1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/blkdev.h> 21 #include <linux/interrupt.h> 22 #include <linux/pci.h> 23 #include <linux/delay.h> 24 #include <linux/list.h> 25 #include <linux/workqueue.h> 26 #include <asm/unaligned.h> 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_host.h> 29 #include <scsi/scsi_tcq.h> 30 31 #include "qla_def.h" 32 #include "qla_target.h" 33 34 static int ql2xtgt_tape_enable; 35 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36 MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40 module_param(qlini_mode, charp, S_IRUGO); 41 MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51 static int ql_dm_tgt_ex_pct = 0; 52 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 53 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 54 "For Dual Mode (qlini_mode=dual), this parameter determines " 55 "the percentage of exchanges/cmds FW will allocate resources " 56 "for Target mode."); 57 58 int ql2xuctrlirq = 1; 59 module_param(ql2xuctrlirq, int, 0644); 60 MODULE_PARM_DESC(ql2xuctrlirq, 61 "User to control IRQ placement via smp_affinity." 62 "Valid with qlini_mode=disabled." 63 "1(default): enable"); 64 65 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 66 67 static int qla_sam_status = SAM_STAT_BUSY; 68 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 69 70 /* 71 * From scsi/fc/fc_fcp.h 72 */ 73 enum fcp_resp_rsp_codes { 74 FCP_TMF_CMPL = 0, 75 FCP_DATA_LEN_INVALID = 1, 76 FCP_CMND_FIELDS_INVALID = 2, 77 FCP_DATA_PARAM_MISMATCH = 3, 78 FCP_TMF_REJECTED = 4, 79 FCP_TMF_FAILED = 5, 80 FCP_TMF_INVALID_LUN = 9, 81 }; 82 83 /* 84 * fc_pri_ta from scsi/fc/fc_fcp.h 85 */ 86 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 87 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 88 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 89 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 90 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 91 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 92 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 93 94 /* 95 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 96 * must be called under HW lock and could unlock/lock it inside. 97 * It isn't an issue, since in the current implementation on the time when 98 * those functions are called: 99 * 100 * - Either context is IRQ and only IRQ handler can modify HW data, 101 * including rings related fields, 102 * 103 * - Or access to target mode variables from struct qla_tgt doesn't 104 * cross those functions boundaries, except tgt_stop, which 105 * additionally protected by irq_cmd_count. 106 */ 107 /* Predefs for callbacks handed to qla2xxx LLD */ 108 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 109 struct atio_from_isp *pkt, uint8_t); 110 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 111 response_t *pkt); 112 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 113 int fn, void *iocb, int flags); 114 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 115 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 116 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 117 struct atio_from_isp *atio, uint16_t status, int qfull); 118 static void qlt_disable_vha(struct scsi_qla_host *vha); 119 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 120 static void qlt_send_notify_ack(struct qla_qpair *qpair, 121 struct imm_ntfy_from_isp *ntfy, 122 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 123 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 124 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *imm, int ha_locked); 126 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 127 fc_port_t *fcport, bool local); 128 void qlt_unreg_sess(struct fc_port *sess); 129 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 130 struct abts_recv_from_24xx *); 131 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 132 uint16_t); 133 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 134 static inline uint32_t qlt_make_handle(struct qla_qpair *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 struct kmem_cache *qla_tgt_plogi_cachep; 141 static mempool_t *qla_tgt_mgmt_cmd_mempool; 142 static struct workqueue_struct *qla_tgt_wq; 143 static DEFINE_MUTEX(qla_tgt_mutex); 144 static LIST_HEAD(qla_tgt_glist); 145 146 static const char *prot_op_str(u32 prot_op) 147 { 148 switch (prot_op) { 149 case TARGET_PROT_NORMAL: return "NORMAL"; 150 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 151 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 152 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 153 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 154 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 155 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 156 default: return "UNKNOWN"; 157 } 158 } 159 160 /* This API intentionally takes dest as a parameter, rather than returning 161 * int value to avoid caller forgetting to issue wmb() after the store */ 162 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 163 { 164 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 165 *dest = atomic_inc_return(&base_vha->generation_tick); 166 /* memory barrier */ 167 wmb(); 168 } 169 170 /* Might release hw lock, then reaquire!! */ 171 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 172 { 173 /* Send marker if required */ 174 if (unlikely(vha->marker_needed != 0)) { 175 int rc = qla2x00_issue_marker(vha, vha_locked); 176 177 if (rc != QLA_SUCCESS) { 178 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 179 "qla_target(%d): issue_marker() failed\n", 180 vha->vp_idx); 181 } 182 return rc; 183 } 184 return QLA_SUCCESS; 185 } 186 187 struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, 188 be_id_t d_id) 189 { 190 struct scsi_qla_host *host; 191 uint32_t key; 192 193 if (vha->d_id.b.area == d_id.area && 194 vha->d_id.b.domain == d_id.domain && 195 vha->d_id.b.al_pa == d_id.al_pa) 196 return vha; 197 198 key = be_to_port_id(d_id).b24; 199 200 host = btree_lookup32(&vha->hw->host_map, key); 201 if (!host) 202 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 203 "Unable to find host %06x\n", key); 204 205 return host; 206 } 207 208 static inline 209 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 210 uint16_t vp_idx) 211 { 212 struct qla_hw_data *ha = vha->hw; 213 214 if (vha->vp_idx == vp_idx) 215 return vha; 216 217 BUG_ON(ha->tgt.tgt_vp_map == NULL); 218 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 219 return ha->tgt.tgt_vp_map[vp_idx].vha; 220 221 return NULL; 222 } 223 224 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 225 { 226 unsigned long flags; 227 228 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 229 230 vha->hw->tgt.num_pend_cmds++; 231 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 232 vha->qla_stats.stat_max_pend_cmds = 233 vha->hw->tgt.num_pend_cmds; 234 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 235 } 236 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 237 { 238 unsigned long flags; 239 240 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 241 vha->hw->tgt.num_pend_cmds--; 242 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 243 } 244 245 246 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 247 struct atio_from_isp *atio, uint8_t ha_locked) 248 { 249 struct qla_tgt_sess_op *u; 250 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 251 unsigned long flags; 252 253 if (tgt->tgt_stop) { 254 ql_dbg(ql_dbg_async, vha, 0x502c, 255 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 256 vha->vp_idx); 257 goto out_term; 258 } 259 260 u = kzalloc(sizeof(*u), GFP_ATOMIC); 261 if (u == NULL) 262 goto out_term; 263 264 u->vha = vha; 265 memcpy(&u->atio, atio, sizeof(*atio)); 266 INIT_LIST_HEAD(&u->cmd_list); 267 268 spin_lock_irqsave(&vha->cmd_list_lock, flags); 269 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 270 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 271 272 schedule_delayed_work(&vha->unknown_atio_work, 1); 273 274 out: 275 return; 276 277 out_term: 278 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 279 goto out; 280 } 281 282 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 283 uint8_t ha_locked) 284 { 285 struct qla_tgt_sess_op *u, *t; 286 scsi_qla_host_t *host; 287 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 288 unsigned long flags; 289 uint8_t queued = 0; 290 291 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 292 if (u->aborted) { 293 ql_dbg(ql_dbg_async, vha, 0x502e, 294 "Freeing unknown %s %p, because of Abort\n", 295 "ATIO_TYPE7", u); 296 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 297 &u->atio, ha_locked, 0); 298 goto abort; 299 } 300 301 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 302 if (host != NULL) { 303 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 304 "Requeuing unknown ATIO_TYPE7 %p\n", u); 305 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 306 } else if (tgt->tgt_stop) { 307 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 308 "Freeing unknown %s %p, because tgt is being stopped\n", 309 "ATIO_TYPE7", u); 310 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 311 &u->atio, ha_locked, 0); 312 } else { 313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 314 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 315 if (!queued) { 316 queued = 1; 317 schedule_delayed_work(&vha->unknown_atio_work, 318 1); 319 } 320 continue; 321 } 322 323 abort: 324 spin_lock_irqsave(&vha->cmd_list_lock, flags); 325 list_del(&u->cmd_list); 326 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 327 kfree(u); 328 } 329 } 330 331 void qlt_unknown_atio_work_fn(struct work_struct *work) 332 { 333 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 334 struct scsi_qla_host, unknown_atio_work); 335 336 qlt_try_to_dequeue_unknown_atios(vha, 0); 337 } 338 339 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 340 struct atio_from_isp *atio, uint8_t ha_locked) 341 { 342 ql_dbg(ql_dbg_tgt, vha, 0xe072, 343 "%s: qla_target(%d): type %x ox_id %04x\n", 344 __func__, vha->vp_idx, atio->u.raw.entry_type, 345 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 346 347 switch (atio->u.raw.entry_type) { 348 case ATIO_TYPE7: 349 { 350 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 351 atio->u.isp24.fcp_hdr.d_id); 352 if (unlikely(NULL == host)) { 353 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 354 "qla_target(%d): Received ATIO_TYPE7 " 355 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 356 atio->u.isp24.fcp_hdr.d_id.domain, 357 atio->u.isp24.fcp_hdr.d_id.area, 358 atio->u.isp24.fcp_hdr.d_id.al_pa); 359 360 361 qlt_queue_unknown_atio(vha, atio, ha_locked); 362 break; 363 } 364 if (unlikely(!list_empty(&vha->unknown_atio_list))) 365 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 366 367 qlt_24xx_atio_pkt(host, atio, ha_locked); 368 break; 369 } 370 371 case IMMED_NOTIFY_TYPE: 372 { 373 struct scsi_qla_host *host = vha; 374 struct imm_ntfy_from_isp *entry = 375 (struct imm_ntfy_from_isp *)atio; 376 377 qlt_issue_marker(vha, ha_locked); 378 379 if ((entry->u.isp24.vp_index != 0xFF) && 380 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 381 host = qlt_find_host_by_vp_idx(vha, 382 entry->u.isp24.vp_index); 383 if (unlikely(!host)) { 384 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 385 "qla_target(%d): Received " 386 "ATIO (IMMED_NOTIFY_TYPE) " 387 "with unknown vp_index %d\n", 388 vha->vp_idx, entry->u.isp24.vp_index); 389 break; 390 } 391 } 392 qlt_24xx_atio_pkt(host, atio, ha_locked); 393 break; 394 } 395 396 case VP_RPT_ID_IOCB_TYPE: 397 qla24xx_report_id_acquisition(vha, 398 (struct vp_rpt_id_entry_24xx *)atio); 399 break; 400 401 case ABTS_RECV_24XX: 402 { 403 struct abts_recv_from_24xx *entry = 404 (struct abts_recv_from_24xx *)atio; 405 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 406 entry->vp_index); 407 unsigned long flags; 408 409 if (unlikely(!host)) { 410 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 411 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 412 "received, with unknown vp_index %d\n", 413 vha->vp_idx, entry->vp_index); 414 break; 415 } 416 if (!ha_locked) 417 spin_lock_irqsave(&host->hw->hardware_lock, flags); 418 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 419 if (!ha_locked) 420 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 421 break; 422 } 423 424 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 425 426 default: 427 ql_dbg(ql_dbg_tgt, vha, 0xe040, 428 "qla_target(%d): Received unknown ATIO atio " 429 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 430 break; 431 } 432 433 return false; 434 } 435 436 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 437 struct rsp_que *rsp, response_t *pkt) 438 { 439 switch (pkt->entry_type) { 440 case CTIO_CRC2: 441 ql_dbg(ql_dbg_tgt, vha, 0xe073, 442 "qla_target(%d):%s: CRC2 Response pkt\n", 443 vha->vp_idx, __func__); 444 fallthrough; 445 case CTIO_TYPE7: 446 { 447 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 448 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 449 entry->vp_index); 450 if (unlikely(!host)) { 451 ql_dbg(ql_dbg_tgt, vha, 0xe041, 452 "qla_target(%d): Response pkt (CTIO_TYPE7) " 453 "received, with unknown vp_index %d\n", 454 vha->vp_idx, entry->vp_index); 455 break; 456 } 457 qlt_response_pkt(host, rsp, pkt); 458 break; 459 } 460 461 case IMMED_NOTIFY_TYPE: 462 { 463 struct scsi_qla_host *host; 464 struct imm_ntfy_from_isp *entry = 465 (struct imm_ntfy_from_isp *)pkt; 466 467 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 468 if (unlikely(!host)) { 469 ql_dbg(ql_dbg_tgt, vha, 0xe042, 470 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 471 "received, with unknown vp_index %d\n", 472 vha->vp_idx, entry->u.isp24.vp_index); 473 break; 474 } 475 qlt_response_pkt(host, rsp, pkt); 476 break; 477 } 478 479 case NOTIFY_ACK_TYPE: 480 { 481 struct scsi_qla_host *host = vha; 482 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 483 484 if (0xFF != entry->u.isp24.vp_index) { 485 host = qlt_find_host_by_vp_idx(vha, 486 entry->u.isp24.vp_index); 487 if (unlikely(!host)) { 488 ql_dbg(ql_dbg_tgt, vha, 0xe043, 489 "qla_target(%d): Response " 490 "pkt (NOTIFY_ACK_TYPE) " 491 "received, with unknown " 492 "vp_index %d\n", vha->vp_idx, 493 entry->u.isp24.vp_index); 494 break; 495 } 496 } 497 qlt_response_pkt(host, rsp, pkt); 498 break; 499 } 500 501 case ABTS_RECV_24XX: 502 { 503 struct abts_recv_from_24xx *entry = 504 (struct abts_recv_from_24xx *)pkt; 505 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 506 entry->vp_index); 507 if (unlikely(!host)) { 508 ql_dbg(ql_dbg_tgt, vha, 0xe044, 509 "qla_target(%d): Response pkt " 510 "(ABTS_RECV_24XX) received, with unknown " 511 "vp_index %d\n", vha->vp_idx, entry->vp_index); 512 break; 513 } 514 qlt_response_pkt(host, rsp, pkt); 515 break; 516 } 517 518 case ABTS_RESP_24XX: 519 { 520 struct abts_resp_to_24xx *entry = 521 (struct abts_resp_to_24xx *)pkt; 522 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 523 entry->vp_index); 524 if (unlikely(!host)) { 525 ql_dbg(ql_dbg_tgt, vha, 0xe045, 526 "qla_target(%d): Response pkt " 527 "(ABTS_RECV_24XX) received, with unknown " 528 "vp_index %d\n", vha->vp_idx, entry->vp_index); 529 break; 530 } 531 qlt_response_pkt(host, rsp, pkt); 532 break; 533 } 534 default: 535 qlt_response_pkt(vha, rsp, pkt); 536 break; 537 } 538 539 } 540 541 /* 542 * All qlt_plogi_ack_t operations are protected by hardware_lock 543 */ 544 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 545 struct imm_ntfy_from_isp *ntfy, int type) 546 { 547 struct qla_work_evt *e; 548 549 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 550 if (!e) 551 return QLA_FUNCTION_FAILED; 552 553 e->u.nack.fcport = fcport; 554 e->u.nack.type = type; 555 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 556 return qla2x00_post_work(vha, e); 557 } 558 559 static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 560 { 561 struct scsi_qla_host *vha = sp->vha; 562 unsigned long flags; 563 564 ql_dbg(ql_dbg_disc, vha, 0x20f2, 565 "Async done-%s res %x %8phC type %d\n", 566 sp->name, res, sp->fcport->port_name, sp->type); 567 568 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 569 sp->fcport->flags &= ~FCF_ASYNC_SENT; 570 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 571 572 switch (sp->type) { 573 case SRB_NACK_PLOGI: 574 sp->fcport->login_gen++; 575 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 576 sp->fcport->logout_on_delete = 1; 577 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 578 sp->fcport->send_els_logo = 0; 579 580 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 581 ql_dbg(ql_dbg_edif, vha, 0x20ef, 582 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 583 sp->fcport->port_name); 584 qla2x00_set_fcport_disc_state(sp->fcport, 585 DSC_LOGIN_AUTH_PEND); 586 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 587 sp->fcport->d_id.b24); 588 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 589 0, sp->fcport); 590 } 591 break; 592 593 case SRB_NACK_PRLI: 594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 595 sp->fcport->deleted = 0; 596 sp->fcport->send_els_logo = 0; 597 598 if (!sp->fcport->login_succ && 599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 600 sp->fcport->login_succ = 1; 601 602 vha->fcport_count++; 603 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 604 qla24xx_sched_upd_fcport(sp->fcport); 605 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 606 } else { 607 sp->fcport->login_retry = 0; 608 qla2x00_set_fcport_disc_state(sp->fcport, 609 DSC_LOGIN_COMPLETE); 610 sp->fcport->deleted = 0; 611 sp->fcport->logout_on_delete = 1; 612 } 613 break; 614 615 case SRB_NACK_LOGO: 616 sp->fcport->login_gen++; 617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 619 break; 620 } 621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 622 623 kref_put(&sp->cmd_kref, qla2x00_sp_release); 624 } 625 626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 627 struct imm_ntfy_from_isp *ntfy, int type) 628 { 629 int rval = QLA_FUNCTION_FAILED; 630 srb_t *sp; 631 char *c = NULL; 632 633 fcport->flags |= FCF_ASYNC_SENT; 634 switch (type) { 635 case SRB_NACK_PLOGI: 636 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 637 c = "PLOGI"; 638 if (vha->hw->flags.edif_enabled && 639 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) 640 fcport->flags |= FCF_FCSP_DEVICE; 641 break; 642 case SRB_NACK_PRLI: 643 fcport->fw_login_state = DSC_LS_PRLI_PEND; 644 fcport->deleted = 0; 645 c = "PRLI"; 646 break; 647 case SRB_NACK_LOGO: 648 fcport->fw_login_state = DSC_LS_LOGO_PEND; 649 c = "LOGO"; 650 break; 651 } 652 653 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 654 if (!sp) 655 goto done; 656 657 sp->type = type; 658 sp->name = "nack"; 659 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, 660 qla2x00_async_nack_sp_done); 661 662 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 663 664 ql_dbg(ql_dbg_disc, vha, 0x20f4, 665 "Async-%s %8phC hndl %x %s\n", 666 sp->name, fcport->port_name, sp->handle, c); 667 668 rval = qla2x00_start_sp(sp); 669 if (rval != QLA_SUCCESS) 670 goto done_free_sp; 671 672 return rval; 673 674 done_free_sp: 675 kref_put(&sp->cmd_kref, qla2x00_sp_release); 676 done: 677 fcport->flags &= ~FCF_ASYNC_SENT; 678 return rval; 679 } 680 681 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 682 { 683 fc_port_t *t; 684 685 switch (e->u.nack.type) { 686 case SRB_NACK_PRLI: 687 t = e->u.nack.fcport; 688 flush_work(&t->del_work); 689 flush_work(&t->free_work); 690 mutex_lock(&vha->vha_tgt.tgt_mutex); 691 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 692 mutex_unlock(&vha->vha_tgt.tgt_mutex); 693 if (t) { 694 ql_log(ql_log_info, vha, 0xd034, 695 "%s create sess success %p", __func__, t); 696 /* create sess has an extra kref */ 697 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 698 } 699 break; 700 } 701 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 702 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 703 } 704 705 void qla24xx_delete_sess_fn(struct work_struct *work) 706 { 707 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 708 struct qla_hw_data *ha = NULL; 709 710 if (!fcport || !fcport->vha || !fcport->vha->hw) 711 return; 712 713 ha = fcport->vha->hw; 714 715 if (fcport->se_sess) { 716 ha->tgt.tgt_ops->shutdown_sess(fcport); 717 ha->tgt.tgt_ops->put_sess(fcport); 718 } else { 719 qlt_unreg_sess(fcport); 720 } 721 } 722 723 /* 724 * Called from qla2x00_reg_remote_port() 725 */ 726 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 727 { 728 struct qla_hw_data *ha = vha->hw; 729 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 730 struct fc_port *sess = fcport; 731 unsigned long flags; 732 733 if (!vha->hw->tgt.tgt_ops) 734 return; 735 736 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 737 if (tgt->tgt_stop) { 738 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 739 return; 740 } 741 742 if (fcport->disc_state == DSC_DELETE_PEND) { 743 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 744 return; 745 } 746 747 if (!sess->se_sess) { 748 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 749 750 mutex_lock(&vha->vha_tgt.tgt_mutex); 751 sess = qlt_create_sess(vha, fcport, false); 752 mutex_unlock(&vha->vha_tgt.tgt_mutex); 753 754 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 755 } else { 756 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 757 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 758 return; 759 } 760 761 if (!kref_get_unless_zero(&sess->sess_kref)) { 762 ql_dbg(ql_dbg_disc, vha, 0x2107, 763 "%s: kref_get fail sess %8phC \n", 764 __func__, sess->port_name); 765 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 766 return; 767 } 768 769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 770 "qla_target(%u): %ssession for port %8phC " 771 "(loop ID %d) reappeared\n", vha->vp_idx, 772 sess->local ? "local " : "", sess->port_name, sess->loop_id); 773 774 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 775 "Reappeared sess %p\n", sess); 776 777 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 778 fcport->loop_id, 779 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 780 } 781 782 if (sess && sess->local) { 783 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 784 "qla_target(%u): local session for " 785 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 786 fcport->port_name, sess->loop_id); 787 sess->local = 0; 788 } 789 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 790 791 ha->tgt.tgt_ops->put_sess(sess); 792 } 793 794 /* 795 * This is a zero-base ref-counting solution, since hardware_lock 796 * guarantees that ref_count is not modified concurrently. 797 * Upon successful return content of iocb is undefined 798 */ 799 static struct qlt_plogi_ack_t * 800 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 801 struct imm_ntfy_from_isp *iocb) 802 { 803 struct qlt_plogi_ack_t *pla; 804 805 lockdep_assert_held(&vha->hw->hardware_lock); 806 807 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 808 if (pla->id.b24 == id->b24) { 809 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 810 "%s %d %8phC Term INOT due to new INOT", 811 __func__, __LINE__, 812 pla->iocb.u.isp24.port_name); 813 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 814 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 815 return pla; 816 } 817 } 818 819 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 820 if (!pla) { 821 ql_dbg(ql_dbg_async, vha, 0x5088, 822 "qla_target(%d): Allocation of plogi_ack failed\n", 823 vha->vp_idx); 824 return NULL; 825 } 826 827 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 828 pla->id = *id; 829 list_add_tail(&pla->list, &vha->plogi_ack_list); 830 831 return pla; 832 } 833 834 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 835 struct qlt_plogi_ack_t *pla) 836 { 837 struct imm_ntfy_from_isp *iocb = &pla->iocb; 838 port_id_t port_id; 839 uint16_t loop_id; 840 fc_port_t *fcport = pla->fcport; 841 842 BUG_ON(!pla->ref_count); 843 pla->ref_count--; 844 845 if (pla->ref_count) 846 return; 847 848 ql_dbg(ql_dbg_disc, vha, 0x5089, 849 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 850 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 851 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 852 iocb->u.isp24.port_id[0], 853 le16_to_cpu(iocb->u.isp24.nport_handle), 854 iocb->u.isp24.exchange_address, iocb->ox_id); 855 856 port_id.b.domain = iocb->u.isp24.port_id[2]; 857 port_id.b.area = iocb->u.isp24.port_id[1]; 858 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 859 port_id.b.rsvd_1 = 0; 860 861 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 862 863 fcport->loop_id = loop_id; 864 fcport->d_id = port_id; 865 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 866 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 867 else 868 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 869 870 list_for_each_entry(fcport, &vha->vp_fcports, list) { 871 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 872 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 873 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 874 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 875 } 876 877 list_del(&pla->list); 878 kmem_cache_free(qla_tgt_plogi_cachep, pla); 879 } 880 881 void 882 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 883 struct fc_port *sess, enum qlt_plogi_link_t link) 884 { 885 struct imm_ntfy_from_isp *iocb = &pla->iocb; 886 /* Inc ref_count first because link might already be pointing at pla */ 887 pla->ref_count++; 888 889 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 890 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 891 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 892 sess, link, sess->port_name, 893 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 894 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 895 pla->ref_count, pla, link); 896 897 if (link == QLT_PLOGI_LINK_CONFLICT) { 898 switch (sess->disc_state) { 899 case DSC_DELETED: 900 case DSC_DELETE_PEND: 901 pla->ref_count--; 902 return; 903 default: 904 break; 905 } 906 } 907 908 if (sess->plogi_link[link]) 909 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 910 911 if (link == QLT_PLOGI_LINK_SAME_WWN) 912 pla->fcport = sess; 913 914 sess->plogi_link[link] = pla; 915 } 916 917 typedef struct { 918 /* These fields must be initialized by the caller */ 919 port_id_t id; 920 /* 921 * number of cmds dropped while we were waiting for 922 * initiator to ack LOGO initialize to 1 if LOGO is 923 * triggered by a command, otherwise, to 0 924 */ 925 int cmd_count; 926 927 /* These fields are used by callee */ 928 struct list_head list; 929 } qlt_port_logo_t; 930 931 static void 932 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 933 { 934 qlt_port_logo_t *tmp; 935 int res; 936 937 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 938 res = 0; 939 goto out; 940 } 941 942 mutex_lock(&vha->vha_tgt.tgt_mutex); 943 944 list_for_each_entry(tmp, &vha->logo_list, list) { 945 if (tmp->id.b24 == logo->id.b24) { 946 tmp->cmd_count += logo->cmd_count; 947 mutex_unlock(&vha->vha_tgt.tgt_mutex); 948 return; 949 } 950 } 951 952 list_add_tail(&logo->list, &vha->logo_list); 953 954 mutex_unlock(&vha->vha_tgt.tgt_mutex); 955 956 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 957 958 mutex_lock(&vha->vha_tgt.tgt_mutex); 959 list_del(&logo->list); 960 mutex_unlock(&vha->vha_tgt.tgt_mutex); 961 962 out: 963 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 964 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 965 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 966 logo->cmd_count, res); 967 } 968 969 void qlt_free_session_done(struct work_struct *work) 970 { 971 struct fc_port *sess = container_of(work, struct fc_port, 972 free_work); 973 struct qla_tgt *tgt = sess->tgt; 974 struct scsi_qla_host *vha = sess->vha; 975 struct qla_hw_data *ha = vha->hw; 976 unsigned long flags; 977 bool logout_started = false; 978 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 979 struct qlt_plogi_ack_t *own = 980 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 981 982 ql_dbg(ql_dbg_disc, vha, 0xf084, 983 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 984 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 985 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 986 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 987 sess->logout_on_delete, sess->keep_nport_handle, 988 sess->send_els_logo); 989 990 if (!IS_SW_RESV_ADDR(sess->d_id)) { 991 if (ha->flags.edif_enabled && 992 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 993 sess->edif.authok = 0; 994 if (!ha->flags.host_shutting_down) { 995 ql_dbg(ql_dbg_edif, vha, 0x911e, 996 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 997 __func__, sess->port_name); 998 qla2x00_release_all_sadb(vha, sess); 999 } else { 1000 ql_dbg(ql_dbg_edif, vha, 0x911e, 1001 "%s bypassing release_all_sadb\n", 1002 __func__); 1003 } 1004 qla_edif_clear_appdata(vha, sess); 1005 qla_edif_sess_down(vha, sess); 1006 } 1007 qla2x00_mark_device_lost(vha, sess, 0); 1008 1009 if (sess->send_els_logo) { 1010 qlt_port_logo_t logo; 1011 1012 logo.id = sess->d_id; 1013 logo.cmd_count = 0; 1014 INIT_LIST_HEAD(&logo.list); 1015 if (!own) 1016 qlt_send_first_logo(vha, &logo); 1017 sess->send_els_logo = 0; 1018 } 1019 1020 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 1021 int rc; 1022 1023 if (!own || 1024 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1025 sess->logout_completed = 0; 1026 rc = qla2x00_post_async_logout_work(vha, sess, 1027 NULL); 1028 if (rc != QLA_SUCCESS) 1029 ql_log(ql_log_warn, vha, 0xf085, 1030 "Schedule logo failed sess %p rc %d\n", 1031 sess, rc); 1032 else 1033 logout_started = true; 1034 } else if (own && (own->iocb.u.isp24.status_subcode == 1035 ELS_PRLI) && ha->flags.rida_fmt2) { 1036 rc = qla2x00_post_async_prlo_work(vha, sess, 1037 NULL); 1038 if (rc != QLA_SUCCESS) 1039 ql_log(ql_log_warn, vha, 0xf085, 1040 "Schedule PRLO failed sess %p rc %d\n", 1041 sess, rc); 1042 else 1043 logout_started = true; 1044 } 1045 } /* if sess->logout_on_delete */ 1046 1047 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1048 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1049 sess->nvme_flag |= NVME_FLAG_DELETING; 1050 qla_nvme_unregister_remote_port(sess); 1051 } 1052 } 1053 1054 /* 1055 * Release the target session for FC Nexus from fabric module code. 1056 */ 1057 if (sess->se_sess != NULL) 1058 ha->tgt.tgt_ops->free_session(sess); 1059 1060 if (logout_started) { 1061 bool traced = false; 1062 u16 cnt = 0; 1063 1064 while (!READ_ONCE(sess->logout_completed)) { 1065 if (!traced) { 1066 ql_dbg(ql_dbg_disc, vha, 0xf086, 1067 "%s: waiting for sess %p logout\n", 1068 __func__, sess); 1069 traced = true; 1070 } 1071 msleep(100); 1072 cnt++; 1073 /* 1074 * Driver timeout is set to 22 Sec, update count value to loop 1075 * long enough for log-out to complete before advancing. Otherwise, 1076 * straddling logout can interfere with re-login attempt. 