1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/blkdev.h> 21 #include <linux/interrupt.h> 22 #include <linux/pci.h> 23 #include <linux/delay.h> 24 #include <linux/list.h> 25 #include <linux/workqueue.h> 26 #include <asm/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 54 "For Dual Mode (qlini_mode=dual), this parameter determines " 55 "the percentage of exchanges/cmds FW will allocate resources " 56 "for Target mode."); 57 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum fcp_resp_rsp_codes { 74 FCP_TMF_CMPL = 0, 75 FCP_DATA_LEN_INVALID = 1, 76 FCP_CMND_FIELDS_INVALID = 2, 77 FCP_DATA_PARAM_MISMATCH = 3, 78 FCP_TMF_REJECTED = 4, 79 FCP_TMF_FAILED = 5, 80 FCP_TMF_INVALID_LUN = 9, 81 }; 82 83 /* 84 * fc_pri_ta from scsi/fc/fc_fcp.h 85 */ 86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 90 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 93 94 /* 95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 96 * must be called under HW lock and could unlock/lock it inside. 97 * It isn't an issue, since in the current implementation on the time when 98 * those functions are called: 99 * 100 * - Either context is IRQ and only IRQ handler can modify HW data, 101 * including rings related fields, 102 * 103 * - Or access to target mode variables from struct qla_tgt doesn't 104 * cross those functions boundaries, except tgt_stop, which 105 * additionally protected by irq_cmd_count. 106 */ 107 /* Predefs for callbacks handed to qla2xxx LLD */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static void qlt_send_notify_ack(struct qla_qpair *qpair, 121 struct imm_ntfy_from_isp *ntfy, 122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static const char *prot_op_str(u32 prot_op) 147 { 148 switch (prot_op) { 149 case TARGET_PROT_NORMAL: return "NORMAL"; 150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 154 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 156 default: return "UNKNOWN"; 157 } 158 } 159 160 /* This API intentionally takes dest as a parameter, rather than returning 161 * int value to avoid caller forgetting to issue wmb() after the store */ 162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 163 { 164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 165 *dest = atomic_inc_return(&base_vha->generation_tick); 166 /* memory barrier */ 167 wmb(); 168 } 169 170 /* Might release hw lock, then reaquire!! */ 171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 172 { 173 /* Send marker if required */ 174 if (unlikely(vha->marker_needed != 0)) { 175 int rc = qla2x00_issue_marker(vha, vha_locked); 176 177 if (rc != QLA_SUCCESS) { 178 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 179 "qla_target(%d): issue_marker() failed\n", 180 vha->vp_idx); 181 } 182 return rc; 183 } 184 return QLA_SUCCESS; 185 } 186 187 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, 188 be_id_t d_id) 189 { 190 struct scsi_qla_host *host; 191 uint32_t key; 192 193 if (vha->d_id.b.area == d_id.area && 194 vha->d_id.b.domain == d_id.domain && 195 vha->d_id.b.al_pa == d_id.al_pa) 196 return vha; 197 198 key = be_to_port_id(d_id).b24; 199 200 host = btree_lookup32(&vha->hw->host_map, key); 201 if (!host) 202 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 203 "Unable to find host %06x\n", key); 204 205 return host; 206 } 207 208 static inline 209 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 210 uint16_t vp_idx) 211 { 212 struct qla_hw_data *ha = vha->hw; 213 214 if (vha->vp_idx == vp_idx) 215 return vha; 216 217 BUG_ON(ha->tgt.tgt_vp_map == NULL); 218 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 219 return ha->tgt.tgt_vp_map[vp_idx].vha; 220 221 return NULL; 222 } 223 224 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 225 { 226 unsigned long flags; 227 228 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 229 230 vha->hw->tgt.num_pend_cmds++; 231 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 232 vha->qla_stats.stat_max_pend_cmds = 233 vha->hw->tgt.num_pend_cmds; 234 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 235 } 236 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 237 { 238 unsigned long flags; 239 240 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 241 vha->hw->tgt.num_pend_cmds--; 242 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 243 } 244 245 246 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 247 struct atio_from_isp *atio, uint8_t ha_locked) 248 { 249 struct qla_tgt_sess_op *u; 250 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 251 unsigned long flags; 252 253 if (tgt->tgt_stop) { 254 ql_dbg(ql_dbg_async, vha, 0x502c, 255 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 256 vha->vp_idx); 257 goto out_term; 258 } 259 260 u = kzalloc(sizeof(*u), GFP_ATOMIC); 261 if (u == NULL) 262 goto out_term; 263 264 u->vha = vha; 265 memcpy(&u->atio, atio, sizeof(*atio)); 266 INIT_LIST_HEAD(&u->cmd_list); 267 268 spin_lock_irqsave(&vha->cmd_list_lock, flags); 269 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 270 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 271 272 schedule_delayed_work(&vha->unknown_atio_work, 1); 273 274 out: 275 return; 276 277 out_term: 278 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 279 goto out; 280 } 281 282 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 283 uint8_t ha_locked) 284 { 285 struct qla_tgt_sess_op *u, *t; 286 scsi_qla_host_t *host; 287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 288 unsigned long flags; 289 uint8_t queued = 0; 290 291 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 292 if (u->aborted) { 293 ql_dbg(ql_dbg_async, vha, 0x502e, 294 "Freeing unknown %s %p, because of Abort\n", 295 "ATIO_TYPE7", u); 296 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 297 &u->atio, ha_locked, 0); 298 goto abort; 299 } 300 301 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 302 if (host != NULL) { 303 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 304 "Requeuing unknown ATIO_TYPE7 %p\n", u); 305 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 306 } else if (tgt->tgt_stop) { 307 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 308 "Freeing unknown %s %p, because tgt is being stopped\n", 309 "ATIO_TYPE7", u); 310 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 311 &u->atio, ha_locked, 0); 312 } else { 313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 314 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 315 if (!queued) { 316 queued = 1; 317 schedule_delayed_work(&vha->unknown_atio_work, 318 1); 319 } 320 continue; 321 } 322 323 abort: 324 spin_lock_irqsave(&vha->cmd_list_lock, flags); 325 list_del(&u->cmd_list); 326 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 327 kfree(u); 328 } 329 } 330 331 void qlt_unknown_atio_work_fn(struct work_struct *work) 332 { 333 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 334 struct scsi_qla_host, unknown_atio_work); 335 336 qlt_try_to_dequeue_unknown_atios(vha, 0); 337 } 338 339 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 340 struct atio_from_isp *atio, uint8_t ha_locked) 341 { 342 ql_dbg(ql_dbg_tgt, vha, 0xe072, 343 "%s: qla_target(%d): type %x ox_id %04x\n", 344 __func__, vha->vp_idx, atio->u.raw.entry_type, 345 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 346 347 switch (atio->u.raw.entry_type) { 348 case ATIO_TYPE7: 349 { 350 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 351 atio->u.isp24.fcp_hdr.d_id); 352 if (unlikely(NULL == host)) { 353 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 354 "qla_target(%d): Received ATIO_TYPE7 " 355 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 356 atio->u.isp24.fcp_hdr.d_id.domain, 357 atio->u.isp24.fcp_hdr.d_id.area, 358 atio->u.isp24.fcp_hdr.d_id.al_pa); 359 360 361 qlt_queue_unknown_atio(vha, atio, ha_locked); 362 break; 363 } 364 if (unlikely(!list_empty(&vha->unknown_atio_list))) 365 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 366 367 qlt_24xx_atio_pkt(host, atio, ha_locked); 368 break; 369 } 370 371 case IMMED_NOTIFY_TYPE: 372 { 373 struct scsi_qla_host *host = vha; 374 struct imm_ntfy_from_isp *entry = 375 (struct imm_ntfy_from_isp *)atio; 376 377 qlt_issue_marker(vha, ha_locked); 378 379 if ((entry->u.isp24.vp_index != 0xFF) && 380 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 381 host = qlt_find_host_by_vp_idx(vha, 382 entry->u.isp24.vp_index); 383 if (unlikely(!host)) { 384 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 385 "qla_target(%d): Received " 386 "ATIO (IMMED_NOTIFY_TYPE) " 387 "with unknown vp_index %d\n", 388 vha->vp_idx, entry->u.isp24.vp_index); 389 break; 390 } 391 } 392 qlt_24xx_atio_pkt(host, atio, ha_locked); 393 break; 394 } 395 396 case VP_RPT_ID_IOCB_TYPE: 397 qla24xx_report_id_acquisition(vha, 398 (struct vp_rpt_id_entry_24xx *)atio); 399 break; 400 401 case ABTS_RECV_24XX: 402 { 403 struct abts_recv_from_24xx *entry = 404 (struct abts_recv_from_24xx *)atio; 405 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 406 entry->vp_index); 407 unsigned long flags; 408 409 if (unlikely(!host)) { 410 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 411 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 412 "received, with unknown vp_index %d\n", 413 vha->vp_idx, entry->vp_index); 414 break; 415 } 416 if (!ha_locked) 417 spin_lock_irqsave(&host->hw->hardware_lock, flags); 418 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 419 if (!ha_locked) 420 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 421 break; 422 } 423 424 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 425 426 default: 427 ql_dbg(ql_dbg_tgt, vha, 0xe040, 428 "qla_target(%d): Received unknown ATIO atio " 429 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 430 break; 431 } 432 433 return false; 434 } 435 436 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 437 struct rsp_que *rsp, response_t *pkt) 438 { 439 switch (pkt->entry_type) { 440 case CTIO_CRC2: 441 ql_dbg(ql_dbg_tgt, vha, 0xe073, 442 "qla_target(%d):%s: CRC2 Response pkt\n", 443 vha->vp_idx, __func__); 444 fallthrough; 445 case CTIO_TYPE7: 446 { 447 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 448 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 449 entry->vp_index); 450 if (unlikely(!host)) { 451 ql_dbg(ql_dbg_tgt, vha, 0xe041, 452 "qla_target(%d): Response pkt (CTIO_TYPE7) " 453 "received, with unknown vp_index %d\n", 454 vha->vp_idx, entry->vp_index); 455 break; 456 } 457 qlt_response_pkt(host, rsp, pkt); 458 break; 459 } 460 461 case IMMED_NOTIFY_TYPE: 462 { 463 struct scsi_qla_host *host; 464 struct imm_ntfy_from_isp *entry = 465 (struct imm_ntfy_from_isp *)pkt; 466 467 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 468 if (unlikely(!host)) { 469 ql_dbg(ql_dbg_tgt, vha, 0xe042, 470 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 471 "received, with unknown vp_index %d\n", 472 vha->vp_idx, entry->u.isp24.vp_index); 473 break; 474 } 475 qlt_response_pkt(host, rsp, pkt); 476 break; 477 } 478 479 case NOTIFY_ACK_TYPE: 480 { 481 struct scsi_qla_host *host = vha; 482 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 483 484 if (0xFF != entry->u.isp24.vp_index) { 485 host = qlt_find_host_by_vp_idx(vha, 486 entry->u.isp24.vp_index); 487 if (unlikely(!host)) { 488 ql_dbg(ql_dbg_tgt, vha, 0xe043, 489 "qla_target(%d): Response " 490 "pkt (NOTIFY_ACK_TYPE) " 491 "received, with unknown " 492 "vp_index %d\n", vha->vp_idx, 493 entry->u.isp24.vp_index); 494 break; 495 } 496 } 497 qlt_response_pkt(host, rsp, pkt); 498 break; 499 } 500 501 case ABTS_RECV_24XX: 502 { 503 struct abts_recv_from_24xx *entry = 504 (struct abts_recv_from_24xx *)pkt; 505 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 506 entry->vp_index); 507 if (unlikely(!host)) { 508 ql_dbg(ql_dbg_tgt, vha, 0xe044, 509 "qla_target(%d): Response pkt " 510 "(ABTS_RECV_24XX) received, with unknown " 511 "vp_index %d\n", vha->vp_idx, entry->vp_index); 512 break; 513 } 514 qlt_response_pkt(host, rsp, pkt); 515 break; 516 } 517 518 case ABTS_RESP_24XX: 519 { 520 struct abts_resp_to_24xx *entry = 521 (struct abts_resp_to_24xx *)pkt; 522 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 523 entry->vp_index); 524 if (unlikely(!host)) { 525 ql_dbg(ql_dbg_tgt, vha, 0xe045, 526 "qla_target(%d): Response pkt " 527 "(ABTS_RECV_24XX) received, with unknown " 528 "vp_index %d\n", vha->vp_idx, entry->vp_index); 529 break; 530 } 531 qlt_response_pkt(host, rsp, pkt); 532 break; 533 } 534 default: 535 qlt_response_pkt(vha, rsp, pkt); 536 break; 537 } 538 539 } 540 541 /* 542 * All qlt_plogi_ack_t operations are protected by hardware_lock 543 */ 544 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 545 struct imm_ntfy_from_isp *ntfy, int type) 546 { 547 struct qla_work_evt *e; 548 549 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 550 if (!e) 551 return QLA_FUNCTION_FAILED; 552 553 e->u.nack.fcport = fcport; 554 e->u.nack.type = type; 555 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 556 return qla2x00_post_work(vha, e); 557 } 558 559 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 560 { 561 struct scsi_qla_host *vha = sp->vha; 562 unsigned long flags; 563 564 ql_dbg(ql_dbg_disc, vha, 0x20f2, 565 "Async done-%s res %x %8phC type %d\n", 566 sp->name, res, sp->fcport->port_name, sp->type); 567 568 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 569 sp->fcport->flags &= ~FCF_ASYNC_SENT; 570 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 571 572 switch (sp->type) { 573 case SRB_NACK_PLOGI: 574 sp->fcport->login_gen++; 575 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 576 sp->fcport->logout_on_delete = 1; 577 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 578 sp->fcport->send_els_logo = 0; 579 580 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 581 ql_dbg(ql_dbg_edif, vha, 0x20ef, 582 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 583 sp->fcport->port_name); 584 qla2x00_set_fcport_disc_state(sp->fcport, 585 DSC_LOGIN_AUTH_PEND); 586 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 587 sp->fcport->d_id.b24); 588 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 589 0, sp->fcport); 590 } 591 break; 592 593 case SRB_NACK_PRLI: 594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 595 sp->fcport->deleted = 0; 596 sp->fcport->send_els_logo = 0; 597 598 if (!sp->fcport->login_succ && 599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 600 sp->fcport->login_succ = 1; 601 602 vha->fcport_count++; 603 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 604 qla24xx_sched_upd_fcport(sp->fcport); 605 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 606 } else { 607 sp->fcport->login_retry = 0; 608 qla2x00_set_fcport_disc_state(sp->fcport, 609 DSC_LOGIN_COMPLETE); 610 sp->fcport->deleted = 0; 611 sp->fcport->logout_on_delete = 1; 612 } 613 break; 614 615 case SRB_NACK_LOGO: 616 sp->fcport->login_gen++; 617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 619 break; 620 } 621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 622 623 sp->free(sp); 624 } 625 626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 627 struct imm_ntfy_from_isp *ntfy, int type) 628 { 629 int rval = QLA_FUNCTION_FAILED; 630 srb_t *sp; 631 char *c = NULL; 632 633 fcport->flags |= FCF_ASYNC_SENT; 634 switch (type) { 635 case SRB_NACK_PLOGI: 636 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 637 c = "PLOGI"; 638 if (vha->hw->flags.edif_enabled && 639 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 640 fcport->flags |= FCF_FCSP_DEVICE; 641 } 642 break; 643 case SRB_NACK_PRLI: 644 fcport->fw_login_state = DSC_LS_PRLI_PEND; 645 fcport->deleted = 0; 646 c = "PRLI"; 647 break; 648 case SRB_NACK_LOGO: 649 fcport->fw_login_state = DSC_LS_LOGO_PEND; 650 c = "LOGO"; 651 break; 652 } 653 654 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 655 if (!sp) 656 goto done; 657 658 sp->type = type; 659 sp->name = "nack"; 660 661 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 662 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 663 664 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 665 sp->done = qla2x00_async_nack_sp_done; 666 667 ql_dbg(ql_dbg_disc, vha, 0x20f4, 668 "Async-%s %8phC hndl %x %s\n", 669 sp->name, fcport->port_name, sp->handle, c); 670 671 rval = qla2x00_start_sp(sp); 672 if (rval != QLA_SUCCESS) 673 goto done_free_sp; 674 675 return rval; 676 677 done_free_sp: 678 sp->free(sp); 679 done: 680 fcport->flags &= ~FCF_ASYNC_SENT; 681 return rval; 682 } 683 684 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 685 { 686 fc_port_t *t; 687 688 switch (e->u.nack.type) { 689 case SRB_NACK_PRLI: 690 t = e->u.nack.fcport; 691 flush_work(&t->del_work); 692 flush_work(&t->free_work); 693 mutex_lock(&vha->vha_tgt.tgt_mutex); 694 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 695 mutex_unlock(&vha->vha_tgt.tgt_mutex); 696 if (t) { 697 ql_log(ql_log_info, vha, 0xd034, 698 "%s create sess success %p", __func__, t); 699 /* create sess has an extra kref */ 700 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 701 } 702 break; 703 } 704 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 705 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 706 } 707 708 void qla24xx_delete_sess_fn(struct work_struct *work) 709 { 710 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 711 struct qla_hw_data *ha = NULL; 712 713 if (!fcport || !fcport->vha || !fcport->vha->hw) 714 return; 715 716 ha = fcport->vha->hw; 717 718 if (fcport->se_sess) { 719 ha->tgt.tgt_ops->shutdown_sess(fcport); 720 ha->tgt.tgt_ops->put_sess(fcport); 721 } else { 722 qlt_unreg_sess(fcport); 723 } 724 } 725 726 /* 727 * Called from qla2x00_reg_remote_port() 728 */ 729 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 730 { 731 struct qla_hw_data *ha = vha->hw; 732 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 733 struct fc_port *sess = fcport; 734 unsigned long flags; 735 736 if (!vha->hw->tgt.tgt_ops) 737 return; 738 739 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 740 if (tgt->tgt_stop) { 741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 742 return; 743 } 744 745 if (fcport->disc_state == DSC_DELETE_PEND) { 746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 747 return; 748 } 749 750 if (!sess->se_sess) { 751 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 752 753 mutex_lock(&vha->vha_tgt.tgt_mutex); 754 sess = qlt_create_sess(vha, fcport, false); 755 mutex_unlock(&vha->vha_tgt.tgt_mutex); 756 757 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 758 } else { 759 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 760 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 761 return; 762 } 763 764 if (!kref_get_unless_zero(&sess->sess_kref)) { 765 ql_dbg(ql_dbg_disc, vha, 0x2107, 766 "%s: kref_get fail sess %8phC \n", 767 __func__, sess->port_name); 768 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 769 return; 770 } 771 772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 773 "qla_target(%u): %ssession for port %8phC " 774 "(loop ID %d) reappeared\n", vha->vp_idx, 775 sess->local ? "local " : "", sess->port_name, sess->loop_id); 776 777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 778 "Reappeared sess %p\n", sess); 779 780 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 781 fcport->loop_id, 782 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 783 } 784 785 if (sess && sess->local) { 786 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 787 "qla_target(%u): local session for " 788 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 789 fcport->port_name, sess->loop_id); 790 sess->local = 0; 791 } 792 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 793 794 ha->tgt.tgt_ops->put_sess(sess); 795 } 796 797 /* 798 * This is a zero-base ref-counting solution, since hardware_lock 799 * guarantees that ref_count is not modified concurrently. 800 * Upon successful return content of iocb is undefined 801 */ 802 static struct qlt_plogi_ack_t * 803 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 804 struct imm_ntfy_from_isp *iocb) 805 { 806 struct qlt_plogi_ack_t *pla; 807 808 lockdep_assert_held(&vha->hw->hardware_lock); 809 810 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 811 if (pla->id.b24 == id->b24) { 812 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 813 "%s %d %8phC Term INOT due to new INOT", 814 __func__, __LINE__, 815 pla->iocb.u.isp24.port_name); 816 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 817 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 818 return pla; 819 } 820 } 821 822 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 823 if (!pla) { 824 ql_dbg(ql_dbg_async, vha, 0x5088, 825 "qla_target(%d): Allocation of plogi_ack failed\n", 826 vha->vp_idx); 827 return NULL; 828 } 829 830 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 831 pla->id = *id; 832 list_add_tail(&pla->list, &vha->plogi_ack_list); 833 834 return pla; 835 } 836 837 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 838 struct qlt_plogi_ack_t *pla) 839 { 840 struct imm_ntfy_from_isp *iocb = &pla->iocb; 841 port_id_t port_id; 842 uint16_t loop_id; 843 fc_port_t *fcport = pla->fcport; 844 845 BUG_ON(!pla->ref_count); 846 pla->ref_count--; 847 848 if (pla->ref_count) 849 return; 850 851 ql_dbg(ql_dbg_disc, vha, 0x5089, 852 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 853 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 854 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 855 iocb->u.isp24.port_id[0], 856 le16_to_cpu(iocb->u.isp24.nport_handle), 857 iocb->u.isp24.exchange_address, iocb->ox_id); 858 859 port_id.b.domain = iocb->u.isp24.port_id[2]; 860 port_id.b.area = iocb->u.isp24.port_id[1]; 861 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 862 port_id.b.rsvd_1 = 0; 863 864 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 865 866 fcport->loop_id = loop_id; 867 fcport->d_id = port_id; 868 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 869 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 870 else 871 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 872 873 list_for_each_entry(fcport, &vha->vp_fcports, list) { 874 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 875 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 876 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 877 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 878 } 879 880 list_del(&pla->list); 881 kmem_cache_free(qla_tgt_plogi_cachep, pla); 882 } 883 884 void 885 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 886 struct fc_port *sess, enum qlt_plogi_link_t link) 887 { 888 struct imm_ntfy_from_isp *iocb = &pla->iocb; 889 /* Inc ref_count first because link might already be pointing at pla */ 890 pla->ref_count++; 891 892 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 893 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 894 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 895 sess, link, sess->port_name, 896 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 897 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 898 pla->ref_count, pla, link); 899 900 if (link == QLT_PLOGI_LINK_CONFLICT) { 901 switch (sess->disc_state) { 902 case DSC_DELETED: 903 case DSC_DELETE_PEND: 904 pla->ref_count--; 905 return; 906 default: 907 break; 908 } 909 } 910 911 if (sess->plogi_link[link]) 912 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 913 914 if (link == QLT_PLOGI_LINK_SAME_WWN) 915 pla->fcport = sess; 916 917 sess->plogi_link[link] = pla; 918 } 919 920 typedef struct { 921 /* These fields must be initialized by the caller */ 922 port_id_t id; 923 /* 924 * number of cmds dropped while we were waiting for 925 * initiator to ack LOGO initialize to 1 if LOGO is 926 * triggered by a command, otherwise, to 0 927 */ 928 int cmd_count; 929 930 /* These fields are used by callee */ 931 struct list_head list; 932 } qlt_port_logo_t; 933 934 static void 935 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 936 { 937 qlt_port_logo_t *tmp; 938 int res; 939 940 mutex_lock(&vha->vha_tgt.tgt_mutex); 941 942 list_for_each_entry(tmp, &vha->logo_list, list) { 943 if (tmp->id.b24 == logo->id.b24) { 944 tmp->cmd_count += logo->cmd_count; 945 mutex_unlock(&vha->vha_tgt.tgt_mutex); 946 return; 947 } 948 } 949 950 list_add_tail(&logo->list, &vha->logo_list); 951 952 mutex_unlock(&vha->vha_tgt.tgt_mutex); 953 954 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 955 956 mutex_lock(&vha->vha_tgt.tgt_mutex); 957 list_del(&logo->list); 958 mutex_unlock(&vha->vha_tgt.tgt_mutex); 959 960 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 961 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 962 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 963 logo->cmd_count, res); 964 } 965 966 void qlt_free_session_done(struct work_struct *work) 967 { 968 struct fc_port *sess = container_of(work, struct fc_port, 969 free_work); 970 struct qla_tgt *tgt = sess->tgt; 971 struct scsi_qla_host *vha = sess->vha; 972 struct qla_hw_data *ha = vha->hw; 973 unsigned long flags; 974 bool logout_started = false; 975 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 976 struct qlt_plogi_ack_t *own = 977 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 978 979 ql_dbg(ql_dbg_disc, vha, 0xf084, 980 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 981 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 982 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 983 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 984 sess->logout_on_delete, sess->keep_nport_handle, 985 sess->send_els_logo); 986 987 if (!IS_SW_RESV_ADDR(sess->d_id)) { 988 if (ha->flags.edif_enabled && 989 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 990 if (!ha->flags.host_shutting_down) { 991 ql_dbg(ql_dbg_edif, vha, 0x911e, 992 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 993 __func__, sess->port_name); 994 qla2x00_release_all_sadb(vha, sess); 995 } else { 996 ql_dbg(ql_dbg_edif, vha, 0x911e, 997 "%s bypassing release_all_sadb\n", 998 __func__); 999 } 1000 } 1001 qla2x00_mark_device_lost(vha, sess, 0); 1002 1003 if (sess->send_els_logo) { 1004 qlt_port_logo_t logo; 1005 1006 logo.id = sess->d_id; 1007 logo.cmd_count = 0; 1008 INIT_LIST_HEAD(&logo.list); 1009 if (!own) 1010 qlt_send_first_logo(vha, &logo); 1011 sess->send_els_logo = 0; 1012 } 1013 1014 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 1015 int rc; 1016 1017 if (!own || 1018 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1019 sess->logout_completed = 0; 1020 rc = qla2x00_post_async_logout_work(vha, sess, 1021 NULL); 1022 if (rc != QLA_SUCCESS) 1023 ql_log(ql_log_warn, vha, 0xf085, 1024 "Schedule logo failed sess %p rc %d\n", 1025 sess, rc); 1026 else 1027 logout_started = true; 1028 } else if (own && (own->iocb.u.isp24.status_subcode == 1029 ELS_PRLI) && ha->flags.rida_fmt2) { 1030 rc = qla2x00_post_async_prlo_work(vha, sess, 1031 NULL); 1032 if (rc != QLA_SUCCESS) 1033 ql_log(ql_log_warn, vha, 0xf085, 1034 "Schedule PRLO failed sess %p rc %d\n", 1035 sess, rc); 1036 else 1037 logout_started = true; 1038 } 1039 } /* if sess->logout_on_delete */ 1040 1041 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1042 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1043 sess->nvme_flag |= NVME_FLAG_DELETING; 1044 qla_nvme_unregister_remote_port(sess); 1045 } 1046 } 1047 1048 /* 1049 * Release the target session for FC Nexus from fabric module code. 1050 */ 1051 if (sess->se_sess != NULL) 1052 ha->tgt.tgt_ops->free_session(sess); 1053 1054 if (logout_started) { 1055 bool traced = false; 1056 u16 cnt = 0; 1057 1058 while (!READ_ONCE(sess->logout_completed)) { 1059 if (!traced) { 1060 ql_dbg(ql_dbg_disc, vha, 0xf086, 1061 "%s: waiting for sess %p logout\n", 1062 __func__, sess); 1063 traced = true; 1064 } 1065 msleep(100); 1066 cnt++; 1067 /* 1068 * Driver timeout is set to 22 Sec, update count value to loop 1069 * long enough for log-out to complete before advancing. Otherwise, 1070 * straddling logout can interfere with re-login attempt. 