1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/blkdev.h> 21 #include <linux/interrupt.h> 22 #include <linux/pci.h> 23 #include <linux/delay.h> 24 #include <linux/list.h> 25 #include <linux/workqueue.h> 26 #include <asm/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 54 "For Dual Mode (qlini_mode=dual), this parameter determines " 55 "the percentage of exchanges/cmds FW will allocate resources " 56 "for Target mode."); 57 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum fcp_resp_rsp_codes { 74 FCP_TMF_CMPL = 0, 75 FCP_DATA_LEN_INVALID = 1, 76 FCP_CMND_FIELDS_INVALID = 2, 77 FCP_DATA_PARAM_MISMATCH = 3, 78 FCP_TMF_REJECTED = 4, 79 FCP_TMF_FAILED = 5, 80 FCP_TMF_INVALID_LUN = 9, 81 }; 82 83 /* 84 * fc_pri_ta from scsi/fc/fc_fcp.h 85 */ 86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 90 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 93 94 /* 95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 96 * must be called under HW lock and could unlock/lock it inside. 97 * It isn't an issue, since in the current implementation on the time when 98 * those functions are called: 99 * 100 * - Either context is IRQ and only IRQ handler can modify HW data, 101 * including rings related fields, 102 * 103 * - Or access to target mode variables from struct qla_tgt doesn't 104 * cross those functions boundaries, except tgt_stop, which 105 * additionally protected by irq_cmd_count. 106 */ 107 /* Predefs for callbacks handed to qla2xxx LLD */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static void qlt_send_notify_ack(struct qla_qpair *qpair, 121 struct imm_ntfy_from_isp *ntfy, 122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static const char *prot_op_str(u32 prot_op) 147 { 148 switch (prot_op) { 149 case TARGET_PROT_NORMAL: return "NORMAL"; 150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 154 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 156 default: return "UNKNOWN"; 157 } 158 } 159 160 /* This API intentionally takes dest as a parameter, rather than returning 161 * int value to avoid caller forgetting to issue wmb() after the store */ 162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 163 { 164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 165 *dest = atomic_inc_return(&base_vha->generation_tick); 166 /* memory barrier */ 167 wmb(); 168 } 169 170 /* Might release hw lock, then reaquire!! */ 171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 172 { 173 /* Send marker if required */ 174 if (unlikely(vha->marker_needed != 0)) { 175 int rc = qla2x00_issue_marker(vha, vha_locked); 176 177 if (rc != QLA_SUCCESS) { 178 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 179 "qla_target(%d): issue_marker() failed\n", 180 vha->vp_idx); 181 } 182 return rc; 183 } 184 return QLA_SUCCESS; 185 } 186 187 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, 188 be_id_t d_id) 189 { 190 struct scsi_qla_host *host; 191 uint32_t key; 192 193 if (vha->d_id.b.area == d_id.area && 194 vha->d_id.b.domain == d_id.domain && 195 vha->d_id.b.al_pa == d_id.al_pa) 196 return vha; 197 198 key = be_to_port_id(d_id).b24; 199 200 host = btree_lookup32(&vha->hw->host_map, key); 201 if (!host) 202 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 203 "Unable to find host %06x\n", key); 204 205 return host; 206 } 207 208 static inline 209 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 210 uint16_t vp_idx) 211 { 212 struct qla_hw_data *ha = vha->hw; 213 214 if (vha->vp_idx == vp_idx) 215 return vha; 216 217 BUG_ON(ha->tgt.tgt_vp_map == NULL); 218 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 219 return ha->tgt.tgt_vp_map[vp_idx].vha; 220 221 return NULL; 222 } 223 224 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 225 { 226 unsigned long flags; 227 228 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 229 230 vha->hw->tgt.num_pend_cmds++; 231 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 232 vha->qla_stats.stat_max_pend_cmds = 233 vha->hw->tgt.num_pend_cmds; 234 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 235 } 236 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 237 { 238 unsigned long flags; 239 240 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 241 vha->hw->tgt.num_pend_cmds--; 242 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 243 } 244 245 246 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 247 struct atio_from_isp *atio, uint8_t ha_locked) 248 { 249 struct qla_tgt_sess_op *u; 250 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 251 unsigned long flags; 252 253 if (tgt->tgt_stop) { 254 ql_dbg(ql_dbg_async, vha, 0x502c, 255 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 256 vha->vp_idx); 257 goto out_term; 258 } 259 260 u = kzalloc(sizeof(*u), GFP_ATOMIC); 261 if (u == NULL) 262 goto out_term; 263 264 u->vha = vha; 265 memcpy(&u->atio, atio, sizeof(*atio)); 266 INIT_LIST_HEAD(&u->cmd_list); 267 268 spin_lock_irqsave(&vha->cmd_list_lock, flags); 269 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 270 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 271 272 schedule_delayed_work(&vha->unknown_atio_work, 1); 273 274 out: 275 return; 276 277 out_term: 278 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 279 goto out; 280 } 281 282 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 283 uint8_t ha_locked) 284 { 285 struct qla_tgt_sess_op *u, *t; 286 scsi_qla_host_t *host; 287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 288 unsigned long flags; 289 uint8_t queued = 0; 290 291 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 292 if (u->aborted) { 293 ql_dbg(ql_dbg_async, vha, 0x502e, 294 "Freeing unknown %s %p, because of Abort\n", 295 "ATIO_TYPE7", u); 296 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 297 &u->atio, ha_locked, 0); 298 goto abort; 299 } 300 301 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 302 if (host != NULL) { 303 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 304 "Requeuing unknown ATIO_TYPE7 %p\n", u); 305 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 306 } else if (tgt->tgt_stop) { 307 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 308 "Freeing unknown %s %p, because tgt is being stopped\n", 309 "ATIO_TYPE7", u); 310 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 311 &u->atio, ha_locked, 0); 312 } else { 313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 314 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 315 if (!queued) { 316 queued = 1; 317 schedule_delayed_work(&vha->unknown_atio_work, 318 1); 319 } 320 continue; 321 } 322 323 abort: 324 spin_lock_irqsave(&vha->cmd_list_lock, flags); 325 list_del(&u->cmd_list); 326 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 327 kfree(u); 328 } 329 } 330 331 void qlt_unknown_atio_work_fn(struct work_struct *work) 332 { 333 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 334 struct scsi_qla_host, unknown_atio_work); 335 336 qlt_try_to_dequeue_unknown_atios(vha, 0); 337 } 338 339 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 340 struct atio_from_isp *atio, uint8_t ha_locked) 341 { 342 ql_dbg(ql_dbg_tgt, vha, 0xe072, 343 "%s: qla_target(%d): type %x ox_id %04x\n", 344 __func__, vha->vp_idx, atio->u.raw.entry_type, 345 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 346 347 switch (atio->u.raw.entry_type) { 348 case ATIO_TYPE7: 349 { 350 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 351 atio->u.isp24.fcp_hdr.d_id); 352 if (unlikely(NULL == host)) { 353 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 354 "qla_target(%d): Received ATIO_TYPE7 " 355 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 356 atio->u.isp24.fcp_hdr.d_id.domain, 357 atio->u.isp24.fcp_hdr.d_id.area, 358 atio->u.isp24.fcp_hdr.d_id.al_pa); 359 360 361 qlt_queue_unknown_atio(vha, atio, ha_locked); 362 break; 363 } 364 if (unlikely(!list_empty(&vha->unknown_atio_list))) 365 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 366 367 qlt_24xx_atio_pkt(host, atio, ha_locked); 368 break; 369 } 370 371 case IMMED_NOTIFY_TYPE: 372 { 373 struct scsi_qla_host *host = vha; 374 struct imm_ntfy_from_isp *entry = 375 (struct imm_ntfy_from_isp *)atio; 376 377 qlt_issue_marker(vha, ha_locked); 378 379 if ((entry->u.isp24.vp_index != 0xFF) && 380 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 381 host = qlt_find_host_by_vp_idx(vha, 382 entry->u.isp24.vp_index); 383 if (unlikely(!host)) { 384 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 385 "qla_target(%d): Received " 386 "ATIO (IMMED_NOTIFY_TYPE) " 387 "with unknown vp_index %d\n", 388 vha->vp_idx, entry->u.isp24.vp_index); 389 break; 390 } 391 } 392 qlt_24xx_atio_pkt(host, atio, ha_locked); 393 break; 394 } 395 396 case VP_RPT_ID_IOCB_TYPE: 397 qla24xx_report_id_acquisition(vha, 398 (struct vp_rpt_id_entry_24xx *)atio); 399 break; 400 401 case ABTS_RECV_24XX: 402 { 403 struct abts_recv_from_24xx *entry = 404 (struct abts_recv_from_24xx *)atio; 405 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 406 entry->vp_index); 407 unsigned long flags; 408 409 if (unlikely(!host)) { 410 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 411 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 412 "received, with unknown vp_index %d\n", 413 vha->vp_idx, entry->vp_index); 414 break; 415 } 416 if (!ha_locked) 417 spin_lock_irqsave(&host->hw->hardware_lock, flags); 418 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 419 if (!ha_locked) 420 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 421 break; 422 } 423 424 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 425 426 default: 427 ql_dbg(ql_dbg_tgt, vha, 0xe040, 428 "qla_target(%d): Received unknown ATIO atio " 429 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 430 break; 431 } 432 433 return false; 434 } 435 436 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 437 struct rsp_que *rsp, response_t *pkt) 438 { 439 switch (pkt->entry_type) { 440 case CTIO_CRC2: 441 ql_dbg(ql_dbg_tgt, vha, 0xe073, 442 "qla_target(%d):%s: CRC2 Response pkt\n", 443 vha->vp_idx, __func__); 444 fallthrough; 445 case CTIO_TYPE7: 446 { 447 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 448 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 449 entry->vp_index); 450 if (unlikely(!host)) { 451 ql_dbg(ql_dbg_tgt, vha, 0xe041, 452 "qla_target(%d): Response pkt (CTIO_TYPE7) " 453 "received, with unknown vp_index %d\n", 454 vha->vp_idx, entry->vp_index); 455 break; 456 } 457 qlt_response_pkt(host, rsp, pkt); 458 break; 459 } 460 461 case IMMED_NOTIFY_TYPE: 462 { 463 struct scsi_qla_host *host; 464 struct imm_ntfy_from_isp *entry = 465 (struct imm_ntfy_from_isp *)pkt; 466 467 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 468 if (unlikely(!host)) { 469 ql_dbg(ql_dbg_tgt, vha, 0xe042, 470 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 471 "received, with unknown vp_index %d\n", 472 vha->vp_idx, entry->u.isp24.vp_index); 473 break; 474 } 475 qlt_response_pkt(host, rsp, pkt); 476 break; 477 } 478 479 case NOTIFY_ACK_TYPE: 480 { 481 struct scsi_qla_host *host = vha; 482 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 483 484 if (0xFF != entry->u.isp24.vp_index) { 485 host = qlt_find_host_by_vp_idx(vha, 486 entry->u.isp24.vp_index); 487 if (unlikely(!host)) { 488 ql_dbg(ql_dbg_tgt, vha, 0xe043, 489 "qla_target(%d): Response " 490 "pkt (NOTIFY_ACK_TYPE) " 491 "received, with unknown " 492 "vp_index %d\n", vha->vp_idx, 493 entry->u.isp24.vp_index); 494 break; 495 } 496 } 497 qlt_response_pkt(host, rsp, pkt); 498 break; 499 } 500 501 case ABTS_RECV_24XX: 502 { 503 struct abts_recv_from_24xx *entry = 504 (struct abts_recv_from_24xx *)pkt; 505 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 506 entry->vp_index); 507 if (unlikely(!host)) { 508 ql_dbg(ql_dbg_tgt, vha, 0xe044, 509 "qla_target(%d): Response pkt " 510 "(ABTS_RECV_24XX) received, with unknown " 511 "vp_index %d\n", vha->vp_idx, entry->vp_index); 512 break; 513 } 514 qlt_response_pkt(host, rsp, pkt); 515 break; 516 } 517 518 case ABTS_RESP_24XX: 519 { 520 struct abts_resp_to_24xx *entry = 521 (struct abts_resp_to_24xx *)pkt; 522 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 523 entry->vp_index); 524 if (unlikely(!host)) { 525 ql_dbg(ql_dbg_tgt, vha, 0xe045, 526 "qla_target(%d): Response pkt " 527 "(ABTS_RECV_24XX) received, with unknown " 528 "vp_index %d\n", vha->vp_idx, entry->vp_index); 529 break; 530 } 531 qlt_response_pkt(host, rsp, pkt); 532 break; 533 } 534 default: 535 qlt_response_pkt(vha, rsp, pkt); 536 break; 537 } 538 539 } 540 541 /* 542 * All qlt_plogi_ack_t operations are protected by hardware_lock 543 */ 544 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 545 struct imm_ntfy_from_isp *ntfy, int type) 546 { 547 struct qla_work_evt *e; 548 549 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 550 if (!e) 551 return QLA_FUNCTION_FAILED; 552 553 e->u.nack.fcport = fcport; 554 e->u.nack.type = type; 555 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 556 return qla2x00_post_work(vha, e); 557 } 558 559 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 560 { 561 struct scsi_qla_host *vha = sp->vha; 562 unsigned long flags; 563 564 ql_dbg(ql_dbg_disc, vha, 0x20f2, 565 "Async done-%s res %x %8phC type %d\n", 566 sp->name, res, sp->fcport->port_name, sp->type); 567 568 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 569 sp->fcport->flags &= ~FCF_ASYNC_SENT; 570 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 571 572 switch (sp->type) { 573 case SRB_NACK_PLOGI: 574 sp->fcport->login_gen++; 575 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 576 sp->fcport->logout_on_delete = 1; 577 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 578 sp->fcport->send_els_logo = 0; 579 580 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 581 ql_dbg(ql_dbg_edif, vha, 0x20ef, 582 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 583 sp->fcport->port_name); 584 qla2x00_set_fcport_disc_state(sp->fcport, 585 DSC_LOGIN_AUTH_PEND); 586 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 587 sp->fcport->d_id.b24); 588 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 589 0, sp->fcport); 590 } 591 break; 592 593 case SRB_NACK_PRLI: 594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 595 sp->fcport->deleted = 0; 596 sp->fcport->send_els_logo = 0; 597 598 if (!sp->fcport->login_succ && 599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 600 sp->fcport->login_succ = 1; 601 602 vha->fcport_count++; 603 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 604 qla24xx_sched_upd_fcport(sp->fcport); 605 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 606 } else { 607 sp->fcport->login_retry = 0; 608 qla2x00_set_fcport_disc_state(sp->fcport, 609 DSC_LOGIN_COMPLETE); 610 sp->fcport->deleted = 0; 611 sp->fcport->logout_on_delete = 1; 612 } 613 break; 614 615 case SRB_NACK_LOGO: 616 sp->fcport->login_gen++; 617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 619 break; 620 } 621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 622 623 sp->free(sp); 624 } 625 626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 627 struct imm_ntfy_from_isp *ntfy, int type) 628 { 629 int rval = QLA_FUNCTION_FAILED; 630 srb_t *sp; 631 char *c = NULL; 632 633 fcport->flags |= FCF_ASYNC_SENT; 634 switch (type) { 635 case SRB_NACK_PLOGI: 636 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 637 c = "PLOGI"; 638 if (vha->hw->flags.edif_enabled && 639 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) 640 fcport->flags |= FCF_FCSP_DEVICE; 641 break; 642 case SRB_NACK_PRLI: 643 fcport->fw_login_state = DSC_LS_PRLI_PEND; 644 fcport->deleted = 0; 645 c = "PRLI"; 646 break; 647 case SRB_NACK_LOGO: 648 fcport->fw_login_state = DSC_LS_LOGO_PEND; 649 c = "LOGO"; 650 break; 651 } 652 653 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 654 if (!sp) 655 goto done; 656 657 sp->type = type; 658 sp->name = "nack"; 659 660 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 661 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 662 663 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 664 sp->done = qla2x00_async_nack_sp_done; 665 666 ql_dbg(ql_dbg_disc, vha, 0x20f4, 667 "Async-%s %8phC hndl %x %s\n", 668 sp->name, fcport->port_name, sp->handle, c); 669 670 rval = qla2x00_start_sp(sp); 671 if (rval != QLA_SUCCESS) 672 goto done_free_sp; 673 674 return rval; 675 676 done_free_sp: 677 sp->free(sp); 678 done: 679 fcport->flags &= ~FCF_ASYNC_SENT; 680 return rval; 681 } 682 683 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 684 { 685 fc_port_t *t; 686 687 switch (e->u.nack.type) { 688 case SRB_NACK_PRLI: 689 t = e->u.nack.fcport; 690 flush_work(&t->del_work); 691 flush_work(&t->free_work); 692 mutex_lock(&vha->vha_tgt.tgt_mutex); 693 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 694 mutex_unlock(&vha->vha_tgt.tgt_mutex); 695 if (t) { 696 ql_log(ql_log_info, vha, 0xd034, 697 "%s create sess success %p", __func__, t); 698 /* create sess has an extra kref */ 699 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 700 } 701 break; 702 } 703 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 704 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 705 } 706 707 void qla24xx_delete_sess_fn(struct work_struct *work) 708 { 709 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 710 struct qla_hw_data *ha = NULL; 711 712 if (!fcport || !fcport->vha || !fcport->vha->hw) 713 return; 714 715 ha = fcport->vha->hw; 716 717 if (fcport->se_sess) { 718 ha->tgt.tgt_ops->shutdown_sess(fcport); 719 ha->tgt.tgt_ops->put_sess(fcport); 720 } else { 721 qlt_unreg_sess(fcport); 722 } 723 } 724 725 /* 726 * Called from qla2x00_reg_remote_port() 727 */ 728 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 729 { 730 struct qla_hw_data *ha = vha->hw; 731 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 732 struct fc_port *sess = fcport; 733 unsigned long flags; 734 735 if (!vha->hw->tgt.tgt_ops) 736 return; 737 738 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 739 if (tgt->tgt_stop) { 740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 741 return; 742 } 743 744 if (fcport->disc_state == DSC_DELETE_PEND) { 745 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 746 return; 747 } 748 749 if (!sess->se_sess) { 750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 751 752 mutex_lock(&vha->vha_tgt.tgt_mutex); 753 sess = qlt_create_sess(vha, fcport, false); 754 mutex_unlock(&vha->vha_tgt.tgt_mutex); 755 756 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 757 } else { 758 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 759 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 760 return; 761 } 762 763 if (!kref_get_unless_zero(&sess->sess_kref)) { 764 ql_dbg(ql_dbg_disc, vha, 0x2107, 765 "%s: kref_get fail sess %8phC \n", 766 __func__, sess->port_name); 767 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 768 return; 769 } 770 771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 772 "qla_target(%u): %ssession for port %8phC " 773 "(loop ID %d) reappeared\n", vha->vp_idx, 774 sess->local ? "local " : "", sess->port_name, sess->loop_id); 775 776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 777 "Reappeared sess %p\n", sess); 778 779 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 780 fcport->loop_id, 781 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 782 } 783 784 if (sess && sess->local) { 785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 786 "qla_target(%u): local session for " 787 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 788 fcport->port_name, sess->loop_id); 789 sess->local = 0; 790 } 791 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 792 793 ha->tgt.tgt_ops->put_sess(sess); 794 } 795 796 /* 797 * This is a zero-base ref-counting solution, since hardware_lock 798 * guarantees that ref_count is not modified concurrently. 799 * Upon successful return content of iocb is undefined 800 */ 801 static struct qlt_plogi_ack_t * 802 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 803 struct imm_ntfy_from_isp *iocb) 804 { 805 struct qlt_plogi_ack_t *pla; 806 807 lockdep_assert_held(&vha->hw->hardware_lock); 808 809 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 810 if (pla->id.b24 == id->b24) { 811 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 812 "%s %d %8phC Term INOT due to new INOT", 813 __func__, __LINE__, 814 pla->iocb.u.isp24.port_name); 815 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 816 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 817 return pla; 818 } 819 } 820 821 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 822 if (!pla) { 823 ql_dbg(ql_dbg_async, vha, 0x5088, 824 "qla_target(%d): Allocation of plogi_ack failed\n", 825 vha->vp_idx); 826 return NULL; 827 } 828 829 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 830 pla->id = *id; 831 list_add_tail(&pla->list, &vha->plogi_ack_list); 832 833 return pla; 834 } 835 836 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 837 struct qlt_plogi_ack_t *pla) 838 { 839 struct imm_ntfy_from_isp *iocb = &pla->iocb; 840 port_id_t port_id; 841 uint16_t loop_id; 842 fc_port_t *fcport = pla->fcport; 843 844 BUG_ON(!pla->ref_count); 845 pla->ref_count--; 846 847 if (pla->ref_count) 848 return; 849 850 ql_dbg(ql_dbg_disc, vha, 0x5089, 851 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 852 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 853 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 854 iocb->u.isp24.port_id[0], 855 le16_to_cpu(iocb->u.isp24.nport_handle), 856 iocb->u.isp24.exchange_address, iocb->ox_id); 857 858 port_id.b.domain = iocb->u.isp24.port_id[2]; 859 port_id.b.area = iocb->u.isp24.port_id[1]; 860 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 861 port_id.b.rsvd_1 = 0; 862 863 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 864 865 fcport->loop_id = loop_id; 866 fcport->d_id = port_id; 867 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 868 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 869 else 870 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 871 872 list_for_each_entry(fcport, &vha->vp_fcports, list) { 873 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 874 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 875 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 876 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 877 } 878 879 list_del(&pla->list); 880 kmem_cache_free(qla_tgt_plogi_cachep, pla); 881 } 882 883 void 884 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 885 struct fc_port *sess, enum qlt_plogi_link_t link) 886 { 887 struct imm_ntfy_from_isp *iocb = &pla->iocb; 888 /* Inc ref_count first because link might already be pointing at pla */ 889 pla->ref_count++; 890 891 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 892 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 893 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 894 sess, link, sess->port_name, 895 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 896 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 897 pla->ref_count, pla, link); 898 899 if (link == QLT_PLOGI_LINK_CONFLICT) { 900 switch (sess->disc_state) { 901 case DSC_DELETED: 902 case DSC_DELETE_PEND: 903 pla->ref_count--; 904 return; 905 default: 906 break; 907 } 908 } 909 910 if (sess->plogi_link[link]) 911 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 912 913 if (link == QLT_PLOGI_LINK_SAME_WWN) 914 pla->fcport = sess; 915 916 sess->plogi_link[link] = pla; 917 } 918 919 typedef struct { 920 /* These fields must be initialized by the caller */ 921 port_id_t id; 922 /* 923 * number of cmds dropped while we were waiting for 924 * initiator to ack LOGO initialize to 1 if LOGO is 925 * triggered by a command, otherwise, to 0 926 */ 927 int cmd_count; 928 929 /* These fields are used by callee */ 930 struct list_head list; 931 } qlt_port_logo_t; 932 933 static void 934 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 935 { 936 qlt_port_logo_t *tmp; 937 int res; 938 939 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 940 res = 0; 941 goto out; 942 } 943 944 mutex_lock(&vha->vha_tgt.tgt_mutex); 945 946 list_for_each_entry(tmp, &vha->logo_list, list) { 947 if (tmp->id.b24 == logo->id.b24) { 948 tmp->cmd_count += logo->cmd_count; 949 mutex_unlock(&vha->vha_tgt.tgt_mutex); 950 return; 951 } 952 } 953 954 list_add_tail(&logo->list, &vha->logo_list); 955 956 mutex_unlock(&vha->vha_tgt.tgt_mutex); 957 958 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 959 960 mutex_lock(&vha->vha_tgt.tgt_mutex); 961 list_del(&logo->list); 962 mutex_unlock(&vha->vha_tgt.tgt_mutex); 963 964 out: 965 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 966 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 967 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 968 logo->cmd_count, res); 969 } 970 971 void qlt_free_session_done(struct work_struct *work) 972 { 973 struct fc_port *sess = container_of(work, struct fc_port, 974 free_work); 975 struct qla_tgt *tgt = sess->tgt; 976 struct scsi_qla_host *vha = sess->vha; 977 struct qla_hw_data *ha = vha->hw; 978 unsigned long flags; 979 bool logout_started = false; 980 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 981 struct qlt_plogi_ack_t *own = 982 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 983 984 ql_dbg(ql_dbg_disc, vha, 0xf084, 985 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 986 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 987 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 988 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 989 sess->logout_on_delete, sess->keep_nport_handle, 990 sess->send_els_logo); 991 992 if (!IS_SW_RESV_ADDR(sess->d_id)) { 993 if (ha->flags.edif_enabled && 994 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 995 sess->edif.authok = 0; 996 if (!ha->flags.host_shutting_down) { 997 ql_dbg(ql_dbg_edif, vha, 0x911e, 998 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 999 __func__, sess->port_name); 1000 qla2x00_release_all_sadb(vha, sess); 1001 } else { 1002 ql_dbg(ql_dbg_edif, vha, 0x911e, 1003 "%s bypassing release_all_sadb\n", 1004 __func__); 1005 } 1006 qla_edif_clear_appdata(vha, sess); 1007 qla_edif_sess_down(vha, sess); 1008 } 1009 qla2x00_mark_device_lost(vha, sess, 0); 1010 1011 if (sess->send_els_logo) { 1012 qlt_port_logo_t logo; 1013 1014 logo.id = sess->d_id; 1015 logo.cmd_count = 0; 1016 INIT_LIST_HEAD(&logo.list); 1017 if (!own) 1018 qlt_send_first_logo(vha, &logo); 1019 sess->send_els_logo = 0; 1020 } 1021 1022 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 1023 int rc; 1024 1025 if (!own || 1026 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1027 sess->logout_completed = 0; 1028 rc = qla2x00_post_async_logout_work(vha, sess, 1029 NULL); 1030 if (rc != QLA_SUCCESS) 1031 ql_log(ql_log_warn, vha, 0xf085, 1032 "Schedule logo failed sess %p rc %d\n", 1033 sess, rc); 1034 else 1035 logout_started = true; 1036 } else if (own && (own->iocb.u.isp24.status_subcode == 1037 ELS_PRLI) && ha->flags.rida_fmt2) { 1038 rc = qla2x00_post_async_prlo_work(vha, sess, 1039 NULL); 1040 if (rc != QLA_SUCCESS) 1041 ql_log(ql_log_warn, vha, 0xf085, 1042 "Schedule PRLO failed sess %p rc %d\n", 1043 sess, rc); 1044 else 1045 logout_started = true; 1046 } 1047 } /* if sess->logout_on_delete */ 1048 1049 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1050 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1051 sess->nvme_flag |= NVME_FLAG_DELETING; 1052 qla_nvme_unregister_remote_port(sess); 1053 } 1054 } 1055 1056 /* 1057 * Release the target session for FC Nexus from fabric module code. 1058 */ 1059 if (sess->se_sess != NULL) 1060 ha->tgt.tgt_ops->free_session(sess); 1061 1062 if (logout_started) { 1063 bool traced = false; 1064 u16 cnt = 0; 1065 1066 while (!READ_ONCE(sess->logout_completed)) { 1067 if (!traced) { 1068 ql_dbg(ql_dbg_disc, vha, 0xf086, 1069 "%s: waiting for sess %p logout\n", 1070 __func__, sess); 1071 traced = true; 1072 } 1073 msleep(100); 1074 cnt++; 1075 /* 1076 * Driver timeout is set to 22 Sec, update count value to loop 1077 * long enough for log-out to complete before advancing. Otherwise, 1078 * straddling logout can interfere with re-login attempt. 