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 kref_put(&sp->cmd_kref, qla2x00_sp_release); 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 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, 660 qla2x00_async_nack_sp_done); 661 662 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 663 664 ql_dbg(ql_dbg_disc, vha, 0x20f4, 665 "Async-%s %8phC hndl %x %s\n", 666 sp->name, fcport->port_name, sp->handle, c); 667 668 rval = qla2x00_start_sp(sp); 669 if (rval != QLA_SUCCESS) 670 goto done_free_sp; 671 672 return rval; 673 674 done_free_sp: 675 kref_put(&sp->cmd_kref, qla2x00_sp_release); 676 done: 677 fcport->flags &= ~FCF_ASYNC_SENT; 678 return rval; 679 } 680 681 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 682 { 683 fc_port_t *t; 684 685 switch (e->u.nack.type) { 686 case SRB_NACK_PRLI: 687 t = e->u.nack.fcport; 688 flush_work(&t->del_work); 689 flush_work(&t->free_work); 690 mutex_lock(&vha->vha_tgt.tgt_mutex); 691 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 692 mutex_unlock(&vha->vha_tgt.tgt_mutex); 693 if (t) { 694 ql_log(ql_log_info, vha, 0xd034, 695 "%s create sess success %p", __func__, t); 696 /* create sess has an extra kref */ 697 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 698 } 699 break; 700 } 701 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 702 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 703 } 704 705 void qla24xx_delete_sess_fn(struct work_struct *work) 706 { 707 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 708 struct qla_hw_data *ha = NULL; 709 710 if (!fcport || !fcport->vha || !fcport->vha->hw) 711 return; 712 713 ha = fcport->vha->hw; 714 715 if (fcport->se_sess) { 716 ha->tgt.tgt_ops->shutdown_sess(fcport); 717 ha->tgt.tgt_ops->put_sess(fcport); 718 } else { 719 qlt_unreg_sess(fcport); 720 } 721 } 722 723 /* 724 * Called from qla2x00_reg_remote_port() 725 */ 726 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 727 { 728 struct qla_hw_data *ha = vha->hw; 729 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 730 struct fc_port *sess = fcport; 731 unsigned long flags; 732 733 if (!vha->hw->tgt.tgt_ops) 734 return; 735 736 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 737 if (tgt->tgt_stop) { 738 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 739 return; 740 } 741 742 if (fcport->disc_state == DSC_DELETE_PEND) { 743 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 744 return; 745 } 746 747 if (!sess->se_sess) { 748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 749 750 mutex_lock(&vha->vha_tgt.tgt_mutex); 751 sess = qlt_create_sess(vha, fcport, false); 752 mutex_unlock(&vha->vha_tgt.tgt_mutex); 753 754 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 755 } else { 756 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 757 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 758 return; 759 } 760 761 if (!kref_get_unless_zero(&sess->sess_kref)) { 762 ql_dbg(ql_dbg_disc, vha, 0x2107, 763 "%s: kref_get fail sess %8phC \n", 764 __func__, sess->port_name); 765 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 766 return; 767 } 768 769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 770 "qla_target(%u): %ssession for port %8phC " 771 "(loop ID %d) reappeared\n", vha->vp_idx, 772 sess->local ? "local " : "", sess->port_name, sess->loop_id); 773 774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 775 "Reappeared sess %p\n", sess); 776 777 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 778 fcport->loop_id, 779 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 780 } 781 782 if (sess && sess->local) { 783 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 784 "qla_target(%u): local session for " 785 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 786 fcport->port_name, sess->loop_id); 787 sess->local = 0; 788 } 789 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 790 791 ha->tgt.tgt_ops->put_sess(sess); 792 } 793 794 /* 795 * This is a zero-base ref-counting solution, since hardware_lock 796 * guarantees that ref_count is not modified concurrently. 797 * Upon successful return content of iocb is undefined 798 */ 799 static struct qlt_plogi_ack_t * 800 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 801 struct imm_ntfy_from_isp *iocb) 802 { 803 struct qlt_plogi_ack_t *pla; 804 805 lockdep_assert_held(&vha->hw->hardware_lock); 806 807 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 808 if (pla->id.b24 == id->b24) { 809 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 810 "%s %d %8phC Term INOT due to new INOT", 811 __func__, __LINE__, 812 pla->iocb.u.isp24.port_name); 813 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 814 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 815 return pla; 816 } 817 } 818 819 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 820 if (!pla) { 821 ql_dbg(ql_dbg_async, vha, 0x5088, 822 "qla_target(%d): Allocation of plogi_ack failed\n", 823 vha->vp_idx); 824 return NULL; 825 } 826 827 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 828 pla->id = *id; 829 list_add_tail(&pla->list, &vha->plogi_ack_list); 830 831 return pla; 832 } 833 834 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 835 struct qlt_plogi_ack_t *pla) 836 { 837 struct imm_ntfy_from_isp *iocb = &pla->iocb; 838 port_id_t port_id; 839 uint16_t loop_id; 840 fc_port_t *fcport = pla->fcport; 841 842 BUG_ON(!pla->ref_count); 843 pla->ref_count--; 844 845 if (pla->ref_count) 846 return; 847 848 ql_dbg(ql_dbg_disc, vha, 0x5089, 849 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 850 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 851 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 852 iocb->u.isp24.port_id[0], 853 le16_to_cpu(iocb->u.isp24.nport_handle), 854 iocb->u.isp24.exchange_address, iocb->ox_id); 855 856 port_id.b.domain = iocb->u.isp24.port_id[2]; 857 port_id.b.area = iocb->u.isp24.port_id[1]; 858 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 859 port_id.b.rsvd_1 = 0; 860 861 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 862 863 fcport->loop_id = loop_id; 864 fcport->d_id = port_id; 865 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 866 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 867 else 868 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 869 870 list_for_each_entry(fcport, &vha->vp_fcports, list) { 871 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 872 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 873 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 874 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 875 } 876 877 list_del(&pla->list); 878 kmem_cache_free(qla_tgt_plogi_cachep, pla); 879 } 880 881 void 882 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 883 struct fc_port *sess, enum qlt_plogi_link_t link) 884 { 885 struct imm_ntfy_from_isp *iocb = &pla->iocb; 886 /* Inc ref_count first because link might already be pointing at pla */ 887 pla->ref_count++; 888 889 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 890 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 891 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 892 sess, link, sess->port_name, 893 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 894 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 895 pla->ref_count, pla, link); 896 897 if (link == QLT_PLOGI_LINK_CONFLICT) { 898 switch (sess->disc_state) { 899 case DSC_DELETED: 900 case DSC_DELETE_PEND: 901 pla->ref_count--; 902 return; 903 default: 904 break; 905 } 906 } 907 908 if (sess->plogi_link[link]) 909 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 910 911 if (link == QLT_PLOGI_LINK_SAME_WWN) 912 pla->fcport = sess; 913 914 sess->plogi_link[link] = pla; 915 } 916 917 typedef struct { 918 /* These fields must be initialized by the caller */ 919 port_id_t id; 920 /* 921 * number of cmds dropped while we were waiting for 922 * initiator to ack LOGO initialize to 1 if LOGO is 923 * triggered by a command, otherwise, to 0 924 */ 925 int cmd_count; 926 927 /* These fields are used by callee */ 928 struct list_head list; 929 } qlt_port_logo_t; 930 931 static void 932 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 933 { 934 qlt_port_logo_t *tmp; 935 int res; 936 937 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 938 res = 0; 939 goto out; 940 } 941 942 mutex_lock(&vha->vha_tgt.tgt_mutex); 943 944 list_for_each_entry(tmp, &vha->logo_list, list) { 945 if (tmp->id.b24 == logo->id.b24) { 946 tmp->cmd_count += logo->cmd_count; 947 mutex_unlock(&vha->vha_tgt.tgt_mutex); 948 return; 949 } 950 } 951 952 list_add_tail(&logo->list, &vha->logo_list); 953 954 mutex_unlock(&vha->vha_tgt.tgt_mutex); 955 956 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 957 958 mutex_lock(&vha->vha_tgt.tgt_mutex); 959 list_del(&logo->list); 960 mutex_unlock(&vha->vha_tgt.tgt_mutex); 961 962 out: 963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 964 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 965 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 966 logo->cmd_count, res); 967 } 968 969 void qlt_free_session_done(struct work_struct *work) 970 { 971 struct fc_port *sess = container_of(work, struct fc_port, 972 free_work); 973 struct qla_tgt *tgt = sess->tgt; 974 struct scsi_qla_host *vha = sess->vha; 975 struct qla_hw_data *ha = vha->hw; 976 unsigned long flags; 977 bool logout_started = false; 978 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 979 struct qlt_plogi_ack_t *own = 980 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 981 982 ql_dbg(ql_dbg_disc, vha, 0xf084, 983 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 984 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 985 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 986 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 987 sess->logout_on_delete, sess->keep_nport_handle, 988 sess->send_els_logo); 989 990 if (!IS_SW_RESV_ADDR(sess->d_id)) { 991 if (ha->flags.edif_enabled && 992 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 993 sess->edif.authok = 0; 994 if (!ha->flags.host_shutting_down) { 995 ql_dbg(ql_dbg_edif, vha, 0x911e, 996 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 997 __func__, sess->port_name); 998 qla2x00_release_all_sadb(vha, sess); 999 } else { 1000 ql_dbg(ql_dbg_edif, vha, 0x911e, 1001 "%s bypassing release_all_sadb\n", 1002 __func__); 1003 } 1004 qla_edif_clear_appdata(vha, sess); 1005 qla_edif_sess_down(vha, sess); 1006 } 1007 qla2x00_mark_device_lost(vha, sess, 0); 1008 1009 if (sess->send_els_logo) { 1010 qlt_port_logo_t logo; 1011 1012 logo.id = sess->d_id; 1013 logo.cmd_count = 0; 1014 INIT_LIST_HEAD(&logo.list); 1015 if (!own) 1016 qlt_send_first_logo(vha, &logo); 1017 sess->send_els_logo = 0; 1018 } 1019 1020 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 1021 int rc; 1022 1023 if (!own || 1024 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1025 sess->logout_completed = 0; 1026 rc = qla2x00_post_async_logout_work(vha, sess, 1027 NULL); 1028 if (rc != QLA_SUCCESS) 1029 ql_log(ql_log_warn, vha, 0xf085, 1030 "Schedule logo failed sess %p rc %d\n", 1031 sess, rc); 1032 else 1033 logout_started = true; 1034 } else if (own && (own->iocb.u.isp24.status_subcode == 1035 ELS_PRLI) && ha->flags.rida_fmt2) { 1036 rc = qla2x00_post_async_prlo_work(vha, sess, 1037 NULL); 1038 if (rc != QLA_SUCCESS) 1039 ql_log(ql_log_warn, vha, 0xf085, 1040 "Schedule PRLO failed sess %p rc %d\n", 1041 sess, rc); 1042 else 1043 logout_started = true; 1044 } 1045 } /* if sess->logout_on_delete */ 1046 1047 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1048 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1049 sess->nvme_flag |= NVME_FLAG_DELETING; 1050 qla_nvme_unregister_remote_port(sess); 1051 } 1052 } 1053 1054 /* 1055 * Release the target session for FC Nexus from fabric module code. 1056 */ 1057 if (sess->se_sess != NULL) 1058 ha->tgt.tgt_ops->free_session(sess); 1059 1060 if (logout_started) { 1061 bool traced = false; 1062 u16 cnt = 0; 1063 1064 while (!READ_ONCE(sess->logout_completed)) { 1065 if (!traced) { 1066 ql_dbg(ql_dbg_disc, vha, 0xf086, 1067 "%s: waiting for sess %p logout\n", 1068 __func__, sess); 1069 traced = true; 1070 } 1071 msleep(100); 1072 cnt++; 1073 /* 1074 * Driver timeout is set to 22 Sec, update count value to loop 1075 * long enough for log-out to complete before advancing. Otherwise, 1076 * straddling logout can interfere with re-login attempt. 1077 */ 1078 if (cnt > 230) 1079 break; 1080 } 1081 1082 ql_dbg(ql_dbg_disc, vha, 0xf087, 1083 "%s: sess %p logout completed\n", __func__, sess); 1084 } 1085 1086 if (sess->logo_ack_needed) { 1087 sess->logo_ack_needed = 0; 1088 qla24xx_async_notify_ack(vha, sess, 1089 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1090 } 1091 1092 spin_lock_irqsave(&vha->work_lock, flags); 1093 sess->flags &= ~FCF_ASYNC_SENT; 1094 spin_unlock_irqrestore(&vha->work_lock, flags); 1095 1096 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1097 if (sess->se_sess) { 1098 sess->se_sess = NULL; 1099 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1100 tgt->sess_count--; 1101 } 1102 1103 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1104 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1105 sess->deleted = QLA_SESS_DELETED; 1106 1107 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1108 vha->fcport_count--; 1109 sess->login_succ = 0; 1110 } 1111 1112 qla2x00_clear_loop_id(sess); 1113 1114 if (sess->conflict) { 1115 sess->conflict->login_pause = 0; 1116 sess->conflict = NULL; 1117 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1118 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1119 } 1120 1121 { 1122 struct qlt_plogi_ack_t *con = 1123 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1124 struct imm_ntfy_from_isp *iocb; 1125 1126 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1127 1128 if (con) { 1129 iocb = &con->iocb; 1130 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1131 "se_sess %p / sess %p port %8phC is gone," 1132 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1133 sess->se_sess, sess, sess->port_name, 1134 own ? "releasing own PLOGI" : "no own PLOGI pending", 1135 own ? own->ref_count : -1, 1136 iocb->u.isp24.port_name, con->ref_count); 1137 qlt_plogi_ack_unref(vha, con); 1138 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1139 } else { 1140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1141 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1142 sess->se_sess, sess, sess->port_name, 1143 own ? "releasing own PLOGI" : 1144 "no own PLOGI pending", 1145 own ? own->ref_count : -1); 1146 } 1147 1148 if (own) { 1149 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1150 qlt_plogi_ack_unref(vha, own); 1151 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1152 } 1153 } 1154 1155 sess->explicit_logout = 0; 1156 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1157 sess->free_pending = 0; 1158 1159 qla2x00_dfs_remove_rport(vha, sess); 1160 1161 ql_dbg(ql_dbg_disc, vha, 0xf001, 1162 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1163 sess, sess->port_name, vha->fcport_count); 1164 1165 if (tgt && (tgt->sess_count == 0)) 1166 wake_up_all(&tgt->waitQ); 1167 1168 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1169 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1170 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1171 switch (vha->host->active_mode) { 1172 case MODE_INITIATOR: 1173 case MODE_DUAL: 1174 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1175 qla2xxx_wake_dpc(vha); 1176 break; 1177 case MODE_TARGET: 1178 default: 1179 /* no-op */ 1180 break; 1181 } 1182 } 1183 1184 if (vha->fcport_count == 0) 1185 wake_up_all(&vha->fcport_waitQ); 1186 } 1187 1188 /* ha->tgt.sess_lock supposed to be held on entry */ 1189 void qlt_unreg_sess(struct fc_port *sess) 1190 { 1191 struct scsi_qla_host *vha = sess->vha; 1192 unsigned long flags; 1193 1194 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1195 "%s sess %p for deletion %8phC\n", 1196 __func__, sess, sess->port_name); 1197 1198 spin_lock_irqsave(&sess->vha->work_lock, flags); 1199 if (sess->free_pending) { 1200 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1201 return; 1202 } 1203 sess->free_pending = 1; 1204 /* 1205 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1206 * management from being sent. 1207 */ 1208 sess->flags |= FCF_ASYNC_SENT; 1209 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1210 1211 if (sess->se_sess) 1212 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1213 1214 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1215 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1216 sess->last_rscn_gen = sess->rscn_gen; 1217 sess->last_login_gen = sess->login_gen; 1218 1219 queue_work(sess->vha->hw->wq, &sess->free_work); 1220 } 1221 EXPORT_SYMBOL(qlt_unreg_sess); 1222 1223 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1224 { 1225 struct qla_hw_data *ha = vha->hw; 1226 struct fc_port *sess = NULL; 1227 uint16_t loop_id; 1228 int res = 0; 1229 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1230 unsigned long flags; 1231 1232 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1233 if (loop_id == 0xFFFF) { 1234 /* Global event */ 1235 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1236 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1237 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1238 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1239 } else { 1240 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1241 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1242 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1243 } 1244 1245 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1246 "Using sess for qla_tgt_reset: %p\n", sess); 1247 if (!sess) { 1248 res = -ESRCH; 1249 return res; 1250 } 1251 1252 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1253 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1254 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1255 mcmd, loop_id); 1256 1257 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1258 } 1259 1260 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1261 { 1262 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1263 sess->logout_on_delete = 0; 1264 sess->logo_ack_needed = 0; 1265 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1266 } 1267 } 1268 1269 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1270 { 1271 struct qla_tgt *tgt = sess->tgt; 1272 unsigned long flags; 1273 u16 sec; 1274 1275 switch (sess->disc_state) { 1276 case DSC_DELETE_PEND: 1277 return; 1278 case DSC_DELETED: 1279 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1280 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1281 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1282 wake_up_all(&tgt->waitQ); 1283 1284 if (sess->vha->fcport_count == 0) 1285 wake_up_all(&sess->vha->fcport_waitQ); 1286 return; 1287 } 1288 break; 1289 case DSC_UPD_FCPORT: 1290 /* 1291 * This port is not done reporting to upper layer. 1292 * let it finish 1293 */ 1294 sess->next_disc_state = DSC_DELETE_PEND; 1295 sec = jiffies_to_msecs(jiffies - 1296 sess->jiffies_at_registration)/1000; 1297 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1298 sess->sec_since_registration = sec; 1299 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1300 "%s %8phC : Slow Rport registration(%d Sec)\n", 1301 __func__, sess->port_name, sec); 1302 } 1303 return; 1304 default: 1305 break; 1306 } 1307 1308 spin_lock_irqsave(&sess->vha->work_lock, flags); 1309 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1310 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1311 return; 1312 } 1313 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1314 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1315 1316 sess->prli_pend_timer = 0; 1317 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1318 1319 qla24xx_chk_fcp_state(sess); 1320 1321 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1322 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1323 sess, sess->port_name, sess->fc4_type); 1324 1325 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1326 } 1327 1328 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1329 { 1330 struct fc_port *sess; 1331 scsi_qla_host_t *vha = tgt->vha; 1332 1333 list_for_each_entry(sess, &vha->vp_fcports, list) { 1334 if (sess->se_sess) 1335 qlt_schedule_sess_for_deletion(sess); 1336 } 1337 1338 /* At this point tgt could be already dead */ 1339 } 1340 1341 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1342 uint16_t *loop_id) 1343 { 1344 struct qla_hw_data *ha = vha->hw; 1345 dma_addr_t gid_list_dma; 1346 struct gid_list_info *gid_list, *gid; 1347 int res, rc, i; 1348 uint16_t entries; 1349 1350 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1351 &gid_list_dma, GFP_KERNEL); 1352 if (!gid_list) { 1353 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1354 "qla_target(%d): DMA Alloc failed of %u\n", 1355 vha->vp_idx, qla2x00_gid_list_size(ha)); 1356 return -ENOMEM; 1357 } 1358 1359 /* Get list of logged in devices */ 1360 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1361 if (rc != QLA_SUCCESS) { 1362 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1363 "qla_target(%d): get_id_list() failed: %x\n", 1364 vha->vp_idx, rc); 1365 res = -EBUSY; 1366 goto out_free_id_list; 1367 } 1368 1369 gid = gid_list; 1370 res = -ENOENT; 1371 for (i = 0; i < entries; i++) { 1372 if (gid->al_pa == s_id.al_pa && 1373 gid->area == s_id.area && 1374 gid->domain == s_id.domain) { 1375 *loop_id = le16_to_cpu(gid->loop_id); 1376 res = 0; 1377 break; 1378 } 1379 gid = (void *)gid + ha->gid_list_info_size; 1380 } 1381 1382 out_free_id_list: 1383 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1384 gid_list, gid_list_dma); 1385 return res; 1386 } 1387 1388 /* 1389 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1390 * Caller must put it. 1391 */ 1392 static struct fc_port *qlt_create_sess( 1393 struct scsi_qla_host *vha, 1394 fc_port_t *fcport, 1395 bool local) 1396 { 1397 struct qla_hw_data *ha = vha->hw; 1398 struct fc_port *sess = fcport; 1399 unsigned long flags; 1400 1401 if (vha->vha_tgt.qla_tgt->tgt_stop) 1402 return NULL; 1403 1404 if (fcport->se_sess) { 1405 if (!kref_get_unless_zero(&sess->sess_kref)) { 1406 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1407 "%s: kref_get_unless_zero failed for %8phC\n", 1408 __func__, sess->port_name); 1409 return NULL; 1410 } 1411 return fcport; 1412 } 1413 sess->tgt = vha->vha_tgt.qla_tgt; 1414 sess->local = local; 1415 1416 /* 1417 * Under normal circumstances we want to logout from firmware when 1418 * session eventually ends and release corresponding nport handle. 1419 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1420 * code will adjust these flags as necessary. 1421 */ 1422 sess->logout_on_delete = 1; 1423 sess->keep_nport_handle = 0; 1424 sess->logout_completed = 0; 1425 1426 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1427 &fcport->port_name[0], sess) < 0) { 1428 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1429 "(%d) %8phC check_initiator_node_acl failed\n", 1430 vha->vp_idx, fcport->port_name); 1431 return NULL; 1432 } else { 1433 kref_init(&fcport->sess_kref); 1434 /* 1435 * Take an extra reference to ->sess_kref here to handle 1436 * fc_port access across ->tgt.sess_lock reaquire. 1437 */ 1438 if (!kref_get_unless_zero(&sess->sess_kref)) { 1439 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1440 "%s: kref_get_unless_zero failed for %8phC\n", 1441 __func__, sess->port_name); 1442 return NULL; 1443 } 1444 1445 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1446 if (!IS_SW_RESV_ADDR(sess->d_id)) 1447 vha->vha_tgt.qla_tgt->sess_count++; 1448 1449 qlt_do_generation_tick(vha, &sess->generation); 1450 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1451 } 1452 1453 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1454 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1455 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1456 vha->vha_tgt.qla_tgt->sess_count); 1457 1458 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1459 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1460 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1461 vha->vp_idx, local ? "local " : "", fcport->port_name, 1462 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1463 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1464 1465 return sess; 1466 } 1467 1468 /* 1469 * max_gen - specifies maximum session generation 1470 * at which this deletion requestion is still valid 1471 */ 1472 void 1473 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1474 { 1475 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1476 struct fc_port *sess = fcport; 1477 unsigned long flags; 1478 1479 if (!vha->hw->tgt.tgt_ops) 1480 return; 1481 1482 if (!tgt) 1483 return; 1484 1485 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1486 if (tgt->tgt_stop) { 1487 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1488 return; 1489 } 1490 if (!sess->se_sess) { 1491 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1492 return; 1493 } 1494 1495 if (max_gen - sess->generation < 0) { 1496 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1498 "Ignoring stale deletion request for se_sess %p / sess %p" 1499 " for port %8phC, req_gen %d, sess_gen %d\n", 1500 sess->se_sess, sess, sess->port_name, max_gen, 1501 sess->generation); 1502 return; 1503 } 1504 1505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1506 1507 sess->local = 1; 1508 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1509 qlt_schedule_sess_for_deletion(sess); 1510 } 1511 1512 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1513 { 1514 struct qla_hw_data *ha = tgt->ha; 1515 unsigned long flags; 1516 int res; 1517 /* 1518 * We need to protect against race, when tgt is freed before or 1519 * inside wake_up() 1520 */ 1521 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1522 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1523 "tgt %p, sess_count=%d\n", 1524 tgt, tgt->sess_count); 1525 res = (tgt->sess_count == 0); 1526 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1527 1528 return res; 1529 } 1530 1531 /* Called by tcm_qla2xxx configfs code */ 1532 int qlt_stop_phase1(struct qla_tgt *tgt) 1533 { 1534 struct scsi_qla_host *vha = tgt->vha; 1535 struct qla_hw_data *ha = tgt->ha; 1536 unsigned long flags; 1537 1538 mutex_lock(&ha->optrom_mutex); 1539 mutex_lock(&qla_tgt_mutex); 1540 1541 if (tgt->tgt_stop || tgt->tgt_stopped) { 1542 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1543 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1544 mutex_unlock(&qla_tgt_mutex); 1545 mutex_unlock(&ha->optrom_mutex); 1546 return -EPERM; 1547 } 1548 1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1550 vha->host_no, vha); 1551 /* 1552 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1553 * Lock is needed, because we still can get an incoming packet. 