1071 */ 1072 if (cnt > 230) 1073 break; 1074 } 1075 1076 ql_dbg(ql_dbg_disc, vha, 0xf087, 1077 "%s: sess %p logout completed\n", __func__, sess); 1078 } 1079 1080 if (sess->logo_ack_needed) { 1081 sess->logo_ack_needed = 0; 1082 qla24xx_async_notify_ack(vha, sess, 1083 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1084 } 1085 1086 spin_lock_irqsave(&vha->work_lock, flags); 1087 sess->flags &= ~FCF_ASYNC_SENT; 1088 spin_unlock_irqrestore(&vha->work_lock, flags); 1089 1090 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1091 if (sess->se_sess) { 1092 sess->se_sess = NULL; 1093 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1094 tgt->sess_count--; 1095 } 1096 1097 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1098 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1099 sess->deleted = QLA_SESS_DELETED; 1100 1101 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1102 vha->fcport_count--; 1103 sess->login_succ = 0; 1104 } 1105 1106 qla2x00_clear_loop_id(sess); 1107 1108 if (sess->conflict) { 1109 sess->conflict->login_pause = 0; 1110 sess->conflict = NULL; 1111 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1112 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1113 } 1114 1115 { 1116 struct qlt_plogi_ack_t *con = 1117 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1118 struct imm_ntfy_from_isp *iocb; 1119 1120 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1121 1122 if (con) { 1123 iocb = &con->iocb; 1124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1125 "se_sess %p / sess %p port %8phC is gone," 1126 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1127 sess->se_sess, sess, sess->port_name, 1128 own ? "releasing own PLOGI" : "no own PLOGI pending", 1129 own ? own->ref_count : -1, 1130 iocb->u.isp24.port_name, con->ref_count); 1131 qlt_plogi_ack_unref(vha, con); 1132 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1133 } else { 1134 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1135 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1136 sess->se_sess, sess, sess->port_name, 1137 own ? "releasing own PLOGI" : 1138 "no own PLOGI pending", 1139 own ? own->ref_count : -1); 1140 } 1141 1142 if (own) { 1143 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1144 qlt_plogi_ack_unref(vha, own); 1145 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1146 } 1147 } 1148 1149 sess->explicit_logout = 0; 1150 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1151 sess->free_pending = 0; 1152 1153 qla2x00_dfs_remove_rport(vha, sess); 1154 1155 ql_dbg(ql_dbg_disc, vha, 0xf001, 1156 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1157 sess, sess->port_name, vha->fcport_count); 1158 1159 if (tgt && (tgt->sess_count == 0)) 1160 wake_up_all(&tgt->waitQ); 1161 1162 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1163 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1164 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1165 switch (vha->host->active_mode) { 1166 case MODE_INITIATOR: 1167 case MODE_DUAL: 1168 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1169 qla2xxx_wake_dpc(vha); 1170 break; 1171 case MODE_TARGET: 1172 default: 1173 /* no-op */ 1174 break; 1175 } 1176 } 1177 1178 if (vha->fcport_count == 0) 1179 wake_up_all(&vha->fcport_waitQ); 1180 } 1181 1182 /* ha->tgt.sess_lock supposed to be held on entry */ 1183 void qlt_unreg_sess(struct fc_port *sess) 1184 { 1185 struct scsi_qla_host *vha = sess->vha; 1186 unsigned long flags; 1187 1188 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1189 "%s sess %p for deletion %8phC\n", 1190 __func__, sess, sess->port_name); 1191 1192 spin_lock_irqsave(&sess->vha->work_lock, flags); 1193 if (sess->free_pending) { 1194 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1195 return; 1196 } 1197 sess->free_pending = 1; 1198 /* 1199 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1200 * management from being sent. 1201 */ 1202 sess->flags |= FCF_ASYNC_SENT; 1203 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1204 1205 if (sess->se_sess) 1206 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1207 1208 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1209 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1210 sess->last_rscn_gen = sess->rscn_gen; 1211 sess->last_login_gen = sess->login_gen; 1212 1213 queue_work(sess->vha->hw->wq, &sess->free_work); 1214 } 1215 EXPORT_SYMBOL(qlt_unreg_sess); 1216 1217 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1218 { 1219 struct qla_hw_data *ha = vha->hw; 1220 struct fc_port *sess = NULL; 1221 uint16_t loop_id; 1222 int res = 0; 1223 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1224 unsigned long flags; 1225 1226 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1227 if (loop_id == 0xFFFF) { 1228 /* Global event */ 1229 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1230 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1231 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1232 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1233 } else { 1234 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1235 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1236 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1237 } 1238 1239 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1240 "Using sess for qla_tgt_reset: %p\n", sess); 1241 if (!sess) { 1242 res = -ESRCH; 1243 return res; 1244 } 1245 1246 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1247 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1248 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1249 mcmd, loop_id); 1250 1251 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1252 } 1253 1254 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1255 { 1256 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1257 sess->logout_on_delete = 0; 1258 sess->logo_ack_needed = 0; 1259 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1260 } 1261 } 1262 1263 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1264 { 1265 struct qla_tgt *tgt = sess->tgt; 1266 unsigned long flags; 1267 u16 sec; 1268 1269 switch (sess->disc_state) { 1270 case DSC_DELETE_PEND: 1271 return; 1272 case DSC_DELETED: 1273 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1274 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1275 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1276 wake_up_all(&tgt->waitQ); 1277 1278 if (sess->vha->fcport_count == 0) 1279 wake_up_all(&sess->vha->fcport_waitQ); 1280 return; 1281 } 1282 break; 1283 case DSC_UPD_FCPORT: 1284 /* 1285 * This port is not done reporting to upper layer. 1286 * let it finish 1287 */ 1288 sess->next_disc_state = DSC_DELETE_PEND; 1289 sec = jiffies_to_msecs(jiffies - 1290 sess->jiffies_at_registration)/1000; 1291 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1292 sess->sec_since_registration = sec; 1293 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1294 "%s %8phC : Slow Rport registration(%d Sec)\n", 1295 __func__, sess->port_name, sec); 1296 } 1297 return; 1298 default: 1299 break; 1300 } 1301 1302 spin_lock_irqsave(&sess->vha->work_lock, flags); 1303 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1304 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1305 return; 1306 } 1307 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1308 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1309 1310 sess->prli_pend_timer = 0; 1311 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1312 1313 qla24xx_chk_fcp_state(sess); 1314 1315 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1316 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1317 sess, sess->port_name, sess->fc4_type); 1318 1319 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1320 } 1321 1322 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1323 { 1324 struct fc_port *sess; 1325 scsi_qla_host_t *vha = tgt->vha; 1326 1327 list_for_each_entry(sess, &vha->vp_fcports, list) { 1328 if (sess->se_sess) 1329 qlt_schedule_sess_for_deletion(sess); 1330 } 1331 1332 /* At this point tgt could be already dead */ 1333 } 1334 1335 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1336 uint16_t *loop_id) 1337 { 1338 struct qla_hw_data *ha = vha->hw; 1339 dma_addr_t gid_list_dma; 1340 struct gid_list_info *gid_list, *gid; 1341 int res, rc, i; 1342 uint16_t entries; 1343 1344 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1345 &gid_list_dma, GFP_KERNEL); 1346 if (!gid_list) { 1347 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1348 "qla_target(%d): DMA Alloc failed of %u\n", 1349 vha->vp_idx, qla2x00_gid_list_size(ha)); 1350 return -ENOMEM; 1351 } 1352 1353 /* Get list of logged in devices */ 1354 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1355 if (rc != QLA_SUCCESS) { 1356 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1357 "qla_target(%d): get_id_list() failed: %x\n", 1358 vha->vp_idx, rc); 1359 res = -EBUSY; 1360 goto out_free_id_list; 1361 } 1362 1363 gid = gid_list; 1364 res = -ENOENT; 1365 for (i = 0; i < entries; i++) { 1366 if (gid->al_pa == s_id.al_pa && 1367 gid->area == s_id.area && 1368 gid->domain == s_id.domain) { 1369 *loop_id = le16_to_cpu(gid->loop_id); 1370 res = 0; 1371 break; 1372 } 1373 gid = (void *)gid + ha->gid_list_info_size; 1374 } 1375 1376 out_free_id_list: 1377 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1378 gid_list, gid_list_dma); 1379 return res; 1380 } 1381 1382 /* 1383 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1384 * Caller must put it. 1385 */ 1386 static struct fc_port *qlt_create_sess( 1387 struct scsi_qla_host *vha, 1388 fc_port_t *fcport, 1389 bool local) 1390 { 1391 struct qla_hw_data *ha = vha->hw; 1392 struct fc_port *sess = fcport; 1393 unsigned long flags; 1394 1395 if (vha->vha_tgt.qla_tgt->tgt_stop) 1396 return NULL; 1397 1398 if (fcport->se_sess) { 1399 if (!kref_get_unless_zero(&sess->sess_kref)) { 1400 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1401 "%s: kref_get_unless_zero failed for %8phC\n", 1402 __func__, sess->port_name); 1403 return NULL; 1404 } 1405 return fcport; 1406 } 1407 sess->tgt = vha->vha_tgt.qla_tgt; 1408 sess->local = local; 1409 1410 /* 1411 * Under normal circumstances we want to logout from firmware when 1412 * session eventually ends and release corresponding nport handle. 1413 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1414 * code will adjust these flags as necessary. 1415 */ 1416 sess->logout_on_delete = 1; 1417 sess->keep_nport_handle = 0; 1418 sess->logout_completed = 0; 1419 1420 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1421 &fcport->port_name[0], sess) < 0) { 1422 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1423 "(%d) %8phC check_initiator_node_acl failed\n", 1424 vha->vp_idx, fcport->port_name); 1425 return NULL; 1426 } else { 1427 kref_init(&fcport->sess_kref); 1428 /* 1429 * Take an extra reference to ->sess_kref here to handle 1430 * fc_port access across ->tgt.sess_lock reaquire. 1431 */ 1432 if (!kref_get_unless_zero(&sess->sess_kref)) { 1433 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1434 "%s: kref_get_unless_zero failed for %8phC\n", 1435 __func__, sess->port_name); 1436 return NULL; 1437 } 1438 1439 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1440 if (!IS_SW_RESV_ADDR(sess->d_id)) 1441 vha->vha_tgt.qla_tgt->sess_count++; 1442 1443 qlt_do_generation_tick(vha, &sess->generation); 1444 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1445 } 1446 1447 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1448 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1449 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1450 vha->vha_tgt.qla_tgt->sess_count); 1451 1452 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1453 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1454 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1455 vha->vp_idx, local ? "local " : "", fcport->port_name, 1456 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1457 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1458 1459 return sess; 1460 } 1461 1462 /* 1463 * max_gen - specifies maximum session generation 1464 * at which this deletion requestion is still valid 1465 */ 1466 void 1467 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1468 { 1469 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1470 struct fc_port *sess = fcport; 1471 unsigned long flags; 1472 1473 if (!vha->hw->tgt.tgt_ops) 1474 return; 1475 1476 if (!tgt) 1477 return; 1478 1479 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1480 if (tgt->tgt_stop) { 1481 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1482 return; 1483 } 1484 if (!sess->se_sess) { 1485 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1486 return; 1487 } 1488 1489 if (max_gen - sess->generation < 0) { 1490 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1491 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1492 "Ignoring stale deletion request for se_sess %p / sess %p" 1493 " for port %8phC, req_gen %d, sess_gen %d\n", 1494 sess->se_sess, sess, sess->port_name, max_gen, 1495 sess->generation); 1496 return; 1497 } 1498 1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1500 1501 sess->local = 1; 1502 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1503 qlt_schedule_sess_for_deletion(sess); 1504 } 1505 1506 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1507 { 1508 struct qla_hw_data *ha = tgt->ha; 1509 unsigned long flags; 1510 int res; 1511 /* 1512 * We need to protect against race, when tgt is freed before or 1513 * inside wake_up() 1514 */ 1515 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1516 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1517 "tgt %p, sess_count=%d\n", 1518 tgt, tgt->sess_count); 1519 res = (tgt->sess_count == 0); 1520 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1521 1522 return res; 1523 } 1524 1525 /* Called by tcm_qla2xxx configfs code */ 1526 int qlt_stop_phase1(struct qla_tgt *tgt) 1527 { 1528 struct scsi_qla_host *vha = tgt->vha; 1529 struct qla_hw_data *ha = tgt->ha; 1530 unsigned long flags; 1531 1532 mutex_lock(&ha->optrom_mutex); 1533 mutex_lock(&qla_tgt_mutex); 1534 1535 if (tgt->tgt_stop || tgt->tgt_stopped) { 1536 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1537 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1538 mutex_unlock(&qla_tgt_mutex); 1539 mutex_unlock(&ha->optrom_mutex); 1540 return -EPERM; 1541 } 1542 1543 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1544 vha->host_no, vha); 1545 /* 1546 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1547 * Lock is needed, because we still can get an incoming packet. 1548 */ 1549 mutex_lock(&vha->vha_tgt.tgt_mutex); 1550 tgt->tgt_stop = 1; 1551 qlt_clear_tgt_db(tgt); 1552 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1553 mutex_unlock(&qla_tgt_mutex); 1554 1555 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1556 "Waiting for sess works (tgt %p)", tgt); 1557 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1558 while (!list_empty(&tgt->sess_works_list)) { 1559 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1560 flush_scheduled_work(); 1561 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1562 } 1563 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1564 1565 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1566 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1567 1568 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1569 1570 /* Big hammer */ 1571 if (!ha->flags.host_shutting_down && 1572 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1573 qlt_disable_vha(vha); 1574 1575 /* Wait for sessions to clear out (just in case) */ 1576 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1577 mutex_unlock(&ha->optrom_mutex); 1578 1579 return 0; 1580 } 1581 EXPORT_SYMBOL(qlt_stop_phase1); 1582 1583 /* Called by tcm_qla2xxx configfs code */ 1584 void qlt_stop_phase2(struct qla_tgt *tgt) 1585 { 1586 scsi_qla_host_t *vha = tgt->vha; 1587 1588 if (tgt->tgt_stopped) { 1589 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1590 "Already in tgt->tgt_stopped state\n"); 1591 dump_stack(); 1592 return; 1593 } 1594 if (!tgt->tgt_stop) { 1595 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1596 "%s: phase1 stop is not completed\n", __func__); 1597 dump_stack(); 1598 return; 1599 } 1600 1601 mutex_lock(&tgt->ha->optrom_mutex); 1602 mutex_lock(&vha->vha_tgt.tgt_mutex); 1603 tgt->tgt_stop = 0; 1604 tgt->tgt_stopped = 1; 1605 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1606 mutex_unlock(&tgt->ha->optrom_mutex); 1607 1608 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1609 tgt); 1610 1611 switch (vha->qlini_mode) { 1612 case QLA2XXX_INI_MODE_EXCLUSIVE: 1613 vha->flags.online = 1; 1614 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1615 break; 1616 default: 1617 break; 1618 } 1619 } 1620 EXPORT_SYMBOL(qlt_stop_phase2); 1621 1622 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1623 static void qlt_release(struct qla_tgt *tgt) 1624 { 1625 scsi_qla_host_t *vha = tgt->vha; 1626 void *node; 1627 u64 key = 0; 1628 u16 i; 1629 struct qla_qpair_hint *h; 1630 struct qla_hw_data *ha = vha->hw; 1631 1632 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1633 qlt_stop_phase1(tgt); 1634 1635 if (!tgt->tgt_stopped) 1636 qlt_stop_phase2(tgt); 1637 1638 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1639 unsigned long flags; 1640 1641 h = &tgt->qphints[i]; 1642 if (h->qpair) { 1643 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1644 list_del(&h->hint_elem); 1645 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1646 h->qpair = NULL; 1647 } 1648 } 1649 kfree(tgt->qphints); 1650 mutex_lock(&qla_tgt_mutex); 1651 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1652 mutex_unlock(&qla_tgt_mutex); 1653 1654 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1655 btree_remove64(&tgt->lun_qpair_map, key); 1656 1657 btree_destroy64(&tgt->lun_qpair_map); 1658 1659 if (vha->vp_idx) 1660 if (ha->tgt.tgt_ops && 1661 ha->tgt.tgt_ops->remove_target && 1662 vha->vha_tgt.target_lport_ptr) 1663 ha->tgt.tgt_ops->remove_target(vha); 1664 1665 vha->vha_tgt.qla_tgt = NULL; 1666 1667 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1668 "Release of tgt %p finished\n", tgt); 1669 1670 kfree(tgt); 1671 } 1672 1673 /* ha->hardware_lock supposed to be held on entry */ 1674 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1675 const void *param, unsigned int param_size) 1676 { 1677 struct qla_tgt_sess_work_param *prm; 1678 unsigned long flags; 1679 1680 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1681 if (!prm) { 1682 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1683 "qla_target(%d): Unable to create session " 1684 "work, command will be refused", 0); 1685 return -ENOMEM; 1686 } 1687 1688 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1689 "Scheduling work (type %d, prm %p)" 1690 " to find session for param %p (size %d, tgt %p)\n", 1691 type, prm, param, param_size, tgt); 1692 1693 prm->type = type; 1694 memcpy(&prm->tm_iocb, param, param_size); 1695 1696 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1697 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1698 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1699 1700 schedule_work(&tgt->sess_work); 1701 1702 return 0; 1703 } 1704 1705 /* 1706 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1707 */ 1708 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1709 struct imm_ntfy_from_isp *ntfy, 1710 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1711 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1712 { 1713 struct scsi_qla_host *vha = qpair->vha; 1714 struct qla_hw_data *ha = vha->hw; 1715 request_t *pkt; 1716 struct nack_to_isp *nack; 1717 1718 if (!ha->flags.fw_started) 1719 return; 1720 1721 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1722 1723 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1724 if (!pkt) { 1725 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1726 "qla_target(%d): %s failed: unable to allocate " 1727 "request packet\n", vha->vp_idx, __func__); 1728 return; 1729 } 1730 1731 if (vha->vha_tgt.qla_tgt != NULL) 1732 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1733 1734 pkt->entry_type = NOTIFY_ACK_TYPE; 1735 pkt->entry_count = 1; 1736 1737 nack = (struct nack_to_isp *)pkt; 1738 nack->ox_id = ntfy->ox_id; 1739 1740 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1741 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1742 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1743 nack->u.isp24.flags = ntfy->u.isp24.flags & 1744 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1745 } 1746 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1747 nack->u.isp24.status = ntfy->u.isp24.status; 1748 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1749 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1750 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1751 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1752 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1753 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1754 nack->u.isp24.srr_reject_code = srr_reject_code; 1755 nack->u.isp24.srr_reject_code_expl = srr_explan; 1756 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1757 1758 /* TODO qualify this with EDIF enable */ 1759 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1760 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1761 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1762 } 1763 1764 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1765 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1766 vha->vp_idx, nack->u.isp24.status); 1767 1768 /* Memory Barrier */ 1769 wmb(); 1770 qla2x00_start_iocbs(vha, qpair->req); 1771 } 1772 1773 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1774 { 1775 struct scsi_qla_host *vha = mcmd->vha; 1776 struct qla_hw_data *ha = vha->hw; 1777 struct abts_resp_to_24xx *resp; 1778 __le32 f_ctl; 1779 uint32_t h; 1780 uint8_t *p; 1781 int rc; 1782 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1783 struct qla_qpair *qpair = mcmd->qpair; 1784 1785 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1786 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1787 ha, mcmd->fc_tm_rsp); 1788 1789 rc = qlt_check_reserve_free_req(qpair, 1); 1790 if (rc) { 1791 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1792 "qla_target(%d): %s failed: unable to allocate request packet\n", 1793 vha->vp_idx, __func__); 1794 return -EAGAIN; 1795 } 1796 1797 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1798 memset(resp, 0, sizeof(*resp)); 1799 1800 h = qlt_make_handle(qpair); 1801 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1802 /* 1803 * CTIO type 7 from the firmware doesn't provide a way to 1804 * know the initiator's LOOP ID, hence we can't find 1805 * the session and, so, the command. 1806 */ 1807 return -EAGAIN; 1808 } else { 1809 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1810 } 1811 1812 resp->handle = make_handle(qpair->req->id, h); 1813 resp->entry_type = ABTS_RESP_24XX; 1814 resp->entry_count = 1; 1815 resp->nport_handle = abts->nport_handle; 1816 resp->vp_index = vha->vp_idx; 1817 resp->sof_type = abts->sof_type; 1818 resp->exchange_address = abts->exchange_address; 1819 resp->fcp_hdr_le = abts->fcp_hdr_le; 1820 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1821 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1822 F_CTL_SEQ_INITIATIVE); 1823 p = (uint8_t *)&f_ctl; 1824 resp->fcp_hdr_le.f_ctl[0] = *p++; 1825 resp->fcp_hdr_le.f_ctl[1] = *p++; 1826 resp->fcp_hdr_le.f_ctl[2] = *p; 1827 1828 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1829 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1830 1831 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1832 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1833 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1834 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1835 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1836 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1837 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1838 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1839 } else { 1840 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1841 resp->payload.ba_rjt.reason_code = 1842 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1843 /* Other bytes are zero */ 1844 } 1845 1846 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1847 1848 /* Memory Barrier */ 1849 wmb(); 1850 if (qpair->reqq_start_iocbs) 1851 qpair->reqq_start_iocbs(qpair); 1852 else 1853 qla2x00_start_iocbs(vha, qpair->req); 1854 1855 return rc; 1856 } 1857 1858 /* 1859 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1860 */ 1861 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1862 struct abts_recv_from_24xx *abts, uint32_t status, 1863 bool ids_reversed) 1864 { 1865 struct scsi_qla_host *vha = qpair->vha; 1866 struct qla_hw_data *ha = vha->hw; 1867 struct abts_resp_to_24xx *resp; 1868 __le32 f_ctl; 1869 uint8_t *p; 1870 1871 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1872 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1873 ha, abts, status); 1874 1875 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1876 NULL); 1877 if (!resp) { 1878 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1879 "qla_target(%d): %s failed: unable to allocate " 1880 "request packet", vha->vp_idx, __func__); 1881 return; 1882 } 1883 1884 resp->entry_type = ABTS_RESP_24XX; 1885 resp->handle = QLA_TGT_SKIP_HANDLE; 1886 resp->entry_count = 1; 1887 resp->nport_handle = abts->nport_handle; 1888 resp->vp_index = vha->vp_idx; 1889 resp->sof_type = abts->sof_type; 1890 resp->exchange_address = abts->exchange_address; 1891 resp->fcp_hdr_le = abts->fcp_hdr_le; 1892 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1893 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1894 F_CTL_SEQ_INITIATIVE); 1895 p = (uint8_t *)&f_ctl; 1896 resp->fcp_hdr_le.f_ctl[0] = *p++; 1897 resp->fcp_hdr_le.f_ctl[1] = *p++; 1898 resp->fcp_hdr_le.f_ctl[2] = *p; 1899 if (ids_reversed) { 1900 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1901 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1902 } else { 1903 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1904 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1905 } 1906 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1907 if (status == FCP_TMF_CMPL) { 1908 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1909 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1910 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1911 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1912 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1913 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1914 } else { 1915 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1916 resp->payload.ba_rjt.reason_code = 1917 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1918 /* Other bytes are zero */ 1919 } 1920 1921 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1922 1923 /* Memory Barrier */ 1924 wmb(); 1925 if (qpair->reqq_start_iocbs) 1926 qpair->reqq_start_iocbs(qpair); 1927 else 1928 qla2x00_start_iocbs(vha, qpair->req); 1929 } 1930 1931 /* 1932 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1933 */ 1934 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1935 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1936 { 1937 struct ctio7_to_24xx *ctio; 1938 u16 tmp; 1939 struct abts_recv_from_24xx *entry; 1940 1941 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1942 if (ctio == NULL) { 1943 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1944 "qla_target(%d): %s failed: unable to allocate " 1945 "request packet\n", vha->vp_idx, __func__); 1946 return; 1947 } 1948 1949 if (mcmd) 1950 /* abts from remote port */ 1951 entry = &mcmd->orig_iocb.abts; 1952 else 1953 /* abts from this driver. */ 1954 entry = (struct abts_recv_from_24xx *)pkt; 1955 1956 /* 1957 * We've got on entrance firmware's response on by us generated 1958 * ABTS response. So, in it ID fields are reversed. 