1077 */ 1078 if (cnt > 230) 1079 break; 1080 } 1081 1082 ql_dbg(ql_dbg_disc, vha, 0xf087, 1083 "%s: sess %p logout completed\n", __func__, sess); 1084 } 1085 1086 if (sess->logo_ack_needed) { 1087 sess->logo_ack_needed = 0; 1088 qla24xx_async_notify_ack(vha, sess, 1089 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1090 } 1091 1092 spin_lock_irqsave(&vha->work_lock, flags); 1093 sess->flags &= ~FCF_ASYNC_SENT; 1094 spin_unlock_irqrestore(&vha->work_lock, flags); 1095 1096 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1097 if (sess->se_sess) { 1098 sess->se_sess = NULL; 1099 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1100 tgt->sess_count--; 1101 } 1102 1103 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1104 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1105 sess->deleted = QLA_SESS_DELETED; 1106 1107 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1108 vha->fcport_count--; 1109 sess->login_succ = 0; 1110 } 1111 1112 qla2x00_clear_loop_id(sess); 1113 1114 if (sess->conflict) { 1115 sess->conflict->login_pause = 0; 1116 sess->conflict = NULL; 1117 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1118 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1119 } 1120 1121 { 1122 struct qlt_plogi_ack_t *con = 1123 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1124 struct imm_ntfy_from_isp *iocb; 1125 1126 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1127 1128 if (con) { 1129 iocb = &con->iocb; 1130 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1131 "se_sess %p / sess %p port %8phC is gone," 1132 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1133 sess->se_sess, sess, sess->port_name, 1134 own ? "releasing own PLOGI" : "no own PLOGI pending", 1135 own ? own->ref_count : -1, 1136 iocb->u.isp24.port_name, con->ref_count); 1137 qlt_plogi_ack_unref(vha, con); 1138 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1139 } else { 1140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1141 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1142 sess->se_sess, sess, sess->port_name, 1143 own ? "releasing own PLOGI" : 1144 "no own PLOGI pending", 1145 own ? own->ref_count : -1); 1146 } 1147 1148 if (own) { 1149 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1150 qlt_plogi_ack_unref(vha, own); 1151 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1152 } 1153 } 1154 1155 sess->explicit_logout = 0; 1156 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1157 sess->free_pending = 0; 1158 1159 qla2x00_dfs_remove_rport(vha, sess); 1160 1161 ql_dbg(ql_dbg_disc, vha, 0xf001, 1162 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1163 sess, sess->port_name, vha->fcport_count); 1164 1165 if (tgt && (tgt->sess_count == 0)) 1166 wake_up_all(&tgt->waitQ); 1167 1168 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1169 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1170 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1171 switch (vha->host->active_mode) { 1172 case MODE_INITIATOR: 1173 case MODE_DUAL: 1174 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1175 qla2xxx_wake_dpc(vha); 1176 break; 1177 case MODE_TARGET: 1178 default: 1179 /* no-op */ 1180 break; 1181 } 1182 } 1183 1184 if (vha->fcport_count == 0) 1185 wake_up_all(&vha->fcport_waitQ); 1186 } 1187 1188 /* ha->tgt.sess_lock supposed to be held on entry */ 1189 void qlt_unreg_sess(struct fc_port *sess) 1190 { 1191 struct scsi_qla_host *vha = sess->vha; 1192 unsigned long flags; 1193 1194 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1195 "%s sess %p for deletion %8phC\n", 1196 __func__, sess, sess->port_name); 1197 1198 spin_lock_irqsave(&sess->vha->work_lock, flags); 1199 if (sess->free_pending) { 1200 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1201 return; 1202 } 1203 sess->free_pending = 1; 1204 /* 1205 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1206 * management from being sent. 1207 */ 1208 sess->flags |= FCF_ASYNC_SENT; 1209 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1210 1211 if (sess->se_sess) 1212 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1213 1214 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1215 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1216 sess->last_rscn_gen = sess->rscn_gen; 1217 sess->last_login_gen = sess->login_gen; 1218 1219 queue_work(sess->vha->hw->wq, &sess->free_work); 1220 } 1221 EXPORT_SYMBOL(qlt_unreg_sess); 1222 1223 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1224 { 1225 struct qla_hw_data *ha = vha->hw; 1226 struct fc_port *sess = NULL; 1227 uint16_t loop_id; 1228 int res = 0; 1229 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1230 unsigned long flags; 1231 1232 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1233 if (loop_id == 0xFFFF) { 1234 /* Global event */ 1235 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1236 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1237 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1238 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1239 } else { 1240 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1241 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1242 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1243 } 1244 1245 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1246 "Using sess for qla_tgt_reset: %p\n", sess); 1247 if (!sess) { 1248 res = -ESRCH; 1249 return res; 1250 } 1251 1252 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1253 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1254 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1255 mcmd, loop_id); 1256 1257 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1258 } 1259 1260 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1261 { 1262 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1263 sess->logout_on_delete = 0; 1264 sess->logo_ack_needed = 0; 1265 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1266 } 1267 } 1268 1269 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1270 { 1271 struct qla_tgt *tgt = sess->tgt; 1272 unsigned long flags; 1273 u16 sec; 1274 1275 switch (sess->disc_state) { 1276 case DSC_DELETE_PEND: 1277 return; 1278 case DSC_DELETED: 1279 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1280 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1281 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1282 wake_up_all(&tgt->waitQ); 1283 1284 if (sess->vha->fcport_count == 0) 1285 wake_up_all(&sess->vha->fcport_waitQ); 1286 return; 1287 } 1288 break; 1289 case DSC_UPD_FCPORT: 1290 /* 1291 * This port is not done reporting to upper layer. 1292 * let it finish 1293 */ 1294 sess->next_disc_state = DSC_DELETE_PEND; 1295 sec = jiffies_to_msecs(jiffies - 1296 sess->jiffies_at_registration)/1000; 1297 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1298 sess->sec_since_registration = sec; 1299 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1300 "%s %8phC : Slow Rport registration(%d Sec)\n", 1301 __func__, sess->port_name, sec); 1302 } 1303 return; 1304 default: 1305 break; 1306 } 1307 1308 spin_lock_irqsave(&sess->vha->work_lock, flags); 1309 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1310 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1311 return; 1312 } 1313 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1314 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1315 1316 sess->prli_pend_timer = 0; 1317 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1318 1319 qla24xx_chk_fcp_state(sess); 1320 1321 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1322 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1323 sess, sess->port_name, sess->fc4_type); 1324 1325 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1326 } 1327 1328 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1329 { 1330 struct fc_port *sess; 1331 scsi_qla_host_t *vha = tgt->vha; 1332 1333 list_for_each_entry(sess, &vha->vp_fcports, list) { 1334 if (sess->se_sess) 1335 qlt_schedule_sess_for_deletion(sess); 1336 } 1337 1338 /* At this point tgt could be already dead */ 1339 } 1340 1341 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1342 uint16_t *loop_id) 1343 { 1344 struct qla_hw_data *ha = vha->hw; 1345 dma_addr_t gid_list_dma; 1346 struct gid_list_info *gid_list, *gid; 1347 int res, rc, i; 1348 uint16_t entries; 1349 1350 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1351 &gid_list_dma, GFP_KERNEL); 1352 if (!gid_list) { 1353 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1354 "qla_target(%d): DMA Alloc failed of %u\n", 1355 vha->vp_idx, qla2x00_gid_list_size(ha)); 1356 return -ENOMEM; 1357 } 1358 1359 /* Get list of logged in devices */ 1360 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1361 if (rc != QLA_SUCCESS) { 1362 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1363 "qla_target(%d): get_id_list() failed: %x\n", 1364 vha->vp_idx, rc); 1365 res = -EBUSY; 1366 goto out_free_id_list; 1367 } 1368 1369 gid = gid_list; 1370 res = -ENOENT; 1371 for (i = 0; i < entries; i++) { 1372 if (gid->al_pa == s_id.al_pa && 1373 gid->area == s_id.area && 1374 gid->domain == s_id.domain) { 1375 *loop_id = le16_to_cpu(gid->loop_id); 1376 res = 0; 1377 break; 1378 } 1379 gid = (void *)gid + ha->gid_list_info_size; 1380 } 1381 1382 out_free_id_list: 1383 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1384 gid_list, gid_list_dma); 1385 return res; 1386 } 1387 1388 /* 1389 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1390 * Caller must put it. 1391 */ 1392 static struct fc_port *qlt_create_sess( 1393 struct scsi_qla_host *vha, 1394 fc_port_t *fcport, 1395 bool local) 1396 { 1397 struct qla_hw_data *ha = vha->hw; 1398 struct fc_port *sess = fcport; 1399 unsigned long flags; 1400 1401 if (vha->vha_tgt.qla_tgt->tgt_stop) 1402 return NULL; 1403 1404 if (fcport->se_sess) { 1405 if (!kref_get_unless_zero(&sess->sess_kref)) { 1406 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1407 "%s: kref_get_unless_zero failed for %8phC\n", 1408 __func__, sess->port_name); 1409 return NULL; 1410 } 1411 return fcport; 1412 } 1413 sess->tgt = vha->vha_tgt.qla_tgt; 1414 sess->local = local; 1415 1416 /* 1417 * Under normal circumstances we want to logout from firmware when 1418 * session eventually ends and release corresponding nport handle. 1419 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1420 * code will adjust these flags as necessary. 1421 */ 1422 sess->logout_on_delete = 1; 1423 sess->keep_nport_handle = 0; 1424 sess->logout_completed = 0; 1425 1426 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1427 &fcport->port_name[0], sess) < 0) { 1428 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1429 "(%d) %8phC check_initiator_node_acl failed\n", 1430 vha->vp_idx, fcport->port_name); 1431 return NULL; 1432 } else { 1433 kref_init(&fcport->sess_kref); 1434 /* 1435 * Take an extra reference to ->sess_kref here to handle 1436 * fc_port access across ->tgt.sess_lock reaquire. 1437 */ 1438 if (!kref_get_unless_zero(&sess->sess_kref)) { 1439 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1440 "%s: kref_get_unless_zero failed for %8phC\n", 1441 __func__, sess->port_name); 1442 return NULL; 1443 } 1444 1445 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1446 if (!IS_SW_RESV_ADDR(sess->d_id)) 1447 vha->vha_tgt.qla_tgt->sess_count++; 1448 1449 qlt_do_generation_tick(vha, &sess->generation); 1450 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1451 } 1452 1453 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1454 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1455 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1456 vha->vha_tgt.qla_tgt->sess_count); 1457 1458 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1459 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1460 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1461 vha->vp_idx, local ? "local " : "", fcport->port_name, 1462 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1463 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1464 1465 return sess; 1466 } 1467 1468 /* 1469 * max_gen - specifies maximum session generation 1470 * at which this deletion requestion is still valid 1471 */ 1472 void 1473 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1474 { 1475 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1476 struct fc_port *sess = fcport; 1477 unsigned long flags; 1478 1479 if (!vha->hw->tgt.tgt_ops) 1480 return; 1481 1482 if (!tgt) 1483 return; 1484 1485 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1486 if (tgt->tgt_stop) { 1487 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1488 return; 1489 } 1490 if (!sess->se_sess) { 1491 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1492 return; 1493 } 1494 1495 if (max_gen - sess->generation < 0) { 1496 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1498 "Ignoring stale deletion request for se_sess %p / sess %p" 1499 " for port %8phC, req_gen %d, sess_gen %d\n", 1500 sess->se_sess, sess, sess->port_name, max_gen, 1501 sess->generation); 1502 return; 1503 } 1504 1505 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1506 1507 sess->local = 1; 1508 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1509 qlt_schedule_sess_for_deletion(sess); 1510 } 1511 1512 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1513 { 1514 struct qla_hw_data *ha = tgt->ha; 1515 unsigned long flags; 1516 int res; 1517 /* 1518 * We need to protect against race, when tgt is freed before or 1519 * inside wake_up() 1520 */ 1521 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1522 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1523 "tgt %p, sess_count=%d\n", 1524 tgt, tgt->sess_count); 1525 res = (tgt->sess_count == 0); 1526 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1527 1528 return res; 1529 } 1530 1531 /* Called by tcm_qla2xxx configfs code */ 1532 int qlt_stop_phase1(struct qla_tgt *tgt) 1533 { 1534 struct scsi_qla_host *vha = tgt->vha; 1535 struct qla_hw_data *ha = tgt->ha; 1536 unsigned long flags; 1537 1538 mutex_lock(&ha->optrom_mutex); 1539 mutex_lock(&qla_tgt_mutex); 1540 1541 if (tgt->tgt_stop || tgt->tgt_stopped) { 1542 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1543 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1544 mutex_unlock(&qla_tgt_mutex); 1545 mutex_unlock(&ha->optrom_mutex); 1546 return -EPERM; 1547 } 1548 1549 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1550 vha->host_no, vha); 1551 /* 1552 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1553 * Lock is needed, because we still can get an incoming packet. 1554 */ 1555 mutex_lock(&vha->vha_tgt.tgt_mutex); 1556 tgt->tgt_stop = 1; 1557 qlt_clear_tgt_db(tgt); 1558 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1559 mutex_unlock(&qla_tgt_mutex); 1560 1561 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1562 "Waiting for sess works (tgt %p)", tgt); 1563 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1564 while (!list_empty(&tgt->sess_works_list)) { 1565 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1566 flush_scheduled_work(); 1567 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1568 } 1569 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1570 1571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1572 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1573 1574 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1575 1576 /* Big hammer */ 1577 if (!ha->flags.host_shutting_down && 1578 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1579 qlt_disable_vha(vha); 1580 1581 /* Wait for sessions to clear out (just in case) */ 1582 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1583 mutex_unlock(&ha->optrom_mutex); 1584 1585 return 0; 1586 } 1587 EXPORT_SYMBOL(qlt_stop_phase1); 1588 1589 /* Called by tcm_qla2xxx configfs code */ 1590 void qlt_stop_phase2(struct qla_tgt *tgt) 1591 { 1592 scsi_qla_host_t *vha = tgt->vha; 1593 1594 if (tgt->tgt_stopped) { 1595 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1596 "Already in tgt->tgt_stopped state\n"); 1597 dump_stack(); 1598 return; 1599 } 1600 if (!tgt->tgt_stop) { 1601 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1602 "%s: phase1 stop is not completed\n", __func__); 1603 dump_stack(); 1604 return; 1605 } 1606 1607 mutex_lock(&tgt->ha->optrom_mutex); 1608 mutex_lock(&vha->vha_tgt.tgt_mutex); 1609 tgt->tgt_stop = 0; 1610 tgt->tgt_stopped = 1; 1611 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1612 mutex_unlock(&tgt->ha->optrom_mutex); 1613 1614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1615 tgt); 1616 1617 switch (vha->qlini_mode) { 1618 case QLA2XXX_INI_MODE_EXCLUSIVE: 1619 vha->flags.online = 1; 1620 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1621 break; 1622 default: 1623 break; 1624 } 1625 } 1626 EXPORT_SYMBOL(qlt_stop_phase2); 1627 1628 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1629 static void qlt_release(struct qla_tgt *tgt) 1630 { 1631 scsi_qla_host_t *vha = tgt->vha; 1632 void *node; 1633 u64 key = 0; 1634 u16 i; 1635 struct qla_qpair_hint *h; 1636 struct qla_hw_data *ha = vha->hw; 1637 1638 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1639 qlt_stop_phase1(tgt); 1640 1641 if (!tgt->tgt_stopped) 1642 qlt_stop_phase2(tgt); 1643 1644 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1645 unsigned long flags; 1646 1647 h = &tgt->qphints[i]; 1648 if (h->qpair) { 1649 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1650 list_del(&h->hint_elem); 1651 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1652 h->qpair = NULL; 1653 } 1654 } 1655 kfree(tgt->qphints); 1656 mutex_lock(&qla_tgt_mutex); 1657 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1658 mutex_unlock(&qla_tgt_mutex); 1659 1660 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1661 btree_remove64(&tgt->lun_qpair_map, key); 1662 1663 btree_destroy64(&tgt->lun_qpair_map); 1664 1665 if (vha->vp_idx) 1666 if (ha->tgt.tgt_ops && 1667 ha->tgt.tgt_ops->remove_target && 1668 vha->vha_tgt.target_lport_ptr) 1669 ha->tgt.tgt_ops->remove_target(vha); 1670 1671 vha->vha_tgt.qla_tgt = NULL; 1672 1673 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1674 "Release of tgt %p finished\n", tgt); 1675 1676 kfree(tgt); 1677 } 1678 1679 /* ha->hardware_lock supposed to be held on entry */ 1680 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1681 const void *param, unsigned int param_size) 1682 { 1683 struct qla_tgt_sess_work_param *prm; 1684 unsigned long flags; 1685 1686 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1687 if (!prm) { 1688 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1689 "qla_target(%d): Unable to create session " 1690 "work, command will be refused", 0); 1691 return -ENOMEM; 1692 } 1693 1694 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1695 "Scheduling work (type %d, prm %p)" 1696 " to find session for param %p (size %d, tgt %p)\n", 1697 type, prm, param, param_size, tgt); 1698 1699 prm->type = type; 1700 memcpy(&prm->tm_iocb, param, param_size); 1701 1702 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1703 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1704 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1705 1706 schedule_work(&tgt->sess_work); 1707 1708 return 0; 1709 } 1710 1711 /* 1712 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1713 */ 1714 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1715 struct imm_ntfy_from_isp *ntfy, 1716 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1717 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1718 { 1719 struct scsi_qla_host *vha = qpair->vha; 1720 struct qla_hw_data *ha = vha->hw; 1721 request_t *pkt; 1722 struct nack_to_isp *nack; 1723 1724 if (!ha->flags.fw_started) 1725 return; 1726 1727 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1728 1729 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1730 if (!pkt) { 1731 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1732 "qla_target(%d): %s failed: unable to allocate " 1733 "request packet\n", vha->vp_idx, __func__); 1734 return; 1735 } 1736 1737 if (vha->vha_tgt.qla_tgt != NULL) 1738 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1739 1740 pkt->entry_type = NOTIFY_ACK_TYPE; 1741 pkt->entry_count = 1; 1742 1743 nack = (struct nack_to_isp *)pkt; 1744 nack->ox_id = ntfy->ox_id; 1745 1746 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1747 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1748 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1749 nack->u.isp24.flags = ntfy->u.isp24.flags & 1750 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1751 } 1752 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1753 nack->u.isp24.status = ntfy->u.isp24.status; 1754 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1755 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1756 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1757 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1758 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1759 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1760 nack->u.isp24.srr_reject_code = srr_reject_code; 1761 nack->u.isp24.srr_reject_code_expl = srr_explan; 1762 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1763 1764 /* TODO qualify this with EDIF enable */ 1765 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1766 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1767 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1768 } 1769 1770 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1771 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1772 vha->vp_idx, nack->u.isp24.status); 1773 1774 /* Memory Barrier */ 1775 wmb(); 1776 qla2x00_start_iocbs(vha, qpair->req); 1777 } 1778 1779 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1780 { 1781 struct scsi_qla_host *vha = mcmd->vha; 1782 struct qla_hw_data *ha = vha->hw; 1783 struct abts_resp_to_24xx *resp; 1784 __le32 f_ctl; 1785 uint32_t h; 1786 uint8_t *p; 1787 int rc; 1788 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1789 struct qla_qpair *qpair = mcmd->qpair; 1790 1791 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1792 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1793 ha, mcmd->fc_tm_rsp); 1794 1795 rc = qlt_check_reserve_free_req(qpair, 1); 1796 if (rc) { 1797 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1798 "qla_target(%d): %s failed: unable to allocate request packet\n", 1799 vha->vp_idx, __func__); 1800 return -EAGAIN; 1801 } 1802 1803 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1804 memset(resp, 0, sizeof(*resp)); 1805 1806 h = qlt_make_handle(qpair); 1807 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1808 /* 1809 * CTIO type 7 from the firmware doesn't provide a way to 1810 * know the initiator's LOOP ID, hence we can't find 1811 * the session and, so, the command. 1812 */ 1813 return -EAGAIN; 1814 } else { 1815 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1816 } 1817 1818 resp->handle = make_handle(qpair->req->id, h); 1819 resp->entry_type = ABTS_RESP_24XX; 1820 resp->entry_count = 1; 1821 resp->nport_handle = abts->nport_handle; 1822 resp->vp_index = vha->vp_idx; 1823 resp->sof_type = abts->sof_type; 1824 resp->exchange_address = abts->exchange_address; 1825 resp->fcp_hdr_le = abts->fcp_hdr_le; 1826 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1827 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1828 F_CTL_SEQ_INITIATIVE); 1829 p = (uint8_t *)&f_ctl; 1830 resp->fcp_hdr_le.f_ctl[0] = *p++; 1831 resp->fcp_hdr_le.f_ctl[1] = *p++; 1832 resp->fcp_hdr_le.f_ctl[2] = *p; 1833 1834 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1835 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1836 1837 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1838 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1839 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1840 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1841 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1842 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1843 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1844 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1845 } else { 1846 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1847 resp->payload.ba_rjt.reason_code = 1848 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1849 /* Other bytes are zero */ 1850 } 1851 1852 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1853 1854 /* Memory Barrier */ 1855 wmb(); 1856 if (qpair->reqq_start_iocbs) 1857 qpair->reqq_start_iocbs(qpair); 1858 else 1859 qla2x00_start_iocbs(vha, qpair->req); 1860 1861 return rc; 1862 } 1863 1864 /* 1865 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1866 */ 1867 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1868 struct abts_recv_from_24xx *abts, uint32_t status, 1869 bool ids_reversed) 1870 { 1871 struct scsi_qla_host *vha = qpair->vha; 1872 struct qla_hw_data *ha = vha->hw; 1873 struct abts_resp_to_24xx *resp; 1874 __le32 f_ctl; 1875 uint8_t *p; 1876 1877 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1878 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1879 ha, abts, status); 1880 1881 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1882 NULL); 1883 if (!resp) { 1884 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1885 "qla_target(%d): %s failed: unable to allocate " 1886 "request packet", vha->vp_idx, __func__); 1887 return; 1888 } 1889 1890 resp->entry_type = ABTS_RESP_24XX; 1891 resp->handle = QLA_TGT_SKIP_HANDLE; 1892 resp->entry_count = 1; 1893 resp->nport_handle = abts->nport_handle; 1894 resp->vp_index = vha->vp_idx; 1895 resp->sof_type = abts->sof_type; 1896 resp->exchange_address = abts->exchange_address; 1897 resp->fcp_hdr_le = abts->fcp_hdr_le; 1898 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1899 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1900 F_CTL_SEQ_INITIATIVE); 1901 p = (uint8_t *)&f_ctl; 1902 resp->fcp_hdr_le.f_ctl[0] = *p++; 1903 resp->fcp_hdr_le.f_ctl[1] = *p++; 1904 resp->fcp_hdr_le.f_ctl[2] = *p; 1905 if (ids_reversed) { 1906 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1907 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1908 } else { 1909 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1910 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1911 } 1912 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1913 if (status == FCP_TMF_CMPL) { 1914 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1915 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1916 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1917 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1918 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1919 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1920 } else { 1921 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1922 resp->payload.ba_rjt.reason_code = 1923 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1924 /* Other bytes are zero */ 1925 } 1926 1927 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1928 1929 /* Memory Barrier */ 1930 wmb(); 1931 if (qpair->reqq_start_iocbs) 1932 qpair->reqq_start_iocbs(qpair); 1933 else 1934 qla2x00_start_iocbs(vha, qpair->req); 1935 } 1936 1937 /* 1938 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1939 */ 1940 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1941 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1942 { 1943 struct ctio7_to_24xx *ctio; 1944 u16 tmp; 1945 struct abts_recv_from_24xx *entry; 1946 1947 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1948 if (ctio == NULL) { 1949 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1950 "qla_target(%d): %s failed: unable to allocate " 1951 "request packet\n", vha->vp_idx, __func__); 1952 return; 1953 } 1954 1955 if (mcmd) 1956 /* abts from remote port */ 1957 entry = &mcmd->orig_iocb.abts; 1958 else 1959 /* abts from this driver. */ 1960 entry = (struct abts_recv_from_24xx *)pkt; 1961 1962 /* 1963 * We've got on entrance firmware's response on by us generated 1964 * ABTS response. So, in it ID fields are reversed. 