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 do { 1561 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1562 flush_work(&tgt->sess_work); 1563 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1564 } while (!list_empty(&tgt->sess_works_list)); 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 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2156 return -EIO; 2157 } 2158 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2159 2160 if (abort_cmd->qpair) { 2161 mcmd->qpair = abort_cmd->qpair; 2162 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2163 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2164 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2165 } 2166 2167 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2168 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2169 2170 return 0; 2171 } 2172 2173 /* 2174 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2175 */ 2176 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2177 struct abts_recv_from_24xx *abts) 2178 { 2179 struct qla_hw_data *ha = vha->hw; 2180 struct fc_port *sess; 2181 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2182 be_id_t s_id; 2183 int rc; 2184 unsigned long flags; 2185 2186 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2188 "qla_target(%d): ABTS: Abort Sequence not " 2189 "supported\n", vha->vp_idx); 2190 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2191 false); 2192 return; 2193 } 2194 2195 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2196 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2197 "qla_target(%d): ABTS: Unknown Exchange " 2198 "Address received\n", vha->vp_idx); 2199 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2200 false); 2201 return; 2202 } 2203 2204 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2205 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2206 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2207 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2208 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2209 2210 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2211 2212 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2213 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2214 if (!sess) { 2215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2216 "qla_target(%d): task abort for non-existent session\n", 2217 vha->vp_idx); 2218 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2219 2220 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2221 false); 2222 return; 2223 } 2224 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2225 2226 2227 if (sess->deleted) { 2228 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2229 false); 2230 return; 2231 } 2232 2233 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2234 if (rc != 0) { 2235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2236 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2237 vha->vp_idx, rc); 2238 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2239 false); 2240 return; 2241 } 2242 } 2243 2244 /* 2245 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2246 */ 2247 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2248 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2249 { 2250 struct scsi_qla_host *ha = mcmd->vha; 2251 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2252 struct ctio7_to_24xx *ctio; 2253 uint16_t temp; 2254 2255 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2256 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2257 ha, atio, resp_code); 2258 2259 2260 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2261 if (ctio == NULL) { 2262 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2263 "qla_target(%d): %s failed: unable to allocate " 2264 "request packet\n", ha->vp_idx, __func__); 2265 return; 2266 } 2267 2268 ctio->entry_type = CTIO_TYPE7; 2269 ctio->entry_count = 1; 2270 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2271 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2272 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2273 ctio->vp_index = ha->vp_idx; 2274 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2275 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2276 temp = (atio->u.isp24.attr << 9)| 2277 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2278 ctio->u.status1.flags = cpu_to_le16(temp); 2279 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2280 ctio->u.status1.ox_id = cpu_to_le16(temp); 2281 ctio->u.status1.scsi_status = 2282 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2283 ctio->u.status1.response_len = cpu_to_le16(8); 2284 ctio->u.status1.sense_data[0] = resp_code; 2285 2286 /* Memory Barrier */ 2287 wmb(); 2288 if (qpair->reqq_start_iocbs) 2289 qpair->reqq_start_iocbs(qpair); 2290 else 2291 qla2x00_start_iocbs(ha, qpair->req); 2292 } 2293 2294 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2295 { 2296 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2297 } 2298 EXPORT_SYMBOL(qlt_free_mcmd); 2299 2300 /* 2301 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2302 * reacquire 2303 */ 2304 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2305 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2306 { 2307 struct atio_from_isp *atio = &cmd->atio; 2308 struct ctio7_to_24xx *ctio; 2309 uint16_t temp; 2310 struct scsi_qla_host *vha = cmd->vha; 2311 2312 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2313 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2314 "sense_key=%02x, asc=%02x, ascq=%02x", 2315 vha, atio, scsi_status, sense_key, asc, ascq); 2316 2317 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2318 if (!ctio) { 2319 ql_dbg(ql_dbg_async, vha, 0x3067, 2320 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2321 vha->host_no, __func__); 2322 goto out; 2323 } 2324 2325 ctio->entry_type = CTIO_TYPE7; 2326 ctio->entry_count = 1; 2327 ctio->handle = QLA_TGT_SKIP_HANDLE; 2328 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2329 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2330 ctio->vp_index = vha->vp_idx; 2331 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2332 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2333 temp = (atio->u.isp24.attr << 9) | 2334 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2335 ctio->u.status1.flags = cpu_to_le16(temp); 2336 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2337 ctio->u.status1.ox_id = cpu_to_le16(temp); 2338 ctio->u.status1.scsi_status = 2339 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2340 ctio->u.status1.response_len = cpu_to_le16(18); 2341 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2342 2343 if (ctio->u.status1.residual != 0) 2344 ctio->u.status1.scsi_status |= 2345 cpu_to_le16(SS_RESIDUAL_UNDER); 2346 2347 /* Fixed format sense data. */ 2348 ctio->u.status1.sense_data[0] = 0x70; 2349 ctio->u.status1.sense_data[2] = sense_key; 2350 /* Additional sense length */ 2351 ctio->u.status1.sense_data[7] = 0xa; 2352 /* ASC and ASCQ */ 2353 ctio->u.status1.sense_data[12] = asc; 2354 ctio->u.status1.sense_data[13] = ascq; 2355 2356 /* Memory Barrier */ 2357 wmb(); 2358 2359 if (qpair->reqq_start_iocbs) 2360 qpair->reqq_start_iocbs(qpair); 2361 else 2362 qla2x00_start_iocbs(vha, qpair->req); 2363 2364 out: 2365 return; 2366 } 2367 2368 /* callback from target fabric module code */ 2369 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2370 { 2371 struct scsi_qla_host *vha = mcmd->sess->vha; 2372 struct qla_hw_data *ha = vha->hw; 2373 unsigned long flags; 2374 struct qla_qpair *qpair = mcmd->qpair; 2375 bool free_mcmd = true; 2376 2377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2378 "TM response mcmd (%p) status %#x state %#x", 2379 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2380 2381 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2382 2383 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2384 /* 2385 * Either the port is not online or this request was from 2386 * previous life, just abort the processing. 2387 */ 2388 ql_dbg(ql_dbg_async, vha, 0xe100, 2389 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2390 vha->flags.online, qla2x00_reset_active(vha), 2391 mcmd->reset_count, qpair->chip_reset); 2392 ha->tgt.tgt_ops->free_mcmd(mcmd); 2393 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2394 return; 2395 } 2396 2397 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2398 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2399 case ELS_LOGO: 2400 case ELS_PRLO: 2401 case ELS_TPRLO: 2402 ql_dbg(ql_dbg_disc, vha, 0x2106, 2403 "TM response logo %8phC status %#x state %#x", 2404 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2405 mcmd->flags); 2406 qlt_schedule_sess_for_deletion(mcmd->sess); 2407 break; 2408 default: 2409 qlt_send_notify_ack(vha->hw->base_qpair, 2410 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2411 break; 2412 } 2413 } else { 2414 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2415 qlt_build_abts_resp_iocb(mcmd); 2416 free_mcmd = false; 2417 } else 2418 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2419 mcmd->fc_tm_rsp); 2420 } 2421 /* 2422 * Make the callback for ->free_mcmd() to queue_work() and invoke 2423 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2424 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2425 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2426 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2427 * qlt_xmit_tm_rsp() returns here.. 2428 */ 2429 if (free_mcmd) 2430 ha->tgt.tgt_ops->free_mcmd(mcmd); 2431 2432 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2433 } 2434 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2435 2436 /* No locks */ 2437 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2438 { 2439 struct qla_tgt_cmd *cmd = prm->cmd; 2440 2441 BUG_ON(cmd->sg_cnt == 0); 2442 2443 prm->sg = (struct scatterlist *)cmd->sg; 2444 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2445 cmd->sg_cnt, cmd->dma_data_direction); 2446 if (unlikely(prm->seg_cnt == 0)) 2447 goto out_err; 2448 2449 prm->cmd->sg_mapped = 1; 2450 2451 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2452 /* 2453 * If greater than four sg entries then we need to allocate 2454 * the continuation entries 2455 */ 2456 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2457 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2458 QLA_TGT_DATASEGS_PER_CMD_24XX, 2459 QLA_TGT_DATASEGS_PER_CONT_24XX); 2460 } else { 2461 /* DIF */ 2462 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2463 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2464 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2465 prm->tot_dsds = prm->seg_cnt; 2466 } else 2467 prm->tot_dsds = prm->seg_cnt; 2468 2469 if (cmd->prot_sg_cnt) { 2470 prm->prot_sg = cmd->prot_sg; 2471 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2472 cmd->prot_sg, cmd->prot_sg_cnt, 2473 cmd->dma_data_direction); 2474 if (unlikely(prm->prot_seg_cnt == 0)) 2475 goto out_err; 2476 2477 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2478 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2479 /* Dif Bundling not support here */ 2480 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2481 cmd->blk_sz); 2482 prm->tot_dsds += prm->prot_seg_cnt; 2483 } else 2484 prm->tot_dsds += prm->prot_seg_cnt; 2485 } 2486 } 2487 2488 return 0; 2489 2490 out_err: 2491 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2492 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2493 0, prm->cmd->sg_cnt); 2494 return -1; 2495 } 2496 2497 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2498 { 2499 struct qla_hw_data *ha; 2500 struct qla_qpair *qpair; 2501 2502 if (!cmd->sg_mapped) 2503 return; 2504 2505 qpair = cmd->qpair; 2506 2507 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2508 cmd->dma_data_direction); 2509 cmd->sg_mapped = 0; 2510 2511 if (cmd->prot_sg_cnt) 2512 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2513 cmd->dma_data_direction); 2514 2515 if (!cmd->ctx) 2516 return; 2517 ha = vha->hw; 2518 if (cmd->ctx_dsd_alloced) 2519 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2520 2521 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2522 } 2523 2524 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2525 uint32_t req_cnt) 2526 { 2527 uint32_t cnt; 2528 struct req_que *req = qpair->req; 2529 2530 if (req->cnt < (req_cnt + 2)) { 2531 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2532 rd_reg_dword_relaxed(req->req_q_out)); 2533 2534 if (req->ring_index < cnt) 2535 req->cnt = cnt - req->ring_index; 2536 else 2537 req->cnt = req->length - (req->ring_index - cnt); 2538 2539 if (unlikely(req->cnt < (req_cnt + 2))) 2540 return -EAGAIN; 2541 } 2542 2543 req->cnt -= req_cnt; 2544 2545 return 0; 2546 } 2547 2548 /* 2549 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2550 */ 2551 static inline void *qlt_get_req_pkt(struct req_que *req) 2552 { 2553 /* Adjust ring index. */ 2554 req->ring_index++; 2555 if (req->ring_index == req->length) { 2556 req->ring_index = 0; 2557 req->ring_ptr = req->ring; 2558 } else { 2559 req->ring_ptr++; 2560 } 2561 return (cont_entry_t *)req->ring_ptr; 2562 } 2563 2564 /* ha->hardware_lock supposed to be held on entry */ 2565 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2566 { 2567 uint32_t h; 2568 int index; 2569 uint8_t found = 0; 2570 struct req_que *req = qpair->req; 2571 2572 h = req->current_outstanding_cmd; 2573 2574 for (index = 1; index < req->num_outstanding_cmds; index++) { 2575 h++; 2576 if (h == req->num_outstanding_cmds) 2577 h = 1; 2578 2579 if (h == QLA_TGT_SKIP_HANDLE) 2580 continue; 2581 2582 if (!req->outstanding_cmds[h]) { 2583 found = 1; 2584 break; 2585 } 2586 } 2587 2588 if (found) { 2589 req->current_outstanding_cmd = h; 2590 } else { 2591 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2592 "qla_target(%d): Ran out of empty cmd slots\n", 2593 qpair->vha->vp_idx); 2594 h = QLA_TGT_NULL_HANDLE; 2595 } 2596 2597 return h; 2598 } 2599 2600 /* ha->hardware_lock supposed to be held on entry */ 2601 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2602 struct qla_tgt_prm *prm) 2603 { 2604 uint32_t h; 2605 struct ctio7_to_24xx *pkt; 2606 struct atio_from_isp *atio = &prm->cmd->atio; 2607 uint16_t temp; 2608 struct qla_tgt_cmd *cmd = prm->cmd; 2609 2610 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2611 prm->pkt = pkt; 2612 memset(pkt, 0, sizeof(*pkt)); 2613 2614 pkt->entry_type = CTIO_TYPE7; 2615 pkt->entry_count = (uint8_t)prm->req_cnt; 2616 pkt->vp_index = prm->cmd->vp_idx; 2617 2618 h = qlt_make_handle(qpair); 2619 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2620 /* 2621 * CTIO type 7 from the firmware doesn't provide a way to 2622 * know the initiator's LOOP ID, hence we can't find 2623 * the session and, so, the command. 2624 */ 2625 return -EAGAIN; 2626 } else 2627 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2628 2629 pkt->handle = make_handle(qpair->req->id, h); 2630 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2631 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2632 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2633 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2634 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2635 temp = atio->u.isp24.attr << 9; 2636 pkt->u.status0.flags |= cpu_to_le16(temp); 2637 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2638 pkt->u.status0.ox_id = cpu_to_le16(temp); 2639 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2640 2641 if (cmd->edif) { 2642 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2643 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2644 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2645 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2646 2647 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2648 } 2649 2650 return 0; 2651 } 2652 2653 /* 2654 * ha->hardware_lock supposed to be held on entry. We have already made sure 2655 * that there is sufficient amount of request entries to not drop it. 2656 */ 2657 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2658 { 2659 int cnt; 2660 struct dsd64 *cur_dsd; 2661 2662 /* Build continuation packets */ 2663 while (prm->seg_cnt > 0) { 2664 cont_a64_entry_t *cont_pkt64 = 2665 (cont_a64_entry_t *)qlt_get_req_pkt( 2666 prm->cmd->qpair->req); 2667 2668 /* 2669 * Make sure that from cont_pkt64 none of 2670 * 64-bit specific fields used for 32-bit 2671 * addressing. Cast to (cont_entry_t *) for 2672 * that. 2673 */ 2674 2675 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2676 2677 cont_pkt64->entry_count = 1; 2678 cont_pkt64->sys_define = 0; 2679 2680 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2681 cur_dsd = cont_pkt64->dsd; 2682 2683 /* Load continuation entry data segments */ 2684 for (cnt = 0; 2685 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2686 cnt++, prm->seg_cnt--) { 2687 append_dsd64(&cur_dsd, prm->sg); 2688 prm->sg = sg_next(prm->sg); 2689 } 2690 } 2691 } 2692 2693 /* 2694 * ha->hardware_lock supposed to be held on entry. We have already made sure 2695 * that there is sufficient amount of request entries to not drop it. 2696 */ 2697 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2698 { 2699 int cnt; 2700 struct dsd64 *cur_dsd; 2701 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2702 2703 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2704 2705 /* Setup packet address segment pointer */ 2706 cur_dsd = &pkt24->u.status0.dsd; 2707 2708 /* Set total data segment count */ 2709 if (prm->seg_cnt) 2710 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2711 2712 if (prm->seg_cnt == 0) { 2713 /* No data transfer */ 2714 cur_dsd->address = 0; 2715 cur_dsd->length = 0; 2716 return; 2717 } 2718 2719 /* If scatter gather */ 2720 2721 /* Load command entry data segments */ 2722 for (cnt = 0; 2723 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2724 cnt++, prm->seg_cnt--) { 2725 append_dsd64(&cur_dsd, prm->sg); 2726 prm->sg = sg_next(prm->sg); 2727 } 2728 2729 qlt_load_cont_data_segments(prm); 2730 } 2731 2732 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2733 { 2734 return cmd->bufflen > 0; 2735 } 2736 2737 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2738 { 2739 struct qla_tgt_cmd *cmd; 2740 struct scsi_qla_host *vha; 2741 2742 /* asc 0x10=dif error */ 2743 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2744 cmd = prm->cmd; 2745 vha = cmd->vha; 2746 /* ASCQ */ 2747 switch (prm->sense_buffer[13]) { 2748 case 1: 2749 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2750 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2751 "se_cmd=%p tag[%x]", 2752 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2753 cmd->atio.u.isp24.exchange_addr); 2754 break; 2755 case 2: 2756 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2757 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2758 "se_cmd=%p tag[%x]", 2759 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2760 cmd->atio.u.isp24.exchange_addr); 2761 break; 2762 case 3: 2763 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2764 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2765 "se_cmd=%p tag[%x]", 2766 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2767 cmd->atio.u.isp24.exchange_addr); 2768 break; 2769 default: 2770 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2771 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2772 "se_cmd=%p tag[%x]", 2773 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2774 cmd->atio.u.isp24.exchange_addr); 2775 break; 2776 } 2777 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2778 } 2779 } 2780 2781 /* 2782 * Called without ha->hardware_lock held 2783 */ 2784 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2785 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2786 uint32_t *full_req_cnt) 2787 { 2788 struct se_cmd *se_cmd = &cmd->se_cmd; 2789 