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 if (ha->flags.edif_enabled && 985 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 986 sess->edif.authok = 0; 987 if (!ha->flags.host_shutting_down) { 988 ql_dbg(ql_dbg_edif, vha, 0x911e, 989 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 990 __func__, sess->port_name); 991 qla2x00_release_all_sadb(vha, sess); 992 } else { 993 ql_dbg(ql_dbg_edif, vha, 0x911e, 994 "%s bypassing release_all_sadb\n", 995 __func__); 996 } 997 qla_edif_clear_appdata(vha, sess); 998 qla_edif_sess_down(vha, sess); 999 } 1000 qla2x00_mark_device_lost(vha, sess, 0); 1001 1002 if (sess->send_els_logo) { 1003 qlt_port_logo_t logo; 1004 1005 logo.id = sess->d_id; 1006 logo.cmd_count = 0; 1007 INIT_LIST_HEAD(&logo.list); 1008 if (!own) 1009 qlt_send_first_logo(vha, &logo); 1010 sess->send_els_logo = 0; 1011 } 1012 1013 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 1014 int rc; 1015 1016 if (!own || 1017 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1018 sess->logout_completed = 0; 1019 rc = qla2x00_post_async_logout_work(vha, sess, 1020 NULL); 1021 if (rc != QLA_SUCCESS) 1022 ql_log(ql_log_warn, vha, 0xf085, 1023 "Schedule logo failed sess %p rc %d\n", 1024 sess, rc); 1025 else 1026 logout_started = true; 1027 } else if (own && (own->iocb.u.isp24.status_subcode == 1028 ELS_PRLI) && ha->flags.rida_fmt2) { 1029 rc = qla2x00_post_async_prlo_work(vha, sess, 1030 NULL); 1031 if (rc != QLA_SUCCESS) 1032 ql_log(ql_log_warn, vha, 0xf085, 1033 "Schedule PRLO failed sess %p rc %d\n", 1034 sess, rc); 1035 else 1036 logout_started = true; 1037 } 1038 } /* if sess->logout_on_delete */ 1039 1040 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1041 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1042 sess->nvme_flag |= NVME_FLAG_DELETING; 1043 qla_nvme_unregister_remote_port(sess); 1044 } 1045 } 1046 1047 /* 1048 * Release the target session for FC Nexus from fabric module code. 1049 */ 1050 if (sess->se_sess != NULL) 1051 ha->tgt.tgt_ops->free_session(sess); 1052 1053 if (logout_started) { 1054 bool traced = false; 1055 u16 cnt = 0; 1056 1057 while (!READ_ONCE(sess->logout_completed)) { 1058 if (!traced) { 1059 ql_dbg(ql_dbg_disc, vha, 0xf086, 1060 "%s: waiting for sess %p logout\n", 1061 __func__, sess); 1062 traced = true; 1063 } 1064 msleep(100); 1065 cnt++; 1066 /* 1067 * Driver timeout is set to 22 Sec, update count value to loop 1068 * long enough for log-out to complete before advancing. Otherwise, 1069 * straddling logout can interfere with re-login attempt. 1070 */ 1071 if (cnt > 230) 1072 break; 1073 } 1074 1075 ql_dbg(ql_dbg_disc, vha, 0xf087, 1076 "%s: sess %p logout completed\n", __func__, sess); 1077 } 1078 1079 if (sess->logo_ack_needed) { 1080 sess->logo_ack_needed = 0; 1081 qla24xx_async_notify_ack(vha, sess, 1082 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1083 } 1084 1085 spin_lock_irqsave(&vha->work_lock, flags); 1086 sess->flags &= ~FCF_ASYNC_SENT; 1087 spin_unlock_irqrestore(&vha->work_lock, flags); 1088 1089 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1090 if (sess->se_sess) { 1091 sess->se_sess = NULL; 1092 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1093 tgt->sess_count--; 1094 } 1095 1096 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1097 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1098 sess->deleted = QLA_SESS_DELETED; 1099 1100 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1101 vha->fcport_count--; 1102 sess->login_succ = 0; 1103 } 1104 1105 qla2x00_clear_loop_id(sess); 1106 1107 if (sess->conflict) { 1108 sess->conflict->login_pause = 0; 1109 sess->conflict = NULL; 1110 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1111 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1112 } 1113 1114 { 1115 struct qlt_plogi_ack_t *con = 1116 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1117 struct imm_ntfy_from_isp *iocb; 1118 1119 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1120 1121 if (con) { 1122 iocb = &con->iocb; 1123 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1124 "se_sess %p / sess %p port %8phC is gone," 1125 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1126 sess->se_sess, sess, sess->port_name, 1127 own ? "releasing own PLOGI" : "no own PLOGI pending", 1128 own ? own->ref_count : -1, 1129 iocb->u.isp24.port_name, con->ref_count); 1130 qlt_plogi_ack_unref(vha, con); 1131 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1132 } else { 1133 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1134 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1135 sess->se_sess, sess, sess->port_name, 1136 own ? "releasing own PLOGI" : 1137 "no own PLOGI pending", 1138 own ? own->ref_count : -1); 1139 } 1140 1141 if (own) { 1142 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1143 qlt_plogi_ack_unref(vha, own); 1144 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1145 } 1146 } 1147 1148 sess->explicit_logout = 0; 1149 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1150 sess->free_pending = 0; 1151 1152 qla2x00_dfs_remove_rport(vha, sess); 1153 1154 ql_dbg(ql_dbg_disc, vha, 0xf001, 1155 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1156 sess, sess->port_name, vha->fcport_count); 1157 1158 if (tgt && (tgt->sess_count == 0)) 1159 wake_up_all(&tgt->waitQ); 1160 1161 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1162 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1163 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1164 switch (vha->host->active_mode) { 1165 case MODE_INITIATOR: 1166 case MODE_DUAL: 1167 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1168 qla2xxx_wake_dpc(vha); 1169 break; 1170 case MODE_TARGET: 1171 default: 1172 /* no-op */ 1173 break; 1174 } 1175 } 1176 1177 if (vha->fcport_count == 0) 1178 wake_up_all(&vha->fcport_waitQ); 1179 } 1180 1181 /* ha->tgt.sess_lock supposed to be held on entry */ 1182 void qlt_unreg_sess(struct fc_port *sess) 1183 { 1184 struct scsi_qla_host *vha = sess->vha; 1185 unsigned long flags; 1186 1187 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1188 "%s sess %p for deletion %8phC\n", 1189 __func__, sess, sess->port_name); 1190 1191 spin_lock_irqsave(&sess->vha->work_lock, flags); 1192 if (sess->free_pending) { 1193 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1194 return; 1195 } 1196 sess->free_pending = 1; 1197 /* 1198 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1199 * management from being sent. 1200 */ 1201 sess->flags |= FCF_ASYNC_SENT; 1202 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1203 1204 if (sess->se_sess) 1205 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1206 1207 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1208 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1209 sess->last_rscn_gen = sess->rscn_gen; 1210 sess->last_login_gen = sess->login_gen; 1211 1212 queue_work(sess->vha->hw->wq, &sess->free_work); 1213 } 1214 EXPORT_SYMBOL(qlt_unreg_sess); 1215 1216 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1217 { 1218 struct qla_hw_data *ha = vha->hw; 1219 struct fc_port *sess = NULL; 1220 uint16_t loop_id; 1221 int res = 0; 1222 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1223 unsigned long flags; 1224 1225 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1226 if (loop_id == 0xFFFF) { 1227 /* Global event */ 1228 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1229 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1230 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1232 } else { 1233 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1234 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1235 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1236 } 1237 1238 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1239 "Using sess for qla_tgt_reset: %p\n", sess); 1240 if (!sess) { 1241 res = -ESRCH; 1242 return res; 1243 } 1244 1245 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1246 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1247 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1248 mcmd, loop_id); 1249 1250 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1251 } 1252 1253 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1254 { 1255 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1256 sess->logout_on_delete = 0; 1257 sess->logo_ack_needed = 0; 1258 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1259 } 1260 } 1261 1262 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1263 { 1264 struct qla_tgt *tgt = sess->tgt; 1265 unsigned long flags; 1266 u16 sec; 1267 1268 switch (sess->disc_state) { 1269 case DSC_DELETE_PEND: 1270 return; 1271 case DSC_DELETED: 1272 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1273 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1274 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1275 wake_up_all(&tgt->waitQ); 1276 1277 if (sess->vha->fcport_count == 0) 1278 wake_up_all(&sess->vha->fcport_waitQ); 1279 return; 1280 } 1281 break; 1282 case DSC_UPD_FCPORT: 1283 /* 1284 * This port is not done reporting to upper layer. 1285 * let it finish 1286 */ 1287 sess->next_disc_state = DSC_DELETE_PEND; 1288 sec = jiffies_to_msecs(jiffies - 1289 sess->jiffies_at_registration)/1000; 1290 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1291 sess->sec_since_registration = sec; 1292 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1293 "%s %8phC : Slow Rport registration(%d Sec)\n", 1294 __func__, sess->port_name, sec); 1295 } 1296 return; 1297 default: 1298 break; 1299 } 1300 1301 spin_lock_irqsave(&sess->vha->work_lock, flags); 1302 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1303 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1304 return; 1305 } 1306 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1307 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1308 1309 sess->prli_pend_timer = 0; 1310 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1311 1312 qla24xx_chk_fcp_state(sess); 1313 1314 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1315 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1316 sess, sess->port_name, sess->fc4_type); 1317 1318 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1319 } 1320 1321 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1322 { 1323 struct fc_port *sess; 1324 scsi_qla_host_t *vha = tgt->vha; 1325 1326 list_for_each_entry(sess, &vha->vp_fcports, list) { 1327 if (sess->se_sess) 1328 qlt_schedule_sess_for_deletion(sess); 1329 } 1330 1331 /* At this point tgt could be already dead */ 1332 } 1333 1334 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1335 uint16_t *loop_id) 1336 { 1337 struct qla_hw_data *ha = vha->hw; 1338 dma_addr_t gid_list_dma; 1339 struct gid_list_info *gid_list, *gid; 1340 int res, rc, i; 1341 uint16_t entries; 1342 1343 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1344 &gid_list_dma, GFP_KERNEL); 1345 if (!gid_list) { 1346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1347 "qla_target(%d): DMA Alloc failed of %u\n", 1348 vha->vp_idx, qla2x00_gid_list_size(ha)); 1349 return -ENOMEM; 1350 } 1351 1352 /* Get list of logged in devices */ 1353 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1354 if (rc != QLA_SUCCESS) { 1355 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1356 "qla_target(%d): get_id_list() failed: %x\n", 1357 vha->vp_idx, rc); 1358 res = -EBUSY; 1359 goto out_free_id_list; 1360 } 1361 1362 gid = gid_list; 1363 res = -ENOENT; 1364 for (i = 0; i < entries; i++) { 1365 if (gid->al_pa == s_id.al_pa && 1366 gid->area == s_id.area && 1367 gid->domain == s_id.domain) { 1368 *loop_id = le16_to_cpu(gid->loop_id); 1369 res = 0; 1370 break; 1371 } 1372 gid = (void *)gid + ha->gid_list_info_size; 1373 } 1374 1375 out_free_id_list: 1376 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1377 gid_list, gid_list_dma); 1378 return res; 1379 } 1380 1381 /* 1382 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1383 * Caller must put it. 1384 */ 1385 static struct fc_port *qlt_create_sess( 1386 struct scsi_qla_host *vha, 1387 fc_port_t *fcport, 1388 bool local) 1389 { 1390 struct qla_hw_data *ha = vha->hw; 1391 struct fc_port *sess = fcport; 1392 unsigned long flags; 1393 1394 if (vha->vha_tgt.qla_tgt->tgt_stop) 1395 return NULL; 1396 1397 if (fcport->se_sess) { 1398 if (!kref_get_unless_zero(&sess->sess_kref)) { 1399 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1400 "%s: kref_get_unless_zero failed for %8phC\n", 1401 __func__, sess->port_name); 1402 return NULL; 1403 } 1404 return fcport; 1405 } 1406 sess->tgt = vha->vha_tgt.qla_tgt; 1407 sess->local = local; 1408 1409 /* 1410 * Under normal circumstances we want to logout from firmware when 1411 * session eventually ends and release corresponding nport handle. 1412 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1413 * code will adjust these flags as necessary. 1414 */ 1415 sess->logout_on_delete = 1; 1416 sess->keep_nport_handle = 0; 1417 sess->logout_completed = 0; 1418 1419 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1420 &fcport->port_name[0], sess) < 0) { 1421 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1422 "(%d) %8phC check_initiator_node_acl failed\n", 1423 vha->vp_idx, fcport->port_name); 1424 return NULL; 1425 } else { 1426 kref_init(&fcport->sess_kref); 1427 /* 1428 * Take an extra reference to ->sess_kref here to handle 1429 * fc_port access across ->tgt.sess_lock reaquire. 1430 */ 1431 if (!kref_get_unless_zero(&sess->sess_kref)) { 1432 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1433 "%s: kref_get_unless_zero failed for %8phC\n", 1434 __func__, sess->port_name); 1435 return NULL; 1436 } 1437 1438 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1439 if (!IS_SW_RESV_ADDR(sess->d_id)) 1440 vha->vha_tgt.qla_tgt->sess_count++; 1441 1442 qlt_do_generation_tick(vha, &sess->generation); 1443 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1444 } 1445 1446 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1447 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1448 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1449 vha->vha_tgt.qla_tgt->sess_count); 1450 1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1452 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1453 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1454 vha->vp_idx, local ? "local " : "", fcport->port_name, 1455 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1456 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1457 1458 return sess; 1459 } 1460 1461 /* 1462 * max_gen - specifies maximum session generation 1463 * at which this deletion requestion is still valid 1464 */ 1465 void 1466 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1467 { 1468 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1469 struct fc_port *sess = fcport; 1470 unsigned long flags; 1471 1472 if (!vha->hw->tgt.tgt_ops) 1473 return; 1474 1475 if (!tgt) 1476 return; 1477 1478 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1479 if (tgt->tgt_stop) { 1480 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1481 return; 1482 } 1483 if (!sess->se_sess) { 1484 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1485 return; 1486 } 1487 1488 if (max_gen - sess->generation < 0) { 1489 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1491 "Ignoring stale deletion request for se_sess %p / sess %p" 1492 " for port %8phC, req_gen %d, sess_gen %d\n", 1493 sess->se_sess, sess, sess->port_name, max_gen, 1494 sess->generation); 1495 return; 1496 } 1497 1498 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1499 1500 sess->local = 1; 1501 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1502 qlt_schedule_sess_for_deletion(sess); 1503 } 1504 1505 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1506 { 1507 struct qla_hw_data *ha = tgt->ha; 1508 unsigned long flags; 1509 int res; 1510 /* 1511 * We need to protect against race, when tgt is freed before or 1512 * inside wake_up() 1513 */ 1514 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1515 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1516 "tgt %p, sess_count=%d\n", 1517 tgt, tgt->sess_count); 1518 res = (tgt->sess_count == 0); 1519 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1520 1521 return res; 1522 } 1523 1524 /* Called by tcm_qla2xxx configfs code */ 1525 int qlt_stop_phase1(struct qla_tgt *tgt) 1526 { 1527 struct scsi_qla_host *vha = tgt->vha; 1528 struct qla_hw_data *ha = tgt->ha; 1529 unsigned long flags; 1530 1531 mutex_lock(&ha->optrom_mutex); 1532 mutex_lock(&qla_tgt_mutex); 1533 1534 if (tgt->tgt_stop || tgt->tgt_stopped) { 1535 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1536 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1537 mutex_unlock(&qla_tgt_mutex); 1538 mutex_unlock(&ha->optrom_mutex); 1539 return -EPERM; 1540 } 1541 1542 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1543 vha->host_no, vha); 1544 /* 1545 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1546 * Lock is needed, because we still can get an incoming packet. 1547 */ 1548 mutex_lock(&vha->vha_tgt.tgt_mutex); 1549 tgt->tgt_stop = 1; 1550 qlt_clear_tgt_db(tgt); 1551 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1552 mutex_unlock(&qla_tgt_mutex); 1553 1554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1555 "Waiting for sess works (tgt %p)", tgt); 1556 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1557 while (!list_empty(&tgt->sess_works_list)) { 1558 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1559 flush_scheduled_work(); 1560 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1561 } 1562 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1563 1564 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1565 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1566 1567 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1568 1569 /* Big hammer */ 1570 if (!ha->flags.host_shutting_down && 1571 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1572 qlt_disable_vha(vha); 1573 1574 /* Wait for sessions to clear out (just in case) */ 1575 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1576 mutex_unlock(&ha->optrom_mutex); 1577 1578 return 0; 1579 } 1580 EXPORT_SYMBOL(qlt_stop_phase1); 1581 1582 /* Called by tcm_qla2xxx configfs code */ 1583 void qlt_stop_phase2(struct qla_tgt *tgt) 1584 { 1585 scsi_qla_host_t *vha = tgt->vha; 1586 1587 if (tgt->tgt_stopped) { 1588 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1589 "Already in tgt->tgt_stopped state\n"); 1590 dump_stack(); 1591 return; 1592 } 1593 if (!tgt->tgt_stop) { 1594 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1595 "%s: phase1 stop is not completed\n", __func__); 1596 dump_stack(); 1597 return; 1598 } 1599 1600 mutex_lock(&tgt->ha->optrom_mutex); 1601 mutex_lock(&vha->vha_tgt.tgt_mutex); 1602 tgt->tgt_stop = 0; 1603 tgt->tgt_stopped = 1; 1604 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1605 mutex_unlock(&tgt->ha->optrom_mutex); 1606 1607 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1608 tgt); 1609 1610 switch (vha->qlini_mode) { 1611 case QLA2XXX_INI_MODE_EXCLUSIVE: 1612 vha->flags.online = 1; 1613 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1614 break; 1615 default: 1616 break; 1617 } 1618 } 1619 EXPORT_SYMBOL(qlt_stop_phase2); 1620 1621 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1622 static void qlt_release(struct qla_tgt *tgt) 1623 { 1624 scsi_qla_host_t *vha = tgt->vha; 1625 void *node; 1626 u64 key = 0; 1627 u16 i; 1628 struct qla_qpair_hint *h; 1629 struct qla_hw_data *ha = vha->hw; 1630 1631 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1632 qlt_stop_phase1(tgt); 1633 1634 if (!tgt->tgt_stopped) 1635 qlt_stop_phase2(tgt); 1636 1637 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1638 unsigned long flags; 1639 1640 h = &tgt->qphints[i]; 1641 if (h->qpair) { 1642 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1643 list_del(&h->hint_elem); 1644 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1645 h->qpair = NULL; 1646 } 1647 } 1648 kfree(tgt->qphints); 1649 mutex_lock(&qla_tgt_mutex); 1650 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1651 mutex_unlock(&qla_tgt_mutex); 1652 1653 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1654 btree_remove64(&tgt->lun_qpair_map, key); 1655 1656 btree_destroy64(&tgt->lun_qpair_map); 1657 1658 if (vha->vp_idx) 1659 if (ha->tgt.tgt_ops && 1660 ha->tgt.tgt_ops->remove_target && 1661 vha->vha_tgt.target_lport_ptr) 1662 ha->tgt.tgt_ops->remove_target(vha); 1663 1664 vha->vha_tgt.qla_tgt = NULL; 1665 1666 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1667 "Release of tgt %p finished\n", tgt); 1668 1669 kfree(tgt); 1670 } 1671 1672 /* ha->hardware_lock supposed to be held on entry */ 1673 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1674 const void *param, unsigned int param_size) 1675 { 1676 struct qla_tgt_sess_work_param *prm; 1677 unsigned long flags; 1678 1679 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1680 if (!prm) { 1681 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1682 "qla_target(%d): Unable to create session " 1683 "work, command will be refused", 0); 1684 return -ENOMEM; 1685 } 1686 1687 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1688 "Scheduling work (type %d, prm %p)" 1689 " to find session for param %p (size %d, tgt %p)\n", 1690 type, prm, param, param_size, tgt); 1691 1692 prm->type = type; 1693 memcpy(&prm->tm_iocb, param, param_size); 1694 1695 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1696 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1697 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1698 1699 schedule_work(&tgt->sess_work); 1700 1701 return 0; 1702 } 1703 1704 /* 1705 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1706 */ 1707 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1708 struct imm_ntfy_from_isp *ntfy, 1709 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1710 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1711 { 1712 struct scsi_qla_host *vha = qpair->vha; 1713 struct qla_hw_data *ha = vha->hw; 1714 request_t *pkt; 1715 struct nack_to_isp *nack; 1716 1717 if (!ha->flags.fw_started) 1718 return; 1719 1720 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1721 1722 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1723 if (!pkt) { 1724 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1725 "qla_target(%d): %s failed: unable to allocate " 1726 "request packet\n", vha->vp_idx, __func__); 1727 return; 1728 } 1729 1730 if (vha->vha_tgt.qla_tgt != NULL) 1731 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1732 1733 pkt->entry_type = NOTIFY_ACK_TYPE; 1734 pkt->entry_count = 1; 1735 1736 nack = (struct nack_to_isp *)pkt; 1737 nack->ox_id = ntfy->ox_id; 1738 1739 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1740 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1741 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1742 nack->u.isp24.flags = ntfy->u.isp24.flags & 1743 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1744 } 1745 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1746 nack->u.isp24.status = ntfy->u.isp24.status; 1747 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1748 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1749 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1750 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1751 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1752 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1753 nack->u.isp24.srr_reject_code = srr_reject_code; 1754 nack->u.isp24.srr_reject_code_expl = srr_explan; 1755 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1756 1757 /* TODO qualify this with EDIF enable */ 1758 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1759 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1760 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1761 } 1762 1763 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1764 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1765 vha->vp_idx, nack->u.isp24.status); 1766 1767 /* Memory Barrier */ 1768 wmb(); 1769 qla2x00_start_iocbs(vha, qpair->req); 1770 } 1771 1772 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1773 { 1774 struct scsi_qla_host *vha = mcmd->vha; 1775 struct qla_hw_data *ha = vha->hw; 1776 struct abts_resp_to_24xx *resp; 1777 __le32 f_ctl; 1778 uint32_t h; 1779 uint8_t *p; 1780 int rc; 1781 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1782 struct qla_qpair *qpair = mcmd->qpair; 1783 1784 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1785 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1786 ha, mcmd->fc_tm_rsp); 1787 1788 rc = qlt_check_reserve_free_req(qpair, 1); 1789 if (rc) { 1790 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1791 "qla_target(%d): %s failed: unable to allocate request packet\n", 1792 vha->vp_idx, __func__); 1793 return -EAGAIN; 1794 } 1795 1796 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1797 memset(resp, 0, sizeof(*resp)); 1798 1799 h = qlt_make_handle(qpair); 1800 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1801 /* 1802 * CTIO type 7 from the firmware doesn't provide a way to 1803 * know the initiator's LOOP ID, hence we can't find 1804 * the session and, so, the command. 