1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/blkdev.h> 21 #include <linux/interrupt.h> 22 #include <linux/pci.h> 23 #include <linux/delay.h> 24 #include <linux/list.h> 25 #include <linux/workqueue.h> 26 #include <asm/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 54 "For Dual Mode (qlini_mode=dual), this parameter determines " 55 "the percentage of exchanges/cmds FW will allocate resources " 56 "for Target mode."); 57 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum fcp_resp_rsp_codes { 74 FCP_TMF_CMPL = 0, 75 FCP_DATA_LEN_INVALID = 1, 76 FCP_CMND_FIELDS_INVALID = 2, 77 FCP_DATA_PARAM_MISMATCH = 3, 78 FCP_TMF_REJECTED = 4, 79 FCP_TMF_FAILED = 5, 80 FCP_TMF_INVALID_LUN = 9, 81 }; 82 83 /* 84 * fc_pri_ta from scsi/fc/fc_fcp.h 85 */ 86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 90 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 93 94 /* 95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 96 * must be called under HW lock and could unlock/lock it inside. 97 * It isn't an issue, since in the current implementation on the time when 98 * those functions are called: 99 * 100 * - Either context is IRQ and only IRQ handler can modify HW data, 101 * including rings related fields, 102 * 103 * - Or access to target mode variables from struct qla_tgt doesn't 104 * cross those functions boundaries, except tgt_stop, which 105 * additionally protected by irq_cmd_count. 106 */ 107 /* Predefs for callbacks handed to qla2xxx LLD */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static void qlt_send_notify_ack(struct qla_qpair *qpair, 121 struct imm_ntfy_from_isp *ntfy, 122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static const char *prot_op_str(u32 prot_op) 147 { 148 switch (prot_op) { 149 case TARGET_PROT_NORMAL: return "NORMAL"; 150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 154 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 156 default: return "UNKNOWN"; 157 } 158 } 159 160 /* This API intentionally takes dest as a parameter, rather than returning 161 * int value to avoid caller forgetting to issue wmb() after the store */ 162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 163 { 164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 165 *dest = atomic_inc_return(&base_vha->generation_tick); 166 /* memory barrier */ 167 wmb(); 168 } 169 170 /* Might release hw lock, then reaquire!! */ 171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 172 { 173 /* Send marker if required */ 174 if (unlikely(vha->marker_needed != 0)) { 175 int rc = qla2x00_issue_marker(vha, vha_locked); 176 177 if (rc != QLA_SUCCESS) { 178 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 179 "qla_target(%d): issue_marker() failed\n", 180 vha->vp_idx); 181 } 182 return rc; 183 } 184 return QLA_SUCCESS; 185 } 186 187 static inline 188 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 189 be_id_t d_id) 190 { 191 struct scsi_qla_host *host; 192 uint32_t key; 193 194 if (vha->d_id.b.area == d_id.area && 195 vha->d_id.b.domain == d_id.domain && 196 vha->d_id.b.al_pa == d_id.al_pa) 197 return vha; 198 199 key = be_to_port_id(d_id).b24; 200 201 host = btree_lookup32(&vha->hw->tgt.host_map, key); 202 if (!host) 203 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 204 "Unable to find host %06x\n", key); 205 206 return host; 207 } 208 209 static inline 210 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 211 uint16_t vp_idx) 212 { 213 struct qla_hw_data *ha = vha->hw; 214 215 if (vha->vp_idx == vp_idx) 216 return vha; 217 218 BUG_ON(ha->tgt.tgt_vp_map == NULL); 219 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 220 return ha->tgt.tgt_vp_map[vp_idx].vha; 221 222 return NULL; 223 } 224 225 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 226 { 227 unsigned long flags; 228 229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 230 231 vha->hw->tgt.num_pend_cmds++; 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 233 vha->qla_stats.stat_max_pend_cmds = 234 vha->hw->tgt.num_pend_cmds; 235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 236 } 237 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 238 { 239 unsigned long flags; 240 241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 242 vha->hw->tgt.num_pend_cmds--; 243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 244 } 245 246 247 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 248 struct atio_from_isp *atio, uint8_t ha_locked) 249 { 250 struct qla_tgt_sess_op *u; 251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 252 unsigned long flags; 253 254 if (tgt->tgt_stop) { 255 ql_dbg(ql_dbg_async, vha, 0x502c, 256 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 257 vha->vp_idx); 258 goto out_term; 259 } 260 261 u = kzalloc(sizeof(*u), GFP_ATOMIC); 262 if (u == NULL) 263 goto out_term; 264 265 u->vha = vha; 266 memcpy(&u->atio, atio, sizeof(*atio)); 267 INIT_LIST_HEAD(&u->cmd_list); 268 269 spin_lock_irqsave(&vha->cmd_list_lock, flags); 270 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 271 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 272 273 schedule_delayed_work(&vha->unknown_atio_work, 1); 274 275 out: 276 return; 277 278 out_term: 279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 280 goto out; 281 } 282 283 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 284 uint8_t ha_locked) 285 { 286 struct qla_tgt_sess_op *u, *t; 287 scsi_qla_host_t *host; 288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 289 unsigned long flags; 290 uint8_t queued = 0; 291 292 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 293 if (u->aborted) { 294 ql_dbg(ql_dbg_async, vha, 0x502e, 295 "Freeing unknown %s %p, because of Abort\n", 296 "ATIO_TYPE7", u); 297 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 298 &u->atio, ha_locked, 0); 299 goto abort; 300 } 301 302 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 303 if (host != NULL) { 304 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 305 "Requeuing unknown ATIO_TYPE7 %p\n", u); 306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 307 } else if (tgt->tgt_stop) { 308 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 309 "Freeing unknown %s %p, because tgt is being stopped\n", 310 "ATIO_TYPE7", u); 311 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 312 &u->atio, ha_locked, 0); 313 } else { 314 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 315 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 316 if (!queued) { 317 queued = 1; 318 schedule_delayed_work(&vha->unknown_atio_work, 319 1); 320 } 321 continue; 322 } 323 324 abort: 325 spin_lock_irqsave(&vha->cmd_list_lock, flags); 326 list_del(&u->cmd_list); 327 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 328 kfree(u); 329 } 330 } 331 332 void qlt_unknown_atio_work_fn(struct work_struct *work) 333 { 334 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 335 struct scsi_qla_host, unknown_atio_work); 336 337 qlt_try_to_dequeue_unknown_atios(vha, 0); 338 } 339 340 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 341 struct atio_from_isp *atio, uint8_t ha_locked) 342 { 343 ql_dbg(ql_dbg_tgt, vha, 0xe072, 344 "%s: qla_target(%d): type %x ox_id %04x\n", 345 __func__, vha->vp_idx, atio->u.raw.entry_type, 346 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 347 348 switch (atio->u.raw.entry_type) { 349 case ATIO_TYPE7: 350 { 351 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 352 atio->u.isp24.fcp_hdr.d_id); 353 if (unlikely(NULL == host)) { 354 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 355 "qla_target(%d): Received ATIO_TYPE7 " 356 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 357 atio->u.isp24.fcp_hdr.d_id.domain, 358 atio->u.isp24.fcp_hdr.d_id.area, 359 atio->u.isp24.fcp_hdr.d_id.al_pa); 360 361 362 qlt_queue_unknown_atio(vha, atio, ha_locked); 363 break; 364 } 365 if (unlikely(!list_empty(&vha->unknown_atio_list))) 366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 367 368 qlt_24xx_atio_pkt(host, atio, ha_locked); 369 break; 370 } 371 372 case IMMED_NOTIFY_TYPE: 373 { 374 struct scsi_qla_host *host = vha; 375 struct imm_ntfy_from_isp *entry = 376 (struct imm_ntfy_from_isp *)atio; 377 378 qlt_issue_marker(vha, ha_locked); 379 380 if ((entry->u.isp24.vp_index != 0xFF) && 381 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 382 host = qlt_find_host_by_vp_idx(vha, 383 entry->u.isp24.vp_index); 384 if (unlikely(!host)) { 385 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 386 "qla_target(%d): Received " 387 "ATIO (IMMED_NOTIFY_TYPE) " 388 "with unknown vp_index %d\n", 389 vha->vp_idx, entry->u.isp24.vp_index); 390 break; 391 } 392 } 393 qlt_24xx_atio_pkt(host, atio, ha_locked); 394 break; 395 } 396 397 case VP_RPT_ID_IOCB_TYPE: 398 qla24xx_report_id_acquisition(vha, 399 (struct vp_rpt_id_entry_24xx *)atio); 400 break; 401 402 case ABTS_RECV_24XX: 403 { 404 struct abts_recv_from_24xx *entry = 405 (struct abts_recv_from_24xx *)atio; 406 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 407 entry->vp_index); 408 unsigned long flags; 409 410 if (unlikely(!host)) { 411 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 412 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 413 "received, with unknown vp_index %d\n", 414 vha->vp_idx, entry->vp_index); 415 break; 416 } 417 if (!ha_locked) 418 spin_lock_irqsave(&host->hw->hardware_lock, flags); 419 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 420 if (!ha_locked) 421 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 422 break; 423 } 424 425 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 426 427 default: 428 ql_dbg(ql_dbg_tgt, vha, 0xe040, 429 "qla_target(%d): Received unknown ATIO atio " 430 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 431 break; 432 } 433 434 return false; 435 } 436 437 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 438 struct rsp_que *rsp, response_t *pkt) 439 { 440 switch (pkt->entry_type) { 441 case CTIO_CRC2: 442 ql_dbg(ql_dbg_tgt, vha, 0xe073, 443 "qla_target(%d):%s: CRC2 Response pkt\n", 444 vha->vp_idx, __func__); 445 fallthrough; 446 case CTIO_TYPE7: 447 { 448 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 449 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 450 entry->vp_index); 451 if (unlikely(!host)) { 452 ql_dbg(ql_dbg_tgt, vha, 0xe041, 453 "qla_target(%d): Response pkt (CTIO_TYPE7) " 454 "received, with unknown vp_index %d\n", 455 vha->vp_idx, entry->vp_index); 456 break; 457 } 458 qlt_response_pkt(host, rsp, pkt); 459 break; 460 } 461 462 case IMMED_NOTIFY_TYPE: 463 { 464 struct scsi_qla_host *host; 465 struct imm_ntfy_from_isp *entry = 466 (struct imm_ntfy_from_isp *)pkt; 467 468 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 469 if (unlikely(!host)) { 470 ql_dbg(ql_dbg_tgt, vha, 0xe042, 471 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 472 "received, with unknown vp_index %d\n", 473 vha->vp_idx, entry->u.isp24.vp_index); 474 break; 475 } 476 qlt_response_pkt(host, rsp, pkt); 477 break; 478 } 479 480 case NOTIFY_ACK_TYPE: 481 { 482 struct scsi_qla_host *host = vha; 483 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 484 485 if (0xFF != entry->u.isp24.vp_index) { 486 host = qlt_find_host_by_vp_idx(vha, 487 entry->u.isp24.vp_index); 488 if (unlikely(!host)) { 489 ql_dbg(ql_dbg_tgt, vha, 0xe043, 490 "qla_target(%d): Response " 491 "pkt (NOTIFY_ACK_TYPE) " 492 "received, with unknown " 493 "vp_index %d\n", vha->vp_idx, 494 entry->u.isp24.vp_index); 495 break; 496 } 497 } 498 qlt_response_pkt(host, rsp, pkt); 499 break; 500 } 501 502 case ABTS_RECV_24XX: 503 { 504 struct abts_recv_from_24xx *entry = 505 (struct abts_recv_from_24xx *)pkt; 506 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 507 entry->vp_index); 508 if (unlikely(!host)) { 509 ql_dbg(ql_dbg_tgt, vha, 0xe044, 510 "qla_target(%d): Response pkt " 511 "(ABTS_RECV_24XX) received, with unknown " 512 "vp_index %d\n", vha->vp_idx, entry->vp_index); 513 break; 514 } 515 qlt_response_pkt(host, rsp, pkt); 516 break; 517 } 518 519 case ABTS_RESP_24XX: 520 { 521 struct abts_resp_to_24xx *entry = 522 (struct abts_resp_to_24xx *)pkt; 523 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 524 entry->vp_index); 525 if (unlikely(!host)) { 526 ql_dbg(ql_dbg_tgt, vha, 0xe045, 527 "qla_target(%d): Response pkt " 528 "(ABTS_RECV_24XX) received, with unknown " 529 "vp_index %d\n", vha->vp_idx, entry->vp_index); 530 break; 531 } 532 qlt_response_pkt(host, rsp, pkt); 533 break; 534 } 535 default: 536 qlt_response_pkt(vha, rsp, pkt); 537 break; 538 } 539 540 } 541 542 /* 543 * All qlt_plogi_ack_t operations are protected by hardware_lock 544 */ 545 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 546 struct imm_ntfy_from_isp *ntfy, int type) 547 { 548 struct qla_work_evt *e; 549 550 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 551 if (!e) 552 return QLA_FUNCTION_FAILED; 553 554 e->u.nack.fcport = fcport; 555 e->u.nack.type = type; 556 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 557 return qla2x00_post_work(vha, e); 558 } 559 560 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 561 { 562 struct scsi_qla_host *vha = sp->vha; 563 unsigned long flags; 564 565 ql_dbg(ql_dbg_disc, vha, 0x20f2, 566 "Async done-%s res %x %8phC type %d\n", 567 sp->name, res, sp->fcport->port_name, sp->type); 568 569 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 570 sp->fcport->flags &= ~FCF_ASYNC_SENT; 571 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 572 573 switch (sp->type) { 574 case SRB_NACK_PLOGI: 575 sp->fcport->login_gen++; 576 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 577 sp->fcport->logout_on_delete = 1; 578 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 579 sp->fcport->send_els_logo = 0; 580 break; 581 582 case SRB_NACK_PRLI: 583 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 584 sp->fcport->deleted = 0; 585 sp->fcport->send_els_logo = 0; 586 587 if (!sp->fcport->login_succ && 588 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 589 sp->fcport->login_succ = 1; 590 591 vha->fcport_count++; 592 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 593 qla24xx_sched_upd_fcport(sp->fcport); 594 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 595 } else { 596 sp->fcport->login_retry = 0; 597 qla2x00_set_fcport_disc_state(sp->fcport, 598 DSC_LOGIN_COMPLETE); 599 sp->fcport->deleted = 0; 600 sp->fcport->logout_on_delete = 1; 601 } 602 break; 603 604 case SRB_NACK_LOGO: 605 sp->fcport->login_gen++; 606 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 607 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 608 break; 609 } 610 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 611 612 sp->free(sp); 613 } 614 615 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 616 struct imm_ntfy_from_isp *ntfy, int type) 617 { 618 int rval = QLA_FUNCTION_FAILED; 619 srb_t *sp; 620 char *c = NULL; 621 622 fcport->flags |= FCF_ASYNC_SENT; 623 switch (type) { 624 case SRB_NACK_PLOGI: 625 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 626 c = "PLOGI"; 627 break; 628 case SRB_NACK_PRLI: 629 fcport->fw_login_state = DSC_LS_PRLI_PEND; 630 fcport->deleted = 0; 631 c = "PRLI"; 632 break; 633 case SRB_NACK_LOGO: 634 fcport->fw_login_state = DSC_LS_LOGO_PEND; 635 c = "LOGO"; 636 break; 637 } 638 639 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 640 if (!sp) 641 goto done; 642 643 sp->type = type; 644 sp->name = "nack"; 645 646 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 647 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 648 649 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 650 sp->done = qla2x00_async_nack_sp_done; 651 652 ql_dbg(ql_dbg_disc, vha, 0x20f4, 653 "Async-%s %8phC hndl %x %s\n", 654 sp->name, fcport->port_name, sp->handle, c); 655 656 rval = qla2x00_start_sp(sp); 657 if (rval != QLA_SUCCESS) 658 goto done_free_sp; 659 660 return rval; 661 662 done_free_sp: 663 sp->free(sp); 664 done: 665 fcport->flags &= ~FCF_ASYNC_SENT; 666 return rval; 667 } 668 669 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 670 { 671 fc_port_t *t; 672 673 switch (e->u.nack.type) { 674 case SRB_NACK_PRLI: 675 t = e->u.nack.fcport; 676 flush_work(&t->del_work); 677 flush_work(&t->free_work); 678 mutex_lock(&vha->vha_tgt.tgt_mutex); 679 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 680 mutex_unlock(&vha->vha_tgt.tgt_mutex); 681 if (t) { 682 ql_log(ql_log_info, vha, 0xd034, 683 "%s create sess success %p", __func__, t); 684 /* create sess has an extra kref */ 685 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 686 } 687 break; 688 } 689 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 690 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 691 } 692 693 void qla24xx_delete_sess_fn(struct work_struct *work) 694 { 695 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 696 struct qla_hw_data *ha = fcport->vha->hw; 697 698 if (fcport->se_sess) { 699 ha->tgt.tgt_ops->shutdown_sess(fcport); 700 ha->tgt.tgt_ops->put_sess(fcport); 701 } else { 702 qlt_unreg_sess(fcport); 703 } 704 } 705 706 /* 707 * Called from qla2x00_reg_remote_port() 708 */ 709 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 710 { 711 struct qla_hw_data *ha = vha->hw; 712 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 713 struct fc_port *sess = fcport; 714 unsigned long flags; 715 716 if (!vha->hw->tgt.tgt_ops) 717 return; 718 719 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 720 if (tgt->tgt_stop) { 721 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 722 return; 723 } 724 725 if (fcport->disc_state == DSC_DELETE_PEND) { 726 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 727 return; 728 } 729 730 if (!sess->se_sess) { 731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 732 733 mutex_lock(&vha->vha_tgt.tgt_mutex); 734 sess = qlt_create_sess(vha, fcport, false); 735 mutex_unlock(&vha->vha_tgt.tgt_mutex); 736 737 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 738 } else { 739 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 741 return; 742 } 743 744 if (!kref_get_unless_zero(&sess->sess_kref)) { 745 ql_dbg(ql_dbg_disc, vha, 0x2107, 746 "%s: kref_get fail sess %8phC \n", 747 __func__, sess->port_name); 748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 749 return; 750 } 751 752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 753 "qla_target(%u): %ssession for port %8phC " 754 "(loop ID %d) reappeared\n", vha->vp_idx, 755 sess->local ? "local " : "", sess->port_name, sess->loop_id); 756 757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 758 "Reappeared sess %p\n", sess); 759 760 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 761 fcport->loop_id, 762 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 763 } 764 765 if (sess && sess->local) { 766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 767 "qla_target(%u): local session for " 768 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 769 fcport->port_name, sess->loop_id); 770 sess->local = 0; 771 } 772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 773 774 ha->tgt.tgt_ops->put_sess(sess); 775 } 776 777 /* 778 * This is a zero-base ref-counting solution, since hardware_lock 779 * guarantees that ref_count is not modified concurrently. 780 * Upon successful return content of iocb is undefined 781 */ 782 static struct qlt_plogi_ack_t * 783 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 784 struct imm_ntfy_from_isp *iocb) 785 { 786 struct qlt_plogi_ack_t *pla; 787 788 lockdep_assert_held(&vha->hw->hardware_lock); 789 790 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 791 if (pla->id.b24 == id->b24) { 792 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 793 "%s %d %8phC Term INOT due to new INOT", 794 __func__, __LINE__, 795 pla->iocb.u.isp24.port_name); 796 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 798 return pla; 799 } 800 } 801 802 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 803 if (!pla) { 804 ql_dbg(ql_dbg_async, vha, 0x5088, 805 "qla_target(%d): Allocation of plogi_ack failed\n", 806 vha->vp_idx); 807 return NULL; 808 } 809 810 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 811 pla->id = *id; 812 list_add_tail(&pla->list, &vha->plogi_ack_list); 813 814 return pla; 815 } 816 817 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 818 struct qlt_plogi_ack_t *pla) 819 { 820 struct imm_ntfy_from_isp *iocb = &pla->iocb; 821 port_id_t port_id; 822 uint16_t loop_id; 823 fc_port_t *fcport = pla->fcport; 824 825 BUG_ON(!pla->ref_count); 826 pla->ref_count--; 827 828 if (pla->ref_count) 829 return; 830 831 ql_dbg(ql_dbg_disc, vha, 0x5089, 832 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 833 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 834 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 835 iocb->u.isp24.port_id[0], 836 le16_to_cpu(iocb->u.isp24.nport_handle), 837 iocb->u.isp24.exchange_address, iocb->ox_id); 838 839 port_id.b.domain = iocb->u.isp24.port_id[2]; 840 port_id.b.area = iocb->u.isp24.port_id[1]; 841 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 842 port_id.b.rsvd_1 = 0; 843 844 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 845 846 fcport->loop_id = loop_id; 847 fcport->d_id = port_id; 848 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 849 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 850 else 851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 852 853 list_for_each_entry(fcport, &vha->vp_fcports, list) { 854 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 855 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 856 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 857 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 858 } 859 860 list_del(&pla->list); 861 kmem_cache_free(qla_tgt_plogi_cachep, pla); 862 } 863 864 void 865 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 866 struct fc_port *sess, enum qlt_plogi_link_t link) 867 { 868 struct imm_ntfy_from_isp *iocb = &pla->iocb; 869 /* Inc ref_count first because link might already be pointing at pla */ 870 pla->ref_count++; 871 872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 873 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 874 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 875 sess, link, sess->port_name, 876 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 878 pla->ref_count, pla, link); 879 880 if (link == QLT_PLOGI_LINK_CONFLICT) { 881 switch (sess->disc_state) { 882 case DSC_DELETED: 883 case DSC_DELETE_PEND: 884 pla->ref_count--; 885 return; 886 default: 887 break; 888 } 889 } 890 891 if (sess->plogi_link[link]) 892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 893 894 if (link == QLT_PLOGI_LINK_SAME_WWN) 895 pla->fcport = sess; 896 897 sess->plogi_link[link] = pla; 898 } 899 900 typedef struct { 901 /* These fields must be initialized by the caller */ 902 port_id_t id; 903 /* 904 * number of cmds dropped while we were waiting for 905 * initiator to ack LOGO initialize to 1 if LOGO is 906 * triggered by a command, otherwise, to 0 907 */ 908 int cmd_count; 909 910 /* These fields are used by callee */ 911 struct list_head list; 912 } qlt_port_logo_t; 913 914 static void 915 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 916 { 917 qlt_port_logo_t *tmp; 918 int res; 919 920 mutex_lock(&vha->vha_tgt.tgt_mutex); 921 922 list_for_each_entry(tmp, &vha->logo_list, list) { 923 if (tmp->id.b24 == logo->id.b24) { 924 tmp->cmd_count += logo->cmd_count; 925 mutex_unlock(&vha->vha_tgt.tgt_mutex); 926 return; 927 } 928 } 929 930 list_add_tail(&logo->list, &vha->logo_list); 931 932 mutex_unlock(&vha->vha_tgt.tgt_mutex); 933 934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 935 936 mutex_lock(&vha->vha_tgt.tgt_mutex); 937 list_del(&logo->list); 938 mutex_unlock(&vha->vha_tgt.tgt_mutex); 939 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 943 logo->cmd_count, res); 944 } 945 946 void qlt_free_session_done(struct work_struct *work) 947 { 948 struct fc_port *sess = container_of(work, struct fc_port, 949 free_work); 950 struct qla_tgt *tgt = sess->tgt; 951 struct scsi_qla_host *vha = sess->vha; 952 struct qla_hw_data *ha = vha->hw; 953 unsigned long flags; 954 bool logout_started = false; 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 956 struct qlt_plogi_ack_t *own = 957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 958 959 ql_dbg(ql_dbg_disc, vha, 0xf084, 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 964 sess->logout_on_delete, sess->keep_nport_handle, 965 sess->send_els_logo); 966 967 if (!IS_SW_RESV_ADDR(sess->d_id)) { 968 qla2x00_mark_device_lost(vha, sess, 0); 969 970 if (sess->send_els_logo) { 971 qlt_port_logo_t logo; 972 973 logo.id = sess->d_id; 974 logo.cmd_count = 0; 975 if (!own) 976 qlt_send_first_logo(vha, &logo); 977 sess->send_els_logo = 0; 978 } 979 980 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 981 int rc; 982 983 if (!own || 984 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 985 rc = qla2x00_post_async_logout_work(vha, sess, 986 NULL); 987 if (rc != QLA_SUCCESS) 988 ql_log(ql_log_warn, vha, 0xf085, 989 "Schedule logo failed sess %p rc %d\n", 990 sess, rc); 991 else 992 logout_started = true; 993 } else if (own && (own->iocb.u.isp24.status_subcode == 994 ELS_PRLI) && ha->flags.rida_fmt2) { 995 rc = qla2x00_post_async_prlo_work(vha, sess, 996 NULL); 997 if (rc != QLA_SUCCESS) 998 ql_log(ql_log_warn, vha, 0xf085, 999 "Schedule PRLO failed sess %p rc %d\n", 1000 sess, rc); 1001 else 1002 logout_started = true; 1003 } 1004 } /* if sess->logout_on_delete */ 1005 1006 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1007 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1008 sess->nvme_flag |= NVME_FLAG_DELETING; 1009 qla_nvme_unregister_remote_port(sess); 1010 } 1011 } 1012 1013 /* 1014 * Release the target session for FC Nexus from fabric module code. 1015 */ 1016 if (sess->se_sess != NULL) 1017 ha->tgt.tgt_ops->free_session(sess); 1018 1019 if (logout_started) { 1020 bool traced = false; 1021 u16 cnt = 0; 1022 1023 while (!READ_ONCE(sess->logout_completed)) { 1024 if (!traced) { 1025 ql_dbg(ql_dbg_disc, vha, 0xf086, 1026 "%s: waiting for sess %p logout\n", 1027 __func__, sess); 1028 traced = true; 1029 } 1030 msleep(100); 1031 cnt++; 1032 if (cnt > 200) 1033 break; 1034 } 1035 1036 ql_dbg(ql_dbg_disc, vha, 0xf087, 1037 "%s: sess %p logout completed\n", __func__, sess); 1038 } 1039 1040 if (sess->logo_ack_needed) { 1041 sess->logo_ack_needed = 0; 1042 qla24xx_async_notify_ack(vha, sess, 1043 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1044 } 1045 1046 spin_lock_irqsave(&vha->work_lock, flags); 1047 sess->flags &= ~FCF_ASYNC_SENT; 1048 spin_unlock_irqrestore(&vha->work_lock, flags); 1049 1050 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1051 if (sess->se_sess) { 1052 sess->se_sess = NULL; 1053 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1054 tgt->sess_count--; 1055 } 1056 1057 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1058 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1059 sess->deleted = QLA_SESS_DELETED; 1060 1061 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1062 vha->fcport_count--; 1063 sess->login_succ = 0; 1064 } 1065 1066 qla2x00_clear_loop_id(sess); 1067 1068 if (sess->conflict) { 1069 