1554 */ 1555 mutex_lock(&vha->vha_tgt.tgt_mutex); 1556 tgt->tgt_stop = 1; 1557 qlt_clear_tgt_db(tgt); 1558 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1559 mutex_unlock(&qla_tgt_mutex); 1560 1561 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1562 "Waiting for sess works (tgt %p)", tgt); 1563 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1564 while (!list_empty(&tgt->sess_works_list)) { 1565 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1566 flush_scheduled_work(); 1567 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1568 } 1569 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1570 1571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1572 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1573 1574 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1575 1576 /* Big hammer */ 1577 if (!ha->flags.host_shutting_down && 1578 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1579 qlt_disable_vha(vha); 1580 1581 /* Wait for sessions to clear out (just in case) */ 1582 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1583 mutex_unlock(&ha->optrom_mutex); 1584 1585 return 0; 1586 } 1587 EXPORT_SYMBOL(qlt_stop_phase1); 1588 1589 /* Called by tcm_qla2xxx configfs code */ 1590 void qlt_stop_phase2(struct qla_tgt *tgt) 1591 { 1592 scsi_qla_host_t *vha = tgt->vha; 1593 1594 if (tgt->tgt_stopped) { 1595 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1596 "Already in tgt->tgt_stopped state\n"); 1597 dump_stack(); 1598 return; 1599 } 1600 if (!tgt->tgt_stop) { 1601 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1602 "%s: phase1 stop is not completed\n", __func__); 1603 dump_stack(); 1604 return; 1605 } 1606 1607 mutex_lock(&tgt->ha->optrom_mutex); 1608 mutex_lock(&vha->vha_tgt.tgt_mutex); 1609 tgt->tgt_stop = 0; 1610 tgt->tgt_stopped = 1; 1611 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1612 mutex_unlock(&tgt->ha->optrom_mutex); 1613 1614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1615 tgt); 1616 1617 switch (vha->qlini_mode) { 1618 case QLA2XXX_INI_MODE_EXCLUSIVE: 1619 vha->flags.online = 1; 1620 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1621 break; 1622 default: 1623 break; 1624 } 1625 } 1626 EXPORT_SYMBOL(qlt_stop_phase2); 1627 1628 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1629 static void qlt_release(struct qla_tgt *tgt) 1630 { 1631 scsi_qla_host_t *vha = tgt->vha; 1632 void *node; 1633 u64 key = 0; 1634 u16 i; 1635 struct qla_qpair_hint *h; 1636 struct qla_hw_data *ha = vha->hw; 1637 1638 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1639 qlt_stop_phase1(tgt); 1640 1641 if (!tgt->tgt_stopped) 1642 qlt_stop_phase2(tgt); 1643 1644 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1645 unsigned long flags; 1646 1647 h = &tgt->qphints[i]; 1648 if (h->qpair) { 1649 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1650 list_del(&h->hint_elem); 1651 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1652 h->qpair = NULL; 1653 } 1654 } 1655 kfree(tgt->qphints); 1656 mutex_lock(&qla_tgt_mutex); 1657 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1658 mutex_unlock(&qla_tgt_mutex); 1659 1660 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1661 btree_remove64(&tgt->lun_qpair_map, key); 1662 1663 btree_destroy64(&tgt->lun_qpair_map); 1664 1665 if (vha->vp_idx) 1666 if (ha->tgt.tgt_ops && 1667 ha->tgt.tgt_ops->remove_target && 1668 vha->vha_tgt.target_lport_ptr) 1669 ha->tgt.tgt_ops->remove_target(vha); 1670 1671 vha->vha_tgt.qla_tgt = NULL; 1672 1673 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1674 "Release of tgt %p finished\n", tgt); 1675 1676 kfree(tgt); 1677 } 1678 1679 /* ha->hardware_lock supposed to be held on entry */ 1680 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1681 const void *param, unsigned int param_size) 1682 { 1683 struct qla_tgt_sess_work_param *prm; 1684 unsigned long flags; 1685 1686 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1687 if (!prm) { 1688 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1689 "qla_target(%d): Unable to create session " 1690 "work, command will be refused", 0); 1691 return -ENOMEM; 1692 } 1693 1694 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1695 "Scheduling work (type %d, prm %p)" 1696 " to find session for param %p (size %d, tgt %p)\n", 1697 type, prm, param, param_size, tgt); 1698 1699 prm->type = type; 1700 memcpy(&prm->tm_iocb, param, param_size); 1701 1702 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1703 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1704 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1705 1706 schedule_work(&tgt->sess_work); 1707 1708 return 0; 1709 } 1710 1711 /* 1712 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1713 */ 1714 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1715 struct imm_ntfy_from_isp *ntfy, 1716 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1717 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1718 { 1719 struct scsi_qla_host *vha = qpair->vha; 1720 struct qla_hw_data *ha = vha->hw; 1721 request_t *pkt; 1722 struct nack_to_isp *nack; 1723 1724 if (!ha->flags.fw_started) 1725 return; 1726 1727 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1728 1729 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1730 if (!pkt) { 1731 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1732 "qla_target(%d): %s failed: unable to allocate " 1733 "request packet\n", vha->vp_idx, __func__); 1734 return; 1735 } 1736 1737 if (vha->vha_tgt.qla_tgt != NULL) 1738 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1739 1740 pkt->entry_type = NOTIFY_ACK_TYPE; 1741 pkt->entry_count = 1; 1742 1743 nack = (struct nack_to_isp *)pkt; 1744 nack->ox_id = ntfy->ox_id; 1745 1746 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1747 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1748 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1749 nack->u.isp24.flags = ntfy->u.isp24.flags & 1750 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1751 } 1752 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1753 nack->u.isp24.status = ntfy->u.isp24.status; 1754 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1755 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1756 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1757 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1758 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1759 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1760 nack->u.isp24.srr_reject_code = srr_reject_code; 1761 nack->u.isp24.srr_reject_code_expl = srr_explan; 1762 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1763 1764 /* TODO qualify this with EDIF enable */ 1765 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1766 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1767 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1768 } 1769 1770 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1771 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1772 vha->vp_idx, nack->u.isp24.status); 1773 1774 /* Memory Barrier */ 1775 wmb(); 1776 qla2x00_start_iocbs(vha, qpair->req); 1777 } 1778 1779 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1780 { 1781 struct scsi_qla_host *vha = mcmd->vha; 1782 struct qla_hw_data *ha = vha->hw; 1783 struct abts_resp_to_24xx *resp; 1784 __le32 f_ctl; 1785 uint32_t h; 1786 uint8_t *p; 1787 int rc; 1788 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1789 struct qla_qpair *qpair = mcmd->qpair; 1790 1791 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1792 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1793 ha, mcmd->fc_tm_rsp); 1794 1795 rc = qlt_check_reserve_free_req(qpair, 1); 1796 if (rc) { 1797 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1798 "qla_target(%d): %s failed: unable to allocate request packet\n", 1799 vha->vp_idx, __func__); 1800 return -EAGAIN; 1801 } 1802 1803 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1804 memset(resp, 0, sizeof(*resp)); 1805 1806 h = qlt_make_handle(qpair); 1807 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1808 /* 1809 * CTIO type 7 from the firmware doesn't provide a way to 1810 * know the initiator's LOOP ID, hence we can't find 1811 * the session and, so, the command. 1812 */ 1813 return -EAGAIN; 1814 } else { 1815 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1816 } 1817 1818 resp->handle = make_handle(qpair->req->id, h); 1819 resp->entry_type = ABTS_RESP_24XX; 1820 resp->entry_count = 1; 1821 resp->nport_handle = abts->nport_handle; 1822 resp->vp_index = vha->vp_idx; 1823 resp->sof_type = abts->sof_type; 1824 resp->exchange_address = abts->exchange_address; 1825 resp->fcp_hdr_le = abts->fcp_hdr_le; 1826 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1827 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1828 F_CTL_SEQ_INITIATIVE); 1829 p = (uint8_t *)&f_ctl; 1830 resp->fcp_hdr_le.f_ctl[0] = *p++; 1831 resp->fcp_hdr_le.f_ctl[1] = *p++; 1832 resp->fcp_hdr_le.f_ctl[2] = *p; 1833 1834 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1835 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1836 1837 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1838 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1839 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1840 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1841 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1842 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1843 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1844 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1845 } else { 1846 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1847 resp->payload.ba_rjt.reason_code = 1848 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1849 /* Other bytes are zero */ 1850 } 1851 1852 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1853 1854 /* Memory Barrier */ 1855 wmb(); 1856 if (qpair->reqq_start_iocbs) 1857 qpair->reqq_start_iocbs(qpair); 1858 else 1859 qla2x00_start_iocbs(vha, qpair->req); 1860 1861 return rc; 1862 } 1863 1864 /* 1865 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1866 */ 1867 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1868 struct abts_recv_from_24xx *abts, uint32_t status, 1869 bool ids_reversed) 1870 { 1871 struct scsi_qla_host *vha = qpair->vha; 1872 struct qla_hw_data *ha = vha->hw; 1873 struct abts_resp_to_24xx *resp; 1874 __le32 f_ctl; 1875 uint8_t *p; 1876 1877 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1878 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1879 ha, abts, status); 1880 1881 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1882 NULL); 1883 if (!resp) { 1884 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1885 "qla_target(%d): %s failed: unable to allocate " 1886 "request packet", vha->vp_idx, __func__); 1887 return; 1888 } 1889 1890 resp->entry_type = ABTS_RESP_24XX; 1891 resp->handle = QLA_TGT_SKIP_HANDLE; 1892 resp->entry_count = 1; 1893 resp->nport_handle = abts->nport_handle; 1894 resp->vp_index = vha->vp_idx; 1895 resp->sof_type = abts->sof_type; 1896 resp->exchange_address = abts->exchange_address; 1897 resp->fcp_hdr_le = abts->fcp_hdr_le; 1898 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1899 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1900 F_CTL_SEQ_INITIATIVE); 1901 p = (uint8_t *)&f_ctl; 1902 resp->fcp_hdr_le.f_ctl[0] = *p++; 1903 resp->fcp_hdr_le.f_ctl[1] = *p++; 1904 resp->fcp_hdr_le.f_ctl[2] = *p; 1905 if (ids_reversed) { 1906 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1907 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1908 } else { 1909 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1910 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1911 } 1912 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1913 if (status == FCP_TMF_CMPL) { 1914 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1915 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1916 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1917 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1918 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1919 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1920 } else { 1921 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1922 resp->payload.ba_rjt.reason_code = 1923 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1924 /* Other bytes are zero */ 1925 } 1926 1927 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1928 1929 /* Memory Barrier */ 1930 wmb(); 1931 if (qpair->reqq_start_iocbs) 1932 qpair->reqq_start_iocbs(qpair); 1933 else 1934 qla2x00_start_iocbs(vha, qpair->req); 1935 } 1936 1937 /* 1938 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1939 */ 1940 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1941 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1942 { 1943 struct ctio7_to_24xx *ctio; 1944 u16 tmp; 1945 struct abts_recv_from_24xx *entry; 1946 1947 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1948 if (ctio == NULL) { 1949 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1950 "qla_target(%d): %s failed: unable to allocate " 1951 "request packet\n", vha->vp_idx, __func__); 1952 return; 1953 } 1954 1955 if (mcmd) 1956 /* abts from remote port */ 1957 entry = &mcmd->orig_iocb.abts; 1958 else 1959 /* abts from this driver. */ 1960 entry = (struct abts_recv_from_24xx *)pkt; 1961 1962 /* 1963 * We've got on entrance firmware's response on by us generated 1964 * ABTS response. So, in it ID fields are reversed. 1965 */ 1966 1967 ctio->entry_type = CTIO_TYPE7; 1968 ctio->entry_count = 1; 1969 ctio->nport_handle = entry->nport_handle; 1970 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1971 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1972 ctio->vp_index = vha->vp_idx; 1973 ctio->exchange_addr = entry->exchange_addr_to_abort; 1974 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1975 1976 if (mcmd) { 1977 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1978 1979 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1980 tmp |= (mcmd->abort_io_attr << 9); 1981 else if (qpair->retry_term_cnt & 1) 1982 tmp |= (0x4 << 9); 1983 } else { 1984 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1985 1986 if (qpair->retry_term_cnt & 1) 1987 tmp |= (0x4 << 9); 1988 } 1989 ctio->u.status1.flags = cpu_to_le16(tmp); 1990 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1991 1992 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1993 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1994 le16_to_cpu(ctio->u.status1.flags), 1995 le16_to_cpu(ctio->u.status1.ox_id), 1996 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1997 1998 /* Memory Barrier */ 1999 wmb(); 2000 if (qpair->reqq_start_iocbs) 2001 qpair->reqq_start_iocbs(qpair); 2002 else 2003 qla2x00_start_iocbs(vha, qpair->req); 2004 2005 if (mcmd) 2006 qlt_build_abts_resp_iocb(mcmd); 2007 else 2008 qlt_24xx_send_abts_resp(qpair, 2009 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2010 2011 } 2012 2013 /* drop cmds for the given lun 2014 * XXX only looks for cmds on the port through which lun reset was recieved 2015 * XXX does not go through the list of other port (which may have cmds 2016 * for the same lun) 2017 */ 2018 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2019 { 2020 struct qla_tgt_sess_op *op; 2021 struct qla_tgt_cmd *cmd; 2022 uint32_t key; 2023 unsigned long flags; 2024 2025 key = sid_to_key(s_id); 2026 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2027 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2028 uint32_t op_key; 2029 u64 op_lun; 2030 2031 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2032 op_lun = scsilun_to_int( 2033 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2034 if (op_key == key && op_lun == lun) 2035 op->aborted = true; 2036 } 2037 2038 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2039 uint32_t cmd_key; 2040 u64 cmd_lun; 2041 2042 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2043 cmd_lun = scsilun_to_int( 2044 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2045 if (cmd_key == key && cmd_lun == lun) 2046 cmd->aborted = 1; 2047 } 2048 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2049 } 2050 2051 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2052 uint64_t unpacked_lun) 2053 { 2054 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2055 struct qla_qpair_hint *h = NULL; 2056 2057 if (vha->flags.qpairs_available) { 2058 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2059 if (!h) 2060 h = &tgt->qphints[0]; 2061 } else { 2062 h = &tgt->qphints[0]; 2063 } 2064 2065 return h; 2066 } 2067 2068 static void qlt_do_tmr_work(struct work_struct *work) 2069 { 2070 struct qla_tgt_mgmt_cmd *mcmd = 2071 container_of(work, struct qla_tgt_mgmt_cmd, work); 2072 struct qla_hw_data *ha = mcmd->vha->hw; 2073 int rc; 2074 uint32_t tag; 2075 unsigned long flags; 2076 2077 switch (mcmd->tmr_func) { 2078 case QLA_TGT_ABTS: 2079 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2080 break; 2081 default: 2082 tag = 0; 2083 break; 2084 } 2085 2086 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2087 mcmd->tmr_func, tag); 2088 2089 if (rc != 0) { 2090 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2091 switch (mcmd->tmr_func) { 2092 case QLA_TGT_ABTS: 2093 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2094 qlt_build_abts_resp_iocb(mcmd); 2095 break; 2096 case QLA_TGT_LUN_RESET: 2097 case QLA_TGT_CLEAR_TS: 2098 case QLA_TGT_ABORT_TS: 2099 case QLA_TGT_CLEAR_ACA: 2100 case QLA_TGT_TARGET_RESET: 2101 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2102 qla_sam_status); 2103 break; 2104 2105 case QLA_TGT_ABORT_ALL: 2106 case QLA_TGT_NEXUS_LOSS_SESS: 2107 case QLA_TGT_NEXUS_LOSS: 2108 qlt_send_notify_ack(mcmd->qpair, 2109 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2110 break; 2111 } 2112 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2113 2114 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2115 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2116 mcmd->vha->vp_idx, rc); 2117 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2118 } 2119 } 2120 2121 /* ha->hardware_lock supposed to be held on entry */ 2122 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2123 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2124 { 2125 struct qla_hw_data *ha = vha->hw; 2126 struct qla_tgt_mgmt_cmd *mcmd; 2127 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2128 struct qla_tgt_cmd *abort_cmd; 2129 2130 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2131 "qla_target(%d): task abort (tag=%d)\n", 2132 vha->vp_idx, abts->exchange_addr_to_abort); 2133 2134 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2135 if (mcmd == NULL) { 2136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2137 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2138 vha->vp_idx, __func__); 2139 return -ENOMEM; 2140 } 2141 memset(mcmd, 0, sizeof(*mcmd)); 2142 mcmd->cmd_type = TYPE_TGT_TMCMD; 2143 mcmd->sess = sess; 2144 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2145 mcmd->reset_count = ha->base_qpair->chip_reset; 2146 mcmd->tmr_func = QLA_TGT_ABTS; 2147 mcmd->qpair = h->qpair; 2148 mcmd->vha = vha; 2149 2150 /* 2151 * LUN is looked up by target-core internally based on the passed 2152 * abts->exchange_addr_to_abort tag. 2153 */ 2154 mcmd->se_cmd.cpuid = h->cpuid; 2155 2156 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2157 le32_to_cpu(abts->exchange_addr_to_abort)); 2158 if (!abort_cmd) 2159 return -EIO; 2160 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2161 2162 if (abort_cmd->qpair) { 2163 mcmd->qpair = abort_cmd->qpair; 2164 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2165 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2166 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2167 } 2168 2169 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2170 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2171 2172 return 0; 2173 } 2174 2175 /* 2176 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2177 */ 2178 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2179 struct abts_recv_from_24xx *abts) 2180 { 2181 struct qla_hw_data *ha = vha->hw; 2182 struct fc_port *sess; 2183 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2184 be_id_t s_id; 2185 int rc; 2186 unsigned long flags; 2187 2188 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2190 "qla_target(%d): ABTS: Abort Sequence not " 2191 "supported\n", vha->vp_idx); 2192 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2193 false); 2194 return; 2195 } 2196 2197 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2198 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2199 "qla_target(%d): ABTS: Unknown Exchange " 2200 "Address received\n", vha->vp_idx); 2201 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2202 false); 2203 return; 2204 } 2205 2206 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2207 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2208 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2209 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2210 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2211 2212 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2213 2214 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2215 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2216 if (!sess) { 2217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2218 "qla_target(%d): task abort for non-existent session\n", 2219 vha->vp_idx); 2220 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2221 2222 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2223 false); 2224 return; 2225 } 2226 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2227 2228 2229 if (sess->deleted) { 2230 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2231 false); 2232 return; 2233 } 2234 2235 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2236 if (rc != 0) { 2237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2238 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2239 vha->vp_idx, rc); 2240 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2241 false); 2242 return; 2243 } 2244 } 2245 2246 /* 2247 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2248 */ 2249 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2250 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2251 { 2252 struct scsi_qla_host *ha = mcmd->vha; 2253 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2254 struct ctio7_to_24xx *ctio; 2255 uint16_t temp; 2256 2257 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2258 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2259 ha, atio, resp_code); 2260 2261 2262 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2263 if (ctio == NULL) { 2264 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2265 "qla_target(%d): %s failed: unable to allocate " 2266 "request packet\n", ha->vp_idx, __func__); 2267 return; 2268 } 2269 2270 ctio->entry_type = CTIO_TYPE7; 2271 ctio->entry_count = 1; 2272 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2273 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2274 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2275 ctio->vp_index = ha->vp_idx; 2276 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2277 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2278 temp = (atio->u.isp24.attr << 9)| 2279 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2280 ctio->u.status1.flags = cpu_to_le16(temp); 2281 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2282 ctio->u.status1.ox_id = cpu_to_le16(temp); 2283 ctio->u.status1.scsi_status = 2284 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2285 ctio->u.status1.response_len = cpu_to_le16(8); 2286 ctio->u.status1.sense_data[0] = resp_code; 2287 2288 /* Memory Barrier */ 2289 wmb(); 2290 if (qpair->reqq_start_iocbs) 2291 qpair->reqq_start_iocbs(qpair); 2292 else 2293 qla2x00_start_iocbs(ha, qpair->req); 2294 } 2295 2296 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2297 { 2298 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2299 } 2300 EXPORT_SYMBOL(qlt_free_mcmd); 2301 2302 /* 2303 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2304 * reacquire 2305 */ 2306 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2307 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2308 { 2309 struct atio_from_isp *atio = &cmd->atio; 2310 struct ctio7_to_24xx *ctio; 2311 uint16_t temp; 2312 struct scsi_qla_host *vha = cmd->vha; 2313 2314 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2315 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2316 "sense_key=%02x, asc=%02x, ascq=%02x", 2317 vha, atio, scsi_status, sense_key, asc, ascq); 2318 2319 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2320 if (!ctio) { 2321 ql_dbg(ql_dbg_async, vha, 0x3067, 2322 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2323 vha->host_no, __func__); 2324 goto out; 2325 } 2326 2327 ctio->entry_type = CTIO_TYPE7; 2328 ctio->entry_count = 1; 2329 ctio->handle = QLA_TGT_SKIP_HANDLE; 2330 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2331 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2332 ctio->vp_index = vha->vp_idx; 2333 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2334 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2335 temp = (atio->u.isp24.attr << 9) | 2336 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2337 ctio->u.status1.flags = cpu_to_le16(temp); 2338 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2339 ctio->u.status1.ox_id = cpu_to_le16(temp); 2340 ctio->u.status1.scsi_status = 2341 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2342 ctio->u.status1.response_len = cpu_to_le16(18); 2343 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2344 2345 if (ctio->u.status1.residual != 0) 2346 ctio->u.status1.scsi_status |= 2347 cpu_to_le16(SS_RESIDUAL_UNDER); 2348 2349 /* Fixed format sense data. */ 2350 ctio->u.status1.sense_data[0] = 0x70; 2351 ctio->u.status1.sense_data[2] = sense_key; 2352 /* Additional sense length */ 2353 ctio->u.status1.sense_data[7] = 0xa; 2354 /* ASC and ASCQ */ 2355 ctio->u.status1.sense_data[12] = asc; 2356 ctio->u.status1.sense_data[13] = ascq; 2357 2358 /* Memory Barrier */ 2359 wmb(); 2360 2361 if (qpair->reqq_start_iocbs) 2362 qpair->reqq_start_iocbs(qpair); 2363 else 2364 qla2x00_start_iocbs(vha, qpair->req); 2365 2366 out: 2367 return; 2368 } 2369 2370 /* callback from target fabric module code */ 2371 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2372 { 2373 struct scsi_qla_host *vha = mcmd->sess->vha; 2374 struct qla_hw_data *ha = vha->hw; 2375 unsigned long flags; 2376 struct qla_qpair *qpair = mcmd->qpair; 2377 bool free_mcmd = true; 2378 2379 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2380 "TM response mcmd (%p) status %#x state %#x", 2381 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2382 2383 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2384 2385 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2386 /* 2387 * Either the port is not online or this request was from 2388 * previous life, just abort the processing. 