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 break; 642 case SRB_NACK_PRLI: 643 fcport->fw_login_state = DSC_LS_PRLI_PEND; 644 fcport->deleted = 0; 645 c = "PRLI"; 646 break; 647 case SRB_NACK_LOGO: 648 fcport->fw_login_state = DSC_LS_LOGO_PEND; 649 c = "LOGO"; 650 break; 651 } 652 653 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 654 if (!sp) 655 goto done; 656 657 sp->type = type; 658 sp->name = "nack"; 659 660 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 661 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 662 663 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 664 sp->done = qla2x00_async_nack_sp_done; 665 666 ql_dbg(ql_dbg_disc, vha, 0x20f4, 667 "Async-%s %8phC hndl %x %s\n", 668 sp->name, fcport->port_name, sp->handle, c); 669 670 rval = qla2x00_start_sp(sp); 671 if (rval != QLA_SUCCESS) 672 goto done_free_sp; 673 674 return rval; 675 676 done_free_sp: 677 sp->free(sp); 678 done: 679 fcport->flags &= ~FCF_ASYNC_SENT; 680 return rval; 681 } 682 683 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 684 { 685 fc_port_t *t; 686 687 switch (e->u.nack.type) { 688 case SRB_NACK_PRLI: 689 t = e->u.nack.fcport; 690 flush_work(&t->del_work); 691 flush_work(&t->free_work); 692 mutex_lock(&vha->vha_tgt.tgt_mutex); 693 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 694 mutex_unlock(&vha->vha_tgt.tgt_mutex); 695 if (t) { 696 ql_log(ql_log_info, vha, 0xd034, 697 "%s create sess success %p", __func__, t); 698 /* create sess has an extra kref */ 699 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 700 } 701 break; 702 } 703 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 704 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 705 } 706 707 void qla24xx_delete_sess_fn(struct work_struct *work) 708 { 709 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 710 struct qla_hw_data *ha = NULL; 711 712 if (!fcport || !fcport->vha || !fcport->vha->hw) 713 return; 714 715 ha = fcport->vha->hw; 716 717 if (fcport->se_sess) { 718 ha->tgt.tgt_ops->shutdown_sess(fcport); 719 ha->tgt.tgt_ops->put_sess(fcport); 720 } else { 721 qlt_unreg_sess(fcport); 722 } 723 } 724 725 /* 726 * Called from qla2x00_reg_remote_port() 727 */ 728 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 729 { 730 struct qla_hw_data *ha = vha->hw; 731 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 732 struct fc_port *sess = fcport; 733 unsigned long flags; 734 735 if (!vha->hw->tgt.tgt_ops) 736 return; 737 738 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 739 if (tgt->tgt_stop) { 740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 741 return; 742 } 743 744 if (fcport->disc_state == DSC_DELETE_PEND) { 745 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 746 return; 747 } 748 749 if (!sess->se_sess) { 750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 751 752 mutex_lock(&vha->vha_tgt.tgt_mutex); 753 sess = qlt_create_sess(vha, fcport, false); 754 mutex_unlock(&vha->vha_tgt.tgt_mutex); 755 756 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 757 } else { 758 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 759 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 760 return; 761 } 762 763 if (!kref_get_unless_zero(&sess->sess_kref)) { 764 ql_dbg(ql_dbg_disc, vha, 0x2107, 765 "%s: kref_get fail sess %8phC \n", 766 __func__, sess->port_name); 767 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 768 return; 769 } 770 771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 772 "qla_target(%u): %ssession for port %8phC " 773 "(loop ID %d) reappeared\n", vha->vp_idx, 774 sess->local ? "local " : "", sess->port_name, sess->loop_id); 775 776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 777 "Reappeared sess %p\n", sess); 778 779 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 780 fcport->loop_id, 781 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 782 } 783 784 if (sess && sess->local) { 785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 786 "qla_target(%u): local session for " 787 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 788 fcport->port_name, sess->loop_id); 789 sess->local = 0; 790 } 791 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 792 793 ha->tgt.tgt_ops->put_sess(sess); 794 } 795 796 /* 797 * This is a zero-base ref-counting solution, since hardware_lock 798 * guarantees that ref_count is not modified concurrently. 799 * Upon successful return content of iocb is undefined 800 */ 801 static struct qlt_plogi_ack_t * 802 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 803 struct imm_ntfy_from_isp *iocb) 804 { 805 struct qlt_plogi_ack_t *pla; 806 807 lockdep_assert_held(&vha->hw->hardware_lock); 808 809 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 810 if (pla->id.b24 == id->b24) { 811 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 812 "%s %d %8phC Term INOT due to new INOT", 813 __func__, __LINE__, 814 pla->iocb.u.isp24.port_name); 815 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 816 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 817 return pla; 818 } 819 } 820 821 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 822 if (!pla) { 823 ql_dbg(ql_dbg_async, vha, 0x5088, 824 "qla_target(%d): Allocation of plogi_ack failed\n", 825 vha->vp_idx); 826 return NULL; 827 } 828 829 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 830 pla->id = *id; 831 list_add_tail(&pla->list, &vha->plogi_ack_list); 832 833 return pla; 834 } 835 836 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 837 struct qlt_plogi_ack_t *pla) 838 { 839 struct imm_ntfy_from_isp *iocb = &pla->iocb; 840 port_id_t port_id; 841 uint16_t loop_id; 842 fc_port_t *fcport = pla->fcport; 843 844 BUG_ON(!pla->ref_count); 845 pla->ref_count--; 846 847 if (pla->ref_count) 848 return; 849 850 ql_dbg(ql_dbg_disc, vha, 0x5089, 851 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 852 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 853 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 854 iocb->u.isp24.port_id[0], 855 le16_to_cpu(iocb->u.isp24.nport_handle), 856 iocb->u.isp24.exchange_address, iocb->ox_id); 857 858 port_id.b.domain = iocb->u.isp24.port_id[2]; 859 port_id.b.area = iocb->u.isp24.port_id[1]; 860 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 861 port_id.b.rsvd_1 = 0; 862 863 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 864 865 fcport->loop_id = loop_id; 866 fcport->d_id = port_id; 867 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 868 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 869 else 870 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 871 872 list_for_each_entry(fcport, &vha->vp_fcports, list) { 873 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 874 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 875 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 876 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 877 } 878 879 list_del(&pla->list); 880 kmem_cache_free(qla_tgt_plogi_cachep, pla); 881 } 882 883 void 884 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 885 struct fc_port *sess, enum qlt_plogi_link_t link) 886 { 887 struct imm_ntfy_from_isp *iocb = &pla->iocb; 888 /* Inc ref_count first because link might already be pointing at pla */ 889 pla->ref_count++; 890 891 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 892 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 893 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 894 sess, link, sess->port_name, 895 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 896 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 897 pla->ref_count, pla, link); 898 899 if (link == QLT_PLOGI_LINK_CONFLICT) { 900 switch (sess->disc_state) { 901 case DSC_DELETED: 902 case DSC_DELETE_PEND: 903 pla->ref_count--; 904 return; 905 default: 906 break; 907 } 908 } 909 910 if (sess->plogi_link[link]) 911 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 912 913 if (link == QLT_PLOGI_LINK_SAME_WWN) 914 pla->fcport = sess; 915 916 sess->plogi_link[link] = pla; 917 } 918 919 typedef struct { 920 /* These fields must be initialized by the caller */ 921 port_id_t id; 922 /* 923 * number of cmds dropped while we were waiting for 924 * initiator to ack LOGO initialize to 1 if LOGO is 925 * triggered by a command, otherwise, to 0 926 */ 927 int cmd_count; 928 929 /* These fields are used by callee */ 930 struct list_head list; 931 } qlt_port_logo_t; 932 933 static void 934 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 935 { 936 qlt_port_logo_t *tmp; 937 int res; 938 939 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 940 res = 0; 941 goto out; 942 } 943 944 mutex_lock(&vha->vha_tgt.tgt_mutex); 945 946 list_for_each_entry(tmp, &vha->logo_list, list) { 947 if (tmp->id.b24 == logo->id.b24) { 948 tmp->cmd_count += logo->cmd_count; 949 mutex_unlock(&vha->vha_tgt.tgt_mutex); 950 return; 951 } 952 } 953 954 list_add_tail(&logo->list, &vha->logo_list); 955 956 mutex_unlock(&vha->vha_tgt.tgt_mutex); 957 958 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 959 960 mutex_lock(&vha->vha_tgt.tgt_mutex); 961 list_del(&logo->list); 962 mutex_unlock(&vha->vha_tgt.tgt_mutex); 963 964 out: 965 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 966 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 967 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 968 logo->cmd_count, res); 969 } 970 971 void qlt_free_session_done(struct work_struct *work) 972 { 973 struct fc_port *sess = container_of(work, struct fc_port, 974 free_work); 975 struct qla_tgt *tgt = sess->tgt; 976 struct scsi_qla_host *vha = sess->vha; 977 struct qla_hw_data *ha = vha->hw; 978 unsigned long flags; 979 bool logout_started = false; 980 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 981 struct qlt_plogi_ack_t *own = 982 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 983 984 ql_dbg(ql_dbg_disc, vha, 0xf084, 985 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 986 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 987 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 988 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 989 sess->logout_on_delete, sess->keep_nport_handle, 990 sess->send_els_logo); 991 992 if (!IS_SW_RESV_ADDR(sess->d_id)) { 993 if (ha->flags.edif_enabled && 994 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 995 sess->edif.authok = 0; 996 if (!ha->flags.host_shutting_down) { 997 ql_dbg(ql_dbg_edif, vha, 0x911e, 998 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 999 __func__, sess->port_name); 1000 qla2x00_release_all_sadb(vha, sess); 1001 } else { 1002 ql_dbg(ql_dbg_edif, vha, 0x911e, 1003 "%s bypassing release_all_sadb\n", 1004 __func__); 1005 } 1006 qla_edif_sess_down(vha, sess); 1007 } 1008 qla2x00_mark_device_lost(vha, sess, 0); 1009 1010 if (sess->send_els_logo) { 1011 qlt_port_logo_t logo; 1012 1013 logo.id = sess->d_id; 1014 logo.cmd_count = 0; 1015 INIT_LIST_HEAD(&logo.list); 1016 if (!own) 1017 qlt_send_first_logo(vha, &logo); 1018 sess->send_els_logo = 0; 1019 } 1020 1021 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 1022 int rc; 1023 1024 if (!own || 1025 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1026 sess->logout_completed = 0; 1027 rc = qla2x00_post_async_logout_work(vha, sess, 1028 NULL); 1029 if (rc != QLA_SUCCESS) 1030 ql_log(ql_log_warn, vha, 0xf085, 1031 "Schedule logo failed sess %p rc %d\n", 1032 sess, rc); 1033 else 1034 logout_started = true; 1035 } else if (own && (own->iocb.u.isp24.status_subcode == 1036 ELS_PRLI) && ha->flags.rida_fmt2) { 1037 rc = qla2x00_post_async_prlo_work(vha, sess, 1038 NULL); 1039 if (rc != QLA_SUCCESS) 1040 ql_log(ql_log_warn, vha, 0xf085, 1041 "Schedule PRLO failed sess %p rc %d\n", 1042 sess, rc); 1043 else 1044 logout_started = true; 1045 } 1046 } /* if sess->logout_on_delete */ 1047 1048 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1049 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1050 sess->nvme_flag |= NVME_FLAG_DELETING; 1051 qla_nvme_unregister_remote_port(sess); 1052 } 1053 } 1054 1055 /* 1056 * Release the target session for FC Nexus from fabric module code. 1057 */ 1058 if (sess->se_sess != NULL) 1059 ha->tgt.tgt_ops->free_session(sess); 1060 1061 if (logout_started) { 1062 bool traced = false; 1063 u16 cnt = 0; 1064 1065 while (!READ_ONCE(sess->logout_completed)) { 1066 if (!traced) { 1067 ql_dbg(ql_dbg_disc, vha, 0xf086, 1068 "%s: waiting for sess %p logout\n", 1069 __func__, sess); 1070 traced = true; 1071 } 1072 msleep(100); 1073 cnt++; 1074 /* 1075 * Driver timeout is set to 22 Sec, update count value to loop 1076 * long enough for log-out to complete before advancing. Otherwise, 1077 * straddling logout can interfere with re-login attempt. 1078 */ 1079 if (cnt > 230) 1080 break; 1081 } 1082 1083 ql_dbg(ql_dbg_disc, vha, 0xf087, 1084 "%s: sess %p logout completed\n", __func__, sess); 1085 } 1086 1087 if (sess->logo_ack_needed) { 1088 sess->logo_ack_needed = 0; 1089 qla24xx_async_notify_ack(vha, sess, 1090 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1091 } 1092 1093 spin_lock_irqsave(&vha->work_lock, flags); 1094 sess->flags &= ~FCF_ASYNC_SENT; 1095 spin_unlock_irqrestore(&vha->work_lock, flags); 1096 1097 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1098 if (sess->se_sess) { 1099 sess->se_sess = NULL; 1100 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1101 tgt->sess_count--; 1102 } 1103 1104 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1105 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1106 sess->deleted = QLA_SESS_DELETED; 1107 1108 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1109 vha->fcport_count--; 1110 sess->login_succ = 0; 1111 } 1112 1113 qla2x00_clear_loop_id(sess); 1114 1115 if (sess->conflict) { 1116 sess->conflict->login_pause = 0; 1117 sess->conflict = NULL; 1118 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1119 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1120 } 1121 1122 { 1123 struct qlt_plogi_ack_t *con = 1124 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1125 struct imm_ntfy_from_isp *iocb; 1126 1127 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1128 1129 if (con) { 1130 iocb = &con->iocb; 1131 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1132 "se_sess %p / sess %p port %8phC is gone," 1133 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1134 sess->se_sess, sess, sess->port_name, 1135 own ? "releasing own PLOGI" : "no own PLOGI pending", 1136 own ? own->ref_count : -1, 1137 iocb->u.isp24.port_name, con->ref_count); 1138 qlt_plogi_ack_unref(vha, con); 1139 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1140 } else { 1141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1142 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1143 sess->se_sess, sess, sess->port_name, 1144 own ? "releasing own PLOGI" : 1145 "no own PLOGI pending", 1146 own ? own->ref_count : -1); 1147 } 1148 1149 if (own) { 1150 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1151 qlt_plogi_ack_unref(vha, own); 1152 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1153 } 1154 } 1155 1156 sess->explicit_logout = 0; 1157 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1158 sess->free_pending = 0; 1159 1160 qla2x00_dfs_remove_rport(vha, sess); 1161 1162 ql_dbg(ql_dbg_disc, vha, 0xf001, 1163 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1164 sess, sess->port_name, vha->fcport_count); 1165 1166 if (tgt && (tgt->sess_count == 0)) 1167 wake_up_all(&tgt->waitQ); 1168 1169 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1170 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1171 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1172 switch (vha->host->active_mode) { 1173 case MODE_INITIATOR: 1174 case MODE_DUAL: 1175 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1176 qla2xxx_wake_dpc(vha); 1177 break; 1178 case MODE_TARGET: 1179 default: 1180 /* no-op */ 1181 break; 1182 } 1183 } 1184 1185 if (vha->fcport_count == 0) 1186 wake_up_all(&vha->fcport_waitQ); 1187 } 1188 1189 /* ha->tgt.sess_lock supposed to be held on entry */ 1190 void qlt_unreg_sess(struct fc_port *sess) 1191 { 1192 struct scsi_qla_host *vha = sess->vha; 1193 unsigned long flags; 1194 1195 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1196 "%s sess %p for deletion %8phC\n", 1197 __func__, sess, sess->port_name); 1198 1199 spin_lock_irqsave(&sess->vha->work_lock, flags); 1200 if (sess->free_pending) { 1201 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1202 return; 1203 } 1204 sess->free_pending = 1; 1205 /* 1206 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1207 * management from being sent. 1208 */ 1209 sess->flags |= FCF_ASYNC_SENT; 1210 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1211 1212 if (sess->se_sess) 1213 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1214 1215 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1216 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1217 sess->last_rscn_gen = sess->rscn_gen; 1218 sess->last_login_gen = sess->login_gen; 1219 1220 queue_work(sess->vha->hw->wq, &sess->free_work); 1221 } 1222 EXPORT_SYMBOL(qlt_unreg_sess); 1223 1224 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1225 { 1226 struct qla_hw_data *ha = vha->hw; 1227 struct fc_port *sess = NULL; 1228 uint16_t loop_id; 1229 int res = 0; 1230 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1231 unsigned long flags; 1232 1233 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1234 if (loop_id == 0xFFFF) { 1235 /* Global event */ 1236 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1237 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1238 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1239 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1240 } else { 1241 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1242 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1243 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1244 } 1245 1246 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1247 "Using sess for qla_tgt_reset: %p\n", sess); 1248 if (!sess) { 1249 res = -ESRCH; 1250 return res; 1251 } 1252 1253 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1254 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1255 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1256 mcmd, loop_id); 1257 1258 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1259 } 1260 1261 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1262 { 1263 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1264 sess->logout_on_delete = 0; 1265 sess->logo_ack_needed = 0; 1266 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1267 } 1268 } 1269 1270 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1271 { 1272 struct qla_tgt *tgt = sess->tgt; 1273 unsigned long flags; 1274 u16 sec; 1275 1276 switch (sess->disc_state) { 1277 case DSC_DELETE_PEND: 1278 return; 1279 case DSC_DELETED: 1280 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1281 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1282 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1283 wake_up_all(&tgt->waitQ); 1284 1285 if (sess->vha->fcport_count == 0) 1286 wake_up_all(&sess->vha->fcport_waitQ); 1287 return; 1288 } 1289 break; 1290 case DSC_UPD_FCPORT: 1291 /* 1292 * This port is not done reporting to upper layer. 1293 * let it finish 1294 */ 1295 sess->next_disc_state = DSC_DELETE_PEND; 1296 sec = jiffies_to_msecs(jiffies - 1297 sess->jiffies_at_registration)/1000; 1298 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1299 sess->sec_since_registration = sec; 1300 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1301 "%s %8phC : Slow Rport registration(%d Sec)\n", 1302 __func__, sess->port_name, sec); 1303 } 1304 return; 1305 default: 1306 break; 1307 } 1308 1309 spin_lock_irqsave(&sess->vha->work_lock, flags); 1310 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1311 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1312 return; 1313 } 1314 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1315 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1316 1317 sess->prli_pend_timer = 0; 1318 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1319 1320 qla24xx_chk_fcp_state(sess); 1321 1322 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1323 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1324 sess, sess->port_name, sess->fc4_type); 1325 1326 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1327 } 1328 1329 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1330 { 1331 struct fc_port *sess; 1332 scsi_qla_host_t *vha = tgt->vha; 1333 1334 list_for_each_entry(sess, &vha->vp_fcports, list) { 1335 if (sess->se_sess) 1336 qlt_schedule_sess_for_deletion(sess); 1337 } 1338 1339 /* At this point tgt could be already dead */ 1340 } 1341 1342 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1343 uint16_t *loop_id) 1344 { 1345 struct qla_hw_data *ha = vha->hw; 1346 dma_addr_t gid_list_dma; 1347 struct gid_list_info *gid_list, *gid; 1348 int res, rc, i; 1349 uint16_t entries; 1350 1351 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1352 &gid_list_dma, GFP_KERNEL); 1353 if (!gid_list) { 1354 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1355 "qla_target(%d): DMA Alloc failed of %u\n", 1356 vha->vp_idx, qla2x00_gid_list_size(ha)); 1357 return -ENOMEM; 1358 } 1359 1360 /* Get list of logged in devices */ 1361 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1362 if (rc != QLA_SUCCESS) { 1363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1364 "qla_target(%d): get_id_list() failed: %x\n", 1365 vha->vp_idx, rc); 1366 res = -EBUSY; 1367 goto out_free_id_list; 1368 } 1369 1370 gid = gid_list; 1371 res = -ENOENT; 1372 for (i = 0; i < entries; i++) { 1373 if (gid->al_pa == s_id.al_pa && 1374 gid->area == s_id.area && 1375 gid->domain == s_id.domain) { 1376 *loop_id = le16_to_cpu(gid->loop_id); 1377 res = 0; 1378 break; 1379 } 1380 gid = (void *)gid + ha->gid_list_info_size; 1381 } 1382 1383 out_free_id_list: 1384 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1385 gid_list, gid_list_dma); 1386 return res; 1387 } 1388 1389 /* 1390 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1391 * Caller must put it. 1392 */ 1393 static struct fc_port *qlt_create_sess( 1394 struct scsi_qla_host *vha, 1395 fc_port_t *fcport, 1396 bool local) 1397 { 1398 struct qla_hw_data *ha = vha->hw; 1399 struct fc_port *sess = fcport; 1400 unsigned long flags; 1401 1402 if (vha->vha_tgt.qla_tgt->tgt_stop) 1403 return NULL; 1404 1405 if (fcport->se_sess) { 1406 if (!kref_get_unless_zero(&sess->sess_kref)) { 1407 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1408 "%s: kref_get_unless_zero failed for %8phC\n", 1409 __func__, sess->port_name); 1410 return NULL; 1411 } 1412 return fcport; 1413 } 1414 sess->tgt = vha->vha_tgt.qla_tgt; 1415 sess->local = local; 1416 1417 /* 1418 * Under normal circumstances we want to logout from firmware when 1419 * session eventually ends and release corresponding nport handle. 1420 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1421 * code will adjust these flags as necessary. 1422 */ 1423 sess->logout_on_delete = 1; 1424 sess->keep_nport_handle = 0; 1425 sess->logout_completed = 0; 1426 1427 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1428 &fcport->port_name[0], sess) < 0) { 1429 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1430 "(%d) %8phC check_initiator_node_acl failed\n", 1431 vha->vp_idx, fcport->port_name); 1432 return NULL; 1433 } else { 1434 kref_init(&fcport->sess_kref); 1435 /* 1436 * Take an extra reference to ->sess_kref here to handle 1437 * fc_port access across ->tgt.sess_lock reaquire. 1438 */ 1439 if (!kref_get_unless_zero(&sess->sess_kref)) { 1440 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1441 "%s: kref_get_unless_zero failed for %8phC\n", 1442 __func__, sess->port_name); 1443 return NULL; 1444 } 1445 1446 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1447 if (!IS_SW_RESV_ADDR(sess->d_id)) 1448 vha->vha_tgt.qla_tgt->sess_count++; 1449 1450 qlt_do_generation_tick(vha, &sess->generation); 1451 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1452 } 1453 1454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1455 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1456 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1457 vha->vha_tgt.qla_tgt->sess_count); 1458 1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1460 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1461 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1462 vha->vp_idx, local ? "local " : "", fcport->port_name, 1463 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1464 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1465 1466 return sess; 1467 } 1468 1469 /* 1470 * max_gen - specifies maximum session generation 1471 * at which this deletion requestion is still valid 1472 */ 1473 void 1474 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1475 { 1476 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1477 struct fc_port *sess = fcport; 1478 unsigned long flags; 1479 1480 if (!vha->hw->tgt.tgt_ops) 1481 return; 1482 1483 if (!tgt) 1484 return; 1485 1486 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1487 if (tgt->tgt_stop) { 1488 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1489 return; 1490 } 1491 if (!sess->se_sess) { 1492 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1493 return; 1494 } 1495 1496 if (max_gen - sess->generation < 0) { 1497 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1498 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1499 "Ignoring stale deletion request for se_sess %p / sess %p" 1500 " for port %8phC, req_gen %d, sess_gen %d\n", 1501 sess->se_sess, sess, sess->port_name, max_gen, 1502 sess->generation); 1503 return; 1504 } 1505 1506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1507 1508 sess->local = 1; 1509 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1510 qlt_schedule_sess_for_deletion(sess); 1511 } 1512 1513 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1514 { 1515 struct qla_hw_data *ha = tgt->ha; 1516 unsigned long flags; 1517 int res; 1518 /* 1519 * We need to protect against race, when tgt is freed before or 1520 * inside wake_up() 1521 */ 1522 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1523 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1524 "tgt %p, sess_count=%d\n", 1525 tgt, tgt->sess_count); 1526 res = (tgt->sess_count == 0); 1527 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1528 1529 return res; 1530 } 1531 1532 /* Called by tcm_qla2xxx configfs code */ 1533 int qlt_stop_phase1(struct qla_tgt *tgt) 1534 { 1535 struct scsi_qla_host *vha = tgt->vha; 1536 struct qla_hw_data *ha = tgt->ha; 1537 unsigned long flags; 1538 1539 mutex_lock(&ha->optrom_mutex); 1540 mutex_lock(&qla_tgt_mutex); 1541 1542 if (tgt->tgt_stop || tgt->tgt_stopped) { 1543 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1544 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1545 mutex_unlock(&qla_tgt_mutex); 1546 mutex_unlock(&ha->optrom_mutex); 1547 return -EPERM; 1548 } 1549 1550 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1551 vha->host_no, vha); 1552 /* 1553 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1554 * Lock is needed, because we still can get an incoming packet. 