1 /* 2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 3 * 4 * based on qla2x00t.c code: 5 * 6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 7 * Copyright (C) 2004 - 2005 Leonid Stoljar 8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 9 * Copyright (C) 2006 - 2010 ID7 Ltd. 10 * 11 * Forward port and refactoring to modern qla2xxx and target/configfs 12 * 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation, version 2 18 * of the License. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/types.h> 29 #include <linux/blkdev.h> 30 #include <linux/interrupt.h> 31 #include <linux/pci.h> 32 #include <linux/delay.h> 33 #include <linux/list.h> 34 #include <linux/workqueue.h> 35 #include <asm/unaligned.h> 36 #include <scsi/scsi.h> 37 #include <scsi/scsi_host.h> 38 #include <scsi/scsi_tcq.h> 39 #include <target/target_core_base.h> 40 #include <target/target_core_fabric.h> 41 42 #include "qla_def.h" 43 #include "qla_target.h" 44 45 static int ql2xtgt_tape_enable; 46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 47 MODULE_PARM_DESC(ql2xtgt_tape_enable, 48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 49 50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 51 module_param(qlini_mode, charp, S_IRUGO); 52 MODULE_PARM_DESC(qlini_mode, 53 "Determines when initiator mode will be enabled. Possible values: " 54 "\"exclusive\" - initiator mode will be enabled on load, " 55 "disabled on enabling target mode and then on disabling target mode " 56 "enabled back; " 57 "\"disabled\" - initiator mode will never be enabled; " 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 59 "when ready " 60 "\"enabled\" (default) - initiator mode will always stay enabled."); 61 62 static int ql_dm_tgt_ex_pct = 50; 63 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 64 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 65 "For Dual Mode (qlini_mode=dual), this parameter determines " 66 "the percentage of exchanges/cmds FW will allocate resources " 67 "for Target mode."); 68 69 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 70 71 static int temp_sam_status = SAM_STAT_BUSY; 72 73 /* 74 * From scsi/fc/fc_fcp.h 75 */ 76 enum fcp_resp_rsp_codes { 77 FCP_TMF_CMPL = 0, 78 FCP_DATA_LEN_INVALID = 1, 79 FCP_CMND_FIELDS_INVALID = 2, 80 FCP_DATA_PARAM_MISMATCH = 3, 81 FCP_TMF_REJECTED = 4, 82 FCP_TMF_FAILED = 5, 83 FCP_TMF_INVALID_LUN = 9, 84 }; 85 86 /* 87 * fc_pri_ta from scsi/fc/fc_fcp.h 88 */ 89 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 90 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 91 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 92 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 93 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 94 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 95 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 96 97 /* 98 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 99 * must be called under HW lock and could unlock/lock it inside. 100 * It isn't an issue, since in the current implementation on the time when 101 * those functions are called: 102 * 103 * - Either context is IRQ and only IRQ handler can modify HW data, 104 * including rings related fields, 105 * 106 * - Or access to target mode variables from struct qla_tgt doesn't 107 * cross those functions boundaries, except tgt_stop, which 108 * additionally protected by irq_cmd_count. 109 */ 110 /* Predefs for callbacks handed to qla2xxx LLD */ 111 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 112 struct atio_from_isp *pkt, uint8_t); 113 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); 114 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 115 int fn, void *iocb, int flags); 116 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd 117 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 118 static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, 119 struct qla_tgt_cmd *cmd); 120 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 121 struct atio_from_isp *atio, uint16_t status, int qfull); 122 static void qlt_disable_vha(struct scsi_qla_host *vha); 123 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 124 static void qlt_send_notify_ack(struct scsi_qla_host *vha, 125 struct imm_ntfy_from_isp *ntfy, 126 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 127 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 128 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 129 struct imm_ntfy_from_isp *imm, int ha_locked); 130 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 131 fc_port_t *fcport, bool local); 132 void qlt_unreg_sess(struct fc_port *sess); 133 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 134 struct abts_recv_from_24xx *); 135 136 /* 137 * Global Variables 138 */ 139 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 140 static 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 if (rc != QLA_SUCCESS) { 177 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 178 "qla_target(%d): issue_marker() failed\n", 179 vha->vp_idx); 180 } 181 return rc; 182 } 183 return QLA_SUCCESS; 184 } 185 186 static inline 187 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 188 uint8_t *d_id) 189 { 190 struct scsi_qla_host *host; 191 uint32_t key = 0; 192 193 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) && 194 (vha->d_id.b.al_pa == d_id[2])) 195 return vha; 196 197 key = (uint32_t)d_id[0] << 16; 198 key |= (uint32_t)d_id[1] << 8; 199 key |= (uint32_t)d_id[2]; 200 201 host = btree_lookup32(&vha->hw->tgt.host_map, key); 202 if (!host) 203 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 204 "Unable to find host %06x\n", key); 205 206 return host; 207 } 208 209 static inline 210 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 211 uint16_t vp_idx) 212 { 213 struct qla_hw_data *ha = vha->hw; 214 215 if (vha->vp_idx == vp_idx) 216 return vha; 217 218 BUG_ON(ha->tgt.tgt_vp_map == NULL); 219 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 220 return ha->tgt.tgt_vp_map[vp_idx].vha; 221 222 return NULL; 223 } 224 225 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 226 { 227 unsigned long flags; 228 229 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 230 231 vha->hw->tgt.num_pend_cmds++; 232 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 233 vha->qla_stats.stat_max_pend_cmds = 234 vha->hw->tgt.num_pend_cmds; 235 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 236 } 237 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 238 { 239 unsigned long flags; 240 241 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 242 vha->hw->tgt.num_pend_cmds--; 243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 244 } 245 246 247 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 248 struct atio_from_isp *atio, uint8_t ha_locked) 249 { 250 struct qla_tgt_sess_op *u; 251 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 252 unsigned long flags; 253 254 if (tgt->tgt_stop) { 255 ql_dbg(ql_dbg_async, vha, 0xffff, 256 "qla_target(%d): dropping unknown ATIO_TYPE7, " 257 "because tgt is being stopped", vha->vp_idx); 258 goto out_term; 259 } 260 261 u = kzalloc(sizeof(*u), GFP_ATOMIC); 262 if (u == NULL) { 263 ql_dbg(ql_dbg_async, vha, 0xffff, 264 "Alloc of struct unknown_atio (size %zd) failed", sizeof(*u)); 265 /* It should be harmless and on the next retry should work well */ 266 goto out_term; 267 } 268 269 u->vha = vha; 270 memcpy(&u->atio, atio, sizeof(*atio)); 271 INIT_LIST_HEAD(&u->cmd_list); 272 273 spin_lock_irqsave(&vha->cmd_list_lock, flags); 274 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 275 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 276 277 schedule_delayed_work(&vha->unknown_atio_work, 1); 278 279 out: 280 return; 281 282 out_term: 283 qlt_send_term_exchange(vha, NULL, atio, ha_locked, 0); 284 goto out; 285 } 286 287 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 288 uint8_t ha_locked) 289 { 290 struct qla_tgt_sess_op *u, *t; 291 scsi_qla_host_t *host; 292 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 293 unsigned long flags; 294 uint8_t queued = 0; 295 296 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 297 if (u->aborted) { 298 ql_dbg(ql_dbg_async, vha, 0xffff, 299 "Freeing unknown %s %p, because of Abort", 300 "ATIO_TYPE7", u); 301 qlt_send_term_exchange(vha, NULL, &u->atio, 302 ha_locked, 0); 303 goto abort; 304 } 305 306 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 307 if (host != NULL) { 308 ql_dbg(ql_dbg_async, vha, 0xffff, 309 "Requeuing unknown ATIO_TYPE7 %p", u); 310 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 311 } else if (tgt->tgt_stop) { 312 ql_dbg(ql_dbg_async, vha, 0xffff, 313 "Freeing unknown %s %p, because tgt is being stopped", 314 "ATIO_TYPE7", u); 315 qlt_send_term_exchange(vha, NULL, &u->atio, 316 ha_locked, 0); 317 } else { 318 ql_dbg(ql_dbg_async, vha, 0xffff, 319 "u %p, vha %p, host %p, sched again..", u, 320 vha, host); 321 if (!queued) { 322 queued = 1; 323 schedule_delayed_work(&vha->unknown_atio_work, 324 1); 325 } 326 continue; 327 } 328 329 abort: 330 spin_lock_irqsave(&vha->cmd_list_lock, flags); 331 list_del(&u->cmd_list); 332 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 333 kfree(u); 334 } 335 } 336 337 void qlt_unknown_atio_work_fn(struct work_struct *work) 338 { 339 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 340 struct scsi_qla_host, unknown_atio_work); 341 342 qlt_try_to_dequeue_unknown_atios(vha, 0); 343 } 344 345 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 346 struct atio_from_isp *atio, uint8_t ha_locked) 347 { 348 ql_dbg(ql_dbg_tgt, vha, 0xe072, 349 "%s: qla_target(%d): type %x ox_id %04x\n", 350 __func__, vha->vp_idx, atio->u.raw.entry_type, 351 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 352 353 switch (atio->u.raw.entry_type) { 354 case ATIO_TYPE7: 355 { 356 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 357 atio->u.isp24.fcp_hdr.d_id); 358 if (unlikely(NULL == host)) { 359 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 360 "qla_target(%d): Received ATIO_TYPE7 " 361 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 362 atio->u.isp24.fcp_hdr.d_id[0], 363 atio->u.isp24.fcp_hdr.d_id[1], 364 atio->u.isp24.fcp_hdr.d_id[2]); 365 366 367 qlt_queue_unknown_atio(vha, atio, ha_locked); 368 break; 369 } 370 if (unlikely(!list_empty(&vha->unknown_atio_list))) 371 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 372 373 qlt_24xx_atio_pkt(host, atio, ha_locked); 374 break; 375 } 376 377 case IMMED_NOTIFY_TYPE: 378 { 379 struct scsi_qla_host *host = vha; 380 struct imm_ntfy_from_isp *entry = 381 (struct imm_ntfy_from_isp *)atio; 382 383 if ((entry->u.isp24.vp_index != 0xFF) && 384 (entry->u.isp24.nport_handle != 0xFFFF)) { 385 host = qlt_find_host_by_vp_idx(vha, 386 entry->u.isp24.vp_index); 387 if (unlikely(!host)) { 388 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 389 "qla_target(%d): Received " 390 "ATIO (IMMED_NOTIFY_TYPE) " 391 "with unknown vp_index %d\n", 392 vha->vp_idx, entry->u.isp24.vp_index); 393 break; 394 } 395 } 396 qlt_24xx_atio_pkt(host, atio, ha_locked); 397 break; 398 } 399 400 case VP_RPT_ID_IOCB_TYPE: 401 qla24xx_report_id_acquisition(vha, 402 (struct vp_rpt_id_entry_24xx *)atio); 403 break; 404 405 case ABTS_RECV_24XX: 406 { 407 struct abts_recv_from_24xx *entry = 408 (struct abts_recv_from_24xx *)atio; 409 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 410 entry->vp_index); 411 unsigned long flags; 412 413 if (unlikely(!host)) { 414 ql_dbg(ql_dbg_tgt, vha, 0xffff, 415 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 416 "received, with unknown vp_index %d\n", 417 vha->vp_idx, entry->vp_index); 418 break; 419 } 420 if (!ha_locked) 421 spin_lock_irqsave(&host->hw->hardware_lock, flags); 422 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 423 if (!ha_locked) 424 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 425 break; 426 } 427 428 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 429 430 default: 431 ql_dbg(ql_dbg_tgt, vha, 0xe040, 432 "qla_target(%d): Received unknown ATIO atio " 433 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 434 break; 435 } 436 437 return false; 438 } 439 440 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt) 441 { 442 switch (pkt->entry_type) { 443 case CTIO_CRC2: 444 ql_dbg(ql_dbg_tgt, vha, 0xe073, 445 "qla_target(%d):%s: CRC2 Response pkt\n", 446 vha->vp_idx, __func__); 447 case CTIO_TYPE7: 448 { 449 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 450 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 451 entry->vp_index); 452 if (unlikely(!host)) { 453 ql_dbg(ql_dbg_tgt, vha, 0xe041, 454 "qla_target(%d): Response pkt (CTIO_TYPE7) " 455 "received, with unknown vp_index %d\n", 456 vha->vp_idx, entry->vp_index); 457 break; 458 } 459 qlt_response_pkt(host, pkt); 460 break; 461 } 462 463 case IMMED_NOTIFY_TYPE: 464 { 465 struct scsi_qla_host *host = vha; 466 struct imm_ntfy_from_isp *entry = 467 (struct imm_ntfy_from_isp *)pkt; 468 469 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 470 if (unlikely(!host)) { 471 ql_dbg(ql_dbg_tgt, vha, 0xe042, 472 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 473 "received, with unknown vp_index %d\n", 474 vha->vp_idx, entry->u.isp24.vp_index); 475 break; 476 } 477 qlt_response_pkt(host, pkt); 478 break; 479 } 480 481 case NOTIFY_ACK_TYPE: 482 { 483 struct scsi_qla_host *host = vha; 484 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 485 486 if (0xFF != entry->u.isp24.vp_index) { 487 host = qlt_find_host_by_vp_idx(vha, 488 entry->u.isp24.vp_index); 489 if (unlikely(!host)) { 490 ql_dbg(ql_dbg_tgt, vha, 0xe043, 491 "qla_target(%d): Response " 492 "pkt (NOTIFY_ACK_TYPE) " 493 "received, with unknown " 494 "vp_index %d\n", vha->vp_idx, 495 entry->u.isp24.vp_index); 496 break; 497 } 498 } 499 qlt_response_pkt(host, pkt); 500 break; 501 } 502 503 case ABTS_RECV_24XX: 504 { 505 struct abts_recv_from_24xx *entry = 506 (struct abts_recv_from_24xx *)pkt; 507 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 508 entry->vp_index); 509 if (unlikely(!host)) { 510 ql_dbg(ql_dbg_tgt, vha, 0xe044, 511 "qla_target(%d): Response pkt " 512 "(ABTS_RECV_24XX) received, with unknown " 513 "vp_index %d\n", vha->vp_idx, entry->vp_index); 514 break; 515 } 516 qlt_response_pkt(host, pkt); 517 break; 518 } 519 520 case ABTS_RESP_24XX: 521 { 522 struct abts_resp_to_24xx *entry = 523 (struct abts_resp_to_24xx *)pkt; 524 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 525 entry->vp_index); 526 if (unlikely(!host)) { 527 ql_dbg(ql_dbg_tgt, vha, 0xe045, 528 "qla_target(%d): Response pkt " 529 "(ABTS_RECV_24XX) received, with unknown " 530 "vp_index %d\n", vha->vp_idx, entry->vp_index); 531 break; 532 } 533 qlt_response_pkt(host, pkt); 534 break; 535 } 536 537 default: 538 qlt_response_pkt(vha, pkt); 539 break; 540 } 541 542 } 543 544 /* 545 * All qlt_plogi_ack_t operations are protected by hardware_lock 546 */ 547 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 548 struct imm_ntfy_from_isp *ntfy, int type) 549 { 550 struct qla_work_evt *e; 551 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 552 if (!e) 553 return QLA_FUNCTION_FAILED; 554 555 e->u.nack.fcport = fcport; 556 e->u.nack.type = type; 557 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 558 return qla2x00_post_work(vha, e); 559 } 560 561 static 562 void qla2x00_async_nack_sp_done(void *s, int res) 563 { 564 struct srb *sp = (struct srb *)s; 565 struct scsi_qla_host *vha = sp->vha; 566 unsigned long flags; 567 568 ql_dbg(ql_dbg_disc, vha, 0xffff, 569 "Async done-%s res %x %8phC type %d\n", 570 sp->name, res, sp->fcport->port_name, sp->type); 571 572 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 573 sp->fcport->flags &= ~FCF_ASYNC_SENT; 574 sp->fcport->chip_reset = vha->hw->chip_reset; 575 576 switch (sp->type) { 577 case SRB_NACK_PLOGI: 578 sp->fcport->login_gen++; 579 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 580 sp->fcport->logout_on_delete = 1; 581 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 582 break; 583 584 case SRB_NACK_PRLI: 585 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 586 sp->fcport->deleted = 0; 587 588 if (!sp->fcport->login_succ && 589 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 590 sp->fcport->login_succ = 1; 591 592 vha->fcport_count++; 593 594 if (!IS_IIDMA_CAPABLE(vha->hw) || 595 !vha->hw->flags.gpsc_supported) { 596 ql_dbg(ql_dbg_disc, vha, 0xffff, 597 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 598 __func__, __LINE__, 599 sp->fcport->port_name, 600 vha->fcport_count); 601 602 qla24xx_post_upd_fcport_work(vha, sp->fcport); 603 } else { 604 ql_dbg(ql_dbg_disc, vha, 0xffff, 605 "%s %d %8phC post gpsc fcp_cnt %d\n", 606 __func__, __LINE__, 607 sp->fcport->port_name, 608 vha->fcport_count); 609 610 qla24xx_post_gpsc_work(vha, sp->fcport); 611 } 612 } 613 break; 614 615 case SRB_NACK_LOGO: 616 sp->fcport->login_gen++; 617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 619 break; 620 } 621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 622 623 sp->free(sp); 624 } 625 626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 627 struct imm_ntfy_from_isp *ntfy, int type) 628 { 629 int rval = QLA_FUNCTION_FAILED; 630 srb_t *sp; 631 char *c = NULL; 632 633 fcport->flags |= FCF_ASYNC_SENT; 634 switch (type) { 635 case SRB_NACK_PLOGI: 636 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 637 c = "PLOGI"; 638 break; 639 case SRB_NACK_PRLI: 640 fcport->fw_login_state = DSC_LS_PRLI_PEND; 641 fcport->deleted = 0; 642 c = "PRLI"; 643 break; 644 case SRB_NACK_LOGO: 645 fcport->fw_login_state = DSC_LS_LOGO_PEND; 646 c = "LOGO"; 647 break; 648 } 649 650 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 651 if (!sp) 652 goto done; 653 654 sp->type = type; 655 sp->name = "nack"; 656 657 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 658 659 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 660 661 sp->done = qla2x00_async_nack_sp_done; 662 663 rval = qla2x00_start_sp(sp); 664 if (rval != QLA_SUCCESS) 665 goto done_free_sp; 666 667 ql_dbg(ql_dbg_disc, vha, 0xffff, 668 "Async-%s %8phC hndl %x %s\n", 669 sp->name, fcport->port_name, sp->handle, c); 670 671 return rval; 672 673 done_free_sp: 674 sp->free(sp); 675 done: 676 fcport->flags &= ~FCF_ASYNC_SENT; 677 return rval; 678 } 679 680 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 681 { 682 fc_port_t *t; 683 unsigned long flags; 684 685 switch (e->u.nack.type) { 686 case SRB_NACK_PRLI: 687 mutex_lock(&vha->vha_tgt.tgt_mutex); 688 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 689 mutex_unlock(&vha->vha_tgt.tgt_mutex); 690 if (t) { 691 ql_log(ql_log_info, vha, 0xffff, 692 "%s create sess success %p", __func__, t); 693 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 694 /* create sess has an extra kref */ 695 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 696 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 697 } 698 break; 699 } 700 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 701 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); 702 } 703 704 void qla24xx_delete_sess_fn(struct work_struct *work) 705 { 706 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 707 struct qla_hw_data *ha = fcport->vha->hw; 708 unsigned long flags; 709 710 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 711 712 if (fcport->se_sess) { 713 ha->tgt.tgt_ops->shutdown_sess(fcport); 714 ha->tgt.tgt_ops->put_sess(fcport); 715 } else { 716 qlt_unreg_sess(fcport); 717 } 718 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 719 } 720 721 /* 722 * Called from qla2x00_reg_remote_port() 723 */ 724 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 725 { 726 struct qla_hw_data *ha = vha->hw; 727 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 728 struct fc_port *sess = fcport; 729 unsigned long flags; 730 731 if (!vha->hw->tgt.tgt_ops) 732 return; 733 734 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 735 if (tgt->tgt_stop) { 736 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 737 return; 738 } 739 740 if (fcport->disc_state == DSC_DELETE_PEND) { 741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 742 return; 743 } 744 745 if (!sess->se_sess) { 746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 747 748 mutex_lock(&vha->vha_tgt.tgt_mutex); 749 sess = qlt_create_sess(vha, fcport, false); 750 mutex_unlock(&vha->vha_tgt.tgt_mutex); 751 752 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 753 } else { 754 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 755 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 756 return; 757 } 758 759 if (!kref_get_unless_zero(&sess->sess_kref)) { 760 ql_dbg(ql_dbg_disc, vha, 0xffff, 761 "%s: kref_get fail sess %8phC \n", 762 __func__, sess->port_name); 763 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 764 return; 765 } 766 767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 768 "qla_target(%u): %ssession for port %8phC " 769 "(loop ID %d) reappeared\n", vha->vp_idx, 770 sess->local ? "local " : "", sess->port_name, sess->loop_id); 771 772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 773 "Reappeared sess %p\n", sess); 774 775 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 776 fcport->loop_id, 777 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 778 } 779 780 if (sess && sess->local) { 781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 782 "qla_target(%u): local session for " 783 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 784 fcport->port_name, sess->loop_id); 785 sess->local = 0; 786 } 787 ha->tgt.tgt_ops->put_sess(sess); 788 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 789 } 790 791 /* 792 * This is a zero-base ref-counting solution, since hardware_lock 793 * guarantees that ref_count is not modified concurrently. 794 * Upon successful return content of iocb is undefined 795 */ 796 static struct qlt_plogi_ack_t * 797 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 798 struct imm_ntfy_from_isp *iocb) 799 { 800 struct qlt_plogi_ack_t *pla; 801 802 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 803 if (pla->id.b24 == id->b24) { 804 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 805 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 806 return pla; 807 } 808 } 809 810 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 811 if (!pla) { 812 ql_dbg(ql_dbg_async, vha, 0x5088, 813 "qla_target(%d): Allocation of plogi_ack failed\n", 814 vha->vp_idx); 815 return NULL; 816 } 817 818 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 819 pla->id = *id; 820 list_add_tail(&pla->list, &vha->plogi_ack_list); 821 822 return pla; 823 } 824 825 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 826 struct qlt_plogi_ack_t *pla) 827 { 828 struct imm_ntfy_from_isp *iocb = &pla->iocb; 829 port_id_t port_id; 830 uint16_t loop_id; 831 fc_port_t *fcport = pla->fcport; 832 833 BUG_ON(!pla->ref_count); 834 pla->ref_count--; 835 836 if (pla->ref_count) 837 return; 838 839 ql_dbg(ql_dbg_disc, vha, 0x5089, 840 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 841 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 842 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 843 iocb->u.isp24.port_id[0], 844 le16_to_cpu(iocb->u.isp24.nport_handle), 845 iocb->u.isp24.exchange_address, iocb->ox_id); 846 847 port_id.b.domain = iocb->u.isp24.port_id[2]; 848 port_id.b.area = iocb->u.isp24.port_id[1]; 849 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 850 port_id.b.rsvd_1 = 0; 851 852 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 853 854 fcport->loop_id = loop_id; 855 fcport->d_id = port_id; 856 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 857 858 list_for_each_entry(fcport, &vha->vp_fcports, list) { 859 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 860 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 861 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 862 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 863 } 864 865 list_del(&pla->list); 866 kmem_cache_free(qla_tgt_plogi_cachep, pla); 867 } 868 869 void 870 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 871 struct fc_port *sess, enum qlt_plogi_link_t link) 872 { 873 struct imm_ntfy_from_isp *iocb = &pla->iocb; 874 /* Inc ref_count first because link might already be pointing at pla */ 875 pla->ref_count++; 876 877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 878 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 879 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 880 sess, link, sess->port_name, 881 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 882 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 883 pla->ref_count, pla, link); 884 885 if (sess->plogi_link[link]) 886 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 887 888 if (link == QLT_PLOGI_LINK_SAME_WWN) 889 pla->fcport = sess; 890 891 sess->plogi_link[link] = pla; 892 } 893 894 typedef struct { 895 /* These fields must be initialized by the caller */ 896 port_id_t id; 897 /* 898 * number of cmds dropped while we were waiting for 899 * initiator to ack LOGO initialize to 1 if LOGO is 900 * triggered by a command, otherwise, to 0 901 */ 902 int cmd_count; 903 904 /* These fields are used by callee */ 905 struct list_head list; 906 } qlt_port_logo_t; 907 908 static void 909 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 910 { 911 qlt_port_logo_t *tmp; 912 int res; 913 914 mutex_lock(&vha->vha_tgt.tgt_mutex); 915 916 list_for_each_entry(tmp, &vha->logo_list, list) { 917 if (tmp->id.b24 == logo->id.b24) { 918 tmp->cmd_count += logo->cmd_count; 919 mutex_unlock(&vha->vha_tgt.tgt_mutex); 920 return; 921 } 922 } 923 924 list_add_tail(&logo->list, &vha->logo_list); 925 926 mutex_unlock(&vha->vha_tgt.tgt_mutex); 927 928 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 929 930 mutex_lock(&vha->vha_tgt.tgt_mutex); 931 list_del(&logo->list); 932 mutex_unlock(&vha->vha_tgt.tgt_mutex); 933 934 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 935 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 936 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 937 logo->cmd_count, res); 938 } 939 940 static void qlt_free_session_done(struct work_struct *work) 941 { 942 struct fc_port *sess = container_of(work, struct fc_port, 943 free_work); 944 struct qla_tgt *tgt = sess->tgt; 945 struct scsi_qla_host *vha = sess->vha; 946 struct qla_hw_data *ha = vha->hw; 947 unsigned long flags; 948 bool logout_started = false; 949 struct event_arg ea; 950 