1 /* 2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 3 * 4 * based on qla2x00t.c code: 5 * 6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 7 * Copyright (C) 2004 - 2005 Leonid Stoljar 8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 9 * Copyright (C) 2006 - 2010 ID7 Ltd. 10 * 11 * Forward port and refactoring to modern qla2xxx and target/configfs 12 * 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation, version 2 18 * of the License. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/types.h> 29 #include <linux/blkdev.h> 30 #include <linux/interrupt.h> 31 #include <linux/pci.h> 32 #include <linux/delay.h> 33 #include <linux/list.h> 34 #include <linux/workqueue.h> 35 #include <asm/unaligned.h> 36 #include <scsi/scsi.h> 37 #include <scsi/scsi_host.h> 38 #include <scsi/scsi_tcq.h> 39 #include <target/target_core_base.h> 40 #include <target/target_core_fabric.h> 41 42 #include "qla_def.h" 43 #include "qla_target.h" 44 45 static int ql2xtgt_tape_enable; 46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 47 MODULE_PARM_DESC(ql2xtgt_tape_enable, 48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 49 50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 51 module_param(qlini_mode, charp, S_IRUGO); 52 MODULE_PARM_DESC(qlini_mode, 53 "Determines when initiator mode will be enabled. Possible values: " 54 "\"exclusive\" - initiator mode will be enabled on load, " 55 "disabled on enabling target mode and then on disabling target mode " 56 "enabled back; " 57 "\"disabled\" - initiator mode will never be enabled; " 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 59 "when ready " 60 "\"enabled\" (default) - initiator mode will always stay enabled."); 61 62 static int ql_dm_tgt_ex_pct = 50; 63 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 64 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 65 "For Dual Mode (qlini_mode=dual), this parameter determines " 66 "the percentage of exchanges/cmds FW will allocate resources " 67 "for Target mode."); 68 69 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 70 71 static int temp_sam_status = SAM_STAT_BUSY; 72 73 /* 74 * From scsi/fc/fc_fcp.h 75 */ 76 enum fcp_resp_rsp_codes { 77 FCP_TMF_CMPL = 0, 78 FCP_DATA_LEN_INVALID = 1, 79 FCP_CMND_FIELDS_INVALID = 2, 80 FCP_DATA_PARAM_MISMATCH = 3, 81 FCP_TMF_REJECTED = 4, 82 FCP_TMF_FAILED = 5, 83 FCP_TMF_INVALID_LUN = 9, 84 }; 85 86 /* 87 * fc_pri_ta from scsi/fc/fc_fcp.h 88 */ 89 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 90 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 91 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 92 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 93 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 94 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 95 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 96 97 /* 98 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 99 * must be called under HW lock and could unlock/lock it inside. 100 * It isn't an issue, since in the current implementation on the time when 101 * those functions are called: 102 * 103 * - Either context is IRQ and only IRQ handler can modify HW data, 104 * including rings related fields, 105 * 106 * - Or access to target mode variables from struct qla_tgt doesn't 107 * cross those functions boundaries, except tgt_stop, which 108 * additionally protected by irq_cmd_count. 109 */ 110 /* Predefs for callbacks handed to qla2xxx LLD */ 111 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 112 struct atio_from_isp *pkt, uint8_t); 113 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); 114 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 115 int fn, void *iocb, int flags); 116 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd 117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 118 static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, 119 struct qla_tgt_cmd *cmd); 120 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 121 struct atio_from_isp *atio, uint16_t status, int qfull); 122 static void qlt_disable_vha(struct scsi_qla_host *vha); 123 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 124 static void qlt_send_notify_ack(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *ntfy, 126 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 127 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 128 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 129 struct imm_ntfy_from_isp *imm, int ha_locked); 130 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 131 fc_port_t *fcport, bool local); 132 void qlt_unreg_sess(struct fc_port *sess); 133 /* 134 * Global Variables 135 */ 136 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 137 static struct kmem_cache *qla_tgt_plogi_cachep; 138 static mempool_t *qla_tgt_mgmt_cmd_mempool; 139 static struct workqueue_struct *qla_tgt_wq; 140 static DEFINE_MUTEX(qla_tgt_mutex); 141 static LIST_HEAD(qla_tgt_glist); 142 143 /* This API intentionally takes dest as a parameter, rather than returning 144 * int value to avoid caller forgetting to issue wmb() after the store */ 145 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 146 { 147 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 148 *dest = atomic_inc_return(&base_vha->generation_tick); 149 /* memory barrier */ 150 wmb(); 151 } 152 153 /* Might release hw lock, then reaquire!! */ 154 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 155 { 156 /* Send marker if required */ 157 if (unlikely(vha->marker_needed != 0)) { 158 int rc = qla2x00_issue_marker(vha, vha_locked); 159 if (rc != QLA_SUCCESS) { 160 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 161 "qla_target(%d): issue_marker() failed\n", 162 vha->vp_idx); 163 } 164 return rc; 165 } 166 return QLA_SUCCESS; 167 } 168 169 static inline 170 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 171 uint8_t *d_id) 172 { 173 struct qla_hw_data *ha = vha->hw; 174 uint8_t vp_idx; 175 176 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0])) 177 return NULL; 178 179 if (vha->d_id.b.al_pa == d_id[2]) 180 return vha; 181 182 BUG_ON(ha->tgt.tgt_vp_map == NULL); 183 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx; 184 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 185 return ha->tgt.tgt_vp_map[vp_idx].vha; 186 187 return NULL; 188 } 189 190 static inline 191 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 192 uint16_t vp_idx) 193 { 194 struct qla_hw_data *ha = vha->hw; 195 196 if (vha->vp_idx == vp_idx) 197 return vha; 198 199 BUG_ON(ha->tgt.tgt_vp_map == NULL); 200 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 201 return ha->tgt.tgt_vp_map[vp_idx].vha; 202 203 return NULL; 204 } 205 206 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 207 { 208 unsigned long flags; 209 210 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 211 212 vha->hw->tgt.num_pend_cmds++; 213 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 214 vha->qla_stats.stat_max_pend_cmds = 215 vha->hw->tgt.num_pend_cmds; 216 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 217 } 218 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 219 { 220 unsigned long flags; 221 222 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 223 vha->hw->tgt.num_pend_cmds--; 224 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 225 } 226 227 228 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 229 struct atio_from_isp *atio, uint8_t ha_locked) 230 { 231 struct qla_tgt_sess_op *u; 232 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 233 unsigned long flags; 234 235 if (tgt->tgt_stop) { 236 ql_dbg(ql_dbg_async, vha, 0xffff, 237 "qla_target(%d): dropping unknown ATIO_TYPE7, " 238 "because tgt is being stopped", vha->vp_idx); 239 goto out_term; 240 } 241 242 u = kzalloc(sizeof(*u), GFP_ATOMIC); 243 if (u == NULL) { 244 ql_dbg(ql_dbg_async, vha, 0xffff, 245 "Alloc of struct unknown_atio (size %zd) failed", sizeof(*u)); 246 /* It should be harmless and on the next retry should work well */ 247 goto out_term; 248 } 249 250 u->vha = vha; 251 memcpy(&u->atio, atio, sizeof(*atio)); 252 INIT_LIST_HEAD(&u->cmd_list); 253 254 spin_lock_irqsave(&vha->cmd_list_lock, flags); 255 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 256 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 257 258 schedule_delayed_work(&vha->unknown_atio_work, 1); 259 260 out: 261 return; 262 263 out_term: 264 qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0); 265 goto out; 266 } 267 268 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 269 uint8_t ha_locked) 270 { 271 struct qla_tgt_sess_op *u, *t; 272 scsi_qla_host_t *host; 273 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 274 unsigned long flags; 275 uint8_t queued = 0; 276 277 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 278 if (u->aborted) { 279 ql_dbg(ql_dbg_async, vha, 0xffff, 280 "Freeing unknown %s %p, because of Abort", 281 "ATIO_TYPE7", u); 282 qlt_send_term_exchange(vha, NULL, &u->atio, 283 ha_locked, 0); 284 goto abort; 285 } 286 287 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 288 if (host != NULL) { 289 ql_dbg(ql_dbg_async, vha, 0xffff, 290 "Requeuing unknown ATIO_TYPE7 %p", u); 291 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 292 } else if (tgt->tgt_stop) { 293 ql_dbg(ql_dbg_async, vha, 0xffff, 294 "Freeing unknown %s %p, because tgt is being stopped", 295 "ATIO_TYPE7", u); 296 qlt_send_term_exchange(vha, NULL, &u->atio, 297 ha_locked, 0); 298 } else { 299 ql_dbg(ql_dbg_async, vha, 0xffff, 300 "u %p, vha %p, host %p, sched again..", u, 301 vha, host); 302 if (!queued) { 303 queued = 1; 304 schedule_delayed_work(&vha->unknown_atio_work, 305 1); 306 } 307 continue; 308 } 309 310 abort: 311 spin_lock_irqsave(&vha->cmd_list_lock, flags); 312 list_del(&u->cmd_list); 313 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 314 kfree(u); 315 } 316 } 317 318 void qlt_unknown_atio_work_fn(struct work_struct *work) 319 { 320 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 321 struct scsi_qla_host, unknown_atio_work); 322 323 qlt_try_to_dequeue_unknown_atios(vha, 0); 324 } 325 326 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 327 struct atio_from_isp *atio, uint8_t ha_locked) 328 { 329 ql_dbg(ql_dbg_tgt, vha, 0xe072, 330 "%s: qla_target(%d): type %x ox_id %04x\n", 331 __func__, vha->vp_idx, atio->u.raw.entry_type, 332 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 333 334 switch (atio->u.raw.entry_type) { 335 case ATIO_TYPE7: 336 { 337 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 338 atio->u.isp24.fcp_hdr.d_id); 339 if (unlikely(NULL == host)) { 340 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 341 "qla_target(%d): Received ATIO_TYPE7 " 342 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 343 atio->u.isp24.fcp_hdr.d_id[0], 344 atio->u.isp24.fcp_hdr.d_id[1], 345 atio->u.isp24.fcp_hdr.d_id[2]); 346 347 348 qlt_queue_unknown_atio(vha, atio, ha_locked); 349 break; 350 } 351 if (unlikely(!list_empty(&vha->unknown_atio_list))) 352 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 353 354 qlt_24xx_atio_pkt(host, atio, ha_locked); 355 break; 356 } 357 358 case IMMED_NOTIFY_TYPE: 359 { 360 struct scsi_qla_host *host = vha; 361 struct imm_ntfy_from_isp *entry = 362 (struct imm_ntfy_from_isp *)atio; 363 364 if ((entry->u.isp24.vp_index != 0xFF) && 365 (entry->u.isp24.nport_handle != 0xFFFF)) { 366 host = qlt_find_host_by_vp_idx(vha, 367 entry->u.isp24.vp_index); 368 if (unlikely(!host)) { 369 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 370 "qla_target(%d): Received " 371 "ATIO (IMMED_NOTIFY_TYPE) " 372 "with unknown vp_index %d\n", 373 vha->vp_idx, entry->u.isp24.vp_index); 374 break; 375 } 376 } 377 qlt_24xx_atio_pkt(host, atio, ha_locked); 378 break; 379 } 380 381 case VP_RPT_ID_IOCB_TYPE: 382 qla24xx_report_id_acquisition(vha, 383 (struct vp_rpt_id_entry_24xx *)atio); 384 break; 385 386 case ABTS_RECV_24XX: 387 { 388 struct abts_recv_from_24xx *entry = 389 (struct abts_recv_from_24xx *)atio; 390 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 391 entry->vp_index); 392 if (unlikely(!host)) { 393 ql_dbg(ql_dbg_tgt, vha, 0xffff, 394 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 395 "received, with unknown vp_index %d\n", 396 vha->vp_idx, entry->vp_index); 397 break; 398 } 399 qlt_response_pkt(host, (response_t *)atio); 400 break; 401 402 } 403 404 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 405 406 default: 407 ql_dbg(ql_dbg_tgt, vha, 0xe040, 408 "qla_target(%d): Received unknown ATIO atio " 409 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 410 break; 411 } 412 413 return false; 414 } 415 416 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt) 417 { 418 switch (pkt->entry_type) { 419 case CTIO_CRC2: 420 ql_dbg(ql_dbg_tgt, vha, 0xe073, 421 "qla_target(%d):%s: CRC2 Response pkt\n", 422 vha->vp_idx, __func__); 423 case CTIO_TYPE7: 424 { 425 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 426 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 427 entry->vp_index); 428 if (unlikely(!host)) { 429 ql_dbg(ql_dbg_tgt, vha, 0xe041, 430 "qla_target(%d): Response pkt (CTIO_TYPE7) " 431 "received, with unknown vp_index %d\n", 432 vha->vp_idx, entry->vp_index); 433 break; 434 } 435 qlt_response_pkt(host, pkt); 436 break; 437 } 438 439 case IMMED_NOTIFY_TYPE: 440 { 441 struct scsi_qla_host *host = vha; 442 struct imm_ntfy_from_isp *entry = 443 (struct imm_ntfy_from_isp *)pkt; 444 445 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 446 if (unlikely(!host)) { 447 ql_dbg(ql_dbg_tgt, vha, 0xe042, 448 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 449 "received, with unknown vp_index %d\n", 450 vha->vp_idx, entry->u.isp24.vp_index); 451 break; 452 } 453 qlt_response_pkt(host, pkt); 454 break; 455 } 456 457 case NOTIFY_ACK_TYPE: 458 { 459 struct scsi_qla_host *host = vha; 460 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 461 462 if (0xFF != entry->u.isp24.vp_index) { 463 host = qlt_find_host_by_vp_idx(vha, 464 entry->u.isp24.vp_index); 465 if (unlikely(!host)) { 466 ql_dbg(ql_dbg_tgt, vha, 0xe043, 467 "qla_target(%d): Response " 468 "pkt (NOTIFY_ACK_TYPE) " 469 "received, with unknown " 470 "vp_index %d\n", vha->vp_idx, 471 entry->u.isp24.vp_index); 472 break; 473 } 474 } 475 qlt_response_pkt(host, pkt); 476 break; 477 } 478 479 case ABTS_RECV_24XX: 480 { 481 struct abts_recv_from_24xx *entry = 482 (struct abts_recv_from_24xx *)pkt; 483 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 484 entry->vp_index); 485 if (unlikely(!host)) { 486 ql_dbg(ql_dbg_tgt, vha, 0xe044, 487 "qla_target(%d): Response pkt " 488 "(ABTS_RECV_24XX) received, with unknown " 489 "vp_index %d\n", vha->vp_idx, entry->vp_index); 490 break; 491 } 492 qlt_response_pkt(host, pkt); 493 break; 494 } 495 496 case ABTS_RESP_24XX: 497 { 498 struct abts_resp_to_24xx *entry = 499 (struct abts_resp_to_24xx *)pkt; 500 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 501 entry->vp_index); 502 if (unlikely(!host)) { 503 ql_dbg(ql_dbg_tgt, vha, 0xe045, 504 "qla_target(%d): Response pkt " 505 "(ABTS_RECV_24XX) received, with unknown " 506 "vp_index %d\n", vha->vp_idx, entry->vp_index); 507 break; 508 } 509 qlt_response_pkt(host, pkt); 510 break; 511 } 512 513 default: 514 qlt_response_pkt(vha, pkt); 515 break; 516 } 517 518 } 519 520 /* 521 * All qlt_plogi_ack_t operations are protected by hardware_lock 522 */ 523 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 524 struct imm_ntfy_from_isp *ntfy, int type) 525 { 526 struct qla_work_evt *e; 527 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 528 if (!e) 529 return QLA_FUNCTION_FAILED; 530 531 e->u.nack.fcport = fcport; 532 e->u.nack.type = type; 533 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 534 return qla2x00_post_work(vha, e); 535 } 536 537 static 538 void qla2x00_async_nack_sp_done(void *s, int res) 539 { 540 struct srb *sp = (struct srb *)s; 541 struct scsi_qla_host *vha = sp->vha; 542 unsigned long flags; 543 544 ql_dbg(ql_dbg_disc, vha, 0xffff, 545 "Async done-%s res %x %8phC type %d\n", 546 sp->name, res, sp->fcport->port_name, sp->type); 547 548 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 549 sp->fcport->flags &= ~FCF_ASYNC_SENT; 550 sp->fcport->chip_reset = vha->hw->chip_reset; 551 552 switch (sp->type) { 553 case SRB_NACK_PLOGI: 554 sp->fcport->login_gen++; 555 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 556 sp->fcport->logout_on_delete = 1; 557 break; 558 559 case SRB_NACK_PRLI: 560 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 561 sp->fcport->deleted = 0; 562 563 if (!sp->fcport->login_succ && 564 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 565 sp->fcport->login_succ = 1; 566 567 vha->fcport_count++; 568 569 if (!IS_IIDMA_CAPABLE(vha->hw) || 570 !vha->hw->flags.gpsc_supported) { 571 ql_dbg(ql_dbg_disc, vha, 0xffff, 572 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 573 __func__, __LINE__, 574 sp->fcport->port_name, 575 vha->fcport_count); 576 577 qla24xx_post_upd_fcport_work(vha, sp->fcport); 578 } else { 579 ql_dbg(ql_dbg_disc, vha, 0xffff, 580 "%s %d %8phC post gpsc fcp_cnt %d\n", 581 __func__, __LINE__, 582 sp->fcport->port_name, 583 vha->fcport_count); 584 585 qla24xx_post_gpsc_work(vha, sp->fcport); 586 } 587 } 588 break; 589 590 case SRB_NACK_LOGO: 591 sp->fcport->login_gen++; 592 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 593 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 594 break; 595 } 596 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 597 598 sp->free(sp); 599 } 600 601 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 602 struct imm_ntfy_from_isp *ntfy, int type) 603 { 604 int rval = QLA_FUNCTION_FAILED; 605 srb_t *sp; 606 char *c = NULL; 607 608 fcport->flags |= FCF_ASYNC_SENT; 609 switch (type) { 610 case SRB_NACK_PLOGI: 611 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 612 c = "PLOGI"; 613 break; 614 case SRB_NACK_PRLI: 615 fcport->fw_login_state = DSC_LS_PRLI_PEND; 616 c = "PRLI"; 617 break; 618 case SRB_NACK_LOGO: 619 fcport->fw_login_state = DSC_LS_LOGO_PEND; 620 c = "LOGO"; 621 break; 622 } 623 624 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 625 if (!sp) 626 goto done; 627 628 sp->type = type; 629 sp->name = "nack"; 630 631 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 632 633 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 634 635 sp->done = qla2x00_async_nack_sp_done; 636 637 rval = qla2x00_start_sp(sp); 638 if (rval != QLA_SUCCESS) 639 goto done_free_sp; 640 641 ql_dbg(ql_dbg_disc, vha, 0xffff, 642 "Async-%s %8phC hndl %x %s\n", 643 sp->name, fcport->port_name, sp->handle, c); 644 645 return rval; 646 647 done_free_sp: 648 sp->free(sp); 649 done: 650 fcport->flags &= ~FCF_ASYNC_SENT; 651 return rval; 652 } 653 654 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 655 { 656 fc_port_t *t; 657 unsigned long flags; 658 659 switch (e->u.nack.type) { 660 case SRB_NACK_PRLI: 661 mutex_lock(&vha->vha_tgt.tgt_mutex); 662 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 663 mutex_unlock(&vha->vha_tgt.tgt_mutex); 664 if (t) { 665 ql_log(ql_log_info, vha, 0xffff, 666 "%s create sess success %p", __func__, t); 667 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 668 /* create sess has an extra kref */ 669 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 670 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 671 } 672 break; 673 } 674 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 675 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); 676 } 677 678 void qla24xx_delete_sess_fn(struct work_struct *work) 679 { 680 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 681 struct qla_hw_data *ha = fcport->vha->hw; 682 unsigned long flags; 683 684 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 685 686 if (fcport->se_sess) { 687 ha->tgt.tgt_ops->shutdown_sess(fcport); 688 ha->tgt.tgt_ops->put_sess(fcport); 689 } else { 690 qlt_unreg_sess(fcport); 691 } 692 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 693 } 694 695 /* 696 * Called from qla2x00_reg_remote_port() 697 */ 698 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 699 { 700 struct qla_hw_data *ha = vha->hw; 701 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 702 struct fc_port *sess = fcport; 703 unsigned long flags; 704 705 if (!vha->hw->tgt.tgt_ops) 706 return; 707 708 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 709 if (tgt->tgt_stop) { 710 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 711 return; 712 } 713 714 if (fcport->disc_state == DSC_DELETE_PEND) { 715 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 716 return; 717 } 718 719 if (!sess->se_sess) { 720 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 721 722 mutex_lock(&vha->vha_tgt.tgt_mutex); 723 sess = qlt_create_sess(vha, fcport, false); 724 mutex_unlock(&vha->vha_tgt.tgt_mutex); 725 726 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 727 } else { 728 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 729 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 730 return; 731 } 732 733 if (!kref_get_unless_zero(&sess->sess_kref)) { 734 ql_dbg(ql_dbg_disc, vha, 0xffff, 735 "%s: kref_get fail sess %8phC \n", 736 __func__, sess->port_name); 737 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 738 return; 739 } 740 741 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 742 "qla_target(%u): %ssession for port %8phC " 743 "(loop ID %d) reappeared\n", vha->vp_idx, 744 sess->local ? "local " : "", sess->port_name, sess->loop_id); 745 746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 747 "Reappeared sess %p\n", sess); 748 749 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 750 fcport->loop_id, 751 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 752 } 753 754 if (sess && sess->local) { 755 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 756 "qla_target(%u): local session for " 757 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 758 fcport->port_name, sess->loop_id); 759 sess->local = 0; 760 } 761 ha->tgt.tgt_ops->put_sess(sess); 762 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 763 } 764 765 /* 766 * This is a zero-base ref-counting solution, since hardware_lock 767 * guarantees that ref_count is not modified concurrently. 