1 /* 2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 3 * 4 * based on qla2x00t.c code: 5 * 6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 7 * Copyright (C) 2004 - 2005 Leonid Stoljar 8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 9 * Copyright (C) 2006 - 2010 ID7 Ltd. 10 * 11 * Forward port and refactoring to modern qla2xxx and target/configfs 12 * 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation, version 2 18 * of the License. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/types.h> 29 #include <linux/blkdev.h> 30 #include <linux/interrupt.h> 31 #include <linux/pci.h> 32 #include <linux/delay.h> 33 #include <linux/list.h> 34 #include <linux/workqueue.h> 35 #include <asm/unaligned.h> 36 #include <scsi/scsi.h> 37 #include <scsi/scsi_host.h> 38 #include <scsi/scsi_tcq.h> 39 #include <target/target_core_base.h> 40 #include <target/target_core_fabric.h> 41 42 #include "qla_def.h" 43 #include "qla_target.h" 44 45 static int ql2xtgt_tape_enable; 46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 47 MODULE_PARM_DESC(ql2xtgt_tape_enable, 48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 49 50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 51 module_param(qlini_mode, charp, S_IRUGO); 52 MODULE_PARM_DESC(qlini_mode, 53 "Determines when initiator mode will be enabled. Possible values: " 54 "\"exclusive\" - initiator mode will be enabled on load, " 55 "disabled on enabling target mode and then on disabling target mode " 56 "enabled back; " 57 "\"disabled\" - initiator mode will never be enabled; " 58 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 59 "when ready " 60 "\"enabled\" (default) - initiator mode will always stay enabled."); 61 62 static int ql_dm_tgt_ex_pct = 0; 63 module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR); 64 MODULE_PARM_DESC(ql_dm_tgt_ex_pct, 65 "For Dual Mode (qlini_mode=dual), this parameter determines " 66 "the percentage of exchanges/cmds FW will allocate resources " 67 "for Target mode."); 68 69 int ql2xuctrlirq = 1; 70 module_param(ql2xuctrlirq, int, 0644); 71 MODULE_PARM_DESC(ql2xuctrlirq, 72 "User to control IRQ placement via smp_affinity." 73 "Valid with qlini_mode=disabled." 74 "1(default): enable"); 75 76 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 77 78 static int qla_sam_status = SAM_STAT_BUSY; 79 static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 80 81 /* 82 * From scsi/fc/fc_fcp.h 83 */ 84 enum fcp_resp_rsp_codes { 85 FCP_TMF_CMPL = 0, 86 FCP_DATA_LEN_INVALID = 1, 87 FCP_CMND_FIELDS_INVALID = 2, 88 FCP_DATA_PARAM_MISMATCH = 3, 89 FCP_TMF_REJECTED = 4, 90 FCP_TMF_FAILED = 5, 91 FCP_TMF_INVALID_LUN = 9, 92 }; 93 94 /* 95 * fc_pri_ta from scsi/fc/fc_fcp.h 96 */ 97 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 98 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 99 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 100 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 101 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 102 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 103 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 104 105 /* 106 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 107 * must be called under HW lock and could unlock/lock it inside. 108 * It isn't an issue, since in the current implementation on the time when 109 * those functions are called: 110 * 111 * - Either context is IRQ and only IRQ handler can modify HW data, 112 * including rings related fields, 113 * 114 * - Or access to target mode variables from struct qla_tgt doesn't 115 * cross those functions boundaries, except tgt_stop, which 116 * additionally protected by irq_cmd_count. 117 */ 118 /* Predefs for callbacks handed to qla2xxx LLD */ 119 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 120 struct atio_from_isp *pkt, uint8_t); 121 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 122 response_t *pkt); 123 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 124 int fn, void *iocb, int flags); 125 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 126 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 127 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 128 struct atio_from_isp *atio, uint16_t status, int qfull); 129 static void qlt_disable_vha(struct scsi_qla_host *vha); 130 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 131 static void qlt_send_notify_ack(struct qla_qpair *qpair, 132 struct imm_ntfy_from_isp *ntfy, 133 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 134 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 135 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 136 struct imm_ntfy_from_isp *imm, int ha_locked); 137 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 138 fc_port_t *fcport, bool local); 139 void qlt_unreg_sess(struct fc_port *sess); 140 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 141 struct abts_recv_from_24xx *); 142 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 143 uint16_t); 144 145 /* 146 * Global Variables 147 */ 148 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 149 struct kmem_cache *qla_tgt_plogi_cachep; 150 static mempool_t *qla_tgt_mgmt_cmd_mempool; 151 static struct workqueue_struct *qla_tgt_wq; 152 static DEFINE_MUTEX(qla_tgt_mutex); 153 static LIST_HEAD(qla_tgt_glist); 154 155 static const char *prot_op_str(u32 prot_op) 156 { 157 switch (prot_op) { 158 case TARGET_PROT_NORMAL: return "NORMAL"; 159 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 160 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 161 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 162 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 163 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 164 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 165 default: return "UNKNOWN"; 166 } 167 } 168 169 /* This API intentionally takes dest as a parameter, rather than returning 170 * int value to avoid caller forgetting to issue wmb() after the store */ 171 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 172 { 173 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 174 *dest = atomic_inc_return(&base_vha->generation_tick); 175 /* memory barrier */ 176 wmb(); 177 } 178 179 /* Might release hw lock, then reaquire!! */ 180 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 181 { 182 /* Send marker if required */ 183 if (unlikely(vha->marker_needed != 0)) { 184 int rc = qla2x00_issue_marker(vha, vha_locked); 185 if (rc != QLA_SUCCESS) { 186 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 187 "qla_target(%d): issue_marker() failed\n", 188 vha->vp_idx); 189 } 190 return rc; 191 } 192 return QLA_SUCCESS; 193 } 194 195 static inline 196 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 197 uint8_t *d_id) 198 { 199 struct scsi_qla_host *host; 200 uint32_t key = 0; 201 202 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) && 203 (vha->d_id.b.al_pa == d_id[2])) 204 return vha; 205 206 key = (uint32_t)d_id[0] << 16; 207 key |= (uint32_t)d_id[1] << 8; 208 key |= (uint32_t)d_id[2]; 209 210 host = btree_lookup32(&vha->hw->tgt.host_map, key); 211 if (!host) 212 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 213 "Unable to find host %06x\n", key); 214 215 return host; 216 } 217 218 static inline 219 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 220 uint16_t vp_idx) 221 { 222 struct qla_hw_data *ha = vha->hw; 223 224 if (vha->vp_idx == vp_idx) 225 return vha; 226 227 BUG_ON(ha->tgt.tgt_vp_map == NULL); 228 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 229 return ha->tgt.tgt_vp_map[vp_idx].vha; 230 231 return NULL; 232 } 233 234 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 235 { 236 unsigned long flags; 237 238 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 239 240 vha->hw->tgt.num_pend_cmds++; 241 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 242 vha->qla_stats.stat_max_pend_cmds = 243 vha->hw->tgt.num_pend_cmds; 244 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 245 } 246 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 247 { 248 unsigned long flags; 249 250 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 251 vha->hw->tgt.num_pend_cmds--; 252 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 253 } 254 255 256 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 257 struct atio_from_isp *atio, uint8_t ha_locked) 258 { 259 struct qla_tgt_sess_op *u; 260 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 261 unsigned long flags; 262 263 if (tgt->tgt_stop) { 264 ql_dbg(ql_dbg_async, vha, 0x502c, 265 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 266 vha->vp_idx); 267 goto out_term; 268 } 269 270 u = kzalloc(sizeof(*u), GFP_ATOMIC); 271 if (u == NULL) 272 goto out_term; 273 274 u->vha = vha; 275 memcpy(&u->atio, atio, sizeof(*atio)); 276 INIT_LIST_HEAD(&u->cmd_list); 277 278 spin_lock_irqsave(&vha->cmd_list_lock, flags); 279 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 280 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 281 282 schedule_delayed_work(&vha->unknown_atio_work, 1); 283 284 out: 285 return; 286 287 out_term: 288 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 289 goto out; 290 } 291 292 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 293 uint8_t ha_locked) 294 { 295 struct qla_tgt_sess_op *u, *t; 296 scsi_qla_host_t *host; 297 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 298 unsigned long flags; 299 uint8_t queued = 0; 300 301 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 302 if (u->aborted) { 303 ql_dbg(ql_dbg_async, vha, 0x502e, 304 "Freeing unknown %s %p, because of Abort\n", 305 "ATIO_TYPE7", u); 306 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 307 &u->atio, ha_locked, 0); 308 goto abort; 309 } 310 311 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 312 if (host != NULL) { 313 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 314 "Requeuing unknown ATIO_TYPE7 %p\n", u); 315 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 316 } else if (tgt->tgt_stop) { 317 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 318 "Freeing unknown %s %p, because tgt is being stopped\n", 319 "ATIO_TYPE7", u); 320 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 321 &u->atio, ha_locked, 0); 322 } else { 323 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 324 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 325 if (!queued) { 326 queued = 1; 327 schedule_delayed_work(&vha->unknown_atio_work, 328 1); 329 } 330 continue; 331 } 332 333 abort: 334 spin_lock_irqsave(&vha->cmd_list_lock, flags); 335 list_del(&u->cmd_list); 336 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 337 kfree(u); 338 } 339 } 340 341 void qlt_unknown_atio_work_fn(struct work_struct *work) 342 { 343 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 344 struct scsi_qla_host, unknown_atio_work); 345 346 qlt_try_to_dequeue_unknown_atios(vha, 0); 347 } 348 349 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 350 struct atio_from_isp *atio, uint8_t ha_locked) 351 { 352 ql_dbg(ql_dbg_tgt, vha, 0xe072, 353 "%s: qla_target(%d): type %x ox_id %04x\n", 354 __func__, vha->vp_idx, atio->u.raw.entry_type, 355 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 356 357 switch (atio->u.raw.entry_type) { 358 case ATIO_TYPE7: 359 { 360 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 361 atio->u.isp24.fcp_hdr.d_id); 362 if (unlikely(NULL == host)) { 363 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 364 "qla_target(%d): Received ATIO_TYPE7 " 365 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 366 atio->u.isp24.fcp_hdr.d_id[0], 367 atio->u.isp24.fcp_hdr.d_id[1], 368 atio->u.isp24.fcp_hdr.d_id[2]); 369 370 371 qlt_queue_unknown_atio(vha, atio, ha_locked); 372 break; 373 } 374 if (unlikely(!list_empty(&vha->unknown_atio_list))) 375 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 376 377 qlt_24xx_atio_pkt(host, atio, ha_locked); 378 break; 379 } 380 381 case IMMED_NOTIFY_TYPE: 382 { 383 struct scsi_qla_host *host = vha; 384 struct imm_ntfy_from_isp *entry = 385 (struct imm_ntfy_from_isp *)atio; 386 387 qlt_issue_marker(vha, ha_locked); 388 389 if ((entry->u.isp24.vp_index != 0xFF) && 390 (entry->u.isp24.nport_handle != 0xFFFF)) { 391 host = qlt_find_host_by_vp_idx(vha, 392 entry->u.isp24.vp_index); 393 if (unlikely(!host)) { 394 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 395 "qla_target(%d): Received " 396 "ATIO (IMMED_NOTIFY_TYPE) " 397 "with unknown vp_index %d\n", 398 vha->vp_idx, entry->u.isp24.vp_index); 399 break; 400 } 401 } 402 qlt_24xx_atio_pkt(host, atio, ha_locked); 403 break; 404 } 405 406 case VP_RPT_ID_IOCB_TYPE: 407 qla24xx_report_id_acquisition(vha, 408 (struct vp_rpt_id_entry_24xx *)atio); 409 break; 410 411 case ABTS_RECV_24XX: 412 { 413 struct abts_recv_from_24xx *entry = 414 (struct abts_recv_from_24xx *)atio; 415 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 416 entry->vp_index); 417 unsigned long flags; 418 419 if (unlikely(!host)) { 420 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 421 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 422 "received, with unknown vp_index %d\n", 423 vha->vp_idx, entry->vp_index); 424 break; 425 } 426 if (!ha_locked) 427 spin_lock_irqsave(&host->hw->hardware_lock, flags); 428 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 429 if (!ha_locked) 430 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 431 break; 432 } 433 434 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 435 436 default: 437 ql_dbg(ql_dbg_tgt, vha, 0xe040, 438 "qla_target(%d): Received unknown ATIO atio " 439 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 440 break; 441 } 442 443 return false; 444 } 445 446 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 447 struct rsp_que *rsp, response_t *pkt) 448 { 449 switch (pkt->entry_type) { 450 case CTIO_CRC2: 451 ql_dbg(ql_dbg_tgt, vha, 0xe073, 452 "qla_target(%d):%s: CRC2 Response pkt\n", 453 vha->vp_idx, __func__); 454 /* fall through */ 455 case CTIO_TYPE7: 456 { 457 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 458 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 459 entry->vp_index); 460 if (unlikely(!host)) { 461 ql_dbg(ql_dbg_tgt, vha, 0xe041, 462 "qla_target(%d): Response pkt (CTIO_TYPE7) " 463 "received, with unknown vp_index %d\n", 464 vha->vp_idx, entry->vp_index); 465 break; 466 } 467 qlt_response_pkt(host, rsp, pkt); 468 break; 469 } 470 471 case IMMED_NOTIFY_TYPE: 472 { 473 struct scsi_qla_host *host = vha; 474 struct imm_ntfy_from_isp *entry = 475 (struct imm_ntfy_from_isp *)pkt; 476 477 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 478 if (unlikely(!host)) { 479 ql_dbg(ql_dbg_tgt, vha, 0xe042, 480 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 481 "received, with unknown vp_index %d\n", 482 vha->vp_idx, entry->u.isp24.vp_index); 483 break; 484 } 485 qlt_response_pkt(host, rsp, pkt); 486 break; 487 } 488 489 case NOTIFY_ACK_TYPE: 490 { 491 struct scsi_qla_host *host = vha; 492 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 493 494 if (0xFF != entry->u.isp24.vp_index) { 495 host = qlt_find_host_by_vp_idx(vha, 496 entry->u.isp24.vp_index); 497 if (unlikely(!host)) { 498 ql_dbg(ql_dbg_tgt, vha, 0xe043, 499 "qla_target(%d): Response " 500 "pkt (NOTIFY_ACK_TYPE) " 501 "received, with unknown " 502 "vp_index %d\n", vha->vp_idx, 503 entry->u.isp24.vp_index); 504 break; 505 } 506 } 507 qlt_response_pkt(host, rsp, pkt); 508 break; 509 } 510 511 case ABTS_RECV_24XX: 512 { 513 struct abts_recv_from_24xx *entry = 514 (struct abts_recv_from_24xx *)pkt; 515 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 516 entry->vp_index); 517 if (unlikely(!host)) { 518 ql_dbg(ql_dbg_tgt, vha, 0xe044, 519 "qla_target(%d): Response pkt " 520 "(ABTS_RECV_24XX) received, with unknown " 521 "vp_index %d\n", vha->vp_idx, entry->vp_index); 522 break; 523 } 524 qlt_response_pkt(host, rsp, pkt); 525 break; 526 } 527 528 case ABTS_RESP_24XX: 529 { 530 struct abts_resp_to_24xx *entry = 531 (struct abts_resp_to_24xx *)pkt; 532 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 533 entry->vp_index); 534 if (unlikely(!host)) { 535 ql_dbg(ql_dbg_tgt, vha, 0xe045, 536 "qla_target(%d): Response pkt " 537 "(ABTS_RECV_24XX) received, with unknown " 538 "vp_index %d\n", vha->vp_idx, entry->vp_index); 539 break; 540 } 541 qlt_response_pkt(host, rsp, pkt); 542 break; 543 } 544 545 default: 546 qlt_response_pkt(vha, rsp, pkt); 547 break; 548 } 549 550 } 551 552 /* 553 * All qlt_plogi_ack_t operations are protected by hardware_lock 554 */ 555 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 556 struct imm_ntfy_from_isp *ntfy, int type) 557 { 558 struct qla_work_evt *e; 559 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 560 if (!e) 561 return QLA_FUNCTION_FAILED; 562 563 e->u.nack.fcport = fcport; 564 e->u.nack.type = type; 565 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 566 return qla2x00_post_work(vha, e); 567 } 568 569 static 570 void qla2x00_async_nack_sp_done(void *s, int res) 571 { 572 struct srb *sp = (struct srb *)s; 573 struct scsi_qla_host *vha = sp->vha; 574 unsigned long flags; 575 576 ql_dbg(ql_dbg_disc, vha, 0x20f2, 577 "Async done-%s res %x %8phC type %d\n", 578 sp->name, res, sp->fcport->port_name, sp->type); 579 580 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 581 sp->fcport->flags &= ~FCF_ASYNC_SENT; 582 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 583 584 switch (sp->type) { 585 case SRB_NACK_PLOGI: 586 sp->fcport->login_gen++; 587 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 588 sp->fcport->logout_on_delete = 1; 589 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 590 sp->fcport->send_els_logo = 0; 591 break; 592 593 case SRB_NACK_PRLI: 594 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 595 sp->fcport->deleted = 0; 596 sp->fcport->send_els_logo = 0; 597 598 if (!sp->fcport->login_succ && 599 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 600 sp->fcport->login_succ = 1; 601 602 vha->fcport_count++; 603 604 if (!IS_IIDMA_CAPABLE(vha->hw) || 605 !vha->hw->flags.gpsc_supported) { 606 ql_dbg(ql_dbg_disc, vha, 0x20f3, 607 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 608 __func__, __LINE__, 609 sp->fcport->port_name, 610 vha->fcport_count); 611 sp->fcport->disc_state = DSC_UPD_FCPORT; 612 qla24xx_post_upd_fcport_work(vha, sp->fcport); 613 } else { 614 ql_dbg(ql_dbg_disc, vha, 0x20f5, 615 "%s %d %8phC post gpsc fcp_cnt %d\n", 616 __func__, __LINE__, 617 sp->fcport->port_name, 618 vha->fcport_count); 619 620 qla24xx_post_gpsc_work(vha, sp->fcport); 621 } 622 } 623 break; 624 625 case SRB_NACK_LOGO: 626 sp->fcport->login_gen++; 627 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 628 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 629 break; 630 } 631 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 632 633 sp->free(sp); 634 } 635 636 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 637 struct imm_ntfy_from_isp *ntfy, int type) 638 { 639 int rval = QLA_FUNCTION_FAILED; 640 srb_t *sp; 641 char *c = NULL; 642 643 fcport->flags |= FCF_ASYNC_SENT; 644 switch (type) { 645 case SRB_NACK_PLOGI: 646 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 647 c = "PLOGI"; 648 break; 649 case SRB_NACK_PRLI: 650 fcport->fw_login_state = DSC_LS_PRLI_PEND; 651 fcport->deleted = 0; 652 c = "PRLI"; 653 break; 654 case SRB_NACK_LOGO: 655 fcport->fw_login_state = DSC_LS_LOGO_PEND; 656 c = "LOGO"; 657 break; 658 } 659 660 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 661 if (!sp) 662 goto done; 663 664 sp->type = type; 665 sp->name = "nack"; 666 667 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 668 669 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 670 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 671 sp->done = qla2x00_async_nack_sp_done; 672 673 rval = qla2x00_start_sp(sp); 674 if (rval != QLA_SUCCESS) 675 goto done_free_sp; 676 677 ql_dbg(ql_dbg_disc, vha, 0x20f4, 678 "Async-%s %8phC hndl %x %s\n", 679 sp->name, fcport->port_name, sp->handle, c); 680 681 return rval; 682 683 done_free_sp: 684 sp->free(sp); 685 done: 686 fcport->flags &= ~FCF_ASYNC_SENT; 687 return rval; 688 } 689 690 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 691 { 692 fc_port_t *t; 693 unsigned long flags; 694 695 switch (e->u.nack.type) { 696 case SRB_NACK_PRLI: 697 mutex_lock(&vha->vha_tgt.tgt_mutex); 698 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 699 mutex_unlock(&vha->vha_tgt.tgt_mutex); 700 if (t) { 701 ql_log(ql_log_info, vha, 0xd034, 702 "%s create sess success %p", __func__, t); 703 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 704 /* create sess has an extra kref */ 705 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 706 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 707 } 708 break; 709 } 710 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 711 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); 712 } 713 714 void qla24xx_delete_sess_fn(struct work_struct *work) 715 { 716 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 717 struct qla_hw_data *ha = fcport->vha->hw; 718 unsigned long flags; 719 720 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 721 722 if (fcport->se_sess) { 723 ha->tgt.tgt_ops->shutdown_sess(fcport); 724 ha->tgt.tgt_ops->put_sess(fcport); 725 } else { 726 qlt_unreg_sess(fcport); 727 } 728 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 729 } 730 731 /* 732 * Called from qla2x00_reg_remote_port() 733 */ 734 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 735 { 736 struct qla_hw_data *ha = vha->hw; 737 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 738 struct fc_port *sess = fcport; 739 unsigned long flags; 740 741 if (!vha->hw->tgt.tgt_ops) 742 return; 743 744 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 745 if (tgt->tgt_stop) { 746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 747 return; 748 } 749 750 if (fcport->disc_state == DSC_DELETE_PEND) { 751 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 752 return; 753 } 754 755 if (!sess->se_sess) { 756 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 757 758 mutex_lock(&vha->vha_tgt.tgt_mutex); 759 sess = qlt_create_sess(vha, fcport, false); 760 mutex_unlock(&vha->vha_tgt.tgt_mutex); 761 762 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 763 } else { 764 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 765 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 766 return; 767 } 768 769 if (!kref_get_unless_zero(&sess->sess_kref)) { 770 ql_dbg(ql_dbg_disc, vha, 0x2107, 771 "%s: kref_get fail sess %8phC \n", 772 __func__, sess->port_name); 773 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 774 return; 775 } 776 777 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 778 "qla_target(%u): %ssession for port %8phC " 779 "(loop ID %d) reappeared\n", vha->vp_idx, 780 sess->local ? "local " : "", sess->port_name, sess->loop_id); 781 782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 783 "Reappeared sess %p\n", sess); 784 785 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 786 fcport->loop_id, 787 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 788 } 789 790 if (sess && sess->local) { 791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 792 "qla_target(%u): local session for " 793 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 794 fcport->port_name, sess->loop_id); 795 sess->local = 0; 796 } 797 ha->tgt.tgt_ops->put_sess(sess); 798 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 799 } 800 801 /* 802 * This is a zero-base ref-counting solution, since hardware_lock 803 * guarantees that ref_count is not modified concurrently. 