1079 */ 1080 if (cnt > 230) 1081 break; 1082 } 1083 1084 ql_dbg(ql_dbg_disc, vha, 0xf087, 1085 "%s: sess %p logout completed\n", __func__, sess); 1086 } 1087 1088 if (sess->logo_ack_needed) { 1089 sess->logo_ack_needed = 0; 1090 qla24xx_async_notify_ack(vha, sess, 1091 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1092 } 1093 1094 spin_lock_irqsave(&vha->work_lock, flags); 1095 sess->flags &= ~FCF_ASYNC_SENT; 1096 spin_unlock_irqrestore(&vha->work_lock, flags); 1097 1098 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1099 if (sess->se_sess) { 1100 sess->se_sess = NULL; 1101 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1102 tgt->sess_count--; 1103 } 1104 1105 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1106 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1107 sess->deleted = QLA_SESS_DELETED; 1108 1109 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1110 vha->fcport_count--; 1111 sess->login_succ = 0; 1112 } 1113 1114 qla2x00_clear_loop_id(sess); 1115 1116 if (sess->conflict) { 1117 sess->conflict->login_pause = 0; 1118 sess->conflict = NULL; 1119 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1120 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1121 } 1122 1123 { 1124 struct qlt_plogi_ack_t *con = 1125 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1126 struct imm_ntfy_from_isp *iocb; 1127 1128 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1129 1130 if (con) { 1131 iocb = &con->iocb; 1132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1133 "se_sess %p / sess %p port %8phC is gone," 1134 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1135 sess->se_sess, sess, sess->port_name, 1136 own ? "releasing own PLOGI" : "no own PLOGI pending", 1137 own ? own->ref_count : -1, 1138 iocb->u.isp24.port_name, con->ref_count); 1139 qlt_plogi_ack_unref(vha, con); 1140 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1141 } else { 1142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1143 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1144 sess->se_sess, sess, sess->port_name, 1145 own ? "releasing own PLOGI" : 1146 "no own PLOGI pending", 1147 own ? own->ref_count : -1); 1148 } 1149 1150 if (own) { 1151 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1152 qlt_plogi_ack_unref(vha, own); 1153 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1154 } 1155 } 1156 1157 sess->explicit_logout = 0; 1158 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1159 sess->free_pending = 0; 1160 1161 qla2x00_dfs_remove_rport(vha, sess); 1162 1163 ql_dbg(ql_dbg_disc, vha, 0xf001, 1164 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1165 sess, sess->port_name, vha->fcport_count); 1166 1167 if (tgt && (tgt->sess_count == 0)) 1168 wake_up_all(&tgt->waitQ); 1169 1170 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1171 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1172 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1173 switch (vha->host->active_mode) { 1174 case MODE_INITIATOR: 1175 case MODE_DUAL: 1176 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1177 qla2xxx_wake_dpc(vha); 1178 break; 1179 case MODE_TARGET: 1180 default: 1181 /* no-op */ 1182 break; 1183 } 1184 } 1185 1186 if (vha->fcport_count == 0) 1187 wake_up_all(&vha->fcport_waitQ); 1188 } 1189 1190 /* ha->tgt.sess_lock supposed to be held on entry */ 1191 void qlt_unreg_sess(struct fc_port *sess) 1192 { 1193 struct scsi_qla_host *vha = sess->vha; 1194 unsigned long flags; 1195 1196 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1197 "%s sess %p for deletion %8phC\n", 1198 __func__, sess, sess->port_name); 1199 1200 spin_lock_irqsave(&sess->vha->work_lock, flags); 1201 if (sess->free_pending) { 1202 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1203 return; 1204 } 1205 sess->free_pending = 1; 1206 /* 1207 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1208 * management from being sent. 1209 */ 1210 sess->flags |= FCF_ASYNC_SENT; 1211 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1212 1213 if (sess->se_sess) 1214 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1215 1216 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1217 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1218 sess->last_rscn_gen = sess->rscn_gen; 1219 sess->last_login_gen = sess->login_gen; 1220 1221 queue_work(sess->vha->hw->wq, &sess->free_work); 1222 } 1223 EXPORT_SYMBOL(qlt_unreg_sess); 1224 1225 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1226 { 1227 struct qla_hw_data *ha = vha->hw; 1228 struct fc_port *sess = NULL; 1229 uint16_t loop_id; 1230 int res = 0; 1231 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1232 unsigned long flags; 1233 1234 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1235 if (loop_id == 0xFFFF) { 1236 /* Global event */ 1237 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1238 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1239 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1240 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1241 } else { 1242 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1243 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1244 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1245 } 1246 1247 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1248 "Using sess for qla_tgt_reset: %p\n", sess); 1249 if (!sess) { 1250 res = -ESRCH; 1251 return res; 1252 } 1253 1254 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1255 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1256 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1257 mcmd, loop_id); 1258 1259 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1260 } 1261 1262 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1263 { 1264 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1265 sess->logout_on_delete = 0; 1266 sess->logo_ack_needed = 0; 1267 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1268 } 1269 } 1270 1271 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1272 { 1273 struct qla_tgt *tgt = sess->tgt; 1274 unsigned long flags; 1275 u16 sec; 1276 1277 switch (sess->disc_state) { 1278 case DSC_DELETE_PEND: 1279 return; 1280 case DSC_DELETED: 1281 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1282 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1283 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1284 wake_up_all(&tgt->waitQ); 1285 1286 if (sess->vha->fcport_count == 0) 1287 wake_up_all(&sess->vha->fcport_waitQ); 1288 return; 1289 } 1290 break; 1291 case DSC_UPD_FCPORT: 1292 /* 1293 * This port is not done reporting to upper layer. 1294 * let it finish 1295 */ 1296 sess->next_disc_state = DSC_DELETE_PEND; 1297 sec = jiffies_to_msecs(jiffies - 1298 sess->jiffies_at_registration)/1000; 1299 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1300 sess->sec_since_registration = sec; 1301 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1302 "%s %8phC : Slow Rport registration(%d Sec)\n", 1303 __func__, sess->port_name, sec); 1304 } 1305 return; 1306 default: 1307 break; 1308 } 1309 1310 spin_lock_irqsave(&sess->vha->work_lock, flags); 1311 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1312 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1313 return; 1314 } 1315 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1316 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1317 1318 sess->prli_pend_timer = 0; 1319 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1320 1321 qla24xx_chk_fcp_state(sess); 1322 1323 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1324 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1325 sess, sess->port_name, sess->fc4_type); 1326 1327 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1328 } 1329 1330 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1331 { 1332 struct fc_port *sess; 1333 scsi_qla_host_t *vha = tgt->vha; 1334 1335 list_for_each_entry(sess, &vha->vp_fcports, list) { 1336 if (sess->se_sess) 1337 qlt_schedule_sess_for_deletion(sess); 1338 } 1339 1340 /* At this point tgt could be already dead */ 1341 } 1342 1343 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1344 uint16_t *loop_id) 1345 { 1346 struct qla_hw_data *ha = vha->hw; 1347 dma_addr_t gid_list_dma; 1348 struct gid_list_info *gid_list, *gid; 1349 int res, rc, i; 1350 uint16_t entries; 1351 1352 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1353 &gid_list_dma, GFP_KERNEL); 1354 if (!gid_list) { 1355 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1356 "qla_target(%d): DMA Alloc failed of %u\n", 1357 vha->vp_idx, qla2x00_gid_list_size(ha)); 1358 return -ENOMEM; 1359 } 1360 1361 /* Get list of logged in devices */ 1362 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1363 if (rc != QLA_SUCCESS) { 1364 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1365 "qla_target(%d): get_id_list() failed: %x\n", 1366 vha->vp_idx, rc); 1367 res = -EBUSY; 1368 goto out_free_id_list; 1369 } 1370 1371 gid = gid_list; 1372 res = -ENOENT; 1373 for (i = 0; i < entries; i++) { 1374 if (gid->al_pa == s_id.al_pa && 1375 gid->area == s_id.area && 1376 gid->domain == s_id.domain) { 1377 *loop_id = le16_to_cpu(gid->loop_id); 1378 res = 0; 1379 break; 1380 } 1381 gid = (void *)gid + ha->gid_list_info_size; 1382 } 1383 1384 out_free_id_list: 1385 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1386 gid_list, gid_list_dma); 1387 return res; 1388 } 1389 1390 /* 1391 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1392 * Caller must put it. 1393 */ 1394 static struct fc_port *qlt_create_sess( 1395 struct scsi_qla_host *vha, 1396 fc_port_t *fcport, 1397 bool local) 1398 { 1399 struct qla_hw_data *ha = vha->hw; 1400 struct fc_port *sess = fcport; 1401 unsigned long flags; 1402 1403 if (vha->vha_tgt.qla_tgt->tgt_stop) 1404 return NULL; 1405 1406 if (fcport->se_sess) { 1407 if (!kref_get_unless_zero(&sess->sess_kref)) { 1408 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1409 "%s: kref_get_unless_zero failed for %8phC\n", 1410 __func__, sess->port_name); 1411 return NULL; 1412 } 1413 return fcport; 1414 } 1415 sess->tgt = vha->vha_tgt.qla_tgt; 1416 sess->local = local; 1417 1418 /* 1419 * Under normal circumstances we want to logout from firmware when 1420 * session eventually ends and release corresponding nport handle. 1421 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1422 * code will adjust these flags as necessary. 1423 */ 1424 sess->logout_on_delete = 1; 1425 sess->keep_nport_handle = 0; 1426 sess->logout_completed = 0; 1427 1428 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1429 &fcport->port_name[0], sess) < 0) { 1430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1431 "(%d) %8phC check_initiator_node_acl failed\n", 1432 vha->vp_idx, fcport->port_name); 1433 return NULL; 1434 } else { 1435 kref_init(&fcport->sess_kref); 1436 /* 1437 * Take an extra reference to ->sess_kref here to handle 1438 * fc_port access across ->tgt.sess_lock reaquire. 1439 */ 1440 if (!kref_get_unless_zero(&sess->sess_kref)) { 1441 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1442 "%s: kref_get_unless_zero failed for %8phC\n", 1443 __func__, sess->port_name); 1444 return NULL; 1445 } 1446 1447 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1448 if (!IS_SW_RESV_ADDR(sess->d_id)) 1449 vha->vha_tgt.qla_tgt->sess_count++; 1450 1451 qlt_do_generation_tick(vha, &sess->generation); 1452 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1453 } 1454 1455 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1456 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1457 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1458 vha->vha_tgt.qla_tgt->sess_count); 1459 1460 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1461 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1462 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1463 vha->vp_idx, local ? "local " : "", fcport->port_name, 1464 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1465 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1466 1467 return sess; 1468 } 1469 1470 /* 1471 * max_gen - specifies maximum session generation 1472 * at which this deletion requestion is still valid 1473 */ 1474 void 1475 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1476 { 1477 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1478 struct fc_port *sess = fcport; 1479 unsigned long flags; 1480 1481 if (!vha->hw->tgt.tgt_ops) 1482 return; 1483 1484 if (!tgt) 1485 return; 1486 1487 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1488 if (tgt->tgt_stop) { 1489 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1490 return; 1491 } 1492 if (!sess->se_sess) { 1493 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1494 return; 1495 } 1496 1497 if (max_gen - sess->generation < 0) { 1498 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1500 "Ignoring stale deletion request for se_sess %p / sess %p" 1501 " for port %8phC, req_gen %d, sess_gen %d\n", 1502 sess->se_sess, sess, sess->port_name, max_gen, 1503 sess->generation); 1504 return; 1505 } 1506 1507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1508 1509 sess->local = 1; 1510 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1511 qlt_schedule_sess_for_deletion(sess); 1512 } 1513 1514 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1515 { 1516 struct qla_hw_data *ha = tgt->ha; 1517 unsigned long flags; 1518 int res; 1519 /* 1520 * We need to protect against race, when tgt is freed before or 1521 * inside wake_up() 1522 */ 1523 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1524 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1525 "tgt %p, sess_count=%d\n", 1526 tgt, tgt->sess_count); 1527 res = (tgt->sess_count == 0); 1528 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1529 1530 return res; 1531 } 1532 1533 /* Called by tcm_qla2xxx configfs code */ 1534 int qlt_stop_phase1(struct qla_tgt *tgt) 1535 { 1536 struct scsi_qla_host *vha = tgt->vha; 1537 struct qla_hw_data *ha = tgt->ha; 1538 unsigned long flags; 1539 1540 mutex_lock(&ha->optrom_mutex); 1541 mutex_lock(&qla_tgt_mutex); 1542 1543 if (tgt->tgt_stop || tgt->tgt_stopped) { 1544 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1545 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1546 mutex_unlock(&qla_tgt_mutex); 1547 mutex_unlock(&ha->optrom_mutex); 1548 return -EPERM; 1549 } 1550 1551 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1552 vha->host_no, vha); 1553 /* 1554 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1555 * Lock is needed, because we still can get an incoming packet. 1556 */ 1557 mutex_lock(&vha->vha_tgt.tgt_mutex); 1558 tgt->tgt_stop = 1; 1559 qlt_clear_tgt_db(tgt); 1560 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1561 mutex_unlock(&qla_tgt_mutex); 1562 1563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1564 "Waiting for sess works (tgt %p)", tgt); 1565 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1566 while (!list_empty(&tgt->sess_works_list)) { 1567 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1568 flush_scheduled_work(); 1569 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1570 } 1571 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1572 1573 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1574 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1575 1576 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1577 1578 /* Big hammer */ 1579 if (!ha->flags.host_shutting_down && 1580 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1581 qlt_disable_vha(vha); 1582 1583 /* Wait for sessions to clear out (just in case) */ 1584 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1585 mutex_unlock(&ha->optrom_mutex); 1586 1587 return 0; 1588 } 1589 EXPORT_SYMBOL(qlt_stop_phase1); 1590 1591 /* Called by tcm_qla2xxx configfs code */ 1592 void qlt_stop_phase2(struct qla_tgt *tgt) 1593 { 1594 scsi_qla_host_t *vha = tgt->vha; 1595 1596 if (tgt->tgt_stopped) { 1597 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1598 "Already in tgt->tgt_stopped state\n"); 1599 dump_stack(); 1600 return; 1601 } 1602 if (!tgt->tgt_stop) { 1603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1604 "%s: phase1 stop is not completed\n", __func__); 1605 dump_stack(); 1606 return; 1607 } 1608 1609 mutex_lock(&tgt->ha->optrom_mutex); 1610 mutex_lock(&vha->vha_tgt.tgt_mutex); 1611 tgt->tgt_stop = 0; 1612 tgt->tgt_stopped = 1; 1613 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1614 mutex_unlock(&tgt->ha->optrom_mutex); 1615 1616 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1617 tgt); 1618 1619 switch (vha->qlini_mode) { 1620 case QLA2XXX_INI_MODE_EXCLUSIVE: 1621 vha->flags.online = 1; 1622 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1623 break; 1624 default: 1625 break; 1626 } 1627 } 1628 EXPORT_SYMBOL(qlt_stop_phase2); 1629 1630 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1631 static void qlt_release(struct qla_tgt *tgt) 1632 { 1633 scsi_qla_host_t *vha = tgt->vha; 1634 void *node; 1635 u64 key = 0; 1636 u16 i; 1637 struct qla_qpair_hint *h; 1638 struct qla_hw_data *ha = vha->hw; 1639 1640 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1641 qlt_stop_phase1(tgt); 1642 1643 if (!tgt->tgt_stopped) 1644 qlt_stop_phase2(tgt); 1645 1646 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1647 unsigned long flags; 1648 1649 h = &tgt->qphints[i]; 1650 if (h->qpair) { 1651 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1652 list_del(&h->hint_elem); 1653 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1654 h->qpair = NULL; 1655 } 1656 } 1657 kfree(tgt->qphints); 1658 mutex_lock(&qla_tgt_mutex); 1659 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1660 mutex_unlock(&qla_tgt_mutex); 1661 1662 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1663 btree_remove64(&tgt->lun_qpair_map, key); 1664 1665 btree_destroy64(&tgt->lun_qpair_map); 1666 1667 if (vha->vp_idx) 1668 if (ha->tgt.tgt_ops && 1669 ha->tgt.tgt_ops->remove_target && 1670 vha->vha_tgt.target_lport_ptr) 1671 ha->tgt.tgt_ops->remove_target(vha); 1672 1673 vha->vha_tgt.qla_tgt = NULL; 1674 1675 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1676 "Release of tgt %p finished\n", tgt); 1677 1678 kfree(tgt); 1679 } 1680 1681 /* ha->hardware_lock supposed to be held on entry */ 1682 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1683 const void *param, unsigned int param_size) 1684 { 1685 struct qla_tgt_sess_work_param *prm; 1686 unsigned long flags; 1687 1688 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1689 if (!prm) { 1690 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1691 "qla_target(%d): Unable to create session " 1692 "work, command will be refused", 0); 1693 return -ENOMEM; 1694 } 1695 1696 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1697 "Scheduling work (type %d, prm %p)" 1698 " to find session for param %p (size %d, tgt %p)\n", 1699 type, prm, param, param_size, tgt); 1700 1701 prm->type = type; 1702 memcpy(&prm->tm_iocb, param, param_size); 1703 1704 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1705 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1706 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1707 1708 schedule_work(&tgt->sess_work); 1709 1710 return 0; 1711 } 1712 1713 /* 1714 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1715 */ 1716 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1717 struct imm_ntfy_from_isp *ntfy, 1718 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1719 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1720 { 1721 struct scsi_qla_host *vha = qpair->vha; 1722 struct qla_hw_data *ha = vha->hw; 1723 request_t *pkt; 1724 struct nack_to_isp *nack; 1725 1726 if (!ha->flags.fw_started) 1727 return; 1728 1729 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1730 1731 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1732 if (!pkt) { 1733 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1734 "qla_target(%d): %s failed: unable to allocate " 1735 "request packet\n", vha->vp_idx, __func__); 1736 return; 1737 } 1738 1739 if (vha->vha_tgt.qla_tgt != NULL) 1740 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1741 1742 pkt->entry_type = NOTIFY_ACK_TYPE; 1743 pkt->entry_count = 1; 1744 1745 nack = (struct nack_to_isp *)pkt; 1746 nack->ox_id = ntfy->ox_id; 1747 1748 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1749 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1750 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1751 nack->u.isp24.flags = ntfy->u.isp24.flags & 1752 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1753 } 1754 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1755 nack->u.isp24.status = ntfy->u.isp24.status; 1756 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1757 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1758 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1759 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1760 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1761 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1762 nack->u.isp24.srr_reject_code = srr_reject_code; 1763 nack->u.isp24.srr_reject_code_expl = srr_explan; 1764 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1765 1766 /* TODO qualify this with EDIF enable */ 1767 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1768 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1769 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1770 } 1771 1772 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1773 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1774 vha->vp_idx, nack->u.isp24.status); 1775 1776 /* Memory Barrier */ 1777 wmb(); 1778 qla2x00_start_iocbs(vha, qpair->req); 1779 } 1780 1781 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1782 { 1783 struct scsi_qla_host *vha = mcmd->vha; 1784 struct qla_hw_data *ha = vha->hw; 1785 struct abts_resp_to_24xx *resp; 1786 __le32 f_ctl; 1787 uint32_t h; 1788 uint8_t *p; 1789 int rc; 1790 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1791 struct qla_qpair *qpair = mcmd->qpair; 1792 1793 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1794 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1795 ha, mcmd->fc_tm_rsp); 1796 1797 rc = qlt_check_reserve_free_req(qpair, 1); 1798 if (rc) { 1799 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1800 "qla_target(%d): %s failed: unable to allocate request packet\n", 1801 vha->vp_idx, __func__); 1802 return -EAGAIN; 1803 } 1804 1805 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1806 memset(resp, 0, sizeof(*resp)); 1807 1808 h = qlt_make_handle(qpair); 1809 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1810 /* 1811 * CTIO type 7 from the firmware doesn't provide a way to 1812 * know the initiator's LOOP ID, hence we can't find 1813 * the session and, so, the command. 1814 */ 1815 return -EAGAIN; 1816 } else { 1817 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1818 } 1819 1820 resp->handle = make_handle(qpair->req->id, h); 1821 resp->entry_type = ABTS_RESP_24XX; 1822 resp->entry_count = 1; 1823 resp->nport_handle = abts->nport_handle; 1824 resp->vp_index = vha->vp_idx; 1825 resp->sof_type = abts->sof_type; 1826 resp->exchange_address = abts->exchange_address; 1827 resp->fcp_hdr_le = abts->fcp_hdr_le; 1828 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1829 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1830 F_CTL_SEQ_INITIATIVE); 1831 p = (uint8_t *)&f_ctl; 1832 resp->fcp_hdr_le.f_ctl[0] = *p++; 1833 resp->fcp_hdr_le.f_ctl[1] = *p++; 1834 resp->fcp_hdr_le.f_ctl[2] = *p; 1835 1836 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1837 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1838 1839 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1840 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1841 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1842 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1843 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1844 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1845 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1846 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1847 } else { 1848 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1849 resp->payload.ba_rjt.reason_code = 1850 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1851 /* Other bytes are zero */ 1852 } 1853 1854 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1855 1856 /* Memory Barrier */ 1857 wmb(); 1858 if (qpair->reqq_start_iocbs) 1859 qpair->reqq_start_iocbs(qpair); 1860 else 1861 qla2x00_start_iocbs(vha, qpair->req); 1862 1863 return rc; 1864 } 1865 1866 /* 1867 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1868 */ 1869 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1870 struct abts_recv_from_24xx *abts, uint32_t status, 1871 bool ids_reversed) 1872 { 1873 struct scsi_qla_host *vha = qpair->vha; 1874 struct qla_hw_data *ha = vha->hw; 1875 struct abts_resp_to_24xx *resp; 1876 __le32 f_ctl; 1877 uint8_t *p; 1878 1879 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1880 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1881 ha, abts, status); 1882 1883 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1884 NULL); 1885 if (!resp) { 1886 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1887 "qla_target(%d): %s failed: unable to allocate " 1888 "request packet", vha->vp_idx, __func__); 1889 return; 1890 } 1891 1892 resp->entry_type = ABTS_RESP_24XX; 1893 resp->handle = QLA_TGT_SKIP_HANDLE; 1894 resp->entry_count = 1; 1895 resp->nport_handle = abts->nport_handle; 1896 resp->vp_index = vha->vp_idx; 1897 resp->sof_type = abts->sof_type; 1898 resp->exchange_address = abts->exchange_address; 1899 resp->fcp_hdr_le = abts->fcp_hdr_le; 1900 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1901 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1902 F_CTL_SEQ_INITIATIVE); 1903 p = (uint8_t *)&f_ctl; 1904 resp->fcp_hdr_le.f_ctl[0] = *p++; 1905 resp->fcp_hdr_le.f_ctl[1] = *p++; 1906 resp->fcp_hdr_le.f_ctl[2] = *p; 1907 if (ids_reversed) { 1908 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1909 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1910 } else { 1911 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1912 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1913 } 1914 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1915 if (status == FCP_TMF_CMPL) { 1916 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1917 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1918 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1919 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1920 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1921 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1922 } else { 1923 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1924 resp->payload.ba_rjt.reason_code = 1925 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1926 /* Other bytes are zero */ 1927 } 1928 1929 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1930 1931 /* Memory Barrier */ 1932 wmb(); 1933 if (qpair->reqq_start_iocbs) 1934 qpair->reqq_start_iocbs(qpair); 1935 else 1936 qla2x00_start_iocbs(vha, qpair->req); 1937 } 1938 1939 /* 1940 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1941 */ 1942 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1943 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1944 { 1945 struct ctio7_to_24xx *ctio; 1946 u16 tmp; 1947 struct abts_recv_from_24xx *entry; 1948 1949 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1950 if (ctio == NULL) { 1951 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1952 "qla_target(%d): %s failed: unable to allocate " 1953 "request packet\n", vha->vp_idx, __func__); 1954 return; 1955 } 1956 1957 if (mcmd) 1958 /* abts from remote port */ 1959 entry = &mcmd->orig_iocb.abts; 1960 else 1961 /* abts from this driver. */ 1962 entry = (struct abts_recv_from_24xx *)pkt; 1963 1964 /* 1965 * We've got on entrance firmware's response on by us generated 1966 * ABTS response. So, in it ID fields are reversed. 