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 = 0; 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 ql2xuctrlirq = 1; 70 module_param(ql2xuctrlirq, int, 0644); 71 MODULE_PARM_DESC(ql2xuctrlirq, 72 "User to control IRQ placement via smp_affinity." 73 "Valid with qlini_mode=disabled." 74 "1(default): enable"); 75 76 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 77 78 static int qla_sam_status = SAM_STAT_BUSY; 79 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 80 81 /* 82 * From scsi/fc/fc_fcp.h 83 */ 84 enum fcp_resp_rsp_codes { 85 FCP_TMF_CMPL = 0, 86 FCP_DATA_LEN_INVALID = 1, 87 FCP_CMND_FIELDS_INVALID = 2, 88 FCP_DATA_PARAM_MISMATCH = 3, 89 FCP_TMF_REJECTED = 4, 90 FCP_TMF_FAILED = 5, 91 FCP_TMF_INVALID_LUN = 9, 92 }; 93 94 /* 95 * fc_pri_ta from scsi/fc/fc_fcp.h 96 */ 97 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 98 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 99 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 100 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 101 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 102 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 103 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 104 105 /* 106 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 107 * must be called under HW lock and could unlock/lock it inside. 108 * It isn't an issue, since in the current implementation on the time when 109 * those functions are called: 110 * 111 * - Either context is IRQ and only IRQ handler can modify HW data, 112 * including rings related fields, 113 * 114 * - Or access to target mode variables from struct qla_tgt doesn't 115 * cross those functions boundaries, except tgt_stop, which 116 * additionally protected by irq_cmd_count. 117 */ 118 /* Predefs for callbacks handed to qla2xxx LLD */ 119 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 120 struct atio_from_isp *pkt, uint8_t); 121 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 122 response_t *pkt); 123 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 124 int fn, void *iocb, int flags); 125 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 126 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 127 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 128 struct atio_from_isp *atio, uint16_t status, int qfull); 129 static void qlt_disable_vha(struct scsi_qla_host *vha); 130 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 131 static void qlt_send_notify_ack(struct qla_qpair *qpair, 132 struct imm_ntfy_from_isp *ntfy, 133 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 134 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 135 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 136 struct imm_ntfy_from_isp *imm, int ha_locked); 137 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 138 fc_port_t *fcport, bool local); 139 void qlt_unreg_sess(struct fc_port *sess); 140 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 141 struct abts_recv_from_24xx *); 142 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 143 uint16_t); 144 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 145 static inline uint32_t qlt_make_handle(struct qla_qpair *); 146 147 /* 148 * Global Variables 149 */ 150 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 151 struct kmem_cache *qla_tgt_plogi_cachep; 152 static mempool_t *qla_tgt_mgmt_cmd_mempool; 153 static struct workqueue_struct *qla_tgt_wq; 154 static DEFINE_MUTEX(qla_tgt_mutex); 155 static LIST_HEAD(qla_tgt_glist); 156 157 static const char *prot_op_str(u32 prot_op) 158 { 159 switch (prot_op) { 160 case TARGET_PROT_NORMAL: return "NORMAL"; 161 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 162 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 163 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 164 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 165 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 166 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 167 default: return "UNKNOWN"; 168 } 169 } 170 171 /* This API intentionally takes dest as a parameter, rather than returning 172 * int value to avoid caller forgetting to issue wmb() after the store */ 173 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 174 { 175 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 176 *dest = atomic_inc_return(&base_vha->generation_tick); 177 /* memory barrier */ 178 wmb(); 179 } 180 181 /* Might release hw lock, then reaquire!! */ 182 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 183 { 184 /* Send marker if required */ 185 if (unlikely(vha->marker_needed != 0)) { 186 int rc = qla2x00_issue_marker(vha, vha_locked); 187 188 if (rc != QLA_SUCCESS) { 189 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 190 "qla_target(%d): issue_marker() failed\n", 191 vha->vp_idx); 192 } 193 return rc; 194 } 195 return QLA_SUCCESS; 196 } 197 198 static inline 199 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 200 uint8_t *d_id) 201 { 202 struct scsi_qla_host *host; 203 uint32_t key = 0; 204 205 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) && 206 (vha->d_id.b.al_pa == d_id[2])) 207 return vha; 208 209 key = (uint32_t)d_id[0] << 16; 210 key |= (uint32_t)d_id[1] << 8; 211 key |= (uint32_t)d_id[2]; 212 213 host = btree_lookup32(&vha->hw->tgt.host_map, key); 214 if (!host) 215 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 216 "Unable to find host %06x\n", key); 217 218 return host; 219 } 220 221 static inline 222 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 223 uint16_t vp_idx) 224 { 225 struct qla_hw_data *ha = vha->hw; 226 227 if (vha->vp_idx == vp_idx) 228 return vha; 229 230 BUG_ON(ha->tgt.tgt_vp_map == NULL); 231 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 232 return ha->tgt.tgt_vp_map[vp_idx].vha; 233 234 return NULL; 235 } 236 237 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 238 { 239 unsigned long flags; 240 241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 242 243 vha->hw->tgt.num_pend_cmds++; 244 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 245 vha->qla_stats.stat_max_pend_cmds = 246 vha->hw->tgt.num_pend_cmds; 247 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 248 } 249 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 250 { 251 unsigned long flags; 252 253 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 254 vha->hw->tgt.num_pend_cmds--; 255 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 256 } 257 258 259 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 260 struct atio_from_isp *atio, uint8_t ha_locked) 261 { 262 struct qla_tgt_sess_op *u; 263 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 264 unsigned long flags; 265 266 if (tgt->tgt_stop) { 267 ql_dbg(ql_dbg_async, vha, 0x502c, 268 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 269 vha->vp_idx); 270 goto out_term; 271 } 272 273 u = kzalloc(sizeof(*u), GFP_ATOMIC); 274 if (u == NULL) 275 goto out_term; 276 277 u->vha = vha; 278 memcpy(&u->atio, atio, sizeof(*atio)); 279 INIT_LIST_HEAD(&u->cmd_list); 280 281 spin_lock_irqsave(&vha->cmd_list_lock, flags); 282 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 283 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 284 285 schedule_delayed_work(&vha->unknown_atio_work, 1); 286 287 out: 288 return; 289 290 out_term: 291 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 292 goto out; 293 } 294 295 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 296 uint8_t ha_locked) 297 { 298 struct qla_tgt_sess_op *u, *t; 299 scsi_qla_host_t *host; 300 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 301 unsigned long flags; 302 uint8_t queued = 0; 303 304 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 305 if (u->aborted) { 306 ql_dbg(ql_dbg_async, vha, 0x502e, 307 "Freeing unknown %s %p, because of Abort\n", 308 "ATIO_TYPE7", u); 309 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 310 &u->atio, ha_locked, 0); 311 goto abort; 312 } 313 314 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 315 if (host != NULL) { 316 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 317 "Requeuing unknown ATIO_TYPE7 %p\n", u); 318 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 319 } else if (tgt->tgt_stop) { 320 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 321 "Freeing unknown %s %p, because tgt is being stopped\n", 322 "ATIO_TYPE7", u); 323 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 324 &u->atio, ha_locked, 0); 325 } else { 326 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 327 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 328 if (!queued) { 329 queued = 1; 330 schedule_delayed_work(&vha->unknown_atio_work, 331 1); 332 } 333 continue; 334 } 335 336 abort: 337 spin_lock_irqsave(&vha->cmd_list_lock, flags); 338 list_del(&u->cmd_list); 339 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 340 kfree(u); 341 } 342 } 343 344 void qlt_unknown_atio_work_fn(struct work_struct *work) 345 { 346 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 347 struct scsi_qla_host, unknown_atio_work); 348 349 qlt_try_to_dequeue_unknown_atios(vha, 0); 350 } 351 352 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 353 struct atio_from_isp *atio, uint8_t ha_locked) 354 { 355 ql_dbg(ql_dbg_tgt, vha, 0xe072, 356 "%s: qla_target(%d): type %x ox_id %04x\n", 357 __func__, vha->vp_idx, atio->u.raw.entry_type, 358 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 359 360 switch (atio->u.raw.entry_type) { 361 case ATIO_TYPE7: 362 { 363 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 364 atio->u.isp24.fcp_hdr.d_id); 365 if (unlikely(NULL == host)) { 366 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 367 "qla_target(%d): Received ATIO_TYPE7 " 368 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 369 atio->u.isp24.fcp_hdr.d_id[0], 370 atio->u.isp24.fcp_hdr.d_id[1], 371 atio->u.isp24.fcp_hdr.d_id[2]); 372 373 374 qlt_queue_unknown_atio(vha, atio, ha_locked); 375 break; 376 } 377 if (unlikely(!list_empty(&vha->unknown_atio_list))) 378 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 379 380 qlt_24xx_atio_pkt(host, atio, ha_locked); 381 break; 382 } 383 384 case IMMED_NOTIFY_TYPE: 385 { 386 struct scsi_qla_host *host = vha; 387 struct imm_ntfy_from_isp *entry = 388 (struct imm_ntfy_from_isp *)atio; 389 390 qlt_issue_marker(vha, ha_locked); 391 392 if ((entry->u.isp24.vp_index != 0xFF) && 393 (entry->u.isp24.nport_handle != 0xFFFF)) { 394 host = qlt_find_host_by_vp_idx(vha, 395 entry->u.isp24.vp_index); 396 if (unlikely(!host)) { 397 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 398 "qla_target(%d): Received " 399 "ATIO (IMMED_NOTIFY_TYPE) " 400 "with unknown vp_index %d\n", 401 vha->vp_idx, entry->u.isp24.vp_index); 402 break; 403 } 404 } 405 qlt_24xx_atio_pkt(host, atio, ha_locked); 406 break; 407 } 408 409 case VP_RPT_ID_IOCB_TYPE: 410 qla24xx_report_id_acquisition(vha, 411 (struct vp_rpt_id_entry_24xx *)atio); 412 break; 413 414 case ABTS_RECV_24XX: 415 { 416 struct abts_recv_from_24xx *entry = 417 (struct abts_recv_from_24xx *)atio; 418 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 419 entry->vp_index); 420 unsigned long flags; 421 422 if (unlikely(!host)) { 423 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 424 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 425 "received, with unknown vp_index %d\n", 426 vha->vp_idx, entry->vp_index); 427 break; 428 } 429 if (!ha_locked) 430 spin_lock_irqsave(&host->hw->hardware_lock, flags); 431 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 432 if (!ha_locked) 433 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 434 break; 435 } 436 437 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 438 439 default: 440 ql_dbg(ql_dbg_tgt, vha, 0xe040, 441 "qla_target(%d): Received unknown ATIO atio " 442 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 443 break; 444 } 445 446 return false; 447 } 448 449 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 450 struct rsp_que *rsp, response_t *pkt) 451 { 452 switch (pkt->entry_type) { 453 case CTIO_CRC2: 454 ql_dbg(ql_dbg_tgt, vha, 0xe073, 455 "qla_target(%d):%s: CRC2 Response pkt\n", 456 vha->vp_idx, __func__); 457 /* fall through */ 458 case CTIO_TYPE7: 459 { 460 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 461 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 462 entry->vp_index); 463 if (unlikely(!host)) { 464 ql_dbg(ql_dbg_tgt, vha, 0xe041, 465 "qla_target(%d): Response pkt (CTIO_TYPE7) " 466 "received, with unknown vp_index %d\n", 467 vha->vp_idx, entry->vp_index); 468 break; 469 } 470 qlt_response_pkt(host, rsp, pkt); 471 break; 472 } 473 474 case IMMED_NOTIFY_TYPE: 475 { 476 struct scsi_qla_host *host = vha; 477 struct imm_ntfy_from_isp *entry = 478 (struct imm_ntfy_from_isp *)pkt; 479 480 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 481 if (unlikely(!host)) { 482 ql_dbg(ql_dbg_tgt, vha, 0xe042, 483 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 484 "received, with unknown vp_index %d\n", 485 vha->vp_idx, entry->u.isp24.vp_index); 486 break; 487 } 488 qlt_response_pkt(host, rsp, pkt); 489 break; 490 } 491 492 case NOTIFY_ACK_TYPE: 493 { 494 struct scsi_qla_host *host = vha; 495 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 496 497 if (0xFF != entry->u.isp24.vp_index) { 498 host = qlt_find_host_by_vp_idx(vha, 499 entry->u.isp24.vp_index); 500 if (unlikely(!host)) { 501 ql_dbg(ql_dbg_tgt, vha, 0xe043, 502 "qla_target(%d): Response " 503 "pkt (NOTIFY_ACK_TYPE) " 504 "received, with unknown " 505 "vp_index %d\n", vha->vp_idx, 506 entry->u.isp24.vp_index); 507 break; 508 } 509 } 510 qlt_response_pkt(host, rsp, pkt); 511 break; 512 } 513 514 case ABTS_RECV_24XX: 515 { 516 struct abts_recv_from_24xx *entry = 517 (struct abts_recv_from_24xx *)pkt; 518 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 519 entry->vp_index); 520 if (unlikely(!host)) { 521 ql_dbg(ql_dbg_tgt, vha, 0xe044, 522 "qla_target(%d): Response pkt " 523 "(ABTS_RECV_24XX) received, with unknown " 524 "vp_index %d\n", vha->vp_idx, entry->vp_index); 525 break; 526 } 527 qlt_response_pkt(host, rsp, pkt); 528 break; 529 } 530 531 case ABTS_RESP_24XX: 532 { 533 struct abts_resp_to_24xx *entry = 534 (struct abts_resp_to_24xx *)pkt; 535 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 536 entry->vp_index); 537 if (unlikely(!host)) { 538 ql_dbg(ql_dbg_tgt, vha, 0xe045, 539 "qla_target(%d): Response pkt " 540 "(ABTS_RECV_24XX) received, with unknown " 541 "vp_index %d\n", vha->vp_idx, entry->vp_index); 542 break; 543 } 544 qlt_response_pkt(host, rsp, pkt); 545 break; 546 } 547 default: 548 qlt_response_pkt(vha, rsp, pkt); 549 break; 550 } 551 552 } 553 554 /* 555 * All qlt_plogi_ack_t operations are protected by hardware_lock 556 */ 557 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 558 struct imm_ntfy_from_isp *ntfy, int type) 559 { 560 struct qla_work_evt *e; 561 562 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 563 if (!e) 564 return QLA_FUNCTION_FAILED; 565 566 e->u.nack.fcport = fcport; 567 e->u.nack.type = type; 568 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 569 return qla2x00_post_work(vha, e); 570 } 571 572 static 573 void qla2x00_async_nack_sp_done(void *s, int res) 574 { 575 struct srb *sp = (struct srb *)s; 576 struct scsi_qla_host *vha = sp->vha; 577 unsigned long flags; 578 579 ql_dbg(ql_dbg_disc, vha, 0x20f2, 580 "Async done-%s res %x %8phC type %d\n", 581 sp->name, res, sp->fcport->port_name, sp->type); 582 583 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 584 sp->fcport->flags &= ~FCF_ASYNC_SENT; 585 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 586 587 switch (sp->type) { 588 case SRB_NACK_PLOGI: 589 sp->fcport->login_gen++; 590 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 591 sp->fcport->logout_on_delete = 1; 592 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 593 sp->fcport->send_els_logo = 0; 594 break; 595 596 case SRB_NACK_PRLI: 597 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 598 sp->fcport->deleted = 0; 599 sp->fcport->send_els_logo = 0; 600 601 if (!sp->fcport->login_succ && 602 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 603 sp->fcport->login_succ = 1; 604 605 vha->fcport_count++; 606 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 607 qla24xx_sched_upd_fcport(sp->fcport); 608 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 609 } else { 610 sp->fcport->login_retry = 0; 611 sp->fcport->disc_state = DSC_LOGIN_COMPLETE; 612 sp->fcport->deleted = 0; 613 sp->fcport->logout_on_delete = 1; 614 } 615 break; 616 617 case SRB_NACK_LOGO: 618 sp->fcport->login_gen++; 619 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 620 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 621 break; 622 } 623 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 624 625 sp->free(sp); 626 } 627 628 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 629 struct imm_ntfy_from_isp *ntfy, int type) 630 { 631 int rval = QLA_FUNCTION_FAILED; 632 srb_t *sp; 633 char *c = NULL; 634 635 fcport->flags |= FCF_ASYNC_SENT; 636 switch (type) { 637 case SRB_NACK_PLOGI: 638 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 639 c = "PLOGI"; 640 break; 641 case SRB_NACK_PRLI: 642 fcport->fw_login_state = DSC_LS_PRLI_PEND; 643 fcport->deleted = 0; 644 c = "PRLI"; 645 break; 646 case SRB_NACK_LOGO: 647 fcport->fw_login_state = DSC_LS_LOGO_PEND; 648 c = "LOGO"; 649 break; 650 } 651 652 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 653 if (!sp) 654 goto done; 655 656 sp->type = type; 657 sp->name = "nack"; 658 659 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 660 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 661 662 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 663 sp->done = qla2x00_async_nack_sp_done; 664 665 ql_dbg(ql_dbg_disc, vha, 0x20f4, 666 "Async-%s %8phC hndl %x %s\n", 667 sp->name, fcport->port_name, sp->handle, c); 668 669 rval = qla2x00_start_sp(sp); 670 if (rval != QLA_SUCCESS) 671 goto done_free_sp; 672 673 return rval; 674 675 done_free_sp: 676 sp->free(sp); 677 done: 678 fcport->flags &= ~FCF_ASYNC_SENT; 679 return rval; 680 } 681 682 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 683 { 684 fc_port_t *t; 685 686 switch (e->u.nack.type) { 687 case SRB_NACK_PRLI: 688 t = e->u.nack.fcport; 689 flush_work(&t->del_work); 690 flush_work(&t->free_work); 691 mutex_lock(&vha->vha_tgt.tgt_mutex); 692 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 693 mutex_unlock(&vha->vha_tgt.tgt_mutex); 694 if (t) { 695 ql_log(ql_log_info, vha, 0xd034, 696 "%s create sess success %p", __func__, t); 697 /* create sess has an extra kref */ 698 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 699 } 700 break; 701 } 702 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 703 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 704 } 705 706 void qla24xx_delete_sess_fn(struct work_struct *work) 707 { 708 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 709 struct qla_hw_data *ha = fcport->vha->hw; 710 711 if (fcport->se_sess) { 712 ha->tgt.tgt_ops->shutdown_sess(fcport); 713 ha->tgt.tgt_ops->put_sess(fcport); 714 } else { 715 qlt_unreg_sess(fcport); 716 } 717 } 718 719 /* 720 * Called from qla2x00_reg_remote_port() 721 */ 722 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 723 { 724 struct qla_hw_data *ha = vha->hw; 725 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 726 struct fc_port *sess = fcport; 727 unsigned long flags; 728 729 if (!vha->hw->tgt.tgt_ops) 730 return; 731 732 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 733 if (tgt->tgt_stop) { 734 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 735 return; 736 } 737 738 if (fcport->disc_state == DSC_DELETE_PEND) { 739 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 740 return; 741 } 742 743 if (!sess->se_sess) { 744 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 745 746 mutex_lock(&vha->vha_tgt.tgt_mutex); 747 sess = qlt_create_sess(vha, fcport, false); 748 mutex_unlock(&vha->vha_tgt.tgt_mutex); 749 750 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 751 } else { 752 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 753 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 754 return; 755 } 756 757 if (!kref_get_unless_zero(&sess->sess_kref)) { 758 ql_dbg(ql_dbg_disc, vha, 0x2107, 759 "%s: kref_get fail sess %8phC \n", 760 __func__, sess->port_name); 761 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 762 return; 763 } 764 765 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 766 "qla_target(%u): %ssession for port %8phC " 767 "(loop ID %d) reappeared\n", vha->vp_idx, 768 sess->local ? "local " : "", sess->port_name, sess->loop_id); 769 770 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 771 "Reappeared sess %p\n", sess); 772 773 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 774 fcport->loop_id, 775 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 776 } 777 778 if (sess && sess->local) { 779 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 780 "qla_target(%u): local session for " 781 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 782 fcport->port_name, sess->loop_id); 783 sess->local = 0; 784 } 785 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 786 787 ha->tgt.tgt_ops->put_sess(sess); 788 } 789 790 /* 791 * This is a zero-base ref-counting solution, since hardware_lock 792 * guarantees that ref_count is not modified concurrently. 793 * Upon successful return content of iocb is undefined 794 */ 795 static struct qlt_plogi_ack_t * 796 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 797 struct imm_ntfy_from_isp *iocb) 798 { 799 struct qlt_plogi_ack_t *pla; 800 801 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 802 if (pla->id.b24 == id->b24) { 803 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 804 "%s %d %8phC Term INOT due to new INOT", 805 __func__, __LINE__, 806 pla->iocb.u.isp24.port_name); 807 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 808 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 809 return pla; 810 } 811 } 812 813 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 814 if (!pla) { 815 ql_dbg(ql_dbg_async, vha, 0x5088, 816 "qla_target(%d): Allocation of plogi_ack failed\n", 817 vha->vp_idx); 818 return NULL; 819 } 820 821 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 822 pla->id = *id; 823 list_add_tail(&pla->list, &vha->plogi_ack_list); 824 825 return pla; 826 } 827 828 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 829 struct qlt_plogi_ack_t *pla) 830 { 831 struct imm_ntfy_from_isp *iocb = &pla->iocb; 832 port_id_t port_id; 833 uint16_t loop_id; 834 fc_port_t *fcport = pla->fcport; 835 836 BUG_ON(!pla->ref_count); 837 pla->ref_count--; 838 839 if (pla->ref_count) 840 return; 841 842 ql_dbg(ql_dbg_disc, vha, 0x5089, 843 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 844 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 845 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 846 iocb->u.isp24.port_id[0], 847 le16_to_cpu(iocb->u.isp24.nport_handle), 848 iocb->u.isp24.exchange_address, iocb->ox_id); 849 850 port_id.b.domain = iocb->u.isp24.port_id[2]; 851 port_id.b.area = iocb->u.isp24.port_id[1]; 852 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 853 port_id.b.rsvd_1 = 0; 854 855 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 856 857 fcport->loop_id = loop_id; 858 fcport->d_id = port_id; 859 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 860 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 861 else 862 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 863 864 list_for_each_entry(fcport, &vha->vp_fcports, list) { 865 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 866 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 867 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 868 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 869 } 870 871 list_del(&pla->list); 872 kmem_cache_free(qla_tgt_plogi_cachep, pla); 873 } 874 875 void 876 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 877 struct fc_port *sess, enum qlt_plogi_link_t link) 878 { 879 struct imm_ntfy_from_isp *iocb = &pla->iocb; 880 /* Inc ref_count first because link might already be pointing at pla */ 881 pla->ref_count++; 882 883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 884 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 885 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 886 sess, link, sess->port_name, 887 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 888 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 889 pla->ref_count, pla, link); 890 891 if (link == QLT_PLOGI_LINK_CONFLICT) { 892 switch (sess->disc_state) { 893 case DSC_DELETED: 894 case DSC_DELETE_PEND: 895 pla->ref_count--; 896 return; 897 default: 898 break; 899 } 900 } 901 902 if (sess->plogi_link[link]) 903 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 904 905 if (link == QLT_PLOGI_LINK_SAME_WWN) 906 pla->fcport = sess; 907 908 sess->plogi_link[link] = pla; 909 } 910 911 typedef struct { 912 /* These fields must be initialized by the caller */ 913 port_id_t id; 914 /* 915 * number of cmds dropped while we were waiting for 916 * initiator to ack LOGO initialize to 1 if LOGO is 917 * triggered by a command, otherwise, to 0 918 */ 919 int cmd_count; 920 921 /* These fields are used by callee */ 922 struct list_head list; 923 } qlt_port_logo_t; 924 925 static void 926 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 927 { 928 qlt_port_logo_t *tmp; 929 int res; 930 931 mutex_lock(&vha->vha_tgt.tgt_mutex); 932 933 list_for_each_entry(tmp, &vha->logo_list, list) { 934 if (tmp->id.b24 == logo->id.b24) { 935 tmp->cmd_count += logo->cmd_count; 936 mutex_unlock(&vha->vha_tgt.tgt_mutex); 937 return; 938 } 939 } 940 941 list_add_tail(&logo->list, &vha->logo_list); 942 943 mutex_unlock(&vha->vha_tgt.tgt_mutex); 944 945 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 946 947 mutex_lock(&vha->vha_tgt.tgt_mutex); 948 list_del(&logo->list); 949 mutex_unlock(&vha->vha_tgt.tgt_mutex); 950 951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 952 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 953 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 954 logo->cmd_count, res); 955 } 956 957 void qlt_free_session_done(struct work_struct *work) 958 { 959 struct fc_port *sess = container_of(work, struct fc_port, 960 free_work); 961 struct qla_tgt *tgt = sess->tgt; 962 struct scsi_qla_host *vha = sess->vha; 963 struct qla_hw_data *ha = vha->hw; 964 unsigned long flags; 965 bool logout_started = false; 966 scsi_qla_host_t *base_vha; 967 struct qlt_plogi_ack_t *own = 968 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 969 970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 971 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 972 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 973 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 974 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 975 sess->logout_on_delete, sess->keep_nport_handle, 976 sess->send_els_logo); 977 978 if (!IS_SW_RESV_ADDR(sess->d_id)) { 979 qla2x00_mark_device_lost(vha, sess, 0, 0); 980 981 if (sess->send_els_logo) { 982 qlt_port_logo_t logo; 983 984 logo.id = sess->d_id; 985 logo.cmd_count = 0; 986 if (!own) 987 qlt_send_first_logo(vha, &logo); 988 sess->send_els_logo = 0; 989 } 990 991 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 992 int rc; 993 994 if (!own || 995 (own && 996 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 997 rc = qla2x00_post_async_logout_work(vha, sess, 998 NULL); 999 if (rc != QLA_SUCCESS) 1000 ql_log(ql_log_warn, vha, 0xf085, 1001 "Schedule logo failed sess %p rc %d\n", 1002 sess, rc); 1003 else 1004 logout_started = true; 1005 } else if (own && (own->iocb.u.isp24.status_subcode == 1006 