2389 */ 2390 ql_dbg(ql_dbg_async, vha, 0xe100, 2391 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2392 vha->flags.online, qla2x00_reset_active(vha), 2393 mcmd->reset_count, qpair->chip_reset); 2394 ha->tgt.tgt_ops->free_mcmd(mcmd); 2395 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2396 return; 2397 } 2398 2399 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2400 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2401 case ELS_LOGO: 2402 case ELS_PRLO: 2403 case ELS_TPRLO: 2404 ql_dbg(ql_dbg_disc, vha, 0x2106, 2405 "TM response logo %8phC status %#x state %#x", 2406 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2407 mcmd->flags); 2408 qlt_schedule_sess_for_deletion(mcmd->sess); 2409 break; 2410 default: 2411 qlt_send_notify_ack(vha->hw->base_qpair, 2412 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2413 break; 2414 } 2415 } else { 2416 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2417 qlt_build_abts_resp_iocb(mcmd); 2418 free_mcmd = false; 2419 } else 2420 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2421 mcmd->fc_tm_rsp); 2422 } 2423 /* 2424 * Make the callback for ->free_mcmd() to queue_work() and invoke 2425 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2426 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2427 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2428 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2429 * qlt_xmit_tm_rsp() returns here.. 2430 */ 2431 if (free_mcmd) 2432 ha->tgt.tgt_ops->free_mcmd(mcmd); 2433 2434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2435 } 2436 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2437 2438 /* No locks */ 2439 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2440 { 2441 struct qla_tgt_cmd *cmd = prm->cmd; 2442 2443 BUG_ON(cmd->sg_cnt == 0); 2444 2445 prm->sg = (struct scatterlist *)cmd->sg; 2446 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2447 cmd->sg_cnt, cmd->dma_data_direction); 2448 if (unlikely(prm->seg_cnt == 0)) 2449 goto out_err; 2450 2451 prm->cmd->sg_mapped = 1; 2452 2453 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2454 /* 2455 * If greater than four sg entries then we need to allocate 2456 * the continuation entries 2457 */ 2458 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2459 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2460 QLA_TGT_DATASEGS_PER_CMD_24XX, 2461 QLA_TGT_DATASEGS_PER_CONT_24XX); 2462 } else { 2463 /* DIF */ 2464 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2465 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2466 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2467 prm->tot_dsds = prm->seg_cnt; 2468 } else 2469 prm->tot_dsds = prm->seg_cnt; 2470 2471 if (cmd->prot_sg_cnt) { 2472 prm->prot_sg = cmd->prot_sg; 2473 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2474 cmd->prot_sg, cmd->prot_sg_cnt, 2475 cmd->dma_data_direction); 2476 if (unlikely(prm->prot_seg_cnt == 0)) 2477 goto out_err; 2478 2479 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2480 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2481 /* Dif Bundling not support here */ 2482 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2483 cmd->blk_sz); 2484 prm->tot_dsds += prm->prot_seg_cnt; 2485 } else 2486 prm->tot_dsds += prm->prot_seg_cnt; 2487 } 2488 } 2489 2490 return 0; 2491 2492 out_err: 2493 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2494 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2495 0, prm->cmd->sg_cnt); 2496 return -1; 2497 } 2498 2499 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2500 { 2501 struct qla_hw_data *ha; 2502 struct qla_qpair *qpair; 2503 2504 if (!cmd->sg_mapped) 2505 return; 2506 2507 qpair = cmd->qpair; 2508 2509 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2510 cmd->dma_data_direction); 2511 cmd->sg_mapped = 0; 2512 2513 if (cmd->prot_sg_cnt) 2514 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2515 cmd->dma_data_direction); 2516 2517 if (!cmd->ctx) 2518 return; 2519 ha = vha->hw; 2520 if (cmd->ctx_dsd_alloced) 2521 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2522 2523 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2524 } 2525 2526 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2527 uint32_t req_cnt) 2528 { 2529 uint32_t cnt; 2530 struct req_que *req = qpair->req; 2531 2532 if (req->cnt < (req_cnt + 2)) { 2533 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2534 rd_reg_dword_relaxed(req->req_q_out)); 2535 2536 if (req->ring_index < cnt) 2537 req->cnt = cnt - req->ring_index; 2538 else 2539 req->cnt = req->length - (req->ring_index - cnt); 2540 2541 if (unlikely(req->cnt < (req_cnt + 2))) 2542 return -EAGAIN; 2543 } 2544 2545 req->cnt -= req_cnt; 2546 2547 return 0; 2548 } 2549 2550 /* 2551 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2552 */ 2553 static inline void *qlt_get_req_pkt(struct req_que *req) 2554 { 2555 /* Adjust ring index. */ 2556 req->ring_index++; 2557 if (req->ring_index == req->length) { 2558 req->ring_index = 0; 2559 req->ring_ptr = req->ring; 2560 } else { 2561 req->ring_ptr++; 2562 } 2563 return (cont_entry_t *)req->ring_ptr; 2564 } 2565 2566 /* ha->hardware_lock supposed to be held on entry */ 2567 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2568 { 2569 uint32_t h; 2570 int index; 2571 uint8_t found = 0; 2572 struct req_que *req = qpair->req; 2573 2574 h = req->current_outstanding_cmd; 2575 2576 for (index = 1; index < req->num_outstanding_cmds; index++) { 2577 h++; 2578 if (h == req->num_outstanding_cmds) 2579 h = 1; 2580 2581 if (h == QLA_TGT_SKIP_HANDLE) 2582 continue; 2583 2584 if (!req->outstanding_cmds[h]) { 2585 found = 1; 2586 break; 2587 } 2588 } 2589 2590 if (found) { 2591 req->current_outstanding_cmd = h; 2592 } else { 2593 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2594 "qla_target(%d): Ran out of empty cmd slots\n", 2595 qpair->vha->vp_idx); 2596 h = QLA_TGT_NULL_HANDLE; 2597 } 2598 2599 return h; 2600 } 2601 2602 /* ha->hardware_lock supposed to be held on entry */ 2603 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2604 struct qla_tgt_prm *prm) 2605 { 2606 uint32_t h; 2607 struct ctio7_to_24xx *pkt; 2608 struct atio_from_isp *atio = &prm->cmd->atio; 2609 uint16_t temp; 2610 struct qla_tgt_cmd *cmd = prm->cmd; 2611 2612 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2613 prm->pkt = pkt; 2614 memset(pkt, 0, sizeof(*pkt)); 2615 2616 pkt->entry_type = CTIO_TYPE7; 2617 pkt->entry_count = (uint8_t)prm->req_cnt; 2618 pkt->vp_index = prm->cmd->vp_idx; 2619 2620 h = qlt_make_handle(qpair); 2621 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2622 /* 2623 * CTIO type 7 from the firmware doesn't provide a way to 2624 * know the initiator's LOOP ID, hence we can't find 2625 * the session and, so, the command. 2626 */ 2627 return -EAGAIN; 2628 } else 2629 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2630 2631 pkt->handle = make_handle(qpair->req->id, h); 2632 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2633 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2634 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2635 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2636 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2637 temp = atio->u.isp24.attr << 9; 2638 pkt->u.status0.flags |= cpu_to_le16(temp); 2639 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2640 pkt->u.status0.ox_id = cpu_to_le16(temp); 2641 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2642 2643 if (cmd->edif) { 2644 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2645 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2646 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2647 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2648 2649 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2650 } 2651 2652 return 0; 2653 } 2654 2655 /* 2656 * ha->hardware_lock supposed to be held on entry. We have already made sure 2657 * that there is sufficient amount of request entries to not drop it. 2658 */ 2659 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2660 { 2661 int cnt; 2662 struct dsd64 *cur_dsd; 2663 2664 /* Build continuation packets */ 2665 while (prm->seg_cnt > 0) { 2666 cont_a64_entry_t *cont_pkt64 = 2667 (cont_a64_entry_t *)qlt_get_req_pkt( 2668 prm->cmd->qpair->req); 2669 2670 /* 2671 * Make sure that from cont_pkt64 none of 2672 * 64-bit specific fields used for 32-bit 2673 * addressing. Cast to (cont_entry_t *) for 2674 * that. 2675 */ 2676 2677 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2678 2679 cont_pkt64->entry_count = 1; 2680 cont_pkt64->sys_define = 0; 2681 2682 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2683 cur_dsd = cont_pkt64->dsd; 2684 2685 /* Load continuation entry data segments */ 2686 for (cnt = 0; 2687 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2688 cnt++, prm->seg_cnt--) { 2689 append_dsd64(&cur_dsd, prm->sg); 2690 prm->sg = sg_next(prm->sg); 2691 } 2692 } 2693 } 2694 2695 /* 2696 * ha->hardware_lock supposed to be held on entry. We have already made sure 2697 * that there is sufficient amount of request entries to not drop it. 2698 */ 2699 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2700 { 2701 int cnt; 2702 struct dsd64 *cur_dsd; 2703 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2704 2705 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2706 2707 /* Setup packet address segment pointer */ 2708 cur_dsd = &pkt24->u.status0.dsd; 2709 2710 /* Set total data segment count */ 2711 if (prm->seg_cnt) 2712 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2713 2714 if (prm->seg_cnt == 0) { 2715 /* No data transfer */ 2716 cur_dsd->address = 0; 2717 cur_dsd->length = 0; 2718 return; 2719 } 2720 2721 /* If scatter gather */ 2722 2723 /* Load command entry data segments */ 2724 for (cnt = 0; 2725 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2726 cnt++, prm->seg_cnt--) { 2727 append_dsd64(&cur_dsd, prm->sg); 2728 prm->sg = sg_next(prm->sg); 2729 } 2730 2731 qlt_load_cont_data_segments(prm); 2732 } 2733 2734 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2735 { 2736 return cmd->bufflen > 0; 2737 } 2738 2739 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2740 { 2741 struct qla_tgt_cmd *cmd; 2742 struct scsi_qla_host *vha; 2743 2744 /* asc 0x10=dif error */ 2745 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2746 cmd = prm->cmd; 2747 vha = cmd->vha; 2748 /* ASCQ */ 2749 switch (prm->sense_buffer[13]) { 2750 case 1: 2751 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2752 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2753 "se_cmd=%p tag[%x]", 2754 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2755 cmd->atio.u.isp24.exchange_addr); 2756 break; 2757 case 2: 2758 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2759 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2760 "se_cmd=%p tag[%x]", 2761 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2762 cmd->atio.u.isp24.exchange_addr); 2763 break; 2764 case 3: 2765 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2766 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2767 "se_cmd=%p tag[%x]", 2768 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2769 cmd->atio.u.isp24.exchange_addr); 2770 break; 2771 default: 2772 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2773 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2774 "se_cmd=%p tag[%x]", 2775 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2776 cmd->atio.u.isp24.exchange_addr); 2777 break; 2778 } 2779 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2780 } 2781 } 2782 2783 /* 2784 * Called without ha->hardware_lock held 2785 */ 2786 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2787 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2788 uint32_t *full_req_cnt) 2789 { 2790 struct se_cmd *se_cmd = &cmd->se_cmd; 2791 struct qla_qpair *qpair = cmd->qpair; 2792 2793 prm->cmd = cmd; 2794 prm->tgt = cmd->tgt; 2795 prm->pkt = NULL; 2796 prm->rq_result = scsi_status; 2797 prm->sense_buffer = &cmd->sense_buffer[0]; 2798 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2799 prm->sg = NULL; 2800 prm->seg_cnt = -1; 2801 prm->req_cnt = 1; 2802 prm->residual = 0; 2803 prm->add_status_pkt = 0; 2804 prm->prot_sg = NULL; 2805 prm->prot_seg_cnt = 0; 2806 prm->tot_dsds = 0; 2807 2808 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2809 if (qlt_pci_map_calc_cnt(prm) != 0) 2810 return -EAGAIN; 2811 } 2812 2813 *full_req_cnt = prm->req_cnt; 2814 2815 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2816 prm->residual = se_cmd->residual_count; 2817 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2818 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2819 prm->residual, se_cmd->tag, 2820 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2821 cmd->bufflen, prm->rq_result); 2822 prm->rq_result |= SS_RESIDUAL_UNDER; 2823 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2824 prm->residual = se_cmd->residual_count; 2825 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2826 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2827 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2828 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2829 prm->rq_result |= SS_RESIDUAL_OVER; 2830 } 2831 2832 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2833 /* 2834 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2835 * ignored in *xmit_response() below 2836 */ 2837 if (qlt_has_data(cmd)) { 2838 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2839 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2840 (prm->rq_result != 0))) { 2841 prm->add_status_pkt = 1; 2842 (*full_req_cnt)++; 2843 } 2844 } 2845 } 2846 2847 return 0; 2848 } 2849 2850 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2851 int sending_sense) 2852 { 2853 if (cmd->qpair->enable_class_2) 2854 return 0; 2855 2856 if (sending_sense) 2857 return cmd->conf_compl_supported; 2858 else 2859 return cmd->qpair->enable_explicit_conf && 2860 cmd->conf_compl_supported; 2861 } 2862 2863 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2864 struct qla_tgt_prm *prm) 2865 { 2866 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2867 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2868 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2869 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2870 ctio->u.status0.flags |= cpu_to_le16( 2871 CTIO7_FLAGS_EXPLICIT_CONFORM | 2872 CTIO7_FLAGS_CONFORM_REQ); 2873 } 2874 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2875 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2876 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2877 int i; 2878 2879 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2880 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2881 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2882 "Skipping EXPLICIT_CONFORM and " 2883 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2884 "non GOOD status\n"); 2885 goto skip_explict_conf; 2886 } 2887 ctio->u.status1.flags |= cpu_to_le16( 2888 CTIO7_FLAGS_EXPLICIT_CONFORM | 2889 CTIO7_FLAGS_CONFORM_REQ); 2890 } 2891 skip_explict_conf: 2892 ctio->u.status1.flags &= 2893 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2894 ctio->u.status1.flags |= 2895 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2896 ctio->u.status1.scsi_status |= 2897 cpu_to_le16(SS_SENSE_LEN_VALID); 2898 ctio->u.status1.sense_length = 2899 cpu_to_le16(prm->sense_buffer_len); 2900 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2901 uint32_t v; 2902 2903 v = get_unaligned_be32( 2904 &((uint32_t *)prm->sense_buffer)[i]); 2905 put_unaligned_le32(v, 2906 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2907 } 2908 qlt_print_dif_err(prm); 2909 2910 } else { 2911 ctio->u.status1.flags &= 2912 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2913 ctio->u.status1.flags |= 2914 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2915 ctio->u.status1.sense_length = 0; 2916 memset(ctio->u.status1.sense_data, 0, 2917 sizeof(ctio->u.status1.sense_data)); 2918 } 2919 2920 /* Sense with len > 24, is it possible ??? */ 2921 } 2922 2923 static inline int 2924 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2925 { 2926 switch (se_cmd->prot_op) { 2927 case TARGET_PROT_DOUT_INSERT: 2928 case TARGET_PROT_DIN_STRIP: 2929 if (ql2xenablehba_err_chk >= 1) 2930 return 1; 2931 break; 2932 case TARGET_PROT_DOUT_PASS: 2933 case TARGET_PROT_DIN_PASS: 2934 if (ql2xenablehba_err_chk >= 2) 2935 return 1; 2936 break; 2937 case TARGET_PROT_DIN_INSERT: 2938 case TARGET_PROT_DOUT_STRIP: 2939 return 1; 2940 default: 2941 break; 2942 } 2943 return 0; 2944 } 2945 2946 static inline int 2947 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2948 { 2949 switch (se_cmd->prot_op) { 2950 case TARGET_PROT_DIN_INSERT: 2951 case TARGET_PROT_DOUT_INSERT: 2952 case TARGET_PROT_DIN_STRIP: 2953 case TARGET_PROT_DOUT_STRIP: 2954 case TARGET_PROT_DIN_PASS: 2955 case TARGET_PROT_DOUT_PASS: 2956 return 1; 2957 default: 2958 return 0; 2959 } 2960 return 0; 2961 } 2962 2963 /* 2964 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2965 */ 2966 static void 2967 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2968 uint16_t *pfw_prot_opts) 2969 { 2970 struct se_cmd *se_cmd = &cmd->se_cmd; 2971 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2972 scsi_qla_host_t *vha = cmd->tgt->vha; 2973 struct qla_hw_data *ha = vha->hw; 2974 uint32_t t32 = 0; 2975 2976 /* 2977 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2978 * have been immplemented by TCM, before AppTag is avail. 2979 * Look for modesense_handlers[] 2980 */ 2981 ctx->app_tag = 0; 2982 ctx->app_tag_mask[0] = 0x0; 2983 ctx->app_tag_mask[1] = 0x0; 2984 2985 if (IS_PI_UNINIT_CAPABLE(ha)) { 2986 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2987 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2988 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2989 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2990 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2991 } 2992 2993 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2994 2995 switch (se_cmd->prot_type) { 2996 case TARGET_DIF_TYPE0_PROT: 2997 /* 2998 * No check for ql2xenablehba_err_chk, as it 2999 * would be an I/O error if hba tag generation 3000 * is not done. 3001 */ 3002 ctx->ref_tag = cpu_to_le32(lba); 3003 /* enable ALL bytes of the ref tag */ 3004 ctx->ref_tag_mask[0] = 0xff; 3005 ctx->ref_tag_mask[1] = 0xff; 3006 ctx->ref_tag_mask[2] = 0xff; 3007 ctx->ref_tag_mask[3] = 0xff; 3008 break; 3009 case TARGET_DIF_TYPE1_PROT: 3010 /* 3011 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3012 * REF tag, and 16 bit app tag. 3013 */ 3014 ctx->ref_tag = cpu_to_le32(lba); 3015 if (!qla_tgt_ref_mask_check(se_cmd) || 3016 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3017 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3018 break; 3019 } 3020 /* enable ALL bytes of the ref tag */ 3021 ctx->ref_tag_mask[0] = 0xff; 3022 ctx->ref_tag_mask[1] = 0xff; 3023 ctx->ref_tag_mask[2] = 0xff; 3024 ctx->ref_tag_mask[3] = 0xff; 3025 break; 3026 case TARGET_DIF_TYPE2_PROT: 3027 /* 3028 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3029 * tag has to match LBA in CDB + N 3030 */ 3031 ctx->ref_tag = cpu_to_le32(lba); 3032 if (!qla_tgt_ref_mask_check(se_cmd) || 3033 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3034 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3035 break; 3036 } 3037 /* enable ALL bytes of the ref tag */ 3038 ctx->ref_tag_mask[0] = 0xff; 3039 ctx->ref_tag_mask[1] = 0xff; 3040 ctx->ref_tag_mask[2] = 0xff; 3041 ctx->ref_tag_mask[3] = 0xff; 3042 break; 3043 case TARGET_DIF_TYPE3_PROT: 3044 /* For TYPE 3 protection: 16 bit GUARD only */ 3045 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3046 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3047 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3048 break; 3049 } 3050 } 3051 3052 static inline int 3053 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3054 { 3055 struct dsd64 *cur_dsd; 3056 uint32_t transfer_length = 0; 3057 uint32_t data_bytes; 3058 uint32_t dif_bytes; 3059 uint8_t bundling = 1; 3060 struct crc_context *crc_ctx_pkt = NULL; 3061 struct qla_hw_data *ha; 3062 struct ctio_crc2_to_fw *pkt; 3063 dma_addr_t crc_ctx_dma; 3064 uint16_t fw_prot_opts = 0; 3065 struct qla_tgt_cmd *cmd = prm->cmd; 3066 struct se_cmd *se_cmd = &cmd->se_cmd; 3067 uint32_t h; 3068 struct atio_from_isp *atio = &prm->cmd->atio; 3069 struct qla_tc_param tc; 3070 uint16_t t16; 3071 scsi_qla_host_t *vha = cmd->vha; 3072 3073 ha = vha->hw; 3074 3075 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3076 prm->pkt = pkt; 3077 memset(pkt, 0, sizeof(*pkt)); 3078 3079 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3080 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3081 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3082 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3083 3084 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3085 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3086 bundling = 0; 3087 3088 /* Compute dif len and adjust data len to incude protection */ 3089 data_bytes = cmd->bufflen; 3090 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3091 3092 switch (se_cmd->prot_op) { 3093 case TARGET_PROT_DIN_INSERT: 3094 case TARGET_PROT_DOUT_STRIP: 3095 transfer_length = data_bytes; 3096 if (cmd->prot_sg_cnt) 3097 data_bytes += dif_bytes; 3098 break; 3099 case TARGET_PROT_DIN_STRIP: 3100 case TARGET_PROT_DOUT_INSERT: 3101 case TARGET_PROT_DIN_PASS: 3102 case TARGET_PROT_DOUT_PASS: 3103 transfer_length = data_bytes + dif_bytes; 3104 break; 3105 default: 3106 BUG(); 3107 break; 3108 } 3109 3110 if (!qlt_hba_err_chk_enabled(se_cmd)) 3111 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3112 /* HBA error checking enabled */ 3113 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3114 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3115 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3116 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3117 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3118 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3119 } 3120 3121 switch (se_cmd->prot_op) { 3122 case TARGET_PROT_DIN_INSERT: 3123 case TARGET_PROT_DOUT_INSERT: 3124 fw_prot_opts |= PO_MODE_DIF_INSERT; 3125 break; 3126 case TARGET_PROT_DIN_STRIP: 3127 case TARGET_PROT_DOUT_STRIP: 3128 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3129 break; 3130 case TARGET_PROT_DIN_PASS: 3131 case TARGET_PROT_DOUT_PASS: 3132 fw_prot_opts |= PO_MODE_DIF_PASS; 3133 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3134 break; 3135 default:/* Normal Request */ 3136 fw_prot_opts |= PO_MODE_DIF_PASS; 3137 break; 3138 } 3139 3140 /* ---- PKT ---- */ 3141 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3142 pkt->entry_type = CTIO_CRC2; 3143 pkt->entry_count = 1; 3144 pkt->vp_index = cmd->vp_idx; 3145 3146 h = qlt_make_handle(qpair); 3147 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3148 /* 3149 * CTIO type 7 from the firmware doesn't provide a way to 3150 * know the initiator's LOOP ID, hence we can't find 3151 * the session and, so, the command. 