4504 mcmd->reset_count = ha->base_qpair->chip_reset; 4505 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4506 mcmd->qpair = ha->base_qpair; 4507 4508 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4509 le16_to_cpu(iocb->u.isp2x.seq_id)); 4510 if (rc != 0) { 4511 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4512 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4513 vha->vp_idx, rc); 4514 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4515 return -EFAULT; 4516 } 4517 4518 return 0; 4519 } 4520 4521 /* ha->hardware_lock supposed to be held on entry */ 4522 static int qlt_abort_task(struct scsi_qla_host *vha, 4523 struct imm_ntfy_from_isp *iocb) 4524 { 4525 struct qla_hw_data *ha = vha->hw; 4526 struct fc_port *sess; 4527 int loop_id; 4528 unsigned long flags; 4529 4530 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4531 4532 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4533 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4534 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4535 4536 if (sess == NULL) { 4537 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4538 "qla_target(%d): task abort for unexisting " 4539 "session\n", vha->vp_idx); 4540 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4541 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4542 } 4543 4544 return __qlt_abort_task(vha, iocb, sess); 4545 } 4546 4547 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4548 { 4549 if (rc != MBS_COMMAND_COMPLETE) { 4550 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4551 "%s: se_sess %p / sess %p from" 4552 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4553 " LOGO failed: %#x\n", 4554 __func__, 4555 fcport->se_sess, 4556 fcport, 4557 fcport->port_name, fcport->loop_id, 4558 fcport->d_id.b.domain, fcport->d_id.b.area, 4559 fcport->d_id.b.al_pa, rc); 4560 } 4561 4562 fcport->logout_completed = 1; 4563 } 4564 4565 /* 4566 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4567 * 4568 * Schedules sessions with matching port_id/loop_id but different wwn for 4569 * deletion. Returns existing session with matching wwn if present. 4570 * Null otherwise. 4571 */ 4572 struct fc_port * 4573 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4574 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4575 { 4576 struct fc_port *sess = NULL, *other_sess; 4577 uint64_t other_wwn; 4578 4579 *conflict_sess = NULL; 4580 4581 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4582 4583 other_wwn = wwn_to_u64(other_sess->port_name); 4584 4585 if (wwn == other_wwn) { 4586 WARN_ON(sess); 4587 sess = other_sess; 4588 continue; 4589 } 4590 4591 /* find other sess with nport_id collision */ 4592 if (port_id.b24 == other_sess->d_id.b24) { 4593 if (loop_id != other_sess->loop_id) { 4594 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4595 "Invalidating sess %p loop_id %d wwn %llx.\n", 4596 other_sess, other_sess->loop_id, other_wwn); 4597 4598 /* 4599 * logout_on_delete is set by default, but another 4600 * session that has the same s_id/loop_id combo 4601 * might have cleared it when requested this session 4602 * deletion, so don't touch it 4603 */ 4604 qlt_schedule_sess_for_deletion(other_sess); 4605 } else { 4606 /* 4607 * Another wwn used to have our s_id/loop_id 4608 * kill the session, but don't free the loop_id 4609 */ 4610 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4611 "Invalidating sess %p loop_id %d wwn %llx.\n", 4612 other_sess, other_sess->loop_id, other_wwn); 4613 4614 other_sess->keep_nport_handle = 1; 4615 if (other_sess->disc_state != DSC_DELETED) 4616 *conflict_sess = other_sess; 4617 qlt_schedule_sess_for_deletion(other_sess); 4618 } 4619 continue; 4620 } 4621 4622 /* find other sess with nport handle collision */ 4623 if ((loop_id == other_sess->loop_id) && 4624 (loop_id != FC_NO_LOOP_ID)) { 4625 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4626 "Invalidating sess %p loop_id %d wwn %llx.\n", 4627 other_sess, other_sess->loop_id, other_wwn); 4628 4629 /* Same loop_id but different s_id 4630 * Ok to kill and logout */ 4631 qlt_schedule_sess_for_deletion(other_sess); 4632 } 4633 } 4634 4635 return sess; 4636 } 4637 4638 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4639 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4640 { 4641 struct qla_tgt_sess_op *op; 4642 struct qla_tgt_cmd *cmd; 4643 uint32_t key; 4644 int count = 0; 4645 unsigned long flags; 4646 4647 key = (((u32)s_id->b.domain << 16) | 4648 ((u32)s_id->b.area << 8) | 4649 ((u32)s_id->b.al_pa)); 4650 4651 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4652 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4653 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4654 4655 if (op_key == key) { 4656 op->aborted = true; 4657 count++; 4658 } 4659 } 4660 4661 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4662 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4663 4664 if (op_key == key) { 4665 op->aborted = true; 4666 count++; 4667 } 4668 } 4669 4670 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4671 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4672 4673 if (cmd_key == key) { 4674 cmd->aborted = 1; 4675 count++; 4676 } 4677 } 4678 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4679 4680 return count; 4681 } 4682 4683 static int qlt_handle_login(struct scsi_qla_host *vha, 4684 struct imm_ntfy_from_isp *iocb) 4685 { 4686 struct fc_port *sess = NULL, *conflict_sess = NULL; 4687 uint64_t wwn; 4688 port_id_t port_id; 4689 uint16_t loop_id, wd3_lo; 4690 int res = 0; 4691 struct qlt_plogi_ack_t *pla; 4692 unsigned long flags; 4693 4694 lockdep_assert_held(&vha->hw->hardware_lock); 4695 4696 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4697 4698 port_id.b.domain = iocb->u.isp24.port_id[2]; 4699 port_id.b.area = iocb->u.isp24.port_id[1]; 4700 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4701 port_id.b.rsvd_1 = 0; 4702 4703 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4704 4705 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4706 abort_cmds_for_s_id(vha, &port_id); 4707 4708 if (wwn) { 4709 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4710 sess = qlt_find_sess_invalidate_other(vha, wwn, 4711 port_id, loop_id, &conflict_sess); 4712 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4713 } else { 4714 ql_dbg(ql_dbg_disc, vha, 0xffff, 4715 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4716 __func__, __LINE__, loop_id, port_id.b24); 4717 qlt_send_term_imm_notif(vha, iocb, 1); 4718 goto out; 4719 } 4720 4721 if (IS_SW_RESV_ADDR(port_id)) { 4722 res = 1; 4723 goto out; 4724 } 4725 4726 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4727 if (!pla) { 4728 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4729 "%s %d %8phC Term INOT due to mem alloc fail", 4730 __func__, __LINE__, 4731 iocb->u.isp24.port_name); 4732 qlt_send_term_imm_notif(vha, iocb, 1); 4733 goto out; 4734 } 4735 4736 if (conflict_sess) { 4737 conflict_sess->login_gen++; 4738 qlt_plogi_ack_link(vha, pla, conflict_sess, 4739 QLT_PLOGI_LINK_CONFLICT); 4740 } 4741 4742 if (!sess) { 4743 pla->ref_count++; 4744 ql_dbg(ql_dbg_disc, vha, 0xffff, 4745 "%s %d %8phC post new sess\n", 4746 __func__, __LINE__, iocb->u.isp24.port_name); 4747 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4748 qla24xx_post_newsess_work(vha, &port_id, 4749 iocb->u.isp24.port_name, 4750 iocb->u.isp24.u.plogi.node_name, 4751 pla, 0); 4752 else 4753 qla24xx_post_newsess_work(vha, &port_id, 4754 iocb->u.isp24.port_name, NULL, 4755 pla, 0); 4756 4757 goto out; 4758 } 4759 4760 if (sess->disc_state == DSC_UPD_FCPORT) { 4761 u16 sec; 4762 4763 /* 4764 * Remote port registration is still going on from 4765 * previous login. Allow it to finish before we 4766 * accept the new login. 4767 */ 4768 sess->next_disc_state = DSC_DELETE_PEND; 4769 sec = jiffies_to_msecs(jiffies - 4770 sess->jiffies_at_registration) / 1000; 4771 if (sess->sec_since_registration < sec && sec && 4772 !(sec % 5)) { 4773 sess->sec_since_registration = sec; 4774 ql_dbg(ql_dbg_disc, vha, 0xffff, 4775 "%s %8phC - Slow Rport registration (%d Sec)\n", 4776 __func__, sess->port_name, sec); 4777 } 4778 4779 if (!conflict_sess) { 4780 list_del(&pla->list); 4781 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4782 } 4783 4784 qlt_send_term_imm_notif(vha, iocb, 1); 4785 goto out; 4786 } 4787 4788 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4789 sess->d_id = port_id; 4790 sess->login_gen++; 4791 4792 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4793 sess->fw_login_state = DSC_LS_PRLI_PEND; 4794 sess->local = 0; 4795 sess->loop_id = loop_id; 4796 sess->d_id = port_id; 4797 sess->fw_login_state = DSC_LS_PRLI_PEND; 4798 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4799 4800 if (wd3_lo & BIT_7) 4801 sess->conf_compl_supported = 1; 4802 4803 if ((wd3_lo & BIT_4) == 0) 4804 sess->port_type = FCT_INITIATOR; 4805 else 4806 sess->port_type = FCT_TARGET; 4807 4808 } else 4809 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4810 4811 4812 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4813 "%s %d %8phC DS %d\n", 4814 __func__, __LINE__, sess->port_name, sess->disc_state); 4815 4816 switch (sess->disc_state) { 4817 case DSC_DELETED: 4818 case DSC_LOGIN_PEND: 4819 qlt_plogi_ack_unref(vha, pla); 4820 break; 4821 4822 default: 4823 /* 4824 * Under normal circumstances we want to release nport handle 4825 * during LOGO process to avoid nport handle leaks inside FW. 4826 * The exception is when LOGO is done while another PLOGI with 4827 * the same nport handle is waiting as might be the case here. 4828 * Note: there is always a possibily of a race where session 4829 * deletion has already started for other reasons (e.g. ACL 4830 * removal) and now PLOGI arrives: 4831 * 1. if PLOGI arrived in FW after nport handle has been freed, 4832 * FW must have assigned this PLOGI a new/same handle and we 4833 * can proceed ACK'ing it as usual when session deletion 4834 * completes. 4835 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4836 * bit reached it, the handle has now been released. We'll 4837 * get an error when we ACK this PLOGI. Nothing will be sent 4838 * back to initiator. Initiator should eventually retry 4839 * PLOGI and situation will correct itself. 