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 <linux/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 void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 202 { 203 unsigned long flags; 204 205 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 206 207 vha->hw->tgt.num_pend_cmds++; 208 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 209 vha->qla_stats.stat_max_pend_cmds = 210 vha->hw->tgt.num_pend_cmds; 211 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 212 } 213 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 214 { 215 unsigned long flags; 216 217 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 218 vha->hw->tgt.num_pend_cmds--; 219 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 220 } 221 222 223 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 224 struct atio_from_isp *atio, uint8_t ha_locked) 225 { 226 struct qla_tgt_sess_op *u; 227 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 228 unsigned long flags; 229 230 if (tgt->tgt_stop) { 231 ql_dbg(ql_dbg_async, vha, 0x502c, 232 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 233 vha->vp_idx); 234 goto out_term; 235 } 236 237 u = kzalloc(sizeof(*u), GFP_ATOMIC); 238 if (u == NULL) 239 goto out_term; 240 241 u->vha = vha; 242 memcpy(&u->atio, atio, sizeof(*atio)); 243 INIT_LIST_HEAD(&u->cmd_list); 244 245 spin_lock_irqsave(&vha->cmd_list_lock, flags); 246 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 247 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 248 249 schedule_delayed_work(&vha->unknown_atio_work, 1); 250 251 out: 252 return; 253 254 out_term: 255 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 256 goto out; 257 } 258 259 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 260 uint8_t ha_locked) 261 { 262 struct qla_tgt_sess_op *u, *t; 263 scsi_qla_host_t *host; 264 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 265 unsigned long flags; 266 uint8_t queued = 0; 267 268 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 269 if (u->aborted) { 270 ql_dbg(ql_dbg_async, vha, 0x502e, 271 "Freeing unknown %s %p, because of Abort\n", 272 "ATIO_TYPE7", u); 273 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 274 &u->atio, ha_locked, 0); 275 goto abort; 276 } 277 278 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 279 if (host != NULL) { 280 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 281 "Requeuing unknown ATIO_TYPE7 %p\n", u); 282 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 283 } else if (tgt->tgt_stop) { 284 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 285 "Freeing unknown %s %p, because tgt is being stopped\n", 286 "ATIO_TYPE7", u); 287 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 288 &u->atio, ha_locked, 0); 289 } else { 290 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 291 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 292 if (!queued) { 293 queued = 1; 294 schedule_delayed_work(&vha->unknown_atio_work, 295 1); 296 } 297 continue; 298 } 299 300 abort: 301 spin_lock_irqsave(&vha->cmd_list_lock, flags); 302 list_del(&u->cmd_list); 303 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 304 kfree(u); 305 } 306 } 307 308 void qlt_unknown_atio_work_fn(struct work_struct *work) 309 { 310 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 311 struct scsi_qla_host, unknown_atio_work); 312 313 qlt_try_to_dequeue_unknown_atios(vha, 0); 314 } 315 316 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 317 struct atio_from_isp *atio, uint8_t ha_locked) 318 { 319 ql_dbg(ql_dbg_tgt, vha, 0xe072, 320 "%s: qla_target(%d): type %x ox_id %04x\n", 321 __func__, vha->vp_idx, atio->u.raw.entry_type, 322 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 323 324 switch (atio->u.raw.entry_type) { 325 case ATIO_TYPE7: 326 { 327 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 328 atio->u.isp24.fcp_hdr.d_id); 329 if (unlikely(NULL == host)) { 330 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 331 "qla_target(%d): Received ATIO_TYPE7 " 332 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 333 atio->u.isp24.fcp_hdr.d_id.domain, 334 atio->u.isp24.fcp_hdr.d_id.area, 335 atio->u.isp24.fcp_hdr.d_id.al_pa); 336 337 338 qlt_queue_unknown_atio(vha, atio, ha_locked); 339 break; 340 } 341 if (unlikely(!list_empty(&vha->unknown_atio_list))) 342 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 343 344 qlt_24xx_atio_pkt(host, atio, ha_locked); 345 break; 346 } 347 348 case IMMED_NOTIFY_TYPE: 349 { 350 struct scsi_qla_host *host = vha; 351 struct imm_ntfy_from_isp *entry = 352 (struct imm_ntfy_from_isp *)atio; 353 354 qlt_issue_marker(vha, ha_locked); 355 356 if ((entry->u.isp24.vp_index != 0xFF) && 357 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 358 host = qla_find_host_by_vp_idx(vha, 359 entry->u.isp24.vp_index); 360 if (unlikely(!host)) { 361 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 362 "qla_target(%d): Received " 363 "ATIO (IMMED_NOTIFY_TYPE) " 364 "with unknown vp_index %d\n", 365 vha->vp_idx, entry->u.isp24.vp_index); 366 break; 367 } 368 } 369 qlt_24xx_atio_pkt(host, atio, ha_locked); 370 break; 371 } 372 373 case VP_RPT_ID_IOCB_TYPE: 374 qla24xx_report_id_acquisition(vha, 375 (struct vp_rpt_id_entry_24xx *)atio); 376 break; 377 378 case ABTS_RECV_24XX: 379 { 380 struct abts_recv_from_24xx *entry = 381 (struct abts_recv_from_24xx *)atio; 382 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 383 entry->vp_index); 384 unsigned long flags; 385 386 if (unlikely(!host)) { 387 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 388 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 389 "received, with unknown vp_index %d\n", 390 vha->vp_idx, entry->vp_index); 391 break; 392 } 393 if (!ha_locked) 394 spin_lock_irqsave(&host->hw->hardware_lock, flags); 395 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 396 if (!ha_locked) 397 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 398 break; 399 } 400 401 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 402 403 default: 404 ql_dbg(ql_dbg_tgt, vha, 0xe040, 405 "qla_target(%d): Received unknown ATIO atio " 406 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 407 break; 408 } 409 410 return false; 411 } 412 413 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 414 struct rsp_que *rsp, response_t *pkt) 415 { 416 switch (pkt->entry_type) { 417 case CTIO_CRC2: 418 ql_dbg(ql_dbg_tgt, vha, 0xe073, 419 "qla_target(%d):%s: CRC2 Response pkt\n", 420 vha->vp_idx, __func__); 421 fallthrough; 422 case CTIO_TYPE7: 423 { 424 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 425 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 426 entry->vp_index); 427 if (unlikely(!host)) { 428 ql_dbg(ql_dbg_tgt, vha, 0xe041, 429 "qla_target(%d): Response pkt (CTIO_TYPE7) " 430 "received, with unknown vp_index %d\n", 431 vha->vp_idx, entry->vp_index); 432 break; 433 } 434 qlt_response_pkt(host, rsp, pkt); 435 break; 436 } 437 438 case IMMED_NOTIFY_TYPE: 439 { 440 struct scsi_qla_host *host; 441 struct imm_ntfy_from_isp *entry = 442 (struct imm_ntfy_from_isp *)pkt; 443 444 host = qla_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 445 if (unlikely(!host)) { 446 ql_dbg(ql_dbg_tgt, vha, 0xe042, 447 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 448 "received, with unknown vp_index %d\n", 449 vha->vp_idx, entry->u.isp24.vp_index); 450 break; 451 } 452 qlt_response_pkt(host, rsp, pkt); 453 break; 454 } 455 456 case NOTIFY_ACK_TYPE: 457 { 458 struct scsi_qla_host *host = vha; 459 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 460 461 if (0xFF != entry->u.isp24.vp_index) { 462 host = qla_find_host_by_vp_idx(vha, 463 entry->u.isp24.vp_index); 464 if (unlikely(!host)) { 465 ql_dbg(ql_dbg_tgt, vha, 0xe043, 466 "qla_target(%d): Response " 467 "pkt (NOTIFY_ACK_TYPE) " 468 "received, with unknown " 469 "vp_index %d\n", vha->vp_idx, 470 entry->u.isp24.vp_index); 471 break; 472 } 473 } 474 qlt_response_pkt(host, rsp, pkt); 475 break; 476 } 477 478 case ABTS_RECV_24XX: 479 { 480 struct abts_recv_from_24xx *entry = 481 (struct abts_recv_from_24xx *)pkt; 482 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 483 entry->vp_index); 484 if (unlikely(!host)) { 485 ql_dbg(ql_dbg_tgt, vha, 0xe044, 486 "qla_target(%d): Response pkt " 487 "(ABTS_RECV_24XX) received, with unknown " 488 "vp_index %d\n", vha->vp_idx, entry->vp_index); 489 break; 490 } 491 qlt_response_pkt(host, rsp, pkt); 492 break; 493 } 494 495 case ABTS_RESP_24XX: 496 { 497 struct abts_resp_to_24xx *entry = 498 (struct abts_resp_to_24xx *)pkt; 499 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 500 entry->vp_index); 501 if (unlikely(!host)) { 502 ql_dbg(ql_dbg_tgt, vha, 0xe045, 503 "qla_target(%d): Response pkt " 504 "(ABTS_RECV_24XX) received, with unknown " 505 "vp_index %d\n", vha->vp_idx, entry->vp_index); 506 break; 507 } 508 qlt_response_pkt(host, rsp, pkt); 509 break; 510 } 511 default: 512 qlt_response_pkt(vha, rsp, pkt); 513 break; 514 } 515 516 } 517 518 /* 519 * All qlt_plogi_ack_t operations are protected by hardware_lock 520 */ 521 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 522 struct imm_ntfy_from_isp *ntfy, int type) 523 { 524 struct qla_work_evt *e; 525 526 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 527 if (!e) 528 return QLA_FUNCTION_FAILED; 529 530 e->u.nack.fcport = fcport; 531 e->u.nack.type = type; 532 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 533 return qla2x00_post_work(vha, e); 534 } 535 536 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 537 { 538 struct scsi_qla_host *vha = sp->vha; 539 unsigned long flags; 540 541 ql_dbg(ql_dbg_disc, vha, 0x20f2, 542 "Async done-%s res %x %8phC type %d\n", 543 sp->name, res, sp->fcport->port_name, sp->type); 544 545 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 546 sp->fcport->flags &= ~FCF_ASYNC_SENT; 547 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 548 549 switch (sp->type) { 550 case SRB_NACK_PLOGI: 551 sp->fcport->login_gen++; 552 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 553 sp->fcport->logout_on_delete = 1; 554 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 555 sp->fcport->send_els_logo = 0; 556 557 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 558 ql_dbg(ql_dbg_edif, vha, 0x20ef, 559 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 560 sp->fcport->port_name); 561 qla2x00_set_fcport_disc_state(sp->fcport, 562 DSC_LOGIN_AUTH_PEND); 563 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 564 sp->fcport->d_id.b24); 565 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 566 0, sp->fcport); 567 } 568 break; 569 570 case SRB_NACK_PRLI: 571 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 572 sp->fcport->deleted = 0; 573 sp->fcport->send_els_logo = 0; 574 575 if (!sp->fcport->login_succ && 576 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 577 sp->fcport->login_succ = 1; 578 579 vha->fcport_count++; 580 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 581 qla24xx_sched_upd_fcport(sp->fcport); 582 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 583 } else { 584 sp->fcport->login_retry = 0; 585 qla2x00_set_fcport_disc_state(sp->fcport, 586 DSC_LOGIN_COMPLETE); 587 sp->fcport->deleted = 0; 588 sp->fcport->logout_on_delete = 1; 589 } 590 break; 591 592 case SRB_NACK_LOGO: 593 sp->fcport->login_gen++; 594 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 595 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 596 break; 597 } 598 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 599 600 kref_put(&sp->cmd_kref, qla2x00_sp_release); 601 } 602 603 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 604 struct imm_ntfy_from_isp *ntfy, int type) 605 { 606 int rval = QLA_FUNCTION_FAILED; 607 srb_t *sp; 608 char *c = NULL; 609 610 fcport->flags |= FCF_ASYNC_SENT; 611 switch (type) { 612 case SRB_NACK_PLOGI: 613 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 614 c = "PLOGI"; 615 if (vha->hw->flags.edif_enabled && 616 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) 617 fcport->flags |= FCF_FCSP_DEVICE; 618 break; 619 case SRB_NACK_PRLI: 620 fcport->fw_login_state = DSC_LS_PRLI_PEND; 621 fcport->deleted = 0; 622 c = "PRLI"; 623 break; 624 case SRB_NACK_LOGO: 625 fcport->fw_login_state = DSC_LS_LOGO_PEND; 626 c = "LOGO"; 627 break; 628 } 629 630 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 631 if (!sp) 632 goto done; 633 634 sp->type = type; 635 sp->name = "nack"; 636 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, 637 qla2x00_async_nack_sp_done); 638 639 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 640 641 ql_dbg(ql_dbg_disc, vha, 0x20f4, 642 "Async-%s %8phC hndl %x %s\n", 643 sp->name, fcport->port_name, sp->handle, c); 644 645 rval = qla2x00_start_sp(sp); 646 if (rval != QLA_SUCCESS) 647 goto done_free_sp; 648 649 return rval; 650 651 done_free_sp: 652 kref_put(&sp->cmd_kref, qla2x00_sp_release); 653 done: 654 fcport->flags &= ~FCF_ASYNC_SENT; 655 return rval; 656 } 657 658 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 659 { 660 fc_port_t *t; 661 662 switch (e->u.nack.type) { 663 case SRB_NACK_PRLI: 664 t = e->u.nack.fcport; 665 flush_work(&t->del_work); 666 flush_work(&t->free_work); 667 mutex_lock(&vha->vha_tgt.tgt_mutex); 668 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 669 mutex_unlock(&vha->vha_tgt.tgt_mutex); 670 if (t) { 671 ql_log(ql_log_info, vha, 0xd034, 672 "%s create sess success %p", __func__, t); 673 /* create sess has an extra kref */ 674 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 675 } 676 break; 677 } 678 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 679 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 680 } 681 682 void qla24xx_delete_sess_fn(struct work_struct *work) 683 { 684 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 685 struct qla_hw_data *ha = NULL; 686 687 if (!fcport || !fcport->vha || !fcport->vha->hw) 688 return; 689 690 ha = fcport->vha->hw; 691 692 if (fcport->se_sess) { 693 ha->tgt.tgt_ops->shutdown_sess(fcport); 694 ha->tgt.tgt_ops->put_sess(fcport); 695 } else { 696 qlt_unreg_sess(fcport); 697 } 698 } 699 700 /* 701 * Called from qla2x00_reg_remote_port() 702 */ 703 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 704 { 705 struct qla_hw_data *ha = vha->hw; 706 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 707 struct fc_port *sess = fcport; 708 unsigned long flags; 709 710 if (!vha->hw->tgt.tgt_ops) 711 return; 712 713 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 714 if (tgt->tgt_stop) { 715 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 716 return; 717 } 718 719 if (fcport->disc_state == DSC_DELETE_PEND) { 720 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 721 return; 722 } 723 724 if (!sess->se_sess) { 725 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 726 727 mutex_lock(&vha->vha_tgt.tgt_mutex); 728 sess = qlt_create_sess(vha, fcport, false); 729 mutex_unlock(&vha->vha_tgt.tgt_mutex); 730 731 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 732 } else { 733 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 734 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 735 return; 736 } 737 738 if (!kref_get_unless_zero(&sess->sess_kref)) { 739 ql_dbg(ql_dbg_disc, vha, 0x2107, 740 "%s: kref_get fail sess %8phC \n", 741 __func__, sess->port_name); 742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 743 return; 744 } 745 746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 747 "qla_target(%u): %ssession for port %8phC " 748 "(loop ID %d) reappeared\n", vha->vp_idx, 749 sess->local ? "local " : "", sess->port_name, sess->loop_id); 750 751 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 752 "Reappeared sess %p\n", sess); 753 754 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 755 fcport->loop_id, 756 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 757 } 758 759 if (sess && sess->local) { 760 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 761 "qla_target(%u): local session for " 762 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 763 fcport->port_name, sess->loop_id); 764 sess->local = 0; 765 } 766 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 767 768 ha->tgt.tgt_ops->put_sess(sess); 769 } 770 771 /* 772 * This is a zero-base ref-counting solution, since hardware_lock 773 * guarantees that ref_count is not modified concurrently. 774 * Upon successful return content of iocb is undefined 775 */ 776 static struct qlt_plogi_ack_t * 777 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 778 struct imm_ntfy_from_isp *iocb) 779 { 780 struct qlt_plogi_ack_t *pla; 781 782 lockdep_assert_held(&vha->hw->hardware_lock); 783 784 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 785 if (pla->id.b24 == id->b24) { 786 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 787 "%s %d %8phC Term INOT due to new INOT", 788 __func__, __LINE__, 789 pla->iocb.u.isp24.port_name); 790 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 791 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 792 return pla; 793 } 794 } 795 796 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 797 if (!pla) { 798 ql_dbg(ql_dbg_async, vha, 0x5088, 799 "qla_target(%d): Allocation of plogi_ack failed\n", 800 vha->vp_idx); 801 return NULL; 802 } 803 804 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 805 pla->id = *id; 806 list_add_tail(&pla->list, &vha->plogi_ack_list); 807 808 return pla; 809 } 810 811 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 812 struct qlt_plogi_ack_t *pla) 813 { 814 struct imm_ntfy_from_isp *iocb = &pla->iocb; 815 port_id_t port_id; 816 uint16_t loop_id; 817 fc_port_t *fcport = pla->fcport; 818 819 BUG_ON(!pla->ref_count); 820 pla->ref_count--; 821 822 if (pla->ref_count) 823 return; 824 825 ql_dbg(ql_dbg_disc, vha, 0x5089, 826 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 827 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 828 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 829 iocb->u.isp24.port_id[0], 830 le16_to_cpu(iocb->u.isp24.nport_handle), 831 iocb->u.isp24.exchange_address, iocb->ox_id); 832 833 port_id.b.domain = iocb->u.isp24.port_id[2]; 834 port_id.b.area = iocb->u.isp24.port_id[1]; 835 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 836 port_id.b.rsvd_1 = 0; 837 838 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 839 840 fcport->loop_id = loop_id; 841 fcport->d_id = port_id; 842 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 843 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 844 else 845 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 846 847 list_for_each_entry(fcport, &vha->vp_fcports, list) { 848 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 849 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 850 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 851 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 852 } 853 854 list_del(&pla->list); 855 kmem_cache_free(qla_tgt_plogi_cachep, pla); 856 } 857 858 void 859 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 860 struct fc_port *sess, enum qlt_plogi_link_t link) 861 { 862 struct imm_ntfy_from_isp *iocb = &pla->iocb; 863 /* Inc ref_count first because link might already be pointing at pla */ 864 pla->ref_count++; 865 866 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 867 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 868 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 869 sess, link, sess->port_name, 870 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 871 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 872 pla->ref_count, pla, link); 873 874 if (link == QLT_PLOGI_LINK_CONFLICT) { 875 switch (sess->disc_state) { 876 case DSC_DELETED: 877 case DSC_DELETE_PEND: 878 pla->ref_count--; 879 return; 880 default: 881 break; 882 } 883 } 884 885 if (sess->plogi_link[link]) 886 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 887 888 if (link == QLT_PLOGI_LINK_SAME_WWN) 889 pla->fcport = sess; 890 891 sess->plogi_link[link] = pla; 892 } 893 894 typedef struct { 895 /* These fields must be initialized by the caller */ 896 port_id_t id; 897 /* 898 * number of cmds dropped while we were waiting for 899 * initiator to ack LOGO initialize to 1 if LOGO is 900 * triggered by a command, otherwise, to 0 901 */ 902 int cmd_count; 903 904 /* These fields are used by callee */ 905 struct list_head list; 906 } qlt_port_logo_t; 907 908 static void 909 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 910 { 911 qlt_port_logo_t *tmp; 912 int res; 913 914 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 915 res = 0; 916 goto out; 917 } 918 919 mutex_lock(&vha->vha_tgt.tgt_mutex); 920 921 list_for_each_entry(tmp, &vha->logo_list, list) { 922 if (tmp->id.b24 == logo->id.b24) { 923 tmp->cmd_count += logo->cmd_count; 924 mutex_unlock(&vha->vha_tgt.tgt_mutex); 925 return; 926 } 927 } 928 929 list_add_tail(&logo->list, &vha->logo_list); 930 931 mutex_unlock(&vha->vha_tgt.tgt_mutex); 932 933 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 934 935 mutex_lock(&vha->vha_tgt.tgt_mutex); 936 list_del(&logo->list); 937 mutex_unlock(&vha->vha_tgt.tgt_mutex); 938 939 out: 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 943 logo->cmd_count, res); 944 } 945 946 void qlt_free_session_done(struct work_struct *work) 947 { 948 struct fc_port *sess = container_of(work, struct fc_port, 949 free_work); 950 struct qla_tgt *tgt = sess->tgt; 951 struct scsi_qla_host *vha = sess->vha; 952 struct qla_hw_data *ha = vha->hw; 953 unsigned long flags; 954 bool logout_started = false; 955 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 956 struct qlt_plogi_ack_t *own = 957 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 958 959 ql_dbg(ql_dbg_disc, vha, 0xf084, 960 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 961 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 962 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 963 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 964 sess->logout_on_delete, sess->keep_nport_handle, 965 sess->send_els_logo); 966 967 if (!IS_SW_RESV_ADDR(sess->d_id)) { 968 qla2x00_mark_device_lost(vha, sess, 0); 969 970 if (sess->send_els_logo) { 971 qlt_port_logo_t logo; 972 973 logo.id = sess->d_id; 974 logo.cmd_count = 0; 975 INIT_LIST_HEAD(&logo.list); 976 if (!own) 977 qlt_send_first_logo(vha, &logo); 978 sess->send_els_logo = 0; 979 } 980 981 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 982 int rc; 983 984 if (!own || 985 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 986 sess->logout_completed = 0; 987 rc = qla2x00_post_async_logout_work(vha, sess, 988 NULL); 989 if (rc != QLA_SUCCESS) 990 ql_log(ql_log_warn, vha, 0xf085, 991 "Schedule logo failed sess %p rc %d\n", 992 sess, rc); 993 else 994 logout_started = true; 995 } else if (own && (own->iocb.u.isp24.status_subcode == 996 ELS_PRLI) && ha->flags.rida_fmt2) { 997 rc = qla2x00_post_async_prlo_work(vha, sess, 998 NULL); 999 if (rc != QLA_SUCCESS) 1000 ql_log(ql_log_warn, vha, 0xf085, 1001 "Schedule PRLO failed sess %p rc %d\n", 1002 sess, rc); 1003 else 1004 logout_started = true; 1005 } 1006 } /* if sess->logout_on_delete */ 1007 1008 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1009 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1010 sess->nvme_flag |= NVME_FLAG_DELETING; 1011 qla_nvme_unregister_remote_port(sess); 1012 } 1013 1014 if (ha->flags.edif_enabled && 1015 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1016 sess->edif.authok = 0; 1017 if (!ha->flags.host_shutting_down) { 1018 ql_dbg(ql_dbg_edif, vha, 0x911e, 1019 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 1020 __func__, sess->port_name); 1021 qla2x00_release_all_sadb(vha, sess); 1022 } else { 1023 ql_dbg(ql_dbg_edif, vha, 0x911e, 1024 "%s bypassing release_all_sadb\n", 1025 __func__); 1026 } 1027 1028 qla_edif_clear_appdata(vha, sess); 1029 qla_edif_sess_down(vha, sess); 1030 } 1031 } 1032 1033 /* 1034 * Release the target session for FC Nexus from fabric module code. 1035 */ 1036 if (sess->se_sess != NULL) 1037 ha->tgt.tgt_ops->free_session(sess); 1038 1039 if (logout_started) { 1040 bool traced = false; 1041 u16 cnt = 0; 1042 1043 while (!READ_ONCE(sess->logout_completed)) { 1044 if (!traced) { 1045 ql_dbg(ql_dbg_disc, vha, 0xf086, 1046 "%s: waiting for sess %p logout\n", 1047 __func__, sess); 1048 traced = true; 1049 } 1050 msleep(100); 1051 cnt++; 1052 /* 1053 * Driver timeout is set to 22 Sec, update count value to loop 1054 * long enough for log-out to complete before advancing. Otherwise, 1055 * straddling logout can interfere with re-login attempt. 1056 */ 1057 if (cnt > 230) 1058 break; 1059 } 1060 1061 ql_dbg(ql_dbg_disc, vha, 0xf087, 1062 "%s: sess %p logout completed\n", __func__, sess); 1063 } 1064 1065 /* check for any straggling io left behind */ 1066 if (!(sess->flags & FCF_FCP2_DEVICE) && 1067 qla2x00_eh_wait_for_pending_commands(sess->vha, sess->d_id.b24, 0, WAIT_TARGET)) { 1068 ql_log(ql_log_warn, vha, 0x3027, 1069 "IO not return. Resetting.