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 int ql2xuctrlirq = 1; 52 module_param(ql2xuctrlirq, int, 0644); 53 MODULE_PARM_DESC(ql2xuctrlirq, 54 "User to control IRQ placement via smp_affinity." 55 "Valid with qlini_mode=disabled." 56 "1(default): enable"); 57 58 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 59 60 static int qla_sam_status = SAM_STAT_BUSY; 61 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 62 63 /* 64 * From scsi/fc/fc_fcp.h 65 */ 66 enum fcp_resp_rsp_codes { 67 FCP_TMF_CMPL = 0, 68 FCP_DATA_LEN_INVALID = 1, 69 FCP_CMND_FIELDS_INVALID = 2, 70 FCP_DATA_PARAM_MISMATCH = 3, 71 FCP_TMF_REJECTED = 4, 72 FCP_TMF_FAILED = 5, 73 FCP_TMF_INVALID_LUN = 9, 74 }; 75 76 /* 77 * fc_pri_ta from scsi/fc/fc_fcp.h 78 */ 79 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 80 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 81 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 82 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 83 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 84 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 85 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 86 87 /* 88 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 89 * must be called under HW lock and could unlock/lock it inside. 90 * It isn't an issue, since in the current implementation on the time when 91 * those functions are called: 92 * 93 * - Either context is IRQ and only IRQ handler can modify HW data, 94 * including rings related fields, 95 * 96 * - Or access to target mode variables from struct qla_tgt doesn't 97 * cross those functions boundaries, except tgt_stop, which 98 * additionally protected by irq_cmd_count. 99 */ 100 /* Predefs for callbacks handed to qla2xxx LLD */ 101 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 102 struct atio_from_isp *pkt, uint8_t); 103 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 104 response_t *pkt); 105 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 106 int fn, void *iocb, int flags); 107 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 109 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 110 struct atio_from_isp *atio, uint16_t status, int qfull); 111 static void qlt_disable_vha(struct scsi_qla_host *vha); 112 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 113 static void qlt_send_notify_ack(struct qla_qpair *qpair, 114 struct imm_ntfy_from_isp *ntfy, 115 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 116 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 117 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 118 struct imm_ntfy_from_isp *imm, int ha_locked); 119 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 120 fc_port_t *fcport, bool local); 121 void qlt_unreg_sess(struct fc_port *sess); 122 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 123 struct abts_recv_from_24xx *); 124 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 125 uint16_t); 126 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 127 static inline uint32_t qlt_make_handle(struct qla_qpair *); 128 129 /* 130 * Global Variables 131 */ 132 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 133 struct kmem_cache *qla_tgt_plogi_cachep; 134 static mempool_t *qla_tgt_mgmt_cmd_mempool; 135 static struct workqueue_struct *qla_tgt_wq; 136 static DEFINE_MUTEX(qla_tgt_mutex); 137 static LIST_HEAD(qla_tgt_glist); 138 139 static const char *prot_op_str(u32 prot_op) 140 { 141 switch (prot_op) { 142 case TARGET_PROT_NORMAL: return "NORMAL"; 143 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 144 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 145 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 146 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 147 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 148 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 149 default: return "UNKNOWN"; 150 } 151 } 152 153 /* This API intentionally takes dest as a parameter, rather than returning 154 * int value to avoid caller forgetting to issue wmb() after the store */ 155 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 156 { 157 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 158 *dest = atomic_inc_return(&base_vha->generation_tick); 159 /* memory barrier */ 160 wmb(); 161 } 162 163 /* Might release hw lock, then reaquire!! */ 164 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 165 { 166 /* Send marker if required */ 167 if (unlikely(vha->marker_needed != 0)) { 168 int rc = qla2x00_issue_marker(vha, vha_locked); 169 170 if (rc != QLA_SUCCESS) { 171 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 172 "qla_target(%d): issue_marker() failed\n", 173 vha->vp_idx); 174 } 175 return rc; 176 } 177 return QLA_SUCCESS; 178 } 179 180 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, 181 be_id_t d_id) 182 { 183 struct scsi_qla_host *host; 184 uint32_t key; 185 186 if (vha->d_id.b.area == d_id.area && 187 vha->d_id.b.domain == d_id.domain && 188 vha->d_id.b.al_pa == d_id.al_pa) 189 return vha; 190 191 key = be_to_port_id(d_id).b24; 192 193 host = btree_lookup32(&vha->hw->host_map, key); 194 if (!host) 195 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 196 "Unable to find host %06x\n", key); 197 198 return host; 199 } 200 201 static inline 202 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 203 uint16_t vp_idx) 204 { 205 struct qla_hw_data *ha = vha->hw; 206 207 if (vha->vp_idx == vp_idx) 208 return vha; 209 210 BUG_ON(ha->tgt.tgt_vp_map == NULL); 211 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 212 return ha->tgt.tgt_vp_map[vp_idx].vha; 213 214 return NULL; 215 } 216 217 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 218 { 219 unsigned long flags; 220 221 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 222 223 vha->hw->tgt.num_pend_cmds++; 224 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 225 vha->qla_stats.stat_max_pend_cmds = 226 vha->hw->tgt.num_pend_cmds; 227 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 228 } 229 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 230 { 231 unsigned long flags; 232 233 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 234 vha->hw->tgt.num_pend_cmds--; 235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 236 } 237 238 239 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 240 struct atio_from_isp *atio, uint8_t ha_locked) 241 { 242 struct qla_tgt_sess_op *u; 243 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 244 unsigned long flags; 245 246 if (tgt->tgt_stop) { 247 ql_dbg(ql_dbg_async, vha, 0x502c, 248 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 249 vha->vp_idx); 250 goto out_term; 251 } 252 253 u = kzalloc(sizeof(*u), GFP_ATOMIC); 254 if (u == NULL) 255 goto out_term; 256 257 u->vha = vha; 258 memcpy(&u->atio, atio, sizeof(*atio)); 259 INIT_LIST_HEAD(&u->cmd_list); 260 261 spin_lock_irqsave(&vha->cmd_list_lock, flags); 262 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 263 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 264 265 schedule_delayed_work(&vha->unknown_atio_work, 1); 266 267 out: 268 return; 269 270 out_term: 271 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 272 goto out; 273 } 274 275 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 276 uint8_t ha_locked) 277 { 278 struct qla_tgt_sess_op *u, *t; 279 scsi_qla_host_t *host; 280 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 281 unsigned long flags; 282 uint8_t queued = 0; 283 284 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 285 if (u->aborted) { 286 ql_dbg(ql_dbg_async, vha, 0x502e, 287 "Freeing unknown %s %p, because of Abort\n", 288 "ATIO_TYPE7", u); 289 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 290 &u->atio, ha_locked, 0); 291 goto abort; 292 } 293 294 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 295 if (host != NULL) { 296 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 297 "Requeuing unknown ATIO_TYPE7 %p\n", u); 298 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 299 } else if (tgt->tgt_stop) { 300 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 301 "Freeing unknown %s %p, because tgt is being stopped\n", 302 "ATIO_TYPE7", u); 303 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 304 &u->atio, ha_locked, 0); 305 } else { 306 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 307 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 308 if (!queued) { 309 queued = 1; 310 schedule_delayed_work(&vha->unknown_atio_work, 311 1); 312 } 313 continue; 314 } 315 316 abort: 317 spin_lock_irqsave(&vha->cmd_list_lock, flags); 318 list_del(&u->cmd_list); 319 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 320 kfree(u); 321 } 322 } 323 324 void qlt_unknown_atio_work_fn(struct work_struct *work) 325 { 326 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 327 struct scsi_qla_host, unknown_atio_work); 328 329 qlt_try_to_dequeue_unknown_atios(vha, 0); 330 } 331 332 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 333 struct atio_from_isp *atio, uint8_t ha_locked) 334 { 335 ql_dbg(ql_dbg_tgt, vha, 0xe072, 336 "%s: qla_target(%d): type %x ox_id %04x\n", 337 __func__, vha->vp_idx, atio->u.raw.entry_type, 338 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 339 340 switch (atio->u.raw.entry_type) { 341 case ATIO_TYPE7: 342 { 343 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 344 atio->u.isp24.fcp_hdr.d_id); 345 if (unlikely(NULL == host)) { 346 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 347 "qla_target(%d): Received ATIO_TYPE7 " 348 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 349 atio->u.isp24.fcp_hdr.d_id.domain, 350 atio->u.isp24.fcp_hdr.d_id.area, 351 atio->u.isp24.fcp_hdr.d_id.al_pa); 352 353 354 qlt_queue_unknown_atio(vha, atio, ha_locked); 355 break; 356 } 357 if (unlikely(!list_empty(&vha->unknown_atio_list))) 358 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 359 360 qlt_24xx_atio_pkt(host, atio, ha_locked); 361 break; 362 } 363 364 case IMMED_NOTIFY_TYPE: 365 { 366 struct scsi_qla_host *host = vha; 367 struct imm_ntfy_from_isp *entry = 368 (struct imm_ntfy_from_isp *)atio; 369 370 qlt_issue_marker(vha, ha_locked); 371 372 if ((entry->u.isp24.vp_index != 0xFF) && 373 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 374 host = qlt_find_host_by_vp_idx(vha, 375 entry->u.isp24.vp_index); 376 if (unlikely(!host)) { 377 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 378 "qla_target(%d): Received " 379 "ATIO (IMMED_NOTIFY_TYPE) " 380 "with unknown vp_index %d\n", 381 vha->vp_idx, entry->u.isp24.vp_index); 382 break; 383 } 384 } 385 qlt_24xx_atio_pkt(host, atio, ha_locked); 386 break; 387 } 388 389 case VP_RPT_ID_IOCB_TYPE: 390 qla24xx_report_id_acquisition(vha, 391 (struct vp_rpt_id_entry_24xx *)atio); 392 break; 393 394 case ABTS_RECV_24XX: 395 { 396 struct abts_recv_from_24xx *entry = 397 (struct abts_recv_from_24xx *)atio; 398 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 399 entry->vp_index); 400 unsigned long flags; 401 402 if (unlikely(!host)) { 403 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 404 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 405 "received, with unknown vp_index %d\n", 406 vha->vp_idx, entry->vp_index); 407 break; 408 } 409 if (!ha_locked) 410 spin_lock_irqsave(&host->hw->hardware_lock, flags); 411 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 412 if (!ha_locked) 413 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 414 break; 415 } 416 417 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 418 419 default: 420 ql_dbg(ql_dbg_tgt, vha, 0xe040, 421 "qla_target(%d): Received unknown ATIO atio " 422 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 423 break; 424 } 425 426 return false; 427 } 428 429 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 430 struct rsp_que *rsp, response_t *pkt) 431 { 432 switch (pkt->entry_type) { 433 case CTIO_CRC2: 434 ql_dbg(ql_dbg_tgt, vha, 0xe073, 435 "qla_target(%d):%s: CRC2 Response pkt\n", 436 vha->vp_idx, __func__); 437 fallthrough; 438 case CTIO_TYPE7: 439 { 440 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 441 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 442 entry->vp_index); 443 if (unlikely(!host)) { 444 ql_dbg(ql_dbg_tgt, vha, 0xe041, 445 "qla_target(%d): Response pkt (CTIO_TYPE7) " 446 "received, with unknown vp_index %d\n", 447 vha->vp_idx, entry->vp_index); 448 break; 449 } 450 qlt_response_pkt(host, rsp, pkt); 451 break; 452 } 453 454 case IMMED_NOTIFY_TYPE: 455 { 456 struct scsi_qla_host *host; 457 struct imm_ntfy_from_isp *entry = 458 (struct imm_ntfy_from_isp *)pkt; 459 460 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 461 if (unlikely(!host)) { 462 ql_dbg(ql_dbg_tgt, vha, 0xe042, 463 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 464 "received, with unknown vp_index %d\n", 465 vha->vp_idx, entry->u.isp24.vp_index); 466 break; 467 } 468 qlt_response_pkt(host, rsp, pkt); 469 break; 470 } 471 472 case NOTIFY_ACK_TYPE: 473 { 474 struct scsi_qla_host *host = vha; 475 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 476 477 if (0xFF != entry->u.isp24.vp_index) { 478 host = qlt_find_host_by_vp_idx(vha, 479 entry->u.isp24.vp_index); 480 if (unlikely(!host)) { 481 ql_dbg(ql_dbg_tgt, vha, 0xe043, 482 "qla_target(%d): Response " 483 "pkt (NOTIFY_ACK_TYPE) " 484 "received, with unknown " 485 "vp_index %d\n", vha->vp_idx, 486 entry->u.isp24.vp_index); 487 break; 488 } 489 } 490 qlt_response_pkt(host, rsp, pkt); 491 break; 492 } 493 494 case ABTS_RECV_24XX: 495 { 496 struct abts_recv_from_24xx *entry = 497 (struct abts_recv_from_24xx *)pkt; 498 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 499 entry->vp_index); 500 if (unlikely(!host)) { 501 ql_dbg(ql_dbg_tgt, vha, 0xe044, 502 "qla_target(%d): Response pkt " 503 "(ABTS_RECV_24XX) received, with unknown " 504 "vp_index %d\n", vha->vp_idx, entry->vp_index); 505 break; 506 } 507 qlt_response_pkt(host, rsp, pkt); 508 break; 509 } 510 511 case ABTS_RESP_24XX: 512 { 513 struct abts_resp_to_24xx *entry = 514 (struct abts_resp_to_24xx *)pkt; 515 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 516 entry->vp_index); 517 if (unlikely(!host)) { 518 ql_dbg(ql_dbg_tgt, vha, 0xe045, 519 "qla_target(%d): Response pkt " 520 "(ABTS_RECV_24XX) received, with unknown " 521 "vp_index %d\n", vha->vp_idx, entry->vp_index); 522 break; 523 } 524 qlt_response_pkt(host, rsp, pkt); 525 break; 526 } 527 default: 528 qlt_response_pkt(vha, rsp, pkt); 529 break; 530 } 531 532 } 533 534 /* 535 * All qlt_plogi_ack_t operations are protected by hardware_lock 536 */ 537 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 538 struct imm_ntfy_from_isp *ntfy, int type) 539 { 540 struct qla_work_evt *e; 541 542 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 543 if (!e) 544 return QLA_FUNCTION_FAILED; 545 546 e->u.nack.fcport = fcport; 547 e->u.nack.type = type; 548 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 549 return qla2x00_post_work(vha, e); 550 } 551 552 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 553 { 554 struct scsi_qla_host *vha = sp->vha; 555 unsigned long flags; 556 557 ql_dbg(ql_dbg_disc, vha, 0x20f2, 558 "Async done-%s res %x %8phC type %d\n", 559 sp->name, res, sp->fcport->port_name, sp->type); 560 561 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 562 sp->fcport->flags &= ~FCF_ASYNC_SENT; 563 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 564 565 switch (sp->type) { 566 case SRB_NACK_PLOGI: 567 sp->fcport->login_gen++; 568 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 569 sp->fcport->logout_on_delete = 1; 570 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 571 sp->fcport->send_els_logo = 0; 572 573 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 574 ql_dbg(ql_dbg_edif, vha, 0x20ef, 575 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 576 sp->fcport->port_name); 577 qla2x00_set_fcport_disc_state(sp->fcport, 578 DSC_LOGIN_AUTH_PEND); 579 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 580 sp->fcport->d_id.b24); 581 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 582 0, sp->fcport); 583 } 584 break; 585 586 case SRB_NACK_PRLI: 587 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 588 sp->fcport->deleted = 0; 589 sp->fcport->send_els_logo = 0; 590 591 if (!sp->fcport->login_succ && 592 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 593 sp->fcport->login_succ = 1; 594 595 vha->fcport_count++; 596 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 597 qla24xx_sched_upd_fcport(sp->fcport); 598 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 599 } else { 600 sp->fcport->login_retry = 0; 601 qla2x00_set_fcport_disc_state(sp->fcport, 602 DSC_LOGIN_COMPLETE); 603 sp->fcport->deleted = 0; 604 sp->fcport->logout_on_delete = 1; 605 } 606 break; 607 608 case SRB_NACK_LOGO: 609 sp->fcport->login_gen++; 610 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 611 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 612 break; 613 } 614 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 615 616 kref_put(&sp->cmd_kref, qla2x00_sp_release); 617 } 618 619 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 620 struct imm_ntfy_from_isp *ntfy, int type) 621 { 622 int rval = QLA_FUNCTION_FAILED; 623 srb_t *sp; 624 char *c = NULL; 625 626 fcport->flags |= FCF_ASYNC_SENT; 627 switch (type) { 628 case SRB_NACK_PLOGI: 629 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 630 c = "PLOGI"; 631 if (vha->hw->flags.edif_enabled && 632 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) 633 fcport->flags |= FCF_FCSP_DEVICE; 634 break; 635 case SRB_NACK_PRLI: 636 fcport->fw_login_state = DSC_LS_PRLI_PEND; 637 fcport->deleted = 0; 638 c = "PRLI"; 639 break; 640 case SRB_NACK_LOGO: 641 fcport->fw_login_state = DSC_LS_LOGO_PEND; 642 c = "LOGO"; 643 break; 644 } 645 646 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 647 if (!sp) 648 goto done; 649 650 sp->type = type; 651 sp->name = "nack"; 652 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, 653 qla2x00_async_nack_sp_done); 654 655 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 656 657 ql_dbg(ql_dbg_disc, vha, 0x20f4, 658 "Async-%s %8phC hndl %x %s\n", 659 sp->name, fcport->port_name, sp->handle, c); 660 661 rval = qla2x00_start_sp(sp); 662 if (rval != QLA_SUCCESS) 663 goto done_free_sp; 664 665 return rval; 666 667 done_free_sp: 668 kref_put(&sp->cmd_kref, qla2x00_sp_release); 669 done: 670 fcport->flags &= ~FCF_ASYNC_SENT; 671 return rval; 672 } 673 674 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 675 { 676 fc_port_t *t; 677 678 switch (e->u.nack.type) { 679 case SRB_NACK_PRLI: 680 t = e->u.nack.fcport; 681 flush_work(&t->del_work); 682 flush_work(&t->free_work); 683 mutex_lock(&vha->vha_tgt.tgt_mutex); 684 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 685 mutex_unlock(&vha->vha_tgt.tgt_mutex); 686 if (t) { 687 ql_log(ql_log_info, vha, 0xd034, 688 "%s create sess success %p", __func__, t); 689 /* create sess has an extra kref */ 690 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 691 } 692 break; 693 } 694 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 695 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 696 } 697 698 void qla24xx_delete_sess_fn(struct work_struct *work) 699 { 700 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 701 struct qla_hw_data *ha = NULL; 702 703 if (!fcport || !fcport->vha || !fcport->vha->hw) 704 return; 705 706 ha = fcport->vha->hw; 707 708 if (fcport->se_sess) { 709 ha->tgt.tgt_ops->shutdown_sess(fcport); 710 ha->tgt.tgt_ops->put_sess(fcport); 711 } else { 712 qlt_unreg_sess(fcport); 713 } 714 } 715 716 /* 717 * Called from qla2x00_reg_remote_port() 718 */ 719 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 720 { 721 struct qla_hw_data *ha = vha->hw; 722 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 723 struct fc_port *sess = fcport; 724 unsigned long flags; 725 726 if (!vha->hw->tgt.tgt_ops) 727 return; 728 729 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 730 if (tgt->tgt_stop) { 731 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 732 return; 733 } 734 735 if (fcport->disc_state == DSC_DELETE_PEND) { 736 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 737 return; 738 } 739 740 if (!sess->se_sess) { 741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 742 743 mutex_lock(&vha->vha_tgt.tgt_mutex); 744 sess = qlt_create_sess(vha, fcport, false); 745 mutex_unlock(&vha->vha_tgt.tgt_mutex); 746 747 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 748 } else { 749 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 751 return; 752 } 753 754 if (!kref_get_unless_zero(&sess->sess_kref)) { 755 ql_dbg(ql_dbg_disc, vha, 0x2107, 756 "%s: kref_get fail sess %8phC \n", 757 __func__, sess->port_name); 758 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 759 return; 760 } 761 762 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 763 "qla_target(%u): %ssession for port %8phC " 764 "(loop ID %d) reappeared\n", vha->vp_idx, 765 sess->local ? "local " : "", sess->port_name, sess->loop_id); 766 767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 768 "Reappeared sess %p\n", sess); 769 770 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 771 fcport->loop_id, 772 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 773 } 774 775 if (sess && sess->local) { 776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 777 "qla_target(%u): local session for " 778 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 779 fcport->port_name, sess->loop_id); 780 sess->local = 0; 781 } 782 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 783 784 ha->tgt.tgt_ops->put_sess(sess); 785 } 786 787 /* 788 * This is a zero-base ref-counting solution, since hardware_lock 789 * guarantees that ref_count is not modified concurrently. 790 * Upon successful return content of iocb is undefined 791 */ 792 static struct qlt_plogi_ack_t * 793 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 794 struct imm_ntfy_from_isp *iocb) 795 { 796 struct qlt_plogi_ack_t *pla; 797 798 lockdep_assert_held(&vha->hw->hardware_lock); 799 800 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 801 if (pla->id.b24 == id->b24) { 802 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 803 "%s %d %8phC Term INOT due to new INOT", 804 __func__, __LINE__, 805 pla->iocb.u.isp24.port_name); 806 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 807 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 808 return pla; 809 } 810 } 811 812 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 813 if (!pla) { 814 ql_dbg(ql_dbg_async, vha, 0x5088, 815 "qla_target(%d): Allocation of plogi_ack failed\n", 816 vha->vp_idx); 817 return NULL; 818 } 819 820 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 821 pla->id = *id; 822 list_add_tail(&pla->list, &vha->plogi_ack_list); 823 824 return pla; 825 } 826 827 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 828 struct qlt_plogi_ack_t *pla) 829 { 830 struct imm_ntfy_from_isp *iocb = &pla->iocb; 831 port_id_t port_id; 832 uint16_t loop_id; 833 fc_port_t *fcport = pla->fcport; 834 835 BUG_ON(!pla->ref_count); 836 pla->ref_count--; 837 838 if (pla->ref_count) 839 return; 840 841 ql_dbg(ql_dbg_disc, vha, 0x5089, 842 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 843 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 844 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 845 iocb->u.isp24.port_id[0], 846 le16_to_cpu(iocb->u.isp24.nport_handle), 847 iocb->u.isp24.exchange_address, iocb->ox_id); 848 849 port_id.b.domain = iocb->u.isp24.port_id[2]; 850 port_id.b.area = iocb->u.isp24.port_id[1]; 851 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 852 port_id.b.rsvd_1 = 0; 853 854 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 855 856 fcport->loop_id = loop_id; 857 fcport->d_id = port_id; 858 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 859 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 860 else 861 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 862 863 list_for_each_entry(fcport, &vha->vp_fcports, list) { 864 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 865 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 866 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 867 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 868 } 869 870 list_del(&pla->list); 871 kmem_cache_free(qla_tgt_plogi_cachep, pla); 872 } 873 874 void 875 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 876 struct fc_port *sess, enum qlt_plogi_link_t link) 877 { 878 struct imm_ntfy_from_isp *iocb = &pla->iocb; 879 /* Inc ref_count first because link might already be pointing at pla */ 880 pla->ref_count++; 881 882 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 883 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 884 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 885 sess, link, sess->port_name, 886 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 887 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 888 pla->ref_count, pla, link); 889 890 if (link == QLT_PLOGI_LINK_CONFLICT) { 891 switch (sess->disc_state) { 892 case DSC_DELETED: 893 case DSC_DELETE_PEND: 894 pla->ref_count--; 895 return; 896 default: 897 break; 898 } 899 } 900 901 if (sess->plogi_link[link]) 902 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 903 904 if (link == QLT_PLOGI_LINK_SAME_WWN) 905 pla->fcport = sess; 906 907 sess->plogi_link[link] = pla; 908 } 909 910 typedef struct { 911 /* These fields must be initialized by the caller */ 912 port_id_t id; 913 /* 914 * number of cmds dropped while we were waiting for 915 * initiator to ack LOGO initialize to 1 if LOGO is 916 * triggered by a command, otherwise, to 0 917 */ 918 int cmd_count; 919 920 /* These fields are used by callee */ 921 struct list_head list; 922 } qlt_port_logo_t; 923 924 static void 925 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 926 { 927 qlt_port_logo_t *tmp; 928 int res; 929 930 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 931 res = 0; 932 goto out; 933 } 934 935 mutex_lock(&vha->vha_tgt.tgt_mutex); 936 937 list_for_each_entry(tmp, &vha->logo_list, list) { 938 if (tmp->id.b24 == logo->id.b24) { 939 tmp->cmd_count += logo->cmd_count; 940 mutex_unlock(&vha->vha_tgt.tgt_mutex); 941 return; 942 } 943 } 944 945 list_add_tail(&logo->list, &vha->logo_list); 946 947 mutex_unlock(&vha->vha_tgt.tgt_mutex); 948 949 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 950 951 mutex_lock(&vha->vha_tgt.tgt_mutex); 952 list_del(&logo->list); 953 mutex_unlock(&vha->vha_tgt.tgt_mutex); 954 955 out: 956 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 957 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 958 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 959 logo->cmd_count, res); 960 } 961 962 void qlt_free_session_done(struct work_struct *work) 963 { 964 struct fc_port *sess = container_of(work, struct fc_port, 965 free_work); 966 struct qla_tgt *tgt = sess->tgt; 967 struct scsi_qla_host *vha = sess->vha; 968 struct qla_hw_data *ha = vha->hw; 969 unsigned long flags; 970 bool logout_started = false; 971 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 972 struct qlt_plogi_ack_t *own = 973 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 974 975 ql_dbg(ql_dbg_disc, vha, 0xf084, 976 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 977 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 978 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 979 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 980 sess->logout_on_delete, sess->keep_nport_handle, 981 sess->send_els_logo); 982 983 if (!IS_SW_RESV_ADDR(sess->d_id)) { 984 qla2x00_mark_device_lost(vha, sess, 0); 985 986 if (sess->send_els_logo) { 987 qlt_port_logo_t logo; 988 989 logo.id = sess->d_id; 990 logo.cmd_count = 0; 991 INIT_LIST_HEAD(&logo.list); 992 if (!own) 993 qlt_send_first_logo(vha, &logo); 994 sess->send_els_logo = 0; 995 } 996 997 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 998 int rc; 999 1000 if (!own || 1001 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1002 sess->logout_completed = 0; 1003 rc = qla2x00_post_async_logout_work(vha, sess, 1004 NULL); 1005 if (rc != QLA_SUCCESS) 1006 ql_log(ql_log_warn, vha, 0xf085, 1007 "Schedule logo failed sess %p rc %d\n", 1008 sess, rc); 1009 else 1010 logout_started = true; 1011 } else if (own && (own->iocb.u.isp24.status_subcode == 1012 ELS_PRLI) && ha->flags.rida_fmt2) { 1013 rc = qla2x00_post_async_prlo_work(vha, sess, 1014 NULL); 1015 if (rc != QLA_SUCCESS) 1016 ql_log(ql_log_warn, vha, 0xf085, 1017 "Schedule PRLO failed sess %p rc %d\n", 1018 sess, rc); 1019 else 1020 logout_started = true; 1021 } 1022 } /* if sess->logout_on_delete */ 1023 1024 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1025 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1026 sess->nvme_flag |= NVME_FLAG_DELETING; 1027 qla_nvme_unregister_remote_port(sess); 1028 } 1029 1030 if (ha->flags.edif_enabled && 1031 (!own || (own && 1032 own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 1033 sess->edif.authok = 0; 1034 if (!ha->flags.host_shutting_down) { 1035 ql_dbg(ql_dbg_edif, vha, 0x911e, 1036 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 1037 __func__, sess->port_name); 1038 qla2x00_release_all_sadb(vha, sess); 1039 } else { 1040 ql_dbg(ql_dbg_edif, vha, 0x911e, 1041 "%s bypassing release_all_sadb\n", 1042 __func__); 1043 } 1044 1045 qla_edif_clear_appdata(vha, sess); 1046 qla_edif_sess_down(vha, sess); 1047 } 1048 } 1049 1050 /* 1051 * Release the target session for FC Nexus from fabric module code. 1052 */ 1053 if (sess->se_sess != NULL) 1054 ha->tgt.tgt_ops->free_session(sess); 1055 1056 if (logout_started) { 1057 bool traced = false; 1058 u16 cnt = 0; 1059 1060 while (!READ_ONCE(sess->logout_completed)) { 1061 if (!traced) { 1062 ql_dbg(ql_dbg_disc, vha, 0xf086, 1063 "%s: waiting for sess %p logout\n", 1064 __func__, sess); 1065 traced = true; 1066 } 1067 msleep(100); 1068 cnt++; 1069 /* 1070 * Driver timeout is set to 22 Sec, update count value to loop 1071 * long enough for log-out to complete before advancing. Otherwise, 1072 * straddling logout can interfere with re-login attempt. 