4840 */ 4841 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4842 (sess->d_id.b24 == port_id.b24)); 4843 4844 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4845 "%s %d %8phC post del sess\n", 4846 __func__, __LINE__, sess->port_name); 4847 4848 4849 qlt_schedule_sess_for_deletion(sess); 4850 break; 4851 } 4852 out: 4853 return res; 4854 } 4855 4856 /* 4857 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4858 */ 4859 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4860 struct imm_ntfy_from_isp *iocb) 4861 { 4862 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4863 struct qla_hw_data *ha = vha->hw; 4864 struct fc_port *sess = NULL, *conflict_sess = NULL; 4865 uint64_t wwn; 4866 port_id_t port_id; 4867 uint16_t loop_id; 4868 uint16_t wd3_lo; 4869 int res = 0; 4870 unsigned long flags; 4871 4872 lockdep_assert_held(&ha->hardware_lock); 4873 4874 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4875 4876 port_id.b.domain = iocb->u.isp24.port_id[2]; 4877 port_id.b.area = iocb->u.isp24.port_id[1]; 4878 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4879 port_id.b.rsvd_1 = 0; 4880 4881 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4882 4883 ql_dbg(ql_dbg_disc, vha, 0xf026, 4884 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4885 vha->vp_idx, iocb->u.isp24.port_id[2], 4886 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4887 iocb->u.isp24.status_subcode, loop_id, 4888 iocb->u.isp24.port_name); 4889 4890 /* res = 1 means ack at the end of thread 4891 * res = 0 means ack async/later. 4892 */ 4893 switch (iocb->u.isp24.status_subcode) { 4894 case ELS_PLOGI: 4895 res = qlt_handle_login(vha, iocb); 4896 break; 4897 4898 case ELS_PRLI: 4899 if (N2N_TOPO(ha)) { 4900 sess = qla2x00_find_fcport_by_wwpn(vha, 4901 iocb->u.isp24.port_name, 1); 4902 4903 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4904 ql_dbg(ql_dbg_disc, vha, 0xffff, 4905 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4906 __func__, __LINE__, 4907 iocb->u.isp24.port_name); 4908 qlt_send_term_imm_notif(vha, iocb, 1); 4909 break; 4910 } 4911 4912 res = qlt_handle_login(vha, iocb); 4913 break; 4914 } 4915 4916 if (IS_SW_RESV_ADDR(port_id)) { 4917 res = 1; 4918 break; 4919 } 4920 4921 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4922 4923 if (wwn) { 4924 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4925 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4926 loop_id, &conflict_sess); 4927 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4928 } 4929 4930 if (conflict_sess) { 4931 switch (conflict_sess->disc_state) { 4932 case DSC_DELETED: 4933 case DSC_DELETE_PEND: 4934 break; 4935 default: 4936 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4937 "PRLI with conflicting sess %p port %8phC\n", 4938 conflict_sess, conflict_sess->port_name); 4939 conflict_sess->fw_login_state = 4940 DSC_LS_PORT_UNAVAIL; 4941 qlt_send_term_imm_notif(vha, iocb, 1); 4942 res = 0; 4943 break; 4944 } 4945 } 4946 4947 if (sess != NULL) { 4948 bool delete = false; 4949 int sec; 4950 4951 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4952 switch (sess->fw_login_state) { 4953 case DSC_LS_PLOGI_PEND: 4954 case DSC_LS_PLOGI_COMP: 4955 case DSC_LS_PRLI_COMP: 4956 break; 4957 default: 4958 delete = true; 4959 break; 4960 } 4961 4962 switch (sess->disc_state) { 4963 case DSC_UPD_FCPORT: 4964 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4965 flags); 4966 4967 sec = jiffies_to_msecs(jiffies - 4968 sess->jiffies_at_registration)/1000; 4969 if (sess->sec_since_registration < sec && sec && 4970 !(sec % 5)) { 4971 sess->sec_since_registration = sec; 4972 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4973 "%s %8phC : Slow Rport registration(%d Sec)\n", 4974 __func__, sess->port_name, sec); 4975 } 4976 qlt_send_term_imm_notif(vha, iocb, 1); 4977 return 0; 4978 4979 case DSC_LOGIN_PEND: 4980 case DSC_GPDB: 4981 case DSC_LOGIN_COMPLETE: 4982 case DSC_ADISC: 4983 delete = false; 4984 break; 4985 default: 4986 break; 4987 } 4988 4989 if (delete) { 4990 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4991 flags); 4992 /* 4993 * Impatient initiator sent PRLI before last 4994 * PLOGI could finish. Will force him to re-try, 4995 * while last one finishes. 4996 */ 4997 ql_log(ql_log_warn, sess->vha, 0xf095, 4998 "sess %p PRLI received, before plogi ack.\n", 4999 sess); 5000 qlt_send_term_imm_notif(vha, iocb, 1); 5001 res = 0; 5002 break; 5003 } 5004 5005 /* 5006 * This shouldn't happen under normal circumstances, 5007 * since we have deleted the old session during PLOGI 5008 */ 5009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5010 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5011 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5012 5013 sess->local = 0; 5014 sess->loop_id = loop_id; 5015 sess->d_id = port_id; 5016 sess->fw_login_state = DSC_LS_PRLI_PEND; 5017 5018 if (wd3_lo & BIT_7) 5019 sess->conf_compl_supported = 1; 5020 5021 if ((wd3_lo & BIT_4) == 0) 5022 sess->port_type = FCT_INITIATOR; 5023 else 5024 sess->port_type = FCT_TARGET; 5025 5026 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5027 } 5028 res = 1; /* send notify ack */ 5029 5030 /* Make session global (not used in fabric mode) */ 5031 if (ha->current_topology != ISP_CFG_F) { 5032 if (sess) { 5033 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5034 "%s %d %8phC post nack\n", 5035 __func__, __LINE__, sess->port_name); 5036 qla24xx_post_nack_work(vha, sess, iocb, 5037 SRB_NACK_PRLI); 5038 res = 0; 5039 } else { 5040 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5041 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5042 qla2xxx_wake_dpc(vha); 5043 } 5044 } else { 5045 if (sess) { 5046 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5047 "%s %d %8phC post nack\n", 5048 __func__, __LINE__, sess->port_name); 5049 qla24xx_post_nack_work(vha, sess, iocb, 5050 SRB_NACK_PRLI); 5051 res = 0; 5052 } 5053 } 5054 break; 5055 5056 case ELS_TPRLO: 5057 if (le16_to_cpu(iocb->u.isp24.flags) & 5058 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5059 loop_id = 0xFFFF; 5060 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5061 res = 1; 5062 break; 5063 } 5064 fallthrough; 5065 case ELS_LOGO: 5066 case ELS_PRLO: 5067 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5068 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5069 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5070 5071 if (sess) { 5072 sess->login_gen++; 5073 sess->fw_login_state = DSC_LS_LOGO_PEND; 5074 sess->logo_ack_needed = 1; 5075 memcpy(sess->iocb, iocb, IOCB_SIZE); 5076 } 5077 5078 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5079 5080 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5081 "%s: logo %llx res %d sess %p ", 5082 __func__, wwn, res, sess); 5083 if (res == 0) { 5084 /* 5085 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5086 * for LOGO_ACK & sess delete 5087 */ 5088 BUG_ON(!sess); 5089 res = 0; 5090 } else { 5091 /* cmd did not go to upper layer. */ 5092 if (sess) { 5093 qlt_schedule_sess_for_deletion(sess); 5094 res = 0; 5095 } 5096 /* else logo will be ack */ 5097 } 5098 break; 5099 case ELS_PDISC: 5100 case ELS_ADISC: 5101 { 5102 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5103 5104 if (tgt->link_reinit_iocb_pending) { 5105 qlt_send_notify_ack(ha->base_qpair, 5106 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5107 tgt->link_reinit_iocb_pending = 0; 5108 } 5109 5110 sess = qla2x00_find_fcport_by_wwpn(vha, 5111 iocb->u.isp24.port_name, 1); 5112 if (sess) { 5113 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5114 "sess %p lid %d|%d DS %d LS %d\n", 5115 sess, sess->loop_id, loop_id, 5116 sess->disc_state, sess->fw_login_state); 5117 } 5118 5119 res = 1; /* send notify ack */ 5120 break; 5121 } 5122 5123 case ELS_FLOGI: /* should never happen */ 5124 default: 5125 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5126 "qla_target(%d): Unsupported ELS command %x " 5127 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5128 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5129 break; 5130 } 5131 5132 ql_dbg(ql_dbg_disc, vha, 0xf026, 5133 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5134 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5135 5136 return res; 5137 } 5138 5139 /* 5140 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5141 */ 5142 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5143 struct imm_ntfy_from_isp *iocb) 5144 { 5145 struct qla_hw_data *ha = vha->hw; 5146 uint32_t add_flags = 0; 5147 int send_notify_ack = 1; 5148 uint16_t status; 5149 5150 lockdep_assert_held(&ha->hardware_lock); 5151 5152 status = le16_to_cpu(iocb->u.isp2x.status); 5153 switch (status) { 5154 case IMM_NTFY_LIP_RESET: 5155 { 5156 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5157 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5158 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5159 iocb->u.isp24.status_subcode); 5160 5161 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5162 send_notify_ack = 0; 5163 break; 5164 } 5165 5166 case IMM_NTFY_LIP_LINK_REINIT: 5167 { 5168 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5169 5170 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5171 "qla_target(%d): LINK REINIT (loop %#x, " 5172 "subcode %x)\n", vha->vp_idx, 5173 le16_to_cpu(iocb->u.isp24.nport_handle), 5174 iocb->u.isp24.status_subcode); 5175 if (tgt->link_reinit_iocb_pending) { 5176 qlt_send_notify_ack(ha->base_qpair, 5177 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5178 } 5179 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5180 tgt->link_reinit_iocb_pending = 1; 5181 /* 5182 * QLogic requires to wait after LINK REINIT for possible 5183 * PDISC or ADISC ELS commands 5184 */ 5185 send_notify_ack = 0; 5186 break; 5187 } 5188 5189 case IMM_NTFY_PORT_LOGOUT: 5190 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5191 "qla_target(%d): Port logout (loop " 5192 "%#x, subcode %x)\n", vha->vp_idx, 5193 le16_to_cpu(iocb->u.isp24.nport_handle), 5194 iocb->u.isp24.status_subcode); 5195 5196 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5197 send_notify_ack = 0; 5198 /* The sessions will be cleared in the callback, if needed */ 5199 break; 5200 5201 case IMM_NTFY_GLBL_TPRLO: 5202 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5203 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5204 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5205 send_notify_ack = 0; 5206 /* The sessions will be cleared in the callback, if needed */ 5207 break; 5208 5209 case IMM_NTFY_PORT_CONFIG: 5210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5211 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5212 status); 5213 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5214 