1805 */ 1806 return -EAGAIN; 1807 } else { 1808 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1809 } 1810 1811 resp->handle = make_handle(qpair->req->id, h); 1812 resp->entry_type = ABTS_RESP_24XX; 1813 resp->entry_count = 1; 1814 resp->nport_handle = abts->nport_handle; 1815 resp->vp_index = vha->vp_idx; 1816 resp->sof_type = abts->sof_type; 1817 resp->exchange_address = abts->exchange_address; 1818 resp->fcp_hdr_le = abts->fcp_hdr_le; 1819 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1820 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1821 F_CTL_SEQ_INITIATIVE); 1822 p = (uint8_t *)&f_ctl; 1823 resp->fcp_hdr_le.f_ctl[0] = *p++; 1824 resp->fcp_hdr_le.f_ctl[1] = *p++; 1825 resp->fcp_hdr_le.f_ctl[2] = *p; 1826 1827 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1828 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1829 1830 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1831 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1832 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1833 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1834 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1835 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1836 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1837 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1838 } else { 1839 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1840 resp->payload.ba_rjt.reason_code = 1841 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1842 /* Other bytes are zero */ 1843 } 1844 1845 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1846 1847 /* Memory Barrier */ 1848 wmb(); 1849 if (qpair->reqq_start_iocbs) 1850 qpair->reqq_start_iocbs(qpair); 1851 else 1852 qla2x00_start_iocbs(vha, qpair->req); 1853 1854 return rc; 1855 } 1856 1857 /* 1858 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1859 */ 1860 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1861 struct abts_recv_from_24xx *abts, uint32_t status, 1862 bool ids_reversed) 1863 { 1864 struct scsi_qla_host *vha = qpair->vha; 1865 struct qla_hw_data *ha = vha->hw; 1866 struct abts_resp_to_24xx *resp; 1867 __le32 f_ctl; 1868 uint8_t *p; 1869 1870 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1871 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1872 ha, abts, status); 1873 1874 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1875 NULL); 1876 if (!resp) { 1877 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1878 "qla_target(%d): %s failed: unable to allocate " 1879 "request packet", vha->vp_idx, __func__); 1880 return; 1881 } 1882 1883 resp->entry_type = ABTS_RESP_24XX; 1884 resp->handle = QLA_TGT_SKIP_HANDLE; 1885 resp->entry_count = 1; 1886 resp->nport_handle = abts->nport_handle; 1887 resp->vp_index = vha->vp_idx; 1888 resp->sof_type = abts->sof_type; 1889 resp->exchange_address = abts->exchange_address; 1890 resp->fcp_hdr_le = abts->fcp_hdr_le; 1891 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1892 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1893 F_CTL_SEQ_INITIATIVE); 1894 p = (uint8_t *)&f_ctl; 1895 resp->fcp_hdr_le.f_ctl[0] = *p++; 1896 resp->fcp_hdr_le.f_ctl[1] = *p++; 1897 resp->fcp_hdr_le.f_ctl[2] = *p; 1898 if (ids_reversed) { 1899 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1900 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1901 } else { 1902 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1903 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1904 } 1905 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1906 if (status == FCP_TMF_CMPL) { 1907 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1908 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1909 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1910 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1911 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1912 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1913 } else { 1914 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1915 resp->payload.ba_rjt.reason_code = 1916 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1917 /* Other bytes are zero */ 1918 } 1919 1920 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1921 1922 /* Memory Barrier */ 1923 wmb(); 1924 if (qpair->reqq_start_iocbs) 1925 qpair->reqq_start_iocbs(qpair); 1926 else 1927 qla2x00_start_iocbs(vha, qpair->req); 1928 } 1929 1930 /* 1931 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1932 */ 1933 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1934 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1935 { 1936 struct ctio7_to_24xx *ctio; 1937 u16 tmp; 1938 struct abts_recv_from_24xx *entry; 1939 1940 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1941 if (ctio == NULL) { 1942 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1943 "qla_target(%d): %s failed: unable to allocate " 1944 "request packet\n", vha->vp_idx, __func__); 1945 return; 1946 } 1947 1948 if (mcmd) 1949 /* abts from remote port */ 1950 entry = &mcmd->orig_iocb.abts; 1951 else 1952 /* abts from this driver. */ 1953 entry = (struct abts_recv_from_24xx *)pkt; 1954 1955 /* 1956 * We've got on entrance firmware's response on by us generated 1957 * ABTS response. So, in it ID fields are reversed. 1958 */ 1959 1960 ctio->entry_type = CTIO_TYPE7; 1961 ctio->entry_count = 1; 1962 ctio->nport_handle = entry->nport_handle; 1963 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1964 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1965 ctio->vp_index = vha->vp_idx; 1966 ctio->exchange_addr = entry->exchange_addr_to_abort; 1967 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1968 1969 if (mcmd) { 1970 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1971 1972 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1973 tmp |= (mcmd->abort_io_attr << 9); 1974 else if (qpair->retry_term_cnt & 1) 1975 tmp |= (0x4 << 9); 1976 } else { 1977 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1978 1979 if (qpair->retry_term_cnt & 1) 1980 tmp |= (0x4 << 9); 1981 } 1982 ctio->u.status1.flags = cpu_to_le16(tmp); 1983 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1984 1985 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1986 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1987 le16_to_cpu(ctio->u.status1.flags), 1988 le16_to_cpu(ctio->u.status1.ox_id), 1989 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1990 1991 /* Memory Barrier */ 1992 wmb(); 1993 if (qpair->reqq_start_iocbs) 1994 qpair->reqq_start_iocbs(qpair); 1995 else 1996 qla2x00_start_iocbs(vha, qpair->req); 1997 1998 if (mcmd) 1999 qlt_build_abts_resp_iocb(mcmd); 2000 else 2001 qlt_24xx_send_abts_resp(qpair, 2002 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2003 2004 } 2005 2006 /* drop cmds for the given lun 2007 * XXX only looks for cmds on the port through which lun reset was recieved 2008 * XXX does not go through the list of other port (which may have cmds 2009 * for the same lun) 2010 */ 2011 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2012 { 2013 struct qla_tgt_sess_op *op; 2014 struct qla_tgt_cmd *cmd; 2015 uint32_t key; 2016 unsigned long flags; 2017 2018 key = sid_to_key(s_id); 2019 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2020 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2021 uint32_t op_key; 2022 u64 op_lun; 2023 2024 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2025 op_lun = scsilun_to_int( 2026 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2027 if (op_key == key && op_lun == lun) 2028 op->aborted = true; 2029 } 2030 2031 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2032 uint32_t cmd_key; 2033 u64 cmd_lun; 2034 2035 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2036 cmd_lun = scsilun_to_int( 2037 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2038 if (cmd_key == key && cmd_lun == lun) 2039 cmd->aborted = 1; 2040 } 2041 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2042 } 2043 2044 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2045 uint64_t unpacked_lun) 2046 { 2047 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2048 struct qla_qpair_hint *h = NULL; 2049 2050 if (vha->flags.qpairs_available) { 2051 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2052 if (!h) 2053 h = &tgt->qphints[0]; 2054 } else { 2055 h = &tgt->qphints[0]; 2056 } 2057 2058 return h; 2059 } 2060 2061 static void qlt_do_tmr_work(struct work_struct *work) 2062 { 2063 struct qla_tgt_mgmt_cmd *mcmd = 2064 container_of(work, struct qla_tgt_mgmt_cmd, work); 2065 struct qla_hw_data *ha = mcmd->vha->hw; 2066 int rc; 2067 uint32_t tag; 2068 unsigned long flags; 2069 2070 switch (mcmd->tmr_func) { 2071 case QLA_TGT_ABTS: 2072 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2073 break; 2074 default: 2075 tag = 0; 2076 break; 2077 } 2078 2079 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2080 mcmd->tmr_func, tag); 2081 2082 if (rc != 0) { 2083 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2084 switch (mcmd->tmr_func) { 2085 case QLA_TGT_ABTS: 2086 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2087 qlt_build_abts_resp_iocb(mcmd); 2088 break; 2089 case QLA_TGT_LUN_RESET: 2090 case QLA_TGT_CLEAR_TS: 2091 case QLA_TGT_ABORT_TS: 2092 case QLA_TGT_CLEAR_ACA: 2093 case QLA_TGT_TARGET_RESET: 2094 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2095 qla_sam_status); 2096 break; 2097 2098 case QLA_TGT_ABORT_ALL: 2099 case QLA_TGT_NEXUS_LOSS_SESS: 2100 case QLA_TGT_NEXUS_LOSS: 2101 qlt_send_notify_ack(mcmd->qpair, 2102 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2103 break; 2104 } 2105 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2106 2107 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2108 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2109 mcmd->vha->vp_idx, rc); 2110 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2111 } 2112 } 2113 2114 /* ha->hardware_lock supposed to be held on entry */ 2115 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2116 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2117 { 2118 struct qla_hw_data *ha = vha->hw; 2119 struct qla_tgt_mgmt_cmd *mcmd; 2120 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2121 struct qla_tgt_cmd *abort_cmd; 2122 2123 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2124 "qla_target(%d): task abort (tag=%d)\n", 2125 vha->vp_idx, abts->exchange_addr_to_abort); 2126 2127 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2128 if (mcmd == NULL) { 2129 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2130 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2131 vha->vp_idx, __func__); 2132 return -ENOMEM; 2133 } 2134 memset(mcmd, 0, sizeof(*mcmd)); 2135 mcmd->cmd_type = TYPE_TGT_TMCMD; 2136 mcmd->sess = sess; 2137 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2138 mcmd->reset_count = ha->base_qpair->chip_reset; 2139 mcmd->tmr_func = QLA_TGT_ABTS; 2140 mcmd->qpair = h->qpair; 2141 mcmd->vha = vha; 2142 2143 /* 2144 * LUN is looked up by target-core internally based on the passed 2145 * abts->exchange_addr_to_abort tag. 2146 */ 2147 mcmd->se_cmd.cpuid = h->cpuid; 2148 2149 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2150 le32_to_cpu(abts->exchange_addr_to_abort)); 2151 if (!abort_cmd) 2152 return -EIO; 2153 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2154 2155 if (abort_cmd->qpair) { 2156 mcmd->qpair = abort_cmd->qpair; 2157 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2158 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2159 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2160 } 2161 2162 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2163 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2164 2165 return 0; 2166 } 2167 2168 /* 2169 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2170 */ 2171 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2172 struct abts_recv_from_24xx *abts) 2173 { 2174 struct qla_hw_data *ha = vha->hw; 2175 struct fc_port *sess; 2176 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2177 be_id_t s_id; 2178 int rc; 2179 unsigned long flags; 2180 2181 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2183 "qla_target(%d): ABTS: Abort Sequence not " 2184 "supported\n", vha->vp_idx); 2185 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2186 false); 2187 return; 2188 } 2189 2190 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2192 "qla_target(%d): ABTS: Unknown Exchange " 2193 "Address received\n", vha->vp_idx); 2194 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2195 false); 2196 return; 2197 } 2198 2199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2200 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2201 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2202 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2203 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2204 2205 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2206 2207 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2208 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2209 if (!sess) { 2210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2211 "qla_target(%d): task abort for non-existent session\n", 2212 vha->vp_idx); 2213 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2214 2215 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2216 false); 2217 return; 2218 } 2219 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2220 2221 2222 if (sess->deleted) { 2223 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2224 false); 2225 return; 2226 } 2227 2228 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2229 if (rc != 0) { 2230 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2231 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2232 vha->vp_idx, rc); 2233 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2234 false); 2235 return; 2236 } 2237 } 2238 2239 /* 2240 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2241 */ 2242 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2243 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2244 { 2245 struct scsi_qla_host *ha = mcmd->vha; 2246 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2247 struct ctio7_to_24xx *ctio; 2248 uint16_t temp; 2249 2250 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2251 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2252 ha, atio, resp_code); 2253 2254 2255 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2256 if (ctio == NULL) { 2257 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2258 "qla_target(%d): %s failed: unable to allocate " 2259 "request packet\n", ha->vp_idx, __func__); 2260 return; 2261 } 2262 2263 ctio->entry_type = CTIO_TYPE7; 2264 ctio->entry_count = 1; 2265 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2266 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2267 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2268 ctio->vp_index = ha->vp_idx; 2269 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2270 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2271 temp = (atio->u.isp24.attr << 9)| 2272 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2273 ctio->u.status1.flags = cpu_to_le16(temp); 2274 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2275 ctio->u.status1.ox_id = cpu_to_le16(temp); 2276 ctio->u.status1.scsi_status = 2277 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2278 ctio->u.status1.response_len = cpu_to_le16(8); 2279 ctio->u.status1.sense_data[0] = resp_code; 2280 2281 /* Memory Barrier */ 2282 wmb(); 2283 if (qpair->reqq_start_iocbs) 2284 qpair->reqq_start_iocbs(qpair); 2285 else 2286 qla2x00_start_iocbs(ha, qpair->req); 2287 } 2288 2289 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2290 { 2291 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2292 } 2293 EXPORT_SYMBOL(qlt_free_mcmd); 2294 2295 /* 2296 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2297 * reacquire 2298 */ 2299 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2300 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2301 { 2302 struct atio_from_isp *atio = &cmd->atio; 2303 struct ctio7_to_24xx *ctio; 2304 uint16_t temp; 2305 struct scsi_qla_host *vha = cmd->vha; 2306 2307 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2308 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2309 "sense_key=%02x, asc=%02x, ascq=%02x", 2310 vha, atio, scsi_status, sense_key, asc, ascq); 2311 2312 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2313 if (!ctio) { 2314 ql_dbg(ql_dbg_async, vha, 0x3067, 2315 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2316 vha->host_no, __func__); 2317 goto out; 2318 } 2319 2320 ctio->entry_type = CTIO_TYPE7; 2321 ctio->entry_count = 1; 2322 ctio->handle = QLA_TGT_SKIP_HANDLE; 2323 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2324 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2325 ctio->vp_index = vha->vp_idx; 2326 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2327 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2328 temp = (atio->u.isp24.attr << 9) | 2329 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2330 ctio->u.status1.flags = cpu_to_le16(temp); 2331 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2332 ctio->u.status1.ox_id = cpu_to_le16(temp); 2333 ctio->u.status1.scsi_status = 2334 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2335 ctio->u.status1.response_len = cpu_to_le16(18); 2336 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2337 2338 if (ctio->u.status1.residual != 0) 2339 ctio->u.status1.scsi_status |= 2340 cpu_to_le16(SS_RESIDUAL_UNDER); 2341 2342 /* Fixed format sense data. */ 2343 ctio->u.status1.sense_data[0] = 0x70; 2344 ctio->u.status1.sense_data[2] = sense_key; 2345 /* Additional sense length */ 2346 ctio->u.status1.sense_data[7] = 0xa; 2347 /* ASC and ASCQ */ 2348 ctio->u.status1.sense_data[12] = asc; 2349 ctio->u.status1.sense_data[13] = ascq; 2350 2351 /* Memory Barrier */ 2352 wmb(); 2353 2354 if (qpair->reqq_start_iocbs) 2355 qpair->reqq_start_iocbs(qpair); 2356 else 2357 qla2x00_start_iocbs(vha, qpair->req); 2358 2359 out: 2360 return; 2361 } 2362 2363 /* callback from target fabric module code */ 2364 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2365 { 2366 struct scsi_qla_host *vha = mcmd->sess->vha; 2367 struct qla_hw_data *ha = vha->hw; 2368 unsigned long flags; 2369 struct qla_qpair *qpair = mcmd->qpair; 2370 bool free_mcmd = true; 2371 2372 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2373 "TM response mcmd (%p) status %#x state %#x", 2374 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2375 2376 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2377 2378 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2379 /* 2380 * Either the port is not online or this request was from 2381 * previous life, just abort the processing. 2382 */ 2383 ql_dbg(ql_dbg_async, vha, 0xe100, 2384 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2385 vha->flags.online, qla2x00_reset_active(vha), 2386 mcmd->reset_count, qpair->chip_reset); 2387 ha->tgt.tgt_ops->free_mcmd(mcmd); 2388 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2389 return; 2390 } 2391 2392 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2393 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2394 case ELS_LOGO: 2395 case ELS_PRLO: 2396 case ELS_TPRLO: 2397 ql_dbg(ql_dbg_disc, vha, 0x2106, 2398 "TM response logo %8phC status %#x state %#x", 2399 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2400 mcmd->flags); 2401 qlt_schedule_sess_for_deletion(mcmd->sess); 2402 break; 2403 default: 2404 qlt_send_notify_ack(vha->hw->base_qpair, 2405 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2406 break; 2407 } 2408 } else { 2409 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2410 qlt_build_abts_resp_iocb(mcmd); 2411 free_mcmd = false; 2412 } else 2413 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2414 mcmd->fc_tm_rsp); 2415 } 2416 /* 2417 * Make the callback for ->free_mcmd() to queue_work() and invoke 2418 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2419 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2420 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2421 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2422 * qlt_xmit_tm_rsp() returns here.. 2423 */ 2424 if (free_mcmd) 2425 ha->tgt.tgt_ops->free_mcmd(mcmd); 2426 2427 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2428 } 2429 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2430 2431 /* No locks */ 2432 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2433 { 2434 struct qla_tgt_cmd *cmd = prm->cmd; 2435 2436 BUG_ON(cmd->sg_cnt == 0); 2437 2438 prm->sg = (struct scatterlist *)cmd->sg; 2439 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2440 cmd->sg_cnt, cmd->dma_data_direction); 2441 if (unlikely(prm->seg_cnt == 0)) 2442 goto out_err; 2443 2444 prm->cmd->sg_mapped = 1; 2445 2446 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2447 /* 2448 * If greater than four sg entries then we need to allocate 2449 * the continuation entries 2450 */ 2451 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2452 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2453 QLA_TGT_DATASEGS_PER_CMD_24XX, 2454 QLA_TGT_DATASEGS_PER_CONT_24XX); 2455 } else { 2456 /* DIF */ 2457 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2458 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2459 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2460 prm->tot_dsds = prm->seg_cnt; 2461 } else 2462 prm->tot_dsds = prm->seg_cnt; 2463 2464 if (cmd->prot_sg_cnt) { 2465 prm->prot_sg = cmd->prot_sg; 2466 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2467 cmd->prot_sg, cmd->prot_sg_cnt, 2468 cmd->dma_data_direction); 2469 if (unlikely(prm->prot_seg_cnt == 0)) 2470 goto out_err; 2471 2472 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2473 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2474 /* Dif Bundling not support here */ 2475 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2476 cmd->blk_sz); 2477 prm->tot_dsds += prm->prot_seg_cnt; 2478 } else 2479 prm->tot_dsds += prm->prot_seg_cnt; 2480 } 2481 } 2482 2483 return 0; 2484 2485 out_err: 2486 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2487 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2488 0, prm->cmd->sg_cnt); 2489 return -1; 2490 } 2491 2492 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2493 { 2494 struct qla_hw_data *ha; 2495 struct qla_qpair *qpair; 2496 2497 if (!cmd->sg_mapped) 2498 return; 2499 2500 qpair = cmd->qpair; 2501 2502 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2503 cmd->dma_data_direction); 2504 cmd->sg_mapped = 0; 2505 2506 if (cmd->prot_sg_cnt) 2507 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2508 cmd->dma_data_direction); 2509 2510 if (!cmd->ctx) 2511 return; 2512 ha = vha->hw; 2513 if (cmd->ctx_dsd_alloced) 2514 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2515 2516 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2517 } 2518 2519 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2520 uint32_t req_cnt) 2521 { 2522 uint32_t cnt; 2523 struct req_que *req = qpair->req; 2524 2525 if (req->cnt < (req_cnt + 2)) { 2526 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2527 rd_reg_dword_relaxed(req->req_q_out)); 2528 2529 if (req->ring_index < cnt) 2530 req->cnt = cnt - req->ring_index; 2531 else 2532 req->cnt = req->length - (req->ring_index - cnt); 2533 2534 if (unlikely(req->cnt < (req_cnt + 2))) 2535 return -EAGAIN; 2536 } 2537 2538 req->cnt -= req_cnt; 2539 2540 return 0; 2541 } 2542 2543 /* 2544 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2545 */ 2546 static inline void *qlt_get_req_pkt(struct req_que *req) 2547 { 2548 /* Adjust ring index. */ 2549 req->ring_index++; 2550 if (req->ring_index == req->length) { 2551 req->ring_index = 0; 2552 req->ring_ptr = req->ring; 2553 } else { 2554 req->ring_ptr++; 2555 } 2556 return (cont_entry_t *)req->ring_ptr; 2557 } 2558 2559 /* ha->hardware_lock supposed to be held on entry */ 2560 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2561 { 2562 uint32_t h; 2563 int index; 2564 uint8_t found = 0; 2565 struct req_que *req = qpair->req; 2566 2567 h = req->current_outstanding_cmd; 2568 2569 for (index = 1; index < req->num_outstanding_cmds; index++) { 2570 h++; 2571 if (h == req->num_outstanding_cmds) 2572 h = 1; 2573 2574 if (h == QLA_TGT_SKIP_HANDLE) 2575 continue; 2576 2577 if (!req->outstanding_cmds[h]) { 2578 found = 1; 2579 break; 2580 } 2581 } 2582 2583 if (found) { 2584 req->current_outstanding_cmd = h; 2585 } else { 2586 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2587 "qla_target(%d): Ran out of empty cmd slots\n", 2588 qpair->vha->vp_idx); 2589 h = QLA_TGT_NULL_HANDLE; 2590 } 2591 2592 return h; 2593 } 2594 2595 /* ha->hardware_lock supposed to be held on entry */ 2596 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2597 struct qla_tgt_prm *prm) 2598 { 2599 uint32_t h; 2600 struct ctio7_to_24xx *pkt; 2601 struct atio_from_isp *atio = &prm->cmd->atio; 2602 uint16_t temp; 2603 struct qla_tgt_cmd *cmd = prm->cmd; 2604 2605 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2606 prm->pkt = pkt; 2607 memset(pkt, 0, sizeof(*pkt)); 2608 2609 pkt->entry_type = CTIO_TYPE7; 2610 pkt->entry_count = (uint8_t)prm->req_cnt; 2611 pkt->vp_index = prm->cmd->vp_idx; 2612 2613 h = qlt_make_handle(qpair); 2614 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2615 /* 2616 * CTIO type 7 from the firmware doesn't provide a way to 2617 * know the initiator's LOOP ID, hence we can't find 2618 * the session and, so, the command. 