\n"); 1070 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1071 qla2xxx_wake_dpc(vha); 1072 qla2x00_wait_for_chip_reset(vha); 1073 } 1074 1075 if (sess->logo_ack_needed) { 1076 sess->logo_ack_needed = 0; 1077 qla24xx_async_notify_ack(vha, sess, 1078 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1079 } 1080 1081 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1082 if (sess->se_sess) { 1083 sess->se_sess = NULL; 1084 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1085 tgt->sess_count--; 1086 } 1087 1088 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1089 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1090 1091 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1092 vha->fcport_count--; 1093 sess->login_succ = 0; 1094 } 1095 1096 qla2x00_clear_loop_id(sess); 1097 1098 if (sess->conflict) { 1099 sess->conflict->login_pause = 0; 1100 sess->conflict = NULL; 1101 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1102 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1103 } 1104 1105 { 1106 struct qlt_plogi_ack_t *con = 1107 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1108 struct imm_ntfy_from_isp *iocb; 1109 1110 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1111 1112 if (con) { 1113 iocb = &con->iocb; 1114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1115 "se_sess %p / sess %p port %8phC is gone," 1116 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1117 sess->se_sess, sess, sess->port_name, 1118 own ? "releasing own PLOGI" : "no own PLOGI pending", 1119 own ? own->ref_count : -1, 1120 iocb->u.isp24.port_name, con->ref_count); 1121 qlt_plogi_ack_unref(vha, con); 1122 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1123 } else { 1124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1125 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1126 sess->se_sess, sess, sess->port_name, 1127 own ? "releasing own PLOGI" : 1128 "no own PLOGI pending", 1129 own ? own->ref_count : -1); 1130 } 1131 1132 if (own) { 1133 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1134 qlt_plogi_ack_unref(vha, own); 1135 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1136 } 1137 } 1138 1139 sess->explicit_logout = 0; 1140 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1141 1142 qla2x00_dfs_remove_rport(vha, sess); 1143 1144 spin_lock_irqsave(&vha->work_lock, flags); 1145 sess->flags &= ~FCF_ASYNC_SENT; 1146 sess->deleted = QLA_SESS_DELETED; 1147 sess->free_pending = 0; 1148 spin_unlock_irqrestore(&vha->work_lock, flags); 1149 1150 ql_dbg(ql_dbg_disc, vha, 0xf001, 1151 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1152 sess, sess->port_name, vha->fcport_count); 1153 1154 if (tgt && (tgt->sess_count == 0)) 1155 wake_up_all(&tgt->waitQ); 1156 1157 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1158 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1159 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1160 switch (vha->host->active_mode) { 1161 case MODE_INITIATOR: 1162 case MODE_DUAL: 1163 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1164 qla2xxx_wake_dpc(vha); 1165 break; 1166 case MODE_TARGET: 1167 default: 1168 /* no-op */ 1169 break; 1170 } 1171 } 1172 1173 if (vha->fcport_count == 0) 1174 wake_up_all(&vha->fcport_waitQ); 1175 } 1176 1177 /* ha->tgt.sess_lock supposed to be held on entry */ 1178 void qlt_unreg_sess(struct fc_port *sess) 1179 { 1180 struct scsi_qla_host *vha = sess->vha; 1181 unsigned long flags; 1182 1183 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1184 "%s sess %p for deletion %8phC\n", 1185 __func__, sess, sess->port_name); 1186 1187 spin_lock_irqsave(&sess->vha->work_lock, flags); 1188 if (sess->free_pending) { 1189 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1190 return; 1191 } 1192 sess->free_pending = 1; 1193 /* 1194 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1195 * management from being sent. 1196 */ 1197 sess->flags |= FCF_ASYNC_SENT; 1198 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1199 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1200 1201 if (sess->se_sess) 1202 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1203 1204 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1205 sess->last_rscn_gen = sess->rscn_gen; 1206 sess->last_login_gen = sess->login_gen; 1207 1208 queue_work(sess->vha->hw->wq, &sess->free_work); 1209 } 1210 EXPORT_SYMBOL(qlt_unreg_sess); 1211 1212 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1213 { 1214 struct qla_hw_data *ha = vha->hw; 1215 struct fc_port *sess = NULL; 1216 uint16_t loop_id; 1217 int res = 0; 1218 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1219 unsigned long flags; 1220 1221 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1222 if (loop_id == 0xFFFF) { 1223 /* Global event */ 1224 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1225 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1226 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1227 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1228 } else { 1229 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1230 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1232 } 1233 1234 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1235 "Using sess for qla_tgt_reset: %p\n", sess); 1236 if (!sess) { 1237 res = -ESRCH; 1238 return res; 1239 } 1240 1241 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1242 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1243 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1244 mcmd, loop_id); 1245 1246 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1247 } 1248 1249 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1250 { 1251 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1252 sess->logout_on_delete = 0; 1253 sess->logo_ack_needed = 0; 1254 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1255 } 1256 } 1257 1258 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1259 { 1260 struct qla_tgt *tgt = sess->tgt; 1261 unsigned long flags; 1262 u16 sec; 1263 1264 switch (sess->disc_state) { 1265 case DSC_DELETE_PEND: 1266 return; 1267 case DSC_DELETED: 1268 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1269 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1270 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1271 wake_up_all(&tgt->waitQ); 1272 1273 if (sess->vha->fcport_count == 0) 1274 wake_up_all(&sess->vha->fcport_waitQ); 1275 return; 1276 } 1277 break; 1278 case DSC_UPD_FCPORT: 1279 /* 1280 * This port is not done reporting to upper layer. 1281 * let it finish 1282 */ 1283 sess->next_disc_state = DSC_DELETE_PEND; 1284 sec = jiffies_to_msecs(jiffies - 1285 sess->jiffies_at_registration)/1000; 1286 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1287 sess->sec_since_registration = sec; 1288 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1289 "%s %8phC : Slow Rport registration(%d Sec)\n", 1290 __func__, sess->port_name, sec); 1291 } 1292 return; 1293 default: 1294 break; 1295 } 1296 1297 spin_lock_irqsave(&sess->vha->work_lock, flags); 1298 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1299 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1300 return; 1301 } 1302 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1303 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1304 1305 sess->prli_pend_timer = 0; 1306 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1307 1308 qla24xx_chk_fcp_state(sess); 1309 1310 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1311 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1312 sess, sess->port_name, sess->fc4_type); 1313 1314 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1315 } 1316 1317 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1318 { 1319 struct fc_port *sess; 1320 scsi_qla_host_t *vha = tgt->vha; 1321 1322 list_for_each_entry(sess, &vha->vp_fcports, list) { 1323 if (sess->se_sess) 1324 qlt_schedule_sess_for_deletion(sess); 1325 } 1326 1327 /* At this point tgt could be already dead */ 1328 } 1329 1330 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1331 uint16_t *loop_id) 1332 { 1333 struct qla_hw_data *ha = vha->hw; 1334 dma_addr_t gid_list_dma; 1335 struct gid_list_info *gid_list, *gid; 1336 int res, rc, i; 1337 uint16_t entries; 1338 1339 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1340 &gid_list_dma, GFP_KERNEL); 1341 if (!gid_list) { 1342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1343 "qla_target(%d): DMA Alloc failed of %u\n", 1344 vha->vp_idx, qla2x00_gid_list_size(ha)); 1345 return -ENOMEM; 1346 } 1347 1348 /* Get list of logged in devices */ 1349 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1350 if (rc != QLA_SUCCESS) { 1351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1352 "qla_target(%d): get_id_list() failed: %x\n", 1353 vha->vp_idx, rc); 1354 res = -EBUSY; 1355 goto out_free_id_list; 1356 } 1357 1358 gid = gid_list; 1359 res = -ENOENT; 1360 for (i = 0; i < entries; i++) { 1361 if (gid->al_pa == s_id.al_pa && 1362 gid->area == s_id.area && 1363 gid->domain == s_id.domain) { 1364 *loop_id = le16_to_cpu(gid->loop_id); 1365 res = 0; 1366 break; 1367 } 1368 gid = (void *)gid + ha->gid_list_info_size; 1369 } 1370 1371 out_free_id_list: 1372 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1373 gid_list, gid_list_dma); 1374 return res; 1375 } 1376 1377 /* 1378 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1379 * Caller must put it. 1380 */ 1381 static struct fc_port *qlt_create_sess( 1382 struct scsi_qla_host *vha, 1383 fc_port_t *fcport, 1384 bool local) 1385 { 1386 struct qla_hw_data *ha = vha->hw; 1387 struct fc_port *sess = fcport; 1388 unsigned long flags; 1389 1390 if (vha->vha_tgt.qla_tgt->tgt_stop) 1391 return NULL; 1392 1393 if (fcport->se_sess) { 1394 if (!kref_get_unless_zero(&sess->sess_kref)) { 1395 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1396 "%s: kref_get_unless_zero failed for %8phC\n", 1397 __func__, sess->port_name); 1398 return NULL; 1399 } 1400 return fcport; 1401 } 1402 sess->tgt = vha->vha_tgt.qla_tgt; 1403 sess->local = local; 1404 1405 /* 1406 * Under normal circumstances we want to logout from firmware when 1407 * session eventually ends and release corresponding nport handle. 1408 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1409 * code will adjust these flags as necessary. 1410 */ 1411 sess->logout_on_delete = 1; 1412 sess->keep_nport_handle = 0; 1413 sess->logout_completed = 0; 1414 1415 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1416 &fcport->port_name[0], sess) < 0) { 1417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1418 "(%d) %8phC check_initiator_node_acl failed\n", 1419 vha->vp_idx, fcport->port_name); 1420 return NULL; 1421 } else { 1422 kref_init(&fcport->sess_kref); 1423 /* 1424 * Take an extra reference to ->sess_kref here to handle 1425 * fc_port access across ->tgt.sess_lock reaquire. 1426 */ 1427 if (!kref_get_unless_zero(&sess->sess_kref)) { 1428 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1429 "%s: kref_get_unless_zero failed for %8phC\n", 1430 __func__, sess->port_name); 1431 return NULL; 1432 } 1433 1434 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1435 if (!IS_SW_RESV_ADDR(sess->d_id)) 1436 vha->vha_tgt.qla_tgt->sess_count++; 1437 1438 qlt_do_generation_tick(vha, &sess->generation); 1439 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1440 } 1441 1442 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1443 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1444 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1445 vha->vha_tgt.qla_tgt->sess_count); 1446 1447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1448 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1449 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1450 vha->vp_idx, local ? "local " : "", fcport->port_name, 1451 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1452 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1453 1454 return sess; 1455 } 1456 1457 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1458 { 1459 struct qla_hw_data *ha = tgt->ha; 1460 unsigned long flags; 1461 int res; 1462 /* 1463 * We need to protect against race, when tgt is freed before or 1464 * inside wake_up() 1465 */ 1466 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1467 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1468 "tgt %p, sess_count=%d\n", 1469 tgt, tgt->sess_count); 1470 res = (tgt->sess_count == 0); 1471 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1472 1473 return res; 1474 } 1475 1476 /* Called by tcm_qla2xxx configfs code */ 1477 int qlt_stop_phase1(struct qla_tgt *tgt) 1478 { 1479 struct scsi_qla_host *vha = tgt->vha; 1480 struct qla_hw_data *ha = tgt->ha; 1481 unsigned long flags; 1482 1483 mutex_lock(&ha->optrom_mutex); 1484 mutex_lock(&qla_tgt_mutex); 1485 1486 if (tgt->tgt_stop || tgt->tgt_stopped) { 1487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1488 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1489 mutex_unlock(&qla_tgt_mutex); 1490 mutex_unlock(&ha->optrom_mutex); 1491 return -EPERM; 1492 } 1493 1494 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1495 vha->host_no, vha); 1496 /* 1497 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1498 * Lock is needed, because we still can get an incoming packet. 1499 */ 1500 mutex_lock(&vha->vha_tgt.tgt_mutex); 1501 tgt->tgt_stop = 1; 1502 qlt_clear_tgt_db(tgt); 1503 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1504 mutex_unlock(&qla_tgt_mutex); 1505 1506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1507 "Waiting for sess works (tgt %p)", tgt); 1508 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1509 do { 1510 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1511 flush_work(&tgt->sess_work); 1512 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1513 } while (!list_empty(&tgt->sess_works_list)); 1514 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1515 1516 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1517 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1518 1519 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1520 1521 /* Big hammer */ 1522 if (!ha->flags.host_shutting_down && 1523 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1524 qlt_disable_vha(vha); 1525 1526 /* Wait for sessions to clear out (just in case) */ 1527 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1528 mutex_unlock(&ha->optrom_mutex); 1529 1530 return 0; 1531 } 1532 EXPORT_SYMBOL(qlt_stop_phase1); 1533 1534 /* Called by tcm_qla2xxx configfs code */ 1535 void qlt_stop_phase2(struct qla_tgt *tgt) 1536 { 1537 scsi_qla_host_t *vha = tgt->vha; 1538 1539 if (tgt->tgt_stopped) { 1540 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1541 "Already in tgt->tgt_stopped state\n"); 1542 dump_stack(); 1543 return; 1544 } 1545 if (!tgt->tgt_stop) { 1546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1547 "%s: phase1 stop is not completed\n", __func__); 1548 dump_stack(); 1549 return; 1550 } 1551 1552 mutex_lock(&tgt->ha->optrom_mutex); 1553 mutex_lock(&vha->vha_tgt.tgt_mutex); 1554 tgt->tgt_stop = 0; 1555 tgt->tgt_stopped = 1; 1556 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1557 mutex_unlock(&tgt->ha->optrom_mutex); 1558 1559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1560 tgt); 1561 1562 switch (vha->qlini_mode) { 1563 case QLA2XXX_INI_MODE_EXCLUSIVE: 1564 vha->flags.online = 1; 1565 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1566 break; 1567 default: 1568 break; 1569 } 1570 } 1571 EXPORT_SYMBOL(qlt_stop_phase2); 1572 1573 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1574 static void qlt_release(struct qla_tgt *tgt) 1575 { 1576 scsi_qla_host_t *vha = tgt->vha; 1577 void *node; 1578 u64 key = 0; 1579 u16 i; 1580 struct qla_qpair_hint *h; 1581 struct qla_hw_data *ha = vha->hw; 1582 1583 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1584 qlt_stop_phase1(tgt); 1585 1586 if (!tgt->tgt_stopped) 1587 qlt_stop_phase2(tgt); 1588 1589 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1590 unsigned long flags; 1591 1592 h = &tgt->qphints[i]; 1593 if (h->qpair) { 1594 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1595 list_del(&h->hint_elem); 1596 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1597 h->qpair = NULL; 1598 } 1599 } 1600 kfree(tgt->qphints); 1601 mutex_lock(&qla_tgt_mutex); 1602 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1603 mutex_unlock(&qla_tgt_mutex); 1604 1605 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1606 btree_remove64(&tgt->lun_qpair_map, key); 1607 1608 btree_destroy64(&tgt->lun_qpair_map); 1609 1610 if (vha->vp_idx) 1611 if (ha->tgt.tgt_ops && 1612 ha->tgt.tgt_ops->remove_target && 1613 vha->vha_tgt.target_lport_ptr) 1614 ha->tgt.tgt_ops->remove_target(vha); 1615 1616 vha->vha_tgt.qla_tgt = NULL; 1617 1618 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1619 "Release of tgt %p finished\n", tgt); 1620 1621 kfree(tgt); 1622 } 1623 1624 /* ha->hardware_lock supposed to be held on entry */ 1625 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1626 const void *param, unsigned int param_size) 1627 { 1628 struct qla_tgt_sess_work_param *prm; 1629 unsigned long flags; 1630 1631 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1632 if (!prm) { 1633 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1634 "qla_target(%d): Unable to create session " 1635 "work, command will be refused", 0); 1636 return -ENOMEM; 1637 } 1638 1639 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1640 "Scheduling work (type %d, prm %p)" 1641 " to find session for param %p (size %d, tgt %p)\n", 1642 type, prm, param, param_size, tgt); 1643 1644 prm->type = type; 1645 memcpy(&prm->tm_iocb, param, param_size); 1646 1647 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1648 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1649 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1650 1651 schedule_work(&tgt->sess_work); 1652 1653 return 0; 1654 } 1655 1656 /* 1657 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1658 */ 1659 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1660 struct imm_ntfy_from_isp *ntfy, 1661 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1662 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1663 { 1664 struct scsi_qla_host *vha = qpair->vha; 1665 struct qla_hw_data *ha = vha->hw; 1666 request_t *pkt; 1667 struct nack_to_isp *nack; 1668 1669 if (!ha->flags.fw_started) 1670 return; 1671 1672 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1673 1674 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1675 if (!pkt) { 1676 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1677 "qla_target(%d): %s failed: unable to allocate " 1678 "request packet\n", vha->vp_idx, __func__); 1679 return; 1680 } 1681 1682 if (vha->vha_tgt.qla_tgt != NULL) 1683 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1684 1685 pkt->entry_type = NOTIFY_ACK_TYPE; 1686 pkt->entry_count = 1; 1687 1688 nack = (struct nack_to_isp *)pkt; 1689 nack->ox_id = ntfy->ox_id; 1690 1691 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1692 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1693 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1694 nack->u.isp24.flags = ntfy->u.isp24.flags & 1695 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1696 } 1697 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1698 nack->u.isp24.status = ntfy->u.isp24.status; 1699 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1700 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1701 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1702 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1703 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1704 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1705 nack->u.isp24.srr_reject_code = srr_reject_code; 1706 nack->u.isp24.srr_reject_code_expl = srr_explan; 1707 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1708 1709 /* TODO qualify this with EDIF enable */ 1710 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1711 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1712 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1713 } 1714 1715 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1716 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1717 vha->vp_idx, nack->u.isp24.status); 1718 1719 /* Memory Barrier */ 1720 wmb(); 1721 qla2x00_start_iocbs(vha, qpair->req); 1722 } 1723 1724 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1725 { 1726 struct scsi_qla_host *vha = mcmd->vha; 1727 struct qla_hw_data *ha = vha->hw; 1728 struct abts_resp_to_24xx *resp; 1729 __le32 f_ctl; 1730 uint32_t h; 1731 uint8_t *p; 1732 int rc; 1733 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1734 struct qla_qpair *qpair = mcmd->qpair; 1735 1736 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1737 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1738 ha, mcmd->fc_tm_rsp); 1739 1740 rc = qlt_check_reserve_free_req(qpair, 1); 1741 if (rc) { 1742 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1743 "qla_target(%d): %s failed: unable to allocate request packet\n", 1744 vha->vp_idx, __func__); 1745 return -EAGAIN; 1746 } 1747 1748 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1749 memset(resp, 0, sizeof(*resp)); 1750 1751 h = qlt_make_handle(qpair); 1752 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1753 /* 1754 * CTIO type 7 from the firmware doesn't provide a way to 1755 * know the initiator's LOOP ID, hence we can't find 1756 * the session and, so, the command. 1757 */ 1758 return -EAGAIN; 1759 } else { 1760 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1761 } 1762 1763 resp->handle = make_handle(qpair->req->id, h); 1764 resp->entry_type = ABTS_RESP_24XX; 1765 resp->entry_count = 1; 1766 resp->nport_handle = abts->nport_handle; 1767 resp->vp_index = vha->vp_idx; 1768 resp->sof_type = abts->sof_type; 1769 resp->exchange_address = abts->exchange_address; 1770 resp->fcp_hdr_le = abts->fcp_hdr_le; 1771 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1772 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1773 F_CTL_SEQ_INITIATIVE); 1774 p = (uint8_t *)&f_ctl; 1775 resp->fcp_hdr_le.f_ctl[0] = *p++; 1776 resp->fcp_hdr_le.f_ctl[1] = *p++; 1777 resp->fcp_hdr_le.f_ctl[2] = *p; 1778 1779 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1780 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1781 1782 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1783 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1784 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1785 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1786 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1787 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1788 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1789 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1790 } else { 1791 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1792 resp->payload.ba_rjt.reason_code = 1793 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1794 /* Other bytes are zero */ 1795 } 1796 1797 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1798 1799 /* Memory Barrier */ 1800 wmb(); 1801 if (qpair->reqq_start_iocbs) 1802 qpair->reqq_start_iocbs(qpair); 1803 else 1804 qla2x00_start_iocbs(vha, qpair->req); 1805 1806 return rc; 1807 } 1808 1809 /* 1810 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1811 */ 1812 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1813 struct abts_recv_from_24xx *abts, uint32_t status, 1814 bool ids_reversed) 1815 { 1816 struct scsi_qla_host *vha = qpair->vha; 1817 struct qla_hw_data *ha = vha->hw; 1818 struct abts_resp_to_24xx *resp; 1819 __le32 f_ctl; 1820 uint8_t *p; 1821 1822 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1823 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1824 ha, abts, status); 1825 1826 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1827 NULL); 1828 if (!resp) { 1829 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1830 "qla_target(%d): %s failed: unable to allocate " 1831 "request packet", vha->vp_idx, __func__); 1832 return; 1833 } 1834 1835 resp->entry_type = ABTS_RESP_24XX; 1836 resp->handle = QLA_TGT_SKIP_HANDLE; 1837 resp->entry_count = 1; 1838 resp->nport_handle = abts->nport_handle; 1839 resp->vp_index = vha->vp_idx; 1840 resp->sof_type = abts->sof_type; 1841 resp->exchange_address = abts->exchange_address; 1842 resp->fcp_hdr_le = abts->fcp_hdr_le; 1843 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1844 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1845 F_CTL_SEQ_INITIATIVE); 1846 p = (uint8_t *)&f_ctl; 1847 resp->fcp_hdr_le.f_ctl[0] = *p++; 1848 resp->fcp_hdr_le.f_ctl[1] = *p++; 1849 resp->fcp_hdr_le.f_ctl[2] = *p; 1850 if (ids_reversed) { 1851 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1852 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1853 } else { 1854 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1855 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1856 } 1857 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1858 if (status == FCP_TMF_CMPL) { 1859 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1860 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1861 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1862 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1863 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1864 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1865 } else { 1866 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1867 resp->payload.ba_rjt.reason_code = 1868 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1869 /* Other bytes are zero */ 1870 } 1871 1872 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1873 1874 /* Memory Barrier */ 1875 wmb(); 1876 if (qpair->reqq_start_iocbs) 1877 qpair->reqq_start_iocbs(qpair); 1878 else 1879 qla2x00_start_iocbs(vha, qpair->req); 1880 } 1881 1882 /* 1883 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1884 */ 1885 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1886 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1887 { 1888 struct ctio7_to_24xx *ctio; 1889 u16 tmp; 1890 struct abts_recv_from_24xx *entry; 1891 1892 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1893 if (ctio == NULL) { 1894 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1895 "qla_target(%d): %s failed: unable to allocate " 1896 "request packet\n", vha->vp_idx, __func__); 1897 return; 1898 } 1899 1900 if (mcmd) 1901 /* abts from remote port */ 1902 entry = &mcmd->orig_iocb.abts; 1903 else 1904 /* abts from this driver. */ 1905 entry = (struct abts_recv_from_24xx *)pkt; 1906 1907 /* 1908 * We've got on entrance firmware's response on by us generated 1909 * ABTS response. So, in it ID fields are reversed. 