1967 */ 1968 1969 ctio->entry_type = CTIO_TYPE7; 1970 ctio->entry_count = 1; 1971 ctio->nport_handle = entry->nport_handle; 1972 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1973 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1974 ctio->vp_index = vha->vp_idx; 1975 ctio->exchange_addr = entry->exchange_addr_to_abort; 1976 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1977 1978 if (mcmd) { 1979 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1980 1981 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1982 tmp |= (mcmd->abort_io_attr << 9); 1983 else if (qpair->retry_term_cnt & 1) 1984 tmp |= (0x4 << 9); 1985 } else { 1986 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1987 1988 if (qpair->retry_term_cnt & 1) 1989 tmp |= (0x4 << 9); 1990 } 1991 ctio->u.status1.flags = cpu_to_le16(tmp); 1992 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1993 1994 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1995 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1996 le16_to_cpu(ctio->u.status1.flags), 1997 le16_to_cpu(ctio->u.status1.ox_id), 1998 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1999 2000 /* Memory Barrier */ 2001 wmb(); 2002 if (qpair->reqq_start_iocbs) 2003 qpair->reqq_start_iocbs(qpair); 2004 else 2005 qla2x00_start_iocbs(vha, qpair->req); 2006 2007 if (mcmd) 2008 qlt_build_abts_resp_iocb(mcmd); 2009 else 2010 qlt_24xx_send_abts_resp(qpair, 2011 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2012 2013 } 2014 2015 /* drop cmds for the given lun 2016 * XXX only looks for cmds on the port through which lun reset was recieved 2017 * XXX does not go through the list of other port (which may have cmds 2018 * for the same lun) 2019 */ 2020 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2021 { 2022 struct qla_tgt_sess_op *op; 2023 struct qla_tgt_cmd *cmd; 2024 uint32_t key; 2025 unsigned long flags; 2026 2027 key = sid_to_key(s_id); 2028 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2029 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 2030 uint32_t op_key; 2031 u64 op_lun; 2032 2033 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2034 op_lun = scsilun_to_int( 2035 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2036 if (op_key == key && op_lun == lun) 2037 op->aborted = true; 2038 } 2039 2040 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2041 uint32_t op_key; 2042 u64 op_lun; 2043 2044 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2045 op_lun = scsilun_to_int( 2046 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2047 if (op_key == key && op_lun == lun) 2048 op->aborted = true; 2049 } 2050 2051 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2052 uint32_t cmd_key; 2053 u64 cmd_lun; 2054 2055 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2056 cmd_lun = scsilun_to_int( 2057 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2058 if (cmd_key == key && cmd_lun == lun) 2059 cmd->aborted = 1; 2060 } 2061 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2062 } 2063 2064 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2065 uint64_t unpacked_lun) 2066 { 2067 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2068 struct qla_qpair_hint *h = NULL; 2069 2070 if (vha->flags.qpairs_available) { 2071 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2072 if (!h) 2073 h = &tgt->qphints[0]; 2074 } else { 2075 h = &tgt->qphints[0]; 2076 } 2077 2078 return h; 2079 } 2080 2081 static void qlt_do_tmr_work(struct work_struct *work) 2082 { 2083 struct qla_tgt_mgmt_cmd *mcmd = 2084 container_of(work, struct qla_tgt_mgmt_cmd, work); 2085 struct qla_hw_data *ha = mcmd->vha->hw; 2086 int rc; 2087 uint32_t tag; 2088 unsigned long flags; 2089 2090 switch (mcmd->tmr_func) { 2091 case QLA_TGT_ABTS: 2092 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2093 break; 2094 default: 2095 tag = 0; 2096 break; 2097 } 2098 2099 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2100 mcmd->tmr_func, tag); 2101 2102 if (rc != 0) { 2103 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2104 switch (mcmd->tmr_func) { 2105 case QLA_TGT_ABTS: 2106 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2107 qlt_build_abts_resp_iocb(mcmd); 2108 break; 2109 case QLA_TGT_LUN_RESET: 2110 case QLA_TGT_CLEAR_TS: 2111 case QLA_TGT_ABORT_TS: 2112 case QLA_TGT_CLEAR_ACA: 2113 case QLA_TGT_TARGET_RESET: 2114 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2115 qla_sam_status); 2116 break; 2117 2118 case QLA_TGT_ABORT_ALL: 2119 case QLA_TGT_NEXUS_LOSS_SESS: 2120 case QLA_TGT_NEXUS_LOSS: 2121 qlt_send_notify_ack(mcmd->qpair, 2122 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2123 break; 2124 } 2125 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2126 2127 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2128 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2129 mcmd->vha->vp_idx, rc); 2130 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2131 } 2132 } 2133 2134 /* ha->hardware_lock supposed to be held on entry */ 2135 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2136 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2137 { 2138 struct qla_hw_data *ha = vha->hw; 2139 struct qla_tgt_mgmt_cmd *mcmd; 2140 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2141 struct qla_tgt_cmd *abort_cmd; 2142 2143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2144 "qla_target(%d): task abort (tag=%d)\n", 2145 vha->vp_idx, abts->exchange_addr_to_abort); 2146 2147 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2148 if (mcmd == NULL) { 2149 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2150 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2151 vha->vp_idx, __func__); 2152 return -ENOMEM; 2153 } 2154 memset(mcmd, 0, sizeof(*mcmd)); 2155 mcmd->cmd_type = TYPE_TGT_TMCMD; 2156 mcmd->sess = sess; 2157 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2158 mcmd->reset_count = ha->base_qpair->chip_reset; 2159 mcmd->tmr_func = QLA_TGT_ABTS; 2160 mcmd->qpair = h->qpair; 2161 mcmd->vha = vha; 2162 2163 /* 2164 * LUN is looked up by target-core internally based on the passed 2165 * abts->exchange_addr_to_abort tag. 2166 */ 2167 mcmd->se_cmd.cpuid = h->cpuid; 2168 2169 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2170 le32_to_cpu(abts->exchange_addr_to_abort)); 2171 if (!abort_cmd) 2172 return -EIO; 2173 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2174 2175 if (abort_cmd->qpair) { 2176 mcmd->qpair = abort_cmd->qpair; 2177 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2178 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2179 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2180 } 2181 2182 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2183 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2184 2185 return 0; 2186 } 2187 2188 /* 2189 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2190 */ 2191 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2192 struct abts_recv_from_24xx *abts) 2193 { 2194 struct qla_hw_data *ha = vha->hw; 2195 struct fc_port *sess; 2196 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2197 be_id_t s_id; 2198 int rc; 2199 unsigned long flags; 2200 2201 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2202 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2203 "qla_target(%d): ABTS: Abort Sequence not " 2204 "supported\n", vha->vp_idx); 2205 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2206 false); 2207 return; 2208 } 2209 2210 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2212 "qla_target(%d): ABTS: Unknown Exchange " 2213 "Address received\n", vha->vp_idx); 2214 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2215 false); 2216 return; 2217 } 2218 2219 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2220 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2221 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2222 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2223 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2224 2225 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2226 2227 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2228 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2229 if (!sess) { 2230 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2231 "qla_target(%d): task abort for non-existent session\n", 2232 vha->vp_idx); 2233 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2234 2235 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2236 false); 2237 return; 2238 } 2239 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2240 2241 2242 if (sess->deleted) { 2243 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2244 false); 2245 return; 2246 } 2247 2248 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2249 if (rc != 0) { 2250 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2251 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2252 vha->vp_idx, rc); 2253 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2254 false); 2255 return; 2256 } 2257 } 2258 2259 /* 2260 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2261 */ 2262 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2263 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2264 { 2265 struct scsi_qla_host *ha = mcmd->vha; 2266 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2267 struct ctio7_to_24xx *ctio; 2268 uint16_t temp; 2269 2270 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2271 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2272 ha, atio, resp_code); 2273 2274 2275 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2276 if (ctio == NULL) { 2277 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2278 "qla_target(%d): %s failed: unable to allocate " 2279 "request packet\n", ha->vp_idx, __func__); 2280 return; 2281 } 2282 2283 ctio->entry_type = CTIO_TYPE7; 2284 ctio->entry_count = 1; 2285 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2286 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2287 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2288 ctio->vp_index = ha->vp_idx; 2289 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2290 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2291 temp = (atio->u.isp24.attr << 9)| 2292 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2293 ctio->u.status1.flags = cpu_to_le16(temp); 2294 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2295 ctio->u.status1.ox_id = cpu_to_le16(temp); 2296 ctio->u.status1.scsi_status = 2297 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2298 ctio->u.status1.response_len = cpu_to_le16(8); 2299 ctio->u.status1.sense_data[0] = resp_code; 2300 2301 /* Memory Barrier */ 2302 wmb(); 2303 if (qpair->reqq_start_iocbs) 2304 qpair->reqq_start_iocbs(qpair); 2305 else 2306 qla2x00_start_iocbs(ha, qpair->req); 2307 } 2308 2309 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2310 { 2311 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2312 } 2313 EXPORT_SYMBOL(qlt_free_mcmd); 2314 2315 /* 2316 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2317 * reacquire 2318 */ 2319 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2320 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2321 { 2322 struct atio_from_isp *atio = &cmd->atio; 2323 struct ctio7_to_24xx *ctio; 2324 uint16_t temp; 2325 struct scsi_qla_host *vha = cmd->vha; 2326 2327 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2328 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2329 "sense_key=%02x, asc=%02x, ascq=%02x", 2330 vha, atio, scsi_status, sense_key, asc, ascq); 2331 2332 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2333 if (!ctio) { 2334 ql_dbg(ql_dbg_async, vha, 0x3067, 2335 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2336 vha->host_no, __func__); 2337 goto out; 2338 } 2339 2340 ctio->entry_type = CTIO_TYPE7; 2341 ctio->entry_count = 1; 2342 ctio->handle = QLA_TGT_SKIP_HANDLE; 2343 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2344 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2345 ctio->vp_index = vha->vp_idx; 2346 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2347 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2348 temp = (atio->u.isp24.attr << 9) | 2349 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2350 ctio->u.status1.flags = cpu_to_le16(temp); 2351 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2352 ctio->u.status1.ox_id = cpu_to_le16(temp); 2353 ctio->u.status1.scsi_status = 2354 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2355 ctio->u.status1.response_len = cpu_to_le16(18); 2356 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2357 2358 if (ctio->u.status1.residual != 0) 2359 ctio->u.status1.scsi_status |= 2360 cpu_to_le16(SS_RESIDUAL_UNDER); 2361 2362 /* Fixed format sense data. */ 2363 ctio->u.status1.sense_data[0] = 0x70; 2364 ctio->u.status1.sense_data[2] = sense_key; 2365 /* Additional sense length */ 2366 ctio->u.status1.sense_data[7] = 0xa; 2367 /* ASC and ASCQ */ 2368 ctio->u.status1.sense_data[12] = asc; 2369 ctio->u.status1.sense_data[13] = ascq; 2370 2371 /* Memory Barrier */ 2372 wmb(); 2373 2374 if (qpair->reqq_start_iocbs) 2375 qpair->reqq_start_iocbs(qpair); 2376 else 2377 qla2x00_start_iocbs(vha, qpair->req); 2378 2379 out: 2380 return; 2381 } 2382 2383 /* callback from target fabric module code */ 2384 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2385 { 2386 struct scsi_qla_host *vha = mcmd->sess->vha; 2387 struct qla_hw_data *ha = vha->hw; 2388 unsigned long flags; 2389 struct qla_qpair *qpair = mcmd->qpair; 2390 bool free_mcmd = true; 2391 2392 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2393 "TM response mcmd (%p) status %#x state %#x", 2394 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2395 2396 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2397 2398 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2399 /* 2400 * Either the port is not online or this request was from 2401 * previous life, just abort the processing. 2402 */ 2403 ql_dbg(ql_dbg_async, vha, 0xe100, 2404 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2405 vha->flags.online, qla2x00_reset_active(vha), 2406 mcmd->reset_count, qpair->chip_reset); 2407 ha->tgt.tgt_ops->free_mcmd(mcmd); 2408 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2409 return; 2410 } 2411 2412 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2413 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2414 case ELS_LOGO: 2415 case ELS_PRLO: 2416 case ELS_TPRLO: 2417 ql_dbg(ql_dbg_disc, vha, 0x2106, 2418 "TM response logo %8phC status %#x state %#x", 2419 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2420 mcmd->flags); 2421 qlt_schedule_sess_for_deletion(mcmd->sess); 2422 break; 2423 default: 2424 qlt_send_notify_ack(vha->hw->base_qpair, 2425 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2426 break; 2427 } 2428 } else { 2429 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2430 qlt_build_abts_resp_iocb(mcmd); 2431 free_mcmd = false; 2432 } else 2433 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2434 mcmd->fc_tm_rsp); 2435 } 2436 /* 2437 * Make the callback for ->free_mcmd() to queue_work() and invoke 2438 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2439 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2440 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2441 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2442 * qlt_xmit_tm_rsp() returns here.. 2443 */ 2444 if (free_mcmd) 2445 ha->tgt.tgt_ops->free_mcmd(mcmd); 2446 2447 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2448 } 2449 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2450 2451 /* No locks */ 2452 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2453 { 2454 struct qla_tgt_cmd *cmd = prm->cmd; 2455 2456 BUG_ON(cmd->sg_cnt == 0); 2457 2458 prm->sg = (struct scatterlist *)cmd->sg; 2459 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2460 cmd->sg_cnt, cmd->dma_data_direction); 2461 if (unlikely(prm->seg_cnt == 0)) 2462 goto out_err; 2463 2464 prm->cmd->sg_mapped = 1; 2465 2466 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2467 /* 2468 * If greater than four sg entries then we need to allocate 2469 * the continuation entries 2470 */ 2471 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2472 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2473 QLA_TGT_DATASEGS_PER_CMD_24XX, 2474 QLA_TGT_DATASEGS_PER_CONT_24XX); 2475 } else { 2476 /* DIF */ 2477 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2478 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2479 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2480 prm->tot_dsds = prm->seg_cnt; 2481 } else 2482 prm->tot_dsds = prm->seg_cnt; 2483 2484 if (cmd->prot_sg_cnt) { 2485 prm->prot_sg = cmd->prot_sg; 2486 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2487 cmd->prot_sg, cmd->prot_sg_cnt, 2488 cmd->dma_data_direction); 2489 if (unlikely(prm->prot_seg_cnt == 0)) 2490 goto out_err; 2491 2492 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2493 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2494 /* Dif Bundling not support here */ 2495 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2496 cmd->blk_sz); 2497 prm->tot_dsds += prm->prot_seg_cnt; 2498 } else 2499 prm->tot_dsds += prm->prot_seg_cnt; 2500 } 2501 } 2502 2503 return 0; 2504 2505 out_err: 2506 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2507 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2508 0, prm->cmd->sg_cnt); 2509 return -1; 2510 } 2511 2512 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2513 { 2514 struct qla_hw_data *ha; 2515 struct qla_qpair *qpair; 2516 2517 if (!cmd->sg_mapped) 2518 return; 2519 2520 qpair = cmd->qpair; 2521 2522 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2523 cmd->dma_data_direction); 2524 cmd->sg_mapped = 0; 2525 2526 if (cmd->prot_sg_cnt) 2527 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2528 cmd->dma_data_direction); 2529 2530 if (!cmd->ctx) 2531 return; 2532 ha = vha->hw; 2533 if (cmd->ctx_dsd_alloced) 2534 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2535 2536 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2537 } 2538 2539 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2540 uint32_t req_cnt) 2541 { 2542 uint32_t cnt; 2543 struct req_que *req = qpair->req; 2544 2545 if (req->cnt < (req_cnt + 2)) { 2546 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2547 rd_reg_dword_relaxed(req->req_q_out)); 2548 2549 if (req->ring_index < cnt) 2550 req->cnt = cnt - req->ring_index; 2551 else 2552 req->cnt = req->length - (req->ring_index - cnt); 2553 2554 if (unlikely(req->cnt < (req_cnt + 2))) 2555 return -EAGAIN; 2556 } 2557 2558 req->cnt -= req_cnt; 2559 2560 return 0; 2561 } 2562 2563 /* 2564 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2565 */ 2566 static inline void *qlt_get_req_pkt(struct req_que *req) 2567 { 2568 /* Adjust ring index. */ 2569 req->ring_index++; 2570 if (req->ring_index == req->length) { 2571 req->ring_index = 0; 2572 req->ring_ptr = req->ring; 2573 } else { 2574 req->ring_ptr++; 2575 } 2576 return (cont_entry_t *)req->ring_ptr; 2577 } 2578 2579 /* ha->hardware_lock supposed to be held on entry */ 2580 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2581 { 2582 uint32_t h; 2583 int index; 2584 uint8_t found = 0; 2585 struct req_que *req = qpair->req; 2586 2587 h = req->current_outstanding_cmd; 2588 2589 for (index = 1; index < req->num_outstanding_cmds; index++) { 2590 h++; 2591 if (h == req->num_outstanding_cmds) 2592 h = 1; 2593 2594 if (h == QLA_TGT_SKIP_HANDLE) 2595 continue; 2596 2597 if (!req->outstanding_cmds[h]) { 2598 found = 1; 2599 break; 2600 } 2601 } 2602 2603 if (found) { 2604 req->current_outstanding_cmd = h; 2605 } else { 2606 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2607 "qla_target(%d): Ran out of empty cmd slots\n", 2608 qpair->vha->vp_idx); 2609 h = QLA_TGT_NULL_HANDLE; 2610 } 2611 2612 return h; 2613 } 2614 2615 /* ha->hardware_lock supposed to be held on entry */ 2616 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2617 struct qla_tgt_prm *prm) 2618 { 2619 uint32_t h; 2620 struct ctio7_to_24xx *pkt; 2621 struct atio_from_isp *atio = &prm->cmd->atio; 2622 uint16_t temp; 2623 struct qla_tgt_cmd *cmd = prm->cmd; 2624 2625 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2626 prm->pkt = pkt; 2627 memset(pkt, 0, sizeof(*pkt)); 2628 2629 pkt->entry_type = CTIO_TYPE7; 2630 pkt->entry_count = (uint8_t)prm->req_cnt; 2631 pkt->vp_index = prm->cmd->vp_idx; 2632 2633 h = qlt_make_handle(qpair); 2634 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2635 /* 2636 * CTIO type 7 from the firmware doesn't provide a way to 2637 * know the initiator's LOOP ID, hence we can't find 2638 * the session and, so, the command. 2639 */ 2640 return -EAGAIN; 2641 } else 2642 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2643 2644 pkt->handle = make_handle(qpair->req->id, h); 2645 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2646 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2647 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2648 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2649 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2650 temp = atio->u.isp24.attr << 9; 2651 pkt->u.status0.flags |= cpu_to_le16(temp); 2652 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2653 pkt->u.status0.ox_id = cpu_to_le16(temp); 2654 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2655 2656 if (cmd->edif) { 2657 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2658 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2659 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2660 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2661 2662 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2663 } 2664 2665 return 0; 2666 } 2667 2668 /* 2669 * ha->hardware_lock supposed to be held on entry. We have already made sure 2670 * that there is sufficient amount of request entries to not drop it. 2671 */ 2672 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2673 { 2674 int cnt; 2675 struct dsd64 *cur_dsd; 2676 2677 /* Build continuation packets */ 2678 while (prm->seg_cnt > 0) { 2679 cont_a64_entry_t *cont_pkt64 = 2680 (cont_a64_entry_t *)qlt_get_req_pkt( 2681 prm->cmd->qpair->req); 2682 2683 /* 2684 * Make sure that from cont_pkt64 none of 2685 * 64-bit specific fields used for 32-bit 2686 * addressing. Cast to (cont_entry_t *) for 2687 * that. 2688 */ 2689 2690 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2691 2692 cont_pkt64->entry_count = 1; 2693 cont_pkt64->sys_define = 0; 2694 2695 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2696 cur_dsd = cont_pkt64->dsd; 2697 2698 /* Load continuation entry data segments */ 2699 for (cnt = 0; 2700 cnt < QLA_TGT_DATASEGS_PER_CONT_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 } 2707 2708 /* 2709 * ha->hardware_lock supposed to be held on entry. We have already made sure 2710 * that there is sufficient amount of request entries to not drop it. 2711 */ 2712 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2713 { 2714 int cnt; 2715 struct dsd64 *cur_dsd; 2716 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2717 2718 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2719 2720 /* Setup packet address segment pointer */ 2721 cur_dsd = &pkt24->u.status0.dsd; 2722 2723 /* Set total data segment count */ 2724 if (prm->seg_cnt) 2725 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2726 2727 if (prm->seg_cnt == 0) { 2728 /* No data transfer */ 2729 cur_dsd->address = 0; 2730 cur_dsd->length = 0; 2731 return; 2732 } 2733 2734 /* If scatter gather */ 2735 2736 /* Load command entry data segments */ 2737 for (cnt = 0; 2738 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2739 cnt++, prm->seg_cnt--) { 2740 append_dsd64(&cur_dsd, prm->sg); 2741 prm->sg = sg_next(prm->sg); 2742 } 2743 2744 qlt_load_cont_data_segments(prm); 2745 } 2746 2747 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2748 { 2749 return cmd->bufflen > 0; 2750 } 2751 2752 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2753 { 2754 struct qla_tgt_cmd *cmd; 2755 struct scsi_qla_host *vha; 2756 2757 /* asc 0x10=dif error */ 2758 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2759 cmd = prm->cmd; 2760 vha = cmd->vha; 2761 /* ASCQ */ 2762 switch (prm->sense_buffer[13]) { 2763 case 1: 2764 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2765 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2766 "se_cmd=%p tag[%x]", 2767 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2768 cmd->atio.u.isp24.exchange_addr); 2769 break; 2770 case 2: 2771 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2772 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2773 "se_cmd=%p tag[%x]", 2774 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2775 cmd->atio.u.isp24.exchange_addr); 2776 break; 2777 case 3: 2778 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2779 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2780 "se_cmd=%p tag[%x]", 2781 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2782 cmd->atio.u.isp24.exchange_addr); 2783 break; 2784 default: 2785 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2786 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2787 "se_cmd=%p tag[%x]", 2788 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2789 cmd->atio.u.isp24.exchange_addr); 2790 break; 2791 } 2792 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2793 } 2794 } 2795 2796 /* 2797 * Called without ha->hardware_lock held 2798 */ 2799 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2800 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2801 uint32_t *full_req_cnt) 2802 { 2803 struct se_cmd *se_cmd = &cmd->se_cmd; 2804 struct qla_qpair *qpair = cmd->qpair; 2805 2806 prm->cmd = cmd; 2807 prm->tgt = cmd->tgt; 2808 prm->pkt = NULL; 2809 prm->rq_result = scsi_status; 2810 prm->sense_buffer = &cmd->sense_buffer[0]; 2811 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2812 prm->sg = NULL; 2813 prm->seg_cnt = -1; 2814 prm->req_cnt = 1; 2815 prm->residual = 0; 2816 prm->add_status_pkt = 0; 2817 prm->prot_sg = NULL; 2818 prm->prot_seg_cnt = 0; 2819 prm->tot_dsds = 0; 2820 2821 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2822 if (qlt_pci_map_calc_cnt(prm) != 0) 2823 return -EAGAIN; 2824 } 2825 2826 *full_req_cnt = prm->req_cnt; 2827 2828 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2829 prm->residual = se_cmd->residual_count; 2830 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2831 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2832 prm->residual, se_cmd->tag, 2833 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2834 cmd->bufflen, prm->rq_result); 2835 prm->rq_result |= SS_RESIDUAL_UNDER; 2836 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2837 prm->residual = se_cmd->residual_count; 2838 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2839 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2840 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2841 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2842 prm->rq_result |= SS_RESIDUAL_OVER; 2843 } 2844 2845 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2846 /* 2847 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2848 * ignored in *xmit_response() below 2849 */ 2850 if (qlt_has_data(cmd)) { 2851 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2852 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2853 (prm->rq_result != 0))) { 2854 prm->add_status_pkt = 1; 2855 (*full_req_cnt)++; 2856 } 2857 } 2858 } 2859 2860 return 0; 2861 } 2862 2863 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2864 int sending_sense) 2865 { 2866 if (cmd->qpair->enable_class_2) 2867 return 0; 2868 2869 if (sending_sense) 2870 return cmd->conf_compl_supported; 2871 else 2872 return cmd->qpair->enable_explicit_conf && 2873 cmd->conf_compl_supported; 2874 } 2875 2876 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2877 struct qla_tgt_prm *prm) 2878 { 2879 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2880 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2881 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2882 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2883 ctio->u.status0.flags |= cpu_to_le16( 2884 CTIO7_FLAGS_EXPLICIT_CONFORM | 2885 CTIO7_FLAGS_CONFORM_REQ); 2886 } 2887 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2888 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2889 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2890 int i; 2891 2892 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2893 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2894 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2895 "Skipping EXPLICIT_CONFORM and " 2896 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2897 "non GOOD status\n"); 2898 goto skip_explict_conf; 2899 } 2900 ctio->u.status1.flags |= cpu_to_le16( 2901 CTIO7_FLAGS_EXPLICIT_CONFORM | 2902 CTIO7_FLAGS_CONFORM_REQ); 2903 } 2904 skip_explict_conf: 2905 ctio->u.status1.flags &= 2906 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2907 ctio->u.status1.flags |= 2908 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2909 ctio->u.status1.scsi_status |= 2910 cpu_to_le16(SS_SENSE_LEN_VALID); 2911 ctio->u.status1.sense_length = 2912 cpu_to_le16(prm->sense_buffer_len); 2913 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2914 uint32_t v; 2915 2916 v = get_unaligned_be32( 2917 &((uint32_t *)prm->sense_buffer)[i]); 2918 put_unaligned_le32(v, 2919 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2920 } 2921 qlt_print_dif_err(prm); 2922 2923 } else { 2924 ctio->u.status1.flags &= 2925 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2926 ctio->u.status1.flags |= 2927 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2928 ctio->u.status1.sense_length = 0; 2929 memset(ctio->u.status1.sense_data, 0, 2930 sizeof(ctio->u.status1.sense_data)); 2931 } 2932 2933 /* Sense with len > 24, is it possible ??? */ 2934 } 2935 2936 static inline int 2937 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2938 { 2939 switch (se_cmd->prot_op) { 2940 case TARGET_PROT_DOUT_INSERT: 2941 case TARGET_PROT_DIN_STRIP: 2942 if (ql2xenablehba_err_chk >= 1) 2943 return 1; 2944 break; 2945 case TARGET_PROT_DOUT_PASS: 2946 case TARGET_PROT_DIN_PASS: 2947 if (ql2xenablehba_err_chk >= 2) 2948 return 1; 2949 break; 2950 case TARGET_PROT_DIN_INSERT: 2951 case TARGET_PROT_DOUT_STRIP: 2952 return 1; 2953 default: 2954 break; 2955 } 2956 return 0; 2957 } 2958 2959 static inline int 2960 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2961 { 2962 switch (se_cmd->prot_op) { 2963 case TARGET_PROT_DIN_INSERT: 2964 case TARGET_PROT_DOUT_INSERT: 2965 case TARGET_PROT_DIN_STRIP: 2966 case TARGET_PROT_DOUT_STRIP: 2967 case TARGET_PROT_DIN_PASS: 2968 case TARGET_PROT_DOUT_PASS: 2969 return 1; 2970 default: 2971 return 0; 2972 } 2973 return 0; 2974 } 2975 2976 /* 2977 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2978 */ 2979 static void 2980 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2981 uint16_t *pfw_prot_opts) 2982 { 2983 struct se_cmd *se_cmd = &cmd->se_cmd; 2984 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2985 scsi_qla_host_t *vha = cmd->tgt->vha; 2986 struct qla_hw_data *ha = vha->hw; 2987 uint32_t t32 = 0; 2988 2989 /* 2990 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2991 * have been immplemented by TCM, before AppTag is avail. 