1959 */ 1960 1961 ctio->entry_type = CTIO_TYPE7; 1962 ctio->entry_count = 1; 1963 ctio->nport_handle = entry->nport_handle; 1964 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1965 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1966 ctio->vp_index = vha->vp_idx; 1967 ctio->exchange_addr = entry->exchange_addr_to_abort; 1968 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1969 1970 if (mcmd) { 1971 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1972 1973 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1974 tmp |= (mcmd->abort_io_attr << 9); 1975 else if (qpair->retry_term_cnt & 1) 1976 tmp |= (0x4 << 9); 1977 } else { 1978 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1979 1980 if (qpair->retry_term_cnt & 1) 1981 tmp |= (0x4 << 9); 1982 } 1983 ctio->u.status1.flags = cpu_to_le16(tmp); 1984 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1985 1986 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1987 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1988 le16_to_cpu(ctio->u.status1.flags), 1989 le16_to_cpu(ctio->u.status1.ox_id), 1990 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1991 1992 /* Memory Barrier */ 1993 wmb(); 1994 if (qpair->reqq_start_iocbs) 1995 qpair->reqq_start_iocbs(qpair); 1996 else 1997 qla2x00_start_iocbs(vha, qpair->req); 1998 1999 if (mcmd) 2000 qlt_build_abts_resp_iocb(mcmd); 2001 else 2002 qlt_24xx_send_abts_resp(qpair, 2003 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2004 2005 } 2006 2007 /* drop cmds for the given lun 2008 * XXX only looks for cmds on the port through which lun reset was recieved 2009 * XXX does not go through the list of other port (which may have cmds 2010 * for the same lun) 2011 */ 2012 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2013 { 2014 struct qla_tgt_sess_op *op; 2015 struct qla_tgt_cmd *cmd; 2016 uint32_t key; 2017 unsigned long flags; 2018 2019 key = sid_to_key(s_id); 2020 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2021 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 2022 uint32_t op_key; 2023 u64 op_lun; 2024 2025 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2026 op_lun = scsilun_to_int( 2027 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2028 if (op_key == key && op_lun == lun) 2029 op->aborted = true; 2030 } 2031 2032 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2033 uint32_t op_key; 2034 u64 op_lun; 2035 2036 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2037 op_lun = scsilun_to_int( 2038 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2039 if (op_key == key && op_lun == lun) 2040 op->aborted = true; 2041 } 2042 2043 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2044 uint32_t cmd_key; 2045 u64 cmd_lun; 2046 2047 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2048 cmd_lun = scsilun_to_int( 2049 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2050 if (cmd_key == key && cmd_lun == lun) 2051 cmd->aborted = 1; 2052 } 2053 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2054 } 2055 2056 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2057 uint64_t unpacked_lun) 2058 { 2059 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2060 struct qla_qpair_hint *h = NULL; 2061 2062 if (vha->flags.qpairs_available) { 2063 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2064 if (!h) 2065 h = &tgt->qphints[0]; 2066 } else { 2067 h = &tgt->qphints[0]; 2068 } 2069 2070 return h; 2071 } 2072 2073 static void qlt_do_tmr_work(struct work_struct *work) 2074 { 2075 struct qla_tgt_mgmt_cmd *mcmd = 2076 container_of(work, struct qla_tgt_mgmt_cmd, work); 2077 struct qla_hw_data *ha = mcmd->vha->hw; 2078 int rc; 2079 uint32_t tag; 2080 unsigned long flags; 2081 2082 switch (mcmd->tmr_func) { 2083 case QLA_TGT_ABTS: 2084 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2085 break; 2086 default: 2087 tag = 0; 2088 break; 2089 } 2090 2091 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2092 mcmd->tmr_func, tag); 2093 2094 if (rc != 0) { 2095 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2096 switch (mcmd->tmr_func) { 2097 case QLA_TGT_ABTS: 2098 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2099 qlt_build_abts_resp_iocb(mcmd); 2100 break; 2101 case QLA_TGT_LUN_RESET: 2102 case QLA_TGT_CLEAR_TS: 2103 case QLA_TGT_ABORT_TS: 2104 case QLA_TGT_CLEAR_ACA: 2105 case QLA_TGT_TARGET_RESET: 2106 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2107 qla_sam_status); 2108 break; 2109 2110 case QLA_TGT_ABORT_ALL: 2111 case QLA_TGT_NEXUS_LOSS_SESS: 2112 case QLA_TGT_NEXUS_LOSS: 2113 qlt_send_notify_ack(mcmd->qpair, 2114 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2115 break; 2116 } 2117 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2118 2119 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2120 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2121 mcmd->vha->vp_idx, rc); 2122 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2123 } 2124 } 2125 2126 /* ha->hardware_lock supposed to be held on entry */ 2127 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2128 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2129 { 2130 struct qla_hw_data *ha = vha->hw; 2131 struct qla_tgt_mgmt_cmd *mcmd; 2132 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2133 struct qla_tgt_cmd *abort_cmd; 2134 2135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2136 "qla_target(%d): task abort (tag=%d)\n", 2137 vha->vp_idx, abts->exchange_addr_to_abort); 2138 2139 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2140 if (mcmd == NULL) { 2141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2142 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2143 vha->vp_idx, __func__); 2144 return -ENOMEM; 2145 } 2146 memset(mcmd, 0, sizeof(*mcmd)); 2147 mcmd->cmd_type = TYPE_TGT_TMCMD; 2148 mcmd->sess = sess; 2149 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2150 mcmd->reset_count = ha->base_qpair->chip_reset; 2151 mcmd->tmr_func = QLA_TGT_ABTS; 2152 mcmd->qpair = h->qpair; 2153 mcmd->vha = vha; 2154 2155 /* 2156 * LUN is looked up by target-core internally based on the passed 2157 * abts->exchange_addr_to_abort tag. 2158 */ 2159 mcmd->se_cmd.cpuid = h->cpuid; 2160 2161 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2162 le32_to_cpu(abts->exchange_addr_to_abort)); 2163 if (!abort_cmd) 2164 return -EIO; 2165 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2166 2167 if (abort_cmd->qpair) { 2168 mcmd->qpair = abort_cmd->qpair; 2169 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2170 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2171 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2172 } 2173 2174 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2175 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2176 2177 return 0; 2178 } 2179 2180 /* 2181 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2182 */ 2183 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2184 struct abts_recv_from_24xx *abts) 2185 { 2186 struct qla_hw_data *ha = vha->hw; 2187 struct fc_port *sess; 2188 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2189 be_id_t s_id; 2190 int rc; 2191 unsigned long flags; 2192 2193 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2195 "qla_target(%d): ABTS: Abort Sequence not " 2196 "supported\n", vha->vp_idx); 2197 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2198 false); 2199 return; 2200 } 2201 2202 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2203 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2204 "qla_target(%d): ABTS: Unknown Exchange " 2205 "Address received\n", vha->vp_idx); 2206 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2207 false); 2208 return; 2209 } 2210 2211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2212 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2213 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2214 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2215 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2216 2217 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2218 2219 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2220 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2221 if (!sess) { 2222 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2223 "qla_target(%d): task abort for non-existent session\n", 2224 vha->vp_idx); 2225 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2226 2227 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2228 false); 2229 return; 2230 } 2231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2232 2233 2234 if (sess->deleted) { 2235 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2236 false); 2237 return; 2238 } 2239 2240 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2241 if (rc != 0) { 2242 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2243 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2244 vha->vp_idx, rc); 2245 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2246 false); 2247 return; 2248 } 2249 } 2250 2251 /* 2252 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2253 */ 2254 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2255 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2256 { 2257 struct scsi_qla_host *ha = mcmd->vha; 2258 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2259 struct ctio7_to_24xx *ctio; 2260 uint16_t temp; 2261 2262 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2263 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2264 ha, atio, resp_code); 2265 2266 2267 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2268 if (ctio == NULL) { 2269 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2270 "qla_target(%d): %s failed: unable to allocate " 2271 "request packet\n", ha->vp_idx, __func__); 2272 return; 2273 } 2274 2275 ctio->entry_type = CTIO_TYPE7; 2276 ctio->entry_count = 1; 2277 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2278 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2279 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2280 ctio->vp_index = ha->vp_idx; 2281 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2282 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2283 temp = (atio->u.isp24.attr << 9)| 2284 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2285 ctio->u.status1.flags = cpu_to_le16(temp); 2286 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2287 ctio->u.status1.ox_id = cpu_to_le16(temp); 2288 ctio->u.status1.scsi_status = 2289 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2290 ctio->u.status1.response_len = cpu_to_le16(8); 2291 ctio->u.status1.sense_data[0] = resp_code; 2292 2293 /* Memory Barrier */ 2294 wmb(); 2295 if (qpair->reqq_start_iocbs) 2296 qpair->reqq_start_iocbs(qpair); 2297 else 2298 qla2x00_start_iocbs(ha, qpair->req); 2299 } 2300 2301 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2302 { 2303 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2304 } 2305 EXPORT_SYMBOL(qlt_free_mcmd); 2306 2307 /* 2308 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2309 * reacquire 2310 */ 2311 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2312 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2313 { 2314 struct atio_from_isp *atio = &cmd->atio; 2315 struct ctio7_to_24xx *ctio; 2316 uint16_t temp; 2317 struct scsi_qla_host *vha = cmd->vha; 2318 2319 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2320 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2321 "sense_key=%02x, asc=%02x, ascq=%02x", 2322 vha, atio, scsi_status, sense_key, asc, ascq); 2323 2324 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2325 if (!ctio) { 2326 ql_dbg(ql_dbg_async, vha, 0x3067, 2327 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2328 vha->host_no, __func__); 2329 goto out; 2330 } 2331 2332 ctio->entry_type = CTIO_TYPE7; 2333 ctio->entry_count = 1; 2334 ctio->handle = QLA_TGT_SKIP_HANDLE; 2335 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2336 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2337 ctio->vp_index = vha->vp_idx; 2338 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2339 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2340 temp = (atio->u.isp24.attr << 9) | 2341 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2342 ctio->u.status1.flags = cpu_to_le16(temp); 2343 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2344 ctio->u.status1.ox_id = cpu_to_le16(temp); 2345 ctio->u.status1.scsi_status = 2346 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2347 ctio->u.status1.response_len = cpu_to_le16(18); 2348 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2349 2350 if (ctio->u.status1.residual != 0) 2351 ctio->u.status1.scsi_status |= 2352 cpu_to_le16(SS_RESIDUAL_UNDER); 2353 2354 /* Fixed format sense data. */ 2355 ctio->u.status1.sense_data[0] = 0x70; 2356 ctio->u.status1.sense_data[2] = sense_key; 2357 /* Additional sense length */ 2358 ctio->u.status1.sense_data[7] = 0xa; 2359 /* ASC and ASCQ */ 2360 ctio->u.status1.sense_data[12] = asc; 2361 ctio->u.status1.sense_data[13] = ascq; 2362 2363 /* Memory Barrier */ 2364 wmb(); 2365 2366 if (qpair->reqq_start_iocbs) 2367 qpair->reqq_start_iocbs(qpair); 2368 else 2369 qla2x00_start_iocbs(vha, qpair->req); 2370 2371 out: 2372 return; 2373 } 2374 2375 /* callback from target fabric module code */ 2376 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2377 { 2378 struct scsi_qla_host *vha = mcmd->sess->vha; 2379 struct qla_hw_data *ha = vha->hw; 2380 unsigned long flags; 2381 struct qla_qpair *qpair = mcmd->qpair; 2382 bool free_mcmd = true; 2383 2384 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2385 "TM response mcmd (%p) status %#x state %#x", 2386 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2387 2388 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2389 2390 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2391 /* 2392 * Either the port is not online or this request was from 2393 * previous life, just abort the processing. 2394 */ 2395 ql_dbg(ql_dbg_async, vha, 0xe100, 2396 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2397 vha->flags.online, qla2x00_reset_active(vha), 2398 mcmd->reset_count, qpair->chip_reset); 2399 ha->tgt.tgt_ops->free_mcmd(mcmd); 2400 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2401 return; 2402 } 2403 2404 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2405 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2406 case ELS_LOGO: 2407 case ELS_PRLO: 2408 case ELS_TPRLO: 2409 ql_dbg(ql_dbg_disc, vha, 0x2106, 2410 "TM response logo %8phC status %#x state %#x", 2411 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2412 mcmd->flags); 2413 qlt_schedule_sess_for_deletion(mcmd->sess); 2414 break; 2415 default: 2416 qlt_send_notify_ack(vha->hw->base_qpair, 2417 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2418 break; 2419 } 2420 } else { 2421 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2422 qlt_build_abts_resp_iocb(mcmd); 2423 free_mcmd = false; 2424 } else 2425 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2426 mcmd->fc_tm_rsp); 2427 } 2428 /* 2429 * Make the callback for ->free_mcmd() to queue_work() and invoke 2430 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2431 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2432 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2433 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2434 * qlt_xmit_tm_rsp() returns here.. 2435 */ 2436 if (free_mcmd) 2437 ha->tgt.tgt_ops->free_mcmd(mcmd); 2438 2439 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2440 } 2441 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2442 2443 /* No locks */ 2444 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2445 { 2446 struct qla_tgt_cmd *cmd = prm->cmd; 2447 2448 BUG_ON(cmd->sg_cnt == 0); 2449 2450 prm->sg = (struct scatterlist *)cmd->sg; 2451 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2452 cmd->sg_cnt, cmd->dma_data_direction); 2453 if (unlikely(prm->seg_cnt == 0)) 2454 goto out_err; 2455 2456 prm->cmd->sg_mapped = 1; 2457 2458 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2459 /* 2460 * If greater than four sg entries then we need to allocate 2461 * the continuation entries 2462 */ 2463 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2464 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2465 QLA_TGT_DATASEGS_PER_CMD_24XX, 2466 QLA_TGT_DATASEGS_PER_CONT_24XX); 2467 } else { 2468 /* DIF */ 2469 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2470 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2471 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2472 prm->tot_dsds = prm->seg_cnt; 2473 } else 2474 prm->tot_dsds = prm->seg_cnt; 2475 2476 if (cmd->prot_sg_cnt) { 2477 prm->prot_sg = cmd->prot_sg; 2478 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2479 cmd->prot_sg, cmd->prot_sg_cnt, 2480 cmd->dma_data_direction); 2481 if (unlikely(prm->prot_seg_cnt == 0)) 2482 goto out_err; 2483 2484 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2485 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2486 /* Dif Bundling not support here */ 2487 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2488 cmd->blk_sz); 2489 prm->tot_dsds += prm->prot_seg_cnt; 2490 } else 2491 prm->tot_dsds += prm->prot_seg_cnt; 2492 } 2493 } 2494 2495 return 0; 2496 2497 out_err: 2498 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2499 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2500 0, prm->cmd->sg_cnt); 2501 return -1; 2502 } 2503 2504 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2505 { 2506 struct qla_hw_data *ha; 2507 struct qla_qpair *qpair; 2508 2509 if (!cmd->sg_mapped) 2510 return; 2511 2512 qpair = cmd->qpair; 2513 2514 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2515 cmd->dma_data_direction); 2516 cmd->sg_mapped = 0; 2517 2518 if (cmd->prot_sg_cnt) 2519 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2520 cmd->dma_data_direction); 2521 2522 if (!cmd->ctx) 2523 return; 2524 ha = vha->hw; 2525 if (cmd->ctx_dsd_alloced) 2526 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2527 2528 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2529 } 2530 2531 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2532 uint32_t req_cnt) 2533 { 2534 uint32_t cnt; 2535 struct req_que *req = qpair->req; 2536 2537 if (req->cnt < (req_cnt + 2)) { 2538 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2539 rd_reg_dword_relaxed(req->req_q_out)); 2540 2541 if (req->ring_index < cnt) 2542 req->cnt = cnt - req->ring_index; 2543 else 2544 req->cnt = req->length - (req->ring_index - cnt); 2545 2546 if (unlikely(req->cnt < (req_cnt + 2))) 2547 return -EAGAIN; 2548 } 2549 2550 req->cnt -= req_cnt; 2551 2552 return 0; 2553 } 2554 2555 /* 2556 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2557 */ 2558 static inline void *qlt_get_req_pkt(struct req_que *req) 2559 { 2560 /* Adjust ring index. */ 2561 req->ring_index++; 2562 if (req->ring_index == req->length) { 2563 req->ring_index = 0; 2564 req->ring_ptr = req->ring; 2565 } else { 2566 req->ring_ptr++; 2567 } 2568 return (cont_entry_t *)req->ring_ptr; 2569 } 2570 2571 /* ha->hardware_lock supposed to be held on entry */ 2572 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2573 { 2574 uint32_t h; 2575 int index; 2576 uint8_t found = 0; 2577 struct req_que *req = qpair->req; 2578 2579 h = req->current_outstanding_cmd; 2580 2581 for (index = 1; index < req->num_outstanding_cmds; index++) { 2582 h++; 2583 if (h == req->num_outstanding_cmds) 2584 h = 1; 2585 2586 if (h == QLA_TGT_SKIP_HANDLE) 2587 continue; 2588 2589 if (!req->outstanding_cmds[h]) { 2590 found = 1; 2591 break; 2592 } 2593 } 2594 2595 if (found) { 2596 req->current_outstanding_cmd = h; 2597 } else { 2598 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2599 "qla_target(%d): Ran out of empty cmd slots\n", 2600 qpair->vha->vp_idx); 2601 h = QLA_TGT_NULL_HANDLE; 2602 } 2603 2604 return h; 2605 } 2606 2607 /* ha->hardware_lock supposed to be held on entry */ 2608 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2609 struct qla_tgt_prm *prm) 2610 { 2611 uint32_t h; 2612 struct ctio7_to_24xx *pkt; 2613 struct atio_from_isp *atio = &prm->cmd->atio; 2614 uint16_t temp; 2615 struct qla_tgt_cmd *cmd = prm->cmd; 2616 2617 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2618 prm->pkt = pkt; 2619 memset(pkt, 0, sizeof(*pkt)); 2620 2621 pkt->entry_type = CTIO_TYPE7; 2622 pkt->entry_count = (uint8_t)prm->req_cnt; 2623 pkt->vp_index = prm->cmd->vp_idx; 2624 2625 h = qlt_make_handle(qpair); 2626 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2627 /* 2628 * CTIO type 7 from the firmware doesn't provide a way to 2629 * know the initiator's LOOP ID, hence we can't find 2630 * the session and, so, the command. 2631 */ 2632 return -EAGAIN; 2633 } else 2634 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2635 2636 pkt->handle = make_handle(qpair->req->id, h); 2637 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2638 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2639 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2640 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2641 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2642 temp = atio->u.isp24.attr << 9; 2643 pkt->u.status0.flags |= cpu_to_le16(temp); 2644 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2645 pkt->u.status0.ox_id = cpu_to_le16(temp); 2646 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2647 2648 if (cmd->edif) { 2649 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2650 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2651 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2652 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2653 2654 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2655 } 2656 2657 return 0; 2658 } 2659 2660 /* 2661 * ha->hardware_lock supposed to be held on entry. We have already made sure 2662 * that there is sufficient amount of request entries to not drop it. 2663 */ 2664 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2665 { 2666 int cnt; 2667 struct dsd64 *cur_dsd; 2668 2669 /* Build continuation packets */ 2670 while (prm->seg_cnt > 0) { 2671 cont_a64_entry_t *cont_pkt64 = 2672 (cont_a64_entry_t *)qlt_get_req_pkt( 2673 prm->cmd->qpair->req); 2674 2675 /* 2676 * Make sure that from cont_pkt64 none of 2677 * 64-bit specific fields used for 32-bit 2678 * addressing. Cast to (cont_entry_t *) for 2679 * that. 2680 */ 2681 2682 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2683 2684 cont_pkt64->entry_count = 1; 2685 cont_pkt64->sys_define = 0; 2686 2687 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2688 cur_dsd = cont_pkt64->dsd; 2689 2690 /* Load continuation entry data segments */ 2691 for (cnt = 0; 2692 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2693 cnt++, prm->seg_cnt--) { 2694 append_dsd64(&cur_dsd, prm->sg); 2695 prm->sg = sg_next(prm->sg); 2696 } 2697 } 2698 } 2699 2700 /* 2701 * ha->hardware_lock supposed to be held on entry. We have already made sure 2702 * that there is sufficient amount of request entries to not drop it. 2703 */ 2704 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2705 { 2706 int cnt; 2707 struct dsd64 *cur_dsd; 2708 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2709 2710 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2711 2712 /* Setup packet address segment pointer */ 2713 cur_dsd = &pkt24->u.status0.dsd; 2714 2715 /* Set total data segment count */ 2716 if (prm->seg_cnt) 2717 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2718 2719 if (prm->seg_cnt == 0) { 2720 /* No data transfer */ 2721 cur_dsd->address = 0; 2722 cur_dsd->length = 0; 2723 return; 2724 } 2725 2726 /* If scatter gather */ 2727 2728 /* Load command entry data segments */ 2729 for (cnt = 0; 2730 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2731 cnt++, prm->seg_cnt--) { 2732 append_dsd64(&cur_dsd, prm->sg); 2733 prm->sg = sg_next(prm->sg); 2734 } 2735 2736 qlt_load_cont_data_segments(prm); 2737 } 2738 2739 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2740 { 2741 return cmd->bufflen > 0; 2742 } 2743 2744 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2745 { 2746 struct qla_tgt_cmd *cmd; 2747 struct scsi_qla_host *vha; 2748 2749 /* asc 0x10=dif error */ 2750 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2751 cmd = prm->cmd; 2752 vha = cmd->vha; 2753 /* ASCQ */ 2754 switch (prm->sense_buffer[13]) { 2755 case 1: 2756 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2757 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2758 "se_cmd=%p tag[%x]", 2759 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2760 cmd->atio.u.isp24.exchange_addr); 2761 break; 2762 case 2: 2763 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2764 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2765 "se_cmd=%p tag[%x]", 2766 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2767 cmd->atio.u.isp24.exchange_addr); 2768 break; 2769 case 3: 2770 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2771 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2772 "se_cmd=%p tag[%x]", 2773 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2774 cmd->atio.u.isp24.exchange_addr); 2775 break; 2776 default: 2777 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2778 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2779 "se_cmd=%p tag[%x]", 2780 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2781 cmd->atio.u.isp24.exchange_addr); 2782 break; 2783 } 2784 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2785 } 2786 } 2787 2788 /* 2789 * Called without ha->hardware_lock held 2790 */ 2791 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2792 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2793 uint32_t *full_req_cnt) 2794 { 2795 struct se_cmd *se_cmd = &cmd->se_cmd; 2796 struct qla_qpair *qpair = cmd->qpair; 2797 2798 prm->cmd = cmd; 2799 prm->tgt = cmd->tgt; 2800 prm->pkt = NULL; 2801 prm->rq_result = scsi_status; 2802 prm->sense_buffer = &cmd->sense_buffer[0]; 2803 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2804 prm->sg = NULL; 2805 prm->seg_cnt = -1; 2806 prm->req_cnt = 1; 2807 prm->residual = 0; 2808 prm->add_status_pkt = 0; 2809 prm->prot_sg = NULL; 2810 prm->prot_seg_cnt = 0; 2811 prm->tot_dsds = 0; 2812 2813 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2814 if (qlt_pci_map_calc_cnt(prm) != 0) 2815 return -EAGAIN; 2816 } 2817 2818 *full_req_cnt = prm->req_cnt; 2819 2820 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2821 prm->residual = se_cmd->residual_count; 2822 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2823 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2824 prm->residual, se_cmd->tag, 2825 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2826 cmd->bufflen, prm->rq_result); 2827 prm->rq_result |= SS_RESIDUAL_UNDER; 2828 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2829 prm->residual = se_cmd->residual_count; 2830 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2831 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2832 