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 /* 1033 * Driver timeout is set to 22 Sec, update count value to loop 1034 * long enough for log-out to complete before advancing. Otherwise, 1035 * straddling logout can interfere with re-login attempt. 1036 */ 1037 if (cnt > 230) 1038 break; 1039 } 1040 1041 ql_dbg(ql_dbg_disc, vha, 0xf087, 1042 "%s: sess %p logout completed\n", __func__, sess); 1043 } 1044 1045 if (sess->logo_ack_needed) { 1046 sess->logo_ack_needed = 0; 1047 qla24xx_async_notify_ack(vha, sess, 1048 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1049 } 1050 1051 spin_lock_irqsave(&vha->work_lock, flags); 1052 sess->flags &= ~FCF_ASYNC_SENT; 1053 spin_unlock_irqrestore(&vha->work_lock, flags); 1054 1055 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1056 if (sess->se_sess) { 1057 sess->se_sess = NULL; 1058 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1059 tgt->sess_count--; 1060 } 1061 1062 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1063 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1064 sess->deleted = QLA_SESS_DELETED; 1065 1066 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1067 vha->fcport_count--; 1068 sess->login_succ = 0; 1069 } 1070 1071 qla2x00_clear_loop_id(sess); 1072 1073 if (sess->conflict) { 1074 sess->conflict->login_pause = 0; 1075 sess->conflict = NULL; 1076 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1077 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1078 } 1079 1080 { 1081 struct qlt_plogi_ack_t *con = 1082 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1083 struct imm_ntfy_from_isp *iocb; 1084 1085 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1086 1087 if (con) { 1088 iocb = &con->iocb; 1089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1090 "se_sess %p / sess %p port %8phC is gone," 1091 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1092 sess->se_sess, sess, sess->port_name, 1093 own ? "releasing own PLOGI" : "no own PLOGI pending", 1094 own ? own->ref_count : -1, 1095 iocb->u.isp24.port_name, con->ref_count); 1096 qlt_plogi_ack_unref(vha, con); 1097 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1098 } else { 1099 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1100 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1101 sess->se_sess, sess, sess->port_name, 1102 own ? "releasing own PLOGI" : 1103 "no own PLOGI pending", 1104 own ? own->ref_count : -1); 1105 } 1106 1107 if (own) { 1108 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1109 qlt_plogi_ack_unref(vha, own); 1110 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1111 } 1112 } 1113 1114 sess->explicit_logout = 0; 1115 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1116 sess->free_pending = 0; 1117 1118 qla2x00_dfs_remove_rport(vha, sess); 1119 1120 ql_dbg(ql_dbg_disc, vha, 0xf001, 1121 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1122 sess, sess->port_name, vha->fcport_count); 1123 1124 if (tgt && (tgt->sess_count == 0)) 1125 wake_up_all(&tgt->waitQ); 1126 1127 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1128 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1129 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1130 switch (vha->host->active_mode) { 1131 case MODE_INITIATOR: 1132 case MODE_DUAL: 1133 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1134 qla2xxx_wake_dpc(vha); 1135 break; 1136 case MODE_TARGET: 1137 default: 1138 /* no-op */ 1139 break; 1140 } 1141 } 1142 1143 if (vha->fcport_count == 0) 1144 wake_up_all(&vha->fcport_waitQ); 1145 } 1146 1147 /* ha->tgt.sess_lock supposed to be held on entry */ 1148 void qlt_unreg_sess(struct fc_port *sess) 1149 { 1150 struct scsi_qla_host *vha = sess->vha; 1151 unsigned long flags; 1152 1153 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1154 "%s sess %p for deletion %8phC\n", 1155 __func__, sess, sess->port_name); 1156 1157 spin_lock_irqsave(&sess->vha->work_lock, flags); 1158 if (sess->free_pending) { 1159 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1160 return; 1161 } 1162 sess->free_pending = 1; 1163 /* 1164 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1165 * management from being sent. 1166 */ 1167 sess->flags |= FCF_ASYNC_SENT; 1168 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1169 1170 if (sess->se_sess) 1171 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1172 1173 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1174 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1175 sess->last_rscn_gen = sess->rscn_gen; 1176 sess->last_login_gen = sess->login_gen; 1177 1178 queue_work(sess->vha->hw->wq, &sess->free_work); 1179 } 1180 EXPORT_SYMBOL(qlt_unreg_sess); 1181 1182 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1183 { 1184 struct qla_hw_data *ha = vha->hw; 1185 struct fc_port *sess = NULL; 1186 uint16_t loop_id; 1187 int res = 0; 1188 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1189 unsigned long flags; 1190 1191 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1192 if (loop_id == 0xFFFF) { 1193 /* Global event */ 1194 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1196 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1198 } else { 1199 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1200 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1201 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1202 } 1203 1204 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1205 "Using sess for qla_tgt_reset: %p\n", sess); 1206 if (!sess) { 1207 res = -ESRCH; 1208 return res; 1209 } 1210 1211 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1212 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1213 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1214 mcmd, loop_id); 1215 1216 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1217 } 1218 1219 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1220 { 1221 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1222 sess->logout_on_delete = 0; 1223 sess->logo_ack_needed = 0; 1224 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1225 } 1226 } 1227 1228 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1229 { 1230 struct qla_tgt *tgt = sess->tgt; 1231 unsigned long flags; 1232 u16 sec; 1233 1234 switch (sess->disc_state) { 1235 case DSC_DELETE_PEND: 1236 return; 1237 case DSC_DELETED: 1238 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1239 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1240 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1241 wake_up_all(&tgt->waitQ); 1242 1243 if (sess->vha->fcport_count == 0) 1244 wake_up_all(&sess->vha->fcport_waitQ); 1245 return; 1246 } 1247 break; 1248 case DSC_UPD_FCPORT: 1249 /* 1250 * This port is not done reporting to upper layer. 1251 * let it finish 1252 */ 1253 sess->next_disc_state = DSC_DELETE_PEND; 1254 sec = jiffies_to_msecs(jiffies - 1255 sess->jiffies_at_registration)/1000; 1256 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1257 sess->sec_since_registration = sec; 1258 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1259 "%s %8phC : Slow Rport registration(%d Sec)\n", 1260 __func__, sess->port_name, sec); 1261 } 1262 return; 1263 default: 1264 break; 1265 } 1266 1267 spin_lock_irqsave(&sess->vha->work_lock, flags); 1268 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1270 return; 1271 } 1272 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1273 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1274 1275 sess->prli_pend_timer = 0; 1276 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1277 1278 qla24xx_chk_fcp_state(sess); 1279 1280 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1281 "Scheduling sess %p for deletion %8phC\n", 1282 sess, sess->port_name); 1283 1284 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1285 } 1286 1287 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1288 { 1289 struct fc_port *sess; 1290 scsi_qla_host_t *vha = tgt->vha; 1291 1292 list_for_each_entry(sess, &vha->vp_fcports, list) { 1293 if (sess->se_sess) 1294 qlt_schedule_sess_for_deletion(sess); 1295 } 1296 1297 /* At this point tgt could be already dead */ 1298 } 1299 1300 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1301 uint16_t *loop_id) 1302 { 1303 struct qla_hw_data *ha = vha->hw; 1304 dma_addr_t gid_list_dma; 1305 struct gid_list_info *gid_list, *gid; 1306 int res, rc, i; 1307 uint16_t entries; 1308 1309 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1310 &gid_list_dma, GFP_KERNEL); 1311 if (!gid_list) { 1312 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1313 "qla_target(%d): DMA Alloc failed of %u\n", 1314 vha->vp_idx, qla2x00_gid_list_size(ha)); 1315 return -ENOMEM; 1316 } 1317 1318 /* Get list of logged in devices */ 1319 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1320 if (rc != QLA_SUCCESS) { 1321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1322 "qla_target(%d): get_id_list() failed: %x\n", 1323 vha->vp_idx, rc); 1324 res = -EBUSY; 1325 goto out_free_id_list; 1326 } 1327 1328 gid = gid_list; 1329 res = -ENOENT; 1330 for (i = 0; i < entries; i++) { 1331 if (gid->al_pa == s_id.al_pa && 1332 gid->area == s_id.area && 1333 gid->domain == s_id.domain) { 1334 *loop_id = le16_to_cpu(gid->loop_id); 1335 res = 0; 1336 break; 1337 } 1338 gid = (void *)gid + ha->gid_list_info_size; 1339 } 1340 1341 out_free_id_list: 1342 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1343 gid_list, gid_list_dma); 1344 return res; 1345 } 1346 1347 /* 1348 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1349 * Caller must put it. 1350 */ 1351 static struct fc_port *qlt_create_sess( 1352 struct scsi_qla_host *vha, 1353 fc_port_t *fcport, 1354 bool local) 1355 { 1356 struct qla_hw_data *ha = vha->hw; 1357 struct fc_port *sess = fcport; 1358 unsigned long flags; 1359 1360 if (vha->vha_tgt.qla_tgt->tgt_stop) 1361 return NULL; 1362 1363 if (fcport->se_sess) { 1364 if (!kref_get_unless_zero(&sess->sess_kref)) { 1365 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1366 "%s: kref_get_unless_zero failed for %8phC\n", 1367 __func__, sess->port_name); 1368 return NULL; 1369 } 1370 return fcport; 1371 } 1372 sess->tgt = vha->vha_tgt.qla_tgt; 1373 sess->local = local; 1374 1375 /* 1376 * Under normal circumstances we want to logout from firmware when 1377 * session eventually ends and release corresponding nport handle. 1378 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1379 * code will adjust these flags as necessary. 1380 */ 1381 sess->logout_on_delete = 1; 1382 sess->keep_nport_handle = 0; 1383 sess->logout_completed = 0; 1384 1385 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1386 &fcport->port_name[0], sess) < 0) { 1387 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1388 "(%d) %8phC check_initiator_node_acl failed\n", 1389 vha->vp_idx, fcport->port_name); 1390 return NULL; 1391 } else { 1392 kref_init(&fcport->sess_kref); 1393 /* 1394 * Take an extra reference to ->sess_kref here to handle 1395 * fc_port access across ->tgt.sess_lock reaquire. 1396 */ 1397 if (!kref_get_unless_zero(&sess->sess_kref)) { 1398 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1399 "%s: kref_get_unless_zero failed for %8phC\n", 1400 __func__, sess->port_name); 1401 return NULL; 1402 } 1403 1404 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1405 if (!IS_SW_RESV_ADDR(sess->d_id)) 1406 vha->vha_tgt.qla_tgt->sess_count++; 1407 1408 qlt_do_generation_tick(vha, &sess->generation); 1409 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1410 } 1411 1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1413 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1414 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1415 vha->vha_tgt.qla_tgt->sess_count); 1416 1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1418 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1419 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1420 vha->vp_idx, local ? "local " : "", fcport->port_name, 1421 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1422 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1423 1424 return sess; 1425 } 1426 1427 /* 1428 * max_gen - specifies maximum session generation 1429 * at which this deletion requestion is still valid 1430 */ 1431 void 1432 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1433 { 1434 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1435 struct fc_port *sess = fcport; 1436 unsigned long flags; 1437 1438 if (!vha->hw->tgt.tgt_ops) 1439 return; 1440 1441 if (!tgt) 1442 return; 1443 1444 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1445 if (tgt->tgt_stop) { 1446 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1447 return; 1448 } 1449 if (!sess->se_sess) { 1450 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1451 return; 1452 } 1453 1454 if (max_gen - sess->generation < 0) { 1455 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1456 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1457 "Ignoring stale deletion request for se_sess %p / sess %p" 1458 " for port %8phC, req_gen %d, sess_gen %d\n", 1459 sess->se_sess, sess, sess->port_name, max_gen, 1460 sess->generation); 1461 return; 1462 } 1463 1464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1465 1466 sess->local = 1; 1467 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1468 qlt_schedule_sess_for_deletion(sess); 1469 } 1470 1471 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1472 { 1473 struct qla_hw_data *ha = tgt->ha; 1474 unsigned long flags; 1475 int res; 1476 /* 1477 * We need to protect against race, when tgt is freed before or 1478 * inside wake_up() 1479 */ 1480 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1481 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1482 "tgt %p, sess_count=%d\n", 1483 tgt, tgt->sess_count); 1484 res = (tgt->sess_count == 0); 1485 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1486 1487 return res; 1488 } 1489 1490 /* Called by tcm_qla2xxx configfs code */ 1491 int qlt_stop_phase1(struct qla_tgt *tgt) 1492 { 1493 struct scsi_qla_host *vha = tgt->vha; 1494 struct qla_hw_data *ha = tgt->ha; 1495 unsigned long flags; 1496 1497 mutex_lock(&ha->optrom_mutex); 1498 mutex_lock(&qla_tgt_mutex); 1499 1500 if (tgt->tgt_stop || tgt->tgt_stopped) { 1501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1502 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1503 mutex_unlock(&qla_tgt_mutex); 1504 mutex_unlock(&ha->optrom_mutex); 1505 return -EPERM; 1506 } 1507 1508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1509 vha->host_no, vha); 1510 /* 1511 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1512 * Lock is needed, because we still can get an incoming packet. 1513 */ 1514 mutex_lock(&vha->vha_tgt.tgt_mutex); 1515 tgt->tgt_stop = 1; 1516 qlt_clear_tgt_db(tgt); 1517 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1518 mutex_unlock(&qla_tgt_mutex); 1519 1520 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1521 "Waiting for sess works (tgt %p)", tgt); 1522 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1523 while (!list_empty(&tgt->sess_works_list)) { 1524 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1525 flush_scheduled_work(); 1526 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1527 } 1528 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1529 1530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1531 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1532 1533 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1534 1535 /* Big hammer */ 1536 if (!ha->flags.host_shutting_down && 1537 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1538 qlt_disable_vha(vha); 1539 1540 /* Wait for sessions to clear out (just in case) */ 1541 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1542 mutex_unlock(&ha->optrom_mutex); 1543 1544 return 0; 1545 } 1546 EXPORT_SYMBOL(qlt_stop_phase1); 1547 1548 /* Called by tcm_qla2xxx configfs code */ 1549 void qlt_stop_phase2(struct qla_tgt *tgt) 1550 { 1551 scsi_qla_host_t *vha = tgt->vha; 1552 1553 if (tgt->tgt_stopped) { 1554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1555 "Already in tgt->tgt_stopped state\n"); 1556 dump_stack(); 1557 return; 1558 } 1559 if (!tgt->tgt_stop) { 1560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1561 "%s: phase1 stop is not completed\n", __func__); 1562 dump_stack(); 1563 return; 1564 } 1565 1566 mutex_lock(&vha->vha_tgt.tgt_mutex); 1567 tgt->tgt_stop = 0; 1568 tgt->tgt_stopped = 1; 1569 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1570 1571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1572 tgt); 1573 1574 switch (vha->qlini_mode) { 1575 case QLA2XXX_INI_MODE_EXCLUSIVE: 1576 vha->flags.online = 1; 1577 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1578 break; 1579 default: 1580 break; 1581 } 1582 } 1583 EXPORT_SYMBOL(qlt_stop_phase2); 1584 1585 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1586 static void qlt_release(struct qla_tgt *tgt) 1587 { 1588 scsi_qla_host_t *vha = tgt->vha; 1589 void *node; 1590 u64 key = 0; 1591 u16 i; 1592 struct qla_qpair_hint *h; 1593 struct qla_hw_data *ha = vha->hw; 1594 1595 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1596 qlt_stop_phase1(tgt); 1597 1598 if (!tgt->tgt_stopped) 1599 qlt_stop_phase2(tgt); 1600 1601 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1602 unsigned long flags; 1603 1604 h = &tgt->qphints[i]; 1605 if (h->qpair) { 1606 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1607 list_del(&h->hint_elem); 1608 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1609 h->qpair = NULL; 1610 } 1611 } 1612 kfree(tgt->qphints); 1613 mutex_lock(&qla_tgt_mutex); 1614 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1615 mutex_unlock(&qla_tgt_mutex); 1616 1617 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1618 btree_remove64(&tgt->lun_qpair_map, key); 1619 1620 btree_destroy64(&tgt->lun_qpair_map); 1621 1622 if (vha->vp_idx) 1623 if (ha->tgt.tgt_ops && 1624 ha->tgt.tgt_ops->remove_target && 1625 vha->vha_tgt.target_lport_ptr) 1626 ha->tgt.tgt_ops->remove_target(vha); 1627 1628 vha->vha_tgt.qla_tgt = NULL; 1629 1630 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1631 "Release of tgt %p finished\n", tgt); 1632 1633 kfree(tgt); 1634 } 1635 1636 /* ha->hardware_lock supposed to be held on entry */ 1637 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1638 const void *param, unsigned int param_size) 1639 { 1640 struct qla_tgt_sess_work_param *prm; 1641 unsigned long flags; 1642 1643 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1644 if (!prm) { 1645 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1646 "qla_target(%d): Unable to create session " 1647 "work, command will be refused", 0); 1648 return -ENOMEM; 1649 } 1650 1651 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1652 "Scheduling work (type %d, prm %p)" 1653 " to find session for param %p (size %d, tgt %p)\n", 1654 type, prm, param, param_size, tgt); 1655 1656 prm->type = type; 1657 memcpy(&prm->tm_iocb, param, param_size); 1658 1659 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1660 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1661 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1662 1663 schedule_work(&tgt->sess_work); 1664 1665 return 0; 1666 } 1667 1668 /* 1669 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1670 */ 1671 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1672 struct imm_ntfy_from_isp *ntfy, 1673 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1674 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1675 { 1676 struct scsi_qla_host *vha = qpair->vha; 1677 struct qla_hw_data *ha = vha->hw; 1678 request_t *pkt; 1679 struct nack_to_isp *nack; 1680 1681 if (!ha->flags.fw_started) 1682 return; 1683 1684 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1685 1686 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1687 if (!pkt) { 1688 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1689 "qla_target(%d): %s failed: unable to allocate " 1690 "request packet\n", vha->vp_idx, __func__); 1691 return; 1692 } 1693 1694 if (vha->vha_tgt.qla_tgt != NULL) 1695 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1696 1697 pkt->entry_type = NOTIFY_ACK_TYPE; 1698 pkt->entry_count = 1; 1699 1700 nack = (struct nack_to_isp *)pkt; 1701 nack->ox_id = ntfy->ox_id; 1702 1703 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1704 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1705 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1706 nack->u.isp24.flags = ntfy->u.isp24.flags & 1707 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1708 } 1709 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1710 nack->u.isp24.status = ntfy->u.isp24.status; 1711 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1712 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1713 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1714 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1715 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1716 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1717 nack->u.isp24.srr_reject_code = srr_reject_code; 1718 nack->u.isp24.srr_reject_code_expl = srr_explan; 1719 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1720 1721 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1722 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1723 vha->vp_idx, nack->u.isp24.status); 1724 1725 /* Memory Barrier */ 1726 wmb(); 1727 qla2x00_start_iocbs(vha, qpair->req); 1728 } 1729 1730 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1731 { 1732 struct scsi_qla_host *vha = mcmd->vha; 1733 struct qla_hw_data *ha = vha->hw; 1734 struct abts_resp_to_24xx *resp; 1735 __le32 f_ctl; 1736 uint32_t h; 1737 uint8_t *p; 1738 int rc; 1739 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1740 struct qla_qpair *qpair = mcmd->qpair; 1741 1742 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1743 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1744 ha, mcmd->fc_tm_rsp); 1745 1746 rc = qlt_check_reserve_free_req(qpair, 1); 1747 if (rc) { 1748 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1749 "qla_target(%d): %s failed: unable to allocate request packet\n", 1750 vha->vp_idx, __func__); 1751 return -EAGAIN; 1752 } 1753 1754 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1755 memset(resp, 0, sizeof(*resp)); 1756 1757 h = qlt_make_handle(qpair); 1758 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1759 /* 1760 * CTIO type 7 from the firmware doesn't provide a way to 1761 * know the initiator's LOOP ID, hence we can't find 1762 * the session and, so, the command. 