1073 */ 1074 if (cnt > 230) 1075 break; 1076 } 1077 1078 ql_dbg(ql_dbg_disc, vha, 0xf087, 1079 "%s: sess %p logout completed\n", __func__, sess); 1080 } 1081 1082 if (sess->logo_ack_needed) { 1083 sess->logo_ack_needed = 0; 1084 qla24xx_async_notify_ack(vha, sess, 1085 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1086 } 1087 1088 spin_lock_irqsave(&vha->work_lock, flags); 1089 sess->flags &= ~FCF_ASYNC_SENT; 1090 spin_unlock_irqrestore(&vha->work_lock, flags); 1091 1092 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1093 if (sess->se_sess) { 1094 sess->se_sess = NULL; 1095 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1096 tgt->sess_count--; 1097 } 1098 1099 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1100 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1101 sess->deleted = QLA_SESS_DELETED; 1102 1103 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1104 vha->fcport_count--; 1105 sess->login_succ = 0; 1106 } 1107 1108 qla2x00_clear_loop_id(sess); 1109 1110 if (sess->conflict) { 1111 sess->conflict->login_pause = 0; 1112 sess->conflict = NULL; 1113 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1114 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1115 } 1116 1117 { 1118 struct qlt_plogi_ack_t *con = 1119 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1120 struct imm_ntfy_from_isp *iocb; 1121 1122 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1123 1124 if (con) { 1125 iocb = &con->iocb; 1126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1127 "se_sess %p / sess %p port %8phC is gone," 1128 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1129 sess->se_sess, sess, sess->port_name, 1130 own ? "releasing own PLOGI" : "no own PLOGI pending", 1131 own ? own->ref_count : -1, 1132 iocb->u.isp24.port_name, con->ref_count); 1133 qlt_plogi_ack_unref(vha, con); 1134 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1135 } else { 1136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1137 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1138 sess->se_sess, sess, sess->port_name, 1139 own ? "releasing own PLOGI" : 1140 "no own PLOGI pending", 1141 own ? own->ref_count : -1); 1142 } 1143 1144 if (own) { 1145 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1146 qlt_plogi_ack_unref(vha, own); 1147 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1148 } 1149 } 1150 1151 sess->explicit_logout = 0; 1152 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1153 sess->free_pending = 0; 1154 1155 qla2x00_dfs_remove_rport(vha, sess); 1156 1157 ql_dbg(ql_dbg_disc, vha, 0xf001, 1158 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1159 sess, sess->port_name, vha->fcport_count); 1160 1161 if (tgt && (tgt->sess_count == 0)) 1162 wake_up_all(&tgt->waitQ); 1163 1164 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1165 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1166 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1167 switch (vha->host->active_mode) { 1168 case MODE_INITIATOR: 1169 case MODE_DUAL: 1170 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1171 qla2xxx_wake_dpc(vha); 1172 break; 1173 case MODE_TARGET: 1174 default: 1175 /* no-op */ 1176 break; 1177 } 1178 } 1179 1180 if (vha->fcport_count == 0) 1181 wake_up_all(&vha->fcport_waitQ); 1182 } 1183 1184 /* ha->tgt.sess_lock supposed to be held on entry */ 1185 void qlt_unreg_sess(struct fc_port *sess) 1186 { 1187 struct scsi_qla_host *vha = sess->vha; 1188 unsigned long flags; 1189 1190 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1191 "%s sess %p for deletion %8phC\n", 1192 __func__, sess, sess->port_name); 1193 1194 spin_lock_irqsave(&sess->vha->work_lock, flags); 1195 if (sess->free_pending) { 1196 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1197 return; 1198 } 1199 sess->free_pending = 1; 1200 /* 1201 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1202 * management from being sent. 1203 */ 1204 sess->flags |= FCF_ASYNC_SENT; 1205 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1206 1207 if (sess->se_sess) 1208 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1209 1210 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1211 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1212 sess->last_rscn_gen = sess->rscn_gen; 1213 sess->last_login_gen = sess->login_gen; 1214 1215 queue_work(sess->vha->hw->wq, &sess->free_work); 1216 } 1217 EXPORT_SYMBOL(qlt_unreg_sess); 1218 1219 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1220 { 1221 struct qla_hw_data *ha = vha->hw; 1222 struct fc_port *sess = NULL; 1223 uint16_t loop_id; 1224 int res = 0; 1225 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1226 unsigned long flags; 1227 1228 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1229 if (loop_id == 0xFFFF) { 1230 /* Global event */ 1231 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1232 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1233 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1234 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1235 } else { 1236 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1237 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1238 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1239 } 1240 1241 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1242 "Using sess for qla_tgt_reset: %p\n", sess); 1243 if (!sess) { 1244 res = -ESRCH; 1245 return res; 1246 } 1247 1248 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1249 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1250 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1251 mcmd, loop_id); 1252 1253 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1254 } 1255 1256 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1257 { 1258 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1259 sess->logout_on_delete = 0; 1260 sess->logo_ack_needed = 0; 1261 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1262 } 1263 } 1264 1265 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1266 { 1267 struct qla_tgt *tgt = sess->tgt; 1268 unsigned long flags; 1269 u16 sec; 1270 1271 switch (sess->disc_state) { 1272 case DSC_DELETE_PEND: 1273 return; 1274 case DSC_DELETED: 1275 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1276 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1277 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1278 wake_up_all(&tgt->waitQ); 1279 1280 if (sess->vha->fcport_count == 0) 1281 wake_up_all(&sess->vha->fcport_waitQ); 1282 return; 1283 } 1284 break; 1285 case DSC_UPD_FCPORT: 1286 /* 1287 * This port is not done reporting to upper layer. 1288 * let it finish 1289 */ 1290 sess->next_disc_state = DSC_DELETE_PEND; 1291 sec = jiffies_to_msecs(jiffies - 1292 sess->jiffies_at_registration)/1000; 1293 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1294 sess->sec_since_registration = sec; 1295 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1296 "%s %8phC : Slow Rport registration(%d Sec)\n", 1297 __func__, sess->port_name, sec); 1298 } 1299 return; 1300 default: 1301 break; 1302 } 1303 1304 spin_lock_irqsave(&sess->vha->work_lock, flags); 1305 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1306 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1307 return; 1308 } 1309 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1310 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1311 1312 sess->prli_pend_timer = 0; 1313 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1314 1315 qla24xx_chk_fcp_state(sess); 1316 1317 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1318 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1319 sess, sess->port_name, sess->fc4_type); 1320 1321 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1322 } 1323 1324 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1325 { 1326 struct fc_port *sess; 1327 scsi_qla_host_t *vha = tgt->vha; 1328 1329 list_for_each_entry(sess, &vha->vp_fcports, list) { 1330 if (sess->se_sess) 1331 qlt_schedule_sess_for_deletion(sess); 1332 } 1333 1334 /* At this point tgt could be already dead */ 1335 } 1336 1337 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1338 uint16_t *loop_id) 1339 { 1340 struct qla_hw_data *ha = vha->hw; 1341 dma_addr_t gid_list_dma; 1342 struct gid_list_info *gid_list, *gid; 1343 int res, rc, i; 1344 uint16_t entries; 1345 1346 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1347 &gid_list_dma, GFP_KERNEL); 1348 if (!gid_list) { 1349 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1350 "qla_target(%d): DMA Alloc failed of %u\n", 1351 vha->vp_idx, qla2x00_gid_list_size(ha)); 1352 return -ENOMEM; 1353 } 1354 1355 /* Get list of logged in devices */ 1356 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1357 if (rc != QLA_SUCCESS) { 1358 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1359 "qla_target(%d): get_id_list() failed: %x\n", 1360 vha->vp_idx, rc); 1361 res = -EBUSY; 1362 goto out_free_id_list; 1363 } 1364 1365 gid = gid_list; 1366 res = -ENOENT; 1367 for (i = 0; i < entries; i++) { 1368 if (gid->al_pa == s_id.al_pa && 1369 gid->area == s_id.area && 1370 gid->domain == s_id.domain) { 1371 *loop_id = le16_to_cpu(gid->loop_id); 1372 res = 0; 1373 break; 1374 } 1375 gid = (void *)gid + ha->gid_list_info_size; 1376 } 1377 1378 out_free_id_list: 1379 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1380 gid_list, gid_list_dma); 1381 return res; 1382 } 1383 1384 /* 1385 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1386 * Caller must put it. 1387 */ 1388 static struct fc_port *qlt_create_sess( 1389 struct scsi_qla_host *vha, 1390 fc_port_t *fcport, 1391 bool local) 1392 { 1393 struct qla_hw_data *ha = vha->hw; 1394 struct fc_port *sess = fcport; 1395 unsigned long flags; 1396 1397 if (vha->vha_tgt.qla_tgt->tgt_stop) 1398 return NULL; 1399 1400 if (fcport->se_sess) { 1401 if (!kref_get_unless_zero(&sess->sess_kref)) { 1402 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1403 "%s: kref_get_unless_zero failed for %8phC\n", 1404 __func__, sess->port_name); 1405 return NULL; 1406 } 1407 return fcport; 1408 } 1409 sess->tgt = vha->vha_tgt.qla_tgt; 1410 sess->local = local; 1411 1412 /* 1413 * Under normal circumstances we want to logout from firmware when 1414 * session eventually ends and release corresponding nport handle. 1415 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1416 * code will adjust these flags as necessary. 1417 */ 1418 sess->logout_on_delete = 1; 1419 sess->keep_nport_handle = 0; 1420 sess->logout_completed = 0; 1421 1422 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1423 &fcport->port_name[0], sess) < 0) { 1424 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1425 "(%d) %8phC check_initiator_node_acl failed\n", 1426 vha->vp_idx, fcport->port_name); 1427 return NULL; 1428 } else { 1429 kref_init(&fcport->sess_kref); 1430 /* 1431 * Take an extra reference to ->sess_kref here to handle 1432 * fc_port access across ->tgt.sess_lock reaquire. 1433 */ 1434 if (!kref_get_unless_zero(&sess->sess_kref)) { 1435 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1436 "%s: kref_get_unless_zero failed for %8phC\n", 1437 __func__, sess->port_name); 1438 return NULL; 1439 } 1440 1441 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1442 if (!IS_SW_RESV_ADDR(sess->d_id)) 1443 vha->vha_tgt.qla_tgt->sess_count++; 1444 1445 qlt_do_generation_tick(vha, &sess->generation); 1446 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1447 } 1448 1449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1450 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1451 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1452 vha->vha_tgt.qla_tgt->sess_count); 1453 1454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1455 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1456 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1457 vha->vp_idx, local ? "local " : "", fcport->port_name, 1458 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1459 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1460 1461 return sess; 1462 } 1463 1464 /* 1465 * max_gen - specifies maximum session generation 1466 * at which this deletion requestion is still valid 1467 */ 1468 void 1469 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1470 { 1471 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1472 struct fc_port *sess = fcport; 1473 unsigned long flags; 1474 1475 if (!vha->hw->tgt.tgt_ops) 1476 return; 1477 1478 if (!tgt) 1479 return; 1480 1481 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1482 if (tgt->tgt_stop) { 1483 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1484 return; 1485 } 1486 if (!sess->se_sess) { 1487 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1488 return; 1489 } 1490 1491 if (max_gen - sess->generation < 0) { 1492 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1494 "Ignoring stale deletion request for se_sess %p / sess %p" 1495 " for port %8phC, req_gen %d, sess_gen %d\n", 1496 sess->se_sess, sess, sess->port_name, max_gen, 1497 sess->generation); 1498 return; 1499 } 1500 1501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1502 1503 sess->local = 1; 1504 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1505 qlt_schedule_sess_for_deletion(sess); 1506 } 1507 1508 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1509 { 1510 struct qla_hw_data *ha = tgt->ha; 1511 unsigned long flags; 1512 int res; 1513 /* 1514 * We need to protect against race, when tgt is freed before or 1515 * inside wake_up() 1516 */ 1517 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1518 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1519 "tgt %p, sess_count=%d\n", 1520 tgt, tgt->sess_count); 1521 res = (tgt->sess_count == 0); 1522 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1523 1524 return res; 1525 } 1526 1527 /* Called by tcm_qla2xxx configfs code */ 1528 int qlt_stop_phase1(struct qla_tgt *tgt) 1529 { 1530 struct scsi_qla_host *vha = tgt->vha; 1531 struct qla_hw_data *ha = tgt->ha; 1532 unsigned long flags; 1533 1534 mutex_lock(&ha->optrom_mutex); 1535 mutex_lock(&qla_tgt_mutex); 1536 1537 if (tgt->tgt_stop || tgt->tgt_stopped) { 1538 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1539 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1540 mutex_unlock(&qla_tgt_mutex); 1541 mutex_unlock(&ha->optrom_mutex); 1542 return -EPERM; 1543 } 1544 1545 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1546 vha->host_no, vha); 1547 /* 1548 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1549 * Lock is needed, because we still can get an incoming packet. 1550 */ 1551 mutex_lock(&vha->vha_tgt.tgt_mutex); 1552 tgt->tgt_stop = 1; 1553 qlt_clear_tgt_db(tgt); 1554 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1555 mutex_unlock(&qla_tgt_mutex); 1556 1557 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1558 "Waiting for sess works (tgt %p)", tgt); 1559 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1560 while (!list_empty(&tgt->sess_works_list)) { 1561 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1562 flush_scheduled_work(); 1563 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1564 } 1565 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1566 1567 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1568 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1569 1570 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1571 1572 /* Big hammer */ 1573 if (!ha->flags.host_shutting_down && 1574 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1575 qlt_disable_vha(vha); 1576 1577 /* Wait for sessions to clear out (just in case) */ 1578 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1579 mutex_unlock(&ha->optrom_mutex); 1580 1581 return 0; 1582 } 1583 EXPORT_SYMBOL(qlt_stop_phase1); 1584 1585 /* Called by tcm_qla2xxx configfs code */ 1586 void qlt_stop_phase2(struct qla_tgt *tgt) 1587 { 1588 scsi_qla_host_t *vha = tgt->vha; 1589 1590 if (tgt->tgt_stopped) { 1591 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1592 "Already in tgt->tgt_stopped state\n"); 1593 dump_stack(); 1594 return; 1595 } 1596 if (!tgt->tgt_stop) { 1597 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1598 "%s: phase1 stop is not completed\n", __func__); 1599 dump_stack(); 1600 return; 1601 } 1602 1603 mutex_lock(&tgt->ha->optrom_mutex); 1604 mutex_lock(&vha->vha_tgt.tgt_mutex); 1605 tgt->tgt_stop = 0; 1606 tgt->tgt_stopped = 1; 1607 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1608 mutex_unlock(&tgt->ha->optrom_mutex); 1609 1610 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1611 tgt); 1612 1613 switch (vha->qlini_mode) { 1614 case QLA2XXX_INI_MODE_EXCLUSIVE: 1615 vha->flags.online = 1; 1616 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1617 break; 1618 default: 1619 break; 1620 } 1621 } 1622 EXPORT_SYMBOL(qlt_stop_phase2); 1623 1624 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1625 static void qlt_release(struct qla_tgt *tgt) 1626 { 1627 scsi_qla_host_t *vha = tgt->vha; 1628 void *node; 1629 u64 key = 0; 1630 u16 i; 1631 struct qla_qpair_hint *h; 1632 struct qla_hw_data *ha = vha->hw; 1633 1634 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1635 qlt_stop_phase1(tgt); 1636 1637 if (!tgt->tgt_stopped) 1638 qlt_stop_phase2(tgt); 1639 1640 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1641 unsigned long flags; 1642 1643 h = &tgt->qphints[i]; 1644 if (h->qpair) { 1645 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1646 list_del(&h->hint_elem); 1647 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1648 h->qpair = NULL; 1649 } 1650 } 1651 kfree(tgt->qphints); 1652 mutex_lock(&qla_tgt_mutex); 1653 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1654 mutex_unlock(&qla_tgt_mutex); 1655 1656 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1657 btree_remove64(&tgt->lun_qpair_map, key); 1658 1659 btree_destroy64(&tgt->lun_qpair_map); 1660 1661 if (vha->vp_idx) 1662 if (ha->tgt.tgt_ops && 1663 ha->tgt.tgt_ops->remove_target && 1664 vha->vha_tgt.target_lport_ptr) 1665 ha->tgt.tgt_ops->remove_target(vha); 1666 1667 vha->vha_tgt.qla_tgt = NULL; 1668 1669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1670 "Release of tgt %p finished\n", tgt); 1671 1672 kfree(tgt); 1673 } 1674 1675 /* ha->hardware_lock supposed to be held on entry */ 1676 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1677 const void *param, unsigned int param_size) 1678 { 1679 struct qla_tgt_sess_work_param *prm; 1680 unsigned long flags; 1681 1682 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1683 if (!prm) { 1684 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1685 "qla_target(%d): Unable to create session " 1686 "work, command will be refused", 0); 1687 return -ENOMEM; 1688 } 1689 1690 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1691 "Scheduling work (type %d, prm %p)" 1692 " to find session for param %p (size %d, tgt %p)\n", 1693 type, prm, param, param_size, tgt); 1694 1695 prm->type = type; 1696 memcpy(&prm->tm_iocb, param, param_size); 1697 1698 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1699 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1700 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1701 1702 schedule_work(&tgt->sess_work); 1703 1704 return 0; 1705 } 1706 1707 /* 1708 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1709 */ 1710 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1711 struct imm_ntfy_from_isp *ntfy, 1712 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1713 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1714 { 1715 struct scsi_qla_host *vha = qpair->vha; 1716 struct qla_hw_data *ha = vha->hw; 1717 request_t *pkt; 1718 struct nack_to_isp *nack; 1719 1720 if (!ha->flags.fw_started) 1721 return; 1722 1723 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1724 1725 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1726 if (!pkt) { 1727 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1728 "qla_target(%d): %s failed: unable to allocate " 1729 "request packet\n", vha->vp_idx, __func__); 1730 return; 1731 } 1732 1733 if (vha->vha_tgt.qla_tgt != NULL) 1734 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1735 1736 pkt->entry_type = NOTIFY_ACK_TYPE; 1737 pkt->entry_count = 1; 1738 1739 nack = (struct nack_to_isp *)pkt; 1740 nack->ox_id = ntfy->ox_id; 1741 1742 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1743 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1744 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1745 nack->u.isp24.flags = ntfy->u.isp24.flags & 1746 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1747 } 1748 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1749 nack->u.isp24.status = ntfy->u.isp24.status; 1750 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1751 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1752 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1753 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1754 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1755 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1756 nack->u.isp24.srr_reject_code = srr_reject_code; 1757 nack->u.isp24.srr_reject_code_expl = srr_explan; 1758 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1759 1760 /* TODO qualify this with EDIF enable */ 1761 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1762 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1763 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1764 } 1765 1766 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1767 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1768 vha->vp_idx, nack->u.isp24.status); 1769 1770 /* Memory Barrier */ 1771 wmb(); 1772 qla2x00_start_iocbs(vha, qpair->req); 1773 } 1774 1775 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1776 { 1777 struct scsi_qla_host *vha = mcmd->vha; 1778 struct qla_hw_data *ha = vha->hw; 1779 struct abts_resp_to_24xx *resp; 1780 __le32 f_ctl; 1781 uint32_t h; 1782 uint8_t *p; 1783 int rc; 1784 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1785 struct qla_qpair *qpair = mcmd->qpair; 1786 1787 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1788 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1789 ha, mcmd->fc_tm_rsp); 1790 1791 rc = qlt_check_reserve_free_req(qpair, 1); 1792 if (rc) { 1793 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1794 "qla_target(%d): %s failed: unable to allocate request packet\n", 1795 vha->vp_idx, __func__); 1796 return -EAGAIN; 1797 } 1798 1799 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1800 memset(resp, 0, sizeof(*resp)); 1801 1802 h = qlt_make_handle(qpair); 1803 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1804 /* 1805 * CTIO type 7 from the firmware doesn't provide a way to 1806 * know the initiator's LOOP ID, hence we can't find 1807 * the session and, so, the command. 1808 */ 1809 return -EAGAIN; 1810 } else { 1811 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1812 } 1813 1814 resp->handle = make_handle(qpair->req->id, h); 1815 resp->entry_type = ABTS_RESP_24XX; 1816 resp->entry_count = 1; 1817 resp->nport_handle = abts->nport_handle; 1818 resp->vp_index = vha->vp_idx; 1819 resp->sof_type = abts->sof_type; 1820 resp->exchange_address = abts->exchange_address; 1821 resp->fcp_hdr_le = abts->fcp_hdr_le; 1822 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1823 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1824 F_CTL_SEQ_INITIATIVE); 1825 p = (uint8_t *)&f_ctl; 1826 resp->fcp_hdr_le.f_ctl[0] = *p++; 1827 resp->fcp_hdr_le.f_ctl[1] = *p++; 1828 resp->fcp_hdr_le.f_ctl[2] = *p; 1829 1830 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1831 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1832 1833 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1834 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1835 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1836 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1837 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1838 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1839 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1840 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1841 } else { 1842 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1843 resp->payload.ba_rjt.reason_code = 1844 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1845 /* Other bytes are zero */ 1846 } 1847 1848 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1849 1850 /* Memory Barrier */ 1851 wmb(); 1852 if (qpair->reqq_start_iocbs) 1853 qpair->reqq_start_iocbs(qpair); 1854 else 1855 qla2x00_start_iocbs(vha, qpair->req); 1856 1857 return rc; 1858 } 1859 1860 /* 1861 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1862 */ 1863 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1864 struct abts_recv_from_24xx *abts, uint32_t status, 1865 bool ids_reversed) 1866 { 1867 struct scsi_qla_host *vha = qpair->vha; 1868 struct qla_hw_data *ha = vha->hw; 1869 struct abts_resp_to_24xx *resp; 1870 __le32 f_ctl; 1871 uint8_t *p; 1872 1873 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1874 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1875 ha, abts, status); 1876 1877 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1878 NULL); 1879 if (!resp) { 1880 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1881 "qla_target(%d): %s failed: unable to allocate " 1882 "request packet", vha->vp_idx, __func__); 1883 return; 1884 } 1885 1886 resp->entry_type = ABTS_RESP_24XX; 1887 resp->handle = QLA_TGT_SKIP_HANDLE; 1888 resp->entry_count = 1; 1889 resp->nport_handle = abts->nport_handle; 1890 resp->vp_index = vha->vp_idx; 1891 resp->sof_type = abts->sof_type; 1892 resp->exchange_address = abts->exchange_address; 1893 resp->fcp_hdr_le = abts->fcp_hdr_le; 1894 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1895 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1896 F_CTL_SEQ_INITIATIVE); 1897 p = (uint8_t *)&f_ctl; 1898 resp->fcp_hdr_le.f_ctl[0] = *p++; 1899 resp->fcp_hdr_le.f_ctl[1] = *p++; 1900 resp->fcp_hdr_le.f_ctl[2] = *p; 1901 if (ids_reversed) { 1902 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1903 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1904 } else { 1905 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1906 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1907 } 1908 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1909 if (status == FCP_TMF_CMPL) { 1910 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1911 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1912 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1913 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1914 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1915 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1916 } else { 1917 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1918 resp->payload.ba_rjt.reason_code = 1919 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1920 /* Other bytes are zero */ 1921 } 1922 1923 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1924 1925 /* Memory Barrier */ 1926 wmb(); 1927 if (qpair->reqq_start_iocbs) 1928 qpair->reqq_start_iocbs(qpair); 1929 else 1930 qla2x00_start_iocbs(vha, qpair->req); 1931 } 1932 1933 /* 1934 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1935 */ 1936 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1937 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1938 { 1939 struct ctio7_to_24xx *ctio; 1940 u16 tmp; 1941 struct abts_recv_from_24xx *entry; 1942 1943 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1944 if (ctio == NULL) { 1945 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1946 "qla_target(%d): %s failed: unable to allocate " 1947 "request packet\n", vha->vp_idx, __func__); 1948 return; 1949 } 1950 1951 if (mcmd) 1952 /* abts from remote port */ 1953 entry = &mcmd->orig_iocb.abts; 1954 else 1955 /* abts from this driver. */ 1956 entry = (struct abts_recv_from_24xx *)pkt; 1957 1958 /* 1959 * We've got on entrance firmware's response on by us generated 1960 * ABTS response. So, in it ID fields are reversed. 