3152 */ 3153 return -EAGAIN; 3154 } else 3155 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3156 3157 pkt->handle = make_handle(qpair->req->id, h); 3158 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3159 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3160 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3161 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3162 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3163 3164 /* silence compile warning */ 3165 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3166 pkt->ox_id = cpu_to_le16(t16); 3167 3168 t16 = (atio->u.isp24.attr << 9); 3169 pkt->flags |= cpu_to_le16(t16); 3170 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3171 3172 /* Set transfer direction */ 3173 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3174 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3175 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3176 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3177 3178 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3179 /* Fibre channel byte count */ 3180 pkt->transfer_length = cpu_to_le32(transfer_length); 3181 3182 /* ----- CRC context -------- */ 3183 3184 /* Allocate CRC context from global pool */ 3185 crc_ctx_pkt = cmd->ctx = 3186 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3187 3188 if (!crc_ctx_pkt) 3189 goto crc_queuing_error; 3190 3191 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3192 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3193 3194 /* Set handle */ 3195 crc_ctx_pkt->handle = pkt->handle; 3196 3197 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3198 3199 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3200 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3201 3202 if (!bundling) { 3203 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3204 } else { 3205 /* 3206 * Configure Bundling if we need to fetch interlaving 3207 * protection PCI accesses 3208 */ 3209 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3210 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3211 crc_ctx_pkt->u.bundling.dseg_count = 3212 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3213 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3214 } 3215 3216 /* Finish the common fields of CRC pkt */ 3217 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3218 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3219 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3220 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3221 3222 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3223 tc.vha = vha; 3224 tc.blk_sz = cmd->blk_sz; 3225 tc.bufflen = cmd->bufflen; 3226 tc.sg = cmd->sg; 3227 tc.prot_sg = cmd->prot_sg; 3228 tc.ctx = crc_ctx_pkt; 3229 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3230 3231 /* Walks data segments */ 3232 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3233 3234 if (!bundling && prm->prot_seg_cnt) { 3235 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3236 prm->tot_dsds, &tc)) 3237 goto crc_queuing_error; 3238 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3239 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3240 goto crc_queuing_error; 3241 3242 if (bundling && prm->prot_seg_cnt) { 3243 /* Walks dif segments */ 3244 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3245 3246 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3247 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3248 prm->prot_seg_cnt, cmd)) 3249 goto crc_queuing_error; 3250 } 3251 return QLA_SUCCESS; 3252 3253 crc_queuing_error: 3254 /* Cleanup will be performed by the caller */ 3255 qpair->req->outstanding_cmds[h] = NULL; 3256 3257 return QLA_FUNCTION_FAILED; 3258 } 3259 3260 /* 3261 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3262 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3263 */ 3264 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3265 uint8_t scsi_status) 3266 { 3267 struct scsi_qla_host *vha = cmd->vha; 3268 struct qla_qpair *qpair = cmd->qpair; 3269 struct ctio7_to_24xx *pkt; 3270 struct qla_tgt_prm prm; 3271 uint32_t full_req_cnt = 0; 3272 unsigned long flags = 0; 3273 int res; 3274 3275 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3276 (cmd->sess && cmd->sess->deleted)) { 3277 cmd->state = QLA_TGT_STATE_PROCESSED; 3278 return 0; 3279 } 3280 3281 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3282 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3283 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3284 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3285 &cmd->se_cmd, qpair->id); 3286 3287 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3288 &full_req_cnt); 3289 if (unlikely(res != 0)) { 3290 return res; 3291 } 3292 3293 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3294 3295 if (xmit_type == QLA_TGT_XMIT_STATUS) 3296 qpair->tgt_counters.core_qla_snd_status++; 3297 else 3298 qpair->tgt_counters.core_qla_que_buf++; 3299 3300 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3301 /* 3302 * Either the port is not online or this request was from 3303 * previous life, just abort the processing. 3304 */ 3305 cmd->state = QLA_TGT_STATE_PROCESSED; 3306 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3307 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3308 vha->flags.online, qla2x00_reset_active(vha), 3309 cmd->reset_count, qpair->chip_reset); 3310 res = 0; 3311 goto out_unmap_unlock; 3312 } 3313 3314 /* Does F/W have an IOCBs for this request */ 3315 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3316 if (unlikely(res)) 3317 goto out_unmap_unlock; 3318 3319 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3320 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3321 else 3322 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3323 if (unlikely(res != 0)) { 3324 qpair->req->cnt += full_req_cnt; 3325 goto out_unmap_unlock; 3326 } 3327 3328 pkt = (struct ctio7_to_24xx *)prm.pkt; 3329 3330 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3331 pkt->u.status0.flags |= 3332 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3333 CTIO7_FLAGS_STATUS_MODE_0); 3334 3335 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3336 qlt_load_data_segments(&prm); 3337 3338 if (prm.add_status_pkt == 0) { 3339 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3340 pkt->u.status0.scsi_status = 3341 cpu_to_le16(prm.rq_result); 3342 if (!cmd->edif) 3343 pkt->u.status0.residual = 3344 cpu_to_le32(prm.residual); 3345 3346 pkt->u.status0.flags |= cpu_to_le16( 3347 CTIO7_FLAGS_SEND_STATUS); 3348 if (qlt_need_explicit_conf(cmd, 0)) { 3349 pkt->u.status0.flags |= 3350 cpu_to_le16( 3351 CTIO7_FLAGS_EXPLICIT_CONFORM | 3352 CTIO7_FLAGS_CONFORM_REQ); 3353 } 3354 } 3355 3356 } else { 3357 /* 3358 * We have already made sure that there is sufficient 3359 * amount of request entries to not drop HW lock in 3360 * req_pkt(). 3361 */ 3362 struct ctio7_to_24xx *ctio = 3363 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3364 qpair->req); 3365 3366 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3367 "Building additional status packet 0x%p.\n", 3368 ctio); 3369 3370 /* 3371 * T10Dif: ctio_crc2_to_fw overlay ontop of 3372 * ctio7_to_24xx 3373 */ 3374 memcpy(ctio, pkt, sizeof(*ctio)); 3375 /* reset back to CTIO7 */ 3376 ctio->entry_count = 1; 3377 ctio->entry_type = CTIO_TYPE7; 3378 ctio->dseg_count = 0; 3379 ctio->u.status1.flags &= ~cpu_to_le16( 3380 CTIO7_FLAGS_DATA_IN); 3381 3382 /* Real finish is ctio_m1's finish */ 3383 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3384 pkt->u.status0.flags |= cpu_to_le16( 3385 CTIO7_FLAGS_DONT_RET_CTIO); 3386 3387 /* qlt_24xx_init_ctio_to_isp will correct 3388 * all neccessary fields that's part of CTIO7. 3389 * There should be no residual of CTIO-CRC2 data. 3390 */ 3391 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3392 &prm); 3393 } 3394 } else 3395 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3396 3397 3398 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3399 cmd->cmd_sent_to_fw = 1; 3400 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3401 3402 /* Memory Barrier */ 3403 wmb(); 3404 if (qpair->reqq_start_iocbs) 3405 qpair->reqq_start_iocbs(qpair); 3406 else 3407 qla2x00_start_iocbs(vha, qpair->req); 3408 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3409 3410 return 0; 3411 3412 out_unmap_unlock: 3413 qlt_unmap_sg(vha, cmd); 3414 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3415 3416 return res; 3417 } 3418 EXPORT_SYMBOL(qlt_xmit_response); 3419 3420 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3421 { 3422 struct ctio7_to_24xx *pkt; 3423 struct scsi_qla_host *vha = cmd->vha; 3424 struct qla_tgt *tgt = cmd->tgt; 3425 struct qla_tgt_prm prm; 3426 unsigned long flags = 0; 3427 int res = 0; 3428 struct qla_qpair *qpair = cmd->qpair; 3429 3430 memset(&prm, 0, sizeof(prm)); 3431 prm.cmd = cmd; 3432 prm.tgt = tgt; 3433 prm.sg = NULL; 3434 prm.req_cnt = 1; 3435 3436 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3437 (cmd->sess && cmd->sess->deleted)) { 3438 /* 3439 * Either the port is not online or this request was from 3440 * previous life, just abort the processing. 3441 */ 3442 cmd->aborted = 1; 3443 cmd->write_data_transferred = 0; 3444 cmd->state = QLA_TGT_STATE_DATA_IN; 3445 vha->hw->tgt.tgt_ops->handle_data(cmd); 3446 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3447 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3448 vha->flags.online, qla2x00_reset_active(vha), 3449 cmd->reset_count, qpair->chip_reset); 3450 return 0; 3451 } 3452 3453 /* Calculate number of entries and segments required */ 3454 if (qlt_pci_map_calc_cnt(&prm) != 0) 3455 return -EAGAIN; 3456 3457 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3458 /* Does F/W have an IOCBs for this request */ 3459 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3460 if (res != 0) 3461 goto out_unlock_free_unmap; 3462 if (cmd->se_cmd.prot_op) 3463 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3464 else 3465 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3466 3467 if (unlikely(res != 0)) { 3468 qpair->req->cnt += prm.req_cnt; 3469 goto out_unlock_free_unmap; 3470 } 3471 3472 pkt = (struct ctio7_to_24xx *)prm.pkt; 3473 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3474 CTIO7_FLAGS_STATUS_MODE_0); 3475 3476 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3477 qlt_load_data_segments(&prm); 3478 3479 cmd->state = QLA_TGT_STATE_NEED_DATA; 3480 cmd->cmd_sent_to_fw = 1; 3481 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3482 3483 /* Memory Barrier */ 3484 wmb(); 3485 if (qpair->reqq_start_iocbs) 3486 qpair->reqq_start_iocbs(qpair); 3487 else 3488 qla2x00_start_iocbs(vha, qpair->req); 3489 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3490 3491 return res; 3492 3493 out_unlock_free_unmap: 3494 qlt_unmap_sg(vha, cmd); 3495 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3496 3497 return res; 3498 } 3499 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3500 3501 3502 /* 3503 * it is assumed either hardware_lock or qpair lock is held. 3504 */ 3505 static void 3506 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3507 struct ctio_crc_from_fw *sts) 3508 { 3509 uint8_t *ap = &sts->actual_dif[0]; 3510 uint8_t *ep = &sts->expected_dif[0]; 3511 uint64_t lba = cmd->se_cmd.t_task_lba; 3512 uint8_t scsi_status, sense_key, asc, ascq; 3513 unsigned long flags; 3514 struct scsi_qla_host *vha = cmd->vha; 3515 3516 cmd->trc_flags |= TRC_DIF_ERR; 3517 3518 cmd->a_guard = get_unaligned_be16(ap + 0); 3519 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3520 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3521 3522 cmd->e_guard = get_unaligned_be16(ep + 0); 3523 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3524 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3525 3526 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3527 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3528 3529 scsi_status = sense_key = asc = ascq = 0; 3530 3531 /* check appl tag */ 3532 if (cmd->e_app_tag != cmd->a_app_tag) { 3533 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3534 "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]", 3535 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3536 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3537 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3538 cmd->atio.u.isp24.fcp_hdr.ox_id); 3539 3540 cmd->dif_err_code = DIF_ERR_APP; 3541 scsi_status = SAM_STAT_CHECK_CONDITION; 3542 sense_key = ABORTED_COMMAND; 3543 asc = 0x10; 3544 ascq = 0x2; 3545 } 3546 3547 /* check ref tag */ 3548 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3549 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3550 "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] ", 3551 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3552 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3553 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3554 cmd->atio.u.isp24.fcp_hdr.ox_id); 3555 3556 cmd->dif_err_code = DIF_ERR_REF; 3557 scsi_status = SAM_STAT_CHECK_CONDITION; 3558 sense_key = ABORTED_COMMAND; 3559 asc = 0x10; 3560 ascq = 0x3; 3561 goto out; 3562 } 3563 3564 /* check guard */ 3565 if (cmd->e_guard != cmd->a_guard) { 3566 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3567 "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]", 3568 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3569 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3570 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3571 cmd->atio.u.isp24.fcp_hdr.ox_id); 3572 3573 cmd->dif_err_code = DIF_ERR_GRD; 3574 scsi_status = SAM_STAT_CHECK_CONDITION; 3575 sense_key = ABORTED_COMMAND; 3576 asc = 0x10; 3577 ascq = 0x1; 3578 } 3579 out: 3580 switch (cmd->state) { 3581 case QLA_TGT_STATE_NEED_DATA: 3582 /* handle_data will load DIF error code */ 3583 cmd->state = QLA_TGT_STATE_DATA_IN; 3584 vha->hw->tgt.tgt_ops->handle_data(cmd); 3585 break; 3586 default: 3587 spin_lock_irqsave(&cmd->cmd_lock, flags); 3588 if (cmd->aborted) { 3589 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3590 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3591 break; 3592 } 3593 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3594 3595 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3596 ascq); 3597 /* assume scsi status gets out on the wire. 3598 * Will not wait for completion. 3599 */ 3600 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3601 break; 3602 } 3603 } 3604 3605 /* If hardware_lock held on entry, might drop it, then reaquire */ 3606 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3607 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3608 struct imm_ntfy_from_isp *ntfy) 3609 { 3610 struct nack_to_isp *nack; 3611 struct qla_hw_data *ha = vha->hw; 3612 request_t *pkt; 3613 int ret = 0; 3614 3615 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3616 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3617 3618 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3619 if (pkt == NULL) { 3620 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3621 "qla_target(%d): %s failed: unable to allocate " 3622 "request packet\n", vha->vp_idx, __func__); 3623 return -ENOMEM; 3624 } 3625 3626 pkt->entry_type = NOTIFY_ACK_TYPE; 3627 pkt->entry_count = 1; 3628 pkt->handle = QLA_TGT_SKIP_HANDLE; 3629 3630 nack = (struct nack_to_isp *)pkt; 3631 nack->ox_id = ntfy->ox_id; 3632 3633 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3634 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3635 nack->u.isp24.flags = ntfy->u.isp24.flags & 3636 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3637 } 3638 3639 /* terminate */ 3640 nack->u.isp24.flags |= 3641 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3642 3643 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3644 nack->u.isp24.status = ntfy->u.isp24.status; 3645 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3646 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3647 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3648 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3649 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3650 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3651 3652 qla2x00_start_iocbs(vha, vha->req); 3653 return ret; 3654 } 3655 3656 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3657 struct imm_ntfy_from_isp *imm, int ha_locked) 3658 { 3659 int rc; 3660 3661 WARN_ON_ONCE(!ha_locked); 3662 rc = __qlt_send_term_imm_notif(vha, imm); 3663 pr_debug("rc = %d\n", rc); 3664 } 3665 3666 /* 3667 * If hardware_lock held on entry, might drop it, then reaquire 3668 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3669 */ 3670 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3671 struct qla_tgt_cmd *cmd, 3672 struct atio_from_isp *atio) 3673 { 3674 struct scsi_qla_host *vha = qpair->vha; 3675 struct ctio7_to_24xx *ctio24; 3676 struct qla_hw_data *ha = vha->hw; 3677 request_t *pkt; 3678 int ret = 0; 3679 uint16_t temp; 3680 3681 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3682 3683 if (cmd) 3684 vha = cmd->vha; 3685 3686 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3687 if (pkt == NULL) { 3688 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3689 "qla_target(%d): %s failed: unable to allocate " 3690 "request packet\n", vha->vp_idx, __func__); 3691 return -ENOMEM; 3692 } 3693 3694 if (cmd != NULL) { 3695 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3696 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3697 "qla_target(%d): Terminating cmd %p with " 3698 "incorrect state %d\n", vha->vp_idx, cmd, 3699 cmd->state); 3700 } else 3701 ret = 1; 3702 } 3703 3704 qpair->tgt_counters.num_term_xchg_sent++; 3705 pkt->entry_count = 1; 3706 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3707 3708 ctio24 = (struct ctio7_to_24xx *)pkt; 3709 ctio24->entry_type = CTIO_TYPE7; 3710 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3711 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3712 ctio24->vp_index = vha->vp_idx; 3713 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3714 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3715 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3716 CTIO7_FLAGS_TERMINATE; 3717 ctio24->u.status1.flags = cpu_to_le16(temp); 3718 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3719 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3720 3721 /* Memory Barrier */ 3722 wmb(); 3723 if (qpair->reqq_start_iocbs) 3724 qpair->reqq_start_iocbs(qpair); 3725 else 3726 qla2x00_start_iocbs(vha, qpair->req); 3727 return ret; 3728 } 3729 3730 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3731 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3732 int ul_abort) 3733 { 3734 struct scsi_qla_host *vha; 3735 unsigned long flags = 0; 3736 int rc; 3737 3738 /* why use different vha? NPIV */ 3739 if (cmd) 3740 vha = cmd->vha; 3741 else 3742 vha = qpair->vha; 3743 3744 if (ha_locked) { 3745 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3746 if (rc == -ENOMEM) 3747 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3748 goto done; 3749 } 3750 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3751 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3752 if (rc == -ENOMEM) 3753 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3754 3755 done: 3756 if (cmd && !ul_abort && !cmd->aborted) { 3757 if (cmd->sg_mapped) 3758 qlt_unmap_sg(vha, cmd); 3759 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3760 } 3761 3762 if (!ha_locked) 3763 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3764 3765 return; 3766 } 3767 3768 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3769 { 3770 struct list_head free_list; 3771 struct qla_tgt_cmd *cmd, *tcmd; 3772 3773 vha->hw->tgt.leak_exchg_thresh_hold = 3774 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3775 3776 cmd = tcmd = NULL; 3777 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3778 INIT_LIST_HEAD(&free_list); 3779 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3780 3781 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3782 list_del(&cmd->cmd_list); 3783 /* This cmd was never sent to TCM. There is no need 3784 * to schedule free or call free_cmd 3785 */ 3786 qlt_free_cmd(cmd); 3787 vha->hw->tgt.num_qfull_cmds_alloc--; 3788 } 3789 } 3790 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3791 } 3792 3793 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3794 { 3795 uint32_t total_leaked; 3796 3797 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3798 3799 if (vha->hw->tgt.leak_exchg_thresh_hold && 3800 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3801 3802 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3803 "Chip reset due to exchange starvation: %d/%d.\n", 3804 total_leaked, vha->hw->cur_fw_xcb_count); 3805 3806 if (IS_P3P_TYPE(vha->hw)) 3807 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3808 else 3809 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3810 qla2xxx_wake_dpc(vha); 3811 } 3812 3813 } 3814 3815 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3816 { 3817 struct qla_tgt *tgt = cmd->tgt; 3818 struct scsi_qla_host *vha = tgt->vha; 3819 struct se_cmd *se_cmd = &cmd->se_cmd; 3820 unsigned long flags; 3821 3822 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3823 "qla_target(%d): terminating exchange for aborted cmd=%p " 3824 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3825 se_cmd->tag); 3826 3827 spin_lock_irqsave(&cmd->cmd_lock, flags); 3828 if (cmd->aborted) { 3829 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3830 /* 3831 * It's normal to see 2 calls in this path: 3832 * 1) XFER Rdy completion + CMD_T_ABORT 3833 * 2) TCM TMR - drain_state_list 3834 */ 3835 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3836 "multiple abort. %p transport_state %x, t_state %x, " 3837 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3838 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3839 return -EIO; 3840 } 3841 cmd->aborted = 1; 3842 cmd->trc_flags |= TRC_ABORT; 3843 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3844 3845 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3846 return 0; 3847 } 3848 EXPORT_SYMBOL(qlt_abort_cmd); 3849 3850 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3851 { 3852 struct fc_port *sess = cmd->sess; 3853 3854 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3855 "%s: se_cmd[%p] ox_id %04x\n", 3856 __func__, &cmd->se_cmd, 3857 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3858 3859 BUG_ON(cmd->cmd_in_wq); 3860 3861 if (!cmd->q_full) 3862 qlt_decr_num_pend_cmds(cmd->vha); 3863 3864 BUG_ON(cmd->sg_mapped); 3865 cmd->jiffies_at_free = get_jiffies_64(); 3866 if (unlikely(cmd->free_sg)) 3867 kfree(cmd->sg); 3868 3869 if (!sess || !sess->se_sess) { 3870 WARN_ON(1); 3871 return; 3872 } 3873 cmd->jiffies_at_free = get_jiffies_64(); 3874 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3875 } 3876 EXPORT_SYMBOL(qlt_free_cmd); 3877 3878 /* 3879 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3880 */ 3881 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3882 struct qla_tgt_cmd *cmd, uint32_t status) 3883 { 3884 int term = 0; 3885 struct scsi_qla_host *vha = qpair->vha; 3886 3887 if (cmd->se_cmd.prot_op) 3888 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3889 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3890 "se_cmd=%p tag[%x] op %#x/%s", 3891 cmd->lba, cmd->lba, 3892 cmd->num_blks, &cmd->se_cmd, 3893 cmd->atio.u.isp24.exchange_addr, 3894 cmd->se_cmd.prot_op, 3895 prot_op_str(cmd->se_cmd.prot_op)); 3896 3897 if (ctio != NULL) { 3898 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3899 3900 term = !