768 * Upon successful return content of iocb is undefined 769 */ 770 static struct qlt_plogi_ack_t * 771 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 772 struct imm_ntfy_from_isp *iocb) 773 { 774 struct qlt_plogi_ack_t *pla; 775 776 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 777 if (pla->id.b24 == id->b24) { 778 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 779 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 780 return pla; 781 } 782 } 783 784 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 785 if (!pla) { 786 ql_dbg(ql_dbg_async, vha, 0x5088, 787 "qla_target(%d): Allocation of plogi_ack failed\n", 788 vha->vp_idx); 789 return NULL; 790 } 791 792 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 793 pla->id = *id; 794 list_add_tail(&pla->list, &vha->plogi_ack_list); 795 796 return pla; 797 } 798 799 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 800 struct qlt_plogi_ack_t *pla) 801 { 802 struct imm_ntfy_from_isp *iocb = &pla->iocb; 803 port_id_t port_id; 804 uint16_t loop_id; 805 fc_port_t *fcport = pla->fcport; 806 807 BUG_ON(!pla->ref_count); 808 pla->ref_count--; 809 810 if (pla->ref_count) 811 return; 812 813 ql_dbg(ql_dbg_disc, vha, 0x5089, 814 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 815 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 816 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 817 iocb->u.isp24.port_id[0], 818 le16_to_cpu(iocb->u.isp24.nport_handle), 819 iocb->u.isp24.exchange_address, iocb->ox_id); 820 821 port_id.b.domain = iocb->u.isp24.port_id[2]; 822 port_id.b.area = iocb->u.isp24.port_id[1]; 823 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 824 port_id.b.rsvd_1 = 0; 825 826 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 827 828 fcport->loop_id = loop_id; 829 fcport->d_id = port_id; 830 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 831 832 list_for_each_entry(fcport, &vha->vp_fcports, list) { 833 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 834 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 835 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 836 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 837 } 838 839 list_del(&pla->list); 840 kmem_cache_free(qla_tgt_plogi_cachep, pla); 841 } 842 843 void 844 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 845 struct fc_port *sess, enum qlt_plogi_link_t link) 846 { 847 struct imm_ntfy_from_isp *iocb = &pla->iocb; 848 /* Inc ref_count first because link might already be pointing at pla */ 849 pla->ref_count++; 850 851 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 852 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 853 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 854 sess, link, sess->port_name, 855 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 856 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 857 pla->ref_count, pla, link); 858 859 if (sess->plogi_link[link]) 860 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 861 862 if (link == QLT_PLOGI_LINK_SAME_WWN) 863 pla->fcport = sess; 864 865 sess->plogi_link[link] = pla; 866 } 867 868 typedef struct { 869 /* These fields must be initialized by the caller */ 870 port_id_t id; 871 /* 872 * number of cmds dropped while we were waiting for 873 * initiator to ack LOGO initialize to 1 if LOGO is 874 * triggered by a command, otherwise, to 0 875 */ 876 int cmd_count; 877 878 /* These fields are used by callee */ 879 struct list_head list; 880 } qlt_port_logo_t; 881 882 static void 883 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 884 { 885 qlt_port_logo_t *tmp; 886 int res; 887 888 mutex_lock(&vha->vha_tgt.tgt_mutex); 889 890 list_for_each_entry(tmp, &vha->logo_list, list) { 891 if (tmp->id.b24 == logo->id.b24) { 892 tmp->cmd_count += logo->cmd_count; 893 mutex_unlock(&vha->vha_tgt.tgt_mutex); 894 return; 895 } 896 } 897 898 list_add_tail(&logo->list, &vha->logo_list); 899 900 mutex_unlock(&vha->vha_tgt.tgt_mutex); 901 902 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 903 904 mutex_lock(&vha->vha_tgt.tgt_mutex); 905 list_del(&logo->list); 906 mutex_unlock(&vha->vha_tgt.tgt_mutex); 907 908 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 909 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 910 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 911 logo->cmd_count, res); 912 } 913 914 static void qlt_free_session_done(struct work_struct *work) 915 { 916 struct fc_port *sess = container_of(work, struct fc_port, 917 free_work); 918 struct qla_tgt *tgt = sess->tgt; 919 struct scsi_qla_host *vha = sess->vha; 920 struct qla_hw_data *ha = vha->hw; 921 unsigned long flags; 922 bool logout_started = false; 923 struct event_arg ea; 924 scsi_qla_host_t *base_vha; 925 926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 927 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 928 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 929 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 930 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 931 sess->logout_on_delete, sess->keep_nport_handle, 932 sess->send_els_logo); 933 934 935 if (!IS_SW_RESV_ADDR(sess->d_id)) { 936 if (sess->send_els_logo) { 937 qlt_port_logo_t logo; 938 939 logo.id = sess->d_id; 940 logo.cmd_count = 0; 941 qlt_send_first_logo(vha, &logo); 942 } 943 944 if (sess->logout_on_delete) { 945 int rc; 946 947 rc = qla2x00_post_async_logout_work(vha, sess, NULL); 948 if (rc != QLA_SUCCESS) 949 ql_log(ql_log_warn, vha, 0xf085, 950 "Schedule logo failed sess %p rc %d\n", 951 sess, rc); 952 else 953 logout_started = true; 954 } 955 } 956 957 /* 958 * Release the target session for FC Nexus from fabric module code. 959 */ 960 if (sess->se_sess != NULL) 961 ha->tgt.tgt_ops->free_session(sess); 962 963 if (logout_started) { 964 bool traced = false; 965 966 while (!ACCESS_ONCE(sess->logout_completed)) { 967 if (!traced) { 968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 969 "%s: waiting for sess %p logout\n", 970 __func__, sess); 971 traced = true; 972 } 973 msleep(100); 974 } 975 976 ql_dbg(ql_dbg_disc, vha, 0xf087, 977 "%s: sess %p logout completed\n",__func__, sess); 978 } 979 980 if (sess->logo_ack_needed) { 981 sess->logo_ack_needed = 0; 982 qla24xx_async_notify_ack(vha, sess, 983 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 984 } 985 986 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 987 if (sess->se_sess) { 988 sess->se_sess = NULL; 989 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 990 tgt->sess_count--; 991 } 992 993 sess->disc_state = DSC_DELETED; 994 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 995 sess->deleted = QLA_SESS_DELETED; 996 sess->login_retry = vha->hw->login_retry_count; 997 998 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 999 vha->fcport_count--; 1000 sess->login_succ = 0; 1001 } 1002 1003 if (sess->chip_reset != sess->vha->hw->chip_reset) 1004 qla2x00_clear_loop_id(sess); 1005 1006 if (sess->conflict) { 1007 sess->conflict->login_pause = 0; 1008 sess->conflict = NULL; 1009 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1010 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1011 } 1012 1013 { 1014 struct qlt_plogi_ack_t *own = 1015 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1016 struct qlt_plogi_ack_t *con = 1017 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1018 struct imm_ntfy_from_isp *iocb; 1019 1020 if (con) { 1021 iocb = &con->iocb; 1022 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1023 "se_sess %p / sess %p port %8phC is gone," 1024 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1025 sess->se_sess, sess, sess->port_name, 1026 own ? "releasing own PLOGI" : "no own PLOGI pending", 1027 own ? own->ref_count : -1, 1028 iocb->u.isp24.port_name, con->ref_count); 1029 qlt_plogi_ack_unref(vha, con); 1030 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1031 } else { 1032 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1033 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1034 sess->se_sess, sess, sess->port_name, 1035 own ? "releasing own PLOGI" : 1036 "no own PLOGI pending", 1037 own ? own->ref_count : -1); 1038 } 1039 1040 if (own) { 1041 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1042 qlt_plogi_ack_unref(vha, own); 1043 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1044 } 1045 } 1046 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1047 1048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1049 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1050 sess, sess->port_name, vha->fcport_count); 1051 1052 if (tgt && (tgt->sess_count == 0)) 1053 wake_up_all(&tgt->waitQ); 1054 1055 if (vha->fcport_count == 0) 1056 wake_up_all(&vha->fcport_waitQ); 1057 1058 base_vha = pci_get_drvdata(ha->pdev); 1059 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1060 return; 1061 1062 if (!tgt || !tgt->tgt_stop) { 1063 memset(&ea, 0, sizeof(ea)); 1064 ea.event = FCME_DELETE_DONE; 1065 ea.fcport = sess; 1066 qla2x00_fcport_event_handler(vha, &ea); 1067 } 1068 } 1069 1070 /* ha->tgt.sess_lock supposed to be held on entry */ 1071 void qlt_unreg_sess(struct fc_port *sess) 1072 { 1073 struct scsi_qla_host *vha = sess->vha; 1074 1075 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1076 "%s sess %p for deletion %8phC\n", 1077 __func__, sess, sess->port_name); 1078 1079 if (sess->se_sess) 1080 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1081 1082 qla2x00_mark_device_lost(vha, sess, 1, 1); 1083 1084 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1085 sess->disc_state = DSC_DELETE_PEND; 1086 sess->last_rscn_gen = sess->rscn_gen; 1087 sess->last_login_gen = sess->login_gen; 1088 1089 INIT_WORK(&sess->free_work, qlt_free_session_done); 1090 schedule_work(&sess->free_work); 1091 } 1092 EXPORT_SYMBOL(qlt_unreg_sess); 1093 1094 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1095 { 1096 struct qla_hw_data *ha = vha->hw; 1097 struct fc_port *sess = NULL; 1098 uint16_t loop_id; 1099 int res = 0; 1100 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1101 unsigned long flags; 1102 1103 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1104 if (loop_id == 0xFFFF) { 1105 /* Global event */ 1106 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1107 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1108 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1109 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1110 } else { 1111 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1112 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1113 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1114 } 1115 1116 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1117 "Using sess for qla_tgt_reset: %p\n", sess); 1118 if (!sess) { 1119 res = -ESRCH; 1120 return res; 1121 } 1122 1123 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1124 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1125 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1126 mcmd, loop_id); 1127 1128 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1129 } 1130 1131 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1132 { 1133 if (sess->chip_reset != sess->vha->hw->chip_reset) { 1134 sess->logout_on_delete = 0; 1135 sess->logo_ack_needed = 0; 1136 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1137 sess->scan_state = 0; 1138 } 1139 } 1140 1141 /* ha->tgt.sess_lock supposed to be held on entry */ 1142 void qlt_schedule_sess_for_deletion(struct fc_port *sess, 1143 bool immediate) 1144 { 1145 struct qla_tgt *tgt = sess->tgt; 1146 1147 if (sess->disc_state == DSC_DELETE_PEND) 1148 return; 1149 1150 if (sess->disc_state == DSC_DELETED) { 1151 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1152 wake_up_all(&tgt->waitQ); 1153 if (sess->vha->fcport_count == 0) 1154 wake_up_all(&sess->vha->fcport_waitQ); 1155 1156 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1157 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1158 return; 1159 } 1160 1161 sess->disc_state = DSC_DELETE_PEND; 1162 1163 if (sess->deleted == QLA_SESS_DELETED) 1164 sess->logout_on_delete = 0; 1165 1166 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1167 qla24xx_chk_fcp_state(sess); 1168 1169 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1170 "Scheduling sess %p for deletion\n", sess); 1171 1172 schedule_work(&sess->del_work); 1173 } 1174 1175 void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess) 1176 { 1177 unsigned long flags; 1178 struct qla_hw_data *ha = sess->vha->hw; 1179 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1180 qlt_schedule_sess_for_deletion(sess, 1); 1181 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1182 } 1183 1184 /* ha->tgt.sess_lock supposed to be held on entry */ 1185 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1186 { 1187 struct fc_port *sess; 1188 scsi_qla_host_t *vha = tgt->vha; 1189 1190 list_for_each_entry(sess, &vha->vp_fcports, list) { 1191 if (sess->se_sess) 1192 qlt_schedule_sess_for_deletion(sess, 1); 1193 } 1194 1195 /* At this point tgt could be already dead */ 1196 } 1197 1198 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1199 uint16_t *loop_id) 1200 { 1201 struct qla_hw_data *ha = vha->hw; 1202 dma_addr_t gid_list_dma; 1203 struct gid_list_info *gid_list; 1204 char *id_iter; 1205 int res, rc, i; 1206 uint16_t entries; 1207 1208 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1209 &gid_list_dma, GFP_KERNEL); 1210 if (!gid_list) { 1211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1212 "qla_target(%d): DMA Alloc failed of %u\n", 1213 vha->vp_idx, qla2x00_gid_list_size(ha)); 1214 return -ENOMEM; 1215 } 1216 1217 /* Get list of logged in devices */ 1218 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries); 1219 if (rc != QLA_SUCCESS) { 1220 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1221 "qla_target(%d): get_id_list() failed: %x\n", 1222 vha->vp_idx, rc); 1223 res = -EBUSY; 1224 goto out_free_id_list; 1225 } 1226 1227 id_iter = (char *)gid_list; 1228 res = -ENOENT; 1229 for (i = 0; i < entries; i++) { 1230 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1231 if ((gid->al_pa == s_id[2]) && 1232 (gid->area == s_id[1]) && 1233 (gid->domain == s_id[0])) { 1234 *loop_id = le16_to_cpu(gid->loop_id); 1235 res = 0; 1236 break; 1237 } 1238 id_iter += ha->gid_list_info_size; 1239 } 1240 1241 out_free_id_list: 1242 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1243 gid_list, gid_list_dma); 1244 return res; 1245 } 1246 1247 /* 1248 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1249 * Caller must put it. 1250 */ 1251 static struct fc_port *qlt_create_sess( 1252 struct scsi_qla_host *vha, 1253 fc_port_t *fcport, 1254 bool local) 1255 { 1256 struct qla_hw_data *ha = vha->hw; 1257 struct fc_port *sess = fcport; 1258 unsigned long flags; 1259 1260 if (vha->vha_tgt.qla_tgt->tgt_stop) 1261 return NULL; 1262 1263 if (fcport->se_sess) { 1264 if (!kref_get_unless_zero(&sess->sess_kref)) { 1265 ql_dbg(ql_dbg_disc, vha, 0xffff, 1266 "%s: kref_get_unless_zero failed for %8phC\n", 1267 __func__, sess->port_name); 1268 return NULL; 1269 } 1270 return fcport; 1271 } 1272 sess->tgt = vha->vha_tgt.qla_tgt; 1273 sess->local = local; 1274 1275 /* 1276 * Under normal circumstances we want to logout from firmware when 1277 * session eventually ends and release corresponding nport handle. 1278 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1279 * code will adjust these flags as necessary. 1280 */ 1281 sess->logout_on_delete = 1; 1282 sess->keep_nport_handle = 0; 1283 sess->logout_completed = 0; 1284 1285 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1286 &fcport->port_name[0], sess) < 0) { 1287 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 1288 "(%d) %8phC check_initiator_node_acl failed\n", 1289 vha->vp_idx, fcport->port_name); 1290 return NULL; 1291 } else { 1292 kref_init(&fcport->sess_kref); 1293 /* 1294 * Take an extra reference to ->sess_kref here to handle 1295 * fc_port access across ->tgt.sess_lock reaquire. 1296 */ 1297 if (!kref_get_unless_zero(&sess->sess_kref)) { 1298 ql_dbg(ql_dbg_disc, vha, 0xffff, 1299 "%s: kref_get_unless_zero failed for %8phC\n", 1300 __func__, sess->port_name); 1301 return NULL; 1302 } 1303 1304 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1305 if (!IS_SW_RESV_ADDR(sess->d_id)) 1306 vha->vha_tgt.qla_tgt->sess_count++; 1307 1308 qlt_do_generation_tick(vha, &sess->generation); 1309 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1310 } 1311 1312 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1313 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1314 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1315 vha->vha_tgt.qla_tgt->sess_count); 1316 1317 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1318 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1319 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1320 vha->vp_idx, local ? "local " : "", fcport->port_name, 1321 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1322 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1323 1324 return sess; 1325 } 1326 1327 /* 1328 * max_gen - specifies maximum session generation 1329 * at which this deletion requestion is still valid 1330 */ 1331 void 1332 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1333 { 1334 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1335 struct fc_port *sess = fcport; 1336 unsigned long flags; 1337 1338 if (!vha->hw->tgt.tgt_ops) 1339 return; 1340 1341 if (!tgt) 1342 return; 1343 1344 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1345 if (tgt->tgt_stop) { 1346 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1347 return; 1348 } 1349 if (!sess->se_sess) { 1350 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1351 return; 1352 } 1353 1354 if (max_gen - sess->generation < 0) { 1355 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1356 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1357 "Ignoring stale deletion request for se_sess %p / sess %p" 1358 " for port %8phC, req_gen %d, sess_gen %d\n", 1359 sess->se_sess, sess, sess->port_name, max_gen, 1360 sess->generation); 1361 return; 1362 } 1363 1364 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1365 1366 sess->local = 1; 1367 qlt_schedule_sess_for_deletion(sess, false); 1368 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1369 } 1370 1371 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1372 { 1373 struct qla_hw_data *ha = tgt->ha; 1374 unsigned long flags; 1375 int res; 1376 /* 1377 * We need to protect against race, when tgt is freed before or 1378 * inside wake_up() 1379 */ 1380 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1381 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1382 "tgt %p, sess_count=%d\n", 1383 tgt, tgt->sess_count); 1384 res = (tgt->sess_count == 0); 1385 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1386 1387 return res; 1388 } 1389 1390 /* Called by tcm_qla2xxx configfs code */ 1391 int qlt_stop_phase1(struct qla_tgt *tgt) 1392 { 1393 struct scsi_qla_host *vha = tgt->vha; 1394 struct qla_hw_data *ha = tgt->ha; 1395 unsigned long flags; 1396 1397 mutex_lock(&qla_tgt_mutex); 1398 if (!vha->fc_vport) { 1399 struct Scsi_Host *sh = vha->host; 1400 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 1401 bool npiv_vports; 1402 1403 spin_lock_irqsave(sh->host_lock, flags); 1404 npiv_vports = (fc_host->npiv_vports_inuse); 1405 spin_unlock_irqrestore(sh->host_lock, flags); 1406 1407 if (npiv_vports) { 1408 mutex_unlock(&qla_tgt_mutex); 1409 return -EPERM; 1410 } 1411 } 1412 if (tgt->tgt_stop || tgt->tgt_stopped) { 1413 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1414 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1415 mutex_unlock(&qla_tgt_mutex); 1416 return -EPERM; 1417 } 1418 1419 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1420 vha->host_no, vha); 1421 /* 1422 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1423 * Lock is needed, because we still can get an incoming packet. 1424 */ 1425 mutex_lock(&vha->vha_tgt.tgt_mutex); 1426 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1427 tgt->tgt_stop = 1; 1428 qlt_clear_tgt_db(tgt); 1429 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1430 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1431 mutex_unlock(&qla_tgt_mutex); 1432 1433 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1434 "Waiting for sess works (tgt %p)", tgt); 1435 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1436 while (!list_empty(&tgt->sess_works_list)) { 1437 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1438 flush_scheduled_work(); 1439 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1440 } 1441 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1442 1443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1444 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1445 1446 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1447 1448 /* Big hammer */ 1449 if (!ha->flags.host_shutting_down && 1450 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1451 qlt_disable_vha(vha); 1452 1453 /* Wait for sessions to clear out (just in case) */ 1454 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1455 return 0; 1456 } 1457 EXPORT_SYMBOL(qlt_stop_phase1); 1458 1459 /* Called by tcm_qla2xxx configfs code */ 1460 void qlt_stop_phase2(struct qla_tgt *tgt) 1461 { 1462 struct qla_hw_data *ha = tgt->ha; 1463 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1464 unsigned long flags; 1465 1466 if (tgt->tgt_stopped) { 1467 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1468 "Already in tgt->tgt_stopped state\n"); 1469 dump_stack(); 1470 return; 1471 } 1472 1473 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1474 "Waiting for %d IRQ commands to complete (tgt %p)", 1475 tgt->irq_cmd_count, tgt); 1476 1477 mutex_lock(&vha->vha_tgt.tgt_mutex); 1478 spin_lock_irqsave(&ha->hardware_lock, flags); 1479 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) { 1480 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1481 udelay(2); 1482 spin_lock_irqsave(&ha->hardware_lock, flags); 1483 } 1484 tgt->tgt_stop = 0; 1485 tgt->tgt_stopped = 1; 1486 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1487 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1488 1489 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished", 1490 tgt); 1491 } 1492 EXPORT_SYMBOL(qlt_stop_phase2); 1493 1494 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1495 static void qlt_release(struct qla_tgt *tgt) 1496 { 1497 scsi_qla_host_t *vha = tgt->vha; 1498 1499 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1500 qlt_stop_phase2(tgt); 1501 1502 vha->vha_tgt.qla_tgt = NULL; 1503 1504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1505 "Release of tgt %p finished\n", tgt); 1506 1507 kfree(tgt); 1508 } 1509 1510 /* ha->hardware_lock supposed to be held on entry */ 1511 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1512 const void *param, unsigned int param_size) 1513 { 1514 struct qla_tgt_sess_work_param *prm; 1515 unsigned long flags; 1516 1517 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1518 if (!prm) { 1519 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1520 "qla_target(%d): Unable to create session " 1521 "work, command will be refused", 0); 1522 return -ENOMEM; 1523 } 1524 1525 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1526 "Scheduling work (type %d, prm %p)" 1527 " to find session for param %p (size %d, tgt %p)\n", 1528 type, prm, param, param_size, tgt); 1529 1530 prm->type = type; 1531 memcpy(&prm->tm_iocb, param, param_size); 1532 1533 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1534 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1535 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1536 1537 schedule_work(&tgt->sess_work); 1538 1539 return 0; 1540 } 1541 1542 /* 1543 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1544 */ 1545 static void qlt_send_notify_ack(struct scsi_qla_host *vha, 1546 struct imm_ntfy_from_isp *ntfy, 1547 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1548 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1549 { 1550 struct qla_hw_data *ha = vha->hw; 1551 request_t *pkt; 1552 struct nack_to_isp *nack; 1553 1554 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1555 1556 /* Send marker if required */ 1557 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1558 return; 1559 1560 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 1561 if (!pkt) { 1562 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1563 "qla_target(%d): %s failed: unable to allocate " 1564 "request packet\n", vha->vp_idx, __func__); 1565 return; 1566 } 1567 1568 if (vha->vha_tgt.qla_tgt != NULL) 1569 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1570 1571 pkt->entry_type = NOTIFY_ACK_TYPE; 1572 pkt->entry_count = 1; 1573 1574 nack = (struct nack_to_isp *)pkt; 1575 nack->ox_id = ntfy->ox_id; 1576 1577 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1578 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1579 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1580 nack->u.isp24.flags = ntfy->u.isp24.flags & 1581 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1582 } 1583 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1584 nack->u.isp24.status = ntfy->u.isp24.status; 1585 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1586 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1587 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1588 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1589 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1590 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1591 nack->u.isp24.srr_reject_code = srr_reject_code; 1592 nack->u.isp24.srr_reject_code_expl = srr_explan; 1593 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1594 1595 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1596 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1597 vha->vp_idx, nack->u.isp24.status); 1598 1599 /* Memory Barrier */ 1600 wmb(); 1601 qla2x00_start_iocbs(vha, vha->req); 1602 } 1603 1604 /* 1605 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1606 */ 1607 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, 1608 struct abts_recv_from_24xx *abts, uint32_t status, 1609 bool ids_reversed) 1610 { 1611 struct qla_hw_data *ha = vha->hw; 1612 struct abts_resp_to_24xx *resp; 1613 uint32_t f_ctl; 1614 uint8_t *p; 1615 1616 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1617 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1618 ha, abts, status); 1619 1620 /* Send marker if required */ 1621 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1622 return; 1623 1624 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1625 if (!resp) { 1626 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1627 "qla_target(%d): %s failed: unable to allocate " 1628 "request packet", vha->vp_idx, __func__); 1629 return; 1630 } 1631 1632 resp->entry_type = ABTS_RESP_24XX; 1633 resp->entry_count = 1; 1634 resp->nport_handle = abts->nport_handle; 1635 resp->vp_index = vha->vp_idx; 1636 resp->sof_type = abts->sof_type; 1637 resp->exchange_address = abts->exchange_address; 1638 resp->fcp_hdr_le = abts->fcp_hdr_le; 1639 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1640 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1641 F_CTL_SEQ_INITIATIVE); 1642 p = (uint8_t *)&f_ctl; 1643 resp->fcp_hdr_le.f_ctl[0] = *p++; 1644 resp->fcp_hdr_le.f_ctl[1] = *p++; 1645 resp->fcp_hdr_le.f_ctl[2] = *p; 1646 if (ids_reversed) { 1647 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1648 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1649 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1650 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1651 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1652 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1653 } else { 1654 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1655 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1656 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1657 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1658 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1659 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1660 } 1661 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1662 if (status == FCP_TMF_CMPL) { 1663 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1664 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1665 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1666 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1667 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1668 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1669 } else { 1670 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1671 resp->payload.ba_rjt.reason_code = 1672 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1673 /* Other bytes are zero */ 1674 } 1675 1676 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1677 1678 /* Memory Barrier */ 1679 wmb(); 1680 qla2x00_start_iocbs(vha, vha->req); 1681 } 1682 1683 /* 1684 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1685 */ 1686 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1687 struct abts_resp_from_24xx_fw *entry) 1688 { 1689 struct ctio7_to_24xx *ctio; 1690 1691 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1692 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1693 /* Send marker if required */ 1694 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1695 return; 1696 1697 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1698 if (ctio == NULL) { 1699 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1700 "qla_target(%d): %s failed: unable to allocate " 1701 "request packet\n", vha->vp_idx, __func__); 1702 return; 1703 } 1704 1705 /* 1706 * We've got on entrance firmware's response on by us generated 1707 * ABTS response. So, in it ID fields are reversed. 