1961 */ 1962 1963 ctio->entry_type = CTIO_TYPE7; 1964 ctio->entry_count = 1; 1965 ctio->nport_handle = entry->nport_handle; 1966 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1967 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1968 ctio->vp_index = vha->vp_idx; 1969 ctio->exchange_addr = entry->exchange_addr_to_abort; 1970 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1971 1972 if (mcmd) { 1973 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1974 1975 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1976 tmp |= (mcmd->abort_io_attr << 9); 1977 else if (qpair->retry_term_cnt & 1) 1978 tmp |= (0x4 << 9); 1979 } else { 1980 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1981 1982 if (qpair->retry_term_cnt & 1) 1983 tmp |= (0x4 << 9); 1984 } 1985 ctio->u.status1.flags = cpu_to_le16(tmp); 1986 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1987 1988 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1989 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1990 le16_to_cpu(ctio->u.status1.flags), 1991 le16_to_cpu(ctio->u.status1.ox_id), 1992 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1993 1994 /* Memory Barrier */ 1995 wmb(); 1996 if (qpair->reqq_start_iocbs) 1997 qpair->reqq_start_iocbs(qpair); 1998 else 1999 qla2x00_start_iocbs(vha, qpair->req); 2000 2001 if (mcmd) 2002 qlt_build_abts_resp_iocb(mcmd); 2003 else 2004 qlt_24xx_send_abts_resp(qpair, 2005 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2006 2007 } 2008 2009 /* drop cmds for the given lun 2010 * XXX only looks for cmds on the port through which lun reset was recieved 2011 * XXX does not go through the list of other port (which may have cmds 2012 * for the same lun) 2013 */ 2014 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2015 { 2016 struct qla_tgt_sess_op *op; 2017 struct qla_tgt_cmd *cmd; 2018 uint32_t key; 2019 unsigned long flags; 2020 2021 key = sid_to_key(s_id); 2022 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2023 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2024 uint32_t op_key; 2025 u64 op_lun; 2026 2027 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2028 op_lun = scsilun_to_int( 2029 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2030 if (op_key == key && op_lun == lun) 2031 op->aborted = true; 2032 } 2033 2034 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2035 uint32_t cmd_key; 2036 u64 cmd_lun; 2037 2038 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2039 cmd_lun = scsilun_to_int( 2040 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2041 if (cmd_key == key && cmd_lun == lun) 2042 cmd->aborted = 1; 2043 } 2044 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2045 } 2046 2047 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2048 uint64_t unpacked_lun) 2049 { 2050 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2051 struct qla_qpair_hint *h = NULL; 2052 2053 if (vha->flags.qpairs_available) { 2054 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2055 if (!h) 2056 h = &tgt->qphints[0]; 2057 } else { 2058 h = &tgt->qphints[0]; 2059 } 2060 2061 return h; 2062 } 2063 2064 static void qlt_do_tmr_work(struct work_struct *work) 2065 { 2066 struct qla_tgt_mgmt_cmd *mcmd = 2067 container_of(work, struct qla_tgt_mgmt_cmd, work); 2068 struct qla_hw_data *ha = mcmd->vha->hw; 2069 int rc; 2070 uint32_t tag; 2071 unsigned long flags; 2072 2073 switch (mcmd->tmr_func) { 2074 case QLA_TGT_ABTS: 2075 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2076 break; 2077 default: 2078 tag = 0; 2079 break; 2080 } 2081 2082 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2083 mcmd->tmr_func, tag); 2084 2085 if (rc != 0) { 2086 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2087 switch (mcmd->tmr_func) { 2088 case QLA_TGT_ABTS: 2089 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2090 qlt_build_abts_resp_iocb(mcmd); 2091 break; 2092 case QLA_TGT_LUN_RESET: 2093 case QLA_TGT_CLEAR_TS: 2094 case QLA_TGT_ABORT_TS: 2095 case QLA_TGT_CLEAR_ACA: 2096 case QLA_TGT_TARGET_RESET: 2097 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2098 qla_sam_status); 2099 break; 2100 2101 case QLA_TGT_ABORT_ALL: 2102 case QLA_TGT_NEXUS_LOSS_SESS: 2103 case QLA_TGT_NEXUS_LOSS: 2104 qlt_send_notify_ack(mcmd->qpair, 2105 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2106 break; 2107 } 2108 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2109 2110 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2111 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2112 mcmd->vha->vp_idx, rc); 2113 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2114 } 2115 } 2116 2117 /* ha->hardware_lock supposed to be held on entry */ 2118 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2119 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2120 { 2121 struct qla_hw_data *ha = vha->hw; 2122 struct qla_tgt_mgmt_cmd *mcmd; 2123 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2124 struct qla_tgt_cmd *abort_cmd; 2125 2126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2127 "qla_target(%d): task abort (tag=%d)\n", 2128 vha->vp_idx, abts->exchange_addr_to_abort); 2129 2130 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2131 if (mcmd == NULL) { 2132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2133 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2134 vha->vp_idx, __func__); 2135 return -ENOMEM; 2136 } 2137 memset(mcmd, 0, sizeof(*mcmd)); 2138 mcmd->cmd_type = TYPE_TGT_TMCMD; 2139 mcmd->sess = sess; 2140 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2141 mcmd->reset_count = ha->base_qpair->chip_reset; 2142 mcmd->tmr_func = QLA_TGT_ABTS; 2143 mcmd->qpair = h->qpair; 2144 mcmd->vha = vha; 2145 2146 /* 2147 * LUN is looked up by target-core internally based on the passed 2148 * abts->exchange_addr_to_abort tag. 2149 */ 2150 mcmd->se_cmd.cpuid = h->cpuid; 2151 2152 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2153 le32_to_cpu(abts->exchange_addr_to_abort)); 2154 if (!abort_cmd) 2155 return -EIO; 2156 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2157 2158 if (abort_cmd->qpair) { 2159 mcmd->qpair = abort_cmd->qpair; 2160 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2161 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2162 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2163 } 2164 2165 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2166 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2167 2168 return 0; 2169 } 2170 2171 /* 2172 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2173 */ 2174 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2175 struct abts_recv_from_24xx *abts) 2176 { 2177 struct qla_hw_data *ha = vha->hw; 2178 struct fc_port *sess; 2179 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2180 be_id_t s_id; 2181 int rc; 2182 unsigned long flags; 2183 2184 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2185 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2186 "qla_target(%d): ABTS: Abort Sequence not " 2187 "supported\n", vha->vp_idx); 2188 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2189 false); 2190 return; 2191 } 2192 2193 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2195 "qla_target(%d): ABTS: Unknown Exchange " 2196 "Address received\n", vha->vp_idx); 2197 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2198 false); 2199 return; 2200 } 2201 2202 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2203 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2204 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2205 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2206 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2207 2208 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2209 2210 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2211 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2212 if (!sess) { 2213 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2214 "qla_target(%d): task abort for non-existent session\n", 2215 vha->vp_idx); 2216 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2217 2218 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2219 false); 2220 return; 2221 } 2222 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2223 2224 2225 if (sess->deleted) { 2226 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2227 false); 2228 return; 2229 } 2230 2231 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2232 if (rc != 0) { 2233 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2234 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2235 vha->vp_idx, rc); 2236 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2237 false); 2238 return; 2239 } 2240 } 2241 2242 /* 2243 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2244 */ 2245 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2246 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2247 { 2248 struct scsi_qla_host *ha = mcmd->vha; 2249 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2250 struct ctio7_to_24xx *ctio; 2251 uint16_t temp; 2252 2253 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2254 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2255 ha, atio, resp_code); 2256 2257 2258 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2259 if (ctio == NULL) { 2260 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2261 "qla_target(%d): %s failed: unable to allocate " 2262 "request packet\n", ha->vp_idx, __func__); 2263 return; 2264 } 2265 2266 ctio->entry_type = CTIO_TYPE7; 2267 ctio->entry_count = 1; 2268 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2269 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2270 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2271 ctio->vp_index = ha->vp_idx; 2272 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2273 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2274 temp = (atio->u.isp24.attr << 9)| 2275 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2276 ctio->u.status1.flags = cpu_to_le16(temp); 2277 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2278 ctio->u.status1.ox_id = cpu_to_le16(temp); 2279 ctio->u.status1.scsi_status = 2280 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2281 ctio->u.status1.response_len = cpu_to_le16(8); 2282 ctio->u.status1.sense_data[0] = resp_code; 2283 2284 /* Memory Barrier */ 2285 wmb(); 2286 if (qpair->reqq_start_iocbs) 2287 qpair->reqq_start_iocbs(qpair); 2288 else 2289 qla2x00_start_iocbs(ha, qpair->req); 2290 } 2291 2292 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2293 { 2294 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2295 } 2296 EXPORT_SYMBOL(qlt_free_mcmd); 2297 2298 /* 2299 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2300 * reacquire 2301 */ 2302 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2303 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2304 { 2305 struct atio_from_isp *atio = &cmd->atio; 2306 struct ctio7_to_24xx *ctio; 2307 uint16_t temp; 2308 struct scsi_qla_host *vha = cmd->vha; 2309 2310 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2311 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2312 "sense_key=%02x, asc=%02x, ascq=%02x", 2313 vha, atio, scsi_status, sense_key, asc, ascq); 2314 2315 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2316 if (!ctio) { 2317 ql_dbg(ql_dbg_async, vha, 0x3067, 2318 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2319 vha->host_no, __func__); 2320 goto out; 2321 } 2322 2323 ctio->entry_type = CTIO_TYPE7; 2324 ctio->entry_count = 1; 2325 ctio->handle = QLA_TGT_SKIP_HANDLE; 2326 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2327 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2328 ctio->vp_index = vha->vp_idx; 2329 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2330 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2331 temp = (atio->u.isp24.attr << 9) | 2332 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2333 ctio->u.status1.flags = cpu_to_le16(temp); 2334 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2335 ctio->u.status1.ox_id = cpu_to_le16(temp); 2336 ctio->u.status1.scsi_status = 2337 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2338 ctio->u.status1.response_len = cpu_to_le16(18); 2339 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2340 2341 if (ctio->u.status1.residual != 0) 2342 ctio->u.status1.scsi_status |= 2343 cpu_to_le16(SS_RESIDUAL_UNDER); 2344 2345 /* Fixed format sense data. */ 2346 ctio->u.status1.sense_data[0] = 0x70; 2347 ctio->u.status1.sense_data[2] = sense_key; 2348 /* Additional sense length */ 2349 ctio->u.status1.sense_data[7] = 0xa; 2350 /* ASC and ASCQ */ 2351 ctio->u.status1.sense_data[12] = asc; 2352 ctio->u.status1.sense_data[13] = ascq; 2353 2354 /* Memory Barrier */ 2355 wmb(); 2356 2357 if (qpair->reqq_start_iocbs) 2358 qpair->reqq_start_iocbs(qpair); 2359 else 2360 qla2x00_start_iocbs(vha, qpair->req); 2361 2362 out: 2363 return; 2364 } 2365 2366 /* callback from target fabric module code */ 2367 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2368 { 2369 struct scsi_qla_host *vha = mcmd->sess->vha; 2370 struct qla_hw_data *ha = vha->hw; 2371 unsigned long flags; 2372 struct qla_qpair *qpair = mcmd->qpair; 2373 bool free_mcmd = true; 2374 2375 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2376 "TM response mcmd (%p) status %#x state %#x", 2377 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2378 2379 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2380 2381 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2382 /* 2383 * Either the port is not online or this request was from 2384 * previous life, just abort the processing. 2385 */ 2386 ql_dbg(ql_dbg_async, vha, 0xe100, 2387 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2388 vha->flags.online, qla2x00_reset_active(vha), 2389 mcmd->reset_count, qpair->chip_reset); 2390 ha->tgt.tgt_ops->free_mcmd(mcmd); 2391 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2392 return; 2393 } 2394 2395 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2396 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2397 case ELS_LOGO: 2398 case ELS_PRLO: 2399 case ELS_TPRLO: 2400 ql_dbg(ql_dbg_disc, vha, 0x2106, 2401 "TM response logo %8phC status %#x state %#x", 2402 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2403 mcmd->flags); 2404 qlt_schedule_sess_for_deletion(mcmd->sess); 2405 break; 2406 default: 2407 qlt_send_notify_ack(vha->hw->base_qpair, 2408 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2409 break; 2410 } 2411 } else { 2412 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2413 qlt_build_abts_resp_iocb(mcmd); 2414 free_mcmd = false; 2415 } else 2416 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2417 mcmd->fc_tm_rsp); 2418 } 2419 /* 2420 * Make the callback for ->free_mcmd() to queue_work() and invoke 2421 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2422 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2423 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2424 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2425 * qlt_xmit_tm_rsp() returns here.. 2426 */ 2427 if (free_mcmd) 2428 ha->tgt.tgt_ops->free_mcmd(mcmd); 2429 2430 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2431 } 2432 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2433 2434 /* No locks */ 2435 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2436 { 2437 struct qla_tgt_cmd *cmd = prm->cmd; 2438 2439 BUG_ON(cmd->sg_cnt == 0); 2440 2441 prm->sg = (struct scatterlist *)cmd->sg; 2442 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2443 cmd->sg_cnt, cmd->dma_data_direction); 2444 if (unlikely(prm->seg_cnt == 0)) 2445 goto out_err; 2446 2447 prm->cmd->sg_mapped = 1; 2448 2449 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2450 /* 2451 * If greater than four sg entries then we need to allocate 2452 * the continuation entries 2453 */ 2454 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2455 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2456 QLA_TGT_DATASEGS_PER_CMD_24XX, 2457 QLA_TGT_DATASEGS_PER_CONT_24XX); 2458 } else { 2459 /* DIF */ 2460 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2461 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2462 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2463 prm->tot_dsds = prm->seg_cnt; 2464 } else 2465 prm->tot_dsds = prm->seg_cnt; 2466 2467 if (cmd->prot_sg_cnt) { 2468 prm->prot_sg = cmd->prot_sg; 2469 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2470 cmd->prot_sg, cmd->prot_sg_cnt, 2471 cmd->dma_data_direction); 2472 if (unlikely(prm->prot_seg_cnt == 0)) 2473 goto out_err; 2474 2475 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2476 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2477 /* Dif Bundling not support here */ 2478 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2479 cmd->blk_sz); 2480 prm->tot_dsds += prm->prot_seg_cnt; 2481 } else 2482 prm->tot_dsds += prm->prot_seg_cnt; 2483 } 2484 } 2485 2486 return 0; 2487 2488 out_err: 2489 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2490 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2491 0, prm->cmd->sg_cnt); 2492 return -1; 2493 } 2494 2495 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2496 { 2497 struct qla_hw_data *ha; 2498 struct qla_qpair *qpair; 2499 2500 if (!cmd->sg_mapped) 2501 return; 2502 2503 qpair = cmd->qpair; 2504 2505 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2506 cmd->dma_data_direction); 2507 cmd->sg_mapped = 0; 2508 2509 if (cmd->prot_sg_cnt) 2510 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2511 cmd->dma_data_direction); 2512 2513 if (!cmd->ctx) 2514 return; 2515 ha = vha->hw; 2516 if (cmd->ctx_dsd_alloced) 2517 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2518 2519 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2520 } 2521 2522 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2523 uint32_t req_cnt) 2524 { 2525 uint32_t cnt; 2526 struct req_que *req = qpair->req; 2527 2528 if (req->cnt < (req_cnt + 2)) { 2529 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2530 rd_reg_dword_relaxed(req->req_q_out)); 2531 2532 if (req->ring_index < cnt) 2533 req->cnt = cnt - req->ring_index; 2534 else 2535 req->cnt = req->length - (req->ring_index - cnt); 2536 2537 if (unlikely(req->cnt < (req_cnt + 2))) 2538 return -EAGAIN; 2539 } 2540 2541 req->cnt -= req_cnt; 2542 2543 return 0; 2544 } 2545 2546 /* 2547 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2548 */ 2549 static inline void *qlt_get_req_pkt(struct req_que *req) 2550 { 2551 /* Adjust ring index. */ 2552 req->ring_index++; 2553 if (req->ring_index == req->length) { 2554 req->ring_index = 0; 2555 req->ring_ptr = req->ring; 2556 } else { 2557 req->ring_ptr++; 2558 } 2559 return (cont_entry_t *)req->ring_ptr; 2560 } 2561 2562 /* ha->hardware_lock supposed to be held on entry */ 2563 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2564 { 2565 uint32_t h; 2566 int index; 2567 uint8_t found = 0; 2568 struct req_que *req = qpair->req; 2569 2570 h = req->current_outstanding_cmd; 2571 2572 for (index = 1; index < req->num_outstanding_cmds; index++) { 2573 h++; 2574 if (h == req->num_outstanding_cmds) 2575 h = 1; 2576 2577 if (h == QLA_TGT_SKIP_HANDLE) 2578 continue; 2579 2580 if (!req->outstanding_cmds[h]) { 2581 found = 1; 2582 break; 2583 } 2584 } 2585 2586 if (found) { 2587 req->current_outstanding_cmd = h; 2588 } else { 2589 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2590 "qla_target(%d): Ran out of empty cmd slots\n", 2591 qpair->vha->vp_idx); 2592 h = QLA_TGT_NULL_HANDLE; 2593 } 2594 2595 return h; 2596 } 2597 2598 /* ha->hardware_lock supposed to be held on entry */ 2599 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2600 struct qla_tgt_prm *prm) 2601 { 2602 uint32_t h; 2603 struct ctio7_to_24xx *pkt; 2604 struct atio_from_isp *atio = &prm->cmd->atio; 2605 uint16_t temp; 2606 struct qla_tgt_cmd *cmd = prm->cmd; 2607 2608 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2609 prm->pkt = pkt; 2610 memset(pkt, 0, sizeof(*pkt)); 2611 2612 pkt->entry_type = CTIO_TYPE7; 2613 pkt->entry_count = (uint8_t)prm->req_cnt; 2614 pkt->vp_index = prm->cmd->vp_idx; 2615 2616 h = qlt_make_handle(qpair); 2617 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2618 /* 2619 * CTIO type 7 from the firmware doesn't provide a way to 2620 * know the initiator's LOOP ID, hence we can't find 2621 * the session and, so, the command. 2622 */ 2623 return -EAGAIN; 2624 } else 2625 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2626 2627 pkt->handle = make_handle(qpair->req->id, h); 2628 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2629 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2630 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2631 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2632 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2633 temp = atio->u.isp24.attr << 9; 2634 pkt->u.status0.flags |= cpu_to_le16(temp); 2635 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2636 pkt->u.status0.ox_id = cpu_to_le16(temp); 2637 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2638 2639 if (cmd->edif) { 2640 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2641 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2642 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2643 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2644 2645 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2646 } 2647 2648 return 0; 2649 } 2650 2651 /* 2652 * ha->hardware_lock supposed to be held on entry. We have already made sure 2653 * that there is sufficient amount of request entries to not drop it. 2654 */ 2655 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2656 { 2657 int cnt; 2658 struct dsd64 *cur_dsd; 2659 2660 /* Build continuation packets */ 2661 while (prm->seg_cnt > 0) { 2662 cont_a64_entry_t *cont_pkt64 = 2663 (cont_a64_entry_t *)qlt_get_req_pkt( 2664 prm->cmd->qpair->req); 2665 2666 /* 2667 * Make sure that from cont_pkt64 none of 2668 * 64-bit specific fields used for 32-bit 2669 * addressing. Cast to (cont_entry_t *) for 2670 * that. 2671 */ 2672 2673 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2674 2675 cont_pkt64->entry_count = 1; 2676 cont_pkt64->sys_define = 0; 2677 2678 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2679 cur_dsd = cont_pkt64->dsd; 2680 2681 /* Load continuation entry data segments */ 2682 for (cnt = 0; 2683 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2684 cnt++, prm->seg_cnt--) { 2685 append_dsd64(&cur_dsd, prm->sg); 2686 prm->sg = sg_next(prm->sg); 2687 } 2688 } 2689 } 2690 2691 /* 2692 * ha->hardware_lock supposed to be held on entry. We have already made sure 2693 * that there is sufficient amount of request entries to not drop it. 2694 */ 2695 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2696 { 2697 int cnt; 2698 struct dsd64 *cur_dsd; 2699 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2700 2701 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2702 2703 /* Setup packet address segment pointer */ 2704 cur_dsd = &pkt24->u.status0.dsd; 2705 2706 /* Set total data segment count */ 2707 if (prm->seg_cnt) 2708 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2709 2710 if (prm->seg_cnt == 0) { 2711 /* No data transfer */ 2712 cur_dsd->address = 0; 2713 cur_dsd->length = 0; 2714 return; 2715 } 2716 2717 /* If scatter gather */ 2718 2719 /* Load command entry data segments */ 2720 for (cnt = 0; 2721 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2722 cnt++, prm->seg_cnt--) { 2723 append_dsd64(&cur_dsd, prm->sg); 2724 prm->sg = sg_next(prm->sg); 2725 } 2726 2727 qlt_load_cont_data_segments(prm); 2728 } 2729 2730 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2731 { 2732 return cmd->bufflen > 0; 2733 } 2734 2735 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2736 { 2737 struct qla_tgt_cmd *cmd; 2738 struct scsi_qla_host *vha; 2739 2740 /* asc 0x10=dif error */ 2741 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2742 cmd = prm->cmd; 2743 vha = cmd->vha; 2744 /* ASCQ */ 2745 switch (prm->sense_buffer[13]) { 2746 case 1: 2747 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2748 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2749 "se_cmd=%p tag[%x]", 2750 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2751 cmd->atio.u.isp24.exchange_addr); 2752 break; 2753 case 2: 2754 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2755 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2756 "se_cmd=%p tag[%x]", 2757 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2758 cmd->atio.u.isp24.exchange_addr); 2759 break; 2760 case 3: 2761 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2762 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2763 "se_cmd=%p tag[%x]", 2764 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2765 cmd->atio.u.isp24.exchange_addr); 2766 break; 2767 default: 2768 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2769 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2770 "se_cmd=%p tag[%x]", 2771 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2772 cmd->atio.u.isp24.exchange_addr); 2773 break; 2774 } 2775 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2776 } 2777 } 2778 2779 /* 2780 * Called without ha->hardware_lock held 2781 */ 2782 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2783 