1555 */ 1556 mutex_lock(&vha->vha_tgt.tgt_mutex); 1557 tgt->tgt_stop = 1; 1558 qlt_clear_tgt_db(tgt); 1559 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1560 mutex_unlock(&qla_tgt_mutex); 1561 1562 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1563 "Waiting for sess works (tgt %p)", tgt); 1564 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1565 while (!list_empty(&tgt->sess_works_list)) { 1566 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1567 flush_scheduled_work(); 1568 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1569 } 1570 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1571 1572 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1573 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1574 1575 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1576 1577 /* Big hammer */ 1578 if (!ha->flags.host_shutting_down && 1579 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1580 qlt_disable_vha(vha); 1581 1582 /* Wait for sessions to clear out (just in case) */ 1583 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1584 mutex_unlock(&ha->optrom_mutex); 1585 1586 return 0; 1587 } 1588 EXPORT_SYMBOL(qlt_stop_phase1); 1589 1590 /* Called by tcm_qla2xxx configfs code */ 1591 void qlt_stop_phase2(struct qla_tgt *tgt) 1592 { 1593 scsi_qla_host_t *vha = tgt->vha; 1594 1595 if (tgt->tgt_stopped) { 1596 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1597 "Already in tgt->tgt_stopped state\n"); 1598 dump_stack(); 1599 return; 1600 } 1601 if (!tgt->tgt_stop) { 1602 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1603 "%s: phase1 stop is not completed\n", __func__); 1604 dump_stack(); 1605 return; 1606 } 1607 1608 mutex_lock(&tgt->ha->optrom_mutex); 1609 mutex_lock(&vha->vha_tgt.tgt_mutex); 1610 tgt->tgt_stop = 0; 1611 tgt->tgt_stopped = 1; 1612 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1613 mutex_unlock(&tgt->ha->optrom_mutex); 1614 1615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1616 tgt); 1617 1618 switch (vha->qlini_mode) { 1619 case QLA2XXX_INI_MODE_EXCLUSIVE: 1620 vha->flags.online = 1; 1621 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1622 break; 1623 default: 1624 break; 1625 } 1626 } 1627 EXPORT_SYMBOL(qlt_stop_phase2); 1628 1629 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1630 static void qlt_release(struct qla_tgt *tgt) 1631 { 1632 scsi_qla_host_t *vha = tgt->vha; 1633 void *node; 1634 u64 key = 0; 1635 u16 i; 1636 struct qla_qpair_hint *h; 1637 struct qla_hw_data *ha = vha->hw; 1638 1639 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1640 qlt_stop_phase1(tgt); 1641 1642 if (!tgt->tgt_stopped) 1643 qlt_stop_phase2(tgt); 1644 1645 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1646 unsigned long flags; 1647 1648 h = &tgt->qphints[i]; 1649 if (h->qpair) { 1650 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1651 list_del(&h->hint_elem); 1652 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1653 h->qpair = NULL; 1654 } 1655 } 1656 kfree(tgt->qphints); 1657 mutex_lock(&qla_tgt_mutex); 1658 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1659 mutex_unlock(&qla_tgt_mutex); 1660 1661 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1662 btree_remove64(&tgt->lun_qpair_map, key); 1663 1664 btree_destroy64(&tgt->lun_qpair_map); 1665 1666 if (vha->vp_idx) 1667 if (ha->tgt.tgt_ops && 1668 ha->tgt.tgt_ops->remove_target && 1669 vha->vha_tgt.target_lport_ptr) 1670 ha->tgt.tgt_ops->remove_target(vha); 1671 1672 vha->vha_tgt.qla_tgt = NULL; 1673 1674 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1675 "Release of tgt %p finished\n", tgt); 1676 1677 kfree(tgt); 1678 } 1679 1680 /* ha->hardware_lock supposed to be held on entry */ 1681 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1682 const void *param, unsigned int param_size) 1683 { 1684 struct qla_tgt_sess_work_param *prm; 1685 unsigned long flags; 1686 1687 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1688 if (!prm) { 1689 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1690 "qla_target(%d): Unable to create session " 1691 "work, command will be refused", 0); 1692 return -ENOMEM; 1693 } 1694 1695 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1696 "Scheduling work (type %d, prm %p)" 1697 " to find session for param %p (size %d, tgt %p)\n", 1698 type, prm, param, param_size, tgt); 1699 1700 prm->type = type; 1701 memcpy(&prm->tm_iocb, param, param_size); 1702 1703 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1704 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1705 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1706 1707 schedule_work(&tgt->sess_work); 1708 1709 return 0; 1710 } 1711 1712 /* 1713 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1714 */ 1715 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1716 struct imm_ntfy_from_isp *ntfy, 1717 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1718 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1719 { 1720 struct scsi_qla_host *vha = qpair->vha; 1721 struct qla_hw_data *ha = vha->hw; 1722 request_t *pkt; 1723 struct nack_to_isp *nack; 1724 1725 if (!ha->flags.fw_started) 1726 return; 1727 1728 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1729 1730 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1731 if (!pkt) { 1732 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1733 "qla_target(%d): %s failed: unable to allocate " 1734 "request packet\n", vha->vp_idx, __func__); 1735 return; 1736 } 1737 1738 if (vha->vha_tgt.qla_tgt != NULL) 1739 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1740 1741 pkt->entry_type = NOTIFY_ACK_TYPE; 1742 pkt->entry_count = 1; 1743 1744 nack = (struct nack_to_isp *)pkt; 1745 nack->ox_id = ntfy->ox_id; 1746 1747 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1748 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1749 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1750 nack->u.isp24.flags = ntfy->u.isp24.flags & 1751 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1752 } 1753 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1754 nack->u.isp24.status = ntfy->u.isp24.status; 1755 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1756 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1757 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1758 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1759 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1760 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1761 nack->u.isp24.srr_reject_code = srr_reject_code; 1762 nack->u.isp24.srr_reject_code_expl = srr_explan; 1763 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1764 1765 /* TODO qualify this with EDIF enable */ 1766 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1767 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1768 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1769 } 1770 1771 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1772 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1773 vha->vp_idx, nack->u.isp24.status); 1774 1775 /* Memory Barrier */ 1776 wmb(); 1777 qla2x00_start_iocbs(vha, qpair->req); 1778 } 1779 1780 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1781 { 1782 struct scsi_qla_host *vha = mcmd->vha; 1783 struct qla_hw_data *ha = vha->hw; 1784 struct abts_resp_to_24xx *resp; 1785 __le32 f_ctl; 1786 uint32_t h; 1787 uint8_t *p; 1788 int rc; 1789 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1790 struct qla_qpair *qpair = mcmd->qpair; 1791 1792 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1793 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1794 ha, mcmd->fc_tm_rsp); 1795 1796 rc = qlt_check_reserve_free_req(qpair, 1); 1797 if (rc) { 1798 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1799 "qla_target(%d): %s failed: unable to allocate request packet\n", 1800 vha->vp_idx, __func__); 1801 return -EAGAIN; 1802 } 1803 1804 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1805 memset(resp, 0, sizeof(*resp)); 1806 1807 h = qlt_make_handle(qpair); 1808 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1809 /* 1810 * CTIO type 7 from the firmware doesn't provide a way to 1811 * know the initiator's LOOP ID, hence we can't find 1812 * the session and, so, the command. 1813 */ 1814 return -EAGAIN; 1815 } else { 1816 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1817 } 1818 1819 resp->handle = make_handle(qpair->req->id, h); 1820 resp->entry_type = ABTS_RESP_24XX; 1821 resp->entry_count = 1; 1822 resp->nport_handle = abts->nport_handle; 1823 resp->vp_index = vha->vp_idx; 1824 resp->sof_type = abts->sof_type; 1825 resp->exchange_address = abts->exchange_address; 1826 resp->fcp_hdr_le = abts->fcp_hdr_le; 1827 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1828 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1829 F_CTL_SEQ_INITIATIVE); 1830 p = (uint8_t *)&f_ctl; 1831 resp->fcp_hdr_le.f_ctl[0] = *p++; 1832 resp->fcp_hdr_le.f_ctl[1] = *p++; 1833 resp->fcp_hdr_le.f_ctl[2] = *p; 1834 1835 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1836 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1837 1838 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1839 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1840 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1841 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1842 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1843 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1844 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1845 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1846 } else { 1847 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1848 resp->payload.ba_rjt.reason_code = 1849 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1850 /* Other bytes are zero */ 1851 } 1852 1853 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1854 1855 /* Memory Barrier */ 1856 wmb(); 1857 if (qpair->reqq_start_iocbs) 1858 qpair->reqq_start_iocbs(qpair); 1859 else 1860 qla2x00_start_iocbs(vha, qpair->req); 1861 1862 return rc; 1863 } 1864 1865 /* 1866 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1867 */ 1868 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1869 struct abts_recv_from_24xx *abts, uint32_t status, 1870 bool ids_reversed) 1871 { 1872 struct scsi_qla_host *vha = qpair->vha; 1873 struct qla_hw_data *ha = vha->hw; 1874 struct abts_resp_to_24xx *resp; 1875 __le32 f_ctl; 1876 uint8_t *p; 1877 1878 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1879 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1880 ha, abts, status); 1881 1882 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1883 NULL); 1884 if (!resp) { 1885 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1886 "qla_target(%d): %s failed: unable to allocate " 1887 "request packet", vha->vp_idx, __func__); 1888 return; 1889 } 1890 1891 resp->entry_type = ABTS_RESP_24XX; 1892 resp->handle = QLA_TGT_SKIP_HANDLE; 1893 resp->entry_count = 1; 1894 resp->nport_handle = abts->nport_handle; 1895 resp->vp_index = vha->vp_idx; 1896 resp->sof_type = abts->sof_type; 1897 resp->exchange_address = abts->exchange_address; 1898 resp->fcp_hdr_le = abts->fcp_hdr_le; 1899 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1900 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1901 F_CTL_SEQ_INITIATIVE); 1902 p = (uint8_t *)&f_ctl; 1903 resp->fcp_hdr_le.f_ctl[0] = *p++; 1904 resp->fcp_hdr_le.f_ctl[1] = *p++; 1905 resp->fcp_hdr_le.f_ctl[2] = *p; 1906 if (ids_reversed) { 1907 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1908 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1909 } else { 1910 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1911 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1912 } 1913 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1914 if (status == FCP_TMF_CMPL) { 1915 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1916 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1917 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1918 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1919 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1920 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1921 } else { 1922 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1923 resp->payload.ba_rjt.reason_code = 1924 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1925 /* Other bytes are zero */ 1926 } 1927 1928 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1929 1930 /* Memory Barrier */ 1931 wmb(); 1932 if (qpair->reqq_start_iocbs) 1933 qpair->reqq_start_iocbs(qpair); 1934 else 1935 qla2x00_start_iocbs(vha, qpair->req); 1936 } 1937 1938 /* 1939 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1940 */ 1941 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1942 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1943 { 1944 struct ctio7_to_24xx *ctio; 1945 u16 tmp; 1946 struct abts_recv_from_24xx *entry; 1947 1948 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1949 if (ctio == NULL) { 1950 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1951 "qla_target(%d): %s failed: unable to allocate " 1952 "request packet\n", vha->vp_idx, __func__); 1953 return; 1954 } 1955 1956 if (mcmd) 1957 /* abts from remote port */ 1958 entry = &mcmd->orig_iocb.abts; 1959 else 1960 /* abts from this driver. */ 1961 entry = (struct abts_recv_from_24xx *)pkt; 1962 1963 /* 1964 * We've got on entrance firmware's response on by us generated 1965 * ABTS response. So, in it ID fields are reversed. 1966 */ 1967 1968 ctio->entry_type = CTIO_TYPE7; 1969 ctio->entry_count = 1; 1970 ctio->nport_handle = entry->nport_handle; 1971 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1972 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1973 ctio->vp_index = vha->vp_idx; 1974 ctio->exchange_addr = entry->exchange_addr_to_abort; 1975 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1976 1977 if (mcmd) { 1978 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1979 1980 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1981 tmp |= (mcmd->abort_io_attr << 9); 1982 else if (qpair->retry_term_cnt & 1) 1983 tmp |= (0x4 << 9); 1984 } else { 1985 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1986 1987 if (qpair->retry_term_cnt & 1) 1988 tmp |= (0x4 << 9); 1989 } 1990 ctio->u.status1.flags = cpu_to_le16(tmp); 1991 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1992 1993 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1994 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1995 le16_to_cpu(ctio->u.status1.flags), 1996 le16_to_cpu(ctio->u.status1.ox_id), 1997 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1998 1999 /* Memory Barrier */ 2000 wmb(); 2001 if (qpair->reqq_start_iocbs) 2002 qpair->reqq_start_iocbs(qpair); 2003 else 2004 qla2x00_start_iocbs(vha, qpair->req); 2005 2006 if (mcmd) 2007 qlt_build_abts_resp_iocb(mcmd); 2008 else 2009 qlt_24xx_send_abts_resp(qpair, 2010 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2011 2012 } 2013 2014 /* drop cmds for the given lun 2015 * XXX only looks for cmds on the port through which lun reset was recieved 2016 * XXX does not go through the list of other port (which may have cmds 2017 * for the same lun) 2018 */ 2019 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2020 { 2021 struct qla_tgt_sess_op *op; 2022 struct qla_tgt_cmd *cmd; 2023 uint32_t key; 2024 unsigned long flags; 2025 2026 key = sid_to_key(s_id); 2027 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2028 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 2029 uint32_t op_key; 2030 u64 op_lun; 2031 2032 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2033 op_lun = scsilun_to_int( 2034 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2035 if (op_key == key && op_lun == lun) 2036 op->aborted = true; 2037 } 2038 2039 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2040 uint32_t op_key; 2041 u64 op_lun; 2042 2043 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2044 op_lun = scsilun_to_int( 2045 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2046 if (op_key == key && op_lun == lun) 2047 op->aborted = true; 2048 } 2049 2050 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2051 uint32_t cmd_key; 2052 u64 cmd_lun; 2053 2054 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2055 cmd_lun = scsilun_to_int( 2056 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2057 if (cmd_key == key && cmd_lun == lun) 2058 cmd->aborted = 1; 2059 } 2060 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2061 } 2062 2063 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2064 uint64_t unpacked_lun) 2065 { 2066 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2067 struct qla_qpair_hint *h = NULL; 2068 2069 if (vha->flags.qpairs_available) { 2070 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2071 if (!h) 2072 h = &tgt->qphints[0]; 2073 } else { 2074 h = &tgt->qphints[0]; 2075 } 2076 2077 return h; 2078 } 2079 2080 static void qlt_do_tmr_work(struct work_struct *work) 2081 { 2082 struct qla_tgt_mgmt_cmd *mcmd = 2083 container_of(work, struct qla_tgt_mgmt_cmd, work); 2084 struct qla_hw_data *ha = mcmd->vha->hw; 2085 int rc; 2086 uint32_t tag; 2087 unsigned long flags; 2088 2089 switch (mcmd->tmr_func) { 2090 case QLA_TGT_ABTS: 2091 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2092 break; 2093 default: 2094 tag = 0; 2095 break; 2096 } 2097 2098 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2099 mcmd->tmr_func, tag); 2100 2101 if (rc != 0) { 2102 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2103 switch (mcmd->tmr_func) { 2104 case QLA_TGT_ABTS: 2105 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2106 qlt_build_abts_resp_iocb(mcmd); 2107 break; 2108 case QLA_TGT_LUN_RESET: 2109 case QLA_TGT_CLEAR_TS: 2110 case QLA_TGT_ABORT_TS: 2111 case QLA_TGT_CLEAR_ACA: 2112 case QLA_TGT_TARGET_RESET: 2113 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2114 qla_sam_status); 2115 break; 2116 2117 case QLA_TGT_ABORT_ALL: 2118 case QLA_TGT_NEXUS_LOSS_SESS: 2119 case QLA_TGT_NEXUS_LOSS: 2120 qlt_send_notify_ack(mcmd->qpair, 2121 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2122 break; 2123 } 2124 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2125 2126 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2127 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2128 mcmd->vha->vp_idx, rc); 2129 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2130 } 2131 } 2132 2133 /* ha->hardware_lock supposed to be held on entry */ 2134 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2135 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2136 { 2137 struct qla_hw_data *ha = vha->hw; 2138 struct qla_tgt_mgmt_cmd *mcmd; 2139 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2140 struct qla_tgt_cmd *abort_cmd; 2141 2142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2143 "qla_target(%d): task abort (tag=%d)\n", 2144 vha->vp_idx, abts->exchange_addr_to_abort); 2145 2146 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2147 if (mcmd == NULL) { 2148 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2149 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2150 vha->vp_idx, __func__); 2151 return -ENOMEM; 2152 } 2153 memset(mcmd, 0, sizeof(*mcmd)); 2154 mcmd->cmd_type = TYPE_TGT_TMCMD; 2155 mcmd->sess = sess; 2156 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2157 mcmd->reset_count = ha->base_qpair->chip_reset; 2158 mcmd->tmr_func = QLA_TGT_ABTS; 2159 mcmd->qpair = h->qpair; 2160 mcmd->vha = vha; 2161 2162 /* 2163 * LUN is looked up by target-core internally based on the passed 2164 * abts->exchange_addr_to_abort tag. 2165 */ 2166 mcmd->se_cmd.cpuid = h->cpuid; 2167 2168 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2169 le32_to_cpu(abts->exchange_addr_to_abort)); 2170 if (!abort_cmd) 2171 return -EIO; 2172 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2173 2174 if (abort_cmd->qpair) { 2175 mcmd->qpair = abort_cmd->qpair; 2176 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2177 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2178 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2179 } 2180 2181 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2182 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2183 2184 return 0; 2185 } 2186 2187 /* 2188 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2189 */ 2190 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2191 struct abts_recv_from_24xx *abts) 2192 { 2193 struct qla_hw_data *ha = vha->hw; 2194 struct fc_port *sess; 2195 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2196 be_id_t s_id; 2197 int rc; 2198 unsigned long flags; 2199 2200 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2201 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2202 "qla_target(%d): ABTS: Abort Sequence not " 2203 "supported\n", vha->vp_idx); 2204 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2205 false); 2206 return; 2207 } 2208 2209 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2211 "qla_target(%d): ABTS: Unknown Exchange " 2212 "Address received\n", vha->vp_idx); 2213 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2214 false); 2215 return; 2216 } 2217 2218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2219 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2220 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2221 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2222 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2223 2224 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2225 2226 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2227 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2228 if (!sess) { 2229 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2230 "qla_target(%d): task abort for non-existent session\n", 2231 vha->vp_idx); 2232 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2233 2234 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2235 false); 2236 return; 2237 } 2238 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2239 2240 2241 if (sess->deleted) { 2242 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2243 false); 2244 return; 2245 } 2246 2247 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2248 if (rc != 0) { 2249 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2250 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2251 vha->vp_idx, rc); 2252 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2253 false); 2254 return; 2255 } 2256 } 2257 2258 /* 2259 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2260 */ 2261 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2262 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2263 { 2264 struct scsi_qla_host *ha = mcmd->vha; 2265 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2266 struct ctio7_to_24xx *ctio; 2267 uint16_t temp; 2268 2269 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2270 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2271 ha, atio, resp_code); 2272 2273 2274 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2275 if (ctio == NULL) { 2276 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2277 "qla_target(%d): %s failed: unable to allocate " 2278 "request packet\n", ha->vp_idx, __func__); 2279 return; 2280 } 2281 2282 ctio->entry_type = CTIO_TYPE7; 2283 ctio->entry_count = 1; 2284 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2285 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2286 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2287 ctio->vp_index = ha->vp_idx; 2288 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2289 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2290 temp = (atio->u.isp24.attr << 9)| 2291 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2292 ctio->u.status1.flags = cpu_to_le16(temp); 2293 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2294 ctio->u.status1.ox_id = cpu_to_le16(temp); 2295 ctio->u.status1.scsi_status = 2296 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2297 ctio->u.status1.response_len = cpu_to_le16(8); 2298 ctio->u.status1.sense_data[0] = resp_code; 2299 2300 /* Memory Barrier */ 2301 wmb(); 2302 if (qpair->reqq_start_iocbs) 2303 qpair->reqq_start_iocbs(qpair); 2304 else 2305 qla2x00_start_iocbs(ha, qpair->req); 2306 } 2307 2308 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2309 { 2310 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2311 } 2312 EXPORT_SYMBOL(qlt_free_mcmd); 2313 2314 /* 2315 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2316 * reacquire 2317 */ 2318 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2319 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2320 { 2321 struct atio_from_isp *atio = &cmd->atio; 2322 struct ctio7_to_24xx *ctio; 2323 uint16_t temp; 2324 struct scsi_qla_host *vha = cmd->vha; 2325 2326 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2327 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2328 "sense_key=%02x, asc=%02x, ascq=%02x", 2329 vha, atio, scsi_status, sense_key, asc, ascq); 2330 2331 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2332 if (!ctio) { 2333 ql_dbg(ql_dbg_async, vha, 0x3067, 2334 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2335 vha->host_no, __func__); 2336 goto out; 2337 } 2338 2339 ctio->entry_type = CTIO_TYPE7; 2340 ctio->entry_count = 1; 2341 ctio->handle = QLA_TGT_SKIP_HANDLE; 2342 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2343 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2344 ctio->vp_index = vha->vp_idx; 2345 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2346 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2347 temp = (atio->u.isp24.attr << 9) | 2348 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2349 ctio->u.status1.flags = cpu_to_le16(temp); 2350 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2351 ctio->u.status1.ox_id = cpu_to_le16(temp); 2352 ctio->u.status1.scsi_status = 2353 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2354 ctio->u.status1.response_len = cpu_to_le16(18); 2355 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2356 2357 if (ctio->u.status1.residual != 0) 2358 ctio->u.status1.scsi_status |= 2359 cpu_to_le16(SS_RESIDUAL_UNDER); 2360 2361 /* Fixed format sense data. */ 2362 ctio->u.status1.sense_data[0] = 0x70; 2363 ctio->u.status1.sense_data[2] = sense_key; 2364 /* Additional sense length */ 2365 ctio->u.status1.sense_data[7] = 0xa; 2366 /* ASC and ASCQ */ 2367 ctio->u.status1.sense_data[12] = asc; 2368 ctio->u.status1.sense_data[13] = ascq; 2369 2370 /* Memory Barrier */ 2371 wmb(); 2372 2373 if (qpair->reqq_start_iocbs) 2374 qpair->reqq_start_iocbs(qpair); 2375 else 2376 qla2x00_start_iocbs(vha, qpair->req); 2377 2378 out: 2379 return; 2380 } 2381 2382 /* callback from target fabric module code */ 2383 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2384 { 2385 struct scsi_qla_host *vha = mcmd->sess->vha; 2386 struct qla_hw_data *ha = vha->hw; 2387 unsigned long flags; 2388 struct qla_qpair *qpair = mcmd->qpair; 2389 bool free_mcmd = true; 2390 2391 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2392 "TM response mcmd (%p) status %#x state %#x", 2393 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2394 2395 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2396 2397 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2398 /* 2399 * Either the port is not online or this request was from 2400 * previous life, just abort the processing. 