sess->conflict->login_pause = 0; 1070 sess->conflict = NULL; 1071 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1072 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1073 } 1074 1075 { 1076 struct qlt_plogi_ack_t *con = 1077 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1078 struct imm_ntfy_from_isp *iocb; 1079 1080 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1081 1082 if (con) { 1083 iocb = &con->iocb; 1084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1085 "se_sess %p / sess %p port %8phC is gone," 1086 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1087 sess->se_sess, sess, sess->port_name, 1088 own ? "releasing own PLOGI" : "no own PLOGI pending", 1089 own ? own->ref_count : -1, 1090 iocb->u.isp24.port_name, con->ref_count); 1091 qlt_plogi_ack_unref(vha, con); 1092 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1093 } else { 1094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1095 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1096 sess->se_sess, sess, sess->port_name, 1097 own ? "releasing own PLOGI" : 1098 "no own PLOGI pending", 1099 own ? own->ref_count : -1); 1100 } 1101 1102 if (own) { 1103 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1104 qlt_plogi_ack_unref(vha, own); 1105 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1106 } 1107 } 1108 1109 sess->explicit_logout = 0; 1110 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1111 sess->free_pending = 0; 1112 1113 qla2x00_dfs_remove_rport(vha, sess); 1114 1115 ql_dbg(ql_dbg_disc, vha, 0xf001, 1116 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1117 sess, sess->port_name, vha->fcport_count); 1118 1119 if (tgt && (tgt->sess_count == 0)) 1120 wake_up_all(&tgt->waitQ); 1121 1122 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1123 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1124 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1125 switch (vha->host->active_mode) { 1126 case MODE_INITIATOR: 1127 case MODE_DUAL: 1128 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1129 qla2xxx_wake_dpc(vha); 1130 break; 1131 case MODE_TARGET: 1132 default: 1133 /* no-op */ 1134 break; 1135 } 1136 } 1137 1138 if (vha->fcport_count == 0) 1139 wake_up_all(&vha->fcport_waitQ); 1140 } 1141 1142 /* ha->tgt.sess_lock supposed to be held on entry */ 1143 void qlt_unreg_sess(struct fc_port *sess) 1144 { 1145 struct scsi_qla_host *vha = sess->vha; 1146 unsigned long flags; 1147 1148 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1149 "%s sess %p for deletion %8phC\n", 1150 __func__, sess, sess->port_name); 1151 1152 spin_lock_irqsave(&sess->vha->work_lock, flags); 1153 if (sess->free_pending) { 1154 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1155 return; 1156 } 1157 sess->free_pending = 1; 1158 /* 1159 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1160 * management from being sent. 1161 */ 1162 sess->flags |= FCF_ASYNC_SENT; 1163 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1164 1165 if (sess->se_sess) 1166 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1167 1168 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1169 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1170 sess->last_rscn_gen = sess->rscn_gen; 1171 sess->last_login_gen = sess->login_gen; 1172 1173 queue_work(sess->vha->hw->wq, &sess->free_work); 1174 } 1175 EXPORT_SYMBOL(qlt_unreg_sess); 1176 1177 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1178 { 1179 struct qla_hw_data *ha = vha->hw; 1180 struct fc_port *sess = NULL; 1181 uint16_t loop_id; 1182 int res = 0; 1183 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1184 unsigned long flags; 1185 1186 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1187 if (loop_id == 0xFFFF) { 1188 /* Global event */ 1189 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1190 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1191 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1192 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1193 } else { 1194 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1195 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1196 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1197 } 1198 1199 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1200 "Using sess for qla_tgt_reset: %p\n", sess); 1201 if (!sess) { 1202 res = -ESRCH; 1203 return res; 1204 } 1205 1206 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1207 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1208 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1209 mcmd, loop_id); 1210 1211 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1212 } 1213 1214 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1215 { 1216 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1217 sess->logout_on_delete = 0; 1218 sess->logo_ack_needed = 0; 1219 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1220 } 1221 } 1222 1223 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1224 { 1225 struct qla_tgt *tgt = sess->tgt; 1226 unsigned long flags; 1227 u16 sec; 1228 1229 switch (sess->disc_state) { 1230 case DSC_DELETE_PEND: 1231 return; 1232 case DSC_DELETED: 1233 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1234 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1235 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1236 wake_up_all(&tgt->waitQ); 1237 1238 if (sess->vha->fcport_count == 0) 1239 wake_up_all(&sess->vha->fcport_waitQ); 1240 return; 1241 } 1242 break; 1243 case DSC_UPD_FCPORT: 1244 /* 1245 * This port is not done reporting to upper layer. 1246 * let it finish 1247 */ 1248 sess->next_disc_state = DSC_DELETE_PEND; 1249 sec = jiffies_to_msecs(jiffies - 1250 sess->jiffies_at_registration)/1000; 1251 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1252 sess->sec_since_registration = sec; 1253 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1254 "%s %8phC : Slow Rport registration(%d Sec)\n", 1255 __func__, sess->port_name, sec); 1256 } 1257 return; 1258 default: 1259 break; 1260 } 1261 1262 spin_lock_irqsave(&sess->vha->work_lock, flags); 1263 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1264 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1265 return; 1266 } 1267 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1268 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1269 1270 sess->prli_pend_timer = 0; 1271 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1272 1273 qla24xx_chk_fcp_state(sess); 1274 1275 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1276 "Scheduling sess %p for deletion %8phC\n", 1277 sess, sess->port_name); 1278 1279 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1280 } 1281 1282 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1283 { 1284 struct fc_port *sess; 1285 scsi_qla_host_t *vha = tgt->vha; 1286 1287 list_for_each_entry(sess, &vha->vp_fcports, list) { 1288 if (sess->se_sess) 1289 qlt_schedule_sess_for_deletion(sess); 1290 } 1291 1292 /* At this point tgt could be already dead */ 1293 } 1294 1295 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1296 uint16_t *loop_id) 1297 { 1298 struct qla_hw_data *ha = vha->hw; 1299 dma_addr_t gid_list_dma; 1300 struct gid_list_info *gid_list, *gid; 1301 int res, rc, i; 1302 uint16_t entries; 1303 1304 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1305 &gid_list_dma, GFP_KERNEL); 1306 if (!gid_list) { 1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1308 "qla_target(%d): DMA Alloc failed of %u\n", 1309 vha->vp_idx, qla2x00_gid_list_size(ha)); 1310 return -ENOMEM; 1311 } 1312 1313 /* Get list of logged in devices */ 1314 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1315 if (rc != QLA_SUCCESS) { 1316 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1317 "qla_target(%d): get_id_list() failed: %x\n", 1318 vha->vp_idx, rc); 1319 res = -EBUSY; 1320 goto out_free_id_list; 1321 } 1322 1323 gid = gid_list; 1324 res = -ENOENT; 1325 for (i = 0; i < entries; i++) { 1326 if (gid->al_pa == s_id.al_pa && 1327 gid->area == s_id.area && 1328 gid->domain == s_id.domain) { 1329 *loop_id = le16_to_cpu(gid->loop_id); 1330 res = 0; 1331 break; 1332 } 1333 gid = (void *)gid + ha->gid_list_info_size; 1334 } 1335 1336 out_free_id_list: 1337 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1338 gid_list, gid_list_dma); 1339 return res; 1340 } 1341 1342 /* 1343 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1344 * Caller must put it. 1345 */ 1346 static struct fc_port *qlt_create_sess( 1347 struct scsi_qla_host *vha, 1348 fc_port_t *fcport, 1349 bool local) 1350 { 1351 struct qla_hw_data *ha = vha->hw; 1352 struct fc_port *sess = fcport; 1353 unsigned long flags; 1354 1355 if (vha->vha_tgt.qla_tgt->tgt_stop) 1356 return NULL; 1357 1358 if (fcport->se_sess) { 1359 if (!kref_get_unless_zero(&sess->sess_kref)) { 1360 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1361 "%s: kref_get_unless_zero failed for %8phC\n", 1362 __func__, sess->port_name); 1363 return NULL; 1364 } 1365 return fcport; 1366 } 1367 sess->tgt = vha->vha_tgt.qla_tgt; 1368 sess->local = local; 1369 1370 /* 1371 * Under normal circumstances we want to logout from firmware when 1372 * session eventually ends and release corresponding nport handle. 1373 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1374 * code will adjust these flags as necessary. 1375 */ 1376 sess->logout_on_delete = 1; 1377 sess->keep_nport_handle = 0; 1378 sess->logout_completed = 0; 1379 1380 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1381 &fcport->port_name[0], sess) < 0) { 1382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1383 "(%d) %8phC check_initiator_node_acl failed\n", 1384 vha->vp_idx, fcport->port_name); 1385 return NULL; 1386 } else { 1387 kref_init(&fcport->sess_kref); 1388 /* 1389 * Take an extra reference to ->sess_kref here to handle 1390 * fc_port access across ->tgt.sess_lock reaquire. 1391 */ 1392 if (!kref_get_unless_zero(&sess->sess_kref)) { 1393 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1394 "%s: kref_get_unless_zero failed for %8phC\n", 1395 __func__, sess->port_name); 1396 return NULL; 1397 } 1398 1399 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1400 if (!IS_SW_RESV_ADDR(sess->d_id)) 1401 vha->vha_tgt.qla_tgt->sess_count++; 1402 1403 qlt_do_generation_tick(vha, &sess->generation); 1404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1405 } 1406 1407 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1408 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1409 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1410 vha->vha_tgt.qla_tgt->sess_count); 1411 1412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1413 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1414 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1415 vha->vp_idx, local ? "local " : "", fcport->port_name, 1416 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1417 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1418 1419 return sess; 1420 } 1421 1422 /* 1423 * max_gen - specifies maximum session generation 1424 * at which this deletion requestion is still valid 1425 */ 1426 void 1427 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1428 { 1429 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1430 struct fc_port *sess = fcport; 1431 unsigned long flags; 1432 1433 if (!vha->hw->tgt.tgt_ops) 1434 return; 1435 1436 if (!tgt) 1437 return; 1438 1439 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1440 if (tgt->tgt_stop) { 1441 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1442 return; 1443 } 1444 if (!sess->se_sess) { 1445 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1446 return; 1447 } 1448 1449 if (max_gen - sess->generation < 0) { 1450 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1452 "Ignoring stale deletion request for se_sess %p / sess %p" 1453 " for port %8phC, req_gen %d, sess_gen %d\n", 1454 sess->se_sess, sess, sess->port_name, max_gen, 1455 sess->generation); 1456 return; 1457 } 1458 1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1460 1461 sess->local = 1; 1462 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1463 qlt_schedule_sess_for_deletion(sess); 1464 } 1465 1466 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1467 { 1468 struct qla_hw_data *ha = tgt->ha; 1469 unsigned long flags; 1470 int res; 1471 /* 1472 * We need to protect against race, when tgt is freed before or 1473 * inside wake_up() 1474 */ 1475 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1476 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1477 "tgt %p, sess_count=%d\n", 1478 tgt, tgt->sess_count); 1479 res = (tgt->sess_count == 0); 1480 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1481 1482 return res; 1483 } 1484 1485 /* Called by tcm_qla2xxx configfs code */ 1486 int qlt_stop_phase1(struct qla_tgt *tgt) 1487 { 1488 struct scsi_qla_host *vha = tgt->vha; 1489 struct qla_hw_data *ha = tgt->ha; 1490 unsigned long flags; 1491 1492 mutex_lock(&ha->optrom_mutex); 1493 mutex_lock(&qla_tgt_mutex); 1494 1495 if (tgt->tgt_stop || tgt->tgt_stopped) { 1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1497 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1498 mutex_unlock(&qla_tgt_mutex); 1499 mutex_unlock(&ha->optrom_mutex); 1500 return -EPERM; 1501 } 1502 1503 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1504 vha->host_no, vha); 1505 /* 1506 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1507 * Lock is needed, because we still can get an incoming packet. 1508 */ 1509 mutex_lock(&vha->vha_tgt.tgt_mutex); 1510 tgt->tgt_stop = 1; 1511 qlt_clear_tgt_db(tgt); 1512 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1513 mutex_unlock(&qla_tgt_mutex); 1514 1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1516 "Waiting for sess works (tgt %p)", tgt); 1517 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1518 while (!list_empty(&tgt->sess_works_list)) { 1519 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1520 flush_scheduled_work(); 1521 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1522 } 1523 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1524 1525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1526 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1527 1528 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1529 1530 /* Big hammer */ 1531 if (!ha->flags.host_shutting_down && 1532 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1533 qlt_disable_vha(vha); 1534 1535 /* Wait for sessions to clear out (just in case) */ 1536 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1537 mutex_unlock(&ha->optrom_mutex); 1538 1539 return 0; 1540 } 1541 EXPORT_SYMBOL(qlt_stop_phase1); 1542 1543 /* Called by tcm_qla2xxx configfs code */ 1544 void qlt_stop_phase2(struct qla_tgt *tgt) 1545 { 1546 scsi_qla_host_t *vha = tgt->vha; 1547 1548 if (tgt->tgt_stopped) { 1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1550 "Already in tgt->tgt_stopped state\n"); 1551 dump_stack(); 1552 return; 1553 } 1554 if (!tgt->tgt_stop) { 1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1556 "%s: phase1 stop is not completed\n", __func__); 1557 dump_stack(); 1558 return; 1559 } 1560 1561 mutex_lock(&vha->vha_tgt.tgt_mutex); 1562 tgt->tgt_stop = 0; 1563 tgt->tgt_stopped = 1; 1564 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1565 1566 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1567 tgt); 1568 1569 switch (vha->qlini_mode) { 1570 case QLA2XXX_INI_MODE_EXCLUSIVE: 1571 vha->flags.online = 1; 1572 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1573 break; 1574 default: 1575 break; 1576 } 1577 } 1578 EXPORT_SYMBOL(qlt_stop_phase2); 1579 1580 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1581 static void qlt_release(struct qla_tgt *tgt) 1582 { 1583 scsi_qla_host_t *vha = tgt->vha; 1584 void *node; 1585 u64 key = 0; 1586 u16 i; 1587 struct qla_qpair_hint *h; 1588 struct qla_hw_data *ha = vha->hw; 1589 1590 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1591 qlt_stop_phase1(tgt); 1592 1593 if (!tgt->tgt_stopped) 1594 qlt_stop_phase2(tgt); 1595 1596 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1597 unsigned long flags; 1598 1599 h = &tgt->qphints[i]; 1600 if (h->qpair) { 1601 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1602 list_del(&h->hint_elem); 1603 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1604 h->qpair = NULL; 1605 } 1606 } 1607 kfree(tgt->qphints); 1608 mutex_lock(&qla_tgt_mutex); 1609 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1610 mutex_unlock(&qla_tgt_mutex); 1611 1612 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1613 btree_remove64(&tgt->lun_qpair_map, key); 1614 1615 btree_destroy64(&tgt->lun_qpair_map); 1616 1617 if (vha->vp_idx) 1618 if (ha->tgt.tgt_ops && 1619 ha->tgt.tgt_ops->remove_target && 1620 vha->vha_tgt.target_lport_ptr) 1621 ha->tgt.tgt_ops->remove_target(vha); 1622 1623 vha->vha_tgt.qla_tgt = NULL; 1624 1625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1626 "Release of tgt %p finished\n", tgt); 1627 1628 kfree(tgt); 1629 } 1630 1631 /* ha->hardware_lock supposed to be held on entry */ 1632 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1633 const void *param, unsigned int param_size) 1634 { 1635 struct qla_tgt_sess_work_param *prm; 1636 unsigned long flags; 1637 1638 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1639 if (!prm) { 1640 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1641 "qla_target(%d): Unable to create session " 1642 "work, command will be refused", 0); 1643 return -ENOMEM; 1644 } 1645 1646 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1647 "Scheduling work (type %d, prm %p)" 1648 " to find session for param %p (size %d, tgt %p)\n", 1649 type, prm, param, param_size, tgt); 1650 1651 prm->type = type; 1652 memcpy(&prm->tm_iocb, param, param_size); 1653 1654 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1655 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1656 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1657 1658 schedule_work(&tgt->sess_work); 1659 1660 return 0; 1661 } 1662 1663 /* 1664 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1665 */ 1666 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1667 struct imm_ntfy_from_isp *ntfy, 1668 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1669 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1670 { 1671 struct scsi_qla_host *vha = qpair->vha; 1672 struct qla_hw_data *ha = vha->hw; 1673 request_t *pkt; 1674 struct nack_to_isp *nack; 1675 1676 if (!ha->flags.fw_started) 1677 return; 1678 1679 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1680 1681 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1682 if (!pkt) { 1683 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1684 "qla_target(%d): %s failed: unable to allocate " 1685 "request packet\n", vha->vp_idx, __func__); 1686 return; 1687 } 1688 1689 if (vha->vha_tgt.qla_tgt != NULL) 1690 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1691 1692 pkt->entry_type = NOTIFY_ACK_TYPE; 1693 pkt->entry_count = 1; 1694 1695 nack = (struct nack_to_isp *)pkt; 1696 nack->ox_id = ntfy->ox_id; 1697 1698 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1699 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1700 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1701 nack->u.isp24.flags = ntfy->u.isp24.flags & 1702 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1703 } 1704 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1705 nack->u.isp24.status = ntfy->u.isp24.status; 1706 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1707 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1708 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1709 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1710 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1711 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1712 nack->u.isp24.srr_reject_code = srr_reject_code; 1713 nack->u.isp24.srr_reject_code_expl = srr_explan; 1714 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1715 1716 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1717 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1718 vha->vp_idx, nack->u.isp24.status); 1719 1720 /* Memory Barrier */ 1721 wmb(); 1722 qla2x00_start_iocbs(vha, qpair->req); 1723 } 1724 1725 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1726 { 1727 struct scsi_qla_host *vha = mcmd->vha; 1728 struct qla_hw_data *ha = vha->hw; 1729 struct abts_resp_to_24xx *resp; 1730 __le32 f_ctl; 1731 uint32_t h; 1732 uint8_t *p; 1733 int rc; 1734 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1735 struct qla_qpair *qpair = mcmd->qpair; 1736 1737 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1738 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1739 ha, mcmd->fc_tm_rsp); 1740 1741 rc = qlt_check_reserve_free_req(qpair, 1); 1742 if (rc) { 1743 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1744 "qla_target(%d): %s failed: unable to allocate request packet\n", 1745 vha->vp_idx, __func__); 1746 return -EAGAIN; 1747 } 1748 1749 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1750 memset(resp, 0, sizeof(*resp)); 1751 1752 h = qlt_make_handle(qpair); 1753 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1754 /* 1755 * CTIO type 7 from the firmware doesn't provide a way to 1756 * know the initiator's LOOP ID, hence we can't find 1757 * the session and, so, the command. 1758 */ 1759 return -EAGAIN; 1760 } else { 1761 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1762 } 1763 1764 resp->handle = make_handle(qpair->req->id, h); 1765 resp->entry_type = ABTS_RESP_24XX; 1766 resp->entry_count = 1; 1767 resp->nport_handle = abts->nport_handle; 1768 resp->vp_index = vha->vp_idx; 1769 resp->sof_type = abts->sof_type; 1770 resp->exchange_address = abts->exchange_address; 1771 resp->fcp_hdr_le = abts->fcp_hdr_le; 1772 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1773 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1774 F_CTL_SEQ_INITIATIVE); 1775 p = (uint8_t *)&f_ctl; 1776 resp->fcp_hdr_le.f_ctl[0] = *p++; 1777 resp->fcp_hdr_le.f_ctl[1] = *p++; 1778 resp->fcp_hdr_le.f_ctl[2] = *p; 1779 1780 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1781 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1782 1783 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1784 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1785 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1786 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1787 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1788 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1789 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1790 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1791 } else { 1792 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1793 resp->payload.ba_rjt.reason_code = 1794 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1795 /* Other bytes are zero */ 1796 } 1797 1798 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1799 1800 /* Memory Barrier */ 1801 wmb(); 1802 if (qpair->reqq_start_iocbs) 1803 qpair->reqq_start_iocbs(qpair); 1804 else 1805 qla2x00_start_iocbs(vha, qpair->req); 1806 1807 return rc; 1808 } 1809 1810 /* 1811 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1812 */ 1813 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1814 struct abts_recv_from_24xx *abts, uint32_t status, 1815 bool ids_reversed) 1816 { 1817 struct scsi_qla_host *vha = qpair->vha; 1818 struct qla_hw_data *ha = vha->hw; 1819 struct abts_resp_to_24xx *resp; 1820 __le32 f_ctl; 1821 uint8_t *p; 1822 1823 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1824 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1825 ha, abts, status); 1826 1827 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1828 NULL); 1829 if (!resp) { 1830 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1831 "qla_target(%d): %s failed: unable to allocate " 1832 "request packet", vha->vp_idx, __func__); 1833 return; 1834 } 1835 1836 resp->entry_type = ABTS_RESP_24XX; 1837 resp->handle = QLA_TGT_SKIP_HANDLE; 1838 resp->entry_count = 1; 1839 resp->nport_handle = abts->nport_handle; 1840 resp->vp_index = vha->vp_idx; 1841 resp->sof_type = abts->sof_type; 1842 resp->exchange_address = abts->exchange_address; 1843 resp->fcp_hdr_le = abts->fcp_hdr_le; 1844 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1845 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1846 F_CTL_SEQ_INITIATIVE); 1847 p = (uint8_t *)&f_ctl; 1848 resp->fcp_hdr_le.f_ctl[0] = *p++; 1849 resp->fcp_hdr_le.f_ctl[1] = *p++; 1850 resp->fcp_hdr_le.f_ctl[2] = *p; 1851 if (ids_reversed) { 1852 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1853 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1854 } else { 1855 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1856 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1857 } 1858 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1859 if (status == FCP_TMF_CMPL) { 1860 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1861 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1862 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1863 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1864 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1865 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1866 } else { 1867 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1868 resp->payload.ba_rjt.reason_code = 1869 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1870 /* Other bytes are zero */ 1871 } 1872 1873 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1874 1875 /* Memory Barrier */ 1876 wmb(); 1877 if (qpair->reqq_start_iocbs) 1878 qpair->reqq_start_iocbs(qpair); 1879 else 1880 qla2x00_start_iocbs(vha, qpair->req); 1881 } 1882 1883 /* 1884 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1885 */ 1886 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1887 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1888 { 1889 struct ctio7_to_24xx *ctio; 1890 u16 tmp; 1891 struct abts_recv_from_24xx *entry; 1892 1893 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1894 if (ctio == NULL) { 1895 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1896 "qla_target(%d): %s failed: unable to allocate " 1897 "request packet\n", vha->vp_idx, __func__); 1898 return; 1899 } 1900 1901 if (mcmd) 1902 /* abts from remote port */ 1903 entry = &mcmd->orig_iocb.abts; 1904 else 1905 /* abts from this driver. */ 1906 entry = (struct abts_recv_from_24xx *)pkt; 1907 1908 /* 1909 * We've got on entrance firmware's response on by us generated 1910 * ABTS response. So, in it ID fields are reversed. 