1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/blkdev.h> 21 #include <linux/interrupt.h> 22 #include <linux/pci.h> 23 #include <linux/delay.h> 24 #include <linux/list.h> 25 #include <linux/workqueue.h> 26 #include <asm/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 54 "For Dual Mode (qlini_mode=dual), this parameter determines " 55 "the percentage of exchanges/cmds FW will allocate resources " 56 "for Target mode."); 57 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum fcp_resp_rsp_codes { 74 FCP_TMF_CMPL = 0, 75 FCP_DATA_LEN_INVALID = 1, 76 FCP_CMND_FIELDS_INVALID = 2, 77 FCP_DATA_PARAM_MISMATCH = 3, 78 FCP_TMF_REJECTED = 4, 79 FCP_TMF_FAILED = 5, 80 FCP_TMF_INVALID_LUN = 9, 81 }; 82 83 /* 84 * fc_pri_ta from scsi/fc/fc_fcp.h 85 */ 86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 90 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 93 94 /* 95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 96 * must be called under HW lock and could unlock/lock it inside. 97 * It isn't an issue, since in the current implementation on the time when 98 * those functions are called: 99 * 100 * - Either context is IRQ and only IRQ handler can modify HW data, 101 * including rings related fields, 102 * 103 * - Or access to target mode variables from struct qla_tgt doesn't 104 * cross those functions boundaries, except tgt_stop, which 105 * additionally protected by irq_cmd_count. 106 */ 107 /* Predefs for callbacks handed to qla2xxx LLD */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static void qlt_send_notify_ack(struct qla_qpair *qpair, 121 struct imm_ntfy_from_isp *ntfy, 122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static const char *prot_op_str(u32 prot_op) 147 { 148 switch (prot_op) { 149 case TARGET_PROT_NORMAL: return "NORMAL"; 150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 154 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 156 default: return "UNKNOWN"; 157 } 158 } 159 160 /* This API intentionally takes dest as a parameter, rather than returning 161 * int value to avoid caller forgetting to issue wmb() after the store */ 162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 163 { 164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 165 *dest = atomic_inc_return(&base_vha->generation_tick); 166 /* memory barrier */ 167 wmb(); 168 } 169 170 /* Might release hw lock, then reaquire!! */ 171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 172 { 173 /* Send marker if required */ 174 if (unlikely(vha->marker_needed != 0)) { 175 int rc = qla2x00_issue_marker(vha, vha_locked); 176 177 if (rc != QLA_SUCCESS) { 178 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 179 "qla_target(%d): issue_marker() failed\n", 180 vha->vp_idx); 181 } 182 return rc; 183 } 184 return QLA_SUCCESS; 185 } 186 187 static inline 188 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 189 be_id_t d_id) 190 { 191 struct scsi_qla_host *host; 192 uint32_t key; 193 194 if (vha->d_id.b.area == d_id.area && 195 vha->d_id.b.domain == d_id.domain && 196 vha->d_id.b.al_pa == d_id.al_pa) 197 return vha; 198 199 key = be_to_port_id(d_id).b24; 200 201 host = btree_lookup32(&vha->hw->tgt.host_map, key); 202 if (!host) 203 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 204 "Unable to find host %06x\n", key); 205 206 return host; 207 } 208 209 static inline 210 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 211 uint16_t vp_idx) 212 { 213 struct qla_hw_data *ha = vha->hw; 214 215 if (vha->vp_idx == vp_idx) 216 return vha; 217 218 BUG_ON(ha->tgt.tgt_vp_map == NULL); 219 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 220 return ha->tgt.tgt_vp_map[vp_idx].vha; 221 222 return NULL; 223 } 224 225 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 226 { 227 unsigned long flags; 228 229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 230 231 vha->hw->tgt.num_pend_cmds++; 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 233 vha->qla_stats.stat_max_pend_cmds = 234 vha->hw->tgt.num_pend_cmds; 235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 236 } 237 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 238 { 239 unsigned long flags; 240 241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 242 vha->hw->tgt.num_pend_cmds--; 243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 244 } 245 246 247 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 248 struct atio_from_isp *atio, uint8_t ha_locked) 249 { 250 struct qla_tgt_sess_op *u; 251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 252 unsigned long flags; 253 254 if (tgt->tgt_stop) { 255 ql_dbg(ql_dbg_async, vha, 0x502c, 256 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 257 vha->vp_idx); 258 goto out_term; 259 } 260 261 u = kzalloc(sizeof(*u), GFP_ATOMIC); 262 if (u == NULL) 263 goto out_term; 264 265 u->vha = vha; 266 memcpy(&u->atio, atio, sizeof(*atio)); 267 INIT_LIST_HEAD(&u->cmd_list); 268 269 spin_lock_irqsave(&vha->cmd_list_lock, flags); 270 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 271 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 272 273 schedule_delayed_work(&vha->unknown_atio_work, 1); 274 275 out: 276 return; 277 278 out_term: 279 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 280 goto out; 281 } 282 283 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 284 uint8_t ha_locked) 285 { 286 struct qla_tgt_sess_op *u, *t; 287 scsi_qla_host_t *host; 288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 289 unsigned long flags; 290 uint8_t queued = 0; 291 292 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 293 if (u->aborted) { 294 ql_dbg(ql_dbg_async, vha, 0x502e, 295 "Freeing unknown %s %p, because of Abort\n", 296 "ATIO_TYPE7", u); 297 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 298 &u->atio, ha_locked, 0); 299 goto abort; 300 } 301 302 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 303 if (host != NULL) { 304 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 305 "Requeuing unknown ATIO_TYPE7 %p\n", u); 306 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 307 } else if (tgt->tgt_stop) { 308 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 309 "Freeing unknown %s %p, because tgt is being stopped\n", 310 "ATIO_TYPE7", u); 311 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 312 &u->atio, ha_locked, 0); 313 } else { 314 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 315 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 316 if (!queued) { 317 queued = 1; 318 schedule_delayed_work(&vha->unknown_atio_work, 319 1); 320 } 321 continue; 322 } 323 324 abort: 325 spin_lock_irqsave(&vha->cmd_list_lock, flags); 326 list_del(&u->cmd_list); 327 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 328 kfree(u); 329 } 330 } 331 332 void qlt_unknown_atio_work_fn(struct work_struct *work) 333 { 334 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 335 struct scsi_qla_host, unknown_atio_work); 336 337 qlt_try_to_dequeue_unknown_atios(vha, 0); 338 } 339 340 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 341 struct atio_from_isp *atio, uint8_t ha_locked) 342 { 343 ql_dbg(ql_dbg_tgt, vha, 0xe072, 344 "%s: qla_target(%d): type %x ox_id %04x\n", 345 __func__, vha->vp_idx, atio->u.raw.entry_type, 346 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 347 348 switch (atio->u.raw.entry_type) { 349 case ATIO_TYPE7: 350 { 351 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 352 atio->u.isp24.fcp_hdr.d_id); 353 if (unlikely(NULL == host)) { 354 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 355 "qla_target(%d): Received ATIO_TYPE7 " 356 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 357 atio->u.isp24.fcp_hdr.d_id.domain, 358 atio->u.isp24.fcp_hdr.d_id.area, 359 atio->u.isp24.fcp_hdr.d_id.al_pa); 360 361 362 qlt_queue_unknown_atio(vha, atio, ha_locked); 363 break; 364 } 365 if (unlikely(!list_empty(&vha->unknown_atio_list))) 366 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 367 368 qlt_24xx_atio_pkt(host, atio, ha_locked); 369 break; 370 } 371 372 case IMMED_NOTIFY_TYPE: 373 { 374 struct scsi_qla_host *host = vha; 375 struct imm_ntfy_from_isp *entry = 376 (struct imm_ntfy_from_isp *)atio; 377 378 qlt_issue_marker(vha, ha_locked); 379 380 if ((entry->u.isp24.vp_index != 0xFF) && 381 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 382 host = qlt_find_host_by_vp_idx(vha, 383 entry->u.isp24.vp_index); 384 if (unlikely(!host)) { 385 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 386 "qla_target(%d): Received " 387 "ATIO (IMMED_NOTIFY_TYPE) " 388 "with unknown vp_index %d\n", 389 vha->vp_idx, entry->u.isp24.vp_index); 390 break; 391 } 392 } 393 qlt_24xx_atio_pkt(host, atio, ha_locked); 394 break; 395 } 396 397 case VP_RPT_ID_IOCB_TYPE: 398 qla24xx_report_id_acquisition(vha, 399 (struct vp_rpt_id_entry_24xx *)atio); 400 break; 401 402 case ABTS_RECV_24XX: 403 { 404 struct abts_recv_from_24xx *entry = 405 (struct abts_recv_from_24xx *)atio; 406 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 407 entry->vp_index); 408 unsigned long flags; 409 410 if (unlikely(!host)) { 411 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 412 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 413 "received, with unknown vp_index %d\n", 414 vha->vp_idx, entry->vp_index); 415 break; 416 } 417 if (!ha_locked) 418 spin_lock_irqsave(&host->hw->hardware_lock, flags); 419 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 420 if (!ha_locked) 421 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 422 break; 423 } 424 425 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 426 427 default: 428 ql_dbg(ql_dbg_tgt, vha, 0xe040, 429 "qla_target(%d): Received unknown ATIO atio " 430 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 431 break; 432 } 433 434 return false; 435 } 436 437 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 438 struct rsp_que *rsp, response_t *pkt) 439 { 440 switch (pkt->entry_type) { 441 case CTIO_CRC2: 442 ql_dbg(ql_dbg_tgt, vha, 0xe073, 443 "qla_target(%d):%s: CRC2 Response pkt\n", 444 vha->vp_idx, __func__); 445 fallthrough; 446 case CTIO_TYPE7: 447 { 448 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 449 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 450 entry->vp_index); 451 if (unlikely(!host)) { 452 ql_dbg(ql_dbg_tgt, vha, 0xe041, 453 "qla_target(%d): Response pkt (CTIO_TYPE7) " 454 "received, with unknown vp_index %d\n", 455 vha->vp_idx, entry->vp_index); 456 break; 457 } 458 qlt_response_pkt(host, rsp, pkt); 459 break; 460 } 461 462 case IMMED_NOTIFY_TYPE: 463 { 464 struct scsi_qla_host *host; 465 struct imm_ntfy_from_isp *entry = 466 (struct imm_ntfy_from_isp *)pkt; 467 468 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 469 if (unlikely(!host)) { 470 ql_dbg(ql_dbg_tgt, vha, 0xe042, 471 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 472 "received, with unknown vp_index %d\n", 473 vha->vp_idx, entry->u.isp24.vp_index); 474 break; 475 } 476 qlt_response_pkt(host, rsp, pkt); 477 break; 478 } 479 480 case NOTIFY_ACK_TYPE: 481 { 482 struct scsi_qla_host *host = vha; 483 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 484 485 if (0xFF != entry->u.isp24.vp_index) { 486 host = qlt_find_host_by_vp_idx(vha, 487 entry->u.isp24.vp_index); 488 if (unlikely(!host)) { 489 ql_dbg(ql_dbg_tgt, vha, 0xe043, 490 "qla_target(%d): Response " 491 "pkt (NOTIFY_ACK_TYPE) " 492 "received, with unknown " 493 "vp_index %d\n", vha->vp_idx, 494 entry->u.isp24.vp_index); 495 break; 496 } 497 } 498 qlt_response_pkt(host, rsp, pkt); 499 break; 500 } 501 502 case ABTS_RECV_24XX: 503 { 504 struct abts_recv_from_24xx *entry = 505 (struct abts_recv_from_24xx *)pkt; 506 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 507 entry->vp_index); 508 if (unlikely(!host)) { 509 ql_dbg(ql_dbg_tgt, vha, 0xe044, 510 "qla_target(%d): Response pkt " 511 "(ABTS_RECV_24XX) received, with unknown " 512 "vp_index %d\n", vha->vp_idx, entry->vp_index); 513 break; 514 } 515 qlt_response_pkt(host, rsp, pkt); 516 break; 517 } 518 519 case ABTS_RESP_24XX: 520 { 521 struct abts_resp_to_24xx *entry = 522 (struct abts_resp_to_24xx *)pkt; 523 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 524 entry->vp_index); 525 if (unlikely(!host)) { 526 ql_dbg(ql_dbg_tgt, vha, 0xe045, 527 "qla_target(%d): Response pkt " 528 "(ABTS_RECV_24XX) received, with unknown " 529 "vp_index %d\n", vha->vp_idx, entry->vp_index); 530 break; 531 } 532 qlt_response_pkt(host, rsp, pkt); 533 break; 534 } 535 default: 536 qlt_response_pkt(vha, rsp, pkt); 537 break; 538 } 539 540 } 541 542 /* 543 * All qlt_plogi_ack_t operations are protected by hardware_lock 544 */ 545 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 546 struct imm_ntfy_from_isp *ntfy, int type) 547 { 548 struct qla_work_evt *e; 549 550 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 551 if (!e) 552 return QLA_FUNCTION_FAILED; 553 554 e->u.nack.fcport = fcport; 555 e->u.nack.type = type; 556 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 557 return qla2x00_post_work(vha, e); 558 } 559 560 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 561 { 562 struct scsi_qla_host *vha = sp->vha; 563 unsigned long flags; 564 565 ql_dbg(ql_dbg_disc, vha, 0x20f2, 566 "Async done-%s res %x %8phC type %d\n", 567 sp->name, res, sp->fcport->port_name, sp->type); 568 569 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 570 sp->fcport->flags &= ~FCF_ASYNC_SENT; 571 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 572 573 switch (sp->type) { 574 case SRB_NACK_PLOGI: 575 sp->fcport->login_gen++; 576 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 577 sp->fcport->logout_on_delete = 1; 578 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 579 sp->fcport->send_els_logo = 0; 580 break; 581 582 case SRB_NACK_PRLI: 583 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 584 sp->fcport->deleted = 0; 585 sp->fcport->send_els_logo = 0; 586 587 if (!sp->fcport->login_succ && 588 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 589 sp->fcport->login_succ = 1; 590 591 vha->fcport_count++; 592 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 593 qla24xx_sched_upd_fcport(sp->fcport); 594 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 595 } else { 596 sp->fcport->login_retry = 0; 597 qla2x00_set_fcport_disc_state(sp->fcport, 598 DSC_LOGIN_COMPLETE); 599 sp->fcport->deleted = 0; 600 sp->fcport->logout_on_delete = 1; 601 } 602 break; 603 604 case SRB_NACK_LOGO: 605 sp->fcport->login_gen++; 606 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 607 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 608 break; 609 } 610 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 611 612 sp->free(sp); 613 } 614 615 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 616 struct imm_ntfy_from_isp *ntfy, int type) 617 { 618 int rval = QLA_FUNCTION_FAILED; 619 srb_t *sp; 620 char *c = NULL; 621 622 fcport->flags |= FCF_ASYNC_SENT; 623 switch (type) { 624 case SRB_NACK_PLOGI: 625 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 626 c = "PLOGI"; 627 break; 628 case SRB_NACK_PRLI: 629 fcport->fw_login_state = DSC_LS_PRLI_PEND; 630 fcport->deleted = 0; 631 c = "PRLI"; 632 break; 633 case SRB_NACK_LOGO: 634 fcport->fw_login_state = DSC_LS_LOGO_PEND; 635 c = "LOGO"; 636 break; 637 } 638 639 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 640 if (!sp) 641 goto done; 642 643 sp->type = type; 644 sp->name = "nack"; 645 646 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 647 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 648 649 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 650 sp->done = qla2x00_async_nack_sp_done; 651 652 ql_dbg(ql_dbg_disc, vha, 0x20f4, 653 "Async-%s %8phC hndl %x %s\n", 654 sp->name, fcport->port_name, sp->handle, c); 655 656 rval = qla2x00_start_sp(sp); 657 if (rval != QLA_SUCCESS) 658 goto done_free_sp; 659 660 return rval; 661 662 done_free_sp: 663 sp->free(sp); 664 done: 665 fcport->flags &= ~FCF_ASYNC_SENT; 666 return rval; 667 } 668 669 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 670 { 671 fc_port_t *t; 672 673 switch (e->u.nack.type) { 674 case SRB_NACK_PRLI: 675 t = e->u.nack.fcport; 676 flush_work(&t->del_work); 677 flush_work(&t->free_work); 678 mutex_lock(&vha->vha_tgt.tgt_mutex); 679 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 680 mutex_unlock(&vha->vha_tgt.tgt_mutex); 681 if (t) { 682 ql_log(ql_log_info, vha, 0xd034, 683 "%s create sess success %p", __func__, t); 684 /* create sess has an extra kref */ 685 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 686 } 687 break; 688 } 689 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 690 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 691 } 692 693 void qla24xx_delete_sess_fn(struct work_struct *work) 694 { 695 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 696 struct qla_hw_data *ha = fcport->vha->hw; 697 698 if (fcport->se_sess) { 699 ha->tgt.tgt_ops->shutdown_sess(fcport); 700 ha->tgt.tgt_ops->put_sess(fcport); 701 } else { 702 qlt_unreg_sess(fcport); 703 } 704 } 705 706 /* 707 * Called from qla2x00_reg_remote_port() 708 */ 709 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 710 { 711 struct qla_hw_data *ha = vha->hw; 712 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 713 struct fc_port *sess = fcport; 714 unsigned long flags; 715 716 if (!vha->hw->tgt.tgt_ops) 717 return; 718 719 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 720 if (tgt->tgt_stop) { 721 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 722 return; 723 } 724 725 if (fcport->disc_state == DSC_DELETE_PEND) { 726 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 727 return; 728 } 729 730 if (!sess->se_sess) { 731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 732 733 mutex_lock(&vha->vha_tgt.tgt_mutex); 734 sess = qlt_create_sess(vha, fcport, false); 735 mutex_unlock(&vha->vha_tgt.tgt_mutex); 736 737 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 738 } else { 739 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 741 return; 742 } 743 744 if (!kref_get_unless_zero(&sess->sess_kref)) { 745 ql_dbg(ql_dbg_disc, vha, 0x2107, 746 "%s: kref_get fail sess %8phC \n", 747 __func__, sess->port_name); 748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 749 return; 750 } 751 752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 753 "qla_target(%u): %ssession for port %8phC " 754 "(loop ID %d) reappeared\n", vha->vp_idx, 755 sess->local ? "local " : "", sess->port_name, sess->loop_id); 756 757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 758 "Reappeared sess %p\n", sess); 759 760 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 761 fcport->loop_id, 762 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 763 } 764 765 if (sess && sess->local) { 766 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 767 "qla_target(%u): local session for " 768 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 769 fcport->port_name, sess->loop_id); 770 sess->local = 0; 771 } 772 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 773 774 ha->tgt.tgt_ops->put_sess(sess); 775 } 776 777 /* 778 * This is a zero-base ref-counting solution, since hardware_lock 779 * guarantees that ref_count is not modified concurrently. 780 * Upon successful return content of iocb is undefined 781 */ 782 static struct qlt_plogi_ack_t * 783 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 784 struct imm_ntfy_from_isp *iocb) 785 { 786 struct qlt_plogi_ack_t *pla; 787 788 lockdep_assert_held(&vha->hw->hardware_lock); 789 790 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 791 if (pla->id.b24 == id->b24) { 792 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 793 "%s %d %8phC Term INOT due to new INOT", 794 __func__, __LINE__, 795 pla->iocb.u.isp24.port_name); 796 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 798 return pla; 799 } 800 } 801 802 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 803 if (!pla) { 804 ql_dbg(ql_dbg_async, vha, 0x5088, 805 "qla_target(%d): Allocation of plogi_ack failed\n", 806 vha->vp_idx); 807 return NULL; 808 } 809 810 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 811 pla->id = *id; 812 list_add_tail(&pla->list, &vha->plogi_ack_list); 813 814 return pla; 815 } 816 817 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 818 struct qlt_plogi_ack_t *pla) 819 { 820 struct imm_ntfy_from_isp *iocb = &pla->iocb; 821 port_id_t port_id; 822 uint16_t loop_id; 823 fc_port_t *fcport = pla->fcport; 824 825 BUG_ON(!pla->ref_count); 826 pla->ref_count--; 827 828 if (pla->ref_count) 829 return; 830 831 ql_dbg(ql_dbg_disc, vha, 0x5089, 832 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 833 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 834 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 835 iocb->u.isp24.port_id[0], 836 le16_to_cpu(iocb->u.isp24.nport_handle), 837 iocb->u.isp24.exchange_address, iocb->ox_id); 838 839 port_id.b.domain = iocb->u.isp24.port_id[2]; 840 port_id.b.area = iocb->u.isp24.port_id[1]; 841 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 842 port_id.b.rsvd_1 = 0; 843 844 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 845 846 fcport->loop_id = loop_id; 847 fcport->d_id = port_id; 848 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 849 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 850 else 851 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 852 853 list_for_each_entry(fcport, &vha->vp_fcports, list) { 854 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 855 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 856 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 857 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 858 } 859 860 list_del(&pla->list); 861 kmem_cache_free(qla_tgt_plogi_cachep, pla); 862 } 863 864 void 865 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 866 struct fc_port *sess, enum qlt_plogi_link_t link) 867 { 868 struct imm_ntfy_from_isp *iocb = &pla->iocb; 869 /* Inc ref_count first because link might already be pointing at pla */ 870 pla->ref_count++; 871 872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 873 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 874 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 875 sess, link, sess->port_name, 876 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 877 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 878 pla->ref_count, pla, link); 879 880 if (link == QLT_PLOGI_LINK_CONFLICT) { 881 switch (sess->disc_state) { 882 case DSC_DELETED: 883 case DSC_DELETE_PEND: 884 pla->ref_count--; 885 return; 886 default: 887 break; 888 } 889 } 890 891 if (sess->plogi_link[link]) 892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 893 894 if (link == QLT_PLOGI_LINK_SAME_WWN) 895 pla->fcport = sess; 896 897 sess->plogi_link[link] = pla; 898 } 899 900 typedef struct { 901 /* These fields must be initialized by the caller */ 902 port_id_t id; 903 /* 904 * number of cmds dropped while we were waiting for 905 * initiator to ack LOGO initialize to 1 if LOGO is 906 * triggered by a command, otherwise, to 0 907 */ 908 int cmd_count; 909 910 /* These fields are used by callee */ 911 struct list_head list; 912 } qlt_port_logo_t; 913 914 static void 915 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 916 { 917 qlt_port_logo_t *tmp; 918 int res; 919 920 mutex_lock(&vha->vha_tgt.tgt_mutex); 921 922 list_for_each_entry(tmp, &vha->logo_list, list) { 923 if (tmp->id.b24 == logo->id.b24) { 924 tmp->cmd_count += logo->cmd_count; 925 mutex_unlock(&vha->vha_tgt.tgt_mutex); 926 return; 927 } 928 } 929 930 list_add_tail(&logo->list, &vha->logo_list); 931 932 mutex_unlock(&vha->vha_tgt.tgt_mutex); 933 934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 935 936 mutex_lock(&vha->vha_tgt.tgt_mutex); 937 list_del(&logo->list); 938 mutex_unlock(&vha->vha_tgt.tgt_mutex); 939 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 943 logo->cmd_count, res); 944 } 945 946 void qlt_free_session_done(struct work_struct *work) 947 { 948 struct fc_port *sess = container_of(work, struct fc_port, 949 free_work); 950 struct qla_tgt *tgt = sess->tgt; 951 struct scsi_qla_host *vha = sess->vha; 952 struct qla_hw_data *ha = vha->hw; 953 unsigned long flags; 954 bool logout_started = false; 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 956 struct qlt_plogi_ack_t *own = 957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 958 959 ql_dbg(ql_dbg_disc, vha, 0xf084, 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 964 sess->logout_on_delete, sess->keep_nport_handle, 965 sess->send_els_logo); 966 967 if (!IS_SW_RESV_ADDR(sess->d_id)) { 968 qla2x00_mark_device_lost(vha, sess, 0); 969 970 if (sess->send_els_logo) { 971 qlt_port_logo_t logo; 972 973 logo.id = sess->d_id; 974 logo.cmd_count = 0; 975 if (!own) 976 qlt_send_first_logo(vha, &logo); 977 sess->send_els_logo = 0; 978 } 979 980 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 981 int rc; 982 983 if (!own || 984 (own && 985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 986 rc = qla2x00_post_async_logout_work(vha, sess, 987 NULL); 988 if (rc != QLA_SUCCESS) 989 ql_log(ql_log_warn, vha, 0xf085, 990 "Schedule logo failed sess %p rc %d\n", 991 sess, rc); 992 else 993 logout_started = true; 994 } else if (own && (own->iocb.u.isp24.status_subcode == 995 ELS_PRLI) && ha->flags.rida_fmt2) { 996 rc = qla2x00_post_async_prlo_work(vha, sess, 997 NULL); 998 if (rc != QLA_SUCCESS) 999 ql_log(ql_log_warn, vha, 0xf085, 1000 "Schedule PRLO failed sess %p rc %d\n", 1001 sess, rc); 1002 else 1003 logout_started = true; 1004 } 1005 } /* if sess->logout_on_delete */ 1006 1007 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1008 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1009 sess->nvme_flag |= NVME_FLAG_DELETING; 1010 qla_nvme_unregister_remote_port(sess); 1011 } 1012 } 1013 1014 /* 1015 * Release the target session for FC Nexus from fabric module code. 1016 */ 1017 if (sess->se_sess != NULL) 1018 ha->tgt.tgt_ops->free_session(sess); 1019 1020 if (logout_started) { 1021 bool traced = false; 1022 u16 cnt = 0; 1023 1024 while (!READ_ONCE(sess->logout_completed)) { 1025 if (!traced) { 1026 ql_dbg(ql_dbg_disc, vha, 0xf086, 1027 "%s: waiting for sess %p logout\n", 1028 __func__, sess); 1029 traced = true; 1030 } 1031 msleep(100); 1032 cnt++; 1033 if (cnt > 200) 1034 break; 1035 } 1036 1037 ql_dbg(ql_dbg_disc, vha, 0xf087, 1038 "%s: sess %p logout completed\n", __func__, sess); 1039 } 1040 1041 if (sess->logo_ack_needed) { 1042 sess->logo_ack_needed = 0; 1043 qla24xx_async_notify_ack(vha, sess, 1044 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1045 } 1046 1047 spin_lock_irqsave(&vha->work_lock, flags); 1048 sess->flags &= ~FCF_ASYNC_SENT; 1049 spin_unlock_irqrestore(&vha->work_lock, flags); 1050 1051 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1052 if (sess->se_sess) { 1053 sess->se_sess = NULL; 1054 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1055 tgt->sess_count--; 1056 } 1057 1058 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1059 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1060 