send_notify_ack = 0; 5215 /* The sessions will be cleared in the callback, if needed */ 5216 break; 5217 5218 case IMM_NTFY_GLBL_LOGO: 5219 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5220 "qla_target(%d): Link failure detected\n", 5221 vha->vp_idx); 5222 /* I_T nexus loss */ 5223 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5224 send_notify_ack = 0; 5225 break; 5226 5227 case IMM_NTFY_IOCB_OVERFLOW: 5228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5229 "qla_target(%d): Cannot provide requested " 5230 "capability (IOCB overflowed the immediate notify " 5231 "resource count)\n", vha->vp_idx); 5232 break; 5233 5234 case IMM_NTFY_ABORT_TASK: 5235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5236 "qla_target(%d): Abort Task (S %08x I %#x -> " 5237 "L %#x)\n", vha->vp_idx, 5238 le16_to_cpu(iocb->u.isp2x.seq_id), 5239 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5240 le16_to_cpu(iocb->u.isp2x.lun)); 5241 if (qlt_abort_task(vha, iocb) == 0) 5242 send_notify_ack = 0; 5243 break; 5244 5245 case IMM_NTFY_RESOURCE: 5246 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5247 "qla_target(%d): Out of resources, host %ld\n", 5248 vha->vp_idx, vha->host_no); 5249 break; 5250 5251 case IMM_NTFY_MSG_RX: 5252 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5253 "qla_target(%d): Immediate notify task %x\n", 5254 vha->vp_idx, iocb->u.isp2x.task_flags); 5255 break; 5256 5257 case IMM_NTFY_ELS: 5258 if (qlt_24xx_handle_els(vha, iocb) == 0) 5259 send_notify_ack = 0; 5260 break; 5261 default: 5262 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5263 "qla_target(%d): Received unknown immediate " 5264 "notify status %x\n", vha->vp_idx, status); 5265 break; 5266 } 5267 5268 if (send_notify_ack) 5269 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5270 0, 0); 5271 } 5272 5273 /* 5274 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5275 * This function sends busy to ISP 2xxx or 24xx. 5276 */ 5277 static int __qlt_send_busy(struct qla_qpair *qpair, 5278 struct atio_from_isp *atio, uint16_t status) 5279 { 5280 struct scsi_qla_host *vha = qpair->vha; 5281 struct ctio7_to_24xx *ctio24; 5282 struct qla_hw_data *ha = vha->hw; 5283 request_t *pkt; 5284 struct fc_port *sess = NULL; 5285 unsigned long flags; 5286 u16 temp; 5287 port_id_t id; 5288 5289 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5290 5291 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5292 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5293 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5294 if (!sess) { 5295 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5296 return 0; 5297 } 5298 /* Sending marker isn't necessary, since we called from ISR */ 5299 5300 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5301 if (!pkt) { 5302 ql_dbg(ql_dbg_io, vha, 0x3063, 5303 "qla_target(%d): %s failed: unable to allocate " 5304 "request packet", vha->vp_idx, __func__); 5305 return -ENOMEM; 5306 } 5307 5308 qpair->tgt_counters.num_q_full_sent++; 5309 pkt->entry_count = 1; 5310 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5311 5312 ctio24 = (struct ctio7_to_24xx *)pkt; 5313 ctio24->entry_type = CTIO_TYPE7; 5314 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5315 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5316 ctio24->vp_index = vha->vp_idx; 5317 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5318 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5319 temp = (atio->u.isp24.attr << 9) | 5320 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5321 CTIO7_FLAGS_DONT_RET_CTIO; 5322 ctio24->u.status1.flags = cpu_to_le16(temp); 5323 /* 5324 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5325 * if the explicit conformation is used. 5326 */ 5327 ctio24->u.status1.ox_id = 5328 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5329 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5330 5331 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5332 5333 if (ctio24->u.status1.residual != 0) 5334 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5335 5336 /* Memory Barrier */ 5337 wmb(); 5338 if (qpair->reqq_start_iocbs) 5339 qpair->reqq_start_iocbs(qpair); 5340 else 5341 qla2x00_start_iocbs(vha, qpair->req); 5342 return 0; 5343 } 5344 5345 /* 5346 * This routine is used to allocate a command for either a QFull condition 5347 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5348 * out previously. 5349 */ 5350 static void 5351 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5352 struct atio_from_isp *atio, uint16_t status, int qfull) 5353 { 5354 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5355 struct qla_hw_data *ha = vha->hw; 5356 struct fc_port *sess; 5357 struct qla_tgt_cmd *cmd; 5358 unsigned long flags; 5359 5360 if (unlikely(tgt->tgt_stop)) { 5361 ql_dbg(ql_dbg_io, vha, 0x300a, 5362 "New command while device %p is shutting down\n", tgt); 5363 return; 5364 } 5365 5366 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5367 vha->hw->tgt.num_qfull_cmds_dropped++; 5368 if (vha->hw->tgt.num_qfull_cmds_dropped > 5369 vha->qla_stats.stat_max_qfull_cmds_dropped) 5370 vha->qla_stats.stat_max_qfull_cmds_dropped = 5371 vha->hw->tgt.num_qfull_cmds_dropped; 5372 5373 ql_dbg(ql_dbg_io, vha, 0x3068, 5374 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5375 vha->vp_idx, __func__, 5376 vha->hw->tgt.num_qfull_cmds_dropped); 5377 5378 qlt_chk_exch_leak_thresh_hold(vha); 5379 return; 5380 } 5381 5382 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5383 (vha, atio->u.isp24.fcp_hdr.s_id); 5384 if (!sess) 5385 return; 5386 5387 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5388 if (!cmd) { 5389 ql_dbg(ql_dbg_io, vha, 0x3009, 5390 "qla_target(%d): %s: Allocation of cmd failed\n", 5391 vha->vp_idx, __func__); 5392 5393 vha->hw->tgt.num_qfull_cmds_dropped++; 5394 if (vha->hw->tgt.num_qfull_cmds_dropped > 5395 vha->qla_stats.stat_max_qfull_cmds_dropped) 5396 vha->qla_stats.stat_max_qfull_cmds_dropped = 5397 vha->hw->tgt.num_qfull_cmds_dropped; 5398 5399 qlt_chk_exch_leak_thresh_hold(vha); 5400 return; 5401 } 5402 5403 qlt_incr_num_pend_cmds(vha); 5404 INIT_LIST_HEAD(&cmd->cmd_list); 5405 memcpy(&cmd->atio, atio, sizeof(*atio)); 5406 5407 cmd->tgt = vha->vha_tgt.qla_tgt; 5408 cmd->vha = vha; 5409 cmd->reset_count = ha->base_qpair->chip_reset; 5410 cmd->q_full = 1; 5411 cmd->qpair = ha->base_qpair; 5412 5413 if (qfull) { 5414 cmd->q_full = 1; 5415 /* NOTE: borrowing the state field to carry the status */ 5416 cmd->state = status; 5417 } else 5418 cmd->term_exchg = 1; 5419 5420 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5421 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5422 5423 vha->hw->tgt.num_qfull_cmds_alloc++; 5424 if (vha->hw->tgt.num_qfull_cmds_alloc > 5425 vha->qla_stats.stat_max_qfull_cmds_alloc) 5426 vha->qla_stats.stat_max_qfull_cmds_alloc = 5427 vha->hw->tgt.num_qfull_cmds_alloc; 5428 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5429 } 5430 5431 int 5432 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5433 { 5434 struct scsi_qla_host *vha = qpair->vha; 5435 struct qla_hw_data *ha = vha->hw; 5436 unsigned long flags; 5437 struct qla_tgt_cmd *cmd, *tcmd; 5438 struct list_head free_list, q_full_list; 5439 int rc = 0; 5440 5441 if (list_empty(&ha->tgt.q_full_list)) 5442 return 0; 5443 5444 INIT_LIST_HEAD(&free_list); 5445 INIT_LIST_HEAD(&q_full_list); 5446 5447 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5448 if (list_empty(&ha->tgt.q_full_list)) { 5449 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5450 return 0; 5451 } 5452 5453 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5454 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5455 5456 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5457 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5458 if (cmd->q_full) 5459 /* cmd->state is a borrowed field to hold status */ 5460 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5461 else if (cmd->term_exchg) 5462 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5463 5464 if (rc == -ENOMEM) 5465 break; 5466 5467 if (cmd->q_full) 5468 ql_dbg(ql_dbg_io, vha, 0x3006, 5469 "%s: busy sent for ox_id[%04x]\n", __func__, 5470 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5471 else if (cmd->term_exchg) 5472 ql_dbg(ql_dbg_io, vha, 0x3007, 5473 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5474 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5475 else 5476 ql_dbg(ql_dbg_io, vha, 0x3008, 5477 "%s: Unexpected cmd in QFull list %p\n", __func__, 5478 cmd); 5479 5480 list_del(&cmd->cmd_list); 5481 list_add_tail(&cmd->cmd_list, &free_list); 5482 5483 /* piggy back on hardware_lock for protection */ 5484 vha->hw->tgt.num_qfull_cmds_alloc--; 5485 } 5486 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5487 5488 cmd = NULL; 5489 5490 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5491 list_del(&cmd->cmd_list); 5492 /* This cmd was never sent to TCM. There is no need 5493 * to schedule free or call free_cmd 5494 */ 5495 qlt_free_cmd(cmd); 5496 } 5497 5498 if (!list_empty(&q_full_list)) { 5499 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5500 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5501 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5502 } 5503 5504 return rc; 5505 } 5506 5507 static void 5508 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5509 uint16_t status) 5510 { 5511 int rc = 0; 5512 struct scsi_qla_host *vha = qpair->vha; 5513 5514 rc = __qlt_send_busy(qpair, atio, status); 5515 if (rc == -ENOMEM) 5516 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5517 } 5518 5519 static int 5520 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5521 struct atio_from_isp *atio, uint8_t ha_locked) 5522 { 5523 struct qla_hw_data *ha = vha->hw; 5524 unsigned long flags; 5525 5526 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5527 return 0; 5528 5529 if (!ha_locked) 5530 spin_lock_irqsave(&ha->hardware_lock, flags); 5531 qlt_send_busy(qpair, atio, qla_sam_status); 5532 if (!ha_locked) 5533 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5534 5535 return 1; 5536 } 5537 5538 /* ha->hardware_lock supposed to be held on entry */ 5539 /* called via callback from qla2xxx */ 5540 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5541 struct atio_from_isp *atio, uint8_t ha_locked) 5542 { 5543 struct qla_hw_data *ha = vha->hw; 5544 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5545 int rc; 5546 unsigned long flags = 0; 5547 5548 if (unlikely(tgt == NULL)) { 5549 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5550 "ATIO pkt, but no tgt (ha %p)", ha); 5551 return; 5552 } 5553 /* 5554 * In tgt_stop mode we also should allow all requests to pass. 5555 * Otherwise, some commands can stuck. 