ELS_PRLI) && ha->flags.rida_fmt2) { 1007 rc = qla2x00_post_async_prlo_work(vha, sess, 1008 NULL); 1009 if (rc != QLA_SUCCESS) 1010 ql_log(ql_log_warn, vha, 0xf085, 1011 "Schedule PRLO failed sess %p rc %d\n", 1012 sess, rc); 1013 else 1014 logout_started = true; 1015 } 1016 } 1017 } 1018 1019 /* 1020 * Release the target session for FC Nexus from fabric module code. 1021 */ 1022 if (sess->se_sess != NULL) 1023 ha->tgt.tgt_ops->free_session(sess); 1024 1025 if (logout_started) { 1026 bool traced = false; 1027 1028 while (!READ_ONCE(sess->logout_completed)) { 1029 if (!traced) { 1030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 1031 "%s: waiting for sess %p logout\n", 1032 __func__, sess); 1033 traced = true; 1034 } 1035 msleep(100); 1036 } 1037 1038 ql_dbg(ql_dbg_disc, vha, 0xf087, 1039 "%s: sess %p logout completed\n", __func__, sess); 1040 } 1041 1042 if (sess->logo_ack_needed) { 1043 sess->logo_ack_needed = 0; 1044 qla24xx_async_notify_ack(vha, sess, 1045 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1046 } 1047 1048 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1049 if (sess->se_sess) { 1050 sess->se_sess = NULL; 1051 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1052 tgt->sess_count--; 1053 } 1054 1055 sess->disc_state = DSC_DELETED; 1056 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1057 sess->deleted = QLA_SESS_DELETED; 1058 1059 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1060 vha->fcport_count--; 1061 sess->login_succ = 0; 1062 } 1063 1064 qla2x00_clear_loop_id(sess); 1065 1066 if (sess->conflict) { 1067 sess->conflict->login_pause = 0; 1068 sess->conflict = NULL; 1069 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1070 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1071 } 1072 1073 { 1074 struct qlt_plogi_ack_t *con = 1075 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1076 struct imm_ntfy_from_isp *iocb; 1077 1078 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1079 1080 if (con) { 1081 iocb = &con->iocb; 1082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1083 "se_sess %p / sess %p port %8phC is gone," 1084 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1085 sess->se_sess, sess, sess->port_name, 1086 own ? "releasing own PLOGI" : "no own PLOGI pending", 1087 own ? own->ref_count : -1, 1088 iocb->u.isp24.port_name, con->ref_count); 1089 qlt_plogi_ack_unref(vha, con); 1090 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1091 } else { 1092 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1093 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1094 sess->se_sess, sess, sess->port_name, 1095 own ? "releasing own PLOGI" : 1096 "no own PLOGI pending", 1097 own ? own->ref_count : -1); 1098 } 1099 1100 if (own) { 1101 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1102 qlt_plogi_ack_unref(vha, own); 1103 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1104 } 1105 } 1106 1107 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1108 1109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1110 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1111 sess, sess->port_name, vha->fcport_count); 1112 1113 if (tgt && (tgt->sess_count == 0)) 1114 wake_up_all(&tgt->waitQ); 1115 1116 if (vha->fcport_count == 0) 1117 wake_up_all(&vha->fcport_waitQ); 1118 1119 base_vha = pci_get_drvdata(ha->pdev); 1120 1121 sess->free_pending = 0; 1122 1123 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1124 return; 1125 1126 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1127 switch (vha->host->active_mode) { 1128 case MODE_INITIATOR: 1129 case MODE_DUAL: 1130 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1131 qla2xxx_wake_dpc(vha); 1132 break; 1133 case MODE_TARGET: 1134 default: 1135 /* no-op */ 1136 break; 1137 } 1138 } 1139 } 1140 1141 /* ha->tgt.sess_lock supposed to be held on entry */ 1142 void qlt_unreg_sess(struct fc_port *sess) 1143 { 1144 struct scsi_qla_host *vha = sess->vha; 1145 unsigned long flags; 1146 1147 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1148 "%s sess %p for deletion %8phC\n", 1149 __func__, sess, sess->port_name); 1150 1151 spin_lock_irqsave(&sess->vha->work_lock, flags); 1152 if (sess->free_pending) { 1153 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1154 return; 1155 } 1156 sess->free_pending = 1; 1157 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1158 1159 if (sess->se_sess) 1160 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1161 1162 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1163 sess->disc_state = DSC_DELETE_PEND; 1164 sess->last_rscn_gen = sess->rscn_gen; 1165 sess->last_login_gen = sess->login_gen; 1166 1167 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1168 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1169 sess->nvme_flag |= NVME_FLAG_DELETING; 1170 schedule_work(&sess->nvme_del_work); 1171 } else { 1172 INIT_WORK(&sess->free_work, qlt_free_session_done); 1173 schedule_work(&sess->free_work); 1174 } 1175 } 1176 EXPORT_SYMBOL(qlt_unreg_sess); 1177 1178 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1179 { 1180 struct qla_hw_data *ha = vha->hw; 1181 struct fc_port *sess = NULL; 1182 uint16_t loop_id; 1183 int res = 0; 1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1185 unsigned long flags; 1186 1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1188 if (loop_id == 0xFFFF) { 1189 /* Global event */ 1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1194 } else { 1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1198 } 1199 1200 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1201 "Using sess for qla_tgt_reset: %p\n", sess); 1202 if (!sess) { 1203 res = -ESRCH; 1204 return res; 1205 } 1206 1207 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1210 mcmd, loop_id); 1211 1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1213 } 1214 1215 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1216 { 1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1218 sess->logout_on_delete = 0; 1219 sess->logo_ack_needed = 0; 1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1221 sess->scan_state = 0; 1222 } 1223 } 1224 1225 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1226 { 1227 struct qla_tgt *tgt = sess->tgt; 1228 unsigned long flags; 1229 u16 sec; 1230 1231 switch (sess->disc_state) { 1232 case DSC_DELETE_PEND: 1233 return; 1234 case DSC_DELETED: 1235 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1236 wake_up_all(&tgt->waitQ); 1237 if (sess->vha->fcport_count == 0) 1238 wake_up_all(&sess->vha->fcport_waitQ); 1239 1240 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1241 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1242 return; 1243 break; 1244 case DSC_UPD_FCPORT: 1245 /* 1246 * This port is not done reporting to upper layer. 1247 * let it finish 1248 */ 1249 sess->next_disc_state = DSC_DELETE_PEND; 1250 sec = jiffies_to_msecs(jiffies - 1251 sess->jiffies_at_registration)/1000; 1252 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1253 sess->sec_since_registration = sec; 1254 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1255 "%s %8phC : Slow Rport registration(%d Sec)\n", 1256 __func__, sess->port_name, sec); 1257 } 1258 return; 1259 default: 1260 break; 1261 } 1262 1263 spin_lock_irqsave(&sess->vha->work_lock, flags); 1264 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1265 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1266 return; 1267 } 1268 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1270 1271 sess->disc_state = DSC_DELETE_PEND; 1272 1273 qla24xx_chk_fcp_state(sess); 1274 1275 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1276 "Scheduling sess %p for deletion %8phC\n", 1277 sess, sess->port_name); 1278 1279 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn); 1280 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1281 } 1282 1283 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1284 { 1285 struct fc_port *sess; 1286 scsi_qla_host_t *vha = tgt->vha; 1287 1288 list_for_each_entry(sess, &vha->vp_fcports, list) { 1289 if (sess->se_sess) 1290 qlt_schedule_sess_for_deletion(sess); 1291 } 1292 1293 /* At this point tgt could be already dead */ 1294 } 1295 1296 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1297 uint16_t *loop_id) 1298 { 1299 struct qla_hw_data *ha = vha->hw; 1300 dma_addr_t gid_list_dma; 1301 struct gid_list_info *gid_list; 1302 char *id_iter; 1303 int res, rc, i; 1304 uint16_t entries; 1305 1306 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1307 &gid_list_dma, GFP_KERNEL); 1308 if (!gid_list) { 1309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1310 "qla_target(%d): DMA Alloc failed of %u\n", 1311 vha->vp_idx, qla2x00_gid_list_size(ha)); 1312 return -ENOMEM; 1313 } 1314 1315 /* Get list of logged in devices */ 1316 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1317 if (rc != QLA_SUCCESS) { 1318 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1319 "qla_target(%d): get_id_list() failed: %x\n", 1320 vha->vp_idx, rc); 1321 res = -EBUSY; 1322 goto out_free_id_list; 1323 } 1324 1325 id_iter = (char *)gid_list; 1326 res = -ENOENT; 1327 for (i = 0; i < entries; i++) { 1328 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1329 1330 if ((gid->al_pa == s_id[2]) && 1331 (gid->area == s_id[1]) && 1332 (gid->domain == s_id[0])) { 1333 *loop_id = le16_to_cpu(gid->loop_id); 1334 res = 0; 1335 break; 1336 } 1337 id_iter += ha->gid_list_info_size; 1338 } 1339 1340 out_free_id_list: 1341 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1342 gid_list, gid_list_dma); 1343 return res; 1344 } 1345 1346 /* 1347 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1348 * Caller must put it. 1349 */ 1350 static struct fc_port *qlt_create_sess( 1351 struct scsi_qla_host *vha, 1352 fc_port_t *fcport, 1353 bool local) 1354 { 1355 struct qla_hw_data *ha = vha->hw; 1356 struct fc_port *sess = fcport; 1357 unsigned long flags; 1358 1359 if (vha->vha_tgt.qla_tgt->tgt_stop) 1360 return NULL; 1361 1362 if (fcport->se_sess) { 1363 if (!kref_get_unless_zero(&sess->sess_kref)) { 1364 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1365 "%s: kref_get_unless_zero failed for %8phC\n", 1366 __func__, sess->port_name); 1367 return NULL; 1368 } 1369 return fcport; 1370 } 1371 sess->tgt = vha->vha_tgt.qla_tgt; 1372 sess->local = local; 1373 1374 /* 1375 * Under normal circumstances we want to logout from firmware when 1376 * session eventually ends and release corresponding nport handle. 1377 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1378 * code will adjust these flags as necessary. 1379 */ 1380 sess->logout_on_delete = 1; 1381 sess->keep_nport_handle = 0; 1382 sess->logout_completed = 0; 1383 1384 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1385 &fcport->port_name[0], sess) < 0) { 1386 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1387 "(%d) %8phC check_initiator_node_acl failed\n", 1388 vha->vp_idx, fcport->port_name); 1389 return NULL; 1390 } else { 1391 kref_init(&fcport->sess_kref); 1392 /* 1393 * Take an extra reference to ->sess_kref here to handle 1394 * fc_port access across ->tgt.sess_lock reaquire. 1395 */ 1396 if (!kref_get_unless_zero(&sess->sess_kref)) { 1397 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1398 "%s: kref_get_unless_zero failed for %8phC\n", 1399 __func__, sess->port_name); 1400 return NULL; 1401 } 1402 1403 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1404 if (!IS_SW_RESV_ADDR(sess->d_id)) 1405 vha->vha_tgt.qla_tgt->sess_count++; 1406 1407 qlt_do_generation_tick(vha, &sess->generation); 1408 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1409 } 1410 1411 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1412 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1413 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1414 vha->vha_tgt.qla_tgt->sess_count); 1415 1416 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1417 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1418 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1419 vha->vp_idx, local ? "local " : "", fcport->port_name, 1420 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1421 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1422 1423 return sess; 1424 } 1425 1426 /* 1427 * max_gen - specifies maximum session generation 1428 * at which this deletion requestion is still valid 1429 */ 1430 void 1431 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1432 { 1433 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1434 struct fc_port *sess = fcport; 1435 unsigned long flags; 1436 1437 if (!vha->hw->tgt.tgt_ops) 1438 return; 1439 1440 if (!tgt) 1441 return; 1442 1443 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1444 if (tgt->tgt_stop) { 1445 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1446 return; 1447 } 1448 if (!sess->se_sess) { 1449 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1450 return; 1451 } 1452 1453 if (max_gen - sess->generation < 0) { 1454 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1455 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1456 "Ignoring stale deletion request for se_sess %p / sess %p" 1457 " for port %8phC, req_gen %d, sess_gen %d\n", 1458 sess->se_sess, sess, sess->port_name, max_gen, 1459 sess->generation); 1460 return; 1461 } 1462 1463 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1464 1465 sess->local = 1; 1466 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1467 qlt_schedule_sess_for_deletion(sess); 1468 } 1469 1470 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1471 { 1472 struct qla_hw_data *ha = tgt->ha; 1473 unsigned long flags; 1474 int res; 1475 /* 1476 * We need to protect against race, when tgt is freed before or 1477 * inside wake_up() 1478 */ 1479 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1480 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1481 "tgt %p, sess_count=%d\n", 1482 tgt, tgt->sess_count); 1483 res = (tgt->sess_count == 0); 1484 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1485 1486 return res; 1487 } 1488 1489 /* Called by tcm_qla2xxx configfs code */ 1490 int qlt_stop_phase1(struct qla_tgt *tgt) 1491 { 1492 struct scsi_qla_host *vha = tgt->vha; 1493 struct qla_hw_data *ha = tgt->ha; 1494 unsigned long flags; 1495 1496 mutex_lock(&ha->optrom_mutex); 1497 mutex_lock(&qla_tgt_mutex); 1498 1499 if (tgt->tgt_stop || tgt->tgt_stopped) { 1500 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1501 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1502 mutex_unlock(&qla_tgt_mutex); 1503 mutex_unlock(&ha->optrom_mutex); 1504 return -EPERM; 1505 } 1506 1507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1508 vha->host_no, vha); 1509 /* 1510 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1511 * Lock is needed, because we still can get an incoming packet. 1512 */ 1513 mutex_lock(&vha->vha_tgt.tgt_mutex); 1514 tgt->tgt_stop = 1; 1515 qlt_clear_tgt_db(tgt); 1516 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1517 mutex_unlock(&qla_tgt_mutex); 1518 1519 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1520 "Waiting for sess works (tgt %p)", tgt); 1521 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1522 while (!list_empty(&tgt->sess_works_list)) { 1523 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1524 flush_scheduled_work(); 1525 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1526 } 1527 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1528 1529 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1530 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1531 1532 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1533 1534 /* Big hammer */ 1535 if (!ha->flags.host_shutting_down && 1536 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1537 qlt_disable_vha(vha); 1538 1539 /* Wait for sessions to clear out (just in case) */ 1540 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1541 mutex_unlock(&ha->optrom_mutex); 1542 1543 return 0; 1544 } 1545 EXPORT_SYMBOL(qlt_stop_phase1); 1546 1547 /* Called by tcm_qla2xxx configfs code */ 1548 void qlt_stop_phase2(struct qla_tgt *tgt) 1549 { 1550 scsi_qla_host_t *vha = tgt->vha; 1551 1552 if (tgt->tgt_stopped) { 1553 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1554 "Already in tgt->tgt_stopped state\n"); 1555 dump_stack(); 1556 return; 1557 } 1558 if (!tgt->tgt_stop) { 1559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1560 "%s: phase1 stop is not completed\n", __func__); 1561 dump_stack(); 1562 return; 1563 } 1564 1565 mutex_lock(&vha->vha_tgt.tgt_mutex); 1566 tgt->tgt_stop = 0; 1567 tgt->tgt_stopped = 1; 1568 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1569 1570 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1571 tgt); 1572 1573 switch (vha->qlini_mode) { 1574 case QLA2XXX_INI_MODE_EXCLUSIVE: 1575 vha->flags.online = 1; 1576 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1577 break; 1578 default: 1579 break; 1580 } 1581 } 1582 EXPORT_SYMBOL(qlt_stop_phase2); 1583 1584 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1585 static void qlt_release(struct qla_tgt *tgt) 1586 { 1587 scsi_qla_host_t *vha = tgt->vha; 1588 void *node; 1589 u64 key = 0; 1590 u16 i; 1591 struct qla_qpair_hint *h; 1592 struct qla_hw_data *ha = vha->hw; 1593 1594 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop && 1595 !tgt->tgt_stopped) 1596 qlt_stop_phase1(tgt); 1597 1598 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1599 qlt_stop_phase2(tgt); 1600 1601 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1602 unsigned long flags; 1603 1604 h = &tgt->qphints[i]; 1605 if (h->qpair) { 1606 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1607 list_del(&h->hint_elem); 1608 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1609 h->qpair = NULL; 1610 } 1611 } 1612 kfree(tgt->qphints); 1613 mutex_lock(&qla_tgt_mutex); 1614 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1615 mutex_unlock(&qla_tgt_mutex); 1616 1617 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1618 btree_remove64(&tgt->lun_qpair_map, key); 1619 1620 btree_destroy64(&tgt->lun_qpair_map); 1621 1622 if (vha->vp_idx) 1623 if (ha->tgt.tgt_ops && 1624 ha->tgt.tgt_ops->remove_target && 1625 vha->vha_tgt.target_lport_ptr) 1626 ha->tgt.tgt_ops->remove_target(vha); 1627 1628 vha->vha_tgt.qla_tgt = NULL; 1629 1630 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1631 "Release of tgt %p finished\n", tgt); 1632 1633 kfree(tgt); 1634 } 1635 1636 /* ha->hardware_lock supposed to be held on entry */ 1637 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1638 const void *param, unsigned int param_size) 1639 { 1640 struct qla_tgt_sess_work_param *prm; 1641 unsigned long flags; 1642 1643 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1644 if (!prm) { 1645 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1646 "qla_target(%d): Unable to create session " 1647 "work, command will be refused", 0); 1648 return -ENOMEM; 1649 } 1650 1651 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1652 "Scheduling work (type %d, prm %p)" 1653 " to find session for param %p (size %d, tgt %p)\n", 1654 type, prm, param, param_size, tgt); 1655 1656 prm->type = type; 1657 memcpy(&prm->tm_iocb, param, param_size); 1658 1659 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1660 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1661 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1662 1663 schedule_work(&tgt->sess_work); 1664 1665 return 0; 1666 } 1667 1668 /* 1669 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1670 */ 1671 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1672 struct imm_ntfy_from_isp *ntfy, 1673 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1674 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1675 { 1676 struct scsi_qla_host *vha = qpair->vha; 1677 struct qla_hw_data *ha = vha->hw; 1678 request_t *pkt; 1679 struct nack_to_isp *nack; 1680 1681 if (!ha->flags.fw_started) 1682 return; 1683 1684 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1685 1686 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1687 if (!pkt) { 1688 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1689 "qla_target(%d): %s failed: unable to allocate " 1690 "request packet\n", vha->vp_idx, __func__); 1691 return; 1692 } 1693 1694 if (vha->vha_tgt.qla_tgt != NULL) 1695 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1696 1697 pkt->entry_type = NOTIFY_ACK_TYPE; 1698 pkt->entry_count = 1; 1699 1700 nack = (struct nack_to_isp *)pkt; 1701 nack->ox_id = ntfy->ox_id; 1702 1703 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1704 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1705 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1706 nack->u.isp24.flags = ntfy->u.isp24.flags & 1707 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1708 } 1709 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1710 nack->u.isp24.status = ntfy->u.isp24.status; 1711 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1712 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1713 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1714 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1715 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1716 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1717 nack->u.isp24.srr_reject_code = srr_reject_code; 1718 nack->u.isp24.srr_reject_code_expl = srr_explan; 1719 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1720 1721 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1722 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1723 vha->vp_idx, nack->u.isp24.status); 1724 1725 /* Memory Barrier */ 1726 wmb(); 1727 qla2x00_start_iocbs(vha, qpair->req); 1728 } 1729 1730 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1731 { 1732 struct scsi_qla_host *vha = mcmd->vha; 1733 struct qla_hw_data *ha = vha->hw; 1734 struct abts_resp_to_24xx *resp; 1735 uint32_t f_ctl, h; 1736 uint8_t *p; 1737 int rc; 1738 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1739 struct qla_qpair *qpair = mcmd->qpair; 1740 1741 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1742 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1743 ha, mcmd->fc_tm_rsp); 1744 1745 rc = qlt_check_reserve_free_req(qpair, 1); 1746 if (rc) { 1747 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1748 "qla_target(%d): %s failed: unable to allocate request packet\n", 1749 vha->vp_idx, __func__); 1750 return -EAGAIN; 1751 } 1752 1753 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1754 memset(resp, 0, sizeof(*resp)); 1755 1756 h = qlt_make_handle(qpair); 1757 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1758 /* 1759 * CTIO type 7 from the firmware doesn't provide a way to 1760 * know the initiator's LOOP ID, hence we can't find 1761 * the session and, so, the command. 1762 */ 1763 return -EAGAIN; 1764 } else { 1765 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1766 } 1767 1768 resp->handle = MAKE_HANDLE(qpair->req->id, h); 1769 resp->entry_type = ABTS_RESP_24XX; 1770 resp->entry_count = 1; 1771 resp->nport_handle = abts->nport_handle; 1772 resp->vp_index = vha->vp_idx; 1773 resp->sof_type = abts->sof_type; 1774 resp->exchange_address = abts->exchange_address; 1775 resp->fcp_hdr_le = abts->fcp_hdr_le; 1776 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1777 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1778 F_CTL_SEQ_INITIATIVE); 1779 p = (uint8_t *)&f_ctl; 1780 resp->fcp_hdr_le.f_ctl[0] = *p++; 1781 resp->fcp_hdr_le.f_ctl[1] = *p++; 1782 resp->fcp_hdr_le.f_ctl[2] = *p; 1783 1784 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1785 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1786 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1787 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1788 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1789 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1790 1791 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1792 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1793 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1794 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1795 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1796 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1797 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1798 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1799 } else { 1800 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1801 resp->payload.ba_rjt.reason_code = 1802 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1803 /* Other bytes are zero */ 1804 } 1805 1806 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1807 1808 /* Memory Barrier */ 1809 wmb(); 1810 if (qpair->reqq_start_iocbs) 1811 qpair->reqq_start_iocbs(qpair); 1812 else 1813 qla2x00_start_iocbs(vha, qpair->req); 1814 1815 return rc; 1816 } 1817 1818 /* 1819 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1820 */ 1821 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1822 struct abts_recv_from_24xx *abts, uint32_t status, 1823 bool ids_reversed) 1824 { 1825 struct scsi_qla_host *vha = qpair->vha; 1826 struct qla_hw_data *ha = vha->hw; 1827 struct abts_resp_to_24xx *resp; 1828 uint32_t f_ctl; 1829 uint8_t *p; 1830 1831 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1832 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1833 ha, abts, status); 1834 1835 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1836 NULL); 1837 if (!resp) { 1838 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1839 "qla_target(%d): %s failed: unable to allocate " 1840 "request packet", vha->vp_idx, __func__); 1841 return; 1842 } 1843 1844 resp->entry_type = ABTS_RESP_24XX; 1845 resp->handle = QLA_TGT_SKIP_HANDLE; 1846 resp->entry_count = 1; 1847 resp->nport_handle = abts->nport_handle; 1848 resp->vp_index = vha->vp_idx; 1849 resp->sof_type = abts->sof_type; 1850 resp->exchange_address = abts->exchange_address; 1851 resp->fcp_hdr_le = abts->fcp_hdr_le; 1852 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1853 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1854 F_CTL_SEQ_INITIATIVE); 1855 p = (uint8_t *)&f_ctl; 1856 resp->fcp_hdr_le.f_ctl[0] = *p++; 1857 resp->fcp_hdr_le.f_ctl[1] = *p++; 1858 resp->fcp_hdr_le.f_ctl[2] = *p; 1859 if (ids_reversed) { 1860 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1861 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1862 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1863 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1864 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1865 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1866 } else { 1867 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1868 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1869 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1870 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1871 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1872 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1873 } 1874 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1875 if (status == FCP_TMF_CMPL) { 1876 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1877 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1878 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1879 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1880 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1881 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1882 } else { 1883 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1884 resp->payload.ba_rjt.reason_code = 1885 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1886 /* Other bytes are zero */ 1887 } 1888 1889 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1890 1891 /* Memory Barrier */ 1892 wmb(); 1893 if (qpair->reqq_start_iocbs) 1894 qpair->reqq_start_iocbs(qpair); 1895 else 1896 qla2x00_start_iocbs(vha, qpair->req); 1897 } 1898 1899 /* 1900 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1901 */ 1902 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1903 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1904 { 1905 struct ctio7_to_24xx *ctio; 1906 u16 tmp; 1907 struct abts_recv_from_24xx *entry; 1908 1909 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1910 if (ctio == NULL) { 1911 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1912 "qla_target(%d): %s failed: unable to allocate " 1913 "request packet\n", vha->vp_idx, __func__); 1914 return; 1915 } 1916 1917 if (mcmd) 1918 /* abts from remote port */ 1919 entry = &mcmd->orig_iocb.abts; 1920 else 1921 /* abts from this driver. */ 1922 entry = (struct abts_recv_from_24xx *)pkt; 1923 1924 /* 1925 * We've got on entrance firmware's response on by us generated 1926 * ABTS response. So, in it ID fields are reversed. 