1763 */ 1764 return -EAGAIN; 1765 } else { 1766 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1767 } 1768 1769 resp->handle = make_handle(qpair->req->id, h); 1770 resp->entry_type = ABTS_RESP_24XX; 1771 resp->entry_count = 1; 1772 resp->nport_handle = abts->nport_handle; 1773 resp->vp_index = vha->vp_idx; 1774 resp->sof_type = abts->sof_type; 1775 resp->exchange_address = abts->exchange_address; 1776 resp->fcp_hdr_le = abts->fcp_hdr_le; 1777 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1778 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1779 F_CTL_SEQ_INITIATIVE); 1780 p = (uint8_t *)&f_ctl; 1781 resp->fcp_hdr_le.f_ctl[0] = *p++; 1782 resp->fcp_hdr_le.f_ctl[1] = *p++; 1783 resp->fcp_hdr_le.f_ctl[2] = *p; 1784 1785 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1786 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1787 1788 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1789 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1790 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1791 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1792 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1793 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1794 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1795 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1796 } else { 1797 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1798 resp->payload.ba_rjt.reason_code = 1799 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1800 /* Other bytes are zero */ 1801 } 1802 1803 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1804 1805 /* Memory Barrier */ 1806 wmb(); 1807 if (qpair->reqq_start_iocbs) 1808 qpair->reqq_start_iocbs(qpair); 1809 else 1810 qla2x00_start_iocbs(vha, qpair->req); 1811 1812 return rc; 1813 } 1814 1815 /* 1816 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1817 */ 1818 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1819 struct abts_recv_from_24xx *abts, uint32_t status, 1820 bool ids_reversed) 1821 { 1822 struct scsi_qla_host *vha = qpair->vha; 1823 struct qla_hw_data *ha = vha->hw; 1824 struct abts_resp_to_24xx *resp; 1825 __le32 f_ctl; 1826 uint8_t *p; 1827 1828 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1829 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1830 ha, abts, status); 1831 1832 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1833 NULL); 1834 if (!resp) { 1835 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1836 "qla_target(%d): %s failed: unable to allocate " 1837 "request packet", vha->vp_idx, __func__); 1838 return; 1839 } 1840 1841 resp->entry_type = ABTS_RESP_24XX; 1842 resp->handle = QLA_TGT_SKIP_HANDLE; 1843 resp->entry_count = 1; 1844 resp->nport_handle = abts->nport_handle; 1845 resp->vp_index = vha->vp_idx; 1846 resp->sof_type = abts->sof_type; 1847 resp->exchange_address = abts->exchange_address; 1848 resp->fcp_hdr_le = abts->fcp_hdr_le; 1849 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1850 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1851 F_CTL_SEQ_INITIATIVE); 1852 p = (uint8_t *)&f_ctl; 1853 resp->fcp_hdr_le.f_ctl[0] = *p++; 1854 resp->fcp_hdr_le.f_ctl[1] = *p++; 1855 resp->fcp_hdr_le.f_ctl[2] = *p; 1856 if (ids_reversed) { 1857 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1858 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1859 } else { 1860 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1861 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1862 } 1863 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1864 if (status == FCP_TMF_CMPL) { 1865 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1866 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1867 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1868 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1869 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1870 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1871 } else { 1872 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1873 resp->payload.ba_rjt.reason_code = 1874 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1875 /* Other bytes are zero */ 1876 } 1877 1878 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1879 1880 /* Memory Barrier */ 1881 wmb(); 1882 if (qpair->reqq_start_iocbs) 1883 qpair->reqq_start_iocbs(qpair); 1884 else 1885 qla2x00_start_iocbs(vha, qpair->req); 1886 } 1887 1888 /* 1889 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1890 */ 1891 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1892 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1893 { 1894 struct ctio7_to_24xx *ctio; 1895 u16 tmp; 1896 struct abts_recv_from_24xx *entry; 1897 1898 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1899 if (ctio == NULL) { 1900 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1901 "qla_target(%d): %s failed: unable to allocate " 1902 "request packet\n", vha->vp_idx, __func__); 1903 return; 1904 } 1905 1906 if (mcmd) 1907 /* abts from remote port */ 1908 entry = &mcmd->orig_iocb.abts; 1909 else 1910 /* abts from this driver. */ 1911 entry = (struct abts_recv_from_24xx *)pkt; 1912 1913 /* 1914 * We've got on entrance firmware's response on by us generated 1915 * ABTS response. So, in it ID fields are reversed. 1916 */ 1917 1918 ctio->entry_type = CTIO_TYPE7; 1919 ctio->entry_count = 1; 1920 ctio->nport_handle = entry->nport_handle; 1921 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1922 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1923 ctio->vp_index = vha->vp_idx; 1924 ctio->exchange_addr = entry->exchange_addr_to_abort; 1925 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1926 1927 if (mcmd) { 1928 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1929 1930 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1931 tmp |= (mcmd->abort_io_attr << 9); 1932 else if (qpair->retry_term_cnt & 1) 1933 tmp |= (0x4 << 9); 1934 } else { 1935 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1936 1937 if (qpair->retry_term_cnt & 1) 1938 tmp |= (0x4 << 9); 1939 } 1940 ctio->u.status1.flags = cpu_to_le16(tmp); 1941 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1942 1943 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1944 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1945 le16_to_cpu(ctio->u.status1.flags), 1946 le16_to_cpu(ctio->u.status1.ox_id), 1947 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1948 1949 /* Memory Barrier */ 1950 wmb(); 1951 if (qpair->reqq_start_iocbs) 1952 qpair->reqq_start_iocbs(qpair); 1953 else 1954 qla2x00_start_iocbs(vha, qpair->req); 1955 1956 if (mcmd) 1957 qlt_build_abts_resp_iocb(mcmd); 1958 else 1959 qlt_24xx_send_abts_resp(qpair, 1960 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1961 1962 } 1963 1964 /* drop cmds for the given lun 1965 * XXX only looks for cmds on the port through which lun reset was recieved 1966 * XXX does not go through the list of other port (which may have cmds 1967 * for the same lun) 1968 */ 1969 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1970 { 1971 struct qla_tgt_sess_op *op; 1972 struct qla_tgt_cmd *cmd; 1973 uint32_t key; 1974 unsigned long flags; 1975 1976 key = sid_to_key(s_id); 1977 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1978 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1979 uint32_t op_key; 1980 u64 op_lun; 1981 1982 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1983 op_lun = scsilun_to_int( 1984 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1985 if (op_key == key && op_lun == lun) 1986 op->aborted = true; 1987 } 1988 1989 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1990 uint32_t op_key; 1991 u64 op_lun; 1992 1993 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1994 op_lun = scsilun_to_int( 1995 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1996 if (op_key == key && op_lun == lun) 1997 op->aborted = true; 1998 } 1999 2000 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2001 uint32_t cmd_key; 2002 u64 cmd_lun; 2003 2004 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2005 cmd_lun = scsilun_to_int( 2006 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2007 if (cmd_key == key && cmd_lun == lun) 2008 cmd->aborted = 1; 2009 } 2010 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2011 } 2012 2013 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2014 uint64_t unpacked_lun) 2015 { 2016 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2017 struct qla_qpair_hint *h = NULL; 2018 2019 if (vha->flags.qpairs_available) { 2020 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2021 if (!h) 2022 h = &tgt->qphints[0]; 2023 } else { 2024 h = &tgt->qphints[0]; 2025 } 2026 2027 return h; 2028 } 2029 2030 static void qlt_do_tmr_work(struct work_struct *work) 2031 { 2032 struct qla_tgt_mgmt_cmd *mcmd = 2033 container_of(work, struct qla_tgt_mgmt_cmd, work); 2034 struct qla_hw_data *ha = mcmd->vha->hw; 2035 int rc; 2036 uint32_t tag; 2037 unsigned long flags; 2038 2039 switch (mcmd->tmr_func) { 2040 case QLA_TGT_ABTS: 2041 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2042 break; 2043 default: 2044 tag = 0; 2045 break; 2046 } 2047 2048 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2049 mcmd->tmr_func, tag); 2050 2051 if (rc != 0) { 2052 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2053 switch (mcmd->tmr_func) { 2054 case QLA_TGT_ABTS: 2055 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2056 qlt_build_abts_resp_iocb(mcmd); 2057 break; 2058 case QLA_TGT_LUN_RESET: 2059 case QLA_TGT_CLEAR_TS: 2060 case QLA_TGT_ABORT_TS: 2061 case QLA_TGT_CLEAR_ACA: 2062 case QLA_TGT_TARGET_RESET: 2063 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2064 qla_sam_status); 2065 break; 2066 2067 case QLA_TGT_ABORT_ALL: 2068 case QLA_TGT_NEXUS_LOSS_SESS: 2069 case QLA_TGT_NEXUS_LOSS: 2070 qlt_send_notify_ack(mcmd->qpair, 2071 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2072 break; 2073 } 2074 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2075 2076 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2077 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2078 mcmd->vha->vp_idx, rc); 2079 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2080 } 2081 } 2082 2083 /* ha->hardware_lock supposed to be held on entry */ 2084 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2085 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2086 { 2087 struct qla_hw_data *ha = vha->hw; 2088 struct qla_tgt_mgmt_cmd *mcmd; 2089 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2090 struct qla_tgt_cmd *abort_cmd; 2091 2092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2093 "qla_target(%d): task abort (tag=%d)\n", 2094 vha->vp_idx, abts->exchange_addr_to_abort); 2095 2096 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2097 if (mcmd == NULL) { 2098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2099 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2100 vha->vp_idx, __func__); 2101 return -ENOMEM; 2102 } 2103 memset(mcmd, 0, sizeof(*mcmd)); 2104 mcmd->cmd_type = TYPE_TGT_TMCMD; 2105 mcmd->sess = sess; 2106 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2107 mcmd->reset_count = ha->base_qpair->chip_reset; 2108 mcmd->tmr_func = QLA_TGT_ABTS; 2109 mcmd->qpair = h->qpair; 2110 mcmd->vha = vha; 2111 2112 /* 2113 * LUN is looked up by target-core internally based on the passed 2114 * abts->exchange_addr_to_abort tag. 2115 */ 2116 mcmd->se_cmd.cpuid = h->cpuid; 2117 2118 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2119 le32_to_cpu(abts->exchange_addr_to_abort)); 2120 if (!abort_cmd) 2121 return -EIO; 2122 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2123 2124 if (abort_cmd->qpair) { 2125 mcmd->qpair = abort_cmd->qpair; 2126 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2127 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2128 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2129 } 2130 2131 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2132 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2133 2134 return 0; 2135 } 2136 2137 /* 2138 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2139 */ 2140 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2141 struct abts_recv_from_24xx *abts) 2142 { 2143 struct qla_hw_data *ha = vha->hw; 2144 struct fc_port *sess; 2145 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2146 be_id_t s_id; 2147 int rc; 2148 unsigned long flags; 2149 2150 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2151 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2152 "qla_target(%d): ABTS: Abort Sequence not " 2153 "supported\n", vha->vp_idx); 2154 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2155 false); 2156 return; 2157 } 2158 2159 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2161 "qla_target(%d): ABTS: Unknown Exchange " 2162 "Address received\n", vha->vp_idx); 2163 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2164 false); 2165 return; 2166 } 2167 2168 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2169 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2170 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2171 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2172 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2173 2174 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2175 2176 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2177 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2178 if (!sess) { 2179 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2180 "qla_target(%d): task abort for non-existent session\n", 2181 vha->vp_idx); 2182 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2183 2184 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2185 false); 2186 return; 2187 } 2188 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2189 2190 2191 if (sess->deleted) { 2192 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2193 false); 2194 return; 2195 } 2196 2197 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2198 if (rc != 0) { 2199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2200 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2201 vha->vp_idx, rc); 2202 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2203 false); 2204 return; 2205 } 2206 } 2207 2208 /* 2209 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2210 */ 2211 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2212 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2213 { 2214 struct scsi_qla_host *ha = mcmd->vha; 2215 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2216 struct ctio7_to_24xx *ctio; 2217 uint16_t temp; 2218 2219 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2220 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2221 ha, atio, resp_code); 2222 2223 2224 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2225 if (ctio == NULL) { 2226 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2227 "qla_target(%d): %s failed: unable to allocate " 2228 "request packet\n", ha->vp_idx, __func__); 2229 return; 2230 } 2231 2232 ctio->entry_type = CTIO_TYPE7; 2233 ctio->entry_count = 1; 2234 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2235 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2236 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2237 ctio->vp_index = ha->vp_idx; 2238 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2239 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2240 temp = (atio->u.isp24.attr << 9)| 2241 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2242 ctio->u.status1.flags = cpu_to_le16(temp); 2243 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2244 ctio->u.status1.ox_id = cpu_to_le16(temp); 2245 ctio->u.status1.scsi_status = 2246 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2247 ctio->u.status1.response_len = cpu_to_le16(8); 2248 ctio->u.status1.sense_data[0] = resp_code; 2249 2250 /* Memory Barrier */ 2251 wmb(); 2252 if (qpair->reqq_start_iocbs) 2253 qpair->reqq_start_iocbs(qpair); 2254 else 2255 qla2x00_start_iocbs(ha, qpair->req); 2256 } 2257 2258 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2259 { 2260 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2261 } 2262 EXPORT_SYMBOL(qlt_free_mcmd); 2263 2264 /* 2265 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2266 * reacquire 2267 */ 2268 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2269 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2270 { 2271 struct atio_from_isp *atio = &cmd->atio; 2272 struct ctio7_to_24xx *ctio; 2273 uint16_t temp; 2274 struct scsi_qla_host *vha = cmd->vha; 2275 2276 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2277 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2278 "sense_key=%02x, asc=%02x, ascq=%02x", 2279 vha, atio, scsi_status, sense_key, asc, ascq); 2280 2281 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2282 if (!ctio) { 2283 ql_dbg(ql_dbg_async, vha, 0x3067, 2284 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2285 vha->host_no, __func__); 2286 goto out; 2287 } 2288 2289 ctio->entry_type = CTIO_TYPE7; 2290 ctio->entry_count = 1; 2291 ctio->handle = QLA_TGT_SKIP_HANDLE; 2292 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2293 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2294 ctio->vp_index = vha->vp_idx; 2295 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2296 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2297 temp = (atio->u.isp24.attr << 9) | 2298 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2299 ctio->u.status1.flags = cpu_to_le16(temp); 2300 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2301 ctio->u.status1.ox_id = cpu_to_le16(temp); 2302 ctio->u.status1.scsi_status = 2303 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2304 ctio->u.status1.response_len = cpu_to_le16(18); 2305 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2306 2307 if (ctio->u.status1.residual != 0) 2308 ctio->u.status1.scsi_status |= 2309 cpu_to_le16(SS_RESIDUAL_UNDER); 2310 2311 /* Fixed format sense data. */ 2312 ctio->u.status1.sense_data[0] = 0x70; 2313 ctio->u.status1.sense_data[2] = sense_key; 2314 /* Additional sense length */ 2315 ctio->u.status1.sense_data[7] = 0xa; 2316 /* ASC and ASCQ */ 2317 ctio->u.status1.sense_data[12] = asc; 2318 ctio->u.status1.sense_data[13] = ascq; 2319 2320 /* Memory Barrier */ 2321 wmb(); 2322 2323 if (qpair->reqq_start_iocbs) 2324 qpair->reqq_start_iocbs(qpair); 2325 else 2326 qla2x00_start_iocbs(vha, qpair->req); 2327 2328 out: 2329 return; 2330 } 2331 2332 /* callback from target fabric module code */ 2333 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2334 { 2335 struct scsi_qla_host *vha = mcmd->sess->vha; 2336 struct qla_hw_data *ha = vha->hw; 2337 unsigned long flags; 2338 struct qla_qpair *qpair = mcmd->qpair; 2339 bool free_mcmd = true; 2340 2341 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2342 "TM response mcmd (%p) status %#x state %#x", 2343 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2344 2345 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2346 2347 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2348 /* 2349 * Either the port is not online or this request was from 2350 * previous life, just abort the processing. 2351 */ 2352 ql_dbg(ql_dbg_async, vha, 0xe100, 2353 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2354 vha->flags.online, qla2x00_reset_active(vha), 2355 mcmd->reset_count, qpair->chip_reset); 2356 ha->tgt.tgt_ops->free_mcmd(mcmd); 2357 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2358 return; 2359 } 2360 2361 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2362 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2363 case ELS_LOGO: 2364 case ELS_PRLO: 2365 case ELS_TPRLO: 2366 ql_dbg(ql_dbg_disc, vha, 0x2106, 2367 "TM response logo %8phC status %#x state %#x", 2368 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2369 mcmd->flags); 2370 qlt_schedule_sess_for_deletion(mcmd->sess); 2371 break; 2372 default: 2373 qlt_send_notify_ack(vha->hw->base_qpair, 2374 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2375 break; 2376 } 2377 } else { 2378 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2379 qlt_build_abts_resp_iocb(mcmd); 2380 free_mcmd = false; 2381 } else 2382 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2383 mcmd->fc_tm_rsp); 2384 } 2385 /* 2386 * Make the callback for ->free_mcmd() to queue_work() and invoke 2387 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2388 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2389 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2390 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2391 * qlt_xmit_tm_rsp() returns here.. 2392 */ 2393 if (free_mcmd) 2394 ha->tgt.tgt_ops->free_mcmd(mcmd); 2395 2396 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2397 } 2398 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2399 2400 /* No locks */ 2401 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2402 { 2403 struct qla_tgt_cmd *cmd = prm->cmd; 2404 2405 BUG_ON(cmd->sg_cnt == 0); 2406 2407 prm->sg = (struct scatterlist *)cmd->sg; 2408 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2409 cmd->sg_cnt, cmd->dma_data_direction); 2410 if (unlikely(prm->seg_cnt == 0)) 2411 goto out_err; 2412 2413 prm->cmd->sg_mapped = 1; 2414 2415 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2416 /* 2417 * If greater than four sg entries then we need to allocate 2418 * the continuation entries 2419 */ 2420 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2421 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2422 QLA_TGT_DATASEGS_PER_CMD_24XX, 2423 QLA_TGT_DATASEGS_PER_CONT_24XX); 2424 } else { 2425 /* DIF */ 2426 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2427 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2428 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2429 prm->tot_dsds = prm->seg_cnt; 2430 } else 2431 prm->tot_dsds = prm->seg_cnt; 2432 2433 if (cmd->prot_sg_cnt) { 2434 prm->prot_sg = cmd->prot_sg; 2435 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2436 cmd->prot_sg, cmd->prot_sg_cnt, 2437 cmd->dma_data_direction); 2438 if (unlikely(prm->prot_seg_cnt == 0)) 2439 goto out_err; 2440 2441 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2442 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2443 /* Dif Bundling not support here */ 2444 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2445 cmd->blk_sz); 2446 prm->tot_dsds += prm->prot_seg_cnt; 2447 } else 2448 prm->tot_dsds += prm->prot_seg_cnt; 2449 } 2450 } 2451 2452 return 0; 2453 2454 out_err: 2455 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2456 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2457 0, prm->cmd->sg_cnt); 2458 return -1; 2459 } 2460 2461 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2462 { 2463 struct qla_hw_data *ha; 2464 struct qla_qpair *qpair; 2465 2466 if (!cmd->sg_mapped) 2467 return; 2468 2469 qpair = cmd->qpair; 2470 2471 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2472 cmd->dma_data_direction); 2473 cmd->sg_mapped = 0; 2474 2475 if (cmd->prot_sg_cnt) 2476 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2477 cmd->dma_data_direction); 2478 2479 if (!cmd->ctx) 2480 return; 2481 ha = vha->hw; 2482 if (cmd->ctx_dsd_alloced) 2483 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2484 2485 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2486 } 2487 2488 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2489 uint32_t req_cnt) 2490 { 2491 uint32_t cnt; 2492 struct req_que *req = qpair->req; 2493 2494 if (req->cnt < (req_cnt + 2)) { 2495 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2496 rd_reg_dword_relaxed(req->req_q_out)); 2497 2498 if (req->ring_index < cnt) 2499 req->cnt = cnt - req->ring_index; 2500 else 2501 req->cnt = req->length - (req->ring_index - cnt); 2502 2503 if (unlikely(req->cnt < (req_cnt + 2))) 2504 return -EAGAIN; 2505 } 2506 2507 req->cnt -= req_cnt; 2508 2509 return 0; 2510 } 2511 2512 /* 2513 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2514 */ 2515 static inline void *qlt_get_req_pkt(struct req_que *req) 2516 { 2517 /* Adjust ring index. */ 2518 req->ring_index++; 2519 if (req->ring_index == req->length) { 2520 req->ring_index = 0; 2521 req->ring_ptr = req->ring; 2522 } else { 2523 req->ring_ptr++; 2524 } 2525 return (cont_entry_t *)req->ring_ptr; 2526 } 2527 2528 /* ha->hardware_lock supposed to be held on entry */ 2529 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2530 { 2531 uint32_t h; 2532 int index; 2533 uint8_t found = 0; 2534 struct req_que *req = qpair->req; 2535 2536 h = req->current_outstanding_cmd; 2537 2538 for (index = 1; index < req->num_outstanding_cmds; index++) { 2539 h++; 2540 if (h == req->num_outstanding_cmds) 2541 h = 1; 2542 2543 if (h == QLA_TGT_SKIP_HANDLE) 2544 continue; 2545 2546 if (!req->outstanding_cmds[h]) { 2547 found = 1; 2548 break; 2549 } 2550 } 2551 2552 if (found) { 2553 req->current_outstanding_cmd = h; 2554 } else { 2555 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2556 "qla_target(%d): Ran out of empty cmd slots\n", 2557 qpair->vha->vp_idx); 2558 h = QLA_TGT_NULL_HANDLE; 2559 } 2560 2561 return h; 2562 } 2563 2564 /* ha->hardware_lock supposed to be held on entry */ 2565 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2566 struct qla_tgt_prm *prm) 2567 { 2568 uint32_t h; 2569 struct ctio7_to_24xx *pkt; 2570 struct atio_from_isp *atio = &prm->cmd->atio; 2571 uint16_t temp; 2572 2573 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2574 prm->pkt = pkt; 2575 memset(pkt, 0, sizeof(*pkt)); 2576 2577 pkt->entry_type = CTIO_TYPE7; 2578 pkt->entry_count = (uint8_t)prm->req_cnt; 2579 pkt->vp_index = prm->cmd->vp_idx; 2580 2581 h = qlt_make_handle(qpair); 2582 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2583 /* 2584 * CTIO type 7 from the firmware doesn't provide a way to 2585 * know the initiator's LOOP ID, hence we can't find 2586 * the session and, so, the command. 