5556 */ 5557 5558 tgt->atio_irq_cmd_count++; 5559 5560 switch (atio->u.raw.entry_type) { 5561 case ATIO_TYPE7: 5562 if (unlikely(atio->u.isp24.exchange_addr == 5563 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5564 ql_dbg(ql_dbg_io, vha, 0x3065, 5565 "qla_target(%d): ATIO_TYPE7 " 5566 "received with UNKNOWN exchange address, " 5567 "sending QUEUE_FULL\n", vha->vp_idx); 5568 if (!ha_locked) 5569 spin_lock_irqsave(&ha->hardware_lock, flags); 5570 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5571 if (!ha_locked) 5572 spin_unlock_irqrestore(&ha->hardware_lock, 5573 flags); 5574 break; 5575 } 5576 5577 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5578 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5579 atio, ha_locked); 5580 if (rc != 0) { 5581 tgt->atio_irq_cmd_count--; 5582 return; 5583 } 5584 rc = qlt_handle_cmd_for_atio(vha, atio); 5585 } else { 5586 rc = qlt_handle_task_mgmt(vha, atio); 5587 } 5588 if (unlikely(rc != 0)) { 5589 if (!ha_locked) 5590 spin_lock_irqsave(&ha->hardware_lock, flags); 5591 switch (rc) { 5592 case -ENODEV: 5593 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5594 "qla_target: Unable to send command to target\n"); 5595 break; 5596 case -EBADF: 5597 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5598 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5599 qlt_send_term_exchange(ha->base_qpair, NULL, 5600 atio, 1, 0); 5601 break; 5602 case -EBUSY: 5603 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5604 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5605 vha->vp_idx); 5606 qlt_send_busy(ha->base_qpair, atio, 5607 tc_sam_status); 5608 break; 5609 default: 5610 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5611 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5612 vha->vp_idx); 5613 qlt_send_busy(ha->base_qpair, atio, 5614 qla_sam_status); 5615 break; 5616 } 5617 if (!ha_locked) 5618 spin_unlock_irqrestore(&ha->hardware_lock, 5619 flags); 5620 } 5621 break; 5622 5623 case IMMED_NOTIFY_TYPE: 5624 { 5625 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5626 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5627 "qla_target(%d): Received ATIO packet %x " 5628 "with error status %x\n", vha->vp_idx, 5629 atio->u.raw.entry_type, 5630 atio->u.isp2x.entry_status); 5631 break; 5632 } 5633 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5634 5635 if (!ha_locked) 5636 spin_lock_irqsave(&ha->hardware_lock, flags); 5637 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5638 if (!ha_locked) 5639 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5640 break; 5641 } 5642 5643 default: 5644 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5645 "qla_target(%d): Received unknown ATIO atio " 5646 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5647 break; 5648 } 5649 5650 tgt->atio_irq_cmd_count--; 5651 } 5652 5653 /* 5654 * qpair lock is assume to be held 5655 * rc = 0 : send terminate & abts respond 5656 * rc != 0: do not send term & abts respond 5657 */ 5658 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5659 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5660 { 5661 struct qla_hw_data *ha = vha->hw; 5662 int rc = 0; 5663 5664 /* 5665 * Detect unresolved exchange. If the same ABTS is unable 5666 * to terminate an existing command and the same ABTS loops 5667 * between FW & Driver, then force FW dump. Under 1 jiff, 5668 * we should see multiple loops. 5669 */ 5670 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5671 qpair->retry_term_jiff == jiffies) { 5672 /* found existing exchange */ 5673 qpair->retry_term_cnt++; 5674 if (qpair->retry_term_cnt >= 5) { 5675 rc = -EIO; 5676 qpair->retry_term_cnt = 0; 5677 ql_log(ql_log_warn, vha, 0xffff, 5678 "Unable to send ABTS Respond. Dumping firmware.\n"); 5679 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5680 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5681 5682 if (qpair == ha->base_qpair) 5683 ha->isp_ops->fw_dump(vha); 5684 else 5685 qla2xxx_dump_fw(vha); 5686 5687 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5688 qla2xxx_wake_dpc(vha); 5689 } 5690 } else if (qpair->retry_term_jiff != jiffies) { 5691 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5692 qpair->retry_term_cnt = 0; 5693 qpair->retry_term_jiff = jiffies; 5694 } 5695 5696 return rc; 5697 } 5698 5699 5700 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5701 struct rsp_que *rsp, response_t *pkt) 5702 { 5703 struct abts_resp_from_24xx_fw *entry = 5704 (struct abts_resp_from_24xx_fw *)pkt; 5705 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5706 struct qla_tgt_mgmt_cmd *mcmd; 5707 struct qla_hw_data *ha = vha->hw; 5708 5709 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5710 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5711 ql_dbg(ql_dbg_async, vha, 0xe064, 5712 "qla_target(%d): ABTS Comp without mcmd\n", 5713 vha->vp_idx); 5714 return; 5715 } 5716 5717 if (mcmd) 5718 vha = mcmd->vha; 5719 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5720 5721 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5722 "ABTS_RESP_24XX: compl_status %x\n", 5723 entry->compl_status); 5724 5725 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5726 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5727 le32_to_cpu(entry->error_subcode2) == 0) { 5728 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5729 ha->tgt.tgt_ops->free_mcmd(mcmd); 5730 return; 5731 } 5732 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5733 pkt, mcmd); 5734 } else { 5735 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5736 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5737 vha->vp_idx, entry->compl_status, 5738 entry->error_subcode1, 5739 entry->error_subcode2); 5740 ha->tgt.tgt_ops->free_mcmd(mcmd); 5741 } 5742 } else if (mcmd) { 5743 ha->tgt.tgt_ops->free_mcmd(mcmd); 5744 } 5745 } 5746 5747 /* ha->hardware_lock supposed to be held on entry */ 5748 /* called via callback from qla2xxx */ 5749 static void qlt_response_pkt(struct scsi_qla_host *vha, 5750 struct rsp_que *rsp, response_t *pkt) 5751 { 5752 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5753 5754 if (unlikely(tgt == NULL)) { 5755 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5756 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5757 vha->vp_idx, pkt->entry_type, vha->hw); 5758 return; 5759 } 5760 5761 /* 5762 * In tgt_stop mode we also should allow all requests to pass. 5763 * Otherwise, some commands can stuck. 5764 */ 5765 5766 switch (pkt->entry_type) { 5767 case CTIO_CRC2: 5768 case CTIO_TYPE7: 5769 { 5770 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5771 5772 qlt_do_ctio_completion(vha, rsp, entry->handle, 5773 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5774 entry); 5775 break; 5776 } 5777 5778 case ACCEPT_TGT_IO_TYPE: 5779 { 5780 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5781 int rc; 5782 5783 if (atio->u.isp2x.status != 5784 cpu_to_le16(ATIO_CDB_VALID)) { 5785 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5786 "qla_target(%d): ATIO with error " 5787 "status %x received\n", vha->vp_idx, 5788 le16_to_cpu(atio->u.isp2x.status)); 5789 break; 5790 } 5791 5792 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5793 if (rc != 0) 5794 return; 5795 5796 rc = qlt_handle_cmd_for_atio(vha, atio); 5797 if (unlikely(rc != 0)) { 5798 switch (rc) { 5799 case -ENODEV: 5800 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5801 "qla_target: Unable to send command to target\n"); 5802 break; 5803 case -EBADF: 5804 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5805 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5806 qlt_send_term_exchange(rsp->qpair, NULL, 5807 atio, 1, 0); 5808 break; 5809 case -EBUSY: 5810 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5811 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5812 vha->vp_idx); 5813 qlt_send_busy(rsp->qpair, atio, 5814 tc_sam_status); 5815 break; 5816 default: 5817 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5818 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5819 vha->vp_idx); 5820 qlt_send_busy(rsp->qpair, atio, 5821 qla_sam_status); 5822 break; 5823 } 5824 } 5825 } 5826 break; 5827 5828 case CONTINUE_TGT_IO_TYPE: 5829 { 5830 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5831 5832 qlt_do_ctio_completion(vha, rsp, entry->handle, 5833 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5834 entry); 5835 break; 5836 } 5837 5838 case CTIO_A64_TYPE: 5839 { 5840 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5841 5842 qlt_do_ctio_completion(vha, rsp, entry->handle, 5843 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5844 entry); 5845 break; 5846 } 5847 5848 case IMMED_NOTIFY_TYPE: 5849 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5850 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5851 break; 5852 5853 case NOTIFY_ACK_TYPE: 5854 if (tgt->notify_ack_expected > 0) { 5855 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5856 5857 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5858 "NOTIFY_ACK seq %08x status %x\n", 5859 le16_to_cpu(entry->u.isp2x.seq_id), 5860 le16_to_cpu(entry->u.isp2x.status)); 5861 tgt->notify_ack_expected--; 5862 if (entry->u.isp2x.status != 5863 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5864 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5865 "qla_target(%d): NOTIFY_ACK " 5866 "failed %x\n", vha->vp_idx, 5867 le16_to_cpu(entry->u.isp2x.status)); 5868 } 5869 } else { 5870 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5871 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5872 vha->vp_idx); 5873 } 5874 break; 5875 5876 case ABTS_RECV_24XX: 5877 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5878 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5879 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5880 break; 5881 5882 case ABTS_RESP_24XX: 5883 if (tgt->abts_resp_expected > 0) { 5884 qlt_handle_abts_completion(vha, rsp, pkt); 5885 } else { 5886 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5887 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5888 "received\n", vha->vp_idx); 5889 } 5890 break; 5891 5892 default: 5893 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5894 "qla_target(%d): Received unknown response pkt " 5895 "type %x\n", vha->vp_idx, pkt->entry_type); 5896 break; 5897 } 5898 5899 } 5900 5901 /* 5902 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5903 */ 5904 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5905 uint16_t *mailbox) 5906 { 5907 struct qla_hw_data *ha = vha->hw; 5908 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5909 int login_code; 5910 5911 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5912 return; 5913 5914 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5915 IS_QLA2100(ha)) 5916 return; 5917 /* 5918 * In tgt_stop mode we also should allow all requests to pass. 5919 * Otherwise, some commands can stuck. 