sess->deleted = QLA_SESS_DELETED; 1061 1062 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1063 vha->fcport_count--; 1064 sess->login_succ = 0; 1065 } 1066 1067 qla2x00_clear_loop_id(sess); 1068 1069 if (sess->conflict) { 1070 sess->conflict->login_pause = 0; 1071 sess->conflict = NULL; 1072 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1073 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1074 } 1075 1076 { 1077 struct qlt_plogi_ack_t *con = 1078 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1079 struct imm_ntfy_from_isp *iocb; 1080 1081 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1082 1083 if (con) { 1084 iocb = &con->iocb; 1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1086 "se_sess %p / sess %p port %8phC is gone," 1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1088 sess->se_sess, sess, sess->port_name, 1089 own ? "releasing own PLOGI" : "no own PLOGI pending", 1090 own ? own->ref_count : -1, 1091 iocb->u.isp24.port_name, con->ref_count); 1092 qlt_plogi_ack_unref(vha, con); 1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1094 } else { 1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1097 sess->se_sess, sess, sess->port_name, 1098 own ? "releasing own PLOGI" : 1099 "no own PLOGI pending", 1100 own ? own->ref_count : -1); 1101 } 1102 1103 if (own) { 1104 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1105 qlt_plogi_ack_unref(vha, own); 1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1107 } 1108 } 1109 1110 sess->explicit_logout = 0; 1111 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1112 sess->free_pending = 0; 1113 1114 qla2x00_dfs_remove_rport(vha, sess); 1115 1116 ql_dbg(ql_dbg_disc, vha, 0xf001, 1117 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1118 sess, sess->port_name, vha->fcport_count); 1119 1120 if (tgt && (tgt->sess_count == 0)) 1121 wake_up_all(&tgt->waitQ); 1122 1123 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1124 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1125 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1126 switch (vha->host->active_mode) { 1127 case MODE_INITIATOR: 1128 case MODE_DUAL: 1129 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1130 qla2xxx_wake_dpc(vha); 1131 break; 1132 case MODE_TARGET: 1133 default: 1134 /* no-op */ 1135 break; 1136 } 1137 } 1138 1139 if (vha->fcport_count == 0) 1140 wake_up_all(&vha->fcport_waitQ); 1141 } 1142 1143 /* ha->tgt.sess_lock supposed to be held on entry */ 1144 void qlt_unreg_sess(struct fc_port *sess) 1145 { 1146 struct scsi_qla_host *vha = sess->vha; 1147 unsigned long flags; 1148 1149 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1150 "%s sess %p for deletion %8phC\n", 1151 __func__, sess, sess->port_name); 1152 1153 spin_lock_irqsave(&sess->vha->work_lock, flags); 1154 if (sess->free_pending) { 1155 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1156 return; 1157 } 1158 sess->free_pending = 1; 1159 /* 1160 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1161 * management from being sent. 1162 */ 1163 sess->flags |= FCF_ASYNC_SENT; 1164 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1165 1166 if (sess->se_sess) 1167 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1168 1169 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1170 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1171 sess->last_rscn_gen = sess->rscn_gen; 1172 sess->last_login_gen = sess->login_gen; 1173 1174 queue_work(sess->vha->hw->wq, &sess->free_work); 1175 } 1176 EXPORT_SYMBOL(qlt_unreg_sess); 1177 1178 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1179 { 1180 struct qla_hw_data *ha = vha->hw; 1181 struct fc_port *sess = NULL; 1182 uint16_t loop_id; 1183 int res = 0; 1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1185 unsigned long flags; 1186 1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1188 if (loop_id == 0xFFFF) { 1189 /* Global event */ 1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1194 } else { 1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1198 } 1199 1200 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1201 "Using sess for qla_tgt_reset: %p\n", sess); 1202 if (!sess) { 1203 res = -ESRCH; 1204 return res; 1205 } 1206 1207 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1210 mcmd, loop_id); 1211 1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1213 } 1214 1215 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1216 { 1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1218 sess->logout_on_delete = 0; 1219 sess->logo_ack_needed = 0; 1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1221 } 1222 } 1223 1224 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1225 { 1226 struct qla_tgt *tgt = sess->tgt; 1227 unsigned long flags; 1228 u16 sec; 1229 1230 switch (sess->disc_state) { 1231 case DSC_DELETE_PEND: 1232 return; 1233 case DSC_DELETED: 1234 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1235 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1236 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1237 wake_up_all(&tgt->waitQ); 1238 1239 if (sess->vha->fcport_count == 0) 1240 wake_up_all(&sess->vha->fcport_waitQ); 1241 return; 1242 } 1243 break; 1244 case DSC_UPD_FCPORT: 1245 /* 1246 * This port is not done reporting to upper layer. 1247 * let it finish 1248 */ 1249 sess->next_disc_state = DSC_DELETE_PEND; 1250 sec = jiffies_to_msecs(jiffies - 1251 sess->jiffies_at_registration)/1000; 1252 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1253 sess->sec_since_registration = sec; 1254 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1255 "%s %8phC : Slow Rport registration(%d Sec)\n", 1256 __func__, sess->port_name, sec); 1257 } 1258 return; 1259 default: 1260 break; 1261 } 1262 1263 spin_lock_irqsave(&sess->vha->work_lock, flags); 1264 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1265 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1266 return; 1267 } 1268 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1270 1271 sess->prli_pend_timer = 0; 1272 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1273 1274 qla24xx_chk_fcp_state(sess); 1275 1276 ql_dbg(ql_dbg_disc, sess->vha, 0xe001, 1277 "Scheduling sess %p for deletion %8phC\n", 1278 sess, sess->port_name); 1279 1280 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1281 } 1282 1283 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1284 { 1285 struct fc_port *sess; 1286 scsi_qla_host_t *vha = tgt->vha; 1287 1288 list_for_each_entry(sess, &vha->vp_fcports, list) { 1289 if (sess->se_sess) 1290 qlt_schedule_sess_for_deletion(sess); 1291 } 1292 1293 /* At this point tgt could be already dead */ 1294 } 1295 1296 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1297 uint16_t *loop_id) 1298 { 1299 struct qla_hw_data *ha = vha->hw; 1300 dma_addr_t gid_list_dma; 1301 struct gid_list_info *gid_list, *gid; 1302 int res, rc, i; 1303 uint16_t entries; 1304 1305 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1306 &gid_list_dma, GFP_KERNEL); 1307 if (!gid_list) { 1308 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1309 "qla_target(%d): DMA Alloc failed of %u\n", 1310 vha->vp_idx, qla2x00_gid_list_size(ha)); 1311 return -ENOMEM; 1312 } 1313 1314 /* Get list of logged in devices */ 1315 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1316 if (rc != QLA_SUCCESS) { 1317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1318 "qla_target(%d): get_id_list() failed: %x\n", 1319 vha->vp_idx, rc); 1320 res = -EBUSY; 1321 goto out_free_id_list; 1322 } 1323 1324 gid = gid_list; 1325 res = -ENOENT; 1326 for (i = 0; i < entries; i++) { 1327 if (gid->al_pa == s_id.al_pa && 1328 gid->area == s_id.area && 1329 gid->domain == s_id.domain) { 1330 *loop_id = le16_to_cpu(gid->loop_id); 1331 res = 0; 1332 break; 1333 } 1334 gid = (void *)gid + ha->gid_list_info_size; 1335 } 1336 1337 out_free_id_list: 1338 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1339 gid_list, gid_list_dma); 1340 return res; 1341 } 1342 1343 /* 1344 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1345 * Caller must put it. 1346 */ 1347 static struct fc_port *qlt_create_sess( 1348 struct scsi_qla_host *vha, 1349 fc_port_t *fcport, 1350 bool local) 1351 { 1352 struct qla_hw_data *ha = vha->hw; 1353 struct fc_port *sess = fcport; 1354 unsigned long flags; 1355 1356 if (vha->vha_tgt.qla_tgt->tgt_stop) 1357 return NULL; 1358 1359 if (fcport->se_sess) { 1360 if (!kref_get_unless_zero(&sess->sess_kref)) { 1361 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1362 "%s: kref_get_unless_zero failed for %8phC\n", 1363 __func__, sess->port_name); 1364 return NULL; 1365 } 1366 return fcport; 1367 } 1368 sess->tgt = vha->vha_tgt.qla_tgt; 1369 sess->local = local; 1370 1371 /* 1372 * Under normal circumstances we want to logout from firmware when 1373 * session eventually ends and release corresponding nport handle. 1374 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1375 * code will adjust these flags as necessary. 1376 */ 1377 sess->logout_on_delete = 1; 1378 sess->keep_nport_handle = 0; 1379 sess->logout_completed = 0; 1380 1381 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1382 &fcport->port_name[0], sess) < 0) { 1383 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1384 "(%d) %8phC check_initiator_node_acl failed\n", 1385 vha->vp_idx, fcport->port_name); 1386 return NULL; 1387 } else { 1388 kref_init(&fcport->sess_kref); 1389 /* 1390 * Take an extra reference to ->sess_kref here to handle 1391 * fc_port access across ->tgt.sess_lock reaquire. 1392 */ 1393 if (!kref_get_unless_zero(&sess->sess_kref)) { 1394 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1395 "%s: kref_get_unless_zero failed for %8phC\n", 1396 __func__, sess->port_name); 1397 return NULL; 1398 } 1399 1400 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1401 if (!IS_SW_RESV_ADDR(sess->d_id)) 1402 vha->vha_tgt.qla_tgt->sess_count++; 1403 1404 qlt_do_generation_tick(vha, &sess->generation); 1405 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1406 } 1407 1408 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1409 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1410 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1411 vha->vha_tgt.qla_tgt->sess_count); 1412 1413 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1414 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1415 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1416 vha->vp_idx, local ? "local " : "", fcport->port_name, 1417 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1418 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1419 1420 return sess; 1421 } 1422 1423 /* 1424 * max_gen - specifies maximum session generation 1425 * at which this deletion requestion is still valid 1426 */ 1427 void 1428 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1429 { 1430 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1431 struct fc_port *sess = fcport; 1432 unsigned long flags; 1433 1434 if (!vha->hw->tgt.tgt_ops) 1435 return; 1436 1437 if (!tgt) 1438 return; 1439 1440 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1441 if (tgt->tgt_stop) { 1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1443 return; 1444 } 1445 if (!sess->se_sess) { 1446 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1447 return; 1448 } 1449 1450 if (max_gen - sess->generation < 0) { 1451 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1452 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1453 "Ignoring stale deletion request for se_sess %p / sess %p" 1454 " for port %8phC, req_gen %d, sess_gen %d\n", 1455 sess->se_sess, sess, sess->port_name, max_gen, 1456 sess->generation); 1457 return; 1458 } 1459 1460 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1461 1462 sess->local = 1; 1463 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1464 qlt_schedule_sess_for_deletion(sess); 1465 } 1466 1467 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1468 { 1469 struct qla_hw_data *ha = tgt->ha; 1470 unsigned long flags; 1471 int res; 1472 /* 1473 * We need to protect against race, when tgt is freed before or 1474 * inside wake_up() 1475 */ 1476 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1477 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1478 "tgt %p, sess_count=%d\n", 1479 tgt, tgt->sess_count); 1480 res = (tgt->sess_count == 0); 1481 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1482 1483 return res; 1484 } 1485 1486 /* Called by tcm_qla2xxx configfs code */ 1487 int qlt_stop_phase1(struct qla_tgt *tgt) 1488 { 1489 struct scsi_qla_host *vha = tgt->vha; 1490 struct qla_hw_data *ha = tgt->ha; 1491 unsigned long flags; 1492 1493 mutex_lock(&ha->optrom_mutex); 1494 mutex_lock(&qla_tgt_mutex); 1495 1496 if (tgt->tgt_stop || tgt->tgt_stopped) { 1497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1498 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1499 mutex_unlock(&qla_tgt_mutex); 1500 mutex_unlock(&ha->optrom_mutex); 1501 return -EPERM; 1502 } 1503 1504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1505 vha->host_no, vha); 1506 /* 1507 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1508 * Lock is needed, because we still can get an incoming packet. 1509 */ 1510 mutex_lock(&vha->vha_tgt.tgt_mutex); 1511 tgt->tgt_stop = 1; 1512 qlt_clear_tgt_db(tgt); 1513 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1514 mutex_unlock(&qla_tgt_mutex); 1515 1516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1517 "Waiting for sess works (tgt %p)", tgt); 1518 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1519 while (!list_empty(&tgt->sess_works_list)) { 1520 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1521 flush_scheduled_work(); 1522 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1523 } 1524 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1525 1526 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1527 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1528 1529 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1530 1531 /* Big hammer */ 1532 if (!ha->flags.host_shutting_down && 1533 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1534 qlt_disable_vha(vha); 1535 1536 /* Wait for sessions to clear out (just in case) */ 1537 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1538 mutex_unlock(&ha->optrom_mutex); 1539 1540 return 0; 1541 } 1542 EXPORT_SYMBOL(qlt_stop_phase1); 1543 1544 /* Called by tcm_qla2xxx configfs code */ 1545 void qlt_stop_phase2(struct qla_tgt *tgt) 1546 { 1547 scsi_qla_host_t *vha = tgt->vha; 1548 1549 if (tgt->tgt_stopped) { 1550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1551 "Already in tgt->tgt_stopped state\n"); 1552 dump_stack(); 1553 return; 1554 } 1555 if (!tgt->tgt_stop) { 1556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1557 "%s: phase1 stop is not completed\n", __func__); 1558 dump_stack(); 1559 return; 1560 } 1561 1562 mutex_lock(&vha->vha_tgt.tgt_mutex); 1563 tgt->tgt_stop = 0; 1564 tgt->tgt_stopped = 1; 1565 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1566 1567 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1568 tgt); 1569 1570 switch (vha->qlini_mode) { 1571 case QLA2XXX_INI_MODE_EXCLUSIVE: 1572 vha->flags.online = 1; 1573 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1574 break; 1575 default: 1576 break; 1577 } 1578 } 1579 EXPORT_SYMBOL(qlt_stop_phase2); 1580 1581 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1582 static void qlt_release(struct qla_tgt *tgt) 1583 { 1584 scsi_qla_host_t *vha = tgt->vha; 1585 void *node; 1586 u64 key = 0; 1587 u16 i; 1588 struct qla_qpair_hint *h; 1589 struct qla_hw_data *ha = vha->hw; 1590 1591 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1592 qlt_stop_phase1(tgt); 1593 1594 if (!tgt->tgt_stopped) 1595 qlt_stop_phase2(tgt); 1596 1597 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1598 unsigned long flags; 1599 1600 h = &tgt->qphints[i]; 1601 if (h->qpair) { 1602 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1603 list_del(&h->hint_elem); 1604 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1605 h->qpair = NULL; 1606 } 1607 } 1608 kfree(tgt->qphints); 1609 mutex_lock(&qla_tgt_mutex); 1610 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1611 mutex_unlock(&qla_tgt_mutex); 1612 1613 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1614 btree_remove64(&tgt->lun_qpair_map, key); 1615 1616 btree_destroy64(&tgt->lun_qpair_map); 1617 1618 if (vha->vp_idx) 1619 if (ha->tgt.tgt_ops && 1620 ha->tgt.tgt_ops->remove_target && 1621 vha->vha_tgt.target_lport_ptr) 1622 ha->tgt.tgt_ops->remove_target(vha); 1623 1624 vha->vha_tgt.qla_tgt = NULL; 1625 1626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1627 "Release of tgt %p finished\n", tgt); 1628 1629 kfree(tgt); 1630 } 1631 1632 /* ha->hardware_lock supposed to be held on entry */ 1633 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1634 const void *param, unsigned int param_size) 1635 { 1636 struct qla_tgt_sess_work_param *prm; 1637 unsigned long flags; 1638 1639 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1640 if (!prm) { 1641 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1642 "qla_target(%d): Unable to create session " 1643 "work, command will be refused", 0); 1644 return -ENOMEM; 1645 } 1646 1647 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1648 "Scheduling work (type %d, prm %p)" 1649 " to find session for param %p (size %d, tgt %p)\n", 1650 type, prm, param, param_size, tgt); 1651 1652 prm->type = type; 1653 memcpy(&prm->tm_iocb, param, param_size); 1654 1655 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1656 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1657 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1658 1659 schedule_work(&tgt->sess_work); 1660 1661 return 0; 1662 } 1663 1664 /* 1665 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1666 */ 1667 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1668 struct imm_ntfy_from_isp *ntfy, 1669 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1670 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1671 { 1672 struct scsi_qla_host *vha = qpair->vha; 1673 struct qla_hw_data *ha = vha->hw; 1674 request_t *pkt; 1675 struct nack_to_isp *nack; 1676 1677 if (!ha->flags.fw_started) 1678 return; 1679 1680 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1681 1682 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1683 if (!pkt) { 1684 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1685 "qla_target(%d): %s failed: unable to allocate " 1686 "request packet\n", vha->vp_idx, __func__); 1687 return; 1688 } 1689 1690 if (vha->vha_tgt.qla_tgt != NULL) 1691 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1692 1693 pkt->entry_type = NOTIFY_ACK_TYPE; 1694 pkt->entry_count = 1; 1695 1696 nack = (struct nack_to_isp *)pkt; 1697 nack->ox_id = ntfy->ox_id; 1698 1699 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1700 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1701 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1702 nack->u.isp24.flags = ntfy->u.isp24.flags & 1703 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1704 } 1705 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1706 nack->u.isp24.status = ntfy->u.isp24.status; 1707 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1708 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1709 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1710 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1711 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1712 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1713 nack->u.isp24.srr_reject_code = srr_reject_code; 1714 nack->u.isp24.srr_reject_code_expl = srr_explan; 1715 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1716 1717 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1718 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1719 vha->vp_idx, nack->u.isp24.status); 1720 1721 /* Memory Barrier */ 1722 wmb(); 1723 qla2x00_start_iocbs(vha, qpair->req); 1724 } 1725 1726 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1727 { 1728 struct scsi_qla_host *vha = mcmd->vha; 1729 struct qla_hw_data *ha = vha->hw; 1730 struct abts_resp_to_24xx *resp; 1731 __le32 f_ctl; 1732 uint32_t h; 1733 uint8_t *p; 1734 int rc; 1735 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1736 struct qla_qpair *qpair = mcmd->qpair; 1737 1738 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1739 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1740 ha, mcmd->fc_tm_rsp); 1741 1742 rc = qlt_check_reserve_free_req(qpair, 1); 1743 if (rc) { 1744 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1745 "qla_target(%d): %s failed: unable to allocate request packet\n", 1746 vha->vp_idx, __func__); 1747 return -EAGAIN; 1748 } 1749 1750 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1751 memset(resp, 0, sizeof(*resp)); 1752 1753 h = qlt_make_handle(qpair); 1754 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1755 /* 1756 * CTIO type 7 from the firmware doesn't provide a way to 1757 * know the initiator's LOOP ID, hence we can't find 1758 * the session and, so, the command. 1759 */ 1760 return -EAGAIN; 1761 } else { 1762 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1763 } 1764 1765 resp->handle = make_handle(qpair->req->id, h); 1766 resp->entry_type = ABTS_RESP_24XX; 1767 resp->entry_count = 1; 1768 resp->nport_handle = abts->nport_handle; 1769 resp->vp_index = vha->vp_idx; 1770 resp->sof_type = abts->sof_type; 1771 resp->exchange_address = abts->exchange_address; 1772 resp->fcp_hdr_le = abts->fcp_hdr_le; 1773 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1774 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1775 F_CTL_SEQ_INITIATIVE); 1776 p = (uint8_t *)&f_ctl; 1777 resp->fcp_hdr_le.f_ctl[0] = *p++; 1778 resp->fcp_hdr_le.f_ctl[1] = *p++; 1779 resp->fcp_hdr_le.f_ctl[2] = *p; 1780 1781 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1782 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1783 1784 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1785 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1786 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1787 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1788 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1789 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1790 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1791 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1792 } else { 1793 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1794 resp->payload.ba_rjt.reason_code = 1795 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1796 /* Other bytes are zero */ 1797 } 1798 1799 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1800 1801 /* Memory Barrier */ 1802 wmb(); 1803 if (qpair->reqq_start_iocbs) 1804 qpair->reqq_start_iocbs(qpair); 1805 else 1806 qla2x00_start_iocbs(vha, qpair->req); 1807 1808 return rc; 1809 } 1810 1811 /* 1812 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1813 */ 1814 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1815 struct abts_recv_from_24xx *abts, uint32_t status, 1816 bool ids_reversed) 1817 { 1818 struct scsi_qla_host *vha = qpair->vha; 1819 struct qla_hw_data *ha = vha->hw; 1820 struct abts_resp_to_24xx *resp; 1821 __le32 f_ctl; 1822 uint8_t *p; 1823 1824 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1825 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1826 ha, abts, status); 1827 1828 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1829 NULL); 1830 if (!resp) { 1831 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1832 "qla_target(%d): %s failed: unable to allocate " 1833 "request packet", vha->vp_idx, __func__); 1834 return; 1835 } 1836 1837 resp->entry_type = ABTS_RESP_24XX; 1838 resp->handle = QLA_TGT_SKIP_HANDLE; 1839 resp->entry_count = 1; 1840 resp->nport_handle = abts->nport_handle; 1841 resp->vp_index = vha->vp_idx; 1842 resp->sof_type = abts->sof_type; 1843 resp->exchange_address = abts->exchange_address; 1844 resp->fcp_hdr_le = abts->fcp_hdr_le; 1845 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1846 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1847 F_CTL_SEQ_INITIATIVE); 1848 p = (uint8_t *)&f_ctl; 1849 resp->fcp_hdr_le.f_ctl[0] = *p++; 1850 resp->fcp_hdr_le.f_ctl[1] = *p++; 1851 resp->fcp_hdr_le.f_ctl[2] = *p; 1852 if (ids_reversed) { 1853 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1854 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1855 } else { 1856 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1857 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1858 } 1859 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1860 if (status == FCP_TMF_CMPL) { 1861 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1862 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1863 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1864 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1865 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1866 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1867 } else { 1868 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1869 resp->payload.ba_rjt.reason_code = 1870 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1871 /* Other bytes are zero */ 1872 } 1873 1874 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1875 1876 /* Memory Barrier */ 1877 wmb(); 1878 if (qpair->reqq_start_iocbs) 1879 qpair->reqq_start_iocbs(qpair); 1880 else 1881 qla2x00_start_iocbs(vha, qpair->req); 1882 } 1883 1884 /* 1885 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1886 */ 1887 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1888 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1889 { 1890 struct ctio7_to_24xx *ctio; 1891 u16 tmp; 1892 struct abts_recv_from_24xx *entry; 1893 1894 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1895 if (ctio == NULL) { 1896 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1897 "qla_target(%d): %s failed: unable to allocate " 1898 "request packet\n", vha->vp_idx, __func__); 1899 return; 1900 } 1901 1902 if (mcmd) 1903 /* abts from remote port */ 1904 entry = &mcmd->orig_iocb.abts; 1905 else 1906 /* abts from this driver. */ 1907 entry = (struct abts_recv_from_24xx *)pkt; 1908 1909 /* 1910 * We've got on entrance firmware's response on by us generated 1911 * ABTS response. So, in it ID fields are reversed. 