struct qla_qpair *qpair = cmd->qpair; 2790 2791 prm->cmd = cmd; 2792 prm->tgt = cmd->tgt; 2793 prm->pkt = NULL; 2794 prm->rq_result = scsi_status; 2795 prm->sense_buffer = &cmd->sense_buffer[0]; 2796 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2797 prm->sg = NULL; 2798 prm->seg_cnt = -1; 2799 prm->req_cnt = 1; 2800 prm->residual = 0; 2801 prm->add_status_pkt = 0; 2802 prm->prot_sg = NULL; 2803 prm->prot_seg_cnt = 0; 2804 prm->tot_dsds = 0; 2805 2806 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2807 if (qlt_pci_map_calc_cnt(prm) != 0) 2808 return -EAGAIN; 2809 } 2810 2811 *full_req_cnt = prm->req_cnt; 2812 2813 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2814 prm->residual = se_cmd->residual_count; 2815 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2816 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2817 prm->residual, se_cmd->tag, 2818 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2819 cmd->bufflen, prm->rq_result); 2820 prm->rq_result |= SS_RESIDUAL_UNDER; 2821 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2822 prm->residual = se_cmd->residual_count; 2823 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2824 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2825 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2826 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2827 prm->rq_result |= SS_RESIDUAL_OVER; 2828 } 2829 2830 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2831 /* 2832 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2833 * ignored in *xmit_response() below 2834 */ 2835 if (qlt_has_data(cmd)) { 2836 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2837 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2838 (prm->rq_result != 0))) { 2839 prm->add_status_pkt = 1; 2840 (*full_req_cnt)++; 2841 } 2842 } 2843 } 2844 2845 return 0; 2846 } 2847 2848 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2849 int sending_sense) 2850 { 2851 if (cmd->qpair->enable_class_2) 2852 return 0; 2853 2854 if (sending_sense) 2855 return cmd->conf_compl_supported; 2856 else 2857 return cmd->qpair->enable_explicit_conf && 2858 cmd->conf_compl_supported; 2859 } 2860 2861 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2862 struct qla_tgt_prm *prm) 2863 { 2864 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2865 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2866 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2867 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2868 ctio->u.status0.flags |= cpu_to_le16( 2869 CTIO7_FLAGS_EXPLICIT_CONFORM | 2870 CTIO7_FLAGS_CONFORM_REQ); 2871 } 2872 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2873 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2874 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2875 int i; 2876 2877 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2878 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2879 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2880 "Skipping EXPLICIT_CONFORM and " 2881 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2882 "non GOOD status\n"); 2883 goto skip_explict_conf; 2884 } 2885 ctio->u.status1.flags |= cpu_to_le16( 2886 CTIO7_FLAGS_EXPLICIT_CONFORM | 2887 CTIO7_FLAGS_CONFORM_REQ); 2888 } 2889 skip_explict_conf: 2890 ctio->u.status1.flags &= 2891 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2892 ctio->u.status1.flags |= 2893 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2894 ctio->u.status1.scsi_status |= 2895 cpu_to_le16(SS_SENSE_LEN_VALID); 2896 ctio->u.status1.sense_length = 2897 cpu_to_le16(prm->sense_buffer_len); 2898 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2899 uint32_t v; 2900 2901 v = get_unaligned_be32( 2902 &((uint32_t *)prm->sense_buffer)[i]); 2903 put_unaligned_le32(v, 2904 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2905 } 2906 qlt_print_dif_err(prm); 2907 2908 } else { 2909 ctio->u.status1.flags &= 2910 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2911 ctio->u.status1.flags |= 2912 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2913 ctio->u.status1.sense_length = 0; 2914 memset(ctio->u.status1.sense_data, 0, 2915 sizeof(ctio->u.status1.sense_data)); 2916 } 2917 2918 /* Sense with len > 24, is it possible ??? */ 2919 } 2920 2921 static inline int 2922 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2923 { 2924 switch (se_cmd->prot_op) { 2925 case TARGET_PROT_DOUT_INSERT: 2926 case TARGET_PROT_DIN_STRIP: 2927 if (ql2xenablehba_err_chk >= 1) 2928 return 1; 2929 break; 2930 case TARGET_PROT_DOUT_PASS: 2931 case TARGET_PROT_DIN_PASS: 2932 if (ql2xenablehba_err_chk >= 2) 2933 return 1; 2934 break; 2935 case TARGET_PROT_DIN_INSERT: 2936 case TARGET_PROT_DOUT_STRIP: 2937 return 1; 2938 default: 2939 break; 2940 } 2941 return 0; 2942 } 2943 2944 static inline int 2945 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2946 { 2947 switch (se_cmd->prot_op) { 2948 case TARGET_PROT_DIN_INSERT: 2949 case TARGET_PROT_DOUT_INSERT: 2950 case TARGET_PROT_DIN_STRIP: 2951 case TARGET_PROT_DOUT_STRIP: 2952 case TARGET_PROT_DIN_PASS: 2953 case TARGET_PROT_DOUT_PASS: 2954 return 1; 2955 default: 2956 return 0; 2957 } 2958 return 0; 2959 } 2960 2961 /* 2962 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2963 */ 2964 static void 2965 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2966 uint16_t *pfw_prot_opts) 2967 { 2968 struct se_cmd *se_cmd = &cmd->se_cmd; 2969 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2970 scsi_qla_host_t *vha = cmd->tgt->vha; 2971 struct qla_hw_data *ha = vha->hw; 2972 uint32_t t32 = 0; 2973 2974 /* 2975 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2976 * have been immplemented by TCM, before AppTag is avail. 2977 * Look for modesense_handlers[] 2978 */ 2979 ctx->app_tag = 0; 2980 ctx->app_tag_mask[0] = 0x0; 2981 ctx->app_tag_mask[1] = 0x0; 2982 2983 if (IS_PI_UNINIT_CAPABLE(ha)) { 2984 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2985 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2986 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2987 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2988 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2989 } 2990 2991 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2992 2993 switch (se_cmd->prot_type) { 2994 case TARGET_DIF_TYPE0_PROT: 2995 /* 2996 * No check for ql2xenablehba_err_chk, as it 2997 * would be an I/O error if hba tag generation 2998 * is not done. 2999 */ 3000 ctx->ref_tag = cpu_to_le32(lba); 3001 /* enable ALL bytes of the ref tag */ 3002 ctx->ref_tag_mask[0] = 0xff; 3003 ctx->ref_tag_mask[1] = 0xff; 3004 ctx->ref_tag_mask[2] = 0xff; 3005 ctx->ref_tag_mask[3] = 0xff; 3006 break; 3007 case TARGET_DIF_TYPE1_PROT: 3008 /* 3009 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3010 * REF tag, and 16 bit app tag. 3011 */ 3012 ctx->ref_tag = cpu_to_le32(lba); 3013 if (!qla_tgt_ref_mask_check(se_cmd) || 3014 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3015 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3016 break; 3017 } 3018 /* enable ALL bytes of the ref tag */ 3019 ctx->ref_tag_mask[0] = 0xff; 3020 ctx->ref_tag_mask[1] = 0xff; 3021 ctx->ref_tag_mask[2] = 0xff; 3022 ctx->ref_tag_mask[3] = 0xff; 3023 break; 3024 case TARGET_DIF_TYPE2_PROT: 3025 /* 3026 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3027 * tag has to match LBA in CDB + N 3028 */ 3029 ctx->ref_tag = cpu_to_le32(lba); 3030 if (!qla_tgt_ref_mask_check(se_cmd) || 3031 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3032 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3033 break; 3034 } 3035 /* enable ALL bytes of the ref tag */ 3036 ctx->ref_tag_mask[0] = 0xff; 3037 ctx->ref_tag_mask[1] = 0xff; 3038 ctx->ref_tag_mask[2] = 0xff; 3039 ctx->ref_tag_mask[3] = 0xff; 3040 break; 3041 case TARGET_DIF_TYPE3_PROT: 3042 /* For TYPE 3 protection: 16 bit GUARD only */ 3043 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3044 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3045 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3046 break; 3047 } 3048 } 3049 3050 static inline int 3051 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3052 { 3053 struct dsd64 *cur_dsd; 3054 uint32_t transfer_length = 0; 3055 uint32_t data_bytes; 3056 uint32_t dif_bytes; 3057 uint8_t bundling = 1; 3058 struct crc_context *crc_ctx_pkt = NULL; 3059 struct qla_hw_data *ha; 3060 struct ctio_crc2_to_fw *pkt; 3061 dma_addr_t crc_ctx_dma; 3062 uint16_t fw_prot_opts = 0; 3063 struct qla_tgt_cmd *cmd = prm->cmd; 3064 struct se_cmd *se_cmd = &cmd->se_cmd; 3065 uint32_t h; 3066 struct atio_from_isp *atio = &prm->cmd->atio; 3067 struct qla_tc_param tc; 3068 uint16_t t16; 3069 scsi_qla_host_t *vha = cmd->vha; 3070 3071 ha = vha->hw; 3072 3073 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3074 prm->pkt = pkt; 3075 memset(pkt, 0, sizeof(*pkt)); 3076 3077 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3078 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3079 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3080 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3081 3082 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3083 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3084 bundling = 0; 3085 3086 /* Compute dif len and adjust data len to incude protection */ 3087 data_bytes = cmd->bufflen; 3088 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3089 3090 switch (se_cmd->prot_op) { 3091 case TARGET_PROT_DIN_INSERT: 3092 case TARGET_PROT_DOUT_STRIP: 3093 transfer_length = data_bytes; 3094 if (cmd->prot_sg_cnt) 3095 data_bytes += dif_bytes; 3096 break; 3097 case TARGET_PROT_DIN_STRIP: 3098 case TARGET_PROT_DOUT_INSERT: 3099 case TARGET_PROT_DIN_PASS: 3100 case TARGET_PROT_DOUT_PASS: 3101 transfer_length = data_bytes + dif_bytes; 3102 break; 3103 default: 3104 BUG(); 3105 break; 3106 } 3107 3108 if (!qlt_hba_err_chk_enabled(se_cmd)) 3109 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3110 /* HBA error checking enabled */ 3111 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3112 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3113 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3114 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3115 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3116 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3117 } 3118 3119 switch (se_cmd->prot_op) { 3120 case TARGET_PROT_DIN_INSERT: 3121 case TARGET_PROT_DOUT_INSERT: 3122 fw_prot_opts |= PO_MODE_DIF_INSERT; 3123 break; 3124 case TARGET_PROT_DIN_STRIP: 3125 case TARGET_PROT_DOUT_STRIP: 3126 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3127 break; 3128 case TARGET_PROT_DIN_PASS: 3129 case TARGET_PROT_DOUT_PASS: 3130 fw_prot_opts |= PO_MODE_DIF_PASS; 3131 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3132 break; 3133 default:/* Normal Request */ 3134 fw_prot_opts |= PO_MODE_DIF_PASS; 3135 break; 3136 } 3137 3138 /* ---- PKT ---- */ 3139 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3140 pkt->entry_type = CTIO_CRC2; 3141 pkt->entry_count = 1; 3142 pkt->vp_index = cmd->vp_idx; 3143 3144 h = qlt_make_handle(qpair); 3145 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3146 /* 3147 * CTIO type 7 from the firmware doesn't provide a way to 3148 * know the initiator's LOOP ID, hence we can't find 3149 * the session and, so, the command. 3150 */ 3151 return -EAGAIN; 3152 } else 3153 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3154 3155 pkt->handle = make_handle(qpair->req->id, h); 3156 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3157 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3158 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3159 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3160 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3161 3162 /* silence compile warning */ 3163 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3164 pkt->ox_id = cpu_to_le16(t16); 3165 3166 t16 = (atio->u.isp24.attr << 9); 3167 pkt->flags |= cpu_to_le16(t16); 3168 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3169 3170 /* Set transfer direction */ 3171 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3172 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3173 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3174 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3175 3176 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3177 /* Fibre channel byte count */ 3178 pkt->transfer_length = cpu_to_le32(transfer_length); 3179 3180 /* ----- CRC context -------- */ 3181 3182 /* Allocate CRC context from global pool */ 3183 crc_ctx_pkt = cmd->ctx = 3184 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3185 3186 if (!crc_ctx_pkt) 3187 goto crc_queuing_error; 3188 3189 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3190 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3191 3192 /* Set handle */ 3193 crc_ctx_pkt->handle = pkt->handle; 3194 3195 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3196 3197 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3198 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3199 3200 if (!bundling) { 3201 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3202 } else { 3203 /* 3204 * Configure Bundling if we need to fetch interlaving 3205 * protection PCI accesses 3206 */ 3207 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3208 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3209 crc_ctx_pkt->u.bundling.dseg_count = 3210 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3211 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3212 } 3213 3214 /* Finish the common fields of CRC pkt */ 3215 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3216 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3217 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3218 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3219 3220 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3221 tc.vha = vha; 3222 tc.blk_sz = cmd->blk_sz; 3223 tc.bufflen = cmd->bufflen; 3224 tc.sg = cmd->sg; 3225 tc.prot_sg = cmd->prot_sg; 3226 tc.ctx = crc_ctx_pkt; 3227 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3228 3229 /* Walks data segments */ 3230 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3231 3232 if (!bundling && prm->prot_seg_cnt) { 3233 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3234 prm->tot_dsds, &tc)) 3235 goto crc_queuing_error; 3236 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3237 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3238 goto crc_queuing_error; 3239 3240 if (bundling && prm->prot_seg_cnt) { 3241 /* Walks dif segments */ 3242 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3243 3244 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3245 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3246 prm->prot_seg_cnt, cmd)) 3247 goto crc_queuing_error; 3248 } 3249 return QLA_SUCCESS; 3250 3251 crc_queuing_error: 3252 /* Cleanup will be performed by the caller */ 3253 qpair->req->outstanding_cmds[h] = NULL; 3254 3255 return QLA_FUNCTION_FAILED; 3256 } 3257 3258 /* 3259 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3260 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3261 */ 3262 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3263 uint8_t scsi_status) 3264 { 3265 struct scsi_qla_host *vha = cmd->vha; 3266 struct qla_qpair *qpair = cmd->qpair; 3267 struct ctio7_to_24xx *pkt; 3268 struct qla_tgt_prm prm; 3269 uint32_t full_req_cnt = 0; 3270 unsigned long flags = 0; 3271 int res; 3272 3273 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3274 (cmd->sess && cmd->sess->deleted)) { 3275 cmd->state = QLA_TGT_STATE_PROCESSED; 3276 return 0; 3277 } 3278 3279 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3280 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3281 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3282 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3283 &cmd->se_cmd, qpair->id); 3284 3285 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3286 &full_req_cnt); 3287 if (unlikely(res != 0)) { 3288 return res; 3289 } 3290 3291 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3292 3293 if (xmit_type == QLA_TGT_XMIT_STATUS) 3294 qpair->tgt_counters.core_qla_snd_status++; 3295 else 3296 qpair->tgt_counters.core_qla_que_buf++; 3297 3298 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3299 /* 3300 * Either the port is not online or this request was from 3301 * previous life, just abort the processing. 3302 */ 3303 cmd->state = QLA_TGT_STATE_PROCESSED; 3304 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3305 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3306 vha->flags.online, qla2x00_reset_active(vha), 3307 cmd->reset_count, qpair->chip_reset); 3308 res = 0; 3309 goto out_unmap_unlock; 3310 } 3311 3312 /* Does F/W have an IOCBs for this request */ 3313 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3314 if (unlikely(res)) 3315 goto out_unmap_unlock; 3316 3317 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3318 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3319 else 3320 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3321 if (unlikely(res != 0)) { 3322 qpair->req->cnt += full_req_cnt; 3323 goto out_unmap_unlock; 3324 } 3325 3326 pkt = (struct ctio7_to_24xx *)prm.pkt; 3327 3328 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3329 pkt->u.status0.flags |= 3330 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3331 CTIO7_FLAGS_STATUS_MODE_0); 3332 3333 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3334 qlt_load_data_segments(&prm); 3335 3336 if (prm.add_status_pkt == 0) { 3337 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3338 pkt->u.status0.scsi_status = 3339 cpu_to_le16(prm.rq_result); 3340 if (!cmd->edif) 3341 pkt->u.status0.residual = 3342 cpu_to_le32(prm.residual); 3343 3344 pkt->u.status0.flags |= cpu_to_le16( 3345 CTIO7_FLAGS_SEND_STATUS); 3346 if (qlt_need_explicit_conf(cmd, 0)) { 3347 pkt->u.status0.flags |= 3348 cpu_to_le16( 3349 CTIO7_FLAGS_EXPLICIT_CONFORM | 3350 CTIO7_FLAGS_CONFORM_REQ); 3351 } 3352 } 3353 3354 } else { 3355 /* 3356 * We have already made sure that there is sufficient 3357 * amount of request entries to not drop HW lock in 3358 * req_pkt(). 3359 */ 3360 struct ctio7_to_24xx *ctio = 3361 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3362 qpair->req); 3363 3364 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3365 "Building additional status packet 0x%p.\n", 3366 ctio); 3367 3368 /* 3369 * T10Dif: ctio_crc2_to_fw overlay ontop of 3370 * ctio7_to_24xx 3371 */ 3372 memcpy(ctio, pkt, sizeof(*ctio)); 3373 /* reset back to CTIO7 */ 3374 ctio->entry_count = 1; 3375 ctio->entry_type = CTIO_TYPE7; 3376 ctio->dseg_count = 0; 3377 ctio->u.status1.flags &= ~cpu_to_le16( 3378 CTIO7_FLAGS_DATA_IN); 3379 3380 /* Real finish is ctio_m1's finish */ 3381 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3382 pkt->u.status0.flags |= cpu_to_le16( 3383 CTIO7_FLAGS_DONT_RET_CTIO); 3384 3385 /* qlt_24xx_init_ctio_to_isp will correct 3386 * all neccessary fields that's part of CTIO7. 3387 * There should be no residual of CTIO-CRC2 data. 3388 */ 3389 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3390 &prm); 3391 } 3392 } else 3393 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3394 3395 3396 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3397 cmd->cmd_sent_to_fw = 1; 3398 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3399 3400 /* Memory Barrier */ 3401 wmb(); 3402 if (qpair->reqq_start_iocbs) 3403 qpair->reqq_start_iocbs(qpair); 3404 else 3405 qla2x00_start_iocbs(vha, qpair->req); 3406 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3407 3408 return 0; 3409 3410 out_unmap_unlock: 3411 qlt_unmap_sg(vha, cmd); 3412 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3413 3414 return res; 3415 } 3416 EXPORT_SYMBOL(qlt_xmit_response); 3417 3418 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3419 { 3420 struct ctio7_to_24xx *pkt; 3421 struct scsi_qla_host *vha = cmd->vha; 3422 struct qla_tgt *tgt = cmd->tgt; 3423 struct qla_tgt_prm prm; 3424 unsigned long flags = 0; 3425 int res = 0; 3426 struct qla_qpair *qpair = cmd->qpair; 3427 3428 memset(&prm, 0, sizeof(prm)); 3429 prm.cmd = cmd; 3430 prm.tgt = tgt; 3431 prm.sg = NULL; 3432 prm.req_cnt = 1; 3433 3434 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3435 (cmd->sess && cmd->sess->deleted)) { 3436 /* 3437 * Either the port is not online or this request was from 3438 * previous life, just abort the processing. 