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2784 uint32_t *full_req_cnt) 2785 { 2786 struct se_cmd *se_cmd = &cmd->se_cmd; 2787 struct qla_qpair *qpair = cmd->qpair; 2788 2789 prm->cmd = cmd; 2790 prm->tgt = cmd->tgt; 2791 prm->pkt = NULL; 2792 prm->rq_result = scsi_status; 2793 prm->sense_buffer = &cmd->sense_buffer[0]; 2794 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2795 prm->sg = NULL; 2796 prm->seg_cnt = -1; 2797 prm->req_cnt = 1; 2798 prm->residual = 0; 2799 prm->add_status_pkt = 0; 2800 prm->prot_sg = NULL; 2801 prm->prot_seg_cnt = 0; 2802 prm->tot_dsds = 0; 2803 2804 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2805 if (qlt_pci_map_calc_cnt(prm) != 0) 2806 return -EAGAIN; 2807 } 2808 2809 *full_req_cnt = prm->req_cnt; 2810 2811 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2812 prm->residual = se_cmd->residual_count; 2813 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2814 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2815 prm->residual, se_cmd->tag, 2816 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2817 cmd->bufflen, prm->rq_result); 2818 prm->rq_result |= SS_RESIDUAL_UNDER; 2819 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2820 prm->residual = se_cmd->residual_count; 2821 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2822 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2823 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2824 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2825 prm->rq_result |= SS_RESIDUAL_OVER; 2826 } 2827 2828 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2829 /* 2830 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2831 * ignored in *xmit_response() below 2832 */ 2833 if (qlt_has_data(cmd)) { 2834 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2835 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2836 (prm->rq_result != 0))) { 2837 prm->add_status_pkt = 1; 2838 (*full_req_cnt)++; 2839 } 2840 } 2841 } 2842 2843 return 0; 2844 } 2845 2846 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2847 int sending_sense) 2848 { 2849 if (cmd->qpair->enable_class_2) 2850 return 0; 2851 2852 if (sending_sense) 2853 return cmd->conf_compl_supported; 2854 else 2855 return cmd->qpair->enable_explicit_conf && 2856 cmd->conf_compl_supported; 2857 } 2858 2859 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2860 struct qla_tgt_prm *prm) 2861 { 2862 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2863 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2864 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2865 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2866 ctio->u.status0.flags |= cpu_to_le16( 2867 CTIO7_FLAGS_EXPLICIT_CONFORM | 2868 CTIO7_FLAGS_CONFORM_REQ); 2869 } 2870 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2871 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2872 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2873 int i; 2874 2875 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2876 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2877 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2878 "Skipping EXPLICIT_CONFORM and " 2879 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2880 "non GOOD status\n"); 2881 goto skip_explict_conf; 2882 } 2883 ctio->u.status1.flags |= cpu_to_le16( 2884 CTIO7_FLAGS_EXPLICIT_CONFORM | 2885 CTIO7_FLAGS_CONFORM_REQ); 2886 } 2887 skip_explict_conf: 2888 ctio->u.status1.flags &= 2889 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2890 ctio->u.status1.flags |= 2891 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2892 ctio->u.status1.scsi_status |= 2893 cpu_to_le16(SS_SENSE_LEN_VALID); 2894 ctio->u.status1.sense_length = 2895 cpu_to_le16(prm->sense_buffer_len); 2896 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2897 uint32_t v; 2898 2899 v = get_unaligned_be32( 2900 &((uint32_t *)prm->sense_buffer)[i]); 2901 put_unaligned_le32(v, 2902 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2903 } 2904 qlt_print_dif_err(prm); 2905 2906 } else { 2907 ctio->u.status1.flags &= 2908 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2909 ctio->u.status1.flags |= 2910 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2911 ctio->u.status1.sense_length = 0; 2912 memset(ctio->u.status1.sense_data, 0, 2913 sizeof(ctio->u.status1.sense_data)); 2914 } 2915 2916 /* Sense with len > 24, is it possible ??? */ 2917 } 2918 2919 static inline int 2920 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2921 { 2922 switch (se_cmd->prot_op) { 2923 case TARGET_PROT_DOUT_INSERT: 2924 case TARGET_PROT_DIN_STRIP: 2925 if (ql2xenablehba_err_chk >= 1) 2926 return 1; 2927 break; 2928 case TARGET_PROT_DOUT_PASS: 2929 case TARGET_PROT_DIN_PASS: 2930 if (ql2xenablehba_err_chk >= 2) 2931 return 1; 2932 break; 2933 case TARGET_PROT_DIN_INSERT: 2934 case TARGET_PROT_DOUT_STRIP: 2935 return 1; 2936 default: 2937 break; 2938 } 2939 return 0; 2940 } 2941 2942 static inline int 2943 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2944 { 2945 switch (se_cmd->prot_op) { 2946 case TARGET_PROT_DIN_INSERT: 2947 case TARGET_PROT_DOUT_INSERT: 2948 case TARGET_PROT_DIN_STRIP: 2949 case TARGET_PROT_DOUT_STRIP: 2950 case TARGET_PROT_DIN_PASS: 2951 case TARGET_PROT_DOUT_PASS: 2952 return 1; 2953 default: 2954 return 0; 2955 } 2956 return 0; 2957 } 2958 2959 /* 2960 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2961 */ 2962 static void 2963 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2964 uint16_t *pfw_prot_opts) 2965 { 2966 struct se_cmd *se_cmd = &cmd->se_cmd; 2967 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2968 scsi_qla_host_t *vha = cmd->tgt->vha; 2969 struct qla_hw_data *ha = vha->hw; 2970 uint32_t t32 = 0; 2971 2972 /* 2973 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2974 * have been immplemented by TCM, before AppTag is avail. 2975 * Look for modesense_handlers[] 2976 */ 2977 ctx->app_tag = 0; 2978 ctx->app_tag_mask[0] = 0x0; 2979 ctx->app_tag_mask[1] = 0x0; 2980 2981 if (IS_PI_UNINIT_CAPABLE(ha)) { 2982 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2983 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2984 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2985 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2986 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2987 } 2988 2989 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2990 2991 switch (se_cmd->prot_type) { 2992 case TARGET_DIF_TYPE0_PROT: 2993 /* 2994 * No check for ql2xenablehba_err_chk, as it 2995 * would be an I/O error if hba tag generation 2996 * is not done. 2997 */ 2998 ctx->ref_tag = cpu_to_le32(lba); 2999 /* enable ALL bytes of the ref tag */ 3000 ctx->ref_tag_mask[0] = 0xff; 3001 ctx->ref_tag_mask[1] = 0xff; 3002 ctx->ref_tag_mask[2] = 0xff; 3003 ctx->ref_tag_mask[3] = 0xff; 3004 break; 3005 case TARGET_DIF_TYPE1_PROT: 3006 /* 3007 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3008 * REF tag, and 16 bit app tag. 3009 */ 3010 ctx->ref_tag = cpu_to_le32(lba); 3011 if (!qla_tgt_ref_mask_check(se_cmd) || 3012 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3013 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3014 break; 3015 } 3016 /* enable ALL bytes of the ref tag */ 3017 ctx->ref_tag_mask[0] = 0xff; 3018 ctx->ref_tag_mask[1] = 0xff; 3019 ctx->ref_tag_mask[2] = 0xff; 3020 ctx->ref_tag_mask[3] = 0xff; 3021 break; 3022 case TARGET_DIF_TYPE2_PROT: 3023 /* 3024 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3025 * tag has to match LBA in CDB + N 3026 */ 3027 ctx->ref_tag = cpu_to_le32(lba); 3028 if (!qla_tgt_ref_mask_check(se_cmd) || 3029 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3030 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3031 break; 3032 } 3033 /* enable ALL bytes of the ref tag */ 3034 ctx->ref_tag_mask[0] = 0xff; 3035 ctx->ref_tag_mask[1] = 0xff; 3036 ctx->ref_tag_mask[2] = 0xff; 3037 ctx->ref_tag_mask[3] = 0xff; 3038 break; 3039 case TARGET_DIF_TYPE3_PROT: 3040 /* For TYPE 3 protection: 16 bit GUARD only */ 3041 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3042 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3043 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3044 break; 3045 } 3046 } 3047 3048 static inline int 3049 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3050 { 3051 struct dsd64 *cur_dsd; 3052 uint32_t transfer_length = 0; 3053 uint32_t data_bytes; 3054 uint32_t dif_bytes; 3055 uint8_t bundling = 1; 3056 struct crc_context *crc_ctx_pkt = NULL; 3057 struct qla_hw_data *ha; 3058 struct ctio_crc2_to_fw *pkt; 3059 dma_addr_t crc_ctx_dma; 3060 uint16_t fw_prot_opts = 0; 3061 struct qla_tgt_cmd *cmd = prm->cmd; 3062 struct se_cmd *se_cmd = &cmd->se_cmd; 3063 uint32_t h; 3064 struct atio_from_isp *atio = &prm->cmd->atio; 3065 struct qla_tc_param tc; 3066 uint16_t t16; 3067 scsi_qla_host_t *vha = cmd->vha; 3068 3069 ha = vha->hw; 3070 3071 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3072 prm->pkt = pkt; 3073 memset(pkt, 0, sizeof(*pkt)); 3074 3075 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3076 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3077 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3078 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3079 3080 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3081 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3082 bundling = 0; 3083 3084 /* Compute dif len and adjust data len to incude protection */ 3085 data_bytes = cmd->bufflen; 3086 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3087 3088 switch (se_cmd->prot_op) { 3089 case TARGET_PROT_DIN_INSERT: 3090 case TARGET_PROT_DOUT_STRIP: 3091 transfer_length = data_bytes; 3092 if (cmd->prot_sg_cnt) 3093 data_bytes += dif_bytes; 3094 break; 3095 case TARGET_PROT_DIN_STRIP: 3096 case TARGET_PROT_DOUT_INSERT: 3097 case TARGET_PROT_DIN_PASS: 3098 case TARGET_PROT_DOUT_PASS: 3099 transfer_length = data_bytes + dif_bytes; 3100 break; 3101 default: 3102 BUG(); 3103 break; 3104 } 3105 3106 if (!qlt_hba_err_chk_enabled(se_cmd)) 3107 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3108 /* HBA error checking enabled */ 3109 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3110 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3111 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3112 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3113 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3114 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3115 } 3116 3117 switch (se_cmd->prot_op) { 3118 case TARGET_PROT_DIN_INSERT: 3119 case TARGET_PROT_DOUT_INSERT: 3120 fw_prot_opts |= PO_MODE_DIF_INSERT; 3121 break; 3122 case TARGET_PROT_DIN_STRIP: 3123 case TARGET_PROT_DOUT_STRIP: 3124 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3125 break; 3126 case TARGET_PROT_DIN_PASS: 3127 case TARGET_PROT_DOUT_PASS: 3128 fw_prot_opts |= PO_MODE_DIF_PASS; 3129 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3130 break; 3131 default:/* Normal Request */ 3132 fw_prot_opts |= PO_MODE_DIF_PASS; 3133 break; 3134 } 3135 3136 /* ---- PKT ---- */ 3137 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3138 pkt->entry_type = CTIO_CRC2; 3139 pkt->entry_count = 1; 3140 pkt->vp_index = cmd->vp_idx; 3141 3142 h = qlt_make_handle(qpair); 3143 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3144 /* 3145 * CTIO type 7 from the firmware doesn't provide a way to 3146 * know the initiator's LOOP ID, hence we can't find 3147 * the session and, so, the command. 3148 */ 3149 return -EAGAIN; 3150 } else 3151 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3152 3153 pkt->handle = make_handle(qpair->req->id, h); 3154 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3155 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3156 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3157 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3158 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3159 3160 /* silence compile warning */ 3161 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3162 pkt->ox_id = cpu_to_le16(t16); 3163 3164 t16 = (atio->u.isp24.attr << 9); 3165 pkt->flags |= cpu_to_le16(t16); 3166 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3167 3168 /* Set transfer direction */ 3169 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3170 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3171 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3172 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3173 3174 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3175 /* Fibre channel byte count */ 3176 pkt->transfer_length = cpu_to_le32(transfer_length); 3177 3178 /* ----- CRC context -------- */ 3179 3180 /* Allocate CRC context from global pool */ 3181 crc_ctx_pkt = cmd->ctx = 3182 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3183 3184 if (!crc_ctx_pkt) 3185 goto crc_queuing_error; 3186 3187 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3188 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3189 3190 /* Set handle */ 3191 crc_ctx_pkt->handle = pkt->handle; 3192 3193 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3194 3195 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3196 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3197 3198 if (!bundling) { 3199 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3200 } else { 3201 /* 3202 * Configure Bundling if we need to fetch interlaving 3203 * protection PCI accesses 3204 */ 3205 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3206 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3207 crc_ctx_pkt->u.bundling.dseg_count = 3208 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3209 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3210 } 3211 3212 /* Finish the common fields of CRC pkt */ 3213 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3214 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3215 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3216 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3217 3218 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3219 tc.vha = vha; 3220 tc.blk_sz = cmd->blk_sz; 3221 tc.bufflen = cmd->bufflen; 3222 tc.sg = cmd->sg; 3223 tc.prot_sg = cmd->prot_sg; 3224 tc.ctx = crc_ctx_pkt; 3225 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3226 3227 /* Walks data segments */ 3228 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3229 3230 if (!bundling && prm->prot_seg_cnt) { 3231 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3232 prm->tot_dsds, &tc)) 3233 goto crc_queuing_error; 3234 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3235 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3236 goto crc_queuing_error; 3237 3238 if (bundling && prm->prot_seg_cnt) { 3239 /* Walks dif segments */ 3240 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3241 3242 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3243 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3244 prm->prot_seg_cnt, cmd)) 3245 goto crc_queuing_error; 3246 } 3247 return QLA_SUCCESS; 3248 3249 crc_queuing_error: 3250 /* Cleanup will be performed by the caller */ 3251 qpair->req->outstanding_cmds[h] = NULL; 3252 3253 return QLA_FUNCTION_FAILED; 3254 } 3255 3256 /* 3257 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3258 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3259 */ 3260 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3261 uint8_t scsi_status) 3262 { 3263 struct scsi_qla_host *vha = cmd->vha; 3264 struct qla_qpair *qpair = cmd->qpair; 3265 struct ctio7_to_24xx *pkt; 3266 struct qla_tgt_prm prm; 3267 uint32_t full_req_cnt = 0; 3268 unsigned long flags = 0; 3269 int res; 3270 3271 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3272 (cmd->sess && cmd->sess->deleted)) { 3273 cmd->state = QLA_TGT_STATE_PROCESSED; 3274 return 0; 3275 } 3276 3277 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3278 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3279 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3280 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3281 &cmd->se_cmd, qpair->id); 3282 3283 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3284 &full_req_cnt); 3285 if (unlikely(res != 0)) { 3286 return res; 3287 } 3288 3289 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3290 3291 if (xmit_type == QLA_TGT_XMIT_STATUS) 3292 qpair->tgt_counters.core_qla_snd_status++; 3293 else 3294 qpair->tgt_counters.core_qla_que_buf++; 3295 3296 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3297 /* 3298 * Either the port is not online or this request was from 3299 * previous life, just abort the processing. 3300 */ 3301 cmd->state = QLA_TGT_STATE_PROCESSED; 3302 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3303 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3304 vha->flags.online, qla2x00_reset_active(vha), 3305 cmd->reset_count, qpair->chip_reset); 3306 res = 0; 3307 goto out_unmap_unlock; 3308 } 3309 3310 /* Does F/W have an IOCBs for this request */ 3311 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3312 if (unlikely(res)) 3313 goto out_unmap_unlock; 3314 3315 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3316 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3317 else 3318 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3319 if (unlikely(res != 0)) { 3320 qpair->req->cnt += full_req_cnt; 3321 goto out_unmap_unlock; 3322 } 3323 3324 pkt = (struct ctio7_to_24xx *)prm.pkt; 3325 3326 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3327 pkt->u.status0.flags |= 3328 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3329 CTIO7_FLAGS_STATUS_MODE_0); 3330 3331 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3332 qlt_load_data_segments(&prm); 3333 3334 if (prm.add_status_pkt == 0) { 3335 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3336 pkt->u.status0.scsi_status = 3337 cpu_to_le16(prm.rq_result); 3338 if (!cmd->edif) 3339 pkt->u.status0.residual = 3340 cpu_to_le32(prm.residual); 3341 3342 pkt->u.status0.flags |= cpu_to_le16( 3343 CTIO7_FLAGS_SEND_STATUS); 3344 if (qlt_need_explicit_conf(cmd, 0)) { 3345 pkt->u.status0.flags |= 3346 cpu_to_le16( 3347 CTIO7_FLAGS_EXPLICIT_CONFORM | 3348 CTIO7_FLAGS_CONFORM_REQ); 3349 } 3350 } 3351 3352 } else { 3353 /* 3354 * We have already made sure that there is sufficient 3355 * amount of request entries to not drop HW lock in 3356 * req_pkt(). 3357 */ 3358 struct ctio7_to_24xx *ctio = 3359 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3360 qpair->req); 3361 3362 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3363 "Building additional status packet 0x%p.\n", 3364 ctio); 3365 3366 /* 3367 * T10Dif: ctio_crc2_to_fw overlay ontop of 3368 * ctio7_to_24xx 3369 */ 3370 memcpy(ctio, pkt, sizeof(*ctio)); 3371 /* reset back to CTIO7 */ 3372 ctio->entry_count = 1; 3373 ctio->entry_type = CTIO_TYPE7; 3374 ctio->dseg_count = 0; 3375 ctio->u.status1.flags &= ~cpu_to_le16( 3376 CTIO7_FLAGS_DATA_IN); 3377 3378 /* Real finish is ctio_m1's finish */ 3379 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3380 pkt->u.status0.flags |= cpu_to_le16( 3381 CTIO7_FLAGS_DONT_RET_CTIO); 3382 3383 /* qlt_24xx_init_ctio_to_isp will correct 3384 * all neccessary fields that's part of CTIO7. 3385 * There should be no residual of CTIO-CRC2 data. 3386 */ 3387 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3388 &prm); 3389 } 3390 } else 3391 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3392 3393 3394 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3395 cmd->cmd_sent_to_fw = 1; 3396 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3397 3398 /* Memory Barrier */ 3399 wmb(); 3400 if (qpair->reqq_start_iocbs) 3401 qpair->reqq_start_iocbs(qpair); 3402 else 3403 qla2x00_start_iocbs(vha, qpair->req); 3404 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3405 3406 return 0; 3407 3408 out_unmap_unlock: 3409 qlt_unmap_sg(vha, cmd); 3410 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3411 3412 return res; 3413 } 3414 EXPORT_SYMBOL(qlt_xmit_response); 3415 3416 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3417 { 3418 struct ctio7_to_24xx *pkt; 3419 struct scsi_qla_host *vha = cmd->vha; 3420 struct qla_tgt *tgt = cmd->tgt; 3421 struct qla_tgt_prm prm; 3422 unsigned long flags = 0; 3423 int res = 0; 3424 struct qla_qpair *qpair = cmd->qpair; 3425 3426 memset(&prm, 0, sizeof(prm)); 3427 prm.cmd = cmd; 3428 prm.tgt = tgt; 3429 prm.sg = NULL; 3430 prm.req_cnt = 1; 3431 3432 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3433 (cmd->sess && cmd->sess->deleted)) { 3434 /* 3435 * Either the port is not online or this request was from 3436 * previous life, just abort the processing. 3437 */ 3438 cmd->aborted = 1; 3439 cmd->write_data_transferred = 0; 3440 cmd->state = QLA_TGT_STATE_DATA_IN; 3441 vha->hw->tgt.tgt_ops->handle_data(cmd); 3442 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3443 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3444 vha->flags.online, qla2x00_reset_active(vha), 3445 cmd->reset_count, qpair->chip_reset); 3446 return 0; 3447 } 3448 3449 /* Calculate number of entries and segments required */ 3450 if (qlt_pci_map_calc_cnt(&prm) != 0) 3451 return -EAGAIN; 3452 3453 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3454 /* Does F/W have an IOCBs for this request */ 3455 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3456 if (res != 0) 3457 goto out_unlock_free_unmap; 3458 if (cmd->se_cmd.prot_op) 3459 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3460 else 3461 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3462 3463 if (unlikely(res != 0)) { 3464 qpair->req->cnt += prm.req_cnt; 3465 goto out_unlock_free_unmap; 3466 } 3467 3468 pkt = (struct ctio7_to_24xx *)prm.pkt; 3469 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3470 CTIO7_FLAGS_STATUS_MODE_0); 3471 3472 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3473 qlt_load_data_segments(&prm); 3474 3475 cmd->state = QLA_TGT_STATE_NEED_DATA; 3476 cmd->cmd_sent_to_fw = 1; 3477 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3478 3479 /* Memory Barrier */ 3480 wmb(); 3481 if (qpair->reqq_start_iocbs) 3482 qpair->reqq_start_iocbs(qpair); 3483 else 3484 qla2x00_start_iocbs(vha, qpair->req); 3485 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3486 3487 return res; 3488 3489 out_unlock_free_unmap: 3490 qlt_unmap_sg(vha, cmd); 3491 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3492 3493 return res; 3494 } 3495 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3496 3497 3498 /* 3499 * it is assumed either hardware_lock or qpair lock is held. 3500 */ 3501 static void 3502 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3503 struct ctio_crc_from_fw *sts) 3504 { 3505 uint8_t *ap = &sts->actual_dif[0]; 3506 uint8_t *ep = &sts->expected_dif[0]; 3507 uint64_t lba = cmd->se_cmd.t_task_lba; 3508 uint8_t scsi_status, sense_key, asc, ascq; 3509 unsigned long flags; 3510 struct scsi_qla_host *vha = cmd->vha; 3511 3512 cmd->trc_flags |= TRC_DIF_ERR; 3513 3514 cmd->a_guard = get_unaligned_be16(ap + 0); 3515 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3516 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3517 3518 cmd->e_guard = get_unaligned_be16(ep + 0); 3519 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3520 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3521 3522 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3523 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3524 3525 scsi_status = sense_key = asc = ascq = 0; 3526 3527 /* check appl tag */ 3528 if (cmd->e_app_tag != cmd->a_app_tag) { 3529 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3530 "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]", 3531 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3532 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3533 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3534 cmd->atio.u.isp24.fcp_hdr.ox_id); 3535 3536 cmd->dif_err_code = DIF_ERR_APP; 3537 scsi_status = SAM_STAT_CHECK_CONDITION; 3538 sense_key = ABORTED_COMMAND; 3539 asc = 0x10; 3540 ascq = 0x2; 3541 } 3542 3543 /* check ref tag */ 3544 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3545 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3546 "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] ", 3547 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3548 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3549 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3550 cmd->atio.u.isp24.fcp_hdr.ox_id); 3551 3552 cmd->dif_err_code = DIF_ERR_REF; 3553 scsi_status = SAM_STAT_CHECK_CONDITION; 3554 sense_key = ABORTED_COMMAND; 3555 asc = 0x10; 3556 ascq = 0x3; 3557 goto out; 3558 } 3559 3560 /* check guard */ 3561 if (cmd->e_guard != cmd->a_guard) { 3562 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3563 "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]", 3564 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3565 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3566 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3567 cmd->atio.u.isp24.fcp_hdr.ox_id); 3568 3569 cmd->dif_err_code = DIF_ERR_GRD; 3570 scsi_status = SAM_STAT_CHECK_CONDITION; 3571 sense_key = ABORTED_COMMAND; 3572 asc = 0x10; 3573 ascq = 0x1; 3574 } 3575 out: 3576 switch (cmd->state) { 3577 case QLA_TGT_STATE_NEED_DATA: 3578 /* handle_data will load DIF error code */ 3579 cmd->state = QLA_TGT_STATE_DATA_IN; 3580 vha->hw->tgt.tgt_ops->handle_data(cmd); 3581 break; 3582 default: 3583 spin_lock_irqsave(&cmd->cmd_lock, flags); 3584 if (cmd->aborted) { 3585 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3586 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3587 break; 3588 } 3589 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3590 3591 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3592 ascq); 3593 /* assume scsi status gets out on the wire. 3594 * Will not wait for completion. 