1911 */ 1912 1913 ctio->entry_type = CTIO_TYPE7; 1914 ctio->entry_count = 1; 1915 ctio->nport_handle = entry->nport_handle; 1916 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1917 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1918 ctio->vp_index = vha->vp_idx; 1919 ctio->exchange_addr = entry->exchange_addr_to_abort; 1920 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1921 1922 if (mcmd) { 1923 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1924 1925 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1926 tmp |= (mcmd->abort_io_attr << 9); 1927 else if (qpair->retry_term_cnt & 1) 1928 tmp |= (0x4 << 9); 1929 } else { 1930 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1931 1932 if (qpair->retry_term_cnt & 1) 1933 tmp |= (0x4 << 9); 1934 } 1935 ctio->u.status1.flags = cpu_to_le16(tmp); 1936 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1937 1938 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1939 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1940 le16_to_cpu(ctio->u.status1.flags), 1941 le16_to_cpu(ctio->u.status1.ox_id), 1942 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1943 1944 /* Memory Barrier */ 1945 wmb(); 1946 if (qpair->reqq_start_iocbs) 1947 qpair->reqq_start_iocbs(qpair); 1948 else 1949 qla2x00_start_iocbs(vha, qpair->req); 1950 1951 if (mcmd) 1952 qlt_build_abts_resp_iocb(mcmd); 1953 else 1954 qlt_24xx_send_abts_resp(qpair, 1955 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1956 1957 } 1958 1959 /* drop cmds for the given lun 1960 * XXX only looks for cmds on the port through which lun reset was recieved 1961 * XXX does not go through the list of other port (which may have cmds 1962 * for the same lun) 1963 */ 1964 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1965 { 1966 struct qla_tgt_sess_op *op; 1967 struct qla_tgt_cmd *cmd; 1968 uint32_t key; 1969 unsigned long flags; 1970 1971 key = sid_to_key(s_id); 1972 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1973 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1974 uint32_t op_key; 1975 u64 op_lun; 1976 1977 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1978 op_lun = scsilun_to_int( 1979 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1980 if (op_key == key && op_lun == lun) 1981 op->aborted = true; 1982 } 1983 1984 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1985 uint32_t op_key; 1986 u64 op_lun; 1987 1988 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1989 op_lun = scsilun_to_int( 1990 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1991 if (op_key == key && op_lun == lun) 1992 op->aborted = true; 1993 } 1994 1995 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1996 uint32_t cmd_key; 1997 u64 cmd_lun; 1998 1999 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2000 cmd_lun = scsilun_to_int( 2001 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2002 if (cmd_key == key && cmd_lun == lun) 2003 cmd->aborted = 1; 2004 } 2005 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2006 } 2007 2008 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2009 uint64_t unpacked_lun) 2010 { 2011 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2012 struct qla_qpair_hint *h = NULL; 2013 2014 if (vha->flags.qpairs_available) { 2015 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2016 if (!h) 2017 h = &tgt->qphints[0]; 2018 } else { 2019 h = &tgt->qphints[0]; 2020 } 2021 2022 return h; 2023 } 2024 2025 static void qlt_do_tmr_work(struct work_struct *work) 2026 { 2027 struct qla_tgt_mgmt_cmd *mcmd = 2028 container_of(work, struct qla_tgt_mgmt_cmd, work); 2029 struct qla_hw_data *ha = mcmd->vha->hw; 2030 int rc; 2031 uint32_t tag; 2032 unsigned long flags; 2033 2034 switch (mcmd->tmr_func) { 2035 case QLA_TGT_ABTS: 2036 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2037 break; 2038 default: 2039 tag = 0; 2040 break; 2041 } 2042 2043 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2044 mcmd->tmr_func, tag); 2045 2046 if (rc != 0) { 2047 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2048 switch (mcmd->tmr_func) { 2049 case QLA_TGT_ABTS: 2050 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2051 qlt_build_abts_resp_iocb(mcmd); 2052 break; 2053 case QLA_TGT_LUN_RESET: 2054 case QLA_TGT_CLEAR_TS: 2055 case QLA_TGT_ABORT_TS: 2056 case QLA_TGT_CLEAR_ACA: 2057 case QLA_TGT_TARGET_RESET: 2058 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2059 qla_sam_status); 2060 break; 2061 2062 case QLA_TGT_ABORT_ALL: 2063 case QLA_TGT_NEXUS_LOSS_SESS: 2064 case QLA_TGT_NEXUS_LOSS: 2065 qlt_send_notify_ack(mcmd->qpair, 2066 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2067 break; 2068 } 2069 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2070 2071 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2072 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2073 mcmd->vha->vp_idx, rc); 2074 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2075 } 2076 } 2077 2078 /* ha->hardware_lock supposed to be held on entry */ 2079 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2080 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2081 { 2082 struct qla_hw_data *ha = vha->hw; 2083 struct qla_tgt_mgmt_cmd *mcmd; 2084 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2085 struct qla_tgt_cmd *abort_cmd; 2086 2087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2088 "qla_target(%d): task abort (tag=%d)\n", 2089 vha->vp_idx, abts->exchange_addr_to_abort); 2090 2091 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2092 if (mcmd == NULL) { 2093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2094 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2095 vha->vp_idx, __func__); 2096 return -ENOMEM; 2097 } 2098 memset(mcmd, 0, sizeof(*mcmd)); 2099 mcmd->cmd_type = TYPE_TGT_TMCMD; 2100 mcmd->sess = sess; 2101 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2102 mcmd->reset_count = ha->base_qpair->chip_reset; 2103 mcmd->tmr_func = QLA_TGT_ABTS; 2104 mcmd->qpair = h->qpair; 2105 mcmd->vha = vha; 2106 2107 /* 2108 * LUN is looked up by target-core internally based on the passed 2109 * abts->exchange_addr_to_abort tag. 2110 */ 2111 mcmd->se_cmd.cpuid = h->cpuid; 2112 2113 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2114 le32_to_cpu(abts->exchange_addr_to_abort)); 2115 if (!abort_cmd) 2116 return -EIO; 2117 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2118 2119 if (abort_cmd->qpair) { 2120 mcmd->qpair = abort_cmd->qpair; 2121 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2122 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2123 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2124 } 2125 2126 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2127 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2128 2129 return 0; 2130 } 2131 2132 /* 2133 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2134 */ 2135 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2136 struct abts_recv_from_24xx *abts) 2137 { 2138 struct qla_hw_data *ha = vha->hw; 2139 struct fc_port *sess; 2140 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2141 be_id_t s_id; 2142 int rc; 2143 unsigned long flags; 2144 2145 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2147 "qla_target(%d): ABTS: Abort Sequence not " 2148 "supported\n", vha->vp_idx); 2149 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2150 false); 2151 return; 2152 } 2153 2154 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2156 "qla_target(%d): ABTS: Unknown Exchange " 2157 "Address received\n", vha->vp_idx); 2158 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2159 false); 2160 return; 2161 } 2162 2163 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2164 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2165 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2166 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2167 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2168 2169 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2170 2171 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2172 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2173 if (!sess) { 2174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2175 "qla_target(%d): task abort for non-existent session\n", 2176 vha->vp_idx); 2177 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2178 2179 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2180 false); 2181 return; 2182 } 2183 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2184 2185 2186 if (sess->deleted) { 2187 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2188 false); 2189 return; 2190 } 2191 2192 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2193 if (rc != 0) { 2194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2195 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2196 vha->vp_idx, rc); 2197 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2198 false); 2199 return; 2200 } 2201 } 2202 2203 /* 2204 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2205 */ 2206 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2207 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2208 { 2209 struct scsi_qla_host *ha = mcmd->vha; 2210 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2211 struct ctio7_to_24xx *ctio; 2212 uint16_t temp; 2213 2214 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2215 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2216 ha, atio, resp_code); 2217 2218 2219 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2220 if (ctio == NULL) { 2221 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2222 "qla_target(%d): %s failed: unable to allocate " 2223 "request packet\n", ha->vp_idx, __func__); 2224 return; 2225 } 2226 2227 ctio->entry_type = CTIO_TYPE7; 2228 ctio->entry_count = 1; 2229 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2230 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2231 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2232 ctio->vp_index = ha->vp_idx; 2233 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2234 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2235 temp = (atio->u.isp24.attr << 9)| 2236 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2237 ctio->u.status1.flags = cpu_to_le16(temp); 2238 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2239 ctio->u.status1.ox_id = cpu_to_le16(temp); 2240 ctio->u.status1.scsi_status = 2241 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2242 ctio->u.status1.response_len = cpu_to_le16(8); 2243 ctio->u.status1.sense_data[0] = resp_code; 2244 2245 /* Memory Barrier */ 2246 wmb(); 2247 if (qpair->reqq_start_iocbs) 2248 qpair->reqq_start_iocbs(qpair); 2249 else 2250 qla2x00_start_iocbs(ha, qpair->req); 2251 } 2252 2253 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2254 { 2255 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2256 } 2257 EXPORT_SYMBOL(qlt_free_mcmd); 2258 2259 /* 2260 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2261 * reacquire 2262 */ 2263 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2264 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2265 { 2266 struct atio_from_isp *atio = &cmd->atio; 2267 struct ctio7_to_24xx *ctio; 2268 uint16_t temp; 2269 struct scsi_qla_host *vha = cmd->vha; 2270 2271 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2272 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2273 "sense_key=%02x, asc=%02x, ascq=%02x", 2274 vha, atio, scsi_status, sense_key, asc, ascq); 2275 2276 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2277 if (!ctio) { 2278 ql_dbg(ql_dbg_async, vha, 0x3067, 2279 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2280 vha->host_no, __func__); 2281 goto out; 2282 } 2283 2284 ctio->entry_type = CTIO_TYPE7; 2285 ctio->entry_count = 1; 2286 ctio->handle = QLA_TGT_SKIP_HANDLE; 2287 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2288 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2289 ctio->vp_index = vha->vp_idx; 2290 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2291 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2292 temp = (atio->u.isp24.attr << 9) | 2293 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2294 ctio->u.status1.flags = cpu_to_le16(temp); 2295 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2296 ctio->u.status1.ox_id = cpu_to_le16(temp); 2297 ctio->u.status1.scsi_status = 2298 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2299 ctio->u.status1.response_len = cpu_to_le16(18); 2300 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2301 2302 if (ctio->u.status1.residual != 0) 2303 ctio->u.status1.scsi_status |= 2304 cpu_to_le16(SS_RESIDUAL_UNDER); 2305 2306 /* Fixed format sense data. */ 2307 ctio->u.status1.sense_data[0] = 0x70; 2308 ctio->u.status1.sense_data[2] = sense_key; 2309 /* Additional sense length */ 2310 ctio->u.status1.sense_data[7] = 0xa; 2311 /* ASC and ASCQ */ 2312 ctio->u.status1.sense_data[12] = asc; 2313 ctio->u.status1.sense_data[13] = ascq; 2314 2315 /* Memory Barrier */ 2316 wmb(); 2317 2318 if (qpair->reqq_start_iocbs) 2319 qpair->reqq_start_iocbs(qpair); 2320 else 2321 qla2x00_start_iocbs(vha, qpair->req); 2322 2323 out: 2324 return; 2325 } 2326 2327 /* callback from target fabric module code */ 2328 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2329 { 2330 struct scsi_qla_host *vha = mcmd->sess->vha; 2331 struct qla_hw_data *ha = vha->hw; 2332 unsigned long flags; 2333 struct qla_qpair *qpair = mcmd->qpair; 2334 bool free_mcmd = true; 2335 2336 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2337 "TM response mcmd (%p) status %#x state %#x", 2338 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2339 2340 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2341 2342 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2343 /* 2344 * Either the port is not online or this request was from 2345 * previous life, just abort the processing. 2346 */ 2347 ql_dbg(ql_dbg_async, vha, 0xe100, 2348 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2349 vha->flags.online, qla2x00_reset_active(vha), 2350 mcmd->reset_count, qpair->chip_reset); 2351 ha->tgt.tgt_ops->free_mcmd(mcmd); 2352 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2353 return; 2354 } 2355 2356 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2357 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2358 case ELS_LOGO: 2359 case ELS_PRLO: 2360 case ELS_TPRLO: 2361 ql_dbg(ql_dbg_disc, vha, 0x2106, 2362 "TM response logo %8phC status %#x state %#x", 2363 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2364 mcmd->flags); 2365 qlt_schedule_sess_for_deletion(mcmd->sess); 2366 break; 2367 default: 2368 qlt_send_notify_ack(vha->hw->base_qpair, 2369 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2370 break; 2371 } 2372 } else { 2373 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2374 qlt_build_abts_resp_iocb(mcmd); 2375 free_mcmd = false; 2376 } else 2377 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2378 mcmd->fc_tm_rsp); 2379 } 2380 /* 2381 * Make the callback for ->free_mcmd() to queue_work() and invoke 2382 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2383 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2384 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2385 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2386 * qlt_xmit_tm_rsp() returns here.. 2387 */ 2388 if (free_mcmd) 2389 ha->tgt.tgt_ops->free_mcmd(mcmd); 2390 2391 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2392 } 2393 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2394 2395 /* No locks */ 2396 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2397 { 2398 struct qla_tgt_cmd *cmd = prm->cmd; 2399 2400 BUG_ON(cmd->sg_cnt == 0); 2401 2402 prm->sg = (struct scatterlist *)cmd->sg; 2403 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2404 cmd->sg_cnt, cmd->dma_data_direction); 2405 if (unlikely(prm->seg_cnt == 0)) 2406 goto out_err; 2407 2408 prm->cmd->sg_mapped = 1; 2409 2410 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2411 /* 2412 * If greater than four sg entries then we need to allocate 2413 * the continuation entries 2414 */ 2415 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2416 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2417 QLA_TGT_DATASEGS_PER_CMD_24XX, 2418 QLA_TGT_DATASEGS_PER_CONT_24XX); 2419 } else { 2420 /* DIF */ 2421 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2422 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2423 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2424 prm->tot_dsds = prm->seg_cnt; 2425 } else 2426 prm->tot_dsds = prm->seg_cnt; 2427 2428 if (cmd->prot_sg_cnt) { 2429 prm->prot_sg = cmd->prot_sg; 2430 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2431 cmd->prot_sg, cmd->prot_sg_cnt, 2432 cmd->dma_data_direction); 2433 if (unlikely(prm->prot_seg_cnt == 0)) 2434 goto out_err; 2435 2436 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2437 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2438 /* Dif Bundling not support here */ 2439 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2440 cmd->blk_sz); 2441 prm->tot_dsds += prm->prot_seg_cnt; 2442 } else 2443 prm->tot_dsds += prm->prot_seg_cnt; 2444 } 2445 } 2446 2447 return 0; 2448 2449 out_err: 2450 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2451 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2452 0, prm->cmd->sg_cnt); 2453 return -1; 2454 } 2455 2456 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2457 { 2458 struct qla_hw_data *ha; 2459 struct qla_qpair *qpair; 2460 2461 if (!cmd->sg_mapped) 2462 return; 2463 2464 qpair = cmd->qpair; 2465 2466 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2467 cmd->dma_data_direction); 2468 cmd->sg_mapped = 0; 2469 2470 if (cmd->prot_sg_cnt) 2471 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2472 cmd->dma_data_direction); 2473 2474 if (!cmd->ctx) 2475 return; 2476 ha = vha->hw; 2477 if (cmd->ctx_dsd_alloced) 2478 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2479 2480 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2481 } 2482 2483 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2484 uint32_t req_cnt) 2485 { 2486 uint32_t cnt; 2487 struct req_que *req = qpair->req; 2488 2489 if (req->cnt < (req_cnt + 2)) { 2490 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2491 rd_reg_dword_relaxed(req->req_q_out)); 2492 2493 if (req->ring_index < cnt) 2494 req->cnt = cnt - req->ring_index; 2495 else 2496 req->cnt = req->length - (req->ring_index - cnt); 2497 2498 if (unlikely(req->cnt < (req_cnt + 2))) 2499 return -EAGAIN; 2500 } 2501 2502 req->cnt -= req_cnt; 2503 2504 return 0; 2505 } 2506 2507 /* 2508 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2509 */ 2510 static inline void *qlt_get_req_pkt(struct req_que *req) 2511 { 2512 /* Adjust ring index. */ 2513 req->ring_index++; 2514 if (req->ring_index == req->length) { 2515 req->ring_index = 0; 2516 req->ring_ptr = req->ring; 2517 } else { 2518 req->ring_ptr++; 2519 } 2520 return (cont_entry_t *)req->ring_ptr; 2521 } 2522 2523 /* ha->hardware_lock supposed to be held on entry */ 2524 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2525 { 2526 uint32_t h; 2527 int index; 2528 uint8_t found = 0; 2529 struct req_que *req = qpair->req; 2530 2531 h = req->current_outstanding_cmd; 2532 2533 for (index = 1; index < req->num_outstanding_cmds; index++) { 2534 h++; 2535 if (h == req->num_outstanding_cmds) 2536 h = 1; 2537 2538 if (h == QLA_TGT_SKIP_HANDLE) 2539 continue; 2540 2541 if (!req->outstanding_cmds[h]) { 2542 found = 1; 2543 break; 2544 } 2545 } 2546 2547 if (found) { 2548 req->current_outstanding_cmd = h; 2549 } else { 2550 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2551 "qla_target(%d): Ran out of empty cmd slots\n", 2552 qpair->vha->vp_idx); 2553 h = QLA_TGT_NULL_HANDLE; 2554 } 2555 2556 return h; 2557 } 2558 2559 /* ha->hardware_lock supposed to be held on entry */ 2560 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2561 struct qla_tgt_prm *prm) 2562 { 2563 uint32_t h; 2564 struct ctio7_to_24xx *pkt; 2565 struct atio_from_isp *atio = &prm->cmd->atio; 2566 uint16_t temp; 2567 2568 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2569 prm->pkt = pkt; 2570 memset(pkt, 0, sizeof(*pkt)); 2571 2572 pkt->entry_type = CTIO_TYPE7; 2573 pkt->entry_count = (uint8_t)prm->req_cnt; 2574 pkt->vp_index = prm->cmd->vp_idx; 2575 2576 h = qlt_make_handle(qpair); 2577 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2578 /* 2579 * CTIO type 7 from the firmware doesn't provide a way to 2580 * know the initiator's LOOP ID, hence we can't find 2581 * the session and, so, the command. 2582 */ 2583 return -EAGAIN; 2584 } else 2585 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2586 2587 pkt->handle = make_handle(qpair->req->id, h); 2588 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2589 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2590 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2591 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2592 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2593 temp = atio->u.isp24.attr << 9; 2594 pkt->u.status0.flags |= cpu_to_le16(temp); 2595 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2596 pkt->u.status0.ox_id = cpu_to_le16(temp); 2597 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2598 2599 return 0; 2600 } 2601 2602 /* 2603 * ha->hardware_lock supposed to be held on entry. We have already made sure 2604 * that there is sufficient amount of request entries to not drop it. 2605 */ 2606 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2607 { 2608 int cnt; 2609 struct dsd64 *cur_dsd; 2610 2611 /* Build continuation packets */ 2612 while (prm->seg_cnt > 0) { 2613 cont_a64_entry_t *cont_pkt64 = 2614 (cont_a64_entry_t *)qlt_get_req_pkt( 2615 prm->cmd->qpair->req); 2616 2617 /* 2618 * Make sure that from cont_pkt64 none of 2619 * 64-bit specific fields used for 32-bit 2620 * addressing. Cast to (cont_entry_t *) for 2621 * that. 2622 */ 2623 2624 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2625 2626 cont_pkt64->entry_count = 1; 2627 cont_pkt64->sys_define = 0; 2628 2629 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2630 cur_dsd = cont_pkt64->dsd; 2631 2632 /* Load continuation entry data segments */ 2633 for (cnt = 0; 2634 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2635 cnt++, prm->seg_cnt--) { 2636 append_dsd64(&cur_dsd, prm->sg); 2637 prm->sg = sg_next(prm->sg); 2638 } 2639 } 2640 } 2641 2642 /* 2643 * ha->hardware_lock supposed to be held on entry. We have already made sure 2644 * that there is sufficient amount of request entries to not drop it. 2645 */ 2646 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2647 { 2648 int cnt; 2649 struct dsd64 *cur_dsd; 2650 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2651 2652 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2653 2654 /* Setup packet address segment pointer */ 2655 cur_dsd = &pkt24->u.status0.dsd; 2656 2657 /* Set total data segment count */ 2658 if (prm->seg_cnt) 2659 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2660 2661 if (prm->seg_cnt == 0) { 2662 /* No data transfer */ 2663 cur_dsd->address = 0; 2664 cur_dsd->length = 0; 2665 return; 2666 } 2667 2668 /* If scatter gather */ 2669 2670 /* Load command entry data segments */ 2671 for (cnt = 0; 2672 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2673 cnt++, prm->seg_cnt--) { 2674 append_dsd64(&cur_dsd, prm->sg); 2675 prm->sg = sg_next(prm->sg); 2676 } 2677 2678 qlt_load_cont_data_segments(prm); 2679 } 2680 2681 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2682 { 2683 return cmd->bufflen > 0; 2684 } 2685 2686 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2687 { 2688 struct qla_tgt_cmd *cmd; 2689 struct scsi_qla_host *vha; 2690 2691 /* asc 0x10=dif error */ 2692 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2693 cmd = prm->cmd; 2694 vha = cmd->vha; 2695 /* ASCQ */ 2696 switch (prm->sense_buffer[13]) { 2697 case 1: 2698 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2699 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2700 "se_cmd=%p tag[%x]", 2701 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2702 cmd->atio.u.isp24.exchange_addr); 2703 break; 2704 case 2: 2705 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2706 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2707 "se_cmd=%p tag[%x]", 2708 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2709 cmd->atio.u.isp24.exchange_addr); 2710 break; 2711 case 3: 2712 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2713 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2714 "se_cmd=%p tag[%x]", 2715 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2716 cmd->atio.u.isp24.exchange_addr); 2717 break; 2718 default: 2719 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2720 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2721 "se_cmd=%p tag[%x]", 2722 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2723 cmd->atio.u.isp24.exchange_addr); 2724 break; 2725 } 2726 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2727 } 2728 } 2729 2730 /* 2731 * Called without ha->hardware_lock held 2732 */ 2733 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2734 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2735 uint32_t *full_req_cnt) 2736 { 2737 struct se_cmd *se_cmd = &cmd->se_cmd; 2738 struct qla_qpair *qpair = cmd->qpair; 2739 2740 prm->cmd = cmd; 2741 prm->tgt = cmd->tgt; 2742 prm->pkt = NULL; 2743 prm->rq_result = scsi_status; 2744 prm->sense_buffer = &cmd->sense_buffer[0]; 2745 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2746 prm->sg = NULL; 2747 prm->seg_cnt = -1; 2748 prm->req_cnt = 1; 2749 prm->residual = 0; 2750 prm->add_status_pkt = 0; 2751 prm->prot_sg = NULL; 2752 prm->prot_seg_cnt = 0; 2753 prm->tot_dsds = 0; 2754 2755 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2756 if (qlt_pci_map_calc_cnt(prm) != 0) 2757 return -EAGAIN; 2758 } 2759 2760 *full_req_cnt = prm->req_cnt; 2761 2762 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2763 prm->residual = se_cmd->residual_count; 2764 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2765 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2766 prm->residual, se_cmd->tag, 2767 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2768 cmd->bufflen, prm->rq_result); 2769 prm->rq_result |= SS_RESIDUAL_UNDER; 2770 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2771 prm->residual = se_cmd->residual_count; 2772 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2773 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2774 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2775 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2776 prm->rq_result |= SS_RESIDUAL_OVER; 2777 } 2778 2779 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2780 /* 2781 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2782 * ignored in *xmit_response() below 2783 */ 2784 if (qlt_has_data(cmd)) { 2785 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2786 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2787 (prm->rq_result != 0))) { 2788 prm->add_status_pkt = 1; 2789 (*full_req_cnt)++; 2790 } 2791 } 2792 } 2793 2794 return 0; 2795 } 2796 2797 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2798 int sending_sense) 2799 { 2800 if (cmd->qpair->enable_class_2) 2801 return 0; 2802 2803 if (sending_sense) 2804 return cmd->conf_compl_supported; 2805 else 2806 return cmd->qpair->enable_explicit_conf && 2807 cmd->conf_compl_supported; 2808 } 2809 2810 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2811 struct qla_tgt_prm *prm) 2812 { 2813 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2814 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2815 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2816 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2817 ctio->u.status0.flags |= cpu_to_le16( 2818 CTIO7_FLAGS_EXPLICIT_CONFORM | 2819 CTIO7_FLAGS_CONFORM_REQ); 2820 } 2821 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2822 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2823 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2824 int i; 2825 2826 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2827 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2828 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2829 "Skipping EXPLICIT_CONFORM and " 2830 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2831 "non GOOD status\n"); 2832 goto skip_explict_conf; 2833 } 2834 ctio->u.status1.flags |= cpu_to_le16( 2835 CTIO7_FLAGS_EXPLICIT_CONFORM | 2836 CTIO7_FLAGS_CONFORM_REQ); 2837 } 2838 skip_explict_conf: 2839 ctio->u.status1.flags &= 2840 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2841 ctio->u.status1.flags |= 2842 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2843 ctio->u.status1.scsi_status |= 2844 cpu_to_le16(SS_SENSE_LEN_VALID); 2845 ctio->u.status1.sense_length = 2846 cpu_to_le16(prm->sense_buffer_len); 2847 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2848 uint32_t v; 2849 2850 v = get_unaligned_be32( 2851 &((uint32_t *)prm->sense_buffer)[i]); 2852 put_unaligned_le32(v, 2853 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2854 } 2855 qlt_print_dif_err(prm); 2856 2857 } else { 2858 ctio->u.status1.flags &= 2859 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2860 ctio->u.status1.flags |= 2861 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2862 ctio->u.status1.sense_length = 0; 2863 memset(ctio->u.status1.sense_data, 0, 2864 sizeof(ctio->u.status1.sense_data)); 2865 } 2866 2867 /* Sense with len > 24, is it possible ??? */ 2868 } 2869 2870 static inline int 2871 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2872 { 2873 switch (se_cmd->prot_op) { 2874 case TARGET_PROT_DOUT_INSERT: 2875 case TARGET_PROT_DIN_STRIP: 2876 if (ql2xenablehba_err_chk >= 1) 2877 return 1; 2878 break; 2879 case TARGET_PROT_DOUT_PASS: 2880 case TARGET_PROT_DIN_PASS: 2881 if (ql2xenablehba_err_chk >= 2) 2882 return 1; 2883 break; 2884 case TARGET_PROT_DIN_INSERT: 2885 case TARGET_PROT_DOUT_STRIP: 2886 return 1; 2887 default: 2888 break; 2889 } 2890 return 0; 2891 } 2892 2893 static inline int 2894 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2895 { 2896 switch (se_cmd->prot_op) { 2897 case TARGET_PROT_DIN_INSERT: 2898 case TARGET_PROT_DOUT_INSERT: 2899 case TARGET_PROT_DIN_STRIP: 2900 case TARGET_PROT_DOUT_STRIP: 2901 case TARGET_PROT_DIN_PASS: 2902 case TARGET_PROT_DOUT_PASS: 2903 return 1; 2904 default: 2905 return 0; 2906 } 2907 return 0; 2908 } 2909 2910 /* 2911 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2912 */ 2913 static void 2914 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2915 uint16_t *pfw_prot_opts) 2916 { 2917 struct se_cmd *se_cmd = &cmd->se_cmd; 2918 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2919 scsi_qla_host_t *vha = cmd->tgt->vha; 2920 struct qla_hw_data *ha = vha->hw; 2921 uint32_t t32 = 0; 2922 2923 /* 2924 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2925 * have been immplemented by TCM, before AppTag is avail. 