3439 */ 3440 cmd->aborted = 1; 3441 cmd->write_data_transferred = 0; 3442 cmd->state = QLA_TGT_STATE_DATA_IN; 3443 vha->hw->tgt.tgt_ops->handle_data(cmd); 3444 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3445 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3446 vha->flags.online, qla2x00_reset_active(vha), 3447 cmd->reset_count, qpair->chip_reset); 3448 return 0; 3449 } 3450 3451 /* Calculate number of entries and segments required */ 3452 if (qlt_pci_map_calc_cnt(&prm) != 0) 3453 return -EAGAIN; 3454 3455 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3456 /* Does F/W have an IOCBs for this request */ 3457 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3458 if (res != 0) 3459 goto out_unlock_free_unmap; 3460 if (cmd->se_cmd.prot_op) 3461 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3462 else 3463 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3464 3465 if (unlikely(res != 0)) { 3466 qpair->req->cnt += prm.req_cnt; 3467 goto out_unlock_free_unmap; 3468 } 3469 3470 pkt = (struct ctio7_to_24xx *)prm.pkt; 3471 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3472 CTIO7_FLAGS_STATUS_MODE_0); 3473 3474 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3475 qlt_load_data_segments(&prm); 3476 3477 cmd->state = QLA_TGT_STATE_NEED_DATA; 3478 cmd->cmd_sent_to_fw = 1; 3479 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3480 3481 /* Memory Barrier */ 3482 wmb(); 3483 if (qpair->reqq_start_iocbs) 3484 qpair->reqq_start_iocbs(qpair); 3485 else 3486 qla2x00_start_iocbs(vha, qpair->req); 3487 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3488 3489 return res; 3490 3491 out_unlock_free_unmap: 3492 qlt_unmap_sg(vha, cmd); 3493 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3494 3495 return res; 3496 } 3497 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3498 3499 3500 /* 3501 * it is assumed either hardware_lock or qpair lock is held. 3502 */ 3503 static void 3504 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3505 struct ctio_crc_from_fw *sts) 3506 { 3507 uint8_t *ap = &sts->actual_dif[0]; 3508 uint8_t *ep = &sts->expected_dif[0]; 3509 uint64_t lba = cmd->se_cmd.t_task_lba; 3510 uint8_t scsi_status, sense_key, asc, ascq; 3511 unsigned long flags; 3512 struct scsi_qla_host *vha = cmd->vha; 3513 3514 cmd->trc_flags |= TRC_DIF_ERR; 3515 3516 cmd->a_guard = get_unaligned_be16(ap + 0); 3517 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3518 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3519 3520 cmd->e_guard = get_unaligned_be16(ep + 0); 3521 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3522 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3523 3524 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3525 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3526 3527 scsi_status = sense_key = asc = ascq = 0; 3528 3529 /* check appl tag */ 3530 if (cmd->e_app_tag != cmd->a_app_tag) { 3531 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3532 "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]", 3533 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3534 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3535 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3536 cmd->atio.u.isp24.fcp_hdr.ox_id); 3537 3538 cmd->dif_err_code = DIF_ERR_APP; 3539 scsi_status = SAM_STAT_CHECK_CONDITION; 3540 sense_key = ABORTED_COMMAND; 3541 asc = 0x10; 3542 ascq = 0x2; 3543 } 3544 3545 /* check ref tag */ 3546 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3547 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3548 "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] ", 3549 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3550 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3551 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3552 cmd->atio.u.isp24.fcp_hdr.ox_id); 3553 3554 cmd->dif_err_code = DIF_ERR_REF; 3555 scsi_status = SAM_STAT_CHECK_CONDITION; 3556 sense_key = ABORTED_COMMAND; 3557 asc = 0x10; 3558 ascq = 0x3; 3559 goto out; 3560 } 3561 3562 /* check guard */ 3563 if (cmd->e_guard != cmd->a_guard) { 3564 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3565 "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]", 3566 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3567 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3568 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3569 cmd->atio.u.isp24.fcp_hdr.ox_id); 3570 3571 cmd->dif_err_code = DIF_ERR_GRD; 3572 scsi_status = SAM_STAT_CHECK_CONDITION; 3573 sense_key = ABORTED_COMMAND; 3574 asc = 0x10; 3575 ascq = 0x1; 3576 } 3577 out: 3578 switch (cmd->state) { 3579 case QLA_TGT_STATE_NEED_DATA: 3580 /* handle_data will load DIF error code */ 3581 cmd->state = QLA_TGT_STATE_DATA_IN; 3582 vha->hw->tgt.tgt_ops->handle_data(cmd); 3583 break; 3584 default: 3585 spin_lock_irqsave(&cmd->cmd_lock, flags); 3586 if (cmd->aborted) { 3587 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3588 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3589 break; 3590 } 3591 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3592 3593 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3594 ascq); 3595 /* assume scsi status gets out on the wire. 3596 * Will not wait for completion. 3597 */ 3598 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3599 break; 3600 } 3601 } 3602 3603 /* If hardware_lock held on entry, might drop it, then reaquire */ 3604 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3605 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3606 struct imm_ntfy_from_isp *ntfy) 3607 { 3608 struct nack_to_isp *nack; 3609 struct qla_hw_data *ha = vha->hw; 3610 request_t *pkt; 3611 int ret = 0; 3612 3613 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3614 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3615 3616 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3617 if (pkt == NULL) { 3618 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3619 "qla_target(%d): %s failed: unable to allocate " 3620 "request packet\n", vha->vp_idx, __func__); 3621 return -ENOMEM; 3622 } 3623 3624 pkt->entry_type = NOTIFY_ACK_TYPE; 3625 pkt->entry_count = 1; 3626 pkt->handle = QLA_TGT_SKIP_HANDLE; 3627 3628 nack = (struct nack_to_isp *)pkt; 3629 nack->ox_id = ntfy->ox_id; 3630 3631 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3632 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3633 nack->u.isp24.flags = ntfy->u.isp24.flags & 3634 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3635 } 3636 3637 /* terminate */ 3638 nack->u.isp24.flags |= 3639 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3640 3641 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3642 nack->u.isp24.status = ntfy->u.isp24.status; 3643 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3644 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3645 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3646 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3647 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3648 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3649 3650 qla2x00_start_iocbs(vha, vha->req); 3651 return ret; 3652 } 3653 3654 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3655 struct imm_ntfy_from_isp *imm, int ha_locked) 3656 { 3657 int rc; 3658 3659 WARN_ON_ONCE(!ha_locked); 3660 rc = __qlt_send_term_imm_notif(vha, imm); 3661 pr_debug("rc = %d\n", rc); 3662 } 3663 3664 /* 3665 * If hardware_lock held on entry, might drop it, then reaquire 3666 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3667 */ 3668 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3669 struct qla_tgt_cmd *cmd, 3670 struct atio_from_isp *atio) 3671 { 3672 struct scsi_qla_host *vha = qpair->vha; 3673 struct ctio7_to_24xx *ctio24; 3674 struct qla_hw_data *ha = vha->hw; 3675 request_t *pkt; 3676 int ret = 0; 3677 uint16_t temp; 3678 3679 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3680 3681 if (cmd) 3682 vha = cmd->vha; 3683 3684 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3685 if (pkt == NULL) { 3686 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3687 "qla_target(%d): %s failed: unable to allocate " 3688 "request packet\n", vha->vp_idx, __func__); 3689 return -ENOMEM; 3690 } 3691 3692 if (cmd != NULL) { 3693 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3694 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3695 "qla_target(%d): Terminating cmd %p with " 3696 "incorrect state %d\n", vha->vp_idx, cmd, 3697 cmd->state); 3698 } else 3699 ret = 1; 3700 } 3701 3702 qpair->tgt_counters.num_term_xchg_sent++; 3703 pkt->entry_count = 1; 3704 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3705 3706 ctio24 = (struct ctio7_to_24xx *)pkt; 3707 ctio24->entry_type = CTIO_TYPE7; 3708 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3709 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3710 ctio24->vp_index = vha->vp_idx; 3711 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3712 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3713 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3714 CTIO7_FLAGS_TERMINATE; 3715 ctio24->u.status1.flags = cpu_to_le16(temp); 3716 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3717 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3718 3719 /* Memory Barrier */ 3720 wmb(); 3721 if (qpair->reqq_start_iocbs) 3722 qpair->reqq_start_iocbs(qpair); 3723 else 3724 qla2x00_start_iocbs(vha, qpair->req); 3725 return ret; 3726 } 3727 3728 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3729 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3730 int ul_abort) 3731 { 3732 struct scsi_qla_host *vha; 3733 unsigned long flags = 0; 3734 int rc; 3735 3736 /* why use different vha? NPIV */ 3737 if (cmd) 3738 vha = cmd->vha; 3739 else 3740 vha = qpair->vha; 3741 3742 if (ha_locked) { 3743 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3744 if (rc == -ENOMEM) 3745 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3746 goto done; 3747 } 3748 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3749 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3750 if (rc == -ENOMEM) 3751 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3752 3753 done: 3754 if (cmd && !ul_abort && !cmd->aborted) { 3755 if (cmd->sg_mapped) 3756 qlt_unmap_sg(vha, cmd); 3757 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3758 } 3759 3760 if (!ha_locked) 3761 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3762 3763 return; 3764 } 3765 3766 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3767 { 3768 struct list_head free_list; 3769 struct qla_tgt_cmd *cmd, *tcmd; 3770 3771 vha->hw->tgt.leak_exchg_thresh_hold = 3772 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3773 3774 cmd = tcmd = NULL; 3775 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3776 INIT_LIST_HEAD(&free_list); 3777 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3778 3779 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3780 list_del(&cmd->cmd_list); 3781 /* This cmd was never sent to TCM. There is no need 3782 * to schedule free or call free_cmd 3783 */ 3784 qlt_free_cmd(cmd); 3785 vha->hw->tgt.num_qfull_cmds_alloc--; 3786 } 3787 } 3788 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3789 } 3790 3791 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3792 { 3793 uint32_t total_leaked; 3794 3795 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3796 3797 if (vha->hw->tgt.leak_exchg_thresh_hold && 3798 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3799 3800 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3801 "Chip reset due to exchange starvation: %d/%d.\n", 3802 total_leaked, vha->hw->cur_fw_xcb_count); 3803 3804 if (IS_P3P_TYPE(vha->hw)) 3805 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3806 else 3807 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3808 qla2xxx_wake_dpc(vha); 3809 } 3810 3811 } 3812 3813 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3814 { 3815 struct qla_tgt *tgt = cmd->tgt; 3816 struct scsi_qla_host *vha = tgt->vha; 3817 struct se_cmd *se_cmd = &cmd->se_cmd; 3818 unsigned long flags; 3819 3820 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3821 "qla_target(%d): terminating exchange for aborted cmd=%p " 3822 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3823 se_cmd->tag); 3824 3825 spin_lock_irqsave(&cmd->cmd_lock, flags); 3826 if (cmd->aborted) { 3827 if (cmd->sg_mapped) 3828 qlt_unmap_sg(vha, cmd); 3829 3830 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3831 /* 3832 * It's normal to see 2 calls in this path: 3833 * 1) XFER Rdy completion + CMD_T_ABORT 3834 * 2) TCM TMR - drain_state_list 3835 */ 3836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3837 "multiple abort. %p transport_state %x, t_state %x, " 3838 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3839 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3840 return -EIO; 3841 } 3842 cmd->aborted = 1; 3843 cmd->trc_flags |= TRC_ABORT; 3844 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3845 3846 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3847 return 0; 3848 } 3849 EXPORT_SYMBOL(qlt_abort_cmd); 3850 3851 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3852 { 3853 struct fc_port *sess = cmd->sess; 3854 3855 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3856 "%s: se_cmd[%p] ox_id %04x\n", 3857 __func__, &cmd->se_cmd, 3858 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3859 3860 BUG_ON(cmd->cmd_in_wq); 3861 3862 if (!cmd->q_full) 3863 qlt_decr_num_pend_cmds(cmd->vha); 3864 3865 BUG_ON(cmd->sg_mapped); 3866 cmd->jiffies_at_free = get_jiffies_64(); 3867 3868 if (!sess || !sess->se_sess) { 3869 WARN_ON(1); 3870 return; 3871 } 3872 cmd->jiffies_at_free = get_jiffies_64(); 3873 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3874 } 3875 EXPORT_SYMBOL(qlt_free_cmd); 3876 3877 /* 3878 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3879 */ 3880 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3881 struct qla_tgt_cmd *cmd, uint32_t status) 3882 { 3883 int term = 0; 3884 struct scsi_qla_host *vha = qpair->vha; 3885 3886 if (cmd->se_cmd.prot_op) 3887 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3888 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3889 "se_cmd=%p tag[%x] op %#x/%s", 3890 cmd->lba, cmd->lba, 3891 cmd->num_blks, &cmd->se_cmd, 3892 cmd->atio.u.isp24.exchange_addr, 3893 cmd->se_cmd.prot_op, 3894 prot_op_str(cmd->se_cmd.prot_op)); 3895 3896 if (ctio != NULL) { 3897 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3898 3899 term = !(c->flags & 3900 cpu_to_le16(OF_TERM_EXCH)); 3901 } else 3902 term = 1; 3903 3904 if (term) 3905 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3906 3907 return term; 3908 } 3909 3910 3911 /* ha->hardware_lock supposed to be held on entry */ 3912 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3913 struct rsp_que *rsp, uint32_t handle, void *ctio) 3914 { 3915 void *cmd = NULL; 3916 struct req_que *req; 3917 int qid = GET_QID(handle); 3918 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3919 3920 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3921 return NULL; 3922 3923 if (qid == rsp->req->id) { 3924 req = rsp->req; 3925 } else if (vha->hw->req_q_map[qid]) { 3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3927 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3928 vha->vp_idx, rsp->id, handle); 3929 req = vha->hw->req_q_map[qid]; 3930 } else { 3931 return NULL; 3932 } 3933 3934 h &= QLA_CMD_HANDLE_MASK; 3935 3936 if (h != QLA_TGT_NULL_HANDLE) { 3937 if (unlikely(h >= req->num_outstanding_cmds)) { 3938 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3939 "qla_target(%d): Wrong handle %x received\n", 3940 vha->vp_idx, handle); 3941 return NULL; 3942 } 3943 3944 cmd = req->outstanding_cmds[h]; 3945 if (unlikely(cmd == NULL)) { 3946 ql_dbg(ql_dbg_async, vha, 0xe053, 3947 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3948 vha->vp_idx, handle, req->id, rsp->id); 3949 return NULL; 3950 } 3951 req->outstanding_cmds[h] = NULL; 3952 } else if (ctio != NULL) { 3953 /* We can't get loop ID from CTIO7 */ 3954 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3955 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3956 "support NULL handles\n", vha->vp_idx); 3957 return NULL; 3958 } 3959 3960 return cmd; 3961 } 3962 3963 /* 3964 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3965 */ 3966 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3967 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3968 { 3969 struct qla_hw_data *ha = vha->hw; 3970 struct se_cmd *se_cmd; 3971 struct qla_tgt_cmd *cmd; 3972 struct qla_qpair *qpair = rsp->qpair; 3973 3974 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3975 /* That could happen only in case of an error/reset/abort */ 3976 if (status != CTIO_SUCCESS) { 3977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3978 "Intermediate CTIO received" 3979 " (status %x)\n", status); 3980 } 3981 return; 3982 } 3983 3984 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3985 if (cmd == NULL) 3986 return; 3987 3988 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3989 cmd->sess) { 3990 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 3991 (struct ctio7_from_24xx *)ctio); 3992 } 3993 3994 se_cmd = &cmd->se_cmd; 3995 cmd->cmd_sent_to_fw = 0; 3996 3997 qlt_unmap_sg(vha, cmd); 3998 3999 if (unlikely(status != CTIO_SUCCESS)) { 4000 switch (status & 0xFFFF) { 4001 case CTIO_INVALID_RX_ID: 4002 if (printk_ratelimit()) 4003 dev_info(&vha->hw->pdev->dev, 4004 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4005 vha->vp_idx, cmd->atio.u.isp24.attr, 4006 ((cmd->ctio_flags >> 9) & 0xf), 4007 cmd->ctio_flags); 4008 4009 break; 4010 case CTIO_LIP_RESET: 4011 case CTIO_TARGET_RESET: 4012 case CTIO_ABORTED: 4013 /* driver request abort via Terminate exchange */ 4014 case CTIO_TIMEOUT: 4015 /* They are OK */ 4016 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4017 "qla_target(%d): CTIO with " 4018 "status %#x received, state %x, se_cmd %p, " 4019 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4020 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4021 status, cmd->state, se_cmd); 4022 break; 4023 4024 case CTIO_PORT_LOGGED_OUT: 4025 case CTIO_PORT_UNAVAILABLE: 4026 { 4027 int logged_out = 4028 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4029 4030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4031 "qla_target(%d): CTIO with %s status %x " 4032 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4033 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4034 status, cmd->state, se_cmd); 4035 4036 if (logged_out && cmd->sess) { 4037 /* 4038 * Session is already logged out, but we need 4039 * to notify initiator, who's not aware of this 4040 */ 4041 cmd->sess->send_els_logo = 1; 4042 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4043 "%s %d %8phC post del sess\n", 4044 __func__, __LINE__, cmd->sess->port_name); 4045 4046 qlt_schedule_sess_for_deletion(cmd->sess); 4047 } 4048 break; 4049 } 4050 case CTIO_DIF_ERROR: { 4051 struct ctio_crc_from_fw *crc = 4052 (struct ctio_crc_from_fw *)ctio; 4053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4054 "qla_target(%d): CTIO with DIF_ERROR status %x " 4055 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4056 "expect_dif[0x%llx]\n", 4057 vha->vp_idx, status, cmd->state, se_cmd, 4058 *((u64 *)&crc->actual_dif[0]), 4059 *((u64 *)&crc->expected_dif[0])); 4060 4061 qlt_handle_dif_error(qpair, cmd, ctio); 4062 return; 4063 } 4064 4065 case CTIO_FAST_AUTH_ERR: 4066 case CTIO_FAST_INCOMP_PAD_LEN: 4067 case CTIO_FAST_INVALID_REQ: 4068 case CTIO_FAST_SPI_ERR: 4069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4070 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4071 vha->vp_idx, status, cmd->state, se_cmd); 4072 break; 4073 4074 default: 4075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4076 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4077 vha->vp_idx, status, cmd->state, se_cmd); 4078 break; 4079 } 4080 4081 4082 /* "cmd->aborted" means 4083 * cmd is already aborted/terminated, we don't 4084 * need to terminate again. The exchange is already 4085 * cleaned up/freed at FW level. Just cleanup at driver 4086 * level. 