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2833 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2834 prm->rq_result |= SS_RESIDUAL_OVER; 2835 } 2836 2837 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2838 /* 2839 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2840 * ignored in *xmit_response() below 2841 */ 2842 if (qlt_has_data(cmd)) { 2843 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2844 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2845 (prm->rq_result != 0))) { 2846 prm->add_status_pkt = 1; 2847 (*full_req_cnt)++; 2848 } 2849 } 2850 } 2851 2852 return 0; 2853 } 2854 2855 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2856 int sending_sense) 2857 { 2858 if (cmd->qpair->enable_class_2) 2859 return 0; 2860 2861 if (sending_sense) 2862 return cmd->conf_compl_supported; 2863 else 2864 return cmd->qpair->enable_explicit_conf && 2865 cmd->conf_compl_supported; 2866 } 2867 2868 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2869 struct qla_tgt_prm *prm) 2870 { 2871 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2872 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2873 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2874 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2875 ctio->u.status0.flags |= cpu_to_le16( 2876 CTIO7_FLAGS_EXPLICIT_CONFORM | 2877 CTIO7_FLAGS_CONFORM_REQ); 2878 } 2879 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2880 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2881 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2882 int i; 2883 2884 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2885 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2886 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2887 "Skipping EXPLICIT_CONFORM and " 2888 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2889 "non GOOD status\n"); 2890 goto skip_explict_conf; 2891 } 2892 ctio->u.status1.flags |= cpu_to_le16( 2893 CTIO7_FLAGS_EXPLICIT_CONFORM | 2894 CTIO7_FLAGS_CONFORM_REQ); 2895 } 2896 skip_explict_conf: 2897 ctio->u.status1.flags &= 2898 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2899 ctio->u.status1.flags |= 2900 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2901 ctio->u.status1.scsi_status |= 2902 cpu_to_le16(SS_SENSE_LEN_VALID); 2903 ctio->u.status1.sense_length = 2904 cpu_to_le16(prm->sense_buffer_len); 2905 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2906 uint32_t v; 2907 2908 v = get_unaligned_be32( 2909 &((uint32_t *)prm->sense_buffer)[i]); 2910 put_unaligned_le32(v, 2911 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2912 } 2913 qlt_print_dif_err(prm); 2914 2915 } else { 2916 ctio->u.status1.flags &= 2917 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2918 ctio->u.status1.flags |= 2919 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2920 ctio->u.status1.sense_length = 0; 2921 memset(ctio->u.status1.sense_data, 0, 2922 sizeof(ctio->u.status1.sense_data)); 2923 } 2924 2925 /* Sense with len > 24, is it possible ??? */ 2926 } 2927 2928 static inline int 2929 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2930 { 2931 switch (se_cmd->prot_op) { 2932 case TARGET_PROT_DOUT_INSERT: 2933 case TARGET_PROT_DIN_STRIP: 2934 if (ql2xenablehba_err_chk >= 1) 2935 return 1; 2936 break; 2937 case TARGET_PROT_DOUT_PASS: 2938 case TARGET_PROT_DIN_PASS: 2939 if (ql2xenablehba_err_chk >= 2) 2940 return 1; 2941 break; 2942 case TARGET_PROT_DIN_INSERT: 2943 case TARGET_PROT_DOUT_STRIP: 2944 return 1; 2945 default: 2946 break; 2947 } 2948 return 0; 2949 } 2950 2951 static inline int 2952 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2953 { 2954 switch (se_cmd->prot_op) { 2955 case TARGET_PROT_DIN_INSERT: 2956 case TARGET_PROT_DOUT_INSERT: 2957 case TARGET_PROT_DIN_STRIP: 2958 case TARGET_PROT_DOUT_STRIP: 2959 case TARGET_PROT_DIN_PASS: 2960 case TARGET_PROT_DOUT_PASS: 2961 return 1; 2962 default: 2963 return 0; 2964 } 2965 return 0; 2966 } 2967 2968 /* 2969 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2970 */ 2971 static void 2972 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2973 uint16_t *pfw_prot_opts) 2974 { 2975 struct se_cmd *se_cmd = &cmd->se_cmd; 2976 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2977 scsi_qla_host_t *vha = cmd->tgt->vha; 2978 struct qla_hw_data *ha = vha->hw; 2979 uint32_t t32 = 0; 2980 2981 /* 2982 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2983 * have been immplemented by TCM, before AppTag is avail. 2984 * Look for modesense_handlers[] 2985 */ 2986 ctx->app_tag = 0; 2987 ctx->app_tag_mask[0] = 0x0; 2988 ctx->app_tag_mask[1] = 0x0; 2989 2990 if (IS_PI_UNINIT_CAPABLE(ha)) { 2991 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2992 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2993 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2994 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2995 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2996 } 2997 2998 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2999 3000 switch (se_cmd->prot_type) { 3001 case TARGET_DIF_TYPE0_PROT: 3002 /* 3003 * No check for ql2xenablehba_err_chk, as it 3004 * would be an I/O error if hba tag generation 3005 * is not done. 3006 */ 3007 ctx->ref_tag = cpu_to_le32(lba); 3008 /* enable ALL bytes of the ref tag */ 3009 ctx->ref_tag_mask[0] = 0xff; 3010 ctx->ref_tag_mask[1] = 0xff; 3011 ctx->ref_tag_mask[2] = 0xff; 3012 ctx->ref_tag_mask[3] = 0xff; 3013 break; 3014 case TARGET_DIF_TYPE1_PROT: 3015 /* 3016 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3017 * REF tag, and 16 bit app tag. 3018 */ 3019 ctx->ref_tag = cpu_to_le32(lba); 3020 if (!qla_tgt_ref_mask_check(se_cmd) || 3021 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3022 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3023 break; 3024 } 3025 /* enable ALL bytes of the ref tag */ 3026 ctx->ref_tag_mask[0] = 0xff; 3027 ctx->ref_tag_mask[1] = 0xff; 3028 ctx->ref_tag_mask[2] = 0xff; 3029 ctx->ref_tag_mask[3] = 0xff; 3030 break; 3031 case TARGET_DIF_TYPE2_PROT: 3032 /* 3033 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3034 * tag has to match LBA in CDB + N 3035 */ 3036 ctx->ref_tag = cpu_to_le32(lba); 3037 if (!qla_tgt_ref_mask_check(se_cmd) || 3038 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3039 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3040 break; 3041 } 3042 /* enable ALL bytes of the ref tag */ 3043 ctx->ref_tag_mask[0] = 0xff; 3044 ctx->ref_tag_mask[1] = 0xff; 3045 ctx->ref_tag_mask[2] = 0xff; 3046 ctx->ref_tag_mask[3] = 0xff; 3047 break; 3048 case TARGET_DIF_TYPE3_PROT: 3049 /* For TYPE 3 protection: 16 bit GUARD only */ 3050 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3051 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3052 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3053 break; 3054 } 3055 } 3056 3057 static inline int 3058 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3059 { 3060 struct dsd64 *cur_dsd; 3061 uint32_t transfer_length = 0; 3062 uint32_t data_bytes; 3063 uint32_t dif_bytes; 3064 uint8_t bundling = 1; 3065 struct crc_context *crc_ctx_pkt = NULL; 3066 struct qla_hw_data *ha; 3067 struct ctio_crc2_to_fw *pkt; 3068 dma_addr_t crc_ctx_dma; 3069 uint16_t fw_prot_opts = 0; 3070 struct qla_tgt_cmd *cmd = prm->cmd; 3071 struct se_cmd *se_cmd = &cmd->se_cmd; 3072 uint32_t h; 3073 struct atio_from_isp *atio = &prm->cmd->atio; 3074 struct qla_tc_param tc; 3075 uint16_t t16; 3076 scsi_qla_host_t *vha = cmd->vha; 3077 3078 ha = vha->hw; 3079 3080 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3081 prm->pkt = pkt; 3082 memset(pkt, 0, sizeof(*pkt)); 3083 3084 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3085 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3086 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3087 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3088 3089 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3090 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3091 bundling = 0; 3092 3093 /* Compute dif len and adjust data len to incude protection */ 3094 data_bytes = cmd->bufflen; 3095 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3096 3097 switch (se_cmd->prot_op) { 3098 case TARGET_PROT_DIN_INSERT: 3099 case TARGET_PROT_DOUT_STRIP: 3100 transfer_length = data_bytes; 3101 if (cmd->prot_sg_cnt) 3102 data_bytes += dif_bytes; 3103 break; 3104 case TARGET_PROT_DIN_STRIP: 3105 case TARGET_PROT_DOUT_INSERT: 3106 case TARGET_PROT_DIN_PASS: 3107 case TARGET_PROT_DOUT_PASS: 3108 transfer_length = data_bytes + dif_bytes; 3109 break; 3110 default: 3111 BUG(); 3112 break; 3113 } 3114 3115 if (!qlt_hba_err_chk_enabled(se_cmd)) 3116 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3117 /* HBA error checking enabled */ 3118 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3119 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3120 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3121 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3122 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3123 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3124 } 3125 3126 switch (se_cmd->prot_op) { 3127 case TARGET_PROT_DIN_INSERT: 3128 case TARGET_PROT_DOUT_INSERT: 3129 fw_prot_opts |= PO_MODE_DIF_INSERT; 3130 break; 3131 case TARGET_PROT_DIN_STRIP: 3132 case TARGET_PROT_DOUT_STRIP: 3133 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3134 break; 3135 case TARGET_PROT_DIN_PASS: 3136 case TARGET_PROT_DOUT_PASS: 3137 fw_prot_opts |= PO_MODE_DIF_PASS; 3138 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3139 break; 3140 default:/* Normal Request */ 3141 fw_prot_opts |= PO_MODE_DIF_PASS; 3142 break; 3143 } 3144 3145 /* ---- PKT ---- */ 3146 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3147 pkt->entry_type = CTIO_CRC2; 3148 pkt->entry_count = 1; 3149 pkt->vp_index = cmd->vp_idx; 3150 3151 h = qlt_make_handle(qpair); 3152 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3153 /* 3154 * CTIO type 7 from the firmware doesn't provide a way to 3155 * know the initiator's LOOP ID, hence we can't find 3156 * the session and, so, the command. 3157 */ 3158 return -EAGAIN; 3159 } else 3160 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3161 3162 pkt->handle = make_handle(qpair->req->id, h); 3163 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3164 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3165 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3166 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3167 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3168 3169 /* silence compile warning */ 3170 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3171 pkt->ox_id = cpu_to_le16(t16); 3172 3173 t16 = (atio->u.isp24.attr << 9); 3174 pkt->flags |= cpu_to_le16(t16); 3175 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3176 3177 /* Set transfer direction */ 3178 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3179 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3180 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3181 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3182 3183 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3184 /* Fibre channel byte count */ 3185 pkt->transfer_length = cpu_to_le32(transfer_length); 3186 3187 /* ----- CRC context -------- */ 3188 3189 /* Allocate CRC context from global pool */ 3190 crc_ctx_pkt = cmd->ctx = 3191 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3192 3193 if (!crc_ctx_pkt) 3194 goto crc_queuing_error; 3195 3196 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3197 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3198 3199 /* Set handle */ 3200 crc_ctx_pkt->handle = pkt->handle; 3201 3202 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3203 3204 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3205 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3206 3207 if (!bundling) { 3208 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3209 } else { 3210 /* 3211 * Configure Bundling if we need to fetch interlaving 3212 * protection PCI accesses 3213 */ 3214 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3215 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3216 crc_ctx_pkt->u.bundling.dseg_count = 3217 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3218 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3219 } 3220 3221 /* Finish the common fields of CRC pkt */ 3222 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3223 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3224 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3225 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3226 3227 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3228 tc.vha = vha; 3229 tc.blk_sz = cmd->blk_sz; 3230 tc.bufflen = cmd->bufflen; 3231 tc.sg = cmd->sg; 3232 tc.prot_sg = cmd->prot_sg; 3233 tc.ctx = crc_ctx_pkt; 3234 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3235 3236 /* Walks data segments */ 3237 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3238 3239 if (!bundling && prm->prot_seg_cnt) { 3240 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3241 prm->tot_dsds, &tc)) 3242 goto crc_queuing_error; 3243 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3244 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3245 goto crc_queuing_error; 3246 3247 if (bundling && prm->prot_seg_cnt) { 3248 /* Walks dif segments */ 3249 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3250 3251 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3252 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3253 prm->prot_seg_cnt, cmd)) 3254 goto crc_queuing_error; 3255 } 3256 return QLA_SUCCESS; 3257 3258 crc_queuing_error: 3259 /* Cleanup will be performed by the caller */ 3260 qpair->req->outstanding_cmds[h] = NULL; 3261 3262 return QLA_FUNCTION_FAILED; 3263 } 3264 3265 /* 3266 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3267 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3268 */ 3269 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3270 uint8_t scsi_status) 3271 { 3272 struct scsi_qla_host *vha = cmd->vha; 3273 struct qla_qpair *qpair = cmd->qpair; 3274 struct ctio7_to_24xx *pkt; 3275 struct qla_tgt_prm prm; 3276 uint32_t full_req_cnt = 0; 3277 unsigned long flags = 0; 3278 int res; 3279 3280 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3281 (cmd->sess && cmd->sess->deleted)) { 3282 cmd->state = QLA_TGT_STATE_PROCESSED; 3283 return 0; 3284 } 3285 3286 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3287 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3288 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3289 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3290 &cmd->se_cmd, qpair->id); 3291 3292 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3293 &full_req_cnt); 3294 if (unlikely(res != 0)) { 3295 return res; 3296 } 3297 3298 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3299 3300 if (xmit_type == QLA_TGT_XMIT_STATUS) 3301 qpair->tgt_counters.core_qla_snd_status++; 3302 else 3303 qpair->tgt_counters.core_qla_que_buf++; 3304 3305 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3306 /* 3307 * Either the port is not online or this request was from 3308 * previous life, just abort the processing. 3309 */ 3310 cmd->state = QLA_TGT_STATE_PROCESSED; 3311 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3312 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3313 vha->flags.online, qla2x00_reset_active(vha), 3314 cmd->reset_count, qpair->chip_reset); 3315 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3316 return 0; 3317 } 3318 3319 /* Does F/W have an IOCBs for this request */ 3320 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3321 if (unlikely(res)) 3322 goto out_unmap_unlock; 3323 3324 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3325 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3326 else 3327 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3328 if (unlikely(res != 0)) { 3329 qpair->req->cnt += full_req_cnt; 3330 goto out_unmap_unlock; 3331 } 3332 3333 pkt = (struct ctio7_to_24xx *)prm.pkt; 3334 3335 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3336 pkt->u.status0.flags |= 3337 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3338 CTIO7_FLAGS_STATUS_MODE_0); 3339 3340 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3341 qlt_load_data_segments(&prm); 3342 3343 if (prm.add_status_pkt == 0) { 3344 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3345 pkt->u.status0.scsi_status = 3346 cpu_to_le16(prm.rq_result); 3347 if (!cmd->edif) 3348 pkt->u.status0.residual = 3349 cpu_to_le32(prm.residual); 3350 3351 pkt->u.status0.flags |= cpu_to_le16( 3352 CTIO7_FLAGS_SEND_STATUS); 3353 if (qlt_need_explicit_conf(cmd, 0)) { 3354 pkt->u.status0.flags |= 3355 cpu_to_le16( 3356 CTIO7_FLAGS_EXPLICIT_CONFORM | 3357 CTIO7_FLAGS_CONFORM_REQ); 3358 } 3359 } 3360 3361 } else { 3362 /* 3363 * We have already made sure that there is sufficient 3364 * amount of request entries to not drop HW lock in 3365 * req_pkt(). 3366 */ 3367 struct ctio7_to_24xx *ctio = 3368 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3369 qpair->req); 3370 3371 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3372 "Building additional status packet 0x%p.\n", 3373 ctio); 3374 3375 /* 3376 * T10Dif: ctio_crc2_to_fw overlay ontop of 3377 * ctio7_to_24xx 3378 */ 3379 memcpy(ctio, pkt, sizeof(*ctio)); 3380 /* reset back to CTIO7 */ 3381 ctio->entry_count = 1; 3382 ctio->entry_type = CTIO_TYPE7; 3383 ctio->dseg_count = 0; 3384 ctio->u.status1.flags &= ~cpu_to_le16( 3385 CTIO7_FLAGS_DATA_IN); 3386 3387 /* Real finish is ctio_m1's finish */ 3388 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3389 pkt->u.status0.flags |= cpu_to_le16( 3390 CTIO7_FLAGS_DONT_RET_CTIO); 3391 3392 /* qlt_24xx_init_ctio_to_isp will correct 3393 * all neccessary fields that's part of CTIO7. 3394 * There should be no residual of CTIO-CRC2 data. 3395 */ 3396 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3397 &prm); 3398 } 3399 } else 3400 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3401 3402 3403 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3404 cmd->cmd_sent_to_fw = 1; 3405 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3406 3407 /* Memory Barrier */ 3408 wmb(); 3409 if (qpair->reqq_start_iocbs) 3410 qpair->reqq_start_iocbs(qpair); 3411 else 3412 qla2x00_start_iocbs(vha, qpair->req); 3413 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3414 3415 return 0; 3416 3417 out_unmap_unlock: 3418 qlt_unmap_sg(vha, cmd); 3419 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3420 3421 return res; 3422 } 3423 EXPORT_SYMBOL(qlt_xmit_response); 3424 3425 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3426 { 3427 struct ctio7_to_24xx *pkt; 3428 struct scsi_qla_host *vha = cmd->vha; 3429 struct qla_tgt *tgt = cmd->tgt; 3430 struct qla_tgt_prm prm; 3431 unsigned long flags = 0; 3432 int res = 0; 3433 struct qla_qpair *qpair = cmd->qpair; 3434 3435 memset(&prm, 0, sizeof(prm)); 3436 prm.cmd = cmd; 3437 prm.tgt = tgt; 3438 prm.sg = NULL; 3439 prm.req_cnt = 1; 3440 3441 /* Calculate number of entries and segments required */ 3442 if (qlt_pci_map_calc_cnt(&prm) != 0) 3443 return -EAGAIN; 3444 3445 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3446 (cmd->sess && cmd->sess->deleted)) { 3447 /* 3448 * Either the port is not online or this request was from 3449 * previous life, just abort the processing. 3450 */ 3451 cmd->aborted = 1; 3452 cmd->write_data_transferred = 0; 3453 cmd->state = QLA_TGT_STATE_DATA_IN; 3454 vha->hw->tgt.tgt_ops->handle_data(cmd); 3455 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3456 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3457 vha->flags.online, qla2x00_reset_active(vha), 3458 cmd->reset_count, qpair->chip_reset); 3459 return 0; 3460 } 3461 3462 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3463 /* Does F/W have an IOCBs for this request */ 3464 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3465 if (res != 0) 3466 goto out_unlock_free_unmap; 3467 if (cmd->se_cmd.prot_op) 3468 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3469 else 3470 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3471 3472 if (unlikely(res != 0)) { 3473 qpair->req->cnt += prm.req_cnt; 3474 goto out_unlock_free_unmap; 3475 } 3476 3477 pkt = (struct ctio7_to_24xx *)prm.pkt; 3478 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3479 CTIO7_FLAGS_STATUS_MODE_0); 3480 3481 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3482 qlt_load_data_segments(&prm); 3483 3484 cmd->state = QLA_TGT_STATE_NEED_DATA; 3485 cmd->cmd_sent_to_fw = 1; 3486 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3487 3488 /* Memory Barrier */ 3489 wmb(); 3490 if (qpair->reqq_start_iocbs) 3491 qpair->reqq_start_iocbs(qpair); 3492 else 3493 qla2x00_start_iocbs(vha, qpair->req); 3494 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3495 3496 return res; 3497 3498 out_unlock_free_unmap: 3499 qlt_unmap_sg(vha, cmd); 3500 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3501 3502 return res; 3503 } 3504 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3505 3506 3507 /* 3508 * it is assumed either hardware_lock or qpair lock is held. 3509 */ 3510 static void 3511 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3512 struct ctio_crc_from_fw *sts) 3513 { 3514 uint8_t *ap = &sts->actual_dif[0]; 3515 uint8_t *ep = &sts->expected_dif[0]; 3516 uint64_t lba = cmd->se_cmd.t_task_lba; 3517 uint8_t scsi_status, sense_key, asc, ascq; 3518 unsigned long flags; 3519 struct scsi_qla_host *vha = cmd->vha; 3520 3521 cmd->trc_flags |= TRC_DIF_ERR; 3522 3523 cmd->a_guard = get_unaligned_be16(ap + 0); 3524 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3525 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3526 3527 cmd->e_guard = get_unaligned_be16(ep + 0); 3528 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3529 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3530 3531 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3532 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3533 3534 scsi_status = sense_key = asc = ascq = 0; 3535 3536 /* check appl tag */ 3537 if (cmd->e_app_tag != cmd->a_app_tag) { 3538 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3539 "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]", 3540 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3541 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3542 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3543 cmd->atio.u.isp24.fcp_hdr.ox_id); 3544 3545 cmd->dif_err_code = DIF_ERR_APP; 3546 scsi_status = SAM_STAT_CHECK_CONDITION; 3547 sense_key = ABORTED_COMMAND; 3548 asc = 0x10; 3549 ascq = 0x2; 3550 } 3551 3552 /* check ref tag */ 3553 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3554 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3555 "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] ", 3556 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3557 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3558 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3559 cmd->atio.u.isp24.fcp_hdr.ox_id); 3560 3561 cmd->dif_err_code = DIF_ERR_REF; 3562 scsi_status = SAM_STAT_CHECK_CONDITION; 3563 sense_key = ABORTED_COMMAND; 3564 asc = 0x10; 3565 ascq = 0x3; 3566 goto out; 3567 } 3568 3569 /* check guard */ 3570 if (cmd->e_guard != cmd->a_guard) { 3571 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3572 "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]", 3573 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3574 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3575 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3576 cmd->atio.u.isp24.fcp_hdr.ox_id); 3577 3578 cmd->dif_err_code = DIF_ERR_GRD; 3579 scsi_status = SAM_STAT_CHECK_CONDITION; 3580 sense_key = ABORTED_COMMAND; 3581 asc = 0x10; 3582 ascq = 0x1; 3583 } 3584 out: 3585 switch (cmd->state) { 3586 case QLA_TGT_STATE_NEED_DATA: 3587 /* handle_data will load DIF error code */ 3588 cmd->state = QLA_TGT_STATE_DATA_IN; 3589 vha->hw->tgt.tgt_ops->handle_data(cmd); 3590 break; 3591 default: 3592 spin_lock_irqsave(&cmd->cmd_lock, flags); 3593 if (cmd->aborted) { 3594 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3595 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3596 break; 3597 } 3598 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3599 3600 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3601 ascq); 3602 /* assume scsi status gets out on the wire. 3603 * Will not wait for completion. 3604 */ 3605 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3606 break; 3607 } 3608 } 3609 3610 /* If hardware_lock held on entry, might drop it, then reaquire */ 3611 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3612 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3613 struct imm_ntfy_from_isp *ntfy) 3614 { 3615 struct nack_to_isp *nack; 3616 struct qla_hw_data *ha = vha->hw; 3617 request_t *pkt; 3618 int ret = 0; 3619 3620 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3621 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3622 3623 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3624 if (pkt == NULL) { 3625 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3626 "qla_target(%d): %s failed: unable to allocate " 3627 "request packet\n", vha->vp_idx, __func__); 3628 return -ENOMEM; 3629 } 3630 3631 pkt->entry_type = NOTIFY_ACK_TYPE; 3632 pkt->entry_count = 1; 3633 pkt->handle = QLA_TGT_SKIP_HANDLE; 3634 3635 nack = (struct nack_to_isp *)pkt; 3636 nack->ox_id = ntfy->ox_id; 3637 3638 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3639 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3640 nack->u.isp24.flags = ntfy->u.isp24.flags & 3641 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3642 } 3643 3644 /* terminate */ 3645 nack->u.isp24.flags |= 3646 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3647 3648 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3649 nack->u.isp24.status = ntfy->u.isp24.status; 3650 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3651 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3652 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3653 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3654 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3655 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3656 3657 qla2x00_start_iocbs(vha, vha->req); 3658 return ret; 3659 } 3660 3661 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3662 struct imm_ntfy_from_isp *imm, int ha_locked) 3663 { 3664 int rc; 3665 3666 WARN_ON_ONCE(!ha_locked); 3667 rc = __qlt_send_term_imm_notif(vha, imm); 3668 pr_debug("rc = %d\n", rc); 3669 } 3670 3671 /* 3672 * If hardware_lock held on entry, might drop it, then reaquire 3673 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3674 */ 3675 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3676 struct qla_tgt_cmd *cmd, 3677 struct atio_from_isp *atio) 3678 { 3679 struct scsi_qla_host *vha = qpair->vha; 3680 struct ctio7_to_24xx *ctio24; 3681 struct qla_hw_data *ha = vha->hw; 3682 request_t *pkt; 3683 int ret = 0; 3684 uint16_t temp; 3685 3686 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3687 3688 if (cmd) 3689 vha = cmd->vha; 3690 3691 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3692 if (pkt == NULL) { 3693 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3694 "qla_target(%d): %s failed: unable to allocate " 3695 "request packet\n", vha->vp_idx, __func__); 3696 return -ENOMEM; 3697 } 3698 3699 if (cmd != NULL) { 3700 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3701 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3702 "qla_target(%d): Terminating cmd %p with " 3703 "incorrect state %d\n", vha->vp_idx, cmd, 3704 cmd->state); 3705 } else 3706 ret = 1; 3707 } 3708 3709 qpair->tgt_counters.num_term_xchg_sent++; 3710 pkt->entry_count = 1; 3711 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3712 3713 ctio24 = (struct ctio7_to_24xx *)pkt; 3714 ctio24->entry_type = CTIO_TYPE7; 3715 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3716 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3717 ctio24->vp_index = vha->vp_idx; 3718 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3719 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3720 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3721 CTIO7_FLAGS_TERMINATE; 3722 ctio24->u.status1.flags = cpu_to_le16(temp); 3723 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3724 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3725 3726 /* Memory Barrier */ 3727 wmb(); 3728 if (qpair->reqq_start_iocbs) 3729 qpair->reqq_start_iocbs(qpair); 3730 else 3731 qla2x00_start_iocbs(vha, qpair->req); 3732 return ret; 3733 } 3734 3735 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3736 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3737 int ul_abort) 3738 { 3739 struct scsi_qla_host *vha; 3740 unsigned long flags = 0; 3741 int rc; 3742 3743 /* why use different vha? NPIV */ 3744 if (cmd) 3745 vha = cmd->vha; 3746 else 3747 vha = qpair->vha; 3748 3749 if (ha_locked) { 3750 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3751 if (rc == -ENOMEM) 3752 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3753 goto done; 3754 } 3755 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3756 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3757 if (rc == -ENOMEM) 3758 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3759 3760 done: 3761 if (cmd && !ul_abort && !cmd->aborted) { 3762 if (cmd->sg_mapped) 3763 qlt_unmap_sg(vha, cmd); 3764 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3765 } 3766 3767 if (!ha_locked) 3768 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3769 3770 return; 3771 } 3772 3773 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3774 { 3775 struct list_head free_list; 3776 struct qla_tgt_cmd *cmd, *tcmd; 3777 3778 vha->hw->tgt.leak_exchg_thresh_hold = 3779 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3780 3781 cmd = tcmd = NULL; 3782 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3783 INIT_LIST_HEAD(&free_list); 3784 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3785 3786 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3787 list_del(&cmd->cmd_list); 3788 /* This cmd was never sent to TCM. There is no need 3789 * to schedule free or call free_cmd 3790 */ 3791 qlt_free_cmd(cmd); 3792 vha->hw->tgt.num_qfull_cmds_alloc--; 3793 } 3794 } 3795 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3796 } 3797 3798 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3799 { 3800 uint32_t total_leaked; 3801 3802 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3803 3804 if (vha->hw->tgt.leak_exchg_thresh_hold && 3805 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3806 3807 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3808 "Chip reset due to exchange starvation: %d/%d.