1708 */ 1709 1710 ctio->entry_type = CTIO_TYPE7; 1711 ctio->entry_count = 1; 1712 ctio->nport_handle = entry->nport_handle; 1713 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1714 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1715 ctio->vp_index = vha->vp_idx; 1716 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1717 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1718 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1719 ctio->exchange_addr = entry->exchange_addr_to_abort; 1720 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1721 CTIO7_FLAGS_TERMINATE); 1722 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1723 1724 /* Memory Barrier */ 1725 wmb(); 1726 qla2x00_start_iocbs(vha, vha->req); 1727 1728 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, 1729 FCP_TMF_CMPL, true); 1730 } 1731 1732 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1733 { 1734 struct qla_tgt_sess_op *op; 1735 struct qla_tgt_cmd *cmd; 1736 1737 spin_lock(&vha->cmd_list_lock); 1738 1739 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1740 if (tag == op->atio.u.isp24.exchange_addr) { 1741 op->aborted = true; 1742 spin_unlock(&vha->cmd_list_lock); 1743 return 1; 1744 } 1745 } 1746 1747 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1748 if (tag == op->atio.u.isp24.exchange_addr) { 1749 op->aborted = true; 1750 spin_unlock(&vha->cmd_list_lock); 1751 return 1; 1752 } 1753 } 1754 1755 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1756 if (tag == cmd->atio.u.isp24.exchange_addr) { 1757 cmd->aborted = 1; 1758 spin_unlock(&vha->cmd_list_lock); 1759 return 1; 1760 } 1761 } 1762 1763 spin_unlock(&vha->cmd_list_lock); 1764 return 0; 1765 } 1766 1767 /* drop cmds for the given lun 1768 * XXX only looks for cmds on the port through which lun reset was recieved 1769 * XXX does not go through the list of other port (which may have cmds 1770 * for the same lun) 1771 */ 1772 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1773 uint32_t lun, uint8_t *s_id) 1774 { 1775 struct qla_tgt_sess_op *op; 1776 struct qla_tgt_cmd *cmd; 1777 uint32_t key; 1778 1779 key = sid_to_key(s_id); 1780 spin_lock(&vha->cmd_list_lock); 1781 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1782 uint32_t op_key; 1783 uint32_t op_lun; 1784 1785 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1786 op_lun = scsilun_to_int( 1787 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1788 if (op_key == key && op_lun == lun) 1789 op->aborted = true; 1790 } 1791 1792 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1793 uint32_t op_key; 1794 u64 op_lun; 1795 1796 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1797 op_lun = scsilun_to_int( 1798 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1799 if (op_key == key && op_lun == lun) 1800 op->aborted = true; 1801 } 1802 1803 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1804 uint32_t cmd_key; 1805 uint32_t cmd_lun; 1806 1807 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1808 cmd_lun = scsilun_to_int( 1809 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1810 if (cmd_key == key && cmd_lun == lun) 1811 cmd->aborted = 1; 1812 } 1813 spin_unlock(&vha->cmd_list_lock); 1814 } 1815 1816 /* ha->hardware_lock supposed to be held on entry */ 1817 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1818 struct abts_recv_from_24xx *abts, struct fc_port *sess) 1819 { 1820 struct qla_hw_data *ha = vha->hw; 1821 struct se_session *se_sess = sess->se_sess; 1822 struct qla_tgt_mgmt_cmd *mcmd; 1823 struct se_cmd *se_cmd; 1824 u32 lun = 0; 1825 int rc; 1826 bool found_lun = false; 1827 unsigned long flags; 1828 1829 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); 1830 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) { 1831 struct qla_tgt_cmd *cmd = 1832 container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 1833 if (se_cmd->tag == abts->exchange_addr_to_abort) { 1834 lun = cmd->unpacked_lun; 1835 found_lun = true; 1836 break; 1837 } 1838 } 1839 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); 1840 1841 /* cmd not in LIO lists, look in qla list */ 1842 if (!found_lun) { 1843 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 1844 /* send TASK_ABORT response immediately */ 1845 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false); 1846 return 0; 1847 } else { 1848 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081, 1849 "unable to find cmd in driver or LIO for tag 0x%x\n", 1850 abts->exchange_addr_to_abort); 1851 return -ENOENT; 1852 } 1853 } 1854 1855 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 1856 "qla_target(%d): task abort (tag=%d)\n", 1857 vha->vp_idx, abts->exchange_addr_to_abort); 1858 1859 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 1860 if (mcmd == NULL) { 1861 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 1862 "qla_target(%d): %s: Allocation of ABORT cmd failed", 1863 vha->vp_idx, __func__); 1864 return -ENOMEM; 1865 } 1866 memset(mcmd, 0, sizeof(*mcmd)); 1867 1868 mcmd->sess = sess; 1869 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 1870 mcmd->reset_count = vha->hw->chip_reset; 1871 mcmd->tmr_func = QLA_TGT_ABTS; 1872 1873 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 1874 abts->exchange_addr_to_abort); 1875 if (rc != 0) { 1876 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, 1877 "qla_target(%d): tgt_ops->handle_tmr()" 1878 " failed: %d", vha->vp_idx, rc); 1879 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1880 return -EFAULT; 1881 } 1882 1883 return 0; 1884 } 1885 1886 /* 1887 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1888 */ 1889 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1890 struct abts_recv_from_24xx *abts) 1891 { 1892 struct qla_hw_data *ha = vha->hw; 1893 struct fc_port *sess; 1894 uint32_t tag = abts->exchange_addr_to_abort; 1895 uint8_t s_id[3]; 1896 int rc; 1897 unsigned long flags; 1898 1899 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 1900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 1901 "qla_target(%d): ABTS: Abort Sequence not " 1902 "supported\n", vha->vp_idx); 1903 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1904 return; 1905 } 1906 1907 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 1908 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 1909 "qla_target(%d): ABTS: Unknown Exchange " 1910 "Address received\n", vha->vp_idx); 1911 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1912 return; 1913 } 1914 1915 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 1916 "qla_target(%d): task abort (s_id=%x:%x:%x, " 1917 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 1918 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 1919 le32_to_cpu(abts->fcp_hdr_le.parameter)); 1920 1921 s_id[0] = abts->fcp_hdr_le.s_id[2]; 1922 s_id[1] = abts->fcp_hdr_le.s_id[1]; 1923 s_id[2] = abts->fcp_hdr_le.s_id[0]; 1924 1925 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1926 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 1927 if (!sess) { 1928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 1929 "qla_target(%d): task abort for non-existant session\n", 1930 vha->vp_idx); 1931 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 1932 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); 1933 1934 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1935 1936 if (rc != 0) { 1937 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, 1938 false); 1939 } 1940 return; 1941 } 1942 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1943 1944 1945 if (sess->deleted) { 1946 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1947 return; 1948 } 1949 1950 rc = __qlt_24xx_handle_abts(vha, abts, sess); 1951 if (rc != 0) { 1952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 1953 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 1954 vha->vp_idx, rc); 1955 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1956 return; 1957 } 1958 } 1959 1960 /* 1961 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1962 */ 1963 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, 1964 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 1965 { 1966 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 1967 struct ctio7_to_24xx *ctio; 1968 uint16_t temp; 1969 1970 ql_dbg(ql_dbg_tgt, ha, 0xe008, 1971 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 1972 ha, atio, resp_code); 1973 1974 /* Send marker if required */ 1975 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS) 1976 return; 1977 1978 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL); 1979 if (ctio == NULL) { 1980 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 1981 "qla_target(%d): %s failed: unable to allocate " 1982 "request packet\n", ha->vp_idx, __func__); 1983 return; 1984 } 1985 1986 ctio->entry_type = CTIO_TYPE7; 1987 ctio->entry_count = 1; 1988 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1989 ctio->nport_handle = mcmd->sess->loop_id; 1990 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1991 ctio->vp_index = ha->vp_idx; 1992 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 1993 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 1994 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 1995 ctio->exchange_addr = atio->u.isp24.exchange_addr; 1996 ctio->u.status1.flags = (atio->u.isp24.attr << 9) | 1997 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS); 1998 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 1999 ctio->u.status1.ox_id = cpu_to_le16(temp); 2000 ctio->u.status1.scsi_status = 2001 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2002 ctio->u.status1.response_len = cpu_to_le16(8); 2003 ctio->u.status1.sense_data[0] = resp_code; 2004 2005 /* Memory Barrier */ 2006 wmb(); 2007 qla2x00_start_iocbs(ha, ha->req); 2008 } 2009 2010 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2011 { 2012 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2013 } 2014 EXPORT_SYMBOL(qlt_free_mcmd); 2015 2016 /* callback from target fabric module code */ 2017 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2018 { 2019 struct scsi_qla_host *vha = mcmd->sess->vha; 2020 struct qla_hw_data *ha = vha->hw; 2021 unsigned long flags; 2022 2023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2024 "TM response mcmd (%p) status %#x state %#x", 2025 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2026 2027 spin_lock_irqsave(&ha->hardware_lock, flags); 2028 2029 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) { 2030 /* 2031 * Either the port is not online or this request was from 2032 * previous life, just abort the processing. 2033 */ 2034 ql_dbg(ql_dbg_async, vha, 0xe100, 2035 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2036 vha->flags.online, qla2x00_reset_active(vha), 2037 mcmd->reset_count, ha->chip_reset); 2038 ha->tgt.tgt_ops->free_mcmd(mcmd); 2039 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2040 return; 2041 } 2042 2043 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2044 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2045 ELS_LOGO || 2046 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2047 ELS_PRLO || 2048 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2049 ELS_TPRLO) { 2050 ql_dbg(ql_dbg_disc, vha, 0xffff, 2051 "TM response logo %phC status %#x state %#x", 2052 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2053 mcmd->flags); 2054 qlt_schedule_sess_for_deletion_lock(mcmd->sess); 2055 } else { 2056 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, 2057 0, 0, 0, 0, 0, 0); 2058 } 2059 } else { 2060 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) 2061 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, 2062 mcmd->fc_tm_rsp, false); 2063 else 2064 qlt_24xx_send_task_mgmt_ctio(vha, mcmd, 2065 mcmd->fc_tm_rsp); 2066 } 2067 /* 2068 * Make the callback for ->free_mcmd() to queue_work() and invoke 2069 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2070 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2071 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2072 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2073 * qlt_xmit_tm_rsp() returns here.. 2074 */ 2075 ha->tgt.tgt_ops->free_mcmd(mcmd); 2076 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2077 } 2078 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2079 2080 /* No locks */ 2081 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2082 { 2083 struct qla_tgt_cmd *cmd = prm->cmd; 2084 2085 BUG_ON(cmd->sg_cnt == 0); 2086 2087 prm->sg = (struct scatterlist *)cmd->sg; 2088 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg, 2089 cmd->sg_cnt, cmd->dma_data_direction); 2090 if (unlikely(prm->seg_cnt == 0)) 2091 goto out_err; 2092 2093 prm->cmd->sg_mapped = 1; 2094 2095 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2096 /* 2097 * If greater than four sg entries then we need to allocate 2098 * the continuation entries 2099 */ 2100 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd) 2101 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2102 prm->tgt->datasegs_per_cmd, 2103 prm->tgt->datasegs_per_cont); 2104 } else { 2105 /* DIF */ 2106 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2107 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2108 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2109 prm->tot_dsds = prm->seg_cnt; 2110 } else 2111 prm->tot_dsds = prm->seg_cnt; 2112 2113 if (cmd->prot_sg_cnt) { 2114 prm->prot_sg = cmd->prot_sg; 2115 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev, 2116 cmd->prot_sg, cmd->prot_sg_cnt, 2117 cmd->dma_data_direction); 2118 if (unlikely(prm->prot_seg_cnt == 0)) 2119 goto out_err; 2120 2121 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2122 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2123 /* Dif Bundling not support here */ 2124 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2125 cmd->blk_sz); 2126 prm->tot_dsds += prm->prot_seg_cnt; 2127 } else 2128 prm->tot_dsds += prm->prot_seg_cnt; 2129 } 2130 } 2131 2132 return 0; 2133 2134 out_err: 2135 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, 2136 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2137 0, prm->cmd->sg_cnt); 2138 return -1; 2139 } 2140 2141 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2142 { 2143 struct qla_hw_data *ha = vha->hw; 2144 2145 if (!cmd->sg_mapped) 2146 return; 2147 2148 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 2149 cmd->sg_mapped = 0; 2150 2151 if (cmd->prot_sg_cnt) 2152 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 2153 cmd->dma_data_direction); 2154 2155 if (cmd->ctx_dsd_alloced) 2156 qla2x00_clean_dsd_pool(ha, NULL, cmd); 2157 2158 if (cmd->ctx) 2159 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2160 } 2161 2162 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha, 2163 uint32_t req_cnt) 2164 { 2165 uint32_t cnt, cnt_in; 2166 2167 if (vha->req->cnt < (req_cnt + 2)) { 2168 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out); 2169 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in); 2170 2171 if (vha->req->ring_index < cnt) 2172 vha->req->cnt = cnt - vha->req->ring_index; 2173 else 2174 vha->req->cnt = vha->req->length - 2175 (vha->req->ring_index - cnt); 2176 2177 if (unlikely(vha->req->cnt < (req_cnt + 2))) { 2178 ql_dbg(ql_dbg_io, vha, 0x305a, 2179 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n", 2180 vha->vp_idx, vha->req->ring_index, 2181 vha->req->cnt, req_cnt, cnt, cnt_in, 2182 vha->req->length); 2183 return -EAGAIN; 2184 } 2185 } 2186 2187 vha->req->cnt -= req_cnt; 2188 2189 return 0; 2190 } 2191 2192 /* 2193 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2194 */ 2195 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha) 2196 { 2197 /* Adjust ring index. */ 2198 vha->req->ring_index++; 2199 if (vha->req->ring_index == vha->req->length) { 2200 vha->req->ring_index = 0; 2201 vha->req->ring_ptr = vha->req->ring; 2202 } else { 2203 vha->req->ring_ptr++; 2204 } 2205 return (cont_entry_t *)vha->req->ring_ptr; 2206 } 2207 2208 /* ha->hardware_lock supposed to be held on entry */ 2209 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha) 2210 { 2211 struct qla_hw_data *ha = vha->hw; 2212 uint32_t h; 2213 2214 h = ha->tgt.current_handle; 2215 /* always increment cmd handle */ 2216 do { 2217 ++h; 2218 if (h > DEFAULT_OUTSTANDING_COMMANDS) 2219 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */ 2220 if (h == ha->tgt.current_handle) { 2221 ql_dbg(ql_dbg_io, vha, 0x305b, 2222 "qla_target(%d): Ran out of " 2223 "empty cmd slots in ha %p\n", vha->vp_idx, ha); 2224 h = QLA_TGT_NULL_HANDLE; 2225 break; 2226 } 2227 } while ((h == QLA_TGT_NULL_HANDLE) || 2228 (h == QLA_TGT_SKIP_HANDLE) || 2229 (ha->tgt.cmds[h-1] != NULL)); 2230 2231 if (h != QLA_TGT_NULL_HANDLE) 2232 ha->tgt.current_handle = h; 2233 2234 return h; 2235 } 2236 2237 /* ha->hardware_lock supposed to be held on entry */ 2238 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, 2239 struct scsi_qla_host *vha) 2240 { 2241 uint32_t h; 2242 struct ctio7_to_24xx *pkt; 2243 struct qla_hw_data *ha = vha->hw; 2244 struct atio_from_isp *atio = &prm->cmd->atio; 2245 uint16_t temp; 2246 2247 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr; 2248 prm->pkt = pkt; 2249 memset(pkt, 0, sizeof(*pkt)); 2250 2251 pkt->entry_type = CTIO_TYPE7; 2252 pkt->entry_count = (uint8_t)prm->req_cnt; 2253 pkt->vp_index = vha->vp_idx; 2254 2255 h = qlt_make_handle(vha); 2256 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2257 /* 2258 * CTIO type 7 from the firmware doesn't provide a way to 2259 * know the initiator's LOOP ID, hence we can't find 2260 * the session and, so, the command. 2261 */ 2262 return -EAGAIN; 2263 } else 2264 ha->tgt.cmds[h-1] = prm->cmd; 2265 2266 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 2267 pkt->nport_handle = prm->cmd->loop_id; 2268 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2269 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2270 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2271 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2272 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2273 pkt->u.status0.flags |= (atio->u.isp24.attr << 9); 2274 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2275 pkt->u.status0.ox_id = cpu_to_le16(temp); 2276 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2277 2278 return 0; 2279 } 2280 2281 /* 2282 * ha->hardware_lock supposed to be held on entry. We have already made sure 2283 * that there is sufficient amount of request entries to not drop it. 2284 */ 2285 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm, 2286 struct scsi_qla_host *vha) 2287 { 2288 int cnt; 2289 uint32_t *dword_ptr; 2290 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 2291 2292 /* Build continuation packets */ 2293 while (prm->seg_cnt > 0) { 2294 cont_a64_entry_t *cont_pkt64 = 2295 (cont_a64_entry_t *)qlt_get_req_pkt(vha); 2296 2297 /* 2298 * Make sure that from cont_pkt64 none of 2299 * 64-bit specific fields used for 32-bit 2300 * addressing. Cast to (cont_entry_t *) for 2301 * that. 2302 */ 2303 2304 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2305 2306 cont_pkt64->entry_count = 1; 2307 cont_pkt64->sys_define = 0; 2308 2309 if (enable_64bit_addressing) { 2310 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2311 dword_ptr = 2312 (uint32_t *)&cont_pkt64->dseg_0_address; 2313 } else { 2314 cont_pkt64->entry_type = CONTINUE_TYPE; 2315 dword_ptr = 2316 (uint32_t *)&((cont_entry_t *) 2317 cont_pkt64)->dseg_0_address; 2318 } 2319 2320 /* Load continuation entry data segments */ 2321 for (cnt = 0; 2322 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt; 2323 cnt++, prm->seg_cnt--) { 2324 *dword_ptr++ = 2325 cpu_to_le32(pci_dma_lo32 2326 (sg_dma_address(prm->sg))); 2327 if (enable_64bit_addressing) { 2328 *dword_ptr++ = 2329 cpu_to_le32(pci_dma_hi32 2330 (sg_dma_address 2331 (prm->sg))); 2332 } 2333 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2334 2335 prm->sg = sg_next(prm->sg); 2336 } 2337 } 2338 } 2339 2340 /* 2341 * ha->hardware_lock supposed to be held on entry. We have already made sure 2342 * that there is sufficient amount of request entries to not drop it. 2343 */ 2344 static void qlt_load_data_segments(struct qla_tgt_prm *prm, 2345 struct scsi_qla_host *vha) 2346 { 2347 int cnt; 2348 uint32_t *dword_ptr; 2349 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 2350 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2351 2352 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2353 2354 /* Setup packet address segment pointer */ 2355 dword_ptr = pkt24->u.status0.dseg_0_address; 2356 2357 /* Set total data segment count */ 2358 if (prm->seg_cnt) 2359 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2360 2361 if (prm->seg_cnt == 0) { 2362 /* No data transfer */ 2363 *dword_ptr++ = 0; 2364 *dword_ptr = 0; 2365 return; 2366 } 2367 2368 /* If scatter gather */ 2369 2370 /* Load command entry data segments */ 2371 for (cnt = 0; 2372 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt; 2373 cnt++, prm->seg_cnt--) { 2374 *dword_ptr++ = 2375 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 2376 if (enable_64bit_addressing) { 2377 *dword_ptr++ = 2378 cpu_to_le32(pci_dma_hi32( 2379 sg_dma_address(prm->sg))); 2380 } 2381 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2382 2383 prm->sg = sg_next(prm->sg); 2384 } 2385 2386 qlt_load_cont_data_segments(prm, vha); 2387 } 2388 2389 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2390 { 2391 return cmd->bufflen > 0; 2392 } 2393 2394 /* 2395 * Called without ha->hardware_lock held 2396 */ 2397 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2398 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2399 uint32_t *full_req_cnt) 2400 { 2401 struct qla_tgt *tgt = cmd->tgt; 2402 struct scsi_qla_host *vha = tgt->vha; 2403 struct qla_hw_data *ha = vha->hw; 2404 struct se_cmd *se_cmd = &cmd->se_cmd; 2405 2406 prm->cmd = cmd; 2407 prm->tgt = tgt; 2408 prm->rq_result = scsi_status; 2409 prm->sense_buffer = &cmd->sense_buffer[0]; 2410 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2411 prm->sg = NULL; 2412 prm->seg_cnt = -1; 2413 prm->req_cnt = 1; 2414 prm->add_status_pkt = 0; 2415 2416 /* Send marker if required */ 2417 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 2418 return -EFAULT; 2419 2420 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2421 if (qlt_pci_map_calc_cnt(prm) != 0) 2422 return -EAGAIN; 2423 } 2424 2425 *full_req_cnt = prm->req_cnt; 2426 2427 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2428 prm->residual = se_cmd->residual_count; 2429 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c, 2430 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2431 prm->residual, se_cmd->tag, 2432 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2433 cmd->bufflen, prm->rq_result); 2434 prm->rq_result |= SS_RESIDUAL_UNDER; 2435 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2436 prm->residual = se_cmd->residual_count; 2437 ql_dbg(ql_dbg_io, vha, 0x305d, 2438 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2439 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2440 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2441 prm->rq_result |= SS_RESIDUAL_OVER; 2442 } 2443 2444 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2445 /* 2446 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2447 * ignored in *xmit_response() below 2448 */ 2449 if (qlt_has_data(cmd)) { 2450 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2451 (IS_FWI2_CAPABLE(ha) && 2452 (prm->rq_result != 0))) { 2453 prm->add_status_pkt = 1; 2454 (*full_req_cnt)++; 2455 } 2456 } 2457 } 2458 2459 return 0; 2460 } 2461 2462 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha, 2463 struct qla_tgt_cmd *cmd, int sending_sense) 2464 { 2465 if (ha->tgt.enable_class_2) 2466 return 0; 2467 2468 if (sending_sense) 2469 return cmd->conf_compl_supported; 2470 else 2471 return ha->tgt.enable_explicit_conf && 2472 cmd->conf_compl_supported; 2473 } 2474 2475 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2476 struct qla_tgt_prm *prm) 2477 { 2478 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2479 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2480 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2481 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) { 2482 ctio->u.status0.flags |= cpu_to_le16( 2483 CTIO7_FLAGS_EXPLICIT_CONFORM | 2484 CTIO7_FLAGS_CONFORM_REQ); 2485 } 2486 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2487 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2488 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2489 int i; 2490 2491 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) { 2492 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2493 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, 2494 "Skipping EXPLICIT_CONFORM and " 2495 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2496 "non GOOD status\n"); 2497 goto skip_explict_conf; 2498 } 2499 ctio->u.status1.flags |= cpu_to_le16( 2500 CTIO7_FLAGS_EXPLICIT_CONFORM | 2501 CTIO7_FLAGS_CONFORM_REQ); 2502 } 2503 skip_explict_conf: 2504 ctio->u.status1.flags &= 2505 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2506 ctio->u.status1.flags |= 2507 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2508 ctio->u.status1.scsi_status |= 2509 cpu_to_le16(SS_SENSE_LEN_VALID); 2510 ctio->u.status1.sense_length = 2511 cpu_to_le16(prm->sense_buffer_len); 2512 for (i = 0; i < prm->sense_buffer_len/4; i++) 2513 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2514 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2515 #if 0 2516 if (unlikely((prm->sense_buffer_len % 4) != 0)) { 2517 static int q; 2518 if (q < 10) { 2519 ql_dbg(ql_dbg_tgt, vha, 0xe04f, 2520 "qla_target(%d): %d bytes of sense " 2521 "lost", prm->tgt->ha->vp_idx, 2522 prm->sense_buffer_len % 4); 2523 q++; 2524 } 2525 } 2526 #endif 2527 } else { 2528 ctio->u.status1.flags &= 2529 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2530 ctio->u.status1.flags |= 2531 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2532 ctio->u.status1.sense_length = 0; 2533 memset(ctio->u.status1.sense_data, 0, 2534 sizeof(ctio->u.status1.sense_data)); 2535 } 2536 2537 /* Sense with len > 24, is it possible ??? */ 2538 } 2539 2540 2541 2542 /* diff */ 2543 static inline int 2544 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2545 { 2546 /* 2547 * Uncomment when corresponding SCSI changes are done. 2548 * 2549 if (!sp->cmd->prot_chk) 2550 return 0; 2551 * 2552 */ 2553 switch (se_cmd->prot_op) { 2554 case TARGET_PROT_DOUT_INSERT: 2555 case TARGET_PROT_DIN_STRIP: 2556 if (ql2xenablehba_err_chk >= 1) 2557 return 1; 2558 break; 2559 case TARGET_PROT_DOUT_PASS: 2560 case TARGET_PROT_DIN_PASS: 2561 if (ql2xenablehba_err_chk >= 2) 2562 return 1; 2563 break; 2564 case TARGET_PROT_DIN_INSERT: 2565 case TARGET_PROT_DOUT_STRIP: 2566 return 1; 2567 default: 2568 break; 2569 } 2570 return 0; 2571 } 2572 2573 /* 2574 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 2575 * 2576 */ 2577 static inline void 2578 qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx) 2579 { 2580 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2581 2582 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2 2583 * have been immplemented by TCM, before AppTag is avail. 