4087 */ 4088 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4089 (!cmd->aborted)) { 4090 cmd->trc_flags |= TRC_CTIO_ERR; 4091 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4092 return; 4093 } 4094 } 4095 4096 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4097 cmd->trc_flags |= TRC_CTIO_DONE; 4098 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4099 cmd->state = QLA_TGT_STATE_DATA_IN; 4100 4101 if (status == CTIO_SUCCESS) 4102 cmd->write_data_transferred = 1; 4103 4104 ha->tgt.tgt_ops->handle_data(cmd); 4105 return; 4106 } else if (cmd->aborted) { 4107 cmd->trc_flags |= TRC_CTIO_ABORTED; 4108 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4109 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4110 } else { 4111 cmd->trc_flags |= TRC_CTIO_STRANGE; 4112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4113 "qla_target(%d): A command in state (%d) should " 4114 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4115 } 4116 4117 if (unlikely(status != CTIO_SUCCESS) && 4118 !cmd->aborted) { 4119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4120 dump_stack(); 4121 } 4122 4123 ha->tgt.tgt_ops->free_cmd(cmd); 4124 } 4125 4126 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4127 uint8_t task_codes) 4128 { 4129 int fcp_task_attr; 4130 4131 switch (task_codes) { 4132 case ATIO_SIMPLE_QUEUE: 4133 fcp_task_attr = TCM_SIMPLE_TAG; 4134 break; 4135 case ATIO_HEAD_OF_QUEUE: 4136 fcp_task_attr = TCM_HEAD_TAG; 4137 break; 4138 case ATIO_ORDERED_QUEUE: 4139 fcp_task_attr = TCM_ORDERED_TAG; 4140 break; 4141 case ATIO_ACA_QUEUE: 4142 fcp_task_attr = TCM_ACA_TAG; 4143 break; 4144 case ATIO_UNTAGGED: 4145 fcp_task_attr = TCM_SIMPLE_TAG; 4146 break; 4147 default: 4148 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4149 "qla_target: unknown task code %x, use ORDERED instead\n", 4150 task_codes); 4151 fcp_task_attr = TCM_ORDERED_TAG; 4152 break; 4153 } 4154 4155 return fcp_task_attr; 4156 } 4157 4158 /* 4159 * Process context for I/O path into tcm_qla2xxx code 4160 */ 4161 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4162 { 4163 scsi_qla_host_t *vha = cmd->vha; 4164 struct qla_hw_data *ha = vha->hw; 4165 struct fc_port *sess = cmd->sess; 4166 struct atio_from_isp *atio = &cmd->atio; 4167 unsigned char *cdb; 4168 unsigned long flags; 4169 uint32_t data_length; 4170 int ret, fcp_task_attr, data_dir, bidi = 0; 4171 struct qla_qpair *qpair = cmd->qpair; 4172 4173 cmd->cmd_in_wq = 0; 4174 cmd->trc_flags |= TRC_DO_WORK; 4175 4176 if (cmd->aborted) { 4177 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4178 "cmd with tag %u is aborted\n", 4179 cmd->atio.u.isp24.exchange_addr); 4180 goto out_term; 4181 } 4182 4183 spin_lock_init(&cmd->cmd_lock); 4184 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4185 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4186 4187 if (atio->u.isp24.fcp_cmnd.rddata && 4188 atio->u.isp24.fcp_cmnd.wrdata) { 4189 bidi = 1; 4190 data_dir = DMA_TO_DEVICE; 4191 } else if (atio->u.isp24.fcp_cmnd.rddata) 4192 data_dir = DMA_FROM_DEVICE; 4193 else if (atio->u.isp24.fcp_cmnd.wrdata) 4194 data_dir = DMA_TO_DEVICE; 4195 else 4196 data_dir = DMA_NONE; 4197 4198 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4199 atio->u.isp24.fcp_cmnd.task_attr); 4200 data_length = get_datalen_for_atio(atio); 4201 4202 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4203 fcp_task_attr, data_dir, bidi); 4204 if (ret != 0) 4205 goto out_term; 4206 /* 4207 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4208 */ 4209 ha->tgt.tgt_ops->put_sess(sess); 4210 return; 4211 4212 out_term: 4213 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4214 /* 4215 * cmd has not sent to target yet, so pass NULL as the second 4216 * argument to qlt_send_term_exchange() and free the memory here. 4217 */ 4218 cmd->trc_flags |= TRC_DO_WORK_ERR; 4219 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4220 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4221 4222 qlt_decr_num_pend_cmds(vha); 4223 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4224 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4225 4226 ha->tgt.tgt_ops->put_sess(sess); 4227 } 4228 4229 static void qlt_do_work(struct work_struct *work) 4230 { 4231 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4232 scsi_qla_host_t *vha = cmd->vha; 4233 unsigned long flags; 4234 4235 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4236 list_del(&cmd->cmd_list); 4237 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4238 4239 __qlt_do_work(cmd); 4240 } 4241 4242 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4243 { 4244 unsigned long flags; 4245 struct qla_hw_data *ha = vha->hw; 4246 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4247 void *node; 4248 u64 key = 0; 4249 4250 ql_log(ql_log_info, vha, 0x706c, 4251 "User update Number of Active Qpairs %d\n", 4252 ha->tgt.num_act_qpairs); 4253 4254 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4255 4256 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4257 btree_remove64(&tgt->lun_qpair_map, key); 4258 4259 ha->base_qpair->lun_cnt = 0; 4260 for (key = 0; key < ha->max_qpairs; key++) 4261 if (ha->queue_pair_map[key]) 4262 ha->queue_pair_map[key]->lun_cnt = 0; 4263 4264 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4265 } 4266 4267 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4268 struct qla_tgt_cmd *cmd) 4269 { 4270 struct qla_qpair *qpair, *qp; 4271 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4272 struct qla_qpair_hint *h; 4273 4274 if (vha->flags.qpairs_available) { 4275 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4276 if (unlikely(!h)) { 4277 /* spread lun to qpair ratio evently */ 4278 int lcnt = 0, rc; 4279 struct scsi_qla_host *base_vha = 4280 pci_get_drvdata(vha->hw->pdev); 4281 4282 qpair = vha->hw->base_qpair; 4283 if (qpair->lun_cnt == 0) { 4284 qpair->lun_cnt++; 4285 h = qla_qpair_to_hint(tgt, qpair); 4286 BUG_ON(!h); 4287 rc = btree_insert64(&tgt->lun_qpair_map, 4288 cmd->unpacked_lun, h, GFP_ATOMIC); 4289 if (rc) { 4290 qpair->lun_cnt--; 4291 ql_log(ql_log_info, vha, 0xd037, 4292 "Unable to insert lun %llx into lun_qpair_map\n", 4293 cmd->unpacked_lun); 4294 } 4295 goto out; 4296 } else { 4297 lcnt = qpair->lun_cnt; 4298 } 4299 4300 h = NULL; 4301 list_for_each_entry(qp, &base_vha->qp_list, 4302 qp_list_elem) { 4303 if (qp->lun_cnt == 0) { 4304 qp->lun_cnt++; 4305 h = qla_qpair_to_hint(tgt, qp); 4306 BUG_ON(!h); 4307 rc = btree_insert64(&tgt->lun_qpair_map, 4308 cmd->unpacked_lun, h, GFP_ATOMIC); 4309 if (rc) { 4310 qp->lun_cnt--; 4311 ql_log(ql_log_info, vha, 0xd038, 4312 "Unable to insert lun %llx into lun_qpair_map\n", 4313 cmd->unpacked_lun); 4314 } 4315 qpair = qp; 4316 goto out; 4317 } else { 4318 if (qp->lun_cnt < lcnt) { 4319 lcnt = qp->lun_cnt; 4320 qpair = qp; 4321 continue; 4322 } 4323 } 4324 } 4325 BUG_ON(!qpair); 4326 qpair->lun_cnt++; 4327 h = qla_qpair_to_hint(tgt, qpair); 4328 BUG_ON(!h); 4329 rc = btree_insert64(&tgt->lun_qpair_map, 4330 cmd->unpacked_lun, h, GFP_ATOMIC); 4331 if (rc) { 4332 qpair->lun_cnt--; 4333 ql_log(ql_log_info, vha, 0xd039, 4334 "Unable to insert lun %llx into lun_qpair_map\n", 4335 cmd->unpacked_lun); 4336 } 4337 } 4338 } else { 4339 h = &tgt->qphints[0]; 4340 } 4341 out: 4342 cmd->qpair = h->qpair; 4343 cmd->se_cmd.cpuid = h->cpuid; 4344 } 4345 4346 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4347 struct fc_port *sess, 4348 struct atio_from_isp *atio) 4349 { 4350 struct qla_tgt_cmd *cmd; 4351 4352 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4353 if (!cmd) 4354 return NULL; 4355 4356 cmd->cmd_type = TYPE_TGT_CMD; 4357 memcpy(&cmd->atio, atio, sizeof(*atio)); 4358 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4359 cmd->state = QLA_TGT_STATE_NEW; 4360 cmd->tgt = vha->vha_tgt.qla_tgt; 4361 qlt_incr_num_pend_cmds(vha); 4362 cmd->vha = vha; 4363 cmd->sess = sess; 4364 cmd->loop_id = sess->loop_id; 4365 cmd->conf_compl_supported = sess->conf_compl_supported; 4366 4367 cmd->trc_flags = 0; 4368 cmd->jiffies_at_alloc = get_jiffies_64(); 4369 4370 cmd->unpacked_lun = scsilun_to_int( 4371 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4372 qlt_assign_qpair(vha, cmd); 4373 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4374 cmd->vp_idx = vha->vp_idx; 4375 cmd->edif = sess->edif.enable; 4376 4377 return cmd; 4378 } 4379 4380 /* ha->hardware_lock supposed to be held on entry */ 4381 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4382 struct atio_from_isp *atio) 4383 { 4384 struct qla_hw_data *ha = vha->hw; 4385 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4386 struct fc_port *sess; 4387 struct qla_tgt_cmd *cmd; 4388 unsigned long flags; 4389 port_id_t id; 4390 4391 if (unlikely(tgt->tgt_stop)) { 4392 ql_dbg(ql_dbg_io, vha, 0x3061, 4393 "New command while device %p is shutting down\n", tgt); 4394 return -ENODEV; 4395 } 4396 4397 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4398 if (IS_SW_RESV_ADDR(id)) 4399 return -EBUSY; 4400 4401 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4402 if (unlikely(!sess)) 4403 return -EFAULT; 4404 4405 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4406 * session deletion, but it's still in sess_del_work wq */ 4407 if (sess->deleted) { 4408 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4409 "New command while old session %p is being deleted\n", 4410 sess); 4411 return -EFAULT; 4412 } 4413 4414 /* 4415 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4416 */ 4417 if (!kref_get_unless_zero(&sess->sess_kref)) { 4418 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4419 "%s: kref_get fail, %8phC oxid %x \n", 4420 __func__, sess->port_name, 4421 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4422 return -EFAULT; 4423 } 4424 4425 cmd = qlt_get_tag(vha, sess, atio); 4426 if (!cmd) { 4427 ql_dbg(ql_dbg_io, vha, 0x3062, 4428 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4429 ha->tgt.tgt_ops->put_sess(sess); 4430 return -EBUSY; 4431 } 4432 4433 cmd->cmd_in_wq = 1; 4434 cmd->trc_flags |= TRC_NEW_CMD; 4435 4436 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4437 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4438 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4439 4440 INIT_WORK(&cmd->work, qlt_do_work); 4441 if (vha->flags.qpairs_available) { 4442 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4443 } else if (ha->msix_count) { 4444 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4445 queue_work_on(smp_processor_id(), qla_tgt_wq, 4446 &cmd->work); 4447 else 4448 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4449 &cmd->work); 4450 } else { 4451 queue_work(qla_tgt_wq, &cmd->work); 4452 } 4453 4454 return 0; 4455 } 4456 4457 /* ha->hardware_lock supposed to be held on entry */ 4458 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4459 int fn, void *iocb, int flags) 4460 { 4461 struct scsi_qla_host *vha = sess->vha; 4462 struct qla_hw_data *ha = vha->hw; 4463 struct qla_tgt_mgmt_cmd *mcmd; 4464 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4465 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4466 4467 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4468 if (!mcmd) { 4469 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4470 "qla_target(%d): Allocation of management " 4471 "command failed, some commands and their data could " 4472 "leak\n", vha->vp_idx); 4473 return -ENOMEM; 4474 } 4475 memset(mcmd, 0, sizeof(*mcmd)); 4476 mcmd->sess = sess; 4477 4478 if (iocb) { 4479 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4480 sizeof(mcmd->orig_iocb.imm_ntfy)); 4481 } 4482 mcmd->tmr_func = fn; 4483 mcmd->flags = flags; 4484 mcmd->reset_count = ha->base_qpair->chip_reset; 4485 mcmd->qpair = h->qpair; 4486 mcmd->vha = vha; 4487 mcmd->se_cmd.cpuid = h->cpuid; 4488 mcmd->unpacked_lun = lun; 4489 4490 switch (fn) { 4491 case QLA_TGT_LUN_RESET: 4492 case QLA_TGT_CLEAR_TS: 4493 case QLA_TGT_ABORT_TS: 4494 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4495 fallthrough; 4496 case QLA_TGT_CLEAR_ACA: 4497 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4498 mcmd->qpair = h->qpair; 4499 mcmd->se_cmd.cpuid = h->cpuid; 4500 break; 4501 4502 case QLA_TGT_TARGET_RESET: 4503 case QLA_TGT_NEXUS_LOSS_SESS: 4504 case QLA_TGT_NEXUS_LOSS: 4505 case QLA_TGT_ABORT_ALL: 4506 default: 4507 /* no-op */ 4508 break; 4509 } 4510 4511 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4512 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4513 &mcmd->work); 4514 4515 return 0; 4516 } 4517 4518 /* ha->hardware_lock supposed to be held on entry */ 4519 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4520 { 4521 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4522 struct qla_hw_data *ha = vha->hw; 4523 struct fc_port *sess; 4524 u64 unpacked_lun; 4525 int fn; 4526 unsigned long flags; 4527 4528 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4529 4530 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4531 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4532 a->u.isp24.fcp_hdr.s_id); 4533 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4534 4535 unpacked_lun = 4536 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4537 4538 if (sess == NULL || sess->deleted) 4539 return -EFAULT; 4540 4541 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4542 } 4543 4544 /* ha->hardware_lock supposed to be held on entry */ 4545 static int __qlt_abort_task(struct scsi_qla_host *vha, 4546 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4547 { 4548 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4549 struct qla_hw_data *ha = vha->hw; 4550 struct qla_tgt_mgmt_cmd *mcmd; 4551 u64 unpacked_lun; 4552 int rc; 4553 4554 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4555 if (mcmd == NULL) { 4556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4557 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4558 vha->vp_idx, __func__); 4559 return -ENOMEM; 4560 } 4561 memset(mcmd, 0, sizeof(*mcmd)); 4562 4563 mcmd->sess = sess; 4564 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4565 sizeof(mcmd->orig_iocb.imm_ntfy)); 4566 4567 unpacked_lun = 4568 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4569 mcmd->reset_count = ha->base_qpair->chip_reset; 4570 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4571 mcmd->qpair = ha->base_qpair; 4572 4573 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4574 le16_to_cpu(iocb->u.isp2x.seq_id)); 4575 if (rc != 0) { 4576 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4577 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4578 vha->vp_idx, rc); 4579 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4580 return -EFAULT; 4581 } 4582 4583 return 0; 4584 } 4585 4586 /* ha->hardware_lock supposed to be held on entry */ 4587 static int qlt_abort_task(struct scsi_qla_host *vha, 4588 struct imm_ntfy_from_isp *iocb) 4589 { 4590 struct qla_hw_data *ha = vha->hw; 4591 struct fc_port *sess; 4592 int loop_id; 4593 unsigned long flags; 4594 4595 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4596 4597 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4598 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4599 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4600 4601 if (sess == NULL) { 4602 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4603 "qla_target(%d): task abort for unexisting " 4604 "session\n", vha->vp_idx); 4605 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4606 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4607 } 4608 4609 return __qlt_abort_task(vha, iocb, sess); 4610 } 4611 4612 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4613 { 4614 if (rc != MBS_COMMAND_COMPLETE) { 4615 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4616 "%s: se_sess %p / sess %p from" 4617 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4618 " LOGO failed: %#x\n", 4619 __func__, 4620 fcport->se_sess, 4621 fcport, 4622 fcport->port_name, fcport->loop_id, 4623 fcport->d_id.b.domain, fcport->d_id.b.area, 4624 fcport->d_id.b.al_pa, rc); 4625 } 4626 4627 fcport->logout_completed = 1; 4628 } 4629 4630 /* 4631 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4632 * 4633 * Schedules sessions with matching port_id/loop_id but different wwn for 4634 * deletion. Returns existing session with matching wwn if present. 4635 * Null otherwise. 4636 */ 4637 struct fc_port * 4638 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4639 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4640 { 4641 struct fc_port *sess = NULL, *other_sess; 4642 uint64_t other_wwn; 4643 4644 *conflict_sess = NULL; 4645 4646 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4647 4648 other_wwn = wwn_to_u64(other_sess->port_name); 4649 4650 if (wwn == other_wwn) { 4651 WARN_ON(sess); 4652 sess = other_sess; 4653 continue; 4654 } 4655 4656 /* find other sess with nport_id collision */ 4657 if (port_id.b24 == other_sess->d_id.b24) { 4658 if (loop_id != other_sess->loop_id) { 4659 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4660 "Invalidating sess %p loop_id %d wwn %llx.\n", 4661 other_sess, other_sess->loop_id, other_wwn); 4662 4663 /* 4664 * logout_on_delete is set by default, but another 4665 * session that has the same s_id/loop_id combo 4666 * might have cleared it when requested this session 4667 * deletion, so don't touch it 4668 */ 4669 qlt_schedule_sess_for_deletion(other_sess); 4670 } else { 4671 /* 4672 * Another wwn used to have our s_id/loop_id 4673 * kill the session, but don't free the loop_id 4674 */ 4675 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4676 "Invalidating sess %p loop_id %d wwn %llx.\n", 4677 other_sess, other_sess->loop_id, other_wwn); 4678 4679 other_sess->keep_nport_handle = 1; 4680 if (other_sess->disc_state != DSC_DELETED) 4681 *conflict_sess = other_sess; 4682 qlt_schedule_sess_for_deletion(other_sess); 4683 } 4684 continue; 4685 } 4686 4687 /* find other sess with nport handle collision */ 4688 if ((loop_id == other_sess->loop_id) && 4689 (loop_id != FC_NO_LOOP_ID)) { 4690 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4691 "Invalidating sess %p loop_id %d wwn %llx.