scsi_qla_host_t *base_vha; 951 952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 953 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 954 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 955 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 956 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 957 sess->logout_on_delete, sess->keep_nport_handle, 958 sess->send_els_logo); 959 960 961 if (!IS_SW_RESV_ADDR(sess->d_id)) { 962 if (sess->send_els_logo) { 963 qlt_port_logo_t logo; 964 965 logo.id = sess->d_id; 966 logo.cmd_count = 0; 967 qlt_send_first_logo(vha, &logo); 968 } 969 970 if (sess->logout_on_delete) { 971 int rc; 972 973 rc = qla2x00_post_async_logout_work(vha, sess, NULL); 974 if (rc != QLA_SUCCESS) 975 ql_log(ql_log_warn, vha, 0xf085, 976 "Schedule logo failed sess %p rc %d\n", 977 sess, rc); 978 else 979 logout_started = true; 980 } 981 } 982 983 /* 984 * Release the target session for FC Nexus from fabric module code. 985 */ 986 if (sess->se_sess != NULL) 987 ha->tgt.tgt_ops->free_session(sess); 988 989 if (logout_started) { 990 bool traced = false; 991 992 while (!ACCESS_ONCE(sess->logout_completed)) { 993 if (!traced) { 994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 995 "%s: waiting for sess %p logout\n", 996 __func__, sess); 997 traced = true; 998 } 999 msleep(100); 1000 } 1001 1002 ql_dbg(ql_dbg_disc, vha, 0xf087, 1003 "%s: sess %p logout completed\n",__func__, sess); 1004 } 1005 1006 if (sess->logo_ack_needed) { 1007 sess->logo_ack_needed = 0; 1008 qla24xx_async_notify_ack(vha, sess, 1009 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1010 } 1011 1012 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1013 if (sess->se_sess) { 1014 sess->se_sess = NULL; 1015 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1016 tgt->sess_count--; 1017 } 1018 1019 sess->disc_state = DSC_DELETED; 1020 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1021 sess->deleted = QLA_SESS_DELETED; 1022 sess->login_retry = vha->hw->login_retry_count; 1023 1024 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1025 vha->fcport_count--; 1026 sess->login_succ = 0; 1027 } 1028 1029 if (sess->chip_reset != sess->vha->hw->chip_reset) 1030 qla2x00_clear_loop_id(sess); 1031 1032 if (sess->conflict) { 1033 sess->conflict->login_pause = 0; 1034 sess->conflict = NULL; 1035 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1036 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1037 } 1038 1039 { 1040 struct qlt_plogi_ack_t *own = 1041 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1042 struct qlt_plogi_ack_t *con = 1043 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1044 struct imm_ntfy_from_isp *iocb; 1045 1046 if (con) { 1047 iocb = &con->iocb; 1048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1049 "se_sess %p / sess %p port %8phC is gone," 1050 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1051 sess->se_sess, sess, sess->port_name, 1052 own ? "releasing own PLOGI" : "no own PLOGI pending", 1053 own ? own->ref_count : -1, 1054 iocb->u.isp24.port_name, con->ref_count); 1055 qlt_plogi_ack_unref(vha, con); 1056 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1057 } else { 1058 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1059 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1060 sess->se_sess, sess, sess->port_name, 1061 own ? "releasing own PLOGI" : 1062 "no own PLOGI pending", 1063 own ? own->ref_count : -1); 1064 } 1065 1066 if (own) { 1067 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1068 qlt_plogi_ack_unref(vha, own); 1069 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1070 } 1071 } 1072 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1073 1074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1075 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1076 sess, sess->port_name, vha->fcport_count); 1077 1078 if (tgt && (tgt->sess_count == 0)) 1079 wake_up_all(&tgt->waitQ); 1080 1081 if (vha->fcport_count == 0) 1082 wake_up_all(&vha->fcport_waitQ); 1083 1084 base_vha = pci_get_drvdata(ha->pdev); 1085 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1086 return; 1087 1088 if (!tgt || !tgt->tgt_stop) { 1089 memset(&ea, 0, sizeof(ea)); 1090 ea.event = FCME_DELETE_DONE; 1091 ea.fcport = sess; 1092 qla2x00_fcport_event_handler(vha, &ea); 1093 } 1094 } 1095 1096 /* ha->tgt.sess_lock supposed to be held on entry */ 1097 void qlt_unreg_sess(struct fc_port *sess) 1098 { 1099 struct scsi_qla_host *vha = sess->vha; 1100 1101 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1102 "%s sess %p for deletion %8phC\n", 1103 __func__, sess, sess->port_name); 1104 1105 if (sess->se_sess) 1106 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1107 1108 qla2x00_mark_device_lost(vha, sess, 1, 1); 1109 1110 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1111 sess->disc_state = DSC_DELETE_PEND; 1112 sess->last_rscn_gen = sess->rscn_gen; 1113 sess->last_login_gen = sess->login_gen; 1114 1115 INIT_WORK(&sess->free_work, qlt_free_session_done); 1116 schedule_work(&sess->free_work); 1117 } 1118 EXPORT_SYMBOL(qlt_unreg_sess); 1119 1120 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1121 { 1122 struct qla_hw_data *ha = vha->hw; 1123 struct fc_port *sess = NULL; 1124 uint16_t loop_id; 1125 int res = 0; 1126 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1127 unsigned long flags; 1128 1129 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1130 if (loop_id == 0xFFFF) { 1131 /* Global event */ 1132 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1133 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1134 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1136 } else { 1137 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1138 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1139 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1140 } 1141 1142 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1143 "Using sess for qla_tgt_reset: %p\n", sess); 1144 if (!sess) { 1145 res = -ESRCH; 1146 return res; 1147 } 1148 1149 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1150 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1151 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1152 mcmd, loop_id); 1153 1154 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1155 } 1156 1157 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1158 { 1159 if (sess->chip_reset != sess->vha->hw->chip_reset) { 1160 sess->logout_on_delete = 0; 1161 sess->logo_ack_needed = 0; 1162 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1163 sess->scan_state = 0; 1164 } 1165 } 1166 1167 /* ha->tgt.sess_lock supposed to be held on entry */ 1168 void qlt_schedule_sess_for_deletion(struct fc_port *sess, 1169 bool immediate) 1170 { 1171 struct qla_tgt *tgt = sess->tgt; 1172 1173 if (sess->disc_state == DSC_DELETE_PEND) 1174 return; 1175 1176 if (sess->disc_state == DSC_DELETED) { 1177 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1178 wake_up_all(&tgt->waitQ); 1179 if (sess->vha->fcport_count == 0) 1180 wake_up_all(&sess->vha->fcport_waitQ); 1181 1182 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1183 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1184 return; 1185 } 1186 1187 sess->disc_state = DSC_DELETE_PEND; 1188 1189 if (sess->deleted == QLA_SESS_DELETED) 1190 sess->logout_on_delete = 0; 1191 1192 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1193 qla24xx_chk_fcp_state(sess); 1194 1195 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1196 "Scheduling sess %p for deletion\n", sess); 1197 1198 schedule_work(&sess->del_work); 1199 } 1200 1201 void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess) 1202 { 1203 unsigned long flags; 1204 struct qla_hw_data *ha = sess->vha->hw; 1205 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1206 qlt_schedule_sess_for_deletion(sess, 1); 1207 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1208 } 1209 1210 /* ha->tgt.sess_lock supposed to be held on entry */ 1211 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1212 { 1213 struct fc_port *sess; 1214 scsi_qla_host_t *vha = tgt->vha; 1215 1216 list_for_each_entry(sess, &vha->vp_fcports, list) { 1217 if (sess->se_sess) 1218 qlt_schedule_sess_for_deletion(sess, 1); 1219 } 1220 1221 /* At this point tgt could be already dead */ 1222 } 1223 1224 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1225 uint16_t *loop_id) 1226 { 1227 struct qla_hw_data *ha = vha->hw; 1228 dma_addr_t gid_list_dma; 1229 struct gid_list_info *gid_list; 1230 char *id_iter; 1231 int res, rc, i; 1232 uint16_t entries; 1233 1234 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1235 &gid_list_dma, GFP_KERNEL); 1236 if (!gid_list) { 1237 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1238 "qla_target(%d): DMA Alloc failed of %u\n", 1239 vha->vp_idx, qla2x00_gid_list_size(ha)); 1240 return -ENOMEM; 1241 } 1242 1243 /* Get list of logged in devices */ 1244 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1245 if (rc != QLA_SUCCESS) { 1246 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1247 "qla_target(%d): get_id_list() failed: %x\n", 1248 vha->vp_idx, rc); 1249 res = -EBUSY; 1250 goto out_free_id_list; 1251 } 1252 1253 id_iter = (char *)gid_list; 1254 res = -ENOENT; 1255 for (i = 0; i < entries; i++) { 1256 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1257 if ((gid->al_pa == s_id[2]) && 1258 (gid->area == s_id[1]) && 1259 (gid->domain == s_id[0])) { 1260 *loop_id = le16_to_cpu(gid->loop_id); 1261 res = 0; 1262 break; 1263 } 1264 id_iter += ha->gid_list_info_size; 1265 } 1266 1267 out_free_id_list: 1268 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1269 gid_list, gid_list_dma); 1270 return res; 1271 } 1272 1273 /* 1274 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1275 * Caller must put it. 1276 */ 1277 static struct fc_port *qlt_create_sess( 1278 struct scsi_qla_host *vha, 1279 fc_port_t *fcport, 1280 bool local) 1281 { 1282 struct qla_hw_data *ha = vha->hw; 1283 struct fc_port *sess = fcport; 1284 unsigned long flags; 1285 1286 if (vha->vha_tgt.qla_tgt->tgt_stop) 1287 return NULL; 1288 1289 if (fcport->se_sess) { 1290 if (!kref_get_unless_zero(&sess->sess_kref)) { 1291 ql_dbg(ql_dbg_disc, vha, 0xffff, 1292 "%s: kref_get_unless_zero failed for %8phC\n", 1293 __func__, sess->port_name); 1294 return NULL; 1295 } 1296 return fcport; 1297 } 1298 sess->tgt = vha->vha_tgt.qla_tgt; 1299 sess->local = local; 1300 1301 /* 1302 * Under normal circumstances we want to logout from firmware when 1303 * session eventually ends and release corresponding nport handle. 1304 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1305 * code will adjust these flags as necessary. 1306 */ 1307 sess->logout_on_delete = 1; 1308 sess->keep_nport_handle = 0; 1309 sess->logout_completed = 0; 1310 1311 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1312 &fcport->port_name[0], sess) < 0) { 1313 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 1314 "(%d) %8phC check_initiator_node_acl failed\n", 1315 vha->vp_idx, fcport->port_name); 1316 return NULL; 1317 } else { 1318 kref_init(&fcport->sess_kref); 1319 /* 1320 * Take an extra reference to ->sess_kref here to handle 1321 * fc_port access across ->tgt.sess_lock reaquire. 1322 */ 1323 if (!kref_get_unless_zero(&sess->sess_kref)) { 1324 ql_dbg(ql_dbg_disc, vha, 0xffff, 1325 "%s: kref_get_unless_zero failed for %8phC\n", 1326 __func__, sess->port_name); 1327 return NULL; 1328 } 1329 1330 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1331 if (!IS_SW_RESV_ADDR(sess->d_id)) 1332 vha->vha_tgt.qla_tgt->sess_count++; 1333 1334 qlt_do_generation_tick(vha, &sess->generation); 1335 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1336 } 1337 1338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1339 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1340 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1341 vha->vha_tgt.qla_tgt->sess_count); 1342 1343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1344 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1345 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1346 vha->vp_idx, local ? "local " : "", fcport->port_name, 1347 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1348 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1349 1350 return sess; 1351 } 1352 1353 /* 1354 * max_gen - specifies maximum session generation 1355 * at which this deletion requestion is still valid 1356 */ 1357 void 1358 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1359 { 1360 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1361 struct fc_port *sess = fcport; 1362 unsigned long flags; 1363 1364 if (!vha->hw->tgt.tgt_ops) 1365 return; 1366 1367 if (!tgt) 1368 return; 1369 1370 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1371 if (tgt->tgt_stop) { 1372 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1373 return; 1374 } 1375 if (!sess->se_sess) { 1376 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1377 return; 1378 } 1379 1380 if (max_gen - sess->generation < 0) { 1381 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1383 "Ignoring stale deletion request for se_sess %p / sess %p" 1384 " for port %8phC, req_gen %d, sess_gen %d\n", 1385 sess->se_sess, sess, sess->port_name, max_gen, 1386 sess->generation); 1387 return; 1388 } 1389 1390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1391 1392 sess->local = 1; 1393 qlt_schedule_sess_for_deletion(sess, false); 1394 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1395 } 1396 1397 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1398 { 1399 struct qla_hw_data *ha = tgt->ha; 1400 unsigned long flags; 1401 int res; 1402 /* 1403 * We need to protect against race, when tgt is freed before or 1404 * inside wake_up() 1405 */ 1406 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1407 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1408 "tgt %p, sess_count=%d\n", 1409 tgt, tgt->sess_count); 1410 res = (tgt->sess_count == 0); 1411 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1412 1413 return res; 1414 } 1415 1416 /* Called by tcm_qla2xxx configfs code */ 1417 int qlt_stop_phase1(struct qla_tgt *tgt) 1418 { 1419 struct scsi_qla_host *vha = tgt->vha; 1420 struct qla_hw_data *ha = tgt->ha; 1421 unsigned long flags; 1422 1423 mutex_lock(&qla_tgt_mutex); 1424 if (!vha->fc_vport) { 1425 struct Scsi_Host *sh = vha->host; 1426 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 1427 bool npiv_vports; 1428 1429 spin_lock_irqsave(sh->host_lock, flags); 1430 npiv_vports = (fc_host->npiv_vports_inuse); 1431 spin_unlock_irqrestore(sh->host_lock, flags); 1432 1433 if (npiv_vports) { 1434 mutex_unlock(&qla_tgt_mutex); 1435 return -EPERM; 1436 } 1437 } 1438 if (tgt->tgt_stop || tgt->tgt_stopped) { 1439 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1440 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1441 mutex_unlock(&qla_tgt_mutex); 1442 return -EPERM; 1443 } 1444 1445 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1446 vha->host_no, vha); 1447 /* 1448 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1449 * Lock is needed, because we still can get an incoming packet. 1450 */ 1451 mutex_lock(&vha->vha_tgt.tgt_mutex); 1452 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1453 tgt->tgt_stop = 1; 1454 qlt_clear_tgt_db(tgt); 1455 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1456 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1457 mutex_unlock(&qla_tgt_mutex); 1458 1459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1460 "Waiting for sess works (tgt %p)", tgt); 1461 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1462 while (!list_empty(&tgt->sess_works_list)) { 1463 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1464 flush_scheduled_work(); 1465 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1466 } 1467 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1468 1469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1470 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1471 1472 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1473 1474 /* Big hammer */ 1475 if (!ha->flags.host_shutting_down && 1476 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1477 qlt_disable_vha(vha); 1478 1479 /* Wait for sessions to clear out (just in case) */ 1480 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1481 return 0; 1482 } 1483 EXPORT_SYMBOL(qlt_stop_phase1); 1484 1485 /* Called by tcm_qla2xxx configfs code */ 1486 void qlt_stop_phase2(struct qla_tgt *tgt) 1487 { 1488 struct qla_hw_data *ha = tgt->ha; 1489 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1490 unsigned long flags; 1491 1492 if (tgt->tgt_stopped) { 1493 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1494 "Already in tgt->tgt_stopped state\n"); 1495 dump_stack(); 1496 return; 1497 } 1498 1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1500 "Waiting for %d IRQ commands to complete (tgt %p)", 1501 tgt->irq_cmd_count, tgt); 1502 1503 mutex_lock(&vha->vha_tgt.tgt_mutex); 1504 spin_lock_irqsave(&ha->hardware_lock, flags); 1505 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) { 1506 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1507 udelay(2); 1508 spin_lock_irqsave(&ha->hardware_lock, flags); 1509 } 1510 tgt->tgt_stop = 0; 1511 tgt->tgt_stopped = 1; 1512 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1513 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1514 1515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished", 1516 tgt); 1517 } 1518 EXPORT_SYMBOL(qlt_stop_phase2); 1519 1520 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1521 static void qlt_release(struct qla_tgt *tgt) 1522 { 1523 scsi_qla_host_t *vha = tgt->vha; 1524 1525 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1526 qlt_stop_phase2(tgt); 1527 1528 vha->vha_tgt.qla_tgt = NULL; 1529 1530 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1531 "Release of tgt %p finished\n", tgt); 1532 1533 kfree(tgt); 1534 } 1535 1536 /* ha->hardware_lock supposed to be held on entry */ 1537 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1538 const void *param, unsigned int param_size) 1539 { 1540 struct qla_tgt_sess_work_param *prm; 1541 unsigned long flags; 1542 1543 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1544 if (!prm) { 1545 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1546 "qla_target(%d): Unable to create session " 1547 "work, command will be refused", 0); 1548 return -ENOMEM; 1549 } 1550 1551 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1552 "Scheduling work (type %d, prm %p)" 1553 " to find session for param %p (size %d, tgt %p)\n", 1554 type, prm, param, param_size, tgt); 1555 1556 prm->type = type; 1557 memcpy(&prm->tm_iocb, param, param_size); 1558 1559 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1560 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1561 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1562 1563 schedule_work(&tgt->sess_work); 1564 1565 return 0; 1566 } 1567 1568 /* 1569 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1570 */ 1571 static void qlt_send_notify_ack(struct scsi_qla_host *vha, 1572 struct imm_ntfy_from_isp *ntfy, 1573 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1574 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1575 { 1576 struct qla_hw_data *ha = vha->hw; 1577 request_t *pkt; 1578 struct nack_to_isp *nack; 1579 1580 if (!ha->flags.fw_started) 1581 return; 1582 1583 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1584 1585 /* Send marker if required */ 1586 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1587 return; 1588 1589 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 1590 if (!pkt) { 1591 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1592 "qla_target(%d): %s failed: unable to allocate " 1593 "request packet\n", vha->vp_idx, __func__); 1594 return; 1595 } 1596 1597 if (vha->vha_tgt.qla_tgt != NULL) 1598 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1599 1600 pkt->entry_type = NOTIFY_ACK_TYPE; 1601 pkt->entry_count = 1; 1602 1603 nack = (struct nack_to_isp *)pkt; 1604 nack->ox_id = ntfy->ox_id; 1605 1606 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1607 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1608 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1609 nack->u.isp24.flags = ntfy->u.isp24.flags & 1610 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1611 } 1612 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1613 nack->u.isp24.status = ntfy->u.isp24.status; 1614 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1615 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1616 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1617 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1618 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1619 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1620 nack->u.isp24.srr_reject_code = srr_reject_code; 1621 nack->u.isp24.srr_reject_code_expl = srr_explan; 1622 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1623 1624 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1625 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1626 vha->vp_idx, nack->u.isp24.status); 1627 1628 /* Memory Barrier */ 1629 wmb(); 1630 qla2x00_start_iocbs(vha, vha->req); 1631 } 1632 1633 /* 1634 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1635 */ 1636 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, 1637 struct abts_recv_from_24xx *abts, uint32_t status, 1638 bool ids_reversed) 1639 { 1640 struct qla_hw_data *ha = vha->hw; 1641 struct abts_resp_to_24xx *resp; 1642 uint32_t f_ctl; 1643 uint8_t *p; 1644 1645 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1646 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1647 ha, abts, status); 1648 1649 /* Send marker if required */ 1650 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1651 return; 1652 1653 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1654 if (!resp) { 1655 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1656 "qla_target(%d): %s failed: unable to allocate " 1657 "request packet", vha->vp_idx, __func__); 1658 return; 1659 } 1660 1661 resp->entry_type = ABTS_RESP_24XX; 1662 resp->entry_count = 1; 1663 resp->nport_handle = abts->nport_handle; 1664 resp->vp_index = vha->vp_idx; 1665 resp->sof_type = abts->sof_type; 1666 resp->exchange_address = abts->exchange_address; 1667 resp->fcp_hdr_le = abts->fcp_hdr_le; 1668 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1669 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1670 F_CTL_SEQ_INITIATIVE); 1671 p = (uint8_t *)&f_ctl; 1672 resp->fcp_hdr_le.f_ctl[0] = *p++; 1673 resp->fcp_hdr_le.f_ctl[1] = *p++; 1674 resp->fcp_hdr_le.f_ctl[2] = *p; 1675 if (ids_reversed) { 1676 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1677 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1678 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1679 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1680 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1681 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1682 } else { 1683 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1684 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1685 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1686 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1687 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1688 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1689 } 1690 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1691 if (status == FCP_TMF_CMPL) { 1692 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1693 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1694 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1695 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1696 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1697 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1698 } else { 1699 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1700 resp->payload.ba_rjt.reason_code = 1701 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1702 /* Other bytes are zero */ 1703 } 1704 1705 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1706 1707 /* Memory Barrier */ 1708 wmb(); 1709 qla2x00_start_iocbs(vha, vha->req); 1710 } 1711 1712 /* 1713 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1714 */ 1715 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1716 struct abts_resp_from_24xx_fw *entry) 1717 { 1718 struct ctio7_to_24xx *ctio; 1719 1720 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1721 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1722 /* Send marker if required */ 1723 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1724 return; 1725 1726 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1727 if (ctio == NULL) { 1728 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1729 "qla_target(%d): %s failed: unable to allocate " 1730 "request packet\n", vha->vp_idx, __func__); 1731 return; 1732 } 1733 1734 /* 1735 * We've got on entrance firmware's response on by us generated 1736 * ABTS response. So, in it ID fields are reversed. 