3595 */ 3596 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3597 break; 3598 } 3599 } 3600 3601 /* If hardware_lock held on entry, might drop it, then reaquire */ 3602 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3603 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3604 struct imm_ntfy_from_isp *ntfy) 3605 { 3606 struct nack_to_isp *nack; 3607 struct qla_hw_data *ha = vha->hw; 3608 request_t *pkt; 3609 int ret = 0; 3610 3611 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3612 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3613 3614 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3615 if (pkt == NULL) { 3616 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3617 "qla_target(%d): %s failed: unable to allocate " 3618 "request packet\n", vha->vp_idx, __func__); 3619 return -ENOMEM; 3620 } 3621 3622 pkt->entry_type = NOTIFY_ACK_TYPE; 3623 pkt->entry_count = 1; 3624 pkt->handle = QLA_TGT_SKIP_HANDLE; 3625 3626 nack = (struct nack_to_isp *)pkt; 3627 nack->ox_id = ntfy->ox_id; 3628 3629 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3630 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3631 nack->u.isp24.flags = ntfy->u.isp24.flags & 3632 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3633 } 3634 3635 /* terminate */ 3636 nack->u.isp24.flags |= 3637 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3638 3639 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3640 nack->u.isp24.status = ntfy->u.isp24.status; 3641 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3642 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3643 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3644 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3645 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3646 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3647 3648 qla2x00_start_iocbs(vha, vha->req); 3649 return ret; 3650 } 3651 3652 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3653 struct imm_ntfy_from_isp *imm, int ha_locked) 3654 { 3655 int rc; 3656 3657 WARN_ON_ONCE(!ha_locked); 3658 rc = __qlt_send_term_imm_notif(vha, imm); 3659 pr_debug("rc = %d\n", rc); 3660 } 3661 3662 /* 3663 * If hardware_lock held on entry, might drop it, then reaquire 3664 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3665 */ 3666 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3667 struct qla_tgt_cmd *cmd, 3668 struct atio_from_isp *atio) 3669 { 3670 struct scsi_qla_host *vha = qpair->vha; 3671 struct ctio7_to_24xx *ctio24; 3672 struct qla_hw_data *ha = vha->hw; 3673 request_t *pkt; 3674 int ret = 0; 3675 uint16_t temp; 3676 3677 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3678 3679 if (cmd) 3680 vha = cmd->vha; 3681 3682 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3683 if (pkt == NULL) { 3684 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3685 "qla_target(%d): %s failed: unable to allocate " 3686 "request packet\n", vha->vp_idx, __func__); 3687 return -ENOMEM; 3688 } 3689 3690 if (cmd != NULL) { 3691 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3692 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3693 "qla_target(%d): Terminating cmd %p with " 3694 "incorrect state %d\n", vha->vp_idx, cmd, 3695 cmd->state); 3696 } else 3697 ret = 1; 3698 } 3699 3700 qpair->tgt_counters.num_term_xchg_sent++; 3701 pkt->entry_count = 1; 3702 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3703 3704 ctio24 = (struct ctio7_to_24xx *)pkt; 3705 ctio24->entry_type = CTIO_TYPE7; 3706 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3707 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3708 ctio24->vp_index = vha->vp_idx; 3709 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3710 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3711 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3712 CTIO7_FLAGS_TERMINATE; 3713 ctio24->u.status1.flags = cpu_to_le16(temp); 3714 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3715 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3716 3717 /* Memory Barrier */ 3718 wmb(); 3719 if (qpair->reqq_start_iocbs) 3720 qpair->reqq_start_iocbs(qpair); 3721 else 3722 qla2x00_start_iocbs(vha, qpair->req); 3723 return ret; 3724 } 3725 3726 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3727 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3728 int ul_abort) 3729 { 3730 struct scsi_qla_host *vha; 3731 unsigned long flags = 0; 3732 int rc; 3733 3734 /* why use different vha? NPIV */ 3735 if (cmd) 3736 vha = cmd->vha; 3737 else 3738 vha = qpair->vha; 3739 3740 if (ha_locked) { 3741 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3742 if (rc == -ENOMEM) 3743 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3744 goto done; 3745 } 3746 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3747 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3748 if (rc == -ENOMEM) 3749 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3750 3751 done: 3752 if (cmd && !ul_abort && !cmd->aborted) { 3753 if (cmd->sg_mapped) 3754 qlt_unmap_sg(vha, cmd); 3755 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3756 } 3757 3758 if (!ha_locked) 3759 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3760 3761 return; 3762 } 3763 3764 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3765 { 3766 struct list_head free_list; 3767 struct qla_tgt_cmd *cmd, *tcmd; 3768 3769 vha->hw->tgt.leak_exchg_thresh_hold = 3770 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3771 3772 cmd = tcmd = NULL; 3773 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3774 INIT_LIST_HEAD(&free_list); 3775 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3776 3777 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3778 list_del(&cmd->cmd_list); 3779 /* This cmd was never sent to TCM. There is no need 3780 * to schedule free or call free_cmd 3781 */ 3782 qlt_free_cmd(cmd); 3783 vha->hw->tgt.num_qfull_cmds_alloc--; 3784 } 3785 } 3786 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3787 } 3788 3789 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3790 { 3791 uint32_t total_leaked; 3792 3793 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3794 3795 if (vha->hw->tgt.leak_exchg_thresh_hold && 3796 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3797 3798 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3799 "Chip reset due to exchange starvation: %d/%d.\n", 3800 total_leaked, vha->hw->cur_fw_xcb_count); 3801 3802 if (IS_P3P_TYPE(vha->hw)) 3803 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3804 else 3805 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3806 qla2xxx_wake_dpc(vha); 3807 } 3808 3809 } 3810 3811 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3812 { 3813 struct qla_tgt *tgt = cmd->tgt; 3814 struct scsi_qla_host *vha = tgt->vha; 3815 struct se_cmd *se_cmd = &cmd->se_cmd; 3816 unsigned long flags; 3817 3818 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3819 "qla_target(%d): terminating exchange for aborted cmd=%p " 3820 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3821 se_cmd->tag); 3822 3823 spin_lock_irqsave(&cmd->cmd_lock, flags); 3824 if (cmd->aborted) { 3825 if (cmd->sg_mapped) 3826 qlt_unmap_sg(vha, cmd); 3827 3828 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3829 /* 3830 * It's normal to see 2 calls in this path: 3831 * 1) XFER Rdy completion + CMD_T_ABORT 3832 * 2) TCM TMR - drain_state_list 3833 */ 3834 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3835 "multiple abort. %p transport_state %x, t_state %x, " 3836 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3837 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3838 return -EIO; 3839 } 3840 cmd->aborted = 1; 3841 cmd->trc_flags |= TRC_ABORT; 3842 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3843 3844 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3845 return 0; 3846 } 3847 EXPORT_SYMBOL(qlt_abort_cmd); 3848 3849 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3850 { 3851 struct fc_port *sess = cmd->sess; 3852 3853 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3854 "%s: se_cmd[%p] ox_id %04x\n", 3855 __func__, &cmd->se_cmd, 3856 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3857 3858 BUG_ON(cmd->cmd_in_wq); 3859 3860 if (!cmd->q_full) 3861 qlt_decr_num_pend_cmds(cmd->vha); 3862 3863 BUG_ON(cmd->sg_mapped); 3864 cmd->jiffies_at_free = get_jiffies_64(); 3865 3866 if (!sess || !sess->se_sess) { 3867 WARN_ON(1); 3868 return; 3869 } 3870 cmd->jiffies_at_free = get_jiffies_64(); 3871 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3872 } 3873 EXPORT_SYMBOL(qlt_free_cmd); 3874 3875 /* 3876 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3877 */ 3878 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3879 struct qla_tgt_cmd *cmd, uint32_t status) 3880 { 3881 int term = 0; 3882 struct scsi_qla_host *vha = qpair->vha; 3883 3884 if (cmd->se_cmd.prot_op) 3885 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3886 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3887 "se_cmd=%p tag[%x] op %#x/%s", 3888 cmd->lba, cmd->lba, 3889 cmd->num_blks, &cmd->se_cmd, 3890 cmd->atio.u.isp24.exchange_addr, 3891 cmd->se_cmd.prot_op, 3892 prot_op_str(cmd->se_cmd.prot_op)); 3893 3894 if (ctio != NULL) { 3895 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3896 3897 term = !(c->flags & 3898 cpu_to_le16(OF_TERM_EXCH)); 3899 } else 3900 term = 1; 3901 3902 if (term) 3903 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3904 3905 return term; 3906 } 3907 3908 3909 /* ha->hardware_lock supposed to be held on entry */ 3910 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3911 struct rsp_que *rsp, uint32_t handle, void *ctio) 3912 { 3913 void *cmd = NULL; 3914 struct req_que *req; 3915 int qid = GET_QID(handle); 3916 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3917 3918 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3919 return NULL; 3920 3921 if (qid == rsp->req->id) { 3922 req = rsp->req; 3923 } else if (vha->hw->req_q_map[qid]) { 3924 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3925 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3926 vha->vp_idx, rsp->id, handle); 3927 req = vha->hw->req_q_map[qid]; 3928 } else { 3929 return NULL; 3930 } 3931 3932 h &= QLA_CMD_HANDLE_MASK; 3933 3934 if (h != QLA_TGT_NULL_HANDLE) { 3935 if (unlikely(h >= req->num_outstanding_cmds)) { 3936 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3937 "qla_target(%d): Wrong handle %x received\n", 3938 vha->vp_idx, handle); 3939 return NULL; 3940 } 3941 3942 cmd = req->outstanding_cmds[h]; 3943 if (unlikely(cmd == NULL)) { 3944 ql_dbg(ql_dbg_async, vha, 0xe053, 3945 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3946 vha->vp_idx, handle, req->id, rsp->id); 3947 return NULL; 3948 } 3949 req->outstanding_cmds[h] = NULL; 3950 } else if (ctio != NULL) { 3951 /* We can't get loop ID from CTIO7 */ 3952 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3953 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3954 "support NULL handles\n", vha->vp_idx); 3955 return NULL; 3956 } 3957 3958 return cmd; 3959 } 3960 3961 /* 3962 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3963 */ 3964 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3965 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3966 { 3967 struct qla_hw_data *ha = vha->hw; 3968 struct se_cmd *se_cmd; 3969 struct qla_tgt_cmd *cmd; 3970 struct qla_qpair *qpair = rsp->qpair; 3971 3972 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3973 /* That could happen only in case of an error/reset/abort */ 3974 if (status != CTIO_SUCCESS) { 3975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3976 "Intermediate CTIO received" 3977 " (status %x)\n", status); 3978 } 3979 return; 3980 } 3981 3982 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3983 if (cmd == NULL) 3984 return; 3985 3986 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3987 cmd->sess) { 3988 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 3989 (struct ctio7_from_24xx *)ctio); 3990 } 3991 3992 se_cmd = &cmd->se_cmd; 3993 cmd->cmd_sent_to_fw = 0; 3994 3995 qlt_unmap_sg(vha, cmd); 3996 3997 if (unlikely(status != CTIO_SUCCESS)) { 3998 switch (status & 0xFFFF) { 3999 case CTIO_INVALID_RX_ID: 4000 if (printk_ratelimit()) 4001 dev_info(&vha->hw->pdev->dev, 4002 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4003 vha->vp_idx, cmd->atio.u.isp24.attr, 4004 ((cmd->ctio_flags >> 9) & 0xf), 4005 cmd->ctio_flags); 4006 4007 break; 4008 case CTIO_LIP_RESET: 4009 case CTIO_TARGET_RESET: 4010 case CTIO_ABORTED: 4011 /* driver request abort via Terminate exchange */ 4012 case CTIO_TIMEOUT: 4013 /* They are OK */ 4014 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4015 "qla_target(%d): CTIO with " 4016 "status %#x received, state %x, se_cmd %p, " 4017 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4018 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4019 status, cmd->state, se_cmd); 4020 break; 4021 4022 case CTIO_PORT_LOGGED_OUT: 4023 case CTIO_PORT_UNAVAILABLE: 4024 { 4025 int logged_out = 4026 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4027 4028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4029 "qla_target(%d): CTIO with %s status %x " 4030 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4031 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4032 status, cmd->state, se_cmd); 4033 4034 if (logged_out && cmd->sess) { 4035 /* 4036 * Session is already logged out, but we need 4037 * to notify initiator, who's not aware of this 4038 */ 4039 cmd->sess->send_els_logo = 1; 4040 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4041 "%s %d %8phC post del sess\n", 4042 __func__, __LINE__, cmd->sess->port_name); 4043 4044 qlt_schedule_sess_for_deletion(cmd->sess); 4045 } 4046 break; 4047 } 4048 case CTIO_DIF_ERROR: { 4049 struct ctio_crc_from_fw *crc = 4050 (struct ctio_crc_from_fw *)ctio; 4051 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4052 "qla_target(%d): CTIO with DIF_ERROR status %x " 4053 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4054 "expect_dif[0x%llx]\n", 4055 vha->vp_idx, status, cmd->state, se_cmd, 4056 *((u64 *)&crc->actual_dif[0]), 4057 *((u64 *)&crc->expected_dif[0])); 4058 4059 qlt_handle_dif_error(qpair, cmd, ctio); 4060 return; 4061 } 4062 4063 case CTIO_FAST_AUTH_ERR: 4064 case CTIO_FAST_INCOMP_PAD_LEN: 4065 case CTIO_FAST_INVALID_REQ: 4066 case CTIO_FAST_SPI_ERR: 4067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4068 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4069 vha->vp_idx, status, cmd->state, se_cmd); 4070 break; 4071 4072 default: 4073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4074 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4075 vha->vp_idx, status, cmd->state, se_cmd); 4076 break; 4077 } 4078 4079 4080 /* "cmd->aborted" means 4081 * cmd is already aborted/terminated, we don't 4082 * need to terminate again. The exchange is already 4083 * cleaned up/freed at FW level. Just cleanup at driver 4084 * level. 4085 */ 4086 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4087 (!cmd->aborted)) { 4088 cmd->trc_flags |= TRC_CTIO_ERR; 4089 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4090 return; 4091 } 4092 } 4093 4094 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4095 cmd->trc_flags |= TRC_CTIO_DONE; 4096 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4097 cmd->state = QLA_TGT_STATE_DATA_IN; 4098 4099 if (status == CTIO_SUCCESS) 4100 cmd->write_data_transferred = 1; 4101 4102 ha->tgt.tgt_ops->handle_data(cmd); 4103 return; 4104 } else if (cmd->aborted) { 4105 cmd->trc_flags |= TRC_CTIO_ABORTED; 4106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4107 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4108 } else { 4109 cmd->trc_flags |= TRC_CTIO_STRANGE; 4110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4111 "qla_target(%d): A command in state (%d) should " 4112 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4113 } 4114 4115 if (unlikely(status != CTIO_SUCCESS) && 4116 !cmd->aborted) { 4117 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4118 dump_stack(); 4119 } 4120 4121 ha->tgt.tgt_ops->free_cmd(cmd); 4122 } 4123 4124 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4125 uint8_t task_codes) 4126 { 4127 int fcp_task_attr; 4128 4129 switch (task_codes) { 4130 case ATIO_SIMPLE_QUEUE: 4131 fcp_task_attr = TCM_SIMPLE_TAG; 4132 break; 4133 case ATIO_HEAD_OF_QUEUE: 4134 fcp_task_attr = TCM_HEAD_TAG; 4135 break; 4136 case ATIO_ORDERED_QUEUE: 4137 fcp_task_attr = TCM_ORDERED_TAG; 4138 break; 4139 case ATIO_ACA_QUEUE: 4140 fcp_task_attr = TCM_ACA_TAG; 4141 break; 4142 case ATIO_UNTAGGED: 4143 fcp_task_attr = TCM_SIMPLE_TAG; 4144 break; 4145 default: 4146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4147 "qla_target: unknown task code %x, use ORDERED instead\n", 4148 task_codes); 4149 fcp_task_attr = TCM_ORDERED_TAG; 4150 break; 4151 } 4152 4153 return fcp_task_attr; 4154 } 4155 4156 /* 4157 * Process context for I/O path into tcm_qla2xxx code 4158 */ 4159 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4160 { 4161 scsi_qla_host_t *vha = cmd->vha; 4162 struct qla_hw_data *ha = vha->hw; 4163 struct fc_port *sess = cmd->sess; 4164 struct atio_from_isp *atio = &cmd->atio; 4165 unsigned char *cdb; 4166 unsigned long flags; 4167 uint32_t data_length; 4168 int ret, fcp_task_attr, data_dir, bidi = 0; 4169 struct qla_qpair *qpair = cmd->qpair; 4170 4171 cmd->cmd_in_wq = 0; 4172 cmd->trc_flags |= TRC_DO_WORK; 4173 4174 if (cmd->aborted) { 4175 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4176 "cmd with tag %u is aborted\n", 4177 cmd->atio.u.isp24.exchange_addr); 4178 goto out_term; 4179 } 4180 4181 spin_lock_init(&cmd->cmd_lock); 4182 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4183 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4184 4185 if (atio->u.isp24.fcp_cmnd.rddata && 4186 atio->u.isp24.fcp_cmnd.wrdata) { 4187 bidi = 1; 4188 data_dir = DMA_TO_DEVICE; 4189 } else if (atio->u.isp24.fcp_cmnd.rddata) 4190 data_dir = DMA_FROM_DEVICE; 4191 else if (atio->u.isp24.fcp_cmnd.wrdata) 4192 data_dir = DMA_TO_DEVICE; 4193 else 4194 data_dir = DMA_NONE; 4195 4196 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4197 atio->u.isp24.fcp_cmnd.task_attr); 4198 data_length = get_datalen_for_atio(atio); 4199 4200 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4201 fcp_task_attr, data_dir, bidi); 4202 if (ret != 0) 4203 goto out_term; 4204 /* 4205 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4206 */ 4207 ha->tgt.tgt_ops->put_sess(sess); 4208 return; 4209 4210 out_term: 4211 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4212 /* 4213 * cmd has not sent to target yet, so pass NULL as the second 4214 * argument to qlt_send_term_exchange() and free the memory here. 4215 */ 4216 cmd->trc_flags |= TRC_DO_WORK_ERR; 4217 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4218 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4219 4220 qlt_decr_num_pend_cmds(vha); 4221 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4222 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4223 4224 ha->tgt.tgt_ops->put_sess(sess); 4225 } 4226 4227 static void qlt_do_work(struct work_struct *work) 4228 { 4229 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4230 scsi_qla_host_t *vha = cmd->vha; 4231 unsigned long flags; 4232 4233 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4234 list_del(&cmd->cmd_list); 4235 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4236 4237 __qlt_do_work(cmd); 4238 } 4239 4240 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4241 { 4242 unsigned long flags; 4243 struct qla_hw_data *ha = vha->hw; 4244 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4245 void *node; 4246 u64 key = 0; 4247 4248 ql_log(ql_log_info, vha, 0x706c, 4249 "User update Number of Active Qpairs %d\n", 4250 ha->tgt.num_act_qpairs); 4251 4252 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4253 4254 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4255 btree_remove64(&tgt->lun_qpair_map, key); 4256 4257 ha->base_qpair->lun_cnt = 0; 4258 for (key = 0; key < ha->max_qpairs; key++) 4259 if (ha->queue_pair_map[key]) 4260 ha->queue_pair_map[key]->lun_cnt = 0; 4261 4262 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4263 } 4264 4265 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4266 struct qla_tgt_cmd *cmd) 4267 { 4268 struct qla_qpair *qpair, *qp; 4269 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4270 struct qla_qpair_hint *h; 4271 4272 if (vha->flags.qpairs_available) { 4273 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4274 if (unlikely(!h)) { 4275 /* spread lun to qpair ratio evently */ 4276 int lcnt = 0, rc; 4277 struct scsi_qla_host *base_vha = 4278 pci_get_drvdata(vha->hw->pdev); 4279 4280 qpair = vha->hw->base_qpair; 4281 if (qpair->lun_cnt == 0) { 4282 qpair->lun_cnt++; 4283 h = qla_qpair_to_hint(tgt, qpair); 4284 BUG_ON(!h); 4285 rc = btree_insert64(&tgt->lun_qpair_map, 4286 cmd->unpacked_lun, h, GFP_ATOMIC); 4287 if (rc) { 4288 qpair->lun_cnt--; 4289 ql_log(ql_log_info, vha, 0xd037, 4290 "Unable to insert lun %llx into lun_qpair_map\n", 4291 cmd->unpacked_lun); 4292 } 4293 goto out; 4294 } else { 4295 lcnt = qpair->lun_cnt; 4296 } 4297 4298 h = NULL; 4299 list_for_each_entry(qp, &base_vha->qp_list, 4300 qp_list_elem) { 4301 if (qp->lun_cnt == 0) { 4302 qp->lun_cnt++; 4303 h = qla_qpair_to_hint(tgt, qp); 4304 BUG_ON(!h); 4305 rc = btree_insert64(&tgt->lun_qpair_map, 4306 cmd->unpacked_lun, h, GFP_ATOMIC); 4307 if (rc) { 4308 qp->lun_cnt--; 4309 ql_log(ql_log_info, vha, 0xd038, 4310 "Unable to insert lun %llx into lun_qpair_map\n", 4311 cmd->unpacked_lun); 4312 } 4313 qpair = qp; 4314 goto out; 4315 } else { 4316 if (qp->lun_cnt < lcnt) { 4317 lcnt = qp->lun_cnt; 4318 qpair = qp; 4319 continue; 4320 } 4321 } 4322 } 4323 BUG_ON(!qpair); 4324 qpair->lun_cnt++; 4325 h = qla_qpair_to_hint(tgt, qpair); 4326 BUG_ON(!h); 4327 rc = btree_insert64(&tgt->lun_qpair_map, 4328 cmd->unpacked_lun, h, GFP_ATOMIC); 4329 if (rc) { 4330 qpair->lun_cnt--; 4331 ql_log(ql_log_info, vha, 0xd039, 4332 "Unable to insert lun %llx into lun_qpair_map\n", 4333 cmd->unpacked_lun); 4334 } 4335 } 4336 } else { 4337 h = &tgt->qphints[0]; 4338 } 4339 out: 4340 cmd->qpair = h->qpair; 4341 cmd->se_cmd.cpuid = h->cpuid; 4342 } 4343 4344 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4345 struct fc_port *sess, 4346 struct atio_from_isp *atio) 4347 { 4348 struct qla_tgt_cmd *cmd; 4349 4350 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4351 if (!cmd) 4352 return NULL; 4353 4354 cmd->cmd_type = TYPE_TGT_CMD; 4355 memcpy(&cmd->atio, atio, sizeof(*atio)); 4356 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4357 cmd->state = QLA_TGT_STATE_NEW; 4358 cmd->tgt = vha->vha_tgt.qla_tgt; 4359 qlt_incr_num_pend_cmds(vha); 4360 cmd->vha = vha; 4361 cmd->sess = sess; 4362 cmd->loop_id = sess->loop_id; 4363 cmd->conf_compl_supported = sess->conf_compl_supported; 4364 4365 cmd->trc_flags = 0; 4366 cmd->jiffies_at_alloc = get_jiffies_64(); 4367 4368 cmd->unpacked_lun = scsilun_to_int( 4369 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4370 qlt_assign_qpair(vha, cmd); 4371 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4372 cmd->vp_idx = vha->vp_idx; 4373 cmd->edif = sess->edif.enable; 4374 4375 return cmd; 4376 } 4377 4378 /* ha->hardware_lock supposed to be held on entry */ 4379 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4380 struct atio_from_isp *atio) 4381 { 4382 struct qla_hw_data *ha = vha->hw; 4383 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4384 struct fc_port *sess; 4385 struct qla_tgt_cmd *cmd; 4386 unsigned long flags; 4387 port_id_t id; 4388 4389 if (unlikely(tgt->tgt_stop)) { 4390 ql_dbg(ql_dbg_io, vha, 0x3061, 4391 "New command while device %p is shutting down\n", tgt); 4392 return -ENODEV; 4393 } 4394 4395 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4396 if (IS_SW_RESV_ADDR(id)) 4397 return -EBUSY; 4398 4399 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4400 if (unlikely(!sess)) 4401 return -EFAULT; 4402 4403 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4404 * session deletion, but it's still in sess_del_work wq */ 4405 if (sess->deleted) { 4406 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4407 "New command while old session %p is being deleted\n", 4408 sess); 4409 return -EFAULT; 4410 } 4411 4412 /* 4413 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4414 */ 4415 if (!kref_get_unless_zero(&sess->sess_kref)) { 4416 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4417 "%s: kref_get fail, %8phC oxid %x \n", 4418 __func__, sess->port_name, 4419 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4420 return -EFAULT; 4421 } 4422 4423 cmd = qlt_get_tag(vha, sess, atio); 4424 if (!cmd) { 4425 ql_dbg(ql_dbg_io, vha, 0x3062, 4426 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4427 ha->tgt.tgt_ops->put_sess(sess); 4428 return -EBUSY; 4429 } 4430 4431 cmd->cmd_in_wq = 1; 4432 cmd->trc_flags |= TRC_NEW_CMD; 4433 4434 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4435 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4436 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4437 4438 INIT_WORK(&cmd->work, qlt_do_work); 4439 if (vha->flags.qpairs_available) { 4440 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4441 } else if (ha->msix_count) { 4442 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4443 queue_work_on(smp_processor_id(), qla_tgt_wq, 4444 &cmd->work); 4445 else 4446 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4447 &cmd->work); 4448 } else { 4449 queue_work(qla_tgt_wq, &cmd->work); 4450 } 4451 4452 return 0; 4453 } 4454 4455 /* ha->hardware_lock supposed to be held on entry */ 4456 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4457 int fn, void *iocb, int flags) 4458 { 4459 struct scsi_qla_host *vha = sess->vha; 4460 struct qla_hw_data *ha = vha->hw; 4461 struct qla_tgt_mgmt_cmd *mcmd; 4462 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4463 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4464 4465 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4466 if (!mcmd) { 4467 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4468 "qla_target(%d): Allocation of management " 4469 "command failed, some commands and their data could " 4470 "leak\n", vha->vp_idx); 4471 return -ENOMEM; 4472 } 4473 memset(mcmd, 0, sizeof(*mcmd)); 4474 mcmd->sess = sess; 4475 4476 if (iocb) { 4477 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4478 sizeof(mcmd->orig_iocb.imm_ntfy)); 4479 } 4480 mcmd->tmr_func = fn; 4481 mcmd->flags = flags; 4482 mcmd->reset_count = ha->base_qpair->chip_reset; 4483 mcmd->qpair = h->qpair; 4484 mcmd->vha = vha; 4485 mcmd->se_cmd.cpuid = h->cpuid; 4486 mcmd->unpacked_lun = lun; 4487 4488 switch (fn) { 4489 case QLA_TGT_LUN_RESET: 4490 case QLA_TGT_CLEAR_TS: 4491 case QLA_TGT_ABORT_TS: 4492 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4493 fallthrough; 4494 case QLA_TGT_CLEAR_ACA: 4495 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4496 mcmd->qpair = h->qpair; 4497 mcmd->se_cmd.cpuid = h->cpuid; 4498 break; 4499 4500 case QLA_TGT_TARGET_RESET: 4501 case QLA_TGT_NEXUS_LOSS_SESS: 4502 case QLA_TGT_NEXUS_LOSS: 4503 case QLA_TGT_ABORT_ALL: 4504 default: 4505 /* no-op */ 4506 break; 4507 } 4508 4509 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4510 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4511 &mcmd->work); 4512 4513 return 0; 4514 } 4515 4516 /* ha->hardware_lock supposed to be held on entry */ 4517 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4518 { 4519 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4520 struct qla_hw_data *ha = vha->hw; 4521 struct fc_port *sess; 4522 u64 unpacked_lun; 4523 int fn; 4524 unsigned long flags; 4525 4526 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4527 4528 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4529 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4530 a->u.isp24.fcp_hdr.s_id); 4531 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4532 4533 unpacked_lun = 4534 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4535 4536 if (sess == NULL || sess->deleted) 4537 return -EFAULT; 4538 4539 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4540 } 4541 4542 /* ha->hardware_lock supposed to be held on entry */ 4543 static int __qlt_abort_task(struct scsi_qla_host *vha, 4544 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4545 { 4546 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4547 struct qla_hw_data *ha = vha->hw; 4548 struct qla_tgt_mgmt_cmd *mcmd; 4549 u64 unpacked_lun; 4550 int rc; 4551 4552 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4553 if (mcmd == NULL) { 4554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4555 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4556 vha->vp_idx, __func__); 4557 return -ENOMEM; 4558 } 4559 memset(mcmd, 0, sizeof(*mcmd)); 4560 4561 mcmd->sess = sess; 4562 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4563 sizeof(mcmd->orig_iocb.imm_ntfy)); 4564 4565 unpacked_lun = 4566 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4567 mcmd->reset_count = ha->base_qpair->chip_reset; 4568 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4569 mcmd->qpair = ha->base_qpair; 4570 4571 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4572 le16_to_cpu(iocb->u.isp2x.seq_id)); 4573 if (rc != 0) { 4574 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4575 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4576 vha->vp_idx, rc); 4577 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4578 return -EFAULT; 4579 } 4580 4581 return 0; 4582 } 4583 4584 /* ha->hardware_lock supposed to be held on entry */ 4585 static int qlt_abort_task(struct scsi_qla_host *vha, 4586 struct imm_ntfy_from_isp *iocb) 4587 { 4588 struct qla_hw_data *ha = vha->hw; 4589 struct fc_port *sess; 4590 int loop_id; 4591 unsigned long flags; 4592 4593 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4594 4595 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4596 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4597 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4598 4599 if (sess == NULL) { 4600 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4601 "qla_target(%d): task abort for unexisting " 4602 "session\n", vha->vp_idx); 4603 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4604 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4605 } 4606 4607 return __qlt_abort_task(vha, iocb, sess); 4608 } 4609 4610 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4611 { 4612 if (rc != MBS_COMMAND_COMPLETE) { 4613 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4614 "%s: se_sess %p / sess %p from" 4615 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4616 " LOGO failed: %#x\n", 4617 __func__, 4618 fcport->se_sess, 4619 fcport, 4620 fcport->port_name, fcport->loop_id, 4621 fcport->d_id.b.domain, fcport->d_id.b.area, 4622 fcport->d_id.b.al_pa, rc); 4623 } 4624 4625 fcport->logout_completed = 1; 4626 } 4627 4628 /* 4629 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4630 * 4631 * Schedules sessions with matching port_id/loop_id but different wwn for 4632 * deletion. Returns existing session with matching wwn if present. 