2619 */ 2620 return -EAGAIN; 2621 } else 2622 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2623 2624 pkt->handle = make_handle(qpair->req->id, h); 2625 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2626 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2627 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2628 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2629 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2630 temp = atio->u.isp24.attr << 9; 2631 pkt->u.status0.flags |= cpu_to_le16(temp); 2632 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2633 pkt->u.status0.ox_id = cpu_to_le16(temp); 2634 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2635 2636 if (cmd->edif) { 2637 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2638 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2639 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2640 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2641 2642 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2643 } 2644 2645 return 0; 2646 } 2647 2648 /* 2649 * ha->hardware_lock supposed to be held on entry. We have already made sure 2650 * that there is sufficient amount of request entries to not drop it. 2651 */ 2652 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2653 { 2654 int cnt; 2655 struct dsd64 *cur_dsd; 2656 2657 /* Build continuation packets */ 2658 while (prm->seg_cnt > 0) { 2659 cont_a64_entry_t *cont_pkt64 = 2660 (cont_a64_entry_t *)qlt_get_req_pkt( 2661 prm->cmd->qpair->req); 2662 2663 /* 2664 * Make sure that from cont_pkt64 none of 2665 * 64-bit specific fields used for 32-bit 2666 * addressing. Cast to (cont_entry_t *) for 2667 * that. 2668 */ 2669 2670 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2671 2672 cont_pkt64->entry_count = 1; 2673 cont_pkt64->sys_define = 0; 2674 2675 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2676 cur_dsd = cont_pkt64->dsd; 2677 2678 /* Load continuation entry data segments */ 2679 for (cnt = 0; 2680 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2681 cnt++, prm->seg_cnt--) { 2682 append_dsd64(&cur_dsd, prm->sg); 2683 prm->sg = sg_next(prm->sg); 2684 } 2685 } 2686 } 2687 2688 /* 2689 * ha->hardware_lock supposed to be held on entry. We have already made sure 2690 * that there is sufficient amount of request entries to not drop it. 2691 */ 2692 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2693 { 2694 int cnt; 2695 struct dsd64 *cur_dsd; 2696 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2697 2698 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2699 2700 /* Setup packet address segment pointer */ 2701 cur_dsd = &pkt24->u.status0.dsd; 2702 2703 /* Set total data segment count */ 2704 if (prm->seg_cnt) 2705 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2706 2707 if (prm->seg_cnt == 0) { 2708 /* No data transfer */ 2709 cur_dsd->address = 0; 2710 cur_dsd->length = 0; 2711 return; 2712 } 2713 2714 /* If scatter gather */ 2715 2716 /* Load command entry data segments */ 2717 for (cnt = 0; 2718 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2719 cnt++, prm->seg_cnt--) { 2720 append_dsd64(&cur_dsd, prm->sg); 2721 prm->sg = sg_next(prm->sg); 2722 } 2723 2724 qlt_load_cont_data_segments(prm); 2725 } 2726 2727 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2728 { 2729 return cmd->bufflen > 0; 2730 } 2731 2732 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2733 { 2734 struct qla_tgt_cmd *cmd; 2735 struct scsi_qla_host *vha; 2736 2737 /* asc 0x10=dif error */ 2738 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2739 cmd = prm->cmd; 2740 vha = cmd->vha; 2741 /* ASCQ */ 2742 switch (prm->sense_buffer[13]) { 2743 case 1: 2744 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2745 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2746 "se_cmd=%p tag[%x]", 2747 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2748 cmd->atio.u.isp24.exchange_addr); 2749 break; 2750 case 2: 2751 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2752 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2753 "se_cmd=%p tag[%x]", 2754 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2755 cmd->atio.u.isp24.exchange_addr); 2756 break; 2757 case 3: 2758 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2759 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2760 "se_cmd=%p tag[%x]", 2761 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2762 cmd->atio.u.isp24.exchange_addr); 2763 break; 2764 default: 2765 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2766 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2767 "se_cmd=%p tag[%x]", 2768 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2769 cmd->atio.u.isp24.exchange_addr); 2770 break; 2771 } 2772 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2773 } 2774 } 2775 2776 /* 2777 * Called without ha->hardware_lock held 2778 */ 2779 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2780 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2781 uint32_t *full_req_cnt) 2782 { 2783 struct se_cmd *se_cmd = &cmd->se_cmd; 2784 struct qla_qpair *qpair = cmd->qpair; 2785 2786 prm->cmd = cmd; 2787 prm->tgt = cmd->tgt; 2788 prm->pkt = NULL; 2789 prm->rq_result = scsi_status; 2790 prm->sense_buffer = &cmd->sense_buffer[0]; 2791 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2792 prm->sg = NULL; 2793 prm->seg_cnt = -1; 2794 prm->req_cnt = 1; 2795 prm->residual = 0; 2796 prm->add_status_pkt = 0; 2797 prm->prot_sg = NULL; 2798 prm->prot_seg_cnt = 0; 2799 prm->tot_dsds = 0; 2800 2801 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2802 if (qlt_pci_map_calc_cnt(prm) != 0) 2803 return -EAGAIN; 2804 } 2805 2806 *full_req_cnt = prm->req_cnt; 2807 2808 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2809 prm->residual = se_cmd->residual_count; 2810 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2811 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2812 prm->residual, se_cmd->tag, 2813 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2814 cmd->bufflen, prm->rq_result); 2815 prm->rq_result |= SS_RESIDUAL_UNDER; 2816 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2817 prm->residual = se_cmd->residual_count; 2818 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2819 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2820 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2821 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2822 prm->rq_result |= SS_RESIDUAL_OVER; 2823 } 2824 2825 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2826 /* 2827 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2828 * ignored in *xmit_response() below 2829 */ 2830 if (qlt_has_data(cmd)) { 2831 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2832 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2833 (prm->rq_result != 0))) { 2834 prm->add_status_pkt = 1; 2835 (*full_req_cnt)++; 2836 } 2837 } 2838 } 2839 2840 return 0; 2841 } 2842 2843 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2844 int sending_sense) 2845 { 2846 if (cmd->qpair->enable_class_2) 2847 return 0; 2848 2849 if (sending_sense) 2850 return cmd->conf_compl_supported; 2851 else 2852 return cmd->qpair->enable_explicit_conf && 2853 cmd->conf_compl_supported; 2854 } 2855 2856 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2857 struct qla_tgt_prm *prm) 2858 { 2859 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2860 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2861 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2862 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2863 ctio->u.status0.flags |= cpu_to_le16( 2864 CTIO7_FLAGS_EXPLICIT_CONFORM | 2865 CTIO7_FLAGS_CONFORM_REQ); 2866 } 2867 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2868 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2869 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2870 int i; 2871 2872 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2873 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2874 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2875 "Skipping EXPLICIT_CONFORM and " 2876 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2877 "non GOOD status\n"); 2878 goto skip_explict_conf; 2879 } 2880 ctio->u.status1.flags |= cpu_to_le16( 2881 CTIO7_FLAGS_EXPLICIT_CONFORM | 2882 CTIO7_FLAGS_CONFORM_REQ); 2883 } 2884 skip_explict_conf: 2885 ctio->u.status1.flags &= 2886 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2887 ctio->u.status1.flags |= 2888 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2889 ctio->u.status1.scsi_status |= 2890 cpu_to_le16(SS_SENSE_LEN_VALID); 2891 ctio->u.status1.sense_length = 2892 cpu_to_le16(prm->sense_buffer_len); 2893 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2894 uint32_t v; 2895 2896 v = get_unaligned_be32( 2897 &((uint32_t *)prm->sense_buffer)[i]); 2898 put_unaligned_le32(v, 2899 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2900 } 2901 qlt_print_dif_err(prm); 2902 2903 } else { 2904 ctio->u.status1.flags &= 2905 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2906 ctio->u.status1.flags |= 2907 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2908 ctio->u.status1.sense_length = 0; 2909 memset(ctio->u.status1.sense_data, 0, 2910 sizeof(ctio->u.status1.sense_data)); 2911 } 2912 2913 /* Sense with len > 24, is it possible ??? */ 2914 } 2915 2916 static inline int 2917 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2918 { 2919 switch (se_cmd->prot_op) { 2920 case TARGET_PROT_DOUT_INSERT: 2921 case TARGET_PROT_DIN_STRIP: 2922 if (ql2xenablehba_err_chk >= 1) 2923 return 1; 2924 break; 2925 case TARGET_PROT_DOUT_PASS: 2926 case TARGET_PROT_DIN_PASS: 2927 if (ql2xenablehba_err_chk >= 2) 2928 return 1; 2929 break; 2930 case TARGET_PROT_DIN_INSERT: 2931 case TARGET_PROT_DOUT_STRIP: 2932 return 1; 2933 default: 2934 break; 2935 } 2936 return 0; 2937 } 2938 2939 static inline int 2940 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2941 { 2942 switch (se_cmd->prot_op) { 2943 case TARGET_PROT_DIN_INSERT: 2944 case TARGET_PROT_DOUT_INSERT: 2945 case TARGET_PROT_DIN_STRIP: 2946 case TARGET_PROT_DOUT_STRIP: 2947 case TARGET_PROT_DIN_PASS: 2948 case TARGET_PROT_DOUT_PASS: 2949 return 1; 2950 default: 2951 return 0; 2952 } 2953 return 0; 2954 } 2955 2956 /* 2957 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2958 */ 2959 static void 2960 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2961 uint16_t *pfw_prot_opts) 2962 { 2963 struct se_cmd *se_cmd = &cmd->se_cmd; 2964 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2965 scsi_qla_host_t *vha = cmd->tgt->vha; 2966 struct qla_hw_data *ha = vha->hw; 2967 uint32_t t32 = 0; 2968 2969 /* 2970 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2971 * have been immplemented by TCM, before AppTag is avail. 2972 * Look for modesense_handlers[] 2973 */ 2974 ctx->app_tag = 0; 2975 ctx->app_tag_mask[0] = 0x0; 2976 ctx->app_tag_mask[1] = 0x0; 2977 2978 if (IS_PI_UNINIT_CAPABLE(ha)) { 2979 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2980 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2981 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2982 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2983 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2984 } 2985 2986 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2987 2988 switch (se_cmd->prot_type) { 2989 case TARGET_DIF_TYPE0_PROT: 2990 /* 2991 * No check for ql2xenablehba_err_chk, as it 2992 * would be an I/O error if hba tag generation 2993 * is not done. 2994 */ 2995 ctx->ref_tag = cpu_to_le32(lba); 2996 /* enable ALL bytes of the ref tag */ 2997 ctx->ref_tag_mask[0] = 0xff; 2998 ctx->ref_tag_mask[1] = 0xff; 2999 ctx->ref_tag_mask[2] = 0xff; 3000 ctx->ref_tag_mask[3] = 0xff; 3001 break; 3002 case TARGET_DIF_TYPE1_PROT: 3003 /* 3004 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3005 * REF tag, and 16 bit app tag. 3006 */ 3007 ctx->ref_tag = cpu_to_le32(lba); 3008 if (!qla_tgt_ref_mask_check(se_cmd) || 3009 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3010 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3011 break; 3012 } 3013 /* enable ALL bytes of the ref tag */ 3014 ctx->ref_tag_mask[0] = 0xff; 3015 ctx->ref_tag_mask[1] = 0xff; 3016 ctx->ref_tag_mask[2] = 0xff; 3017 ctx->ref_tag_mask[3] = 0xff; 3018 break; 3019 case TARGET_DIF_TYPE2_PROT: 3020 /* 3021 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3022 * tag has to match LBA in CDB + N 3023 */ 3024 ctx->ref_tag = cpu_to_le32(lba); 3025 if (!qla_tgt_ref_mask_check(se_cmd) || 3026 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3027 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3028 break; 3029 } 3030 /* enable ALL bytes of the ref tag */ 3031 ctx->ref_tag_mask[0] = 0xff; 3032 ctx->ref_tag_mask[1] = 0xff; 3033 ctx->ref_tag_mask[2] = 0xff; 3034 ctx->ref_tag_mask[3] = 0xff; 3035 break; 3036 case TARGET_DIF_TYPE3_PROT: 3037 /* For TYPE 3 protection: 16 bit GUARD only */ 3038 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3039 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3040 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3041 break; 3042 } 3043 } 3044 3045 static inline int 3046 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3047 { 3048 struct dsd64 *cur_dsd; 3049 uint32_t transfer_length = 0; 3050 uint32_t data_bytes; 3051 uint32_t dif_bytes; 3052 uint8_t bundling = 1; 3053 struct crc_context *crc_ctx_pkt = NULL; 3054 struct qla_hw_data *ha; 3055 struct ctio_crc2_to_fw *pkt; 3056 dma_addr_t crc_ctx_dma; 3057 uint16_t fw_prot_opts = 0; 3058 struct qla_tgt_cmd *cmd = prm->cmd; 3059 struct se_cmd *se_cmd = &cmd->se_cmd; 3060 uint32_t h; 3061 struct atio_from_isp *atio = &prm->cmd->atio; 3062 struct qla_tc_param tc; 3063 uint16_t t16; 3064 scsi_qla_host_t *vha = cmd->vha; 3065 3066 ha = vha->hw; 3067 3068 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3069 prm->pkt = pkt; 3070 memset(pkt, 0, sizeof(*pkt)); 3071 3072 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3073 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3074 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3075 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3076 3077 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3078 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3079 bundling = 0; 3080 3081 /* Compute dif len and adjust data len to incude protection */ 3082 data_bytes = cmd->bufflen; 3083 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3084 3085 switch (se_cmd->prot_op) { 3086 case TARGET_PROT_DIN_INSERT: 3087 case TARGET_PROT_DOUT_STRIP: 3088 transfer_length = data_bytes; 3089 if (cmd->prot_sg_cnt) 3090 data_bytes += dif_bytes; 3091 break; 3092 case TARGET_PROT_DIN_STRIP: 3093 case TARGET_PROT_DOUT_INSERT: 3094 case TARGET_PROT_DIN_PASS: 3095 case TARGET_PROT_DOUT_PASS: 3096 transfer_length = data_bytes + dif_bytes; 3097 break; 3098 default: 3099 BUG(); 3100 break; 3101 } 3102 3103 if (!qlt_hba_err_chk_enabled(se_cmd)) 3104 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3105 /* HBA error checking enabled */ 3106 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3107 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3108 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3109 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3110 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3111 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3112 } 3113 3114 switch (se_cmd->prot_op) { 3115 case TARGET_PROT_DIN_INSERT: 3116 case TARGET_PROT_DOUT_INSERT: 3117 fw_prot_opts |= PO_MODE_DIF_INSERT; 3118 break; 3119 case TARGET_PROT_DIN_STRIP: 3120 case TARGET_PROT_DOUT_STRIP: 3121 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3122 break; 3123 case TARGET_PROT_DIN_PASS: 3124 case TARGET_PROT_DOUT_PASS: 3125 fw_prot_opts |= PO_MODE_DIF_PASS; 3126 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3127 break; 3128 default:/* Normal Request */ 3129 fw_prot_opts |= PO_MODE_DIF_PASS; 3130 break; 3131 } 3132 3133 /* ---- PKT ---- */ 3134 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3135 pkt->entry_type = CTIO_CRC2; 3136 pkt->entry_count = 1; 3137 pkt->vp_index = cmd->vp_idx; 3138 3139 h = qlt_make_handle(qpair); 3140 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3141 /* 3142 * CTIO type 7 from the firmware doesn't provide a way to 3143 * know the initiator's LOOP ID, hence we can't find 3144 * the session and, so, the command. 3145 */ 3146 return -EAGAIN; 3147 } else 3148 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3149 3150 pkt->handle = make_handle(qpair->req->id, h); 3151 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3152 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3153 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3154 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3155 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3156 3157 /* silence compile warning */ 3158 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3159 pkt->ox_id = cpu_to_le16(t16); 3160 3161 t16 = (atio->u.isp24.attr << 9); 3162 pkt->flags |= cpu_to_le16(t16); 3163 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3164 3165 /* Set transfer direction */ 3166 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3167 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3168 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3169 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3170 3171 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3172 /* Fibre channel byte count */ 3173 pkt->transfer_length = cpu_to_le32(transfer_length); 3174 3175 /* ----- CRC context -------- */ 3176 3177 /* Allocate CRC context from global pool */ 3178 crc_ctx_pkt = cmd->ctx = 3179 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3180 3181 if (!crc_ctx_pkt) 3182 goto crc_queuing_error; 3183 3184 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3185 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3186 3187 /* Set handle */ 3188 crc_ctx_pkt->handle = pkt->handle; 3189 3190 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3191 3192 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3193 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3194 3195 if (!bundling) { 3196 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3197 } else { 3198 /* 3199 * Configure Bundling if we need to fetch interlaving 3200 * protection PCI accesses 3201 */ 3202 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3203 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3204 crc_ctx_pkt->u.bundling.dseg_count = 3205 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3206 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3207 } 3208 3209 /* Finish the common fields of CRC pkt */ 3210 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3211 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3212 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3213 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3214 3215 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3216 tc.vha = vha; 3217 tc.blk_sz = cmd->blk_sz; 3218 tc.bufflen = cmd->bufflen; 3219 tc.sg = cmd->sg; 3220 tc.prot_sg = cmd->prot_sg; 3221 tc.ctx = crc_ctx_pkt; 3222 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3223 3224 /* Walks data segments */ 3225 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3226 3227 if (!bundling && prm->prot_seg_cnt) { 3228 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3229 prm->tot_dsds, &tc)) 3230 goto crc_queuing_error; 3231 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3232 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3233 goto crc_queuing_error; 3234 3235 if (bundling && prm->prot_seg_cnt) { 3236 /* Walks dif segments */ 3237 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3238 3239 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3240 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3241 prm->prot_seg_cnt, cmd)) 3242 goto crc_queuing_error; 3243 } 3244 return QLA_SUCCESS; 3245 3246 crc_queuing_error: 3247 /* Cleanup will be performed by the caller */ 3248 qpair->req->outstanding_cmds[h] = NULL; 3249 3250 return QLA_FUNCTION_FAILED; 3251 } 3252 3253 /* 3254 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3255 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3256 */ 3257 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3258 uint8_t scsi_status) 3259 { 3260 struct scsi_qla_host *vha = cmd->vha; 3261 struct qla_qpair *qpair = cmd->qpair; 3262 struct ctio7_to_24xx *pkt; 3263 struct qla_tgt_prm prm; 3264 uint32_t full_req_cnt = 0; 3265 unsigned long flags = 0; 3266 int res; 3267 3268 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3269 (cmd->sess && cmd->sess->deleted)) { 3270 cmd->state = QLA_TGT_STATE_PROCESSED; 3271 return 0; 3272 } 3273 3274 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3275 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3276 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3277 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3278 &cmd->se_cmd, qpair->id); 3279 3280 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3281 &full_req_cnt); 3282 if (unlikely(res != 0)) { 3283 return res; 3284 } 3285 3286 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3287 3288 if (xmit_type == QLA_TGT_XMIT_STATUS) 3289 qpair->tgt_counters.core_qla_snd_status++; 3290 else 3291 qpair->tgt_counters.core_qla_que_buf++; 3292 3293 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3294 /* 3295 * Either the port is not online or this request was from 3296 * previous life, just abort the processing. 3297 */ 3298 cmd->state = QLA_TGT_STATE_PROCESSED; 3299 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3300 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3301 vha->flags.online, qla2x00_reset_active(vha), 3302 cmd->reset_count, qpair->chip_reset); 3303 res = 0; 3304 goto out_unmap_unlock; 3305 } 3306 3307 /* Does F/W have an IOCBs for this request */ 3308 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3309 if (unlikely(res)) 3310 goto out_unmap_unlock; 3311 3312 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3313 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3314 else 3315 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3316 if (unlikely(res != 0)) { 3317 qpair->req->cnt += full_req_cnt; 3318 goto out_unmap_unlock; 3319 } 3320 3321 pkt = (struct ctio7_to_24xx *)prm.pkt; 3322 3323 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3324 pkt->u.status0.flags |= 3325 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3326 CTIO7_FLAGS_STATUS_MODE_0); 3327 3328 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3329 qlt_load_data_segments(&prm); 3330 3331 if (prm.add_status_pkt == 0) { 3332 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3333 pkt->u.status0.scsi_status = 3334 cpu_to_le16(prm.rq_result); 3335 if (!cmd->edif) 3336 pkt->u.status0.residual = 3337 cpu_to_le32(prm.residual); 3338 3339 pkt->u.status0.flags |= cpu_to_le16( 3340 CTIO7_FLAGS_SEND_STATUS); 3341 if (qlt_need_explicit_conf(cmd, 0)) { 3342 pkt->u.status0.flags |= 3343 cpu_to_le16( 3344 CTIO7_FLAGS_EXPLICIT_CONFORM | 3345 CTIO7_FLAGS_CONFORM_REQ); 3346 } 3347 } 3348 3349 } else { 3350 /* 3351 * We have already made sure that there is sufficient 3352 * amount of request entries to not drop HW lock in 3353 * req_pkt(). 