1927 */ 1928 1929 ctio->entry_type = CTIO_TYPE7; 1930 ctio->entry_count = 1; 1931 ctio->nport_handle = entry->nport_handle; 1932 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1933 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1934 ctio->vp_index = vha->vp_idx; 1935 ctio->exchange_addr = entry->exchange_addr_to_abort; 1936 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1937 1938 if (mcmd) { 1939 ctio->initiator_id[0] = entry->fcp_hdr_le.s_id[0]; 1940 ctio->initiator_id[1] = entry->fcp_hdr_le.s_id[1]; 1941 ctio->initiator_id[2] = entry->fcp_hdr_le.s_id[2]; 1942 1943 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1944 tmp |= (mcmd->abort_io_attr << 9); 1945 else if (qpair->retry_term_cnt & 1) 1946 tmp |= (0x4 << 9); 1947 } else { 1948 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1949 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1950 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1951 1952 if (qpair->retry_term_cnt & 1) 1953 tmp |= (0x4 << 9); 1954 } 1955 ctio->u.status1.flags = cpu_to_le16(tmp); 1956 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1957 1958 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1959 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1960 le16_to_cpu(ctio->u.status1.flags), 1961 le16_to_cpu(ctio->u.status1.ox_id), 1962 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1963 1964 /* Memory Barrier */ 1965 wmb(); 1966 if (qpair->reqq_start_iocbs) 1967 qpair->reqq_start_iocbs(qpair); 1968 else 1969 qla2x00_start_iocbs(vha, qpair->req); 1970 1971 if (mcmd) 1972 qlt_build_abts_resp_iocb(mcmd); 1973 else 1974 qlt_24xx_send_abts_resp(qpair, 1975 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1976 1977 } 1978 1979 /* drop cmds for the given lun 1980 * XXX only looks for cmds on the port through which lun reset was recieved 1981 * XXX does not go through the list of other port (which may have cmds 1982 * for the same lun) 1983 */ 1984 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1985 u64 lun, uint8_t *s_id) 1986 { 1987 struct qla_tgt_sess_op *op; 1988 struct qla_tgt_cmd *cmd; 1989 uint32_t key; 1990 unsigned long flags; 1991 1992 key = sid_to_key(s_id); 1993 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1994 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1995 uint32_t op_key; 1996 u64 op_lun; 1997 1998 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1999 op_lun = scsilun_to_int( 2000 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2001 if (op_key == key && op_lun == lun) 2002 op->aborted = true; 2003 } 2004 2005 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2006 uint32_t op_key; 2007 u64 op_lun; 2008 2009 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2010 op_lun = scsilun_to_int( 2011 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2012 if (op_key == key && op_lun == lun) 2013 op->aborted = true; 2014 } 2015 2016 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2017 uint32_t cmd_key; 2018 u64 cmd_lun; 2019 2020 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2021 cmd_lun = scsilun_to_int( 2022 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2023 if (cmd_key == key && cmd_lun == lun) 2024 cmd->aborted = 1; 2025 } 2026 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2027 } 2028 2029 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2030 uint64_t unpacked_lun) 2031 { 2032 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2033 struct qla_qpair_hint *h = NULL; 2034 2035 if (vha->flags.qpairs_available) { 2036 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2037 if (!h) 2038 h = &tgt->qphints[0]; 2039 } else { 2040 h = &tgt->qphints[0]; 2041 } 2042 2043 return h; 2044 } 2045 2046 static void qlt_do_tmr_work(struct work_struct *work) 2047 { 2048 struct qla_tgt_mgmt_cmd *mcmd = 2049 container_of(work, struct qla_tgt_mgmt_cmd, work); 2050 struct qla_hw_data *ha = mcmd->vha->hw; 2051 int rc = EIO; 2052 uint32_t tag; 2053 unsigned long flags; 2054 2055 switch (mcmd->tmr_func) { 2056 case QLA_TGT_ABTS: 2057 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort; 2058 break; 2059 default: 2060 tag = 0; 2061 break; 2062 } 2063 2064 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2065 mcmd->tmr_func, tag); 2066 2067 if (rc != 0) { 2068 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2069 switch (mcmd->tmr_func) { 2070 case QLA_TGT_ABTS: 2071 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2072 qlt_build_abts_resp_iocb(mcmd); 2073 break; 2074 case QLA_TGT_LUN_RESET: 2075 case QLA_TGT_CLEAR_TS: 2076 case QLA_TGT_ABORT_TS: 2077 case QLA_TGT_CLEAR_ACA: 2078 case QLA_TGT_TARGET_RESET: 2079 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2080 qla_sam_status); 2081 break; 2082 2083 case QLA_TGT_ABORT_ALL: 2084 case QLA_TGT_NEXUS_LOSS_SESS: 2085 case QLA_TGT_NEXUS_LOSS: 2086 qlt_send_notify_ack(mcmd->qpair, 2087 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2088 break; 2089 } 2090 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2091 2092 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2093 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2094 mcmd->vha->vp_idx, rc); 2095 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2096 } 2097 } 2098 2099 /* ha->hardware_lock supposed to be held on entry */ 2100 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2101 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2102 { 2103 struct qla_hw_data *ha = vha->hw; 2104 struct qla_tgt_mgmt_cmd *mcmd; 2105 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2106 2107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2108 "qla_target(%d): task abort (tag=%d)\n", 2109 vha->vp_idx, abts->exchange_addr_to_abort); 2110 2111 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2112 if (mcmd == NULL) { 2113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2114 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2115 vha->vp_idx, __func__); 2116 return -ENOMEM; 2117 } 2118 memset(mcmd, 0, sizeof(*mcmd)); 2119 mcmd->cmd_type = TYPE_TGT_TMCMD; 2120 mcmd->sess = sess; 2121 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2122 mcmd->reset_count = ha->base_qpair->chip_reset; 2123 mcmd->tmr_func = QLA_TGT_ABTS; 2124 mcmd->qpair = h->qpair; 2125 mcmd->vha = vha; 2126 2127 /* 2128 * LUN is looked up by target-core internally based on the passed 2129 * abts->exchange_addr_to_abort tag. 2130 */ 2131 mcmd->se_cmd.cpuid = h->cpuid; 2132 2133 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2134 struct qla_tgt_cmd *abort_cmd; 2135 2136 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2137 abts->exchange_addr_to_abort); 2138 if (abort_cmd && abort_cmd->qpair) { 2139 mcmd->qpair = abort_cmd->qpair; 2140 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2141 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2142 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2143 } 2144 } 2145 2146 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2147 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2148 2149 return 0; 2150 } 2151 2152 /* 2153 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2154 */ 2155 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2156 struct abts_recv_from_24xx *abts) 2157 { 2158 struct qla_hw_data *ha = vha->hw; 2159 struct fc_port *sess; 2160 uint32_t tag = abts->exchange_addr_to_abort; 2161 uint8_t s_id[3]; 2162 int rc; 2163 unsigned long flags; 2164 2165 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2167 "qla_target(%d): ABTS: Abort Sequence not " 2168 "supported\n", vha->vp_idx); 2169 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2170 false); 2171 return; 2172 } 2173 2174 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2175 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2176 "qla_target(%d): ABTS: Unknown Exchange " 2177 "Address received\n", vha->vp_idx); 2178 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2179 false); 2180 return; 2181 } 2182 2183 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2184 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2185 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 2186 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 2187 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2188 2189 s_id[0] = abts->fcp_hdr_le.s_id[2]; 2190 s_id[1] = abts->fcp_hdr_le.s_id[1]; 2191 s_id[2] = abts->fcp_hdr_le.s_id[0]; 2192 2193 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2194 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2195 if (!sess) { 2196 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2197 "qla_target(%d): task abort for non-existent session\n", 2198 vha->vp_idx); 2199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2200 2201 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2202 false); 2203 return; 2204 } 2205 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2206 2207 2208 if (sess->deleted) { 2209 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2210 false); 2211 return; 2212 } 2213 2214 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2215 if (rc != 0) { 2216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2217 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2218 vha->vp_idx, rc); 2219 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2220 false); 2221 return; 2222 } 2223 } 2224 2225 /* 2226 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2227 */ 2228 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2229 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2230 { 2231 struct scsi_qla_host *ha = mcmd->vha; 2232 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2233 struct ctio7_to_24xx *ctio; 2234 uint16_t temp; 2235 2236 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2237 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2238 ha, atio, resp_code); 2239 2240 2241 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2242 if (ctio == NULL) { 2243 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2244 "qla_target(%d): %s failed: unable to allocate " 2245 "request packet\n", ha->vp_idx, __func__); 2246 return; 2247 } 2248 2249 ctio->entry_type = CTIO_TYPE7; 2250 ctio->entry_count = 1; 2251 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2252 ctio->nport_handle = mcmd->sess->loop_id; 2253 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2254 ctio->vp_index = ha->vp_idx; 2255 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2256 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2257 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2258 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2259 temp = (atio->u.isp24.attr << 9)| 2260 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2261 ctio->u.status1.flags = cpu_to_le16(temp); 2262 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2263 ctio->u.status1.ox_id = cpu_to_le16(temp); 2264 ctio->u.status1.scsi_status = 2265 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2266 ctio->u.status1.response_len = cpu_to_le16(8); 2267 ctio->u.status1.sense_data[0] = resp_code; 2268 2269 /* Memory Barrier */ 2270 wmb(); 2271 if (qpair->reqq_start_iocbs) 2272 qpair->reqq_start_iocbs(qpair); 2273 else 2274 qla2x00_start_iocbs(ha, qpair->req); 2275 } 2276 2277 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2278 { 2279 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2280 } 2281 EXPORT_SYMBOL(qlt_free_mcmd); 2282 2283 /* 2284 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2285 * reacquire 2286 */ 2287 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2288 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2289 { 2290 struct atio_from_isp *atio = &cmd->atio; 2291 struct ctio7_to_24xx *ctio; 2292 uint16_t temp; 2293 struct scsi_qla_host *vha = cmd->vha; 2294 2295 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2296 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2297 "sense_key=%02x, asc=%02x, ascq=%02x", 2298 vha, atio, scsi_status, sense_key, asc, ascq); 2299 2300 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2301 if (!ctio) { 2302 ql_dbg(ql_dbg_async, vha, 0x3067, 2303 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2304 vha->host_no, __func__); 2305 goto out; 2306 } 2307 2308 ctio->entry_type = CTIO_TYPE7; 2309 ctio->entry_count = 1; 2310 ctio->handle = QLA_TGT_SKIP_HANDLE; 2311 ctio->nport_handle = cmd->sess->loop_id; 2312 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2313 ctio->vp_index = vha->vp_idx; 2314 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2315 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2316 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2317 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2318 temp = (atio->u.isp24.attr << 9) | 2319 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2320 ctio->u.status1.flags = cpu_to_le16(temp); 2321 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2322 ctio->u.status1.ox_id = cpu_to_le16(temp); 2323 ctio->u.status1.scsi_status = 2324 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2325 ctio->u.status1.response_len = cpu_to_le16(18); 2326 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2327 2328 if (ctio->u.status1.residual != 0) 2329 ctio->u.status1.scsi_status |= 2330 cpu_to_le16(SS_RESIDUAL_UNDER); 2331 2332 /* Fixed format sense data. */ 2333 ctio->u.status1.sense_data[0] = 0x70; 2334 ctio->u.status1.sense_data[2] = sense_key; 2335 /* Additional sense length */ 2336 ctio->u.status1.sense_data[7] = 0xa; 2337 /* ASC and ASCQ */ 2338 ctio->u.status1.sense_data[12] = asc; 2339 ctio->u.status1.sense_data[13] = ascq; 2340 2341 /* Memory Barrier */ 2342 wmb(); 2343 2344 if (qpair->reqq_start_iocbs) 2345 qpair->reqq_start_iocbs(qpair); 2346 else 2347 qla2x00_start_iocbs(vha, qpair->req); 2348 2349 out: 2350 return; 2351 } 2352 2353 /* callback from target fabric module code */ 2354 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2355 { 2356 struct scsi_qla_host *vha = mcmd->sess->vha; 2357 struct qla_hw_data *ha = vha->hw; 2358 unsigned long flags; 2359 struct qla_qpair *qpair = mcmd->qpair; 2360 bool free_mcmd = true; 2361 2362 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2363 "TM response mcmd (%p) status %#x state %#x", 2364 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2365 2366 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2367 2368 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2369 /* 2370 * Either the port is not online or this request was from 2371 * previous life, just abort the processing. 2372 */ 2373 ql_dbg(ql_dbg_async, vha, 0xe100, 2374 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2375 vha->flags.online, qla2x00_reset_active(vha), 2376 mcmd->reset_count, qpair->chip_reset); 2377 ha->tgt.tgt_ops->free_mcmd(mcmd); 2378 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2379 return; 2380 } 2381 2382 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2383 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2384 case ELS_LOGO: 2385 case ELS_PRLO: 2386 case ELS_TPRLO: 2387 ql_dbg(ql_dbg_disc, vha, 0x2106, 2388 "TM response logo %8phC status %#x state %#x", 2389 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2390 mcmd->flags); 2391 qlt_schedule_sess_for_deletion(mcmd->sess); 2392 break; 2393 default: 2394 qlt_send_notify_ack(vha->hw->base_qpair, 2395 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2396 break; 2397 } 2398 } else { 2399 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2400 qlt_build_abts_resp_iocb(mcmd); 2401 free_mcmd = false; 2402 } else 2403 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2404 mcmd->fc_tm_rsp); 2405 } 2406 /* 2407 * Make the callback for ->free_mcmd() to queue_work() and invoke 2408 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2409 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2410 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2411 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2412 * qlt_xmit_tm_rsp() returns here.. 2413 */ 2414 if (free_mcmd) 2415 ha->tgt.tgt_ops->free_mcmd(mcmd); 2416 2417 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2418 } 2419 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2420 2421 /* No locks */ 2422 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2423 { 2424 struct qla_tgt_cmd *cmd = prm->cmd; 2425 2426 BUG_ON(cmd->sg_cnt == 0); 2427 2428 prm->sg = (struct scatterlist *)cmd->sg; 2429 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2430 cmd->sg_cnt, cmd->dma_data_direction); 2431 if (unlikely(prm->seg_cnt == 0)) 2432 goto out_err; 2433 2434 prm->cmd->sg_mapped = 1; 2435 2436 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2437 /* 2438 * If greater than four sg entries then we need to allocate 2439 * the continuation entries 2440 */ 2441 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2442 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2443 QLA_TGT_DATASEGS_PER_CMD_24XX, 2444 QLA_TGT_DATASEGS_PER_CONT_24XX); 2445 } else { 2446 /* DIF */ 2447 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2448 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2449 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2450 prm->tot_dsds = prm->seg_cnt; 2451 } else 2452 prm->tot_dsds = prm->seg_cnt; 2453 2454 if (cmd->prot_sg_cnt) { 2455 prm->prot_sg = cmd->prot_sg; 2456 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2457 cmd->prot_sg, cmd->prot_sg_cnt, 2458 cmd->dma_data_direction); 2459 if (unlikely(prm->prot_seg_cnt == 0)) 2460 goto out_err; 2461 2462 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2463 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2464 /* Dif Bundling not support here */ 2465 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2466 cmd->blk_sz); 2467 prm->tot_dsds += prm->prot_seg_cnt; 2468 } else 2469 prm->tot_dsds += prm->prot_seg_cnt; 2470 } 2471 } 2472 2473 return 0; 2474 2475 out_err: 2476 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2477 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2478 0, prm->cmd->sg_cnt); 2479 return -1; 2480 } 2481 2482 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2483 { 2484 struct qla_hw_data *ha; 2485 struct qla_qpair *qpair; 2486 2487 if (!cmd->sg_mapped) 2488 return; 2489 2490 qpair = cmd->qpair; 2491 2492 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2493 cmd->dma_data_direction); 2494 cmd->sg_mapped = 0; 2495 2496 if (cmd->prot_sg_cnt) 2497 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2498 cmd->dma_data_direction); 2499 2500 if (!cmd->ctx) 2501 return; 2502 ha = vha->hw; 2503 if (cmd->ctx_dsd_alloced) 2504 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2505 2506 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2507 } 2508 2509 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2510 uint32_t req_cnt) 2511 { 2512 uint32_t cnt; 2513 struct req_que *req = qpair->req; 2514 2515 if (req->cnt < (req_cnt + 2)) { 2516 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2517 RD_REG_DWORD_RELAXED(req->req_q_out)); 2518 2519 if (req->ring_index < cnt) 2520 req->cnt = cnt - req->ring_index; 2521 else 2522 req->cnt = req->length - (req->ring_index - cnt); 2523 2524 if (unlikely(req->cnt < (req_cnt + 2))) 2525 return -EAGAIN; 2526 } 2527 2528 req->cnt -= req_cnt; 2529 2530 return 0; 2531 } 2532 2533 /* 2534 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2535 */ 2536 static inline void *qlt_get_req_pkt(struct req_que *req) 2537 { 2538 /* Adjust ring index. */ 2539 req->ring_index++; 2540 if (req->ring_index == req->length) { 2541 req->ring_index = 0; 2542 req->ring_ptr = req->ring; 2543 } else { 2544 req->ring_ptr++; 2545 } 2546 return (cont_entry_t *)req->ring_ptr; 2547 } 2548 2549 /* ha->hardware_lock supposed to be held on entry */ 2550 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2551 { 2552 uint32_t h; 2553 int index; 2554 uint8_t found = 0; 2555 struct req_que *req = qpair->req; 2556 2557 h = req->current_outstanding_cmd; 2558 2559 for (index = 1; index < req->num_outstanding_cmds; index++) { 2560 h++; 2561 if (h == req->num_outstanding_cmds) 2562 h = 1; 2563 2564 if (h == QLA_TGT_SKIP_HANDLE) 2565 continue; 2566 2567 if (!req->outstanding_cmds[h]) { 2568 found = 1; 2569 break; 2570 } 2571 } 2572 2573 if (found) { 2574 req->current_outstanding_cmd = h; 2575 } else { 2576 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2577 "qla_target(%d): Ran out of empty cmd slots\n", 2578 qpair->vha->vp_idx); 2579 h = QLA_TGT_NULL_HANDLE; 2580 } 2581 2582 return h; 2583 } 2584 2585 /* ha->hardware_lock supposed to be held on entry */ 2586 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2587 struct qla_tgt_prm *prm) 2588 { 2589 uint32_t h; 2590 struct ctio7_to_24xx *pkt; 2591 struct atio_from_isp *atio = &prm->cmd->atio; 2592 uint16_t temp; 2593 2594 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2595 prm->pkt = pkt; 2596 memset(pkt, 0, sizeof(*pkt)); 2597 2598 pkt->entry_type = CTIO_TYPE7; 2599 pkt->entry_count = (uint8_t)prm->req_cnt; 2600 pkt->vp_index = prm->cmd->vp_idx; 2601 2602 h = qlt_make_handle(qpair); 2603 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2604 /* 2605 * CTIO type 7 from the firmware doesn't provide a way to 2606 * know the initiator's LOOP ID, hence we can't find 2607 * the session and, so, the command. 2608 */ 2609 return -EAGAIN; 2610 } else 2611 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2612 2613 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2614 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2615 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2616 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2617 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2618 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2619 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2620 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2621 temp = atio->u.isp24.attr << 9; 2622 pkt->u.status0.flags |= cpu_to_le16(temp); 2623 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2624 pkt->u.status0.ox_id = cpu_to_le16(temp); 2625 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2626 2627 return 0; 2628 } 2629 2630 /* 2631 * ha->hardware_lock supposed to be held on entry. We have already made sure 2632 * that there is sufficient amount of request entries to not drop it. 2633 */ 2634 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2635 { 2636 int cnt; 2637 struct dsd64 *cur_dsd; 2638 2639 /* Build continuation packets */ 2640 while (prm->seg_cnt > 0) { 2641 cont_a64_entry_t *cont_pkt64 = 2642 (cont_a64_entry_t *)qlt_get_req_pkt( 2643 prm->cmd->qpair->req); 2644 2645 /* 2646 * Make sure that from cont_pkt64 none of 2647 * 64-bit specific fields used for 32-bit 2648 * addressing. Cast to (cont_entry_t *) for 2649 * that. 2650 */ 2651 2652 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2653 2654 cont_pkt64->entry_count = 1; 2655 cont_pkt64->sys_define = 0; 2656 2657 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2658 cur_dsd = cont_pkt64->dsd; 2659 2660 /* Load continuation entry data segments */ 2661 for (cnt = 0; 2662 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2663 cnt++, prm->seg_cnt--) { 2664 append_dsd64(&cur_dsd, prm->sg); 2665 prm->sg = sg_next(prm->sg); 2666 } 2667 } 2668 } 2669 2670 /* 2671 * ha->hardware_lock supposed to be held on entry. We have already made sure 2672 * that there is sufficient amount of request entries to not drop it. 2673 */ 2674 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2675 { 2676 int cnt; 2677 struct dsd64 *cur_dsd; 2678 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2679 2680 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2681 2682 /* Setup packet address segment pointer */ 2683 cur_dsd = &pkt24->u.status0.dsd; 2684 2685 /* Set total data segment count */ 2686 if (prm->seg_cnt) 2687 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2688 2689 if (prm->seg_cnt == 0) { 2690 /* No data transfer */ 2691 cur_dsd->address = 0; 2692 cur_dsd->length = 0; 2693 return; 2694 } 2695 2696 /* If scatter gather */ 2697 2698 /* Load command entry data segments */ 2699 for (cnt = 0; 2700 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2701 cnt++, prm->seg_cnt--) { 2702 append_dsd64(&cur_dsd, prm->sg); 2703 prm->sg = sg_next(prm->sg); 2704 } 2705 2706 qlt_load_cont_data_segments(prm); 2707 } 2708 2709 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2710 { 2711 return cmd->bufflen > 0; 2712 } 2713 2714 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2715 { 2716 struct qla_tgt_cmd *cmd; 2717 struct scsi_qla_host *vha; 2718 2719 /* asc 0x10=dif error */ 2720 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2721 cmd = prm->cmd; 2722 vha = cmd->vha; 2723 /* ASCQ */ 2724 switch (prm->sense_buffer[13]) { 2725 case 1: 2726 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2727 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2728 "se_cmd=%p tag[%x]", 2729 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2730 cmd->atio.u.isp24.exchange_addr); 2731 break; 2732 case 2: 2733 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2734 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2735 "se_cmd=%p tag[%x]", 2736 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2737 cmd->atio.u.isp24.exchange_addr); 2738 break; 2739 case 3: 2740 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2741 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2742 "se_cmd=%p tag[%x]", 2743 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2744 cmd->atio.u.isp24.exchange_addr); 2745 break; 2746 default: 2747 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2748 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2749 "se_cmd=%p tag[%x]", 2750 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2751 cmd->atio.u.isp24.exchange_addr); 2752 break; 2753 } 2754 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2755 } 2756 } 2757 2758 /* 2759 * Called without ha->hardware_lock held 2760 */ 2761 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2762 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2763 uint32_t *full_req_cnt) 2764 { 2765 struct se_cmd *se_cmd = &cmd->se_cmd; 2766 struct qla_qpair *qpair = cmd->qpair; 2767 2768 prm->cmd = cmd; 2769 prm->tgt = cmd->tgt; 2770 prm->pkt = NULL; 2771 prm->rq_result = scsi_status; 2772 prm->sense_buffer = &cmd->sense_buffer[0]; 2773 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2774 prm->sg = NULL; 2775 prm->seg_cnt = -1; 2776 prm->req_cnt = 1; 2777 prm->residual = 0; 2778 prm->add_status_pkt = 0; 2779 prm->prot_sg = NULL; 2780 prm->prot_seg_cnt = 0; 2781 prm->tot_dsds = 0; 2782 2783 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2784 if (qlt_pci_map_calc_cnt(prm) != 0) 2785 return -EAGAIN; 2786 } 2787 2788 *full_req_cnt = prm->req_cnt; 2789 2790 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2791 prm->residual = se_cmd->residual_count; 2792 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2793 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2794 