1910 */ 1911 1912 ctio->entry_type = CTIO_TYPE7; 1913 ctio->entry_count = 1; 1914 ctio->nport_handle = entry->nport_handle; 1915 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1916 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1917 ctio->vp_index = vha->vp_idx; 1918 ctio->exchange_addr = entry->exchange_addr_to_abort; 1919 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1920 1921 if (mcmd) { 1922 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1923 1924 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1925 tmp |= (mcmd->abort_io_attr << 9); 1926 else if (qpair->retry_term_cnt & 1) 1927 tmp |= (0x4 << 9); 1928 } else { 1929 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1930 1931 if (qpair->retry_term_cnt & 1) 1932 tmp |= (0x4 << 9); 1933 } 1934 ctio->u.status1.flags = cpu_to_le16(tmp); 1935 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1936 1937 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1938 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1939 le16_to_cpu(ctio->u.status1.flags), 1940 le16_to_cpu(ctio->u.status1.ox_id), 1941 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1942 1943 /* Memory Barrier */ 1944 wmb(); 1945 if (qpair->reqq_start_iocbs) 1946 qpair->reqq_start_iocbs(qpair); 1947 else 1948 qla2x00_start_iocbs(vha, qpair->req); 1949 1950 if (mcmd) 1951 qlt_build_abts_resp_iocb(mcmd); 1952 else 1953 qlt_24xx_send_abts_resp(qpair, 1954 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1955 1956 } 1957 1958 /* drop cmds for the given lun 1959 * XXX only looks for cmds on the port through which lun reset was recieved 1960 * XXX does not go through the list of other port (which may have cmds 1961 * for the same lun) 1962 */ 1963 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1964 { 1965 struct qla_tgt_sess_op *op; 1966 struct qla_tgt_cmd *cmd; 1967 uint32_t key; 1968 unsigned long flags; 1969 1970 key = sid_to_key(s_id); 1971 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1972 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1973 uint32_t op_key; 1974 u64 op_lun; 1975 1976 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1977 op_lun = scsilun_to_int( 1978 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1979 if (op_key == key && op_lun == lun) 1980 op->aborted = true; 1981 } 1982 1983 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1984 uint32_t cmd_key; 1985 u64 cmd_lun; 1986 1987 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1988 cmd_lun = scsilun_to_int( 1989 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1990 if (cmd_key == key && cmd_lun == lun) 1991 cmd->aborted = 1; 1992 } 1993 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1994 } 1995 1996 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 1997 uint64_t unpacked_lun) 1998 { 1999 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2000 struct qla_qpair_hint *h = NULL; 2001 2002 if (vha->flags.qpairs_available) { 2003 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2004 if (!h) 2005 h = &tgt->qphints[0]; 2006 } else { 2007 h = &tgt->qphints[0]; 2008 } 2009 2010 return h; 2011 } 2012 2013 static void qlt_do_tmr_work(struct work_struct *work) 2014 { 2015 struct qla_tgt_mgmt_cmd *mcmd = 2016 container_of(work, struct qla_tgt_mgmt_cmd, work); 2017 struct qla_hw_data *ha = mcmd->vha->hw; 2018 int rc; 2019 uint32_t tag; 2020 unsigned long flags; 2021 2022 switch (mcmd->tmr_func) { 2023 case QLA_TGT_ABTS: 2024 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2025 break; 2026 default: 2027 tag = 0; 2028 break; 2029 } 2030 2031 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2032 mcmd->tmr_func, tag); 2033 2034 if (rc != 0) { 2035 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2036 switch (mcmd->tmr_func) { 2037 case QLA_TGT_ABTS: 2038 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2039 qlt_build_abts_resp_iocb(mcmd); 2040 break; 2041 case QLA_TGT_LUN_RESET: 2042 case QLA_TGT_CLEAR_TS: 2043 case QLA_TGT_ABORT_TS: 2044 case QLA_TGT_CLEAR_ACA: 2045 case QLA_TGT_TARGET_RESET: 2046 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2047 qla_sam_status); 2048 break; 2049 2050 case QLA_TGT_ABORT_ALL: 2051 case QLA_TGT_NEXUS_LOSS_SESS: 2052 case QLA_TGT_NEXUS_LOSS: 2053 qlt_send_notify_ack(mcmd->qpair, 2054 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2055 break; 2056 } 2057 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2058 2059 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2060 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2061 mcmd->vha->vp_idx, rc); 2062 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2063 } 2064 } 2065 2066 /* ha->hardware_lock supposed to be held on entry */ 2067 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2068 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2069 { 2070 struct qla_hw_data *ha = vha->hw; 2071 struct qla_tgt_mgmt_cmd *mcmd; 2072 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2073 struct qla_tgt_cmd *abort_cmd; 2074 2075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2076 "qla_target(%d): task abort (tag=%d)\n", 2077 vha->vp_idx, abts->exchange_addr_to_abort); 2078 2079 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2080 if (mcmd == NULL) { 2081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2082 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2083 vha->vp_idx, __func__); 2084 return -ENOMEM; 2085 } 2086 memset(mcmd, 0, sizeof(*mcmd)); 2087 mcmd->cmd_type = TYPE_TGT_TMCMD; 2088 mcmd->sess = sess; 2089 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2090 mcmd->reset_count = ha->base_qpair->chip_reset; 2091 mcmd->tmr_func = QLA_TGT_ABTS; 2092 mcmd->qpair = h->qpair; 2093 mcmd->vha = vha; 2094 2095 /* 2096 * LUN is looked up by target-core internally based on the passed 2097 * abts->exchange_addr_to_abort tag. 2098 */ 2099 mcmd->se_cmd.cpuid = h->cpuid; 2100 2101 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2102 le32_to_cpu(abts->exchange_addr_to_abort)); 2103 if (!abort_cmd) { 2104 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2105 return -EIO; 2106 } 2107 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2108 2109 if (abort_cmd->qpair) { 2110 mcmd->qpair = abort_cmd->qpair; 2111 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2112 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2113 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2114 } 2115 2116 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2117 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2118 2119 return 0; 2120 } 2121 2122 /* 2123 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2124 */ 2125 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2126 struct abts_recv_from_24xx *abts) 2127 { 2128 struct qla_hw_data *ha = vha->hw; 2129 struct fc_port *sess; 2130 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2131 be_id_t s_id; 2132 int rc; 2133 unsigned long flags; 2134 2135 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2137 "qla_target(%d): ABTS: Abort Sequence not " 2138 "supported\n", vha->vp_idx); 2139 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2140 false); 2141 return; 2142 } 2143 2144 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2146 "qla_target(%d): ABTS: Unknown Exchange " 2147 "Address received\n", vha->vp_idx); 2148 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2149 false); 2150 return; 2151 } 2152 2153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2154 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2155 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2156 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2157 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2158 2159 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2160 2161 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2162 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2163 if (!sess) { 2164 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2165 "qla_target(%d): task abort for non-existent session\n", 2166 vha->vp_idx); 2167 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2168 2169 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2170 false); 2171 return; 2172 } 2173 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2174 2175 2176 if (sess->deleted) { 2177 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2178 false); 2179 return; 2180 } 2181 2182 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2183 if (rc != 0) { 2184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2185 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2186 vha->vp_idx, rc); 2187 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2188 false); 2189 return; 2190 } 2191 } 2192 2193 /* 2194 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2195 */ 2196 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2197 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2198 { 2199 struct scsi_qla_host *ha = mcmd->vha; 2200 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2201 struct ctio7_to_24xx *ctio; 2202 uint16_t temp; 2203 2204 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2205 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2206 ha, atio, resp_code); 2207 2208 2209 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2210 if (ctio == NULL) { 2211 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2212 "qla_target(%d): %s failed: unable to allocate " 2213 "request packet\n", ha->vp_idx, __func__); 2214 return; 2215 } 2216 2217 ctio->entry_type = CTIO_TYPE7; 2218 ctio->entry_count = 1; 2219 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2220 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2221 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2222 ctio->vp_index = ha->vp_idx; 2223 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2224 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2225 temp = (atio->u.isp24.attr << 9)| 2226 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2227 ctio->u.status1.flags = cpu_to_le16(temp); 2228 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2229 ctio->u.status1.ox_id = cpu_to_le16(temp); 2230 ctio->u.status1.scsi_status = 2231 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2232 ctio->u.status1.response_len = cpu_to_le16(8); 2233 ctio->u.status1.sense_data[0] = resp_code; 2234 2235 /* Memory Barrier */ 2236 wmb(); 2237 if (qpair->reqq_start_iocbs) 2238 qpair->reqq_start_iocbs(qpair); 2239 else 2240 qla2x00_start_iocbs(ha, qpair->req); 2241 } 2242 2243 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2244 { 2245 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2246 } 2247 EXPORT_SYMBOL(qlt_free_mcmd); 2248 2249 /* 2250 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2251 * reacquire 2252 */ 2253 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2254 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2255 { 2256 struct atio_from_isp *atio = &cmd->atio; 2257 struct ctio7_to_24xx *ctio; 2258 uint16_t temp; 2259 struct scsi_qla_host *vha = cmd->vha; 2260 2261 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2262 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2263 "sense_key=%02x, asc=%02x, ascq=%02x", 2264 vha, atio, scsi_status, sense_key, asc, ascq); 2265 2266 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2267 if (!ctio) { 2268 ql_dbg(ql_dbg_async, vha, 0x3067, 2269 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2270 vha->host_no, __func__); 2271 goto out; 2272 } 2273 2274 ctio->entry_type = CTIO_TYPE7; 2275 ctio->entry_count = 1; 2276 ctio->handle = QLA_TGT_SKIP_HANDLE; 2277 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2278 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2279 ctio->vp_index = vha->vp_idx; 2280 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2281 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2282 temp = (atio->u.isp24.attr << 9) | 2283 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2284 ctio->u.status1.flags = cpu_to_le16(temp); 2285 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2286 ctio->u.status1.ox_id = cpu_to_le16(temp); 2287 ctio->u.status1.scsi_status = 2288 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2289 ctio->u.status1.response_len = cpu_to_le16(18); 2290 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2291 2292 if (ctio->u.status1.residual != 0) 2293 ctio->u.status1.scsi_status |= 2294 cpu_to_le16(SS_RESIDUAL_UNDER); 2295 2296 /* Fixed format sense data. */ 2297 ctio->u.status1.sense_data[0] = 0x70; 2298 ctio->u.status1.sense_data[2] = sense_key; 2299 /* Additional sense length */ 2300 ctio->u.status1.sense_data[7] = 0xa; 2301 /* ASC and ASCQ */ 2302 ctio->u.status1.sense_data[12] = asc; 2303 ctio->u.status1.sense_data[13] = ascq; 2304 2305 /* Memory Barrier */ 2306 wmb(); 2307 2308 if (qpair->reqq_start_iocbs) 2309 qpair->reqq_start_iocbs(qpair); 2310 else 2311 qla2x00_start_iocbs(vha, qpair->req); 2312 2313 out: 2314 return; 2315 } 2316 2317 /* callback from target fabric module code */ 2318 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2319 { 2320 struct scsi_qla_host *vha = mcmd->sess->vha; 2321 struct qla_hw_data *ha = vha->hw; 2322 unsigned long flags; 2323 struct qla_qpair *qpair = mcmd->qpair; 2324 bool free_mcmd = true; 2325 2326 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2327 "TM response mcmd (%p) status %#x state %#x", 2328 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2329 2330 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2331 2332 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2333 /* 2334 * Either the port is not online or this request was from 2335 * previous life, just abort the processing. 2336 */ 2337 ql_dbg(ql_dbg_async, vha, 0xe100, 2338 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2339 vha->flags.online, qla2x00_reset_active(vha), 2340 mcmd->reset_count, qpair->chip_reset); 2341 ha->tgt.tgt_ops->free_mcmd(mcmd); 2342 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2343 return; 2344 } 2345 2346 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2347 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2348 case ELS_LOGO: 2349 case ELS_PRLO: 2350 case ELS_TPRLO: 2351 ql_dbg(ql_dbg_disc, vha, 0x2106, 2352 "TM response logo %8phC status %#x state %#x", 2353 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2354 mcmd->flags); 2355 qlt_schedule_sess_for_deletion(mcmd->sess); 2356 break; 2357 default: 2358 qlt_send_notify_ack(vha->hw->base_qpair, 2359 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2360 break; 2361 } 2362 } else { 2363 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2364 qlt_build_abts_resp_iocb(mcmd); 2365 free_mcmd = false; 2366 } else 2367 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2368 mcmd->fc_tm_rsp); 2369 } 2370 /* 2371 * Make the callback for ->free_mcmd() to queue_work() and invoke 2372 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2373 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2374 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2375 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2376 * qlt_xmit_tm_rsp() returns here.. 2377 */ 2378 if (free_mcmd) 2379 ha->tgt.tgt_ops->free_mcmd(mcmd); 2380 2381 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2382 } 2383 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2384 2385 /* No locks */ 2386 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2387 { 2388 struct qla_tgt_cmd *cmd = prm->cmd; 2389 2390 BUG_ON(cmd->sg_cnt == 0); 2391 2392 prm->sg = (struct scatterlist *)cmd->sg; 2393 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2394 cmd->sg_cnt, cmd->dma_data_direction); 2395 if (unlikely(prm->seg_cnt == 0)) 2396 goto out_err; 2397 2398 prm->cmd->sg_mapped = 1; 2399 2400 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2401 /* 2402 * If greater than four sg entries then we need to allocate 2403 * the continuation entries 2404 */ 2405 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2406 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2407 QLA_TGT_DATASEGS_PER_CMD_24XX, 2408 QLA_TGT_DATASEGS_PER_CONT_24XX); 2409 } else { 2410 /* DIF */ 2411 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2412 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2413 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2414 prm->tot_dsds = prm->seg_cnt; 2415 } else 2416 prm->tot_dsds = prm->seg_cnt; 2417 2418 if (cmd->prot_sg_cnt) { 2419 prm->prot_sg = cmd->prot_sg; 2420 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2421 cmd->prot_sg, cmd->prot_sg_cnt, 2422 cmd->dma_data_direction); 2423 if (unlikely(prm->prot_seg_cnt == 0)) 2424 goto out_err; 2425 2426 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2427 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2428 /* Dif Bundling not support here */ 2429 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2430 cmd->blk_sz); 2431 prm->tot_dsds += prm->prot_seg_cnt; 2432 } else 2433 prm->tot_dsds += prm->prot_seg_cnt; 2434 } 2435 } 2436 2437 return 0; 2438 2439 out_err: 2440 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2441 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2442 0, prm->cmd->sg_cnt); 2443 return -1; 2444 } 2445 2446 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2447 { 2448 struct qla_hw_data *ha; 2449 struct qla_qpair *qpair; 2450 2451 if (!cmd->sg_mapped) 2452 return; 2453 2454 qpair = cmd->qpair; 2455 2456 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2457 cmd->dma_data_direction); 2458 cmd->sg_mapped = 0; 2459 2460 if (cmd->prot_sg_cnt) 2461 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2462 cmd->dma_data_direction); 2463 2464 if (!cmd->ctx) 2465 return; 2466 ha = vha->hw; 2467 if (cmd->ctx_dsd_alloced) 2468 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2469 2470 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2471 } 2472 2473 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2474 uint32_t req_cnt) 2475 { 2476 uint32_t cnt; 2477 struct req_que *req = qpair->req; 2478 2479 if (req->cnt < (req_cnt + 2)) { 2480 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2481 rd_reg_dword_relaxed(req->req_q_out)); 2482 2483 if (req->ring_index < cnt) 2484 req->cnt = cnt - req->ring_index; 2485 else 2486 req->cnt = req->length - (req->ring_index - cnt); 2487 2488 if (unlikely(req->cnt < (req_cnt + 2))) 2489 return -EAGAIN; 2490 } 2491 2492 req->cnt -= req_cnt; 2493 2494 return 0; 2495 } 2496 2497 /* 2498 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2499 */ 2500 static inline void *qlt_get_req_pkt(struct req_que *req) 2501 { 2502 /* Adjust ring index. */ 2503 req->ring_index++; 2504 if (req->ring_index == req->length) { 2505 req->ring_index = 0; 2506 req->ring_ptr = req->ring; 2507 } else { 2508 req->ring_ptr++; 2509 } 2510 return (cont_entry_t *)req->ring_ptr; 2511 } 2512 2513 /* ha->hardware_lock supposed to be held on entry */ 2514 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2515 { 2516 uint32_t h; 2517 int index; 2518 uint8_t found = 0; 2519 struct req_que *req = qpair->req; 2520 2521 h = req->current_outstanding_cmd; 2522 2523 for (index = 1; index < req->num_outstanding_cmds; index++) { 2524 h++; 2525 if (h == req->num_outstanding_cmds) 2526 h = 1; 2527 2528 if (h == QLA_TGT_SKIP_HANDLE) 2529 continue; 2530 2531 if (!req->outstanding_cmds[h]) { 2532 found = 1; 2533 break; 2534 } 2535 } 2536 2537 if (found) { 2538 req->current_outstanding_cmd = h; 2539 } else { 2540 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2541 "qla_target(%d): Ran out of empty cmd slots\n", 2542 qpair->vha->vp_idx); 2543 h = QLA_TGT_NULL_HANDLE; 2544 } 2545 2546 return h; 2547 } 2548 2549 /* ha->hardware_lock supposed to be held on entry */ 2550 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2551 struct qla_tgt_prm *prm) 2552 { 2553 uint32_t h; 2554 struct ctio7_to_24xx *pkt; 2555 struct atio_from_isp *atio = &prm->cmd->atio; 2556 uint16_t temp; 2557 struct qla_tgt_cmd *cmd = prm->cmd; 2558 2559 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2560 prm->pkt = pkt; 2561 memset(pkt, 0, sizeof(*pkt)); 2562 2563 pkt->entry_type = CTIO_TYPE7; 2564 pkt->entry_count = (uint8_t)prm->req_cnt; 2565 pkt->vp_index = prm->cmd->vp_idx; 2566 2567 h = qlt_make_handle(qpair); 2568 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2569 /* 2570 * CTIO type 7 from the firmware doesn't provide a way to 2571 * know the initiator's LOOP ID, hence we can't find 2572 * the session and, so, the command. 2573 */ 2574 return -EAGAIN; 2575 } else 2576 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2577 2578 pkt->handle = make_handle(qpair->req->id, h); 2579 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2580 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2581 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2582 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2583 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2584 temp = atio->u.isp24.attr << 9; 2585 pkt->u.status0.flags |= cpu_to_le16(temp); 2586 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2587 pkt->u.status0.ox_id = cpu_to_le16(temp); 2588 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2589 2590 if (cmd->edif) { 2591 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2592 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2593 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2594 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2595 2596 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2597 } 2598 2599 return 0; 2600 } 2601 2602 /* 2603 * ha->hardware_lock supposed to be held on entry. We have already made sure 2604 * that there is sufficient amount of request entries to not drop it. 2605 */ 2606 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2607 { 2608 int cnt; 2609 struct dsd64 *cur_dsd; 2610 2611 /* Build continuation packets */ 2612 while (prm->seg_cnt > 0) { 2613 cont_a64_entry_t *cont_pkt64 = 2614 (cont_a64_entry_t *)qlt_get_req_pkt( 2615 prm->cmd->qpair->req); 2616 2617 /* 2618 * Make sure that from cont_pkt64 none of 2619 * 64-bit specific fields used for 32-bit 2620 * addressing. Cast to (cont_entry_t *) for 2621 * that. 2622 */ 2623 2624 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2625 2626 cont_pkt64->entry_count = 1; 2627 cont_pkt64->sys_define = 0; 2628 2629 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2630 cur_dsd = cont_pkt64->dsd; 2631 2632 /* Load continuation entry data segments */ 2633 for (cnt = 0; 2634 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2635 cnt++, prm->seg_cnt--) { 2636 append_dsd64(&cur_dsd, prm->sg); 2637 prm->sg = sg_next(prm->sg); 2638 } 2639 } 2640 } 2641 2642 /* 2643 * ha->hardware_lock supposed to be held on entry. We have already made sure 2644 * that there is sufficient amount of request entries to not drop it. 2645 */ 2646 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2647 { 2648 int cnt; 2649 struct dsd64 *cur_dsd; 2650 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2651 2652 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2653 2654 /* Setup packet address segment pointer */ 2655 cur_dsd = &pkt24->u.status0.dsd; 2656 2657 /* Set total data segment count */ 2658 if (prm->seg_cnt) 2659 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2660 2661 if (prm->seg_cnt == 0) { 2662 /* No data transfer */ 2663 cur_dsd->address = 0; 2664 cur_dsd->length = 0; 2665 return; 2666 } 2667 2668 /* If scatter gather */ 2669 2670 /* Load command entry data segments */ 2671 for (cnt = 0; 2672 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2673 cnt++, prm->seg_cnt--) { 2674 append_dsd64(&cur_dsd, prm->sg); 2675 prm->sg = sg_next(prm->sg); 2676 } 2677 2678 qlt_load_cont_data_segments(prm); 2679 } 2680 2681 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2682 { 2683 return cmd->bufflen > 0; 2684 } 2685 2686 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2687 { 2688 struct qla_tgt_cmd *cmd; 2689 struct scsi_qla_host *vha; 2690 2691 /* asc 0x10=dif error */ 2692 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2693 cmd = prm->cmd; 2694 vha = cmd->vha; 2695 /* ASCQ */ 2696 switch (prm->sense_buffer[13]) { 2697 case 1: 2698 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2699 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2700 "se_cmd=%p tag[%x]", 2701 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2702 cmd->atio.u.isp24.exchange_addr); 2703 break; 2704 case 2: 2705 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2706 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2707 "se_cmd=%p tag[%x]", 2708 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2709 cmd->atio.u.isp24.exchange_addr); 2710 break; 2711 case 3: 2712 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2713 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2714 "se_cmd=%p tag[%x]", 2715 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2716 cmd->atio.u.isp24.exchange_addr); 2717 break; 2718 default: 2719 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2720 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2721 "se_cmd=%p tag[%x]", 2722 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2723 cmd->atio.u.isp24.exchange_addr); 2724 break; 2725 } 2726 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2727 } 2728 } 2729 2730 /* 2731 * Called without ha->hardware_lock held 2732 */ 2733 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2734 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2735 uint32_t *full_req_cnt) 2736 { 2737 struct se_cmd *se_cmd = &cmd->se_cmd; 2738 struct qla_qpair *qpair = cmd->qpair; 2739 2740 prm->cmd = cmd; 2741 prm->tgt = cmd->tgt; 2742 prm->pkt = NULL; 2743 prm->rq_result = scsi_status; 2744 prm->sense_buffer = &cmd->sense_buffer[0]; 2745 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2746 prm->sg = NULL; 2747 prm->seg_cnt = -1; 2748 prm->req_cnt = 1; 2749 prm->residual = 0; 2750 prm->add_status_pkt = 0; 2751 prm->prot_sg = NULL; 2752 prm->prot_seg_cnt = 0; 2753 prm->tot_dsds = 0; 2754 2755 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2756 if (qlt_pci_map_calc_cnt(prm) != 0) 2757 return -EAGAIN; 2758 } 2759 2760 *full_req_cnt = prm->req_cnt; 2761 2762 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2763 prm->residual = se_cmd->residual_count; 2764 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2765 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2766 prm->residual, se_cmd->tag, 2767 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2768 cmd->bufflen, prm->rq_result); 2769 prm->rq_result |= SS_RESIDUAL_UNDER; 2770 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2771 prm->residual = se_cmd->residual_count; 2772 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2773 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2774 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2775 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2776 prm->rq_result |= SS_RESIDUAL_OVER; 2777 } 2778 2779 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2780 /* 2781 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2782 * ignored in *xmit_response() below 2783 */ 2784 if (qlt_has_data(cmd)) { 2785 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2786 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2787 (prm->rq_result != 0))) { 2788 prm->add_status_pkt = 1; 2789 (*full_req_cnt)++; 2790 } 2791 } 2792 } 2793 2794 return 0; 2795 } 2796 2797 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2798 int sending_sense) 2799 { 2800 if (cmd->qpair->enable_class_2) 2801 return 0; 2802 2803 if (sending_sense) 2804 return cmd->conf_compl_supported; 2805 else 2806 return cmd->qpair->enable_explicit_conf && 2807 cmd->conf_compl_supported; 2808 } 2809 2810 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2811 struct qla_tgt_prm *prm) 2812 { 2813 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2814 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2815 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2816 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2817 ctio->u.status0.flags |= cpu_to_le16( 2818 CTIO7_FLAGS_EXPLICIT_CONFORM | 2819 CTIO7_FLAGS_CONFORM_REQ); 2820 } 2821 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2822 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2823 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2824 int i; 2825 2826 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2827 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2828 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2829 "Skipping EXPLICIT_CONFORM and " 2830 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2831 "non GOOD status\n"); 2832 goto skip_explict_conf; 2833 } 2834 ctio->u.status1.flags |= cpu_to_le16( 2835 CTIO7_FLAGS_EXPLICIT_CONFORM | 2836 CTIO7_FLAGS_CONFORM_REQ); 2837 } 2838 skip_explict_conf: 2839 ctio->u.status1.flags &= 2840 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2841 ctio->u.status1.flags |= 2842 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2843 ctio->u.status1.scsi_status |= 2844 cpu_to_le16(SS_SENSE_LEN_VALID); 2845 ctio->u.status1.sense_length = 2846 cpu_to_le16(prm->sense_buffer_len); 2847 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2848 uint32_t v; 2849 2850 v = get_unaligned_be32( 2851 &((uint32_t *)prm->sense_buffer)[i]); 2852 put_unaligned_le32(v, 2853 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2854 } 2855 qlt_print_dif_err(prm); 2856 2857 } else { 2858 ctio->u.status1.flags &= 2859 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2860 ctio->u.status1.flags |= 2861 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2862 ctio->u.status1.sense_length = 0; 2863 memset(ctio->u.status1.sense_data, 0, 2864 sizeof(ctio->u.status1.sense_data)); 2865 } 2866 2867 /* Sense with len > 24, is it possible ??? */ 2868 } 2869 2870 static inline int 2871 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2872 { 2873 switch (se_cmd->prot_op) { 2874 case TARGET_PROT_DOUT_INSERT: 2875 case TARGET_PROT_DIN_STRIP: 2876 if (ql2xenablehba_err_chk >= 1) 2877 return 1; 2878 break; 2879 case TARGET_PROT_DOUT_PASS: 2880 case TARGET_PROT_DIN_PASS: 2881 if (ql2xenablehba_err_chk >= 2) 2882 return 1; 2883 break; 2884 case TARGET_PROT_DIN_INSERT: 2885 case TARGET_PROT_DOUT_STRIP: 2886 return 1; 2887 default: 2888 break; 2889 } 2890 return 0; 2891 } 2892 2893 static inline int 2894 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2895 { 2896 switch (se_cmd->prot_op) { 2897 case TARGET_PROT_DIN_INSERT: 2898 case TARGET_PROT_DOUT_INSERT: 2899 case TARGET_PROT_DIN_STRIP: 2900 case TARGET_PROT_DOUT_STRIP: 2901 case TARGET_PROT_DIN_PASS: 2902 case TARGET_PROT_DOUT_PASS: 2903 return 1; 2904 default: 2905 return 0; 2906 } 2907 return 0; 2908 } 2909 2910 /* 2911 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2912 */ 2913 static void 2914 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2915 uint16_t *pfw_prot_opts) 2916 { 2917 struct se_cmd *se_cmd = &cmd->se_cmd; 2918 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2919 scsi_qla_host_t *vha = cmd->tgt->vha; 2920 struct qla_hw_data *ha = vha->hw; 2921 uint32_t t32 = 0; 2922 2923 /* 2924 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2925 * have been immplemented by TCM, before AppTag is avail. 