\n", 3809 total_leaked, vha->hw->cur_fw_xcb_count); 3810 3811 if (IS_P3P_TYPE(vha->hw)) 3812 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3813 else 3814 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3815 qla2xxx_wake_dpc(vha); 3816 } 3817 3818 } 3819 3820 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3821 { 3822 struct qla_tgt *tgt = cmd->tgt; 3823 struct scsi_qla_host *vha = tgt->vha; 3824 struct se_cmd *se_cmd = &cmd->se_cmd; 3825 unsigned long flags; 3826 3827 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3828 "qla_target(%d): terminating exchange for aborted cmd=%p " 3829 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3830 se_cmd->tag); 3831 3832 spin_lock_irqsave(&cmd->cmd_lock, flags); 3833 if (cmd->aborted) { 3834 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3835 /* 3836 * It's normal to see 2 calls in this path: 3837 * 1) XFER Rdy completion + CMD_T_ABORT 3838 * 2) TCM TMR - drain_state_list 3839 */ 3840 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3841 "multiple abort. %p transport_state %x, t_state %x, " 3842 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3843 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3844 return -EIO; 3845 } 3846 cmd->aborted = 1; 3847 cmd->trc_flags |= TRC_ABORT; 3848 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3849 3850 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3851 return 0; 3852 } 3853 EXPORT_SYMBOL(qlt_abort_cmd); 3854 3855 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3856 { 3857 struct fc_port *sess = cmd->sess; 3858 3859 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3860 "%s: se_cmd[%p] ox_id %04x\n", 3861 __func__, &cmd->se_cmd, 3862 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3863 3864 BUG_ON(cmd->cmd_in_wq); 3865 3866 if (cmd->sg_mapped) 3867 qlt_unmap_sg(cmd->vha, cmd); 3868 3869 if (!cmd->q_full) 3870 qlt_decr_num_pend_cmds(cmd->vha); 3871 3872 BUG_ON(cmd->sg_mapped); 3873 cmd->jiffies_at_free = get_jiffies_64(); 3874 if (unlikely(cmd->free_sg)) 3875 kfree(cmd->sg); 3876 3877 if (!sess || !sess->se_sess) { 3878 WARN_ON(1); 3879 return; 3880 } 3881 cmd->jiffies_at_free = get_jiffies_64(); 3882 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3883 } 3884 EXPORT_SYMBOL(qlt_free_cmd); 3885 3886 /* 3887 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3888 */ 3889 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3890 struct qla_tgt_cmd *cmd, uint32_t status) 3891 { 3892 int term = 0; 3893 struct scsi_qla_host *vha = qpair->vha; 3894 3895 if (cmd->se_cmd.prot_op) 3896 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3897 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3898 "se_cmd=%p tag[%x] op %#x/%s", 3899 cmd->lba, cmd->lba, 3900 cmd->num_blks, &cmd->se_cmd, 3901 cmd->atio.u.isp24.exchange_addr, 3902 cmd->se_cmd.prot_op, 3903 prot_op_str(cmd->se_cmd.prot_op)); 3904 3905 if (ctio != NULL) { 3906 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3907 3908 term = !(c->flags & 3909 cpu_to_le16(OF_TERM_EXCH)); 3910 } else 3911 term = 1; 3912 3913 if (term) 3914 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3915 3916 return term; 3917 } 3918 3919 3920 /* ha->hardware_lock supposed to be held on entry */ 3921 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3922 struct rsp_que *rsp, uint32_t handle, void *ctio) 3923 { 3924 void *cmd = NULL; 3925 struct req_que *req; 3926 int qid = GET_QID(handle); 3927 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3928 3929 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3930 return NULL; 3931 3932 if (qid == rsp->req->id) { 3933 req = rsp->req; 3934 } else if (vha->hw->req_q_map[qid]) { 3935 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3936 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3937 vha->vp_idx, rsp->id, handle); 3938 req = vha->hw->req_q_map[qid]; 3939 } else { 3940 return NULL; 3941 } 3942 3943 h &= QLA_CMD_HANDLE_MASK; 3944 3945 if (h != QLA_TGT_NULL_HANDLE) { 3946 if (unlikely(h >= req->num_outstanding_cmds)) { 3947 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3948 "qla_target(%d): Wrong handle %x received\n", 3949 vha->vp_idx, handle); 3950 return NULL; 3951 } 3952 3953 cmd = req->outstanding_cmds[h]; 3954 if (unlikely(cmd == NULL)) { 3955 ql_dbg(ql_dbg_async, vha, 0xe053, 3956 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3957 vha->vp_idx, handle, req->id, rsp->id); 3958 return NULL; 3959 } 3960 req->outstanding_cmds[h] = NULL; 3961 } else if (ctio != NULL) { 3962 /* We can't get loop ID from CTIO7 */ 3963 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3964 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3965 "support NULL handles\n", vha->vp_idx); 3966 return NULL; 3967 } 3968 3969 return cmd; 3970 } 3971 3972 /* 3973 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3974 */ 3975 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3976 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3977 { 3978 struct qla_hw_data *ha = vha->hw; 3979 struct se_cmd *se_cmd; 3980 struct qla_tgt_cmd *cmd; 3981 struct qla_qpair *qpair = rsp->qpair; 3982 3983 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3984 /* That could happen only in case of an error/reset/abort */ 3985 if (status != CTIO_SUCCESS) { 3986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3987 "Intermediate CTIO received" 3988 " (status %x)\n", status); 3989 } 3990 return; 3991 } 3992 3993 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3994 if (cmd == NULL) 3995 return; 3996 3997 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3998 cmd->sess) { 3999 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 4000 (struct ctio7_from_24xx *)ctio); 4001 } 4002 4003 se_cmd = &cmd->se_cmd; 4004 cmd->cmd_sent_to_fw = 0; 4005 4006 qlt_unmap_sg(vha, cmd); 4007 4008 if (unlikely(status != CTIO_SUCCESS)) { 4009 switch (status & 0xFFFF) { 4010 case CTIO_INVALID_RX_ID: 4011 if (printk_ratelimit()) 4012 dev_info(&vha->hw->pdev->dev, 4013 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4014 vha->vp_idx, cmd->atio.u.isp24.attr, 4015 ((cmd->ctio_flags >> 9) & 0xf), 4016 cmd->ctio_flags); 4017 4018 break; 4019 case CTIO_LIP_RESET: 4020 case CTIO_TARGET_RESET: 4021 case CTIO_ABORTED: 4022 /* driver request abort via Terminate exchange */ 4023 case CTIO_TIMEOUT: 4024 /* They are OK */ 4025 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4026 "qla_target(%d): CTIO with " 4027 "status %#x received, state %x, se_cmd %p, " 4028 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4029 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4030 status, cmd->state, se_cmd); 4031 break; 4032 4033 case CTIO_PORT_LOGGED_OUT: 4034 case CTIO_PORT_UNAVAILABLE: 4035 { 4036 int logged_out = 4037 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4038 4039 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4040 "qla_target(%d): CTIO with %s status %x " 4041 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4042 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4043 status, cmd->state, se_cmd); 4044 4045 if (logged_out && cmd->sess) { 4046 /* 4047 * Session is already logged out, but we need 4048 * to notify initiator, who's not aware of this 4049 */ 4050 cmd->sess->send_els_logo = 1; 4051 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4052 "%s %d %8phC post del sess\n", 4053 __func__, __LINE__, cmd->sess->port_name); 4054 4055 qlt_schedule_sess_for_deletion(cmd->sess); 4056 } 4057 break; 4058 } 4059 case CTIO_DIF_ERROR: { 4060 struct ctio_crc_from_fw *crc = 4061 (struct ctio_crc_from_fw *)ctio; 4062 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4063 "qla_target(%d): CTIO with DIF_ERROR status %x " 4064 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4065 "expect_dif[0x%llx]\n", 4066 vha->vp_idx, status, cmd->state, se_cmd, 4067 *((u64 *)&crc->actual_dif[0]), 4068 *((u64 *)&crc->expected_dif[0])); 4069 4070 qlt_handle_dif_error(qpair, cmd, ctio); 4071 return; 4072 } 4073 4074 case CTIO_FAST_AUTH_ERR: 4075 case CTIO_FAST_INCOMP_PAD_LEN: 4076 case CTIO_FAST_INVALID_REQ: 4077 case CTIO_FAST_SPI_ERR: 4078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4079 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4080 vha->vp_idx, status, cmd->state, se_cmd); 4081 break; 4082 4083 default: 4084 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4085 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4086 vha->vp_idx, status, cmd->state, se_cmd); 4087 break; 4088 } 4089 4090 4091 /* "cmd->aborted" means 4092 * cmd is already aborted/terminated, we don't 4093 * need to terminate again. The exchange is already 4094 * cleaned up/freed at FW level. Just cleanup at driver 4095 * level. 4096 */ 4097 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4098 (!cmd->aborted)) { 4099 cmd->trc_flags |= TRC_CTIO_ERR; 4100 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4101 return; 4102 } 4103 } 4104 4105 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4106 cmd->trc_flags |= TRC_CTIO_DONE; 4107 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4108 cmd->state = QLA_TGT_STATE_DATA_IN; 4109 4110 if (status == CTIO_SUCCESS) 4111 cmd->write_data_transferred = 1; 4112 4113 ha->tgt.tgt_ops->handle_data(cmd); 4114 return; 4115 } else if (cmd->aborted) { 4116 cmd->trc_flags |= TRC_CTIO_ABORTED; 4117 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4118 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4119 } else { 4120 cmd->trc_flags |= TRC_CTIO_STRANGE; 4121 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4122 "qla_target(%d): A command in state (%d) should " 4123 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4124 } 4125 4126 if (unlikely(status != CTIO_SUCCESS) && 4127 !cmd->aborted) { 4128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4129 dump_stack(); 4130 } 4131 4132 ha->tgt.tgt_ops->free_cmd(cmd); 4133 } 4134 4135 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4136 uint8_t task_codes) 4137 { 4138 int fcp_task_attr; 4139 4140 switch (task_codes) { 4141 case ATIO_SIMPLE_QUEUE: 4142 fcp_task_attr = TCM_SIMPLE_TAG; 4143 break; 4144 case ATIO_HEAD_OF_QUEUE: 4145 fcp_task_attr = TCM_HEAD_TAG; 4146 break; 4147 case ATIO_ORDERED_QUEUE: 4148 fcp_task_attr = TCM_ORDERED_TAG; 4149 break; 4150 case ATIO_ACA_QUEUE: 4151 fcp_task_attr = TCM_ACA_TAG; 4152 break; 4153 case ATIO_UNTAGGED: 4154 fcp_task_attr = TCM_SIMPLE_TAG; 4155 break; 4156 default: 4157 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4158 "qla_target: unknown task code %x, use ORDERED instead\n", 4159 task_codes); 4160 fcp_task_attr = TCM_ORDERED_TAG; 4161 break; 4162 } 4163 4164 return fcp_task_attr; 4165 } 4166 4167 /* 4168 * Process context for I/O path into tcm_qla2xxx code 4169 */ 4170 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4171 { 4172 scsi_qla_host_t *vha = cmd->vha; 4173 struct qla_hw_data *ha = vha->hw; 4174 struct fc_port *sess = cmd->sess; 4175 struct atio_from_isp *atio = &cmd->atio; 4176 unsigned char *cdb; 4177 unsigned long flags; 4178 uint32_t data_length; 4179 int ret, fcp_task_attr, data_dir, bidi = 0; 4180 struct qla_qpair *qpair = cmd->qpair; 4181 4182 cmd->cmd_in_wq = 0; 4183 cmd->trc_flags |= TRC_DO_WORK; 4184 4185 if (cmd->aborted) { 4186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4187 "cmd with tag %u is aborted\n", 4188 cmd->atio.u.isp24.exchange_addr); 4189 goto out_term; 4190 } 4191 4192 spin_lock_init(&cmd->cmd_lock); 4193 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4194 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4195 4196 if (atio->u.isp24.fcp_cmnd.rddata && 4197 atio->u.isp24.fcp_cmnd.wrdata) { 4198 bidi = 1; 4199 data_dir = DMA_TO_DEVICE; 4200 } else if (atio->u.isp24.fcp_cmnd.rddata) 4201 data_dir = DMA_FROM_DEVICE; 4202 else if (atio->u.isp24.fcp_cmnd.wrdata) 4203 data_dir = DMA_TO_DEVICE; 4204 else 4205 data_dir = DMA_NONE; 4206 4207 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4208 atio->u.isp24.fcp_cmnd.task_attr); 4209 data_length = get_datalen_for_atio(atio); 4210 4211 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4212 fcp_task_attr, data_dir, bidi); 4213 if (ret != 0) 4214 goto out_term; 4215 /* 4216 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4217 */ 4218 ha->tgt.tgt_ops->put_sess(sess); 4219 return; 4220 4221 out_term: 4222 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4223 /* 4224 * cmd has not sent to target yet, so pass NULL as the second 4225 * argument to qlt_send_term_exchange() and free the memory here. 4226 */ 4227 cmd->trc_flags |= TRC_DO_WORK_ERR; 4228 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4229 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4230 4231 qlt_decr_num_pend_cmds(vha); 4232 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4233 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4234 4235 ha->tgt.tgt_ops->put_sess(sess); 4236 } 4237 4238 static void qlt_do_work(struct work_struct *work) 4239 { 4240 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4241 scsi_qla_host_t *vha = cmd->vha; 4242 unsigned long flags; 4243 4244 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4245 list_del(&cmd->cmd_list); 4246 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4247 4248 __qlt_do_work(cmd); 4249 } 4250 4251 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4252 { 4253 unsigned long flags; 4254 struct qla_hw_data *ha = vha->hw; 4255 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4256 void *node; 4257 u64 key = 0; 4258 4259 ql_log(ql_log_info, vha, 0x706c, 4260 "User update Number of Active Qpairs %d\n", 4261 ha->tgt.num_act_qpairs); 4262 4263 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4264 4265 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4266 btree_remove64(&tgt->lun_qpair_map, key); 4267 4268 ha->base_qpair->lun_cnt = 0; 4269 for (key = 0; key < ha->max_qpairs; key++) 4270 if (ha->queue_pair_map[key]) 4271 ha->queue_pair_map[key]->lun_cnt = 0; 4272 4273 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4274 } 4275 4276 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4277 struct qla_tgt_cmd *cmd) 4278 { 4279 struct qla_qpair *qpair, *qp; 4280 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4281 struct qla_qpair_hint *h; 4282 4283 if (vha->flags.qpairs_available) { 4284 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4285 if (unlikely(!h)) { 4286 /* spread lun to qpair ratio evently */ 4287 int lcnt = 0, rc; 4288 struct scsi_qla_host *base_vha = 4289 pci_get_drvdata(vha->hw->pdev); 4290 4291 qpair = vha->hw->base_qpair; 4292 if (qpair->lun_cnt == 0) { 4293 qpair->lun_cnt++; 4294 h = qla_qpair_to_hint(tgt, qpair); 4295 BUG_ON(!h); 4296 rc = btree_insert64(&tgt->lun_qpair_map, 4297 cmd->unpacked_lun, h, GFP_ATOMIC); 4298 if (rc) { 4299 qpair->lun_cnt--; 4300 ql_log(ql_log_info, vha, 0xd037, 4301 "Unable to insert lun %llx into lun_qpair_map\n", 4302 cmd->unpacked_lun); 4303 } 4304 goto out; 4305 } else { 4306 lcnt = qpair->lun_cnt; 4307 } 4308 4309 h = NULL; 4310 list_for_each_entry(qp, &base_vha->qp_list, 4311 qp_list_elem) { 4312 if (qp->lun_cnt == 0) { 4313 qp->lun_cnt++; 4314 h = qla_qpair_to_hint(tgt, qp); 4315 BUG_ON(!h); 4316 rc = btree_insert64(&tgt->lun_qpair_map, 4317 cmd->unpacked_lun, h, GFP_ATOMIC); 4318 if (rc) { 4319 qp->lun_cnt--; 4320 ql_log(ql_log_info, vha, 0xd038, 4321 "Unable to insert lun %llx into lun_qpair_map\n", 4322 cmd->unpacked_lun); 4323 } 4324 qpair = qp; 4325 goto out; 4326 } else { 4327 if (qp->lun_cnt < lcnt) { 4328 lcnt = qp->lun_cnt; 4329 qpair = qp; 4330 continue; 4331 } 4332 } 4333 } 4334 BUG_ON(!qpair); 4335 qpair->lun_cnt++; 4336 h = qla_qpair_to_hint(tgt, qpair); 4337 BUG_ON(!h); 4338 rc = btree_insert64(&tgt->lun_qpair_map, 4339 cmd->unpacked_lun, h, GFP_ATOMIC); 4340 if (rc) { 4341 qpair->lun_cnt--; 4342 ql_log(ql_log_info, vha, 0xd039, 4343 "Unable to insert lun %llx into lun_qpair_map\n", 4344 cmd->unpacked_lun); 4345 } 4346 } 4347 } else { 4348 h = &tgt->qphints[0]; 4349 } 4350 out: 4351 cmd->qpair = h->qpair; 4352 cmd->se_cmd.cpuid = h->cpuid; 4353 } 4354 4355 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4356 struct fc_port *sess, 4357 struct atio_from_isp *atio) 4358 { 4359 struct qla_tgt_cmd *cmd; 4360 4361 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4362 if (!cmd) 4363 return NULL; 4364 4365 cmd->cmd_type = TYPE_TGT_CMD; 4366 memcpy(&cmd->atio, atio, sizeof(*atio)); 4367 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4368 cmd->state = QLA_TGT_STATE_NEW; 4369 cmd->tgt = vha->vha_tgt.qla_tgt; 4370 qlt_incr_num_pend_cmds(vha); 4371 cmd->vha = vha; 4372 cmd->sess = sess; 4373 cmd->loop_id = sess->loop_id; 4374 cmd->conf_compl_supported = sess->conf_compl_supported; 4375 4376 cmd->trc_flags = 0; 4377 cmd->jiffies_at_alloc = get_jiffies_64(); 4378 4379 cmd->unpacked_lun = scsilun_to_int( 4380 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4381 qlt_assign_qpair(vha, cmd); 4382 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4383 cmd->vp_idx = vha->vp_idx; 4384 cmd->edif = sess->edif.enable; 4385 4386 return cmd; 4387 } 4388 4389 /* ha->hardware_lock supposed to be held on entry */ 4390 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4391 struct atio_from_isp *atio) 4392 { 4393 struct qla_hw_data *ha = vha->hw; 4394 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4395 struct fc_port *sess; 4396 struct qla_tgt_cmd *cmd; 4397 unsigned long flags; 4398 port_id_t id; 4399 4400 if (unlikely(tgt->tgt_stop)) { 4401 ql_dbg(ql_dbg_io, vha, 0x3061, 4402 "New command while device %p is shutting down\n", tgt); 4403 return -ENODEV; 4404 } 4405 4406 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4407 if (IS_SW_RESV_ADDR(id)) 4408 return -EBUSY; 4409 4410 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4411 if (unlikely(!sess)) 4412 return -EFAULT; 4413 4414 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4415 * session deletion, but it's still in sess_del_work wq */ 4416 if (sess->deleted) { 4417 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4418 "New command while old session %p is being deleted\n", 4419 sess); 4420 return -EFAULT; 4421 } 4422 4423 /* 4424 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4425 */ 4426 if (!kref_get_unless_zero(&sess->sess_kref)) { 4427 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4428 "%s: kref_get fail, %8phC oxid %x \n", 4429 __func__, sess->port_name, 4430 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4431 return -EFAULT; 4432 } 4433 4434 cmd = qlt_get_tag(vha, sess, atio); 4435 if (!cmd) { 4436 ql_dbg(ql_dbg_io, vha, 0x3062, 4437 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4438 ha->tgt.tgt_ops->put_sess(sess); 4439 return -EBUSY; 4440 } 4441 4442 cmd->cmd_in_wq = 1; 4443 cmd->trc_flags |= TRC_NEW_CMD; 4444 4445 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4446 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4447 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4448 4449 INIT_WORK(&cmd->work, qlt_do_work); 4450 if (vha->flags.qpairs_available) { 4451 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4452 } else if (ha->msix_count) { 4453 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4454 queue_work_on(smp_processor_id(), qla_tgt_wq, 4455 &cmd->work); 4456 else 4457 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4458 &cmd->work); 4459 } else { 4460 queue_work(qla_tgt_wq, &cmd->work); 4461 } 4462 4463 return 0; 4464 } 4465 4466 /* ha->hardware_lock supposed to be held on entry */ 4467 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4468 int fn, void *iocb, int flags) 4469 { 4470 struct scsi_qla_host *vha = sess->vha; 4471 struct qla_hw_data *ha = vha->hw; 4472 struct qla_tgt_mgmt_cmd *mcmd; 4473 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4474 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4475 4476 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4477 if (!mcmd) { 4478 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4479 "qla_target(%d): Allocation of management " 4480 "command failed, some commands and their data could " 4481 "leak\n", vha->vp_idx); 4482 return -ENOMEM; 4483 } 4484 memset(mcmd, 0, sizeof(*mcmd)); 4485 mcmd->sess = sess; 4486 4487 if (iocb) { 4488 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4489 sizeof(mcmd->orig_iocb.imm_ntfy)); 4490 } 4491 mcmd->tmr_func = fn; 4492 mcmd->flags = flags; 4493 mcmd->reset_count = ha->base_qpair->chip_reset; 4494 mcmd->qpair = h->qpair; 4495 mcmd->vha = vha; 4496 mcmd->se_cmd.cpuid = h->cpuid; 4497 mcmd->unpacked_lun = lun; 4498 4499 switch (fn) { 4500 case QLA_TGT_LUN_RESET: 4501 case QLA_TGT_CLEAR_TS: 4502 case QLA_TGT_ABORT_TS: 4503 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4504 fallthrough; 4505 case QLA_TGT_CLEAR_ACA: 4506 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4507 mcmd->qpair = h->qpair; 4508 mcmd->se_cmd.cpuid = h->cpuid; 4509 break; 4510 4511 case QLA_TGT_TARGET_RESET: 4512 case QLA_TGT_NEXUS_LOSS_SESS: 4513 case QLA_TGT_NEXUS_LOSS: 4514 case QLA_TGT_ABORT_ALL: 4515 default: 4516 /* no-op */ 4517 break; 4518 } 4519 4520 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4521 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4522 &mcmd->work); 4523 4524 return 0; 4525 } 4526 4527 /* ha->hardware_lock supposed to be held on entry */ 4528 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4529 { 4530 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4531 struct qla_hw_data *ha = vha->hw; 4532 struct fc_port *sess; 4533 u64 unpacked_lun; 4534 int fn; 4535 unsigned long flags; 4536 4537 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4538 4539 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4540 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4541 a->u.isp24.fcp_hdr.s_id); 4542 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4543 4544 unpacked_lun = 4545 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4546 4547 if (sess == NULL || sess->deleted) 4548 return -EFAULT; 4549 4550 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4551 } 4552 4553 /* ha->hardware_lock supposed to be held on entry */ 4554 static int __qlt_abort_task(struct scsi_qla_host *vha, 4555 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4556 { 4557 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4558 struct qla_hw_data *ha = vha->hw; 4559 struct qla_tgt_mgmt_cmd *mcmd; 4560 u64 unpacked_lun; 4561 int rc; 4562 4563 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4564 if (mcmd == NULL) { 4565 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4566 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4567 vha->vp_idx, __func__); 4568 return -ENOMEM; 4569 } 4570 memset(mcmd, 0, sizeof(*mcmd)); 4571 4572 mcmd->sess = sess; 4573 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4574 sizeof(mcmd->orig_iocb.imm_ntfy)); 4575 4576 unpacked_lun = 4577 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4578 mcmd->reset_count = ha->base_qpair->chip_reset; 4579 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4580 mcmd->qpair = ha->base_qpair; 4581 4582 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4583 le16_to_cpu(iocb->u.isp2x.seq_id)); 4584 if (rc != 0) { 4585 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4586 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4587 vha->vp_idx, rc); 4588 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4589 return -EFAULT; 4590 } 4591 4592 return 0; 4593 } 4594 4595 /* ha->hardware_lock supposed to be held on entry */ 4596 static int qlt_abort_task(struct scsi_qla_host *vha, 4597 struct imm_ntfy_from_isp *iocb) 4598 { 4599 struct qla_hw_data *ha = vha->hw; 4600 struct fc_port *sess; 4601 int loop_id; 4602 unsigned long flags; 4603 4604 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4605 4606 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4607 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4608 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4609 4610 if (sess == NULL) { 4611 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4612 "qla_target(%d): task abort for unexisting " 4613 "session\n", vha->vp_idx); 4614 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4615 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4616 } 4617 4618 return __qlt_abort_task(vha, iocb, sess); 4619 } 4620 4621 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4622 { 4623 if (rc != MBS_COMMAND_COMPLETE) { 4624 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4625 "%s: se_sess %p / sess %p from" 4626 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4627 " LOGO failed: %#x\n", 4628 __func__, 4629 fcport->se_sess, 4630 fcport, 4631 fcport->port_name, fcport->loop_id, 4632 fcport->d_id.b.domain, fcport->d_id.b.area, 4633 fcport->d_id.b.al_pa, rc); 4634 } 4635 4636 fcport->logout_completed = 1; 4637 } 4638 4639 /* 4640 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4641 * 4642 * Schedules sessions with matching port_id/loop_id but different wwn for 4643 * deletion. Returns existing session with matching wwn if present. 