1965 */ 1966 1967 ctio->entry_type = CTIO_TYPE7; 1968 ctio->entry_count = 1; 1969 ctio->nport_handle = entry->nport_handle; 1970 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1971 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1972 ctio->vp_index = vha->vp_idx; 1973 ctio->exchange_addr = entry->exchange_addr_to_abort; 1974 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1975 1976 if (mcmd) { 1977 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1978 1979 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1980 tmp |= (mcmd->abort_io_attr << 9); 1981 else if (qpair->retry_term_cnt & 1) 1982 tmp |= (0x4 << 9); 1983 } else { 1984 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1985 1986 if (qpair->retry_term_cnt & 1) 1987 tmp |= (0x4 << 9); 1988 } 1989 ctio->u.status1.flags = cpu_to_le16(tmp); 1990 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1991 1992 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1993 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1994 le16_to_cpu(ctio->u.status1.flags), 1995 le16_to_cpu(ctio->u.status1.ox_id), 1996 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1997 1998 /* Memory Barrier */ 1999 wmb(); 2000 if (qpair->reqq_start_iocbs) 2001 qpair->reqq_start_iocbs(qpair); 2002 else 2003 qla2x00_start_iocbs(vha, qpair->req); 2004 2005 if (mcmd) 2006 qlt_build_abts_resp_iocb(mcmd); 2007 else 2008 qlt_24xx_send_abts_resp(qpair, 2009 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 2010 2011 } 2012 2013 /* drop cmds for the given lun 2014 * XXX only looks for cmds on the port through which lun reset was recieved 2015 * XXX does not go through the list of other port (which may have cmds 2016 * for the same lun) 2017 */ 2018 static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 2019 { 2020 struct qla_tgt_sess_op *op; 2021 struct qla_tgt_cmd *cmd; 2022 uint32_t key; 2023 unsigned long flags; 2024 2025 key = sid_to_key(s_id); 2026 spin_lock_irqsave(&vha->cmd_list_lock, flags); 2027 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 2028 uint32_t op_key; 2029 u64 op_lun; 2030 2031 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2032 op_lun = scsilun_to_int( 2033 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2034 if (op_key == key && op_lun == lun) 2035 op->aborted = true; 2036 } 2037 2038 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2039 uint32_t op_key; 2040 u64 op_lun; 2041 2042 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2043 op_lun = scsilun_to_int( 2044 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2045 if (op_key == key && op_lun == lun) 2046 op->aborted = true; 2047 } 2048 2049 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2050 uint32_t cmd_key; 2051 u64 cmd_lun; 2052 2053 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2054 cmd_lun = scsilun_to_int( 2055 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2056 if (cmd_key == key && cmd_lun == lun) 2057 cmd->aborted = 1; 2058 } 2059 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2060 } 2061 2062 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2063 uint64_t unpacked_lun) 2064 { 2065 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2066 struct qla_qpair_hint *h = NULL; 2067 2068 if (vha->flags.qpairs_available) { 2069 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2070 if (!h) 2071 h = &tgt->qphints[0]; 2072 } else { 2073 h = &tgt->qphints[0]; 2074 } 2075 2076 return h; 2077 } 2078 2079 static void qlt_do_tmr_work(struct work_struct *work) 2080 { 2081 struct qla_tgt_mgmt_cmd *mcmd = 2082 container_of(work, struct qla_tgt_mgmt_cmd, work); 2083 struct qla_hw_data *ha = mcmd->vha->hw; 2084 int rc; 2085 uint32_t tag; 2086 unsigned long flags; 2087 2088 switch (mcmd->tmr_func) { 2089 case QLA_TGT_ABTS: 2090 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2091 break; 2092 default: 2093 tag = 0; 2094 break; 2095 } 2096 2097 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2098 mcmd->tmr_func, tag); 2099 2100 if (rc != 0) { 2101 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2102 switch (mcmd->tmr_func) { 2103 case QLA_TGT_ABTS: 2104 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2105 qlt_build_abts_resp_iocb(mcmd); 2106 break; 2107 case QLA_TGT_LUN_RESET: 2108 case QLA_TGT_CLEAR_TS: 2109 case QLA_TGT_ABORT_TS: 2110 case QLA_TGT_CLEAR_ACA: 2111 case QLA_TGT_TARGET_RESET: 2112 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2113 qla_sam_status); 2114 break; 2115 2116 case QLA_TGT_ABORT_ALL: 2117 case QLA_TGT_NEXUS_LOSS_SESS: 2118 case QLA_TGT_NEXUS_LOSS: 2119 qlt_send_notify_ack(mcmd->qpair, 2120 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2121 break; 2122 } 2123 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2124 2125 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2126 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2127 mcmd->vha->vp_idx, rc); 2128 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2129 } 2130 } 2131 2132 /* ha->hardware_lock supposed to be held on entry */ 2133 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2134 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2135 { 2136 struct qla_hw_data *ha = vha->hw; 2137 struct qla_tgt_mgmt_cmd *mcmd; 2138 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2139 struct qla_tgt_cmd *abort_cmd; 2140 2141 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2142 "qla_target(%d): task abort (tag=%d)\n", 2143 vha->vp_idx, abts->exchange_addr_to_abort); 2144 2145 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2146 if (mcmd == NULL) { 2147 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2148 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2149 vha->vp_idx, __func__); 2150 return -ENOMEM; 2151 } 2152 memset(mcmd, 0, sizeof(*mcmd)); 2153 mcmd->cmd_type = TYPE_TGT_TMCMD; 2154 mcmd->sess = sess; 2155 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2156 mcmd->reset_count = ha->base_qpair->chip_reset; 2157 mcmd->tmr_func = QLA_TGT_ABTS; 2158 mcmd->qpair = h->qpair; 2159 mcmd->vha = vha; 2160 2161 /* 2162 * LUN is looked up by target-core internally based on the passed 2163 * abts->exchange_addr_to_abort tag. 2164 */ 2165 mcmd->se_cmd.cpuid = h->cpuid; 2166 2167 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2168 le32_to_cpu(abts->exchange_addr_to_abort)); 2169 if (!abort_cmd) 2170 return -EIO; 2171 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2172 2173 if (abort_cmd->qpair) { 2174 mcmd->qpair = abort_cmd->qpair; 2175 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2176 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2177 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2178 } 2179 2180 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2181 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2182 2183 return 0; 2184 } 2185 2186 /* 2187 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2188 */ 2189 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2190 struct abts_recv_from_24xx *abts) 2191 { 2192 struct qla_hw_data *ha = vha->hw; 2193 struct fc_port *sess; 2194 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2195 be_id_t s_id; 2196 int rc; 2197 unsigned long flags; 2198 2199 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2200 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2201 "qla_target(%d): ABTS: Abort Sequence not " 2202 "supported\n", vha->vp_idx); 2203 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2204 false); 2205 return; 2206 } 2207 2208 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2210 "qla_target(%d): ABTS: Unknown Exchange " 2211 "Address received\n", vha->vp_idx); 2212 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2213 false); 2214 return; 2215 } 2216 2217 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2218 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2219 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2220 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2221 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2222 2223 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2224 2225 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2226 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2227 if (!sess) { 2228 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2229 "qla_target(%d): task abort for non-existent session\n", 2230 vha->vp_idx); 2231 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2232 2233 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2234 false); 2235 return; 2236 } 2237 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2238 2239 2240 if (sess->deleted) { 2241 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2242 false); 2243 return; 2244 } 2245 2246 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2247 if (rc != 0) { 2248 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2249 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2250 vha->vp_idx, rc); 2251 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2252 false); 2253 return; 2254 } 2255 } 2256 2257 /* 2258 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2259 */ 2260 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2261 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2262 { 2263 struct scsi_qla_host *ha = mcmd->vha; 2264 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2265 struct ctio7_to_24xx *ctio; 2266 uint16_t temp; 2267 2268 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2269 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2270 ha, atio, resp_code); 2271 2272 2273 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2274 if (ctio == NULL) { 2275 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2276 "qla_target(%d): %s failed: unable to allocate " 2277 "request packet\n", ha->vp_idx, __func__); 2278 return; 2279 } 2280 2281 ctio->entry_type = CTIO_TYPE7; 2282 ctio->entry_count = 1; 2283 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2284 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2285 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2286 ctio->vp_index = ha->vp_idx; 2287 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2288 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2289 temp = (atio->u.isp24.attr << 9)| 2290 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2291 ctio->u.status1.flags = cpu_to_le16(temp); 2292 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2293 ctio->u.status1.ox_id = cpu_to_le16(temp); 2294 ctio->u.status1.scsi_status = 2295 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2296 ctio->u.status1.response_len = cpu_to_le16(8); 2297 ctio->u.status1.sense_data[0] = resp_code; 2298 2299 /* Memory Barrier */ 2300 wmb(); 2301 if (qpair->reqq_start_iocbs) 2302 qpair->reqq_start_iocbs(qpair); 2303 else 2304 qla2x00_start_iocbs(ha, qpair->req); 2305 } 2306 2307 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2308 { 2309 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2310 } 2311 EXPORT_SYMBOL(qlt_free_mcmd); 2312 2313 /* 2314 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2315 * reacquire 2316 */ 2317 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2318 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2319 { 2320 struct atio_from_isp *atio = &cmd->atio; 2321 struct ctio7_to_24xx *ctio; 2322 uint16_t temp; 2323 struct scsi_qla_host *vha = cmd->vha; 2324 2325 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2326 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2327 "sense_key=%02x, asc=%02x, ascq=%02x", 2328 vha, atio, scsi_status, sense_key, asc, ascq); 2329 2330 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2331 if (!ctio) { 2332 ql_dbg(ql_dbg_async, vha, 0x3067, 2333 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2334 vha->host_no, __func__); 2335 goto out; 2336 } 2337 2338 ctio->entry_type = CTIO_TYPE7; 2339 ctio->entry_count = 1; 2340 ctio->handle = QLA_TGT_SKIP_HANDLE; 2341 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2342 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2343 ctio->vp_index = vha->vp_idx; 2344 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2345 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2346 temp = (atio->u.isp24.attr << 9) | 2347 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2348 ctio->u.status1.flags = cpu_to_le16(temp); 2349 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2350 ctio->u.status1.ox_id = cpu_to_le16(temp); 2351 ctio->u.status1.scsi_status = 2352 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2353 ctio->u.status1.response_len = cpu_to_le16(18); 2354 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2355 2356 if (ctio->u.status1.residual != 0) 2357 ctio->u.status1.scsi_status |= 2358 cpu_to_le16(SS_RESIDUAL_UNDER); 2359 2360 /* Fixed format sense data. */ 2361 ctio->u.status1.sense_data[0] = 0x70; 2362 ctio->u.status1.sense_data[2] = sense_key; 2363 /* Additional sense length */ 2364 ctio->u.status1.sense_data[7] = 0xa; 2365 /* ASC and ASCQ */ 2366 ctio->u.status1.sense_data[12] = asc; 2367 ctio->u.status1.sense_data[13] = ascq; 2368 2369 /* Memory Barrier */ 2370 wmb(); 2371 2372 if (qpair->reqq_start_iocbs) 2373 qpair->reqq_start_iocbs(qpair); 2374 else 2375 qla2x00_start_iocbs(vha, qpair->req); 2376 2377 out: 2378 return; 2379 } 2380 2381 /* callback from target fabric module code */ 2382 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2383 { 2384 struct scsi_qla_host *vha = mcmd->sess->vha; 2385 struct qla_hw_data *ha = vha->hw; 2386 unsigned long flags; 2387 struct qla_qpair *qpair = mcmd->qpair; 2388 bool free_mcmd = true; 2389 2390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2391 "TM response mcmd (%p) status %#x state %#x", 2392 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2393 2394 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2395 2396 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2397 /* 2398 * Either the port is not online or this request was from 2399 * previous life, just abort the processing. 2400 */ 2401 ql_dbg(ql_dbg_async, vha, 0xe100, 2402 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2403 vha->flags.online, qla2x00_reset_active(vha), 2404 mcmd->reset_count, qpair->chip_reset); 2405 ha->tgt.tgt_ops->free_mcmd(mcmd); 2406 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2407 return; 2408 } 2409 2410 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2411 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2412 case ELS_LOGO: 2413 case ELS_PRLO: 2414 case ELS_TPRLO: 2415 ql_dbg(ql_dbg_disc, vha, 0x2106, 2416 "TM response logo %8phC status %#x state %#x", 2417 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2418 mcmd->flags); 2419 qlt_schedule_sess_for_deletion(mcmd->sess); 2420 break; 2421 default: 2422 qlt_send_notify_ack(vha->hw->base_qpair, 2423 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2424 break; 2425 } 2426 } else { 2427 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2428 qlt_build_abts_resp_iocb(mcmd); 2429 free_mcmd = false; 2430 } else 2431 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2432 mcmd->fc_tm_rsp); 2433 } 2434 /* 2435 * Make the callback for ->free_mcmd() to queue_work() and invoke 2436 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2437 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2438 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2439 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2440 * qlt_xmit_tm_rsp() returns here.. 2441 */ 2442 if (free_mcmd) 2443 ha->tgt.tgt_ops->free_mcmd(mcmd); 2444 2445 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2446 } 2447 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2448 2449 /* No locks */ 2450 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2451 { 2452 struct qla_tgt_cmd *cmd = prm->cmd; 2453 2454 BUG_ON(cmd->sg_cnt == 0); 2455 2456 prm->sg = (struct scatterlist *)cmd->sg; 2457 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2458 cmd->sg_cnt, cmd->dma_data_direction); 2459 if (unlikely(prm->seg_cnt == 0)) 2460 goto out_err; 2461 2462 prm->cmd->sg_mapped = 1; 2463 2464 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2465 /* 2466 * If greater than four sg entries then we need to allocate 2467 * the continuation entries 2468 */ 2469 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2470 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2471 QLA_TGT_DATASEGS_PER_CMD_24XX, 2472 QLA_TGT_DATASEGS_PER_CONT_24XX); 2473 } else { 2474 /* DIF */ 2475 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2476 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2477 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2478 prm->tot_dsds = prm->seg_cnt; 2479 } else 2480 prm->tot_dsds = prm->seg_cnt; 2481 2482 if (cmd->prot_sg_cnt) { 2483 prm->prot_sg = cmd->prot_sg; 2484 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2485 cmd->prot_sg, cmd->prot_sg_cnt, 2486 cmd->dma_data_direction); 2487 if (unlikely(prm->prot_seg_cnt == 0)) 2488 goto out_err; 2489 2490 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2491 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2492 /* Dif Bundling not support here */ 2493 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2494 cmd->blk_sz); 2495 prm->tot_dsds += prm->prot_seg_cnt; 2496 } else 2497 prm->tot_dsds += prm->prot_seg_cnt; 2498 } 2499 } 2500 2501 return 0; 2502 2503 out_err: 2504 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2505 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2506 0, prm->cmd->sg_cnt); 2507 return -1; 2508 } 2509 2510 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2511 { 2512 struct qla_hw_data *ha; 2513 struct qla_qpair *qpair; 2514 2515 if (!cmd->sg_mapped) 2516 return; 2517 2518 qpair = cmd->qpair; 2519 2520 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2521 cmd->dma_data_direction); 2522 cmd->sg_mapped = 0; 2523 2524 if (cmd->prot_sg_cnt) 2525 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2526 cmd->dma_data_direction); 2527 2528 if (!cmd->ctx) 2529 return; 2530 ha = vha->hw; 2531 if (cmd->ctx_dsd_alloced) 2532 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2533 2534 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2535 } 2536 2537 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2538 uint32_t req_cnt) 2539 { 2540 uint32_t cnt; 2541 struct req_que *req = qpair->req; 2542 2543 if (req->cnt < (req_cnt + 2)) { 2544 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2545 rd_reg_dword_relaxed(req->req_q_out)); 2546 2547 if (req->ring_index < cnt) 2548 req->cnt = cnt - req->ring_index; 2549 else 2550 req->cnt = req->length - (req->ring_index - cnt); 2551 2552 if (unlikely(req->cnt < (req_cnt + 2))) 2553 return -EAGAIN; 2554 } 2555 2556 req->cnt -= req_cnt; 2557 2558 return 0; 2559 } 2560 2561 /* 2562 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2563 */ 2564 static inline void *qlt_get_req_pkt(struct req_que *req) 2565 { 2566 /* Adjust ring index. */ 2567 req->ring_index++; 2568 if (req->ring_index == req->length) { 2569 req->ring_index = 0; 2570 req->ring_ptr = req->ring; 2571 } else { 2572 req->ring_ptr++; 2573 } 2574 return (cont_entry_t *)req->ring_ptr; 2575 } 2576 2577 /* ha->hardware_lock supposed to be held on entry */ 2578 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2579 { 2580 uint32_t h; 2581 int index; 2582 uint8_t found = 0; 2583 struct req_que *req = qpair->req; 2584 2585 h = req->current_outstanding_cmd; 2586 2587 for (index = 1; index < req->num_outstanding_cmds; index++) { 2588 h++; 2589 if (h == req->num_outstanding_cmds) 2590 h = 1; 2591 2592 if (h == QLA_TGT_SKIP_HANDLE) 2593 continue; 2594 2595 if (!req->outstanding_cmds[h]) { 2596 found = 1; 2597 break; 2598 } 2599 } 2600 2601 if (found) { 2602 req->current_outstanding_cmd = h; 2603 } else { 2604 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2605 "qla_target(%d): Ran out of empty cmd slots\n", 2606 qpair->vha->vp_idx); 2607 h = QLA_TGT_NULL_HANDLE; 2608 } 2609 2610 return h; 2611 } 2612 2613 /* ha->hardware_lock supposed to be held on entry */ 2614 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2615 struct qla_tgt_prm *prm) 2616 { 2617 uint32_t h; 2618 struct ctio7_to_24xx *pkt; 2619 struct atio_from_isp *atio = &prm->cmd->atio; 2620 uint16_t temp; 2621 struct qla_tgt_cmd *cmd = prm->cmd; 2622 2623 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2624 prm->pkt = pkt; 2625 memset(pkt, 0, sizeof(*pkt)); 2626 2627 pkt->entry_type = CTIO_TYPE7; 2628 pkt->entry_count = (uint8_t)prm->req_cnt; 2629 pkt->vp_index = prm->cmd->vp_idx; 2630 2631 h = qlt_make_handle(qpair); 2632 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2633 /* 2634 * CTIO type 7 from the firmware doesn't provide a way to 2635 * know the initiator's LOOP ID, hence we can't find 2636 * the session and, so, the command. 2637 */ 2638 return -EAGAIN; 2639 } else 2640 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2641 2642 pkt->handle = make_handle(qpair->req->id, h); 2643 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2644 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2645 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2646 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2647 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2648 temp = atio->u.isp24.attr << 9; 2649 pkt->u.status0.flags |= cpu_to_le16(temp); 2650 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2651 pkt->u.status0.ox_id = cpu_to_le16(temp); 2652 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2653 2654 if (cmd->edif) { 2655 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2656 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2657 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2658 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2659 2660 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2661 } 2662 2663 return 0; 2664 } 2665 2666 /* 2667 * ha->hardware_lock supposed to be held on entry. We have already made sure 2668 * that there is sufficient amount of request entries to not drop it. 2669 */ 2670 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2671 { 2672 int cnt; 2673 struct dsd64 *cur_dsd; 2674 2675 /* Build continuation packets */ 2676 while (prm->seg_cnt > 0) { 2677 cont_a64_entry_t *cont_pkt64 = 2678 (cont_a64_entry_t *)qlt_get_req_pkt( 2679 prm->cmd->qpair->req); 2680 2681 /* 2682 * Make sure that from cont_pkt64 none of 2683 * 64-bit specific fields used for 32-bit 2684 * addressing. Cast to (cont_entry_t *) for 2685 * that. 2686 */ 2687 2688 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2689 2690 cont_pkt64->entry_count = 1; 2691 cont_pkt64->sys_define = 0; 2692 2693 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2694 cur_dsd = cont_pkt64->dsd; 2695 2696 /* Load continuation entry data segments */ 2697 for (cnt = 0; 2698 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2699 cnt++, prm->seg_cnt--) { 2700 append_dsd64(&cur_dsd, prm->sg); 2701 prm->sg = sg_next(prm->sg); 2702 } 2703 } 2704 } 2705 2706 /* 2707 * ha->hardware_lock supposed to be held on entry. We have already made sure 2708 * that there is sufficient amount of request entries to not drop it. 2709 */ 2710 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2711 { 2712 int cnt; 2713 struct dsd64 *cur_dsd; 2714 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2715 2716 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2717 2718 /* Setup packet address segment pointer */ 2719 cur_dsd = &pkt24->u.status0.dsd; 2720 2721 /* Set total data segment count */ 2722 if (prm->seg_cnt) 2723 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2724 2725 if (prm->seg_cnt == 0) { 2726 /* No data transfer */ 2727 cur_dsd->address = 0; 2728 cur_dsd->length = 0; 2729 return; 2730 } 2731 2732 /* If scatter gather */ 2733 2734 /* Load command entry data segments */ 2735 for (cnt = 0; 2736 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2737 cnt++, prm->seg_cnt--) { 2738 append_dsd64(&cur_dsd, prm->sg); 2739 prm->sg = sg_next(prm->sg); 2740 } 2741 2742 qlt_load_cont_data_segments(prm); 2743 } 2744 2745 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2746 { 2747 return cmd->bufflen > 0; 2748 } 2749 2750 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2751 { 2752 struct qla_tgt_cmd *cmd; 2753 struct scsi_qla_host *vha; 2754 2755 /* asc 0x10=dif error */ 2756 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2757 cmd = prm->cmd; 2758 vha = cmd->vha; 2759 /* ASCQ */ 2760 switch (prm->sense_buffer[13]) { 2761 case 1: 2762 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2763 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2764 "se_cmd=%p tag[%x]", 2765 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2766 cmd->atio.u.isp24.exchange_addr); 2767 break; 2768 case 2: 2769 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2770 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2771 "se_cmd=%p tag[%x]", 2772 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2773 cmd->atio.u.isp24.exchange_addr); 2774 break; 2775 case 3: 2776 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2777 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2778 "se_cmd=%p tag[%x]", 2779 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2780 cmd->atio.u.isp24.exchange_addr); 2781 break; 2782 default: 2783 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2784 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2785 "se_cmd=%p tag[%x]", 2786 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2787 cmd->atio.u.isp24.exchange_addr); 2788 break; 2789 } 2790 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2791 } 2792 } 2793 2794 /* 2795 * Called without ha->hardware_lock held 2796 */ 2797 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2798 