2926 * Look for modesense_handlers[] 2927 */ 2928 ctx->app_tag = 0; 2929 ctx->app_tag_mask[0] = 0x0; 2930 ctx->app_tag_mask[1] = 0x0; 2931 2932 if (IS_PI_UNINIT_CAPABLE(ha)) { 2933 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2934 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2935 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2936 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2937 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2938 } 2939 2940 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2941 2942 switch (se_cmd->prot_type) { 2943 case TARGET_DIF_TYPE0_PROT: 2944 /* 2945 * No check for ql2xenablehba_err_chk, as it 2946 * would be an I/O error if hba tag generation 2947 * is not done. 2948 */ 2949 ctx->ref_tag = cpu_to_le32(lba); 2950 /* enable ALL bytes of the ref tag */ 2951 ctx->ref_tag_mask[0] = 0xff; 2952 ctx->ref_tag_mask[1] = 0xff; 2953 ctx->ref_tag_mask[2] = 0xff; 2954 ctx->ref_tag_mask[3] = 0xff; 2955 break; 2956 case TARGET_DIF_TYPE1_PROT: 2957 /* 2958 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2959 * REF tag, and 16 bit app tag. 2960 */ 2961 ctx->ref_tag = cpu_to_le32(lba); 2962 if (!qla_tgt_ref_mask_check(se_cmd) || 2963 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2964 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2965 break; 2966 } 2967 /* enable ALL bytes of the ref tag */ 2968 ctx->ref_tag_mask[0] = 0xff; 2969 ctx->ref_tag_mask[1] = 0xff; 2970 ctx->ref_tag_mask[2] = 0xff; 2971 ctx->ref_tag_mask[3] = 0xff; 2972 break; 2973 case TARGET_DIF_TYPE2_PROT: 2974 /* 2975 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2976 * tag has to match LBA in CDB + N 2977 */ 2978 ctx->ref_tag = cpu_to_le32(lba); 2979 if (!qla_tgt_ref_mask_check(se_cmd) || 2980 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2981 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2982 break; 2983 } 2984 /* enable ALL bytes of the ref tag */ 2985 ctx->ref_tag_mask[0] = 0xff; 2986 ctx->ref_tag_mask[1] = 0xff; 2987 ctx->ref_tag_mask[2] = 0xff; 2988 ctx->ref_tag_mask[3] = 0xff; 2989 break; 2990 case TARGET_DIF_TYPE3_PROT: 2991 /* For TYPE 3 protection: 16 bit GUARD only */ 2992 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2993 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2994 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2995 break; 2996 } 2997 } 2998 2999 static inline int 3000 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3001 { 3002 struct dsd64 *cur_dsd; 3003 uint32_t transfer_length = 0; 3004 uint32_t data_bytes; 3005 uint32_t dif_bytes; 3006 uint8_t bundling = 1; 3007 struct crc_context *crc_ctx_pkt = NULL; 3008 struct qla_hw_data *ha; 3009 struct ctio_crc2_to_fw *pkt; 3010 dma_addr_t crc_ctx_dma; 3011 uint16_t fw_prot_opts = 0; 3012 struct qla_tgt_cmd *cmd = prm->cmd; 3013 struct se_cmd *se_cmd = &cmd->se_cmd; 3014 uint32_t h; 3015 struct atio_from_isp *atio = &prm->cmd->atio; 3016 struct qla_tc_param tc; 3017 uint16_t t16; 3018 scsi_qla_host_t *vha = cmd->vha; 3019 3020 ha = vha->hw; 3021 3022 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3023 prm->pkt = pkt; 3024 memset(pkt, 0, sizeof(*pkt)); 3025 3026 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3027 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3028 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3029 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3030 3031 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3032 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3033 bundling = 0; 3034 3035 /* Compute dif len and adjust data len to incude protection */ 3036 data_bytes = cmd->bufflen; 3037 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3038 3039 switch (se_cmd->prot_op) { 3040 case TARGET_PROT_DIN_INSERT: 3041 case TARGET_PROT_DOUT_STRIP: 3042 transfer_length = data_bytes; 3043 if (cmd->prot_sg_cnt) 3044 data_bytes += dif_bytes; 3045 break; 3046 case TARGET_PROT_DIN_STRIP: 3047 case TARGET_PROT_DOUT_INSERT: 3048 case TARGET_PROT_DIN_PASS: 3049 case TARGET_PROT_DOUT_PASS: 3050 transfer_length = data_bytes + dif_bytes; 3051 break; 3052 default: 3053 BUG(); 3054 break; 3055 } 3056 3057 if (!qlt_hba_err_chk_enabled(se_cmd)) 3058 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3059 /* HBA error checking enabled */ 3060 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3061 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3062 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3063 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3064 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3065 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3066 } 3067 3068 switch (se_cmd->prot_op) { 3069 case TARGET_PROT_DIN_INSERT: 3070 case TARGET_PROT_DOUT_INSERT: 3071 fw_prot_opts |= PO_MODE_DIF_INSERT; 3072 break; 3073 case TARGET_PROT_DIN_STRIP: 3074 case TARGET_PROT_DOUT_STRIP: 3075 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3076 break; 3077 case TARGET_PROT_DIN_PASS: 3078 case TARGET_PROT_DOUT_PASS: 3079 fw_prot_opts |= PO_MODE_DIF_PASS; 3080 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3081 break; 3082 default:/* Normal Request */ 3083 fw_prot_opts |= PO_MODE_DIF_PASS; 3084 break; 3085 } 3086 3087 /* ---- PKT ---- */ 3088 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3089 pkt->entry_type = CTIO_CRC2; 3090 pkt->entry_count = 1; 3091 pkt->vp_index = cmd->vp_idx; 3092 3093 h = qlt_make_handle(qpair); 3094 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3095 /* 3096 * CTIO type 7 from the firmware doesn't provide a way to 3097 * know the initiator's LOOP ID, hence we can't find 3098 * the session and, so, the command. 3099 */ 3100 return -EAGAIN; 3101 } else 3102 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3103 3104 pkt->handle = make_handle(qpair->req->id, h); 3105 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3106 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3107 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3108 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3109 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3110 3111 /* silence compile warning */ 3112 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3113 pkt->ox_id = cpu_to_le16(t16); 3114 3115 t16 = (atio->u.isp24.attr << 9); 3116 pkt->flags |= cpu_to_le16(t16); 3117 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3118 3119 /* Set transfer direction */ 3120 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3121 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3122 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3123 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3124 3125 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3126 /* Fibre channel byte count */ 3127 pkt->transfer_length = cpu_to_le32(transfer_length); 3128 3129 /* ----- CRC context -------- */ 3130 3131 /* Allocate CRC context from global pool */ 3132 crc_ctx_pkt = cmd->ctx = 3133 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3134 3135 if (!crc_ctx_pkt) 3136 goto crc_queuing_error; 3137 3138 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3139 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3140 3141 /* Set handle */ 3142 crc_ctx_pkt->handle = pkt->handle; 3143 3144 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3145 3146 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3147 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3148 3149 if (!bundling) { 3150 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3151 } else { 3152 /* 3153 * Configure Bundling if we need to fetch interlaving 3154 * protection PCI accesses 3155 */ 3156 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3157 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3158 crc_ctx_pkt->u.bundling.dseg_count = 3159 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3160 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3161 } 3162 3163 /* Finish the common fields of CRC pkt */ 3164 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3165 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3166 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3167 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3168 3169 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3170 tc.vha = vha; 3171 tc.blk_sz = cmd->blk_sz; 3172 tc.bufflen = cmd->bufflen; 3173 tc.sg = cmd->sg; 3174 tc.prot_sg = cmd->prot_sg; 3175 tc.ctx = crc_ctx_pkt; 3176 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3177 3178 /* Walks data segments */ 3179 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3180 3181 if (!bundling && prm->prot_seg_cnt) { 3182 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3183 prm->tot_dsds, &tc)) 3184 goto crc_queuing_error; 3185 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3186 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3187 goto crc_queuing_error; 3188 3189 if (bundling && prm->prot_seg_cnt) { 3190 /* Walks dif segments */ 3191 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3192 3193 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3194 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3195 prm->prot_seg_cnt, cmd)) 3196 goto crc_queuing_error; 3197 } 3198 return QLA_SUCCESS; 3199 3200 crc_queuing_error: 3201 /* Cleanup will be performed by the caller */ 3202 qpair->req->outstanding_cmds[h] = NULL; 3203 3204 return QLA_FUNCTION_FAILED; 3205 } 3206 3207 /* 3208 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3209 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3210 */ 3211 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3212 uint8_t scsi_status) 3213 { 3214 struct scsi_qla_host *vha = cmd->vha; 3215 struct qla_qpair *qpair = cmd->qpair; 3216 struct ctio7_to_24xx *pkt; 3217 struct qla_tgt_prm prm; 3218 uint32_t full_req_cnt = 0; 3219 unsigned long flags = 0; 3220 int res; 3221 3222 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3223 (cmd->sess && cmd->sess->deleted)) { 3224 cmd->state = QLA_TGT_STATE_PROCESSED; 3225 return 0; 3226 } 3227 3228 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3229 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3230 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3231 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3232 &cmd->se_cmd, qpair->id); 3233 3234 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3235 &full_req_cnt); 3236 if (unlikely(res != 0)) { 3237 return res; 3238 } 3239 3240 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3241 3242 if (xmit_type == QLA_TGT_XMIT_STATUS) 3243 qpair->tgt_counters.core_qla_snd_status++; 3244 else 3245 qpair->tgt_counters.core_qla_que_buf++; 3246 3247 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3248 /* 3249 * Either the port is not online or this request was from 3250 * previous life, just abort the processing. 3251 */ 3252 cmd->state = QLA_TGT_STATE_PROCESSED; 3253 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3254 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3255 vha->flags.online, qla2x00_reset_active(vha), 3256 cmd->reset_count, qpair->chip_reset); 3257 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3258 return 0; 3259 } 3260 3261 /* Does F/W have an IOCBs for this request */ 3262 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3263 if (unlikely(res)) 3264 goto out_unmap_unlock; 3265 3266 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3267 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3268 else 3269 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3270 if (unlikely(res != 0)) { 3271 qpair->req->cnt += full_req_cnt; 3272 goto out_unmap_unlock; 3273 } 3274 3275 pkt = (struct ctio7_to_24xx *)prm.pkt; 3276 3277 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3278 pkt->u.status0.flags |= 3279 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3280 CTIO7_FLAGS_STATUS_MODE_0); 3281 3282 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3283 qlt_load_data_segments(&prm); 3284 3285 if (prm.add_status_pkt == 0) { 3286 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3287 pkt->u.status0.scsi_status = 3288 cpu_to_le16(prm.rq_result); 3289 pkt->u.status0.residual = 3290 cpu_to_le32(prm.residual); 3291 pkt->u.status0.flags |= cpu_to_le16( 3292 CTIO7_FLAGS_SEND_STATUS); 3293 if (qlt_need_explicit_conf(cmd, 0)) { 3294 pkt->u.status0.flags |= 3295 cpu_to_le16( 3296 CTIO7_FLAGS_EXPLICIT_CONFORM | 3297 CTIO7_FLAGS_CONFORM_REQ); 3298 } 3299 } 3300 3301 } else { 3302 /* 3303 * We have already made sure that there is sufficient 3304 * amount of request entries to not drop HW lock in 3305 * req_pkt(). 3306 */ 3307 struct ctio7_to_24xx *ctio = 3308 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3309 qpair->req); 3310 3311 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3312 "Building additional status packet 0x%p.\n", 3313 ctio); 3314 3315 /* 3316 * T10Dif: ctio_crc2_to_fw overlay ontop of 3317 * ctio7_to_24xx 3318 */ 3319 memcpy(ctio, pkt, sizeof(*ctio)); 3320 /* reset back to CTIO7 */ 3321 ctio->entry_count = 1; 3322 ctio->entry_type = CTIO_TYPE7; 3323 ctio->dseg_count = 0; 3324 ctio->u.status1.flags &= ~cpu_to_le16( 3325 CTIO7_FLAGS_DATA_IN); 3326 3327 /* Real finish is ctio_m1's finish */ 3328 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3329 pkt->u.status0.flags |= cpu_to_le16( 3330 CTIO7_FLAGS_DONT_RET_CTIO); 3331 3332 /* qlt_24xx_init_ctio_to_isp will correct 3333 * all neccessary fields that's part of CTIO7. 3334 * There should be no residual of CTIO-CRC2 data. 3335 */ 3336 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3337 &prm); 3338 } 3339 } else 3340 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3341 3342 3343 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3344 cmd->cmd_sent_to_fw = 1; 3345 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3346 3347 /* Memory Barrier */ 3348 wmb(); 3349 if (qpair->reqq_start_iocbs) 3350 qpair->reqq_start_iocbs(qpair); 3351 else 3352 qla2x00_start_iocbs(vha, qpair->req); 3353 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3354 3355 return 0; 3356 3357 out_unmap_unlock: 3358 qlt_unmap_sg(vha, cmd); 3359 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3360 3361 return res; 3362 } 3363 EXPORT_SYMBOL(qlt_xmit_response); 3364 3365 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3366 { 3367 struct ctio7_to_24xx *pkt; 3368 struct scsi_qla_host *vha = cmd->vha; 3369 struct qla_tgt *tgt = cmd->tgt; 3370 struct qla_tgt_prm prm; 3371 unsigned long flags = 0; 3372 int res = 0; 3373 struct qla_qpair *qpair = cmd->qpair; 3374 3375 memset(&prm, 0, sizeof(prm)); 3376 prm.cmd = cmd; 3377 prm.tgt = tgt; 3378 prm.sg = NULL; 3379 prm.req_cnt = 1; 3380 3381 /* Calculate number of entries and segments required */ 3382 if (qlt_pci_map_calc_cnt(&prm) != 0) 3383 return -EAGAIN; 3384 3385 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3386 (cmd->sess && cmd->sess->deleted)) { 3387 /* 3388 * Either the port is not online or this request was from 3389 * previous life, just abort the processing. 3390 */ 3391 cmd->aborted = 1; 3392 cmd->write_data_transferred = 0; 3393 cmd->state = QLA_TGT_STATE_DATA_IN; 3394 vha->hw->tgt.tgt_ops->handle_data(cmd); 3395 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3396 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3397 vha->flags.online, qla2x00_reset_active(vha), 3398 cmd->reset_count, qpair->chip_reset); 3399 return 0; 3400 } 3401 3402 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3403 /* Does F/W have an IOCBs for this request */ 3404 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3405 if (res != 0) 3406 goto out_unlock_free_unmap; 3407 if (cmd->se_cmd.prot_op) 3408 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3409 else 3410 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3411 3412 if (unlikely(res != 0)) { 3413 qpair->req->cnt += prm.req_cnt; 3414 goto out_unlock_free_unmap; 3415 } 3416 3417 pkt = (struct ctio7_to_24xx *)prm.pkt; 3418 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3419 CTIO7_FLAGS_STATUS_MODE_0); 3420 3421 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3422 qlt_load_data_segments(&prm); 3423 3424 cmd->state = QLA_TGT_STATE_NEED_DATA; 3425 cmd->cmd_sent_to_fw = 1; 3426 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3427 3428 /* Memory Barrier */ 3429 wmb(); 3430 if (qpair->reqq_start_iocbs) 3431 qpair->reqq_start_iocbs(qpair); 3432 else 3433 qla2x00_start_iocbs(vha, qpair->req); 3434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3435 3436 return res; 3437 3438 out_unlock_free_unmap: 3439 qlt_unmap_sg(vha, cmd); 3440 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3441 3442 return res; 3443 } 3444 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3445 3446 3447 /* 3448 * it is assumed either hardware_lock or qpair lock is held. 3449 */ 3450 static void 3451 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3452 struct ctio_crc_from_fw *sts) 3453 { 3454 uint8_t *ap = &sts->actual_dif[0]; 3455 uint8_t *ep = &sts->expected_dif[0]; 3456 uint64_t lba = cmd->se_cmd.t_task_lba; 3457 uint8_t scsi_status, sense_key, asc, ascq; 3458 unsigned long flags; 3459 struct scsi_qla_host *vha = cmd->vha; 3460 3461 cmd->trc_flags |= TRC_DIF_ERR; 3462 3463 cmd->a_guard = get_unaligned_be16(ap + 0); 3464 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3465 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3466 3467 cmd->e_guard = get_unaligned_be16(ep + 0); 3468 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3469 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3470 3471 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3472 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3473 3474 scsi_status = sense_key = asc = ascq = 0; 3475 3476 /* check appl tag */ 3477 if (cmd->e_app_tag != cmd->a_app_tag) { 3478 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3479 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3480 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3481 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3482 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3483 cmd->atio.u.isp24.fcp_hdr.ox_id); 3484 3485 cmd->dif_err_code = DIF_ERR_APP; 3486 scsi_status = SAM_STAT_CHECK_CONDITION; 3487 sense_key = ABORTED_COMMAND; 3488 asc = 0x10; 3489 ascq = 0x2; 3490 } 3491 3492 /* check ref tag */ 3493 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3494 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3495 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", 3496 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3497 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3498 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3499 cmd->atio.u.isp24.fcp_hdr.ox_id); 3500 3501 cmd->dif_err_code = DIF_ERR_REF; 3502 scsi_status = SAM_STAT_CHECK_CONDITION; 3503 sense_key = ABORTED_COMMAND; 3504 asc = 0x10; 3505 ascq = 0x3; 3506 goto out; 3507 } 3508 3509 /* check guard */ 3510 if (cmd->e_guard != cmd->a_guard) { 3511 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3512 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3513 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3514 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3515 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3516 cmd->atio.u.isp24.fcp_hdr.ox_id); 3517 3518 cmd->dif_err_code = DIF_ERR_GRD; 3519 scsi_status = SAM_STAT_CHECK_CONDITION; 3520 sense_key = ABORTED_COMMAND; 3521 asc = 0x10; 3522 ascq = 0x1; 3523 } 3524 out: 3525 switch (cmd->state) { 3526 case QLA_TGT_STATE_NEED_DATA: 3527 /* handle_data will load DIF error code */ 3528 cmd->state = QLA_TGT_STATE_DATA_IN; 3529 vha->hw->tgt.tgt_ops->handle_data(cmd); 3530 break; 3531 default: 3532 spin_lock_irqsave(&cmd->cmd_lock, flags); 3533 if (cmd->aborted) { 3534 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3535 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3536 break; 3537 } 3538 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3539 3540 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3541 ascq); 3542 /* assume scsi status gets out on the wire. 3543 * Will not wait for completion. 3544 */ 3545 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3546 break; 3547 } 3548 } 3549 3550 /* If hardware_lock held on entry, might drop it, then reaquire */ 3551 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3552 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3553 struct imm_ntfy_from_isp *ntfy) 3554 { 3555 struct nack_to_isp *nack; 3556 struct qla_hw_data *ha = vha->hw; 3557 request_t *pkt; 3558 int ret = 0; 3559 3560 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3561 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3562 3563 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3564 if (pkt == NULL) { 3565 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3566 "qla_target(%d): %s failed: unable to allocate " 3567 "request packet\n", vha->vp_idx, __func__); 3568 return -ENOMEM; 3569 } 3570 3571 pkt->entry_type = NOTIFY_ACK_TYPE; 3572 pkt->entry_count = 1; 3573 pkt->handle = QLA_TGT_SKIP_HANDLE; 3574 3575 nack = (struct nack_to_isp *)pkt; 3576 nack->ox_id = ntfy->ox_id; 3577 3578 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3579 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3580 nack->u.isp24.flags = ntfy->u.isp24.flags & 3581 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3582 } 3583 3584 /* terminate */ 3585 nack->u.isp24.flags |= 3586 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3587 3588 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3589 nack->u.isp24.status = ntfy->u.isp24.status; 3590 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3591 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3592 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3593 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3594 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3595 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3596 3597 qla2x00_start_iocbs(vha, vha->req); 3598 return ret; 3599 } 3600 3601 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3602 struct imm_ntfy_from_isp *imm, int ha_locked) 3603 { 3604 int rc; 3605 3606 WARN_ON_ONCE(!ha_locked); 3607 rc = __qlt_send_term_imm_notif(vha, imm); 3608 pr_debug("rc = %d\n", rc); 3609 } 3610 3611 /* 3612 * If hardware_lock held on entry, might drop it, then reaquire 3613 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3614 */ 3615 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3616 struct qla_tgt_cmd *cmd, 3617 struct atio_from_isp *atio) 3618 { 3619 struct scsi_qla_host *vha = qpair->vha; 3620 struct ctio7_to_24xx *ctio24; 3621 struct qla_hw_data *ha = vha->hw; 3622 request_t *pkt; 3623 int ret = 0; 3624 uint16_t temp; 3625 3626 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3627 3628 if (cmd) 3629 vha = cmd->vha; 3630 3631 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3632 if (pkt == NULL) { 3633 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3634 "qla_target(%d): %s failed: unable to allocate " 3635 "request packet\n", vha->vp_idx, __func__); 3636 return -ENOMEM; 3637 } 3638 3639 if (cmd != NULL) { 3640 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3641 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3642 "qla_target(%d): Terminating cmd %p with " 3643 "incorrect state %d\n", vha->vp_idx, cmd, 3644 cmd->state); 3645 } else 3646 ret = 1; 3647 } 3648 3649 qpair->tgt_counters.num_term_xchg_sent++; 3650 pkt->entry_count = 1; 3651 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3652 3653 ctio24 = (struct ctio7_to_24xx *)pkt; 3654 ctio24->entry_type = CTIO_TYPE7; 3655 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3656 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3657 ctio24->vp_index = vha->vp_idx; 3658 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3659 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3660 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3661 CTIO7_FLAGS_TERMINATE; 3662 ctio24->u.status1.flags = cpu_to_le16(temp); 3663 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3664 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3665 3666 /* Memory Barrier */ 3667 wmb(); 3668 if (qpair->reqq_start_iocbs) 3669 qpair->reqq_start_iocbs(qpair); 3670 else 3671 qla2x00_start_iocbs(vha, qpair->req); 3672 return ret; 3673 } 3674 3675 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3676 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3677 int ul_abort) 3678 { 3679 struct scsi_qla_host *vha; 3680 unsigned long flags = 0; 3681 int rc; 3682 3683 /* why use different vha? NPIV */ 3684 if (cmd) 3685 vha = cmd->vha; 3686 else 3687 vha = qpair->vha; 3688 3689 if (ha_locked) { 3690 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3691 if (rc == -ENOMEM) 3692 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3693 goto done; 3694 } 3695 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3696 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3697 if (rc == -ENOMEM) 3698 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3699 3700 done: 3701 if (cmd && !ul_abort && !cmd->aborted) { 3702 if (cmd->sg_mapped) 3703 qlt_unmap_sg(vha, cmd); 3704 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3705 } 3706 3707 if (!ha_locked) 3708 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3709 3710 return; 3711 } 3712 3713 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3714 { 3715 struct list_head free_list; 3716 struct qla_tgt_cmd *cmd, *tcmd; 3717 3718 vha->hw->tgt.leak_exchg_thresh_hold = 3719 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3720 3721 cmd = tcmd = NULL; 3722 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3723 INIT_LIST_HEAD(&free_list); 3724 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3725 3726 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3727 list_del(&cmd->cmd_list); 3728 /* This cmd was never sent to TCM. There is no need 3729 * to schedule free or call free_cmd 3730 */ 3731 qlt_free_cmd(cmd); 3732 vha->hw->tgt.num_qfull_cmds_alloc--; 3733 } 3734 } 3735 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3736 } 3737 3738 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3739 { 3740 uint32_t total_leaked; 3741 3742 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3743 3744 if (vha->hw->tgt.leak_exchg_thresh_hold && 3745 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3746 3747 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3748 "Chip reset due to exchange starvation: %d/%d.