prm->residual, se_cmd->tag, 2795 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2796 cmd->bufflen, prm->rq_result); 2797 prm->rq_result |= SS_RESIDUAL_UNDER; 2798 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2799 prm->residual = se_cmd->residual_count; 2800 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2801 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2802 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2803 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2804 prm->rq_result |= SS_RESIDUAL_OVER; 2805 } 2806 2807 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2808 /* 2809 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2810 * ignored in *xmit_response() below 2811 */ 2812 if (qlt_has_data(cmd)) { 2813 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2814 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2815 (prm->rq_result != 0))) { 2816 prm->add_status_pkt = 1; 2817 (*full_req_cnt)++; 2818 } 2819 } 2820 } 2821 2822 return 0; 2823 } 2824 2825 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2826 int sending_sense) 2827 { 2828 if (cmd->qpair->enable_class_2) 2829 return 0; 2830 2831 if (sending_sense) 2832 return cmd->conf_compl_supported; 2833 else 2834 return cmd->qpair->enable_explicit_conf && 2835 cmd->conf_compl_supported; 2836 } 2837 2838 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2839 struct qla_tgt_prm *prm) 2840 { 2841 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2842 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2843 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2844 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2845 ctio->u.status0.flags |= cpu_to_le16( 2846 CTIO7_FLAGS_EXPLICIT_CONFORM | 2847 CTIO7_FLAGS_CONFORM_REQ); 2848 } 2849 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2850 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2851 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2852 int i; 2853 2854 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2855 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2856 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2857 "Skipping EXPLICIT_CONFORM and " 2858 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2859 "non GOOD status\n"); 2860 goto skip_explict_conf; 2861 } 2862 ctio->u.status1.flags |= cpu_to_le16( 2863 CTIO7_FLAGS_EXPLICIT_CONFORM | 2864 CTIO7_FLAGS_CONFORM_REQ); 2865 } 2866 skip_explict_conf: 2867 ctio->u.status1.flags &= 2868 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2869 ctio->u.status1.flags |= 2870 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2871 ctio->u.status1.scsi_status |= 2872 cpu_to_le16(SS_SENSE_LEN_VALID); 2873 ctio->u.status1.sense_length = 2874 cpu_to_le16(prm->sense_buffer_len); 2875 for (i = 0; i < prm->sense_buffer_len/4; i++) 2876 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2877 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2878 2879 qlt_print_dif_err(prm); 2880 2881 } else { 2882 ctio->u.status1.flags &= 2883 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2884 ctio->u.status1.flags |= 2885 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2886 ctio->u.status1.sense_length = 0; 2887 memset(ctio->u.status1.sense_data, 0, 2888 sizeof(ctio->u.status1.sense_data)); 2889 } 2890 2891 /* Sense with len > 24, is it possible ??? */ 2892 } 2893 2894 static inline int 2895 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2896 { 2897 switch (se_cmd->prot_op) { 2898 case TARGET_PROT_DOUT_INSERT: 2899 case TARGET_PROT_DIN_STRIP: 2900 if (ql2xenablehba_err_chk >= 1) 2901 return 1; 2902 break; 2903 case TARGET_PROT_DOUT_PASS: 2904 case TARGET_PROT_DIN_PASS: 2905 if (ql2xenablehba_err_chk >= 2) 2906 return 1; 2907 break; 2908 case TARGET_PROT_DIN_INSERT: 2909 case TARGET_PROT_DOUT_STRIP: 2910 return 1; 2911 default: 2912 break; 2913 } 2914 return 0; 2915 } 2916 2917 static inline int 2918 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2919 { 2920 switch (se_cmd->prot_op) { 2921 case TARGET_PROT_DIN_INSERT: 2922 case TARGET_PROT_DOUT_INSERT: 2923 case TARGET_PROT_DIN_STRIP: 2924 case TARGET_PROT_DOUT_STRIP: 2925 case TARGET_PROT_DIN_PASS: 2926 case TARGET_PROT_DOUT_PASS: 2927 return 1; 2928 default: 2929 return 0; 2930 } 2931 return 0; 2932 } 2933 2934 /* 2935 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2936 */ 2937 static void 2938 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2939 uint16_t *pfw_prot_opts) 2940 { 2941 struct se_cmd *se_cmd = &cmd->se_cmd; 2942 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2943 scsi_qla_host_t *vha = cmd->tgt->vha; 2944 struct qla_hw_data *ha = vha->hw; 2945 uint32_t t32 = 0; 2946 2947 /* 2948 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2949 * have been immplemented by TCM, before AppTag is avail. 2950 * Look for modesense_handlers[] 2951 */ 2952 ctx->app_tag = 0; 2953 ctx->app_tag_mask[0] = 0x0; 2954 ctx->app_tag_mask[1] = 0x0; 2955 2956 if (IS_PI_UNINIT_CAPABLE(ha)) { 2957 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2958 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2959 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2960 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2961 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2962 } 2963 2964 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2965 2966 switch (se_cmd->prot_type) { 2967 case TARGET_DIF_TYPE0_PROT: 2968 /* 2969 * No check for ql2xenablehba_err_chk, as it 2970 * would be an I/O error if hba tag generation 2971 * is not done. 2972 */ 2973 ctx->ref_tag = cpu_to_le32(lba); 2974 /* enable ALL bytes of the ref tag */ 2975 ctx->ref_tag_mask[0] = 0xff; 2976 ctx->ref_tag_mask[1] = 0xff; 2977 ctx->ref_tag_mask[2] = 0xff; 2978 ctx->ref_tag_mask[3] = 0xff; 2979 break; 2980 case TARGET_DIF_TYPE1_PROT: 2981 /* 2982 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2983 * REF tag, and 16 bit app tag. 2984 */ 2985 ctx->ref_tag = cpu_to_le32(lba); 2986 if (!qla_tgt_ref_mask_check(se_cmd) || 2987 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2988 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2989 break; 2990 } 2991 /* enable ALL bytes of the ref tag */ 2992 ctx->ref_tag_mask[0] = 0xff; 2993 ctx->ref_tag_mask[1] = 0xff; 2994 ctx->ref_tag_mask[2] = 0xff; 2995 ctx->ref_tag_mask[3] = 0xff; 2996 break; 2997 case TARGET_DIF_TYPE2_PROT: 2998 /* 2999 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3000 * tag has to match LBA in CDB + N 3001 */ 3002 ctx->ref_tag = cpu_to_le32(lba); 3003 if (!qla_tgt_ref_mask_check(se_cmd) || 3004 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3005 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3006 break; 3007 } 3008 /* enable ALL bytes of the ref tag */ 3009 ctx->ref_tag_mask[0] = 0xff; 3010 ctx->ref_tag_mask[1] = 0xff; 3011 ctx->ref_tag_mask[2] = 0xff; 3012 ctx->ref_tag_mask[3] = 0xff; 3013 break; 3014 case TARGET_DIF_TYPE3_PROT: 3015 /* For TYPE 3 protection: 16 bit GUARD only */ 3016 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3017 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3018 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3019 break; 3020 } 3021 } 3022 3023 static inline int 3024 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3025 { 3026 struct dsd64 *cur_dsd; 3027 uint32_t transfer_length = 0; 3028 uint32_t data_bytes; 3029 uint32_t dif_bytes; 3030 uint8_t bundling = 1; 3031 struct crc_context *crc_ctx_pkt = NULL; 3032 struct qla_hw_data *ha; 3033 struct ctio_crc2_to_fw *pkt; 3034 dma_addr_t crc_ctx_dma; 3035 uint16_t fw_prot_opts = 0; 3036 struct qla_tgt_cmd *cmd = prm->cmd; 3037 struct se_cmd *se_cmd = &cmd->se_cmd; 3038 uint32_t h; 3039 struct atio_from_isp *atio = &prm->cmd->atio; 3040 struct qla_tc_param tc; 3041 uint16_t t16; 3042 scsi_qla_host_t *vha = cmd->vha; 3043 3044 ha = vha->hw; 3045 3046 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3047 prm->pkt = pkt; 3048 memset(pkt, 0, sizeof(*pkt)); 3049 3050 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3051 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3052 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3053 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3054 3055 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3056 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3057 bundling = 0; 3058 3059 /* Compute dif len and adjust data len to incude protection */ 3060 data_bytes = cmd->bufflen; 3061 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3062 3063 switch (se_cmd->prot_op) { 3064 case TARGET_PROT_DIN_INSERT: 3065 case TARGET_PROT_DOUT_STRIP: 3066 transfer_length = data_bytes; 3067 if (cmd->prot_sg_cnt) 3068 data_bytes += dif_bytes; 3069 break; 3070 case TARGET_PROT_DIN_STRIP: 3071 case TARGET_PROT_DOUT_INSERT: 3072 case TARGET_PROT_DIN_PASS: 3073 case TARGET_PROT_DOUT_PASS: 3074 transfer_length = data_bytes + dif_bytes; 3075 break; 3076 default: 3077 BUG(); 3078 break; 3079 } 3080 3081 if (!qlt_hba_err_chk_enabled(se_cmd)) 3082 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3083 /* HBA error checking enabled */ 3084 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3085 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3086 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3087 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3088 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3089 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3090 } 3091 3092 switch (se_cmd->prot_op) { 3093 case TARGET_PROT_DIN_INSERT: 3094 case TARGET_PROT_DOUT_INSERT: 3095 fw_prot_opts |= PO_MODE_DIF_INSERT; 3096 break; 3097 case TARGET_PROT_DIN_STRIP: 3098 case TARGET_PROT_DOUT_STRIP: 3099 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3100 break; 3101 case TARGET_PROT_DIN_PASS: 3102 case TARGET_PROT_DOUT_PASS: 3103 fw_prot_opts |= PO_MODE_DIF_PASS; 3104 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3105 break; 3106 default:/* Normal Request */ 3107 fw_prot_opts |= PO_MODE_DIF_PASS; 3108 break; 3109 } 3110 3111 /* ---- PKT ---- */ 3112 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3113 pkt->entry_type = CTIO_CRC2; 3114 pkt->entry_count = 1; 3115 pkt->vp_index = cmd->vp_idx; 3116 3117 h = qlt_make_handle(qpair); 3118 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3119 /* 3120 * CTIO type 7 from the firmware doesn't provide a way to 3121 * know the initiator's LOOP ID, hence we can't find 3122 * the session and, so, the command. 3123 */ 3124 return -EAGAIN; 3125 } else 3126 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3127 3128 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 3129 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3130 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3131 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3132 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3133 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3134 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3135 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3136 3137 /* silence compile warning */ 3138 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3139 pkt->ox_id = cpu_to_le16(t16); 3140 3141 t16 = (atio->u.isp24.attr << 9); 3142 pkt->flags |= cpu_to_le16(t16); 3143 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3144 3145 /* Set transfer direction */ 3146 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3147 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3148 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3149 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3150 3151 pkt->dseg_count = prm->tot_dsds; 3152 /* Fibre channel byte count */ 3153 pkt->transfer_length = cpu_to_le32(transfer_length); 3154 3155 /* ----- CRC context -------- */ 3156 3157 /* Allocate CRC context from global pool */ 3158 crc_ctx_pkt = cmd->ctx = 3159 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3160 3161 if (!crc_ctx_pkt) 3162 goto crc_queuing_error; 3163 3164 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3165 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3166 3167 /* Set handle */ 3168 crc_ctx_pkt->handle = pkt->handle; 3169 3170 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3171 3172 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3173 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3174 3175 if (!bundling) { 3176 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd; 3177 } else { 3178 /* 3179 * Configure Bundling if we need to fetch interlaving 3180 * protection PCI accesses 3181 */ 3182 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3183 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3184 crc_ctx_pkt->u.bundling.dseg_count = 3185 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3186 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd; 3187 } 3188 3189 /* Finish the common fields of CRC pkt */ 3190 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3191 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3192 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3193 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3194 3195 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3196 tc.vha = vha; 3197 tc.blk_sz = cmd->blk_sz; 3198 tc.bufflen = cmd->bufflen; 3199 tc.sg = cmd->sg; 3200 tc.prot_sg = cmd->prot_sg; 3201 tc.ctx = crc_ctx_pkt; 3202 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3203 3204 /* Walks data segments */ 3205 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3206 3207 if (!bundling && prm->prot_seg_cnt) { 3208 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3209 prm->tot_dsds, &tc)) 3210 goto crc_queuing_error; 3211 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3212 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3213 goto crc_queuing_error; 3214 3215 if (bundling && prm->prot_seg_cnt) { 3216 /* Walks dif segments */ 3217 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3218 3219 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3220 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3221 prm->prot_seg_cnt, cmd)) 3222 goto crc_queuing_error; 3223 } 3224 return QLA_SUCCESS; 3225 3226 crc_queuing_error: 3227 /* Cleanup will be performed by the caller */ 3228 qpair->req->outstanding_cmds[h] = NULL; 3229 3230 return QLA_FUNCTION_FAILED; 3231 } 3232 3233 /* 3234 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3235 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3236 */ 3237 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3238 uint8_t scsi_status) 3239 { 3240 struct scsi_qla_host *vha = cmd->vha; 3241 struct qla_qpair *qpair = cmd->qpair; 3242 struct ctio7_to_24xx *pkt; 3243 struct qla_tgt_prm prm; 3244 uint32_t full_req_cnt = 0; 3245 unsigned long flags = 0; 3246 int res; 3247 3248 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3249 (cmd->sess && cmd->sess->deleted)) { 3250 cmd->state = QLA_TGT_STATE_PROCESSED; 3251 return 0; 3252 } 3253 3254 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3255 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3256 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3257 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3258 &cmd->se_cmd, qpair->id); 3259 3260 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3261 &full_req_cnt); 3262 if (unlikely(res != 0)) { 3263 return res; 3264 } 3265 3266 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3267 3268 if (xmit_type == QLA_TGT_XMIT_STATUS) 3269 qpair->tgt_counters.core_qla_snd_status++; 3270 else 3271 qpair->tgt_counters.core_qla_que_buf++; 3272 3273 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3274 /* 3275 * Either the port is not online or this request was from 3276 * previous life, just abort the processing. 3277 */ 3278 cmd->state = QLA_TGT_STATE_PROCESSED; 3279 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3280 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3281 vha->flags.online, qla2x00_reset_active(vha), 3282 cmd->reset_count, qpair->chip_reset); 3283 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3284 return 0; 3285 } 3286 3287 /* Does F/W have an IOCBs for this request */ 3288 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3289 if (unlikely(res)) 3290 goto out_unmap_unlock; 3291 3292 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3293 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3294 else 3295 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3296 if (unlikely(res != 0)) { 3297 qpair->req->cnt += full_req_cnt; 3298 goto out_unmap_unlock; 3299 } 3300 3301 pkt = (struct ctio7_to_24xx *)prm.pkt; 3302 3303 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3304 pkt->u.status0.flags |= 3305 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3306 CTIO7_FLAGS_STATUS_MODE_0); 3307 3308 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3309 qlt_load_data_segments(&prm); 3310 3311 if (prm.add_status_pkt == 0) { 3312 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3313 pkt->u.status0.scsi_status = 3314 cpu_to_le16(prm.rq_result); 3315 pkt->u.status0.residual = 3316 cpu_to_le32(prm.residual); 3317 pkt->u.status0.flags |= cpu_to_le16( 3318 CTIO7_FLAGS_SEND_STATUS); 3319 if (qlt_need_explicit_conf(cmd, 0)) { 3320 pkt->u.status0.flags |= 3321 cpu_to_le16( 3322 CTIO7_FLAGS_EXPLICIT_CONFORM | 3323 CTIO7_FLAGS_CONFORM_REQ); 3324 } 3325 } 3326 3327 } else { 3328 /* 3329 * We have already made sure that there is sufficient 3330 * amount of request entries to not drop HW lock in 3331 * req_pkt(). 3332 */ 3333 struct ctio7_to_24xx *ctio = 3334 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3335 qpair->req); 3336 3337 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3338 "Building additional status packet 0x%p.\n", 3339 ctio); 3340 3341 /* 3342 * T10Dif: ctio_crc2_to_fw overlay ontop of 3343 * ctio7_to_24xx 3344 */ 3345 memcpy(ctio, pkt, sizeof(*ctio)); 3346 /* reset back to CTIO7 */ 3347 ctio->entry_count = 1; 3348 ctio->entry_type = CTIO_TYPE7; 3349 ctio->dseg_count = 0; 3350 ctio->u.status1.flags &= ~cpu_to_le16( 3351 CTIO7_FLAGS_DATA_IN); 3352 3353 /* Real finish is ctio_m1's finish */ 3354 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3355 pkt->u.status0.flags |= cpu_to_le16( 3356 CTIO7_FLAGS_DONT_RET_CTIO); 3357 3358 /* qlt_24xx_init_ctio_to_isp will correct 3359 * all neccessary fields that's part of CTIO7. 3360 * There should be no residual of CTIO-CRC2 data. 3361 */ 3362 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3363 &prm); 3364 } 3365 } else 3366 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3367 3368 3369 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3370 cmd->cmd_sent_to_fw = 1; 3371 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3372 3373 /* Memory Barrier */ 3374 wmb(); 3375 if (qpair->reqq_start_iocbs) 3376 qpair->reqq_start_iocbs(qpair); 3377 else 3378 qla2x00_start_iocbs(vha, qpair->req); 3379 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3380 3381 return 0; 3382 3383 out_unmap_unlock: 3384 qlt_unmap_sg(vha, cmd); 3385 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3386 3387 return res; 3388 } 3389 EXPORT_SYMBOL(qlt_xmit_response); 3390 3391 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3392 { 3393 struct ctio7_to_24xx *pkt; 3394 struct scsi_qla_host *vha = cmd->vha; 3395 struct qla_tgt *tgt = cmd->tgt; 3396 struct qla_tgt_prm prm; 3397 unsigned long flags = 0; 3398 int res = 0; 3399 struct qla_qpair *qpair = cmd->qpair; 3400 3401 memset(&prm, 0, sizeof(prm)); 3402 prm.cmd = cmd; 3403 prm.tgt = tgt; 3404 prm.sg = NULL; 3405 prm.req_cnt = 1; 3406 3407 /* Calculate number of entries and segments required */ 3408 if (qlt_pci_map_calc_cnt(&prm) != 0) 3409 return -EAGAIN; 3410 3411 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3412 (cmd->sess && cmd->sess->deleted)) { 3413 /* 3414 * Either the port is not online or this request was from 3415 * previous life, just abort the processing. 3416 */ 3417 cmd->aborted = 1; 3418 cmd->write_data_transferred = 0; 3419 cmd->state = QLA_TGT_STATE_DATA_IN; 3420 vha->hw->tgt.tgt_ops->handle_data(cmd); 3421 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3422 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3423 vha->flags.online, qla2x00_reset_active(vha), 3424 cmd->reset_count, qpair->chip_reset); 3425 return 0; 3426 } 3427 3428 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3429 /* Does F/W have an IOCBs for this request */ 3430 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3431 if (res != 0) 3432 goto out_unlock_free_unmap; 3433 if (cmd->se_cmd.prot_op) 3434 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3435 else 3436 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3437 3438 if (unlikely(res != 0)) { 3439 qpair->req->cnt += prm.req_cnt; 3440 goto out_unlock_free_unmap; 3441 } 3442 3443 pkt = (struct ctio7_to_24xx *)prm.pkt; 3444 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3445 CTIO7_FLAGS_STATUS_MODE_0); 3446 3447 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3448 qlt_load_data_segments(&prm); 3449 3450 cmd->state = QLA_TGT_STATE_NEED_DATA; 3451 cmd->cmd_sent_to_fw = 1; 3452 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3453 3454 /* Memory Barrier */ 3455 wmb(); 3456 if (qpair->reqq_start_iocbs) 3457 qpair->reqq_start_iocbs(qpair); 3458 else 3459 qla2x00_start_iocbs(vha, qpair->req); 3460 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3461 3462 return res; 3463 3464 out_unlock_free_unmap: 3465 qlt_unmap_sg(vha, cmd); 3466 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3467 3468 return res; 3469 } 3470 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3471 3472 3473 /* 3474 * it is assumed either hardware_lock or qpair lock is held. 3475 */ 3476 static void 3477 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3478 struct ctio_crc_from_fw *sts) 3479 { 3480 uint8_t *ap = &sts->actual_dif[0]; 3481 uint8_t *ep = &sts->expected_dif[0]; 3482 uint64_t lba = cmd->se_cmd.t_task_lba; 3483 uint8_t scsi_status, sense_key, asc, ascq; 3484 unsigned long flags; 3485 struct scsi_qla_host *vha = cmd->vha; 3486 3487 cmd->trc_flags |= TRC_DIF_ERR; 3488 3489 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3490 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3491 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3492 3493 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3494 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3495 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3496 3497 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3498 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3499 3500 scsi_status = sense_key = asc = ascq = 0; 3501 3502 /* check appl tag */ 3503 if (cmd->e_app_tag != cmd->a_app_tag) { 3504 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3505 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3506 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3507 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3508 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3509 cmd->atio.u.isp24.fcp_hdr.ox_id); 3510 3511 cmd->dif_err_code = DIF_ERR_APP; 3512 scsi_status = SAM_STAT_CHECK_CONDITION; 3513 sense_key = ABORTED_COMMAND; 3514 asc = 0x10; 3515 ascq = 0x2; 3516 } 3517 3518 /* check ref tag */ 3519 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3520 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3521 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", 3522 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3523 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3524 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3525 cmd->atio.u.isp24.fcp_hdr.ox_id); 3526 3527 cmd->dif_err_code = DIF_ERR_REF; 3528 scsi_status = SAM_STAT_CHECK_CONDITION; 3529 sense_key = ABORTED_COMMAND; 3530 asc = 0x10; 3531 ascq = 0x3; 3532 goto out; 3533 } 3534 3535 /* check guard */ 3536 if (cmd->e_guard != cmd->a_guard) { 3537 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3538 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3539 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3540 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3541 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3542 cmd->atio.u.isp24.fcp_hdr.ox_id); 3543 3544 cmd->dif_err_code = DIF_ERR_GRD; 3545 scsi_status = SAM_STAT_CHECK_CONDITION; 3546 sense_key = ABORTED_COMMAND; 3547 asc = 0x10; 3548 ascq = 0x1; 3549 } 3550 out: 3551 switch (cmd->state) { 3552 case QLA_TGT_STATE_NEED_DATA: 3553 /* handle_data will load DIF error code */ 3554 cmd->state = QLA_TGT_STATE_DATA_IN; 3555 vha->hw->tgt.tgt_ops->handle_data(cmd); 3556 break; 3557 default: 3558 spin_lock_irqsave(&cmd->cmd_lock, flags); 3559 if (cmd->aborted) { 3560 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3561 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3562 break; 3563 } 3564 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3565 3566 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3567 ascq); 3568 /* assume scsi status gets out on the wire. 3569 * Will not wait for completion. 