804 * Upon successful return content of iocb is undefined 805 */ 806 static struct qlt_plogi_ack_t * 807 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 808 struct imm_ntfy_from_isp *iocb) 809 { 810 struct qlt_plogi_ack_t *pla; 811 812 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 813 if (pla->id.b24 == id->b24) { 814 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 815 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 816 return pla; 817 } 818 } 819 820 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 821 if (!pla) { 822 ql_dbg(ql_dbg_async, vha, 0x5088, 823 "qla_target(%d): Allocation of plogi_ack failed\n", 824 vha->vp_idx); 825 return NULL; 826 } 827 828 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 829 pla->id = *id; 830 list_add_tail(&pla->list, &vha->plogi_ack_list); 831 832 return pla; 833 } 834 835 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 836 struct qlt_plogi_ack_t *pla) 837 { 838 struct imm_ntfy_from_isp *iocb = &pla->iocb; 839 port_id_t port_id; 840 uint16_t loop_id; 841 fc_port_t *fcport = pla->fcport; 842 843 BUG_ON(!pla->ref_count); 844 pla->ref_count--; 845 846 if (pla->ref_count) 847 return; 848 849 ql_dbg(ql_dbg_disc, vha, 0x5089, 850 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 851 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 852 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 853 iocb->u.isp24.port_id[0], 854 le16_to_cpu(iocb->u.isp24.nport_handle), 855 iocb->u.isp24.exchange_address, iocb->ox_id); 856 857 port_id.b.domain = iocb->u.isp24.port_id[2]; 858 port_id.b.area = iocb->u.isp24.port_id[1]; 859 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 860 port_id.b.rsvd_1 = 0; 861 862 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 863 864 fcport->loop_id = loop_id; 865 fcport->d_id = port_id; 866 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 867 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 868 else 869 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 870 871 list_for_each_entry(fcport, &vha->vp_fcports, list) { 872 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 873 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 874 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 875 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 876 } 877 878 list_del(&pla->list); 879 kmem_cache_free(qla_tgt_plogi_cachep, pla); 880 } 881 882 void 883 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 884 struct fc_port *sess, enum qlt_plogi_link_t link) 885 { 886 struct imm_ntfy_from_isp *iocb = &pla->iocb; 887 /* Inc ref_count first because link might already be pointing at pla */ 888 pla->ref_count++; 889 890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 891 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 892 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 893 sess, link, sess->port_name, 894 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 895 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 896 pla->ref_count, pla, link); 897 898 if (link == QLT_PLOGI_LINK_CONFLICT) { 899 switch (sess->disc_state) { 900 case DSC_DELETED: 901 case DSC_DELETE_PEND: 902 pla->ref_count--; 903 return; 904 default: 905 break; 906 } 907 } 908 909 if (sess->plogi_link[link]) 910 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 911 912 if (link == QLT_PLOGI_LINK_SAME_WWN) 913 pla->fcport = sess; 914 915 sess->plogi_link[link] = pla; 916 } 917 918 typedef struct { 919 /* These fields must be initialized by the caller */ 920 port_id_t id; 921 /* 922 * number of cmds dropped while we were waiting for 923 * initiator to ack LOGO initialize to 1 if LOGO is 924 * triggered by a command, otherwise, to 0 925 */ 926 int cmd_count; 927 928 /* These fields are used by callee */ 929 struct list_head list; 930 } qlt_port_logo_t; 931 932 static void 933 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 934 { 935 qlt_port_logo_t *tmp; 936 int res; 937 938 mutex_lock(&vha->vha_tgt.tgt_mutex); 939 940 list_for_each_entry(tmp, &vha->logo_list, list) { 941 if (tmp->id.b24 == logo->id.b24) { 942 tmp->cmd_count += logo->cmd_count; 943 mutex_unlock(&vha->vha_tgt.tgt_mutex); 944 return; 945 } 946 } 947 948 list_add_tail(&logo->list, &vha->logo_list); 949 950 mutex_unlock(&vha->vha_tgt.tgt_mutex); 951 952 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 953 954 mutex_lock(&vha->vha_tgt.tgt_mutex); 955 list_del(&logo->list); 956 mutex_unlock(&vha->vha_tgt.tgt_mutex); 957 958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 959 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 960 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 961 logo->cmd_count, res); 962 } 963 964 static void qlt_free_session_done(struct work_struct *work) 965 { 966 struct fc_port *sess = container_of(work, struct fc_port, 967 free_work); 968 struct qla_tgt *tgt = sess->tgt; 969 struct scsi_qla_host *vha = sess->vha; 970 struct qla_hw_data *ha = vha->hw; 971 unsigned long flags; 972 bool logout_started = false; 973 scsi_qla_host_t *base_vha; 974 struct qlt_plogi_ack_t *own = 975 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 976 977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 978 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 979 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 980 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 981 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 982 sess->logout_on_delete, sess->keep_nport_handle, 983 sess->send_els_logo); 984 985 if (!IS_SW_RESV_ADDR(sess->d_id)) { 986 if (sess->send_els_logo) { 987 qlt_port_logo_t logo; 988 989 logo.id = sess->d_id; 990 logo.cmd_count = 0; 991 sess->send_els_logo = 0; 992 qlt_send_first_logo(vha, &logo); 993 } 994 995 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 996 int rc; 997 998 if (!own || 999 (own && 1000 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 1001 rc = qla2x00_post_async_logout_work(vha, sess, 1002 NULL); 1003 if (rc != QLA_SUCCESS) 1004 ql_log(ql_log_warn, vha, 0xf085, 1005 "Schedule logo failed sess %p rc %d\n", 1006 sess, rc); 1007 else 1008 logout_started = true; 1009 } else if (own && (own->iocb.u.isp24.status_subcode == 1010 ELS_PRLI) && ha->flags.rida_fmt2) { 1011 rc = qla2x00_post_async_prlo_work(vha, sess, 1012 NULL); 1013 if (rc != QLA_SUCCESS) 1014 ql_log(ql_log_warn, vha, 0xf085, 1015 "Schedule PRLO failed sess %p rc %d\n", 1016 sess, rc); 1017 else 1018 logout_started = true; 1019 } 1020 } 1021 } 1022 1023 /* 1024 * Release the target session for FC Nexus from fabric module code. 1025 */ 1026 if (sess->se_sess != NULL) 1027 ha->tgt.tgt_ops->free_session(sess); 1028 1029 if (logout_started) { 1030 bool traced = false; 1031 1032 while (!READ_ONCE(sess->logout_completed)) { 1033 if (!traced) { 1034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 1035 "%s: waiting for sess %p logout\n", 1036 __func__, sess); 1037 traced = true; 1038 } 1039 msleep(100); 1040 } 1041 1042 ql_dbg(ql_dbg_disc, vha, 0xf087, 1043 "%s: sess %p logout completed\n", __func__, sess); 1044 } 1045 1046 if (sess->logo_ack_needed) { 1047 sess->logo_ack_needed = 0; 1048 qla24xx_async_notify_ack(vha, sess, 1049 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1050 } 1051 1052 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1053 if (sess->se_sess) { 1054 sess->se_sess = NULL; 1055 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1056 tgt->sess_count--; 1057 } 1058 1059 sess->disc_state = DSC_DELETED; 1060 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1061 sess->deleted = QLA_SESS_DELETED; 1062 sess->login_retry = vha->hw->login_retry_count; 1063 1064 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1065 vha->fcport_count--; 1066 sess->login_succ = 0; 1067 } 1068 1069 qla2x00_clear_loop_id(sess); 1070 1071 if (sess->conflict) { 1072 sess->conflict->login_pause = 0; 1073 sess->conflict = NULL; 1074 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1075 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1076 } 1077 1078 { 1079 struct qlt_plogi_ack_t *con = 1080 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1081 struct imm_ntfy_from_isp *iocb; 1082 1083 if (con) { 1084 iocb = &con->iocb; 1085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1086 "se_sess %p / sess %p port %8phC is gone," 1087 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1088 sess->se_sess, sess, sess->port_name, 1089 own ? "releasing own PLOGI" : "no own PLOGI pending", 1090 own ? own->ref_count : -1, 1091 iocb->u.isp24.port_name, con->ref_count); 1092 qlt_plogi_ack_unref(vha, con); 1093 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1094 } else { 1095 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1096 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1097 sess->se_sess, sess, sess->port_name, 1098 own ? "releasing own PLOGI" : 1099 "no own PLOGI pending", 1100 own ? own->ref_count : -1); 1101 } 1102 1103 if (own) { 1104 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1105 qlt_plogi_ack_unref(vha, own); 1106 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1107 } 1108 } 1109 1110 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1111 1112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1113 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1114 sess, sess->port_name, vha->fcport_count); 1115 1116 if (tgt && (tgt->sess_count == 0)) 1117 wake_up_all(&tgt->waitQ); 1118 1119 if (vha->fcport_count == 0) 1120 wake_up_all(&vha->fcport_waitQ); 1121 1122 base_vha = pci_get_drvdata(ha->pdev); 1123 1124 sess->free_pending = 0; 1125 1126 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1127 return; 1128 1129 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1130 switch (vha->host->active_mode) { 1131 case MODE_INITIATOR: 1132 case MODE_DUAL: 1133 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1134 qla2xxx_wake_dpc(vha); 1135 break; 1136 case MODE_TARGET: 1137 default: 1138 /* no-op */ 1139 break; 1140 } 1141 } 1142 } 1143 1144 /* ha->tgt.sess_lock supposed to be held on entry */ 1145 void qlt_unreg_sess(struct fc_port *sess) 1146 { 1147 struct scsi_qla_host *vha = sess->vha; 1148 unsigned long flags; 1149 1150 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1151 "%s sess %p for deletion %8phC\n", 1152 __func__, sess, sess->port_name); 1153 1154 spin_lock_irqsave(&sess->vha->work_lock, flags); 1155 if (sess->free_pending) { 1156 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1157 return; 1158 } 1159 sess->free_pending = 1; 1160 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1161 1162 if (sess->se_sess) 1163 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1164 1165 qla2x00_mark_device_lost(vha, sess, 1, 1); 1166 1167 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1168 sess->disc_state = DSC_DELETE_PEND; 1169 sess->last_rscn_gen = sess->rscn_gen; 1170 sess->last_login_gen = sess->login_gen; 1171 1172 if (sess->nvme_flag & NVME_FLAG_REGISTERED) 1173 schedule_work(&sess->nvme_del_work); 1174 1175 INIT_WORK(&sess->free_work, qlt_free_session_done); 1176 schedule_work(&sess->free_work); 1177 } 1178 EXPORT_SYMBOL(qlt_unreg_sess); 1179 1180 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1181 { 1182 struct qla_hw_data *ha = vha->hw; 1183 struct fc_port *sess = NULL; 1184 uint16_t loop_id; 1185 int res = 0; 1186 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1187 unsigned long flags; 1188 1189 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1190 if (loop_id == 0xFFFF) { 1191 /* Global event */ 1192 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1193 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1194 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1195 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1196 } else { 1197 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1198 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1199 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1200 } 1201 1202 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1203 "Using sess for qla_tgt_reset: %p\n", sess); 1204 if (!sess) { 1205 res = -ESRCH; 1206 return res; 1207 } 1208 1209 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1210 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1211 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1212 mcmd, loop_id); 1213 1214 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1215 } 1216 1217 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1218 { 1219 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1220 sess->logout_on_delete = 0; 1221 sess->logo_ack_needed = 0; 1222 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1223 sess->scan_state = 0; 1224 } 1225 } 1226 1227 /* ha->tgt.sess_lock supposed to be held on entry */ 1228 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1229 { 1230 struct qla_tgt *tgt = sess->tgt; 1231 unsigned long flags; 1232 1233 if (sess->disc_state == DSC_DELETE_PEND) 1234 return; 1235 1236 if (sess->disc_state == DSC_DELETED) { 1237 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1238 wake_up_all(&tgt->waitQ); 1239 if (sess->vha->fcport_count == 0) 1240 wake_up_all(&sess->vha->fcport_waitQ); 1241 1242 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1243 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1244 return; 1245 } 1246 1247 if (sess->deleted == QLA_SESS_DELETED) 1248 sess->logout_on_delete = 0; 1249 1250 spin_lock_irqsave(&sess->vha->work_lock, flags); 1251 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1252 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1253 return; 1254 } 1255 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1256 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1257 1258 sess->disc_state = DSC_DELETE_PEND; 1259 1260 qla24xx_chk_fcp_state(sess); 1261 1262 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1263 "Scheduling sess %p for deletion\n", sess); 1264 1265 /* use cancel to push work element through before re-queue */ 1266 cancel_work_sync(&sess->del_work); 1267 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn); 1268 queue_work(sess->vha->hw->wq, &sess->del_work); 1269 } 1270 1271 /* ha->tgt.sess_lock supposed to be held on entry */ 1272 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1273 { 1274 struct fc_port *sess; 1275 scsi_qla_host_t *vha = tgt->vha; 1276 1277 list_for_each_entry(sess, &vha->vp_fcports, list) { 1278 if (sess->se_sess) 1279 qlt_schedule_sess_for_deletion(sess); 1280 } 1281 1282 /* At this point tgt could be already dead */ 1283 } 1284 1285 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1286 uint16_t *loop_id) 1287 { 1288 struct qla_hw_data *ha = vha->hw; 1289 dma_addr_t gid_list_dma; 1290 struct gid_list_info *gid_list; 1291 char *id_iter; 1292 int res, rc, i; 1293 uint16_t entries; 1294 1295 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1296 &gid_list_dma, GFP_KERNEL); 1297 if (!gid_list) { 1298 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1299 "qla_target(%d): DMA Alloc failed of %u\n", 1300 vha->vp_idx, qla2x00_gid_list_size(ha)); 1301 return -ENOMEM; 1302 } 1303 1304 /* Get list of logged in devices */ 1305 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1306 if (rc != QLA_SUCCESS) { 1307 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1308 "qla_target(%d): get_id_list() failed: %x\n", 1309 vha->vp_idx, rc); 1310 res = -EBUSY; 1311 goto out_free_id_list; 1312 } 1313 1314 id_iter = (char *)gid_list; 1315 res = -ENOENT; 1316 for (i = 0; i < entries; i++) { 1317 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1318 if ((gid->al_pa == s_id[2]) && 1319 (gid->area == s_id[1]) && 1320 (gid->domain == s_id[0])) { 1321 *loop_id = le16_to_cpu(gid->loop_id); 1322 res = 0; 1323 break; 1324 } 1325 id_iter += ha->gid_list_info_size; 1326 } 1327 1328 out_free_id_list: 1329 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1330 gid_list, gid_list_dma); 1331 return res; 1332 } 1333 1334 /* 1335 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1336 * Caller must put it. 1337 */ 1338 static struct fc_port *qlt_create_sess( 1339 struct scsi_qla_host *vha, 1340 fc_port_t *fcport, 1341 bool local) 1342 { 1343 struct qla_hw_data *ha = vha->hw; 1344 struct fc_port *sess = fcport; 1345 unsigned long flags; 1346 1347 if (vha->vha_tgt.qla_tgt->tgt_stop) 1348 return NULL; 1349 1350 if (fcport->se_sess) { 1351 if (!kref_get_unless_zero(&sess->sess_kref)) { 1352 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1353 "%s: kref_get_unless_zero failed for %8phC\n", 1354 __func__, sess->port_name); 1355 return NULL; 1356 } 1357 return fcport; 1358 } 1359 sess->tgt = vha->vha_tgt.qla_tgt; 1360 sess->local = local; 1361 1362 /* 1363 * Under normal circumstances we want to logout from firmware when 1364 * session eventually ends and release corresponding nport handle. 1365 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1366 * code will adjust these flags as necessary. 1367 */ 1368 sess->logout_on_delete = 1; 1369 sess->keep_nport_handle = 0; 1370 sess->logout_completed = 0; 1371 1372 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1373 &fcport->port_name[0], sess) < 0) { 1374 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1375 "(%d) %8phC check_initiator_node_acl failed\n", 1376 vha->vp_idx, fcport->port_name); 1377 return NULL; 1378 } else { 1379 kref_init(&fcport->sess_kref); 1380 /* 1381 * Take an extra reference to ->sess_kref here to handle 1382 * fc_port access across ->tgt.sess_lock reaquire. 1383 */ 1384 if (!kref_get_unless_zero(&sess->sess_kref)) { 1385 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1386 "%s: kref_get_unless_zero failed for %8phC\n", 1387 __func__, sess->port_name); 1388 return NULL; 1389 } 1390 1391 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1392 if (!IS_SW_RESV_ADDR(sess->d_id)) 1393 vha->vha_tgt.qla_tgt->sess_count++; 1394 1395 qlt_do_generation_tick(vha, &sess->generation); 1396 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1397 } 1398 1399 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1400 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1401 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1402 vha->vha_tgt.qla_tgt->sess_count); 1403 1404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1405 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1406 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1407 vha->vp_idx, local ? "local " : "", fcport->port_name, 1408 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1409 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1410 1411 return sess; 1412 } 1413 1414 /* 1415 * max_gen - specifies maximum session generation 1416 * at which this deletion requestion is still valid 1417 */ 1418 void 1419 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1420 { 1421 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1422 struct fc_port *sess = fcport; 1423 unsigned long flags; 1424 1425 if (!vha->hw->tgt.tgt_ops) 1426 return; 1427 1428 if (!tgt) 1429 return; 1430 1431 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1432 if (tgt->tgt_stop) { 1433 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1434 return; 1435 } 1436 if (!sess->se_sess) { 1437 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1438 return; 1439 } 1440 1441 if (max_gen - sess->generation < 0) { 1442 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1444 "Ignoring stale deletion request for se_sess %p / sess %p" 1445 " for port %8phC, req_gen %d, sess_gen %d\n", 1446 sess->se_sess, sess, sess->port_name, max_gen, 1447 sess->generation); 1448 return; 1449 } 1450 1451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1452 1453 sess->local = 1; 1454 qlt_schedule_sess_for_deletion(sess); 1455 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1456 } 1457 1458 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1459 { 1460 struct qla_hw_data *ha = tgt->ha; 1461 unsigned long flags; 1462 int res; 1463 /* 1464 * We need to protect against race, when tgt is freed before or 1465 * inside wake_up() 1466 */ 1467 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1468 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1469 "tgt %p, sess_count=%d\n", 1470 tgt, tgt->sess_count); 1471 res = (tgt->sess_count == 0); 1472 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1473 1474 return res; 1475 } 1476 1477 /* Called by tcm_qla2xxx configfs code */ 1478 int qlt_stop_phase1(struct qla_tgt *tgt) 1479 { 1480 struct scsi_qla_host *vha = tgt->vha; 1481 struct qla_hw_data *ha = tgt->ha; 1482 unsigned long flags; 1483 1484 mutex_lock(&qla_tgt_mutex); 1485 if (!vha->fc_vport) { 1486 struct Scsi_Host *sh = vha->host; 1487 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 1488 bool npiv_vports; 1489 1490 spin_lock_irqsave(sh->host_lock, flags); 1491 npiv_vports = (fc_host->npiv_vports_inuse); 1492 spin_unlock_irqrestore(sh->host_lock, flags); 1493 1494 if (npiv_vports) { 1495 mutex_unlock(&qla_tgt_mutex); 1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 1497 "NPIV is in use. Can not stop target\n"); 1498 return -EPERM; 1499 } 1500 } 1501 if (tgt->tgt_stop || tgt->tgt_stopped) { 1502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1503 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1504 mutex_unlock(&qla_tgt_mutex); 1505 return -EPERM; 1506 } 1507 1508 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1509 vha->host_no, vha); 1510 /* 1511 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1512 * Lock is needed, because we still can get an incoming packet. 1513 */ 1514 mutex_lock(&vha->vha_tgt.tgt_mutex); 1515 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1516 tgt->tgt_stop = 1; 1517 qlt_clear_tgt_db(tgt); 1518 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1519 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1520 mutex_unlock(&qla_tgt_mutex); 1521 1522 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1523 "Waiting for sess works (tgt %p)", tgt); 1524 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1525 while (!list_empty(&tgt->sess_works_list)) { 1526 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1527 flush_scheduled_work(); 1528 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1529 } 1530 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1531 1532 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1533 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1534 1535 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1536 1537 /* Big hammer */ 1538 if (!ha->flags.host_shutting_down && 1539 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1540 qlt_disable_vha(vha); 1541 1542 /* Wait for sessions to clear out (just in case) */ 1543 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1544 return 0; 1545 } 1546 EXPORT_SYMBOL(qlt_stop_phase1); 1547 1548 /* Called by tcm_qla2xxx configfs code */ 1549 void qlt_stop_phase2(struct qla_tgt *tgt) 1550 { 1551 scsi_qla_host_t *vha = tgt->vha; 1552 1553 if (tgt->tgt_stopped) { 1554 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1555 "Already in tgt->tgt_stopped state\n"); 1556 dump_stack(); 1557 return; 1558 } 1559 if (!tgt->tgt_stop) { 1560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1561 "%s: phase1 stop is not completed\n", __func__); 1562 dump_stack(); 1563 return; 1564 } 1565 1566 mutex_lock(&vha->vha_tgt.tgt_mutex); 1567 tgt->tgt_stop = 0; 1568 tgt->tgt_stopped = 1; 1569 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1570 1571 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1572 tgt); 1573 } 1574 EXPORT_SYMBOL(qlt_stop_phase2); 1575 1576 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1577 static void qlt_release(struct qla_tgt *tgt) 1578 { 1579 scsi_qla_host_t *vha = tgt->vha; 1580 void *node; 1581 u64 key = 0; 1582 u16 i; 1583 struct qla_qpair_hint *h; 1584 struct qla_hw_data *ha = vha->hw; 1585 1586 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop && 1587 !tgt->tgt_stopped) 1588 qlt_stop_phase1(tgt); 1589 1590 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1591 qlt_stop_phase2(tgt); 1592 1593 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1594 unsigned long flags; 1595 1596 h = &tgt->qphints[i]; 1597 if (h->qpair) { 1598 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1599 list_del(&h->hint_elem); 1600 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1601 h->qpair = NULL; 1602 } 1603 } 1604 kfree(tgt->qphints); 1605 mutex_lock(&qla_tgt_mutex); 1606 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1607 mutex_unlock(&qla_tgt_mutex); 1608 1609 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1610 btree_remove64(&tgt->lun_qpair_map, key); 1611 1612 btree_destroy64(&tgt->lun_qpair_map); 1613 1614 if (vha->vp_idx) 1615 if (ha->tgt.tgt_ops && 1616 ha->tgt.tgt_ops->remove_target && 1617 vha->vha_tgt.target_lport_ptr) 1618 ha->tgt.tgt_ops->remove_target(vha); 1619 1620 vha->vha_tgt.qla_tgt = NULL; 1621 1622 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1623 "Release of tgt %p finished\n", tgt); 1624 1625 kfree(tgt); 1626 } 1627 1628 /* ha->hardware_lock supposed to be held on entry */ 1629 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1630 const void *param, unsigned int param_size) 1631 { 1632 struct qla_tgt_sess_work_param *prm; 1633 unsigned long flags; 1634 1635 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1636 if (!prm) { 1637 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1638 "qla_target(%d): Unable to create session " 1639 "work, command will be refused", 0); 1640 return -ENOMEM; 1641 } 1642 1643 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1644 "Scheduling work (type %d, prm %p)" 1645 " to find session for param %p (size %d, tgt %p)\n", 1646 type, prm, param, param_size, tgt); 1647 1648 prm->type = type; 1649 memcpy(&prm->tm_iocb, param, param_size); 1650 1651 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1652 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1653 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1654 1655 schedule_work(&tgt->sess_work); 1656 1657 return 0; 1658 } 1659 1660 /* 1661 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1662 */ 1663 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1664 struct imm_ntfy_from_isp *ntfy, 1665 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1666 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1667 { 1668 struct scsi_qla_host *vha = qpair->vha; 1669 struct qla_hw_data *ha = vha->hw; 1670 request_t *pkt; 1671 struct nack_to_isp *nack; 1672 1673 if (!ha->flags.fw_started) 1674 return; 1675 1676 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1677 1678 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1679 if (!pkt) { 1680 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1681 "qla_target(%d): %s failed: unable to allocate " 1682 "request packet\n", vha->vp_idx, __func__); 1683 return; 1684 } 1685 1686 if (vha->vha_tgt.qla_tgt != NULL) 1687 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1688 1689 pkt->entry_type = NOTIFY_ACK_TYPE; 1690 pkt->entry_count = 1; 1691 1692 nack = (struct nack_to_isp *)pkt; 1693 nack->ox_id = ntfy->ox_id; 1694 1695 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1696 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1697 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1698 nack->u.isp24.flags = ntfy->u.isp24.flags & 1699 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1700 } 1701 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1702 nack->u.isp24.status = ntfy->u.isp24.status; 1703 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1704 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1705 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1706 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1707 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1708 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1709 nack->u.isp24.srr_reject_code = srr_reject_code; 1710 nack->u.isp24.srr_reject_code_expl = srr_explan; 1711 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1712 1713 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1714 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1715 vha->vp_idx, nack->u.isp24.status); 1716 1717 /* Memory Barrier */ 1718 wmb(); 1719 qla2x00_start_iocbs(vha, qpair->req); 1720 } 1721 1722 /* 1723 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1724 */ 1725 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1726 struct abts_recv_from_24xx *abts, uint32_t status, 1727 bool ids_reversed) 1728 { 1729 struct scsi_qla_host *vha = qpair->vha; 1730 struct qla_hw_data *ha = vha->hw; 1731 struct abts_resp_to_24xx *resp; 1732 uint32_t f_ctl; 1733 uint8_t *p; 1734 1735 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1736 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1737 ha, abts, status); 1738 1739 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1740 NULL); 1741 if (!resp) { 1742 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1743 "qla_target(%d): %s failed: unable to allocate " 1744 "request packet", vha->vp_idx, __func__); 1745 return; 1746 } 1747 1748 resp->entry_type = ABTS_RESP_24XX; 1749 resp->entry_count = 1; 1750 resp->nport_handle = abts->nport_handle; 1751 resp->vp_index = vha->vp_idx; 1752 resp->sof_type = abts->sof_type; 1753 resp->exchange_address = abts->exchange_address; 1754 resp->fcp_hdr_le = abts->fcp_hdr_le; 1755 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1756 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1757 F_CTL_SEQ_INITIATIVE); 1758 p = (uint8_t *)&f_ctl; 1759 resp->fcp_hdr_le.f_ctl[0] = *p++; 1760 resp->fcp_hdr_le.f_ctl[1] = *p++; 1761 resp->fcp_hdr_le.f_ctl[2] = *p; 1762 if (ids_reversed) { 1763 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1764 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1765 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1766 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1767 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1768 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1769 } else { 1770 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1771 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1772 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1773 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1774 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1775 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1776 } 1777 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1778 if (status == FCP_TMF_CMPL) { 1779 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1780 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1781 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1782 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1783 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1784 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1785 } else { 1786 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1787 resp->payload.ba_rjt.reason_code = 1788 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1789 /* Other bytes are zero */ 1790 } 1791 1792 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1793 1794 /* Memory Barrier */ 1795 wmb(); 1796 if (qpair->reqq_start_iocbs) 1797 qpair->reqq_start_iocbs(qpair); 1798 else 1799 qla2x00_start_iocbs(vha, qpair->req); 1800 } 1801 1802 /* 1803 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1804 */ 1805 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1806 struct abts_resp_from_24xx_fw *entry) 1807 { 1808 struct ctio7_to_24xx *ctio; 1809 1810 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1811 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1812 1813 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready( 1814 vha->hw->base_qpair, NULL); 1815 if (ctio == NULL) { 1816 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1817 "qla_target(%d): %s failed: unable to allocate " 1818 "request packet\n", vha->vp_idx, __func__); 1819 return; 1820 } 1821 1822 /* 1823 * We've got on entrance firmware's response on by us generated 1824 * ABTS response. So, in it ID fields are reversed. 