4633 * Null otherwise. 4634 */ 4635 struct fc_port * 4636 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4637 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4638 { 4639 struct fc_port *sess = NULL, *other_sess; 4640 uint64_t other_wwn; 4641 4642 *conflict_sess = NULL; 4643 4644 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4645 4646 other_wwn = wwn_to_u64(other_sess->port_name); 4647 4648 if (wwn == other_wwn) { 4649 WARN_ON(sess); 4650 sess = other_sess; 4651 continue; 4652 } 4653 4654 /* find other sess with nport_id collision */ 4655 if (port_id.b24 == other_sess->d_id.b24) { 4656 if (loop_id != other_sess->loop_id) { 4657 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4658 "Invalidating sess %p loop_id %d wwn %llx.\n", 4659 other_sess, other_sess->loop_id, other_wwn); 4660 4661 /* 4662 * logout_on_delete is set by default, but another 4663 * session that has the same s_id/loop_id combo 4664 * might have cleared it when requested this session 4665 * deletion, so don't touch it 4666 */ 4667 qlt_schedule_sess_for_deletion(other_sess); 4668 } else { 4669 /* 4670 * Another wwn used to have our s_id/loop_id 4671 * kill the session, but don't free the loop_id 4672 */ 4673 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4674 "Invalidating sess %p loop_id %d wwn %llx.\n", 4675 other_sess, other_sess->loop_id, other_wwn); 4676 4677 other_sess->keep_nport_handle = 1; 4678 if (other_sess->disc_state != DSC_DELETED) 4679 *conflict_sess = other_sess; 4680 qlt_schedule_sess_for_deletion(other_sess); 4681 } 4682 continue; 4683 } 4684 4685 /* find other sess with nport handle collision */ 4686 if ((loop_id == other_sess->loop_id) && 4687 (loop_id != FC_NO_LOOP_ID)) { 4688 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4689 "Invalidating sess %p loop_id %d wwn %llx.\n", 4690 other_sess, other_sess->loop_id, other_wwn); 4691 4692 /* Same loop_id but different s_id 4693 * Ok to kill and logout */ 4694 qlt_schedule_sess_for_deletion(other_sess); 4695 } 4696 } 4697 4698 return sess; 4699 } 4700 4701 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4702 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4703 { 4704 struct qla_tgt_sess_op *op; 4705 struct qla_tgt_cmd *cmd; 4706 uint32_t key; 4707 int count = 0; 4708 unsigned long flags; 4709 4710 key = (((u32)s_id->b.domain << 16) | 4711 ((u32)s_id->b.area << 8) | 4712 ((u32)s_id->b.al_pa)); 4713 4714 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4715 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4716 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4717 4718 if (op_key == key) { 4719 op->aborted = true; 4720 count++; 4721 } 4722 } 4723 4724 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4725 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4726 4727 if (cmd_key == key) { 4728 cmd->aborted = 1; 4729 count++; 4730 } 4731 } 4732 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4733 4734 return count; 4735 } 4736 4737 static int qlt_handle_login(struct scsi_qla_host *vha, 4738 struct imm_ntfy_from_isp *iocb) 4739 { 4740 struct fc_port *sess = NULL, *conflict_sess = NULL; 4741 uint64_t wwn; 4742 port_id_t port_id; 4743 uint16_t loop_id, wd3_lo; 4744 int res = 0; 4745 struct qlt_plogi_ack_t *pla; 4746 unsigned long flags; 4747 4748 lockdep_assert_held(&vha->hw->hardware_lock); 4749 4750 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4751 4752 port_id.b.domain = iocb->u.isp24.port_id[2]; 4753 port_id.b.area = iocb->u.isp24.port_id[1]; 4754 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4755 port_id.b.rsvd_1 = 0; 4756 4757 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4758 4759 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4760 abort_cmds_for_s_id(vha, &port_id); 4761 4762 if (wwn) { 4763 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4764 sess = qlt_find_sess_invalidate_other(vha, wwn, 4765 port_id, loop_id, &conflict_sess); 4766 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4767 } else { 4768 ql_dbg(ql_dbg_disc, vha, 0xffff, 4769 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4770 __func__, __LINE__, loop_id, port_id.b24); 4771 qlt_send_term_imm_notif(vha, iocb, 1); 4772 goto out; 4773 } 4774 4775 if (IS_SW_RESV_ADDR(port_id)) { 4776 res = 1; 4777 goto out; 4778 } 4779 4780 if (vha->hw->flags.edif_enabled && 4781 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4782 iocb->u.isp24.status_subcode == ELS_PLOGI && 4783 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4784 ql_dbg(ql_dbg_disc, vha, 0xffff, 4785 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4786 __func__, __LINE__, loop_id, port_id.b24); 4787 qlt_send_term_imm_notif(vha, iocb, 1); 4788 goto out; 4789 } 4790 4791 if (vha->hw->flags.edif_enabled) { 4792 if (DBELL_INACTIVE(vha)) { 4793 ql_dbg(ql_dbg_disc, vha, 0xffff, 4794 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4795 __func__, __LINE__, loop_id, port_id.b24); 4796 qlt_send_term_imm_notif(vha, iocb, 1); 4797 goto out; 4798 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4799 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4800 ql_dbg(ql_dbg_disc, vha, 0xffff, 4801 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4802 __func__, __LINE__, loop_id, port_id.b24); 4803 qlt_send_term_imm_notif(vha, iocb, 1); 4804 goto out; 4805 } 4806 } 4807 4808 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4809 if (!pla) { 4810 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4811 "%s %d %8phC Term INOT due to mem alloc fail", 4812 __func__, __LINE__, 4813 iocb->u.isp24.port_name); 4814 qlt_send_term_imm_notif(vha, iocb, 1); 4815 goto out; 4816 } 4817 4818 if (conflict_sess) { 4819 conflict_sess->login_gen++; 4820 qlt_plogi_ack_link(vha, pla, conflict_sess, 4821 QLT_PLOGI_LINK_CONFLICT); 4822 } 4823 4824 if (!sess) { 4825 pla->ref_count++; 4826 ql_dbg(ql_dbg_disc, vha, 0xffff, 4827 "%s %d %8phC post new sess\n", 4828 __func__, __LINE__, iocb->u.isp24.port_name); 4829 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4830 qla24xx_post_newsess_work(vha, &port_id, 4831 iocb->u.isp24.port_name, 4832 iocb->u.isp24.u.plogi.node_name, 4833 pla, 0); 4834 else 4835 qla24xx_post_newsess_work(vha, &port_id, 4836 iocb->u.isp24.port_name, NULL, 4837 pla, 0); 4838 4839 goto out; 4840 } 4841 4842 if (sess->disc_state == DSC_UPD_FCPORT) { 4843 u16 sec; 4844 4845 /* 4846 * Remote port registration is still going on from 4847 * previous login. Allow it to finish before we 4848 * accept the new login. 4849 */ 4850 sess->next_disc_state = DSC_DELETE_PEND; 4851 sec = jiffies_to_msecs(jiffies - 4852 sess->jiffies_at_registration) / 1000; 4853 if (sess->sec_since_registration < sec && sec && 4854 !(sec % 5)) { 4855 sess->sec_since_registration = sec; 4856 ql_dbg(ql_dbg_disc, vha, 0xffff, 4857 "%s %8phC - Slow Rport registration (%d Sec)\n", 4858 __func__, sess->port_name, sec); 4859 } 4860 4861 if (!conflict_sess) { 4862 list_del(&pla->list); 4863 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4864 } 4865 4866 qlt_send_term_imm_notif(vha, iocb, 1); 4867 goto out; 4868 } 4869 4870 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4871 sess->d_id = port_id; 4872 sess->login_gen++; 4873 sess->loop_id = loop_id; 4874 4875 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4876 /* remote port has assigned Port ID */ 4877 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4878 vha->d_id = sess->d_id; 4879 4880 ql_dbg(ql_dbg_disc, vha, 0xffff, 4881 "%s %8phC - send port online\n", 4882 __func__, sess->port_name); 4883 4884 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4885 sess->d_id.b24); 4886 } 4887 4888 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4889 sess->fw_login_state = DSC_LS_PRLI_PEND; 4890 sess->local = 0; 4891 sess->loop_id = loop_id; 4892 sess->d_id = port_id; 4893 sess->fw_login_state = DSC_LS_PRLI_PEND; 4894 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4895 4896 if (wd3_lo & BIT_7) 4897 sess->conf_compl_supported = 1; 4898 4899 if ((wd3_lo & BIT_4) == 0) 4900 sess->port_type = FCT_INITIATOR; 4901 else 4902 sess->port_type = FCT_TARGET; 4903 4904 } else 4905 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4906 4907 4908 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4909 "%s %d %8phC DS %d\n", 4910 __func__, __LINE__, sess->port_name, sess->disc_state); 4911 4912 switch (sess->disc_state) { 4913 case DSC_DELETED: 4914 case DSC_LOGIN_PEND: 4915 qlt_plogi_ack_unref(vha, pla); 4916 break; 4917 4918 default: 4919 /* 4920 * Under normal circumstances we want to release nport handle 4921 * during LOGO process to avoid nport handle leaks inside FW. 4922 * The exception is when LOGO is done while another PLOGI with 4923 * the same nport handle is waiting as might be the case here. 4924 * Note: there is always a possibily of a race where session 4925 * deletion has already started for other reasons (e.g. ACL 4926 * removal) and now PLOGI arrives: 4927 * 1. if PLOGI arrived in FW after nport handle has been freed, 4928 * FW must have assigned this PLOGI a new/same handle and we 4929 * can proceed ACK'ing it as usual when session deletion 4930 * completes. 4931 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4932 * bit reached it, the handle has now been released. We'll 4933 * get an error when we ACK this PLOGI. Nothing will be sent 4934 * back to initiator. Initiator should eventually retry 4935 * PLOGI and situation will correct itself. 4936 */ 4937 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4938 (sess->d_id.b24 == port_id.b24)); 4939 4940 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4941 "%s %d %8phC post del sess\n", 4942 __func__, __LINE__, sess->port_name); 4943 4944 4945 qlt_schedule_sess_for_deletion(sess); 4946 break; 4947 } 4948 out: 4949 return res; 4950 } 4951 4952 /* 4953 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4954 */ 4955 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4956 struct imm_ntfy_from_isp *iocb) 4957 { 4958 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4959 struct qla_hw_data *ha = vha->hw; 4960 struct fc_port *sess = NULL, *conflict_sess = NULL; 4961 uint64_t wwn; 4962 port_id_t port_id; 4963 uint16_t loop_id; 4964 uint16_t wd3_lo; 4965 int res = 0; 4966 unsigned long flags; 4967 4968 lockdep_assert_held(&ha->hardware_lock); 4969 4970 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4971 4972 port_id.b.domain = iocb->u.isp24.port_id[2]; 4973 port_id.b.area = iocb->u.isp24.port_id[1]; 4974 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4975 port_id.b.rsvd_1 = 0; 4976 4977 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4978 4979 ql_dbg(ql_dbg_disc, vha, 0xf026, 4980 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4981 vha->vp_idx, iocb->u.isp24.port_id[2], 4982 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4983 iocb->u.isp24.status_subcode, loop_id, 4984 iocb->u.isp24.port_name); 4985 4986 /* res = 1 means ack at the end of thread 4987 * res = 0 means ack async/later. 4988 */ 4989 switch (iocb->u.isp24.status_subcode) { 4990 case ELS_PLOGI: 4991 res = qlt_handle_login(vha, iocb); 4992 break; 4993 4994 case ELS_PRLI: 4995 if (N2N_TOPO(ha)) { 4996 sess = qla2x00_find_fcport_by_wwpn(vha, 4997 iocb->u.isp24.port_name, 1); 4998 4999 if (vha->hw->flags.edif_enabled && sess && 5000 (!(sess->flags & FCF_FCSP_DEVICE) || 5001 !sess->edif.authok)) { 5002 ql_dbg(ql_dbg_disc, vha, 0xffff, 5003 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 5004 __func__, __LINE__, iocb->u.isp24.port_name); 5005 qlt_send_term_imm_notif(vha, iocb, 1); 5006 break; 5007 } 5008 5009 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5010 ql_dbg(ql_dbg_disc, vha, 0xffff, 5011 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5012 __func__, __LINE__, 5013 iocb->u.isp24.port_name); 5014 qlt_send_term_imm_notif(vha, iocb, 1); 5015 break; 5016 } 5017 5018 res = qlt_handle_login(vha, iocb); 5019 break; 5020 } 5021 5022 if (IS_SW_RESV_ADDR(port_id)) { 5023 res = 1; 5024 break; 5025 } 5026 5027 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5028 5029 if (wwn) { 5030 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5031 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5032 loop_id, &conflict_sess); 5033 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5034 } 5035 5036 if (conflict_sess) { 5037 switch (conflict_sess->disc_state) { 5038 case DSC_DELETED: 5039 case DSC_DELETE_PEND: 5040 break; 5041 default: 5042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5043 "PRLI with conflicting sess %p port %8phC\n", 5044 conflict_sess, conflict_sess->port_name); 5045 conflict_sess->fw_login_state = 5046 DSC_LS_PORT_UNAVAIL; 5047 qlt_send_term_imm_notif(vha, iocb, 1); 5048 res = 0; 5049 break; 5050 } 5051 } 5052 5053 if (sess != NULL) { 5054 bool delete = false; 5055 int sec; 5056 5057 if (vha->hw->flags.edif_enabled && sess && 5058 (!(sess->flags & FCF_FCSP_DEVICE) || 5059 !sess->edif.authok)) { 5060 ql_dbg(ql_dbg_disc, vha, 0xffff, 5061 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5062 __func__, __LINE__, iocb->u.isp24.port_name); 5063 qlt_send_term_imm_notif(vha, iocb, 1); 5064 break; 5065 } 5066 5067 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5068 switch (sess->fw_login_state) { 5069 case DSC_LS_PLOGI_PEND: 5070 case DSC_LS_PLOGI_COMP: 5071 case DSC_LS_PRLI_COMP: 5072 break; 5073 default: 5074 delete = true; 5075 break; 5076 } 5077 5078 switch (sess->disc_state) { 5079 case DSC_UPD_FCPORT: 5080 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5081 flags); 5082 5083 sec = jiffies_to_msecs(jiffies - 5084 sess->jiffies_at_registration)/1000; 5085 if (sess->sec_since_registration < sec && sec && 5086 !(sec % 5)) { 5087 sess->sec_since_registration = sec; 5088 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5089 "%s %8phC : Slow Rport registration(%d Sec)\n", 5090 __func__, sess->port_name, sec); 5091 } 5092 qlt_send_term_imm_notif(vha, iocb, 1); 5093 return 0; 5094 5095 case DSC_LOGIN_PEND: 5096 case DSC_GPDB: 5097 case DSC_LOGIN_COMPLETE: 5098 case DSC_ADISC: 5099 delete = false; 5100 break; 5101 default: 5102 break; 5103 } 5104 5105 if (delete) { 5106 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5107 flags); 5108 /* 5109 * Impatient initiator sent PRLI before last 5110 * PLOGI could finish. Will force him to re-try, 5111 * while last one finishes. 5112 */ 5113 ql_log(ql_log_warn, sess->vha, 0xf095, 5114 "sess %p PRLI received, before plogi ack.\n", 5115 sess); 5116 qlt_send_term_imm_notif(vha, iocb, 1); 5117 res = 0; 5118 break; 5119 } 5120 5121 /* 5122 * This shouldn't happen under normal circumstances, 5123 * since we have deleted the old session during PLOGI 5124 */ 5125 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5126 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5127 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5128 5129 sess->local = 0; 5130 sess->loop_id = loop_id; 5131 sess->d_id = port_id; 5132 sess->fw_login_state = DSC_LS_PRLI_PEND; 5133 5134 if (wd3_lo & BIT_7) 5135 sess->conf_compl_supported = 1; 5136 5137 if ((wd3_lo & BIT_4) == 0) 5138 sess->port_type = FCT_INITIATOR; 5139 else 5140 sess->port_type = FCT_TARGET; 5141 5142 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5143 } 5144 res = 1; /* send notify ack */ 5145 5146 /* Make session global (not used in fabric mode) */ 5147 if (ha->current_topology != ISP_CFG_F) { 5148 if (sess) { 5149 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5150 "%s %d %8phC post nack\n", 5151 __func__, __LINE__, sess->port_name); 5152 qla24xx_post_nack_work(vha, sess, iocb, 5153 SRB_NACK_PRLI); 5154 res = 0; 5155 } else { 5156 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5157 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5158 qla2xxx_wake_dpc(vha); 5159 } 5160 } else { 5161 if (sess) { 5162 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5163 "%s %d %8phC post nack\n", 5164 __func__, __LINE__, sess->port_name); 5165 qla24xx_post_nack_work(vha, sess, iocb, 5166 SRB_NACK_PRLI); 5167 res = 0; 5168 } 5169 } 5170 break; 5171 5172 case ELS_TPRLO: 5173 if (le16_to_cpu(iocb->u.isp24.flags) & 5174 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5175 loop_id = 0xFFFF; 5176 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5177 res = 1; 5178 break; 5179 } 5180 fallthrough; 5181 case ELS_LOGO: 5182 case ELS_PRLO: 5183 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5184 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5185 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5186 5187 if (sess) { 5188 sess->login_gen++; 5189 sess->fw_login_state = DSC_LS_LOGO_PEND; 5190 sess->logo_ack_needed = 1; 5191 memcpy(sess->iocb, iocb, IOCB_SIZE); 5192 } 5193 5194 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5195 5196 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5197 "%s: logo %llx res %d sess %p ", 5198 __func__, wwn, res, sess); 5199 if (res == 0) { 5200 /* 5201 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5202 * for LOGO_ACK & sess delete 5203 */ 5204 BUG_ON(!sess); 5205 res = 0; 5206 } else { 5207 /* cmd did not go to upper layer. */ 5208 if (sess) { 5209 qlt_schedule_sess_for_deletion(sess); 5210 res = 0; 5211 } 5212 /* else logo will be ack */ 5213 } 5214 break; 5215 case ELS_PDISC: 5216 case ELS_ADISC: 5217 { 5218 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5219 5220 if (tgt->link_reinit_iocb_pending) { 5221 qlt_send_notify_ack(ha->base_qpair, 5222 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5223 tgt->link_reinit_iocb_pending = 0; 5224 } 5225 5226 sess = qla2x00_find_fcport_by_wwpn(vha, 5227 iocb->u.isp24.port_name, 1); 5228 if (sess) { 5229 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5230 "sess %p lid %d|%d DS %d LS %d\n", 5231 sess, sess->loop_id, loop_id, 5232 sess->disc_state, sess->fw_login_state); 5233 } 5234 5235 res = 1; /* send notify ack */ 5236 break; 5237 } 5238 5239 case ELS_FLOGI: /* should never happen */ 5240 default: 5241 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5242 "qla_target(%d): Unsupported ELS command %x " 5243 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5244 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5245 break; 5246 } 5247 5248 ql_dbg(ql_dbg_disc, vha, 0xf026, 5249 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5250 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5251 5252 return res; 5253 } 5254 5255 /* 5256 * ha->hardware_lock supposed to be held on entry. 5257 * Might drop it, then reacquire. 5258 */ 5259 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5260 struct imm_ntfy_from_isp *iocb) 5261 { 5262 struct qla_hw_data *ha = vha->hw; 5263 uint32_t add_flags = 0; 5264 int send_notify_ack = 1; 5265 uint16_t status; 5266 5267 lockdep_assert_held(&ha->hardware_lock); 5268 5269 status = le16_to_cpu(iocb->u.isp2x.status); 5270 switch (status) { 5271 case IMM_NTFY_LIP_RESET: 5272 { 5273 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5274 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5275 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5276 iocb->u.isp24.status_subcode); 5277 5278 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5279 send_notify_ack = 0; 5280 break; 5281 } 5282 5283 case IMM_NTFY_LIP_LINK_REINIT: 5284 { 5285 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5286 5287 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5288 "qla_target(%d): LINK REINIT (loop %#x, " 5289 "subcode %x)\n", vha->vp_idx, 5290 le16_to_cpu(iocb->u.isp24.nport_handle), 5291 iocb->u.isp24.status_subcode); 5292 if (tgt->link_reinit_iocb_pending) { 5293 qlt_send_notify_ack(ha->base_qpair, 5294 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5295 } 5296 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5297 tgt->link_reinit_iocb_pending = 1; 5298 /* 5299 * QLogic requires to wait after LINK REINIT for possible 5300 * PDISC or ADISC ELS commands 5301 */ 5302 send_notify_ack = 0; 5303 break; 5304 } 5305 5306 case IMM_NTFY_PORT_LOGOUT: 5307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5308 "qla_target(%d): Port logout (loop " 5309 "%#x, subcode %x)\n", vha->vp_idx, 5310 le16_to_cpu(iocb->u.isp24.nport_handle), 5311 iocb->u.isp24.status_subcode); 5312 5313 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5314 send_notify_ack = 0; 5315 /* The sessions will be cleared in the callback, if needed */ 5316 break; 5317 5318 case IMM_NTFY_GLBL_TPRLO: 5319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5320 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5321 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5322 send_notify_ack = 0; 5323 /* The sessions will be cleared in the callback, if needed */ 5324 break; 5325 5326 case IMM_NTFY_PORT_CONFIG: 5327 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5328 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5329 status); 5330 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5331 send_notify_ack = 0; 5332 /* The sessions will be cleared in the callback, if needed */ 5333 break; 5334 5335 case IMM_NTFY_GLBL_LOGO: 5336 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5337 "qla_target(%d): Link failure detected\n", 5338 vha->vp_idx); 5339 /* I_T nexus loss */ 5340 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5341 send_notify_ack = 0; 5342 break; 5343 5344 case IMM_NTFY_IOCB_OVERFLOW: 5345 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5346 "qla_target(%d): Cannot provide requested " 5347 "capability (IOCB overflowed the immediate notify " 5348 "resource count)\n", vha->vp_idx); 5349 break; 5350 5351 case IMM_NTFY_ABORT_TASK: 5352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5353 "qla_target(%d): Abort Task (S %08x I %#x -> " 5354 "L %#x)\n", vha->vp_idx, 5355 le16_to_cpu(iocb->u.isp2x.seq_id), 5356 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5357 le16_to_cpu(iocb->u.isp2x.lun)); 5358 if (qlt_abort_task(vha, iocb) == 0) 5359 send_notify_ack = 0; 5360 break; 5361 5362 case IMM_NTFY_RESOURCE: 5363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5364 "qla_target(%d): Out of resources, host %ld\n", 5365 vha->vp_idx, vha->host_no); 5366 break; 5367 5368 case IMM_NTFY_MSG_RX: 5369 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5370 "qla_target(%d): Immediate notify task %x\n", 5371 vha->vp_idx, iocb->u.isp2x.task_flags); 5372 break; 5373 5374 case IMM_NTFY_ELS: 5375 if (qlt_24xx_handle_els(vha, iocb) == 0) 5376 send_notify_ack = 0; 5377 break; 5378 default: 5379 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5380 "qla_target(%d): Received unknown immediate " 5381 "notify status %x\n", vha->vp_idx, status); 5382 break; 5383 } 5384 5385 if (send_notify_ack) 5386 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5387 0, 0); 5388 } 5389 5390 /* 5391 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5392 * This function sends busy to ISP 2xxx or 24xx. 5393 */ 5394 static int __qlt_send_busy(struct qla_qpair *qpair, 5395 struct atio_from_isp *atio, uint16_t status) 5396 { 5397 struct scsi_qla_host *vha = qpair->vha; 5398 struct ctio7_to_24xx *ctio24; 5399 struct qla_hw_data *ha = vha->hw; 5400 request_t *pkt; 5401 struct fc_port *sess = NULL; 5402 unsigned long flags; 5403 u16 temp; 5404 port_id_t id; 5405 5406 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5407 5408 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5409 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5410 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5411 if (!sess) { 5412 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5413 return 0; 5414 } 5415 /* Sending marker isn't necessary, since we called from ISR */ 5416 5417 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5418 if (!pkt) { 5419 ql_dbg(ql_dbg_io, vha, 0x3063, 5420 "qla_target(%d): %s failed: unable to allocate " 5421 "request packet", vha->vp_idx, __func__); 5422 return -ENOMEM; 5423 } 5424 5425 qpair->tgt_counters.num_q_full_sent++; 5426 pkt->entry_count = 1; 5427 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5428 5429 ctio24 = (struct ctio7_to_24xx *)pkt; 5430 ctio24->entry_type = CTIO_TYPE7; 5431 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5432 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5433 ctio24->vp_index = vha->vp_idx; 5434 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5435 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5436 temp = (atio->u.isp24.attr << 9) | 5437 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5438 CTIO7_FLAGS_DONT_RET_CTIO; 5439 ctio24->u.status1.flags = cpu_to_le16(temp); 5440 /* 5441 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5442 * if the explicit conformation is used. 5443 */ 5444 ctio24->u.status1.ox_id = 5445 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5446 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5447 5448 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5449 5450 if (ctio24->u.status1.residual != 0) 5451 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5452 5453 /* Memory Barrier */ 5454 wmb(); 5455 if (qpair->reqq_start_iocbs) 5456 qpair->reqq_start_iocbs(qpair); 5457 else 5458 qla2x00_start_iocbs(vha, qpair->req); 5459 return 0; 5460 } 5461 5462 /* 5463 * This routine is used to allocate a command for either a QFull condition 5464 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5465 * out previously. 