4644 * Null otherwise. 4645 */ 4646 struct fc_port * 4647 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4648 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4649 { 4650 struct fc_port *sess = NULL, *other_sess; 4651 uint64_t other_wwn; 4652 4653 *conflict_sess = NULL; 4654 4655 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4656 4657 other_wwn = wwn_to_u64(other_sess->port_name); 4658 4659 if (wwn == other_wwn) { 4660 WARN_ON(sess); 4661 sess = other_sess; 4662 continue; 4663 } 4664 4665 /* find other sess with nport_id collision */ 4666 if (port_id.b24 == other_sess->d_id.b24) { 4667 if (loop_id != other_sess->loop_id) { 4668 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4669 "Invalidating sess %p loop_id %d wwn %llx.\n", 4670 other_sess, other_sess->loop_id, other_wwn); 4671 4672 /* 4673 * logout_on_delete is set by default, but another 4674 * session that has the same s_id/loop_id combo 4675 * might have cleared it when requested this session 4676 * deletion, so don't touch it 4677 */ 4678 qlt_schedule_sess_for_deletion(other_sess); 4679 } else { 4680 /* 4681 * Another wwn used to have our s_id/loop_id 4682 * kill the session, but don't free the loop_id 4683 */ 4684 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4685 "Invalidating sess %p loop_id %d wwn %llx.\n", 4686 other_sess, other_sess->loop_id, other_wwn); 4687 4688 other_sess->keep_nport_handle = 1; 4689 if (other_sess->disc_state != DSC_DELETED) 4690 *conflict_sess = other_sess; 4691 qlt_schedule_sess_for_deletion(other_sess); 4692 } 4693 continue; 4694 } 4695 4696 /* find other sess with nport handle collision */ 4697 if ((loop_id == other_sess->loop_id) && 4698 (loop_id != FC_NO_LOOP_ID)) { 4699 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4700 "Invalidating sess %p loop_id %d wwn %llx.\n", 4701 other_sess, other_sess->loop_id, other_wwn); 4702 4703 /* Same loop_id but different s_id 4704 * Ok to kill and logout */ 4705 qlt_schedule_sess_for_deletion(other_sess); 4706 } 4707 } 4708 4709 return sess; 4710 } 4711 4712 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4713 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4714 { 4715 struct qla_tgt_sess_op *op; 4716 struct qla_tgt_cmd *cmd; 4717 uint32_t key; 4718 int count = 0; 4719 unsigned long flags; 4720 4721 key = (((u32)s_id->b.domain << 16) | 4722 ((u32)s_id->b.area << 8) | 4723 ((u32)s_id->b.al_pa)); 4724 4725 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4726 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4727 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4728 4729 if (op_key == key) { 4730 op->aborted = true; 4731 count++; 4732 } 4733 } 4734 4735 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4736 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4737 4738 if (op_key == key) { 4739 op->aborted = true; 4740 count++; 4741 } 4742 } 4743 4744 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4745 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4746 4747 if (cmd_key == key) { 4748 cmd->aborted = 1; 4749 count++; 4750 } 4751 } 4752 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4753 4754 return count; 4755 } 4756 4757 static int qlt_handle_login(struct scsi_qla_host *vha, 4758 struct imm_ntfy_from_isp *iocb) 4759 { 4760 struct fc_port *sess = NULL, *conflict_sess = NULL; 4761 uint64_t wwn; 4762 port_id_t port_id; 4763 uint16_t loop_id, wd3_lo; 4764 int res = 0; 4765 struct qlt_plogi_ack_t *pla; 4766 unsigned long flags; 4767 4768 lockdep_assert_held(&vha->hw->hardware_lock); 4769 4770 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4771 4772 port_id.b.domain = iocb->u.isp24.port_id[2]; 4773 port_id.b.area = iocb->u.isp24.port_id[1]; 4774 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4775 port_id.b.rsvd_1 = 0; 4776 4777 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4778 4779 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4780 abort_cmds_for_s_id(vha, &port_id); 4781 4782 if (wwn) { 4783 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4784 sess = qlt_find_sess_invalidate_other(vha, wwn, 4785 port_id, loop_id, &conflict_sess); 4786 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4787 } else { 4788 ql_dbg(ql_dbg_disc, vha, 0xffff, 4789 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4790 __func__, __LINE__, loop_id, port_id.b24); 4791 qlt_send_term_imm_notif(vha, iocb, 1); 4792 goto out; 4793 } 4794 4795 if (IS_SW_RESV_ADDR(port_id)) { 4796 res = 1; 4797 goto out; 4798 } 4799 4800 if (vha->hw->flags.edif_enabled && 4801 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4802 iocb->u.isp24.status_subcode == ELS_PLOGI && 4803 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4804 ql_dbg(ql_dbg_disc, vha, 0xffff, 4805 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4806 __func__, __LINE__, loop_id, port_id.b24); 4807 qlt_send_term_imm_notif(vha, iocb, 1); 4808 goto out; 4809 } 4810 4811 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4812 if (!pla) { 4813 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4814 "%s %d %8phC Term INOT due to mem alloc fail", 4815 __func__, __LINE__, 4816 iocb->u.isp24.port_name); 4817 qlt_send_term_imm_notif(vha, iocb, 1); 4818 goto out; 4819 } 4820 4821 if (conflict_sess) { 4822 conflict_sess->login_gen++; 4823 qlt_plogi_ack_link(vha, pla, conflict_sess, 4824 QLT_PLOGI_LINK_CONFLICT); 4825 } 4826 4827 if (!sess) { 4828 pla->ref_count++; 4829 ql_dbg(ql_dbg_disc, vha, 0xffff, 4830 "%s %d %8phC post new sess\n", 4831 __func__, __LINE__, iocb->u.isp24.port_name); 4832 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4833 qla24xx_post_newsess_work(vha, &port_id, 4834 iocb->u.isp24.port_name, 4835 iocb->u.isp24.u.plogi.node_name, 4836 pla, 0); 4837 else 4838 qla24xx_post_newsess_work(vha, &port_id, 4839 iocb->u.isp24.port_name, NULL, 4840 pla, 0); 4841 4842 goto out; 4843 } 4844 4845 if (sess->disc_state == DSC_UPD_FCPORT) { 4846 u16 sec; 4847 4848 /* 4849 * Remote port registration is still going on from 4850 * previous login. Allow it to finish before we 4851 * accept the new login. 4852 */ 4853 sess->next_disc_state = DSC_DELETE_PEND; 4854 sec = jiffies_to_msecs(jiffies - 4855 sess->jiffies_at_registration) / 1000; 4856 if (sess->sec_since_registration < sec && sec && 4857 !(sec % 5)) { 4858 sess->sec_since_registration = sec; 4859 ql_dbg(ql_dbg_disc, vha, 0xffff, 4860 "%s %8phC - Slow Rport registration (%d Sec)\n", 4861 __func__, sess->port_name, sec); 4862 } 4863 4864 if (!conflict_sess) { 4865 list_del(&pla->list); 4866 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4867 } 4868 4869 qlt_send_term_imm_notif(vha, iocb, 1); 4870 goto out; 4871 } 4872 4873 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4874 sess->d_id = port_id; 4875 sess->login_gen++; 4876 sess->loop_id = loop_id; 4877 4878 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4879 ql_dbg(ql_dbg_disc, vha, 0xffff, 4880 "%s %8phC - send port online\n", 4881 __func__, sess->port_name); 4882 4883 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4884 sess->d_id.b24); 4885 } 4886 4887 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4888 sess->fw_login_state = DSC_LS_PRLI_PEND; 4889 sess->local = 0; 4890 sess->loop_id = loop_id; 4891 sess->d_id = port_id; 4892 sess->fw_login_state = DSC_LS_PRLI_PEND; 4893 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4894 4895 if (wd3_lo & BIT_7) 4896 sess->conf_compl_supported = 1; 4897 4898 if ((wd3_lo & BIT_4) == 0) 4899 sess->port_type = FCT_INITIATOR; 4900 else 4901 sess->port_type = FCT_TARGET; 4902 4903 } else 4904 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4905 4906 4907 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4908 "%s %d %8phC DS %d\n", 4909 __func__, __LINE__, sess->port_name, sess->disc_state); 4910 4911 switch (sess->disc_state) { 4912 case DSC_DELETED: 4913 case DSC_LOGIN_PEND: 4914 qlt_plogi_ack_unref(vha, pla); 4915 break; 4916 4917 default: 4918 /* 4919 * Under normal circumstances we want to release nport handle 4920 * during LOGO process to avoid nport handle leaks inside FW. 4921 * The exception is when LOGO is done while another PLOGI with 4922 * the same nport handle is waiting as might be the case here. 4923 * Note: there is always a possibily of a race where session 4924 * deletion has already started for other reasons (e.g. ACL 4925 * removal) and now PLOGI arrives: 4926 * 1. if PLOGI arrived in FW after nport handle has been freed, 4927 * FW must have assigned this PLOGI a new/same handle and we 4928 * can proceed ACK'ing it as usual when session deletion 4929 * completes. 4930 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4931 * bit reached it, the handle has now been released. We'll 4932 * get an error when we ACK this PLOGI. Nothing will be sent 4933 * back to initiator. Initiator should eventually retry 4934 * PLOGI and situation will correct itself. 4935 */ 4936 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4937 (sess->d_id.b24 == port_id.b24)); 4938 4939 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4940 "%s %d %8phC post del sess\n", 4941 __func__, __LINE__, sess->port_name); 4942 4943 4944 qlt_schedule_sess_for_deletion(sess); 4945 break; 4946 } 4947 out: 4948 return res; 4949 } 4950 4951 /* 4952 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4953 */ 4954 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4955 struct imm_ntfy_from_isp *iocb) 4956 { 4957 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4958 struct qla_hw_data *ha = vha->hw; 4959 struct fc_port *sess = NULL, *conflict_sess = NULL; 4960 uint64_t wwn; 4961 port_id_t port_id; 4962 uint16_t loop_id; 4963 uint16_t wd3_lo; 4964 int res = 0; 4965 unsigned long flags; 4966 4967 lockdep_assert_held(&ha->hardware_lock); 4968 4969 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4970 4971 port_id.b.domain = iocb->u.isp24.port_id[2]; 4972 port_id.b.area = iocb->u.isp24.port_id[1]; 4973 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4974 port_id.b.rsvd_1 = 0; 4975 4976 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4977 4978 ql_dbg(ql_dbg_disc, vha, 0xf026, 4979 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4980 vha->vp_idx, iocb->u.isp24.port_id[2], 4981 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4982 iocb->u.isp24.status_subcode, loop_id, 4983 iocb->u.isp24.port_name); 4984 4985 /* res = 1 means ack at the end of thread 4986 * res = 0 means ack async/later. 4987 */ 4988 switch (iocb->u.isp24.status_subcode) { 4989 case ELS_PLOGI: 4990 res = qlt_handle_login(vha, iocb); 4991 break; 4992 4993 case ELS_PRLI: 4994 if (N2N_TOPO(ha)) { 4995 sess = qla2x00_find_fcport_by_wwpn(vha, 4996 iocb->u.isp24.port_name, 1); 4997 4998 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4999 ql_dbg(ql_dbg_disc, vha, 0xffff, 5000 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5001 __func__, __LINE__, 5002 iocb->u.isp24.port_name); 5003 qlt_send_term_imm_notif(vha, iocb, 1); 5004 break; 5005 } 5006 5007 res = qlt_handle_login(vha, iocb); 5008 break; 5009 } 5010 5011 if (IS_SW_RESV_ADDR(port_id)) { 5012 res = 1; 5013 break; 5014 } 5015 5016 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5017 5018 if (wwn) { 5019 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5020 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5021 loop_id, &conflict_sess); 5022 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5023 } 5024 5025 if (conflict_sess) { 5026 switch (conflict_sess->disc_state) { 5027 case DSC_DELETED: 5028 case DSC_DELETE_PEND: 5029 break; 5030 default: 5031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5032 "PRLI with conflicting sess %p port %8phC\n", 5033 conflict_sess, conflict_sess->port_name); 5034 conflict_sess->fw_login_state = 5035 DSC_LS_PORT_UNAVAIL; 5036 qlt_send_term_imm_notif(vha, iocb, 1); 5037 res = 0; 5038 break; 5039 } 5040 } 5041 5042 if (sess != NULL) { 5043 bool delete = false; 5044 int sec; 5045 5046 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5047 switch (sess->fw_login_state) { 5048 case DSC_LS_PLOGI_PEND: 5049 case DSC_LS_PLOGI_COMP: 5050 case DSC_LS_PRLI_COMP: 5051 break; 5052 default: 5053 delete = true; 5054 break; 5055 } 5056 5057 switch (sess->disc_state) { 5058 case DSC_UPD_FCPORT: 5059 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5060 flags); 5061 5062 sec = jiffies_to_msecs(jiffies - 5063 sess->jiffies_at_registration)/1000; 5064 if (sess->sec_since_registration < sec && sec && 5065 !(sec % 5)) { 5066 sess->sec_since_registration = sec; 5067 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5068 "%s %8phC : Slow Rport registration(%d Sec)\n", 5069 __func__, sess->port_name, sec); 5070 } 5071 qlt_send_term_imm_notif(vha, iocb, 1); 5072 return 0; 5073 5074 case DSC_LOGIN_PEND: 5075 case DSC_GPDB: 5076 case DSC_LOGIN_COMPLETE: 5077 case DSC_ADISC: 5078 delete = false; 5079 break; 5080 default: 5081 break; 5082 } 5083 5084 if (delete) { 5085 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5086 flags); 5087 /* 5088 * Impatient initiator sent PRLI before last 5089 * PLOGI could finish. Will force him to re-try, 5090 * while last one finishes. 5091 */ 5092 ql_log(ql_log_warn, sess->vha, 0xf095, 5093 "sess %p PRLI received, before plogi ack.\n", 5094 sess); 5095 qlt_send_term_imm_notif(vha, iocb, 1); 5096 res = 0; 5097 break; 5098 } 5099 5100 /* 5101 * This shouldn't happen under normal circumstances, 5102 * since we have deleted the old session during PLOGI 5103 */ 5104 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5105 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5106 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5107 5108 sess->local = 0; 5109 sess->loop_id = loop_id; 5110 sess->d_id = port_id; 5111 sess->fw_login_state = DSC_LS_PRLI_PEND; 5112 5113 if (wd3_lo & BIT_7) 5114 sess->conf_compl_supported = 1; 5115 5116 if ((wd3_lo & BIT_4) == 0) 5117 sess->port_type = FCT_INITIATOR; 5118 else 5119 sess->port_type = FCT_TARGET; 5120 5121 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5122 } 5123 res = 1; /* send notify ack */ 5124 5125 /* Make session global (not used in fabric mode) */ 5126 if (ha->current_topology != ISP_CFG_F) { 5127 if (sess) { 5128 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5129 "%s %d %8phC post nack\n", 5130 __func__, __LINE__, sess->port_name); 5131 qla24xx_post_nack_work(vha, sess, iocb, 5132 SRB_NACK_PRLI); 5133 res = 0; 5134 } else { 5135 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5136 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5137 qla2xxx_wake_dpc(vha); 5138 } 5139 } else { 5140 if (sess) { 5141 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5142 "%s %d %8phC post nack\n", 5143 __func__, __LINE__, sess->port_name); 5144 qla24xx_post_nack_work(vha, sess, iocb, 5145 SRB_NACK_PRLI); 5146 res = 0; 5147 } 5148 } 5149 break; 5150 5151 case ELS_TPRLO: 5152 if (le16_to_cpu(iocb->u.isp24.flags) & 5153 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5154 loop_id = 0xFFFF; 5155 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5156 res = 1; 5157 break; 5158 } 5159 fallthrough; 5160 case ELS_LOGO: 5161 case ELS_PRLO: 5162 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5163 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5164 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5165 5166 if (sess) { 5167 sess->login_gen++; 5168 sess->fw_login_state = DSC_LS_LOGO_PEND; 5169 sess->logo_ack_needed = 1; 5170 memcpy(sess->iocb, iocb, IOCB_SIZE); 5171 } 5172 5173 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5174 5175 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5176 "%s: logo %llx res %d sess %p ", 5177 __func__, wwn, res, sess); 5178 if (res == 0) { 5179 /* 5180 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5181 * for LOGO_ACK & sess delete 5182 */ 5183 BUG_ON(!sess); 5184 res = 0; 5185 } else { 5186 /* cmd did not go to upper layer. */ 5187 if (sess) { 5188 qlt_schedule_sess_for_deletion(sess); 5189 res = 0; 5190 } 5191 /* else logo will be ack */ 5192 } 5193 break; 5194 case ELS_PDISC: 5195 case ELS_ADISC: 5196 { 5197 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5198 5199 if (tgt->link_reinit_iocb_pending) { 5200 qlt_send_notify_ack(ha->base_qpair, 5201 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5202 tgt->link_reinit_iocb_pending = 0; 5203 } 5204 5205 sess = qla2x00_find_fcport_by_wwpn(vha, 5206 iocb->u.isp24.port_name, 1); 5207 if (sess) { 5208 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5209 "sess %p lid %d|%d DS %d LS %d\n", 5210 sess, sess->loop_id, loop_id, 5211 sess->disc_state, sess->fw_login_state); 5212 } 5213 5214 res = 1; /* send notify ack */ 5215 break; 5216 } 5217 5218 case ELS_FLOGI: /* should never happen */ 5219 default: 5220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5221 "qla_target(%d): Unsupported ELS command %x " 5222 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5223 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5224 break; 5225 } 5226 5227 ql_dbg(ql_dbg_disc, vha, 0xf026, 5228 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5229 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5230 5231 return res; 5232 } 5233 5234 /* 5235 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5236 */ 5237 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5238 struct imm_ntfy_from_isp *iocb) 5239 { 5240 struct qla_hw_data *ha = vha->hw; 5241 uint32_t add_flags = 0; 5242 int send_notify_ack = 1; 5243 uint16_t status; 5244 5245 lockdep_assert_held(&ha->hardware_lock); 5246 5247 status = le16_to_cpu(iocb->u.isp2x.status); 5248 switch (status) { 5249 case IMM_NTFY_LIP_RESET: 5250 { 5251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5252 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5253 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5254 iocb->u.isp24.status_subcode); 5255 5256 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5257 send_notify_ack = 0; 5258 break; 5259 } 5260 5261 case IMM_NTFY_LIP_LINK_REINIT: 5262 { 5263 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5264 5265 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5266 "qla_target(%d): LINK REINIT (loop %#x, " 5267 "subcode %x)\n", vha->vp_idx, 5268 le16_to_cpu(iocb->u.isp24.nport_handle), 5269 iocb->u.isp24.status_subcode); 5270 if (tgt->link_reinit_iocb_pending) { 5271 qlt_send_notify_ack(ha->base_qpair, 5272 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5273 } 5274 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5275 tgt->link_reinit_iocb_pending = 1; 5276 /* 5277 * QLogic requires to wait after LINK REINIT for possible 5278 * PDISC or ADISC ELS commands 5279 */ 5280 send_notify_ack = 0; 5281 break; 5282 } 5283 5284 case IMM_NTFY_PORT_LOGOUT: 5285 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5286 "qla_target(%d): Port logout (loop " 5287 "%#x, subcode %x)\n", vha->vp_idx, 5288 le16_to_cpu(iocb->u.isp24.nport_handle), 5289 iocb->u.isp24.status_subcode); 5290 5291 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5292 send_notify_ack = 0; 5293 /* The sessions will be cleared in the callback, if needed */ 5294 break; 5295 5296 case IMM_NTFY_GLBL_TPRLO: 5297 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5298 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5299 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5300 send_notify_ack = 0; 5301 /* The sessions will be cleared in the callback, if needed */ 5302 break; 5303 5304 case IMM_NTFY_PORT_CONFIG: 5305 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5306 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5307 status); 5308 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5309 send_notify_ack = 0; 5310 /* The sessions will be cleared in the callback, if needed */ 5311 break; 5312 5313 case IMM_NTFY_GLBL_LOGO: 5314 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5315 "qla_target(%d): Link failure detected\n", 5316 vha->vp_idx); 5317 /* I_T nexus loss */ 5318 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5319 send_notify_ack = 0; 5320 break; 5321 5322 case IMM_NTFY_IOCB_OVERFLOW: 5323 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5324 "qla_target(%d): Cannot provide requested " 5325 "capability (IOCB overflowed the immediate notify " 5326 "resource count)\n", vha->vp_idx); 5327 break; 5328 5329 case IMM_NTFY_ABORT_TASK: 5330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5331 "qla_target(%d): Abort Task (S %08x I %#x -> " 5332 "L %#x)\n", vha->vp_idx, 5333 le16_to_cpu(iocb->u.isp2x.seq_id), 5334 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5335 le16_to_cpu(iocb->u.isp2x.lun)); 5336 if (qlt_abort_task(vha, iocb) == 0) 5337 send_notify_ack = 0; 5338 break; 5339 5340 case IMM_NTFY_RESOURCE: 5341 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5342 "qla_target(%d): Out of resources, host %ld\n", 5343 vha->vp_idx, vha->host_no); 5344 break; 5345 5346 case IMM_NTFY_MSG_RX: 5347 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5348 "qla_target(%d): Immediate notify task %x\n", 5349 vha->vp_idx, iocb->u.isp2x.task_flags); 5350 break; 5351 5352 case IMM_NTFY_ELS: 5353 if (qlt_24xx_handle_els(vha, iocb) == 0) 5354 send_notify_ack = 0; 5355 break; 5356 default: 5357 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5358 "qla_target(%d): Received unknown immediate " 5359 "notify status %x\n", vha->vp_idx, status); 5360 break; 5361 } 5362 5363 if (send_notify_ack) 5364 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5365 0, 0); 5366 } 5367 5368 /* 5369 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5370 * This function sends busy to ISP 2xxx or 24xx. 5371 */ 5372 static int __qlt_send_busy(struct qla_qpair *qpair, 5373 struct atio_from_isp *atio, uint16_t status) 5374 { 5375 struct scsi_qla_host *vha = qpair->vha; 5376 struct ctio7_to_24xx *ctio24; 5377 struct qla_hw_data *ha = vha->hw; 5378 request_t *pkt; 5379 struct fc_port *sess = NULL; 5380 unsigned long flags; 5381 u16 temp; 5382 port_id_t id; 5383 5384 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5385 5386 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5387 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5388 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5389 if (!sess) { 5390 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5391 return 0; 5392 } 5393 /* Sending marker isn't necessary, since we called from ISR */ 5394 5395 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5396 if (!pkt) { 5397 ql_dbg(ql_dbg_io, vha, 0x3063, 5398 "qla_target(%d): %s failed: unable to allocate " 5399 "request packet", vha->vp_idx, __func__); 5400 return -ENOMEM; 5401 } 5402 5403 qpair->tgt_counters.num_q_full_sent++; 5404 pkt->entry_count = 1; 5405 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5406 5407 ctio24 = (struct ctio7_to_24xx *)pkt; 5408 ctio24->entry_type = CTIO_TYPE7; 5409 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5410 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5411 ctio24->vp_index = vha->vp_idx; 5412 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5413 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5414 temp = (atio->u.isp24.attr << 9) | 5415 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5416 CTIO7_FLAGS_DONT_RET_CTIO; 5417 ctio24->u.status1.flags = cpu_to_le16(temp); 5418 /* 5419 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5420 * if the explicit conformation is used. 5421 */ 5422 ctio24->u.status1.ox_id = 5423 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5424 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5425 5426 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5427 5428 if (ctio24->u.status1.residual != 0) 5429 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5430 5431 /* Memory Barrier */ 5432 wmb(); 5433 if (qpair->reqq_start_iocbs) 5434 qpair->reqq_start_iocbs(qpair); 5435 else 5436 qla2x00_start_iocbs(vha, qpair->req); 5437 return 0; 5438 } 5439 5440 /* 5441 * This routine is used to allocate a command for either a QFull condition 5442 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5443 * out previously. 5444 */ 5445 static void 5446 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5447 struct atio_from_isp *atio, uint16_t status, int qfull) 5448 { 5449 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5450 struct qla_hw_data *ha = vha->hw; 5451 struct fc_port *sess; 5452 struct qla_tgt_cmd *cmd; 5453 unsigned long flags; 5454 5455 if (unlikely(tgt->tgt_stop)) { 5456 ql_dbg(ql_dbg_io, vha, 0x300a, 5457 "New command while device %p is shutting down\n", tgt); 5458 return; 5459 } 5460 5461 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5462 vha->hw->tgt.num_qfull_cmds_dropped++; 5463 if (vha->hw->tgt.num_qfull_cmds_dropped > 5464 vha->qla_stats.stat_max_qfull_cmds_dropped) 5465 vha->qla_stats.stat_max_qfull_cmds_dropped = 5466 vha->hw->tgt.num_qfull_cmds_dropped; 5467 5468 ql_dbg(ql_dbg_io, vha, 0x3068, 5469 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5470 vha->vp_idx, __func__, 5471 vha->hw->tgt.num_qfull_cmds_dropped); 5472 5473 qlt_chk_exch_leak_thresh_hold(vha); 5474 return; 5475 } 5476 5477 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5478 (vha, atio->u.isp24.fcp_hdr.s_id); 5479 if (!sess) 5480 return; 5481 5482 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5483 if (!cmd) { 5484 ql_dbg(ql_dbg_io, vha, 0x3009, 5485 "qla_target(%d): %s: Allocation of cmd failed\n", 5486 vha->vp_idx, __func__); 5487 5488 vha->hw->tgt.num_qfull_cmds_dropped++; 5489 if (vha->hw->tgt.num_qfull_cmds_dropped > 5490 vha->qla_stats.stat_max_qfull_cmds_dropped) 5491 vha->qla_stats.stat_max_qfull_cmds_dropped = 5492 vha->hw->tgt.num_qfull_cmds_dropped; 5493 5494 qlt_chk_exch_leak_thresh_hold(vha); 5495 return; 5496 } 5497 5498 qlt_incr_num_pend_cmds(vha); 5499 INIT_LIST_HEAD(&cmd->cmd_list); 5500 memcpy(&cmd->atio, atio, sizeof(*atio)); 5501 5502 cmd->tgt = vha->vha_tgt.qla_tgt; 5503 cmd->vha = vha; 5504 cmd->reset_count = ha->base_qpair->chip_reset; 5505 cmd->q_full = 1; 5506 cmd->qpair = ha->base_qpair; 5507 5508 if (qfull) { 5509 cmd->q_full = 1; 5510 /* NOTE: borrowing the state field to carry the status */ 5511 cmd->state = status; 5512 } else 5513 cmd->term_exchg = 1; 5514 5515 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5516 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5517 5518 vha->hw->tgt.num_qfull_cmds_alloc++; 5519 if (vha->hw->tgt.num_qfull_cmds_alloc > 5520 vha->qla_stats.stat_max_qfull_cmds_alloc) 5521 vha->qla_stats.stat_max_qfull_cmds_alloc = 5522 vha->hw->tgt.num_qfull_cmds_alloc; 5523 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5524 } 5525 5526 int 5527 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5528 { 5529 struct scsi_qla_host *vha = qpair->vha; 5530 struct qla_hw_data *ha = vha->hw; 5531 unsigned long flags; 5532 struct qla_tgt_cmd *cmd, *tcmd; 5533 struct list_head free_list, q_full_list; 5534 int rc = 0; 5535 5536 if (list_empty(&ha->tgt.q_full_list)) 5537 return 0; 5538 5539 INIT_LIST_HEAD(&free_list); 5540 INIT_LIST_HEAD(&q_full_list); 5541 5542 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5543 if (list_empty(&ha->tgt.q_full_list)) { 5544 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5545 return 0; 5546 } 5547 5548 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5549 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5550 5551 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5552 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5553 if (cmd->q_full) 5554 /* cmd->state is a borrowed field to hold status */ 5555 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5556 else if (cmd->term_exchg) 5557 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5558 5559 if (rc == -ENOMEM) 5560 break; 5561 5562 if (cmd->q_full) 5563 ql_dbg(ql_dbg_io, vha, 0x3006, 5564 "%s: busy sent for ox_id[%04x]\n", __func__, 5565 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5566 else if (cmd->term_exchg) 5567 ql_dbg(ql_dbg_io, vha, 0x3007, 5568 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5569 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5570 else 5571 ql_dbg(ql_dbg_io, vha, 0x3008, 5572 "%s: Unexpected cmd in QFull list %p\n", __func__, 5573 cmd); 5574 5575 list_move_tail(&cmd->cmd_list, &free_list); 5576 5577 /* piggy back on hardware_lock for protection */ 5578 vha->hw->tgt.num_qfull_cmds_alloc--; 5579 } 5580 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5581 5582 cmd = NULL; 5583 5584 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5585 list_del(&cmd->cmd_list); 5586 /* This cmd was never sent to TCM. There is no need 5587 * to schedule free or call free_cmd 5588 */ 5589 qlt_free_cmd(cmd); 5590 } 5591 5592 if (!list_empty(&q_full_list)) { 5593 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5594 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5595 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5596 } 5597 5598 return rc; 5599 } 5600 5601 static void 5602 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5603 uint16_t status) 5604 { 5605 int rc = 0; 5606 struct scsi_qla_host *vha = qpair->vha; 5607 5608 rc = __qlt_send_busy(qpair, atio, status); 5609 if (rc == -ENOMEM) 5610 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5611 } 5612 5613 static int 5614 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5615 struct atio_from_isp *atio, uint8_t ha_locked) 5616 { 5617 struct qla_hw_data *ha = vha->hw; 5618 unsigned long flags; 5619 5620 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5621 return 0; 5622 5623 if (!ha_locked) 5624 spin_lock_irqsave(&ha->hardware_lock, flags); 5625 qlt_send_busy(qpair, atio, qla_sam_status); 5626 if (!ha_locked) 5627 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5628 5629 return 1; 5630 } 5631 5632 /* ha->hardware_lock supposed to be held on entry */ 5633 /* called via callback from qla2xxx */ 5634 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5635 struct atio_from_isp *atio, uint8_t ha_locked) 5636 { 5637 struct qla_hw_data *ha = vha->hw; 5638 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5639 int rc; 5640 unsigned long flags = 0; 5641 5642 if (unlikely(tgt == NULL)) { 5643 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5644 "ATIO pkt, but no tgt (ha %p)", ha); 5645 return; 5646 } 5647 /* 5648 * In tgt_stop mode we also should allow all requests to pass. 5649 * Otherwise, some commands can stuck. 