1737 */ 1738 1739 ctio->entry_type = CTIO_TYPE7; 1740 ctio->entry_count = 1; 1741 ctio->nport_handle = entry->nport_handle; 1742 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1743 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1744 ctio->vp_index = vha->vp_idx; 1745 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1746 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1747 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1748 ctio->exchange_addr = entry->exchange_addr_to_abort; 1749 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1750 CTIO7_FLAGS_TERMINATE); 1751 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1752 1753 /* Memory Barrier */ 1754 wmb(); 1755 qla2x00_start_iocbs(vha, vha->req); 1756 1757 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, 1758 FCP_TMF_CMPL, true); 1759 } 1760 1761 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1762 { 1763 struct qla_tgt_sess_op *op; 1764 struct qla_tgt_cmd *cmd; 1765 1766 spin_lock(&vha->cmd_list_lock); 1767 1768 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1769 if (tag == op->atio.u.isp24.exchange_addr) { 1770 op->aborted = true; 1771 spin_unlock(&vha->cmd_list_lock); 1772 return 1; 1773 } 1774 } 1775 1776 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1777 if (tag == op->atio.u.isp24.exchange_addr) { 1778 op->aborted = true; 1779 spin_unlock(&vha->cmd_list_lock); 1780 return 1; 1781 } 1782 } 1783 1784 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1785 if (tag == cmd->atio.u.isp24.exchange_addr) { 1786 cmd->aborted = 1; 1787 spin_unlock(&vha->cmd_list_lock); 1788 return 1; 1789 } 1790 } 1791 1792 spin_unlock(&vha->cmd_list_lock); 1793 return 0; 1794 } 1795 1796 /* drop cmds for the given lun 1797 * XXX only looks for cmds on the port through which lun reset was recieved 1798 * XXX does not go through the list of other port (which may have cmds 1799 * for the same lun) 1800 */ 1801 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1802 uint32_t lun, uint8_t *s_id) 1803 { 1804 struct qla_tgt_sess_op *op; 1805 struct qla_tgt_cmd *cmd; 1806 uint32_t key; 1807 1808 key = sid_to_key(s_id); 1809 spin_lock(&vha->cmd_list_lock); 1810 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1811 uint32_t op_key; 1812 uint32_t op_lun; 1813 1814 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1815 op_lun = scsilun_to_int( 1816 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1817 if (op_key == key && op_lun == lun) 1818 op->aborted = true; 1819 } 1820 1821 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1822 uint32_t op_key; 1823 u64 op_lun; 1824 1825 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1826 op_lun = scsilun_to_int( 1827 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1828 if (op_key == key && op_lun == lun) 1829 op->aborted = true; 1830 } 1831 1832 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1833 uint32_t cmd_key; 1834 uint32_t cmd_lun; 1835 1836 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1837 cmd_lun = scsilun_to_int( 1838 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1839 if (cmd_key == key && cmd_lun == lun) 1840 cmd->aborted = 1; 1841 } 1842 spin_unlock(&vha->cmd_list_lock); 1843 } 1844 1845 /* ha->hardware_lock supposed to be held on entry */ 1846 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1847 struct abts_recv_from_24xx *abts, struct fc_port *sess) 1848 { 1849 struct qla_hw_data *ha = vha->hw; 1850 struct se_session *se_sess = sess->se_sess; 1851 struct qla_tgt_mgmt_cmd *mcmd; 1852 struct se_cmd *se_cmd; 1853 u32 lun = 0; 1854 int rc; 1855 bool found_lun = false; 1856 unsigned long flags; 1857 1858 spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); 1859 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) { 1860 struct qla_tgt_cmd *cmd = 1861 container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 1862 if (se_cmd->tag == abts->exchange_addr_to_abort) { 1863 lun = cmd->unpacked_lun; 1864 found_lun = true; 1865 break; 1866 } 1867 } 1868 spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); 1869 1870 /* cmd not in LIO lists, look in qla list */ 1871 if (!found_lun) { 1872 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 1873 /* send TASK_ABORT response immediately */ 1874 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false); 1875 return 0; 1876 } else { 1877 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081, 1878 "unable to find cmd in driver or LIO for tag 0x%x\n", 1879 abts->exchange_addr_to_abort); 1880 return -ENOENT; 1881 } 1882 } 1883 1884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 1885 "qla_target(%d): task abort (tag=%d)\n", 1886 vha->vp_idx, abts->exchange_addr_to_abort); 1887 1888 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 1889 if (mcmd == NULL) { 1890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 1891 "qla_target(%d): %s: Allocation of ABORT cmd failed", 1892 vha->vp_idx, __func__); 1893 return -ENOMEM; 1894 } 1895 memset(mcmd, 0, sizeof(*mcmd)); 1896 1897 mcmd->sess = sess; 1898 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 1899 mcmd->reset_count = vha->hw->chip_reset; 1900 mcmd->tmr_func = QLA_TGT_ABTS; 1901 1902 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 1903 abts->exchange_addr_to_abort); 1904 if (rc != 0) { 1905 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, 1906 "qla_target(%d): tgt_ops->handle_tmr()" 1907 " failed: %d", vha->vp_idx, rc); 1908 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1909 return -EFAULT; 1910 } 1911 1912 return 0; 1913 } 1914 1915 /* 1916 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1917 */ 1918 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1919 struct abts_recv_from_24xx *abts) 1920 { 1921 struct qla_hw_data *ha = vha->hw; 1922 struct fc_port *sess; 1923 uint32_t tag = abts->exchange_addr_to_abort; 1924 uint8_t s_id[3]; 1925 int rc; 1926 unsigned long flags; 1927 1928 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 1929 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 1930 "qla_target(%d): ABTS: Abort Sequence not " 1931 "supported\n", vha->vp_idx); 1932 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1933 return; 1934 } 1935 1936 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 1937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 1938 "qla_target(%d): ABTS: Unknown Exchange " 1939 "Address received\n", vha->vp_idx); 1940 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1941 return; 1942 } 1943 1944 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 1945 "qla_target(%d): task abort (s_id=%x:%x:%x, " 1946 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 1947 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 1948 le32_to_cpu(abts->fcp_hdr_le.parameter)); 1949 1950 s_id[0] = abts->fcp_hdr_le.s_id[2]; 1951 s_id[1] = abts->fcp_hdr_le.s_id[1]; 1952 s_id[2] = abts->fcp_hdr_le.s_id[0]; 1953 1954 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1955 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 1956 if (!sess) { 1957 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 1958 "qla_target(%d): task abort for non-existant session\n", 1959 vha->vp_idx); 1960 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 1961 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); 1962 1963 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1964 1965 if (rc != 0) { 1966 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, 1967 false); 1968 } 1969 return; 1970 } 1971 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1972 1973 1974 if (sess->deleted) { 1975 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1976 return; 1977 } 1978 1979 rc = __qlt_24xx_handle_abts(vha, abts, sess); 1980 if (rc != 0) { 1981 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 1982 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 1983 vha->vp_idx, rc); 1984 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1985 return; 1986 } 1987 } 1988 1989 /* 1990 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1991 */ 1992 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, 1993 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 1994 { 1995 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 1996 struct ctio7_to_24xx *ctio; 1997 uint16_t temp; 1998 1999 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2000 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2001 ha, atio, resp_code); 2002 2003 /* Send marker if required */ 2004 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS) 2005 return; 2006 2007 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL); 2008 if (ctio == NULL) { 2009 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2010 "qla_target(%d): %s failed: unable to allocate " 2011 "request packet\n", ha->vp_idx, __func__); 2012 return; 2013 } 2014 2015 ctio->entry_type = CTIO_TYPE7; 2016 ctio->entry_count = 1; 2017 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2018 ctio->nport_handle = mcmd->sess->loop_id; 2019 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2020 ctio->vp_index = ha->vp_idx; 2021 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2022 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2023 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2024 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2025 ctio->u.status1.flags = (atio->u.isp24.attr << 9) | 2026 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS); 2027 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2028 ctio->u.status1.ox_id = cpu_to_le16(temp); 2029 ctio->u.status1.scsi_status = 2030 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2031 ctio->u.status1.response_len = cpu_to_le16(8); 2032 ctio->u.status1.sense_data[0] = resp_code; 2033 2034 /* Memory Barrier */ 2035 wmb(); 2036 qla2x00_start_iocbs(ha, ha->req); 2037 } 2038 2039 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2040 { 2041 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2042 } 2043 EXPORT_SYMBOL(qlt_free_mcmd); 2044 2045 /* 2046 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2047 * reacquire 2048 */ 2049 void qlt_send_resp_ctio(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 2050 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2051 { 2052 struct atio_from_isp *atio = &cmd->atio; 2053 struct ctio7_to_24xx *ctio; 2054 uint16_t temp; 2055 2056 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2057 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2058 "sense_key=%02x, asc=%02x, ascq=%02x", 2059 vha, atio, scsi_status, sense_key, asc, ascq); 2060 2061 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2062 if (!ctio) { 2063 ql_dbg(ql_dbg_async, vha, 0x3067, 2064 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2065 vha->host_no, __func__); 2066 goto out; 2067 } 2068 2069 ctio->entry_type = CTIO_TYPE7; 2070 ctio->entry_count = 1; 2071 ctio->handle = QLA_TGT_SKIP_HANDLE; 2072 ctio->nport_handle = cmd->sess->loop_id; 2073 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2074 ctio->vp_index = vha->vp_idx; 2075 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2076 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2077 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2078 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2079 ctio->u.status1.flags = (atio->u.isp24.attr << 9) | 2080 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS); 2081 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2082 ctio->u.status1.ox_id = cpu_to_le16(temp); 2083 ctio->u.status1.scsi_status = 2084 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2085 ctio->u.status1.response_len = cpu_to_le16(18); 2086 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2087 2088 if (ctio->u.status1.residual != 0) 2089 ctio->u.status1.scsi_status |= 2090 cpu_to_le16(SS_RESIDUAL_UNDER); 2091 2092 /* Response code and sense key */ 2093 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)), 2094 (&ctio->u.status1.sense_data)[0]); 2095 /* Additional sense length */ 2096 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]); 2097 /* ASC and ASCQ */ 2098 put_unaligned_le32(((asc << 24) | (ascq << 16)), 2099 (&ctio->u.status1.sense_data)[3]); 2100 2101 /* Memory Barrier */ 2102 wmb(); 2103 2104 qla2x00_start_iocbs(vha, vha->req); 2105 out: 2106 return; 2107 } 2108 2109 /* callback from target fabric module code */ 2110 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2111 { 2112 struct scsi_qla_host *vha = mcmd->sess->vha; 2113 struct qla_hw_data *ha = vha->hw; 2114 unsigned long flags; 2115 2116 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2117 "TM response mcmd (%p) status %#x state %#x", 2118 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2119 2120 spin_lock_irqsave(&ha->hardware_lock, flags); 2121 2122 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) { 2123 /* 2124 * Either the port is not online or this request was from 2125 * previous life, just abort the processing. 2126 */ 2127 ql_dbg(ql_dbg_async, vha, 0xe100, 2128 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2129 vha->flags.online, qla2x00_reset_active(vha), 2130 mcmd->reset_count, ha->chip_reset); 2131 ha->tgt.tgt_ops->free_mcmd(mcmd); 2132 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2133 return; 2134 } 2135 2136 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2137 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2138 ELS_LOGO || 2139 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2140 ELS_PRLO || 2141 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2142 ELS_TPRLO) { 2143 ql_dbg(ql_dbg_disc, vha, 0xffff, 2144 "TM response logo %phC status %#x state %#x", 2145 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2146 mcmd->flags); 2147 qlt_schedule_sess_for_deletion_lock(mcmd->sess); 2148 } else { 2149 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, 2150 0, 0, 0, 0, 0, 0); 2151 } 2152 } else { 2153 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) 2154 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, 2155 mcmd->fc_tm_rsp, false); 2156 else 2157 qlt_24xx_send_task_mgmt_ctio(vha, mcmd, 2158 mcmd->fc_tm_rsp); 2159 } 2160 /* 2161 * Make the callback for ->free_mcmd() to queue_work() and invoke 2162 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2163 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2164 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2165 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2166 * qlt_xmit_tm_rsp() returns here.. 2167 */ 2168 ha->tgt.tgt_ops->free_mcmd(mcmd); 2169 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2170 } 2171 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2172 2173 /* No locks */ 2174 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2175 { 2176 struct qla_tgt_cmd *cmd = prm->cmd; 2177 2178 BUG_ON(cmd->sg_cnt == 0); 2179 2180 prm->sg = (struct scatterlist *)cmd->sg; 2181 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg, 2182 cmd->sg_cnt, cmd->dma_data_direction); 2183 if (unlikely(prm->seg_cnt == 0)) 2184 goto out_err; 2185 2186 prm->cmd->sg_mapped = 1; 2187 2188 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2189 /* 2190 * If greater than four sg entries then we need to allocate 2191 * the continuation entries 2192 */ 2193 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd) 2194 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2195 prm->tgt->datasegs_per_cmd, 2196 prm->tgt->datasegs_per_cont); 2197 } else { 2198 /* DIF */ 2199 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2200 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2201 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2202 prm->tot_dsds = prm->seg_cnt; 2203 } else 2204 prm->tot_dsds = prm->seg_cnt; 2205 2206 if (cmd->prot_sg_cnt) { 2207 prm->prot_sg = cmd->prot_sg; 2208 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev, 2209 cmd->prot_sg, cmd->prot_sg_cnt, 2210 cmd->dma_data_direction); 2211 if (unlikely(prm->prot_seg_cnt == 0)) 2212 goto out_err; 2213 2214 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2215 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2216 /* Dif Bundling not support here */ 2217 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2218 cmd->blk_sz); 2219 prm->tot_dsds += prm->prot_seg_cnt; 2220 } else 2221 prm->tot_dsds += prm->prot_seg_cnt; 2222 } 2223 } 2224 2225 return 0; 2226 2227 out_err: 2228 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, 2229 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2230 0, prm->cmd->sg_cnt); 2231 return -1; 2232 } 2233 2234 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2235 { 2236 struct qla_hw_data *ha = vha->hw; 2237 2238 if (!cmd->sg_mapped) 2239 return; 2240 2241 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 2242 cmd->sg_mapped = 0; 2243 2244 if (cmd->prot_sg_cnt) 2245 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 2246 cmd->dma_data_direction); 2247 2248 if (cmd->ctx_dsd_alloced) 2249 qla2x00_clean_dsd_pool(ha, NULL, cmd); 2250 2251 if (cmd->ctx) 2252 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2253 } 2254 2255 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha, 2256 uint32_t req_cnt) 2257 { 2258 uint32_t cnt, cnt_in; 2259 2260 if (vha->req->cnt < (req_cnt + 2)) { 2261 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out); 2262 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in); 2263 2264 if (vha->req->ring_index < cnt) 2265 vha->req->cnt = cnt - vha->req->ring_index; 2266 else 2267 vha->req->cnt = vha->req->length - 2268 (vha->req->ring_index - cnt); 2269 2270 if (unlikely(vha->req->cnt < (req_cnt + 2))) { 2271 ql_dbg(ql_dbg_io, vha, 0x305a, 2272 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n", 2273 vha->vp_idx, vha->req->ring_index, 2274 vha->req->cnt, req_cnt, cnt, cnt_in, 2275 vha->req->length); 2276 return -EAGAIN; 2277 } 2278 } 2279 2280 vha->req->cnt -= req_cnt; 2281 2282 return 0; 2283 } 2284 2285 /* 2286 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2287 */ 2288 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha) 2289 { 2290 /* Adjust ring index. */ 2291 vha->req->ring_index++; 2292 if (vha->req->ring_index == vha->req->length) { 2293 vha->req->ring_index = 0; 2294 vha->req->ring_ptr = vha->req->ring; 2295 } else { 2296 vha->req->ring_ptr++; 2297 } 2298 return (cont_entry_t *)vha->req->ring_ptr; 2299 } 2300 2301 /* ha->hardware_lock supposed to be held on entry */ 2302 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha) 2303 { 2304 struct qla_hw_data *ha = vha->hw; 2305 uint32_t h; 2306 2307 h = ha->tgt.current_handle; 2308 /* always increment cmd handle */ 2309 do { 2310 ++h; 2311 if (h > DEFAULT_OUTSTANDING_COMMANDS) 2312 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */ 2313 if (h == ha->tgt.current_handle) { 2314 ql_dbg(ql_dbg_io, vha, 0x305b, 2315 "qla_target(%d): Ran out of " 2316 "empty cmd slots in ha %p\n", vha->vp_idx, ha); 2317 h = QLA_TGT_NULL_HANDLE; 2318 break; 2319 } 2320 } while ((h == QLA_TGT_NULL_HANDLE) || 2321 (h == QLA_TGT_SKIP_HANDLE) || 2322 (ha->tgt.cmds[h-1] != NULL)); 2323 2324 if (h != QLA_TGT_NULL_HANDLE) 2325 ha->tgt.current_handle = h; 2326 2327 return h; 2328 } 2329 2330 /* ha->hardware_lock supposed to be held on entry */ 2331 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, 2332 struct scsi_qla_host *vha) 2333 { 2334 uint32_t h; 2335 struct ctio7_to_24xx *pkt; 2336 struct qla_hw_data *ha = vha->hw; 2337 struct atio_from_isp *atio = &prm->cmd->atio; 2338 uint16_t temp; 2339 2340 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr; 2341 prm->pkt = pkt; 2342 memset(pkt, 0, sizeof(*pkt)); 2343 2344 pkt->entry_type = CTIO_TYPE7; 2345 pkt->entry_count = (uint8_t)prm->req_cnt; 2346 pkt->vp_index = vha->vp_idx; 2347 2348 h = qlt_make_handle(vha); 2349 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2350 /* 2351 * CTIO type 7 from the firmware doesn't provide a way to 2352 * know the initiator's LOOP ID, hence we can't find 2353 * the session and, so, the command. 2354 */ 2355 return -EAGAIN; 2356 } else 2357 ha->tgt.cmds[h - 1] = prm->cmd; 2358 2359 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 2360 pkt->nport_handle = prm->cmd->loop_id; 2361 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2362 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2363 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2364 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2365 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2366 pkt->u.status0.flags |= (atio->u.isp24.attr << 9); 2367 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2368 pkt->u.status0.ox_id = cpu_to_le16(temp); 2369 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2370 2371 return 0; 2372 } 2373 2374 /* 2375 * ha->hardware_lock supposed to be held on entry. We have already made sure 2376 * that there is sufficient amount of request entries to not drop it. 2377 */ 2378 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm, 2379 struct scsi_qla_host *vha) 2380 { 2381 int cnt; 2382 uint32_t *dword_ptr; 2383 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 2384 2385 /* Build continuation packets */ 2386 while (prm->seg_cnt > 0) { 2387 cont_a64_entry_t *cont_pkt64 = 2388 (cont_a64_entry_t *)qlt_get_req_pkt(vha); 2389 2390 /* 2391 * Make sure that from cont_pkt64 none of 2392 * 64-bit specific fields used for 32-bit 2393 * addressing. Cast to (cont_entry_t *) for 2394 * that. 2395 */ 2396 2397 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2398 2399 cont_pkt64->entry_count = 1; 2400 cont_pkt64->sys_define = 0; 2401 2402 if (enable_64bit_addressing) { 2403 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2404 dword_ptr = 2405 (uint32_t *)&cont_pkt64->dseg_0_address; 2406 } else { 2407 cont_pkt64->entry_type = CONTINUE_TYPE; 2408 dword_ptr = 2409 (uint32_t *)&((cont_entry_t *) 2410 cont_pkt64)->dseg_0_address; 2411 } 2412 2413 /* Load continuation entry data segments */ 2414 for (cnt = 0; 2415 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt; 2416 cnt++, prm->seg_cnt--) { 2417 *dword_ptr++ = 2418 cpu_to_le32(pci_dma_lo32 2419 (sg_dma_address(prm->sg))); 2420 if (enable_64bit_addressing) { 2421 *dword_ptr++ = 2422 cpu_to_le32(pci_dma_hi32 2423 (sg_dma_address 2424 (prm->sg))); 2425 } 2426 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2427 2428 prm->sg = sg_next(prm->sg); 2429 } 2430 } 2431 } 2432 2433 /* 2434 * ha->hardware_lock supposed to be held on entry. We have already made sure 2435 * that there is sufficient amount of request entries to not drop it. 2436 */ 2437 static void qlt_load_data_segments(struct qla_tgt_prm *prm, 2438 struct scsi_qla_host *vha) 2439 { 2440 int cnt; 2441 uint32_t *dword_ptr; 2442 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 2443 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2444 2445 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2446 2447 /* Setup packet address segment pointer */ 2448 dword_ptr = pkt24->u.status0.dseg_0_address; 2449 2450 /* Set total data segment count */ 2451 if (prm->seg_cnt) 2452 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2453 2454 if (prm->seg_cnt == 0) { 2455 /* No data transfer */ 2456 *dword_ptr++ = 0; 2457 *dword_ptr = 0; 2458 return; 2459 } 2460 2461 /* If scatter gather */ 2462 2463 /* Load command entry data segments */ 2464 for (cnt = 0; 2465 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt; 2466 cnt++, prm->seg_cnt--) { 2467 *dword_ptr++ = 2468 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 2469 if (enable_64bit_addressing) { 2470 *dword_ptr++ = 2471 cpu_to_le32(pci_dma_hi32( 2472 sg_dma_address(prm->sg))); 2473 } 2474 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2475 2476 prm->sg = sg_next(prm->sg); 2477 } 2478 2479 qlt_load_cont_data_segments(prm, vha); 2480 } 2481 2482 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2483 { 2484 return cmd->bufflen > 0; 2485 } 2486 2487 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2488 { 2489 struct qla_tgt_cmd *cmd; 2490 struct scsi_qla_host *vha; 2491 2492 /* asc 0x10=dif error */ 2493 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2494 cmd = prm->cmd; 2495 vha = cmd->vha; 2496 /* ASCQ */ 2497 switch (prm->sense_buffer[13]) { 2498 case 1: 2499 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 2500 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2501 "se_cmd=%p tag[%x]", 2502 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2503 cmd->atio.u.isp24.exchange_addr); 2504 break; 2505 case 2: 2506 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 2507 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2508 "se_cmd=%p tag[%x]", 2509 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2510 cmd->atio.u.isp24.exchange_addr); 2511 break; 2512 case 3: 2513 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 2514 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2515 "se_cmd=%p tag[%x]", 2516 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2517 cmd->atio.u.isp24.exchange_addr); 2518 break; 2519 default: 2520 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 2521 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2522 "se_cmd=%p tag[%x]", 2523 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2524 cmd->atio.u.isp24.exchange_addr); 2525 break; 2526 } 2527 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xffff, cmd->cdb, 16); 2528 } 2529 } 2530 2531 /* 2532 * Called without ha->hardware_lock held 2533 */ 2534 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2535 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2536 uint32_t *full_req_cnt) 2537 { 2538 struct qla_tgt *tgt = cmd->tgt; 2539 struct scsi_qla_host *vha = tgt->vha; 2540 struct qla_hw_data *ha = vha->hw; 2541 struct se_cmd *se_cmd = &cmd->se_cmd; 2542 2543 prm->cmd = cmd; 2544 prm->tgt = tgt; 2545 prm->rq_result = scsi_status; 2546 prm->sense_buffer = &cmd->sense_buffer[0]; 2547 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2548 prm->sg = NULL; 2549 prm->seg_cnt = -1; 2550 prm->req_cnt = 1; 2551 prm->add_status_pkt = 0; 2552 2553 /* Send marker if required */ 2554 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 2555 return -EFAULT; 2556 2557 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2558 if (qlt_pci_map_calc_cnt(prm) != 0) 2559 return -EAGAIN; 2560 } 2561 2562 *full_req_cnt = prm->req_cnt; 2563 2564 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2565 prm->residual = se_cmd->residual_count; 2566 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c, 2567 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2568 prm->residual, se_cmd->tag, 2569 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2570 cmd->bufflen, prm->rq_result); 2571 prm->rq_result |= SS_RESIDUAL_UNDER; 2572 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2573 prm->residual = se_cmd->residual_count; 2574 ql_dbg(ql_dbg_io, vha, 0x305d, 2575 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2576 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2577 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2578 prm->rq_result |= SS_RESIDUAL_OVER; 2579 } 2580 2581 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2582 /* 2583 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2584 * ignored in *xmit_response() below 2585 */ 2586 if (qlt_has_data(cmd)) { 2587 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2588 (IS_FWI2_CAPABLE(ha) && 2589 (prm->rq_result != 0))) { 2590 prm->add_status_pkt = 1; 2591 (*full_req_cnt)++; 2592 } 2593 } 2594 } 2595 2596 return 0; 2597 } 2598 2599 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha, 2600 struct qla_tgt_cmd *cmd, int sending_sense) 2601 { 2602 if (ha->tgt.enable_class_2) 2603 return 0; 2604 2605 if (sending_sense) 2606 return cmd->conf_compl_supported; 2607 else 2608 return ha->tgt.enable_explicit_conf && 2609 cmd->conf_compl_supported; 2610 } 2611 2612 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2613 struct qla_tgt_prm *prm) 2614 { 2615 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2616 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2617 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2618 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) { 2619 ctio->u.status0.flags |= cpu_to_le16( 2620 CTIO7_FLAGS_EXPLICIT_CONFORM | 2621 CTIO7_FLAGS_CONFORM_REQ); 2622 } 2623 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2624 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2625 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2626 int i; 2627 2628 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) { 2629 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2630 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, 2631 "Skipping EXPLICIT_CONFORM and " 2632 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2633 "non GOOD status\n"); 2634 goto skip_explict_conf; 2635 } 2636 ctio->u.status1.flags |= cpu_to_le16( 2637 CTIO7_FLAGS_EXPLICIT_CONFORM | 2638 CTIO7_FLAGS_CONFORM_REQ); 2639 } 2640 skip_explict_conf: 2641 ctio->u.status1.flags &= 2642 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2643 ctio->u.status1.flags |= 2644 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2645 ctio->u.status1.scsi_status |= 2646 cpu_to_le16(SS_SENSE_LEN_VALID); 2647 ctio->u.status1.sense_length = 2648 cpu_to_le16(prm->sense_buffer_len); 2649 for (i = 0; i < prm->sense_buffer_len/4; i++) 2650 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2651 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2652 2653 qlt_print_dif_err(prm); 2654 2655 } else { 2656 ctio->u.status1.flags &= 2657 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2658 ctio->u.status1.flags |= 2659 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2660 ctio->u.status1.sense_length = 0; 2661 memset(ctio->u.status1.sense_data, 0, 2662 sizeof(ctio->u.status1.sense_data)); 2663 } 2664 2665 /* Sense with len > 24, is it possible ??? */ 2666 } 2667 2668 static inline int 2669 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2670 { 2671 switch (se_cmd->prot_op) { 2672 case TARGET_PROT_DOUT_INSERT: 2673 case TARGET_PROT_DIN_STRIP: 2674 if (ql2xenablehba_err_chk >= 1) 2675 return 1; 2676 break; 2677 case TARGET_PROT_DOUT_PASS: 2678 case TARGET_PROT_DIN_PASS: 2679 if (ql2xenablehba_err_chk >= 2) 2680 return 1; 2681 break; 2682 case TARGET_PROT_DIN_INSERT: 2683 case TARGET_PROT_DOUT_STRIP: 2684 return 1; 2685 default: 2686 break; 2687 } 2688 return 0; 2689 } 2690 2691 static inline int 2692 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2693 { 2694 switch (se_cmd->prot_op) { 2695 case TARGET_PROT_DIN_INSERT: 2696 case TARGET_PROT_DOUT_INSERT: 2697 case TARGET_PROT_DIN_STRIP: 2698 case TARGET_PROT_DOUT_STRIP: 2699 case TARGET_PROT_DIN_PASS: 2700 case TARGET_PROT_DOUT_PASS: 2701 return 1; 2702 default: 2703 return 0; 2704 } 2705 return 0; 2706 } 2707 2708 /* 2709 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2710 */ 2711 static void 2712 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2713 uint16_t *pfw_prot_opts) 2714 { 2715 struct se_cmd *se_cmd = &cmd->se_cmd; 2716 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2717 scsi_qla_host_t *vha = cmd->tgt->vha; 2718 struct qla_hw_data *ha = vha->hw; 2719 uint32_t t32 = 0; 2720 2721 /* 2722 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2723 * have been immplemented by TCM, before AppTag is avail. 