\n", 3749 total_leaked, vha->hw->cur_fw_xcb_count); 3750 3751 if (IS_P3P_TYPE(vha->hw)) 3752 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3753 else 3754 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3755 qla2xxx_wake_dpc(vha); 3756 } 3757 3758 } 3759 3760 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3761 { 3762 struct qla_tgt *tgt = cmd->tgt; 3763 struct scsi_qla_host *vha = tgt->vha; 3764 struct se_cmd *se_cmd = &cmd->se_cmd; 3765 unsigned long flags; 3766 3767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3768 "qla_target(%d): terminating exchange for aborted cmd=%p " 3769 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3770 se_cmd->tag); 3771 3772 spin_lock_irqsave(&cmd->cmd_lock, flags); 3773 if (cmd->aborted) { 3774 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3775 /* 3776 * It's normal to see 2 calls in this path: 3777 * 1) XFER Rdy completion + CMD_T_ABORT 3778 * 2) TCM TMR - drain_state_list 3779 */ 3780 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3781 "multiple abort. %p transport_state %x, t_state %x, " 3782 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3783 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3784 return -EIO; 3785 } 3786 cmd->aborted = 1; 3787 cmd->trc_flags |= TRC_ABORT; 3788 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3789 3790 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3791 return 0; 3792 } 3793 EXPORT_SYMBOL(qlt_abort_cmd); 3794 3795 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3796 { 3797 struct fc_port *sess = cmd->sess; 3798 3799 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3800 "%s: se_cmd[%p] ox_id %04x\n", 3801 __func__, &cmd->se_cmd, 3802 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3803 3804 BUG_ON(cmd->cmd_in_wq); 3805 3806 if (cmd->sg_mapped) 3807 qlt_unmap_sg(cmd->vha, cmd); 3808 3809 if (!cmd->q_full) 3810 qlt_decr_num_pend_cmds(cmd->vha); 3811 3812 BUG_ON(cmd->sg_mapped); 3813 cmd->jiffies_at_free = get_jiffies_64(); 3814 if (unlikely(cmd->free_sg)) 3815 kfree(cmd->sg); 3816 3817 if (!sess || !sess->se_sess) { 3818 WARN_ON(1); 3819 return; 3820 } 3821 cmd->jiffies_at_free = get_jiffies_64(); 3822 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3823 } 3824 EXPORT_SYMBOL(qlt_free_cmd); 3825 3826 /* 3827 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3828 */ 3829 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3830 struct qla_tgt_cmd *cmd, uint32_t status) 3831 { 3832 int term = 0; 3833 struct scsi_qla_host *vha = qpair->vha; 3834 3835 if (cmd->se_cmd.prot_op) 3836 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3837 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3838 "se_cmd=%p tag[%x] op %#x/%s", 3839 cmd->lba, cmd->lba, 3840 cmd->num_blks, &cmd->se_cmd, 3841 cmd->atio.u.isp24.exchange_addr, 3842 cmd->se_cmd.prot_op, 3843 prot_op_str(cmd->se_cmd.prot_op)); 3844 3845 if (ctio != NULL) { 3846 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3847 3848 term = !(c->flags & 3849 cpu_to_le16(OF_TERM_EXCH)); 3850 } else 3851 term = 1; 3852 3853 if (term) 3854 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3855 3856 return term; 3857 } 3858 3859 3860 /* ha->hardware_lock supposed to be held on entry */ 3861 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3862 struct rsp_que *rsp, uint32_t handle, void *ctio) 3863 { 3864 void *cmd = NULL; 3865 struct req_que *req; 3866 int qid = GET_QID(handle); 3867 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3868 3869 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3870 return NULL; 3871 3872 if (qid == rsp->req->id) { 3873 req = rsp->req; 3874 } else if (vha->hw->req_q_map[qid]) { 3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3876 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3877 vha->vp_idx, rsp->id, handle); 3878 req = vha->hw->req_q_map[qid]; 3879 } else { 3880 return NULL; 3881 } 3882 3883 h &= QLA_CMD_HANDLE_MASK; 3884 3885 if (h != QLA_TGT_NULL_HANDLE) { 3886 if (unlikely(h >= req->num_outstanding_cmds)) { 3887 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3888 "qla_target(%d): Wrong handle %x received\n", 3889 vha->vp_idx, handle); 3890 return NULL; 3891 } 3892 3893 cmd = req->outstanding_cmds[h]; 3894 if (unlikely(cmd == NULL)) { 3895 ql_dbg(ql_dbg_async, vha, 0xe053, 3896 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3897 vha->vp_idx, handle, req->id, rsp->id); 3898 return NULL; 3899 } 3900 req->outstanding_cmds[h] = NULL; 3901 } else if (ctio != NULL) { 3902 /* We can't get loop ID from CTIO7 */ 3903 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3904 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3905 "support NULL handles\n", vha->vp_idx); 3906 return NULL; 3907 } 3908 3909 return cmd; 3910 } 3911 3912 /* 3913 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3914 */ 3915 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3916 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3917 { 3918 struct qla_hw_data *ha = vha->hw; 3919 struct se_cmd *se_cmd; 3920 struct qla_tgt_cmd *cmd; 3921 struct qla_qpair *qpair = rsp->qpair; 3922 3923 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3924 /* That could happen only in case of an error/reset/abort */ 3925 if (status != CTIO_SUCCESS) { 3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3927 "Intermediate CTIO received" 3928 " (status %x)\n", status); 3929 } 3930 return; 3931 } 3932 3933 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3934 if (cmd == NULL) 3935 return; 3936 3937 se_cmd = &cmd->se_cmd; 3938 cmd->cmd_sent_to_fw = 0; 3939 3940 qlt_unmap_sg(vha, cmd); 3941 3942 if (unlikely(status != CTIO_SUCCESS)) { 3943 switch (status & 0xFFFF) { 3944 case CTIO_INVALID_RX_ID: 3945 if (printk_ratelimit()) 3946 dev_info(&vha->hw->pdev->dev, 3947 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3948 vha->vp_idx, cmd->atio.u.isp24.attr, 3949 ((cmd->ctio_flags >> 9) & 0xf), 3950 cmd->ctio_flags); 3951 3952 break; 3953 case CTIO_LIP_RESET: 3954 case CTIO_TARGET_RESET: 3955 case CTIO_ABORTED: 3956 /* driver request abort via Terminate exchange */ 3957 case CTIO_TIMEOUT: 3958 /* They are OK */ 3959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3960 "qla_target(%d): CTIO with " 3961 "status %#x received, state %x, se_cmd %p, " 3962 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3963 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3964 status, cmd->state, se_cmd); 3965 break; 3966 3967 case CTIO_PORT_LOGGED_OUT: 3968 case CTIO_PORT_UNAVAILABLE: 3969 { 3970 int logged_out = 3971 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3972 3973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3974 "qla_target(%d): CTIO with %s status %x " 3975 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3976 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3977 status, cmd->state, se_cmd); 3978 3979 if (logged_out && cmd->sess) { 3980 /* 3981 * Session is already logged out, but we need 3982 * to notify initiator, who's not aware of this 3983 */ 3984 cmd->sess->send_els_logo = 1; 3985 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3986 "%s %d %8phC post del sess\n", 3987 __func__, __LINE__, cmd->sess->port_name); 3988 3989 qlt_schedule_sess_for_deletion(cmd->sess); 3990 } 3991 break; 3992 } 3993 case CTIO_DIF_ERROR: { 3994 struct ctio_crc_from_fw *crc = 3995 (struct ctio_crc_from_fw *)ctio; 3996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3997 "qla_target(%d): CTIO with DIF_ERROR status %x " 3998 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3999 "expect_dif[0x%llx]\n", 4000 vha->vp_idx, status, cmd->state, se_cmd, 4001 *((u64 *)&crc->actual_dif[0]), 4002 *((u64 *)&crc->expected_dif[0])); 4003 4004 qlt_handle_dif_error(qpair, cmd, ctio); 4005 return; 4006 } 4007 default: 4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4009 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4010 vha->vp_idx, status, cmd->state, se_cmd); 4011 break; 4012 } 4013 4014 4015 /* "cmd->aborted" means 4016 * cmd is already aborted/terminated, we don't 4017 * need to terminate again. The exchange is already 4018 * cleaned up/freed at FW level. Just cleanup at driver 4019 * level. 4020 */ 4021 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4022 (!cmd->aborted)) { 4023 cmd->trc_flags |= TRC_CTIO_ERR; 4024 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4025 return; 4026 } 4027 } 4028 4029 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4030 cmd->trc_flags |= TRC_CTIO_DONE; 4031 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4032 cmd->state = QLA_TGT_STATE_DATA_IN; 4033 4034 if (status == CTIO_SUCCESS) 4035 cmd->write_data_transferred = 1; 4036 4037 ha->tgt.tgt_ops->handle_data(cmd); 4038 return; 4039 } else if (cmd->aborted) { 4040 cmd->trc_flags |= TRC_CTIO_ABORTED; 4041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4042 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4043 } else { 4044 cmd->trc_flags |= TRC_CTIO_STRANGE; 4045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4046 "qla_target(%d): A command in state (%d) should " 4047 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4048 } 4049 4050 if (unlikely(status != CTIO_SUCCESS) && 4051 !cmd->aborted) { 4052 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4053 dump_stack(); 4054 } 4055 4056 ha->tgt.tgt_ops->free_cmd(cmd); 4057 } 4058 4059 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4060 uint8_t task_codes) 4061 { 4062 int fcp_task_attr; 4063 4064 switch (task_codes) { 4065 case ATIO_SIMPLE_QUEUE: 4066 fcp_task_attr = TCM_SIMPLE_TAG; 4067 break; 4068 case ATIO_HEAD_OF_QUEUE: 4069 fcp_task_attr = TCM_HEAD_TAG; 4070 break; 4071 case ATIO_ORDERED_QUEUE: 4072 fcp_task_attr = TCM_ORDERED_TAG; 4073 break; 4074 case ATIO_ACA_QUEUE: 4075 fcp_task_attr = TCM_ACA_TAG; 4076 break; 4077 case ATIO_UNTAGGED: 4078 fcp_task_attr = TCM_SIMPLE_TAG; 4079 break; 4080 default: 4081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4082 "qla_target: unknown task code %x, use ORDERED instead\n", 4083 task_codes); 4084 fcp_task_attr = TCM_ORDERED_TAG; 4085 break; 4086 } 4087 4088 return fcp_task_attr; 4089 } 4090 4091 /* 4092 * Process context for I/O path into tcm_qla2xxx code 4093 */ 4094 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4095 { 4096 scsi_qla_host_t *vha = cmd->vha; 4097 struct qla_hw_data *ha = vha->hw; 4098 struct fc_port *sess = cmd->sess; 4099 struct atio_from_isp *atio = &cmd->atio; 4100 unsigned char *cdb; 4101 unsigned long flags; 4102 uint32_t data_length; 4103 int ret, fcp_task_attr, data_dir, bidi = 0; 4104 struct qla_qpair *qpair = cmd->qpair; 4105 4106 cmd->cmd_in_wq = 0; 4107 cmd->trc_flags |= TRC_DO_WORK; 4108 4109 if (cmd->aborted) { 4110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4111 "cmd with tag %u is aborted\n", 4112 cmd->atio.u.isp24.exchange_addr); 4113 goto out_term; 4114 } 4115 4116 spin_lock_init(&cmd->cmd_lock); 4117 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4118 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4119 4120 if (atio->u.isp24.fcp_cmnd.rddata && 4121 atio->u.isp24.fcp_cmnd.wrdata) { 4122 bidi = 1; 4123 data_dir = DMA_TO_DEVICE; 4124 } else if (atio->u.isp24.fcp_cmnd.rddata) 4125 data_dir = DMA_FROM_DEVICE; 4126 else if (atio->u.isp24.fcp_cmnd.wrdata) 4127 data_dir = DMA_TO_DEVICE; 4128 else 4129 data_dir = DMA_NONE; 4130 4131 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4132 atio->u.isp24.fcp_cmnd.task_attr); 4133 data_length = get_datalen_for_atio(atio); 4134 4135 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4136 fcp_task_attr, data_dir, bidi); 4137 if (ret != 0) 4138 goto out_term; 4139 /* 4140 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4141 */ 4142 ha->tgt.tgt_ops->put_sess(sess); 4143 return; 4144 4145 out_term: 4146 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4147 /* 4148 * cmd has not sent to target yet, so pass NULL as the second 4149 * argument to qlt_send_term_exchange() and free the memory here. 4150 */ 4151 cmd->trc_flags |= TRC_DO_WORK_ERR; 4152 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4153 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4154 4155 qlt_decr_num_pend_cmds(vha); 4156 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4157 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4158 4159 ha->tgt.tgt_ops->put_sess(sess); 4160 } 4161 4162 static void qlt_do_work(struct work_struct *work) 4163 { 4164 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4165 scsi_qla_host_t *vha = cmd->vha; 4166 unsigned long flags; 4167 4168 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4169 list_del(&cmd->cmd_list); 4170 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4171 4172 __qlt_do_work(cmd); 4173 } 4174 4175 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4176 { 4177 unsigned long flags; 4178 struct qla_hw_data *ha = vha->hw; 4179 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4180 void *node; 4181 u64 key = 0; 4182 4183 ql_log(ql_log_info, vha, 0x706c, 4184 "User update Number of Active Qpairs %d\n", 4185 ha->tgt.num_act_qpairs); 4186 4187 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4188 4189 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4190 btree_remove64(&tgt->lun_qpair_map, key); 4191 4192 ha->base_qpair->lun_cnt = 0; 4193 for (key = 0; key < ha->max_qpairs; key++) 4194 if (ha->queue_pair_map[key]) 4195 ha->queue_pair_map[key]->lun_cnt = 0; 4196 4197 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4198 } 4199 4200 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4201 struct qla_tgt_cmd *cmd) 4202 { 4203 struct qla_qpair *qpair, *qp; 4204 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4205 struct qla_qpair_hint *h; 4206 4207 if (vha->flags.qpairs_available) { 4208 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4209 if (unlikely(!h)) { 4210 /* spread lun to qpair ratio evently */ 4211 int lcnt = 0, rc; 4212 struct scsi_qla_host *base_vha = 4213 pci_get_drvdata(vha->hw->pdev); 4214 4215 qpair = vha->hw->base_qpair; 4216 if (qpair->lun_cnt == 0) { 4217 qpair->lun_cnt++; 4218 h = qla_qpair_to_hint(tgt, qpair); 4219 BUG_ON(!h); 4220 rc = btree_insert64(&tgt->lun_qpair_map, 4221 cmd->unpacked_lun, h, GFP_ATOMIC); 4222 if (rc) { 4223 qpair->lun_cnt--; 4224 ql_log(ql_log_info, vha, 0xd037, 4225 "Unable to insert lun %llx into lun_qpair_map\n", 4226 cmd->unpacked_lun); 4227 } 4228 goto out; 4229 } else { 4230 lcnt = qpair->lun_cnt; 4231 } 4232 4233 h = NULL; 4234 list_for_each_entry(qp, &base_vha->qp_list, 4235 qp_list_elem) { 4236 if (qp->lun_cnt == 0) { 4237 qp->lun_cnt++; 4238 h = qla_qpair_to_hint(tgt, qp); 4239 BUG_ON(!h); 4240 rc = btree_insert64(&tgt->lun_qpair_map, 4241 cmd->unpacked_lun, h, GFP_ATOMIC); 4242 if (rc) { 4243 qp->lun_cnt--; 4244 ql_log(ql_log_info, vha, 0xd038, 4245 "Unable to insert lun %llx into lun_qpair_map\n", 4246 cmd->unpacked_lun); 4247 } 4248 qpair = qp; 4249 goto out; 4250 } else { 4251 if (qp->lun_cnt < lcnt) { 4252 lcnt = qp->lun_cnt; 4253 qpair = qp; 4254 continue; 4255 } 4256 } 4257 } 4258 BUG_ON(!qpair); 4259 qpair->lun_cnt++; 4260 h = qla_qpair_to_hint(tgt, qpair); 4261 BUG_ON(!h); 4262 rc = btree_insert64(&tgt->lun_qpair_map, 4263 cmd->unpacked_lun, h, GFP_ATOMIC); 4264 if (rc) { 4265 qpair->lun_cnt--; 4266 ql_log(ql_log_info, vha, 0xd039, 4267 "Unable to insert lun %llx into lun_qpair_map\n", 4268 cmd->unpacked_lun); 4269 } 4270 } 4271 } else { 4272 h = &tgt->qphints[0]; 4273 } 4274 out: 4275 cmd->qpair = h->qpair; 4276 cmd->se_cmd.cpuid = h->cpuid; 4277 } 4278 4279 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4280 struct fc_port *sess, 4281 struct atio_from_isp *atio) 4282 { 4283 struct qla_tgt_cmd *cmd; 4284 4285 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4286 if (!cmd) 4287 return NULL; 4288 4289 cmd->cmd_type = TYPE_TGT_CMD; 4290 memcpy(&cmd->atio, atio, sizeof(*atio)); 4291 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4292 cmd->state = QLA_TGT_STATE_NEW; 4293 cmd->tgt = vha->vha_tgt.qla_tgt; 4294 qlt_incr_num_pend_cmds(vha); 4295 cmd->vha = vha; 4296 cmd->sess = sess; 4297 cmd->loop_id = sess->loop_id; 4298 cmd->conf_compl_supported = sess->conf_compl_supported; 4299 4300 cmd->trc_flags = 0; 4301 cmd->jiffies_at_alloc = get_jiffies_64(); 4302 4303 cmd->unpacked_lun = scsilun_to_int( 4304 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4305 qlt_assign_qpair(vha, cmd); 4306 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4307 cmd->vp_idx = vha->vp_idx; 4308 4309 return cmd; 4310 } 4311 4312 /* ha->hardware_lock supposed to be held on entry */ 4313 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4314 struct atio_from_isp *atio) 4315 { 4316 struct qla_hw_data *ha = vha->hw; 4317 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4318 struct fc_port *sess; 4319 struct qla_tgt_cmd *cmd; 4320 unsigned long flags; 4321 port_id_t id; 4322 4323 if (unlikely(tgt->tgt_stop)) { 4324 ql_dbg(ql_dbg_io, vha, 0x3061, 4325 "New command while device %p is shutting down\n", tgt); 4326 return -ENODEV; 4327 } 4328 4329 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4330 if (IS_SW_RESV_ADDR(id)) 4331 return -EBUSY; 4332 4333 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4334 if (unlikely(!sess)) 4335 return -EFAULT; 4336 4337 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4338 * session deletion, but it's still in sess_del_work wq */ 4339 if (sess->deleted) { 4340 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4341 "New command while old session %p is being deleted\n", 4342 sess); 4343 return -EFAULT; 4344 } 4345 4346 /* 4347 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4348 */ 4349 if (!kref_get_unless_zero(&sess->sess_kref)) { 4350 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4351 "%s: kref_get fail, %8phC oxid %x \n", 4352 __func__, sess->port_name, 4353 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4354 return -EFAULT; 4355 } 4356 4357 cmd = qlt_get_tag(vha, sess, atio); 4358 if (!cmd) { 4359 ql_dbg(ql_dbg_io, vha, 0x3062, 4360 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4361 ha->tgt.tgt_ops->put_sess(sess); 4362 return -EBUSY; 4363 } 4364 4365 cmd->cmd_in_wq = 1; 4366 cmd->trc_flags |= TRC_NEW_CMD; 4367 4368 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4369 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4370 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4371 4372 INIT_WORK(&cmd->work, qlt_do_work); 4373 if (vha->flags.qpairs_available) { 4374 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4375 } else if (ha->msix_count) { 4376 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4377 queue_work_on(smp_processor_id(), qla_tgt_wq, 4378 &cmd->work); 4379 else 4380 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4381 &cmd->work); 4382 } else { 4383 queue_work(qla_tgt_wq, &cmd->work); 4384 } 4385 4386 return 0; 4387 } 4388 4389 /* ha->hardware_lock supposed to be held on entry */ 4390 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4391 int fn, void *iocb, int flags) 4392 { 4393 struct scsi_qla_host *vha = sess->vha; 4394 struct qla_hw_data *ha = vha->hw; 4395 struct qla_tgt_mgmt_cmd *mcmd; 4396 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4397 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4398 4399 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4400 if (!mcmd) { 4401 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4402 "qla_target(%d): Allocation of management " 4403 "command failed, some commands and their data could " 4404 "leak\n", vha->vp_idx); 4405 return -ENOMEM; 4406 } 4407 memset(mcmd, 0, sizeof(*mcmd)); 4408 mcmd->sess = sess; 4409 4410 if (iocb) { 4411 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4412 sizeof(mcmd->orig_iocb.imm_ntfy)); 4413 } 4414 mcmd->tmr_func = fn; 4415 mcmd->flags = flags; 4416 mcmd->reset_count = ha->base_qpair->chip_reset; 4417 mcmd->qpair = h->qpair; 4418 mcmd->vha = vha; 4419 mcmd->se_cmd.cpuid = h->cpuid; 4420 mcmd->unpacked_lun = lun; 4421 4422 switch (fn) { 4423 case QLA_TGT_LUN_RESET: 4424 case QLA_TGT_CLEAR_TS: 4425 case QLA_TGT_ABORT_TS: 4426 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4427 fallthrough; 4428 case QLA_TGT_CLEAR_ACA: 4429 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4430 mcmd->qpair = h->qpair; 4431 mcmd->se_cmd.cpuid = h->cpuid; 4432 break; 4433 4434 case QLA_TGT_TARGET_RESET: 4435 case QLA_TGT_NEXUS_LOSS_SESS: 4436 case QLA_TGT_NEXUS_LOSS: 4437 case QLA_TGT_ABORT_ALL: 4438 default: 4439 /* no-op */ 4440 break; 4441 } 4442 4443 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4444 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4445 &mcmd->work); 4446 4447 return 0; 4448 } 4449 4450 /* ha->hardware_lock supposed to be held on entry */ 4451 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4452 { 4453 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4454 struct qla_hw_data *ha = vha->hw; 4455 struct fc_port *sess; 4456 u64 unpacked_lun; 4457 int fn; 4458 unsigned long flags; 4459 4460 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4461 4462 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4463 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4464 a->u.isp24.fcp_hdr.s_id); 4465 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4466 4467 unpacked_lun = 4468 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4469 4470 if (sess == NULL || sess->deleted) 4471 return -EFAULT; 4472 4473 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4474 } 4475 4476 /* ha->hardware_lock supposed to be held on entry */ 4477 static int __qlt_abort_task(struct scsi_qla_host *vha, 4478 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4479 { 4480 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4481 struct qla_hw_data *ha = vha->hw; 4482 struct qla_tgt_mgmt_cmd *mcmd; 4483 u64 unpacked_lun; 4484 int rc; 4485 4486 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4487 if (mcmd == NULL) { 4488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4489 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4490 vha->vp_idx, __func__); 4491 return -ENOMEM; 4492 } 4493 memset(mcmd, 0, sizeof(*mcmd)); 4494 4495 mcmd->sess = sess; 4496 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4497 sizeof(mcmd->orig_iocb.imm_ntfy)); 4498 4499 unpacked_lun = 4500 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4501 mcmd->reset_count = ha->base_qpair->chip_reset; 4502 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4503 mcmd->qpair = ha->base_qpair; 4504 4505 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4506 le16_to_cpu(iocb->u.isp2x.seq_id)); 4507 if (rc != 0) { 4508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4509 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4510 vha->vp_idx, rc); 4511 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4512 return -EFAULT; 4513 } 4514 4515 return 0; 4516 } 4517 4518 /* ha->hardware_lock supposed to be held on entry */ 4519 static int qlt_abort_task(struct scsi_qla_host *vha, 4520 struct imm_ntfy_from_isp *iocb) 4521 { 4522 struct qla_hw_data *ha = vha->hw; 4523 struct fc_port *sess; 4524 int loop_id; 4525 unsigned long flags; 4526 4527 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4528 4529 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4530 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4531 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4532 4533 if (sess == NULL) { 4534 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4535 "qla_target(%d): task abort for unexisting " 4536 "session\n", vha->vp_idx); 4537 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4538 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4539 } 4540 4541 return __qlt_abort_task(vha, iocb, sess); 4542 } 4543 4544 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4545 { 4546 if (rc != MBS_COMMAND_COMPLETE) { 4547 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4548 "%s: se_sess %p / sess %p from" 4549 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4550 " LOGO failed: %#x\n", 4551 __func__, 4552 fcport->se_sess, 4553 fcport, 4554 fcport->port_name, fcport->loop_id, 4555 fcport->d_id.b.domain, fcport->d_id.b.area, 4556 fcport->d_id.b.al_pa, rc); 4557 } 4558 4559 fcport->logout_completed = 1; 4560 } 4561 4562 /* 4563 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4564 * 4565 * Schedules sessions with matching port_id/loop_id but different wwn for 4566 * deletion. Returns existing session with matching wwn if present. 4567 * Null otherwise. 4568 */ 4569 struct fc_port * 4570 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4571 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4572 { 4573 struct fc_port *sess = NULL, *other_sess; 4574 uint64_t other_wwn; 4575 4576 *conflict_sess = NULL; 4577 4578 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4579 4580 other_wwn = wwn_to_u64(other_sess->port_name); 4581 4582 if (wwn == other_wwn) { 4583 WARN_ON(sess); 4584 sess = other_sess; 4585 continue; 4586 } 4587 4588 /* find other sess with nport_id collision */ 4589 if (port_id.b24 == other_sess->d_id.b24) { 4590 if (loop_id != other_sess->loop_id) { 4591 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4592 "Invalidating sess %p loop_id %d wwn %llx.