1912 */ 1913 1914 ctio->entry_type = CTIO_TYPE7; 1915 ctio->entry_count = 1; 1916 ctio->nport_handle = entry->nport_handle; 1917 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1918 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1919 ctio->vp_index = vha->vp_idx; 1920 ctio->exchange_addr = entry->exchange_addr_to_abort; 1921 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1922 1923 if (mcmd) { 1924 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1925 1926 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1927 tmp |= (mcmd->abort_io_attr << 9); 1928 else if (qpair->retry_term_cnt & 1) 1929 tmp |= (0x4 << 9); 1930 } else { 1931 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1932 1933 if (qpair->retry_term_cnt & 1) 1934 tmp |= (0x4 << 9); 1935 } 1936 ctio->u.status1.flags = cpu_to_le16(tmp); 1937 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1938 1939 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1940 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1941 le16_to_cpu(ctio->u.status1.flags), 1942 le16_to_cpu(ctio->u.status1.ox_id), 1943 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1944 1945 /* Memory Barrier */ 1946 wmb(); 1947 if (qpair->reqq_start_iocbs) 1948 qpair->reqq_start_iocbs(qpair); 1949 else 1950 qla2x00_start_iocbs(vha, qpair->req); 1951 1952 if (mcmd) 1953 qlt_build_abts_resp_iocb(mcmd); 1954 else 1955 qlt_24xx_send_abts_resp(qpair, 1956 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1957 1958 } 1959 1960 /* drop cmds for the given lun 1961 * XXX only looks for cmds on the port through which lun reset was recieved 1962 * XXX does not go through the list of other port (which may have cmds 1963 * for the same lun) 1964 */ 1965 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1966 { 1967 struct qla_tgt_sess_op *op; 1968 struct qla_tgt_cmd *cmd; 1969 uint32_t key; 1970 unsigned long flags; 1971 1972 key = sid_to_key(s_id); 1973 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1974 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1975 uint32_t op_key; 1976 u64 op_lun; 1977 1978 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1979 op_lun = scsilun_to_int( 1980 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1981 if (op_key == key && op_lun == lun) 1982 op->aborted = true; 1983 } 1984 1985 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1986 uint32_t op_key; 1987 u64 op_lun; 1988 1989 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1990 op_lun = scsilun_to_int( 1991 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1992 if (op_key == key && op_lun == lun) 1993 op->aborted = true; 1994 } 1995 1996 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1997 uint32_t cmd_key; 1998 u64 cmd_lun; 1999 2000 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2001 cmd_lun = scsilun_to_int( 2002 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2003 if (cmd_key == key && cmd_lun == lun) 2004 cmd->aborted = 1; 2005 } 2006 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2007 } 2008 2009 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2010 uint64_t unpacked_lun) 2011 { 2012 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2013 struct qla_qpair_hint *h = NULL; 2014 2015 if (vha->flags.qpairs_available) { 2016 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2017 if (!h) 2018 h = &tgt->qphints[0]; 2019 } else { 2020 h = &tgt->qphints[0]; 2021 } 2022 2023 return h; 2024 } 2025 2026 static void qlt_do_tmr_work(struct work_struct *work) 2027 { 2028 struct qla_tgt_mgmt_cmd *mcmd = 2029 container_of(work, struct qla_tgt_mgmt_cmd, work); 2030 struct qla_hw_data *ha = mcmd->vha->hw; 2031 int rc; 2032 uint32_t tag; 2033 unsigned long flags; 2034 2035 switch (mcmd->tmr_func) { 2036 case QLA_TGT_ABTS: 2037 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2038 break; 2039 default: 2040 tag = 0; 2041 break; 2042 } 2043 2044 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2045 mcmd->tmr_func, tag); 2046 2047 if (rc != 0) { 2048 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2049 switch (mcmd->tmr_func) { 2050 case QLA_TGT_ABTS: 2051 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2052 qlt_build_abts_resp_iocb(mcmd); 2053 break; 2054 case QLA_TGT_LUN_RESET: 2055 case QLA_TGT_CLEAR_TS: 2056 case QLA_TGT_ABORT_TS: 2057 case QLA_TGT_CLEAR_ACA: 2058 case QLA_TGT_TARGET_RESET: 2059 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2060 qla_sam_status); 2061 break; 2062 2063 case QLA_TGT_ABORT_ALL: 2064 case QLA_TGT_NEXUS_LOSS_SESS: 2065 case QLA_TGT_NEXUS_LOSS: 2066 qlt_send_notify_ack(mcmd->qpair, 2067 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2068 break; 2069 } 2070 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2071 2072 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2073 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2074 mcmd->vha->vp_idx, rc); 2075 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2076 } 2077 } 2078 2079 /* ha->hardware_lock supposed to be held on entry */ 2080 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2081 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2082 { 2083 struct qla_hw_data *ha = vha->hw; 2084 struct qla_tgt_mgmt_cmd *mcmd; 2085 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 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 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2114 struct qla_tgt_cmd *abort_cmd; 2115 2116 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2117 le32_to_cpu(abts->exchange_addr_to_abort)); 2118 if (abort_cmd && abort_cmd->qpair) { 2119 mcmd->qpair = abort_cmd->qpair; 2120 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2121 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2122 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2123 } 2124 } 2125 2126 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2127 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2128 2129 return 0; 2130 } 2131 2132 /* 2133 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2134 */ 2135 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2136 struct abts_recv_from_24xx *abts) 2137 { 2138 struct qla_hw_data *ha = vha->hw; 2139 struct fc_port *sess; 2140 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2141 be_id_t s_id; 2142 int rc; 2143 unsigned long flags; 2144 2145 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2147 "qla_target(%d): ABTS: Abort Sequence not " 2148 "supported\n", vha->vp_idx); 2149 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2150 false); 2151 return; 2152 } 2153 2154 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2156 "qla_target(%d): ABTS: Unknown Exchange " 2157 "Address received\n", vha->vp_idx); 2158 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2159 false); 2160 return; 2161 } 2162 2163 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2164 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2165 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2166 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2167 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2168 2169 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2170 2171 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2172 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2173 if (!sess) { 2174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2175 "qla_target(%d): task abort for non-existent session\n", 2176 vha->vp_idx); 2177 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2178 2179 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2180 false); 2181 return; 2182 } 2183 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2184 2185 2186 if (sess->deleted) { 2187 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2188 false); 2189 return; 2190 } 2191 2192 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2193 if (rc != 0) { 2194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2195 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2196 vha->vp_idx, rc); 2197 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2198 false); 2199 return; 2200 } 2201 } 2202 2203 /* 2204 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2205 */ 2206 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2207 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2208 { 2209 struct scsi_qla_host *ha = mcmd->vha; 2210 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2211 struct ctio7_to_24xx *ctio; 2212 uint16_t temp; 2213 2214 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2215 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2216 ha, atio, resp_code); 2217 2218 2219 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2220 if (ctio == NULL) { 2221 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2222 "qla_target(%d): %s failed: unable to allocate " 2223 "request packet\n", ha->vp_idx, __func__); 2224 return; 2225 } 2226 2227 ctio->entry_type = CTIO_TYPE7; 2228 ctio->entry_count = 1; 2229 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2230 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2231 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2232 ctio->vp_index = ha->vp_idx; 2233 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2234 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2235 temp = (atio->u.isp24.attr << 9)| 2236 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2237 ctio->u.status1.flags = cpu_to_le16(temp); 2238 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2239 ctio->u.status1.ox_id = cpu_to_le16(temp); 2240 ctio->u.status1.scsi_status = 2241 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2242 ctio->u.status1.response_len = cpu_to_le16(8); 2243 ctio->u.status1.sense_data[0] = resp_code; 2244 2245 /* Memory Barrier */ 2246 wmb(); 2247 if (qpair->reqq_start_iocbs) 2248 qpair->reqq_start_iocbs(qpair); 2249 else 2250 qla2x00_start_iocbs(ha, qpair->req); 2251 } 2252 2253 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2254 { 2255 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2256 } 2257 EXPORT_SYMBOL(qlt_free_mcmd); 2258 2259 /* 2260 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2261 * reacquire 2262 */ 2263 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2264 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2265 { 2266 struct atio_from_isp *atio = &cmd->atio; 2267 struct ctio7_to_24xx *ctio; 2268 uint16_t temp; 2269 struct scsi_qla_host *vha = cmd->vha; 2270 2271 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2272 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2273 "sense_key=%02x, asc=%02x, ascq=%02x", 2274 vha, atio, scsi_status, sense_key, asc, ascq); 2275 2276 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2277 if (!ctio) { 2278 ql_dbg(ql_dbg_async, vha, 0x3067, 2279 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2280 vha->host_no, __func__); 2281 goto out; 2282 } 2283 2284 ctio->entry_type = CTIO_TYPE7; 2285 ctio->entry_count = 1; 2286 ctio->handle = QLA_TGT_SKIP_HANDLE; 2287 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2288 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2289 ctio->vp_index = vha->vp_idx; 2290 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2291 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2292 temp = (atio->u.isp24.attr << 9) | 2293 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2294 ctio->u.status1.flags = cpu_to_le16(temp); 2295 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2296 ctio->u.status1.ox_id = cpu_to_le16(temp); 2297 ctio->u.status1.scsi_status = 2298 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2299 ctio->u.status1.response_len = cpu_to_le16(18); 2300 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2301 2302 if (ctio->u.status1.residual != 0) 2303 ctio->u.status1.scsi_status |= 2304 cpu_to_le16(SS_RESIDUAL_UNDER); 2305 2306 /* Fixed format sense data. */ 2307 ctio->u.status1.sense_data[0] = 0x70; 2308 ctio->u.status1.sense_data[2] = sense_key; 2309 /* Additional sense length */ 2310 ctio->u.status1.sense_data[7] = 0xa; 2311 /* ASC and ASCQ */ 2312 ctio->u.status1.sense_data[12] = asc; 2313 ctio->u.status1.sense_data[13] = ascq; 2314 2315 /* Memory Barrier */ 2316 wmb(); 2317 2318 if (qpair->reqq_start_iocbs) 2319 qpair->reqq_start_iocbs(qpair); 2320 else 2321 qla2x00_start_iocbs(vha, qpair->req); 2322 2323 out: 2324 return; 2325 } 2326 2327 /* callback from target fabric module code */ 2328 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2329 { 2330 struct scsi_qla_host *vha = mcmd->sess->vha; 2331 struct qla_hw_data *ha = vha->hw; 2332 unsigned long flags; 2333 struct qla_qpair *qpair = mcmd->qpair; 2334 bool free_mcmd = true; 2335 2336 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2337 "TM response mcmd (%p) status %#x state %#x", 2338 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2339 2340 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2341 2342 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2343 /* 2344 * Either the port is not online or this request was from 2345 * previous life, just abort the processing. 2346 */ 2347 ql_dbg(ql_dbg_async, vha, 0xe100, 2348 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2349 vha->flags.online, qla2x00_reset_active(vha), 2350 mcmd->reset_count, qpair->chip_reset); 2351 ha->tgt.tgt_ops->free_mcmd(mcmd); 2352 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2353 return; 2354 } 2355 2356 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2357 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2358 case ELS_LOGO: 2359 case ELS_PRLO: 2360 case ELS_TPRLO: 2361 ql_dbg(ql_dbg_disc, vha, 0x2106, 2362 "TM response logo %8phC status %#x state %#x", 2363 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2364 mcmd->flags); 2365 qlt_schedule_sess_for_deletion(mcmd->sess); 2366 break; 2367 default: 2368 qlt_send_notify_ack(vha->hw->base_qpair, 2369 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2370 break; 2371 } 2372 } else { 2373 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2374 qlt_build_abts_resp_iocb(mcmd); 2375 free_mcmd = false; 2376 } else 2377 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2378 mcmd->fc_tm_rsp); 2379 } 2380 /* 2381 * Make the callback for ->free_mcmd() to queue_work() and invoke 2382 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2383 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2384 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2385 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2386 * qlt_xmit_tm_rsp() returns here.. 2387 */ 2388 if (free_mcmd) 2389 ha->tgt.tgt_ops->free_mcmd(mcmd); 2390 2391 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2392 } 2393 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2394 2395 /* No locks */ 2396 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2397 { 2398 struct qla_tgt_cmd *cmd = prm->cmd; 2399 2400 BUG_ON(cmd->sg_cnt == 0); 2401 2402 prm->sg = (struct scatterlist *)cmd->sg; 2403 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2404 cmd->sg_cnt, cmd->dma_data_direction); 2405 if (unlikely(prm->seg_cnt == 0)) 2406 goto out_err; 2407 2408 prm->cmd->sg_mapped = 1; 2409 2410 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2411 /* 2412 * If greater than four sg entries then we need to allocate 2413 * the continuation entries 2414 */ 2415 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2416 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2417 QLA_TGT_DATASEGS_PER_CMD_24XX, 2418 QLA_TGT_DATASEGS_PER_CONT_24XX); 2419 } else { 2420 /* DIF */ 2421 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2422 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2423 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2424 prm->tot_dsds = prm->seg_cnt; 2425 } else 2426 prm->tot_dsds = prm->seg_cnt; 2427 2428 if (cmd->prot_sg_cnt) { 2429 prm->prot_sg = cmd->prot_sg; 2430 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2431 cmd->prot_sg, cmd->prot_sg_cnt, 2432 cmd->dma_data_direction); 2433 if (unlikely(prm->prot_seg_cnt == 0)) 2434 goto out_err; 2435 2436 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2437 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2438 /* Dif Bundling not support here */ 2439 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2440 cmd->blk_sz); 2441 prm->tot_dsds += prm->prot_seg_cnt; 2442 } else 2443 prm->tot_dsds += prm->prot_seg_cnt; 2444 } 2445 } 2446 2447 return 0; 2448 2449 out_err: 2450 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2451 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2452 0, prm->cmd->sg_cnt); 2453 return -1; 2454 } 2455 2456 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2457 { 2458 struct qla_hw_data *ha; 2459 struct qla_qpair *qpair; 2460 2461 if (!cmd->sg_mapped) 2462 return; 2463 2464 qpair = cmd->qpair; 2465 2466 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2467 cmd->dma_data_direction); 2468 cmd->sg_mapped = 0; 2469 2470 if (cmd->prot_sg_cnt) 2471 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2472 cmd->dma_data_direction); 2473 2474 if (!cmd->ctx) 2475 return; 2476 ha = vha->hw; 2477 if (cmd->ctx_dsd_alloced) 2478 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2479 2480 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2481 } 2482 2483 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2484 uint32_t req_cnt) 2485 { 2486 uint32_t cnt; 2487 struct req_que *req = qpair->req; 2488 2489 if (req->cnt < (req_cnt + 2)) { 2490 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2491 rd_reg_dword_relaxed(req->req_q_out)); 2492 2493 if (req->ring_index < cnt) 2494 req->cnt = cnt - req->ring_index; 2495 else 2496 req->cnt = req->length - (req->ring_index - cnt); 2497 2498 if (unlikely(req->cnt < (req_cnt + 2))) 2499 return -EAGAIN; 2500 } 2501 2502 req->cnt -= req_cnt; 2503 2504 return 0; 2505 } 2506 2507 /* 2508 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2509 */ 2510 static inline void *qlt_get_req_pkt(struct req_que *req) 2511 { 2512 /* Adjust ring index. */ 2513 req->ring_index++; 2514 if (req->ring_index == req->length) { 2515 req->ring_index = 0; 2516 req->ring_ptr = req->ring; 2517 } else { 2518 req->ring_ptr++; 2519 } 2520 return (cont_entry_t *)req->ring_ptr; 2521 } 2522 2523 /* ha->hardware_lock supposed to be held on entry */ 2524 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2525 { 2526 uint32_t h; 2527 int index; 2528 uint8_t found = 0; 2529 struct req_que *req = qpair->req; 2530 2531 h = req->current_outstanding_cmd; 2532 2533 for (index = 1; index < req->num_outstanding_cmds; index++) { 2534 h++; 2535 if (h == req->num_outstanding_cmds) 2536 h = 1; 2537 2538 if (h == QLA_TGT_SKIP_HANDLE) 2539 continue; 2540 2541 if (!req->outstanding_cmds[h]) { 2542 found = 1; 2543 break; 2544 } 2545 } 2546 2547 if (found) { 2548 req->current_outstanding_cmd = h; 2549 } else { 2550 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2551 "qla_target(%d): Ran out of empty cmd slots\n", 2552 qpair->vha->vp_idx); 2553 h = QLA_TGT_NULL_HANDLE; 2554 } 2555 2556 return h; 2557 } 2558 2559 /* ha->hardware_lock supposed to be held on entry */ 2560 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2561 struct qla_tgt_prm *prm) 2562 { 2563 uint32_t h; 2564 struct ctio7_to_24xx *pkt; 2565 struct atio_from_isp *atio = &prm->cmd->atio; 2566 uint16_t temp; 2567 2568 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2569 prm->pkt = pkt; 2570 memset(pkt, 0, sizeof(*pkt)); 2571 2572 pkt->entry_type = CTIO_TYPE7; 2573 pkt->entry_count = (uint8_t)prm->req_cnt; 2574 pkt->vp_index = prm->cmd->vp_idx; 2575 2576 h = qlt_make_handle(qpair); 2577 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2578 /* 2579 * CTIO type 7 from the firmware doesn't provide a way to 2580 * know the initiator's LOOP ID, hence we can't find 2581 * the session and, so, the command. 2582 */ 2583 return -EAGAIN; 2584 } else 2585 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2586 2587 pkt->handle = make_handle(qpair->req->id, h); 2588 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2589 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2590 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2591 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2592 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2593 temp = atio->u.isp24.attr << 9; 2594 pkt->u.status0.flags |= cpu_to_le16(temp); 2595 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2596 pkt->u.status0.ox_id = cpu_to_le16(temp); 2597 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2598 2599 return 0; 2600 } 2601 2602 /* 2603 * ha->hardware_lock supposed to be held on entry. We have already made sure 2604 * that there is sufficient amount of request entries to not drop it. 2605 */ 2606 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2607 { 2608 int cnt; 2609 struct dsd64 *cur_dsd; 2610 2611 /* Build continuation packets */ 2612 while (prm->seg_cnt > 0) { 2613 cont_a64_entry_t *cont_pkt64 = 2614 (cont_a64_entry_t *)qlt_get_req_pkt( 2615 prm->cmd->qpair->req); 2616 2617 /* 2618 * Make sure that from cont_pkt64 none of 2619 * 64-bit specific fields used for 32-bit 2620 * addressing. Cast to (cont_entry_t *) for 2621 * that. 2622 */ 2623 2624 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2625 2626 cont_pkt64->entry_count = 1; 2627 cont_pkt64->sys_define = 0; 2628 2629 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2630 cur_dsd = cont_pkt64->dsd; 2631 2632 /* Load continuation entry data segments */ 2633 for (cnt = 0; 2634 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2635 cnt++, prm->seg_cnt--) { 2636 append_dsd64(&cur_dsd, prm->sg); 2637 prm->sg = sg_next(prm->sg); 2638 } 2639 } 2640 } 2641 2642 /* 2643 * ha->hardware_lock supposed to be held on entry. We have already made sure 2644 * that there is sufficient amount of request entries to not drop it. 2645 */ 2646 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2647 { 2648 int cnt; 2649 struct dsd64 *cur_dsd; 2650 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2651 2652 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2653 2654 /* Setup packet address segment pointer */ 2655 cur_dsd = &pkt24->u.status0.dsd; 2656 2657 /* Set total data segment count */ 2658 if (prm->seg_cnt) 2659 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2660 2661 if (prm->seg_cnt == 0) { 2662 /* No data transfer */ 2663 cur_dsd->address = 0; 2664 cur_dsd->length = 0; 2665 return; 2666 } 2667 2668 /* If scatter gather */ 2669 2670 /* Load command entry data segments */ 2671 for (cnt = 0; 2672 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2673 cnt++, prm->seg_cnt--) { 2674 append_dsd64(&cur_dsd, prm->sg); 2675 prm->sg = sg_next(prm->sg); 2676 } 2677 2678 qlt_load_cont_data_segments(prm); 2679 } 2680 2681 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2682 { 2683 return cmd->bufflen > 0; 2684 } 2685 2686 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2687 { 2688 struct qla_tgt_cmd *cmd; 2689 struct scsi_qla_host *vha; 2690 2691 /* asc 0x10=dif error */ 2692 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2693 cmd = prm->cmd; 2694 vha = cmd->vha; 2695 /* ASCQ */ 2696 switch (prm->sense_buffer[13]) { 2697 case 1: 2698 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2699 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2700 "se_cmd=%p tag[%x]", 2701 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2702 cmd->atio.u.isp24.exchange_addr); 2703 break; 2704 case 2: 2705 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2706 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2707 "se_cmd=%p tag[%x]", 2708 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2709 cmd->atio.u.isp24.exchange_addr); 2710 break; 2711 case 3: 2712 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2713 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2714 "se_cmd=%p tag[%x]", 2715 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2716 cmd->atio.u.isp24.exchange_addr); 2717 break; 2718 default: 2719 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2720 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2721 "se_cmd=%p tag[%x]", 2722 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2723 cmd->atio.u.isp24.exchange_addr); 2724 break; 2725 } 2726 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2727 } 2728 } 2729 2730 /* 2731 * Called without ha->hardware_lock held 2732 */ 2733 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2734 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2735 uint32_t *full_req_cnt) 2736 { 2737 struct se_cmd *se_cmd = &cmd->se_cmd; 2738 struct qla_qpair *qpair = cmd->qpair; 2739 2740 prm->cmd = cmd; 2741 prm->tgt = cmd->tgt; 2742 prm->pkt = NULL; 2743 prm->rq_result = scsi_status; 2744 prm->sense_buffer = &cmd->sense_buffer[0]; 2745 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2746 prm->sg = NULL; 2747 prm->seg_cnt = -1; 2748 prm->req_cnt = 1; 2749 prm->residual = 0; 2750 prm->add_status_pkt = 0; 2751 prm->prot_sg = NULL; 2752 prm->prot_seg_cnt = 0; 2753 prm->tot_dsds = 0; 2754 2755 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2756 if (qlt_pci_map_calc_cnt(prm) != 0) 2757 return -EAGAIN; 2758 } 2759 2760 *full_req_cnt = prm->req_cnt; 2761 2762 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2763 prm->residual = se_cmd->residual_count; 2764 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2765 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2766 prm->residual, se_cmd->tag, 2767 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2768 cmd->bufflen, prm->rq_result); 2769 prm->rq_result |= SS_RESIDUAL_UNDER; 2770 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2771 prm->residual = se_cmd->residual_count; 2772 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2773 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2774 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2775 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2776 prm->rq_result |= SS_RESIDUAL_OVER; 2777 } 2778 2779 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2780 /* 2781 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2782 * ignored in *xmit_response() below 2783 */ 2784 if (qlt_has_data(cmd)) { 2785 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2786 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2787 (prm->rq_result != 0))) { 2788 prm->add_status_pkt = 1; 2789 (*full_req_cnt)++; 2790 } 2791 } 2792 } 2793 2794 return 0; 2795 } 2796 2797 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2798 int sending_sense) 2799 { 2800 if (cmd->qpair->enable_class_2) 2801 return 0; 2802 2803 if (sending_sense) 2804 return cmd->conf_compl_supported; 2805 else 2806 return cmd->qpair->enable_explicit_conf && 2807 cmd->conf_compl_supported; 2808 } 2809 2810 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2811 struct qla_tgt_prm *prm) 2812 { 2813 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2814 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2815 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2816 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2817 ctio->u.status0.flags |= cpu_to_le16( 2818 CTIO7_FLAGS_EXPLICIT_CONFORM | 2819 CTIO7_FLAGS_CONFORM_REQ); 2820 } 2821 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2822 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2823 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2824 int i; 2825 2826 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2827 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2828 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2829 "Skipping EXPLICIT_CONFORM and " 2830 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2831 "non GOOD status\n"); 2832 goto skip_explict_conf; 2833 } 2834 ctio->u.status1.flags |= cpu_to_le16( 2835 CTIO7_FLAGS_EXPLICIT_CONFORM | 2836 CTIO7_FLAGS_CONFORM_REQ); 2837 } 2838 skip_explict_conf: 2839 ctio->u.status1.flags &= 2840 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2841 ctio->u.status1.flags |= 2842 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2843 ctio->u.status1.scsi_status |= 2844 cpu_to_le16(SS_SENSE_LEN_VALID); 2845 ctio->u.status1.sense_length = 2846 cpu_to_le16(prm->sense_buffer_len); 2847 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2848 uint32_t v; 2849 2850 v = get_unaligned_be32( 2851 &((uint32_t *)prm->sense_buffer)[i]); 2852 put_unaligned_le32(v, 2853 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2854 } 2855 qlt_print_dif_err(prm); 2856 2857 } else { 2858 ctio->u.status1.flags &= 2859 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2860 ctio->u.status1.flags |= 2861 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2862 ctio->u.status1.sense_length = 0; 2863 memset(ctio->u.status1.sense_data, 0, 2864 sizeof(ctio->u.status1.sense_data)); 2865 } 2866 2867 /* Sense with len > 24, is it possible ??? */ 2868 } 2869 2870 static inline int 2871 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2872 { 2873 switch (se_cmd->prot_op) { 2874 case TARGET_PROT_DOUT_INSERT: 2875 case TARGET_PROT_DIN_STRIP: 2876 if (ql2xenablehba_err_chk >= 1) 2877 return 1; 2878 break; 2879 case TARGET_PROT_DOUT_PASS: 2880 case TARGET_PROT_DIN_PASS: 2881 if (ql2xenablehba_err_chk >= 2) 2882 return 1; 2883 break; 2884 case TARGET_PROT_DIN_INSERT: 2885 case TARGET_PROT_DOUT_STRIP: 2886 return 1; 2887 default: 2888 break; 2889 } 2890 return 0; 2891 } 2892 2893 static inline int 2894 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2895 { 2896 switch (se_cmd->prot_op) { 2897 case TARGET_PROT_DIN_INSERT: 2898 case TARGET_PROT_DOUT_INSERT: 2899 case TARGET_PROT_DIN_STRIP: 2900 case TARGET_PROT_DOUT_STRIP: 2901 case TARGET_PROT_DIN_PASS: 2902 case TARGET_PROT_DOUT_PASS: 2903 return 1; 2904 default: 2905 return 0; 2906 } 2907 return 0; 2908 } 2909 2910 /* 2911 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2912 */ 2913 static void 2914 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2915 uint16_t *pfw_prot_opts) 2916 { 2917 struct se_cmd *se_cmd = &cmd->se_cmd; 2918 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2919 scsi_qla_host_t *vha = cmd->tgt->vha; 2920 struct qla_hw_data *ha = vha->hw; 2921 uint32_t t32 = 0; 2922 2923 /* 2924 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2925 * have been immplemented by TCM, before AppTag is avail. 