3354 */ 3355 struct ctio7_to_24xx *ctio = 3356 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3357 qpair->req); 3358 3359 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3360 "Building additional status packet 0x%p.\n", 3361 ctio); 3362 3363 /* 3364 * T10Dif: ctio_crc2_to_fw overlay ontop of 3365 * ctio7_to_24xx 3366 */ 3367 memcpy(ctio, pkt, sizeof(*ctio)); 3368 /* reset back to CTIO7 */ 3369 ctio->entry_count = 1; 3370 ctio->entry_type = CTIO_TYPE7; 3371 ctio->dseg_count = 0; 3372 ctio->u.status1.flags &= ~cpu_to_le16( 3373 CTIO7_FLAGS_DATA_IN); 3374 3375 /* Real finish is ctio_m1's finish */ 3376 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3377 pkt->u.status0.flags |= cpu_to_le16( 3378 CTIO7_FLAGS_DONT_RET_CTIO); 3379 3380 /* qlt_24xx_init_ctio_to_isp will correct 3381 * all neccessary fields that's part of CTIO7. 3382 * There should be no residual of CTIO-CRC2 data. 3383 */ 3384 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3385 &prm); 3386 } 3387 } else 3388 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3389 3390 3391 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3392 cmd->cmd_sent_to_fw = 1; 3393 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3394 3395 /* Memory Barrier */ 3396 wmb(); 3397 if (qpair->reqq_start_iocbs) 3398 qpair->reqq_start_iocbs(qpair); 3399 else 3400 qla2x00_start_iocbs(vha, qpair->req); 3401 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3402 3403 return 0; 3404 3405 out_unmap_unlock: 3406 qlt_unmap_sg(vha, cmd); 3407 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3408 3409 return res; 3410 } 3411 EXPORT_SYMBOL(qlt_xmit_response); 3412 3413 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3414 { 3415 struct ctio7_to_24xx *pkt; 3416 struct scsi_qla_host *vha = cmd->vha; 3417 struct qla_tgt *tgt = cmd->tgt; 3418 struct qla_tgt_prm prm; 3419 unsigned long flags = 0; 3420 int res = 0; 3421 struct qla_qpair *qpair = cmd->qpair; 3422 3423 memset(&prm, 0, sizeof(prm)); 3424 prm.cmd = cmd; 3425 prm.tgt = tgt; 3426 prm.sg = NULL; 3427 prm.req_cnt = 1; 3428 3429 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3430 (cmd->sess && cmd->sess->deleted)) { 3431 /* 3432 * Either the port is not online or this request was from 3433 * previous life, just abort the processing. 3434 */ 3435 cmd->aborted = 1; 3436 cmd->write_data_transferred = 0; 3437 cmd->state = QLA_TGT_STATE_DATA_IN; 3438 vha->hw->tgt.tgt_ops->handle_data(cmd); 3439 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3440 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3441 vha->flags.online, qla2x00_reset_active(vha), 3442 cmd->reset_count, qpair->chip_reset); 3443 return 0; 3444 } 3445 3446 /* Calculate number of entries and segments required */ 3447 if (qlt_pci_map_calc_cnt(&prm) != 0) 3448 return -EAGAIN; 3449 3450 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3451 /* Does F/W have an IOCBs for this request */ 3452 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3453 if (res != 0) 3454 goto out_unlock_free_unmap; 3455 if (cmd->se_cmd.prot_op) 3456 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3457 else 3458 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3459 3460 if (unlikely(res != 0)) { 3461 qpair->req->cnt += prm.req_cnt; 3462 goto out_unlock_free_unmap; 3463 } 3464 3465 pkt = (struct ctio7_to_24xx *)prm.pkt; 3466 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3467 CTIO7_FLAGS_STATUS_MODE_0); 3468 3469 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3470 qlt_load_data_segments(&prm); 3471 3472 cmd->state = QLA_TGT_STATE_NEED_DATA; 3473 cmd->cmd_sent_to_fw = 1; 3474 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3475 3476 /* Memory Barrier */ 3477 wmb(); 3478 if (qpair->reqq_start_iocbs) 3479 qpair->reqq_start_iocbs(qpair); 3480 else 3481 qla2x00_start_iocbs(vha, qpair->req); 3482 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3483 3484 return res; 3485 3486 out_unlock_free_unmap: 3487 qlt_unmap_sg(vha, cmd); 3488 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3489 3490 return res; 3491 } 3492 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3493 3494 3495 /* 3496 * it is assumed either hardware_lock or qpair lock is held. 3497 */ 3498 static void 3499 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3500 struct ctio_crc_from_fw *sts) 3501 { 3502 uint8_t *ap = &sts->actual_dif[0]; 3503 uint8_t *ep = &sts->expected_dif[0]; 3504 uint64_t lba = cmd->se_cmd.t_task_lba; 3505 uint8_t scsi_status, sense_key, asc, ascq; 3506 unsigned long flags; 3507 struct scsi_qla_host *vha = cmd->vha; 3508 3509 cmd->trc_flags |= TRC_DIF_ERR; 3510 3511 cmd->a_guard = get_unaligned_be16(ap + 0); 3512 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3513 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3514 3515 cmd->e_guard = get_unaligned_be16(ep + 0); 3516 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3517 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3518 3519 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3520 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3521 3522 scsi_status = sense_key = asc = ascq = 0; 3523 3524 /* check appl tag */ 3525 if (cmd->e_app_tag != cmd->a_app_tag) { 3526 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3527 "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]", 3528 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3529 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3530 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3531 cmd->atio.u.isp24.fcp_hdr.ox_id); 3532 3533 cmd->dif_err_code = DIF_ERR_APP; 3534 scsi_status = SAM_STAT_CHECK_CONDITION; 3535 sense_key = ABORTED_COMMAND; 3536 asc = 0x10; 3537 ascq = 0x2; 3538 } 3539 3540 /* check ref tag */ 3541 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3542 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3543 "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] ", 3544 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3545 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3546 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3547 cmd->atio.u.isp24.fcp_hdr.ox_id); 3548 3549 cmd->dif_err_code = DIF_ERR_REF; 3550 scsi_status = SAM_STAT_CHECK_CONDITION; 3551 sense_key = ABORTED_COMMAND; 3552 asc = 0x10; 3553 ascq = 0x3; 3554 goto out; 3555 } 3556 3557 /* check guard */ 3558 if (cmd->e_guard != cmd->a_guard) { 3559 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3560 "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]", 3561 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3562 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3563 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3564 cmd->atio.u.isp24.fcp_hdr.ox_id); 3565 3566 cmd->dif_err_code = DIF_ERR_GRD; 3567 scsi_status = SAM_STAT_CHECK_CONDITION; 3568 sense_key = ABORTED_COMMAND; 3569 asc = 0x10; 3570 ascq = 0x1; 3571 } 3572 out: 3573 switch (cmd->state) { 3574 case QLA_TGT_STATE_NEED_DATA: 3575 /* handle_data will load DIF error code */ 3576 cmd->state = QLA_TGT_STATE_DATA_IN; 3577 vha->hw->tgt.tgt_ops->handle_data(cmd); 3578 break; 3579 default: 3580 spin_lock_irqsave(&cmd->cmd_lock, flags); 3581 if (cmd->aborted) { 3582 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3583 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3584 break; 3585 } 3586 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3587 3588 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3589 ascq); 3590 /* assume scsi status gets out on the wire. 3591 * Will not wait for completion. 3592 */ 3593 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3594 break; 3595 } 3596 } 3597 3598 /* If hardware_lock held on entry, might drop it, then reaquire */ 3599 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3600 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3601 struct imm_ntfy_from_isp *ntfy) 3602 { 3603 struct nack_to_isp *nack; 3604 struct qla_hw_data *ha = vha->hw; 3605 request_t *pkt; 3606 int ret = 0; 3607 3608 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3609 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3610 3611 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3612 if (pkt == NULL) { 3613 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3614 "qla_target(%d): %s failed: unable to allocate " 3615 "request packet\n", vha->vp_idx, __func__); 3616 return -ENOMEM; 3617 } 3618 3619 pkt->entry_type = NOTIFY_ACK_TYPE; 3620 pkt->entry_count = 1; 3621 pkt->handle = QLA_TGT_SKIP_HANDLE; 3622 3623 nack = (struct nack_to_isp *)pkt; 3624 nack->ox_id = ntfy->ox_id; 3625 3626 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3627 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3628 nack->u.isp24.flags = ntfy->u.isp24.flags & 3629 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3630 } 3631 3632 /* terminate */ 3633 nack->u.isp24.flags |= 3634 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3635 3636 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3637 nack->u.isp24.status = ntfy->u.isp24.status; 3638 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3639 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3640 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3641 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3642 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3643 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3644 3645 qla2x00_start_iocbs(vha, vha->req); 3646 return ret; 3647 } 3648 3649 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3650 struct imm_ntfy_from_isp *imm, int ha_locked) 3651 { 3652 int rc; 3653 3654 WARN_ON_ONCE(!ha_locked); 3655 rc = __qlt_send_term_imm_notif(vha, imm); 3656 pr_debug("rc = %d\n", rc); 3657 } 3658 3659 /* 3660 * If hardware_lock held on entry, might drop it, then reaquire 3661 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3662 */ 3663 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3664 struct qla_tgt_cmd *cmd, 3665 struct atio_from_isp *atio) 3666 { 3667 struct scsi_qla_host *vha = qpair->vha; 3668 struct ctio7_to_24xx *ctio24; 3669 struct qla_hw_data *ha = vha->hw; 3670 request_t *pkt; 3671 int ret = 0; 3672 uint16_t temp; 3673 3674 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3675 3676 if (cmd) 3677 vha = cmd->vha; 3678 3679 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3680 if (pkt == NULL) { 3681 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3682 "qla_target(%d): %s failed: unable to allocate " 3683 "request packet\n", vha->vp_idx, __func__); 3684 return -ENOMEM; 3685 } 3686 3687 if (cmd != NULL) { 3688 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3689 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3690 "qla_target(%d): Terminating cmd %p with " 3691 "incorrect state %d\n", vha->vp_idx, cmd, 3692 cmd->state); 3693 } else 3694 ret = 1; 3695 } 3696 3697 qpair->tgt_counters.num_term_xchg_sent++; 3698 pkt->entry_count = 1; 3699 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3700 3701 ctio24 = (struct ctio7_to_24xx *)pkt; 3702 ctio24->entry_type = CTIO_TYPE7; 3703 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3704 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3705 ctio24->vp_index = vha->vp_idx; 3706 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3707 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3708 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3709 CTIO7_FLAGS_TERMINATE; 3710 ctio24->u.status1.flags = cpu_to_le16(temp); 3711 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3712 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3713 3714 /* Memory Barrier */ 3715 wmb(); 3716 if (qpair->reqq_start_iocbs) 3717 qpair->reqq_start_iocbs(qpair); 3718 else 3719 qla2x00_start_iocbs(vha, qpair->req); 3720 return ret; 3721 } 3722 3723 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3724 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3725 int ul_abort) 3726 { 3727 struct scsi_qla_host *vha; 3728 unsigned long flags = 0; 3729 int rc; 3730 3731 /* why use different vha? NPIV */ 3732 if (cmd) 3733 vha = cmd->vha; 3734 else 3735 vha = qpair->vha; 3736 3737 if (ha_locked) { 3738 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3739 if (rc == -ENOMEM) 3740 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3741 goto done; 3742 } 3743 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3744 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3745 if (rc == -ENOMEM) 3746 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3747 3748 done: 3749 if (cmd && !ul_abort && !cmd->aborted) { 3750 if (cmd->sg_mapped) 3751 qlt_unmap_sg(vha, cmd); 3752 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3753 } 3754 3755 if (!ha_locked) 3756 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3757 3758 return; 3759 } 3760 3761 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3762 { 3763 struct list_head free_list; 3764 struct qla_tgt_cmd *cmd, *tcmd; 3765 3766 vha->hw->tgt.leak_exchg_thresh_hold = 3767 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3768 3769 cmd = tcmd = NULL; 3770 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3771 INIT_LIST_HEAD(&free_list); 3772 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3773 3774 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3775 list_del(&cmd->cmd_list); 3776 /* This cmd was never sent to TCM. There is no need 3777 * to schedule free or call free_cmd 3778 */ 3779 qlt_free_cmd(cmd); 3780 vha->hw->tgt.num_qfull_cmds_alloc--; 3781 } 3782 } 3783 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3784 } 3785 3786 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3787 { 3788 uint32_t total_leaked; 3789 3790 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3791 3792 if (vha->hw->tgt.leak_exchg_thresh_hold && 3793 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3794 3795 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3796 "Chip reset due to exchange starvation: %d/%d.\n", 3797 total_leaked, vha->hw->cur_fw_xcb_count); 3798 3799 if (IS_P3P_TYPE(vha->hw)) 3800 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3801 else 3802 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3803 qla2xxx_wake_dpc(vha); 3804 } 3805 3806 } 3807 3808 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3809 { 3810 struct qla_tgt *tgt = cmd->tgt; 3811 struct scsi_qla_host *vha = tgt->vha; 3812 struct se_cmd *se_cmd = &cmd->se_cmd; 3813 unsigned long flags; 3814 3815 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3816 "qla_target(%d): terminating exchange for aborted cmd=%p " 3817 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3818 se_cmd->tag); 3819 3820 spin_lock_irqsave(&cmd->cmd_lock, flags); 3821 if (cmd->aborted) { 3822 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3823 /* 3824 * It's normal to see 2 calls in this path: 3825 * 1) XFER Rdy completion + CMD_T_ABORT 3826 * 2) TCM TMR - drain_state_list 3827 */ 3828 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3829 "multiple abort. %p transport_state %x, t_state %x, " 3830 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3831 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3832 return -EIO; 3833 } 3834 cmd->aborted = 1; 3835 cmd->trc_flags |= TRC_ABORT; 3836 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3837 3838 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3839 return 0; 3840 } 3841 EXPORT_SYMBOL(qlt_abort_cmd); 3842 3843 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3844 { 3845 struct fc_port *sess = cmd->sess; 3846 3847 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3848 "%s: se_cmd[%p] ox_id %04x\n", 3849 __func__, &cmd->se_cmd, 3850 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3851 3852 BUG_ON(cmd->cmd_in_wq); 3853 3854 if (!cmd->q_full) 3855 qlt_decr_num_pend_cmds(cmd->vha); 3856 3857 BUG_ON(cmd->sg_mapped); 3858 cmd->jiffies_at_free = get_jiffies_64(); 3859 3860 if (!sess || !sess->se_sess) { 3861 WARN_ON(1); 3862 return; 3863 } 3864 cmd->jiffies_at_free = get_jiffies_64(); 3865 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3866 } 3867 EXPORT_SYMBOL(qlt_free_cmd); 3868 3869 /* 3870 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3871 */ 3872 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3873 struct qla_tgt_cmd *cmd, uint32_t status) 3874 { 3875 int term = 0; 3876 struct scsi_qla_host *vha = qpair->vha; 3877 3878 if (cmd->se_cmd.prot_op) 3879 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3880 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3881 "se_cmd=%p tag[%x] op %#x/%s", 3882 cmd->lba, cmd->lba, 3883 cmd->num_blks, &cmd->se_cmd, 3884 cmd->atio.u.isp24.exchange_addr, 3885 cmd->se_cmd.prot_op, 3886 prot_op_str(cmd->se_cmd.prot_op)); 3887 3888 if (ctio != NULL) { 3889 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3890 3891 term = !(c->flags & 3892 cpu_to_le16(OF_TERM_EXCH)); 3893 } else 3894 term = 1; 3895 3896 if (term) 3897 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3898 3899 return term; 3900 } 3901 3902 3903 /* ha->hardware_lock supposed to be held on entry */ 3904 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3905 struct rsp_que *rsp, uint32_t handle, void *ctio) 3906 { 3907 void *cmd = NULL; 3908 struct req_que *req; 3909 int qid = GET_QID(handle); 3910 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3911 3912 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3913 return NULL; 3914 3915 if (qid == rsp->req->id) { 3916 req = rsp->req; 3917 } else if (vha->hw->req_q_map[qid]) { 3918 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3919 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3920 vha->vp_idx, rsp->id, handle); 3921 req = vha->hw->req_q_map[qid]; 3922 } else { 3923 return NULL; 3924 } 3925 3926 h &= QLA_CMD_HANDLE_MASK; 3927 3928 if (h != QLA_TGT_NULL_HANDLE) { 3929 if (unlikely(h >= req->num_outstanding_cmds)) { 3930 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3931 "qla_target(%d): Wrong handle %x received\n", 3932 vha->vp_idx, handle); 3933 return NULL; 3934 } 3935 3936 cmd = req->outstanding_cmds[h]; 3937 if (unlikely(cmd == NULL)) { 3938 ql_dbg(ql_dbg_async, vha, 0xe053, 3939 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3940 vha->vp_idx, handle, req->id, rsp->id); 3941 return NULL; 3942 } 3943 req->outstanding_cmds[h] = NULL; 3944 } else if (ctio != NULL) { 3945 /* We can't get loop ID from CTIO7 */ 3946 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3947 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3948 "support NULL handles\n", vha->vp_idx); 3949 return NULL; 3950 } 3951 3952 return cmd; 3953 } 3954 3955 /* 3956 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3957 */ 3958 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3959 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3960 { 3961 struct qla_hw_data *ha = vha->hw; 3962 struct se_cmd *se_cmd; 3963 struct qla_tgt_cmd *cmd; 3964 struct qla_qpair *qpair = rsp->qpair; 3965 3966 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3967 /* That could happen only in case of an error/reset/abort */ 3968 if (status != CTIO_SUCCESS) { 3969 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3970 "Intermediate CTIO received" 3971 " (status %x)\n", status); 3972 } 3973 return; 3974 } 3975 3976 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3977 if (cmd == NULL) 3978 return; 3979 3980 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3981 cmd->sess) { 3982 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 3983 (struct ctio7_from_24xx *)ctio); 3984 } 3985 3986 se_cmd = &cmd->se_cmd; 3987 cmd->cmd_sent_to_fw = 0; 3988 3989 qlt_unmap_sg(vha, cmd); 3990 3991 if (unlikely(status != CTIO_SUCCESS)) { 3992 switch (status & 0xFFFF) { 3993 case CTIO_INVALID_RX_ID: 3994 if (printk_ratelimit()) 3995 dev_info(&vha->hw->pdev->dev, 3996 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3997 vha->vp_idx, cmd->atio.u.isp24.attr, 3998 ((cmd->ctio_flags >> 9) & 0xf), 3999 cmd->ctio_flags); 4000 4001 break; 4002 case CTIO_LIP_RESET: 4003 case CTIO_TARGET_RESET: 4004 case CTIO_ABORTED: 4005 /* driver request abort via Terminate exchange */ 4006 case CTIO_TIMEOUT: 4007 /* They are OK */ 4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4009 "qla_target(%d): CTIO with " 4010 "status %#x received, state %x, se_cmd %p, " 4011 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4012 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4013 status, cmd->state, se_cmd); 4014 break; 4015 4016 case CTIO_PORT_LOGGED_OUT: 4017 case CTIO_PORT_UNAVAILABLE: 4018 { 4019 int logged_out = 4020 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4021 4022 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4023 "qla_target(%d): CTIO with %s status %x " 4024 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4025 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4026 status, cmd->state, se_cmd); 4027 4028 if (logged_out && cmd->sess) { 4029 /* 4030 * Session is already logged out, but we need 4031 * to notify initiator, who's not aware of this 4032 */ 4033 cmd->sess->send_els_logo = 1; 4034 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4035 "%s %d %8phC post del sess\n", 4036 __func__, __LINE__, cmd->sess->port_name); 4037 4038 qlt_schedule_sess_for_deletion(cmd->sess); 4039 } 4040 break; 4041 } 4042 case CTIO_DIF_ERROR: { 4043 struct ctio_crc_from_fw *crc = 4044 (struct ctio_crc_from_fw *)ctio; 4045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4046 "qla_target(%d): CTIO with DIF_ERROR status %x " 4047 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4048 "expect_dif[0x%llx]\n", 4049 vha->vp_idx, status, cmd->state, se_cmd, 4050 *((u64 *)&crc->actual_dif[0]), 4051 *((u64 *)&crc->expected_dif[0])); 4052 4053 qlt_handle_dif_error(qpair, cmd, ctio); 4054 return; 4055 } 4056 4057 case CTIO_FAST_AUTH_ERR: 4058 case CTIO_FAST_INCOMP_PAD_LEN: 4059 case CTIO_FAST_INVALID_REQ: 4060 case CTIO_FAST_SPI_ERR: 4061 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4062 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4063 vha->vp_idx, status, cmd->state, se_cmd); 4064 break; 4065 4066 default: 4067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4068 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4069 vha->vp_idx, status, cmd->state, se_cmd); 4070 break; 4071 } 4072 4073 4074 /* "cmd->aborted" means 4075 * cmd is already aborted/terminated, we don't 4076 * need to terminate again. The exchange is already 4077 * cleaned up/freed at FW level. Just cleanup at driver 4078 * level. 