1825 */ 1826 1827 ctio->entry_type = CTIO_TYPE7; 1828 ctio->entry_count = 1; 1829 ctio->nport_handle = entry->nport_handle; 1830 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1831 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1832 ctio->vp_index = vha->vp_idx; 1833 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1834 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1835 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1836 ctio->exchange_addr = entry->exchange_addr_to_abort; 1837 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1838 CTIO7_FLAGS_TERMINATE); 1839 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1840 1841 /* Memory Barrier */ 1842 wmb(); 1843 qla2x00_start_iocbs(vha, vha->req); 1844 1845 qlt_24xx_send_abts_resp(vha->hw->base_qpair, 1846 (struct abts_recv_from_24xx *)entry, 1847 FCP_TMF_CMPL, true); 1848 } 1849 1850 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1851 { 1852 struct qla_tgt_sess_op *op; 1853 struct qla_tgt_cmd *cmd; 1854 unsigned long flags; 1855 1856 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1857 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1858 if (tag == op->atio.u.isp24.exchange_addr) { 1859 op->aborted = true; 1860 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1861 return 1; 1862 } 1863 } 1864 1865 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1866 if (tag == op->atio.u.isp24.exchange_addr) { 1867 op->aborted = true; 1868 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1869 return 1; 1870 } 1871 } 1872 1873 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1874 if (tag == cmd->atio.u.isp24.exchange_addr) { 1875 cmd->aborted = 1; 1876 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1877 return 1; 1878 } 1879 } 1880 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1881 1882 return 0; 1883 } 1884 1885 /* drop cmds for the given lun 1886 * XXX only looks for cmds on the port through which lun reset was recieved 1887 * XXX does not go through the list of other port (which may have cmds 1888 * for the same lun) 1889 */ 1890 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1891 u64 lun, uint8_t *s_id) 1892 { 1893 struct qla_tgt_sess_op *op; 1894 struct qla_tgt_cmd *cmd; 1895 uint32_t key; 1896 unsigned long flags; 1897 1898 key = sid_to_key(s_id); 1899 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1900 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1901 uint32_t op_key; 1902 u64 op_lun; 1903 1904 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1905 op_lun = scsilun_to_int( 1906 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1907 if (op_key == key && op_lun == lun) 1908 op->aborted = true; 1909 } 1910 1911 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1912 uint32_t op_key; 1913 u64 op_lun; 1914 1915 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1916 op_lun = scsilun_to_int( 1917 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1918 if (op_key == key && op_lun == lun) 1919 op->aborted = true; 1920 } 1921 1922 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1923 uint32_t cmd_key; 1924 u64 cmd_lun; 1925 1926 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1927 cmd_lun = scsilun_to_int( 1928 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1929 if (cmd_key == key && cmd_lun == lun) 1930 cmd->aborted = 1; 1931 } 1932 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1933 } 1934 1935 /* ha->hardware_lock supposed to be held on entry */ 1936 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1937 struct abts_recv_from_24xx *abts, struct fc_port *sess) 1938 { 1939 struct qla_hw_data *ha = vha->hw; 1940 struct qla_tgt_mgmt_cmd *mcmd; 1941 int rc; 1942 1943 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 1944 /* send TASK_ABORT response immediately */ 1945 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false); 1946 return 0; 1947 } 1948 1949 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 1950 "qla_target(%d): task abort (tag=%d)\n", 1951 vha->vp_idx, abts->exchange_addr_to_abort); 1952 1953 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 1954 if (mcmd == NULL) { 1955 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 1956 "qla_target(%d): %s: Allocation of ABORT cmd failed", 1957 vha->vp_idx, __func__); 1958 return -ENOMEM; 1959 } 1960 memset(mcmd, 0, sizeof(*mcmd)); 1961 1962 mcmd->sess = sess; 1963 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 1964 mcmd->reset_count = ha->base_qpair->chip_reset; 1965 mcmd->tmr_func = QLA_TGT_ABTS; 1966 mcmd->qpair = ha->base_qpair; 1967 mcmd->vha = vha; 1968 1969 /* 1970 * LUN is looked up by target-core internally based on the passed 1971 * abts->exchange_addr_to_abort tag. 1972 */ 1973 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func, 1974 abts->exchange_addr_to_abort); 1975 if (rc != 0) { 1976 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, 1977 "qla_target(%d): tgt_ops->handle_tmr()" 1978 " failed: %d", vha->vp_idx, rc); 1979 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1980 return -EFAULT; 1981 } 1982 1983 return 0; 1984 } 1985 1986 /* 1987 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1988 */ 1989 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1990 struct abts_recv_from_24xx *abts) 1991 { 1992 struct qla_hw_data *ha = vha->hw; 1993 struct fc_port *sess; 1994 uint32_t tag = abts->exchange_addr_to_abort; 1995 uint8_t s_id[3]; 1996 int rc; 1997 unsigned long flags; 1998 1999 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2000 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2001 "qla_target(%d): ABTS: Abort Sequence not " 2002 "supported\n", vha->vp_idx); 2003 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2004 false); 2005 return; 2006 } 2007 2008 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2009 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2010 "qla_target(%d): ABTS: Unknown Exchange " 2011 "Address received\n", vha->vp_idx); 2012 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2013 false); 2014 return; 2015 } 2016 2017 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2018 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2019 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 2020 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 2021 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2022 2023 s_id[0] = abts->fcp_hdr_le.s_id[2]; 2024 s_id[1] = abts->fcp_hdr_le.s_id[1]; 2025 s_id[2] = abts->fcp_hdr_le.s_id[0]; 2026 2027 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2028 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2029 if (!sess) { 2030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2031 "qla_target(%d): task abort for non-existant session\n", 2032 vha->vp_idx); 2033 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2034 2035 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2036 false); 2037 return; 2038 } 2039 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2040 2041 2042 if (sess->deleted) { 2043 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2044 false); 2045 return; 2046 } 2047 2048 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2049 if (rc != 0) { 2050 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2051 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2052 vha->vp_idx, rc); 2053 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2054 false); 2055 return; 2056 } 2057 } 2058 2059 /* 2060 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2061 */ 2062 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2063 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2064 { 2065 struct scsi_qla_host *ha = mcmd->vha; 2066 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2067 struct ctio7_to_24xx *ctio; 2068 uint16_t temp; 2069 2070 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2071 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2072 ha, atio, resp_code); 2073 2074 2075 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2076 if (ctio == NULL) { 2077 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2078 "qla_target(%d): %s failed: unable to allocate " 2079 "request packet\n", ha->vp_idx, __func__); 2080 return; 2081 } 2082 2083 ctio->entry_type = CTIO_TYPE7; 2084 ctio->entry_count = 1; 2085 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2086 ctio->nport_handle = mcmd->sess->loop_id; 2087 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2088 ctio->vp_index = ha->vp_idx; 2089 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2090 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2091 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2092 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2093 temp = (atio->u.isp24.attr << 9)| 2094 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2095 ctio->u.status1.flags = cpu_to_le16(temp); 2096 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2097 ctio->u.status1.ox_id = cpu_to_le16(temp); 2098 ctio->u.status1.scsi_status = 2099 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2100 ctio->u.status1.response_len = cpu_to_le16(8); 2101 ctio->u.status1.sense_data[0] = resp_code; 2102 2103 /* Memory Barrier */ 2104 wmb(); 2105 if (qpair->reqq_start_iocbs) 2106 qpair->reqq_start_iocbs(qpair); 2107 else 2108 qla2x00_start_iocbs(ha, qpair->req); 2109 } 2110 2111 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2112 { 2113 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2114 } 2115 EXPORT_SYMBOL(qlt_free_mcmd); 2116 2117 /* 2118 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2119 * reacquire 2120 */ 2121 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2122 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2123 { 2124 struct atio_from_isp *atio = &cmd->atio; 2125 struct ctio7_to_24xx *ctio; 2126 uint16_t temp; 2127 struct scsi_qla_host *vha = cmd->vha; 2128 2129 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2130 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2131 "sense_key=%02x, asc=%02x, ascq=%02x", 2132 vha, atio, scsi_status, sense_key, asc, ascq); 2133 2134 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2135 if (!ctio) { 2136 ql_dbg(ql_dbg_async, vha, 0x3067, 2137 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2138 vha->host_no, __func__); 2139 goto out; 2140 } 2141 2142 ctio->entry_type = CTIO_TYPE7; 2143 ctio->entry_count = 1; 2144 ctio->handle = QLA_TGT_SKIP_HANDLE; 2145 ctio->nport_handle = cmd->sess->loop_id; 2146 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2147 ctio->vp_index = vha->vp_idx; 2148 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2149 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2150 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2151 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2152 temp = (atio->u.isp24.attr << 9) | 2153 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2154 ctio->u.status1.flags = cpu_to_le16(temp); 2155 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2156 ctio->u.status1.ox_id = cpu_to_le16(temp); 2157 ctio->u.status1.scsi_status = 2158 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2159 ctio->u.status1.response_len = cpu_to_le16(18); 2160 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2161 2162 if (ctio->u.status1.residual != 0) 2163 ctio->u.status1.scsi_status |= 2164 cpu_to_le16(SS_RESIDUAL_UNDER); 2165 2166 /* Response code and sense key */ 2167 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)), 2168 (&ctio->u.status1.sense_data)[0]); 2169 /* Additional sense length */ 2170 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]); 2171 /* ASC and ASCQ */ 2172 put_unaligned_le32(((asc << 24) | (ascq << 16)), 2173 (&ctio->u.status1.sense_data)[3]); 2174 2175 /* Memory Barrier */ 2176 wmb(); 2177 2178 if (qpair->reqq_start_iocbs) 2179 qpair->reqq_start_iocbs(qpair); 2180 else 2181 qla2x00_start_iocbs(vha, qpair->req); 2182 2183 out: 2184 return; 2185 } 2186 2187 /* callback from target fabric module code */ 2188 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2189 { 2190 struct scsi_qla_host *vha = mcmd->sess->vha; 2191 struct qla_hw_data *ha = vha->hw; 2192 unsigned long flags; 2193 struct qla_qpair *qpair = mcmd->qpair; 2194 2195 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2196 "TM response mcmd (%p) status %#x state %#x", 2197 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2198 2199 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2200 2201 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2202 /* 2203 * Either the port is not online or this request was from 2204 * previous life, just abort the processing. 2205 */ 2206 ql_dbg(ql_dbg_async, vha, 0xe100, 2207 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2208 vha->flags.online, qla2x00_reset_active(vha), 2209 mcmd->reset_count, qpair->chip_reset); 2210 ha->tgt.tgt_ops->free_mcmd(mcmd); 2211 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2212 return; 2213 } 2214 2215 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2216 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2217 ELS_LOGO || 2218 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2219 ELS_PRLO || 2220 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2221 ELS_TPRLO) { 2222 ql_dbg(ql_dbg_disc, vha, 0x2106, 2223 "TM response logo %phC status %#x state %#x", 2224 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2225 mcmd->flags); 2226 qlt_schedule_sess_for_deletion(mcmd->sess); 2227 } else { 2228 qlt_send_notify_ack(vha->hw->base_qpair, 2229 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2230 } 2231 } else { 2232 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) 2233 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts, 2234 mcmd->fc_tm_rsp, false); 2235 else 2236 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2237 mcmd->fc_tm_rsp); 2238 } 2239 /* 2240 * Make the callback for ->free_mcmd() to queue_work() and invoke 2241 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2242 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2243 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2244 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2245 * qlt_xmit_tm_rsp() returns here.. 2246 */ 2247 ha->tgt.tgt_ops->free_mcmd(mcmd); 2248 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2249 } 2250 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2251 2252 /* No locks */ 2253 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2254 { 2255 struct qla_tgt_cmd *cmd = prm->cmd; 2256 2257 BUG_ON(cmd->sg_cnt == 0); 2258 2259 prm->sg = (struct scatterlist *)cmd->sg; 2260 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg, 2261 cmd->sg_cnt, cmd->dma_data_direction); 2262 if (unlikely(prm->seg_cnt == 0)) 2263 goto out_err; 2264 2265 prm->cmd->sg_mapped = 1; 2266 2267 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2268 /* 2269 * If greater than four sg entries then we need to allocate 2270 * the continuation entries 2271 */ 2272 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2273 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2274 QLA_TGT_DATASEGS_PER_CMD_24XX, 2275 QLA_TGT_DATASEGS_PER_CONT_24XX); 2276 } else { 2277 /* DIF */ 2278 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2279 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2280 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2281 prm->tot_dsds = prm->seg_cnt; 2282 } else 2283 prm->tot_dsds = prm->seg_cnt; 2284 2285 if (cmd->prot_sg_cnt) { 2286 prm->prot_sg = cmd->prot_sg; 2287 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev, 2288 cmd->prot_sg, cmd->prot_sg_cnt, 2289 cmd->dma_data_direction); 2290 if (unlikely(prm->prot_seg_cnt == 0)) 2291 goto out_err; 2292 2293 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2294 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2295 /* Dif Bundling not support here */ 2296 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2297 cmd->blk_sz); 2298 prm->tot_dsds += prm->prot_seg_cnt; 2299 } else 2300 prm->tot_dsds += prm->prot_seg_cnt; 2301 } 2302 } 2303 2304 return 0; 2305 2306 out_err: 2307 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2308 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2309 0, prm->cmd->sg_cnt); 2310 return -1; 2311 } 2312 2313 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2314 { 2315 struct qla_hw_data *ha; 2316 struct qla_qpair *qpair; 2317 if (!cmd->sg_mapped) 2318 return; 2319 2320 qpair = cmd->qpair; 2321 2322 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt, 2323 cmd->dma_data_direction); 2324 cmd->sg_mapped = 0; 2325 2326 if (cmd->prot_sg_cnt) 2327 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 2328 cmd->dma_data_direction); 2329 2330 if (!cmd->ctx) 2331 return; 2332 ha = vha->hw; 2333 if (cmd->ctx_dsd_alloced) 2334 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2335 2336 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2337 } 2338 2339 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2340 uint32_t req_cnt) 2341 { 2342 uint32_t cnt; 2343 struct req_que *req = qpair->req; 2344 2345 if (req->cnt < (req_cnt + 2)) { 2346 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2347 RD_REG_DWORD_RELAXED(req->req_q_out)); 2348 2349 if (req->ring_index < cnt) 2350 req->cnt = cnt - req->ring_index; 2351 else 2352 req->cnt = req->length - (req->ring_index - cnt); 2353 2354 if (unlikely(req->cnt < (req_cnt + 2))) 2355 return -EAGAIN; 2356 } 2357 2358 req->cnt -= req_cnt; 2359 2360 return 0; 2361 } 2362 2363 /* 2364 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2365 */ 2366 static inline void *qlt_get_req_pkt(struct req_que *req) 2367 { 2368 /* Adjust ring index. */ 2369 req->ring_index++; 2370 if (req->ring_index == req->length) { 2371 req->ring_index = 0; 2372 req->ring_ptr = req->ring; 2373 } else { 2374 req->ring_ptr++; 2375 } 2376 return (cont_entry_t *)req->ring_ptr; 2377 } 2378 2379 /* ha->hardware_lock supposed to be held on entry */ 2380 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2381 { 2382 uint32_t h; 2383 int index; 2384 uint8_t found = 0; 2385 struct req_que *req = qpair->req; 2386 2387 h = req->current_outstanding_cmd; 2388 2389 for (index = 1; index < req->num_outstanding_cmds; index++) { 2390 h++; 2391 if (h == req->num_outstanding_cmds) 2392 h = 1; 2393 2394 if (h == QLA_TGT_SKIP_HANDLE) 2395 continue; 2396 2397 if (!req->outstanding_cmds[h]) { 2398 found = 1; 2399 break; 2400 } 2401 } 2402 2403 if (found) { 2404 req->current_outstanding_cmd = h; 2405 } else { 2406 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2407 "qla_target(%d): Ran out of empty cmd slots\n", 2408 qpair->vha->vp_idx); 2409 h = QLA_TGT_NULL_HANDLE; 2410 } 2411 2412 return h; 2413 } 2414 2415 /* ha->hardware_lock supposed to be held on entry */ 2416 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2417 struct qla_tgt_prm *prm) 2418 { 2419 uint32_t h; 2420 struct ctio7_to_24xx *pkt; 2421 struct atio_from_isp *atio = &prm->cmd->atio; 2422 uint16_t temp; 2423 2424 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2425 prm->pkt = pkt; 2426 memset(pkt, 0, sizeof(*pkt)); 2427 2428 pkt->entry_type = CTIO_TYPE7; 2429 pkt->entry_count = (uint8_t)prm->req_cnt; 2430 pkt->vp_index = prm->cmd->vp_idx; 2431 2432 h = qlt_make_handle(qpair); 2433 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2434 /* 2435 * CTIO type 7 from the firmware doesn't provide a way to 2436 * know the initiator's LOOP ID, hence we can't find 2437 * the session and, so, the command. 2438 */ 2439 return -EAGAIN; 2440 } else 2441 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2442 2443 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2444 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2445 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2446 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2447 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2448 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2449 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2450 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2451 temp = atio->u.isp24.attr << 9; 2452 pkt->u.status0.flags |= cpu_to_le16(temp); 2453 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2454 pkt->u.status0.ox_id = cpu_to_le16(temp); 2455 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2456 2457 return 0; 2458 } 2459 2460 /* 2461 * ha->hardware_lock supposed to be held on entry. We have already made sure 2462 * that there is sufficient amount of request entries to not drop it. 2463 */ 2464 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2465 { 2466 int cnt; 2467 uint32_t *dword_ptr; 2468 2469 /* Build continuation packets */ 2470 while (prm->seg_cnt > 0) { 2471 cont_a64_entry_t *cont_pkt64 = 2472 (cont_a64_entry_t *)qlt_get_req_pkt( 2473 prm->cmd->qpair->req); 2474 2475 /* 2476 * Make sure that from cont_pkt64 none of 2477 * 64-bit specific fields used for 32-bit 2478 * addressing. Cast to (cont_entry_t *) for 2479 * that. 2480 */ 2481 2482 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2483 2484 cont_pkt64->entry_count = 1; 2485 cont_pkt64->sys_define = 0; 2486 2487 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2488 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address; 2489 2490 /* Load continuation entry data segments */ 2491 for (cnt = 0; 2492 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2493 cnt++, prm->seg_cnt--) { 2494 *dword_ptr++ = 2495 cpu_to_le32(pci_dma_lo32 2496 (sg_dma_address(prm->sg))); 2497 *dword_ptr++ = cpu_to_le32(pci_dma_hi32 2498 (sg_dma_address(prm->sg))); 2499 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2500 2501 prm->sg = sg_next(prm->sg); 2502 } 2503 } 2504 } 2505 2506 /* 2507 * ha->hardware_lock supposed to be held on entry. We have already made sure 2508 * that there is sufficient amount of request entries to not drop it. 2509 */ 2510 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2511 { 2512 int cnt; 2513 uint32_t *dword_ptr; 2514 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2515 2516 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2517 2518 /* Setup packet address segment pointer */ 2519 dword_ptr = pkt24->u.status0.dseg_0_address; 2520 2521 /* Set total data segment count */ 2522 if (prm->seg_cnt) 2523 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2524 2525 if (prm->seg_cnt == 0) { 2526 /* No data transfer */ 2527 *dword_ptr++ = 0; 2528 *dword_ptr = 0; 2529 return; 2530 } 2531 2532 /* If scatter gather */ 2533 2534 /* Load command entry data segments */ 2535 for (cnt = 0; 2536 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2537 cnt++, prm->seg_cnt--) { 2538 *dword_ptr++ = 2539 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 2540 2541 *dword_ptr++ = cpu_to_le32(pci_dma_hi32( 2542 sg_dma_address(prm->sg))); 2543 2544 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2545 2546 prm->sg = sg_next(prm->sg); 2547 } 2548 2549 qlt_load_cont_data_segments(prm); 2550 } 2551 2552 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2553 { 2554 return cmd->bufflen > 0; 2555 } 2556 2557 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2558 { 2559 struct qla_tgt_cmd *cmd; 2560 struct scsi_qla_host *vha; 2561 2562 /* asc 0x10=dif error */ 2563 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2564 cmd = prm->cmd; 2565 vha = cmd->vha; 2566 /* ASCQ */ 2567 switch (prm->sense_buffer[13]) { 2568 case 1: 2569 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2570 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2571 "se_cmd=%p tag[%x]", 2572 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2573 cmd->atio.u.isp24.exchange_addr); 2574 break; 2575 case 2: 2576 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2577 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2578 "se_cmd=%p tag[%x]", 2579 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2580 cmd->atio.u.isp24.exchange_addr); 2581 break; 2582 case 3: 2583 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2584 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2585 "se_cmd=%p tag[%x]", 2586 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2587 cmd->atio.u.isp24.exchange_addr); 2588 break; 2589 default: 2590 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2591 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2592 "se_cmd=%p tag[%x]", 2593 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2594 cmd->atio.u.isp24.exchange_addr); 2595 break; 2596 } 2597 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2598 } 2599 } 2600 2601 /* 2602 * Called without ha->hardware_lock held 2603 */ 2604 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2605 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2606 uint32_t *full_req_cnt) 2607 { 2608 struct se_cmd *se_cmd = &cmd->se_cmd; 2609 struct qla_qpair *qpair = cmd->qpair; 2610 2611 prm->cmd = cmd; 2612 prm->tgt = cmd->tgt; 2613 prm->pkt = NULL; 2614 prm->rq_result = scsi_status; 2615 prm->sense_buffer = &cmd->sense_buffer[0]; 2616 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2617 prm->sg = NULL; 2618 prm->seg_cnt = -1; 2619 prm->req_cnt = 1; 2620 prm->residual = 0; 2621 prm->add_status_pkt = 0; 2622 prm->prot_sg = NULL; 2623 prm->prot_seg_cnt = 0; 2624 prm->tot_dsds = 0; 2625 2626 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2627 if (qlt_pci_map_calc_cnt(prm) != 0) 2628 return -EAGAIN; 2629 } 2630 2631 *full_req_cnt = prm->req_cnt; 2632 2633 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2634 prm->residual = se_cmd->residual_count; 2635 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2636 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2637 prm->residual, se_cmd->tag, 2638 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2639 cmd->bufflen, prm->rq_result); 2640 prm->rq_result |= SS_RESIDUAL_UNDER; 2641 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2642 prm->residual = se_cmd->residual_count; 2643 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2644 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2645 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2646 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2647 prm->rq_result |= SS_RESIDUAL_OVER; 2648 } 2649 2650 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2651 /* 2652 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2653 * ignored in *xmit_response() below 2654 */ 2655 if (qlt_has_data(cmd)) { 2656 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2657 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2658 (prm->rq_result != 0))) { 2659 prm->add_status_pkt = 1; 2660 (*full_req_cnt)++; 2661 } 2662 } 2663 } 2664 2665 return 0; 2666 } 2667 2668 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2669 int sending_sense) 2670 { 2671 if (cmd->qpair->enable_class_2) 2672 return 0; 2673 2674 if (sending_sense) 2675 return cmd->conf_compl_supported; 2676 else 2677 return cmd->qpair->enable_explicit_conf && 2678 cmd->conf_compl_supported; 2679 } 2680 2681 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2682 struct qla_tgt_prm *prm) 2683 { 2684 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2685 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2686 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2687 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2688 ctio->u.status0.flags |= cpu_to_le16( 2689 CTIO7_FLAGS_EXPLICIT_CONFORM | 2690 CTIO7_FLAGS_CONFORM_REQ); 2691 } 2692 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2693 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2694 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2695 int i; 2696 2697 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2698 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2699 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2700 "Skipping EXPLICIT_CONFORM and " 2701 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2702 "non GOOD status\n"); 2703 goto skip_explict_conf; 2704 } 2705 ctio->u.status1.flags |= cpu_to_le16( 2706 CTIO7_FLAGS_EXPLICIT_CONFORM | 2707 CTIO7_FLAGS_CONFORM_REQ); 2708 } 2709 skip_explict_conf: 2710 ctio->u.status1.flags &= 2711 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2712 ctio->u.status1.flags |= 2713 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2714 ctio->u.status1.scsi_status |= 2715 cpu_to_le16(SS_SENSE_LEN_VALID); 2716 ctio->u.status1.sense_length = 2717 cpu_to_le16(prm->sense_buffer_len); 2718 for (i = 0; i < prm->sense_buffer_len/4; i++) 2719 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2720 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2721 2722 qlt_print_dif_err(prm); 2723 2724 } else { 2725 ctio->u.status1.flags &= 2726 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2727 ctio->u.status1.flags |= 2728 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2729 ctio->u.status1.sense_length = 0; 2730 memset(ctio->u.status1.sense_data, 0, 2731 sizeof(ctio->u.status1.sense_data)); 2732 } 2733 2734 /* Sense with len > 24, is it possible ??? */ 2735 } 2736 2737 static inline int 2738 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2739 { 2740 switch (se_cmd->prot_op) { 2741 case TARGET_PROT_DOUT_INSERT: 2742 case TARGET_PROT_DIN_STRIP: 2743 if (ql2xenablehba_err_chk >= 1) 2744 return 1; 2745 break; 2746 case TARGET_PROT_DOUT_PASS: 2747 case TARGET_PROT_DIN_PASS: 2748 if (ql2xenablehba_err_chk >= 2) 2749 return 1; 2750 break; 2751 case TARGET_PROT_DIN_INSERT: 2752 case TARGET_PROT_DOUT_STRIP: 2753 return 1; 2754 default: 2755 break; 2756 } 2757 return 0; 2758 } 2759 2760 static inline int 2761 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2762 { 2763 switch (se_cmd->prot_op) { 2764 case TARGET_PROT_DIN_INSERT: 2765 case TARGET_PROT_DOUT_INSERT: 2766 case TARGET_PROT_DIN_STRIP: 2767 case TARGET_PROT_DOUT_STRIP: 2768 case TARGET_PROT_DIN_PASS: 2769 case TARGET_PROT_DOUT_PASS: 2770 return 1; 2771 default: 2772 return 0; 2773 } 2774 return 0; 2775 } 2776 2777 /* 2778 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2779 */ 2780 static void 2781 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2782 uint16_t *pfw_prot_opts) 2783 { 2784 struct se_cmd *se_cmd = &cmd->se_cmd; 2785 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2786 scsi_qla_host_t *vha = cmd->tgt->vha; 2787 struct qla_hw_data *ha = vha->hw; 2788 uint32_t t32 = 0; 2789 2790 /* 2791 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2792 * have been immplemented by TCM, before AppTag is avail. 