2584 * Look for modesense_handlers[] 2585 */ 2586 ctx->app_tag = 0; 2587 ctx->app_tag_mask[0] = 0x0; 2588 ctx->app_tag_mask[1] = 0x0; 2589 2590 switch (se_cmd->prot_type) { 2591 case TARGET_DIF_TYPE0_PROT: 2592 /* 2593 * No check for ql2xenablehba_err_chk, as it would be an 2594 * I/O error if hba tag generation is not done. 2595 */ 2596 ctx->ref_tag = cpu_to_le32(lba); 2597 2598 if (!qlt_hba_err_chk_enabled(se_cmd)) 2599 break; 2600 2601 /* enable ALL bytes of the ref tag */ 2602 ctx->ref_tag_mask[0] = 0xff; 2603 ctx->ref_tag_mask[1] = 0xff; 2604 ctx->ref_tag_mask[2] = 0xff; 2605 ctx->ref_tag_mask[3] = 0xff; 2606 break; 2607 /* 2608 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 2609 * 16 bit app tag. 2610 */ 2611 case TARGET_DIF_TYPE1_PROT: 2612 ctx->ref_tag = cpu_to_le32(lba); 2613 2614 if (!qlt_hba_err_chk_enabled(se_cmd)) 2615 break; 2616 2617 /* enable ALL bytes of the ref tag */ 2618 ctx->ref_tag_mask[0] = 0xff; 2619 ctx->ref_tag_mask[1] = 0xff; 2620 ctx->ref_tag_mask[2] = 0xff; 2621 ctx->ref_tag_mask[3] = 0xff; 2622 break; 2623 /* 2624 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 2625 * match LBA in CDB + N 2626 */ 2627 case TARGET_DIF_TYPE2_PROT: 2628 ctx->ref_tag = cpu_to_le32(lba); 2629 2630 if (!qlt_hba_err_chk_enabled(se_cmd)) 2631 break; 2632 2633 /* enable ALL bytes of the ref tag */ 2634 ctx->ref_tag_mask[0] = 0xff; 2635 ctx->ref_tag_mask[1] = 0xff; 2636 ctx->ref_tag_mask[2] = 0xff; 2637 ctx->ref_tag_mask[3] = 0xff; 2638 break; 2639 2640 /* For Type 3 protection: 16 bit GUARD only */ 2641 case TARGET_DIF_TYPE3_PROT: 2642 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2643 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2644 break; 2645 } 2646 } 2647 2648 2649 static inline int 2650 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha) 2651 { 2652 uint32_t *cur_dsd; 2653 uint32_t transfer_length = 0; 2654 uint32_t data_bytes; 2655 uint32_t dif_bytes; 2656 uint8_t bundling = 1; 2657 uint8_t *clr_ptr; 2658 struct crc_context *crc_ctx_pkt = NULL; 2659 struct qla_hw_data *ha; 2660 struct ctio_crc2_to_fw *pkt; 2661 dma_addr_t crc_ctx_dma; 2662 uint16_t fw_prot_opts = 0; 2663 struct qla_tgt_cmd *cmd = prm->cmd; 2664 struct se_cmd *se_cmd = &cmd->se_cmd; 2665 uint32_t h; 2666 struct atio_from_isp *atio = &prm->cmd->atio; 2667 uint16_t t16; 2668 2669 ha = vha->hw; 2670 2671 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr; 2672 prm->pkt = pkt; 2673 memset(pkt, 0, sizeof(*pkt)); 2674 2675 ql_dbg(ql_dbg_tgt, vha, 0xe071, 2676 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2677 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2678 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2679 2680 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2681 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2682 bundling = 0; 2683 2684 /* Compute dif len and adjust data len to incude protection */ 2685 data_bytes = cmd->bufflen; 2686 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2687 2688 switch (se_cmd->prot_op) { 2689 case TARGET_PROT_DIN_INSERT: 2690 case TARGET_PROT_DOUT_STRIP: 2691 transfer_length = data_bytes; 2692 data_bytes += dif_bytes; 2693 break; 2694 2695 case TARGET_PROT_DIN_STRIP: 2696 case TARGET_PROT_DOUT_INSERT: 2697 case TARGET_PROT_DIN_PASS: 2698 case TARGET_PROT_DOUT_PASS: 2699 transfer_length = data_bytes + dif_bytes; 2700 break; 2701 2702 default: 2703 BUG(); 2704 break; 2705 } 2706 2707 if (!qlt_hba_err_chk_enabled(se_cmd)) 2708 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2709 /* HBA error checking enabled */ 2710 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2711 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2712 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2713 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 2714 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2715 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2716 } 2717 2718 switch (se_cmd->prot_op) { 2719 case TARGET_PROT_DIN_INSERT: 2720 case TARGET_PROT_DOUT_INSERT: 2721 fw_prot_opts |= PO_MODE_DIF_INSERT; 2722 break; 2723 case TARGET_PROT_DIN_STRIP: 2724 case TARGET_PROT_DOUT_STRIP: 2725 fw_prot_opts |= PO_MODE_DIF_REMOVE; 2726 break; 2727 case TARGET_PROT_DIN_PASS: 2728 case TARGET_PROT_DOUT_PASS: 2729 fw_prot_opts |= PO_MODE_DIF_PASS; 2730 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 2731 break; 2732 default:/* Normal Request */ 2733 fw_prot_opts |= PO_MODE_DIF_PASS; 2734 break; 2735 } 2736 2737 2738 /* ---- PKT ---- */ 2739 /* Update entry type to indicate Command Type CRC_2 IOCB */ 2740 pkt->entry_type = CTIO_CRC2; 2741 pkt->entry_count = 1; 2742 pkt->vp_index = vha->vp_idx; 2743 2744 h = qlt_make_handle(vha); 2745 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2746 /* 2747 * CTIO type 7 from the firmware doesn't provide a way to 2748 * know the initiator's LOOP ID, hence we can't find 2749 * the session and, so, the command. 2750 */ 2751 return -EAGAIN; 2752 } else 2753 ha->tgt.cmds[h-1] = prm->cmd; 2754 2755 2756 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 2757 pkt->nport_handle = prm->cmd->loop_id; 2758 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2759 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2760 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2761 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2762 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2763 2764 /* silence compile warning */ 2765 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2766 pkt->ox_id = cpu_to_le16(t16); 2767 2768 t16 = (atio->u.isp24.attr << 9); 2769 pkt->flags |= cpu_to_le16(t16); 2770 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 2771 2772 /* Set transfer direction */ 2773 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2774 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 2775 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2776 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 2777 2778 2779 pkt->dseg_count = prm->tot_dsds; 2780 /* Fibre channel byte count */ 2781 pkt->transfer_length = cpu_to_le32(transfer_length); 2782 2783 2784 /* ----- CRC context -------- */ 2785 2786 /* Allocate CRC context from global pool */ 2787 crc_ctx_pkt = cmd->ctx = 2788 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 2789 2790 if (!crc_ctx_pkt) 2791 goto crc_queuing_error; 2792 2793 /* Zero out CTX area. */ 2794 clr_ptr = (uint8_t *)crc_ctx_pkt; 2795 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 2796 2797 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 2798 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 2799 2800 /* Set handle */ 2801 crc_ctx_pkt->handle = pkt->handle; 2802 2803 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt); 2804 2805 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 2806 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 2807 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 2808 2809 2810 if (!bundling) { 2811 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 2812 } else { 2813 /* 2814 * Configure Bundling if we need to fetch interlaving 2815 * protection PCI accesses 2816 */ 2817 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 2818 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 2819 crc_ctx_pkt->u.bundling.dseg_count = 2820 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 2821 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 2822 } 2823 2824 /* Finish the common fields of CRC pkt */ 2825 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 2826 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 2827 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 2828 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 2829 2830 2831 /* Walks data segments */ 2832 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 2833 2834 if (!bundling && prm->prot_seg_cnt) { 2835 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 2836 prm->tot_dsds, cmd)) 2837 goto crc_queuing_error; 2838 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 2839 (prm->tot_dsds - prm->prot_seg_cnt), cmd)) 2840 goto crc_queuing_error; 2841 2842 if (bundling && prm->prot_seg_cnt) { 2843 /* Walks dif segments */ 2844 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 2845 2846 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 2847 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 2848 prm->prot_seg_cnt, cmd)) 2849 goto crc_queuing_error; 2850 } 2851 return QLA_SUCCESS; 2852 2853 crc_queuing_error: 2854 /* Cleanup will be performed by the caller */ 2855 2856 return QLA_FUNCTION_FAILED; 2857 } 2858 2859 2860 /* 2861 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 2862 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 2863 */ 2864 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 2865 uint8_t scsi_status) 2866 { 2867 struct scsi_qla_host *vha = cmd->vha; 2868 struct qla_hw_data *ha = vha->hw; 2869 struct ctio7_to_24xx *pkt; 2870 struct qla_tgt_prm prm; 2871 uint32_t full_req_cnt = 0; 2872 unsigned long flags = 0; 2873 int res; 2874 2875 spin_lock_irqsave(&ha->hardware_lock, flags); 2876 if (cmd->sess && cmd->sess->deleted) { 2877 cmd->state = QLA_TGT_STATE_PROCESSED; 2878 if (cmd->sess->logout_completed) 2879 /* no need to terminate. FW already freed exchange. */ 2880 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2881 else 2882 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 2883 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2884 return 0; 2885 } 2886 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2887 2888 memset(&prm, 0, sizeof(prm)); 2889 2890 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, 2891 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n", 2892 (xmit_type & QLA_TGT_XMIT_STATUS) ? 2893 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 2894 &cmd->se_cmd); 2895 2896 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 2897 &full_req_cnt); 2898 if (unlikely(res != 0)) { 2899 return res; 2900 } 2901 2902 spin_lock_irqsave(&ha->hardware_lock, flags); 2903 2904 if (xmit_type == QLA_TGT_XMIT_STATUS) 2905 vha->tgt_counters.core_qla_snd_status++; 2906 else 2907 vha->tgt_counters.core_qla_que_buf++; 2908 2909 if (!vha->flags.online || cmd->reset_count != ha->chip_reset) { 2910 /* 2911 * Either the port is not online or this request was from 2912 * previous life, just abort the processing. 2913 */ 2914 cmd->state = QLA_TGT_STATE_PROCESSED; 2915 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2916 ql_dbg(ql_dbg_async, vha, 0xe101, 2917 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 2918 vha->flags.online, qla2x00_reset_active(vha), 2919 cmd->reset_count, ha->chip_reset); 2920 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2921 return 0; 2922 } 2923 2924 /* Does F/W have an IOCBs for this request */ 2925 res = qlt_check_reserve_free_req(vha, full_req_cnt); 2926 if (unlikely(res)) 2927 goto out_unmap_unlock; 2928 2929 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 2930 res = qlt_build_ctio_crc2_pkt(&prm, vha); 2931 else 2932 res = qlt_24xx_build_ctio_pkt(&prm, vha); 2933 if (unlikely(res != 0)) { 2934 vha->req->cnt += full_req_cnt; 2935 goto out_unmap_unlock; 2936 } 2937 2938 pkt = (struct ctio7_to_24xx *)prm.pkt; 2939 2940 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 2941 pkt->u.status0.flags |= 2942 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 2943 CTIO7_FLAGS_STATUS_MODE_0); 2944 2945 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 2946 qlt_load_data_segments(&prm, vha); 2947 2948 if (prm.add_status_pkt == 0) { 2949 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2950 pkt->u.status0.scsi_status = 2951 cpu_to_le16(prm.rq_result); 2952 pkt->u.status0.residual = 2953 cpu_to_le32(prm.residual); 2954 pkt->u.status0.flags |= cpu_to_le16( 2955 CTIO7_FLAGS_SEND_STATUS); 2956 if (qlt_need_explicit_conf(ha, cmd, 0)) { 2957 pkt->u.status0.flags |= 2958 cpu_to_le16( 2959 CTIO7_FLAGS_EXPLICIT_CONFORM | 2960 CTIO7_FLAGS_CONFORM_REQ); 2961 } 2962 } 2963 2964 } else { 2965 /* 2966 * We have already made sure that there is sufficient 2967 * amount of request entries to not drop HW lock in 2968 * req_pkt(). 2969 */ 2970 struct ctio7_to_24xx *ctio = 2971 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha); 2972 2973 ql_dbg(ql_dbg_io, vha, 0x305e, 2974 "Building additional status packet 0x%p.\n", 2975 ctio); 2976 2977 /* 2978 * T10Dif: ctio_crc2_to_fw overlay ontop of 2979 * ctio7_to_24xx 2980 */ 2981 memcpy(ctio, pkt, sizeof(*ctio)); 2982 /* reset back to CTIO7 */ 2983 ctio->entry_count = 1; 2984 ctio->entry_type = CTIO_TYPE7; 2985 ctio->dseg_count = 0; 2986 ctio->u.status1.flags &= ~cpu_to_le16( 2987 CTIO7_FLAGS_DATA_IN); 2988 2989 /* Real finish is ctio_m1's finish */ 2990 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 2991 pkt->u.status0.flags |= cpu_to_le16( 2992 CTIO7_FLAGS_DONT_RET_CTIO); 2993 2994 /* qlt_24xx_init_ctio_to_isp will correct 2995 * all neccessary fields that's part of CTIO7. 2996 * There should be no residual of CTIO-CRC2 data. 2997 */ 2998 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 2999 &prm); 3000 pr_debug("Status CTIO7: %p\n", ctio); 3001 } 3002 } else 3003 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3004 3005 3006 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3007 cmd->cmd_sent_to_fw = 1; 3008 3009 /* Memory Barrier */ 3010 wmb(); 3011 qla2x00_start_iocbs(vha, vha->req); 3012 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3013 3014 return 0; 3015 3016 out_unmap_unlock: 3017 qlt_unmap_sg(vha, cmd); 3018 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3019 3020 return res; 3021 } 3022 EXPORT_SYMBOL(qlt_xmit_response); 3023 3024 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3025 { 3026 struct ctio7_to_24xx *pkt; 3027 struct scsi_qla_host *vha = cmd->vha; 3028 struct qla_hw_data *ha = vha->hw; 3029 struct qla_tgt *tgt = cmd->tgt; 3030 struct qla_tgt_prm prm; 3031 unsigned long flags; 3032 int res = 0; 3033 3034 memset(&prm, 0, sizeof(prm)); 3035 prm.cmd = cmd; 3036 prm.tgt = tgt; 3037 prm.sg = NULL; 3038 prm.req_cnt = 1; 3039 3040 /* Send marker if required */ 3041 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 3042 return -EIO; 3043 3044 /* Calculate number of entries and segments required */ 3045 if (qlt_pci_map_calc_cnt(&prm) != 0) 3046 return -EAGAIN; 3047 3048 spin_lock_irqsave(&ha->hardware_lock, flags); 3049 3050 if (!vha->flags.online || (cmd->reset_count != ha->chip_reset) || 3051 (cmd->sess && cmd->sess->deleted)) { 3052 /* 3053 * Either the port is not online or this request was from 3054 * previous life, just abort the processing. 3055 */ 3056 cmd->state = QLA_TGT_STATE_NEED_DATA; 3057 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3058 ql_dbg(ql_dbg_async, vha, 0xe102, 3059 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3060 vha->flags.online, qla2x00_reset_active(vha), 3061 cmd->reset_count, ha->chip_reset); 3062 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3063 return 0; 3064 } 3065 3066 /* Does F/W have an IOCBs for this request */ 3067 res = qlt_check_reserve_free_req(vha, prm.req_cnt); 3068 if (res != 0) 3069 goto out_unlock_free_unmap; 3070 if (cmd->se_cmd.prot_op) 3071 res = qlt_build_ctio_crc2_pkt(&prm, vha); 3072 else 3073 res = qlt_24xx_build_ctio_pkt(&prm, vha); 3074 3075 if (unlikely(res != 0)) { 3076 vha->req->cnt += prm.req_cnt; 3077 goto out_unlock_free_unmap; 3078 } 3079 3080 pkt = (struct ctio7_to_24xx *)prm.pkt; 3081 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3082 CTIO7_FLAGS_STATUS_MODE_0); 3083 3084 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3085 qlt_load_data_segments(&prm, vha); 3086 3087 cmd->state = QLA_TGT_STATE_NEED_DATA; 3088 cmd->cmd_sent_to_fw = 1; 3089 3090 /* Memory Barrier */ 3091 wmb(); 3092 qla2x00_start_iocbs(vha, vha->req); 3093 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3094 3095 return res; 3096 3097 out_unlock_free_unmap: 3098 qlt_unmap_sg(vha, cmd); 3099 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3100 3101 return res; 3102 } 3103 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3104 3105 3106 /* 3107 * Checks the guard or meta-data for the type of error 3108 * detected by the HBA. 3109 */ 3110 static inline int 3111 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd, 3112 struct ctio_crc_from_fw *sts) 3113 { 3114 uint8_t *ap = &sts->actual_dif[0]; 3115 uint8_t *ep = &sts->expected_dif[0]; 3116 uint32_t e_ref_tag, a_ref_tag; 3117 uint16_t e_app_tag, a_app_tag; 3118 uint16_t e_guard, a_guard; 3119 uint64_t lba = cmd->se_cmd.t_task_lba; 3120 3121 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3122 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3123 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3124 3125 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3126 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3127 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3128 3129 ql_dbg(ql_dbg_tgt, vha, 0xe075, 3130 "iocb(s) %p Returned STATUS.\n", sts); 3131 3132 ql_dbg(ql_dbg_tgt, vha, 0xf075, 3133 "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n", 3134 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3135 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard); 3136 3137 /* 3138 * Ignore sector if: 3139 * For type 3: ref & app tag is all 'f's 3140 * For type 0,1,2: app tag is all 'f's 3141 */ 3142 if ((a_app_tag == 0xffff) && 3143 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) || 3144 (a_ref_tag == 0xffffffff))) { 3145 uint32_t blocks_done; 3146 3147 /* 2TB boundary case covered automatically with this */ 3148 blocks_done = e_ref_tag - (uint32_t)lba + 1; 3149 cmd->se_cmd.bad_sector = e_ref_tag; 3150 cmd->se_cmd.pi_err = 0; 3151 ql_dbg(ql_dbg_tgt, vha, 0xf074, 3152 "need to return scsi good\n"); 3153 3154 /* Update protection tag */ 3155 if (cmd->prot_sg_cnt) { 3156 uint32_t i, k = 0, num_ent; 3157 struct scatterlist *sg, *sgl; 3158 3159 3160 sgl = cmd->prot_sg; 3161 3162 /* Patch the corresponding protection tags */ 3163 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) { 3164 num_ent = sg_dma_len(sg) / 8; 3165 if (k + num_ent < blocks_done) { 3166 k += num_ent; 3167 continue; 3168 } 3169 k = blocks_done; 3170 break; 3171 } 3172 3173 if (k != blocks_done) { 3174 ql_log(ql_log_warn, vha, 0xf076, 3175 "unexpected tag values tag:lba=%u:%llu)\n", 3176 e_ref_tag, (unsigned long long)lba); 3177 goto out; 3178 } 3179 3180 #if 0 3181 struct sd_dif_tuple *spt; 3182 /* TODO: 3183 * This section came from initiator. Is it valid here? 3184 * should ulp be override with actual val??? 3185 */ 3186 spt = page_address(sg_page(sg)) + sg->offset; 3187 spt += j; 3188 3189 spt->app_tag = 0xffff; 3190 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3) 3191 spt->ref_tag = 0xffffffff; 3192 #endif 3193 } 3194 3195 return 0; 3196 } 3197 3198 /* check guard */ 3199 if (e_guard != a_guard) { 3200 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 3201 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba; 3202 3203 ql_log(ql_log_warn, vha, 0xe076, 3204 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n", 3205 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3206 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 3207 a_guard, e_guard, cmd); 3208 goto out; 3209 } 3210 3211 /* check ref tag */ 3212 if (e_ref_tag != a_ref_tag) { 3213 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 3214 cmd->se_cmd.bad_sector = e_ref_tag; 3215 3216 ql_log(ql_log_warn, vha, 0xe077, 3217 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n", 3218 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3219 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 3220 a_guard, e_guard, cmd); 3221 goto out; 3222 } 3223 3224 /* check appl tag */ 3225 if (e_app_tag != a_app_tag) { 3226 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 3227 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba; 3228 3229 ql_log(ql_log_warn, vha, 0xe078, 3230 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n", 3231 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3232 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 3233 a_guard, e_guard, cmd); 3234 goto out; 3235 } 3236 out: 3237 return 1; 3238 } 3239 3240 3241 /* If hardware_lock held on entry, might drop it, then reaquire */ 3242 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3243 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3244 struct imm_ntfy_from_isp *ntfy) 3245 { 3246 struct nack_to_isp *nack; 3247 struct qla_hw_data *ha = vha->hw; 3248 request_t *pkt; 3249 int ret = 0; 3250 3251 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3252 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3253 3254 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 3255 if (pkt == NULL) { 3256 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3257 "qla_target(%d): %s failed: unable to allocate " 3258 "request packet\n", vha->vp_idx, __func__); 3259 return -ENOMEM; 3260 } 3261 3262 pkt->entry_type = NOTIFY_ACK_TYPE; 3263 pkt->entry_count = 1; 3264 pkt->handle = QLA_TGT_SKIP_HANDLE; 3265 3266 nack = (struct nack_to_isp *)pkt; 3267 nack->ox_id = ntfy->ox_id; 3268 3269 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3270 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3271 nack->u.isp24.flags = ntfy->u.isp24.flags & 3272 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3273 } 3274 3275 /* terminate */ 3276 nack->u.isp24.flags |= 3277 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3278 3279 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3280 nack->u.isp24.status = ntfy->u.isp24.status; 3281 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3282 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3283 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3284 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3285 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3286 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3287 3288 qla2x00_start_iocbs(vha, vha->req); 3289 return ret; 3290 } 3291 3292 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3293 struct imm_ntfy_from_isp *imm, int ha_locked) 3294 { 3295 unsigned long flags = 0; 3296 int rc; 3297 3298 if (qlt_issue_marker(vha, ha_locked) < 0) 3299 return; 3300 3301 if (ha_locked) { 3302 rc = __qlt_send_term_imm_notif(vha, imm); 3303 3304 #if 0 /* Todo */ 3305 if (rc == -ENOMEM) 3306 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3307 #else 3308 if (rc) { 3309 } 3310 #endif 3311 goto done; 3312 } 3313 3314 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3315 rc = __qlt_send_term_imm_notif(vha, imm); 3316 3317 #if 0 /* Todo */ 3318 if (rc == -ENOMEM) 3319 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3320 #endif 3321 3322 done: 3323 if (!ha_locked) 3324 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3325 } 3326 3327 /* If hardware_lock held on entry, might drop it, then reaquire */ 3328 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3329 static int __qlt_send_term_exchange(struct scsi_qla_host *vha, 3330 struct qla_tgt_cmd *cmd, 3331 struct atio_from_isp *atio) 3332 { 3333 struct ctio7_to_24xx *ctio24; 3334 struct qla_hw_data *ha = vha->hw; 3335 request_t *pkt; 3336 int ret = 0; 3337 uint16_t temp; 3338 3339 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3340 3341 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 3342 if (pkt == NULL) { 3343 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3344 "qla_target(%d): %s failed: unable to allocate " 3345 "request packet\n", vha->vp_idx, __func__); 3346 return -ENOMEM; 3347 } 3348 3349 if (cmd != NULL) { 3350 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3351 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3352 "qla_target(%d): Terminating cmd %p with " 3353 "incorrect state %d\n", vha->vp_idx, cmd, 3354 cmd->state); 3355 } else 3356 ret = 1; 3357 } 3358 3359 vha->tgt_counters.num_term_xchg_sent++; 3360 pkt->entry_count = 1; 3361 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3362 3363 ctio24 = (struct ctio7_to_24xx *)pkt; 3364 ctio24->entry_type = CTIO_TYPE7; 3365 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3366 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3367 ctio24->vp_index = vha->vp_idx; 3368 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3369 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3370 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3371 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3372 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 3373 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 3374 CTIO7_FLAGS_TERMINATE); 3375 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3376 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3377 3378 /* Most likely, it isn't needed */ 3379 ctio24->u.status1.residual = get_unaligned((uint32_t *) 3380 &atio->u.isp24.fcp_cmnd.add_cdb[ 3381 atio->u.isp24.fcp_cmnd.add_cdb_len]); 3382 if (ctio24->u.status1.residual != 0) 3383 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 3384 3385 /* Memory Barrier */ 3386 wmb(); 3387 qla2x00_start_iocbs(vha, vha->req); 3388 return ret; 3389 } 3390 3391 static void qlt_send_term_exchange(struct scsi_qla_host *vha, 3392 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3393 int ul_abort) 3394 { 3395 unsigned long flags = 0; 3396 int rc; 3397 3398 if (qlt_issue_marker(vha, ha_locked) < 0) 3399 return; 3400 3401 if (ha_locked) { 3402 rc = __qlt_send_term_exchange(vha, cmd, atio); 3403 if (rc == -ENOMEM) 3404 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3405 goto done; 3406 } 3407 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3408 rc = __qlt_send_term_exchange(vha, cmd, atio); 3409 if (rc == -ENOMEM) 3410 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3411 3412 done: 3413 if (cmd && !ul_abort && !cmd->aborted) { 3414 if (cmd->sg_mapped) 3415 qlt_unmap_sg(vha, cmd); 3416 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3417 } 3418 3419 if (!ha_locked) 3420 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3421 3422 return; 3423 } 3424 3425 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3426 { 3427 struct list_head free_list; 3428 struct qla_tgt_cmd *cmd, *tcmd; 3429 3430 vha->hw->tgt.leak_exchg_thresh_hold = 3431 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3432 3433 cmd = tcmd = NULL; 3434 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3435 INIT_LIST_HEAD(&free_list); 3436 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3437 3438 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3439 list_del(&cmd->cmd_list); 3440 /* This cmd was never sent to TCM. There is no need 3441 * to schedule free or call free_cmd 3442 */ 3443 qlt_free_cmd(cmd); 3444 vha->hw->tgt.num_qfull_cmds_alloc--; 3445 } 3446 } 3447 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3448 } 3449 3450 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3451 { 3452 uint32_t total_leaked; 3453 3454 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3455 3456 if (vha->hw->tgt.leak_exchg_thresh_hold && 3457 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3458 3459 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3460 "Chip reset due to exchange starvation: %d/%d.