2926 * Look for modesense_handlers[] 2927 */ 2928 ctx->app_tag = 0; 2929 ctx->app_tag_mask[0] = 0x0; 2930 ctx->app_tag_mask[1] = 0x0; 2931 2932 if (IS_PI_UNINIT_CAPABLE(ha)) { 2933 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2934 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2935 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2936 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2937 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2938 } 2939 2940 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2941 2942 switch (se_cmd->prot_type) { 2943 case TARGET_DIF_TYPE0_PROT: 2944 /* 2945 * No check for ql2xenablehba_err_chk, as it 2946 * would be an I/O error if hba tag generation 2947 * is not done. 2948 */ 2949 ctx->ref_tag = cpu_to_le32(lba); 2950 /* enable ALL bytes of the ref tag */ 2951 ctx->ref_tag_mask[0] = 0xff; 2952 ctx->ref_tag_mask[1] = 0xff; 2953 ctx->ref_tag_mask[2] = 0xff; 2954 ctx->ref_tag_mask[3] = 0xff; 2955 break; 2956 case TARGET_DIF_TYPE1_PROT: 2957 /* 2958 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2959 * REF tag, and 16 bit app tag. 2960 */ 2961 ctx->ref_tag = cpu_to_le32(lba); 2962 if (!qla_tgt_ref_mask_check(se_cmd) || 2963 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2964 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2965 break; 2966 } 2967 /* enable ALL bytes of the ref tag */ 2968 ctx->ref_tag_mask[0] = 0xff; 2969 ctx->ref_tag_mask[1] = 0xff; 2970 ctx->ref_tag_mask[2] = 0xff; 2971 ctx->ref_tag_mask[3] = 0xff; 2972 break; 2973 case TARGET_DIF_TYPE2_PROT: 2974 /* 2975 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2976 * tag has to match LBA in CDB + N 2977 */ 2978 ctx->ref_tag = cpu_to_le32(lba); 2979 if (!qla_tgt_ref_mask_check(se_cmd) || 2980 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2981 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2982 break; 2983 } 2984 /* enable ALL bytes of the ref tag */ 2985 ctx->ref_tag_mask[0] = 0xff; 2986 ctx->ref_tag_mask[1] = 0xff; 2987 ctx->ref_tag_mask[2] = 0xff; 2988 ctx->ref_tag_mask[3] = 0xff; 2989 break; 2990 case TARGET_DIF_TYPE3_PROT: 2991 /* For TYPE 3 protection: 16 bit GUARD only */ 2992 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2993 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2994 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2995 break; 2996 } 2997 } 2998 2999 static inline int 3000 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3001 { 3002 struct dsd64 *cur_dsd; 3003 uint32_t transfer_length = 0; 3004 uint32_t data_bytes; 3005 uint32_t dif_bytes; 3006 uint8_t bundling = 1; 3007 struct crc_context *crc_ctx_pkt = NULL; 3008 struct qla_hw_data *ha; 3009 struct ctio_crc2_to_fw *pkt; 3010 dma_addr_t crc_ctx_dma; 3011 uint16_t fw_prot_opts = 0; 3012 struct qla_tgt_cmd *cmd = prm->cmd; 3013 struct se_cmd *se_cmd = &cmd->se_cmd; 3014 uint32_t h; 3015 struct atio_from_isp *atio = &prm->cmd->atio; 3016 struct qla_tc_param tc; 3017 uint16_t t16; 3018 scsi_qla_host_t *vha = cmd->vha; 3019 3020 ha = vha->hw; 3021 3022 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3023 prm->pkt = pkt; 3024 memset(pkt, 0, sizeof(*pkt)); 3025 3026 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3027 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3028 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3029 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3030 3031 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3032 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3033 bundling = 0; 3034 3035 /* Compute dif len and adjust data len to incude protection */ 3036 data_bytes = cmd->bufflen; 3037 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3038 3039 switch (se_cmd->prot_op) { 3040 case TARGET_PROT_DIN_INSERT: 3041 case TARGET_PROT_DOUT_STRIP: 3042 transfer_length = data_bytes; 3043 if (cmd->prot_sg_cnt) 3044 data_bytes += dif_bytes; 3045 break; 3046 case TARGET_PROT_DIN_STRIP: 3047 case TARGET_PROT_DOUT_INSERT: 3048 case TARGET_PROT_DIN_PASS: 3049 case TARGET_PROT_DOUT_PASS: 3050 transfer_length = data_bytes + dif_bytes; 3051 break; 3052 default: 3053 BUG(); 3054 break; 3055 } 3056 3057 if (!qlt_hba_err_chk_enabled(se_cmd)) 3058 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3059 /* HBA error checking enabled */ 3060 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3061 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3062 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3063 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3064 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3065 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3066 } 3067 3068 switch (se_cmd->prot_op) { 3069 case TARGET_PROT_DIN_INSERT: 3070 case TARGET_PROT_DOUT_INSERT: 3071 fw_prot_opts |= PO_MODE_DIF_INSERT; 3072 break; 3073 case TARGET_PROT_DIN_STRIP: 3074 case TARGET_PROT_DOUT_STRIP: 3075 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3076 break; 3077 case TARGET_PROT_DIN_PASS: 3078 case TARGET_PROT_DOUT_PASS: 3079 fw_prot_opts |= PO_MODE_DIF_PASS; 3080 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3081 break; 3082 default:/* Normal Request */ 3083 fw_prot_opts |= PO_MODE_DIF_PASS; 3084 break; 3085 } 3086 3087 /* ---- PKT ---- */ 3088 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3089 pkt->entry_type = CTIO_CRC2; 3090 pkt->entry_count = 1; 3091 pkt->vp_index = cmd->vp_idx; 3092 3093 h = qlt_make_handle(qpair); 3094 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3095 /* 3096 * CTIO type 7 from the firmware doesn't provide a way to 3097 * know the initiator's LOOP ID, hence we can't find 3098 * the session and, so, the command. 3099 */ 3100 return -EAGAIN; 3101 } else 3102 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3103 3104 pkt->handle = make_handle(qpair->req->id, h); 3105 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3106 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3107 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3108 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3109 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3110 3111 /* silence compile warning */ 3112 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3113 pkt->ox_id = cpu_to_le16(t16); 3114 3115 t16 = (atio->u.isp24.attr << 9); 3116 pkt->flags |= cpu_to_le16(t16); 3117 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3118 3119 /* Set transfer direction */ 3120 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3121 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3122 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3123 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3124 3125 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3126 /* Fibre channel byte count */ 3127 pkt->transfer_length = cpu_to_le32(transfer_length); 3128 3129 /* ----- CRC context -------- */ 3130 3131 /* Allocate CRC context from global pool */ 3132 crc_ctx_pkt = cmd->ctx = 3133 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3134 3135 if (!crc_ctx_pkt) 3136 goto crc_queuing_error; 3137 3138 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3139 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3140 3141 /* Set handle */ 3142 crc_ctx_pkt->handle = pkt->handle; 3143 3144 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3145 3146 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3147 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3148 3149 if (!bundling) { 3150 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3151 } else { 3152 /* 3153 * Configure Bundling if we need to fetch interlaving 3154 * protection PCI accesses 3155 */ 3156 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3157 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3158 crc_ctx_pkt->u.bundling.dseg_count = 3159 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3160 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3161 } 3162 3163 /* Finish the common fields of CRC pkt */ 3164 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3165 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3166 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3167 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3168 3169 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3170 tc.vha = vha; 3171 tc.blk_sz = cmd->blk_sz; 3172 tc.bufflen = cmd->bufflen; 3173 tc.sg = cmd->sg; 3174 tc.prot_sg = cmd->prot_sg; 3175 tc.ctx = crc_ctx_pkt; 3176 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3177 3178 /* Walks data segments */ 3179 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3180 3181 if (!bundling && prm->prot_seg_cnt) { 3182 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3183 prm->tot_dsds, &tc)) 3184 goto crc_queuing_error; 3185 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3186 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3187 goto crc_queuing_error; 3188 3189 if (bundling && prm->prot_seg_cnt) { 3190 /* Walks dif segments */ 3191 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3192 3193 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3194 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3195 prm->prot_seg_cnt, cmd)) 3196 goto crc_queuing_error; 3197 } 3198 return QLA_SUCCESS; 3199 3200 crc_queuing_error: 3201 /* Cleanup will be performed by the caller */ 3202 qpair->req->outstanding_cmds[h] = NULL; 3203 3204 return QLA_FUNCTION_FAILED; 3205 } 3206 3207 /* 3208 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3209 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3210 */ 3211 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3212 uint8_t scsi_status) 3213 { 3214 struct scsi_qla_host *vha = cmd->vha; 3215 struct qla_qpair *qpair = cmd->qpair; 3216 struct ctio7_to_24xx *pkt; 3217 struct qla_tgt_prm prm; 3218 uint32_t full_req_cnt = 0; 3219 unsigned long flags = 0; 3220 int res; 3221 3222 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3223 (cmd->sess && cmd->sess->deleted)) { 3224 cmd->state = QLA_TGT_STATE_PROCESSED; 3225 return 0; 3226 } 3227 3228 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3229 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3230 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3231 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3232 &cmd->se_cmd, qpair->id); 3233 3234 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3235 &full_req_cnt); 3236 if (unlikely(res != 0)) { 3237 return res; 3238 } 3239 3240 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3241 3242 if (xmit_type == QLA_TGT_XMIT_STATUS) 3243 qpair->tgt_counters.core_qla_snd_status++; 3244 else 3245 qpair->tgt_counters.core_qla_que_buf++; 3246 3247 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3248 /* 3249 * Either the port is not online or this request was from 3250 * previous life, just abort the processing. 3251 */ 3252 cmd->state = QLA_TGT_STATE_PROCESSED; 3253 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3254 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3255 vha->flags.online, qla2x00_reset_active(vha), 3256 cmd->reset_count, qpair->chip_reset); 3257 res = 0; 3258 goto out_unmap_unlock; 3259 } 3260 3261 /* Does F/W have an IOCBs for this request */ 3262 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3263 if (unlikely(res)) 3264 goto out_unmap_unlock; 3265 3266 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3267 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3268 else 3269 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3270 if (unlikely(res != 0)) { 3271 qpair->req->cnt += full_req_cnt; 3272 goto out_unmap_unlock; 3273 } 3274 3275 pkt = (struct ctio7_to_24xx *)prm.pkt; 3276 3277 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3278 pkt->u.status0.flags |= 3279 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3280 CTIO7_FLAGS_STATUS_MODE_0); 3281 3282 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3283 qlt_load_data_segments(&prm); 3284 3285 if (prm.add_status_pkt == 0) { 3286 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3287 pkt->u.status0.scsi_status = 3288 cpu_to_le16(prm.rq_result); 3289 if (!cmd->edif) 3290 pkt->u.status0.residual = 3291 cpu_to_le32(prm.residual); 3292 3293 pkt->u.status0.flags |= cpu_to_le16( 3294 CTIO7_FLAGS_SEND_STATUS); 3295 if (qlt_need_explicit_conf(cmd, 0)) { 3296 pkt->u.status0.flags |= 3297 cpu_to_le16( 3298 CTIO7_FLAGS_EXPLICIT_CONFORM | 3299 CTIO7_FLAGS_CONFORM_REQ); 3300 } 3301 } 3302 3303 } else { 3304 /* 3305 * We have already made sure that there is sufficient 3306 * amount of request entries to not drop HW lock in 3307 * req_pkt(). 3308 */ 3309 struct ctio7_to_24xx *ctio = 3310 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3311 qpair->req); 3312 3313 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3314 "Building additional status packet 0x%p.\n", 3315 ctio); 3316 3317 /* 3318 * T10Dif: ctio_crc2_to_fw overlay ontop of 3319 * ctio7_to_24xx 3320 */ 3321 memcpy(ctio, pkt, sizeof(*ctio)); 3322 /* reset back to CTIO7 */ 3323 ctio->entry_count = 1; 3324 ctio->entry_type = CTIO_TYPE7; 3325 ctio->dseg_count = 0; 3326 ctio->u.status1.flags &= ~cpu_to_le16( 3327 CTIO7_FLAGS_DATA_IN); 3328 3329 /* Real finish is ctio_m1's finish */ 3330 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3331 pkt->u.status0.flags |= cpu_to_le16( 3332 CTIO7_FLAGS_DONT_RET_CTIO); 3333 3334 /* qlt_24xx_init_ctio_to_isp will correct 3335 * all neccessary fields that's part of CTIO7. 3336 * There should be no residual of CTIO-CRC2 data. 3337 */ 3338 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3339 &prm); 3340 } 3341 } else 3342 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3343 3344 3345 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3346 cmd->cmd_sent_to_fw = 1; 3347 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3348 3349 /* Memory Barrier */ 3350 wmb(); 3351 if (qpair->reqq_start_iocbs) 3352 qpair->reqq_start_iocbs(qpair); 3353 else 3354 qla2x00_start_iocbs(vha, qpair->req); 3355 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3356 3357 return 0; 3358 3359 out_unmap_unlock: 3360 qlt_unmap_sg(vha, cmd); 3361 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3362 3363 return res; 3364 } 3365 EXPORT_SYMBOL(qlt_xmit_response); 3366 3367 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3368 { 3369 struct ctio7_to_24xx *pkt; 3370 struct scsi_qla_host *vha = cmd->vha; 3371 struct qla_tgt *tgt = cmd->tgt; 3372 struct qla_tgt_prm prm; 3373 unsigned long flags = 0; 3374 int res = 0; 3375 struct qla_qpair *qpair = cmd->qpair; 3376 3377 memset(&prm, 0, sizeof(prm)); 3378 prm.cmd = cmd; 3379 prm.tgt = tgt; 3380 prm.sg = NULL; 3381 prm.req_cnt = 1; 3382 3383 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3384 (cmd->sess && cmd->sess->deleted)) { 3385 /* 3386 * Either the port is not online or this request was from 3387 * previous life, just abort the processing. 3388 */ 3389 cmd->aborted = 1; 3390 cmd->write_data_transferred = 0; 3391 cmd->state = QLA_TGT_STATE_DATA_IN; 3392 vha->hw->tgt.tgt_ops->handle_data(cmd); 3393 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3394 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3395 vha->flags.online, qla2x00_reset_active(vha), 3396 cmd->reset_count, qpair->chip_reset); 3397 return 0; 3398 } 3399 3400 /* Calculate number of entries and segments required */ 3401 if (qlt_pci_map_calc_cnt(&prm) != 0) 3402 return -EAGAIN; 3403 3404 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3405 /* Does F/W have an IOCBs for this request */ 3406 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3407 if (res != 0) 3408 goto out_unlock_free_unmap; 3409 if (cmd->se_cmd.prot_op) 3410 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3411 else 3412 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3413 3414 if (unlikely(res != 0)) { 3415 qpair->req->cnt += prm.req_cnt; 3416 goto out_unlock_free_unmap; 3417 } 3418 3419 pkt = (struct ctio7_to_24xx *)prm.pkt; 3420 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3421 CTIO7_FLAGS_STATUS_MODE_0); 3422 3423 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3424 qlt_load_data_segments(&prm); 3425 3426 cmd->state = QLA_TGT_STATE_NEED_DATA; 3427 cmd->cmd_sent_to_fw = 1; 3428 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3429 3430 /* Memory Barrier */ 3431 wmb(); 3432 if (qpair->reqq_start_iocbs) 3433 qpair->reqq_start_iocbs(qpair); 3434 else 3435 qla2x00_start_iocbs(vha, qpair->req); 3436 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3437 3438 return res; 3439 3440 out_unlock_free_unmap: 3441 qlt_unmap_sg(vha, cmd); 3442 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3443 3444 return res; 3445 } 3446 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3447 3448 3449 /* 3450 * it is assumed either hardware_lock or qpair lock is held. 3451 */ 3452 static void 3453 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3454 struct ctio_crc_from_fw *sts) 3455 { 3456 uint8_t *ap = &sts->actual_dif[0]; 3457 uint8_t *ep = &sts->expected_dif[0]; 3458 uint64_t lba = cmd->se_cmd.t_task_lba; 3459 uint8_t scsi_status, sense_key, asc, ascq; 3460 unsigned long flags; 3461 struct scsi_qla_host *vha = cmd->vha; 3462 3463 cmd->trc_flags |= TRC_DIF_ERR; 3464 3465 cmd->a_guard = get_unaligned_be16(ap + 0); 3466 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3467 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3468 3469 cmd->e_guard = get_unaligned_be16(ep + 0); 3470 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3471 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3472 3473 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3474 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3475 3476 scsi_status = sense_key = asc = ascq = 0; 3477 3478 /* check appl tag */ 3479 if (cmd->e_app_tag != cmd->a_app_tag) { 3480 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3481 "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]", 3482 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3483 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3484 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3485 cmd->atio.u.isp24.fcp_hdr.ox_id); 3486 3487 cmd->dif_err_code = DIF_ERR_APP; 3488 scsi_status = SAM_STAT_CHECK_CONDITION; 3489 sense_key = ABORTED_COMMAND; 3490 asc = 0x10; 3491 ascq = 0x2; 3492 } 3493 3494 /* check ref tag */ 3495 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3496 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3497 "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] ", 3498 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3499 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3500 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3501 cmd->atio.u.isp24.fcp_hdr.ox_id); 3502 3503 cmd->dif_err_code = DIF_ERR_REF; 3504 scsi_status = SAM_STAT_CHECK_CONDITION; 3505 sense_key = ABORTED_COMMAND; 3506 asc = 0x10; 3507 ascq = 0x3; 3508 goto out; 3509 } 3510 3511 /* check guard */ 3512 if (cmd->e_guard != cmd->a_guard) { 3513 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3514 "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]", 3515 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3516 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3517 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3518 cmd->atio.u.isp24.fcp_hdr.ox_id); 3519 3520 cmd->dif_err_code = DIF_ERR_GRD; 3521 scsi_status = SAM_STAT_CHECK_CONDITION; 3522 sense_key = ABORTED_COMMAND; 3523 asc = 0x10; 3524 ascq = 0x1; 3525 } 3526 out: 3527 switch (cmd->state) { 3528 case QLA_TGT_STATE_NEED_DATA: 3529 /* handle_data will load DIF error code */ 3530 cmd->state = QLA_TGT_STATE_DATA_IN; 3531 vha->hw->tgt.tgt_ops->handle_data(cmd); 3532 break; 3533 default: 3534 spin_lock_irqsave(&cmd->cmd_lock, flags); 3535 if (cmd->aborted) { 3536 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3537 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3538 break; 3539 } 3540 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3541 3542 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3543 ascq); 3544 /* assume scsi status gets out on the wire. 3545 * Will not wait for completion. 