(c->flags & 3901 cpu_to_le16(OF_TERM_EXCH)); 3902 } else 3903 term = 1; 3904 3905 if (term) 3906 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3907 3908 return term; 3909 } 3910 3911 3912 /* ha->hardware_lock supposed to be held on entry */ 3913 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3914 struct rsp_que *rsp, uint32_t handle, void *ctio) 3915 { 3916 void *cmd = NULL; 3917 struct req_que *req; 3918 int qid = GET_QID(handle); 3919 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3920 3921 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3922 return NULL; 3923 3924 if (qid == rsp->req->id) { 3925 req = rsp->req; 3926 } else if (vha->hw->req_q_map[qid]) { 3927 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3928 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3929 vha->vp_idx, rsp->id, handle); 3930 req = vha->hw->req_q_map[qid]; 3931 } else { 3932 return NULL; 3933 } 3934 3935 h &= QLA_CMD_HANDLE_MASK; 3936 3937 if (h != QLA_TGT_NULL_HANDLE) { 3938 if (unlikely(h >= req->num_outstanding_cmds)) { 3939 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3940 "qla_target(%d): Wrong handle %x received\n", 3941 vha->vp_idx, handle); 3942 return NULL; 3943 } 3944 3945 cmd = req->outstanding_cmds[h]; 3946 if (unlikely(cmd == NULL)) { 3947 ql_dbg(ql_dbg_async, vha, 0xe053, 3948 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3949 vha->vp_idx, handle, req->id, rsp->id); 3950 return NULL; 3951 } 3952 req->outstanding_cmds[h] = NULL; 3953 } else if (ctio != NULL) { 3954 /* We can't get loop ID from CTIO7 */ 3955 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3956 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3957 "support NULL handles\n", vha->vp_idx); 3958 return NULL; 3959 } 3960 3961 return cmd; 3962 } 3963 3964 /* 3965 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3966 */ 3967 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3968 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3969 { 3970 struct qla_hw_data *ha = vha->hw; 3971 struct se_cmd *se_cmd; 3972 struct qla_tgt_cmd *cmd; 3973 struct qla_qpair *qpair = rsp->qpair; 3974 3975 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3976 /* That could happen only in case of an error/reset/abort */ 3977 if (status != CTIO_SUCCESS) { 3978 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3979 "Intermediate CTIO received" 3980 " (status %x)\n", status); 3981 } 3982 return; 3983 } 3984 3985 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3986 if (cmd == NULL) 3987 return; 3988 3989 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 3990 cmd->sess) { 3991 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 3992 (struct ctio7_from_24xx *)ctio); 3993 } 3994 3995 se_cmd = &cmd->se_cmd; 3996 cmd->cmd_sent_to_fw = 0; 3997 3998 qlt_unmap_sg(vha, cmd); 3999 4000 if (unlikely(status != CTIO_SUCCESS)) { 4001 switch (status & 0xFFFF) { 4002 case CTIO_INVALID_RX_ID: 4003 if (printk_ratelimit()) 4004 dev_info(&vha->hw->pdev->dev, 4005 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4006 vha->vp_idx, cmd->atio.u.isp24.attr, 4007 ((cmd->ctio_flags >> 9) & 0xf), 4008 cmd->ctio_flags); 4009 4010 break; 4011 case CTIO_LIP_RESET: 4012 case CTIO_TARGET_RESET: 4013 case CTIO_ABORTED: 4014 /* driver request abort via Terminate exchange */ 4015 case CTIO_TIMEOUT: 4016 /* They are OK */ 4017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4018 "qla_target(%d): CTIO with " 4019 "status %#x received, state %x, se_cmd %p, " 4020 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4021 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4022 status, cmd->state, se_cmd); 4023 break; 4024 4025 case CTIO_PORT_LOGGED_OUT: 4026 case CTIO_PORT_UNAVAILABLE: 4027 { 4028 int logged_out = 4029 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4030 4031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4032 "qla_target(%d): CTIO with %s status %x " 4033 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4034 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4035 status, cmd->state, se_cmd); 4036 4037 if (logged_out && cmd->sess) { 4038 /* 4039 * Session is already logged out, but we need 4040 * to notify initiator, who's not aware of this 4041 */ 4042 cmd->sess->send_els_logo = 1; 4043 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4044 "%s %d %8phC post del sess\n", 4045 __func__, __LINE__, cmd->sess->port_name); 4046 4047 qlt_schedule_sess_for_deletion(cmd->sess); 4048 } 4049 break; 4050 } 4051 case CTIO_DIF_ERROR: { 4052 struct ctio_crc_from_fw *crc = 4053 (struct ctio_crc_from_fw *)ctio; 4054 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4055 "qla_target(%d): CTIO with DIF_ERROR status %x " 4056 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4057 "expect_dif[0x%llx]\n", 4058 vha->vp_idx, status, cmd->state, se_cmd, 4059 *((u64 *)&crc->actual_dif[0]), 4060 *((u64 *)&crc->expected_dif[0])); 4061 4062 qlt_handle_dif_error(qpair, cmd, ctio); 4063 return; 4064 } 4065 4066 case CTIO_FAST_AUTH_ERR: 4067 case CTIO_FAST_INCOMP_PAD_LEN: 4068 case CTIO_FAST_INVALID_REQ: 4069 case CTIO_FAST_SPI_ERR: 4070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4071 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4072 vha->vp_idx, status, cmd->state, se_cmd); 4073 break; 4074 4075 default: 4076 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4077 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4078 vha->vp_idx, status, cmd->state, se_cmd); 4079 break; 4080 } 4081 4082 4083 /* "cmd->aborted" means 4084 * cmd is already aborted/terminated, we don't 4085 * need to terminate again. The exchange is already 4086 * cleaned up/freed at FW level. Just cleanup at driver 4087 * level. 4088 */ 4089 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4090 (!cmd->aborted)) { 4091 cmd->trc_flags |= TRC_CTIO_ERR; 4092 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4093 return; 4094 } 4095 } 4096 4097 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4098 cmd->trc_flags |= TRC_CTIO_DONE; 4099 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4100 cmd->state = QLA_TGT_STATE_DATA_IN; 4101 4102 if (status == CTIO_SUCCESS) 4103 cmd->write_data_transferred = 1; 4104 4105 ha->tgt.tgt_ops->handle_data(cmd); 4106 return; 4107 } else if (cmd->aborted) { 4108 cmd->trc_flags |= TRC_CTIO_ABORTED; 4109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4110 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4111 } else { 4112 cmd->trc_flags |= TRC_CTIO_STRANGE; 4113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4114 "qla_target(%d): A command in state (%d) should " 4115 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4116 } 4117 4118 if (unlikely(status != CTIO_SUCCESS) && 4119 !cmd->aborted) { 4120 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4121 dump_stack(); 4122 } 4123 4124 ha->tgt.tgt_ops->free_cmd(cmd); 4125 } 4126 4127 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4128 uint8_t task_codes) 4129 { 4130 int fcp_task_attr; 4131 4132 switch (task_codes) { 4133 case ATIO_SIMPLE_QUEUE: 4134 fcp_task_attr = TCM_SIMPLE_TAG; 4135 break; 4136 case ATIO_HEAD_OF_QUEUE: 4137 fcp_task_attr = TCM_HEAD_TAG; 4138 break; 4139 case ATIO_ORDERED_QUEUE: 4140 fcp_task_attr = TCM_ORDERED_TAG; 4141 break; 4142 case ATIO_ACA_QUEUE: 4143 fcp_task_attr = TCM_ACA_TAG; 4144 break; 4145 case ATIO_UNTAGGED: 4146 fcp_task_attr = TCM_SIMPLE_TAG; 4147 break; 4148 default: 4149 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4150 "qla_target: unknown task code %x, use ORDERED instead\n", 4151 task_codes); 4152 fcp_task_attr = TCM_ORDERED_TAG; 4153 break; 4154 } 4155 4156 return fcp_task_attr; 4157 } 4158 4159 /* 4160 * Process context for I/O path into tcm_qla2xxx code 4161 */ 4162 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4163 { 4164 scsi_qla_host_t *vha = cmd->vha; 4165 struct qla_hw_data *ha = vha->hw; 4166 struct fc_port *sess = cmd->sess; 4167 struct atio_from_isp *atio = &cmd->atio; 4168 unsigned char *cdb; 4169 unsigned long flags; 4170 uint32_t data_length; 4171 int ret, fcp_task_attr, data_dir, bidi = 0; 4172 struct qla_qpair *qpair = cmd->qpair; 4173 4174 cmd->cmd_in_wq = 0; 4175 cmd->trc_flags |= TRC_DO_WORK; 4176 4177 if (cmd->aborted) { 4178 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4179 "cmd with tag %u is aborted\n", 4180 cmd->atio.u.isp24.exchange_addr); 4181 goto out_term; 4182 } 4183 4184 spin_lock_init(&cmd->cmd_lock); 4185 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4186 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4187 4188 if (atio->u.isp24.fcp_cmnd.rddata && 4189 atio->u.isp24.fcp_cmnd.wrdata) { 4190 bidi = 1; 4191 data_dir = DMA_TO_DEVICE; 4192 } else if (atio->u.isp24.fcp_cmnd.rddata) 4193 data_dir = DMA_FROM_DEVICE; 4194 else if (atio->u.isp24.fcp_cmnd.wrdata) 4195 data_dir = DMA_TO_DEVICE; 4196 else 4197 data_dir = DMA_NONE; 4198 4199 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4200 atio->u.isp24.fcp_cmnd.task_attr); 4201 data_length = get_datalen_for_atio(atio); 4202 4203 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4204 fcp_task_attr, data_dir, bidi); 4205 if (ret != 0) 4206 goto out_term; 4207 /* 4208 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4209 */ 4210 ha->tgt.tgt_ops->put_sess(sess); 4211 return; 4212 4213 out_term: 4214 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4215 /* 4216 * cmd has not sent to target yet, so pass NULL as the second 4217 * argument to qlt_send_term_exchange() and free the memory here. 4218 */ 4219 cmd->trc_flags |= TRC_DO_WORK_ERR; 4220 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4221 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4222 4223 qlt_decr_num_pend_cmds(vha); 4224 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4225 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4226 4227 ha->tgt.tgt_ops->put_sess(sess); 4228 } 4229 4230 static void qlt_do_work(struct work_struct *work) 4231 { 4232 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4233 scsi_qla_host_t *vha = cmd->vha; 4234 unsigned long flags; 4235 4236 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4237 list_del(&cmd->cmd_list); 4238 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4239 4240 __qlt_do_work(cmd); 4241 } 4242 4243 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4244 { 4245 unsigned long flags; 4246 struct qla_hw_data *ha = vha->hw; 4247 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4248 void *node; 4249 u64 key = 0; 4250 4251 ql_log(ql_log_info, vha, 0x706c, 4252 "User update Number of Active Qpairs %d\n", 4253 ha->tgt.num_act_qpairs); 4254 4255 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4256 4257 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4258 btree_remove64(&tgt->lun_qpair_map, key); 4259 4260 ha->base_qpair->lun_cnt = 0; 4261 for (key = 0; key < ha->max_qpairs; key++) 4262 if (ha->queue_pair_map[key]) 4263 ha->queue_pair_map[key]->lun_cnt = 0; 4264 4265 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4266 } 4267 4268 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4269 struct qla_tgt_cmd *cmd) 4270 { 4271 struct qla_qpair *qpair, *qp; 4272 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4273 struct qla_qpair_hint *h; 4274 4275 if (vha->flags.qpairs_available) { 4276 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4277 if (unlikely(!h)) { 4278 /* spread lun to qpair ratio evently */ 4279 int lcnt = 0, rc; 4280 struct scsi_qla_host *base_vha = 4281 pci_get_drvdata(vha->hw->pdev); 4282 4283 qpair = vha->hw->base_qpair; 4284 if (qpair->lun_cnt == 0) { 4285 qpair->lun_cnt++; 4286 h = qla_qpair_to_hint(tgt, qpair); 4287 BUG_ON(!h); 4288 rc = btree_insert64(&tgt->lun_qpair_map, 4289 cmd->unpacked_lun, h, GFP_ATOMIC); 4290 if (rc) { 4291 qpair->lun_cnt--; 4292 ql_log(ql_log_info, vha, 0xd037, 4293 "Unable to insert lun %llx into lun_qpair_map\n", 4294 cmd->unpacked_lun); 4295 } 4296 goto out; 4297 } else { 4298 lcnt = qpair->lun_cnt; 4299 } 4300 4301 h = NULL; 4302 list_for_each_entry(qp, &base_vha->qp_list, 4303 qp_list_elem) { 4304 if (qp->lun_cnt == 0) { 4305 qp->lun_cnt++; 4306 h = qla_qpair_to_hint(tgt, qp); 4307 BUG_ON(!h); 4308 rc = btree_insert64(&tgt->lun_qpair_map, 4309 cmd->unpacked_lun, h, GFP_ATOMIC); 4310 if (rc) { 4311 qp->lun_cnt--; 4312 ql_log(ql_log_info, vha, 0xd038, 4313 "Unable to insert lun %llx into lun_qpair_map\n", 4314 cmd->unpacked_lun); 4315 } 4316 qpair = qp; 4317 goto out; 4318 } else { 4319 if (qp->lun_cnt < lcnt) { 4320 lcnt = qp->lun_cnt; 4321 qpair = qp; 4322 continue; 4323 } 4324 } 4325 } 4326 BUG_ON(!qpair); 4327 qpair->lun_cnt++; 4328 h = qla_qpair_to_hint(tgt, qpair); 4329 BUG_ON(!h); 4330 rc = btree_insert64(&tgt->lun_qpair_map, 4331 cmd->unpacked_lun, h, GFP_ATOMIC); 4332 if (rc) { 4333 qpair->lun_cnt--; 4334 ql_log(ql_log_info, vha, 0xd039, 4335 "Unable to insert lun %llx into lun_qpair_map\n", 4336 cmd->unpacked_lun); 4337 } 4338 } 4339 } else { 4340 h = &tgt->qphints[0]; 4341 } 4342 out: 4343 cmd->qpair = h->qpair; 4344 cmd->se_cmd.cpuid = h->cpuid; 4345 } 4346 4347 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4348 struct fc_port *sess, 4349 struct atio_from_isp *atio) 4350 { 4351 struct qla_tgt_cmd *cmd; 4352 4353 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4354 if (!cmd) 4355 return NULL; 4356 4357 cmd->cmd_type = TYPE_TGT_CMD; 4358 memcpy(&cmd->atio, atio, sizeof(*atio)); 4359 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4360 cmd->state = QLA_TGT_STATE_NEW; 4361 cmd->tgt = vha->vha_tgt.qla_tgt; 4362 qlt_incr_num_pend_cmds(vha); 4363 cmd->vha = vha; 4364 cmd->sess = sess; 4365 cmd->loop_id = sess->loop_id; 4366 cmd->conf_compl_supported = sess->conf_compl_supported; 4367 4368 cmd->trc_flags = 0; 4369 cmd->jiffies_at_alloc = get_jiffies_64(); 4370 4371 cmd->unpacked_lun = scsilun_to_int( 4372 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4373 qlt_assign_qpair(vha, cmd); 4374 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4375 cmd->vp_idx = vha->vp_idx; 4376 cmd->edif = sess->edif.enable; 4377 4378 return cmd; 4379 } 4380 4381 /* ha->hardware_lock supposed to be held on entry */ 4382 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4383 struct atio_from_isp *atio) 4384 { 4385 struct qla_hw_data *ha = vha->hw; 4386 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4387 struct fc_port *sess; 4388 struct qla_tgt_cmd *cmd; 4389 unsigned long flags; 4390 port_id_t id; 4391 4392 if (unlikely(tgt->tgt_stop)) { 4393 ql_dbg(ql_dbg_io, vha, 0x3061, 4394 "New command while device %p is shutting down\n", tgt); 4395 return -ENODEV; 4396 } 4397 4398 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4399 if (IS_SW_RESV_ADDR(id)) 4400 return -EBUSY; 4401 4402 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4403 if (unlikely(!sess)) 4404 return -EFAULT; 4405 4406 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4407 * session deletion, but it's still in sess_del_work wq */ 4408 if (sess->deleted) { 4409 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4410 "New command while old session %p is being deleted\n", 4411 sess); 4412 return -EFAULT; 4413 } 4414 4415 /* 4416 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4417 */ 4418 if (!kref_get_unless_zero(&sess->sess_kref)) { 4419 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4420 "%s: kref_get fail, %8phC oxid %x \n", 4421 __func__, sess->port_name, 4422 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4423 return -EFAULT; 4424 } 4425 4426 cmd = qlt_get_tag(vha, sess, atio); 4427 if (!cmd) { 4428 ql_dbg(ql_dbg_io, vha, 0x3062, 4429 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4430 ha->tgt.tgt_ops->put_sess(sess); 4431 return -EBUSY; 4432 } 4433 4434 cmd->cmd_in_wq = 1; 4435 cmd->trc_flags |= TRC_NEW_CMD; 4436 4437 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4438 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4439 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4440 4441 INIT_WORK(&cmd->work, qlt_do_work); 4442 if (vha->flags.qpairs_available) { 4443 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4444 } else if (ha->msix_count) { 4445 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4446 queue_work_on(smp_processor_id(), qla_tgt_wq, 4447 &cmd->work); 4448 else 4449 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4450 &cmd->work); 4451 } else { 4452 queue_work(qla_tgt_wq, &cmd->work); 4453 } 4454 4455 return 0; 4456 } 4457 4458 /* ha->hardware_lock supposed to be held on entry */ 4459 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4460 int fn, void *iocb, int flags) 4461 { 4462 struct scsi_qla_host *vha = sess->vha; 4463 struct qla_hw_data *ha = vha->hw; 4464 struct qla_tgt_mgmt_cmd *mcmd; 4465 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4466 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4467 4468 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4469 if (!mcmd) { 4470 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4471 "qla_target(%d): Allocation of management " 4472 "command failed, some commands and their data could " 4473 "leak\n", vha->vp_idx); 4474 return -ENOMEM; 4475 } 4476 memset(mcmd, 0, sizeof(*mcmd)); 4477 mcmd->sess = sess; 4478 4479 if (iocb) { 4480 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4481 sizeof(mcmd->orig_iocb.imm_ntfy)); 4482 } 4483 mcmd->tmr_func = fn; 4484 mcmd->flags = flags; 4485 mcmd->reset_count = ha->base_qpair->chip_reset; 4486 mcmd->qpair = h->qpair; 4487 mcmd->vha = vha; 4488 mcmd->se_cmd.cpuid = h->cpuid; 4489 mcmd->unpacked_lun = lun; 4490 4491 switch (fn) { 4492 case QLA_TGT_LUN_RESET: 4493 case QLA_TGT_CLEAR_TS: 4494 case QLA_TGT_ABORT_TS: 4495 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4496 fallthrough; 4497 case QLA_TGT_CLEAR_ACA: 4498 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4499 mcmd->qpair = h->qpair; 4500 mcmd->se_cmd.cpuid = h->cpuid; 4501 break; 4502 4503 case QLA_TGT_TARGET_RESET: 4504 case QLA_TGT_NEXUS_LOSS_SESS: 4505 case QLA_TGT_NEXUS_LOSS: 4506 case QLA_TGT_ABORT_ALL: 4507 default: 4508 /* no-op */ 4509 break; 4510 } 4511 4512 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4513 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4514 &mcmd->work); 4515 4516 return 0; 4517 } 4518 4519 /* ha->hardware_lock supposed to be held on entry */ 4520 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4521 { 4522 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4523 struct qla_hw_data *ha = vha->hw; 4524 struct fc_port *sess; 4525 u64 unpacked_lun; 4526 int fn; 4527 unsigned long flags; 4528 4529 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4530 4531 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4532 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4533 a->u.isp24.fcp_hdr.s_id); 4534 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4535 4536 unpacked_lun = 4537 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4538 4539 if (sess == NULL || sess->deleted) 4540 return -EFAULT; 4541 4542 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4543 } 4544 4545 /* ha->hardware_lock supposed to be held on entry */ 4546 static int __qlt_abort_task(struct scsi_qla_host *vha, 4547 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4548 { 4549 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4550 struct qla_hw_data *ha = vha->hw; 4551 struct qla_tgt_mgmt_cmd *mcmd; 4552 u64 unpacked_lun; 4553 int rc; 4554 4555 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4556 if (mcmd == NULL) { 4557 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4558 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4559 vha->vp_idx, __func__); 4560 return -ENOMEM; 4561 } 4562 memset(mcmd, 0, sizeof(*mcmd)); 4563 4564 mcmd->sess = sess; 4565 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4566 sizeof(mcmd->orig_iocb.imm_ntfy)); 4567 4568 unpacked_lun = 4569 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4570 mcmd->reset_count = ha->base_qpair->chip_reset; 4571 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4572 mcmd->qpair = ha->base_qpair; 4573 4574 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4575 le16_to_cpu(iocb->u.isp2x.seq_id)); 4576 if (rc != 0) { 4577 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4578 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4579 vha->vp_idx, rc); 4580 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4581 return -EFAULT; 4582 } 4583 4584 return 0; 4585 } 4586 4587 /* ha->hardware_lock supposed to be held on entry */ 4588 static int qlt_abort_task(struct scsi_qla_host *vha, 4589 struct imm_ntfy_from_isp *iocb) 4590 { 4591 struct qla_hw_data *ha = vha->hw; 4592 struct fc_port *sess; 4593 int loop_id; 4594 unsigned long flags; 4595 4596 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4597 4598 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4599 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4600 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4601 4602 if (sess == NULL) { 4603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4604 "qla_target(%d): task abort for unexisting " 4605 "session\n", vha->vp_idx); 4606 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4607 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4608 } 4609 4610 return __qlt_abort_task(vha, iocb, sess); 4611 } 4612 4613 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4614 { 4615 if (rc != MBS_COMMAND_COMPLETE) { 4616 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4617 "%s: se_sess %p / sess %p from" 4618 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4619 " LOGO failed: %#x\n", 4620 __func__, 4621 fcport->se_sess, 4622 fcport, 4623 fcport->port_name, fcport->loop_id, 4624 fcport->d_id.b.domain, fcport->d_id.b.area, 4625 fcport->d_id.b.al_pa, rc); 4626 } 4627 4628 fcport->logout_completed = 1; 4629 } 4630 4631 /* 4632 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4633 * 4634 * Schedules sessions with matching port_id/loop_id but different wwn for 4635 * deletion. Returns existing session with matching wwn if present. 4636 * Null otherwise. 4637 */ 4638 struct fc_port * 4639 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4640 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4641 { 4642 struct fc_port *sess = NULL, *other_sess; 4643 uint64_t other_wwn; 4644 4645 *conflict_sess = NULL; 4646 4647 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4648 4649 other_wwn = wwn_to_u64(other_sess->port_name); 4650 4651 if (wwn == other_wwn) { 4652 WARN_ON(sess); 4653 sess = other_sess; 4654 continue; 4655 } 4656 4657 /* find other sess with nport_id collision */ 4658 if (port_id.b24 == other_sess->d_id.b24) { 4659 if (loop_id != other_sess->loop_id) { 4660 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4661 "Invalidating sess %p loop_id %d wwn %llx.\n", 4662 other_sess, other_sess->loop_id, other_wwn); 4663 4664 /* 4665 * logout_on_delete is set by default, but another 4666 * session that has the same s_id/loop_id combo 4667 * might have cleared it when requested this session 4668 * deletion, so don't touch it 4669 */ 4670 qlt_schedule_sess_for_deletion(other_sess); 4671 } else { 4672 /* 4673 * Another wwn used to have our s_id/loop_id 4674 * kill the session, but don't free the loop_id 4675 */ 4676 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4677 "Invalidating sess %p loop_id %d wwn %llx.\n", 4678 other_sess, other_sess->loop_id, other_wwn); 4679 4680 other_sess->keep_nport_handle = 1; 4681 if (other_sess->disc_state != DSC_DELETED) 4682 *conflict_sess = other_sess; 4683 qlt_schedule_sess_for_deletion(other_sess); 4684 } 4685 continue; 4686 } 4687 4688 /* find other sess with nport handle collision */ 4689 if ((loop_id == other_sess->loop_id) && 4690 (loop_id != FC_NO_LOOP_ID)) { 4691 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4692 "Invalidating sess %p loop_id %d wwn %llx.\n", 4693 other_sess, other_sess->loop_id, other_wwn); 4694 4695 /* Same loop_id but different s_id 4696 * Ok to kill and logout */ 4697 qlt_schedule_sess_for_deletion(other_sess); 4698 } 4699 } 4700 4701 return sess; 4702 } 4703 4704 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4705 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4706 { 4707 struct qla_tgt_sess_op *op; 4708 struct qla_tgt_cmd *cmd; 4709 uint32_t key; 4710 int count = 0; 4711 unsigned long flags; 4712 4713 key = (((u32)s_id->b.domain << 16) | 4714 ((u32)s_id->b.area << 8) | 4715 ((u32)s_id->b.al_pa)); 4716 4717 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4718 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4719 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4720 4721 if (op_key == key) { 4722 op->aborted = true; 4723 count++; 4724 } 4725 } 4726 4727 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4728 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4729 4730 if (cmd_key == key) { 4731 cmd->aborted = 1; 4732 count++; 4733 } 4734 } 4735 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4736 4737 return count; 4738 } 4739 4740 static int qlt_handle_login(struct scsi_qla_host *vha, 4741 struct imm_ntfy_from_isp *iocb) 4742 { 4743 struct fc_port *sess = NULL, *conflict_sess = NULL; 4744 uint64_t wwn; 4745 port_id_t port_id; 4746 uint16_t loop_id, wd3_lo; 4747 int res = 0; 4748 struct qlt_plogi_ack_t *pla; 4749 unsigned long flags; 4750 4751 lockdep_assert_held(&vha->hw->hardware_lock); 4752 4753 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4754 4755 port_id.b.domain = iocb->u.isp24.port_id[2]; 4756 port_id.b.area = iocb->u.isp24.port_id[1]; 4757 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4758 port_id.b.rsvd_1 = 0; 4759 4760 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4761 4762 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4763 abort_cmds_for_s_id(vha, &port_id); 4764 4765 if (wwn) { 4766 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4767 sess = qlt_find_sess_invalidate_other(vha, wwn, 4768 port_id, loop_id, &conflict_sess); 4769 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4770 } else { 4771 ql_dbg(ql_dbg_disc, vha, 0xffff, 4772 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4773 __func__, __LINE__, loop_id, port_id.b24); 4774 qlt_send_term_imm_notif(vha, iocb, 1); 4775 goto out; 4776 } 4777 4778 if (IS_SW_RESV_ADDR(port_id)) { 4779 res = 1; 4780 goto out; 4781 } 4782 4783 if (vha->hw->flags.edif_enabled && 4784 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4785 iocb->u.isp24.status_subcode == ELS_PLOGI && 4786 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4787 ql_dbg(ql_dbg_disc, vha, 0xffff, 4788 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4789 __func__, __LINE__, loop_id, port_id.b24); 4790 qlt_send_term_imm_notif(vha, iocb, 1); 4791 goto out; 4792 } 4793 4794 if (vha->hw->flags.edif_enabled) { 4795 if (DBELL_INACTIVE(vha)) { 4796 ql_dbg(ql_dbg_disc, vha, 0xffff, 4797 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4798 __func__, __LINE__, loop_id, port_id.b24); 4799 qlt_send_term_imm_notif(vha, iocb, 1); 4800 goto out; 4801 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4802 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4803 ql_dbg(ql_dbg_disc, vha, 0xffff, 4804 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4805 __func__, __LINE__, loop_id, port_id.b24); 4806 qlt_send_term_imm_notif(vha, iocb, 1); 4807 goto out; 4808 } 4809 } 4810 4811 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4812 if (!pla) { 4813 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4814 "%s %d %8phC Term INOT due to mem alloc fail", 4815 __func__, __LINE__, 4816 iocb->u.isp24.port_name); 4817 qlt_send_term_imm_notif(vha, iocb, 1); 4818 goto out; 4819 } 4820 4821 if (conflict_sess) { 4822 conflict_sess->login_gen++; 4823 qlt_plogi_ack_link(vha, pla, conflict_sess, 4824 QLT_PLOGI_LINK_CONFLICT); 4825 } 4826 4827 if (!sess) { 4828 pla->ref_count++; 4829 ql_dbg(ql_dbg_disc, vha, 0xffff, 4830 "%s %d %8phC post new sess\n", 4831 __func__, __LINE__, iocb->u.isp24.port_name); 4832 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4833 qla24xx_post_newsess_work(vha, &port_id, 4834 iocb->u.isp24.port_name, 4835 iocb->u.isp24.u.plogi.node_name, 4836 pla, 0); 4837 else 4838 qla24xx_post_newsess_work(vha, &port_id, 4839 iocb->u.isp24.port_name, NULL, 4840 pla, 0); 4841 4842 goto out; 4843 } 4844 4845 if (sess->disc_state == DSC_UPD_FCPORT) { 4846 u16 sec; 4847 4848 /* 4849 * Remote port registration is still going on from 4850 * previous login. Allow it to finish before we 4851 * accept the new login. 