4079 */ 4080 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4081 (!cmd->aborted)) { 4082 cmd->trc_flags |= TRC_CTIO_ERR; 4083 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4084 return; 4085 } 4086 } 4087 4088 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4089 cmd->trc_flags |= TRC_CTIO_DONE; 4090 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4091 cmd->state = QLA_TGT_STATE_DATA_IN; 4092 4093 if (status == CTIO_SUCCESS) 4094 cmd->write_data_transferred = 1; 4095 4096 ha->tgt.tgt_ops->handle_data(cmd); 4097 return; 4098 } else if (cmd->aborted) { 4099 cmd->trc_flags |= TRC_CTIO_ABORTED; 4100 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4101 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4102 } else { 4103 cmd->trc_flags |= TRC_CTIO_STRANGE; 4104 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4105 "qla_target(%d): A command in state (%d) should " 4106 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4107 } 4108 4109 if (unlikely(status != CTIO_SUCCESS) && 4110 !cmd->aborted) { 4111 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4112 dump_stack(); 4113 } 4114 4115 ha->tgt.tgt_ops->free_cmd(cmd); 4116 } 4117 4118 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4119 uint8_t task_codes) 4120 { 4121 int fcp_task_attr; 4122 4123 switch (task_codes) { 4124 case ATIO_SIMPLE_QUEUE: 4125 fcp_task_attr = TCM_SIMPLE_TAG; 4126 break; 4127 case ATIO_HEAD_OF_QUEUE: 4128 fcp_task_attr = TCM_HEAD_TAG; 4129 break; 4130 case ATIO_ORDERED_QUEUE: 4131 fcp_task_attr = TCM_ORDERED_TAG; 4132 break; 4133 case ATIO_ACA_QUEUE: 4134 fcp_task_attr = TCM_ACA_TAG; 4135 break; 4136 case ATIO_UNTAGGED: 4137 fcp_task_attr = TCM_SIMPLE_TAG; 4138 break; 4139 default: 4140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4141 "qla_target: unknown task code %x, use ORDERED instead\n", 4142 task_codes); 4143 fcp_task_attr = TCM_ORDERED_TAG; 4144 break; 4145 } 4146 4147 return fcp_task_attr; 4148 } 4149 4150 /* 4151 * Process context for I/O path into tcm_qla2xxx code 4152 */ 4153 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4154 { 4155 scsi_qla_host_t *vha = cmd->vha; 4156 struct qla_hw_data *ha = vha->hw; 4157 struct fc_port *sess = cmd->sess; 4158 struct atio_from_isp *atio = &cmd->atio; 4159 unsigned char *cdb; 4160 unsigned long flags; 4161 uint32_t data_length; 4162 int ret, fcp_task_attr, data_dir, bidi = 0; 4163 struct qla_qpair *qpair = cmd->qpair; 4164 4165 cmd->cmd_in_wq = 0; 4166 cmd->trc_flags |= TRC_DO_WORK; 4167 4168 if (cmd->aborted) { 4169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4170 "cmd with tag %u is aborted\n", 4171 cmd->atio.u.isp24.exchange_addr); 4172 goto out_term; 4173 } 4174 4175 spin_lock_init(&cmd->cmd_lock); 4176 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4177 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4178 4179 if (atio->u.isp24.fcp_cmnd.rddata && 4180 atio->u.isp24.fcp_cmnd.wrdata) { 4181 bidi = 1; 4182 data_dir = DMA_TO_DEVICE; 4183 } else if (atio->u.isp24.fcp_cmnd.rddata) 4184 data_dir = DMA_FROM_DEVICE; 4185 else if (atio->u.isp24.fcp_cmnd.wrdata) 4186 data_dir = DMA_TO_DEVICE; 4187 else 4188 data_dir = DMA_NONE; 4189 4190 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4191 atio->u.isp24.fcp_cmnd.task_attr); 4192 data_length = get_datalen_for_atio(atio); 4193 4194 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4195 fcp_task_attr, data_dir, bidi); 4196 if (ret != 0) 4197 goto out_term; 4198 /* 4199 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4200 */ 4201 ha->tgt.tgt_ops->put_sess(sess); 4202 return; 4203 4204 out_term: 4205 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4206 /* 4207 * cmd has not sent to target yet, so pass NULL as the second 4208 * argument to qlt_send_term_exchange() and free the memory here. 4209 */ 4210 cmd->trc_flags |= TRC_DO_WORK_ERR; 4211 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4212 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4213 4214 qlt_decr_num_pend_cmds(vha); 4215 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4216 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4217 4218 ha->tgt.tgt_ops->put_sess(sess); 4219 } 4220 4221 static void qlt_do_work(struct work_struct *work) 4222 { 4223 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4224 scsi_qla_host_t *vha = cmd->vha; 4225 unsigned long flags; 4226 4227 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4228 list_del(&cmd->cmd_list); 4229 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4230 4231 __qlt_do_work(cmd); 4232 } 4233 4234 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4235 { 4236 unsigned long flags; 4237 struct qla_hw_data *ha = vha->hw; 4238 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4239 void *node; 4240 u64 key = 0; 4241 4242 ql_log(ql_log_info, vha, 0x706c, 4243 "User update Number of Active Qpairs %d\n", 4244 ha->tgt.num_act_qpairs); 4245 4246 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4247 4248 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4249 btree_remove64(&tgt->lun_qpair_map, key); 4250 4251 ha->base_qpair->lun_cnt = 0; 4252 for (key = 0; key < ha->max_qpairs; key++) 4253 if (ha->queue_pair_map[key]) 4254 ha->queue_pair_map[key]->lun_cnt = 0; 4255 4256 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4257 } 4258 4259 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4260 struct qla_tgt_cmd *cmd) 4261 { 4262 struct qla_qpair *qpair, *qp; 4263 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4264 struct qla_qpair_hint *h; 4265 4266 if (vha->flags.qpairs_available) { 4267 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4268 if (unlikely(!h)) { 4269 /* spread lun to qpair ratio evently */ 4270 int lcnt = 0, rc; 4271 struct scsi_qla_host *base_vha = 4272 pci_get_drvdata(vha->hw->pdev); 4273 4274 qpair = vha->hw->base_qpair; 4275 if (qpair->lun_cnt == 0) { 4276 qpair->lun_cnt++; 4277 h = qla_qpair_to_hint(tgt, qpair); 4278 BUG_ON(!h); 4279 rc = btree_insert64(&tgt->lun_qpair_map, 4280 cmd->unpacked_lun, h, GFP_ATOMIC); 4281 if (rc) { 4282 qpair->lun_cnt--; 4283 ql_log(ql_log_info, vha, 0xd037, 4284 "Unable to insert lun %llx into lun_qpair_map\n", 4285 cmd->unpacked_lun); 4286 } 4287 goto out; 4288 } else { 4289 lcnt = qpair->lun_cnt; 4290 } 4291 4292 h = NULL; 4293 list_for_each_entry(qp, &base_vha->qp_list, 4294 qp_list_elem) { 4295 if (qp->lun_cnt == 0) { 4296 qp->lun_cnt++; 4297 h = qla_qpair_to_hint(tgt, qp); 4298 BUG_ON(!h); 4299 rc = btree_insert64(&tgt->lun_qpair_map, 4300 cmd->unpacked_lun, h, GFP_ATOMIC); 4301 if (rc) { 4302 qp->lun_cnt--; 4303 ql_log(ql_log_info, vha, 0xd038, 4304 "Unable to insert lun %llx into lun_qpair_map\n", 4305 cmd->unpacked_lun); 4306 } 4307 qpair = qp; 4308 goto out; 4309 } else { 4310 if (qp->lun_cnt < lcnt) { 4311 lcnt = qp->lun_cnt; 4312 qpair = qp; 4313 continue; 4314 } 4315 } 4316 } 4317 BUG_ON(!qpair); 4318 qpair->lun_cnt++; 4319 h = qla_qpair_to_hint(tgt, qpair); 4320 BUG_ON(!h); 4321 rc = btree_insert64(&tgt->lun_qpair_map, 4322 cmd->unpacked_lun, h, GFP_ATOMIC); 4323 if (rc) { 4324 qpair->lun_cnt--; 4325 ql_log(ql_log_info, vha, 0xd039, 4326 "Unable to insert lun %llx into lun_qpair_map\n", 4327 cmd->unpacked_lun); 4328 } 4329 } 4330 } else { 4331 h = &tgt->qphints[0]; 4332 } 4333 out: 4334 cmd->qpair = h->qpair; 4335 cmd->se_cmd.cpuid = h->cpuid; 4336 } 4337 4338 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4339 struct fc_port *sess, 4340 struct atio_from_isp *atio) 4341 { 4342 struct qla_tgt_cmd *cmd; 4343 4344 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4345 if (!cmd) 4346 return NULL; 4347 4348 cmd->cmd_type = TYPE_TGT_CMD; 4349 memcpy(&cmd->atio, atio, sizeof(*atio)); 4350 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4351 cmd->state = QLA_TGT_STATE_NEW; 4352 cmd->tgt = vha->vha_tgt.qla_tgt; 4353 qlt_incr_num_pend_cmds(vha); 4354 cmd->vha = vha; 4355 cmd->sess = sess; 4356 cmd->loop_id = sess->loop_id; 4357 cmd->conf_compl_supported = sess->conf_compl_supported; 4358 4359 cmd->trc_flags = 0; 4360 cmd->jiffies_at_alloc = get_jiffies_64(); 4361 4362 cmd->unpacked_lun = scsilun_to_int( 4363 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4364 qlt_assign_qpair(vha, cmd); 4365 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4366 cmd->vp_idx = vha->vp_idx; 4367 cmd->edif = sess->edif.enable; 4368 4369 return cmd; 4370 } 4371 4372 /* ha->hardware_lock supposed to be held on entry */ 4373 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4374 struct atio_from_isp *atio) 4375 { 4376 struct qla_hw_data *ha = vha->hw; 4377 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4378 struct fc_port *sess; 4379 struct qla_tgt_cmd *cmd; 4380 unsigned long flags; 4381 port_id_t id; 4382 4383 if (unlikely(tgt->tgt_stop)) { 4384 ql_dbg(ql_dbg_io, vha, 0x3061, 4385 "New command while device %p is shutting down\n", tgt); 4386 return -ENODEV; 4387 } 4388 4389 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4390 if (IS_SW_RESV_ADDR(id)) 4391 return -EBUSY; 4392 4393 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4394 if (unlikely(!sess)) 4395 return -EFAULT; 4396 4397 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4398 * session deletion, but it's still in sess_del_work wq */ 4399 if (sess->deleted) { 4400 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4401 "New command while old session %p is being deleted\n", 4402 sess); 4403 return -EFAULT; 4404 } 4405 4406 /* 4407 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4408 */ 4409 if (!kref_get_unless_zero(&sess->sess_kref)) { 4410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4411 "%s: kref_get fail, %8phC oxid %x \n", 4412 __func__, sess->port_name, 4413 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4414 return -EFAULT; 4415 } 4416 4417 cmd = qlt_get_tag(vha, sess, atio); 4418 if (!cmd) { 4419 ql_dbg(ql_dbg_io, vha, 0x3062, 4420 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4421 ha->tgt.tgt_ops->put_sess(sess); 4422 return -EBUSY; 4423 } 4424 4425 cmd->cmd_in_wq = 1; 4426 cmd->trc_flags |= TRC_NEW_CMD; 4427 4428 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4429 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4430 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4431 4432 INIT_WORK(&cmd->work, qlt_do_work); 4433 if (vha->flags.qpairs_available) { 4434 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4435 } else if (ha->msix_count) { 4436 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4437 queue_work_on(smp_processor_id(), qla_tgt_wq, 4438 &cmd->work); 4439 else 4440 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4441 &cmd->work); 4442 } else { 4443 queue_work(qla_tgt_wq, &cmd->work); 4444 } 4445 4446 return 0; 4447 } 4448 4449 /* ha->hardware_lock supposed to be held on entry */ 4450 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4451 int fn, void *iocb, int flags) 4452 { 4453 struct scsi_qla_host *vha = sess->vha; 4454 struct qla_hw_data *ha = vha->hw; 4455 struct qla_tgt_mgmt_cmd *mcmd; 4456 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4457 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4458 4459 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4460 if (!mcmd) { 4461 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4462 "qla_target(%d): Allocation of management " 4463 "command failed, some commands and their data could " 4464 "leak\n", vha->vp_idx); 4465 return -ENOMEM; 4466 } 4467 memset(mcmd, 0, sizeof(*mcmd)); 4468 mcmd->sess = sess; 4469 4470 if (iocb) { 4471 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4472 sizeof(mcmd->orig_iocb.imm_ntfy)); 4473 } 4474 mcmd->tmr_func = fn; 4475 mcmd->flags = flags; 4476 mcmd->reset_count = ha->base_qpair->chip_reset; 4477 mcmd->qpair = h->qpair; 4478 mcmd->vha = vha; 4479 mcmd->se_cmd.cpuid = h->cpuid; 4480 mcmd->unpacked_lun = lun; 4481 4482 switch (fn) { 4483 case QLA_TGT_LUN_RESET: 4484 case QLA_TGT_CLEAR_TS: 4485 case QLA_TGT_ABORT_TS: 4486 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4487 fallthrough; 4488 case QLA_TGT_CLEAR_ACA: 4489 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4490 mcmd->qpair = h->qpair; 4491 mcmd->se_cmd.cpuid = h->cpuid; 4492 break; 4493 4494 case QLA_TGT_TARGET_RESET: 4495 case QLA_TGT_NEXUS_LOSS_SESS: 4496 case QLA_TGT_NEXUS_LOSS: 4497 case QLA_TGT_ABORT_ALL: 4498 default: 4499 /* no-op */ 4500 break; 4501 } 4502 4503 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4504 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4505 &mcmd->work); 4506 4507 return 0; 4508 } 4509 4510 /* ha->hardware_lock supposed to be held on entry */ 4511 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4512 { 4513 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4514 struct qla_hw_data *ha = vha->hw; 4515 struct fc_port *sess; 4516 u64 unpacked_lun; 4517 int fn; 4518 unsigned long flags; 4519 4520 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4521 4522 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4523 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4524 a->u.isp24.fcp_hdr.s_id); 4525 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4526 4527 unpacked_lun = 4528 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4529 4530 if (sess == NULL || sess->deleted) 4531 return -EFAULT; 4532 4533 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4534 } 4535 4536 /* ha->hardware_lock supposed to be held on entry */ 4537 static int __qlt_abort_task(struct scsi_qla_host *vha, 4538 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4539 { 4540 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4541 struct qla_hw_data *ha = vha->hw; 4542 struct qla_tgt_mgmt_cmd *mcmd; 4543 u64 unpacked_lun; 4544 int rc; 4545 4546 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4547 if (mcmd == NULL) { 4548 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4549 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4550 vha->vp_idx, __func__); 4551 return -ENOMEM; 4552 } 4553 memset(mcmd, 0, sizeof(*mcmd)); 4554 4555 mcmd->sess = sess; 4556 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4557 sizeof(mcmd->orig_iocb.imm_ntfy)); 4558 4559 unpacked_lun = 4560 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4561 mcmd->reset_count = ha->base_qpair->chip_reset; 4562 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4563 mcmd->qpair = ha->base_qpair; 4564 4565 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4566 le16_to_cpu(iocb->u.isp2x.seq_id)); 4567 if (rc != 0) { 4568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4569 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4570 vha->vp_idx, rc); 4571 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4572 return -EFAULT; 4573 } 4574 4575 return 0; 4576 } 4577 4578 /* ha->hardware_lock supposed to be held on entry */ 4579 static int qlt_abort_task(struct scsi_qla_host *vha, 4580 struct imm_ntfy_from_isp *iocb) 4581 { 4582 struct qla_hw_data *ha = vha->hw; 4583 struct fc_port *sess; 4584 int loop_id; 4585 unsigned long flags; 4586 4587 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4588 4589 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4590 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4591 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4592 4593 if (sess == NULL) { 4594 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4595 "qla_target(%d): task abort for unexisting " 4596 "session\n", vha->vp_idx); 4597 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4598 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4599 } 4600 4601 return __qlt_abort_task(vha, iocb, sess); 4602 } 4603 4604 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4605 { 4606 if (rc != MBS_COMMAND_COMPLETE) { 4607 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4608 "%s: se_sess %p / sess %p from" 4609 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4610 " LOGO failed: %#x\n", 4611 __func__, 4612 fcport->se_sess, 4613 fcport, 4614 fcport->port_name, fcport->loop_id, 4615 fcport->d_id.b.domain, fcport->d_id.b.area, 4616 fcport->d_id.b.al_pa, rc); 4617 } 4618 4619 fcport->logout_completed = 1; 4620 } 4621 4622 /* 4623 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4624 * 4625 * Schedules sessions with matching port_id/loop_id but different wwn for 4626 * deletion. Returns existing session with matching wwn if present. 4627 * Null otherwise. 4628 */ 4629 struct fc_port * 4630 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4631 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4632 { 4633 struct fc_port *sess = NULL, *other_sess; 4634 uint64_t other_wwn; 4635 4636 *conflict_sess = NULL; 4637 4638 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4639 4640 other_wwn = wwn_to_u64(other_sess->port_name); 4641 4642 if (wwn == other_wwn) { 4643 WARN_ON(sess); 4644 sess = other_sess; 4645 continue; 4646 } 4647 4648 /* find other sess with nport_id collision */ 4649 if (port_id.b24 == other_sess->d_id.b24) { 4650 if (loop_id != other_sess->loop_id) { 4651 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4652 "Invalidating sess %p loop_id %d wwn %llx.\n", 4653 other_sess, other_sess->loop_id, other_wwn); 4654 4655 /* 4656 * logout_on_delete is set by default, but another 4657 * session that has the same s_id/loop_id combo 4658 * might have cleared it when requested this session 4659 * deletion, so don't touch it 4660 */ 4661 qlt_schedule_sess_for_deletion(other_sess); 4662 } else { 4663 /* 4664 * Another wwn used to have our s_id/loop_id 4665 * kill the session, but don't free the loop_id 4666 */ 4667 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4668 "Invalidating sess %p loop_id %d wwn %llx.\n", 4669 other_sess, other_sess->loop_id, other_wwn); 4670 4671 other_sess->keep_nport_handle = 1; 4672 if (other_sess->disc_state != DSC_DELETED) 4673 *conflict_sess = other_sess; 4674 qlt_schedule_sess_for_deletion(other_sess); 4675 } 4676 continue; 4677 } 4678 4679 /* find other sess with nport handle collision */ 4680 if ((loop_id == other_sess->loop_id) && 4681 (loop_id != FC_NO_LOOP_ID)) { 4682 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4683 "Invalidating sess %p loop_id %d wwn %llx.\n", 4684 other_sess, other_sess->loop_id, other_wwn); 4685 4686 /* Same loop_id but different s_id 4687 * Ok to kill and logout */ 4688 qlt_schedule_sess_for_deletion(other_sess); 4689 } 4690 } 4691 4692 return sess; 4693 } 4694 4695 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4696 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4697 { 4698 struct qla_tgt_sess_op *op; 4699 struct qla_tgt_cmd *cmd; 4700 uint32_t key; 4701 int count = 0; 4702 unsigned long flags; 4703 4704 key = (((u32)s_id->b.domain << 16) | 4705 ((u32)s_id->b.area << 8) | 4706 ((u32)s_id->b.al_pa)); 4707 4708 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4709 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4710 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4711 4712 if (op_key == key) { 4713 op->aborted = true; 4714 count++; 4715 } 4716 } 4717 4718 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4719 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4720 4721 if (cmd_key == key) { 4722 cmd->aborted = 1; 4723 count++; 4724 } 4725 } 4726 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4727 4728 return count; 4729 } 4730 4731 static int qlt_handle_login(struct scsi_qla_host *vha, 4732 struct imm_ntfy_from_isp *iocb) 4733 { 4734 struct fc_port *sess = NULL, *conflict_sess = NULL; 4735 uint64_t wwn; 4736 port_id_t port_id; 4737 uint16_t loop_id, wd3_lo; 4738 int res = 0; 4739 struct qlt_plogi_ack_t *pla; 4740 unsigned long flags; 4741 4742 lockdep_assert_held(&vha->hw->hardware_lock); 4743 4744 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4745 4746 port_id.b.domain = iocb->u.isp24.port_id[2]; 4747 port_id.b.area = iocb->u.isp24.port_id[1]; 4748 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4749 port_id.b.rsvd_1 = 0; 4750 4751 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4752 4753 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4754 abort_cmds_for_s_id(vha, &port_id); 4755 4756 if (wwn) { 4757 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4758 sess = qlt_find_sess_invalidate_other(vha, wwn, 4759 port_id, loop_id, &conflict_sess); 4760 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4761 } else { 4762 ql_dbg(ql_dbg_disc, vha, 0xffff, 4763 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4764 __func__, __LINE__, loop_id, port_id.b24); 4765 qlt_send_term_imm_notif(vha, iocb, 1); 4766 goto out; 4767 } 4768 4769 if (IS_SW_RESV_ADDR(port_id)) { 4770 res = 1; 4771 goto out; 4772 } 4773 4774 if (vha->hw->flags.edif_enabled && 4775 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4776 iocb->u.isp24.status_subcode == ELS_PLOGI && 4777 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4778 ql_dbg(ql_dbg_disc, vha, 0xffff, 4779 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4780 __func__, __LINE__, loop_id, port_id.b24); 4781 qlt_send_term_imm_notif(vha, iocb, 1); 4782 goto out; 4783 } 4784 4785 if (vha->hw->flags.edif_enabled) { 4786 if (DBELL_INACTIVE(vha)) { 4787 ql_dbg(ql_dbg_disc, vha, 0xffff, 4788 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4789 __func__, __LINE__, loop_id, port_id.b24); 4790 qlt_send_term_imm_notif(vha, iocb, 1); 4791 goto out; 4792 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4793 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4794 ql_dbg(ql_dbg_disc, vha, 0xffff, 4795 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4796 __func__, __LINE__, loop_id, port_id.b24); 4797 qlt_send_term_imm_notif(vha, iocb, 1); 4798 goto out; 4799 } 4800 } 4801 4802 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4803 if (!pla) { 4804 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4805 "%s %d %8phC Term INOT due to mem alloc fail", 4806 __func__, __LINE__, 4807 iocb->u.isp24.port_name); 4808 qlt_send_term_imm_notif(vha, iocb, 1); 4809 goto out; 4810 } 4811 4812 if (conflict_sess) { 4813 conflict_sess->login_gen++; 4814 qlt_plogi_ack_link(vha, pla, conflict_sess, 4815 QLT_PLOGI_LINK_CONFLICT); 4816 } 4817 4818 if (!sess) { 4819 pla->ref_count++; 4820 ql_dbg(ql_dbg_disc, vha, 0xffff, 4821 "%s %d %8phC post new sess\n", 4822 __func__, __LINE__, iocb->u.isp24.port_name); 4823 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4824 qla24xx_post_newsess_work(vha, &port_id, 4825 iocb->u.isp24.port_name, 4826 iocb->u.isp24.u.plogi.node_name, 4827 pla, 0); 4828 else 4829 qla24xx_post_newsess_work(vha, &port_id, 4830 iocb->u.isp24.port_name, NULL, 4831 pla, 0); 4832 4833 goto out; 4834 } 4835 4836 if (sess->disc_state == DSC_UPD_FCPORT) { 4837 u16 sec; 4838 4839 /* 4840 * Remote port registration is still going on from 4841 * previous login. Allow it to finish before we 4842 * accept the new login. 4843 */ 4844 sess->next_disc_state = DSC_DELETE_PEND; 4845 sec = jiffies_to_msecs(jiffies - 4846 sess->jiffies_at_registration) / 1000; 4847 if (sess->sec_since_registration < sec && sec && 4848 !(sec % 5)) { 4849 sess->sec_since_registration = sec; 4850 ql_dbg(ql_dbg_disc, vha, 0xffff, 4851 "%s %8phC - Slow Rport registration (%d Sec)\n", 4852 __func__, sess->port_name, sec); 4853 } 4854 4855 if (!conflict_sess) { 4856 list_del(&pla->list); 4857 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4858 } 4859 4860 qlt_send_term_imm_notif(vha, iocb, 1); 4861 goto out; 4862 } 4863 4864 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4865 sess->d_id = port_id; 4866 sess->login_gen++; 4867 sess->loop_id = loop_id; 4868 4869 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4870 /* remote port has assigned Port ID */ 4871 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4872 vha->d_id = sess->d_id; 4873 4874 ql_dbg(ql_dbg_disc, vha, 0xffff, 4875 "%s %8phC - send port online\n", 4876 __func__, sess->port_name); 4877 4878 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4879 sess->d_id.b24); 4880 } 4881 4882 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4883 sess->fw_login_state = DSC_LS_PRLI_PEND; 4884 sess->local = 0; 4885 sess->loop_id = loop_id; 4886 sess->d_id = port_id; 4887 sess->fw_login_state = DSC_LS_PRLI_PEND; 4888 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4889 4890 if (wd3_lo & BIT_7) 4891 sess->conf_compl_supported = 1; 4892 4893 if ((wd3_lo & BIT_4) == 0) 4894 sess->port_type = FCT_INITIATOR; 4895 else 4896 sess->port_type = FCT_TARGET; 4897 4898 } else 4899 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4900 4901 4902 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4903 "%s %d %8phC DS %d\n", 4904 __func__, __LINE__, sess->port_name, sess->disc_state); 4905 4906 switch (sess->disc_state) { 4907 case DSC_DELETED: 4908 case DSC_LOGIN_PEND: 4909 qlt_plogi_ack_unref(vha, pla); 4910 break; 4911 4912 default: 4913 /* 4914 * Under normal circumstances we want to release nport handle 4915 * during LOGO process to avoid nport handle leaks inside FW. 4916 * The exception is when LOGO is done while another PLOGI with 4917 * the same nport handle is waiting as might be the case here. 4918 * Note: there is always a possibily of a race where session 4919 * deletion has already started for other reasons (e.g. ACL 4920 * removal) and now PLOGI arrives: 4921 * 1. if PLOGI arrived in FW after nport handle has been freed, 4922 * FW must have assigned this PLOGI a new/same handle and we 4923 * can proceed ACK'ing it as usual when session deletion 4924 * completes. 4925 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4926 * bit reached it, the handle has now been released. We'll 4927 * get an error when we ACK this PLOGI. Nothing will be sent 4928 * back to initiator. Initiator should eventually retry 4929 * PLOGI and situation will correct itself. 