\n", 4593 other_sess, other_sess->loop_id, other_wwn); 4594 4595 /* 4596 * logout_on_delete is set by default, but another 4597 * session that has the same s_id/loop_id combo 4598 * might have cleared it when requested this session 4599 * deletion, so don't touch it 4600 */ 4601 qlt_schedule_sess_for_deletion(other_sess); 4602 } else { 4603 /* 4604 * Another wwn used to have our s_id/loop_id 4605 * kill the session, but don't free the loop_id 4606 */ 4607 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4608 "Invalidating sess %p loop_id %d wwn %llx.\n", 4609 other_sess, other_sess->loop_id, other_wwn); 4610 4611 other_sess->keep_nport_handle = 1; 4612 if (other_sess->disc_state != DSC_DELETED) 4613 *conflict_sess = other_sess; 4614 qlt_schedule_sess_for_deletion(other_sess); 4615 } 4616 continue; 4617 } 4618 4619 /* find other sess with nport handle collision */ 4620 if ((loop_id == other_sess->loop_id) && 4621 (loop_id != FC_NO_LOOP_ID)) { 4622 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4623 "Invalidating sess %p loop_id %d wwn %llx.\n", 4624 other_sess, other_sess->loop_id, other_wwn); 4625 4626 /* Same loop_id but different s_id 4627 * Ok to kill and logout */ 4628 qlt_schedule_sess_for_deletion(other_sess); 4629 } 4630 } 4631 4632 return sess; 4633 } 4634 4635 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4636 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4637 { 4638 struct qla_tgt_sess_op *op; 4639 struct qla_tgt_cmd *cmd; 4640 uint32_t key; 4641 int count = 0; 4642 unsigned long flags; 4643 4644 key = (((u32)s_id->b.domain << 16) | 4645 ((u32)s_id->b.area << 8) | 4646 ((u32)s_id->b.al_pa)); 4647 4648 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4649 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4650 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4651 4652 if (op_key == key) { 4653 op->aborted = true; 4654 count++; 4655 } 4656 } 4657 4658 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4659 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4660 4661 if (op_key == key) { 4662 op->aborted = true; 4663 count++; 4664 } 4665 } 4666 4667 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4668 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4669 4670 if (cmd_key == key) { 4671 cmd->aborted = 1; 4672 count++; 4673 } 4674 } 4675 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4676 4677 return count; 4678 } 4679 4680 static int qlt_handle_login(struct scsi_qla_host *vha, 4681 struct imm_ntfy_from_isp *iocb) 4682 { 4683 struct fc_port *sess = NULL, *conflict_sess = NULL; 4684 uint64_t wwn; 4685 port_id_t port_id; 4686 uint16_t loop_id, wd3_lo; 4687 int res = 0; 4688 struct qlt_plogi_ack_t *pla; 4689 unsigned long flags; 4690 4691 lockdep_assert_held(&vha->hw->hardware_lock); 4692 4693 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4694 4695 port_id.b.domain = iocb->u.isp24.port_id[2]; 4696 port_id.b.area = iocb->u.isp24.port_id[1]; 4697 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4698 port_id.b.rsvd_1 = 0; 4699 4700 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4701 4702 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4703 abort_cmds_for_s_id(vha, &port_id); 4704 4705 if (wwn) { 4706 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4707 sess = qlt_find_sess_invalidate_other(vha, wwn, 4708 port_id, loop_id, &conflict_sess); 4709 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4710 } else { 4711 ql_dbg(ql_dbg_disc, vha, 0xffff, 4712 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4713 __func__, __LINE__, loop_id, port_id.b24); 4714 qlt_send_term_imm_notif(vha, iocb, 1); 4715 goto out; 4716 } 4717 4718 if (IS_SW_RESV_ADDR(port_id)) { 4719 res = 1; 4720 goto out; 4721 } 4722 4723 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4724 if (!pla) { 4725 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4726 "%s %d %8phC Term INOT due to mem alloc fail", 4727 __func__, __LINE__, 4728 iocb->u.isp24.port_name); 4729 qlt_send_term_imm_notif(vha, iocb, 1); 4730 goto out; 4731 } 4732 4733 if (conflict_sess) { 4734 conflict_sess->login_gen++; 4735 qlt_plogi_ack_link(vha, pla, conflict_sess, 4736 QLT_PLOGI_LINK_CONFLICT); 4737 } 4738 4739 if (!sess) { 4740 pla->ref_count++; 4741 ql_dbg(ql_dbg_disc, vha, 0xffff, 4742 "%s %d %8phC post new sess\n", 4743 __func__, __LINE__, iocb->u.isp24.port_name); 4744 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4745 qla24xx_post_newsess_work(vha, &port_id, 4746 iocb->u.isp24.port_name, 4747 iocb->u.isp24.u.plogi.node_name, 4748 pla, 0); 4749 else 4750 qla24xx_post_newsess_work(vha, &port_id, 4751 iocb->u.isp24.port_name, NULL, 4752 pla, 0); 4753 4754 goto out; 4755 } 4756 4757 if (sess->disc_state == DSC_UPD_FCPORT) { 4758 u16 sec; 4759 4760 /* 4761 * Remote port registration is still going on from 4762 * previous login. Allow it to finish before we 4763 * accept the new login. 4764 */ 4765 sess->next_disc_state = DSC_DELETE_PEND; 4766 sec = jiffies_to_msecs(jiffies - 4767 sess->jiffies_at_registration) / 1000; 4768 if (sess->sec_since_registration < sec && sec && 4769 !(sec % 5)) { 4770 sess->sec_since_registration = sec; 4771 ql_dbg(ql_dbg_disc, vha, 0xffff, 4772 "%s %8phC - Slow Rport registration (%d Sec)\n", 4773 __func__, sess->port_name, sec); 4774 } 4775 4776 if (!conflict_sess) { 4777 list_del(&pla->list); 4778 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4779 } 4780 4781 qlt_send_term_imm_notif(vha, iocb, 1); 4782 goto out; 4783 } 4784 4785 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4786 sess->d_id = port_id; 4787 sess->login_gen++; 4788 4789 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4790 sess->fw_login_state = DSC_LS_PRLI_PEND; 4791 sess->local = 0; 4792 sess->loop_id = loop_id; 4793 sess->d_id = port_id; 4794 sess->fw_login_state = DSC_LS_PRLI_PEND; 4795 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4796 4797 if (wd3_lo & BIT_7) 4798 sess->conf_compl_supported = 1; 4799 4800 if ((wd3_lo & BIT_4) == 0) 4801 sess->port_type = FCT_INITIATOR; 4802 else 4803 sess->port_type = FCT_TARGET; 4804 4805 } else 4806 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4807 4808 4809 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4810 "%s %d %8phC DS %d\n", 4811 __func__, __LINE__, sess->port_name, sess->disc_state); 4812 4813 switch (sess->disc_state) { 4814 case DSC_DELETED: 4815 case DSC_LOGIN_PEND: 4816 qlt_plogi_ack_unref(vha, pla); 4817 break; 4818 4819 default: 4820 /* 4821 * Under normal circumstances we want to release nport handle 4822 * during LOGO process to avoid nport handle leaks inside FW. 4823 * The exception is when LOGO is done while another PLOGI with 4824 * the same nport handle is waiting as might be the case here. 4825 * Note: there is always a possibily of a race where session 4826 * deletion has already started for other reasons (e.g. ACL 4827 * removal) and now PLOGI arrives: 4828 * 1. if PLOGI arrived in FW after nport handle has been freed, 4829 * FW must have assigned this PLOGI a new/same handle and we 4830 * can proceed ACK'ing it as usual when session deletion 4831 * completes. 4832 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4833 * bit reached it, the handle has now been released. We'll 4834 * get an error when we ACK this PLOGI. Nothing will be sent 4835 * back to initiator. Initiator should eventually retry 4836 * PLOGI and situation will correct itself. 4837 */ 4838 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4839 (sess->d_id.b24 == port_id.b24)); 4840 4841 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4842 "%s %d %8phC post del sess\n", 4843 __func__, __LINE__, sess->port_name); 4844 4845 4846 qlt_schedule_sess_for_deletion(sess); 4847 break; 4848 } 4849 out: 4850 return res; 4851 } 4852 4853 /* 4854 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4855 */ 4856 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4857 struct imm_ntfy_from_isp *iocb) 4858 { 4859 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4860 struct qla_hw_data *ha = vha->hw; 4861 struct fc_port *sess = NULL, *conflict_sess = NULL; 4862 uint64_t wwn; 4863 port_id_t port_id; 4864 uint16_t loop_id; 4865 uint16_t wd3_lo; 4866 int res = 0; 4867 unsigned long flags; 4868 4869 lockdep_assert_held(&ha->hardware_lock); 4870 4871 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4872 4873 port_id.b.domain = iocb->u.isp24.port_id[2]; 4874 port_id.b.area = iocb->u.isp24.port_id[1]; 4875 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4876 port_id.b.rsvd_1 = 0; 4877 4878 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4879 4880 ql_dbg(ql_dbg_disc, vha, 0xf026, 4881 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4882 vha->vp_idx, iocb->u.isp24.port_id[2], 4883 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4884 iocb->u.isp24.status_subcode, loop_id, 4885 iocb->u.isp24.port_name); 4886 4887 /* res = 1 means ack at the end of thread 4888 * res = 0 means ack async/later. 4889 */ 4890 switch (iocb->u.isp24.status_subcode) { 4891 case ELS_PLOGI: 4892 res = qlt_handle_login(vha, iocb); 4893 break; 4894 4895 case ELS_PRLI: 4896 if (N2N_TOPO(ha)) { 4897 sess = qla2x00_find_fcport_by_wwpn(vha, 4898 iocb->u.isp24.port_name, 1); 4899 4900 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4901 ql_dbg(ql_dbg_disc, vha, 0xffff, 4902 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4903 __func__, __LINE__, 4904 iocb->u.isp24.port_name); 4905 qlt_send_term_imm_notif(vha, iocb, 1); 4906 break; 4907 } 4908 4909 res = qlt_handle_login(vha, iocb); 4910 break; 4911 } 4912 4913 if (IS_SW_RESV_ADDR(port_id)) { 4914 res = 1; 4915 break; 4916 } 4917 4918 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4919 4920 if (wwn) { 4921 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4922 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4923 loop_id, &conflict_sess); 4924 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4925 } 4926 4927 if (conflict_sess) { 4928 switch (conflict_sess->disc_state) { 4929 case DSC_DELETED: 4930 case DSC_DELETE_PEND: 4931 break; 4932 default: 4933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4934 "PRLI with conflicting sess %p port %8phC\n", 4935 conflict_sess, conflict_sess->port_name); 4936 conflict_sess->fw_login_state = 4937 DSC_LS_PORT_UNAVAIL; 4938 qlt_send_term_imm_notif(vha, iocb, 1); 4939 res = 0; 4940 break; 4941 } 4942 } 4943 4944 if (sess != NULL) { 4945 bool delete = false; 4946 int sec; 4947 4948 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4949 switch (sess->fw_login_state) { 4950 case DSC_LS_PLOGI_PEND: 4951 case DSC_LS_PLOGI_COMP: 4952 case DSC_LS_PRLI_COMP: 4953 break; 4954 default: 4955 delete = true; 4956 break; 4957 } 4958 4959 switch (sess->disc_state) { 4960 case DSC_UPD_FCPORT: 4961 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4962 flags); 4963 4964 sec = jiffies_to_msecs(jiffies - 4965 sess->jiffies_at_registration)/1000; 4966 if (sess->sec_since_registration < sec && sec && 4967 !(sec % 5)) { 4968 sess->sec_since_registration = sec; 4969 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4970 "%s %8phC : Slow Rport registration(%d Sec)\n", 4971 __func__, sess->port_name, sec); 4972 } 4973 qlt_send_term_imm_notif(vha, iocb, 1); 4974 return 0; 4975 4976 case DSC_LOGIN_PEND: 4977 case DSC_GPDB: 4978 case DSC_LOGIN_COMPLETE: 4979 case DSC_ADISC: 4980 delete = false; 4981 break; 4982 default: 4983 break; 4984 } 4985 4986 if (delete) { 4987 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4988 flags); 4989 /* 4990 * Impatient initiator sent PRLI before last 4991 * PLOGI could finish. Will force him to re-try, 4992 * while last one finishes. 4993 */ 4994 ql_log(ql_log_warn, sess->vha, 0xf095, 4995 "sess %p PRLI received, before plogi ack.\n", 4996 sess); 4997 qlt_send_term_imm_notif(vha, iocb, 1); 4998 res = 0; 4999 break; 5000 } 5001 5002 /* 5003 * This shouldn't happen under normal circumstances, 5004 * since we have deleted the old session during PLOGI 5005 */ 5006 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5007 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5008 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5009 5010 sess->local = 0; 5011 sess->loop_id = loop_id; 5012 sess->d_id = port_id; 5013 sess->fw_login_state = DSC_LS_PRLI_PEND; 5014 5015 if (wd3_lo & BIT_7) 5016 sess->conf_compl_supported = 1; 5017 5018 if ((wd3_lo & BIT_4) == 0) 5019 sess->port_type = FCT_INITIATOR; 5020 else 5021 sess->port_type = FCT_TARGET; 5022 5023 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5024 } 5025 res = 1; /* send notify ack */ 5026 5027 /* Make session global (not used in fabric mode) */ 5028 if (ha->current_topology != ISP_CFG_F) { 5029 if (sess) { 5030 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5031 "%s %d %8phC post nack\n", 5032 __func__, __LINE__, sess->port_name); 5033 qla24xx_post_nack_work(vha, sess, iocb, 5034 SRB_NACK_PRLI); 5035 res = 0; 5036 } else { 5037 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5038 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5039 qla2xxx_wake_dpc(vha); 5040 } 5041 } else { 5042 if (sess) { 5043 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5044 "%s %d %8phC post nack\n", 5045 __func__, __LINE__, sess->port_name); 5046 qla24xx_post_nack_work(vha, sess, iocb, 5047 SRB_NACK_PRLI); 5048 res = 0; 5049 } 5050 } 5051 break; 5052 5053 case ELS_TPRLO: 5054 if (le16_to_cpu(iocb->u.isp24.flags) & 5055 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5056 loop_id = 0xFFFF; 5057 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5058 res = 1; 5059 break; 5060 } 5061 fallthrough; 5062 case ELS_LOGO: 5063 case ELS_PRLO: 5064 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5065 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5066 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5067 5068 if (sess) { 5069 sess->login_gen++; 5070 sess->fw_login_state = DSC_LS_LOGO_PEND; 5071 sess->logo_ack_needed = 1; 5072 memcpy(sess->iocb, iocb, IOCB_SIZE); 5073 } 5074 5075 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5076 5077 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5078 "%s: logo %llx res %d sess %p ", 5079 __func__, wwn, res, sess); 5080 if (res == 0) { 5081 /* 5082 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5083 * for LOGO_ACK & sess delete 5084 */ 5085 BUG_ON(!sess); 5086 res = 0; 5087 } else { 5088 /* cmd did not go to upper layer. */ 5089 if (sess) { 5090 qlt_schedule_sess_for_deletion(sess); 5091 res = 0; 5092 } 5093 /* else logo will be ack */ 5094 } 5095 break; 5096 case ELS_PDISC: 5097 case ELS_ADISC: 5098 { 5099 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5100 5101 if (tgt->link_reinit_iocb_pending) { 5102 qlt_send_notify_ack(ha->base_qpair, 5103 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5104 tgt->link_reinit_iocb_pending = 0; 5105 } 5106 5107 sess = qla2x00_find_fcport_by_wwpn(vha, 5108 iocb->u.isp24.port_name, 1); 5109 if (sess) { 5110 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5111 "sess %p lid %d|%d DS %d LS %d\n", 5112 sess, sess->loop_id, loop_id, 5113 sess->disc_state, sess->fw_login_state); 5114 } 5115 5116 res = 1; /* send notify ack */ 5117 break; 5118 } 5119 5120 case ELS_FLOGI: /* should never happen */ 5121 default: 5122 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5123 "qla_target(%d): Unsupported ELS command %x " 5124 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5125 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5126 break; 5127 } 5128 5129 ql_dbg(ql_dbg_disc, vha, 0xf026, 5130 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5131 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5132 5133 return res; 5134 } 5135 5136 /* 5137 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5138 */ 5139 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5140 struct imm_ntfy_from_isp *iocb) 5141 { 5142 struct qla_hw_data *ha = vha->hw; 5143 uint32_t add_flags = 0; 5144 int send_notify_ack = 1; 5145 uint16_t status; 5146 5147 lockdep_assert_held(&ha->hardware_lock); 5148 5149 status = le16_to_cpu(iocb->u.isp2x.status); 5150 switch (status) { 5151 case IMM_NTFY_LIP_RESET: 5152 { 5153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5154 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5155 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5156 iocb->u.isp24.status_subcode); 5157 5158 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5159 send_notify_ack = 0; 5160 break; 5161 } 5162 5163 case IMM_NTFY_LIP_LINK_REINIT: 5164 { 5165 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5166 5167 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5168 "qla_target(%d): LINK REINIT (loop %#x, " 5169 "subcode %x)\n", vha->vp_idx, 5170 le16_to_cpu(iocb->u.isp24.nport_handle), 5171 iocb->u.isp24.status_subcode); 5172 if (tgt->link_reinit_iocb_pending) { 5173 qlt_send_notify_ack(ha->base_qpair, 5174 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5175 } 5176 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5177 tgt->link_reinit_iocb_pending = 1; 5178 /* 5179 * QLogic requires to wait after LINK REINIT for possible 5180 * PDISC or ADISC ELS commands 5181 */ 5182 send_notify_ack = 0; 5183 break; 5184 } 5185 5186 case IMM_NTFY_PORT_LOGOUT: 5187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5188 "qla_target(%d): Port logout (loop " 5189 "%#x, subcode %x)\n", vha->vp_idx, 5190 le16_to_cpu(iocb->u.isp24.nport_handle), 5191 iocb->u.isp24.status_subcode); 5192 5193 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5194 send_notify_ack = 0; 5195 /* The sessions will be cleared in the callback, if needed */ 5196 break; 5197 5198 case IMM_NTFY_GLBL_TPRLO: 5199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5200 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5201 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5202 send_notify_ack = 0; 5203 /* The sessions will be cleared in the callback, if needed */ 5204 break; 5205 5206 case IMM_NTFY_PORT_CONFIG: 5207 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5208 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5209 status); 5210 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5211 send_notify_ack = 0; 5212 /* The sessions will be cleared in the callback, if needed */ 5213 break; 5214 5215 case IMM_NTFY_GLBL_LOGO: 5216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5217 "qla_target(%d): Link failure detected\n", 5218 vha->vp_idx); 5219 /* I_T nexus loss */ 5220 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5221 send_notify_ack = 0; 5222 break; 5223 5224 case IMM_NTFY_IOCB_OVERFLOW: 5225 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5226 "qla_target(%d): Cannot provide requested " 5227 "capability (IOCB overflowed the immediate notify " 5228 "resource count)\n", vha->vp_idx); 5229 break; 5230 5231 case IMM_NTFY_ABORT_TASK: 5232 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5233 "qla_target(%d): Abort Task (S %08x I %#x -> " 5234 "L %#x)\n", vha->vp_idx, 5235 le16_to_cpu(iocb->u.isp2x.seq_id), 5236 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5237 le16_to_cpu(iocb->u.isp2x.lun)); 5238 if (qlt_abort_task(vha, iocb) == 0) 5239 send_notify_ack = 0; 5240 break; 5241 5242 case IMM_NTFY_RESOURCE: 5243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5244 "qla_target(%d): Out of resources, host %ld\n", 5245 vha->vp_idx, vha->host_no); 5246 break; 5247 5248 case IMM_NTFY_MSG_RX: 5249 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5250 "qla_target(%d): Immediate notify task %x\n", 5251 vha->vp_idx, iocb->u.isp2x.task_flags); 5252 break; 5253 5254 case IMM_NTFY_ELS: 5255 if (qlt_24xx_handle_els(vha, iocb) == 0) 5256 send_notify_ack = 0; 5257 break; 5258 default: 5259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5260 "qla_target(%d): Received unknown immediate " 5261 "notify status %x\n", vha->vp_idx, status); 5262 break; 5263 } 5264 5265 if (send_notify_ack) 5266 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5267 0, 0); 5268 } 5269 5270 /* 5271 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5272 * This function sends busy to ISP 2xxx or 24xx. 5273 */ 5274 static int __qlt_send_busy(struct qla_qpair *qpair, 5275 struct atio_from_isp *atio, uint16_t status) 5276 { 5277 struct scsi_qla_host *vha = qpair->vha; 5278 struct ctio7_to_24xx *ctio24; 5279 struct qla_hw_data *ha = vha->hw; 5280 request_t *pkt; 5281 struct fc_port *sess = NULL; 5282 unsigned long flags; 5283 u16 temp; 5284 port_id_t id; 5285 5286 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5287 5288 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5289 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5290 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5291 if (!sess) { 5292 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5293 return 0; 5294 } 5295 /* Sending marker isn't necessary, since we called from ISR */ 5296 5297 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5298 if (!pkt) { 5299 ql_dbg(ql_dbg_io, vha, 0x3063, 5300 "qla_target(%d): %s failed: unable to allocate " 5301 "request packet", vha->vp_idx, __func__); 5302 return -ENOMEM; 5303 } 5304 5305 qpair->tgt_counters.num_q_full_sent++; 5306 pkt->entry_count = 1; 5307 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5308 5309 ctio24 = (struct ctio7_to_24xx *)pkt; 5310 ctio24->entry_type = CTIO_TYPE7; 5311 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5312 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5313 ctio24->vp_index = vha->vp_idx; 5314 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5315 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5316 temp = (atio->u.isp24.attr << 9) | 5317 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5318 CTIO7_FLAGS_DONT_RET_CTIO; 5319 ctio24->u.status1.flags = cpu_to_le16(temp); 5320 /* 5321 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5322 * if the explicit conformation is used. 5323 */ 5324 ctio24->u.status1.ox_id = 5325 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5326 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5327 5328 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5329 5330 if (ctio24->u.status1.residual != 0) 5331 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5332 5333 /* Memory Barrier */ 5334 wmb(); 5335 if (qpair->reqq_start_iocbs) 5336 qpair->reqq_start_iocbs(qpair); 5337 else 5338 qla2x00_start_iocbs(vha, qpair->req); 5339 return 0; 5340 } 5341 5342 /* 5343 * This routine is used to allocate a command for either a QFull condition 5344 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5345 * out previously. 5346 */ 5347 static void 5348 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5349 struct atio_from_isp *atio, uint16_t status, int qfull) 5350 { 5351 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5352 struct qla_hw_data *ha = vha->hw; 5353 struct fc_port *sess; 5354 struct qla_tgt_cmd *cmd; 5355 unsigned long flags; 5356 5357 if (unlikely(tgt->tgt_stop)) { 5358 ql_dbg(ql_dbg_io, vha, 0x300a, 5359 "New command while device %p is shutting down\n", tgt); 5360 return; 5361 } 5362 5363 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5364 vha->hw->tgt.num_qfull_cmds_dropped++; 5365 if (vha->hw->tgt.num_qfull_cmds_dropped > 5366 vha->qla_stats.stat_max_qfull_cmds_dropped) 5367 vha->qla_stats.stat_max_qfull_cmds_dropped = 5368 vha->hw->tgt.num_qfull_cmds_dropped; 5369 5370 ql_dbg(ql_dbg_io, vha, 0x3068, 5371 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5372 vha->vp_idx, __func__, 5373 vha->hw->tgt.num_qfull_cmds_dropped); 5374 5375 qlt_chk_exch_leak_thresh_hold(vha); 5376 return; 5377 } 5378 5379 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5380 (vha, atio->u.isp24.fcp_hdr.s_id); 5381 if (!sess) 5382 return; 5383 5384 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5385 if (!cmd) { 5386 ql_dbg(ql_dbg_io, vha, 0x3009, 5387 "qla_target(%d): %s: Allocation of cmd failed\n", 5388 vha->vp_idx, __func__); 5389 5390 vha->hw->tgt.num_qfull_cmds_dropped++; 5391 if (vha->hw->tgt.num_qfull_cmds_dropped > 5392 vha->qla_stats.stat_max_qfull_cmds_dropped) 5393 vha->qla_stats.stat_max_qfull_cmds_dropped = 5394 vha->hw->tgt.num_qfull_cmds_dropped; 5395 5396 qlt_chk_exch_leak_thresh_hold(vha); 5397 return; 5398 } 5399 5400 qlt_incr_num_pend_cmds(vha); 5401 INIT_LIST_HEAD(&cmd->cmd_list); 5402 memcpy(&cmd->atio, atio, sizeof(*atio)); 5403 5404 cmd->tgt = vha->vha_tgt.qla_tgt; 5405 cmd->vha = vha; 5406 cmd->reset_count = ha->base_qpair->chip_reset; 5407 cmd->q_full = 1; 5408 cmd->qpair = ha->base_qpair; 5409 5410 if (qfull) { 5411 cmd->q_full = 1; 5412 /* NOTE: borrowing the state field to carry the status */ 5413 cmd->state = status; 5414 } else 5415 cmd->term_exchg = 1; 5416 5417 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5418 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5419 5420 vha->hw->tgt.num_qfull_cmds_alloc++; 5421 if (vha->hw->tgt.num_qfull_cmds_alloc > 5422 vha->qla_stats.stat_max_qfull_cmds_alloc) 5423 vha->qla_stats.stat_max_qfull_cmds_alloc = 5424 vha->hw->tgt.num_qfull_cmds_alloc; 5425 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5426 } 5427 5428 int 5429 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5430 { 5431 struct scsi_qla_host *vha = qpair->vha; 5432 struct qla_hw_data *ha = vha->hw; 5433 unsigned long flags; 5434 struct qla_tgt_cmd *cmd, *tcmd; 5435 struct list_head free_list, q_full_list; 5436 int rc = 0; 5437 5438 if (list_empty(&ha->tgt.q_full_list)) 5439 return 0; 5440 5441 INIT_LIST_HEAD(&free_list); 5442 INIT_LIST_HEAD(&q_full_list); 5443 5444 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5445 if (list_empty(&ha->tgt.q_full_list)) { 5446 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5447 return 0; 5448 } 5449 5450 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5451 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5452 5453 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5454 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5455 if (cmd->q_full) 5456 /* cmd->state is a borrowed field to hold status */ 5457 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5458 else if (cmd->term_exchg) 5459 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5460 5461 if (rc == -ENOMEM) 5462 break; 5463 5464 if (cmd->q_full) 5465 ql_dbg(ql_dbg_io, vha, 0x3006, 5466 "%s: busy sent for ox_id[%04x]\n", __func__, 5467 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5468 else if (cmd->term_exchg) 5469 ql_dbg(ql_dbg_io, vha, 0x3007, 5470 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5471 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5472 else 5473 ql_dbg(ql_dbg_io, vha, 0x3008, 5474 "%s: Unexpected cmd in QFull list %p\n", __func__, 5475 cmd); 5476 5477 list_del(&cmd->cmd_list); 5478 list_add_tail(&cmd->cmd_list, &free_list); 5479 5480 /* piggy back on hardware_lock for protection */ 5481 vha->hw->tgt.num_qfull_cmds_alloc--; 5482 } 5483 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5484 5485 cmd = NULL; 5486 5487 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5488 list_del(&cmd->cmd_list); 5489 /* This cmd was never sent to TCM. There is no need 5490 * to schedule free or call free_cmd 5491 */ 5492 qlt_free_cmd(cmd); 5493 } 5494 5495 if (!list_empty(&q_full_list)) { 5496 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5497 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5498 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5499 } 5500 5501 return rc; 5502 } 5503 5504 static void 5505 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5506 uint16_t status) 5507 { 5508 int rc = 0; 5509 struct scsi_qla_host *vha = qpair->vha; 5510 5511 rc = __qlt_send_busy(qpair, atio, status); 5512 if (rc == -ENOMEM) 5513 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5514 } 5515 5516 static int 5517 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5518 struct atio_from_isp *atio, uint8_t ha_locked) 5519 { 5520 struct qla_hw_data *ha = vha->hw; 5521 unsigned long flags; 5522 5523 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5524 return 0; 5525 5526 if (!ha_locked) 5527 spin_lock_irqsave(&ha->hardware_lock, flags); 5528 qlt_send_busy(qpair, atio, qla_sam_status); 5529 if (!ha_locked) 5530 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5531 5532 return 1; 5533 } 5534 5535 /* ha->hardware_lock supposed to be held on entry */ 5536 /* called via callback from qla2xxx */ 5537 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5538 struct atio_from_isp *atio, uint8_t ha_locked) 5539 { 5540 struct qla_hw_data *ha = vha->hw; 5541 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5542 int rc; 5543 unsigned long flags = 0; 5544 5545 if (unlikely(tgt == NULL)) { 5546 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5547 "ATIO pkt, but no tgt (ha %p)", ha); 5548 return; 5549 } 5550 /* 5551 * In tgt_stop mode we also should allow all requests to pass. 5552 * Otherwise, some commands can stuck. 