3546 */ 3547 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3548 break; 3549 } 3550 } 3551 3552 /* If hardware_lock held on entry, might drop it, then reaquire */ 3553 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3554 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3555 struct imm_ntfy_from_isp *ntfy) 3556 { 3557 struct nack_to_isp *nack; 3558 struct qla_hw_data *ha = vha->hw; 3559 request_t *pkt; 3560 int ret = 0; 3561 3562 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3563 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3564 3565 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3566 if (pkt == NULL) { 3567 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3568 "qla_target(%d): %s failed: unable to allocate " 3569 "request packet\n", vha->vp_idx, __func__); 3570 return -ENOMEM; 3571 } 3572 3573 pkt->entry_type = NOTIFY_ACK_TYPE; 3574 pkt->entry_count = 1; 3575 pkt->handle = QLA_TGT_SKIP_HANDLE; 3576 3577 nack = (struct nack_to_isp *)pkt; 3578 nack->ox_id = ntfy->ox_id; 3579 3580 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3581 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3582 nack->u.isp24.flags = ntfy->u.isp24.flags & 3583 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3584 } 3585 3586 /* terminate */ 3587 nack->u.isp24.flags |= 3588 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3589 3590 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3591 nack->u.isp24.status = ntfy->u.isp24.status; 3592 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3593 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3594 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3595 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3596 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3597 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3598 3599 qla2x00_start_iocbs(vha, vha->req); 3600 return ret; 3601 } 3602 3603 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3604 struct imm_ntfy_from_isp *imm, int ha_locked) 3605 { 3606 int rc; 3607 3608 WARN_ON_ONCE(!ha_locked); 3609 rc = __qlt_send_term_imm_notif(vha, imm); 3610 pr_debug("rc = %d\n", rc); 3611 } 3612 3613 /* 3614 * If hardware_lock held on entry, might drop it, then reaquire 3615 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3616 */ 3617 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3618 struct qla_tgt_cmd *cmd, 3619 struct atio_from_isp *atio) 3620 { 3621 struct scsi_qla_host *vha = qpair->vha; 3622 struct ctio7_to_24xx *ctio24; 3623 struct qla_hw_data *ha = vha->hw; 3624 request_t *pkt; 3625 int ret = 0; 3626 uint16_t temp; 3627 3628 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3629 3630 if (cmd) 3631 vha = cmd->vha; 3632 3633 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3634 if (pkt == NULL) { 3635 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3636 "qla_target(%d): %s failed: unable to allocate " 3637 "request packet\n", vha->vp_idx, __func__); 3638 return -ENOMEM; 3639 } 3640 3641 if (cmd != NULL) { 3642 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3643 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3644 "qla_target(%d): Terminating cmd %p with " 3645 "incorrect state %d\n", vha->vp_idx, cmd, 3646 cmd->state); 3647 } else 3648 ret = 1; 3649 } 3650 3651 qpair->tgt_counters.num_term_xchg_sent++; 3652 pkt->entry_count = 1; 3653 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3654 3655 ctio24 = (struct ctio7_to_24xx *)pkt; 3656 ctio24->entry_type = CTIO_TYPE7; 3657 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3658 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3659 ctio24->vp_index = vha->vp_idx; 3660 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3661 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3662 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3663 CTIO7_FLAGS_TERMINATE; 3664 ctio24->u.status1.flags = cpu_to_le16(temp); 3665 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3666 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3667 3668 /* Memory Barrier */ 3669 wmb(); 3670 if (qpair->reqq_start_iocbs) 3671 qpair->reqq_start_iocbs(qpair); 3672 else 3673 qla2x00_start_iocbs(vha, qpair->req); 3674 return ret; 3675 } 3676 3677 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3678 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3679 int ul_abort) 3680 { 3681 struct scsi_qla_host *vha; 3682 unsigned long flags = 0; 3683 int rc; 3684 3685 /* why use different vha? NPIV */ 3686 if (cmd) 3687 vha = cmd->vha; 3688 else 3689 vha = qpair->vha; 3690 3691 if (ha_locked) { 3692 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3693 if (rc == -ENOMEM) 3694 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3695 goto done; 3696 } 3697 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3698 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3699 if (rc == -ENOMEM) 3700 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3701 3702 done: 3703 if (cmd && !ul_abort && !cmd->aborted) { 3704 if (cmd->sg_mapped) 3705 qlt_unmap_sg(vha, cmd); 3706 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3707 } 3708 3709 if (!ha_locked) 3710 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3711 3712 return; 3713 } 3714 3715 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3716 { 3717 struct list_head free_list; 3718 struct qla_tgt_cmd *cmd, *tcmd; 3719 3720 vha->hw->tgt.leak_exchg_thresh_hold = 3721 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3722 3723 cmd = tcmd = NULL; 3724 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3725 INIT_LIST_HEAD(&free_list); 3726 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3727 3728 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3729 list_del(&cmd->cmd_list); 3730 /* This cmd was never sent to TCM. There is no need 3731 * to schedule free or call free_cmd 3732 */ 3733 qlt_free_cmd(cmd); 3734 vha->hw->tgt.num_qfull_cmds_alloc--; 3735 } 3736 } 3737 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3738 } 3739 3740 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3741 { 3742 uint32_t total_leaked; 3743 3744 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3745 3746 if (vha->hw->tgt.leak_exchg_thresh_hold && 3747 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3748 3749 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3750 "Chip reset due to exchange starvation: %d/%d.\n", 3751 total_leaked, vha->hw->cur_fw_xcb_count); 3752 3753 if (IS_P3P_TYPE(vha->hw)) 3754 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3755 else 3756 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3757 qla2xxx_wake_dpc(vha); 3758 } 3759 3760 } 3761 3762 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3763 { 3764 struct qla_tgt *tgt = cmd->tgt; 3765 struct scsi_qla_host *vha = tgt->vha; 3766 struct se_cmd *se_cmd = &cmd->se_cmd; 3767 unsigned long flags; 3768 3769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3770 "qla_target(%d): terminating exchange for aborted cmd=%p " 3771 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3772 se_cmd->tag); 3773 3774 spin_lock_irqsave(&cmd->cmd_lock, flags); 3775 if (cmd->aborted) { 3776 if (cmd->sg_mapped) 3777 qlt_unmap_sg(vha, cmd); 3778 3779 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3780 /* 3781 * It's normal to see 2 calls in this path: 3782 * 1) XFER Rdy completion + CMD_T_ABORT 3783 * 2) TCM TMR - drain_state_list 3784 */ 3785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3786 "multiple abort. %p transport_state %x, t_state %x, " 3787 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3788 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3789 return -EIO; 3790 } 3791 cmd->aborted = 1; 3792 cmd->trc_flags |= TRC_ABORT; 3793 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3794 3795 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3796 return 0; 3797 } 3798 EXPORT_SYMBOL(qlt_abort_cmd); 3799 3800 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3801 { 3802 struct fc_port *sess = cmd->sess; 3803 3804 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3805 "%s: se_cmd[%p] ox_id %04x\n", 3806 __func__, &cmd->se_cmd, 3807 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3808 3809 BUG_ON(cmd->cmd_in_wq); 3810 3811 if (!cmd->q_full) 3812 qlt_decr_num_pend_cmds(cmd->vha); 3813 3814 BUG_ON(cmd->sg_mapped); 3815 cmd->jiffies_at_free = get_jiffies_64(); 3816 3817 if (!sess || !sess->se_sess) { 3818 WARN_ON(1); 3819 return; 3820 } 3821 cmd->jiffies_at_free = get_jiffies_64(); 3822 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3823 } 3824 EXPORT_SYMBOL(qlt_free_cmd); 3825 3826 /* 3827 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3828 */ 3829 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3830 struct qla_tgt_cmd *cmd, uint32_t status) 3831 { 3832 int term = 0; 3833 struct scsi_qla_host *vha = qpair->vha; 3834 3835 if (cmd->se_cmd.prot_op) 3836 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3837 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3838 "se_cmd=%p tag[%x] op %#x/%s", 3839 cmd->lba, cmd->lba, 3840 cmd->num_blks, &cmd->se_cmd, 3841 cmd->atio.u.isp24.exchange_addr, 3842 cmd->se_cmd.prot_op, 3843 prot_op_str(cmd->se_cmd.prot_op)); 3844 3845 if (ctio != NULL) { 3846 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3847 3848 term = !(c->flags & 3849 cpu_to_le16(OF_TERM_EXCH)); 3850 } else 3851 term = 1; 3852 3853 if (term) 3854 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3855 3856 return term; 3857 } 3858 3859 3860 /* ha->hardware_lock supposed to be held on entry */ 3861 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3862 struct rsp_que *rsp, uint32_t handle, void *ctio) 3863 { 3864 void *cmd = NULL; 3865 struct req_que *req; 3866 int qid = GET_QID(handle); 3867 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3868 3869 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3870 return NULL; 3871 3872 if (qid == rsp->req->id) { 3873 req = rsp->req; 3874 } else if (vha->hw->req_q_map[qid]) { 3875 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3876 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3877 vha->vp_idx, rsp->id, handle); 3878 req = vha->hw->req_q_map[qid]; 3879 } else { 3880 return NULL; 3881 } 3882 3883 h &= QLA_CMD_HANDLE_MASK; 3884 3885 if (h != QLA_TGT_NULL_HANDLE) { 3886 if (unlikely(h >= req->num_outstanding_cmds)) { 3887 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3888 "qla_target(%d): Wrong handle %x received\n", 3889 vha->vp_idx, handle); 3890 return NULL; 3891 } 3892 3893 cmd = req->outstanding_cmds[h]; 3894 if (unlikely(cmd == NULL)) { 3895 ql_dbg(ql_dbg_async, vha, 0xe053, 3896 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3897 vha->vp_idx, handle, req->id, rsp->id); 3898 return NULL; 3899 } 3900 req->outstanding_cmds[h] = NULL; 3901 } else if (ctio != NULL) { 3902 /* We can't get loop ID from CTIO7 */ 3903 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3904 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3905 "support NULL handles\n", vha->vp_idx); 3906 return NULL; 3907 } 3908 3909 return cmd; 3910 } 3911 3912 /* 3913 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3914 */ 3915 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3916 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3917 { 3918 struct qla_hw_data *ha = vha->hw; 3919 struct se_cmd *se_cmd; 3920 struct qla_tgt_cmd *cmd; 3921 struct qla_qpair *qpair = rsp->qpair; 3922 3923 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3924 /* That could happen only in case of an error/reset/abort */ 3925 if (status != CTIO_SUCCESS) { 3926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3927 "Intermediate CTIO received" 3928 " (status %x)\n", status); 3929 } 3930 return; 3931 } 3932 3933 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3934 if (cmd == NULL) 3935 return; 3936 3937 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3938 cmd->sess) { 3939 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 3940 (struct ctio7_from_24xx *)ctio); 3941 } 3942 3943 se_cmd = &cmd->se_cmd; 3944 cmd->cmd_sent_to_fw = 0; 3945 3946 qlt_unmap_sg(vha, cmd); 3947 3948 if (unlikely(status != CTIO_SUCCESS)) { 3949 switch (status & 0xFFFF) { 3950 case CTIO_INVALID_RX_ID: 3951 if (printk_ratelimit()) 3952 dev_info(&vha->hw->pdev->dev, 3953 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3954 vha->vp_idx, cmd->atio.u.isp24.attr, 3955 ((cmd->ctio_flags >> 9) & 0xf), 3956 cmd->ctio_flags); 3957 3958 break; 3959 case CTIO_LIP_RESET: 3960 case CTIO_TARGET_RESET: 3961 case CTIO_ABORTED: 3962 /* driver request abort via Terminate exchange */ 3963 case CTIO_TIMEOUT: 3964 /* They are OK */ 3965 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3966 "qla_target(%d): CTIO with " 3967 "status %#x received, state %x, se_cmd %p, " 3968 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3969 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3970 status, cmd->state, se_cmd); 3971 break; 3972 3973 case CTIO_PORT_LOGGED_OUT: 3974 case CTIO_PORT_UNAVAILABLE: 3975 { 3976 int logged_out = 3977 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3978 3979 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3980 "qla_target(%d): CTIO with %s status %x " 3981 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3982 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3983 status, cmd->state, se_cmd); 3984 3985 if (logged_out && cmd->sess) { 3986 /* 3987 * Session is already logged out, but we need 3988 * to notify initiator, who's not aware of this 3989 */ 3990 cmd->sess->send_els_logo = 1; 3991 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3992 "%s %d %8phC post del sess\n", 3993 __func__, __LINE__, cmd->sess->port_name); 3994 3995 qlt_schedule_sess_for_deletion(cmd->sess); 3996 } 3997 break; 3998 } 3999 case CTIO_DIF_ERROR: { 4000 struct ctio_crc_from_fw *crc = 4001 (struct ctio_crc_from_fw *)ctio; 4002 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4003 "qla_target(%d): CTIO with DIF_ERROR status %x " 4004 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4005 "expect_dif[0x%llx]\n", 4006 vha->vp_idx, status, cmd->state, se_cmd, 4007 *((u64 *)&crc->actual_dif[0]), 4008 *((u64 *)&crc->expected_dif[0])); 4009 4010 qlt_handle_dif_error(qpair, cmd, ctio); 4011 return; 4012 } 4013 4014 case CTIO_FAST_AUTH_ERR: 4015 case CTIO_FAST_INCOMP_PAD_LEN: 4016 case CTIO_FAST_INVALID_REQ: 4017 case CTIO_FAST_SPI_ERR: 4018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4019 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4020 vha->vp_idx, status, cmd->state, se_cmd); 4021 break; 4022 4023 default: 4024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4025 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4026 vha->vp_idx, status, cmd->state, se_cmd); 4027 break; 4028 } 4029 4030 4031 /* "cmd->aborted" means 4032 * cmd is already aborted/terminated, we don't 4033 * need to terminate again. The exchange is already 4034 * cleaned up/freed at FW level. Just cleanup at driver 4035 * level. 4036 */ 4037 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4038 (!cmd->aborted)) { 4039 cmd->trc_flags |= TRC_CTIO_ERR; 4040 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4041 return; 4042 } 4043 } 4044 4045 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4046 cmd->trc_flags |= TRC_CTIO_DONE; 4047 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4048 cmd->state = QLA_TGT_STATE_DATA_IN; 4049 4050 if (status == CTIO_SUCCESS) 4051 cmd->write_data_transferred = 1; 4052 4053 ha->tgt.tgt_ops->handle_data(cmd); 4054 return; 4055 } else if (cmd->aborted) { 4056 cmd->trc_flags |= TRC_CTIO_ABORTED; 4057 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4058 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4059 } else { 4060 cmd->trc_flags |= TRC_CTIO_STRANGE; 4061 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4062 "qla_target(%d): A command in state (%d) should " 4063 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4064 } 4065 4066 if (unlikely(status != CTIO_SUCCESS) && 4067 !cmd->aborted) { 4068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4069 dump_stack(); 4070 } 4071 4072 ha->tgt.tgt_ops->free_cmd(cmd); 4073 } 4074 4075 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4076 uint8_t task_codes) 4077 { 4078 int fcp_task_attr; 4079 4080 switch (task_codes) { 4081 case ATIO_SIMPLE_QUEUE: 4082 fcp_task_attr = TCM_SIMPLE_TAG; 4083 break; 4084 case ATIO_HEAD_OF_QUEUE: 4085 fcp_task_attr = TCM_HEAD_TAG; 4086 break; 4087 case ATIO_ORDERED_QUEUE: 4088 fcp_task_attr = TCM_ORDERED_TAG; 4089 break; 4090 case ATIO_ACA_QUEUE: 4091 fcp_task_attr = TCM_ACA_TAG; 4092 break; 4093 case ATIO_UNTAGGED: 4094 fcp_task_attr = TCM_SIMPLE_TAG; 4095 break; 4096 default: 4097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4098 "qla_target: unknown task code %x, use ORDERED instead\n", 4099 task_codes); 4100 fcp_task_attr = TCM_ORDERED_TAG; 4101 break; 4102 } 4103 4104 return fcp_task_attr; 4105 } 4106 4107 /* 4108 * Process context for I/O path into tcm_qla2xxx code 4109 */ 4110 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4111 { 4112 scsi_qla_host_t *vha = cmd->vha; 4113 struct qla_hw_data *ha = vha->hw; 4114 struct fc_port *sess = cmd->sess; 4115 struct atio_from_isp *atio = &cmd->atio; 4116 unsigned char *cdb; 4117 unsigned long flags; 4118 uint32_t data_length; 4119 int ret, fcp_task_attr, data_dir, bidi = 0; 4120 struct qla_qpair *qpair = cmd->qpair; 4121 4122 cmd->cmd_in_wq = 0; 4123 cmd->trc_flags |= TRC_DO_WORK; 4124 4125 if (cmd->aborted) { 4126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4127 "cmd with tag %u is aborted\n", 4128 cmd->atio.u.isp24.exchange_addr); 4129 goto out_term; 4130 } 4131 4132 spin_lock_init(&cmd->cmd_lock); 4133 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4134 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4135 4136 if (atio->u.isp24.fcp_cmnd.rddata && 4137 atio->u.isp24.fcp_cmnd.wrdata) { 4138 bidi = 1; 4139 data_dir = DMA_TO_DEVICE; 4140 } else if (atio->u.isp24.fcp_cmnd.rddata) 4141 data_dir = DMA_FROM_DEVICE; 4142 else if (atio->u.isp24.fcp_cmnd.wrdata) 4143 data_dir = DMA_TO_DEVICE; 4144 else 4145 data_dir = DMA_NONE; 4146 4147 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4148 atio->u.isp24.fcp_cmnd.task_attr); 4149 data_length = get_datalen_for_atio(atio); 4150 4151 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4152 fcp_task_attr, data_dir, bidi); 4153 if (ret != 0) 4154 goto out_term; 4155 /* 4156 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4157 */ 4158 ha->tgt.tgt_ops->put_sess(sess); 4159 return; 4160 4161 out_term: 4162 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4163 /* 4164 * cmd has not sent to target yet, so pass NULL as the second 4165 * argument to qlt_send_term_exchange() and free the memory here. 4166 */ 4167 cmd->trc_flags |= TRC_DO_WORK_ERR; 4168 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4169 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4170 4171 qlt_decr_num_pend_cmds(vha); 4172 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4173 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4174 4175 ha->tgt.tgt_ops->put_sess(sess); 4176 } 4177 4178 static void qlt_do_work(struct work_struct *work) 4179 { 4180 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4181 scsi_qla_host_t *vha = cmd->vha; 4182 unsigned long flags; 4183 4184 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4185 list_del(&cmd->cmd_list); 4186 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4187 4188 __qlt_do_work(cmd); 4189 } 4190 4191 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4192 { 4193 unsigned long flags; 4194 struct qla_hw_data *ha = vha->hw; 4195 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4196 void *node; 4197 u64 key = 0; 4198 4199 ql_log(ql_log_info, vha, 0x706c, 4200 "User update Number of Active Qpairs %d\n", 4201 ha->tgt.num_act_qpairs); 4202 4203 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4204 4205 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4206 btree_remove64(&tgt->lun_qpair_map, key); 4207 4208 ha->base_qpair->lun_cnt = 0; 4209 for (key = 0; key < ha->max_qpairs; key++) 4210 if (ha->queue_pair_map[key]) 4211 ha->queue_pair_map[key]->lun_cnt = 0; 4212 4213 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4214 } 4215 4216 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4217 struct qla_tgt_cmd *cmd) 4218 { 4219 struct qla_qpair *qpair, *qp; 4220 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4221 struct qla_qpair_hint *h; 4222 4223 if (vha->flags.qpairs_available) { 4224 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4225 if (unlikely(!h)) { 4226 /* spread lun to qpair ratio evently */ 4227 int lcnt = 0, rc; 4228 struct scsi_qla_host *base_vha = 4229 pci_get_drvdata(vha->hw->pdev); 4230 4231 qpair = vha->hw->base_qpair; 4232 if (qpair->lun_cnt == 0) { 4233 qpair->lun_cnt++; 4234 h = qla_qpair_to_hint(tgt, qpair); 4235 BUG_ON(!h); 4236 rc = btree_insert64(&tgt->lun_qpair_map, 4237 cmd->unpacked_lun, h, GFP_ATOMIC); 4238 if (rc) { 4239 qpair->lun_cnt--; 4240 ql_log(ql_log_info, vha, 0xd037, 4241 "Unable to insert lun %llx into lun_qpair_map\n", 4242 cmd->unpacked_lun); 4243 } 4244 goto out; 4245 } else { 4246 lcnt = qpair->lun_cnt; 4247 } 4248 4249 h = NULL; 4250 list_for_each_entry(qp, &base_vha->qp_list, 4251 qp_list_elem) { 4252 if (qp->lun_cnt == 0) { 4253 qp->lun_cnt++; 4254 h = qla_qpair_to_hint(tgt, qp); 4255 BUG_ON(!h); 4256 rc = btree_insert64(&tgt->lun_qpair_map, 4257 cmd->unpacked_lun, h, GFP_ATOMIC); 4258 if (rc) { 4259 qp->lun_cnt--; 4260 ql_log(ql_log_info, vha, 0xd038, 4261 "Unable to insert lun %llx into lun_qpair_map\n", 4262 cmd->unpacked_lun); 4263 } 4264 qpair = qp; 4265 goto out; 4266 } else { 4267 if (qp->lun_cnt < lcnt) { 4268 lcnt = qp->lun_cnt; 4269 qpair = qp; 4270 continue; 4271 } 4272 } 4273 } 4274 BUG_ON(!qpair); 4275 qpair->lun_cnt++; 4276 h = qla_qpair_to_hint(tgt, qpair); 4277 BUG_ON(!h); 4278 rc = btree_insert64(&tgt->lun_qpair_map, 4279 cmd->unpacked_lun, h, GFP_ATOMIC); 4280 if (rc) { 4281 qpair->lun_cnt--; 4282 ql_log(ql_log_info, vha, 0xd039, 4283 "Unable to insert lun %llx into lun_qpair_map\n", 4284 cmd->unpacked_lun); 4285 } 4286 } 4287 } else { 4288 h = &tgt->qphints[0]; 4289 } 4290 out: 4291 cmd->qpair = h->qpair; 4292 cmd->se_cmd.cpuid = h->cpuid; 4293 } 4294 4295 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4296 struct fc_port *sess, 4297 struct atio_from_isp *atio) 4298 { 4299 struct qla_tgt_cmd *cmd; 4300 4301 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4302 if (!cmd) 4303 return NULL; 4304 4305 cmd->cmd_type = TYPE_TGT_CMD; 4306 memcpy(&cmd->atio, atio, sizeof(*atio)); 4307 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4308 cmd->state = QLA_TGT_STATE_NEW; 4309 cmd->tgt = vha->vha_tgt.qla_tgt; 4310 qlt_incr_num_pend_cmds(vha); 4311 cmd->vha = vha; 4312 cmd->sess = sess; 4313 cmd->loop_id = sess->loop_id; 4314 cmd->conf_compl_supported = sess->conf_compl_supported; 4315 4316 cmd->trc_flags = 0; 4317 cmd->jiffies_at_alloc = get_jiffies_64(); 4318 4319 cmd->unpacked_lun = scsilun_to_int( 4320 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4321 qlt_assign_qpair(vha, cmd); 4322 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4323 cmd->vp_idx = vha->vp_idx; 4324 cmd->edif = sess->edif.enable; 4325 4326 return cmd; 4327 } 4328 4329 /* ha->hardware_lock supposed to be held on entry */ 4330 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4331 struct atio_from_isp *atio) 4332 { 4333 struct qla_hw_data *ha = vha->hw; 4334 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4335 struct fc_port *sess; 4336 struct qla_tgt_cmd *cmd; 4337 unsigned long flags; 4338 port_id_t id; 4339 4340 if (unlikely(tgt->tgt_stop)) { 4341 ql_dbg(ql_dbg_io, vha, 0x3061, 4342 "New command while device %p is shutting down\n", tgt); 4343 return -ENODEV; 4344 } 4345 4346 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4347 if (IS_SW_RESV_ADDR(id)) 4348 return -EBUSY; 4349 4350 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4351 if (unlikely(!sess)) 4352 return -EFAULT; 4353 4354 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4355 * session deletion, but it's still in sess_del_work wq */ 4356 if (sess->deleted) { 4357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4358 "New command while old session %p is being deleted\n", 4359 sess); 4360 return -EFAULT; 4361 } 4362 4363 /* 4364 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4365 */ 4366 if (!kref_get_unless_zero(&sess->sess_kref)) { 4367 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4368 "%s: kref_get fail, %8phC oxid %x \n", 4369 __func__, sess->port_name, 4370 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4371 return -EFAULT; 4372 } 4373 4374 cmd = qlt_get_tag(vha, sess, atio); 4375 if (!cmd) { 4376 ql_dbg(ql_dbg_io, vha, 0x3062, 4377 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4378 ha->tgt.tgt_ops->put_sess(sess); 4379 return -EBUSY; 4380 } 4381 4382 cmd->cmd_in_wq = 1; 4383 cmd->trc_flags |= TRC_NEW_CMD; 4384 4385 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4386 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4387 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4388 4389 INIT_WORK(&cmd->work, qlt_do_work); 4390 if (vha->flags.qpairs_available) { 4391 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4392 } else if (ha->msix_count) { 4393 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4394 queue_work(qla_tgt_wq, &cmd->work); 4395 else 4396 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4397 &cmd->work); 4398 } else { 4399 queue_work(qla_tgt_wq, &cmd->work); 4400 } 4401 4402 return 0; 4403 } 4404 4405 /* ha->hardware_lock supposed to be held on entry */ 4406 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4407 int fn, void *iocb, int flags) 4408 { 4409 struct scsi_qla_host *vha = sess->vha; 4410 struct qla_hw_data *ha = vha->hw; 4411 struct qla_tgt_mgmt_cmd *mcmd; 4412 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4413 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4414 4415 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4416 if (!mcmd) { 4417 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4418 "qla_target(%d): Allocation of management " 4419 "command failed, some commands and their data could " 4420 "leak\n", vha->vp_idx); 4421 return -ENOMEM; 4422 } 4423 memset(mcmd, 0, sizeof(*mcmd)); 4424 mcmd->sess = sess; 4425 4426 if (iocb) { 4427 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4428 sizeof(mcmd->orig_iocb.imm_ntfy)); 4429 } 4430 mcmd->tmr_func = fn; 4431 mcmd->flags = flags; 4432 mcmd->reset_count = ha->base_qpair->chip_reset; 4433 mcmd->qpair = h->qpair; 4434 mcmd->vha = vha; 4435 mcmd->se_cmd.cpuid = h->cpuid; 4436 mcmd->unpacked_lun = lun; 4437 4438 switch (fn) { 4439 case QLA_TGT_LUN_RESET: 4440 case QLA_TGT_CLEAR_TS: 4441 case QLA_TGT_ABORT_TS: 4442 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4443 fallthrough; 4444 case QLA_TGT_CLEAR_ACA: 4445 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4446 mcmd->qpair = h->qpair; 4447 mcmd->se_cmd.cpuid = h->cpuid; 4448 break; 4449 4450 case QLA_TGT_TARGET_RESET: 4451 case QLA_TGT_NEXUS_LOSS_SESS: 4452 case QLA_TGT_NEXUS_LOSS: 4453 case QLA_TGT_ABORT_ALL: 4454 default: 4455 /* no-op */ 4456 break; 4457 } 4458 4459 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4460 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4461 &mcmd->work); 4462 4463 return 0; 4464 } 4465 4466 /* ha->hardware_lock supposed to be held on entry */ 4467 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4468 { 4469 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4470 struct qla_hw_data *ha = vha->hw; 4471 struct fc_port *sess; 4472 u64 unpacked_lun; 4473 int fn; 4474 unsigned long flags; 4475 4476 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4477 4478 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4479 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4480 a->u.isp24.fcp_hdr.s_id); 4481 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4482 4483 unpacked_lun = 4484 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4485 4486 if (sess == NULL || sess->deleted) 4487 return -EFAULT; 4488 4489 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4490 } 4491 4492 /* ha->hardware_lock supposed to be held on entry */ 4493 static int __qlt_abort_task(struct scsi_qla_host *vha, 4494 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4495 { 4496 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4497 struct qla_hw_data *ha = vha->hw; 4498 struct qla_tgt_mgmt_cmd *mcmd; 4499 u64 unpacked_lun; 4500 int rc; 4501 4502 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4503 if (mcmd == NULL) { 4504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4505 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4506 vha->vp_idx, __func__); 4507 return -ENOMEM; 4508 } 4509 memset(mcmd, 0, sizeof(*mcmd)); 4510 4511 mcmd->sess = sess; 4512 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4513 sizeof(mcmd->orig_iocb.imm_ntfy)); 4514 4515 unpacked_lun = 4516 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4517 mcmd->reset_count = ha->base_qpair->chip_reset; 4518 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4519 mcmd->qpair = ha->base_qpair; 4520 4521 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4522 le16_to_cpu(iocb->u.isp2x.seq_id)); 4523 if (rc != 0) { 4524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4525 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4526 vha->vp_idx, rc); 4527 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4528 return -EFAULT; 4529 } 4530 4531 return 0; 4532 } 4533 4534 /* ha->hardware_lock supposed to be held on entry */ 4535 static int qlt_abort_task(struct scsi_qla_host *vha, 4536 struct imm_ntfy_from_isp *iocb) 4537 { 4538 struct qla_hw_data *ha = vha->hw; 4539 struct fc_port *sess; 4540 int loop_id; 4541 unsigned long flags; 4542 4543 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4544 4545 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4546 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4547 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4548 4549 if (sess == NULL) { 4550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4551 "qla_target(%d): task abort for unexisting " 4552 "session\n", vha->vp_idx); 4553 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4554 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4555 } 4556 4557 return __qlt_abort_task(vha, iocb, sess); 4558 } 4559 4560 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4561 { 4562 if (rc != MBS_COMMAND_COMPLETE) { 4563 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4564 "%s: se_sess %p / sess %p from" 4565 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4566 " LOGO failed: %#x\n", 4567 __func__, 4568 fcport->se_sess, 4569 fcport, 4570 fcport->port_name, fcport->loop_id, 4571 fcport->d_id.b.domain, fcport->d_id.b.area, 4572 fcport->d_id.b.al_pa, rc); 4573 } 4574 4575 fcport->logout_completed = 1; 4576 } 4577 4578 /* 4579 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4580 * 4581 * Schedules sessions with matching port_id/loop_id but different wwn for 4582 * deletion. Returns existing session with matching wwn if present. 