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2799 uint32_t *full_req_cnt) 2800 { 2801 struct se_cmd *se_cmd = &cmd->se_cmd; 2802 struct qla_qpair *qpair = cmd->qpair; 2803 2804 prm->cmd = cmd; 2805 prm->tgt = cmd->tgt; 2806 prm->pkt = NULL; 2807 prm->rq_result = scsi_status; 2808 prm->sense_buffer = &cmd->sense_buffer[0]; 2809 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2810 prm->sg = NULL; 2811 prm->seg_cnt = -1; 2812 prm->req_cnt = 1; 2813 prm->residual = 0; 2814 prm->add_status_pkt = 0; 2815 prm->prot_sg = NULL; 2816 prm->prot_seg_cnt = 0; 2817 prm->tot_dsds = 0; 2818 2819 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2820 if (qlt_pci_map_calc_cnt(prm) != 0) 2821 return -EAGAIN; 2822 } 2823 2824 *full_req_cnt = prm->req_cnt; 2825 2826 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2827 prm->residual = se_cmd->residual_count; 2828 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2829 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2830 prm->residual, se_cmd->tag, 2831 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2832 cmd->bufflen, prm->rq_result); 2833 prm->rq_result |= SS_RESIDUAL_UNDER; 2834 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2835 prm->residual = se_cmd->residual_count; 2836 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2837 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2838 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2839 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2840 prm->rq_result |= SS_RESIDUAL_OVER; 2841 } 2842 2843 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2844 /* 2845 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2846 * ignored in *xmit_response() below 2847 */ 2848 if (qlt_has_data(cmd)) { 2849 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2850 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2851 (prm->rq_result != 0))) { 2852 prm->add_status_pkt = 1; 2853 (*full_req_cnt)++; 2854 } 2855 } 2856 } 2857 2858 return 0; 2859 } 2860 2861 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2862 int sending_sense) 2863 { 2864 if (cmd->qpair->enable_class_2) 2865 return 0; 2866 2867 if (sending_sense) 2868 return cmd->conf_compl_supported; 2869 else 2870 return cmd->qpair->enable_explicit_conf && 2871 cmd->conf_compl_supported; 2872 } 2873 2874 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2875 struct qla_tgt_prm *prm) 2876 { 2877 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2878 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2879 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2880 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2881 ctio->u.status0.flags |= cpu_to_le16( 2882 CTIO7_FLAGS_EXPLICIT_CONFORM | 2883 CTIO7_FLAGS_CONFORM_REQ); 2884 } 2885 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2886 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2887 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2888 int i; 2889 2890 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2891 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2892 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2893 "Skipping EXPLICIT_CONFORM and " 2894 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2895 "non GOOD status\n"); 2896 goto skip_explict_conf; 2897 } 2898 ctio->u.status1.flags |= cpu_to_le16( 2899 CTIO7_FLAGS_EXPLICIT_CONFORM | 2900 CTIO7_FLAGS_CONFORM_REQ); 2901 } 2902 skip_explict_conf: 2903 ctio->u.status1.flags &= 2904 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2905 ctio->u.status1.flags |= 2906 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2907 ctio->u.status1.scsi_status |= 2908 cpu_to_le16(SS_SENSE_LEN_VALID); 2909 ctio->u.status1.sense_length = 2910 cpu_to_le16(prm->sense_buffer_len); 2911 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2912 uint32_t v; 2913 2914 v = get_unaligned_be32( 2915 &((uint32_t *)prm->sense_buffer)[i]); 2916 put_unaligned_le32(v, 2917 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2918 } 2919 qlt_print_dif_err(prm); 2920 2921 } else { 2922 ctio->u.status1.flags &= 2923 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2924 ctio->u.status1.flags |= 2925 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2926 ctio->u.status1.sense_length = 0; 2927 memset(ctio->u.status1.sense_data, 0, 2928 sizeof(ctio->u.status1.sense_data)); 2929 } 2930 2931 /* Sense with len > 24, is it possible ??? */ 2932 } 2933 2934 static inline int 2935 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2936 { 2937 switch (se_cmd->prot_op) { 2938 case TARGET_PROT_DOUT_INSERT: 2939 case TARGET_PROT_DIN_STRIP: 2940 if (ql2xenablehba_err_chk >= 1) 2941 return 1; 2942 break; 2943 case TARGET_PROT_DOUT_PASS: 2944 case TARGET_PROT_DIN_PASS: 2945 if (ql2xenablehba_err_chk >= 2) 2946 return 1; 2947 break; 2948 case TARGET_PROT_DIN_INSERT: 2949 case TARGET_PROT_DOUT_STRIP: 2950 return 1; 2951 default: 2952 break; 2953 } 2954 return 0; 2955 } 2956 2957 static inline int 2958 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2959 { 2960 switch (se_cmd->prot_op) { 2961 case TARGET_PROT_DIN_INSERT: 2962 case TARGET_PROT_DOUT_INSERT: 2963 case TARGET_PROT_DIN_STRIP: 2964 case TARGET_PROT_DOUT_STRIP: 2965 case TARGET_PROT_DIN_PASS: 2966 case TARGET_PROT_DOUT_PASS: 2967 return 1; 2968 default: 2969 return 0; 2970 } 2971 return 0; 2972 } 2973 2974 /* 2975 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2976 */ 2977 static void 2978 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2979 uint16_t *pfw_prot_opts) 2980 { 2981 struct se_cmd *se_cmd = &cmd->se_cmd; 2982 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2983 scsi_qla_host_t *vha = cmd->tgt->vha; 2984 struct qla_hw_data *ha = vha->hw; 2985 uint32_t t32 = 0; 2986 2987 /* 2988 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2989 * have been immplemented by TCM, before AppTag is avail. 2990 * Look for modesense_handlers[] 2991 */ 2992 ctx->app_tag = 0; 2993 ctx->app_tag_mask[0] = 0x0; 2994 ctx->app_tag_mask[1] = 0x0; 2995 2996 if (IS_PI_UNINIT_CAPABLE(ha)) { 2997 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2998 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2999 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 3000 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3001 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3002 } 3003 3004 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 3005 3006 switch (se_cmd->prot_type) { 3007 case TARGET_DIF_TYPE0_PROT: 3008 /* 3009 * No check for ql2xenablehba_err_chk, as it 3010 * would be an I/O error if hba tag generation 3011 * is not done. 3012 */ 3013 ctx->ref_tag = cpu_to_le32(lba); 3014 /* enable ALL bytes of the ref tag */ 3015 ctx->ref_tag_mask[0] = 0xff; 3016 ctx->ref_tag_mask[1] = 0xff; 3017 ctx->ref_tag_mask[2] = 0xff; 3018 ctx->ref_tag_mask[3] = 0xff; 3019 break; 3020 case TARGET_DIF_TYPE1_PROT: 3021 /* 3022 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 3023 * REF tag, and 16 bit app tag. 3024 */ 3025 ctx->ref_tag = cpu_to_le32(lba); 3026 if (!qla_tgt_ref_mask_check(se_cmd) || 3027 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3028 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3029 break; 3030 } 3031 /* enable ALL bytes of the ref tag */ 3032 ctx->ref_tag_mask[0] = 0xff; 3033 ctx->ref_tag_mask[1] = 0xff; 3034 ctx->ref_tag_mask[2] = 0xff; 3035 ctx->ref_tag_mask[3] = 0xff; 3036 break; 3037 case TARGET_DIF_TYPE2_PROT: 3038 /* 3039 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3040 * tag has to match LBA in CDB + N 3041 */ 3042 ctx->ref_tag = cpu_to_le32(lba); 3043 if (!qla_tgt_ref_mask_check(se_cmd) || 3044 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3045 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3046 break; 3047 } 3048 /* enable ALL bytes of the ref tag */ 3049 ctx->ref_tag_mask[0] = 0xff; 3050 ctx->ref_tag_mask[1] = 0xff; 3051 ctx->ref_tag_mask[2] = 0xff; 3052 ctx->ref_tag_mask[3] = 0xff; 3053 break; 3054 case TARGET_DIF_TYPE3_PROT: 3055 /* For TYPE 3 protection: 16 bit GUARD only */ 3056 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3057 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3058 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3059 break; 3060 } 3061 } 3062 3063 static inline int 3064 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3065 { 3066 struct dsd64 *cur_dsd; 3067 uint32_t transfer_length = 0; 3068 uint32_t data_bytes; 3069 uint32_t dif_bytes; 3070 uint8_t bundling = 1; 3071 struct crc_context *crc_ctx_pkt = NULL; 3072 struct qla_hw_data *ha; 3073 struct ctio_crc2_to_fw *pkt; 3074 dma_addr_t crc_ctx_dma; 3075 uint16_t fw_prot_opts = 0; 3076 struct qla_tgt_cmd *cmd = prm->cmd; 3077 struct se_cmd *se_cmd = &cmd->se_cmd; 3078 uint32_t h; 3079 struct atio_from_isp *atio = &prm->cmd->atio; 3080 struct qla_tc_param tc; 3081 uint16_t t16; 3082 scsi_qla_host_t *vha = cmd->vha; 3083 3084 ha = vha->hw; 3085 3086 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3087 prm->pkt = pkt; 3088 memset(pkt, 0, sizeof(*pkt)); 3089 3090 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3091 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3092 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3093 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3094 3095 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3096 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3097 bundling = 0; 3098 3099 /* Compute dif len and adjust data len to incude protection */ 3100 data_bytes = cmd->bufflen; 3101 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3102 3103 switch (se_cmd->prot_op) { 3104 case TARGET_PROT_DIN_INSERT: 3105 case TARGET_PROT_DOUT_STRIP: 3106 transfer_length = data_bytes; 3107 if (cmd->prot_sg_cnt) 3108 data_bytes += dif_bytes; 3109 break; 3110 case TARGET_PROT_DIN_STRIP: 3111 case TARGET_PROT_DOUT_INSERT: 3112 case TARGET_PROT_DIN_PASS: 3113 case TARGET_PROT_DOUT_PASS: 3114 transfer_length = data_bytes + dif_bytes; 3115 break; 3116 default: 3117 BUG(); 3118 break; 3119 } 3120 3121 if (!qlt_hba_err_chk_enabled(se_cmd)) 3122 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3123 /* HBA error checking enabled */ 3124 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3125 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3126 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3127 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3128 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3129 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3130 } 3131 3132 switch (se_cmd->prot_op) { 3133 case TARGET_PROT_DIN_INSERT: 3134 case TARGET_PROT_DOUT_INSERT: 3135 fw_prot_opts |= PO_MODE_DIF_INSERT; 3136 break; 3137 case TARGET_PROT_DIN_STRIP: 3138 case TARGET_PROT_DOUT_STRIP: 3139 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3140 break; 3141 case TARGET_PROT_DIN_PASS: 3142 case TARGET_PROT_DOUT_PASS: 3143 fw_prot_opts |= PO_MODE_DIF_PASS; 3144 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3145 break; 3146 default:/* Normal Request */ 3147 fw_prot_opts |= PO_MODE_DIF_PASS; 3148 break; 3149 } 3150 3151 /* ---- PKT ---- */ 3152 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3153 pkt->entry_type = CTIO_CRC2; 3154 pkt->entry_count = 1; 3155 pkt->vp_index = cmd->vp_idx; 3156 3157 h = qlt_make_handle(qpair); 3158 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3159 /* 3160 * CTIO type 7 from the firmware doesn't provide a way to 3161 * know the initiator's LOOP ID, hence we can't find 3162 * the session and, so, the command. 3163 */ 3164 return -EAGAIN; 3165 } else 3166 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3167 3168 pkt->handle = make_handle(qpair->req->id, h); 3169 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3170 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3171 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3172 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3173 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3174 3175 /* silence compile warning */ 3176 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3177 pkt->ox_id = cpu_to_le16(t16); 3178 3179 t16 = (atio->u.isp24.attr << 9); 3180 pkt->flags |= cpu_to_le16(t16); 3181 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3182 3183 /* Set transfer direction */ 3184 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3185 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3186 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3187 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3188 3189 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3190 /* Fibre channel byte count */ 3191 pkt->transfer_length = cpu_to_le32(transfer_length); 3192 3193 /* ----- CRC context -------- */ 3194 3195 /* Allocate CRC context from global pool */ 3196 crc_ctx_pkt = cmd->ctx = 3197 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3198 3199 if (!crc_ctx_pkt) 3200 goto crc_queuing_error; 3201 3202 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3203 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3204 3205 /* Set handle */ 3206 crc_ctx_pkt->handle = pkt->handle; 3207 3208 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3209 3210 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3211 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3212 3213 if (!bundling) { 3214 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3215 } else { 3216 /* 3217 * Configure Bundling if we need to fetch interlaving 3218 * protection PCI accesses 3219 */ 3220 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3221 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3222 crc_ctx_pkt->u.bundling.dseg_count = 3223 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3224 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3225 } 3226 3227 /* Finish the common fields of CRC pkt */ 3228 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3229 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3230 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3231 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3232 3233 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3234 tc.vha = vha; 3235 tc.blk_sz = cmd->blk_sz; 3236 tc.bufflen = cmd->bufflen; 3237 tc.sg = cmd->sg; 3238 tc.prot_sg = cmd->prot_sg; 3239 tc.ctx = crc_ctx_pkt; 3240 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3241 3242 /* Walks data segments */ 3243 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3244 3245 if (!bundling && prm->prot_seg_cnt) { 3246 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3247 prm->tot_dsds, &tc)) 3248 goto crc_queuing_error; 3249 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3250 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3251 goto crc_queuing_error; 3252 3253 if (bundling && prm->prot_seg_cnt) { 3254 /* Walks dif segments */ 3255 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3256 3257 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3258 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3259 prm->prot_seg_cnt, cmd)) 3260 goto crc_queuing_error; 3261 } 3262 return QLA_SUCCESS; 3263 3264 crc_queuing_error: 3265 /* Cleanup will be performed by the caller */ 3266 qpair->req->outstanding_cmds[h] = NULL; 3267 3268 return QLA_FUNCTION_FAILED; 3269 } 3270 3271 /* 3272 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3273 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3274 */ 3275 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3276 uint8_t scsi_status) 3277 { 3278 struct scsi_qla_host *vha = cmd->vha; 3279 struct qla_qpair *qpair = cmd->qpair; 3280 struct ctio7_to_24xx *pkt; 3281 struct qla_tgt_prm prm; 3282 uint32_t full_req_cnt = 0; 3283 unsigned long flags = 0; 3284 int res; 3285 3286 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3287 (cmd->sess && cmd->sess->deleted)) { 3288 cmd->state = QLA_TGT_STATE_PROCESSED; 3289 return 0; 3290 } 3291 3292 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3293 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3294 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3295 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3296 &cmd->se_cmd, qpair->id); 3297 3298 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3299 &full_req_cnt); 3300 if (unlikely(res != 0)) { 3301 return res; 3302 } 3303 3304 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3305 3306 if (xmit_type == QLA_TGT_XMIT_STATUS) 3307 qpair->tgt_counters.core_qla_snd_status++; 3308 else 3309 qpair->tgt_counters.core_qla_que_buf++; 3310 3311 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3312 /* 3313 * Either the port is not online or this request was from 3314 * previous life, just abort the processing. 3315 */ 3316 cmd->state = QLA_TGT_STATE_PROCESSED; 3317 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3318 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3319 vha->flags.online, qla2x00_reset_active(vha), 3320 cmd->reset_count, qpair->chip_reset); 3321 res = 0; 3322 goto out_unmap_unlock; 3323 } 3324 3325 /* Does F/W have an IOCBs for this request */ 3326 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3327 if (unlikely(res)) 3328 goto out_unmap_unlock; 3329 3330 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3331 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3332 else 3333 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3334 if (unlikely(res != 0)) { 3335 qpair->req->cnt += full_req_cnt; 3336 goto out_unmap_unlock; 3337 } 3338 3339 pkt = (struct ctio7_to_24xx *)prm.pkt; 3340 3341 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3342 pkt->u.status0.flags |= 3343 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3344 CTIO7_FLAGS_STATUS_MODE_0); 3345 3346 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3347 qlt_load_data_segments(&prm); 3348 3349 if (prm.add_status_pkt == 0) { 3350 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3351 pkt->u.status0.scsi_status = 3352 cpu_to_le16(prm.rq_result); 3353 if (!cmd->edif) 3354 pkt->u.status0.residual = 3355 cpu_to_le32(prm.residual); 3356 3357 pkt->u.status0.flags |= cpu_to_le16( 3358 CTIO7_FLAGS_SEND_STATUS); 3359 if (qlt_need_explicit_conf(cmd, 0)) { 3360 pkt->u.status0.flags |= 3361 cpu_to_le16( 3362 CTIO7_FLAGS_EXPLICIT_CONFORM | 3363 CTIO7_FLAGS_CONFORM_REQ); 3364 } 3365 } 3366 3367 } else { 3368 /* 3369 * We have already made sure that there is sufficient 3370 * amount of request entries to not drop HW lock in 3371 * req_pkt(). 3372 */ 3373 struct ctio7_to_24xx *ctio = 3374 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3375 qpair->req); 3376 3377 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3378 "Building additional status packet 0x%p.\n", 3379 ctio); 3380 3381 /* 3382 * T10Dif: ctio_crc2_to_fw overlay ontop of 3383 * ctio7_to_24xx 3384 */ 3385 memcpy(ctio, pkt, sizeof(*ctio)); 3386 /* reset back to CTIO7 */ 3387 ctio->entry_count = 1; 3388 ctio->entry_type = CTIO_TYPE7; 3389 ctio->dseg_count = 0; 3390 ctio->u.status1.flags &= ~cpu_to_le16( 3391 CTIO7_FLAGS_DATA_IN); 3392 3393 /* Real finish is ctio_m1's finish */ 3394 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3395 pkt->u.status0.flags |= cpu_to_le16( 3396 CTIO7_FLAGS_DONT_RET_CTIO); 3397 3398 /* qlt_24xx_init_ctio_to_isp will correct 3399 * all neccessary fields that's part of CTIO7. 3400 * There should be no residual of CTIO-CRC2 data. 3401 */ 3402 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3403 &prm); 3404 } 3405 } else 3406 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3407 3408 3409 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3410 cmd->cmd_sent_to_fw = 1; 3411 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3412 3413 /* Memory Barrier */ 3414 wmb(); 3415 if (qpair->reqq_start_iocbs) 3416 qpair->reqq_start_iocbs(qpair); 3417 else 3418 qla2x00_start_iocbs(vha, qpair->req); 3419 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3420 3421 return 0; 3422 3423 out_unmap_unlock: 3424 qlt_unmap_sg(vha, cmd); 3425 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3426 3427 return res; 3428 } 3429 EXPORT_SYMBOL(qlt_xmit_response); 3430 3431 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3432 { 3433 struct ctio7_to_24xx *pkt; 3434 struct scsi_qla_host *vha = cmd->vha; 3435 struct qla_tgt *tgt = cmd->tgt; 3436 struct qla_tgt_prm prm; 3437 unsigned long flags = 0; 3438 int res = 0; 3439 struct qla_qpair *qpair = cmd->qpair; 3440 3441 memset(&prm, 0, sizeof(prm)); 3442 prm.cmd = cmd; 3443 prm.tgt = tgt; 3444 prm.sg = NULL; 3445 prm.req_cnt = 1; 3446 3447 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3448 (cmd->sess && cmd->sess->deleted)) { 3449 /* 3450 * Either the port is not online or this request was from 3451 * previous life, just abort the processing. 3452 */ 3453 cmd->aborted = 1; 3454 cmd->write_data_transferred = 0; 3455 cmd->state = QLA_TGT_STATE_DATA_IN; 3456 vha->hw->tgt.tgt_ops->handle_data(cmd); 3457 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3458 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3459 vha->flags.online, qla2x00_reset_active(vha), 3460 cmd->reset_count, qpair->chip_reset); 3461 return 0; 3462 } 3463 3464 /* Calculate number of entries and segments required */ 3465 if (qlt_pci_map_calc_cnt(&prm) != 0) 3466 return -EAGAIN; 3467 3468 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3469 /* Does F/W have an IOCBs for this request */ 3470 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3471 if (res != 0) 3472 goto out_unlock_free_unmap; 3473 if (cmd->se_cmd.prot_op) 3474 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3475 else 3476 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3477 3478 if (unlikely(res != 0)) { 3479 qpair->req->cnt += prm.req_cnt; 3480 goto out_unlock_free_unmap; 3481 } 3482 3483 pkt = (struct ctio7_to_24xx *)prm.pkt; 3484 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3485 CTIO7_FLAGS_STATUS_MODE_0); 3486 3487 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3488 qlt_load_data_segments(&prm); 3489 3490 cmd->state = QLA_TGT_STATE_NEED_DATA; 3491 cmd->cmd_sent_to_fw = 1; 3492 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3493 3494 /* Memory Barrier */ 3495 wmb(); 3496 if (qpair->reqq_start_iocbs) 3497 qpair->reqq_start_iocbs(qpair); 3498 else 3499 qla2x00_start_iocbs(vha, qpair->req); 3500 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3501 3502 return res; 3503 3504 out_unlock_free_unmap: 3505 qlt_unmap_sg(vha, cmd); 3506 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3507 3508 return res; 3509 } 3510 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3511 3512 3513 /* 3514 * it is assumed either hardware_lock or qpair lock is held. 3515 */ 3516 static void 3517 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3518 struct ctio_crc_from_fw *sts) 3519 { 3520 uint8_t *ap = &sts->actual_dif[0]; 3521 uint8_t *ep = &sts->expected_dif[0]; 3522 uint64_t lba = cmd->se_cmd.t_task_lba; 3523 uint8_t scsi_status, sense_key, asc, ascq; 3524 unsigned long flags; 3525 struct scsi_qla_host *vha = cmd->vha; 3526 3527 cmd->trc_flags |= TRC_DIF_ERR; 3528 3529 cmd->a_guard = get_unaligned_be16(ap + 0); 3530 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3531 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3532 3533 cmd->e_guard = get_unaligned_be16(ep + 0); 3534 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3535 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3536 3537 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3538 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3539 3540 scsi_status = sense_key = asc = ascq = 0; 3541 3542 /* check appl tag */ 3543 if (cmd->e_app_tag != cmd->a_app_tag) { 3544 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3545 "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]", 3546 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3547 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3548 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3549 cmd->atio.u.isp24.fcp_hdr.ox_id); 3550 3551 cmd->dif_err_code = DIF_ERR_APP; 3552 scsi_status = SAM_STAT_CHECK_CONDITION; 3553 sense_key = ABORTED_COMMAND; 3554 asc = 0x10; 3555 ascq = 0x2; 3556 } 3557 3558 /* check ref tag */ 3559 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3560 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3561 "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] ", 3562 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3563 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3564 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3565 cmd->atio.u.isp24.fcp_hdr.ox_id); 3566 3567 cmd->dif_err_code = DIF_ERR_REF; 3568 scsi_status = SAM_STAT_CHECK_CONDITION; 3569 sense_key = ABORTED_COMMAND; 3570 asc = 0x10; 3571 ascq = 0x3; 3572 goto out; 3573 } 3574 3575 /* check guard */ 3576 if (cmd->e_guard != cmd->a_guard) { 3577 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3578 "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]", 3579 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3580 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3581 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3582 cmd->atio.u.isp24.fcp_hdr.ox_id); 3583 3584 cmd->dif_err_code = DIF_ERR_GRD; 3585 scsi_status = SAM_STAT_CHECK_CONDITION; 3586 sense_key = ABORTED_COMMAND; 3587 asc = 0x10; 3588 ascq = 0x1; 3589 } 3590 out: 3591 switch (cmd->state) { 3592 case QLA_TGT_STATE_NEED_DATA: 3593 /* handle_data will load DIF error code */ 3594 cmd->state = QLA_TGT_STATE_DATA_IN; 3595 vha->hw->tgt.tgt_ops->handle_data(cmd); 3596 break; 3597 default: 3598 spin_lock_irqsave(&cmd->cmd_lock, flags); 3599 if (cmd->aborted) { 3600 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3601 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3602 break; 3603 } 3604 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3605 3606 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3607 ascq); 3608 /* assume scsi status gets out on the wire. 3609 * Will not wait for completion. 