2724 * Look for modesense_handlers[] 2725 */ 2726 ctx->app_tag = 0; 2727 ctx->app_tag_mask[0] = 0x0; 2728 ctx->app_tag_mask[1] = 0x0; 2729 2730 if (IS_PI_UNINIT_CAPABLE(ha)) { 2731 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2732 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2733 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2734 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2735 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2736 } 2737 2738 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2739 2740 switch (se_cmd->prot_type) { 2741 case TARGET_DIF_TYPE0_PROT: 2742 /* 2743 * No check for ql2xenablehba_err_chk, as it 2744 * would be an I/O error if hba tag generation 2745 * is not done. 2746 */ 2747 ctx->ref_tag = cpu_to_le32(lba); 2748 /* enable ALL bytes of the ref tag */ 2749 ctx->ref_tag_mask[0] = 0xff; 2750 ctx->ref_tag_mask[1] = 0xff; 2751 ctx->ref_tag_mask[2] = 0xff; 2752 ctx->ref_tag_mask[3] = 0xff; 2753 break; 2754 case TARGET_DIF_TYPE1_PROT: 2755 /* 2756 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2757 * REF tag, and 16 bit app tag. 2758 */ 2759 ctx->ref_tag = cpu_to_le32(lba); 2760 if (!qla_tgt_ref_mask_check(se_cmd) || 2761 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2762 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2763 break; 2764 } 2765 /* enable ALL bytes of the ref tag */ 2766 ctx->ref_tag_mask[0] = 0xff; 2767 ctx->ref_tag_mask[1] = 0xff; 2768 ctx->ref_tag_mask[2] = 0xff; 2769 ctx->ref_tag_mask[3] = 0xff; 2770 break; 2771 case TARGET_DIF_TYPE2_PROT: 2772 /* 2773 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2774 * tag has to match LBA in CDB + N 2775 */ 2776 ctx->ref_tag = cpu_to_le32(lba); 2777 if (!qla_tgt_ref_mask_check(se_cmd) || 2778 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2779 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2780 break; 2781 } 2782 /* enable ALL bytes of the ref tag */ 2783 ctx->ref_tag_mask[0] = 0xff; 2784 ctx->ref_tag_mask[1] = 0xff; 2785 ctx->ref_tag_mask[2] = 0xff; 2786 ctx->ref_tag_mask[3] = 0xff; 2787 break; 2788 case TARGET_DIF_TYPE3_PROT: 2789 /* For TYPE 3 protection: 16 bit GUARD only */ 2790 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2791 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2792 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2793 break; 2794 } 2795 } 2796 2797 static inline int 2798 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha) 2799 { 2800 uint32_t *cur_dsd; 2801 uint32_t transfer_length = 0; 2802 uint32_t data_bytes; 2803 uint32_t dif_bytes; 2804 uint8_t bundling = 1; 2805 uint8_t *clr_ptr; 2806 struct crc_context *crc_ctx_pkt = NULL; 2807 struct qla_hw_data *ha; 2808 struct ctio_crc2_to_fw *pkt; 2809 dma_addr_t crc_ctx_dma; 2810 uint16_t fw_prot_opts = 0; 2811 struct qla_tgt_cmd *cmd = prm->cmd; 2812 struct se_cmd *se_cmd = &cmd->se_cmd; 2813 uint32_t h; 2814 struct atio_from_isp *atio = &prm->cmd->atio; 2815 struct qla_tc_param tc; 2816 uint16_t t16; 2817 2818 ha = vha->hw; 2819 2820 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr; 2821 prm->pkt = pkt; 2822 memset(pkt, 0, sizeof(*pkt)); 2823 2824 ql_dbg(ql_dbg_tgt, vha, 0xe071, 2825 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2826 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2827 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2828 2829 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2830 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2831 bundling = 0; 2832 2833 /* Compute dif len and adjust data len to incude protection */ 2834 data_bytes = cmd->bufflen; 2835 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2836 2837 switch (se_cmd->prot_op) { 2838 case TARGET_PROT_DIN_INSERT: 2839 case TARGET_PROT_DOUT_STRIP: 2840 transfer_length = data_bytes; 2841 if (cmd->prot_sg_cnt) 2842 data_bytes += dif_bytes; 2843 break; 2844 case TARGET_PROT_DIN_STRIP: 2845 case TARGET_PROT_DOUT_INSERT: 2846 case TARGET_PROT_DIN_PASS: 2847 case TARGET_PROT_DOUT_PASS: 2848 transfer_length = data_bytes + dif_bytes; 2849 break; 2850 default: 2851 BUG(); 2852 break; 2853 } 2854 2855 if (!qlt_hba_err_chk_enabled(se_cmd)) 2856 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2857 /* HBA error checking enabled */ 2858 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2859 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2860 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2861 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 2862 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2863 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2864 } 2865 2866 switch (se_cmd->prot_op) { 2867 case TARGET_PROT_DIN_INSERT: 2868 case TARGET_PROT_DOUT_INSERT: 2869 fw_prot_opts |= PO_MODE_DIF_INSERT; 2870 break; 2871 case TARGET_PROT_DIN_STRIP: 2872 case TARGET_PROT_DOUT_STRIP: 2873 fw_prot_opts |= PO_MODE_DIF_REMOVE; 2874 break; 2875 case TARGET_PROT_DIN_PASS: 2876 case TARGET_PROT_DOUT_PASS: 2877 fw_prot_opts |= PO_MODE_DIF_PASS; 2878 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 2879 break; 2880 default:/* Normal Request */ 2881 fw_prot_opts |= PO_MODE_DIF_PASS; 2882 break; 2883 } 2884 2885 /* ---- PKT ---- */ 2886 /* Update entry type to indicate Command Type CRC_2 IOCB */ 2887 pkt->entry_type = CTIO_CRC2; 2888 pkt->entry_count = 1; 2889 pkt->vp_index = vha->vp_idx; 2890 2891 h = qlt_make_handle(vha); 2892 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2893 /* 2894 * CTIO type 7 from the firmware doesn't provide a way to 2895 * know the initiator's LOOP ID, hence we can't find 2896 * the session and, so, the command. 2897 */ 2898 return -EAGAIN; 2899 } else 2900 ha->tgt.cmds[h-1] = prm->cmd; 2901 2902 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 2903 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2904 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2905 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2906 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2907 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2908 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2909 2910 /* silence compile warning */ 2911 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2912 pkt->ox_id = cpu_to_le16(t16); 2913 2914 t16 = (atio->u.isp24.attr << 9); 2915 pkt->flags |= cpu_to_le16(t16); 2916 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 2917 2918 /* Set transfer direction */ 2919 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2920 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 2921 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2922 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 2923 2924 pkt->dseg_count = prm->tot_dsds; 2925 /* Fibre channel byte count */ 2926 pkt->transfer_length = cpu_to_le32(transfer_length); 2927 2928 /* ----- CRC context -------- */ 2929 2930 /* Allocate CRC context from global pool */ 2931 crc_ctx_pkt = cmd->ctx = 2932 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 2933 2934 if (!crc_ctx_pkt) 2935 goto crc_queuing_error; 2936 2937 /* Zero out CTX area. */ 2938 clr_ptr = (uint8_t *)crc_ctx_pkt; 2939 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 2940 2941 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 2942 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 2943 2944 /* Set handle */ 2945 crc_ctx_pkt->handle = pkt->handle; 2946 2947 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 2948 2949 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 2950 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 2951 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 2952 2953 if (!bundling) { 2954 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 2955 } else { 2956 /* 2957 * Configure Bundling if we need to fetch interlaving 2958 * protection PCI accesses 2959 */ 2960 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 2961 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 2962 crc_ctx_pkt->u.bundling.dseg_count = 2963 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 2964 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 2965 } 2966 2967 /* Finish the common fields of CRC pkt */ 2968 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 2969 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 2970 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 2971 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 2972 2973 memset((uint8_t *)&tc, 0 , sizeof(tc)); 2974 tc.vha = vha; 2975 tc.blk_sz = cmd->blk_sz; 2976 tc.bufflen = cmd->bufflen; 2977 tc.sg = cmd->sg; 2978 tc.prot_sg = cmd->prot_sg; 2979 tc.ctx = crc_ctx_pkt; 2980 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 2981 2982 /* Walks data segments */ 2983 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 2984 2985 if (!bundling && prm->prot_seg_cnt) { 2986 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 2987 prm->tot_dsds, &tc)) 2988 goto crc_queuing_error; 2989 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 2990 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 2991 goto crc_queuing_error; 2992 2993 if (bundling && prm->prot_seg_cnt) { 2994 /* Walks dif segments */ 2995 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 2996 2997 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 2998 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 2999 prm->prot_seg_cnt, &tc)) 3000 goto crc_queuing_error; 3001 } 3002 return QLA_SUCCESS; 3003 3004 crc_queuing_error: 3005 /* Cleanup will be performed by the caller */ 3006 vha->hw->tgt.cmds[h - 1] = NULL; 3007 3008 return QLA_FUNCTION_FAILED; 3009 } 3010 3011 /* 3012 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3013 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3014 */ 3015 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3016 uint8_t scsi_status) 3017 { 3018 struct scsi_qla_host *vha = cmd->vha; 3019 struct qla_hw_data *ha = vha->hw; 3020 struct ctio7_to_24xx *pkt; 3021 struct qla_tgt_prm prm; 3022 uint32_t full_req_cnt = 0; 3023 unsigned long flags = 0; 3024 int res; 3025 3026 spin_lock_irqsave(&ha->hardware_lock, flags); 3027 if (cmd->sess && cmd->sess->deleted) { 3028 cmd->state = QLA_TGT_STATE_PROCESSED; 3029 if (cmd->sess->logout_completed) 3030 /* no need to terminate. FW already freed exchange. */ 3031 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3032 else 3033 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 3034 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3035 return 0; 3036 } 3037 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3038 3039 memset(&prm, 0, sizeof(prm)); 3040 3041 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, 3042 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n", 3043 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3044 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3045 &cmd->se_cmd); 3046 3047 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3048 &full_req_cnt); 3049 if (unlikely(res != 0)) { 3050 return res; 3051 } 3052 3053 spin_lock_irqsave(&ha->hardware_lock, flags); 3054 3055 if (xmit_type == QLA_TGT_XMIT_STATUS) 3056 vha->tgt_counters.core_qla_snd_status++; 3057 else 3058 vha->tgt_counters.core_qla_que_buf++; 3059 3060 if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) { 3061 /* 3062 * Either the port is not online or this request was from 3063 * previous life, just abort the processing. 3064 */ 3065 cmd->state = QLA_TGT_STATE_PROCESSED; 3066 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3067 ql_dbg(ql_dbg_async, vha, 0xe101, 3068 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3069 vha->flags.online, qla2x00_reset_active(vha), 3070 cmd->reset_count, ha->chip_reset); 3071 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3072 return 0; 3073 } 3074 3075 /* Does F/W have an IOCBs for this request */ 3076 res = qlt_check_reserve_free_req(vha, full_req_cnt); 3077 if (unlikely(res)) 3078 goto out_unmap_unlock; 3079 3080 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3081 res = qlt_build_ctio_crc2_pkt(&prm, vha); 3082 else 3083 res = qlt_24xx_build_ctio_pkt(&prm, vha); 3084 if (unlikely(res != 0)) { 3085 vha->req->cnt += full_req_cnt; 3086 goto out_unmap_unlock; 3087 } 3088 3089 pkt = (struct ctio7_to_24xx *)prm.pkt; 3090 3091 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3092 pkt->u.status0.flags |= 3093 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3094 CTIO7_FLAGS_STATUS_MODE_0); 3095 3096 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3097 qlt_load_data_segments(&prm, vha); 3098 3099 if (prm.add_status_pkt == 0) { 3100 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3101 pkt->u.status0.scsi_status = 3102 cpu_to_le16(prm.rq_result); 3103 pkt->u.status0.residual = 3104 cpu_to_le32(prm.residual); 3105 pkt->u.status0.flags |= cpu_to_le16( 3106 CTIO7_FLAGS_SEND_STATUS); 3107 if (qlt_need_explicit_conf(ha, cmd, 0)) { 3108 pkt->u.status0.flags |= 3109 cpu_to_le16( 3110 CTIO7_FLAGS_EXPLICIT_CONFORM | 3111 CTIO7_FLAGS_CONFORM_REQ); 3112 } 3113 } 3114 3115 } else { 3116 /* 3117 * We have already made sure that there is sufficient 3118 * amount of request entries to not drop HW lock in 3119 * req_pkt(). 3120 */ 3121 struct ctio7_to_24xx *ctio = 3122 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha); 3123 3124 ql_dbg(ql_dbg_io, vha, 0x305e, 3125 "Building additional status packet 0x%p.\n", 3126 ctio); 3127 3128 /* 3129 * T10Dif: ctio_crc2_to_fw overlay ontop of 3130 * ctio7_to_24xx 3131 */ 3132 memcpy(ctio, pkt, sizeof(*ctio)); 3133 /* reset back to CTIO7 */ 3134 ctio->entry_count = 1; 3135 ctio->entry_type = CTIO_TYPE7; 3136 ctio->dseg_count = 0; 3137 ctio->u.status1.flags &= ~cpu_to_le16( 3138 CTIO7_FLAGS_DATA_IN); 3139 3140 /* Real finish is ctio_m1's finish */ 3141 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3142 pkt->u.status0.flags |= cpu_to_le16( 3143 CTIO7_FLAGS_DONT_RET_CTIO); 3144 3145 /* qlt_24xx_init_ctio_to_isp will correct 3146 * all neccessary fields that's part of CTIO7. 3147 * There should be no residual of CTIO-CRC2 data. 3148 */ 3149 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3150 &prm); 3151 pr_debug("Status CTIO7: %p\n", ctio); 3152 } 3153 } else 3154 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3155 3156 3157 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3158 cmd->cmd_sent_to_fw = 1; 3159 3160 /* Memory Barrier */ 3161 wmb(); 3162 qla2x00_start_iocbs(vha, vha->req); 3163 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3164 3165 return 0; 3166 3167 out_unmap_unlock: 3168 qlt_unmap_sg(vha, cmd); 3169 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3170 3171 return res; 3172 } 3173 EXPORT_SYMBOL(qlt_xmit_response); 3174 3175 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3176 { 3177 struct ctio7_to_24xx *pkt; 3178 struct scsi_qla_host *vha = cmd->vha; 3179 struct qla_hw_data *ha = vha->hw; 3180 struct qla_tgt *tgt = cmd->tgt; 3181 struct qla_tgt_prm prm; 3182 unsigned long flags; 3183 int res = 0; 3184 3185 memset(&prm, 0, sizeof(prm)); 3186 prm.cmd = cmd; 3187 prm.tgt = tgt; 3188 prm.sg = NULL; 3189 prm.req_cnt = 1; 3190 3191 /* Send marker if required */ 3192 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 3193 return -EIO; 3194 3195 /* Calculate number of entries and segments required */ 3196 if (qlt_pci_map_calc_cnt(&prm) != 0) 3197 return -EAGAIN; 3198 3199 spin_lock_irqsave(&ha->hardware_lock, flags); 3200 3201 if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) || 3202 (cmd->sess && cmd->sess->deleted)) { 3203 /* 3204 * Either the port is not online or this request was from 3205 * previous life, just abort the processing. 3206 */ 3207 cmd->state = QLA_TGT_STATE_NEED_DATA; 3208 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3209 ql_dbg(ql_dbg_async, vha, 0xe102, 3210 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3211 vha->flags.online, qla2x00_reset_active(vha), 3212 cmd->reset_count, ha->chip_reset); 3213 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3214 return 0; 3215 } 3216 3217 /* Does F/W have an IOCBs for this request */ 3218 res = qlt_check_reserve_free_req(vha, prm.req_cnt); 3219 if (res != 0) 3220 goto out_unlock_free_unmap; 3221 if (cmd->se_cmd.prot_op) 3222 res = qlt_build_ctio_crc2_pkt(&prm, vha); 3223 else 3224 res = qlt_24xx_build_ctio_pkt(&prm, vha); 3225 3226 if (unlikely(res != 0)) { 3227 vha->req->cnt += prm.req_cnt; 3228 goto out_unlock_free_unmap; 3229 } 3230 3231 pkt = (struct ctio7_to_24xx *)prm.pkt; 3232 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3233 CTIO7_FLAGS_STATUS_MODE_0); 3234 3235 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3236 qlt_load_data_segments(&prm, vha); 3237 3238 cmd->state = QLA_TGT_STATE_NEED_DATA; 3239 cmd->cmd_sent_to_fw = 1; 3240 3241 /* Memory Barrier */ 3242 wmb(); 3243 qla2x00_start_iocbs(vha, vha->req); 3244 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3245 3246 return res; 3247 3248 out_unlock_free_unmap: 3249 qlt_unmap_sg(vha, cmd); 3250 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3251 3252 return res; 3253 } 3254 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3255 3256 3257 /* 3258 * it is assumed either hardware_lock or qpair lock is held. 3259 */ 3260 static void 3261 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd, 3262 struct ctio_crc_from_fw *sts) 3263 { 3264 uint8_t *ap = &sts->actual_dif[0]; 3265 uint8_t *ep = &sts->expected_dif[0]; 3266 uint64_t lba = cmd->se_cmd.t_task_lba; 3267 uint8_t scsi_status, sense_key, asc, ascq; 3268 unsigned long flags; 3269 3270 cmd->trc_flags |= TRC_DIF_ERR; 3271 3272 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3273 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3274 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3275 3276 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3277 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3278 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3279 3280 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3281 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3282 3283 scsi_status = sense_key = asc = ascq = 0; 3284 3285 /* check appl tag */ 3286 if (cmd->e_app_tag != cmd->a_app_tag) { 3287 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 3288 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] " 3289 "Ref[%x|%x], App[%x|%x], " 3290 "Guard [%x|%x] cmd=%p ox_id[%04x]", 3291 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3292 cmd->a_ref_tag, cmd->e_ref_tag, 3293 cmd->a_app_tag, cmd->e_app_tag, 3294 cmd->a_guard, cmd->e_guard, 3295 cmd, cmd->atio.u.isp24.fcp_hdr.ox_id); 3296 3297 cmd->dif_err_code = DIF_ERR_APP; 3298 scsi_status = SAM_STAT_CHECK_CONDITION; 3299 sense_key = ABORTED_COMMAND; 3300 asc = 0x10; 3301 ascq = 0x2; 3302 } 3303 3304 /* check ref tag */ 3305 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3306 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 3307 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] " 3308 "Ref[%x|%x], App[%x|%x], " 3309 "Guard[%x|%x] cmd=%p ox_id[%04x] ", 3310 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3311 cmd->a_ref_tag, cmd->e_ref_tag, 3312 cmd->a_app_tag, cmd->e_app_tag, 3313 cmd->a_guard, cmd->e_guard, 3314 cmd, cmd->atio.u.isp24.fcp_hdr.ox_id); 3315 3316 cmd->dif_err_code = DIF_ERR_REF; 3317 scsi_status = SAM_STAT_CHECK_CONDITION; 3318 sense_key = ABORTED_COMMAND; 3319 asc = 0x10; 3320 ascq = 0x3; 3321 goto out; 3322 } 3323 3324 /* check guard */ 3325 if (cmd->e_guard != cmd->a_guard) { 3326 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 3327 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] " 3328 "Ref[%x|%x], App[%x|%x], " 3329 "Guard [%x|%x] cmd=%p ox_id[%04x]", 3330 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3331 cmd->a_ref_tag, cmd->e_ref_tag, 3332 cmd->a_app_tag, cmd->e_app_tag, 3333 cmd->a_guard, cmd->e_guard, 3334 cmd, cmd->atio.u.isp24.fcp_hdr.ox_id); 3335 cmd->dif_err_code = DIF_ERR_GRD; 3336 scsi_status = SAM_STAT_CHECK_CONDITION; 3337 sense_key = ABORTED_COMMAND; 3338 asc = 0x10; 3339 ascq = 0x1; 3340 } 3341 out: 3342 switch (cmd->state) { 3343 case QLA_TGT_STATE_NEED_DATA: 3344 /* handle_data will load DIF error code */ 3345 cmd->state = QLA_TGT_STATE_DATA_IN; 3346 vha->hw->tgt.tgt_ops->handle_data(cmd); 3347 break; 3348 default: 3349 spin_lock_irqsave(&cmd->cmd_lock, flags); 3350 if (cmd->aborted) { 3351 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3352 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3353 break; 3354 } 3355 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3356 3357 qlt_send_resp_ctio(vha, cmd, scsi_status, sense_key, asc, ascq); 3358 /* assume scsi status gets out on the wire. 3359 * Will not wait for completion. 