2401 */ 2402 ql_dbg(ql_dbg_async, vha, 0xe100, 2403 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2404 vha->flags.online, qla2x00_reset_active(vha), 2405 mcmd->reset_count, qpair->chip_reset); 2406 ha->tgt.tgt_ops->free_mcmd(mcmd); 2407 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2408 return; 2409 } 2410 2411 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2412 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2413 case ELS_LOGO: 2414 case ELS_PRLO: 2415 case ELS_TPRLO: 2416 ql_dbg(ql_dbg_disc, vha, 0x2106, 2417 "TM response logo %8phC status %#x state %#x", 2418 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2419 mcmd->flags); 2420 qlt_schedule_sess_for_deletion(mcmd->sess); 2421 break; 2422 default: 2423 qlt_send_notify_ack(vha->hw->base_qpair, 2424 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2425 break; 2426 } 2427 } else { 2428 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2429 qlt_build_abts_resp_iocb(mcmd); 2430 free_mcmd = false; 2431 } else 2432 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2433 mcmd->fc_tm_rsp); 2434 } 2435 /* 2436 * Make the callback for ->free_mcmd() to queue_work() and invoke 2437 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2438 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2439 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2440 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2441 * qlt_xmit_tm_rsp() returns here.. 2442 */ 2443 if (free_mcmd) 2444 ha->tgt.tgt_ops->free_mcmd(mcmd); 2445 2446 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2447 } 2448 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2449 2450 /* No locks */ 2451 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2452 { 2453 struct qla_tgt_cmd *cmd = prm->cmd; 2454 2455 BUG_ON(cmd->sg_cnt == 0); 2456 2457 prm->sg = (struct scatterlist *)cmd->sg; 2458 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2459 cmd->sg_cnt, cmd->dma_data_direction); 2460 if (unlikely(prm->seg_cnt == 0)) 2461 goto out_err; 2462 2463 prm->cmd->sg_mapped = 1; 2464 2465 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2466 /* 2467 * If greater than four sg entries then we need to allocate 2468 * the continuation entries 2469 */ 2470 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2471 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2472 QLA_TGT_DATASEGS_PER_CMD_24XX, 2473 QLA_TGT_DATASEGS_PER_CONT_24XX); 2474 } else { 2475 /* DIF */ 2476 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2477 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2478 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2479 prm->tot_dsds = prm->seg_cnt; 2480 } else 2481 prm->tot_dsds = prm->seg_cnt; 2482 2483 if (cmd->prot_sg_cnt) { 2484 prm->prot_sg = cmd->prot_sg; 2485 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2486 cmd->prot_sg, cmd->prot_sg_cnt, 2487 cmd->dma_data_direction); 2488 if (unlikely(prm->prot_seg_cnt == 0)) 2489 goto out_err; 2490 2491 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2492 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2493 /* Dif Bundling not support here */ 2494 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2495 cmd->blk_sz); 2496 prm->tot_dsds += prm->prot_seg_cnt; 2497 } else 2498 prm->tot_dsds += prm->prot_seg_cnt; 2499 } 2500 } 2501 2502 return 0; 2503 2504 out_err: 2505 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2506 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2507 0, prm->cmd->sg_cnt); 2508 return -1; 2509 } 2510 2511 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2512 { 2513 struct qla_hw_data *ha; 2514 struct qla_qpair *qpair; 2515 2516 if (!cmd->sg_mapped) 2517 return; 2518 2519 qpair = cmd->qpair; 2520 2521 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2522 cmd->dma_data_direction); 2523 cmd->sg_mapped = 0; 2524 2525 if (cmd->prot_sg_cnt) 2526 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2527 cmd->dma_data_direction); 2528 2529 if (!cmd->ctx) 2530 return; 2531 ha = vha->hw; 2532 if (cmd->ctx_dsd_alloced) 2533 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2534 2535 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2536 } 2537 2538 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2539 uint32_t req_cnt) 2540 { 2541 uint32_t cnt; 2542 struct req_que *req = qpair->req; 2543 2544 if (req->cnt < (req_cnt + 2)) { 2545 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2546 rd_reg_dword_relaxed(req->req_q_out)); 2547 2548 if (req->ring_index < cnt) 2549 req->cnt = cnt - req->ring_index; 2550 else 2551 req->cnt = req->length - (req->ring_index - cnt); 2552 2553 if (unlikely(req->cnt < (req_cnt + 2))) 2554 return -EAGAIN; 2555 } 2556 2557 req->cnt -= req_cnt; 2558 2559 return 0; 2560 } 2561 2562 /* 2563 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2564 */ 2565 static inline void *qlt_get_req_pkt(struct req_que *req) 2566 { 2567 /* Adjust ring index. */ 2568 req->ring_index++; 2569 if (req->ring_index == req->length) { 2570 req->ring_index = 0; 2571 req->ring_ptr = req->ring; 2572 } else { 2573 req->ring_ptr++; 2574 } 2575 return (cont_entry_t *)req->ring_ptr; 2576 } 2577 2578 /* ha->hardware_lock supposed to be held on entry */ 2579 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2580 { 2581 uint32_t h; 2582 int index; 2583 uint8_t found = 0; 2584 struct req_que *req = qpair->req; 2585 2586 h = req->current_outstanding_cmd; 2587 2588 for (index = 1; index < req->num_outstanding_cmds; index++) { 2589 h++; 2590 if (h == req->num_outstanding_cmds) 2591 h = 1; 2592 2593 if (h == QLA_TGT_SKIP_HANDLE) 2594 continue; 2595 2596 if (!req->outstanding_cmds[h]) { 2597 found = 1; 2598 break; 2599 } 2600 } 2601 2602 if (found) { 2603 req->current_outstanding_cmd = h; 2604 } else { 2605 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2606 "qla_target(%d): Ran out of empty cmd slots\n", 2607 qpair->vha->vp_idx); 2608 h = QLA_TGT_NULL_HANDLE; 2609 } 2610 2611 return h; 2612 } 2613 2614 /* ha->hardware_lock supposed to be held on entry */ 2615 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2616 struct qla_tgt_prm *prm) 2617 { 2618 uint32_t h; 2619 struct ctio7_to_24xx *pkt; 2620 struct atio_from_isp *atio = &prm->cmd->atio; 2621 uint16_t temp; 2622 struct qla_tgt_cmd *cmd = prm->cmd; 2623 2624 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2625 prm->pkt = pkt; 2626 memset(pkt, 0, sizeof(*pkt)); 2627 2628 pkt->entry_type = CTIO_TYPE7; 2629 pkt->entry_count = (uint8_t)prm->req_cnt; 2630 pkt->vp_index = prm->cmd->vp_idx; 2631 2632 h = qlt_make_handle(qpair); 2633 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2634 /* 2635 * CTIO type 7 from the firmware doesn't provide a way to 2636 * know the initiator's LOOP ID, hence we can't find 2637 * the session and, so, the command. 2638 */ 2639 return -EAGAIN; 2640 } else 2641 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2642 2643 pkt->handle = make_handle(qpair->req->id, h); 2644 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2645 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2646 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2647 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2648 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2649 temp = atio->u.isp24.attr << 9; 2650 pkt->u.status0.flags |= cpu_to_le16(temp); 2651 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2652 pkt->u.status0.ox_id = cpu_to_le16(temp); 2653 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2654 2655 if (cmd->edif) { 2656 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2657 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2658 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2659 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2660 2661 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2662 } 2663 2664 return 0; 2665 } 2666 2667 /* 2668 * ha->hardware_lock supposed to be held on entry. We have already made sure 2669 * that there is sufficient amount of request entries to not drop it. 2670 */ 2671 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2672 { 2673 int cnt; 2674 struct dsd64 *cur_dsd; 2675 2676 /* Build continuation packets */ 2677 while (prm->seg_cnt > 0) { 2678 cont_a64_entry_t *cont_pkt64 = 2679 (cont_a64_entry_t *)qlt_get_req_pkt( 2680 prm->cmd->qpair->req); 2681 2682 /* 2683 * Make sure that from cont_pkt64 none of 2684 * 64-bit specific fields used for 32-bit 2685 * addressing. Cast to (cont_entry_t *) for 2686 * that. 2687 */ 2688 2689 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2690 2691 cont_pkt64->entry_count = 1; 2692 cont_pkt64->sys_define = 0; 2693 2694 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2695 cur_dsd = cont_pkt64->dsd; 2696 2697 /* Load continuation entry data segments */ 2698 for (cnt = 0; 2699 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2700 cnt++, prm->seg_cnt--) { 2701 append_dsd64(&cur_dsd, prm->sg); 2702 prm->sg = sg_next(prm->sg); 2703 } 2704 } 2705 } 2706 2707 /* 2708 * ha->hardware_lock supposed to be held on entry. We have already made sure 2709 * that there is sufficient amount of request entries to not drop it. 2710 */ 2711 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2712 { 2713 int cnt; 2714 struct dsd64 *cur_dsd; 2715 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2716 2717 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2718 2719 /* Setup packet address segment pointer */ 2720 cur_dsd = &pkt24->u.status0.dsd; 2721 2722 /* Set total data segment count */ 2723 if (prm->seg_cnt) 2724 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2725 2726 if (prm->seg_cnt == 0) { 2727 /* No data transfer */ 2728 cur_dsd->address = 0; 2729 cur_dsd->length = 0; 2730 return; 2731 } 2732 2733 /* If scatter gather */ 2734 2735 /* Load command entry data segments */ 2736 for (cnt = 0; 2737 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2738 cnt++, prm->seg_cnt--) { 2739 append_dsd64(&cur_dsd, prm->sg); 2740 prm->sg = sg_next(prm->sg); 2741 } 2742 2743 qlt_load_cont_data_segments(prm); 2744 } 2745 2746 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2747 { 2748 return cmd->bufflen > 0; 2749 } 2750 2751 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2752 { 2753 struct qla_tgt_cmd *cmd; 2754 struct scsi_qla_host *vha; 2755 2756 /* asc 0x10=dif error */ 2757 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2758 cmd = prm->cmd; 2759 vha = cmd->vha; 2760 /* ASCQ */ 2761 switch (prm->sense_buffer[13]) { 2762 case 1: 2763 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2764 "BE detected Guard 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 2: 2770 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2771 "BE detected APP 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 case 3: 2777 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2778 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%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 default: 2784 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2785 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2786 "se_cmd=%p tag[%x]", 2787 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2788 cmd->atio.u.isp24.exchange_addr); 2789 break; 2790 } 2791 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2792 } 2793 } 2794 2795 /* 2796 * Called without ha->hardware_lock held 2797 */ 2798 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2799 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2800 uint32_t *full_req_cnt) 2801 { 2802 struct se_cmd *se_cmd = &cmd->se_cmd; 2803 struct qla_qpair *qpair = cmd->qpair; 2804 2805 prm->cmd = cmd; 2806 prm->tgt = cmd->tgt; 2807 prm->pkt = NULL; 2808 prm->rq_result = scsi_status; 2809 prm->sense_buffer = &cmd->sense_buffer[0]; 2810 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2811 prm->sg = NULL; 2812 prm->seg_cnt = -1; 2813 prm->req_cnt = 1; 2814 prm->residual = 0; 2815 prm->add_status_pkt = 0; 2816 prm->prot_sg = NULL; 2817 prm->prot_seg_cnt = 0; 2818 prm->tot_dsds = 0; 2819 2820 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2821 if (qlt_pci_map_calc_cnt(prm) != 0) 2822 return -EAGAIN; 2823 } 2824 2825 *full_req_cnt = prm->req_cnt; 2826 2827 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2828 prm->residual = se_cmd->residual_count; 2829 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2830 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2831 prm->residual, se_cmd->tag, 2832 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2833 cmd->bufflen, prm->rq_result); 2834 prm->rq_result |= SS_RESIDUAL_UNDER; 2835 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2836 prm->residual = se_cmd->residual_count; 2837 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2838 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2839 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2840 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2841 prm->rq_result |= SS_RESIDUAL_OVER; 2842 } 2843 2844 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2845 /* 2846 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2847 * ignored in *xmit_response() below 2848 */ 2849 if (qlt_has_data(cmd)) { 2850 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2851 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2852 (prm->rq_result != 0))) { 2853 prm->add_status_pkt = 1; 2854 (*full_req_cnt)++; 2855 } 2856 } 2857 } 2858 2859 return 0; 2860 } 2861 2862 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2863 int sending_sense) 2864 { 2865 if (cmd->qpair->enable_class_2) 2866 return 0; 2867 2868 if (sending_sense) 2869 return cmd->conf_compl_supported; 2870 else 2871 return cmd->qpair->enable_explicit_conf && 2872 cmd->conf_compl_supported; 2873 } 2874 2875 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2876 struct qla_tgt_prm *prm) 2877 { 2878 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2879 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2880 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2881 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2882 ctio->u.status0.flags |= cpu_to_le16( 2883 CTIO7_FLAGS_EXPLICIT_CONFORM | 2884 CTIO7_FLAGS_CONFORM_REQ); 2885 } 2886 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2887 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2888 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2889 int i; 2890 2891 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2892 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2893 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2894 "Skipping EXPLICIT_CONFORM and " 2895 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2896 "non GOOD status\n"); 2897 goto skip_explict_conf; 2898 } 2899 ctio->u.status1.flags |= cpu_to_le16( 2900 CTIO7_FLAGS_EXPLICIT_CONFORM | 2901 CTIO7_FLAGS_CONFORM_REQ); 2902 } 2903 skip_explict_conf: 2904 ctio->u.status1.flags &= 2905 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2906 ctio->u.status1.flags |= 2907 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2908 ctio->u.status1.scsi_status |= 2909 cpu_to_le16(SS_SENSE_LEN_VALID); 2910 ctio->u.status1.sense_length = 2911 cpu_to_le16(prm->sense_buffer_len); 2912 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2913 uint32_t v; 2914 2915 v = get_unaligned_be32( 2916 &((uint32_t *)prm->sense_buffer)[i]); 2917 put_unaligned_le32(v, 2918 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2919 } 2920 qlt_print_dif_err(prm); 2921 2922 } else { 2923 ctio->u.status1.flags &= 2924 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2925 ctio->u.status1.flags |= 2926 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2927 ctio->u.status1.sense_length = 0; 2928 memset(ctio->u.status1.sense_data, 0, 2929 sizeof(ctio->u.status1.sense_data)); 2930 } 2931 2932 /* Sense with len > 24, is it possible ??? */ 2933 } 2934 2935 static inline int 2936 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2937 { 2938 switch (se_cmd->prot_op) { 2939 case TARGET_PROT_DOUT_INSERT: 2940 case TARGET_PROT_DIN_STRIP: 2941 if (ql2xenablehba_err_chk >= 1) 2942 return 1; 2943 break; 2944 case TARGET_PROT_DOUT_PASS: 2945 case TARGET_PROT_DIN_PASS: 2946 if (ql2xenablehba_err_chk >= 2) 2947 return 1; 2948 break; 2949 case TARGET_PROT_DIN_INSERT: 2950 case TARGET_PROT_DOUT_STRIP: 2951 return 1; 2952 default: 2953 break; 2954 } 2955 return 0; 2956 } 2957 2958 static inline int 2959 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2960 { 2961 switch (se_cmd->prot_op) { 2962 case TARGET_PROT_DIN_INSERT: 2963 case TARGET_PROT_DOUT_INSERT: 2964 case TARGET_PROT_DIN_STRIP: 2965 case TARGET_PROT_DOUT_STRIP: 2966 case TARGET_PROT_DIN_PASS: 2967 case TARGET_PROT_DOUT_PASS: 2968 return 1; 2969 default: 2970 return 0; 2971 } 2972 return 0; 2973 } 2974 2975 /* 2976 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2977 */ 2978 static void 2979 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2980 uint16_t *pfw_prot_opts) 2981 { 2982 struct se_cmd *se_cmd = &cmd->se_cmd; 2983 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2984 scsi_qla_host_t *vha = cmd->tgt->vha; 2985 struct qla_hw_data *ha = vha->hw; 2986 uint32_t t32 = 0; 2987 2988 /* 2989 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2990 * have been immplemented by TCM, before AppTag is avail. 2991 * Look for modesense_handlers[] 2992 */ 2993 ctx->app_tag = 0; 2994 ctx->app_tag_mask[0] = 0x0; 2995 ctx->app_tag_mask[1] = 0x0; 2996 2997 if (IS_PI_UNINIT_CAPABLE(ha)) { 2998 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2999 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3000 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 3001 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3002 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3003 } 3004 3005 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 3006 3007 switch (se_cmd->prot_type) { 3008 case TARGET_DIF_TYPE0_PROT: 3009 /* 3010 * No check for ql2xenablehba_err_chk, as it 3011 * would be an I/O error if hba tag generation 3012 * is not done. 3013 */ 3014 ctx->ref_tag = cpu_to_le32(lba); 3015 /* enable ALL bytes of the ref tag */ 3016 ctx->ref_tag_mask[0] = 0xff; 3017 ctx->ref_tag_mask[1] = 0xff; 3018 ctx->ref_tag_mask[2] = 0xff; 3019 ctx->ref_tag_mask[3] = 0xff; 3020 break; 3021 case TARGET_DIF_TYPE1_PROT: 3022 /* 3023 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3024 * REF tag, and 16 bit app tag. 3025 */ 3026 ctx->ref_tag = cpu_to_le32(lba); 3027 if (!qla_tgt_ref_mask_check(se_cmd) || 3028 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3029 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3030 break; 3031 } 3032 /* enable ALL bytes of the ref tag */ 3033 ctx->ref_tag_mask[0] = 0xff; 3034 ctx->ref_tag_mask[1] = 0xff; 3035 ctx->ref_tag_mask[2] = 0xff; 3036 ctx->ref_tag_mask[3] = 0xff; 3037 break; 3038 case TARGET_DIF_TYPE2_PROT: 3039 /* 3040 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3041 * tag has to match LBA in CDB + N 3042 */ 3043 ctx->ref_tag = cpu_to_le32(lba); 3044 if (!qla_tgt_ref_mask_check(se_cmd) || 3045 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3046 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3047 break; 3048 } 3049 /* enable ALL bytes of the ref tag */ 3050 ctx->ref_tag_mask[0] = 0xff; 3051 ctx->ref_tag_mask[1] = 0xff; 3052 ctx->ref_tag_mask[2] = 0xff; 3053 ctx->ref_tag_mask[3] = 0xff; 3054 break; 3055 case TARGET_DIF_TYPE3_PROT: 3056 /* For TYPE 3 protection: 16 bit GUARD only */ 3057 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3058 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3059 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3060 break; 3061 } 3062 } 3063 3064 static inline int 3065 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3066 { 3067 struct dsd64 *cur_dsd; 3068 uint32_t transfer_length = 0; 3069 uint32_t data_bytes; 3070 uint32_t dif_bytes; 3071 uint8_t bundling = 1; 3072 struct crc_context *crc_ctx_pkt = NULL; 3073 struct qla_hw_data *ha; 3074 struct ctio_crc2_to_fw *pkt; 3075 dma_addr_t crc_ctx_dma; 3076 uint16_t fw_prot_opts = 0; 3077 struct qla_tgt_cmd *cmd = prm->cmd; 3078 struct se_cmd *se_cmd = &cmd->se_cmd; 3079 uint32_t h; 3080 struct atio_from_isp *atio = &prm->cmd->atio; 3081 struct qla_tc_param tc; 3082 uint16_t t16; 3083 scsi_qla_host_t *vha = cmd->vha; 3084 3085 ha = vha->hw; 3086 3087 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3088 prm->pkt = pkt; 3089 memset(pkt, 0, sizeof(*pkt)); 3090 3091 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3092 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3093 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3094 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3095 3096 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3097 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3098 bundling = 0; 3099 3100 /* Compute dif len and adjust data len to incude protection */ 3101 data_bytes = cmd->bufflen; 3102 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3103 3104 switch (se_cmd->prot_op) { 3105 case TARGET_PROT_DIN_INSERT: 3106 case TARGET_PROT_DOUT_STRIP: 3107 transfer_length = data_bytes; 3108 if (cmd->prot_sg_cnt) 3109 data_bytes += dif_bytes; 3110 break; 3111 case TARGET_PROT_DIN_STRIP: 3112 case TARGET_PROT_DOUT_INSERT: 3113 case TARGET_PROT_DIN_PASS: 3114 case TARGET_PROT_DOUT_PASS: 3115 transfer_length = data_bytes + dif_bytes; 3116 break; 3117 default: 3118 BUG(); 3119 break; 3120 } 3121 3122 if (!qlt_hba_err_chk_enabled(se_cmd)) 3123 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3124 /* HBA error checking enabled */ 3125 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3126 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3127 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3128 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3129 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3130 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3131 } 3132 3133 switch (se_cmd->prot_op) { 3134 case TARGET_PROT_DIN_INSERT: 3135 case TARGET_PROT_DOUT_INSERT: 3136 fw_prot_opts |= PO_MODE_DIF_INSERT; 3137 break; 3138 case TARGET_PROT_DIN_STRIP: 3139 case TARGET_PROT_DOUT_STRIP: 3140 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3141 break; 3142 case TARGET_PROT_DIN_PASS: 3143 case TARGET_PROT_DOUT_PASS: 3144 fw_prot_opts |= PO_MODE_DIF_PASS; 3145 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3146 break; 3147 default:/* Normal Request */ 3148 fw_prot_opts |= PO_MODE_DIF_PASS; 3149 break; 3150 } 3151 3152 /* ---- PKT ---- */ 3153 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3154 pkt->entry_type = CTIO_CRC2; 3155 pkt->entry_count = 1; 3156 pkt->vp_index = cmd->vp_idx; 3157 3158 h = qlt_make_handle(qpair); 3159 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3160 /* 3161 * CTIO type 7 from the firmware doesn't provide a way to 3162 * know the initiator's LOOP ID, hence we can't find 3163 * the session and, so, the command. 