2587 */ 2588 return -EAGAIN; 2589 } else 2590 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2591 2592 pkt->handle = make_handle(qpair->req->id, h); 2593 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2594 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2595 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2596 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2597 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2598 temp = atio->u.isp24.attr << 9; 2599 pkt->u.status0.flags |= cpu_to_le16(temp); 2600 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2601 pkt->u.status0.ox_id = cpu_to_le16(temp); 2602 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2603 2604 return 0; 2605 } 2606 2607 /* 2608 * ha->hardware_lock supposed to be held on entry. We have already made sure 2609 * that there is sufficient amount of request entries to not drop it. 2610 */ 2611 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2612 { 2613 int cnt; 2614 struct dsd64 *cur_dsd; 2615 2616 /* Build continuation packets */ 2617 while (prm->seg_cnt > 0) { 2618 cont_a64_entry_t *cont_pkt64 = 2619 (cont_a64_entry_t *)qlt_get_req_pkt( 2620 prm->cmd->qpair->req); 2621 2622 /* 2623 * Make sure that from cont_pkt64 none of 2624 * 64-bit specific fields used for 32-bit 2625 * addressing. Cast to (cont_entry_t *) for 2626 * that. 2627 */ 2628 2629 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2630 2631 cont_pkt64->entry_count = 1; 2632 cont_pkt64->sys_define = 0; 2633 2634 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2635 cur_dsd = cont_pkt64->dsd; 2636 2637 /* Load continuation entry data segments */ 2638 for (cnt = 0; 2639 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2640 cnt++, prm->seg_cnt--) { 2641 append_dsd64(&cur_dsd, prm->sg); 2642 prm->sg = sg_next(prm->sg); 2643 } 2644 } 2645 } 2646 2647 /* 2648 * ha->hardware_lock supposed to be held on entry. We have already made sure 2649 * that there is sufficient amount of request entries to not drop it. 2650 */ 2651 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2652 { 2653 int cnt; 2654 struct dsd64 *cur_dsd; 2655 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2656 2657 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2658 2659 /* Setup packet address segment pointer */ 2660 cur_dsd = &pkt24->u.status0.dsd; 2661 2662 /* Set total data segment count */ 2663 if (prm->seg_cnt) 2664 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2665 2666 if (prm->seg_cnt == 0) { 2667 /* No data transfer */ 2668 cur_dsd->address = 0; 2669 cur_dsd->length = 0; 2670 return; 2671 } 2672 2673 /* If scatter gather */ 2674 2675 /* Load command entry data segments */ 2676 for (cnt = 0; 2677 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2678 cnt++, prm->seg_cnt--) { 2679 append_dsd64(&cur_dsd, prm->sg); 2680 prm->sg = sg_next(prm->sg); 2681 } 2682 2683 qlt_load_cont_data_segments(prm); 2684 } 2685 2686 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2687 { 2688 return cmd->bufflen > 0; 2689 } 2690 2691 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2692 { 2693 struct qla_tgt_cmd *cmd; 2694 struct scsi_qla_host *vha; 2695 2696 /* asc 0x10=dif error */ 2697 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2698 cmd = prm->cmd; 2699 vha = cmd->vha; 2700 /* ASCQ */ 2701 switch (prm->sense_buffer[13]) { 2702 case 1: 2703 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2704 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2705 "se_cmd=%p tag[%x]", 2706 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2707 cmd->atio.u.isp24.exchange_addr); 2708 break; 2709 case 2: 2710 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2711 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2712 "se_cmd=%p tag[%x]", 2713 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2714 cmd->atio.u.isp24.exchange_addr); 2715 break; 2716 case 3: 2717 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2718 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2719 "se_cmd=%p tag[%x]", 2720 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2721 cmd->atio.u.isp24.exchange_addr); 2722 break; 2723 default: 2724 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2725 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2726 "se_cmd=%p tag[%x]", 2727 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2728 cmd->atio.u.isp24.exchange_addr); 2729 break; 2730 } 2731 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2732 } 2733 } 2734 2735 /* 2736 * Called without ha->hardware_lock held 2737 */ 2738 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2739 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2740 uint32_t *full_req_cnt) 2741 { 2742 struct se_cmd *se_cmd = &cmd->se_cmd; 2743 struct qla_qpair *qpair = cmd->qpair; 2744 2745 prm->cmd = cmd; 2746 prm->tgt = cmd->tgt; 2747 prm->pkt = NULL; 2748 prm->rq_result = scsi_status; 2749 prm->sense_buffer = &cmd->sense_buffer[0]; 2750 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2751 prm->sg = NULL; 2752 prm->seg_cnt = -1; 2753 prm->req_cnt = 1; 2754 prm->residual = 0; 2755 prm->add_status_pkt = 0; 2756 prm->prot_sg = NULL; 2757 prm->prot_seg_cnt = 0; 2758 prm->tot_dsds = 0; 2759 2760 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2761 if (qlt_pci_map_calc_cnt(prm) != 0) 2762 return -EAGAIN; 2763 } 2764 2765 *full_req_cnt = prm->req_cnt; 2766 2767 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2768 prm->residual = se_cmd->residual_count; 2769 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2770 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2771 prm->residual, se_cmd->tag, 2772 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2773 cmd->bufflen, prm->rq_result); 2774 prm->rq_result |= SS_RESIDUAL_UNDER; 2775 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2776 prm->residual = se_cmd->residual_count; 2777 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2778 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2779 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2780 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2781 prm->rq_result |= SS_RESIDUAL_OVER; 2782 } 2783 2784 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2785 /* 2786 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2787 * ignored in *xmit_response() below 2788 */ 2789 if (qlt_has_data(cmd)) { 2790 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2791 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2792 (prm->rq_result != 0))) { 2793 prm->add_status_pkt = 1; 2794 (*full_req_cnt)++; 2795 } 2796 } 2797 } 2798 2799 return 0; 2800 } 2801 2802 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2803 int sending_sense) 2804 { 2805 if (cmd->qpair->enable_class_2) 2806 return 0; 2807 2808 if (sending_sense) 2809 return cmd->conf_compl_supported; 2810 else 2811 return cmd->qpair->enable_explicit_conf && 2812 cmd->conf_compl_supported; 2813 } 2814 2815 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2816 struct qla_tgt_prm *prm) 2817 { 2818 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2819 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2820 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2821 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2822 ctio->u.status0.flags |= cpu_to_le16( 2823 CTIO7_FLAGS_EXPLICIT_CONFORM | 2824 CTIO7_FLAGS_CONFORM_REQ); 2825 } 2826 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2827 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2828 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2829 int i; 2830 2831 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2832 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2833 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2834 "Skipping EXPLICIT_CONFORM and " 2835 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2836 "non GOOD status\n"); 2837 goto skip_explict_conf; 2838 } 2839 ctio->u.status1.flags |= cpu_to_le16( 2840 CTIO7_FLAGS_EXPLICIT_CONFORM | 2841 CTIO7_FLAGS_CONFORM_REQ); 2842 } 2843 skip_explict_conf: 2844 ctio->u.status1.flags &= 2845 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2846 ctio->u.status1.flags |= 2847 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2848 ctio->u.status1.scsi_status |= 2849 cpu_to_le16(SS_SENSE_LEN_VALID); 2850 ctio->u.status1.sense_length = 2851 cpu_to_le16(prm->sense_buffer_len); 2852 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2853 uint32_t v; 2854 2855 v = get_unaligned_be32( 2856 &((uint32_t *)prm->sense_buffer)[i]); 2857 put_unaligned_le32(v, 2858 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2859 } 2860 qlt_print_dif_err(prm); 2861 2862 } else { 2863 ctio->u.status1.flags &= 2864 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2865 ctio->u.status1.flags |= 2866 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2867 ctio->u.status1.sense_length = 0; 2868 memset(ctio->u.status1.sense_data, 0, 2869 sizeof(ctio->u.status1.sense_data)); 2870 } 2871 2872 /* Sense with len > 24, is it possible ??? */ 2873 } 2874 2875 static inline int 2876 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2877 { 2878 switch (se_cmd->prot_op) { 2879 case TARGET_PROT_DOUT_INSERT: 2880 case TARGET_PROT_DIN_STRIP: 2881 if (ql2xenablehba_err_chk >= 1) 2882 return 1; 2883 break; 2884 case TARGET_PROT_DOUT_PASS: 2885 case TARGET_PROT_DIN_PASS: 2886 if (ql2xenablehba_err_chk >= 2) 2887 return 1; 2888 break; 2889 case TARGET_PROT_DIN_INSERT: 2890 case TARGET_PROT_DOUT_STRIP: 2891 return 1; 2892 default: 2893 break; 2894 } 2895 return 0; 2896 } 2897 2898 static inline int 2899 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2900 { 2901 switch (se_cmd->prot_op) { 2902 case TARGET_PROT_DIN_INSERT: 2903 case TARGET_PROT_DOUT_INSERT: 2904 case TARGET_PROT_DIN_STRIP: 2905 case TARGET_PROT_DOUT_STRIP: 2906 case TARGET_PROT_DIN_PASS: 2907 case TARGET_PROT_DOUT_PASS: 2908 return 1; 2909 default: 2910 return 0; 2911 } 2912 return 0; 2913 } 2914 2915 /* 2916 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2917 */ 2918 static void 2919 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2920 uint16_t *pfw_prot_opts) 2921 { 2922 struct se_cmd *se_cmd = &cmd->se_cmd; 2923 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2924 scsi_qla_host_t *vha = cmd->tgt->vha; 2925 struct qla_hw_data *ha = vha->hw; 2926 uint32_t t32 = 0; 2927 2928 /* 2929 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2930 * have been immplemented by TCM, before AppTag is avail. 2931 * Look for modesense_handlers[] 2932 */ 2933 ctx->app_tag = 0; 2934 ctx->app_tag_mask[0] = 0x0; 2935 ctx->app_tag_mask[1] = 0x0; 2936 2937 if (IS_PI_UNINIT_CAPABLE(ha)) { 2938 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2939 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2940 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2941 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2942 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2943 } 2944 2945 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2946 2947 switch (se_cmd->prot_type) { 2948 case TARGET_DIF_TYPE0_PROT: 2949 /* 2950 * No check for ql2xenablehba_err_chk, as it 2951 * would be an I/O error if hba tag generation 2952 * is not done. 2953 */ 2954 ctx->ref_tag = cpu_to_le32(lba); 2955 /* enable ALL bytes of the ref tag */ 2956 ctx->ref_tag_mask[0] = 0xff; 2957 ctx->ref_tag_mask[1] = 0xff; 2958 ctx->ref_tag_mask[2] = 0xff; 2959 ctx->ref_tag_mask[3] = 0xff; 2960 break; 2961 case TARGET_DIF_TYPE1_PROT: 2962 /* 2963 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2964 * REF tag, and 16 bit app tag. 2965 */ 2966 ctx->ref_tag = cpu_to_le32(lba); 2967 if (!qla_tgt_ref_mask_check(se_cmd) || 2968 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2969 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2970 break; 2971 } 2972 /* enable ALL bytes of the ref tag */ 2973 ctx->ref_tag_mask[0] = 0xff; 2974 ctx->ref_tag_mask[1] = 0xff; 2975 ctx->ref_tag_mask[2] = 0xff; 2976 ctx->ref_tag_mask[3] = 0xff; 2977 break; 2978 case TARGET_DIF_TYPE2_PROT: 2979 /* 2980 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2981 * tag has to match LBA in CDB + N 2982 */ 2983 ctx->ref_tag = cpu_to_le32(lba); 2984 if (!qla_tgt_ref_mask_check(se_cmd) || 2985 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2986 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2987 break; 2988 } 2989 /* enable ALL bytes of the ref tag */ 2990 ctx->ref_tag_mask[0] = 0xff; 2991 ctx->ref_tag_mask[1] = 0xff; 2992 ctx->ref_tag_mask[2] = 0xff; 2993 ctx->ref_tag_mask[3] = 0xff; 2994 break; 2995 case TARGET_DIF_TYPE3_PROT: 2996 /* For TYPE 3 protection: 16 bit GUARD only */ 2997 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2998 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2999 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3000 break; 3001 } 3002 } 3003 3004 static inline int 3005 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3006 { 3007 struct dsd64 *cur_dsd; 3008 uint32_t transfer_length = 0; 3009 uint32_t data_bytes; 3010 uint32_t dif_bytes; 3011 uint8_t bundling = 1; 3012 struct crc_context *crc_ctx_pkt = NULL; 3013 struct qla_hw_data *ha; 3014 struct ctio_crc2_to_fw *pkt; 3015 dma_addr_t crc_ctx_dma; 3016 uint16_t fw_prot_opts = 0; 3017 struct qla_tgt_cmd *cmd = prm->cmd; 3018 struct se_cmd *se_cmd = &cmd->se_cmd; 3019 uint32_t h; 3020 struct atio_from_isp *atio = &prm->cmd->atio; 3021 struct qla_tc_param tc; 3022 uint16_t t16; 3023 scsi_qla_host_t *vha = cmd->vha; 3024 3025 ha = vha->hw; 3026 3027 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3028 prm->pkt = pkt; 3029 memset(pkt, 0, sizeof(*pkt)); 3030 3031 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3032 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3033 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3034 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3035 3036 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3037 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3038 bundling = 0; 3039 3040 /* Compute dif len and adjust data len to incude protection */ 3041 data_bytes = cmd->bufflen; 3042 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3043 3044 switch (se_cmd->prot_op) { 3045 case TARGET_PROT_DIN_INSERT: 3046 case TARGET_PROT_DOUT_STRIP: 3047 transfer_length = data_bytes; 3048 if (cmd->prot_sg_cnt) 3049 data_bytes += dif_bytes; 3050 break; 3051 case TARGET_PROT_DIN_STRIP: 3052 case TARGET_PROT_DOUT_INSERT: 3053 case TARGET_PROT_DIN_PASS: 3054 case TARGET_PROT_DOUT_PASS: 3055 transfer_length = data_bytes + dif_bytes; 3056 break; 3057 default: 3058 BUG(); 3059 break; 3060 } 3061 3062 if (!qlt_hba_err_chk_enabled(se_cmd)) 3063 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3064 /* HBA error checking enabled */ 3065 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3066 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3067 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3068 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3069 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3070 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3071 } 3072 3073 switch (se_cmd->prot_op) { 3074 case TARGET_PROT_DIN_INSERT: 3075 case TARGET_PROT_DOUT_INSERT: 3076 fw_prot_opts |= PO_MODE_DIF_INSERT; 3077 break; 3078 case TARGET_PROT_DIN_STRIP: 3079 case TARGET_PROT_DOUT_STRIP: 3080 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3081 break; 3082 case TARGET_PROT_DIN_PASS: 3083 case TARGET_PROT_DOUT_PASS: 3084 fw_prot_opts |= PO_MODE_DIF_PASS; 3085 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3086 break; 3087 default:/* Normal Request */ 3088 fw_prot_opts |= PO_MODE_DIF_PASS; 3089 break; 3090 } 3091 3092 /* ---- PKT ---- */ 3093 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3094 pkt->entry_type = CTIO_CRC2; 3095 pkt->entry_count = 1; 3096 pkt->vp_index = cmd->vp_idx; 3097 3098 h = qlt_make_handle(qpair); 3099 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3100 /* 3101 * CTIO type 7 from the firmware doesn't provide a way to 3102 * know the initiator's LOOP ID, hence we can't find 3103 * the session and, so, the command. 3104 */ 3105 return -EAGAIN; 3106 } else 3107 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3108 3109 pkt->handle = make_handle(qpair->req->id, h); 3110 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3111 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3112 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3113 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3114 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3115 3116 /* silence compile warning */ 3117 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3118 pkt->ox_id = cpu_to_le16(t16); 3119 3120 t16 = (atio->u.isp24.attr << 9); 3121 pkt->flags |= cpu_to_le16(t16); 3122 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3123 3124 /* Set transfer direction */ 3125 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3126 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3127 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3128 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3129 3130 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3131 /* Fibre channel byte count */ 3132 pkt->transfer_length = cpu_to_le32(transfer_length); 3133 3134 /* ----- CRC context -------- */ 3135 3136 /* Allocate CRC context from global pool */ 3137 crc_ctx_pkt = cmd->ctx = 3138 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3139 3140 if (!crc_ctx_pkt) 3141 goto crc_queuing_error; 3142 3143 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3144 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3145 3146 /* Set handle */ 3147 crc_ctx_pkt->handle = pkt->handle; 3148 3149 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3150 3151 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3152 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3153 3154 if (!bundling) { 3155 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3156 } else { 3157 /* 3158 * Configure Bundling if we need to fetch interlaving 3159 * protection PCI accesses 3160 */ 3161 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3162 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3163 crc_ctx_pkt->u.bundling.dseg_count = 3164 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3165 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3166 } 3167 3168 /* Finish the common fields of CRC pkt */ 3169 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3170 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3171 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3172 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3173 3174 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3175 tc.vha = vha; 3176 tc.blk_sz = cmd->blk_sz; 3177 tc.bufflen = cmd->bufflen; 3178 tc.sg = cmd->sg; 3179 tc.prot_sg = cmd->prot_sg; 3180 tc.ctx = crc_ctx_pkt; 3181 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3182 3183 /* Walks data segments */ 3184 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3185 3186 if (!bundling && prm->prot_seg_cnt) { 3187 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3188 prm->tot_dsds, &tc)) 3189 goto crc_queuing_error; 3190 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3191 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3192 goto crc_queuing_error; 3193 3194 if (bundling && prm->prot_seg_cnt) { 3195 /* Walks dif segments */ 3196 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3197 3198 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3199 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3200 prm->prot_seg_cnt, cmd)) 3201 goto crc_queuing_error; 3202 } 3203 return QLA_SUCCESS; 3204 3205 crc_queuing_error: 3206 /* Cleanup will be performed by the caller */ 3207 qpair->req->outstanding_cmds[h] = NULL; 3208 3209 return QLA_FUNCTION_FAILED; 3210 } 3211 3212 /* 3213 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3214 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3215 */ 3216 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3217 uint8_t scsi_status) 3218 { 3219 struct scsi_qla_host *vha = cmd->vha; 3220 struct qla_qpair *qpair = cmd->qpair; 3221 struct ctio7_to_24xx *pkt; 3222 struct qla_tgt_prm prm; 3223 uint32_t full_req_cnt = 0; 3224 unsigned long flags = 0; 3225 int res; 3226 3227 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3228 (cmd->sess && cmd->sess->deleted)) { 3229 cmd->state = QLA_TGT_STATE_PROCESSED; 3230 return 0; 3231 } 3232 3233 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3234 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3235 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3236 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3237 &cmd->se_cmd, qpair->id); 3238 3239 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3240 &full_req_cnt); 3241 if (unlikely(res != 0)) { 3242 return res; 3243 } 3244 3245 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3246 3247 if (xmit_type == QLA_TGT_XMIT_STATUS) 3248 qpair->tgt_counters.core_qla_snd_status++; 3249 else 3250 qpair->tgt_counters.core_qla_que_buf++; 3251 3252 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3253 /* 3254 * Either the port is not online or this request was from 3255 * previous life, just abort the processing. 3256 */ 3257 cmd->state = QLA_TGT_STATE_PROCESSED; 3258 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3259 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3260 vha->flags.online, qla2x00_reset_active(vha), 3261 cmd->reset_count, qpair->chip_reset); 3262 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3263 return 0; 3264 } 3265 3266 /* Does F/W have an IOCBs for this request */ 3267 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3268 if (unlikely(res)) 3269 goto out_unmap_unlock; 3270 3271 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3272 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3273 else 3274 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3275 if (unlikely(res != 0)) { 3276 qpair->req->cnt += full_req_cnt; 3277 goto out_unmap_unlock; 3278 } 3279 3280 pkt = (struct ctio7_to_24xx *)prm.pkt; 3281 3282 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3283 pkt->u.status0.flags |= 3284 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3285 CTIO7_FLAGS_STATUS_MODE_0); 3286 3287 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3288 qlt_load_data_segments(&prm); 3289 3290 if (prm.add_status_pkt == 0) { 3291 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3292 pkt->u.status0.scsi_status = 3293 cpu_to_le16(prm.rq_result); 3294 pkt->u.status0.residual = 3295 cpu_to_le32(prm.residual); 3296 pkt->u.status0.flags |= cpu_to_le16( 3297 CTIO7_FLAGS_SEND_STATUS); 3298 if (qlt_need_explicit_conf(cmd, 0)) { 3299 pkt->u.status0.flags |= 3300 cpu_to_le16( 3301 CTIO7_FLAGS_EXPLICIT_CONFORM | 3302 CTIO7_FLAGS_CONFORM_REQ); 3303 } 3304 } 3305 3306 } else { 3307 /* 3308 * We have already made sure that there is sufficient 3309 * amount of request entries to not drop HW lock in 3310 * req_pkt(). 3311 */ 3312 struct ctio7_to_24xx *ctio = 3313 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3314 qpair->req); 3315 3316 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3317 "Building additional status packet 0x%p.