3360 */ 3361 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3362 break; 3363 } 3364 } 3365 3366 /* If hardware_lock held on entry, might drop it, then reaquire */ 3367 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3368 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3369 struct imm_ntfy_from_isp *ntfy) 3370 { 3371 struct nack_to_isp *nack; 3372 struct qla_hw_data *ha = vha->hw; 3373 request_t *pkt; 3374 int ret = 0; 3375 3376 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3377 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3378 3379 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3380 if (pkt == NULL) { 3381 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3382 "qla_target(%d): %s failed: unable to allocate " 3383 "request packet\n", vha->vp_idx, __func__); 3384 return -ENOMEM; 3385 } 3386 3387 pkt->entry_type = NOTIFY_ACK_TYPE; 3388 pkt->entry_count = 1; 3389 pkt->handle = QLA_TGT_SKIP_HANDLE; 3390 3391 nack = (struct nack_to_isp *)pkt; 3392 nack->ox_id = ntfy->ox_id; 3393 3394 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3395 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3396 nack->u.isp24.flags = ntfy->u.isp24.flags & 3397 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3398 } 3399 3400 /* terminate */ 3401 nack->u.isp24.flags |= 3402 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3403 3404 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3405 nack->u.isp24.status = ntfy->u.isp24.status; 3406 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3407 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3408 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3409 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3410 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3411 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3412 3413 qla2x00_start_iocbs(vha, vha->req); 3414 return ret; 3415 } 3416 3417 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3418 struct imm_ntfy_from_isp *imm, int ha_locked) 3419 { 3420 unsigned long flags = 0; 3421 int rc; 3422 3423 if (qlt_issue_marker(vha, ha_locked) < 0) 3424 return; 3425 3426 if (ha_locked) { 3427 rc = __qlt_send_term_imm_notif(vha, imm); 3428 3429 #if 0 /* Todo */ 3430 if (rc == -ENOMEM) 3431 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3432 #else 3433 if (rc) { 3434 } 3435 #endif 3436 goto done; 3437 } 3438 3439 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3440 rc = __qlt_send_term_imm_notif(vha, imm); 3441 3442 #if 0 /* Todo */ 3443 if (rc == -ENOMEM) 3444 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3445 #endif 3446 3447 done: 3448 if (!ha_locked) 3449 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3450 } 3451 3452 /* If hardware_lock held on entry, might drop it, then reaquire */ 3453 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3454 static int __qlt_send_term_exchange(struct scsi_qla_host *vha, 3455 struct qla_tgt_cmd *cmd, 3456 struct atio_from_isp *atio) 3457 { 3458 struct ctio7_to_24xx *ctio24; 3459 struct qla_hw_data *ha = vha->hw; 3460 request_t *pkt; 3461 int ret = 0; 3462 uint16_t temp; 3463 3464 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3465 3466 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 3467 if (pkt == NULL) { 3468 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3469 "qla_target(%d): %s failed: unable to allocate " 3470 "request packet\n", vha->vp_idx, __func__); 3471 return -ENOMEM; 3472 } 3473 3474 if (cmd != NULL) { 3475 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3476 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3477 "qla_target(%d): Terminating cmd %p with " 3478 "incorrect state %d\n", vha->vp_idx, cmd, 3479 cmd->state); 3480 } else 3481 ret = 1; 3482 } 3483 3484 vha->tgt_counters.num_term_xchg_sent++; 3485 pkt->entry_count = 1; 3486 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3487 3488 ctio24 = (struct ctio7_to_24xx *)pkt; 3489 ctio24->entry_type = CTIO_TYPE7; 3490 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3491 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3492 ctio24->vp_index = vha->vp_idx; 3493 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3494 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3495 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3496 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3497 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 3498 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 3499 CTIO7_FLAGS_TERMINATE); 3500 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3501 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3502 3503 /* Most likely, it isn't needed */ 3504 ctio24->u.status1.residual = get_unaligned((uint32_t *) 3505 &atio->u.isp24.fcp_cmnd.add_cdb[ 3506 atio->u.isp24.fcp_cmnd.add_cdb_len]); 3507 if (ctio24->u.status1.residual != 0) 3508 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 3509 3510 /* Memory Barrier */ 3511 wmb(); 3512 qla2x00_start_iocbs(vha, vha->req); 3513 return ret; 3514 } 3515 3516 static void qlt_send_term_exchange(struct scsi_qla_host *vha, 3517 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3518 int ul_abort) 3519 { 3520 unsigned long flags = 0; 3521 int rc; 3522 3523 if (qlt_issue_marker(vha, ha_locked) < 0) 3524 return; 3525 3526 if (ha_locked) { 3527 rc = __qlt_send_term_exchange(vha, cmd, atio); 3528 if (rc == -ENOMEM) 3529 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3530 goto done; 3531 } 3532 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3533 rc = __qlt_send_term_exchange(vha, cmd, atio); 3534 if (rc == -ENOMEM) 3535 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3536 3537 done: 3538 if (cmd && !ul_abort && !cmd->aborted) { 3539 if (cmd->sg_mapped) 3540 qlt_unmap_sg(vha, cmd); 3541 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3542 } 3543 3544 if (!ha_locked) 3545 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3546 3547 return; 3548 } 3549 3550 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3551 { 3552 struct list_head free_list; 3553 struct qla_tgt_cmd *cmd, *tcmd; 3554 3555 vha->hw->tgt.leak_exchg_thresh_hold = 3556 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3557 3558 cmd = tcmd = NULL; 3559 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3560 INIT_LIST_HEAD(&free_list); 3561 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3562 3563 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3564 list_del(&cmd->cmd_list); 3565 /* This cmd was never sent to TCM. There is no need 3566 * to schedule free or call free_cmd 3567 */ 3568 qlt_free_cmd(cmd); 3569 vha->hw->tgt.num_qfull_cmds_alloc--; 3570 } 3571 } 3572 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3573 } 3574 3575 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3576 { 3577 uint32_t total_leaked; 3578 3579 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3580 3581 if (vha->hw->tgt.leak_exchg_thresh_hold && 3582 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3583 3584 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3585 "Chip reset due to exchange starvation: %d/%d.\n", 3586 total_leaked, vha->hw->cur_fw_xcb_count); 3587 3588 if (IS_P3P_TYPE(vha->hw)) 3589 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3590 else 3591 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3592 qla2xxx_wake_dpc(vha); 3593 } 3594 3595 } 3596 3597 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3598 { 3599 struct qla_tgt *tgt = cmd->tgt; 3600 struct scsi_qla_host *vha = tgt->vha; 3601 struct se_cmd *se_cmd = &cmd->se_cmd; 3602 unsigned long flags; 3603 3604 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3605 "qla_target(%d): terminating exchange for aborted cmd=%p " 3606 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3607 se_cmd->tag); 3608 3609 spin_lock_irqsave(&cmd->cmd_lock, flags); 3610 if (cmd->aborted) { 3611 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3612 /* 3613 * It's normal to see 2 calls in this path: 3614 * 1) XFER Rdy completion + CMD_T_ABORT 3615 * 2) TCM TMR - drain_state_list 3616 */ 3617 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 3618 "multiple abort. %p transport_state %x, t_state %x," 3619 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state, 3620 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags); 3621 return EIO; 3622 } 3623 cmd->aborted = 1; 3624 cmd->trc_flags |= TRC_ABORT; 3625 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3626 3627 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1); 3628 return 0; 3629 } 3630 EXPORT_SYMBOL(qlt_abort_cmd); 3631 3632 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3633 { 3634 struct fc_port *sess = cmd->sess; 3635 3636 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3637 "%s: se_cmd[%p] ox_id %04x\n", 3638 __func__, &cmd->se_cmd, 3639 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3640 3641 BUG_ON(cmd->cmd_in_wq); 3642 3643 if (cmd->sg_mapped) 3644 qlt_unmap_sg(cmd->vha, cmd); 3645 3646 if (!cmd->q_full) 3647 qlt_decr_num_pend_cmds(cmd->vha); 3648 3649 BUG_ON(cmd->sg_mapped); 3650 cmd->jiffies_at_free = get_jiffies_64(); 3651 if (unlikely(cmd->free_sg)) 3652 kfree(cmd->sg); 3653 3654 if (!sess || !sess->se_sess) { 3655 WARN_ON(1); 3656 return; 3657 } 3658 cmd->jiffies_at_free = get_jiffies_64(); 3659 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3660 } 3661 EXPORT_SYMBOL(qlt_free_cmd); 3662 3663 /* 3664 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3665 */ 3666 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, 3667 struct qla_tgt_cmd *cmd, uint32_t status) 3668 { 3669 int term = 0; 3670 3671 if (cmd->se_cmd.prot_op) 3672 ql_dbg(ql_dbg_tgt_dif, vha, 0xffff, 3673 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3674 "se_cmd=%p tag[%x] op %#x/%s", 3675 cmd->lba, cmd->lba, 3676 cmd->num_blks, &cmd->se_cmd, 3677 cmd->atio.u.isp24.exchange_addr, 3678 cmd->se_cmd.prot_op, 3679 prot_op_str(cmd->se_cmd.prot_op)); 3680 3681 if (ctio != NULL) { 3682 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3683 term = !(c->flags & 3684 cpu_to_le16(OF_TERM_EXCH)); 3685 } else 3686 term = 1; 3687 3688 if (term) 3689 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 3690 3691 return term; 3692 } 3693 3694 /* ha->hardware_lock supposed to be held on entry */ 3695 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha, 3696 uint32_t handle) 3697 { 3698 struct qla_hw_data *ha = vha->hw; 3699 3700 handle--; 3701 if (ha->tgt.cmds[handle] != NULL) { 3702 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle]; 3703 ha->tgt.cmds[handle] = NULL; 3704 return cmd; 3705 } else 3706 return NULL; 3707 } 3708 3709 /* ha->hardware_lock supposed to be held on entry */ 3710 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3711 uint32_t handle, void *ctio) 3712 { 3713 struct qla_tgt_cmd *cmd = NULL; 3714 3715 /* Clear out internal marks */ 3716 handle &= ~(CTIO_COMPLETION_HANDLE_MARK | 3717 CTIO_INTERMEDIATE_HANDLE_MARK); 3718 3719 if (handle != QLA_TGT_NULL_HANDLE) { 3720 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) 3721 return NULL; 3722 3723 /* handle-1 is actually used */ 3724 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) { 3725 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3726 "qla_target(%d): Wrong handle %x received\n", 3727 vha->vp_idx, handle); 3728 return NULL; 3729 } 3730 cmd = qlt_get_cmd(vha, handle); 3731 if (unlikely(cmd == NULL)) { 3732 ql_dbg(ql_dbg_tgt, vha, 0xe053, 3733 "qla_target(%d): Suspicious: unable to " 3734 "find the command with handle %x\n", vha->vp_idx, 3735 handle); 3736 return NULL; 3737 } 3738 } else if (ctio != NULL) { 3739 /* We can't get loop ID from CTIO7 */ 3740 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3741 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3742 "support NULL handles\n", vha->vp_idx); 3743 return NULL; 3744 } 3745 3746 return cmd; 3747 } 3748 3749 /* hardware_lock should be held by caller. */ 3750 static void 3751 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3752 { 3753 struct qla_hw_data *ha = vha->hw; 3754 uint32_t handle; 3755 3756 if (cmd->sg_mapped) 3757 qlt_unmap_sg(vha, cmd); 3758 3759 handle = qlt_make_handle(vha); 3760 3761 /* TODO: fix debug message type and ids. */ 3762 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3763 ql_dbg(ql_dbg_io, vha, 0xff00, 3764 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle); 3765 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3766 cmd->write_data_transferred = 0; 3767 cmd->state = QLA_TGT_STATE_DATA_IN; 3768 3769 ql_dbg(ql_dbg_io, vha, 0xff01, 3770 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle); 3771 3772 ha->tgt.tgt_ops->handle_data(cmd); 3773 return; 3774 } else { 3775 ql_dbg(ql_dbg_io, vha, 0xff03, 3776 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle, 3777 cmd->state); 3778 dump_stack(); 3779 } 3780 3781 cmd->trc_flags |= TRC_FLUSH; 3782 ha->tgt.tgt_ops->free_cmd(cmd); 3783 } 3784 3785 void 3786 qlt_host_reset_handler(struct qla_hw_data *ha) 3787 { 3788 struct qla_tgt_cmd *cmd; 3789 unsigned long flags; 3790 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 3791 scsi_qla_host_t *vha = NULL; 3792 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt; 3793 uint32_t i; 3794 3795 if (!base_vha->hw->tgt.tgt_ops) 3796 return; 3797 3798 if (!tgt || qla_ini_mode_enabled(base_vha)) { 3799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003, 3800 "Target mode disabled\n"); 3801 return; 3802 } 3803 3804 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10, 3805 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n", 3806 base_vha->dpc_flags); 3807 3808 spin_lock_irqsave(&ha->hardware_lock, flags); 3809 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) { 3810 cmd = qlt_get_cmd(base_vha, i); 3811 if (!cmd) 3812 continue; 3813 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */ 3814 vha = cmd->vha; 3815 qlt_abort_cmd_on_host_reset(vha, cmd); 3816 } 3817 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3818 } 3819 3820 3821 /* 3822 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3823 */ 3824 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, 3825 uint32_t status, void *ctio) 3826 { 3827 struct qla_hw_data *ha = vha->hw; 3828 struct se_cmd *se_cmd; 3829 struct qla_tgt_cmd *cmd; 3830 3831 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3832 /* That could happen only in case of an error/reset/abort */ 3833 if (status != CTIO_SUCCESS) { 3834 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3835 "Intermediate CTIO received" 3836 " (status %x)\n", status); 3837 } 3838 return; 3839 } 3840 3841 cmd = qlt_ctio_to_cmd(vha, handle, ctio); 3842 if (cmd == NULL) 3843 return; 3844 3845 se_cmd = &cmd->se_cmd; 3846 cmd->cmd_sent_to_fw = 0; 3847 3848 qlt_unmap_sg(vha, cmd); 3849 3850 if (unlikely(status != CTIO_SUCCESS)) { 3851 switch (status & 0xFFFF) { 3852 case CTIO_LIP_RESET: 3853 case CTIO_TARGET_RESET: 3854 case CTIO_ABORTED: 3855 /* driver request abort via Terminate exchange */ 3856 case CTIO_TIMEOUT: 3857 case CTIO_INVALID_RX_ID: 3858 /* They are OK */ 3859 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3860 "qla_target(%d): CTIO with " 3861 "status %#x received, state %x, se_cmd %p, " 3862 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3863 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3864 status, cmd->state, se_cmd); 3865 break; 3866 3867 case CTIO_PORT_LOGGED_OUT: 3868 case CTIO_PORT_UNAVAILABLE: 3869 { 3870 int logged_out = 3871 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3872 3873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3874 "qla_target(%d): CTIO with %s status %x " 3875 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3876 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3877 status, cmd->state, se_cmd); 3878 3879 if (logged_out && cmd->sess) { 3880 /* 3881 * Session is already logged out, but we need 3882 * to notify initiator, who's not aware of this 3883 */ 3884 cmd->sess->logout_on_delete = 0; 3885 cmd->sess->send_els_logo = 1; 3886 ql_dbg(ql_dbg_disc, vha, 0xffff, 3887 "%s %d %8phC post del sess\n", 3888 __func__, __LINE__, cmd->sess->port_name); 3889 3890 qlt_schedule_sess_for_deletion_lock(cmd->sess); 3891 } 3892 break; 3893 } 3894 case CTIO_DIF_ERROR: { 3895 struct ctio_crc_from_fw *crc = 3896 (struct ctio_crc_from_fw *)ctio; 3897 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3898 "qla_target(%d): CTIO with DIF_ERROR status %x " 3899 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3900 "expect_dif[0x%llx]\n", 3901 vha->vp_idx, status, cmd->state, se_cmd, 3902 *((u64 *)&crc->actual_dif[0]), 3903 *((u64 *)&crc->expected_dif[0])); 3904 3905 qlt_handle_dif_error(vha, cmd, ctio); 3906 return; 3907 } 3908 default: 3909 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3910 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3911 vha->vp_idx, status, cmd->state, se_cmd); 3912 break; 3913 } 3914 3915 3916 /* "cmd->aborted" means 3917 * cmd is already aborted/terminated, we don't 3918 * need to terminate again. The exchange is already 3919 * cleaned up/freed at FW level. Just cleanup at driver 3920 * level. 3921 */ 3922 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 3923 (!cmd->aborted)) { 3924 cmd->trc_flags |= TRC_CTIO_ERR; 3925 if (qlt_term_ctio_exchange(vha, ctio, cmd, status)) 3926 return; 3927 } 3928 } 3929 3930 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3931 cmd->trc_flags |= TRC_CTIO_DONE; 3932 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3933 cmd->state = QLA_TGT_STATE_DATA_IN; 3934 3935 if (status == CTIO_SUCCESS) 3936 cmd->write_data_transferred = 1; 3937 3938 ha->tgt.tgt_ops->handle_data(cmd); 3939 return; 3940 } else if (cmd->aborted) { 3941 cmd->trc_flags |= TRC_CTIO_ABORTED; 3942 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 3943 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 3944 } else { 3945 cmd->trc_flags |= TRC_CTIO_STRANGE; 3946 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 3947 "qla_target(%d): A command in state (%d) should " 3948 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 3949 } 3950 3951 if (unlikely(status != CTIO_SUCCESS) && 3952 !cmd->aborted) { 3953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 3954 dump_stack(); 3955 } 3956 3957 ha->tgt.tgt_ops->free_cmd(cmd); 3958 } 3959 3960 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 3961 uint8_t task_codes) 3962 { 3963 int fcp_task_attr; 3964 3965 switch (task_codes) { 3966 case ATIO_SIMPLE_QUEUE: 3967 fcp_task_attr = TCM_SIMPLE_TAG; 3968 break; 3969 case ATIO_HEAD_OF_QUEUE: 3970 fcp_task_attr = TCM_HEAD_TAG; 3971 break; 3972 case ATIO_ORDERED_QUEUE: 3973 fcp_task_attr = TCM_ORDERED_TAG; 3974 break; 3975 case ATIO_ACA_QUEUE: 3976 fcp_task_attr = TCM_ACA_TAG; 3977 break; 3978 case ATIO_UNTAGGED: 3979 fcp_task_attr = TCM_SIMPLE_TAG; 3980 break; 3981 default: 3982 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 3983 "qla_target: unknown task code %x, use ORDERED instead\n", 3984 task_codes); 3985 fcp_task_attr = TCM_ORDERED_TAG; 3986 break; 3987 } 3988 3989 return fcp_task_attr; 3990 } 3991 3992 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 3993 uint8_t *); 3994 /* 3995 * Process context for I/O path into tcm_qla2xxx code 3996 */ 3997 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 3998 { 3999 scsi_qla_host_t *vha = cmd->vha; 4000 struct qla_hw_data *ha = vha->hw; 4001 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4002 struct fc_port *sess = cmd->sess; 4003 struct atio_from_isp *atio = &cmd->atio; 4004 unsigned char *cdb; 4005 unsigned long flags; 4006 uint32_t data_length; 4007 int ret, fcp_task_attr, data_dir, bidi = 0; 4008 4009 cmd->cmd_in_wq = 0; 4010 cmd->trc_flags |= TRC_DO_WORK; 4011 if (tgt->tgt_stop) 4012 goto out_term; 4013 4014 if (cmd->aborted) { 4015 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4016 "cmd with tag %u is aborted\n", 4017 cmd->atio.u.isp24.exchange_addr); 4018 goto out_term; 4019 } 4020 4021 spin_lock_init(&cmd->cmd_lock); 4022 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4023 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4024 cmd->unpacked_lun = scsilun_to_int( 4025 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4026 4027 if (atio->u.isp24.fcp_cmnd.rddata && 4028 atio->u.isp24.fcp_cmnd.wrdata) { 4029 bidi = 1; 4030 data_dir = DMA_TO_DEVICE; 4031 } else if (atio->u.isp24.fcp_cmnd.rddata) 4032 data_dir = DMA_FROM_DEVICE; 4033 else if (atio->u.isp24.fcp_cmnd.wrdata) 4034 data_dir = DMA_TO_DEVICE; 4035 else 4036 data_dir = DMA_NONE; 4037 4038 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4039 atio->u.isp24.fcp_cmnd.task_attr); 4040 data_length = be32_to_cpu(get_unaligned((uint32_t *) 4041 &atio->u.isp24.fcp_cmnd.add_cdb[ 4042 atio->u.isp24.fcp_cmnd.add_cdb_len])); 4043 4044 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4045 fcp_task_attr, data_dir, bidi); 4046 if (ret != 0) 4047 goto out_term; 4048 /* 4049 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 4050 */ 4051 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4052 ha->tgt.tgt_ops->put_sess(sess); 4053 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4054 return; 4055 4056 out_term: 4057 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4058 /* 4059 * cmd has not sent to target yet, so pass NULL as the second 4060 * argument to qlt_send_term_exchange() and free the memory here. 4061 */ 4062 cmd->trc_flags |= TRC_DO_WORK_ERR; 4063 spin_lock_irqsave(&ha->hardware_lock, flags); 4064 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0); 4065 4066 qlt_decr_num_pend_cmds(vha); 4067 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 4068 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4069 4070 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4071 ha->tgt.tgt_ops->put_sess(sess); 4072 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4073 } 4074 4075 static void qlt_do_work(struct work_struct *work) 4076 { 4077 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4078 scsi_qla_host_t *vha = cmd->vha; 4079 unsigned long flags; 4080 4081 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4082 list_del(&cmd->cmd_list); 4083 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4084 4085 __qlt_do_work(cmd); 4086 } 4087 4088 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4089 struct fc_port *sess, 4090 struct atio_from_isp *atio) 4091 { 4092 struct se_session *se_sess = sess->se_sess; 4093 struct qla_tgt_cmd *cmd; 4094 int tag; 4095 4096 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 4097 if (tag < 0) 4098 return NULL; 4099 4100 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4101 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4102 4103 memcpy(&cmd->atio, atio, sizeof(*atio)); 4104 cmd->state = QLA_TGT_STATE_NEW; 4105 cmd->tgt = vha->vha_tgt.qla_tgt; 4106 qlt_incr_num_pend_cmds(vha); 4107 cmd->vha = vha; 4108 cmd->se_cmd.map_tag = tag; 4109 cmd->sess = sess; 4110 cmd->loop_id = sess->loop_id; 4111 cmd->conf_compl_supported = sess->conf_compl_supported; 4112 4113 cmd->trc_flags = 0; 4114 cmd->jiffies_at_alloc = get_jiffies_64(); 4115 4116 cmd->reset_count = vha->hw->chip_reset; 4117 4118 return cmd; 4119 } 4120 4121 static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *, 4122 uint16_t); 4123 4124 static void qlt_create_sess_from_atio(struct work_struct *work) 4125 { 4126 struct qla_tgt_sess_op *op = container_of(work, 4127 struct qla_tgt_sess_op, work); 4128 scsi_qla_host_t *vha = op->vha; 4129 struct qla_hw_data *ha = vha->hw; 4130 struct fc_port *sess; 4131 struct qla_tgt_cmd *cmd; 4132 unsigned long flags; 4133 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id; 4134 4135 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4136 list_del(&op->cmd_list); 4137 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4138 4139 if (op->aborted) { 4140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083, 4141 "sess_op with tag %u is aborted\n", 4142 op->atio.u.isp24.exchange_addr); 4143 goto out_term; 4144 } 4145 4146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, 4147 "qla_target(%d): Unable to find wwn login" 4148 " (s_id %x:%x:%x), trying to create it manually\n", 4149 vha->vp_idx, s_id[0], s_id[1], s_id[2]); 4150 4151 if (op->atio.u.raw.entry_count > 1) { 4152 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, 4153 "Dropping multy entry atio %p\n", &op->atio); 4154 goto out_term; 4155 } 4156 4157 sess = qlt_make_local_sess(vha, s_id); 4158 /* sess has an extra creation ref. */ 4159 4160 if (!sess) 4161 goto out_term; 4162 /* 4163 * Now obtain a pre-allocated session tag using the original op->atio 4164 * packet header, and dispatch into __qlt_do_work() using the existing 4165 * process context. 4166 */ 4167 cmd = qlt_get_tag(vha, sess, &op->atio); 4168 if (!cmd) { 4169 spin_lock_irqsave(&ha->hardware_lock, flags); 4170 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY); 4171 ha->tgt.tgt_ops->put_sess(sess); 4172 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4173 kfree(op); 4174 return; 4175 } 4176 4177 /* 4178 * __qlt_do_work() will call qlt_put_sess() to release 4179 * the extra reference taken above by qlt_make_local_sess() 4180 */ 4181 __qlt_do_work(cmd); 4182 kfree(op); 4183 return; 4184 out_term: 4185 spin_lock_irqsave(&ha->hardware_lock, flags); 4186 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0); 4187 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4188 kfree(op); 4189 } 4190 4191 /* ha->hardware_lock supposed to be held on entry */ 4192 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4193 struct atio_from_isp *atio) 4194 { 4195 struct qla_hw_data *ha = vha->hw; 4196 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4197 struct fc_port *sess; 4198 struct qla_tgt_cmd *cmd; 4199 unsigned long flags; 4200 4201 if (unlikely(tgt->tgt_stop)) { 4202 ql_dbg(ql_dbg_io, vha, 0x3061, 4203 "New command while device %p is shutting down\n", tgt); 4204 return -EFAULT; 4205 } 4206 4207 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4208 if (unlikely(!sess)) { 4209 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op), 4210 GFP_ATOMIC); 4211 if (!op) 4212 return -ENOMEM; 4213 4214 memcpy(&op->atio, atio, sizeof(*atio)); 4215 op->vha = vha; 4216 4217 spin_lock(&vha->cmd_list_lock); 4218 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list); 4219 spin_unlock(&vha->cmd_list_lock); 4220 4221 INIT_WORK(&op->work, qlt_create_sess_from_atio); 4222 queue_work(qla_tgt_wq, &op->work); 4223 return 0; 4224 } 4225 4226 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4227 * session deletion, but it's still in sess_del_work wq */ 4228 if (sess->deleted) { 4229 ql_dbg(ql_dbg_io, vha, 0x3061, 4230 "New command while old session %p is being deleted\n", 4231 sess); 4232 return -EFAULT; 4233 } 4234 4235 /* 4236 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4237 */ 4238 if (!kref_get_unless_zero(&sess->sess_kref)) { 4239 ql_dbg(ql_dbg_tgt, vha, 0xffff, 4240 "%s: kref_get fail, %8phC oxid %x \n", 4241 __func__, sess->port_name, 4242 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4243 return -EFAULT; 4244 } 4245 4246 cmd = qlt_get_tag(vha, sess, atio); 4247 if (!cmd) { 4248 ql_dbg(ql_dbg_io, vha, 0x3062, 4249 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4250 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4251 ha->tgt.tgt_ops->put_sess(sess); 4252 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4253 return -ENOMEM; 4254 } 4255 4256 cmd->cmd_in_wq = 1; 4257 cmd->trc_flags |= TRC_NEW_CMD; 4258 cmd->se_cmd.cpuid = ha->msix_count ? 