2926 * Look for modesense_handlers[] 2927 */ 2928 ctx->app_tag = 0; 2929 ctx->app_tag_mask[0] = 0x0; 2930 ctx->app_tag_mask[1] = 0x0; 2931 2932 if (IS_PI_UNINIT_CAPABLE(ha)) { 2933 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2934 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2935 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2936 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2937 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2938 } 2939 2940 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2941 2942 switch (se_cmd->prot_type) { 2943 case TARGET_DIF_TYPE0_PROT: 2944 /* 2945 * No check for ql2xenablehba_err_chk, as it 2946 * would be an I/O error if hba tag generation 2947 * is not done. 2948 */ 2949 ctx->ref_tag = cpu_to_le32(lba); 2950 /* enable ALL bytes of the ref tag */ 2951 ctx->ref_tag_mask[0] = 0xff; 2952 ctx->ref_tag_mask[1] = 0xff; 2953 ctx->ref_tag_mask[2] = 0xff; 2954 ctx->ref_tag_mask[3] = 0xff; 2955 break; 2956 case TARGET_DIF_TYPE1_PROT: 2957 /* 2958 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2959 * REF tag, and 16 bit app tag. 2960 */ 2961 ctx->ref_tag = cpu_to_le32(lba); 2962 if (!qla_tgt_ref_mask_check(se_cmd) || 2963 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2964 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2965 break; 2966 } 2967 /* enable ALL bytes of the ref tag */ 2968 ctx->ref_tag_mask[0] = 0xff; 2969 ctx->ref_tag_mask[1] = 0xff; 2970 ctx->ref_tag_mask[2] = 0xff; 2971 ctx->ref_tag_mask[3] = 0xff; 2972 break; 2973 case TARGET_DIF_TYPE2_PROT: 2974 /* 2975 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2976 * tag has to match LBA in CDB + N 2977 */ 2978 ctx->ref_tag = cpu_to_le32(lba); 2979 if (!qla_tgt_ref_mask_check(se_cmd) || 2980 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2981 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2982 break; 2983 } 2984 /* enable ALL bytes of the ref tag */ 2985 ctx->ref_tag_mask[0] = 0xff; 2986 ctx->ref_tag_mask[1] = 0xff; 2987 ctx->ref_tag_mask[2] = 0xff; 2988 ctx->ref_tag_mask[3] = 0xff; 2989 break; 2990 case TARGET_DIF_TYPE3_PROT: 2991 /* For TYPE 3 protection: 16 bit GUARD only */ 2992 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2993 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2994 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2995 break; 2996 } 2997 } 2998 2999 static inline int 3000 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3001 { 3002 struct dsd64 *cur_dsd; 3003 uint32_t transfer_length = 0; 3004 uint32_t data_bytes; 3005 uint32_t dif_bytes; 3006 uint8_t bundling = 1; 3007 struct crc_context *crc_ctx_pkt = NULL; 3008 struct qla_hw_data *ha; 3009 struct ctio_crc2_to_fw *pkt; 3010 dma_addr_t crc_ctx_dma; 3011 uint16_t fw_prot_opts = 0; 3012 struct qla_tgt_cmd *cmd = prm->cmd; 3013 struct se_cmd *se_cmd = &cmd->se_cmd; 3014 uint32_t h; 3015 struct atio_from_isp *atio = &prm->cmd->atio; 3016 struct qla_tc_param tc; 3017 uint16_t t16; 3018 scsi_qla_host_t *vha = cmd->vha; 3019 3020 ha = vha->hw; 3021 3022 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3023 prm->pkt = pkt; 3024 memset(pkt, 0, sizeof(*pkt)); 3025 3026 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3027 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3028 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3029 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3030 3031 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3032 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3033 bundling = 0; 3034 3035 /* Compute dif len and adjust data len to incude protection */ 3036 data_bytes = cmd->bufflen; 3037 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3038 3039 switch (se_cmd->prot_op) { 3040 case TARGET_PROT_DIN_INSERT: 3041 case TARGET_PROT_DOUT_STRIP: 3042 transfer_length = data_bytes; 3043 if (cmd->prot_sg_cnt) 3044 data_bytes += dif_bytes; 3045 break; 3046 case TARGET_PROT_DIN_STRIP: 3047 case TARGET_PROT_DOUT_INSERT: 3048 case TARGET_PROT_DIN_PASS: 3049 case TARGET_PROT_DOUT_PASS: 3050 transfer_length = data_bytes + dif_bytes; 3051 break; 3052 default: 3053 BUG(); 3054 break; 3055 } 3056 3057 if (!qlt_hba_err_chk_enabled(se_cmd)) 3058 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3059 /* HBA error checking enabled */ 3060 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3061 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3062 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3063 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3064 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3065 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3066 } 3067 3068 switch (se_cmd->prot_op) { 3069 case TARGET_PROT_DIN_INSERT: 3070 case TARGET_PROT_DOUT_INSERT: 3071 fw_prot_opts |= PO_MODE_DIF_INSERT; 3072 break; 3073 case TARGET_PROT_DIN_STRIP: 3074 case TARGET_PROT_DOUT_STRIP: 3075 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3076 break; 3077 case TARGET_PROT_DIN_PASS: 3078 case TARGET_PROT_DOUT_PASS: 3079 fw_prot_opts |= PO_MODE_DIF_PASS; 3080 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3081 break; 3082 default:/* Normal Request */ 3083 fw_prot_opts |= PO_MODE_DIF_PASS; 3084 break; 3085 } 3086 3087 /* ---- PKT ---- */ 3088 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3089 pkt->entry_type = CTIO_CRC2; 3090 pkt->entry_count = 1; 3091 pkt->vp_index = cmd->vp_idx; 3092 3093 h = qlt_make_handle(qpair); 3094 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3095 /* 3096 * CTIO type 7 from the firmware doesn't provide a way to 3097 * know the initiator's LOOP ID, hence we can't find 3098 * the session and, so, the command. 3099 */ 3100 return -EAGAIN; 3101 } else 3102 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3103 3104 pkt->handle = make_handle(qpair->req->id, h); 3105 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3106 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3107 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3108 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3109 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3110 3111 /* silence compile warning */ 3112 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3113 pkt->ox_id = cpu_to_le16(t16); 3114 3115 t16 = (atio->u.isp24.attr << 9); 3116 pkt->flags |= cpu_to_le16(t16); 3117 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3118 3119 /* Set transfer direction */ 3120 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3121 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3122 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3123 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3124 3125 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3126 /* Fibre channel byte count */ 3127 pkt->transfer_length = cpu_to_le32(transfer_length); 3128 3129 /* ----- CRC context -------- */ 3130 3131 /* Allocate CRC context from global pool */ 3132 crc_ctx_pkt = cmd->ctx = 3133 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3134 3135 if (!crc_ctx_pkt) 3136 goto crc_queuing_error; 3137 3138 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3139 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3140 3141 /* Set handle */ 3142 crc_ctx_pkt->handle = pkt->handle; 3143 3144 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3145 3146 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3147 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3148 3149 if (!bundling) { 3150 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3151 } else { 3152 /* 3153 * Configure Bundling if we need to fetch interlaving 3154 * protection PCI accesses 3155 */ 3156 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3157 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3158 crc_ctx_pkt->u.bundling.dseg_count = 3159 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3160 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3161 } 3162 3163 /* Finish the common fields of CRC pkt */ 3164 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3165 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3166 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3167 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3168 3169 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3170 tc.vha = vha; 3171 tc.blk_sz = cmd->blk_sz; 3172 tc.bufflen = cmd->bufflen; 3173 tc.sg = cmd->sg; 3174 tc.prot_sg = cmd->prot_sg; 3175 tc.ctx = crc_ctx_pkt; 3176 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3177 3178 /* Walks data segments */ 3179 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3180 3181 if (!bundling && prm->prot_seg_cnt) { 3182 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3183 prm->tot_dsds, &tc)) 3184 goto crc_queuing_error; 3185 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3186 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3187 goto crc_queuing_error; 3188 3189 if (bundling && prm->prot_seg_cnt) { 3190 /* Walks dif segments */ 3191 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3192 3193 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3194 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3195 prm->prot_seg_cnt, cmd)) 3196 goto crc_queuing_error; 3197 } 3198 return QLA_SUCCESS; 3199 3200 crc_queuing_error: 3201 /* Cleanup will be performed by the caller */ 3202 qpair->req->outstanding_cmds[h] = NULL; 3203 3204 return QLA_FUNCTION_FAILED; 3205 } 3206 3207 /* 3208 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3209 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3210 */ 3211 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3212 uint8_t scsi_status) 3213 { 3214 struct scsi_qla_host *vha = cmd->vha; 3215 struct qla_qpair *qpair = cmd->qpair; 3216 struct ctio7_to_24xx *pkt; 3217 struct qla_tgt_prm prm; 3218 uint32_t full_req_cnt = 0; 3219 unsigned long flags = 0; 3220 int res; 3221 3222 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3223 (cmd->sess && cmd->sess->deleted)) { 3224 cmd->state = QLA_TGT_STATE_PROCESSED; 3225 res = 0; 3226 goto free; 3227 } 3228 3229 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3230 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3231 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3232 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3233 &cmd->se_cmd, qpair->id); 3234 3235 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3236 &full_req_cnt); 3237 if (unlikely(res != 0)) 3238 goto free; 3239 3240 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3241 3242 if (xmit_type == QLA_TGT_XMIT_STATUS) 3243 qpair->tgt_counters.core_qla_snd_status++; 3244 else 3245 qpair->tgt_counters.core_qla_que_buf++; 3246 3247 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3248 /* 3249 * Either the port is not online or this request was from 3250 * previous life, just abort the processing. 3251 */ 3252 cmd->state = QLA_TGT_STATE_PROCESSED; 3253 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3254 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3255 vha->flags.online, qla2x00_reset_active(vha), 3256 cmd->reset_count, qpair->chip_reset); 3257 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3258 res = 0; 3259 goto free; 3260 } 3261 3262 /* Does F/W have an IOCBs for this request */ 3263 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3264 if (unlikely(res)) 3265 goto out_unmap_unlock; 3266 3267 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3268 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3269 else 3270 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3271 if (unlikely(res != 0)) { 3272 qpair->req->cnt += full_req_cnt; 3273 goto out_unmap_unlock; 3274 } 3275 3276 pkt = (struct ctio7_to_24xx *)prm.pkt; 3277 3278 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3279 pkt->u.status0.flags |= 3280 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3281 CTIO7_FLAGS_STATUS_MODE_0); 3282 3283 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3284 qlt_load_data_segments(&prm); 3285 3286 if (prm.add_status_pkt == 0) { 3287 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3288 pkt->u.status0.scsi_status = 3289 cpu_to_le16(prm.rq_result); 3290 pkt->u.status0.residual = 3291 cpu_to_le32(prm.residual); 3292 pkt->u.status0.flags |= cpu_to_le16( 3293 CTIO7_FLAGS_SEND_STATUS); 3294 if (qlt_need_explicit_conf(cmd, 0)) { 3295 pkt->u.status0.flags |= 3296 cpu_to_le16( 3297 CTIO7_FLAGS_EXPLICIT_CONFORM | 3298 CTIO7_FLAGS_CONFORM_REQ); 3299 } 3300 } 3301 3302 } else { 3303 /* 3304 * We have already made sure that there is sufficient 3305 * amount of request entries to not drop HW lock in 3306 * req_pkt(). 3307 */ 3308 struct ctio7_to_24xx *ctio = 3309 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3310 qpair->req); 3311 3312 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3313 "Building additional status packet 0x%p.\n", 3314 ctio); 3315 3316 /* 3317 * T10Dif: ctio_crc2_to_fw overlay ontop of 3318 * ctio7_to_24xx 3319 */ 3320 memcpy(ctio, pkt, sizeof(*ctio)); 3321 /* reset back to CTIO7 */ 3322 ctio->entry_count = 1; 3323 ctio->entry_type = CTIO_TYPE7; 3324 ctio->dseg_count = 0; 3325 ctio->u.status1.flags &= ~cpu_to_le16( 3326 CTIO7_FLAGS_DATA_IN); 3327 3328 /* Real finish is ctio_m1's finish */ 3329 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3330 pkt->u.status0.flags |= cpu_to_le16( 3331 CTIO7_FLAGS_DONT_RET_CTIO); 3332 3333 /* qlt_24xx_init_ctio_to_isp will correct 3334 * all neccessary fields that's part of CTIO7. 3335 * There should be no residual of CTIO-CRC2 data. 3336 */ 3337 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3338 &prm); 3339 } 3340 } else 3341 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3342 3343 3344 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3345 cmd->cmd_sent_to_fw = 1; 3346 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3347 3348 /* Memory Barrier */ 3349 wmb(); 3350 if (qpair->reqq_start_iocbs) 3351 qpair->reqq_start_iocbs(qpair); 3352 else 3353 qla2x00_start_iocbs(vha, qpair->req); 3354 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3355 3356 return 0; 3357 3358 out_unmap_unlock: 3359 qlt_unmap_sg(vha, cmd); 3360 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3361 3362 free: 3363 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3364 return res; 3365 } 3366 EXPORT_SYMBOL(qlt_xmit_response); 3367 3368 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3369 { 3370 struct ctio7_to_24xx *pkt; 3371 struct scsi_qla_host *vha = cmd->vha; 3372 struct qla_tgt *tgt = cmd->tgt; 3373 struct qla_tgt_prm prm; 3374 unsigned long flags = 0; 3375 int res = 0; 3376 struct qla_qpair *qpair = cmd->qpair; 3377 3378 memset(&prm, 0, sizeof(prm)); 3379 prm.cmd = cmd; 3380 prm.tgt = tgt; 3381 prm.sg = NULL; 3382 prm.req_cnt = 1; 3383 3384 /* Calculate number of entries and segments required */ 3385 if (qlt_pci_map_calc_cnt(&prm) != 0) 3386 return -EAGAIN; 3387 3388 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3389 (cmd->sess && cmd->sess->deleted)) { 3390 /* 3391 * Either the port is not online or this request was from 3392 * previous life, just abort the processing. 3393 */ 3394 cmd->aborted = 1; 3395 cmd->write_data_transferred = 0; 3396 cmd->state = QLA_TGT_STATE_DATA_IN; 3397 vha->hw->tgt.tgt_ops->handle_data(cmd); 3398 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3399 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3400 vha->flags.online, qla2x00_reset_active(vha), 3401 cmd->reset_count, qpair->chip_reset); 3402 return 0; 3403 } 3404 3405 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3406 /* Does F/W have an IOCBs for this request */ 3407 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3408 if (res != 0) 3409 goto out_unlock_free_unmap; 3410 if (cmd->se_cmd.prot_op) 3411 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3412 else 3413 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3414 3415 if (unlikely(res != 0)) { 3416 qpair->req->cnt += prm.req_cnt; 3417 goto out_unlock_free_unmap; 3418 } 3419 3420 pkt = (struct ctio7_to_24xx *)prm.pkt; 3421 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3422 CTIO7_FLAGS_STATUS_MODE_0); 3423 3424 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3425 qlt_load_data_segments(&prm); 3426 3427 cmd->state = QLA_TGT_STATE_NEED_DATA; 3428 cmd->cmd_sent_to_fw = 1; 3429 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3430 3431 /* Memory Barrier */ 3432 wmb(); 3433 if (qpair->reqq_start_iocbs) 3434 qpair->reqq_start_iocbs(qpair); 3435 else 3436 qla2x00_start_iocbs(vha, qpair->req); 3437 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3438 3439 return res; 3440 3441 out_unlock_free_unmap: 3442 qlt_unmap_sg(vha, cmd); 3443 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3444 3445 return res; 3446 } 3447 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3448 3449 3450 /* 3451 * it is assumed either hardware_lock or qpair lock is held. 3452 */ 3453 static void 3454 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3455 struct ctio_crc_from_fw *sts) 3456 { 3457 uint8_t *ap = &sts->actual_dif[0]; 3458 uint8_t *ep = &sts->expected_dif[0]; 3459 uint64_t lba = cmd->se_cmd.t_task_lba; 3460 uint8_t scsi_status, sense_key, asc, ascq; 3461 unsigned long flags; 3462 struct scsi_qla_host *vha = cmd->vha; 3463 3464 cmd->trc_flags |= TRC_DIF_ERR; 3465 3466 cmd->a_guard = get_unaligned_be16(ap + 0); 3467 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3468 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3469 3470 cmd->e_guard = get_unaligned_be16(ep + 0); 3471 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3472 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3473 3474 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3475 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3476 3477 scsi_status = sense_key = asc = ascq = 0; 3478 3479 /* check appl tag */ 3480 if (cmd->e_app_tag != cmd->a_app_tag) { 3481 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3482 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3483 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3484 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3485 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3486 cmd->atio.u.isp24.fcp_hdr.ox_id); 3487 3488 cmd->dif_err_code = DIF_ERR_APP; 3489 scsi_status = SAM_STAT_CHECK_CONDITION; 3490 sense_key = ABORTED_COMMAND; 3491 asc = 0x10; 3492 ascq = 0x2; 3493 } 3494 3495 /* check ref tag */ 3496 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3497 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3498 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", 3499 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3500 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3501 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3502 cmd->atio.u.isp24.fcp_hdr.ox_id); 3503 3504 cmd->dif_err_code = DIF_ERR_REF; 3505 scsi_status = SAM_STAT_CHECK_CONDITION; 3506 sense_key = ABORTED_COMMAND; 3507 asc = 0x10; 3508 ascq = 0x3; 3509 goto out; 3510 } 3511 3512 /* check guard */ 3513 if (cmd->e_guard != cmd->a_guard) { 3514 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3515 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3516 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3517 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3518 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3519 cmd->atio.u.isp24.fcp_hdr.ox_id); 3520 3521 cmd->dif_err_code = DIF_ERR_GRD; 3522 scsi_status = SAM_STAT_CHECK_CONDITION; 3523 sense_key = ABORTED_COMMAND; 3524 asc = 0x10; 3525 ascq = 0x1; 3526 } 3527 out: 3528 switch (cmd->state) { 3529 case QLA_TGT_STATE_NEED_DATA: 3530 /* handle_data will load DIF error code */ 3531 cmd->state = QLA_TGT_STATE_DATA_IN; 3532 vha->hw->tgt.tgt_ops->handle_data(cmd); 3533 break; 3534 default: 3535 spin_lock_irqsave(&cmd->cmd_lock, flags); 3536 if (cmd->aborted) { 3537 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3538 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3539 break; 3540 } 3541 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3542 3543 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3544 ascq); 3545 /* assume scsi status gets out on the wire. 3546 * Will not wait for completion. 3547 */ 3548 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3549 break; 3550 } 3551 } 3552 3553 /* If hardware_lock held on entry, might drop it, then reaquire */ 3554 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3555 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3556 struct imm_ntfy_from_isp *ntfy) 3557 { 3558 struct nack_to_isp *nack; 3559 struct qla_hw_data *ha = vha->hw; 3560 request_t *pkt; 3561 int ret = 0; 3562 3563 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3564 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3565 3566 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3567 if (pkt == NULL) { 3568 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3569 "qla_target(%d): %s failed: unable to allocate " 3570 "request packet\n", vha->vp_idx, __func__); 3571 return -ENOMEM; 3572 } 3573 3574 pkt->entry_type = NOTIFY_ACK_TYPE; 3575 pkt->entry_count = 1; 3576 pkt->handle = QLA_TGT_SKIP_HANDLE; 3577 3578 nack = (struct nack_to_isp *)pkt; 3579 nack->ox_id = ntfy->ox_id; 3580 3581 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3582 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3583 nack->u.isp24.flags = ntfy->u.isp24.flags & 3584 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3585 } 3586 3587 /* terminate */ 3588 nack->u.isp24.flags |= 3589 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3590 3591 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3592 nack->u.isp24.status = ntfy->u.isp24.status; 3593 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3594 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3595 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3596 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3597 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3598 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3599 3600 qla2x00_start_iocbs(vha, vha->req); 3601 return ret; 3602 } 3603 3604 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3605 struct imm_ntfy_from_isp *imm, int ha_locked) 3606 { 3607 int rc; 3608 3609 WARN_ON_ONCE(!ha_locked); 3610 rc = __qlt_send_term_imm_notif(vha, imm); 3611 pr_debug("rc = %d\n", rc); 3612 } 3613 3614 /* 3615 * If hardware_lock held on entry, might drop it, then reaquire 3616 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3617 */ 3618 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3619 struct qla_tgt_cmd *cmd, 3620 struct atio_from_isp *atio) 3621 { 3622 struct scsi_qla_host *vha = qpair->vha; 3623 struct ctio7_to_24xx *ctio24; 3624 struct qla_hw_data *ha = vha->hw; 3625 request_t *pkt; 3626 int ret = 0; 3627 uint16_t temp; 3628 3629 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3630 3631 if (cmd) 3632 vha = cmd->vha; 3633 3634 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3635 if (pkt == NULL) { 3636 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3637 "qla_target(%d): %s failed: unable to allocate " 3638 "request packet\n", vha->vp_idx, __func__); 3639 return -ENOMEM; 3640 } 3641 3642 if (cmd != NULL) { 3643 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3644 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3645 "qla_target(%d): Terminating cmd %p with " 3646 "incorrect state %d\n", vha->vp_idx, cmd, 3647 cmd->state); 3648 } else 3649 ret = 1; 3650 } 3651 3652 qpair->tgt_counters.num_term_xchg_sent++; 3653 pkt->entry_count = 1; 3654 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3655 3656 ctio24 = (struct ctio7_to_24xx *)pkt; 3657 ctio24->entry_type = CTIO_TYPE7; 3658 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3659 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3660 ctio24->vp_index = vha->vp_idx; 3661 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3662 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3663 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3664 CTIO7_FLAGS_TERMINATE; 3665 ctio24->u.status1.flags = cpu_to_le16(temp); 3666 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3667 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3668 3669 /* Memory Barrier */ 3670 wmb(); 3671 if (qpair->reqq_start_iocbs) 3672 qpair->reqq_start_iocbs(qpair); 3673 else 3674 qla2x00_start_iocbs(vha, qpair->req); 3675 return ret; 3676 } 3677 3678 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3679 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3680 int ul_abort) 3681 { 3682 struct scsi_qla_host *vha; 3683 unsigned long flags = 0; 3684 int rc; 3685 3686 /* why use different vha? NPIV */ 3687 if (cmd) 3688 vha = cmd->vha; 3689 else 3690 vha = qpair->vha; 3691 3692 if (ha_locked) { 3693 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3694 if (rc == -ENOMEM) 3695 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3696 goto done; 3697 } 3698 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3699 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3700 if (rc == -ENOMEM) 3701 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3702 3703 done: 3704 if (cmd && !ul_abort && !cmd->aborted) { 3705 if (cmd->sg_mapped) 3706 qlt_unmap_sg(vha, cmd); 3707 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3708 } 3709 3710 if (!ha_locked) 3711 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3712 3713 return; 3714 } 3715 3716 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3717 { 3718 struct list_head free_list; 3719 struct qla_tgt_cmd *cmd, *tcmd; 3720 3721 vha->hw->tgt.leak_exchg_thresh_hold = 3722 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3723 3724 cmd = tcmd = NULL; 3725 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3726 INIT_LIST_HEAD(&free_list); 3727 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3728 3729 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3730 list_del(&cmd->cmd_list); 3731 /* This cmd was never sent to TCM. There is no need 3732 * to schedule free or call free_cmd 3733 */ 3734 qlt_free_cmd(cmd); 3735 vha->hw->tgt.num_qfull_cmds_alloc--; 3736 } 3737 } 3738 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3739 } 3740 3741 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3742 { 3743 uint32_t total_leaked; 3744 3745 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3746 3747 if (vha->hw->tgt.leak_exchg_thresh_hold && 3748 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3749 3750 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3751 "Chip reset due to exchange starvation: %d/%d.