4852 */ 4853 sess->next_disc_state = DSC_DELETE_PEND; 4854 sec = jiffies_to_msecs(jiffies - 4855 sess->jiffies_at_registration) / 1000; 4856 if (sess->sec_since_registration < sec && sec && 4857 !(sec % 5)) { 4858 sess->sec_since_registration = sec; 4859 ql_dbg(ql_dbg_disc, vha, 0xffff, 4860 "%s %8phC - Slow Rport registration (%d Sec)\n", 4861 __func__, sess->port_name, sec); 4862 } 4863 4864 if (!conflict_sess) { 4865 list_del(&pla->list); 4866 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4867 } 4868 4869 qlt_send_term_imm_notif(vha, iocb, 1); 4870 goto out; 4871 } 4872 4873 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4874 sess->d_id = port_id; 4875 sess->login_gen++; 4876 sess->loop_id = loop_id; 4877 4878 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4879 /* remote port has assigned Port ID */ 4880 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4881 vha->d_id = sess->d_id; 4882 4883 ql_dbg(ql_dbg_disc, vha, 0xffff, 4884 "%s %8phC - send port online\n", 4885 __func__, sess->port_name); 4886 4887 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4888 sess->d_id.b24); 4889 } 4890 4891 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4892 sess->fw_login_state = DSC_LS_PRLI_PEND; 4893 sess->local = 0; 4894 sess->loop_id = loop_id; 4895 sess->d_id = port_id; 4896 sess->fw_login_state = DSC_LS_PRLI_PEND; 4897 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4898 4899 if (wd3_lo & BIT_7) 4900 sess->conf_compl_supported = 1; 4901 4902 if ((wd3_lo & BIT_4) == 0) 4903 sess->port_type = FCT_INITIATOR; 4904 else 4905 sess->port_type = FCT_TARGET; 4906 4907 } else 4908 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4909 4910 4911 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4912 "%s %d %8phC DS %d\n", 4913 __func__, __LINE__, sess->port_name, sess->disc_state); 4914 4915 switch (sess->disc_state) { 4916 case DSC_DELETED: 4917 case DSC_LOGIN_PEND: 4918 qlt_plogi_ack_unref(vha, pla); 4919 break; 4920 4921 default: 4922 /* 4923 * Under normal circumstances we want to release nport handle 4924 * during LOGO process to avoid nport handle leaks inside FW. 4925 * The exception is when LOGO is done while another PLOGI with 4926 * the same nport handle is waiting as might be the case here. 4927 * Note: there is always a possibily of a race where session 4928 * deletion has already started for other reasons (e.g. ACL 4929 * removal) and now PLOGI arrives: 4930 * 1. if PLOGI arrived in FW after nport handle has been freed, 4931 * FW must have assigned this PLOGI a new/same handle and we 4932 * can proceed ACK'ing it as usual when session deletion 4933 * completes. 4934 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4935 * bit reached it, the handle has now been released. We'll 4936 * get an error when we ACK this PLOGI. Nothing will be sent 4937 * back to initiator. Initiator should eventually retry 4938 * PLOGI and situation will correct itself. 4939 */ 4940 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4941 (sess->d_id.b24 == port_id.b24)); 4942 4943 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4944 "%s %d %8phC post del sess\n", 4945 __func__, __LINE__, sess->port_name); 4946 4947 4948 qlt_schedule_sess_for_deletion(sess); 4949 break; 4950 } 4951 out: 4952 return res; 4953 } 4954 4955 /* 4956 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4957 */ 4958 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4959 struct imm_ntfy_from_isp *iocb) 4960 { 4961 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4962 struct qla_hw_data *ha = vha->hw; 4963 struct fc_port *sess = NULL, *conflict_sess = NULL; 4964 uint64_t wwn; 4965 port_id_t port_id; 4966 uint16_t loop_id; 4967 uint16_t wd3_lo; 4968 int res = 0; 4969 unsigned long flags; 4970 4971 lockdep_assert_held(&ha->hardware_lock); 4972 4973 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4974 4975 port_id.b.domain = iocb->u.isp24.port_id[2]; 4976 port_id.b.area = iocb->u.isp24.port_id[1]; 4977 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4978 port_id.b.rsvd_1 = 0; 4979 4980 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4981 4982 ql_dbg(ql_dbg_disc, vha, 0xf026, 4983 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4984 vha->vp_idx, iocb->u.isp24.port_id[2], 4985 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4986 iocb->u.isp24.status_subcode, loop_id, 4987 iocb->u.isp24.port_name); 4988 4989 /* res = 1 means ack at the end of thread 4990 * res = 0 means ack async/later. 4991 */ 4992 switch (iocb->u.isp24.status_subcode) { 4993 case ELS_PLOGI: 4994 res = qlt_handle_login(vha, iocb); 4995 break; 4996 4997 case ELS_PRLI: 4998 if (N2N_TOPO(ha)) { 4999 sess = qla2x00_find_fcport_by_wwpn(vha, 5000 iocb->u.isp24.port_name, 1); 5001 5002 if (vha->hw->flags.edif_enabled && sess && 5003 (!(sess->flags & FCF_FCSP_DEVICE) || 5004 !sess->edif.authok)) { 5005 ql_dbg(ql_dbg_disc, vha, 0xffff, 5006 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 5007 __func__, __LINE__, iocb->u.isp24.port_name); 5008 qlt_send_term_imm_notif(vha, iocb, 1); 5009 break; 5010 } 5011 5012 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5013 ql_dbg(ql_dbg_disc, vha, 0xffff, 5014 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5015 __func__, __LINE__, 5016 iocb->u.isp24.port_name); 5017 qlt_send_term_imm_notif(vha, iocb, 1); 5018 break; 5019 } 5020 5021 res = qlt_handle_login(vha, iocb); 5022 break; 5023 } 5024 5025 if (IS_SW_RESV_ADDR(port_id)) { 5026 res = 1; 5027 break; 5028 } 5029 5030 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5031 5032 if (wwn) { 5033 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5034 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5035 loop_id, &conflict_sess); 5036 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5037 } 5038 5039 if (conflict_sess) { 5040 switch (conflict_sess->disc_state) { 5041 case DSC_DELETED: 5042 case DSC_DELETE_PEND: 5043 break; 5044 default: 5045 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5046 "PRLI with conflicting sess %p port %8phC\n", 5047 conflict_sess, conflict_sess->port_name); 5048 conflict_sess->fw_login_state = 5049 DSC_LS_PORT_UNAVAIL; 5050 qlt_send_term_imm_notif(vha, iocb, 1); 5051 res = 0; 5052 break; 5053 } 5054 } 5055 5056 if (sess != NULL) { 5057 bool delete = false; 5058 int sec; 5059 5060 if (vha->hw->flags.edif_enabled && sess && 5061 (!(sess->flags & FCF_FCSP_DEVICE) || 5062 !sess->edif.authok)) { 5063 ql_dbg(ql_dbg_disc, vha, 0xffff, 5064 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5065 __func__, __LINE__, iocb->u.isp24.port_name); 5066 qlt_send_term_imm_notif(vha, iocb, 1); 5067 break; 5068 } 5069 5070 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5071 switch (sess->fw_login_state) { 5072 case DSC_LS_PLOGI_PEND: 5073 case DSC_LS_PLOGI_COMP: 5074 case DSC_LS_PRLI_COMP: 5075 break; 5076 default: 5077 delete = true; 5078 break; 5079 } 5080 5081 switch (sess->disc_state) { 5082 case DSC_UPD_FCPORT: 5083 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5084 flags); 5085 5086 sec = jiffies_to_msecs(jiffies - 5087 sess->jiffies_at_registration)/1000; 5088 if (sess->sec_since_registration < sec && sec && 5089 !(sec % 5)) { 5090 sess->sec_since_registration = sec; 5091 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5092 "%s %8phC : Slow Rport registration(%d Sec)\n", 5093 __func__, sess->port_name, sec); 5094 } 5095 qlt_send_term_imm_notif(vha, iocb, 1); 5096 return 0; 5097 5098 case DSC_LOGIN_PEND: 5099 case DSC_GPDB: 5100 case DSC_LOGIN_COMPLETE: 5101 case DSC_ADISC: 5102 delete = false; 5103 break; 5104 default: 5105 break; 5106 } 5107 5108 if (delete) { 5109 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5110 flags); 5111 /* 5112 * Impatient initiator sent PRLI before last 5113 * PLOGI could finish. Will force him to re-try, 5114 * while last one finishes. 5115 */ 5116 ql_log(ql_log_warn, sess->vha, 0xf095, 5117 "sess %p PRLI received, before plogi ack.\n", 5118 sess); 5119 qlt_send_term_imm_notif(vha, iocb, 1); 5120 res = 0; 5121 break; 5122 } 5123 5124 /* 5125 * This shouldn't happen under normal circumstances, 5126 * since we have deleted the old session during PLOGI 5127 */ 5128 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5129 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5130 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5131 5132 sess->local = 0; 5133 sess->loop_id = loop_id; 5134 sess->d_id = port_id; 5135 sess->fw_login_state = DSC_LS_PRLI_PEND; 5136 5137 if (wd3_lo & BIT_7) 5138 sess->conf_compl_supported = 1; 5139 5140 if ((wd3_lo & BIT_4) == 0) 5141 sess->port_type = FCT_INITIATOR; 5142 else 5143 sess->port_type = FCT_TARGET; 5144 5145 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5146 } 5147 res = 1; /* send notify ack */ 5148 5149 /* Make session global (not used in fabric mode) */ 5150 if (ha->current_topology != ISP_CFG_F) { 5151 if (sess) { 5152 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5153 "%s %d %8phC post nack\n", 5154 __func__, __LINE__, sess->port_name); 5155 qla24xx_post_nack_work(vha, sess, iocb, 5156 SRB_NACK_PRLI); 5157 res = 0; 5158 } else { 5159 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5160 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5161 qla2xxx_wake_dpc(vha); 5162 } 5163 } else { 5164 if (sess) { 5165 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5166 "%s %d %8phC post nack\n", 5167 __func__, __LINE__, sess->port_name); 5168 qla24xx_post_nack_work(vha, sess, iocb, 5169 SRB_NACK_PRLI); 5170 res = 0; 5171 } 5172 } 5173 break; 5174 5175 case ELS_TPRLO: 5176 if (le16_to_cpu(iocb->u.isp24.flags) & 5177 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5178 loop_id = 0xFFFF; 5179 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5180 res = 1; 5181 break; 5182 } 5183 fallthrough; 5184 case ELS_LOGO: 5185 case ELS_PRLO: 5186 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5187 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5188 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5189 5190 if (sess) { 5191 sess->login_gen++; 5192 sess->fw_login_state = DSC_LS_LOGO_PEND; 5193 sess->logo_ack_needed = 1; 5194 memcpy(sess->iocb, iocb, IOCB_SIZE); 5195 } 5196 5197 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5198 5199 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5200 "%s: logo %llx res %d sess %p ", 5201 __func__, wwn, res, sess); 5202 if (res == 0) { 5203 /* 5204 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5205 * for LOGO_ACK & sess delete 5206 */ 5207 BUG_ON(!sess); 5208 res = 0; 5209 } else { 5210 /* cmd did not go to upper layer. */ 5211 if (sess) { 5212 qlt_schedule_sess_for_deletion(sess); 5213 res = 0; 5214 } 5215 /* else logo will be ack */ 5216 } 5217 break; 5218 case ELS_PDISC: 5219 case ELS_ADISC: 5220 { 5221 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5222 5223 if (tgt->link_reinit_iocb_pending) { 5224 qlt_send_notify_ack(ha->base_qpair, 5225 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5226 tgt->link_reinit_iocb_pending = 0; 5227 } 5228 5229 sess = qla2x00_find_fcport_by_wwpn(vha, 5230 iocb->u.isp24.port_name, 1); 5231 if (sess) { 5232 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5233 "sess %p lid %d|%d DS %d LS %d\n", 5234 sess, sess->loop_id, loop_id, 5235 sess->disc_state, sess->fw_login_state); 5236 } 5237 5238 res = 1; /* send notify ack */ 5239 break; 5240 } 5241 5242 case ELS_FLOGI: /* should never happen */ 5243 default: 5244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5245 "qla_target(%d): Unsupported ELS command %x " 5246 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5247 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5248 break; 5249 } 5250 5251 ql_dbg(ql_dbg_disc, vha, 0xf026, 5252 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5253 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5254 5255 return res; 5256 } 5257 5258 /* 5259 * ha->hardware_lock supposed to be held on entry. 5260 * Might drop it, then reacquire. 5261 */ 5262 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5263 struct imm_ntfy_from_isp *iocb) 5264 { 5265 struct qla_hw_data *ha = vha->hw; 5266 uint32_t add_flags = 0; 5267 int send_notify_ack = 1; 5268 uint16_t status; 5269 5270 lockdep_assert_held(&ha->hardware_lock); 5271 5272 status = le16_to_cpu(iocb->u.isp2x.status); 5273 switch (status) { 5274 case IMM_NTFY_LIP_RESET: 5275 { 5276 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5277 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5278 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5279 iocb->u.isp24.status_subcode); 5280 5281 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5282 send_notify_ack = 0; 5283 break; 5284 } 5285 5286 case IMM_NTFY_LIP_LINK_REINIT: 5287 { 5288 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5289 5290 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5291 "qla_target(%d): LINK REINIT (loop %#x, " 5292 "subcode %x)\n", vha->vp_idx, 5293 le16_to_cpu(iocb->u.isp24.nport_handle), 5294 iocb->u.isp24.status_subcode); 5295 if (tgt->link_reinit_iocb_pending) { 5296 qlt_send_notify_ack(ha->base_qpair, 5297 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5298 } 5299 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5300 tgt->link_reinit_iocb_pending = 1; 5301 /* 5302 * QLogic requires to wait after LINK REINIT for possible 5303 * PDISC or ADISC ELS commands 5304 */ 5305 send_notify_ack = 0; 5306 break; 5307 } 5308 5309 case IMM_NTFY_PORT_LOGOUT: 5310 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5311 "qla_target(%d): Port logout (loop " 5312 "%#x, subcode %x)\n", vha->vp_idx, 5313 le16_to_cpu(iocb->u.isp24.nport_handle), 5314 iocb->u.isp24.status_subcode); 5315 5316 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5317 send_notify_ack = 0; 5318 /* The sessions will be cleared in the callback, if needed */ 5319 break; 5320 5321 case IMM_NTFY_GLBL_TPRLO: 5322 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5323 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5324 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5325 send_notify_ack = 0; 5326 /* The sessions will be cleared in the callback, if needed */ 5327 break; 5328 5329 case IMM_NTFY_PORT_CONFIG: 5330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5331 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5332 status); 5333 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5334 send_notify_ack = 0; 5335 /* The sessions will be cleared in the callback, if needed */ 5336 break; 5337 5338 case IMM_NTFY_GLBL_LOGO: 5339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5340 "qla_target(%d): Link failure detected\n", 5341 vha->vp_idx); 5342 /* I_T nexus loss */ 5343 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5344 send_notify_ack = 0; 5345 break; 5346 5347 case IMM_NTFY_IOCB_OVERFLOW: 5348 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5349 "qla_target(%d): Cannot provide requested " 5350 "capability (IOCB overflowed the immediate notify " 5351 "resource count)\n", vha->vp_idx); 5352 break; 5353 5354 case IMM_NTFY_ABORT_TASK: 5355 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5356 "qla_target(%d): Abort Task (S %08x I %#x -> " 5357 "L %#x)\n", vha->vp_idx, 5358 le16_to_cpu(iocb->u.isp2x.seq_id), 5359 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5360 le16_to_cpu(iocb->u.isp2x.lun)); 5361 if (qlt_abort_task(vha, iocb) == 0) 5362 send_notify_ack = 0; 5363 break; 5364 5365 case IMM_NTFY_RESOURCE: 5366 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5367 "qla_target(%d): Out of resources, host %ld\n", 5368 vha->vp_idx, vha->host_no); 5369 break; 5370 5371 case IMM_NTFY_MSG_RX: 5372 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5373 "qla_target(%d): Immediate notify task %x\n", 5374 vha->vp_idx, iocb->u.isp2x.task_flags); 5375 break; 5376 5377 case IMM_NTFY_ELS: 5378 if (qlt_24xx_handle_els(vha, iocb) == 0) 5379 send_notify_ack = 0; 5380 break; 5381 default: 5382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5383 "qla_target(%d): Received unknown immediate " 5384 "notify status %x\n", vha->vp_idx, status); 5385 break; 5386 } 5387 5388 if (send_notify_ack) 5389 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5390 0, 0); 5391 } 5392 5393 /* 5394 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5395 * This function sends busy to ISP 2xxx or 24xx. 5396 */ 5397 static int __qlt_send_busy(struct qla_qpair *qpair, 5398 struct atio_from_isp *atio, uint16_t status) 5399 { 5400 struct scsi_qla_host *vha = qpair->vha; 5401 struct ctio7_to_24xx *ctio24; 5402 struct qla_hw_data *ha = vha->hw; 5403 request_t *pkt; 5404 struct fc_port *sess = NULL; 5405 unsigned long flags; 5406 u16 temp; 5407 port_id_t id; 5408 5409 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5410 5411 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5412 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5413 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5414 if (!sess) { 5415 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5416 return 0; 5417 } 5418 /* Sending marker isn't necessary, since we called from ISR */ 5419 5420 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5421 if (!pkt) { 5422 ql_dbg(ql_dbg_io, vha, 0x3063, 5423 "qla_target(%d): %s failed: unable to allocate " 5424 "request packet", vha->vp_idx, __func__); 5425 return -ENOMEM; 5426 } 5427 5428 qpair->tgt_counters.num_q_full_sent++; 5429 pkt->entry_count = 1; 5430 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5431 5432 ctio24 = (struct ctio7_to_24xx *)pkt; 5433 ctio24->entry_type = CTIO_TYPE7; 5434 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5435 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5436 ctio24->vp_index = vha->vp_idx; 5437 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5438 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5439 temp = (atio->u.isp24.attr << 9) | 5440 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5441 CTIO7_FLAGS_DONT_RET_CTIO; 5442 ctio24->u.status1.flags = cpu_to_le16(temp); 5443 /* 5444 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5445 * if the explicit conformation is used. 5446 */ 5447 ctio24->u.status1.ox_id = 5448 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5449 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5450 5451 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5452 5453 if (ctio24->u.status1.residual != 0) 5454 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5455 5456 /* Memory Barrier */ 5457 wmb(); 5458 if (qpair->reqq_start_iocbs) 5459 qpair->reqq_start_iocbs(qpair); 5460 else 5461 qla2x00_start_iocbs(vha, qpair->req); 5462 return 0; 5463 } 5464 5465 /* 5466 * This routine is used to allocate a command for either a QFull condition 5467 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5468 * out previously. 5469 */ 5470 static void 5471 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5472 struct atio_from_isp *atio, uint16_t status, int qfull) 5473 { 5474 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5475 struct qla_hw_data *ha = vha->hw; 5476 struct fc_port *sess; 5477 struct qla_tgt_cmd *cmd; 5478 unsigned long flags; 5479 5480 if (unlikely(tgt->tgt_stop)) { 5481 ql_dbg(ql_dbg_io, vha, 0x300a, 5482 "New command while device %p is shutting down\n", tgt); 5483 return; 5484 } 5485 5486 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5487 vha->hw->tgt.num_qfull_cmds_dropped++; 5488 if (vha->hw->tgt.num_qfull_cmds_dropped > 5489 vha->qla_stats.stat_max_qfull_cmds_dropped) 5490 vha->qla_stats.stat_max_qfull_cmds_dropped = 5491 vha->hw->tgt.num_qfull_cmds_dropped; 5492 5493 ql_dbg(ql_dbg_io, vha, 0x3068, 5494 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5495 vha->vp_idx, __func__, 5496 vha->hw->tgt.num_qfull_cmds_dropped); 5497 5498 qlt_chk_exch_leak_thresh_hold(vha); 5499 return; 5500 } 5501 5502 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5503 (vha, atio->u.isp24.fcp_hdr.s_id); 5504 if (!sess) 5505 return; 5506 5507 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5508 if (!cmd) { 5509 ql_dbg(ql_dbg_io, vha, 0x3009, 5510 "qla_target(%d): %s: Allocation of cmd failed\n", 5511 vha->vp_idx, __func__); 5512 5513 vha->hw->tgt.num_qfull_cmds_dropped++; 5514 if (vha->hw->tgt.num_qfull_cmds_dropped > 5515 vha->qla_stats.stat_max_qfull_cmds_dropped) 5516 vha->qla_stats.stat_max_qfull_cmds_dropped = 5517 vha->hw->tgt.num_qfull_cmds_dropped; 5518 5519 qlt_chk_exch_leak_thresh_hold(vha); 5520 return; 5521 } 5522 5523 qlt_incr_num_pend_cmds(vha); 5524 INIT_LIST_HEAD(&cmd->cmd_list); 5525 memcpy(&cmd->atio, atio, sizeof(*atio)); 5526 5527 cmd->tgt = vha->vha_tgt.qla_tgt; 5528 cmd->vha = vha; 5529 cmd->reset_count = ha->base_qpair->chip_reset; 5530 cmd->q_full = 1; 5531 cmd->qpair = ha->base_qpair; 5532 5533 if (qfull) { 5534 cmd->q_full = 1; 5535 /* NOTE: borrowing the state field to carry the status */ 5536 cmd->state = status; 5537 } else 5538 cmd->term_exchg = 1; 5539 5540 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5541 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5542 5543 vha->hw->tgt.num_qfull_cmds_alloc++; 5544 if (vha->hw->tgt.num_qfull_cmds_alloc > 5545 vha->qla_stats.stat_max_qfull_cmds_alloc) 5546 vha->qla_stats.stat_max_qfull_cmds_alloc = 5547 vha->hw->tgt.num_qfull_cmds_alloc; 5548 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5549 } 5550 5551 int 5552 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5553 { 5554 struct scsi_qla_host *vha = qpair->vha; 5555 struct qla_hw_data *ha = vha->hw; 5556 unsigned long flags; 5557 struct qla_tgt_cmd *cmd, *tcmd; 5558 struct list_head free_list, q_full_list; 5559 int rc = 0; 5560 5561 if (list_empty(&ha->tgt.q_full_list)) 5562 return 0; 5563 5564 INIT_LIST_HEAD(&free_list); 5565 INIT_LIST_HEAD(&q_full_list); 5566 5567 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5568 if (list_empty(&ha->tgt.q_full_list)) { 5569 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5570 return 0; 5571 } 5572 5573 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5574 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5575 5576 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5577 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5578 if (cmd->q_full) 5579 /* cmd->state is a borrowed field to hold status */ 5580 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5581 else if (cmd->term_exchg) 5582 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5583 5584 if (rc == -ENOMEM) 5585 break; 5586 5587 if (cmd->q_full) 5588 ql_dbg(ql_dbg_io, vha, 0x3006, 5589 "%s: busy sent for ox_id[%04x]\n", __func__, 5590 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5591 else if (cmd->term_exchg) 5592 ql_dbg(ql_dbg_io, vha, 0x3007, 5593 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5594 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5595 else 5596 ql_dbg(ql_dbg_io, vha, 0x3008, 5597 "%s: Unexpected cmd in QFull list %p\n", __func__, 5598 cmd); 5599 5600 list_move_tail(&cmd->cmd_list, &free_list); 5601 5602 /* piggy back on hardware_lock for protection */ 5603 vha->hw->tgt.num_qfull_cmds_alloc--; 5604 } 5605 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5606 5607 cmd = NULL; 5608 5609 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5610 list_del(&cmd->cmd_list); 5611 /* This cmd was never sent to TCM. There is no need 5612 * to schedule free or call free_cmd 5613 */ 5614 qlt_free_cmd(cmd); 5615 } 5616 5617 if (!list_empty(&q_full_list)) { 5618 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5619 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5620 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5621 } 5622 5623 return rc; 5624 } 5625 5626 static void 5627 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5628 uint16_t status) 5629 { 5630 int rc = 0; 5631 struct scsi_qla_host *vha = qpair->vha; 5632 5633 rc = __qlt_send_busy(qpair, atio, status); 5634 if (rc == -ENOMEM) 5635 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5636 } 5637 5638 static int 5639 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5640 struct atio_from_isp *atio, uint8_t ha_locked) 5641 { 5642 struct qla_hw_data *ha = vha->hw; 5643 unsigned long flags; 5644 5645 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5646 return 0; 5647 5648 if (!ha_locked) 5649 spin_lock_irqsave(&ha->hardware_lock, flags); 5650 qlt_send_busy(qpair, atio, qla_sam_status); 5651 if (!ha_locked) 5652 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5653 5654 return 1; 5655 } 5656 5657 /* ha->hardware_lock supposed to be held on entry */ 5658 /* called via callback from qla2xxx */ 5659 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5660 struct atio_from_isp *atio, uint8_t ha_locked) 5661 { 5662 struct qla_hw_data *ha = vha->hw; 5663 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5664 int rc; 5665 unsigned long flags = 0; 5666 5667 if (unlikely(tgt == NULL)) { 5668 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5669 "ATIO pkt, but no tgt (ha %p)", ha); 5670 return; 5671 } 5672 /* 5673 * In tgt_stop mode we also should allow all requests to pass. 5674 * Otherwise, some commands can stuck. 