4930 */ 4931 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4932 (sess->d_id.b24 == port_id.b24)); 4933 4934 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4935 "%s %d %8phC post del sess\n", 4936 __func__, __LINE__, sess->port_name); 4937 4938 4939 qlt_schedule_sess_for_deletion(sess); 4940 break; 4941 } 4942 out: 4943 return res; 4944 } 4945 4946 /* 4947 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4948 */ 4949 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4950 struct imm_ntfy_from_isp *iocb) 4951 { 4952 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4953 struct qla_hw_data *ha = vha->hw; 4954 struct fc_port *sess = NULL, *conflict_sess = NULL; 4955 uint64_t wwn; 4956 port_id_t port_id; 4957 uint16_t loop_id; 4958 uint16_t wd3_lo; 4959 int res = 0; 4960 unsigned long flags; 4961 4962 lockdep_assert_held(&ha->hardware_lock); 4963 4964 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4965 4966 port_id.b.domain = iocb->u.isp24.port_id[2]; 4967 port_id.b.area = iocb->u.isp24.port_id[1]; 4968 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4969 port_id.b.rsvd_1 = 0; 4970 4971 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4972 4973 ql_dbg(ql_dbg_disc, vha, 0xf026, 4974 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4975 vha->vp_idx, iocb->u.isp24.port_id[2], 4976 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4977 iocb->u.isp24.status_subcode, loop_id, 4978 iocb->u.isp24.port_name); 4979 4980 /* res = 1 means ack at the end of thread 4981 * res = 0 means ack async/later. 4982 */ 4983 switch (iocb->u.isp24.status_subcode) { 4984 case ELS_PLOGI: 4985 res = qlt_handle_login(vha, iocb); 4986 break; 4987 4988 case ELS_PRLI: 4989 if (N2N_TOPO(ha)) { 4990 sess = qla2x00_find_fcport_by_wwpn(vha, 4991 iocb->u.isp24.port_name, 1); 4992 4993 if (vha->hw->flags.edif_enabled && sess && 4994 (!(sess->flags & FCF_FCSP_DEVICE) || 4995 !sess->edif.authok)) { 4996 ql_dbg(ql_dbg_disc, vha, 0xffff, 4997 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 4998 __func__, __LINE__, iocb->u.isp24.port_name); 4999 qlt_send_term_imm_notif(vha, iocb, 1); 5000 break; 5001 } 5002 5003 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5004 ql_dbg(ql_dbg_disc, vha, 0xffff, 5005 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5006 __func__, __LINE__, 5007 iocb->u.isp24.port_name); 5008 qlt_send_term_imm_notif(vha, iocb, 1); 5009 break; 5010 } 5011 5012 res = qlt_handle_login(vha, iocb); 5013 break; 5014 } 5015 5016 if (IS_SW_RESV_ADDR(port_id)) { 5017 res = 1; 5018 break; 5019 } 5020 5021 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5022 5023 if (wwn) { 5024 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5025 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5026 loop_id, &conflict_sess); 5027 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5028 } 5029 5030 if (conflict_sess) { 5031 switch (conflict_sess->disc_state) { 5032 case DSC_DELETED: 5033 case DSC_DELETE_PEND: 5034 break; 5035 default: 5036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5037 "PRLI with conflicting sess %p port %8phC\n", 5038 conflict_sess, conflict_sess->port_name); 5039 conflict_sess->fw_login_state = 5040 DSC_LS_PORT_UNAVAIL; 5041 qlt_send_term_imm_notif(vha, iocb, 1); 5042 res = 0; 5043 break; 5044 } 5045 } 5046 5047 if (sess != NULL) { 5048 bool delete = false; 5049 int sec; 5050 5051 if (vha->hw->flags.edif_enabled && sess && 5052 (!(sess->flags & FCF_FCSP_DEVICE) || 5053 !sess->edif.authok)) { 5054 ql_dbg(ql_dbg_disc, vha, 0xffff, 5055 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5056 __func__, __LINE__, iocb->u.isp24.port_name); 5057 qlt_send_term_imm_notif(vha, iocb, 1); 5058 break; 5059 } 5060 5061 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5062 switch (sess->fw_login_state) { 5063 case DSC_LS_PLOGI_PEND: 5064 case DSC_LS_PLOGI_COMP: 5065 case DSC_LS_PRLI_COMP: 5066 break; 5067 default: 5068 delete = true; 5069 break; 5070 } 5071 5072 switch (sess->disc_state) { 5073 case DSC_UPD_FCPORT: 5074 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5075 flags); 5076 5077 sec = jiffies_to_msecs(jiffies - 5078 sess->jiffies_at_registration)/1000; 5079 if (sess->sec_since_registration < sec && sec && 5080 !(sec % 5)) { 5081 sess->sec_since_registration = sec; 5082 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5083 "%s %8phC : Slow Rport registration(%d Sec)\n", 5084 __func__, sess->port_name, sec); 5085 } 5086 qlt_send_term_imm_notif(vha, iocb, 1); 5087 return 0; 5088 5089 case DSC_LOGIN_PEND: 5090 case DSC_GPDB: 5091 case DSC_LOGIN_COMPLETE: 5092 case DSC_ADISC: 5093 delete = false; 5094 break; 5095 default: 5096 break; 5097 } 5098 5099 if (delete) { 5100 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5101 flags); 5102 /* 5103 * Impatient initiator sent PRLI before last 5104 * PLOGI could finish. Will force him to re-try, 5105 * while last one finishes. 5106 */ 5107 ql_log(ql_log_warn, sess->vha, 0xf095, 5108 "sess %p PRLI received, before plogi ack.\n", 5109 sess); 5110 qlt_send_term_imm_notif(vha, iocb, 1); 5111 res = 0; 5112 break; 5113 } 5114 5115 /* 5116 * This shouldn't happen under normal circumstances, 5117 * since we have deleted the old session during PLOGI 5118 */ 5119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5120 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5121 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5122 5123 sess->local = 0; 5124 sess->loop_id = loop_id; 5125 sess->d_id = port_id; 5126 sess->fw_login_state = DSC_LS_PRLI_PEND; 5127 5128 if (wd3_lo & BIT_7) 5129 sess->conf_compl_supported = 1; 5130 5131 if ((wd3_lo & BIT_4) == 0) 5132 sess->port_type = FCT_INITIATOR; 5133 else 5134 sess->port_type = FCT_TARGET; 5135 5136 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5137 } 5138 res = 1; /* send notify ack */ 5139 5140 /* Make session global (not used in fabric mode) */ 5141 if (ha->current_topology != ISP_CFG_F) { 5142 if (sess) { 5143 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5144 "%s %d %8phC post nack\n", 5145 __func__, __LINE__, sess->port_name); 5146 qla24xx_post_nack_work(vha, sess, iocb, 5147 SRB_NACK_PRLI); 5148 res = 0; 5149 } else { 5150 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5151 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5152 qla2xxx_wake_dpc(vha); 5153 } 5154 } else { 5155 if (sess) { 5156 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5157 "%s %d %8phC post nack\n", 5158 __func__, __LINE__, sess->port_name); 5159 qla24xx_post_nack_work(vha, sess, iocb, 5160 SRB_NACK_PRLI); 5161 res = 0; 5162 } 5163 } 5164 break; 5165 5166 case ELS_TPRLO: 5167 if (le16_to_cpu(iocb->u.isp24.flags) & 5168 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5169 loop_id = 0xFFFF; 5170 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5171 res = 1; 5172 break; 5173 } 5174 fallthrough; 5175 case ELS_LOGO: 5176 case ELS_PRLO: 5177 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5178 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5179 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5180 5181 if (sess) { 5182 sess->login_gen++; 5183 sess->fw_login_state = DSC_LS_LOGO_PEND; 5184 sess->logo_ack_needed = 1; 5185 memcpy(sess->iocb, iocb, IOCB_SIZE); 5186 } 5187 5188 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5189 5190 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5191 "%s: logo %llx res %d sess %p ", 5192 __func__, wwn, res, sess); 5193 if (res == 0) { 5194 /* 5195 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5196 * for LOGO_ACK & sess delete 5197 */ 5198 BUG_ON(!sess); 5199 res = 0; 5200 } else { 5201 /* cmd did not go to upper layer. */ 5202 if (sess) { 5203 qlt_schedule_sess_for_deletion(sess); 5204 res = 0; 5205 } 5206 /* else logo will be ack */ 5207 } 5208 break; 5209 case ELS_PDISC: 5210 case ELS_ADISC: 5211 { 5212 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5213 5214 if (tgt->link_reinit_iocb_pending) { 5215 qlt_send_notify_ack(ha->base_qpair, 5216 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5217 tgt->link_reinit_iocb_pending = 0; 5218 } 5219 5220 sess = qla2x00_find_fcport_by_wwpn(vha, 5221 iocb->u.isp24.port_name, 1); 5222 if (sess) { 5223 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5224 "sess %p lid %d|%d DS %d LS %d\n", 5225 sess, sess->loop_id, loop_id, 5226 sess->disc_state, sess->fw_login_state); 5227 } 5228 5229 res = 1; /* send notify ack */ 5230 break; 5231 } 5232 5233 case ELS_FLOGI: /* should never happen */ 5234 default: 5235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5236 "qla_target(%d): Unsupported ELS command %x " 5237 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5238 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5239 break; 5240 } 5241 5242 ql_dbg(ql_dbg_disc, vha, 0xf026, 5243 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5244 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5245 5246 return res; 5247 } 5248 5249 /* 5250 * ha->hardware_lock supposed to be held on entry. 5251 * Might drop it, then reacquire. 5252 */ 5253 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5254 struct imm_ntfy_from_isp *iocb) 5255 { 5256 struct qla_hw_data *ha = vha->hw; 5257 uint32_t add_flags = 0; 5258 int send_notify_ack = 1; 5259 uint16_t status; 5260 5261 lockdep_assert_held(&ha->hardware_lock); 5262 5263 status = le16_to_cpu(iocb->u.isp2x.status); 5264 switch (status) { 5265 case IMM_NTFY_LIP_RESET: 5266 { 5267 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5268 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5269 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5270 iocb->u.isp24.status_subcode); 5271 5272 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5273 send_notify_ack = 0; 5274 break; 5275 } 5276 5277 case IMM_NTFY_LIP_LINK_REINIT: 5278 { 5279 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5280 5281 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5282 "qla_target(%d): LINK REINIT (loop %#x, " 5283 "subcode %x)\n", vha->vp_idx, 5284 le16_to_cpu(iocb->u.isp24.nport_handle), 5285 iocb->u.isp24.status_subcode); 5286 if (tgt->link_reinit_iocb_pending) { 5287 qlt_send_notify_ack(ha->base_qpair, 5288 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5289 } 5290 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5291 tgt->link_reinit_iocb_pending = 1; 5292 /* 5293 * QLogic requires to wait after LINK REINIT for possible 5294 * PDISC or ADISC ELS commands 5295 */ 5296 send_notify_ack = 0; 5297 break; 5298 } 5299 5300 case IMM_NTFY_PORT_LOGOUT: 5301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5302 "qla_target(%d): Port logout (loop " 5303 "%#x, subcode %x)\n", vha->vp_idx, 5304 le16_to_cpu(iocb->u.isp24.nport_handle), 5305 iocb->u.isp24.status_subcode); 5306 5307 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5308 send_notify_ack = 0; 5309 /* The sessions will be cleared in the callback, if needed */ 5310 break; 5311 5312 case IMM_NTFY_GLBL_TPRLO: 5313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5314 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5315 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5316 send_notify_ack = 0; 5317 /* The sessions will be cleared in the callback, if needed */ 5318 break; 5319 5320 case IMM_NTFY_PORT_CONFIG: 5321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5322 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5323 status); 5324 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5325 send_notify_ack = 0; 5326 /* The sessions will be cleared in the callback, if needed */ 5327 break; 5328 5329 case IMM_NTFY_GLBL_LOGO: 5330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5331 "qla_target(%d): Link failure detected\n", 5332 vha->vp_idx); 5333 /* I_T nexus loss */ 5334 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5335 send_notify_ack = 0; 5336 break; 5337 5338 case IMM_NTFY_IOCB_OVERFLOW: 5339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5340 "qla_target(%d): Cannot provide requested " 5341 "capability (IOCB overflowed the immediate notify " 5342 "resource count)\n", vha->vp_idx); 5343 break; 5344 5345 case IMM_NTFY_ABORT_TASK: 5346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5347 "qla_target(%d): Abort Task (S %08x I %#x -> " 5348 "L %#x)\n", vha->vp_idx, 5349 le16_to_cpu(iocb->u.isp2x.seq_id), 5350 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5351 le16_to_cpu(iocb->u.isp2x.lun)); 5352 if (qlt_abort_task(vha, iocb) == 0) 5353 send_notify_ack = 0; 5354 break; 5355 5356 case IMM_NTFY_RESOURCE: 5357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5358 "qla_target(%d): Out of resources, host %ld\n", 5359 vha->vp_idx, vha->host_no); 5360 break; 5361 5362 case IMM_NTFY_MSG_RX: 5363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5364 "qla_target(%d): Immediate notify task %x\n", 5365 vha->vp_idx, iocb->u.isp2x.task_flags); 5366 break; 5367 5368 case IMM_NTFY_ELS: 5369 if (qlt_24xx_handle_els(vha, iocb) == 0) 5370 send_notify_ack = 0; 5371 break; 5372 default: 5373 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5374 "qla_target(%d): Received unknown immediate " 5375 "notify status %x\n", vha->vp_idx, status); 5376 break; 5377 } 5378 5379 if (send_notify_ack) 5380 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5381 0, 0); 5382 } 5383 5384 /* 5385 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5386 * This function sends busy to ISP 2xxx or 24xx. 5387 */ 5388 static int __qlt_send_busy(struct qla_qpair *qpair, 5389 struct atio_from_isp *atio, uint16_t status) 5390 { 5391 struct scsi_qla_host *vha = qpair->vha; 5392 struct ctio7_to_24xx *ctio24; 5393 struct qla_hw_data *ha = vha->hw; 5394 request_t *pkt; 5395 struct fc_port *sess = NULL; 5396 unsigned long flags; 5397 u16 temp; 5398 port_id_t id; 5399 5400 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5401 5402 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5403 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5404 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5405 if (!sess) { 5406 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5407 return 0; 5408 } 5409 /* Sending marker isn't necessary, since we called from ISR */ 5410 5411 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5412 if (!pkt) { 5413 ql_dbg(ql_dbg_io, vha, 0x3063, 5414 "qla_target(%d): %s failed: unable to allocate " 5415 "request packet", vha->vp_idx, __func__); 5416 return -ENOMEM; 5417 } 5418 5419 qpair->tgt_counters.num_q_full_sent++; 5420 pkt->entry_count = 1; 5421 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5422 5423 ctio24 = (struct ctio7_to_24xx *)pkt; 5424 ctio24->entry_type = CTIO_TYPE7; 5425 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5426 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5427 ctio24->vp_index = vha->vp_idx; 5428 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5429 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5430 temp = (atio->u.isp24.attr << 9) | 5431 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5432 CTIO7_FLAGS_DONT_RET_CTIO; 5433 ctio24->u.status1.flags = cpu_to_le16(temp); 5434 /* 5435 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5436 * if the explicit conformation is used. 5437 */ 5438 ctio24->u.status1.ox_id = 5439 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5440 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5441 5442 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5443 5444 if (ctio24->u.status1.residual != 0) 5445 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5446 5447 /* Memory Barrier */ 5448 wmb(); 5449 if (qpair->reqq_start_iocbs) 5450 qpair->reqq_start_iocbs(qpair); 5451 else 5452 qla2x00_start_iocbs(vha, qpair->req); 5453 return 0; 5454 } 5455 5456 /* 5457 * This routine is used to allocate a command for either a QFull condition 5458 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5459 * out previously. 5460 */ 5461 static void 5462 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5463 struct atio_from_isp *atio, uint16_t status, int qfull) 5464 { 5465 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5466 struct qla_hw_data *ha = vha->hw; 5467 struct fc_port *sess; 5468 struct qla_tgt_cmd *cmd; 5469 unsigned long flags; 5470 5471 if (unlikely(tgt->tgt_stop)) { 5472 ql_dbg(ql_dbg_io, vha, 0x300a, 5473 "New command while device %p is shutting down\n", tgt); 5474 return; 5475 } 5476 5477 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5478 vha->hw->tgt.num_qfull_cmds_dropped++; 5479 if (vha->hw->tgt.num_qfull_cmds_dropped > 5480 vha->qla_stats.stat_max_qfull_cmds_dropped) 5481 vha->qla_stats.stat_max_qfull_cmds_dropped = 5482 vha->hw->tgt.num_qfull_cmds_dropped; 5483 5484 ql_dbg(ql_dbg_io, vha, 0x3068, 5485 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5486 vha->vp_idx, __func__, 5487 vha->hw->tgt.num_qfull_cmds_dropped); 5488 5489 qlt_chk_exch_leak_thresh_hold(vha); 5490 return; 5491 } 5492 5493 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5494 (vha, atio->u.isp24.fcp_hdr.s_id); 5495 if (!sess) 5496 return; 5497 5498 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5499 if (!cmd) { 5500 ql_dbg(ql_dbg_io, vha, 0x3009, 5501 "qla_target(%d): %s: Allocation of cmd failed\n", 5502 vha->vp_idx, __func__); 5503 5504 vha->hw->tgt.num_qfull_cmds_dropped++; 5505 if (vha->hw->tgt.num_qfull_cmds_dropped > 5506 vha->qla_stats.stat_max_qfull_cmds_dropped) 5507 vha->qla_stats.stat_max_qfull_cmds_dropped = 5508 vha->hw->tgt.num_qfull_cmds_dropped; 5509 5510 qlt_chk_exch_leak_thresh_hold(vha); 5511 return; 5512 } 5513 5514 qlt_incr_num_pend_cmds(vha); 5515 INIT_LIST_HEAD(&cmd->cmd_list); 5516 memcpy(&cmd->atio, atio, sizeof(*atio)); 5517 5518 cmd->tgt = vha->vha_tgt.qla_tgt; 5519 cmd->vha = vha; 5520 cmd->reset_count = ha->base_qpair->chip_reset; 5521 cmd->q_full = 1; 5522 cmd->qpair = ha->base_qpair; 5523 5524 if (qfull) { 5525 cmd->q_full = 1; 5526 /* NOTE: borrowing the state field to carry the status */ 5527 cmd->state = status; 5528 } else 5529 cmd->term_exchg = 1; 5530 5531 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5532 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5533 5534 vha->hw->tgt.num_qfull_cmds_alloc++; 5535 if (vha->hw->tgt.num_qfull_cmds_alloc > 5536 vha->qla_stats.stat_max_qfull_cmds_alloc) 5537 vha->qla_stats.stat_max_qfull_cmds_alloc = 5538 vha->hw->tgt.num_qfull_cmds_alloc; 5539 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5540 } 5541 5542 int 5543 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5544 { 5545 struct scsi_qla_host *vha = qpair->vha; 5546 struct qla_hw_data *ha = vha->hw; 5547 unsigned long flags; 5548 struct qla_tgt_cmd *cmd, *tcmd; 5549 struct list_head free_list, q_full_list; 5550 int rc = 0; 5551 5552 if (list_empty(&ha->tgt.q_full_list)) 5553 return 0; 5554 5555 INIT_LIST_HEAD(&free_list); 5556 INIT_LIST_HEAD(&q_full_list); 5557 5558 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5559 if (list_empty(&ha->tgt.q_full_list)) { 5560 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5561 return 0; 5562 } 5563 5564 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5565 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5566 5567 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5568 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5569 if (cmd->q_full) 5570 /* cmd->state is a borrowed field to hold status */ 5571 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5572 else if (cmd->term_exchg) 5573 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5574 5575 if (rc == -ENOMEM) 5576 break; 5577 5578 if (cmd->q_full) 5579 ql_dbg(ql_dbg_io, vha, 0x3006, 5580 "%s: busy sent for ox_id[%04x]\n", __func__, 5581 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5582 else if (cmd->term_exchg) 5583 ql_dbg(ql_dbg_io, vha, 0x3007, 5584 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5585 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5586 else 5587 ql_dbg(ql_dbg_io, vha, 0x3008, 5588 "%s: Unexpected cmd in QFull list %p\n", __func__, 5589 cmd); 5590 5591 list_move_tail(&cmd->cmd_list, &free_list); 5592 5593 /* piggy back on hardware_lock for protection */ 5594 vha->hw->tgt.num_qfull_cmds_alloc--; 5595 } 5596 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5597 5598 cmd = NULL; 5599 5600 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5601 list_del(&cmd->cmd_list); 5602 /* This cmd was never sent to TCM. There is no need 5603 * to schedule free or call free_cmd 5604 */ 5605 qlt_free_cmd(cmd); 5606 } 5607 5608 if (!list_empty(&q_full_list)) { 5609 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5610 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5611 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5612 } 5613 5614 return rc; 5615 } 5616 5617 static void 5618 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5619 uint16_t status) 5620 { 5621 int rc = 0; 5622 struct scsi_qla_host *vha = qpair->vha; 5623 5624 rc = __qlt_send_busy(qpair, atio, status); 5625 if (rc == -ENOMEM) 5626 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5627 } 5628 5629 static int 5630 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5631 struct atio_from_isp *atio, uint8_t ha_locked) 5632 { 5633 struct qla_hw_data *ha = vha->hw; 5634 unsigned long flags; 5635 5636 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5637 return 0; 5638 5639 if (!ha_locked) 5640 spin_lock_irqsave(&ha->hardware_lock, flags); 5641 qlt_send_busy(qpair, atio, qla_sam_status); 5642 if (!ha_locked) 5643 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5644 5645 return 1; 5646 } 5647 5648 /* ha->hardware_lock supposed to be held on entry */ 5649 /* called via callback from qla2xxx */ 5650 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5651 struct atio_from_isp *atio, uint8_t ha_locked) 5652 { 5653 struct qla_hw_data *ha = vha->hw; 5654 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5655 int rc; 5656 unsigned long flags = 0; 5657 5658 if (unlikely(tgt == NULL)) { 5659 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5660 "ATIO pkt, but no tgt (ha %p)", ha); 5661 return; 5662 } 5663 /* 5664 * In tgt_stop mode we also should allow all requests to pass. 5665 * Otherwise, some commands can stuck. 5666 */ 5667 5668 tgt->atio_irq_cmd_count++; 5669 5670 switch (atio->u.raw.entry_type) { 5671 case ATIO_TYPE7: 5672 if (unlikely(atio->u.isp24.exchange_addr == 5673 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5674 ql_dbg(ql_dbg_io, vha, 0x3065, 5675 "qla_target(%d): ATIO_TYPE7 " 5676 "received with UNKNOWN exchange address, " 5677 "sending QUEUE_FULL\n", vha->vp_idx); 5678 if (!ha_locked) 5679 spin_lock_irqsave(&ha->hardware_lock, flags); 5680 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5681 if (!ha_locked) 5682 spin_unlock_irqrestore(&ha->hardware_lock, 5683 flags); 5684 break; 5685 } 5686 5687 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5688 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5689 atio, ha_locked); 5690 if (rc != 0) { 5691 tgt->atio_irq_cmd_count--; 5692 return; 5693 } 5694 rc = qlt_handle_cmd_for_atio(vha, atio); 5695 } else { 5696 rc = qlt_handle_task_mgmt(vha, atio); 5697 } 5698 if (unlikely(rc != 0)) { 5699 if (!ha_locked) 5700 spin_lock_irqsave(&ha->hardware_lock, flags); 5701 switch (rc) { 5702 case -ENODEV: 5703 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5704 "qla_target: Unable to send command to target\n"); 5705 break; 5706 case -EBADF: 5707 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5708 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5709 qlt_send_term_exchange(ha->base_qpair, NULL, 5710 atio, 1, 0); 5711 break; 5712 case -EBUSY: 5713 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5714 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5715 vha->vp_idx); 5716 qlt_send_busy(ha->base_qpair, atio, 5717 tc_sam_status); 5718 break; 5719 default: 5720 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5721 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5722 vha->vp_idx); 5723 qlt_send_busy(ha->base_qpair, atio, 5724 qla_sam_status); 5725 break; 5726 } 5727 if (!ha_locked) 5728 spin_unlock_irqrestore(&ha->hardware_lock, 5729 flags); 5730 } 5731 break; 5732 5733 case IMMED_NOTIFY_TYPE: 5734 { 5735 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5736 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5737 "qla_target(%d): Received ATIO packet %x " 5738 "with error status %x\n", vha->vp_idx, 5739 atio->u.raw.entry_type, 5740 atio->u.isp2x.entry_status); 5741 break; 5742 } 5743 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5744 5745 if (!ha_locked) 5746 spin_lock_irqsave(&ha->hardware_lock, flags); 5747 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5748 if (!ha_locked) 5749 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5750 break; 5751 } 5752 5753 default: 5754 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5755 "qla_target(%d): Received unknown ATIO atio " 5756 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5757 break; 5758 } 5759 5760 tgt->atio_irq_cmd_count--; 5761 } 5762 5763 /* 5764 * qpair lock is assume to be held 5765 * rc = 0 : send terminate & abts respond 5766 * rc != 0: do not send term & abts respond 5767 */ 5768 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5769 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5770 { 5771 struct qla_hw_data *ha = vha->hw; 5772 int rc = 0; 5773 5774 /* 5775 * Detect unresolved exchange. If the same ABTS is unable 5776 * to terminate an existing command and the same ABTS loops 5777 * between FW & Driver, then force FW dump. Under 1 jiff, 5778 * we should see multiple loops. 