2793 * Look for modesense_handlers[] 2794 */ 2795 ctx->app_tag = 0; 2796 ctx->app_tag_mask[0] = 0x0; 2797 ctx->app_tag_mask[1] = 0x0; 2798 2799 if (IS_PI_UNINIT_CAPABLE(ha)) { 2800 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2801 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2802 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2803 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2804 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2805 } 2806 2807 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2808 2809 switch (se_cmd->prot_type) { 2810 case TARGET_DIF_TYPE0_PROT: 2811 /* 2812 * No check for ql2xenablehba_err_chk, as it 2813 * would be an I/O error if hba tag generation 2814 * is not done. 2815 */ 2816 ctx->ref_tag = cpu_to_le32(lba); 2817 /* enable ALL bytes of the ref tag */ 2818 ctx->ref_tag_mask[0] = 0xff; 2819 ctx->ref_tag_mask[1] = 0xff; 2820 ctx->ref_tag_mask[2] = 0xff; 2821 ctx->ref_tag_mask[3] = 0xff; 2822 break; 2823 case TARGET_DIF_TYPE1_PROT: 2824 /* 2825 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2826 * REF tag, and 16 bit app tag. 2827 */ 2828 ctx->ref_tag = cpu_to_le32(lba); 2829 if (!qla_tgt_ref_mask_check(se_cmd) || 2830 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2831 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2832 break; 2833 } 2834 /* enable ALL bytes of the ref tag */ 2835 ctx->ref_tag_mask[0] = 0xff; 2836 ctx->ref_tag_mask[1] = 0xff; 2837 ctx->ref_tag_mask[2] = 0xff; 2838 ctx->ref_tag_mask[3] = 0xff; 2839 break; 2840 case TARGET_DIF_TYPE2_PROT: 2841 /* 2842 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2843 * tag has to match LBA in CDB + N 2844 */ 2845 ctx->ref_tag = cpu_to_le32(lba); 2846 if (!qla_tgt_ref_mask_check(se_cmd) || 2847 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2848 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2849 break; 2850 } 2851 /* enable ALL bytes of the ref tag */ 2852 ctx->ref_tag_mask[0] = 0xff; 2853 ctx->ref_tag_mask[1] = 0xff; 2854 ctx->ref_tag_mask[2] = 0xff; 2855 ctx->ref_tag_mask[3] = 0xff; 2856 break; 2857 case TARGET_DIF_TYPE3_PROT: 2858 /* For TYPE 3 protection: 16 bit GUARD only */ 2859 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2860 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2861 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2862 break; 2863 } 2864 } 2865 2866 static inline int 2867 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2868 { 2869 uint32_t *cur_dsd; 2870 uint32_t transfer_length = 0; 2871 uint32_t data_bytes; 2872 uint32_t dif_bytes; 2873 uint8_t bundling = 1; 2874 uint8_t *clr_ptr; 2875 struct crc_context *crc_ctx_pkt = NULL; 2876 struct qla_hw_data *ha; 2877 struct ctio_crc2_to_fw *pkt; 2878 dma_addr_t crc_ctx_dma; 2879 uint16_t fw_prot_opts = 0; 2880 struct qla_tgt_cmd *cmd = prm->cmd; 2881 struct se_cmd *se_cmd = &cmd->se_cmd; 2882 uint32_t h; 2883 struct atio_from_isp *atio = &prm->cmd->atio; 2884 struct qla_tc_param tc; 2885 uint16_t t16; 2886 scsi_qla_host_t *vha = cmd->vha; 2887 2888 ha = vha->hw; 2889 2890 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 2891 prm->pkt = pkt; 2892 memset(pkt, 0, sizeof(*pkt)); 2893 2894 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 2895 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2896 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2897 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2898 2899 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2900 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2901 bundling = 0; 2902 2903 /* Compute dif len and adjust data len to incude protection */ 2904 data_bytes = cmd->bufflen; 2905 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2906 2907 switch (se_cmd->prot_op) { 2908 case TARGET_PROT_DIN_INSERT: 2909 case TARGET_PROT_DOUT_STRIP: 2910 transfer_length = data_bytes; 2911 if (cmd->prot_sg_cnt) 2912 data_bytes += dif_bytes; 2913 break; 2914 case TARGET_PROT_DIN_STRIP: 2915 case TARGET_PROT_DOUT_INSERT: 2916 case TARGET_PROT_DIN_PASS: 2917 case TARGET_PROT_DOUT_PASS: 2918 transfer_length = data_bytes + dif_bytes; 2919 break; 2920 default: 2921 BUG(); 2922 break; 2923 } 2924 2925 if (!qlt_hba_err_chk_enabled(se_cmd)) 2926 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2927 /* HBA error checking enabled */ 2928 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2929 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2930 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2931 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 2932 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2933 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2934 } 2935 2936 switch (se_cmd->prot_op) { 2937 case TARGET_PROT_DIN_INSERT: 2938 case TARGET_PROT_DOUT_INSERT: 2939 fw_prot_opts |= PO_MODE_DIF_INSERT; 2940 break; 2941 case TARGET_PROT_DIN_STRIP: 2942 case TARGET_PROT_DOUT_STRIP: 2943 fw_prot_opts |= PO_MODE_DIF_REMOVE; 2944 break; 2945 case TARGET_PROT_DIN_PASS: 2946 case TARGET_PROT_DOUT_PASS: 2947 fw_prot_opts |= PO_MODE_DIF_PASS; 2948 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 2949 break; 2950 default:/* Normal Request */ 2951 fw_prot_opts |= PO_MODE_DIF_PASS; 2952 break; 2953 } 2954 2955 /* ---- PKT ---- */ 2956 /* Update entry type to indicate Command Type CRC_2 IOCB */ 2957 pkt->entry_type = CTIO_CRC2; 2958 pkt->entry_count = 1; 2959 pkt->vp_index = cmd->vp_idx; 2960 2961 h = qlt_make_handle(qpair); 2962 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2963 /* 2964 * CTIO type 7 from the firmware doesn't provide a way to 2965 * know the initiator's LOOP ID, hence we can't find 2966 * the session and, so, the command. 2967 */ 2968 return -EAGAIN; 2969 } else 2970 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2971 2972 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2973 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2974 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2975 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2976 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2977 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2978 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2979 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2980 2981 /* silence compile warning */ 2982 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2983 pkt->ox_id = cpu_to_le16(t16); 2984 2985 t16 = (atio->u.isp24.attr << 9); 2986 pkt->flags |= cpu_to_le16(t16); 2987 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 2988 2989 /* Set transfer direction */ 2990 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2991 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 2992 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2993 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 2994 2995 pkt->dseg_count = prm->tot_dsds; 2996 /* Fibre channel byte count */ 2997 pkt->transfer_length = cpu_to_le32(transfer_length); 2998 2999 /* ----- CRC context -------- */ 3000 3001 /* Allocate CRC context from global pool */ 3002 crc_ctx_pkt = cmd->ctx = 3003 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3004 3005 if (!crc_ctx_pkt) 3006 goto crc_queuing_error; 3007 3008 /* Zero out CTX area. */ 3009 clr_ptr = (uint8_t *)crc_ctx_pkt; 3010 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 3011 3012 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3013 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3014 3015 /* Set handle */ 3016 crc_ctx_pkt->handle = pkt->handle; 3017 3018 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3019 3020 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 3021 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 3022 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3023 3024 if (!bundling) { 3025 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 3026 } else { 3027 /* 3028 * Configure Bundling if we need to fetch interlaving 3029 * protection PCI accesses 3030 */ 3031 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3032 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3033 crc_ctx_pkt->u.bundling.dseg_count = 3034 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3035 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 3036 } 3037 3038 /* Finish the common fields of CRC pkt */ 3039 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3040 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3041 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3042 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3043 3044 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3045 tc.vha = vha; 3046 tc.blk_sz = cmd->blk_sz; 3047 tc.bufflen = cmd->bufflen; 3048 tc.sg = cmd->sg; 3049 tc.prot_sg = cmd->prot_sg; 3050 tc.ctx = crc_ctx_pkt; 3051 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3052 3053 /* Walks data segments */ 3054 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3055 3056 if (!bundling && prm->prot_seg_cnt) { 3057 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3058 prm->tot_dsds, &tc)) 3059 goto crc_queuing_error; 3060 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3061 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3062 goto crc_queuing_error; 3063 3064 if (bundling && prm->prot_seg_cnt) { 3065 /* Walks dif segments */ 3066 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3067 3068 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 3069 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3070 prm->prot_seg_cnt, &tc)) 3071 goto crc_queuing_error; 3072 } 3073 return QLA_SUCCESS; 3074 3075 crc_queuing_error: 3076 /* Cleanup will be performed by the caller */ 3077 qpair->req->outstanding_cmds[h] = NULL; 3078 3079 return QLA_FUNCTION_FAILED; 3080 } 3081 3082 /* 3083 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3084 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3085 */ 3086 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3087 uint8_t scsi_status) 3088 { 3089 struct scsi_qla_host *vha = cmd->vha; 3090 struct qla_qpair *qpair = cmd->qpair; 3091 struct ctio7_to_24xx *pkt; 3092 struct qla_tgt_prm prm; 3093 uint32_t full_req_cnt = 0; 3094 unsigned long flags = 0; 3095 int res; 3096 3097 if (cmd->sess && cmd->sess->deleted) { 3098 cmd->state = QLA_TGT_STATE_PROCESSED; 3099 if (cmd->sess->logout_completed) 3100 /* no need to terminate. FW already freed exchange. */ 3101 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3102 else 3103 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0); 3104 return 0; 3105 } 3106 3107 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3108 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3109 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3110 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3111 &cmd->se_cmd, qpair->id); 3112 3113 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3114 &full_req_cnt); 3115 if (unlikely(res != 0)) { 3116 return res; 3117 } 3118 3119 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3120 3121 if (xmit_type == QLA_TGT_XMIT_STATUS) 3122 qpair->tgt_counters.core_qla_snd_status++; 3123 else 3124 qpair->tgt_counters.core_qla_que_buf++; 3125 3126 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3127 /* 3128 * Either the port is not online or this request was from 3129 * previous life, just abort the processing. 3130 */ 3131 cmd->state = QLA_TGT_STATE_PROCESSED; 3132 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3133 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3134 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3135 vha->flags.online, qla2x00_reset_active(vha), 3136 cmd->reset_count, qpair->chip_reset); 3137 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3138 return 0; 3139 } 3140 3141 /* Does F/W have an IOCBs for this request */ 3142 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3143 if (unlikely(res)) 3144 goto out_unmap_unlock; 3145 3146 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3147 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3148 else 3149 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3150 if (unlikely(res != 0)) { 3151 qpair->req->cnt += full_req_cnt; 3152 goto out_unmap_unlock; 3153 } 3154 3155 pkt = (struct ctio7_to_24xx *)prm.pkt; 3156 3157 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3158 pkt->u.status0.flags |= 3159 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3160 CTIO7_FLAGS_STATUS_MODE_0); 3161 3162 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3163 qlt_load_data_segments(&prm); 3164 3165 if (prm.add_status_pkt == 0) { 3166 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3167 pkt->u.status0.scsi_status = 3168 cpu_to_le16(prm.rq_result); 3169 pkt->u.status0.residual = 3170 cpu_to_le32(prm.residual); 3171 pkt->u.status0.flags |= cpu_to_le16( 3172 CTIO7_FLAGS_SEND_STATUS); 3173 if (qlt_need_explicit_conf(cmd, 0)) { 3174 pkt->u.status0.flags |= 3175 cpu_to_le16( 3176 CTIO7_FLAGS_EXPLICIT_CONFORM | 3177 CTIO7_FLAGS_CONFORM_REQ); 3178 } 3179 } 3180 3181 } else { 3182 /* 3183 * We have already made sure that there is sufficient 3184 * amount of request entries to not drop HW lock in 3185 * req_pkt(). 3186 */ 3187 struct ctio7_to_24xx *ctio = 3188 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3189 qpair->req); 3190 3191 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3192 "Building additional status packet 0x%p.\n", 3193 ctio); 3194 3195 /* 3196 * T10Dif: ctio_crc2_to_fw overlay ontop of 3197 * ctio7_to_24xx 3198 */ 3199 memcpy(ctio, pkt, sizeof(*ctio)); 3200 /* reset back to CTIO7 */ 3201 ctio->entry_count = 1; 3202 ctio->entry_type = CTIO_TYPE7; 3203 ctio->dseg_count = 0; 3204 ctio->u.status1.flags &= ~cpu_to_le16( 3205 CTIO7_FLAGS_DATA_IN); 3206 3207 /* Real finish is ctio_m1's finish */ 3208 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3209 pkt->u.status0.flags |= cpu_to_le16( 3210 CTIO7_FLAGS_DONT_RET_CTIO); 3211 3212 /* qlt_24xx_init_ctio_to_isp will correct 3213 * all neccessary fields that's part of CTIO7. 3214 * There should be no residual of CTIO-CRC2 data. 3215 */ 3216 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3217 &prm); 3218 } 3219 } else 3220 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3221 3222 3223 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3224 cmd->cmd_sent_to_fw = 1; 3225 3226 /* Memory Barrier */ 3227 wmb(); 3228 if (qpair->reqq_start_iocbs) 3229 qpair->reqq_start_iocbs(qpair); 3230 else 3231 qla2x00_start_iocbs(vha, qpair->req); 3232 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3233 3234 return 0; 3235 3236 out_unmap_unlock: 3237 qlt_unmap_sg(vha, cmd); 3238 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3239 3240 return res; 3241 } 3242 EXPORT_SYMBOL(qlt_xmit_response); 3243 3244 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3245 { 3246 struct ctio7_to_24xx *pkt; 3247 struct scsi_qla_host *vha = cmd->vha; 3248 struct qla_tgt *tgt = cmd->tgt; 3249 struct qla_tgt_prm prm; 3250 unsigned long flags = 0; 3251 int res = 0; 3252 struct qla_qpair *qpair = cmd->qpair; 3253 3254 memset(&prm, 0, sizeof(prm)); 3255 prm.cmd = cmd; 3256 prm.tgt = tgt; 3257 prm.sg = NULL; 3258 prm.req_cnt = 1; 3259 3260 /* Calculate number of entries and segments required */ 3261 if (qlt_pci_map_calc_cnt(&prm) != 0) 3262 return -EAGAIN; 3263 3264 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3265 (cmd->sess && cmd->sess->deleted)) { 3266 /* 3267 * Either the port is not online or this request was from 3268 * previous life, just abort the processing. 3269 */ 3270 cmd->state = QLA_TGT_STATE_NEED_DATA; 3271 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3272 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3273 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3274 vha->flags.online, qla2x00_reset_active(vha), 3275 cmd->reset_count, qpair->chip_reset); 3276 return 0; 3277 } 3278 3279 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3280 /* Does F/W have an IOCBs for this request */ 3281 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3282 if (res != 0) 3283 goto out_unlock_free_unmap; 3284 if (cmd->se_cmd.prot_op) 3285 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3286 else 3287 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3288 3289 if (unlikely(res != 0)) { 3290 qpair->req->cnt += prm.req_cnt; 3291 goto out_unlock_free_unmap; 3292 } 3293 3294 pkt = (struct ctio7_to_24xx *)prm.pkt; 3295 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3296 CTIO7_FLAGS_STATUS_MODE_0); 3297 3298 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3299 qlt_load_data_segments(&prm); 3300 3301 cmd->state = QLA_TGT_STATE_NEED_DATA; 3302 cmd->cmd_sent_to_fw = 1; 3303 3304 /* Memory Barrier */ 3305 wmb(); 3306 if (qpair->reqq_start_iocbs) 3307 qpair->reqq_start_iocbs(qpair); 3308 else 3309 qla2x00_start_iocbs(vha, qpair->req); 3310 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3311 3312 return res; 3313 3314 out_unlock_free_unmap: 3315 qlt_unmap_sg(vha, cmd); 3316 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3317 3318 return res; 3319 } 3320 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3321 3322 3323 /* 3324 * it is assumed either hardware_lock or qpair lock is held. 3325 */ 3326 static void 3327 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3328 struct ctio_crc_from_fw *sts) 3329 { 3330 uint8_t *ap = &sts->actual_dif[0]; 3331 uint8_t *ep = &sts->expected_dif[0]; 3332 uint64_t lba = cmd->se_cmd.t_task_lba; 3333 uint8_t scsi_status, sense_key, asc, ascq; 3334 unsigned long flags; 3335 struct scsi_qla_host *vha = cmd->vha; 3336 3337 cmd->trc_flags |= TRC_DIF_ERR; 3338 3339 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3340 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3341 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3342 3343 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3344 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3345 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3346 3347 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3348 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3349 3350 scsi_status = sense_key = asc = ascq = 0; 3351 3352 /* check appl tag */ 3353 if (cmd->e_app_tag != cmd->a_app_tag) { 3354 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3355 "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3356 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3357 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3358 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3359 cmd->atio.u.isp24.fcp_hdr.ox_id); 3360 3361 cmd->dif_err_code = DIF_ERR_APP; 3362 scsi_status = SAM_STAT_CHECK_CONDITION; 3363 sense_key = ABORTED_COMMAND; 3364 asc = 0x10; 3365 ascq = 0x2; 3366 } 3367 3368 /* check ref tag */ 3369 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3370 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3371 "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", 3372 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3373 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3374 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3375 cmd->atio.u.isp24.fcp_hdr.ox_id); 3376 3377 cmd->dif_err_code = DIF_ERR_REF; 3378 scsi_status = SAM_STAT_CHECK_CONDITION; 3379 sense_key = ABORTED_COMMAND; 3380 asc = 0x10; 3381 ascq = 0x3; 3382 goto out; 3383 } 3384 3385 /* check guard */ 3386 if (cmd->e_guard != cmd->a_guard) { 3387 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3388 "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", 3389 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3390 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3391 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3392 cmd->atio.u.isp24.fcp_hdr.ox_id); 3393 3394 cmd->dif_err_code = DIF_ERR_GRD; 3395 scsi_status = SAM_STAT_CHECK_CONDITION; 3396 sense_key = ABORTED_COMMAND; 3397 asc = 0x10; 3398 ascq = 0x1; 3399 } 3400 out: 3401 switch (cmd->state) { 3402 case QLA_TGT_STATE_NEED_DATA: 3403 /* handle_data will load DIF error code */ 3404 cmd->state = QLA_TGT_STATE_DATA_IN; 3405 vha->hw->tgt.tgt_ops->handle_data(cmd); 3406 break; 3407 default: 3408 spin_lock_irqsave(&cmd->cmd_lock, flags); 3409 if (cmd->aborted) { 3410 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3411 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3412 break; 3413 } 3414 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3415 3416 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3417 ascq); 3418 /* assume scsi status gets out on the wire. 3419 * Will not wait for completion. 