2992 * Look for modesense_handlers[] 2993 */ 2994 ctx->app_tag = 0; 2995 ctx->app_tag_mask[0] = 0x0; 2996 ctx->app_tag_mask[1] = 0x0; 2997 2998 if (IS_PI_UNINIT_CAPABLE(ha)) { 2999 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3000 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3001 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 3002 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3003 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3004 } 3005 3006 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 3007 3008 switch (se_cmd->prot_type) { 3009 case TARGET_DIF_TYPE0_PROT: 3010 /* 3011 * No check for ql2xenablehba_err_chk, as it 3012 * would be an I/O error if hba tag generation 3013 * is not done. 3014 */ 3015 ctx->ref_tag = cpu_to_le32(lba); 3016 /* enable ALL bytes of the ref tag */ 3017 ctx->ref_tag_mask[0] = 0xff; 3018 ctx->ref_tag_mask[1] = 0xff; 3019 ctx->ref_tag_mask[2] = 0xff; 3020 ctx->ref_tag_mask[3] = 0xff; 3021 break; 3022 case TARGET_DIF_TYPE1_PROT: 3023 /* 3024 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3025 * REF tag, and 16 bit app tag. 3026 */ 3027 ctx->ref_tag = cpu_to_le32(lba); 3028 if (!qla_tgt_ref_mask_check(se_cmd) || 3029 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3030 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3031 break; 3032 } 3033 /* enable ALL bytes of the ref tag */ 3034 ctx->ref_tag_mask[0] = 0xff; 3035 ctx->ref_tag_mask[1] = 0xff; 3036 ctx->ref_tag_mask[2] = 0xff; 3037 ctx->ref_tag_mask[3] = 0xff; 3038 break; 3039 case TARGET_DIF_TYPE2_PROT: 3040 /* 3041 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3042 * tag has to match LBA in CDB + N 3043 */ 3044 ctx->ref_tag = cpu_to_le32(lba); 3045 if (!qla_tgt_ref_mask_check(se_cmd) || 3046 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3047 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3048 break; 3049 } 3050 /* enable ALL bytes of the ref tag */ 3051 ctx->ref_tag_mask[0] = 0xff; 3052 ctx->ref_tag_mask[1] = 0xff; 3053 ctx->ref_tag_mask[2] = 0xff; 3054 ctx->ref_tag_mask[3] = 0xff; 3055 break; 3056 case TARGET_DIF_TYPE3_PROT: 3057 /* For TYPE 3 protection: 16 bit GUARD only */ 3058 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3059 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3060 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3061 break; 3062 } 3063 } 3064 3065 static inline int 3066 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3067 { 3068 struct dsd64 *cur_dsd; 3069 uint32_t transfer_length = 0; 3070 uint32_t data_bytes; 3071 uint32_t dif_bytes; 3072 uint8_t bundling = 1; 3073 struct crc_context *crc_ctx_pkt = NULL; 3074 struct qla_hw_data *ha; 3075 struct ctio_crc2_to_fw *pkt; 3076 dma_addr_t crc_ctx_dma; 3077 uint16_t fw_prot_opts = 0; 3078 struct qla_tgt_cmd *cmd = prm->cmd; 3079 struct se_cmd *se_cmd = &cmd->se_cmd; 3080 uint32_t h; 3081 struct atio_from_isp *atio = &prm->cmd->atio; 3082 struct qla_tc_param tc; 3083 uint16_t t16; 3084 scsi_qla_host_t *vha = cmd->vha; 3085 3086 ha = vha->hw; 3087 3088 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3089 prm->pkt = pkt; 3090 memset(pkt, 0, sizeof(*pkt)); 3091 3092 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3093 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3094 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3095 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3096 3097 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3098 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3099 bundling = 0; 3100 3101 /* Compute dif len and adjust data len to incude protection */ 3102 data_bytes = cmd->bufflen; 3103 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3104 3105 switch (se_cmd->prot_op) { 3106 case TARGET_PROT_DIN_INSERT: 3107 case TARGET_PROT_DOUT_STRIP: 3108 transfer_length = data_bytes; 3109 if (cmd->prot_sg_cnt) 3110 data_bytes += dif_bytes; 3111 break; 3112 case TARGET_PROT_DIN_STRIP: 3113 case TARGET_PROT_DOUT_INSERT: 3114 case TARGET_PROT_DIN_PASS: 3115 case TARGET_PROT_DOUT_PASS: 3116 transfer_length = data_bytes + dif_bytes; 3117 break; 3118 default: 3119 BUG(); 3120 break; 3121 } 3122 3123 if (!qlt_hba_err_chk_enabled(se_cmd)) 3124 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3125 /* HBA error checking enabled */ 3126 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3127 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3128 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3129 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3130 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3131 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3132 } 3133 3134 switch (se_cmd->prot_op) { 3135 case TARGET_PROT_DIN_INSERT: 3136 case TARGET_PROT_DOUT_INSERT: 3137 fw_prot_opts |= PO_MODE_DIF_INSERT; 3138 break; 3139 case TARGET_PROT_DIN_STRIP: 3140 case TARGET_PROT_DOUT_STRIP: 3141 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3142 break; 3143 case TARGET_PROT_DIN_PASS: 3144 case TARGET_PROT_DOUT_PASS: 3145 fw_prot_opts |= PO_MODE_DIF_PASS; 3146 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3147 break; 3148 default:/* Normal Request */ 3149 fw_prot_opts |= PO_MODE_DIF_PASS; 3150 break; 3151 } 3152 3153 /* ---- PKT ---- */ 3154 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3155 pkt->entry_type = CTIO_CRC2; 3156 pkt->entry_count = 1; 3157 pkt->vp_index = cmd->vp_idx; 3158 3159 h = qlt_make_handle(qpair); 3160 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3161 /* 3162 * CTIO type 7 from the firmware doesn't provide a way to 3163 * know the initiator's LOOP ID, hence we can't find 3164 * the session and, so, the command. 3165 */ 3166 return -EAGAIN; 3167 } else 3168 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3169 3170 pkt->handle = make_handle(qpair->req->id, h); 3171 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3172 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3173 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3174 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3175 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3176 3177 /* silence compile warning */ 3178 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3179 pkt->ox_id = cpu_to_le16(t16); 3180 3181 t16 = (atio->u.isp24.attr << 9); 3182 pkt->flags |= cpu_to_le16(t16); 3183 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3184 3185 /* Set transfer direction */ 3186 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3187 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3188 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3189 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3190 3191 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3192 /* Fibre channel byte count */ 3193 pkt->transfer_length = cpu_to_le32(transfer_length); 3194 3195 /* ----- CRC context -------- */ 3196 3197 /* Allocate CRC context from global pool */ 3198 crc_ctx_pkt = cmd->ctx = 3199 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3200 3201 if (!crc_ctx_pkt) 3202 goto crc_queuing_error; 3203 3204 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3205 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3206 3207 /* Set handle */ 3208 crc_ctx_pkt->handle = pkt->handle; 3209 3210 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3211 3212 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3213 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3214 3215 if (!bundling) { 3216 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3217 } else { 3218 /* 3219 * Configure Bundling if we need to fetch interlaving 3220 * protection PCI accesses 3221 */ 3222 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3223 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3224 crc_ctx_pkt->u.bundling.dseg_count = 3225 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3226 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3227 } 3228 3229 /* Finish the common fields of CRC pkt */ 3230 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3231 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3232 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3233 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3234 3235 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3236 tc.vha = vha; 3237 tc.blk_sz = cmd->blk_sz; 3238 tc.bufflen = cmd->bufflen; 3239 tc.sg = cmd->sg; 3240 tc.prot_sg = cmd->prot_sg; 3241 tc.ctx = crc_ctx_pkt; 3242 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3243 3244 /* Walks data segments */ 3245 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3246 3247 if (!bundling && prm->prot_seg_cnt) { 3248 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3249 prm->tot_dsds, &tc)) 3250 goto crc_queuing_error; 3251 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3252 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3253 goto crc_queuing_error; 3254 3255 if (bundling && prm->prot_seg_cnt) { 3256 /* Walks dif segments */ 3257 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3258 3259 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3260 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3261 prm->prot_seg_cnt, cmd)) 3262 goto crc_queuing_error; 3263 } 3264 return QLA_SUCCESS; 3265 3266 crc_queuing_error: 3267 /* Cleanup will be performed by the caller */ 3268 qpair->req->outstanding_cmds[h] = NULL; 3269 3270 return QLA_FUNCTION_FAILED; 3271 } 3272 3273 /* 3274 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3275 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3276 */ 3277 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3278 uint8_t scsi_status) 3279 { 3280 struct scsi_qla_host *vha = cmd->vha; 3281 struct qla_qpair *qpair = cmd->qpair; 3282 struct ctio7_to_24xx *pkt; 3283 struct qla_tgt_prm prm; 3284 uint32_t full_req_cnt = 0; 3285 unsigned long flags = 0; 3286 int res; 3287 3288 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3289 (cmd->sess && cmd->sess->deleted)) { 3290 cmd->state = QLA_TGT_STATE_PROCESSED; 3291 return 0; 3292 } 3293 3294 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3295 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3296 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3297 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3298 &cmd->se_cmd, qpair->id); 3299 3300 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3301 &full_req_cnt); 3302 if (unlikely(res != 0)) { 3303 return res; 3304 } 3305 3306 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3307 3308 if (xmit_type == QLA_TGT_XMIT_STATUS) 3309 qpair->tgt_counters.core_qla_snd_status++; 3310 else 3311 qpair->tgt_counters.core_qla_que_buf++; 3312 3313 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3314 /* 3315 * Either the port is not online or this request was from 3316 * previous life, just abort the processing. 3317 */ 3318 cmd->state = QLA_TGT_STATE_PROCESSED; 3319 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3320 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3321 vha->flags.online, qla2x00_reset_active(vha), 3322 cmd->reset_count, qpair->chip_reset); 3323 goto out_unmap_unlock; 3324 } 3325 3326 /* Does F/W have an IOCBs for this request */ 3327 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3328 if (unlikely(res)) 3329 goto out_unmap_unlock; 3330 3331 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3332 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3333 else 3334 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3335 if (unlikely(res != 0)) { 3336 qpair->req->cnt += full_req_cnt; 3337 goto out_unmap_unlock; 3338 } 3339 3340 pkt = (struct ctio7_to_24xx *)prm.pkt; 3341 3342 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3343 pkt->u.status0.flags |= 3344 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3345 CTIO7_FLAGS_STATUS_MODE_0); 3346 3347 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3348 qlt_load_data_segments(&prm); 3349 3350 if (prm.add_status_pkt == 0) { 3351 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3352 pkt->u.status0.scsi_status = 3353 cpu_to_le16(prm.rq_result); 3354 if (!cmd->edif) 3355 pkt->u.status0.residual = 3356 cpu_to_le32(prm.residual); 3357 3358 pkt->u.status0.flags |= cpu_to_le16( 3359 CTIO7_FLAGS_SEND_STATUS); 3360 if (qlt_need_explicit_conf(cmd, 0)) { 3361 pkt->u.status0.flags |= 3362 cpu_to_le16( 3363 CTIO7_FLAGS_EXPLICIT_CONFORM | 3364 CTIO7_FLAGS_CONFORM_REQ); 3365 } 3366 } 3367 3368 } else { 3369 /* 3370 * We have already made sure that there is sufficient 3371 * amount of request entries to not drop HW lock in 3372 * req_pkt(). 3373 */ 3374 struct ctio7_to_24xx *ctio = 3375 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3376 qpair->req); 3377 3378 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3379 "Building additional status packet 0x%p.\n", 3380 ctio); 3381 3382 /* 3383 * T10Dif: ctio_crc2_to_fw overlay ontop of 3384 * ctio7_to_24xx 3385 */ 3386 memcpy(ctio, pkt, sizeof(*ctio)); 3387 /* reset back to CTIO7 */ 3388 ctio->entry_count = 1; 3389 ctio->entry_type = CTIO_TYPE7; 3390 ctio->dseg_count = 0; 3391 ctio->u.status1.flags &= ~cpu_to_le16( 3392 CTIO7_FLAGS_DATA_IN); 3393 3394 /* Real finish is ctio_m1's finish */ 3395 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3396 pkt->u.status0.flags |= cpu_to_le16( 3397 CTIO7_FLAGS_DONT_RET_CTIO); 3398 3399 /* qlt_24xx_init_ctio_to_isp will correct 3400 * all neccessary fields that's part of CTIO7. 3401 * There should be no residual of CTIO-CRC2 data. 3402 */ 3403 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3404 &prm); 3405 } 3406 } else 3407 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3408 3409 3410 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3411 cmd->cmd_sent_to_fw = 1; 3412 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3413 3414 /* Memory Barrier */ 3415 wmb(); 3416 if (qpair->reqq_start_iocbs) 3417 qpair->reqq_start_iocbs(qpair); 3418 else 3419 qla2x00_start_iocbs(vha, qpair->req); 3420 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3421 3422 return 0; 3423 3424 out_unmap_unlock: 3425 qlt_unmap_sg(vha, cmd); 3426 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3427 3428 return res; 3429 } 3430 EXPORT_SYMBOL(qlt_xmit_response); 3431 3432 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3433 { 3434 struct ctio7_to_24xx *pkt; 3435 struct scsi_qla_host *vha = cmd->vha; 3436 struct qla_tgt *tgt = cmd->tgt; 3437 struct qla_tgt_prm prm; 3438 unsigned long flags = 0; 3439 int res = 0; 3440 struct qla_qpair *qpair = cmd->qpair; 3441 3442 memset(&prm, 0, sizeof(prm)); 3443 prm.cmd = cmd; 3444 prm.tgt = tgt; 3445 prm.sg = NULL; 3446 prm.req_cnt = 1; 3447 3448 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3449 (cmd->sess && cmd->sess->deleted)) { 3450 /* 3451 * Either the port is not online or this request was from 3452 * previous life, just abort the processing. 3453 */ 3454 cmd->aborted = 1; 3455 cmd->write_data_transferred = 0; 3456 cmd->state = QLA_TGT_STATE_DATA_IN; 3457 vha->hw->tgt.tgt_ops->handle_data(cmd); 3458 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3459 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3460 vha->flags.online, qla2x00_reset_active(vha), 3461 cmd->reset_count, qpair->chip_reset); 3462 return 0; 3463 } 3464 3465 /* Calculate number of entries and segments required */ 3466 if (qlt_pci_map_calc_cnt(&prm) != 0) 3467 return -EAGAIN; 3468 3469 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3470 /* Does F/W have an IOCBs for this request */ 3471 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3472 if (res != 0) 3473 goto out_unlock_free_unmap; 3474 if (cmd->se_cmd.prot_op) 3475 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3476 else 3477 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3478 3479 if (unlikely(res != 0)) { 3480 qpair->req->cnt += prm.req_cnt; 3481 goto out_unlock_free_unmap; 3482 } 3483 3484 pkt = (struct ctio7_to_24xx *)prm.pkt; 3485 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3486 CTIO7_FLAGS_STATUS_MODE_0); 3487 3488 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3489 qlt_load_data_segments(&prm); 3490 3491 cmd->state = QLA_TGT_STATE_NEED_DATA; 3492 cmd->cmd_sent_to_fw = 1; 3493 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3494 3495 /* Memory Barrier */ 3496 wmb(); 3497 if (qpair->reqq_start_iocbs) 3498 qpair->reqq_start_iocbs(qpair); 3499 else 3500 qla2x00_start_iocbs(vha, qpair->req); 3501 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3502 3503 return res; 3504 3505 out_unlock_free_unmap: 3506 qlt_unmap_sg(vha, cmd); 3507 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3508 3509 return res; 3510 } 3511 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3512 3513 3514 /* 3515 * it is assumed either hardware_lock or qpair lock is held. 3516 */ 3517 static void 3518 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3519 struct ctio_crc_from_fw *sts) 3520 { 3521 uint8_t *ap = &sts->actual_dif[0]; 3522 uint8_t *ep = &sts->expected_dif[0]; 3523 uint64_t lba = cmd->se_cmd.t_task_lba; 3524 uint8_t scsi_status, sense_key, asc, ascq; 3525 unsigned long flags; 3526 struct scsi_qla_host *vha = cmd->vha; 3527 3528 cmd->trc_flags |= TRC_DIF_ERR; 3529 3530 cmd->a_guard = get_unaligned_be16(ap + 0); 3531 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3532 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3533 3534 cmd->e_guard = get_unaligned_be16(ep + 0); 3535 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3536 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3537 3538 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3539 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3540 3541 scsi_status = sense_key = asc = ascq = 0; 3542 3543 /* check appl tag */ 3544 if (cmd->e_app_tag != cmd->a_app_tag) { 3545 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3546 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3547 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3548 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3549 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3550 cmd->atio.u.isp24.fcp_hdr.ox_id); 3551 3552 cmd->dif_err_code = DIF_ERR_APP; 3553 scsi_status = SAM_STAT_CHECK_CONDITION; 3554 sense_key = ABORTED_COMMAND; 3555 asc = 0x10; 3556 ascq = 0x2; 3557 } 3558 3559 /* check ref tag */ 3560 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3561 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3562 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", 3563 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3564 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3565 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3566 cmd->atio.u.isp24.fcp_hdr.ox_id); 3567 3568 cmd->dif_err_code = DIF_ERR_REF; 3569 scsi_status = SAM_STAT_CHECK_CONDITION; 3570 sense_key = ABORTED_COMMAND; 3571 asc = 0x10; 3572 ascq = 0x3; 3573 goto out; 3574 } 3575 3576 /* check guard */ 3577 if (cmd->e_guard != cmd->a_guard) { 3578 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3579 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3580 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3581 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3582 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3583 cmd->atio.u.isp24.fcp_hdr.ox_id); 3584 3585 cmd->dif_err_code = DIF_ERR_GRD; 3586 scsi_status = SAM_STAT_CHECK_CONDITION; 3587 sense_key = ABORTED_COMMAND; 3588 asc = 0x10; 3589 ascq = 0x1; 3590 } 3591 out: 3592 switch (cmd->state) { 3593 case QLA_TGT_STATE_NEED_DATA: 3594 /* handle_data will load DIF error code */ 3595 cmd->state = QLA_TGT_STATE_DATA_IN; 3596 vha->hw->tgt.tgt_ops->handle_data(cmd); 3597 break; 3598 default: 3599 spin_lock_irqsave(&cmd->cmd_lock, flags); 3600 if (cmd->aborted) { 3601 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3602 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3603 break; 3604 } 3605 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3606 3607 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3608 ascq); 3609 /* assume scsi status gets out on the wire. 3610 * Will not wait for completion. 3611 */ 3612 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3613 break; 3614 } 3615 } 3616 3617 /* If hardware_lock held on entry, might drop it, then reaquire */ 3618 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3619 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3620 struct imm_ntfy_from_isp *ntfy) 3621 { 3622 struct nack_to_isp *nack; 3623 struct qla_hw_data *ha = vha->hw; 3624 request_t *pkt; 3625 int ret = 0; 3626 3627 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3628 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3629 3630 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3631 if (pkt == NULL) { 3632 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3633 "qla_target(%d): %s failed: unable to allocate " 3634 "request packet\n", vha->vp_idx, __func__); 3635 return -ENOMEM; 3636 } 3637 3638 pkt->entry_type = NOTIFY_ACK_TYPE; 3639 pkt->entry_count = 1; 3640 pkt->handle = QLA_TGT_SKIP_HANDLE; 3641 3642 nack = (struct nack_to_isp *)pkt; 3643 nack->ox_id = ntfy->ox_id; 3644 3645 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3646 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3647 nack->u.isp24.flags = ntfy->u.isp24.flags & 3648 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3649 } 3650 3651 /* terminate */ 3652 nack->u.isp24.flags |= 3653 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3654 3655 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3656 nack->u.isp24.status = ntfy->u.isp24.status; 3657 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3658 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3659 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3660 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3661 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3662 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3663 3664 qla2x00_start_iocbs(vha, vha->req); 3665 return ret; 3666 } 3667 3668 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3669 struct imm_ntfy_from_isp *imm, int ha_locked) 3670 { 3671 int rc; 3672 3673 WARN_ON_ONCE(!ha_locked); 3674 rc = __qlt_send_term_imm_notif(vha, imm); 3675 pr_debug("rc = %d\n", rc); 3676 } 3677 3678 /* 3679 * If hardware_lock held on entry, might drop it, then reaquire 3680 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3681 */ 3682 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3683 struct qla_tgt_cmd *cmd, 3684 struct atio_from_isp *atio) 3685 { 3686 struct scsi_qla_host *vha = qpair->vha; 3687 struct ctio7_to_24xx *ctio24; 3688 struct qla_hw_data *ha = vha->hw; 3689 request_t *pkt; 3690 int ret = 0; 3691 uint16_t temp; 3692 3693 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3694 3695 if (cmd) 3696 vha = cmd->vha; 3697 3698 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3699 if (pkt == NULL) { 3700 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3701 "qla_target(%d): %s failed: unable to allocate " 3702 "request packet\n", vha->vp_idx, __func__); 3703 return -ENOMEM; 3704 } 3705 3706 if (cmd != NULL) { 3707 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3708 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3709 "qla_target(%d): Terminating cmd %p with " 3710 "incorrect state %d\n", vha->vp_idx, cmd, 3711 cmd->state); 3712 } else 3713 ret = 1; 3714 } 3715 3716 qpair->tgt_counters.num_term_xchg_sent++; 3717 pkt->entry_count = 1; 3718 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3719 3720 ctio24 = (struct ctio7_to_24xx *)pkt; 3721 ctio24->entry_type = CTIO_TYPE7; 3722 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3723 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3724 ctio24->vp_index = vha->vp_idx; 3725 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3726 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3727 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3728 CTIO7_FLAGS_TERMINATE; 3729 ctio24->u.status1.flags = cpu_to_le16(temp); 3730 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3731 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3732 3733 /* Memory Barrier */ 3734 wmb(); 3735 if (qpair->reqq_start_iocbs) 3736 qpair->reqq_start_iocbs(qpair); 3737 else 3738 qla2x00_start_iocbs(vha, qpair->req); 3739 return ret; 3740 } 3741 3742 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3743 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3744 int ul_abort) 3745 { 3746 struct scsi_qla_host *vha; 3747 unsigned long flags = 0; 3748 int rc; 3749 3750 /* why use different vha? NPIV */ 3751 if (cmd) 3752 vha = cmd->vha; 3753 else 3754 vha = qpair->vha; 3755 3756 if (ha_locked) { 3757 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3758 if (rc == -ENOMEM) 3759 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3760 goto done; 3761 } 3762 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3763 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3764 if (rc == -ENOMEM) 3765 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3766 3767 done: 3768 if (cmd && !ul_abort && !cmd->aborted) { 3769 if (cmd->sg_mapped) 3770 qlt_unmap_sg(vha, cmd); 3771 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3772 } 3773 3774 if (!ha_locked) 3775 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3776 3777 return; 3778 } 3779 3780 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3781 { 3782 struct list_head free_list; 3783 struct qla_tgt_cmd *cmd, *tcmd; 3784 3785 vha->hw->tgt.leak_exchg_thresh_hold = 3786 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3787 3788 cmd = tcmd = NULL; 3789 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3790 INIT_LIST_HEAD(&free_list); 3791 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3792 3793 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3794 list_del(&cmd->cmd_list); 3795 /* This cmd was never sent to TCM. There is no need 3796 * to schedule free or call free_cmd 3797 */ 3798 qlt_free_cmd(cmd); 3799 vha->hw->tgt.num_qfull_cmds_alloc--; 3800 } 3801 } 3802 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3803 } 3804 3805 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3806 { 3807 uint32_t total_leaked; 3808 3809 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3810 3811 if (vha->hw->tgt.leak_exchg_thresh_hold && 3812 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3813 3814 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3815 "Chip reset due to exchange starvation: %d/%d.