3164 */ 3165 return -EAGAIN; 3166 } else 3167 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3168 3169 pkt->handle = make_handle(qpair->req->id, h); 3170 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3171 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3172 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3173 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3174 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3175 3176 /* silence compile warning */ 3177 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3178 pkt->ox_id = cpu_to_le16(t16); 3179 3180 t16 = (atio->u.isp24.attr << 9); 3181 pkt->flags |= cpu_to_le16(t16); 3182 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3183 3184 /* Set transfer direction */ 3185 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3186 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3187 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3188 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3189 3190 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3191 /* Fibre channel byte count */ 3192 pkt->transfer_length = cpu_to_le32(transfer_length); 3193 3194 /* ----- CRC context -------- */ 3195 3196 /* Allocate CRC context from global pool */ 3197 crc_ctx_pkt = cmd->ctx = 3198 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3199 3200 if (!crc_ctx_pkt) 3201 goto crc_queuing_error; 3202 3203 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3204 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3205 3206 /* Set handle */ 3207 crc_ctx_pkt->handle = pkt->handle; 3208 3209 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3210 3211 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3212 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3213 3214 if (!bundling) { 3215 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3216 } else { 3217 /* 3218 * Configure Bundling if we need to fetch interlaving 3219 * protection PCI accesses 3220 */ 3221 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3222 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3223 crc_ctx_pkt->u.bundling.dseg_count = 3224 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3225 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3226 } 3227 3228 /* Finish the common fields of CRC pkt */ 3229 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3230 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3231 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3232 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3233 3234 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3235 tc.vha = vha; 3236 tc.blk_sz = cmd->blk_sz; 3237 tc.bufflen = cmd->bufflen; 3238 tc.sg = cmd->sg; 3239 tc.prot_sg = cmd->prot_sg; 3240 tc.ctx = crc_ctx_pkt; 3241 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3242 3243 /* Walks data segments */ 3244 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3245 3246 if (!bundling && prm->prot_seg_cnt) { 3247 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3248 prm->tot_dsds, &tc)) 3249 goto crc_queuing_error; 3250 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3251 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3252 goto crc_queuing_error; 3253 3254 if (bundling && prm->prot_seg_cnt) { 3255 /* Walks dif segments */ 3256 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3257 3258 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3259 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3260 prm->prot_seg_cnt, cmd)) 3261 goto crc_queuing_error; 3262 } 3263 return QLA_SUCCESS; 3264 3265 crc_queuing_error: 3266 /* Cleanup will be performed by the caller */ 3267 qpair->req->outstanding_cmds[h] = NULL; 3268 3269 return QLA_FUNCTION_FAILED; 3270 } 3271 3272 /* 3273 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3274 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3275 */ 3276 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3277 uint8_t scsi_status) 3278 { 3279 struct scsi_qla_host *vha = cmd->vha; 3280 struct qla_qpair *qpair = cmd->qpair; 3281 struct ctio7_to_24xx *pkt; 3282 struct qla_tgt_prm prm; 3283 uint32_t full_req_cnt = 0; 3284 unsigned long flags = 0; 3285 int res; 3286 3287 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3288 (cmd->sess && cmd->sess->deleted)) { 3289 cmd->state = QLA_TGT_STATE_PROCESSED; 3290 return 0; 3291 } 3292 3293 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3294 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3295 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3296 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3297 &cmd->se_cmd, qpair->id); 3298 3299 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3300 &full_req_cnt); 3301 if (unlikely(res != 0)) { 3302 return res; 3303 } 3304 3305 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3306 3307 if (xmit_type == QLA_TGT_XMIT_STATUS) 3308 qpair->tgt_counters.core_qla_snd_status++; 3309 else 3310 qpair->tgt_counters.core_qla_que_buf++; 3311 3312 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3313 /* 3314 * Either the port is not online or this request was from 3315 * previous life, just abort the processing. 3316 */ 3317 cmd->state = QLA_TGT_STATE_PROCESSED; 3318 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3319 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3320 vha->flags.online, qla2x00_reset_active(vha), 3321 cmd->reset_count, qpair->chip_reset); 3322 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3323 return 0; 3324 } 3325 3326 /* Does F/W have an IOCBs for this request */ 3327 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3328 if (unlikely(res)) 3329 goto out_unmap_unlock; 3330 3331 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3332 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3333 else 3334 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3335 if (unlikely(res != 0)) { 3336 qpair->req->cnt += full_req_cnt; 3337 goto out_unmap_unlock; 3338 } 3339 3340 pkt = (struct ctio7_to_24xx *)prm.pkt; 3341 3342 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3343 pkt->u.status0.flags |= 3344 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3345 CTIO7_FLAGS_STATUS_MODE_0); 3346 3347 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3348 qlt_load_data_segments(&prm); 3349 3350 if (prm.add_status_pkt == 0) { 3351 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3352 pkt->u.status0.scsi_status = 3353 cpu_to_le16(prm.rq_result); 3354 if (!cmd->edif) 3355 pkt->u.status0.residual = 3356 cpu_to_le32(prm.residual); 3357 3358 pkt->u.status0.flags |= cpu_to_le16( 3359 CTIO7_FLAGS_SEND_STATUS); 3360 if (qlt_need_explicit_conf(cmd, 0)) { 3361 pkt->u.status0.flags |= 3362 cpu_to_le16( 3363 CTIO7_FLAGS_EXPLICIT_CONFORM | 3364 CTIO7_FLAGS_CONFORM_REQ); 3365 } 3366 } 3367 3368 } else { 3369 /* 3370 * We have already made sure that there is sufficient 3371 * amount of request entries to not drop HW lock in 3372 * req_pkt(). 3373 */ 3374 struct ctio7_to_24xx *ctio = 3375 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3376 qpair->req); 3377 3378 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3379 "Building additional status packet 0x%p.\n", 3380 ctio); 3381 3382 /* 3383 * T10Dif: ctio_crc2_to_fw overlay ontop of 3384 * ctio7_to_24xx 3385 */ 3386 memcpy(ctio, pkt, sizeof(*ctio)); 3387 /* reset back to CTIO7 */ 3388 ctio->entry_count = 1; 3389 ctio->entry_type = CTIO_TYPE7; 3390 ctio->dseg_count = 0; 3391 ctio->u.status1.flags &= ~cpu_to_le16( 3392 CTIO7_FLAGS_DATA_IN); 3393 3394 /* Real finish is ctio_m1's finish */ 3395 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3396 pkt->u.status0.flags |= cpu_to_le16( 3397 CTIO7_FLAGS_DONT_RET_CTIO); 3398 3399 /* qlt_24xx_init_ctio_to_isp will correct 3400 * all neccessary fields that's part of CTIO7. 3401 * There should be no residual of CTIO-CRC2 data. 3402 */ 3403 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3404 &prm); 3405 } 3406 } else 3407 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3408 3409 3410 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3411 cmd->cmd_sent_to_fw = 1; 3412 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3413 3414 /* Memory Barrier */ 3415 wmb(); 3416 if (qpair->reqq_start_iocbs) 3417 qpair->reqq_start_iocbs(qpair); 3418 else 3419 qla2x00_start_iocbs(vha, qpair->req); 3420 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3421 3422 return 0; 3423 3424 out_unmap_unlock: 3425 qlt_unmap_sg(vha, cmd); 3426 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3427 3428 return res; 3429 } 3430 EXPORT_SYMBOL(qlt_xmit_response); 3431 3432 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3433 { 3434 struct ctio7_to_24xx *pkt; 3435 struct scsi_qla_host *vha = cmd->vha; 3436 struct qla_tgt *tgt = cmd->tgt; 3437 struct qla_tgt_prm prm; 3438 unsigned long flags = 0; 3439 int res = 0; 3440 struct qla_qpair *qpair = cmd->qpair; 3441 3442 memset(&prm, 0, sizeof(prm)); 3443 prm.cmd = cmd; 3444 prm.tgt = tgt; 3445 prm.sg = NULL; 3446 prm.req_cnt = 1; 3447 3448 /* Calculate number of entries and segments required */ 3449 if (qlt_pci_map_calc_cnt(&prm) != 0) 3450 return -EAGAIN; 3451 3452 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3453 (cmd->sess && cmd->sess->deleted)) { 3454 /* 3455 * Either the port is not online or this request was from 3456 * previous life, just abort the processing. 3457 */ 3458 cmd->aborted = 1; 3459 cmd->write_data_transferred = 0; 3460 cmd->state = QLA_TGT_STATE_DATA_IN; 3461 vha->hw->tgt.tgt_ops->handle_data(cmd); 3462 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3463 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3464 vha->flags.online, qla2x00_reset_active(vha), 3465 cmd->reset_count, qpair->chip_reset); 3466 return 0; 3467 } 3468 3469 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3470 /* Does F/W have an IOCBs for this request */ 3471 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3472 if (res != 0) 3473 goto out_unlock_free_unmap; 3474 if (cmd->se_cmd.prot_op) 3475 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3476 else 3477 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3478 3479 if (unlikely(res != 0)) { 3480 qpair->req->cnt += prm.req_cnt; 3481 goto out_unlock_free_unmap; 3482 } 3483 3484 pkt = (struct ctio7_to_24xx *)prm.pkt; 3485 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3486 CTIO7_FLAGS_STATUS_MODE_0); 3487 3488 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3489 qlt_load_data_segments(&prm); 3490 3491 cmd->state = QLA_TGT_STATE_NEED_DATA; 3492 cmd->cmd_sent_to_fw = 1; 3493 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3494 3495 /* Memory Barrier */ 3496 wmb(); 3497 if (qpair->reqq_start_iocbs) 3498 qpair->reqq_start_iocbs(qpair); 3499 else 3500 qla2x00_start_iocbs(vha, qpair->req); 3501 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3502 3503 return res; 3504 3505 out_unlock_free_unmap: 3506 qlt_unmap_sg(vha, cmd); 3507 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3508 3509 return res; 3510 } 3511 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3512 3513 3514 /* 3515 * it is assumed either hardware_lock or qpair lock is held. 3516 */ 3517 static void 3518 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3519 struct ctio_crc_from_fw *sts) 3520 { 3521 uint8_t *ap = &sts->actual_dif[0]; 3522 uint8_t *ep = &sts->expected_dif[0]; 3523 uint64_t lba = cmd->se_cmd.t_task_lba; 3524 uint8_t scsi_status, sense_key, asc, ascq; 3525 unsigned long flags; 3526 struct scsi_qla_host *vha = cmd->vha; 3527 3528 cmd->trc_flags |= TRC_DIF_ERR; 3529 3530 cmd->a_guard = get_unaligned_be16(ap + 0); 3531 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3532 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3533 3534 cmd->e_guard = get_unaligned_be16(ep + 0); 3535 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3536 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3537 3538 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3539 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3540 3541 scsi_status = sense_key = asc = ascq = 0; 3542 3543 /* check appl tag */ 3544 if (cmd->e_app_tag != cmd->a_app_tag) { 3545 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3546 "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]", 3547 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3548 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3549 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3550 cmd->atio.u.isp24.fcp_hdr.ox_id); 3551 3552 cmd->dif_err_code = DIF_ERR_APP; 3553 scsi_status = SAM_STAT_CHECK_CONDITION; 3554 sense_key = ABORTED_COMMAND; 3555 asc = 0x10; 3556 ascq = 0x2; 3557 } 3558 3559 /* check ref tag */ 3560 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3561 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3562 "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] ", 3563 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3564 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3565 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3566 cmd->atio.u.isp24.fcp_hdr.ox_id); 3567 3568 cmd->dif_err_code = DIF_ERR_REF; 3569 scsi_status = SAM_STAT_CHECK_CONDITION; 3570 sense_key = ABORTED_COMMAND; 3571 asc = 0x10; 3572 ascq = 0x3; 3573 goto out; 3574 } 3575 3576 /* check guard */ 3577 if (cmd->e_guard != cmd->a_guard) { 3578 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3579 "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]", 3580 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3581 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3582 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3583 cmd->atio.u.isp24.fcp_hdr.ox_id); 3584 3585 cmd->dif_err_code = DIF_ERR_GRD; 3586 scsi_status = SAM_STAT_CHECK_CONDITION; 3587 sense_key = ABORTED_COMMAND; 3588 asc = 0x10; 3589 ascq = 0x1; 3590 } 3591 out: 3592 switch (cmd->state) { 3593 case QLA_TGT_STATE_NEED_DATA: 3594 /* handle_data will load DIF error code */ 3595 cmd->state = QLA_TGT_STATE_DATA_IN; 3596 vha->hw->tgt.tgt_ops->handle_data(cmd); 3597 break; 3598 default: 3599 spin_lock_irqsave(&cmd->cmd_lock, flags); 3600 if (cmd->aborted) { 3601 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3602 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3603 break; 3604 } 3605 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3606 3607 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3608 ascq); 3609 /* assume scsi status gets out on the wire. 3610 * Will not wait for completion. 3611 */ 3612 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3613 break; 3614 } 3615 } 3616 3617 /* If hardware_lock held on entry, might drop it, then reaquire */ 3618 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3619 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3620 struct imm_ntfy_from_isp *ntfy) 3621 { 3622 struct nack_to_isp *nack; 3623 struct qla_hw_data *ha = vha->hw; 3624 request_t *pkt; 3625 int ret = 0; 3626 3627 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3628 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3629 3630 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3631 if (pkt == NULL) { 3632 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3633 "qla_target(%d): %s failed: unable to allocate " 3634 "request packet\n", vha->vp_idx, __func__); 3635 return -ENOMEM; 3636 } 3637 3638 pkt->entry_type = NOTIFY_ACK_TYPE; 3639 pkt->entry_count = 1; 3640 pkt->handle = QLA_TGT_SKIP_HANDLE; 3641 3642 nack = (struct nack_to_isp *)pkt; 3643 nack->ox_id = ntfy->ox_id; 3644 3645 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3646 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3647 nack->u.isp24.flags = ntfy->u.isp24.flags & 3648 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3649 } 3650 3651 /* terminate */ 3652 nack->u.isp24.flags |= 3653 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3654 3655 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3656 nack->u.isp24.status = ntfy->u.isp24.status; 3657 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3658 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3659 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3660 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3661 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3662 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3663 3664 qla2x00_start_iocbs(vha, vha->req); 3665 return ret; 3666 } 3667 3668 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3669 struct imm_ntfy_from_isp *imm, int ha_locked) 3670 { 3671 int rc; 3672 3673 WARN_ON_ONCE(!ha_locked); 3674 rc = __qlt_send_term_imm_notif(vha, imm); 3675 pr_debug("rc = %d\n", rc); 3676 } 3677 3678 /* 3679 * If hardware_lock held on entry, might drop it, then reaquire 3680 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3681 */ 3682 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3683 struct qla_tgt_cmd *cmd, 3684 struct atio_from_isp *atio) 3685 { 3686 struct scsi_qla_host *vha = qpair->vha; 3687 struct ctio7_to_24xx *ctio24; 3688 struct qla_hw_data *ha = vha->hw; 3689 request_t *pkt; 3690 int ret = 0; 3691 uint16_t temp; 3692 3693 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3694 3695 if (cmd) 3696 vha = cmd->vha; 3697 3698 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3699 if (pkt == NULL) { 3700 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3701 "qla_target(%d): %s failed: unable to allocate " 3702 "request packet\n", vha->vp_idx, __func__); 3703 return -ENOMEM; 3704 } 3705 3706 if (cmd != NULL) { 3707 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3708 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3709 "qla_target(%d): Terminating cmd %p with " 3710 "incorrect state %d\n", vha->vp_idx, cmd, 3711 cmd->state); 3712 } else 3713 ret = 1; 3714 } 3715 3716 qpair->tgt_counters.num_term_xchg_sent++; 3717 pkt->entry_count = 1; 3718 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3719 3720 ctio24 = (struct ctio7_to_24xx *)pkt; 3721 ctio24->entry_type = CTIO_TYPE7; 3722 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3723 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3724 ctio24->vp_index = vha->vp_idx; 3725 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3726 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3727 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3728 CTIO7_FLAGS_TERMINATE; 3729 ctio24->u.status1.flags = cpu_to_le16(temp); 3730 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3731 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3732 3733 /* Memory Barrier */ 3734 wmb(); 3735 if (qpair->reqq_start_iocbs) 3736 qpair->reqq_start_iocbs(qpair); 3737 else 3738 qla2x00_start_iocbs(vha, qpair->req); 3739 return ret; 3740 } 3741 3742 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3743 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3744 int ul_abort) 3745 { 3746 struct scsi_qla_host *vha; 3747 unsigned long flags = 0; 3748 int rc; 3749 3750 /* why use different vha? NPIV */ 3751 if (cmd) 3752 vha = cmd->vha; 3753 else 3754 vha = qpair->vha; 3755 3756 if (ha_locked) { 3757 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3758 if (rc == -ENOMEM) 3759 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3760 goto done; 3761 } 3762 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3763 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3764 if (rc == -ENOMEM) 3765 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3766 3767 done: 3768 if (cmd && !ul_abort && !cmd->aborted) { 3769 if (cmd->sg_mapped) 3770 qlt_unmap_sg(vha, cmd); 3771 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3772 } 3773 3774 if (!ha_locked) 3775 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3776 3777 return; 3778 } 3779 3780 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3781 { 3782 struct list_head free_list; 3783 struct qla_tgt_cmd *cmd, *tcmd; 3784 3785 vha->hw->tgt.leak_exchg_thresh_hold = 3786 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3787 3788 cmd = tcmd = NULL; 3789 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3790 INIT_LIST_HEAD(&free_list); 3791 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3792 3793 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3794 list_del(&cmd->cmd_list); 3795 /* This cmd was never sent to TCM. There is no need 3796 * to schedule free or call free_cmd 3797 */ 3798 qlt_free_cmd(cmd); 3799 vha->hw->tgt.num_qfull_cmds_alloc--; 3800 } 3801 } 3802 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3803 } 3804 3805 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3806 { 3807 uint32_t total_leaked; 3808 3809 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3810 3811 if (vha->hw->tgt.leak_exchg_thresh_hold && 3812 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3813 3814 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3815 "Chip reset due to exchange starvation: %d/%d.\n", 3816 total_leaked, vha->hw->cur_fw_xcb_count); 3817 3818 if (IS_P3P_TYPE(vha->hw)) 3819 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3820 else 3821 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3822 qla2xxx_wake_dpc(vha); 3823 } 3824 3825 } 3826 3827 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3828 { 3829 struct qla_tgt *tgt = cmd->tgt; 3830 struct scsi_qla_host *vha = tgt->vha; 3831 struct se_cmd *se_cmd = &cmd->se_cmd; 3832 unsigned long flags; 3833 3834 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3835 "qla_target(%d): terminating exchange for aborted cmd=%p " 3836 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3837 se_cmd->tag); 3838 3839 spin_lock_irqsave(&cmd->cmd_lock, flags); 3840 if (cmd->aborted) { 3841 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3842 /* 3843 * It's normal to see 2 calls in this path: 3844 * 1) XFER Rdy completion + CMD_T_ABORT 3845 * 2) TCM TMR - drain_state_list 3846 */ 3847 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3848 "multiple abort. %p transport_state %x, t_state %x, " 3849 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3850 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3851 return -EIO; 3852 } 3853 cmd->aborted = 1; 3854 cmd->trc_flags |= TRC_ABORT; 3855 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3856 3857 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3858 return 0; 3859 } 3860 EXPORT_SYMBOL(qlt_abort_cmd); 3861 3862 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3863 { 3864 struct fc_port *sess = cmd->sess; 3865 3866 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3867 "%s: se_cmd[%p] ox_id %04x\n", 3868 __func__, &cmd->se_cmd, 3869 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3870 3871 BUG_ON(cmd->cmd_in_wq); 3872 3873 if (cmd->sg_mapped) 3874 qlt_unmap_sg(cmd->vha, cmd); 3875 3876 if (!cmd->q_full) 3877 qlt_decr_num_pend_cmds(cmd->vha); 3878 3879 BUG_ON(cmd->sg_mapped); 3880 cmd->jiffies_at_free = get_jiffies_64(); 3881 if (unlikely(cmd->free_sg)) 3882 kfree(cmd->sg); 3883 3884 if (!sess || !sess->se_sess) { 3885 WARN_ON(1); 3886 return; 3887 } 3888 cmd->jiffies_at_free = get_jiffies_64(); 3889 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3890 } 3891 EXPORT_SYMBOL(qlt_free_cmd); 3892 3893 /* 3894 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3895 */ 3896 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3897 struct qla_tgt_cmd *cmd, uint32_t status) 3898 { 3899 int term = 0; 3900 struct scsi_qla_host *vha = qpair->vha; 3901 3902 if (cmd->se_cmd.prot_op) 3903 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3904 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3905 "se_cmd=%p tag[%x] op %#x/%s", 3906 cmd->lba, cmd->lba, 3907 cmd->num_blks, &cmd->se_cmd, 3908 cmd->atio.u.isp24.exchange_addr, 3909 cmd->se_cmd.prot_op, 3910 prot_op_str(cmd->se_cmd.prot_op)); 3911 3912 if (ctio != NULL) { 3913 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3914 3915 term = !