3420 */ 3421 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3422 break; 3423 } 3424 } 3425 3426 /* If hardware_lock held on entry, might drop it, then reaquire */ 3427 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3428 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3429 struct imm_ntfy_from_isp *ntfy) 3430 { 3431 struct nack_to_isp *nack; 3432 struct qla_hw_data *ha = vha->hw; 3433 request_t *pkt; 3434 int ret = 0; 3435 3436 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3437 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3438 3439 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3440 if (pkt == NULL) { 3441 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3442 "qla_target(%d): %s failed: unable to allocate " 3443 "request packet\n", vha->vp_idx, __func__); 3444 return -ENOMEM; 3445 } 3446 3447 pkt->entry_type = NOTIFY_ACK_TYPE; 3448 pkt->entry_count = 1; 3449 pkt->handle = QLA_TGT_SKIP_HANDLE; 3450 3451 nack = (struct nack_to_isp *)pkt; 3452 nack->ox_id = ntfy->ox_id; 3453 3454 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3455 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3456 nack->u.isp24.flags = ntfy->u.isp24.flags & 3457 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3458 } 3459 3460 /* terminate */ 3461 nack->u.isp24.flags |= 3462 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3463 3464 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3465 nack->u.isp24.status = ntfy->u.isp24.status; 3466 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3467 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3468 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3469 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3470 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3471 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3472 3473 qla2x00_start_iocbs(vha, vha->req); 3474 return ret; 3475 } 3476 3477 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3478 struct imm_ntfy_from_isp *imm, int ha_locked) 3479 { 3480 unsigned long flags = 0; 3481 int rc; 3482 3483 if (ha_locked) { 3484 rc = __qlt_send_term_imm_notif(vha, imm); 3485 3486 #if 0 /* Todo */ 3487 if (rc == -ENOMEM) 3488 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3489 #else 3490 if (rc) { 3491 } 3492 #endif 3493 goto done; 3494 } 3495 3496 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3497 rc = __qlt_send_term_imm_notif(vha, imm); 3498 3499 #if 0 /* Todo */ 3500 if (rc == -ENOMEM) 3501 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3502 #endif 3503 3504 done: 3505 if (!ha_locked) 3506 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3507 } 3508 3509 /* 3510 * If hardware_lock held on entry, might drop it, then reaquire 3511 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3512 */ 3513 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3514 struct qla_tgt_cmd *cmd, 3515 struct atio_from_isp *atio) 3516 { 3517 struct scsi_qla_host *vha = qpair->vha; 3518 struct ctio7_to_24xx *ctio24; 3519 struct qla_hw_data *ha = vha->hw; 3520 request_t *pkt; 3521 int ret = 0; 3522 uint16_t temp; 3523 3524 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3525 3526 if (cmd) 3527 vha = cmd->vha; 3528 3529 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3530 if (pkt == NULL) { 3531 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3532 "qla_target(%d): %s failed: unable to allocate " 3533 "request packet\n", vha->vp_idx, __func__); 3534 return -ENOMEM; 3535 } 3536 3537 if (cmd != NULL) { 3538 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3539 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3540 "qla_target(%d): Terminating cmd %p with " 3541 "incorrect state %d\n", vha->vp_idx, cmd, 3542 cmd->state); 3543 } else 3544 ret = 1; 3545 } 3546 3547 qpair->tgt_counters.num_term_xchg_sent++; 3548 pkt->entry_count = 1; 3549 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3550 3551 ctio24 = (struct ctio7_to_24xx *)pkt; 3552 ctio24->entry_type = CTIO_TYPE7; 3553 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3554 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3555 ctio24->vp_index = vha->vp_idx; 3556 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3557 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3558 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3559 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3560 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3561 CTIO7_FLAGS_TERMINATE; 3562 ctio24->u.status1.flags = cpu_to_le16(temp); 3563 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3564 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3565 3566 /* Most likely, it isn't needed */ 3567 ctio24->u.status1.residual = get_unaligned((uint32_t *) 3568 &atio->u.isp24.fcp_cmnd.add_cdb[ 3569 atio->u.isp24.fcp_cmnd.add_cdb_len]); 3570 if (ctio24->u.status1.residual != 0) 3571 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 3572 3573 /* Memory Barrier */ 3574 wmb(); 3575 if (qpair->reqq_start_iocbs) 3576 qpair->reqq_start_iocbs(qpair); 3577 else 3578 qla2x00_start_iocbs(vha, qpair->req); 3579 return ret; 3580 } 3581 3582 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3583 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3584 int ul_abort) 3585 { 3586 struct scsi_qla_host *vha; 3587 unsigned long flags = 0; 3588 int rc; 3589 3590 /* why use different vha? NPIV */ 3591 if (cmd) 3592 vha = cmd->vha; 3593 else 3594 vha = qpair->vha; 3595 3596 if (ha_locked) { 3597 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3598 if (rc == -ENOMEM) 3599 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3600 goto done; 3601 } 3602 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3603 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3604 if (rc == -ENOMEM) 3605 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3606 3607 done: 3608 if (cmd && !ul_abort && !cmd->aborted) { 3609 if (cmd->sg_mapped) 3610 qlt_unmap_sg(vha, cmd); 3611 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3612 } 3613 3614 if (!ha_locked) 3615 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3616 3617 return; 3618 } 3619 3620 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3621 { 3622 struct list_head free_list; 3623 struct qla_tgt_cmd *cmd, *tcmd; 3624 3625 vha->hw->tgt.leak_exchg_thresh_hold = 3626 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3627 3628 cmd = tcmd = NULL; 3629 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3630 INIT_LIST_HEAD(&free_list); 3631 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3632 3633 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3634 list_del(&cmd->cmd_list); 3635 /* This cmd was never sent to TCM. There is no need 3636 * to schedule free or call free_cmd 3637 */ 3638 qlt_free_cmd(cmd); 3639 vha->hw->tgt.num_qfull_cmds_alloc--; 3640 } 3641 } 3642 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3643 } 3644 3645 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3646 { 3647 uint32_t total_leaked; 3648 3649 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3650 3651 if (vha->hw->tgt.leak_exchg_thresh_hold && 3652 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3653 3654 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3655 "Chip reset due to exchange starvation: %d/%d.\n", 3656 total_leaked, vha->hw->cur_fw_xcb_count); 3657 3658 if (IS_P3P_TYPE(vha->hw)) 3659 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3660 else 3661 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3662 qla2xxx_wake_dpc(vha); 3663 } 3664 3665 } 3666 3667 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3668 { 3669 struct qla_tgt *tgt = cmd->tgt; 3670 struct scsi_qla_host *vha = tgt->vha; 3671 struct se_cmd *se_cmd = &cmd->se_cmd; 3672 unsigned long flags; 3673 3674 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3675 "qla_target(%d): terminating exchange for aborted cmd=%p " 3676 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3677 se_cmd->tag); 3678 3679 spin_lock_irqsave(&cmd->cmd_lock, flags); 3680 if (cmd->aborted) { 3681 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3682 /* 3683 * It's normal to see 2 calls in this path: 3684 * 1) XFER Rdy completion + CMD_T_ABORT 3685 * 2) TCM TMR - drain_state_list 3686 */ 3687 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3688 "multiple abort. %p transport_state %x, t_state %x, " 3689 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3690 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3691 return EIO; 3692 } 3693 cmd->aborted = 1; 3694 cmd->trc_flags |= TRC_ABORT; 3695 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3696 3697 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3698 return 0; 3699 } 3700 EXPORT_SYMBOL(qlt_abort_cmd); 3701 3702 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3703 { 3704 struct fc_port *sess = cmd->sess; 3705 3706 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3707 "%s: se_cmd[%p] ox_id %04x\n", 3708 __func__, &cmd->se_cmd, 3709 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3710 3711 BUG_ON(cmd->cmd_in_wq); 3712 3713 if (cmd->sg_mapped) 3714 qlt_unmap_sg(cmd->vha, cmd); 3715 3716 if (!cmd->q_full) 3717 qlt_decr_num_pend_cmds(cmd->vha); 3718 3719 BUG_ON(cmd->sg_mapped); 3720 cmd->jiffies_at_free = get_jiffies_64(); 3721 if (unlikely(cmd->free_sg)) 3722 kfree(cmd->sg); 3723 3724 if (!sess || !sess->se_sess) { 3725 WARN_ON(1); 3726 return; 3727 } 3728 cmd->jiffies_at_free = get_jiffies_64(); 3729 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3730 } 3731 EXPORT_SYMBOL(qlt_free_cmd); 3732 3733 /* 3734 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3735 */ 3736 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3737 struct qla_tgt_cmd *cmd, uint32_t status) 3738 { 3739 int term = 0; 3740 struct scsi_qla_host *vha = qpair->vha; 3741 3742 if (cmd->se_cmd.prot_op) 3743 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3744 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3745 "se_cmd=%p tag[%x] op %#x/%s", 3746 cmd->lba, cmd->lba, 3747 cmd->num_blks, &cmd->se_cmd, 3748 cmd->atio.u.isp24.exchange_addr, 3749 cmd->se_cmd.prot_op, 3750 prot_op_str(cmd->se_cmd.prot_op)); 3751 3752 if (ctio != NULL) { 3753 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3754 term = !(c->flags & 3755 cpu_to_le16(OF_TERM_EXCH)); 3756 } else 3757 term = 1; 3758 3759 if (term) 3760 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3761 3762 return term; 3763 } 3764 3765 3766 /* ha->hardware_lock supposed to be held on entry */ 3767 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3768 struct rsp_que *rsp, uint32_t handle, void *ctio) 3769 { 3770 struct qla_tgt_cmd *cmd = NULL; 3771 struct req_que *req; 3772 int qid = GET_QID(handle); 3773 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3774 3775 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3776 return NULL; 3777 3778 if (qid == rsp->req->id) { 3779 req = rsp->req; 3780 } else if (vha->hw->req_q_map[qid]) { 3781 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3782 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3783 vha->vp_idx, rsp->id, handle); 3784 req = vha->hw->req_q_map[qid]; 3785 } else { 3786 return NULL; 3787 } 3788 3789 h &= QLA_CMD_HANDLE_MASK; 3790 3791 if (h != QLA_TGT_NULL_HANDLE) { 3792 if (unlikely(h >= req->num_outstanding_cmds)) { 3793 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3794 "qla_target(%d): Wrong handle %x received\n", 3795 vha->vp_idx, handle); 3796 return NULL; 3797 } 3798 3799 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h]; 3800 if (unlikely(cmd == NULL)) { 3801 ql_dbg(ql_dbg_async, vha, 0xe053, 3802 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3803 vha->vp_idx, handle, req->id, rsp->id); 3804 return NULL; 3805 } 3806 req->outstanding_cmds[h] = NULL; 3807 } else if (ctio != NULL) { 3808 /* We can't get loop ID from CTIO7 */ 3809 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3810 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3811 "support NULL handles\n", vha->vp_idx); 3812 return NULL; 3813 } 3814 3815 return cmd; 3816 } 3817 3818 /* hardware_lock should be held by caller. */ 3819 void 3820 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3821 { 3822 struct qla_hw_data *ha = vha->hw; 3823 3824 if (cmd->sg_mapped) 3825 qlt_unmap_sg(vha, cmd); 3826 3827 /* TODO: fix debug message type and ids. */ 3828 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3829 ql_dbg(ql_dbg_io, vha, 0xff00, 3830 "HOST-ABORT: state=PROCESSED.\n"); 3831 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3832 cmd->write_data_transferred = 0; 3833 cmd->state = QLA_TGT_STATE_DATA_IN; 3834 3835 ql_dbg(ql_dbg_io, vha, 0xff01, 3836 "HOST-ABORT: state=DATA_IN.\n"); 3837 3838 ha->tgt.tgt_ops->handle_data(cmd); 3839 return; 3840 } else { 3841 ql_dbg(ql_dbg_io, vha, 0xff03, 3842 "HOST-ABORT: state=BAD(%d).\n", 3843 cmd->state); 3844 dump_stack(); 3845 } 3846 3847 cmd->trc_flags |= TRC_FLUSH; 3848 ha->tgt.tgt_ops->free_cmd(cmd); 3849 } 3850 3851 /* 3852 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3853 */ 3854 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3855 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3856 { 3857 struct qla_hw_data *ha = vha->hw; 3858 struct se_cmd *se_cmd; 3859 struct qla_tgt_cmd *cmd; 3860 struct qla_qpair *qpair = rsp->qpair; 3861 3862 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3863 /* That could happen only in case of an error/reset/abort */ 3864 if (status != CTIO_SUCCESS) { 3865 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3866 "Intermediate CTIO received" 3867 " (status %x)\n", status); 3868 } 3869 return; 3870 } 3871 3872 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3873 if (cmd == NULL) 3874 return; 3875 3876 se_cmd = &cmd->se_cmd; 3877 cmd->cmd_sent_to_fw = 0; 3878 3879 qlt_unmap_sg(vha, cmd); 3880 3881 if (unlikely(status != CTIO_SUCCESS)) { 3882 switch (status & 0xFFFF) { 3883 case CTIO_LIP_RESET: 3884 case CTIO_TARGET_RESET: 3885 case CTIO_ABORTED: 3886 /* driver request abort via Terminate exchange */ 3887 case CTIO_TIMEOUT: 3888 case CTIO_INVALID_RX_ID: 3889 /* They are OK */ 3890 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3891 "qla_target(%d): CTIO with " 3892 "status %#x received, state %x, se_cmd %p, " 3893 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3894 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3895 status, cmd->state, se_cmd); 3896 break; 3897 3898 case CTIO_PORT_LOGGED_OUT: 3899 case CTIO_PORT_UNAVAILABLE: 3900 { 3901 int logged_out = 3902 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3903 3904 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3905 "qla_target(%d): CTIO with %s status %x " 3906 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3907 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3908 status, cmd->state, se_cmd); 3909 3910 if (logged_out && cmd->sess) { 3911 /* 3912 * Session is already logged out, but we need 3913 * to notify initiator, who's not aware of this 3914 */ 3915 cmd->sess->logout_on_delete = 0; 3916 cmd->sess->send_els_logo = 1; 3917 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3918 "%s %d %8phC post del sess\n", 3919 __func__, __LINE__, cmd->sess->port_name); 3920 3921 qlt_schedule_sess_for_deletion(cmd->sess); 3922 } 3923 break; 3924 } 3925 case CTIO_DIF_ERROR: { 3926 struct ctio_crc_from_fw *crc = 3927 (struct ctio_crc_from_fw *)ctio; 3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3929 "qla_target(%d): CTIO with DIF_ERROR status %x " 3930 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3931 "expect_dif[0x%llx]\n", 3932 vha->vp_idx, status, cmd->state, se_cmd, 3933 *((u64 *)&crc->actual_dif[0]), 3934 *((u64 *)&crc->expected_dif[0])); 3935 3936 qlt_handle_dif_error(qpair, cmd, ctio); 3937 return; 3938 } 3939 default: 3940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3941 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3942 vha->vp_idx, status, cmd->state, se_cmd); 3943 break; 3944 } 3945 3946 3947 /* "cmd->aborted" means 3948 * cmd is already aborted/terminated, we don't 3949 * need to terminate again. The exchange is already 3950 * cleaned up/freed at FW level. Just cleanup at driver 3951 * level. 3952 */ 3953 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 3954 (!cmd->aborted)) { 3955 cmd->trc_flags |= TRC_CTIO_ERR; 3956 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 3957 return; 3958 } 3959 } 3960 3961 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3962 cmd->trc_flags |= TRC_CTIO_DONE; 3963 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3964 cmd->state = QLA_TGT_STATE_DATA_IN; 3965 3966 if (status == CTIO_SUCCESS) 3967 cmd->write_data_transferred = 1; 3968 3969 ha->tgt.tgt_ops->handle_data(cmd); 3970 return; 3971 } else if (cmd->aborted) { 3972 cmd->trc_flags |= TRC_CTIO_ABORTED; 3973 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 3974 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 3975 } else { 3976 cmd->trc_flags |= TRC_CTIO_STRANGE; 3977 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 3978 "qla_target(%d): A command in state (%d) should " 3979 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 3980 } 3981 3982 if (unlikely(status != CTIO_SUCCESS) && 3983 !cmd->aborted) { 3984 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 3985 dump_stack(); 3986 } 3987 3988 ha->tgt.tgt_ops->free_cmd(cmd); 3989 } 3990 3991 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 3992 uint8_t task_codes) 3993 { 3994 int fcp_task_attr; 3995 3996 switch (task_codes) { 3997 case ATIO_SIMPLE_QUEUE: 3998 fcp_task_attr = TCM_SIMPLE_TAG; 3999 break; 4000 case ATIO_HEAD_OF_QUEUE: 4001 fcp_task_attr = TCM_HEAD_TAG; 4002 break; 4003 case ATIO_ORDERED_QUEUE: 4004 fcp_task_attr = TCM_ORDERED_TAG; 4005 break; 4006 case ATIO_ACA_QUEUE: 4007 fcp_task_attr = TCM_ACA_TAG; 4008 break; 4009 case ATIO_UNTAGGED: 4010 fcp_task_attr = TCM_SIMPLE_TAG; 4011 break; 4012 default: 4013 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4014 "qla_target: unknown task code %x, use ORDERED instead\n", 4015 task_codes); 4016 fcp_task_attr = TCM_ORDERED_TAG; 4017 break; 4018 } 4019 4020 return fcp_task_attr; 4021 } 4022 4023 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 4024 uint8_t *); 4025 /* 4026 * Process context for I/O path into tcm_qla2xxx code 4027 */ 4028 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4029 { 4030 scsi_qla_host_t *vha = cmd->vha; 4031 struct qla_hw_data *ha = vha->hw; 4032 struct fc_port *sess = cmd->sess; 4033 struct atio_from_isp *atio = &cmd->atio; 4034 unsigned char *cdb; 4035 unsigned long flags; 4036 uint32_t data_length; 4037 int ret, fcp_task_attr, data_dir, bidi = 0; 4038 struct qla_qpair *qpair = cmd->qpair; 4039 4040 cmd->cmd_in_wq = 0; 4041 cmd->trc_flags |= TRC_DO_WORK; 4042 4043 if (cmd->aborted) { 4044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4045 "cmd with tag %u is aborted\n", 4046 cmd->atio.u.isp24.exchange_addr); 4047 goto out_term; 4048 } 4049 4050 spin_lock_init(&cmd->cmd_lock); 4051 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4052 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4053 4054 if (atio->u.isp24.fcp_cmnd.rddata && 4055 atio->u.isp24.fcp_cmnd.wrdata) { 4056 bidi = 1; 4057 data_dir = DMA_TO_DEVICE; 4058 } else if (atio->u.isp24.fcp_cmnd.rddata) 4059 data_dir = DMA_FROM_DEVICE; 4060 else if (atio->u.isp24.fcp_cmnd.wrdata) 4061 data_dir = DMA_TO_DEVICE; 4062 else 4063 data_dir = DMA_NONE; 4064 4065 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4066 atio->u.isp24.fcp_cmnd.task_attr); 4067 data_length = be32_to_cpu(get_unaligned((uint32_t *) 4068 &atio->u.isp24.fcp_cmnd.add_cdb[ 4069 atio->u.isp24.fcp_cmnd.add_cdb_len])); 4070 4071 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4072 fcp_task_attr, data_dir, bidi); 4073 if (ret != 0) 4074 goto out_term; 4075 /* 4076 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 4077 */ 4078 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4079 ha->tgt.tgt_ops->put_sess(sess); 4080 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4081 return; 4082 4083 out_term: 4084 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4085 /* 4086 * cmd has not sent to target yet, so pass NULL as the second 4087 * argument to qlt_send_term_exchange() and free the memory here. 4088 */ 4089 cmd->trc_flags |= TRC_DO_WORK_ERR; 4090 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4091 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4092 4093 qlt_decr_num_pend_cmds(vha); 4094 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 4095 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4096 4097 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4098 ha->tgt.tgt_ops->put_sess(sess); 4099 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4100 } 4101 4102 static void qlt_do_work(struct work_struct *work) 4103 { 4104 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4105 scsi_qla_host_t *vha = cmd->vha; 4106 unsigned long flags; 4107 4108 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4109 list_del(&cmd->cmd_list); 4110 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4111 4112 __qlt_do_work(cmd); 4113 } 4114 4115 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4116 { 4117 unsigned long flags; 4118 struct qla_hw_data *ha = vha->hw; 4119 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4120 void *node; 4121 u64 key = 0; 4122 4123 ql_log(ql_log_info, vha, 0x706c, 4124 "User update Number of Active Qpairs %d\n", 4125 ha->tgt.num_act_qpairs); 4126 4127 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4128 4129 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4130 btree_remove64(&tgt->lun_qpair_map, key); 4131 4132 ha->base_qpair->lun_cnt = 0; 4133 for (key = 0; key < ha->max_qpairs; key++) 4134 if (ha->queue_pair_map[key]) 4135 ha->queue_pair_map[key]->lun_cnt = 0; 4136 4137 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4138 } 4139 4140 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4141 struct qla_tgt_cmd *cmd) 4142 { 4143 struct qla_qpair *qpair, *qp; 4144 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4145 struct qla_qpair_hint *h; 4146 4147 if (vha->flags.qpairs_available) { 4148 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4149 if (unlikely(!h)) { 4150 /* spread lun to qpair ratio evently */ 4151 int lcnt = 0, rc; 4152 struct scsi_qla_host *base_vha = 4153 pci_get_drvdata(vha->hw->pdev); 4154 4155 qpair = vha->hw->base_qpair; 4156 if (qpair->lun_cnt == 0) { 4157 qpair->lun_cnt++; 4158 h = qla_qpair_to_hint(tgt, qpair); 4159 BUG_ON(!h); 4160 rc = btree_insert64(&tgt->lun_qpair_map, 4161 cmd->unpacked_lun, h, GFP_ATOMIC); 4162 if (rc) { 4163 qpair->lun_cnt--; 4164 ql_log(ql_log_info, vha, 0xd037, 4165 "Unable to insert lun %llx into lun_qpair_map\n", 4166 cmd->unpacked_lun); 4167 } 4168 goto out; 4169 } else { 4170 lcnt = qpair->lun_cnt; 4171 } 4172 4173 h = NULL; 4174 list_for_each_entry(qp, &base_vha->qp_list, 4175 qp_list_elem) { 4176 if (qp->lun_cnt == 0) { 4177 qp->lun_cnt++; 4178 h = qla_qpair_to_hint(tgt, qp); 4179 BUG_ON(!h); 4180 rc = btree_insert64(&tgt->lun_qpair_map, 4181 cmd->unpacked_lun, h, GFP_ATOMIC); 4182 if (rc) { 4183 qp->lun_cnt--; 4184 ql_log(ql_log_info, vha, 0xd038, 4185 "Unable to insert lun %llx into lun_qpair_map\n", 4186 cmd->unpacked_lun); 4187 } 4188 qpair = qp; 4189 goto out; 4190 } else { 4191 if (qp->lun_cnt < lcnt) { 4192 lcnt = qp->lun_cnt; 4193 qpair = qp; 4194 continue; 4195 } 4196 } 4197 } 4198 BUG_ON(!qpair); 4199 qpair->lun_cnt++; 4200 h = qla_qpair_to_hint(tgt, qpair); 4201 BUG_ON(!h); 4202 rc = btree_insert64(&tgt->lun_qpair_map, 4203 cmd->unpacked_lun, h, GFP_ATOMIC); 4204 if (rc) { 4205 qpair->lun_cnt--; 4206 ql_log(ql_log_info, vha, 0xd039, 4207 "Unable to insert lun %llx into lun_qpair_map\n", 4208 cmd->unpacked_lun); 4209 } 4210 } 4211 } else { 4212 h = &tgt->qphints[0]; 4213 } 4214 out: 4215 cmd->qpair = h->qpair; 4216 cmd->se_cmd.cpuid = h->cpuid; 4217 } 4218 4219 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4220 struct fc_port *sess, 4221 struct atio_from_isp *atio) 4222 { 4223 struct se_session *se_sess = sess->se_sess; 4224 struct qla_tgt_cmd *cmd; 4225 int tag; 4226 4227 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 4228 if (tag < 0) 4229 return NULL; 4230 4231 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4232 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4233 cmd->cmd_type = TYPE_TGT_CMD; 4234 memcpy(&cmd->atio, atio, sizeof(*atio)); 4235 cmd->state = QLA_TGT_STATE_NEW; 4236 cmd->tgt = vha->vha_tgt.qla_tgt; 4237 qlt_incr_num_pend_cmds(vha); 4238 cmd->vha = vha; 4239 cmd->se_cmd.map_tag = tag; 4240 cmd->sess = sess; 4241 cmd->loop_id = sess->loop_id; 4242 cmd->conf_compl_supported = sess->conf_compl_supported; 4243 4244 cmd->trc_flags = 0; 4245 cmd->jiffies_at_alloc = get_jiffies_64(); 4246 4247 cmd->unpacked_lun = scsilun_to_int( 4248 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4249 qlt_assign_qpair(vha, cmd); 4250 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4251 cmd->vp_idx = vha->vp_idx; 4252 4253 return cmd; 4254 } 4255 4256 /* ha->hardware_lock supposed to be held on entry */ 4257 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4258 struct atio_from_isp *atio) 4259 { 4260 struct qla_hw_data *ha = vha->hw; 4261 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4262 struct fc_port *sess; 4263 struct qla_tgt_cmd *cmd; 4264 unsigned long flags; 4265 port_id_t id; 4266 4267 if (unlikely(tgt->tgt_stop)) { 4268 ql_dbg(ql_dbg_io, vha, 0x3061, 4269 "New command while device %p is shutting down\n", tgt); 4270 return -ENODEV; 4271 } 4272 4273 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 4274 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 4275 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 4276 if (IS_SW_RESV_ADDR(id)) 4277 return -EBUSY; 4278 4279 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4280 if (unlikely(!sess)) 4281 return -EFAULT; 4282 4283 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4284 * session deletion, but it's still in sess_del_work wq */ 4285 if (sess->deleted) { 4286 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4287 "New command while old session %p is being deleted\n", 4288 sess); 4289 return -EFAULT; 4290 } 4291 4292 /* 4293 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4294 */ 4295 if (!kref_get_unless_zero(&sess->sess_kref)) { 4296 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4297 "%s: kref_get fail, %8phC oxid %x \n", 4298 __func__, sess->port_name, 4299 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4300 return -EFAULT; 4301 } 4302 4303 cmd = qlt_get_tag(vha, sess, atio); 4304 if (!cmd) { 4305 ql_dbg(ql_dbg_io, vha, 0x3062, 4306 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4307 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4308 ha->tgt.tgt_ops->put_sess(sess); 4309 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4310 return -EBUSY; 4311 } 4312 4313 cmd->cmd_in_wq = 1; 4314 cmd->trc_flags |= TRC_NEW_CMD; 4315 4316 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4317 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4318 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4319 4320 INIT_WORK(&cmd->work, qlt_do_work); 4321 if (vha->flags.qpairs_available) { 4322 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4323 } else if (ha->msix_count) { 4324 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4325 queue_work_on(smp_processor_id(), qla_tgt_wq, 4326 &cmd->work); 4327 else 4328 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4329 &cmd->work); 4330 } else { 4331 queue_work(qla_tgt_wq, &cmd->work); 4332 } 4333 4334 return 0; 4335 } 4336 4337 /* ha->hardware_lock supposed to be held on entry */ 4338 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4339 int fn, void *iocb, int flags) 4340 { 4341 struct scsi_qla_host *vha = sess->vha; 4342 struct qla_hw_data *ha = vha->hw; 4343 struct qla_tgt_mgmt_cmd *mcmd; 4344 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4345 int res; 4346 4347 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4348 if (!mcmd) { 4349 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4350 "qla_target(%d): Allocation of management " 4351 "command failed, some commands and their data could " 4352 "leak\n", vha->vp_idx); 4353 return -ENOMEM; 4354 } 4355 memset(mcmd, 0, sizeof(*mcmd)); 4356 mcmd->sess = sess; 4357 4358 if (iocb) { 4359 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4360 sizeof(mcmd->orig_iocb.imm_ntfy)); 4361 } 4362 mcmd->tmr_func = fn; 4363 mcmd->flags = flags; 4364 mcmd->reset_count = ha->base_qpair->chip_reset; 4365 mcmd->qpair = ha->base_qpair; 4366 mcmd->vha = vha; 4367 4368 switch (fn) { 4369 case QLA_TGT_LUN_RESET: 4370 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4371 break; 4372 } 4373 4374 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0); 4375 if (res != 0) { 4376 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, 4377 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", 4378 sess->vha->vp_idx, res); 4379 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4380 return -EFAULT; 4381 } 4382 4383 return 0; 4384 } 4385 4386 /* ha->hardware_lock supposed to be held on entry */ 4387 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4388 { 4389 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4390 struct qla_hw_data *ha = vha->hw; 4391 struct fc_port *sess; 4392 u64 unpacked_lun; 4393 int fn; 4394 unsigned long flags; 4395 4396 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4397 4398 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4399 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4400 a->u.isp24.fcp_hdr.s_id); 4401 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4402 4403 unpacked_lun = 4404 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4405 4406 if (sess == NULL || sess->deleted) 4407 return -EFAULT; 4408 4409 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4410 } 4411 4412 /* ha->hardware_lock supposed to be held on entry */ 4413 static int __qlt_abort_task(struct scsi_qla_host *vha, 4414 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4415 { 4416 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4417 struct qla_hw_data *ha = vha->hw; 4418 struct qla_tgt_mgmt_cmd *mcmd; 4419 u64 unpacked_lun; 4420 int rc; 4421 4422 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4423 if (mcmd == NULL) { 4424 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4425 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4426 vha->vp_idx, __func__); 4427 return -ENOMEM; 4428 } 4429 memset(mcmd, 0, sizeof(*mcmd)); 4430 4431 mcmd->sess = sess; 4432 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4433 sizeof(mcmd->orig_iocb.imm_ntfy)); 4434 4435 unpacked_lun = 4436 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4437 mcmd->reset_count = ha->base_qpair->chip_reset; 4438 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4439 mcmd->qpair = ha->base_qpair; 4440 4441 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4442 le16_to_cpu(iocb->u.isp2x.seq_id)); 4443 if (rc != 0) { 4444 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4445 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4446 vha->vp_idx, rc); 4447 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4448 return -EFAULT; 4449 } 4450 4451 return 0; 4452 } 4453 4454 /* ha->hardware_lock supposed to be held on entry */ 4455 static int qlt_abort_task(struct scsi_qla_host *vha, 4456 struct imm_ntfy_from_isp *iocb) 4457 { 4458 struct qla_hw_data *ha = vha->hw; 4459 struct fc_port *sess; 4460 int loop_id; 4461 unsigned long flags; 4462 4463 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4464 4465 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4466 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4467 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4468 4469 if (sess == NULL) { 4470 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4471 "qla_target(%d): task abort for unexisting " 4472 "session\n", vha->vp_idx); 4473 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4474 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4475 } 4476 4477 return __qlt_abort_task(vha, iocb, sess); 4478 } 4479 4480 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4481 { 4482 if (rc != MBS_COMMAND_COMPLETE) { 4483 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4484 "%s: se_sess %p / sess %p from" 4485 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4486 " LOGO failed: %#x\n", 4487 __func__, 4488 fcport->se_sess, 4489 fcport, 4490 fcport->port_name, fcport->loop_id, 4491 fcport->d_id.b.domain, fcport->d_id.b.area, 4492 fcport->d_id.b.al_pa, rc); 4493 } 4494 4495 fcport->logout_completed = 1; 4496 } 4497 4498 /* 4499 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4500 * 4501 * Schedules sessions with matching port_id/loop_id but different wwn for 4502 * deletion. Returns existing session with matching wwn if present. 