5779 */ 5780 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5781 qpair->retry_term_jiff == jiffies) { 5782 /* found existing exchange */ 5783 qpair->retry_term_cnt++; 5784 if (qpair->retry_term_cnt >= 5) { 5785 rc = -EIO; 5786 qpair->retry_term_cnt = 0; 5787 ql_log(ql_log_warn, vha, 0xffff, 5788 "Unable to send ABTS Respond. Dumping firmware.\n"); 5789 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5790 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5791 5792 if (qpair == ha->base_qpair) 5793 ha->isp_ops->fw_dump(vha); 5794 else 5795 qla2xxx_dump_fw(vha); 5796 5797 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5798 qla2xxx_wake_dpc(vha); 5799 } 5800 } else if (qpair->retry_term_jiff != jiffies) { 5801 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5802 qpair->retry_term_cnt = 0; 5803 qpair->retry_term_jiff = jiffies; 5804 } 5805 5806 return rc; 5807 } 5808 5809 5810 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5811 struct rsp_que *rsp, response_t *pkt) 5812 { 5813 struct abts_resp_from_24xx_fw *entry = 5814 (struct abts_resp_from_24xx_fw *)pkt; 5815 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5816 struct qla_tgt_mgmt_cmd *mcmd; 5817 struct qla_hw_data *ha = vha->hw; 5818 5819 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5820 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5821 ql_dbg(ql_dbg_async, vha, 0xe064, 5822 "qla_target(%d): ABTS Comp without mcmd\n", 5823 vha->vp_idx); 5824 return; 5825 } 5826 5827 if (mcmd) 5828 vha = mcmd->vha; 5829 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5830 5831 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5832 "ABTS_RESP_24XX: compl_status %x\n", 5833 entry->compl_status); 5834 5835 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5836 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5837 le32_to_cpu(entry->error_subcode2) == 0) { 5838 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5839 ha->tgt.tgt_ops->free_mcmd(mcmd); 5840 return; 5841 } 5842 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5843 pkt, mcmd); 5844 } else { 5845 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5846 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5847 vha->vp_idx, entry->compl_status, 5848 entry->error_subcode1, 5849 entry->error_subcode2); 5850 ha->tgt.tgt_ops->free_mcmd(mcmd); 5851 } 5852 } else if (mcmd) { 5853 ha->tgt.tgt_ops->free_mcmd(mcmd); 5854 } 5855 } 5856 5857 /* ha->hardware_lock supposed to be held on entry */ 5858 /* called via callback from qla2xxx */ 5859 static void qlt_response_pkt(struct scsi_qla_host *vha, 5860 struct rsp_que *rsp, response_t *pkt) 5861 { 5862 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5863 5864 if (unlikely(tgt == NULL)) { 5865 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5866 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5867 vha->vp_idx, pkt->entry_type, vha->hw); 5868 return; 5869 } 5870 5871 /* 5872 * In tgt_stop mode we also should allow all requests to pass. 5873 * Otherwise, some commands can stuck. 5874 */ 5875 5876 switch (pkt->entry_type) { 5877 case CTIO_CRC2: 5878 case CTIO_TYPE7: 5879 { 5880 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5881 5882 qlt_do_ctio_completion(vha, rsp, entry->handle, 5883 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5884 entry); 5885 break; 5886 } 5887 5888 case ACCEPT_TGT_IO_TYPE: 5889 { 5890 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5891 int rc; 5892 5893 if (atio->u.isp2x.status != 5894 cpu_to_le16(ATIO_CDB_VALID)) { 5895 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5896 "qla_target(%d): ATIO with error " 5897 "status %x received\n", vha->vp_idx, 5898 le16_to_cpu(atio->u.isp2x.status)); 5899 break; 5900 } 5901 5902 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5903 if (rc != 0) 5904 return; 5905 5906 rc = qlt_handle_cmd_for_atio(vha, atio); 5907 if (unlikely(rc != 0)) { 5908 switch (rc) { 5909 case -ENODEV: 5910 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5911 "qla_target: Unable to send command to target\n"); 5912 break; 5913 case -EBADF: 5914 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5915 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5916 qlt_send_term_exchange(rsp->qpair, NULL, 5917 atio, 1, 0); 5918 break; 5919 case -EBUSY: 5920 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5921 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5922 vha->vp_idx); 5923 qlt_send_busy(rsp->qpair, atio, 5924 tc_sam_status); 5925 break; 5926 default: 5927 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5928 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5929 vha->vp_idx); 5930 qlt_send_busy(rsp->qpair, atio, 5931 qla_sam_status); 5932 break; 5933 } 5934 } 5935 } 5936 break; 5937 5938 case CONTINUE_TGT_IO_TYPE: 5939 { 5940 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5941 5942 qlt_do_ctio_completion(vha, rsp, entry->handle, 5943 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5944 entry); 5945 break; 5946 } 5947 5948 case CTIO_A64_TYPE: 5949 { 5950 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5951 5952 qlt_do_ctio_completion(vha, rsp, entry->handle, 5953 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5954 entry); 5955 break; 5956 } 5957 5958 case IMMED_NOTIFY_TYPE: 5959 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5960 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5961 break; 5962 5963 case NOTIFY_ACK_TYPE: 5964 if (tgt->notify_ack_expected > 0) { 5965 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5966 5967 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5968 "NOTIFY_ACK seq %08x status %x\n", 5969 le16_to_cpu(entry->u.isp2x.seq_id), 5970 le16_to_cpu(entry->u.isp2x.status)); 5971 tgt->notify_ack_expected--; 5972 if (entry->u.isp2x.status != 5973 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5974 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5975 "qla_target(%d): NOTIFY_ACK " 5976 "failed %x\n", vha->vp_idx, 5977 le16_to_cpu(entry->u.isp2x.status)); 5978 } 5979 } else { 5980 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5981 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5982 vha->vp_idx); 5983 } 5984 break; 5985 5986 case ABTS_RECV_24XX: 5987 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5988 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5989 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5990 break; 5991 5992 case ABTS_RESP_24XX: 5993 if (tgt->abts_resp_expected > 0) { 5994 qlt_handle_abts_completion(vha, rsp, pkt); 5995 } else { 5996 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5997 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5998 "received\n", vha->vp_idx); 5999 } 6000 break; 6001 6002 default: 6003 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6004 "qla_target(%d): Received unknown response pkt " 6005 "type %x\n", vha->vp_idx, pkt->entry_type); 6006 break; 6007 } 6008 6009 } 6010 6011 /* 6012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6013 */ 6014 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6015 uint16_t *mailbox) 6016 { 6017 struct qla_hw_data *ha = vha->hw; 6018 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6019 int login_code; 6020 6021 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6022 return; 6023 6024 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6025 IS_QLA2100(ha)) 6026 return; 6027 /* 6028 * In tgt_stop mode we also should allow all requests to pass. 6029 * Otherwise, some commands can stuck. 6030 */ 6031 6032 6033 switch (code) { 6034 case MBA_RESET: /* Reset */ 6035 case MBA_SYSTEM_ERR: /* System Error */ 6036 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6037 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6039 "qla_target(%d): System error async event %#x " 6040 "occurred", vha->vp_idx, code); 6041 break; 6042 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6043 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6044 break; 6045 6046 case MBA_LOOP_UP: 6047 { 6048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6049 "qla_target(%d): Async LOOP_UP occurred " 6050 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6051 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6052 if (tgt->link_reinit_iocb_pending) { 6053 qlt_send_notify_ack(ha->base_qpair, 6054 &tgt->link_reinit_iocb, 6055 0, 0, 0, 0, 0, 0); 6056 tgt->link_reinit_iocb_pending = 0; 6057 } 6058 break; 6059 } 6060 6061 case MBA_LIP_OCCURRED: 6062 case MBA_LOOP_DOWN: 6063 case MBA_LIP_RESET: 6064 case MBA_RSCN_UPDATE: 6065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6066 "qla_target(%d): Async event %#x occurred " 6067 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6068 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6069 break; 6070 6071 case MBA_REJECTED_FCP_CMD: 6072 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6073 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6074 vha->vp_idx, 6075 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6076 6077 if (mailbox[3] == 1) { 6078 /* exchange starvation. */ 6079 vha->hw->exch_starvation++; 6080 if (vha->hw->exch_starvation > 5) { 6081 ql_log(ql_log_warn, vha, 0xd03a, 6082 "Exchange starvation-. Resetting RISC\n"); 6083 6084 vha->hw->exch_starvation = 0; 6085 if (IS_P3P_TYPE(vha->hw)) 6086 set_bit(FCOE_CTX_RESET_NEEDED, 6087 &vha->dpc_flags); 6088 else 6089 set_bit(ISP_ABORT_NEEDED, 6090 &vha->dpc_flags); 6091 qla2xxx_wake_dpc(vha); 6092 } 6093 } 6094 break; 6095 6096 case MBA_PORT_UPDATE: 6097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6098 "qla_target(%d): Port update async event %#x " 6099 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6100 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6101 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6102 6103 login_code = mailbox[2]; 6104 if (login_code == 0x4) { 6105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6106 "Async MB 2: Got PLOGI Complete\n"); 6107 vha->hw->exch_starvation = 0; 6108 } else if (login_code == 0x7) 6109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6110 "Async MB 2: Port Logged Out\n"); 6111 break; 6112 default: 6113 break; 6114 } 6115 6116 } 6117 6118 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6119 uint16_t loop_id) 6120 { 6121 fc_port_t *fcport, *tfcp, *del; 6122 int rc; 6123 unsigned long flags; 6124 u8 newfcport = 0; 6125 6126 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6127 if (!fcport) { 6128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6129 "qla_target(%d): Allocation of tmp FC port failed", 6130 vha->vp_idx); 6131 return NULL; 6132 } 6133 6134 fcport->loop_id = loop_id; 6135 6136 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6137 if (rc != QLA_SUCCESS) { 6138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6139 "qla_target(%d): Failed to retrieve fcport " 6140 "information -- get_port_database() returned %x " 6141 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6142 kfree(fcport); 6143 return NULL; 6144 } 6145 6146 del = NULL; 6147 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6148 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6149 6150 if (tfcp) { 6151 tfcp->d_id = fcport->d_id; 6152 tfcp->port_type = fcport->port_type; 6153 tfcp->supported_classes = fcport->supported_classes; 6154 tfcp->flags |= fcport->flags; 6155 tfcp->scan_state = QLA_FCPORT_FOUND; 6156 6157 del = fcport; 6158 fcport = tfcp; 6159 } else { 6160 if (vha->hw->current_topology == ISP_CFG_F) 6161 fcport->flags |= FCF_FABRIC_DEVICE; 6162 6163 list_add_tail(&fcport->list, &vha->vp_fcports); 6164 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6165 vha->fcport_count++; 6166 fcport->login_gen++; 6167 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6168 fcport->login_succ = 1; 6169 newfcport = 1; 6170 } 6171 6172 fcport->deleted = 0; 6173 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6174 6175 switch (vha->host->active_mode) { 6176 case MODE_INITIATOR: 6177 case MODE_DUAL: 6178 if (newfcport) { 6179 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6180 qla24xx_sched_upd_fcport(fcport); 6181 } else { 6182 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6183 "%s %d %8phC post gpsc fcp_cnt %d\n", 6184 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6185 qla24xx_post_gpsc_work(vha, fcport); 6186 } 6187 } 6188 break; 6189 6190 case MODE_TARGET: 6191 default: 6192 break; 6193 } 6194 if (del) 6195 qla2x00_free_fcport(del); 6196 6197 return fcport; 6198 } 6199 6200 /* Must be called under tgt_mutex */ 6201 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6202 be_id_t s_id) 6203 { 6204 struct fc_port *sess = NULL; 6205 fc_port_t *fcport = NULL; 6206 int rc, global_resets; 6207 uint16_t loop_id = 0; 6208 6209 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6210 /* 6211 * This is Domain Controller, so it should be 6212 * OK to drop SCSI commands from it. 6213 */ 6214 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6215 "Unable to find initiator with S_ID %x:%x:%x", 6216 s_id.domain, s_id.area, s_id.al_pa); 6217 return NULL; 6218 } 6219 6220 mutex_lock(&vha->vha_tgt.tgt_mutex); 6221 6222 retry: 6223 global_resets = 6224 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6225 6226 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6227 if (rc != 0) { 6228 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6229 6230 ql_log(ql_log_info, vha, 0xf071, 6231 "qla_target(%d): Unable to find " 6232 "initiator with S_ID %x:%x:%x", 6233 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6234 6235 if (rc == -ENOENT) { 6236 qlt_port_logo_t logo; 6237 6238 logo.id = be_to_port_id(s_id); 6239 logo.cmd_count = 1; 6240 qlt_send_first_logo(vha, &logo); 6241 } 6242 6243 return NULL; 6244 } 6245 6246 fcport = qlt_get_port_database(vha, loop_id); 6247 if (!fcport) { 6248 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6249 return NULL; 6250 } 6251 6252 if (global_resets != 6253 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6255 "qla_target(%d): global reset during session discovery " 6256 "(counter was %d, new %d), retrying", vha->vp_idx, 6257 global_resets, 6258 atomic_read(&vha->vha_tgt. 6259 qla_tgt->tgt_global_resets_count)); 6260 goto retry; 6261 } 6262 6263 sess = qlt_create_sess(vha, fcport, true); 6264 6265 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6266 6267 return sess; 6268 } 6269 6270 static void qlt_abort_work(struct qla_tgt *tgt, 6271 struct qla_tgt_sess_work_param *prm) 6272 { 6273 struct scsi_qla_host *vha = tgt->vha; 6274 struct qla_hw_data *ha = vha->hw; 6275 struct fc_port *sess = NULL; 6276 unsigned long flags = 0, flags2 = 0; 6277 be_id_t s_id; 6278 int rc; 6279 6280 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6281 6282 if (tgt->tgt_stop) 6283 goto out_term2; 6284 6285 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6286 6287 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6288 if (!sess) { 6289 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6290 6291 sess = qlt_make_local_sess(vha, s_id); 6292 /* sess has got an extra creation ref */ 6293 6294 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6295 if (!sess) 6296 goto out_term2; 6297 } else { 6298 if (sess->deleted) { 6299 sess = NULL; 6300 goto out_term2; 6301 } 6302 6303 if (!kref_get_unless_zero(&sess->sess_kref)) { 6304 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6305 "%s: kref_get fail %8phC \n", 6306 __func__, sess->port_name); 6307 sess = NULL; 6308 goto out_term2; 6309 } 6310 } 6311 6312 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6313 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6314 6315 ha->tgt.tgt_ops->put_sess(sess); 6316 6317 if (rc != 0) 6318 goto out_term; 6319 return; 6320 6321 out_term2: 6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6323 6324 out_term: 6325 spin_lock_irqsave(&ha->hardware_lock, flags); 6326 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6327 FCP_TMF_REJECTED, false); 6328 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6329 } 6330 6331 static void qlt_tmr_work(struct qla_tgt *tgt, 6332 struct qla_tgt_sess_work_param *prm) 6333 { 6334 struct atio_from_isp *a = &prm->tm_iocb2; 6335 struct scsi_qla_host *vha = tgt->vha; 6336 struct qla_hw_data *ha = vha->hw; 6337 struct fc_port *sess; 6338 unsigned long flags; 6339 be_id_t s_id; 6340 int rc; 6341 u64 unpacked_lun; 6342 int fn; 6343 void *iocb; 6344 6345 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6346 6347 if (tgt->tgt_stop) 6348 goto out_term2; 6349 6350 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6351 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6352 if (!sess) { 6353 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6354 6355 sess = qlt_make_local_sess(vha, s_id); 6356 /* sess has got an extra creation ref */ 6357 6358 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6359 if (!sess) 6360 goto out_term2; 6361 } else { 6362 if (sess->deleted) { 6363 goto out_term2; 6364 } 6365 6366 if (!kref_get_unless_zero(&sess->sess_kref)) { 6367 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6368 "%s: kref_get fail %8phC\n", 6369 __func__, sess->port_name); 6370 goto out_term2; 6371 } 6372 } 6373 6374 iocb = a; 6375 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6376 unpacked_lun = 6377 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6378 6379 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6380 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6381 6382 ha->tgt.tgt_ops->put_sess(sess); 6383 6384 if (rc != 0) 6385 goto out_term; 6386 return; 6387 6388 out_term2: 6389 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6390 out_term: 6391 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6392 } 6393 6394 static void qlt_sess_work_fn(struct work_struct *work) 6395 { 6396 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6397 struct scsi_qla_host *vha = tgt->vha; 6398 unsigned long flags; 6399 6400 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6401 6402 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6403 while (!list_empty(&tgt->sess_works_list)) { 6404 struct qla_tgt_sess_work_param *prm = list_entry( 6405 tgt->sess_works_list.next, typeof(*prm), 6406 sess_works_list_entry); 6407 6408 /* 6409 * This work can be scheduled on several CPUs at time, so we 6410 * must delete the entry to eliminate double processing 6411 */ 6412 list_del(&prm->sess_works_list_entry); 6413 6414 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6415 6416 switch (prm->type) { 6417 case QLA_TGT_SESS_WORK_ABORT: 6418 qlt_abort_work(tgt, prm); 6419 break; 6420 case QLA_TGT_SESS_WORK_TM: 6421 qlt_tmr_work(tgt, prm); 6422 break; 6423 default: 6424 BUG_ON(1); 6425 break; 6426 } 6427 6428 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6429 6430 kfree(prm); 6431 } 6432 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6433 } 6434 6435 /* Must be called under tgt_host_action_mutex */ 6436 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6437 { 6438 struct qla_tgt *tgt; 6439 int rc, i; 6440 struct qla_qpair_hint *h; 6441 6442 if (!QLA_TGT_MODE_ENABLED()) 6443 return 0; 6444 6445 if (!IS_TGT_MODE_CAPABLE(ha)) { 6446 ql_log(ql_log_warn, base_vha, 0xe070, 6447 "This adapter does not support target mode.\n"); 6448 return 0; 6449 } 6450 6451 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6452 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6453 6454 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6455 6456 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6457 if (!tgt) { 6458 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6459 "Unable to allocate struct qla_tgt\n"); 6460 return -ENOMEM; 6461 } 6462 6463 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6464 sizeof(struct qla_qpair_hint), 6465 GFP_KERNEL); 6466 if (!tgt->qphints) { 6467 kfree(tgt); 6468 ql_log(ql_log_warn, base_vha, 0x0197, 6469 "Unable to allocate qpair hints.\n"); 6470 return -ENOMEM; 6471 } 6472 6473 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6474 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6475 6476 rc = btree_init64(&tgt->lun_qpair_map); 6477 if (rc) { 6478 kfree(tgt->qphints); 6479 kfree(tgt); 6480 ql_log(ql_log_info, base_vha, 0x0198, 6481 "Unable to initialize lun_qpair_map btree\n"); 6482 return -EIO; 6483 } 6484 h = &tgt->qphints[0]; 6485 h->qpair = ha->base_qpair; 6486 INIT_LIST_HEAD(&h->hint_elem); 6487 h->cpuid = ha->base_qpair->cpuid; 6488 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6489 6490 for (i = 0; i < ha->max_qpairs; i++) { 6491 unsigned long flags; 6492 6493 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6494 6495 h = &tgt->qphints[i + 1]; 6496 INIT_LIST_HEAD(&h->hint_elem); 6497 if (qpair) { 6498 h->qpair = qpair; 6499 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6500 list_add_tail(&h->hint_elem, &qpair->hints_list); 6501 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6502 h->cpuid = qpair->cpuid; 6503 } 6504 } 6505 6506 tgt->ha = ha; 6507 tgt->vha = base_vha; 6508 init_waitqueue_head(&tgt->waitQ); 6509 INIT_LIST_HEAD(&tgt->del_sess_list); 6510 spin_lock_init(&tgt->sess_work_lock); 6511 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6512 INIT_LIST_HEAD(&tgt->sess_works_list); 6513 atomic_set(&tgt->tgt_global_resets_count, 0); 6514 6515 base_vha->vha_tgt.qla_tgt = tgt; 6516 6517 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6518 "qla_target(%d): using 64 Bit PCI addressing", 6519 base_vha->vp_idx); 6520 /* 3 is reserved */ 6521 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6522 6523 mutex_lock(&qla_tgt_mutex); 6524 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6525 mutex_unlock(&qla_tgt_mutex); 6526 6527 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6528 ha->tgt.tgt_ops->add_target(base_vha); 6529 6530 return 0; 6531 } 6532 6533 /* Must be called under tgt_host_action_mutex */ 6534 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6535 { 6536 if (!vha->vha_tgt.qla_tgt) 6537 return 0; 6538 6539 if (vha->fc_vport) { 6540 qlt_release(vha->vha_tgt.qla_tgt); 6541 return 0; 6542 } 6543 6544 /* free left over qfull cmds */ 6545 qlt_init_term_exchange(vha); 6546 6547 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6548 vha->host_no, ha); 6549 qlt_release(vha->vha_tgt.qla_tgt); 6550 6551 return 0; 6552 } 6553 6554 void qla_remove_hostmap(struct qla_hw_data *ha) 6555 { 6556 struct scsi_qla_host *node; 6557 u32 key = 0; 6558 6559 btree_for_each_safe32(&ha->host_map, key, node) 6560 btree_remove32(&ha->host_map, key); 6561 6562 btree_destroy32(&ha->host_map); 6563 } 6564 6565 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6566 unsigned char *b) 6567 { 6568 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6569 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6570 put_unaligned_be64(wwpn, b); 6571 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6572 } 6573 6574 /** 6575 * qlt_lport_register - register lport with external module 6576 * 6577 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6578 * @phys_wwpn: physical port WWPN 6579 * @npiv_wwpn: NPIV WWPN 6580 * @npiv_wwnn: NPIV WWNN 6581 * @callback: lport initialization callback for tcm_qla2xxx code 6582 */ 6583 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6584 u64 npiv_wwpn, u64 npiv_wwnn, 6585 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6586 { 6587 struct qla_tgt *tgt; 6588 struct scsi_qla_host *vha; 6589 struct qla_hw_data *ha; 6590 struct Scsi_Host *host; 6591 unsigned long flags; 6592 int rc; 6593 u8 b[WWN_SIZE]; 6594 6595 mutex_lock(&qla_tgt_mutex); 6596 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6597 vha = tgt->vha; 6598 ha = vha->hw; 6599 6600 host = vha->host; 6601 if (!host) 6602 continue; 6603 6604 if (!