(c->flags & 3916 cpu_to_le16(OF_TERM_EXCH)); 3917 } else 3918 term = 1; 3919 3920 if (term) 3921 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3922 3923 return term; 3924 } 3925 3926 3927 /* ha->hardware_lock supposed to be held on entry */ 3928 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3929 struct rsp_que *rsp, uint32_t handle, void *ctio) 3930 { 3931 void *cmd = NULL; 3932 struct req_que *req; 3933 int qid = GET_QID(handle); 3934 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3935 3936 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3937 return NULL; 3938 3939 if (qid == rsp->req->id) { 3940 req = rsp->req; 3941 } else if (vha->hw->req_q_map[qid]) { 3942 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3943 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3944 vha->vp_idx, rsp->id, handle); 3945 req = vha->hw->req_q_map[qid]; 3946 } else { 3947 return NULL; 3948 } 3949 3950 h &= QLA_CMD_HANDLE_MASK; 3951 3952 if (h != QLA_TGT_NULL_HANDLE) { 3953 if (unlikely(h >= req->num_outstanding_cmds)) { 3954 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3955 "qla_target(%d): Wrong handle %x received\n", 3956 vha->vp_idx, handle); 3957 return NULL; 3958 } 3959 3960 cmd = req->outstanding_cmds[h]; 3961 if (unlikely(cmd == NULL)) { 3962 ql_dbg(ql_dbg_async, vha, 0xe053, 3963 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3964 vha->vp_idx, handle, req->id, rsp->id); 3965 return NULL; 3966 } 3967 req->outstanding_cmds[h] = NULL; 3968 } else if (ctio != NULL) { 3969 /* We can't get loop ID from CTIO7 */ 3970 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3971 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3972 "support NULL handles\n", vha->vp_idx); 3973 return NULL; 3974 } 3975 3976 return cmd; 3977 } 3978 3979 /* 3980 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3981 */ 3982 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3983 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3984 { 3985 struct qla_hw_data *ha = vha->hw; 3986 struct se_cmd *se_cmd; 3987 struct qla_tgt_cmd *cmd; 3988 struct qla_qpair *qpair = rsp->qpair; 3989 3990 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3991 /* That could happen only in case of an error/reset/abort */ 3992 if (status != CTIO_SUCCESS) { 3993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3994 "Intermediate CTIO received" 3995 " (status %x)\n", status); 3996 } 3997 return; 3998 } 3999 4000 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 4001 if (cmd == NULL) 4002 return; 4003 4004 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 4005 cmd->sess) { 4006 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 4007 (struct ctio7_from_24xx *)ctio); 4008 } 4009 4010 se_cmd = &cmd->se_cmd; 4011 cmd->cmd_sent_to_fw = 0; 4012 4013 qlt_unmap_sg(vha, cmd); 4014 4015 if (unlikely(status != CTIO_SUCCESS)) { 4016 switch (status & 0xFFFF) { 4017 case CTIO_INVALID_RX_ID: 4018 if (printk_ratelimit()) 4019 dev_info(&vha->hw->pdev->dev, 4020 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4021 vha->vp_idx, cmd->atio.u.isp24.attr, 4022 ((cmd->ctio_flags >> 9) & 0xf), 4023 cmd->ctio_flags); 4024 4025 break; 4026 case CTIO_LIP_RESET: 4027 case CTIO_TARGET_RESET: 4028 case CTIO_ABORTED: 4029 /* driver request abort via Terminate exchange */ 4030 case CTIO_TIMEOUT: 4031 /* They are OK */ 4032 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4033 "qla_target(%d): CTIO with " 4034 "status %#x received, state %x, se_cmd %p, " 4035 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4036 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4037 status, cmd->state, se_cmd); 4038 break; 4039 4040 case CTIO_PORT_LOGGED_OUT: 4041 case CTIO_PORT_UNAVAILABLE: 4042 { 4043 int logged_out = 4044 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4045 4046 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4047 "qla_target(%d): CTIO with %s status %x " 4048 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4049 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4050 status, cmd->state, se_cmd); 4051 4052 if (logged_out && cmd->sess) { 4053 /* 4054 * Session is already logged out, but we need 4055 * to notify initiator, who's not aware of this 4056 */ 4057 cmd->sess->send_els_logo = 1; 4058 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4059 "%s %d %8phC post del sess\n", 4060 __func__, __LINE__, cmd->sess->port_name); 4061 4062 qlt_schedule_sess_for_deletion(cmd->sess); 4063 } 4064 break; 4065 } 4066 case CTIO_DIF_ERROR: { 4067 struct ctio_crc_from_fw *crc = 4068 (struct ctio_crc_from_fw *)ctio; 4069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4070 "qla_target(%d): CTIO with DIF_ERROR status %x " 4071 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4072 "expect_dif[0x%llx]\n", 4073 vha->vp_idx, status, cmd->state, se_cmd, 4074 *((u64 *)&crc->actual_dif[0]), 4075 *((u64 *)&crc->expected_dif[0])); 4076 4077 qlt_handle_dif_error(qpair, cmd, ctio); 4078 return; 4079 } 4080 4081 case CTIO_FAST_AUTH_ERR: 4082 case CTIO_FAST_INCOMP_PAD_LEN: 4083 case CTIO_FAST_INVALID_REQ: 4084 case CTIO_FAST_SPI_ERR: 4085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4086 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4087 vha->vp_idx, status, cmd->state, se_cmd); 4088 break; 4089 4090 default: 4091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4092 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4093 vha->vp_idx, status, cmd->state, se_cmd); 4094 break; 4095 } 4096 4097 4098 /* "cmd->aborted" means 4099 * cmd is already aborted/terminated, we don't 4100 * need to terminate again. The exchange is already 4101 * cleaned up/freed at FW level. Just cleanup at driver 4102 * level. 4103 */ 4104 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4105 (!cmd->aborted)) { 4106 cmd->trc_flags |= TRC_CTIO_ERR; 4107 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4108 return; 4109 } 4110 } 4111 4112 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4113 cmd->trc_flags |= TRC_CTIO_DONE; 4114 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4115 cmd->state = QLA_TGT_STATE_DATA_IN; 4116 4117 if (status == CTIO_SUCCESS) 4118 cmd->write_data_transferred = 1; 4119 4120 ha->tgt.tgt_ops->handle_data(cmd); 4121 return; 4122 } else if (cmd->aborted) { 4123 cmd->trc_flags |= TRC_CTIO_ABORTED; 4124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4125 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4126 } else { 4127 cmd->trc_flags |= TRC_CTIO_STRANGE; 4128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4129 "qla_target(%d): A command in state (%d) should " 4130 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4131 } 4132 4133 if (unlikely(status != CTIO_SUCCESS) && 4134 !cmd->aborted) { 4135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4136 dump_stack(); 4137 } 4138 4139 ha->tgt.tgt_ops->free_cmd(cmd); 4140 } 4141 4142 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4143 uint8_t task_codes) 4144 { 4145 int fcp_task_attr; 4146 4147 switch (task_codes) { 4148 case ATIO_SIMPLE_QUEUE: 4149 fcp_task_attr = TCM_SIMPLE_TAG; 4150 break; 4151 case ATIO_HEAD_OF_QUEUE: 4152 fcp_task_attr = TCM_HEAD_TAG; 4153 break; 4154 case ATIO_ORDERED_QUEUE: 4155 fcp_task_attr = TCM_ORDERED_TAG; 4156 break; 4157 case ATIO_ACA_QUEUE: 4158 fcp_task_attr = TCM_ACA_TAG; 4159 break; 4160 case ATIO_UNTAGGED: 4161 fcp_task_attr = TCM_SIMPLE_TAG; 4162 break; 4163 default: 4164 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4165 "qla_target: unknown task code %x, use ORDERED instead\n", 4166 task_codes); 4167 fcp_task_attr = TCM_ORDERED_TAG; 4168 break; 4169 } 4170 4171 return fcp_task_attr; 4172 } 4173 4174 /* 4175 * Process context for I/O path into tcm_qla2xxx code 4176 */ 4177 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4178 { 4179 scsi_qla_host_t *vha = cmd->vha; 4180 struct qla_hw_data *ha = vha->hw; 4181 struct fc_port *sess = cmd->sess; 4182 struct atio_from_isp *atio = &cmd->atio; 4183 unsigned char *cdb; 4184 unsigned long flags; 4185 uint32_t data_length; 4186 int ret, fcp_task_attr, data_dir, bidi = 0; 4187 struct qla_qpair *qpair = cmd->qpair; 4188 4189 cmd->cmd_in_wq = 0; 4190 cmd->trc_flags |= TRC_DO_WORK; 4191 4192 if (cmd->aborted) { 4193 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4194 "cmd with tag %u is aborted\n", 4195 cmd->atio.u.isp24.exchange_addr); 4196 goto out_term; 4197 } 4198 4199 spin_lock_init(&cmd->cmd_lock); 4200 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4201 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4202 4203 if (atio->u.isp24.fcp_cmnd.rddata && 4204 atio->u.isp24.fcp_cmnd.wrdata) { 4205 bidi = 1; 4206 data_dir = DMA_TO_DEVICE; 4207 } else if (atio->u.isp24.fcp_cmnd.rddata) 4208 data_dir = DMA_FROM_DEVICE; 4209 else if (atio->u.isp24.fcp_cmnd.wrdata) 4210 data_dir = DMA_TO_DEVICE; 4211 else 4212 data_dir = DMA_NONE; 4213 4214 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4215 atio->u.isp24.fcp_cmnd.task_attr); 4216 data_length = get_datalen_for_atio(atio); 4217 4218 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4219 fcp_task_attr, data_dir, bidi); 4220 if (ret != 0) 4221 goto out_term; 4222 /* 4223 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4224 */ 4225 ha->tgt.tgt_ops->put_sess(sess); 4226 return; 4227 4228 out_term: 4229 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4230 /* 4231 * cmd has not sent to target yet, so pass NULL as the second 4232 * argument to qlt_send_term_exchange() and free the memory here. 4233 */ 4234 cmd->trc_flags |= TRC_DO_WORK_ERR; 4235 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4236 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4237 4238 qlt_decr_num_pend_cmds(vha); 4239 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4240 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4241 4242 ha->tgt.tgt_ops->put_sess(sess); 4243 } 4244 4245 static void qlt_do_work(struct work_struct *work) 4246 { 4247 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4248 scsi_qla_host_t *vha = cmd->vha; 4249 unsigned long flags; 4250 4251 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4252 list_del(&cmd->cmd_list); 4253 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4254 4255 __qlt_do_work(cmd); 4256 } 4257 4258 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4259 { 4260 unsigned long flags; 4261 struct qla_hw_data *ha = vha->hw; 4262 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4263 void *node; 4264 u64 key = 0; 4265 4266 ql_log(ql_log_info, vha, 0x706c, 4267 "User update Number of Active Qpairs %d\n", 4268 ha->tgt.num_act_qpairs); 4269 4270 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4271 4272 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4273 btree_remove64(&tgt->lun_qpair_map, key); 4274 4275 ha->base_qpair->lun_cnt = 0; 4276 for (key = 0; key < ha->max_qpairs; key++) 4277 if (ha->queue_pair_map[key]) 4278 ha->queue_pair_map[key]->lun_cnt = 0; 4279 4280 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4281 } 4282 4283 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4284 struct qla_tgt_cmd *cmd) 4285 { 4286 struct qla_qpair *qpair, *qp; 4287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4288 struct qla_qpair_hint *h; 4289 4290 if (vha->flags.qpairs_available) { 4291 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4292 if (unlikely(!h)) { 4293 /* spread lun to qpair ratio evently */ 4294 int lcnt = 0, rc; 4295 struct scsi_qla_host *base_vha = 4296 pci_get_drvdata(vha->hw->pdev); 4297 4298 qpair = vha->hw->base_qpair; 4299 if (qpair->lun_cnt == 0) { 4300 qpair->lun_cnt++; 4301 h = qla_qpair_to_hint(tgt, qpair); 4302 BUG_ON(!h); 4303 rc = btree_insert64(&tgt->lun_qpair_map, 4304 cmd->unpacked_lun, h, GFP_ATOMIC); 4305 if (rc) { 4306 qpair->lun_cnt--; 4307 ql_log(ql_log_info, vha, 0xd037, 4308 "Unable to insert lun %llx into lun_qpair_map\n", 4309 cmd->unpacked_lun); 4310 } 4311 goto out; 4312 } else { 4313 lcnt = qpair->lun_cnt; 4314 } 4315 4316 h = NULL; 4317 list_for_each_entry(qp, &base_vha->qp_list, 4318 qp_list_elem) { 4319 if (qp->lun_cnt == 0) { 4320 qp->lun_cnt++; 4321 h = qla_qpair_to_hint(tgt, qp); 4322 BUG_ON(!h); 4323 rc = btree_insert64(&tgt->lun_qpair_map, 4324 cmd->unpacked_lun, h, GFP_ATOMIC); 4325 if (rc) { 4326 qp->lun_cnt--; 4327 ql_log(ql_log_info, vha, 0xd038, 4328 "Unable to insert lun %llx into lun_qpair_map\n", 4329 cmd->unpacked_lun); 4330 } 4331 qpair = qp; 4332 goto out; 4333 } else { 4334 if (qp->lun_cnt < lcnt) { 4335 lcnt = qp->lun_cnt; 4336 qpair = qp; 4337 continue; 4338 } 4339 } 4340 } 4341 BUG_ON(!qpair); 4342 qpair->lun_cnt++; 4343 h = qla_qpair_to_hint(tgt, qpair); 4344 BUG_ON(!h); 4345 rc = btree_insert64(&tgt->lun_qpair_map, 4346 cmd->unpacked_lun, h, GFP_ATOMIC); 4347 if (rc) { 4348 qpair->lun_cnt--; 4349 ql_log(ql_log_info, vha, 0xd039, 4350 "Unable to insert lun %llx into lun_qpair_map\n", 4351 cmd->unpacked_lun); 4352 } 4353 } 4354 } else { 4355 h = &tgt->qphints[0]; 4356 } 4357 out: 4358 cmd->qpair = h->qpair; 4359 cmd->se_cmd.cpuid = h->cpuid; 4360 } 4361 4362 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4363 struct fc_port *sess, 4364 struct atio_from_isp *atio) 4365 { 4366 struct qla_tgt_cmd *cmd; 4367 4368 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4369 if (!cmd) 4370 return NULL; 4371 4372 cmd->cmd_type = TYPE_TGT_CMD; 4373 memcpy(&cmd->atio, atio, sizeof(*atio)); 4374 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4375 cmd->state = QLA_TGT_STATE_NEW; 4376 cmd->tgt = vha->vha_tgt.qla_tgt; 4377 qlt_incr_num_pend_cmds(vha); 4378 cmd->vha = vha; 4379 cmd->sess = sess; 4380 cmd->loop_id = sess->loop_id; 4381 cmd->conf_compl_supported = sess->conf_compl_supported; 4382 4383 cmd->trc_flags = 0; 4384 cmd->jiffies_at_alloc = get_jiffies_64(); 4385 4386 cmd->unpacked_lun = scsilun_to_int( 4387 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4388 qlt_assign_qpair(vha, cmd); 4389 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4390 cmd->vp_idx = vha->vp_idx; 4391 cmd->edif = sess->edif.enable; 4392 4393 return cmd; 4394 } 4395 4396 /* ha->hardware_lock supposed to be held on entry */ 4397 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4398 struct atio_from_isp *atio) 4399 { 4400 struct qla_hw_data *ha = vha->hw; 4401 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4402 struct fc_port *sess; 4403 struct qla_tgt_cmd *cmd; 4404 unsigned long flags; 4405 port_id_t id; 4406 4407 if (unlikely(tgt->tgt_stop)) { 4408 ql_dbg(ql_dbg_io, vha, 0x3061, 4409 "New command while device %p is shutting down\n", tgt); 4410 return -ENODEV; 4411 } 4412 4413 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4414 if (IS_SW_RESV_ADDR(id)) 4415 return -EBUSY; 4416 4417 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4418 if (unlikely(!sess)) 4419 return -EFAULT; 4420 4421 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4422 * session deletion, but it's still in sess_del_work wq */ 4423 if (sess->deleted) { 4424 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4425 "New command while old session %p is being deleted\n", 4426 sess); 4427 return -EFAULT; 4428 } 4429 4430 /* 4431 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4432 */ 4433 if (!kref_get_unless_zero(&sess->sess_kref)) { 4434 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4435 "%s: kref_get fail, %8phC oxid %x \n", 4436 __func__, sess->port_name, 4437 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4438 return -EFAULT; 4439 } 4440 4441 cmd = qlt_get_tag(vha, sess, atio); 4442 if (!cmd) { 4443 ql_dbg(ql_dbg_io, vha, 0x3062, 4444 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4445 ha->tgt.tgt_ops->put_sess(sess); 4446 return -EBUSY; 4447 } 4448 4449 cmd->cmd_in_wq = 1; 4450 cmd->trc_flags |= TRC_NEW_CMD; 4451 4452 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4453 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4454 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4455 4456 INIT_WORK(&cmd->work, qlt_do_work); 4457 if (vha->flags.qpairs_available) { 4458 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4459 } else if (ha->msix_count) { 4460 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4461 queue_work_on(smp_processor_id(), qla_tgt_wq, 4462 &cmd->work); 4463 else 4464 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4465 &cmd->work); 4466 } else { 4467 queue_work(qla_tgt_wq, &cmd->work); 4468 } 4469 4470 return 0; 4471 } 4472 4473 /* ha->hardware_lock supposed to be held on entry */ 4474 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4475 int fn, void *iocb, int flags) 4476 { 4477 struct scsi_qla_host *vha = sess->vha; 4478 struct qla_hw_data *ha = vha->hw; 4479 struct qla_tgt_mgmt_cmd *mcmd; 4480 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4481 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4482 4483 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4484 if (!mcmd) { 4485 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4486 "qla_target(%d): Allocation of management " 4487 "command failed, some commands and their data could " 4488 "leak\n", vha->vp_idx); 4489 return -ENOMEM; 4490 } 4491 memset(mcmd, 0, sizeof(*mcmd)); 4492 mcmd->sess = sess; 4493 4494 if (iocb) { 4495 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4496 sizeof(mcmd->orig_iocb.imm_ntfy)); 4497 } 4498 mcmd->tmr_func = fn; 4499 mcmd->flags = flags; 4500 mcmd->reset_count = ha->base_qpair->chip_reset; 4501 mcmd->qpair = h->qpair; 4502 mcmd->vha = vha; 4503 mcmd->se_cmd.cpuid = h->cpuid; 4504 mcmd->unpacked_lun = lun; 4505 4506 switch (fn) { 4507 case QLA_TGT_LUN_RESET: 4508 case QLA_TGT_CLEAR_TS: 4509 case QLA_TGT_ABORT_TS: 4510 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4511 fallthrough; 4512 case QLA_TGT_CLEAR_ACA: 4513 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4514 mcmd->qpair = h->qpair; 4515 mcmd->se_cmd.cpuid = h->cpuid; 4516 break; 4517 4518 case QLA_TGT_TARGET_RESET: 4519 case QLA_TGT_NEXUS_LOSS_SESS: 4520 case QLA_TGT_NEXUS_LOSS: 4521 case QLA_TGT_ABORT_ALL: 4522 default: 4523 /* no-op */ 4524 break; 4525 } 4526 4527 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4528 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4529 &mcmd->work); 4530 4531 return 0; 4532 } 4533 4534 /* ha->hardware_lock supposed to be held on entry */ 4535 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4536 { 4537 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4538 struct qla_hw_data *ha = vha->hw; 4539 struct fc_port *sess; 4540 u64 unpacked_lun; 4541 int fn; 4542 unsigned long flags; 4543 4544 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4545 4546 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4547 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4548 a->u.isp24.fcp_hdr.s_id); 4549 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4550 4551 unpacked_lun = 4552 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4553 4554 if (sess == NULL || sess->deleted) 4555 return -EFAULT; 4556 4557 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4558 } 4559 4560 /* ha->hardware_lock supposed to be held on entry */ 4561 static int __qlt_abort_task(struct scsi_qla_host *vha, 4562 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4563 { 4564 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4565 struct qla_hw_data *ha = vha->hw; 4566 struct qla_tgt_mgmt_cmd *mcmd; 4567 u64 unpacked_lun; 4568 int rc; 4569 4570 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4571 if (mcmd == NULL) { 4572 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4573 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4574 vha->vp_idx, __func__); 4575 return -ENOMEM; 4576 } 4577 memset(mcmd, 0, sizeof(*mcmd)); 4578 4579 mcmd->sess = sess; 4580 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4581 sizeof(mcmd->orig_iocb.imm_ntfy)); 4582 4583 unpacked_lun = 4584 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4585 mcmd->reset_count = ha->base_qpair->chip_reset; 4586 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4587 mcmd->qpair = ha->base_qpair; 4588 4589 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4590 le16_to_cpu(iocb->u.isp2x.seq_id)); 4591 if (rc != 0) { 4592 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4593 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4594 vha->vp_idx, rc); 4595 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4596 return -EFAULT; 4597 } 4598 4599 return 0; 4600 } 4601 4602 /* ha->hardware_lock supposed to be held on entry */ 4603 static int qlt_abort_task(struct scsi_qla_host *vha, 4604 struct imm_ntfy_from_isp *iocb) 4605 { 4606 struct qla_hw_data *ha = vha->hw; 4607 struct fc_port *sess; 4608 int loop_id; 4609 unsigned long flags; 4610 4611 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4612 4613 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4614 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4615 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4616 4617 if (sess == NULL) { 4618 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4619 "qla_target(%d): task abort for unexisting " 4620 "session\n", vha->vp_idx); 4621 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4622 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4623 } 4624 4625 return __qlt_abort_task(vha, iocb, sess); 4626 } 4627 4628 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4629 { 4630 if (rc != MBS_COMMAND_COMPLETE) { 4631 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4632 "%s: se_sess %p / sess %p from" 4633 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4634 " LOGO failed: %#x\n", 4635 __func__, 4636 fcport->se_sess, 4637 fcport, 4638 fcport->port_name, fcport->loop_id, 4639 fcport->d_id.b.domain, fcport->d_id.b.area, 4640 fcport->d_id.b.al_pa, rc); 4641 } 4642 4643 fcport->logout_completed = 1; 4644 } 4645 4646 /* 4647 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4648 * 4649 * Schedules sessions with matching port_id/loop_id but different wwn for 4650 * deletion. Returns existing session with matching wwn if present. 4651 * Null otherwise. 4652 */ 4653 struct fc_port * 4654 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4655 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4656 { 4657 struct fc_port *sess = NULL, *other_sess; 4658 uint64_t other_wwn; 4659 4660 *conflict_sess = NULL; 4661 4662 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4663 4664 other_wwn = wwn_to_u64(other_sess->port_name); 4665 4666 if (wwn == other_wwn) { 4667 WARN_ON(sess); 4668 sess = other_sess; 4669 continue; 4670 } 4671 4672 /* find other sess with nport_id collision */ 4673 if (port_id.b24 == other_sess->d_id.b24) { 4674 if (loop_id != other_sess->loop_id) { 4675 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4676 "Invalidating sess %p loop_id %d wwn %llx.\n", 4677 other_sess, other_sess->loop_id, other_wwn); 4678 4679 /* 4680 * logout_on_delete is set by default, but another 4681 * session that has the same s_id/loop_id combo 4682 * might have cleared it when requested this session 4683 * deletion, so don't touch it 4684 */ 4685 qlt_schedule_sess_for_deletion(other_sess); 4686 } else { 4687 /* 4688 * Another wwn used to have our s_id/loop_id 4689 * kill the session, but don't free the loop_id 4690 */ 4691 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4692 "Invalidating sess %p loop_id %d wwn %llx.\n", 4693 other_sess, other_sess->loop_id, other_wwn); 4694 4695 other_sess->keep_nport_handle = 1; 4696 if (other_sess->disc_state != DSC_DELETED) 4697 *conflict_sess = other_sess; 4698 qlt_schedule_sess_for_deletion(other_sess); 4699 } 4700 continue; 4701 } 4702 4703 /* find other sess with nport handle collision */ 4704 if ((loop_id == other_sess->loop_id) && 4705 (loop_id != FC_NO_LOOP_ID)) { 4706 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4707 "Invalidating sess %p loop_id %d wwn %llx.\n", 4708 other_sess, other_sess->loop_id, other_wwn); 4709 4710 /* Same loop_id but different s_id 4711 * Ok to kill and logout */ 4712 qlt_schedule_sess_for_deletion(other_sess); 4713 } 4714 } 4715 4716 return sess; 4717 } 4718 4719 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4720 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4721 { 4722 struct qla_tgt_sess_op *op; 4723 struct qla_tgt_cmd *cmd; 4724 uint32_t key; 4725 int count = 0; 4726 unsigned long flags; 4727 4728 key = (((u32)s_id->b.domain << 16) | 4729 ((u32)s_id->b.area << 8) | 4730 ((u32)s_id->b.al_pa)); 4731 4732 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4733 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4734 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4735 4736 if (op_key == key) { 4737 op->aborted = true; 4738 count++; 4739 } 4740 } 4741 4742 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4743 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4744 4745 if (op_key == key) { 4746 op->aborted = true; 4747 count++; 4748 } 4749 } 4750 4751 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4752 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4753 4754 if (cmd_key == key) { 4755 cmd->aborted = 1; 4756 count++; 4757 } 4758 } 4759 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4760 4761 return count; 4762 } 4763 4764 static int qlt_handle_login(struct scsi_qla_host *vha, 4765 struct imm_ntfy_from_isp *iocb) 4766 { 4767 struct fc_port *sess = NULL, *conflict_sess = NULL; 4768 uint64_t wwn; 4769 port_id_t port_id; 4770 uint16_t loop_id, wd3_lo; 4771 int res = 0; 4772 struct qlt_plogi_ack_t *pla; 4773 unsigned long flags; 4774 4775 lockdep_assert_held(&vha->hw->hardware_lock); 4776 4777 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4778 4779 port_id.b.domain = iocb->u.isp24.port_id[2]; 4780 port_id.b.area = iocb->u.isp24.port_id[1]; 4781 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4782 port_id.b.rsvd_1 = 0; 4783 4784 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4785 4786 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4787 abort_cmds_for_s_id(vha, &port_id); 4788 4789 if (wwn) { 4790 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4791 sess = qlt_find_sess_invalidate_other(vha, wwn, 4792 port_id, loop_id, &conflict_sess); 4793 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4794 } else { 4795 ql_dbg(ql_dbg_disc, vha, 0xffff, 4796 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4797 __func__, __LINE__, loop_id, port_id.b24); 4798 qlt_send_term_imm_notif(vha, iocb, 1); 4799 goto out; 4800 } 4801 4802 if (IS_SW_RESV_ADDR(port_id)) { 4803 res = 1; 4804 goto out; 4805 } 4806 4807 if (vha->hw->flags.edif_enabled && 4808 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4809 iocb->u.isp24.status_subcode == ELS_PLOGI && 4810 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4811 ql_dbg(ql_dbg_disc, vha, 0xffff, 4812 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4813 __func__, __LINE__, loop_id, port_id.b24); 4814 qlt_send_term_imm_notif(vha, iocb, 1); 4815 goto out; 4816 } 4817 4818 if (vha->hw->flags.edif_enabled) { 4819 if (!(vha->e_dbell.db_flags & EDB_ACTIVE)) { 4820 ql_dbg(ql_dbg_disc, vha, 0xffff, 4821 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4822 __func__, __LINE__, loop_id, port_id.b24); 4823 qlt_send_term_imm_notif(vha, iocb, 1); 4824 goto out; 4825 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4826 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4827 ql_dbg(ql_dbg_disc, vha, 0xffff, 4828 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4829 __func__, __LINE__, loop_id, port_id.b24); 4830 qlt_send_term_imm_notif(vha, iocb, 1); 4831 goto out; 4832 } 4833 } 4834 4835 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4836 if (!pla) { 4837 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4838 "%s %d %8phC Term INOT due to mem alloc fail", 4839 __func__, __LINE__, 4840 iocb->u.isp24.port_name); 4841 qlt_send_term_imm_notif(vha, iocb, 1); 4842 goto out; 4843 } 4844 4845 if (conflict_sess) { 4846 conflict_sess->login_gen++; 4847 qlt_plogi_ack_link(vha, pla, conflict_sess, 4848 QLT_PLOGI_LINK_CONFLICT); 4849 } 4850 4851 if (!sess) { 4852 pla->ref_count++; 4853 ql_dbg(ql_dbg_disc, vha, 0xffff, 4854 "%s %d %8phC post new sess\n", 4855 __func__, __LINE__, iocb->u.isp24.port_name); 4856 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4857 qla24xx_post_newsess_work(vha, &port_id, 4858 iocb->u.isp24.port_name, 4859 iocb->u.isp24.u.plogi.node_name, 4860 pla, 0); 4861 else 4862 qla24xx_post_newsess_work(vha, &port_id, 4863 iocb->u.isp24.port_name, NULL, 4864 pla, 0); 4865 4866 goto out; 4867 } 4868 4869 if (sess->disc_state == DSC_UPD_FCPORT) { 4870 u16 sec; 4871 4872 /* 4873 * Remote port registration is still going on from 4874 * previous login. Allow it to finish before we 4875 * accept the new login. 