\n", 3461 total_leaked, vha->hw->cur_fw_xcb_count); 3462 3463 if (IS_P3P_TYPE(vha->hw)) 3464 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3465 else 3466 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3467 qla2xxx_wake_dpc(vha); 3468 } 3469 3470 } 3471 3472 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3473 { 3474 struct qla_tgt *tgt = cmd->tgt; 3475 struct scsi_qla_host *vha = tgt->vha; 3476 struct se_cmd *se_cmd = &cmd->se_cmd; 3477 unsigned long flags; 3478 3479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3480 "qla_target(%d): terminating exchange for aborted cmd=%p " 3481 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3482 se_cmd->tag); 3483 3484 spin_lock_irqsave(&cmd->cmd_lock, flags); 3485 if (cmd->aborted) { 3486 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3487 /* 3488 * It's normal to see 2 calls in this path: 3489 * 1) XFER Rdy completion + CMD_T_ABORT 3490 * 2) TCM TMR - drain_state_list 3491 */ 3492 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 3493 "multiple abort. %p transport_state %x, t_state %x," 3494 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state, 3495 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags); 3496 return EIO; 3497 } 3498 cmd->aborted = 1; 3499 cmd->trc_flags |= TRC_ABORT; 3500 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3501 3502 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1); 3503 return 0; 3504 } 3505 EXPORT_SYMBOL(qlt_abort_cmd); 3506 3507 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3508 { 3509 struct fc_port *sess = cmd->sess; 3510 3511 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3512 "%s: se_cmd[%p] ox_id %04x\n", 3513 __func__, &cmd->se_cmd, 3514 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3515 3516 BUG_ON(cmd->cmd_in_wq); 3517 3518 if (cmd->sg_mapped) 3519 qlt_unmap_sg(cmd->vha, cmd); 3520 3521 if (!cmd->q_full) 3522 qlt_decr_num_pend_cmds(cmd->vha); 3523 3524 BUG_ON(cmd->sg_mapped); 3525 cmd->jiffies_at_free = get_jiffies_64(); 3526 if (unlikely(cmd->free_sg)) 3527 kfree(cmd->sg); 3528 3529 if (!sess || !sess->se_sess) { 3530 WARN_ON(1); 3531 return; 3532 } 3533 cmd->jiffies_at_free = get_jiffies_64(); 3534 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3535 } 3536 EXPORT_SYMBOL(qlt_free_cmd); 3537 3538 /* 3539 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3540 */ 3541 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, 3542 struct qla_tgt_cmd *cmd, uint32_t status) 3543 { 3544 int term = 0; 3545 3546 if (ctio != NULL) { 3547 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3548 term = !(c->flags & 3549 cpu_to_le16(OF_TERM_EXCH)); 3550 } else 3551 term = 1; 3552 3553 if (term) 3554 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 3555 3556 return term; 3557 } 3558 3559 /* ha->hardware_lock supposed to be held on entry */ 3560 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha, 3561 uint32_t handle) 3562 { 3563 struct qla_hw_data *ha = vha->hw; 3564 3565 handle--; 3566 if (ha->tgt.cmds[handle] != NULL) { 3567 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle]; 3568 ha->tgt.cmds[handle] = NULL; 3569 return cmd; 3570 } else 3571 return NULL; 3572 } 3573 3574 /* ha->hardware_lock supposed to be held on entry */ 3575 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3576 uint32_t handle, void *ctio) 3577 { 3578 struct qla_tgt_cmd *cmd = NULL; 3579 3580 /* Clear out internal marks */ 3581 handle &= ~(CTIO_COMPLETION_HANDLE_MARK | 3582 CTIO_INTERMEDIATE_HANDLE_MARK); 3583 3584 if (handle != QLA_TGT_NULL_HANDLE) { 3585 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) 3586 return NULL; 3587 3588 /* handle-1 is actually used */ 3589 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) { 3590 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3591 "qla_target(%d): Wrong handle %x received\n", 3592 vha->vp_idx, handle); 3593 return NULL; 3594 } 3595 cmd = qlt_get_cmd(vha, handle); 3596 if (unlikely(cmd == NULL)) { 3597 ql_dbg(ql_dbg_tgt, vha, 0xe053, 3598 "qla_target(%d): Suspicious: unable to " 3599 "find the command with handle %x\n", vha->vp_idx, 3600 handle); 3601 return NULL; 3602 } 3603 } else if (ctio != NULL) { 3604 /* We can't get loop ID from CTIO7 */ 3605 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3606 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3607 "support NULL handles\n", vha->vp_idx); 3608 return NULL; 3609 } 3610 3611 return cmd; 3612 } 3613 3614 /* hardware_lock should be held by caller. */ 3615 static void 3616 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3617 { 3618 struct qla_hw_data *ha = vha->hw; 3619 uint32_t handle; 3620 3621 if (cmd->sg_mapped) 3622 qlt_unmap_sg(vha, cmd); 3623 3624 handle = qlt_make_handle(vha); 3625 3626 /* TODO: fix debug message type and ids. */ 3627 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3628 ql_dbg(ql_dbg_io, vha, 0xff00, 3629 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle); 3630 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3631 cmd->write_data_transferred = 0; 3632 cmd->state = QLA_TGT_STATE_DATA_IN; 3633 3634 ql_dbg(ql_dbg_io, vha, 0xff01, 3635 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle); 3636 3637 ha->tgt.tgt_ops->handle_data(cmd); 3638 return; 3639 } else { 3640 ql_dbg(ql_dbg_io, vha, 0xff03, 3641 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle, 3642 cmd->state); 3643 dump_stack(); 3644 } 3645 3646 cmd->trc_flags |= TRC_FLUSH; 3647 ha->tgt.tgt_ops->free_cmd(cmd); 3648 } 3649 3650 void 3651 qlt_host_reset_handler(struct qla_hw_data *ha) 3652 { 3653 struct qla_tgt_cmd *cmd; 3654 unsigned long flags; 3655 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 3656 scsi_qla_host_t *vha = NULL; 3657 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt; 3658 uint32_t i; 3659 3660 if (!base_vha->hw->tgt.tgt_ops) 3661 return; 3662 3663 if (!tgt || qla_ini_mode_enabled(base_vha)) { 3664 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003, 3665 "Target mode disabled\n"); 3666 return; 3667 } 3668 3669 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10, 3670 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n", 3671 base_vha->dpc_flags); 3672 3673 spin_lock_irqsave(&ha->hardware_lock, flags); 3674 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) { 3675 cmd = qlt_get_cmd(base_vha, i); 3676 if (!cmd) 3677 continue; 3678 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */ 3679 vha = cmd->vha; 3680 qlt_abort_cmd_on_host_reset(vha, cmd); 3681 } 3682 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3683 } 3684 3685 3686 /* 3687 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3688 */ 3689 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, 3690 uint32_t status, void *ctio) 3691 { 3692 struct qla_hw_data *ha = vha->hw; 3693 struct se_cmd *se_cmd; 3694 struct qla_tgt_cmd *cmd; 3695 3696 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3697 /* That could happen only in case of an error/reset/abort */ 3698 if (status != CTIO_SUCCESS) { 3699 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3700 "Intermediate CTIO received" 3701 " (status %x)\n", status); 3702 } 3703 return; 3704 } 3705 3706 cmd = qlt_ctio_to_cmd(vha, handle, ctio); 3707 if (cmd == NULL) 3708 return; 3709 3710 se_cmd = &cmd->se_cmd; 3711 cmd->cmd_sent_to_fw = 0; 3712 3713 qlt_unmap_sg(vha, cmd); 3714 3715 if (unlikely(status != CTIO_SUCCESS)) { 3716 switch (status & 0xFFFF) { 3717 case CTIO_LIP_RESET: 3718 case CTIO_TARGET_RESET: 3719 case CTIO_ABORTED: 3720 /* driver request abort via Terminate exchange */ 3721 case CTIO_TIMEOUT: 3722 case CTIO_INVALID_RX_ID: 3723 /* They are OK */ 3724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3725 "qla_target(%d): CTIO with " 3726 "status %#x received, state %x, se_cmd %p, " 3727 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3728 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3729 status, cmd->state, se_cmd); 3730 break; 3731 3732 case CTIO_PORT_LOGGED_OUT: 3733 case CTIO_PORT_UNAVAILABLE: 3734 { 3735 int logged_out = 3736 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3737 3738 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3739 "qla_target(%d): CTIO with %s status %x " 3740 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3741 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3742 status, cmd->state, se_cmd); 3743 3744 if (logged_out && cmd->sess) { 3745 /* 3746 * Session is already logged out, but we need 3747 * to notify initiator, who's not aware of this 3748 */ 3749 cmd->sess->logout_on_delete = 0; 3750 cmd->sess->send_els_logo = 1; 3751 ql_dbg(ql_dbg_disc, vha, 0xffff, 3752 "%s %d %8phC post del sess\n", 3753 __func__, __LINE__, cmd->sess->port_name); 3754 3755 qlt_schedule_sess_for_deletion_lock(cmd->sess); 3756 } 3757 break; 3758 } 3759 case CTIO_DIF_ERROR: { 3760 struct ctio_crc_from_fw *crc = 3761 (struct ctio_crc_from_fw *)ctio; 3762 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3763 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n", 3764 vha->vp_idx, status, cmd->state, se_cmd, 3765 *((u64 *)&crc->actual_dif[0]), 3766 *((u64 *)&crc->expected_dif[0])); 3767 3768 if (qlt_handle_dif_error(vha, cmd, ctio)) { 3769 if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3770 /* scsi Write/xfer rdy complete */ 3771 goto skip_term; 3772 } else { 3773 /* scsi read/xmit respond complete 3774 * call handle dif to send scsi status 3775 * rather than terminate exchange. 3776 */ 3777 cmd->state = QLA_TGT_STATE_PROCESSED; 3778 ha->tgt.tgt_ops->handle_dif_err(cmd); 3779 return; 3780 } 3781 } else { 3782 /* Need to generate a SCSI good completion. 3783 * because FW did not send scsi status. 3784 */ 3785 status = 0; 3786 goto skip_term; 3787 } 3788 break; 3789 } 3790 default: 3791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3792 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3793 vha->vp_idx, status, cmd->state, se_cmd); 3794 break; 3795 } 3796 3797 3798 /* "cmd->aborted" means 3799 * cmd is already aborted/terminated, we don't 3800 * need to terminate again. The exchange is already 3801 * cleaned up/freed at FW level. Just cleanup at driver 3802 * level. 3803 */ 3804 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 3805 (!cmd->aborted)) { 3806 cmd->trc_flags |= TRC_CTIO_ERR; 3807 if (qlt_term_ctio_exchange(vha, ctio, cmd, status)) 3808 return; 3809 } 3810 } 3811 skip_term: 3812 3813 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3814 cmd->trc_flags |= TRC_CTIO_DONE; 3815 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3816 cmd->state = QLA_TGT_STATE_DATA_IN; 3817 3818 if (status == CTIO_SUCCESS) 3819 cmd->write_data_transferred = 1; 3820 3821 ha->tgt.tgt_ops->handle_data(cmd); 3822 return; 3823 } else if (cmd->aborted) { 3824 cmd->trc_flags |= TRC_CTIO_ABORTED; 3825 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 3826 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 3827 } else { 3828 cmd->trc_flags |= TRC_CTIO_STRANGE; 3829 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 3830 "qla_target(%d): A command in state (%d) should " 3831 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 3832 } 3833 3834 if (unlikely(status != CTIO_SUCCESS) && 3835 !cmd->aborted) { 3836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 3837 dump_stack(); 3838 } 3839 3840 ha->tgt.tgt_ops->free_cmd(cmd); 3841 } 3842 3843 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 3844 uint8_t task_codes) 3845 { 3846 int fcp_task_attr; 3847 3848 switch (task_codes) { 3849 case ATIO_SIMPLE_QUEUE: 3850 fcp_task_attr = TCM_SIMPLE_TAG; 3851 break; 3852 case ATIO_HEAD_OF_QUEUE: 3853 fcp_task_attr = TCM_HEAD_TAG; 3854 break; 3855 case ATIO_ORDERED_QUEUE: 3856 fcp_task_attr = TCM_ORDERED_TAG; 3857 break; 3858 case ATIO_ACA_QUEUE: 3859 fcp_task_attr = TCM_ACA_TAG; 3860 break; 3861 case ATIO_UNTAGGED: 3862 fcp_task_attr = TCM_SIMPLE_TAG; 3863 break; 3864 default: 3865 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 3866 "qla_target: unknown task code %x, use ORDERED instead\n", 3867 task_codes); 3868 fcp_task_attr = TCM_ORDERED_TAG; 3869 break; 3870 } 3871 3872 return fcp_task_attr; 3873 } 3874 3875 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 3876 uint8_t *); 3877 /* 3878 * Process context for I/O path into tcm_qla2xxx code 3879 */ 3880 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 3881 { 3882 scsi_qla_host_t *vha = cmd->vha; 3883 struct qla_hw_data *ha = vha->hw; 3884 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3885 struct fc_port *sess = cmd->sess; 3886 struct atio_from_isp *atio = &cmd->atio; 3887 unsigned char *cdb; 3888 unsigned long flags; 3889 uint32_t data_length; 3890 int ret, fcp_task_attr, data_dir, bidi = 0; 3891 3892 cmd->cmd_in_wq = 0; 3893 cmd->trc_flags |= TRC_DO_WORK; 3894 if (tgt->tgt_stop) 3895 goto out_term; 3896 3897 if (cmd->aborted) { 3898 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 3899 "cmd with tag %u is aborted\n", 3900 cmd->atio.u.isp24.exchange_addr); 3901 goto out_term; 3902 } 3903 3904 spin_lock_init(&cmd->cmd_lock); 3905 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 3906 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 3907 cmd->unpacked_lun = scsilun_to_int( 3908 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 3909 3910 if (atio->u.isp24.fcp_cmnd.rddata && 3911 atio->u.isp24.fcp_cmnd.wrdata) { 3912 bidi = 1; 3913 data_dir = DMA_TO_DEVICE; 3914 } else if (atio->u.isp24.fcp_cmnd.rddata) 3915 data_dir = DMA_FROM_DEVICE; 3916 else if (atio->u.isp24.fcp_cmnd.wrdata) 3917 data_dir = DMA_TO_DEVICE; 3918 else 3919 data_dir = DMA_NONE; 3920 3921 fcp_task_attr = qlt_get_fcp_task_attr(vha, 3922 atio->u.isp24.fcp_cmnd.task_attr); 3923 data_length = be32_to_cpu(get_unaligned((uint32_t *) 3924 &atio->u.isp24.fcp_cmnd.add_cdb[ 3925 atio->u.isp24.fcp_cmnd.add_cdb_len])); 3926 3927 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 3928 fcp_task_attr, data_dir, bidi); 3929 if (ret != 0) 3930 goto out_term; 3931 /* 3932 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 3933 */ 3934 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 3935 ha->tgt.tgt_ops->put_sess(sess); 3936 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 3937 return; 3938 3939 out_term: 3940 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 3941 /* 3942 * cmd has not sent to target yet, so pass NULL as the second 3943 * argument to qlt_send_term_exchange() and free the memory here. 3944 */ 3945 cmd->trc_flags |= TRC_DO_WORK_ERR; 3946 spin_lock_irqsave(&ha->hardware_lock, flags); 3947 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0); 3948 3949 qlt_decr_num_pend_cmds(vha); 3950 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3951 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3952 3953 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 3954 ha->tgt.tgt_ops->put_sess(sess); 3955 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 3956 } 3957 3958 static void qlt_do_work(struct work_struct *work) 3959 { 3960 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 3961 scsi_qla_host_t *vha = cmd->vha; 3962 unsigned long flags; 3963 3964 spin_lock_irqsave(&vha->cmd_list_lock, flags); 3965 list_del(&cmd->cmd_list); 3966 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 3967 3968 __qlt_do_work(cmd); 3969 } 3970 3971 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 3972 struct fc_port *sess, 3973 struct atio_from_isp *atio) 3974 { 3975 struct se_session *se_sess = sess->se_sess; 3976 struct qla_tgt_cmd *cmd; 3977 int tag; 3978 3979 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 3980 if (tag < 0) 3981 return NULL; 3982 3983 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 3984 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 3985 3986 memcpy(&cmd->atio, atio, sizeof(*atio)); 3987 cmd->state = QLA_TGT_STATE_NEW; 3988 cmd->tgt = vha->vha_tgt.qla_tgt; 3989 qlt_incr_num_pend_cmds(vha); 3990 cmd->vha = vha; 3991 cmd->se_cmd.map_tag = tag; 3992 cmd->sess = sess; 3993 cmd->loop_id = sess->loop_id; 3994 cmd->conf_compl_supported = sess->conf_compl_supported; 3995 3996 cmd->trc_flags = 0; 3997 cmd->jiffies_at_alloc = get_jiffies_64(); 3998 3999 cmd->reset_count = vha->hw->chip_reset; 4000 4001 return cmd; 4002 } 4003 4004 static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *, 4005 uint16_t); 4006 4007 static void qlt_create_sess_from_atio(struct work_struct *work) 4008 { 4009 struct qla_tgt_sess_op *op = container_of(work, 4010 struct qla_tgt_sess_op, work); 4011 scsi_qla_host_t *vha = op->vha; 4012 struct qla_hw_data *ha = vha->hw; 4013 struct fc_port *sess; 4014 struct qla_tgt_cmd *cmd; 4015 unsigned long flags; 4016 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id; 4017 4018 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4019 list_del(&op->cmd_list); 4020 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4021 4022 if (op->aborted) { 4023 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083, 4024 "sess_op with tag %u is aborted\n", 4025 op->atio.u.isp24.exchange_addr); 4026 goto out_term; 4027 } 4028 4029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, 4030 "qla_target(%d): Unable to find wwn login" 4031 " (s_id %x:%x:%x), trying to create it manually\n", 4032 vha->vp_idx, s_id[0], s_id[1], s_id[2]); 4033 4034 if (op->atio.u.raw.entry_count > 1) { 4035 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, 4036 "Dropping multy entry atio %p\n", &op->atio); 4037 goto out_term; 4038 } 4039 4040 sess = qlt_make_local_sess(vha, s_id); 4041 /* sess has an extra creation ref. */ 4042 4043 if (!sess) 4044 goto out_term; 4045 /* 4046 * Now obtain a pre-allocated session tag using the original op->atio 4047 * packet header, and dispatch into __qlt_do_work() using the existing 4048 * process context. 4049 */ 4050 cmd = qlt_get_tag(vha, sess, &op->atio); 4051 if (!cmd) { 4052 spin_lock_irqsave(&ha->hardware_lock, flags); 4053 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY); 4054 ha->tgt.tgt_ops->put_sess(sess); 4055 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4056 kfree(op); 4057 return; 4058 } 4059 4060 /* 4061 * __qlt_do_work() will call qlt_put_sess() to release 4062 * the extra reference taken above by qlt_make_local_sess() 4063 */ 4064 __qlt_do_work(cmd); 4065 kfree(op); 4066 return; 4067 out_term: 4068 spin_lock_irqsave(&ha->hardware_lock, flags); 4069 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0); 4070 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4071 kfree(op); 4072 } 4073 4074 /* ha->hardware_lock supposed to be held on entry */ 4075 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4076 struct atio_from_isp *atio) 4077 { 4078 struct qla_hw_data *ha = vha->hw; 4079 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4080 struct fc_port *sess; 4081 struct qla_tgt_cmd *cmd; 4082 unsigned long flags; 4083 4084 if (unlikely(tgt->tgt_stop)) { 4085 ql_dbg(ql_dbg_io, vha, 0x3061, 4086 "New command while device %p is shutting down\n", tgt); 4087 return -EFAULT; 4088 } 4089 4090 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4091 if (unlikely(!sess)) { 4092 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op), 4093 GFP_ATOMIC); 4094 if (!op) 4095 return -ENOMEM; 4096 4097 memcpy(&op->atio, atio, sizeof(*atio)); 4098 op->vha = vha; 4099 4100 spin_lock(&vha->cmd_list_lock); 4101 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list); 4102 spin_unlock(&vha->cmd_list_lock); 4103 4104 INIT_WORK(&op->work, qlt_create_sess_from_atio); 4105 queue_work(qla_tgt_wq, &op->work); 4106 return 0; 4107 } 4108 4109 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4110 * session deletion, but it's still in sess_del_work wq */ 4111 if (sess->deleted) { 4112 ql_dbg(ql_dbg_io, vha, 0x3061, 4113 "New command while old session %p is being deleted\n", 4114 sess); 4115 return -EFAULT; 4116 } 4117 4118 /* 4119 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4120 */ 4121 if (!kref_get_unless_zero(&sess->sess_kref)) { 4122 ql_dbg(ql_dbg_tgt, vha, 0xffff, 4123 "%s: kref_get fail, %8phC oxid %x \n", 4124 __func__, sess->port_name, 4125 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4126 return -EFAULT; 4127 } 4128 4129 cmd = qlt_get_tag(vha, sess, atio); 4130 if (!cmd) { 4131 ql_dbg(ql_dbg_io, vha, 0x3062, 4132 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4133 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4134 ha->tgt.tgt_ops->put_sess(sess); 4135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4136 return -ENOMEM; 4137 } 4138 4139 cmd->cmd_in_wq = 1; 4140 cmd->trc_flags |= TRC_NEW_CMD; 4141 cmd->se_cmd.cpuid = ha->msix_count ? 