3570 */ 3571 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3572 break; 3573 } 3574 } 3575 3576 /* If hardware_lock held on entry, might drop it, then reaquire */ 3577 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3578 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3579 struct imm_ntfy_from_isp *ntfy) 3580 { 3581 struct nack_to_isp *nack; 3582 struct qla_hw_data *ha = vha->hw; 3583 request_t *pkt; 3584 int ret = 0; 3585 3586 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3587 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3588 3589 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3590 if (pkt == NULL) { 3591 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3592 "qla_target(%d): %s failed: unable to allocate " 3593 "request packet\n", vha->vp_idx, __func__); 3594 return -ENOMEM; 3595 } 3596 3597 pkt->entry_type = NOTIFY_ACK_TYPE; 3598 pkt->entry_count = 1; 3599 pkt->handle = QLA_TGT_SKIP_HANDLE; 3600 3601 nack = (struct nack_to_isp *)pkt; 3602 nack->ox_id = ntfy->ox_id; 3603 3604 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3605 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3606 nack->u.isp24.flags = ntfy->u.isp24.flags & 3607 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3608 } 3609 3610 /* terminate */ 3611 nack->u.isp24.flags |= 3612 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3613 3614 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3615 nack->u.isp24.status = ntfy->u.isp24.status; 3616 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3617 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3618 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3619 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3620 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3621 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3622 3623 qla2x00_start_iocbs(vha, vha->req); 3624 return ret; 3625 } 3626 3627 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3628 struct imm_ntfy_from_isp *imm, int ha_locked) 3629 { 3630 int rc; 3631 3632 WARN_ON_ONCE(!ha_locked); 3633 rc = __qlt_send_term_imm_notif(vha, imm); 3634 pr_debug("rc = %d\n", rc); 3635 } 3636 3637 /* 3638 * If hardware_lock held on entry, might drop it, then reaquire 3639 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3640 */ 3641 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3642 struct qla_tgt_cmd *cmd, 3643 struct atio_from_isp *atio) 3644 { 3645 struct scsi_qla_host *vha = qpair->vha; 3646 struct ctio7_to_24xx *ctio24; 3647 struct qla_hw_data *ha = vha->hw; 3648 request_t *pkt; 3649 int ret = 0; 3650 uint16_t temp; 3651 3652 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3653 3654 if (cmd) 3655 vha = cmd->vha; 3656 3657 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3658 if (pkt == NULL) { 3659 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3660 "qla_target(%d): %s failed: unable to allocate " 3661 "request packet\n", vha->vp_idx, __func__); 3662 return -ENOMEM; 3663 } 3664 3665 if (cmd != NULL) { 3666 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3667 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3668 "qla_target(%d): Terminating cmd %p with " 3669 "incorrect state %d\n", vha->vp_idx, cmd, 3670 cmd->state); 3671 } else 3672 ret = 1; 3673 } 3674 3675 qpair->tgt_counters.num_term_xchg_sent++; 3676 pkt->entry_count = 1; 3677 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3678 3679 ctio24 = (struct ctio7_to_24xx *)pkt; 3680 ctio24->entry_type = CTIO_TYPE7; 3681 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3682 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3683 ctio24->vp_index = vha->vp_idx; 3684 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3685 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3686 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3687 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3688 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3689 CTIO7_FLAGS_TERMINATE; 3690 ctio24->u.status1.flags = cpu_to_le16(temp); 3691 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3692 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3693 3694 /* Memory Barrier */ 3695 wmb(); 3696 if (qpair->reqq_start_iocbs) 3697 qpair->reqq_start_iocbs(qpair); 3698 else 3699 qla2x00_start_iocbs(vha, qpair->req); 3700 return ret; 3701 } 3702 3703 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3704 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3705 int ul_abort) 3706 { 3707 struct scsi_qla_host *vha; 3708 unsigned long flags = 0; 3709 int rc; 3710 3711 /* why use different vha? NPIV */ 3712 if (cmd) 3713 vha = cmd->vha; 3714 else 3715 vha = qpair->vha; 3716 3717 if (ha_locked) { 3718 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3719 if (rc == -ENOMEM) 3720 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3721 goto done; 3722 } 3723 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3724 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3725 if (rc == -ENOMEM) 3726 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3727 3728 done: 3729 if (cmd && !ul_abort && !cmd->aborted) { 3730 if (cmd->sg_mapped) 3731 qlt_unmap_sg(vha, cmd); 3732 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3733 } 3734 3735 if (!ha_locked) 3736 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3737 3738 return; 3739 } 3740 3741 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3742 { 3743 struct list_head free_list; 3744 struct qla_tgt_cmd *cmd, *tcmd; 3745 3746 vha->hw->tgt.leak_exchg_thresh_hold = 3747 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3748 3749 cmd = tcmd = NULL; 3750 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3751 INIT_LIST_HEAD(&free_list); 3752 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3753 3754 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3755 list_del(&cmd->cmd_list); 3756 /* This cmd was never sent to TCM. There is no need 3757 * to schedule free or call free_cmd 3758 */ 3759 qlt_free_cmd(cmd); 3760 vha->hw->tgt.num_qfull_cmds_alloc--; 3761 } 3762 } 3763 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3764 } 3765 3766 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3767 { 3768 uint32_t total_leaked; 3769 3770 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3771 3772 if (vha->hw->tgt.leak_exchg_thresh_hold && 3773 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3774 3775 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3776 "Chip reset due to exchange starvation: %d/%d.\n", 3777 total_leaked, vha->hw->cur_fw_xcb_count); 3778 3779 if (IS_P3P_TYPE(vha->hw)) 3780 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3781 else 3782 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3783 qla2xxx_wake_dpc(vha); 3784 } 3785 3786 } 3787 3788 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3789 { 3790 struct qla_tgt *tgt = cmd->tgt; 3791 struct scsi_qla_host *vha = tgt->vha; 3792 struct se_cmd *se_cmd = &cmd->se_cmd; 3793 unsigned long flags; 3794 3795 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3796 "qla_target(%d): terminating exchange for aborted cmd=%p " 3797 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3798 se_cmd->tag); 3799 3800 spin_lock_irqsave(&cmd->cmd_lock, flags); 3801 if (cmd->aborted) { 3802 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3803 /* 3804 * It's normal to see 2 calls in this path: 3805 * 1) XFER Rdy completion + CMD_T_ABORT 3806 * 2) TCM TMR - drain_state_list 3807 */ 3808 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3809 "multiple abort. %p transport_state %x, t_state %x, " 3810 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3811 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3812 return EIO; 3813 } 3814 cmd->aborted = 1; 3815 cmd->trc_flags |= TRC_ABORT; 3816 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3817 3818 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3819 return 0; 3820 } 3821 EXPORT_SYMBOL(qlt_abort_cmd); 3822 3823 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3824 { 3825 struct fc_port *sess = cmd->sess; 3826 3827 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3828 "%s: se_cmd[%p] ox_id %04x\n", 3829 __func__, &cmd->se_cmd, 3830 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3831 3832 BUG_ON(cmd->cmd_in_wq); 3833 3834 if (cmd->sg_mapped) 3835 qlt_unmap_sg(cmd->vha, cmd); 3836 3837 if (!cmd->q_full) 3838 qlt_decr_num_pend_cmds(cmd->vha); 3839 3840 BUG_ON(cmd->sg_mapped); 3841 cmd->jiffies_at_free = get_jiffies_64(); 3842 if (unlikely(cmd->free_sg)) 3843 kfree(cmd->sg); 3844 3845 if (!sess || !sess->se_sess) { 3846 WARN_ON(1); 3847 return; 3848 } 3849 cmd->jiffies_at_free = get_jiffies_64(); 3850 target_free_tag(sess->se_sess, &cmd->se_cmd); 3851 } 3852 EXPORT_SYMBOL(qlt_free_cmd); 3853 3854 /* 3855 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3856 */ 3857 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3858 struct qla_tgt_cmd *cmd, uint32_t status) 3859 { 3860 int term = 0; 3861 struct scsi_qla_host *vha = qpair->vha; 3862 3863 if (cmd->se_cmd.prot_op) 3864 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3865 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3866 "se_cmd=%p tag[%x] op %#x/%s", 3867 cmd->lba, cmd->lba, 3868 cmd->num_blks, &cmd->se_cmd, 3869 cmd->atio.u.isp24.exchange_addr, 3870 cmd->se_cmd.prot_op, 3871 prot_op_str(cmd->se_cmd.prot_op)); 3872 3873 if (ctio != NULL) { 3874 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3875 3876 term = !(c->flags & 3877 cpu_to_le16(OF_TERM_EXCH)); 3878 } else 3879 term = 1; 3880 3881 if (term) 3882 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3883 3884 return term; 3885 } 3886 3887 3888 /* ha->hardware_lock supposed to be held on entry */ 3889 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3890 struct rsp_que *rsp, uint32_t handle, void *ctio) 3891 { 3892 void *cmd = NULL; 3893 struct req_que *req; 3894 int qid = GET_QID(handle); 3895 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3896 3897 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3898 return NULL; 3899 3900 if (qid == rsp->req->id) { 3901 req = rsp->req; 3902 } else if (vha->hw->req_q_map[qid]) { 3903 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3904 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3905 vha->vp_idx, rsp->id, handle); 3906 req = vha->hw->req_q_map[qid]; 3907 } else { 3908 return NULL; 3909 } 3910 3911 h &= QLA_CMD_HANDLE_MASK; 3912 3913 if (h != QLA_TGT_NULL_HANDLE) { 3914 if (unlikely(h >= req->num_outstanding_cmds)) { 3915 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3916 "qla_target(%d): Wrong handle %x received\n", 3917 vha->vp_idx, handle); 3918 return NULL; 3919 } 3920 3921 cmd = (void *) req->outstanding_cmds[h]; 3922 if (unlikely(cmd == NULL)) { 3923 ql_dbg(ql_dbg_async, vha, 0xe053, 3924 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3925 vha->vp_idx, handle, req->id, rsp->id); 3926 return NULL; 3927 } 3928 req->outstanding_cmds[h] = NULL; 3929 } else if (ctio != NULL) { 3930 /* We can't get loop ID from CTIO7 */ 3931 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3932 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3933 "support NULL handles\n", vha->vp_idx); 3934 return NULL; 3935 } 3936 3937 return cmd; 3938 } 3939 3940 /* 3941 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3942 */ 3943 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3944 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3945 { 3946 struct qla_hw_data *ha = vha->hw; 3947 struct se_cmd *se_cmd; 3948 struct qla_tgt_cmd *cmd; 3949 struct qla_qpair *qpair = rsp->qpair; 3950 3951 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3952 /* That could happen only in case of an error/reset/abort */ 3953 if (status != CTIO_SUCCESS) { 3954 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3955 "Intermediate CTIO received" 3956 " (status %x)\n", status); 3957 } 3958 return; 3959 } 3960 3961 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3962 if (cmd == NULL) 3963 return; 3964 3965 se_cmd = &cmd->se_cmd; 3966 cmd->cmd_sent_to_fw = 0; 3967 3968 qlt_unmap_sg(vha, cmd); 3969 3970 if (unlikely(status != CTIO_SUCCESS)) { 3971 switch (status & 0xFFFF) { 3972 case CTIO_INVALID_RX_ID: 3973 if (printk_ratelimit()) 3974 dev_info(&vha->hw->pdev->dev, 3975 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 3976 vha->vp_idx, cmd->atio.u.isp24.attr, 3977 ((cmd->ctio_flags >> 9) & 0xf), 3978 cmd->ctio_flags); 3979 3980 break; 3981 case CTIO_LIP_RESET: 3982 case CTIO_TARGET_RESET: 3983 case CTIO_ABORTED: 3984 /* driver request abort via Terminate exchange */ 3985 case CTIO_TIMEOUT: 3986 /* They are OK */ 3987 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3988 "qla_target(%d): CTIO with " 3989 "status %#x received, state %x, se_cmd %p, " 3990 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3991 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3992 status, cmd->state, se_cmd); 3993 break; 3994 3995 case CTIO_PORT_LOGGED_OUT: 3996 case CTIO_PORT_UNAVAILABLE: 3997 { 3998 int logged_out = 3999 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4000 4001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4002 "qla_target(%d): CTIO with %s status %x " 4003 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4004 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4005 status, cmd->state, se_cmd); 4006 4007 if (logged_out && cmd->sess) { 4008 /* 4009 * Session is already logged out, but we need 4010 * to notify initiator, who's not aware of this 4011 */ 4012 cmd->sess->send_els_logo = 1; 4013 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4014 "%s %d %8phC post del sess\n", 4015 __func__, __LINE__, cmd->sess->port_name); 4016 4017 qlt_schedule_sess_for_deletion(cmd->sess); 4018 } 4019 break; 4020 } 4021 case CTIO_DIF_ERROR: { 4022 struct ctio_crc_from_fw *crc = 4023 (struct ctio_crc_from_fw *)ctio; 4024 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4025 "qla_target(%d): CTIO with DIF_ERROR status %x " 4026 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4027 "expect_dif[0x%llx]\n", 4028 vha->vp_idx, status, cmd->state, se_cmd, 4029 *((u64 *)&crc->actual_dif[0]), 4030 *((u64 *)&crc->expected_dif[0])); 4031 4032 qlt_handle_dif_error(qpair, cmd, ctio); 4033 return; 4034 } 4035 default: 4036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4037 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4038 vha->vp_idx, status, cmd->state, se_cmd); 4039 break; 4040 } 4041 4042 4043 /* "cmd->aborted" means 4044 * cmd is already aborted/terminated, we don't 4045 * need to terminate again. The exchange is already 4046 * cleaned up/freed at FW level. Just cleanup at driver 4047 * level. 4048 */ 4049 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4050 (!cmd->aborted)) { 4051 cmd->trc_flags |= TRC_CTIO_ERR; 4052 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4053 return; 4054 } 4055 } 4056 4057 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4058 cmd->trc_flags |= TRC_CTIO_DONE; 4059 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4060 cmd->state = QLA_TGT_STATE_DATA_IN; 4061 4062 if (status == CTIO_SUCCESS) 4063 cmd->write_data_transferred = 1; 4064 4065 ha->tgt.tgt_ops->handle_data(cmd); 4066 return; 4067 } else if (cmd->aborted) { 4068 cmd->trc_flags |= TRC_CTIO_ABORTED; 4069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4070 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4071 } else { 4072 cmd->trc_flags |= TRC_CTIO_STRANGE; 4073 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4074 "qla_target(%d): A command in state (%d) should " 4075 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4076 } 4077 4078 if (unlikely(status != CTIO_SUCCESS) && 4079 !cmd->aborted) { 4080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4081 dump_stack(); 4082 } 4083 4084 ha->tgt.tgt_ops->free_cmd(cmd); 4085 } 4086 4087 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4088 uint8_t task_codes) 4089 { 4090 int fcp_task_attr; 4091 4092 switch (task_codes) { 4093 case ATIO_SIMPLE_QUEUE: 4094 fcp_task_attr = TCM_SIMPLE_TAG; 4095 break; 4096 case ATIO_HEAD_OF_QUEUE: 4097 fcp_task_attr = TCM_HEAD_TAG; 4098 break; 4099 case ATIO_ORDERED_QUEUE: 4100 fcp_task_attr = TCM_ORDERED_TAG; 4101 break; 4102 case ATIO_ACA_QUEUE: 4103 fcp_task_attr = TCM_ACA_TAG; 4104 break; 4105 case ATIO_UNTAGGED: 4106 fcp_task_attr = TCM_SIMPLE_TAG; 4107 break; 4108 default: 4109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4110 "qla_target: unknown task code %x, use ORDERED instead\n", 4111 task_codes); 4112 fcp_task_attr = TCM_ORDERED_TAG; 4113 break; 4114 } 4115 4116 return fcp_task_attr; 4117 } 4118 4119 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 4120 uint8_t *); 4121 /* 4122 * Process context for I/O path into tcm_qla2xxx code 4123 */ 4124 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4125 { 4126 scsi_qla_host_t *vha = cmd->vha; 4127 struct qla_hw_data *ha = vha->hw; 4128 struct fc_port *sess = cmd->sess; 4129 struct atio_from_isp *atio = &cmd->atio; 4130 unsigned char *cdb; 4131 unsigned long flags; 4132 uint32_t data_length; 4133 int ret, fcp_task_attr, data_dir, bidi = 0; 4134 struct qla_qpair *qpair = cmd->qpair; 4135 4136 cmd->cmd_in_wq = 0; 4137 cmd->trc_flags |= TRC_DO_WORK; 4138 4139 if (cmd->aborted) { 4140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4141 "cmd with tag %u is aborted\n", 4142 cmd->atio.u.isp24.exchange_addr); 4143 goto out_term; 4144 } 4145 4146 spin_lock_init(&cmd->cmd_lock); 4147 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4148 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4149 4150 if (atio->u.isp24.fcp_cmnd.rddata && 4151 atio->u.isp24.fcp_cmnd.wrdata) { 4152 bidi = 1; 4153 data_dir = DMA_TO_DEVICE; 4154 } else if (atio->u.isp24.fcp_cmnd.rddata) 4155 data_dir = DMA_FROM_DEVICE; 4156 else if (atio->u.isp24.fcp_cmnd.wrdata) 4157 data_dir = DMA_TO_DEVICE; 4158 else 4159 data_dir = DMA_NONE; 4160 4161 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4162 atio->u.isp24.fcp_cmnd.task_attr); 4163 data_length = get_datalen_for_atio(atio); 4164 4165 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4166 fcp_task_attr, data_dir, bidi); 4167 if (ret != 0) 4168 goto out_term; 4169 /* 4170 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4171 */ 4172 ha->tgt.tgt_ops->put_sess(sess); 4173 return; 4174 4175 out_term: 4176 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4177 /* 4178 * cmd has not sent to target yet, so pass NULL as the second 4179 * argument to qlt_send_term_exchange() and free the memory here. 4180 */ 4181 cmd->trc_flags |= TRC_DO_WORK_ERR; 4182 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4183 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4184 4185 qlt_decr_num_pend_cmds(vha); 4186 target_free_tag(sess->se_sess, &cmd->se_cmd); 4187 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4188 4189 ha->tgt.tgt_ops->put_sess(sess); 4190 } 4191 4192 static void qlt_do_work(struct work_struct *work) 4193 { 4194 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4195 scsi_qla_host_t *vha = cmd->vha; 4196 unsigned long flags; 4197 4198 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4199 list_del(&cmd->cmd_list); 4200 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4201 4202 __qlt_do_work(cmd); 4203 } 4204 4205 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4206 { 4207 unsigned long flags; 4208 struct qla_hw_data *ha = vha->hw; 4209 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4210 void *node; 4211 u64 key = 0; 4212 4213 ql_log(ql_log_info, vha, 0x706c, 4214 "User update Number of Active Qpairs %d\n", 4215 ha->tgt.num_act_qpairs); 4216 4217 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4218 4219 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4220 btree_remove64(&tgt->lun_qpair_map, key); 4221 4222 ha->base_qpair->lun_cnt = 0; 4223 for (key = 0; key < ha->max_qpairs; key++) 4224 if (ha->queue_pair_map[key]) 4225 ha->queue_pair_map[key]->lun_cnt = 0; 4226 4227 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4228 } 4229 4230 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4231 struct qla_tgt_cmd *cmd) 4232 { 4233 struct qla_qpair *qpair, *qp; 4234 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4235 struct qla_qpair_hint *h; 4236 4237 if (vha->flags.qpairs_available) { 4238 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4239 if (unlikely(!h)) { 4240 /* spread lun to qpair ratio evently */ 4241 int lcnt = 0, rc; 4242 struct scsi_qla_host *base_vha = 4243 pci_get_drvdata(vha->hw->pdev); 4244 4245 qpair = vha->hw->base_qpair; 4246 if (qpair->lun_cnt == 0) { 4247 qpair->lun_cnt++; 4248 h = qla_qpair_to_hint(tgt, qpair); 4249 BUG_ON(!h); 4250 rc = btree_insert64(&tgt->lun_qpair_map, 4251 cmd->unpacked_lun, h, GFP_ATOMIC); 4252 if (rc) { 4253 qpair->lun_cnt--; 4254 ql_log(ql_log_info, vha, 0xd037, 4255 "Unable to insert lun %llx into lun_qpair_map\n", 4256 cmd->unpacked_lun); 4257 } 4258 goto out; 4259 } else { 4260 lcnt = qpair->lun_cnt; 4261 } 4262 4263 h = NULL; 4264 list_for_each_entry(qp, &base_vha->qp_list, 4265 qp_list_elem) { 4266 if (qp->lun_cnt == 0) { 4267 qp->lun_cnt++; 4268 h = qla_qpair_to_hint(tgt, qp); 4269 BUG_ON(!h); 4270 rc = btree_insert64(&tgt->lun_qpair_map, 4271 cmd->unpacked_lun, h, GFP_ATOMIC); 4272 if (rc) { 4273 qp->lun_cnt--; 4274 ql_log(ql_log_info, vha, 0xd038, 4275 "Unable to insert lun %llx into lun_qpair_map\n", 4276 cmd->unpacked_lun); 4277 } 4278 qpair = qp; 4279 goto out; 4280 } else { 4281 if (qp->lun_cnt < lcnt) { 4282 lcnt = qp->lun_cnt; 4283 qpair = qp; 4284 continue; 4285 } 4286 } 4287 } 4288 BUG_ON(!qpair); 4289 qpair->lun_cnt++; 4290 h = qla_qpair_to_hint(tgt, qpair); 4291 BUG_ON(!h); 4292 rc = btree_insert64(&tgt->lun_qpair_map, 4293 cmd->unpacked_lun, h, GFP_ATOMIC); 4294 if (rc) { 4295 qpair->lun_cnt--; 4296 ql_log(ql_log_info, vha, 0xd039, 4297 "Unable to insert lun %llx into lun_qpair_map\n", 4298 cmd->unpacked_lun); 4299 } 4300 } 4301 } else { 4302 h = &tgt->qphints[0]; 4303 } 4304 out: 4305 cmd->qpair = h->qpair; 4306 cmd->se_cmd.cpuid = h->cpuid; 4307 } 4308 4309 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4310 struct fc_port *sess, 4311 struct atio_from_isp *atio) 4312 { 4313 struct se_session *se_sess = sess->se_sess; 4314 struct qla_tgt_cmd *cmd; 4315 int tag, cpu; 4316 4317 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 4318 if (tag < 0) 4319 return NULL; 4320 4321 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4322 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4323 cmd->cmd_type = TYPE_TGT_CMD; 4324 memcpy(&cmd->atio, atio, sizeof(*atio)); 4325 cmd->state = QLA_TGT_STATE_NEW; 4326 cmd->tgt = vha->vha_tgt.qla_tgt; 4327 qlt_incr_num_pend_cmds(vha); 4328 cmd->vha = vha; 4329 cmd->se_cmd.map_tag = tag; 4330 cmd->se_cmd.map_cpu = cpu; 4331 cmd->sess = sess; 4332 cmd->loop_id = sess->loop_id; 4333 cmd->conf_compl_supported = sess->conf_compl_supported; 4334 4335 cmd->trc_flags = 0; 4336 cmd->jiffies_at_alloc = get_jiffies_64(); 4337 4338 cmd->unpacked_lun = scsilun_to_int( 4339 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4340 qlt_assign_qpair(vha, cmd); 4341 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4342 cmd->vp_idx = vha->vp_idx; 4343 4344 return cmd; 4345 } 4346 4347 /* ha->hardware_lock supposed to be held on entry */ 4348 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4349 struct atio_from_isp *atio) 4350 { 4351 struct qla_hw_data *ha = vha->hw; 4352 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4353 struct fc_port *sess; 4354 struct qla_tgt_cmd *cmd; 4355 unsigned long flags; 4356 port_id_t id; 4357 4358 if (unlikely(tgt->tgt_stop)) { 4359 ql_dbg(ql_dbg_io, vha, 0x3061, 4360 "New command while device %p is shutting down\n", tgt); 4361 return -ENODEV; 4362 } 4363 4364 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 4365 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 4366 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 4367 if (IS_SW_RESV_ADDR(id)) 4368 return -EBUSY; 4369 4370 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4371 if (unlikely(!sess)) 4372 return -EFAULT; 4373 4374 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4375 * session deletion, but it's still in sess_del_work wq */ 4376 if (sess->deleted) { 4377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4378 "New command while old session %p is being deleted\n", 4379 sess); 4380 return -EFAULT; 4381 } 4382 4383 /* 4384 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4385 */ 4386 if (!kref_get_unless_zero(&sess->sess_kref)) { 4387 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4388 "%s: kref_get fail, %8phC oxid %x \n", 4389 __func__, sess->port_name, 4390 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4391 return -EFAULT; 4392 } 4393 4394 cmd = qlt_get_tag(vha, sess, atio); 4395 if (!cmd) { 4396 ql_dbg(ql_dbg_io, vha, 0x3062, 4397 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4398 ha->tgt.tgt_ops->put_sess(sess); 4399 return -EBUSY; 4400 } 4401 4402 cmd->cmd_in_wq = 1; 4403 cmd->trc_flags |= TRC_NEW_CMD; 4404 4405 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4406 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4407 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4408 4409 INIT_WORK(&cmd->work, qlt_do_work); 4410 if (vha->flags.qpairs_available) { 4411 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4412 } else if (ha->msix_count) { 4413 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4414 queue_work_on(smp_processor_id(), qla_tgt_wq, 4415 &cmd->work); 4416 else 4417 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4418 &cmd->work); 4419 } else { 4420 queue_work(qla_tgt_wq, &cmd->work); 4421 } 4422 4423 return 0; 4424 } 4425 4426 /* ha->hardware_lock supposed to be held on entry */ 4427 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4428 int fn, void *iocb, int flags) 4429 { 4430 struct scsi_qla_host *vha = sess->vha; 4431 struct qla_hw_data *ha = vha->hw; 4432 struct qla_tgt_mgmt_cmd *mcmd; 4433 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4434 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4435 4436 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4437 if (!mcmd) { 4438 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4439 "qla_target(%d): Allocation of management " 4440 "command failed, some commands and their data could " 4441 "leak\n", vha->vp_idx); 4442 return -ENOMEM; 4443 } 4444 memset(mcmd, 0, sizeof(*mcmd)); 4445 mcmd->sess = sess; 4446 4447 if (iocb) { 4448 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4449 sizeof(mcmd->orig_iocb.imm_ntfy)); 4450 } 4451 mcmd->tmr_func = fn; 4452 mcmd->flags = flags; 4453 mcmd->reset_count = ha->base_qpair->chip_reset; 4454 mcmd->qpair = h->qpair; 4455 mcmd->vha = vha; 4456 mcmd->se_cmd.cpuid = h->cpuid; 4457 mcmd->unpacked_lun = lun; 4458 4459 switch (fn) { 4460 case QLA_TGT_LUN_RESET: 4461 case QLA_TGT_CLEAR_TS: 4462 case QLA_TGT_ABORT_TS: 4463 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4464 /* fall through */ 4465 case QLA_TGT_CLEAR_ACA: 4466 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4467 mcmd->qpair = h->qpair; 4468 mcmd->se_cmd.cpuid = h->cpuid; 4469 break; 4470 4471 case QLA_TGT_TARGET_RESET: 4472 case QLA_TGT_NEXUS_LOSS_SESS: 4473 case QLA_TGT_NEXUS_LOSS: 4474 case QLA_TGT_ABORT_ALL: 4475 default: 4476 /* no-op */ 4477 break; 4478 } 4479 4480 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4481 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4482 &mcmd->work); 4483 4484 return 0; 4485 } 4486 4487 /* ha->hardware_lock supposed to be held on entry */ 4488 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4489 { 4490 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4491 struct qla_hw_data *ha = vha->hw; 4492 struct fc_port *sess; 4493 u64 unpacked_lun; 4494 int fn; 4495 unsigned long flags; 4496 4497 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4498 4499 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4500 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4501 a->u.isp24.fcp_hdr.s_id); 4502 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4503 4504 unpacked_lun = 4505 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4506 4507 if (sess == NULL || sess->deleted) 4508 return -EFAULT; 4509 4510 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4511 } 4512 4513 /* ha->hardware_lock supposed to be held on entry */ 4514 static int __qlt_abort_task(struct scsi_qla_host *vha, 4515 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4516 { 4517 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4518 struct qla_hw_data *ha = vha->hw; 4519 struct qla_tgt_mgmt_cmd *mcmd; 4520 u64 unpacked_lun; 4521 int rc; 4522 4523 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4524 if (mcmd == NULL) { 4525 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4526 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4527 vha->vp_idx, __func__); 4528 return -ENOMEM; 4529 } 4530 memset(mcmd, 0, sizeof(*mcmd)); 4531 4532 mcmd->sess = sess; 4533 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4534 sizeof(mcmd->orig_iocb.imm_ntfy)); 4535 4536 unpacked_lun = 4537 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4538 mcmd->reset_count = ha->base_qpair->chip_reset; 4539 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4540 mcmd->qpair = ha->base_qpair; 4541 4542 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4543 le16_to_cpu(iocb->u.isp2x.seq_id)); 4544 if (rc != 0) { 4545 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4546 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4547 vha->vp_idx, rc); 4548 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4549 return -EFAULT; 4550 } 4551 4552 return 0; 4553 } 4554 4555 /* ha->hardware_lock supposed to be held on entry */ 4556 static int qlt_abort_task(struct scsi_qla_host *vha, 4557 struct imm_ntfy_from_isp *iocb) 4558 { 4559 struct qla_hw_data *ha = vha->hw; 4560 struct fc_port *sess; 4561 int loop_id; 4562 unsigned long flags; 4563 4564 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4565 4566 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4567 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4568 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4569 4570 if (sess == NULL) { 4571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4572 "qla_target(%d): task abort for unexisting " 4573 "session\n", vha->vp_idx); 4574 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4575 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4576 } 4577 4578 return __qlt_abort_task(vha, iocb, sess); 4579 } 4580 4581 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4582 { 4583 if (rc != MBS_COMMAND_COMPLETE) { 4584 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4585 "%s: se_sess %p / sess %p from" 4586 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4587 " LOGO failed: %#x\n", 4588 __func__, 4589 fcport->se_sess, 4590 fcport, 4591 fcport->port_name, fcport->loop_id, 4592 fcport->d_id.b.domain, fcport->d_id.b.area, 4593 fcport->d_id.b.al_pa, rc); 4594 } 4595 4596 fcport->logout_completed = 1; 4597 } 4598 4599 /* 4600 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4601 * 4602 * Schedules sessions with matching port_id/loop_id but different wwn for 4603 * deletion. Returns existing session with matching wwn if present. 