4876 */ 4877 sess->next_disc_state = DSC_DELETE_PEND; 4878 sec = jiffies_to_msecs(jiffies - 4879 sess->jiffies_at_registration) / 1000; 4880 if (sess->sec_since_registration < sec && sec && 4881 !(sec % 5)) { 4882 sess->sec_since_registration = sec; 4883 ql_dbg(ql_dbg_disc, vha, 0xffff, 4884 "%s %8phC - Slow Rport registration (%d Sec)\n", 4885 __func__, sess->port_name, sec); 4886 } 4887 4888 if (!conflict_sess) { 4889 list_del(&pla->list); 4890 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4891 } 4892 4893 qlt_send_term_imm_notif(vha, iocb, 1); 4894 goto out; 4895 } 4896 4897 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4898 sess->d_id = port_id; 4899 sess->login_gen++; 4900 sess->loop_id = loop_id; 4901 4902 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4903 /* remote port has assigned Port ID */ 4904 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4905 vha->d_id = sess->d_id; 4906 4907 ql_dbg(ql_dbg_disc, vha, 0xffff, 4908 "%s %8phC - send port online\n", 4909 __func__, sess->port_name); 4910 4911 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4912 sess->d_id.b24); 4913 } 4914 4915 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4916 sess->fw_login_state = DSC_LS_PRLI_PEND; 4917 sess->local = 0; 4918 sess->loop_id = loop_id; 4919 sess->d_id = port_id; 4920 sess->fw_login_state = DSC_LS_PRLI_PEND; 4921 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4922 4923 if (wd3_lo & BIT_7) 4924 sess->conf_compl_supported = 1; 4925 4926 if ((wd3_lo & BIT_4) == 0) 4927 sess->port_type = FCT_INITIATOR; 4928 else 4929 sess->port_type = FCT_TARGET; 4930 4931 } else 4932 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4933 4934 4935 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4936 "%s %d %8phC DS %d\n", 4937 __func__, __LINE__, sess->port_name, sess->disc_state); 4938 4939 switch (sess->disc_state) { 4940 case DSC_DELETED: 4941 case DSC_LOGIN_PEND: 4942 qlt_plogi_ack_unref(vha, pla); 4943 break; 4944 4945 default: 4946 /* 4947 * Under normal circumstances we want to release nport handle 4948 * during LOGO process to avoid nport handle leaks inside FW. 4949 * The exception is when LOGO is done while another PLOGI with 4950 * the same nport handle is waiting as might be the case here. 4951 * Note: there is always a possibily of a race where session 4952 * deletion has already started for other reasons (e.g. ACL 4953 * removal) and now PLOGI arrives: 4954 * 1. if PLOGI arrived in FW after nport handle has been freed, 4955 * FW must have assigned this PLOGI a new/same handle and we 4956 * can proceed ACK'ing it as usual when session deletion 4957 * completes. 4958 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4959 * bit reached it, the handle has now been released. We'll 4960 * get an error when we ACK this PLOGI. Nothing will be sent 4961 * back to initiator. Initiator should eventually retry 4962 * PLOGI and situation will correct itself. 4963 */ 4964 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4965 (sess->d_id.b24 == port_id.b24)); 4966 4967 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4968 "%s %d %8phC post del sess\n", 4969 __func__, __LINE__, sess->port_name); 4970 4971 4972 qlt_schedule_sess_for_deletion(sess); 4973 break; 4974 } 4975 out: 4976 return res; 4977 } 4978 4979 /* 4980 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4981 */ 4982 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4983 struct imm_ntfy_from_isp *iocb) 4984 { 4985 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4986 struct qla_hw_data *ha = vha->hw; 4987 struct fc_port *sess = NULL, *conflict_sess = NULL; 4988 uint64_t wwn; 4989 port_id_t port_id; 4990 uint16_t loop_id; 4991 uint16_t wd3_lo; 4992 int res = 0; 4993 unsigned long flags; 4994 4995 lockdep_assert_held(&ha->hardware_lock); 4996 4997 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4998 4999 port_id.b.domain = iocb->u.isp24.port_id[2]; 5000 port_id.b.area = iocb->u.isp24.port_id[1]; 5001 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 5002 port_id.b.rsvd_1 = 0; 5003 5004 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 5005 5006 ql_dbg(ql_dbg_disc, vha, 0xf026, 5007 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 5008 vha->vp_idx, iocb->u.isp24.port_id[2], 5009 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 5010 iocb->u.isp24.status_subcode, loop_id, 5011 iocb->u.isp24.port_name); 5012 5013 /* res = 1 means ack at the end of thread 5014 * res = 0 means ack async/later. 5015 */ 5016 switch (iocb->u.isp24.status_subcode) { 5017 case ELS_PLOGI: 5018 res = qlt_handle_login(vha, iocb); 5019 break; 5020 5021 case ELS_PRLI: 5022 if (N2N_TOPO(ha)) { 5023 sess = qla2x00_find_fcport_by_wwpn(vha, 5024 iocb->u.isp24.port_name, 1); 5025 5026 if (vha->hw->flags.edif_enabled && sess && 5027 (!(sess->flags & FCF_FCSP_DEVICE) || 5028 !sess->edif.authok)) { 5029 ql_dbg(ql_dbg_disc, vha, 0xffff, 5030 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 5031 __func__, __LINE__, iocb->u.isp24.port_name); 5032 qlt_send_term_imm_notif(vha, iocb, 1); 5033 break; 5034 } 5035 5036 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5037 ql_dbg(ql_dbg_disc, vha, 0xffff, 5038 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5039 __func__, __LINE__, 5040 iocb->u.isp24.port_name); 5041 qlt_send_term_imm_notif(vha, iocb, 1); 5042 break; 5043 } 5044 5045 res = qlt_handle_login(vha, iocb); 5046 break; 5047 } 5048 5049 if (IS_SW_RESV_ADDR(port_id)) { 5050 res = 1; 5051 break; 5052 } 5053 5054 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5055 5056 if (wwn) { 5057 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5058 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5059 loop_id, &conflict_sess); 5060 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5061 } 5062 5063 if (conflict_sess) { 5064 switch (conflict_sess->disc_state) { 5065 case DSC_DELETED: 5066 case DSC_DELETE_PEND: 5067 break; 5068 default: 5069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5070 "PRLI with conflicting sess %p port %8phC\n", 5071 conflict_sess, conflict_sess->port_name); 5072 conflict_sess->fw_login_state = 5073 DSC_LS_PORT_UNAVAIL; 5074 qlt_send_term_imm_notif(vha, iocb, 1); 5075 res = 0; 5076 break; 5077 } 5078 } 5079 5080 if (sess != NULL) { 5081 bool delete = false; 5082 int sec; 5083 5084 if (vha->hw->flags.edif_enabled && sess && 5085 (!(sess->flags & FCF_FCSP_DEVICE) || 5086 !sess->edif.authok)) { 5087 ql_dbg(ql_dbg_disc, vha, 0xffff, 5088 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5089 __func__, __LINE__, iocb->u.isp24.port_name); 5090 qlt_send_term_imm_notif(vha, iocb, 1); 5091 break; 5092 } 5093 5094 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5095 switch (sess->fw_login_state) { 5096 case DSC_LS_PLOGI_PEND: 5097 case DSC_LS_PLOGI_COMP: 5098 case DSC_LS_PRLI_COMP: 5099 break; 5100 default: 5101 delete = true; 5102 break; 5103 } 5104 5105 switch (sess->disc_state) { 5106 case DSC_UPD_FCPORT: 5107 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5108 flags); 5109 5110 sec = jiffies_to_msecs(jiffies - 5111 sess->jiffies_at_registration)/1000; 5112 if (sess->sec_since_registration < sec && sec && 5113 !(sec % 5)) { 5114 sess->sec_since_registration = sec; 5115 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5116 "%s %8phC : Slow Rport registration(%d Sec)\n", 5117 __func__, sess->port_name, sec); 5118 } 5119 qlt_send_term_imm_notif(vha, iocb, 1); 5120 return 0; 5121 5122 case DSC_LOGIN_PEND: 5123 case DSC_GPDB: 5124 case DSC_LOGIN_COMPLETE: 5125 case DSC_ADISC: 5126 delete = false; 5127 break; 5128 default: 5129 break; 5130 } 5131 5132 if (delete) { 5133 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5134 flags); 5135 /* 5136 * Impatient initiator sent PRLI before last 5137 * PLOGI could finish. Will force him to re-try, 5138 * while last one finishes. 5139 */ 5140 ql_log(ql_log_warn, sess->vha, 0xf095, 5141 "sess %p PRLI received, before plogi ack.\n", 5142 sess); 5143 qlt_send_term_imm_notif(vha, iocb, 1); 5144 res = 0; 5145 break; 5146 } 5147 5148 /* 5149 * This shouldn't happen under normal circumstances, 5150 * since we have deleted the old session during PLOGI 5151 */ 5152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5153 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5154 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5155 5156 sess->local = 0; 5157 sess->loop_id = loop_id; 5158 sess->d_id = port_id; 5159 sess->fw_login_state = DSC_LS_PRLI_PEND; 5160 5161 if (wd3_lo & BIT_7) 5162 sess->conf_compl_supported = 1; 5163 5164 if ((wd3_lo & BIT_4) == 0) 5165 sess->port_type = FCT_INITIATOR; 5166 else 5167 sess->port_type = FCT_TARGET; 5168 5169 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5170 } 5171 res = 1; /* send notify ack */ 5172 5173 /* Make session global (not used in fabric mode) */ 5174 if (ha->current_topology != ISP_CFG_F) { 5175 if (sess) { 5176 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5177 "%s %d %8phC post nack\n", 5178 __func__, __LINE__, sess->port_name); 5179 qla24xx_post_nack_work(vha, sess, iocb, 5180 SRB_NACK_PRLI); 5181 res = 0; 5182 } else { 5183 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5184 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5185 qla2xxx_wake_dpc(vha); 5186 } 5187 } else { 5188 if (sess) { 5189 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5190 "%s %d %8phC post nack\n", 5191 __func__, __LINE__, sess->port_name); 5192 qla24xx_post_nack_work(vha, sess, iocb, 5193 SRB_NACK_PRLI); 5194 res = 0; 5195 } 5196 } 5197 break; 5198 5199 case ELS_TPRLO: 5200 if (le16_to_cpu(iocb->u.isp24.flags) & 5201 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5202 loop_id = 0xFFFF; 5203 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5204 res = 1; 5205 break; 5206 } 5207 fallthrough; 5208 case ELS_LOGO: 5209 case ELS_PRLO: 5210 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5211 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5212 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5213 5214 if (sess) { 5215 sess->login_gen++; 5216 sess->fw_login_state = DSC_LS_LOGO_PEND; 5217 sess->logo_ack_needed = 1; 5218 memcpy(sess->iocb, iocb, IOCB_SIZE); 5219 } 5220 5221 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5222 5223 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5224 "%s: logo %llx res %d sess %p ", 5225 __func__, wwn, res, sess); 5226 if (res == 0) { 5227 /* 5228 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5229 * for LOGO_ACK & sess delete 5230 */ 5231 BUG_ON(!sess); 5232 res = 0; 5233 } else { 5234 /* cmd did not go to upper layer. */ 5235 if (sess) { 5236 qlt_schedule_sess_for_deletion(sess); 5237 res = 0; 5238 } 5239 /* else logo will be ack */ 5240 } 5241 break; 5242 case ELS_PDISC: 5243 case ELS_ADISC: 5244 { 5245 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5246 5247 if (tgt->link_reinit_iocb_pending) { 5248 qlt_send_notify_ack(ha->base_qpair, 5249 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5250 tgt->link_reinit_iocb_pending = 0; 5251 } 5252 5253 sess = qla2x00_find_fcport_by_wwpn(vha, 5254 iocb->u.isp24.port_name, 1); 5255 if (sess) { 5256 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5257 "sess %p lid %d|%d DS %d LS %d\n", 5258 sess, sess->loop_id, loop_id, 5259 sess->disc_state, sess->fw_login_state); 5260 } 5261 5262 res = 1; /* send notify ack */ 5263 break; 5264 } 5265 5266 case ELS_FLOGI: /* should never happen */ 5267 default: 5268 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5269 "qla_target(%d): Unsupported ELS command %x " 5270 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5271 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5272 break; 5273 } 5274 5275 ql_dbg(ql_dbg_disc, vha, 0xf026, 5276 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5277 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5278 5279 return res; 5280 } 5281 5282 /* 5283 * ha->hardware_lock supposed to be held on entry. 5284 * Might drop it, then reacquire. 5285 */ 5286 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5287 struct imm_ntfy_from_isp *iocb) 5288 { 5289 struct qla_hw_data *ha = vha->hw; 5290 uint32_t add_flags = 0; 5291 int send_notify_ack = 1; 5292 uint16_t status; 5293 5294 lockdep_assert_held(&ha->hardware_lock); 5295 5296 status = le16_to_cpu(iocb->u.isp2x.status); 5297 switch (status) { 5298 case IMM_NTFY_LIP_RESET: 5299 { 5300 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5301 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5302 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5303 iocb->u.isp24.status_subcode); 5304 5305 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5306 send_notify_ack = 0; 5307 break; 5308 } 5309 5310 case IMM_NTFY_LIP_LINK_REINIT: 5311 { 5312 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5313 5314 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5315 "qla_target(%d): LINK REINIT (loop %#x, " 5316 "subcode %x)\n", vha->vp_idx, 5317 le16_to_cpu(iocb->u.isp24.nport_handle), 5318 iocb->u.isp24.status_subcode); 5319 if (tgt->link_reinit_iocb_pending) { 5320 qlt_send_notify_ack(ha->base_qpair, 5321 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5322 } 5323 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5324 tgt->link_reinit_iocb_pending = 1; 5325 /* 5326 * QLogic requires to wait after LINK REINIT for possible 5327 * PDISC or ADISC ELS commands 5328 */ 5329 send_notify_ack = 0; 5330 break; 5331 } 5332 5333 case IMM_NTFY_PORT_LOGOUT: 5334 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5335 "qla_target(%d): Port logout (loop " 5336 "%#x, subcode %x)\n", vha->vp_idx, 5337 le16_to_cpu(iocb->u.isp24.nport_handle), 5338 iocb->u.isp24.status_subcode); 5339 5340 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5341 send_notify_ack = 0; 5342 /* The sessions will be cleared in the callback, if needed */ 5343 break; 5344 5345 case IMM_NTFY_GLBL_TPRLO: 5346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5347 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5348 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5349 send_notify_ack = 0; 5350 /* The sessions will be cleared in the callback, if needed */ 5351 break; 5352 5353 case IMM_NTFY_PORT_CONFIG: 5354 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5355 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5356 status); 5357 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5358 send_notify_ack = 0; 5359 /* The sessions will be cleared in the callback, if needed */ 5360 break; 5361 5362 case IMM_NTFY_GLBL_LOGO: 5363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5364 "qla_target(%d): Link failure detected\n", 5365 vha->vp_idx); 5366 /* I_T nexus loss */ 5367 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5368 send_notify_ack = 0; 5369 break; 5370 5371 case IMM_NTFY_IOCB_OVERFLOW: 5372 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5373 "qla_target(%d): Cannot provide requested " 5374 "capability (IOCB overflowed the immediate notify " 5375 "resource count)\n", vha->vp_idx); 5376 break; 5377 5378 case IMM_NTFY_ABORT_TASK: 5379 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5380 "qla_target(%d): Abort Task (S %08x I %#x -> " 5381 "L %#x)\n", vha->vp_idx, 5382 le16_to_cpu(iocb->u.isp2x.seq_id), 5383 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5384 le16_to_cpu(iocb->u.isp2x.lun)); 5385 if (qlt_abort_task(vha, iocb) == 0) 5386 send_notify_ack = 0; 5387 break; 5388 5389 case IMM_NTFY_RESOURCE: 5390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5391 "qla_target(%d): Out of resources, host %ld\n", 5392 vha->vp_idx, vha->host_no); 5393 break; 5394 5395 case IMM_NTFY_MSG_RX: 5396 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5397 "qla_target(%d): Immediate notify task %x\n", 5398 vha->vp_idx, iocb->u.isp2x.task_flags); 5399 break; 5400 5401 case IMM_NTFY_ELS: 5402 if (qlt_24xx_handle_els(vha, iocb) == 0) 5403 send_notify_ack = 0; 5404 break; 5405 default: 5406 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5407 "qla_target(%d): Received unknown immediate " 5408 "notify status %x\n", vha->vp_idx, status); 5409 break; 5410 } 5411 5412 if (send_notify_ack) 5413 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5414 0, 0); 5415 } 5416 5417 /* 5418 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5419 * This function sends busy to ISP 2xxx or 24xx. 5420 */ 5421 static int __qlt_send_busy(struct qla_qpair *qpair, 5422 struct atio_from_isp *atio, uint16_t status) 5423 { 5424 struct scsi_qla_host *vha = qpair->vha; 5425 struct ctio7_to_24xx *ctio24; 5426 struct qla_hw_data *ha = vha->hw; 5427 request_t *pkt; 5428 struct fc_port *sess = NULL; 5429 unsigned long flags; 5430 u16 temp; 5431 port_id_t id; 5432 5433 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5434 5435 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5436 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5437 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5438 if (!sess) { 5439 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5440 return 0; 5441 } 5442 /* Sending marker isn't necessary, since we called from ISR */ 5443 5444 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5445 if (!pkt) { 5446 ql_dbg(ql_dbg_io, vha, 0x3063, 5447 "qla_target(%d): %s failed: unable to allocate " 5448 "request packet", vha->vp_idx, __func__); 5449 return -ENOMEM; 5450 } 5451 5452 qpair->tgt_counters.num_q_full_sent++; 5453 pkt->entry_count = 1; 5454 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5455 5456 ctio24 = (struct ctio7_to_24xx *)pkt; 5457 ctio24->entry_type = CTIO_TYPE7; 5458 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5459 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5460 ctio24->vp_index = vha->vp_idx; 5461 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5462 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5463 temp = (atio->u.isp24.attr << 9) | 5464 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5465 CTIO7_FLAGS_DONT_RET_CTIO; 5466 ctio24->u.status1.flags = cpu_to_le16(temp); 5467 /* 5468 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5469 * if the explicit conformation is used. 5470 */ 5471 ctio24->u.status1.ox_id = 5472 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5473 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5474 5475 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5476 5477 if (ctio24->u.status1.residual != 0) 5478 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5479 5480 /* Memory Barrier */ 5481 wmb(); 5482 if (qpair->reqq_start_iocbs) 5483 qpair->reqq_start_iocbs(qpair); 5484 else 5485 qla2x00_start_iocbs(vha, qpair->req); 5486 return 0; 5487 } 5488 5489 /* 5490 * This routine is used to allocate a command for either a QFull condition 5491 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5492 * out previously. 5493 */ 5494 static void 5495 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5496 struct atio_from_isp *atio, uint16_t status, int qfull) 5497 { 5498 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5499 struct qla_hw_data *ha = vha->hw; 5500 struct fc_port *sess; 5501 struct qla_tgt_cmd *cmd; 5502 unsigned long flags; 5503 5504 if (unlikely(tgt->tgt_stop)) { 5505 ql_dbg(ql_dbg_io, vha, 0x300a, 5506 "New command while device %p is shutting down\n", tgt); 5507 return; 5508 } 5509 5510 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5511 vha->hw->tgt.num_qfull_cmds_dropped++; 5512 if (vha->hw->tgt.num_qfull_cmds_dropped > 5513 vha->qla_stats.stat_max_qfull_cmds_dropped) 5514 vha->qla_stats.stat_max_qfull_cmds_dropped = 5515 vha->hw->tgt.num_qfull_cmds_dropped; 5516 5517 ql_dbg(ql_dbg_io, vha, 0x3068, 5518 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5519 vha->vp_idx, __func__, 5520 vha->hw->tgt.num_qfull_cmds_dropped); 5521 5522 qlt_chk_exch_leak_thresh_hold(vha); 5523 return; 5524 } 5525 5526 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5527 (vha, atio->u.isp24.fcp_hdr.s_id); 5528 if (!sess) 5529 return; 5530 5531 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5532 if (!cmd) { 5533 ql_dbg(ql_dbg_io, vha, 0x3009, 5534 "qla_target(%d): %s: Allocation of cmd failed\n", 5535 vha->vp_idx, __func__); 5536 5537 vha->hw->tgt.num_qfull_cmds_dropped++; 5538 if (vha->hw->tgt.num_qfull_cmds_dropped > 5539 vha->qla_stats.stat_max_qfull_cmds_dropped) 5540 vha->qla_stats.stat_max_qfull_cmds_dropped = 5541 vha->hw->tgt.num_qfull_cmds_dropped; 5542 5543 qlt_chk_exch_leak_thresh_hold(vha); 5544 return; 5545 } 5546 5547 qlt_incr_num_pend_cmds(vha); 5548 INIT_LIST_HEAD(&cmd->cmd_list); 5549 memcpy(&cmd->atio, atio, sizeof(*atio)); 5550 5551 cmd->tgt = vha->vha_tgt.qla_tgt; 5552 cmd->vha = vha; 5553 cmd->reset_count = ha->base_qpair->chip_reset; 5554 cmd->q_full = 1; 5555 cmd->qpair = ha->base_qpair; 5556 5557 if (qfull) { 5558 cmd->q_full = 1; 5559 /* NOTE: borrowing the state field to carry the status */ 5560 cmd->state = status; 5561 } else 5562 cmd->term_exchg = 1; 5563 5564 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5565 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5566 5567 vha->hw->tgt.num_qfull_cmds_alloc++; 5568 if (vha->hw->tgt.num_qfull_cmds_alloc > 5569 vha->qla_stats.stat_max_qfull_cmds_alloc) 5570 vha->qla_stats.stat_max_qfull_cmds_alloc = 5571 vha->hw->tgt.num_qfull_cmds_alloc; 5572 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5573 } 5574 5575 int 5576 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5577 { 5578 struct scsi_qla_host *vha = qpair->vha; 5579 struct qla_hw_data *ha = vha->hw; 5580 unsigned long flags; 5581 struct qla_tgt_cmd *cmd, *tcmd; 5582 struct list_head free_list, q_full_list; 5583 int rc = 0; 5584 5585 if (list_empty(&ha->tgt.q_full_list)) 5586 return 0; 5587 5588 INIT_LIST_HEAD(&free_list); 5589 INIT_LIST_HEAD(&q_full_list); 5590 5591 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5592 if (list_empty(&ha->tgt.q_full_list)) { 5593 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5594 return 0; 5595 } 5596 5597 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5598 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5599 5600 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5601 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5602 if (cmd->q_full) 5603 /* cmd->state is a borrowed field to hold status */ 5604 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5605 else if (cmd->term_exchg) 5606 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5607 5608 if (rc == -ENOMEM) 5609 break; 5610 5611 if (cmd->q_full) 5612 ql_dbg(ql_dbg_io, vha, 0x3006, 5613 "%s: busy sent for ox_id[%04x]\n", __func__, 5614 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5615 else if (cmd->term_exchg) 5616 ql_dbg(ql_dbg_io, vha, 0x3007, 5617 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5618 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5619 else 5620 ql_dbg(ql_dbg_io, vha, 0x3008, 5621 "%s: Unexpected cmd in QFull list %p\n", __func__, 5622 cmd); 5623 5624 list_move_tail(&cmd->cmd_list, &free_list); 5625 5626 /* piggy back on hardware_lock for protection */ 5627 vha->hw->tgt.num_qfull_cmds_alloc--; 5628 } 5629 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5630 5631 cmd = NULL; 5632 5633 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5634 list_del(&cmd->cmd_list); 5635 /* This cmd was never sent to TCM. There is no need 5636 * to schedule free or call free_cmd 5637 */ 5638 qlt_free_cmd(cmd); 5639 } 5640 5641 if (!list_empty(&q_full_list)) { 5642 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5643 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5644 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5645 } 5646 5647 return rc; 5648 } 5649 5650 static void 5651 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5652 uint16_t status) 5653 { 5654 int rc = 0; 5655 struct scsi_qla_host *vha = qpair->vha; 5656 5657 rc = __qlt_send_busy(qpair, atio, status); 5658 if (rc == -ENOMEM) 5659 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5660 } 5661 5662 static int 5663 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5664 struct atio_from_isp *atio, uint8_t ha_locked) 5665 { 5666 struct qla_hw_data *ha = vha->hw; 5667 unsigned long flags; 5668 5669 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5670 return 0; 5671 5672 if (!ha_locked) 5673 spin_lock_irqsave(&ha->hardware_lock, flags); 5674 qlt_send_busy(qpair, atio, qla_sam_status); 5675 if (!ha_locked) 5676 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5677 5678 return 1; 5679 } 5680 5681 /* ha->hardware_lock supposed to be held on entry */ 5682 /* called via callback from qla2xxx */ 5683 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5684 struct atio_from_isp *atio, uint8_t ha_locked) 5685 { 5686 struct qla_hw_data *ha = vha->hw; 5687 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5688 int rc; 5689 unsigned long flags = 0; 5690 5691 if (unlikely(tgt == NULL)) { 5692 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5693 "ATIO pkt, but no tgt (ha %p)", ha); 5694 return; 5695 } 5696 /* 5697 * In tgt_stop mode we also should allow all requests to pass. 5698 * Otherwise, some commands can stuck. 