4583 * Null otherwise. 4584 */ 4585 struct fc_port * 4586 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4587 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4588 { 4589 struct fc_port *sess = NULL, *other_sess; 4590 uint64_t other_wwn; 4591 4592 *conflict_sess = NULL; 4593 4594 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4595 4596 other_wwn = wwn_to_u64(other_sess->port_name); 4597 4598 if (wwn == other_wwn) { 4599 WARN_ON(sess); 4600 sess = other_sess; 4601 continue; 4602 } 4603 4604 /* find other sess with nport_id collision */ 4605 if (port_id.b24 == other_sess->d_id.b24) { 4606 if (loop_id != other_sess->loop_id) { 4607 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4608 "Invalidating sess %p loop_id %d wwn %llx.\n", 4609 other_sess, other_sess->loop_id, other_wwn); 4610 4611 /* 4612 * logout_on_delete is set by default, but another 4613 * session that has the same s_id/loop_id combo 4614 * might have cleared it when requested this session 4615 * deletion, so don't touch it 4616 */ 4617 qlt_schedule_sess_for_deletion(other_sess); 4618 } else { 4619 /* 4620 * Another wwn used to have our s_id/loop_id 4621 * kill the session, but don't free the loop_id 4622 */ 4623 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4624 "Invalidating sess %p loop_id %d wwn %llx.\n", 4625 other_sess, other_sess->loop_id, other_wwn); 4626 4627 other_sess->keep_nport_handle = 1; 4628 if (other_sess->disc_state != DSC_DELETED) 4629 *conflict_sess = other_sess; 4630 qlt_schedule_sess_for_deletion(other_sess); 4631 } 4632 continue; 4633 } 4634 4635 /* find other sess with nport handle collision */ 4636 if ((loop_id == other_sess->loop_id) && 4637 (loop_id != FC_NO_LOOP_ID)) { 4638 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4639 "Invalidating sess %p loop_id %d wwn %llx.\n", 4640 other_sess, other_sess->loop_id, other_wwn); 4641 4642 /* Same loop_id but different s_id 4643 * Ok to kill and logout */ 4644 qlt_schedule_sess_for_deletion(other_sess); 4645 } 4646 } 4647 4648 return sess; 4649 } 4650 4651 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4652 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4653 { 4654 struct qla_tgt_sess_op *op; 4655 struct qla_tgt_cmd *cmd; 4656 uint32_t key; 4657 int count = 0; 4658 unsigned long flags; 4659 4660 key = (((u32)s_id->b.domain << 16) | 4661 ((u32)s_id->b.area << 8) | 4662 ((u32)s_id->b.al_pa)); 4663 4664 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4665 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4666 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4667 4668 if (op_key == key) { 4669 op->aborted = true; 4670 count++; 4671 } 4672 } 4673 4674 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4675 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4676 4677 if (cmd_key == key) { 4678 cmd->aborted = 1; 4679 count++; 4680 } 4681 } 4682 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4683 4684 return count; 4685 } 4686 4687 static int qlt_handle_login(struct scsi_qla_host *vha, 4688 struct imm_ntfy_from_isp *iocb) 4689 { 4690 struct fc_port *sess = NULL, *conflict_sess = NULL; 4691 uint64_t wwn; 4692 port_id_t port_id; 4693 uint16_t loop_id, wd3_lo; 4694 int res = 0; 4695 struct qlt_plogi_ack_t *pla; 4696 unsigned long flags; 4697 4698 lockdep_assert_held(&vha->hw->hardware_lock); 4699 4700 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4701 4702 port_id.b.domain = iocb->u.isp24.port_id[2]; 4703 port_id.b.area = iocb->u.isp24.port_id[1]; 4704 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4705 port_id.b.rsvd_1 = 0; 4706 4707 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4708 4709 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4710 abort_cmds_for_s_id(vha, &port_id); 4711 4712 if (wwn) { 4713 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4714 sess = qlt_find_sess_invalidate_other(vha, wwn, 4715 port_id, loop_id, &conflict_sess); 4716 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4717 } else { 4718 ql_dbg(ql_dbg_disc, vha, 0xffff, 4719 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4720 __func__, __LINE__, loop_id, port_id.b24); 4721 qlt_send_term_imm_notif(vha, iocb, 1); 4722 goto out; 4723 } 4724 4725 if (IS_SW_RESV_ADDR(port_id)) { 4726 res = 1; 4727 goto out; 4728 } 4729 4730 if (vha->hw->flags.edif_enabled && 4731 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4732 iocb->u.isp24.status_subcode == ELS_PLOGI && 4733 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4734 ql_dbg(ql_dbg_disc, vha, 0xffff, 4735 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4736 __func__, __LINE__, loop_id, port_id.b24); 4737 qlt_send_term_imm_notif(vha, iocb, 1); 4738 goto out; 4739 } 4740 4741 if (vha->hw->flags.edif_enabled) { 4742 if (DBELL_INACTIVE(vha)) { 4743 ql_dbg(ql_dbg_disc, vha, 0xffff, 4744 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4745 __func__, __LINE__, loop_id, port_id.b24); 4746 qlt_send_term_imm_notif(vha, iocb, 1); 4747 goto out; 4748 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4749 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4750 ql_dbg(ql_dbg_disc, vha, 0xffff, 4751 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4752 __func__, __LINE__, loop_id, port_id.b24); 4753 qlt_send_term_imm_notif(vha, iocb, 1); 4754 goto out; 4755 } 4756 } 4757 4758 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4759 if (!pla) { 4760 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4761 "%s %d %8phC Term INOT due to mem alloc fail", 4762 __func__, __LINE__, 4763 iocb->u.isp24.port_name); 4764 qlt_send_term_imm_notif(vha, iocb, 1); 4765 goto out; 4766 } 4767 4768 if (conflict_sess) { 4769 conflict_sess->login_gen++; 4770 qlt_plogi_ack_link(vha, pla, conflict_sess, 4771 QLT_PLOGI_LINK_CONFLICT); 4772 } 4773 4774 if (!sess) { 4775 pla->ref_count++; 4776 ql_dbg(ql_dbg_disc, vha, 0xffff, 4777 "%s %d %8phC post new sess\n", 4778 __func__, __LINE__, iocb->u.isp24.port_name); 4779 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4780 qla24xx_post_newsess_work(vha, &port_id, 4781 iocb->u.isp24.port_name, 4782 iocb->u.isp24.u.plogi.node_name, 4783 pla, 0); 4784 else 4785 qla24xx_post_newsess_work(vha, &port_id, 4786 iocb->u.isp24.port_name, NULL, 4787 pla, 0); 4788 4789 goto out; 4790 } 4791 4792 if (sess->disc_state == DSC_UPD_FCPORT) { 4793 u16 sec; 4794 4795 /* 4796 * Remote port registration is still going on from 4797 * previous login. Allow it to finish before we 4798 * accept the new login. 4799 */ 4800 sess->next_disc_state = DSC_DELETE_PEND; 4801 sec = jiffies_to_msecs(jiffies - 4802 sess->jiffies_at_registration) / 1000; 4803 if (sess->sec_since_registration < sec && sec && 4804 !(sec % 5)) { 4805 sess->sec_since_registration = sec; 4806 ql_dbg(ql_dbg_disc, vha, 0xffff, 4807 "%s %8phC - Slow Rport registration (%d Sec)\n", 4808 __func__, sess->port_name, sec); 4809 } 4810 4811 if (!conflict_sess) { 4812 list_del(&pla->list); 4813 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4814 } 4815 4816 qlt_send_term_imm_notif(vha, iocb, 1); 4817 goto out; 4818 } 4819 4820 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4821 sess->d_id = port_id; 4822 sess->login_gen++; 4823 sess->loop_id = loop_id; 4824 4825 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4826 /* remote port has assigned Port ID */ 4827 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4828 vha->d_id = sess->d_id; 4829 4830 ql_dbg(ql_dbg_disc, vha, 0xffff, 4831 "%s %8phC - send port online\n", 4832 __func__, sess->port_name); 4833 4834 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4835 sess->d_id.b24); 4836 } 4837 4838 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4839 sess->fw_login_state = DSC_LS_PRLI_PEND; 4840 sess->local = 0; 4841 sess->loop_id = loop_id; 4842 sess->d_id = port_id; 4843 sess->fw_login_state = DSC_LS_PRLI_PEND; 4844 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4845 4846 if (wd3_lo & BIT_7) 4847 sess->conf_compl_supported = 1; 4848 4849 if ((wd3_lo & BIT_4) == 0) 4850 sess->port_type = FCT_INITIATOR; 4851 else 4852 sess->port_type = FCT_TARGET; 4853 4854 } else 4855 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4856 4857 4858 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4859 "%s %d %8phC DS %d\n", 4860 __func__, __LINE__, sess->port_name, sess->disc_state); 4861 4862 switch (sess->disc_state) { 4863 case DSC_DELETED: 4864 case DSC_LOGIN_PEND: 4865 qlt_plogi_ack_unref(vha, pla); 4866 break; 4867 4868 default: 4869 /* 4870 * Under normal circumstances we want to release nport handle 4871 * during LOGO process to avoid nport handle leaks inside FW. 4872 * The exception is when LOGO is done while another PLOGI with 4873 * the same nport handle is waiting as might be the case here. 4874 * Note: there is always a possibily of a race where session 4875 * deletion has already started for other reasons (e.g. ACL 4876 * removal) and now PLOGI arrives: 4877 * 1. if PLOGI arrived in FW after nport handle has been freed, 4878 * FW must have assigned this PLOGI a new/same handle and we 4879 * can proceed ACK'ing it as usual when session deletion 4880 * completes. 4881 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4882 * bit reached it, the handle has now been released. We'll 4883 * get an error when we ACK this PLOGI. Nothing will be sent 4884 * back to initiator. Initiator should eventually retry 4885 * PLOGI and situation will correct itself. 4886 */ 4887 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4888 (sess->d_id.b24 == port_id.b24)); 4889 4890 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4891 "%s %d %8phC post del sess\n", 4892 __func__, __LINE__, sess->port_name); 4893 4894 4895 qlt_schedule_sess_for_deletion(sess); 4896 break; 4897 } 4898 out: 4899 return res; 4900 } 4901 4902 /* 4903 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4904 */ 4905 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4906 struct imm_ntfy_from_isp *iocb) 4907 { 4908 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4909 struct qla_hw_data *ha = vha->hw; 4910 struct fc_port *sess = NULL, *conflict_sess = NULL; 4911 uint64_t wwn; 4912 port_id_t port_id; 4913 uint16_t loop_id; 4914 uint16_t wd3_lo; 4915 int res = 0; 4916 unsigned long flags; 4917 4918 lockdep_assert_held(&ha->hardware_lock); 4919 4920 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4921 4922 port_id.b.domain = iocb->u.isp24.port_id[2]; 4923 port_id.b.area = iocb->u.isp24.port_id[1]; 4924 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4925 port_id.b.rsvd_1 = 0; 4926 4927 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4928 4929 ql_dbg(ql_dbg_disc, vha, 0xf026, 4930 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4931 vha->vp_idx, iocb->u.isp24.port_id[2], 4932 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4933 iocb->u.isp24.status_subcode, loop_id, 4934 iocb->u.isp24.port_name); 4935 4936 /* res = 1 means ack at the end of thread 4937 * res = 0 means ack async/later. 4938 */ 4939 switch (iocb->u.isp24.status_subcode) { 4940 case ELS_PLOGI: 4941 res = qlt_handle_login(vha, iocb); 4942 break; 4943 4944 case ELS_PRLI: 4945 if (N2N_TOPO(ha)) { 4946 sess = qla2x00_find_fcport_by_wwpn(vha, 4947 iocb->u.isp24.port_name, 1); 4948 4949 if (vha->hw->flags.edif_enabled && sess && 4950 (!(sess->flags & FCF_FCSP_DEVICE) || 4951 !sess->edif.authok)) { 4952 ql_dbg(ql_dbg_disc, vha, 0xffff, 4953 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 4954 __func__, __LINE__, iocb->u.isp24.port_name); 4955 qlt_send_term_imm_notif(vha, iocb, 1); 4956 break; 4957 } 4958 4959 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4960 ql_dbg(ql_dbg_disc, vha, 0xffff, 4961 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4962 __func__, __LINE__, 4963 iocb->u.isp24.port_name); 4964 qlt_send_term_imm_notif(vha, iocb, 1); 4965 break; 4966 } 4967 4968 res = qlt_handle_login(vha, iocb); 4969 break; 4970 } 4971 4972 if (IS_SW_RESV_ADDR(port_id)) { 4973 res = 1; 4974 break; 4975 } 4976 4977 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4978 4979 if (wwn) { 4980 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4981 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4982 loop_id, &conflict_sess); 4983 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4984 } 4985 4986 if (conflict_sess) { 4987 switch (conflict_sess->disc_state) { 4988 case DSC_DELETED: 4989 case DSC_DELETE_PEND: 4990 break; 4991 default: 4992 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4993 "PRLI with conflicting sess %p port %8phC\n", 4994 conflict_sess, conflict_sess->port_name); 4995 conflict_sess->fw_login_state = 4996 DSC_LS_PORT_UNAVAIL; 4997 qlt_send_term_imm_notif(vha, iocb, 1); 4998 res = 0; 4999 break; 5000 } 5001 } 5002 5003 if (sess != NULL) { 5004 bool delete = false; 5005 int sec; 5006 5007 if (vha->hw->flags.edif_enabled && sess && 5008 (!(sess->flags & FCF_FCSP_DEVICE) || 5009 !sess->edif.authok)) { 5010 ql_dbg(ql_dbg_disc, vha, 0xffff, 5011 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5012 __func__, __LINE__, iocb->u.isp24.port_name); 5013 qlt_send_term_imm_notif(vha, iocb, 1); 5014 break; 5015 } 5016 5017 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5018 switch (sess->fw_login_state) { 5019 case DSC_LS_PLOGI_PEND: 5020 case DSC_LS_PLOGI_COMP: 5021 case DSC_LS_PRLI_COMP: 5022 break; 5023 default: 5024 delete = true; 5025 break; 5026 } 5027 5028 switch (sess->disc_state) { 5029 case DSC_UPD_FCPORT: 5030 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5031 flags); 5032 5033 sec = jiffies_to_msecs(jiffies - 5034 sess->jiffies_at_registration)/1000; 5035 if (sess->sec_since_registration < sec && sec && 5036 !(sec % 5)) { 5037 sess->sec_since_registration = sec; 5038 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5039 "%s %8phC : Slow Rport registration(%d Sec)\n", 5040 __func__, sess->port_name, sec); 5041 } 5042 qlt_send_term_imm_notif(vha, iocb, 1); 5043 return 0; 5044 5045 case DSC_LOGIN_PEND: 5046 case DSC_GPDB: 5047 case DSC_LOGIN_COMPLETE: 5048 case DSC_ADISC: 5049 delete = false; 5050 break; 5051 default: 5052 break; 5053 } 5054 5055 if (delete) { 5056 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5057 flags); 5058 /* 5059 * Impatient initiator sent PRLI before last 5060 * PLOGI could finish. Will force him to re-try, 5061 * while last one finishes. 5062 */ 5063 ql_log(ql_log_warn, sess->vha, 0xf095, 5064 "sess %p PRLI received, before plogi ack.\n", 5065 sess); 5066 qlt_send_term_imm_notif(vha, iocb, 1); 5067 res = 0; 5068 break; 5069 } 5070 5071 /* 5072 * This shouldn't happen under normal circumstances, 5073 * since we have deleted the old session during PLOGI 5074 */ 5075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5076 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5077 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5078 5079 sess->local = 0; 5080 sess->loop_id = loop_id; 5081 sess->d_id = port_id; 5082 sess->fw_login_state = DSC_LS_PRLI_PEND; 5083 5084 if (wd3_lo & BIT_7) 5085 sess->conf_compl_supported = 1; 5086 5087 if ((wd3_lo & BIT_4) == 0) 5088 sess->port_type = FCT_INITIATOR; 5089 else 5090 sess->port_type = FCT_TARGET; 5091 5092 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5093 } 5094 res = 1; /* send notify ack */ 5095 5096 /* Make session global (not used in fabric mode) */ 5097 if (ha->current_topology != ISP_CFG_F) { 5098 if (sess) { 5099 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5100 "%s %d %8phC post nack\n", 5101 __func__, __LINE__, sess->port_name); 5102 qla24xx_post_nack_work(vha, sess, iocb, 5103 SRB_NACK_PRLI); 5104 res = 0; 5105 } else { 5106 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5107 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5108 qla2xxx_wake_dpc(vha); 5109 } 5110 } else { 5111 if (sess) { 5112 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5113 "%s %d %8phC post nack\n", 5114 __func__, __LINE__, sess->port_name); 5115 qla24xx_post_nack_work(vha, sess, iocb, 5116 SRB_NACK_PRLI); 5117 res = 0; 5118 } 5119 } 5120 break; 5121 5122 case ELS_TPRLO: 5123 if (le16_to_cpu(iocb->u.isp24.flags) & 5124 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5125 loop_id = 0xFFFF; 5126 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5127 res = 1; 5128 break; 5129 } 5130 fallthrough; 5131 case ELS_LOGO: 5132 case ELS_PRLO: 5133 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5134 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5136 5137 if (sess) { 5138 sess->login_gen++; 5139 sess->fw_login_state = DSC_LS_LOGO_PEND; 5140 sess->logo_ack_needed = 1; 5141 memcpy(sess->iocb, iocb, IOCB_SIZE); 5142 } 5143 5144 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5145 5146 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5147 "%s: logo %llx res %d sess %p ", 5148 __func__, wwn, res, sess); 5149 if (res == 0) { 5150 /* 5151 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5152 * for LOGO_ACK & sess delete 5153 */ 5154 BUG_ON(!sess); 5155 res = 0; 5156 } else { 5157 /* cmd did not go to upper layer. */ 5158 if (sess) { 5159 qlt_schedule_sess_for_deletion(sess); 5160 res = 0; 5161 } 5162 /* else logo will be ack */ 5163 } 5164 break; 5165 case ELS_PDISC: 5166 case ELS_ADISC: 5167 { 5168 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5169 5170 if (tgt->link_reinit_iocb_pending) { 5171 qlt_send_notify_ack(ha->base_qpair, 5172 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5173 tgt->link_reinit_iocb_pending = 0; 5174 } 5175 5176 sess = qla2x00_find_fcport_by_wwpn(vha, 5177 iocb->u.isp24.port_name, 1); 5178 if (sess) { 5179 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5180 "sess %p lid %d|%d DS %d LS %d\n", 5181 sess, sess->loop_id, loop_id, 5182 sess->disc_state, sess->fw_login_state); 5183 } 5184 5185 res = 1; /* send notify ack */ 5186 break; 5187 } 5188 5189 case ELS_FLOGI: /* should never happen */ 5190 default: 5191 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5192 "qla_target(%d): Unsupported ELS command %x " 5193 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5194 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5195 break; 5196 } 5197 5198 ql_dbg(ql_dbg_disc, vha, 0xf026, 5199 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5200 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5201 5202 return res; 5203 } 5204 5205 /* 5206 * ha->hardware_lock supposed to be held on entry. 5207 * Might drop it, then reacquire. 5208 */ 5209 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5210 struct imm_ntfy_from_isp *iocb) 5211 { 5212 struct qla_hw_data *ha = vha->hw; 5213 uint32_t add_flags = 0; 5214 int send_notify_ack = 1; 5215 uint16_t status; 5216 5217 lockdep_assert_held(&ha->hardware_lock); 5218 5219 status = le16_to_cpu(iocb->u.isp2x.status); 5220 switch (status) { 5221 case IMM_NTFY_LIP_RESET: 5222 { 5223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5224 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5225 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5226 iocb->u.isp24.status_subcode); 5227 5228 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5229 send_notify_ack = 0; 5230 break; 5231 } 5232 5233 case IMM_NTFY_LIP_LINK_REINIT: 5234 { 5235 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5236 5237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5238 "qla_target(%d): LINK REINIT (loop %#x, " 5239 "subcode %x)\n", vha->vp_idx, 5240 le16_to_cpu(iocb->u.isp24.nport_handle), 5241 iocb->u.isp24.status_subcode); 5242 if (tgt->link_reinit_iocb_pending) { 5243 qlt_send_notify_ack(ha->base_qpair, 5244 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5245 } 5246 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5247 tgt->link_reinit_iocb_pending = 1; 5248 /* 5249 * QLogic requires to wait after LINK REINIT for possible 5250 * PDISC or ADISC ELS commands 5251 */ 5252 send_notify_ack = 0; 5253 break; 5254 } 5255 5256 case IMM_NTFY_PORT_LOGOUT: 5257 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5258 "qla_target(%d): Port logout (loop " 5259 "%#x, subcode %x)\n", vha->vp_idx, 5260 le16_to_cpu(iocb->u.isp24.nport_handle), 5261 iocb->u.isp24.status_subcode); 5262 5263 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5264 send_notify_ack = 0; 5265 /* The sessions will be cleared in the callback, if needed */ 5266 break; 5267 5268 case IMM_NTFY_GLBL_TPRLO: 5269 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5270 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5271 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5272 send_notify_ack = 0; 5273 /* The sessions will be cleared in the callback, if needed */ 5274 break; 5275 5276 case IMM_NTFY_PORT_CONFIG: 5277 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5278 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5279 status); 5280 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5281 send_notify_ack = 0; 5282 /* The sessions will be cleared in the callback, if needed */ 5283 break; 5284 5285 case IMM_NTFY_GLBL_LOGO: 5286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5287 "qla_target(%d): Link failure detected\n", 5288 vha->vp_idx); 5289 /* I_T nexus loss */ 5290 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5291 send_notify_ack = 0; 5292 break; 5293 5294 case IMM_NTFY_IOCB_OVERFLOW: 5295 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5296 "qla_target(%d): Cannot provide requested " 5297 "capability (IOCB overflowed the immediate notify " 5298 "resource count)\n", vha->vp_idx); 5299 break; 5300 5301 case IMM_NTFY_ABORT_TASK: 5302 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5303 "qla_target(%d): Abort Task (S %08x I %#x -> " 5304 "L %#x)\n", vha->vp_idx, 5305 le16_to_cpu(iocb->u.isp2x.seq_id), 5306 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5307 le16_to_cpu(iocb->u.isp2x.lun)); 5308 if (qlt_abort_task(vha, iocb) == 0) 5309 send_notify_ack = 0; 5310 break; 5311 5312 case IMM_NTFY_RESOURCE: 5313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5314 "qla_target(%d): Out of resources, host %ld\n", 5315 vha->vp_idx, vha->host_no); 5316 break; 5317 5318 case IMM_NTFY_MSG_RX: 5319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5320 "qla_target(%d): Immediate notify task %x\n", 5321 vha->vp_idx, iocb->u.isp2x.task_flags); 5322 break; 5323 5324 case IMM_NTFY_ELS: 5325 if (qlt_24xx_handle_els(vha, iocb) == 0) 5326 send_notify_ack = 0; 5327 break; 5328 default: 5329 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5330 "qla_target(%d): Received unknown immediate " 5331 "notify status %x\n", vha->vp_idx, status); 5332 break; 5333 } 5334 5335 if (send_notify_ack) 5336 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5337 0, 0); 5338 } 5339 5340 /* 5341 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5342 * This function sends busy to ISP 2xxx or 24xx. 5343 */ 5344 static int __qlt_send_busy(struct qla_qpair *qpair, 5345 struct atio_from_isp *atio, uint16_t status) 5346 { 5347 struct scsi_qla_host *vha = qpair->vha; 5348 struct ctio7_to_24xx *ctio24; 5349 struct qla_hw_data *ha = vha->hw; 5350 request_t *pkt; 5351 struct fc_port *sess = NULL; 5352 unsigned long flags; 5353 u16 temp; 5354 port_id_t id; 5355 5356 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5357 5358 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5359 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5360 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5361 if (!sess) { 5362 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5363 return 0; 5364 } 5365 /* Sending marker isn't necessary, since we called from ISR */ 5366 5367 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5368 if (!pkt) { 5369 ql_dbg(ql_dbg_io, vha, 0x3063, 5370 "qla_target(%d): %s failed: unable to allocate " 5371 "request packet", vha->vp_idx, __func__); 5372 return -ENOMEM; 5373 } 5374 5375 qpair->tgt_counters.num_q_full_sent++; 5376 pkt->entry_count = 1; 5377 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5378 5379 ctio24 = (struct ctio7_to_24xx *)pkt; 5380 ctio24->entry_type = CTIO_TYPE7; 5381 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5382 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5383 ctio24->vp_index = vha->vp_idx; 5384 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5385 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5386 temp = (atio->u.isp24.attr << 9) | 5387 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5388 CTIO7_FLAGS_DONT_RET_CTIO; 5389 ctio24->u.status1.flags = cpu_to_le16(temp); 5390 /* 5391 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5392 * if the explicit conformation is used. 5393 */ 5394 ctio24->u.status1.ox_id = 5395 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5396 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5397 5398 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5399 5400 if (ctio24->u.status1.residual != 0) 5401 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5402 5403 /* Memory Barrier */ 5404 wmb(); 5405 if (qpair->reqq_start_iocbs) 5406 qpair->reqq_start_iocbs(qpair); 5407 else 5408 qla2x00_start_iocbs(vha, qpair->req); 5409 return 0; 5410 } 5411 5412 /* 5413 * This routine is used to allocate a command for either a QFull condition 5414 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5415 * out previously. 