4503 * Null otherwise. 4504 */ 4505 struct fc_port * 4506 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4507 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4508 { 4509 struct fc_port *sess = NULL, *other_sess; 4510 uint64_t other_wwn; 4511 4512 *conflict_sess = NULL; 4513 4514 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4515 4516 other_wwn = wwn_to_u64(other_sess->port_name); 4517 4518 if (wwn == other_wwn) { 4519 WARN_ON(sess); 4520 sess = other_sess; 4521 continue; 4522 } 4523 4524 /* find other sess with nport_id collision */ 4525 if (port_id.b24 == other_sess->d_id.b24) { 4526 if (loop_id != other_sess->loop_id) { 4527 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4528 "Invalidating sess %p loop_id %d wwn %llx.\n", 4529 other_sess, other_sess->loop_id, other_wwn); 4530 4531 /* 4532 * logout_on_delete is set by default, but another 4533 * session that has the same s_id/loop_id combo 4534 * might have cleared it when requested this session 4535 * deletion, so don't touch it 4536 */ 4537 qlt_schedule_sess_for_deletion(other_sess); 4538 } else { 4539 /* 4540 * Another wwn used to have our s_id/loop_id 4541 * kill the session, but don't free the loop_id 4542 */ 4543 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, 4544 "Invalidating sess %p loop_id %d wwn %llx.\n", 4545 other_sess, other_sess->loop_id, other_wwn); 4546 4547 other_sess->keep_nport_handle = 1; 4548 if (other_sess->disc_state != DSC_DELETED) 4549 *conflict_sess = other_sess; 4550 qlt_schedule_sess_for_deletion(other_sess); 4551 } 4552 continue; 4553 } 4554 4555 /* find other sess with nport handle collision */ 4556 if ((loop_id == other_sess->loop_id) && 4557 (loop_id != FC_NO_LOOP_ID)) { 4558 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4559 "Invalidating sess %p loop_id %d wwn %llx.\n", 4560 other_sess, other_sess->loop_id, other_wwn); 4561 4562 /* Same loop_id but different s_id 4563 * Ok to kill and logout */ 4564 qlt_schedule_sess_for_deletion(other_sess); 4565 } 4566 } 4567 4568 return sess; 4569 } 4570 4571 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4572 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4573 { 4574 struct qla_tgt_sess_op *op; 4575 struct qla_tgt_cmd *cmd; 4576 uint32_t key; 4577 int count = 0; 4578 unsigned long flags; 4579 4580 key = (((u32)s_id->b.domain << 16) | 4581 ((u32)s_id->b.area << 8) | 4582 ((u32)s_id->b.al_pa)); 4583 4584 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4585 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4586 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4587 4588 if (op_key == key) { 4589 op->aborted = true; 4590 count++; 4591 } 4592 } 4593 4594 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4595 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4596 if (op_key == key) { 4597 op->aborted = true; 4598 count++; 4599 } 4600 } 4601 4602 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4603 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4604 if (cmd_key == key) { 4605 cmd->aborted = 1; 4606 count++; 4607 } 4608 } 4609 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4610 4611 return count; 4612 } 4613 4614 static int qlt_handle_login(struct scsi_qla_host *vha, 4615 struct imm_ntfy_from_isp *iocb) 4616 { 4617 struct fc_port *sess = NULL, *conflict_sess = NULL; 4618 uint64_t wwn; 4619 port_id_t port_id; 4620 uint16_t loop_id, wd3_lo; 4621 int res = 0; 4622 struct qlt_plogi_ack_t *pla; 4623 unsigned long flags; 4624 4625 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4626 4627 port_id.b.domain = iocb->u.isp24.port_id[2]; 4628 port_id.b.area = iocb->u.isp24.port_id[1]; 4629 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4630 port_id.b.rsvd_1 = 0; 4631 4632 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4633 4634 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4635 abort_cmds_for_s_id(vha, &port_id); 4636 4637 if (wwn) { 4638 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4639 sess = qlt_find_sess_invalidate_other(vha, wwn, 4640 port_id, loop_id, &conflict_sess); 4641 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4642 } 4643 4644 if (IS_SW_RESV_ADDR(port_id)) { 4645 res = 1; 4646 goto out; 4647 } 4648 4649 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4650 if (!pla) { 4651 qlt_send_term_imm_notif(vha, iocb, 1); 4652 goto out; 4653 } 4654 4655 if (conflict_sess) { 4656 conflict_sess->login_gen++; 4657 qlt_plogi_ack_link(vha, pla, conflict_sess, 4658 QLT_PLOGI_LINK_CONFLICT); 4659 } 4660 4661 if (!sess) { 4662 pla->ref_count++; 4663 ql_dbg(ql_dbg_disc, vha, 0xffff, 4664 "%s %d %8phC post new sess\n", 4665 __func__, __LINE__, iocb->u.isp24.port_name); 4666 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4667 qla24xx_post_newsess_work(vha, &port_id, 4668 iocb->u.isp24.port_name, 4669 iocb->u.isp24.u.plogi.node_name, 4670 pla, FC4_TYPE_UNKNOWN); 4671 else 4672 qla24xx_post_newsess_work(vha, &port_id, 4673 iocb->u.isp24.port_name, NULL, 4674 pla, FC4_TYPE_UNKNOWN); 4675 4676 goto out; 4677 } 4678 4679 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4680 sess->d_id = port_id; 4681 sess->login_gen++; 4682 4683 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4684 sess->fw_login_state = DSC_LS_PRLI_PEND; 4685 sess->local = 0; 4686 sess->loop_id = loop_id; 4687 sess->d_id = port_id; 4688 sess->fw_login_state = DSC_LS_PRLI_PEND; 4689 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4690 4691 if (wd3_lo & BIT_7) 4692 sess->conf_compl_supported = 1; 4693 4694 if ((wd3_lo & BIT_4) == 0) 4695 sess->port_type = FCT_INITIATOR; 4696 else 4697 sess->port_type = FCT_TARGET; 4698 4699 } else 4700 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4701 4702 4703 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4704 "%s %d %8phC DS %d\n", 4705 __func__, __LINE__, sess->port_name, sess->disc_state); 4706 4707 switch (sess->disc_state) { 4708 case DSC_DELETED: 4709 qlt_plogi_ack_unref(vha, pla); 4710 break; 4711 4712 default: 4713 /* 4714 * Under normal circumstances we want to release nport handle 4715 * during LOGO process to avoid nport handle leaks inside FW. 4716 * The exception is when LOGO is done while another PLOGI with 4717 * the same nport handle is waiting as might be the case here. 4718 * Note: there is always a possibily of a race where session 4719 * deletion has already started for other reasons (e.g. ACL 4720 * removal) and now PLOGI arrives: 4721 * 1. if PLOGI arrived in FW after nport handle has been freed, 4722 * FW must have assigned this PLOGI a new/same handle and we 4723 * can proceed ACK'ing it as usual when session deletion 4724 * completes. 4725 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4726 * bit reached it, the handle has now been released. We'll 4727 * get an error when we ACK this PLOGI. Nothing will be sent 4728 * back to initiator. Initiator should eventually retry 4729 * PLOGI and situation will correct itself. 4730 */ 4731 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4732 (sess->d_id.b24 == port_id.b24)); 4733 4734 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4735 "%s %d %8phC post del sess\n", 4736 __func__, __LINE__, sess->port_name); 4737 4738 4739 qlt_schedule_sess_for_deletion(sess); 4740 break; 4741 } 4742 out: 4743 return res; 4744 } 4745 4746 /* 4747 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4748 */ 4749 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4750 struct imm_ntfy_from_isp *iocb) 4751 { 4752 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4753 struct qla_hw_data *ha = vha->hw; 4754 struct fc_port *sess = NULL, *conflict_sess = NULL; 4755 uint64_t wwn; 4756 port_id_t port_id; 4757 uint16_t loop_id; 4758 uint16_t wd3_lo; 4759 int res = 0; 4760 unsigned long flags; 4761 4762 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4763 4764 port_id.b.domain = iocb->u.isp24.port_id[2]; 4765 port_id.b.area = iocb->u.isp24.port_id[1]; 4766 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4767 port_id.b.rsvd_1 = 0; 4768 4769 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4770 4771 ql_dbg(ql_dbg_disc, vha, 0xf026, 4772 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4773 vha->vp_idx, iocb->u.isp24.port_id[2], 4774 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4775 iocb->u.isp24.status_subcode, loop_id, 4776 iocb->u.isp24.port_name); 4777 4778 /* res = 1 means ack at the end of thread 4779 * res = 0 means ack async/later. 4780 */ 4781 switch (iocb->u.isp24.status_subcode) { 4782 case ELS_PLOGI: 4783 res = qlt_handle_login(vha, iocb); 4784 break; 4785 4786 case ELS_PRLI: 4787 if (N2N_TOPO(ha)) { 4788 sess = qla2x00_find_fcport_by_wwpn(vha, 4789 iocb->u.isp24.port_name, 1); 4790 4791 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4792 ql_dbg(ql_dbg_disc, vha, 0xffff, 4793 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4794 __func__, __LINE__, 4795 iocb->u.isp24.port_name); 4796 qlt_send_term_imm_notif(vha, iocb, 1); 4797 break; 4798 } 4799 4800 res = qlt_handle_login(vha, iocb); 4801 break; 4802 } 4803 4804 if (IS_SW_RESV_ADDR(port_id)) { 4805 res = 1; 4806 break; 4807 } 4808 4809 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4810 4811 if (wwn) { 4812 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4813 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4814 loop_id, &conflict_sess); 4815 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4816 } 4817 4818 if (conflict_sess) { 4819 switch (conflict_sess->disc_state) { 4820 case DSC_DELETED: 4821 case DSC_DELETE_PEND: 4822 break; 4823 default: 4824 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4825 "PRLI with conflicting sess %p port %8phC\n", 4826 conflict_sess, conflict_sess->port_name); 4827 conflict_sess->fw_login_state = 4828 DSC_LS_PORT_UNAVAIL; 4829 qlt_send_term_imm_notif(vha, iocb, 1); 4830 res = 0; 4831 break; 4832 } 4833 } 4834 4835 if (sess != NULL) { 4836 bool delete = false; 4837 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4838 switch (sess->fw_login_state) { 4839 case DSC_LS_PLOGI_PEND: 4840 case DSC_LS_PLOGI_COMP: 4841 case DSC_LS_PRLI_COMP: 4842 break; 4843 default: 4844 delete = true; 4845 break; 4846 } 4847 4848 switch (sess->disc_state) { 4849 case DSC_LOGIN_PEND: 4850 case DSC_GPDB: 4851 case DSC_GPSC: 4852 case DSC_UPD_FCPORT: 4853 case DSC_LOGIN_COMPLETE: 4854 case DSC_ADISC: 4855 delete = false; 4856 break; 4857 default: 4858 break; 4859 } 4860 4861 if (delete) { 4862 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4863 flags); 4864 /* 4865 * Impatient initiator sent PRLI before last 4866 * PLOGI could finish. Will force him to re-try, 4867 * while last one finishes. 4868 */ 4869 ql_log(ql_log_warn, sess->vha, 0xf095, 4870 "sess %p PRLI received, before plogi ack.\n", 4871 sess); 4872 qlt_send_term_imm_notif(vha, iocb, 1); 4873 res = 0; 4874 break; 4875 } 4876 4877 /* 4878 * This shouldn't happen under normal circumstances, 4879 * since we have deleted the old session during PLOGI 4880 */ 4881 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4882 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4883 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4884 4885 sess->local = 0; 4886 sess->loop_id = loop_id; 4887 sess->d_id = port_id; 4888 sess->fw_login_state = DSC_LS_PRLI_PEND; 4889 4890 if (wd3_lo & BIT_7) 4891 sess->conf_compl_supported = 1; 4892 4893 if ((wd3_lo & BIT_4) == 0) 4894 sess->port_type = FCT_INITIATOR; 4895 else 4896 sess->port_type = FCT_TARGET; 4897 4898 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4899 } 4900 res = 1; /* send notify ack */ 4901 4902 /* Make session global (not used in fabric mode) */ 4903 if (ha->current_topology != ISP_CFG_F) { 4904 if (sess) { 4905 ql_dbg(ql_dbg_disc, vha, 0x20fa, 4906 "%s %d %8phC post nack\n", 4907 __func__, __LINE__, sess->port_name); 4908 qla24xx_post_nack_work(vha, sess, iocb, 4909 SRB_NACK_PRLI); 4910 res = 0; 4911 } else { 4912 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4913 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4914 qla2xxx_wake_dpc(vha); 4915 } 4916 } else { 4917 if (sess) { 4918 ql_dbg(ql_dbg_disc, vha, 0x20fb, 4919 "%s %d %8phC post nack\n", 4920 __func__, __LINE__, sess->port_name); 4921 qla24xx_post_nack_work(vha, sess, iocb, 4922 SRB_NACK_PRLI); 4923 res = 0; 4924 } 4925 } 4926 break; 4927 4928 case ELS_TPRLO: 4929 if (le16_to_cpu(iocb->u.isp24.flags) & 4930 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 4931 loop_id = 0xFFFF; 4932 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 4933 res = 1; 4934 break; 4935 } 4936 /* fall through */ 4937 case ELS_LOGO: 4938 case ELS_PRLO: 4939 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4940 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 4941 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4942 4943 if (sess) { 4944 sess->login_gen++; 4945 sess->fw_login_state = DSC_LS_LOGO_PEND; 4946 sess->logo_ack_needed = 1; 4947 memcpy(sess->iocb, iocb, IOCB_SIZE); 4948 } 4949 4950 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4951 4952 ql_dbg(ql_dbg_disc, vha, 0x20fc, 4953 "%s: logo %llx res %d sess %p ", 4954 __func__, wwn, res, sess); 4955 if (res == 0) { 4956 /* 4957 * cmd went upper layer, look for qlt_xmit_tm_rsp() 4958 * for LOGO_ACK & sess delete 4959 */ 4960 BUG_ON(!sess); 4961 res = 0; 4962 } else { 4963 /* cmd did not go to upper layer. */ 4964 if (sess) { 4965 qlt_schedule_sess_for_deletion(sess); 4966 res = 0; 4967 } 4968 /* else logo will be ack */ 4969 } 4970 break; 4971 case ELS_PDISC: 4972 case ELS_ADISC: 4973 { 4974 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4975 if (tgt->link_reinit_iocb_pending) { 4976 qlt_send_notify_ack(ha->base_qpair, 4977 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 4978 tgt->link_reinit_iocb_pending = 0; 4979 } 4980 4981 sess = qla2x00_find_fcport_by_wwpn(vha, 4982 iocb->u.isp24.port_name, 1); 4983 if (sess) { 4984 ql_dbg(ql_dbg_disc, vha, 0x20fd, 4985 "sess %p lid %d|%d DS %d LS %d\n", 4986 sess, sess->loop_id, loop_id, 4987 sess->disc_state, sess->fw_login_state); 4988 } 4989 4990 res = 1; /* send notify ack */ 4991 break; 4992 } 4993 4994 case ELS_FLOGI: /* should never happen */ 4995 default: 4996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 4997 "qla_target(%d): Unsupported ELS command %x " 4998 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 4999 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5000 break; 5001 } 5002 5003 ql_dbg(ql_dbg_disc, vha, 0xf026, 5004 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5005 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5006 5007 return res; 5008 } 5009 5010 /* 5011 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5012 */ 5013 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5014 struct imm_ntfy_from_isp *iocb) 5015 { 5016 struct qla_hw_data *ha = vha->hw; 5017 uint32_t add_flags = 0; 5018 int send_notify_ack = 1; 5019 uint16_t status; 5020 5021 status = le16_to_cpu(iocb->u.isp2x.status); 5022 switch (status) { 5023 case IMM_NTFY_LIP_RESET: 5024 { 5025 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5026 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5027 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5028 iocb->u.isp24.status_subcode); 5029 5030 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5031 send_notify_ack = 0; 5032 break; 5033 } 5034 5035 case IMM_NTFY_LIP_LINK_REINIT: 5036 { 5037 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5039 "qla_target(%d): LINK REINIT (loop %#x, " 5040 "subcode %x)\n", vha->vp_idx, 5041 le16_to_cpu(iocb->u.isp24.nport_handle), 5042 iocb->u.isp24.status_subcode); 5043 if (tgt->link_reinit_iocb_pending) { 5044 qlt_send_notify_ack(ha->base_qpair, 5045 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5046 } 5047 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5048 tgt->link_reinit_iocb_pending = 1; 5049 /* 5050 * QLogic requires to wait after LINK REINIT for possible 5051 * PDISC or ADISC ELS commands 5052 */ 5053 send_notify_ack = 0; 5054 break; 5055 } 5056 5057 case IMM_NTFY_PORT_LOGOUT: 5058 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5059 "qla_target(%d): Port logout (loop " 5060 "%#x, subcode %x)\n", vha->vp_idx, 5061 le16_to_cpu(iocb->u.isp24.nport_handle), 5062 iocb->u.isp24.status_subcode); 5063 5064 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5065 send_notify_ack = 0; 5066 /* The sessions will be cleared in the callback, if needed */ 5067 break; 5068 5069 case IMM_NTFY_GLBL_TPRLO: 5070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5071 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5072 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5073 send_notify_ack = 0; 5074 /* The sessions will be cleared in the callback, if needed */ 5075 break; 5076 5077 case IMM_NTFY_PORT_CONFIG: 5078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5079 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5080 status); 5081 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5082 send_notify_ack = 0; 5083 /* The sessions will be cleared in the callback, if needed */ 5084 break; 5085 5086 case IMM_NTFY_GLBL_LOGO: 5087 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5088 "qla_target(%d): Link failure detected\n", 5089 vha->vp_idx); 5090 /* I_T nexus loss */ 5091 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5092 send_notify_ack = 0; 5093 break; 5094 5095 case IMM_NTFY_IOCB_OVERFLOW: 5096 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5097 "qla_target(%d): Cannot provide requested " 5098 "capability (IOCB overflowed the immediate notify " 5099 "resource count)\n", vha->vp_idx); 5100 break; 5101 5102 case IMM_NTFY_ABORT_TASK: 5103 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5104 "qla_target(%d): Abort Task (S %08x I %#x -> " 5105 "L %#x)\n", vha->vp_idx, 5106 le16_to_cpu(iocb->u.isp2x.seq_id), 5107 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5108 le16_to_cpu(iocb->u.isp2x.lun)); 5109 if (qlt_abort_task(vha, iocb) == 0) 5110 send_notify_ack = 0; 5111 break; 5112 5113 case IMM_NTFY_RESOURCE: 5114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5115 "qla_target(%d): Out of resources, host %ld\n", 5116 vha->vp_idx, vha->host_no); 5117 break; 5118 5119 case IMM_NTFY_MSG_RX: 5120 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5121 "qla_target(%d): Immediate notify task %x\n", 5122 vha->vp_idx, iocb->u.isp2x.task_flags); 5123 if (qlt_handle_task_mgmt(vha, iocb) == 0) 5124 send_notify_ack = 0; 5125 break; 5126 5127 case IMM_NTFY_ELS: 5128 if (qlt_24xx_handle_els(vha, iocb) == 0) 5129 send_notify_ack = 0; 5130 break; 5131 default: 5132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5133 "qla_target(%d): Received unknown immediate " 5134 "notify status %x\n", vha->vp_idx, status); 5135 break; 5136 } 5137 5138 if (send_notify_ack) 5139 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5140 0, 0); 5141 } 5142 5143 /* 5144 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5145 * This function sends busy to ISP 2xxx or 24xx. 5146 */ 5147 static int __qlt_send_busy(struct qla_qpair *qpair, 5148 struct atio_from_isp *atio, uint16_t status) 5149 { 5150 struct scsi_qla_host *vha = qpair->vha; 5151 struct ctio7_to_24xx *ctio24; 5152 struct qla_hw_data *ha = vha->hw; 5153 request_t *pkt; 5154 struct fc_port *sess = NULL; 5155 unsigned long flags; 5156 u16 temp; 5157 5158 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5159 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5160 atio->u.isp24.fcp_hdr.s_id); 5161 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5162 if (!sess) { 5163 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5164 return 0; 5165 } 5166 /* Sending marker isn't necessary, since we called from ISR */ 5167 5168 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5169 if (!pkt) { 5170 ql_dbg(ql_dbg_io, vha, 0x3063, 5171 "qla_target(%d): %s failed: unable to allocate " 5172 "request packet", vha->vp_idx, __func__); 5173 return -ENOMEM; 5174 } 5175 5176 qpair->tgt_counters.num_q_full_sent++; 5177 pkt->entry_count = 1; 5178 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5179 5180 ctio24 = (struct ctio7_to_24xx *)pkt; 5181 ctio24->entry_type = CTIO_TYPE7; 5182 ctio24->nport_handle = sess->loop_id; 5183 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5184 ctio24->vp_index = vha->vp_idx; 5185 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5186 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5187 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5188 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5189 temp = (atio->u.isp24.attr << 9) | 5190 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5191 CTIO7_FLAGS_DONT_RET_CTIO; 5192 ctio24->u.status1.flags = cpu_to_le16(temp); 5193 /* 5194 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5195 * if the explicit conformation is used. 5196 */ 5197 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5198 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5199 /* Memory Barrier */ 5200 wmb(); 5201 if (qpair->reqq_start_iocbs) 5202 qpair->reqq_start_iocbs(qpair); 5203 else 5204 qla2x00_start_iocbs(vha, qpair->req); 5205 return 0; 5206 } 5207 5208 /* 5209 * This routine is used to allocate a command for either a QFull condition 5210 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5211 * out previously. 