5699 */ 5700 5701 tgt->atio_irq_cmd_count++; 5702 5703 switch (atio->u.raw.entry_type) { 5704 case ATIO_TYPE7: 5705 if (unlikely(atio->u.isp24.exchange_addr == 5706 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5707 ql_dbg(ql_dbg_io, vha, 0x3065, 5708 "qla_target(%d): ATIO_TYPE7 " 5709 "received with UNKNOWN exchange address, " 5710 "sending QUEUE_FULL\n", vha->vp_idx); 5711 if (!ha_locked) 5712 spin_lock_irqsave(&ha->hardware_lock, flags); 5713 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5714 if (!ha_locked) 5715 spin_unlock_irqrestore(&ha->hardware_lock, 5716 flags); 5717 break; 5718 } 5719 5720 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5721 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5722 atio, ha_locked); 5723 if (rc != 0) { 5724 tgt->atio_irq_cmd_count--; 5725 return; 5726 } 5727 rc = qlt_handle_cmd_for_atio(vha, atio); 5728 } else { 5729 rc = qlt_handle_task_mgmt(vha, atio); 5730 } 5731 if (unlikely(rc != 0)) { 5732 if (!ha_locked) 5733 spin_lock_irqsave(&ha->hardware_lock, flags); 5734 switch (rc) { 5735 case -ENODEV: 5736 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5737 "qla_target: Unable to send command to target\n"); 5738 break; 5739 case -EBADF: 5740 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5741 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5742 qlt_send_term_exchange(ha->base_qpair, NULL, 5743 atio, 1, 0); 5744 break; 5745 case -EBUSY: 5746 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5747 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5748 vha->vp_idx); 5749 qlt_send_busy(ha->base_qpair, atio, 5750 tc_sam_status); 5751 break; 5752 default: 5753 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5754 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5755 vha->vp_idx); 5756 qlt_send_busy(ha->base_qpair, atio, 5757 qla_sam_status); 5758 break; 5759 } 5760 if (!ha_locked) 5761 spin_unlock_irqrestore(&ha->hardware_lock, 5762 flags); 5763 } 5764 break; 5765 5766 case IMMED_NOTIFY_TYPE: 5767 { 5768 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5769 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5770 "qla_target(%d): Received ATIO packet %x " 5771 "with error status %x\n", vha->vp_idx, 5772 atio->u.raw.entry_type, 5773 atio->u.isp2x.entry_status); 5774 break; 5775 } 5776 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5777 5778 if (!ha_locked) 5779 spin_lock_irqsave(&ha->hardware_lock, flags); 5780 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5781 if (!ha_locked) 5782 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5783 break; 5784 } 5785 5786 default: 5787 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5788 "qla_target(%d): Received unknown ATIO atio " 5789 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5790 break; 5791 } 5792 5793 tgt->atio_irq_cmd_count--; 5794 } 5795 5796 /* 5797 * qpair lock is assume to be held 5798 * rc = 0 : send terminate & abts respond 5799 * rc != 0: do not send term & abts respond 5800 */ 5801 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5802 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5803 { 5804 struct qla_hw_data *ha = vha->hw; 5805 int rc = 0; 5806 5807 /* 5808 * Detect unresolved exchange. If the same ABTS is unable 5809 * to terminate an existing command and the same ABTS loops 5810 * between FW & Driver, then force FW dump. Under 1 jiff, 5811 * we should see multiple loops. 5812 */ 5813 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5814 qpair->retry_term_jiff == jiffies) { 5815 /* found existing exchange */ 5816 qpair->retry_term_cnt++; 5817 if (qpair->retry_term_cnt >= 5) { 5818 rc = -EIO; 5819 qpair->retry_term_cnt = 0; 5820 ql_log(ql_log_warn, vha, 0xffff, 5821 "Unable to send ABTS Respond. Dumping firmware.\n"); 5822 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5823 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5824 5825 if (qpair == ha->base_qpair) 5826 ha->isp_ops->fw_dump(vha); 5827 else 5828 qla2xxx_dump_fw(vha); 5829 5830 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5831 qla2xxx_wake_dpc(vha); 5832 } 5833 } else if (qpair->retry_term_jiff != jiffies) { 5834 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5835 qpair->retry_term_cnt = 0; 5836 qpair->retry_term_jiff = jiffies; 5837 } 5838 5839 return rc; 5840 } 5841 5842 5843 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5844 struct rsp_que *rsp, response_t *pkt) 5845 { 5846 struct abts_resp_from_24xx_fw *entry = 5847 (struct abts_resp_from_24xx_fw *)pkt; 5848 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5849 struct qla_tgt_mgmt_cmd *mcmd; 5850 struct qla_hw_data *ha = vha->hw; 5851 5852 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5853 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5854 ql_dbg(ql_dbg_async, vha, 0xe064, 5855 "qla_target(%d): ABTS Comp without mcmd\n", 5856 vha->vp_idx); 5857 return; 5858 } 5859 5860 if (mcmd) 5861 vha = mcmd->vha; 5862 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5863 5864 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5865 "ABTS_RESP_24XX: compl_status %x\n", 5866 entry->compl_status); 5867 5868 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5869 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5870 le32_to_cpu(entry->error_subcode2) == 0) { 5871 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5872 ha->tgt.tgt_ops->free_mcmd(mcmd); 5873 return; 5874 } 5875 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5876 pkt, mcmd); 5877 } else { 5878 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5879 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5880 vha->vp_idx, entry->compl_status, 5881 entry->error_subcode1, 5882 entry->error_subcode2); 5883 ha->tgt.tgt_ops->free_mcmd(mcmd); 5884 } 5885 } else if (mcmd) { 5886 ha->tgt.tgt_ops->free_mcmd(mcmd); 5887 } 5888 } 5889 5890 /* ha->hardware_lock supposed to be held on entry */ 5891 /* called via callback from qla2xxx */ 5892 static void qlt_response_pkt(struct scsi_qla_host *vha, 5893 struct rsp_que *rsp, response_t *pkt) 5894 { 5895 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5896 5897 if (unlikely(tgt == NULL)) { 5898 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5899 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5900 vha->vp_idx, pkt->entry_type, vha->hw); 5901 return; 5902 } 5903 5904 /* 5905 * In tgt_stop mode we also should allow all requests to pass. 5906 * Otherwise, some commands can stuck. 5907 */ 5908 5909 switch (pkt->entry_type) { 5910 case CTIO_CRC2: 5911 case CTIO_TYPE7: 5912 { 5913 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5914 5915 qlt_do_ctio_completion(vha, rsp, entry->handle, 5916 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5917 entry); 5918 break; 5919 } 5920 5921 case ACCEPT_TGT_IO_TYPE: 5922 { 5923 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5924 int rc; 5925 5926 if (atio->u.isp2x.status != 5927 cpu_to_le16(ATIO_CDB_VALID)) { 5928 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5929 "qla_target(%d): ATIO with error " 5930 "status %x received\n", vha->vp_idx, 5931 le16_to_cpu(atio->u.isp2x.status)); 5932 break; 5933 } 5934 5935 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5936 if (rc != 0) 5937 return; 5938 5939 rc = qlt_handle_cmd_for_atio(vha, atio); 5940 if (unlikely(rc != 0)) { 5941 switch (rc) { 5942 case -ENODEV: 5943 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5944 "qla_target: Unable to send command to target\n"); 5945 break; 5946 case -EBADF: 5947 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5948 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5949 qlt_send_term_exchange(rsp->qpair, NULL, 5950 atio, 1, 0); 5951 break; 5952 case -EBUSY: 5953 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5954 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5955 vha->vp_idx); 5956 qlt_send_busy(rsp->qpair, atio, 5957 tc_sam_status); 5958 break; 5959 default: 5960 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5961 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5962 vha->vp_idx); 5963 qlt_send_busy(rsp->qpair, atio, 5964 qla_sam_status); 5965 break; 5966 } 5967 } 5968 } 5969 break; 5970 5971 case CONTINUE_TGT_IO_TYPE: 5972 { 5973 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5974 5975 qlt_do_ctio_completion(vha, rsp, entry->handle, 5976 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5977 entry); 5978 break; 5979 } 5980 5981 case CTIO_A64_TYPE: 5982 { 5983 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5984 5985 qlt_do_ctio_completion(vha, rsp, entry->handle, 5986 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5987 entry); 5988 break; 5989 } 5990 5991 case IMMED_NOTIFY_TYPE: 5992 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5993 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5994 break; 5995 5996 case NOTIFY_ACK_TYPE: 5997 if (tgt->notify_ack_expected > 0) { 5998 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5999 6000 ql_dbg(ql_dbg_tgt, vha, 0xe036, 6001 "NOTIFY_ACK seq %08x status %x\n", 6002 le16_to_cpu(entry->u.isp2x.seq_id), 6003 le16_to_cpu(entry->u.isp2x.status)); 6004 tgt->notify_ack_expected--; 6005 if (entry->u.isp2x.status != 6006 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 6007 ql_dbg(ql_dbg_tgt, vha, 0xe061, 6008 "qla_target(%d): NOTIFY_ACK " 6009 "failed %x\n", vha->vp_idx, 6010 le16_to_cpu(entry->u.isp2x.status)); 6011 } 6012 } else { 6013 ql_dbg(ql_dbg_tgt, vha, 0xe062, 6014 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 6015 vha->vp_idx); 6016 } 6017 break; 6018 6019 case ABTS_RECV_24XX: 6020 ql_dbg(ql_dbg_tgt, vha, 0xe037, 6021 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 6022 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 6023 break; 6024 6025 case ABTS_RESP_24XX: 6026 if (tgt->abts_resp_expected > 0) { 6027 qlt_handle_abts_completion(vha, rsp, pkt); 6028 } else { 6029 ql_dbg(ql_dbg_tgt, vha, 0xe064, 6030 "qla_target(%d): Unexpected ABTS_RESP_24XX " 6031 "received\n", vha->vp_idx); 6032 } 6033 break; 6034 6035 default: 6036 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6037 "qla_target(%d): Received unknown response pkt " 6038 "type %x\n", vha->vp_idx, pkt->entry_type); 6039 break; 6040 } 6041 6042 } 6043 6044 /* 6045 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6046 */ 6047 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6048 uint16_t *mailbox) 6049 { 6050 struct qla_hw_data *ha = vha->hw; 6051 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6052 int login_code; 6053 6054 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6055 return; 6056 6057 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6058 IS_QLA2100(ha)) 6059 return; 6060 /* 6061 * In tgt_stop mode we also should allow all requests to pass. 6062 * Otherwise, some commands can stuck. 6063 */ 6064 6065 6066 switch (code) { 6067 case MBA_RESET: /* Reset */ 6068 case MBA_SYSTEM_ERR: /* System Error */ 6069 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6070 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6072 "qla_target(%d): System error async event %#x " 6073 "occurred", vha->vp_idx, code); 6074 break; 6075 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6076 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6077 break; 6078 6079 case MBA_LOOP_UP: 6080 { 6081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6082 "qla_target(%d): Async LOOP_UP occurred " 6083 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6084 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6085 if (tgt->link_reinit_iocb_pending) { 6086 qlt_send_notify_ack(ha->base_qpair, 6087 &tgt->link_reinit_iocb, 6088 0, 0, 0, 0, 0, 0); 6089 tgt->link_reinit_iocb_pending = 0; 6090 } 6091 break; 6092 } 6093 6094 case MBA_LIP_OCCURRED: 6095 case MBA_LOOP_DOWN: 6096 case MBA_LIP_RESET: 6097 case MBA_RSCN_UPDATE: 6098 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6099 "qla_target(%d): Async event %#x occurred " 6100 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6101 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6102 break; 6103 6104 case MBA_REJECTED_FCP_CMD: 6105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6106 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6107 vha->vp_idx, 6108 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6109 6110 if (mailbox[3] == 1) { 6111 /* exchange starvation. */ 6112 vha->hw->exch_starvation++; 6113 if (vha->hw->exch_starvation > 5) { 6114 ql_log(ql_log_warn, vha, 0xd03a, 6115 "Exchange starvation-. Resetting RISC\n"); 6116 6117 vha->hw->exch_starvation = 0; 6118 if (IS_P3P_TYPE(vha->hw)) 6119 set_bit(FCOE_CTX_RESET_NEEDED, 6120 &vha->dpc_flags); 6121 else 6122 set_bit(ISP_ABORT_NEEDED, 6123 &vha->dpc_flags); 6124 qla2xxx_wake_dpc(vha); 6125 } 6126 } 6127 break; 6128 6129 case MBA_PORT_UPDATE: 6130 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6131 "qla_target(%d): Port update async event %#x " 6132 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6133 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6134 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6135 6136 login_code = mailbox[2]; 6137 if (login_code == 0x4) { 6138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6139 "Async MB 2: Got PLOGI Complete\n"); 6140 vha->hw->exch_starvation = 0; 6141 } else if (login_code == 0x7) 6142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6143 "Async MB 2: Port Logged Out\n"); 6144 break; 6145 default: 6146 break; 6147 } 6148 6149 } 6150 6151 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6152 uint16_t loop_id) 6153 { 6154 fc_port_t *fcport, *tfcp, *del; 6155 int rc; 6156 unsigned long flags; 6157 u8 newfcport = 0; 6158 6159 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6160 if (!fcport) { 6161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6162 "qla_target(%d): Allocation of tmp FC port failed", 6163 vha->vp_idx); 6164 return NULL; 6165 } 6166 6167 fcport->loop_id = loop_id; 6168 6169 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6170 if (rc != QLA_SUCCESS) { 6171 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6172 "qla_target(%d): Failed to retrieve fcport " 6173 "information -- get_port_database() returned %x " 6174 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6175 kfree(fcport); 6176 return NULL; 6177 } 6178 6179 del = NULL; 6180 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6181 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6182 6183 if (tfcp) { 6184 tfcp->d_id = fcport->d_id; 6185 tfcp->port_type = fcport->port_type; 6186 tfcp->supported_classes = fcport->supported_classes; 6187 tfcp->flags |= fcport->flags; 6188 tfcp->scan_state = QLA_FCPORT_FOUND; 6189 6190 del = fcport; 6191 fcport = tfcp; 6192 } else { 6193 if (vha->hw->current_topology == ISP_CFG_F) 6194 fcport->flags |= FCF_FABRIC_DEVICE; 6195 6196 list_add_tail(&fcport->list, &vha->vp_fcports); 6197 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6198 vha->fcport_count++; 6199 fcport->login_gen++; 6200 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6201 fcport->login_succ = 1; 6202 newfcport = 1; 6203 } 6204 6205 fcport->deleted = 0; 6206 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6207 6208 switch (vha->host->active_mode) { 6209 case MODE_INITIATOR: 6210 case MODE_DUAL: 6211 if (newfcport) { 6212 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6213 qla24xx_sched_upd_fcport(fcport); 6214 } else { 6215 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6216 "%s %d %8phC post gpsc fcp_cnt %d\n", 6217 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6218 qla24xx_post_gpsc_work(vha, fcport); 6219 } 6220 } 6221 break; 6222 6223 case MODE_TARGET: 6224 default: 6225 break; 6226 } 6227 if (del) 6228 qla2x00_free_fcport(del); 6229 6230 return fcport; 6231 } 6232 6233 /* Must be called under tgt_mutex */ 6234 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6235 be_id_t s_id) 6236 { 6237 struct fc_port *sess = NULL; 6238 fc_port_t *fcport = NULL; 6239 int rc, global_resets; 6240 uint16_t loop_id = 0; 6241 6242 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6243 /* 6244 * This is Domain Controller, so it should be 6245 * OK to drop SCSI commands from it. 6246 */ 6247 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6248 "Unable to find initiator with S_ID %x:%x:%x", 6249 s_id.domain, s_id.area, s_id.al_pa); 6250 return NULL; 6251 } 6252 6253 mutex_lock(&vha->vha_tgt.tgt_mutex); 6254 6255 retry: 6256 global_resets = 6257 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6258 6259 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6260 if (rc != 0) { 6261 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6262 6263 ql_log(ql_log_info, vha, 0xf071, 6264 "qla_target(%d): Unable to find " 6265 "initiator with S_ID %x:%x:%x", 6266 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6267 6268 if (rc == -ENOENT) { 6269 qlt_port_logo_t logo; 6270 6271 logo.id = be_to_port_id(s_id); 6272 logo.cmd_count = 1; 6273 qlt_send_first_logo(vha, &logo); 6274 } 6275 6276 return NULL; 6277 } 6278 6279 fcport = qlt_get_port_database(vha, loop_id); 6280 if (!fcport) { 6281 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6282 return NULL; 6283 } 6284 6285 if (global_resets != 6286 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6287 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6288 "qla_target(%d): global reset during session discovery " 6289 "(counter was %d, new %d), retrying", vha->vp_idx, 6290 global_resets, 6291 atomic_read(&vha->vha_tgt. 6292 qla_tgt->tgt_global_resets_count)); 6293 goto retry; 6294 } 6295 6296 sess = qlt_create_sess(vha, fcport, true); 6297 6298 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6299 6300 return sess; 6301 } 6302 6303 static void qlt_abort_work(struct qla_tgt *tgt, 6304 struct qla_tgt_sess_work_param *prm) 6305 { 6306 struct scsi_qla_host *vha = tgt->vha; 6307 struct qla_hw_data *ha = vha->hw; 6308 struct fc_port *sess = NULL; 6309 unsigned long flags = 0, flags2 = 0; 6310 be_id_t s_id; 6311 int rc; 6312 6313 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6314 6315 if (tgt->tgt_stop) 6316 goto out_term2; 6317 6318 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6319 6320 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6321 if (!sess) { 6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6323 6324 sess = qlt_make_local_sess(vha, s_id); 6325 /* sess has got an extra creation ref */ 6326 6327 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6328 if (!sess) 6329 goto out_term2; 6330 } else { 6331 if (sess->deleted) { 6332 sess = NULL; 6333 goto out_term2; 6334 } 6335 6336 if (!kref_get_unless_zero(&sess->sess_kref)) { 6337 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6338 "%s: kref_get fail %8phC \n", 6339 __func__, sess->port_name); 6340 sess = NULL; 6341 goto out_term2; 6342 } 6343 } 6344 6345 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6346 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6347 6348 ha->tgt.tgt_ops->put_sess(sess); 6349 6350 if (rc != 0) 6351 goto out_term; 6352 return; 6353 6354 out_term2: 6355 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6356 6357 out_term: 6358 spin_lock_irqsave(&ha->hardware_lock, flags); 6359 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6360 FCP_TMF_REJECTED, false); 6361 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6362 } 6363 6364 static void qlt_tmr_work(struct qla_tgt *tgt, 6365 struct qla_tgt_sess_work_param *prm) 6366 { 6367 struct atio_from_isp *a = &prm->tm_iocb2; 6368 struct scsi_qla_host *vha = tgt->vha; 6369 struct qla_hw_data *ha = vha->hw; 6370 struct fc_port *sess; 6371 unsigned long flags; 6372 be_id_t s_id; 6373 int rc; 6374 u64 unpacked_lun; 6375 int fn; 6376 void *iocb; 6377 6378 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6379 6380 if (tgt->tgt_stop) 6381 goto out_term2; 6382 6383 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6384 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6385 if (!sess) { 6386 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6387 6388 sess = qlt_make_local_sess(vha, s_id); 6389 /* sess has got an extra creation ref */ 6390 6391 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6392 if (!sess) 6393 goto out_term2; 6394 } else { 6395 if (sess->deleted) { 6396 goto out_term2; 6397 } 6398 6399 if (!kref_get_unless_zero(&sess->sess_kref)) { 6400 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6401 "%s: kref_get fail %8phC\n", 6402 __func__, sess->port_name); 6403 goto out_term2; 6404 } 6405 } 6406 6407 iocb = a; 6408 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6409 unpacked_lun = 6410 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6411 6412 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6413 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6414 6415 ha->tgt.tgt_ops->put_sess(sess); 6416 6417 if (rc != 0) 6418 goto out_term; 6419 return; 6420 6421 out_term2: 6422 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6423 out_term: 6424 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6425 } 6426 6427 static void qlt_sess_work_fn(struct work_struct *work) 6428 { 6429 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6430 struct scsi_qla_host *vha = tgt->vha; 6431 unsigned long flags; 6432 6433 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6434 6435 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6436 while (!list_empty(&tgt->sess_works_list)) { 6437 struct qla_tgt_sess_work_param *prm = list_entry( 6438 tgt->sess_works_list.next, typeof(*prm), 6439 sess_works_list_entry); 6440 6441 /* 6442 * This work can be scheduled on several CPUs at time, so we 6443 * must delete the entry to eliminate double processing 6444 */ 6445 list_del(&prm->sess_works_list_entry); 6446 6447 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6448 6449 switch (prm->type) { 6450 case QLA_TGT_SESS_WORK_ABORT: 6451 qlt_abort_work(tgt, prm); 6452 break; 6453 case QLA_TGT_SESS_WORK_TM: 6454 qlt_tmr_work(tgt, prm); 6455 break; 6456 default: 6457 BUG_ON(1); 6458 break; 6459 } 6460 6461 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6462 6463 kfree(prm); 6464 } 6465 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6466 } 6467 6468 /* Must be called under tgt_host_action_mutex */ 6469 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6470 { 6471 struct qla_tgt *tgt; 6472 int rc, i; 6473 struct qla_qpair_hint *h; 6474 6475 if (!QLA_TGT_MODE_ENABLED()) 6476 return 0; 6477 6478 if (!IS_TGT_MODE_CAPABLE(ha)) { 6479 ql_log(ql_log_warn, base_vha, 0xe070, 6480 "This adapter does not support target mode.\n"); 6481 return 0; 6482 } 6483 6484 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6485 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6486 6487 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6488 6489 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6490 if (!tgt) { 6491 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6492 "Unable to allocate struct qla_tgt\n"); 6493 return -ENOMEM; 6494 } 6495 6496 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6497 sizeof(struct qla_qpair_hint), 6498 GFP_KERNEL); 6499 if (!tgt->qphints) { 6500 kfree(tgt); 6501 ql_log(ql_log_warn, base_vha, 0x0197, 6502 "Unable to allocate qpair hints.\n"); 6503 return -ENOMEM; 6504 } 6505 6506 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6507 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6508 6509 rc = btree_init64(&tgt->lun_qpair_map); 6510 if (rc) { 6511 kfree(tgt->qphints); 6512 kfree(tgt); 6513 ql_log(ql_log_info, base_vha, 0x0198, 6514 "Unable to initialize lun_qpair_map btree\n"); 6515 return -EIO; 6516 } 6517 h = &tgt->qphints[0]; 6518 h->qpair = ha->base_qpair; 6519 INIT_LIST_HEAD(&h->hint_elem); 6520 h->cpuid = ha->base_qpair->cpuid; 6521 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6522 6523 for (i = 0; i < ha->max_qpairs; i++) { 6524 unsigned long flags; 6525 6526 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6527 6528 h = &tgt->qphints[i + 1]; 6529 INIT_LIST_HEAD(&h->hint_elem); 6530 if (qpair) { 6531 h->qpair = qpair; 6532 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6533 list_add_tail(&h->hint_elem, &qpair->hints_list); 6534 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6535 h->cpuid = qpair->cpuid; 6536 } 6537 } 6538 6539 tgt->ha = ha; 6540 tgt->vha = base_vha; 6541 init_waitqueue_head(&tgt->waitQ); 6542 INIT_LIST_HEAD(&tgt->del_sess_list); 6543 spin_lock_init(&tgt->sess_work_lock); 6544 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6545 INIT_LIST_HEAD(&tgt->sess_works_list); 6546 atomic_set(&tgt->tgt_global_resets_count, 0); 6547 6548 base_vha->vha_tgt.qla_tgt = tgt; 6549 6550 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6551 "qla_target(%d): using 64 Bit PCI addressing", 6552 base_vha->vp_idx); 6553 /* 3 is reserved */ 6554 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6555 6556 mutex_lock(&qla_tgt_mutex); 6557 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6558 mutex_unlock(&qla_tgt_mutex); 6559 6560 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6561 ha->tgt.tgt_ops->add_target(base_vha); 6562 6563 return 0; 6564 } 6565 6566 /* Must be called under tgt_host_action_mutex */ 6567 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6568 { 6569 if (!vha->vha_tgt.qla_tgt) 6570 return 0; 6571 6572 if (vha->fc_vport) { 6573 qlt_release(vha->vha_tgt.qla_tgt); 6574 return 0; 6575 } 6576 6577 /* free left over qfull cmds */ 6578 qlt_init_term_exchange(vha); 6579 6580 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6581 vha->host_no, ha); 6582 qlt_release(vha->vha_tgt.qla_tgt); 6583 6584 return 0; 6585 } 6586 6587 void qla_remove_hostmap(struct qla_hw_data *ha) 6588 { 6589 struct scsi_qla_host *node; 6590 u32 key = 0; 6591 6592 btree_for_each_safe32(&ha->host_map, key, node) 6593 btree_remove32(&ha->host_map, key); 6594 6595 btree_destroy32(&ha->host_map); 6596 } 6597 6598 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6599 unsigned char *b) 6600 { 6601 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6602 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6603 put_unaligned_be64(wwpn, b); 6604 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6605 } 6606 6607 /** 6608 * qlt_lport_register - register lport with external module 6609 * 6610 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6611 * @phys_wwpn: physical port WWPN 6612 * @npiv_wwpn: NPIV WWPN 6613 * @npiv_wwnn: NPIV WWNN 6614 * @callback: lport initialization callback for tcm_qla2xxx code 6615 */ 6616 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6617 u64 npiv_wwpn, u64 npiv_wwnn, 6618 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6619 { 6620 struct qla_tgt *tgt; 6621 struct scsi_qla_host *vha; 6622 struct qla_hw_data *ha; 6623 struct Scsi_Host *host; 6624 unsigned long flags; 6625 int rc; 6626 u8 b[WWN_SIZE]; 6627 6628 mutex_lock(&qla_tgt_mutex); 6629 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6630 vha = tgt->vha; 6631 ha = vha->hw; 6632 6633 host = vha->host; 6634 if (!host) 6635 continue; 6636 6637 if (!