\n", 4692 other_sess, other_sess->loop_id, other_wwn); 4693 4694 /* Same loop_id but different s_id 4695 * Ok to kill and logout */ 4696 qlt_schedule_sess_for_deletion(other_sess); 4697 } 4698 } 4699 4700 return sess; 4701 } 4702 4703 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4704 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4705 { 4706 struct qla_tgt_sess_op *op; 4707 struct qla_tgt_cmd *cmd; 4708 uint32_t key; 4709 int count = 0; 4710 unsigned long flags; 4711 4712 key = (((u32)s_id->b.domain << 16) | 4713 ((u32)s_id->b.area << 8) | 4714 ((u32)s_id->b.al_pa)); 4715 4716 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4717 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4718 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4719 4720 if (op_key == key) { 4721 op->aborted = true; 4722 count++; 4723 } 4724 } 4725 4726 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4727 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4728 4729 if (cmd_key == key) { 4730 cmd->aborted = 1; 4731 count++; 4732 } 4733 } 4734 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4735 4736 return count; 4737 } 4738 4739 static int qlt_handle_login(struct scsi_qla_host *vha, 4740 struct imm_ntfy_from_isp *iocb) 4741 { 4742 struct fc_port *sess = NULL, *conflict_sess = NULL; 4743 uint64_t wwn; 4744 port_id_t port_id; 4745 uint16_t loop_id, wd3_lo; 4746 int res = 0; 4747 struct qlt_plogi_ack_t *pla; 4748 unsigned long flags; 4749 4750 lockdep_assert_held(&vha->hw->hardware_lock); 4751 4752 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4753 4754 port_id.b.domain = iocb->u.isp24.port_id[2]; 4755 port_id.b.area = iocb->u.isp24.port_id[1]; 4756 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4757 port_id.b.rsvd_1 = 0; 4758 4759 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4760 4761 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4762 abort_cmds_for_s_id(vha, &port_id); 4763 4764 if (wwn) { 4765 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4766 sess = qlt_find_sess_invalidate_other(vha, wwn, 4767 port_id, loop_id, &conflict_sess); 4768 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4769 } else { 4770 ql_dbg(ql_dbg_disc, vha, 0xffff, 4771 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4772 __func__, __LINE__, loop_id, port_id.b24); 4773 qlt_send_term_imm_notif(vha, iocb, 1); 4774 goto out; 4775 } 4776 4777 if (IS_SW_RESV_ADDR(port_id)) { 4778 res = 1; 4779 goto out; 4780 } 4781 4782 if (vha->hw->flags.edif_enabled && 4783 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4784 iocb->u.isp24.status_subcode == ELS_PLOGI && 4785 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4786 ql_dbg(ql_dbg_disc, vha, 0xffff, 4787 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4788 __func__, __LINE__, loop_id, port_id.b24); 4789 qlt_send_term_imm_notif(vha, iocb, 1); 4790 goto out; 4791 } 4792 4793 if (vha->hw->flags.edif_enabled) { 4794 if (DBELL_INACTIVE(vha)) { 4795 ql_dbg(ql_dbg_disc, vha, 0xffff, 4796 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4797 __func__, __LINE__, loop_id, port_id.b24); 4798 qlt_send_term_imm_notif(vha, iocb, 1); 4799 goto out; 4800 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4801 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4802 ql_dbg(ql_dbg_disc, vha, 0xffff, 4803 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4804 __func__, __LINE__, loop_id, port_id.b24); 4805 qlt_send_term_imm_notif(vha, iocb, 1); 4806 goto out; 4807 } 4808 } 4809 4810 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4811 if (!pla) { 4812 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4813 "%s %d %8phC Term INOT due to mem alloc fail", 4814 __func__, __LINE__, 4815 iocb->u.isp24.port_name); 4816 qlt_send_term_imm_notif(vha, iocb, 1); 4817 goto out; 4818 } 4819 4820 if (conflict_sess) { 4821 conflict_sess->login_gen++; 4822 qlt_plogi_ack_link(vha, pla, conflict_sess, 4823 QLT_PLOGI_LINK_CONFLICT); 4824 } 4825 4826 if (!sess) { 4827 pla->ref_count++; 4828 ql_dbg(ql_dbg_disc, vha, 0xffff, 4829 "%s %d %8phC post new sess\n", 4830 __func__, __LINE__, iocb->u.isp24.port_name); 4831 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4832 qla24xx_post_newsess_work(vha, &port_id, 4833 iocb->u.isp24.port_name, 4834 iocb->u.isp24.u.plogi.node_name, 4835 pla, 0); 4836 else 4837 qla24xx_post_newsess_work(vha, &port_id, 4838 iocb->u.isp24.port_name, NULL, 4839 pla, 0); 4840 4841 goto out; 4842 } 4843 4844 if (sess->disc_state == DSC_UPD_FCPORT) { 4845 u16 sec; 4846 4847 /* 4848 * Remote port registration is still going on from 4849 * previous login. Allow it to finish before we 4850 * accept the new login. 4851 */ 4852 sess->next_disc_state = DSC_DELETE_PEND; 4853 sec = jiffies_to_msecs(jiffies - 4854 sess->jiffies_at_registration) / 1000; 4855 if (sess->sec_since_registration < sec && sec && 4856 !(sec % 5)) { 4857 sess->sec_since_registration = sec; 4858 ql_dbg(ql_dbg_disc, vha, 0xffff, 4859 "%s %8phC - Slow Rport registration (%d Sec)\n", 4860 __func__, sess->port_name, sec); 4861 } 4862 4863 if (!conflict_sess) { 4864 list_del(&pla->list); 4865 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4866 } 4867 4868 qlt_send_term_imm_notif(vha, iocb, 1); 4869 goto out; 4870 } 4871 4872 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4873 sess->d_id = port_id; 4874 sess->login_gen++; 4875 sess->loop_id = loop_id; 4876 4877 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4878 /* remote port has assigned Port ID */ 4879 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4880 vha->d_id = sess->d_id; 4881 4882 ql_dbg(ql_dbg_disc, vha, 0xffff, 4883 "%s %8phC - send port online\n", 4884 __func__, sess->port_name); 4885 4886 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4887 sess->d_id.b24); 4888 } 4889 4890 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4891 sess->fw_login_state = DSC_LS_PRLI_PEND; 4892 sess->local = 0; 4893 sess->loop_id = loop_id; 4894 sess->d_id = port_id; 4895 sess->fw_login_state = DSC_LS_PRLI_PEND; 4896 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4897 4898 if (wd3_lo & BIT_7) 4899 sess->conf_compl_supported = 1; 4900 4901 if ((wd3_lo & BIT_4) == 0) 4902 sess->port_type = FCT_INITIATOR; 4903 else 4904 sess->port_type = FCT_TARGET; 4905 4906 } else 4907 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4908 4909 4910 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4911 "%s %d %8phC DS %d\n", 4912 __func__, __LINE__, sess->port_name, sess->disc_state); 4913 4914 switch (sess->disc_state) { 4915 case DSC_DELETED: 4916 case DSC_LOGIN_PEND: 4917 qlt_plogi_ack_unref(vha, pla); 4918 break; 4919 4920 default: 4921 /* 4922 * Under normal circumstances we want to release nport handle 4923 * during LOGO process to avoid nport handle leaks inside FW. 4924 * The exception is when LOGO is done while another PLOGI with 4925 * the same nport handle is waiting as might be the case here. 4926 * Note: there is always a possibily of a race where session 4927 * deletion has already started for other reasons (e.g. ACL 4928 * removal) and now PLOGI arrives: 4929 * 1. if PLOGI arrived in FW after nport handle has been freed, 4930 * FW must have assigned this PLOGI a new/same handle and we 4931 * can proceed ACK'ing it as usual when session deletion 4932 * completes. 4933 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4934 * bit reached it, the handle has now been released. We'll 4935 * get an error when we ACK this PLOGI. Nothing will be sent 4936 * back to initiator. Initiator should eventually retry 4937 * PLOGI and situation will correct itself. 4938 */ 4939 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4940 (sess->d_id.b24 == port_id.b24)); 4941 4942 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4943 "%s %d %8phC post del sess\n", 4944 __func__, __LINE__, sess->port_name); 4945 4946 4947 qlt_schedule_sess_for_deletion(sess); 4948 break; 4949 } 4950 out: 4951 return res; 4952 } 4953 4954 /* 4955 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4956 */ 4957 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4958 struct imm_ntfy_from_isp *iocb) 4959 { 4960 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4961 struct qla_hw_data *ha = vha->hw; 4962 struct fc_port *sess = NULL, *conflict_sess = NULL; 4963 uint64_t wwn; 4964 port_id_t port_id; 4965 uint16_t loop_id; 4966 uint16_t wd3_lo; 4967 int res = 0; 4968 unsigned long flags; 4969 4970 lockdep_assert_held(&ha->hardware_lock); 4971 4972 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4973 4974 port_id.b.domain = iocb->u.isp24.port_id[2]; 4975 port_id.b.area = iocb->u.isp24.port_id[1]; 4976 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4977 port_id.b.rsvd_1 = 0; 4978 4979 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4980 4981 ql_dbg(ql_dbg_disc, vha, 0xf026, 4982 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4983 vha->vp_idx, iocb->u.isp24.port_id[2], 4984 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4985 iocb->u.isp24.status_subcode, loop_id, 4986 iocb->u.isp24.port_name); 4987 4988 /* res = 1 means ack at the end of thread 4989 * res = 0 means ack async/later. 4990 */ 4991 switch (iocb->u.isp24.status_subcode) { 4992 case ELS_PLOGI: 4993 res = qlt_handle_login(vha, iocb); 4994 break; 4995 4996 case ELS_PRLI: 4997 if (N2N_TOPO(ha)) { 4998 sess = qla2x00_find_fcport_by_wwpn(vha, 4999 iocb->u.isp24.port_name, 1); 5000 5001 if (vha->hw->flags.edif_enabled && sess && 5002 (!(sess->flags & FCF_FCSP_DEVICE) || 5003 !sess->edif.authok)) { 5004 ql_dbg(ql_dbg_disc, vha, 0xffff, 5005 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 5006 __func__, __LINE__, iocb->u.isp24.port_name); 5007 qlt_send_term_imm_notif(vha, iocb, 1); 5008 break; 5009 } 5010 5011 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5012 ql_dbg(ql_dbg_disc, vha, 0xffff, 5013 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5014 __func__, __LINE__, 5015 iocb->u.isp24.port_name); 5016 qlt_send_term_imm_notif(vha, iocb, 1); 5017 break; 5018 } 5019 5020 res = qlt_handle_login(vha, iocb); 5021 break; 5022 } 5023 5024 if (IS_SW_RESV_ADDR(port_id)) { 5025 res = 1; 5026 break; 5027 } 5028 5029 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5030 5031 if (wwn) { 5032 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5033 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5034 loop_id, &conflict_sess); 5035 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5036 } 5037 5038 if (conflict_sess) { 5039 switch (conflict_sess->disc_state) { 5040 case DSC_DELETED: 5041 case DSC_DELETE_PEND: 5042 break; 5043 default: 5044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5045 "PRLI with conflicting sess %p port %8phC\n", 5046 conflict_sess, conflict_sess->port_name); 5047 conflict_sess->fw_login_state = 5048 DSC_LS_PORT_UNAVAIL; 5049 qlt_send_term_imm_notif(vha, iocb, 1); 5050 res = 0; 5051 break; 5052 } 5053 } 5054 5055 if (sess != NULL) { 5056 bool delete = false; 5057 int sec; 5058 5059 if (vha->hw->flags.edif_enabled && sess && 5060 (!(sess->flags & FCF_FCSP_DEVICE) || 5061 !sess->edif.authok)) { 5062 ql_dbg(ql_dbg_disc, vha, 0xffff, 5063 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5064 __func__, __LINE__, iocb->u.isp24.port_name); 5065 qlt_send_term_imm_notif(vha, iocb, 1); 5066 break; 5067 } 5068 5069 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5070 switch (sess->fw_login_state) { 5071 case DSC_LS_PLOGI_PEND: 5072 case DSC_LS_PLOGI_COMP: 5073 case DSC_LS_PRLI_COMP: 5074 break; 5075 default: 5076 delete = true; 5077 break; 5078 } 5079 5080 switch (sess->disc_state) { 5081 case DSC_UPD_FCPORT: 5082 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5083 flags); 5084 5085 sec = jiffies_to_msecs(jiffies - 5086 sess->jiffies_at_registration)/1000; 5087 if (sess->sec_since_registration < sec && sec && 5088 !(sec % 5)) { 5089 sess->sec_since_registration = sec; 5090 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5091 "%s %8phC : Slow Rport registration(%d Sec)\n", 5092 __func__, sess->port_name, sec); 5093 } 5094 qlt_send_term_imm_notif(vha, iocb, 1); 5095 return 0; 5096 5097 case DSC_LOGIN_PEND: 5098 case DSC_GPDB: 5099 case DSC_LOGIN_COMPLETE: 5100 case DSC_ADISC: 5101 delete = false; 5102 break; 5103 default: 5104 break; 5105 } 5106 5107 if (delete) { 5108 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5109 flags); 5110 /* 5111 * Impatient initiator sent PRLI before last 5112 * PLOGI could finish. Will force him to re-try, 5113 * while last one finishes. 5114 */ 5115 ql_log(ql_log_warn, sess->vha, 0xf095, 5116 "sess %p PRLI received, before plogi ack.\n", 5117 sess); 5118 qlt_send_term_imm_notif(vha, iocb, 1); 5119 res = 0; 5120 break; 5121 } 5122 5123 /* 5124 * This shouldn't happen under normal circumstances, 5125 * since we have deleted the old session during PLOGI 5126 */ 5127 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5128 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5129 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5130 5131 sess->local = 0; 5132 sess->loop_id = loop_id; 5133 sess->d_id = port_id; 5134 sess->fw_login_state = DSC_LS_PRLI_PEND; 5135 5136 if (wd3_lo & BIT_7) 5137 sess->conf_compl_supported = 1; 5138 5139 if ((wd3_lo & BIT_4) == 0) 5140 sess->port_type = FCT_INITIATOR; 5141 else 5142 sess->port_type = FCT_TARGET; 5143 5144 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5145 } 5146 res = 1; /* send notify ack */ 5147 5148 /* Make session global (not used in fabric mode) */ 5149 if (ha->current_topology != ISP_CFG_F) { 5150 if (sess) { 5151 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5152 "%s %d %8phC post nack\n", 5153 __func__, __LINE__, sess->port_name); 5154 qla24xx_post_nack_work(vha, sess, iocb, 5155 SRB_NACK_PRLI); 5156 res = 0; 5157 } else { 5158 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5159 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5160 qla2xxx_wake_dpc(vha); 5161 } 5162 } else { 5163 if (sess) { 5164 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5165 "%s %d %8phC post nack\n", 5166 __func__, __LINE__, sess->port_name); 5167 qla24xx_post_nack_work(vha, sess, iocb, 5168 SRB_NACK_PRLI); 5169 res = 0; 5170 } 5171 } 5172 break; 5173 5174 case ELS_TPRLO: 5175 if (le16_to_cpu(iocb->u.isp24.flags) & 5176 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5177 loop_id = 0xFFFF; 5178 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5179 res = 1; 5180 break; 5181 } 5182 fallthrough; 5183 case ELS_LOGO: 5184 case ELS_PRLO: 5185 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5186 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5187 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5188 5189 if (sess) { 5190 sess->login_gen++; 5191 sess->fw_login_state = DSC_LS_LOGO_PEND; 5192 sess->logo_ack_needed = 1; 5193 memcpy(sess->iocb, iocb, IOCB_SIZE); 5194 } 5195 5196 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5197 5198 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5199 "%s: logo %llx res %d sess %p ", 5200 __func__, wwn, res, sess); 5201 if (res == 0) { 5202 /* 5203 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5204 * for LOGO_ACK & sess delete 5205 */ 5206 BUG_ON(!sess); 5207 res = 0; 5208 } else { 5209 /* cmd did not go to upper layer. */ 5210 if (sess) { 5211 qlt_schedule_sess_for_deletion(sess); 5212 res = 0; 5213 } 5214 /* else logo will be ack */ 5215 } 5216 break; 5217 case ELS_PDISC: 5218 case ELS_ADISC: 5219 { 5220 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5221 5222 if (tgt->link_reinit_iocb_pending) { 5223 qlt_send_notify_ack(ha->base_qpair, 5224 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5225 tgt->link_reinit_iocb_pending = 0; 5226 } 5227 5228 sess = qla2x00_find_fcport_by_wwpn(vha, 5229 iocb->u.isp24.port_name, 1); 5230 if (sess) { 5231 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5232 "sess %p lid %d|%d DS %d LS %d\n", 5233 sess, sess->loop_id, loop_id, 5234 sess->disc_state, sess->fw_login_state); 5235 } 5236 5237 res = 1; /* send notify ack */ 5238 break; 5239 } 5240 5241 case ELS_FLOGI: /* should never happen */ 5242 default: 5243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5244 "qla_target(%d): Unsupported ELS command %x " 5245 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5246 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5247 break; 5248 } 5249 5250 ql_dbg(ql_dbg_disc, vha, 0xf026, 5251 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5252 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5253 5254 return res; 5255 } 5256 5257 /* 5258 * ha->hardware_lock supposed to be held on entry. 5259 * Might drop it, then reacquire. 5260 */ 5261 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5262 struct imm_ntfy_from_isp *iocb) 5263 { 5264 struct qla_hw_data *ha = vha->hw; 5265 uint32_t add_flags = 0; 5266 int send_notify_ack = 1; 5267 uint16_t status; 5268 5269 lockdep_assert_held(&ha->hardware_lock); 5270 5271 status = le16_to_cpu(iocb->u.isp2x.status); 5272 switch (status) { 5273 case IMM_NTFY_LIP_RESET: 5274 { 5275 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5276 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5277 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5278 iocb->u.isp24.status_subcode); 5279 5280 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5281 send_notify_ack = 0; 5282 break; 5283 } 5284 5285 case IMM_NTFY_LIP_LINK_REINIT: 5286 { 5287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5288 5289 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5290 "qla_target(%d): LINK REINIT (loop %#x, " 5291 "subcode %x)\n", vha->vp_idx, 5292 le16_to_cpu(iocb->u.isp24.nport_handle), 5293 iocb->u.isp24.status_subcode); 5294 if (tgt->link_reinit_iocb_pending) { 5295 qlt_send_notify_ack(ha->base_qpair, 5296 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5297 } 5298 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5299 tgt->link_reinit_iocb_pending = 1; 5300 /* 5301 * QLogic requires to wait after LINK REINIT for possible 5302 * PDISC or ADISC ELS commands 5303 */ 5304 send_notify_ack = 0; 5305 break; 5306 } 5307 5308 case IMM_NTFY_PORT_LOGOUT: 5309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5310 "qla_target(%d): Port logout (loop " 5311 "%#x, subcode %x)\n", vha->vp_idx, 5312 le16_to_cpu(iocb->u.isp24.nport_handle), 5313 iocb->u.isp24.status_subcode); 5314 5315 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5316 send_notify_ack = 0; 5317 /* The sessions will be cleared in the callback, if needed */ 5318 break; 5319 5320 case IMM_NTFY_GLBL_TPRLO: 5321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5322 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5323 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5324 send_notify_ack = 0; 5325 /* The sessions will be cleared in the callback, if needed */ 5326 break; 5327 5328 case IMM_NTFY_PORT_CONFIG: 5329 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5330 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5331 status); 5332 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5333 send_notify_ack = 0; 5334 /* The sessions will be cleared in the callback, if needed */ 5335 break; 5336 5337 case IMM_NTFY_GLBL_LOGO: 5338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5339 "qla_target(%d): Link failure detected\n", 5340 vha->vp_idx); 5341 /* I_T nexus loss */ 5342 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5343 send_notify_ack = 0; 5344 break; 5345 5346 case IMM_NTFY_IOCB_OVERFLOW: 5347 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5348 "qla_target(%d): Cannot provide requested " 5349 "capability (IOCB overflowed the immediate notify " 5350 "resource count)\n", vha->vp_idx); 5351 break; 5352 5353 case IMM_NTFY_ABORT_TASK: 5354 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5355 "qla_target(%d): Abort Task (S %08x I %#x -> " 5356 "L %#x)\n", vha->vp_idx, 5357 le16_to_cpu(iocb->u.isp2x.seq_id), 5358 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5359 le16_to_cpu(iocb->u.isp2x.lun)); 5360 if (qlt_abort_task(vha, iocb) == 0) 5361 send_notify_ack = 0; 5362 break; 5363 5364 case IMM_NTFY_RESOURCE: 5365 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5366 "qla_target(%d): Out of resources, host %ld\n", 5367 vha->vp_idx, vha->host_no); 5368 break; 5369 5370 case IMM_NTFY_MSG_RX: 5371 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5372 "qla_target(%d): Immediate notify task %x\n", 5373 vha->vp_idx, iocb->u.isp2x.task_flags); 5374 break; 5375 5376 case IMM_NTFY_ELS: 5377 if (qlt_24xx_handle_els(vha, iocb) == 0) 5378 send_notify_ack = 0; 5379 break; 5380 default: 5381 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5382 "qla_target(%d): Received unknown immediate " 5383 "notify status %x\n", vha->vp_idx, status); 5384 break; 5385 } 5386 5387 if (send_notify_ack) 5388 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5389 0, 0); 5390 } 5391 5392 /* 5393 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5394 * This function sends busy to ISP 2xxx or 24xx. 5395 */ 5396 static int __qlt_send_busy(struct qla_qpair *qpair, 5397 struct atio_from_isp *atio, uint16_t status) 5398 { 5399 struct scsi_qla_host *vha = qpair->vha; 5400 struct ctio7_to_24xx *ctio24; 5401 struct qla_hw_data *ha = vha->hw; 5402 request_t *pkt; 5403 struct fc_port *sess = NULL; 5404 unsigned long flags; 5405 u16 temp; 5406 port_id_t id; 5407 5408 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5409 5410 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5411 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5412 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5413 if (!sess) { 5414 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5415 return 0; 5416 } 5417 /* Sending marker isn't necessary, since we called from ISR */ 5418 5419 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5420 if (!pkt) { 5421 ql_dbg(ql_dbg_io, vha, 0x3063, 5422 "qla_target(%d): %s failed: unable to allocate " 5423 "request packet", vha->vp_idx, __func__); 5424 return -ENOMEM; 5425 } 5426 5427 qpair->tgt_counters.num_q_full_sent++; 5428 pkt->entry_count = 1; 5429 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5430 5431 ctio24 = (struct ctio7_to_24xx *)pkt; 5432 ctio24->entry_type = CTIO_TYPE7; 5433 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5434 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5435 ctio24->vp_index = vha->vp_idx; 5436 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5437 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5438 temp = (atio->u.isp24.attr << 9) | 5439 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5440 CTIO7_FLAGS_DONT_RET_CTIO; 5441 ctio24->u.status1.flags = cpu_to_le16(temp); 5442 /* 5443 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5444 * if the explicit conformation is used. 5445 */ 5446 ctio24->u.status1.ox_id = 5447 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5448 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5449 5450 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5451 5452 if (ctio24->u.status1.residual != 0) 5453 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5454 5455 /* Memory Barrier */ 5456 wmb(); 5457 if (qpair->reqq_start_iocbs) 5458 qpair->reqq_start_iocbs(qpair); 5459 else 5460 qla2x00_start_iocbs(vha, qpair->req); 5461 return 0; 5462 } 5463 5464 /* 5465 * This routine is used to allocate a command for either a QFull condition 5466 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5467 * out previously. 