\n", 3318 ctio); 3319 3320 /* 3321 * T10Dif: ctio_crc2_to_fw overlay ontop of 3322 * ctio7_to_24xx 3323 */ 3324 memcpy(ctio, pkt, sizeof(*ctio)); 3325 /* reset back to CTIO7 */ 3326 ctio->entry_count = 1; 3327 ctio->entry_type = CTIO_TYPE7; 3328 ctio->dseg_count = 0; 3329 ctio->u.status1.flags &= ~cpu_to_le16( 3330 CTIO7_FLAGS_DATA_IN); 3331 3332 /* Real finish is ctio_m1's finish */ 3333 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3334 pkt->u.status0.flags |= cpu_to_le16( 3335 CTIO7_FLAGS_DONT_RET_CTIO); 3336 3337 /* qlt_24xx_init_ctio_to_isp will correct 3338 * all neccessary fields that's part of CTIO7. 3339 * There should be no residual of CTIO-CRC2 data. 3340 */ 3341 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3342 &prm); 3343 } 3344 } else 3345 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3346 3347 3348 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3349 cmd->cmd_sent_to_fw = 1; 3350 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3351 3352 /* Memory Barrier */ 3353 wmb(); 3354 if (qpair->reqq_start_iocbs) 3355 qpair->reqq_start_iocbs(qpair); 3356 else 3357 qla2x00_start_iocbs(vha, qpair->req); 3358 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3359 3360 return 0; 3361 3362 out_unmap_unlock: 3363 qlt_unmap_sg(vha, cmd); 3364 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3365 3366 return res; 3367 } 3368 EXPORT_SYMBOL(qlt_xmit_response); 3369 3370 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3371 { 3372 struct ctio7_to_24xx *pkt; 3373 struct scsi_qla_host *vha = cmd->vha; 3374 struct qla_tgt *tgt = cmd->tgt; 3375 struct qla_tgt_prm prm; 3376 unsigned long flags = 0; 3377 int res = 0; 3378 struct qla_qpair *qpair = cmd->qpair; 3379 3380 memset(&prm, 0, sizeof(prm)); 3381 prm.cmd = cmd; 3382 prm.tgt = tgt; 3383 prm.sg = NULL; 3384 prm.req_cnt = 1; 3385 3386 /* Calculate number of entries and segments required */ 3387 if (qlt_pci_map_calc_cnt(&prm) != 0) 3388 return -EAGAIN; 3389 3390 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3391 (cmd->sess && cmd->sess->deleted)) { 3392 /* 3393 * Either the port is not online or this request was from 3394 * previous life, just abort the processing. 3395 */ 3396 cmd->aborted = 1; 3397 cmd->write_data_transferred = 0; 3398 cmd->state = QLA_TGT_STATE_DATA_IN; 3399 vha->hw->tgt.tgt_ops->handle_data(cmd); 3400 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3401 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3402 vha->flags.online, qla2x00_reset_active(vha), 3403 cmd->reset_count, qpair->chip_reset); 3404 return 0; 3405 } 3406 3407 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3408 /* Does F/W have an IOCBs for this request */ 3409 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3410 if (res != 0) 3411 goto out_unlock_free_unmap; 3412 if (cmd->se_cmd.prot_op) 3413 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3414 else 3415 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3416 3417 if (unlikely(res != 0)) { 3418 qpair->req->cnt += prm.req_cnt; 3419 goto out_unlock_free_unmap; 3420 } 3421 3422 pkt = (struct ctio7_to_24xx *)prm.pkt; 3423 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3424 CTIO7_FLAGS_STATUS_MODE_0); 3425 3426 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3427 qlt_load_data_segments(&prm); 3428 3429 cmd->state = QLA_TGT_STATE_NEED_DATA; 3430 cmd->cmd_sent_to_fw = 1; 3431 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3432 3433 /* Memory Barrier */ 3434 wmb(); 3435 if (qpair->reqq_start_iocbs) 3436 qpair->reqq_start_iocbs(qpair); 3437 else 3438 qla2x00_start_iocbs(vha, qpair->req); 3439 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3440 3441 return res; 3442 3443 out_unlock_free_unmap: 3444 qlt_unmap_sg(vha, cmd); 3445 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3446 3447 return res; 3448 } 3449 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3450 3451 3452 /* 3453 * it is assumed either hardware_lock or qpair lock is held. 3454 */ 3455 static void 3456 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3457 struct ctio_crc_from_fw *sts) 3458 { 3459 uint8_t *ap = &sts->actual_dif[0]; 3460 uint8_t *ep = &sts->expected_dif[0]; 3461 uint64_t lba = cmd->se_cmd.t_task_lba; 3462 uint8_t scsi_status, sense_key, asc, ascq; 3463 unsigned long flags; 3464 struct scsi_qla_host *vha = cmd->vha; 3465 3466 cmd->trc_flags |= TRC_DIF_ERR; 3467 3468 cmd->a_guard = get_unaligned_be16(ap + 0); 3469 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3470 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3471 3472 cmd->e_guard = get_unaligned_be16(ep + 0); 3473 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3474 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3475 3476 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3477 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3478 3479 scsi_status = sense_key = asc = ascq = 0; 3480 3481 /* check appl tag */ 3482 if (cmd->e_app_tag != cmd->a_app_tag) { 3483 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3484 "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]", 3485 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3486 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3487 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3488 cmd->atio.u.isp24.fcp_hdr.ox_id); 3489 3490 cmd->dif_err_code = DIF_ERR_APP; 3491 scsi_status = SAM_STAT_CHECK_CONDITION; 3492 sense_key = ABORTED_COMMAND; 3493 asc = 0x10; 3494 ascq = 0x2; 3495 } 3496 3497 /* check ref tag */ 3498 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3499 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3500 "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] ", 3501 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3502 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3503 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3504 cmd->atio.u.isp24.fcp_hdr.ox_id); 3505 3506 cmd->dif_err_code = DIF_ERR_REF; 3507 scsi_status = SAM_STAT_CHECK_CONDITION; 3508 sense_key = ABORTED_COMMAND; 3509 asc = 0x10; 3510 ascq = 0x3; 3511 goto out; 3512 } 3513 3514 /* check guard */ 3515 if (cmd->e_guard != cmd->a_guard) { 3516 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3517 "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]", 3518 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3519 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3520 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3521 cmd->atio.u.isp24.fcp_hdr.ox_id); 3522 3523 cmd->dif_err_code = DIF_ERR_GRD; 3524 scsi_status = SAM_STAT_CHECK_CONDITION; 3525 sense_key = ABORTED_COMMAND; 3526 asc = 0x10; 3527 ascq = 0x1; 3528 } 3529 out: 3530 switch (cmd->state) { 3531 case QLA_TGT_STATE_NEED_DATA: 3532 /* handle_data will load DIF error code */ 3533 cmd->state = QLA_TGT_STATE_DATA_IN; 3534 vha->hw->tgt.tgt_ops->handle_data(cmd); 3535 break; 3536 default: 3537 spin_lock_irqsave(&cmd->cmd_lock, flags); 3538 if (cmd->aborted) { 3539 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3540 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3541 break; 3542 } 3543 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3544 3545 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3546 ascq); 3547 /* assume scsi status gets out on the wire. 3548 * Will not wait for completion. 3549 */ 3550 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3551 break; 3552 } 3553 } 3554 3555 /* If hardware_lock held on entry, might drop it, then reaquire */ 3556 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3557 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3558 struct imm_ntfy_from_isp *ntfy) 3559 { 3560 struct nack_to_isp *nack; 3561 struct qla_hw_data *ha = vha->hw; 3562 request_t *pkt; 3563 int ret = 0; 3564 3565 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3566 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3567 3568 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3569 if (pkt == NULL) { 3570 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3571 "qla_target(%d): %s failed: unable to allocate " 3572 "request packet\n", vha->vp_idx, __func__); 3573 return -ENOMEM; 3574 } 3575 3576 pkt->entry_type = NOTIFY_ACK_TYPE; 3577 pkt->entry_count = 1; 3578 pkt->handle = QLA_TGT_SKIP_HANDLE; 3579 3580 nack = (struct nack_to_isp *)pkt; 3581 nack->ox_id = ntfy->ox_id; 3582 3583 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3584 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3585 nack->u.isp24.flags = ntfy->u.isp24.flags & 3586 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3587 } 3588 3589 /* terminate */ 3590 nack->u.isp24.flags |= 3591 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3592 3593 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3594 nack->u.isp24.status = ntfy->u.isp24.status; 3595 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3596 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3597 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3598 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3599 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3600 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3601 3602 qla2x00_start_iocbs(vha, vha->req); 3603 return ret; 3604 } 3605 3606 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3607 struct imm_ntfy_from_isp *imm, int ha_locked) 3608 { 3609 int rc; 3610 3611 WARN_ON_ONCE(!ha_locked); 3612 rc = __qlt_send_term_imm_notif(vha, imm); 3613 pr_debug("rc = %d\n", rc); 3614 } 3615 3616 /* 3617 * If hardware_lock held on entry, might drop it, then reaquire 3618 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3619 */ 3620 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3621 struct qla_tgt_cmd *cmd, 3622 struct atio_from_isp *atio) 3623 { 3624 struct scsi_qla_host *vha = qpair->vha; 3625 struct ctio7_to_24xx *ctio24; 3626 struct qla_hw_data *ha = vha->hw; 3627 request_t *pkt; 3628 int ret = 0; 3629 uint16_t temp; 3630 3631 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3632 3633 if (cmd) 3634 vha = cmd->vha; 3635 3636 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3637 if (pkt == NULL) { 3638 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3639 "qla_target(%d): %s failed: unable to allocate " 3640 "request packet\n", vha->vp_idx, __func__); 3641 return -ENOMEM; 3642 } 3643 3644 if (cmd != NULL) { 3645 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3646 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3647 "qla_target(%d): Terminating cmd %p with " 3648 "incorrect state %d\n", vha->vp_idx, cmd, 3649 cmd->state); 3650 } else 3651 ret = 1; 3652 } 3653 3654 qpair->tgt_counters.num_term_xchg_sent++; 3655 pkt->entry_count = 1; 3656 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3657 3658 ctio24 = (struct ctio7_to_24xx *)pkt; 3659 ctio24->entry_type = CTIO_TYPE7; 3660 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3661 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3662 ctio24->vp_index = vha->vp_idx; 3663 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3664 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3665 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3666 CTIO7_FLAGS_TERMINATE; 3667 ctio24->u.status1.flags = cpu_to_le16(temp); 3668 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3669 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3670 3671 /* Memory Barrier */ 3672 wmb(); 3673 if (qpair->reqq_start_iocbs) 3674 qpair->reqq_start_iocbs(qpair); 3675 else 3676 qla2x00_start_iocbs(vha, qpair->req); 3677 return ret; 3678 } 3679 3680 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3681 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3682 int ul_abort) 3683 { 3684 struct scsi_qla_host *vha; 3685 unsigned long flags = 0; 3686 int rc; 3687 3688 /* why use different vha? NPIV */ 3689 if (cmd) 3690 vha = cmd->vha; 3691 else 3692 vha = qpair->vha; 3693 3694 if (ha_locked) { 3695 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3696 if (rc == -ENOMEM) 3697 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3698 goto done; 3699 } 3700 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3701 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3702 if (rc == -ENOMEM) 3703 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3704 3705 done: 3706 if (cmd && !ul_abort && !cmd->aborted) { 3707 if (cmd->sg_mapped) 3708 qlt_unmap_sg(vha, cmd); 3709 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3710 } 3711 3712 if (!ha_locked) 3713 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3714 3715 return; 3716 } 3717 3718 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3719 { 3720 struct list_head free_list; 3721 struct qla_tgt_cmd *cmd, *tcmd; 3722 3723 vha->hw->tgt.leak_exchg_thresh_hold = 3724 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3725 3726 cmd = tcmd = NULL; 3727 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3728 INIT_LIST_HEAD(&free_list); 3729 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3730 3731 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3732 list_del(&cmd->cmd_list); 3733 /* This cmd was never sent to TCM. There is no need 3734 * to schedule free or call free_cmd 3735 */ 3736 qlt_free_cmd(cmd); 3737 vha->hw->tgt.num_qfull_cmds_alloc--; 3738 } 3739 } 3740 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3741 } 3742 3743 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3744 { 3745 uint32_t total_leaked; 3746 3747 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3748 3749 if (vha->hw->tgt.leak_exchg_thresh_hold && 3750 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3751 3752 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3753 "Chip reset due to exchange starvation: %d/%d.\n", 3754 total_leaked, vha->hw->cur_fw_xcb_count); 3755 3756 if (IS_P3P_TYPE(vha->hw)) 3757 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3758 else 3759 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3760 qla2xxx_wake_dpc(vha); 3761 } 3762 3763 } 3764 3765 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3766 { 3767 struct qla_tgt *tgt = cmd->tgt; 3768 struct scsi_qla_host *vha = tgt->vha; 3769 struct se_cmd *se_cmd = &cmd->se_cmd; 3770 unsigned long flags; 3771 3772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3773 "qla_target(%d): terminating exchange for aborted cmd=%p " 3774 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3775 se_cmd->tag); 3776 3777 spin_lock_irqsave(&cmd->cmd_lock, flags); 3778 if (cmd->aborted) { 3779 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3780 /* 3781 * It's normal to see 2 calls in this path: 3782 * 1) XFER Rdy completion + CMD_T_ABORT 3783 * 2) TCM TMR - drain_state_list 3784 */ 3785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3786 "multiple abort. %p transport_state %x, t_state %x, " 3787 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3788 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3789 return -EIO; 3790 } 3791 cmd->aborted = 1; 3792 cmd->trc_flags |= TRC_ABORT; 3793 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3794 3795 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3796 return 0; 3797 } 3798 EXPORT_SYMBOL(qlt_abort_cmd); 3799 3800 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3801 { 3802 struct fc_port *sess = cmd->sess; 3803 3804 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3805 "%s: se_cmd[%p] ox_id %04x\n", 3806 __func__, &cmd->se_cmd, 3807 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3808 3809 BUG_ON(cmd->cmd_in_wq); 3810 3811 if (cmd->sg_mapped) 3812 qlt_unmap_sg(cmd->vha, cmd); 3813 3814 if (!cmd->q_full) 3815 qlt_decr_num_pend_cmds(cmd->vha); 3816 3817 BUG_ON(cmd->sg_mapped); 3818 cmd->jiffies_at_free = get_jiffies_64(); 3819 if (unlikely(cmd->free_sg)) 3820 kfree(cmd->sg); 3821 3822 if (!sess || !sess->se_sess) { 3823 WARN_ON(1); 3824 return; 3825 } 3826 cmd->jiffies_at_free = get_jiffies_64(); 3827 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3828 } 3829 EXPORT_SYMBOL(qlt_free_cmd); 3830 3831 /* 3832 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3833 */ 3834 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3835 struct qla_tgt_cmd *cmd, uint32_t status) 3836 { 3837 int term = 0; 3838 struct scsi_qla_host *vha = qpair->vha; 3839 3840 if (cmd->se_cmd.prot_op) 3841 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3842 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3843 "se_cmd=%p tag[%x] op %#x/%s", 3844 cmd->lba, cmd->lba, 3845 cmd->num_blks, &cmd->se_cmd, 3846 cmd->atio.u.isp24.exchange_addr, 3847 cmd->se_cmd.prot_op, 3848 prot_op_str(cmd->se_cmd.prot_op)); 3849 3850 if (ctio != NULL) { 3851 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3852 3853 term = !(c->flags & 3854 cpu_to_le16(OF_TERM_EXCH)); 3855 } else 3856 term = 1; 3857 3858 if (term) 3859 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3860 3861 return term; 3862 } 3863 3864 3865 /* ha->hardware_lock supposed to be held on entry */ 3866 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3867 struct rsp_que *rsp, uint32_t handle, void *ctio) 3868 { 3869 void *cmd = NULL; 3870 struct req_que *req; 3871 int qid = GET_QID(handle); 3872 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3873 3874 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3875 return NULL; 3876 3877 if (qid == rsp->req->id) { 3878 req = rsp->req; 3879 } else if (vha->hw->req_q_map[qid]) { 3880 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3881 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3882 vha->vp_idx, rsp->id, handle); 3883 req = vha->hw->req_q_map[qid]; 3884 } else { 3885 return NULL; 3886 } 3887 3888 h &= QLA_CMD_HANDLE_MASK; 3889 3890 if (h != QLA_TGT_NULL_HANDLE) { 3891 if (unlikely(h >= req->num_outstanding_cmds)) { 3892 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3893 "qla_target(%d): Wrong handle %x received\n", 3894 vha->vp_idx, handle); 3895 return NULL; 3896 } 3897 3898 cmd = req->outstanding_cmds[h]; 3899 if (unlikely(cmd == NULL)) { 3900 ql_dbg(ql_dbg_async, vha, 0xe053, 3901 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3902 vha->vp_idx, handle, req->id, rsp->id); 3903 return NULL; 3904 } 3905 req->outstanding_cmds[h] = NULL; 3906 } else if (ctio != NULL) { 3907 /* We can't get loop ID from CTIO7 */ 3908 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3909 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3910 "support NULL handles\n", vha->vp_idx); 3911 return NULL; 3912 } 3913 3914 return cmd; 3915 } 3916 3917 /* 3918 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3919 */ 3920 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3921 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3922 { 3923 struct qla_hw_data *ha = vha->hw; 3924 struct se_cmd *se_cmd; 3925 struct qla_tgt_cmd *cmd; 3926 struct qla_qpair *qpair = rsp->qpair; 3927 3928 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3929 /* That could happen only in case of an error/reset/abort */ 3930 if (status != CTIO_SUCCESS) { 3931 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3932 "Intermediate CTIO received" 3933 " (status %x)\n", status); 3934 } 3935 return; 3936 } 3937 3938 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3939 if (cmd == NULL) 3940 return; 3941 3942 se_cmd = &cmd->se_cmd; 3943 cmd->cmd_sent_to_fw = 0; 3944 3945 qlt_unmap_sg(vha, cmd); 3946 3947 if (unlikely(status != CTIO_SUCCESS)) { 3948 switch (status & 0xFFFF) { 3949 case CTIO_INVALID_RX_ID: 3950 if (printk_ratelimit()) 3951 dev_info(&vha->hw->pdev->dev, 3952 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3953 vha->vp_idx, cmd->atio.u.isp24.attr, 3954 ((cmd->ctio_flags >> 9) & 0xf), 3955 cmd->ctio_flags); 3956 3957 break; 3958 case CTIO_LIP_RESET: 3959 case CTIO_TARGET_RESET: 3960 case CTIO_ABORTED: 3961 /* driver request abort via Terminate exchange */ 3962 case CTIO_TIMEOUT: 3963 /* They are OK */ 3964 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3965 "qla_target(%d): CTIO with " 3966 "status %#x received, state %x, se_cmd %p, " 3967 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3968 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3969 status, cmd->state, se_cmd); 3970 break; 3971 3972 case CTIO_PORT_LOGGED_OUT: 3973 case CTIO_PORT_UNAVAILABLE: 3974 { 3975 int logged_out = 3976 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3977 3978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3979 "qla_target(%d): CTIO with %s status %x " 3980 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3981 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3982 status, cmd->state, se_cmd); 3983 3984 if (logged_out && cmd->sess) { 3985 /* 3986 * Session is already logged out, but we need 3987 * to notify initiator, who's not aware of this 3988 */ 3989 cmd->sess->send_els_logo = 1; 3990 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3991 "%s %d %8phC post del sess\n", 3992 __func__, __LINE__, cmd->sess->port_name); 3993 3994 qlt_schedule_sess_for_deletion(cmd->sess); 3995 } 3996 break; 3997 } 3998 case CTIO_DIF_ERROR: { 3999 struct ctio_crc_from_fw *crc = 4000 (struct ctio_crc_from_fw *)ctio; 4001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4002 "qla_target(%d): CTIO with DIF_ERROR status %x " 4003 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4004 "expect_dif[0x%llx]\n", 4005 vha->vp_idx, status, cmd->state, se_cmd, 4006 *((u64 *)&crc->actual_dif[0]), 4007 *((u64 *)&crc->expected_dif[0])); 4008 4009 qlt_handle_dif_error(qpair, cmd, ctio); 4010 return; 4011 } 4012 default: 4013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4014 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4015 vha->vp_idx, status, cmd->state, se_cmd); 4016 break; 4017 } 4018 4019 4020 /* "cmd->aborted" means 4021 * cmd is already aborted/terminated, we don't 4022 * need to terminate again. The exchange is already 4023 * cleaned up/freed at FW level. Just cleanup at driver 4024 * level. 