5553 */ 5554 5555 tgt->atio_irq_cmd_count++; 5556 5557 switch (atio->u.raw.entry_type) { 5558 case ATIO_TYPE7: 5559 if (unlikely(atio->u.isp24.exchange_addr == 5560 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5561 ql_dbg(ql_dbg_io, vha, 0x3065, 5562 "qla_target(%d): ATIO_TYPE7 " 5563 "received with UNKNOWN exchange address, " 5564 "sending QUEUE_FULL\n", vha->vp_idx); 5565 if (!ha_locked) 5566 spin_lock_irqsave(&ha->hardware_lock, flags); 5567 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5568 if (!ha_locked) 5569 spin_unlock_irqrestore(&ha->hardware_lock, 5570 flags); 5571 break; 5572 } 5573 5574 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5575 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5576 atio, ha_locked); 5577 if (rc != 0) { 5578 tgt->atio_irq_cmd_count--; 5579 return; 5580 } 5581 rc = qlt_handle_cmd_for_atio(vha, atio); 5582 } else { 5583 rc = qlt_handle_task_mgmt(vha, atio); 5584 } 5585 if (unlikely(rc != 0)) { 5586 if (!ha_locked) 5587 spin_lock_irqsave(&ha->hardware_lock, flags); 5588 switch (rc) { 5589 case -ENODEV: 5590 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5591 "qla_target: Unable to send command to target\n"); 5592 break; 5593 case -EBADF: 5594 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5595 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5596 qlt_send_term_exchange(ha->base_qpair, NULL, 5597 atio, 1, 0); 5598 break; 5599 case -EBUSY: 5600 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5601 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5602 vha->vp_idx); 5603 qlt_send_busy(ha->base_qpair, atio, 5604 tc_sam_status); 5605 break; 5606 default: 5607 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5608 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5609 vha->vp_idx); 5610 qlt_send_busy(ha->base_qpair, atio, 5611 qla_sam_status); 5612 break; 5613 } 5614 if (!ha_locked) 5615 spin_unlock_irqrestore(&ha->hardware_lock, 5616 flags); 5617 } 5618 break; 5619 5620 case IMMED_NOTIFY_TYPE: 5621 { 5622 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5623 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5624 "qla_target(%d): Received ATIO packet %x " 5625 "with error status %x\n", vha->vp_idx, 5626 atio->u.raw.entry_type, 5627 atio->u.isp2x.entry_status); 5628 break; 5629 } 5630 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5631 5632 if (!ha_locked) 5633 spin_lock_irqsave(&ha->hardware_lock, flags); 5634 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5635 if (!ha_locked) 5636 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5637 break; 5638 } 5639 5640 default: 5641 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5642 "qla_target(%d): Received unknown ATIO atio " 5643 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5644 break; 5645 } 5646 5647 tgt->atio_irq_cmd_count--; 5648 } 5649 5650 /* 5651 * qpair lock is assume to be held 5652 * rc = 0 : send terminate & abts respond 5653 * rc != 0: do not send term & abts respond 5654 */ 5655 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5656 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5657 { 5658 struct qla_hw_data *ha = vha->hw; 5659 int rc = 0; 5660 5661 /* 5662 * Detect unresolved exchange. If the same ABTS is unable 5663 * to terminate an existing command and the same ABTS loops 5664 * between FW & Driver, then force FW dump. Under 1 jiff, 5665 * we should see multiple loops. 5666 */ 5667 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5668 qpair->retry_term_jiff == jiffies) { 5669 /* found existing exchange */ 5670 qpair->retry_term_cnt++; 5671 if (qpair->retry_term_cnt >= 5) { 5672 rc = -EIO; 5673 qpair->retry_term_cnt = 0; 5674 ql_log(ql_log_warn, vha, 0xffff, 5675 "Unable to send ABTS Respond. Dumping firmware.\n"); 5676 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5677 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5678 5679 if (qpair == ha->base_qpair) 5680 ha->isp_ops->fw_dump(vha); 5681 else 5682 qla2xxx_dump_fw(vha); 5683 5684 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5685 qla2xxx_wake_dpc(vha); 5686 } 5687 } else if (qpair->retry_term_jiff != jiffies) { 5688 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5689 qpair->retry_term_cnt = 0; 5690 qpair->retry_term_jiff = jiffies; 5691 } 5692 5693 return rc; 5694 } 5695 5696 5697 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5698 struct rsp_que *rsp, response_t *pkt) 5699 { 5700 struct abts_resp_from_24xx_fw *entry = 5701 (struct abts_resp_from_24xx_fw *)pkt; 5702 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5703 struct qla_tgt_mgmt_cmd *mcmd; 5704 struct qla_hw_data *ha = vha->hw; 5705 5706 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5707 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5708 ql_dbg(ql_dbg_async, vha, 0xe064, 5709 "qla_target(%d): ABTS Comp without mcmd\n", 5710 vha->vp_idx); 5711 return; 5712 } 5713 5714 if (mcmd) 5715 vha = mcmd->vha; 5716 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5717 5718 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5719 "ABTS_RESP_24XX: compl_status %x\n", 5720 entry->compl_status); 5721 5722 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5723 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5724 le32_to_cpu(entry->error_subcode2) == 0) { 5725 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5726 ha->tgt.tgt_ops->free_mcmd(mcmd); 5727 return; 5728 } 5729 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5730 pkt, mcmd); 5731 } else { 5732 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5733 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5734 vha->vp_idx, entry->compl_status, 5735 entry->error_subcode1, 5736 entry->error_subcode2); 5737 ha->tgt.tgt_ops->free_mcmd(mcmd); 5738 } 5739 } else if (mcmd) { 5740 ha->tgt.tgt_ops->free_mcmd(mcmd); 5741 } 5742 } 5743 5744 /* ha->hardware_lock supposed to be held on entry */ 5745 /* called via callback from qla2xxx */ 5746 static void qlt_response_pkt(struct scsi_qla_host *vha, 5747 struct rsp_que *rsp, response_t *pkt) 5748 { 5749 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5750 5751 if (unlikely(tgt == NULL)) { 5752 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5753 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5754 vha->vp_idx, pkt->entry_type, vha->hw); 5755 return; 5756 } 5757 5758 /* 5759 * In tgt_stop mode we also should allow all requests to pass. 5760 * Otherwise, some commands can stuck. 5761 */ 5762 5763 switch (pkt->entry_type) { 5764 case CTIO_CRC2: 5765 case CTIO_TYPE7: 5766 { 5767 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5768 5769 qlt_do_ctio_completion(vha, rsp, entry->handle, 5770 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5771 entry); 5772 break; 5773 } 5774 5775 case ACCEPT_TGT_IO_TYPE: 5776 { 5777 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5778 int rc; 5779 5780 if (atio->u.isp2x.status != 5781 cpu_to_le16(ATIO_CDB_VALID)) { 5782 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5783 "qla_target(%d): ATIO with error " 5784 "status %x received\n", vha->vp_idx, 5785 le16_to_cpu(atio->u.isp2x.status)); 5786 break; 5787 } 5788 5789 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5790 if (rc != 0) 5791 return; 5792 5793 rc = qlt_handle_cmd_for_atio(vha, atio); 5794 if (unlikely(rc != 0)) { 5795 switch (rc) { 5796 case -ENODEV: 5797 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5798 "qla_target: Unable to send command to target\n"); 5799 break; 5800 case -EBADF: 5801 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5802 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5803 qlt_send_term_exchange(rsp->qpair, NULL, 5804 atio, 1, 0); 5805 break; 5806 case -EBUSY: 5807 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5808 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5809 vha->vp_idx); 5810 qlt_send_busy(rsp->qpair, atio, 5811 tc_sam_status); 5812 break; 5813 default: 5814 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5815 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5816 vha->vp_idx); 5817 qlt_send_busy(rsp->qpair, atio, 5818 qla_sam_status); 5819 break; 5820 } 5821 } 5822 } 5823 break; 5824 5825 case CONTINUE_TGT_IO_TYPE: 5826 { 5827 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5828 5829 qlt_do_ctio_completion(vha, rsp, entry->handle, 5830 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5831 entry); 5832 break; 5833 } 5834 5835 case CTIO_A64_TYPE: 5836 { 5837 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5838 5839 qlt_do_ctio_completion(vha, rsp, entry->handle, 5840 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5841 entry); 5842 break; 5843 } 5844 5845 case IMMED_NOTIFY_TYPE: 5846 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5847 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5848 break; 5849 5850 case NOTIFY_ACK_TYPE: 5851 if (tgt->notify_ack_expected > 0) { 5852 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5853 5854 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5855 "NOTIFY_ACK seq %08x status %x\n", 5856 le16_to_cpu(entry->u.isp2x.seq_id), 5857 le16_to_cpu(entry->u.isp2x.status)); 5858 tgt->notify_ack_expected--; 5859 if (entry->u.isp2x.status != 5860 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5861 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5862 "qla_target(%d): NOTIFY_ACK " 5863 "failed %x\n", vha->vp_idx, 5864 le16_to_cpu(entry->u.isp2x.status)); 5865 } 5866 } else { 5867 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5868 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5869 vha->vp_idx); 5870 } 5871 break; 5872 5873 case ABTS_RECV_24XX: 5874 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5875 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5876 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5877 break; 5878 5879 case ABTS_RESP_24XX: 5880 if (tgt->abts_resp_expected > 0) { 5881 qlt_handle_abts_completion(vha, rsp, pkt); 5882 } else { 5883 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5884 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5885 "received\n", vha->vp_idx); 5886 } 5887 break; 5888 5889 default: 5890 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5891 "qla_target(%d): Received unknown response pkt " 5892 "type %x\n", vha->vp_idx, pkt->entry_type); 5893 break; 5894 } 5895 5896 } 5897 5898 /* 5899 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5900 */ 5901 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5902 uint16_t *mailbox) 5903 { 5904 struct qla_hw_data *ha = vha->hw; 5905 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5906 int login_code; 5907 5908 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5909 return; 5910 5911 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5912 IS_QLA2100(ha)) 5913 return; 5914 /* 5915 * In tgt_stop mode we also should allow all requests to pass. 5916 * Otherwise, some commands can stuck. 5917 */ 5918 5919 5920 switch (code) { 5921 case MBA_RESET: /* Reset */ 5922 case MBA_SYSTEM_ERR: /* System Error */ 5923 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5924 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5925 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5926 "qla_target(%d): System error async event %#x " 5927 "occurred", vha->vp_idx, code); 5928 break; 5929 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5930 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5931 break; 5932 5933 case MBA_LOOP_UP: 5934 { 5935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5936 "qla_target(%d): Async LOOP_UP occurred " 5937 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5938 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5939 if (tgt->link_reinit_iocb_pending) { 5940 qlt_send_notify_ack(ha->base_qpair, 5941 &tgt->link_reinit_iocb, 5942 0, 0, 0, 0, 0, 0); 5943 tgt->link_reinit_iocb_pending = 0; 5944 } 5945 break; 5946 } 5947 5948 case MBA_LIP_OCCURRED: 5949 case MBA_LOOP_DOWN: 5950 case MBA_LIP_RESET: 5951 case MBA_RSCN_UPDATE: 5952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5953 "qla_target(%d): Async event %#x occurred " 5954 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5955 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5956 break; 5957 5958 case MBA_REJECTED_FCP_CMD: 5959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5960 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5961 vha->vp_idx, 5962 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5963 5964 if (mailbox[3] == 1) { 5965 /* exchange starvation. */ 5966 vha->hw->exch_starvation++; 5967 if (vha->hw->exch_starvation > 5) { 5968 ql_log(ql_log_warn, vha, 0xd03a, 5969 "Exchange starvation-. Resetting RISC\n"); 5970 5971 vha->hw->exch_starvation = 0; 5972 if (IS_P3P_TYPE(vha->hw)) 5973 set_bit(FCOE_CTX_RESET_NEEDED, 5974 &vha->dpc_flags); 5975 else 5976 set_bit(ISP_ABORT_NEEDED, 5977 &vha->dpc_flags); 5978 qla2xxx_wake_dpc(vha); 5979 } 5980 } 5981 break; 5982 5983 case MBA_PORT_UPDATE: 5984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5985 "qla_target(%d): Port update async event %#x " 5986 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5987 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5988 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5989 5990 login_code = mailbox[2]; 5991 if (login_code == 0x4) { 5992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5993 "Async MB 2: Got PLOGI Complete\n"); 5994 vha->hw->exch_starvation = 0; 5995 } else if (login_code == 0x7) 5996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5997 "Async MB 2: Port Logged Out\n"); 5998 break; 5999 default: 6000 break; 6001 } 6002 6003 } 6004 6005 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6006 uint16_t loop_id) 6007 { 6008 fc_port_t *fcport, *tfcp, *del; 6009 int rc; 6010 unsigned long flags; 6011 u8 newfcport = 0; 6012 6013 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6014 if (!fcport) { 6015 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6016 "qla_target(%d): Allocation of tmp FC port failed", 6017 vha->vp_idx); 6018 return NULL; 6019 } 6020 6021 fcport->loop_id = loop_id; 6022 6023 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6024 if (rc != QLA_SUCCESS) { 6025 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6026 "qla_target(%d): Failed to retrieve fcport " 6027 "information -- get_port_database() returned %x " 6028 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6029 kfree(fcport); 6030 return NULL; 6031 } 6032 6033 del = NULL; 6034 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6035 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6036 6037 if (tfcp) { 6038 tfcp->d_id = fcport->d_id; 6039 tfcp->port_type = fcport->port_type; 6040 tfcp->supported_classes = fcport->supported_classes; 6041 tfcp->flags |= fcport->flags; 6042 tfcp->scan_state = QLA_FCPORT_FOUND; 6043 6044 del = fcport; 6045 fcport = tfcp; 6046 } else { 6047 if (vha->hw->current_topology == ISP_CFG_F) 6048 fcport->flags |= FCF_FABRIC_DEVICE; 6049 6050 list_add_tail(&fcport->list, &vha->vp_fcports); 6051 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6052 vha->fcport_count++; 6053 fcport->login_gen++; 6054 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6055 fcport->login_succ = 1; 6056 newfcport = 1; 6057 } 6058 6059 fcport->deleted = 0; 6060 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6061 6062 switch (vha->host->active_mode) { 6063 case MODE_INITIATOR: 6064 case MODE_DUAL: 6065 if (newfcport) { 6066 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6067 qla24xx_sched_upd_fcport(fcport); 6068 } else { 6069 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6070 "%s %d %8phC post gpsc fcp_cnt %d\n", 6071 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6072 qla24xx_post_gpsc_work(vha, fcport); 6073 } 6074 } 6075 break; 6076 6077 case MODE_TARGET: 6078 default: 6079 break; 6080 } 6081 if (del) 6082 qla2x00_free_fcport(del); 6083 6084 return fcport; 6085 } 6086 6087 /* Must be called under tgt_mutex */ 6088 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6089 be_id_t s_id) 6090 { 6091 struct fc_port *sess = NULL; 6092 fc_port_t *fcport = NULL; 6093 int rc, global_resets; 6094 uint16_t loop_id = 0; 6095 6096 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6097 /* 6098 * This is Domain Controller, so it should be 6099 * OK to drop SCSI commands from it. 6100 */ 6101 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6102 "Unable to find initiator with S_ID %x:%x:%x", 6103 s_id.domain, s_id.area, s_id.al_pa); 6104 return NULL; 6105 } 6106 6107 mutex_lock(&vha->vha_tgt.tgt_mutex); 6108 6109 retry: 6110 global_resets = 6111 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6112 6113 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6114 if (rc != 0) { 6115 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6116 6117 ql_log(ql_log_info, vha, 0xf071, 6118 "qla_target(%d): Unable to find " 6119 "initiator with S_ID %x:%x:%x", 6120 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6121 6122 if (rc == -ENOENT) { 6123 qlt_port_logo_t logo; 6124 6125 logo.id = be_to_port_id(s_id); 6126 logo.cmd_count = 1; 6127 qlt_send_first_logo(vha, &logo); 6128 } 6129 6130 return NULL; 6131 } 6132 6133 fcport = qlt_get_port_database(vha, loop_id); 6134 if (!fcport) { 6135 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6136 return NULL; 6137 } 6138 6139 if (global_resets != 6140 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6142 "qla_target(%d): global reset during session discovery " 6143 "(counter was %d, new %d), retrying", vha->vp_idx, 6144 global_resets, 6145 atomic_read(&vha->vha_tgt. 6146 qla_tgt->tgt_global_resets_count)); 6147 goto retry; 6148 } 6149 6150 sess = qlt_create_sess(vha, fcport, true); 6151 6152 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6153 6154 return sess; 6155 } 6156 6157 static void qlt_abort_work(struct qla_tgt *tgt, 6158 struct qla_tgt_sess_work_param *prm) 6159 { 6160 struct scsi_qla_host *vha = tgt->vha; 6161 struct qla_hw_data *ha = vha->hw; 6162 struct fc_port *sess = NULL; 6163 unsigned long flags = 0, flags2 = 0; 6164 be_id_t s_id; 6165 int rc; 6166 6167 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6168 6169 if (tgt->tgt_stop) 6170 goto out_term2; 6171 6172 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6173 6174 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6175 if (!sess) { 6176 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6177 6178 sess = qlt_make_local_sess(vha, s_id); 6179 /* sess has got an extra creation ref */ 6180 6181 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6182 if (!sess) 6183 goto out_term2; 6184 } else { 6185 if (sess->deleted) { 6186 sess = NULL; 6187 goto out_term2; 6188 } 6189 6190 if (!kref_get_unless_zero(&sess->sess_kref)) { 6191 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6192 "%s: kref_get fail %8phC \n", 6193 __func__, sess->port_name); 6194 sess = NULL; 6195 goto out_term2; 6196 } 6197 } 6198 6199 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6200 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6201 6202 ha->tgt.tgt_ops->put_sess(sess); 6203 6204 if (rc != 0) 6205 goto out_term; 6206 return; 6207 6208 out_term2: 6209 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6210 6211 out_term: 6212 spin_lock_irqsave(&ha->hardware_lock, flags); 6213 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6214 FCP_TMF_REJECTED, false); 6215 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6216 } 6217 6218 static void qlt_tmr_work(struct qla_tgt *tgt, 6219 struct qla_tgt_sess_work_param *prm) 6220 { 6221 struct atio_from_isp *a = &prm->tm_iocb2; 6222 struct scsi_qla_host *vha = tgt->vha; 6223 struct qla_hw_data *ha = vha->hw; 6224 struct fc_port *sess; 6225 unsigned long flags; 6226 be_id_t s_id; 6227 int rc; 6228 u64 unpacked_lun; 6229 int fn; 6230 void *iocb; 6231 6232 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6233 6234 if (tgt->tgt_stop) 6235 goto out_term2; 6236 6237 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6238 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6239 if (!sess) { 6240 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6241 6242 sess = qlt_make_local_sess(vha, s_id); 6243 /* sess has got an extra creation ref */ 6244 6245 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6246 if (!sess) 6247 goto out_term2; 6248 } else { 6249 if (sess->deleted) { 6250 goto out_term2; 6251 } 6252 6253 if (!kref_get_unless_zero(&sess->sess_kref)) { 6254 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6255 "%s: kref_get fail %8phC\n", 6256 __func__, sess->port_name); 6257 goto out_term2; 6258 } 6259 } 6260 6261 iocb = a; 6262 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6263 unpacked_lun = 6264 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6265 6266 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6267 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6268 6269 ha->tgt.tgt_ops->put_sess(sess); 6270 6271 if (rc != 0) 6272 goto out_term; 6273 return; 6274 6275 out_term2: 6276 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6277 out_term: 6278 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6279 } 6280 6281 static void qlt_sess_work_fn(struct work_struct *work) 6282 { 6283 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6284 struct scsi_qla_host *vha = tgt->vha; 6285 unsigned long flags; 6286 6287 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6288 6289 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6290 while (!list_empty(&tgt->sess_works_list)) { 6291 struct qla_tgt_sess_work_param *prm = list_entry( 6292 tgt->sess_works_list.next, typeof(*prm), 6293 sess_works_list_entry); 6294 6295 /* 6296 * This work can be scheduled on several CPUs at time, so we 6297 * must delete the entry to eliminate double processing 6298 */ 6299 list_del(&prm->sess_works_list_entry); 6300 6301 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6302 6303 switch (prm->type) { 6304 case QLA_TGT_SESS_WORK_ABORT: 6305 qlt_abort_work(tgt, prm); 6306 break; 6307 case QLA_TGT_SESS_WORK_TM: 6308 qlt_tmr_work(tgt, prm); 6309 break; 6310 default: 6311 BUG_ON(1); 6312 break; 6313 } 6314 6315 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6316 6317 kfree(prm); 6318 } 6319 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6320 } 6321 6322 /* Must be called under tgt_host_action_mutex */ 6323 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6324 { 6325 struct qla_tgt *tgt; 6326 int rc, i; 6327 struct qla_qpair_hint *h; 6328 6329 if (!QLA_TGT_MODE_ENABLED()) 6330 return 0; 6331 6332 if (!IS_TGT_MODE_CAPABLE(ha)) { 6333 ql_log(ql_log_warn, base_vha, 0xe070, 6334 "This adapter does not support target mode.\n"); 6335 return 0; 6336 } 6337 6338 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6339 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6340 6341 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6342 6343 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6344 if (!tgt) { 6345 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6346 "Unable to allocate struct qla_tgt\n"); 6347 return -ENOMEM; 6348 } 6349 6350 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6351 sizeof(struct qla_qpair_hint), 6352 GFP_KERNEL); 6353 if (!tgt->qphints) { 6354 kfree(tgt); 6355 ql_log(ql_log_warn, base_vha, 0x0197, 6356 "Unable to allocate qpair hints.