\n", 3816 total_leaked, vha->hw->cur_fw_xcb_count); 3817 3818 if (IS_P3P_TYPE(vha->hw)) 3819 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3820 else 3821 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3822 qla2xxx_wake_dpc(vha); 3823 } 3824 3825 } 3826 3827 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3828 { 3829 struct qla_tgt *tgt = cmd->tgt; 3830 struct scsi_qla_host *vha = tgt->vha; 3831 struct se_cmd *se_cmd = &cmd->se_cmd; 3832 unsigned long flags; 3833 3834 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3835 "qla_target(%d): terminating exchange for aborted cmd=%p " 3836 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3837 se_cmd->tag); 3838 3839 spin_lock_irqsave(&cmd->cmd_lock, flags); 3840 if (cmd->aborted) { 3841 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3842 /* 3843 * It's normal to see 2 calls in this path: 3844 * 1) XFER Rdy completion + CMD_T_ABORT 3845 * 2) TCM TMR - drain_state_list 3846 */ 3847 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3848 "multiple abort. %p transport_state %x, t_state %x, " 3849 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3850 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3851 return -EIO; 3852 } 3853 cmd->aborted = 1; 3854 cmd->trc_flags |= TRC_ABORT; 3855 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3856 3857 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3858 return 0; 3859 } 3860 EXPORT_SYMBOL(qlt_abort_cmd); 3861 3862 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3863 { 3864 struct fc_port *sess = cmd->sess; 3865 3866 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3867 "%s: se_cmd[%p] ox_id %04x\n", 3868 __func__, &cmd->se_cmd, 3869 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3870 3871 BUG_ON(cmd->cmd_in_wq); 3872 3873 if (!cmd->q_full) 3874 qlt_decr_num_pend_cmds(cmd->vha); 3875 3876 BUG_ON(cmd->sg_mapped); 3877 cmd->jiffies_at_free = get_jiffies_64(); 3878 if (unlikely(cmd->free_sg)) 3879 kfree(cmd->sg); 3880 3881 if (!sess || !sess->se_sess) { 3882 WARN_ON(1); 3883 return; 3884 } 3885 cmd->jiffies_at_free = get_jiffies_64(); 3886 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3887 } 3888 EXPORT_SYMBOL(qlt_free_cmd); 3889 3890 /* 3891 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3892 */ 3893 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3894 struct qla_tgt_cmd *cmd, uint32_t status) 3895 { 3896 int term = 0; 3897 struct scsi_qla_host *vha = qpair->vha; 3898 3899 if (cmd->se_cmd.prot_op) 3900 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3901 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3902 "se_cmd=%p tag[%x] op %#x/%s", 3903 cmd->lba, cmd->lba, 3904 cmd->num_blks, &cmd->se_cmd, 3905 cmd->atio.u.isp24.exchange_addr, 3906 cmd->se_cmd.prot_op, 3907 prot_op_str(cmd->se_cmd.prot_op)); 3908 3909 if (ctio != NULL) { 3910 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3911 3912 term = !(c->flags & 3913 cpu_to_le16(OF_TERM_EXCH)); 3914 } else 3915 term = 1; 3916 3917 if (term) 3918 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3919 3920 return term; 3921 } 3922 3923 3924 /* ha->hardware_lock supposed to be held on entry */ 3925 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3926 struct rsp_que *rsp, uint32_t handle, void *ctio) 3927 { 3928 void *cmd = NULL; 3929 struct req_que *req; 3930 int qid = GET_QID(handle); 3931 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3932 3933 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3934 return NULL; 3935 3936 if (qid == rsp->req->id) { 3937 req = rsp->req; 3938 } else if (vha->hw->req_q_map[qid]) { 3939 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3940 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3941 vha->vp_idx, rsp->id, handle); 3942 req = vha->hw->req_q_map[qid]; 3943 } else { 3944 return NULL; 3945 } 3946 3947 h &= QLA_CMD_HANDLE_MASK; 3948 3949 if (h != QLA_TGT_NULL_HANDLE) { 3950 if (unlikely(h >= req->num_outstanding_cmds)) { 3951 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3952 "qla_target(%d): Wrong handle %x received\n", 3953 vha->vp_idx, handle); 3954 return NULL; 3955 } 3956 3957 cmd = req->outstanding_cmds[h]; 3958 if (unlikely(cmd == NULL)) { 3959 ql_dbg(ql_dbg_async, vha, 0xe053, 3960 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3961 vha->vp_idx, handle, req->id, rsp->id); 3962 return NULL; 3963 } 3964 req->outstanding_cmds[h] = NULL; 3965 } else if (ctio != NULL) { 3966 /* We can't get loop ID from CTIO7 */ 3967 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3968 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3969 "support NULL handles\n", vha->vp_idx); 3970 return NULL; 3971 } 3972 3973 return cmd; 3974 } 3975 3976 /* 3977 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3978 */ 3979 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3980 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3981 { 3982 struct qla_hw_data *ha = vha->hw; 3983 struct se_cmd *se_cmd; 3984 struct qla_tgt_cmd *cmd; 3985 struct qla_qpair *qpair = rsp->qpair; 3986 3987 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3988 /* That could happen only in case of an error/reset/abort */ 3989 if (status != CTIO_SUCCESS) { 3990 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3991 "Intermediate CTIO received" 3992 " (status %x)\n", status); 3993 } 3994 return; 3995 } 3996 3997 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3998 if (cmd == NULL) 3999 return; 4000 4001 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 4002 cmd->sess) { 4003 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 4004 (struct ctio7_from_24xx *)ctio); 4005 } 4006 4007 se_cmd = &cmd->se_cmd; 4008 cmd->cmd_sent_to_fw = 0; 4009 4010 qlt_unmap_sg(vha, cmd); 4011 4012 if (unlikely(status != CTIO_SUCCESS)) { 4013 switch (status & 0xFFFF) { 4014 case CTIO_INVALID_RX_ID: 4015 if (printk_ratelimit()) 4016 dev_info(&vha->hw->pdev->dev, 4017 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4018 vha->vp_idx, cmd->atio.u.isp24.attr, 4019 ((cmd->ctio_flags >> 9) & 0xf), 4020 cmd->ctio_flags); 4021 4022 break; 4023 case CTIO_LIP_RESET: 4024 case CTIO_TARGET_RESET: 4025 case CTIO_ABORTED: 4026 /* driver request abort via Terminate exchange */ 4027 case CTIO_TIMEOUT: 4028 /* They are OK */ 4029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4030 "qla_target(%d): CTIO with " 4031 "status %#x received, state %x, se_cmd %p, " 4032 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4033 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4034 status, cmd->state, se_cmd); 4035 break; 4036 4037 case CTIO_PORT_LOGGED_OUT: 4038 case CTIO_PORT_UNAVAILABLE: 4039 { 4040 int logged_out = 4041 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4042 4043 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4044 "qla_target(%d): CTIO with %s status %x " 4045 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4046 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4047 status, cmd->state, se_cmd); 4048 4049 if (logged_out && cmd->sess) { 4050 /* 4051 * Session is already logged out, but we need 4052 * to notify initiator, who's not aware of this 4053 */ 4054 cmd->sess->send_els_logo = 1; 4055 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4056 "%s %d %8phC post del sess\n", 4057 __func__, __LINE__, cmd->sess->port_name); 4058 4059 qlt_schedule_sess_for_deletion(cmd->sess); 4060 } 4061 break; 4062 } 4063 case CTIO_DIF_ERROR: { 4064 struct ctio_crc_from_fw *crc = 4065 (struct ctio_crc_from_fw *)ctio; 4066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4067 "qla_target(%d): CTIO with DIF_ERROR status %x " 4068 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4069 "expect_dif[0x%llx]\n", 4070 vha->vp_idx, status, cmd->state, se_cmd, 4071 *((u64 *)&crc->actual_dif[0]), 4072 *((u64 *)&crc->expected_dif[0])); 4073 4074 qlt_handle_dif_error(qpair, cmd, ctio); 4075 return; 4076 } 4077 4078 case CTIO_FAST_AUTH_ERR: 4079 case CTIO_FAST_INCOMP_PAD_LEN: 4080 case CTIO_FAST_INVALID_REQ: 4081 case CTIO_FAST_SPI_ERR: 4082 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4083 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4084 vha->vp_idx, status, cmd->state, se_cmd); 4085 break; 4086 4087 default: 4088 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4089 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4090 vha->vp_idx, status, cmd->state, se_cmd); 4091 break; 4092 } 4093 4094 4095 /* "cmd->aborted" means 4096 * cmd is already aborted/terminated, we don't 4097 * need to terminate again. The exchange is already 4098 * cleaned up/freed at FW level. Just cleanup at driver 4099 * level. 4100 */ 4101 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4102 (!cmd->aborted)) { 4103 cmd->trc_flags |= TRC_CTIO_ERR; 4104 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4105 return; 4106 } 4107 } 4108 4109 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4110 cmd->trc_flags |= TRC_CTIO_DONE; 4111 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4112 cmd->state = QLA_TGT_STATE_DATA_IN; 4113 4114 if (status == CTIO_SUCCESS) 4115 cmd->write_data_transferred = 1; 4116 4117 ha->tgt.tgt_ops->handle_data(cmd); 4118 return; 4119 } else if (cmd->aborted) { 4120 cmd->trc_flags |= TRC_CTIO_ABORTED; 4121 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4122 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4123 } else { 4124 cmd->trc_flags |= TRC_CTIO_STRANGE; 4125 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4126 "qla_target(%d): A command in state (%d) should " 4127 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4128 } 4129 4130 if (unlikely(status != CTIO_SUCCESS) && 4131 !cmd->aborted) { 4132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4133 dump_stack(); 4134 } 4135 4136 ha->tgt.tgt_ops->free_cmd(cmd); 4137 } 4138 4139 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4140 uint8_t task_codes) 4141 { 4142 int fcp_task_attr; 4143 4144 switch (task_codes) { 4145 case ATIO_SIMPLE_QUEUE: 4146 fcp_task_attr = TCM_SIMPLE_TAG; 4147 break; 4148 case ATIO_HEAD_OF_QUEUE: 4149 fcp_task_attr = TCM_HEAD_TAG; 4150 break; 4151 case ATIO_ORDERED_QUEUE: 4152 fcp_task_attr = TCM_ORDERED_TAG; 4153 break; 4154 case ATIO_ACA_QUEUE: 4155 fcp_task_attr = TCM_ACA_TAG; 4156 break; 4157 case ATIO_UNTAGGED: 4158 fcp_task_attr = TCM_SIMPLE_TAG; 4159 break; 4160 default: 4161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4162 "qla_target: unknown task code %x, use ORDERED instead\n", 4163 task_codes); 4164 fcp_task_attr = TCM_ORDERED_TAG; 4165 break; 4166 } 4167 4168 return fcp_task_attr; 4169 } 4170 4171 /* 4172 * Process context for I/O path into tcm_qla2xxx code 4173 */ 4174 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4175 { 4176 scsi_qla_host_t *vha = cmd->vha; 4177 struct qla_hw_data *ha = vha->hw; 4178 struct fc_port *sess = cmd->sess; 4179 struct atio_from_isp *atio = &cmd->atio; 4180 unsigned char *cdb; 4181 unsigned long flags; 4182 uint32_t data_length; 4183 int ret, fcp_task_attr, data_dir, bidi = 0; 4184 struct qla_qpair *qpair = cmd->qpair; 4185 4186 cmd->cmd_in_wq = 0; 4187 cmd->trc_flags |= TRC_DO_WORK; 4188 4189 if (cmd->aborted) { 4190 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4191 "cmd with tag %u is aborted\n", 4192 cmd->atio.u.isp24.exchange_addr); 4193 goto out_term; 4194 } 4195 4196 spin_lock_init(&cmd->cmd_lock); 4197 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4198 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4199 4200 if (atio->u.isp24.fcp_cmnd.rddata && 4201 atio->u.isp24.fcp_cmnd.wrdata) { 4202 bidi = 1; 4203 data_dir = DMA_TO_DEVICE; 4204 } else if (atio->u.isp24.fcp_cmnd.rddata) 4205 data_dir = DMA_FROM_DEVICE; 4206 else if (atio->u.isp24.fcp_cmnd.wrdata) 4207 data_dir = DMA_TO_DEVICE; 4208 else 4209 data_dir = DMA_NONE; 4210 4211 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4212 atio->u.isp24.fcp_cmnd.task_attr); 4213 data_length = get_datalen_for_atio(atio); 4214 4215 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4216 fcp_task_attr, data_dir, bidi); 4217 if (ret != 0) 4218 goto out_term; 4219 /* 4220 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4221 */ 4222 ha->tgt.tgt_ops->put_sess(sess); 4223 return; 4224 4225 out_term: 4226 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4227 /* 4228 * cmd has not sent to target yet, so pass NULL as the second 4229 * argument to qlt_send_term_exchange() and free the memory here. 4230 */ 4231 cmd->trc_flags |= TRC_DO_WORK_ERR; 4232 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4233 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4234 4235 qlt_decr_num_pend_cmds(vha); 4236 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4237 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4238 4239 ha->tgt.tgt_ops->put_sess(sess); 4240 } 4241 4242 static void qlt_do_work(struct work_struct *work) 4243 { 4244 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4245 scsi_qla_host_t *vha = cmd->vha; 4246 unsigned long flags; 4247 4248 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4249 list_del(&cmd->cmd_list); 4250 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4251 4252 __qlt_do_work(cmd); 4253 } 4254 4255 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4256 { 4257 unsigned long flags; 4258 struct qla_hw_data *ha = vha->hw; 4259 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4260 void *node; 4261 u64 key = 0; 4262 4263 ql_log(ql_log_info, vha, 0x706c, 4264 "User update Number of Active Qpairs %d\n", 4265 ha->tgt.num_act_qpairs); 4266 4267 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4268 4269 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4270 btree_remove64(&tgt->lun_qpair_map, key); 4271 4272 ha->base_qpair->lun_cnt = 0; 4273 for (key = 0; key < ha->max_qpairs; key++) 4274 if (ha->queue_pair_map[key]) 4275 ha->queue_pair_map[key]->lun_cnt = 0; 4276 4277 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4278 } 4279 4280 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4281 struct qla_tgt_cmd *cmd) 4282 { 4283 struct qla_qpair *qpair, *qp; 4284 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4285 struct qla_qpair_hint *h; 4286 4287 if (vha->flags.qpairs_available) { 4288 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4289 if (unlikely(!h)) { 4290 /* spread lun to qpair ratio evently */ 4291 int lcnt = 0, rc; 4292 struct scsi_qla_host *base_vha = 4293 pci_get_drvdata(vha->hw->pdev); 4294 4295 qpair = vha->hw->base_qpair; 4296 if (qpair->lun_cnt == 0) { 4297 qpair->lun_cnt++; 4298 h = qla_qpair_to_hint(tgt, qpair); 4299 BUG_ON(!h); 4300 rc = btree_insert64(&tgt->lun_qpair_map, 4301 cmd->unpacked_lun, h, GFP_ATOMIC); 4302 if (rc) { 4303 qpair->lun_cnt--; 4304 ql_log(ql_log_info, vha, 0xd037, 4305 "Unable to insert lun %llx into lun_qpair_map\n", 4306 cmd->unpacked_lun); 4307 } 4308 goto out; 4309 } else { 4310 lcnt = qpair->lun_cnt; 4311 } 4312 4313 h = NULL; 4314 list_for_each_entry(qp, &base_vha->qp_list, 4315 qp_list_elem) { 4316 if (qp->lun_cnt == 0) { 4317 qp->lun_cnt++; 4318 h = qla_qpair_to_hint(tgt, qp); 4319 BUG_ON(!h); 4320 rc = btree_insert64(&tgt->lun_qpair_map, 4321 cmd->unpacked_lun, h, GFP_ATOMIC); 4322 if (rc) { 4323 qp->lun_cnt--; 4324 ql_log(ql_log_info, vha, 0xd038, 4325 "Unable to insert lun %llx into lun_qpair_map\n", 4326 cmd->unpacked_lun); 4327 } 4328 qpair = qp; 4329 goto out; 4330 } else { 4331 if (qp->lun_cnt < lcnt) { 4332 lcnt = qp->lun_cnt; 4333 qpair = qp; 4334 continue; 4335 } 4336 } 4337 } 4338 BUG_ON(!qpair); 4339 qpair->lun_cnt++; 4340 h = qla_qpair_to_hint(tgt, qpair); 4341 BUG_ON(!h); 4342 rc = btree_insert64(&tgt->lun_qpair_map, 4343 cmd->unpacked_lun, h, GFP_ATOMIC); 4344 if (rc) { 4345 qpair->lun_cnt--; 4346 ql_log(ql_log_info, vha, 0xd039, 4347 "Unable to insert lun %llx into lun_qpair_map\n", 4348 cmd->unpacked_lun); 4349 } 4350 } 4351 } else { 4352 h = &tgt->qphints[0]; 4353 } 4354 out: 4355 cmd->qpair = h->qpair; 4356 cmd->se_cmd.cpuid = h->cpuid; 4357 } 4358 4359 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4360 struct fc_port *sess, 4361 struct atio_from_isp *atio) 4362 { 4363 struct qla_tgt_cmd *cmd; 4364 4365 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4366 if (!cmd) 4367 return NULL; 4368 4369 cmd->cmd_type = TYPE_TGT_CMD; 4370 memcpy(&cmd->atio, atio, sizeof(*atio)); 4371 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4372 cmd->state = QLA_TGT_STATE_NEW; 4373 cmd->tgt = vha->vha_tgt.qla_tgt; 4374 qlt_incr_num_pend_cmds(vha); 4375 cmd->vha = vha; 4376 cmd->sess = sess; 4377 cmd->loop_id = sess->loop_id; 4378 cmd->conf_compl_supported = sess->conf_compl_supported; 4379 4380 cmd->trc_flags = 0; 4381 cmd->jiffies_at_alloc = get_jiffies_64(); 4382 4383 cmd->unpacked_lun = scsilun_to_int( 4384 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4385 qlt_assign_qpair(vha, cmd); 4386 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4387 cmd->vp_idx = vha->vp_idx; 4388 cmd->edif = sess->edif.enable; 4389 4390 return cmd; 4391 } 4392 4393 /* ha->hardware_lock supposed to be held on entry */ 4394 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4395 struct atio_from_isp *atio) 4396 { 4397 struct qla_hw_data *ha = vha->hw; 4398 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4399 struct fc_port *sess; 4400 struct qla_tgt_cmd *cmd; 4401 unsigned long flags; 4402 port_id_t id; 4403 4404 if (unlikely(tgt->tgt_stop)) { 4405 ql_dbg(ql_dbg_io, vha, 0x3061, 4406 "New command while device %p is shutting down\n", tgt); 4407 return -ENODEV; 4408 } 4409 4410 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4411 if (IS_SW_RESV_ADDR(id)) 4412 return -EBUSY; 4413 4414 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4415 if (unlikely(!sess)) 4416 return -EFAULT; 4417 4418 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4419 * session deletion, but it's still in sess_del_work wq */ 4420 if (sess->deleted) { 4421 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4422 "New command while old session %p is being deleted\n", 4423 sess); 4424 return -EFAULT; 4425 } 4426 4427 /* 4428 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4429 */ 4430 if (!kref_get_unless_zero(&sess->sess_kref)) { 4431 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4432 "%s: kref_get fail, %8phC oxid %x \n", 4433 __func__, sess->port_name, 4434 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4435 return -EFAULT; 4436 } 4437 4438 cmd = qlt_get_tag(vha, sess, atio); 4439 if (!cmd) { 4440 ql_dbg(ql_dbg_io, vha, 0x3062, 4441 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4442 ha->tgt.tgt_ops->put_sess(sess); 4443 return -EBUSY; 4444 } 4445 4446 cmd->cmd_in_wq = 1; 4447 cmd->trc_flags |= TRC_NEW_CMD; 4448 4449 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4450 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4451 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4452 4453 INIT_WORK(&cmd->work, qlt_do_work); 4454 if (vha->flags.qpairs_available) { 4455 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4456 } else if (ha->msix_count) { 4457 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4458 queue_work_on(smp_processor_id(), qla_tgt_wq, 4459 &cmd->work); 4460 else 4461 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4462 &cmd->work); 4463 } else { 4464 queue_work(qla_tgt_wq, &cmd->work); 4465 } 4466 4467 return 0; 4468 } 4469 4470 /* ha->hardware_lock supposed to be held on entry */ 4471 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4472 int fn, void *iocb, int flags) 4473 { 4474 struct scsi_qla_host *vha = sess->vha; 4475 struct qla_hw_data *ha = vha->hw; 4476 struct qla_tgt_mgmt_cmd *mcmd; 4477 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4478 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4479 4480 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4481 if (!mcmd) { 4482 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4483 "qla_target(%d): Allocation of management " 4484 "command failed, some commands and their data could " 4485 "leak\n", vha->vp_idx); 4486 return -ENOMEM; 4487 } 4488 memset(mcmd, 0, sizeof(*mcmd)); 4489 mcmd->sess = sess; 4490 4491 if (iocb) { 4492 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4493 sizeof(mcmd->orig_iocb.imm_ntfy)); 4494 } 4495 mcmd->tmr_func = fn; 4496 mcmd->flags = flags; 4497 mcmd->reset_count = ha->base_qpair->chip_reset; 4498 mcmd->qpair = h->qpair; 4499 mcmd->vha = vha; 4500 mcmd->se_cmd.cpuid = h->cpuid; 4501 mcmd->unpacked_lun = lun; 4502 4503 switch (fn) { 4504 case QLA_TGT_LUN_RESET: 4505 case QLA_TGT_CLEAR_TS: 4506 case QLA_TGT_ABORT_TS: 4507 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4508 fallthrough; 4509 case QLA_TGT_CLEAR_ACA: 4510 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4511 mcmd->qpair = h->qpair; 4512 mcmd->se_cmd.cpuid = h->cpuid; 4513 break; 4514 4515 case QLA_TGT_TARGET_RESET: 4516 case QLA_TGT_NEXUS_LOSS_SESS: 4517 case QLA_TGT_NEXUS_LOSS: 4518 case QLA_TGT_ABORT_ALL: 4519 default: 4520 /* no-op */ 4521 break; 4522 } 4523 4524 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4525 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4526 &mcmd->work); 4527 4528 return 0; 4529 } 4530 4531 /* ha->hardware_lock supposed to be held on entry */ 4532 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4533 { 4534 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4535 struct qla_hw_data *ha = vha->hw; 4536 struct fc_port *sess; 4537 u64 unpacked_lun; 4538 int fn; 4539 unsigned long flags; 4540 4541 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4542 4543 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4544 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4545 a->u.isp24.fcp_hdr.s_id); 4546 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4547 4548 unpacked_lun = 4549 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4550 4551 if (sess == NULL || sess->deleted) 4552 return -EFAULT; 4553 4554 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4555 } 4556 4557 /* ha->hardware_lock supposed to be held on entry */ 4558 static int __qlt_abort_task(struct scsi_qla_host *vha, 4559 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4560 { 4561 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4562 struct qla_hw_data *ha = vha->hw; 4563 struct qla_tgt_mgmt_cmd *mcmd; 4564 u64 unpacked_lun; 4565 int rc; 4566 4567 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4568 if (mcmd == NULL) { 4569 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4570 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4571 vha->vp_idx, __func__); 4572 return -ENOMEM; 4573 } 4574 memset(mcmd, 0, sizeof(*mcmd)); 4575 4576 mcmd->sess = sess; 4577 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4578 sizeof(mcmd->orig_iocb.imm_ntfy)); 4579 4580 unpacked_lun = 4581 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4582 mcmd->reset_count = ha->base_qpair->chip_reset; 4583 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4584 mcmd->qpair = ha->base_qpair; 4585 4586 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4587 le16_to_cpu(iocb->u.isp2x.seq_id)); 4588 if (rc != 0) { 4589 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4590 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4591 vha->vp_idx, rc); 4592 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4593 return -EFAULT; 4594 } 4595 4596 return 0; 4597 } 4598 4599 /* ha->hardware_lock supposed to be held on entry */ 4600 static int qlt_abort_task(struct scsi_qla_host *vha, 4601 struct imm_ntfy_from_isp *iocb) 4602 { 4603 struct qla_hw_data *ha = vha->hw; 4604 struct fc_port *sess; 4605 int loop_id; 4606 unsigned long flags; 4607 4608 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4609 4610 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4611 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4612 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4613 4614 if (sess == NULL) { 4615 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4616 "qla_target(%d): task abort for unexisting " 4617 "session\n", vha->vp_idx); 4618 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4619 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4620 } 4621 4622 return __qlt_abort_task(vha, iocb, sess); 4623 } 4624 4625 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4626 { 4627 if (rc != MBS_COMMAND_COMPLETE) { 4628 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4629 "%s: se_sess %p / sess %p from" 4630 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4631 " LOGO failed: %#x\n", 4632 __func__, 4633 fcport->se_sess, 4634 fcport, 4635 fcport->port_name, fcport->loop_id, 4636 fcport->d_id.b.domain, fcport->d_id.b.area, 4637 fcport->d_id.b.al_pa, rc); 4638 } 4639 4640 fcport->logout_completed = 1; 4641 } 4642 4643 /* 4644 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4645 * 4646 * Schedules sessions with matching port_id/loop_id but different wwn for 4647 * deletion. Returns existing session with matching wwn if present. 4648 * Null otherwise. 4649 */ 4650 struct fc_port * 4651 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4652 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4653 { 4654 struct fc_port *sess = NULL, *other_sess; 4655 uint64_t other_wwn; 4656 4657 *conflict_sess = NULL; 4658 4659 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4660 4661 other_wwn = wwn_to_u64(other_sess->port_name); 4662 4663 if (wwn == other_wwn) { 4664 WARN_ON(sess); 4665 sess = other_sess; 4666 continue; 4667 } 4668 4669 /* find other sess with nport_id collision */ 4670 if (port_id.b24 == other_sess->d_id.b24) { 4671 if (loop_id != other_sess->loop_id) { 4672 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4673 "Invalidating sess %p loop_id %d wwn %llx.