5675 */ 5676 5677 tgt->atio_irq_cmd_count++; 5678 5679 switch (atio->u.raw.entry_type) { 5680 case ATIO_TYPE7: 5681 if (unlikely(atio->u.isp24.exchange_addr == 5682 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5683 ql_dbg(ql_dbg_io, vha, 0x3065, 5684 "qla_target(%d): ATIO_TYPE7 " 5685 "received with UNKNOWN exchange address, " 5686 "sending QUEUE_FULL\n", vha->vp_idx); 5687 if (!ha_locked) 5688 spin_lock_irqsave(&ha->hardware_lock, flags); 5689 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5690 if (!ha_locked) 5691 spin_unlock_irqrestore(&ha->hardware_lock, 5692 flags); 5693 break; 5694 } 5695 5696 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5697 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5698 atio, ha_locked); 5699 if (rc != 0) { 5700 tgt->atio_irq_cmd_count--; 5701 return; 5702 } 5703 rc = qlt_handle_cmd_for_atio(vha, atio); 5704 } else { 5705 rc = qlt_handle_task_mgmt(vha, atio); 5706 } 5707 if (unlikely(rc != 0)) { 5708 if (!ha_locked) 5709 spin_lock_irqsave(&ha->hardware_lock, flags); 5710 switch (rc) { 5711 case -ENODEV: 5712 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5713 "qla_target: Unable to send command to target\n"); 5714 break; 5715 case -EBADF: 5716 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5717 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5718 qlt_send_term_exchange(ha->base_qpair, NULL, 5719 atio, 1, 0); 5720 break; 5721 case -EBUSY: 5722 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5723 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5724 vha->vp_idx); 5725 qlt_send_busy(ha->base_qpair, atio, 5726 tc_sam_status); 5727 break; 5728 default: 5729 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5730 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5731 vha->vp_idx); 5732 qlt_send_busy(ha->base_qpair, atio, 5733 qla_sam_status); 5734 break; 5735 } 5736 if (!ha_locked) 5737 spin_unlock_irqrestore(&ha->hardware_lock, 5738 flags); 5739 } 5740 break; 5741 5742 case IMMED_NOTIFY_TYPE: 5743 { 5744 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5745 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5746 "qla_target(%d): Received ATIO packet %x " 5747 "with error status %x\n", vha->vp_idx, 5748 atio->u.raw.entry_type, 5749 atio->u.isp2x.entry_status); 5750 break; 5751 } 5752 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5753 5754 if (!ha_locked) 5755 spin_lock_irqsave(&ha->hardware_lock, flags); 5756 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5757 if (!ha_locked) 5758 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5759 break; 5760 } 5761 5762 default: 5763 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5764 "qla_target(%d): Received unknown ATIO atio " 5765 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5766 break; 5767 } 5768 5769 tgt->atio_irq_cmd_count--; 5770 } 5771 5772 /* 5773 * qpair lock is assume to be held 5774 * rc = 0 : send terminate & abts respond 5775 * rc != 0: do not send term & abts respond 5776 */ 5777 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5778 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5779 { 5780 struct qla_hw_data *ha = vha->hw; 5781 int rc = 0; 5782 5783 /* 5784 * Detect unresolved exchange. If the same ABTS is unable 5785 * to terminate an existing command and the same ABTS loops 5786 * between FW & Driver, then force FW dump. Under 1 jiff, 5787 * we should see multiple loops. 5788 */ 5789 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5790 qpair->retry_term_jiff == jiffies) { 5791 /* found existing exchange */ 5792 qpair->retry_term_cnt++; 5793 if (qpair->retry_term_cnt >= 5) { 5794 rc = -EIO; 5795 qpair->retry_term_cnt = 0; 5796 ql_log(ql_log_warn, vha, 0xffff, 5797 "Unable to send ABTS Respond. Dumping firmware.\n"); 5798 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5799 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5800 5801 if (qpair == ha->base_qpair) 5802 ha->isp_ops->fw_dump(vha); 5803 else 5804 qla2xxx_dump_fw(vha); 5805 5806 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5807 qla2xxx_wake_dpc(vha); 5808 } 5809 } else if (qpair->retry_term_jiff != jiffies) { 5810 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5811 qpair->retry_term_cnt = 0; 5812 qpair->retry_term_jiff = jiffies; 5813 } 5814 5815 return rc; 5816 } 5817 5818 5819 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5820 struct rsp_que *rsp, response_t *pkt) 5821 { 5822 struct abts_resp_from_24xx_fw *entry = 5823 (struct abts_resp_from_24xx_fw *)pkt; 5824 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5825 struct qla_tgt_mgmt_cmd *mcmd; 5826 struct qla_hw_data *ha = vha->hw; 5827 5828 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5829 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5830 ql_dbg(ql_dbg_async, vha, 0xe064, 5831 "qla_target(%d): ABTS Comp without mcmd\n", 5832 vha->vp_idx); 5833 return; 5834 } 5835 5836 if (mcmd) 5837 vha = mcmd->vha; 5838 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5839 5840 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5841 "ABTS_RESP_24XX: compl_status %x\n", 5842 entry->compl_status); 5843 5844 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5845 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5846 le32_to_cpu(entry->error_subcode2) == 0) { 5847 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5848 ha->tgt.tgt_ops->free_mcmd(mcmd); 5849 return; 5850 } 5851 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5852 pkt, mcmd); 5853 } else { 5854 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5855 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5856 vha->vp_idx, entry->compl_status, 5857 entry->error_subcode1, 5858 entry->error_subcode2); 5859 ha->tgt.tgt_ops->free_mcmd(mcmd); 5860 } 5861 } else if (mcmd) { 5862 ha->tgt.tgt_ops->free_mcmd(mcmd); 5863 } 5864 } 5865 5866 /* ha->hardware_lock supposed to be held on entry */ 5867 /* called via callback from qla2xxx */ 5868 static void qlt_response_pkt(struct scsi_qla_host *vha, 5869 struct rsp_que *rsp, response_t *pkt) 5870 { 5871 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5872 5873 if (unlikely(tgt == NULL)) { 5874 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5875 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5876 vha->vp_idx, pkt->entry_type, vha->hw); 5877 return; 5878 } 5879 5880 /* 5881 * In tgt_stop mode we also should allow all requests to pass. 5882 * Otherwise, some commands can stuck. 5883 */ 5884 5885 switch (pkt->entry_type) { 5886 case CTIO_CRC2: 5887 case CTIO_TYPE7: 5888 { 5889 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5890 5891 qlt_do_ctio_completion(vha, rsp, entry->handle, 5892 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5893 entry); 5894 break; 5895 } 5896 5897 case ACCEPT_TGT_IO_TYPE: 5898 { 5899 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5900 int rc; 5901 5902 if (atio->u.isp2x.status != 5903 cpu_to_le16(ATIO_CDB_VALID)) { 5904 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5905 "qla_target(%d): ATIO with error " 5906 "status %x received\n", vha->vp_idx, 5907 le16_to_cpu(atio->u.isp2x.status)); 5908 break; 5909 } 5910 5911 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5912 if (rc != 0) 5913 return; 5914 5915 rc = qlt_handle_cmd_for_atio(vha, atio); 5916 if (unlikely(rc != 0)) { 5917 switch (rc) { 5918 case -ENODEV: 5919 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5920 "qla_target: Unable to send command to target\n"); 5921 break; 5922 case -EBADF: 5923 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5924 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5925 qlt_send_term_exchange(rsp->qpair, NULL, 5926 atio, 1, 0); 5927 break; 5928 case -EBUSY: 5929 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5930 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5931 vha->vp_idx); 5932 qlt_send_busy(rsp->qpair, atio, 5933 tc_sam_status); 5934 break; 5935 default: 5936 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5937 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5938 vha->vp_idx); 5939 qlt_send_busy(rsp->qpair, atio, 5940 qla_sam_status); 5941 break; 5942 } 5943 } 5944 } 5945 break; 5946 5947 case CONTINUE_TGT_IO_TYPE: 5948 { 5949 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5950 5951 qlt_do_ctio_completion(vha, rsp, entry->handle, 5952 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5953 entry); 5954 break; 5955 } 5956 5957 case CTIO_A64_TYPE: 5958 { 5959 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5960 5961 qlt_do_ctio_completion(vha, rsp, entry->handle, 5962 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5963 entry); 5964 break; 5965 } 5966 5967 case IMMED_NOTIFY_TYPE: 5968 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5969 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5970 break; 5971 5972 case NOTIFY_ACK_TYPE: 5973 if (tgt->notify_ack_expected > 0) { 5974 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5975 5976 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5977 "NOTIFY_ACK seq %08x status %x\n", 5978 le16_to_cpu(entry->u.isp2x.seq_id), 5979 le16_to_cpu(entry->u.isp2x.status)); 5980 tgt->notify_ack_expected--; 5981 if (entry->u.isp2x.status != 5982 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5983 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5984 "qla_target(%d): NOTIFY_ACK " 5985 "failed %x\n", vha->vp_idx, 5986 le16_to_cpu(entry->u.isp2x.status)); 5987 } 5988 } else { 5989 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5990 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5991 vha->vp_idx); 5992 } 5993 break; 5994 5995 case ABTS_RECV_24XX: 5996 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5997 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5998 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5999 break; 6000 6001 case ABTS_RESP_24XX: 6002 if (tgt->abts_resp_expected > 0) { 6003 qlt_handle_abts_completion(vha, rsp, pkt); 6004 } else { 6005 ql_dbg(ql_dbg_tgt, vha, 0xe064, 6006 "qla_target(%d): Unexpected ABTS_RESP_24XX " 6007 "received\n", vha->vp_idx); 6008 } 6009 break; 6010 6011 default: 6012 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6013 "qla_target(%d): Received unknown response pkt " 6014 "type %x\n", vha->vp_idx, pkt->entry_type); 6015 break; 6016 } 6017 6018 } 6019 6020 /* 6021 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6022 */ 6023 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6024 uint16_t *mailbox) 6025 { 6026 struct qla_hw_data *ha = vha->hw; 6027 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6028 int login_code; 6029 6030 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6031 return; 6032 6033 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6034 IS_QLA2100(ha)) 6035 return; 6036 /* 6037 * In tgt_stop mode we also should allow all requests to pass. 6038 * Otherwise, some commands can stuck. 6039 */ 6040 6041 6042 switch (code) { 6043 case MBA_RESET: /* Reset */ 6044 case MBA_SYSTEM_ERR: /* System Error */ 6045 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6046 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6047 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6048 "qla_target(%d): System error async event %#x " 6049 "occurred", vha->vp_idx, code); 6050 break; 6051 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6052 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6053 break; 6054 6055 case MBA_LOOP_UP: 6056 { 6057 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6058 "qla_target(%d): Async LOOP_UP occurred " 6059 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6060 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6061 if (tgt->link_reinit_iocb_pending) { 6062 qlt_send_notify_ack(ha->base_qpair, 6063 &tgt->link_reinit_iocb, 6064 0, 0, 0, 0, 0, 0); 6065 tgt->link_reinit_iocb_pending = 0; 6066 } 6067 break; 6068 } 6069 6070 case MBA_LIP_OCCURRED: 6071 case MBA_LOOP_DOWN: 6072 case MBA_LIP_RESET: 6073 case MBA_RSCN_UPDATE: 6074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6075 "qla_target(%d): Async event %#x occurred " 6076 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6077 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6078 break; 6079 6080 case MBA_REJECTED_FCP_CMD: 6081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6082 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6083 vha->vp_idx, 6084 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6085 6086 if (mailbox[3] == 1) { 6087 /* exchange starvation. */ 6088 vha->hw->exch_starvation++; 6089 if (vha->hw->exch_starvation > 5) { 6090 ql_log(ql_log_warn, vha, 0xd03a, 6091 "Exchange starvation-. Resetting RISC\n"); 6092 6093 vha->hw->exch_starvation = 0; 6094 if (IS_P3P_TYPE(vha->hw)) 6095 set_bit(FCOE_CTX_RESET_NEEDED, 6096 &vha->dpc_flags); 6097 else 6098 set_bit(ISP_ABORT_NEEDED, 6099 &vha->dpc_flags); 6100 qla2xxx_wake_dpc(vha); 6101 } 6102 } 6103 break; 6104 6105 case MBA_PORT_UPDATE: 6106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6107 "qla_target(%d): Port update async event %#x " 6108 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6109 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6110 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6111 6112 login_code = mailbox[2]; 6113 if (login_code == 0x4) { 6114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6115 "Async MB 2: Got PLOGI Complete\n"); 6116 vha->hw->exch_starvation = 0; 6117 } else if (login_code == 0x7) 6118 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6119 "Async MB 2: Port Logged Out\n"); 6120 break; 6121 default: 6122 break; 6123 } 6124 6125 } 6126 6127 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6128 uint16_t loop_id) 6129 { 6130 fc_port_t *fcport, *tfcp, *del; 6131 int rc; 6132 unsigned long flags; 6133 u8 newfcport = 0; 6134 6135 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6136 if (!fcport) { 6137 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6138 "qla_target(%d): Allocation of tmp FC port failed", 6139 vha->vp_idx); 6140 return NULL; 6141 } 6142 6143 fcport->loop_id = loop_id; 6144 6145 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6146 if (rc != QLA_SUCCESS) { 6147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6148 "qla_target(%d): Failed to retrieve fcport " 6149 "information -- get_port_database() returned %x " 6150 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6151 kfree(fcport); 6152 return NULL; 6153 } 6154 6155 del = NULL; 6156 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6157 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6158 6159 if (tfcp) { 6160 tfcp->d_id = fcport->d_id; 6161 tfcp->port_type = fcport->port_type; 6162 tfcp->supported_classes = fcport->supported_classes; 6163 tfcp->flags |= fcport->flags; 6164 tfcp->scan_state = QLA_FCPORT_FOUND; 6165 6166 del = fcport; 6167 fcport = tfcp; 6168 } else { 6169 if (vha->hw->current_topology == ISP_CFG_F) 6170 fcport->flags |= FCF_FABRIC_DEVICE; 6171 6172 list_add_tail(&fcport->list, &vha->vp_fcports); 6173 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6174 vha->fcport_count++; 6175 fcport->login_gen++; 6176 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6177 fcport->login_succ = 1; 6178 newfcport = 1; 6179 } 6180 6181 fcport->deleted = 0; 6182 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6183 6184 switch (vha->host->active_mode) { 6185 case MODE_INITIATOR: 6186 case MODE_DUAL: 6187 if (newfcport) { 6188 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6189 qla24xx_sched_upd_fcport(fcport); 6190 } else { 6191 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6192 "%s %d %8phC post gpsc fcp_cnt %d\n", 6193 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6194 qla24xx_post_gpsc_work(vha, fcport); 6195 } 6196 } 6197 break; 6198 6199 case MODE_TARGET: 6200 default: 6201 break; 6202 } 6203 if (del) 6204 qla2x00_free_fcport(del); 6205 6206 return fcport; 6207 } 6208 6209 /* Must be called under tgt_mutex */ 6210 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6211 be_id_t s_id) 6212 { 6213 struct fc_port *sess = NULL; 6214 fc_port_t *fcport = NULL; 6215 int rc, global_resets; 6216 uint16_t loop_id = 0; 6217 6218 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6219 /* 6220 * This is Domain Controller, so it should be 6221 * OK to drop SCSI commands from it. 6222 */ 6223 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6224 "Unable to find initiator with S_ID %x:%x:%x", 6225 s_id.domain, s_id.area, s_id.al_pa); 6226 return NULL; 6227 } 6228 6229 mutex_lock(&vha->vha_tgt.tgt_mutex); 6230 6231 retry: 6232 global_resets = 6233 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6234 6235 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6236 if (rc != 0) { 6237 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6238 6239 ql_log(ql_log_info, vha, 0xf071, 6240 "qla_target(%d): Unable to find " 6241 "initiator with S_ID %x:%x:%x", 6242 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6243 6244 if (rc == -ENOENT) { 6245 qlt_port_logo_t logo; 6246 6247 logo.id = be_to_port_id(s_id); 6248 logo.cmd_count = 1; 6249 qlt_send_first_logo(vha, &logo); 6250 } 6251 6252 return NULL; 6253 } 6254 6255 fcport = qlt_get_port_database(vha, loop_id); 6256 if (!fcport) { 6257 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6258 return NULL; 6259 } 6260 6261 if (global_resets != 6262 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6263 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6264 "qla_target(%d): global reset during session discovery " 6265 "(counter was %d, new %d), retrying", vha->vp_idx, 6266 global_resets, 6267 atomic_read(&vha->vha_tgt. 6268 qla_tgt->tgt_global_resets_count)); 6269 goto retry; 6270 } 6271 6272 sess = qlt_create_sess(vha, fcport, true); 6273 6274 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6275 6276 return sess; 6277 } 6278 6279 static void qlt_abort_work(struct qla_tgt *tgt, 6280 struct qla_tgt_sess_work_param *prm) 6281 { 6282 struct scsi_qla_host *vha = tgt->vha; 6283 struct qla_hw_data *ha = vha->hw; 6284 struct fc_port *sess = NULL; 6285 unsigned long flags = 0, flags2 = 0; 6286 be_id_t s_id; 6287 int rc; 6288 6289 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6290 6291 if (tgt->tgt_stop) 6292 goto out_term2; 6293 6294 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6295 6296 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6297 if (!sess) { 6298 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6299 6300 sess = qlt_make_local_sess(vha, s_id); 6301 /* sess has got an extra creation ref */ 6302 6303 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6304 if (!sess) 6305 goto out_term2; 6306 } else { 6307 if (sess->deleted) { 6308 sess = NULL; 6309 goto out_term2; 6310 } 6311 6312 if (!kref_get_unless_zero(&sess->sess_kref)) { 6313 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6314 "%s: kref_get fail %8phC \n", 6315 __func__, sess->port_name); 6316 sess = NULL; 6317 goto out_term2; 6318 } 6319 } 6320 6321 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6323 6324 ha->tgt.tgt_ops->put_sess(sess); 6325 6326 if (rc != 0) 6327 goto out_term; 6328 return; 6329 6330 out_term2: 6331 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6332 6333 out_term: 6334 spin_lock_irqsave(&ha->hardware_lock, flags); 6335 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6336 FCP_TMF_REJECTED, false); 6337 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6338 } 6339 6340 static void qlt_tmr_work(struct qla_tgt *tgt, 6341 struct qla_tgt_sess_work_param *prm) 6342 { 6343 struct atio_from_isp *a = &prm->tm_iocb2; 6344 struct scsi_qla_host *vha = tgt->vha; 6345 struct qla_hw_data *ha = vha->hw; 6346 struct fc_port *sess; 6347 unsigned long flags; 6348 be_id_t s_id; 6349 int rc; 6350 u64 unpacked_lun; 6351 int fn; 6352 void *iocb; 6353 6354 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6355 6356 if (tgt->tgt_stop) 6357 goto out_term2; 6358 6359 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6360 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6361 if (!sess) { 6362 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6363 6364 sess = qlt_make_local_sess(vha, s_id); 6365 /* sess has got an extra creation ref */ 6366 6367 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6368 if (!sess) 6369 goto out_term2; 6370 } else { 6371 if (sess->deleted) { 6372 goto out_term2; 6373 } 6374 6375 if (!kref_get_unless_zero(&sess->sess_kref)) { 6376 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6377 "%s: kref_get fail %8phC\n", 6378 __func__, sess->port_name); 6379 goto out_term2; 6380 } 6381 } 6382 6383 iocb = a; 6384 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6385 unpacked_lun = 6386 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6387 6388 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6389 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6390 6391 ha->tgt.tgt_ops->put_sess(sess); 6392 6393 if (rc != 0) 6394 goto out_term; 6395 return; 6396 6397 out_term2: 6398 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6399 out_term: 6400 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6401 } 6402 6403 static void qlt_sess_work_fn(struct work_struct *work) 6404 { 6405 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6406 struct scsi_qla_host *vha = tgt->vha; 6407 unsigned long flags; 6408 6409 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6410 6411 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6412 while (!list_empty(&tgt->sess_works_list)) { 6413 struct qla_tgt_sess_work_param *prm = list_entry( 6414 tgt->sess_works_list.next, typeof(*prm), 6415 sess_works_list_entry); 6416 6417 /* 6418 * This work can be scheduled on several CPUs at time, so we 6419 * must delete the entry to eliminate double processing 6420 */ 6421 list_del(&prm->sess_works_list_entry); 6422 6423 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6424 6425 switch (prm->type) { 6426 case QLA_TGT_SESS_WORK_ABORT: 6427 qlt_abort_work(tgt, prm); 6428 break; 6429 case QLA_TGT_SESS_WORK_TM: 6430 qlt_tmr_work(tgt, prm); 6431 break; 6432 default: 6433 BUG_ON(1); 6434 break; 6435 } 6436 6437 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6438 6439 kfree(prm); 6440 } 6441 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6442 } 6443 6444 /* Must be called under tgt_host_action_mutex */ 6445 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6446 { 6447 struct qla_tgt *tgt; 6448 int rc, i; 6449 struct qla_qpair_hint *h; 6450 6451 if (!QLA_TGT_MODE_ENABLED()) 6452 return 0; 6453 6454 if (!IS_TGT_MODE_CAPABLE(ha)) { 6455 ql_log(ql_log_warn, base_vha, 0xe070, 6456 "This adapter does not support target mode.\n"); 6457 return 0; 6458 } 6459 6460 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6461 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6462 6463 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6464 6465 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6466 if (!tgt) { 6467 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6468 "Unable to allocate struct qla_tgt\n"); 6469 return -ENOMEM; 6470 } 6471 6472 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6473 sizeof(struct qla_qpair_hint), 6474 GFP_KERNEL); 6475 if (!tgt->qphints) { 6476 kfree(tgt); 6477 ql_log(ql_log_warn, base_vha, 0x0197, 6478 "Unable to allocate qpair hints.\n"); 6479 return -ENOMEM; 6480 } 6481 6482 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6483 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6484 6485 rc = btree_init64(&tgt->lun_qpair_map); 6486 if (rc) { 6487 kfree(tgt->qphints); 6488 kfree(tgt); 6489 ql_log(ql_log_info, base_vha, 0x0198, 6490 "Unable to initialize lun_qpair_map btree\n"); 6491 return -EIO; 6492 } 6493 h = &tgt->qphints[0]; 6494 h->qpair = ha->base_qpair; 6495 INIT_LIST_HEAD(&h->hint_elem); 6496 h->cpuid = ha->base_qpair->cpuid; 6497 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6498 6499 for (i = 0; i < ha->max_qpairs; i++) { 6500 unsigned long flags; 6501 6502 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6503 6504 h = &tgt->qphints[i + 1]; 6505 INIT_LIST_HEAD(&h->hint_elem); 6506 if (qpair) { 6507 h->qpair = qpair; 6508 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6509 list_add_tail(&h->hint_elem, &qpair->hints_list); 6510 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6511 h->cpuid = qpair->cpuid; 6512 } 6513 } 6514 6515 tgt->ha = ha; 6516 tgt->vha = base_vha; 6517 init_waitqueue_head(&tgt->waitQ); 6518 INIT_LIST_HEAD(&tgt->del_sess_list); 6519 spin_lock_init(&tgt->sess_work_lock); 6520 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6521 INIT_LIST_HEAD(&tgt->sess_works_list); 6522 atomic_set(&tgt->tgt_global_resets_count, 0); 6523 6524 base_vha->vha_tgt.qla_tgt = tgt; 6525 6526 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6527 "qla_target(%d): using 64 Bit PCI addressing", 6528 base_vha->vp_idx); 6529 /* 3 is reserved */ 6530 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6531 6532 mutex_lock(&qla_tgt_mutex); 6533 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6534 mutex_unlock(&qla_tgt_mutex); 6535 6536 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6537 ha->tgt.tgt_ops->add_target(base_vha); 6538 6539 return 0; 6540 } 6541 6542 /* Must be called under tgt_host_action_mutex */ 6543 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6544 { 6545 if (!vha->vha_tgt.qla_tgt) 6546 return 0; 6547 6548 if (vha->fc_vport) { 6549 qlt_release(vha->vha_tgt.qla_tgt); 6550 return 0; 6551 } 6552 6553 /* free left over qfull cmds */ 6554 qlt_init_term_exchange(vha); 6555 6556 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6557 vha->host_no, ha); 6558 qlt_release(vha->vha_tgt.qla_tgt); 6559 6560 return 0; 6561 } 6562 6563 void qla_remove_hostmap(struct qla_hw_data *ha) 6564 { 6565 struct scsi_qla_host *node; 6566 u32 key = 0; 6567 6568 btree_for_each_safe32(&ha->host_map, key, node) 6569 btree_remove32(&ha->host_map, key); 6570 6571 btree_destroy32(&ha->host_map); 6572 } 6573 6574 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6575 unsigned char *b) 6576 { 6577 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6578 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6579 put_unaligned_be64(wwpn, b); 6580 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6581 } 6582 6583 /** 6584 * qlt_lport_register - register lport with external module 6585 * 6586 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6587 * @phys_wwpn: physical port WWPN 6588 * @npiv_wwpn: NPIV WWPN 6589 * @npiv_wwnn: NPIV WWNN 6590 * @callback: lport initialization callback for tcm_qla2xxx code 6591 */ 6592 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6593 u64 npiv_wwpn, u64 npiv_wwnn, 6594 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6595 { 6596 struct qla_tgt *tgt; 6597 struct scsi_qla_host *vha; 6598 struct qla_hw_data *ha; 6599 struct Scsi_Host *host; 6600 unsigned long flags; 6601 int rc; 6602 u8 b[WWN_SIZE]; 6603 6604 mutex_lock(&qla_tgt_mutex); 6605 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6606 vha = tgt->vha; 6607 ha = vha->hw; 6608 6609 host = vha->host; 6610 if (!host) 6611 continue; 6612 6613 if (!