3610 */ 3611 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3612 break; 3613 } 3614 } 3615 3616 /* If hardware_lock held on entry, might drop it, then reaquire */ 3617 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3618 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3619 struct imm_ntfy_from_isp *ntfy) 3620 { 3621 struct nack_to_isp *nack; 3622 struct qla_hw_data *ha = vha->hw; 3623 request_t *pkt; 3624 int ret = 0; 3625 3626 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3627 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3628 3629 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3630 if (pkt == NULL) { 3631 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3632 "qla_target(%d): %s failed: unable to allocate " 3633 "request packet\n", vha->vp_idx, __func__); 3634 return -ENOMEM; 3635 } 3636 3637 pkt->entry_type = NOTIFY_ACK_TYPE; 3638 pkt->entry_count = 1; 3639 pkt->handle = QLA_TGT_SKIP_HANDLE; 3640 3641 nack = (struct nack_to_isp *)pkt; 3642 nack->ox_id = ntfy->ox_id; 3643 3644 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3645 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3646 nack->u.isp24.flags = ntfy->u.isp24.flags & 3647 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3648 } 3649 3650 /* terminate */ 3651 nack->u.isp24.flags |= 3652 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3653 3654 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3655 nack->u.isp24.status = ntfy->u.isp24.status; 3656 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3657 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3658 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3659 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3660 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3661 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3662 3663 qla2x00_start_iocbs(vha, vha->req); 3664 return ret; 3665 } 3666 3667 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3668 struct imm_ntfy_from_isp *imm, int ha_locked) 3669 { 3670 int rc; 3671 3672 WARN_ON_ONCE(!ha_locked); 3673 rc = __qlt_send_term_imm_notif(vha, imm); 3674 pr_debug("rc = %d\n", rc); 3675 } 3676 3677 /* 3678 * If hardware_lock held on entry, might drop it, then reaquire 3679 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3680 */ 3681 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3682 struct qla_tgt_cmd *cmd, 3683 struct atio_from_isp *atio) 3684 { 3685 struct scsi_qla_host *vha = qpair->vha; 3686 struct ctio7_to_24xx *ctio24; 3687 struct qla_hw_data *ha = vha->hw; 3688 request_t *pkt; 3689 int ret = 0; 3690 uint16_t temp; 3691 3692 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3693 3694 if (cmd) 3695 vha = cmd->vha; 3696 3697 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3698 if (pkt == NULL) { 3699 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3700 "qla_target(%d): %s failed: unable to allocate " 3701 "request packet\n", vha->vp_idx, __func__); 3702 return -ENOMEM; 3703 } 3704 3705 if (cmd != NULL) { 3706 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3707 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3708 "qla_target(%d): Terminating cmd %p with " 3709 "incorrect state %d\n", vha->vp_idx, cmd, 3710 cmd->state); 3711 } else 3712 ret = 1; 3713 } 3714 3715 qpair->tgt_counters.num_term_xchg_sent++; 3716 pkt->entry_count = 1; 3717 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3718 3719 ctio24 = (struct ctio7_to_24xx *)pkt; 3720 ctio24->entry_type = CTIO_TYPE7; 3721 ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); 3722 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3723 ctio24->vp_index = vha->vp_idx; 3724 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3725 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3726 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3727 CTIO7_FLAGS_TERMINATE; 3728 ctio24->u.status1.flags = cpu_to_le16(temp); 3729 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3730 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3731 3732 /* Memory Barrier */ 3733 wmb(); 3734 if (qpair->reqq_start_iocbs) 3735 qpair->reqq_start_iocbs(qpair); 3736 else 3737 qla2x00_start_iocbs(vha, qpair->req); 3738 return ret; 3739 } 3740 3741 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3742 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3743 int ul_abort) 3744 { 3745 struct scsi_qla_host *vha; 3746 unsigned long flags = 0; 3747 int rc; 3748 3749 /* why use different vha? NPIV */ 3750 if (cmd) 3751 vha = cmd->vha; 3752 else 3753 vha = qpair->vha; 3754 3755 if (ha_locked) { 3756 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3757 if (rc == -ENOMEM) 3758 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3759 goto done; 3760 } 3761 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3762 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3763 if (rc == -ENOMEM) 3764 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3765 3766 done: 3767 if (cmd && !ul_abort && !cmd->aborted) { 3768 if (cmd->sg_mapped) 3769 qlt_unmap_sg(vha, cmd); 3770 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3771 } 3772 3773 if (!ha_locked) 3774 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3775 3776 return; 3777 } 3778 3779 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3780 { 3781 struct list_head free_list; 3782 struct qla_tgt_cmd *cmd, *tcmd; 3783 3784 vha->hw->tgt.leak_exchg_thresh_hold = 3785 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3786 3787 cmd = tcmd = NULL; 3788 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3789 INIT_LIST_HEAD(&free_list); 3790 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3791 3792 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3793 list_del(&cmd->cmd_list); 3794 /* This cmd was never sent to TCM. There is no need 3795 * to schedule free or call free_cmd 3796 */ 3797 qlt_free_cmd(cmd); 3798 vha->hw->tgt.num_qfull_cmds_alloc--; 3799 } 3800 } 3801 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3802 } 3803 3804 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3805 { 3806 uint32_t total_leaked; 3807 3808 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3809 3810 if (vha->hw->tgt.leak_exchg_thresh_hold && 3811 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3812 3813 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3814 "Chip reset due to exchange starvation: %d/%d.\n", 3815 total_leaked, vha->hw->cur_fw_xcb_count); 3816 3817 if (IS_P3P_TYPE(vha->hw)) 3818 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3819 else 3820 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3821 qla2xxx_wake_dpc(vha); 3822 } 3823 3824 } 3825 3826 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3827 { 3828 struct qla_tgt *tgt = cmd->tgt; 3829 struct scsi_qla_host *vha = tgt->vha; 3830 struct se_cmd *se_cmd = &cmd->se_cmd; 3831 unsigned long flags; 3832 3833 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3834 "qla_target(%d): terminating exchange for aborted cmd=%p " 3835 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3836 se_cmd->tag); 3837 3838 spin_lock_irqsave(&cmd->cmd_lock, flags); 3839 if (cmd->aborted) { 3840 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3841 /* 3842 * It's normal to see 2 calls in this path: 3843 * 1) XFER Rdy completion + CMD_T_ABORT 3844 * 2) TCM TMR - drain_state_list 3845 */ 3846 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3847 "multiple abort. %p transport_state %x, t_state %x, " 3848 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3849 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3850 return -EIO; 3851 } 3852 cmd->aborted = 1; 3853 cmd->trc_flags |= TRC_ABORT; 3854 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3855 3856 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3857 return 0; 3858 } 3859 EXPORT_SYMBOL(qlt_abort_cmd); 3860 3861 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3862 { 3863 struct fc_port *sess = cmd->sess; 3864 3865 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3866 "%s: se_cmd[%p] ox_id %04x\n", 3867 __func__, &cmd->se_cmd, 3868 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3869 3870 BUG_ON(cmd->cmd_in_wq); 3871 3872 if (!cmd->q_full) 3873 qlt_decr_num_pend_cmds(cmd->vha); 3874 3875 BUG_ON(cmd->sg_mapped); 3876 cmd->jiffies_at_free = get_jiffies_64(); 3877 if (unlikely(cmd->free_sg)) 3878 kfree(cmd->sg); 3879 3880 if (!sess || !sess->se_sess) { 3881 WARN_ON(1); 3882 return; 3883 } 3884 cmd->jiffies_at_free = get_jiffies_64(); 3885 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3886 } 3887 EXPORT_SYMBOL(qlt_free_cmd); 3888 3889 /* 3890 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3891 */ 3892 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3893 struct qla_tgt_cmd *cmd, uint32_t status) 3894 { 3895 int term = 0; 3896 struct scsi_qla_host *vha = qpair->vha; 3897 3898 if (cmd->se_cmd.prot_op) 3899 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3900 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3901 "se_cmd=%p tag[%x] op %#x/%s", 3902 cmd->lba, cmd->lba, 3903 cmd->num_blks, &cmd->se_cmd, 3904 cmd->atio.u.isp24.exchange_addr, 3905 cmd->se_cmd.prot_op, 3906 prot_op_str(cmd->se_cmd.prot_op)); 3907 3908 if (ctio != NULL) { 3909 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3910 3911 term = !(c->flags & 3912 cpu_to_le16(OF_TERM_EXCH)); 3913 } else 3914 term = 1; 3915 3916 if (term) 3917 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3918 3919 return term; 3920 } 3921 3922 3923 /* ha->hardware_lock supposed to be held on entry */ 3924 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3925 struct rsp_que *rsp, uint32_t handle, void *ctio) 3926 { 3927 void *cmd = NULL; 3928 struct req_que *req; 3929 int qid = GET_QID(handle); 3930 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3931 3932 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3933 return NULL; 3934 3935 if (qid == rsp->req->id) { 3936 req = rsp->req; 3937 } else if (vha->hw->req_q_map[qid]) { 3938 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3939 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3940 vha->vp_idx, rsp->id, handle); 3941 req = vha->hw->req_q_map[qid]; 3942 } else { 3943 return NULL; 3944 } 3945 3946 h &= QLA_CMD_HANDLE_MASK; 3947 3948 if (h != QLA_TGT_NULL_HANDLE) { 3949 if (unlikely(h >= req->num_outstanding_cmds)) { 3950 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3951 "qla_target(%d): Wrong handle %x received\n", 3952 vha->vp_idx, handle); 3953 return NULL; 3954 } 3955 3956 cmd = req->outstanding_cmds[h]; 3957 if (unlikely(cmd == NULL)) { 3958 ql_dbg(ql_dbg_async, vha, 0xe053, 3959 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3960 vha->vp_idx, handle, req->id, rsp->id); 3961 return NULL; 3962 } 3963 req->outstanding_cmds[h] = NULL; 3964 } else if (ctio != NULL) { 3965 /* We can't get loop ID from CTIO7 */ 3966 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3967 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3968 "support NULL handles\n", vha->vp_idx); 3969 return NULL; 3970 } 3971 3972 return cmd; 3973 } 3974 3975 /* 3976 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3977 */ 3978 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3979 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3980 { 3981 struct qla_hw_data *ha = vha->hw; 3982 struct se_cmd *se_cmd; 3983 struct qla_tgt_cmd *cmd; 3984 struct qla_qpair *qpair = rsp->qpair; 3985 3986 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3987 /* That could happen only in case of an error/reset/abort */ 3988 if (status != CTIO_SUCCESS) { 3989 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3990 "Intermediate CTIO received" 3991 " (status %x)\n", status); 3992 } 3993 return; 3994 } 3995 3996 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3997 if (cmd == NULL) 3998 return; 3999 4000 if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && 4001 cmd->sess) { 4002 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, 4003 (struct ctio7_from_24xx *)ctio); 4004 } 4005 4006 se_cmd = &cmd->se_cmd; 4007 cmd->cmd_sent_to_fw = 0; 4008 4009 qlt_unmap_sg(vha, cmd); 4010 4011 if (unlikely(status != CTIO_SUCCESS)) { 4012 switch (status & 0xFFFF) { 4013 case CTIO_INVALID_RX_ID: 4014 if (printk_ratelimit()) 4015 dev_info(&vha->hw->pdev->dev, 4016 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4017 vha->vp_idx, cmd->atio.u.isp24.attr, 4018 ((cmd->ctio_flags >> 9) & 0xf), 4019 cmd->ctio_flags); 4020 4021 break; 4022 case CTIO_LIP_RESET: 4023 case CTIO_TARGET_RESET: 4024 case CTIO_ABORTED: 4025 /* driver request abort via Terminate exchange */ 4026 case CTIO_TIMEOUT: 4027 /* They are OK */ 4028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4029 "qla_target(%d): CTIO with " 4030 "status %#x received, state %x, se_cmd %p, " 4031 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4032 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4033 status, cmd->state, se_cmd); 4034 break; 4035 4036 case CTIO_PORT_LOGGED_OUT: 4037 case CTIO_PORT_UNAVAILABLE: 4038 { 4039 int logged_out = 4040 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4041 4042 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4043 "qla_target(%d): CTIO with %s status %x " 4044 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4045 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4046 status, cmd->state, se_cmd); 4047 4048 if (logged_out && cmd->sess) { 4049 /* 4050 * Session is already logged out, but we need 4051 * to notify initiator, who's not aware of this 4052 */ 4053 cmd->sess->send_els_logo = 1; 4054 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4055 "%s %d %8phC post del sess\n", 4056 __func__, __LINE__, cmd->sess->port_name); 4057 4058 qlt_schedule_sess_for_deletion(cmd->sess); 4059 } 4060 break; 4061 } 4062 case CTIO_DIF_ERROR: { 4063 struct ctio_crc_from_fw *crc = 4064 (struct ctio_crc_from_fw *)ctio; 4065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4066 "qla_target(%d): CTIO with DIF_ERROR status %x " 4067 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4068 "expect_dif[0x%llx]\n", 4069 vha->vp_idx, status, cmd->state, se_cmd, 4070 *((u64 *)&crc->actual_dif[0]), 4071 *((u64 *)&crc->expected_dif[0])); 4072 4073 qlt_handle_dif_error(qpair, cmd, ctio); 4074 return; 4075 } 4076 4077 case CTIO_FAST_AUTH_ERR: 4078 case CTIO_FAST_INCOMP_PAD_LEN: 4079 case CTIO_FAST_INVALID_REQ: 4080 case CTIO_FAST_SPI_ERR: 4081 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4082 "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", 4083 vha->vp_idx, status, cmd->state, se_cmd); 4084 break; 4085 4086 default: 4087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4088 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4089 vha->vp_idx, status, cmd->state, se_cmd); 4090 break; 4091 } 4092 4093 4094 /* "cmd->aborted" means 4095 * cmd is already aborted/terminated, we don't 4096 * need to terminate again. The exchange is already 4097 * cleaned up/freed at FW level. Just cleanup at driver 4098 * level. 4099 */ 4100 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4101 (!cmd->aborted)) { 4102 cmd->trc_flags |= TRC_CTIO_ERR; 4103 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4104 return; 4105 } 4106 } 4107 4108 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4109 cmd->trc_flags |= TRC_CTIO_DONE; 4110 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4111 cmd->state = QLA_TGT_STATE_DATA_IN; 4112 4113 if (status == CTIO_SUCCESS) 4114 cmd->write_data_transferred = 1; 4115 4116 ha->tgt.tgt_ops->handle_data(cmd); 4117 return; 4118 } else if (cmd->aborted) { 4119 cmd->trc_flags |= TRC_CTIO_ABORTED; 4120 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4121 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4122 } else { 4123 cmd->trc_flags |= TRC_CTIO_STRANGE; 4124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4125 "qla_target(%d): A command in state (%d) should " 4126 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4127 } 4128 4129 if (unlikely(status != CTIO_SUCCESS) && 4130 !cmd->aborted) { 4131 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4132 dump_stack(); 4133 } 4134 4135 ha->tgt.tgt_ops->free_cmd(cmd); 4136 } 4137 4138 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4139 uint8_t task_codes) 4140 { 4141 int fcp_task_attr; 4142 4143 switch (task_codes) { 4144 case ATIO_SIMPLE_QUEUE: 4145 fcp_task_attr = TCM_SIMPLE_TAG; 4146 break; 4147 case ATIO_HEAD_OF_QUEUE: 4148 fcp_task_attr = TCM_HEAD_TAG; 4149 break; 4150 case ATIO_ORDERED_QUEUE: 4151 fcp_task_attr = TCM_ORDERED_TAG; 4152 break; 4153 case ATIO_ACA_QUEUE: 4154 fcp_task_attr = TCM_ACA_TAG; 4155 break; 4156 case ATIO_UNTAGGED: 4157 fcp_task_attr = TCM_SIMPLE_TAG; 4158 break; 4159 default: 4160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4161 "qla_target: unknown task code %x, use ORDERED instead\n", 4162 task_codes); 4163 fcp_task_attr = TCM_ORDERED_TAG; 4164 break; 4165 } 4166 4167 return fcp_task_attr; 4168 } 4169 4170 /* 4171 * Process context for I/O path into tcm_qla2xxx code 4172 */ 4173 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4174 { 4175 scsi_qla_host_t *vha = cmd->vha; 4176 struct qla_hw_data *ha = vha->hw; 4177 struct fc_port *sess = cmd->sess; 4178 struct atio_from_isp *atio = &cmd->atio; 4179 unsigned char *cdb; 4180 unsigned long flags; 4181 uint32_t data_length; 4182 int ret, fcp_task_attr, data_dir, bidi = 0; 4183 struct qla_qpair *qpair = cmd->qpair; 4184 4185 cmd->cmd_in_wq = 0; 4186 cmd->trc_flags |= TRC_DO_WORK; 4187 4188 if (cmd->aborted) { 4189 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4190 "cmd with tag %u is aborted\n", 4191 cmd->atio.u.isp24.exchange_addr); 4192 goto out_term; 4193 } 4194 4195 spin_lock_init(&cmd->cmd_lock); 4196 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4197 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4198 4199 if (atio->u.isp24.fcp_cmnd.rddata && 4200 atio->u.isp24.fcp_cmnd.wrdata) { 4201 bidi = 1; 4202 data_dir = DMA_TO_DEVICE; 4203 } else if (atio->u.isp24.fcp_cmnd.rddata) 4204 data_dir = DMA_FROM_DEVICE; 4205 else if (atio->u.isp24.fcp_cmnd.wrdata) 4206 data_dir = DMA_TO_DEVICE; 4207 else 4208 data_dir = DMA_NONE; 4209 4210 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4211 atio->u.isp24.fcp_cmnd.task_attr); 4212 data_length = get_datalen_for_atio(atio); 4213 4214 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4215 fcp_task_attr, data_dir, bidi); 4216 if (ret != 0) 4217 goto out_term; 4218 /* 4219 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4220 */ 4221 ha->tgt.tgt_ops->put_sess(sess); 4222 return; 4223 4224 out_term: 4225 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4226 /* 4227 * cmd has not sent to target yet, so pass NULL as the second 4228 * argument to qlt_send_term_exchange() and free the memory here. 4229 */ 4230 cmd->trc_flags |= TRC_DO_WORK_ERR; 4231 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4232 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4233 4234 qlt_decr_num_pend_cmds(vha); 4235 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4236 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4237 4238 ha->tgt.tgt_ops->put_sess(sess); 4239 } 4240 4241 static void qlt_do_work(struct work_struct *work) 4242 { 4243 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4244 scsi_qla_host_t *vha = cmd->vha; 4245 unsigned long flags; 4246 4247 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4248 list_del(&cmd->cmd_list); 4249 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4250 4251 __qlt_do_work(cmd); 4252 } 4253 4254 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4255 { 4256 unsigned long flags; 4257 struct qla_hw_data *ha = vha->hw; 4258 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4259 void *node; 4260 u64 key = 0; 4261 4262 ql_log(ql_log_info, vha, 0x706c, 4263 "User update Number of Active Qpairs %d\n", 4264 ha->tgt.num_act_qpairs); 4265 4266 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4267 4268 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4269 btree_remove64(&tgt->lun_qpair_map, key); 4270 4271 ha->base_qpair->lun_cnt = 0; 4272 for (key = 0; key < ha->max_qpairs; key++) 4273 if (ha->queue_pair_map[key]) 4274 ha->queue_pair_map[key]->lun_cnt = 0; 4275 4276 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4277 } 4278 4279 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4280 struct qla_tgt_cmd *cmd) 4281 { 4282 struct qla_qpair *qpair, *qp; 4283 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4284 struct qla_qpair_hint *h; 4285 4286 if (vha->flags.qpairs_available) { 4287 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4288 if (unlikely(!h)) { 4289 /* spread lun to qpair ratio evently */ 4290 int lcnt = 0, rc; 4291 struct scsi_qla_host *base_vha = 4292 pci_get_drvdata(vha->hw->pdev); 4293 4294 qpair = vha->hw->base_qpair; 4295 if (qpair->lun_cnt == 0) { 4296 qpair->lun_cnt++; 4297 h = qla_qpair_to_hint(tgt, qpair); 4298 BUG_ON(!h); 4299 rc = btree_insert64(&tgt->lun_qpair_map, 4300 cmd->unpacked_lun, h, GFP_ATOMIC); 4301 if (rc) { 4302 qpair->lun_cnt--; 4303 ql_log(ql_log_info, vha, 0xd037, 4304 "Unable to insert lun %llx into lun_qpair_map\n", 4305 cmd->unpacked_lun); 4306 } 4307 goto out; 4308 } else { 4309 lcnt = qpair->lun_cnt; 4310 } 4311 4312 h = NULL; 4313 list_for_each_entry(qp, &base_vha->qp_list, 4314 qp_list_elem) { 4315 if (qp->lun_cnt == 0) { 4316 qp->lun_cnt++; 4317 h = qla_qpair_to_hint(tgt, qp); 4318 BUG_ON(!h); 4319 rc = btree_insert64(&tgt->lun_qpair_map, 4320 cmd->unpacked_lun, h, GFP_ATOMIC); 4321 if (rc) { 4322 qp->lun_cnt--; 4323 ql_log(ql_log_info, vha, 0xd038, 4324 "Unable to insert lun %llx into lun_qpair_map\n", 4325 cmd->unpacked_lun); 4326 } 4327 qpair = qp; 4328 goto out; 4329 } else { 4330 if (qp->lun_cnt < lcnt) { 4331 lcnt = qp->lun_cnt; 4332 qpair = qp; 4333 continue; 4334 } 4335 } 4336 } 4337 BUG_ON(!qpair); 4338 qpair->lun_cnt++; 4339 h = qla_qpair_to_hint(tgt, qpair); 4340 BUG_ON(!h); 4341 rc = btree_insert64(&tgt->lun_qpair_map, 4342 cmd->unpacked_lun, h, GFP_ATOMIC); 4343 if (rc) { 4344 qpair->lun_cnt--; 4345 ql_log(ql_log_info, vha, 0xd039, 4346 "Unable to insert lun %llx into lun_qpair_map\n", 4347 cmd->unpacked_lun); 4348 } 4349 } 4350 } else { 4351 h = &tgt->qphints[0]; 4352 } 4353 out: 4354 cmd->qpair = h->qpair; 4355 cmd->se_cmd.cpuid = h->cpuid; 4356 } 4357 4358 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4359 struct fc_port *sess, 4360 struct atio_from_isp *atio) 4361 { 4362 struct qla_tgt_cmd *cmd; 4363 4364 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4365 if (!cmd) 4366 return NULL; 4367 4368 cmd->cmd_type = TYPE_TGT_CMD; 4369 memcpy(&cmd->atio, atio, sizeof(*atio)); 4370 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4371 cmd->state = QLA_TGT_STATE_NEW; 4372 cmd->tgt = vha->vha_tgt.qla_tgt; 4373 qlt_incr_num_pend_cmds(vha); 4374 cmd->vha = vha; 4375 cmd->sess = sess; 4376 cmd->loop_id = sess->loop_id; 4377 cmd->conf_compl_supported = sess->conf_compl_supported; 4378 4379 cmd->trc_flags = 0; 4380 cmd->jiffies_at_alloc = get_jiffies_64(); 4381 4382 cmd->unpacked_lun = scsilun_to_int( 4383 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4384 qlt_assign_qpair(vha, cmd); 4385 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4386 cmd->vp_idx = vha->vp_idx; 4387 cmd->edif = sess->edif.enable; 4388 4389 return cmd; 4390 } 4391 4392 /* ha->hardware_lock supposed to be held on entry */ 4393 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4394 struct atio_from_isp *atio) 4395 { 4396 struct qla_hw_data *ha = vha->hw; 4397 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4398 struct fc_port *sess; 4399 struct qla_tgt_cmd *cmd; 4400 unsigned long flags; 4401 port_id_t id; 4402 4403 if (unlikely(tgt->tgt_stop)) { 4404 ql_dbg(ql_dbg_io, vha, 0x3061, 4405 "New command while device %p is shutting down\n", tgt); 4406 return -ENODEV; 4407 } 4408 4409 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4410 if (IS_SW_RESV_ADDR(id)) 4411 return -EBUSY; 4412 4413 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4414 if (unlikely(!sess)) 4415 return -EFAULT; 4416 4417 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4418 * session deletion, but it's still in sess_del_work wq */ 4419 if (sess->deleted) { 4420 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4421 "New command while old session %p is being deleted\n", 4422 sess); 4423 return -EFAULT; 4424 } 4425 4426 /* 4427 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4428 */ 4429 if (!kref_get_unless_zero(&sess->sess_kref)) { 4430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4431 "%s: kref_get fail, %8phC oxid %x \n", 4432 __func__, sess->port_name, 4433 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4434 return -EFAULT; 4435 } 4436 4437 cmd = qlt_get_tag(vha, sess, atio); 4438 if (!cmd) { 4439 ql_dbg(ql_dbg_io, vha, 0x3062, 4440 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4441 ha->tgt.tgt_ops->put_sess(sess); 4442 return -EBUSY; 4443 } 4444 4445 cmd->cmd_in_wq = 1; 4446 cmd->trc_flags |= TRC_NEW_CMD; 4447 4448 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4449 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4450 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4451 4452 INIT_WORK(&cmd->work, qlt_do_work); 4453 if (vha->flags.qpairs_available) { 4454 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4455 } else if (ha->msix_count) { 4456 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4457 queue_work_on(smp_processor_id(), qla_tgt_wq, 4458 &cmd->work); 4459 else 4460 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4461 &cmd->work); 4462 } else { 4463 queue_work(qla_tgt_wq, &cmd->work); 4464 } 4465 4466 return 0; 4467 } 4468 4469 /* ha->hardware_lock supposed to be held on entry */ 4470 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4471 int fn, void *iocb, int flags) 4472 { 4473 struct scsi_qla_host *vha = sess->vha; 4474 struct qla_hw_data *ha = vha->hw; 4475 struct qla_tgt_mgmt_cmd *mcmd; 4476 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4477 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4478 4479 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4480 if (!mcmd) { 4481 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4482 "qla_target(%d): Allocation of management " 4483 "command failed, some commands and their data could " 4484 "leak\n", vha->vp_idx); 4485 return -ENOMEM; 4486 } 4487 memset(mcmd, 0, sizeof(*mcmd)); 4488 mcmd->sess = sess; 4489 4490 if (iocb) { 4491 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4492 sizeof(mcmd->orig_iocb.imm_ntfy)); 4493 } 4494 mcmd->tmr_func = fn; 4495 mcmd->flags = flags; 4496 mcmd->reset_count = ha->base_qpair->chip_reset; 4497 mcmd->qpair = h->qpair; 4498 mcmd->vha = vha; 4499 mcmd->se_cmd.cpuid = h->cpuid; 4500 mcmd->unpacked_lun = lun; 4501 4502 switch (fn) { 4503 case QLA_TGT_LUN_RESET: 4504 case QLA_TGT_CLEAR_TS: 4505 case QLA_TGT_ABORT_TS: 4506 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4507 fallthrough; 4508 case QLA_TGT_CLEAR_ACA: 4509 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4510 mcmd->qpair = h->qpair; 4511 mcmd->se_cmd.cpuid = h->cpuid; 4512 break; 4513 4514 case QLA_TGT_TARGET_RESET: 4515 case QLA_TGT_NEXUS_LOSS_SESS: 4516 case QLA_TGT_NEXUS_LOSS: 4517 case QLA_TGT_ABORT_ALL: 4518 default: 4519 /* no-op */ 4520 break; 4521 } 4522 4523 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4524 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4525 &mcmd->work); 4526 4527 return 0; 4528 } 4529 4530 /* ha->hardware_lock supposed to be held on entry */ 4531 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4532 { 4533 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4534 struct qla_hw_data *ha = vha->hw; 4535 struct fc_port *sess; 4536 u64 unpacked_lun; 4537 int fn; 4538 unsigned long flags; 4539 4540 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4541 4542 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4543 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4544 a->u.isp24.fcp_hdr.s_id); 4545 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4546 4547 unpacked_lun = 4548 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4549 4550 if (sess == NULL || sess->deleted) 4551 return -EFAULT; 4552 4553 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4554 } 4555 4556 /* ha->hardware_lock supposed to be held on entry */ 4557 static int __qlt_abort_task(struct scsi_qla_host *vha, 4558 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4559 { 4560 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4561 struct qla_hw_data *ha = vha->hw; 4562 struct qla_tgt_mgmt_cmd *mcmd; 4563 u64 unpacked_lun; 4564 int rc; 4565 4566 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4567 if (mcmd == NULL) { 4568 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4569 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4570 vha->vp_idx, __func__); 4571 return -ENOMEM; 4572 } 4573 memset(mcmd, 0, sizeof(*mcmd)); 4574 4575 mcmd->sess = sess; 4576 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4577 sizeof(mcmd->orig_iocb.imm_ntfy)); 4578 4579 unpacked_lun = 4580 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4581 mcmd->reset_count = ha->base_qpair->chip_reset; 4582 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4583 mcmd->qpair = ha->base_qpair; 4584 4585 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4586 le16_to_cpu(iocb->u.isp2x.seq_id)); 4587 if (rc != 0) { 4588 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4589 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4590 vha->vp_idx, rc); 4591 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4592 return -EFAULT; 4593 } 4594 4595 return 0; 4596 } 4597 4598 /* ha->hardware_lock supposed to be held on entry */ 4599 static int qlt_abort_task(struct scsi_qla_host *vha, 4600 struct imm_ntfy_from_isp *iocb) 4601 { 4602 struct qla_hw_data *ha = vha->hw; 4603 struct fc_port *sess; 4604 int loop_id; 4605 unsigned long flags; 4606 4607 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4608 4609 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4610 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4611 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4612 4613 if (sess == NULL) { 4614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4615 "qla_target(%d): task abort for unexisting " 4616 "session\n", vha->vp_idx); 4617 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4618 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4619 } 4620 4621 return __qlt_abort_task(vha, iocb, sess); 4622 } 4623 4624 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4625 { 4626 if (rc != MBS_COMMAND_COMPLETE) { 4627 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4628 "%s: se_sess %p / sess %p from" 4629 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4630 " LOGO failed: %#x\n", 4631 __func__, 4632 fcport->se_sess, 4633 fcport, 4634 fcport->port_name, fcport->loop_id, 4635 fcport->d_id.b.domain, fcport->d_id.b.area, 4636 fcport->d_id.b.al_pa, rc); 4637 } 4638 4639 fcport->logout_completed = 1; 4640 } 4641 4642 /* 4643 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4644 * 4645 * Schedules sessions with matching port_id/loop_id but different wwn for 4646 * deletion. Returns existing session with matching wwn if present. 