4604 * Null otherwise. 4605 */ 4606 struct fc_port * 4607 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4608 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4609 { 4610 struct fc_port *sess = NULL, *other_sess; 4611 uint64_t other_wwn; 4612 4613 *conflict_sess = NULL; 4614 4615 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4616 4617 other_wwn = wwn_to_u64(other_sess->port_name); 4618 4619 if (wwn == other_wwn) { 4620 WARN_ON(sess); 4621 sess = other_sess; 4622 continue; 4623 } 4624 4625 /* find other sess with nport_id collision */ 4626 if (port_id.b24 == other_sess->d_id.b24) { 4627 if (loop_id != other_sess->loop_id) { 4628 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4629 "Invalidating sess %p loop_id %d wwn %llx.\n", 4630 other_sess, other_sess->loop_id, other_wwn); 4631 4632 /* 4633 * logout_on_delete is set by default, but another 4634 * session that has the same s_id/loop_id combo 4635 * might have cleared it when requested this session 4636 * deletion, so don't touch it 4637 */ 4638 qlt_schedule_sess_for_deletion(other_sess); 4639 } else { 4640 /* 4641 * Another wwn used to have our s_id/loop_id 4642 * kill the session, but don't free the loop_id 4643 */ 4644 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, 4645 "Invalidating sess %p loop_id %d wwn %llx.\n", 4646 other_sess, other_sess->loop_id, other_wwn); 4647 4648 other_sess->keep_nport_handle = 1; 4649 if (other_sess->disc_state != DSC_DELETED) 4650 *conflict_sess = other_sess; 4651 qlt_schedule_sess_for_deletion(other_sess); 4652 } 4653 continue; 4654 } 4655 4656 /* find other sess with nport handle collision */ 4657 if ((loop_id == other_sess->loop_id) && 4658 (loop_id != FC_NO_LOOP_ID)) { 4659 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4660 "Invalidating sess %p loop_id %d wwn %llx.\n", 4661 other_sess, other_sess->loop_id, other_wwn); 4662 4663 /* Same loop_id but different s_id 4664 * Ok to kill and logout */ 4665 qlt_schedule_sess_for_deletion(other_sess); 4666 } 4667 } 4668 4669 return sess; 4670 } 4671 4672 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4673 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4674 { 4675 struct qla_tgt_sess_op *op; 4676 struct qla_tgt_cmd *cmd; 4677 uint32_t key; 4678 int count = 0; 4679 unsigned long flags; 4680 4681 key = (((u32)s_id->b.domain << 16) | 4682 ((u32)s_id->b.area << 8) | 4683 ((u32)s_id->b.al_pa)); 4684 4685 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4686 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4687 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4688 4689 if (op_key == key) { 4690 op->aborted = true; 4691 count++; 4692 } 4693 } 4694 4695 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4696 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4697 4698 if (op_key == key) { 4699 op->aborted = true; 4700 count++; 4701 } 4702 } 4703 4704 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4705 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4706 4707 if (cmd_key == key) { 4708 cmd->aborted = 1; 4709 count++; 4710 } 4711 } 4712 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4713 4714 return count; 4715 } 4716 4717 static int qlt_handle_login(struct scsi_qla_host *vha, 4718 struct imm_ntfy_from_isp *iocb) 4719 { 4720 struct fc_port *sess = NULL, *conflict_sess = NULL; 4721 uint64_t wwn; 4722 port_id_t port_id; 4723 uint16_t loop_id, wd3_lo; 4724 int res = 0; 4725 struct qlt_plogi_ack_t *pla; 4726 unsigned long flags; 4727 4728 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4729 4730 port_id.b.domain = iocb->u.isp24.port_id[2]; 4731 port_id.b.area = iocb->u.isp24.port_id[1]; 4732 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4733 port_id.b.rsvd_1 = 0; 4734 4735 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4736 4737 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4738 abort_cmds_for_s_id(vha, &port_id); 4739 4740 if (wwn) { 4741 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4742 sess = qlt_find_sess_invalidate_other(vha, wwn, 4743 port_id, loop_id, &conflict_sess); 4744 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4745 } else { 4746 ql_dbg(ql_dbg_disc, vha, 0xffff, 4747 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4748 __func__, __LINE__, loop_id, port_id.b24); 4749 qlt_send_term_imm_notif(vha, iocb, 1); 4750 goto out; 4751 } 4752 4753 if (IS_SW_RESV_ADDR(port_id)) { 4754 res = 1; 4755 goto out; 4756 } 4757 4758 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4759 if (!pla) { 4760 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4761 "%s %d %8phC Term INOT due to mem alloc fail", 4762 __func__, __LINE__, 4763 iocb->u.isp24.port_name); 4764 qlt_send_term_imm_notif(vha, iocb, 1); 4765 goto out; 4766 } 4767 4768 if (conflict_sess) { 4769 conflict_sess->login_gen++; 4770 qlt_plogi_ack_link(vha, pla, conflict_sess, 4771 QLT_PLOGI_LINK_CONFLICT); 4772 } 4773 4774 if (!sess) { 4775 pla->ref_count++; 4776 ql_dbg(ql_dbg_disc, vha, 0xffff, 4777 "%s %d %8phC post new sess\n", 4778 __func__, __LINE__, iocb->u.isp24.port_name); 4779 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4780 qla24xx_post_newsess_work(vha, &port_id, 4781 iocb->u.isp24.port_name, 4782 iocb->u.isp24.u.plogi.node_name, 4783 pla, FC4_TYPE_UNKNOWN); 4784 else 4785 qla24xx_post_newsess_work(vha, &port_id, 4786 iocb->u.isp24.port_name, NULL, 4787 pla, FC4_TYPE_UNKNOWN); 4788 4789 goto out; 4790 } 4791 4792 if (sess->disc_state == DSC_UPD_FCPORT) { 4793 u16 sec; 4794 4795 /* 4796 * Remote port registration is still going on from 4797 * previous login. Allow it to finish before we 4798 * accept the new login. 4799 */ 4800 sess->next_disc_state = DSC_DELETE_PEND; 4801 sec = jiffies_to_msecs(jiffies - 4802 sess->jiffies_at_registration) / 1000; 4803 if (sess->sec_since_registration < sec && sec && 4804 !(sec % 5)) { 4805 sess->sec_since_registration = sec; 4806 ql_dbg(ql_dbg_disc, vha, 0xffff, 4807 "%s %8phC - Slow Rport registration (%d Sec)\n", 4808 __func__, sess->port_name, sec); 4809 } 4810 4811 if (!conflict_sess) 4812 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4813 4814 qlt_send_term_imm_notif(vha, iocb, 1); 4815 goto out; 4816 } 4817 4818 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4819 sess->d_id = port_id; 4820 sess->login_gen++; 4821 4822 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4823 sess->fw_login_state = DSC_LS_PRLI_PEND; 4824 sess->local = 0; 4825 sess->loop_id = loop_id; 4826 sess->d_id = port_id; 4827 sess->fw_login_state = DSC_LS_PRLI_PEND; 4828 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4829 4830 if (wd3_lo & BIT_7) 4831 sess->conf_compl_supported = 1; 4832 4833 if ((wd3_lo & BIT_4) == 0) 4834 sess->port_type = FCT_INITIATOR; 4835 else 4836 sess->port_type = FCT_TARGET; 4837 4838 } else 4839 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4840 4841 4842 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4843 "%s %d %8phC DS %d\n", 4844 __func__, __LINE__, sess->port_name, sess->disc_state); 4845 4846 switch (sess->disc_state) { 4847 case DSC_DELETED: 4848 qlt_plogi_ack_unref(vha, pla); 4849 break; 4850 4851 default: 4852 /* 4853 * Under normal circumstances we want to release nport handle 4854 * during LOGO process to avoid nport handle leaks inside FW. 4855 * The exception is when LOGO is done while another PLOGI with 4856 * the same nport handle is waiting as might be the case here. 4857 * Note: there is always a possibily of a race where session 4858 * deletion has already started for other reasons (e.g. ACL 4859 * removal) and now PLOGI arrives: 4860 * 1. if PLOGI arrived in FW after nport handle has been freed, 4861 * FW must have assigned this PLOGI a new/same handle and we 4862 * can proceed ACK'ing it as usual when session deletion 4863 * completes. 4864 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4865 * bit reached it, the handle has now been released. We'll 4866 * get an error when we ACK this PLOGI. Nothing will be sent 4867 * back to initiator. Initiator should eventually retry 4868 * PLOGI and situation will correct itself. 4869 */ 4870 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4871 (sess->d_id.b24 == port_id.b24)); 4872 4873 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4874 "%s %d %8phC post del sess\n", 4875 __func__, __LINE__, sess->port_name); 4876 4877 4878 qlt_schedule_sess_for_deletion(sess); 4879 break; 4880 } 4881 out: 4882 return res; 4883 } 4884 4885 /* 4886 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4887 */ 4888 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4889 struct imm_ntfy_from_isp *iocb) 4890 { 4891 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4892 struct qla_hw_data *ha = vha->hw; 4893 struct fc_port *sess = NULL, *conflict_sess = NULL; 4894 uint64_t wwn; 4895 port_id_t port_id; 4896 uint16_t loop_id; 4897 uint16_t wd3_lo; 4898 int res = 0; 4899 unsigned long flags; 4900 4901 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4902 4903 port_id.b.domain = iocb->u.isp24.port_id[2]; 4904 port_id.b.area = iocb->u.isp24.port_id[1]; 4905 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4906 port_id.b.rsvd_1 = 0; 4907 4908 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4909 4910 ql_dbg(ql_dbg_disc, vha, 0xf026, 4911 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4912 vha->vp_idx, iocb->u.isp24.port_id[2], 4913 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4914 iocb->u.isp24.status_subcode, loop_id, 4915 iocb->u.isp24.port_name); 4916 4917 /* res = 1 means ack at the end of thread 4918 * res = 0 means ack async/later. 4919 */ 4920 switch (iocb->u.isp24.status_subcode) { 4921 case ELS_PLOGI: 4922 res = qlt_handle_login(vha, iocb); 4923 break; 4924 4925 case ELS_PRLI: 4926 if (N2N_TOPO(ha)) { 4927 sess = qla2x00_find_fcport_by_wwpn(vha, 4928 iocb->u.isp24.port_name, 1); 4929 4930 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4931 ql_dbg(ql_dbg_disc, vha, 0xffff, 4932 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4933 __func__, __LINE__, 4934 iocb->u.isp24.port_name); 4935 qlt_send_term_imm_notif(vha, iocb, 1); 4936 break; 4937 } 4938 4939 res = qlt_handle_login(vha, iocb); 4940 break; 4941 } 4942 4943 if (IS_SW_RESV_ADDR(port_id)) { 4944 res = 1; 4945 break; 4946 } 4947 4948 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4949 4950 if (wwn) { 4951 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4952 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4953 loop_id, &conflict_sess); 4954 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4955 } 4956 4957 if (conflict_sess) { 4958 switch (conflict_sess->disc_state) { 4959 case DSC_DELETED: 4960 case DSC_DELETE_PEND: 4961 break; 4962 default: 4963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4964 "PRLI with conflicting sess %p port %8phC\n", 4965 conflict_sess, conflict_sess->port_name); 4966 conflict_sess->fw_login_state = 4967 DSC_LS_PORT_UNAVAIL; 4968 qlt_send_term_imm_notif(vha, iocb, 1); 4969 res = 0; 4970 break; 4971 } 4972 } 4973 4974 if (sess != NULL) { 4975 bool delete = false; 4976 int sec; 4977 4978 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4979 switch (sess->fw_login_state) { 4980 case DSC_LS_PLOGI_PEND: 4981 case DSC_LS_PLOGI_COMP: 4982 case DSC_LS_PRLI_COMP: 4983 break; 4984 default: 4985 delete = true; 4986 break; 4987 } 4988 4989 switch (sess->disc_state) { 4990 case DSC_UPD_FCPORT: 4991 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4992 flags); 4993 4994 sec = jiffies_to_msecs(jiffies - 4995 sess->jiffies_at_registration)/1000; 4996 if (sess->sec_since_registration < sec && sec && 4997 !(sec % 5)) { 4998 sess->sec_since_registration = sec; 4999 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5000 "%s %8phC : Slow Rport registration(%d Sec)\n", 5001 __func__, sess->port_name, sec); 5002 } 5003 qlt_send_term_imm_notif(vha, iocb, 1); 5004 return 0; 5005 5006 case DSC_LOGIN_PEND: 5007 case DSC_GPDB: 5008 case DSC_LOGIN_COMPLETE: 5009 case DSC_ADISC: 5010 delete = false; 5011 break; 5012 default: 5013 break; 5014 } 5015 5016 if (delete) { 5017 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5018 flags); 5019 /* 5020 * Impatient initiator sent PRLI before last 5021 * PLOGI could finish. Will force him to re-try, 5022 * while last one finishes. 5023 */ 5024 ql_log(ql_log_warn, sess->vha, 0xf095, 5025 "sess %p PRLI received, before plogi ack.\n", 5026 sess); 5027 qlt_send_term_imm_notif(vha, iocb, 1); 5028 res = 0; 5029 break; 5030 } 5031 5032 /* 5033 * This shouldn't happen under normal circumstances, 5034 * since we have deleted the old session during PLOGI 5035 */ 5036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5037 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5038 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5039 5040 sess->local = 0; 5041 sess->loop_id = loop_id; 5042 sess->d_id = port_id; 5043 sess->fw_login_state = DSC_LS_PRLI_PEND; 5044 5045 if (wd3_lo & BIT_7) 5046 sess->conf_compl_supported = 1; 5047 5048 if ((wd3_lo & BIT_4) == 0) 5049 sess->port_type = FCT_INITIATOR; 5050 else 5051 sess->port_type = FCT_TARGET; 5052 5053 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5054 } 5055 res = 1; /* send notify ack */ 5056 5057 /* Make session global (not used in fabric mode) */ 5058 if (ha->current_topology != ISP_CFG_F) { 5059 if (sess) { 5060 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5061 "%s %d %8phC post nack\n", 5062 __func__, __LINE__, sess->port_name); 5063 qla24xx_post_nack_work(vha, sess, iocb, 5064 SRB_NACK_PRLI); 5065 res = 0; 5066 } else { 5067 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5068 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5069 qla2xxx_wake_dpc(vha); 5070 } 5071 } else { 5072 if (sess) { 5073 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5074 "%s %d %8phC post nack\n", 5075 __func__, __LINE__, sess->port_name); 5076 qla24xx_post_nack_work(vha, sess, iocb, 5077 SRB_NACK_PRLI); 5078 res = 0; 5079 } 5080 } 5081 break; 5082 5083 case ELS_TPRLO: 5084 if (le16_to_cpu(iocb->u.isp24.flags) & 5085 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5086 loop_id = 0xFFFF; 5087 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5088 res = 1; 5089 break; 5090 } 5091 /* fall through */ 5092 case ELS_LOGO: 5093 case ELS_PRLO: 5094 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5095 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5096 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5097 5098 if (sess) { 5099 sess->login_gen++; 5100 sess->fw_login_state = DSC_LS_LOGO_PEND; 5101 sess->logo_ack_needed = 1; 5102 memcpy(sess->iocb, iocb, IOCB_SIZE); 5103 } 5104 5105 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5106 5107 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5108 "%s: logo %llx res %d sess %p ", 5109 __func__, wwn, res, sess); 5110 if (res == 0) { 5111 /* 5112 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5113 * for LOGO_ACK & sess delete 5114 */ 5115 BUG_ON(!sess); 5116 res = 0; 5117 } else { 5118 /* cmd did not go to upper layer. */ 5119 if (sess) { 5120 qlt_schedule_sess_for_deletion(sess); 5121 res = 0; 5122 } 5123 /* else logo will be ack */ 5124 } 5125 break; 5126 case ELS_PDISC: 5127 case ELS_ADISC: 5128 { 5129 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5130 5131 if (tgt->link_reinit_iocb_pending) { 5132 qlt_send_notify_ack(ha->base_qpair, 5133 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5134 tgt->link_reinit_iocb_pending = 0; 5135 } 5136 5137 sess = qla2x00_find_fcport_by_wwpn(vha, 5138 iocb->u.isp24.port_name, 1); 5139 if (sess) { 5140 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5141 "sess %p lid %d|%d DS %d LS %d\n", 5142 sess, sess->loop_id, loop_id, 5143 sess->disc_state, sess->fw_login_state); 5144 } 5145 5146 res = 1; /* send notify ack */ 5147 break; 5148 } 5149 5150 case ELS_FLOGI: /* should never happen */ 5151 default: 5152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5153 "qla_target(%d): Unsupported ELS command %x " 5154 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5155 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5156 break; 5157 } 5158 5159 ql_dbg(ql_dbg_disc, vha, 0xf026, 5160 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5161 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5162 5163 return res; 5164 } 5165 5166 /* 5167 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5168 */ 5169 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5170 struct imm_ntfy_from_isp *iocb) 5171 { 5172 struct qla_hw_data *ha = vha->hw; 5173 uint32_t add_flags = 0; 5174 int send_notify_ack = 1; 5175 uint16_t status; 5176 5177 status = le16_to_cpu(iocb->u.isp2x.status); 5178 switch (status) { 5179 case IMM_NTFY_LIP_RESET: 5180 { 5181 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5182 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5183 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5184 iocb->u.isp24.status_subcode); 5185 5186 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5187 send_notify_ack = 0; 5188 break; 5189 } 5190 5191 case IMM_NTFY_LIP_LINK_REINIT: 5192 { 5193 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5194 5195 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5196 "qla_target(%d): LINK REINIT (loop %#x, " 5197 "subcode %x)\n", vha->vp_idx, 5198 le16_to_cpu(iocb->u.isp24.nport_handle), 5199 iocb->u.isp24.status_subcode); 5200 if (tgt->link_reinit_iocb_pending) { 5201 qlt_send_notify_ack(ha->base_qpair, 5202 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5203 } 5204 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5205 tgt->link_reinit_iocb_pending = 1; 5206 /* 5207 * QLogic requires to wait after LINK REINIT for possible 5208 * PDISC or ADISC ELS commands 5209 */ 5210 send_notify_ack = 0; 5211 break; 5212 } 5213 5214 case IMM_NTFY_PORT_LOGOUT: 5215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5216 "qla_target(%d): Port logout (loop " 5217 "%#x, subcode %x)\n", vha->vp_idx, 5218 le16_to_cpu(iocb->u.isp24.nport_handle), 5219 iocb->u.isp24.status_subcode); 5220 5221 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5222 send_notify_ack = 0; 5223 /* The sessions will be cleared in the callback, if needed */ 5224 break; 5225 5226 case IMM_NTFY_GLBL_TPRLO: 5227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5228 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5229 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5230 send_notify_ack = 0; 5231 /* The sessions will be cleared in the callback, if needed */ 5232 break; 5233 5234 case IMM_NTFY_PORT_CONFIG: 5235 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5236 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5237 status); 5238 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5239 send_notify_ack = 0; 5240 /* The sessions will be cleared in the callback, if needed */ 5241 break; 5242 5243 case IMM_NTFY_GLBL_LOGO: 5244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5245 "qla_target(%d): Link failure detected\n", 5246 vha->vp_idx); 5247 /* I_T nexus loss */ 5248 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5249 send_notify_ack = 0; 5250 break; 5251 5252 case IMM_NTFY_IOCB_OVERFLOW: 5253 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5254 "qla_target(%d): Cannot provide requested " 5255 "capability (IOCB overflowed the immediate notify " 5256 "resource count)\n", vha->vp_idx); 5257 break; 5258 5259 case IMM_NTFY_ABORT_TASK: 5260 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5261 "qla_target(%d): Abort Task (S %08x I %#x -> " 5262 "L %#x)\n", vha->vp_idx, 5263 le16_to_cpu(iocb->u.isp2x.seq_id), 5264 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5265 le16_to_cpu(iocb->u.isp2x.lun)); 5266 if (qlt_abort_task(vha, iocb) == 0) 5267 send_notify_ack = 0; 5268 break; 5269 5270 case IMM_NTFY_RESOURCE: 5271 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5272 "qla_target(%d): Out of resources, host %ld\n", 5273 vha->vp_idx, vha->host_no); 5274 break; 5275 5276 case IMM_NTFY_MSG_RX: 5277 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5278 "qla_target(%d): Immediate notify task %x\n", 5279 vha->vp_idx, iocb->u.isp2x.task_flags); 5280 break; 5281 5282 case IMM_NTFY_ELS: 5283 if (qlt_24xx_handle_els(vha, iocb) == 0) 5284 send_notify_ack = 0; 5285 break; 5286 default: 5287 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5288 "qla_target(%d): Received unknown immediate " 5289 "notify status %x\n", vha->vp_idx, status); 5290 break; 5291 } 5292 5293 if (send_notify_ack) 5294 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5295 0, 0); 5296 } 5297 5298 /* 5299 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5300 * This function sends busy to ISP 2xxx or 24xx. 5301 */ 5302 static int __qlt_send_busy(struct qla_qpair *qpair, 5303 struct atio_from_isp *atio, uint16_t status) 5304 { 5305 struct scsi_qla_host *vha = qpair->vha; 5306 struct ctio7_to_24xx *ctio24; 5307 struct qla_hw_data *ha = vha->hw; 5308 request_t *pkt; 5309 struct fc_port *sess = NULL; 5310 unsigned long flags; 5311 u16 temp; 5312 port_id_t id; 5313 5314 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 5315 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 5316 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 5317 id.b.rsvd_1 = 0; 5318 5319 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5320 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5321 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5322 if (!sess) { 5323 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5324 return 0; 5325 } 5326 /* Sending marker isn't necessary, since we called from ISR */ 5327 5328 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5329 if (!pkt) { 5330 ql_dbg(ql_dbg_io, vha, 0x3063, 5331 "qla_target(%d): %s failed: unable to allocate " 5332 "request packet", vha->vp_idx, __func__); 5333 return -ENOMEM; 5334 } 5335 5336 qpair->tgt_counters.num_q_full_sent++; 5337 pkt->entry_count = 1; 5338 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5339 5340 ctio24 = (struct ctio7_to_24xx *)pkt; 5341 ctio24->entry_type = CTIO_TYPE7; 5342 ctio24->nport_handle = sess->loop_id; 5343 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5344 ctio24->vp_index = vha->vp_idx; 5345 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5346 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5347 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5348 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5349 temp = (atio->u.isp24.attr << 9) | 5350 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5351 CTIO7_FLAGS_DONT_RET_CTIO; 5352 ctio24->u.status1.flags = cpu_to_le16(temp); 5353 /* 5354 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5355 * if the explicit conformation is used. 5356 */ 5357 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5358 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5359 5360 ctio24->u.status1.residual = get_datalen_for_atio(atio); 5361 5362 if (ctio24->u.status1.residual != 0) 5363 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 5364 5365 /* Memory Barrier */ 5366 wmb(); 5367 if (qpair->reqq_start_iocbs) 5368 qpair->reqq_start_iocbs(qpair); 5369 else 5370 qla2x00_start_iocbs(vha, qpair->req); 5371 return 0; 5372 } 5373 5374 /* 5375 * This routine is used to allocate a command for either a QFull condition 5376 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5377 * out previously. 5378 */ 5379 static void 5380 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5381 struct atio_from_isp *atio, uint16_t status, int qfull) 5382 { 5383 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5384 struct qla_hw_data *ha = vha->hw; 5385 struct fc_port *sess; 5386 struct se_session *se_sess; 5387 struct qla_tgt_cmd *cmd; 5388 int tag, cpu; 5389 unsigned long flags; 5390 5391 if (unlikely(tgt->tgt_stop)) { 5392 ql_dbg(ql_dbg_io, vha, 0x300a, 5393 "New command while device %p is shutting down\n", tgt); 5394 return; 5395 } 5396 5397 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5398 vha->hw->tgt.num_qfull_cmds_dropped++; 5399 if (vha->hw->tgt.num_qfull_cmds_dropped > 5400 vha->qla_stats.stat_max_qfull_cmds_dropped) 5401 vha->qla_stats.stat_max_qfull_cmds_dropped = 5402 vha->hw->tgt.num_qfull_cmds_dropped; 5403 5404 ql_dbg(ql_dbg_io, vha, 0x3068, 5405 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5406 vha->vp_idx, __func__, 5407 vha->hw->tgt.num_qfull_cmds_dropped); 5408 5409 qlt_chk_exch_leak_thresh_hold(vha); 5410 return; 5411 } 5412 5413 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5414 (vha, atio->u.isp24.fcp_hdr.s_id); 5415 if (!sess) 5416 return; 5417 5418 se_sess = sess->se_sess; 5419 5420 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 5421 if (tag < 0) { 5422 ql_dbg(ql_dbg_io, vha, 0x3009, 5423 "qla_target(%d): %s: Allocation of cmd failed\n", 5424 vha->vp_idx, __func__); 5425 5426 vha->hw->tgt.num_qfull_cmds_dropped++; 5427 if (vha->hw->tgt.num_qfull_cmds_dropped > 5428 vha->qla_stats.stat_max_qfull_cmds_dropped) 5429 vha->qla_stats.stat_max_qfull_cmds_dropped = 5430 vha->hw->tgt.num_qfull_cmds_dropped; 5431 5432 qlt_chk_exch_leak_thresh_hold(vha); 5433 return; 5434 } 5435 5436 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5437 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5438 5439 qlt_incr_num_pend_cmds(vha); 5440 INIT_LIST_HEAD(&cmd->cmd_list); 5441 memcpy(&cmd->atio, atio, sizeof(*atio)); 5442 5443 cmd->tgt = vha->vha_tgt.qla_tgt; 5444 cmd->vha = vha; 5445 cmd->reset_count = ha->base_qpair->chip_reset; 5446 cmd->q_full = 1; 5447 cmd->qpair = ha->base_qpair; 5448 cmd->se_cmd.map_cpu = cpu; 5449 5450 if (qfull) { 5451 cmd->q_full = 1; 5452 /* NOTE: borrowing the state field to carry the status */ 5453 cmd->state = status; 5454 } else 5455 cmd->term_exchg = 1; 5456 5457 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5458 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5459 5460 vha->hw->tgt.num_qfull_cmds_alloc++; 5461 if (vha->hw->tgt.num_qfull_cmds_alloc > 5462 vha->qla_stats.stat_max_qfull_cmds_alloc) 5463 vha->qla_stats.stat_max_qfull_cmds_alloc = 5464 vha->hw->tgt.num_qfull_cmds_alloc; 5465 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5466 } 5467 5468 int 5469 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5470 { 5471 struct scsi_qla_host *vha = qpair->vha; 5472 struct qla_hw_data *ha = vha->hw; 5473 unsigned long flags; 5474 struct qla_tgt_cmd *cmd, *tcmd; 5475 struct list_head free_list, q_full_list; 5476 int rc = 0; 5477 5478 if (list_empty(&ha->tgt.q_full_list)) 5479 return 0; 5480 5481 INIT_LIST_HEAD(&free_list); 5482 INIT_LIST_HEAD(&q_full_list); 5483 5484 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5485 if (list_empty(&ha->tgt.q_full_list)) { 5486 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5487 return 0; 5488 } 5489 5490 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5491 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5492 5493 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5494 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5495 if (cmd->q_full) 5496 /* cmd->state is a borrowed field to hold status */ 5497 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5498 else if (cmd->term_exchg) 5499 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5500 5501 if (rc == -ENOMEM) 5502 break; 5503 5504 if (cmd->q_full) 5505 ql_dbg(ql_dbg_io, vha, 0x3006, 5506 "%s: busy sent for ox_id[%04x]\n", __func__, 5507 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5508 else if (cmd->term_exchg) 5509 ql_dbg(ql_dbg_io, vha, 0x3007, 5510 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5511 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5512 else 5513 ql_dbg(ql_dbg_io, vha, 0x3008, 5514 "%s: Unexpected cmd in QFull list %p\n", __func__, 5515 cmd); 5516 5517 list_del(&cmd->cmd_list); 5518 list_add_tail(&cmd->cmd_list, &free_list); 5519 5520 /* piggy back on hardware_lock for protection */ 5521 vha->hw->tgt.num_qfull_cmds_alloc--; 5522 } 5523 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5524 5525 cmd = NULL; 5526 5527 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5528 list_del(&cmd->cmd_list); 5529 /* This cmd was never sent to TCM. There is no need 5530 * to schedule free or call free_cmd 5531 */ 5532 qlt_free_cmd(cmd); 5533 } 5534 5535 if (!list_empty(&q_full_list)) { 5536 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5537 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5538 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5539 } 5540 5541 return rc; 5542 } 5543 5544 static void 5545 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5546 uint16_t status) 5547 { 5548 int rc = 0; 5549 struct scsi_qla_host *vha = qpair->vha; 5550 5551 rc = __qlt_send_busy(qpair, atio, status); 5552 if (rc == -ENOMEM) 5553 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5554 } 5555 5556 static int 5557 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5558 struct atio_from_isp *atio, uint8_t ha_locked) 5559 { 5560 struct qla_hw_data *ha = vha->hw; 5561 unsigned long flags; 5562 5563 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5564 return 0; 5565 5566 if (!ha_locked) 5567 spin_lock_irqsave(&ha->hardware_lock, flags); 5568 qlt_send_busy(qpair, atio, qla_sam_status); 5569 if (!ha_locked) 5570 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5571 5572 return 1; 5573 } 5574 5575 /* ha->hardware_lock supposed to be held on entry */ 5576 /* called via callback from qla2xxx */ 5577 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5578 struct atio_from_isp *atio, uint8_t ha_locked) 5579 { 5580 struct qla_hw_data *ha = vha->hw; 5581 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5582 int rc; 5583 unsigned long flags = 0; 5584 5585 if (unlikely(tgt == NULL)) { 5586 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5587 "ATIO pkt, but no tgt (ha %p)", ha); 5588 return; 5589 } 5590 /* 5591 * In tgt_stop mode we also should allow all requests to pass. 5592 * Otherwise, some commands can stuck. 