4142 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND; 4143 4144 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4145 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4146 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4147 4148 INIT_WORK(&cmd->work, qlt_do_work); 4149 if (ha->msix_count) { 4150 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4151 queue_work_on(smp_processor_id(), qla_tgt_wq, 4152 &cmd->work); 4153 else 4154 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4155 &cmd->work); 4156 } else { 4157 queue_work(qla_tgt_wq, &cmd->work); 4158 } 4159 return 0; 4160 4161 } 4162 4163 /* ha->hardware_lock supposed to be held on entry */ 4164 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4165 int fn, void *iocb, int flags) 4166 { 4167 struct scsi_qla_host *vha = sess->vha; 4168 struct qla_hw_data *ha = vha->hw; 4169 struct qla_tgt_mgmt_cmd *mcmd; 4170 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4171 int res; 4172 4173 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4174 if (!mcmd) { 4175 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4176 "qla_target(%d): Allocation of management " 4177 "command failed, some commands and their data could " 4178 "leak\n", vha->vp_idx); 4179 return -ENOMEM; 4180 } 4181 memset(mcmd, 0, sizeof(*mcmd)); 4182 mcmd->sess = sess; 4183 4184 if (iocb) { 4185 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4186 sizeof(mcmd->orig_iocb.imm_ntfy)); 4187 } 4188 mcmd->tmr_func = fn; 4189 mcmd->flags = flags; 4190 mcmd->reset_count = vha->hw->chip_reset; 4191 4192 switch (fn) { 4193 case QLA_TGT_LUN_RESET: 4194 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4195 break; 4196 } 4197 4198 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0); 4199 if (res != 0) { 4200 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, 4201 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", 4202 sess->vha->vp_idx, res); 4203 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4204 return -EFAULT; 4205 } 4206 4207 return 0; 4208 } 4209 4210 /* ha->hardware_lock supposed to be held on entry */ 4211 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4212 { 4213 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4214 struct qla_hw_data *ha = vha->hw; 4215 struct qla_tgt *tgt; 4216 struct fc_port *sess; 4217 uint32_t lun, unpacked_lun; 4218 int fn; 4219 unsigned long flags; 4220 4221 tgt = vha->vha_tgt.qla_tgt; 4222 4223 lun = a->u.isp24.fcp_cmnd.lun; 4224 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4225 4226 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4227 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4228 a->u.isp24.fcp_hdr.s_id); 4229 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4230 4231 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 4232 4233 if (!sess) { 4234 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, 4235 "qla_target(%d): task mgmt fn 0x%x for " 4236 "non-existant session\n", vha->vp_idx, fn); 4237 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, 4238 sizeof(struct atio_from_isp)); 4239 } 4240 4241 if (sess->deleted) 4242 return -EFAULT; 4243 4244 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4245 } 4246 4247 /* ha->hardware_lock supposed to be held on entry */ 4248 static int __qlt_abort_task(struct scsi_qla_host *vha, 4249 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4250 { 4251 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4252 struct qla_hw_data *ha = vha->hw; 4253 struct qla_tgt_mgmt_cmd *mcmd; 4254 uint32_t lun, unpacked_lun; 4255 int rc; 4256 4257 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4258 if (mcmd == NULL) { 4259 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4260 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4261 vha->vp_idx, __func__); 4262 return -ENOMEM; 4263 } 4264 memset(mcmd, 0, sizeof(*mcmd)); 4265 4266 mcmd->sess = sess; 4267 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4268 sizeof(mcmd->orig_iocb.imm_ntfy)); 4269 4270 lun = a->u.isp24.fcp_cmnd.lun; 4271 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 4272 mcmd->reset_count = vha->hw->chip_reset; 4273 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4274 4275 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4276 le16_to_cpu(iocb->u.isp2x.seq_id)); 4277 if (rc != 0) { 4278 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4279 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4280 vha->vp_idx, rc); 4281 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4282 return -EFAULT; 4283 } 4284 4285 return 0; 4286 } 4287 4288 /* ha->hardware_lock supposed to be held on entry */ 4289 static int qlt_abort_task(struct scsi_qla_host *vha, 4290 struct imm_ntfy_from_isp *iocb) 4291 { 4292 struct qla_hw_data *ha = vha->hw; 4293 struct fc_port *sess; 4294 int loop_id; 4295 unsigned long flags; 4296 4297 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4298 4299 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4300 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4301 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4302 4303 if (sess == NULL) { 4304 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4305 "qla_target(%d): task abort for unexisting " 4306 "session\n", vha->vp_idx); 4307 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4308 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4309 } 4310 4311 return __qlt_abort_task(vha, iocb, sess); 4312 } 4313 4314 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4315 { 4316 if (rc != MBS_COMMAND_COMPLETE) { 4317 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4318 "%s: se_sess %p / sess %p from" 4319 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4320 " LOGO failed: %#x\n", 4321 __func__, 4322 fcport->se_sess, 4323 fcport, 4324 fcport->port_name, fcport->loop_id, 4325 fcport->d_id.b.domain, fcport->d_id.b.area, 4326 fcport->d_id.b.al_pa, rc); 4327 } 4328 4329 fcport->logout_completed = 1; 4330 } 4331 4332 /* 4333 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4334 * 4335 * Schedules sessions with matching port_id/loop_id but different wwn for 4336 * deletion. Returns existing session with matching wwn if present. 4337 * Null otherwise. 4338 */ 4339 struct fc_port * 4340 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4341 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4342 { 4343 struct fc_port *sess = NULL, *other_sess; 4344 uint64_t other_wwn; 4345 4346 *conflict_sess = NULL; 4347 4348 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4349 4350 other_wwn = wwn_to_u64(other_sess->port_name); 4351 4352 if (wwn == other_wwn) { 4353 WARN_ON(sess); 4354 sess = other_sess; 4355 continue; 4356 } 4357 4358 /* find other sess with nport_id collision */ 4359 if (port_id.b24 == other_sess->d_id.b24) { 4360 if (loop_id != other_sess->loop_id) { 4361 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4362 "Invalidating sess %p loop_id %d wwn %llx.\n", 4363 other_sess, other_sess->loop_id, other_wwn); 4364 4365 /* 4366 * logout_on_delete is set by default, but another 4367 * session that has the same s_id/loop_id combo 4368 * might have cleared it when requested this session 4369 * deletion, so don't touch it 4370 */ 4371 qlt_schedule_sess_for_deletion(other_sess, true); 4372 } else { 4373 /* 4374 * Another wwn used to have our s_id/loop_id 4375 * kill the session, but don't free the loop_id 4376 */ 4377 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff, 4378 "Invalidating sess %p loop_id %d wwn %llx.\n", 4379 other_sess, other_sess->loop_id, other_wwn); 4380 4381 4382 other_sess->keep_nport_handle = 1; 4383 *conflict_sess = other_sess; 4384 qlt_schedule_sess_for_deletion(other_sess, 4385 true); 4386 } 4387 continue; 4388 } 4389 4390 /* find other sess with nport handle collision */ 4391 if ((loop_id == other_sess->loop_id) && 4392 (loop_id != FC_NO_LOOP_ID)) { 4393 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4394 "Invalidating sess %p loop_id %d wwn %llx.\n", 4395 other_sess, other_sess->loop_id, other_wwn); 4396 4397 /* Same loop_id but different s_id 4398 * Ok to kill and logout */ 4399 qlt_schedule_sess_for_deletion(other_sess, true); 4400 } 4401 } 4402 4403 return sess; 4404 } 4405 4406 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4407 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4408 { 4409 struct qla_tgt_sess_op *op; 4410 struct qla_tgt_cmd *cmd; 4411 uint32_t key; 4412 int count = 0; 4413 4414 key = (((u32)s_id->b.domain << 16) | 4415 ((u32)s_id->b.area << 8) | 4416 ((u32)s_id->b.al_pa)); 4417 4418 spin_lock(&vha->cmd_list_lock); 4419 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4420 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4421 4422 if (op_key == key) { 4423 op->aborted = true; 4424 count++; 4425 } 4426 } 4427 4428 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4429 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4430 if (op_key == key) { 4431 op->aborted = true; 4432 count++; 4433 } 4434 } 4435 4436 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4437 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4438 if (cmd_key == key) { 4439 cmd->aborted = 1; 4440 count++; 4441 } 4442 } 4443 spin_unlock(&vha->cmd_list_lock); 4444 4445 return count; 4446 } 4447 4448 /* 4449 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4450 */ 4451 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4452 struct imm_ntfy_from_isp *iocb) 4453 { 4454 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4455 struct qla_hw_data *ha = vha->hw; 4456 struct fc_port *sess = NULL, *conflict_sess = NULL; 4457 uint64_t wwn; 4458 port_id_t port_id; 4459 uint16_t loop_id; 4460 uint16_t wd3_lo; 4461 int res = 0; 4462 struct qlt_plogi_ack_t *pla; 4463 unsigned long flags; 4464 4465 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4466 4467 port_id.b.domain = iocb->u.isp24.port_id[2]; 4468 port_id.b.area = iocb->u.isp24.port_id[1]; 4469 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4470 port_id.b.rsvd_1 = 0; 4471 4472 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4473 4474 ql_dbg(ql_dbg_disc, vha, 0xf026, 4475 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4476 vha->vp_idx, iocb->u.isp24.port_id[2], 4477 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4478 iocb->u.isp24.status_subcode, loop_id, 4479 iocb->u.isp24.port_name); 4480 4481 /* res = 1 means ack at the end of thread 4482 * res = 0 means ack async/later. 4483 */ 4484 switch (iocb->u.isp24.status_subcode) { 4485 case ELS_PLOGI: 4486 4487 /* Mark all stale commands in qla_tgt_wq for deletion */ 4488 abort_cmds_for_s_id(vha, &port_id); 4489 4490 if (wwn) { 4491 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4492 sess = qlt_find_sess_invalidate_other(vha, wwn, 4493 port_id, loop_id, &conflict_sess); 4494 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4495 } 4496 4497 if (IS_SW_RESV_ADDR(port_id)) { 4498 res = 1; 4499 break; 4500 } 4501 4502 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4503 if (!pla) { 4504 qlt_send_term_imm_notif(vha, iocb, 1); 4505 break; 4506 } 4507 4508 res = 0; 4509 4510 if (conflict_sess) { 4511 conflict_sess->login_gen++; 4512 qlt_plogi_ack_link(vha, pla, conflict_sess, 4513 QLT_PLOGI_LINK_CONFLICT); 4514 } 4515 4516 if (!sess) { 4517 pla->ref_count++; 4518 qla24xx_post_newsess_work(vha, &port_id, 4519 iocb->u.isp24.port_name, pla); 4520 res = 0; 4521 break; 4522 } 4523 4524 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4525 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4526 sess->d_id = port_id; 4527 sess->login_gen++; 4528 4529 switch (sess->disc_state) { 4530 case DSC_DELETED: 4531 qlt_plogi_ack_unref(vha, pla); 4532 break; 4533 4534 default: 4535 /* 4536 * Under normal circumstances we want to release nport handle 4537 * during LOGO process to avoid nport handle leaks inside FW. 4538 * The exception is when LOGO is done while another PLOGI with 4539 * the same nport handle is waiting as might be the case here. 4540 * Note: there is always a possibily of a race where session 4541 * deletion has already started for other reasons (e.g. ACL 4542 * removal) and now PLOGI arrives: 4543 * 1. if PLOGI arrived in FW after nport handle has been freed, 4544 * FW must have assigned this PLOGI a new/same handle and we 4545 * can proceed ACK'ing it as usual when session deletion 4546 * completes. 4547 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4548 * bit reached it, the handle has now been released. We'll 4549 * get an error when we ACK this PLOGI. Nothing will be sent 4550 * back to initiator. Initiator should eventually retry 4551 * PLOGI and situation will correct itself. 4552 */ 4553 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4554 (sess->d_id.b24 == port_id.b24)); 4555 4556 ql_dbg(ql_dbg_disc, vha, 0xffff, 4557 "%s %d %8phC post del sess\n", 4558 __func__, __LINE__, sess->port_name); 4559 4560 4561 qlt_schedule_sess_for_deletion_lock(sess); 4562 break; 4563 } 4564 4565 break; 4566 4567 case ELS_PRLI: 4568 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4569 4570 if (wwn) { 4571 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4572 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4573 loop_id, &conflict_sess); 4574 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4575 } 4576 4577 if (conflict_sess) { 4578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4579 "PRLI with conflicting sess %p port %8phC\n", 4580 conflict_sess, conflict_sess->port_name); 4581 qlt_send_term_imm_notif(vha, iocb, 1); 4582 res = 0; 4583 break; 4584 } 4585 4586 if (sess != NULL) { 4587 if (sess->fw_login_state == DSC_LS_PLOGI_PEND) { 4588 /* 4589 * Impatient initiator sent PRLI before last 4590 * PLOGI could finish. Will force him to re-try, 4591 * while last one finishes. 4592 */ 4593 ql_log(ql_log_warn, sess->vha, 0xf095, 4594 "sess %p PRLI received, before plogi ack.\n", 4595 sess); 4596 qlt_send_term_imm_notif(vha, iocb, 1); 4597 res = 0; 4598 break; 4599 } 4600 4601 /* 4602 * This shouldn't happen under normal circumstances, 4603 * since we have deleted the old session during PLOGI 4604 */ 4605 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4606 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4607 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4608 4609 sess->local = 0; 4610 sess->loop_id = loop_id; 4611 sess->d_id = port_id; 4612 sess->fw_login_state = DSC_LS_PRLI_PEND; 4613 4614 if (wd3_lo & BIT_7) 4615 sess->conf_compl_supported = 1; 4616 4617 if ((wd3_lo & BIT_4) == 0) 4618 sess->port_type = FCT_INITIATOR; 4619 else 4620 sess->port_type = FCT_TARGET; 4621 } 4622 res = 1; /* send notify ack */ 4623 4624 /* Make session global (not used in fabric mode) */ 4625 if (ha->current_topology != ISP_CFG_F) { 4626 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4627 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4628 qla2xxx_wake_dpc(vha); 4629 } else { 4630 if (sess) { 4631 ql_dbg(ql_dbg_disc, vha, 0xffff, 4632 "%s %d %8phC post nack\n", 4633 __func__, __LINE__, sess->port_name); 4634 4635 qla24xx_post_nack_work(vha, sess, iocb, 4636 SRB_NACK_PRLI); 4637 res = 0; 4638 } 4639 } 4640 break; 4641 4642 4643 case ELS_TPRLO: 4644 if (le16_to_cpu(iocb->u.isp24.flags) & 4645 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 4646 loop_id = 0xFFFF; 4647 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 4648 res = 1; 4649 break; 4650 } 4651 /* drop through */ 4652 case ELS_LOGO: 4653 case ELS_PRLO: 4654 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4655 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 4656 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4657 4658 if (sess) { 4659 sess->login_gen++; 4660 sess->fw_login_state = DSC_LS_LOGO_PEND; 4661 sess->logo_ack_needed = 1; 4662 memcpy(sess->iocb, iocb, IOCB_SIZE); 4663 } 4664 4665 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4666 4667 ql_dbg(ql_dbg_disc, vha, 0xffff, 4668 "%s: logo %llx res %d sess %p ", 4669 __func__, wwn, res, sess); 4670 if (res == 0) { 4671 /* 4672 * cmd went upper layer, look for qlt_xmit_tm_rsp() 4673 * for LOGO_ACK & sess delete 4674 */ 4675 BUG_ON(!sess); 4676 res = 0; 4677 } else { 4678 /* cmd did not go to upper layer. */ 4679 if (sess) { 4680 qlt_schedule_sess_for_deletion_lock(sess); 4681 res = 0; 4682 } 4683 /* else logo will be ack */ 4684 } 4685 break; 4686 case ELS_PDISC: 4687 case ELS_ADISC: 4688 { 4689 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4690 if (tgt->link_reinit_iocb_pending) { 4691 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4692 0, 0, 0, 0, 0, 0); 4693 tgt->link_reinit_iocb_pending = 0; 4694 } 4695 4696 sess = qla2x00_find_fcport_by_wwpn(vha, 4697 iocb->u.isp24.port_name, 1); 4698 if (sess) { 4699 ql_dbg(ql_dbg_disc, vha, 0xffff, 4700 "sess %p lid %d|%d DS %d LS %d\n", 4701 sess, sess->loop_id, loop_id, 4702 sess->disc_state, sess->fw_login_state); 4703 } 4704 4705 res = 1; /* send notify ack */ 4706 break; 4707 } 4708 4709 case ELS_FLOGI: /* should never happen */ 4710 default: 4711 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 4712 "qla_target(%d): Unsupported ELS command %x " 4713 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 4714 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4715 break; 4716 } 4717 4718 return res; 4719 } 4720 4721 /* 4722 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4723 */ 4724 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 4725 struct imm_ntfy_from_isp *iocb) 4726 { 4727 struct qla_hw_data *ha = vha->hw; 4728 uint32_t add_flags = 0; 4729 int send_notify_ack = 1; 4730 uint16_t status; 4731 4732 status = le16_to_cpu(iocb->u.isp2x.status); 4733 switch (status) { 4734 case IMM_NTFY_LIP_RESET: 4735 { 4736 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 4737 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 4738 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 4739 iocb->u.isp24.status_subcode); 4740 4741 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4742 send_notify_ack = 0; 4743 break; 4744 } 4745 4746 case IMM_NTFY_LIP_LINK_REINIT: 4747 { 4748 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4749 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 4750 "qla_target(%d): LINK REINIT (loop %#x, " 4751 "subcode %x)\n", vha->vp_idx, 4752 le16_to_cpu(iocb->u.isp24.nport_handle), 4753 iocb->u.isp24.status_subcode); 4754 if (tgt->link_reinit_iocb_pending) { 4755 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4756 0, 0, 0, 0, 0, 0); 4757 } 4758 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 4759 tgt->link_reinit_iocb_pending = 1; 4760 /* 4761 * QLogic requires to wait after LINK REINIT for possible 4762 * PDISC or ADISC ELS commands 4763 */ 4764 send_notify_ack = 0; 4765 break; 4766 } 4767 4768 case IMM_NTFY_PORT_LOGOUT: 4769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 4770 "qla_target(%d): Port logout (loop " 4771 "%#x, subcode %x)\n", vha->vp_idx, 4772 le16_to_cpu(iocb->u.isp24.nport_handle), 4773 iocb->u.isp24.status_subcode); 4774 4775 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 4776 send_notify_ack = 0; 4777 /* The sessions will be cleared in the callback, if needed */ 4778 break; 4779 4780 case IMM_NTFY_GLBL_TPRLO: 4781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 4782 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 4783 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4784 send_notify_ack = 0; 4785 /* The sessions will be cleared in the callback, if needed */ 4786 break; 4787 4788 case IMM_NTFY_PORT_CONFIG: 4789 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 4790 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 4791 status); 4792 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4793 send_notify_ack = 0; 4794 /* The sessions will be cleared in the callback, if needed */ 4795 break; 4796 4797 case IMM_NTFY_GLBL_LOGO: 4798 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 4799 "qla_target(%d): Link failure detected\n", 4800 vha->vp_idx); 4801 /* I_T nexus loss */ 4802 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4803 send_notify_ack = 0; 4804 break; 4805 4806 case IMM_NTFY_IOCB_OVERFLOW: 4807 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 4808 "qla_target(%d): Cannot provide requested " 4809 "capability (IOCB overflowed the immediate notify " 4810 "resource count)\n", vha->vp_idx); 4811 break; 4812 4813 case IMM_NTFY_ABORT_TASK: 4814 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 4815 "qla_target(%d): Abort Task (S %08x I %#x -> " 4816 "L %#x)\n", vha->vp_idx, 4817 le16_to_cpu(iocb->u.isp2x.seq_id), 4818 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 4819 le16_to_cpu(iocb->u.isp2x.lun)); 4820 if (qlt_abort_task(vha, iocb) == 0) 4821 send_notify_ack = 0; 4822 break; 4823 4824 case IMM_NTFY_RESOURCE: 4825 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 4826 "qla_target(%d): Out of resources, host %ld\n", 4827 vha->vp_idx, vha->host_no); 4828 break; 4829 4830 case IMM_NTFY_MSG_RX: 4831 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 4832 "qla_target(%d): Immediate notify task %x\n", 4833 vha->vp_idx, iocb->u.isp2x.task_flags); 4834 if (qlt_handle_task_mgmt(vha, iocb) == 0) 4835 send_notify_ack = 0; 4836 break; 4837 4838 case IMM_NTFY_ELS: 4839 if (qlt_24xx_handle_els(vha, iocb) == 0) 4840 send_notify_ack = 0; 4841 break; 4842 default: 4843 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 4844 "qla_target(%d): Received unknown immediate " 4845 "notify status %x\n", vha->vp_idx, status); 4846 break; 4847 } 4848 4849 if (send_notify_ack) 4850 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0); 4851 } 4852 4853 /* 4854 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4855 * This function sends busy to ISP 2xxx or 24xx. 4856 */ 4857 static int __qlt_send_busy(struct scsi_qla_host *vha, 4858 struct atio_from_isp *atio, uint16_t status) 4859 { 4860 struct ctio7_to_24xx *ctio24; 4861 struct qla_hw_data *ha = vha->hw; 4862 request_t *pkt; 4863 struct fc_port *sess = NULL; 4864 unsigned long flags; 4865 4866 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4867 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4868 atio->u.isp24.fcp_hdr.s_id); 4869 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4870 if (!sess) { 4871 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 4872 return 0; 4873 } 4874 /* Sending marker isn't necessary, since we called from ISR */ 4875 4876 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 4877 if (!pkt) { 4878 ql_dbg(ql_dbg_io, vha, 0x3063, 4879 "qla_target(%d): %s failed: unable to allocate " 4880 "request packet", vha->vp_idx, __func__); 4881 return -ENOMEM; 4882 } 4883 4884 vha->tgt_counters.num_q_full_sent++; 4885 pkt->entry_count = 1; 4886 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 4887 4888 ctio24 = (struct ctio7_to_24xx *)pkt; 4889 ctio24->entry_type = CTIO_TYPE7; 4890 ctio24->nport_handle = sess->loop_id; 4891 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 4892 ctio24->vp_index = vha->vp_idx; 4893 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 4894 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 4895 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 4896 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 4897 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 4898 cpu_to_le16( 4899 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 4900 CTIO7_FLAGS_DONT_RET_CTIO); 4901 /* 4902 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 4903 * if the explicit conformation is used. 4904 */ 4905 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 4906 ctio24->u.status1.scsi_status = cpu_to_le16(status); 4907 /* Memory Barrier */ 4908 wmb(); 4909 qla2x00_start_iocbs(vha, vha->req); 4910 return 0; 4911 } 4912 4913 /* 4914 * This routine is used to allocate a command for either a QFull condition 4915 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 4916 * out previously. 4917 */ 4918 static void 4919 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 4920 struct atio_from_isp *atio, uint16_t status, int qfull) 4921 { 4922 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4923 struct qla_hw_data *ha = vha->hw; 4924 struct fc_port *sess; 4925 struct se_session *se_sess; 4926 struct qla_tgt_cmd *cmd; 4927 int tag; 4928 4929 if (unlikely(tgt->tgt_stop)) { 4930 ql_dbg(ql_dbg_io, vha, 0x300a, 4931 "New command while device %p is shutting down\n", tgt); 4932 return; 4933 } 4934 4935 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 4936 vha->hw->tgt.num_qfull_cmds_dropped++; 4937 if (vha->hw->tgt.num_qfull_cmds_dropped > 4938 vha->qla_stats.stat_max_qfull_cmds_dropped) 4939 vha->qla_stats.stat_max_qfull_cmds_dropped = 4940 vha->hw->tgt.num_qfull_cmds_dropped; 4941 4942 ql_dbg(ql_dbg_io, vha, 0x3068, 4943 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 4944 vha->vp_idx, __func__, 4945 vha->hw->tgt.num_qfull_cmds_dropped); 4946 4947 qlt_chk_exch_leak_thresh_hold(vha); 4948 return; 4949 } 4950 4951 sess = ha->tgt.tgt_ops->find_sess_by_s_id 4952 (vha, atio->u.isp24.fcp_hdr.s_id); 4953 if (!sess) 4954 return; 4955 4956 se_sess = sess->se_sess; 4957 4958 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 4959 if (tag < 0) 4960 return; 4961 4962 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4963 if (!cmd) { 4964 ql_dbg(ql_dbg_io, vha, 0x3009, 4965 "qla_target(%d): %s: Allocation of cmd failed\n", 4966 vha->vp_idx, __func__); 4967 4968 vha->hw->tgt.num_qfull_cmds_dropped++; 4969 if (vha->hw->tgt.num_qfull_cmds_dropped > 4970 vha->qla_stats.stat_max_qfull_cmds_dropped) 4971 vha->qla_stats.stat_max_qfull_cmds_dropped = 4972 vha->hw->tgt.num_qfull_cmds_dropped; 4973 4974 qlt_chk_exch_leak_thresh_hold(vha); 4975 return; 4976 } 4977 4978 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4979 4980 qlt_incr_num_pend_cmds(vha); 4981 INIT_LIST_HEAD(&cmd->cmd_list); 4982 memcpy(&cmd->atio, atio, sizeof(*atio)); 4983 4984 cmd->tgt = vha->vha_tgt.qla_tgt; 4985 cmd->vha = vha; 4986 cmd->reset_count = vha->hw->chip_reset; 4987 cmd->q_full = 1; 4988 4989 if (qfull) { 4990 cmd->q_full = 1; 4991 /* NOTE: borrowing the state field to carry the status */ 4992 cmd->state = status; 4993 } else 4994 cmd->term_exchg = 1; 4995 4996 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 4997 4998 vha->hw->tgt.num_qfull_cmds_alloc++; 4999 if (vha->hw->tgt.num_qfull_cmds_alloc > 5000 vha->qla_stats.stat_max_qfull_cmds_alloc) 5001 vha->qla_stats.stat_max_qfull_cmds_alloc = 5002 vha->hw->tgt.num_qfull_cmds_alloc; 5003 } 5004 5005 int 5006 qlt_free_qfull_cmds(struct scsi_qla_host *vha) 5007 { 5008 struct qla_hw_data *ha = vha->hw; 5009 unsigned long flags; 5010 struct qla_tgt_cmd *cmd, *tcmd; 5011 struct list_head free_list; 5012 int rc = 0; 5013 5014 if (list_empty(&ha->tgt.q_full_list)) 5015 return 0; 5016 5017 INIT_LIST_HEAD(&free_list); 5018 5019 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 5020 5021 if (list_empty(&ha->tgt.q_full_list)) { 5022 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5023 return 0; 5024 } 5025 5026 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) { 5027 if (cmd->q_full) 5028 /* cmd->state is a borrowed field to hold status */ 5029 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state); 5030 else if (cmd->term_exchg) 5031 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio); 5032 5033 if (rc == -ENOMEM) 5034 break; 5035 5036 if (cmd->q_full) 5037 ql_dbg(ql_dbg_io, vha, 0x3006, 5038 "%s: busy sent for ox_id[%04x]\n", __func__, 5039 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5040 else if (cmd->term_exchg) 5041 ql_dbg(ql_dbg_io, vha, 0x3007, 5042 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5043 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5044 else 5045 ql_dbg(ql_dbg_io, vha, 0x3008, 5046 "%s: Unexpected cmd in QFull list %p\n", __func__, 5047 cmd); 5048 5049 list_del(&cmd->cmd_list); 5050 list_add_tail(&cmd->cmd_list, &free_list); 5051 5052 /* piggy back on hardware_lock for protection */ 5053 vha->hw->tgt.num_qfull_cmds_alloc--; 5054 } 5055 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5056 5057 cmd = NULL; 5058 5059 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5060 list_del(&cmd->cmd_list); 5061 /* This cmd was never sent to TCM. There is no need 5062 * to schedule free or call free_cmd 5063 */ 5064 qlt_free_cmd(cmd); 5065 } 5066 return rc; 5067 } 5068 5069 static void 5070 qlt_send_busy(struct scsi_qla_host *vha, 5071 struct atio_from_isp *atio, uint16_t status) 5072 { 5073 int rc = 0; 5074 5075 rc = __qlt_send_busy(vha, atio, status); 5076 if (rc == -ENOMEM) 5077 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5078 } 5079 5080 static int 5081 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, 5082 struct atio_from_isp *atio) 5083 { 5084 struct qla_hw_data *ha = vha->hw; 5085 uint16_t status; 5086 5087 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5088 return 0; 5089 5090 status = temp_sam_status; 5091 qlt_send_busy(vha, atio, status); 5092 return 1; 5093 } 5094 5095 /* ha->hardware_lock supposed to be held on entry */ 5096 /* called via callback from qla2xxx */ 5097 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5098 struct atio_from_isp *atio, uint8_t ha_locked) 5099 { 5100 struct qla_hw_data *ha = vha->hw; 5101 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5102 int rc; 5103 unsigned long flags; 5104 5105 if (unlikely(tgt == NULL)) { 5106 ql_dbg(ql_dbg_io, vha, 0x3064, 5107 "ATIO pkt, but no tgt (ha %p)", ha); 5108 return; 5109 } 5110 /* 5111 * In tgt_stop mode we also should allow all requests to pass. 5112 * Otherwise, some commands can stuck. 