5416 */ 5417 static void 5418 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5419 struct atio_from_isp *atio, uint16_t status, int qfull) 5420 { 5421 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5422 struct qla_hw_data *ha = vha->hw; 5423 struct fc_port *sess; 5424 struct qla_tgt_cmd *cmd; 5425 unsigned long flags; 5426 5427 if (unlikely(tgt->tgt_stop)) { 5428 ql_dbg(ql_dbg_io, vha, 0x300a, 5429 "New command while device %p is shutting down\n", tgt); 5430 return; 5431 } 5432 5433 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5434 vha->hw->tgt.num_qfull_cmds_dropped++; 5435 if (vha->hw->tgt.num_qfull_cmds_dropped > 5436 vha->qla_stats.stat_max_qfull_cmds_dropped) 5437 vha->qla_stats.stat_max_qfull_cmds_dropped = 5438 vha->hw->tgt.num_qfull_cmds_dropped; 5439 5440 ql_dbg(ql_dbg_io, vha, 0x3068, 5441 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5442 vha->vp_idx, __func__, 5443 vha->hw->tgt.num_qfull_cmds_dropped); 5444 5445 qlt_chk_exch_leak_thresh_hold(vha); 5446 return; 5447 } 5448 5449 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5450 (vha, atio->u.isp24.fcp_hdr.s_id); 5451 if (!sess) 5452 return; 5453 5454 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5455 if (!cmd) { 5456 ql_dbg(ql_dbg_io, vha, 0x3009, 5457 "qla_target(%d): %s: Allocation of cmd failed\n", 5458 vha->vp_idx, __func__); 5459 5460 vha->hw->tgt.num_qfull_cmds_dropped++; 5461 if (vha->hw->tgt.num_qfull_cmds_dropped > 5462 vha->qla_stats.stat_max_qfull_cmds_dropped) 5463 vha->qla_stats.stat_max_qfull_cmds_dropped = 5464 vha->hw->tgt.num_qfull_cmds_dropped; 5465 5466 qlt_chk_exch_leak_thresh_hold(vha); 5467 return; 5468 } 5469 5470 qlt_incr_num_pend_cmds(vha); 5471 INIT_LIST_HEAD(&cmd->cmd_list); 5472 memcpy(&cmd->atio, atio, sizeof(*atio)); 5473 5474 cmd->tgt = vha->vha_tgt.qla_tgt; 5475 cmd->vha = vha; 5476 cmd->reset_count = ha->base_qpair->chip_reset; 5477 cmd->q_full = 1; 5478 cmd->qpair = ha->base_qpair; 5479 5480 if (qfull) { 5481 cmd->q_full = 1; 5482 /* NOTE: borrowing the state field to carry the status */ 5483 cmd->state = status; 5484 } else 5485 cmd->term_exchg = 1; 5486 5487 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5488 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5489 5490 vha->hw->tgt.num_qfull_cmds_alloc++; 5491 if (vha->hw->tgt.num_qfull_cmds_alloc > 5492 vha->qla_stats.stat_max_qfull_cmds_alloc) 5493 vha->qla_stats.stat_max_qfull_cmds_alloc = 5494 vha->hw->tgt.num_qfull_cmds_alloc; 5495 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5496 } 5497 5498 static void 5499 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5500 uint16_t status) 5501 { 5502 int rc = 0; 5503 struct scsi_qla_host *vha = qpair->vha; 5504 5505 rc = __qlt_send_busy(qpair, atio, status); 5506 if (rc == -ENOMEM) 5507 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5508 } 5509 5510 static int 5511 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5512 struct atio_from_isp *atio, uint8_t ha_locked) 5513 { 5514 struct qla_hw_data *ha = vha->hw; 5515 unsigned long flags; 5516 5517 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5518 return 0; 5519 5520 if (!ha_locked) 5521 spin_lock_irqsave(&ha->hardware_lock, flags); 5522 qlt_send_busy(qpair, atio, qla_sam_status); 5523 if (!ha_locked) 5524 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5525 5526 return 1; 5527 } 5528 5529 /* ha->hardware_lock supposed to be held on entry */ 5530 /* called via callback from qla2xxx */ 5531 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5532 struct atio_from_isp *atio, uint8_t ha_locked) 5533 { 5534 struct qla_hw_data *ha = vha->hw; 5535 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5536 int rc; 5537 unsigned long flags = 0; 5538 5539 if (unlikely(tgt == NULL)) { 5540 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5541 "ATIO pkt, but no tgt (ha %p)", ha); 5542 return; 5543 } 5544 /* 5545 * In tgt_stop mode we also should allow all requests to pass. 5546 * Otherwise, some commands can stuck. 5547 */ 5548 5549 tgt->atio_irq_cmd_count++; 5550 5551 switch (atio->u.raw.entry_type) { 5552 case ATIO_TYPE7: 5553 if (unlikely(atio->u.isp24.exchange_addr == 5554 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5555 ql_dbg(ql_dbg_io, vha, 0x3065, 5556 "qla_target(%d): ATIO_TYPE7 " 5557 "received with UNKNOWN exchange address, " 5558 "sending QUEUE_FULL\n", vha->vp_idx); 5559 if (!ha_locked) 5560 spin_lock_irqsave(&ha->hardware_lock, flags); 5561 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5562 if (!ha_locked) 5563 spin_unlock_irqrestore(&ha->hardware_lock, 5564 flags); 5565 break; 5566 } 5567 5568 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5569 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5570 atio, ha_locked); 5571 if (rc != 0) { 5572 tgt->atio_irq_cmd_count--; 5573 return; 5574 } 5575 rc = qlt_handle_cmd_for_atio(vha, atio); 5576 } else { 5577 rc = qlt_handle_task_mgmt(vha, atio); 5578 } 5579 if (unlikely(rc != 0)) { 5580 if (!ha_locked) 5581 spin_lock_irqsave(&ha->hardware_lock, flags); 5582 switch (rc) { 5583 case -ENODEV: 5584 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5585 "qla_target: Unable to send command to target\n"); 5586 break; 5587 case -EBADF: 5588 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5589 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5590 qlt_send_term_exchange(ha->base_qpair, NULL, 5591 atio, 1, 0); 5592 break; 5593 case -EBUSY: 5594 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5595 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5596 vha->vp_idx); 5597 qlt_send_busy(ha->base_qpair, atio, 5598 tc_sam_status); 5599 break; 5600 default: 5601 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5602 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5603 vha->vp_idx); 5604 qlt_send_busy(ha->base_qpair, atio, 5605 qla_sam_status); 5606 break; 5607 } 5608 if (!ha_locked) 5609 spin_unlock_irqrestore(&ha->hardware_lock, 5610 flags); 5611 } 5612 break; 5613 5614 case IMMED_NOTIFY_TYPE: 5615 { 5616 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5617 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5618 "qla_target(%d): Received ATIO packet %x " 5619 "with error status %x\n", vha->vp_idx, 5620 atio->u.raw.entry_type, 5621 atio->u.isp2x.entry_status); 5622 break; 5623 } 5624 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5625 5626 if (!ha_locked) 5627 spin_lock_irqsave(&ha->hardware_lock, flags); 5628 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5629 if (!ha_locked) 5630 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5631 break; 5632 } 5633 5634 default: 5635 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5636 "qla_target(%d): Received unknown ATIO atio " 5637 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5638 break; 5639 } 5640 5641 tgt->atio_irq_cmd_count--; 5642 } 5643 5644 /* 5645 * qpair lock is assume to be held 5646 * rc = 0 : send terminate & abts respond 5647 * rc != 0: do not send term & abts respond 5648 */ 5649 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5650 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5651 { 5652 struct qla_hw_data *ha = vha->hw; 5653 int rc = 0; 5654 5655 /* 5656 * Detect unresolved exchange. If the same ABTS is unable 5657 * to terminate an existing command and the same ABTS loops 5658 * between FW & Driver, then force FW dump. Under 1 jiff, 5659 * we should see multiple loops. 5660 */ 5661 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5662 qpair->retry_term_jiff == jiffies) { 5663 /* found existing exchange */ 5664 qpair->retry_term_cnt++; 5665 if (qpair->retry_term_cnt >= 5) { 5666 rc = -EIO; 5667 qpair->retry_term_cnt = 0; 5668 ql_log(ql_log_warn, vha, 0xffff, 5669 "Unable to send ABTS Respond. Dumping firmware.\n"); 5670 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5671 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5672 5673 if (qpair == ha->base_qpair) 5674 ha->isp_ops->fw_dump(vha); 5675 else 5676 qla2xxx_dump_fw(vha); 5677 5678 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5679 qla2xxx_wake_dpc(vha); 5680 } 5681 } else if (qpair->retry_term_jiff != jiffies) { 5682 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5683 qpair->retry_term_cnt = 0; 5684 qpair->retry_term_jiff = jiffies; 5685 } 5686 5687 return rc; 5688 } 5689 5690 5691 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5692 struct rsp_que *rsp, response_t *pkt) 5693 { 5694 struct abts_resp_from_24xx_fw *entry = 5695 (struct abts_resp_from_24xx_fw *)pkt; 5696 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5697 struct qla_tgt_mgmt_cmd *mcmd; 5698 struct qla_hw_data *ha = vha->hw; 5699 5700 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5701 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5702 ql_dbg(ql_dbg_async, vha, 0xe064, 5703 "qla_target(%d): ABTS Comp without mcmd\n", 5704 vha->vp_idx); 5705 return; 5706 } 5707 5708 if (mcmd) 5709 vha = mcmd->vha; 5710 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5711 5712 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5713 "ABTS_RESP_24XX: compl_status %x\n", 5714 entry->compl_status); 5715 5716 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5717 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5718 le32_to_cpu(entry->error_subcode2) == 0) { 5719 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5720 ha->tgt.tgt_ops->free_mcmd(mcmd); 5721 return; 5722 } 5723 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5724 pkt, mcmd); 5725 } else { 5726 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5727 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5728 vha->vp_idx, entry->compl_status, 5729 entry->error_subcode1, 5730 entry->error_subcode2); 5731 ha->tgt.tgt_ops->free_mcmd(mcmd); 5732 } 5733 } else if (mcmd) { 5734 ha->tgt.tgt_ops->free_mcmd(mcmd); 5735 } 5736 } 5737 5738 /* ha->hardware_lock supposed to be held on entry */ 5739 /* called via callback from qla2xxx */ 5740 static void qlt_response_pkt(struct scsi_qla_host *vha, 5741 struct rsp_que *rsp, response_t *pkt) 5742 { 5743 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5744 5745 if (unlikely(tgt == NULL)) { 5746 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5747 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5748 vha->vp_idx, pkt->entry_type, vha->hw); 5749 return; 5750 } 5751 5752 /* 5753 * In tgt_stop mode we also should allow all requests to pass. 5754 * Otherwise, some commands can stuck. 5755 */ 5756 5757 switch (pkt->entry_type) { 5758 case CTIO_CRC2: 5759 case CTIO_TYPE7: 5760 { 5761 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5762 5763 qlt_do_ctio_completion(vha, rsp, entry->handle, 5764 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5765 entry); 5766 break; 5767 } 5768 5769 case ACCEPT_TGT_IO_TYPE: 5770 { 5771 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5772 int rc; 5773 5774 if (atio->u.isp2x.status != 5775 cpu_to_le16(ATIO_CDB_VALID)) { 5776 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5777 "qla_target(%d): ATIO with error " 5778 "status %x received\n", vha->vp_idx, 5779 le16_to_cpu(atio->u.isp2x.status)); 5780 break; 5781 } 5782 5783 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5784 if (rc != 0) 5785 return; 5786 5787 rc = qlt_handle_cmd_for_atio(vha, atio); 5788 if (unlikely(rc != 0)) { 5789 switch (rc) { 5790 case -ENODEV: 5791 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5792 "qla_target: Unable to send command to target\n"); 5793 break; 5794 case -EBADF: 5795 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5796 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5797 qlt_send_term_exchange(rsp->qpair, NULL, 5798 atio, 1, 0); 5799 break; 5800 case -EBUSY: 5801 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5802 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5803 vha->vp_idx); 5804 qlt_send_busy(rsp->qpair, atio, 5805 tc_sam_status); 5806 break; 5807 default: 5808 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5809 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5810 vha->vp_idx); 5811 qlt_send_busy(rsp->qpair, atio, 5812 qla_sam_status); 5813 break; 5814 } 5815 } 5816 } 5817 break; 5818 5819 case CONTINUE_TGT_IO_TYPE: 5820 { 5821 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5822 5823 qlt_do_ctio_completion(vha, rsp, entry->handle, 5824 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5825 entry); 5826 break; 5827 } 5828 5829 case CTIO_A64_TYPE: 5830 { 5831 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5832 5833 qlt_do_ctio_completion(vha, rsp, entry->handle, 5834 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5835 entry); 5836 break; 5837 } 5838 5839 case IMMED_NOTIFY_TYPE: 5840 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5841 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5842 break; 5843 5844 case NOTIFY_ACK_TYPE: 5845 if (tgt->notify_ack_expected > 0) { 5846 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5847 5848 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5849 "NOTIFY_ACK seq %08x status %x\n", 5850 le16_to_cpu(entry->u.isp2x.seq_id), 5851 le16_to_cpu(entry->u.isp2x.status)); 5852 tgt->notify_ack_expected--; 5853 if (entry->u.isp2x.status != 5854 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5855 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5856 "qla_target(%d): NOTIFY_ACK " 5857 "failed %x\n", vha->vp_idx, 5858 le16_to_cpu(entry->u.isp2x.status)); 5859 } 5860 } else { 5861 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5862 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5863 vha->vp_idx); 5864 } 5865 break; 5866 5867 case ABTS_RECV_24XX: 5868 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5869 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5870 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5871 break; 5872 5873 case ABTS_RESP_24XX: 5874 if (tgt->abts_resp_expected > 0) { 5875 qlt_handle_abts_completion(vha, rsp, pkt); 5876 } else { 5877 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5878 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5879 "received\n", vha->vp_idx); 5880 } 5881 break; 5882 5883 default: 5884 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5885 "qla_target(%d): Received unknown response pkt " 5886 "type %x\n", vha->vp_idx, pkt->entry_type); 5887 break; 5888 } 5889 5890 } 5891 5892 /* 5893 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5894 */ 5895 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5896 uint16_t *mailbox) 5897 { 5898 struct qla_hw_data *ha = vha->hw; 5899 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5900 int login_code; 5901 5902 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5903 return; 5904 5905 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5906 IS_QLA2100(ha)) 5907 return; 5908 /* 5909 * In tgt_stop mode we also should allow all requests to pass. 5910 * Otherwise, some commands can stuck. 5911 */ 5912 5913 5914 switch (code) { 5915 case MBA_RESET: /* Reset */ 5916 case MBA_SYSTEM_ERR: /* System Error */ 5917 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5918 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5919 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5920 "qla_target(%d): System error async event %#x " 5921 "occurred", vha->vp_idx, code); 5922 break; 5923 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5924 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5925 break; 5926 5927 case MBA_LOOP_UP: 5928 { 5929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5930 "qla_target(%d): Async LOOP_UP occurred " 5931 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5932 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5933 if (tgt->link_reinit_iocb_pending) { 5934 qlt_send_notify_ack(ha->base_qpair, 5935 &tgt->link_reinit_iocb, 5936 0, 0, 0, 0, 0, 0); 5937 tgt->link_reinit_iocb_pending = 0; 5938 } 5939 break; 5940 } 5941 5942 case MBA_LIP_OCCURRED: 5943 case MBA_LOOP_DOWN: 5944 case MBA_LIP_RESET: 5945 case MBA_RSCN_UPDATE: 5946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5947 "qla_target(%d): Async event %#x occurred " 5948 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5949 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5950 break; 5951 5952 case MBA_REJECTED_FCP_CMD: 5953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5954 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5955 vha->vp_idx, 5956 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5957 5958 if (mailbox[3] == 1) { 5959 /* exchange starvation. */ 5960 vha->hw->exch_starvation++; 5961 if (vha->hw->exch_starvation > 5) { 5962 ql_log(ql_log_warn, vha, 0xd03a, 5963 "Exchange starvation-. Resetting RISC\n"); 5964 5965 vha->hw->exch_starvation = 0; 5966 if (IS_P3P_TYPE(vha->hw)) 5967 set_bit(FCOE_CTX_RESET_NEEDED, 5968 &vha->dpc_flags); 5969 else 5970 set_bit(ISP_ABORT_NEEDED, 5971 &vha->dpc_flags); 5972 qla2xxx_wake_dpc(vha); 5973 } 5974 } 5975 break; 5976 5977 case MBA_PORT_UPDATE: 5978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5979 "qla_target(%d): Port update async event %#x " 5980 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5981 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5982 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 5983 5984 login_code = mailbox[2]; 5985 if (login_code == 0x4) { 5986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5987 "Async MB 2: Got PLOGI Complete\n"); 5988 vha->hw->exch_starvation = 0; 5989 } else if (login_code == 0x7) 5990 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5991 "Async MB 2: Port Logged Out\n"); 5992 break; 5993 default: 5994 break; 5995 } 5996 5997 } 5998 5999 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6000 uint16_t loop_id) 6001 { 6002 fc_port_t *fcport, *tfcp, *del; 6003 int rc; 6004 unsigned long flags; 6005 u8 newfcport = 0; 6006 6007 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6008 if (!fcport) { 6009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6010 "qla_target(%d): Allocation of tmp FC port failed", 6011 vha->vp_idx); 6012 return NULL; 6013 } 6014 6015 fcport->loop_id = loop_id; 6016 6017 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6018 if (rc != QLA_SUCCESS) { 6019 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6020 "qla_target(%d): Failed to retrieve fcport " 6021 "information -- get_port_database() returned %x " 6022 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6023 kfree(fcport); 6024 return NULL; 6025 } 6026 6027 del = NULL; 6028 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6029 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6030 6031 if (tfcp) { 6032 tfcp->d_id = fcport->d_id; 6033 tfcp->port_type = fcport->port_type; 6034 tfcp->supported_classes = fcport->supported_classes; 6035 tfcp->flags |= fcport->flags; 6036 tfcp->scan_state = QLA_FCPORT_FOUND; 6037 6038 del = fcport; 6039 fcport = tfcp; 6040 } else { 6041 if (vha->hw->current_topology == ISP_CFG_F) 6042 fcport->flags |= FCF_FABRIC_DEVICE; 6043 6044 list_add_tail(&fcport->list, &vha->vp_fcports); 6045 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6046 vha->fcport_count++; 6047 fcport->login_gen++; 6048 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6049 fcport->login_succ = 1; 6050 newfcport = 1; 6051 } 6052 6053 fcport->deleted = 0; 6054 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6055 6056 switch (vha->host->active_mode) { 6057 case MODE_INITIATOR: 6058 case MODE_DUAL: 6059 if (newfcport) { 6060 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6061 qla24xx_sched_upd_fcport(fcport); 6062 } else { 6063 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6064 "%s %d %8phC post gpsc fcp_cnt %d\n", 6065 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6066 qla24xx_post_gpsc_work(vha, fcport); 6067 } 6068 } 6069 break; 6070 6071 case MODE_TARGET: 6072 default: 6073 break; 6074 } 6075 if (del) 6076 qla2x00_free_fcport(del); 6077 6078 return fcport; 6079 } 6080 6081 /* Must be called under tgt_mutex */ 6082 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6083 be_id_t s_id) 6084 { 6085 struct fc_port *sess = NULL; 6086 fc_port_t *fcport = NULL; 6087 int rc, global_resets; 6088 uint16_t loop_id = 0; 6089 6090 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6091 /* 6092 * This is Domain Controller, so it should be 6093 * OK to drop SCSI commands from it. 6094 */ 6095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6096 "Unable to find initiator with S_ID %x:%x:%x", 6097 s_id.domain, s_id.area, s_id.al_pa); 6098 return NULL; 6099 } 6100 6101 mutex_lock(&vha->vha_tgt.tgt_mutex); 6102 6103 retry: 6104 global_resets = 6105 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6106 6107 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6108 if (rc != 0) { 6109 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6110 6111 ql_log(ql_log_info, vha, 0xf071, 6112 "qla_target(%d): Unable to find " 6113 "initiator with S_ID %x:%x:%x", 6114 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6115 6116 if (rc == -ENOENT) { 6117 qlt_port_logo_t logo; 6118 6119 logo.id = be_to_port_id(s_id); 6120 logo.cmd_count = 1; 6121 qlt_send_first_logo(vha, &logo); 6122 } 6123 6124 return NULL; 6125 } 6126 6127 fcport = qlt_get_port_database(vha, loop_id); 6128 if (!fcport) { 6129 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6130 return NULL; 6131 } 6132 6133 if (global_resets != 6134 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6136 "qla_target(%d): global reset during session discovery " 6137 "(counter was %d, new %d), retrying", vha->vp_idx, 6138 global_resets, 6139 atomic_read(&vha->vha_tgt. 6140 qla_tgt->tgt_global_resets_count)); 6141 goto retry; 6142 } 6143 6144 sess = qlt_create_sess(vha, fcport, true); 6145 6146 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6147 6148 return sess; 6149 } 6150 6151 static void qlt_abort_work(struct qla_tgt *tgt, 6152 struct qla_tgt_sess_work_param *prm) 6153 { 6154 struct scsi_qla_host *vha = tgt->vha; 6155 struct qla_hw_data *ha = vha->hw; 6156 struct fc_port *sess = NULL; 6157 unsigned long flags = 0, flags2 = 0; 6158 be_id_t s_id; 6159 int rc; 6160 6161 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6162 6163 if (tgt->tgt_stop) 6164 goto out_term2; 6165 6166 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6167 6168 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6169 if (!sess) { 6170 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6171 6172 sess = qlt_make_local_sess(vha, s_id); 6173 /* sess has got an extra creation ref */ 6174 6175 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6176 if (!sess) 6177 goto out_term2; 6178 } else { 6179 if (sess->deleted) { 6180 sess = NULL; 6181 goto out_term2; 6182 } 6183 6184 if (!kref_get_unless_zero(&sess->sess_kref)) { 6185 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6186 "%s: kref_get fail %8phC \n", 6187 __func__, sess->port_name); 6188 sess = NULL; 6189 goto out_term2; 6190 } 6191 } 6192 6193 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6194 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6195 6196 ha->tgt.tgt_ops->put_sess(sess); 6197 6198 if (rc != 0) 6199 goto out_term; 6200 return; 6201 6202 out_term2: 6203 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6204 6205 out_term: 6206 spin_lock_irqsave(&ha->hardware_lock, flags); 6207 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6208 FCP_TMF_REJECTED, false); 6209 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6210 } 6211 6212 static void qlt_sess_work_fn(struct work_struct *work) 6213 { 6214 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6215 struct scsi_qla_host *vha = tgt->vha; 6216 unsigned long flags; 6217 6218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6219 6220 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6221 while (!list_empty(&tgt->sess_works_list)) { 6222 struct qla_tgt_sess_work_param *prm = list_entry( 6223 tgt->sess_works_list.next, typeof(*prm), 6224 sess_works_list_entry); 6225 6226 /* 6227 * This work can be scheduled on several CPUs at time, so we 6228 * must delete the entry to eliminate double processing 6229 */ 6230 list_del(&prm->sess_works_list_entry); 6231 6232 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6233 6234 switch (prm->type) { 6235 case QLA_TGT_SESS_WORK_ABORT: 6236 qlt_abort_work(tgt, prm); 6237 break; 6238 default: 6239 BUG_ON(1); 6240 break; 6241 } 6242 6243 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6244 6245 kfree(prm); 6246 } 6247 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6248 } 6249 6250 /* Must be called under tgt_host_action_mutex */ 6251 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6252 { 6253 struct qla_tgt *tgt; 6254 int rc, i; 6255 struct qla_qpair_hint *h; 6256 6257 if (!QLA_TGT_MODE_ENABLED()) 6258 return 0; 6259 6260 if (!IS_TGT_MODE_CAPABLE(ha)) { 6261 ql_log(ql_log_warn, base_vha, 0xe070, 6262 "This adapter does not support target mode.\n"); 6263 return 0; 6264 } 6265 6266 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6267 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6268 6269 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6270 6271 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6272 if (!tgt) { 6273 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6274 "Unable to allocate struct qla_tgt\n"); 6275 return -ENOMEM; 6276 } 6277 6278 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6279 sizeof(struct qla_qpair_hint), 6280 GFP_KERNEL); 6281 if (!tgt->qphints) { 6282 kfree(tgt); 6283 ql_log(ql_log_warn, base_vha, 0x0197, 6284 "Unable to allocate qpair hints.