5593 */ 5594 5595 tgt->atio_irq_cmd_count++; 5596 5597 switch (atio->u.raw.entry_type) { 5598 case ATIO_TYPE7: 5599 if (unlikely(atio->u.isp24.exchange_addr == 5600 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5601 ql_dbg(ql_dbg_io, vha, 0x3065, 5602 "qla_target(%d): ATIO_TYPE7 " 5603 "received with UNKNOWN exchange address, " 5604 "sending QUEUE_FULL\n", vha->vp_idx); 5605 if (!ha_locked) 5606 spin_lock_irqsave(&ha->hardware_lock, flags); 5607 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5608 if (!ha_locked) 5609 spin_unlock_irqrestore(&ha->hardware_lock, 5610 flags); 5611 break; 5612 } 5613 5614 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5615 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5616 atio, ha_locked); 5617 if (rc != 0) { 5618 tgt->atio_irq_cmd_count--; 5619 return; 5620 } 5621 rc = qlt_handle_cmd_for_atio(vha, atio); 5622 } else { 5623 rc = qlt_handle_task_mgmt(vha, atio); 5624 } 5625 if (unlikely(rc != 0)) { 5626 if (!ha_locked) 5627 spin_lock_irqsave(&ha->hardware_lock, flags); 5628 switch (rc) { 5629 case -ENODEV: 5630 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5631 "qla_target: Unable to send command to target\n"); 5632 break; 5633 case -EBADF: 5634 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5635 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5636 qlt_send_term_exchange(ha->base_qpair, NULL, 5637 atio, 1, 0); 5638 break; 5639 case -EBUSY: 5640 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5641 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5642 vha->vp_idx); 5643 qlt_send_busy(ha->base_qpair, atio, 5644 tc_sam_status); 5645 break; 5646 default: 5647 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5648 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5649 vha->vp_idx); 5650 qlt_send_busy(ha->base_qpair, atio, 5651 qla_sam_status); 5652 break; 5653 } 5654 if (!ha_locked) 5655 spin_unlock_irqrestore(&ha->hardware_lock, 5656 flags); 5657 } 5658 break; 5659 5660 case IMMED_NOTIFY_TYPE: 5661 { 5662 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5663 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5664 "qla_target(%d): Received ATIO packet %x " 5665 "with error status %x\n", vha->vp_idx, 5666 atio->u.raw.entry_type, 5667 atio->u.isp2x.entry_status); 5668 break; 5669 } 5670 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5671 5672 if (!ha_locked) 5673 spin_lock_irqsave(&ha->hardware_lock, flags); 5674 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5675 if (!ha_locked) 5676 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5677 break; 5678 } 5679 5680 default: 5681 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5682 "qla_target(%d): Received unknown ATIO atio " 5683 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5684 break; 5685 } 5686 5687 tgt->atio_irq_cmd_count--; 5688 } 5689 5690 /* 5691 * qpair lock is assume to be held 5692 * rc = 0 : send terminate & abts respond 5693 * rc != 0: do not send term & abts respond 5694 */ 5695 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5696 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5697 { 5698 struct qla_hw_data *ha = vha->hw; 5699 int rc = 0; 5700 5701 /* 5702 * Detect unresolved exchange. If the same ABTS is unable 5703 * to terminate an existing command and the same ABTS loops 5704 * between FW & Driver, then force FW dump. Under 1 jiff, 5705 * we should see multiple loops. 5706 */ 5707 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5708 qpair->retry_term_jiff == jiffies) { 5709 /* found existing exchange */ 5710 qpair->retry_term_cnt++; 5711 if (qpair->retry_term_cnt >= 5) { 5712 rc = EIO; 5713 qpair->retry_term_cnt = 0; 5714 ql_log(ql_log_warn, vha, 0xffff, 5715 "Unable to send ABTS Respond. Dumping firmware.\n"); 5716 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5717 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5718 5719 if (qpair == ha->base_qpair) 5720 ha->isp_ops->fw_dump(vha, 1); 5721 else 5722 ha->isp_ops->fw_dump(vha, 0); 5723 5724 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5725 qla2xxx_wake_dpc(vha); 5726 } 5727 } else if (qpair->retry_term_jiff != jiffies) { 5728 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5729 qpair->retry_term_cnt = 0; 5730 qpair->retry_term_jiff = jiffies; 5731 } 5732 5733 return rc; 5734 } 5735 5736 5737 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5738 struct rsp_que *rsp, response_t *pkt) 5739 { 5740 struct abts_resp_from_24xx_fw *entry = 5741 (struct abts_resp_from_24xx_fw *)pkt; 5742 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5743 struct qla_tgt_mgmt_cmd *mcmd; 5744 struct qla_hw_data *ha = vha->hw; 5745 5746 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5747 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5748 ql_dbg(ql_dbg_async, vha, 0xe064, 5749 "qla_target(%d): ABTS Comp without mcmd\n", 5750 vha->vp_idx); 5751 return; 5752 } 5753 5754 if (mcmd) 5755 vha = mcmd->vha; 5756 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5757 5758 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5759 "ABTS_RESP_24XX: compl_status %x\n", 5760 entry->compl_status); 5761 5762 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5763 if ((entry->error_subcode1 == 0x1E) && 5764 (entry->error_subcode2 == 0)) { 5765 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5766 ha->tgt.tgt_ops->free_mcmd(mcmd); 5767 return; 5768 } 5769 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5770 pkt, mcmd); 5771 } else { 5772 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5773 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5774 vha->vp_idx, entry->compl_status, 5775 entry->error_subcode1, 5776 entry->error_subcode2); 5777 ha->tgt.tgt_ops->free_mcmd(mcmd); 5778 } 5779 } else { 5780 ha->tgt.tgt_ops->free_mcmd(mcmd); 5781 } 5782 } 5783 5784 /* ha->hardware_lock supposed to be held on entry */ 5785 /* called via callback from qla2xxx */ 5786 static void qlt_response_pkt(struct scsi_qla_host *vha, 5787 struct rsp_que *rsp, response_t *pkt) 5788 { 5789 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5790 5791 if (unlikely(tgt == NULL)) { 5792 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5793 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5794 vha->vp_idx, pkt->entry_type, vha->hw); 5795 return; 5796 } 5797 5798 /* 5799 * In tgt_stop mode we also should allow all requests to pass. 5800 * Otherwise, some commands can stuck. 5801 */ 5802 5803 switch (pkt->entry_type) { 5804 case CTIO_CRC2: 5805 case CTIO_TYPE7: 5806 { 5807 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5808 5809 qlt_do_ctio_completion(vha, rsp, entry->handle, 5810 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5811 entry); 5812 break; 5813 } 5814 5815 case ACCEPT_TGT_IO_TYPE: 5816 { 5817 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5818 int rc; 5819 5820 if (atio->u.isp2x.status != 5821 cpu_to_le16(ATIO_CDB_VALID)) { 5822 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5823 "qla_target(%d): ATIO with error " 5824 "status %x received\n", vha->vp_idx, 5825 le16_to_cpu(atio->u.isp2x.status)); 5826 break; 5827 } 5828 5829 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5830 if (rc != 0) 5831 return; 5832 5833 rc = qlt_handle_cmd_for_atio(vha, atio); 5834 if (unlikely(rc != 0)) { 5835 switch (rc) { 5836 case -ENODEV: 5837 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5838 "qla_target: Unable to send command to target\n"); 5839 break; 5840 case -EBADF: 5841 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5842 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5843 qlt_send_term_exchange(rsp->qpair, NULL, 5844 atio, 1, 0); 5845 break; 5846 case -EBUSY: 5847 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5848 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5849 vha->vp_idx); 5850 qlt_send_busy(rsp->qpair, atio, 5851 tc_sam_status); 5852 break; 5853 default: 5854 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5855 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5856 vha->vp_idx); 5857 qlt_send_busy(rsp->qpair, atio, 5858 qla_sam_status); 5859 break; 5860 } 5861 } 5862 } 5863 break; 5864 5865 case CONTINUE_TGT_IO_TYPE: 5866 { 5867 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5868 5869 qlt_do_ctio_completion(vha, rsp, entry->handle, 5870 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5871 entry); 5872 break; 5873 } 5874 5875 case CTIO_A64_TYPE: 5876 { 5877 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5878 5879 qlt_do_ctio_completion(vha, rsp, entry->handle, 5880 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5881 entry); 5882 break; 5883 } 5884 5885 case IMMED_NOTIFY_TYPE: 5886 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5887 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5888 break; 5889 5890 case NOTIFY_ACK_TYPE: 5891 if (tgt->notify_ack_expected > 0) { 5892 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5893 5894 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5895 "NOTIFY_ACK seq %08x status %x\n", 5896 le16_to_cpu(entry->u.isp2x.seq_id), 5897 le16_to_cpu(entry->u.isp2x.status)); 5898 tgt->notify_ack_expected--; 5899 if (entry->u.isp2x.status != 5900 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5901 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5902 "qla_target(%d): NOTIFY_ACK " 5903 "failed %x\n", vha->vp_idx, 5904 le16_to_cpu(entry->u.isp2x.status)); 5905 } 5906 } else { 5907 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5908 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5909 vha->vp_idx); 5910 } 5911 break; 5912 5913 case ABTS_RECV_24XX: 5914 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5915 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5916 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5917 break; 5918 5919 case ABTS_RESP_24XX: 5920 if (tgt->abts_resp_expected > 0) { 5921 qlt_handle_abts_completion(vha, rsp, pkt); 5922 } else { 5923 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5924 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5925 "received\n", vha->vp_idx); 5926 } 5927 break; 5928 5929 default: 5930 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5931 "qla_target(%d): Received unknown response pkt " 5932 "type %x\n", vha->vp_idx, pkt->entry_type); 5933 break; 5934 } 5935 5936 } 5937 5938 /* 5939 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5940 */ 5941 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5942 uint16_t *mailbox) 5943 { 5944 struct qla_hw_data *ha = vha->hw; 5945 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5946 int login_code; 5947 5948 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5949 return; 5950 5951 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5952 IS_QLA2100(ha)) 5953 return; 5954 /* 5955 * In tgt_stop mode we also should allow all requests to pass. 5956 * Otherwise, some commands can stuck. 5957 */ 5958 5959 5960 switch (code) { 5961 case MBA_RESET: /* Reset */ 5962 case MBA_SYSTEM_ERR: /* System Error */ 5963 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5964 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5965 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5966 "qla_target(%d): System error async event %#x " 5967 "occurred", vha->vp_idx, code); 5968 break; 5969 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5970 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5971 break; 5972 5973 case MBA_LOOP_UP: 5974 { 5975 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5976 "qla_target(%d): Async LOOP_UP occurred " 5977 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5978 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5979 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5980 if (tgt->link_reinit_iocb_pending) { 5981 qlt_send_notify_ack(ha->base_qpair, 5982 (void *)&tgt->link_reinit_iocb, 5983 0, 0, 0, 0, 0, 0); 5984 tgt->link_reinit_iocb_pending = 0; 5985 } 5986 break; 5987 } 5988 5989 case MBA_LIP_OCCURRED: 5990 case MBA_LOOP_DOWN: 5991 case MBA_LIP_RESET: 5992 case MBA_RSCN_UPDATE: 5993 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5994 "qla_target(%d): Async event %#x occurred " 5995 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5996 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5997 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5998 break; 5999 6000 case MBA_REJECTED_FCP_CMD: 6001 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6002 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6003 vha->vp_idx, 6004 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6005 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6006 6007 if (le16_to_cpu(mailbox[3]) == 1) { 6008 /* exchange starvation. */ 6009 vha->hw->exch_starvation++; 6010 if (vha->hw->exch_starvation > 5) { 6011 ql_log(ql_log_warn, vha, 0xd03a, 6012 "Exchange starvation-. Resetting RISC\n"); 6013 6014 vha->hw->exch_starvation = 0; 6015 if (IS_P3P_TYPE(vha->hw)) 6016 set_bit(FCOE_CTX_RESET_NEEDED, 6017 &vha->dpc_flags); 6018 else 6019 set_bit(ISP_ABORT_NEEDED, 6020 &vha->dpc_flags); 6021 qla2xxx_wake_dpc(vha); 6022 } 6023 } 6024 break; 6025 6026 case MBA_PORT_UPDATE: 6027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6028 "qla_target(%d): Port update async event %#x " 6029 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6030 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6031 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6032 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6033 6034 login_code = le16_to_cpu(mailbox[2]); 6035 if (login_code == 0x4) { 6036 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6037 "Async MB 2: Got PLOGI Complete\n"); 6038 vha->hw->exch_starvation = 0; 6039 } else if (login_code == 0x7) 6040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6041 "Async MB 2: Port Logged Out\n"); 6042 break; 6043 default: 6044 break; 6045 } 6046 6047 } 6048 6049 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6050 uint16_t loop_id) 6051 { 6052 fc_port_t *fcport, *tfcp, *del; 6053 int rc; 6054 unsigned long flags; 6055 u8 newfcport = 0; 6056 6057 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6058 if (!fcport) { 6059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6060 "qla_target(%d): Allocation of tmp FC port failed", 6061 vha->vp_idx); 6062 return NULL; 6063 } 6064 6065 fcport->loop_id = loop_id; 6066 6067 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6068 if (rc != QLA_SUCCESS) { 6069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6070 "qla_target(%d): Failed to retrieve fcport " 6071 "information -- get_port_database() returned %x " 6072 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6073 kfree(fcport); 6074 return NULL; 6075 } 6076 6077 del = NULL; 6078 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6079 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6080 6081 if (tfcp) { 6082 tfcp->d_id = fcport->d_id; 6083 tfcp->port_type = fcport->port_type; 6084 tfcp->supported_classes = fcport->supported_classes; 6085 tfcp->flags |= fcport->flags; 6086 tfcp->scan_state = QLA_FCPORT_FOUND; 6087 6088 del = fcport; 6089 fcport = tfcp; 6090 } else { 6091 if (vha->hw->current_topology == ISP_CFG_F) 6092 fcport->flags |= FCF_FABRIC_DEVICE; 6093 6094 list_add_tail(&fcport->list, &vha->vp_fcports); 6095 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6096 vha->fcport_count++; 6097 fcport->login_gen++; 6098 fcport->disc_state = DSC_LOGIN_COMPLETE; 6099 fcport->login_succ = 1; 6100 newfcport = 1; 6101 } 6102 6103 fcport->deleted = 0; 6104 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6105 6106 switch (vha->host->active_mode) { 6107 case MODE_INITIATOR: 6108 case MODE_DUAL: 6109 if (newfcport) { 6110 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6111 qla24xx_sched_upd_fcport(fcport); 6112 } else { 6113 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6114 "%s %d %8phC post gpsc fcp_cnt %d\n", 6115 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6116 qla24xx_post_gpsc_work(vha, fcport); 6117 } 6118 } 6119 break; 6120 6121 case MODE_TARGET: 6122 default: 6123 break; 6124 } 6125 if (del) 6126 qla2x00_free_fcport(del); 6127 6128 return fcport; 6129 } 6130 6131 /* Must be called under tgt_mutex */ 6132 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6133 uint8_t *s_id) 6134 { 6135 struct fc_port *sess = NULL; 6136 fc_port_t *fcport = NULL; 6137 int rc, global_resets; 6138 uint16_t loop_id = 0; 6139 6140 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 6141 /* 6142 * This is Domain Controller, so it should be 6143 * OK to drop SCSI commands from it. 6144 */ 6145 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6146 "Unable to find initiator with S_ID %x:%x:%x", 6147 s_id[0], s_id[1], s_id[2]); 6148 return NULL; 6149 } 6150 6151 mutex_lock(&vha->vha_tgt.tgt_mutex); 6152 6153 retry: 6154 global_resets = 6155 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6156 6157 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6158 if (rc != 0) { 6159 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6160 6161 ql_log(ql_log_info, vha, 0xf071, 6162 "qla_target(%d): Unable to find " 6163 "initiator with S_ID %x:%x:%x", 6164 vha->vp_idx, s_id[0], s_id[1], 6165 s_id[2]); 6166 6167 if (rc == -ENOENT) { 6168 qlt_port_logo_t logo; 6169 6170 sid_to_portid(s_id, &logo.id); 6171 logo.cmd_count = 1; 6172 qlt_send_first_logo(vha, &logo); 6173 } 6174 6175 return NULL; 6176 } 6177 6178 fcport = qlt_get_port_database(vha, loop_id); 6179 if (!fcport) { 6180 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6181 return NULL; 6182 } 6183 6184 if (global_resets != 6185 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6187 "qla_target(%d): global reset during session discovery " 6188 "(counter was %d, new %d), retrying", vha->vp_idx, 6189 global_resets, 6190 atomic_read(&vha->vha_tgt. 6191 qla_tgt->tgt_global_resets_count)); 6192 goto retry; 6193 } 6194 6195 sess = qlt_create_sess(vha, fcport, true); 6196 6197 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6198 6199 return sess; 6200 } 6201 6202 static void qlt_abort_work(struct qla_tgt *tgt, 6203 struct qla_tgt_sess_work_param *prm) 6204 { 6205 struct scsi_qla_host *vha = tgt->vha; 6206 struct qla_hw_data *ha = vha->hw; 6207 struct fc_port *sess = NULL; 6208 unsigned long flags = 0, flags2 = 0; 6209 uint32_t be_s_id; 6210 uint8_t s_id[3]; 6211 int rc; 6212 6213 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6214 6215 if (tgt->tgt_stop) 6216 goto out_term2; 6217 6218 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 6219 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 6220 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 6221 6222 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 6223 (unsigned char *)&be_s_id); 6224 if (!sess) { 6225 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6226 6227 sess = qlt_make_local_sess(vha, s_id); 6228 /* sess has got an extra creation ref */ 6229 6230 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6231 if (!sess) 6232 goto out_term2; 6233 } else { 6234 if (sess->deleted) { 6235 sess = NULL; 6236 goto out_term2; 6237 } 6238 6239 if (!kref_get_unless_zero(&sess->sess_kref)) { 6240 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6241 "%s: kref_get fail %8phC \n", 6242 __func__, sess->port_name); 6243 sess = NULL; 6244 goto out_term2; 6245 } 6246 } 6247 6248 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6249 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6250 6251 ha->tgt.tgt_ops->put_sess(sess); 6252 6253 if (rc != 0) 6254 goto out_term; 6255 return; 6256 6257 out_term2: 6258 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6259 6260 if (sess) 6261 ha->tgt.tgt_ops->put_sess(sess); 6262 6263 out_term: 6264 spin_lock_irqsave(&ha->hardware_lock, flags); 6265 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6266 FCP_TMF_REJECTED, false); 6267 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6268 } 6269 6270 static void qlt_tmr_work(struct qla_tgt *tgt, 6271 struct qla_tgt_sess_work_param *prm) 6272 { 6273 struct atio_from_isp *a = &prm->tm_iocb2; 6274 struct scsi_qla_host *vha = tgt->vha; 6275 struct qla_hw_data *ha = vha->hw; 6276 struct fc_port *sess; 6277 unsigned long flags; 6278 uint8_t *s_id = NULL; /* to hide compiler warnings */ 6279 int rc; 6280 u64 unpacked_lun; 6281 int fn; 6282 void *iocb; 6283 6284 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6285 6286 if (tgt->tgt_stop) 6287 goto out_term2; 6288 6289 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6290 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6291 if (!sess) { 6292 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6293 6294 sess = qlt_make_local_sess(vha, s_id); 6295 /* sess has got an extra creation ref */ 6296 6297 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6298 if (!sess) 6299 goto out_term2; 6300 } else { 6301 if (sess->deleted) { 6302 goto out_term2; 6303 } 6304 6305 if (!kref_get_unless_zero(&sess->sess_kref)) { 6306 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6307 "%s: kref_get fail %8phC\n", 6308 __func__, sess->port_name); 6309 goto out_term2; 6310 } 6311 } 6312 6313 iocb = a; 6314 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6315 unpacked_lun = 6316 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6317 6318 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6319 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6320 6321 ha->tgt.tgt_ops->put_sess(sess); 6322 6323 if (rc != 0) 6324 goto out_term; 6325 return; 6326 6327 out_term2: 6328 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6329 out_term: 6330 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6331 } 6332 6333 static void qlt_sess_work_fn(struct work_struct *work) 6334 { 6335 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6336 struct scsi_qla_host *vha = tgt->vha; 6337 unsigned long flags; 6338 6339 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6340 6341 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6342 while (!list_empty(&tgt->sess_works_list)) { 6343 struct qla_tgt_sess_work_param *prm = list_entry( 6344 tgt->sess_works_list.next, typeof(*prm), 6345 sess_works_list_entry); 6346 6347 /* 6348 * This work can be scheduled on several CPUs at time, so we 6349 * must delete the entry to eliminate double processing 6350 */ 6351 list_del(&prm->sess_works_list_entry); 6352 6353 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6354 6355 switch (prm->type) { 6356 case QLA_TGT_SESS_WORK_ABORT: 6357 qlt_abort_work(tgt, prm); 6358 break; 6359 case QLA_TGT_SESS_WORK_TM: 6360 qlt_tmr_work(tgt, prm); 6361 break; 6362 default: 6363 BUG_ON(1); 6364 break; 6365 } 6366 6367 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6368 6369 kfree(prm); 6370 } 6371 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6372 } 6373 6374 /* Must be called under tgt_host_action_mutex */ 6375 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6376 { 6377 struct qla_tgt *tgt; 6378 int rc, i; 6379 struct qla_qpair_hint *h; 6380 6381 if (!QLA_TGT_MODE_ENABLED()) 6382 return 0; 6383 6384 if (!IS_TGT_MODE_CAPABLE(ha)) { 6385 ql_log(ql_log_warn, base_vha, 0xe070, 6386 "This adapter does not support target mode.\n"); 6387 return 0; 6388 } 6389 6390 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6391 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6392 6393 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6394 6395 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6396 if (!tgt) { 6397 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6398 "Unable to allocate struct qla_tgt\n"); 6399 return -ENOMEM; 6400 } 6401 6402 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6403 sizeof(struct qla_qpair_hint), 6404 GFP_KERNEL); 6405 if (!tgt->qphints) { 6406 kfree(tgt); 6407 ql_log(ql_log_warn, base_vha, 0x0197, 6408 "Unable to allocate qpair hints.