\n", 4674 other_sess, other_sess->loop_id, other_wwn); 4675 4676 /* 4677 * logout_on_delete is set by default, but another 4678 * session that has the same s_id/loop_id combo 4679 * might have cleared it when requested this session 4680 * deletion, so don't touch it 4681 */ 4682 qlt_schedule_sess_for_deletion(other_sess); 4683 } else { 4684 /* 4685 * Another wwn used to have our s_id/loop_id 4686 * kill the session, but don't free the loop_id 4687 */ 4688 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4689 "Invalidating sess %p loop_id %d wwn %llx.\n", 4690 other_sess, other_sess->loop_id, other_wwn); 4691 4692 other_sess->keep_nport_handle = 1; 4693 if (other_sess->disc_state != DSC_DELETED) 4694 *conflict_sess = other_sess; 4695 qlt_schedule_sess_for_deletion(other_sess); 4696 } 4697 continue; 4698 } 4699 4700 /* find other sess with nport handle collision */ 4701 if ((loop_id == other_sess->loop_id) && 4702 (loop_id != FC_NO_LOOP_ID)) { 4703 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4704 "Invalidating sess %p loop_id %d wwn %llx.\n", 4705 other_sess, other_sess->loop_id, other_wwn); 4706 4707 /* Same loop_id but different s_id 4708 * Ok to kill and logout */ 4709 qlt_schedule_sess_for_deletion(other_sess); 4710 } 4711 } 4712 4713 return sess; 4714 } 4715 4716 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4717 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4718 { 4719 struct qla_tgt_sess_op *op; 4720 struct qla_tgt_cmd *cmd; 4721 uint32_t key; 4722 int count = 0; 4723 unsigned long flags; 4724 4725 key = (((u32)s_id->b.domain << 16) | 4726 ((u32)s_id->b.area << 8) | 4727 ((u32)s_id->b.al_pa)); 4728 4729 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4730 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4731 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4732 4733 if (op_key == key) { 4734 op->aborted = true; 4735 count++; 4736 } 4737 } 4738 4739 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4740 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4741 4742 if (op_key == key) { 4743 op->aborted = true; 4744 count++; 4745 } 4746 } 4747 4748 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4749 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4750 4751 if (cmd_key == key) { 4752 cmd->aborted = 1; 4753 count++; 4754 } 4755 } 4756 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4757 4758 return count; 4759 } 4760 4761 static int qlt_handle_login(struct scsi_qla_host *vha, 4762 struct imm_ntfy_from_isp *iocb) 4763 { 4764 struct fc_port *sess = NULL, *conflict_sess = NULL; 4765 uint64_t wwn; 4766 port_id_t port_id; 4767 uint16_t loop_id, wd3_lo; 4768 int res = 0; 4769 struct qlt_plogi_ack_t *pla; 4770 unsigned long flags; 4771 4772 lockdep_assert_held(&vha->hw->hardware_lock); 4773 4774 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4775 4776 port_id.b.domain = iocb->u.isp24.port_id[2]; 4777 port_id.b.area = iocb->u.isp24.port_id[1]; 4778 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4779 port_id.b.rsvd_1 = 0; 4780 4781 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4782 4783 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4784 abort_cmds_for_s_id(vha, &port_id); 4785 4786 if (wwn) { 4787 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4788 sess = qlt_find_sess_invalidate_other(vha, wwn, 4789 port_id, loop_id, &conflict_sess); 4790 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4791 } else { 4792 ql_dbg(ql_dbg_disc, vha, 0xffff, 4793 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4794 __func__, __LINE__, loop_id, port_id.b24); 4795 qlt_send_term_imm_notif(vha, iocb, 1); 4796 goto out; 4797 } 4798 4799 if (IS_SW_RESV_ADDR(port_id)) { 4800 res = 1; 4801 goto out; 4802 } 4803 4804 if (vha->hw->flags.edif_enabled && 4805 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4806 iocb->u.isp24.status_subcode == ELS_PLOGI && 4807 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4808 ql_dbg(ql_dbg_disc, vha, 0xffff, 4809 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4810 __func__, __LINE__, loop_id, port_id.b24); 4811 qlt_send_term_imm_notif(vha, iocb, 1); 4812 goto out; 4813 } 4814 4815 if (vha->hw->flags.edif_enabled) { 4816 if (DBELL_INACTIVE(vha)) { 4817 ql_dbg(ql_dbg_disc, vha, 0xffff, 4818 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4819 __func__, __LINE__, loop_id, port_id.b24); 4820 qlt_send_term_imm_notif(vha, iocb, 1); 4821 goto out; 4822 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4823 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4824 ql_dbg(ql_dbg_disc, vha, 0xffff, 4825 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4826 __func__, __LINE__, loop_id, port_id.b24); 4827 qlt_send_term_imm_notif(vha, iocb, 1); 4828 goto out; 4829 } 4830 } 4831 4832 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4833 if (!pla) { 4834 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4835 "%s %d %8phC Term INOT due to mem alloc fail", 4836 __func__, __LINE__, 4837 iocb->u.isp24.port_name); 4838 qlt_send_term_imm_notif(vha, iocb, 1); 4839 goto out; 4840 } 4841 4842 if (conflict_sess) { 4843 conflict_sess->login_gen++; 4844 qlt_plogi_ack_link(vha, pla, conflict_sess, 4845 QLT_PLOGI_LINK_CONFLICT); 4846 } 4847 4848 if (!sess) { 4849 pla->ref_count++; 4850 ql_dbg(ql_dbg_disc, vha, 0xffff, 4851 "%s %d %8phC post new sess\n", 4852 __func__, __LINE__, iocb->u.isp24.port_name); 4853 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4854 qla24xx_post_newsess_work(vha, &port_id, 4855 iocb->u.isp24.port_name, 4856 iocb->u.isp24.u.plogi.node_name, 4857 pla, 0); 4858 else 4859 qla24xx_post_newsess_work(vha, &port_id, 4860 iocb->u.isp24.port_name, NULL, 4861 pla, 0); 4862 4863 goto out; 4864 } 4865 4866 if (sess->disc_state == DSC_UPD_FCPORT) { 4867 u16 sec; 4868 4869 /* 4870 * Remote port registration is still going on from 4871 * previous login. Allow it to finish before we 4872 * accept the new login. 4873 */ 4874 sess->next_disc_state = DSC_DELETE_PEND; 4875 sec = jiffies_to_msecs(jiffies - 4876 sess->jiffies_at_registration) / 1000; 4877 if (sess->sec_since_registration < sec && sec && 4878 !(sec % 5)) { 4879 sess->sec_since_registration = sec; 4880 ql_dbg(ql_dbg_disc, vha, 0xffff, 4881 "%s %8phC - Slow Rport registration (%d Sec)\n", 4882 __func__, sess->port_name, sec); 4883 } 4884 4885 if (!conflict_sess) { 4886 list_del(&pla->list); 4887 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4888 } 4889 4890 qlt_send_term_imm_notif(vha, iocb, 1); 4891 goto out; 4892 } 4893 4894 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4895 sess->d_id = port_id; 4896 sess->login_gen++; 4897 sess->loop_id = loop_id; 4898 4899 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4900 /* remote port has assigned Port ID */ 4901 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4902 vha->d_id = sess->d_id; 4903 4904 ql_dbg(ql_dbg_disc, vha, 0xffff, 4905 "%s %8phC - send port online\n", 4906 __func__, sess->port_name); 4907 4908 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4909 sess->d_id.b24); 4910 } 4911 4912 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4913 sess->fw_login_state = DSC_LS_PRLI_PEND; 4914 sess->local = 0; 4915 sess->loop_id = loop_id; 4916 sess->d_id = port_id; 4917 sess->fw_login_state = DSC_LS_PRLI_PEND; 4918 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4919 4920 if (wd3_lo & BIT_7) 4921 sess->conf_compl_supported = 1; 4922 4923 if ((wd3_lo & BIT_4) == 0) 4924 sess->port_type = FCT_INITIATOR; 4925 else 4926 sess->port_type = FCT_TARGET; 4927 4928 } else 4929 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4930 4931 4932 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4933 "%s %d %8phC DS %d\n", 4934 __func__, __LINE__, sess->port_name, sess->disc_state); 4935 4936 switch (sess->disc_state) { 4937 case DSC_DELETED: 4938 case DSC_LOGIN_PEND: 4939 qlt_plogi_ack_unref(vha, pla); 4940 break; 4941 4942 default: 4943 /* 4944 * Under normal circumstances we want to release nport handle 4945 * during LOGO process to avoid nport handle leaks inside FW. 4946 * The exception is when LOGO is done while another PLOGI with 4947 * the same nport handle is waiting as might be the case here. 4948 * Note: there is always a possibily of a race where session 4949 * deletion has already started for other reasons (e.g. ACL 4950 * removal) and now PLOGI arrives: 4951 * 1. if PLOGI arrived in FW after nport handle has been freed, 4952 * FW must have assigned this PLOGI a new/same handle and we 4953 * can proceed ACK'ing it as usual when session deletion 4954 * completes. 4955 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4956 * bit reached it, the handle has now been released. We'll 4957 * get an error when we ACK this PLOGI. Nothing will be sent 4958 * back to initiator. Initiator should eventually retry 4959 * PLOGI and situation will correct itself. 4960 */ 4961 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4962 (sess->d_id.b24 == port_id.b24)); 4963 4964 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4965 "%s %d %8phC post del sess\n", 4966 __func__, __LINE__, sess->port_name); 4967 4968 4969 qlt_schedule_sess_for_deletion(sess); 4970 break; 4971 } 4972 out: 4973 return res; 4974 } 4975 4976 /* 4977 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4978 */ 4979 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4980 struct imm_ntfy_from_isp *iocb) 4981 { 4982 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4983 struct qla_hw_data *ha = vha->hw; 4984 struct fc_port *sess = NULL, *conflict_sess = NULL; 4985 uint64_t wwn; 4986 port_id_t port_id; 4987 uint16_t loop_id; 4988 uint16_t wd3_lo; 4989 int res = 0; 4990 unsigned long flags; 4991 4992 lockdep_assert_held(&ha->hardware_lock); 4993 4994 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4995 4996 port_id.b.domain = iocb->u.isp24.port_id[2]; 4997 port_id.b.area = iocb->u.isp24.port_id[1]; 4998 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4999 port_id.b.rsvd_1 = 0; 5000 5001 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 5002 5003 ql_dbg(ql_dbg_disc, vha, 0xf026, 5004 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 5005 vha->vp_idx, iocb->u.isp24.port_id[2], 5006 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 5007 iocb->u.isp24.status_subcode, loop_id, 5008 iocb->u.isp24.port_name); 5009 5010 /* res = 1 means ack at the end of thread 5011 * res = 0 means ack async/later. 5012 */ 5013 switch (iocb->u.isp24.status_subcode) { 5014 case ELS_PLOGI: 5015 res = qlt_handle_login(vha, iocb); 5016 break; 5017 5018 case ELS_PRLI: 5019 if (N2N_TOPO(ha)) { 5020 sess = qla2x00_find_fcport_by_wwpn(vha, 5021 iocb->u.isp24.port_name, 1); 5022 5023 if (vha->hw->flags.edif_enabled && sess && 5024 (!(sess->flags & FCF_FCSP_DEVICE) || 5025 !sess->edif.authok)) { 5026 ql_dbg(ql_dbg_disc, vha, 0xffff, 5027 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 5028 __func__, __LINE__, iocb->u.isp24.port_name); 5029 qlt_send_term_imm_notif(vha, iocb, 1); 5030 break; 5031 } 5032 5033 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5034 ql_dbg(ql_dbg_disc, vha, 0xffff, 5035 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5036 __func__, __LINE__, 5037 iocb->u.isp24.port_name); 5038 qlt_send_term_imm_notif(vha, iocb, 1); 5039 break; 5040 } 5041 5042 res = qlt_handle_login(vha, iocb); 5043 break; 5044 } 5045 5046 if (IS_SW_RESV_ADDR(port_id)) { 5047 res = 1; 5048 break; 5049 } 5050 5051 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5052 5053 if (wwn) { 5054 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5055 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5056 loop_id, &conflict_sess); 5057 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5058 } 5059 5060 if (conflict_sess) { 5061 switch (conflict_sess->disc_state) { 5062 case DSC_DELETED: 5063 case DSC_DELETE_PEND: 5064 break; 5065 default: 5066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5067 "PRLI with conflicting sess %p port %8phC\n", 5068 conflict_sess, conflict_sess->port_name); 5069 conflict_sess->fw_login_state = 5070 DSC_LS_PORT_UNAVAIL; 5071 qlt_send_term_imm_notif(vha, iocb, 1); 5072 res = 0; 5073 break; 5074 } 5075 } 5076 5077 if (sess != NULL) { 5078 bool delete = false; 5079 int sec; 5080 5081 if (vha->hw->flags.edif_enabled && sess && 5082 (!(sess->flags & FCF_FCSP_DEVICE) || 5083 !sess->edif.authok)) { 5084 ql_dbg(ql_dbg_disc, vha, 0xffff, 5085 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5086 __func__, __LINE__, iocb->u.isp24.port_name); 5087 qlt_send_term_imm_notif(vha, iocb, 1); 5088 break; 5089 } 5090 5091 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5092 switch (sess->fw_login_state) { 5093 case DSC_LS_PLOGI_PEND: 5094 case DSC_LS_PLOGI_COMP: 5095 case DSC_LS_PRLI_COMP: 5096 break; 5097 default: 5098 delete = true; 5099 break; 5100 } 5101 5102 switch (sess->disc_state) { 5103 case DSC_UPD_FCPORT: 5104 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5105 flags); 5106 5107 sec = jiffies_to_msecs(jiffies - 5108 sess->jiffies_at_registration)/1000; 5109 if (sess->sec_since_registration < sec && sec && 5110 !(sec % 5)) { 5111 sess->sec_since_registration = sec; 5112 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5113 "%s %8phC : Slow Rport registration(%d Sec)\n", 5114 __func__, sess->port_name, sec); 5115 } 5116 qlt_send_term_imm_notif(vha, iocb, 1); 5117 return 0; 5118 5119 case DSC_LOGIN_PEND: 5120 case DSC_GPDB: 5121 case DSC_LOGIN_COMPLETE: 5122 case DSC_ADISC: 5123 delete = false; 5124 break; 5125 default: 5126 break; 5127 } 5128 5129 if (delete) { 5130 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5131 flags); 5132 /* 5133 * Impatient initiator sent PRLI before last 5134 * PLOGI could finish. Will force him to re-try, 5135 * while last one finishes. 5136 */ 5137 ql_log(ql_log_warn, sess->vha, 0xf095, 5138 "sess %p PRLI received, before plogi ack.\n", 5139 sess); 5140 qlt_send_term_imm_notif(vha, iocb, 1); 5141 res = 0; 5142 break; 5143 } 5144 5145 /* 5146 * This shouldn't happen under normal circumstances, 5147 * since we have deleted the old session during PLOGI 5148 */ 5149 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5150 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5151 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5152 5153 sess->local = 0; 5154 sess->loop_id = loop_id; 5155 sess->d_id = port_id; 5156 sess->fw_login_state = DSC_LS_PRLI_PEND; 5157 5158 if (wd3_lo & BIT_7) 5159 sess->conf_compl_supported = 1; 5160 5161 if ((wd3_lo & BIT_4) == 0) 5162 sess->port_type = FCT_INITIATOR; 5163 else 5164 sess->port_type = FCT_TARGET; 5165 5166 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5167 } 5168 res = 1; /* send notify ack */ 5169 5170 /* Make session global (not used in fabric mode) */ 5171 if (ha->current_topology != ISP_CFG_F) { 5172 if (sess) { 5173 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5174 "%s %d %8phC post nack\n", 5175 __func__, __LINE__, sess->port_name); 5176 qla24xx_post_nack_work(vha, sess, iocb, 5177 SRB_NACK_PRLI); 5178 res = 0; 5179 } else { 5180 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5181 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5182 qla2xxx_wake_dpc(vha); 5183 } 5184 } else { 5185 if (sess) { 5186 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5187 "%s %d %8phC post nack\n", 5188 __func__, __LINE__, sess->port_name); 5189 qla24xx_post_nack_work(vha, sess, iocb, 5190 SRB_NACK_PRLI); 5191 res = 0; 5192 } 5193 } 5194 break; 5195 5196 case ELS_TPRLO: 5197 if (le16_to_cpu(iocb->u.isp24.flags) & 5198 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5199 loop_id = 0xFFFF; 5200 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5201 res = 1; 5202 break; 5203 } 5204 fallthrough; 5205 case ELS_LOGO: 5206 case ELS_PRLO: 5207 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5208 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5209 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5210 5211 if (sess) { 5212 sess->login_gen++; 5213 sess->fw_login_state = DSC_LS_LOGO_PEND; 5214 sess->logo_ack_needed = 1; 5215 memcpy(sess->iocb, iocb, IOCB_SIZE); 5216 } 5217 5218 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5219 5220 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5221 "%s: logo %llx res %d sess %p ", 5222 __func__, wwn, res, sess); 5223 if (res == 0) { 5224 /* 5225 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5226 * for LOGO_ACK & sess delete 5227 */ 5228 BUG_ON(!sess); 5229 res = 0; 5230 } else { 5231 /* cmd did not go to upper layer. */ 5232 if (sess) { 5233 qlt_schedule_sess_for_deletion(sess); 5234 res = 0; 5235 } 5236 /* else logo will be ack */ 5237 } 5238 break; 5239 case ELS_PDISC: 5240 case ELS_ADISC: 5241 { 5242 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5243 5244 if (tgt->link_reinit_iocb_pending) { 5245 qlt_send_notify_ack(ha->base_qpair, 5246 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5247 tgt->link_reinit_iocb_pending = 0; 5248 } 5249 5250 sess = qla2x00_find_fcport_by_wwpn(vha, 5251 iocb->u.isp24.port_name, 1); 5252 if (sess) { 5253 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5254 "sess %p lid %d|%d DS %d LS %d\n", 5255 sess, sess->loop_id, loop_id, 5256 sess->disc_state, sess->fw_login_state); 5257 } 5258 5259 res = 1; /* send notify ack */ 5260 break; 5261 } 5262 5263 case ELS_FLOGI: /* should never happen */ 5264 default: 5265 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5266 "qla_target(%d): Unsupported ELS command %x " 5267 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5268 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5269 break; 5270 } 5271 5272 ql_dbg(ql_dbg_disc, vha, 0xf026, 5273 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5274 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5275 5276 return res; 5277 } 5278 5279 /* 5280 * ha->hardware_lock supposed to be held on entry. 5281 * Might drop it, then reacquire. 5282 */ 5283 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5284 struct imm_ntfy_from_isp *iocb) 5285 { 5286 struct qla_hw_data *ha = vha->hw; 5287 uint32_t add_flags = 0; 5288 int send_notify_ack = 1; 5289 uint16_t status; 5290 5291 lockdep_assert_held(&ha->hardware_lock); 5292 5293 status = le16_to_cpu(iocb->u.isp2x.status); 5294 switch (status) { 5295 case IMM_NTFY_LIP_RESET: 5296 { 5297 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5298 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5299 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5300 iocb->u.isp24.status_subcode); 5301 5302 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5303 send_notify_ack = 0; 5304 break; 5305 } 5306 5307 case IMM_NTFY_LIP_LINK_REINIT: 5308 { 5309 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5310 5311 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5312 "qla_target(%d): LINK REINIT (loop %#x, " 5313 "subcode %x)\n", vha->vp_idx, 5314 le16_to_cpu(iocb->u.isp24.nport_handle), 5315 iocb->u.isp24.status_subcode); 5316 if (tgt->link_reinit_iocb_pending) { 5317 qlt_send_notify_ack(ha->base_qpair, 5318 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5319 } 5320 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5321 tgt->link_reinit_iocb_pending = 1; 5322 /* 5323 * QLogic requires to wait after LINK REINIT for possible 5324 * PDISC or ADISC ELS commands 5325 */ 5326 send_notify_ack = 0; 5327 break; 5328 } 5329 5330 case IMM_NTFY_PORT_LOGOUT: 5331 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5332 "qla_target(%d): Port logout (loop " 5333 "%#x, subcode %x)\n", vha->vp_idx, 5334 le16_to_cpu(iocb->u.isp24.nport_handle), 5335 iocb->u.isp24.status_subcode); 5336 5337 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5338 send_notify_ack = 0; 5339 /* The sessions will be cleared in the callback, if needed */ 5340 break; 5341 5342 case IMM_NTFY_GLBL_TPRLO: 5343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5344 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5345 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5346 send_notify_ack = 0; 5347 /* The sessions will be cleared in the callback, if needed */ 5348 break; 5349 5350 case IMM_NTFY_PORT_CONFIG: 5351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5352 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5353 status); 5354 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5355 send_notify_ack = 0; 5356 /* The sessions will be cleared in the callback, if needed */ 5357 break; 5358 5359 case IMM_NTFY_GLBL_LOGO: 5360 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5361 "qla_target(%d): Link failure detected\n", 5362 vha->vp_idx); 5363 /* I_T nexus loss */ 5364 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5365 send_notify_ack = 0; 5366 break; 5367 5368 case IMM_NTFY_IOCB_OVERFLOW: 5369 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5370 "qla_target(%d): Cannot provide requested " 5371 "capability (IOCB overflowed the immediate notify " 5372 "resource count)\n", vha->vp_idx); 5373 break; 5374 5375 case IMM_NTFY_ABORT_TASK: 5376 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5377 "qla_target(%d): Abort Task (S %08x I %#x -> " 5378 "L %#x)\n", vha->vp_idx, 5379 le16_to_cpu(iocb->u.isp2x.seq_id), 5380 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5381 le16_to_cpu(iocb->u.isp2x.lun)); 5382 if (qlt_abort_task(vha, iocb) == 0) 5383 send_notify_ack = 0; 5384 break; 5385 5386 case IMM_NTFY_RESOURCE: 5387 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5388 "qla_target(%d): Out of resources, host %ld\n", 5389 vha->vp_idx, vha->host_no); 5390 break; 5391 5392 case IMM_NTFY_MSG_RX: 5393 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5394 "qla_target(%d): Immediate notify task %x\n", 5395 vha->vp_idx, iocb->u.isp2x.task_flags); 5396 break; 5397 5398 case IMM_NTFY_ELS: 5399 if (qlt_24xx_handle_els(vha, iocb) == 0) 5400 send_notify_ack = 0; 5401 break; 5402 default: 5403 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5404 "qla_target(%d): Received unknown immediate " 5405 "notify status %x\n", vha->vp_idx, status); 5406 break; 5407 } 5408 5409 if (send_notify_ack) 5410 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5411 0, 0); 5412 } 5413 5414 /* 5415 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5416 * This function sends busy to ISP 2xxx or 24xx. 5417 */ 5418 static int __qlt_send_busy(struct qla_qpair *qpair, 5419 struct atio_from_isp *atio, uint16_t status) 5420 { 5421 struct scsi_qla_host *vha = qpair->vha; 5422 struct ctio7_to_24xx *ctio24; 5423 struct qla_hw_data *ha = vha->hw; 5424 request_t *pkt; 5425 struct fc_port *sess = NULL; 5426 unsigned long flags; 5427 u16 temp; 5428 port_id_t id; 5429 5430 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5431 5432 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5433 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5434 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5435 if (!sess) { 5436 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5437 return 0; 5438 } 5439 /* Sending marker isn't necessary, since we called from ISR */ 5440 5441 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5442 if (!pkt) { 5443 ql_dbg(ql_dbg_io, vha, 0x3063, 5444 "qla_target(%d): %s failed: unable to allocate " 5445 "request packet", vha->vp_idx, __func__); 5446 return -ENOMEM; 5447 } 5448 5449 qpair->tgt_counters.num_q_full_sent++; 5450 pkt->entry_count = 1; 5451 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5452 5453 ctio24 = (struct ctio7_to_24xx *)pkt; 5454 ctio24->entry_type = CTIO_TYPE7; 5455 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5456 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5457 ctio24->vp_index = vha->vp_idx; 5458 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5459 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5460 temp = (atio->u.isp24.attr << 9) | 5461 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5462 CTIO7_FLAGS_DONT_RET_CTIO; 5463 ctio24->u.status1.flags = cpu_to_le16(temp); 5464 /* 5465 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5466 * if the explicit conformation is used. 5467 */ 5468 ctio24->u.status1.ox_id = 5469 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5470 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5471 5472 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5473 5474 if (ctio24->u.status1.residual != 0) 5475 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5476 5477 /* Memory Barrier */ 5478 wmb(); 5479 if (qpair->reqq_start_iocbs) 5480 qpair->reqq_start_iocbs(qpair); 5481 else 5482 qla2x00_start_iocbs(vha, qpair->req); 5483 return 0; 5484 } 5485 5486 /* 5487 * This routine is used to allocate a command for either a QFull condition 5488 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5489 * out previously. 