4647 * Null otherwise. 4648 */ 4649 struct fc_port * 4650 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4651 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4652 { 4653 struct fc_port *sess = NULL, *other_sess; 4654 uint64_t other_wwn; 4655 4656 *conflict_sess = NULL; 4657 4658 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4659 4660 other_wwn = wwn_to_u64(other_sess->port_name); 4661 4662 if (wwn == other_wwn) { 4663 WARN_ON(sess); 4664 sess = other_sess; 4665 continue; 4666 } 4667 4668 /* find other sess with nport_id collision */ 4669 if (port_id.b24 == other_sess->d_id.b24) { 4670 if (loop_id != other_sess->loop_id) { 4671 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4672 "Invalidating sess %p loop_id %d wwn %llx.\n", 4673 other_sess, other_sess->loop_id, other_wwn); 4674 4675 /* 4676 * logout_on_delete is set by default, but another 4677 * session that has the same s_id/loop_id combo 4678 * might have cleared it when requested this session 4679 * deletion, so don't touch it 4680 */ 4681 qlt_schedule_sess_for_deletion(other_sess); 4682 } else { 4683 /* 4684 * Another wwn used to have our s_id/loop_id 4685 * kill the session, but don't free the loop_id 4686 */ 4687 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4688 "Invalidating sess %p loop_id %d wwn %llx.\n", 4689 other_sess, other_sess->loop_id, other_wwn); 4690 4691 other_sess->keep_nport_handle = 1; 4692 if (other_sess->disc_state != DSC_DELETED) 4693 *conflict_sess = other_sess; 4694 qlt_schedule_sess_for_deletion(other_sess); 4695 } 4696 continue; 4697 } 4698 4699 /* find other sess with nport handle collision */ 4700 if ((loop_id == other_sess->loop_id) && 4701 (loop_id != FC_NO_LOOP_ID)) { 4702 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4703 "Invalidating sess %p loop_id %d wwn %llx.\n", 4704 other_sess, other_sess->loop_id, other_wwn); 4705 4706 /* Same loop_id but different s_id 4707 * Ok to kill and logout */ 4708 qlt_schedule_sess_for_deletion(other_sess); 4709 } 4710 } 4711 4712 return sess; 4713 } 4714 4715 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4716 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4717 { 4718 struct qla_tgt_sess_op *op; 4719 struct qla_tgt_cmd *cmd; 4720 uint32_t key; 4721 int count = 0; 4722 unsigned long flags; 4723 4724 key = (((u32)s_id->b.domain << 16) | 4725 ((u32)s_id->b.area << 8) | 4726 ((u32)s_id->b.al_pa)); 4727 4728 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4729 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4730 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4731 4732 if (op_key == key) { 4733 op->aborted = true; 4734 count++; 4735 } 4736 } 4737 4738 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4739 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4740 4741 if (op_key == key) { 4742 op->aborted = true; 4743 count++; 4744 } 4745 } 4746 4747 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4748 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4749 4750 if (cmd_key == key) { 4751 cmd->aborted = 1; 4752 count++; 4753 } 4754 } 4755 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4756 4757 return count; 4758 } 4759 4760 static int qlt_handle_login(struct scsi_qla_host *vha, 4761 struct imm_ntfy_from_isp *iocb) 4762 { 4763 struct fc_port *sess = NULL, *conflict_sess = NULL; 4764 uint64_t wwn; 4765 port_id_t port_id; 4766 uint16_t loop_id, wd3_lo; 4767 int res = 0; 4768 struct qlt_plogi_ack_t *pla; 4769 unsigned long flags; 4770 4771 lockdep_assert_held(&vha->hw->hardware_lock); 4772 4773 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4774 4775 port_id.b.domain = iocb->u.isp24.port_id[2]; 4776 port_id.b.area = iocb->u.isp24.port_id[1]; 4777 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4778 port_id.b.rsvd_1 = 0; 4779 4780 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4781 4782 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4783 abort_cmds_for_s_id(vha, &port_id); 4784 4785 if (wwn) { 4786 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4787 sess = qlt_find_sess_invalidate_other(vha, wwn, 4788 port_id, loop_id, &conflict_sess); 4789 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4790 } else { 4791 ql_dbg(ql_dbg_disc, vha, 0xffff, 4792 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4793 __func__, __LINE__, loop_id, port_id.b24); 4794 qlt_send_term_imm_notif(vha, iocb, 1); 4795 goto out; 4796 } 4797 4798 if (IS_SW_RESV_ADDR(port_id)) { 4799 res = 1; 4800 goto out; 4801 } 4802 4803 if (vha->hw->flags.edif_enabled && 4804 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 4805 iocb->u.isp24.status_subcode == ELS_PLOGI && 4806 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4807 ql_dbg(ql_dbg_disc, vha, 0xffff, 4808 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 4809 __func__, __LINE__, loop_id, port_id.b24); 4810 qlt_send_term_imm_notif(vha, iocb, 1); 4811 goto out; 4812 } 4813 4814 if (vha->hw->flags.edif_enabled) { 4815 if (DBELL_INACTIVE(vha)) { 4816 ql_dbg(ql_dbg_disc, vha, 0xffff, 4817 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 4818 __func__, __LINE__, loop_id, port_id.b24); 4819 qlt_send_term_imm_notif(vha, iocb, 1); 4820 goto out; 4821 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 4822 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 4823 ql_dbg(ql_dbg_disc, vha, 0xffff, 4824 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 4825 __func__, __LINE__, loop_id, port_id.b24); 4826 qlt_send_term_imm_notif(vha, iocb, 1); 4827 goto out; 4828 } 4829 } 4830 4831 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4832 if (!pla) { 4833 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4834 "%s %d %8phC Term INOT due to mem alloc fail", 4835 __func__, __LINE__, 4836 iocb->u.isp24.port_name); 4837 qlt_send_term_imm_notif(vha, iocb, 1); 4838 goto out; 4839 } 4840 4841 if (conflict_sess) { 4842 conflict_sess->login_gen++; 4843 qlt_plogi_ack_link(vha, pla, conflict_sess, 4844 QLT_PLOGI_LINK_CONFLICT); 4845 } 4846 4847 if (!sess) { 4848 pla->ref_count++; 4849 ql_dbg(ql_dbg_disc, vha, 0xffff, 4850 "%s %d %8phC post new sess\n", 4851 __func__, __LINE__, iocb->u.isp24.port_name); 4852 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4853 qla24xx_post_newsess_work(vha, &port_id, 4854 iocb->u.isp24.port_name, 4855 iocb->u.isp24.u.plogi.node_name, 4856 pla, 0); 4857 else 4858 qla24xx_post_newsess_work(vha, &port_id, 4859 iocb->u.isp24.port_name, NULL, 4860 pla, 0); 4861 4862 goto out; 4863 } 4864 4865 if (sess->disc_state == DSC_UPD_FCPORT) { 4866 u16 sec; 4867 4868 /* 4869 * Remote port registration is still going on from 4870 * previous login. Allow it to finish before we 4871 * accept the new login. 4872 */ 4873 sess->next_disc_state = DSC_DELETE_PEND; 4874 sec = jiffies_to_msecs(jiffies - 4875 sess->jiffies_at_registration) / 1000; 4876 if (sess->sec_since_registration < sec && sec && 4877 !(sec % 5)) { 4878 sess->sec_since_registration = sec; 4879 ql_dbg(ql_dbg_disc, vha, 0xffff, 4880 "%s %8phC - Slow Rport registration (%d Sec)\n", 4881 __func__, sess->port_name, sec); 4882 } 4883 4884 if (!conflict_sess) { 4885 list_del(&pla->list); 4886 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4887 } 4888 4889 qlt_send_term_imm_notif(vha, iocb, 1); 4890 goto out; 4891 } 4892 4893 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4894 sess->d_id = port_id; 4895 sess->login_gen++; 4896 sess->loop_id = loop_id; 4897 4898 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 4899 /* remote port has assigned Port ID */ 4900 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 4901 vha->d_id = sess->d_id; 4902 4903 ql_dbg(ql_dbg_disc, vha, 0xffff, 4904 "%s %8phC - send port online\n", 4905 __func__, sess->port_name); 4906 4907 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 4908 sess->d_id.b24); 4909 } 4910 4911 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4912 sess->fw_login_state = DSC_LS_PRLI_PEND; 4913 sess->local = 0; 4914 sess->loop_id = loop_id; 4915 sess->d_id = port_id; 4916 sess->fw_login_state = DSC_LS_PRLI_PEND; 4917 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4918 4919 if (wd3_lo & BIT_7) 4920 sess->conf_compl_supported = 1; 4921 4922 if ((wd3_lo & BIT_4) == 0) 4923 sess->port_type = FCT_INITIATOR; 4924 else 4925 sess->port_type = FCT_TARGET; 4926 4927 } else 4928 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4929 4930 4931 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4932 "%s %d %8phC DS %d\n", 4933 __func__, __LINE__, sess->port_name, sess->disc_state); 4934 4935 switch (sess->disc_state) { 4936 case DSC_DELETED: 4937 case DSC_LOGIN_PEND: 4938 qlt_plogi_ack_unref(vha, pla); 4939 break; 4940 4941 default: 4942 /* 4943 * Under normal circumstances we want to release nport handle 4944 * during LOGO process to avoid nport handle leaks inside FW. 4945 * The exception is when LOGO is done while another PLOGI with 4946 * the same nport handle is waiting as might be the case here. 4947 * Note: there is always a possibily of a race where session 4948 * deletion has already started for other reasons (e.g. ACL 4949 * removal) and now PLOGI arrives: 4950 * 1. if PLOGI arrived in FW after nport handle has been freed, 4951 * FW must have assigned this PLOGI a new/same handle and we 4952 * can proceed ACK'ing it as usual when session deletion 4953 * completes. 4954 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4955 * bit reached it, the handle has now been released. We'll 4956 * get an error when we ACK this PLOGI. Nothing will be sent 4957 * back to initiator. Initiator should eventually retry 4958 * PLOGI and situation will correct itself. 4959 */ 4960 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4961 (sess->d_id.b24 == port_id.b24)); 4962 4963 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4964 "%s %d %8phC post del sess\n", 4965 __func__, __LINE__, sess->port_name); 4966 4967 4968 qlt_schedule_sess_for_deletion(sess); 4969 break; 4970 } 4971 out: 4972 return res; 4973 } 4974 4975 /* 4976 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4977 */ 4978 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4979 struct imm_ntfy_from_isp *iocb) 4980 { 4981 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4982 struct qla_hw_data *ha = vha->hw; 4983 struct fc_port *sess = NULL, *conflict_sess = NULL; 4984 uint64_t wwn; 4985 port_id_t port_id; 4986 uint16_t loop_id; 4987 uint16_t wd3_lo; 4988 int res = 0; 4989 unsigned long flags; 4990 4991 lockdep_assert_held(&ha->hardware_lock); 4992 4993 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4994 4995 port_id.b.domain = iocb->u.isp24.port_id[2]; 4996 port_id.b.area = iocb->u.isp24.port_id[1]; 4997 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4998 port_id.b.rsvd_1 = 0; 4999 5000 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 5001 5002 ql_dbg(ql_dbg_disc, vha, 0xf026, 5003 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 5004 vha->vp_idx, iocb->u.isp24.port_id[2], 5005 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 5006 iocb->u.isp24.status_subcode, loop_id, 5007 iocb->u.isp24.port_name); 5008 5009 /* res = 1 means ack at the end of thread 5010 * res = 0 means ack async/later. 5011 */ 5012 switch (iocb->u.isp24.status_subcode) { 5013 case ELS_PLOGI: 5014 res = qlt_handle_login(vha, iocb); 5015 break; 5016 5017 case ELS_PRLI: 5018 if (N2N_TOPO(ha)) { 5019 sess = qla2x00_find_fcport_by_wwpn(vha, 5020 iocb->u.isp24.port_name, 1); 5021 5022 if (vha->hw->flags.edif_enabled && sess && 5023 (!(sess->flags & FCF_FCSP_DEVICE) || 5024 !sess->edif.authok)) { 5025 ql_dbg(ql_dbg_disc, vha, 0xffff, 5026 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 5027 __func__, __LINE__, iocb->u.isp24.port_name); 5028 qlt_send_term_imm_notif(vha, iocb, 1); 5029 break; 5030 } 5031 5032 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5033 ql_dbg(ql_dbg_disc, vha, 0xffff, 5034 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5035 __func__, __LINE__, 5036 iocb->u.isp24.port_name); 5037 qlt_send_term_imm_notif(vha, iocb, 1); 5038 break; 5039 } 5040 5041 res = qlt_handle_login(vha, iocb); 5042 break; 5043 } 5044 5045 if (IS_SW_RESV_ADDR(port_id)) { 5046 res = 1; 5047 break; 5048 } 5049 5050 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5051 5052 if (wwn) { 5053 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5054 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5055 loop_id, &conflict_sess); 5056 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5057 } 5058 5059 if (conflict_sess) { 5060 switch (conflict_sess->disc_state) { 5061 case DSC_DELETED: 5062 case DSC_DELETE_PEND: 5063 break; 5064 default: 5065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5066 "PRLI with conflicting sess %p port %8phC\n", 5067 conflict_sess, conflict_sess->port_name); 5068 conflict_sess->fw_login_state = 5069 DSC_LS_PORT_UNAVAIL; 5070 qlt_send_term_imm_notif(vha, iocb, 1); 5071 res = 0; 5072 break; 5073 } 5074 } 5075 5076 if (sess != NULL) { 5077 bool delete = false; 5078 int sec; 5079 5080 if (vha->hw->flags.edif_enabled && sess && 5081 (!(sess->flags & FCF_FCSP_DEVICE) || 5082 !sess->edif.authok)) { 5083 ql_dbg(ql_dbg_disc, vha, 0xffff, 5084 "%s %d %8phC Term PRLI due to unauthorize prli\n", 5085 __func__, __LINE__, iocb->u.isp24.port_name); 5086 qlt_send_term_imm_notif(vha, iocb, 1); 5087 break; 5088 } 5089 5090 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5091 switch (sess->fw_login_state) { 5092 case DSC_LS_PLOGI_PEND: 5093 case DSC_LS_PLOGI_COMP: 5094 case DSC_LS_PRLI_COMP: 5095 break; 5096 default: 5097 delete = true; 5098 break; 5099 } 5100 5101 switch (sess->disc_state) { 5102 case DSC_UPD_FCPORT: 5103 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5104 flags); 5105 5106 sec = jiffies_to_msecs(jiffies - 5107 sess->jiffies_at_registration)/1000; 5108 if (sess->sec_since_registration < sec && sec && 5109 !(sec % 5)) { 5110 sess->sec_since_registration = sec; 5111 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5112 "%s %8phC : Slow Rport registration(%d Sec)\n", 5113 __func__, sess->port_name, sec); 5114 } 5115 qlt_send_term_imm_notif(vha, iocb, 1); 5116 return 0; 5117 5118 case DSC_LOGIN_PEND: 5119 case DSC_GPDB: 5120 case DSC_LOGIN_COMPLETE: 5121 case DSC_ADISC: 5122 delete = false; 5123 break; 5124 default: 5125 break; 5126 } 5127 5128 if (delete) { 5129 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5130 flags); 5131 /* 5132 * Impatient initiator sent PRLI before last 5133 * PLOGI could finish. Will force him to re-try, 5134 * while last one finishes. 5135 */ 5136 ql_log(ql_log_warn, sess->vha, 0xf095, 5137 "sess %p PRLI received, before plogi ack.\n", 5138 sess); 5139 qlt_send_term_imm_notif(vha, iocb, 1); 5140 res = 0; 5141 break; 5142 } 5143 5144 /* 5145 * This shouldn't happen under normal circumstances, 5146 * since we have deleted the old session during PLOGI 5147 */ 5148 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5149 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5150 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5151 5152 sess->local = 0; 5153 sess->loop_id = loop_id; 5154 sess->d_id = port_id; 5155 sess->fw_login_state = DSC_LS_PRLI_PEND; 5156 5157 if (wd3_lo & BIT_7) 5158 sess->conf_compl_supported = 1; 5159 5160 if ((wd3_lo & BIT_4) == 0) 5161 sess->port_type = FCT_INITIATOR; 5162 else 5163 sess->port_type = FCT_TARGET; 5164 5165 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5166 } 5167 res = 1; /* send notify ack */ 5168 5169 /* Make session global (not used in fabric mode) */ 5170 if (ha->current_topology != ISP_CFG_F) { 5171 if (sess) { 5172 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5173 "%s %d %8phC post nack\n", 5174 __func__, __LINE__, sess->port_name); 5175 qla24xx_post_nack_work(vha, sess, iocb, 5176 SRB_NACK_PRLI); 5177 res = 0; 5178 } else { 5179 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5180 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5181 qla2xxx_wake_dpc(vha); 5182 } 5183 } else { 5184 if (sess) { 5185 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5186 "%s %d %8phC post nack\n", 5187 __func__, __LINE__, sess->port_name); 5188 qla24xx_post_nack_work(vha, sess, iocb, 5189 SRB_NACK_PRLI); 5190 res = 0; 5191 } 5192 } 5193 break; 5194 5195 case ELS_TPRLO: 5196 if (le16_to_cpu(iocb->u.isp24.flags) & 5197 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5198 loop_id = 0xFFFF; 5199 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5200 res = 1; 5201 break; 5202 } 5203 fallthrough; 5204 case ELS_LOGO: 5205 case ELS_PRLO: 5206 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5207 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5208 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5209 5210 if (sess) { 5211 sess->login_gen++; 5212 sess->fw_login_state = DSC_LS_LOGO_PEND; 5213 sess->logo_ack_needed = 1; 5214 memcpy(sess->iocb, iocb, IOCB_SIZE); 5215 } 5216 5217 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5218 5219 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5220 "%s: logo %llx res %d sess %p ", 5221 __func__, wwn, res, sess); 5222 if (res == 0) { 5223 /* 5224 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5225 * for LOGO_ACK & sess delete 5226 */ 5227 BUG_ON(!sess); 5228 res = 0; 5229 } else { 5230 /* cmd did not go to upper layer. */ 5231 if (sess) { 5232 qlt_schedule_sess_for_deletion(sess); 5233 res = 0; 5234 } 5235 /* else logo will be ack */ 5236 } 5237 break; 5238 case ELS_PDISC: 5239 case ELS_ADISC: 5240 { 5241 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5242 5243 if (tgt->link_reinit_iocb_pending) { 5244 qlt_send_notify_ack(ha->base_qpair, 5245 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5246 tgt->link_reinit_iocb_pending = 0; 5247 } 5248 5249 sess = qla2x00_find_fcport_by_wwpn(vha, 5250 iocb->u.isp24.port_name, 1); 5251 if (sess) { 5252 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5253 "sess %p lid %d|%d DS %d LS %d\n", 5254 sess, sess->loop_id, loop_id, 5255 sess->disc_state, sess->fw_login_state); 5256 } 5257 5258 res = 1; /* send notify ack */ 5259 break; 5260 } 5261 5262 case ELS_FLOGI: /* should never happen */ 5263 default: 5264 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5265 "qla_target(%d): Unsupported ELS command %x " 5266 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5267 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5268 break; 5269 } 5270 5271 ql_dbg(ql_dbg_disc, vha, 0xf026, 5272 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5273 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5274 5275 return res; 5276 } 5277 5278 /* 5279 * ha->hardware_lock supposed to be held on entry. 5280 * Might drop it, then reacquire. 5281 */ 5282 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5283 struct imm_ntfy_from_isp *iocb) 5284 { 5285 struct qla_hw_data *ha = vha->hw; 5286 uint32_t add_flags = 0; 5287 int send_notify_ack = 1; 5288 uint16_t status; 5289 5290 lockdep_assert_held(&ha->hardware_lock); 5291 5292 status = le16_to_cpu(iocb->u.isp2x.status); 5293 switch (status) { 5294 case IMM_NTFY_LIP_RESET: 5295 { 5296 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5297 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5298 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5299 iocb->u.isp24.status_subcode); 5300 5301 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5302 send_notify_ack = 0; 5303 break; 5304 } 5305 5306 case IMM_NTFY_LIP_LINK_REINIT: 5307 { 5308 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5309 5310 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5311 "qla_target(%d): LINK REINIT (loop %#x, " 5312 "subcode %x)\n", vha->vp_idx, 5313 le16_to_cpu(iocb->u.isp24.nport_handle), 5314 iocb->u.isp24.status_subcode); 5315 if (tgt->link_reinit_iocb_pending) { 5316 qlt_send_notify_ack(ha->base_qpair, 5317 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5318 } 5319 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5320 tgt->link_reinit_iocb_pending = 1; 5321 /* 5322 * QLogic requires to wait after LINK REINIT for possible 5323 * PDISC or ADISC ELS commands 5324 */ 5325 send_notify_ack = 0; 5326 break; 5327 } 5328 5329 case IMM_NTFY_PORT_LOGOUT: 5330 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5331 "qla_target(%d): Port logout (loop " 5332 "%#x, subcode %x)\n", vha->vp_idx, 5333 le16_to_cpu(iocb->u.isp24.nport_handle), 5334 iocb->u.isp24.status_subcode); 5335 5336 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5337 send_notify_ack = 0; 5338 /* The sessions will be cleared in the callback, if needed */ 5339 break; 5340 5341 case IMM_NTFY_GLBL_TPRLO: 5342 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5343 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5344 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5345 send_notify_ack = 0; 5346 /* The sessions will be cleared in the callback, if needed */ 5347 break; 5348 5349 case IMM_NTFY_PORT_CONFIG: 5350 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5351 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5352 status); 5353 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5354 send_notify_ack = 0; 5355 /* The sessions will be cleared in the callback, if needed */ 5356 break; 5357 5358 case IMM_NTFY_GLBL_LOGO: 5359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5360 "qla_target(%d): Link failure detected\n", 5361 vha->vp_idx); 5362 /* I_T nexus loss */ 5363 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5364 send_notify_ack = 0; 5365 break; 5366 5367 case IMM_NTFY_IOCB_OVERFLOW: 5368 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5369 "qla_target(%d): Cannot provide requested " 5370 "capability (IOCB overflowed the immediate notify " 5371 "resource count)\n", vha->vp_idx); 5372 break; 5373 5374 case IMM_NTFY_ABORT_TASK: 5375 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5376 "qla_target(%d): Abort Task (S %08x I %#x -> " 5377 "L %#x)\n", vha->vp_idx, 5378 le16_to_cpu(iocb->u.isp2x.seq_id), 5379 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5380 le16_to_cpu(iocb->u.isp2x.lun)); 5381 if (qlt_abort_task(vha, iocb) == 0) 5382 send_notify_ack = 0; 5383 break; 5384 5385 case IMM_NTFY_RESOURCE: 5386 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5387 "qla_target(%d): Out of resources, host %ld\n", 5388 vha->vp_idx, vha->host_no); 5389 break; 5390 5391 case IMM_NTFY_MSG_RX: 5392 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5393 "qla_target(%d): Immediate notify task %x\n", 5394 vha->vp_idx, iocb->u.isp2x.task_flags); 5395 break; 5396 5397 case IMM_NTFY_ELS: 5398 if (qlt_24xx_handle_els(vha, iocb) == 0) 5399 send_notify_ack = 0; 5400 break; 5401 default: 5402 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5403 "qla_target(%d): Received unknown immediate " 5404 "notify status %x\n", vha->vp_idx, status); 5405 break; 5406 } 5407 5408 if (send_notify_ack) 5409 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5410 0, 0); 5411 } 5412 5413 /* 5414 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5415 * This function sends busy to ISP 2xxx or 24xx. 5416 */ 5417 static int __qlt_send_busy(struct qla_qpair *qpair, 5418 struct atio_from_isp *atio, uint16_t status) 5419 { 5420 struct scsi_qla_host *vha = qpair->vha; 5421 struct ctio7_to_24xx *ctio24; 5422 struct qla_hw_data *ha = vha->hw; 5423 request_t *pkt; 5424 struct fc_port *sess = NULL; 5425 unsigned long flags; 5426 u16 temp; 5427 port_id_t id; 5428 5429 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 5430 5431 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5432 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5433 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5434 if (!sess) { 5435 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5436 return 0; 5437 } 5438 /* Sending marker isn't necessary, since we called from ISR */ 5439 5440 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5441 if (!pkt) { 5442 ql_dbg(ql_dbg_io, vha, 0x3063, 5443 "qla_target(%d): %s failed: unable to allocate " 5444 "request packet", vha->vp_idx, __func__); 5445 return -ENOMEM; 5446 } 5447 5448 qpair->tgt_counters.num_q_full_sent++; 5449 pkt->entry_count = 1; 5450 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5451 5452 ctio24 = (struct ctio7_to_24xx *)pkt; 5453 ctio24->entry_type = CTIO_TYPE7; 5454 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 5455 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5456 ctio24->vp_index = vha->vp_idx; 5457 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 5458 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5459 temp = (atio->u.isp24.attr << 9) | 5460 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5461 CTIO7_FLAGS_DONT_RET_CTIO; 5462 ctio24->u.status1.flags = cpu_to_le16(temp); 5463 /* 5464 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5465 * if the explicit conformation is used. 5466 */ 5467 ctio24->u.status1.ox_id = 5468 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 5469 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5470 5471 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 5472 5473 if (ctio24->u.status1.residual != 0) 5474 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 5475 5476 /* Memory Barrier */ 5477 wmb(); 5478 if (qpair->reqq_start_iocbs) 5479 qpair->reqq_start_iocbs(qpair); 5480 else 5481 qla2x00_start_iocbs(vha, qpair->req); 5482 return 0; 5483 } 5484 5485 /* 5486 * This routine is used to allocate a command for either a QFull condition 5487 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5488 * out previously. 