4259 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND; 4260 4261 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4262 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4263 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4264 4265 INIT_WORK(&cmd->work, qlt_do_work); 4266 if (ha->msix_count) { 4267 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4268 queue_work_on(smp_processor_id(), qla_tgt_wq, 4269 &cmd->work); 4270 else 4271 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4272 &cmd->work); 4273 } else { 4274 queue_work(qla_tgt_wq, &cmd->work); 4275 } 4276 return 0; 4277 4278 } 4279 4280 /* ha->hardware_lock supposed to be held on entry */ 4281 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4282 int fn, void *iocb, int flags) 4283 { 4284 struct scsi_qla_host *vha = sess->vha; 4285 struct qla_hw_data *ha = vha->hw; 4286 struct qla_tgt_mgmt_cmd *mcmd; 4287 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4288 int res; 4289 4290 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4291 if (!mcmd) { 4292 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4293 "qla_target(%d): Allocation of management " 4294 "command failed, some commands and their data could " 4295 "leak\n", vha->vp_idx); 4296 return -ENOMEM; 4297 } 4298 memset(mcmd, 0, sizeof(*mcmd)); 4299 mcmd->sess = sess; 4300 4301 if (iocb) { 4302 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4303 sizeof(mcmd->orig_iocb.imm_ntfy)); 4304 } 4305 mcmd->tmr_func = fn; 4306 mcmd->flags = flags; 4307 mcmd->reset_count = vha->hw->chip_reset; 4308 4309 switch (fn) { 4310 case QLA_TGT_LUN_RESET: 4311 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4312 break; 4313 } 4314 4315 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0); 4316 if (res != 0) { 4317 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, 4318 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", 4319 sess->vha->vp_idx, res); 4320 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4321 return -EFAULT; 4322 } 4323 4324 return 0; 4325 } 4326 4327 /* ha->hardware_lock supposed to be held on entry */ 4328 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4329 { 4330 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4331 struct qla_hw_data *ha = vha->hw; 4332 struct qla_tgt *tgt; 4333 struct fc_port *sess; 4334 uint32_t lun, unpacked_lun; 4335 int fn; 4336 unsigned long flags; 4337 4338 tgt = vha->vha_tgt.qla_tgt; 4339 4340 lun = a->u.isp24.fcp_cmnd.lun; 4341 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4342 4343 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4344 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4345 a->u.isp24.fcp_hdr.s_id); 4346 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4347 4348 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 4349 4350 if (!sess) { 4351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, 4352 "qla_target(%d): task mgmt fn 0x%x for " 4353 "non-existant session\n", vha->vp_idx, fn); 4354 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, 4355 sizeof(struct atio_from_isp)); 4356 } 4357 4358 if (sess->deleted) 4359 return -EFAULT; 4360 4361 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4362 } 4363 4364 /* ha->hardware_lock supposed to be held on entry */ 4365 static int __qlt_abort_task(struct scsi_qla_host *vha, 4366 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4367 { 4368 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4369 struct qla_hw_data *ha = vha->hw; 4370 struct qla_tgt_mgmt_cmd *mcmd; 4371 uint32_t lun, unpacked_lun; 4372 int rc; 4373 4374 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4375 if (mcmd == NULL) { 4376 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4377 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4378 vha->vp_idx, __func__); 4379 return -ENOMEM; 4380 } 4381 memset(mcmd, 0, sizeof(*mcmd)); 4382 4383 mcmd->sess = sess; 4384 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4385 sizeof(mcmd->orig_iocb.imm_ntfy)); 4386 4387 lun = a->u.isp24.fcp_cmnd.lun; 4388 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 4389 mcmd->reset_count = vha->hw->chip_reset; 4390 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4391 4392 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4393 le16_to_cpu(iocb->u.isp2x.seq_id)); 4394 if (rc != 0) { 4395 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4396 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4397 vha->vp_idx, rc); 4398 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4399 return -EFAULT; 4400 } 4401 4402 return 0; 4403 } 4404 4405 /* ha->hardware_lock supposed to be held on entry */ 4406 static int qlt_abort_task(struct scsi_qla_host *vha, 4407 struct imm_ntfy_from_isp *iocb) 4408 { 4409 struct qla_hw_data *ha = vha->hw; 4410 struct fc_port *sess; 4411 int loop_id; 4412 unsigned long flags; 4413 4414 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4415 4416 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4417 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4418 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4419 4420 if (sess == NULL) { 4421 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4422 "qla_target(%d): task abort for unexisting " 4423 "session\n", vha->vp_idx); 4424 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4425 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4426 } 4427 4428 return __qlt_abort_task(vha, iocb, sess); 4429 } 4430 4431 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4432 { 4433 if (rc != MBS_COMMAND_COMPLETE) { 4434 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4435 "%s: se_sess %p / sess %p from" 4436 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4437 " LOGO failed: %#x\n", 4438 __func__, 4439 fcport->se_sess, 4440 fcport, 4441 fcport->port_name, fcport->loop_id, 4442 fcport->d_id.b.domain, fcport->d_id.b.area, 4443 fcport->d_id.b.al_pa, rc); 4444 } 4445 4446 fcport->logout_completed = 1; 4447 } 4448 4449 /* 4450 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4451 * 4452 * Schedules sessions with matching port_id/loop_id but different wwn for 4453 * deletion. Returns existing session with matching wwn if present. 4454 * Null otherwise. 4455 */ 4456 struct fc_port * 4457 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4458 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4459 { 4460 struct fc_port *sess = NULL, *other_sess; 4461 uint64_t other_wwn; 4462 4463 *conflict_sess = NULL; 4464 4465 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4466 4467 other_wwn = wwn_to_u64(other_sess->port_name); 4468 4469 if (wwn == other_wwn) { 4470 WARN_ON(sess); 4471 sess = other_sess; 4472 continue; 4473 } 4474 4475 /* find other sess with nport_id collision */ 4476 if (port_id.b24 == other_sess->d_id.b24) { 4477 if (loop_id != other_sess->loop_id) { 4478 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4479 "Invalidating sess %p loop_id %d wwn %llx.\n", 4480 other_sess, other_sess->loop_id, other_wwn); 4481 4482 /* 4483 * logout_on_delete is set by default, but another 4484 * session that has the same s_id/loop_id combo 4485 * might have cleared it when requested this session 4486 * deletion, so don't touch it 4487 */ 4488 qlt_schedule_sess_for_deletion(other_sess, true); 4489 } else { 4490 /* 4491 * Another wwn used to have our s_id/loop_id 4492 * kill the session, but don't free the loop_id 4493 */ 4494 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff, 4495 "Invalidating sess %p loop_id %d wwn %llx.\n", 4496 other_sess, other_sess->loop_id, other_wwn); 4497 4498 4499 other_sess->keep_nport_handle = 1; 4500 *conflict_sess = other_sess; 4501 qlt_schedule_sess_for_deletion(other_sess, 4502 true); 4503 } 4504 continue; 4505 } 4506 4507 /* find other sess with nport handle collision */ 4508 if ((loop_id == other_sess->loop_id) && 4509 (loop_id != FC_NO_LOOP_ID)) { 4510 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4511 "Invalidating sess %p loop_id %d wwn %llx.\n", 4512 other_sess, other_sess->loop_id, other_wwn); 4513 4514 /* Same loop_id but different s_id 4515 * Ok to kill and logout */ 4516 qlt_schedule_sess_for_deletion(other_sess, true); 4517 } 4518 } 4519 4520 return sess; 4521 } 4522 4523 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4524 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4525 { 4526 struct qla_tgt_sess_op *op; 4527 struct qla_tgt_cmd *cmd; 4528 uint32_t key; 4529 int count = 0; 4530 4531 key = (((u32)s_id->b.domain << 16) | 4532 ((u32)s_id->b.area << 8) | 4533 ((u32)s_id->b.al_pa)); 4534 4535 spin_lock(&vha->cmd_list_lock); 4536 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4537 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4538 4539 if (op_key == key) { 4540 op->aborted = true; 4541 count++; 4542 } 4543 } 4544 4545 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4546 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4547 if (op_key == key) { 4548 op->aborted = true; 4549 count++; 4550 } 4551 } 4552 4553 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4554 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4555 if (cmd_key == key) { 4556 cmd->aborted = 1; 4557 count++; 4558 } 4559 } 4560 spin_unlock(&vha->cmd_list_lock); 4561 4562 return count; 4563 } 4564 4565 /* 4566 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4567 */ 4568 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4569 struct imm_ntfy_from_isp *iocb) 4570 { 4571 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4572 struct qla_hw_data *ha = vha->hw; 4573 struct fc_port *sess = NULL, *conflict_sess = NULL; 4574 uint64_t wwn; 4575 port_id_t port_id; 4576 uint16_t loop_id; 4577 uint16_t wd3_lo; 4578 int res = 0; 4579 struct qlt_plogi_ack_t *pla; 4580 unsigned long flags; 4581 4582 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4583 4584 port_id.b.domain = iocb->u.isp24.port_id[2]; 4585 port_id.b.area = iocb->u.isp24.port_id[1]; 4586 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4587 port_id.b.rsvd_1 = 0; 4588 4589 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4590 4591 ql_dbg(ql_dbg_disc, vha, 0xf026, 4592 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4593 vha->vp_idx, iocb->u.isp24.port_id[2], 4594 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4595 iocb->u.isp24.status_subcode, loop_id, 4596 iocb->u.isp24.port_name); 4597 4598 /* res = 1 means ack at the end of thread 4599 * res = 0 means ack async/later. 4600 */ 4601 switch (iocb->u.isp24.status_subcode) { 4602 case ELS_PLOGI: 4603 4604 /* Mark all stale commands in qla_tgt_wq for deletion */ 4605 abort_cmds_for_s_id(vha, &port_id); 4606 4607 if (wwn) { 4608 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4609 sess = qlt_find_sess_invalidate_other(vha, wwn, 4610 port_id, loop_id, &conflict_sess); 4611 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4612 } 4613 4614 if (IS_SW_RESV_ADDR(port_id)) { 4615 res = 1; 4616 break; 4617 } 4618 4619 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4620 if (!pla) { 4621 qlt_send_term_imm_notif(vha, iocb, 1); 4622 break; 4623 } 4624 4625 res = 0; 4626 4627 if (conflict_sess) { 4628 conflict_sess->login_gen++; 4629 qlt_plogi_ack_link(vha, pla, conflict_sess, 4630 QLT_PLOGI_LINK_CONFLICT); 4631 } 4632 4633 if (!sess) { 4634 pla->ref_count++; 4635 qla24xx_post_newsess_work(vha, &port_id, 4636 iocb->u.isp24.port_name, pla); 4637 res = 0; 4638 break; 4639 } 4640 4641 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4642 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4643 sess->d_id = port_id; 4644 sess->login_gen++; 4645 4646 switch (sess->disc_state) { 4647 case DSC_DELETED: 4648 qlt_plogi_ack_unref(vha, pla); 4649 break; 4650 4651 default: 4652 /* 4653 * Under normal circumstances we want to release nport handle 4654 * during LOGO process to avoid nport handle leaks inside FW. 4655 * The exception is when LOGO is done while another PLOGI with 4656 * the same nport handle is waiting as might be the case here. 4657 * Note: there is always a possibily of a race where session 4658 * deletion has already started for other reasons (e.g. ACL 4659 * removal) and now PLOGI arrives: 4660 * 1. if PLOGI arrived in FW after nport handle has been freed, 4661 * FW must have assigned this PLOGI a new/same handle and we 4662 * can proceed ACK'ing it as usual when session deletion 4663 * completes. 4664 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4665 * bit reached it, the handle has now been released. We'll 4666 * get an error when we ACK this PLOGI. Nothing will be sent 4667 * back to initiator. Initiator should eventually retry 4668 * PLOGI and situation will correct itself. 4669 */ 4670 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4671 (sess->d_id.b24 == port_id.b24)); 4672 4673 ql_dbg(ql_dbg_disc, vha, 0xffff, 4674 "%s %d %8phC post del sess\n", 4675 __func__, __LINE__, sess->port_name); 4676 4677 4678 qlt_schedule_sess_for_deletion_lock(sess); 4679 break; 4680 } 4681 4682 break; 4683 4684 case ELS_PRLI: 4685 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4686 4687 if (wwn) { 4688 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4689 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4690 loop_id, &conflict_sess); 4691 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4692 } 4693 4694 if (conflict_sess) { 4695 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4696 "PRLI with conflicting sess %p port %8phC\n", 4697 conflict_sess, conflict_sess->port_name); 4698 qlt_send_term_imm_notif(vha, iocb, 1); 4699 res = 0; 4700 break; 4701 } 4702 4703 if (sess != NULL) { 4704 if (sess->fw_login_state != DSC_LS_PLOGI_PEND && 4705 sess->fw_login_state != DSC_LS_PLOGI_COMP) { 4706 /* 4707 * Impatient initiator sent PRLI before last 4708 * PLOGI could finish. Will force him to re-try, 4709 * while last one finishes. 4710 */ 4711 ql_log(ql_log_warn, sess->vha, 0xf095, 4712 "sess %p PRLI received, before plogi ack.\n", 4713 sess); 4714 qlt_send_term_imm_notif(vha, iocb, 1); 4715 res = 0; 4716 break; 4717 } 4718 4719 /* 4720 * This shouldn't happen under normal circumstances, 4721 * since we have deleted the old session during PLOGI 4722 */ 4723 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4724 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4725 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4726 4727 sess->local = 0; 4728 sess->loop_id = loop_id; 4729 sess->d_id = port_id; 4730 sess->fw_login_state = DSC_LS_PRLI_PEND; 4731 4732 if (wd3_lo & BIT_7) 4733 sess->conf_compl_supported = 1; 4734 4735 if ((wd3_lo & BIT_4) == 0) 4736 sess->port_type = FCT_INITIATOR; 4737 else 4738 sess->port_type = FCT_TARGET; 4739 } 4740 res = 1; /* send notify ack */ 4741 4742 /* Make session global (not used in fabric mode) */ 4743 if (ha->current_topology != ISP_CFG_F) { 4744 if (sess) { 4745 ql_dbg(ql_dbg_disc, vha, 0xffff, 4746 "%s %d %8phC post nack\n", 4747 __func__, __LINE__, sess->port_name); 4748 qla24xx_post_nack_work(vha, sess, iocb, 4749 SRB_NACK_PRLI); 4750 res = 0; 4751 } else { 4752 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4753 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4754 qla2xxx_wake_dpc(vha); 4755 } 4756 } else { 4757 if (sess) { 4758 ql_dbg(ql_dbg_disc, vha, 0xffff, 4759 "%s %d %8phC post nack\n", 4760 __func__, __LINE__, sess->port_name); 4761 qla24xx_post_nack_work(vha, sess, iocb, 4762 SRB_NACK_PRLI); 4763 res = 0; 4764 } 4765 } 4766 break; 4767 4768 case ELS_TPRLO: 4769 if (le16_to_cpu(iocb->u.isp24.flags) & 4770 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 4771 loop_id = 0xFFFF; 4772 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 4773 res = 1; 4774 break; 4775 } 4776 /* drop through */ 4777 case ELS_LOGO: 4778 case ELS_PRLO: 4779 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4780 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 4781 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4782 4783 if (sess) { 4784 sess->login_gen++; 4785 sess->fw_login_state = DSC_LS_LOGO_PEND; 4786 sess->logo_ack_needed = 1; 4787 memcpy(sess->iocb, iocb, IOCB_SIZE); 4788 } 4789 4790 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4791 4792 ql_dbg(ql_dbg_disc, vha, 0xffff, 4793 "%s: logo %llx res %d sess %p ", 4794 __func__, wwn, res, sess); 4795 if (res == 0) { 4796 /* 4797 * cmd went upper layer, look for qlt_xmit_tm_rsp() 4798 * for LOGO_ACK & sess delete 4799 */ 4800 BUG_ON(!sess); 4801 res = 0; 4802 } else { 4803 /* cmd did not go to upper layer. */ 4804 if (sess) { 4805 qlt_schedule_sess_for_deletion_lock(sess); 4806 res = 0; 4807 } 4808 /* else logo will be ack */ 4809 } 4810 break; 4811 case ELS_PDISC: 4812 case ELS_ADISC: 4813 { 4814 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4815 if (tgt->link_reinit_iocb_pending) { 4816 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4817 0, 0, 0, 0, 0, 0); 4818 tgt->link_reinit_iocb_pending = 0; 4819 } 4820 4821 sess = qla2x00_find_fcport_by_wwpn(vha, 4822 iocb->u.isp24.port_name, 1); 4823 if (sess) { 4824 ql_dbg(ql_dbg_disc, vha, 0xffff, 4825 "sess %p lid %d|%d DS %d LS %d\n", 4826 sess, sess->loop_id, loop_id, 4827 sess->disc_state, sess->fw_login_state); 4828 } 4829 4830 res = 1; /* send notify ack */ 4831 break; 4832 } 4833 4834 case ELS_FLOGI: /* should never happen */ 4835 default: 4836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 4837 "qla_target(%d): Unsupported ELS command %x " 4838 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 4839 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4840 break; 4841 } 4842 4843 return res; 4844 } 4845 4846 /* 4847 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4848 */ 4849 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 4850 struct imm_ntfy_from_isp *iocb) 4851 { 4852 struct qla_hw_data *ha = vha->hw; 4853 uint32_t add_flags = 0; 4854 int send_notify_ack = 1; 4855 uint16_t status; 4856 4857 status = le16_to_cpu(iocb->u.isp2x.status); 4858 switch (status) { 4859 case IMM_NTFY_LIP_RESET: 4860 { 4861 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 4862 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 4863 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 4864 iocb->u.isp24.status_subcode); 4865 4866 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4867 send_notify_ack = 0; 4868 break; 4869 } 4870 4871 case IMM_NTFY_LIP_LINK_REINIT: 4872 { 4873 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 4875 "qla_target(%d): LINK REINIT (loop %#x, " 4876 "subcode %x)\n", vha->vp_idx, 4877 le16_to_cpu(iocb->u.isp24.nport_handle), 4878 iocb->u.isp24.status_subcode); 4879 if (tgt->link_reinit_iocb_pending) { 4880 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4881 0, 0, 0, 0, 0, 0); 4882 } 4883 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 4884 tgt->link_reinit_iocb_pending = 1; 4885 /* 4886 * QLogic requires to wait after LINK REINIT for possible 4887 * PDISC or ADISC ELS commands 4888 */ 4889 send_notify_ack = 0; 4890 break; 4891 } 4892 4893 case IMM_NTFY_PORT_LOGOUT: 4894 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 4895 "qla_target(%d): Port logout (loop " 4896 "%#x, subcode %x)\n", vha->vp_idx, 4897 le16_to_cpu(iocb->u.isp24.nport_handle), 4898 iocb->u.isp24.status_subcode); 4899 4900 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 4901 send_notify_ack = 0; 4902 /* The sessions will be cleared in the callback, if needed */ 4903 break; 4904 4905 case IMM_NTFY_GLBL_TPRLO: 4906 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 4907 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 4908 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4909 send_notify_ack = 0; 4910 /* The sessions will be cleared in the callback, if needed */ 4911 break; 4912 4913 case IMM_NTFY_PORT_CONFIG: 4914 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 4915 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 4916 status); 4917 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4918 send_notify_ack = 0; 4919 /* The sessions will be cleared in the callback, if needed */ 4920 break; 4921 4922 case IMM_NTFY_GLBL_LOGO: 4923 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 4924 "qla_target(%d): Link failure detected\n", 4925 vha->vp_idx); 4926 /* I_T nexus loss */ 4927 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4928 send_notify_ack = 0; 4929 break; 4930 4931 case IMM_NTFY_IOCB_OVERFLOW: 4932 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 4933 "qla_target(%d): Cannot provide requested " 4934 "capability (IOCB overflowed the immediate notify " 4935 "resource count)\n", vha->vp_idx); 4936 break; 4937 4938 case IMM_NTFY_ABORT_TASK: 4939 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 4940 "qla_target(%d): Abort Task (S %08x I %#x -> " 4941 "L %#x)\n", vha->vp_idx, 4942 le16_to_cpu(iocb->u.isp2x.seq_id), 4943 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 4944 le16_to_cpu(iocb->u.isp2x.lun)); 4945 if (qlt_abort_task(vha, iocb) == 0) 4946 send_notify_ack = 0; 4947 break; 4948 4949 case IMM_NTFY_RESOURCE: 4950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 4951 "qla_target(%d): Out of resources, host %ld\n", 4952 vha->vp_idx, vha->host_no); 4953 break; 4954 4955 case IMM_NTFY_MSG_RX: 4956 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 4957 "qla_target(%d): Immediate notify task %x\n", 4958 vha->vp_idx, iocb->u.isp2x.task_flags); 4959 if (qlt_handle_task_mgmt(vha, iocb) == 0) 4960 send_notify_ack = 0; 4961 break; 4962 4963 case IMM_NTFY_ELS: 4964 if (qlt_24xx_handle_els(vha, iocb) == 0) 4965 send_notify_ack = 0; 4966 break; 4967 default: 4968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 4969 "qla_target(%d): Received unknown immediate " 4970 "notify status %x\n", vha->vp_idx, status); 4971 break; 4972 } 4973 4974 if (send_notify_ack) 4975 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0); 4976 } 4977 4978 /* 4979 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4980 * This function sends busy to ISP 2xxx or 24xx. 4981 */ 4982 static int __qlt_send_busy(struct scsi_qla_host *vha, 4983 struct atio_from_isp *atio, uint16_t status) 4984 { 4985 struct ctio7_to_24xx *ctio24; 4986 struct qla_hw_data *ha = vha->hw; 4987 request_t *pkt; 4988 struct fc_port *sess = NULL; 4989 unsigned long flags; 4990 4991 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4992 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4993 atio->u.isp24.fcp_hdr.s_id); 4994 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4995 if (!sess) { 4996 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 4997 return 0; 4998 } 4999 /* Sending marker isn't necessary, since we called from ISR */ 5000 5001 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 5002 if (!pkt) { 5003 ql_dbg(ql_dbg_io, vha, 0x3063, 5004 "qla_target(%d): %s failed: unable to allocate " 5005 "request packet", vha->vp_idx, __func__); 5006 return -ENOMEM; 5007 } 5008 5009 vha->tgt_counters.num_q_full_sent++; 5010 pkt->entry_count = 1; 5011 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5012 5013 ctio24 = (struct ctio7_to_24xx *)pkt; 5014 ctio24->entry_type = CTIO_TYPE7; 5015 ctio24->nport_handle = sess->loop_id; 5016 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5017 ctio24->vp_index = vha->vp_idx; 5018 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5019 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5020 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5021 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5022 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 5023 cpu_to_le16( 5024 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5025 CTIO7_FLAGS_DONT_RET_CTIO); 5026 /* 5027 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5028 * if the explicit conformation is used. 5029 */ 5030 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5031 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5032 /* Memory Barrier */ 5033 wmb(); 5034 qla2x00_start_iocbs(vha, vha->req); 5035 return 0; 5036 } 5037 5038 /* 5039 * This routine is used to allocate a command for either a QFull condition 5040 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5041 * out previously. 5042 */ 5043 static void 5044 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5045 struct atio_from_isp *atio, uint16_t status, int qfull) 5046 { 5047 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5048 struct qla_hw_data *ha = vha->hw; 5049 struct fc_port *sess; 5050 struct se_session *se_sess; 5051 struct qla_tgt_cmd *cmd; 5052 int tag; 5053 5054 if (unlikely(tgt->tgt_stop)) { 5055 ql_dbg(ql_dbg_io, vha, 0x300a, 5056 "New command while device %p is shutting down\n", tgt); 5057 return; 5058 } 5059 5060 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5061 vha->hw->tgt.num_qfull_cmds_dropped++; 5062 if (vha->hw->tgt.num_qfull_cmds_dropped > 5063 vha->qla_stats.stat_max_qfull_cmds_dropped) 5064 vha->qla_stats.stat_max_qfull_cmds_dropped = 5065 vha->hw->tgt.num_qfull_cmds_dropped; 5066 5067 ql_dbg(ql_dbg_io, vha, 0x3068, 5068 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5069 vha->vp_idx, __func__, 5070 vha->hw->tgt.num_qfull_cmds_dropped); 5071 5072 qlt_chk_exch_leak_thresh_hold(vha); 5073 return; 5074 } 5075 5076 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5077 (vha, atio->u.isp24.fcp_hdr.s_id); 5078 if (!sess) 5079 return; 5080 5081 se_sess = sess->se_sess; 5082 5083 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 5084 if (tag < 0) 5085 return; 5086 5087 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5088 if (!cmd) { 5089 ql_dbg(ql_dbg_io, vha, 0x3009, 5090 "qla_target(%d): %s: Allocation of cmd failed\n", 5091 vha->vp_idx, __func__); 5092 5093 vha->hw->tgt.num_qfull_cmds_dropped++; 5094 if (vha->hw->tgt.num_qfull_cmds_dropped > 5095 vha->qla_stats.stat_max_qfull_cmds_dropped) 5096 vha->qla_stats.stat_max_qfull_cmds_dropped = 5097 vha->hw->tgt.num_qfull_cmds_dropped; 5098 5099 qlt_chk_exch_leak_thresh_hold(vha); 5100 return; 5101 } 5102 5103 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5104 5105 qlt_incr_num_pend_cmds(vha); 5106 INIT_LIST_HEAD(&cmd->cmd_list); 5107 memcpy(&cmd->atio, atio, sizeof(*atio)); 5108 5109 cmd->tgt = vha->vha_tgt.qla_tgt; 5110 cmd->vha = vha; 5111 cmd->reset_count = vha->hw->chip_reset; 5112 cmd->q_full = 1; 5113 5114 if (qfull) { 5115 cmd->q_full = 1; 5116 /* NOTE: borrowing the state field to carry the status */ 5117 cmd->state = status; 5118 } else 5119 cmd->term_exchg = 1; 5120 5121 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5122 5123 vha->hw->tgt.num_qfull_cmds_alloc++; 5124 if (vha->hw->tgt.num_qfull_cmds_alloc > 5125 vha->qla_stats.stat_max_qfull_cmds_alloc) 5126 vha->qla_stats.stat_max_qfull_cmds_alloc = 5127 vha->hw->tgt.num_qfull_cmds_alloc; 5128 } 5129 5130 int 5131 qlt_free_qfull_cmds(struct scsi_qla_host *vha) 5132 { 5133 struct qla_hw_data *ha = vha->hw; 5134 unsigned long flags; 5135 struct qla_tgt_cmd *cmd, *tcmd; 5136 struct list_head free_list; 5137 int rc = 0; 5138 5139 if (list_empty(&ha->tgt.q_full_list)) 5140 return 0; 5141 5142 INIT_LIST_HEAD(&free_list); 5143 5144 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 5145 5146 if (list_empty(&ha->tgt.q_full_list)) { 5147 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5148 return 0; 5149 } 5150 5151 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) { 5152 if (cmd->q_full) 5153 /* cmd->state is a borrowed field to hold status */ 5154 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state); 5155 else if (cmd->term_exchg) 5156 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio); 5157 5158 if (rc == -ENOMEM) 5159 break; 5160 5161 if (cmd->q_full) 5162 ql_dbg(ql_dbg_io, vha, 0x3006, 5163 "%s: busy sent for ox_id[%04x]\n", __func__, 5164 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5165 else if (cmd->term_exchg) 5166 ql_dbg(ql_dbg_io, vha, 0x3007, 5167 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5168 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5169 else 5170 ql_dbg(ql_dbg_io, vha, 0x3008, 5171 "%s: Unexpected cmd in QFull list %p\n", __func__, 5172 cmd); 5173 5174 list_del(&cmd->cmd_list); 5175 list_add_tail(&cmd->cmd_list, &free_list); 5176 5177 /* piggy back on hardware_lock for protection */ 5178 vha->hw->tgt.num_qfull_cmds_alloc--; 5179 } 5180 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5181 5182 cmd = NULL; 5183 5184 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5185 list_del(&cmd->cmd_list); 5186 /* This cmd was never sent to TCM. There is no need 5187 * to schedule free or call free_cmd 5188 */ 5189 qlt_free_cmd(cmd); 5190 } 5191 return rc; 5192 } 5193 5194 static void 5195 qlt_send_busy(struct scsi_qla_host *vha, 5196 struct atio_from_isp *atio, uint16_t status) 5197 { 5198 int rc = 0; 5199 5200 rc = __qlt_send_busy(vha, atio, status); 5201 if (rc == -ENOMEM) 5202 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5203 } 5204 5205 static int 5206 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, 5207 struct atio_from_isp *atio, bool ha_locked) 5208 { 5209 struct qla_hw_data *ha = vha->hw; 5210 uint16_t status; 5211 unsigned long flags; 5212 5213 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5214 return 0; 5215 5216 if (!ha_locked) 5217 spin_lock_irqsave(&ha->hardware_lock, flags); 5218 status = temp_sam_status; 5219 qlt_send_busy(vha, atio, status); 5220 if (!ha_locked) 5221 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5222 5223 return 1; 5224 } 5225 5226 /* ha->hardware_lock supposed to be held on entry */ 5227 /* called via callback from qla2xxx */ 5228 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5229 struct atio_from_isp *atio, uint8_t ha_locked) 5230 { 5231 struct qla_hw_data *ha = vha->hw; 5232 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5233 int rc; 5234 unsigned long flags; 5235 5236 if (unlikely(tgt == NULL)) { 5237 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5238 "ATIO pkt, but no tgt (ha %p)", ha); 5239 return; 5240 } 5241 /* 5242 * In tgt_stop mode we also should allow all requests to pass. 5243 * Otherwise, some commands can stuck. 