5920 */ 5921 5922 5923 switch (code) { 5924 case MBA_RESET: /* Reset */ 5925 case MBA_SYSTEM_ERR: /* System Error */ 5926 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5927 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5929 "qla_target(%d): System error async event %#x " 5930 "occurred", vha->vp_idx, code); 5931 break; 5932 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5933 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5934 break; 5935 5936 case MBA_LOOP_UP: 5937 { 5938 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5939 "qla_target(%d): Async LOOP_UP occurred " 5940 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5941 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5942 if (tgt->link_reinit_iocb_pending) { 5943 qlt_send_notify_ack(ha->base_qpair, 5944 &tgt->link_reinit_iocb, 5945 0, 0, 0, 0, 0, 0); 5946 tgt->link_reinit_iocb_pending = 0; 5947 } 5948 break; 5949 } 5950 5951 case MBA_LIP_OCCURRED: 5952 case MBA_LOOP_DOWN: 5953 case MBA_LIP_RESET: 5954 case MBA_RSCN_UPDATE: 5955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5956 "qla_target(%d): Async event %#x occurred " 5957 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5958 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5959 break; 5960 5961 case MBA_REJECTED_FCP_CMD: 5962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5963 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5964 vha->vp_idx, 5965 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5966 5967 if (mailbox[3] == 1) { 5968 /* exchange starvation. */ 5969 vha->hw->exch_starvation++; 5970 if (vha->hw->exch_starvation > 5) { 5971 ql_log(ql_log_warn, vha, 0xd03a, 5972 "Exchange starvation-. Resetting RISC\n"); 5973 5974 vha->hw->exch_starvation = 0; 5975 if (IS_P3P_TYPE(vha->hw)) 5976 set_bit(FCOE_CTX_RESET_NEEDED, 5977 &vha->dpc_flags); 5978 else 5979 set_bit(ISP_ABORT_NEEDED, 5980 &vha->dpc_flags); 5981 qla2xxx_wake_dpc(vha); 5982 } 5983 } 5984 break; 5985 5986 case MBA_PORT_UPDATE: 5987 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5988 "qla_target(%d): Port update async event %#x " 5989 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5990 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5991 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5992 5993 login_code = mailbox[2]; 5994 if (login_code == 0x4) { 5995 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5996 "Async MB 2: Got PLOGI Complete\n"); 5997 vha->hw->exch_starvation = 0; 5998 } else if (login_code == 0x7) 5999 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6000 "Async MB 2: Port Logged Out\n"); 6001 break; 6002 default: 6003 break; 6004 } 6005 6006 } 6007 6008 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6009 uint16_t loop_id) 6010 { 6011 fc_port_t *fcport, *tfcp, *del; 6012 int rc; 6013 unsigned long flags; 6014 u8 newfcport = 0; 6015 6016 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6017 if (!fcport) { 6018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6019 "qla_target(%d): Allocation of tmp FC port failed", 6020 vha->vp_idx); 6021 return NULL; 6022 } 6023 6024 fcport->loop_id = loop_id; 6025 6026 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6027 if (rc != QLA_SUCCESS) { 6028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6029 "qla_target(%d): Failed to retrieve fcport " 6030 "information -- get_port_database() returned %x " 6031 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6032 kfree(fcport); 6033 return NULL; 6034 } 6035 6036 del = NULL; 6037 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6038 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6039 6040 if (tfcp) { 6041 tfcp->d_id = fcport->d_id; 6042 tfcp->port_type = fcport->port_type; 6043 tfcp->supported_classes = fcport->supported_classes; 6044 tfcp->flags |= fcport->flags; 6045 tfcp->scan_state = QLA_FCPORT_FOUND; 6046 6047 del = fcport; 6048 fcport = tfcp; 6049 } else { 6050 if (vha->hw->current_topology == ISP_CFG_F) 6051 fcport->flags |= FCF_FABRIC_DEVICE; 6052 6053 list_add_tail(&fcport->list, &vha->vp_fcports); 6054 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6055 vha->fcport_count++; 6056 fcport->login_gen++; 6057 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6058 fcport->login_succ = 1; 6059 newfcport = 1; 6060 } 6061 6062 fcport->deleted = 0; 6063 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6064 6065 switch (vha->host->active_mode) { 6066 case MODE_INITIATOR: 6067 case MODE_DUAL: 6068 if (newfcport) { 6069 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6070 qla24xx_sched_upd_fcport(fcport); 6071 } else { 6072 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6073 "%s %d %8phC post gpsc fcp_cnt %d\n", 6074 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6075 qla24xx_post_gpsc_work(vha, fcport); 6076 } 6077 } 6078 break; 6079 6080 case MODE_TARGET: 6081 default: 6082 break; 6083 } 6084 if (del) 6085 qla2x00_free_fcport(del); 6086 6087 return fcport; 6088 } 6089 6090 /* Must be called under tgt_mutex */ 6091 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6092 be_id_t s_id) 6093 { 6094 struct fc_port *sess = NULL; 6095 fc_port_t *fcport = NULL; 6096 int rc, global_resets; 6097 uint16_t loop_id = 0; 6098 6099 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6100 /* 6101 * This is Domain Controller, so it should be 6102 * OK to drop SCSI commands from it. 6103 */ 6104 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6105 "Unable to find initiator with S_ID %x:%x:%x", 6106 s_id.domain, s_id.area, s_id.al_pa); 6107 return NULL; 6108 } 6109 6110 mutex_lock(&vha->vha_tgt.tgt_mutex); 6111 6112 retry: 6113 global_resets = 6114 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6115 6116 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6117 if (rc != 0) { 6118 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6119 6120 ql_log(ql_log_info, vha, 0xf071, 6121 "qla_target(%d): Unable to find " 6122 "initiator with S_ID %x:%x:%x", 6123 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6124 6125 if (rc == -ENOENT) { 6126 qlt_port_logo_t logo; 6127 6128 logo.id = be_to_port_id(s_id); 6129 logo.cmd_count = 1; 6130 qlt_send_first_logo(vha, &logo); 6131 } 6132 6133 return NULL; 6134 } 6135 6136 fcport = qlt_get_port_database(vha, loop_id); 6137 if (!fcport) { 6138 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6139 return NULL; 6140 } 6141 6142 if (global_resets != 6143 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6145 "qla_target(%d): global reset during session discovery " 6146 "(counter was %d, new %d), retrying", vha->vp_idx, 6147 global_resets, 6148 atomic_read(&vha->vha_tgt. 6149 qla_tgt->tgt_global_resets_count)); 6150 goto retry; 6151 } 6152 6153 sess = qlt_create_sess(vha, fcport, true); 6154 6155 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6156 6157 return sess; 6158 } 6159 6160 static void qlt_abort_work(struct qla_tgt *tgt, 6161 struct qla_tgt_sess_work_param *prm) 6162 { 6163 struct scsi_qla_host *vha = tgt->vha; 6164 struct qla_hw_data *ha = vha->hw; 6165 struct fc_port *sess = NULL; 6166 unsigned long flags = 0, flags2 = 0; 6167 be_id_t s_id; 6168 int rc; 6169 6170 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6171 6172 if (tgt->tgt_stop) 6173 goto out_term2; 6174 6175 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6176 6177 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6178 if (!sess) { 6179 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6180 6181 sess = qlt_make_local_sess(vha, s_id); 6182 /* sess has got an extra creation ref */ 6183 6184 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6185 if (!sess) 6186 goto out_term2; 6187 } else { 6188 if (sess->deleted) { 6189 sess = NULL; 6190 goto out_term2; 6191 } 6192 6193 if (!kref_get_unless_zero(&sess->sess_kref)) { 6194 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6195 "%s: kref_get fail %8phC \n", 6196 __func__, sess->port_name); 6197 sess = NULL; 6198 goto out_term2; 6199 } 6200 } 6201 6202 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6203 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6204 6205 ha->tgt.tgt_ops->put_sess(sess); 6206 6207 if (rc != 0) 6208 goto out_term; 6209 return; 6210 6211 out_term2: 6212 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6213 6214 out_term: 6215 spin_lock_irqsave(&ha->hardware_lock, flags); 6216 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6217 FCP_TMF_REJECTED, false); 6218 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6219 } 6220 6221 static void qlt_tmr_work(struct qla_tgt *tgt, 6222 struct qla_tgt_sess_work_param *prm) 6223 { 6224 struct atio_from_isp *a = &prm->tm_iocb2; 6225 struct scsi_qla_host *vha = tgt->vha; 6226 struct qla_hw_data *ha = vha->hw; 6227 struct fc_port *sess; 6228 unsigned long flags; 6229 be_id_t s_id; 6230 int rc; 6231 u64 unpacked_lun; 6232 int fn; 6233 void *iocb; 6234 6235 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6236 6237 if (tgt->tgt_stop) 6238 goto out_term2; 6239 6240 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6241 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6242 if (!sess) { 6243 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6244 6245 sess = qlt_make_local_sess(vha, s_id); 6246 /* sess has got an extra creation ref */ 6247 6248 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6249 if (!sess) 6250 goto out_term2; 6251 } else { 6252 if (sess->deleted) { 6253 goto out_term2; 6254 } 6255 6256 if (!kref_get_unless_zero(&sess->sess_kref)) { 6257 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6258 "%s: kref_get fail %8phC\n", 6259 __func__, sess->port_name); 6260 goto out_term2; 6261 } 6262 } 6263 6264 iocb = a; 6265 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6266 unpacked_lun = 6267 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6268 6269 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6270 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6271 