\n", 3752 total_leaked, vha->hw->cur_fw_xcb_count); 3753 3754 if (IS_P3P_TYPE(vha->hw)) 3755 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3756 else 3757 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3758 qla2xxx_wake_dpc(vha); 3759 } 3760 3761 } 3762 3763 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3764 { 3765 struct qla_tgt *tgt = cmd->tgt; 3766 struct scsi_qla_host *vha = tgt->vha; 3767 struct se_cmd *se_cmd = &cmd->se_cmd; 3768 unsigned long flags; 3769 3770 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3771 "qla_target(%d): terminating exchange for aborted cmd=%p " 3772 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3773 se_cmd->tag); 3774 3775 spin_lock_irqsave(&cmd->cmd_lock, flags); 3776 if (cmd->aborted) { 3777 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3778 /* 3779 * It's normal to see 2 calls in this path: 3780 * 1) XFER Rdy completion + CMD_T_ABORT 3781 * 2) TCM TMR - drain_state_list 3782 */ 3783 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3784 "multiple abort. %p transport_state %x, t_state %x, " 3785 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3786 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3787 return -EIO; 3788 } 3789 cmd->aborted = 1; 3790 cmd->trc_flags |= TRC_ABORT; 3791 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3792 3793 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3794 return 0; 3795 } 3796 EXPORT_SYMBOL(qlt_abort_cmd); 3797 3798 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3799 { 3800 struct fc_port *sess = cmd->sess; 3801 3802 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3803 "%s: se_cmd[%p] ox_id %04x\n", 3804 __func__, &cmd->se_cmd, 3805 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3806 3807 BUG_ON(cmd->cmd_in_wq); 3808 3809 if (cmd->sg_mapped) 3810 qlt_unmap_sg(cmd->vha, cmd); 3811 3812 if (!cmd->q_full) 3813 qlt_decr_num_pend_cmds(cmd->vha); 3814 3815 BUG_ON(cmd->sg_mapped); 3816 cmd->jiffies_at_free = get_jiffies_64(); 3817 if (unlikely(cmd->free_sg)) 3818 kfree(cmd->sg); 3819 3820 if (!sess || !sess->se_sess) { 3821 WARN_ON(1); 3822 return; 3823 } 3824 cmd->jiffies_at_free = get_jiffies_64(); 3825 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3826 } 3827 EXPORT_SYMBOL(qlt_free_cmd); 3828 3829 /* 3830 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3831 */ 3832 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3833 struct qla_tgt_cmd *cmd, uint32_t status) 3834 { 3835 int term = 0; 3836 struct scsi_qla_host *vha = qpair->vha; 3837 3838 if (cmd->se_cmd.prot_op) 3839 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3840 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3841 "se_cmd=%p tag[%x] op %#x/%s", 3842 cmd->lba, cmd->lba, 3843 cmd->num_blks, &cmd->se_cmd, 3844 cmd->atio.u.isp24.exchange_addr, 3845 cmd->se_cmd.prot_op, 3846 prot_op_str(cmd->se_cmd.prot_op)); 3847 3848 if (ctio != NULL) { 3849 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3850 3851 term = !(c->flags & 3852 cpu_to_le16(OF_TERM_EXCH)); 3853 } else 3854 term = 1; 3855 3856 if (term) 3857 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3858 3859 return term; 3860 } 3861 3862 3863 /* ha->hardware_lock supposed to be held on entry */ 3864 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3865 struct rsp_que *rsp, uint32_t handle, void *ctio) 3866 { 3867 void *cmd = NULL; 3868 struct req_que *req; 3869 int qid = GET_QID(handle); 3870 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3871 3872 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3873 return NULL; 3874 3875 if (qid == rsp->req->id) { 3876 req = rsp->req; 3877 } else if (vha->hw->req_q_map[qid]) { 3878 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3879 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3880 vha->vp_idx, rsp->id, handle); 3881 req = vha->hw->req_q_map[qid]; 3882 } else { 3883 return NULL; 3884 } 3885 3886 h &= QLA_CMD_HANDLE_MASK; 3887 3888 if (h != QLA_TGT_NULL_HANDLE) { 3889 if (unlikely(h >= req->num_outstanding_cmds)) { 3890 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3891 "qla_target(%d): Wrong handle %x received\n", 3892 vha->vp_idx, handle); 3893 return NULL; 3894 } 3895 3896 cmd = req->outstanding_cmds[h]; 3897 if (unlikely(cmd == NULL)) { 3898 ql_dbg(ql_dbg_async, vha, 0xe053, 3899 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3900 vha->vp_idx, handle, req->id, rsp->id); 3901 return NULL; 3902 } 3903 req->outstanding_cmds[h] = NULL; 3904 } else if (ctio != NULL) { 3905 /* We can't get loop ID from CTIO7 */ 3906 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3907 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3908 "support NULL handles\n", vha->vp_idx); 3909 return NULL; 3910 } 3911 3912 return cmd; 3913 } 3914 3915 /* 3916 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3917 */ 3918 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3919 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3920 { 3921 struct qla_hw_data *ha = vha->hw; 3922 struct se_cmd *se_cmd; 3923 struct qla_tgt_cmd *cmd; 3924 struct qla_qpair *qpair = rsp->qpair; 3925 3926 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3927 /* That could happen only in case of an error/reset/abort */ 3928 if (status != CTIO_SUCCESS) { 3929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3930 "Intermediate CTIO received" 3931 " (status %x)\n", status); 3932 } 3933 return; 3934 } 3935 3936 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3937 if (cmd == NULL) 3938 return; 3939 3940 se_cmd = &cmd->se_cmd; 3941 cmd->cmd_sent_to_fw = 0; 3942 3943 qlt_unmap_sg(vha, cmd); 3944 3945 if (unlikely(status != CTIO_SUCCESS)) { 3946 switch (status & 0xFFFF) { 3947 case CTIO_INVALID_RX_ID: 3948 if (printk_ratelimit()) 3949 dev_info(&vha->hw->pdev->dev, 3950 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3951 vha->vp_idx, cmd->atio.u.isp24.attr, 3952 ((cmd->ctio_flags >> 9) & 0xf), 3953 cmd->ctio_flags); 3954 3955 break; 3956 case CTIO_LIP_RESET: 3957 case CTIO_TARGET_RESET: 3958 case CTIO_ABORTED: 3959 /* driver request abort via Terminate exchange */ 3960 case CTIO_TIMEOUT: 3961 /* They are OK */ 3962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3963 "qla_target(%d): CTIO with " 3964 "status %#x received, state %x, se_cmd %p, " 3965 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3966 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3967 status, cmd->state, se_cmd); 3968 break; 3969 3970 case CTIO_PORT_LOGGED_OUT: 3971 case CTIO_PORT_UNAVAILABLE: 3972 { 3973 int logged_out = 3974 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3975 3976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3977 "qla_target(%d): CTIO with %s status %x " 3978 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3979 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3980 status, cmd->state, se_cmd); 3981 3982 if (logged_out && cmd->sess) { 3983 /* 3984 * Session is already logged out, but we need 3985 * to notify initiator, who's not aware of this 3986 */ 3987 cmd->sess->send_els_logo = 1; 3988 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3989 "%s %d %8phC post del sess\n", 3990 __func__, __LINE__, cmd->sess->port_name); 3991 3992 qlt_schedule_sess_for_deletion(cmd->sess); 3993 } 3994 break; 3995 } 3996 case CTIO_DIF_ERROR: { 3997 struct ctio_crc_from_fw *crc = 3998 (struct ctio_crc_from_fw *)ctio; 3999 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4000 "qla_target(%d): CTIO with DIF_ERROR status %x " 4001 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4002 "expect_dif[0x%llx]\n", 4003 vha->vp_idx, status, cmd->state, se_cmd, 4004 *((u64 *)&crc->actual_dif[0]), 4005 *((u64 *)&crc->expected_dif[0])); 4006 4007 qlt_handle_dif_error(qpair, cmd, ctio); 4008 return; 4009 } 4010 default: 4011 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4012 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4013 vha->vp_idx, status, cmd->state, se_cmd); 4014 break; 4015 } 4016 4017 4018 /* "cmd->aborted" means 4019 * cmd is already aborted/terminated, we don't 4020 * need to terminate again. The exchange is already 4021 * cleaned up/freed at FW level. Just cleanup at driver 4022 * level. 4023 */ 4024 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4025 (!cmd->aborted)) { 4026 cmd->trc_flags |= TRC_CTIO_ERR; 4027 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4028 return; 4029 } 4030 } 4031 4032 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4033 cmd->trc_flags |= TRC_CTIO_DONE; 4034 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4035 cmd->state = QLA_TGT_STATE_DATA_IN; 4036 4037 if (status == CTIO_SUCCESS) 4038 cmd->write_data_transferred = 1; 4039 4040 ha->tgt.tgt_ops->handle_data(cmd); 4041 return; 4042 } else if (cmd->aborted) { 4043 cmd->trc_flags |= TRC_CTIO_ABORTED; 4044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4045 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4046 } else { 4047 cmd->trc_flags |= TRC_CTIO_STRANGE; 4048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4049 "qla_target(%d): A command in state (%d) should " 4050 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4051 } 4052 4053 if (unlikely(status != CTIO_SUCCESS) && 4054 !cmd->aborted) { 4055 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4056 dump_stack(); 4057 } 4058 4059 ha->tgt.tgt_ops->free_cmd(cmd); 4060 } 4061 4062 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4063 uint8_t task_codes) 4064 { 4065 int fcp_task_attr; 4066 4067 switch (task_codes) { 4068 case ATIO_SIMPLE_QUEUE: 4069 fcp_task_attr = TCM_SIMPLE_TAG; 4070 break; 4071 case ATIO_HEAD_OF_QUEUE: 4072 fcp_task_attr = TCM_HEAD_TAG; 4073 break; 4074 case ATIO_ORDERED_QUEUE: 4075 fcp_task_attr = TCM_ORDERED_TAG; 4076 break; 4077 case ATIO_ACA_QUEUE: 4078 fcp_task_attr = TCM_ACA_TAG; 4079 break; 4080 case ATIO_UNTAGGED: 4081 fcp_task_attr = TCM_SIMPLE_TAG; 4082 break; 4083 default: 4084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4085 "qla_target: unknown task code %x, use ORDERED instead\n", 4086 task_codes); 4087 fcp_task_attr = TCM_ORDERED_TAG; 4088 break; 4089 } 4090 4091 return fcp_task_attr; 4092 } 4093 4094 /* 4095 * Process context for I/O path into tcm_qla2xxx code 4096 */ 4097 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4098 { 4099 scsi_qla_host_t *vha = cmd->vha; 4100 struct qla_hw_data *ha = vha->hw; 4101 struct fc_port *sess = cmd->sess; 4102 struct atio_from_isp *atio = &cmd->atio; 4103 unsigned char *cdb; 4104 unsigned long flags; 4105 uint32_t data_length; 4106 int ret, fcp_task_attr, data_dir, bidi = 0; 4107 struct qla_qpair *qpair = cmd->qpair; 4108 4109 cmd->cmd_in_wq = 0; 4110 cmd->trc_flags |= TRC_DO_WORK; 4111 4112 if (cmd->aborted) { 4113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4114 "cmd with tag %u is aborted\n", 4115 cmd->atio.u.isp24.exchange_addr); 4116 goto out_term; 4117 } 4118 4119 spin_lock_init(&cmd->cmd_lock); 4120 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4121 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4122 4123 if (atio->u.isp24.fcp_cmnd.rddata && 4124 atio->u.isp24.fcp_cmnd.wrdata) { 4125 bidi = 1; 4126 data_dir = DMA_TO_DEVICE; 4127 } else if (atio->u.isp24.fcp_cmnd.rddata) 4128 data_dir = DMA_FROM_DEVICE; 4129 else if (atio->u.isp24.fcp_cmnd.wrdata) 4130 data_dir = DMA_TO_DEVICE; 4131 else 4132 data_dir = DMA_NONE; 4133 4134 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4135 atio->u.isp24.fcp_cmnd.task_attr); 4136 data_length = get_datalen_for_atio(atio); 4137 4138 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4139 fcp_task_attr, data_dir, bidi); 4140 if (ret != 0) 4141 goto out_term; 4142 /* 4143 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4144 */ 4145 ha->tgt.tgt_ops->put_sess(sess); 4146 return; 4147 4148 out_term: 4149 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4150 /* 4151 * cmd has not sent to target yet, so pass NULL as the second 4152 * argument to qlt_send_term_exchange() and free the memory here. 4153 */ 4154 cmd->trc_flags |= TRC_DO_WORK_ERR; 4155 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4156 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4157 4158 qlt_decr_num_pend_cmds(vha); 4159 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4160 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4161 4162 ha->tgt.tgt_ops->put_sess(sess); 4163 } 4164 4165 static void qlt_do_work(struct work_struct *work) 4166 { 4167 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4168 scsi_qla_host_t *vha = cmd->vha; 4169 unsigned long flags; 4170 4171 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4172 list_del(&cmd->cmd_list); 4173 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4174 4175 __qlt_do_work(cmd); 4176 } 4177 4178 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4179 { 4180 unsigned long flags; 4181 struct qla_hw_data *ha = vha->hw; 4182 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4183 void *node; 4184 u64 key = 0; 4185 4186 ql_log(ql_log_info, vha, 0x706c, 4187 "User update Number of Active Qpairs %d\n", 4188 ha->tgt.num_act_qpairs); 4189 4190 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4191 4192 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4193 btree_remove64(&tgt->lun_qpair_map, key); 4194 4195 ha->base_qpair->lun_cnt = 0; 4196 for (key = 0; key < ha->max_qpairs; key++) 4197 if (ha->queue_pair_map[key]) 4198 ha->queue_pair_map[key]->lun_cnt = 0; 4199 4200 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4201 } 4202 4203 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4204 struct qla_tgt_cmd *cmd) 4205 { 4206 struct qla_qpair *qpair, *qp; 4207 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4208 struct qla_qpair_hint *h; 4209 4210 if (vha->flags.qpairs_available) { 4211 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4212 if (unlikely(!h)) { 4213 /* spread lun to qpair ratio evently */ 4214 int lcnt = 0, rc; 4215 struct scsi_qla_host *base_vha = 4216 pci_get_drvdata(vha->hw->pdev); 4217 4218 qpair = vha->hw->base_qpair; 4219 if (qpair->lun_cnt == 0) { 4220 qpair->lun_cnt++; 4221 h = qla_qpair_to_hint(tgt, qpair); 4222 BUG_ON(!h); 4223 rc = btree_insert64(&tgt->lun_qpair_map, 4224 cmd->unpacked_lun, h, GFP_ATOMIC); 4225 if (rc) { 4226 qpair->lun_cnt--; 4227 ql_log(ql_log_info, vha, 0xd037, 4228 "Unable to insert lun %llx into lun_qpair_map\n", 4229 cmd->unpacked_lun); 4230 } 4231 goto out; 4232 } else { 4233 lcnt = qpair->lun_cnt; 4234 } 4235 4236 h = NULL; 4237 list_for_each_entry(qp, &base_vha->qp_list, 4238 qp_list_elem) { 4239 if (qp->lun_cnt == 0) { 4240 qp->lun_cnt++; 4241 h = qla_qpair_to_hint(tgt, qp); 4242 BUG_ON(!h); 4243 rc = btree_insert64(&tgt->lun_qpair_map, 4244 cmd->unpacked_lun, h, GFP_ATOMIC); 4245 if (rc) { 4246 qp->lun_cnt--; 4247 ql_log(ql_log_info, vha, 0xd038, 4248 "Unable to insert lun %llx into lun_qpair_map\n", 4249 cmd->unpacked_lun); 4250 } 4251 qpair = qp; 4252 goto out; 4253 } else { 4254 if (qp->lun_cnt < lcnt) { 4255 lcnt = qp->lun_cnt; 4256 qpair = qp; 4257 continue; 4258 } 4259 } 4260 } 4261 BUG_ON(!qpair); 4262 qpair->lun_cnt++; 4263 h = qla_qpair_to_hint(tgt, qpair); 4264 BUG_ON(!h); 4265 rc = btree_insert64(&tgt->lun_qpair_map, 4266 cmd->unpacked_lun, h, GFP_ATOMIC); 4267 if (rc) { 4268 qpair->lun_cnt--; 4269 ql_log(ql_log_info, vha, 0xd039, 4270 "Unable to insert lun %llx into lun_qpair_map\n", 4271 cmd->unpacked_lun); 4272 } 4273 } 4274 } else { 4275 h = &tgt->qphints[0]; 4276 } 4277 out: 4278 cmd->qpair = h->qpair; 4279 cmd->se_cmd.cpuid = h->cpuid; 4280 } 4281 4282 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4283 struct fc_port *sess, 4284 struct atio_from_isp *atio) 4285 { 4286 struct qla_tgt_cmd *cmd; 4287 4288 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4289 if (!cmd) 4290 return NULL; 4291 4292 cmd->cmd_type = TYPE_TGT_CMD; 4293 memcpy(&cmd->atio, atio, sizeof(*atio)); 4294 cmd->state = QLA_TGT_STATE_NEW; 4295 cmd->tgt = vha->vha_tgt.qla_tgt; 4296 qlt_incr_num_pend_cmds(vha); 4297 cmd->vha = vha; 4298 cmd->sess = sess; 4299 cmd->loop_id = sess->loop_id; 4300 cmd->conf_compl_supported = sess->conf_compl_supported; 4301 4302 cmd->trc_flags = 0; 4303 cmd->jiffies_at_alloc = get_jiffies_64(); 4304 4305 cmd->unpacked_lun = scsilun_to_int( 4306 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4307 qlt_assign_qpair(vha, cmd); 4308 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4309 cmd->vp_idx = vha->vp_idx; 4310 4311 return cmd; 4312 } 4313 4314 /* ha->hardware_lock supposed to be held on entry */ 4315 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4316 struct atio_from_isp *atio) 4317 { 4318 struct qla_hw_data *ha = vha->hw; 4319 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4320 struct fc_port *sess; 4321 struct qla_tgt_cmd *cmd; 4322 unsigned long flags; 4323 port_id_t id; 4324 4325 if (unlikely(tgt->tgt_stop)) { 4326 ql_dbg(ql_dbg_io, vha, 0x3061, 4327 "New command while device %p is shutting down\n", tgt); 4328 return -ENODEV; 4329 } 4330 4331 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4332 if (IS_SW_RESV_ADDR(id)) 4333 return -EBUSY; 4334 4335 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4336 if (unlikely(!sess)) 4337 return -EFAULT; 4338 4339 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4340 * session deletion, but it's still in sess_del_work wq */ 4341 if (sess->deleted) { 4342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4343 "New command while old session %p is being deleted\n", 4344 sess); 4345 return -EFAULT; 4346 } 4347 4348 /* 4349 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4350 */ 4351 if (!kref_get_unless_zero(&sess->sess_kref)) { 4352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4353 "%s: kref_get fail, %8phC oxid %x \n", 4354 __func__, sess->port_name, 4355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4356 return -EFAULT; 4357 } 4358 4359 cmd = qlt_get_tag(vha, sess, atio); 4360 if (!cmd) { 4361 ql_dbg(ql_dbg_io, vha, 0x3062, 4362 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4363 ha->tgt.tgt_ops->put_sess(sess); 4364 return -EBUSY; 4365 } 4366 4367 cmd->cmd_in_wq = 1; 4368 cmd->trc_flags |= TRC_NEW_CMD; 4369 4370 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4371 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4372 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4373 4374 INIT_WORK(&cmd->work, qlt_do_work); 4375 if (vha->flags.qpairs_available) { 4376 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4377 } else if (ha->msix_count) { 4378 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4379 queue_work_on(smp_processor_id(), qla_tgt_wq, 4380 &cmd->work); 4381 else 4382 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4383 &cmd->work); 4384 } else { 4385 queue_work(qla_tgt_wq, &cmd->work); 4386 } 4387 4388 return 0; 4389 } 4390 4391 /* ha->hardware_lock supposed to be held on entry */ 4392 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4393 int fn, void *iocb, int flags) 4394 { 4395 struct scsi_qla_host *vha = sess->vha; 4396 struct qla_hw_data *ha = vha->hw; 4397 struct qla_tgt_mgmt_cmd *mcmd; 4398 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4399 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4400 4401 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4402 if (!mcmd) { 4403 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4404 "qla_target(%d): Allocation of management " 4405 "command failed, some commands and their data could " 4406 "leak\n", vha->vp_idx); 4407 return -ENOMEM; 4408 } 4409 memset(mcmd, 0, sizeof(*mcmd)); 4410 mcmd->sess = sess; 4411 4412 if (iocb) { 4413 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4414 sizeof(mcmd->orig_iocb.imm_ntfy)); 4415 } 4416 mcmd->tmr_func = fn; 4417 mcmd->flags = flags; 4418 mcmd->reset_count = ha->base_qpair->chip_reset; 4419 mcmd->qpair = h->qpair; 4420 mcmd->vha = vha; 4421 mcmd->se_cmd.cpuid = h->cpuid; 4422 mcmd->unpacked_lun = lun; 4423 4424 switch (fn) { 4425 case QLA_TGT_LUN_RESET: 4426 case QLA_TGT_CLEAR_TS: 4427 case QLA_TGT_ABORT_TS: 4428 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4429 fallthrough; 4430 case QLA_TGT_CLEAR_ACA: 4431 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4432 mcmd->qpair = h->qpair; 4433 mcmd->se_cmd.cpuid = h->cpuid; 4434 break; 4435 4436 case QLA_TGT_TARGET_RESET: 4437 case QLA_TGT_NEXUS_LOSS_SESS: 4438 case QLA_TGT_NEXUS_LOSS: 4439 case QLA_TGT_ABORT_ALL: 4440 default: 4441 /* no-op */ 4442 break; 4443 } 4444 4445 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4446 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4447 &mcmd->work); 4448 4449 return 0; 4450 } 4451 4452 /* ha->hardware_lock supposed to be held on entry */ 4453 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4454 { 4455 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4456 struct qla_hw_data *ha = vha->hw; 4457 struct fc_port *sess; 4458 u64 unpacked_lun; 4459 int fn; 4460 unsigned long flags; 4461 4462 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4463 4464 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4465 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4466 a->u.isp24.fcp_hdr.s_id); 4467 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4468 4469 unpacked_lun = 4470 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4471 4472 if (sess == NULL || sess->deleted) 4473 return -EFAULT; 4474 4475 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4476 } 4477 4478 /* ha->hardware_lock supposed to be held on entry */ 4479 static int __qlt_abort_task(struct scsi_qla_host *vha, 4480 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4481 { 4482 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4483 struct qla_hw_data *ha = vha->hw; 4484 struct qla_tgt_mgmt_cmd *mcmd; 4485 u64 unpacked_lun; 4486 int rc; 4487 4488 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4489 if (mcmd == NULL) { 4490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4491 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4492 vha->vp_idx, __func__); 4493 return -ENOMEM; 4494 } 4495 memset(mcmd, 0, sizeof(*mcmd)); 4496 4497 mcmd->sess = sess; 4498 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4499 sizeof(mcmd->orig_iocb.imm_ntfy)); 4500 4501 unpacked_lun = 4502 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4503 mcmd->reset_count = ha->base_qpair->chip_reset; 4504 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4505 mcmd->qpair = ha->base_qpair; 4506 4507 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4508 le16_to_cpu(iocb->u.isp2x.seq_id)); 4509 if (rc != 0) { 4510 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4511 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4512 vha->vp_idx, rc); 4513 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4514 return -EFAULT; 4515 } 4516 4517 return 0; 4518 } 4519 4520 /* ha->hardware_lock supposed to be held on entry */ 4521 static int qlt_abort_task(struct scsi_qla_host *vha, 4522 struct imm_ntfy_from_isp *iocb) 4523 { 4524 struct qla_hw_data *ha = vha->hw; 4525 struct fc_port *sess; 4526 int loop_id; 4527 unsigned long flags; 4528 4529 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4530 4531 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4532 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4533 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4534 4535 if (sess == NULL) { 4536 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4537 "qla_target(%d): task abort for unexisting " 4538 "session\n", vha->vp_idx); 4539 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4540 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4541 } 4542 4543 return __qlt_abort_task(vha, iocb, sess); 4544 } 4545 4546 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4547 { 4548 if (rc != MBS_COMMAND_COMPLETE) { 4549 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4550 "%s: se_sess %p / sess %p from" 4551 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4552 " LOGO failed: %#x\n", 4553 __func__, 4554 fcport->se_sess, 4555 fcport, 4556 fcport->port_name, fcport->loop_id, 4557 fcport->d_id.b.domain, fcport->d_id.b.area, 4558 fcport->d_id.b.al_pa, rc); 4559 } 4560 4561 fcport->logout_completed = 1; 4562 } 4563 4564 /* 4565 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4566 * 4567 * Schedules sessions with matching port_id/loop_id but different wwn for 4568 * deletion. Returns existing session with matching wwn if present. 4569 * Null otherwise. 4570 */ 4571 struct fc_port * 4572 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4573 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4574 { 4575 struct fc_port *sess = NULL, *other_sess; 4576 uint64_t other_wwn; 4577 4578 *conflict_sess = NULL; 4579 4580 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4581 4582 other_wwn = wwn_to_u64(other_sess->port_name); 4583 4584 if (wwn == other_wwn) { 4585 WARN_ON(sess); 4586 sess = other_sess; 4587 continue; 4588 } 4589 4590 /* find other sess with nport_id collision */ 4591 if (port_id.b24 == other_sess->d_id.b24) { 4592 if (loop_id != other_sess->loop_id) { 4593 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4594 "Invalidating sess %p loop_id %d wwn %llx.