(host->hostt->supported_mode & MODE_TARGET)) 6614 continue; 6615 6616 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6617 continue; 6618 6619 spin_lock_irqsave(&ha->hardware_lock, flags); 6620 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6621 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6622 host->host_no); 6623 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6624 continue; 6625 } 6626 if (tgt->tgt_stop) { 6627 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6628 host->host_no); 6629 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6630 continue; 6631 } 6632 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6633 6634 if (!scsi_host_get(host)) { 6635 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6636 "Unable to scsi_host_get() for" 6637 " qla2xxx scsi_host\n"); 6638 continue; 6639 } 6640 qlt_lport_dump(vha, phys_wwpn, b); 6641 6642 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6643 scsi_host_put(host); 6644 continue; 6645 } 6646 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6647 if (rc != 0) 6648 scsi_host_put(host); 6649 6650 mutex_unlock(&qla_tgt_mutex); 6651 return rc; 6652 } 6653 mutex_unlock(&qla_tgt_mutex); 6654 6655 return -ENODEV; 6656 } 6657 EXPORT_SYMBOL(qlt_lport_register); 6658 6659 /** 6660 * qlt_lport_deregister - Degister lport 6661 * 6662 * @vha: Registered scsi_qla_host pointer 6663 */ 6664 void qlt_lport_deregister(struct scsi_qla_host *vha) 6665 { 6666 struct qla_hw_data *ha = vha->hw; 6667 struct Scsi_Host *sh = vha->host; 6668 /* 6669 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6670 */ 6671 vha->vha_tgt.target_lport_ptr = NULL; 6672 ha->tgt.tgt_ops = NULL; 6673 /* 6674 * Release the Scsi_Host reference for the underlying qla2xxx host 6675 */ 6676 scsi_host_put(sh); 6677 } 6678 EXPORT_SYMBOL(qlt_lport_deregister); 6679 6680 /* Must be called under HW lock */ 6681 void qlt_set_mode(struct scsi_qla_host *vha) 6682 { 6683 switch (vha->qlini_mode) { 6684 case QLA2XXX_INI_MODE_DISABLED: 6685 case QLA2XXX_INI_MODE_EXCLUSIVE: 6686 vha->host->active_mode = MODE_TARGET; 6687 break; 6688 case QLA2XXX_INI_MODE_ENABLED: 6689 vha->host->active_mode = MODE_INITIATOR; 6690 break; 6691 case QLA2XXX_INI_MODE_DUAL: 6692 vha->host->active_mode = MODE_DUAL; 6693 break; 6694 default: 6695 break; 6696 } 6697 } 6698 6699 /* Must be called under HW lock */ 6700 static void qlt_clear_mode(struct scsi_qla_host *vha) 6701 { 6702 switch (vha->qlini_mode) { 6703 case QLA2XXX_INI_MODE_DISABLED: 6704 vha->host->active_mode = MODE_UNKNOWN; 6705 break; 6706 case QLA2XXX_INI_MODE_EXCLUSIVE: 6707 vha->host->active_mode = MODE_INITIATOR; 6708 break; 6709 case QLA2XXX_INI_MODE_ENABLED: 6710 case QLA2XXX_INI_MODE_DUAL: 6711 vha->host->active_mode = MODE_INITIATOR; 6712 break; 6713 default: 6714 break; 6715 } 6716 } 6717 6718 /* 6719 * qla_tgt_enable_vha - NO LOCK HELD 6720 * 6721 * host_reset, bring up w/ Target Mode Enabled 6722 */ 6723 void 6724 qlt_enable_vha(struct scsi_qla_host *vha) 6725 { 6726 struct qla_hw_data *ha = vha->hw; 6727 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6728 unsigned long flags; 6729 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6730 6731 if (!tgt) { 6732 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6733 "Unable to locate qla_tgt pointer from" 6734 " struct qla_hw_data\n"); 6735 dump_stack(); 6736 return; 6737 } 6738 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6739 return; 6740 6741 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6742 ha->tgt.num_act_qpairs = ha->max_qpairs; 6743 spin_lock_irqsave(&ha->hardware_lock, flags); 6744 tgt->tgt_stopped = 0; 6745 qlt_set_mode(vha); 6746 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6747 6748 mutex_lock(&ha->optrom_mutex); 6749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6750 "%s.\n", __func__); 6751 if (vha->vp_idx) { 6752 qla24xx_disable_vp(vha); 6753 qla24xx_enable_vp(vha); 6754 } else { 6755 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6756 qla2xxx_wake_dpc(base_vha); 6757 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6758 QLA_SUCCESS); 6759 } 6760 mutex_unlock(&ha->optrom_mutex); 6761 } 6762 EXPORT_SYMBOL(qlt_enable_vha); 6763 6764 /* 6765 * qla_tgt_disable_vha - NO LOCK HELD 6766 * 6767 * Disable Target Mode and reset the adapter 6768 */ 6769 static void qlt_disable_vha(struct scsi_qla_host *vha) 6770 { 6771 struct qla_hw_data *ha = vha->hw; 6772 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6773 unsigned long flags; 6774 6775 if (!tgt) { 6776 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6777 "Unable to locate qla_tgt pointer from" 6778 " struct qla_hw_data\n"); 6779 dump_stack(); 6780 return; 6781 } 6782 6783 spin_lock_irqsave(&ha->hardware_lock, flags); 6784 qlt_clear_mode(vha); 6785 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6786 6787 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6788 qla2xxx_wake_dpc(vha); 6789 6790 /* 6791 * We are expecting the offline state. 6792 * QLA_FUNCTION_FAILED means that adapter is offline. 6793 */ 6794 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6795 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6796 "adapter is offline\n"); 6797 } 6798 6799 /* 6800 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6801 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6802 * members. 6803 */ 6804 void 6805 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6806 { 6807 vha->vha_tgt.qla_tgt = NULL; 6808 6809 mutex_init(&vha->vha_tgt.tgt_mutex); 6810 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6811 6812 qlt_clear_mode(vha); 6813 6814 /* 6815 * NOTE: Currently the value is kept the same for <24xx and 6816 * >=24xx ISPs. If it is necessary to change it, 6817 * the check should be added for specific ISPs, 6818 * assigning the value appropriately. 6819 */ 6820 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6821 6822 qlt_add_target(ha, vha); 6823 } 6824 6825 u8 6826 qlt_rff_id(struct scsi_qla_host *vha) 6827 { 6828 u8 fc4_feature = 0; 6829 /* 6830 * FC-4 Feature bit 0 indicates target functionality to the name server. 6831 */ 6832 if (qla_tgt_mode_enabled(vha)) { 6833 fc4_feature = BIT_0; 6834 } else if (qla_ini_mode_enabled(vha)) { 6835 fc4_feature = BIT_1; 6836 } else if (qla_dual_mode_enabled(vha)) 6837 fc4_feature = BIT_0 | BIT_1; 6838 6839 return fc4_feature; 6840 } 6841 6842 /* 6843 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6844 * @ha: HA context 6845 * 6846 * Beginning of ATIO ring has initialization control block already built 6847 * by nvram config routine. 6848 * 6849 * Returns 0 on success. 6850 */ 6851 void 6852 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6853 { 6854 struct qla_hw_data *ha = vha->hw; 6855 uint16_t cnt; 6856 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6857 6858 if (qla_ini_mode_enabled(vha)) 6859 return; 6860 6861 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6862 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6863 pkt++; 6864 } 6865 6866 } 6867 6868 /* 6869 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6870 * @ha: SCSI driver HA context 6871 */ 6872 void 6873 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6874 { 6875 struct qla_hw_data *ha = vha->hw; 6876 struct atio_from_isp *pkt; 6877 int cnt, i; 6878 6879 if (!ha->flags.fw_started) 6880 return; 6881 6882 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6883 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6884 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6885 cnt = pkt->u.raw.entry_count; 6886 6887 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6888 /* 6889 * This packet is corrupted. The header + payload 6890 * can not be trusted. There is no point in passing 6891 * it further up. 6892 */ 6893 ql_log(ql_log_warn, vha, 0xd03c, 6894 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6895 &pkt->u.isp24.fcp_hdr.s_id, 6896 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6897 pkt->u.isp24.exchange_addr, pkt); 6898 6899 adjust_corrupted_atio(pkt); 6900 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6901 ha_locked, 0); 6902 } else { 6903 qlt_24xx_atio_pkt_all_vps(vha, 6904 (struct atio_from_isp *)pkt, ha_locked); 6905 } 6906 6907 for (i = 0; i < cnt; i++) { 6908 ha->tgt.atio_ring_index++; 6909 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6910 ha->tgt.atio_ring_index = 0; 6911 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6912 } else 6913 ha->tgt.atio_ring_ptr++; 6914 6915 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6916 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6917 } 6918 wmb(); 6919 } 6920 6921 /* Adjust ring index */ 6922 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6923 } 6924 6925 void 6926 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6927 { 6928 struct qla_hw_data *ha = vha->hw; 6929 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6930 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6931 6932 if (!QLA_TGT_MODE_ENABLED()) 6933 return; 6934 6935 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6936 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6937 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6938 6939 if (ha->flags.msix_enabled) { 6940 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6941 if (IS_QLA2071(ha)) { 6942 /* 4 ports Baker: Enable Interrupt Handshake */ 6943 icb->msix_atio = 0; 6944 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6945 } else { 6946 icb->msix_atio = cpu_to_le16(msix->entry); 6947 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6948 } 6949 ql_dbg(ql_dbg_init, vha, 0xf072, 6950 "Registering ICB vector 0x%x for atio que.\n", 6951 msix->entry); 6952 } 6953 } else { 6954 /* INTx|MSI */ 6955 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6956 icb->msix_atio = 0; 6957 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6958 ql_dbg(ql_dbg_init, vha, 0xf072, 6959 "%s: Use INTx for ATIOQ.\n", __func__); 6960 } 6961 } 6962 } 6963 6964 void 6965 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6966 { 6967 struct qla_hw_data *ha = vha->hw; 6968 u32 tmp; 6969 6970 if (!QLA_TGT_MODE_ENABLED()) 6971 return; 6972 6973 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6974 if (!ha->tgt.saved_set) { 6975 /* We save only once */ 6976 ha->tgt.saved_exchange_count = nv->exchange_count; 6977 ha->tgt.saved_firmware_options_1 = 6978 nv->firmware_options_1; 6979 ha->tgt.saved_firmware_options_2 = 6980 nv->firmware_options_2; 6981 ha->tgt.saved_firmware_options_3 = 6982 nv->firmware_options_3; 6983 ha->tgt.saved_set = 1; 6984 } 6985 6986 if (qla_tgt_mode_enabled(vha)) 6987 nv->exchange_count = cpu_to_le16(0xFFFF); 6988 else /* dual */ 6989 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6990 6991 /* Enable target mode */ 6992 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6993 6994 /* Disable ini mode, if requested */ 6995 if (qla_tgt_mode_enabled(vha)) 6996 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6997 6998 /* Disable Full Login after LIP */ 6999 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7000 /* Enable initial LIP */ 7001 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7002 if (ql2xtgt_tape_enable) 7003 /* Enable FC Tape support */ 7004 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7005 else 7006 /* Disable FC Tape support */ 7007 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7008 7009 /* Disable Full Login after LIP */ 7010 nv->host_p &= cpu_to_le32(~BIT_10); 7011 7012 /* 7013 * clear BIT 15 explicitly as we have seen at least 7014 * a couple of instances where this was set and this 7015 * was causing the firmware to not be initialized. 7016 */ 7017 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7018 /* Enable target PRLI control */ 7019 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7020 7021 if (IS_QLA25XX(ha)) { 7022 /* Change Loop-prefer to Pt-Pt */ 7023 tmp = ~(BIT_4|BIT_5|BIT_6); 7024 nv->firmware_options_2 &= cpu_to_le32(tmp); 7025 tmp = P2P << 4; 7026 nv->firmware_options_2 |= cpu_to_le32(tmp); 7027 } 7028 } else { 7029 if (ha->tgt.saved_set) { 7030 nv->exchange_count = ha->tgt.saved_exchange_count; 7031 nv->firmware_options_1 = 7032 ha->tgt.saved_firmware_options_1; 7033 nv->firmware_options_2 = 7034 ha->tgt.saved_firmware_options_2; 7035 nv->firmware_options_3 = 7036 ha->tgt.saved_firmware_options_3; 7037 } 7038 return; 7039 } 7040 7041 if (ha->base_qpair->enable_class_2) { 7042 if (vha->flags.init_done) 7043 fc_host_supported_classes(vha->host) = 7044 FC_COS_CLASS2 | FC_COS_CLASS3; 7045 7046 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7047 } else { 7048 if (vha->flags.init_done) 7049 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7050 7051 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7052 } 7053 } 7054 7055 void 7056 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7057 struct init_cb_24xx *icb) 7058 { 7059 struct qla_hw_data *ha = vha->hw; 7060 7061 if (!QLA_TGT_MODE_ENABLED()) 7062 return; 7063 7064 if (ha->tgt.node_name_set) { 7065 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7066 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7067 } 7068 } 7069 7070 void 7071 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7072 { 7073 struct qla_hw_data *ha = vha->hw; 7074 u32 tmp; 7075 7076 if (!QLA_TGT_MODE_ENABLED()) 7077 return; 7078 7079 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7080 if (!ha->tgt.saved_set) { 7081 /* We save only once */ 7082 ha->tgt.saved_exchange_count = nv->exchange_count; 7083 ha->tgt.saved_firmware_options_1 = 7084 nv->firmware_options_1; 7085 ha->tgt.saved_firmware_options_2 = 7086 nv->firmware_options_2; 7087 ha->tgt.saved_firmware_options_3 = 7088 nv->firmware_options_3; 7089 ha->tgt.saved_set = 1; 7090 } 7091 7092 if (qla_tgt_mode_enabled(vha)) 7093 nv->exchange_count = cpu_to_le16(0xFFFF); 7094 else /* dual */ 7095 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7096 7097 /* Enable target mode */ 7098 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7099 7100 /* Disable ini mode, if requested */ 7101 if (qla_tgt_mode_enabled(vha)) 7102 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7103 /* Disable Full Login after LIP */ 7104 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7105 /* Enable initial LIP */ 7106 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7107 /* 7108 * clear BIT 15 explicitly as we have seen at 7109 * least a couple of instances where this was set 7110 * and this was causing the firmware to not be 7111 * initialized. 7112 */ 7113 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7114 if (ql2xtgt_tape_enable) 7115 /* Enable FC tape support */ 7116 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7117 else 7118 /* Disable FC tape support */ 7119 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7120 7121 /* Disable Full Login after LIP */ 7122 nv->host_p &= cpu_to_le32(~BIT_10); 7123 /* Enable target PRLI control */ 7124 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7125 7126 /* Change Loop-prefer to Pt-Pt */ 7127 tmp = ~(BIT_4|BIT_5|BIT_6); 7128 nv->firmware_options_2 &= cpu_to_le32(tmp); 7129 tmp = P2P << 4; 7130 nv->firmware_options_2 |= cpu_to_le32(tmp); 7131 } else { 7132 if (ha->tgt.saved_set) { 7133 nv->exchange_count = ha->tgt.saved_exchange_count; 7134 nv->firmware_options_1 = 7135 ha->tgt.saved_firmware_options_1; 7136 nv->firmware_options_2 = 7137 ha->tgt.saved_firmware_options_2; 7138 nv->firmware_options_3 = 7139 ha->tgt.saved_firmware_options_3; 7140 } 7141 return; 7142 } 7143 7144 if (ha->base_qpair->enable_class_2) { 7145 if (vha->flags.init_done) 7146 fc_host_supported_classes(vha->host) = 7147 FC_COS_CLASS2 | FC_COS_CLASS3; 7148 7149 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7150 } else { 7151 if (vha->flags.init_done) 7152 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7153 7154 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7155 } 7156 } 7157 7158 void 7159 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7160 struct init_cb_81xx *icb) 7161 { 7162 struct qla_hw_data *ha = vha->hw; 7163 7164 if (!QLA_TGT_MODE_ENABLED()) 7165 return; 7166 7167 if (ha->tgt.node_name_set) { 7168 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7169 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7170 } 7171 } 7172 7173 void 7174 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7175 { 7176 if (!QLA_TGT_MODE_ENABLED()) 7177 return; 7178 7179 ha->msix_count += 1; /* For ATIO Q */ 7180 } 7181 7182 7183 void 7184 qlt_modify_vp_config(struct scsi_qla_host *vha, 7185 struct vp_config_entry_24xx *vpmod) 7186 { 7187 /* enable target mode. Bit5 = 1 => disable */ 7188 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7189 vpmod->options_idx1 &= ~BIT_5; 7190 7191 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7192 if (qla_tgt_mode_enabled(vha)) 7193 vpmod->options_idx1 &= ~BIT_4; 7194 } 7195 7196 void 7197 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7198 { 7199 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7200 if (!QLA_TGT_MODE_ENABLED()) 7201 return; 7202 7203 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7204 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7205 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7206 } else { 7207 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7208 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7209 } 7210 7211 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7212 7213 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7214 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7215 qlt_unknown_atio_work_fn); 7216 7217 qlt_clear_mode(base_vha); 7218 7219 qlt_update_vp_map(base_vha, SET_VP_IDX); 7220 } 7221 7222 irqreturn_t 7223 qla83xx_msix_atio_q(int irq, void *dev_id) 7224 { 7225 struct rsp_que *rsp; 7226 scsi_qla_host_t *vha; 7227 struct qla_hw_data *ha; 7228 unsigned long flags; 7229 7230 rsp = (struct rsp_que *) dev_id; 7231 ha = rsp->hw; 7232 vha = pci_get_drvdata(ha->pdev); 7233 7234 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7235 7236 qlt_24xx_process_atio_queue(vha, 0); 7237 7238 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7239 7240 return IRQ_HANDLED; 7241 } 7242 7243 static void 7244 qlt_handle_abts_recv_work(struct work_struct *work) 7245 { 7246 struct qla_tgt_sess_op *op = container_of(work, 7247 struct qla_tgt_sess_op, work); 7248 scsi_qla_host_t *vha = op->vha; 7249 struct qla_hw_data *ha = vha->hw; 7250 unsigned long flags; 7251 7252 if (qla2x00_reset_active(vha) || 7253 (op->chip_reset != ha->base_qpair->chip_reset)) 7254 return; 7255 7256 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7257 qlt_24xx_process_atio_queue(vha, 0); 7258 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7259 7260 spin_lock_irqsave(&ha->hardware_lock, flags); 7261 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7262 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7263 7264 kfree(op); 7265 } 7266 7267 void 7268 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7269 response_t *pkt) 7270 { 7271 struct qla_tgt_sess_op *op; 7272 7273 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7274 7275 if (!op) { 7276 /* do not reach for ATIO queue here. This is best effort err 7277 * recovery at this point. 7278 */ 7279 qlt_response_pkt_all_vps(vha, rsp, pkt); 7280 return; 7281 } 7282 7283 memcpy(&op->atio, pkt, sizeof(*pkt)); 7284 op->vha = vha; 7285 op->chip_reset = vha->hw->base_qpair->chip_reset; 7286 op->rsp = rsp; 7287 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7288 queue_work(qla_tgt_wq, &op->work); 7289 return; 7290 } 7291 7292 int 7293 qlt_mem_alloc(struct qla_hw_data *ha) 7294 { 7295 if (!QLA_TGT_MODE_ENABLED()) 7296 return 0; 7297 7298 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7299 sizeof(struct qla_tgt_vp_map), 7300 GFP_KERNEL); 7301 if (!ha->tgt.tgt_vp_map) 7302 return -ENOMEM; 7303 7304 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7305 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7306 &ha->tgt.atio_dma, GFP_KERNEL); 7307 if (!ha->tgt.atio_ring) { 7308 kfree(ha->tgt.tgt_vp_map); 7309 return -ENOMEM; 7310 } 7311 return 0; 7312 } 7313 7314 void 7315 qlt_mem_free(struct qla_hw_data *ha) 7316 { 7317 if (!QLA_TGT_MODE_ENABLED()) 7318 return; 7319 7320 if (ha->tgt.atio_ring) { 7321 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7322 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7323 ha->tgt.atio_dma); 7324 } 7325 ha->tgt.atio_ring = NULL; 7326 ha->tgt.atio_dma = 0; 7327 kfree(ha->tgt.tgt_vp_map); 7328 ha->tgt.tgt_vp_map = NULL; 7329 } 7330 7331 /* vport_slock to be held by the caller */ 7332 void 7333 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7334 { 7335 void *slot; 7336 u32 key; 7337 int rc; 7338 7339 key = vha->d_id.b24; 7340 7341 switch (cmd) { 7342 case SET_VP_IDX: 7343 if (!QLA_TGT_MODE_ENABLED()) 7344 return; 7345 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7346 break; 7347 case SET_AL_PA: 7348 slot = btree_lookup32(&vha->hw->host_map, key); 7349 if (!slot) { 7350 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7351 "Save vha in host_map %p %06x\n", vha, key); 7352 rc = btree_insert32(&vha->hw->host_map, 7353 key, vha, GFP_ATOMIC); 7354 if (rc) 7355 ql_log(ql_log_info, vha, 0xd03e, 7356 "Unable to insert s_id into host_map: %06x\n", 7357 key); 7358 return; 7359 } 7360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7361 "replace existing vha in host_map %p %06x\n", vha, key); 7362 btree_update32(&vha->hw->host_map, key, vha); 7363 break; 7364 case RESET_VP_IDX: 7365 if (!QLA_TGT_MODE_ENABLED()) 7366 return; 7367 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7368 break; 7369 case RESET_AL_PA: 7370 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7371 "clear vha in host_map %p %06x\n", vha, key); 7372 slot = btree_lookup32(&vha->hw->host_map, key); 7373 if (slot) 7374 btree_remove32(&vha->hw->host_map, key); 7375 vha->d_id.b24 = 0; 7376 break; 7377 } 7378 } 7379 7380 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7381 { 7382 7383 if (!vha->d_id.b24) { 7384 vha->d_id = id; 7385 qlt_update_vp_map(vha, SET_AL_PA); 7386 } else if (vha->d_id.b24 != id.b24) { 7387 qlt_update_vp_map(vha, RESET_AL_PA); 7388 vha->d_id = id; 7389 qlt_update_vp_map(vha, SET_AL_PA); 7390 } 7391 } 7392 7393 static int __init qlt_parse_ini_mode(void) 7394 { 7395 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7396 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7397 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7398 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7399 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7400 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7401 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7402 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7403 else 7404 return false; 7405 7406 return true; 7407 } 7408 7409 int __init qlt_init(void) 7410 { 7411 int ret; 7412 7413 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7414 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7415 7416 if (!qlt_parse_ini_mode()) { 7417 ql_log(ql_log_fatal, NULL, 0xe06b, 7418 "qlt_parse_ini_mode() failed\n"); 7419 return -EINVAL; 7420 } 7421 7422 if (!QLA_TGT_MODE_ENABLED()) 7423 return 0; 7424 7425 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7426 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7427 qla_tgt_mgmt_cmd), 0, NULL); 7428 if (!qla_tgt_mgmt_cmd_cachep) { 7429 ql_log(ql_log_fatal, NULL, 0xd04b, 7430 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7431 return -ENOMEM; 7432 } 7433 7434 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7435 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7436 0, NULL); 7437 7438 if (!qla_tgt_plogi_cachep) { 7439 ql_log(ql_log_fatal, NULL, 0xe06d, 7440 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7441 ret = -ENOMEM; 7442 goto out_mgmt_cmd_cachep; 7443 } 7444 7445 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7446 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7447 if (!qla_tgt_mgmt_cmd_mempool) { 7448 ql_log(ql_log_fatal, NULL, 0xe06e, 7449 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7450 ret = -ENOMEM; 7451 goto out_plogi_cachep; 7452 } 7453 7454 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7455 if (!qla_tgt_wq) { 7456 ql_log(ql_log_fatal, NULL, 0xe06f, 7457 "alloc_workqueue for qla_tgt_wq failed\n"); 7458 ret = -ENOMEM; 7459 goto out_cmd_mempool; 7460 } 7461 /* 7462 * Return 1 to signal that initiator-mode is being disabled 7463 */ 7464 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7465 7466 out_cmd_mempool: 7467 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7468 out_plogi_cachep: 7469 kmem_cache_destroy(qla_tgt_plogi_cachep); 7470 out_mgmt_cmd_cachep: 7471 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7472 return ret; 7473 } 7474 7475 void qlt_exit(void) 7476 { 7477 if (!QLA_TGT_MODE_ENABLED()) 7478 return; 7479 7480 destroy_workqueue(qla_tgt_wq); 7481 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7482 kmem_cache_destroy(qla_tgt_plogi_cachep); 7483 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7484 } 7485