6272 ha->tgt.tgt_ops->put_sess(sess); 6273 6274 if (rc != 0) 6275 goto out_term; 6276 return; 6277 6278 out_term2: 6279 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6280 out_term: 6281 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6282 } 6283 6284 static void qlt_sess_work_fn(struct work_struct *work) 6285 { 6286 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6287 struct scsi_qla_host *vha = tgt->vha; 6288 unsigned long flags; 6289 6290 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6291 6292 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6293 while (!list_empty(&tgt->sess_works_list)) { 6294 struct qla_tgt_sess_work_param *prm = list_entry( 6295 tgt->sess_works_list.next, typeof(*prm), 6296 sess_works_list_entry); 6297 6298 /* 6299 * This work can be scheduled on several CPUs at time, so we 6300 * must delete the entry to eliminate double processing 6301 */ 6302 list_del(&prm->sess_works_list_entry); 6303 6304 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6305 6306 switch (prm->type) { 6307 case QLA_TGT_SESS_WORK_ABORT: 6308 qlt_abort_work(tgt, prm); 6309 break; 6310 case QLA_TGT_SESS_WORK_TM: 6311 qlt_tmr_work(tgt, prm); 6312 break; 6313 default: 6314 BUG_ON(1); 6315 break; 6316 } 6317 6318 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6319 6320 kfree(prm); 6321 } 6322 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6323 } 6324 6325 /* Must be called under tgt_host_action_mutex */ 6326 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6327 { 6328 struct qla_tgt *tgt; 6329 int rc, i; 6330 struct qla_qpair_hint *h; 6331 6332 if (!QLA_TGT_MODE_ENABLED()) 6333 return 0; 6334 6335 if (!IS_TGT_MODE_CAPABLE(ha)) { 6336 ql_log(ql_log_warn, base_vha, 0xe070, 6337 "This adapter does not support target mode.\n"); 6338 return 0; 6339 } 6340 6341 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6342 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6343 6344 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6345 6346 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6347 if (!tgt) { 6348 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6349 "Unable to allocate struct qla_tgt\n"); 6350 return -ENOMEM; 6351 } 6352 6353 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6354 sizeof(struct qla_qpair_hint), 6355 GFP_KERNEL); 6356 if (!tgt->qphints) { 6357 kfree(tgt); 6358 ql_log(ql_log_warn, base_vha, 0x0197, 6359 "Unable to allocate qpair hints.\n"); 6360 return -ENOMEM; 6361 } 6362 6363 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6364 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6365 6366 rc = btree_init64(&tgt->lun_qpair_map); 6367 if (rc) { 6368 kfree(tgt->qphints); 6369 kfree(tgt); 6370 ql_log(ql_log_info, base_vha, 0x0198, 6371 "Unable to initialize lun_qpair_map btree\n"); 6372 return -EIO; 6373 } 6374 h = &tgt->qphints[0]; 6375 h->qpair = ha->base_qpair; 6376 INIT_LIST_HEAD(&h->hint_elem); 6377 h->cpuid = ha->base_qpair->cpuid; 6378 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6379 6380 for (i = 0; i < ha->max_qpairs; i++) { 6381 unsigned long flags; 6382 6383 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6384 6385 h = &tgt->qphints[i + 1]; 6386 INIT_LIST_HEAD(&h->hint_elem); 6387 if (qpair) { 6388 h->qpair = qpair; 6389 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6390 list_add_tail(&h->hint_elem, &qpair->hints_list); 6391 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6392 h->cpuid = qpair->cpuid; 6393 } 6394 } 6395 6396 tgt->ha = ha; 6397 tgt->vha = base_vha; 6398 init_waitqueue_head(&tgt->waitQ); 6399 INIT_LIST_HEAD(&tgt->del_sess_list); 6400 spin_lock_init(&tgt->sess_work_lock); 6401 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6402 INIT_LIST_HEAD(&tgt->sess_works_list); 6403 atomic_set(&tgt->tgt_global_resets_count, 0); 6404 6405 base_vha->vha_tgt.qla_tgt = tgt; 6406 6407 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6408 "qla_target(%d): using 64 Bit PCI addressing", 6409 base_vha->vp_idx); 6410 /* 3 is reserved */ 6411 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6412 6413 mutex_lock(&qla_tgt_mutex); 6414 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6415 mutex_unlock(&qla_tgt_mutex); 6416 6417 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6418 ha->tgt.tgt_ops->add_target(base_vha); 6419 6420 return 0; 6421 } 6422 6423 /* Must be called under tgt_host_action_mutex */ 6424 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6425 { 6426 if (!vha->vha_tgt.qla_tgt) 6427 return 0; 6428 6429 if (vha->fc_vport) { 6430 qlt_release(vha->vha_tgt.qla_tgt); 6431 return 0; 6432 } 6433 6434 /* free left over qfull cmds */ 6435 qlt_init_term_exchange(vha); 6436 6437 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6438 vha->host_no, ha); 6439 qlt_release(vha->vha_tgt.qla_tgt); 6440 6441 return 0; 6442 } 6443 6444 void qlt_remove_target_resources(struct qla_hw_data *ha) 6445 { 6446 struct scsi_qla_host *node; 6447 u32 key = 0; 6448 6449 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6450 btree_remove32(&ha->tgt.host_map, key); 6451 6452 btree_destroy32(&ha->tgt.host_map); 6453 } 6454 6455 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6456 unsigned char *b) 6457 { 6458 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6459 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6460 put_unaligned_be64(wwpn, b); 6461 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6462 } 6463 6464 /** 6465 * qla_tgt_lport_register - register lport with external module 6466 * 6467 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6468 * @phys_wwpn: physical port WWPN 6469 * @npiv_wwpn: NPIV WWPN 6470 * @npiv_wwnn: NPIV WWNN 6471 * @callback: lport initialization callback for tcm_qla2xxx code 6472 */ 6473 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6474 u64 npiv_wwpn, u64 npiv_wwnn, 6475 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6476 { 6477 struct qla_tgt *tgt; 6478 struct scsi_qla_host *vha; 6479 struct qla_hw_data *ha; 6480 struct Scsi_Host *host; 6481 unsigned long flags; 6482 int rc; 6483 u8 b[WWN_SIZE]; 6484 6485 mutex_lock(&qla_tgt_mutex); 6486 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6487 vha = tgt->vha; 6488 ha = vha->hw; 6489 6490 host = vha->host; 6491 if (!host) 6492 continue; 6493 6494 if (!(host->hostt->supported_mode & MODE_TARGET)) 6495 continue; 6496 6497 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6498 continue; 6499 6500 spin_lock_irqsave(&ha->hardware_lock, flags); 6501 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6502 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6503 host->host_no); 6504 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6505 continue; 6506 } 6507 if (tgt->tgt_stop) { 6508 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6509 host->host_no); 6510 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6511 continue; 6512 } 6513 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6514 6515 if (!scsi_host_get(host)) { 6516 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6517 "Unable to scsi_host_get() for" 6518 " qla2xxx scsi_host\n"); 6519 continue; 6520 } 6521 qlt_lport_dump(vha, phys_wwpn, b); 6522 6523 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6524 scsi_host_put(host); 6525 continue; 6526 } 6527 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6528 if (rc != 0) 6529 scsi_host_put(host); 6530 6531 mutex_unlock(&qla_tgt_mutex); 6532 return rc; 6533 } 6534 mutex_unlock(&qla_tgt_mutex); 6535 6536 return -ENODEV; 6537 } 6538 EXPORT_SYMBOL(qlt_lport_register); 6539 6540 /** 6541 * qla_tgt_lport_deregister - Degister lport 6542 * 6543 * @vha: Registered scsi_qla_host pointer 6544 */ 6545 void qlt_lport_deregister(struct scsi_qla_host *vha) 6546 { 6547 struct qla_hw_data *ha = vha->hw; 6548 struct Scsi_Host *sh = vha->host; 6549 /* 6550 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6551 */ 6552 vha->vha_tgt.target_lport_ptr = NULL; 6553 ha->tgt.tgt_ops = NULL; 6554 /* 6555 * Release the Scsi_Host reference for the underlying qla2xxx host 6556 */ 6557 scsi_host_put(sh); 6558 } 6559 EXPORT_SYMBOL(qlt_lport_deregister); 6560 6561 /* Must be called under HW lock */ 6562 void qlt_set_mode(struct scsi_qla_host *vha) 6563 { 6564 switch (vha->qlini_mode) { 6565 case QLA2XXX_INI_MODE_DISABLED: 6566 case QLA2XXX_INI_MODE_EXCLUSIVE: 6567 vha->host->active_mode = MODE_TARGET; 6568 break; 6569 case QLA2XXX_INI_MODE_ENABLED: 6570 vha->host->active_mode = MODE_INITIATOR; 6571 break; 6572 case QLA2XXX_INI_MODE_DUAL: 6573 vha->host->active_mode = MODE_DUAL; 6574 break; 6575 default: 6576 break; 6577 } 6578 } 6579 6580 /* Must be called under HW lock */ 6581 static void qlt_clear_mode(struct scsi_qla_host *vha) 6582 { 6583 switch (vha->qlini_mode) { 6584 case QLA2XXX_INI_MODE_DISABLED: 6585 vha->host->active_mode = MODE_UNKNOWN; 6586 break; 6587 case QLA2XXX_INI_MODE_EXCLUSIVE: 6588 vha->host->active_mode = MODE_INITIATOR; 6589 break; 6590 case QLA2XXX_INI_MODE_ENABLED: 6591 case QLA2XXX_INI_MODE_DUAL: 6592 vha->host->active_mode = MODE_INITIATOR; 6593 break; 6594 default: 6595 break; 6596 } 6597 } 6598 6599 /* 6600 * qla_tgt_enable_vha - NO LOCK HELD 6601 * 6602 * host_reset, bring up w/ Target Mode Enabled 6603 */ 6604 void 6605 qlt_enable_vha(struct scsi_qla_host *vha) 6606 { 6607 struct qla_hw_data *ha = vha->hw; 6608 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6609 unsigned long flags; 6610 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6611 6612 if (!tgt) { 6613 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6614 "Unable to locate qla_tgt pointer from" 6615 " struct qla_hw_data\n"); 6616 dump_stack(); 6617 return; 6618 } 6619 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6620 return; 6621 6622 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6623 ha->tgt.num_act_qpairs = ha->max_qpairs; 6624 spin_lock_irqsave(&ha->hardware_lock, flags); 6625 tgt->tgt_stopped = 0; 6626 qlt_set_mode(vha); 6627 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6628 6629 mutex_lock(&ha->optrom_mutex); 6630 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6631 "%s.