\n", 4595 other_sess, other_sess->loop_id, other_wwn); 4596 4597 /* 4598 * logout_on_delete is set by default, but another 4599 * session that has the same s_id/loop_id combo 4600 * might have cleared it when requested this session 4601 * deletion, so don't touch it 4602 */ 4603 qlt_schedule_sess_for_deletion(other_sess); 4604 } else { 4605 /* 4606 * Another wwn used to have our s_id/loop_id 4607 * kill the session, but don't free the loop_id 4608 */ 4609 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4610 "Invalidating sess %p loop_id %d wwn %llx.\n", 4611 other_sess, other_sess->loop_id, other_wwn); 4612 4613 other_sess->keep_nport_handle = 1; 4614 if (other_sess->disc_state != DSC_DELETED) 4615 *conflict_sess = other_sess; 4616 qlt_schedule_sess_for_deletion(other_sess); 4617 } 4618 continue; 4619 } 4620 4621 /* find other sess with nport handle collision */ 4622 if ((loop_id == other_sess->loop_id) && 4623 (loop_id != FC_NO_LOOP_ID)) { 4624 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4625 "Invalidating sess %p loop_id %d wwn %llx.\n", 4626 other_sess, other_sess->loop_id, other_wwn); 4627 4628 /* Same loop_id but different s_id 4629 * Ok to kill and logout */ 4630 qlt_schedule_sess_for_deletion(other_sess); 4631 } 4632 } 4633 4634 return sess; 4635 } 4636 4637 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4638 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4639 { 4640 struct qla_tgt_sess_op *op; 4641 struct qla_tgt_cmd *cmd; 4642 uint32_t key; 4643 int count = 0; 4644 unsigned long flags; 4645 4646 key = (((u32)s_id->b.domain << 16) | 4647 ((u32)s_id->b.area << 8) | 4648 ((u32)s_id->b.al_pa)); 4649 4650 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4651 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4652 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4653 4654 if (op_key == key) { 4655 op->aborted = true; 4656 count++; 4657 } 4658 } 4659 4660 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4661 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4662 4663 if (op_key == key) { 4664 op->aborted = true; 4665 count++; 4666 } 4667 } 4668 4669 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4670 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4671 4672 if (cmd_key == key) { 4673 cmd->aborted = 1; 4674 count++; 4675 } 4676 } 4677 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4678 4679 return count; 4680 } 4681 4682 static int qlt_handle_login(struct scsi_qla_host *vha, 4683 struct imm_ntfy_from_isp *iocb) 4684 { 4685 struct fc_port *sess = NULL, *conflict_sess = NULL; 4686 uint64_t wwn; 4687 port_id_t port_id; 4688 uint16_t loop_id, wd3_lo; 4689 int res = 0; 4690 struct qlt_plogi_ack_t *pla; 4691 unsigned long flags; 4692 4693 lockdep_assert_held(&vha->hw->hardware_lock); 4694 4695 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4696 4697 port_id.b.domain = iocb->u.isp24.port_id[2]; 4698 port_id.b.area = iocb->u.isp24.port_id[1]; 4699 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4700 port_id.b.rsvd_1 = 0; 4701 4702 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4703 4704 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4705 abort_cmds_for_s_id(vha, &port_id); 4706 4707 if (wwn) { 4708 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4709 sess = qlt_find_sess_invalidate_other(vha, wwn, 4710 port_id, loop_id, &conflict_sess); 4711 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4712 } else { 4713 ql_dbg(ql_dbg_disc, vha, 0xffff, 4714 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4715 __func__, __LINE__, loop_id, port_id.b24); 4716 qlt_send_term_imm_notif(vha, iocb, 1); 4717 goto out; 4718 } 4719 4720 if (IS_SW_RESV_ADDR(port_id)) { 4721 res = 1; 4722 goto out; 4723 } 4724 4725 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4726 if (!pla) { 4727 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4728 "%s %d %8phC Term INOT due to mem alloc fail", 4729 __func__, __LINE__, 4730 iocb->u.isp24.port_name); 4731 qlt_send_term_imm_notif(vha, iocb, 1); 4732 goto out; 4733 } 4734 4735 if (conflict_sess) { 4736 conflict_sess->login_gen++; 4737 qlt_plogi_ack_link(vha, pla, conflict_sess, 4738 QLT_PLOGI_LINK_CONFLICT); 4739 } 4740 4741 if (!sess) { 4742 pla->ref_count++; 4743 ql_dbg(ql_dbg_disc, vha, 0xffff, 4744 "%s %d %8phC post new sess\n", 4745 __func__, __LINE__, iocb->u.isp24.port_name); 4746 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4747 qla24xx_post_newsess_work(vha, &port_id, 4748 iocb->u.isp24.port_name, 4749 iocb->u.isp24.u.plogi.node_name, 4750 pla, 0); 4751 else 4752 qla24xx_post_newsess_work(vha, &port_id, 4753 iocb->u.isp24.port_name, NULL, 4754 pla, 0); 4755 4756 goto out; 4757 } 4758 4759 if (sess->disc_state == DSC_UPD_FCPORT) { 4760 u16 sec; 4761 4762 /* 4763 * Remote port registration is still going on from 4764 * previous login. Allow it to finish before we 4765 * accept the new login. 4766 */ 4767 sess->next_disc_state = DSC_DELETE_PEND; 4768 sec = jiffies_to_msecs(jiffies - 4769 sess->jiffies_at_registration) / 1000; 4770 if (sess->sec_since_registration < sec && sec && 4771 !(sec % 5)) { 4772 sess->sec_since_registration = sec; 4773 ql_dbg(ql_dbg_disc, vha, 0xffff, 4774 "%s %8phC - Slow Rport registration (%d Sec)\n", 4775 __func__, sess->port_name, sec); 4776 } 4777 4778 if (!conflict_sess) { 4779 list_del(&pla->list); 4780 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4781 } 4782 4783 qlt_send_term_imm_notif(vha, iocb, 1); 4784 goto out; 4785 } 4786 4787 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4788 sess->d_id = port_id; 4789 sess->login_gen++; 4790 4791 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4792 sess->fw_login_state = DSC_LS_PRLI_PEND; 4793 sess->local = 0; 4794 sess->loop_id = loop_id; 4795 sess->d_id = port_id; 4796 sess->fw_login_state = DSC_LS_PRLI_PEND; 4797 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4798 4799 if (wd3_lo & BIT_7) 4800 sess->conf_compl_supported = 1; 4801 4802 if ((wd3_lo & BIT_4) == 0) 4803 sess->port_type = FCT_INITIATOR; 4804 else 4805 sess->port_type = FCT_TARGET; 4806 4807 } else 4808 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4809 4810 4811 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4812 "%s %d %8phC DS %d\n", 4813 __func__, __LINE__, sess->port_name, sess->disc_state); 4814 4815 switch (sess->disc_state) { 4816 case DSC_DELETED: 4817 case DSC_LOGIN_PEND: 4818 qlt_plogi_ack_unref(vha, pla); 4819 break; 4820 4821 default: 4822 /* 4823 * Under normal circumstances we want to release nport handle 4824 * during LOGO process to avoid nport handle leaks inside FW. 4825 * The exception is when LOGO is done while another PLOGI with 4826 * the same nport handle is waiting as might be the case here. 4827 * Note: there is always a possibily of a race where session 4828 * deletion has already started for other reasons (e.g. ACL 4829 * removal) and now PLOGI arrives: 4830 * 1. if PLOGI arrived in FW after nport handle has been freed, 4831 * FW must have assigned this PLOGI a new/same handle and we 4832 * can proceed ACK'ing it as usual when session deletion 4833 * completes. 4834 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4835 * bit reached it, the handle has now been released. We'll 4836 * get an error when we ACK this PLOGI. Nothing will be sent 4837 * back to initiator. Initiator should eventually retry 4838 * PLOGI and situation will correct itself. 4839 */ 4840 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4841 (sess->d_id.b24 == port_id.b24)); 4842 4843 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4844 "%s %d %8phC post del sess\n", 4845 __func__, __LINE__, sess->port_name); 4846 4847 4848 qlt_schedule_sess_for_deletion(sess); 4849 break; 4850 } 4851 out: 4852 return res; 4853 } 4854 4855 /* 4856 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4857 */ 4858 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4859 struct imm_ntfy_from_isp *iocb) 4860 { 4861 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4862 struct qla_hw_data *ha = vha->hw; 4863 struct fc_port *sess = NULL, *conflict_sess = NULL; 4864 uint64_t wwn; 4865 port_id_t port_id; 4866 uint16_t loop_id; 4867 uint16_t wd3_lo; 4868 int res = 0; 4869 unsigned long flags; 4870 4871 lockdep_assert_held(&ha->hardware_lock); 4872 4873 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4874 4875 port_id.b.domain = iocb->u.isp24.port_id[2]; 4876 port_id.b.area = iocb->u.isp24.port_id[1]; 4877 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4878 port_id.b.rsvd_1 = 0; 4879 4880 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4881 4882 ql_dbg(ql_dbg_disc, vha, 0xf026, 4883 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4884 vha->vp_idx, iocb->u.isp24.port_id[2], 4885 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4886 iocb->u.isp24.status_subcode, loop_id, 4887 iocb->u.isp24.port_name); 4888 4889 /* res = 1 means ack at the end of thread 4890 * res = 0 means ack async/later. 4891 */ 4892 switch (iocb->u.isp24.status_subcode) { 4893 case ELS_PLOGI: 4894 res = qlt_handle_login(vha, iocb); 4895 break; 4896 4897 case ELS_PRLI: 4898 if (N2N_TOPO(ha)) { 4899 sess = qla2x00_find_fcport_by_wwpn(vha, 4900 iocb->u.isp24.port_name, 1); 4901 4902 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4903 ql_dbg(ql_dbg_disc, vha, 0xffff, 4904 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4905 __func__, __LINE__, 4906 iocb->u.isp24.port_name); 4907 qlt_send_term_imm_notif(vha, iocb, 1); 4908 break; 4909 } 4910 4911 res = qlt_handle_login(vha, iocb); 4912 break; 4913 } 4914 4915 if (IS_SW_RESV_ADDR(port_id)) { 4916 res = 1; 4917 break; 4918 } 4919 4920 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4921 4922 if (wwn) { 4923 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4924 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4925 loop_id, &conflict_sess); 4926 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4927 } 4928 4929 if (conflict_sess) { 4930 switch (conflict_sess->disc_state) { 4931 case DSC_DELETED: 4932 case DSC_DELETE_PEND: 4933 break; 4934 default: 4935 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4936 "PRLI with conflicting sess %p port %8phC\n", 4937 conflict_sess, conflict_sess->port_name); 4938 conflict_sess->fw_login_state = 4939 DSC_LS_PORT_UNAVAIL; 4940 qlt_send_term_imm_notif(vha, iocb, 1); 4941 res = 0; 4942 break; 4943 } 4944 } 4945 4946 if (sess != NULL) { 4947 bool delete = false; 4948 int sec; 4949 4950 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4951 switch (sess->fw_login_state) { 4952 case DSC_LS_PLOGI_PEND: 4953 case DSC_LS_PLOGI_COMP: 4954 case DSC_LS_PRLI_COMP: 4955 break; 4956 default: 4957 delete = true; 4958 break; 4959 } 4960 4961 switch (sess->disc_state) { 4962 case DSC_UPD_FCPORT: 4963 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4964 flags); 4965 4966 sec = jiffies_to_msecs(jiffies - 4967 sess->jiffies_at_registration)/1000; 4968 if (sess->sec_since_registration < sec && sec && 4969 !(sec % 5)) { 4970 sess->sec_since_registration = sec; 4971 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 4972 "%s %8phC : Slow Rport registration(%d Sec)\n", 4973 __func__, sess->port_name, sec); 4974 } 4975 qlt_send_term_imm_notif(vha, iocb, 1); 4976 return 0; 4977 4978 case DSC_LOGIN_PEND: 4979 case DSC_GPDB: 4980 case DSC_LOGIN_COMPLETE: 4981 case DSC_ADISC: 4982 delete = false; 4983 break; 4984 default: 4985 break; 4986 } 4987 4988 if (delete) { 4989 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4990 flags); 4991 /* 4992 * Impatient initiator sent PRLI before last 4993 * PLOGI could finish. Will force him to re-try, 4994 * while last one finishes. 4995 */ 4996 ql_log(ql_log_warn, sess->vha, 0xf095, 4997 "sess %p PRLI received, before plogi ack.\n", 4998 sess); 4999 qlt_send_term_imm_notif(vha, iocb, 1); 5000 res = 0; 5001 break; 5002 } 5003 5004 /* 5005 * This shouldn't happen under normal circumstances, 5006 * since we have deleted the old session during PLOGI 5007 */ 5008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5009 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5010 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5011 5012 sess->local = 0; 5013 sess->loop_id = loop_id; 5014 sess->d_id = port_id; 5015 sess->fw_login_state = DSC_LS_PRLI_PEND; 5016 5017 if (wd3_lo & BIT_7) 5018 sess->conf_compl_supported = 1; 5019 5020 if ((wd3_lo & BIT_4) == 0) 5021 sess->port_type = FCT_INITIATOR; 5022 else 5023 sess->port_type = FCT_TARGET; 5024 5025 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5026 } 5027 res = 1; /* send notify ack */ 5028 5029 /* Make session global (not used in fabric mode) */ 5030 if (ha->current_topology != ISP_CFG_F) { 5031 if (sess) { 5032 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5033 "%s %d %8phC post nack\n", 5034 __func__, __LINE__, sess->port_name); 5035 qla24xx_post_nack_work(vha, sess, iocb, 5036 SRB_NACK_PRLI); 5037 res = 0; 5038 } else { 5039 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5040 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5041 qla2xxx_wake_dpc(vha); 5042 } 5043 } else { 5044 if (sess) { 5045 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5046 "%s %d %8phC post nack\n", 5047 __func__, __LINE__, sess->port_name); 5048 qla24xx_post_nack_work(vha, sess, iocb, 5049 SRB_NACK_PRLI); 5050 res = 0; 5051 } 5052 } 5053 break; 5054 5055 case ELS_TPRLO: 5056 if (le16_to_cpu(iocb->u.isp24.flags) & 5057 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5058 loop_id = 0xFFFF; 5059 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5060 res = 1; 5061 break; 5062 } 5063 fallthrough; 5064 case ELS_LOGO: 5065 case ELS_PRLO: 5066 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5067 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5068 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5069 5070 if (sess) { 5071 sess->login_gen++; 5072 sess->fw_login_state = DSC_LS_LOGO_PEND; 5073 sess->logo_ack_needed = 1; 5074 memcpy(sess->iocb, iocb, IOCB_SIZE); 5075 } 5076 5077 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5078 5079 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5080 "%s: logo %llx res %d sess %p ", 5081 __func__, wwn, res, sess); 5082 if (res == 0) { 5083 /* 5084 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5085 * for LOGO_ACK & sess delete 5086 */ 5087 BUG_ON(!sess); 5088 res = 0; 5089 } else { 5090 /* cmd did not go to upper layer. */ 5091 if (sess) { 5092 qlt_schedule_sess_for_deletion(sess); 5093 res = 0; 5094 } 5095 /* else logo will be ack */ 5096 } 5097 break; 5098 case ELS_PDISC: 5099 case ELS_ADISC: 5100 { 5101 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5102 5103 if (tgt->link_reinit_iocb_pending) { 5104 qlt_send_notify_ack(ha->base_qpair, 5105 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5106 tgt->link_reinit_iocb_pending = 0; 5107 } 5108 5109 sess = qla2x00_find_fcport_by_wwpn(vha, 5110 iocb->u.isp24.port_name, 1); 5111 if (sess) { 5112 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5113 "sess %p lid %d|%d DS %d LS %d\n", 5114 sess, sess->loop_id, loop_id, 5115 sess->disc_state, sess->fw_login_state); 5116 } 5117 5118 res = 1; /* send notify ack */ 5119 break; 5120 } 5121 5122 case ELS_FLOGI: /* should never happen */ 5123 default: 5124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5125 "qla_target(%d): Unsupported ELS command %x " 5126 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5127 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5128 break; 5129 } 5130 5131 ql_dbg(ql_dbg_disc, vha, 0xf026, 5132 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5133 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5134 5135 return res; 5136 } 5137 5138 /* 5139 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5140 */ 5141 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5142 struct imm_ntfy_from_isp *iocb) 5143 { 5144 struct qla_hw_data *ha = vha->hw; 5145 uint32_t add_flags = 0; 5146 int send_notify_ack = 1; 5147 uint16_t status; 5148 5149 lockdep_assert_held(&ha->hardware_lock); 5150 5151 status = le16_to_cpu(iocb->u.isp2x.status); 5152 switch (status) { 5153 case IMM_NTFY_LIP_RESET: 5154 { 5155 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5156 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5157 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5158 iocb->u.isp24.status_subcode); 5159 5160 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5161 send_notify_ack = 0; 5162 break; 5163 } 5164 5165 case IMM_NTFY_LIP_LINK_REINIT: 5166 { 5167 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5168 5169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5170 "qla_target(%d): LINK REINIT (loop %#x, " 5171 "subcode %x)\n", vha->vp_idx, 5172 le16_to_cpu(iocb->u.isp24.nport_handle), 5173 iocb->u.isp24.status_subcode); 5174 if (tgt->link_reinit_iocb_pending) { 5175 qlt_send_notify_ack(ha->base_qpair, 5176 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5177 } 5178 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5179 tgt->link_reinit_iocb_pending = 1; 5180 /* 5181 * QLogic requires to wait after LINK REINIT for possible 5182 * PDISC or ADISC ELS commands 5183 */ 5184 send_notify_ack = 0; 5185 break; 5186 } 5187 5188 case IMM_NTFY_PORT_LOGOUT: 5189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5190 "qla_target(%d): Port logout (loop " 5191 "%#x, subcode %x)\n", vha->vp_idx, 5192 le16_to_cpu(iocb->u.isp24.nport_handle), 5193 iocb->u.isp24.status_subcode); 5194 5195 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5196 send_notify_ack = 0; 5197 /* The sessions will be cleared in the callback, if needed */ 5198 break; 5199 5200 case IMM_NTFY_GLBL_TPRLO: 5201 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5202 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5203 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5204 send_notify_ack = 0; 5205 /* The sessions will be cleared in the callback, if needed */ 5206 break; 5207 5208 case IMM_NTFY_PORT_CONFIG: 5209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5210 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5211 status); 5212 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5213 send_notify_ack = 0; 5214 /* The sessions will be cleared in the callback, if needed */ 5215 break; 5216 5217 case IMM_NTFY_GLBL_LOGO: 5218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5219 "qla_target(%d): Link failure detected\n", 5220 vha->vp_idx); 5221 /* I_T nexus loss */ 5222 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5223 send_notify_ack = 0; 5224 break; 5225 5226 case IMM_NTFY_IOCB_OVERFLOW: 5227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5228 "qla_target(%d): Cannot provide requested " 5229 "capability (IOCB overflowed the immediate notify " 5230 "resource count)\n", vha->vp_idx); 5231 break; 5232 5233 case IMM_NTFY_ABORT_TASK: 5234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5235 "qla_target(%d): Abort Task (S %08x I %#x -> " 5236 "L %#x)\n", vha->vp_idx, 5237 le16_to_cpu(iocb->u.isp2x.seq_id), 5238 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5239 le16_to_cpu(iocb->u.isp2x.lun)); 5240 if (qlt_abort_task(vha, iocb) == 0) 5241 send_notify_ack = 0; 5242 break; 5243 5244 case IMM_NTFY_RESOURCE: 5245 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5246 "qla_target(%d): Out of resources, host %ld\n", 5247 vha->vp_idx, vha->host_no); 5248 break; 5249 5250 case IMM_NTFY_MSG_RX: 5251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5252 "qla_target(%d): Immediate notify task %x\n", 5253 vha->vp_idx, iocb->u.isp2x.task_flags); 5254 break; 5255 5256 case IMM_NTFY_ELS: 5257 if (qlt_24xx_handle_els(vha, iocb) == 0) 5258 send_notify_ack = 0; 5259 break; 5260 default: 5261 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5262 "qla_target(%d): Received unknown immediate " 5263 "notify status %x\n", vha->vp_idx, status); 5264 break; 5265 } 5266 5267 if (send_notify_ack) 5268 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5269 0, 0); 5270 } 5271 5272 /* 5273 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5274 * This function sends busy to ISP 2xxx or 24xx. 5275 */ 5276 static int __qlt_send_busy(struct qla_qpair *qpair, 5277 struct atio_from_isp *atio, uint16_t status) 5278 { 5279 struct scsi_qla_host *vha = qpair->vha; 5280 struct ctio7_to_24xx *ctio24; 5281 struct qla_hw_data *ha = vha->hw; 5282 request_t *pkt; 5283 struct fc_port *sess = NULL; 5284 unsigned long flags; 5285 u16 temp; 5286 port_id_t id; 5287 5288 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5289 5290 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5291 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5292 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5293 if (!sess) { 5294 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5295 return 0; 5296 } 5297 /* Sending marker isn't necessary, since we called from ISR */ 5298 5299 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5300 if (!pkt) { 5301 ql_dbg(ql_dbg_io, vha, 0x3063, 5302 "qla_target(%d): %s failed: unable to allocate " 5303 "request packet", vha->vp_idx, __func__); 5304 return -ENOMEM; 5305 } 5306 5307 qpair->tgt_counters.num_q_full_sent++; 5308 pkt->entry_count = 1; 5309 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5310 5311 ctio24 = (struct ctio7_to_24xx *)pkt; 5312 ctio24->entry_type = CTIO_TYPE7; 5313 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5314 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5315 ctio24->vp_index = vha->vp_idx; 5316 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5317 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5318 temp = (atio->u.isp24.attr << 9) | 5319 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5320 CTIO7_FLAGS_DONT_RET_CTIO; 5321 ctio24->u.status1.flags = cpu_to_le16(temp); 5322 /* 5323 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5324 * if the explicit conformation is used. 5325 */ 5326 ctio24->u.status1.ox_id = 5327 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5328 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5329 5330 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5331 5332 if (ctio24->u.status1.residual != 0) 5333 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5334 5335 /* Memory Barrier */ 5336 wmb(); 5337 if (qpair->reqq_start_iocbs) 5338 qpair->reqq_start_iocbs(qpair); 5339 else 5340 qla2x00_start_iocbs(vha, qpair->req); 5341 return 0; 5342 } 5343 5344 /* 5345 * This routine is used to allocate a command for either a QFull condition 5346 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5347 * out previously. 5348 */ 5349 static void 5350 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5351 struct atio_from_isp *atio, uint16_t status, int qfull) 5352 { 5353 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5354 struct qla_hw_data *ha = vha->hw; 5355 struct fc_port *sess; 5356 struct qla_tgt_cmd *cmd; 5357 unsigned long flags; 5358 5359 if (unlikely(tgt->tgt_stop)) { 5360 ql_dbg(ql_dbg_io, vha, 0x300a, 5361 "New command while device %p is shutting down\n", tgt); 5362 return; 5363 } 5364 5365 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5366 vha->hw->tgt.num_qfull_cmds_dropped++; 5367 if (vha->hw->tgt.num_qfull_cmds_dropped > 5368 vha->qla_stats.stat_max_qfull_cmds_dropped) 5369 vha->qla_stats.stat_max_qfull_cmds_dropped = 5370 vha->hw->tgt.num_qfull_cmds_dropped; 5371 5372 ql_dbg(ql_dbg_io, vha, 0x3068, 5373 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5374 vha->vp_idx, __func__, 5375 vha->hw->tgt.num_qfull_cmds_dropped); 5376 5377 qlt_chk_exch_leak_thresh_hold(vha); 5378 return; 5379 } 5380 5381 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5382 (vha, atio->u.isp24.fcp_hdr.s_id); 5383 if (!sess) 5384 return; 5385 5386 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5387 if (!cmd) { 5388 ql_dbg(ql_dbg_io, vha, 0x3009, 5389 "qla_target(%d): %s: Allocation of cmd failed\n", 5390 vha->vp_idx, __func__); 5391 5392 vha->hw->tgt.num_qfull_cmds_dropped++; 5393 if (vha->hw->tgt.num_qfull_cmds_dropped > 5394 vha->qla_stats.stat_max_qfull_cmds_dropped) 5395 vha->qla_stats.stat_max_qfull_cmds_dropped = 5396 vha->hw->tgt.num_qfull_cmds_dropped; 5397 5398 qlt_chk_exch_leak_thresh_hold(vha); 5399 return; 5400 } 5401 5402 qlt_incr_num_pend_cmds(vha); 5403 INIT_LIST_HEAD(&cmd->cmd_list); 5404 memcpy(&cmd->atio, atio, sizeof(*atio)); 5405 5406 cmd->tgt = vha->vha_tgt.qla_tgt; 5407 cmd->vha = vha; 5408 cmd->reset_count = ha->base_qpair->chip_reset; 5409 cmd->q_full = 1; 5410 cmd->qpair = ha->base_qpair; 5411 5412 if (qfull) { 5413 cmd->q_full = 1; 5414 /* NOTE: borrowing the state field to carry the status */ 5415 cmd->state = status; 5416 } else 5417 cmd->term_exchg = 1; 5418 5419 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5420 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5421 5422 vha->hw->tgt.num_qfull_cmds_alloc++; 5423 if (vha->hw->tgt.num_qfull_cmds_alloc > 5424 vha->qla_stats.stat_max_qfull_cmds_alloc) 5425 vha->qla_stats.stat_max_qfull_cmds_alloc = 5426 vha->hw->tgt.num_qfull_cmds_alloc; 5427 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5428 } 5429 5430 int 5431 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5432 { 5433 struct scsi_qla_host *vha = qpair->vha; 5434 struct qla_hw_data *ha = vha->hw; 5435 unsigned long flags; 5436 struct qla_tgt_cmd *cmd, *tcmd; 5437 struct list_head free_list, q_full_list; 5438 int rc = 0; 5439 5440 if (list_empty(&ha->tgt.q_full_list)) 5441 return 0; 5442 5443 INIT_LIST_HEAD(&free_list); 5444 INIT_LIST_HEAD(&q_full_list); 5445 5446 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5447 if (list_empty(&ha->tgt.q_full_list)) { 5448 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5449 return 0; 5450 } 5451 5452 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5453 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5454 5455 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5456 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5457 if (cmd->q_full) 5458 /* cmd->state is a borrowed field to hold status */ 5459 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5460 else if (cmd->term_exchg) 5461 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5462 5463 if (rc == -ENOMEM) 5464 break; 5465 5466 if (cmd->q_full) 5467 ql_dbg(ql_dbg_io, vha, 0x3006, 5468 "%s: busy sent for ox_id[%04x]\n", __func__, 5469 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5470 else if (cmd->term_exchg) 5471 ql_dbg(ql_dbg_io, vha, 0x3007, 5472 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5473 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5474 else 5475 ql_dbg(ql_dbg_io, vha, 0x3008, 5476 "%s: Unexpected cmd in QFull list %p\n", __func__, 5477 cmd); 5478 5479 list_del(&cmd->cmd_list); 5480 list_add_tail(&cmd->cmd_list, &free_list); 5481 5482 /* piggy back on hardware_lock for protection */ 5483 vha->hw->tgt.num_qfull_cmds_alloc--; 5484 } 5485 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5486 5487 cmd = NULL; 5488 5489 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5490 list_del(&cmd->cmd_list); 5491 /* This cmd was never sent to TCM. There is no need 5492 * to schedule free or call free_cmd 5493 */ 5494 qlt_free_cmd(cmd); 5495 } 5496 5497 if (!list_empty(&q_full_list)) { 5498 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5499 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5500 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5501 } 5502 5503 return rc; 5504 } 5505 5506 static void 5507 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5508 uint16_t status) 5509 { 5510 int rc = 0; 5511 struct scsi_qla_host *vha = qpair->vha; 5512 5513 rc = __qlt_send_busy(qpair, atio, status); 5514 if (rc == -ENOMEM) 5515 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5516 } 5517 5518 static int 5519 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5520 struct atio_from_isp *atio, uint8_t ha_locked) 5521 { 5522 struct qla_hw_data *ha = vha->hw; 5523 unsigned long flags; 5524 5525 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5526 return 0; 5527 5528 if (!ha_locked) 5529 spin_lock_irqsave(&ha->hardware_lock, flags); 5530 qlt_send_busy(qpair, atio, qla_sam_status); 5531 if (!ha_locked) 5532 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5533 5534 return 1; 5535 } 5536 5537 /* ha->hardware_lock supposed to be held on entry */ 5538 /* called via callback from qla2xxx */ 5539 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5540 struct atio_from_isp *atio, uint8_t ha_locked) 5541 { 5542 struct qla_hw_data *ha = vha->hw; 5543 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5544 int rc; 5545 unsigned long flags = 0; 5546 5547 if (unlikely(tgt == NULL)) { 5548 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5549 "ATIO pkt, but no tgt (ha %p)", ha); 5550 return; 5551 } 5552 /* 5553 * In tgt_stop mode we also should allow all requests to pass. 5554 * Otherwise, some commands can stuck. 