5650 */ 5651 5652 tgt->atio_irq_cmd_count++; 5653 5654 switch (atio->u.raw.entry_type) { 5655 case ATIO_TYPE7: 5656 if (unlikely(atio->u.isp24.exchange_addr == 5657 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5658 ql_dbg(ql_dbg_io, vha, 0x3065, 5659 "qla_target(%d): ATIO_TYPE7 " 5660 "received with UNKNOWN exchange address, " 5661 "sending QUEUE_FULL\n", vha->vp_idx); 5662 if (!ha_locked) 5663 spin_lock_irqsave(&ha->hardware_lock, flags); 5664 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5665 if (!ha_locked) 5666 spin_unlock_irqrestore(&ha->hardware_lock, 5667 flags); 5668 break; 5669 } 5670 5671 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5672 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5673 atio, ha_locked); 5674 if (rc != 0) { 5675 tgt->atio_irq_cmd_count--; 5676 return; 5677 } 5678 rc = qlt_handle_cmd_for_atio(vha, atio); 5679 } else { 5680 rc = qlt_handle_task_mgmt(vha, atio); 5681 } 5682 if (unlikely(rc != 0)) { 5683 if (!ha_locked) 5684 spin_lock_irqsave(&ha->hardware_lock, flags); 5685 switch (rc) { 5686 case -ENODEV: 5687 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5688 "qla_target: Unable to send command to target\n"); 5689 break; 5690 case -EBADF: 5691 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5692 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5693 qlt_send_term_exchange(ha->base_qpair, NULL, 5694 atio, 1, 0); 5695 break; 5696 case -EBUSY: 5697 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5698 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5699 vha->vp_idx); 5700 qlt_send_busy(ha->base_qpair, atio, 5701 tc_sam_status); 5702 break; 5703 default: 5704 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5705 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5706 vha->vp_idx); 5707 qlt_send_busy(ha->base_qpair, atio, 5708 qla_sam_status); 5709 break; 5710 } 5711 if (!ha_locked) 5712 spin_unlock_irqrestore(&ha->hardware_lock, 5713 flags); 5714 } 5715 break; 5716 5717 case IMMED_NOTIFY_TYPE: 5718 { 5719 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5720 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5721 "qla_target(%d): Received ATIO packet %x " 5722 "with error status %x\n", vha->vp_idx, 5723 atio->u.raw.entry_type, 5724 atio->u.isp2x.entry_status); 5725 break; 5726 } 5727 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5728 5729 if (!ha_locked) 5730 spin_lock_irqsave(&ha->hardware_lock, flags); 5731 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5732 if (!ha_locked) 5733 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5734 break; 5735 } 5736 5737 default: 5738 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5739 "qla_target(%d): Received unknown ATIO atio " 5740 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5741 break; 5742 } 5743 5744 tgt->atio_irq_cmd_count--; 5745 } 5746 5747 /* 5748 * qpair lock is assume to be held 5749 * rc = 0 : send terminate & abts respond 5750 * rc != 0: do not send term & abts respond 5751 */ 5752 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5753 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5754 { 5755 struct qla_hw_data *ha = vha->hw; 5756 int rc = 0; 5757 5758 /* 5759 * Detect unresolved exchange. If the same ABTS is unable 5760 * to terminate an existing command and the same ABTS loops 5761 * between FW & Driver, then force FW dump. Under 1 jiff, 5762 * we should see multiple loops. 5763 */ 5764 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5765 qpair->retry_term_jiff == jiffies) { 5766 /* found existing exchange */ 5767 qpair->retry_term_cnt++; 5768 if (qpair->retry_term_cnt >= 5) { 5769 rc = -EIO; 5770 qpair->retry_term_cnt = 0; 5771 ql_log(ql_log_warn, vha, 0xffff, 5772 "Unable to send ABTS Respond. Dumping firmware.\n"); 5773 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5774 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5775 5776 if (qpair == ha->base_qpair) 5777 ha->isp_ops->fw_dump(vha); 5778 else 5779 qla2xxx_dump_fw(vha); 5780 5781 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5782 qla2xxx_wake_dpc(vha); 5783 } 5784 } else if (qpair->retry_term_jiff != jiffies) { 5785 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5786 qpair->retry_term_cnt = 0; 5787 qpair->retry_term_jiff = jiffies; 5788 } 5789 5790 return rc; 5791 } 5792 5793 5794 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5795 struct rsp_que *rsp, response_t *pkt) 5796 { 5797 struct abts_resp_from_24xx_fw *entry = 5798 (struct abts_resp_from_24xx_fw *)pkt; 5799 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5800 struct qla_tgt_mgmt_cmd *mcmd; 5801 struct qla_hw_data *ha = vha->hw; 5802 5803 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5804 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5805 ql_dbg(ql_dbg_async, vha, 0xe064, 5806 "qla_target(%d): ABTS Comp without mcmd\n", 5807 vha->vp_idx); 5808 return; 5809 } 5810 5811 if (mcmd) 5812 vha = mcmd->vha; 5813 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5814 5815 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5816 "ABTS_RESP_24XX: compl_status %x\n", 5817 entry->compl_status); 5818 5819 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5820 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5821 le32_to_cpu(entry->error_subcode2) == 0) { 5822 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5823 ha->tgt.tgt_ops->free_mcmd(mcmd); 5824 return; 5825 } 5826 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5827 pkt, mcmd); 5828 } else { 5829 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5830 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5831 vha->vp_idx, entry->compl_status, 5832 entry->error_subcode1, 5833 entry->error_subcode2); 5834 ha->tgt.tgt_ops->free_mcmd(mcmd); 5835 } 5836 } else if (mcmd) { 5837 ha->tgt.tgt_ops->free_mcmd(mcmd); 5838 } 5839 } 5840 5841 /* ha->hardware_lock supposed to be held on entry */ 5842 /* called via callback from qla2xxx */ 5843 static void qlt_response_pkt(struct scsi_qla_host *vha, 5844 struct rsp_que *rsp, response_t *pkt) 5845 { 5846 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5847 5848 if (unlikely(tgt == NULL)) { 5849 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5850 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5851 vha->vp_idx, pkt->entry_type, vha->hw); 5852 return; 5853 } 5854 5855 /* 5856 * In tgt_stop mode we also should allow all requests to pass. 5857 * Otherwise, some commands can stuck. 5858 */ 5859 5860 switch (pkt->entry_type) { 5861 case CTIO_CRC2: 5862 case CTIO_TYPE7: 5863 { 5864 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5865 5866 qlt_do_ctio_completion(vha, rsp, entry->handle, 5867 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5868 entry); 5869 break; 5870 } 5871 5872 case ACCEPT_TGT_IO_TYPE: 5873 { 5874 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5875 int rc; 5876 5877 if (atio->u.isp2x.status != 5878 cpu_to_le16(ATIO_CDB_VALID)) { 5879 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5880 "qla_target(%d): ATIO with error " 5881 "status %x received\n", vha->vp_idx, 5882 le16_to_cpu(atio->u.isp2x.status)); 5883 break; 5884 } 5885 5886 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5887 if (rc != 0) 5888 return; 5889 5890 rc = qlt_handle_cmd_for_atio(vha, atio); 5891 if (unlikely(rc != 0)) { 5892 switch (rc) { 5893 case -ENODEV: 5894 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5895 "qla_target: Unable to send command to target\n"); 5896 break; 5897 case -EBADF: 5898 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5899 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5900 qlt_send_term_exchange(rsp->qpair, NULL, 5901 atio, 1, 0); 5902 break; 5903 case -EBUSY: 5904 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5905 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5906 vha->vp_idx); 5907 qlt_send_busy(rsp->qpair, atio, 5908 tc_sam_status); 5909 break; 5910 default: 5911 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5912 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5913 vha->vp_idx); 5914 qlt_send_busy(rsp->qpair, atio, 5915 qla_sam_status); 5916 break; 5917 } 5918 } 5919 } 5920 break; 5921 5922 case CONTINUE_TGT_IO_TYPE: 5923 { 5924 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5925 5926 qlt_do_ctio_completion(vha, rsp, entry->handle, 5927 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5928 entry); 5929 break; 5930 } 5931 5932 case CTIO_A64_TYPE: 5933 { 5934 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5935 5936 qlt_do_ctio_completion(vha, rsp, entry->handle, 5937 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5938 entry); 5939 break; 5940 } 5941 5942 case IMMED_NOTIFY_TYPE: 5943 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5944 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5945 break; 5946 5947 case NOTIFY_ACK_TYPE: 5948 if (tgt->notify_ack_expected > 0) { 5949 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5950 5951 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5952 "NOTIFY_ACK seq %08x status %x\n", 5953 le16_to_cpu(entry->u.isp2x.seq_id), 5954 le16_to_cpu(entry->u.isp2x.status)); 5955 tgt->notify_ack_expected--; 5956 if (entry->u.isp2x.status != 5957 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5958 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5959 "qla_target(%d): NOTIFY_ACK " 5960 "failed %x\n", vha->vp_idx, 5961 le16_to_cpu(entry->u.isp2x.status)); 5962 } 5963 } else { 5964 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5965 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5966 vha->vp_idx); 5967 } 5968 break; 5969 5970 case ABTS_RECV_24XX: 5971 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5972 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5973 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5974 break; 5975 5976 case ABTS_RESP_24XX: 5977 if (tgt->abts_resp_expected > 0) { 5978 qlt_handle_abts_completion(vha, rsp, pkt); 5979 } else { 5980 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5981 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5982 "received\n", vha->vp_idx); 5983 } 5984 break; 5985 5986 default: 5987 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5988 "qla_target(%d): Received unknown response pkt " 5989 "type %x\n", vha->vp_idx, pkt->entry_type); 5990 break; 5991 } 5992 5993 } 5994 5995 /* 5996 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5997 */ 5998 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5999 uint16_t *mailbox) 6000 { 6001 struct qla_hw_data *ha = vha->hw; 6002 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6003 int login_code; 6004 6005 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6006 return; 6007 6008 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6009 IS_QLA2100(ha)) 6010 return; 6011 /* 6012 * In tgt_stop mode we also should allow all requests to pass. 6013 * Otherwise, some commands can stuck. 6014 */ 6015 6016 6017 switch (code) { 6018 case MBA_RESET: /* Reset */ 6019 case MBA_SYSTEM_ERR: /* System Error */ 6020 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6021 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6022 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6023 "qla_target(%d): System error async event %#x " 6024 "occurred", vha->vp_idx, code); 6025 break; 6026 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6027 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6028 break; 6029 6030 case MBA_LOOP_UP: 6031 { 6032 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6033 "qla_target(%d): Async LOOP_UP occurred " 6034 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6035 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6036 if (tgt->link_reinit_iocb_pending) { 6037 qlt_send_notify_ack(ha->base_qpair, 6038 &tgt->link_reinit_iocb, 6039 0, 0, 0, 0, 0, 0); 6040 tgt->link_reinit_iocb_pending = 0; 6041 } 6042 break; 6043 } 6044 6045 case MBA_LIP_OCCURRED: 6046 case MBA_LOOP_DOWN: 6047 case MBA_LIP_RESET: 6048 case MBA_RSCN_UPDATE: 6049 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6050 "qla_target(%d): Async event %#x occurred " 6051 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6052 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6053 break; 6054 6055 case MBA_REJECTED_FCP_CMD: 6056 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6057 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6058 vha->vp_idx, 6059 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6060 6061 if (mailbox[3] == 1) { 6062 /* exchange starvation. */ 6063 vha->hw->exch_starvation++; 6064 if (vha->hw->exch_starvation > 5) { 6065 ql_log(ql_log_warn, vha, 0xd03a, 6066 "Exchange starvation-. Resetting RISC\n"); 6067 6068 vha->hw->exch_starvation = 0; 6069 if (IS_P3P_TYPE(vha->hw)) 6070 set_bit(FCOE_CTX_RESET_NEEDED, 6071 &vha->dpc_flags); 6072 else 6073 set_bit(ISP_ABORT_NEEDED, 6074 &vha->dpc_flags); 6075 qla2xxx_wake_dpc(vha); 6076 } 6077 } 6078 break; 6079 6080 case MBA_PORT_UPDATE: 6081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6082 "qla_target(%d): Port update async event %#x " 6083 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6084 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6085 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6086 6087 login_code = mailbox[2]; 6088 if (login_code == 0x4) { 6089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6090 "Async MB 2: Got PLOGI Complete\n"); 6091 vha->hw->exch_starvation = 0; 6092 } else if (login_code == 0x7) 6093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6094 "Async MB 2: Port Logged Out\n"); 6095 break; 6096 default: 6097 break; 6098 } 6099 6100 } 6101 6102 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6103 uint16_t loop_id) 6104 { 6105 fc_port_t *fcport, *tfcp, *del; 6106 int rc; 6107 unsigned long flags; 6108 u8 newfcport = 0; 6109 6110 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6111 if (!fcport) { 6112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6113 "qla_target(%d): Allocation of tmp FC port failed", 6114 vha->vp_idx); 6115 return NULL; 6116 } 6117 6118 fcport->loop_id = loop_id; 6119 6120 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6121 if (rc != QLA_SUCCESS) { 6122 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6123 "qla_target(%d): Failed to retrieve fcport " 6124 "information -- get_port_database() returned %x " 6125 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6126 kfree(fcport); 6127 return NULL; 6128 } 6129 6130 del = NULL; 6131 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6132 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6133 6134 if (tfcp) { 6135 tfcp->d_id = fcport->d_id; 6136 tfcp->port_type = fcport->port_type; 6137 tfcp->supported_classes = fcport->supported_classes; 6138 tfcp->flags |= fcport->flags; 6139 tfcp->scan_state = QLA_FCPORT_FOUND; 6140 6141 del = fcport; 6142 fcport = tfcp; 6143 } else { 6144 if (vha->hw->current_topology == ISP_CFG_F) 6145 fcport->flags |= FCF_FABRIC_DEVICE; 6146 6147 list_add_tail(&fcport->list, &vha->vp_fcports); 6148 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6149 vha->fcport_count++; 6150 fcport->login_gen++; 6151 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6152 fcport->login_succ = 1; 6153 newfcport = 1; 6154 } 6155 6156 fcport->deleted = 0; 6157 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6158 6159 switch (vha->host->active_mode) { 6160 case MODE_INITIATOR: 6161 case MODE_DUAL: 6162 if (newfcport) { 6163 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6164 qla24xx_sched_upd_fcport(fcport); 6165 } else { 6166 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6167 "%s %d %8phC post gpsc fcp_cnt %d\n", 6168 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6169 qla24xx_post_gpsc_work(vha, fcport); 6170 } 6171 } 6172 break; 6173 6174 case MODE_TARGET: 6175 default: 6176 break; 6177 } 6178 if (del) 6179 qla2x00_free_fcport(del); 6180 6181 return fcport; 6182 } 6183 6184 /* Must be called under tgt_mutex */ 6185 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6186 be_id_t s_id) 6187 { 6188 struct fc_port *sess = NULL; 6189 fc_port_t *fcport = NULL; 6190 int rc, global_resets; 6191 uint16_t loop_id = 0; 6192 6193 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6194 /* 6195 * This is Domain Controller, so it should be 6196 * OK to drop SCSI commands from it. 6197 */ 6198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6199 "Unable to find initiator with S_ID %x:%x:%x", 6200 s_id.domain, s_id.area, s_id.al_pa); 6201 return NULL; 6202 } 6203 6204 mutex_lock(&vha->vha_tgt.tgt_mutex); 6205 6206 retry: 6207 global_resets = 6208 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6209 6210 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6211 if (rc != 0) { 6212 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6213 6214 ql_log(ql_log_info, vha, 0xf071, 6215 "qla_target(%d): Unable to find " 6216 "initiator with S_ID %x:%x:%x", 6217 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6218 6219 if (rc == -ENOENT) { 6220 qlt_port_logo_t logo; 6221 6222 logo.id = be_to_port_id(s_id); 6223 logo.cmd_count = 1; 6224 qlt_send_first_logo(vha, &logo); 6225 } 6226 6227 return NULL; 6228 } 6229 6230 fcport = qlt_get_port_database(vha, loop_id); 6231 if (!fcport) { 6232 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6233 return NULL; 6234 } 6235 6236 if (global_resets != 6237 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6238 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6239 "qla_target(%d): global reset during session discovery " 6240 "(counter was %d, new %d), retrying", vha->vp_idx, 6241 global_resets, 6242 atomic_read(&vha->vha_tgt. 6243 qla_tgt->tgt_global_resets_count)); 6244 goto retry; 6245 } 6246 6247 sess = qlt_create_sess(vha, fcport, true); 6248 6249 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6250 6251 return sess; 6252 } 6253 6254 static void qlt_abort_work(struct qla_tgt *tgt, 6255 struct qla_tgt_sess_work_param *prm) 6256 { 6257 struct scsi_qla_host *vha = tgt->vha; 6258 struct qla_hw_data *ha = vha->hw; 6259 struct fc_port *sess = NULL; 6260 unsigned long flags = 0, flags2 = 0; 6261 be_id_t s_id; 6262 int rc; 6263 6264 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6265 6266 if (tgt->tgt_stop) 6267 goto out_term2; 6268 6269 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6270 6271 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6272 if (!sess) { 6273 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6274 6275 sess = qlt_make_local_sess(vha, s_id); 6276 /* sess has got an extra creation ref */ 6277 6278 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6279 if (!sess) 6280 goto out_term2; 6281 } else { 6282 if (sess->deleted) { 6283 sess = NULL; 6284 goto out_term2; 6285 } 6286 6287 if (!kref_get_unless_zero(&sess->sess_kref)) { 6288 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6289 "%s: kref_get fail %8phC \n", 6290 __func__, sess->port_name); 6291 sess = NULL; 6292 goto out_term2; 6293 } 6294 } 6295 6296 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6297 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6298 6299 ha->tgt.tgt_ops->put_sess(sess); 6300 6301 if (rc != 0) 6302 goto out_term; 6303 return; 6304 6305 out_term2: 6306 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6307 6308 out_term: 6309 spin_lock_irqsave(&ha->hardware_lock, flags); 6310 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6311 FCP_TMF_REJECTED, false); 6312 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6313 } 6314 6315 static void qlt_tmr_work(struct qla_tgt *tgt, 6316 struct qla_tgt_sess_work_param *prm) 6317 { 6318 struct atio_from_isp *a = &prm->tm_iocb2; 6319 struct scsi_qla_host *vha = tgt->vha; 6320 struct qla_hw_data *ha = vha->hw; 6321 struct fc_port *sess; 6322 unsigned long flags; 6323 be_id_t s_id; 6324 int rc; 6325 u64 unpacked_lun; 6326 int fn; 6327 void *iocb; 6328 6329 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6330 6331 if (tgt->tgt_stop) 6332 goto out_term2; 6333 6334 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6335 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6336 if (!sess) { 6337 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6338 6339 sess = qlt_make_local_sess(vha, s_id); 6340 /* sess has got an extra creation ref */ 6341 6342 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6343 if (!sess) 6344 goto out_term2; 6345 } else { 6346 if (sess->deleted) { 6347 goto out_term2; 6348 } 6349 6350 if (!kref_get_unless_zero(&sess->sess_kref)) { 6351 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6352 "%s: kref_get fail %8phC\n", 6353 __func__, sess->port_name); 6354 goto out_term2; 6355 } 6356 } 6357 6358 iocb = a; 6359 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6360 unpacked_lun = 6361 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6362 6363 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6364 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6365 6366 ha->tgt.tgt_ops->put_sess(sess); 6367 6368 if (rc != 0) 6369 goto out_term; 6370 return; 6371 6372 out_term2: 6373 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6374 out_term: 6375 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6376 } 6377 6378 static void qlt_sess_work_fn(struct work_struct *work) 6379 { 6380 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6381 struct scsi_qla_host *vha = tgt->vha; 6382 unsigned long flags; 6383 6384 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6385 6386 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6387 while (!list_empty(&tgt->sess_works_list)) { 6388 struct qla_tgt_sess_work_param *prm = list_entry( 6389 tgt->sess_works_list.next, typeof(*prm), 6390 sess_works_list_entry); 6391 6392 /* 6393 * This work can be scheduled on several CPUs at time, so we 6394 * must delete the entry to eliminate double processing 6395 */ 6396 list_del(&prm->sess_works_list_entry); 6397 6398 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6399 6400 switch (prm->type) { 6401 case QLA_TGT_SESS_WORK_ABORT: 6402 qlt_abort_work(tgt, prm); 6403 break; 6404 case QLA_TGT_SESS_WORK_TM: 6405 qlt_tmr_work(tgt, prm); 6406 break; 6407 default: 6408 BUG_ON(1); 6409 break; 6410 } 6411 6412 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6413 6414 kfree(prm); 6415 } 6416 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6417 } 6418 6419 /* Must be called under tgt_host_action_mutex */ 6420 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6421 { 6422 struct qla_tgt *tgt; 6423 int rc, i; 6424 struct qla_qpair_hint *h; 6425 6426 if (!QLA_TGT_MODE_ENABLED()) 6427 return 0; 6428 6429 if (!IS_TGT_MODE_CAPABLE(ha)) { 6430 ql_log(ql_log_warn, base_vha, 0xe070, 6431 "This adapter does not support target mode.\n"); 6432 return 0; 6433 } 6434 6435 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6436 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6437 6438 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6439 6440 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6441 if (!tgt) { 6442 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6443 "Unable to allocate struct qla_tgt\n"); 6444 return -ENOMEM; 6445 } 6446 6447 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6448 sizeof(struct qla_qpair_hint), 6449 GFP_KERNEL); 6450 if (!tgt->qphints) { 6451 kfree(tgt); 6452 ql_log(ql_log_warn, base_vha, 0x0197, 6453 "Unable to allocate qpair hints.