5212 */ 5213 static void 5214 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5215 struct atio_from_isp *atio, uint16_t status, int qfull) 5216 { 5217 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5218 struct qla_hw_data *ha = vha->hw; 5219 struct fc_port *sess; 5220 struct se_session *se_sess; 5221 struct qla_tgt_cmd *cmd; 5222 int tag; 5223 unsigned long flags; 5224 5225 if (unlikely(tgt->tgt_stop)) { 5226 ql_dbg(ql_dbg_io, vha, 0x300a, 5227 "New command while device %p is shutting down\n", tgt); 5228 return; 5229 } 5230 5231 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5232 vha->hw->tgt.num_qfull_cmds_dropped++; 5233 if (vha->hw->tgt.num_qfull_cmds_dropped > 5234 vha->qla_stats.stat_max_qfull_cmds_dropped) 5235 vha->qla_stats.stat_max_qfull_cmds_dropped = 5236 vha->hw->tgt.num_qfull_cmds_dropped; 5237 5238 ql_dbg(ql_dbg_io, vha, 0x3068, 5239 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5240 vha->vp_idx, __func__, 5241 vha->hw->tgt.num_qfull_cmds_dropped); 5242 5243 qlt_chk_exch_leak_thresh_hold(vha); 5244 return; 5245 } 5246 5247 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5248 (vha, atio->u.isp24.fcp_hdr.s_id); 5249 if (!sess) 5250 return; 5251 5252 se_sess = sess->se_sess; 5253 5254 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 5255 if (tag < 0) 5256 return; 5257 5258 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5259 if (!cmd) { 5260 ql_dbg(ql_dbg_io, vha, 0x3009, 5261 "qla_target(%d): %s: Allocation of cmd failed\n", 5262 vha->vp_idx, __func__); 5263 5264 vha->hw->tgt.num_qfull_cmds_dropped++; 5265 if (vha->hw->tgt.num_qfull_cmds_dropped > 5266 vha->qla_stats.stat_max_qfull_cmds_dropped) 5267 vha->qla_stats.stat_max_qfull_cmds_dropped = 5268 vha->hw->tgt.num_qfull_cmds_dropped; 5269 5270 qlt_chk_exch_leak_thresh_hold(vha); 5271 return; 5272 } 5273 5274 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5275 5276 qlt_incr_num_pend_cmds(vha); 5277 INIT_LIST_HEAD(&cmd->cmd_list); 5278 memcpy(&cmd->atio, atio, sizeof(*atio)); 5279 5280 cmd->tgt = vha->vha_tgt.qla_tgt; 5281 cmd->vha = vha; 5282 cmd->reset_count = ha->base_qpair->chip_reset; 5283 cmd->q_full = 1; 5284 cmd->qpair = ha->base_qpair; 5285 5286 if (qfull) { 5287 cmd->q_full = 1; 5288 /* NOTE: borrowing the state field to carry the status */ 5289 cmd->state = status; 5290 } else 5291 cmd->term_exchg = 1; 5292 5293 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5294 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5295 5296 vha->hw->tgt.num_qfull_cmds_alloc++; 5297 if (vha->hw->tgt.num_qfull_cmds_alloc > 5298 vha->qla_stats.stat_max_qfull_cmds_alloc) 5299 vha->qla_stats.stat_max_qfull_cmds_alloc = 5300 vha->hw->tgt.num_qfull_cmds_alloc; 5301 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5302 } 5303 5304 int 5305 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5306 { 5307 struct scsi_qla_host *vha = qpair->vha; 5308 struct qla_hw_data *ha = vha->hw; 5309 unsigned long flags; 5310 struct qla_tgt_cmd *cmd, *tcmd; 5311 struct list_head free_list, q_full_list; 5312 int rc = 0; 5313 5314 if (list_empty(&ha->tgt.q_full_list)) 5315 return 0; 5316 5317 INIT_LIST_HEAD(&free_list); 5318 INIT_LIST_HEAD(&q_full_list); 5319 5320 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5321 if (list_empty(&ha->tgt.q_full_list)) { 5322 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5323 return 0; 5324 } 5325 5326 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5327 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5328 5329 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5330 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5331 if (cmd->q_full) 5332 /* cmd->state is a borrowed field to hold status */ 5333 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5334 else if (cmd->term_exchg) 5335 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5336 5337 if (rc == -ENOMEM) 5338 break; 5339 5340 if (cmd->q_full) 5341 ql_dbg(ql_dbg_io, vha, 0x3006, 5342 "%s: busy sent for ox_id[%04x]\n", __func__, 5343 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5344 else if (cmd->term_exchg) 5345 ql_dbg(ql_dbg_io, vha, 0x3007, 5346 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5347 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5348 else 5349 ql_dbg(ql_dbg_io, vha, 0x3008, 5350 "%s: Unexpected cmd in QFull list %p\n", __func__, 5351 cmd); 5352 5353 list_del(&cmd->cmd_list); 5354 list_add_tail(&cmd->cmd_list, &free_list); 5355 5356 /* piggy back on hardware_lock for protection */ 5357 vha->hw->tgt.num_qfull_cmds_alloc--; 5358 } 5359 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5360 5361 cmd = NULL; 5362 5363 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5364 list_del(&cmd->cmd_list); 5365 /* This cmd was never sent to TCM. There is no need 5366 * to schedule free or call free_cmd 5367 */ 5368 qlt_free_cmd(cmd); 5369 } 5370 5371 if (!list_empty(&q_full_list)) { 5372 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5373 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5374 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5375 } 5376 5377 return rc; 5378 } 5379 5380 static void 5381 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5382 uint16_t status) 5383 { 5384 int rc = 0; 5385 struct scsi_qla_host *vha = qpair->vha; 5386 5387 rc = __qlt_send_busy(qpair, atio, status); 5388 if (rc == -ENOMEM) 5389 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5390 } 5391 5392 static int 5393 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5394 struct atio_from_isp *atio, uint8_t ha_locked) 5395 { 5396 struct qla_hw_data *ha = vha->hw; 5397 unsigned long flags; 5398 5399 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5400 return 0; 5401 5402 if (!ha_locked) 5403 spin_lock_irqsave(&ha->hardware_lock, flags); 5404 qlt_send_busy(qpair, atio, qla_sam_status); 5405 if (!ha_locked) 5406 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5407 5408 return 1; 5409 } 5410 5411 /* ha->hardware_lock supposed to be held on entry */ 5412 /* called via callback from qla2xxx */ 5413 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5414 struct atio_from_isp *atio, uint8_t ha_locked) 5415 { 5416 struct qla_hw_data *ha = vha->hw; 5417 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5418 int rc; 5419 unsigned long flags = 0; 5420 5421 if (unlikely(tgt == NULL)) { 5422 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5423 "ATIO pkt, but no tgt (ha %p)", ha); 5424 return; 5425 } 5426 /* 5427 * In tgt_stop mode we also should allow all requests to pass. 5428 * Otherwise, some commands can stuck. 5429 */ 5430 5431 tgt->atio_irq_cmd_count++; 5432 5433 switch (atio->u.raw.entry_type) { 5434 case ATIO_TYPE7: 5435 if (unlikely(atio->u.isp24.exchange_addr == 5436 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5437 ql_dbg(ql_dbg_io, vha, 0x3065, 5438 "qla_target(%d): ATIO_TYPE7 " 5439 "received with UNKNOWN exchange address, " 5440 "sending QUEUE_FULL\n", vha->vp_idx); 5441 if (!ha_locked) 5442 spin_lock_irqsave(&ha->hardware_lock, flags); 5443 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5444 if (!ha_locked) 5445 spin_unlock_irqrestore(&ha->hardware_lock, 5446 flags); 5447 break; 5448 } 5449 5450 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5451 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5452 atio, ha_locked); 5453 if (rc != 0) { 5454 tgt->atio_irq_cmd_count--; 5455 return; 5456 } 5457 rc = qlt_handle_cmd_for_atio(vha, atio); 5458 } else { 5459 rc = qlt_handle_task_mgmt(vha, atio); 5460 } 5461 if (unlikely(rc != 0)) { 5462 if (!ha_locked) 5463 spin_lock_irqsave(&ha->hardware_lock, flags); 5464 switch (rc) { 5465 case -ENODEV: 5466 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5467 "qla_target: Unable to send command to target\n"); 5468 break; 5469 case -EBADF: 5470 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5471 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5472 qlt_send_term_exchange(ha->base_qpair, NULL, 5473 atio, 1, 0); 5474 break; 5475 case -EBUSY: 5476 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5477 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5478 vha->vp_idx); 5479 qlt_send_busy(ha->base_qpair, atio, 5480 tc_sam_status); 5481 break; 5482 default: 5483 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5484 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5485 vha->vp_idx); 5486 qlt_send_busy(ha->base_qpair, atio, 5487 qla_sam_status); 5488 break; 5489 } 5490 if (!ha_locked) 5491 spin_unlock_irqrestore(&ha->hardware_lock, 5492 flags); 5493 } 5494 break; 5495 5496 case IMMED_NOTIFY_TYPE: 5497 { 5498 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5499 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5500 "qla_target(%d): Received ATIO packet %x " 5501 "with error status %x\n", vha->vp_idx, 5502 atio->u.raw.entry_type, 5503 atio->u.isp2x.entry_status); 5504 break; 5505 } 5506 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5507 5508 if (!ha_locked) 5509 spin_lock_irqsave(&ha->hardware_lock, flags); 5510 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5511 if (!ha_locked) 5512 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5513 break; 5514 } 5515 5516 default: 5517 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5518 "qla_target(%d): Received unknown ATIO atio " 5519 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5520 break; 5521 } 5522 5523 tgt->atio_irq_cmd_count--; 5524 } 5525 5526 /* ha->hardware_lock supposed to be held on entry */ 5527 /* called via callback from qla2xxx */ 5528 static void qlt_response_pkt(struct scsi_qla_host *vha, 5529 struct rsp_que *rsp, response_t *pkt) 5530 { 5531 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5532 5533 if (unlikely(tgt == NULL)) { 5534 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5535 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5536 vha->vp_idx, pkt->entry_type, vha->hw); 5537 return; 5538 } 5539 5540 /* 5541 * In tgt_stop mode we also should allow all requests to pass. 5542 * Otherwise, some commands can stuck. 5543 */ 5544 5545 switch (pkt->entry_type) { 5546 case CTIO_CRC2: 5547 case CTIO_TYPE7: 5548 { 5549 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5550 qlt_do_ctio_completion(vha, rsp, entry->handle, 5551 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5552 entry); 5553 break; 5554 } 5555 5556 case ACCEPT_TGT_IO_TYPE: 5557 { 5558 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5559 int rc; 5560 if (atio->u.isp2x.status != 5561 cpu_to_le16(ATIO_CDB_VALID)) { 5562 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5563 "qla_target(%d): ATIO with error " 5564 "status %x received\n", vha->vp_idx, 5565 le16_to_cpu(atio->u.isp2x.status)); 5566 break; 5567 } 5568 5569 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5570 if (rc != 0) 5571 return; 5572 5573 rc = qlt_handle_cmd_for_atio(vha, atio); 5574 if (unlikely(rc != 0)) { 5575 switch (rc) { 5576 case -ENODEV: 5577 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5578 "qla_target: Unable to send command to target\n"); 5579 break; 5580 case -EBADF: 5581 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5582 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5583 qlt_send_term_exchange(rsp->qpair, NULL, 5584 atio, 1, 0); 5585 break; 5586 case -EBUSY: 5587 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5588 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5589 vha->vp_idx); 5590 qlt_send_busy(rsp->qpair, atio, 5591 tc_sam_status); 5592 break; 5593 default: 5594 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5595 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5596 vha->vp_idx); 5597 qlt_send_busy(rsp->qpair, atio, 5598 qla_sam_status); 5599 break; 5600 } 5601 } 5602 } 5603 break; 5604 5605 case CONTINUE_TGT_IO_TYPE: 5606 { 5607 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5608 qlt_do_ctio_completion(vha, rsp, entry->handle, 5609 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5610 entry); 5611 break; 5612 } 5613 5614 case CTIO_A64_TYPE: 5615 { 5616 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5617 qlt_do_ctio_completion(vha, rsp, entry->handle, 5618 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5619 entry); 5620 break; 5621 } 5622 5623 case IMMED_NOTIFY_TYPE: 5624 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5625 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5626 break; 5627 5628 case NOTIFY_ACK_TYPE: 5629 if (tgt->notify_ack_expected > 0) { 5630 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5631 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5632 "NOTIFY_ACK seq %08x status %x\n", 5633 le16_to_cpu(entry->u.isp2x.seq_id), 5634 le16_to_cpu(entry->u.isp2x.status)); 5635 tgt->notify_ack_expected--; 5636 if (entry->u.isp2x.status != 5637 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5638 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5639 "qla_target(%d): NOTIFY_ACK " 5640 "failed %x\n", vha->vp_idx, 5641 le16_to_cpu(entry->u.isp2x.status)); 5642 } 5643 } else { 5644 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5645 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5646 vha->vp_idx); 5647 } 5648 break; 5649 5650 case ABTS_RECV_24XX: 5651 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5652 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5653 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5654 break; 5655 5656 case ABTS_RESP_24XX: 5657 if (tgt->abts_resp_expected > 0) { 5658 struct abts_resp_from_24xx_fw *entry = 5659 (struct abts_resp_from_24xx_fw *)pkt; 5660 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5661 "ABTS_RESP_24XX: compl_status %x\n", 5662 entry->compl_status); 5663 tgt->abts_resp_expected--; 5664 if (le16_to_cpu(entry->compl_status) != 5665 ABTS_RESP_COMPL_SUCCESS) { 5666 if ((entry->error_subcode1 == 0x1E) && 5667 (entry->error_subcode2 == 0)) { 5668 /* 5669 * We've got a race here: aborted 5670 * exchange not terminated, i.e. 5671 * response for the aborted command was 5672 * sent between the abort request was 5673 * received and processed. 5674 * Unfortunately, the firmware has a 5675 * silly requirement that all aborted 5676 * exchanges must be explicitely 5677 * terminated, otherwise it refuses to 5678 * send responses for the abort 5679 * requests. So, we have to 5680 * (re)terminate the exchange and retry 5681 * the abort response. 5682 */ 5683 qlt_24xx_retry_term_exchange(vha, 5684 entry); 5685 } else 5686 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5687 "qla_target(%d): ABTS_RESP_24XX " 5688 "failed %x (subcode %x:%x)", 5689 vha->vp_idx, entry->compl_status, 5690 entry->error_subcode1, 5691 entry->error_subcode2); 5692 } 5693 } else { 5694 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5695 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5696 "received\n", vha->vp_idx); 5697 } 5698 break; 5699 5700 default: 5701 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5702 "qla_target(%d): Received unknown response pkt " 5703 "type %x\n", vha->vp_idx, pkt->entry_type); 5704 break; 5705 } 5706 5707 } 5708 5709 /* 5710 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5711 */ 5712 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5713 uint16_t *mailbox) 5714 { 5715 struct qla_hw_data *ha = vha->hw; 5716 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5717 int login_code; 5718 5719 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5720 return; 5721 5722 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5723 IS_QLA2100(ha)) 5724 return; 5725 /* 5726 * In tgt_stop mode we also should allow all requests to pass. 5727 * Otherwise, some commands can stuck. 5728 */ 5729 5730 5731 switch (code) { 5732 case MBA_RESET: /* Reset */ 5733 case MBA_SYSTEM_ERR: /* System Error */ 5734 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5735 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5736 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5737 "qla_target(%d): System error async event %#x " 5738 "occurred", vha->vp_idx, code); 5739 break; 5740 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5741 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5742 break; 5743 5744 case MBA_LOOP_UP: 5745 { 5746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5747 "qla_target(%d): Async LOOP_UP occurred " 5748 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5749 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5750 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5751 if (tgt->link_reinit_iocb_pending) { 5752 qlt_send_notify_ack(ha->base_qpair, 5753 (void *)&tgt->link_reinit_iocb, 5754 0, 0, 0, 0, 0, 0); 5755 tgt->link_reinit_iocb_pending = 0; 5756 } 5757 break; 5758 } 5759 5760 case MBA_LIP_OCCURRED: 5761 case MBA_LOOP_DOWN: 5762 case MBA_LIP_RESET: 5763 case MBA_RSCN_UPDATE: 5764 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5765 "qla_target(%d): Async event %#x occurred " 5766 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5767 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5768 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5769 break; 5770 5771 case MBA_REJECTED_FCP_CMD: 5772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5773 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5774 vha->vp_idx, 5775 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5776 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5777 5778 if (le16_to_cpu(mailbox[3]) == 1) { 5779 /* exchange starvation. */ 5780 vha->hw->exch_starvation++; 5781 if (vha->hw->exch_starvation > 5) { 5782 ql_log(ql_log_warn, vha, 0xd03a, 5783 "Exchange starvation-. Resetting RISC\n"); 5784 5785 vha->hw->exch_starvation = 0; 5786 if (IS_P3P_TYPE(vha->hw)) 5787 set_bit(FCOE_CTX_RESET_NEEDED, 5788 &vha->dpc_flags); 5789 else 5790 set_bit(ISP_ABORT_NEEDED, 5791 &vha->dpc_flags); 5792 qla2xxx_wake_dpc(vha); 5793 } 5794 } 5795 break; 5796 5797 case MBA_PORT_UPDATE: 5798 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5799 "qla_target(%d): Port update async event %#x " 5800 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5801 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5802 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5803 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5804 5805 login_code = le16_to_cpu(mailbox[2]); 5806 if (login_code == 0x4) { 5807 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5808 "Async MB 2: Got PLOGI Complete\n"); 5809 vha->hw->exch_starvation = 0; 5810 } else if (login_code == 0x7) 5811 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5812 "Async MB 2: Port Logged Out\n"); 5813 break; 5814 default: 5815 break; 5816 } 5817 5818 } 5819 5820 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5821 uint16_t loop_id) 5822 { 5823 fc_port_t *fcport, *tfcp, *del; 5824 int rc; 5825 unsigned long flags; 5826 u8 newfcport = 0; 5827 5828 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 5829 if (!fcport) { 5830 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5831 "qla_target(%d): Allocation of tmp FC port failed", 5832 vha->vp_idx); 5833 return NULL; 5834 } 5835 5836 fcport->loop_id = loop_id; 5837 5838 rc = qla24xx_gpdb_wait(vha, fcport, 0); 5839 if (rc != QLA_SUCCESS) { 5840 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5841 "qla_target(%d): Failed to retrieve fcport " 5842 "information -- get_port_database() returned %x " 5843 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5844 kfree(fcport); 5845 return NULL; 5846 } 5847 5848 del = NULL; 5849 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 5850 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 5851 5852 if (tfcp) { 5853 tfcp->d_id = fcport->d_id; 5854 tfcp->port_type = fcport->port_type; 5855 tfcp->supported_classes = fcport->supported_classes; 5856 tfcp->flags |= fcport->flags; 5857 tfcp->scan_state = QLA_FCPORT_FOUND; 5858 5859 del = fcport; 5860 fcport = tfcp; 5861 } else { 5862 if (vha->hw->current_topology == ISP_CFG_F) 5863 fcport->flags |= FCF_FABRIC_DEVICE; 5864 5865 list_add_tail(&fcport->list, &vha->vp_fcports); 5866 if (!IS_SW_RESV_ADDR(fcport->d_id)) 5867 vha->fcport_count++; 5868 fcport->login_gen++; 5869 fcport->disc_state = DSC_LOGIN_COMPLETE; 5870 fcport->login_succ = 1; 5871 newfcport = 1; 5872 } 5873 5874 fcport->deleted = 0; 5875 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 5876 5877 switch (vha->host->active_mode) { 5878 case MODE_INITIATOR: 5879 case MODE_DUAL: 5880 if (newfcport) { 5881 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 5882 ql_dbg(ql_dbg_disc, vha, 0x20fe, 5883 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 5884 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5885 qla24xx_post_upd_fcport_work(vha, fcport); 5886 } else { 5887 ql_dbg(ql_dbg_disc, vha, 0x20ff, 5888 "%s %d %8phC post gpsc fcp_cnt %d\n", 5889 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5890 qla24xx_post_gpsc_work(vha, fcport); 5891 } 5892 } 5893 break; 5894 5895 case MODE_TARGET: 5896 default: 5897 break; 5898 } 5899 if (del) 5900 qla2x00_free_fcport(del); 5901 5902 return fcport; 5903 } 5904 5905 /* Must be called under tgt_mutex */ 5906 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 5907 uint8_t *s_id) 5908 { 5909 struct fc_port *sess = NULL; 5910 fc_port_t *fcport = NULL; 5911 int rc, global_resets; 5912 uint16_t loop_id = 0; 5913 5914 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 5915 /* 5916 * This is Domain Controller, so it should be 5917 * OK to drop SCSI commands from it. 5918 */ 5919 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5920 "Unable to find initiator with S_ID %x:%x:%x", 5921 s_id[0], s_id[1], s_id[2]); 5922 return NULL; 5923 } 5924 5925 mutex_lock(&vha->vha_tgt.tgt_mutex); 5926 5927 retry: 5928 global_resets = 5929 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 5930 5931 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 5932 if (rc != 0) { 5933 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5934 5935 ql_log(ql_log_info, vha, 0xf071, 5936 "qla_target(%d): Unable to find " 5937 "initiator with S_ID %x:%x:%x", 5938 vha->vp_idx, s_id[0], s_id[1], 5939 s_id[2]); 5940 5941 if (rc == -ENOENT) { 5942 qlt_port_logo_t logo; 5943 sid_to_portid(s_id, &logo.id); 5944 logo.cmd_count = 1; 5945 qlt_send_first_logo(vha, &logo); 5946 } 5947 5948 return NULL; 5949 } 5950 5951 fcport = qlt_get_port_database(vha, loop_id); 5952 if (!fcport) { 5953 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5954 return NULL; 5955 } 5956 5957 if (global_resets != 5958 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 5959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 5960 "qla_target(%d): global reset during session discovery " 5961 "(counter was %d, new %d), retrying", vha->vp_idx, 5962 global_resets, 5963 atomic_read(&vha->vha_tgt. 5964 qla_tgt->tgt_global_resets_count)); 5965 goto retry; 5966 } 5967 5968 sess = qlt_create_sess(vha, fcport, true); 5969 5970 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5971 5972 return sess; 5973 } 5974 5975 static void qlt_abort_work(struct qla_tgt *tgt, 5976 struct qla_tgt_sess_work_param *prm) 5977 { 5978 struct scsi_qla_host *vha = tgt->vha; 5979 struct qla_hw_data *ha = vha->hw; 5980 struct fc_port *sess = NULL; 5981 unsigned long flags = 0, flags2 = 0; 5982 uint32_t be_s_id; 5983 uint8_t s_id[3]; 5984 int rc; 5985 5986 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5987 5988 if (tgt->tgt_stop) 5989 goto out_term2; 5990 5991 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 5992 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 5993 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 5994 5995 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5996 (unsigned char *)&be_s_id); 5997 if (!sess) { 5998 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5999 6000 sess = qlt_make_local_sess(vha, s_id); 6001 /* sess has got an extra creation ref */ 6002 6003 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6004 if (!sess) 6005 goto out_term2; 6006 } else { 6007 if (sess->deleted) { 6008 sess = NULL; 6009 goto out_term2; 6010 } 6011 6012 if (!kref_get_unless_zero(&sess->sess_kref)) { 6013 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6014 "%s: kref_get fail %8phC \n", 6015 __func__, sess->port_name); 6016 sess = NULL; 6017 goto out_term2; 6018 } 6019 } 6020 6021 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6022 ha->tgt.tgt_ops->put_sess(sess); 6023 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6024 6025 if (rc != 0) 6026 goto out_term; 6027 return; 6028 6029 out_term2: 6030 if (sess) 6031 ha->tgt.tgt_ops->put_sess(sess); 6032 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6033 6034 out_term: 6035 spin_lock_irqsave(&ha->hardware_lock, flags); 6036 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6037 FCP_TMF_REJECTED, false); 6038 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6039 } 6040 6041 static void qlt_tmr_work(struct qla_tgt *tgt, 6042 struct qla_tgt_sess_work_param *prm) 6043 { 6044 struct atio_from_isp *a = &prm->tm_iocb2; 6045 struct scsi_qla_host *vha = tgt->vha; 6046 struct qla_hw_data *ha = vha->hw; 6047 struct fc_port *sess = NULL; 6048 unsigned long flags; 6049 uint8_t *s_id = NULL; /* to hide compiler warnings */ 6050 int rc; 6051 u64 unpacked_lun; 6052 int fn; 6053 void *iocb; 6054 6055 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6056 6057 if (tgt->tgt_stop) 6058 goto out_term2; 6059 6060 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6061 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6062 if (!sess) { 6063 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6064 6065 sess = qlt_make_local_sess(vha, s_id); 6066 /* sess has got an extra creation ref */ 6067 6068 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6069 if (!sess) 6070 goto out_term2; 6071 } else { 6072 if (sess->deleted) { 6073 sess = NULL; 6074 goto out_term2; 6075 } 6076 6077 if (!kref_get_unless_zero(&sess->sess_kref)) { 6078 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6079 "%s: kref_get fail %8phC\n", 6080 __func__, sess->port_name); 6081 sess = NULL; 6082 goto out_term2; 6083 } 6084 } 6085 6086 iocb = a; 6087 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6088 unpacked_lun = 6089 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6090 6091 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6092 ha->tgt.tgt_ops->put_sess(sess); 6093 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6094 6095 if (rc != 0) 6096 goto out_term; 6097 return; 6098 6099 out_term2: 6100 if (sess) 6101 ha->tgt.tgt_ops->put_sess(sess); 6102 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6103 out_term: 6104 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6105 } 6106 6107 static void qlt_sess_work_fn(struct work_struct *work) 6108 { 6109 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6110 struct scsi_qla_host *vha = tgt->vha; 6111 unsigned long flags; 6112 6113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6114 6115 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6116 while (!list_empty(&tgt->sess_works_list)) { 6117 struct qla_tgt_sess_work_param *prm = list_entry( 6118 tgt->sess_works_list.next, typeof(*prm), 6119 sess_works_list_entry); 6120 6121 /* 6122 * This work can be scheduled on several CPUs at time, so we 6123 * must delete the entry to eliminate double processing 6124 */ 6125 list_del(&prm->sess_works_list_entry); 6126 6127 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6128 6129 switch (prm->type) { 6130 case QLA_TGT_SESS_WORK_ABORT: 6131 qlt_abort_work(tgt, prm); 6132 break; 6133 case QLA_TGT_SESS_WORK_TM: 6134 qlt_tmr_work(tgt, prm); 6135 break; 6136 default: 6137 BUG_ON(1); 6138 break; 6139 } 6140 6141 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6142 6143 kfree(prm); 6144 } 6145 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6146 } 6147 6148 /* Must be called under tgt_host_action_mutex */ 6149 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6150 { 6151 struct qla_tgt *tgt; 6152 int rc, i; 6153 struct qla_qpair_hint *h; 6154 6155 if (!QLA_TGT_MODE_ENABLED()) 6156 return 0; 6157 6158 if (!IS_TGT_MODE_CAPABLE(ha)) { 6159 ql_log(ql_log_warn, base_vha, 0xe070, 6160 "This adapter does not support target mode.\n"); 6161 return 0; 6162 } 6163 6164 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6165 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6166 6167 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6168 6169 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6170 if (!tgt) { 6171 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6172 "Unable to allocate struct qla_tgt\n"); 6173 return -ENOMEM; 6174 } 6175 6176 tgt->qphints = kzalloc((ha->max_qpairs + 1) * 6177 sizeof(struct qla_qpair_hint), GFP_KERNEL); 6178 if (!tgt->qphints) { 6179 kfree(tgt); 6180 ql_log(ql_log_warn, base_vha, 0x0197, 6181 "Unable to allocate qpair hints.