4025 */ 4026 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4027 (!cmd->aborted)) { 4028 cmd->trc_flags |= TRC_CTIO_ERR; 4029 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4030 return; 4031 } 4032 } 4033 4034 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4035 cmd->trc_flags |= TRC_CTIO_DONE; 4036 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4037 cmd->state = QLA_TGT_STATE_DATA_IN; 4038 4039 if (status == CTIO_SUCCESS) 4040 cmd->write_data_transferred = 1; 4041 4042 ha->tgt.tgt_ops->handle_data(cmd); 4043 return; 4044 } else if (cmd->aborted) { 4045 cmd->trc_flags |= TRC_CTIO_ABORTED; 4046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4047 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4048 } else { 4049 cmd->trc_flags |= TRC_CTIO_STRANGE; 4050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4051 "qla_target(%d): A command in state (%d) should " 4052 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4053 } 4054 4055 if (unlikely(status != CTIO_SUCCESS) && 4056 !cmd->aborted) { 4057 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4058 dump_stack(); 4059 } 4060 4061 ha->tgt.tgt_ops->free_cmd(cmd); 4062 } 4063 4064 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4065 uint8_t task_codes) 4066 { 4067 int fcp_task_attr; 4068 4069 switch (task_codes) { 4070 case ATIO_SIMPLE_QUEUE: 4071 fcp_task_attr = TCM_SIMPLE_TAG; 4072 break; 4073 case ATIO_HEAD_OF_QUEUE: 4074 fcp_task_attr = TCM_HEAD_TAG; 4075 break; 4076 case ATIO_ORDERED_QUEUE: 4077 fcp_task_attr = TCM_ORDERED_TAG; 4078 break; 4079 case ATIO_ACA_QUEUE: 4080 fcp_task_attr = TCM_ACA_TAG; 4081 break; 4082 case ATIO_UNTAGGED: 4083 fcp_task_attr = TCM_SIMPLE_TAG; 4084 break; 4085 default: 4086 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4087 "qla_target: unknown task code %x, use ORDERED instead\n", 4088 task_codes); 4089 fcp_task_attr = TCM_ORDERED_TAG; 4090 break; 4091 } 4092 4093 return fcp_task_attr; 4094 } 4095 4096 /* 4097 * Process context for I/O path into tcm_qla2xxx code 4098 */ 4099 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4100 { 4101 scsi_qla_host_t *vha = cmd->vha; 4102 struct qla_hw_data *ha = vha->hw; 4103 struct fc_port *sess = cmd->sess; 4104 struct atio_from_isp *atio = &cmd->atio; 4105 unsigned char *cdb; 4106 unsigned long flags; 4107 uint32_t data_length; 4108 int ret, fcp_task_attr, data_dir, bidi = 0; 4109 struct qla_qpair *qpair = cmd->qpair; 4110 4111 cmd->cmd_in_wq = 0; 4112 cmd->trc_flags |= TRC_DO_WORK; 4113 4114 if (cmd->aborted) { 4115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4116 "cmd with tag %u is aborted\n", 4117 cmd->atio.u.isp24.exchange_addr); 4118 goto out_term; 4119 } 4120 4121 spin_lock_init(&cmd->cmd_lock); 4122 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4123 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4124 4125 if (atio->u.isp24.fcp_cmnd.rddata && 4126 atio->u.isp24.fcp_cmnd.wrdata) { 4127 bidi = 1; 4128 data_dir = DMA_TO_DEVICE; 4129 } else if (atio->u.isp24.fcp_cmnd.rddata) 4130 data_dir = DMA_FROM_DEVICE; 4131 else if (atio->u.isp24.fcp_cmnd.wrdata) 4132 data_dir = DMA_TO_DEVICE; 4133 else 4134 data_dir = DMA_NONE; 4135 4136 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4137 atio->u.isp24.fcp_cmnd.task_attr); 4138 data_length = get_datalen_for_atio(atio); 4139 4140 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4141 fcp_task_attr, data_dir, bidi); 4142 if (ret != 0) 4143 goto out_term; 4144 /* 4145 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4146 */ 4147 ha->tgt.tgt_ops->put_sess(sess); 4148 return; 4149 4150 out_term: 4151 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4152 /* 4153 * cmd has not sent to target yet, so pass NULL as the second 4154 * argument to qlt_send_term_exchange() and free the memory here. 4155 */ 4156 cmd->trc_flags |= TRC_DO_WORK_ERR; 4157 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4158 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4159 4160 qlt_decr_num_pend_cmds(vha); 4161 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4162 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4163 4164 ha->tgt.tgt_ops->put_sess(sess); 4165 } 4166 4167 static void qlt_do_work(struct work_struct *work) 4168 { 4169 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4170 scsi_qla_host_t *vha = cmd->vha; 4171 unsigned long flags; 4172 4173 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4174 list_del(&cmd->cmd_list); 4175 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4176 4177 __qlt_do_work(cmd); 4178 } 4179 4180 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4181 { 4182 unsigned long flags; 4183 struct qla_hw_data *ha = vha->hw; 4184 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4185 void *node; 4186 u64 key = 0; 4187 4188 ql_log(ql_log_info, vha, 0x706c, 4189 "User update Number of Active Qpairs %d\n", 4190 ha->tgt.num_act_qpairs); 4191 4192 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4193 4194 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4195 btree_remove64(&tgt->lun_qpair_map, key); 4196 4197 ha->base_qpair->lun_cnt = 0; 4198 for (key = 0; key < ha->max_qpairs; key++) 4199 if (ha->queue_pair_map[key]) 4200 ha->queue_pair_map[key]->lun_cnt = 0; 4201 4202 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4203 } 4204 4205 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4206 struct qla_tgt_cmd *cmd) 4207 { 4208 struct qla_qpair *qpair, *qp; 4209 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4210 struct qla_qpair_hint *h; 4211 4212 if (vha->flags.qpairs_available) { 4213 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4214 if (unlikely(!h)) { 4215 /* spread lun to qpair ratio evently */ 4216 int lcnt = 0, rc; 4217 struct scsi_qla_host *base_vha = 4218 pci_get_drvdata(vha->hw->pdev); 4219 4220 qpair = vha->hw->base_qpair; 4221 if (qpair->lun_cnt == 0) { 4222 qpair->lun_cnt++; 4223 h = qla_qpair_to_hint(tgt, qpair); 4224 BUG_ON(!h); 4225 rc = btree_insert64(&tgt->lun_qpair_map, 4226 cmd->unpacked_lun, h, GFP_ATOMIC); 4227 if (rc) { 4228 qpair->lun_cnt--; 4229 ql_log(ql_log_info, vha, 0xd037, 4230 "Unable to insert lun %llx into lun_qpair_map\n", 4231 cmd->unpacked_lun); 4232 } 4233 goto out; 4234 } else { 4235 lcnt = qpair->lun_cnt; 4236 } 4237 4238 h = NULL; 4239 list_for_each_entry(qp, &base_vha->qp_list, 4240 qp_list_elem) { 4241 if (qp->lun_cnt == 0) { 4242 qp->lun_cnt++; 4243 h = qla_qpair_to_hint(tgt, qp); 4244 BUG_ON(!h); 4245 rc = btree_insert64(&tgt->lun_qpair_map, 4246 cmd->unpacked_lun, h, GFP_ATOMIC); 4247 if (rc) { 4248 qp->lun_cnt--; 4249 ql_log(ql_log_info, vha, 0xd038, 4250 "Unable to insert lun %llx into lun_qpair_map\n", 4251 cmd->unpacked_lun); 4252 } 4253 qpair = qp; 4254 goto out; 4255 } else { 4256 if (qp->lun_cnt < lcnt) { 4257 lcnt = qp->lun_cnt; 4258 qpair = qp; 4259 continue; 4260 } 4261 } 4262 } 4263 BUG_ON(!qpair); 4264 qpair->lun_cnt++; 4265 h = qla_qpair_to_hint(tgt, qpair); 4266 BUG_ON(!h); 4267 rc = btree_insert64(&tgt->lun_qpair_map, 4268 cmd->unpacked_lun, h, GFP_ATOMIC); 4269 if (rc) { 4270 qpair->lun_cnt--; 4271 ql_log(ql_log_info, vha, 0xd039, 4272 "Unable to insert lun %llx into lun_qpair_map\n", 4273 cmd->unpacked_lun); 4274 } 4275 } 4276 } else { 4277 h = &tgt->qphints[0]; 4278 } 4279 out: 4280 cmd->qpair = h->qpair; 4281 cmd->se_cmd.cpuid = h->cpuid; 4282 } 4283 4284 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4285 struct fc_port *sess, 4286 struct atio_from_isp *atio) 4287 { 4288 struct qla_tgt_cmd *cmd; 4289 4290 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4291 if (!cmd) 4292 return NULL; 4293 4294 cmd->cmd_type = TYPE_TGT_CMD; 4295 memcpy(&cmd->atio, atio, sizeof(*atio)); 4296 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4297 cmd->state = QLA_TGT_STATE_NEW; 4298 cmd->tgt = vha->vha_tgt.qla_tgt; 4299 qlt_incr_num_pend_cmds(vha); 4300 cmd->vha = vha; 4301 cmd->sess = sess; 4302 cmd->loop_id = sess->loop_id; 4303 cmd->conf_compl_supported = sess->conf_compl_supported; 4304 4305 cmd->trc_flags = 0; 4306 cmd->jiffies_at_alloc = get_jiffies_64(); 4307 4308 cmd->unpacked_lun = scsilun_to_int( 4309 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4310 qlt_assign_qpair(vha, cmd); 4311 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4312 cmd->vp_idx = vha->vp_idx; 4313 4314 return cmd; 4315 } 4316 4317 /* ha->hardware_lock supposed to be held on entry */ 4318 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4319 struct atio_from_isp *atio) 4320 { 4321 struct qla_hw_data *ha = vha->hw; 4322 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4323 struct fc_port *sess; 4324 struct qla_tgt_cmd *cmd; 4325 unsigned long flags; 4326 port_id_t id; 4327 4328 if (unlikely(tgt->tgt_stop)) { 4329 ql_dbg(ql_dbg_io, vha, 0x3061, 4330 "New command while device %p is shutting down\n", tgt); 4331 return -ENODEV; 4332 } 4333 4334 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4335 if (IS_SW_RESV_ADDR(id)) 4336 return -EBUSY; 4337 4338 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4339 if (unlikely(!sess)) 4340 return -EFAULT; 4341 4342 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4343 * session deletion, but it's still in sess_del_work wq */ 4344 if (sess->deleted) { 4345 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4346 "New command while old session %p is being deleted\n", 4347 sess); 4348 return -EFAULT; 4349 } 4350 4351 /* 4352 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4353 */ 4354 if (!kref_get_unless_zero(&sess->sess_kref)) { 4355 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4356 "%s: kref_get fail, %8phC oxid %x \n", 4357 __func__, sess->port_name, 4358 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4359 return -EFAULT; 4360 } 4361 4362 cmd = qlt_get_tag(vha, sess, atio); 4363 if (!cmd) { 4364 ql_dbg(ql_dbg_io, vha, 0x3062, 4365 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4366 ha->tgt.tgt_ops->put_sess(sess); 4367 return -EBUSY; 4368 } 4369 4370 cmd->cmd_in_wq = 1; 4371 cmd->trc_flags |= TRC_NEW_CMD; 4372 4373 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4374 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4375 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4376 4377 INIT_WORK(&cmd->work, qlt_do_work); 4378 if (vha->flags.qpairs_available) { 4379 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4380 } else if (ha->msix_count) { 4381 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4382 queue_work_on(smp_processor_id(), qla_tgt_wq, 4383 &cmd->work); 4384 else 4385 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4386 &cmd->work); 4387 } else { 4388 queue_work(qla_tgt_wq, &cmd->work); 4389 } 4390 4391 return 0; 4392 } 4393 4394 /* ha->hardware_lock supposed to be held on entry */ 4395 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4396 int fn, void *iocb, int flags) 4397 { 4398 struct scsi_qla_host *vha = sess->vha; 4399 struct qla_hw_data *ha = vha->hw; 4400 struct qla_tgt_mgmt_cmd *mcmd; 4401 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4402 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4403 4404 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4405 if (!mcmd) { 4406 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4407 "qla_target(%d): Allocation of management " 4408 "command failed, some commands and their data could " 4409 "leak\n", vha->vp_idx); 4410 return -ENOMEM; 4411 } 4412 memset(mcmd, 0, sizeof(*mcmd)); 4413 mcmd->sess = sess; 4414 4415 if (iocb) { 4416 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4417 sizeof(mcmd->orig_iocb.imm_ntfy)); 4418 } 4419 mcmd->tmr_func = fn; 4420 mcmd->flags = flags; 4421 mcmd->reset_count = ha->base_qpair->chip_reset; 4422 mcmd->qpair = h->qpair; 4423 mcmd->vha = vha; 4424 mcmd->se_cmd.cpuid = h->cpuid; 4425 mcmd->unpacked_lun = lun; 4426 4427 switch (fn) { 4428 case QLA_TGT_LUN_RESET: 4429 case QLA_TGT_CLEAR_TS: 4430 case QLA_TGT_ABORT_TS: 4431 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4432 fallthrough; 4433 case QLA_TGT_CLEAR_ACA: 4434 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4435 mcmd->qpair = h->qpair; 4436 mcmd->se_cmd.cpuid = h->cpuid; 4437 break; 4438 4439 case QLA_TGT_TARGET_RESET: 4440 case QLA_TGT_NEXUS_LOSS_SESS: 4441 case QLA_TGT_NEXUS_LOSS: 4442 case QLA_TGT_ABORT_ALL: 4443 default: 4444 /* no-op */ 4445 break; 4446 } 4447 4448 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4449 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4450 &mcmd->work); 4451 4452 return 0; 4453 } 4454 4455 /* ha->hardware_lock supposed to be held on entry */ 4456 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4457 { 4458 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4459 struct qla_hw_data *ha = vha->hw; 4460 struct fc_port *sess; 4461 u64 unpacked_lun; 4462 int fn; 4463 unsigned long flags; 4464 4465 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4466 4467 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4468 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4469 a->u.isp24.fcp_hdr.s_id); 4470 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4471 4472 unpacked_lun = 4473 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4474 4475 if (sess == NULL || sess->deleted) 4476 return -EFAULT; 4477 4478 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4479 } 4480 4481 /* ha->hardware_lock supposed to be held on entry */ 4482 static int __qlt_abort_task(struct scsi_qla_host *vha, 4483 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4484 { 4485 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4486 struct qla_hw_data *ha = vha->hw; 4487 struct qla_tgt_mgmt_cmd *mcmd; 4488 u64 unpacked_lun; 4489 int rc; 4490 4491 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4492 if (mcmd == NULL) { 4493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4494 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4495 vha->vp_idx, __func__); 4496 return -ENOMEM; 4497 } 4498 memset(mcmd, 0, sizeof(*mcmd)); 4499 4500 mcmd->sess = sess; 4501 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4502 sizeof(mcmd->orig_iocb.imm_ntfy)); 4503 4504 unpacked_lun = 4505 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4506 mcmd->reset_count = ha->base_qpair->chip_reset; 4507 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4508 mcmd->qpair = ha->base_qpair; 4509 4510 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4511 le16_to_cpu(iocb->u.isp2x.seq_id)); 4512 if (rc != 0) { 4513 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4514 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4515 vha->vp_idx, rc); 4516 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4517 return -EFAULT; 4518 } 4519 4520 return 0; 4521 } 4522 4523 /* ha->hardware_lock supposed to be held on entry */ 4524 static int qlt_abort_task(struct scsi_qla_host *vha, 4525 struct imm_ntfy_from_isp *iocb) 4526 { 4527 struct qla_hw_data *ha = vha->hw; 4528 struct fc_port *sess; 4529 int loop_id; 4530 unsigned long flags; 4531 4532 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4533 4534 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4535 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4536 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4537 4538 if (sess == NULL) { 4539 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4540 "qla_target(%d): task abort for unexisting " 4541 "session\n", vha->vp_idx); 4542 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4543 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4544 } 4545 4546 return __qlt_abort_task(vha, iocb, sess); 4547 } 4548 4549 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4550 { 4551 if (rc != MBS_COMMAND_COMPLETE) { 4552 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4553 "%s: se_sess %p / sess %p from" 4554 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4555 " LOGO failed: %#x\n", 4556 __func__, 4557 fcport->se_sess, 4558 fcport, 4559 fcport->port_name, fcport->loop_id, 4560 fcport->d_id.b.domain, fcport->d_id.b.area, 4561 fcport->d_id.b.al_pa, rc); 4562 } 4563 4564 fcport->logout_completed = 1; 4565 } 4566 4567 /* 4568 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4569 * 4570 * Schedules sessions with matching port_id/loop_id but different wwn for 4571 * deletion. Returns existing session with matching wwn if present. 4572 * Null otherwise. 4573 */ 4574 struct fc_port * 4575 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4576 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4577 { 4578 struct fc_port *sess = NULL, *other_sess; 4579 uint64_t other_wwn; 4580 4581 *conflict_sess = NULL; 4582 4583 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4584 4585 other_wwn = wwn_to_u64(other_sess->port_name); 4586 4587 if (wwn == other_wwn) { 4588 WARN_ON(sess); 4589 sess = other_sess; 4590 continue; 4591 } 4592 4593 /* find other sess with nport_id collision */ 4594 if (port_id.b24 == other_sess->d_id.b24) { 4595 if (loop_id != other_sess->loop_id) { 4596 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4597 "Invalidating sess %p loop_id %d wwn %llx.\n", 4598 other_sess, other_sess->loop_id, other_wwn); 4599 4600 /* 4601 * logout_on_delete is set by default, but another 4602 * session that has the same s_id/loop_id combo 4603 * might have cleared it when requested this session 4604 * deletion, so don't touch it 4605 */ 4606 qlt_schedule_sess_for_deletion(other_sess); 4607 } else { 4608 /* 4609 * Another wwn used to have our s_id/loop_id 4610 * kill the session, but don't free the loop_id 4611 */ 4612 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4613 "Invalidating sess %p loop_id %d wwn %llx.\n", 4614 other_sess, other_sess->loop_id, other_wwn); 4615 4616 other_sess->keep_nport_handle = 1; 4617 if (other_sess->disc_state != DSC_DELETED) 4618 *conflict_sess = other_sess; 4619 qlt_schedule_sess_for_deletion(other_sess); 4620 } 4621 continue; 4622 } 4623 4624 /* find other sess with nport handle collision */ 4625 if ((loop_id == other_sess->loop_id) && 4626 (loop_id != FC_NO_LOOP_ID)) { 4627 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4628 "Invalidating sess %p loop_id %d wwn %llx.\n", 4629 other_sess, other_sess->loop_id, other_wwn); 4630 4631 /* Same loop_id but different s_id 4632 * Ok to kill and logout */ 4633 qlt_schedule_sess_for_deletion(other_sess); 4634 } 4635 } 4636 4637 return sess; 4638 } 4639 4640 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4641 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4642 { 4643 struct qla_tgt_sess_op *op; 4644 struct qla_tgt_cmd *cmd; 4645 uint32_t key; 4646 int count = 0; 4647 unsigned long flags; 4648 4649 key = (((u32)s_id->b.domain << 16) | 4650 ((u32)s_id->b.area << 8) | 4651 ((u32)s_id->b.al_pa)); 4652 4653 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4654 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4655 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4656 4657 if (op_key == key) { 4658 op->aborted = true; 4659 count++; 4660 } 4661 } 4662 4663 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4664 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4665 4666 if (op_key == key) { 4667 op->aborted = true; 4668 count++; 4669 } 4670 } 4671 4672 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4673 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4674 4675 if (cmd_key == key) { 4676 cmd->aborted = 1; 4677 count++; 4678 } 4679 } 4680 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4681 4682 return count; 4683 } 4684 4685 static int qlt_handle_login(struct scsi_qla_host *vha, 4686 struct imm_ntfy_from_isp *iocb) 4687 { 4688 struct fc_port *sess = NULL, *conflict_sess = NULL; 4689 uint64_t wwn; 4690 port_id_t port_id; 4691 uint16_t loop_id, wd3_lo; 4692 int res = 0; 4693 struct qlt_plogi_ack_t *pla; 4694 unsigned long flags; 4695 4696 lockdep_assert_held(&vha->hw->hardware_lock); 4697 4698 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4699 4700 port_id.b.domain = iocb->u.isp24.port_id[2]; 4701 port_id.b.area = iocb->u.isp24.port_id[1]; 4702 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4703 port_id.b.rsvd_1 = 0; 4704 4705 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4706 4707 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4708 abort_cmds_for_s_id(vha, &port_id); 4709 4710 if (wwn) { 4711 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4712 sess = qlt_find_sess_invalidate_other(vha, wwn, 4713 port_id, loop_id, &conflict_sess); 4714 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4715 } else { 4716 ql_dbg(ql_dbg_disc, vha, 0xffff, 4717 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4718 __func__, __LINE__, loop_id, port_id.b24); 4719 qlt_send_term_imm_notif(vha, iocb, 1); 4720 goto out; 4721 } 4722 4723 if (IS_SW_RESV_ADDR(port_id)) { 4724 res = 1; 4725 goto out; 4726 } 4727 4728 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4729 if (!pla) { 4730 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4731 "%s %d %8phC Term INOT due to mem alloc fail", 4732 __func__, __LINE__, 4733 iocb->u.isp24.port_name); 4734 qlt_send_term_imm_notif(vha, iocb, 1); 4735 goto out; 4736 } 4737 4738 if (conflict_sess) { 4739 conflict_sess->login_gen++; 4740 qlt_plogi_ack_link(vha, pla, conflict_sess, 4741 QLT_PLOGI_LINK_CONFLICT); 4742 } 4743 4744 if (!sess) { 4745 pla->ref_count++; 4746 ql_dbg(ql_dbg_disc, vha, 0xffff, 4747 "%s %d %8phC post new sess\n", 4748 __func__, __LINE__, iocb->u.isp24.port_name); 4749 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4750 qla24xx_post_newsess_work(vha, &port_id, 4751 iocb->u.isp24.port_name, 4752 iocb->u.isp24.u.plogi.node_name, 4753 pla, 0); 4754 else 4755 qla24xx_post_newsess_work(vha, &port_id, 4756 iocb->u.isp24.port_name, NULL, 4757 pla, 0); 4758 4759 goto out; 4760 } 4761 4762 if (sess->disc_state == DSC_UPD_FCPORT) { 4763 u16 sec; 4764 4765 /* 4766 * Remote port registration is still going on from 4767 * previous login. Allow it to finish before we 4768 * accept the new login. 4769 */ 4770 sess->next_disc_state = DSC_DELETE_PEND; 4771 sec = jiffies_to_msecs(jiffies - 4772 sess->jiffies_at_registration) / 1000; 4773 if (sess->sec_since_registration < sec && sec && 4774 !(sec % 5)) { 4775 sess->sec_since_registration = sec; 4776 ql_dbg(ql_dbg_disc, vha, 0xffff, 4777 "%s %8phC - Slow Rport registration (%d Sec)\n", 4778 __func__, sess->port_name, sec); 4779 } 4780 4781 if (!conflict_sess) { 4782 list_del(&pla->list); 4783 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4784 } 4785 4786 qlt_send_term_imm_notif(vha, iocb, 1); 4787 goto out; 4788 } 4789 4790 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4791 sess->d_id = port_id; 4792 sess->login_gen++; 4793 4794 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4795 sess->fw_login_state = DSC_LS_PRLI_PEND; 4796 sess->local = 0; 4797 sess->loop_id = loop_id; 4798 sess->d_id = port_id; 4799 sess->fw_login_state = DSC_LS_PRLI_PEND; 4800 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4801 4802 if (wd3_lo & BIT_7) 4803 sess->conf_compl_supported = 1; 4804 4805 if ((wd3_lo & BIT_4) == 0) 4806 sess->port_type = FCT_INITIATOR; 4807 else 4808 sess->port_type = FCT_TARGET; 4809 4810 } else 4811 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4812 4813 4814 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4815 "%s %d %8phC DS %d\n", 4816 __func__, __LINE__, sess->port_name, sess->disc_state); 4817 4818 switch (sess->disc_state) { 4819 case DSC_DELETED: 4820 case DSC_LOGIN_PEND: 4821 qlt_plogi_ack_unref(vha, pla); 4822 break; 4823 4824 default: 4825 /* 4826 * Under normal circumstances we want to release nport handle 4827 * during LOGO process to avoid nport handle leaks inside FW. 4828 * The exception is when LOGO is done while another PLOGI with 4829 * the same nport handle is waiting as might be the case here. 4830 * Note: there is always a possibily of a race where session 4831 * deletion has already started for other reasons (e.g. ACL 4832 * removal) and now PLOGI arrives: 4833 * 1. if PLOGI arrived in FW after nport handle has been freed, 4834 * FW must have assigned this PLOGI a new/same handle and we 4835 * can proceed ACK'ing it as usual when session deletion 4836 * completes. 4837 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4838 * bit reached it, the handle has now been released. We'll 4839 * get an error when we ACK this PLOGI. Nothing will be sent 4840 * back to initiator. Initiator should eventually retry 4841 * PLOGI and situation will correct itself. 4842 */ 4843 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4844 (sess->d_id.b24 == port_id.b24)); 4845 4846 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4847 "%s %d %8phC post del sess\n", 4848 __func__, __LINE__, sess->port_name); 4849 4850 4851 qlt_schedule_sess_for_deletion(sess); 4852 break; 4853 } 4854 out: 4855 return res; 4856 } 4857 4858 /* 4859 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4860 */ 4861 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4862 struct imm_ntfy_from_isp *iocb) 4863 { 4864 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4865 struct qla_hw_data *ha = vha->hw; 4866 struct fc_port *sess = NULL, *conflict_sess = NULL; 4867 uint64_t wwn; 4868 port_id_t port_id; 4869 uint16_t loop_id; 4870 uint16_t wd3_lo; 4871 int res = 0; 4872 unsigned long flags; 4873 4874 lockdep_assert_held(&ha->hardware_lock); 4875 4876 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4877 4878 port_id.b.domain = iocb->u.isp24.port_id[2]; 4879 port_id.b.area = iocb->u.isp24.port_id[1]; 4880 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4881 port_id.b.rsvd_1 = 0; 4882 4883 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4884 4885 ql_dbg(ql_dbg_disc, vha, 0xf026, 4886 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4887 vha->vp_idx, iocb->u.isp24.port_id[2], 4888 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4889 iocb->u.isp24.status_subcode, loop_id, 4890 iocb->u.isp24.port_name); 4891 4892 /* res = 1 means ack at the end of thread 4893 * res = 0 means ack async/later. 