5466 */ 5467 static void 5468 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5469 struct atio_from_isp *atio, uint16_t status, int qfull) 5470 { 5471 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5472 struct qla_hw_data *ha = vha->hw; 5473 struct fc_port *sess; 5474 struct qla_tgt_cmd *cmd; 5475 unsigned long flags; 5476 5477 if (unlikely(tgt->tgt_stop)) { 5478 ql_dbg(ql_dbg_io, vha, 0x300a, 5479 "New command while device %p is shutting down\n", tgt); 5480 return; 5481 } 5482 5483 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5484 vha->hw->tgt.num_qfull_cmds_dropped++; 5485 if (vha->hw->tgt.num_qfull_cmds_dropped > 5486 vha->qla_stats.stat_max_qfull_cmds_dropped) 5487 vha->qla_stats.stat_max_qfull_cmds_dropped = 5488 vha->hw->tgt.num_qfull_cmds_dropped; 5489 5490 ql_dbg(ql_dbg_io, vha, 0x3068, 5491 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5492 vha->vp_idx, __func__, 5493 vha->hw->tgt.num_qfull_cmds_dropped); 5494 5495 qlt_chk_exch_leak_thresh_hold(vha); 5496 return; 5497 } 5498 5499 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5500 (vha, atio->u.isp24.fcp_hdr.s_id); 5501 if (!sess) 5502 return; 5503 5504 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5505 if (!cmd) { 5506 ql_dbg(ql_dbg_io, vha, 0x3009, 5507 "qla_target(%d): %s: Allocation of cmd failed\n", 5508 vha->vp_idx, __func__); 5509 5510 vha->hw->tgt.num_qfull_cmds_dropped++; 5511 if (vha->hw->tgt.num_qfull_cmds_dropped > 5512 vha->qla_stats.stat_max_qfull_cmds_dropped) 5513 vha->qla_stats.stat_max_qfull_cmds_dropped = 5514 vha->hw->tgt.num_qfull_cmds_dropped; 5515 5516 qlt_chk_exch_leak_thresh_hold(vha); 5517 return; 5518 } 5519 5520 qlt_incr_num_pend_cmds(vha); 5521 INIT_LIST_HEAD(&cmd->cmd_list); 5522 memcpy(&cmd->atio, atio, sizeof(*atio)); 5523 5524 cmd->tgt = vha->vha_tgt.qla_tgt; 5525 cmd->vha = vha; 5526 cmd->reset_count = ha->base_qpair->chip_reset; 5527 cmd->q_full = 1; 5528 cmd->qpair = ha->base_qpair; 5529 5530 if (qfull) { 5531 cmd->q_full = 1; 5532 /* NOTE: borrowing the state field to carry the status */ 5533 cmd->state = status; 5534 } else 5535 cmd->term_exchg = 1; 5536 5537 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5538 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5539 5540 vha->hw->tgt.num_qfull_cmds_alloc++; 5541 if (vha->hw->tgt.num_qfull_cmds_alloc > 5542 vha->qla_stats.stat_max_qfull_cmds_alloc) 5543 vha->qla_stats.stat_max_qfull_cmds_alloc = 5544 vha->hw->tgt.num_qfull_cmds_alloc; 5545 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5546 } 5547 5548 int 5549 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5550 { 5551 struct scsi_qla_host *vha = qpair->vha; 5552 struct qla_hw_data *ha = vha->hw; 5553 unsigned long flags; 5554 struct qla_tgt_cmd *cmd, *tcmd; 5555 struct list_head free_list, q_full_list; 5556 int rc = 0; 5557 5558 if (list_empty(&ha->tgt.q_full_list)) 5559 return 0; 5560 5561 INIT_LIST_HEAD(&free_list); 5562 INIT_LIST_HEAD(&q_full_list); 5563 5564 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5565 if (list_empty(&ha->tgt.q_full_list)) { 5566 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5567 return 0; 5568 } 5569 5570 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5571 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5572 5573 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5574 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5575 if (cmd->q_full) 5576 /* cmd->state is a borrowed field to hold status */ 5577 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5578 else if (cmd->term_exchg) 5579 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5580 5581 if (rc == -ENOMEM) 5582 break; 5583 5584 if (cmd->q_full) 5585 ql_dbg(ql_dbg_io, vha, 0x3006, 5586 "%s: busy sent for ox_id[%04x]\n", __func__, 5587 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5588 else if (cmd->term_exchg) 5589 ql_dbg(ql_dbg_io, vha, 0x3007, 5590 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5591 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5592 else 5593 ql_dbg(ql_dbg_io, vha, 0x3008, 5594 "%s: Unexpected cmd in QFull list %p\n", __func__, 5595 cmd); 5596 5597 list_move_tail(&cmd->cmd_list, &free_list); 5598 5599 /* piggy back on hardware_lock for protection */ 5600 vha->hw->tgt.num_qfull_cmds_alloc--; 5601 } 5602 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5603 5604 cmd = NULL; 5605 5606 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5607 list_del(&cmd->cmd_list); 5608 /* This cmd was never sent to TCM. There is no need 5609 * to schedule free or call free_cmd 5610 */ 5611 qlt_free_cmd(cmd); 5612 } 5613 5614 if (!list_empty(&q_full_list)) { 5615 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5616 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5617 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5618 } 5619 5620 return rc; 5621 } 5622 5623 static void 5624 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5625 uint16_t status) 5626 { 5627 int rc = 0; 5628 struct scsi_qla_host *vha = qpair->vha; 5629 5630 rc = __qlt_send_busy(qpair, atio, status); 5631 if (rc == -ENOMEM) 5632 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5633 } 5634 5635 static int 5636 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5637 struct atio_from_isp *atio, uint8_t ha_locked) 5638 { 5639 struct qla_hw_data *ha = vha->hw; 5640 unsigned long flags; 5641 5642 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5643 return 0; 5644 5645 if (!ha_locked) 5646 spin_lock_irqsave(&ha->hardware_lock, flags); 5647 qlt_send_busy(qpair, atio, qla_sam_status); 5648 if (!ha_locked) 5649 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5650 5651 return 1; 5652 } 5653 5654 /* ha->hardware_lock supposed to be held on entry */ 5655 /* called via callback from qla2xxx */ 5656 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5657 struct atio_from_isp *atio, uint8_t ha_locked) 5658 { 5659 struct qla_hw_data *ha = vha->hw; 5660 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5661 int rc; 5662 unsigned long flags = 0; 5663 5664 if (unlikely(tgt == NULL)) { 5665 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5666 "ATIO pkt, but no tgt (ha %p)", ha); 5667 return; 5668 } 5669 /* 5670 * In tgt_stop mode we also should allow all requests to pass. 5671 * Otherwise, some commands can stuck. 5672 */ 5673 5674 tgt->atio_irq_cmd_count++; 5675 5676 switch (atio->u.raw.entry_type) { 5677 case ATIO_TYPE7: 5678 if (unlikely(atio->u.isp24.exchange_addr == 5679 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5680 ql_dbg(ql_dbg_io, vha, 0x3065, 5681 "qla_target(%d): ATIO_TYPE7 " 5682 "received with UNKNOWN exchange address, " 5683 "sending QUEUE_FULL\n", vha->vp_idx); 5684 if (!ha_locked) 5685 spin_lock_irqsave(&ha->hardware_lock, flags); 5686 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5687 if (!ha_locked) 5688 spin_unlock_irqrestore(&ha->hardware_lock, 5689 flags); 5690 break; 5691 } 5692 5693 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5694 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5695 atio, ha_locked); 5696 if (rc != 0) { 5697 tgt->atio_irq_cmd_count--; 5698 return; 5699 } 5700 rc = qlt_handle_cmd_for_atio(vha, atio); 5701 } else { 5702 rc = qlt_handle_task_mgmt(vha, atio); 5703 } 5704 if (unlikely(rc != 0)) { 5705 if (!ha_locked) 5706 spin_lock_irqsave(&ha->hardware_lock, flags); 5707 switch (rc) { 5708 case -ENODEV: 5709 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5710 "qla_target: Unable to send command to target\n"); 5711 break; 5712 case -EBADF: 5713 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5714 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5715 qlt_send_term_exchange(ha->base_qpair, NULL, 5716 atio, 1, 0); 5717 break; 5718 case -EBUSY: 5719 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5720 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5721 vha->vp_idx); 5722 qlt_send_busy(ha->base_qpair, atio, 5723 tc_sam_status); 5724 break; 5725 default: 5726 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5727 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5728 vha->vp_idx); 5729 qlt_send_busy(ha->base_qpair, atio, 5730 qla_sam_status); 5731 break; 5732 } 5733 if (!ha_locked) 5734 spin_unlock_irqrestore(&ha->hardware_lock, 5735 flags); 5736 } 5737 break; 5738 5739 case IMMED_NOTIFY_TYPE: 5740 { 5741 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5742 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5743 "qla_target(%d): Received ATIO packet %x " 5744 "with error status %x\n", vha->vp_idx, 5745 atio->u.raw.entry_type, 5746 atio->u.isp2x.entry_status); 5747 break; 5748 } 5749 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5750 5751 if (!ha_locked) 5752 spin_lock_irqsave(&ha->hardware_lock, flags); 5753 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5754 if (!ha_locked) 5755 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5756 break; 5757 } 5758 5759 default: 5760 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5761 "qla_target(%d): Received unknown ATIO atio " 5762 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5763 break; 5764 } 5765 5766 tgt->atio_irq_cmd_count--; 5767 } 5768 5769 /* 5770 * qpair lock is assume to be held 5771 * rc = 0 : send terminate & abts respond 5772 * rc != 0: do not send term & abts respond 5773 */ 5774 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5775 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5776 { 5777 struct qla_hw_data *ha = vha->hw; 5778 int rc = 0; 5779 5780 /* 5781 * Detect unresolved exchange. If the same ABTS is unable 5782 * to terminate an existing command and the same ABTS loops 5783 * between FW & Driver, then force FW dump. Under 1 jiff, 5784 * we should see multiple loops. 5785 */ 5786 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5787 qpair->retry_term_jiff == jiffies) { 5788 /* found existing exchange */ 5789 qpair->retry_term_cnt++; 5790 if (qpair->retry_term_cnt >= 5) { 5791 rc = -EIO; 5792 qpair->retry_term_cnt = 0; 5793 ql_log(ql_log_warn, vha, 0xffff, 5794 "Unable to send ABTS Respond. Dumping firmware.\n"); 5795 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5796 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5797 5798 if (qpair == ha->base_qpair) 5799 ha->isp_ops->fw_dump(vha); 5800 else 5801 qla2xxx_dump_fw(vha); 5802 5803 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5804 qla2xxx_wake_dpc(vha); 5805 } 5806 } else if (qpair->retry_term_jiff != jiffies) { 5807 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5808 qpair->retry_term_cnt = 0; 5809 qpair->retry_term_jiff = jiffies; 5810 } 5811 5812 return rc; 5813 } 5814 5815 5816 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5817 struct rsp_que *rsp, response_t *pkt) 5818 { 5819 struct abts_resp_from_24xx_fw *entry = 5820 (struct abts_resp_from_24xx_fw *)pkt; 5821 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5822 struct qla_tgt_mgmt_cmd *mcmd; 5823 struct qla_hw_data *ha = vha->hw; 5824 5825 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5826 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5827 ql_dbg(ql_dbg_async, vha, 0xe064, 5828 "qla_target(%d): ABTS Comp without mcmd\n", 5829 vha->vp_idx); 5830 return; 5831 } 5832 5833 if (mcmd) 5834 vha = mcmd->vha; 5835 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5836 5837 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5838 "ABTS_RESP_24XX: compl_status %x\n", 5839 entry->compl_status); 5840 5841 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5842 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5843 le32_to_cpu(entry->error_subcode2) == 0) { 5844 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5845 ha->tgt.tgt_ops->free_mcmd(mcmd); 5846 return; 5847 } 5848 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5849 pkt, mcmd); 5850 } else { 5851 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5852 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5853 vha->vp_idx, entry->compl_status, 5854 entry->error_subcode1, 5855 entry->error_subcode2); 5856 ha->tgt.tgt_ops->free_mcmd(mcmd); 5857 } 5858 } else if (mcmd) { 5859 ha->tgt.tgt_ops->free_mcmd(mcmd); 5860 } 5861 } 5862 5863 /* ha->hardware_lock supposed to be held on entry */ 5864 /* called via callback from qla2xxx */ 5865 static void qlt_response_pkt(struct scsi_qla_host *vha, 5866 struct rsp_que *rsp, response_t *pkt) 5867 { 5868 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5869 5870 if (unlikely(tgt == NULL)) { 5871 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5872 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5873 vha->vp_idx, pkt->entry_type, vha->hw); 5874 return; 5875 } 5876 5877 /* 5878 * In tgt_stop mode we also should allow all requests to pass. 5879 * Otherwise, some commands can stuck. 5880 */ 5881 5882 switch (pkt->entry_type) { 5883 case CTIO_CRC2: 5884 case CTIO_TYPE7: 5885 { 5886 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5887 5888 qlt_do_ctio_completion(vha, rsp, entry->handle, 5889 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5890 entry); 5891 break; 5892 } 5893 5894 case ACCEPT_TGT_IO_TYPE: 5895 { 5896 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5897 int rc; 5898 5899 if (atio->u.isp2x.status != 5900 cpu_to_le16(ATIO_CDB_VALID)) { 5901 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5902 "qla_target(%d): ATIO with error " 5903 "status %x received\n", vha->vp_idx, 5904 le16_to_cpu(atio->u.isp2x.status)); 5905 break; 5906 } 5907 5908 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5909 if (rc != 0) 5910 return; 5911 5912 rc = qlt_handle_cmd_for_atio(vha, atio); 5913 if (unlikely(rc != 0)) { 5914 switch (rc) { 5915 case -ENODEV: 5916 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5917 "qla_target: Unable to send command to target\n"); 5918 break; 5919 case -EBADF: 5920 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5921 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5922 qlt_send_term_exchange(rsp->qpair, NULL, 5923 atio, 1, 0); 5924 break; 5925 case -EBUSY: 5926 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5927 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5928 vha->vp_idx); 5929 qlt_send_busy(rsp->qpair, atio, 5930 tc_sam_status); 5931 break; 5932 default: 5933 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5934 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5935 vha->vp_idx); 5936 qlt_send_busy(rsp->qpair, atio, 5937 qla_sam_status); 5938 break; 5939 } 5940 } 5941 } 5942 break; 5943 5944 case CONTINUE_TGT_IO_TYPE: 5945 { 5946 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5947 5948 qlt_do_ctio_completion(vha, rsp, entry->handle, 5949 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5950 entry); 5951 break; 5952 } 5953 5954 case CTIO_A64_TYPE: 5955 { 5956 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5957 5958 qlt_do_ctio_completion(vha, rsp, entry->handle, 5959 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5960 entry); 5961 break; 5962 } 5963 5964 case IMMED_NOTIFY_TYPE: 5965 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5966 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5967 break; 5968 5969 case NOTIFY_ACK_TYPE: 5970 if (tgt->notify_ack_expected > 0) { 5971 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5972 5973 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5974 "NOTIFY_ACK seq %08x status %x\n", 5975 le16_to_cpu(entry->u.isp2x.seq_id), 5976 le16_to_cpu(entry->u.isp2x.status)); 5977 tgt->notify_ack_expected--; 5978 if (entry->u.isp2x.status != 5979 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5980 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5981 "qla_target(%d): NOTIFY_ACK " 5982 "failed %x\n", vha->vp_idx, 5983 le16_to_cpu(entry->u.isp2x.status)); 5984 } 5985 } else { 5986 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5987 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5988 vha->vp_idx); 5989 } 5990 break; 5991 5992 case ABTS_RECV_24XX: 5993 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5994 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5995 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5996 break; 5997 5998 case ABTS_RESP_24XX: 5999 if (tgt->abts_resp_expected > 0) { 6000 qlt_handle_abts_completion(vha, rsp, pkt); 6001 } else { 6002 ql_dbg(ql_dbg_tgt, vha, 0xe064, 6003 "qla_target(%d): Unexpected ABTS_RESP_24XX " 6004 "received\n", vha->vp_idx); 6005 } 6006 break; 6007 6008 default: 6009 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6010 "qla_target(%d): Received unknown response pkt " 6011 "type %x\n", vha->vp_idx, pkt->entry_type); 6012 break; 6013 } 6014 6015 } 6016 6017 /* 6018 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6019 */ 6020 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6021 uint16_t *mailbox) 6022 { 6023 struct qla_hw_data *ha = vha->hw; 6024 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6025 int login_code; 6026 6027 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6028 return; 6029 6030 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6031 IS_QLA2100(ha)) 6032 return; 6033 /* 6034 * In tgt_stop mode we also should allow all requests to pass. 6035 * Otherwise, some commands can stuck. 6036 */ 6037 6038 6039 switch (code) { 6040 case MBA_RESET: /* Reset */ 6041 case MBA_SYSTEM_ERR: /* System Error */ 6042 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6043 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6045 "qla_target(%d): System error async event %#x " 6046 "occurred", vha->vp_idx, code); 6047 break; 6048 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6049 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6050 break; 6051 6052 case MBA_LOOP_UP: 6053 { 6054 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6055 "qla_target(%d): Async LOOP_UP occurred " 6056 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6057 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6058 if (tgt->link_reinit_iocb_pending) { 6059 qlt_send_notify_ack(ha->base_qpair, 6060 &tgt->link_reinit_iocb, 6061 0, 0, 0, 0, 0, 0); 6062 tgt->link_reinit_iocb_pending = 0; 6063 } 6064 break; 6065 } 6066 6067 case MBA_LIP_OCCURRED: 6068 case MBA_LOOP_DOWN: 6069 case MBA_LIP_RESET: 6070 case MBA_RSCN_UPDATE: 6071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6072 "qla_target(%d): Async event %#x occurred " 6073 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6074 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6075 break; 6076 6077 case MBA_REJECTED_FCP_CMD: 6078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6079 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6080 vha->vp_idx, 6081 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6082 6083 if (mailbox[3] == 1) { 6084 /* exchange starvation. */ 6085 vha->hw->exch_starvation++; 6086 if (vha->hw->exch_starvation > 5) { 6087 ql_log(ql_log_warn, vha, 0xd03a, 6088 "Exchange starvation-. Resetting RISC\n"); 6089 6090 vha->hw->exch_starvation = 0; 6091 if (IS_P3P_TYPE(vha->hw)) 6092 set_bit(FCOE_CTX_RESET_NEEDED, 6093 &vha->dpc_flags); 6094 else 6095 set_bit(ISP_ABORT_NEEDED, 6096 &vha->dpc_flags); 6097 qla2xxx_wake_dpc(vha); 6098 } 6099 } 6100 break; 6101 6102 case MBA_PORT_UPDATE: 6103 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6104 "qla_target(%d): Port update async event %#x " 6105 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6106 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6107 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6108 6109 login_code = mailbox[2]; 6110 if (login_code == 0x4) { 6111 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6112 "Async MB 2: Got PLOGI Complete\n"); 6113 vha->hw->exch_starvation = 0; 6114 } else if (login_code == 0x7) 6115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6116 "Async MB 2: Port Logged Out\n"); 6117 break; 6118 default: 6119 break; 6120 } 6121 6122 } 6123 6124 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6125 uint16_t loop_id) 6126 { 6127 fc_port_t *fcport, *tfcp, *del; 6128 int rc; 6129 unsigned long flags; 6130 u8 newfcport = 0; 6131 6132 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6133 if (!fcport) { 6134 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6135 "qla_target(%d): Allocation of tmp FC port failed", 6136 vha->vp_idx); 6137 return NULL; 6138 } 6139 6140 fcport->loop_id = loop_id; 6141 6142 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6143 if (rc != QLA_SUCCESS) { 6144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6145 "qla_target(%d): Failed to retrieve fcport " 6146 "information -- get_port_database() returned %x " 6147 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6148 kfree(fcport); 6149 return NULL; 6150 } 6151 6152 del = NULL; 6153 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6154 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6155 6156 if (tfcp) { 6157 tfcp->d_id = fcport->d_id; 6158 tfcp->port_type = fcport->port_type; 6159 tfcp->supported_classes = fcport->supported_classes; 6160 tfcp->flags |= fcport->flags; 6161 tfcp->scan_state = QLA_FCPORT_FOUND; 6162 6163 del = fcport; 6164 fcport = tfcp; 6165 } else { 6166 if (vha->hw->current_topology == ISP_CFG_F) 6167 fcport->flags |= FCF_FABRIC_DEVICE; 6168 6169 list_add_tail(&fcport->list, &vha->vp_fcports); 6170 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6171 vha->fcport_count++; 6172 fcport->login_gen++; 6173 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6174 fcport->login_succ = 1; 6175 newfcport = 1; 6176 } 6177 6178 fcport->deleted = 0; 6179 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6180 6181 switch (vha->host->active_mode) { 6182 case MODE_INITIATOR: 6183 case MODE_DUAL: 6184 if (newfcport) { 6185 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6186 qla24xx_sched_upd_fcport(fcport); 6187 } else { 6188 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6189 "%s %d %8phC post gpsc fcp_cnt %d\n", 6190 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6191 qla24xx_post_gpsc_work(vha, fcport); 6192 } 6193 } 6194 break; 6195 6196 case MODE_TARGET: 6197 default: 6198 break; 6199 } 6200 if (del) 6201 qla2x00_free_fcport(del); 6202 6203 return fcport; 6204 } 6205 6206 /* Must be called under tgt_mutex */ 6207 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6208 be_id_t s_id) 6209 { 6210 struct fc_port *sess = NULL; 6211 fc_port_t *fcport = NULL; 6212 int rc, global_resets; 6213 uint16_t loop_id = 0; 6214 6215 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6216 /* 6217 * This is Domain Controller, so it should be 6218 * OK to drop SCSI commands from it. 6219 */ 6220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6221 "Unable to find initiator with S_ID %x:%x:%x", 6222 s_id.domain, s_id.area, s_id.al_pa); 6223 return NULL; 6224 } 6225 6226 mutex_lock(&vha->vha_tgt.tgt_mutex); 6227 6228 retry: 6229 global_resets = 6230 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6231 6232 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6233 if (rc != 0) { 6234 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6235 6236 ql_log(ql_log_info, vha, 0xf071, 6237 "qla_target(%d): Unable to find " 6238 "initiator with S_ID %x:%x:%x", 6239 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6240 6241 if (rc == -ENOENT) { 6242 qlt_port_logo_t logo; 6243 6244 logo.id = be_to_port_id(s_id); 6245 logo.cmd_count = 1; 6246 qlt_send_first_logo(vha, &logo); 6247 } 6248 6249 return NULL; 6250 } 6251 6252 fcport = qlt_get_port_database(vha, loop_id); 6253 if (!fcport) { 6254 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6255 return NULL; 6256 } 6257 6258 if (global_resets != 6259 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6260 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6261 "qla_target(%d): global reset during session discovery " 6262 "(counter was %d, new %d), retrying", vha->vp_idx, 6263 global_resets, 6264 atomic_read(&vha->vha_tgt. 6265 qla_tgt->tgt_global_resets_count)); 6266 goto retry; 6267 } 6268 6269 sess = qlt_create_sess(vha, fcport, true); 6270 6271 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6272 6273 return sess; 6274 } 6275 6276 static void qlt_abort_work(struct qla_tgt *tgt, 6277 struct qla_tgt_sess_work_param *prm) 6278 { 6279 struct scsi_qla_host *vha = tgt->vha; 6280 struct qla_hw_data *ha = vha->hw; 6281 struct fc_port *sess = NULL; 6282 unsigned long flags = 0, flags2 = 0; 6283 be_id_t s_id; 6284 int rc; 6285 6286 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6287 6288 if (tgt->tgt_stop) 6289 goto out_term2; 6290 6291 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6292 6293 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6294 if (!sess) { 6295 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6296 6297 sess = qlt_make_local_sess(vha, s_id); 6298 /* sess has got an extra creation ref */ 6299 6300 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6301 if (!sess) 6302 goto out_term2; 6303 } else { 6304 if (sess->deleted) { 6305 sess = NULL; 6306 goto out_term2; 6307 } 6308 6309 if (!kref_get_unless_zero(&sess->sess_kref)) { 6310 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6311 "%s: kref_get fail %8phC \n", 6312 __func__, sess->port_name); 6313 sess = NULL; 6314 goto out_term2; 6315 } 6316 } 6317 6318 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6319 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6320 6321 ha->tgt.tgt_ops->put_sess(sess); 6322 6323 if (rc != 0) 6324 goto out_term; 6325 return; 6326 6327 out_term2: 6328 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6329 6330 out_term: 6331 spin_lock_irqsave(&ha->hardware_lock, flags); 6332 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6333 FCP_TMF_REJECTED, false); 6334 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6335 } 6336 6337 static void qlt_sess_work_fn(struct work_struct *work) 6338 { 6339 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6340 struct scsi_qla_host *vha = tgt->vha; 6341 unsigned long flags; 6342 6343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6344 6345 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6346 while (!list_empty(&tgt->sess_works_list)) { 6347 struct qla_tgt_sess_work_param *prm = list_entry( 6348 tgt->sess_works_list.next, typeof(*prm), 6349 sess_works_list_entry); 6350 6351 /* 6352 * This work can be scheduled on several CPUs at time, so we 6353 * must delete the entry to eliminate double processing 6354 */ 6355 list_del(&prm->sess_works_list_entry); 6356 6357 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6358 6359 switch (prm->type) { 6360 case QLA_TGT_SESS_WORK_ABORT: 6361 qlt_abort_work(tgt, prm); 6362 break; 6363 default: 6364 BUG_ON(1); 6365 break; 6366 } 6367 6368 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6369 6370 kfree(prm); 6371 } 6372 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6373 } 6374 6375 /* Must be called under tgt_host_action_mutex */ 6376 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6377 { 6378 struct qla_tgt *tgt; 6379 int rc, i; 6380 struct qla_qpair_hint *h; 6381 6382 if (!QLA_TGT_MODE_ENABLED()) 6383 return 0; 6384 6385 if (!IS_TGT_MODE_CAPABLE(ha)) { 6386 ql_log(ql_log_warn, base_vha, 0xe070, 6387 "This adapter does not support target mode.\n"); 6388 return 0; 6389 } 6390 6391 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6392 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6393 6394 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6395 6396 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6397 if (!tgt) { 6398 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6399 "Unable to allocate struct qla_tgt\n"); 6400 return -ENOMEM; 6401 } 6402 6403 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6404 sizeof(struct qla_qpair_hint), 6405 GFP_KERNEL); 6406 if (!tgt->qphints) { 6407 kfree(tgt); 6408 ql_log(ql_log_warn, base_vha, 0x0197, 6409 "Unable to allocate qpair hints.