5244 */ 5245 5246 tgt->atio_irq_cmd_count++; 5247 5248 switch (atio->u.raw.entry_type) { 5249 case ATIO_TYPE7: 5250 if (unlikely(atio->u.isp24.exchange_addr == 5251 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5252 ql_dbg(ql_dbg_io, vha, 0x3065, 5253 "qla_target(%d): ATIO_TYPE7 " 5254 "received with UNKNOWN exchange address, " 5255 "sending QUEUE_FULL\n", vha->vp_idx); 5256 if (!ha_locked) 5257 spin_lock_irqsave(&ha->hardware_lock, flags); 5258 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL); 5259 if (!ha_locked) 5260 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5261 break; 5262 } 5263 5264 5265 5266 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5267 rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked); 5268 if (rc != 0) { 5269 tgt->atio_irq_cmd_count--; 5270 return; 5271 } 5272 rc = qlt_handle_cmd_for_atio(vha, atio); 5273 } else { 5274 rc = qlt_handle_task_mgmt(vha, atio); 5275 } 5276 if (unlikely(rc != 0)) { 5277 if (rc == -ESRCH) { 5278 if (!ha_locked) 5279 spin_lock_irqsave 5280 (&ha->hardware_lock, flags); 5281 5282 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5283 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5284 #else 5285 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5286 #endif 5287 5288 if (!ha_locked) 5289 spin_unlock_irqrestore 5290 (&ha->hardware_lock, flags); 5291 5292 } else { 5293 if (tgt->tgt_stop) { 5294 ql_dbg(ql_dbg_tgt, vha, 0xe059, 5295 "qla_target: Unable to send " 5296 "command to target for req, " 5297 "ignoring.\n"); 5298 } else { 5299 ql_dbg(ql_dbg_tgt, vha, 0xe05a, 5300 "qla_target(%d): Unable to send " 5301 "command to target, sending BUSY " 5302 "status.\n", vha->vp_idx); 5303 if (!ha_locked) 5304 spin_lock_irqsave( 5305 &ha->hardware_lock, flags); 5306 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5307 if (!ha_locked) 5308 spin_unlock_irqrestore( 5309 &ha->hardware_lock, flags); 5310 } 5311 } 5312 } 5313 break; 5314 5315 case IMMED_NOTIFY_TYPE: 5316 { 5317 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5318 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5319 "qla_target(%d): Received ATIO packet %x " 5320 "with error status %x\n", vha->vp_idx, 5321 atio->u.raw.entry_type, 5322 atio->u.isp2x.entry_status); 5323 break; 5324 } 5325 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5326 5327 if (!ha_locked) 5328 spin_lock_irqsave(&ha->hardware_lock, flags); 5329 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5330 if (!ha_locked) 5331 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5332 break; 5333 } 5334 5335 default: 5336 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5337 "qla_target(%d): Received unknown ATIO atio " 5338 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5339 break; 5340 } 5341 5342 tgt->atio_irq_cmd_count--; 5343 } 5344 5345 /* ha->hardware_lock supposed to be held on entry */ 5346 /* called via callback from qla2xxx */ 5347 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) 5348 { 5349 struct qla_hw_data *ha = vha->hw; 5350 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5351 5352 if (unlikely(tgt == NULL)) { 5353 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5354 "qla_target(%d): Response pkt %x received, but no " 5355 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha); 5356 return; 5357 } 5358 5359 /* 5360 * In tgt_stop mode we also should allow all requests to pass. 5361 * Otherwise, some commands can stuck. 5362 */ 5363 5364 tgt->irq_cmd_count++; 5365 5366 switch (pkt->entry_type) { 5367 case CTIO_CRC2: 5368 case CTIO_TYPE7: 5369 { 5370 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5371 qlt_do_ctio_completion(vha, entry->handle, 5372 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5373 entry); 5374 break; 5375 } 5376 5377 case ACCEPT_TGT_IO_TYPE: 5378 { 5379 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5380 int rc; 5381 if (atio->u.isp2x.status != 5382 cpu_to_le16(ATIO_CDB_VALID)) { 5383 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5384 "qla_target(%d): ATIO with error " 5385 "status %x received\n", vha->vp_idx, 5386 le16_to_cpu(atio->u.isp2x.status)); 5387 break; 5388 } 5389 5390 rc = qlt_chk_qfull_thresh_hold(vha, atio, true); 5391 if (rc != 0) { 5392 tgt->irq_cmd_count--; 5393 return; 5394 } 5395 5396 rc = qlt_handle_cmd_for_atio(vha, atio); 5397 if (unlikely(rc != 0)) { 5398 if (rc == -ESRCH) { 5399 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5400 qlt_send_busy(vha, atio, 0); 5401 #else 5402 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5403 #endif 5404 } else { 5405 if (tgt->tgt_stop) { 5406 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5407 "qla_target: Unable to send " 5408 "command to target, sending TERM " 5409 "EXCHANGE for rsp\n"); 5410 qlt_send_term_exchange(vha, NULL, 5411 atio, 1, 0); 5412 } else { 5413 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5414 "qla_target(%d): Unable to send " 5415 "command to target, sending BUSY " 5416 "status\n", vha->vp_idx); 5417 qlt_send_busy(vha, atio, 0); 5418 } 5419 } 5420 } 5421 } 5422 break; 5423 5424 case CONTINUE_TGT_IO_TYPE: 5425 { 5426 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5427 qlt_do_ctio_completion(vha, entry->handle, 5428 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5429 entry); 5430 break; 5431 } 5432 5433 case CTIO_A64_TYPE: 5434 { 5435 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5436 qlt_do_ctio_completion(vha, entry->handle, 5437 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5438 entry); 5439 break; 5440 } 5441 5442 case IMMED_NOTIFY_TYPE: 5443 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5444 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5445 break; 5446 5447 case NOTIFY_ACK_TYPE: 5448 if (tgt->notify_ack_expected > 0) { 5449 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5450 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5451 "NOTIFY_ACK seq %08x status %x\n", 5452 le16_to_cpu(entry->u.isp2x.seq_id), 5453 le16_to_cpu(entry->u.isp2x.status)); 5454 tgt->notify_ack_expected--; 5455 if (entry->u.isp2x.status != 5456 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5457 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5458 "qla_target(%d): NOTIFY_ACK " 5459 "failed %x\n", vha->vp_idx, 5460 le16_to_cpu(entry->u.isp2x.status)); 5461 } 5462 } else { 5463 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5464 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5465 vha->vp_idx); 5466 } 5467 break; 5468 5469 case ABTS_RECV_24XX: 5470 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5471 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5472 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5473 break; 5474 5475 case ABTS_RESP_24XX: 5476 if (tgt->abts_resp_expected > 0) { 5477 struct abts_resp_from_24xx_fw *entry = 5478 (struct abts_resp_from_24xx_fw *)pkt; 5479 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5480 "ABTS_RESP_24XX: compl_status %x\n", 5481 entry->compl_status); 5482 tgt->abts_resp_expected--; 5483 if (le16_to_cpu(entry->compl_status) != 5484 ABTS_RESP_COMPL_SUCCESS) { 5485 if ((entry->error_subcode1 == 0x1E) && 5486 (entry->error_subcode2 == 0)) { 5487 /* 5488 * We've got a race here: aborted 5489 * exchange not terminated, i.e. 5490 * response for the aborted command was 5491 * sent between the abort request was 5492 * received and processed. 5493 * Unfortunately, the firmware has a 5494 * silly requirement that all aborted 5495 * exchanges must be explicitely 5496 * terminated, otherwise it refuses to 5497 * send responses for the abort 5498 * requests. So, we have to 5499 * (re)terminate the exchange and retry 5500 * the abort response. 5501 */ 5502 qlt_24xx_retry_term_exchange(vha, 5503 entry); 5504 } else 5505 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5506 "qla_target(%d): ABTS_RESP_24XX " 5507 "failed %x (subcode %x:%x)", 5508 vha->vp_idx, entry->compl_status, 5509 entry->error_subcode1, 5510 entry->error_subcode2); 5511 } 5512 } else { 5513 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5514 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5515 "received\n", vha->vp_idx); 5516 } 5517 break; 5518 5519 default: 5520 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5521 "qla_target(%d): Received unknown response pkt " 5522 "type %x\n", vha->vp_idx, pkt->entry_type); 5523 break; 5524 } 5525 5526 tgt->irq_cmd_count--; 5527 } 5528 5529 /* 5530 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5531 */ 5532 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5533 uint16_t *mailbox) 5534 { 5535 struct qla_hw_data *ha = vha->hw; 5536 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5537 int login_code; 5538 5539 if (!ha->tgt.tgt_ops) 5540 return; 5541 5542 if (unlikely(tgt == NULL)) { 5543 ql_dbg(ql_dbg_tgt, vha, 0xe03a, 5544 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha); 5545 return; 5546 } 5547 5548 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5549 IS_QLA2100(ha)) 5550 return; 5551 /* 5552 * In tgt_stop mode we also should allow all requests to pass. 5553 * Otherwise, some commands can stuck. 5554 */ 5555 5556 tgt->irq_cmd_count++; 5557 5558 switch (code) { 5559 case MBA_RESET: /* Reset */ 5560 case MBA_SYSTEM_ERR: /* System Error */ 5561 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5562 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5564 "qla_target(%d): System error async event %#x " 5565 "occurred", vha->vp_idx, code); 5566 break; 5567 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5568 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5569 break; 5570 5571 case MBA_LOOP_UP: 5572 { 5573 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5574 "qla_target(%d): Async LOOP_UP occurred " 5575 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5576 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5577 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5578 if (tgt->link_reinit_iocb_pending) { 5579 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb, 5580 0, 0, 0, 0, 0, 0); 5581 tgt->link_reinit_iocb_pending = 0; 5582 } 5583 break; 5584 } 5585 5586 case MBA_LIP_OCCURRED: 5587 case MBA_LOOP_DOWN: 5588 case MBA_LIP_RESET: 5589 case MBA_RSCN_UPDATE: 5590 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5591 "qla_target(%d): Async event %#x occurred " 5592 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5593 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5594 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5595 break; 5596 5597 case MBA_REJECTED_FCP_CMD: 5598 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 5599 "qla_target(%d): Async event LS_REJECT occurred " 5600 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5601 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5602 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5603 5604 if (le16_to_cpu(mailbox[3]) == 1) { 5605 /* exchange starvation. */ 5606 vha->hw->exch_starvation++; 5607 if (vha->hw->exch_starvation > 5) { 5608 ql_log(ql_log_warn, vha, 0xffff, 5609 "Exchange starvation-. Resetting RISC\n"); 5610 5611 vha->hw->exch_starvation = 0; 5612 if (IS_P3P_TYPE(vha->hw)) 5613 set_bit(FCOE_CTX_RESET_NEEDED, 5614 &vha->dpc_flags); 5615 else 5616 set_bit(ISP_ABORT_NEEDED, 5617 &vha->dpc_flags); 5618 qla2xxx_wake_dpc(vha); 5619 } 5620 } 5621 break; 5622 5623 case MBA_PORT_UPDATE: 5624 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5625 "qla_target(%d): Port update async event %#x " 5626 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5627 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5628 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5629 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5630 5631 login_code = le16_to_cpu(mailbox[2]); 5632 if (login_code == 0x4) { 5633 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5634 "Async MB 2: Got PLOGI Complete\n"); 5635 vha->hw->exch_starvation = 0; 5636 } else if (login_code == 0x7) 5637 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5638 "Async MB 2: Port Logged Out\n"); 5639 break; 5640 default: 5641 break; 5642 } 5643 5644 tgt->irq_cmd_count--; 5645 } 5646 5647 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5648 uint16_t loop_id) 5649 { 5650 fc_port_t *fcport, *tfcp, *del; 5651 int rc; 5652 unsigned long flags; 5653 u8 newfcport = 0; 5654 5655 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); 5656 if (!fcport) { 5657 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5658 "qla_target(%d): Allocation of tmp FC port failed", 5659 vha->vp_idx); 5660 return NULL; 5661 } 5662 5663 fcport->loop_id = loop_id; 5664 5665 rc = qla24xx_gpdb_wait(vha, fcport, 0); 5666 if (rc != QLA_SUCCESS) { 5667 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5668 "qla_target(%d): Failed to retrieve fcport " 5669 "information -- get_port_database() returned %x " 5670 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5671 kfree(fcport); 5672 return NULL; 5673 } 5674 5675 del = NULL; 5676 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 5677 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 5678 5679 if (tfcp) { 5680 tfcp->d_id = fcport->d_id; 5681 tfcp->port_type = fcport->port_type; 5682 tfcp->supported_classes = fcport->supported_classes; 5683 tfcp->flags |= fcport->flags; 5684 5685 del = fcport; 5686 fcport = tfcp; 5687 } else { 5688 if (vha->hw->current_topology == ISP_CFG_F) 5689 fcport->flags |= FCF_FABRIC_DEVICE; 5690 5691 list_add_tail(&fcport->list, &vha->vp_fcports); 5692 if (!IS_SW_RESV_ADDR(fcport->d_id)) 5693 vha->fcport_count++; 5694 fcport->login_gen++; 5695 fcport->disc_state = DSC_LOGIN_COMPLETE; 5696 fcport->login_succ = 1; 5697 newfcport = 1; 5698 } 5699 5700 fcport->deleted = 0; 5701 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 5702 5703 switch (vha->host->active_mode) { 5704 case MODE_INITIATOR: 5705 case MODE_DUAL: 5706 if (newfcport) { 5707 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 5708 ql_dbg(ql_dbg_disc, vha, 0xffff, 5709 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 5710 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5711 qla24xx_post_upd_fcport_work(vha, fcport); 5712 } else { 5713 ql_dbg(ql_dbg_disc, vha, 0xffff, 5714 "%s %d %8phC post gpsc fcp_cnt %d\n", 5715 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5716 qla24xx_post_gpsc_work(vha, fcport); 5717 } 5718 } 5719 break; 5720 5721 case MODE_TARGET: 5722 default: 5723 break; 5724 } 5725 if (del) 5726 qla2x00_free_fcport(del); 5727 5728 return fcport; 5729 } 5730 5731 /* Must be called under tgt_mutex */ 5732 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 5733 uint8_t *s_id) 5734 { 5735 struct fc_port *sess = NULL; 5736 fc_port_t *fcport = NULL; 5737 int rc, global_resets; 5738 uint16_t loop_id = 0; 5739 5740 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 5741 /* 5742 * This is Domain Controller, so it should be 5743 * OK to drop SCSI commands from it. 5744 */ 5745 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5746 "Unable to find initiator with S_ID %x:%x:%x", 5747 s_id[0], s_id[1], s_id[2]); 5748 return NULL; 5749 } 5750 5751 mutex_lock(&vha->vha_tgt.tgt_mutex); 5752 5753 retry: 5754 global_resets = 5755 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 5756 5757 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 5758 if (rc != 0) { 5759 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5760 5761 ql_log(ql_log_info, vha, 0xf071, 5762 "qla_target(%d): Unable to find " 5763 "initiator with S_ID %x:%x:%x", 5764 vha->vp_idx, s_id[0], s_id[1], 5765 s_id[2]); 5766 5767 if (rc == -ENOENT) { 5768 qlt_port_logo_t logo; 5769 sid_to_portid(s_id, &logo.id); 5770 logo.cmd_count = 1; 5771 qlt_send_first_logo(vha, &logo); 5772 } 5773 5774 return NULL; 5775 } 5776 5777 fcport = qlt_get_port_database(vha, loop_id); 5778 if (!fcport) { 5779 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5780 return NULL; 5781 } 5782 5783 if (global_resets != 5784 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 5785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 5786 "qla_target(%d): global reset during session discovery " 5787 "(counter was %d, new %d), retrying", vha->vp_idx, 5788 global_resets, 5789 atomic_read(&vha->vha_tgt. 5790 qla_tgt->tgt_global_resets_count)); 5791 goto retry; 5792 } 5793 5794 sess = qlt_create_sess(vha, fcport, true); 5795 5796 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5797 5798 return sess; 5799 } 5800 5801 static void qlt_abort_work(struct qla_tgt *tgt, 5802 struct qla_tgt_sess_work_param *prm) 5803 { 5804 struct scsi_qla_host *vha = tgt->vha; 5805 struct qla_hw_data *ha = vha->hw; 5806 struct fc_port *sess = NULL; 5807 unsigned long flags = 0, flags2 = 0; 5808 uint32_t be_s_id; 5809 uint8_t s_id[3]; 5810 int rc; 5811 5812 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5813 5814 if (tgt->tgt_stop) 5815 goto out_term2; 5816 5817 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 5818 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 5819 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 5820 5821 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5822 (unsigned char *)&be_s_id); 5823 if (!sess) { 5824 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5825 5826 sess = qlt_make_local_sess(vha, s_id); 5827 /* sess has got an extra creation ref */ 5828 5829 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5830 if (!sess) 5831 goto out_term2; 5832 } else { 5833 if (sess->deleted) { 5834 sess = NULL; 5835 goto out_term2; 5836 } 5837 5838 if (!kref_get_unless_zero(&sess->sess_kref)) { 5839 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff, 5840 "%s: kref_get fail %8phC \n", 5841 __func__, sess->port_name); 5842 sess = NULL; 5843 goto out_term2; 5844 } 5845 } 5846 5847 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 5848 ha->tgt.tgt_ops->put_sess(sess); 5849 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5850 5851 if (rc != 0) 5852 goto out_term; 5853 return; 5854 5855 out_term2: 5856 if (sess) 5857 ha->tgt.tgt_ops->put_sess(sess); 5858 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5859 5860 out_term: 5861 spin_lock_irqsave(&ha->hardware_lock, flags); 5862 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); 5863 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5864 } 5865 5866 static void qlt_tmr_work(struct qla_tgt *tgt, 5867 struct qla_tgt_sess_work_param *prm) 5868 { 5869 struct atio_from_isp *a = &prm->tm_iocb2; 5870 struct scsi_qla_host *vha = tgt->vha; 5871 struct qla_hw_data *ha = vha->hw; 5872 struct fc_port *sess = NULL; 5873 unsigned long flags; 5874 uint8_t *s_id = NULL; /* to hide compiler warnings */ 5875 int rc; 5876 uint32_t lun, unpacked_lun; 5877 int fn; 5878 void *iocb; 5879 5880 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5881 5882 if (tgt->tgt_stop) 5883 goto out_term2; 5884 5885 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 5886 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 5887 if (!sess) { 5888 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5889 5890 sess = qlt_make_local_sess(vha, s_id); 5891 /* sess has got an extra creation ref */ 5892 5893 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5894 if (!sess) 5895 goto out_term2; 5896 } else { 5897 if (sess->deleted) { 5898 sess = NULL; 5899 goto out_term2; 5900 } 5901 5902 if (!kref_get_unless_zero(&sess->sess_kref)) { 5903 ql_dbg(ql_dbg_tgt_tmr, vha, 0xffff, 5904 "%s: kref_get fail %8phC\n", 5905 __func__, sess->port_name); 5906 sess = NULL; 5907 goto out_term2; 5908 } 5909 } 5910 5911 iocb = a; 5912 lun = a->u.isp24.fcp_cmnd.lun; 5913 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 5914 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 5915 5916 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 5917 ha->tgt.tgt_ops->put_sess(sess); 5918 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5919 5920 if (rc != 0) 5921 goto out_term; 5922 return; 5923 5924 out_term2: 5925 if (sess) 5926 ha->tgt.tgt_ops->put_sess(sess); 5927 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5928 out_term: 5929 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0); 5930 } 5931 5932 static void qlt_sess_work_fn(struct work_struct *work) 5933 { 5934 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 5935 struct scsi_qla_host *vha = tgt->vha; 5936 unsigned long flags; 5937 5938 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 5939 5940 spin_lock_irqsave(&tgt->sess_work_lock, flags); 5941 while (!list_empty(&tgt->sess_works_list)) { 5942 struct qla_tgt_sess_work_param *prm = list_entry( 5943 tgt->sess_works_list.next, typeof(*prm), 5944 sess_works_list_entry); 5945 5946 /* 5947 * This work can be scheduled on several CPUs at time, so we 5948 * must delete the entry to eliminate double processing 5949 */ 5950 list_del(&prm->sess_works_list_entry); 5951 5952 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 5953 5954 switch (prm->type) { 5955 case QLA_TGT_SESS_WORK_ABORT: 5956 qlt_abort_work(tgt, prm); 5957 break; 5958 case QLA_TGT_SESS_WORK_TM: 5959 qlt_tmr_work(tgt, prm); 5960 break; 5961 default: 5962 BUG_ON(1); 5963 break; 5964 } 5965 5966 spin_lock_irqsave(&tgt->sess_work_lock, flags); 5967 5968 kfree(prm); 5969 } 5970 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 5971 } 5972 5973 /* Must be called under tgt_host_action_mutex */ 5974 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 5975 { 5976 struct qla_tgt *tgt; 5977 5978 if (!QLA_TGT_MODE_ENABLED()) 5979 return 0; 5980 5981 if (!IS_TGT_MODE_CAPABLE(ha)) { 5982 ql_log(ql_log_warn, base_vha, 0xe070, 5983 "This adapter does not support target mode.\n"); 5984 return 0; 5985 } 5986 5987 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 5988 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 5989 5990 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 5991 5992 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 5993 if (!tgt) { 5994 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 5995 "Unable to allocate struct qla_tgt\n"); 5996 return -ENOMEM; 5997 } 5998 5999 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6000 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6001 6002 tgt->ha = ha; 6003 tgt->vha = base_vha; 6004 init_waitqueue_head(&tgt->waitQ); 6005 INIT_LIST_HEAD(&tgt->del_sess_list); 6006 spin_lock_init(&tgt->sess_work_lock); 6007 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6008 INIT_LIST_HEAD(&tgt->sess_works_list); 6009 atomic_set(&tgt->tgt_global_resets_count, 0); 6010 6011 base_vha->vha_tgt.qla_tgt = tgt; 6012 6013 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6014 "qla_target(%d): using 64 Bit PCI addressing", 6015 base_vha->vp_idx); 6016 tgt->tgt_enable_64bit_addr = 1; 6017 /* 3 is reserved */ 6018 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6019 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX; 6020 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX; 6021 6022 mutex_lock(&qla_tgt_mutex); 6023 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6024 mutex_unlock(&qla_tgt_mutex); 6025 6026 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6027 ha->tgt.tgt_ops->add_target(base_vha); 6028 6029 return 0; 6030 } 6031 6032 /* Must be called under tgt_host_action_mutex */ 6033 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6034 { 6035 if (!vha->vha_tgt.qla_tgt) 6036 return 0; 6037 6038 if (vha->fc_vport) { 6039 qlt_release(vha->vha_tgt.qla_tgt); 6040 return 0; 6041 } 6042 6043 /* free left over qfull cmds */ 6044 qlt_init_term_exchange(vha); 6045 6046 mutex_lock(&qla_tgt_mutex); 6047 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 6048 mutex_unlock(&qla_tgt_mutex); 6049 6050 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6051 vha->host_no, ha); 6052 qlt_release(vha->vha_tgt.qla_tgt); 6053 6054 return 0; 6055 } 6056 6057 void qlt_remove_target_resources(struct qla_hw_data *ha) 6058 { 6059 struct scsi_qla_host *node; 6060 u32 key = 0; 6061 6062 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6063 btree_remove32(&ha->tgt.host_map, key); 6064 6065 btree_destroy32(&ha->tgt.host_map); 6066 } 6067 6068 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6069 unsigned char *b) 6070 { 6071 int i; 6072 6073 pr_debug("qla2xxx HW vha->node_name: "); 6074 for (i = 0; i < WWN_SIZE; i++) 6075 pr_debug("%02x ", vha->node_name[i]); 6076 pr_debug("\n"); 6077 pr_debug("qla2xxx HW vha->port_name: "); 6078 for (i = 0; i < WWN_SIZE; i++) 6079 pr_debug("%02x ", vha->port_name[i]); 6080 pr_debug("\n"); 6081 6082 pr_debug("qla2xxx passed configfs WWPN: "); 6083 put_unaligned_be64(wwpn, b); 6084 for (i = 0; i < WWN_SIZE; i++) 6085 pr_debug("%02x ", b[i]); 6086 pr_debug("\n"); 6087 } 6088 6089 /** 6090 * qla_tgt_lport_register - register lport with external module 6091 * 6092 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops 6093 * @wwpn: Passwd FC target WWPN 6094 * @callback: lport initialization callback for tcm_qla2xxx code 6095 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6096 */ 6097 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6098 u64 npiv_wwpn, u64 npiv_wwnn, 6099 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6100 { 6101 struct qla_tgt *tgt; 6102 struct scsi_qla_host *vha; 6103 struct qla_hw_data *ha; 6104 struct Scsi_Host *host; 6105 unsigned long flags; 6106 int rc; 6107 u8 b[WWN_SIZE]; 6108 6109 mutex_lock(&qla_tgt_mutex); 6110 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6111 vha = tgt->vha; 6112 ha = vha->hw; 6113 6114 host = vha->host; 6115 if (!host) 6116 continue; 6117 6118 if (!