4894 */ 4895 switch (iocb->u.isp24.status_subcode) { 4896 case ELS_PLOGI: 4897 res = qlt_handle_login(vha, iocb); 4898 break; 4899 4900 case ELS_PRLI: 4901 if (N2N_TOPO(ha)) { 4902 sess = qla2x00_find_fcport_by_wwpn(vha, 4903 iocb->u.isp24.port_name, 1); 4904 4905 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4906 ql_dbg(ql_dbg_disc, vha, 0xffff, 4907 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4908 __func__, __LINE__, 4909 iocb->u.isp24.port_name); 4910 qlt_send_term_imm_notif(vha, iocb, 1); 4911 break; 4912 } 4913 4914 res = qlt_handle_login(vha, iocb); 4915 break; 4916 } 4917 4918 if (IS_SW_RESV_ADDR(port_id)) { 4919 res = 1; 4920 break; 4921 } 4922 4923 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4924 4925 if (wwn) { 4926 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4927 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4928 loop_id, &conflict_sess); 4929 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4930 } 4931 4932 if (conflict_sess) { 4933 switch (conflict_sess->disc_state) { 4934 case DSC_DELETED: 4935 case DSC_DELETE_PEND: 4936 break; 4937 default: 4938 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4939 "PRLI with conflicting sess %p port %8phC\n", 4940 conflict_sess, conflict_sess->port_name); 4941 conflict_sess->fw_login_state = 4942 DSC_LS_PORT_UNAVAIL; 4943 qlt_send_term_imm_notif(vha, iocb, 1); 4944 res = 0; 4945 break; 4946 } 4947 } 4948 4949 if (sess != NULL) { 4950 bool delete = false; 4951 int sec; 4952 4953 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4954 switch (sess->fw_login_state) { 4955 case DSC_LS_PLOGI_PEND: 4956 case DSC_LS_PLOGI_COMP: 4957 case DSC_LS_PRLI_COMP: 4958 break; 4959 default: 4960 delete = true; 4961 break; 4962 } 4963 4964 switch (sess->disc_state) { 4965 case DSC_UPD_FCPORT: 4966 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4967 flags); 4968 4969 sec = jiffies_to_msecs(jiffies - 4970 sess->jiffies_at_registration)/1000; 4971 if (sess->sec_since_registration < sec && sec && 4972 !(sec % 5)) { 4973 sess->sec_since_registration = sec; 4974 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4975 "%s %8phC : Slow Rport registration(%d Sec)\n", 4976 __func__, sess->port_name, sec); 4977 } 4978 qlt_send_term_imm_notif(vha, iocb, 1); 4979 return 0; 4980 4981 case DSC_LOGIN_PEND: 4982 case DSC_GPDB: 4983 case DSC_LOGIN_COMPLETE: 4984 case DSC_ADISC: 4985 delete = false; 4986 break; 4987 default: 4988 break; 4989 } 4990 4991 if (delete) { 4992 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4993 flags); 4994 /* 4995 * Impatient initiator sent PRLI before last 4996 * PLOGI could finish. Will force him to re-try, 4997 * while last one finishes. 4998 */ 4999 ql_log(ql_log_warn, sess->vha, 0xf095, 5000 "sess %p PRLI received, before plogi ack.\n", 5001 sess); 5002 qlt_send_term_imm_notif(vha, iocb, 1); 5003 res = 0; 5004 break; 5005 } 5006 5007 /* 5008 * This shouldn't happen under normal circumstances, 5009 * since we have deleted the old session during PLOGI 5010 */ 5011 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5012 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5013 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5014 5015 sess->local = 0; 5016 sess->loop_id = loop_id; 5017 sess->d_id = port_id; 5018 sess->fw_login_state = DSC_LS_PRLI_PEND; 5019 5020 if (wd3_lo & BIT_7) 5021 sess->conf_compl_supported = 1; 5022 5023 if ((wd3_lo & BIT_4) == 0) 5024 sess->port_type = FCT_INITIATOR; 5025 else 5026 sess->port_type = FCT_TARGET; 5027 5028 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5029 } 5030 res = 1; /* send notify ack */ 5031 5032 /* Make session global (not used in fabric mode) */ 5033 if (ha->current_topology != ISP_CFG_F) { 5034 if (sess) { 5035 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5036 "%s %d %8phC post nack\n", 5037 __func__, __LINE__, sess->port_name); 5038 qla24xx_post_nack_work(vha, sess, iocb, 5039 SRB_NACK_PRLI); 5040 res = 0; 5041 } else { 5042 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5043 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5044 qla2xxx_wake_dpc(vha); 5045 } 5046 } else { 5047 if (sess) { 5048 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5049 "%s %d %8phC post nack\n", 5050 __func__, __LINE__, sess->port_name); 5051 qla24xx_post_nack_work(vha, sess, iocb, 5052 SRB_NACK_PRLI); 5053 res = 0; 5054 } 5055 } 5056 break; 5057 5058 case ELS_TPRLO: 5059 if (le16_to_cpu(iocb->u.isp24.flags) & 5060 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5061 loop_id = 0xFFFF; 5062 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5063 res = 1; 5064 break; 5065 } 5066 fallthrough; 5067 case ELS_LOGO: 5068 case ELS_PRLO: 5069 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5070 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5071 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5072 5073 if (sess) { 5074 sess->login_gen++; 5075 sess->fw_login_state = DSC_LS_LOGO_PEND; 5076 sess->logo_ack_needed = 1; 5077 memcpy(sess->iocb, iocb, IOCB_SIZE); 5078 } 5079 5080 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5081 5082 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5083 "%s: logo %llx res %d sess %p ", 5084 __func__, wwn, res, sess); 5085 if (res == 0) { 5086 /* 5087 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5088 * for LOGO_ACK & sess delete 5089 */ 5090 BUG_ON(!sess); 5091 res = 0; 5092 } else { 5093 /* cmd did not go to upper layer. */ 5094 if (sess) { 5095 qlt_schedule_sess_for_deletion(sess); 5096 res = 0; 5097 } 5098 /* else logo will be ack */ 5099 } 5100 break; 5101 case ELS_PDISC: 5102 case ELS_ADISC: 5103 { 5104 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5105 5106 if (tgt->link_reinit_iocb_pending) { 5107 qlt_send_notify_ack(ha->base_qpair, 5108 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5109 tgt->link_reinit_iocb_pending = 0; 5110 } 5111 5112 sess = qla2x00_find_fcport_by_wwpn(vha, 5113 iocb->u.isp24.port_name, 1); 5114 if (sess) { 5115 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5116 "sess %p lid %d|%d DS %d LS %d\n", 5117 sess, sess->loop_id, loop_id, 5118 sess->disc_state, sess->fw_login_state); 5119 } 5120 5121 res = 1; /* send notify ack */ 5122 break; 5123 } 5124 5125 case ELS_FLOGI: /* should never happen */ 5126 default: 5127 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5128 "qla_target(%d): Unsupported ELS command %x " 5129 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5130 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5131 break; 5132 } 5133 5134 ql_dbg(ql_dbg_disc, vha, 0xf026, 5135 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5136 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5137 5138 return res; 5139 } 5140 5141 /* 5142 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5143 */ 5144 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5145 struct imm_ntfy_from_isp *iocb) 5146 { 5147 struct qla_hw_data *ha = vha->hw; 5148 uint32_t add_flags = 0; 5149 int send_notify_ack = 1; 5150 uint16_t status; 5151 5152 lockdep_assert_held(&ha->hardware_lock); 5153 5154 status = le16_to_cpu(iocb->u.isp2x.status); 5155 switch (status) { 5156 case IMM_NTFY_LIP_RESET: 5157 { 5158 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5159 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5160 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5161 iocb->u.isp24.status_subcode); 5162 5163 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5164 send_notify_ack = 0; 5165 break; 5166 } 5167 5168 case IMM_NTFY_LIP_LINK_REINIT: 5169 { 5170 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5171 5172 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5173 "qla_target(%d): LINK REINIT (loop %#x, " 5174 "subcode %x)\n", vha->vp_idx, 5175 le16_to_cpu(iocb->u.isp24.nport_handle), 5176 iocb->u.isp24.status_subcode); 5177 if (tgt->link_reinit_iocb_pending) { 5178 qlt_send_notify_ack(ha->base_qpair, 5179 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5180 } 5181 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5182 tgt->link_reinit_iocb_pending = 1; 5183 /* 5184 * QLogic requires to wait after LINK REINIT for possible 5185 * PDISC or ADISC ELS commands 5186 */ 5187 send_notify_ack = 0; 5188 break; 5189 } 5190 5191 case IMM_NTFY_PORT_LOGOUT: 5192 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5193 "qla_target(%d): Port logout (loop " 5194 "%#x, subcode %x)\n", vha->vp_idx, 5195 le16_to_cpu(iocb->u.isp24.nport_handle), 5196 iocb->u.isp24.status_subcode); 5197 5198 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5199 send_notify_ack = 0; 5200 /* The sessions will be cleared in the callback, if needed */ 5201 break; 5202 5203 case IMM_NTFY_GLBL_TPRLO: 5204 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5205 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5206 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5207 send_notify_ack = 0; 5208 /* The sessions will be cleared in the callback, if needed */ 5209 break; 5210 5211 case IMM_NTFY_PORT_CONFIG: 5212 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5213 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5214 status); 5215 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5216 send_notify_ack = 0; 5217 /* The sessions will be cleared in the callback, if needed */ 5218 break; 5219 5220 case IMM_NTFY_GLBL_LOGO: 5221 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5222 "qla_target(%d): Link failure detected\n", 5223 vha->vp_idx); 5224 /* I_T nexus loss */ 5225 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5226 send_notify_ack = 0; 5227 break; 5228 5229 case IMM_NTFY_IOCB_OVERFLOW: 5230 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5231 "qla_target(%d): Cannot provide requested " 5232 "capability (IOCB overflowed the immediate notify " 5233 "resource count)\n", vha->vp_idx); 5234 break; 5235 5236 case IMM_NTFY_ABORT_TASK: 5237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5238 "qla_target(%d): Abort Task (S %08x I %#x -> " 5239 "L %#x)\n", vha->vp_idx, 5240 le16_to_cpu(iocb->u.isp2x.seq_id), 5241 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5242 le16_to_cpu(iocb->u.isp2x.lun)); 5243 if (qlt_abort_task(vha, iocb) == 0) 5244 send_notify_ack = 0; 5245 break; 5246 5247 case IMM_NTFY_RESOURCE: 5248 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5249 "qla_target(%d): Out of resources, host %ld\n", 5250 vha->vp_idx, vha->host_no); 5251 break; 5252 5253 case IMM_NTFY_MSG_RX: 5254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5255 "qla_target(%d): Immediate notify task %x\n", 5256 vha->vp_idx, iocb->u.isp2x.task_flags); 5257 break; 5258 5259 case IMM_NTFY_ELS: 5260 if (qlt_24xx_handle_els(vha, iocb) == 0) 5261 send_notify_ack = 0; 5262 break; 5263 default: 5264 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5265 "qla_target(%d): Received unknown immediate " 5266 "notify status %x\n", vha->vp_idx, status); 5267 break; 5268 } 5269 5270 if (send_notify_ack) 5271 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5272 0, 0); 5273 } 5274 5275 /* 5276 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5277 * This function sends busy to ISP 2xxx or 24xx. 5278 */ 5279 static int __qlt_send_busy(struct qla_qpair *qpair, 5280 struct atio_from_isp *atio, uint16_t status) 5281 { 5282 struct scsi_qla_host *vha = qpair->vha; 5283 struct ctio7_to_24xx *ctio24; 5284 struct qla_hw_data *ha = vha->hw; 5285 request_t *pkt; 5286 struct fc_port *sess = NULL; 5287 unsigned long flags; 5288 u16 temp; 5289 port_id_t id; 5290 5291 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5292 5293 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5294 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5295 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5296 if (!sess) { 5297 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5298 return 0; 5299 } 5300 /* Sending marker isn't necessary, since we called from ISR */ 5301 5302 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5303 if (!pkt) { 5304 ql_dbg(ql_dbg_io, vha, 0x3063, 5305 "qla_target(%d): %s failed: unable to allocate " 5306 "request packet", vha->vp_idx, __func__); 5307 return -ENOMEM; 5308 } 5309 5310 qpair->tgt_counters.num_q_full_sent++; 5311 pkt->entry_count = 1; 5312 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5313 5314 ctio24 = (struct ctio7_to_24xx *)pkt; 5315 ctio24->entry_type = CTIO_TYPE7; 5316 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5317 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5318 ctio24->vp_index = vha->vp_idx; 5319 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5320 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5321 temp = (atio->u.isp24.attr << 9) | 5322 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5323 CTIO7_FLAGS_DONT_RET_CTIO; 5324 ctio24->u.status1.flags = cpu_to_le16(temp); 5325 /* 5326 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5327 * if the explicit conformation is used. 5328 */ 5329 ctio24->u.status1.ox_id = 5330 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5331 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5332 5333 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5334 5335 if (ctio24->u.status1.residual != 0) 5336 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5337 5338 /* Memory Barrier */ 5339 wmb(); 5340 if (qpair->reqq_start_iocbs) 5341 qpair->reqq_start_iocbs(qpair); 5342 else 5343 qla2x00_start_iocbs(vha, qpair->req); 5344 return 0; 5345 } 5346 5347 /* 5348 * This routine is used to allocate a command for either a QFull condition 5349 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5350 * out previously. 5351 */ 5352 static void 5353 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5354 struct atio_from_isp *atio, uint16_t status, int qfull) 5355 { 5356 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5357 struct qla_hw_data *ha = vha->hw; 5358 struct fc_port *sess; 5359 struct qla_tgt_cmd *cmd; 5360 unsigned long flags; 5361 5362 if (unlikely(tgt->tgt_stop)) { 5363 ql_dbg(ql_dbg_io, vha, 0x300a, 5364 "New command while device %p is shutting down\n", tgt); 5365 return; 5366 } 5367 5368 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5369 vha->hw->tgt.num_qfull_cmds_dropped++; 5370 if (vha->hw->tgt.num_qfull_cmds_dropped > 5371 vha->qla_stats.stat_max_qfull_cmds_dropped) 5372 vha->qla_stats.stat_max_qfull_cmds_dropped = 5373 vha->hw->tgt.num_qfull_cmds_dropped; 5374 5375 ql_dbg(ql_dbg_io, vha, 0x3068, 5376 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5377 vha->vp_idx, __func__, 5378 vha->hw->tgt.num_qfull_cmds_dropped); 5379 5380 qlt_chk_exch_leak_thresh_hold(vha); 5381 return; 5382 } 5383 5384 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5385 (vha, atio->u.isp24.fcp_hdr.s_id); 5386 if (!sess) 5387 return; 5388 5389 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5390 if (!cmd) { 5391 ql_dbg(ql_dbg_io, vha, 0x3009, 5392 "qla_target(%d): %s: Allocation of cmd failed\n", 5393 vha->vp_idx, __func__); 5394 5395 vha->hw->tgt.num_qfull_cmds_dropped++; 5396 if (vha->hw->tgt.num_qfull_cmds_dropped > 5397 vha->qla_stats.stat_max_qfull_cmds_dropped) 5398 vha->qla_stats.stat_max_qfull_cmds_dropped = 5399 vha->hw->tgt.num_qfull_cmds_dropped; 5400 5401 qlt_chk_exch_leak_thresh_hold(vha); 5402 return; 5403 } 5404 5405 qlt_incr_num_pend_cmds(vha); 5406 INIT_LIST_HEAD(&cmd->cmd_list); 5407 memcpy(&cmd->atio, atio, sizeof(*atio)); 5408 5409 cmd->tgt = vha->vha_tgt.qla_tgt; 5410 cmd->vha = vha; 5411 cmd->reset_count = ha->base_qpair->chip_reset; 5412 cmd->q_full = 1; 5413 cmd->qpair = ha->base_qpair; 5414 5415 if (qfull) { 5416 cmd->q_full = 1; 5417 /* NOTE: borrowing the state field to carry the status */ 5418 cmd->state = status; 5419 } else 5420 cmd->term_exchg = 1; 5421 5422 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5423 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5424 5425 vha->hw->tgt.num_qfull_cmds_alloc++; 5426 if (vha->hw->tgt.num_qfull_cmds_alloc > 5427 vha->qla_stats.stat_max_qfull_cmds_alloc) 5428 vha->qla_stats.stat_max_qfull_cmds_alloc = 5429 vha->hw->tgt.num_qfull_cmds_alloc; 5430 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5431 } 5432 5433 int 5434 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5435 { 5436 struct scsi_qla_host *vha = qpair->vha; 5437 struct qla_hw_data *ha = vha->hw; 5438 unsigned long flags; 5439 struct qla_tgt_cmd *cmd, *tcmd; 5440 struct list_head free_list, q_full_list; 5441 int rc = 0; 5442 5443 if (list_empty(&ha->tgt.q_full_list)) 5444 return 0; 5445 5446 INIT_LIST_HEAD(&free_list); 5447 INIT_LIST_HEAD(&q_full_list); 5448 5449 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5450 if (list_empty(&ha->tgt.q_full_list)) { 5451 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5452 return 0; 5453 } 5454 5455 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5456 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5457 5458 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5459 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5460 if (cmd->q_full) 5461 /* cmd->state is a borrowed field to hold status */ 5462 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5463 else if (cmd->term_exchg) 5464 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5465 5466 if (rc == -ENOMEM) 5467 break; 5468 5469 if (cmd->q_full) 5470 ql_dbg(ql_dbg_io, vha, 0x3006, 5471 "%s: busy sent for ox_id[%04x]\n", __func__, 5472 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5473 else if (cmd->term_exchg) 5474 ql_dbg(ql_dbg_io, vha, 0x3007, 5475 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5476 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5477 else 5478 ql_dbg(ql_dbg_io, vha, 0x3008, 5479 "%s: Unexpected cmd in QFull list %p\n", __func__, 5480 cmd); 5481 5482 list_del(&cmd->cmd_list); 5483 list_add_tail(&cmd->cmd_list, &free_list); 5484 5485 /* piggy back on hardware_lock for protection */ 5486 vha->hw->tgt.num_qfull_cmds_alloc--; 5487 } 5488 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5489 5490 cmd = NULL; 5491 5492 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5493 list_del(&cmd->cmd_list); 5494 /* This cmd was never sent to TCM. There is no need 5495 * to schedule free or call free_cmd 5496 */ 5497 qlt_free_cmd(cmd); 5498 } 5499 5500 if (!list_empty(&q_full_list)) { 5501 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5502 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5503 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5504 } 5505 5506 return rc; 5507 } 5508 5509 static void 5510 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5511 uint16_t status) 5512 { 5513 int rc = 0; 5514 struct scsi_qla_host *vha = qpair->vha; 5515 5516 rc = __qlt_send_busy(qpair, atio, status); 5517 if (rc == -ENOMEM) 5518 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5519 } 5520 5521 static int 5522 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5523 struct atio_from_isp *atio, uint8_t ha_locked) 5524 { 5525 struct qla_hw_data *ha = vha->hw; 5526 unsigned long flags; 5527 5528 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5529 return 0; 5530 5531 if (!ha_locked) 5532 spin_lock_irqsave(&ha->hardware_lock, flags); 5533 qlt_send_busy(qpair, atio, qla_sam_status); 5534 if (!ha_locked) 5535 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5536 5537 return 1; 5538 } 5539 5540 /* ha->hardware_lock supposed to be held on entry */ 5541 /* called via callback from qla2xxx */ 5542 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5543 struct atio_from_isp *atio, uint8_t ha_locked) 5544 { 5545 struct qla_hw_data *ha = vha->hw; 5546 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5547 int rc; 5548 unsigned long flags = 0; 5549 5550 if (unlikely(tgt == NULL)) { 5551 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5552 "ATIO pkt, but no tgt (ha %p)", ha); 5553 return; 5554 } 5555 /* 5556 * In tgt_stop mode we also should allow all requests to pass. 5557 * Otherwise, some commands can stuck. 5558 */ 5559 5560 tgt->atio_irq_cmd_count++; 5561 5562 switch (atio->u.raw.entry_type) { 5563 case ATIO_TYPE7: 5564 if (unlikely(atio->u.isp24.exchange_addr == 5565 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5566 ql_dbg(ql_dbg_io, vha, 0x3065, 5567 "qla_target(%d): ATIO_TYPE7 " 5568 "received with UNKNOWN exchange address, " 5569 "sending QUEUE_FULL\n", vha->vp_idx); 5570 if (!ha_locked) 5571 spin_lock_irqsave(&ha->hardware_lock, flags); 5572 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5573 if (!ha_locked) 5574 spin_unlock_irqrestore(&ha->hardware_lock, 5575 flags); 5576 break; 5577 } 5578 5579 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5580 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5581 atio, ha_locked); 5582 if (rc != 0) { 5583 tgt->atio_irq_cmd_count--; 5584 return; 5585 } 5586 rc = qlt_handle_cmd_for_atio(vha, atio); 5587 } else { 5588 rc = qlt_handle_task_mgmt(vha, atio); 5589 } 5590 if (unlikely(rc != 0)) { 5591 if (!ha_locked) 5592 spin_lock_irqsave(&ha->hardware_lock, flags); 5593 switch (rc) { 5594 case -ENODEV: 5595 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5596 "qla_target: Unable to send command to target\n"); 5597 break; 5598 case -EBADF: 5599 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5600 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5601 qlt_send_term_exchange(ha->base_qpair, NULL, 5602 atio, 1, 0); 5603 break; 5604 case -EBUSY: 5605 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5606 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5607 vha->vp_idx); 5608 qlt_send_busy(ha->base_qpair, atio, 5609 tc_sam_status); 5610 break; 5611 default: 5612 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5613 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5614 vha->vp_idx); 5615 qlt_send_busy(ha->base_qpair, atio, 5616 qla_sam_status); 5617 break; 5618 } 5619 if (!ha_locked) 5620 spin_unlock_irqrestore(&ha->hardware_lock, 5621 flags); 5622 } 5623 break; 5624 5625 case IMMED_NOTIFY_TYPE: 5626 { 5627 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5628 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5629 "qla_target(%d): Received ATIO packet %x " 5630 "with error status %x\n", vha->vp_idx, 5631 atio->u.raw.entry_type, 5632 atio->u.isp2x.entry_status); 5633 break; 5634 } 5635 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5636 5637 if (!ha_locked) 5638 spin_lock_irqsave(&ha->hardware_lock, flags); 5639 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5640 if (!ha_locked) 5641 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5642 break; 5643 } 5644 5645 default: 5646 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5647 "qla_target(%d): Received unknown ATIO atio " 5648 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5649 break; 5650 } 5651 5652 tgt->atio_irq_cmd_count--; 5653 } 5654 5655 /* 5656 * qpair lock is assume to be held 5657 * rc = 0 : send terminate & abts respond 5658 * rc != 0: do not send term & abts respond 5659 */ 5660 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5661 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5662 { 5663 struct qla_hw_data *ha = vha->hw; 5664 int rc = 0; 5665 5666 /* 5667 * Detect unresolved exchange. If the same ABTS is unable 5668 * to terminate an existing command and the same ABTS loops 5669 * between FW & Driver, then force FW dump. Under 1 jiff, 5670 * we should see multiple loops. 5671 */ 5672 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5673 qpair->retry_term_jiff == jiffies) { 5674 /* found existing exchange */ 5675 qpair->retry_term_cnt++; 5676 if (qpair->retry_term_cnt >= 5) { 5677 rc = -EIO; 5678 qpair->retry_term_cnt = 0; 5679 ql_log(ql_log_warn, vha, 0xffff, 5680 "Unable to send ABTS Respond. Dumping firmware.