\n"); 6409 return -ENOMEM; 6410 } 6411 6412 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6413 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6414 6415 rc = btree_init64(&tgt->lun_qpair_map); 6416 if (rc) { 6417 kfree(tgt->qphints); 6418 kfree(tgt); 6419 ql_log(ql_log_info, base_vha, 0x0198, 6420 "Unable to initialize lun_qpair_map btree\n"); 6421 return -EIO; 6422 } 6423 h = &tgt->qphints[0]; 6424 h->qpair = ha->base_qpair; 6425 INIT_LIST_HEAD(&h->hint_elem); 6426 h->cpuid = ha->base_qpair->cpuid; 6427 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6428 6429 for (i = 0; i < ha->max_qpairs; i++) { 6430 unsigned long flags; 6431 6432 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6433 6434 h = &tgt->qphints[i + 1]; 6435 INIT_LIST_HEAD(&h->hint_elem); 6436 if (qpair) { 6437 h->qpair = qpair; 6438 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6439 list_add_tail(&h->hint_elem, &qpair->hints_list); 6440 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6441 h->cpuid = qpair->cpuid; 6442 } 6443 } 6444 6445 tgt->ha = ha; 6446 tgt->vha = base_vha; 6447 init_waitqueue_head(&tgt->waitQ); 6448 INIT_LIST_HEAD(&tgt->del_sess_list); 6449 spin_lock_init(&tgt->sess_work_lock); 6450 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6451 INIT_LIST_HEAD(&tgt->sess_works_list); 6452 atomic_set(&tgt->tgt_global_resets_count, 0); 6453 6454 base_vha->vha_tgt.qla_tgt = tgt; 6455 6456 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6457 "qla_target(%d): using 64 Bit PCI addressing", 6458 base_vha->vp_idx); 6459 /* 3 is reserved */ 6460 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6461 6462 mutex_lock(&qla_tgt_mutex); 6463 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6464 mutex_unlock(&qla_tgt_mutex); 6465 6466 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6467 ha->tgt.tgt_ops->add_target(base_vha); 6468 6469 return 0; 6470 } 6471 6472 /* Must be called under tgt_host_action_mutex */ 6473 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6474 { 6475 if (!vha->vha_tgt.qla_tgt) 6476 return 0; 6477 6478 if (vha->fc_vport) { 6479 qlt_release(vha->vha_tgt.qla_tgt); 6480 return 0; 6481 } 6482 6483 /* free left over qfull cmds */ 6484 qlt_init_term_exchange(vha); 6485 6486 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6487 vha->host_no, ha); 6488 qlt_release(vha->vha_tgt.qla_tgt); 6489 6490 return 0; 6491 } 6492 6493 void qlt_remove_target_resources(struct qla_hw_data *ha) 6494 { 6495 struct scsi_qla_host *node; 6496 u32 key = 0; 6497 6498 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6499 btree_remove32(&ha->tgt.host_map, key); 6500 6501 btree_destroy32(&ha->tgt.host_map); 6502 } 6503 6504 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6505 unsigned char *b) 6506 { 6507 int i; 6508 6509 pr_debug("qla2xxx HW vha->node_name: "); 6510 for (i = 0; i < WWN_SIZE; i++) 6511 pr_debug("%02x ", vha->node_name[i]); 6512 pr_debug("\n"); 6513 pr_debug("qla2xxx HW vha->port_name: "); 6514 for (i = 0; i < WWN_SIZE; i++) 6515 pr_debug("%02x ", vha->port_name[i]); 6516 pr_debug("\n"); 6517 6518 pr_debug("qla2xxx passed configfs WWPN: "); 6519 put_unaligned_be64(wwpn, b); 6520 for (i = 0; i < WWN_SIZE; i++) 6521 pr_debug("%02x ", b[i]); 6522 pr_debug("\n"); 6523 } 6524 6525 /** 6526 * qla_tgt_lport_register - register lport with external module 6527 * 6528 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6529 * @phys_wwpn: physical port WWPN 6530 * @npiv_wwpn: NPIV WWPN 6531 * @npiv_wwnn: NPIV WWNN 6532 * @callback: lport initialization callback for tcm_qla2xxx code 6533 */ 6534 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6535 u64 npiv_wwpn, u64 npiv_wwnn, 6536 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6537 { 6538 struct qla_tgt *tgt; 6539 struct scsi_qla_host *vha; 6540 struct qla_hw_data *ha; 6541 struct Scsi_Host *host; 6542 unsigned long flags; 6543 int rc; 6544 u8 b[WWN_SIZE]; 6545 6546 mutex_lock(&qla_tgt_mutex); 6547 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6548 vha = tgt->vha; 6549 ha = vha->hw; 6550 6551 host = vha->host; 6552 if (!host) 6553 continue; 6554 6555 if (!(host->hostt->supported_mode & MODE_TARGET)) 6556 continue; 6557 6558 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6559 continue; 6560 6561 spin_lock_irqsave(&ha->hardware_lock, flags); 6562 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6563 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6564 host->host_no); 6565 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6566 continue; 6567 } 6568 if (tgt->tgt_stop) { 6569 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6570 host->host_no); 6571 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6572 continue; 6573 } 6574 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6575 6576 if (!scsi_host_get(host)) { 6577 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6578 "Unable to scsi_host_get() for" 6579 " qla2xxx scsi_host\n"); 6580 continue; 6581 } 6582 qlt_lport_dump(vha, phys_wwpn, b); 6583 6584 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6585 scsi_host_put(host); 6586 continue; 6587 } 6588 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6589 if (rc != 0) 6590 scsi_host_put(host); 6591 6592 mutex_unlock(&qla_tgt_mutex); 6593 return rc; 6594 } 6595 mutex_unlock(&qla_tgt_mutex); 6596 6597 return -ENODEV; 6598 } 6599 EXPORT_SYMBOL(qlt_lport_register); 6600 6601 /** 6602 * qla_tgt_lport_deregister - Degister lport 6603 * 6604 * @vha: Registered scsi_qla_host pointer 6605 */ 6606 void qlt_lport_deregister(struct scsi_qla_host *vha) 6607 { 6608 struct qla_hw_data *ha = vha->hw; 6609 struct Scsi_Host *sh = vha->host; 6610 /* 6611 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6612 */ 6613 vha->vha_tgt.target_lport_ptr = NULL; 6614 ha->tgt.tgt_ops = NULL; 6615 /* 6616 * Release the Scsi_Host reference for the underlying qla2xxx host 6617 */ 6618 scsi_host_put(sh); 6619 } 6620 EXPORT_SYMBOL(qlt_lport_deregister); 6621 6622 /* Must be called under HW lock */ 6623 void qlt_set_mode(struct scsi_qla_host *vha) 6624 { 6625 switch (vha->qlini_mode) { 6626 case QLA2XXX_INI_MODE_DISABLED: 6627 case QLA2XXX_INI_MODE_EXCLUSIVE: 6628 vha->host->active_mode = MODE_TARGET; 6629 break; 6630 case QLA2XXX_INI_MODE_ENABLED: 6631 vha->host->active_mode = MODE_INITIATOR; 6632 break; 6633 case QLA2XXX_INI_MODE_DUAL: 6634 vha->host->active_mode = MODE_DUAL; 6635 break; 6636 default: 6637 break; 6638 } 6639 } 6640 6641 /* Must be called under HW lock */ 6642 static void qlt_clear_mode(struct scsi_qla_host *vha) 6643 { 6644 switch (vha->qlini_mode) { 6645 case QLA2XXX_INI_MODE_DISABLED: 6646 vha->host->active_mode = MODE_UNKNOWN; 6647 break; 6648 case QLA2XXX_INI_MODE_EXCLUSIVE: 6649 vha->host->active_mode = MODE_INITIATOR; 6650 break; 6651 case QLA2XXX_INI_MODE_ENABLED: 6652 case QLA2XXX_INI_MODE_DUAL: 6653 vha->host->active_mode = MODE_INITIATOR; 6654 break; 6655 default: 6656 break; 6657 } 6658 } 6659 6660 /* 6661 * qla_tgt_enable_vha - NO LOCK HELD 6662 * 6663 * host_reset, bring up w/ Target Mode Enabled 6664 */ 6665 void 6666 qlt_enable_vha(struct scsi_qla_host *vha) 6667 { 6668 struct qla_hw_data *ha = vha->hw; 6669 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6670 unsigned long flags; 6671 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6672 6673 if (!tgt) { 6674 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6675 "Unable to locate qla_tgt pointer from" 6676 " struct qla_hw_data\n"); 6677 dump_stack(); 6678 return; 6679 } 6680 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6681 return; 6682 6683 spin_lock_irqsave(&ha->hardware_lock, flags); 6684 tgt->tgt_stopped = 0; 6685 qlt_set_mode(vha); 6686 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6687 6688 mutex_lock(&ha->optrom_mutex); 6689 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6690 "%s.\n", __func__); 6691 if (vha->vp_idx) { 6692 qla24xx_disable_vp(vha); 6693 qla24xx_enable_vp(vha); 6694 } else { 6695 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6696 qla2xxx_wake_dpc(base_vha); 6697 qla2x00_wait_for_hba_online(base_vha); 6698 } 6699 mutex_unlock(&ha->optrom_mutex); 6700 } 6701 EXPORT_SYMBOL(qlt_enable_vha); 6702 6703 /* 6704 * qla_tgt_disable_vha - NO LOCK HELD 6705 * 6706 * Disable Target Mode and reset the adapter 6707 */ 6708 static void qlt_disable_vha(struct scsi_qla_host *vha) 6709 { 6710 struct qla_hw_data *ha = vha->hw; 6711 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6712 unsigned long flags; 6713 6714 if (!tgt) { 6715 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6716 "Unable to locate qla_tgt pointer from" 6717 " struct qla_hw_data\n"); 6718 dump_stack(); 6719 return; 6720 } 6721 6722 spin_lock_irqsave(&ha->hardware_lock, flags); 6723 qlt_clear_mode(vha); 6724 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6725 6726 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6727 qla2xxx_wake_dpc(vha); 6728 qla2x00_wait_for_hba_online(vha); 6729 } 6730 6731 /* 6732 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6733 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6734 * members. 6735 */ 6736 void 6737 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6738 { 6739 vha->vha_tgt.qla_tgt = NULL; 6740 6741 mutex_init(&vha->vha_tgt.tgt_mutex); 6742 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6743 6744 qlt_clear_mode(vha); 6745 6746 /* 6747 * NOTE: Currently the value is kept the same for <24xx and 6748 * >=24xx ISPs. If it is necessary to change it, 6749 * the check should be added for specific ISPs, 6750 * assigning the value appropriately. 6751 */ 6752 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6753 6754 qlt_add_target(ha, vha); 6755 } 6756 6757 u8 6758 qlt_rff_id(struct scsi_qla_host *vha) 6759 { 6760 u8 fc4_feature = 0; 6761 /* 6762 * FC-4 Feature bit 0 indicates target functionality to the name server. 6763 */ 6764 if (qla_tgt_mode_enabled(vha)) { 6765 fc4_feature = BIT_0; 6766 } else if (qla_ini_mode_enabled(vha)) { 6767 fc4_feature = BIT_1; 6768 } else if (qla_dual_mode_enabled(vha)) 6769 fc4_feature = BIT_0 | BIT_1; 6770 6771 return fc4_feature; 6772 } 6773 6774 /* 6775 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6776 * @ha: HA context 6777 * 6778 * Beginning of ATIO ring has initialization control block already built 6779 * by nvram config routine. 6780 * 6781 * Returns 0 on success. 6782 */ 6783 void 6784 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6785 { 6786 struct qla_hw_data *ha = vha->hw; 6787 uint16_t cnt; 6788 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6789 6790 if (qla_ini_mode_enabled(vha)) 6791 return; 6792 6793 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6794 pkt->u.raw.signature = ATIO_PROCESSED; 6795 pkt++; 6796 } 6797 6798 } 6799 6800 /* 6801 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6802 * @ha: SCSI driver HA context 6803 */ 6804 void 6805 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6806 { 6807 struct qla_hw_data *ha = vha->hw; 6808 struct atio_from_isp *pkt; 6809 int cnt, i; 6810 6811 if (!ha->flags.fw_started) 6812 return; 6813 6814 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6815 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6816 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6817 cnt = pkt->u.raw.entry_count; 6818 6819 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6820 /* 6821 * This packet is corrupted. The header + payload 6822 * can not be trusted. There is no point in passing 6823 * it further up. 6824 */ 6825 ql_log(ql_log_warn, vha, 0xd03c, 6826 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6827 pkt->u.isp24.fcp_hdr.s_id, 6828 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6829 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6830 6831 adjust_corrupted_atio(pkt); 6832 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6833 ha_locked, 0); 6834 } else { 6835 qlt_24xx_atio_pkt_all_vps(vha, 6836 (struct atio_from_isp *)pkt, ha_locked); 6837 } 6838 6839 for (i = 0; i < cnt; i++) { 6840 ha->tgt.atio_ring_index++; 6841 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6842 ha->tgt.atio_ring_index = 0; 6843 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6844 } else 6845 ha->tgt.atio_ring_ptr++; 6846 6847 pkt->u.raw.signature = ATIO_PROCESSED; 6848 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6849 } 6850 wmb(); 6851 } 6852 6853 /* Adjust ring index */ 6854 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6855 } 6856 6857 void 6858 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6859 { 6860 struct qla_hw_data *ha = vha->hw; 6861 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6862 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6863 6864 if (!QLA_TGT_MODE_ENABLED()) 6865 return; 6866 6867 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6868 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6869 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6870 6871 if (ha->flags.msix_enabled) { 6872 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6873 if (IS_QLA2071(ha)) { 6874 /* 4 ports Baker: Enable Interrupt Handshake */ 6875 icb->msix_atio = 0; 6876 icb->firmware_options_2 |= BIT_26; 6877 } else { 6878 icb->msix_atio = cpu_to_le16(msix->entry); 6879 icb->firmware_options_2 &= ~BIT_26; 6880 } 6881 ql_dbg(ql_dbg_init, vha, 0xf072, 6882 "Registering ICB vector 0x%x for atio que.\n", 6883 msix->entry); 6884 } 6885 } else { 6886 /* INTx|MSI */ 6887 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6888 icb->msix_atio = 0; 6889 icb->firmware_options_2 |= BIT_26; 6890 ql_dbg(ql_dbg_init, vha, 0xf072, 6891 "%s: Use INTx for ATIOQ.\n", __func__); 6892 } 6893 } 6894 } 6895 6896 void 6897 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6898 { 6899 struct qla_hw_data *ha = vha->hw; 6900 u32 tmp; 6901 6902 if (!QLA_TGT_MODE_ENABLED()) 6903 return; 6904 6905 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6906 if (!ha->tgt.saved_set) { 6907 /* We save only once */ 6908 ha->tgt.saved_exchange_count = nv->exchange_count; 6909 ha->tgt.saved_firmware_options_1 = 6910 nv->firmware_options_1; 6911 ha->tgt.saved_firmware_options_2 = 6912 nv->firmware_options_2; 6913 ha->tgt.saved_firmware_options_3 = 6914 nv->firmware_options_3; 6915 ha->tgt.saved_set = 1; 6916 } 6917 6918 if (qla_tgt_mode_enabled(vha)) 6919 nv->exchange_count = cpu_to_le16(0xFFFF); 6920 else /* dual */ 6921 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6922 6923 /* Enable target mode */ 6924 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6925 6926 /* Disable ini mode, if requested */ 6927 if (qla_tgt_mode_enabled(vha)) 6928 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6929 6930 /* Disable Full Login after LIP */ 6931 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6932 /* Enable initial LIP */ 6933 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6934 if (ql2xtgt_tape_enable) 6935 /* Enable FC Tape support */ 6936 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6937 else 6938 /* Disable FC Tape support */ 6939 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6940 6941 /* Disable Full Login after LIP */ 6942 nv->host_p &= cpu_to_le32(~BIT_10); 6943 6944 /* 6945 * clear BIT 15 explicitly as we have seen at least 6946 * a couple of instances where this was set and this 6947 * was causing the firmware to not be initialized. 6948 */ 6949 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6950 /* Enable target PRLI control */ 6951 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6952 6953 if (IS_QLA25XX(ha)) { 6954 /* Change Loop-prefer to Pt-Pt */ 6955 tmp = ~(BIT_4|BIT_5|BIT_6); 6956 nv->firmware_options_2 &= cpu_to_le32(tmp); 6957 tmp = P2P << 4; 6958 nv->firmware_options_2 |= cpu_to_le32(tmp); 6959 } 6960 } else { 6961 if (ha->tgt.saved_set) { 6962 nv->exchange_count = ha->tgt.saved_exchange_count; 6963 nv->firmware_options_1 = 6964 ha->tgt.saved_firmware_options_1; 6965 nv->firmware_options_2 = 6966 ha->tgt.saved_firmware_options_2; 6967 nv->firmware_options_3 = 6968 ha->tgt.saved_firmware_options_3; 6969 } 6970 return; 6971 } 6972 6973 if (ha->base_qpair->enable_class_2) { 6974 if (vha->flags.init_done) 6975 fc_host_supported_classes(vha->host) = 6976 FC_COS_CLASS2 | FC_COS_CLASS3; 6977 6978 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6979 } else { 6980 if (vha->flags.init_done) 6981 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6982 6983 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6984 } 6985 } 6986 6987 void 6988 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6989 struct init_cb_24xx *icb) 6990 { 6991 struct qla_hw_data *ha = vha->hw; 6992 6993 if (!QLA_TGT_MODE_ENABLED()) 6994 return; 6995 6996 if (ha->tgt.node_name_set) { 6997 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6998 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6999 } 7000 } 7001 7002 void 7003 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7004 { 7005 struct qla_hw_data *ha = vha->hw; 7006 u32 tmp; 7007 7008 if (!QLA_TGT_MODE_ENABLED()) 7009 return; 7010 7011 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7012 if (!ha->tgt.saved_set) { 7013 /* We save only once */ 7014 ha->tgt.saved_exchange_count = nv->exchange_count; 7015 ha->tgt.saved_firmware_options_1 = 7016 nv->firmware_options_1; 7017 ha->tgt.saved_firmware_options_2 = 7018 nv->firmware_options_2; 7019 ha->tgt.saved_firmware_options_3 = 7020 nv->firmware_options_3; 7021 ha->tgt.saved_set = 1; 7022 } 7023 7024 if (qla_tgt_mode_enabled(vha)) 7025 nv->exchange_count = cpu_to_le16(0xFFFF); 7026 else /* dual */ 7027 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7028 7029 /* Enable target mode */ 7030 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7031 7032 /* Disable ini mode, if requested */ 7033 if (qla_tgt_mode_enabled(vha)) 7034 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7035 /* Disable Full Login after LIP */ 7036 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7037 /* Enable initial LIP */ 7038 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7039 /* 7040 * clear BIT 15 explicitly as we have seen at 7041 * least a couple of instances where this was set 7042 * and this was causing the firmware to not be 7043 * initialized. 7044 */ 7045 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7046 if (ql2xtgt_tape_enable) 7047 /* Enable FC tape support */ 7048 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7049 else 7050 /* Disable FC tape support */ 7051 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7052 7053 /* Disable Full Login after LIP */ 7054 nv->host_p &= cpu_to_le32(~BIT_10); 7055 /* Enable target PRLI control */ 7056 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7057 7058 /* Change Loop-prefer to Pt-Pt */ 7059 tmp = ~(BIT_4|BIT_5|BIT_6); 7060 nv->firmware_options_2 &= cpu_to_le32(tmp); 7061 tmp = P2P << 4; 7062 nv->firmware_options_2 |= cpu_to_le32(tmp); 7063 } else { 7064 if (ha->tgt.saved_set) { 7065 nv->exchange_count = ha->tgt.saved_exchange_count; 7066 nv->firmware_options_1 = 7067 ha->tgt.saved_firmware_options_1; 7068 nv->firmware_options_2 = 7069 ha->tgt.saved_firmware_options_2; 7070 nv->firmware_options_3 = 7071 ha->tgt.saved_firmware_options_3; 7072 } 7073 return; 7074 } 7075 7076 if (ha->base_qpair->enable_class_2) { 7077 if (vha->flags.init_done) 7078 fc_host_supported_classes(vha->host) = 7079 FC_COS_CLASS2 | FC_COS_CLASS3; 7080 7081 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7082 } else { 7083 if (vha->flags.init_done) 7084 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7085 7086 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7087 } 7088 } 7089 7090 void 7091 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7092 struct init_cb_81xx *icb) 7093 { 7094 struct qla_hw_data *ha = vha->hw; 7095 7096 if (!QLA_TGT_MODE_ENABLED()) 7097 return; 7098 7099 if (ha->tgt.node_name_set) { 7100 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7101 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7102 } 7103 } 7104 7105 void 7106 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7107 { 7108 if (!QLA_TGT_MODE_ENABLED()) 7109 return; 7110 7111 ha->msix_count += 1; /* For ATIO Q */ 7112 } 7113 7114 7115 void 7116 qlt_modify_vp_config(struct scsi_qla_host *vha, 7117 struct vp_config_entry_24xx *vpmod) 7118 { 7119 /* enable target mode. Bit5 = 1 => disable */ 7120 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7121 vpmod->options_idx1 &= ~BIT_5; 7122 7123 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7124 if (qla_tgt_mode_enabled(vha)) 7125 vpmod->options_idx1 &= ~BIT_4; 7126 } 7127 7128 void 7129 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7130 { 7131 int rc; 7132 7133 if (!QLA_TGT_MODE_ENABLED()) 7134 return; 7135 7136 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7137 IS_QLA28XX(ha)) { 7138 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7139 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7140 } else { 7141 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7142 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7143 } 7144 7145 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7146 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7147 7148 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7149 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7150 qlt_unknown_atio_work_fn); 7151 7152 qlt_clear_mode(base_vha); 7153 7154 rc = btree_init32(&ha->tgt.host_map); 7155 if (rc) 7156 ql_log(ql_log_info, base_vha, 0xd03d, 7157 "Unable to initialize ha->host_map btree\n"); 7158 7159 qlt_update_vp_map(base_vha, SET_VP_IDX); 7160 } 7161 7162 irqreturn_t 7163 qla83xx_msix_atio_q(int irq, void *dev_id) 7164 { 7165 struct rsp_que *rsp; 7166 scsi_qla_host_t *vha; 7167 struct qla_hw_data *ha; 7168 unsigned long flags; 7169 7170 rsp = (struct rsp_que *) dev_id; 7171 ha = rsp->hw; 7172 vha = pci_get_drvdata(ha->pdev); 7173 7174 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7175 7176 qlt_24xx_process_atio_queue(vha, 0); 7177 7178 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7179 7180 return IRQ_HANDLED; 7181 } 7182 7183 static void 7184 qlt_handle_abts_recv_work(struct work_struct *work) 7185 { 7186 struct qla_tgt_sess_op *op = container_of(work, 7187 struct qla_tgt_sess_op, work); 7188 scsi_qla_host_t *vha = op->vha; 7189 struct qla_hw_data *ha = vha->hw; 7190 unsigned long flags; 7191 7192 if (qla2x00_reset_active(vha) || 7193 (op->chip_reset != ha->base_qpair->chip_reset)) 7194 return; 7195 7196 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7197 qlt_24xx_process_atio_queue(vha, 0); 7198 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7199 7200 spin_lock_irqsave(&ha->hardware_lock, flags); 7201 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7202 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7203 7204 kfree(op); 7205 } 7206 7207 void 7208 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7209 response_t *pkt) 7210 { 7211 struct qla_tgt_sess_op *op; 7212 7213 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7214 7215 if (!op) { 7216 /* do not reach for ATIO queue here. This is best effort err 7217 * recovery at this point. 7218 */ 7219 qlt_response_pkt_all_vps(vha, rsp, pkt); 7220 return; 7221 } 7222 7223 memcpy(&op->atio, pkt, sizeof(*pkt)); 7224 op->vha = vha; 7225 op->chip_reset = vha->hw->base_qpair->chip_reset; 7226 op->rsp = rsp; 7227 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7228 queue_work(qla_tgt_wq, &op->work); 7229 return; 7230 } 7231 7232 int 7233 qlt_mem_alloc(struct qla_hw_data *ha) 7234 { 7235 if (!QLA_TGT_MODE_ENABLED()) 7236 return 0; 7237 7238 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7239 sizeof(struct qla_tgt_vp_map), 7240 GFP_KERNEL); 7241 if (!ha->tgt.tgt_vp_map) 7242 return -ENOMEM; 7243 7244 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7245 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7246 &ha->tgt.atio_dma, GFP_KERNEL); 7247 if (!ha->tgt.atio_ring) { 7248 kfree(ha->tgt.tgt_vp_map); 7249 return -ENOMEM; 7250 } 7251 return 0; 7252 } 7253 7254 void 7255 qlt_mem_free(struct qla_hw_data *ha) 7256 { 7257 if (!QLA_TGT_MODE_ENABLED()) 7258 return; 7259 7260 if (ha->tgt.atio_ring) { 7261 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7262 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7263 ha->tgt.atio_dma); 7264 } 7265 ha->tgt.atio_ring = NULL; 7266 ha->tgt.atio_dma = 0; 7267 kfree(ha->tgt.tgt_vp_map); 7268 ha->tgt.tgt_vp_map = NULL; 7269 } 7270 7271 /* vport_slock to be held by the caller */ 7272 void 7273 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7274 { 7275 void *slot; 7276 u32 key; 7277 int rc; 7278 7279 if (!QLA_TGT_MODE_ENABLED()) 7280 return; 7281 7282 key = vha->d_id.b24; 7283 7284 switch (cmd) { 7285 case SET_VP_IDX: 7286 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7287 break; 7288 case SET_AL_PA: 7289 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7290 if (!slot) { 7291 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7292 "Save vha in host_map %p %06x\n", vha, key); 7293 rc = btree_insert32(&vha->hw->tgt.host_map, 7294 key, vha, GFP_ATOMIC); 7295 if (rc) 7296 ql_log(ql_log_info, vha, 0xd03e, 7297 "Unable to insert s_id into host_map: %06x\n", 7298 key); 7299 return; 7300 } 7301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7302 "replace existing vha in host_map %p %06x\n", vha, key); 7303 btree_update32(&vha->hw->tgt.host_map, key, vha); 7304 break; 7305 case RESET_VP_IDX: 7306 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7307 break; 7308 case RESET_AL_PA: 7309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7310 "clear vha in host_map %p %06x\n", vha, key); 7311 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7312 if (slot) 7313 btree_remove32(&vha->hw->tgt.host_map, key); 7314 vha->d_id.b24 = 0; 7315 break; 7316 } 7317 } 7318 7319 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7320 { 7321 7322 if (!vha->d_id.b24) { 7323 vha->d_id = id; 7324 qlt_update_vp_map(vha, SET_AL_PA); 7325 } else if (vha->d_id.b24 != id.b24) { 7326 qlt_update_vp_map(vha, RESET_AL_PA); 7327 vha->d_id = id; 7328 qlt_update_vp_map(vha, SET_AL_PA); 7329 } 7330 } 7331 7332 static int __init qlt_parse_ini_mode(void) 7333 { 7334 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7335 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7336 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7337 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7338 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7339 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7340 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7341 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7342 else 7343 return false; 7344 7345 return true; 7346 } 7347 7348 int __init qlt_init(void) 7349 { 7350 int ret; 7351 7352 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7353 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7354 7355 if (!qlt_parse_ini_mode()) { 7356 ql_log(ql_log_fatal, NULL, 0xe06b, 7357 "qlt_parse_ini_mode() failed\n"); 7358 return -EINVAL; 7359 } 7360 7361 if (!QLA_TGT_MODE_ENABLED()) 7362 return 0; 7363 7364 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7365 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7366 qla_tgt_mgmt_cmd), 0, NULL); 7367 if (!qla_tgt_mgmt_cmd_cachep) { 7368 ql_log(ql_log_fatal, NULL, 0xd04b, 7369 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7370 return -ENOMEM; 7371 } 7372 7373 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7374 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7375 0, NULL); 7376 7377 if (!qla_tgt_plogi_cachep) { 7378 ql_log(ql_log_fatal, NULL, 0xe06d, 7379 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7380 ret = -ENOMEM; 7381 goto out_mgmt_cmd_cachep; 7382 } 7383 7384 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7385 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7386 if (!qla_tgt_mgmt_cmd_mempool) { 7387 ql_log(ql_log_fatal, NULL, 0xe06e, 7388 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7389 ret = -ENOMEM; 7390 goto out_plogi_cachep; 7391 } 7392 7393 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7394 if (!qla_tgt_wq) { 7395 ql_log(ql_log_fatal, NULL, 0xe06f, 7396 "alloc_workqueue for qla_tgt_wq failed\n"); 7397 ret = -ENOMEM; 7398 goto out_cmd_mempool; 7399 } 7400 /* 7401 * Return 1 to signal that initiator-mode is being disabled 7402 */ 7403 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7404 7405 out_cmd_mempool: 7406 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7407 out_plogi_cachep: 7408 kmem_cache_destroy(qla_tgt_plogi_cachep); 7409 out_mgmt_cmd_cachep: 7410 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7411 return ret; 7412 } 7413 7414 void qlt_exit(void) 7415 { 7416 if (!QLA_TGT_MODE_ENABLED()) 7417 return; 7418 7419 destroy_workqueue(qla_tgt_wq); 7420 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7421 kmem_cache_destroy(qla_tgt_plogi_cachep); 7422 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7423 } 7424