\n"); 6454 return -ENOMEM; 6455 } 6456 6457 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6458 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6459 6460 rc = btree_init64(&tgt->lun_qpair_map); 6461 if (rc) { 6462 kfree(tgt->qphints); 6463 kfree(tgt); 6464 ql_log(ql_log_info, base_vha, 0x0198, 6465 "Unable to initialize lun_qpair_map btree\n"); 6466 return -EIO; 6467 } 6468 h = &tgt->qphints[0]; 6469 h->qpair = ha->base_qpair; 6470 INIT_LIST_HEAD(&h->hint_elem); 6471 h->cpuid = ha->base_qpair->cpuid; 6472 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6473 6474 for (i = 0; i < ha->max_qpairs; i++) { 6475 unsigned long flags; 6476 6477 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6478 6479 h = &tgt->qphints[i + 1]; 6480 INIT_LIST_HEAD(&h->hint_elem); 6481 if (qpair) { 6482 h->qpair = qpair; 6483 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6484 list_add_tail(&h->hint_elem, &qpair->hints_list); 6485 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6486 h->cpuid = qpair->cpuid; 6487 } 6488 } 6489 6490 tgt->ha = ha; 6491 tgt->vha = base_vha; 6492 init_waitqueue_head(&tgt->waitQ); 6493 INIT_LIST_HEAD(&tgt->del_sess_list); 6494 spin_lock_init(&tgt->sess_work_lock); 6495 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6496 INIT_LIST_HEAD(&tgt->sess_works_list); 6497 atomic_set(&tgt->tgt_global_resets_count, 0); 6498 6499 base_vha->vha_tgt.qla_tgt = tgt; 6500 6501 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6502 "qla_target(%d): using 64 Bit PCI addressing", 6503 base_vha->vp_idx); 6504 /* 3 is reserved */ 6505 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6506 6507 mutex_lock(&qla_tgt_mutex); 6508 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6509 mutex_unlock(&qla_tgt_mutex); 6510 6511 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6512 ha->tgt.tgt_ops->add_target(base_vha); 6513 6514 return 0; 6515 } 6516 6517 /* Must be called under tgt_host_action_mutex */ 6518 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6519 { 6520 if (!vha->vha_tgt.qla_tgt) 6521 return 0; 6522 6523 if (vha->fc_vport) { 6524 qlt_release(vha->vha_tgt.qla_tgt); 6525 return 0; 6526 } 6527 6528 /* free left over qfull cmds */ 6529 qlt_init_term_exchange(vha); 6530 6531 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6532 vha->host_no, ha); 6533 qlt_release(vha->vha_tgt.qla_tgt); 6534 6535 return 0; 6536 } 6537 6538 void qla_remove_hostmap(struct qla_hw_data *ha) 6539 { 6540 struct scsi_qla_host *node; 6541 u32 key = 0; 6542 6543 btree_for_each_safe32(&ha->host_map, key, node) 6544 btree_remove32(&ha->host_map, key); 6545 6546 btree_destroy32(&ha->host_map); 6547 } 6548 6549 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6550 unsigned char *b) 6551 { 6552 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6553 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6554 put_unaligned_be64(wwpn, b); 6555 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6556 } 6557 6558 /** 6559 * qlt_lport_register - register lport with external module 6560 * 6561 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6562 * @phys_wwpn: physical port WWPN 6563 * @npiv_wwpn: NPIV WWPN 6564 * @npiv_wwnn: NPIV WWNN 6565 * @callback: lport initialization callback for tcm_qla2xxx code 6566 */ 6567 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6568 u64 npiv_wwpn, u64 npiv_wwnn, 6569 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6570 { 6571 struct qla_tgt *tgt; 6572 struct scsi_qla_host *vha; 6573 struct qla_hw_data *ha; 6574 struct Scsi_Host *host; 6575 unsigned long flags; 6576 int rc; 6577 u8 b[WWN_SIZE]; 6578 6579 mutex_lock(&qla_tgt_mutex); 6580 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6581 vha = tgt->vha; 6582 ha = vha->hw; 6583 6584 host = vha->host; 6585 if (!host) 6586 continue; 6587 6588 if (!(host->hostt->supported_mode & MODE_TARGET)) 6589 continue; 6590 6591 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6592 continue; 6593 6594 spin_lock_irqsave(&ha->hardware_lock, flags); 6595 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6596 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6597 host->host_no); 6598 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6599 continue; 6600 } 6601 if (tgt->tgt_stop) { 6602 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6603 host->host_no); 6604 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6605 continue; 6606 } 6607 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6608 6609 if (!scsi_host_get(host)) { 6610 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6611 "Unable to scsi_host_get() for" 6612 " qla2xxx scsi_host\n"); 6613 continue; 6614 } 6615 qlt_lport_dump(vha, phys_wwpn, b); 6616 6617 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6618 scsi_host_put(host); 6619 continue; 6620 } 6621 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6622 if (rc != 0) 6623 scsi_host_put(host); 6624 6625 mutex_unlock(&qla_tgt_mutex); 6626 return rc; 6627 } 6628 mutex_unlock(&qla_tgt_mutex); 6629 6630 return -ENODEV; 6631 } 6632 EXPORT_SYMBOL(qlt_lport_register); 6633 6634 /** 6635 * qlt_lport_deregister - Degister lport 6636 * 6637 * @vha: Registered scsi_qla_host pointer 6638 */ 6639 void qlt_lport_deregister(struct scsi_qla_host *vha) 6640 { 6641 struct qla_hw_data *ha = vha->hw; 6642 struct Scsi_Host *sh = vha->host; 6643 /* 6644 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6645 */ 6646 vha->vha_tgt.target_lport_ptr = NULL; 6647 ha->tgt.tgt_ops = NULL; 6648 /* 6649 * Release the Scsi_Host reference for the underlying qla2xxx host 6650 */ 6651 scsi_host_put(sh); 6652 } 6653 EXPORT_SYMBOL(qlt_lport_deregister); 6654 6655 /* Must be called under HW lock */ 6656 void qlt_set_mode(struct scsi_qla_host *vha) 6657 { 6658 switch (vha->qlini_mode) { 6659 case QLA2XXX_INI_MODE_DISABLED: 6660 case QLA2XXX_INI_MODE_EXCLUSIVE: 6661 vha->host->active_mode = MODE_TARGET; 6662 break; 6663 case QLA2XXX_INI_MODE_ENABLED: 6664 vha->host->active_mode = MODE_INITIATOR; 6665 break; 6666 case QLA2XXX_INI_MODE_DUAL: 6667 vha->host->active_mode = MODE_DUAL; 6668 break; 6669 default: 6670 break; 6671 } 6672 } 6673 6674 /* Must be called under HW lock */ 6675 static void qlt_clear_mode(struct scsi_qla_host *vha) 6676 { 6677 switch (vha->qlini_mode) { 6678 case QLA2XXX_INI_MODE_DISABLED: 6679 vha->host->active_mode = MODE_UNKNOWN; 6680 break; 6681 case QLA2XXX_INI_MODE_EXCLUSIVE: 6682 vha->host->active_mode = MODE_INITIATOR; 6683 break; 6684 case QLA2XXX_INI_MODE_ENABLED: 6685 case QLA2XXX_INI_MODE_DUAL: 6686 vha->host->active_mode = MODE_INITIATOR; 6687 break; 6688 default: 6689 break; 6690 } 6691 } 6692 6693 /* 6694 * qla_tgt_enable_vha - NO LOCK HELD 6695 * 6696 * host_reset, bring up w/ Target Mode Enabled 6697 */ 6698 void 6699 qlt_enable_vha(struct scsi_qla_host *vha) 6700 { 6701 struct qla_hw_data *ha = vha->hw; 6702 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6703 unsigned long flags; 6704 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6705 6706 if (!tgt) { 6707 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6708 "Unable to locate qla_tgt pointer from" 6709 " struct qla_hw_data\n"); 6710 dump_stack(); 6711 return; 6712 } 6713 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6714 return; 6715 6716 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6717 ha->tgt.num_act_qpairs = ha->max_qpairs; 6718 spin_lock_irqsave(&ha->hardware_lock, flags); 6719 tgt->tgt_stopped = 0; 6720 qlt_set_mode(vha); 6721 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6722 6723 mutex_lock(&ha->optrom_mutex); 6724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6725 "%s.\n", __func__); 6726 if (vha->vp_idx) { 6727 qla24xx_disable_vp(vha); 6728 qla24xx_enable_vp(vha); 6729 } else { 6730 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6731 qla2xxx_wake_dpc(base_vha); 6732 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6733 QLA_SUCCESS); 6734 } 6735 mutex_unlock(&ha->optrom_mutex); 6736 } 6737 EXPORT_SYMBOL(qlt_enable_vha); 6738 6739 /* 6740 * qla_tgt_disable_vha - NO LOCK HELD 6741 * 6742 * Disable Target Mode and reset the adapter 6743 */ 6744 static void qlt_disable_vha(struct scsi_qla_host *vha) 6745 { 6746 struct qla_hw_data *ha = vha->hw; 6747 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6748 unsigned long flags; 6749 6750 if (!tgt) { 6751 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6752 "Unable to locate qla_tgt pointer from" 6753 " struct qla_hw_data\n"); 6754 dump_stack(); 6755 return; 6756 } 6757 6758 spin_lock_irqsave(&ha->hardware_lock, flags); 6759 qlt_clear_mode(vha); 6760 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6761 6762 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6763 qla2xxx_wake_dpc(vha); 6764 6765 /* 6766 * We are expecting the offline state. 6767 * QLA_FUNCTION_FAILED means that adapter is offline. 6768 */ 6769 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6770 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6771 "adapter is offline\n"); 6772 } 6773 6774 /* 6775 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6776 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6777 * members. 6778 */ 6779 void 6780 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6781 { 6782 vha->vha_tgt.qla_tgt = NULL; 6783 6784 mutex_init(&vha->vha_tgt.tgt_mutex); 6785 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6786 6787 qlt_clear_mode(vha); 6788 6789 /* 6790 * NOTE: Currently the value is kept the same for <24xx and 6791 * >=24xx ISPs. If it is necessary to change it, 6792 * the check should be added for specific ISPs, 6793 * assigning the value appropriately. 6794 */ 6795 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6796 6797 qlt_add_target(ha, vha); 6798 } 6799 6800 u8 6801 qlt_rff_id(struct scsi_qla_host *vha) 6802 { 6803 u8 fc4_feature = 0; 6804 /* 6805 * FC-4 Feature bit 0 indicates target functionality to the name server. 6806 */ 6807 if (qla_tgt_mode_enabled(vha)) { 6808 fc4_feature = BIT_0; 6809 } else if (qla_ini_mode_enabled(vha)) { 6810 fc4_feature = BIT_1; 6811 } else if (qla_dual_mode_enabled(vha)) 6812 fc4_feature = BIT_0 | BIT_1; 6813 6814 return fc4_feature; 6815 } 6816 6817 /* 6818 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6819 * @ha: HA context 6820 * 6821 * Beginning of ATIO ring has initialization control block already built 6822 * by nvram config routine. 6823 * 6824 * Returns 0 on success. 6825 */ 6826 void 6827 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6828 { 6829 struct qla_hw_data *ha = vha->hw; 6830 uint16_t cnt; 6831 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6832 6833 if (qla_ini_mode_enabled(vha)) 6834 return; 6835 6836 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6837 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6838 pkt++; 6839 } 6840 6841 } 6842 6843 /* 6844 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6845 * @ha: SCSI driver HA context 6846 */ 6847 void 6848 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6849 { 6850 struct qla_hw_data *ha = vha->hw; 6851 struct atio_from_isp *pkt; 6852 int cnt, i; 6853 6854 if (!ha->flags.fw_started) 6855 return; 6856 6857 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6858 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6859 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6860 cnt = pkt->u.raw.entry_count; 6861 6862 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6863 /* 6864 * This packet is corrupted. The header + payload 6865 * can not be trusted. There is no point in passing 6866 * it further up. 6867 */ 6868 ql_log(ql_log_warn, vha, 0xd03c, 6869 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6870 &pkt->u.isp24.fcp_hdr.s_id, 6871 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6872 pkt->u.isp24.exchange_addr, pkt); 6873 6874 adjust_corrupted_atio(pkt); 6875 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6876 ha_locked, 0); 6877 } else { 6878 qlt_24xx_atio_pkt_all_vps(vha, 6879 (struct atio_from_isp *)pkt, ha_locked); 6880 } 6881 6882 for (i = 0; i < cnt; i++) { 6883 ha->tgt.atio_ring_index++; 6884 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6885 ha->tgt.atio_ring_index = 0; 6886 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6887 } else 6888 ha->tgt.atio_ring_ptr++; 6889 6890 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6891 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6892 } 6893 wmb(); 6894 } 6895 6896 /* Adjust ring index */ 6897 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6898 } 6899 6900 void 6901 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6902 { 6903 struct qla_hw_data *ha = vha->hw; 6904 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6905 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6906 6907 if (!QLA_TGT_MODE_ENABLED()) 6908 return; 6909 6910 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6911 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6912 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6913 6914 if (ha->flags.msix_enabled) { 6915 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6916 if (IS_QLA2071(ha)) { 6917 /* 4 ports Baker: Enable Interrupt Handshake */ 6918 icb->msix_atio = 0; 6919 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6920 } else { 6921 icb->msix_atio = cpu_to_le16(msix->entry); 6922 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6923 } 6924 ql_dbg(ql_dbg_init, vha, 0xf072, 6925 "Registering ICB vector 0x%x for atio que.\n", 6926 msix->entry); 6927 } 6928 } else { 6929 /* INTx|MSI */ 6930 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6931 icb->msix_atio = 0; 6932 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6933 ql_dbg(ql_dbg_init, vha, 0xf072, 6934 "%s: Use INTx for ATIOQ.\n", __func__); 6935 } 6936 } 6937 } 6938 6939 void 6940 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6941 { 6942 struct qla_hw_data *ha = vha->hw; 6943 u32 tmp; 6944 6945 if (!QLA_TGT_MODE_ENABLED()) 6946 return; 6947 6948 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6949 if (!ha->tgt.saved_set) { 6950 /* We save only once */ 6951 ha->tgt.saved_exchange_count = nv->exchange_count; 6952 ha->tgt.saved_firmware_options_1 = 6953 nv->firmware_options_1; 6954 ha->tgt.saved_firmware_options_2 = 6955 nv->firmware_options_2; 6956 ha->tgt.saved_firmware_options_3 = 6957 nv->firmware_options_3; 6958 ha->tgt.saved_set = 1; 6959 } 6960 6961 if (qla_tgt_mode_enabled(vha)) 6962 nv->exchange_count = cpu_to_le16(0xFFFF); 6963 else /* dual */ 6964 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6965 6966 /* Enable target mode */ 6967 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6968 6969 /* Disable ini mode, if requested */ 6970 if (qla_tgt_mode_enabled(vha)) 6971 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6972 6973 /* Disable Full Login after LIP */ 6974 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6975 /* Enable initial LIP */ 6976 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6977 if (ql2xtgt_tape_enable) 6978 /* Enable FC Tape support */ 6979 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6980 else 6981 /* Disable FC Tape support */ 6982 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6983 6984 /* Disable Full Login after LIP */ 6985 nv->host_p &= cpu_to_le32(~BIT_10); 6986 6987 /* 6988 * clear BIT 15 explicitly as we have seen at least 6989 * a couple of instances where this was set and this 6990 * was causing the firmware to not be initialized. 6991 */ 6992 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6993 /* Enable target PRLI control */ 6994 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6995 6996 if (IS_QLA25XX(ha)) { 6997 /* Change Loop-prefer to Pt-Pt */ 6998 tmp = ~(BIT_4|BIT_5|BIT_6); 6999 nv->firmware_options_2 &= cpu_to_le32(tmp); 7000 tmp = P2P << 4; 7001 nv->firmware_options_2 |= cpu_to_le32(tmp); 7002 } 7003 } else { 7004 if (ha->tgt.saved_set) { 7005 nv->exchange_count = ha->tgt.saved_exchange_count; 7006 nv->firmware_options_1 = 7007 ha->tgt.saved_firmware_options_1; 7008 nv->firmware_options_2 = 7009 ha->tgt.saved_firmware_options_2; 7010 nv->firmware_options_3 = 7011 ha->tgt.saved_firmware_options_3; 7012 } 7013 return; 7014 } 7015 7016 if (ha->base_qpair->enable_class_2) { 7017 if (vha->flags.init_done) 7018 fc_host_supported_classes(vha->host) = 7019 FC_COS_CLASS2 | FC_COS_CLASS3; 7020 7021 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7022 } else { 7023 if (vha->flags.init_done) 7024 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7025 7026 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7027 } 7028 } 7029 7030 void 7031 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7032 struct init_cb_24xx *icb) 7033 { 7034 struct qla_hw_data *ha = vha->hw; 7035 7036 if (!QLA_TGT_MODE_ENABLED()) 7037 return; 7038 7039 if (ha->tgt.node_name_set) { 7040 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7041 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7042 } 7043 } 7044 7045 void 7046 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7047 { 7048 struct qla_hw_data *ha = vha->hw; 7049 u32 tmp; 7050 7051 if (!QLA_TGT_MODE_ENABLED()) 7052 return; 7053 7054 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7055 if (!ha->tgt.saved_set) { 7056 /* We save only once */ 7057 ha->tgt.saved_exchange_count = nv->exchange_count; 7058 ha->tgt.saved_firmware_options_1 = 7059 nv->firmware_options_1; 7060 ha->tgt.saved_firmware_options_2 = 7061 nv->firmware_options_2; 7062 ha->tgt.saved_firmware_options_3 = 7063 nv->firmware_options_3; 7064 ha->tgt.saved_set = 1; 7065 } 7066 7067 if (qla_tgt_mode_enabled(vha)) 7068 nv->exchange_count = cpu_to_le16(0xFFFF); 7069 else /* dual */ 7070 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7071 7072 /* Enable target mode */ 7073 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7074 7075 /* Disable ini mode, if requested */ 7076 if (qla_tgt_mode_enabled(vha)) 7077 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7078 /* Disable Full Login after LIP */ 7079 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7080 /* Enable initial LIP */ 7081 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7082 /* 7083 * clear BIT 15 explicitly as we have seen at 7084 * least a couple of instances where this was set 7085 * and this was causing the firmware to not be 7086 * initialized. 7087 */ 7088 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7089 if (ql2xtgt_tape_enable) 7090 /* Enable FC tape support */ 7091 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7092 else 7093 /* Disable FC tape support */ 7094 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7095 7096 /* Disable Full Login after LIP */ 7097 nv->host_p &= cpu_to_le32(~BIT_10); 7098 /* Enable target PRLI control */ 7099 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7100 7101 /* Change Loop-prefer to Pt-Pt */ 7102 tmp = ~(BIT_4|BIT_5|BIT_6); 7103 nv->firmware_options_2 &= cpu_to_le32(tmp); 7104 tmp = P2P << 4; 7105 nv->firmware_options_2 |= cpu_to_le32(tmp); 7106 } else { 7107 if (ha->tgt.saved_set) { 7108 nv->exchange_count = ha->tgt.saved_exchange_count; 7109 nv->firmware_options_1 = 7110 ha->tgt.saved_firmware_options_1; 7111 nv->firmware_options_2 = 7112 ha->tgt.saved_firmware_options_2; 7113 nv->firmware_options_3 = 7114 ha->tgt.saved_firmware_options_3; 7115 } 7116 return; 7117 } 7118 7119 if (ha->base_qpair->enable_class_2) { 7120 if (vha->flags.init_done) 7121 fc_host_supported_classes(vha->host) = 7122 FC_COS_CLASS2 | FC_COS_CLASS3; 7123 7124 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7125 } else { 7126 if (vha->flags.init_done) 7127 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7128 7129 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7130 } 7131 } 7132 7133 void 7134 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7135 struct init_cb_81xx *icb) 7136 { 7137 struct qla_hw_data *ha = vha->hw; 7138 7139 if (!QLA_TGT_MODE_ENABLED()) 7140 return; 7141 7142 if (ha->tgt.node_name_set) { 7143 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7144 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7145 } 7146 } 7147 7148 void 7149 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7150 { 7151 if (!QLA_TGT_MODE_ENABLED()) 7152 return; 7153 7154 ha->msix_count += 1; /* For ATIO Q */ 7155 } 7156 7157 7158 void 7159 qlt_modify_vp_config(struct scsi_qla_host *vha, 7160 struct vp_config_entry_24xx *vpmod) 7161 { 7162 /* enable target mode. Bit5 = 1 => disable */ 7163 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7164 vpmod->options_idx1 &= ~BIT_5; 7165 7166 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7167 if (qla_tgt_mode_enabled(vha)) 7168 vpmod->options_idx1 &= ~BIT_4; 7169 } 7170 7171 void 7172 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7173 { 7174 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7175 if (!QLA_TGT_MODE_ENABLED()) 7176 return; 7177 7178 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7179 IS_QLA28XX(ha)) { 7180 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7181 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7182 } else { 7183 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7184 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7185 } 7186 7187 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7188 7189 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7190 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7191 qlt_unknown_atio_work_fn); 7192 7193 qlt_clear_mode(base_vha); 7194 7195 qlt_update_vp_map(base_vha, SET_VP_IDX); 7196 } 7197 7198 irqreturn_t 7199 qla83xx_msix_atio_q(int irq, void *dev_id) 7200 { 7201 struct rsp_que *rsp; 7202 scsi_qla_host_t *vha; 7203 struct qla_hw_data *ha; 7204 unsigned long flags; 7205 7206 rsp = (struct rsp_que *) dev_id; 7207 ha = rsp->hw; 7208 vha = pci_get_drvdata(ha->pdev); 7209 7210 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7211 7212 qlt_24xx_process_atio_queue(vha, 0); 7213 7214 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7215 7216 return IRQ_HANDLED; 7217 } 7218 7219 static void 7220 qlt_handle_abts_recv_work(struct work_struct *work) 7221 { 7222 struct qla_tgt_sess_op *op = container_of(work, 7223 struct qla_tgt_sess_op, work); 7224 scsi_qla_host_t *vha = op->vha; 7225 struct qla_hw_data *ha = vha->hw; 7226 unsigned long flags; 7227 7228 if (qla2x00_reset_active(vha) || 7229 (op->chip_reset != ha->base_qpair->chip_reset)) 7230 return; 7231 7232 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7233 qlt_24xx_process_atio_queue(vha, 0); 7234 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7235 7236 spin_lock_irqsave(&ha->hardware_lock, flags); 7237 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7238 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7239 7240 kfree(op); 7241 } 7242 7243 void 7244 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7245 response_t *pkt) 7246 { 7247 struct qla_tgt_sess_op *op; 7248 7249 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7250 7251 if (!op) { 7252 /* do not reach for ATIO queue here. This is best effort err 7253 * recovery at this point. 7254 */ 7255 qlt_response_pkt_all_vps(vha, rsp, pkt); 7256 return; 7257 } 7258 7259 memcpy(&op->atio, pkt, sizeof(*pkt)); 7260 op->vha = vha; 7261 op->chip_reset = vha->hw->base_qpair->chip_reset; 7262 op->rsp = rsp; 7263 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7264 queue_work(qla_tgt_wq, &op->work); 7265 return; 7266 } 7267 7268 int 7269 qlt_mem_alloc(struct qla_hw_data *ha) 7270 { 7271 if (!QLA_TGT_MODE_ENABLED()) 7272 return 0; 7273 7274 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7275 sizeof(struct qla_tgt_vp_map), 7276 GFP_KERNEL); 7277 if (!ha->tgt.tgt_vp_map) 7278 return -ENOMEM; 7279 7280 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7281 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7282 &ha->tgt.atio_dma, GFP_KERNEL); 7283 if (!ha->tgt.atio_ring) { 7284 kfree(ha->tgt.tgt_vp_map); 7285 return -ENOMEM; 7286 } 7287 return 0; 7288 } 7289 7290 void 7291 qlt_mem_free(struct qla_hw_data *ha) 7292 { 7293 if (!QLA_TGT_MODE_ENABLED()) 7294 return; 7295 7296 if (ha->tgt.atio_ring) { 7297 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7298 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7299 ha->tgt.atio_dma); 7300 } 7301 ha->tgt.atio_ring = NULL; 7302 ha->tgt.atio_dma = 0; 7303 kfree(ha->tgt.tgt_vp_map); 7304 ha->tgt.tgt_vp_map = NULL; 7305 } 7306 7307 /* vport_slock to be held by the caller */ 7308 void 7309 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7310 { 7311 void *slot; 7312 u32 key; 7313 int rc; 7314 7315 key = vha->d_id.b24; 7316 7317 switch (cmd) { 7318 case SET_VP_IDX: 7319 if (!QLA_TGT_MODE_ENABLED()) 7320 return; 7321 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7322 break; 7323 case SET_AL_PA: 7324 slot = btree_lookup32(&vha->hw->host_map, key); 7325 if (!slot) { 7326 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7327 "Save vha in host_map %p %06x\n", vha, key); 7328 rc = btree_insert32(&vha->hw->host_map, 7329 key, vha, GFP_ATOMIC); 7330 if (rc) 7331 ql_log(ql_log_info, vha, 0xd03e, 7332 "Unable to insert s_id into host_map: %06x\n", 7333 key); 7334 return; 7335 } 7336 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7337 "replace existing vha in host_map %p %06x\n", vha, key); 7338 btree_update32(&vha->hw->host_map, key, vha); 7339 break; 7340 case RESET_VP_IDX: 7341 if (!QLA_TGT_MODE_ENABLED()) 7342 return; 7343 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7344 break; 7345 case RESET_AL_PA: 7346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7347 "clear vha in host_map %p %06x\n", vha, key); 7348 slot = btree_lookup32(&vha->hw->host_map, key); 7349 if (slot) 7350 btree_remove32(&vha->hw->host_map, key); 7351 vha->d_id.b24 = 0; 7352 break; 7353 } 7354 } 7355 7356 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7357 { 7358 7359 if (!vha->d_id.b24) { 7360 vha->d_id = id; 7361 qlt_update_vp_map(vha, SET_AL_PA); 7362 } else if (vha->d_id.b24 != id.b24) { 7363 qlt_update_vp_map(vha, RESET_AL_PA); 7364 vha->d_id = id; 7365 qlt_update_vp_map(vha, SET_AL_PA); 7366 } 7367 } 7368 7369 static int __init qlt_parse_ini_mode(void) 7370 { 7371 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7372 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7373 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7374 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7375 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7376 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7377 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7378 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7379 else 7380 return false; 7381 7382 return true; 7383 } 7384 7385 int __init qlt_init(void) 7386 { 7387 int ret; 7388 7389 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7390 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7391 7392 if (!qlt_parse_ini_mode()) { 7393 ql_log(ql_log_fatal, NULL, 0xe06b, 7394 "qlt_parse_ini_mode() failed\n"); 7395 return -EINVAL; 7396 } 7397 7398 if (!QLA_TGT_MODE_ENABLED()) 7399 return 0; 7400 7401 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7402 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7403 qla_tgt_mgmt_cmd), 0, NULL); 7404 if (!qla_tgt_mgmt_cmd_cachep) { 7405 ql_log(ql_log_fatal, NULL, 0xd04b, 7406 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7407 return -ENOMEM; 7408 } 7409 7410 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7411 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7412 0, NULL); 7413 7414 if (!qla_tgt_plogi_cachep) { 7415 ql_log(ql_log_fatal, NULL, 0xe06d, 7416 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7417 ret = -ENOMEM; 7418 goto out_mgmt_cmd_cachep; 7419 } 7420 7421 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7422 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7423 if (!qla_tgt_mgmt_cmd_mempool) { 7424 ql_log(ql_log_fatal, NULL, 0xe06e, 7425 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7426 ret = -ENOMEM; 7427 goto out_plogi_cachep; 7428 } 7429 7430 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7431 if (!qla_tgt_wq) { 7432 ql_log(ql_log_fatal, NULL, 0xe06f, 7433 "alloc_workqueue for qla_tgt_wq failed\n"); 7434 ret = -ENOMEM; 7435 goto out_cmd_mempool; 7436 } 7437 /* 7438 * Return 1 to signal that initiator-mode is being disabled 7439 */ 7440 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7441 7442 out_cmd_mempool: 7443 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7444 out_plogi_cachep: 7445 kmem_cache_destroy(qla_tgt_plogi_cachep); 7446 out_mgmt_cmd_cachep: 7447 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7448 return ret; 7449 } 7450 7451 void qlt_exit(void) 7452 { 7453 if (!QLA_TGT_MODE_ENABLED()) 7454 return; 7455 7456 destroy_workqueue(qla_tgt_wq); 7457 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7458 kmem_cache_destroy(qla_tgt_plogi_cachep); 7459 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7460 } 7461