5468 */ 5469 static void 5470 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5471 struct atio_from_isp *atio, uint16_t status, int qfull) 5472 { 5473 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5474 struct qla_hw_data *ha = vha->hw; 5475 struct fc_port *sess; 5476 struct qla_tgt_cmd *cmd; 5477 unsigned long flags; 5478 5479 if (unlikely(tgt->tgt_stop)) { 5480 ql_dbg(ql_dbg_io, vha, 0x300a, 5481 "New command while device %p is shutting down\n", tgt); 5482 return; 5483 } 5484 5485 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5486 vha->hw->tgt.num_qfull_cmds_dropped++; 5487 if (vha->hw->tgt.num_qfull_cmds_dropped > 5488 vha->qla_stats.stat_max_qfull_cmds_dropped) 5489 vha->qla_stats.stat_max_qfull_cmds_dropped = 5490 vha->hw->tgt.num_qfull_cmds_dropped; 5491 5492 ql_dbg(ql_dbg_io, vha, 0x3068, 5493 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5494 vha->vp_idx, __func__, 5495 vha->hw->tgt.num_qfull_cmds_dropped); 5496 5497 qlt_chk_exch_leak_thresh_hold(vha); 5498 return; 5499 } 5500 5501 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5502 (vha, atio->u.isp24.fcp_hdr.s_id); 5503 if (!sess) 5504 return; 5505 5506 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5507 if (!cmd) { 5508 ql_dbg(ql_dbg_io, vha, 0x3009, 5509 "qla_target(%d): %s: Allocation of cmd failed\n", 5510 vha->vp_idx, __func__); 5511 5512 vha->hw->tgt.num_qfull_cmds_dropped++; 5513 if (vha->hw->tgt.num_qfull_cmds_dropped > 5514 vha->qla_stats.stat_max_qfull_cmds_dropped) 5515 vha->qla_stats.stat_max_qfull_cmds_dropped = 5516 vha->hw->tgt.num_qfull_cmds_dropped; 5517 5518 qlt_chk_exch_leak_thresh_hold(vha); 5519 return; 5520 } 5521 5522 qlt_incr_num_pend_cmds(vha); 5523 INIT_LIST_HEAD(&cmd->cmd_list); 5524 memcpy(&cmd->atio, atio, sizeof(*atio)); 5525 5526 cmd->tgt = vha->vha_tgt.qla_tgt; 5527 cmd->vha = vha; 5528 cmd->reset_count = ha->base_qpair->chip_reset; 5529 cmd->q_full = 1; 5530 cmd->qpair = ha->base_qpair; 5531 5532 if (qfull) { 5533 cmd->q_full = 1; 5534 /* NOTE: borrowing the state field to carry the status */ 5535 cmd->state = status; 5536 } else 5537 cmd->term_exchg = 1; 5538 5539 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5540 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5541 5542 vha->hw->tgt.num_qfull_cmds_alloc++; 5543 if (vha->hw->tgt.num_qfull_cmds_alloc > 5544 vha->qla_stats.stat_max_qfull_cmds_alloc) 5545 vha->qla_stats.stat_max_qfull_cmds_alloc = 5546 vha->hw->tgt.num_qfull_cmds_alloc; 5547 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5548 } 5549 5550 int 5551 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5552 { 5553 struct scsi_qla_host *vha = qpair->vha; 5554 struct qla_hw_data *ha = vha->hw; 5555 unsigned long flags; 5556 struct qla_tgt_cmd *cmd, *tcmd; 5557 struct list_head free_list, q_full_list; 5558 int rc = 0; 5559 5560 if (list_empty(&ha->tgt.q_full_list)) 5561 return 0; 5562 5563 INIT_LIST_HEAD(&free_list); 5564 INIT_LIST_HEAD(&q_full_list); 5565 5566 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5567 if (list_empty(&ha->tgt.q_full_list)) { 5568 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5569 return 0; 5570 } 5571 5572 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5573 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5574 5575 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5576 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5577 if (cmd->q_full) 5578 /* cmd->state is a borrowed field to hold status */ 5579 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5580 else if (cmd->term_exchg) 5581 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5582 5583 if (rc == -ENOMEM) 5584 break; 5585 5586 if (cmd->q_full) 5587 ql_dbg(ql_dbg_io, vha, 0x3006, 5588 "%s: busy sent for ox_id[%04x]\n", __func__, 5589 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5590 else if (cmd->term_exchg) 5591 ql_dbg(ql_dbg_io, vha, 0x3007, 5592 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5593 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5594 else 5595 ql_dbg(ql_dbg_io, vha, 0x3008, 5596 "%s: Unexpected cmd in QFull list %p\n", __func__, 5597 cmd); 5598 5599 list_move_tail(&cmd->cmd_list, &free_list); 5600 5601 /* piggy back on hardware_lock for protection */ 5602 vha->hw->tgt.num_qfull_cmds_alloc--; 5603 } 5604 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5605 5606 cmd = NULL; 5607 5608 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5609 list_del(&cmd->cmd_list); 5610 /* This cmd was never sent to TCM. There is no need 5611 * to schedule free or call free_cmd 5612 */ 5613 qlt_free_cmd(cmd); 5614 } 5615 5616 if (!list_empty(&q_full_list)) { 5617 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5618 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5619 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5620 } 5621 5622 return rc; 5623 } 5624 5625 static void 5626 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5627 uint16_t status) 5628 { 5629 int rc = 0; 5630 struct scsi_qla_host *vha = qpair->vha; 5631 5632 rc = __qlt_send_busy(qpair, atio, status); 5633 if (rc == -ENOMEM) 5634 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5635 } 5636 5637 static int 5638 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5639 struct atio_from_isp *atio, uint8_t ha_locked) 5640 { 5641 struct qla_hw_data *ha = vha->hw; 5642 unsigned long flags; 5643 5644 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5645 return 0; 5646 5647 if (!ha_locked) 5648 spin_lock_irqsave(&ha->hardware_lock, flags); 5649 qlt_send_busy(qpair, atio, qla_sam_status); 5650 if (!ha_locked) 5651 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5652 5653 return 1; 5654 } 5655 5656 /* ha->hardware_lock supposed to be held on entry */ 5657 /* called via callback from qla2xxx */ 5658 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5659 struct atio_from_isp *atio, uint8_t ha_locked) 5660 { 5661 struct qla_hw_data *ha = vha->hw; 5662 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5663 int rc; 5664 unsigned long flags = 0; 5665 5666 if (unlikely(tgt == NULL)) { 5667 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5668 "ATIO pkt, but no tgt (ha %p)", ha); 5669 return; 5670 } 5671 /* 5672 * In tgt_stop mode we also should allow all requests to pass. 5673 * Otherwise, some commands can stuck. 5674 */ 5675 5676 tgt->atio_irq_cmd_count++; 5677 5678 switch (atio->u.raw.entry_type) { 5679 case ATIO_TYPE7: 5680 if (unlikely(atio->u.isp24.exchange_addr == 5681 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5682 ql_dbg(ql_dbg_io, vha, 0x3065, 5683 "qla_target(%d): ATIO_TYPE7 " 5684 "received with UNKNOWN exchange address, " 5685 "sending QUEUE_FULL\n", vha->vp_idx); 5686 if (!ha_locked) 5687 spin_lock_irqsave(&ha->hardware_lock, flags); 5688 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5689 if (!ha_locked) 5690 spin_unlock_irqrestore(&ha->hardware_lock, 5691 flags); 5692 break; 5693 } 5694 5695 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5696 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5697 atio, ha_locked); 5698 if (rc != 0) { 5699 tgt->atio_irq_cmd_count--; 5700 return; 5701 } 5702 rc = qlt_handle_cmd_for_atio(vha, atio); 5703 } else { 5704 rc = qlt_handle_task_mgmt(vha, atio); 5705 } 5706 if (unlikely(rc != 0)) { 5707 if (!ha_locked) 5708 spin_lock_irqsave(&ha->hardware_lock, flags); 5709 switch (rc) { 5710 case -ENODEV: 5711 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5712 "qla_target: Unable to send command to target\n"); 5713 break; 5714 case -EBADF: 5715 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5716 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5717 qlt_send_term_exchange(ha->base_qpair, NULL, 5718 atio, 1, 0); 5719 break; 5720 case -EBUSY: 5721 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5722 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5723 vha->vp_idx); 5724 qlt_send_busy(ha->base_qpair, atio, 5725 tc_sam_status); 5726 break; 5727 default: 5728 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5729 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5730 vha->vp_idx); 5731 qlt_send_busy(ha->base_qpair, atio, 5732 qla_sam_status); 5733 break; 5734 } 5735 if (!ha_locked) 5736 spin_unlock_irqrestore(&ha->hardware_lock, 5737 flags); 5738 } 5739 break; 5740 5741 case IMMED_NOTIFY_TYPE: 5742 { 5743 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5744 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5745 "qla_target(%d): Received ATIO packet %x " 5746 "with error status %x\n", vha->vp_idx, 5747 atio->u.raw.entry_type, 5748 atio->u.isp2x.entry_status); 5749 break; 5750 } 5751 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5752 5753 if (!ha_locked) 5754 spin_lock_irqsave(&ha->hardware_lock, flags); 5755 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5756 if (!ha_locked) 5757 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5758 break; 5759 } 5760 5761 default: 5762 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5763 "qla_target(%d): Received unknown ATIO atio " 5764 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5765 break; 5766 } 5767 5768 tgt->atio_irq_cmd_count--; 5769 } 5770 5771 /* 5772 * qpair lock is assume to be held 5773 * rc = 0 : send terminate & abts respond 5774 * rc != 0: do not send term & abts respond 5775 */ 5776 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5777 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5778 { 5779 struct qla_hw_data *ha = vha->hw; 5780 int rc = 0; 5781 5782 /* 5783 * Detect unresolved exchange. If the same ABTS is unable 5784 * to terminate an existing command and the same ABTS loops 5785 * between FW & Driver, then force FW dump. Under 1 jiff, 5786 * we should see multiple loops. 5787 */ 5788 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5789 qpair->retry_term_jiff == jiffies) { 5790 /* found existing exchange */ 5791 qpair->retry_term_cnt++; 5792 if (qpair->retry_term_cnt >= 5) { 5793 rc = -EIO; 5794 qpair->retry_term_cnt = 0; 5795 ql_log(ql_log_warn, vha, 0xffff, 5796 "Unable to send ABTS Respond. Dumping firmware.\n"); 5797 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5798 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5799 5800 if (qpair == ha->base_qpair) 5801 ha->isp_ops->fw_dump(vha); 5802 else 5803 qla2xxx_dump_fw(vha); 5804 5805 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5806 qla2xxx_wake_dpc(vha); 5807 } 5808 } else if (qpair->retry_term_jiff != jiffies) { 5809 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5810 qpair->retry_term_cnt = 0; 5811 qpair->retry_term_jiff = jiffies; 5812 } 5813 5814 return rc; 5815 } 5816 5817 5818 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5819 struct rsp_que *rsp, response_t *pkt) 5820 { 5821 struct abts_resp_from_24xx_fw *entry = 5822 (struct abts_resp_from_24xx_fw *)pkt; 5823 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5824 struct qla_tgt_mgmt_cmd *mcmd; 5825 struct qla_hw_data *ha = vha->hw; 5826 5827 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5828 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5829 ql_dbg(ql_dbg_async, vha, 0xe064, 5830 "qla_target(%d): ABTS Comp without mcmd\n", 5831 vha->vp_idx); 5832 return; 5833 } 5834 5835 if (mcmd) 5836 vha = mcmd->vha; 5837 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5838 5839 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5840 "ABTS_RESP_24XX: compl_status %x\n", 5841 entry->compl_status); 5842 5843 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5844 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5845 le32_to_cpu(entry->error_subcode2) == 0) { 5846 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5847 ha->tgt.tgt_ops->free_mcmd(mcmd); 5848 return; 5849 } 5850 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5851 pkt, mcmd); 5852 } else { 5853 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5854 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5855 vha->vp_idx, entry->compl_status, 5856 entry->error_subcode1, 5857 entry->error_subcode2); 5858 ha->tgt.tgt_ops->free_mcmd(mcmd); 5859 } 5860 } else if (mcmd) { 5861 ha->tgt.tgt_ops->free_mcmd(mcmd); 5862 } 5863 } 5864 5865 /* ha->hardware_lock supposed to be held on entry */ 5866 /* called via callback from qla2xxx */ 5867 static void qlt_response_pkt(struct scsi_qla_host *vha, 5868 struct rsp_que *rsp, response_t *pkt) 5869 { 5870 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5871 5872 if (unlikely(tgt == NULL)) { 5873 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5874 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5875 vha->vp_idx, pkt->entry_type, vha->hw); 5876 return; 5877 } 5878 5879 /* 5880 * In tgt_stop mode we also should allow all requests to pass. 5881 * Otherwise, some commands can stuck. 5882 */ 5883 5884 switch (pkt->entry_type) { 5885 case CTIO_CRC2: 5886 case CTIO_TYPE7: 5887 { 5888 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5889 5890 qlt_do_ctio_completion(vha, rsp, entry->handle, 5891 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5892 entry); 5893 break; 5894 } 5895 5896 case ACCEPT_TGT_IO_TYPE: 5897 { 5898 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5899 int rc; 5900 5901 if (atio->u.isp2x.status != 5902 cpu_to_le16(ATIO_CDB_VALID)) { 5903 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5904 "qla_target(%d): ATIO with error " 5905 "status %x received\n", vha->vp_idx, 5906 le16_to_cpu(atio->u.isp2x.status)); 5907 break; 5908 } 5909 5910 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5911 if (rc != 0) 5912 return; 5913 5914 rc = qlt_handle_cmd_for_atio(vha, atio); 5915 if (unlikely(rc != 0)) { 5916 switch (rc) { 5917 case -ENODEV: 5918 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5919 "qla_target: Unable to send command to target\n"); 5920 break; 5921 case -EBADF: 5922 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5923 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5924 qlt_send_term_exchange(rsp->qpair, NULL, 5925 atio, 1, 0); 5926 break; 5927 case -EBUSY: 5928 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5929 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5930 vha->vp_idx); 5931 qlt_send_busy(rsp->qpair, atio, 5932 tc_sam_status); 5933 break; 5934 default: 5935 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5936 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5937 vha->vp_idx); 5938 qlt_send_busy(rsp->qpair, atio, 5939 qla_sam_status); 5940 break; 5941 } 5942 } 5943 } 5944 break; 5945 5946 case CONTINUE_TGT_IO_TYPE: 5947 { 5948 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5949 5950 qlt_do_ctio_completion(vha, rsp, entry->handle, 5951 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5952 entry); 5953 break; 5954 } 5955 5956 case CTIO_A64_TYPE: 5957 { 5958 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5959 5960 qlt_do_ctio_completion(vha, rsp, entry->handle, 5961 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5962 entry); 5963 break; 5964 } 5965 5966 case IMMED_NOTIFY_TYPE: 5967 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5968 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5969 break; 5970 5971 case NOTIFY_ACK_TYPE: 5972 if (tgt->notify_ack_expected > 0) { 5973 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5974 5975 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5976 "NOTIFY_ACK seq %08x status %x\n", 5977 le16_to_cpu(entry->u.isp2x.seq_id), 5978 le16_to_cpu(entry->u.isp2x.status)); 5979 tgt->notify_ack_expected--; 5980 if (entry->u.isp2x.status != 5981 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5982 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5983 "qla_target(%d): NOTIFY_ACK " 5984 "failed %x\n", vha->vp_idx, 5985 le16_to_cpu(entry->u.isp2x.status)); 5986 } 5987 } else { 5988 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5989 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5990 vha->vp_idx); 5991 } 5992 break; 5993 5994 case ABTS_RECV_24XX: 5995 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5996 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5997 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5998 break; 5999 6000 case ABTS_RESP_24XX: 6001 if (tgt->abts_resp_expected > 0) { 6002 qlt_handle_abts_completion(vha, rsp, pkt); 6003 } else { 6004 ql_dbg(ql_dbg_tgt, vha, 0xe064, 6005 "qla_target(%d): Unexpected ABTS_RESP_24XX " 6006 "received\n", vha->vp_idx); 6007 } 6008 break; 6009 6010 default: 6011 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6012 "qla_target(%d): Received unknown response pkt " 6013 "type %x\n", vha->vp_idx, pkt->entry_type); 6014 break; 6015 } 6016 6017 } 6018 6019 /* 6020 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6021 */ 6022 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6023 uint16_t *mailbox) 6024 { 6025 struct qla_hw_data *ha = vha->hw; 6026 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6027 int login_code; 6028 6029 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6030 return; 6031 6032 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6033 IS_QLA2100(ha)) 6034 return; 6035 /* 6036 * In tgt_stop mode we also should allow all requests to pass. 6037 * Otherwise, some commands can stuck. 