\n"); 5681 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5682 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5683 5684 if (qpair == ha->base_qpair) 5685 ha->isp_ops->fw_dump(vha); 5686 else 5687 qla2xxx_dump_fw(vha); 5688 5689 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5690 qla2xxx_wake_dpc(vha); 5691 } 5692 } else if (qpair->retry_term_jiff != jiffies) { 5693 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5694 qpair->retry_term_cnt = 0; 5695 qpair->retry_term_jiff = jiffies; 5696 } 5697 5698 return rc; 5699 } 5700 5701 5702 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5703 struct rsp_que *rsp, response_t *pkt) 5704 { 5705 struct abts_resp_from_24xx_fw *entry = 5706 (struct abts_resp_from_24xx_fw *)pkt; 5707 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5708 struct qla_tgt_mgmt_cmd *mcmd; 5709 struct qla_hw_data *ha = vha->hw; 5710 5711 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5712 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5713 ql_dbg(ql_dbg_async, vha, 0xe064, 5714 "qla_target(%d): ABTS Comp without mcmd\n", 5715 vha->vp_idx); 5716 return; 5717 } 5718 5719 if (mcmd) 5720 vha = mcmd->vha; 5721 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5722 5723 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5724 "ABTS_RESP_24XX: compl_status %x\n", 5725 entry->compl_status); 5726 5727 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5728 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5729 le32_to_cpu(entry->error_subcode2) == 0) { 5730 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5731 ha->tgt.tgt_ops->free_mcmd(mcmd); 5732 return; 5733 } 5734 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5735 pkt, mcmd); 5736 } else { 5737 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5738 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5739 vha->vp_idx, entry->compl_status, 5740 entry->error_subcode1, 5741 entry->error_subcode2); 5742 ha->tgt.tgt_ops->free_mcmd(mcmd); 5743 } 5744 } else if (mcmd) { 5745 ha->tgt.tgt_ops->free_mcmd(mcmd); 5746 } 5747 } 5748 5749 /* ha->hardware_lock supposed to be held on entry */ 5750 /* called via callback from qla2xxx */ 5751 static void qlt_response_pkt(struct scsi_qla_host *vha, 5752 struct rsp_que *rsp, response_t *pkt) 5753 { 5754 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5755 5756 if (unlikely(tgt == NULL)) { 5757 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5758 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5759 vha->vp_idx, pkt->entry_type, vha->hw); 5760 return; 5761 } 5762 5763 /* 5764 * In tgt_stop mode we also should allow all requests to pass. 5765 * Otherwise, some commands can stuck. 5766 */ 5767 5768 switch (pkt->entry_type) { 5769 case CTIO_CRC2: 5770 case CTIO_TYPE7: 5771 { 5772 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5773 5774 qlt_do_ctio_completion(vha, rsp, entry->handle, 5775 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5776 entry); 5777 break; 5778 } 5779 5780 case ACCEPT_TGT_IO_TYPE: 5781 { 5782 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5783 int rc; 5784 5785 if (atio->u.isp2x.status != 5786 cpu_to_le16(ATIO_CDB_VALID)) { 5787 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5788 "qla_target(%d): ATIO with error " 5789 "status %x received\n", vha->vp_idx, 5790 le16_to_cpu(atio->u.isp2x.status)); 5791 break; 5792 } 5793 5794 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5795 if (rc != 0) 5796 return; 5797 5798 rc = qlt_handle_cmd_for_atio(vha, atio); 5799 if (unlikely(rc != 0)) { 5800 switch (rc) { 5801 case -ENODEV: 5802 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5803 "qla_target: Unable to send command to target\n"); 5804 break; 5805 case -EBADF: 5806 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5807 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5808 qlt_send_term_exchange(rsp->qpair, NULL, 5809 atio, 1, 0); 5810 break; 5811 case -EBUSY: 5812 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5813 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5814 vha->vp_idx); 5815 qlt_send_busy(rsp->qpair, atio, 5816 tc_sam_status); 5817 break; 5818 default: 5819 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5820 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5821 vha->vp_idx); 5822 qlt_send_busy(rsp->qpair, atio, 5823 qla_sam_status); 5824 break; 5825 } 5826 } 5827 } 5828 break; 5829 5830 case CONTINUE_TGT_IO_TYPE: 5831 { 5832 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5833 5834 qlt_do_ctio_completion(vha, rsp, entry->handle, 5835 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5836 entry); 5837 break; 5838 } 5839 5840 case CTIO_A64_TYPE: 5841 { 5842 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5843 5844 qlt_do_ctio_completion(vha, rsp, entry->handle, 5845 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5846 entry); 5847 break; 5848 } 5849 5850 case IMMED_NOTIFY_TYPE: 5851 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5852 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5853 break; 5854 5855 case NOTIFY_ACK_TYPE: 5856 if (tgt->notify_ack_expected > 0) { 5857 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5858 5859 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5860 "NOTIFY_ACK seq %08x status %x\n", 5861 le16_to_cpu(entry->u.isp2x.seq_id), 5862 le16_to_cpu(entry->u.isp2x.status)); 5863 tgt->notify_ack_expected--; 5864 if (entry->u.isp2x.status != 5865 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5866 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5867 "qla_target(%d): NOTIFY_ACK " 5868 "failed %x\n", vha->vp_idx, 5869 le16_to_cpu(entry->u.isp2x.status)); 5870 } 5871 } else { 5872 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5873 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5874 vha->vp_idx); 5875 } 5876 break; 5877 5878 case ABTS_RECV_24XX: 5879 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5880 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5881 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5882 break; 5883 5884 case ABTS_RESP_24XX: 5885 if (tgt->abts_resp_expected > 0) { 5886 qlt_handle_abts_completion(vha, rsp, pkt); 5887 } else { 5888 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5889 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5890 "received\n", vha->vp_idx); 5891 } 5892 break; 5893 5894 default: 5895 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5896 "qla_target(%d): Received unknown response pkt " 5897 "type %x\n", vha->vp_idx, pkt->entry_type); 5898 break; 5899 } 5900 5901 } 5902 5903 /* 5904 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5905 */ 5906 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5907 uint16_t *mailbox) 5908 { 5909 struct qla_hw_data *ha = vha->hw; 5910 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5911 int login_code; 5912 5913 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5914 return; 5915 5916 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5917 IS_QLA2100(ha)) 5918 return; 5919 /* 5920 * In tgt_stop mode we also should allow all requests to pass. 5921 * Otherwise, some commands can stuck. 5922 */ 5923 5924 5925 switch (code) { 5926 case MBA_RESET: /* Reset */ 5927 case MBA_SYSTEM_ERR: /* System Error */ 5928 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5929 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5930 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5931 "qla_target(%d): System error async event %#x " 5932 "occurred", vha->vp_idx, code); 5933 break; 5934 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5935 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5936 break; 5937 5938 case MBA_LOOP_UP: 5939 { 5940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5941 "qla_target(%d): Async LOOP_UP occurred " 5942 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5943 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5944 if (tgt->link_reinit_iocb_pending) { 5945 qlt_send_notify_ack(ha->base_qpair, 5946 &tgt->link_reinit_iocb, 5947 0, 0, 0, 0, 0, 0); 5948 tgt->link_reinit_iocb_pending = 0; 5949 } 5950 break; 5951 } 5952 5953 case MBA_LIP_OCCURRED: 5954 case MBA_LOOP_DOWN: 5955 case MBA_LIP_RESET: 5956 case MBA_RSCN_UPDATE: 5957 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5958 "qla_target(%d): Async event %#x occurred " 5959 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5960 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5961 break; 5962 5963 case MBA_REJECTED_FCP_CMD: 5964 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5965 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5966 vha->vp_idx, 5967 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5968 5969 if (mailbox[3] == 1) { 5970 /* exchange starvation. */ 5971 vha->hw->exch_starvation++; 5972 if (vha->hw->exch_starvation > 5) { 5973 ql_log(ql_log_warn, vha, 0xd03a, 5974 "Exchange starvation-. Resetting RISC\n"); 5975 5976 vha->hw->exch_starvation = 0; 5977 if (IS_P3P_TYPE(vha->hw)) 5978 set_bit(FCOE_CTX_RESET_NEEDED, 5979 &vha->dpc_flags); 5980 else 5981 set_bit(ISP_ABORT_NEEDED, 5982 &vha->dpc_flags); 5983 qla2xxx_wake_dpc(vha); 5984 } 5985 } 5986 break; 5987 5988 case MBA_PORT_UPDATE: 5989 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5990 "qla_target(%d): Port update async event %#x " 5991 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5992 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5993 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5994 5995 login_code = mailbox[2]; 5996 if (login_code == 0x4) { 5997 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5998 "Async MB 2: Got PLOGI Complete\n"); 5999 vha->hw->exch_starvation = 0; 6000 } else if (login_code == 0x7) 6001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6002 "Async MB 2: Port Logged Out\n"); 6003 break; 6004 default: 6005 break; 6006 } 6007 6008 } 6009 6010 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6011 uint16_t loop_id) 6012 { 6013 fc_port_t *fcport, *tfcp, *del; 6014 int rc; 6015 unsigned long flags; 6016 u8 newfcport = 0; 6017 6018 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6019 if (!fcport) { 6020 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6021 "qla_target(%d): Allocation of tmp FC port failed", 6022 vha->vp_idx); 6023 return NULL; 6024 } 6025 6026 fcport->loop_id = loop_id; 6027 6028 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6029 if (rc != QLA_SUCCESS) { 6030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6031 "qla_target(%d): Failed to retrieve fcport " 6032 "information -- get_port_database() returned %x " 6033 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6034 kfree(fcport); 6035 return NULL; 6036 } 6037 6038 del = NULL; 6039 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6040 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6041 6042 if (tfcp) { 6043 tfcp->d_id = fcport->d_id; 6044 tfcp->port_type = fcport->port_type; 6045 tfcp->supported_classes = fcport->supported_classes; 6046 tfcp->flags |= fcport->flags; 6047 tfcp->scan_state = QLA_FCPORT_FOUND; 6048 6049 del = fcport; 6050 fcport = tfcp; 6051 } else { 6052 if (vha->hw->current_topology == ISP_CFG_F) 6053 fcport->flags |= FCF_FABRIC_DEVICE; 6054 6055 list_add_tail(&fcport->list, &vha->vp_fcports); 6056 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6057 vha->fcport_count++; 6058 fcport->login_gen++; 6059 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6060 fcport->login_succ = 1; 6061 newfcport = 1; 6062 } 6063 6064 fcport->deleted = 0; 6065 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6066 6067 switch (vha->host->active_mode) { 6068 case MODE_INITIATOR: 6069 case MODE_DUAL: 6070 if (newfcport) { 6071 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6072 qla24xx_sched_upd_fcport(fcport); 6073 } else { 6074 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6075 "%s %d %8phC post gpsc fcp_cnt %d\n", 6076 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6077 qla24xx_post_gpsc_work(vha, fcport); 6078 } 6079 } 6080 break; 6081 6082 case MODE_TARGET: 6083 default: 6084 break; 6085 } 6086 if (del) 6087 qla2x00_free_fcport(del); 6088 6089 return fcport; 6090 } 6091 6092 /* Must be called under tgt_mutex */ 6093 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6094 be_id_t s_id) 6095 { 6096 struct fc_port *sess = NULL; 6097 fc_port_t *fcport = NULL; 6098 int rc, global_resets; 6099 uint16_t loop_id = 0; 6100 6101 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6102 /* 6103 * This is Domain Controller, so it should be 6104 * OK to drop SCSI commands from it. 6105 */ 6106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6107 "Unable to find initiator with S_ID %x:%x:%x", 6108 s_id.domain, s_id.area, s_id.al_pa); 6109 return NULL; 6110 } 6111 6112 mutex_lock(&vha->vha_tgt.tgt_mutex); 6113 6114 retry: 6115 global_resets = 6116 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6117 6118 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6119 if (rc != 0) { 6120 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6121 6122 ql_log(ql_log_info, vha, 0xf071, 6123 "qla_target(%d): Unable to find " 6124 "initiator with S_ID %x:%x:%x", 6125 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6126 6127 if (rc == -ENOENT) { 6128 qlt_port_logo_t logo; 6129 6130 logo.id = be_to_port_id(s_id); 6131 logo.cmd_count = 1; 6132 qlt_send_first_logo(vha, &logo); 6133 } 6134 6135 return NULL; 6136 } 6137 6138 fcport = qlt_get_port_database(vha, loop_id); 6139 if (!fcport) { 6140 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6141 return NULL; 6142 } 6143 6144 if (global_resets != 6145 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6147 "qla_target(%d): global reset during session discovery " 6148 "(counter was %d, new %d), retrying", vha->vp_idx, 6149 global_resets, 6150 atomic_read(&vha->vha_tgt. 6151 qla_tgt->tgt_global_resets_count)); 6152 goto retry; 6153 } 6154 6155 sess = qlt_create_sess(vha, fcport, true); 6156 6157 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6158 6159 return sess; 6160 } 6161 6162 static void qlt_abort_work(struct qla_tgt *tgt, 6163 struct qla_tgt_sess_work_param *prm) 6164 { 6165 struct scsi_qla_host *vha = tgt->vha; 6166 struct qla_hw_data *ha = vha->hw; 6167 struct fc_port *sess = NULL; 6168 unsigned long flags = 0, flags2 = 0; 6169 be_id_t s_id; 6170 int rc; 6171 6172 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6173 6174 if (tgt->tgt_stop) 6175 goto out_term2; 6176 6177 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6178 6179 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6180 if (!sess) { 6181 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6182 6183 sess = qlt_make_local_sess(vha, s_id); 6184 /* sess has got an extra creation ref */ 6185 6186 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6187 if (!sess) 6188 goto out_term2; 6189 } else { 6190 if (sess->deleted) { 6191 sess = NULL; 6192 goto out_term2; 6193 } 6194 6195 if (!kref_get_unless_zero(&sess->sess_kref)) { 6196 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6197 "%s: kref_get fail %8phC \n", 6198 __func__, sess->port_name); 6199 sess = NULL; 6200 goto out_term2; 6201 } 6202 } 6203 6204 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6205 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6206 6207 ha->tgt.tgt_ops->put_sess(sess); 6208 6209 if (rc != 0) 6210 goto out_term; 6211 return; 6212 6213 out_term2: 6214 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6215 6216 out_term: 6217 spin_lock_irqsave(&ha->hardware_lock, flags); 6218 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6219 FCP_TMF_REJECTED, false); 6220 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6221 } 6222 6223 static void qlt_tmr_work(struct qla_tgt *tgt, 6224 struct qla_tgt_sess_work_param *prm) 6225 { 6226 struct atio_from_isp *a = &prm->tm_iocb2; 6227 struct scsi_qla_host *vha = tgt->vha; 6228 struct qla_hw_data *ha = vha->hw; 6229 struct fc_port *sess; 6230 unsigned long flags; 6231 be_id_t s_id; 6232 int rc; 6233 u64 unpacked_lun; 6234 int fn; 6235 void *iocb; 6236 6237 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6238 6239 if (tgt->tgt_stop) 6240 goto out_term2; 6241 6242 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6243 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6244 if (!sess) { 6245 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6246 6247 sess = qlt_make_local_sess(vha, s_id); 6248 /* sess has got an extra creation ref */ 6249 6250 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6251 if (!sess) 6252 goto out_term2; 6253 } else { 6254 if (sess->deleted) { 6255 goto out_term2; 6256 } 6257 6258 if (!kref_get_unless_zero(&sess->sess_kref)) { 6259 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6260 "%s: kref_get fail %8phC\n", 6261 __func__, sess->port_name); 6262 goto out_term2; 6263 } 6264 } 6265 6266 iocb = a; 6267 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6268 unpacked_lun = 6269 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6270 6271 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6272 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6273 6274 ha->tgt.tgt_ops->put_sess(sess); 6275 6276 if (rc != 0) 6277 goto out_term; 6278 return; 6279 6280 out_term2: 6281 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6282 out_term: 6283 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6284 } 6285 6286 static void qlt_sess_work_fn(struct work_struct *work) 6287 { 6288 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6289 struct scsi_qla_host *vha = tgt->vha; 6290 unsigned long flags; 6291 6292 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6293 6294 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6295 while (!list_empty(&tgt->sess_works_list)) { 6296 struct qla_tgt_sess_work_param *prm = list_entry( 6297 tgt->sess_works_list.next, typeof(*prm), 6298 sess_works_list_entry); 6299 6300 /* 6301 * This work can be scheduled on several CPUs at time, so we 6302 * must delete the entry to eliminate double processing 6303 */ 6304 list_del(&prm->sess_works_list_entry); 6305 6306 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6307 6308 switch (prm->type) { 6309 case QLA_TGT_SESS_WORK_ABORT: 6310 qlt_abort_work(tgt, prm); 6311 break; 6312 case QLA_TGT_SESS_WORK_TM: 6313 qlt_tmr_work(tgt, prm); 6314 break; 6315 default: 6316 BUG_ON(1); 6317 break; 6318 } 6319 6320 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6321 6322 kfree(prm); 6323 } 6324 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6325 } 6326 6327 /* Must be called under tgt_host_action_mutex */ 6328 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6329 { 6330 struct qla_tgt *tgt; 6331 int rc, i; 6332 struct qla_qpair_hint *h; 6333 6334 if (!QLA_TGT_MODE_ENABLED()) 6335 return 0; 6336 6337 if (!IS_TGT_MODE_CAPABLE(ha)) { 6338 ql_log(ql_log_warn, base_vha, 0xe070, 6339 "This adapter does not support target mode.\n"); 6340 return 0; 6341 } 6342 6343 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6344 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6345 6346 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6347 6348 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6349 if (!tgt) { 6350 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6351 "Unable to allocate struct qla_tgt\n"); 6352 return -ENOMEM; 6353 } 6354 6355 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6356 sizeof(struct qla_qpair_hint), 6357 GFP_KERNEL); 6358 if (!tgt->qphints) { 6359 kfree(tgt); 6360 ql_log(ql_log_warn, base_vha, 0x0197, 6361 "Unable to allocate qpair hints.\n"); 6362 return -ENOMEM; 6363 } 6364 6365 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6366 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6367 6368 rc = btree_init64(&tgt->lun_qpair_map); 6369 if (rc) { 6370 kfree(tgt->qphints); 6371 kfree(tgt); 6372 ql_log(ql_log_info, base_vha, 0x0198, 6373 "Unable to initialize lun_qpair_map btree\n"); 6374 return -EIO; 6375 } 6376 h = &tgt->qphints[0]; 6377 h->qpair = ha->base_qpair; 6378 INIT_LIST_HEAD(&h->hint_elem); 6379 h->cpuid = ha->base_qpair->cpuid; 6380 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6381 6382 for (i = 0; i < ha->max_qpairs; i++) { 6383 unsigned long flags; 6384 6385 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6386 6387 h = &tgt->qphints[i + 1]; 6388 INIT_LIST_HEAD(&h->hint_elem); 6389 if (qpair) { 6390 h->qpair = qpair; 6391 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6392 list_add_tail(&h->hint_elem, &qpair->hints_list); 6393 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6394 h->cpuid = qpair->cpuid; 6395 } 6396 } 6397 6398 tgt->ha = ha; 6399 tgt->vha = base_vha; 6400 init_waitqueue_head(&tgt->waitQ); 6401 INIT_LIST_HEAD(&tgt->del_sess_list); 6402 spin_lock_init(&tgt->sess_work_lock); 6403 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6404 INIT_LIST_HEAD(&tgt->sess_works_list); 6405 atomic_set(&tgt->tgt_global_resets_count, 0); 6406 6407 base_vha->vha_tgt.qla_tgt = tgt; 6408 6409 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6410 "qla_target(%d): using 64 Bit PCI addressing", 6411 base_vha->vp_idx); 6412 /* 3 is reserved */ 6413 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6414 6415 mutex_lock(&qla_tgt_mutex); 6416 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6417 mutex_unlock(&qla_tgt_mutex); 6418 6419 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6420 ha->tgt.tgt_ops->add_target(base_vha); 6421 6422 return 0; 6423 } 6424 6425 /* Must be called under tgt_host_action_mutex */ 6426 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6427 { 6428 if (!vha->vha_tgt.qla_tgt) 6429 return 0; 6430 6431 if (vha->fc_vport) { 6432 qlt_release(vha->vha_tgt.qla_tgt); 6433 return 0; 6434 } 6435 6436 /* free left over qfull cmds */ 6437 qlt_init_term_exchange(vha); 6438 6439 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6440 vha->host_no, ha); 6441 qlt_release(vha->vha_tgt.qla_tgt); 6442 6443 return 0; 6444 } 6445 6446 void qlt_remove_target_resources(struct qla_hw_data *ha) 6447 { 6448 struct scsi_qla_host *node; 6449 u32 key = 0; 6450 6451 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6452 btree_remove32(&ha->tgt.host_map, key); 6453 6454 btree_destroy32(&ha->tgt.host_map); 6455 } 6456 6457 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6458 unsigned char *b) 6459 { 6460 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6461 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6462 put_unaligned_be64(wwpn, b); 6463 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6464 } 6465 6466 /** 6467 * qlt_lport_register - register lport with external module 6468 * 6469 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6470 * @phys_wwpn: physical port WWPN 6471 * @npiv_wwpn: NPIV WWPN 6472 * @npiv_wwnn: NPIV WWNN 6473 * @callback: lport initialization callback for tcm_qla2xxx code 6474 */ 6475 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6476 u64 npiv_wwpn, u64 npiv_wwnn, 6477 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6478 { 6479 struct qla_tgt *tgt; 6480 struct scsi_qla_host *vha; 6481 struct qla_hw_data *ha; 6482 struct Scsi_Host *host; 6483 unsigned long flags; 6484 int rc; 6485 u8 b[WWN_SIZE]; 6486 6487 mutex_lock(&qla_tgt_mutex); 6488 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6489 vha = tgt->vha; 6490 ha = vha->hw; 6491 6492 host = vha->host; 6493 if (!host) 6494 continue; 6495 6496 if (!