5113 */ 5114 5115 tgt->atio_irq_cmd_count++; 5116 5117 switch (atio->u.raw.entry_type) { 5118 case ATIO_TYPE7: 5119 if (unlikely(atio->u.isp24.exchange_addr == 5120 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5121 ql_dbg(ql_dbg_io, vha, 0x3065, 5122 "qla_target(%d): ATIO_TYPE7 " 5123 "received with UNKNOWN exchange address, " 5124 "sending QUEUE_FULL\n", vha->vp_idx); 5125 if (!ha_locked) 5126 spin_lock_irqsave(&ha->hardware_lock, flags); 5127 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL); 5128 if (!ha_locked) 5129 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5130 break; 5131 } 5132 5133 5134 5135 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5136 rc = qlt_chk_qfull_thresh_hold(vha, atio); 5137 if (rc != 0) { 5138 tgt->atio_irq_cmd_count--; 5139 return; 5140 } 5141 rc = qlt_handle_cmd_for_atio(vha, atio); 5142 } else { 5143 rc = qlt_handle_task_mgmt(vha, atio); 5144 } 5145 if (unlikely(rc != 0)) { 5146 if (rc == -ESRCH) { 5147 if (!ha_locked) 5148 spin_lock_irqsave 5149 (&ha->hardware_lock, flags); 5150 5151 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5152 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5153 #else 5154 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5155 #endif 5156 5157 if (!ha_locked) 5158 spin_unlock_irqrestore 5159 (&ha->hardware_lock, flags); 5160 5161 } else { 5162 if (tgt->tgt_stop) { 5163 ql_dbg(ql_dbg_tgt, vha, 0xe059, 5164 "qla_target: Unable to send " 5165 "command to target for req, " 5166 "ignoring.\n"); 5167 } else { 5168 ql_dbg(ql_dbg_tgt, vha, 0xe05a, 5169 "qla_target(%d): Unable to send " 5170 "command to target, sending BUSY " 5171 "status.\n", vha->vp_idx); 5172 if (!ha_locked) 5173 spin_lock_irqsave( 5174 &ha->hardware_lock, flags); 5175 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5176 if (!ha_locked) 5177 spin_unlock_irqrestore( 5178 &ha->hardware_lock, flags); 5179 } 5180 } 5181 } 5182 break; 5183 5184 case IMMED_NOTIFY_TYPE: 5185 { 5186 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5187 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5188 "qla_target(%d): Received ATIO packet %x " 5189 "with error status %x\n", vha->vp_idx, 5190 atio->u.raw.entry_type, 5191 atio->u.isp2x.entry_status); 5192 break; 5193 } 5194 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5195 5196 if (!ha_locked) 5197 spin_lock_irqsave(&ha->hardware_lock, flags); 5198 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5199 if (!ha_locked) 5200 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5201 break; 5202 } 5203 5204 default: 5205 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5206 "qla_target(%d): Received unknown ATIO atio " 5207 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5208 break; 5209 } 5210 5211 tgt->atio_irq_cmd_count--; 5212 } 5213 5214 /* ha->hardware_lock supposed to be held on entry */ 5215 /* called via callback from qla2xxx */ 5216 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) 5217 { 5218 struct qla_hw_data *ha = vha->hw; 5219 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5220 5221 if (unlikely(tgt == NULL)) { 5222 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5223 "qla_target(%d): Response pkt %x received, but no " 5224 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha); 5225 return; 5226 } 5227 5228 /* 5229 * In tgt_stop mode we also should allow all requests to pass. 5230 * Otherwise, some commands can stuck. 5231 */ 5232 5233 tgt->irq_cmd_count++; 5234 5235 switch (pkt->entry_type) { 5236 case CTIO_CRC2: 5237 case CTIO_TYPE7: 5238 { 5239 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5240 qlt_do_ctio_completion(vha, entry->handle, 5241 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5242 entry); 5243 break; 5244 } 5245 5246 case ACCEPT_TGT_IO_TYPE: 5247 { 5248 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5249 int rc; 5250 if (atio->u.isp2x.status != 5251 cpu_to_le16(ATIO_CDB_VALID)) { 5252 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5253 "qla_target(%d): ATIO with error " 5254 "status %x received\n", vha->vp_idx, 5255 le16_to_cpu(atio->u.isp2x.status)); 5256 break; 5257 } 5258 5259 rc = qlt_chk_qfull_thresh_hold(vha, atio); 5260 if (rc != 0) { 5261 tgt->irq_cmd_count--; 5262 return; 5263 } 5264 5265 rc = qlt_handle_cmd_for_atio(vha, atio); 5266 if (unlikely(rc != 0)) { 5267 if (rc == -ESRCH) { 5268 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5269 qlt_send_busy(vha, atio, 0); 5270 #else 5271 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5272 #endif 5273 } else { 5274 if (tgt->tgt_stop) { 5275 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5276 "qla_target: Unable to send " 5277 "command to target, sending TERM " 5278 "EXCHANGE for rsp\n"); 5279 qlt_send_term_exchange(vha, NULL, 5280 atio, 1, 0); 5281 } else { 5282 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5283 "qla_target(%d): Unable to send " 5284 "command to target, sending BUSY " 5285 "status\n", vha->vp_idx); 5286 qlt_send_busy(vha, atio, 0); 5287 } 5288 } 5289 } 5290 } 5291 break; 5292 5293 case CONTINUE_TGT_IO_TYPE: 5294 { 5295 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5296 qlt_do_ctio_completion(vha, entry->handle, 5297 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5298 entry); 5299 break; 5300 } 5301 5302 case CTIO_A64_TYPE: 5303 { 5304 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5305 qlt_do_ctio_completion(vha, entry->handle, 5306 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5307 entry); 5308 break; 5309 } 5310 5311 case IMMED_NOTIFY_TYPE: 5312 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5313 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5314 break; 5315 5316 case NOTIFY_ACK_TYPE: 5317 if (tgt->notify_ack_expected > 0) { 5318 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5319 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5320 "NOTIFY_ACK seq %08x status %x\n", 5321 le16_to_cpu(entry->u.isp2x.seq_id), 5322 le16_to_cpu(entry->u.isp2x.status)); 5323 tgt->notify_ack_expected--; 5324 if (entry->u.isp2x.status != 5325 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5326 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5327 "qla_target(%d): NOTIFY_ACK " 5328 "failed %x\n", vha->vp_idx, 5329 le16_to_cpu(entry->u.isp2x.status)); 5330 } 5331 } else { 5332 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5333 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5334 vha->vp_idx); 5335 } 5336 break; 5337 5338 case ABTS_RECV_24XX: 5339 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5340 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5341 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5342 break; 5343 5344 case ABTS_RESP_24XX: 5345 if (tgt->abts_resp_expected > 0) { 5346 struct abts_resp_from_24xx_fw *entry = 5347 (struct abts_resp_from_24xx_fw *)pkt; 5348 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5349 "ABTS_RESP_24XX: compl_status %x\n", 5350 entry->compl_status); 5351 tgt->abts_resp_expected--; 5352 if (le16_to_cpu(entry->compl_status) != 5353 ABTS_RESP_COMPL_SUCCESS) { 5354 if ((entry->error_subcode1 == 0x1E) && 5355 (entry->error_subcode2 == 0)) { 5356 /* 5357 * We've got a race here: aborted 5358 * exchange not terminated, i.e. 5359 * response for the aborted command was 5360 * sent between the abort request was 5361 * received and processed. 5362 * Unfortunately, the firmware has a 5363 * silly requirement that all aborted 5364 * exchanges must be explicitely 5365 * terminated, otherwise it refuses to 5366 * send responses for the abort 5367 * requests. So, we have to 5368 * (re)terminate the exchange and retry 5369 * the abort response. 5370 */ 5371 qlt_24xx_retry_term_exchange(vha, 5372 entry); 5373 } else 5374 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5375 "qla_target(%d): ABTS_RESP_24XX " 5376 "failed %x (subcode %x:%x)", 5377 vha->vp_idx, entry->compl_status, 5378 entry->error_subcode1, 5379 entry->error_subcode2); 5380 } 5381 } else { 5382 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5383 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5384 "received\n", vha->vp_idx); 5385 } 5386 break; 5387 5388 default: 5389 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5390 "qla_target(%d): Received unknown response pkt " 5391 "type %x\n", vha->vp_idx, pkt->entry_type); 5392 break; 5393 } 5394 5395 tgt->irq_cmd_count--; 5396 } 5397 5398 /* 5399 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5400 */ 5401 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5402 uint16_t *mailbox) 5403 { 5404 struct qla_hw_data *ha = vha->hw; 5405 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5406 int login_code; 5407 5408 if (!ha->tgt.tgt_ops) 5409 return; 5410 5411 if (unlikely(tgt == NULL)) { 5412 ql_dbg(ql_dbg_tgt, vha, 0xe03a, 5413 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha); 5414 return; 5415 } 5416 5417 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5418 IS_QLA2100(ha)) 5419 return; 5420 /* 5421 * In tgt_stop mode we also should allow all requests to pass. 5422 * Otherwise, some commands can stuck. 5423 */ 5424 5425 tgt->irq_cmd_count++; 5426 5427 switch (code) { 5428 case MBA_RESET: /* Reset */ 5429 case MBA_SYSTEM_ERR: /* System Error */ 5430 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5431 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5432 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5433 "qla_target(%d): System error async event %#x " 5434 "occurred", vha->vp_idx, code); 5435 break; 5436 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5437 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5438 break; 5439 5440 case MBA_LOOP_UP: 5441 { 5442 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5443 "qla_target(%d): Async LOOP_UP occurred " 5444 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5445 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5446 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5447 if (tgt->link_reinit_iocb_pending) { 5448 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb, 5449 0, 0, 0, 0, 0, 0); 5450 tgt->link_reinit_iocb_pending = 0; 5451 } 5452 break; 5453 } 5454 5455 case MBA_LIP_OCCURRED: 5456 case MBA_LOOP_DOWN: 5457 case MBA_LIP_RESET: 5458 case MBA_RSCN_UPDATE: 5459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5460 "qla_target(%d): Async event %#x occurred " 5461 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5462 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5463 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5464 break; 5465 5466 case MBA_REJECTED_FCP_CMD: 5467 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 5468 "qla_target(%d): Async event LS_REJECT occurred " 5469 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5470 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5471 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5472 5473 if (le16_to_cpu(mailbox[3]) == 1) { 5474 /* exchange starvation. */ 5475 vha->hw->exch_starvation++; 5476 if (vha->hw->exch_starvation > 5) { 5477 ql_log(ql_log_warn, vha, 0xffff, 5478 "Exchange starvation-. Resetting RISC\n"); 5479 5480 vha->hw->exch_starvation = 0; 5481 if (IS_P3P_TYPE(vha->hw)) 5482 set_bit(FCOE_CTX_RESET_NEEDED, 5483 &vha->dpc_flags); 5484 else 5485 set_bit(ISP_ABORT_NEEDED, 5486 &vha->dpc_flags); 5487 qla2xxx_wake_dpc(vha); 5488 } 5489 } 5490 break; 5491 5492 case MBA_PORT_UPDATE: 5493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5494 "qla_target(%d): Port update async event %#x " 5495 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5496 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5497 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5498 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5499 5500 login_code = le16_to_cpu(mailbox[2]); 5501 if (login_code == 0x4) { 5502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5503 "Async MB 2: Got PLOGI Complete\n"); 5504 vha->hw->exch_starvation = 0; 5505 } else if (login_code == 0x7) 5506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5507 "Async MB 2: Port Logged Out\n"); 5508 break; 5509 default: 5510 break; 5511 } 5512 5513 tgt->irq_cmd_count--; 5514 } 5515 5516 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5517 uint16_t loop_id) 5518 { 5519 fc_port_t *fcport, *tfcp, *del; 5520 int rc; 5521 unsigned long flags; 5522 u8 newfcport = 0; 5523 5524 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); 5525 if (!fcport) { 5526 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5527 "qla_target(%d): Allocation of tmp FC port failed", 5528 vha->vp_idx); 5529 return NULL; 5530 } 5531 5532 fcport->loop_id = loop_id; 5533 5534 rc = qla2x00_get_port_database(vha, fcport, 0); 5535 if (rc != QLA_SUCCESS) { 5536 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5537 "qla_target(%d): Failed to retrieve fcport " 5538 "information -- get_port_database() returned %x " 5539 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5540 kfree(fcport); 5541 return NULL; 5542 } 5543 5544 del = NULL; 5545 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 5546 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 5547 5548 if (tfcp) { 5549 tfcp->d_id = fcport->d_id; 5550 tfcp->port_type = fcport->port_type; 5551 tfcp->supported_classes = fcport->supported_classes; 5552 tfcp->flags |= fcport->flags; 5553 5554 del = fcport; 5555 fcport = tfcp; 5556 } else { 5557 if (vha->hw->current_topology == ISP_CFG_F) 5558 fcport->flags |= FCF_FABRIC_DEVICE; 5559 5560 list_add_tail(&fcport->list, &vha->vp_fcports); 5561 if (!IS_SW_RESV_ADDR(fcport->d_id)) 5562 vha->fcport_count++; 5563 fcport->login_gen++; 5564 fcport->disc_state = DSC_LOGIN_COMPLETE; 5565 fcport->login_succ = 1; 5566 newfcport = 1; 5567 } 5568 5569 fcport->deleted = 0; 5570 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 5571 5572 switch (vha->host->active_mode) { 5573 case MODE_INITIATOR: 5574 case MODE_DUAL: 5575 if (newfcport) { 5576 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 5577 ql_dbg(ql_dbg_disc, vha, 0xffff, 5578 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 5579 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5580 qla24xx_post_upd_fcport_work(vha, fcport); 5581 } else { 5582 ql_dbg(ql_dbg_disc, vha, 0xffff, 5583 "%s %d %8phC post gpsc fcp_cnt %d\n", 5584 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5585 qla24xx_post_gpsc_work(vha, fcport); 5586 } 5587 } 5588 break; 5589 5590 case MODE_TARGET: 5591 default: 5592 break; 5593 } 5594 if (del) 5595 qla2x00_free_fcport(del); 5596 5597 return fcport; 5598 } 5599 5600 /* Must be called under tgt_mutex */ 5601 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 5602 uint8_t *s_id) 5603 { 5604 struct fc_port *sess = NULL; 5605 fc_port_t *fcport = NULL; 5606 int rc, global_resets; 5607 uint16_t loop_id = 0; 5608 5609 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 5610 /* 5611 * This is Domain Controller, so it should be 5612 * OK to drop SCSI commands from it. 5613 */ 5614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5615 "Unable to find initiator with S_ID %x:%x:%x", 5616 s_id[0], s_id[1], s_id[2]); 5617 return NULL; 5618 } 5619 5620 mutex_lock(&vha->vha_tgt.tgt_mutex); 5621 5622 retry: 5623 global_resets = 5624 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 5625 5626 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 5627 if (rc != 0) { 5628 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5629 5630 ql_log(ql_log_info, vha, 0xf071, 5631 "qla_target(%d): Unable to find " 5632 "initiator with S_ID %x:%x:%x", 5633 vha->vp_idx, s_id[0], s_id[1], 5634 s_id[2]); 5635 5636 if (rc == -ENOENT) { 5637 qlt_port_logo_t logo; 5638 sid_to_portid(s_id, &logo.id); 5639 logo.cmd_count = 1; 5640 qlt_send_first_logo(vha, &logo); 5641 } 5642 5643 return NULL; 5644 } 5645 5646 fcport = qlt_get_port_database(vha, loop_id); 5647 if (!fcport) { 5648 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5649 return NULL; 5650 } 5651 5652 if (global_resets != 5653 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 5654 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 5655 "qla_target(%d): global reset during session discovery " 5656 "(counter was %d, new %d), retrying", vha->vp_idx, 5657 global_resets, 5658 atomic_read(&vha->vha_tgt. 5659 qla_tgt->tgt_global_resets_count)); 5660 goto retry; 5661 } 5662 5663 sess = qlt_create_sess(vha, fcport, true); 5664 5665 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5666 5667 return sess; 5668 } 5669 5670 static void qlt_abort_work(struct qla_tgt *tgt, 5671 struct qla_tgt_sess_work_param *prm) 5672 { 5673 struct scsi_qla_host *vha = tgt->vha; 5674 struct qla_hw_data *ha = vha->hw; 5675 struct fc_port *sess = NULL; 5676 unsigned long flags = 0, flags2 = 0; 5677 uint32_t be_s_id; 5678 uint8_t s_id[3]; 5679 int rc; 5680 5681 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5682 5683 if (tgt->tgt_stop) 5684 goto out_term2; 5685 5686 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 5687 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 5688 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 5689 5690 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5691 (unsigned char *)&be_s_id); 5692 if (!sess) { 5693 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5694 5695 sess = qlt_make_local_sess(vha, s_id); 5696 /* sess has got an extra creation ref */ 5697 5698 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5699 if (!sess) 5700 goto out_term2; 5701 } else { 5702 if (sess->deleted) { 5703 sess = NULL; 5704 goto out_term2; 5705 } 5706 5707 if (!kref_get_unless_zero(&sess->sess_kref)) { 5708 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff, 5709 "%s: kref_get fail %8phC \n", 5710 __func__, sess->port_name); 5711 sess = NULL; 5712 goto out_term2; 5713 } 5714 } 5715 5716 spin_lock_irqsave(&ha->hardware_lock, flags); 5717 5718 if (tgt->tgt_stop) 5719 goto out_term; 5720 5721 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 5722 if (rc != 0) 5723 goto out_term; 5724 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5725 if (sess) 5726 ha->tgt.tgt_ops->put_sess(sess); 5727 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5728 return; 5729 5730 out_term2: 5731 spin_lock_irqsave(&ha->hardware_lock, flags); 5732 5733 out_term: 5734 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); 5735 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5736 5737 if (sess) 5738 ha->tgt.tgt_ops->put_sess(sess); 5739 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5740 } 5741 5742 static void qlt_tmr_work(struct qla_tgt *tgt, 5743 struct qla_tgt_sess_work_param *prm) 5744 { 5745 struct atio_from_isp *a = &prm->tm_iocb2; 5746 struct scsi_qla_host *vha = tgt->vha; 5747 struct qla_hw_data *ha = vha->hw; 5748 struct fc_port *sess = NULL; 5749 unsigned long flags; 5750 uint8_t *s_id = NULL; /* to hide compiler warnings */ 5751 int rc; 5752 uint32_t lun, unpacked_lun; 5753 int fn; 5754 void *iocb; 5755 5756 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5757 5758 if (tgt->tgt_stop) 5759 goto out_term; 5760 5761 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 5762 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 5763 if (!sess) { 5764 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5765 5766 sess = qlt_make_local_sess(vha, s_id); 5767 /* sess has got an extra creation ref */ 5768 5769 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5770 if (!sess) 5771 goto out_term; 5772 } else { 5773 if (sess->deleted) { 5774 sess = NULL; 5775 goto out_term; 5776 } 5777 5778 if (!kref_get_unless_zero(&sess->sess_kref)) { 5779 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff, 5780 "%s: kref_get fail %8phC\n", 5781 __func__, sess->port_name); 5782 sess = NULL; 5783 goto out_term; 5784 } 5785 } 5786 5787 iocb = a; 5788 lun = a->u.isp24.fcp_cmnd.lun; 5789 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 5790 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 5791 5792 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 5793 if (rc != 0) 5794 goto out_term; 5795 5796 ha->tgt.tgt_ops->put_sess(sess); 5797 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5798 return; 5799 5800 out_term: 5801 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0); 5802 ha->tgt.tgt_ops->put_sess(sess); 5803 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5804 } 5805 5806 static void qlt_sess_work_fn(struct work_struct *work) 5807 { 5808 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 5809 struct scsi_qla_host *vha = tgt->vha; 5810 unsigned long flags; 5811 5812 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 5813 5814 spin_lock_irqsave(&tgt->sess_work_lock, flags); 5815 while (!list_empty(&tgt->sess_works_list)) { 5816 struct qla_tgt_sess_work_param *prm = list_entry( 5817 tgt->sess_works_list.next, typeof(*prm), 5818 sess_works_list_entry); 5819 5820 /* 5821 * This work can be scheduled on several CPUs at time, so we 5822 * must delete the entry to eliminate double processing 5823 */ 5824 list_del(&prm->sess_works_list_entry); 5825 5826 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 5827 5828 switch (prm->type) { 5829 case QLA_TGT_SESS_WORK_ABORT: 5830 qlt_abort_work(tgt, prm); 5831 break; 5832 case QLA_TGT_SESS_WORK_TM: 5833 qlt_tmr_work(tgt, prm); 5834 break; 5835 default: 5836 BUG_ON(1); 5837 break; 5838 } 5839 5840 spin_lock_irqsave(&tgt->sess_work_lock, flags); 5841 5842 kfree(prm); 5843 } 5844 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 5845 } 5846 5847 /* Must be called under tgt_host_action_mutex */ 5848 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 5849 { 5850 struct qla_tgt *tgt; 5851 5852 if (!QLA_TGT_MODE_ENABLED()) 5853 return 0; 5854 5855 if (!IS_TGT_MODE_CAPABLE(ha)) { 5856 ql_log(ql_log_warn, base_vha, 0xe070, 5857 "This adapter does not support target mode.