5490 */ 5491 static void 5492 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5493 struct atio_from_isp *atio, uint16_t status, int qfull) 5494 { 5495 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5496 struct qla_hw_data *ha = vha->hw; 5497 struct fc_port *sess; 5498 struct qla_tgt_cmd *cmd; 5499 unsigned long flags; 5500 5501 if (unlikely(tgt->tgt_stop)) { 5502 ql_dbg(ql_dbg_io, vha, 0x300a, 5503 "New command while device %p is shutting down\n", tgt); 5504 return; 5505 } 5506 5507 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5508 vha->hw->tgt.num_qfull_cmds_dropped++; 5509 if (vha->hw->tgt.num_qfull_cmds_dropped > 5510 vha->qla_stats.stat_max_qfull_cmds_dropped) 5511 vha->qla_stats.stat_max_qfull_cmds_dropped = 5512 vha->hw->tgt.num_qfull_cmds_dropped; 5513 5514 ql_dbg(ql_dbg_io, vha, 0x3068, 5515 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5516 vha->vp_idx, __func__, 5517 vha->hw->tgt.num_qfull_cmds_dropped); 5518 5519 qlt_chk_exch_leak_thresh_hold(vha); 5520 return; 5521 } 5522 5523 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5524 (vha, atio->u.isp24.fcp_hdr.s_id); 5525 if (!sess) 5526 return; 5527 5528 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5529 if (!cmd) { 5530 ql_dbg(ql_dbg_io, vha, 0x3009, 5531 "qla_target(%d): %s: Allocation of cmd failed\n", 5532 vha->vp_idx, __func__); 5533 5534 vha->hw->tgt.num_qfull_cmds_dropped++; 5535 if (vha->hw->tgt.num_qfull_cmds_dropped > 5536 vha->qla_stats.stat_max_qfull_cmds_dropped) 5537 vha->qla_stats.stat_max_qfull_cmds_dropped = 5538 vha->hw->tgt.num_qfull_cmds_dropped; 5539 5540 qlt_chk_exch_leak_thresh_hold(vha); 5541 return; 5542 } 5543 5544 qlt_incr_num_pend_cmds(vha); 5545 INIT_LIST_HEAD(&cmd->cmd_list); 5546 memcpy(&cmd->atio, atio, sizeof(*atio)); 5547 5548 cmd->tgt = vha->vha_tgt.qla_tgt; 5549 cmd->vha = vha; 5550 cmd->reset_count = ha->base_qpair->chip_reset; 5551 cmd->q_full = 1; 5552 cmd->qpair = ha->base_qpair; 5553 5554 if (qfull) { 5555 cmd->q_full = 1; 5556 /* NOTE: borrowing the state field to carry the status */ 5557 cmd->state = status; 5558 } else 5559 cmd->term_exchg = 1; 5560 5561 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5562 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5563 5564 vha->hw->tgt.num_qfull_cmds_alloc++; 5565 if (vha->hw->tgt.num_qfull_cmds_alloc > 5566 vha->qla_stats.stat_max_qfull_cmds_alloc) 5567 vha->qla_stats.stat_max_qfull_cmds_alloc = 5568 vha->hw->tgt.num_qfull_cmds_alloc; 5569 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5570 } 5571 5572 int 5573 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5574 { 5575 struct scsi_qla_host *vha = qpair->vha; 5576 struct qla_hw_data *ha = vha->hw; 5577 unsigned long flags; 5578 struct qla_tgt_cmd *cmd, *tcmd; 5579 struct list_head free_list, q_full_list; 5580 int rc = 0; 5581 5582 if (list_empty(&ha->tgt.q_full_list)) 5583 return 0; 5584 5585 INIT_LIST_HEAD(&free_list); 5586 INIT_LIST_HEAD(&q_full_list); 5587 5588 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5589 if (list_empty(&ha->tgt.q_full_list)) { 5590 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5591 return 0; 5592 } 5593 5594 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5595 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5596 5597 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5598 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5599 if (cmd->q_full) 5600 /* cmd->state is a borrowed field to hold status */ 5601 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5602 else if (cmd->term_exchg) 5603 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5604 5605 if (rc == -ENOMEM) 5606 break; 5607 5608 if (cmd->q_full) 5609 ql_dbg(ql_dbg_io, vha, 0x3006, 5610 "%s: busy sent for ox_id[%04x]\n", __func__, 5611 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5612 else if (cmd->term_exchg) 5613 ql_dbg(ql_dbg_io, vha, 0x3007, 5614 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5615 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5616 else 5617 ql_dbg(ql_dbg_io, vha, 0x3008, 5618 "%s: Unexpected cmd in QFull list %p\n", __func__, 5619 cmd); 5620 5621 list_move_tail(&cmd->cmd_list, &free_list); 5622 5623 /* piggy back on hardware_lock for protection */ 5624 vha->hw->tgt.num_qfull_cmds_alloc--; 5625 } 5626 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5627 5628 cmd = NULL; 5629 5630 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5631 list_del(&cmd->cmd_list); 5632 /* This cmd was never sent to TCM. There is no need 5633 * to schedule free or call free_cmd 5634 */ 5635 qlt_free_cmd(cmd); 5636 } 5637 5638 if (!list_empty(&q_full_list)) { 5639 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5640 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5641 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5642 } 5643 5644 return rc; 5645 } 5646 5647 static void 5648 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5649 uint16_t status) 5650 { 5651 int rc = 0; 5652 struct scsi_qla_host *vha = qpair->vha; 5653 5654 rc = __qlt_send_busy(qpair, atio, status); 5655 if (rc == -ENOMEM) 5656 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5657 } 5658 5659 static int 5660 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5661 struct atio_from_isp *atio, uint8_t ha_locked) 5662 { 5663 struct qla_hw_data *ha = vha->hw; 5664 unsigned long flags; 5665 5666 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5667 return 0; 5668 5669 if (!ha_locked) 5670 spin_lock_irqsave(&ha->hardware_lock, flags); 5671 qlt_send_busy(qpair, atio, qla_sam_status); 5672 if (!ha_locked) 5673 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5674 5675 return 1; 5676 } 5677 5678 /* ha->hardware_lock supposed to be held on entry */ 5679 /* called via callback from qla2xxx */ 5680 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5681 struct atio_from_isp *atio, uint8_t ha_locked) 5682 { 5683 struct qla_hw_data *ha = vha->hw; 5684 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5685 int rc; 5686 unsigned long flags = 0; 5687 5688 if (unlikely(tgt == NULL)) { 5689 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5690 "ATIO pkt, but no tgt (ha %p)", ha); 5691 return; 5692 } 5693 /* 5694 * In tgt_stop mode we also should allow all requests to pass. 5695 * Otherwise, some commands can stuck. 5696 */ 5697 5698 tgt->atio_irq_cmd_count++; 5699 5700 switch (atio->u.raw.entry_type) { 5701 case ATIO_TYPE7: 5702 if (unlikely(atio->u.isp24.exchange_addr == 5703 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5704 ql_dbg(ql_dbg_io, vha, 0x3065, 5705 "qla_target(%d): ATIO_TYPE7 " 5706 "received with UNKNOWN exchange address, " 5707 "sending QUEUE_FULL\n", vha->vp_idx); 5708 if (!ha_locked) 5709 spin_lock_irqsave(&ha->hardware_lock, flags); 5710 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5711 if (!ha_locked) 5712 spin_unlock_irqrestore(&ha->hardware_lock, 5713 flags); 5714 break; 5715 } 5716 5717 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5718 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5719 atio, ha_locked); 5720 if (rc != 0) { 5721 tgt->atio_irq_cmd_count--; 5722 return; 5723 } 5724 rc = qlt_handle_cmd_for_atio(vha, atio); 5725 } else { 5726 rc = qlt_handle_task_mgmt(vha, atio); 5727 } 5728 if (unlikely(rc != 0)) { 5729 if (!ha_locked) 5730 spin_lock_irqsave(&ha->hardware_lock, flags); 5731 switch (rc) { 5732 case -ENODEV: 5733 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5734 "qla_target: Unable to send command to target\n"); 5735 break; 5736 case -EBADF: 5737 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5738 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5739 qlt_send_term_exchange(ha->base_qpair, NULL, 5740 atio, 1, 0); 5741 break; 5742 case -EBUSY: 5743 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5744 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5745 vha->vp_idx); 5746 qlt_send_busy(ha->base_qpair, atio, 5747 tc_sam_status); 5748 break; 5749 default: 5750 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5751 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5752 vha->vp_idx); 5753 qlt_send_busy(ha->base_qpair, atio, 5754 qla_sam_status); 5755 break; 5756 } 5757 if (!ha_locked) 5758 spin_unlock_irqrestore(&ha->hardware_lock, 5759 flags); 5760 } 5761 break; 5762 5763 case IMMED_NOTIFY_TYPE: 5764 { 5765 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5766 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5767 "qla_target(%d): Received ATIO packet %x " 5768 "with error status %x\n", vha->vp_idx, 5769 atio->u.raw.entry_type, 5770 atio->u.isp2x.entry_status); 5771 break; 5772 } 5773 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5774 5775 if (!ha_locked) 5776 spin_lock_irqsave(&ha->hardware_lock, flags); 5777 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5778 if (!ha_locked) 5779 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5780 break; 5781 } 5782 5783 default: 5784 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5785 "qla_target(%d): Received unknown ATIO atio " 5786 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5787 break; 5788 } 5789 5790 tgt->atio_irq_cmd_count--; 5791 } 5792 5793 /* 5794 * qpair lock is assume to be held 5795 * rc = 0 : send terminate & abts respond 5796 * rc != 0: do not send term & abts respond 5797 */ 5798 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5799 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5800 { 5801 struct qla_hw_data *ha = vha->hw; 5802 int rc = 0; 5803 5804 /* 5805 * Detect unresolved exchange. If the same ABTS is unable 5806 * to terminate an existing command and the same ABTS loops 5807 * between FW & Driver, then force FW dump. Under 1 jiff, 5808 * we should see multiple loops. 5809 */ 5810 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5811 qpair->retry_term_jiff == jiffies) { 5812 /* found existing exchange */ 5813 qpair->retry_term_cnt++; 5814 if (qpair->retry_term_cnt >= 5) { 5815 rc = -EIO; 5816 qpair->retry_term_cnt = 0; 5817 ql_log(ql_log_warn, vha, 0xffff, 5818 "Unable to send ABTS Respond. Dumping firmware.\n"); 5819 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5820 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5821 5822 if (qpair == ha->base_qpair) 5823 ha->isp_ops->fw_dump(vha); 5824 else 5825 qla2xxx_dump_fw(vha); 5826 5827 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5828 qla2xxx_wake_dpc(vha); 5829 } 5830 } else if (qpair->retry_term_jiff != jiffies) { 5831 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5832 qpair->retry_term_cnt = 0; 5833 qpair->retry_term_jiff = jiffies; 5834 } 5835 5836 return rc; 5837 } 5838 5839 5840 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5841 struct rsp_que *rsp, response_t *pkt) 5842 { 5843 struct abts_resp_from_24xx_fw *entry = 5844 (struct abts_resp_from_24xx_fw *)pkt; 5845 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5846 struct qla_tgt_mgmt_cmd *mcmd; 5847 struct qla_hw_data *ha = vha->hw; 5848 5849 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5850 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5851 ql_dbg(ql_dbg_async, vha, 0xe064, 5852 "qla_target(%d): ABTS Comp without mcmd\n", 5853 vha->vp_idx); 5854 return; 5855 } 5856 5857 if (mcmd) 5858 vha = mcmd->vha; 5859 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5860 5861 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5862 "ABTS_RESP_24XX: compl_status %x\n", 5863 entry->compl_status); 5864 5865 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5866 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5867 le32_to_cpu(entry->error_subcode2) == 0) { 5868 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5869 ha->tgt.tgt_ops->free_mcmd(mcmd); 5870 return; 5871 } 5872 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5873 pkt, mcmd); 5874 } else { 5875 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5876 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5877 vha->vp_idx, entry->compl_status, 5878 entry->error_subcode1, 5879 entry->error_subcode2); 5880 ha->tgt.tgt_ops->free_mcmd(mcmd); 5881 } 5882 } else if (mcmd) { 5883 ha->tgt.tgt_ops->free_mcmd(mcmd); 5884 } 5885 } 5886 5887 /* ha->hardware_lock supposed to be held on entry */ 5888 /* called via callback from qla2xxx */ 5889 static void qlt_response_pkt(struct scsi_qla_host *vha, 5890 struct rsp_que *rsp, response_t *pkt) 5891 { 5892 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5893 5894 if (unlikely(tgt == NULL)) { 5895 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5896 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5897 vha->vp_idx, pkt->entry_type, vha->hw); 5898 return; 5899 } 5900 5901 /* 5902 * In tgt_stop mode we also should allow all requests to pass. 5903 * Otherwise, some commands can stuck. 5904 */ 5905 5906 switch (pkt->entry_type) { 5907 case CTIO_CRC2: 5908 case CTIO_TYPE7: 5909 { 5910 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5911 5912 qlt_do_ctio_completion(vha, rsp, entry->handle, 5913 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5914 entry); 5915 break; 5916 } 5917 5918 case ACCEPT_TGT_IO_TYPE: 5919 { 5920 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5921 int rc; 5922 5923 if (atio->u.isp2x.status != 5924 cpu_to_le16(ATIO_CDB_VALID)) { 5925 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5926 "qla_target(%d): ATIO with error " 5927 "status %x received\n", vha->vp_idx, 5928 le16_to_cpu(atio->u.isp2x.status)); 5929 break; 5930 } 5931 5932 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5933 if (rc != 0) 5934 return; 5935 5936 rc = qlt_handle_cmd_for_atio(vha, atio); 5937 if (unlikely(rc != 0)) { 5938 switch (rc) { 5939 case -ENODEV: 5940 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5941 "qla_target: Unable to send command to target\n"); 5942 break; 5943 case -EBADF: 5944 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5945 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5946 qlt_send_term_exchange(rsp->qpair, NULL, 5947 atio, 1, 0); 5948 break; 5949 case -EBUSY: 5950 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5951 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5952 vha->vp_idx); 5953 qlt_send_busy(rsp->qpair, atio, 5954 tc_sam_status); 5955 break; 5956 default: 5957 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5958 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5959 vha->vp_idx); 5960 qlt_send_busy(rsp->qpair, atio, 5961 qla_sam_status); 5962 break; 5963 } 5964 } 5965 } 5966 break; 5967 5968 case CONTINUE_TGT_IO_TYPE: 5969 { 5970 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5971 5972 qlt_do_ctio_completion(vha, rsp, entry->handle, 5973 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5974 entry); 5975 break; 5976 } 5977 5978 case CTIO_A64_TYPE: 5979 { 5980 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5981 5982 qlt_do_ctio_completion(vha, rsp, entry->handle, 5983 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5984 entry); 5985 break; 5986 } 5987 5988 case IMMED_NOTIFY_TYPE: 5989 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5990 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5991 break; 5992 5993 case NOTIFY_ACK_TYPE: 5994 if (tgt->notify_ack_expected > 0) { 5995 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5996 5997 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5998 "NOTIFY_ACK seq %08x status %x\n", 5999 le16_to_cpu(entry->u.isp2x.seq_id), 6000 le16_to_cpu(entry->u.isp2x.status)); 6001 tgt->notify_ack_expected--; 6002 if (entry->u.isp2x.status != 6003 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 6004 ql_dbg(ql_dbg_tgt, vha, 0xe061, 6005 "qla_target(%d): NOTIFY_ACK " 6006 "failed %x\n", vha->vp_idx, 6007 le16_to_cpu(entry->u.isp2x.status)); 6008 } 6009 } else { 6010 ql_dbg(ql_dbg_tgt, vha, 0xe062, 6011 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 6012 vha->vp_idx); 6013 } 6014 break; 6015 6016 case ABTS_RECV_24XX: 6017 ql_dbg(ql_dbg_tgt, vha, 0xe037, 6018 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 6019 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 6020 break; 6021 6022 case ABTS_RESP_24XX: 6023 if (tgt->abts_resp_expected > 0) { 6024 qlt_handle_abts_completion(vha, rsp, pkt); 6025 } else { 6026 ql_dbg(ql_dbg_tgt, vha, 0xe064, 6027 "qla_target(%d): Unexpected ABTS_RESP_24XX " 6028 "received\n", vha->vp_idx); 6029 } 6030 break; 6031 6032 default: 6033 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6034 "qla_target(%d): Received unknown response pkt " 6035 "type %x\n", vha->vp_idx, pkt->entry_type); 6036 break; 6037 } 6038 6039 } 6040 6041 /* 6042 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6043 */ 6044 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6045 uint16_t *mailbox) 6046 { 6047 struct qla_hw_data *ha = vha->hw; 6048 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6049 int login_code; 6050 6051 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6052 return; 6053 6054 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6055 IS_QLA2100(ha)) 6056 return; 6057 /* 6058 * In tgt_stop mode we also should allow all requests to pass. 6059 * Otherwise, some commands can stuck. 6060 */ 6061 6062 6063 switch (code) { 6064 case MBA_RESET: /* Reset */ 6065 case MBA_SYSTEM_ERR: /* System Error */ 6066 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6067 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6069 "qla_target(%d): System error async event %#x " 6070 "occurred", vha->vp_idx, code); 6071 break; 6072 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6073 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6074 break; 6075 6076 case MBA_LOOP_UP: 6077 { 6078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6079 "qla_target(%d): Async LOOP_UP occurred " 6080 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6081 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6082 if (tgt->link_reinit_iocb_pending) { 6083 qlt_send_notify_ack(ha->base_qpair, 6084 &tgt->link_reinit_iocb, 6085 0, 0, 0, 0, 0, 0); 6086 tgt->link_reinit_iocb_pending = 0; 6087 } 6088 break; 6089 } 6090 6091 case MBA_LIP_OCCURRED: 6092 case MBA_LOOP_DOWN: 6093 case MBA_LIP_RESET: 6094 case MBA_RSCN_UPDATE: 6095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6096 "qla_target(%d): Async event %#x occurred " 6097 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6098 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6099 break; 6100 6101 case MBA_REJECTED_FCP_CMD: 6102 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6103 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6104 vha->vp_idx, 6105 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6106 6107 if (mailbox[3] == 1) { 6108 /* exchange starvation. */ 6109 vha->hw->exch_starvation++; 6110 if (vha->hw->exch_starvation > 5) { 6111 ql_log(ql_log_warn, vha, 0xd03a, 6112 "Exchange starvation-. Resetting RISC\n"); 6113 6114 vha->hw->exch_starvation = 0; 6115 if (IS_P3P_TYPE(vha->hw)) 6116 set_bit(FCOE_CTX_RESET_NEEDED, 6117 &vha->dpc_flags); 6118 else 6119 set_bit(ISP_ABORT_NEEDED, 6120 &vha->dpc_flags); 6121 qla2xxx_wake_dpc(vha); 6122 } 6123 } 6124 break; 6125 6126 case MBA_PORT_UPDATE: 6127 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6128 "qla_target(%d): Port update async event %#x " 6129 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6130 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6131 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6132 6133 login_code = mailbox[2]; 6134 if (login_code == 0x4) { 6135 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6136 "Async MB 2: Got PLOGI Complete\n"); 6137 vha->hw->exch_starvation = 0; 6138 } else if (login_code == 0x7) 6139 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6140 "Async MB 2: Port Logged Out\n"); 6141 break; 6142 default: 6143 break; 6144 } 6145 6146 } 6147 6148 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6149 uint16_t loop_id) 6150 { 6151 fc_port_t *fcport, *tfcp, *del; 6152 int rc; 6153 unsigned long flags; 6154 u8 newfcport = 0; 6155 6156 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6157 if (!fcport) { 6158 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6159 "qla_target(%d): Allocation of tmp FC port failed", 6160 vha->vp_idx); 6161 return NULL; 6162 } 6163 6164 fcport->loop_id = loop_id; 6165 6166 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6167 if (rc != QLA_SUCCESS) { 6168 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6169 "qla_target(%d): Failed to retrieve fcport " 6170 "information -- get_port_database() returned %x " 6171 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6172 kfree(fcport); 6173 return NULL; 6174 } 6175 6176 del = NULL; 6177 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6178 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6179 6180 if (tfcp) { 6181 tfcp->d_id = fcport->d_id; 6182 tfcp->port_type = fcport->port_type; 6183 tfcp->supported_classes = fcport->supported_classes; 6184 tfcp->flags |= fcport->flags; 6185 tfcp->scan_state = QLA_FCPORT_FOUND; 6186 6187 del = fcport; 6188 fcport = tfcp; 6189 } else { 6190 if (vha->hw->current_topology == ISP_CFG_F) 6191 fcport->flags |= FCF_FABRIC_DEVICE; 6192 6193 list_add_tail(&fcport->list, &vha->vp_fcports); 6194 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6195 vha->fcport_count++; 6196 fcport->login_gen++; 6197 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6198 fcport->login_succ = 1; 6199 newfcport = 1; 6200 } 6201 6202 fcport->deleted = 0; 6203 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6204 6205 switch (vha->host->active_mode) { 6206 case MODE_INITIATOR: 6207 case MODE_DUAL: 6208 if (newfcport) { 6209 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6210 qla24xx_sched_upd_fcport(fcport); 6211 } else { 6212 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6213 "%s %d %8phC post gpsc fcp_cnt %d\n", 6214 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6215 qla24xx_post_gpsc_work(vha, fcport); 6216 } 6217 } 6218 break; 6219 6220 case MODE_TARGET: 6221 default: 6222 break; 6223 } 6224 if (del) 6225 qla2x00_free_fcport(del); 6226 6227 return fcport; 6228 } 6229 6230 /* Must be called under tgt_mutex */ 6231 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6232 be_id_t s_id) 6233 { 6234 struct fc_port *sess = NULL; 6235 fc_port_t *fcport = NULL; 6236 int rc, global_resets; 6237 uint16_t loop_id = 0; 6238 6239 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6240 /* 6241 * This is Domain Controller, so it should be 6242 * OK to drop SCSI commands from it. 6243 */ 6244 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6245 "Unable to find initiator with S_ID %x:%x:%x", 6246 s_id.domain, s_id.area, s_id.al_pa); 6247 return NULL; 6248 } 6249 6250 mutex_lock(&vha->vha_tgt.tgt_mutex); 6251 6252 retry: 6253 global_resets = 6254 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6255 6256 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6257 if (rc != 0) { 6258 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6259 6260 ql_log(ql_log_info, vha, 0xf071, 6261 "qla_target(%d): Unable to find " 6262 "initiator with S_ID %x:%x:%x", 6263 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6264 6265 if (rc == -ENOENT) { 6266 qlt_port_logo_t logo; 6267 6268 logo.id = be_to_port_id(s_id); 6269 logo.cmd_count = 1; 6270 qlt_send_first_logo(vha, &logo); 6271 } 6272 6273 return NULL; 6274 } 6275 6276 fcport = qlt_get_port_database(vha, loop_id); 6277 if (!fcport) { 6278 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6279 return NULL; 6280 } 6281 6282 if (global_resets != 6283 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6284 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6285 "qla_target(%d): global reset during session discovery " 6286 "(counter was %d, new %d), retrying", vha->vp_idx, 6287 global_resets, 6288 atomic_read(&vha->vha_tgt. 6289 qla_tgt->tgt_global_resets_count)); 6290 goto retry; 6291 } 6292 6293 sess = qlt_create_sess(vha, fcport, true); 6294 6295 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6296 6297 return sess; 6298 } 6299 6300 static void qlt_abort_work(struct qla_tgt *tgt, 6301 struct qla_tgt_sess_work_param *prm) 6302 { 6303 struct scsi_qla_host *vha = tgt->vha; 6304 struct qla_hw_data *ha = vha->hw; 6305 struct fc_port *sess = NULL; 6306 unsigned long flags = 0, flags2 = 0; 6307 be_id_t s_id; 6308 int rc; 6309 6310 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6311 6312 if (tgt->tgt_stop) 6313 goto out_term2; 6314 6315 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6316 6317 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6318 if (!sess) { 6319 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6320 6321 sess = qlt_make_local_sess(vha, s_id); 6322 /* sess has got an extra creation ref */ 6323 6324 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6325 if (!sess) 6326 goto out_term2; 6327 } else { 6328 if (sess->deleted) { 6329 sess = NULL; 6330 goto out_term2; 6331 } 6332 6333 if (!kref_get_unless_zero(&sess->sess_kref)) { 6334 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6335 "%s: kref_get fail %8phC \n", 6336 __func__, sess->port_name); 6337 sess = NULL; 6338 goto out_term2; 6339 } 6340 } 6341 6342 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6343 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6344 6345 ha->tgt.tgt_ops->put_sess(sess); 6346 6347 if (rc != 0) 6348 goto out_term; 6349 return; 6350 6351 out_term2: 6352 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6353 6354 out_term: 6355 spin_lock_irqsave(&ha->hardware_lock, flags); 6356 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6357 FCP_TMF_REJECTED, false); 6358 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6359 } 6360 6361 static void qlt_tmr_work(struct qla_tgt *tgt, 6362 struct qla_tgt_sess_work_param *prm) 6363 { 6364 struct atio_from_isp *a = &prm->tm_iocb2; 6365 struct scsi_qla_host *vha = tgt->vha; 6366 struct qla_hw_data *ha = vha->hw; 6367 struct fc_port *sess; 6368 unsigned long flags; 6369 be_id_t s_id; 6370 int rc; 6371 u64 unpacked_lun; 6372 int fn; 6373 void *iocb; 6374 6375 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6376 6377 if (tgt->tgt_stop) 6378 goto out_term2; 6379 6380 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6381 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6382 if (!sess) { 6383 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6384 6385 sess = qlt_make_local_sess(vha, s_id); 6386 /* sess has got an extra creation ref */ 6387 6388 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6389 if (!sess) 6390 goto out_term2; 6391 } else { 6392 if (sess->deleted) { 6393 goto out_term2; 6394 } 6395 6396 if (!kref_get_unless_zero(&sess->sess_kref)) { 6397 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6398 "%s: kref_get fail %8phC\n", 6399 __func__, sess->port_name); 6400 goto out_term2; 6401 } 6402 } 6403 6404 iocb = a; 6405 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6406 unpacked_lun = 6407 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6408 6409 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6410 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6411 6412 ha->tgt.tgt_ops->put_sess(sess); 6413 6414 if (rc != 0) 6415 goto out_term; 6416 return; 6417 6418 out_term2: 6419 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6420 out_term: 6421 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6422 } 6423 6424 static void qlt_sess_work_fn(struct work_struct *work) 6425 { 6426 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6427 struct scsi_qla_host *vha = tgt->vha; 6428 unsigned long flags; 6429 6430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6431 6432 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6433 while (!list_empty(&tgt->sess_works_list)) { 6434 struct qla_tgt_sess_work_param *prm = list_entry( 6435 tgt->sess_works_list.next, typeof(*prm), 6436 sess_works_list_entry); 6437 6438 /* 6439 * This work can be scheduled on several CPUs at time, so we 6440 * must delete the entry to eliminate double processing 6441 */ 6442 list_del(&prm->sess_works_list_entry); 6443 6444 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6445 6446 switch (prm->type) { 6447 case QLA_TGT_SESS_WORK_ABORT: 6448 qlt_abort_work(tgt, prm); 6449 break; 6450 case QLA_TGT_SESS_WORK_TM: 6451 qlt_tmr_work(tgt, prm); 6452 break; 6453 default: 6454 BUG_ON(1); 6455 break; 6456 } 6457 6458 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6459 6460 kfree(prm); 6461 } 6462 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6463 } 6464 6465 /* Must be called under tgt_host_action_mutex */ 6466 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6467 { 6468 struct qla_tgt *tgt; 6469 int rc, i; 6470 struct qla_qpair_hint *h; 6471 6472 if (!QLA_TGT_MODE_ENABLED()) 6473 return 0; 6474 6475 if (!IS_TGT_MODE_CAPABLE(ha)) { 6476 ql_log(ql_log_warn, base_vha, 0xe070, 6477 "This adapter does not support target mode.\n"); 6478 return 0; 6479 } 6480 6481 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6482 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6483 6484 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6485 6486 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6487 if (!tgt) { 6488 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6489 "Unable to allocate struct qla_tgt\n"); 6490 return -ENOMEM; 6491 } 6492 6493 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6494 sizeof(struct qla_qpair_hint), 6495 GFP_KERNEL); 6496 if (!tgt->qphints) { 6497 kfree(tgt); 6498 ql_log(ql_log_warn, base_vha, 0x0197, 6499 "Unable to allocate qpair hints.