(host->hostt->supported_mode & MODE_TARGET)) 6605 continue; 6606 6607 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6608 continue; 6609 6610 spin_lock_irqsave(&ha->hardware_lock, flags); 6611 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6612 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6613 host->host_no); 6614 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6615 continue; 6616 } 6617 if (tgt->tgt_stop) { 6618 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6619 host->host_no); 6620 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6621 continue; 6622 } 6623 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6624 6625 if (!scsi_host_get(host)) { 6626 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6627 "Unable to scsi_host_get() for" 6628 " qla2xxx scsi_host\n"); 6629 continue; 6630 } 6631 qlt_lport_dump(vha, phys_wwpn, b); 6632 6633 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6634 scsi_host_put(host); 6635 continue; 6636 } 6637 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6638 if (rc != 0) 6639 scsi_host_put(host); 6640 6641 mutex_unlock(&qla_tgt_mutex); 6642 return rc; 6643 } 6644 mutex_unlock(&qla_tgt_mutex); 6645 6646 return -ENODEV; 6647 } 6648 EXPORT_SYMBOL(qlt_lport_register); 6649 6650 /** 6651 * qlt_lport_deregister - Degister lport 6652 * 6653 * @vha: Registered scsi_qla_host pointer 6654 */ 6655 void qlt_lport_deregister(struct scsi_qla_host *vha) 6656 { 6657 struct qla_hw_data *ha = vha->hw; 6658 struct Scsi_Host *sh = vha->host; 6659 /* 6660 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6661 */ 6662 vha->vha_tgt.target_lport_ptr = NULL; 6663 ha->tgt.tgt_ops = NULL; 6664 /* 6665 * Release the Scsi_Host reference for the underlying qla2xxx host 6666 */ 6667 scsi_host_put(sh); 6668 } 6669 EXPORT_SYMBOL(qlt_lport_deregister); 6670 6671 /* Must be called under HW lock */ 6672 void qlt_set_mode(struct scsi_qla_host *vha) 6673 { 6674 switch (vha->qlini_mode) { 6675 case QLA2XXX_INI_MODE_DISABLED: 6676 case QLA2XXX_INI_MODE_EXCLUSIVE: 6677 vha->host->active_mode = MODE_TARGET; 6678 break; 6679 case QLA2XXX_INI_MODE_ENABLED: 6680 vha->host->active_mode = MODE_INITIATOR; 6681 break; 6682 case QLA2XXX_INI_MODE_DUAL: 6683 vha->host->active_mode = MODE_DUAL; 6684 break; 6685 default: 6686 break; 6687 } 6688 } 6689 6690 /* Must be called under HW lock */ 6691 static void qlt_clear_mode(struct scsi_qla_host *vha) 6692 { 6693 switch (vha->qlini_mode) { 6694 case QLA2XXX_INI_MODE_DISABLED: 6695 vha->host->active_mode = MODE_UNKNOWN; 6696 break; 6697 case QLA2XXX_INI_MODE_EXCLUSIVE: 6698 vha->host->active_mode = MODE_INITIATOR; 6699 break; 6700 case QLA2XXX_INI_MODE_ENABLED: 6701 case QLA2XXX_INI_MODE_DUAL: 6702 vha->host->active_mode = MODE_INITIATOR; 6703 break; 6704 default: 6705 break; 6706 } 6707 } 6708 6709 /* 6710 * qla_tgt_enable_vha - NO LOCK HELD 6711 * 6712 * host_reset, bring up w/ Target Mode Enabled 6713 */ 6714 void 6715 qlt_enable_vha(struct scsi_qla_host *vha) 6716 { 6717 struct qla_hw_data *ha = vha->hw; 6718 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6719 unsigned long flags; 6720 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6721 6722 if (!tgt) { 6723 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6724 "Unable to locate qla_tgt pointer from" 6725 " struct qla_hw_data\n"); 6726 dump_stack(); 6727 return; 6728 } 6729 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6730 return; 6731 6732 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6733 ha->tgt.num_act_qpairs = ha->max_qpairs; 6734 spin_lock_irqsave(&ha->hardware_lock, flags); 6735 tgt->tgt_stopped = 0; 6736 qlt_set_mode(vha); 6737 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6738 6739 mutex_lock(&ha->optrom_mutex); 6740 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6741 "%s.\n", __func__); 6742 if (vha->vp_idx) { 6743 qla24xx_disable_vp(vha); 6744 qla24xx_enable_vp(vha); 6745 } else { 6746 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6747 qla2xxx_wake_dpc(base_vha); 6748 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6749 QLA_SUCCESS); 6750 } 6751 mutex_unlock(&ha->optrom_mutex); 6752 } 6753 EXPORT_SYMBOL(qlt_enable_vha); 6754 6755 /* 6756 * qla_tgt_disable_vha - NO LOCK HELD 6757 * 6758 * Disable Target Mode and reset the adapter 6759 */ 6760 static void qlt_disable_vha(struct scsi_qla_host *vha) 6761 { 6762 struct qla_hw_data *ha = vha->hw; 6763 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6764 unsigned long flags; 6765 6766 if (!tgt) { 6767 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6768 "Unable to locate qla_tgt pointer from" 6769 " struct qla_hw_data\n"); 6770 dump_stack(); 6771 return; 6772 } 6773 6774 spin_lock_irqsave(&ha->hardware_lock, flags); 6775 qlt_clear_mode(vha); 6776 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6777 6778 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6779 qla2xxx_wake_dpc(vha); 6780 6781 /* 6782 * We are expecting the offline state. 6783 * QLA_FUNCTION_FAILED means that adapter is offline. 6784 */ 6785 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6786 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6787 "adapter is offline\n"); 6788 } 6789 6790 /* 6791 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6792 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6793 * members. 6794 */ 6795 void 6796 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6797 { 6798 vha->vha_tgt.qla_tgt = NULL; 6799 6800 mutex_init(&vha->vha_tgt.tgt_mutex); 6801 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6802 6803 qlt_clear_mode(vha); 6804 6805 /* 6806 * NOTE: Currently the value is kept the same for <24xx and 6807 * >=24xx ISPs. If it is necessary to change it, 6808 * the check should be added for specific ISPs, 6809 * assigning the value appropriately. 6810 */ 6811 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6812 6813 qlt_add_target(ha, vha); 6814 } 6815 6816 u8 6817 qlt_rff_id(struct scsi_qla_host *vha) 6818 { 6819 u8 fc4_feature = 0; 6820 /* 6821 * FC-4 Feature bit 0 indicates target functionality to the name server. 6822 */ 6823 if (qla_tgt_mode_enabled(vha)) { 6824 fc4_feature = BIT_0; 6825 } else if (qla_ini_mode_enabled(vha)) { 6826 fc4_feature = BIT_1; 6827 } else if (qla_dual_mode_enabled(vha)) 6828 fc4_feature = BIT_0 | BIT_1; 6829 6830 return fc4_feature; 6831 } 6832 6833 /* 6834 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6835 * @ha: HA context 6836 * 6837 * Beginning of ATIO ring has initialization control block already built 6838 * by nvram config routine. 6839 * 6840 * Returns 0 on success. 6841 */ 6842 void 6843 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6844 { 6845 struct qla_hw_data *ha = vha->hw; 6846 uint16_t cnt; 6847 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6848 6849 if (qla_ini_mode_enabled(vha)) 6850 return; 6851 6852 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6853 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6854 pkt++; 6855 } 6856 6857 } 6858 6859 /* 6860 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6861 * @ha: SCSI driver HA context 6862 */ 6863 void 6864 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6865 { 6866 struct qla_hw_data *ha = vha->hw; 6867 struct atio_from_isp *pkt; 6868 int cnt, i; 6869 6870 if (!ha->flags.fw_started) 6871 return; 6872 6873 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6874 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6875 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6876 cnt = pkt->u.raw.entry_count; 6877 6878 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6879 /* 6880 * This packet is corrupted. The header + payload 6881 * can not be trusted. There is no point in passing 6882 * it further up. 6883 */ 6884 ql_log(ql_log_warn, vha, 0xd03c, 6885 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6886 &pkt->u.isp24.fcp_hdr.s_id, 6887 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6888 pkt->u.isp24.exchange_addr, pkt); 6889 6890 adjust_corrupted_atio(pkt); 6891 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6892 ha_locked, 0); 6893 } else { 6894 qlt_24xx_atio_pkt_all_vps(vha, 6895 (struct atio_from_isp *)pkt, ha_locked); 6896 } 6897 6898 for (i = 0; i < cnt; i++) { 6899 ha->tgt.atio_ring_index++; 6900 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6901 ha->tgt.atio_ring_index = 0; 6902 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6903 } else 6904 ha->tgt.atio_ring_ptr++; 6905 6906 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6907 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6908 } 6909 wmb(); 6910 } 6911 6912 /* Adjust ring index */ 6913 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6914 } 6915 6916 void 6917 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6918 { 6919 struct qla_hw_data *ha = vha->hw; 6920 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6921 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6922 6923 if (!QLA_TGT_MODE_ENABLED()) 6924 return; 6925 6926 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6927 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6928 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6929 6930 if (ha->flags.msix_enabled) { 6931 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6932 if (IS_QLA2071(ha)) { 6933 /* 4 ports Baker: Enable Interrupt Handshake */ 6934 icb->msix_atio = 0; 6935 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6936 } else { 6937 icb->msix_atio = cpu_to_le16(msix->entry); 6938 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6939 } 6940 ql_dbg(ql_dbg_init, vha, 0xf072, 6941 "Registering ICB vector 0x%x for atio que.\n", 6942 msix->entry); 6943 } 6944 } else { 6945 /* INTx|MSI */ 6946 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6947 icb->msix_atio = 0; 6948 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6949 ql_dbg(ql_dbg_init, vha, 0xf072, 6950 "%s: Use INTx for ATIOQ.\n", __func__); 6951 } 6952 } 6953 } 6954 6955 void 6956 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6957 { 6958 struct qla_hw_data *ha = vha->hw; 6959 u32 tmp; 6960 6961 if (!QLA_TGT_MODE_ENABLED()) 6962 return; 6963 6964 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6965 if (!ha->tgt.saved_set) { 6966 /* We save only once */ 6967 ha->tgt.saved_exchange_count = nv->exchange_count; 6968 ha->tgt.saved_firmware_options_1 = 6969 nv->firmware_options_1; 6970 ha->tgt.saved_firmware_options_2 = 6971 nv->firmware_options_2; 6972 ha->tgt.saved_firmware_options_3 = 6973 nv->firmware_options_3; 6974 ha->tgt.saved_set = 1; 6975 } 6976 6977 if (qla_tgt_mode_enabled(vha)) 6978 nv->exchange_count = cpu_to_le16(0xFFFF); 6979 else /* dual */ 6980 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6981 6982 /* Enable target mode */ 6983 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6984 6985 /* Disable ini mode, if requested */ 6986 if (qla_tgt_mode_enabled(vha)) 6987 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6988 6989 /* Disable Full Login after LIP */ 6990 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6991 /* Enable initial LIP */ 6992 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6993 if (ql2xtgt_tape_enable) 6994 /* Enable FC Tape support */ 6995 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6996 else 6997 /* Disable FC Tape support */ 6998 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6999 7000 /* Disable Full Login after LIP */ 7001 nv->host_p &= cpu_to_le32(~BIT_10); 7002 7003 /* 7004 * clear BIT 15 explicitly as we have seen at least 7005 * a couple of instances where this was set and this 7006 * was causing the firmware to not be initialized. 7007 */ 7008 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7009 /* Enable target PRLI control */ 7010 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7011 7012 if (IS_QLA25XX(ha)) { 7013 /* Change Loop-prefer to Pt-Pt */ 7014 tmp = ~(BIT_4|BIT_5|BIT_6); 7015 nv->firmware_options_2 &= cpu_to_le32(tmp); 7016 tmp = P2P << 4; 7017 nv->firmware_options_2 |= cpu_to_le32(tmp); 7018 } 7019 } else { 7020 if (ha->tgt.saved_set) { 7021 nv->exchange_count = ha->tgt.saved_exchange_count; 7022 nv->firmware_options_1 = 7023 ha->tgt.saved_firmware_options_1; 7024 nv->firmware_options_2 = 7025 ha->tgt.saved_firmware_options_2; 7026 nv->firmware_options_3 = 7027 ha->tgt.saved_firmware_options_3; 7028 } 7029 return; 7030 } 7031 7032 if (ha->base_qpair->enable_class_2) { 7033 if (vha->flags.init_done) 7034 fc_host_supported_classes(vha->host) = 7035 FC_COS_CLASS2 | FC_COS_CLASS3; 7036 7037 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7038 } else { 7039 if (vha->flags.init_done) 7040 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7041 7042 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7043 } 7044 } 7045 7046 void 7047 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7048 struct init_cb_24xx *icb) 7049 { 7050 struct qla_hw_data *ha = vha->hw; 7051 7052 if (!QLA_TGT_MODE_ENABLED()) 7053 return; 7054 7055 if (ha->tgt.node_name_set) { 7056 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7057 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7058 } 7059 } 7060 7061 void 7062 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7063 { 7064 struct qla_hw_data *ha = vha->hw; 7065 u32 tmp; 7066 7067 if (!QLA_TGT_MODE_ENABLED()) 7068 return; 7069 7070 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7071 if (!ha->tgt.saved_set) { 7072 /* We save only once */ 7073 ha->tgt.saved_exchange_count = nv->exchange_count; 7074 ha->tgt.saved_firmware_options_1 = 7075 nv->firmware_options_1; 7076 ha->tgt.saved_firmware_options_2 = 7077 nv->firmware_options_2; 7078 ha->tgt.saved_firmware_options_3 = 7079 nv->firmware_options_3; 7080 ha->tgt.saved_set = 1; 7081 } 7082 7083 if (qla_tgt_mode_enabled(vha)) 7084 nv->exchange_count = cpu_to_le16(0xFFFF); 7085 else /* dual */ 7086 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7087 7088 /* Enable target mode */ 7089 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7090 7091 /* Disable ini mode, if requested */ 7092 if (qla_tgt_mode_enabled(vha)) 7093 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7094 /* Disable Full Login after LIP */ 7095 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7096 /* Enable initial LIP */ 7097 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7098 /* 7099 * clear BIT 15 explicitly as we have seen at 7100 * least a couple of instances where this was set 7101 * and this was causing the firmware to not be 7102 * initialized. 7103 */ 7104 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7105 if (ql2xtgt_tape_enable) 7106 /* Enable FC tape support */ 7107 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7108 else 7109 /* Disable FC tape support */ 7110 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7111 7112 /* Disable Full Login after LIP */ 7113 nv->host_p &= cpu_to_le32(~BIT_10); 7114 /* Enable target PRLI control */ 7115 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7116 7117 /* Change Loop-prefer to Pt-Pt */ 7118 tmp = ~(BIT_4|BIT_5|BIT_6); 7119 nv->firmware_options_2 &= cpu_to_le32(tmp); 7120 tmp = P2P << 4; 7121 nv->firmware_options_2 |= cpu_to_le32(tmp); 7122 } else { 7123 if (ha->tgt.saved_set) { 7124 nv->exchange_count = ha->tgt.saved_exchange_count; 7125 nv->firmware_options_1 = 7126 ha->tgt.saved_firmware_options_1; 7127 nv->firmware_options_2 = 7128 ha->tgt.saved_firmware_options_2; 7129 nv->firmware_options_3 = 7130 ha->tgt.saved_firmware_options_3; 7131 } 7132 return; 7133 } 7134 7135 if (ha->base_qpair->enable_class_2) { 7136 if (vha->flags.init_done) 7137 fc_host_supported_classes(vha->host) = 7138 FC_COS_CLASS2 | FC_COS_CLASS3; 7139 7140 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7141 } else { 7142 if (vha->flags.init_done) 7143 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7144 7145 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7146 } 7147 } 7148 7149 void 7150 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7151 struct init_cb_81xx *icb) 7152 { 7153 struct qla_hw_data *ha = vha->hw; 7154 7155 if (!QLA_TGT_MODE_ENABLED()) 7156 return; 7157 7158 if (ha->tgt.node_name_set) { 7159 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7160 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7161 } 7162 } 7163 7164 void 7165 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7166 { 7167 if (!QLA_TGT_MODE_ENABLED()) 7168 return; 7169 7170 ha->msix_count += 1; /* For ATIO Q */ 7171 } 7172 7173 7174 void 7175 qlt_modify_vp_config(struct scsi_qla_host *vha, 7176 struct vp_config_entry_24xx *vpmod) 7177 { 7178 /* enable target mode. Bit5 = 1 => disable */ 7179 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7180 vpmod->options_idx1 &= ~BIT_5; 7181 7182 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7183 if (qla_tgt_mode_enabled(vha)) 7184 vpmod->options_idx1 &= ~BIT_4; 7185 } 7186 7187 void 7188 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7189 { 7190 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7191 if (!QLA_TGT_MODE_ENABLED()) 7192 return; 7193 7194 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7195 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7196 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7197 } else { 7198 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7199 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7200 } 7201 7202 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7203 7204 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7205 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7206 qlt_unknown_atio_work_fn); 7207 7208 qlt_clear_mode(base_vha); 7209 7210 qlt_update_vp_map(base_vha, SET_VP_IDX); 7211 } 7212 7213 irqreturn_t 7214 qla83xx_msix_atio_q(int irq, void *dev_id) 7215 { 7216 struct rsp_que *rsp; 7217 scsi_qla_host_t *vha; 7218 struct qla_hw_data *ha; 7219 unsigned long flags; 7220 7221 rsp = (struct rsp_que *) dev_id; 7222 ha = rsp->hw; 7223 vha = pci_get_drvdata(ha->pdev); 7224 7225 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7226 7227 qlt_24xx_process_atio_queue(vha, 0); 7228 7229 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7230 7231 return IRQ_HANDLED; 7232 } 7233 7234 static void 7235 qlt_handle_abts_recv_work(struct work_struct *work) 7236 { 7237 struct qla_tgt_sess_op *op = container_of(work, 7238 struct qla_tgt_sess_op, work); 7239 scsi_qla_host_t *vha = op->vha; 7240 struct qla_hw_data *ha = vha->hw; 7241 unsigned long flags; 7242 7243 if (qla2x00_reset_active(vha) || 7244 (op->chip_reset != ha->base_qpair->chip_reset)) 7245 return; 7246 7247 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7248 qlt_24xx_process_atio_queue(vha, 0); 7249 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7250 7251 spin_lock_irqsave(&ha->hardware_lock, flags); 7252 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7253 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7254 7255 kfree(op); 7256 } 7257 7258 void 7259 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7260 response_t *pkt) 7261 { 7262 struct qla_tgt_sess_op *op; 7263 7264 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7265 7266 if (!op) { 7267 /* do not reach for ATIO queue here. This is best effort err 7268 * recovery at this point. 7269 */ 7270 qlt_response_pkt_all_vps(vha, rsp, pkt); 7271 return; 7272 } 7273 7274 memcpy(&op->atio, pkt, sizeof(*pkt)); 7275 op->vha = vha; 7276 op->chip_reset = vha->hw->base_qpair->chip_reset; 7277 op->rsp = rsp; 7278 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7279 queue_work(qla_tgt_wq, &op->work); 7280 return; 7281 } 7282 7283 int 7284 qlt_mem_alloc(struct qla_hw_data *ha) 7285 { 7286 if (!QLA_TGT_MODE_ENABLED()) 7287 return 0; 7288 7289 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7290 sizeof(struct qla_tgt_vp_map), 7291 GFP_KERNEL); 7292 if (!ha->tgt.tgt_vp_map) 7293 return -ENOMEM; 7294 7295 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7296 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7297 &ha->tgt.atio_dma, GFP_KERNEL); 7298 if (!ha->tgt.atio_ring) { 7299 kfree(ha->tgt.tgt_vp_map); 7300 return -ENOMEM; 7301 } 7302 return 0; 7303 } 7304 7305 void 7306 qlt_mem_free(struct qla_hw_data *ha) 7307 { 7308 if (!QLA_TGT_MODE_ENABLED()) 7309 return; 7310 7311 if (ha->tgt.atio_ring) { 7312 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7313 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7314 ha->tgt.atio_dma); 7315 } 7316 ha->tgt.atio_ring = NULL; 7317 ha->tgt.atio_dma = 0; 7318 kfree(ha->tgt.tgt_vp_map); 7319 ha->tgt.tgt_vp_map = NULL; 7320 } 7321 7322 /* vport_slock to be held by the caller */ 7323 void 7324 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7325 { 7326 void *slot; 7327 u32 key; 7328 int rc; 7329 7330 key = vha->d_id.b24; 7331 7332 switch (cmd) { 7333 case SET_VP_IDX: 7334 if (!QLA_TGT_MODE_ENABLED()) 7335 return; 7336 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7337 break; 7338 case SET_AL_PA: 7339 slot = btree_lookup32(&vha->hw->host_map, key); 7340 if (!slot) { 7341 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7342 "Save vha in host_map %p %06x\n", vha, key); 7343 rc = btree_insert32(&vha->hw->host_map, 7344 key, vha, GFP_ATOMIC); 7345 if (rc) 7346 ql_log(ql_log_info, vha, 0xd03e, 7347 "Unable to insert s_id into host_map: %06x\n", 7348 key); 7349 return; 7350 } 7351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7352 "replace existing vha in host_map %p %06x\n", vha, key); 7353 btree_update32(&vha->hw->host_map, key, vha); 7354 break; 7355 case RESET_VP_IDX: 7356 if (!QLA_TGT_MODE_ENABLED()) 7357 return; 7358 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7359 break; 7360 case RESET_AL_PA: 7361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7362 "clear vha in host_map %p %06x\n", vha, key); 7363 slot = btree_lookup32(&vha->hw->host_map, key); 7364 if (slot) 7365 btree_remove32(&vha->hw->host_map, key); 7366 vha->d_id.b24 = 0; 7367 break; 7368 } 7369 } 7370 7371 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7372 { 7373 7374 if (!vha->d_id.b24) { 7375 vha->d_id = id; 7376 qlt_update_vp_map(vha, SET_AL_PA); 7377 } else if (vha->d_id.b24 != id.b24) { 7378 qlt_update_vp_map(vha, RESET_AL_PA); 7379 vha->d_id = id; 7380 qlt_update_vp_map(vha, SET_AL_PA); 7381 } 7382 } 7383 7384 static int __init qlt_parse_ini_mode(void) 7385 { 7386 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7387 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7388 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7389 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7390 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7391 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7392 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7393 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7394 else 7395 return false; 7396 7397 return true; 7398 } 7399 7400 int __init qlt_init(void) 7401 { 7402 int ret; 7403 7404 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7405 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7406 7407 if (!qlt_parse_ini_mode()) { 7408 ql_log(ql_log_fatal, NULL, 0xe06b, 7409 "qlt_parse_ini_mode() failed\n"); 7410 return -EINVAL; 7411 } 7412 7413 if (!QLA_TGT_MODE_ENABLED()) 7414 return 0; 7415 7416 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7417 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7418 qla_tgt_mgmt_cmd), 0, NULL); 7419 if (!qla_tgt_mgmt_cmd_cachep) { 7420 ql_log(ql_log_fatal, NULL, 0xd04b, 7421 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7422 return -ENOMEM; 7423 } 7424 7425 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7426 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7427 0, NULL); 7428 7429 if (!qla_tgt_plogi_cachep) { 7430 ql_log(ql_log_fatal, NULL, 0xe06d, 7431 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7432 ret = -ENOMEM; 7433 goto out_mgmt_cmd_cachep; 7434 } 7435 7436 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7437 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7438 if (!qla_tgt_mgmt_cmd_mempool) { 7439 ql_log(ql_log_fatal, NULL, 0xe06e, 7440 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7441 ret = -ENOMEM; 7442 goto out_plogi_cachep; 7443 } 7444 7445 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7446 if (!qla_tgt_wq) { 7447 ql_log(ql_log_fatal, NULL, 0xe06f, 7448 "alloc_workqueue for qla_tgt_wq failed\n"); 7449 ret = -ENOMEM; 7450 goto out_cmd_mempool; 7451 } 7452 /* 7453 * Return 1 to signal that initiator-mode is being disabled 7454 */ 7455 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7456 7457 out_cmd_mempool: 7458 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7459 out_plogi_cachep: 7460 kmem_cache_destroy(qla_tgt_plogi_cachep); 7461 out_mgmt_cmd_cachep: 7462 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7463 return ret; 7464 } 7465 7466 void qlt_exit(void) 7467 { 7468 if (!QLA_TGT_MODE_ENABLED()) 7469 return; 7470 7471 destroy_workqueue(qla_tgt_wq); 7472 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7473 kmem_cache_destroy(qla_tgt_plogi_cachep); 7474 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7475 } 7476