\n"); 5858 return 0; 5859 } 5860 5861 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 5862 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 5863 5864 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 5865 5866 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 5867 if (!tgt) { 5868 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 5869 "Unable to allocate struct qla_tgt\n"); 5870 return -ENOMEM; 5871 } 5872 5873 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 5874 base_vha->host->hostt->supported_mode |= MODE_TARGET; 5875 5876 tgt->ha = ha; 5877 tgt->vha = base_vha; 5878 init_waitqueue_head(&tgt->waitQ); 5879 INIT_LIST_HEAD(&tgt->del_sess_list); 5880 spin_lock_init(&tgt->sess_work_lock); 5881 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 5882 INIT_LIST_HEAD(&tgt->sess_works_list); 5883 atomic_set(&tgt->tgt_global_resets_count, 0); 5884 5885 base_vha->vha_tgt.qla_tgt = tgt; 5886 5887 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 5888 "qla_target(%d): using 64 Bit PCI addressing", 5889 base_vha->vp_idx); 5890 tgt->tgt_enable_64bit_addr = 1; 5891 /* 3 is reserved */ 5892 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 5893 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX; 5894 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX; 5895 5896 if (base_vha->fc_vport) 5897 return 0; 5898 5899 mutex_lock(&qla_tgt_mutex); 5900 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 5901 mutex_unlock(&qla_tgt_mutex); 5902 5903 return 0; 5904 } 5905 5906 /* Must be called under tgt_host_action_mutex */ 5907 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 5908 { 5909 if (!vha->vha_tgt.qla_tgt) 5910 return 0; 5911 5912 if (vha->fc_vport) { 5913 qlt_release(vha->vha_tgt.qla_tgt); 5914 return 0; 5915 } 5916 5917 /* free left over qfull cmds */ 5918 qlt_init_term_exchange(vha); 5919 5920 mutex_lock(&qla_tgt_mutex); 5921 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 5922 mutex_unlock(&qla_tgt_mutex); 5923 5924 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 5925 vha->host_no, ha); 5926 qlt_release(vha->vha_tgt.qla_tgt); 5927 5928 return 0; 5929 } 5930 5931 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 5932 unsigned char *b) 5933 { 5934 int i; 5935 5936 pr_debug("qla2xxx HW vha->node_name: "); 5937 for (i = 0; i < WWN_SIZE; i++) 5938 pr_debug("%02x ", vha->node_name[i]); 5939 pr_debug("\n"); 5940 pr_debug("qla2xxx HW vha->port_name: "); 5941 for (i = 0; i < WWN_SIZE; i++) 5942 pr_debug("%02x ", vha->port_name[i]); 5943 pr_debug("\n"); 5944 5945 pr_debug("qla2xxx passed configfs WWPN: "); 5946 put_unaligned_be64(wwpn, b); 5947 for (i = 0; i < WWN_SIZE; i++) 5948 pr_debug("%02x ", b[i]); 5949 pr_debug("\n"); 5950 } 5951 5952 /** 5953 * qla_tgt_lport_register - register lport with external module 5954 * 5955 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops 5956 * @wwpn: Passwd FC target WWPN 5957 * @callback: lport initialization callback for tcm_qla2xxx code 5958 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 5959 */ 5960 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 5961 u64 npiv_wwpn, u64 npiv_wwnn, 5962 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 5963 { 5964 struct qla_tgt *tgt; 5965 struct scsi_qla_host *vha; 5966 struct qla_hw_data *ha; 5967 struct Scsi_Host *host; 5968 unsigned long flags; 5969 int rc; 5970 u8 b[WWN_SIZE]; 5971 5972 mutex_lock(&qla_tgt_mutex); 5973 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 5974 vha = tgt->vha; 5975 ha = vha->hw; 5976 5977 host = vha->host; 5978 if (!host) 5979 continue; 5980 5981 if (!(host->hostt->supported_mode & MODE_TARGET)) 5982 continue; 5983 5984 spin_lock_irqsave(&ha->hardware_lock, flags); 5985 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 5986 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 5987 host->host_no); 5988 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5989 continue; 5990 } 5991 if (tgt->tgt_stop) { 5992 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 5993 host->host_no); 5994 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5995 continue; 5996 } 5997 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5998 5999 if (!scsi_host_get(host)) { 6000 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6001 "Unable to scsi_host_get() for" 6002 " qla2xxx scsi_host\n"); 6003 continue; 6004 } 6005 qlt_lport_dump(vha, phys_wwpn, b); 6006 6007 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6008 scsi_host_put(host); 6009 continue; 6010 } 6011 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6012 if (rc != 0) 6013 scsi_host_put(host); 6014 6015 mutex_unlock(&qla_tgt_mutex); 6016 return rc; 6017 } 6018 mutex_unlock(&qla_tgt_mutex); 6019 6020 return -ENODEV; 6021 } 6022 EXPORT_SYMBOL(qlt_lport_register); 6023 6024 /** 6025 * qla_tgt_lport_deregister - Degister lport 6026 * 6027 * @vha: Registered scsi_qla_host pointer 6028 */ 6029 void qlt_lport_deregister(struct scsi_qla_host *vha) 6030 { 6031 struct qla_hw_data *ha = vha->hw; 6032 struct Scsi_Host *sh = vha->host; 6033 /* 6034 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6035 */ 6036 vha->vha_tgt.target_lport_ptr = NULL; 6037 ha->tgt.tgt_ops = NULL; 6038 /* 6039 * Release the Scsi_Host reference for the underlying qla2xxx host 6040 */ 6041 scsi_host_put(sh); 6042 } 6043 EXPORT_SYMBOL(qlt_lport_deregister); 6044 6045 /* Must be called under HW lock */ 6046 static void qlt_set_mode(struct scsi_qla_host *vha) 6047 { 6048 switch (ql2x_ini_mode) { 6049 case QLA2XXX_INI_MODE_DISABLED: 6050 case QLA2XXX_INI_MODE_EXCLUSIVE: 6051 vha->host->active_mode = MODE_TARGET; 6052 break; 6053 case QLA2XXX_INI_MODE_ENABLED: 6054 vha->host->active_mode = MODE_UNKNOWN; 6055 break; 6056 case QLA2XXX_INI_MODE_DUAL: 6057 vha->host->active_mode = MODE_DUAL; 6058 break; 6059 default: 6060 break; 6061 } 6062 } 6063 6064 /* Must be called under HW lock */ 6065 static void qlt_clear_mode(struct scsi_qla_host *vha) 6066 { 6067 switch (ql2x_ini_mode) { 6068 case QLA2XXX_INI_MODE_DISABLED: 6069 vha->host->active_mode = MODE_UNKNOWN; 6070 break; 6071 case QLA2XXX_INI_MODE_EXCLUSIVE: 6072 vha->host->active_mode = MODE_INITIATOR; 6073 break; 6074 case QLA2XXX_INI_MODE_ENABLED: 6075 case QLA2XXX_INI_MODE_DUAL: 6076 vha->host->active_mode = MODE_INITIATOR; 6077 break; 6078 default: 6079 break; 6080 } 6081 } 6082 6083 /* 6084 * qla_tgt_enable_vha - NO LOCK HELD 6085 * 6086 * host_reset, bring up w/ Target Mode Enabled 6087 */ 6088 void 6089 qlt_enable_vha(struct scsi_qla_host *vha) 6090 { 6091 struct qla_hw_data *ha = vha->hw; 6092 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6093 unsigned long flags; 6094 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6095 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER; 6096 6097 if (!tgt) { 6098 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6099 "Unable to locate qla_tgt pointer from" 6100 " struct qla_hw_data\n"); 6101 dump_stack(); 6102 return; 6103 } 6104 6105 spin_lock_irqsave(&ha->hardware_lock, flags); 6106 tgt->tgt_stopped = 0; 6107 qlt_set_mode(vha); 6108 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6109 6110 if (vha->vp_idx) { 6111 qla24xx_disable_vp(vha); 6112 qla24xx_enable_vp(vha); 6113 } else { 6114 if (ha->msix_entries) { 6115 ql_dbg(ql_dbg_tgt, vha, 0xffff, 6116 "%s: host%ld : vector %d cpu %d\n", 6117 __func__, vha->host_no, 6118 ha->msix_entries[rspq_ent].vector, 6119 ha->msix_entries[rspq_ent].cpuid); 6120 6121 ha->tgt.rspq_vector_cpuid = 6122 ha->msix_entries[rspq_ent].cpuid; 6123 } 6124 6125 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6126 qla2xxx_wake_dpc(base_vha); 6127 qla2x00_wait_for_hba_online(base_vha); 6128 } 6129 } 6130 EXPORT_SYMBOL(qlt_enable_vha); 6131 6132 /* 6133 * qla_tgt_disable_vha - NO LOCK HELD 6134 * 6135 * Disable Target Mode and reset the adapter 6136 */ 6137 static void qlt_disable_vha(struct scsi_qla_host *vha) 6138 { 6139 struct qla_hw_data *ha = vha->hw; 6140 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6141 unsigned long flags; 6142 6143 if (!tgt) { 6144 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6145 "Unable to locate qla_tgt pointer from" 6146 " struct qla_hw_data\n"); 6147 dump_stack(); 6148 return; 6149 } 6150 6151 spin_lock_irqsave(&ha->hardware_lock, flags); 6152 qlt_clear_mode(vha); 6153 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6154 6155 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6156 qla2xxx_wake_dpc(vha); 6157 qla2x00_wait_for_hba_online(vha); 6158 } 6159 6160 /* 6161 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6162 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6163 * members. 6164 */ 6165 void 6166 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6167 { 6168 vha->vha_tgt.qla_tgt = NULL; 6169 6170 mutex_init(&vha->vha_tgt.tgt_mutex); 6171 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6172 6173 qlt_clear_mode(vha); 6174 6175 /* 6176 * NOTE: Currently the value is kept the same for <24xx and 6177 * >=24xx ISPs. If it is necessary to change it, 6178 * the check should be added for specific ISPs, 6179 * assigning the value appropriately. 6180 */ 6181 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6182 6183 qlt_add_target(ha, vha); 6184 } 6185 6186 void 6187 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) 6188 { 6189 /* 6190 * FC-4 Feature bit 0 indicates target functionality to the name server. 6191 */ 6192 if (qla_tgt_mode_enabled(vha)) { 6193 ct_req->req.rff_id.fc4_feature = BIT_0; 6194 } else if (qla_ini_mode_enabled(vha)) { 6195 ct_req->req.rff_id.fc4_feature = BIT_1; 6196 } else if (qla_dual_mode_enabled(vha)) 6197 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; 6198 } 6199 6200 /* 6201 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6202 * @ha: HA context 6203 * 6204 * Beginning of ATIO ring has initialization control block already built 6205 * by nvram config routine. 6206 * 6207 * Returns 0 on success. 6208 */ 6209 void 6210 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6211 { 6212 struct qla_hw_data *ha = vha->hw; 6213 uint16_t cnt; 6214 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6215 6216 if (qla_ini_mode_enabled(vha)) 6217 return; 6218 6219 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6220 pkt->u.raw.signature = ATIO_PROCESSED; 6221 pkt++; 6222 } 6223 6224 } 6225 6226 /* 6227 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6228 * @ha: SCSI driver HA context 6229 */ 6230 void 6231 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6232 { 6233 struct qla_hw_data *ha = vha->hw; 6234 struct atio_from_isp *pkt; 6235 int cnt, i; 6236 6237 if (!vha->flags.online) 6238 return; 6239 6240 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6241 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6242 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6243 cnt = pkt->u.raw.entry_count; 6244 6245 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6246 /* 6247 * This packet is corrupted. The header + payload 6248 * can not be trusted. There is no point in passing 6249 * it further up. 6250 */ 6251 ql_log(ql_log_warn, vha, 0xffff, 6252 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6253 pkt->u.isp24.fcp_hdr.s_id, 6254 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6255 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6256 6257 adjust_corrupted_atio(pkt); 6258 qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0); 6259 } else { 6260 qlt_24xx_atio_pkt_all_vps(vha, 6261 (struct atio_from_isp *)pkt, ha_locked); 6262 } 6263 6264 for (i = 0; i < cnt; i++) { 6265 ha->tgt.atio_ring_index++; 6266 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6267 ha->tgt.atio_ring_index = 0; 6268 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6269 } else 6270 ha->tgt.atio_ring_ptr++; 6271 6272 pkt->u.raw.signature = ATIO_PROCESSED; 6273 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6274 } 6275 wmb(); 6276 } 6277 6278 /* Adjust ring index */ 6279 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6280 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha)); 6281 } 6282 6283 void 6284 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6285 { 6286 struct qla_hw_data *ha = vha->hw; 6287 if (!QLA_TGT_MODE_ENABLED()) 6288 return; 6289 6290 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6291 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6292 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6293 6294 if (IS_ATIO_MSIX_CAPABLE(ha)) { 6295 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6296 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6297 6298 icb->msix_atio = cpu_to_le16(msix->entry); 6299 ql_dbg(ql_dbg_init, vha, 0xf072, 6300 "Registering ICB vector 0x%x for atio que.\n", 6301 msix->entry); 6302 } 6303 } 6304 6305 void 6306 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6307 { 6308 struct qla_hw_data *ha = vha->hw; 6309 u32 tmp; 6310 u16 t; 6311 6312 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6313 if (!ha->tgt.saved_set) { 6314 /* We save only once */ 6315 ha->tgt.saved_exchange_count = nv->exchange_count; 6316 ha->tgt.saved_firmware_options_1 = 6317 nv->firmware_options_1; 6318 ha->tgt.saved_firmware_options_2 = 6319 nv->firmware_options_2; 6320 ha->tgt.saved_firmware_options_3 = 6321 nv->firmware_options_3; 6322 ha->tgt.saved_set = 1; 6323 } 6324 6325 if (qla_tgt_mode_enabled(vha)) { 6326 nv->exchange_count = cpu_to_le16(0xFFFF); 6327 } else { /* dual */ 6328 if (ql_dm_tgt_ex_pct > 100) { 6329 ql_dm_tgt_ex_pct = 50; 6330 } else if (ql_dm_tgt_ex_pct == 100) { 6331 /* leave some for FW */ 6332 ql_dm_tgt_ex_pct = 95; 6333 } 6334 6335 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct; 6336 tmp = tmp/100; 6337 if (tmp > 0xffff) 6338 tmp = 0xffff; 6339 6340 t = tmp & 0xffff; 6341 nv->exchange_count = cpu_to_le16(t); 6342 } 6343 6344 /* Enable target mode */ 6345 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6346 6347 /* Disable ini mode, if requested */ 6348 if (qla_tgt_mode_enabled(vha)) 6349 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6350 6351 /* Disable Full Login after LIP */ 6352 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6353 /* Enable initial LIP */ 6354 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6355 if (ql2xtgt_tape_enable) 6356 /* Enable FC Tape support */ 6357 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6358 else 6359 /* Disable FC Tape support */ 6360 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6361 6362 /* Disable Full Login after LIP */ 6363 nv->host_p &= cpu_to_le32(~BIT_10); 6364 6365 /* 6366 * clear BIT 15 explicitly as we have seen at least 6367 * a couple of instances where this was set and this 6368 * was causing the firmware to not be initialized. 6369 */ 6370 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6371 /* Enable target PRLI control */ 6372 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6373 } else { 6374 if (ha->tgt.saved_set) { 6375 nv->exchange_count = ha->tgt.saved_exchange_count; 6376 nv->firmware_options_1 = 6377 ha->tgt.saved_firmware_options_1; 6378 nv->firmware_options_2 = 6379 ha->tgt.saved_firmware_options_2; 6380 nv->firmware_options_3 = 6381 ha->tgt.saved_firmware_options_3; 6382 } 6383 return; 6384 } 6385 6386 if (ha->tgt.enable_class_2) { 6387 if (vha->flags.init_done) 6388 fc_host_supported_classes(vha->host) = 6389 FC_COS_CLASS2 | FC_COS_CLASS3; 6390 6391 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6392 } else { 6393 if (vha->flags.init_done) 6394 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6395 6396 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6397 } 6398 } 6399 6400 void 6401 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6402 struct init_cb_24xx *icb) 6403 { 6404 struct qla_hw_data *ha = vha->hw; 6405 6406 if (!QLA_TGT_MODE_ENABLED()) 6407 return; 6408 6409 if (ha->tgt.node_name_set) { 6410 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6411 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6412 } 6413 6414 /* disable ZIO at start time. */ 6415 if (!vha->flags.init_done) { 6416 uint32_t tmp; 6417 tmp = le32_to_cpu(icb->firmware_options_2); 6418 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6419 icb->firmware_options_2 = cpu_to_le32(tmp); 6420 } 6421 } 6422 6423 void 6424 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6425 { 6426 struct qla_hw_data *ha = vha->hw; 6427 u32 tmp; 6428 u16 t; 6429 6430 if (!QLA_TGT_MODE_ENABLED()) 6431 return; 6432 6433 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6434 if (!ha->tgt.saved_set) { 6435 /* We save only once */ 6436 ha->tgt.saved_exchange_count = nv->exchange_count; 6437 ha->tgt.saved_firmware_options_1 = 6438 nv->firmware_options_1; 6439 ha->tgt.saved_firmware_options_2 = 6440 nv->firmware_options_2; 6441 ha->tgt.saved_firmware_options_3 = 6442 nv->firmware_options_3; 6443 ha->tgt.saved_set = 1; 6444 } 6445 6446 if (qla_tgt_mode_enabled(vha)) { 6447 nv->exchange_count = cpu_to_le16(0xFFFF); 6448 } else { /* dual */ 6449 if (ql_dm_tgt_ex_pct > 100) { 6450 ql_dm_tgt_ex_pct = 50; 6451 } else if (ql_dm_tgt_ex_pct == 100) { 6452 /* leave some for FW */ 6453 ql_dm_tgt_ex_pct = 95; 6454 } 6455 6456 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct; 6457 tmp = tmp/100; 6458 if (tmp > 0xffff) 6459 tmp = 0xffff; 6460 t = tmp & 0xffff; 6461 nv->exchange_count = cpu_to_le16(t); 6462 } 6463 6464 /* Enable target mode */ 6465 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6466 6467 /* Disable ini mode, if requested */ 6468 if (qla_tgt_mode_enabled(vha)) 6469 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6470 /* Disable Full Login after LIP */ 6471 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6472 /* Enable initial LIP */ 6473 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6474 /* 6475 * clear BIT 15 explicitly as we have seen at 6476 * least a couple of instances where this was set 6477 * and this was causing the firmware to not be 6478 * initialized. 6479 */ 6480 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6481 if (ql2xtgt_tape_enable) 6482 /* Enable FC tape support */ 6483 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6484 else 6485 /* Disable FC tape support */ 6486 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6487 6488 /* Disable Full Login after LIP */ 6489 nv->host_p &= cpu_to_le32(~BIT_10); 6490 /* Enable target PRLI control */ 6491 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6492 } else { 6493 if (ha->tgt.saved_set) { 6494 nv->exchange_count = ha->tgt.saved_exchange_count; 6495 nv->firmware_options_1 = 6496 ha->tgt.saved_firmware_options_1; 6497 nv->firmware_options_2 = 6498 ha->tgt.saved_firmware_options_2; 6499 nv->firmware_options_3 = 6500 ha->tgt.saved_firmware_options_3; 6501 } 6502 return; 6503 } 6504 6505 if (ha->tgt.enable_class_2) { 6506 if (vha->flags.init_done) 6507 fc_host_supported_classes(vha->host) = 6508 FC_COS_CLASS2 | FC_COS_CLASS3; 6509 6510 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6511 } else { 6512 if (vha->flags.init_done) 6513 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6514 6515 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6516 } 6517 } 6518 6519 void 6520 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6521 struct init_cb_81xx *icb) 6522 { 6523 struct qla_hw_data *ha = vha->hw; 6524 6525 if (!QLA_TGT_MODE_ENABLED()) 6526 return; 6527 6528 if (ha->tgt.node_name_set) { 6529 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6530 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6531 } 6532 6533 /* disable ZIO at start time. */ 6534 if (!vha->flags.init_done) { 6535 uint32_t tmp; 6536 tmp = le32_to_cpu(icb->firmware_options_2); 6537 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6538 icb->firmware_options_2 = cpu_to_le32(tmp); 6539 } 6540 6541 } 6542 6543 void 6544 qlt_83xx_iospace_config(struct qla_hw_data *ha) 6545 { 6546 if (!QLA_TGT_MODE_ENABLED()) 6547 return; 6548 6549 ha->msix_count += 1; /* For ATIO Q */ 6550 } 6551 6552 int 6553 qlt_24xx_process_response_error(struct scsi_qla_host *vha, 6554 struct sts_entry_24xx *pkt) 6555 { 6556 switch (pkt->entry_type) { 6557 case ABTS_RECV_24XX: 6558 case ABTS_RESP_24XX: 6559 case CTIO_TYPE7: 6560 case NOTIFY_ACK_TYPE: 6561 case CTIO_CRC2: 6562 return 1; 6563 default: 6564 return 0; 6565 } 6566 } 6567 6568 void 6569 qlt_modify_vp_config(struct scsi_qla_host *vha, 6570 struct vp_config_entry_24xx *vpmod) 6571 { 6572 /* enable target mode. Bit5 = 1 => disable */ 6573 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 6574 vpmod->options_idx1 &= ~BIT_5; 6575 6576 /* Disable ini mode, if requested. bit4 = 1 => disable */ 6577 if (qla_tgt_mode_enabled(vha)) 6578 vpmod->options_idx1 &= ~BIT_4; 6579 } 6580 6581 void 6582 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6583 { 6584 if (!QLA_TGT_MODE_ENABLED()) 6585 return; 6586 6587 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6588 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6589 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6590 } else { 6591 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6592 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6593 } 6594 6595 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6596 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 6597 6598 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 6599 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 6600 qlt_unknown_atio_work_fn); 6601 6602 qlt_clear_mode(base_vha); 6603 } 6604 6605 irqreturn_t 6606 qla83xx_msix_atio_q(int irq, void *dev_id) 6607 { 6608 struct rsp_que *rsp; 6609 scsi_qla_host_t *vha; 6610 struct qla_hw_data *ha; 6611 unsigned long flags; 6612 6613 rsp = (struct rsp_que *) dev_id; 6614 ha = rsp->hw; 6615 vha = pci_get_drvdata(ha->pdev); 6616 6617 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6618 6619 qlt_24xx_process_atio_queue(vha, 0); 6620 6621 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6622 6623 return IRQ_HANDLED; 6624 } 6625 6626 static void 6627 qlt_handle_abts_recv_work(struct work_struct *work) 6628 { 6629 struct qla_tgt_sess_op *op = container_of(work, 6630 struct qla_tgt_sess_op, work); 6631 scsi_qla_host_t *vha = op->vha; 6632 struct qla_hw_data *ha = vha->hw; 6633 unsigned long flags; 6634 6635 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset)) 6636 return; 6637 6638 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6639 qlt_24xx_process_atio_queue(vha, 0); 6640 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6641 6642 spin_lock_irqsave(&ha->hardware_lock, flags); 6643 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio); 6644 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6645 } 6646 6647 void 6648 qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt) 6649 { 6650 struct qla_tgt_sess_op *op; 6651 6652 op = kzalloc(sizeof(*op), GFP_ATOMIC); 6653 6654 if (!op) { 6655 /* do not reach for ATIO queue here. This is best effort err 6656 * recovery at this point. 6657 */ 6658 qlt_response_pkt_all_vps(vha, pkt); 6659 return; 6660 } 6661 6662 memcpy(&op->atio, pkt, sizeof(*pkt)); 6663 op->vha = vha; 6664 op->chip_reset = vha->hw->chip_reset; 6665 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 6666 queue_work(qla_tgt_wq, &op->work); 6667 return; 6668 } 6669 6670 int 6671 qlt_mem_alloc(struct qla_hw_data *ha) 6672 { 6673 if (!QLA_TGT_MODE_ENABLED()) 6674 return 0; 6675 6676 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * 6677 MAX_MULTI_ID_FABRIC, GFP_KERNEL); 6678 if (!ha->tgt.tgt_vp_map) 6679 return -ENOMEM; 6680 6681 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 6682 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 6683 &ha->tgt.atio_dma, GFP_KERNEL); 6684 if (!ha->tgt.atio_ring) { 6685 kfree(ha->tgt.tgt_vp_map); 6686 return -ENOMEM; 6687 } 6688 return 0; 6689 } 6690 6691 void 6692 qlt_mem_free(struct qla_hw_data *ha) 6693 { 6694 if (!QLA_TGT_MODE_ENABLED()) 6695 return; 6696 6697 if (ha->tgt.atio_ring) { 6698 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 6699 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 6700 ha->tgt.atio_dma); 6701 } 6702 kfree(ha->tgt.tgt_vp_map); 6703 } 6704 6705 /* vport_slock to be held by the caller */ 6706 void 6707 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 6708 { 6709 if (!QLA_TGT_MODE_ENABLED()) 6710 return; 6711 6712 switch (cmd) { 6713 case SET_VP_IDX: 6714 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 6715 break; 6716 case SET_AL_PA: 6717 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx; 6718 break; 6719 case RESET_VP_IDX: 6720 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 6721 break; 6722 case RESET_AL_PA: 6723 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0; 6724 break; 6725 } 6726 } 6727 6728 static int __init qlt_parse_ini_mode(void) 6729 { 6730 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 6731 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 6732 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 6733 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 6734 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 6735 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 6736 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 6737 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 6738 else 6739 return false; 6740 6741 return true; 6742 } 6743 6744 int __init qlt_init(void) 6745 { 6746 int ret; 6747 6748 if (!qlt_parse_ini_mode()) { 6749 ql_log(ql_log_fatal, NULL, 0xe06b, 6750 "qlt_parse_ini_mode() failed\n"); 6751 return -EINVAL; 6752 } 6753 6754 if (!QLA_TGT_MODE_ENABLED()) 6755 return 0; 6756 6757 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 6758 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 6759 qla_tgt_mgmt_cmd), 0, NULL); 6760 if (!qla_tgt_mgmt_cmd_cachep) { 6761 ql_log(ql_log_fatal, NULL, 0xe06d, 6762 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 6763 return -ENOMEM; 6764 } 6765 6766 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 6767 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 6768 0, NULL); 6769 6770 if (!qla_tgt_plogi_cachep) { 6771 ql_log(ql_log_fatal, NULL, 0xe06d, 6772 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 6773 ret = -ENOMEM; 6774 goto out_mgmt_cmd_cachep; 6775 } 6776 6777 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 6778 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 6779 if (!qla_tgt_mgmt_cmd_mempool) { 6780 ql_log(ql_log_fatal, NULL, 0xe06e, 6781 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 6782 ret = -ENOMEM; 6783 goto out_plogi_cachep; 6784 } 6785 6786 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 6787 if (!qla_tgt_wq) { 6788 ql_log(ql_log_fatal, NULL, 0xe06f, 6789 "alloc_workqueue for qla_tgt_wq failed\n"); 6790 ret = -ENOMEM; 6791 goto out_cmd_mempool; 6792 } 6793 /* 6794 * Return 1 to signal that initiator-mode is being disabled 6795 */ 6796 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 6797 6798 out_cmd_mempool: 6799 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6800 out_plogi_cachep: 6801 kmem_cache_destroy(qla_tgt_plogi_cachep); 6802 out_mgmt_cmd_cachep: 6803 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6804 return ret; 6805 } 6806 6807 void qlt_exit(void) 6808 { 6809 if (!QLA_TGT_MODE_ENABLED()) 6810 return; 6811 6812 destroy_workqueue(qla_tgt_wq); 6813 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6814 kmem_cache_destroy(qla_tgt_plogi_cachep); 6815 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6816 } 6817