\n"); 6285 return -ENOMEM; 6286 } 6287 6288 qla2xxx_driver_template.supported_mode |= MODE_TARGET; 6289 6290 rc = btree_init64(&tgt->lun_qpair_map); 6291 if (rc) { 6292 kfree(tgt->qphints); 6293 kfree(tgt); 6294 ql_log(ql_log_info, base_vha, 0x0198, 6295 "Unable to initialize lun_qpair_map btree\n"); 6296 return -EIO; 6297 } 6298 h = &tgt->qphints[0]; 6299 h->qpair = ha->base_qpair; 6300 INIT_LIST_HEAD(&h->hint_elem); 6301 h->cpuid = ha->base_qpair->cpuid; 6302 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6303 6304 for (i = 0; i < ha->max_qpairs; i++) { 6305 unsigned long flags; 6306 6307 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6308 6309 h = &tgt->qphints[i + 1]; 6310 INIT_LIST_HEAD(&h->hint_elem); 6311 if (qpair) { 6312 h->qpair = qpair; 6313 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6314 list_add_tail(&h->hint_elem, &qpair->hints_list); 6315 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6316 h->cpuid = qpair->cpuid; 6317 } 6318 } 6319 6320 tgt->ha = ha; 6321 tgt->vha = base_vha; 6322 init_waitqueue_head(&tgt->waitQ); 6323 spin_lock_init(&tgt->sess_work_lock); 6324 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6325 INIT_LIST_HEAD(&tgt->sess_works_list); 6326 atomic_set(&tgt->tgt_global_resets_count, 0); 6327 6328 base_vha->vha_tgt.qla_tgt = tgt; 6329 6330 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6331 "qla_target(%d): using 64 Bit PCI addressing", 6332 base_vha->vp_idx); 6333 /* 3 is reserved */ 6334 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6335 6336 mutex_lock(&qla_tgt_mutex); 6337 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6338 mutex_unlock(&qla_tgt_mutex); 6339 6340 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6341 ha->tgt.tgt_ops->add_target(base_vha); 6342 6343 return 0; 6344 } 6345 6346 /* Must be called under tgt_host_action_mutex */ 6347 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6348 { 6349 if (!vha->vha_tgt.qla_tgt) 6350 return 0; 6351 6352 if (vha->fc_vport) { 6353 qlt_release(vha->vha_tgt.qla_tgt); 6354 return 0; 6355 } 6356 6357 /* free left over qfull cmds */ 6358 qlt_init_term_exchange(vha); 6359 6360 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6361 vha->host_no, ha); 6362 qlt_release(vha->vha_tgt.qla_tgt); 6363 6364 return 0; 6365 } 6366 6367 void qla_remove_hostmap(struct qla_hw_data *ha) 6368 { 6369 struct scsi_qla_host *node; 6370 u32 key = 0; 6371 6372 btree_for_each_safe32(&ha->host_map, key, node) 6373 btree_remove32(&ha->host_map, key); 6374 6375 btree_destroy32(&ha->host_map); 6376 } 6377 6378 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6379 unsigned char *b) 6380 { 6381 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6382 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6383 put_unaligned_be64(wwpn, b); 6384 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6385 } 6386 6387 /** 6388 * qlt_lport_register - register lport with external module 6389 * 6390 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6391 * @phys_wwpn: physical port WWPN 6392 * @npiv_wwpn: NPIV WWPN 6393 * @npiv_wwnn: NPIV WWNN 6394 * @callback: lport initialization callback for tcm_qla2xxx code 6395 */ 6396 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6397 u64 npiv_wwpn, u64 npiv_wwnn, 6398 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6399 { 6400 struct qla_tgt *tgt; 6401 struct scsi_qla_host *vha; 6402 struct qla_hw_data *ha; 6403 struct Scsi_Host *host; 6404 unsigned long flags; 6405 int rc; 6406 u8 b[WWN_SIZE]; 6407 6408 mutex_lock(&qla_tgt_mutex); 6409 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6410 vha = tgt->vha; 6411 ha = vha->hw; 6412 6413 host = vha->host; 6414 if (!host) 6415 continue; 6416 6417 if (!(host->hostt->supported_mode & MODE_TARGET)) 6418 continue; 6419 6420 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6421 continue; 6422 6423 spin_lock_irqsave(&ha->hardware_lock, flags); 6424 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6425 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6426 host->host_no); 6427 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6428 continue; 6429 } 6430 if (tgt->tgt_stop) { 6431 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6432 host->host_no); 6433 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6434 continue; 6435 } 6436 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6437 6438 if (!scsi_host_get(host)) { 6439 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6440 "Unable to scsi_host_get() for" 6441 " qla2xxx scsi_host\n"); 6442 continue; 6443 } 6444 qlt_lport_dump(vha, phys_wwpn, b); 6445 6446 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6447 scsi_host_put(host); 6448 continue; 6449 } 6450 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6451 if (rc != 0) 6452 scsi_host_put(host); 6453 6454 mutex_unlock(&qla_tgt_mutex); 6455 return rc; 6456 } 6457 mutex_unlock(&qla_tgt_mutex); 6458 6459 return -ENODEV; 6460 } 6461 EXPORT_SYMBOL(qlt_lport_register); 6462 6463 /** 6464 * qlt_lport_deregister - Degister lport 6465 * 6466 * @vha: Registered scsi_qla_host pointer 6467 */ 6468 void qlt_lport_deregister(struct scsi_qla_host *vha) 6469 { 6470 struct qla_hw_data *ha = vha->hw; 6471 struct Scsi_Host *sh = vha->host; 6472 /* 6473 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6474 */ 6475 vha->vha_tgt.target_lport_ptr = NULL; 6476 ha->tgt.tgt_ops = NULL; 6477 /* 6478 * Release the Scsi_Host reference for the underlying qla2xxx host 6479 */ 6480 scsi_host_put(sh); 6481 } 6482 EXPORT_SYMBOL(qlt_lport_deregister); 6483 6484 /* Must be called under HW lock */ 6485 void qlt_set_mode(struct scsi_qla_host *vha) 6486 { 6487 switch (vha->qlini_mode) { 6488 case QLA2XXX_INI_MODE_DISABLED: 6489 case QLA2XXX_INI_MODE_EXCLUSIVE: 6490 vha->host->active_mode = MODE_TARGET; 6491 break; 6492 case QLA2XXX_INI_MODE_ENABLED: 6493 vha->host->active_mode = MODE_INITIATOR; 6494 break; 6495 case QLA2XXX_INI_MODE_DUAL: 6496 vha->host->active_mode = MODE_DUAL; 6497 break; 6498 default: 6499 break; 6500 } 6501 } 6502 6503 /* Must be called under HW lock */ 6504 static void qlt_clear_mode(struct scsi_qla_host *vha) 6505 { 6506 switch (vha->qlini_mode) { 6507 case QLA2XXX_INI_MODE_DISABLED: 6508 vha->host->active_mode = MODE_UNKNOWN; 6509 break; 6510 case QLA2XXX_INI_MODE_EXCLUSIVE: 6511 vha->host->active_mode = MODE_INITIATOR; 6512 break; 6513 case QLA2XXX_INI_MODE_ENABLED: 6514 case QLA2XXX_INI_MODE_DUAL: 6515 vha->host->active_mode = MODE_INITIATOR; 6516 break; 6517 default: 6518 break; 6519 } 6520 } 6521 6522 /* 6523 * qla_tgt_enable_vha - NO LOCK HELD 6524 * 6525 * host_reset, bring up w/ Target Mode Enabled 6526 */ 6527 void 6528 qlt_enable_vha(struct scsi_qla_host *vha) 6529 { 6530 struct qla_hw_data *ha = vha->hw; 6531 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6532 unsigned long flags; 6533 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6534 6535 if (!tgt) { 6536 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6537 "Unable to locate qla_tgt pointer from" 6538 " struct qla_hw_data\n"); 6539 dump_stack(); 6540 return; 6541 } 6542 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6543 return; 6544 6545 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6546 ha->tgt.num_act_qpairs = ha->max_qpairs; 6547 spin_lock_irqsave(&ha->hardware_lock, flags); 6548 tgt->tgt_stopped = 0; 6549 qlt_set_mode(vha); 6550 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6551 6552 mutex_lock(&ha->optrom_mutex); 6553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6554 "%s.\n", __func__); 6555 if (vha->vp_idx) { 6556 qla24xx_disable_vp(vha); 6557 qla24xx_enable_vp(vha); 6558 } else { 6559 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6560 qla2xxx_wake_dpc(base_vha); 6561 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6562 QLA_SUCCESS); 6563 } 6564 mutex_unlock(&ha->optrom_mutex); 6565 } 6566 EXPORT_SYMBOL(qlt_enable_vha); 6567 6568 /* 6569 * qla_tgt_disable_vha - NO LOCK HELD 6570 * 6571 * Disable Target Mode and reset the adapter 6572 */ 6573 static void qlt_disable_vha(struct scsi_qla_host *vha) 6574 { 6575 struct qla_hw_data *ha = vha->hw; 6576 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6577 unsigned long flags; 6578 6579 if (!tgt) { 6580 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6581 "Unable to locate qla_tgt pointer from" 6582 " struct qla_hw_data\n"); 6583 dump_stack(); 6584 return; 6585 } 6586 6587 spin_lock_irqsave(&ha->hardware_lock, flags); 6588 qlt_clear_mode(vha); 6589 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6590 6591 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6592 qla2xxx_wake_dpc(vha); 6593 6594 /* 6595 * We are expecting the offline state. 6596 * QLA_FUNCTION_FAILED means that adapter is offline. 6597 */ 6598 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6599 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6600 "adapter is offline\n"); 6601 } 6602 6603 /* 6604 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6605 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6606 * members. 6607 */ 6608 void 6609 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6610 { 6611 vha->vha_tgt.qla_tgt = NULL; 6612 6613 mutex_init(&vha->vha_tgt.tgt_mutex); 6614 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6615 6616 INIT_LIST_HEAD(&vha->unknown_atio_list); 6617 INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn); 6618 6619 qlt_clear_mode(vha); 6620 6621 /* 6622 * NOTE: Currently the value is kept the same for <24xx and 6623 * >=24xx ISPs. If it is necessary to change it, 6624 * the check should be added for specific ISPs, 6625 * assigning the value appropriately. 6626 */ 6627 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6628 6629 qlt_add_target(ha, vha); 6630 } 6631 6632 u8 6633 qlt_rff_id(struct scsi_qla_host *vha) 6634 { 6635 u8 fc4_feature = 0; 6636 /* 6637 * FC-4 Feature bit 0 indicates target functionality to the name server. 6638 */ 6639 if (qla_tgt_mode_enabled(vha)) { 6640 fc4_feature = BIT_0; 6641 } else if (qla_ini_mode_enabled(vha)) { 6642 fc4_feature = BIT_1; 6643 } else if (qla_dual_mode_enabled(vha)) 6644 fc4_feature = BIT_0 | BIT_1; 6645 6646 return fc4_feature; 6647 } 6648 6649 /* 6650 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6651 * @ha: HA context 6652 * 6653 * Beginning of ATIO ring has initialization control block already built 6654 * by nvram config routine. 6655 * 6656 * Returns 0 on success. 6657 */ 6658 void 6659 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6660 { 6661 struct qla_hw_data *ha = vha->hw; 6662 uint16_t cnt; 6663 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6664 6665 if (qla_ini_mode_enabled(vha)) 6666 return; 6667 6668 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6669 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6670 pkt++; 6671 } 6672 6673 } 6674 6675 /* 6676 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6677 * @ha: SCSI driver HA context 6678 */ 6679 void 6680 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6681 { 6682 struct qla_hw_data *ha = vha->hw; 6683 struct atio_from_isp *pkt; 6684 int cnt, i; 6685 6686 if (!ha->flags.fw_started) 6687 return; 6688 6689 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6690 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6691 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6692 cnt = pkt->u.raw.entry_count; 6693 6694 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6695 /* 6696 * This packet is corrupted. The header + payload 6697 * can not be trusted. There is no point in passing 6698 * it further up. 6699 */ 6700 ql_log(ql_log_warn, vha, 0xd03c, 6701 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6702 &pkt->u.isp24.fcp_hdr.s_id, 6703 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6704 pkt->u.isp24.exchange_addr, pkt); 6705 6706 adjust_corrupted_atio(pkt); 6707 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6708 ha_locked, 0); 6709 } else { 6710 qlt_24xx_atio_pkt_all_vps(vha, 6711 (struct atio_from_isp *)pkt, ha_locked); 6712 } 6713 6714 for (i = 0; i < cnt; i++) { 6715 ha->tgt.atio_ring_index++; 6716 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6717 ha->tgt.atio_ring_index = 0; 6718 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6719 } else 6720 ha->tgt.atio_ring_ptr++; 6721 6722 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6723 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6724 } 6725 wmb(); 6726 } 6727 6728 /* Adjust ring index */ 6729 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6730 } 6731 6732 void 6733 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6734 { 6735 struct qla_hw_data *ha = vha->hw; 6736 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6737 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6738 6739 if (!QLA_TGT_MODE_ENABLED()) 6740 return; 6741 6742 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6743 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6744 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6745 6746 if (ha->flags.msix_enabled) { 6747 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6748 icb->msix_atio = cpu_to_le16(msix->entry); 6749 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6750 ql_dbg(ql_dbg_init, vha, 0xf072, 6751 "Registering ICB vector 0x%x for atio que.\n", 6752 msix->entry); 6753 } 6754 } else { 6755 /* INTx|MSI */ 6756 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6757 icb->msix_atio = 0; 6758 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6759 ql_dbg(ql_dbg_init, vha, 0xf072, 6760 "%s: Use INTx for ATIOQ.\n", __func__); 6761 } 6762 } 6763 } 6764 6765 void 6766 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6767 { 6768 struct qla_hw_data *ha = vha->hw; 6769 u32 tmp; 6770 6771 if (!QLA_TGT_MODE_ENABLED()) 6772 return; 6773 6774 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6775 if (!ha->tgt.saved_set) { 6776 /* We save only once */ 6777 ha->tgt.saved_exchange_count = nv->exchange_count; 6778 ha->tgt.saved_firmware_options_1 = 6779 nv->firmware_options_1; 6780 ha->tgt.saved_firmware_options_2 = 6781 nv->firmware_options_2; 6782 ha->tgt.saved_firmware_options_3 = 6783 nv->firmware_options_3; 6784 ha->tgt.saved_set = 1; 6785 } 6786 6787 if (qla_tgt_mode_enabled(vha)) 6788 nv->exchange_count = cpu_to_le16(0xFFFF); 6789 else /* dual */ 6790 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6791 6792 /* Enable target mode */ 6793 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6794 6795 /* Disable ini mode, if requested */ 6796 if (qla_tgt_mode_enabled(vha)) 6797 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6798 6799 /* Disable Full Login after LIP */ 6800 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6801 /* Enable initial LIP */ 6802 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6803 if (ql2xtgt_tape_enable) 6804 /* Enable FC Tape support */ 6805 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6806 else 6807 /* Disable FC Tape support */ 6808 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6809 6810 /* Disable Full Login after LIP */ 6811 nv->host_p &= cpu_to_le32(~BIT_10); 6812 6813 /* 6814 * clear BIT 15 explicitly as we have seen at least 6815 * a couple of instances where this was set and this 6816 * was causing the firmware to not be initialized. 6817 */ 6818 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6819 /* Enable target PRLI control */ 6820 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6821 6822 if (IS_QLA25XX(ha)) { 6823 /* Change Loop-prefer to Pt-Pt */ 6824 tmp = ~(BIT_4|BIT_5|BIT_6); 6825 nv->firmware_options_2 &= cpu_to_le32(tmp); 6826 tmp = P2P << 4; 6827 nv->firmware_options_2 |= cpu_to_le32(tmp); 6828 } 6829 } else { 6830 if (ha->tgt.saved_set) { 6831 nv->exchange_count = ha->tgt.saved_exchange_count; 6832 nv->firmware_options_1 = 6833 ha->tgt.saved_firmware_options_1; 6834 nv->firmware_options_2 = 6835 ha->tgt.saved_firmware_options_2; 6836 nv->firmware_options_3 = 6837 ha->tgt.saved_firmware_options_3; 6838 } 6839 return; 6840 } 6841 6842 if (ha->base_qpair->enable_class_2) { 6843 if (vha->flags.init_done) 6844 fc_host_supported_classes(vha->host) = 6845 FC_COS_CLASS2 | FC_COS_CLASS3; 6846 6847 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6848 } else { 6849 if (vha->flags.init_done) 6850 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6851 6852 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6853 } 6854 } 6855 6856 void 6857 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6858 struct init_cb_24xx *icb) 6859 { 6860 struct qla_hw_data *ha = vha->hw; 6861 6862 if (!QLA_TGT_MODE_ENABLED()) 6863 return; 6864 6865 if (ha->tgt.node_name_set) { 6866 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6867 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6868 } 6869 } 6870 6871 void 6872 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6873 { 6874 struct qla_hw_data *ha = vha->hw; 6875 u32 tmp; 6876 6877 if (!QLA_TGT_MODE_ENABLED()) 6878 return; 6879 6880 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6881 if (!ha->tgt.saved_set) { 6882 /* We save only once */ 6883 ha->tgt.saved_exchange_count = nv->exchange_count; 6884 ha->tgt.saved_firmware_options_1 = 6885 nv->firmware_options_1; 6886 ha->tgt.saved_firmware_options_2 = 6887 nv->firmware_options_2; 6888 ha->tgt.saved_firmware_options_3 = 6889 nv->firmware_options_3; 6890 ha->tgt.saved_set = 1; 6891 } 6892 6893 if (qla_tgt_mode_enabled(vha)) 6894 nv->exchange_count = cpu_to_le16(0xFFFF); 6895 else /* dual */ 6896 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6897 6898 /* Enable target mode */ 6899 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6900 6901 /* Disable ini mode, if requested */ 6902 if (qla_tgt_mode_enabled(vha)) 6903 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6904 /* Disable Full Login after LIP */ 6905 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6906 /* Enable initial LIP */ 6907 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6908 /* 6909 * clear BIT 15 explicitly as we have seen at 6910 * least a couple of instances where this was set 6911 * and this was causing the firmware to not be 6912 * initialized. 6913 */ 6914 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6915 if (ql2xtgt_tape_enable) 6916 /* Enable FC tape support */ 6917 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6918 else 6919 /* Disable FC tape support */ 6920 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6921 6922 /* Disable Full Login after LIP */ 6923 nv->host_p &= cpu_to_le32(~BIT_10); 6924 /* Enable target PRLI control */ 6925 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6926 6927 /* Change Loop-prefer to Pt-Pt */ 6928 tmp = ~(BIT_4|BIT_5|BIT_6); 6929 nv->firmware_options_2 &= cpu_to_le32(tmp); 6930 tmp = P2P << 4; 6931 nv->firmware_options_2 |= cpu_to_le32(tmp); 6932 } else { 6933 if (ha->tgt.saved_set) { 6934 nv->exchange_count = ha->tgt.saved_exchange_count; 6935 nv->firmware_options_1 = 6936 ha->tgt.saved_firmware_options_1; 6937 nv->firmware_options_2 = 6938 ha->tgt.saved_firmware_options_2; 6939 nv->firmware_options_3 = 6940 ha->tgt.saved_firmware_options_3; 6941 } 6942 return; 6943 } 6944 6945 if (ha->base_qpair->enable_class_2) { 6946 if (vha->flags.init_done) 6947 fc_host_supported_classes(vha->host) = 6948 FC_COS_CLASS2 | FC_COS_CLASS3; 6949 6950 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6951 } else { 6952 if (vha->flags.init_done) 6953 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6954 6955 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6956 } 6957 } 6958 6959 void 6960 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6961 struct init_cb_81xx *icb) 6962 { 6963 struct qla_hw_data *ha = vha->hw; 6964 6965 if (!QLA_TGT_MODE_ENABLED()) 6966 return; 6967 6968 if (ha->tgt.node_name_set) { 6969 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6970 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6971 } 6972 } 6973 6974 void 6975 qlt_modify_vp_config(struct scsi_qla_host *vha, 6976 struct vp_config_entry_24xx *vpmod) 6977 { 6978 /* enable target mode. Bit5 = 1 => disable */ 6979 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 6980 vpmod->options_idx1 &= ~BIT_5; 6981 6982 /* Disable ini mode, if requested. bit4 = 1 => disable */ 6983 if (qla_tgt_mode_enabled(vha)) 6984 vpmod->options_idx1 &= ~BIT_4; 6985 } 6986 6987 void 6988 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6989 { 6990 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6991 if (!QLA_TGT_MODE_ENABLED()) 6992 return; 6993 6994 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6995 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6996 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6997 } else { 6998 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6999 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7000 } 7001 7002 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7003 7004 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7005 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7006 qlt_unknown_atio_work_fn); 7007 7008 qlt_clear_mode(base_vha); 7009 7010 qla_update_vp_map(base_vha, SET_VP_IDX); 7011 } 7012 7013 irqreturn_t 7014 qla83xx_msix_atio_q(int irq, void *dev_id) 7015 { 7016 struct rsp_que *rsp; 7017 scsi_qla_host_t *vha; 7018 struct qla_hw_data *ha; 7019 unsigned long flags; 7020 7021 rsp = (struct rsp_que *) dev_id; 7022 ha = rsp->hw; 7023 vha = pci_get_drvdata(ha->pdev); 7024 7025 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7026 7027 qlt_24xx_process_atio_queue(vha, 0); 7028 7029 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7030 7031 return IRQ_HANDLED; 7032 } 7033 7034 static void 7035 qlt_handle_abts_recv_work(struct work_struct *work) 7036 { 7037 struct qla_tgt_sess_op *op = container_of(work, 7038 struct qla_tgt_sess_op, work); 7039 scsi_qla_host_t *vha = op->vha; 7040 struct qla_hw_data *ha = vha->hw; 7041 unsigned long flags; 7042 7043 if (qla2x00_reset_active(vha) || 7044 (op->chip_reset != ha->base_qpair->chip_reset)) 7045 return; 7046 7047 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7048 qlt_24xx_process_atio_queue(vha, 0); 7049 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7050 7051 spin_lock_irqsave(&ha->hardware_lock, flags); 7052 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7053 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7054 7055 kfree(op); 7056 } 7057 7058 void 7059 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7060 response_t *pkt) 7061 { 7062 struct qla_tgt_sess_op *op; 7063 7064 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7065 7066 if (!op) { 7067 /* do not reach for ATIO queue here. This is best effort err 7068 * recovery at this point. 7069 */ 7070 qlt_response_pkt_all_vps(vha, rsp, pkt); 7071 return; 7072 } 7073 7074 memcpy(&op->atio, pkt, sizeof(*pkt)); 7075 op->vha = vha; 7076 op->chip_reset = vha->hw->base_qpair->chip_reset; 7077 op->rsp = rsp; 7078 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7079 queue_work(qla_tgt_wq, &op->work); 7080 return; 7081 } 7082 7083 int 7084 qlt_mem_alloc(struct qla_hw_data *ha) 7085 { 7086 if (!QLA_TGT_MODE_ENABLED()) 7087 return 0; 7088 7089 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7090 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7091 &ha->tgt.atio_dma, GFP_KERNEL); 7092 if (!ha->tgt.atio_ring) { 7093 return -ENOMEM; 7094 } 7095 return 0; 7096 } 7097 7098 void 7099 qlt_mem_free(struct qla_hw_data *ha) 7100 { 7101 if (!QLA_TGT_MODE_ENABLED()) 7102 return; 7103 7104 if (ha->tgt.atio_ring) { 7105 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7106 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7107 ha->tgt.atio_dma); 7108 } 7109 ha->tgt.atio_ring = NULL; 7110 ha->tgt.atio_dma = 0; 7111 } 7112 7113 static int __init qlt_parse_ini_mode(void) 7114 { 7115 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7116 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7117 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7118 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7119 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7120 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7121 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7122 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7123 else 7124 return false; 7125 7126 return true; 7127 } 7128 7129 int __init qlt_init(void) 7130 { 7131 int ret; 7132 7133 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7134 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7135 7136 if (!qlt_parse_ini_mode()) { 7137 ql_log(ql_log_fatal, NULL, 0xe06b, 7138 "qlt_parse_ini_mode() failed\n"); 7139 return -EINVAL; 7140 } 7141 7142 if (!QLA_TGT_MODE_ENABLED()) 7143 return 0; 7144 7145 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7146 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7147 qla_tgt_mgmt_cmd), 0, NULL); 7148 if (!qla_tgt_mgmt_cmd_cachep) { 7149 ql_log(ql_log_fatal, NULL, 0xd04b, 7150 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7151 return -ENOMEM; 7152 } 7153 7154 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7155 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7156 0, NULL); 7157 7158 if (!qla_tgt_plogi_cachep) { 7159 ql_log(ql_log_fatal, NULL, 0xe06d, 7160 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7161 ret = -ENOMEM; 7162 goto out_mgmt_cmd_cachep; 7163 } 7164 7165 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7166 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7167 if (!qla_tgt_mgmt_cmd_mempool) { 7168 ql_log(ql_log_fatal, NULL, 0xe06e, 7169 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7170 ret = -ENOMEM; 7171 goto out_plogi_cachep; 7172 } 7173 7174 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7175 if (!qla_tgt_wq) { 7176 ql_log(ql_log_fatal, NULL, 0xe06f, 7177 "alloc_workqueue for qla_tgt_wq failed\n"); 7178 ret = -ENOMEM; 7179 goto out_cmd_mempool; 7180 } 7181 /* 7182 * Return 1 to signal that initiator-mode is being disabled 7183 */ 7184 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7185 7186 out_cmd_mempool: 7187 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7188 out_plogi_cachep: 7189 kmem_cache_destroy(qla_tgt_plogi_cachep); 7190 out_mgmt_cmd_cachep: 7191 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7192 return ret; 7193 } 7194 7195 void qlt_exit(void) 7196 { 7197 if (!QLA_TGT_MODE_ENABLED()) 7198 return; 7199 7200 destroy_workqueue(qla_tgt_wq); 7201 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7202 kmem_cache_destroy(qla_tgt_plogi_cachep); 7203 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7204 } 7205