6038 */ 6039 6040 6041 switch (code) { 6042 case MBA_RESET: /* Reset */ 6043 case MBA_SYSTEM_ERR: /* System Error */ 6044 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6045 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6047 "qla_target(%d): System error async event %#x " 6048 "occurred", vha->vp_idx, code); 6049 break; 6050 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6051 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6052 break; 6053 6054 case MBA_LOOP_UP: 6055 { 6056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6057 "qla_target(%d): Async LOOP_UP occurred " 6058 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6059 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6060 if (tgt->link_reinit_iocb_pending) { 6061 qlt_send_notify_ack(ha->base_qpair, 6062 &tgt->link_reinit_iocb, 6063 0, 0, 0, 0, 0, 0); 6064 tgt->link_reinit_iocb_pending = 0; 6065 } 6066 break; 6067 } 6068 6069 case MBA_LIP_OCCURRED: 6070 case MBA_LOOP_DOWN: 6071 case MBA_LIP_RESET: 6072 case MBA_RSCN_UPDATE: 6073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6074 "qla_target(%d): Async event %#x occurred " 6075 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6076 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6077 break; 6078 6079 case MBA_REJECTED_FCP_CMD: 6080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6081 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6082 vha->vp_idx, 6083 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6084 6085 if (mailbox[3] == 1) { 6086 /* exchange starvation. */ 6087 vha->hw->exch_starvation++; 6088 if (vha->hw->exch_starvation > 5) { 6089 ql_log(ql_log_warn, vha, 0xd03a, 6090 "Exchange starvation-. Resetting RISC\n"); 6091 6092 vha->hw->exch_starvation = 0; 6093 if (IS_P3P_TYPE(vha->hw)) 6094 set_bit(FCOE_CTX_RESET_NEEDED, 6095 &vha->dpc_flags); 6096 else 6097 set_bit(ISP_ABORT_NEEDED, 6098 &vha->dpc_flags); 6099 qla2xxx_wake_dpc(vha); 6100 } 6101 } 6102 break; 6103 6104 case MBA_PORT_UPDATE: 6105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6106 "qla_target(%d): Port update async event %#x " 6107 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6108 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6109 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6110 6111 login_code = mailbox[2]; 6112 if (login_code == 0x4) { 6113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6114 "Async MB 2: Got PLOGI Complete\n"); 6115 vha->hw->exch_starvation = 0; 6116 } else if (login_code == 0x7) 6117 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6118 "Async MB 2: Port Logged Out\n"); 6119 break; 6120 default: 6121 break; 6122 } 6123 6124 } 6125 6126 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6127 uint16_t loop_id) 6128 { 6129 fc_port_t *fcport, *tfcp, *del; 6130 int rc; 6131 unsigned long flags; 6132 u8 newfcport = 0; 6133 6134 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6135 if (!fcport) { 6136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6137 "qla_target(%d): Allocation of tmp FC port failed", 6138 vha->vp_idx); 6139 return NULL; 6140 } 6141 6142 fcport->loop_id = loop_id; 6143 6144 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6145 if (rc != QLA_SUCCESS) { 6146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6147 "qla_target(%d): Failed to retrieve fcport " 6148 "information -- get_port_database() returned %x " 6149 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6150 kfree(fcport); 6151 return NULL; 6152 } 6153 6154 del = NULL; 6155 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6156 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6157 6158 if (tfcp) { 6159 tfcp->d_id = fcport->d_id; 6160 tfcp->port_type = fcport->port_type; 6161 tfcp->supported_classes = fcport->supported_classes; 6162 tfcp->flags |= fcport->flags; 6163 tfcp->scan_state = QLA_FCPORT_FOUND; 6164 6165 del = fcport; 6166 fcport = tfcp; 6167 } else { 6168 if (vha->hw->current_topology == ISP_CFG_F) 6169 fcport->flags |= FCF_FABRIC_DEVICE; 6170 6171 list_add_tail(&fcport->list, &vha->vp_fcports); 6172 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6173 vha->fcport_count++; 6174 fcport->login_gen++; 6175 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6176 fcport->login_succ = 1; 6177 newfcport = 1; 6178 } 6179 6180 fcport->deleted = 0; 6181 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6182 6183 switch (vha->host->active_mode) { 6184 case MODE_INITIATOR: 6185 case MODE_DUAL: 6186 if (newfcport) { 6187 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6188 qla24xx_sched_upd_fcport(fcport); 6189 } else { 6190 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6191 "%s %d %8phC post gpsc fcp_cnt %d\n", 6192 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6193 qla24xx_post_gpsc_work(vha, fcport); 6194 } 6195 } 6196 break; 6197 6198 case MODE_TARGET: 6199 default: 6200 break; 6201 } 6202 if (del) 6203 qla2x00_free_fcport(del); 6204 6205 return fcport; 6206 } 6207 6208 /* Must be called under tgt_mutex */ 6209 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6210 be_id_t s_id) 6211 { 6212 struct fc_port *sess = NULL; 6213 fc_port_t *fcport = NULL; 6214 int rc, global_resets; 6215 uint16_t loop_id = 0; 6216 6217 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6218 /* 6219 * This is Domain Controller, so it should be 6220 * OK to drop SCSI commands from it. 6221 */ 6222 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6223 "Unable to find initiator with S_ID %x:%x:%x", 6224 s_id.domain, s_id.area, s_id.al_pa); 6225 return NULL; 6226 } 6227 6228 mutex_lock(&vha->vha_tgt.tgt_mutex); 6229 6230 retry: 6231 global_resets = 6232 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6233 6234 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6235 if (rc != 0) { 6236 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6237 6238 ql_log(ql_log_info, vha, 0xf071, 6239 "qla_target(%d): Unable to find " 6240 "initiator with S_ID %x:%x:%x", 6241 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6242 6243 if (rc == -ENOENT) { 6244 qlt_port_logo_t logo; 6245 6246 logo.id = be_to_port_id(s_id); 6247 logo.cmd_count = 1; 6248 qlt_send_first_logo(vha, &logo); 6249 } 6250 6251 return NULL; 6252 } 6253 6254 fcport = qlt_get_port_database(vha, loop_id); 6255 if (!fcport) { 6256 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6257 return NULL; 6258 } 6259 6260 if (global_resets != 6261 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6262 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6263 "qla_target(%d): global reset during session discovery " 6264 "(counter was %d, new %d), retrying", vha->vp_idx, 6265 global_resets, 6266 atomic_read(&vha->vha_tgt. 6267 qla_tgt->tgt_global_resets_count)); 6268 goto retry; 6269 } 6270 6271 sess = qlt_create_sess(vha, fcport, true); 6272 6273 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6274 6275 return sess; 6276 } 6277 6278 static void qlt_abort_work(struct qla_tgt *tgt, 6279 struct qla_tgt_sess_work_param *prm) 6280 { 6281 struct scsi_qla_host *vha = tgt->vha; 6282 struct qla_hw_data *ha = vha->hw; 6283 struct fc_port *sess = NULL; 6284 unsigned long flags = 0, flags2 = 0; 6285 be_id_t s_id; 6286 int rc; 6287 6288 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6289 6290 if (tgt->tgt_stop) 6291 goto out_term2; 6292 6293 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6294 6295 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6296 if (!sess) { 6297 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6298 6299 sess = qlt_make_local_sess(vha, s_id); 6300 /* sess has got an extra creation ref */ 6301 6302 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6303 if (!sess) 6304 goto out_term2; 6305 } else { 6306 if (sess->deleted) { 6307 sess = NULL; 6308 goto out_term2; 6309 } 6310 6311 if (!kref_get_unless_zero(&sess->sess_kref)) { 6312 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6313 "%s: kref_get fail %8phC \n", 6314 __func__, sess->port_name); 6315 sess = NULL; 6316 goto out_term2; 6317 } 6318 } 6319 6320 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6321 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6322 6323 ha->tgt.tgt_ops->put_sess(sess); 6324 6325 if (rc != 0) 6326 goto out_term; 6327 return; 6328 6329 out_term2: 6330 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6331 6332 out_term: 6333 spin_lock_irqsave(&ha->hardware_lock, flags); 6334 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6335 FCP_TMF_REJECTED, false); 6336 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6337 } 6338 6339 static void qlt_sess_work_fn(struct work_struct *work) 6340 { 6341 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6342 struct scsi_qla_host *vha = tgt->vha; 6343 unsigned long flags; 6344 6345 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6346 6347 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6348 while (!list_empty(&tgt->sess_works_list)) { 6349 struct qla_tgt_sess_work_param *prm = list_entry( 6350 tgt->sess_works_list.next, typeof(*prm), 6351 sess_works_list_entry); 6352 6353 /* 6354 * This work can be scheduled on several CPUs at time, so we 6355 * must delete the entry to eliminate double processing 6356 */ 6357 list_del(&prm->sess_works_list_entry); 6358 6359 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6360 6361 switch (prm->type) { 6362 case QLA_TGT_SESS_WORK_ABORT: 6363 qlt_abort_work(tgt, prm); 6364 break; 6365 default: 6366 BUG_ON(1); 6367 break; 6368 } 6369 6370 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6371 6372 kfree(prm); 6373 } 6374 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6375 } 6376 6377 /* Must be called under tgt_host_action_mutex */ 6378 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6379 { 6380 struct qla_tgt *tgt; 6381 int rc, i; 6382 struct qla_qpair_hint *h; 6383 6384 if (!QLA_TGT_MODE_ENABLED()) 6385 return 0; 6386 6387 if (!IS_TGT_MODE_CAPABLE(ha)) { 6388 ql_log(ql_log_warn, base_vha, 0xe070, 6389 "This adapter does not support target mode.\n"); 6390 return 0; 6391 } 6392 6393 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6394 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6395 6396 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6397 6398 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6399 if (!tgt) { 6400 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6401 "Unable to allocate struct qla_tgt\n"); 6402 return -ENOMEM; 6403 } 6404 6405 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6406 sizeof(struct qla_qpair_hint), 6407 GFP_KERNEL); 6408 if (!tgt->qphints) { 6409 kfree(tgt); 6410 ql_log(ql_log_warn, base_vha, 0x0197, 6411 "Unable to allocate qpair hints.\n"); 6412 return -ENOMEM; 6413 } 6414 6415 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6416 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6417 6418 rc = btree_init64(&tgt->lun_qpair_map); 6419 if (rc) { 6420 kfree(tgt->qphints); 6421 kfree(tgt); 6422 ql_log(ql_log_info, base_vha, 0x0198, 6423 "Unable to initialize lun_qpair_map btree\n"); 6424 return -EIO; 6425 } 6426 h = &tgt->qphints[0]; 6427 h->qpair = ha->base_qpair; 6428 INIT_LIST_HEAD(&h->hint_elem); 6429 h->cpuid = ha->base_qpair->cpuid; 6430 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6431 6432 for (i = 0; i < ha->max_qpairs; i++) { 6433 unsigned long flags; 6434 6435 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6436 6437 h = &tgt->qphints[i + 1]; 6438 INIT_LIST_HEAD(&h->hint_elem); 6439 if (qpair) { 6440 h->qpair = qpair; 6441 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6442 list_add_tail(&h->hint_elem, &qpair->hints_list); 6443 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6444 h->cpuid = qpair->cpuid; 6445 } 6446 } 6447 6448 tgt->ha = ha; 6449 tgt->vha = base_vha; 6450 init_waitqueue_head(&tgt->waitQ); 6451 spin_lock_init(&tgt->sess_work_lock); 6452 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6453 INIT_LIST_HEAD(&tgt->sess_works_list); 6454 atomic_set(&tgt->tgt_global_resets_count, 0); 6455 6456 base_vha->vha_tgt.qla_tgt = tgt; 6457 6458 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6459 "qla_target(%d): using 64 Bit PCI addressing", 6460 base_vha->vp_idx); 6461 /* 3 is reserved */ 6462 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6463 6464 mutex_lock(&qla_tgt_mutex); 6465 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6466 mutex_unlock(&qla_tgt_mutex); 6467 6468 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6469 ha->tgt.tgt_ops->add_target(base_vha); 6470 6471 return 0; 6472 } 6473 6474 /* Must be called under tgt_host_action_mutex */ 6475 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6476 { 6477 if (!vha->vha_tgt.qla_tgt) 6478 return 0; 6479 6480 if (vha->fc_vport) { 6481 qlt_release(vha->vha_tgt.qla_tgt); 6482 return 0; 6483 } 6484 6485 /* free left over qfull cmds */ 6486 qlt_init_term_exchange(vha); 6487 6488 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6489 vha->host_no, ha); 6490 qlt_release(vha->vha_tgt.qla_tgt); 6491 6492 return 0; 6493 } 6494 6495 void qla_remove_hostmap(struct qla_hw_data *ha) 6496 { 6497 struct scsi_qla_host *node; 6498 u32 key = 0; 6499 6500 btree_for_each_safe32(&ha->host_map, key, node) 6501 btree_remove32(&ha->host_map, key); 6502 6503 btree_destroy32(&ha->host_map); 6504 } 6505 6506 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6507 unsigned char *b) 6508 { 6509 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6510 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6511 put_unaligned_be64(wwpn, b); 6512 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6513 } 6514 6515 /** 6516 * qlt_lport_register - register lport with external module 6517 * 6518 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6519 * @phys_wwpn: physical port WWPN 6520 * @npiv_wwpn: NPIV WWPN 6521 * @npiv_wwnn: NPIV WWNN 6522 * @callback: lport initialization callback for tcm_qla2xxx code 6523 */ 6524 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6525 u64 npiv_wwpn, u64 npiv_wwnn, 6526 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6527 { 6528 struct qla_tgt *tgt; 6529 struct scsi_qla_host *vha; 6530 struct qla_hw_data *ha; 6531 struct Scsi_Host *host; 6532 unsigned long flags; 6533 int rc; 6534 u8 b[WWN_SIZE]; 6535 6536 mutex_lock(&qla_tgt_mutex); 6537 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6538 vha = tgt->vha; 6539 ha = vha->hw; 6540 6541 host = vha->host; 6542 if (!host) 6543 continue; 6544 6545 if (!(host->hostt->supported_mode & MODE_TARGET)) 6546 continue; 6547 6548 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6549 continue; 6550 6551 spin_lock_irqsave(&ha->hardware_lock, flags); 6552 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6553 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6554 host->host_no); 6555 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6556 continue; 6557 } 6558 if (tgt->tgt_stop) { 6559 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6560 host->host_no); 6561 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6562 continue; 6563 } 6564 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6565 6566 if (!scsi_host_get(host)) { 6567 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6568 "Unable to scsi_host_get() for" 6569 " qla2xxx scsi_host\n"); 6570 continue; 6571 } 6572 qlt_lport_dump(vha, phys_wwpn, b); 6573 6574 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6575 scsi_host_put(host); 6576 continue; 6577 } 6578 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6579 if (rc != 0) 6580 scsi_host_put(host); 6581 6582 mutex_unlock(&qla_tgt_mutex); 6583 return rc; 6584 } 6585 mutex_unlock(&qla_tgt_mutex); 6586 6587 return -ENODEV; 6588 } 6589 EXPORT_SYMBOL(qlt_lport_register); 6590 6591 /** 6592 * qlt_lport_deregister - Degister lport 6593 * 6594 * @vha: Registered scsi_qla_host pointer 6595 */ 6596 void qlt_lport_deregister(struct scsi_qla_host *vha) 6597 { 6598 struct qla_hw_data *ha = vha->hw; 6599 struct Scsi_Host *sh = vha->host; 6600 /* 6601 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6602 */ 6603 vha->vha_tgt.target_lport_ptr = NULL; 6604 ha->tgt.tgt_ops = NULL; 6605 /* 6606 * Release the Scsi_Host reference for the underlying qla2xxx host 6607 */ 6608 scsi_host_put(sh); 6609 } 6610 EXPORT_SYMBOL(qlt_lport_deregister); 6611 6612 /* Must be called under HW lock */ 6613 void qlt_set_mode(struct scsi_qla_host *vha) 6614 { 6615 switch (vha->qlini_mode) { 6616 case QLA2XXX_INI_MODE_DISABLED: 6617 case QLA2XXX_INI_MODE_EXCLUSIVE: 6618 vha->host->active_mode = MODE_TARGET; 6619 break; 6620 case QLA2XXX_INI_MODE_ENABLED: 6621 vha->host->active_mode = MODE_INITIATOR; 6622 break; 6623 case QLA2XXX_INI_MODE_DUAL: 6624 vha->host->active_mode = MODE_DUAL; 6625 break; 6626 default: 6627 break; 6628 } 6629 } 6630 6631 /* Must be called under HW lock */ 6632 static void qlt_clear_mode(struct scsi_qla_host *vha) 6633 { 6634 switch (vha->qlini_mode) { 6635 case QLA2XXX_INI_MODE_DISABLED: 6636 vha->host->active_mode = MODE_UNKNOWN; 6637 break; 6638 case QLA2XXX_INI_MODE_EXCLUSIVE: 6639 vha->host->active_mode = MODE_INITIATOR; 6640 break; 6641 case QLA2XXX_INI_MODE_ENABLED: 6642 case QLA2XXX_INI_MODE_DUAL: 6643 vha->host->active_mode = MODE_INITIATOR; 6644 break; 6645 default: 6646 break; 6647 } 6648 } 6649 6650 /* 6651 * qla_tgt_enable_vha - NO LOCK HELD 6652 * 6653 * host_reset, bring up w/ Target Mode Enabled 6654 */ 6655 void 6656 qlt_enable_vha(struct scsi_qla_host *vha) 6657 { 6658 struct qla_hw_data *ha = vha->hw; 6659 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6660 unsigned long flags; 6661 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6662 6663 if (!tgt) { 6664 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6665 "Unable to locate qla_tgt pointer from" 6666 " struct qla_hw_data\n"); 6667 dump_stack(); 6668 return; 6669 } 6670 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6671 return; 6672 6673 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6674 ha->tgt.num_act_qpairs = ha->max_qpairs; 6675 spin_lock_irqsave(&ha->hardware_lock, flags); 6676 tgt->tgt_stopped = 0; 6677 qlt_set_mode(vha); 6678 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6679 6680 mutex_lock(&ha->optrom_mutex); 6681 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6682 "%s.\n", __func__); 6683 if (vha->vp_idx) { 6684 qla24xx_disable_vp(vha); 6685 qla24xx_enable_vp(vha); 6686 } else { 6687 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6688 qla2xxx_wake_dpc(base_vha); 6689 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6690 QLA_SUCCESS); 6691 } 6692 mutex_unlock(&ha->optrom_mutex); 6693 } 6694 EXPORT_SYMBOL(qlt_enable_vha); 6695 6696 /* 6697 * qla_tgt_disable_vha - NO LOCK HELD 6698 * 6699 * Disable Target Mode and reset the adapter 6700 */ 6701 static void qlt_disable_vha(struct scsi_qla_host *vha) 6702 { 6703 struct qla_hw_data *ha = vha->hw; 6704 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6705 unsigned long flags; 6706 6707 if (!tgt) { 6708 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6709 "Unable to locate qla_tgt pointer from" 6710 " struct qla_hw_data\n"); 6711 dump_stack(); 6712 return; 6713 } 6714 6715 spin_lock_irqsave(&ha->hardware_lock, flags); 6716 qlt_clear_mode(vha); 6717 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6718 6719 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6720 qla2xxx_wake_dpc(vha); 6721 6722 /* 6723 * We are expecting the offline state. 6724 * QLA_FUNCTION_FAILED means that adapter is offline. 