(host->hostt->supported_mode & MODE_TARGET)) 6638 continue; 6639 6640 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6641 continue; 6642 6643 spin_lock_irqsave(&ha->hardware_lock, flags); 6644 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6645 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6646 host->host_no); 6647 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6648 continue; 6649 } 6650 if (tgt->tgt_stop) { 6651 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6652 host->host_no); 6653 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6654 continue; 6655 } 6656 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6657 6658 if (!scsi_host_get(host)) { 6659 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6660 "Unable to scsi_host_get() for" 6661 " qla2xxx scsi_host\n"); 6662 continue; 6663 } 6664 qlt_lport_dump(vha, phys_wwpn, b); 6665 6666 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6667 scsi_host_put(host); 6668 continue; 6669 } 6670 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6671 if (rc != 0) 6672 scsi_host_put(host); 6673 6674 mutex_unlock(&qla_tgt_mutex); 6675 return rc; 6676 } 6677 mutex_unlock(&qla_tgt_mutex); 6678 6679 return -ENODEV; 6680 } 6681 EXPORT_SYMBOL(qlt_lport_register); 6682 6683 /** 6684 * qlt_lport_deregister - Degister lport 6685 * 6686 * @vha: Registered scsi_qla_host pointer 6687 */ 6688 void qlt_lport_deregister(struct scsi_qla_host *vha) 6689 { 6690 struct qla_hw_data *ha = vha->hw; 6691 struct Scsi_Host *sh = vha->host; 6692 /* 6693 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6694 */ 6695 vha->vha_tgt.target_lport_ptr = NULL; 6696 ha->tgt.tgt_ops = NULL; 6697 /* 6698 * Release the Scsi_Host reference for the underlying qla2xxx host 6699 */ 6700 scsi_host_put(sh); 6701 } 6702 EXPORT_SYMBOL(qlt_lport_deregister); 6703 6704 /* Must be called under HW lock */ 6705 void qlt_set_mode(struct scsi_qla_host *vha) 6706 { 6707 switch (vha->qlini_mode) { 6708 case QLA2XXX_INI_MODE_DISABLED: 6709 case QLA2XXX_INI_MODE_EXCLUSIVE: 6710 vha->host->active_mode = MODE_TARGET; 6711 break; 6712 case QLA2XXX_INI_MODE_ENABLED: 6713 vha->host->active_mode = MODE_INITIATOR; 6714 break; 6715 case QLA2XXX_INI_MODE_DUAL: 6716 vha->host->active_mode = MODE_DUAL; 6717 break; 6718 default: 6719 break; 6720 } 6721 } 6722 6723 /* Must be called under HW lock */ 6724 static void qlt_clear_mode(struct scsi_qla_host *vha) 6725 { 6726 switch (vha->qlini_mode) { 6727 case QLA2XXX_INI_MODE_DISABLED: 6728 vha->host->active_mode = MODE_UNKNOWN; 6729 break; 6730 case QLA2XXX_INI_MODE_EXCLUSIVE: 6731 vha->host->active_mode = MODE_INITIATOR; 6732 break; 6733 case QLA2XXX_INI_MODE_ENABLED: 6734 case QLA2XXX_INI_MODE_DUAL: 6735 vha->host->active_mode = MODE_INITIATOR; 6736 break; 6737 default: 6738 break; 6739 } 6740 } 6741 6742 /* 6743 * qla_tgt_enable_vha - NO LOCK HELD 6744 * 6745 * host_reset, bring up w/ Target Mode Enabled 6746 */ 6747 void 6748 qlt_enable_vha(struct scsi_qla_host *vha) 6749 { 6750 struct qla_hw_data *ha = vha->hw; 6751 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6752 unsigned long flags; 6753 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6754 6755 if (!tgt) { 6756 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6757 "Unable to locate qla_tgt pointer from" 6758 " struct qla_hw_data\n"); 6759 dump_stack(); 6760 return; 6761 } 6762 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6763 return; 6764 6765 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6766 ha->tgt.num_act_qpairs = ha->max_qpairs; 6767 spin_lock_irqsave(&ha->hardware_lock, flags); 6768 tgt->tgt_stopped = 0; 6769 qlt_set_mode(vha); 6770 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6771 6772 mutex_lock(&ha->optrom_mutex); 6773 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6774 "%s.\n", __func__); 6775 if (vha->vp_idx) { 6776 qla24xx_disable_vp(vha); 6777 qla24xx_enable_vp(vha); 6778 } else { 6779 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6780 qla2xxx_wake_dpc(base_vha); 6781 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6782 QLA_SUCCESS); 6783 } 6784 mutex_unlock(&ha->optrom_mutex); 6785 } 6786 EXPORT_SYMBOL(qlt_enable_vha); 6787 6788 /* 6789 * qla_tgt_disable_vha - NO LOCK HELD 6790 * 6791 * Disable Target Mode and reset the adapter 6792 */ 6793 static void qlt_disable_vha(struct scsi_qla_host *vha) 6794 { 6795 struct qla_hw_data *ha = vha->hw; 6796 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6797 unsigned long flags; 6798 6799 if (!tgt) { 6800 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6801 "Unable to locate qla_tgt pointer from" 6802 " struct qla_hw_data\n"); 6803 dump_stack(); 6804 return; 6805 } 6806 6807 spin_lock_irqsave(&ha->hardware_lock, flags); 6808 qlt_clear_mode(vha); 6809 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6810 6811 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6812 qla2xxx_wake_dpc(vha); 6813 6814 /* 6815 * We are expecting the offline state. 6816 * QLA_FUNCTION_FAILED means that adapter is offline. 6817 */ 6818 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6819 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6820 "adapter is offline\n"); 6821 } 6822 6823 /* 6824 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6825 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6826 * members. 6827 */ 6828 void 6829 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6830 { 6831 vha->vha_tgt.qla_tgt = NULL; 6832 6833 mutex_init(&vha->vha_tgt.tgt_mutex); 6834 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6835 6836 qlt_clear_mode(vha); 6837 6838 /* 6839 * NOTE: Currently the value is kept the same for <24xx and 6840 * >=24xx ISPs. If it is necessary to change it, 6841 * the check should be added for specific ISPs, 6842 * assigning the value appropriately. 6843 */ 6844 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6845 6846 qlt_add_target(ha, vha); 6847 } 6848 6849 u8 6850 qlt_rff_id(struct scsi_qla_host *vha) 6851 { 6852 u8 fc4_feature = 0; 6853 /* 6854 * FC-4 Feature bit 0 indicates target functionality to the name server. 6855 */ 6856 if (qla_tgt_mode_enabled(vha)) { 6857 fc4_feature = BIT_0; 6858 } else if (qla_ini_mode_enabled(vha)) { 6859 fc4_feature = BIT_1; 6860 } else if (qla_dual_mode_enabled(vha)) 6861 fc4_feature = BIT_0 | BIT_1; 6862 6863 return fc4_feature; 6864 } 6865 6866 /* 6867 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6868 * @ha: HA context 6869 * 6870 * Beginning of ATIO ring has initialization control block already built 6871 * by nvram config routine. 6872 * 6873 * Returns 0 on success. 6874 */ 6875 void 6876 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6877 { 6878 struct qla_hw_data *ha = vha->hw; 6879 uint16_t cnt; 6880 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6881 6882 if (qla_ini_mode_enabled(vha)) 6883 return; 6884 6885 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6886 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6887 pkt++; 6888 } 6889 6890 } 6891 6892 /* 6893 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6894 * @ha: SCSI driver HA context 6895 */ 6896 void 6897 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6898 { 6899 struct qla_hw_data *ha = vha->hw; 6900 struct atio_from_isp *pkt; 6901 int cnt, i; 6902 6903 if (!ha->flags.fw_started) 6904 return; 6905 6906 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6907 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6908 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6909 cnt = pkt->u.raw.entry_count; 6910 6911 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6912 /* 6913 * This packet is corrupted. The header + payload 6914 * can not be trusted. There is no point in passing 6915 * it further up. 6916 */ 6917 ql_log(ql_log_warn, vha, 0xd03c, 6918 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6919 &pkt->u.isp24.fcp_hdr.s_id, 6920 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6921 pkt->u.isp24.exchange_addr, pkt); 6922 6923 adjust_corrupted_atio(pkt); 6924 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6925 ha_locked, 0); 6926 } else { 6927 qlt_24xx_atio_pkt_all_vps(vha, 6928 (struct atio_from_isp *)pkt, ha_locked); 6929 } 6930 6931 for (i = 0; i < cnt; i++) { 6932 ha->tgt.atio_ring_index++; 6933 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6934 ha->tgt.atio_ring_index = 0; 6935 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6936 } else 6937 ha->tgt.atio_ring_ptr++; 6938 6939 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6940 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6941 } 6942 wmb(); 6943 } 6944 6945 /* Adjust ring index */ 6946 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6947 } 6948 6949 void 6950 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6951 { 6952 struct qla_hw_data *ha = vha->hw; 6953 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6954 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6955 6956 if (!QLA_TGT_MODE_ENABLED()) 6957 return; 6958 6959 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6960 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6961 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6962 6963 if (ha->flags.msix_enabled) { 6964 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6965 if (IS_QLA2071(ha)) { 6966 /* 4 ports Baker: Enable Interrupt Handshake */ 6967 icb->msix_atio = 0; 6968 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6969 } else { 6970 icb->msix_atio = cpu_to_le16(msix->entry); 6971 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6972 } 6973 ql_dbg(ql_dbg_init, vha, 0xf072, 6974 "Registering ICB vector 0x%x for atio que.\n", 6975 msix->entry); 6976 } 6977 } else { 6978 /* INTx|MSI */ 6979 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6980 icb->msix_atio = 0; 6981 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6982 ql_dbg(ql_dbg_init, vha, 0xf072, 6983 "%s: Use INTx for ATIOQ.\n", __func__); 6984 } 6985 } 6986 } 6987 6988 void 6989 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6990 { 6991 struct qla_hw_data *ha = vha->hw; 6992 u32 tmp; 6993 6994 if (!QLA_TGT_MODE_ENABLED()) 6995 return; 6996 6997 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6998 if (!ha->tgt.saved_set) { 6999 /* We save only once */ 7000 ha->tgt.saved_exchange_count = nv->exchange_count; 7001 ha->tgt.saved_firmware_options_1 = 7002 nv->firmware_options_1; 7003 ha->tgt.saved_firmware_options_2 = 7004 nv->firmware_options_2; 7005 ha->tgt.saved_firmware_options_3 = 7006 nv->firmware_options_3; 7007 ha->tgt.saved_set = 1; 7008 } 7009 7010 if (qla_tgt_mode_enabled(vha)) 7011 nv->exchange_count = cpu_to_le16(0xFFFF); 7012 else /* dual */ 7013 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7014 7015 /* Enable target mode */ 7016 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7017 7018 /* Disable ini mode, if requested */ 7019 if (qla_tgt_mode_enabled(vha)) 7020 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7021 7022 /* Disable Full Login after LIP */ 7023 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7024 /* Enable initial LIP */ 7025 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7026 if (ql2xtgt_tape_enable) 7027 /* Enable FC Tape support */ 7028 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7029 else 7030 /* Disable FC Tape support */ 7031 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7032 7033 /* Disable Full Login after LIP */ 7034 nv->host_p &= cpu_to_le32(~BIT_10); 7035 7036 /* 7037 * clear BIT 15 explicitly as we have seen at least 7038 * a couple of instances where this was set and this 7039 * was causing the firmware to not be initialized. 7040 */ 7041 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7042 /* Enable target PRLI control */ 7043 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7044 7045 if (IS_QLA25XX(ha)) { 7046 /* Change Loop-prefer to Pt-Pt */ 7047 tmp = ~(BIT_4|BIT_5|BIT_6); 7048 nv->firmware_options_2 &= cpu_to_le32(tmp); 7049 tmp = P2P << 4; 7050 nv->firmware_options_2 |= cpu_to_le32(tmp); 7051 } 7052 } else { 7053 if (ha->tgt.saved_set) { 7054 nv->exchange_count = ha->tgt.saved_exchange_count; 7055 nv->firmware_options_1 = 7056 ha->tgt.saved_firmware_options_1; 7057 nv->firmware_options_2 = 7058 ha->tgt.saved_firmware_options_2; 7059 nv->firmware_options_3 = 7060 ha->tgt.saved_firmware_options_3; 7061 } 7062 return; 7063 } 7064 7065 if (ha->base_qpair->enable_class_2) { 7066 if (vha->flags.init_done) 7067 fc_host_supported_classes(vha->host) = 7068 FC_COS_CLASS2 | FC_COS_CLASS3; 7069 7070 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7071 } else { 7072 if (vha->flags.init_done) 7073 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7074 7075 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7076 } 7077 } 7078 7079 void 7080 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7081 struct init_cb_24xx *icb) 7082 { 7083 struct qla_hw_data *ha = vha->hw; 7084 7085 if (!QLA_TGT_MODE_ENABLED()) 7086 return; 7087 7088 if (ha->tgt.node_name_set) { 7089 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7090 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7091 } 7092 } 7093 7094 void 7095 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7096 { 7097 struct qla_hw_data *ha = vha->hw; 7098 u32 tmp; 7099 7100 if (!QLA_TGT_MODE_ENABLED()) 7101 return; 7102 7103 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7104 if (!ha->tgt.saved_set) { 7105 /* We save only once */ 7106 ha->tgt.saved_exchange_count = nv->exchange_count; 7107 ha->tgt.saved_firmware_options_1 = 7108 nv->firmware_options_1; 7109 ha->tgt.saved_firmware_options_2 = 7110 nv->firmware_options_2; 7111 ha->tgt.saved_firmware_options_3 = 7112 nv->firmware_options_3; 7113 ha->tgt.saved_set = 1; 7114 } 7115 7116 if (qla_tgt_mode_enabled(vha)) 7117 nv->exchange_count = cpu_to_le16(0xFFFF); 7118 else /* dual */ 7119 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7120 7121 /* Enable target mode */ 7122 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7123 7124 /* Disable ini mode, if requested */ 7125 if (qla_tgt_mode_enabled(vha)) 7126 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7127 /* Disable Full Login after LIP */ 7128 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7129 /* Enable initial LIP */ 7130 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7131 /* 7132 * clear BIT 15 explicitly as we have seen at 7133 * least a couple of instances where this was set 7134 * and this was causing the firmware to not be 7135 * initialized. 7136 */ 7137 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7138 if (ql2xtgt_tape_enable) 7139 /* Enable FC tape support */ 7140 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7141 else 7142 /* Disable FC tape support */ 7143 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7144 7145 /* Disable Full Login after LIP */ 7146 nv->host_p &= cpu_to_le32(~BIT_10); 7147 /* Enable target PRLI control */ 7148 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7149 7150 /* Change Loop-prefer to Pt-Pt */ 7151 tmp = ~(BIT_4|BIT_5|BIT_6); 7152 nv->firmware_options_2 &= cpu_to_le32(tmp); 7153 tmp = P2P << 4; 7154 nv->firmware_options_2 |= cpu_to_le32(tmp); 7155 } else { 7156 if (ha->tgt.saved_set) { 7157 nv->exchange_count = ha->tgt.saved_exchange_count; 7158 nv->firmware_options_1 = 7159 ha->tgt.saved_firmware_options_1; 7160 nv->firmware_options_2 = 7161 ha->tgt.saved_firmware_options_2; 7162 nv->firmware_options_3 = 7163 ha->tgt.saved_firmware_options_3; 7164 } 7165 return; 7166 } 7167 7168 if (ha->base_qpair->enable_class_2) { 7169 if (vha->flags.init_done) 7170 fc_host_supported_classes(vha->host) = 7171 FC_COS_CLASS2 | FC_COS_CLASS3; 7172 7173 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7174 } else { 7175 if (vha->flags.init_done) 7176 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7177 7178 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7179 } 7180 } 7181 7182 void 7183 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7184 struct init_cb_81xx *icb) 7185 { 7186 struct qla_hw_data *ha = vha->hw; 7187 7188 if (!QLA_TGT_MODE_ENABLED()) 7189 return; 7190 7191 if (ha->tgt.node_name_set) { 7192 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7193 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7194 } 7195 } 7196 7197 void 7198 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7199 { 7200 if (!QLA_TGT_MODE_ENABLED()) 7201 return; 7202 7203 ha->msix_count += 1; /* For ATIO Q */ 7204 } 7205 7206 7207 void 7208 qlt_modify_vp_config(struct scsi_qla_host *vha, 7209 struct vp_config_entry_24xx *vpmod) 7210 { 7211 /* enable target mode. Bit5 = 1 => disable */ 7212 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7213 vpmod->options_idx1 &= ~BIT_5; 7214 7215 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7216 if (qla_tgt_mode_enabled(vha)) 7217 vpmod->options_idx1 &= ~BIT_4; 7218 } 7219 7220 void 7221 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7222 { 7223 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7224 if (!QLA_TGT_MODE_ENABLED()) 7225 return; 7226 7227 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7228 IS_QLA28XX(ha)) { 7229 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7230 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7231 } else { 7232 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7233 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7234 } 7235 7236 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7237 7238 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7239 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7240 qlt_unknown_atio_work_fn); 7241 7242 qlt_clear_mode(base_vha); 7243 7244 qlt_update_vp_map(base_vha, SET_VP_IDX); 7245 } 7246 7247 irqreturn_t 7248 qla83xx_msix_atio_q(int irq, void *dev_id) 7249 { 7250 struct rsp_que *rsp; 7251 scsi_qla_host_t *vha; 7252 struct qla_hw_data *ha; 7253 unsigned long flags; 7254 7255 rsp = (struct rsp_que *) dev_id; 7256 ha = rsp->hw; 7257 vha = pci_get_drvdata(ha->pdev); 7258 7259 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7260 7261 qlt_24xx_process_atio_queue(vha, 0); 7262 7263 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7264 7265 return IRQ_HANDLED; 7266 } 7267 7268 static void 7269 qlt_handle_abts_recv_work(struct work_struct *work) 7270 { 7271 struct qla_tgt_sess_op *op = container_of(work, 7272 struct qla_tgt_sess_op, work); 7273 scsi_qla_host_t *vha = op->vha; 7274 struct qla_hw_data *ha = vha->hw; 7275 unsigned long flags; 7276 7277 if (qla2x00_reset_active(vha) || 7278 (op->chip_reset != ha->base_qpair->chip_reset)) 7279 return; 7280 7281 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7282 qlt_24xx_process_atio_queue(vha, 0); 7283 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7284 7285 spin_lock_irqsave(&ha->hardware_lock, flags); 7286 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7287 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7288 7289 kfree(op); 7290 } 7291 7292 void 7293 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7294 response_t *pkt) 7295 { 7296 struct qla_tgt_sess_op *op; 7297 7298 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7299 7300 if (!op) { 7301 /* do not reach for ATIO queue here. This is best effort err 7302 * recovery at this point. 7303 */ 7304 qlt_response_pkt_all_vps(vha, rsp, pkt); 7305 return; 7306 } 7307 7308 memcpy(&op->atio, pkt, sizeof(*pkt)); 7309 op->vha = vha; 7310 op->chip_reset = vha->hw->base_qpair->chip_reset; 7311 op->rsp = rsp; 7312 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7313 queue_work(qla_tgt_wq, &op->work); 7314 return; 7315 } 7316 7317 int 7318 qlt_mem_alloc(struct qla_hw_data *ha) 7319 { 7320 if (!QLA_TGT_MODE_ENABLED()) 7321 return 0; 7322 7323 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7324 sizeof(struct qla_tgt_vp_map), 7325 GFP_KERNEL); 7326 if (!ha->tgt.tgt_vp_map) 7327 return -ENOMEM; 7328 7329 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7330 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7331 &ha->tgt.atio_dma, GFP_KERNEL); 7332 if (!ha->tgt.atio_ring) { 7333 kfree(ha->tgt.tgt_vp_map); 7334 return -ENOMEM; 7335 } 7336 return 0; 7337 } 7338 7339 void 7340 qlt_mem_free(struct qla_hw_data *ha) 7341 { 7342 if (!QLA_TGT_MODE_ENABLED()) 7343 return; 7344 7345 if (ha->tgt.atio_ring) { 7346 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7347 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7348 ha->tgt.atio_dma); 7349 } 7350 ha->tgt.atio_ring = NULL; 7351 ha->tgt.atio_dma = 0; 7352 kfree(ha->tgt.tgt_vp_map); 7353 ha->tgt.tgt_vp_map = NULL; 7354 } 7355 7356 /* vport_slock to be held by the caller */ 7357 void 7358 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7359 { 7360 void *slot; 7361 u32 key; 7362 int rc; 7363 7364 key = vha->d_id.b24; 7365 7366 switch (cmd) { 7367 case SET_VP_IDX: 7368 if (!QLA_TGT_MODE_ENABLED()) 7369 return; 7370 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7371 break; 7372 case SET_AL_PA: 7373 slot = btree_lookup32(&vha->hw->host_map, key); 7374 if (!slot) { 7375 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7376 "Save vha in host_map %p %06x\n", vha, key); 7377 rc = btree_insert32(&vha->hw->host_map, 7378 key, vha, GFP_ATOMIC); 7379 if (rc) 7380 ql_log(ql_log_info, vha, 0xd03e, 7381 "Unable to insert s_id into host_map: %06x\n", 7382 key); 7383 return; 7384 } 7385 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7386 "replace existing vha in host_map %p %06x\n", vha, key); 7387 btree_update32(&vha->hw->host_map, key, vha); 7388 break; 7389 case RESET_VP_IDX: 7390 if (!QLA_TGT_MODE_ENABLED()) 7391 return; 7392 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7393 break; 7394 case RESET_AL_PA: 7395 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7396 "clear vha in host_map %p %06x\n", vha, key); 7397 slot = btree_lookup32(&vha->hw->host_map, key); 7398 if (slot) 7399 btree_remove32(&vha->hw->host_map, key); 7400 vha->d_id.b24 = 0; 7401 break; 7402 } 7403 } 7404 7405 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7406 { 7407 7408 if (!vha->d_id.b24) { 7409 vha->d_id = id; 7410 qlt_update_vp_map(vha, SET_AL_PA); 7411 } else if (vha->d_id.b24 != id.b24) { 7412 qlt_update_vp_map(vha, RESET_AL_PA); 7413 vha->d_id = id; 7414 qlt_update_vp_map(vha, SET_AL_PA); 7415 } 7416 } 7417 7418 static int __init qlt_parse_ini_mode(void) 7419 { 7420 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7421 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7422 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7423 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7424 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7425 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7426 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7427 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7428 else 7429 return false; 7430 7431 return true; 7432 } 7433 7434 int __init qlt_init(void) 7435 { 7436 int ret; 7437 7438 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7439 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7440 7441 if (!qlt_parse_ini_mode()) { 7442 ql_log(ql_log_fatal, NULL, 0xe06b, 7443 "qlt_parse_ini_mode() failed\n"); 7444 return -EINVAL; 7445 } 7446 7447 if (!QLA_TGT_MODE_ENABLED()) 7448 return 0; 7449 7450 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7451 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7452 qla_tgt_mgmt_cmd), 0, NULL); 7453 if (!qla_tgt_mgmt_cmd_cachep) { 7454 ql_log(ql_log_fatal, NULL, 0xd04b, 7455 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7456 return -ENOMEM; 7457 } 7458 7459 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7460 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7461 0, NULL); 7462 7463 if (!qla_tgt_plogi_cachep) { 7464 ql_log(ql_log_fatal, NULL, 0xe06d, 7465 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7466 ret = -ENOMEM; 7467 goto out_mgmt_cmd_cachep; 7468 } 7469 7470 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7471 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7472 if (!qla_tgt_mgmt_cmd_mempool) { 7473 ql_log(ql_log_fatal, NULL, 0xe06e, 7474 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7475 ret = -ENOMEM; 7476 goto out_plogi_cachep; 7477 } 7478 7479 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7480 if (!qla_tgt_wq) { 7481 ql_log(ql_log_fatal, NULL, 0xe06f, 7482 "alloc_workqueue for qla_tgt_wq failed\n"); 7483 ret = -ENOMEM; 7484 goto out_cmd_mempool; 7485 } 7486 /* 7487 * Return 1 to signal that initiator-mode is being disabled 7488 */ 7489 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7490 7491 out_cmd_mempool: 7492 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7493 out_plogi_cachep: 7494 kmem_cache_destroy(qla_tgt_plogi_cachep); 7495 out_mgmt_cmd_cachep: 7496 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7497 return ret; 7498 } 7499 7500 void qlt_exit(void) 7501 { 7502 if (!QLA_TGT_MODE_ENABLED()) 7503 return; 7504 7505 destroy_workqueue(qla_tgt_wq); 7506 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7507 kmem_cache_destroy(qla_tgt_plogi_cachep); 7508 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7509 } 7510