5489 */ 5490 static void 5491 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5492 struct atio_from_isp *atio, uint16_t status, int qfull) 5493 { 5494 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5495 struct qla_hw_data *ha = vha->hw; 5496 struct fc_port *sess; 5497 struct qla_tgt_cmd *cmd; 5498 unsigned long flags; 5499 5500 if (unlikely(tgt->tgt_stop)) { 5501 ql_dbg(ql_dbg_io, vha, 0x300a, 5502 "New command while device %p is shutting down\n", tgt); 5503 return; 5504 } 5505 5506 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5507 vha->hw->tgt.num_qfull_cmds_dropped++; 5508 if (vha->hw->tgt.num_qfull_cmds_dropped > 5509 vha->qla_stats.stat_max_qfull_cmds_dropped) 5510 vha->qla_stats.stat_max_qfull_cmds_dropped = 5511 vha->hw->tgt.num_qfull_cmds_dropped; 5512 5513 ql_dbg(ql_dbg_io, vha, 0x3068, 5514 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5515 vha->vp_idx, __func__, 5516 vha->hw->tgt.num_qfull_cmds_dropped); 5517 5518 qlt_chk_exch_leak_thresh_hold(vha); 5519 return; 5520 } 5521 5522 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5523 (vha, atio->u.isp24.fcp_hdr.s_id); 5524 if (!sess) 5525 return; 5526 5527 cmd = ha->tgt.tgt_ops->get_cmd(sess); 5528 if (!cmd) { 5529 ql_dbg(ql_dbg_io, vha, 0x3009, 5530 "qla_target(%d): %s: Allocation of cmd failed\n", 5531 vha->vp_idx, __func__); 5532 5533 vha->hw->tgt.num_qfull_cmds_dropped++; 5534 if (vha->hw->tgt.num_qfull_cmds_dropped > 5535 vha->qla_stats.stat_max_qfull_cmds_dropped) 5536 vha->qla_stats.stat_max_qfull_cmds_dropped = 5537 vha->hw->tgt.num_qfull_cmds_dropped; 5538 5539 qlt_chk_exch_leak_thresh_hold(vha); 5540 return; 5541 } 5542 5543 qlt_incr_num_pend_cmds(vha); 5544 INIT_LIST_HEAD(&cmd->cmd_list); 5545 memcpy(&cmd->atio, atio, sizeof(*atio)); 5546 5547 cmd->tgt = vha->vha_tgt.qla_tgt; 5548 cmd->vha = vha; 5549 cmd->reset_count = ha->base_qpair->chip_reset; 5550 cmd->q_full = 1; 5551 cmd->qpair = ha->base_qpair; 5552 5553 if (qfull) { 5554 cmd->q_full = 1; 5555 /* NOTE: borrowing the state field to carry the status */ 5556 cmd->state = status; 5557 } else 5558 cmd->term_exchg = 1; 5559 5560 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5561 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5562 5563 vha->hw->tgt.num_qfull_cmds_alloc++; 5564 if (vha->hw->tgt.num_qfull_cmds_alloc > 5565 vha->qla_stats.stat_max_qfull_cmds_alloc) 5566 vha->qla_stats.stat_max_qfull_cmds_alloc = 5567 vha->hw->tgt.num_qfull_cmds_alloc; 5568 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5569 } 5570 5571 int 5572 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5573 { 5574 struct scsi_qla_host *vha = qpair->vha; 5575 struct qla_hw_data *ha = vha->hw; 5576 unsigned long flags; 5577 struct qla_tgt_cmd *cmd, *tcmd; 5578 struct list_head free_list, q_full_list; 5579 int rc = 0; 5580 5581 if (list_empty(&ha->tgt.q_full_list)) 5582 return 0; 5583 5584 INIT_LIST_HEAD(&free_list); 5585 INIT_LIST_HEAD(&q_full_list); 5586 5587 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5588 if (list_empty(&ha->tgt.q_full_list)) { 5589 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5590 return 0; 5591 } 5592 5593 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5594 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5595 5596 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5597 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5598 if (cmd->q_full) 5599 /* cmd->state is a borrowed field to hold status */ 5600 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5601 else if (cmd->term_exchg) 5602 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5603 5604 if (rc == -ENOMEM) 5605 break; 5606 5607 if (cmd->q_full) 5608 ql_dbg(ql_dbg_io, vha, 0x3006, 5609 "%s: busy sent for ox_id[%04x]\n", __func__, 5610 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5611 else if (cmd->term_exchg) 5612 ql_dbg(ql_dbg_io, vha, 0x3007, 5613 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5614 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5615 else 5616 ql_dbg(ql_dbg_io, vha, 0x3008, 5617 "%s: Unexpected cmd in QFull list %p\n", __func__, 5618 cmd); 5619 5620 list_move_tail(&cmd->cmd_list, &free_list); 5621 5622 /* piggy back on hardware_lock for protection */ 5623 vha->hw->tgt.num_qfull_cmds_alloc--; 5624 } 5625 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5626 5627 cmd = NULL; 5628 5629 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5630 list_del(&cmd->cmd_list); 5631 /* This cmd was never sent to TCM. There is no need 5632 * to schedule free or call free_cmd 5633 */ 5634 qlt_free_cmd(cmd); 5635 } 5636 5637 if (!list_empty(&q_full_list)) { 5638 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5639 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5640 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5641 } 5642 5643 return rc; 5644 } 5645 5646 static void 5647 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5648 uint16_t status) 5649 { 5650 int rc = 0; 5651 struct scsi_qla_host *vha = qpair->vha; 5652 5653 rc = __qlt_send_busy(qpair, atio, status); 5654 if (rc == -ENOMEM) 5655 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5656 } 5657 5658 static int 5659 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5660 struct atio_from_isp *atio, uint8_t ha_locked) 5661 { 5662 struct qla_hw_data *ha = vha->hw; 5663 unsigned long flags; 5664 5665 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5666 return 0; 5667 5668 if (!ha_locked) 5669 spin_lock_irqsave(&ha->hardware_lock, flags); 5670 qlt_send_busy(qpair, atio, qla_sam_status); 5671 if (!ha_locked) 5672 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5673 5674 return 1; 5675 } 5676 5677 /* ha->hardware_lock supposed to be held on entry */ 5678 /* called via callback from qla2xxx */ 5679 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5680 struct atio_from_isp *atio, uint8_t ha_locked) 5681 { 5682 struct qla_hw_data *ha = vha->hw; 5683 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5684 int rc; 5685 unsigned long flags = 0; 5686 5687 if (unlikely(tgt == NULL)) { 5688 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5689 "ATIO pkt, but no tgt (ha %p)", ha); 5690 return; 5691 } 5692 /* 5693 * In tgt_stop mode we also should allow all requests to pass. 5694 * Otherwise, some commands can stuck. 5695 */ 5696 5697 tgt->atio_irq_cmd_count++; 5698 5699 switch (atio->u.raw.entry_type) { 5700 case ATIO_TYPE7: 5701 if (unlikely(atio->u.isp24.exchange_addr == 5702 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 5703 ql_dbg(ql_dbg_io, vha, 0x3065, 5704 "qla_target(%d): ATIO_TYPE7 " 5705 "received with UNKNOWN exchange address, " 5706 "sending QUEUE_FULL\n", vha->vp_idx); 5707 if (!ha_locked) 5708 spin_lock_irqsave(&ha->hardware_lock, flags); 5709 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5710 if (!ha_locked) 5711 spin_unlock_irqrestore(&ha->hardware_lock, 5712 flags); 5713 break; 5714 } 5715 5716 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5717 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5718 atio, ha_locked); 5719 if (rc != 0) { 5720 tgt->atio_irq_cmd_count--; 5721 return; 5722 } 5723 rc = qlt_handle_cmd_for_atio(vha, atio); 5724 } else { 5725 rc = qlt_handle_task_mgmt(vha, atio); 5726 } 5727 if (unlikely(rc != 0)) { 5728 if (!ha_locked) 5729 spin_lock_irqsave(&ha->hardware_lock, flags); 5730 switch (rc) { 5731 case -ENODEV: 5732 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5733 "qla_target: Unable to send command to target\n"); 5734 break; 5735 case -EBADF: 5736 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5737 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5738 qlt_send_term_exchange(ha->base_qpair, NULL, 5739 atio, 1, 0); 5740 break; 5741 case -EBUSY: 5742 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5743 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5744 vha->vp_idx); 5745 qlt_send_busy(ha->base_qpair, atio, 5746 tc_sam_status); 5747 break; 5748 default: 5749 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5750 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5751 vha->vp_idx); 5752 qlt_send_busy(ha->base_qpair, atio, 5753 qla_sam_status); 5754 break; 5755 } 5756 if (!ha_locked) 5757 spin_unlock_irqrestore(&ha->hardware_lock, 5758 flags); 5759 } 5760 break; 5761 5762 case IMMED_NOTIFY_TYPE: 5763 { 5764 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5765 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5766 "qla_target(%d): Received ATIO packet %x " 5767 "with error status %x\n", vha->vp_idx, 5768 atio->u.raw.entry_type, 5769 atio->u.isp2x.entry_status); 5770 break; 5771 } 5772 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5773 5774 if (!ha_locked) 5775 spin_lock_irqsave(&ha->hardware_lock, flags); 5776 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5777 if (!ha_locked) 5778 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5779 break; 5780 } 5781 5782 default: 5783 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5784 "qla_target(%d): Received unknown ATIO atio " 5785 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5786 break; 5787 } 5788 5789 tgt->atio_irq_cmd_count--; 5790 } 5791 5792 /* 5793 * qpair lock is assume to be held 5794 * rc = 0 : send terminate & abts respond 5795 * rc != 0: do not send term & abts respond 5796 */ 5797 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5798 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5799 { 5800 struct qla_hw_data *ha = vha->hw; 5801 int rc = 0; 5802 5803 /* 5804 * Detect unresolved exchange. If the same ABTS is unable 5805 * to terminate an existing command and the same ABTS loops 5806 * between FW & Driver, then force FW dump. Under 1 jiff, 5807 * we should see multiple loops. 5808 */ 5809 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5810 qpair->retry_term_jiff == jiffies) { 5811 /* found existing exchange */ 5812 qpair->retry_term_cnt++; 5813 if (qpair->retry_term_cnt >= 5) { 5814 rc = -EIO; 5815 qpair->retry_term_cnt = 0; 5816 ql_log(ql_log_warn, vha, 0xffff, 5817 "Unable to send ABTS Respond. Dumping firmware.\n"); 5818 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5819 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5820 5821 if (qpair == ha->base_qpair) 5822 ha->isp_ops->fw_dump(vha); 5823 else 5824 qla2xxx_dump_fw(vha); 5825 5826 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5827 qla2xxx_wake_dpc(vha); 5828 } 5829 } else if (qpair->retry_term_jiff != jiffies) { 5830 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5831 qpair->retry_term_cnt = 0; 5832 qpair->retry_term_jiff = jiffies; 5833 } 5834 5835 return rc; 5836 } 5837 5838 5839 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5840 struct rsp_que *rsp, response_t *pkt) 5841 { 5842 struct abts_resp_from_24xx_fw *entry = 5843 (struct abts_resp_from_24xx_fw *)pkt; 5844 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5845 struct qla_tgt_mgmt_cmd *mcmd; 5846 struct qla_hw_data *ha = vha->hw; 5847 5848 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); 5849 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5850 ql_dbg(ql_dbg_async, vha, 0xe064, 5851 "qla_target(%d): ABTS Comp without mcmd\n", 5852 vha->vp_idx); 5853 return; 5854 } 5855 5856 if (mcmd) 5857 vha = mcmd->vha; 5858 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5859 5860 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5861 "ABTS_RESP_24XX: compl_status %x\n", 5862 entry->compl_status); 5863 5864 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5865 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 5866 le32_to_cpu(entry->error_subcode2) == 0) { 5867 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5868 ha->tgt.tgt_ops->free_mcmd(mcmd); 5869 return; 5870 } 5871 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5872 pkt, mcmd); 5873 } else { 5874 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5875 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5876 vha->vp_idx, entry->compl_status, 5877 entry->error_subcode1, 5878 entry->error_subcode2); 5879 ha->tgt.tgt_ops->free_mcmd(mcmd); 5880 } 5881 } else if (mcmd) { 5882 ha->tgt.tgt_ops->free_mcmd(mcmd); 5883 } 5884 } 5885 5886 /* ha->hardware_lock supposed to be held on entry */ 5887 /* called via callback from qla2xxx */ 5888 static void qlt_response_pkt(struct scsi_qla_host *vha, 5889 struct rsp_que *rsp, response_t *pkt) 5890 { 5891 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5892 5893 if (unlikely(tgt == NULL)) { 5894 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5895 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5896 vha->vp_idx, pkt->entry_type, vha->hw); 5897 return; 5898 } 5899 5900 /* 5901 * In tgt_stop mode we also should allow all requests to pass. 5902 * Otherwise, some commands can stuck. 5903 */ 5904 5905 switch (pkt->entry_type) { 5906 case CTIO_CRC2: 5907 case CTIO_TYPE7: 5908 { 5909 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5910 5911 qlt_do_ctio_completion(vha, rsp, entry->handle, 5912 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5913 entry); 5914 break; 5915 } 5916 5917 case ACCEPT_TGT_IO_TYPE: 5918 { 5919 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5920 int rc; 5921 5922 if (atio->u.isp2x.status != 5923 cpu_to_le16(ATIO_CDB_VALID)) { 5924 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5925 "qla_target(%d): ATIO with error " 5926 "status %x received\n", vha->vp_idx, 5927 le16_to_cpu(atio->u.isp2x.status)); 5928 break; 5929 } 5930 5931 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5932 if (rc != 0) 5933 return; 5934 5935 rc = qlt_handle_cmd_for_atio(vha, atio); 5936 if (unlikely(rc != 0)) { 5937 switch (rc) { 5938 case -ENODEV: 5939 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5940 "qla_target: Unable to send command to target\n"); 5941 break; 5942 case -EBADF: 5943 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5944 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5945 qlt_send_term_exchange(rsp->qpair, NULL, 5946 atio, 1, 0); 5947 break; 5948 case -EBUSY: 5949 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5950 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5951 vha->vp_idx); 5952 qlt_send_busy(rsp->qpair, atio, 5953 tc_sam_status); 5954 break; 5955 default: 5956 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5957 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5958 vha->vp_idx); 5959 qlt_send_busy(rsp->qpair, atio, 5960 qla_sam_status); 5961 break; 5962 } 5963 } 5964 } 5965 break; 5966 5967 case CONTINUE_TGT_IO_TYPE: 5968 { 5969 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5970 5971 qlt_do_ctio_completion(vha, rsp, entry->handle, 5972 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5973 entry); 5974 break; 5975 } 5976 5977 case CTIO_A64_TYPE: 5978 { 5979 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5980 5981 qlt_do_ctio_completion(vha, rsp, entry->handle, 5982 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5983 entry); 5984 break; 5985 } 5986 5987 case IMMED_NOTIFY_TYPE: 5988 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5989 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5990 break; 5991 5992 case NOTIFY_ACK_TYPE: 5993 if (tgt->notify_ack_expected > 0) { 5994 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5995 5996 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5997 "NOTIFY_ACK seq %08x status %x\n", 5998 le16_to_cpu(entry->u.isp2x.seq_id), 5999 le16_to_cpu(entry->u.isp2x.status)); 6000 tgt->notify_ack_expected--; 6001 if (entry->u.isp2x.status != 6002 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 6003 ql_dbg(ql_dbg_tgt, vha, 0xe061, 6004 "qla_target(%d): NOTIFY_ACK " 6005 "failed %x\n", vha->vp_idx, 6006 le16_to_cpu(entry->u.isp2x.status)); 6007 } 6008 } else { 6009 ql_dbg(ql_dbg_tgt, vha, 0xe062, 6010 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 6011 vha->vp_idx); 6012 } 6013 break; 6014 6015 case ABTS_RECV_24XX: 6016 ql_dbg(ql_dbg_tgt, vha, 0xe037, 6017 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 6018 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 6019 break; 6020 6021 case ABTS_RESP_24XX: 6022 if (tgt->abts_resp_expected > 0) { 6023 qlt_handle_abts_completion(vha, rsp, pkt); 6024 } else { 6025 ql_dbg(ql_dbg_tgt, vha, 0xe064, 6026 "qla_target(%d): Unexpected ABTS_RESP_24XX " 6027 "received\n", vha->vp_idx); 6028 } 6029 break; 6030 6031 default: 6032 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6033 "qla_target(%d): Received unknown response pkt " 6034 "type %x\n", vha->vp_idx, pkt->entry_type); 6035 break; 6036 } 6037 6038 } 6039 6040 /* 6041 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6042 */ 6043 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6044 uint16_t *mailbox) 6045 { 6046 struct qla_hw_data *ha = vha->hw; 6047 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6048 int login_code; 6049 6050 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6051 return; 6052 6053 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6054 IS_QLA2100(ha)) 6055 return; 6056 /* 6057 * In tgt_stop mode we also should allow all requests to pass. 6058 * Otherwise, some commands can stuck. 6059 */ 6060 6061 6062 switch (code) { 6063 case MBA_RESET: /* Reset */ 6064 case MBA_SYSTEM_ERR: /* System Error */ 6065 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6066 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6067 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6068 "qla_target(%d): System error async event %#x " 6069 "occurred", vha->vp_idx, code); 6070 break; 6071 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6072 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6073 break; 6074 6075 case MBA_LOOP_UP: 6076 { 6077 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6078 "qla_target(%d): Async LOOP_UP occurred " 6079 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6080 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6081 if (tgt->link_reinit_iocb_pending) { 6082 qlt_send_notify_ack(ha->base_qpair, 6083 &tgt->link_reinit_iocb, 6084 0, 0, 0, 0, 0, 0); 6085 tgt->link_reinit_iocb_pending = 0; 6086 } 6087 break; 6088 } 6089 6090 case MBA_LIP_OCCURRED: 6091 case MBA_LOOP_DOWN: 6092 case MBA_LIP_RESET: 6093 case MBA_RSCN_UPDATE: 6094 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6095 "qla_target(%d): Async event %#x occurred " 6096 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6097 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6098 break; 6099 6100 case MBA_REJECTED_FCP_CMD: 6101 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6102 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6103 vha->vp_idx, 6104 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6105 6106 if (mailbox[3] == 1) { 6107 /* exchange starvation. */ 6108 vha->hw->exch_starvation++; 6109 if (vha->hw->exch_starvation > 5) { 6110 ql_log(ql_log_warn, vha, 0xd03a, 6111 "Exchange starvation-. Resetting RISC\n"); 6112 6113 vha->hw->exch_starvation = 0; 6114 if (IS_P3P_TYPE(vha->hw)) 6115 set_bit(FCOE_CTX_RESET_NEEDED, 6116 &vha->dpc_flags); 6117 else 6118 set_bit(ISP_ABORT_NEEDED, 6119 &vha->dpc_flags); 6120 qla2xxx_wake_dpc(vha); 6121 } 6122 } 6123 break; 6124 6125 case MBA_PORT_UPDATE: 6126 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6127 "qla_target(%d): Port update async event %#x " 6128 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6129 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6130 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 6131 6132 login_code = mailbox[2]; 6133 if (login_code == 0x4) { 6134 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6135 "Async MB 2: Got PLOGI Complete\n"); 6136 vha->hw->exch_starvation = 0; 6137 } else if (login_code == 0x7) 6138 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6139 "Async MB 2: Port Logged Out\n"); 6140 break; 6141 default: 6142 break; 6143 } 6144 6145 } 6146 6147 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6148 uint16_t loop_id) 6149 { 6150 fc_port_t *fcport, *tfcp, *del; 6151 int rc; 6152 unsigned long flags; 6153 u8 newfcport = 0; 6154 6155 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6156 if (!fcport) { 6157 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6158 "qla_target(%d): Allocation of tmp FC port failed", 6159 vha->vp_idx); 6160 return NULL; 6161 } 6162 6163 fcport->loop_id = loop_id; 6164 6165 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6166 if (rc != QLA_SUCCESS) { 6167 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6168 "qla_target(%d): Failed to retrieve fcport " 6169 "information -- get_port_database() returned %x " 6170 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6171 kfree(fcport); 6172 return NULL; 6173 } 6174 6175 del = NULL; 6176 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6177 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6178 6179 if (tfcp) { 6180 tfcp->d_id = fcport->d_id; 6181 tfcp->port_type = fcport->port_type; 6182 tfcp->supported_classes = fcport->supported_classes; 6183 tfcp->flags |= fcport->flags; 6184 tfcp->scan_state = QLA_FCPORT_FOUND; 6185 6186 del = fcport; 6187 fcport = tfcp; 6188 } else { 6189 if (vha->hw->current_topology == ISP_CFG_F) 6190 fcport->flags |= FCF_FABRIC_DEVICE; 6191 6192 list_add_tail(&fcport->list, &vha->vp_fcports); 6193 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6194 vha->fcport_count++; 6195 fcport->login_gen++; 6196 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 6197 fcport->login_succ = 1; 6198 newfcport = 1; 6199 } 6200 6201 fcport->deleted = 0; 6202 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6203 6204 switch (vha->host->active_mode) { 6205 case MODE_INITIATOR: 6206 case MODE_DUAL: 6207 if (newfcport) { 6208 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6209 qla24xx_sched_upd_fcport(fcport); 6210 } else { 6211 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6212 "%s %d %8phC post gpsc fcp_cnt %d\n", 6213 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6214 qla24xx_post_gpsc_work(vha, fcport); 6215 } 6216 } 6217 break; 6218 6219 case MODE_TARGET: 6220 default: 6221 break; 6222 } 6223 if (del) 6224 qla2x00_free_fcport(del); 6225 6226 return fcport; 6227 } 6228 6229 /* Must be called under tgt_mutex */ 6230 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6231 be_id_t s_id) 6232 { 6233 struct fc_port *sess = NULL; 6234 fc_port_t *fcport = NULL; 6235 int rc, global_resets; 6236 uint16_t loop_id = 0; 6237 6238 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 6239 /* 6240 * This is Domain Controller, so it should be 6241 * OK to drop SCSI commands from it. 6242 */ 6243 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6244 "Unable to find initiator with S_ID %x:%x:%x", 6245 s_id.domain, s_id.area, s_id.al_pa); 6246 return NULL; 6247 } 6248 6249 mutex_lock(&vha->vha_tgt.tgt_mutex); 6250 6251 retry: 6252 global_resets = 6253 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6254 6255 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6256 if (rc != 0) { 6257 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6258 6259 ql_log(ql_log_info, vha, 0xf071, 6260 "qla_target(%d): Unable to find " 6261 "initiator with S_ID %x:%x:%x", 6262 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 6263 6264 if (rc == -ENOENT) { 6265 qlt_port_logo_t logo; 6266 6267 logo.id = be_to_port_id(s_id); 6268 logo.cmd_count = 1; 6269 qlt_send_first_logo(vha, &logo); 6270 } 6271 6272 return NULL; 6273 } 6274 6275 fcport = qlt_get_port_database(vha, loop_id); 6276 if (!fcport) { 6277 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6278 return NULL; 6279 } 6280 6281 if (global_resets != 6282 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6283 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6284 "qla_target(%d): global reset during session discovery " 6285 "(counter was %d, new %d), retrying", vha->vp_idx, 6286 global_resets, 6287 atomic_read(&vha->vha_tgt. 6288 qla_tgt->tgt_global_resets_count)); 6289 goto retry; 6290 } 6291 6292 sess = qlt_create_sess(vha, fcport, true); 6293 6294 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6295 6296 return sess; 6297 } 6298 6299 static void qlt_abort_work(struct qla_tgt *tgt, 6300 struct qla_tgt_sess_work_param *prm) 6301 { 6302 struct scsi_qla_host *vha = tgt->vha; 6303 struct qla_hw_data *ha = vha->hw; 6304 struct fc_port *sess = NULL; 6305 unsigned long flags = 0, flags2 = 0; 6306 be_id_t s_id; 6307 int rc; 6308 6309 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6310 6311 if (tgt->tgt_stop) 6312 goto out_term2; 6313 6314 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 6315 6316 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6317 if (!sess) { 6318 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6319 6320 sess = qlt_make_local_sess(vha, s_id); 6321 /* sess has got an extra creation ref */ 6322 6323 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6324 if (!sess) 6325 goto out_term2; 6326 } else { 6327 if (sess->deleted) { 6328 sess = NULL; 6329 goto out_term2; 6330 } 6331 6332 if (!kref_get_unless_zero(&sess->sess_kref)) { 6333 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6334 "%s: kref_get fail %8phC \n", 6335 __func__, sess->port_name); 6336 sess = NULL; 6337 goto out_term2; 6338 } 6339 } 6340 6341 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6342 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6343 6344 ha->tgt.tgt_ops->put_sess(sess); 6345 6346 if (rc != 0) 6347 goto out_term; 6348 return; 6349 6350 out_term2: 6351 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6352 6353 out_term: 6354 spin_lock_irqsave(&ha->hardware_lock, flags); 6355 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6356 FCP_TMF_REJECTED, false); 6357 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6358 } 6359 6360 static void qlt_tmr_work(struct qla_tgt *tgt, 6361 struct qla_tgt_sess_work_param *prm) 6362 { 6363 struct atio_from_isp *a = &prm->tm_iocb2; 6364 struct scsi_qla_host *vha = tgt->vha; 6365 struct qla_hw_data *ha = vha->hw; 6366 struct fc_port *sess; 6367 unsigned long flags; 6368 be_id_t s_id; 6369 int rc; 6370 u64 unpacked_lun; 6371 int fn; 6372 void *iocb; 6373 6374 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6375 6376 if (tgt->tgt_stop) 6377 goto out_term2; 6378 6379 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6380 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6381 if (!sess) { 6382 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6383 6384 sess = qlt_make_local_sess(vha, s_id); 6385 /* sess has got an extra creation ref */ 6386 6387 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6388 if (!sess) 6389 goto out_term2; 6390 } else { 6391 if (sess->deleted) { 6392 goto out_term2; 6393 } 6394 6395 if (!kref_get_unless_zero(&sess->sess_kref)) { 6396 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6397 "%s: kref_get fail %8phC\n", 6398 __func__, sess->port_name); 6399 goto out_term2; 6400 } 6401 } 6402 6403 iocb = a; 6404 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6405 unpacked_lun = 6406 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6407 6408 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6409 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6410 6411 ha->tgt.tgt_ops->put_sess(sess); 6412 6413 if (rc != 0) 6414 goto out_term; 6415 return; 6416 6417 out_term2: 6418 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6419 out_term: 6420 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6421 } 6422 6423 static void qlt_sess_work_fn(struct work_struct *work) 6424 { 6425 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6426 struct scsi_qla_host *vha = tgt->vha; 6427 unsigned long flags; 6428 6429 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6430 6431 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6432 while (!list_empty(&tgt->sess_works_list)) { 6433 struct qla_tgt_sess_work_param *prm = list_entry( 6434 tgt->sess_works_list.next, typeof(*prm), 6435 sess_works_list_entry); 6436 6437 /* 6438 * This work can be scheduled on several CPUs at time, so we 6439 * must delete the entry to eliminate double processing 6440 */ 6441 list_del(&prm->sess_works_list_entry); 6442 6443 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6444 6445 switch (prm->type) { 6446 case QLA_TGT_SESS_WORK_ABORT: 6447 qlt_abort_work(tgt, prm); 6448 break; 6449 case QLA_TGT_SESS_WORK_TM: 6450 qlt_tmr_work(tgt, prm); 6451 break; 6452 default: 6453 BUG_ON(1); 6454 break; 6455 } 6456 6457 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6458 6459 kfree(prm); 6460 } 6461 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6462 } 6463 6464 /* Must be called under tgt_host_action_mutex */ 6465 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6466 { 6467 struct qla_tgt *tgt; 6468 int rc, i; 6469 struct qla_qpair_hint *h; 6470 6471 if (!QLA_TGT_MODE_ENABLED()) 6472 return 0; 6473 6474 if (!IS_TGT_MODE_CAPABLE(ha)) { 6475 ql_log(ql_log_warn, base_vha, 0xe070, 6476 "This adapter does not support target mode.\n"); 6477 return 0; 6478 } 6479 6480 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6481 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6482 6483 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6484 6485 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6486 if (!tgt) { 6487 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6488 "Unable to allocate struct qla_tgt\n"); 6489 return -ENOMEM; 6490 } 6491 6492 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6493 sizeof(struct qla_qpair_hint), 6494 GFP_KERNEL); 6495 if (!tgt->qphints) { 6496 kfree(tgt); 6497 ql_log(ql_log_warn, base_vha, 0x0197, 6498 "Unable to allocate qpair hints.