(host->hostt->supported_mode & MODE_TARGET)) 6119 continue; 6120 6121 spin_lock_irqsave(&ha->hardware_lock, flags); 6122 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6123 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6124 host->host_no); 6125 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6126 continue; 6127 } 6128 if (tgt->tgt_stop) { 6129 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6130 host->host_no); 6131 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6132 continue; 6133 } 6134 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6135 6136 if (!scsi_host_get(host)) { 6137 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6138 "Unable to scsi_host_get() for" 6139 " qla2xxx scsi_host\n"); 6140 continue; 6141 } 6142 qlt_lport_dump(vha, phys_wwpn, b); 6143 6144 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6145 scsi_host_put(host); 6146 continue; 6147 } 6148 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6149 if (rc != 0) 6150 scsi_host_put(host); 6151 6152 mutex_unlock(&qla_tgt_mutex); 6153 return rc; 6154 } 6155 mutex_unlock(&qla_tgt_mutex); 6156 6157 return -ENODEV; 6158 } 6159 EXPORT_SYMBOL(qlt_lport_register); 6160 6161 /** 6162 * qla_tgt_lport_deregister - Degister lport 6163 * 6164 * @vha: Registered scsi_qla_host pointer 6165 */ 6166 void qlt_lport_deregister(struct scsi_qla_host *vha) 6167 { 6168 struct qla_hw_data *ha = vha->hw; 6169 struct Scsi_Host *sh = vha->host; 6170 /* 6171 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6172 */ 6173 vha->vha_tgt.target_lport_ptr = NULL; 6174 ha->tgt.tgt_ops = NULL; 6175 /* 6176 * Release the Scsi_Host reference for the underlying qla2xxx host 6177 */ 6178 scsi_host_put(sh); 6179 } 6180 EXPORT_SYMBOL(qlt_lport_deregister); 6181 6182 /* Must be called under HW lock */ 6183 static void qlt_set_mode(struct scsi_qla_host *vha) 6184 { 6185 switch (ql2x_ini_mode) { 6186 case QLA2XXX_INI_MODE_DISABLED: 6187 case QLA2XXX_INI_MODE_EXCLUSIVE: 6188 vha->host->active_mode = MODE_TARGET; 6189 break; 6190 case QLA2XXX_INI_MODE_ENABLED: 6191 vha->host->active_mode = MODE_UNKNOWN; 6192 break; 6193 case QLA2XXX_INI_MODE_DUAL: 6194 vha->host->active_mode = MODE_DUAL; 6195 break; 6196 default: 6197 break; 6198 } 6199 } 6200 6201 /* Must be called under HW lock */ 6202 static void qlt_clear_mode(struct scsi_qla_host *vha) 6203 { 6204 switch (ql2x_ini_mode) { 6205 case QLA2XXX_INI_MODE_DISABLED: 6206 vha->host->active_mode = MODE_UNKNOWN; 6207 break; 6208 case QLA2XXX_INI_MODE_EXCLUSIVE: 6209 vha->host->active_mode = MODE_INITIATOR; 6210 break; 6211 case QLA2XXX_INI_MODE_ENABLED: 6212 case QLA2XXX_INI_MODE_DUAL: 6213 vha->host->active_mode = MODE_INITIATOR; 6214 break; 6215 default: 6216 break; 6217 } 6218 } 6219 6220 /* 6221 * qla_tgt_enable_vha - NO LOCK HELD 6222 * 6223 * host_reset, bring up w/ Target Mode Enabled 6224 */ 6225 void 6226 qlt_enable_vha(struct scsi_qla_host *vha) 6227 { 6228 struct qla_hw_data *ha = vha->hw; 6229 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6230 unsigned long flags; 6231 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6232 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER; 6233 6234 if (!tgt) { 6235 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6236 "Unable to locate qla_tgt pointer from" 6237 " struct qla_hw_data\n"); 6238 dump_stack(); 6239 return; 6240 } 6241 6242 spin_lock_irqsave(&ha->hardware_lock, flags); 6243 tgt->tgt_stopped = 0; 6244 qlt_set_mode(vha); 6245 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6246 6247 if (vha->vp_idx) { 6248 qla24xx_disable_vp(vha); 6249 qla24xx_enable_vp(vha); 6250 } else { 6251 if (ha->msix_entries) { 6252 ql_dbg(ql_dbg_tgt, vha, 0xffff, 6253 "%s: host%ld : vector %d cpu %d\n", 6254 __func__, vha->host_no, 6255 ha->msix_entries[rspq_ent].vector, 6256 ha->msix_entries[rspq_ent].cpuid); 6257 6258 ha->tgt.rspq_vector_cpuid = 6259 ha->msix_entries[rspq_ent].cpuid; 6260 } 6261 6262 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6263 qla2xxx_wake_dpc(base_vha); 6264 qla2x00_wait_for_hba_online(base_vha); 6265 } 6266 } 6267 EXPORT_SYMBOL(qlt_enable_vha); 6268 6269 /* 6270 * qla_tgt_disable_vha - NO LOCK HELD 6271 * 6272 * Disable Target Mode and reset the adapter 6273 */ 6274 static void qlt_disable_vha(struct scsi_qla_host *vha) 6275 { 6276 struct qla_hw_data *ha = vha->hw; 6277 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6278 unsigned long flags; 6279 6280 if (!tgt) { 6281 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6282 "Unable to locate qla_tgt pointer from" 6283 " struct qla_hw_data\n"); 6284 dump_stack(); 6285 return; 6286 } 6287 6288 spin_lock_irqsave(&ha->hardware_lock, flags); 6289 qlt_clear_mode(vha); 6290 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6291 6292 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6293 qla2xxx_wake_dpc(vha); 6294 qla2x00_wait_for_hba_online(vha); 6295 } 6296 6297 /* 6298 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6299 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6300 * members. 6301 */ 6302 void 6303 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6304 { 6305 vha->vha_tgt.qla_tgt = NULL; 6306 6307 mutex_init(&vha->vha_tgt.tgt_mutex); 6308 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6309 6310 qlt_clear_mode(vha); 6311 6312 /* 6313 * NOTE: Currently the value is kept the same for <24xx and 6314 * >=24xx ISPs. If it is necessary to change it, 6315 * the check should be added for specific ISPs, 6316 * assigning the value appropriately. 6317 */ 6318 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6319 6320 qlt_add_target(ha, vha); 6321 } 6322 6323 void 6324 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) 6325 { 6326 /* 6327 * FC-4 Feature bit 0 indicates target functionality to the name server. 6328 */ 6329 if (qla_tgt_mode_enabled(vha)) { 6330 ct_req->req.rff_id.fc4_feature = BIT_0; 6331 } else if (qla_ini_mode_enabled(vha)) { 6332 ct_req->req.rff_id.fc4_feature = BIT_1; 6333 } else if (qla_dual_mode_enabled(vha)) 6334 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; 6335 } 6336 6337 /* 6338 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6339 * @ha: HA context 6340 * 6341 * Beginning of ATIO ring has initialization control block already built 6342 * by nvram config routine. 6343 * 6344 * Returns 0 on success. 6345 */ 6346 void 6347 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6348 { 6349 struct qla_hw_data *ha = vha->hw; 6350 uint16_t cnt; 6351 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6352 6353 if (qla_ini_mode_enabled(vha)) 6354 return; 6355 6356 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6357 pkt->u.raw.signature = ATIO_PROCESSED; 6358 pkt++; 6359 } 6360 6361 } 6362 6363 /* 6364 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6365 * @ha: SCSI driver HA context 6366 */ 6367 void 6368 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6369 { 6370 struct qla_hw_data *ha = vha->hw; 6371 struct atio_from_isp *pkt; 6372 int cnt, i; 6373 6374 if (!ha->flags.fw_started) 6375 return; 6376 6377 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6378 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6379 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6380 cnt = pkt->u.raw.entry_count; 6381 6382 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6383 /* 6384 * This packet is corrupted. The header + payload 6385 * can not be trusted. There is no point in passing 6386 * it further up. 6387 */ 6388 ql_log(ql_log_warn, vha, 0xffff, 6389 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6390 pkt->u.isp24.fcp_hdr.s_id, 6391 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6392 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6393 6394 adjust_corrupted_atio(pkt); 6395 qlt_send_term_exchange(vha, NULL, pkt, ha_locked, 0); 6396 } else { 6397 qlt_24xx_atio_pkt_all_vps(vha, 6398 (struct atio_from_isp *)pkt, ha_locked); 6399 } 6400 6401 for (i = 0; i < cnt; i++) { 6402 ha->tgt.atio_ring_index++; 6403 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6404 ha->tgt.atio_ring_index = 0; 6405 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6406 } else 6407 ha->tgt.atio_ring_ptr++; 6408 6409 pkt->u.raw.signature = ATIO_PROCESSED; 6410 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6411 } 6412 wmb(); 6413 } 6414 6415 /* Adjust ring index */ 6416 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6417 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha)); 6418 } 6419 6420 void 6421 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6422 { 6423 struct qla_hw_data *ha = vha->hw; 6424 if (!QLA_TGT_MODE_ENABLED()) 6425 return; 6426 6427 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6428 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6429 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6430 6431 if (IS_ATIO_MSIX_CAPABLE(ha)) { 6432 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6433 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6434 6435 icb->msix_atio = cpu_to_le16(msix->entry); 6436 ql_dbg(ql_dbg_init, vha, 0xf072, 6437 "Registering ICB vector 0x%x for atio que.\n", 6438 msix->entry); 6439 } 6440 } 6441 6442 void 6443 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6444 { 6445 struct qla_hw_data *ha = vha->hw; 6446 u32 tmp; 6447 u16 t; 6448 6449 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6450 if (!ha->tgt.saved_set) { 6451 /* We save only once */ 6452 ha->tgt.saved_exchange_count = nv->exchange_count; 6453 ha->tgt.saved_firmware_options_1 = 6454 nv->firmware_options_1; 6455 ha->tgt.saved_firmware_options_2 = 6456 nv->firmware_options_2; 6457 ha->tgt.saved_firmware_options_3 = 6458 nv->firmware_options_3; 6459 ha->tgt.saved_set = 1; 6460 } 6461 6462 if (qla_tgt_mode_enabled(vha)) { 6463 nv->exchange_count = cpu_to_le16(0xFFFF); 6464 } else { /* dual */ 6465 if (ql_dm_tgt_ex_pct > 100) { 6466 ql_dm_tgt_ex_pct = 50; 6467 } else if (ql_dm_tgt_ex_pct == 100) { 6468 /* leave some for FW */ 6469 ql_dm_tgt_ex_pct = 95; 6470 } 6471 6472 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct; 6473 tmp = tmp/100; 6474 if (tmp > 0xffff) 6475 tmp = 0xffff; 6476 6477 t = tmp & 0xffff; 6478 nv->exchange_count = cpu_to_le16(t); 6479 } 6480 6481 /* Enable target mode */ 6482 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6483 6484 /* Disable ini mode, if requested */ 6485 if (qla_tgt_mode_enabled(vha)) 6486 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6487 6488 /* Disable Full Login after LIP */ 6489 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6490 /* Enable initial LIP */ 6491 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6492 if (ql2xtgt_tape_enable) 6493 /* Enable FC Tape support */ 6494 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6495 else 6496 /* Disable FC Tape support */ 6497 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6498 6499 /* Disable Full Login after LIP */ 6500 nv->host_p &= cpu_to_le32(~BIT_10); 6501 6502 /* 6503 * clear BIT 15 explicitly as we have seen at least 6504 * a couple of instances where this was set and this 6505 * was causing the firmware to not be initialized. 6506 */ 6507 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6508 /* Enable target PRLI control */ 6509 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6510 } else { 6511 if (ha->tgt.saved_set) { 6512 nv->exchange_count = ha->tgt.saved_exchange_count; 6513 nv->firmware_options_1 = 6514 ha->tgt.saved_firmware_options_1; 6515 nv->firmware_options_2 = 6516 ha->tgt.saved_firmware_options_2; 6517 nv->firmware_options_3 = 6518 ha->tgt.saved_firmware_options_3; 6519 } 6520 return; 6521 } 6522 6523 if (ha->tgt.enable_class_2) { 6524 if (vha->flags.init_done) 6525 fc_host_supported_classes(vha->host) = 6526 FC_COS_CLASS2 | FC_COS_CLASS3; 6527 6528 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6529 } else { 6530 if (vha->flags.init_done) 6531 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6532 6533 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6534 } 6535 } 6536 6537 void 6538 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6539 struct init_cb_24xx *icb) 6540 { 6541 struct qla_hw_data *ha = vha->hw; 6542 6543 if (!QLA_TGT_MODE_ENABLED()) 6544 return; 6545 6546 if (ha->tgt.node_name_set) { 6547 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6548 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6549 } 6550 6551 /* disable ZIO at start time. */ 6552 if (!vha->flags.init_done) { 6553 uint32_t tmp; 6554 tmp = le32_to_cpu(icb->firmware_options_2); 6555 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6556 icb->firmware_options_2 = cpu_to_le32(tmp); 6557 } 6558 } 6559 6560 void 6561 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6562 { 6563 struct qla_hw_data *ha = vha->hw; 6564 u32 tmp; 6565 u16 t; 6566 6567 if (!QLA_TGT_MODE_ENABLED()) 6568 return; 6569 6570 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6571 if (!ha->tgt.saved_set) { 6572 /* We save only once */ 6573 ha->tgt.saved_exchange_count = nv->exchange_count; 6574 ha->tgt.saved_firmware_options_1 = 6575 nv->firmware_options_1; 6576 ha->tgt.saved_firmware_options_2 = 6577 nv->firmware_options_2; 6578 ha->tgt.saved_firmware_options_3 = 6579 nv->firmware_options_3; 6580 ha->tgt.saved_set = 1; 6581 } 6582 6583 if (qla_tgt_mode_enabled(vha)) { 6584 nv->exchange_count = cpu_to_le16(0xFFFF); 6585 } else { /* dual */ 6586 if (ql_dm_tgt_ex_pct > 100) { 6587 ql_dm_tgt_ex_pct = 50; 6588 } else if (ql_dm_tgt_ex_pct == 100) { 6589 /* leave some for FW */ 6590 ql_dm_tgt_ex_pct = 95; 6591 } 6592 6593 tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct; 6594 tmp = tmp/100; 6595 if (tmp > 0xffff) 6596 tmp = 0xffff; 6597 t = tmp & 0xffff; 6598 nv->exchange_count = cpu_to_le16(t); 6599 } 6600 6601 /* Enable target mode */ 6602 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6603 6604 /* Disable ini mode, if requested */ 6605 if (qla_tgt_mode_enabled(vha)) 6606 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6607 /* Disable Full Login after LIP */ 6608 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6609 /* Enable initial LIP */ 6610 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6611 /* 6612 * clear BIT 15 explicitly as we have seen at 6613 * least a couple of instances where this was set 6614 * and this was causing the firmware to not be 6615 * initialized. 6616 */ 6617 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6618 if (ql2xtgt_tape_enable) 6619 /* Enable FC tape support */ 6620 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6621 else 6622 /* Disable FC tape support */ 6623 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6624 6625 /* Disable Full Login after LIP */ 6626 nv->host_p &= cpu_to_le32(~BIT_10); 6627 /* Enable target PRLI control */ 6628 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6629 } else { 6630 if (ha->tgt.saved_set) { 6631 nv->exchange_count = ha->tgt.saved_exchange_count; 6632 nv->firmware_options_1 = 6633 ha->tgt.saved_firmware_options_1; 6634 nv->firmware_options_2 = 6635 ha->tgt.saved_firmware_options_2; 6636 nv->firmware_options_3 = 6637 ha->tgt.saved_firmware_options_3; 6638 } 6639 return; 6640 } 6641 6642 if (ha->tgt.enable_class_2) { 6643 if (vha->flags.init_done) 6644 fc_host_supported_classes(vha->host) = 6645 FC_COS_CLASS2 | FC_COS_CLASS3; 6646 6647 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6648 } else { 6649 if (vha->flags.init_done) 6650 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6651 6652 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6653 } 6654 } 6655 6656 void 6657 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6658 struct init_cb_81xx *icb) 6659 { 6660 struct qla_hw_data *ha = vha->hw; 6661 6662 if (!QLA_TGT_MODE_ENABLED()) 6663 return; 6664 6665 if (ha->tgt.node_name_set) { 6666 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6667 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6668 } 6669 6670 /* disable ZIO at start time. */ 6671 if (!vha->flags.init_done) { 6672 uint32_t tmp; 6673 tmp = le32_to_cpu(icb->firmware_options_2); 6674 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6675 icb->firmware_options_2 = cpu_to_le32(tmp); 6676 } 6677 6678 } 6679 6680 void 6681 qlt_83xx_iospace_config(struct qla_hw_data *ha) 6682 { 6683 if (!QLA_TGT_MODE_ENABLED()) 6684 return; 6685 6686 ha->msix_count += 1; /* For ATIO Q */ 6687 } 6688 6689 int 6690 qlt_24xx_process_response_error(struct scsi_qla_host *vha, 6691 struct sts_entry_24xx *pkt) 6692 { 6693 switch (pkt->entry_type) { 6694 case ABTS_RECV_24XX: 6695 case ABTS_RESP_24XX: 6696 case CTIO_TYPE7: 6697 case NOTIFY_ACK_TYPE: 6698 case CTIO_CRC2: 6699 return 1; 6700 default: 6701 return 0; 6702 } 6703 } 6704 6705 void 6706 qlt_modify_vp_config(struct scsi_qla_host *vha, 6707 struct vp_config_entry_24xx *vpmod) 6708 { 6709 /* enable target mode. Bit5 = 1 => disable */ 6710 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 6711 vpmod->options_idx1 &= ~BIT_5; 6712 6713 /* Disable ini mode, if requested. bit4 = 1 => disable */ 6714 if (qla_tgt_mode_enabled(vha)) 6715 vpmod->options_idx1 &= ~BIT_4; 6716 } 6717 6718 void 6719 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6720 { 6721 int rc; 6722 6723 if (!QLA_TGT_MODE_ENABLED()) 6724 return; 6725 6726 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6727 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6728 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6729 } else { 6730 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6731 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6732 } 6733 6734 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6735 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 6736 6737 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 6738 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 6739 qlt_unknown_atio_work_fn); 6740 6741 qlt_clear_mode(base_vha); 6742 6743 rc = btree_init32(&ha->tgt.host_map); 6744 if (rc) 6745 ql_log(ql_log_info, base_vha, 0xffff, 6746 "Unable to initialize ha->host_map btree\n"); 6747 6748 qlt_update_vp_map(base_vha, SET_VP_IDX); 6749 } 6750 6751 irqreturn_t 6752 qla83xx_msix_atio_q(int irq, void *dev_id) 6753 { 6754 struct rsp_que *rsp; 6755 scsi_qla_host_t *vha; 6756 struct qla_hw_data *ha; 6757 unsigned long flags; 6758 6759 rsp = (struct rsp_que *) dev_id; 6760 ha = rsp->hw; 6761 vha = pci_get_drvdata(ha->pdev); 6762 6763 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6764 6765 qlt_24xx_process_atio_queue(vha, 0); 6766 6767 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6768 6769 return IRQ_HANDLED; 6770 } 6771 6772 static void 6773 qlt_handle_abts_recv_work(struct work_struct *work) 6774 { 6775 struct qla_tgt_sess_op *op = container_of(work, 6776 struct qla_tgt_sess_op, work); 6777 scsi_qla_host_t *vha = op->vha; 6778 struct qla_hw_data *ha = vha->hw; 6779 unsigned long flags; 6780 6781 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset)) 6782 return; 6783 6784 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6785 qlt_24xx_process_atio_queue(vha, 0); 6786 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6787 6788 spin_lock_irqsave(&ha->hardware_lock, flags); 6789 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio); 6790 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6791 6792 kfree(op); 6793 } 6794 6795 void 6796 qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt) 6797 { 6798 struct qla_tgt_sess_op *op; 6799 6800 op = kzalloc(sizeof(*op), GFP_ATOMIC); 6801 6802 if (!op) { 6803 /* do not reach for ATIO queue here. This is best effort err 6804 * recovery at this point. 6805 */ 6806 qlt_response_pkt_all_vps(vha, pkt); 6807 return; 6808 } 6809 6810 memcpy(&op->atio, pkt, sizeof(*pkt)); 6811 op->vha = vha; 6812 op->chip_reset = vha->hw->chip_reset; 6813 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 6814 queue_work(qla_tgt_wq, &op->work); 6815 return; 6816 } 6817 6818 int 6819 qlt_mem_alloc(struct qla_hw_data *ha) 6820 { 6821 if (!QLA_TGT_MODE_ENABLED()) 6822 return 0; 6823 6824 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * 6825 MAX_MULTI_ID_FABRIC, GFP_KERNEL); 6826 if (!ha->tgt.tgt_vp_map) 6827 return -ENOMEM; 6828 6829 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 6830 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 6831 &ha->tgt.atio_dma, GFP_KERNEL); 6832 if (!ha->tgt.atio_ring) { 6833 kfree(ha->tgt.tgt_vp_map); 6834 return -ENOMEM; 6835 } 6836 return 0; 6837 } 6838 6839 void 6840 qlt_mem_free(struct qla_hw_data *ha) 6841 { 6842 if (!QLA_TGT_MODE_ENABLED()) 6843 return; 6844 6845 if (ha->tgt.atio_ring) { 6846 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 6847 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 6848 ha->tgt.atio_dma); 6849 } 6850 kfree(ha->tgt.tgt_vp_map); 6851 } 6852 6853 /* vport_slock to be held by the caller */ 6854 void 6855 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 6856 { 6857 void *slot; 6858 u32 key; 6859 int rc; 6860 6861 if (!QLA_TGT_MODE_ENABLED()) 6862 return; 6863 6864 key = vha->d_id.b24; 6865 6866 switch (cmd) { 6867 case SET_VP_IDX: 6868 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 6869 break; 6870 case SET_AL_PA: 6871 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 6872 if (!slot) { 6873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 6874 "Save vha in host_map %p %06x\n", vha, key); 6875 rc = btree_insert32(&vha->hw->tgt.host_map, 6876 key, vha, GFP_ATOMIC); 6877 if (rc) 6878 ql_log(ql_log_info, vha, 0xffff, 6879 "Unable to insert s_id into host_map: %06x\n", 6880 key); 6881 return; 6882 } 6883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 6884 "replace existing vha in host_map %p %06x\n", vha, key); 6885 btree_update32(&vha->hw->tgt.host_map, key, vha); 6886 break; 6887 case RESET_VP_IDX: 6888 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 6889 break; 6890 case RESET_AL_PA: 6891 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 6892 "clear vha in host_map %p %06x\n", vha, key); 6893 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 6894 if (slot) 6895 btree_remove32(&vha->hw->tgt.host_map, key); 6896 vha->d_id.b24 = 0; 6897 break; 6898 } 6899 } 6900 6901 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 6902 { 6903 unsigned long flags; 6904 struct qla_hw_data *ha = vha->hw; 6905 6906 if (!vha->d_id.b24) { 6907 spin_lock_irqsave(&ha->vport_slock, flags); 6908 vha->d_id = id; 6909 qlt_update_vp_map(vha, SET_AL_PA); 6910 spin_unlock_irqrestore(&ha->vport_slock, flags); 6911 } else if (vha->d_id.b24 != id.b24) { 6912 spin_lock_irqsave(&ha->vport_slock, flags); 6913 qlt_update_vp_map(vha, RESET_AL_PA); 6914 vha->d_id = id; 6915 qlt_update_vp_map(vha, SET_AL_PA); 6916 spin_unlock_irqrestore(&ha->vport_slock, flags); 6917 } 6918 } 6919 6920 static int __init qlt_parse_ini_mode(void) 6921 { 6922 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 6923 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 6924 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 6925 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 6926 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 6927 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 6928 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 6929 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 6930 else 6931 return false; 6932 6933 return true; 6934 } 6935 6936 int __init qlt_init(void) 6937 { 6938 int ret; 6939 6940 if (!qlt_parse_ini_mode()) { 6941 ql_log(ql_log_fatal, NULL, 0xe06b, 6942 "qlt_parse_ini_mode() failed\n"); 6943 return -EINVAL; 6944 } 6945 6946 if (!QLA_TGT_MODE_ENABLED()) 6947 return 0; 6948 6949 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 6950 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 6951 qla_tgt_mgmt_cmd), 0, NULL); 6952 if (!qla_tgt_mgmt_cmd_cachep) { 6953 ql_log(ql_log_fatal, NULL, 0xe06d, 6954 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 6955 return -ENOMEM; 6956 } 6957 6958 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 6959 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 6960 0, NULL); 6961 6962 if (!qla_tgt_plogi_cachep) { 6963 ql_log(ql_log_fatal, NULL, 0xe06d, 6964 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 6965 ret = -ENOMEM; 6966 goto out_mgmt_cmd_cachep; 6967 } 6968 6969 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 6970 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 6971 if (!qla_tgt_mgmt_cmd_mempool) { 6972 ql_log(ql_log_fatal, NULL, 0xe06e, 6973 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 6974 ret = -ENOMEM; 6975 goto out_plogi_cachep; 6976 } 6977 6978 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 6979 if (!qla_tgt_wq) { 6980 ql_log(ql_log_fatal, NULL, 0xe06f, 6981 "alloc_workqueue for qla_tgt_wq failed\n"); 6982 ret = -ENOMEM; 6983 goto out_cmd_mempool; 6984 } 6985 /* 6986 * Return 1 to signal that initiator-mode is being disabled 6987 */ 6988 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 6989 6990 out_cmd_mempool: 6991 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6992 out_plogi_cachep: 6993 kmem_cache_destroy(qla_tgt_plogi_cachep); 6994 out_mgmt_cmd_cachep: 6995 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6996 return ret; 6997 } 6998 6999 void qlt_exit(void) 7000 { 7001 if (!QLA_TGT_MODE_ENABLED()) 7002 return; 7003 7004 destroy_workqueue(qla_tgt_wq); 7005 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7006 kmem_cache_destroy(qla_tgt_plogi_cachep); 7007 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7008 } 7009