6725 */ 6726 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6727 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6728 "adapter is offline\n"); 6729 } 6730 6731 /* 6732 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6733 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6734 * members. 6735 */ 6736 void 6737 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6738 { 6739 vha->vha_tgt.qla_tgt = NULL; 6740 6741 mutex_init(&vha->vha_tgt.tgt_mutex); 6742 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6743 6744 qlt_clear_mode(vha); 6745 6746 /* 6747 * NOTE: Currently the value is kept the same for <24xx and 6748 * >=24xx ISPs. If it is necessary to change it, 6749 * the check should be added for specific ISPs, 6750 * assigning the value appropriately. 6751 */ 6752 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6753 6754 qlt_add_target(ha, vha); 6755 } 6756 6757 u8 6758 qlt_rff_id(struct scsi_qla_host *vha) 6759 { 6760 u8 fc4_feature = 0; 6761 /* 6762 * FC-4 Feature bit 0 indicates target functionality to the name server. 6763 */ 6764 if (qla_tgt_mode_enabled(vha)) { 6765 fc4_feature = BIT_0; 6766 } else if (qla_ini_mode_enabled(vha)) { 6767 fc4_feature = BIT_1; 6768 } else if (qla_dual_mode_enabled(vha)) 6769 fc4_feature = BIT_0 | BIT_1; 6770 6771 return fc4_feature; 6772 } 6773 6774 /* 6775 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6776 * @ha: HA context 6777 * 6778 * Beginning of ATIO ring has initialization control block already built 6779 * by nvram config routine. 6780 * 6781 * Returns 0 on success. 6782 */ 6783 void 6784 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6785 { 6786 struct qla_hw_data *ha = vha->hw; 6787 uint16_t cnt; 6788 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6789 6790 if (qla_ini_mode_enabled(vha)) 6791 return; 6792 6793 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6794 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6795 pkt++; 6796 } 6797 6798 } 6799 6800 /* 6801 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6802 * @ha: SCSI driver HA context 6803 */ 6804 void 6805 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6806 { 6807 struct qla_hw_data *ha = vha->hw; 6808 struct atio_from_isp *pkt; 6809 int cnt, i; 6810 6811 if (!ha->flags.fw_started) 6812 return; 6813 6814 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6815 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6816 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6817 cnt = pkt->u.raw.entry_count; 6818 6819 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6820 /* 6821 * This packet is corrupted. The header + payload 6822 * can not be trusted. There is no point in passing 6823 * it further up. 6824 */ 6825 ql_log(ql_log_warn, vha, 0xd03c, 6826 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6827 &pkt->u.isp24.fcp_hdr.s_id, 6828 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6829 pkt->u.isp24.exchange_addr, pkt); 6830 6831 adjust_corrupted_atio(pkt); 6832 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6833 ha_locked, 0); 6834 } else { 6835 qlt_24xx_atio_pkt_all_vps(vha, 6836 (struct atio_from_isp *)pkt, ha_locked); 6837 } 6838 6839 for (i = 0; i < cnt; i++) { 6840 ha->tgt.atio_ring_index++; 6841 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6842 ha->tgt.atio_ring_index = 0; 6843 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6844 } else 6845 ha->tgt.atio_ring_ptr++; 6846 6847 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6848 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6849 } 6850 wmb(); 6851 } 6852 6853 /* Adjust ring index */ 6854 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6855 } 6856 6857 void 6858 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6859 { 6860 struct qla_hw_data *ha = vha->hw; 6861 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6862 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6863 6864 if (!QLA_TGT_MODE_ENABLED()) 6865 return; 6866 6867 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6868 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6869 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6870 6871 if (ha->flags.msix_enabled) { 6872 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6873 icb->msix_atio = cpu_to_le16(msix->entry); 6874 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6875 ql_dbg(ql_dbg_init, vha, 0xf072, 6876 "Registering ICB vector 0x%x for atio que.\n", 6877 msix->entry); 6878 } 6879 } else { 6880 /* INTx|MSI */ 6881 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6882 icb->msix_atio = 0; 6883 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6884 ql_dbg(ql_dbg_init, vha, 0xf072, 6885 "%s: Use INTx for ATIOQ.\n", __func__); 6886 } 6887 } 6888 } 6889 6890 void 6891 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6892 { 6893 struct qla_hw_data *ha = vha->hw; 6894 u32 tmp; 6895 6896 if (!QLA_TGT_MODE_ENABLED()) 6897 return; 6898 6899 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6900 if (!ha->tgt.saved_set) { 6901 /* We save only once */ 6902 ha->tgt.saved_exchange_count = nv->exchange_count; 6903 ha->tgt.saved_firmware_options_1 = 6904 nv->firmware_options_1; 6905 ha->tgt.saved_firmware_options_2 = 6906 nv->firmware_options_2; 6907 ha->tgt.saved_firmware_options_3 = 6908 nv->firmware_options_3; 6909 ha->tgt.saved_set = 1; 6910 } 6911 6912 if (qla_tgt_mode_enabled(vha)) 6913 nv->exchange_count = cpu_to_le16(0xFFFF); 6914 else /* dual */ 6915 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6916 6917 /* Enable target mode */ 6918 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6919 6920 /* Disable ini mode, if requested */ 6921 if (qla_tgt_mode_enabled(vha)) 6922 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6923 6924 /* Disable Full Login after LIP */ 6925 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6926 /* Enable initial LIP */ 6927 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6928 if (ql2xtgt_tape_enable) 6929 /* Enable FC Tape support */ 6930 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6931 else 6932 /* Disable FC Tape support */ 6933 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6934 6935 /* Disable Full Login after LIP */ 6936 nv->host_p &= cpu_to_le32(~BIT_10); 6937 6938 /* 6939 * clear BIT 15 explicitly as we have seen at least 6940 * a couple of instances where this was set and this 6941 * was causing the firmware to not be initialized. 6942 */ 6943 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6944 /* Enable target PRLI control */ 6945 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6946 6947 if (IS_QLA25XX(ha)) { 6948 /* Change Loop-prefer to Pt-Pt */ 6949 tmp = ~(BIT_4|BIT_5|BIT_6); 6950 nv->firmware_options_2 &= cpu_to_le32(tmp); 6951 tmp = P2P << 4; 6952 nv->firmware_options_2 |= cpu_to_le32(tmp); 6953 } 6954 } else { 6955 if (ha->tgt.saved_set) { 6956 nv->exchange_count = ha->tgt.saved_exchange_count; 6957 nv->firmware_options_1 = 6958 ha->tgt.saved_firmware_options_1; 6959 nv->firmware_options_2 = 6960 ha->tgt.saved_firmware_options_2; 6961 nv->firmware_options_3 = 6962 ha->tgt.saved_firmware_options_3; 6963 } 6964 return; 6965 } 6966 6967 if (ha->base_qpair->enable_class_2) { 6968 if (vha->flags.init_done) 6969 fc_host_supported_classes(vha->host) = 6970 FC_COS_CLASS2 | FC_COS_CLASS3; 6971 6972 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6973 } else { 6974 if (vha->flags.init_done) 6975 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6976 6977 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6978 } 6979 } 6980 6981 void 6982 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6983 struct init_cb_24xx *icb) 6984 { 6985 struct qla_hw_data *ha = vha->hw; 6986 6987 if (!QLA_TGT_MODE_ENABLED()) 6988 return; 6989 6990 if (ha->tgt.node_name_set) { 6991 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6992 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6993 } 6994 } 6995 6996 void 6997 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6998 { 6999 struct qla_hw_data *ha = vha->hw; 7000 u32 tmp; 7001 7002 if (!QLA_TGT_MODE_ENABLED()) 7003 return; 7004 7005 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7006 if (!ha->tgt.saved_set) { 7007 /* We save only once */ 7008 ha->tgt.saved_exchange_count = nv->exchange_count; 7009 ha->tgt.saved_firmware_options_1 = 7010 nv->firmware_options_1; 7011 ha->tgt.saved_firmware_options_2 = 7012 nv->firmware_options_2; 7013 ha->tgt.saved_firmware_options_3 = 7014 nv->firmware_options_3; 7015 ha->tgt.saved_set = 1; 7016 } 7017 7018 if (qla_tgt_mode_enabled(vha)) 7019 nv->exchange_count = cpu_to_le16(0xFFFF); 7020 else /* dual */ 7021 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7022 7023 /* Enable target mode */ 7024 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7025 7026 /* Disable ini mode, if requested */ 7027 if (qla_tgt_mode_enabled(vha)) 7028 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7029 /* Disable Full Login after LIP */ 7030 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7031 /* Enable initial LIP */ 7032 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7033 /* 7034 * clear BIT 15 explicitly as we have seen at 7035 * least a couple of instances where this was set 7036 * and this was causing the firmware to not be 7037 * initialized. 7038 */ 7039 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7040 if (ql2xtgt_tape_enable) 7041 /* Enable FC tape support */ 7042 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7043 else 7044 /* Disable FC tape support */ 7045 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7046 7047 /* Disable Full Login after LIP */ 7048 nv->host_p &= cpu_to_le32(~BIT_10); 7049 /* Enable target PRLI control */ 7050 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7051 7052 /* Change Loop-prefer to Pt-Pt */ 7053 tmp = ~(BIT_4|BIT_5|BIT_6); 7054 nv->firmware_options_2 &= cpu_to_le32(tmp); 7055 tmp = P2P << 4; 7056 nv->firmware_options_2 |= cpu_to_le32(tmp); 7057 } else { 7058 if (ha->tgt.saved_set) { 7059 nv->exchange_count = ha->tgt.saved_exchange_count; 7060 nv->firmware_options_1 = 7061 ha->tgt.saved_firmware_options_1; 7062 nv->firmware_options_2 = 7063 ha->tgt.saved_firmware_options_2; 7064 nv->firmware_options_3 = 7065 ha->tgt.saved_firmware_options_3; 7066 } 7067 return; 7068 } 7069 7070 if (ha->base_qpair->enable_class_2) { 7071 if (vha->flags.init_done) 7072 fc_host_supported_classes(vha->host) = 7073 FC_COS_CLASS2 | FC_COS_CLASS3; 7074 7075 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7076 } else { 7077 if (vha->flags.init_done) 7078 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7079 7080 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7081 } 7082 } 7083 7084 void 7085 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7086 struct init_cb_81xx *icb) 7087 { 7088 struct qla_hw_data *ha = vha->hw; 7089 7090 if (!QLA_TGT_MODE_ENABLED()) 7091 return; 7092 7093 if (ha->tgt.node_name_set) { 7094 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7095 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7096 } 7097 } 7098 7099 void 7100 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7101 { 7102 if (!QLA_TGT_MODE_ENABLED()) 7103 return; 7104 7105 ha->msix_count += 1; /* For ATIO Q */ 7106 } 7107 7108 7109 void 7110 qlt_modify_vp_config(struct scsi_qla_host *vha, 7111 struct vp_config_entry_24xx *vpmod) 7112 { 7113 /* enable target mode. Bit5 = 1 => disable */ 7114 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7115 vpmod->options_idx1 &= ~BIT_5; 7116 7117 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7118 if (qla_tgt_mode_enabled(vha)) 7119 vpmod->options_idx1 &= ~BIT_4; 7120 } 7121 7122 void 7123 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7124 { 7125 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7126 if (!QLA_TGT_MODE_ENABLED()) 7127 return; 7128 7129 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7130 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7131 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7132 } else { 7133 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7134 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7135 } 7136 7137 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7138 7139 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7140 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7141 qlt_unknown_atio_work_fn); 7142 7143 qlt_clear_mode(base_vha); 7144 7145 qlt_update_vp_map(base_vha, SET_VP_IDX); 7146 } 7147 7148 irqreturn_t 7149 qla83xx_msix_atio_q(int irq, void *dev_id) 7150 { 7151 struct rsp_que *rsp; 7152 scsi_qla_host_t *vha; 7153 struct qla_hw_data *ha; 7154 unsigned long flags; 7155 7156 rsp = (struct rsp_que *) dev_id; 7157 ha = rsp->hw; 7158 vha = pci_get_drvdata(ha->pdev); 7159 7160 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7161 7162 qlt_24xx_process_atio_queue(vha, 0); 7163 7164 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7165 7166 return IRQ_HANDLED; 7167 } 7168 7169 static void 7170 qlt_handle_abts_recv_work(struct work_struct *work) 7171 { 7172 struct qla_tgt_sess_op *op = container_of(work, 7173 struct qla_tgt_sess_op, work); 7174 scsi_qla_host_t *vha = op->vha; 7175 struct qla_hw_data *ha = vha->hw; 7176 unsigned long flags; 7177 7178 if (qla2x00_reset_active(vha) || 7179 (op->chip_reset != ha->base_qpair->chip_reset)) 7180 return; 7181 7182 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7183 qlt_24xx_process_atio_queue(vha, 0); 7184 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7185 7186 spin_lock_irqsave(&ha->hardware_lock, flags); 7187 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7188 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7189 7190 kfree(op); 7191 } 7192 7193 void 7194 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7195 response_t *pkt) 7196 { 7197 struct qla_tgt_sess_op *op; 7198 7199 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7200 7201 if (!op) { 7202 /* do not reach for ATIO queue here. This is best effort err 7203 * recovery at this point. 7204 */ 7205 qlt_response_pkt_all_vps(vha, rsp, pkt); 7206 return; 7207 } 7208 7209 memcpy(&op->atio, pkt, sizeof(*pkt)); 7210 op->vha = vha; 7211 op->chip_reset = vha->hw->base_qpair->chip_reset; 7212 op->rsp = rsp; 7213 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7214 queue_work(qla_tgt_wq, &op->work); 7215 return; 7216 } 7217 7218 int 7219 qlt_mem_alloc(struct qla_hw_data *ha) 7220 { 7221 if (!QLA_TGT_MODE_ENABLED()) 7222 return 0; 7223 7224 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7225 sizeof(struct qla_tgt_vp_map), 7226 GFP_KERNEL); 7227 if (!ha->tgt.tgt_vp_map) 7228 return -ENOMEM; 7229 7230 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7231 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7232 &ha->tgt.atio_dma, GFP_KERNEL); 7233 if (!ha->tgt.atio_ring) { 7234 kfree(ha->tgt.tgt_vp_map); 7235 return -ENOMEM; 7236 } 7237 return 0; 7238 } 7239 7240 void 7241 qlt_mem_free(struct qla_hw_data *ha) 7242 { 7243 if (!QLA_TGT_MODE_ENABLED()) 7244 return; 7245 7246 if (ha->tgt.atio_ring) { 7247 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7248 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7249 ha->tgt.atio_dma); 7250 } 7251 ha->tgt.atio_ring = NULL; 7252 ha->tgt.atio_dma = 0; 7253 kfree(ha->tgt.tgt_vp_map); 7254 ha->tgt.tgt_vp_map = NULL; 7255 } 7256 7257 /* vport_slock to be held by the caller */ 7258 void 7259 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7260 { 7261 void *slot; 7262 u32 key; 7263 int rc; 7264 7265 key = vha->d_id.b24; 7266 7267 switch (cmd) { 7268 case SET_VP_IDX: 7269 if (!QLA_TGT_MODE_ENABLED()) 7270 return; 7271 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7272 break; 7273 case SET_AL_PA: 7274 slot = btree_lookup32(&vha->hw->host_map, key); 7275 if (!slot) { 7276 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7277 "Save vha in host_map %p %06x\n", vha, key); 7278 rc = btree_insert32(&vha->hw->host_map, 7279 key, vha, GFP_ATOMIC); 7280 if (rc) 7281 ql_log(ql_log_info, vha, 0xd03e, 7282 "Unable to insert s_id into host_map: %06x\n", 7283 key); 7284 return; 7285 } 7286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7287 "replace existing vha in host_map %p %06x\n", vha, key); 7288 btree_update32(&vha->hw->host_map, key, vha); 7289 break; 7290 case RESET_VP_IDX: 7291 if (!QLA_TGT_MODE_ENABLED()) 7292 return; 7293 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7294 break; 7295 case RESET_AL_PA: 7296 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7297 "clear vha in host_map %p %06x\n", vha, key); 7298 slot = btree_lookup32(&vha->hw->host_map, key); 7299 if (slot) 7300 btree_remove32(&vha->hw->host_map, key); 7301 vha->d_id.b24 = 0; 7302 break; 7303 } 7304 } 7305 7306 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7307 { 7308 7309 if (!vha->d_id.b24) { 7310 vha->d_id = id; 7311 qlt_update_vp_map(vha, SET_AL_PA); 7312 } else if (vha->d_id.b24 != id.b24) { 7313 qlt_update_vp_map(vha, RESET_AL_PA); 7314 vha->d_id = id; 7315 qlt_update_vp_map(vha, SET_AL_PA); 7316 } 7317 } 7318 7319 static int __init qlt_parse_ini_mode(void) 7320 { 7321 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7322 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7323 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7324 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7325 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7326 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7327 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7328 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7329 else 7330 return false; 7331 7332 return true; 7333 } 7334 7335 int __init qlt_init(void) 7336 { 7337 int ret; 7338 7339 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7340 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7341 7342 if (!qlt_parse_ini_mode()) { 7343 ql_log(ql_log_fatal, NULL, 0xe06b, 7344 "qlt_parse_ini_mode() failed\n"); 7345 return -EINVAL; 7346 } 7347 7348 if (!QLA_TGT_MODE_ENABLED()) 7349 return 0; 7350 7351 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7352 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7353 qla_tgt_mgmt_cmd), 0, NULL); 7354 if (!qla_tgt_mgmt_cmd_cachep) { 7355 ql_log(ql_log_fatal, NULL, 0xd04b, 7356 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7357 return -ENOMEM; 7358 } 7359 7360 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7361 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7362 0, NULL); 7363 7364 if (!qla_tgt_plogi_cachep) { 7365 ql_log(ql_log_fatal, NULL, 0xe06d, 7366 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7367 ret = -ENOMEM; 7368 goto out_mgmt_cmd_cachep; 7369 } 7370 7371 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7372 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7373 if (!qla_tgt_mgmt_cmd_mempool) { 7374 ql_log(ql_log_fatal, NULL, 0xe06e, 7375 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7376 ret = -ENOMEM; 7377 goto out_plogi_cachep; 7378 } 7379 7380 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7381 if (!qla_tgt_wq) { 7382 ql_log(ql_log_fatal, NULL, 0xe06f, 7383 "alloc_workqueue for qla_tgt_wq failed\n"); 7384 ret = -ENOMEM; 7385 goto out_cmd_mempool; 7386 } 7387 /* 7388 * Return 1 to signal that initiator-mode is being disabled 7389 */ 7390 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7391 7392 out_cmd_mempool: 7393 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7394 out_plogi_cachep: 7395 kmem_cache_destroy(qla_tgt_plogi_cachep); 7396 out_mgmt_cmd_cachep: 7397 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7398 return ret; 7399 } 7400 7401 void qlt_exit(void) 7402 { 7403 if (!QLA_TGT_MODE_ENABLED()) 7404 return; 7405 7406 destroy_workqueue(qla_tgt_wq); 7407 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7408 kmem_cache_destroy(qla_tgt_plogi_cachep); 7409 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7410 } 7411