(host->hostt->supported_mode & MODE_TARGET)) 6497 continue; 6498 6499 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6500 continue; 6501 6502 spin_lock_irqsave(&ha->hardware_lock, flags); 6503 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6504 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6505 host->host_no); 6506 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6507 continue; 6508 } 6509 if (tgt->tgt_stop) { 6510 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6511 host->host_no); 6512 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6513 continue; 6514 } 6515 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6516 6517 if (!scsi_host_get(host)) { 6518 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6519 "Unable to scsi_host_get() for" 6520 " qla2xxx scsi_host\n"); 6521 continue; 6522 } 6523 qlt_lport_dump(vha, phys_wwpn, b); 6524 6525 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6526 scsi_host_put(host); 6527 continue; 6528 } 6529 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6530 if (rc != 0) 6531 scsi_host_put(host); 6532 6533 mutex_unlock(&qla_tgt_mutex); 6534 return rc; 6535 } 6536 mutex_unlock(&qla_tgt_mutex); 6537 6538 return -ENODEV; 6539 } 6540 EXPORT_SYMBOL(qlt_lport_register); 6541 6542 /** 6543 * qlt_lport_deregister - Degister lport 6544 * 6545 * @vha: Registered scsi_qla_host pointer 6546 */ 6547 void qlt_lport_deregister(struct scsi_qla_host *vha) 6548 { 6549 struct qla_hw_data *ha = vha->hw; 6550 struct Scsi_Host *sh = vha->host; 6551 /* 6552 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6553 */ 6554 vha->vha_tgt.target_lport_ptr = NULL; 6555 ha->tgt.tgt_ops = NULL; 6556 /* 6557 * Release the Scsi_Host reference for the underlying qla2xxx host 6558 */ 6559 scsi_host_put(sh); 6560 } 6561 EXPORT_SYMBOL(qlt_lport_deregister); 6562 6563 /* Must be called under HW lock */ 6564 void qlt_set_mode(struct scsi_qla_host *vha) 6565 { 6566 switch (vha->qlini_mode) { 6567 case QLA2XXX_INI_MODE_DISABLED: 6568 case QLA2XXX_INI_MODE_EXCLUSIVE: 6569 vha->host->active_mode = MODE_TARGET; 6570 break; 6571 case QLA2XXX_INI_MODE_ENABLED: 6572 vha->host->active_mode = MODE_INITIATOR; 6573 break; 6574 case QLA2XXX_INI_MODE_DUAL: 6575 vha->host->active_mode = MODE_DUAL; 6576 break; 6577 default: 6578 break; 6579 } 6580 } 6581 6582 /* Must be called under HW lock */ 6583 static void qlt_clear_mode(struct scsi_qla_host *vha) 6584 { 6585 switch (vha->qlini_mode) { 6586 case QLA2XXX_INI_MODE_DISABLED: 6587 vha->host->active_mode = MODE_UNKNOWN; 6588 break; 6589 case QLA2XXX_INI_MODE_EXCLUSIVE: 6590 vha->host->active_mode = MODE_INITIATOR; 6591 break; 6592 case QLA2XXX_INI_MODE_ENABLED: 6593 case QLA2XXX_INI_MODE_DUAL: 6594 vha->host->active_mode = MODE_INITIATOR; 6595 break; 6596 default: 6597 break; 6598 } 6599 } 6600 6601 /* 6602 * qla_tgt_enable_vha - NO LOCK HELD 6603 * 6604 * host_reset, bring up w/ Target Mode Enabled 6605 */ 6606 void 6607 qlt_enable_vha(struct scsi_qla_host *vha) 6608 { 6609 struct qla_hw_data *ha = vha->hw; 6610 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6611 unsigned long flags; 6612 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6613 6614 if (!tgt) { 6615 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6616 "Unable to locate qla_tgt pointer from" 6617 " struct qla_hw_data\n"); 6618 dump_stack(); 6619 return; 6620 } 6621 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6622 return; 6623 6624 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6625 ha->tgt.num_act_qpairs = ha->max_qpairs; 6626 spin_lock_irqsave(&ha->hardware_lock, flags); 6627 tgt->tgt_stopped = 0; 6628 qlt_set_mode(vha); 6629 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6630 6631 mutex_lock(&ha->optrom_mutex); 6632 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6633 "%s.\n", __func__); 6634 if (vha->vp_idx) { 6635 qla24xx_disable_vp(vha); 6636 qla24xx_enable_vp(vha); 6637 } else { 6638 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6639 qla2xxx_wake_dpc(base_vha); 6640 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6641 QLA_SUCCESS); 6642 } 6643 mutex_unlock(&ha->optrom_mutex); 6644 } 6645 EXPORT_SYMBOL(qlt_enable_vha); 6646 6647 /* 6648 * qla_tgt_disable_vha - NO LOCK HELD 6649 * 6650 * Disable Target Mode and reset the adapter 6651 */ 6652 static void qlt_disable_vha(struct scsi_qla_host *vha) 6653 { 6654 struct qla_hw_data *ha = vha->hw; 6655 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6656 unsigned long flags; 6657 6658 if (!tgt) { 6659 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6660 "Unable to locate qla_tgt pointer from" 6661 " struct qla_hw_data\n"); 6662 dump_stack(); 6663 return; 6664 } 6665 6666 spin_lock_irqsave(&ha->hardware_lock, flags); 6667 qlt_clear_mode(vha); 6668 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6669 6670 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6671 qla2xxx_wake_dpc(vha); 6672 6673 /* 6674 * We are expecting the offline state. 6675 * QLA_FUNCTION_FAILED means that adapter is offline. 6676 */ 6677 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6678 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6679 "adapter is offline\n"); 6680 } 6681 6682 /* 6683 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6684 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6685 * members. 6686 */ 6687 void 6688 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6689 { 6690 vha->vha_tgt.qla_tgt = NULL; 6691 6692 mutex_init(&vha->vha_tgt.tgt_mutex); 6693 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6694 6695 qlt_clear_mode(vha); 6696 6697 /* 6698 * NOTE: Currently the value is kept the same for <24xx and 6699 * >=24xx ISPs. If it is necessary to change it, 6700 * the check should be added for specific ISPs, 6701 * assigning the value appropriately. 6702 */ 6703 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6704 6705 qlt_add_target(ha, vha); 6706 } 6707 6708 u8 6709 qlt_rff_id(struct scsi_qla_host *vha) 6710 { 6711 u8 fc4_feature = 0; 6712 /* 6713 * FC-4 Feature bit 0 indicates target functionality to the name server. 6714 */ 6715 if (qla_tgt_mode_enabled(vha)) { 6716 fc4_feature = BIT_0; 6717 } else if (qla_ini_mode_enabled(vha)) { 6718 fc4_feature = BIT_1; 6719 } else if (qla_dual_mode_enabled(vha)) 6720 fc4_feature = BIT_0 | BIT_1; 6721 6722 return fc4_feature; 6723 } 6724 6725 /* 6726 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6727 * @ha: HA context 6728 * 6729 * Beginning of ATIO ring has initialization control block already built 6730 * by nvram config routine. 6731 * 6732 * Returns 0 on success. 6733 */ 6734 void 6735 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6736 { 6737 struct qla_hw_data *ha = vha->hw; 6738 uint16_t cnt; 6739 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6740 6741 if (qla_ini_mode_enabled(vha)) 6742 return; 6743 6744 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6745 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6746 pkt++; 6747 } 6748 6749 } 6750 6751 /* 6752 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6753 * @ha: SCSI driver HA context 6754 */ 6755 void 6756 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6757 { 6758 struct qla_hw_data *ha = vha->hw; 6759 struct atio_from_isp *pkt; 6760 int cnt, i; 6761 6762 if (!ha->flags.fw_started) 6763 return; 6764 6765 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6766 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6767 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6768 cnt = pkt->u.raw.entry_count; 6769 6770 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6771 /* 6772 * This packet is corrupted. The header + payload 6773 * can not be trusted. There is no point in passing 6774 * it further up. 6775 */ 6776 ql_log(ql_log_warn, vha, 0xd03c, 6777 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6778 &pkt->u.isp24.fcp_hdr.s_id, 6779 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6780 pkt->u.isp24.exchange_addr, pkt); 6781 6782 adjust_corrupted_atio(pkt); 6783 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6784 ha_locked, 0); 6785 } else { 6786 qlt_24xx_atio_pkt_all_vps(vha, 6787 (struct atio_from_isp *)pkt, ha_locked); 6788 } 6789 6790 for (i = 0; i < cnt; i++) { 6791 ha->tgt.atio_ring_index++; 6792 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6793 ha->tgt.atio_ring_index = 0; 6794 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6795 } else 6796 ha->tgt.atio_ring_ptr++; 6797 6798 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6799 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6800 } 6801 wmb(); 6802 } 6803 6804 /* Adjust ring index */ 6805 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6806 } 6807 6808 void 6809 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6810 { 6811 struct qla_hw_data *ha = vha->hw; 6812 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6813 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6814 6815 if (!QLA_TGT_MODE_ENABLED()) 6816 return; 6817 6818 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6819 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6820 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6821 6822 if (ha->flags.msix_enabled) { 6823 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6824 if (IS_QLA2071(ha)) { 6825 /* 4 ports Baker: Enable Interrupt Handshake */ 6826 icb->msix_atio = 0; 6827 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6828 } else { 6829 icb->msix_atio = cpu_to_le16(msix->entry); 6830 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6831 } 6832 ql_dbg(ql_dbg_init, vha, 0xf072, 6833 "Registering ICB vector 0x%x for atio que.\n", 6834 msix->entry); 6835 } 6836 } else { 6837 /* INTx|MSI */ 6838 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6839 icb->msix_atio = 0; 6840 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6841 ql_dbg(ql_dbg_init, vha, 0xf072, 6842 "%s: Use INTx for ATIOQ.\n", __func__); 6843 } 6844 } 6845 } 6846 6847 void 6848 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6849 { 6850 struct qla_hw_data *ha = vha->hw; 6851 u32 tmp; 6852 6853 if (!QLA_TGT_MODE_ENABLED()) 6854 return; 6855 6856 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6857 if (!ha->tgt.saved_set) { 6858 /* We save only once */ 6859 ha->tgt.saved_exchange_count = nv->exchange_count; 6860 ha->tgt.saved_firmware_options_1 = 6861 nv->firmware_options_1; 6862 ha->tgt.saved_firmware_options_2 = 6863 nv->firmware_options_2; 6864 ha->tgt.saved_firmware_options_3 = 6865 nv->firmware_options_3; 6866 ha->tgt.saved_set = 1; 6867 } 6868 6869 if (qla_tgt_mode_enabled(vha)) 6870 nv->exchange_count = cpu_to_le16(0xFFFF); 6871 else /* dual */ 6872 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6873 6874 /* Enable target mode */ 6875 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6876 6877 /* Disable ini mode, if requested */ 6878 if (qla_tgt_mode_enabled(vha)) 6879 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6880 6881 /* Disable Full Login after LIP */ 6882 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6883 /* Enable initial LIP */ 6884 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6885 if (ql2xtgt_tape_enable) 6886 /* Enable FC Tape support */ 6887 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6888 else 6889 /* Disable FC Tape support */ 6890 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6891 6892 /* Disable Full Login after LIP */ 6893 nv->host_p &= cpu_to_le32(~BIT_10); 6894 6895 /* 6896 * clear BIT 15 explicitly as we have seen at least 6897 * a couple of instances where this was set and this 6898 * was causing the firmware to not be initialized. 6899 */ 6900 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6901 /* Enable target PRLI control */ 6902 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6903 6904 if (IS_QLA25XX(ha)) { 6905 /* Change Loop-prefer to Pt-Pt */ 6906 tmp = ~(BIT_4|BIT_5|BIT_6); 6907 nv->firmware_options_2 &= cpu_to_le32(tmp); 6908 tmp = P2P << 4; 6909 nv->firmware_options_2 |= cpu_to_le32(tmp); 6910 } 6911 } else { 6912 if (ha->tgt.saved_set) { 6913 nv->exchange_count = ha->tgt.saved_exchange_count; 6914 nv->firmware_options_1 = 6915 ha->tgt.saved_firmware_options_1; 6916 nv->firmware_options_2 = 6917 ha->tgt.saved_firmware_options_2; 6918 nv->firmware_options_3 = 6919 ha->tgt.saved_firmware_options_3; 6920 } 6921 return; 6922 } 6923 6924 if (ha->base_qpair->enable_class_2) { 6925 if (vha->flags.init_done) 6926 fc_host_supported_classes(vha->host) = 6927 FC_COS_CLASS2 | FC_COS_CLASS3; 6928 6929 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6930 } else { 6931 if (vha->flags.init_done) 6932 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6933 6934 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6935 } 6936 } 6937 6938 void 6939 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6940 struct init_cb_24xx *icb) 6941 { 6942 struct qla_hw_data *ha = vha->hw; 6943 6944 if (!QLA_TGT_MODE_ENABLED()) 6945 return; 6946 6947 if (ha->tgt.node_name_set) { 6948 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6949 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6950 } 6951 } 6952 6953 void 6954 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6955 { 6956 struct qla_hw_data *ha = vha->hw; 6957 u32 tmp; 6958 6959 if (!QLA_TGT_MODE_ENABLED()) 6960 return; 6961 6962 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6963 if (!ha->tgt.saved_set) { 6964 /* We save only once */ 6965 ha->tgt.saved_exchange_count = nv->exchange_count; 6966 ha->tgt.saved_firmware_options_1 = 6967 nv->firmware_options_1; 6968 ha->tgt.saved_firmware_options_2 = 6969 nv->firmware_options_2; 6970 ha->tgt.saved_firmware_options_3 = 6971 nv->firmware_options_3; 6972 ha->tgt.saved_set = 1; 6973 } 6974 6975 if (qla_tgt_mode_enabled(vha)) 6976 nv->exchange_count = cpu_to_le16(0xFFFF); 6977 else /* dual */ 6978 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6979 6980 /* Enable target mode */ 6981 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6982 6983 /* Disable ini mode, if requested */ 6984 if (qla_tgt_mode_enabled(vha)) 6985 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6986 /* Disable Full Login after LIP */ 6987 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6988 /* Enable initial LIP */ 6989 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6990 /* 6991 * clear BIT 15 explicitly as we have seen at 6992 * least a couple of instances where this was set 6993 * and this was causing the firmware to not be 6994 * initialized. 6995 */ 6996 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6997 if (ql2xtgt_tape_enable) 6998 /* Enable FC tape support */ 6999 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7000 else 7001 /* Disable FC tape support */ 7002 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7003 7004 /* Disable Full Login after LIP */ 7005 nv->host_p &= cpu_to_le32(~BIT_10); 7006 /* Enable target PRLI control */ 7007 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7008 7009 /* Change Loop-prefer to Pt-Pt */ 7010 tmp = ~(BIT_4|BIT_5|BIT_6); 7011 nv->firmware_options_2 &= cpu_to_le32(tmp); 7012 tmp = P2P << 4; 7013 nv->firmware_options_2 |= cpu_to_le32(tmp); 7014 } else { 7015 if (ha->tgt.saved_set) { 7016 nv->exchange_count = ha->tgt.saved_exchange_count; 7017 nv->firmware_options_1 = 7018 ha->tgt.saved_firmware_options_1; 7019 nv->firmware_options_2 = 7020 ha->tgt.saved_firmware_options_2; 7021 nv->firmware_options_3 = 7022 ha->tgt.saved_firmware_options_3; 7023 } 7024 return; 7025 } 7026 7027 if (ha->base_qpair->enable_class_2) { 7028 if (vha->flags.init_done) 7029 fc_host_supported_classes(vha->host) = 7030 FC_COS_CLASS2 | FC_COS_CLASS3; 7031 7032 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7033 } else { 7034 if (vha->flags.init_done) 7035 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7036 7037 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7038 } 7039 } 7040 7041 void 7042 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7043 struct init_cb_81xx *icb) 7044 { 7045 struct qla_hw_data *ha = vha->hw; 7046 7047 if (!QLA_TGT_MODE_ENABLED()) 7048 return; 7049 7050 if (ha->tgt.node_name_set) { 7051 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7052 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7053 } 7054 } 7055 7056 void 7057 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7058 { 7059 if (!QLA_TGT_MODE_ENABLED()) 7060 return; 7061 7062 ha->msix_count += 1; /* For ATIO Q */ 7063 } 7064 7065 7066 void 7067 qlt_modify_vp_config(struct scsi_qla_host *vha, 7068 struct vp_config_entry_24xx *vpmod) 7069 { 7070 /* enable target mode. Bit5 = 1 => disable */ 7071 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7072 vpmod->options_idx1 &= ~BIT_5; 7073 7074 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7075 if (qla_tgt_mode_enabled(vha)) 7076 vpmod->options_idx1 &= ~BIT_4; 7077 } 7078 7079 void 7080 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7081 { 7082 int rc; 7083 7084 if (!QLA_TGT_MODE_ENABLED()) 7085 return; 7086 7087 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7088 IS_QLA28XX(ha)) { 7089 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7090 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7091 } else { 7092 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7093 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7094 } 7095 7096 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7097 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7098 7099 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7100 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7101 qlt_unknown_atio_work_fn); 7102 7103 qlt_clear_mode(base_vha); 7104 7105 rc = btree_init32(&ha->tgt.host_map); 7106 if (rc) 7107 ql_log(ql_log_info, base_vha, 0xd03d, 7108 "Unable to initialize ha->host_map btree\n"); 7109 7110 qlt_update_vp_map(base_vha, SET_VP_IDX); 7111 } 7112 7113 irqreturn_t 7114 qla83xx_msix_atio_q(int irq, void *dev_id) 7115 { 7116 struct rsp_que *rsp; 7117 scsi_qla_host_t *vha; 7118 struct qla_hw_data *ha; 7119 unsigned long flags; 7120 7121 rsp = (struct rsp_que *) dev_id; 7122 ha = rsp->hw; 7123 vha = pci_get_drvdata(ha->pdev); 7124 7125 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7126 7127 qlt_24xx_process_atio_queue(vha, 0); 7128 7129 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7130 7131 return IRQ_HANDLED; 7132 } 7133 7134 static void 7135 qlt_handle_abts_recv_work(struct work_struct *work) 7136 { 7137 struct qla_tgt_sess_op *op = container_of(work, 7138 struct qla_tgt_sess_op, work); 7139 scsi_qla_host_t *vha = op->vha; 7140 struct qla_hw_data *ha = vha->hw; 7141 unsigned long flags; 7142 7143 if (qla2x00_reset_active(vha) || 7144 (op->chip_reset != ha->base_qpair->chip_reset)) 7145 return; 7146 7147 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7148 qlt_24xx_process_atio_queue(vha, 0); 7149 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7150 7151 spin_lock_irqsave(&ha->hardware_lock, flags); 7152 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7153 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7154 7155 kfree(op); 7156 } 7157 7158 void 7159 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7160 response_t *pkt) 7161 { 7162 struct qla_tgt_sess_op *op; 7163 7164 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7165 7166 if (!op) { 7167 /* do not reach for ATIO queue here. This is best effort err 7168 * recovery at this point. 7169 */ 7170 qlt_response_pkt_all_vps(vha, rsp, pkt); 7171 return; 7172 } 7173 7174 memcpy(&op->atio, pkt, sizeof(*pkt)); 7175 op->vha = vha; 7176 op->chip_reset = vha->hw->base_qpair->chip_reset; 7177 op->rsp = rsp; 7178 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7179 queue_work(qla_tgt_wq, &op->work); 7180 return; 7181 } 7182 7183 int 7184 qlt_mem_alloc(struct qla_hw_data *ha) 7185 { 7186 if (!QLA_TGT_MODE_ENABLED()) 7187 return 0; 7188 7189 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7190 sizeof(struct qla_tgt_vp_map), 7191 GFP_KERNEL); 7192 if (!ha->tgt.tgt_vp_map) 7193 return -ENOMEM; 7194 7195 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7196 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7197 &ha->tgt.atio_dma, GFP_KERNEL); 7198 if (!ha->tgt.atio_ring) { 7199 kfree(ha->tgt.tgt_vp_map); 7200 return -ENOMEM; 7201 } 7202 return 0; 7203 } 7204 7205 void 7206 qlt_mem_free(struct qla_hw_data *ha) 7207 { 7208 if (!QLA_TGT_MODE_ENABLED()) 7209 return; 7210 7211 if (ha->tgt.atio_ring) { 7212 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7213 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7214 ha->tgt.atio_dma); 7215 } 7216 ha->tgt.atio_ring = NULL; 7217 ha->tgt.atio_dma = 0; 7218 kfree(ha->tgt.tgt_vp_map); 7219 ha->tgt.tgt_vp_map = NULL; 7220 } 7221 7222 /* vport_slock to be held by the caller */ 7223 void 7224 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7225 { 7226 void *slot; 7227 u32 key; 7228 int rc; 7229 7230 if (!QLA_TGT_MODE_ENABLED()) 7231 return; 7232 7233 key = vha->d_id.b24; 7234 7235 switch (cmd) { 7236 case SET_VP_IDX: 7237 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7238 break; 7239 case SET_AL_PA: 7240 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7241 if (!slot) { 7242 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7243 "Save vha in host_map %p %06x\n", vha, key); 7244 rc = btree_insert32(&vha->hw->tgt.host_map, 7245 key, vha, GFP_ATOMIC); 7246 if (rc) 7247 ql_log(ql_log_info, vha, 0xd03e, 7248 "Unable to insert s_id into host_map: %06x\n", 7249 key); 7250 return; 7251 } 7252 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7253 "replace existing vha in host_map %p %06x\n", vha, key); 7254 btree_update32(&vha->hw->tgt.host_map, key, vha); 7255 break; 7256 case RESET_VP_IDX: 7257 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7258 break; 7259 case RESET_AL_PA: 7260 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7261 "clear vha in host_map %p %06x\n", vha, key); 7262 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7263 if (slot) 7264 btree_remove32(&vha->hw->tgt.host_map, key); 7265 vha->d_id.b24 = 0; 7266 break; 7267 } 7268 } 7269 7270 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7271 { 7272 7273 if (!vha->d_id.b24) { 7274 vha->d_id = id; 7275 qlt_update_vp_map(vha, SET_AL_PA); 7276 } else if (vha->d_id.b24 != id.b24) { 7277 qlt_update_vp_map(vha, RESET_AL_PA); 7278 vha->d_id = id; 7279 qlt_update_vp_map(vha, SET_AL_PA); 7280 } 7281 } 7282 7283 static int __init qlt_parse_ini_mode(void) 7284 { 7285 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7286 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7287 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7288 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7289 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7290 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7291 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7292 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7293 else 7294 return false; 7295 7296 return true; 7297 } 7298 7299 int __init qlt_init(void) 7300 { 7301 int ret; 7302 7303 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7304 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7305 7306 if (!qlt_parse_ini_mode()) { 7307 ql_log(ql_log_fatal, NULL, 0xe06b, 7308 "qlt_parse_ini_mode() failed\n"); 7309 return -EINVAL; 7310 } 7311 7312 if (!QLA_TGT_MODE_ENABLED()) 7313 return 0; 7314 7315 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7316 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7317 qla_tgt_mgmt_cmd), 0, NULL); 7318 if (!qla_tgt_mgmt_cmd_cachep) { 7319 ql_log(ql_log_fatal, NULL, 0xd04b, 7320 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7321 return -ENOMEM; 7322 } 7323 7324 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7325 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7326 0, NULL); 7327 7328 if (!qla_tgt_plogi_cachep) { 7329 ql_log(ql_log_fatal, NULL, 0xe06d, 7330 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7331 ret = -ENOMEM; 7332 goto out_mgmt_cmd_cachep; 7333 } 7334 7335 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7336 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7337 if (!qla_tgt_mgmt_cmd_mempool) { 7338 ql_log(ql_log_fatal, NULL, 0xe06e, 7339 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7340 ret = -ENOMEM; 7341 goto out_plogi_cachep; 7342 } 7343 7344 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7345 if (!qla_tgt_wq) { 7346 ql_log(ql_log_fatal, NULL, 0xe06f, 7347 "alloc_workqueue for qla_tgt_wq failed\n"); 7348 ret = -ENOMEM; 7349 goto out_cmd_mempool; 7350 } 7351 /* 7352 * Return 1 to signal that initiator-mode is being disabled 7353 */ 7354 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7355 7356 out_cmd_mempool: 7357 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7358 out_plogi_cachep: 7359 kmem_cache_destroy(qla_tgt_plogi_cachep); 7360 out_mgmt_cmd_cachep: 7361 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7362 return ret; 7363 } 7364 7365 void qlt_exit(void) 7366 { 7367 if (!QLA_TGT_MODE_ENABLED()) 7368 return; 7369 7370 destroy_workqueue(qla_tgt_wq); 7371 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7372 kmem_cache_destroy(qla_tgt_plogi_cachep); 7373 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7374 } 7375