\n"); 6500 return -ENOMEM; 6501 } 6502 6503 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6504 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6505 6506 rc = btree_init64(&tgt->lun_qpair_map); 6507 if (rc) { 6508 kfree(tgt->qphints); 6509 kfree(tgt); 6510 ql_log(ql_log_info, base_vha, 0x0198, 6511 "Unable to initialize lun_qpair_map btree\n"); 6512 return -EIO; 6513 } 6514 h = &tgt->qphints[0]; 6515 h->qpair = ha->base_qpair; 6516 INIT_LIST_HEAD(&h->hint_elem); 6517 h->cpuid = ha->base_qpair->cpuid; 6518 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6519 6520 for (i = 0; i < ha->max_qpairs; i++) { 6521 unsigned long flags; 6522 6523 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6524 6525 h = &tgt->qphints[i + 1]; 6526 INIT_LIST_HEAD(&h->hint_elem); 6527 if (qpair) { 6528 h->qpair = qpair; 6529 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6530 list_add_tail(&h->hint_elem, &qpair->hints_list); 6531 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6532 h->cpuid = qpair->cpuid; 6533 } 6534 } 6535 6536 tgt->ha = ha; 6537 tgt->vha = base_vha; 6538 init_waitqueue_head(&tgt->waitQ); 6539 INIT_LIST_HEAD(&tgt->del_sess_list); 6540 spin_lock_init(&tgt->sess_work_lock); 6541 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6542 INIT_LIST_HEAD(&tgt->sess_works_list); 6543 atomic_set(&tgt->tgt_global_resets_count, 0); 6544 6545 base_vha->vha_tgt.qla_tgt = tgt; 6546 6547 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6548 "qla_target(%d): using 64 Bit PCI addressing", 6549 base_vha->vp_idx); 6550 /* 3 is reserved */ 6551 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6552 6553 mutex_lock(&qla_tgt_mutex); 6554 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6555 mutex_unlock(&qla_tgt_mutex); 6556 6557 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6558 ha->tgt.tgt_ops->add_target(base_vha); 6559 6560 return 0; 6561 } 6562 6563 /* Must be called under tgt_host_action_mutex */ 6564 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6565 { 6566 if (!vha->vha_tgt.qla_tgt) 6567 return 0; 6568 6569 if (vha->fc_vport) { 6570 qlt_release(vha->vha_tgt.qla_tgt); 6571 return 0; 6572 } 6573 6574 /* free left over qfull cmds */ 6575 qlt_init_term_exchange(vha); 6576 6577 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6578 vha->host_no, ha); 6579 qlt_release(vha->vha_tgt.qla_tgt); 6580 6581 return 0; 6582 } 6583 6584 void qla_remove_hostmap(struct qla_hw_data *ha) 6585 { 6586 struct scsi_qla_host *node; 6587 u32 key = 0; 6588 6589 btree_for_each_safe32(&ha->host_map, key, node) 6590 btree_remove32(&ha->host_map, key); 6591 6592 btree_destroy32(&ha->host_map); 6593 } 6594 6595 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6596 unsigned char *b) 6597 { 6598 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6599 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6600 put_unaligned_be64(wwpn, b); 6601 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6602 } 6603 6604 /** 6605 * qlt_lport_register - register lport with external module 6606 * 6607 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6608 * @phys_wwpn: physical port WWPN 6609 * @npiv_wwpn: NPIV WWPN 6610 * @npiv_wwnn: NPIV WWNN 6611 * @callback: lport initialization callback for tcm_qla2xxx code 6612 */ 6613 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6614 u64 npiv_wwpn, u64 npiv_wwnn, 6615 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6616 { 6617 struct qla_tgt *tgt; 6618 struct scsi_qla_host *vha; 6619 struct qla_hw_data *ha; 6620 struct Scsi_Host *host; 6621 unsigned long flags; 6622 int rc; 6623 u8 b[WWN_SIZE]; 6624 6625 mutex_lock(&qla_tgt_mutex); 6626 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6627 vha = tgt->vha; 6628 ha = vha->hw; 6629 6630 host = vha->host; 6631 if (!host) 6632 continue; 6633 6634 if (!(host->hostt->supported_mode & MODE_TARGET)) 6635 continue; 6636 6637 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6638 continue; 6639 6640 spin_lock_irqsave(&ha->hardware_lock, flags); 6641 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6642 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6643 host->host_no); 6644 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6645 continue; 6646 } 6647 if (tgt->tgt_stop) { 6648 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6649 host->host_no); 6650 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6651 continue; 6652 } 6653 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6654 6655 if (!scsi_host_get(host)) { 6656 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6657 "Unable to scsi_host_get() for" 6658 " qla2xxx scsi_host\n"); 6659 continue; 6660 } 6661 qlt_lport_dump(vha, phys_wwpn, b); 6662 6663 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6664 scsi_host_put(host); 6665 continue; 6666 } 6667 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6668 if (rc != 0) 6669 scsi_host_put(host); 6670 6671 mutex_unlock(&qla_tgt_mutex); 6672 return rc; 6673 } 6674 mutex_unlock(&qla_tgt_mutex); 6675 6676 return -ENODEV; 6677 } 6678 EXPORT_SYMBOL(qlt_lport_register); 6679 6680 /** 6681 * qlt_lport_deregister - Degister lport 6682 * 6683 * @vha: Registered scsi_qla_host pointer 6684 */ 6685 void qlt_lport_deregister(struct scsi_qla_host *vha) 6686 { 6687 struct qla_hw_data *ha = vha->hw; 6688 struct Scsi_Host *sh = vha->host; 6689 /* 6690 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6691 */ 6692 vha->vha_tgt.target_lport_ptr = NULL; 6693 ha->tgt.tgt_ops = NULL; 6694 /* 6695 * Release the Scsi_Host reference for the underlying qla2xxx host 6696 */ 6697 scsi_host_put(sh); 6698 } 6699 EXPORT_SYMBOL(qlt_lport_deregister); 6700 6701 /* Must be called under HW lock */ 6702 void qlt_set_mode(struct scsi_qla_host *vha) 6703 { 6704 switch (vha->qlini_mode) { 6705 case QLA2XXX_INI_MODE_DISABLED: 6706 case QLA2XXX_INI_MODE_EXCLUSIVE: 6707 vha->host->active_mode = MODE_TARGET; 6708 break; 6709 case QLA2XXX_INI_MODE_ENABLED: 6710 vha->host->active_mode = MODE_INITIATOR; 6711 break; 6712 case QLA2XXX_INI_MODE_DUAL: 6713 vha->host->active_mode = MODE_DUAL; 6714 break; 6715 default: 6716 break; 6717 } 6718 } 6719 6720 /* Must be called under HW lock */ 6721 static void qlt_clear_mode(struct scsi_qla_host *vha) 6722 { 6723 switch (vha->qlini_mode) { 6724 case QLA2XXX_INI_MODE_DISABLED: 6725 vha->host->active_mode = MODE_UNKNOWN; 6726 break; 6727 case QLA2XXX_INI_MODE_EXCLUSIVE: 6728 vha->host->active_mode = MODE_INITIATOR; 6729 break; 6730 case QLA2XXX_INI_MODE_ENABLED: 6731 case QLA2XXX_INI_MODE_DUAL: 6732 vha->host->active_mode = MODE_INITIATOR; 6733 break; 6734 default: 6735 break; 6736 } 6737 } 6738 6739 /* 6740 * qla_tgt_enable_vha - NO LOCK HELD 6741 * 6742 * host_reset, bring up w/ Target Mode Enabled 6743 */ 6744 void 6745 qlt_enable_vha(struct scsi_qla_host *vha) 6746 { 6747 struct qla_hw_data *ha = vha->hw; 6748 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6749 unsigned long flags; 6750 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6751 6752 if (!tgt) { 6753 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6754 "Unable to locate qla_tgt pointer from" 6755 " struct qla_hw_data\n"); 6756 dump_stack(); 6757 return; 6758 } 6759 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6760 return; 6761 6762 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6763 ha->tgt.num_act_qpairs = ha->max_qpairs; 6764 spin_lock_irqsave(&ha->hardware_lock, flags); 6765 tgt->tgt_stopped = 0; 6766 qlt_set_mode(vha); 6767 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6768 6769 mutex_lock(&ha->optrom_mutex); 6770 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6771 "%s.\n", __func__); 6772 if (vha->vp_idx) { 6773 qla24xx_disable_vp(vha); 6774 qla24xx_enable_vp(vha); 6775 } else { 6776 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6777 qla2xxx_wake_dpc(base_vha); 6778 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6779 QLA_SUCCESS); 6780 } 6781 mutex_unlock(&ha->optrom_mutex); 6782 } 6783 EXPORT_SYMBOL(qlt_enable_vha); 6784 6785 /* 6786 * qla_tgt_disable_vha - NO LOCK HELD 6787 * 6788 * Disable Target Mode and reset the adapter 6789 */ 6790 static void qlt_disable_vha(struct scsi_qla_host *vha) 6791 { 6792 struct qla_hw_data *ha = vha->hw; 6793 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6794 unsigned long flags; 6795 6796 if (!tgt) { 6797 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6798 "Unable to locate qla_tgt pointer from" 6799 " struct qla_hw_data\n"); 6800 dump_stack(); 6801 return; 6802 } 6803 6804 spin_lock_irqsave(&ha->hardware_lock, flags); 6805 qlt_clear_mode(vha); 6806 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6807 6808 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6809 qla2xxx_wake_dpc(vha); 6810 6811 /* 6812 * We are expecting the offline state. 6813 * QLA_FUNCTION_FAILED means that adapter is offline. 6814 */ 6815 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6816 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6817 "adapter is offline\n"); 6818 } 6819 6820 /* 6821 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6822 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6823 * members. 6824 */ 6825 void 6826 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6827 { 6828 vha->vha_tgt.qla_tgt = NULL; 6829 6830 mutex_init(&vha->vha_tgt.tgt_mutex); 6831 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6832 6833 qlt_clear_mode(vha); 6834 6835 /* 6836 * NOTE: Currently the value is kept the same for <24xx and 6837 * >=24xx ISPs. If it is necessary to change it, 6838 * the check should be added for specific ISPs, 6839 * assigning the value appropriately. 6840 */ 6841 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6842 6843 qlt_add_target(ha, vha); 6844 } 6845 6846 u8 6847 qlt_rff_id(struct scsi_qla_host *vha) 6848 { 6849 u8 fc4_feature = 0; 6850 /* 6851 * FC-4 Feature bit 0 indicates target functionality to the name server. 6852 */ 6853 if (qla_tgt_mode_enabled(vha)) { 6854 fc4_feature = BIT_0; 6855 } else if (qla_ini_mode_enabled(vha)) { 6856 fc4_feature = BIT_1; 6857 } else if (qla_dual_mode_enabled(vha)) 6858 fc4_feature = BIT_0 | BIT_1; 6859 6860 return fc4_feature; 6861 } 6862 6863 /* 6864 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6865 * @ha: HA context 6866 * 6867 * Beginning of ATIO ring has initialization control block already built 6868 * by nvram config routine. 6869 * 6870 * Returns 0 on success. 6871 */ 6872 void 6873 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6874 { 6875 struct qla_hw_data *ha = vha->hw; 6876 uint16_t cnt; 6877 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6878 6879 if (qla_ini_mode_enabled(vha)) 6880 return; 6881 6882 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6883 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6884 pkt++; 6885 } 6886 6887 } 6888 6889 /* 6890 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6891 * @ha: SCSI driver HA context 6892 */ 6893 void 6894 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6895 { 6896 struct qla_hw_data *ha = vha->hw; 6897 struct atio_from_isp *pkt; 6898 int cnt, i; 6899 6900 if (!ha->flags.fw_started) 6901 return; 6902 6903 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6904 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6905 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6906 cnt = pkt->u.raw.entry_count; 6907 6908 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6909 /* 6910 * This packet is corrupted. The header + payload 6911 * can not be trusted. There is no point in passing 6912 * it further up. 6913 */ 6914 ql_log(ql_log_warn, vha, 0xd03c, 6915 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6916 &pkt->u.isp24.fcp_hdr.s_id, 6917 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6918 pkt->u.isp24.exchange_addr, pkt); 6919 6920 adjust_corrupted_atio(pkt); 6921 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6922 ha_locked, 0); 6923 } else { 6924 qlt_24xx_atio_pkt_all_vps(vha, 6925 (struct atio_from_isp *)pkt, ha_locked); 6926 } 6927 6928 for (i = 0; i < cnt; i++) { 6929 ha->tgt.atio_ring_index++; 6930 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6931 ha->tgt.atio_ring_index = 0; 6932 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6933 } else 6934 ha->tgt.atio_ring_ptr++; 6935 6936 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6937 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6938 } 6939 wmb(); 6940 } 6941 6942 /* Adjust ring index */ 6943 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6944 } 6945 6946 void 6947 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6948 { 6949 struct qla_hw_data *ha = vha->hw; 6950 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6951 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6952 6953 if (!QLA_TGT_MODE_ENABLED()) 6954 return; 6955 6956 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6957 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6958 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6959 6960 if (ha->flags.msix_enabled) { 6961 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6962 if (IS_QLA2071(ha)) { 6963 /* 4 ports Baker: Enable Interrupt Handshake */ 6964 icb->msix_atio = 0; 6965 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6966 } else { 6967 icb->msix_atio = cpu_to_le16(msix->entry); 6968 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6969 } 6970 ql_dbg(ql_dbg_init, vha, 0xf072, 6971 "Registering ICB vector 0x%x for atio que.\n", 6972 msix->entry); 6973 } 6974 } else { 6975 /* INTx|MSI */ 6976 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6977 icb->msix_atio = 0; 6978 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6979 ql_dbg(ql_dbg_init, vha, 0xf072, 6980 "%s: Use INTx for ATIOQ.\n", __func__); 6981 } 6982 } 6983 } 6984 6985 void 6986 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6987 { 6988 struct qla_hw_data *ha = vha->hw; 6989 u32 tmp; 6990 6991 if (!QLA_TGT_MODE_ENABLED()) 6992 return; 6993 6994 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6995 if (!ha->tgt.saved_set) { 6996 /* We save only once */ 6997 ha->tgt.saved_exchange_count = nv->exchange_count; 6998 ha->tgt.saved_firmware_options_1 = 6999 nv->firmware_options_1; 7000 ha->tgt.saved_firmware_options_2 = 7001 nv->firmware_options_2; 7002 ha->tgt.saved_firmware_options_3 = 7003 nv->firmware_options_3; 7004 ha->tgt.saved_set = 1; 7005 } 7006 7007 if (qla_tgt_mode_enabled(vha)) 7008 nv->exchange_count = cpu_to_le16(0xFFFF); 7009 else /* dual */ 7010 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7011 7012 /* Enable target mode */ 7013 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7014 7015 /* Disable ini mode, if requested */ 7016 if (qla_tgt_mode_enabled(vha)) 7017 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7018 7019 /* Disable Full Login after LIP */ 7020 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7021 /* Enable initial LIP */ 7022 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7023 if (ql2xtgt_tape_enable) 7024 /* Enable FC Tape support */ 7025 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7026 else 7027 /* Disable FC Tape support */ 7028 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7029 7030 /* Disable Full Login after LIP */ 7031 nv->host_p &= cpu_to_le32(~BIT_10); 7032 7033 /* 7034 * clear BIT 15 explicitly as we have seen at least 7035 * a couple of instances where this was set and this 7036 * was causing the firmware to not be initialized. 7037 */ 7038 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7039 /* Enable target PRLI control */ 7040 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7041 7042 if (IS_QLA25XX(ha)) { 7043 /* Change Loop-prefer to Pt-Pt */ 7044 tmp = ~(BIT_4|BIT_5|BIT_6); 7045 nv->firmware_options_2 &= cpu_to_le32(tmp); 7046 tmp = P2P << 4; 7047 nv->firmware_options_2 |= cpu_to_le32(tmp); 7048 } 7049 } else { 7050 if (ha->tgt.saved_set) { 7051 nv->exchange_count = ha->tgt.saved_exchange_count; 7052 nv->firmware_options_1 = 7053 ha->tgt.saved_firmware_options_1; 7054 nv->firmware_options_2 = 7055 ha->tgt.saved_firmware_options_2; 7056 nv->firmware_options_3 = 7057 ha->tgt.saved_firmware_options_3; 7058 } 7059 return; 7060 } 7061 7062 if (ha->base_qpair->enable_class_2) { 7063 if (vha->flags.init_done) 7064 fc_host_supported_classes(vha->host) = 7065 FC_COS_CLASS2 | FC_COS_CLASS3; 7066 7067 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7068 } else { 7069 if (vha->flags.init_done) 7070 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7071 7072 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7073 } 7074 } 7075 7076 void 7077 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7078 struct init_cb_24xx *icb) 7079 { 7080 struct qla_hw_data *ha = vha->hw; 7081 7082 if (!QLA_TGT_MODE_ENABLED()) 7083 return; 7084 7085 if (ha->tgt.node_name_set) { 7086 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7087 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7088 } 7089 } 7090 7091 void 7092 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7093 { 7094 struct qla_hw_data *ha = vha->hw; 7095 u32 tmp; 7096 7097 if (!QLA_TGT_MODE_ENABLED()) 7098 return; 7099 7100 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7101 if (!ha->tgt.saved_set) { 7102 /* We save only once */ 7103 ha->tgt.saved_exchange_count = nv->exchange_count; 7104 ha->tgt.saved_firmware_options_1 = 7105 nv->firmware_options_1; 7106 ha->tgt.saved_firmware_options_2 = 7107 nv->firmware_options_2; 7108 ha->tgt.saved_firmware_options_3 = 7109 nv->firmware_options_3; 7110 ha->tgt.saved_set = 1; 7111 } 7112 7113 if (qla_tgt_mode_enabled(vha)) 7114 nv->exchange_count = cpu_to_le16(0xFFFF); 7115 else /* dual */ 7116 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7117 7118 /* Enable target mode */ 7119 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7120 7121 /* Disable ini mode, if requested */ 7122 if (qla_tgt_mode_enabled(vha)) 7123 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7124 /* Disable Full Login after LIP */ 7125 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7126 /* Enable initial LIP */ 7127 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7128 /* 7129 * clear BIT 15 explicitly as we have seen at 7130 * least a couple of instances where this was set 7131 * and this was causing the firmware to not be 7132 * initialized. 7133 */ 7134 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7135 if (ql2xtgt_tape_enable) 7136 /* Enable FC tape support */ 7137 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7138 else 7139 /* Disable FC tape support */ 7140 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7141 7142 /* Disable Full Login after LIP */ 7143 nv->host_p &= cpu_to_le32(~BIT_10); 7144 /* Enable target PRLI control */ 7145 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7146 7147 /* Change Loop-prefer to Pt-Pt */ 7148 tmp = ~(BIT_4|BIT_5|BIT_6); 7149 nv->firmware_options_2 &= cpu_to_le32(tmp); 7150 tmp = P2P << 4; 7151 nv->firmware_options_2 |= cpu_to_le32(tmp); 7152 } else { 7153 if (ha->tgt.saved_set) { 7154 nv->exchange_count = ha->tgt.saved_exchange_count; 7155 nv->firmware_options_1 = 7156 ha->tgt.saved_firmware_options_1; 7157 nv->firmware_options_2 = 7158 ha->tgt.saved_firmware_options_2; 7159 nv->firmware_options_3 = 7160 ha->tgt.saved_firmware_options_3; 7161 } 7162 return; 7163 } 7164 7165 if (ha->base_qpair->enable_class_2) { 7166 if (vha->flags.init_done) 7167 fc_host_supported_classes(vha->host) = 7168 FC_COS_CLASS2 | FC_COS_CLASS3; 7169 7170 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7171 } else { 7172 if (vha->flags.init_done) 7173 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7174 7175 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7176 } 7177 } 7178 7179 void 7180 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7181 struct init_cb_81xx *icb) 7182 { 7183 struct qla_hw_data *ha = vha->hw; 7184 7185 if (!QLA_TGT_MODE_ENABLED()) 7186 return; 7187 7188 if (ha->tgt.node_name_set) { 7189 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7190 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7191 } 7192 } 7193 7194 void 7195 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7196 { 7197 if (!QLA_TGT_MODE_ENABLED()) 7198 return; 7199 7200 ha->msix_count += 1; /* For ATIO Q */ 7201 } 7202 7203 7204 void 7205 qlt_modify_vp_config(struct scsi_qla_host *vha, 7206 struct vp_config_entry_24xx *vpmod) 7207 { 7208 /* enable target mode. Bit5 = 1 => disable */ 7209 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7210 vpmod->options_idx1 &= ~BIT_5; 7211 7212 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7213 if (qla_tgt_mode_enabled(vha)) 7214 vpmod->options_idx1 &= ~BIT_4; 7215 } 7216 7217 void 7218 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7219 { 7220 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7221 if (!QLA_TGT_MODE_ENABLED()) 7222 return; 7223 7224 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha) || 7225 IS_QLA28XX(ha)) { 7226 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7227 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7228 } else { 7229 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7230 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7231 } 7232 7233 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7234 7235 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7236 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7237 qlt_unknown_atio_work_fn); 7238 7239 qlt_clear_mode(base_vha); 7240 7241 qlt_update_vp_map(base_vha, SET_VP_IDX); 7242 } 7243 7244 irqreturn_t 7245 qla83xx_msix_atio_q(int irq, void *dev_id) 7246 { 7247 struct rsp_que *rsp; 7248 scsi_qla_host_t *vha; 7249 struct qla_hw_data *ha; 7250 unsigned long flags; 7251 7252 rsp = (struct rsp_que *) dev_id; 7253 ha = rsp->hw; 7254 vha = pci_get_drvdata(ha->pdev); 7255 7256 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7257 7258 qlt_24xx_process_atio_queue(vha, 0); 7259 7260 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7261 7262 return IRQ_HANDLED; 7263 } 7264 7265 static void 7266 qlt_handle_abts_recv_work(struct work_struct *work) 7267 { 7268 struct qla_tgt_sess_op *op = container_of(work, 7269 struct qla_tgt_sess_op, work); 7270 scsi_qla_host_t *vha = op->vha; 7271 struct qla_hw_data *ha = vha->hw; 7272 unsigned long flags; 7273 7274 if (qla2x00_reset_active(vha) || 7275 (op->chip_reset != ha->base_qpair->chip_reset)) 7276 return; 7277 7278 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7279 qlt_24xx_process_atio_queue(vha, 0); 7280 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7281 7282 spin_lock_irqsave(&ha->hardware_lock, flags); 7283 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7284 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7285 7286 kfree(op); 7287 } 7288 7289 void 7290 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7291 response_t *pkt) 7292 { 7293 struct qla_tgt_sess_op *op; 7294 7295 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7296 7297 if (!op) { 7298 /* do not reach for ATIO queue here. This is best effort err 7299 * recovery at this point. 7300 */ 7301 qlt_response_pkt_all_vps(vha, rsp, pkt); 7302 return; 7303 } 7304 7305 memcpy(&op->atio, pkt, sizeof(*pkt)); 7306 op->vha = vha; 7307 op->chip_reset = vha->hw->base_qpair->chip_reset; 7308 op->rsp = rsp; 7309 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7310 queue_work(qla_tgt_wq, &op->work); 7311 return; 7312 } 7313 7314 int 7315 qlt_mem_alloc(struct qla_hw_data *ha) 7316 { 7317 if (!QLA_TGT_MODE_ENABLED()) 7318 return 0; 7319 7320 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7321 sizeof(struct qla_tgt_vp_map), 7322 GFP_KERNEL); 7323 if (!ha->tgt.tgt_vp_map) 7324 return -ENOMEM; 7325 7326 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7327 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7328 &ha->tgt.atio_dma, GFP_KERNEL); 7329 if (!ha->tgt.atio_ring) { 7330 kfree(ha->tgt.tgt_vp_map); 7331 return -ENOMEM; 7332 } 7333 return 0; 7334 } 7335 7336 void 7337 qlt_mem_free(struct qla_hw_data *ha) 7338 { 7339 if (!QLA_TGT_MODE_ENABLED()) 7340 return; 7341 7342 if (ha->tgt.atio_ring) { 7343 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7344 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7345 ha->tgt.atio_dma); 7346 } 7347 ha->tgt.atio_ring = NULL; 7348 ha->tgt.atio_dma = 0; 7349 kfree(ha->tgt.tgt_vp_map); 7350 ha->tgt.tgt_vp_map = NULL; 7351 } 7352 7353 /* vport_slock to be held by the caller */ 7354 void 7355 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7356 { 7357 void *slot; 7358 u32 key; 7359 int rc; 7360 7361 key = vha->d_id.b24; 7362 7363 switch (cmd) { 7364 case SET_VP_IDX: 7365 if (!QLA_TGT_MODE_ENABLED()) 7366 return; 7367 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7368 break; 7369 case SET_AL_PA: 7370 slot = btree_lookup32(&vha->hw->host_map, key); 7371 if (!slot) { 7372 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7373 "Save vha in host_map %p %06x\n", vha, key); 7374 rc = btree_insert32(&vha->hw->host_map, 7375 key, vha, GFP_ATOMIC); 7376 if (rc) 7377 ql_log(ql_log_info, vha, 0xd03e, 7378 "Unable to insert s_id into host_map: %06x\n", 7379 key); 7380 return; 7381 } 7382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7383 "replace existing vha in host_map %p %06x\n", vha, key); 7384 btree_update32(&vha->hw->host_map, key, vha); 7385 break; 7386 case RESET_VP_IDX: 7387 if (!QLA_TGT_MODE_ENABLED()) 7388 return; 7389 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7390 break; 7391 case RESET_AL_PA: 7392 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7393 "clear vha in host_map %p %06x\n", vha, key); 7394 slot = btree_lookup32(&vha->hw->host_map, key); 7395 if (slot) 7396 btree_remove32(&vha->hw->host_map, key); 7397 vha->d_id.b24 = 0; 7398 break; 7399 } 7400 } 7401 7402 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7403 { 7404 7405 if (!vha->d_id.b24) { 7406 vha->d_id = id; 7407 qlt_update_vp_map(vha, SET_AL_PA); 7408 } else if (vha->d_id.b24 != id.b24) { 7409 qlt_update_vp_map(vha, RESET_AL_PA); 7410 vha->d_id = id; 7411 qlt_update_vp_map(vha, SET_AL_PA); 7412 } 7413 } 7414 7415 static int __init qlt_parse_ini_mode(void) 7416 { 7417 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7418 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7419 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7420 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7421 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7422 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7423 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7424 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7425 else 7426 return false; 7427 7428 return true; 7429 } 7430 7431 int __init qlt_init(void) 7432 { 7433 int ret; 7434 7435 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7436 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7437 7438 if (!qlt_parse_ini_mode()) { 7439 ql_log(ql_log_fatal, NULL, 0xe06b, 7440 "qlt_parse_ini_mode() failed\n"); 7441 return -EINVAL; 7442 } 7443 7444 if (!QLA_TGT_MODE_ENABLED()) 7445 return 0; 7446 7447 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7448 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7449 qla_tgt_mgmt_cmd), 0, NULL); 7450 if (!qla_tgt_mgmt_cmd_cachep) { 7451 ql_log(ql_log_fatal, NULL, 0xd04b, 7452 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7453 return -ENOMEM; 7454 } 7455 7456 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7457 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7458 0, NULL); 7459 7460 if (!qla_tgt_plogi_cachep) { 7461 ql_log(ql_log_fatal, NULL, 0xe06d, 7462 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7463 ret = -ENOMEM; 7464 goto out_mgmt_cmd_cachep; 7465 } 7466 7467 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7468 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7469 if (!qla_tgt_mgmt_cmd_mempool) { 7470 ql_log(ql_log_fatal, NULL, 0xe06e, 7471 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7472 ret = -ENOMEM; 7473 goto out_plogi_cachep; 7474 } 7475 7476 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7477 if (!qla_tgt_wq) { 7478 ql_log(ql_log_fatal, NULL, 0xe06f, 7479 "alloc_workqueue for qla_tgt_wq failed\n"); 7480 ret = -ENOMEM; 7481 goto out_cmd_mempool; 7482 } 7483 /* 7484 * Return 1 to signal that initiator-mode is being disabled 7485 */ 7486 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7487 7488 out_cmd_mempool: 7489 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7490 out_plogi_cachep: 7491 kmem_cache_destroy(qla_tgt_plogi_cachep); 7492 out_mgmt_cmd_cachep: 7493 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7494 return ret; 7495 } 7496 7497 void qlt_exit(void) 7498 { 7499 if (!QLA_TGT_MODE_ENABLED()) 7500 return; 7501 7502 destroy_workqueue(qla_tgt_wq); 7503 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7504 kmem_cache_destroy(qla_tgt_plogi_cachep); 7505 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7506 } 7507