\n"); 6357 return -ENOMEM; 6358 } 6359 6360 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6361 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6362 6363 rc = btree_init64(&tgt->lun_qpair_map); 6364 if (rc) { 6365 kfree(tgt->qphints); 6366 kfree(tgt); 6367 ql_log(ql_log_info, base_vha, 0x0198, 6368 "Unable to initialize lun_qpair_map btree\n"); 6369 return -EIO; 6370 } 6371 h = &tgt->qphints[0]; 6372 h->qpair = ha->base_qpair; 6373 INIT_LIST_HEAD(&h->hint_elem); 6374 h->cpuid = ha->base_qpair->cpuid; 6375 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6376 6377 for (i = 0; i < ha->max_qpairs; i++) { 6378 unsigned long flags; 6379 6380 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6381 6382 h = &tgt->qphints[i + 1]; 6383 INIT_LIST_HEAD(&h->hint_elem); 6384 if (qpair) { 6385 h->qpair = qpair; 6386 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6387 list_add_tail(&h->hint_elem, &qpair->hints_list); 6388 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6389 h->cpuid = qpair->cpuid; 6390 } 6391 } 6392 6393 tgt->ha = ha; 6394 tgt->vha = base_vha; 6395 init_waitqueue_head(&tgt->waitQ); 6396 INIT_LIST_HEAD(&tgt->del_sess_list); 6397 spin_lock_init(&tgt->sess_work_lock); 6398 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6399 INIT_LIST_HEAD(&tgt->sess_works_list); 6400 atomic_set(&tgt->tgt_global_resets_count, 0); 6401 6402 base_vha->vha_tgt.qla_tgt = tgt; 6403 6404 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6405 "qla_target(%d): using 64 Bit PCI addressing", 6406 base_vha->vp_idx); 6407 /* 3 is reserved */ 6408 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6409 6410 mutex_lock(&qla_tgt_mutex); 6411 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6412 mutex_unlock(&qla_tgt_mutex); 6413 6414 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6415 ha->tgt.tgt_ops->add_target(base_vha); 6416 6417 return 0; 6418 } 6419 6420 /* Must be called under tgt_host_action_mutex */ 6421 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6422 { 6423 if (!vha->vha_tgt.qla_tgt) 6424 return 0; 6425 6426 if (vha->fc_vport) { 6427 qlt_release(vha->vha_tgt.qla_tgt); 6428 return 0; 6429 } 6430 6431 /* free left over qfull cmds */ 6432 qlt_init_term_exchange(vha); 6433 6434 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6435 vha->host_no, ha); 6436 qlt_release(vha->vha_tgt.qla_tgt); 6437 6438 return 0; 6439 } 6440 6441 void qlt_remove_target_resources(struct qla_hw_data *ha) 6442 { 6443 struct scsi_qla_host *node; 6444 u32 key = 0; 6445 6446 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6447 btree_remove32(&ha->tgt.host_map, key); 6448 6449 btree_destroy32(&ha->tgt.host_map); 6450 } 6451 6452 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6453 unsigned char *b) 6454 { 6455 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6456 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6457 put_unaligned_be64(wwpn, b); 6458 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6459 } 6460 6461 /** 6462 * qla_tgt_lport_register - register lport with external module 6463 * 6464 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6465 * @phys_wwpn: physical port WWPN 6466 * @npiv_wwpn: NPIV WWPN 6467 * @npiv_wwnn: NPIV WWNN 6468 * @callback: lport initialization callback for tcm_qla2xxx code 6469 */ 6470 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6471 u64 npiv_wwpn, u64 npiv_wwnn, 6472 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6473 { 6474 struct qla_tgt *tgt; 6475 struct scsi_qla_host *vha; 6476 struct qla_hw_data *ha; 6477 struct Scsi_Host *host; 6478 unsigned long flags; 6479 int rc; 6480 u8 b[WWN_SIZE]; 6481 6482 mutex_lock(&qla_tgt_mutex); 6483 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6484 vha = tgt->vha; 6485 ha = vha->hw; 6486 6487 host = vha->host; 6488 if (!host) 6489 continue; 6490 6491 if (!(host->hostt->supported_mode & MODE_TARGET)) 6492 continue; 6493 6494 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6495 continue; 6496 6497 spin_lock_irqsave(&ha->hardware_lock, flags); 6498 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6499 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6500 host->host_no); 6501 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6502 continue; 6503 } 6504 if (tgt->tgt_stop) { 6505 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6506 host->host_no); 6507 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6508 continue; 6509 } 6510 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6511 6512 if (!scsi_host_get(host)) { 6513 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6514 "Unable to scsi_host_get() for" 6515 " qla2xxx scsi_host\n"); 6516 continue; 6517 } 6518 qlt_lport_dump(vha, phys_wwpn, b); 6519 6520 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6521 scsi_host_put(host); 6522 continue; 6523 } 6524 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6525 if (rc != 0) 6526 scsi_host_put(host); 6527 6528 mutex_unlock(&qla_tgt_mutex); 6529 return rc; 6530 } 6531 mutex_unlock(&qla_tgt_mutex); 6532 6533 return -ENODEV; 6534 } 6535 EXPORT_SYMBOL(qlt_lport_register); 6536 6537 /** 6538 * qla_tgt_lport_deregister - Degister lport 6539 * 6540 * @vha: Registered scsi_qla_host pointer 6541 */ 6542 void qlt_lport_deregister(struct scsi_qla_host *vha) 6543 { 6544 struct qla_hw_data *ha = vha->hw; 6545 struct Scsi_Host *sh = vha->host; 6546 /* 6547 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6548 */ 6549 vha->vha_tgt.target_lport_ptr = NULL; 6550 ha->tgt.tgt_ops = NULL; 6551 /* 6552 * Release the Scsi_Host reference for the underlying qla2xxx host 6553 */ 6554 scsi_host_put(sh); 6555 } 6556 EXPORT_SYMBOL(qlt_lport_deregister); 6557 6558 /* Must be called under HW lock */ 6559 void qlt_set_mode(struct scsi_qla_host *vha) 6560 { 6561 switch (vha->qlini_mode) { 6562 case QLA2XXX_INI_MODE_DISABLED: 6563 case QLA2XXX_INI_MODE_EXCLUSIVE: 6564 vha->host->active_mode = MODE_TARGET; 6565 break; 6566 case QLA2XXX_INI_MODE_ENABLED: 6567 vha->host->active_mode = MODE_INITIATOR; 6568 break; 6569 case QLA2XXX_INI_MODE_DUAL: 6570 vha->host->active_mode = MODE_DUAL; 6571 break; 6572 default: 6573 break; 6574 } 6575 } 6576 6577 /* Must be called under HW lock */ 6578 static void qlt_clear_mode(struct scsi_qla_host *vha) 6579 { 6580 switch (vha->qlini_mode) { 6581 case QLA2XXX_INI_MODE_DISABLED: 6582 vha->host->active_mode = MODE_UNKNOWN; 6583 break; 6584 case QLA2XXX_INI_MODE_EXCLUSIVE: 6585 vha->host->active_mode = MODE_INITIATOR; 6586 break; 6587 case QLA2XXX_INI_MODE_ENABLED: 6588 case QLA2XXX_INI_MODE_DUAL: 6589 vha->host->active_mode = MODE_INITIATOR; 6590 break; 6591 default: 6592 break; 6593 } 6594 } 6595 6596 /* 6597 * qla_tgt_enable_vha - NO LOCK HELD 6598 * 6599 * host_reset, bring up w/ Target Mode Enabled 6600 */ 6601 void 6602 qlt_enable_vha(struct scsi_qla_host *vha) 6603 { 6604 struct qla_hw_data *ha = vha->hw; 6605 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6606 unsigned long flags; 6607 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6608 6609 if (!tgt) { 6610 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6611 "Unable to locate qla_tgt pointer from" 6612 " struct qla_hw_data\n"); 6613 dump_stack(); 6614 return; 6615 } 6616 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6617 return; 6618 6619 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6620 ha->tgt.num_act_qpairs = ha->max_qpairs; 6621 spin_lock_irqsave(&ha->hardware_lock, flags); 6622 tgt->tgt_stopped = 0; 6623 qlt_set_mode(vha); 6624 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6625 6626 mutex_lock(&ha->optrom_mutex); 6627 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6628 "%s.\n", __func__); 6629 if (vha->vp_idx) { 6630 qla24xx_disable_vp(vha); 6631 qla24xx_enable_vp(vha); 6632 } else { 6633 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6634 qla2xxx_wake_dpc(base_vha); 6635 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6636 QLA_SUCCESS); 6637 } 6638 mutex_unlock(&ha->optrom_mutex); 6639 } 6640 EXPORT_SYMBOL(qlt_enable_vha); 6641 6642 /* 6643 * qla_tgt_disable_vha - NO LOCK HELD 6644 * 6645 * Disable Target Mode and reset the adapter 6646 */ 6647 static void qlt_disable_vha(struct scsi_qla_host *vha) 6648 { 6649 struct qla_hw_data *ha = vha->hw; 6650 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6651 unsigned long flags; 6652 6653 if (!tgt) { 6654 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6655 "Unable to locate qla_tgt pointer from" 6656 " struct qla_hw_data\n"); 6657 dump_stack(); 6658 return; 6659 } 6660 6661 spin_lock_irqsave(&ha->hardware_lock, flags); 6662 qlt_clear_mode(vha); 6663 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6664 6665 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6666 qla2xxx_wake_dpc(vha); 6667 6668 /* 6669 * We are expecting the offline state. 6670 * QLA_FUNCTION_FAILED means that adapter is offline. 6671 */ 6672 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6673 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6674 "adapter is offline\n"); 6675 } 6676 6677 /* 6678 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6679 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6680 * members. 6681 */ 6682 void 6683 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6684 { 6685 vha->vha_tgt.qla_tgt = NULL; 6686 6687 mutex_init(&vha->vha_tgt.tgt_mutex); 6688 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6689 6690 qlt_clear_mode(vha); 6691 6692 /* 6693 * NOTE: Currently the value is kept the same for <24xx and 6694 * >=24xx ISPs. If it is necessary to change it, 6695 * the check should be added for specific ISPs, 6696 * assigning the value appropriately. 6697 */ 6698 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6699 6700 qlt_add_target(ha, vha); 6701 } 6702 6703 u8 6704 qlt_rff_id(struct scsi_qla_host *vha) 6705 { 6706 u8 fc4_feature = 0; 6707 /* 6708 * FC-4 Feature bit 0 indicates target functionality to the name server. 6709 */ 6710 if (qla_tgt_mode_enabled(vha)) { 6711 fc4_feature = BIT_0; 6712 } else if (qla_ini_mode_enabled(vha)) { 6713 fc4_feature = BIT_1; 6714 } else if (qla_dual_mode_enabled(vha)) 6715 fc4_feature = BIT_0 | BIT_1; 6716 6717 return fc4_feature; 6718 } 6719 6720 /* 6721 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6722 * @ha: HA context 6723 * 6724 * Beginning of ATIO ring has initialization control block already built 6725 * by nvram config routine. 6726 * 6727 * Returns 0 on success. 6728 */ 6729 void 6730 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6731 { 6732 struct qla_hw_data *ha = vha->hw; 6733 uint16_t cnt; 6734 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6735 6736 if (qla_ini_mode_enabled(vha)) 6737 return; 6738 6739 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6740 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6741 pkt++; 6742 } 6743 6744 } 6745 6746 /* 6747 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6748 * @ha: SCSI driver HA context 6749 */ 6750 void 6751 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6752 { 6753 struct qla_hw_data *ha = vha->hw; 6754 struct atio_from_isp *pkt; 6755 int cnt, i; 6756 6757 if (!ha->flags.fw_started) 6758 return; 6759 6760 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6761 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6762 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6763 cnt = pkt->u.raw.entry_count; 6764 6765 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6766 /* 6767 * This packet is corrupted. The header + payload 6768 * can not be trusted. There is no point in passing 6769 * it further up. 6770 */ 6771 ql_log(ql_log_warn, vha, 0xd03c, 6772 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6773 &pkt->u.isp24.fcp_hdr.s_id, 6774 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6775 pkt->u.isp24.exchange_addr, pkt); 6776 6777 adjust_corrupted_atio(pkt); 6778 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6779 ha_locked, 0); 6780 } else { 6781 qlt_24xx_atio_pkt_all_vps(vha, 6782 (struct atio_from_isp *)pkt, ha_locked); 6783 } 6784 6785 for (i = 0; i < cnt; i++) { 6786 ha->tgt.atio_ring_index++; 6787 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6788 ha->tgt.atio_ring_index = 0; 6789 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6790 } else 6791 ha->tgt.atio_ring_ptr++; 6792 6793 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6794 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6795 } 6796 wmb(); 6797 } 6798 6799 /* Adjust ring index */ 6800 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6801 } 6802 6803 void 6804 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6805 { 6806 struct qla_hw_data *ha = vha->hw; 6807 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6808 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6809 6810 if (!QLA_TGT_MODE_ENABLED()) 6811 return; 6812 6813 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6814 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6815 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6816 6817 if (ha->flags.msix_enabled) { 6818 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6819 if (IS_QLA2071(ha)) { 6820 /* 4 ports Baker: Enable Interrupt Handshake */ 6821 icb->msix_atio = 0; 6822 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6823 } else { 6824 icb->msix_atio = cpu_to_le16(msix->entry); 6825 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6826 } 6827 ql_dbg(ql_dbg_init, vha, 0xf072, 6828 "Registering ICB vector 0x%x for atio que.\n", 6829 msix->entry); 6830 } 6831 } else { 6832 /* INTx|MSI */ 6833 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6834 icb->msix_atio = 0; 6835 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6836 ql_dbg(ql_dbg_init, vha, 0xf072, 6837 "%s: Use INTx for ATIOQ.\n", __func__); 6838 } 6839 } 6840 } 6841 6842 void 6843 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6844 { 6845 struct qla_hw_data *ha = vha->hw; 6846 u32 tmp; 6847 6848 if (!QLA_TGT_MODE_ENABLED()) 6849 return; 6850 6851 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6852 if (!ha->tgt.saved_set) { 6853 /* We save only once */ 6854 ha->tgt.saved_exchange_count = nv->exchange_count; 6855 ha->tgt.saved_firmware_options_1 = 6856 nv->firmware_options_1; 6857 ha->tgt.saved_firmware_options_2 = 6858 nv->firmware_options_2; 6859 ha->tgt.saved_firmware_options_3 = 6860 nv->firmware_options_3; 6861 ha->tgt.saved_set = 1; 6862 } 6863 6864 if (qla_tgt_mode_enabled(vha)) 6865 nv->exchange_count = cpu_to_le16(0xFFFF); 6866 else /* dual */ 6867 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6868 6869 /* Enable target mode */ 6870 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6871 6872 /* Disable ini mode, if requested */ 6873 if (qla_tgt_mode_enabled(vha)) 6874 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6875 6876 /* Disable Full Login after LIP */ 6877 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6878 /* Enable initial LIP */ 6879 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6880 if (ql2xtgt_tape_enable) 6881 /* Enable FC Tape support */ 6882 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6883 else 6884 /* Disable FC Tape support */ 6885 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6886 6887 /* Disable Full Login after LIP */ 6888 nv->host_p &= cpu_to_le32(~BIT_10); 6889 6890 /* 6891 * clear BIT 15 explicitly as we have seen at least 6892 * a couple of instances where this was set and this 6893 * was causing the firmware to not be initialized. 6894 */ 6895 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6896 /* Enable target PRLI control */ 6897 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6898 6899 if (IS_QLA25XX(ha)) { 6900 /* Change Loop-prefer to Pt-Pt */ 6901 tmp = ~(BIT_4|BIT_5|BIT_6); 6902 nv->firmware_options_2 &= cpu_to_le32(tmp); 6903 tmp = P2P << 4; 6904 nv->firmware_options_2 |= cpu_to_le32(tmp); 6905 } 6906 } else { 6907 if (ha->tgt.saved_set) { 6908 nv->exchange_count = ha->tgt.saved_exchange_count; 6909 nv->firmware_options_1 = 6910 ha->tgt.saved_firmware_options_1; 6911 nv->firmware_options_2 = 6912 ha->tgt.saved_firmware_options_2; 6913 nv->firmware_options_3 = 6914 ha->tgt.saved_firmware_options_3; 6915 } 6916 return; 6917 } 6918 6919 if (ha->base_qpair->enable_class_2) { 6920 if (vha->flags.init_done) 6921 fc_host_supported_classes(vha->host) = 6922 FC_COS_CLASS2 | FC_COS_CLASS3; 6923 6924 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6925 } else { 6926 if (vha->flags.init_done) 6927 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6928 6929 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6930 } 6931 } 6932 6933 void 6934 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6935 struct init_cb_24xx *icb) 6936 { 6937 struct qla_hw_data *ha = vha->hw; 6938 6939 if (!QLA_TGT_MODE_ENABLED()) 6940 return; 6941 6942 if (ha->tgt.node_name_set) { 6943 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6944 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6945 } 6946 } 6947 6948 void 6949 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6950 { 6951 struct qla_hw_data *ha = vha->hw; 6952 u32 tmp; 6953 6954 if (!QLA_TGT_MODE_ENABLED()) 6955 return; 6956 6957 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6958 if (!ha->tgt.saved_set) { 6959 /* We save only once */ 6960 ha->tgt.saved_exchange_count = nv->exchange_count; 6961 ha->tgt.saved_firmware_options_1 = 6962 nv->firmware_options_1; 6963 ha->tgt.saved_firmware_options_2 = 6964 nv->firmware_options_2; 6965 ha->tgt.saved_firmware_options_3 = 6966 nv->firmware_options_3; 6967 ha->tgt.saved_set = 1; 6968 } 6969 6970 if (qla_tgt_mode_enabled(vha)) 6971 nv->exchange_count = cpu_to_le16(0xFFFF); 6972 else /* dual */ 6973 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6974 6975 /* Enable target mode */ 6976 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6977 6978 /* Disable ini mode, if requested */ 6979 if (qla_tgt_mode_enabled(vha)) 6980 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6981 /* Disable Full Login after LIP */ 6982 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6983 /* Enable initial LIP */ 6984 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6985 /* 6986 * clear BIT 15 explicitly as we have seen at 6987 * least a couple of instances where this was set 6988 * and this was causing the firmware to not be 6989 * initialized. 6990 */ 6991 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6992 if (ql2xtgt_tape_enable) 6993 /* Enable FC tape support */ 6994 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6995 else 6996 /* Disable FC tape support */ 6997 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6998 6999 /* Disable Full Login after LIP */ 7000 nv->host_p &= cpu_to_le32(~BIT_10); 7001 /* Enable target PRLI control */ 7002 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7003 7004 /* Change Loop-prefer to Pt-Pt */ 7005 tmp = ~(BIT_4|BIT_5|BIT_6); 7006 nv->firmware_options_2 &= cpu_to_le32(tmp); 7007 tmp = P2P << 4; 7008 nv->firmware_options_2 |= cpu_to_le32(tmp); 7009 } else { 7010 if (ha->tgt.saved_set) { 7011 nv->exchange_count = ha->tgt.saved_exchange_count; 7012 nv->firmware_options_1 = 7013 ha->tgt.saved_firmware_options_1; 7014 nv->firmware_options_2 = 7015 ha->tgt.saved_firmware_options_2; 7016 nv->firmware_options_3 = 7017 ha->tgt.saved_firmware_options_3; 7018 } 7019 return; 7020 } 7021 7022 if (ha->base_qpair->enable_class_2) { 7023 if (vha->flags.init_done) 7024 fc_host_supported_classes(vha->host) = 7025 FC_COS_CLASS2 | FC_COS_CLASS3; 7026 7027 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7028 } else { 7029 if (vha->flags.init_done) 7030 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7031 7032 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7033 } 7034 } 7035 7036 void 7037 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7038 struct init_cb_81xx *icb) 7039 { 7040 struct qla_hw_data *ha = vha->hw; 7041 7042 if (!QLA_TGT_MODE_ENABLED()) 7043 return; 7044 7045 if (ha->tgt.node_name_set) { 7046 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7047 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7048 } 7049 } 7050 7051 void 7052 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7053 { 7054 if (!QLA_TGT_MODE_ENABLED()) 7055 return; 7056 7057 ha->msix_count += 1; /* For ATIO Q */ 7058 } 7059 7060 7061 void 7062 qlt_modify_vp_config(struct scsi_qla_host *vha, 7063 struct vp_config_entry_24xx *vpmod) 7064 { 7065 /* enable target mode. Bit5 = 1 => disable */ 7066 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7067 vpmod->options_idx1 &= ~BIT_5; 7068 7069 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7070 if (qla_tgt_mode_enabled(vha)) 7071 vpmod->options_idx1 &= ~BIT_4; 7072 } 7073 7074 void 7075 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7076 { 7077 int rc; 7078 7079 if (!QLA_TGT_MODE_ENABLED()) 7080 return; 7081 7082 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7083 IS_QLA28XX(ha)) { 7084 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7085 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7086 } else { 7087 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7088 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7089 } 7090 7091 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7092 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7093 7094 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7095 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7096 qlt_unknown_atio_work_fn); 7097 7098 qlt_clear_mode(base_vha); 7099 7100 rc = btree_init32(&ha->tgt.host_map); 7101 if (rc) 7102 ql_log(ql_log_info, base_vha, 0xd03d, 7103 "Unable to initialize ha->host_map btree\n"); 7104 7105 qlt_update_vp_map(base_vha, SET_VP_IDX); 7106 } 7107 7108 irqreturn_t 7109 qla83xx_msix_atio_q(int irq, void *dev_id) 7110 { 7111 struct rsp_que *rsp; 7112 scsi_qla_host_t *vha; 7113 struct qla_hw_data *ha; 7114 unsigned long flags; 7115 7116 rsp = (struct rsp_que *) dev_id; 7117 ha = rsp->hw; 7118 vha = pci_get_drvdata(ha->pdev); 7119 7120 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7121 7122 qlt_24xx_process_atio_queue(vha, 0); 7123 7124 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7125 7126 return IRQ_HANDLED; 7127 } 7128 7129 static void 7130 qlt_handle_abts_recv_work(struct work_struct *work) 7131 { 7132 struct qla_tgt_sess_op *op = container_of(work, 7133 struct qla_tgt_sess_op, work); 7134 scsi_qla_host_t *vha = op->vha; 7135 struct qla_hw_data *ha = vha->hw; 7136 unsigned long flags; 7137 7138 if (qla2x00_reset_active(vha) || 7139 (op->chip_reset != ha->base_qpair->chip_reset)) 7140 return; 7141 7142 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7143 qlt_24xx_process_atio_queue(vha, 0); 7144 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7145 7146 spin_lock_irqsave(&ha->hardware_lock, flags); 7147 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7148 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7149 7150 kfree(op); 7151 } 7152 7153 void 7154 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7155 response_t *pkt) 7156 { 7157 struct qla_tgt_sess_op *op; 7158 7159 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7160 7161 if (!op) { 7162 /* do not reach for ATIO queue here. This is best effort err 7163 * recovery at this point. 7164 */ 7165 qlt_response_pkt_all_vps(vha, rsp, pkt); 7166 return; 7167 } 7168 7169 memcpy(&op->atio, pkt, sizeof(*pkt)); 7170 op->vha = vha; 7171 op->chip_reset = vha->hw->base_qpair->chip_reset; 7172 op->rsp = rsp; 7173 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7174 queue_work(qla_tgt_wq, &op->work); 7175 return; 7176 } 7177 7178 int 7179 qlt_mem_alloc(struct qla_hw_data *ha) 7180 { 7181 if (!QLA_TGT_MODE_ENABLED()) 7182 return 0; 7183 7184 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7185 sizeof(struct qla_tgt_vp_map), 7186 GFP_KERNEL); 7187 if (!ha->tgt.tgt_vp_map) 7188 return -ENOMEM; 7189 7190 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7191 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7192 &ha->tgt.atio_dma, GFP_KERNEL); 7193 if (!ha->tgt.atio_ring) { 7194 kfree(ha->tgt.tgt_vp_map); 7195 return -ENOMEM; 7196 } 7197 return 0; 7198 } 7199 7200 void 7201 qlt_mem_free(struct qla_hw_data *ha) 7202 { 7203 if (!QLA_TGT_MODE_ENABLED()) 7204 return; 7205 7206 if (ha->tgt.atio_ring) { 7207 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7208 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7209 ha->tgt.atio_dma); 7210 } 7211 ha->tgt.atio_ring = NULL; 7212 ha->tgt.atio_dma = 0; 7213 kfree(ha->tgt.tgt_vp_map); 7214 ha->tgt.tgt_vp_map = NULL; 7215 } 7216 7217 /* vport_slock to be held by the caller */ 7218 void 7219 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7220 { 7221 void *slot; 7222 u32 key; 7223 int rc; 7224 7225 if (!QLA_TGT_MODE_ENABLED()) 7226 return; 7227 7228 key = vha->d_id.b24; 7229 7230 switch (cmd) { 7231 case SET_VP_IDX: 7232 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7233 break; 7234 case SET_AL_PA: 7235 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7236 if (!slot) { 7237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7238 "Save vha in host_map %p %06x\n", vha, key); 7239 rc = btree_insert32(&vha->hw->tgt.host_map, 7240 key, vha, GFP_ATOMIC); 7241 if (rc) 7242 ql_log(ql_log_info, vha, 0xd03e, 7243 "Unable to insert s_id into host_map: %06x\n", 7244 key); 7245 return; 7246 } 7247 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7248 "replace existing vha in host_map %p %06x\n", vha, key); 7249 btree_update32(&vha->hw->tgt.host_map, key, vha); 7250 break; 7251 case RESET_VP_IDX: 7252 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7253 break; 7254 case RESET_AL_PA: 7255 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7256 "clear vha in host_map %p %06x\n", vha, key); 7257 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7258 if (slot) 7259 btree_remove32(&vha->hw->tgt.host_map, key); 7260 vha->d_id.b24 = 0; 7261 break; 7262 } 7263 } 7264 7265 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7266 { 7267 7268 if (!vha->d_id.b24) { 7269 vha->d_id = id; 7270 qlt_update_vp_map(vha, SET_AL_PA); 7271 } else if (vha->d_id.b24 != id.b24) { 7272 qlt_update_vp_map(vha, RESET_AL_PA); 7273 vha->d_id = id; 7274 qlt_update_vp_map(vha, SET_AL_PA); 7275 } 7276 } 7277 7278 static int __init qlt_parse_ini_mode(void) 7279 { 7280 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7281 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7282 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7283 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7284 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7285 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7286 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7287 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7288 else 7289 return false; 7290 7291 return true; 7292 } 7293 7294 int __init qlt_init(void) 7295 { 7296 int ret; 7297 7298 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7299 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7300 7301 if (!qlt_parse_ini_mode()) { 7302 ql_log(ql_log_fatal, NULL, 0xe06b, 7303 "qlt_parse_ini_mode() failed\n"); 7304 return -EINVAL; 7305 } 7306 7307 if (!QLA_TGT_MODE_ENABLED()) 7308 return 0; 7309 7310 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7311 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7312 qla_tgt_mgmt_cmd), 0, NULL); 7313 if (!qla_tgt_mgmt_cmd_cachep) { 7314 ql_log(ql_log_fatal, NULL, 0xd04b, 7315 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7316 return -ENOMEM; 7317 } 7318 7319 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7320 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7321 0, NULL); 7322 7323 if (!qla_tgt_plogi_cachep) { 7324 ql_log(ql_log_fatal, NULL, 0xe06d, 7325 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7326 ret = -ENOMEM; 7327 goto out_mgmt_cmd_cachep; 7328 } 7329 7330 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7331 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7332 if (!qla_tgt_mgmt_cmd_mempool) { 7333 ql_log(ql_log_fatal, NULL, 0xe06e, 7334 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7335 ret = -ENOMEM; 7336 goto out_plogi_cachep; 7337 } 7338 7339 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7340 if (!qla_tgt_wq) { 7341 ql_log(ql_log_fatal, NULL, 0xe06f, 7342 "alloc_workqueue for qla_tgt_wq failed\n"); 7343 ret = -ENOMEM; 7344 goto out_cmd_mempool; 7345 } 7346 /* 7347 * Return 1 to signal that initiator-mode is being disabled 7348 */ 7349 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7350 7351 out_cmd_mempool: 7352 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7353 out_plogi_cachep: 7354 kmem_cache_destroy(qla_tgt_plogi_cachep); 7355 out_mgmt_cmd_cachep: 7356 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7357 return ret; 7358 } 7359 7360 void qlt_exit(void) 7361 { 7362 if (!QLA_TGT_MODE_ENABLED()) 7363 return; 7364 7365 destroy_workqueue(qla_tgt_wq); 7366 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7367 kmem_cache_destroy(qla_tgt_plogi_cachep); 7368 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7369 } 7370