5555 */ 5556 5557 tgt->atio_irq_cmd_count++; 5558 5559 switch (atio->u.raw.entry_type) { 5560 case ATIO_TYPE7: 5561 if (unlikely(atio->u.isp24.exchange_addr == 5562 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5563 ql_dbg(ql_dbg_io, vha, 0x3065, 5564 "qla_target(%d): ATIO_TYPE7 " 5565 "received with UNKNOWN exchange address, " 5566 "sending QUEUE_FULL\n", vha->vp_idx); 5567 if (!ha_locked) 5568 spin_lock_irqsave(&ha->hardware_lock, flags); 5569 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5570 if (!ha_locked) 5571 spin_unlock_irqrestore(&ha->hardware_lock, 5572 flags); 5573 break; 5574 } 5575 5576 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5577 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5578 atio, ha_locked); 5579 if (rc != 0) { 5580 tgt->atio_irq_cmd_count--; 5581 return; 5582 } 5583 rc = qlt_handle_cmd_for_atio(vha, atio); 5584 } else { 5585 rc = qlt_handle_task_mgmt(vha, atio); 5586 } 5587 if (unlikely(rc != 0)) { 5588 if (!ha_locked) 5589 spin_lock_irqsave(&ha->hardware_lock, flags); 5590 switch (rc) { 5591 case -ENODEV: 5592 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5593 "qla_target: Unable to send command to target\n"); 5594 break; 5595 case -EBADF: 5596 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5597 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5598 qlt_send_term_exchange(ha->base_qpair, NULL, 5599 atio, 1, 0); 5600 break; 5601 case -EBUSY: 5602 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5603 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5604 vha->vp_idx); 5605 qlt_send_busy(ha->base_qpair, atio, 5606 tc_sam_status); 5607 break; 5608 default: 5609 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5610 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5611 vha->vp_idx); 5612 qlt_send_busy(ha->base_qpair, atio, 5613 qla_sam_status); 5614 break; 5615 } 5616 if (!ha_locked) 5617 spin_unlock_irqrestore(&ha->hardware_lock, 5618 flags); 5619 } 5620 break; 5621 5622 case IMMED_NOTIFY_TYPE: 5623 { 5624 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5625 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5626 "qla_target(%d): Received ATIO packet %x " 5627 "with error status %x\n", vha->vp_idx, 5628 atio->u.raw.entry_type, 5629 atio->u.isp2x.entry_status); 5630 break; 5631 } 5632 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5633 5634 if (!ha_locked) 5635 spin_lock_irqsave(&ha->hardware_lock, flags); 5636 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5637 if (!ha_locked) 5638 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5639 break; 5640 } 5641 5642 default: 5643 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5644 "qla_target(%d): Received unknown ATIO atio " 5645 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5646 break; 5647 } 5648 5649 tgt->atio_irq_cmd_count--; 5650 } 5651 5652 /* 5653 * qpair lock is assume to be held 5654 * rc = 0 : send terminate & abts respond 5655 * rc != 0: do not send term & abts respond 5656 */ 5657 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5658 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5659 { 5660 struct qla_hw_data *ha = vha->hw; 5661 int rc = 0; 5662 5663 /* 5664 * Detect unresolved exchange. If the same ABTS is unable 5665 * to terminate an existing command and the same ABTS loops 5666 * between FW & Driver, then force FW dump. Under 1 jiff, 5667 * we should see multiple loops. 5668 */ 5669 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5670 qpair->retry_term_jiff == jiffies) { 5671 /* found existing exchange */ 5672 qpair->retry_term_cnt++; 5673 if (qpair->retry_term_cnt >= 5) { 5674 rc = -EIO; 5675 qpair->retry_term_cnt = 0; 5676 ql_log(ql_log_warn, vha, 0xffff, 5677 "Unable to send ABTS Respond. Dumping firmware.\n"); 5678 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5679 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5680 5681 if (qpair == ha->base_qpair) 5682 ha->isp_ops->fw_dump(vha); 5683 else 5684 qla2xxx_dump_fw(vha); 5685 5686 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5687 qla2xxx_wake_dpc(vha); 5688 } 5689 } else if (qpair->retry_term_jiff != jiffies) { 5690 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5691 qpair->retry_term_cnt = 0; 5692 qpair->retry_term_jiff = jiffies; 5693 } 5694 5695 return rc; 5696 } 5697 5698 5699 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5700 struct rsp_que *rsp, response_t *pkt) 5701 { 5702 struct abts_resp_from_24xx_fw *entry = 5703 (struct abts_resp_from_24xx_fw *)pkt; 5704 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5705 struct qla_tgt_mgmt_cmd *mcmd; 5706 struct qla_hw_data *ha = vha->hw; 5707 5708 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5709 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5710 ql_dbg(ql_dbg_async, vha, 0xe064, 5711 "qla_target(%d): ABTS Comp without mcmd\n", 5712 vha->vp_idx); 5713 return; 5714 } 5715 5716 if (mcmd) 5717 vha = mcmd->vha; 5718 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5719 5720 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5721 "ABTS_RESP_24XX: compl_status %x\n", 5722 entry->compl_status); 5723 5724 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5725 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5726 le32_to_cpu(entry->error_subcode2) == 0) { 5727 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5728 ha->tgt.tgt_ops->free_mcmd(mcmd); 5729 return; 5730 } 5731 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5732 pkt, mcmd); 5733 } else { 5734 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5735 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5736 vha->vp_idx, entry->compl_status, 5737 entry->error_subcode1, 5738 entry->error_subcode2); 5739 ha->tgt.tgt_ops->free_mcmd(mcmd); 5740 } 5741 } else if (mcmd) { 5742 ha->tgt.tgt_ops->free_mcmd(mcmd); 5743 } 5744 } 5745 5746 /* ha->hardware_lock supposed to be held on entry */ 5747 /* called via callback from qla2xxx */ 5748 static void qlt_response_pkt(struct scsi_qla_host *vha, 5749 struct rsp_que *rsp, response_t *pkt) 5750 { 5751 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5752 5753 if (unlikely(tgt == NULL)) { 5754 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5755 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5756 vha->vp_idx, pkt->entry_type, vha->hw); 5757 return; 5758 } 5759 5760 /* 5761 * In tgt_stop mode we also should allow all requests to pass. 5762 * Otherwise, some commands can stuck. 5763 */ 5764 5765 switch (pkt->entry_type) { 5766 case CTIO_CRC2: 5767 case CTIO_TYPE7: 5768 { 5769 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5770 5771 qlt_do_ctio_completion(vha, rsp, entry->handle, 5772 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5773 entry); 5774 break; 5775 } 5776 5777 case ACCEPT_TGT_IO_TYPE: 5778 { 5779 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5780 int rc; 5781 5782 if (atio->u.isp2x.status != 5783 cpu_to_le16(ATIO_CDB_VALID)) { 5784 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5785 "qla_target(%d): ATIO with error " 5786 "status %x received\n", vha->vp_idx, 5787 le16_to_cpu(atio->u.isp2x.status)); 5788 break; 5789 } 5790 5791 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5792 if (rc != 0) 5793 return; 5794 5795 rc = qlt_handle_cmd_for_atio(vha, atio); 5796 if (unlikely(rc != 0)) { 5797 switch (rc) { 5798 case -ENODEV: 5799 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5800 "qla_target: Unable to send command to target\n"); 5801 break; 5802 case -EBADF: 5803 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5804 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5805 qlt_send_term_exchange(rsp->qpair, NULL, 5806 atio, 1, 0); 5807 break; 5808 case -EBUSY: 5809 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5810 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5811 vha->vp_idx); 5812 qlt_send_busy(rsp->qpair, atio, 5813 tc_sam_status); 5814 break; 5815 default: 5816 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5817 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5818 vha->vp_idx); 5819 qlt_send_busy(rsp->qpair, atio, 5820 qla_sam_status); 5821 break; 5822 } 5823 } 5824 } 5825 break; 5826 5827 case CONTINUE_TGT_IO_TYPE: 5828 { 5829 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5830 5831 qlt_do_ctio_completion(vha, rsp, entry->handle, 5832 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5833 entry); 5834 break; 5835 } 5836 5837 case CTIO_A64_TYPE: 5838 { 5839 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5840 5841 qlt_do_ctio_completion(vha, rsp, entry->handle, 5842 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5843 entry); 5844 break; 5845 } 5846 5847 case IMMED_NOTIFY_TYPE: 5848 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5849 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5850 break; 5851 5852 case NOTIFY_ACK_TYPE: 5853 if (tgt->notify_ack_expected > 0) { 5854 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5855 5856 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5857 "NOTIFY_ACK seq %08x status %x\n", 5858 le16_to_cpu(entry->u.isp2x.seq_id), 5859 le16_to_cpu(entry->u.isp2x.status)); 5860 tgt->notify_ack_expected--; 5861 if (entry->u.isp2x.status != 5862 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5863 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5864 "qla_target(%d): NOTIFY_ACK " 5865 "failed %x\n", vha->vp_idx, 5866 le16_to_cpu(entry->u.isp2x.status)); 5867 } 5868 } else { 5869 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5870 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5871 vha->vp_idx); 5872 } 5873 break; 5874 5875 case ABTS_RECV_24XX: 5876 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5877 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5878 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5879 break; 5880 5881 case ABTS_RESP_24XX: 5882 if (tgt->abts_resp_expected > 0) { 5883 qlt_handle_abts_completion(vha, rsp, pkt); 5884 } else { 5885 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5886 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5887 "received\n", vha->vp_idx); 5888 } 5889 break; 5890 5891 default: 5892 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5893 "qla_target(%d): Received unknown response pkt " 5894 "type %x\n", vha->vp_idx, pkt->entry_type); 5895 break; 5896 } 5897 5898 } 5899 5900 /* 5901 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5902 */ 5903 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5904 uint16_t *mailbox) 5905 { 5906 struct qla_hw_data *ha = vha->hw; 5907 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5908 int login_code; 5909 5910 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5911 return; 5912 5913 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5914 IS_QLA2100(ha)) 5915 return; 5916 /* 5917 * In tgt_stop mode we also should allow all requests to pass. 5918 * Otherwise, some commands can stuck. 5919 */ 5920 5921 5922 switch (code) { 5923 case MBA_RESET: /* Reset */ 5924 case MBA_SYSTEM_ERR: /* System Error */ 5925 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5926 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5927 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5928 "qla_target(%d): System error async event %#x " 5929 "occurred", vha->vp_idx, code); 5930 break; 5931 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5932 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5933 break; 5934 5935 case MBA_LOOP_UP: 5936 { 5937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5938 "qla_target(%d): Async LOOP_UP occurred " 5939 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5940 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5941 if (tgt->link_reinit_iocb_pending) { 5942 qlt_send_notify_ack(ha->base_qpair, 5943 &tgt->link_reinit_iocb, 5944 0, 0, 0, 0, 0, 0); 5945 tgt->link_reinit_iocb_pending = 0; 5946 } 5947 break; 5948 } 5949 5950 case MBA_LIP_OCCURRED: 5951 case MBA_LOOP_DOWN: 5952 case MBA_LIP_RESET: 5953 case MBA_RSCN_UPDATE: 5954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5955 "qla_target(%d): Async event %#x occurred " 5956 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5957 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5958 break; 5959 5960 case MBA_REJECTED_FCP_CMD: 5961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5962 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5963 vha->vp_idx, 5964 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5965 5966 if (mailbox[3] == 1) { 5967 /* exchange starvation. */ 5968 vha->hw->exch_starvation++; 5969 if (vha->hw->exch_starvation > 5) { 5970 ql_log(ql_log_warn, vha, 0xd03a, 5971 "Exchange starvation-. Resetting RISC\n"); 5972 5973 vha->hw->exch_starvation = 0; 5974 if (IS_P3P_TYPE(vha->hw)) 5975 set_bit(FCOE_CTX_RESET_NEEDED, 5976 &vha->dpc_flags); 5977 else 5978 set_bit(ISP_ABORT_NEEDED, 5979 &vha->dpc_flags); 5980 qla2xxx_wake_dpc(vha); 5981 } 5982 } 5983 break; 5984 5985 case MBA_PORT_UPDATE: 5986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5987 "qla_target(%d): Port update async event %#x " 5988 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5989 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5990 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5991 5992 login_code = mailbox[2]; 5993 if (login_code == 0x4) { 5994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5995 "Async MB 2: Got PLOGI Complete\n"); 5996 vha->hw->exch_starvation = 0; 5997 } else if (login_code == 0x7) 5998 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5999 "Async MB 2: Port Logged Out\n"); 6000 break; 6001 default: 6002 break; 6003 } 6004 6005 } 6006 6007 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6008 uint16_t loop_id) 6009 { 6010 fc_port_t *fcport, *tfcp, *del; 6011 int rc; 6012 unsigned long flags; 6013 u8 newfcport = 0; 6014 6015 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6016 if (!fcport) { 6017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6018 "qla_target(%d): Allocation of tmp FC port failed", 6019 vha->vp_idx); 6020 return NULL; 6021 } 6022 6023 fcport->loop_id = loop_id; 6024 6025 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6026 if (rc != QLA_SUCCESS) { 6027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6028 "qla_target(%d): Failed to retrieve fcport " 6029 "information -- get_port_database() returned %x " 6030 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6031 kfree(fcport); 6032 return NULL; 6033 } 6034 6035 del = NULL; 6036 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6037 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6038 6039 if (tfcp) { 6040 tfcp->d_id = fcport->d_id; 6041 tfcp->port_type = fcport->port_type; 6042 tfcp->supported_classes = fcport->supported_classes; 6043 tfcp->flags |= fcport->flags; 6044 tfcp->scan_state = QLA_FCPORT_FOUND; 6045 6046 del = fcport; 6047 fcport = tfcp; 6048 } else { 6049 if (vha->hw->current_topology == ISP_CFG_F) 6050 fcport->flags |= FCF_FABRIC_DEVICE; 6051 6052 list_add_tail(&fcport->list, &vha->vp_fcports); 6053 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6054 vha->fcport_count++; 6055 fcport->login_gen++; 6056 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6057 fcport->login_succ = 1; 6058 newfcport = 1; 6059 } 6060 6061 fcport->deleted = 0; 6062 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6063 6064 switch (vha->host->active_mode) { 6065 case MODE_INITIATOR: 6066 case MODE_DUAL: 6067 if (newfcport) { 6068 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6069 qla24xx_sched_upd_fcport(fcport); 6070 } else { 6071 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6072 "%s %d %8phC post gpsc fcp_cnt %d\n", 6073 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6074 qla24xx_post_gpsc_work(vha, fcport); 6075 } 6076 } 6077 break; 6078 6079 case MODE_TARGET: 6080 default: 6081 break; 6082 } 6083 if (del) 6084 qla2x00_free_fcport(del); 6085 6086 return fcport; 6087 } 6088 6089 /* Must be called under tgt_mutex */ 6090 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6091 be_id_t s_id) 6092 { 6093 struct fc_port *sess = NULL; 6094 fc_port_t *fcport = NULL; 6095 int rc, global_resets; 6096 uint16_t loop_id = 0; 6097 6098 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6099 /* 6100 * This is Domain Controller, so it should be 6101 * OK to drop SCSI commands from it. 6102 */ 6103 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6104 "Unable to find initiator with S_ID %x:%x:%x", 6105 s_id.domain, s_id.area, s_id.al_pa); 6106 return NULL; 6107 } 6108 6109 mutex_lock(&vha->vha_tgt.tgt_mutex); 6110 6111 retry: 6112 global_resets = 6113 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6114 6115 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6116 if (rc != 0) { 6117 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6118 6119 ql_log(ql_log_info, vha, 0xf071, 6120 "qla_target(%d): Unable to find " 6121 "initiator with S_ID %x:%x:%x", 6122 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6123 6124 if (rc == -ENOENT) { 6125 qlt_port_logo_t logo; 6126 6127 logo.id = be_to_port_id(s_id); 6128 logo.cmd_count = 1; 6129 qlt_send_first_logo(vha, &logo); 6130 } 6131 6132 return NULL; 6133 } 6134 6135 fcport = qlt_get_port_database(vha, loop_id); 6136 if (!fcport) { 6137 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6138 return NULL; 6139 } 6140 6141 if (global_resets != 6142 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6144 "qla_target(%d): global reset during session discovery " 6145 "(counter was %d, new %d), retrying", vha->vp_idx, 6146 global_resets, 6147 atomic_read(&vha->vha_tgt. 6148 qla_tgt->tgt_global_resets_count)); 6149 goto retry; 6150 } 6151 6152 sess = qlt_create_sess(vha, fcport, true); 6153 6154 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6155 6156 return sess; 6157 } 6158 6159 static void qlt_abort_work(struct qla_tgt *tgt, 6160 struct qla_tgt_sess_work_param *prm) 6161 { 6162 struct scsi_qla_host *vha = tgt->vha; 6163 struct qla_hw_data *ha = vha->hw; 6164 struct fc_port *sess = NULL; 6165 unsigned long flags = 0, flags2 = 0; 6166 be_id_t s_id; 6167 int rc; 6168 6169 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6170 6171 if (tgt->tgt_stop) 6172 goto out_term2; 6173 6174 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6175 6176 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6177 if (!sess) { 6178 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6179 6180 sess = qlt_make_local_sess(vha, s_id); 6181 /* sess has got an extra creation ref */ 6182 6183 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6184 if (!sess) 6185 goto out_term2; 6186 } else { 6187 if (sess->deleted) { 6188 sess = NULL; 6189 goto out_term2; 6190 } 6191 6192 if (!kref_get_unless_zero(&sess->sess_kref)) { 6193 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6194 "%s: kref_get fail %8phC \n", 6195 __func__, sess->port_name); 6196 sess = NULL; 6197 goto out_term2; 6198 } 6199 } 6200 6201 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6202 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6203 6204 ha->tgt.tgt_ops->put_sess(sess); 6205 6206 if (rc != 0) 6207 goto out_term; 6208 return; 6209 6210 out_term2: 6211 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6212 6213 out_term: 6214 spin_lock_irqsave(&ha->hardware_lock, flags); 6215 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6216 FCP_TMF_REJECTED, false); 6217 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6218 } 6219 6220 static void qlt_tmr_work(struct qla_tgt *tgt, 6221 struct qla_tgt_sess_work_param *prm) 6222 { 6223 struct atio_from_isp *a = &prm->tm_iocb2; 6224 struct scsi_qla_host *vha = tgt->vha; 6225 struct qla_hw_data *ha = vha->hw; 6226 struct fc_port *sess; 6227 unsigned long flags; 6228 be_id_t s_id; 6229 int rc; 6230 u64 unpacked_lun; 6231 int fn; 6232 void *iocb; 6233 6234 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6235 6236 if (tgt->tgt_stop) 6237 goto out_term2; 6238 6239 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6240 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6241 if (!sess) { 6242 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6243 6244 sess = qlt_make_local_sess(vha, s_id); 6245 /* sess has got an extra creation ref */ 6246 6247 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6248 if (!sess) 6249 goto out_term2; 6250 } else { 6251 if (sess->deleted) { 6252 goto out_term2; 6253 } 6254 6255 if (!kref_get_unless_zero(&sess->sess_kref)) { 6256 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6257 "%s: kref_get fail %8phC\n", 6258 __func__, sess->port_name); 6259 goto out_term2; 6260 } 6261 } 6262 6263 iocb = a; 6264 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6265 unpacked_lun = 6266 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6267 6268 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6269 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6270 6271 ha->tgt.tgt_ops->put_sess(sess); 6272 6273 if (rc != 0) 6274 goto out_term; 6275 return; 6276 6277 out_term2: 6278 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6279 out_term: 6280 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6281 } 6282 6283 static void qlt_sess_work_fn(struct work_struct *work) 6284 { 6285 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6286 struct scsi_qla_host *vha = tgt->vha; 6287 unsigned long flags; 6288 6289 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6290 6291 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6292 while (!list_empty(&tgt->sess_works_list)) { 6293 struct qla_tgt_sess_work_param *prm = list_entry( 6294 tgt->sess_works_list.next, typeof(*prm), 6295 sess_works_list_entry); 6296 6297 /* 6298 * This work can be scheduled on several CPUs at time, so we 6299 * must delete the entry to eliminate double processing 6300 */ 6301 list_del(&prm->sess_works_list_entry); 6302 6303 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6304 6305 switch (prm->type) { 6306 case QLA_TGT_SESS_WORK_ABORT: 6307 qlt_abort_work(tgt, prm); 6308 break; 6309 case QLA_TGT_SESS_WORK_TM: 6310 qlt_tmr_work(tgt, prm); 6311 break; 6312 default: 6313 BUG_ON(1); 6314 break; 6315 } 6316 6317 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6318 6319 kfree(prm); 6320 } 6321 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6322 } 6323 6324 /* Must be called under tgt_host_action_mutex */ 6325 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6326 { 6327 struct qla_tgt *tgt; 6328 int rc, i; 6329 struct qla_qpair_hint *h; 6330 6331 if (!QLA_TGT_MODE_ENABLED()) 6332 return 0; 6333 6334 if (!IS_TGT_MODE_CAPABLE(ha)) { 6335 ql_log(ql_log_warn, base_vha, 0xe070, 6336 "This adapter does not support target mode.\n"); 6337 return 0; 6338 } 6339 6340 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6341 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6342 6343 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6344 6345 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6346 if (!tgt) { 6347 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6348 "Unable to allocate struct qla_tgt\n"); 6349 return -ENOMEM; 6350 } 6351 6352 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6353 sizeof(struct qla_qpair_hint), 6354 GFP_KERNEL); 6355 if (!tgt->qphints) { 6356 kfree(tgt); 6357 ql_log(ql_log_warn, base_vha, 0x0197, 6358 "Unable to allocate qpair hints.\n"); 6359 return -ENOMEM; 6360 } 6361 6362 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6363 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6364 6365 rc = btree_init64(&tgt->lun_qpair_map); 6366 if (rc) { 6367 kfree(tgt->qphints); 6368 kfree(tgt); 6369 ql_log(ql_log_info, base_vha, 0x0198, 6370 "Unable to initialize lun_qpair_map btree\n"); 6371 return -EIO; 6372 } 6373 h = &tgt->qphints[0]; 6374 h->qpair = ha->base_qpair; 6375 INIT_LIST_HEAD(&h->hint_elem); 6376 h->cpuid = ha->base_qpair->cpuid; 6377 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6378 6379 for (i = 0; i < ha->max_qpairs; i++) { 6380 unsigned long flags; 6381 6382 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6383 6384 h = &tgt->qphints[i + 1]; 6385 INIT_LIST_HEAD(&h->hint_elem); 6386 if (qpair) { 6387 h->qpair = qpair; 6388 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6389 list_add_tail(&h->hint_elem, &qpair->hints_list); 6390 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6391 h->cpuid = qpair->cpuid; 6392 } 6393 } 6394 6395 tgt->ha = ha; 6396 tgt->vha = base_vha; 6397 init_waitqueue_head(&tgt->waitQ); 6398 INIT_LIST_HEAD(&tgt->del_sess_list); 6399 spin_lock_init(&tgt->sess_work_lock); 6400 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6401 INIT_LIST_HEAD(&tgt->sess_works_list); 6402 atomic_set(&tgt->tgt_global_resets_count, 0); 6403 6404 base_vha->vha_tgt.qla_tgt = tgt; 6405 6406 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6407 "qla_target(%d): using 64 Bit PCI addressing", 6408 base_vha->vp_idx); 6409 /* 3 is reserved */ 6410 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6411 6412 mutex_lock(&qla_tgt_mutex); 6413 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6414 mutex_unlock(&qla_tgt_mutex); 6415 6416 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6417 ha->tgt.tgt_ops->add_target(base_vha); 6418 6419 return 0; 6420 } 6421 6422 /* Must be called under tgt_host_action_mutex */ 6423 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6424 { 6425 if (!vha->vha_tgt.qla_tgt) 6426 return 0; 6427 6428 if (vha->fc_vport) { 6429 qlt_release(vha->vha_tgt.qla_tgt); 6430 return 0; 6431 } 6432 6433 /* free left over qfull cmds */ 6434 qlt_init_term_exchange(vha); 6435 6436 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6437 vha->host_no, ha); 6438 qlt_release(vha->vha_tgt.qla_tgt); 6439 6440 return 0; 6441 } 6442 6443 void qlt_remove_target_resources(struct qla_hw_data *ha) 6444 { 6445 struct scsi_qla_host *node; 6446 u32 key = 0; 6447 6448 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6449 btree_remove32(&ha->tgt.host_map, key); 6450 6451 btree_destroy32(&ha->tgt.host_map); 6452 } 6453 6454 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6455 unsigned char *b) 6456 { 6457 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6458 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6459 put_unaligned_be64(wwpn, b); 6460 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6461 } 6462 6463 /** 6464 * qla_tgt_lport_register - register lport with external module 6465 * 6466 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6467 * @phys_wwpn: physical port WWPN 6468 * @npiv_wwpn: NPIV WWPN 6469 * @npiv_wwnn: NPIV WWNN 6470 * @callback: lport initialization callback for tcm_qla2xxx code 6471 */ 6472 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6473 u64 npiv_wwpn, u64 npiv_wwnn, 6474 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6475 { 6476 struct qla_tgt *tgt; 6477 struct scsi_qla_host *vha; 6478 struct qla_hw_data *ha; 6479 struct Scsi_Host *host; 6480 unsigned long flags; 6481 int rc; 6482 u8 b[WWN_SIZE]; 6483 6484 mutex_lock(&qla_tgt_mutex); 6485 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6486 vha = tgt->vha; 6487 ha = vha->hw; 6488 6489 host = vha->host; 6490 if (!host) 6491 continue; 6492 6493 if (!