\n"); 6499 return -ENOMEM; 6500 } 6501 6502 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6503 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6504 6505 rc = btree_init64(&tgt->lun_qpair_map); 6506 if (rc) { 6507 kfree(tgt->qphints); 6508 kfree(tgt); 6509 ql_log(ql_log_info, base_vha, 0x0198, 6510 "Unable to initialize lun_qpair_map btree\n"); 6511 return -EIO; 6512 } 6513 h = &tgt->qphints[0]; 6514 h->qpair = ha->base_qpair; 6515 INIT_LIST_HEAD(&h->hint_elem); 6516 h->cpuid = ha->base_qpair->cpuid; 6517 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6518 6519 for (i = 0; i < ha->max_qpairs; i++) { 6520 unsigned long flags; 6521 6522 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6523 6524 h = &tgt->qphints[i + 1]; 6525 INIT_LIST_HEAD(&h->hint_elem); 6526 if (qpair) { 6527 h->qpair = qpair; 6528 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6529 list_add_tail(&h->hint_elem, &qpair->hints_list); 6530 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6531 h->cpuid = qpair->cpuid; 6532 } 6533 } 6534 6535 tgt->ha = ha; 6536 tgt->vha = base_vha; 6537 init_waitqueue_head(&tgt->waitQ); 6538 INIT_LIST_HEAD(&tgt->del_sess_list); 6539 spin_lock_init(&tgt->sess_work_lock); 6540 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6541 INIT_LIST_HEAD(&tgt->sess_works_list); 6542 atomic_set(&tgt->tgt_global_resets_count, 0); 6543 6544 base_vha->vha_tgt.qla_tgt = tgt; 6545 6546 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6547 "qla_target(%d): using 64 Bit PCI addressing", 6548 base_vha->vp_idx); 6549 /* 3 is reserved */ 6550 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6551 6552 mutex_lock(&qla_tgt_mutex); 6553 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6554 mutex_unlock(&qla_tgt_mutex); 6555 6556 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6557 ha->tgt.tgt_ops->add_target(base_vha); 6558 6559 return 0; 6560 } 6561 6562 /* Must be called under tgt_host_action_mutex */ 6563 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6564 { 6565 if (!vha->vha_tgt.qla_tgt) 6566 return 0; 6567 6568 if (vha->fc_vport) { 6569 qlt_release(vha->vha_tgt.qla_tgt); 6570 return 0; 6571 } 6572 6573 /* free left over qfull cmds */ 6574 qlt_init_term_exchange(vha); 6575 6576 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6577 vha->host_no, ha); 6578 qlt_release(vha->vha_tgt.qla_tgt); 6579 6580 return 0; 6581 } 6582 6583 void qla_remove_hostmap(struct qla_hw_data *ha) 6584 { 6585 struct scsi_qla_host *node; 6586 u32 key = 0; 6587 6588 btree_for_each_safe32(&ha->host_map, key, node) 6589 btree_remove32(&ha->host_map, key); 6590 6591 btree_destroy32(&ha->host_map); 6592 } 6593 6594 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6595 unsigned char *b) 6596 { 6597 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 6598 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 6599 put_unaligned_be64(wwpn, b); 6600 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 6601 } 6602 6603 /** 6604 * qlt_lport_register - register lport with external module 6605 * 6606 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6607 * @phys_wwpn: physical port WWPN 6608 * @npiv_wwpn: NPIV WWPN 6609 * @npiv_wwnn: NPIV WWNN 6610 * @callback: lport initialization callback for tcm_qla2xxx code 6611 */ 6612 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6613 u64 npiv_wwpn, u64 npiv_wwnn, 6614 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6615 { 6616 struct qla_tgt *tgt; 6617 struct scsi_qla_host *vha; 6618 struct qla_hw_data *ha; 6619 struct Scsi_Host *host; 6620 unsigned long flags; 6621 int rc; 6622 u8 b[WWN_SIZE]; 6623 6624 mutex_lock(&qla_tgt_mutex); 6625 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6626 vha = tgt->vha; 6627 ha = vha->hw; 6628 6629 host = vha->host; 6630 if (!host) 6631 continue; 6632 6633 if (!(host->hostt->supported_mode & MODE_TARGET)) 6634 continue; 6635 6636 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6637 continue; 6638 6639 spin_lock_irqsave(&ha->hardware_lock, flags); 6640 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6641 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6642 host->host_no); 6643 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6644 continue; 6645 } 6646 if (tgt->tgt_stop) { 6647 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6648 host->host_no); 6649 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6650 continue; 6651 } 6652 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6653 6654 if (!scsi_host_get(host)) { 6655 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6656 "Unable to scsi_host_get() for" 6657 " qla2xxx scsi_host\n"); 6658 continue; 6659 } 6660 qlt_lport_dump(vha, phys_wwpn, b); 6661 6662 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6663 scsi_host_put(host); 6664 continue; 6665 } 6666 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6667 if (rc != 0) 6668 scsi_host_put(host); 6669 6670 mutex_unlock(&qla_tgt_mutex); 6671 return rc; 6672 } 6673 mutex_unlock(&qla_tgt_mutex); 6674 6675 return -ENODEV; 6676 } 6677 EXPORT_SYMBOL(qlt_lport_register); 6678 6679 /** 6680 * qlt_lport_deregister - Degister lport 6681 * 6682 * @vha: Registered scsi_qla_host pointer 6683 */ 6684 void qlt_lport_deregister(struct scsi_qla_host *vha) 6685 { 6686 struct qla_hw_data *ha = vha->hw; 6687 struct Scsi_Host *sh = vha->host; 6688 /* 6689 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6690 */ 6691 vha->vha_tgt.target_lport_ptr = NULL; 6692 ha->tgt.tgt_ops = NULL; 6693 /* 6694 * Release the Scsi_Host reference for the underlying qla2xxx host 6695 */ 6696 scsi_host_put(sh); 6697 } 6698 EXPORT_SYMBOL(qlt_lport_deregister); 6699 6700 /* Must be called under HW lock */ 6701 void qlt_set_mode(struct scsi_qla_host *vha) 6702 { 6703 switch (vha->qlini_mode) { 6704 case QLA2XXX_INI_MODE_DISABLED: 6705 case QLA2XXX_INI_MODE_EXCLUSIVE: 6706 vha->host->active_mode = MODE_TARGET; 6707 break; 6708 case QLA2XXX_INI_MODE_ENABLED: 6709 vha->host->active_mode = MODE_INITIATOR; 6710 break; 6711 case QLA2XXX_INI_MODE_DUAL: 6712 vha->host->active_mode = MODE_DUAL; 6713 break; 6714 default: 6715 break; 6716 } 6717 } 6718 6719 /* Must be called under HW lock */ 6720 static void qlt_clear_mode(struct scsi_qla_host *vha) 6721 { 6722 switch (vha->qlini_mode) { 6723 case QLA2XXX_INI_MODE_DISABLED: 6724 vha->host->active_mode = MODE_UNKNOWN; 6725 break; 6726 case QLA2XXX_INI_MODE_EXCLUSIVE: 6727 vha->host->active_mode = MODE_INITIATOR; 6728 break; 6729 case QLA2XXX_INI_MODE_ENABLED: 6730 case QLA2XXX_INI_MODE_DUAL: 6731 vha->host->active_mode = MODE_INITIATOR; 6732 break; 6733 default: 6734 break; 6735 } 6736 } 6737 6738 /* 6739 * qla_tgt_enable_vha - NO LOCK HELD 6740 * 6741 * host_reset, bring up w/ Target Mode Enabled 6742 */ 6743 void 6744 qlt_enable_vha(struct scsi_qla_host *vha) 6745 { 6746 struct qla_hw_data *ha = vha->hw; 6747 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6748 unsigned long flags; 6749 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6750 6751 if (!tgt) { 6752 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6753 "Unable to locate qla_tgt pointer from" 6754 " struct qla_hw_data\n"); 6755 dump_stack(); 6756 return; 6757 } 6758 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6759 return; 6760 6761 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 6762 ha->tgt.num_act_qpairs = ha->max_qpairs; 6763 spin_lock_irqsave(&ha->hardware_lock, flags); 6764 tgt->tgt_stopped = 0; 6765 qlt_set_mode(vha); 6766 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6767 6768 mutex_lock(&ha->optrom_mutex); 6769 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6770 "%s.\n", __func__); 6771 if (vha->vp_idx) { 6772 qla24xx_disable_vp(vha); 6773 qla24xx_enable_vp(vha); 6774 } else { 6775 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6776 qla2xxx_wake_dpc(base_vha); 6777 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 6778 QLA_SUCCESS); 6779 } 6780 mutex_unlock(&ha->optrom_mutex); 6781 } 6782 EXPORT_SYMBOL(qlt_enable_vha); 6783 6784 /* 6785 * qla_tgt_disable_vha - NO LOCK HELD 6786 * 6787 * Disable Target Mode and reset the adapter 6788 */ 6789 static void qlt_disable_vha(struct scsi_qla_host *vha) 6790 { 6791 struct qla_hw_data *ha = vha->hw; 6792 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6793 unsigned long flags; 6794 6795 if (!tgt) { 6796 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6797 "Unable to locate qla_tgt pointer from" 6798 " struct qla_hw_data\n"); 6799 dump_stack(); 6800 return; 6801 } 6802 6803 spin_lock_irqsave(&ha->hardware_lock, flags); 6804 qlt_clear_mode(vha); 6805 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6806 6807 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6808 qla2xxx_wake_dpc(vha); 6809 6810 /* 6811 * We are expecting the offline state. 6812 * QLA_FUNCTION_FAILED means that adapter is offline. 6813 */ 6814 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 6815 ql_dbg(ql_dbg_tgt, vha, 0xe081, 6816 "adapter is offline\n"); 6817 } 6818 6819 /* 6820 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6821 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6822 * members. 6823 */ 6824 void 6825 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6826 { 6827 vha->vha_tgt.qla_tgt = NULL; 6828 6829 mutex_init(&vha->vha_tgt.tgt_mutex); 6830 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6831 6832 qlt_clear_mode(vha); 6833 6834 /* 6835 * NOTE: Currently the value is kept the same for <24xx and 6836 * >=24xx ISPs. If it is necessary to change it, 6837 * the check should be added for specific ISPs, 6838 * assigning the value appropriately. 6839 */ 6840 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6841 6842 qlt_add_target(ha, vha); 6843 } 6844 6845 u8 6846 qlt_rff_id(struct scsi_qla_host *vha) 6847 { 6848 u8 fc4_feature = 0; 6849 /* 6850 * FC-4 Feature bit 0 indicates target functionality to the name server. 6851 */ 6852 if (qla_tgt_mode_enabled(vha)) { 6853 fc4_feature = BIT_0; 6854 } else if (qla_ini_mode_enabled(vha)) { 6855 fc4_feature = BIT_1; 6856 } else if (qla_dual_mode_enabled(vha)) 6857 fc4_feature = BIT_0 | BIT_1; 6858 6859 return fc4_feature; 6860 } 6861 6862 /* 6863 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6864 * @ha: HA context 6865 * 6866 * Beginning of ATIO ring has initialization control block already built 6867 * by nvram config routine. 6868 * 6869 * Returns 0 on success. 6870 */ 6871 void 6872 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6873 { 6874 struct qla_hw_data *ha = vha->hw; 6875 uint16_t cnt; 6876 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6877 6878 if (qla_ini_mode_enabled(vha)) 6879 return; 6880 6881 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6882 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6883 pkt++; 6884 } 6885 6886 } 6887 6888 /* 6889 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6890 * @ha: SCSI driver HA context 6891 */ 6892 void 6893 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6894 { 6895 struct qla_hw_data *ha = vha->hw; 6896 struct atio_from_isp *pkt; 6897 int cnt, i; 6898 6899 if (!ha->flags.fw_started) 6900 return; 6901 6902 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6903 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6904 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6905 cnt = pkt->u.raw.entry_count; 6906 6907 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6908 /* 6909 * This packet is corrupted. The header + payload 6910 * can not be trusted. There is no point in passing 6911 * it further up. 6912 */ 6913 ql_log(ql_log_warn, vha, 0xd03c, 6914 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6915 &pkt->u.isp24.fcp_hdr.s_id, 6916 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6917 pkt->u.isp24.exchange_addr, pkt); 6918 6919 adjust_corrupted_atio(pkt); 6920 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6921 ha_locked, 0); 6922 } else { 6923 qlt_24xx_atio_pkt_all_vps(vha, 6924 (struct atio_from_isp *)pkt, ha_locked); 6925 } 6926 6927 for (i = 0; i < cnt; i++) { 6928 ha->tgt.atio_ring_index++; 6929 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6930 ha->tgt.atio_ring_index = 0; 6931 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6932 } else 6933 ha->tgt.atio_ring_ptr++; 6934 6935 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 6936 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6937 } 6938 wmb(); 6939 } 6940 6941 /* Adjust ring index */ 6942 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6943 } 6944 6945 void 6946 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6947 { 6948 struct qla_hw_data *ha = vha->hw; 6949 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6950 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6951 6952 if (!QLA_TGT_MODE_ENABLED()) 6953 return; 6954 6955 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 6956 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 6957 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 6958 6959 if (ha->flags.msix_enabled) { 6960 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6961 if (IS_QLA2071(ha)) { 6962 /* 4 ports Baker: Enable Interrupt Handshake */ 6963 icb->msix_atio = 0; 6964 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6965 } else { 6966 icb->msix_atio = cpu_to_le16(msix->entry); 6967 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 6968 } 6969 ql_dbg(ql_dbg_init, vha, 0xf072, 6970 "Registering ICB vector 0x%x for atio que.\n", 6971 msix->entry); 6972 } 6973 } else { 6974 /* INTx|MSI */ 6975 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 6976 icb->msix_atio = 0; 6977 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 6978 ql_dbg(ql_dbg_init, vha, 0xf072, 6979 "%s: Use INTx for ATIOQ.\n", __func__); 6980 } 6981 } 6982 } 6983 6984 void 6985 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6986 { 6987 struct qla_hw_data *ha = vha->hw; 6988 u32 tmp; 6989 6990 if (!QLA_TGT_MODE_ENABLED()) 6991 return; 6992 6993 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6994 if (!ha->tgt.saved_set) { 6995 /* We save only once */ 6996 ha->tgt.saved_exchange_count = nv->exchange_count; 6997 ha->tgt.saved_firmware_options_1 = 6998 nv->firmware_options_1; 6999 ha->tgt.saved_firmware_options_2 = 7000 nv->firmware_options_2; 7001 ha->tgt.saved_firmware_options_3 = 7002 nv->firmware_options_3; 7003 ha->tgt.saved_set = 1; 7004 } 7005 7006 if (qla_tgt_mode_enabled(vha)) 7007 nv->exchange_count = cpu_to_le16(0xFFFF); 7008 else /* dual */ 7009 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7010 7011 /* Enable target mode */ 7012 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7013 7014 /* Disable ini mode, if requested */ 7015 if (qla_tgt_mode_enabled(vha)) 7016 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7017 7018 /* Disable Full Login after LIP */ 7019 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7020 /* Enable initial LIP */ 7021 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7022 if (ql2xtgt_tape_enable) 7023 /* Enable FC Tape support */ 7024 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7025 else 7026 /* Disable FC Tape support */ 7027 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7028 7029 /* Disable Full Login after LIP */ 7030 nv->host_p &= cpu_to_le32(~BIT_10); 7031 7032 /* 7033 * clear BIT 15 explicitly as we have seen at least 7034 * a couple of instances where this was set and this 7035 * was causing the firmware to not be initialized. 7036 */ 7037 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7038 /* Enable target PRLI control */ 7039 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7040 7041 if (IS_QLA25XX(ha)) { 7042 /* Change Loop-prefer to Pt-Pt */ 7043 tmp = ~(BIT_4|BIT_5|BIT_6); 7044 nv->firmware_options_2 &= cpu_to_le32(tmp); 7045 tmp = P2P << 4; 7046 nv->firmware_options_2 |= cpu_to_le32(tmp); 7047 } 7048 } else { 7049 if (ha->tgt.saved_set) { 7050 nv->exchange_count = ha->tgt.saved_exchange_count; 7051 nv->firmware_options_1 = 7052 ha->tgt.saved_firmware_options_1; 7053 nv->firmware_options_2 = 7054 ha->tgt.saved_firmware_options_2; 7055 nv->firmware_options_3 = 7056 ha->tgt.saved_firmware_options_3; 7057 } 7058 return; 7059 } 7060 7061 if (ha->base_qpair->enable_class_2) { 7062 if (vha->flags.init_done) 7063 fc_host_supported_classes(vha->host) = 7064 FC_COS_CLASS2 | FC_COS_CLASS3; 7065 7066 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7067 } else { 7068 if (vha->flags.init_done) 7069 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7070 7071 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7072 } 7073 } 7074 7075 void 7076 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7077 struct init_cb_24xx *icb) 7078 { 7079 struct qla_hw_data *ha = vha->hw; 7080 7081 if (!QLA_TGT_MODE_ENABLED()) 7082 return; 7083 7084 if (ha->tgt.node_name_set) { 7085 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7086 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7087 } 7088 } 7089 7090 void 7091 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7092 { 7093 struct qla_hw_data *ha = vha->hw; 7094 u32 tmp; 7095 7096 if (!QLA_TGT_MODE_ENABLED()) 7097 return; 7098 7099 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7100 if (!ha->tgt.saved_set) { 7101 /* We save only once */ 7102 ha->tgt.saved_exchange_count = nv->exchange_count; 7103 ha->tgt.saved_firmware_options_1 = 7104 nv->firmware_options_1; 7105 ha->tgt.saved_firmware_options_2 = 7106 nv->firmware_options_2; 7107 ha->tgt.saved_firmware_options_3 = 7108 nv->firmware_options_3; 7109 ha->tgt.saved_set = 1; 7110 } 7111 7112 if (qla_tgt_mode_enabled(vha)) 7113 nv->exchange_count = cpu_to_le16(0xFFFF); 7114 else /* dual */ 7115 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7116 7117 /* Enable target mode */ 7118 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7119 7120 /* Disable ini mode, if requested */ 7121 if (qla_tgt_mode_enabled(vha)) 7122 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7123 /* Disable Full Login after LIP */ 7124 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7125 /* Enable initial LIP */ 7126 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7127 /* 7128 * clear BIT 15 explicitly as we have seen at 7129 * least a couple of instances where this was set 7130 * and this was causing the firmware to not be 7131 * initialized. 7132 */ 7133 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7134 if (ql2xtgt_tape_enable) 7135 /* Enable FC tape support */ 7136 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7137 else 7138 /* Disable FC tape support */ 7139 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7140 7141 /* Disable Full Login after LIP */ 7142 nv->host_p &= cpu_to_le32(~BIT_10); 7143 /* Enable target PRLI control */ 7144 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7145 7146 /* Change Loop-prefer to Pt-Pt */ 7147 tmp = ~(BIT_4|BIT_5|BIT_6); 7148 nv->firmware_options_2 &= cpu_to_le32(tmp); 7149 tmp = P2P << 4; 7150 nv->firmware_options_2 |= cpu_to_le32(tmp); 7151 } else { 7152 if (ha->tgt.saved_set) { 7153 nv->exchange_count = ha->tgt.saved_exchange_count; 7154 nv->firmware_options_1 = 7155 ha->tgt.saved_firmware_options_1; 7156 nv->firmware_options_2 = 7157 ha->tgt.saved_firmware_options_2; 7158 nv->firmware_options_3 = 7159 ha->tgt.saved_firmware_options_3; 7160 } 7161 return; 7162 } 7163 7164 if (ha->base_qpair->enable_class_2) { 7165 if (vha->flags.init_done) 7166 fc_host_supported_classes(vha->host) = 7167 FC_COS_CLASS2 | FC_COS_CLASS3; 7168 7169 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7170 } else { 7171 if (vha->flags.init_done) 7172 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7173 7174 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7175 } 7176 } 7177 7178 void 7179 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7180 struct init_cb_81xx *icb) 7181 { 7182 struct qla_hw_data *ha = vha->hw; 7183 7184 if (!QLA_TGT_MODE_ENABLED()) 7185 return; 7186 7187 if (ha->tgt.node_name_set) { 7188 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7189 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7190 } 7191 } 7192 7193 void 7194 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7195 { 7196 if (!QLA_TGT_MODE_ENABLED()) 7197 return; 7198 7199 ha->msix_count += 1; /* For ATIO Q */ 7200 } 7201 7202 7203 void 7204 qlt_modify_vp_config(struct scsi_qla_host *vha, 7205 struct vp_config_entry_24xx *vpmod) 7206 { 7207 /* enable target mode. Bit5 = 1 => disable */ 7208 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7209 vpmod->options_idx1 &= ~BIT_5; 7210 7211 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7212 if (qla_tgt_mode_enabled(vha)) 7213 vpmod->options_idx1 &= ~BIT_4; 7214 } 7215 7216 void 7217 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7218 { 7219 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7220 if (!QLA_TGT_MODE_ENABLED()) 7221 return; 7222 7223 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7224 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7225 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7226 } else { 7227 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7228 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7229 } 7230 7231 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7232 7233 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7234 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7235 qlt_unknown_atio_work_fn); 7236 7237 qlt_clear_mode(base_vha); 7238 7239 qlt_update_vp_map(base_vha, SET_VP_IDX); 7240 } 7241 7242 irqreturn_t 7243 qla83xx_msix_atio_q(int irq, void *dev_id) 7244 { 7245 struct rsp_que *rsp; 7246 scsi_qla_host_t *vha; 7247 struct qla_hw_data *ha; 7248 unsigned long flags; 7249 7250 rsp = (struct rsp_que *) dev_id; 7251 ha = rsp->hw; 7252 vha = pci_get_drvdata(ha->pdev); 7253 7254 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7255 7256 qlt_24xx_process_atio_queue(vha, 0); 7257 7258 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7259 7260 return IRQ_HANDLED; 7261 } 7262 7263 static void 7264 qlt_handle_abts_recv_work(struct work_struct *work) 7265 { 7266 struct qla_tgt_sess_op *op = container_of(work, 7267 struct qla_tgt_sess_op, work); 7268 scsi_qla_host_t *vha = op->vha; 7269 struct qla_hw_data *ha = vha->hw; 7270 unsigned long flags; 7271 7272 if (qla2x00_reset_active(vha) || 7273 (op->chip_reset != ha->base_qpair->chip_reset)) 7274 return; 7275 7276 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7277 qlt_24xx_process_atio_queue(vha, 0); 7278 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7279 7280 spin_lock_irqsave(&ha->hardware_lock, flags); 7281 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7282 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7283 7284 kfree(op); 7285 } 7286 7287 void 7288 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7289 response_t *pkt) 7290 { 7291 struct qla_tgt_sess_op *op; 7292 7293 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7294 7295 if (!op) { 7296 /* do not reach for ATIO queue here. This is best effort err 7297 * recovery at this point. 7298 */ 7299 qlt_response_pkt_all_vps(vha, rsp, pkt); 7300 return; 7301 } 7302 7303 memcpy(&op->atio, pkt, sizeof(*pkt)); 7304 op->vha = vha; 7305 op->chip_reset = vha->hw->base_qpair->chip_reset; 7306 op->rsp = rsp; 7307 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7308 queue_work(qla_tgt_wq, &op->work); 7309 return; 7310 } 7311 7312 int 7313 qlt_mem_alloc(struct qla_hw_data *ha) 7314 { 7315 if (!QLA_TGT_MODE_ENABLED()) 7316 return 0; 7317 7318 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7319 sizeof(struct qla_tgt_vp_map), 7320 GFP_KERNEL); 7321 if (!ha->tgt.tgt_vp_map) 7322 return -ENOMEM; 7323 7324 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7325 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7326 &ha->tgt.atio_dma, GFP_KERNEL); 7327 if (!ha->tgt.atio_ring) { 7328 kfree(ha->tgt.tgt_vp_map); 7329 return -ENOMEM; 7330 } 7331 return 0; 7332 } 7333 7334 void 7335 qlt_mem_free(struct qla_hw_data *ha) 7336 { 7337 if (!QLA_TGT_MODE_ENABLED()) 7338 return; 7339 7340 if (ha->tgt.atio_ring) { 7341 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7342 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7343 ha->tgt.atio_dma); 7344 } 7345 ha->tgt.atio_ring = NULL; 7346 ha->tgt.atio_dma = 0; 7347 kfree(ha->tgt.tgt_vp_map); 7348 ha->tgt.tgt_vp_map = NULL; 7349 } 7350 7351 /* vport_slock to be held by the caller */ 7352 void 7353 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7354 { 7355 void *slot; 7356 u32 key; 7357 int rc; 7358 7359 key = vha->d_id.b24; 7360 7361 switch (cmd) { 7362 case SET_VP_IDX: 7363 if (!QLA_TGT_MODE_ENABLED()) 7364 return; 7365 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7366 break; 7367 case SET_AL_PA: 7368 slot = btree_lookup32(&vha->hw->host_map, key); 7369 if (!slot) { 7370 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7371 "Save vha in host_map %p %06x\n", vha, key); 7372 rc = btree_insert32(&vha->hw->host_map, 7373 key, vha, GFP_ATOMIC); 7374 if (rc) 7375 ql_log(ql_log_info, vha, 0xd03e, 7376 "Unable to insert s_id into host_map: %06x\n", 7377 key); 7378 return; 7379 } 7380 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7381 "replace existing vha in host_map %p %06x\n", vha, key); 7382 btree_update32(&vha->hw->host_map, key, vha); 7383 break; 7384 case RESET_VP_IDX: 7385 if (!QLA_TGT_MODE_ENABLED()) 7386 return; 7387 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7388 break; 7389 case RESET_AL_PA: 7390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7391 "clear vha in host_map %p %06x\n", vha, key); 7392 slot = btree_lookup32(&vha->hw->host_map, key); 7393 if (slot) 7394 btree_remove32(&vha->hw->host_map, key); 7395 vha->d_id.b24 = 0; 7396 break; 7397 } 7398 } 7399 7400 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7401 { 7402 7403 if (!vha->d_id.b24) { 7404 vha->d_id = id; 7405 qlt_update_vp_map(vha, SET_AL_PA); 7406 } else if (vha->d_id.b24 != id.b24) { 7407 qlt_update_vp_map(vha, RESET_AL_PA); 7408 vha->d_id = id; 7409 qlt_update_vp_map(vha, SET_AL_PA); 7410 } 7411 } 7412 7413 static int __init qlt_parse_ini_mode(void) 7414 { 7415 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7416 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7417 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7418 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7419 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7420 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7421 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7422 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7423 else 7424 return false; 7425 7426 return true; 7427 } 7428 7429 int __init qlt_init(void) 7430 { 7431 int ret; 7432 7433 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 7434 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 7435 7436 if (!qlt_parse_ini_mode()) { 7437 ql_log(ql_log_fatal, NULL, 0xe06b, 7438 "qlt_parse_ini_mode() failed\n"); 7439 return -EINVAL; 7440 } 7441 7442 if (!QLA_TGT_MODE_ENABLED()) 7443 return 0; 7444 7445 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7446 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7447 qla_tgt_mgmt_cmd), 0, NULL); 7448 if (!qla_tgt_mgmt_cmd_cachep) { 7449 ql_log(ql_log_fatal, NULL, 0xd04b, 7450 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7451 return -ENOMEM; 7452 } 7453 7454 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7455 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7456 0, NULL); 7457 7458 if (!qla_tgt_plogi_cachep) { 7459 ql_log(ql_log_fatal, NULL, 0xe06d, 7460 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7461 ret = -ENOMEM; 7462 goto out_mgmt_cmd_cachep; 7463 } 7464 7465 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7466 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7467 if (!qla_tgt_mgmt_cmd_mempool) { 7468 ql_log(ql_log_fatal, NULL, 0xe06e, 7469 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7470 ret = -ENOMEM; 7471 goto out_plogi_cachep; 7472 } 7473 7474 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7475 if (!qla_tgt_wq) { 7476 ql_log(ql_log_fatal, NULL, 0xe06f, 7477 "alloc_workqueue for qla_tgt_wq failed\n"); 7478 ret = -ENOMEM; 7479 goto out_cmd_mempool; 7480 } 7481 /* 7482 * Return 1 to signal that initiator-mode is being disabled 7483 */ 7484 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7485 7486 out_cmd_mempool: 7487 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7488 out_plogi_cachep: 7489 kmem_cache_destroy(qla_tgt_plogi_cachep); 7490 out_mgmt_cmd_cachep: 7491 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7492 return ret; 7493 } 7494 7495 void qlt_exit(void) 7496 { 7497 if (!QLA_TGT_MODE_ENABLED()) 7498 return; 7499 7500 destroy_workqueue(qla_tgt_wq); 7501 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7502 kmem_cache_destroy(qla_tgt_plogi_cachep); 7503 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7504 } 7505