\n", __func__); 6632 if (vha->vp_idx) { 6633 qla24xx_disable_vp(vha); 6634 qla24xx_enable_vp(vha); 6635 } else { 6636 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6637 qla2xxx_wake_dpc(base_vha); 6638 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6639 QLA_SUCCESS); 6640 } 6641 mutex_unlock(&ha->optrom_mutex); 6642 } 6643 EXPORT_SYMBOL(qlt_enable_vha); 6644 6645 /* 6646 * qla_tgt_disable_vha - NO LOCK HELD 6647 * 6648 * Disable Target Mode and reset the adapter 6649 */ 6650 static void qlt_disable_vha(struct scsi_qla_host *vha) 6651 { 6652 struct qla_hw_data *ha = vha->hw; 6653 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6654 unsigned long flags; 6655 6656 if (!tgt) { 6657 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6658 "Unable to locate qla_tgt pointer from" 6659 " struct qla_hw_data\n"); 6660 dump_stack(); 6661 return; 6662 } 6663 6664 spin_lock_irqsave(&ha->hardware_lock, flags); 6665 qlt_clear_mode(vha); 6666 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6667 6668 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6669 qla2xxx_wake_dpc(vha); 6670 6671 /* 6672 * We are expecting the offline state. 6673 * QLA_FUNCTION_FAILED means that adapter is offline. 6674 */ 6675 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6676 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6677 "adapter is offline\n"); 6678 } 6679 6680 /* 6681 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6682 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6683 * members. 6684 */ 6685 void 6686 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6687 { 6688 vha->vha_tgt.qla_tgt = NULL; 6689 6690 mutex_init(&vha->vha_tgt.tgt_mutex); 6691 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6692 6693 qlt_clear_mode(vha); 6694 6695 /* 6696 * NOTE: Currently the value is kept the same for <24xx and 6697 * >=24xx ISPs. If it is necessary to change it, 6698 * the check should be added for specific ISPs, 6699 * assigning the value appropriately. 6700 */ 6701 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6702 6703 qlt_add_target(ha, vha); 6704 } 6705 6706 u8 6707 qlt_rff_id(struct scsi_qla_host *vha) 6708 { 6709 u8 fc4_feature = 0; 6710 /* 6711 * FC-4 Feature bit 0 indicates target functionality to the name server. 6712 */ 6713 if (qla_tgt_mode_enabled(vha)) { 6714 fc4_feature = BIT_0; 6715 } else if (qla_ini_mode_enabled(vha)) { 6716 fc4_feature = BIT_1; 6717 } else if (qla_dual_mode_enabled(vha)) 6718 fc4_feature = BIT_0 | BIT_1; 6719 6720 return fc4_feature; 6721 } 6722 6723 /* 6724 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6725 * @ha: HA context 6726 * 6727 * Beginning of ATIO ring has initialization control block already built 6728 * by nvram config routine. 6729 * 6730 * Returns 0 on success. 6731 */ 6732 void 6733 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6734 { 6735 struct qla_hw_data *ha = vha->hw; 6736 uint16_t cnt; 6737 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6738 6739 if (qla_ini_mode_enabled(vha)) 6740 return; 6741 6742 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6743 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6744 pkt++; 6745 } 6746 6747 } 6748 6749 /* 6750 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6751 * @ha: SCSI driver HA context 6752 */ 6753 void 6754 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6755 { 6756 struct qla_hw_data *ha = vha->hw; 6757 struct atio_from_isp *pkt; 6758 int cnt, i; 6759 6760 if (!ha->flags.fw_started) 6761 return; 6762 6763 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6764 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6765 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6766 cnt = pkt->u.raw.entry_count; 6767 6768 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6769 /* 6770 * This packet is corrupted. The header + payload 6771 * can not be trusted. There is no point in passing 6772 * it further up. 6773 */ 6774 ql_log(ql_log_warn, vha, 0xd03c, 6775 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6776 &pkt->u.isp24.fcp_hdr.s_id, 6777 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6778 pkt->u.isp24.exchange_addr, pkt); 6779 6780 adjust_corrupted_atio(pkt); 6781 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6782 ha_locked, 0); 6783 } else { 6784 qlt_24xx_atio_pkt_all_vps(vha, 6785 (struct atio_from_isp *)pkt, ha_locked); 6786 } 6787 6788 for (i = 0; i < cnt; i++) { 6789 ha->tgt.atio_ring_index++; 6790 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6791 ha->tgt.atio_ring_index = 0; 6792 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6793 } else 6794 ha->tgt.atio_ring_ptr++; 6795 6796 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6797 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6798 } 6799 wmb(); 6800 } 6801 6802 /* Adjust ring index */ 6803 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6804 } 6805 6806 void 6807 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6808 { 6809 struct qla_hw_data *ha = vha->hw; 6810 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6811 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6812 6813 if (!QLA_TGT_MODE_ENABLED()) 6814 return; 6815 6816 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6817 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6818 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6819 6820 if (ha->flags.msix_enabled) { 6821 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6822 if (IS_QLA2071(ha)) { 6823 /* 4 ports Baker: Enable Interrupt Handshake */ 6824 icb->msix_atio = 0; 6825 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6826 } else { 6827 icb->msix_atio = cpu_to_le16(msix->entry); 6828 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6829 } 6830 ql_dbg(ql_dbg_init, vha, 0xf072, 6831 "Registering ICB vector 0x%x for atio que.\n", 6832 msix->entry); 6833 } 6834 } else { 6835 /* INTx|MSI */ 6836 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6837 icb->msix_atio = 0; 6838 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6839 ql_dbg(ql_dbg_init, vha, 0xf072, 6840 "%s: Use INTx for ATIOQ.\n", __func__); 6841 } 6842 } 6843 } 6844 6845 void 6846 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6847 { 6848 struct qla_hw_data *ha = vha->hw; 6849 u32 tmp; 6850 6851 if (!QLA_TGT_MODE_ENABLED()) 6852 return; 6853 6854 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6855 if (!ha->tgt.saved_set) { 6856 /* We save only once */ 6857 ha->tgt.saved_exchange_count = nv->exchange_count; 6858 ha->tgt.saved_firmware_options_1 = 6859 nv->firmware_options_1; 6860 ha->tgt.saved_firmware_options_2 = 6861 nv->firmware_options_2; 6862 ha->tgt.saved_firmware_options_3 = 6863 nv->firmware_options_3; 6864 ha->tgt.saved_set = 1; 6865 } 6866 6867 if (qla_tgt_mode_enabled(vha)) 6868 nv->exchange_count = cpu_to_le16(0xFFFF); 6869 else /* dual */ 6870 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6871 6872 /* Enable target mode */ 6873 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6874 6875 /* Disable ini mode, if requested */ 6876 if (qla_tgt_mode_enabled(vha)) 6877 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6878 6879 /* Disable Full Login after LIP */ 6880 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6881 /* Enable initial LIP */ 6882 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6883 if (ql2xtgt_tape_enable) 6884 /* Enable FC Tape support */ 6885 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6886 else 6887 /* Disable FC Tape support */ 6888 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6889 6890 /* Disable Full Login after LIP */ 6891 nv->host_p &= cpu_to_le32(~BIT_10); 6892 6893 /* 6894 * clear BIT 15 explicitly as we have seen at least 6895 * a couple of instances where this was set and this 6896 * was causing the firmware to not be initialized. 6897 */ 6898 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6899 /* Enable target PRLI control */ 6900 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6901 6902 if (IS_QLA25XX(ha)) { 6903 /* Change Loop-prefer to Pt-Pt */ 6904 tmp = ~(BIT_4|BIT_5|BIT_6); 6905 nv->firmware_options_2 &= cpu_to_le32(tmp); 6906 tmp = P2P << 4; 6907 nv->firmware_options_2 |= cpu_to_le32(tmp); 6908 } 6909 } else { 6910 if (ha->tgt.saved_set) { 6911 nv->exchange_count = ha->tgt.saved_exchange_count; 6912 nv->firmware_options_1 = 6913 ha->tgt.saved_firmware_options_1; 6914 nv->firmware_options_2 = 6915 ha->tgt.saved_firmware_options_2; 6916 nv->firmware_options_3 = 6917 ha->tgt.saved_firmware_options_3; 6918 } 6919 return; 6920 } 6921 6922 if (ha->base_qpair->enable_class_2) { 6923 if (vha->flags.init_done) 6924 fc_host_supported_classes(vha->host) = 6925 FC_COS_CLASS2 | FC_COS_CLASS3; 6926 6927 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6928 } else { 6929 if (vha->flags.init_done) 6930 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6931 6932 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6933 } 6934 } 6935 6936 void 6937 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6938 struct init_cb_24xx *icb) 6939 { 6940 struct qla_hw_data *ha = vha->hw; 6941 6942 if (!QLA_TGT_MODE_ENABLED()) 6943 return; 6944 6945 if (ha->tgt.node_name_set) { 6946 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6947 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6948 } 6949 } 6950 6951 void 6952 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6953 { 6954 struct qla_hw_data *ha = vha->hw; 6955 u32 tmp; 6956 6957 if (!QLA_TGT_MODE_ENABLED()) 6958 return; 6959 6960 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6961 if (!ha->tgt.saved_set) { 6962 /* We save only once */ 6963 ha->tgt.saved_exchange_count = nv->exchange_count; 6964 ha->tgt.saved_firmware_options_1 = 6965 nv->firmware_options_1; 6966 ha->tgt.saved_firmware_options_2 = 6967 nv->firmware_options_2; 6968 ha->tgt.saved_firmware_options_3 = 6969 nv->firmware_options_3; 6970 ha->tgt.saved_set = 1; 6971 } 6972 6973 if (qla_tgt_mode_enabled(vha)) 6974 nv->exchange_count = cpu_to_le16(0xFFFF); 6975 else /* dual */ 6976 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6977 6978 /* Enable target mode */ 6979 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6980 6981 /* Disable ini mode, if requested */ 6982 if (qla_tgt_mode_enabled(vha)) 6983 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6984 /* Disable Full Login after LIP */ 6985 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6986 /* Enable initial LIP */ 6987 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6988 /* 6989 * clear BIT 15 explicitly as we have seen at 6990 * least a couple of instances where this was set 6991 * and this was causing the firmware to not be 6992 * initialized. 