(host->hostt->supported_mode & MODE_TARGET)) 6494 continue; 6495 6496 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6497 continue; 6498 6499 spin_lock_irqsave(&ha->hardware_lock, flags); 6500 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6501 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6502 host->host_no); 6503 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6504 continue; 6505 } 6506 if (tgt->tgt_stop) { 6507 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6508 host->host_no); 6509 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6510 continue; 6511 } 6512 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6513 6514 if (!scsi_host_get(host)) { 6515 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6516 "Unable to scsi_host_get() for" 6517 " qla2xxx scsi_host\n"); 6518 continue; 6519 } 6520 qlt_lport_dump(vha, phys_wwpn, b); 6521 6522 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6523 scsi_host_put(host); 6524 continue; 6525 } 6526 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6527 if (rc != 0) 6528 scsi_host_put(host); 6529 6530 mutex_unlock(&qla_tgt_mutex); 6531 return rc; 6532 } 6533 mutex_unlock(&qla_tgt_mutex); 6534 6535 return -ENODEV; 6536 } 6537 EXPORT_SYMBOL(qlt_lport_register); 6538 6539 /** 6540 * qla_tgt_lport_deregister - Degister lport 6541 * 6542 * @vha: Registered scsi_qla_host pointer 6543 */ 6544 void qlt_lport_deregister(struct scsi_qla_host *vha) 6545 { 6546 struct qla_hw_data *ha = vha->hw; 6547 struct Scsi_Host *sh = vha->host; 6548 /* 6549 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6550 */ 6551 vha->vha_tgt.target_lport_ptr = NULL; 6552 ha->tgt.tgt_ops = NULL; 6553 /* 6554 * Release the Scsi_Host reference for the underlying qla2xxx host 6555 */ 6556 scsi_host_put(sh); 6557 } 6558 EXPORT_SYMBOL(qlt_lport_deregister); 6559 6560 /* Must be called under HW lock */ 6561 void qlt_set_mode(struct scsi_qla_host *vha) 6562 { 6563 switch (vha->qlini_mode) { 6564 case QLA2XXX_INI_MODE_DISABLED: 6565 case QLA2XXX_INI_MODE_EXCLUSIVE: 6566 vha->host->active_mode = MODE_TARGET; 6567 break; 6568 case QLA2XXX_INI_MODE_ENABLED: 6569 vha->host->active_mode = MODE_INITIATOR; 6570 break; 6571 case QLA2XXX_INI_MODE_DUAL: 6572 vha->host->active_mode = MODE_DUAL; 6573 break; 6574 default: 6575 break; 6576 } 6577 } 6578 6579 /* Must be called under HW lock */ 6580 static void qlt_clear_mode(struct scsi_qla_host *vha) 6581 { 6582 switch (vha->qlini_mode) { 6583 case QLA2XXX_INI_MODE_DISABLED: 6584 vha->host->active_mode = MODE_UNKNOWN; 6585 break; 6586 case QLA2XXX_INI_MODE_EXCLUSIVE: 6587 vha->host->active_mode = MODE_INITIATOR; 6588 break; 6589 case QLA2XXX_INI_MODE_ENABLED: 6590 case QLA2XXX_INI_MODE_DUAL: 6591 vha->host->active_mode = MODE_INITIATOR; 6592 break; 6593 default: 6594 break; 6595 } 6596 } 6597 6598 /* 6599 * qla_tgt_enable_vha - NO LOCK HELD 6600 * 6601 * host_reset, bring up w/ Target Mode Enabled 6602 */ 6603 void 6604 qlt_enable_vha(struct scsi_qla_host *vha) 6605 { 6606 struct qla_hw_data *ha = vha->hw; 6607 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6608 unsigned long flags; 6609 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6610 6611 if (!tgt) { 6612 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6613 "Unable to locate qla_tgt pointer from" 6614 " struct qla_hw_data\n"); 6615 dump_stack(); 6616 return; 6617 } 6618 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6619 return; 6620 6621 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6622 ha->tgt.num_act_qpairs = ha->max_qpairs; 6623 spin_lock_irqsave(&ha->hardware_lock, flags); 6624 tgt->tgt_stopped = 0; 6625 qlt_set_mode(vha); 6626 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6627 6628 mutex_lock(&ha->optrom_mutex); 6629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6630 "%s.\n", __func__); 6631 if (vha->vp_idx) { 6632 qla24xx_disable_vp(vha); 6633 qla24xx_enable_vp(vha); 6634 } else { 6635 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6636 qla2xxx_wake_dpc(base_vha); 6637 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6638 QLA_SUCCESS); 6639 } 6640 mutex_unlock(&ha->optrom_mutex); 6641 } 6642 EXPORT_SYMBOL(qlt_enable_vha); 6643 6644 /* 6645 * qla_tgt_disable_vha - NO LOCK HELD 6646 * 6647 * Disable Target Mode and reset the adapter 6648 */ 6649 static void qlt_disable_vha(struct scsi_qla_host *vha) 6650 { 6651 struct qla_hw_data *ha = vha->hw; 6652 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6653 unsigned long flags; 6654 6655 if (!tgt) { 6656 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6657 "Unable to locate qla_tgt pointer from" 6658 " struct qla_hw_data\n"); 6659 dump_stack(); 6660 return; 6661 } 6662 6663 spin_lock_irqsave(&ha->hardware_lock, flags); 6664 qlt_clear_mode(vha); 6665 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6666 6667 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6668 qla2xxx_wake_dpc(vha); 6669 6670 /* 6671 * We are expecting the offline state. 6672 * QLA_FUNCTION_FAILED means that adapter is offline. 6673 */ 6674 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6675 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6676 "adapter is offline\n"); 6677 } 6678 6679 /* 6680 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6681 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6682 * members. 6683 */ 6684 void 6685 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6686 { 6687 vha->vha_tgt.qla_tgt = NULL; 6688 6689 mutex_init(&vha->vha_tgt.tgt_mutex); 6690 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6691 6692 qlt_clear_mode(vha); 6693 6694 /* 6695 * NOTE: Currently the value is kept the same for <24xx and 6696 * >=24xx ISPs. If it is necessary to change it, 6697 * the check should be added for specific ISPs, 6698 * assigning the value appropriately. 6699 */ 6700 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6701 6702 qlt_add_target(ha, vha); 6703 } 6704 6705 u8 6706 qlt_rff_id(struct scsi_qla_host *vha) 6707 { 6708 u8 fc4_feature = 0; 6709 /* 6710 * FC-4 Feature bit 0 indicates target functionality to the name server. 6711 */ 6712 if (qla_tgt_mode_enabled(vha)) { 6713 fc4_feature = BIT_0; 6714 } else if (qla_ini_mode_enabled(vha)) { 6715 fc4_feature = BIT_1; 6716 } else if (qla_dual_mode_enabled(vha)) 6717 fc4_feature = BIT_0 | BIT_1; 6718 6719 return fc4_feature; 6720 } 6721 6722 /* 6723 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6724 * @ha: HA context 6725 * 6726 * Beginning of ATIO ring has initialization control block already built 6727 * by nvram config routine. 6728 * 6729 * Returns 0 on success. 6730 */ 6731 void 6732 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6733 { 6734 struct qla_hw_data *ha = vha->hw; 6735 uint16_t cnt; 6736 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6737 6738 if (qla_ini_mode_enabled(vha)) 6739 return; 6740 6741 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6742 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6743 pkt++; 6744 } 6745 6746 } 6747 6748 /* 6749 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6750 * @ha: SCSI driver HA context 6751 */ 6752 void 6753 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6754 { 6755 struct qla_hw_data *ha = vha->hw; 6756 struct atio_from_isp *pkt; 6757 int cnt, i; 6758 6759 if (!ha->flags.fw_started) 6760 return; 6761 6762 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6763 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6764 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6765 cnt = pkt->u.raw.entry_count; 6766 6767 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6768 /* 6769 * This packet is corrupted. The header + payload 6770 * can not be trusted. There is no point in passing 6771 * it further up. 6772 */ 6773 ql_log(ql_log_warn, vha, 0xd03c, 6774 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6775 &pkt->u.isp24.fcp_hdr.s_id, 6776 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6777 pkt->u.isp24.exchange_addr, pkt); 6778 6779 adjust_corrupted_atio(pkt); 6780 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6781 ha_locked, 0); 6782 } else { 6783 qlt_24xx_atio_pkt_all_vps(vha, 6784 (struct atio_from_isp *)pkt, ha_locked); 6785 } 6786 6787 for (i = 0; i < cnt; i++) { 6788 ha->tgt.atio_ring_index++; 6789 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6790 ha->tgt.atio_ring_index = 0; 6791 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6792 } else 6793 ha->tgt.atio_ring_ptr++; 6794 6795 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6796 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6797 } 6798 wmb(); 6799 } 6800 6801 /* Adjust ring index */ 6802 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6803 } 6804 6805 void 6806 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6807 { 6808 struct qla_hw_data *ha = vha->hw; 6809 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6810 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6811 6812 if (!QLA_TGT_MODE_ENABLED()) 6813 return; 6814 6815 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6816 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6817 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6818 6819 if (ha->flags.msix_enabled) { 6820 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6821 if (IS_QLA2071(ha)) { 6822 /* 4 ports Baker: Enable Interrupt Handshake */ 6823 icb->msix_atio = 0; 6824 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6825 } else { 6826 icb->msix_atio = cpu_to_le16(msix->entry); 6827 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6828 } 6829 ql_dbg(ql_dbg_init, vha, 0xf072, 6830 "Registering ICB vector 0x%x for atio que.\n", 6831 msix->entry); 6832 } 6833 } else { 6834 /* INTx|MSI */ 6835 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6836 icb->msix_atio = 0; 6837 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6838 ql_dbg(ql_dbg_init, vha, 0xf072, 6839 "%s: Use INTx for ATIOQ.\n", __func__); 6840 } 6841 } 6842 } 6843 6844 void 6845 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6846 { 6847 struct qla_hw_data *ha = vha->hw; 6848 u32 tmp; 6849 6850 if (!QLA_TGT_MODE_ENABLED()) 6851 return; 6852 6853 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6854 if (!ha->tgt.saved_set) { 6855 /* We save only once */ 6856 ha->tgt.saved_exchange_count = nv->exchange_count; 6857 ha->tgt.saved_firmware_options_1 = 6858 nv->firmware_options_1; 6859 ha->tgt.saved_firmware_options_2 = 6860 nv->firmware_options_2; 6861 ha->tgt.saved_firmware_options_3 = 6862 nv->firmware_options_3; 6863 ha->tgt.saved_set = 1; 6864 } 6865 6866 if (qla_tgt_mode_enabled(vha)) 6867 nv->exchange_count = cpu_to_le16(0xFFFF); 6868 else /* dual */ 6869 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6870 6871 /* Enable target mode */ 6872 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6873 6874 /* Disable ini mode, if requested */ 6875 if (qla_tgt_mode_enabled(vha)) 6876 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6877 6878 /* Disable Full Login after LIP */ 6879 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6880 /* Enable initial LIP */ 6881 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6882 if (ql2xtgt_tape_enable) 6883 /* Enable FC Tape support */ 6884 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6885 else 6886 /* Disable FC Tape support */ 6887 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6888 6889 /* Disable Full Login after LIP */ 6890 nv->host_p &= cpu_to_le32(~BIT_10); 6891 6892 /* 6893 * clear BIT 15 explicitly as we have seen at least 6894 * a couple of instances where this was set and this 6895 * was causing the firmware to not be initialized. 6896 */ 6897 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6898 /* Enable target PRLI control */ 6899 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6900 6901 if (IS_QLA25XX(ha)) { 6902 /* Change Loop-prefer to Pt-Pt */ 6903 tmp = ~(BIT_4|BIT_5|BIT_6); 6904 nv->firmware_options_2 &= cpu_to_le32(tmp); 6905 tmp = P2P << 4; 6906 nv->firmware_options_2 |= cpu_to_le32(tmp); 6907 } 6908 } else { 6909 if (ha->tgt.saved_set) { 6910 nv->exchange_count = ha->tgt.saved_exchange_count; 6911 nv->firmware_options_1 = 6912 ha->tgt.saved_firmware_options_1; 6913 nv->firmware_options_2 = 6914 ha->tgt.saved_firmware_options_2; 6915 nv->firmware_options_3 = 6916 ha->tgt.saved_firmware_options_3; 6917 } 6918 return; 6919 } 6920 6921 if (ha->base_qpair->enable_class_2) { 6922 if (vha->flags.init_done) 6923 fc_host_supported_classes(vha->host) = 6924 FC_COS_CLASS2 | FC_COS_CLASS3; 6925 6926 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6927 } else { 6928 if (vha->flags.init_done) 6929 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6930 6931 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6932 } 6933 } 6934 6935 void 6936 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6937 struct init_cb_24xx *icb) 6938 { 6939 struct qla_hw_data *ha = vha->hw; 6940 6941 if (!QLA_TGT_MODE_ENABLED()) 6942 return; 6943 6944 if (ha->tgt.node_name_set) { 6945 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6946 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6947 } 6948 } 6949 6950 void 6951 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6952 { 6953 struct qla_hw_data *ha = vha->hw; 6954 u32 tmp; 6955 6956 if (!QLA_TGT_MODE_ENABLED()) 6957 return; 6958 6959 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6960 if (!ha->tgt.saved_set) { 6961 /* We save only once */ 6962 ha->tgt.saved_exchange_count = nv->exchange_count; 6963 ha->tgt.saved_firmware_options_1 = 6964 nv->firmware_options_1; 6965 ha->tgt.saved_firmware_options_2 = 6966 nv->firmware_options_2; 6967 ha->tgt.saved_firmware_options_3 = 6968 nv->firmware_options_3; 6969 ha->tgt.saved_set = 1; 6970 } 6971 6972 if (qla_tgt_mode_enabled(vha)) 6973 nv->exchange_count = cpu_to_le16(0xFFFF); 6974 else /* dual */ 6975 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6976 6977 /* Enable target mode */ 6978 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6979 6980 /* Disable ini mode, if requested */ 6981 if (qla_tgt_mode_enabled(vha)) 6982 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6983 /* Disable Full Login after LIP */ 6984 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6985 /* Enable initial LIP */ 6986 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6987 /* 6988 * clear BIT 15 explicitly as we have seen at 6989 * least a couple of instances where this was set 6990 * and this was causing the firmware to not be 6991 * initialized. 6992 */ 6993 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6994 if (ql2xtgt_tape_enable) 6995 /* Enable FC tape support */ 6996 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6997 else 6998 /* Disable FC tape support */ 6999 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7000 7001 /* Disable Full Login after LIP */ 7002 nv->host_p &= cpu_to_le32(~BIT_10); 7003 /* Enable target PRLI control */ 7004 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7005 7006 /* Change Loop-prefer to Pt-Pt */ 7007 tmp = ~(BIT_4|BIT_5|BIT_6); 7008 nv->firmware_options_2 &= cpu_to_le32(tmp); 7009 tmp = P2P << 4; 7010 nv->firmware_options_2 |= cpu_to_le32(tmp); 7011 } else { 7012 if (ha->tgt.saved_set) { 7013 nv->exchange_count = ha->tgt.saved_exchange_count; 7014 nv->firmware_options_1 = 7015 ha->tgt.saved_firmware_options_1; 7016 nv->firmware_options_2 = 7017 ha->tgt.saved_firmware_options_2; 7018 nv->firmware_options_3 = 7019 ha->tgt.saved_firmware_options_3; 7020 } 7021 return; 7022 } 7023 7024 if (ha->base_qpair->enable_class_2) { 7025 if (vha->flags.init_done) 7026 fc_host_supported_classes(vha->host) = 7027 FC_COS_CLASS2 | FC_COS_CLASS3; 7028 7029 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7030 } else { 7031 if (vha->flags.init_done) 7032 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7033 7034 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7035 } 7036 } 7037 7038 void 7039 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7040 struct init_cb_81xx *icb) 7041 { 7042 struct qla_hw_data *ha = vha->hw; 7043 7044 if (!QLA_TGT_MODE_ENABLED()) 7045 return; 7046 7047 if (ha->tgt.node_name_set) { 7048 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7049 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7050 } 7051 } 7052 7053 void 7054 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7055 { 7056 if (!QLA_TGT_MODE_ENABLED()) 7057 return; 7058 7059 ha->msix_count += 1; /* For ATIO Q */ 7060 } 7061 7062 7063 void 7064 qlt_modify_vp_config(struct scsi_qla_host *vha, 7065 struct vp_config_entry_24xx *vpmod) 7066 { 7067 /* enable target mode. Bit5 = 1 => disable */ 7068 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7069 vpmod->options_idx1 &= ~BIT_5; 7070 7071 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7072 if (qla_tgt_mode_enabled(vha)) 7073 vpmod->options_idx1 &= ~BIT_4; 7074 } 7075 7076 void 7077 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7078 { 7079 int rc; 7080 7081 if (!QLA_TGT_MODE_ENABLED()) 7082 return; 7083 7084 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7085 IS_QLA28XX(ha)) { 7086 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7087 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7088 } else { 7089 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7090 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7091 } 7092 7093 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7094 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7095 7096 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7097 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7098 qlt_unknown_atio_work_fn); 7099 7100 qlt_clear_mode(base_vha); 7101 7102 rc = btree_init32(&ha->tgt.host_map); 7103 if (rc) 7104 ql_log(ql_log_info, base_vha, 0xd03d, 7105 "Unable to initialize ha->host_map btree\n"); 7106 7107 qlt_update_vp_map(base_vha, SET_VP_IDX); 7108 } 7109 7110 irqreturn_t 7111 qla83xx_msix_atio_q(int irq, void *dev_id) 7112 { 7113 struct rsp_que *rsp; 7114 scsi_qla_host_t *vha; 7115 struct qla_hw_data *ha; 7116 unsigned long flags; 7117 7118 rsp = (struct rsp_que *) dev_id; 7119 ha = rsp->hw; 7120 vha = pci_get_drvdata(ha->pdev); 7121 7122 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7123 7124 qlt_24xx_process_atio_queue(vha, 0); 7125 7126 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7127 7128 return IRQ_HANDLED; 7129 } 7130 7131 static void 7132 qlt_handle_abts_recv_work(struct work_struct *work) 7133 { 7134 struct qla_tgt_sess_op *op = container_of(work, 7135 struct qla_tgt_sess_op, work); 7136 scsi_qla_host_t *vha = op->vha; 7137 struct qla_hw_data *ha = vha->hw; 7138 unsigned long flags; 7139 7140 if (qla2x00_reset_active(vha) || 7141 (op->chip_reset != ha->base_qpair->chip_reset)) 7142 return; 7143 7144 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7145 qlt_24xx_process_atio_queue(vha, 0); 7146 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7147 7148 spin_lock_irqsave(&ha->hardware_lock, flags); 7149 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7150 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7151 7152 kfree(op); 7153 } 7154 7155 void 7156 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7157 response_t *pkt) 7158 { 7159 struct qla_tgt_sess_op *op; 7160 7161 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7162 7163 if (!op) { 7164 /* do not reach for ATIO queue here. This is best effort err 7165 * recovery at this point. 7166 */ 7167 qlt_response_pkt_all_vps(vha, rsp, pkt); 7168 return; 7169 } 7170 7171 memcpy(&op->atio, pkt, sizeof(*pkt)); 7172 op->vha = vha; 7173 op->chip_reset = vha->hw->base_qpair->chip_reset; 7174 op->rsp = rsp; 7175 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7176 queue_work(qla_tgt_wq, &op->work); 7177 return; 7178 } 7179 7180 int 7181 qlt_mem_alloc(struct qla_hw_data *ha) 7182 { 7183 if (!QLA_TGT_MODE_ENABLED()) 7184 return 0; 7185 7186 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7187 sizeof(struct qla_tgt_vp_map), 7188 GFP_KERNEL); 7189 if (!ha->tgt.tgt_vp_map) 7190 return -ENOMEM; 7191 7192 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7193 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7194 &ha->tgt.atio_dma, GFP_KERNEL); 7195 if (!ha->tgt.atio_ring) { 7196 kfree(ha->tgt.tgt_vp_map); 7197 return -ENOMEM; 7198 } 7199 return 0; 7200 } 7201 7202 void 7203 qlt_mem_free(struct qla_hw_data *ha) 7204 { 7205 if (!QLA_TGT_MODE_ENABLED()) 7206 return; 7207 7208 if (ha->tgt.atio_ring) { 7209 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7210 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7211 ha->tgt.atio_dma); 7212 } 7213 ha->tgt.atio_ring = NULL; 7214 ha->tgt.atio_dma = 0; 7215 kfree(ha->tgt.tgt_vp_map); 7216 ha->tgt.tgt_vp_map = NULL; 7217 } 7218 7219 /* vport_slock to be held by the caller */ 7220 void 7221 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7222 { 7223 void *slot; 7224 u32 key; 7225 int rc; 7226 7227 if (!QLA_TGT_MODE_ENABLED()) 7228 return; 7229 7230 key = vha->d_id.b24; 7231 7232 switch (cmd) { 7233 case SET_VP_IDX: 7234 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7235 break; 7236 case SET_AL_PA: 7237 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7238 if (!slot) { 7239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7240 "Save vha in host_map %p %06x\n", vha, key); 7241 rc = btree_insert32(&vha->hw->tgt.host_map, 7242 key, vha, GFP_ATOMIC); 7243 if (rc) 7244 ql_log(ql_log_info, vha, 0xd03e, 7245 "Unable to insert s_id into host_map: %06x\n", 7246 key); 7247 return; 7248 } 7249 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7250 "replace existing vha in host_map %p %06x\n", vha, key); 7251 btree_update32(&vha->hw->tgt.host_map, key, vha); 7252 break; 7253 case RESET_VP_IDX: 7254 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7255 break; 7256 case RESET_AL_PA: 7257 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7258 "clear vha in host_map %p %06x\n", vha, key); 7259 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7260 if (slot) 7261 btree_remove32(&vha->hw->tgt.host_map, key); 7262 vha->d_id.b24 = 0; 7263 break; 7264 } 7265 } 7266 7267 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7268 { 7269 7270 if (!vha->d_id.b24) { 7271 vha->d_id = id; 7272 qlt_update_vp_map(vha, SET_AL_PA); 7273 } else if (vha->d_id.b24 != id.b24) { 7274 qlt_update_vp_map(vha, RESET_AL_PA); 7275 vha->d_id = id; 7276 qlt_update_vp_map(vha, SET_AL_PA); 7277 } 7278 } 7279 7280 static int __init qlt_parse_ini_mode(void) 7281 { 7282 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7283 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7284 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7285 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7286 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7287 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7288 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7289 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7290 else 7291 return false; 7292 7293 return true; 7294 } 7295 7296 int __init qlt_init(void) 7297 { 7298 int ret; 7299 7300 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7301 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7302 7303 if (!qlt_parse_ini_mode()) { 7304 ql_log(ql_log_fatal, NULL, 0xe06b, 7305 "qlt_parse_ini_mode() failed\n"); 7306 return -EINVAL; 7307 } 7308 7309 if (!QLA_TGT_MODE_ENABLED()) 7310 return 0; 7311 7312 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7313 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7314 qla_tgt_mgmt_cmd), 0, NULL); 7315 if (!qla_tgt_mgmt_cmd_cachep) { 7316 ql_log(ql_log_fatal, NULL, 0xd04b, 7317 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7318 return -ENOMEM; 7319 } 7320 7321 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7322 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7323 0, NULL); 7324 7325 if (!qla_tgt_plogi_cachep) { 7326 ql_log(ql_log_fatal, NULL, 0xe06d, 7327 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7328 ret = -ENOMEM; 7329 goto out_mgmt_cmd_cachep; 7330 } 7331 7332 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7333 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7334 if (!qla_tgt_mgmt_cmd_mempool) { 7335 ql_log(ql_log_fatal, NULL, 0xe06e, 7336 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7337 ret = -ENOMEM; 7338 goto out_plogi_cachep; 7339 } 7340 7341 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7342 if (!qla_tgt_wq) { 7343 ql_log(ql_log_fatal, NULL, 0xe06f, 7344 "alloc_workqueue for qla_tgt_wq failed\n"); 7345 ret = -ENOMEM; 7346 goto out_cmd_mempool; 7347 } 7348 /* 7349 * Return 1 to signal that initiator-mode is being disabled 7350 */ 7351 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7352 7353 out_cmd_mempool: 7354 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7355 out_plogi_cachep: 7356 kmem_cache_destroy(qla_tgt_plogi_cachep); 7357 out_mgmt_cmd_cachep: 7358 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7359 return ret; 7360 } 7361 7362 void qlt_exit(void) 7363 { 7364 if (!QLA_TGT_MODE_ENABLED()) 7365 return; 7366 7367 destroy_workqueue(qla_tgt_wq); 7368 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7369 kmem_cache_destroy(qla_tgt_plogi_cachep); 7370 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7371 } 7372