\n"); 6182 return -ENOMEM; 6183 } 6184 6185 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6186 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6187 6188 rc = btree_init64(&tgt->lun_qpair_map); 6189 if (rc) { 6190 kfree(tgt->qphints); 6191 kfree(tgt); 6192 ql_log(ql_log_info, base_vha, 0x0198, 6193 "Unable to initialize lun_qpair_map btree\n"); 6194 return -EIO; 6195 } 6196 h = &tgt->qphints[0]; 6197 h->qpair = ha->base_qpair; 6198 INIT_LIST_HEAD(&h->hint_elem); 6199 h->cpuid = ha->base_qpair->cpuid; 6200 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6201 6202 for (i = 0; i < ha->max_qpairs; i++) { 6203 unsigned long flags; 6204 6205 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6206 h = &tgt->qphints[i + 1]; 6207 INIT_LIST_HEAD(&h->hint_elem); 6208 if (qpair) { 6209 h->qpair = qpair; 6210 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6211 list_add_tail(&h->hint_elem, &qpair->hints_list); 6212 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6213 h->cpuid = qpair->cpuid; 6214 } 6215 } 6216 6217 tgt->ha = ha; 6218 tgt->vha = base_vha; 6219 init_waitqueue_head(&tgt->waitQ); 6220 INIT_LIST_HEAD(&tgt->del_sess_list); 6221 spin_lock_init(&tgt->sess_work_lock); 6222 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6223 INIT_LIST_HEAD(&tgt->sess_works_list); 6224 atomic_set(&tgt->tgt_global_resets_count, 0); 6225 6226 base_vha->vha_tgt.qla_tgt = tgt; 6227 6228 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6229 "qla_target(%d): using 64 Bit PCI addressing", 6230 base_vha->vp_idx); 6231 /* 3 is reserved */ 6232 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6233 6234 mutex_lock(&qla_tgt_mutex); 6235 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6236 mutex_unlock(&qla_tgt_mutex); 6237 6238 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6239 ha->tgt.tgt_ops->add_target(base_vha); 6240 6241 return 0; 6242 } 6243 6244 /* Must be called under tgt_host_action_mutex */ 6245 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6246 { 6247 if (!vha->vha_tgt.qla_tgt) 6248 return 0; 6249 6250 if (vha->fc_vport) { 6251 qlt_release(vha->vha_tgt.qla_tgt); 6252 return 0; 6253 } 6254 6255 /* free left over qfull cmds */ 6256 qlt_init_term_exchange(vha); 6257 6258 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6259 vha->host_no, ha); 6260 qlt_release(vha->vha_tgt.qla_tgt); 6261 6262 return 0; 6263 } 6264 6265 void qlt_remove_target_resources(struct qla_hw_data *ha) 6266 { 6267 struct scsi_qla_host *node; 6268 u32 key = 0; 6269 6270 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6271 btree_remove32(&ha->tgt.host_map, key); 6272 6273 btree_destroy32(&ha->tgt.host_map); 6274 } 6275 6276 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6277 unsigned char *b) 6278 { 6279 int i; 6280 6281 pr_debug("qla2xxx HW vha->node_name: "); 6282 for (i = 0; i < WWN_SIZE; i++) 6283 pr_debug("%02x ", vha->node_name[i]); 6284 pr_debug("\n"); 6285 pr_debug("qla2xxx HW vha->port_name: "); 6286 for (i = 0; i < WWN_SIZE; i++) 6287 pr_debug("%02x ", vha->port_name[i]); 6288 pr_debug("\n"); 6289 6290 pr_debug("qla2xxx passed configfs WWPN: "); 6291 put_unaligned_be64(wwpn, b); 6292 for (i = 0; i < WWN_SIZE; i++) 6293 pr_debug("%02x ", b[i]); 6294 pr_debug("\n"); 6295 } 6296 6297 /** 6298 * qla_tgt_lport_register - register lport with external module 6299 * 6300 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops 6301 * @wwpn: Passwd FC target WWPN 6302 * @callback: lport initialization callback for tcm_qla2xxx code 6303 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6304 */ 6305 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6306 u64 npiv_wwpn, u64 npiv_wwnn, 6307 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6308 { 6309 struct qla_tgt *tgt; 6310 struct scsi_qla_host *vha; 6311 struct qla_hw_data *ha; 6312 struct Scsi_Host *host; 6313 unsigned long flags; 6314 int rc; 6315 u8 b[WWN_SIZE]; 6316 6317 mutex_lock(&qla_tgt_mutex); 6318 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6319 vha = tgt->vha; 6320 ha = vha->hw; 6321 6322 host = vha->host; 6323 if (!host) 6324 continue; 6325 6326 if (!(host->hostt->supported_mode & MODE_TARGET)) 6327 continue; 6328 6329 spin_lock_irqsave(&ha->hardware_lock, flags); 6330 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6331 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6332 host->host_no); 6333 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6334 continue; 6335 } 6336 if (tgt->tgt_stop) { 6337 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6338 host->host_no); 6339 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6340 continue; 6341 } 6342 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6343 6344 if (!scsi_host_get(host)) { 6345 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6346 "Unable to scsi_host_get() for" 6347 " qla2xxx scsi_host\n"); 6348 continue; 6349 } 6350 qlt_lport_dump(vha, phys_wwpn, b); 6351 6352 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6353 scsi_host_put(host); 6354 continue; 6355 } 6356 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6357 if (rc != 0) 6358 scsi_host_put(host); 6359 6360 mutex_unlock(&qla_tgt_mutex); 6361 return rc; 6362 } 6363 mutex_unlock(&qla_tgt_mutex); 6364 6365 return -ENODEV; 6366 } 6367 EXPORT_SYMBOL(qlt_lport_register); 6368 6369 /** 6370 * qla_tgt_lport_deregister - Degister lport 6371 * 6372 * @vha: Registered scsi_qla_host pointer 6373 */ 6374 void qlt_lport_deregister(struct scsi_qla_host *vha) 6375 { 6376 struct qla_hw_data *ha = vha->hw; 6377 struct Scsi_Host *sh = vha->host; 6378 /* 6379 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6380 */ 6381 vha->vha_tgt.target_lport_ptr = NULL; 6382 ha->tgt.tgt_ops = NULL; 6383 /* 6384 * Release the Scsi_Host reference for the underlying qla2xxx host 6385 */ 6386 scsi_host_put(sh); 6387 } 6388 EXPORT_SYMBOL(qlt_lport_deregister); 6389 6390 /* Must be called under HW lock */ 6391 static void qlt_set_mode(struct scsi_qla_host *vha) 6392 { 6393 switch (ql2x_ini_mode) { 6394 case QLA2XXX_INI_MODE_DISABLED: 6395 case QLA2XXX_INI_MODE_EXCLUSIVE: 6396 vha->host->active_mode = MODE_TARGET; 6397 break; 6398 case QLA2XXX_INI_MODE_ENABLED: 6399 vha->host->active_mode = MODE_UNKNOWN; 6400 break; 6401 case QLA2XXX_INI_MODE_DUAL: 6402 vha->host->active_mode = MODE_DUAL; 6403 break; 6404 default: 6405 break; 6406 } 6407 } 6408 6409 /* Must be called under HW lock */ 6410 static void qlt_clear_mode(struct scsi_qla_host *vha) 6411 { 6412 switch (ql2x_ini_mode) { 6413 case QLA2XXX_INI_MODE_DISABLED: 6414 vha->host->active_mode = MODE_UNKNOWN; 6415 break; 6416 case QLA2XXX_INI_MODE_EXCLUSIVE: 6417 vha->host->active_mode = MODE_INITIATOR; 6418 break; 6419 case QLA2XXX_INI_MODE_ENABLED: 6420 case QLA2XXX_INI_MODE_DUAL: 6421 vha->host->active_mode = MODE_INITIATOR; 6422 break; 6423 default: 6424 break; 6425 } 6426 } 6427 6428 /* 6429 * qla_tgt_enable_vha - NO LOCK HELD 6430 * 6431 * host_reset, bring up w/ Target Mode Enabled 6432 */ 6433 void 6434 qlt_enable_vha(struct scsi_qla_host *vha) 6435 { 6436 struct qla_hw_data *ha = vha->hw; 6437 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6438 unsigned long flags; 6439 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6440 6441 if (!tgt) { 6442 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6443 "Unable to locate qla_tgt pointer from" 6444 " struct qla_hw_data\n"); 6445 dump_stack(); 6446 return; 6447 } 6448 6449 spin_lock_irqsave(&ha->hardware_lock, flags); 6450 tgt->tgt_stopped = 0; 6451 qlt_set_mode(vha); 6452 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6453 6454 if (vha->vp_idx) { 6455 qla24xx_disable_vp(vha); 6456 qla24xx_enable_vp(vha); 6457 } else { 6458 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6459 qla2xxx_wake_dpc(base_vha); 6460 qla2x00_wait_for_hba_online(base_vha); 6461 } 6462 } 6463 EXPORT_SYMBOL(qlt_enable_vha); 6464 6465 /* 6466 * qla_tgt_disable_vha - NO LOCK HELD 6467 * 6468 * Disable Target Mode and reset the adapter 6469 */ 6470 static void qlt_disable_vha(struct scsi_qla_host *vha) 6471 { 6472 struct qla_hw_data *ha = vha->hw; 6473 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6474 unsigned long flags; 6475 6476 if (!tgt) { 6477 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6478 "Unable to locate qla_tgt pointer from" 6479 " struct qla_hw_data\n"); 6480 dump_stack(); 6481 return; 6482 } 6483 6484 spin_lock_irqsave(&ha->hardware_lock, flags); 6485 qlt_clear_mode(vha); 6486 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6487 6488 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6489 qla2xxx_wake_dpc(vha); 6490 qla2x00_wait_for_hba_online(vha); 6491 } 6492 6493 /* 6494 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6495 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6496 * members. 6497 */ 6498 void 6499 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6500 { 6501 vha->vha_tgt.qla_tgt = NULL; 6502 6503 mutex_init(&vha->vha_tgt.tgt_mutex); 6504 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6505 6506 qlt_clear_mode(vha); 6507 6508 /* 6509 * NOTE: Currently the value is kept the same for <24xx and 6510 * >=24xx ISPs. If it is necessary to change it, 6511 * the check should be added for specific ISPs, 6512 * assigning the value appropriately. 6513 */ 6514 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6515 6516 qlt_add_target(ha, vha); 6517 } 6518 6519 u8 6520 qlt_rff_id(struct scsi_qla_host *vha) 6521 { 6522 u8 fc4_feature = 0; 6523 /* 6524 * FC-4 Feature bit 0 indicates target functionality to the name server. 6525 */ 6526 if (qla_tgt_mode_enabled(vha)) { 6527 fc4_feature = BIT_0; 6528 } else if (qla_ini_mode_enabled(vha)) { 6529 fc4_feature = BIT_1; 6530 } else if (qla_dual_mode_enabled(vha)) 6531 fc4_feature = BIT_0 | BIT_1; 6532 6533 return fc4_feature; 6534 } 6535 6536 /* 6537 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6538 * @ha: HA context 6539 * 6540 * Beginning of ATIO ring has initialization control block already built 6541 * by nvram config routine. 6542 * 6543 * Returns 0 on success. 6544 */ 6545 void 6546 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6547 { 6548 struct qla_hw_data *ha = vha->hw; 6549 uint16_t cnt; 6550 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6551 6552 if (qla_ini_mode_enabled(vha)) 6553 return; 6554 6555 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6556 pkt->u.raw.signature = ATIO_PROCESSED; 6557 pkt++; 6558 } 6559 6560 } 6561 6562 /* 6563 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6564 * @ha: SCSI driver HA context 6565 */ 6566 void 6567 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6568 { 6569 struct qla_hw_data *ha = vha->hw; 6570 struct atio_from_isp *pkt; 6571 int cnt, i; 6572 6573 if (!ha->flags.fw_started) 6574 return; 6575 6576 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6577 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6578 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6579 cnt = pkt->u.raw.entry_count; 6580 6581 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6582 /* 6583 * This packet is corrupted. The header + payload 6584 * can not be trusted. There is no point in passing 6585 * it further up. 6586 */ 6587 ql_log(ql_log_warn, vha, 0xd03c, 6588 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6589 pkt->u.isp24.fcp_hdr.s_id, 6590 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6591 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6592 6593 adjust_corrupted_atio(pkt); 6594 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6595 ha_locked, 0); 6596 } else { 6597 qlt_24xx_atio_pkt_all_vps(vha, 6598 (struct atio_from_isp *)pkt, ha_locked); 6599 } 6600 6601 for (i = 0; i < cnt; i++) { 6602 ha->tgt.atio_ring_index++; 6603 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6604 ha->tgt.atio_ring_index = 0; 6605 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6606 } else 6607 ha->tgt.atio_ring_ptr++; 6608 6609 pkt->u.raw.signature = ATIO_PROCESSED; 6610 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6611 } 6612 wmb(); 6613 } 6614 6615 /* Adjust ring index */ 6616 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6617 } 6618 6619 void 6620 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6621 { 6622 struct qla_hw_data *ha = vha->hw; 6623 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6624 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6625 6626 if (!QLA_TGT_MODE_ENABLED()) 6627 return; 6628 6629 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6630 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6631 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6632 6633 if (ha->flags.msix_enabled) { 6634 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6635 if (IS_QLA2071(ha)) { 6636 /* 4 ports Baker: Enable Interrupt Handshake */ 6637 icb->msix_atio = 0; 6638 icb->firmware_options_2 |= BIT_26; 6639 } else { 6640 icb->msix_atio = cpu_to_le16(msix->entry); 6641 icb->firmware_options_2 &= ~BIT_26; 6642 } 6643 ql_dbg(ql_dbg_init, vha, 0xf072, 6644 "Registering ICB vector 0x%x for atio que.\n", 6645 msix->entry); 6646 } 6647 } else { 6648 /* INTx|MSI */ 6649 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6650 icb->msix_atio = 0; 6651 icb->firmware_options_2 |= BIT_26; 6652 ql_dbg(ql_dbg_init, vha, 0xf072, 6653 "%s: Use INTx for ATIOQ.\n", __func__); 6654 } 6655 } 6656 } 6657 6658 void 6659 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6660 { 6661 struct qla_hw_data *ha = vha->hw; 6662 u32 tmp; 6663 6664 if (!QLA_TGT_MODE_ENABLED()) 6665 return; 6666 6667 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6668 if (!ha->tgt.saved_set) { 6669 /* We save only once */ 6670 ha->tgt.saved_exchange_count = nv->exchange_count; 6671 ha->tgt.saved_firmware_options_1 = 6672 nv->firmware_options_1; 6673 ha->tgt.saved_firmware_options_2 = 6674 nv->firmware_options_2; 6675 ha->tgt.saved_firmware_options_3 = 6676 nv->firmware_options_3; 6677 ha->tgt.saved_set = 1; 6678 } 6679 6680 if (qla_tgt_mode_enabled(vha)) 6681 nv->exchange_count = cpu_to_le16(0xFFFF); 6682 else /* dual */ 6683 nv->exchange_count = cpu_to_le16(ql2xexchoffld); 6684 6685 /* Enable target mode */ 6686 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6687 6688 /* Disable ini mode, if requested */ 6689 if (qla_tgt_mode_enabled(vha)) 6690 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6691 6692 /* Disable Full Login after LIP */ 6693 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6694 /* Enable initial LIP */ 6695 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6696 if (ql2xtgt_tape_enable) 6697 /* Enable FC Tape support */ 6698 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6699 else 6700 /* Disable FC Tape support */ 6701 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6702 6703 /* Disable Full Login after LIP */ 6704 nv->host_p &= cpu_to_le32(~BIT_10); 6705 6706 /* 6707 * clear BIT 15 explicitly as we have seen at least 6708 * a couple of instances where this was set and this 6709 * was causing the firmware to not be initialized. 6710 */ 6711 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6712 /* Enable target PRLI control */ 6713 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6714 6715 if (IS_QLA25XX(ha)) { 6716 /* Change Loop-prefer to Pt-Pt */ 6717 tmp = ~(BIT_4|BIT_5|BIT_6); 6718 nv->firmware_options_2 &= cpu_to_le32(tmp); 6719 tmp = P2P << 4; 6720 nv->firmware_options_2 |= cpu_to_le32(tmp); 6721 } 6722 } else { 6723 if (ha->tgt.saved_set) { 6724 nv->exchange_count = ha->tgt.saved_exchange_count; 6725 nv->firmware_options_1 = 6726 ha->tgt.saved_firmware_options_1; 6727 nv->firmware_options_2 = 6728 ha->tgt.saved_firmware_options_2; 6729 nv->firmware_options_3 = 6730 ha->tgt.saved_firmware_options_3; 6731 } 6732 return; 6733 } 6734 6735 if (ha->base_qpair->enable_class_2) { 6736 if (vha->flags.init_done) 6737 fc_host_supported_classes(vha->host) = 6738 FC_COS_CLASS2 | FC_COS_CLASS3; 6739 6740 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6741 } else { 6742 if (vha->flags.init_done) 6743 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6744 6745 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6746 } 6747 } 6748 6749 void 6750 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6751 struct init_cb_24xx *icb) 6752 { 6753 struct qla_hw_data *ha = vha->hw; 6754 6755 if (!QLA_TGT_MODE_ENABLED()) 6756 return; 6757 6758 if (ha->tgt.node_name_set) { 6759 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6760 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6761 } 6762 6763 /* disable ZIO at start time. */ 6764 if (!vha->flags.init_done) { 6765 uint32_t tmp; 6766 tmp = le32_to_cpu(icb->firmware_options_2); 6767 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6768 icb->firmware_options_2 = cpu_to_le32(tmp); 6769 } 6770 } 6771 6772 void 6773 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6774 { 6775 struct qla_hw_data *ha = vha->hw; 6776 u32 tmp; 6777 6778 if (!QLA_TGT_MODE_ENABLED()) 6779 return; 6780 6781 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6782 if (!ha->tgt.saved_set) { 6783 /* We save only once */ 6784 ha->tgt.saved_exchange_count = nv->exchange_count; 6785 ha->tgt.saved_firmware_options_1 = 6786 nv->firmware_options_1; 6787 ha->tgt.saved_firmware_options_2 = 6788 nv->firmware_options_2; 6789 ha->tgt.saved_firmware_options_3 = 6790 nv->firmware_options_3; 6791 ha->tgt.saved_set = 1; 6792 } 6793 6794 if (qla_tgt_mode_enabled(vha)) 6795 nv->exchange_count = cpu_to_le16(0xFFFF); 6796 else /* dual */ 6797 nv->exchange_count = cpu_to_le16(ql2xexchoffld); 6798 6799 /* Enable target mode */ 6800 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6801 6802 /* Disable ini mode, if requested */ 6803 if (qla_tgt_mode_enabled(vha)) 6804 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6805 /* Disable Full Login after LIP */ 6806 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6807 /* Enable initial LIP */ 6808 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6809 /* 6810 * clear BIT 15 explicitly as we have seen at 6811 * least a couple of instances where this was set 6812 * and this was causing the firmware to not be 6813 * initialized. 6814 */ 6815 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6816 if (ql2xtgt_tape_enable) 6817 /* Enable FC tape support */ 6818 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6819 else 6820 /* Disable FC tape support */ 6821 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6822 6823 /* Disable Full Login after LIP */ 6824 nv->host_p &= cpu_to_le32(~BIT_10); 6825 /* Enable target PRLI control */ 6826 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6827 6828 /* Change Loop-prefer to Pt-Pt */ 6829 tmp = ~(BIT_4|BIT_5|BIT_6); 6830 nv->firmware_options_2 &= cpu_to_le32(tmp); 6831 tmp = P2P << 4; 6832 nv->firmware_options_2 |= cpu_to_le32(tmp); 6833 } else { 6834 if (ha->tgt.saved_set) { 6835 nv->exchange_count = ha->tgt.saved_exchange_count; 6836 nv->firmware_options_1 = 6837 ha->tgt.saved_firmware_options_1; 6838 nv->firmware_options_2 = 6839 ha->tgt.saved_firmware_options_2; 6840 nv->firmware_options_3 = 6841 ha->tgt.saved_firmware_options_3; 6842 } 6843 return; 6844 } 6845 6846 if (ha->base_qpair->enable_class_2) { 6847 if (vha->flags.init_done) 6848 fc_host_supported_classes(vha->host) = 6849 FC_COS_CLASS2 | FC_COS_CLASS3; 6850 6851 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6852 } else { 6853 if (vha->flags.init_done) 6854 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6855 6856 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6857 } 6858 } 6859 6860 void 6861 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6862 struct init_cb_81xx *icb) 6863 { 6864 struct qla_hw_data *ha = vha->hw; 6865 6866 if (!QLA_TGT_MODE_ENABLED()) 6867 return; 6868 6869 if (ha->tgt.node_name_set) { 6870 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6871 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6872 } 6873 6874 /* disable ZIO at start time. */ 6875 if (!vha->flags.init_done) { 6876 uint32_t tmp; 6877 tmp = le32_to_cpu(icb->firmware_options_2); 6878 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6879 icb->firmware_options_2 = cpu_to_le32(tmp); 6880 } 6881 6882 } 6883 6884 void 6885 qlt_83xx_iospace_config(struct qla_hw_data *ha) 6886 { 6887 if (!QLA_TGT_MODE_ENABLED()) 6888 return; 6889 6890 ha->msix_count += 1; /* For ATIO Q */ 6891 } 6892 6893 6894 void 6895 qlt_modify_vp_config(struct scsi_qla_host *vha, 6896 struct vp_config_entry_24xx *vpmod) 6897 { 6898 /* enable target mode. Bit5 = 1 => disable */ 6899 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 6900 vpmod->options_idx1 &= ~BIT_5; 6901 6902 /* Disable ini mode, if requested. bit4 = 1 => disable */ 6903 if (qla_tgt_mode_enabled(vha)) 6904 vpmod->options_idx1 &= ~BIT_4; 6905 } 6906 6907 void 6908 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6909 { 6910 int rc; 6911 6912 if (!QLA_TGT_MODE_ENABLED()) 6913 return; 6914 6915 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6916 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6917 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6918 } else { 6919 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6920 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6921 } 6922 6923 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6924 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 6925 6926 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 6927 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 6928 qlt_unknown_atio_work_fn); 6929 6930 qlt_clear_mode(base_vha); 6931 6932 rc = btree_init32(&ha->tgt.host_map); 6933 if (rc) 6934 ql_log(ql_log_info, base_vha, 0xd03d, 6935 "Unable to initialize ha->host_map btree\n"); 6936 6937 qlt_update_vp_map(base_vha, SET_VP_IDX); 6938 } 6939 6940 irqreturn_t 6941 qla83xx_msix_atio_q(int irq, void *dev_id) 6942 { 6943 struct rsp_que *rsp; 6944 scsi_qla_host_t *vha; 6945 struct qla_hw_data *ha; 6946 unsigned long flags; 6947 6948 rsp = (struct rsp_que *) dev_id; 6949 ha = rsp->hw; 6950 vha = pci_get_drvdata(ha->pdev); 6951 6952 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6953 6954 qlt_24xx_process_atio_queue(vha, 0); 6955 6956 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6957 6958 return IRQ_HANDLED; 6959 } 6960 6961 static void 6962 qlt_handle_abts_recv_work(struct work_struct *work) 6963 { 6964 struct qla_tgt_sess_op *op = container_of(work, 6965 struct qla_tgt_sess_op, work); 6966 scsi_qla_host_t *vha = op->vha; 6967 struct qla_hw_data *ha = vha->hw; 6968 unsigned long flags; 6969 6970 if (qla2x00_reset_active(vha) || 6971 (op->chip_reset != ha->base_qpair->chip_reset)) 6972 return; 6973 6974 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6975 qlt_24xx_process_atio_queue(vha, 0); 6976 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6977 6978 spin_lock_irqsave(&ha->hardware_lock, flags); 6979 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 6980 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6981 6982 kfree(op); 6983 } 6984 6985 void 6986 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 6987 response_t *pkt) 6988 { 6989 struct qla_tgt_sess_op *op; 6990 6991 op = kzalloc(sizeof(*op), GFP_ATOMIC); 6992 6993 if (!op) { 6994 /* do not reach for ATIO queue here. This is best effort err 6995 * recovery at this point. 6996 */ 6997 qlt_response_pkt_all_vps(vha, rsp, pkt); 6998 return; 6999 } 7000 7001 memcpy(&op->atio, pkt, sizeof(*pkt)); 7002 op->vha = vha; 7003 op->chip_reset = vha->hw->base_qpair->chip_reset; 7004 op->rsp = rsp; 7005 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7006 queue_work(qla_tgt_wq, &op->work); 7007 return; 7008 } 7009 7010 int 7011 qlt_mem_alloc(struct qla_hw_data *ha) 7012 { 7013 if (!QLA_TGT_MODE_ENABLED()) 7014 return 0; 7015 7016 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * 7017 MAX_MULTI_ID_FABRIC, GFP_KERNEL); 7018 if (!ha->tgt.tgt_vp_map) 7019 return -ENOMEM; 7020 7021 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7022 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7023 &ha->tgt.atio_dma, GFP_KERNEL); 7024 if (!ha->tgt.atio_ring) { 7025 kfree(ha->tgt.tgt_vp_map); 7026 return -ENOMEM; 7027 } 7028 return 0; 7029 } 7030 7031 void 7032 qlt_mem_free(struct qla_hw_data *ha) 7033 { 7034 if (!QLA_TGT_MODE_ENABLED()) 7035 return; 7036 7037 if (ha->tgt.atio_ring) { 7038 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7039 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7040 ha->tgt.atio_dma); 7041 } 7042 kfree(ha->tgt.tgt_vp_map); 7043 } 7044 7045 /* vport_slock to be held by the caller */ 7046 void 7047 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7048 { 7049 void *slot; 7050 u32 key; 7051 int rc; 7052 7053 if (!QLA_TGT_MODE_ENABLED()) 7054 return; 7055 7056 key = vha->d_id.b24; 7057 7058 switch (cmd) { 7059 case SET_VP_IDX: 7060 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7061 break; 7062 case SET_AL_PA: 7063 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7064 if (!slot) { 7065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7066 "Save vha in host_map %p %06x\n", vha, key); 7067 rc = btree_insert32(&vha->hw->tgt.host_map, 7068 key, vha, GFP_ATOMIC); 7069 if (rc) 7070 ql_log(ql_log_info, vha, 0xd03e, 7071 "Unable to insert s_id into host_map: %06x\n", 7072 key); 7073 return; 7074 } 7075 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7076 "replace existing vha in host_map %p %06x\n", vha, key); 7077 btree_update32(&vha->hw->tgt.host_map, key, vha); 7078 break; 7079 case RESET_VP_IDX: 7080 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7081 break; 7082 case RESET_AL_PA: 7083 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7084 "clear vha in host_map %p %06x\n", vha, key); 7085 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7086 if (slot) 7087 btree_remove32(&vha->hw->tgt.host_map, key); 7088 vha->d_id.b24 = 0; 7089 break; 7090 } 7091 } 7092 7093 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7094 { 7095 7096 if (!vha->d_id.b24) { 7097 vha->d_id = id; 7098 qlt_update_vp_map(vha, SET_AL_PA); 7099 } else if (vha->d_id.b24 != id.b24) { 7100 qlt_update_vp_map(vha, RESET_AL_PA); 7101 vha->d_id = id; 7102 qlt_update_vp_map(vha, SET_AL_PA); 7103 } 7104 } 7105 7106 static int __init qlt_parse_ini_mode(void) 7107 { 7108 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7109 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7110 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7111 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7112 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7113 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7114 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7115 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7116 else 7117 return false; 7118 7119 return true; 7120 } 7121 7122 int __init qlt_init(void) 7123 { 7124 int ret; 7125 7126 if (!qlt_parse_ini_mode()) { 7127 ql_log(ql_log_fatal, NULL, 0xe06b, 7128 "qlt_parse_ini_mode() failed\n"); 7129 return -EINVAL; 7130 } 7131 7132 if (!QLA_TGT_MODE_ENABLED()) 7133 return 0; 7134 7135 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7136 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7137 qla_tgt_mgmt_cmd), 0, NULL); 7138 if (!qla_tgt_mgmt_cmd_cachep) { 7139 ql_log(ql_log_fatal, NULL, 0xd04b, 7140 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7141 return -ENOMEM; 7142 } 7143 7144 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7145 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7146 0, NULL); 7147 7148 if (!qla_tgt_plogi_cachep) { 7149 ql_log(ql_log_fatal, NULL, 0xe06d, 7150 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7151 ret = -ENOMEM; 7152 goto out_mgmt_cmd_cachep; 7153 } 7154 7155 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7156 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7157 if (!qla_tgt_mgmt_cmd_mempool) { 7158 ql_log(ql_log_fatal, NULL, 0xe06e, 7159 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7160 ret = -ENOMEM; 7161 goto out_plogi_cachep; 7162 } 7163 7164 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7165 if (!qla_tgt_wq) { 7166 ql_log(ql_log_fatal, NULL, 0xe06f, 7167 "alloc_workqueue for qla_tgt_wq failed\n"); 7168 ret = -ENOMEM; 7169 goto out_cmd_mempool; 7170 } 7171 /* 7172 * Return 1 to signal that initiator-mode is being disabled 7173 */ 7174 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7175 7176 out_cmd_mempool: 7177 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7178 out_plogi_cachep: 7179 kmem_cache_destroy(qla_tgt_plogi_cachep); 7180 out_mgmt_cmd_cachep: 7181 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7182 return ret; 7183 } 7184 7185 void qlt_exit(void) 7186 { 7187 if (!QLA_TGT_MODE_ENABLED()) 7188 return; 7189 7190 destroy_workqueue(qla_tgt_wq); 7191 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7192 kmem_cache_destroy(qla_tgt_plogi_cachep); 7193 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7194 } 7195