\n"); 6410 return -ENOMEM; 6411 } 6412 6413 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6414 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6415 6416 rc = btree_init64(&tgt->lun_qpair_map); 6417 if (rc) { 6418 kfree(tgt->qphints); 6419 kfree(tgt); 6420 ql_log(ql_log_info, base_vha, 0x0198, 6421 "Unable to initialize lun_qpair_map btree\n"); 6422 return -EIO; 6423 } 6424 h = &tgt->qphints[0]; 6425 h->qpair = ha->base_qpair; 6426 INIT_LIST_HEAD(&h->hint_elem); 6427 h->cpuid = ha->base_qpair->cpuid; 6428 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6429 6430 for (i = 0; i < ha->max_qpairs; i++) { 6431 unsigned long flags; 6432 6433 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6434 6435 h = &tgt->qphints[i + 1]; 6436 INIT_LIST_HEAD(&h->hint_elem); 6437 if (qpair) { 6438 h->qpair = qpair; 6439 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6440 list_add_tail(&h->hint_elem, &qpair->hints_list); 6441 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6442 h->cpuid = qpair->cpuid; 6443 } 6444 } 6445 6446 tgt->ha = ha; 6447 tgt->vha = base_vha; 6448 init_waitqueue_head(&tgt->waitQ); 6449 spin_lock_init(&tgt->sess_work_lock); 6450 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6451 INIT_LIST_HEAD(&tgt->sess_works_list); 6452 atomic_set(&tgt->tgt_global_resets_count, 0); 6453 6454 base_vha->vha_tgt.qla_tgt = tgt; 6455 6456 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6457 "qla_target(%d): using 64 Bit PCI addressing", 6458 base_vha->vp_idx); 6459 /* 3 is reserved */ 6460 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6461 6462 mutex_lock(&qla_tgt_mutex); 6463 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6464 mutex_unlock(&qla_tgt_mutex); 6465 6466 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6467 ha->tgt.tgt_ops->add_target(base_vha); 6468 6469 return 0; 6470 } 6471 6472 /* Must be called under tgt_host_action_mutex */ 6473 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6474 { 6475 if (!vha->vha_tgt.qla_tgt) 6476 return 0; 6477 6478 if (vha->fc_vport) { 6479 qlt_release(vha->vha_tgt.qla_tgt); 6480 return 0; 6481 } 6482 6483 /* free left over qfull cmds */ 6484 qlt_init_term_exchange(vha); 6485 6486 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6487 vha->host_no, ha); 6488 qlt_release(vha->vha_tgt.qla_tgt); 6489 6490 return 0; 6491 } 6492 6493 void qla_remove_hostmap(struct qla_hw_data *ha) 6494 { 6495 struct scsi_qla_host *node; 6496 u32 key = 0; 6497 6498 btree_for_each_safe32(&ha->host_map, key, node) 6499 btree_remove32(&ha->host_map, key); 6500 6501 btree_destroy32(&ha->host_map); 6502 } 6503 6504 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6505 unsigned char *b) 6506 { 6507 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6508 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6509 put_unaligned_be64(wwpn, b); 6510 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6511 } 6512 6513 /** 6514 * qlt_lport_register - register lport with external module 6515 * 6516 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6517 * @phys_wwpn: physical port WWPN 6518 * @npiv_wwpn: NPIV WWPN 6519 * @npiv_wwnn: NPIV WWNN 6520 * @callback: lport initialization callback for tcm_qla2xxx code 6521 */ 6522 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6523 u64 npiv_wwpn, u64 npiv_wwnn, 6524 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6525 { 6526 struct qla_tgt *tgt; 6527 struct scsi_qla_host *vha; 6528 struct qla_hw_data *ha; 6529 struct Scsi_Host *host; 6530 unsigned long flags; 6531 int rc; 6532 u8 b[WWN_SIZE]; 6533 6534 mutex_lock(&qla_tgt_mutex); 6535 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6536 vha = tgt->vha; 6537 ha = vha->hw; 6538 6539 host = vha->host; 6540 if (!host) 6541 continue; 6542 6543 if (!(host->hostt->supported_mode & MODE_TARGET)) 6544 continue; 6545 6546 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6547 continue; 6548 6549 spin_lock_irqsave(&ha->hardware_lock, flags); 6550 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6551 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6552 host->host_no); 6553 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6554 continue; 6555 } 6556 if (tgt->tgt_stop) { 6557 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6558 host->host_no); 6559 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6560 continue; 6561 } 6562 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6563 6564 if (!scsi_host_get(host)) { 6565 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6566 "Unable to scsi_host_get() for" 6567 " qla2xxx scsi_host\n"); 6568 continue; 6569 } 6570 qlt_lport_dump(vha, phys_wwpn, b); 6571 6572 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6573 scsi_host_put(host); 6574 continue; 6575 } 6576 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6577 if (rc != 0) 6578 scsi_host_put(host); 6579 6580 mutex_unlock(&qla_tgt_mutex); 6581 return rc; 6582 } 6583 mutex_unlock(&qla_tgt_mutex); 6584 6585 return -ENODEV; 6586 } 6587 EXPORT_SYMBOL(qlt_lport_register); 6588 6589 /** 6590 * qlt_lport_deregister - Degister lport 6591 * 6592 * @vha: Registered scsi_qla_host pointer 6593 */ 6594 void qlt_lport_deregister(struct scsi_qla_host *vha) 6595 { 6596 struct qla_hw_data *ha = vha->hw; 6597 struct Scsi_Host *sh = vha->host; 6598 /* 6599 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6600 */ 6601 vha->vha_tgt.target_lport_ptr = NULL; 6602 ha->tgt.tgt_ops = NULL; 6603 /* 6604 * Release the Scsi_Host reference for the underlying qla2xxx host 6605 */ 6606 scsi_host_put(sh); 6607 } 6608 EXPORT_SYMBOL(qlt_lport_deregister); 6609 6610 /* Must be called under HW lock */ 6611 void qlt_set_mode(struct scsi_qla_host *vha) 6612 { 6613 switch (vha->qlini_mode) { 6614 case QLA2XXX_INI_MODE_DISABLED: 6615 case QLA2XXX_INI_MODE_EXCLUSIVE: 6616 vha->host->active_mode = MODE_TARGET; 6617 break; 6618 case QLA2XXX_INI_MODE_ENABLED: 6619 vha->host->active_mode = MODE_INITIATOR; 6620 break; 6621 case QLA2XXX_INI_MODE_DUAL: 6622 vha->host->active_mode = MODE_DUAL; 6623 break; 6624 default: 6625 break; 6626 } 6627 } 6628 6629 /* Must be called under HW lock */ 6630 static void qlt_clear_mode(struct scsi_qla_host *vha) 6631 { 6632 switch (vha->qlini_mode) { 6633 case QLA2XXX_INI_MODE_DISABLED: 6634 vha->host->active_mode = MODE_UNKNOWN; 6635 break; 6636 case QLA2XXX_INI_MODE_EXCLUSIVE: 6637 vha->host->active_mode = MODE_INITIATOR; 6638 break; 6639 case QLA2XXX_INI_MODE_ENABLED: 6640 case QLA2XXX_INI_MODE_DUAL: 6641 vha->host->active_mode = MODE_INITIATOR; 6642 break; 6643 default: 6644 break; 6645 } 6646 } 6647 6648 /* 6649 * qla_tgt_enable_vha - NO LOCK HELD 6650 * 6651 * host_reset, bring up w/ Target Mode Enabled 6652 */ 6653 void 6654 qlt_enable_vha(struct scsi_qla_host *vha) 6655 { 6656 struct qla_hw_data *ha = vha->hw; 6657 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6658 unsigned long flags; 6659 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6660 6661 if (!tgt) { 6662 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6663 "Unable to locate qla_tgt pointer from" 6664 " struct qla_hw_data\n"); 6665 dump_stack(); 6666 return; 6667 } 6668 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6669 return; 6670 6671 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6672 ha->tgt.num_act_qpairs = ha->max_qpairs; 6673 spin_lock_irqsave(&ha->hardware_lock, flags); 6674 tgt->tgt_stopped = 0; 6675 qlt_set_mode(vha); 6676 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6677 6678 mutex_lock(&ha->optrom_mutex); 6679 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6680 "%s.\n", __func__); 6681 if (vha->vp_idx) { 6682 qla24xx_disable_vp(vha); 6683 qla24xx_enable_vp(vha); 6684 } else { 6685 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6686 qla2xxx_wake_dpc(base_vha); 6687 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6688 QLA_SUCCESS); 6689 } 6690 mutex_unlock(&ha->optrom_mutex); 6691 } 6692 EXPORT_SYMBOL(qlt_enable_vha); 6693 6694 /* 6695 * qla_tgt_disable_vha - NO LOCK HELD 6696 * 6697 * Disable Target Mode and reset the adapter 6698 */ 6699 static void qlt_disable_vha(struct scsi_qla_host *vha) 6700 { 6701 struct qla_hw_data *ha = vha->hw; 6702 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6703 unsigned long flags; 6704 6705 if (!tgt) { 6706 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6707 "Unable to locate qla_tgt pointer from" 6708 " struct qla_hw_data\n"); 6709 dump_stack(); 6710 return; 6711 } 6712 6713 spin_lock_irqsave(&ha->hardware_lock, flags); 6714 qlt_clear_mode(vha); 6715 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6716 6717 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6718 qla2xxx_wake_dpc(vha); 6719 6720 /* 6721 * We are expecting the offline state. 6722 * QLA_FUNCTION_FAILED means that adapter is offline. 6723 */ 6724 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6725 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6726 "adapter is offline\n"); 6727 } 6728 6729 /* 6730 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6731 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6732 * members. 6733 */ 6734 void 6735 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6736 { 6737 vha->vha_tgt.qla_tgt = NULL; 6738 6739 mutex_init(&vha->vha_tgt.tgt_mutex); 6740 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6741 6742 qlt_clear_mode(vha); 6743 6744 /* 6745 * NOTE: Currently the value is kept the same for <24xx and 6746 * >=24xx ISPs. If it is necessary to change it, 6747 * the check should be added for specific ISPs, 6748 * assigning the value appropriately. 6749 */ 6750 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6751 6752 qlt_add_target(ha, vha); 6753 } 6754 6755 u8 6756 qlt_rff_id(struct scsi_qla_host *vha) 6757 { 6758 u8 fc4_feature = 0; 6759 /* 6760 * FC-4 Feature bit 0 indicates target functionality to the name server. 6761 */ 6762 if (qla_tgt_mode_enabled(vha)) { 6763 fc4_feature = BIT_0; 6764 } else if (qla_ini_mode_enabled(vha)) { 6765 fc4_feature = BIT_1; 6766 } else if (qla_dual_mode_enabled(vha)) 6767 fc4_feature = BIT_0 | BIT_1; 6768 6769 return fc4_feature; 6770 } 6771 6772 /* 6773 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6774 * @ha: HA context 6775 * 6776 * Beginning of ATIO ring has initialization control block already built 6777 * by nvram config routine. 6778 * 6779 * Returns 0 on success. 6780 */ 6781 void 6782 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6783 { 6784 struct qla_hw_data *ha = vha->hw; 6785 uint16_t cnt; 6786 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6787 6788 if (qla_ini_mode_enabled(vha)) 6789 return; 6790 6791 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6792 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6793 pkt++; 6794 } 6795 6796 } 6797 6798 /* 6799 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6800 * @ha: SCSI driver HA context 6801 */ 6802 void 6803 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6804 { 6805 struct qla_hw_data *ha = vha->hw; 6806 struct atio_from_isp *pkt; 6807 int cnt, i; 6808 6809 if (!ha->flags.fw_started) 6810 return; 6811 6812 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6813 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6814 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6815 cnt = pkt->u.raw.entry_count; 6816 6817 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6818 /* 6819 * This packet is corrupted. The header + payload 6820 * can not be trusted. There is no point in passing 6821 * it further up. 6822 */ 6823 ql_log(ql_log_warn, vha, 0xd03c, 6824 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6825 &pkt->u.isp24.fcp_hdr.s_id, 6826 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6827 pkt->u.isp24.exchange_addr, pkt); 6828 6829 adjust_corrupted_atio(pkt); 6830 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6831 ha_locked, 0); 6832 } else { 6833 qlt_24xx_atio_pkt_all_vps(vha, 6834 (struct atio_from_isp *)pkt, ha_locked); 6835 } 6836 6837 for (i = 0; i < cnt; i++) { 6838 ha->tgt.atio_ring_index++; 6839 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6840 ha->tgt.atio_ring_index = 0; 6841 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6842 } else 6843 ha->tgt.atio_ring_ptr++; 6844 6845 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6846 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6847 } 6848 wmb(); 6849 } 6850 6851 /* Adjust ring index */ 6852 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6853 } 6854 6855 void 6856 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6857 { 6858 struct qla_hw_data *ha = vha->hw; 6859 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6860 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6861 6862 if (!QLA_TGT_MODE_ENABLED()) 6863 return; 6864 6865 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6866 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6867 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6868 6869 if (ha->flags.msix_enabled) { 6870 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6871 if (IS_QLA2071(ha)) { 6872 /* 4 ports Baker: Enable Interrupt Handshake */ 6873 icb->msix_atio = 0; 6874 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6875 } else { 6876 icb->msix_atio = cpu_to_le16(msix->entry); 6877 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6878 } 6879 ql_dbg(ql_dbg_init, vha, 0xf072, 6880 "Registering ICB vector 0x%x for atio que.\n", 6881 msix->entry); 6882 } 6883 } else { 6884 /* INTx|MSI */ 6885 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6886 icb->msix_atio = 0; 6887 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6888 ql_dbg(ql_dbg_init, vha, 0xf072, 6889 "%s: Use INTx for ATIOQ.\n", __func__); 6890 } 6891 } 6892 } 6893 6894 void 6895 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6896 { 6897 struct qla_hw_data *ha = vha->hw; 6898 u32 tmp; 6899 6900 if (!QLA_TGT_MODE_ENABLED()) 6901 return; 6902 6903 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6904 if (!ha->tgt.saved_set) { 6905 /* We save only once */ 6906 ha->tgt.saved_exchange_count = nv->exchange_count; 6907 ha->tgt.saved_firmware_options_1 = 6908 nv->firmware_options_1; 6909 ha->tgt.saved_firmware_options_2 = 6910 nv->firmware_options_2; 6911 ha->tgt.saved_firmware_options_3 = 6912 nv->firmware_options_3; 6913 ha->tgt.saved_set = 1; 6914 } 6915 6916 if (qla_tgt_mode_enabled(vha)) 6917 nv->exchange_count = cpu_to_le16(0xFFFF); 6918 else /* dual */ 6919 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6920 6921 /* Enable target mode */ 6922 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6923 6924 /* Disable ini mode, if requested */ 6925 if (qla_tgt_mode_enabled(vha)) 6926 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6927 6928 /* Disable Full Login after LIP */ 6929 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6930 /* Enable initial LIP */ 6931 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6932 if (ql2xtgt_tape_enable) 6933 /* Enable FC Tape support */ 6934 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6935 else 6936 /* Disable FC Tape support */ 6937 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6938 6939 /* Disable Full Login after LIP */ 6940 nv->host_p &= cpu_to_le32(~BIT_10); 6941 6942 /* 6943 * clear BIT 15 explicitly as we have seen at least 6944 * a couple of instances where this was set and this 6945 * was causing the firmware to not be initialized. 6946 */ 6947 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6948 /* Enable target PRLI control */ 6949 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6950 6951 if (IS_QLA25XX(ha)) { 6952 /* Change Loop-prefer to Pt-Pt */ 6953 tmp = ~(BIT_4|BIT_5|BIT_6); 6954 nv->firmware_options_2 &= cpu_to_le32(tmp); 6955 tmp = P2P << 4; 6956 nv->firmware_options_2 |= cpu_to_le32(tmp); 6957 } 6958 } else { 6959 if (ha->tgt.saved_set) { 6960 nv->exchange_count = ha->tgt.saved_exchange_count; 6961 nv->firmware_options_1 = 6962 ha->tgt.saved_firmware_options_1; 6963 nv->firmware_options_2 = 6964 ha->tgt.saved_firmware_options_2; 6965 nv->firmware_options_3 = 6966 ha->tgt.saved_firmware_options_3; 6967 } 6968 return; 6969 } 6970 6971 if (ha->base_qpair->enable_class_2) { 6972 if (vha->flags.init_done) 6973 fc_host_supported_classes(vha->host) = 6974 FC_COS_CLASS2 | FC_COS_CLASS3; 6975 6976 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6977 } else { 6978 if (vha->flags.init_done) 6979 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6980 6981 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6982 } 6983 } 6984 6985 void 6986 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6987 struct init_cb_24xx *icb) 6988 { 6989 struct qla_hw_data *ha = vha->hw; 6990 6991 if (!QLA_TGT_MODE_ENABLED()) 6992 return; 6993 6994 if (ha->tgt.node_name_set) { 6995 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6996 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6997 } 6998 } 6999 7000 void 7001 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7002 { 7003 struct qla_hw_data *ha = vha->hw; 7004 u32 tmp; 7005 7006 if (!QLA_TGT_MODE_ENABLED()) 7007 return; 7008 7009 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7010 if (!ha->tgt.saved_set) { 7011 /* We save only once */ 7012 ha->tgt.saved_exchange_count = nv->exchange_count; 7013 ha->tgt.saved_firmware_options_1 = 7014 nv->firmware_options_1; 7015 ha->tgt.saved_firmware_options_2 = 7016 nv->firmware_options_2; 7017 ha->tgt.saved_firmware_options_3 = 7018 nv->firmware_options_3; 7019 ha->tgt.saved_set = 1; 7020 } 7021 7022 if (qla_tgt_mode_enabled(vha)) 7023 nv->exchange_count = cpu_to_le16(0xFFFF); 7024 else /* dual */ 7025 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7026 7027 /* Enable target mode */ 7028 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7029 7030 /* Disable ini mode, if requested */ 7031 if (qla_tgt_mode_enabled(vha)) 7032 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7033 /* Disable Full Login after LIP */ 7034 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7035 /* Enable initial LIP */ 7036 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7037 /* 7038 * clear BIT 15 explicitly as we have seen at 7039 * least a couple of instances where this was set 7040 * and this was causing the firmware to not be 7041 * initialized. 7042 */ 7043 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7044 if (ql2xtgt_tape_enable) 7045 /* Enable FC tape support */ 7046 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7047 else 7048 /* Disable FC tape support */ 7049 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7050 7051 /* Disable Full Login after LIP */ 7052 nv->host_p &= cpu_to_le32(~BIT_10); 7053 /* Enable target PRLI control */ 7054 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7055 7056 /* Change Loop-prefer to Pt-Pt */ 7057 tmp = ~(BIT_4|BIT_5|BIT_6); 7058 nv->firmware_options_2 &= cpu_to_le32(tmp); 7059 tmp = P2P << 4; 7060 nv->firmware_options_2 |= cpu_to_le32(tmp); 7061 } else { 7062 if (ha->tgt.saved_set) { 7063 nv->exchange_count = ha->tgt.saved_exchange_count; 7064 nv->firmware_options_1 = 7065 ha->tgt.saved_firmware_options_1; 7066 nv->firmware_options_2 = 7067 ha->tgt.saved_firmware_options_2; 7068 nv->firmware_options_3 = 7069 ha->tgt.saved_firmware_options_3; 7070 } 7071 return; 7072 } 7073 7074 if (ha->base_qpair->enable_class_2) { 7075 if (vha->flags.init_done) 7076 fc_host_supported_classes(vha->host) = 7077 FC_COS_CLASS2 | FC_COS_CLASS3; 7078 7079 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7080 } else { 7081 if (vha->flags.init_done) 7082 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7083 7084 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7085 } 7086 } 7087 7088 void 7089 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7090 struct init_cb_81xx *icb) 7091 { 7092 struct qla_hw_data *ha = vha->hw; 7093 7094 if (!QLA_TGT_MODE_ENABLED()) 7095 return; 7096 7097 if (ha->tgt.node_name_set) { 7098 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7099 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7100 } 7101 } 7102 7103 void 7104 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7105 { 7106 if (!QLA_TGT_MODE_ENABLED()) 7107 return; 7108 7109 ha->msix_count += 1; /* For ATIO Q */ 7110 } 7111 7112 7113 void 7114 qlt_modify_vp_config(struct scsi_qla_host *vha, 7115 struct vp_config_entry_24xx *vpmod) 7116 { 7117 /* enable target mode. Bit5 = 1 => disable */ 7118 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7119 vpmod->options_idx1 &= ~BIT_5; 7120 7121 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7122 if (qla_tgt_mode_enabled(vha)) 7123 vpmod->options_idx1 &= ~BIT_4; 7124 } 7125 7126 void 7127 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7128 { 7129 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7130 if (!QLA_TGT_MODE_ENABLED()) 7131 return; 7132 7133 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7134 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7135 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7136 } else { 7137 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7138 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7139 } 7140 7141 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7142 7143 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7144 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7145 qlt_unknown_atio_work_fn); 7146 7147 qlt_clear_mode(base_vha); 7148 7149 qlt_update_vp_map(base_vha, SET_VP_IDX); 7150 } 7151 7152 irqreturn_t 7153 qla83xx_msix_atio_q(int irq, void *dev_id) 7154 { 7155 struct rsp_que *rsp; 7156 scsi_qla_host_t *vha; 7157 struct qla_hw_data *ha; 7158 unsigned long flags; 7159 7160 rsp = (struct rsp_que *) dev_id; 7161 ha = rsp->hw; 7162 vha = pci_get_drvdata(ha->pdev); 7163 7164 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7165 7166 qlt_24xx_process_atio_queue(vha, 0); 7167 7168 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7169 7170 return IRQ_HANDLED; 7171 } 7172 7173 static void 7174 qlt_handle_abts_recv_work(struct work_struct *work) 7175 { 7176 struct qla_tgt_sess_op *op = container_of(work, 7177 struct qla_tgt_sess_op, work); 7178 scsi_qla_host_t *vha = op->vha; 7179 struct qla_hw_data *ha = vha->hw; 7180 unsigned long flags; 7181 7182 if (qla2x00_reset_active(vha) || 7183 (op->chip_reset != ha->base_qpair->chip_reset)) 7184 return; 7185 7186 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7187 qlt_24xx_process_atio_queue(vha, 0); 7188 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7189 7190 spin_lock_irqsave(&ha->hardware_lock, flags); 7191 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7192 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7193 7194 kfree(op); 7195 } 7196 7197 void 7198 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7199 response_t *pkt) 7200 { 7201 struct qla_tgt_sess_op *op; 7202 7203 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7204 7205 if (!op) { 7206 /* do not reach for ATIO queue here. This is best effort err 7207 * recovery at this point. 7208 */ 7209 qlt_response_pkt_all_vps(vha, rsp, pkt); 7210 return; 7211 } 7212 7213 memcpy(&op->atio, pkt, sizeof(*pkt)); 7214 op->vha = vha; 7215 op->chip_reset = vha->hw->base_qpair->chip_reset; 7216 op->rsp = rsp; 7217 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7218 queue_work(qla_tgt_wq, &op->work); 7219 return; 7220 } 7221 7222 int 7223 qlt_mem_alloc(struct qla_hw_data *ha) 7224 { 7225 if (!QLA_TGT_MODE_ENABLED()) 7226 return 0; 7227 7228 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7229 sizeof(struct qla_tgt_vp_map), 7230 GFP_KERNEL); 7231 if (!ha->tgt.tgt_vp_map) 7232 return -ENOMEM; 7233 7234 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7235 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7236 &ha->tgt.atio_dma, GFP_KERNEL); 7237 if (!ha->tgt.atio_ring) { 7238 kfree(ha->tgt.tgt_vp_map); 7239 return -ENOMEM; 7240 } 7241 return 0; 7242 } 7243 7244 void 7245 qlt_mem_free(struct qla_hw_data *ha) 7246 { 7247 if (!QLA_TGT_MODE_ENABLED()) 7248 return; 7249 7250 if (ha->tgt.atio_ring) { 7251 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7252 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7253 ha->tgt.atio_dma); 7254 } 7255 ha->tgt.atio_ring = NULL; 7256 ha->tgt.atio_dma = 0; 7257 kfree(ha->tgt.tgt_vp_map); 7258 ha->tgt.tgt_vp_map = NULL; 7259 } 7260 7261 /* vport_slock to be held by the caller */ 7262 void 7263 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7264 { 7265 void *slot; 7266 u32 key; 7267 int rc; 7268 7269 key = vha->d_id.b24; 7270 7271 switch (cmd) { 7272 case SET_VP_IDX: 7273 if (!QLA_TGT_MODE_ENABLED()) 7274 return; 7275 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7276 break; 7277 case SET_AL_PA: 7278 slot = btree_lookup32(&vha->hw->host_map, key); 7279 if (!slot) { 7280 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7281 "Save vha in host_map %p %06x\n", vha, key); 7282 rc = btree_insert32(&vha->hw->host_map, 7283 key, vha, GFP_ATOMIC); 7284 if (rc) 7285 ql_log(ql_log_info, vha, 0xd03e, 7286 "Unable to insert s_id into host_map: %06x\n", 7287 key); 7288 return; 7289 } 7290 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7291 "replace existing vha in host_map %p %06x\n", vha, key); 7292 btree_update32(&vha->hw->host_map, key, vha); 7293 break; 7294 case RESET_VP_IDX: 7295 if (!QLA_TGT_MODE_ENABLED()) 7296 return; 7297 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7298 break; 7299 case RESET_AL_PA: 7300 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7301 "clear vha in host_map %p %06x\n", vha, key); 7302 slot = btree_lookup32(&vha->hw->host_map, key); 7303 if (slot) 7304 btree_remove32(&vha->hw->host_map, key); 7305 vha->d_id.b24 = 0; 7306 break; 7307 } 7308 } 7309 7310 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7311 { 7312 7313 if (!vha->d_id.b24) { 7314 vha->d_id = id; 7315 qlt_update_vp_map(vha, SET_AL_PA); 7316 } else if (vha->d_id.b24 != id.b24) { 7317 qlt_update_vp_map(vha, RESET_AL_PA); 7318 vha->d_id = id; 7319 qlt_update_vp_map(vha, SET_AL_PA); 7320 } 7321 } 7322 7323 static int __init qlt_parse_ini_mode(void) 7324 { 7325 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7326 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7327 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7328 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7329 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7330 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7331 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7332 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7333 else 7334 return false; 7335 7336 return true; 7337 } 7338 7339 int __init qlt_init(void) 7340 { 7341 int ret; 7342 7343 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7344 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7345 7346 if (!qlt_parse_ini_mode()) { 7347 ql_log(ql_log_fatal, NULL, 0xe06b, 7348 "qlt_parse_ini_mode() failed\n"); 7349 return -EINVAL; 7350 } 7351 7352 if (!QLA_TGT_MODE_ENABLED()) 7353 return 0; 7354 7355 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7356 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7357 qla_tgt_mgmt_cmd), 0, NULL); 7358 if (!qla_tgt_mgmt_cmd_cachep) { 7359 ql_log(ql_log_fatal, NULL, 0xd04b, 7360 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7361 return -ENOMEM; 7362 } 7363 7364 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7365 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7366 0, NULL); 7367 7368 if (!qla_tgt_plogi_cachep) { 7369 ql_log(ql_log_fatal, NULL, 0xe06d, 7370 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7371 ret = -ENOMEM; 7372 goto out_mgmt_cmd_cachep; 7373 } 7374 7375 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7376 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7377 if (!qla_tgt_mgmt_cmd_mempool) { 7378 ql_log(ql_log_fatal, NULL, 0xe06e, 7379 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7380 ret = -ENOMEM; 7381 goto out_plogi_cachep; 7382 } 7383 7384 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7385 if (!qla_tgt_wq) { 7386 ql_log(ql_log_fatal, NULL, 0xe06f, 7387 "alloc_workqueue for qla_tgt_wq failed\n"); 7388 ret = -ENOMEM; 7389 goto out_cmd_mempool; 7390 } 7391 /* 7392 * Return 1 to signal that initiator-mode is being disabled 7393 */ 7394 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7395 7396 out_cmd_mempool: 7397 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7398 out_plogi_cachep: 7399 kmem_cache_destroy(qla_tgt_plogi_cachep); 7400 out_mgmt_cmd_cachep: 7401 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7402 return ret; 7403 } 7404 7405 void qlt_exit(void) 7406 { 7407 if (!QLA_TGT_MODE_ENABLED()) 7408 return; 7409 7410 destroy_workqueue(qla_tgt_wq); 7411 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7412 kmem_cache_destroy(qla_tgt_plogi_cachep); 7413 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7414 } 7415