6993 */ 6994 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6995 if (ql2xtgt_tape_enable) 6996 /* Enable FC tape support */ 6997 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6998 else 6999 /* Disable FC tape support */ 7000 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7001 7002 /* Disable Full Login after LIP */ 7003 nv->host_p &= cpu_to_le32(~BIT_10); 7004 /* Enable target PRLI control */ 7005 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7006 7007 /* Change Loop-prefer to Pt-Pt */ 7008 tmp = ~(BIT_4|BIT_5|BIT_6); 7009 nv->firmware_options_2 &= cpu_to_le32(tmp); 7010 tmp = P2P << 4; 7011 nv->firmware_options_2 |= cpu_to_le32(tmp); 7012 } else { 7013 if (ha->tgt.saved_set) { 7014 nv->exchange_count = ha->tgt.saved_exchange_count; 7015 nv->firmware_options_1 = 7016 ha->tgt.saved_firmware_options_1; 7017 nv->firmware_options_2 = 7018 ha->tgt.saved_firmware_options_2; 7019 nv->firmware_options_3 = 7020 ha->tgt.saved_firmware_options_3; 7021 } 7022 return; 7023 } 7024 7025 if (ha->base_qpair->enable_class_2) { 7026 if (vha->flags.init_done) 7027 fc_host_supported_classes(vha->host) = 7028 FC_COS_CLASS2 | FC_COS_CLASS3; 7029 7030 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7031 } else { 7032 if (vha->flags.init_done) 7033 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7034 7035 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7036 } 7037 } 7038 7039 void 7040 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7041 struct init_cb_81xx *icb) 7042 { 7043 struct qla_hw_data *ha = vha->hw; 7044 7045 if (!QLA_TGT_MODE_ENABLED()) 7046 return; 7047 7048 if (ha->tgt.node_name_set) { 7049 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7050 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7051 } 7052 } 7053 7054 void 7055 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7056 { 7057 if (!QLA_TGT_MODE_ENABLED()) 7058 return; 7059 7060 ha->msix_count += 1; /* For ATIO Q */ 7061 } 7062 7063 7064 void 7065 qlt_modify_vp_config(struct scsi_qla_host *vha, 7066 struct vp_config_entry_24xx *vpmod) 7067 { 7068 /* enable target mode. Bit5 = 1 => disable */ 7069 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7070 vpmod->options_idx1 &= ~BIT_5; 7071 7072 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7073 if (qla_tgt_mode_enabled(vha)) 7074 vpmod->options_idx1 &= ~BIT_4; 7075 } 7076 7077 void 7078 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7079 { 7080 int rc; 7081 7082 if (!QLA_TGT_MODE_ENABLED()) 7083 return; 7084 7085 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7086 IS_QLA28XX(ha)) { 7087 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7088 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7089 } else { 7090 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7091 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7092 } 7093 7094 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7095 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7096 7097 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7098 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7099 qlt_unknown_atio_work_fn); 7100 7101 qlt_clear_mode(base_vha); 7102 7103 rc = btree_init32(&ha->tgt.host_map); 7104 if (rc) 7105 ql_log(ql_log_info, base_vha, 0xd03d, 7106 "Unable to initialize ha->host_map btree\n"); 7107 7108 qlt_update_vp_map(base_vha, SET_VP_IDX); 7109 } 7110 7111 irqreturn_t 7112 qla83xx_msix_atio_q(int irq, void *dev_id) 7113 { 7114 struct rsp_que *rsp; 7115 scsi_qla_host_t *vha; 7116 struct qla_hw_data *ha; 7117 unsigned long flags; 7118 7119 rsp = (struct rsp_que *) dev_id; 7120 ha = rsp->hw; 7121 vha = pci_get_drvdata(ha->pdev); 7122 7123 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7124 7125 qlt_24xx_process_atio_queue(vha, 0); 7126 7127 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7128 7129 return IRQ_HANDLED; 7130 } 7131 7132 static void 7133 qlt_handle_abts_recv_work(struct work_struct *work) 7134 { 7135 struct qla_tgt_sess_op *op = container_of(work, 7136 struct qla_tgt_sess_op, work); 7137 scsi_qla_host_t *vha = op->vha; 7138 struct qla_hw_data *ha = vha->hw; 7139 unsigned long flags; 7140 7141 if (qla2x00_reset_active(vha) || 7142 (op->chip_reset != ha->base_qpair->chip_reset)) 7143 return; 7144 7145 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7146 qlt_24xx_process_atio_queue(vha, 0); 7147 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7148 7149 spin_lock_irqsave(&ha->hardware_lock, flags); 7150 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7151 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7152 7153 kfree(op); 7154 } 7155 7156 void 7157 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7158 response_t *pkt) 7159 { 7160 struct qla_tgt_sess_op *op; 7161 7162 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7163 7164 if (!op) { 7165 /* do not reach for ATIO queue here. This is best effort err 7166 * recovery at this point. 7167 */ 7168 qlt_response_pkt_all_vps(vha, rsp, pkt); 7169 return; 7170 } 7171 7172 memcpy(&op->atio, pkt, sizeof(*pkt)); 7173 op->vha = vha; 7174 op->chip_reset = vha->hw->base_qpair->chip_reset; 7175 op->rsp = rsp; 7176 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7177 queue_work(qla_tgt_wq, &op->work); 7178 return; 7179 } 7180 7181 int 7182 qlt_mem_alloc(struct qla_hw_data *ha) 7183 { 7184 if (!QLA_TGT_MODE_ENABLED()) 7185 return 0; 7186 7187 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7188 sizeof(struct qla_tgt_vp_map), 7189 GFP_KERNEL); 7190 if (!ha->tgt.tgt_vp_map) 7191 return -ENOMEM; 7192 7193 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7194 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7195 &ha->tgt.atio_dma, GFP_KERNEL); 7196 if (!ha->tgt.atio_ring) { 7197 kfree(ha->tgt.tgt_vp_map); 7198 return -ENOMEM; 7199 } 7200 return 0; 7201 } 7202 7203 void 7204 qlt_mem_free(struct qla_hw_data *ha) 7205 { 7206 if (!QLA_TGT_MODE_ENABLED()) 7207 return; 7208 7209 if (ha->tgt.atio_ring) { 7210 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7211 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7212 ha->tgt.atio_dma); 7213 } 7214 ha->tgt.atio_ring = NULL; 7215 ha->tgt.atio_dma = 0; 7216 kfree(ha->tgt.tgt_vp_map); 7217 ha->tgt.tgt_vp_map = NULL; 7218 } 7219 7220 /* vport_slock to be held by the caller */ 7221 void 7222 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7223 { 7224 void *slot; 7225 u32 key; 7226 int rc; 7227 7228 if (!QLA_TGT_MODE_ENABLED()) 7229 return; 7230 7231 key = vha->d_id.b24; 7232 7233 switch (cmd) { 7234 case SET_VP_IDX: 7235 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7236 break; 7237 case SET_AL_PA: 7238 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7239 if (!slot) { 7240 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7241 "Save vha in host_map %p %06x\n", vha, key); 7242 rc = btree_insert32(&vha->hw->tgt.host_map, 7243 key, vha, GFP_ATOMIC); 7244 if (rc) 7245 ql_log(ql_log_info, vha, 0xd03e, 7246 "Unable to insert s_id into host_map: %06x\n", 7247 key); 7248 return; 7249 } 7250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7251 "replace existing vha in host_map %p %06x\n", vha, key); 7252 btree_update32(&vha->hw->tgt.host_map, key, vha); 7253 break; 7254 case RESET_VP_IDX: 7255 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7256 break; 7257 case RESET_AL_PA: 7258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7259 "clear vha in host_map %p %06x\n", vha, key); 7260 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7261 if (slot) 7262 btree_remove32(&vha->hw->tgt.host_map, key); 7263 vha->d_id.b24 = 0; 7264 break; 7265 } 7266 } 7267 7268 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7269 { 7270 7271 if (!vha->d_id.b24) { 7272 vha->d_id = id; 7273 qlt_update_vp_map(vha, SET_AL_PA); 7274 } else if (vha->d_id.b24 != id.b24) { 7275 qlt_update_vp_map(vha, RESET_AL_PA); 7276 vha->d_id = id; 7277 qlt_update_vp_map(vha, SET_AL_PA); 7278 } 7279 } 7280 7281 static int __init qlt_parse_ini_mode(void) 7282 { 7283 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7284 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7285 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7286 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7287 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7288 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7289 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7290 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7291 else 7292 return false; 7293 7294 return true; 7295 } 7296 7297 int __init qlt_init(void) 7298 { 7299 int ret; 7300 7301 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7302 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7303 7304 if (!qlt_parse_ini_mode()) { 7305 ql_log(ql_log_fatal, NULL, 0xe06b, 7306 "qlt_parse_ini_mode() failed\n"); 7307 return -EINVAL; 7308 } 7309 7310 if (!QLA_TGT_MODE_ENABLED()) 7311 return 0; 7312 7313 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7314 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7315 qla_tgt_mgmt_cmd), 0, NULL); 7316 if (!qla_tgt_mgmt_cmd_cachep) { 7317 ql_log(ql_log_fatal, NULL, 0xd04b, 7318 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7319 return -ENOMEM; 7320 } 7321 7322 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7323 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7324 0, NULL); 7325 7326 if (!qla_tgt_plogi_cachep) { 7327 ql_log(ql_log_fatal, NULL, 0xe06d, 7328 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7329 ret = -ENOMEM; 7330 goto out_mgmt_cmd_cachep; 7331 } 7332 7333 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7334 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7335 if (!qla_tgt_mgmt_cmd_mempool) { 7336 ql_log(ql_log_fatal, NULL, 0xe06e, 7337 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7338 ret = -ENOMEM; 7339 goto out_plogi_cachep; 7340 } 7341 7342 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7343 if (!qla_tgt_wq) { 7344 ql_log(ql_log_fatal, NULL, 0xe06f, 7345 "alloc_workqueue for qla_tgt_wq failed\n"); 7346 ret = -ENOMEM; 7347 goto out_cmd_mempool; 7348 } 7349 /* 7350 * Return 1 to signal that initiator-mode is being disabled 7351 */ 7352 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7353 7354 out_cmd_mempool: 7355 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7356 out_plogi_cachep: 7357 kmem_cache_destroy(qla_tgt_plogi_cachep); 7358 out_mgmt_cmd_cachep: 7359 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7360 return ret; 7361 } 7362 7363 void qlt_exit(void) 7364 { 7365 if (!QLA_TGT_MODE_ENABLED()) 7366 return; 7367 7368 destroy_workqueue(qla_tgt_wq); 7369 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7370 kmem_cache_destroy(qla_tgt_plogi_cachep); 7371 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7372 } 7373