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 ql_dbg(ql_dbg_disc, vha, 0x20f3, 605 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 606 __func__, __LINE__, 607 sp->fcport->port_name, 608 vha->fcport_count); 609 sp->fcport->disc_state = DSC_UPD_FCPORT; 610 qla24xx_post_upd_fcport_work(vha, sp->fcport); 611 } else { 612 sp->fcport->login_retry = 0; 613 sp->fcport->disc_state = DSC_LOGIN_COMPLETE; 614 sp->fcport->deleted = 0; 615 sp->fcport->logout_on_delete = 1; 616 } 617 break; 618 619 case SRB_NACK_LOGO: 620 sp->fcport->login_gen++; 621 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 622 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 623 break; 624 } 625 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 626 627 sp->free(sp); 628 } 629 630 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 631 struct imm_ntfy_from_isp *ntfy, int type) 632 { 633 int rval = QLA_FUNCTION_FAILED; 634 srb_t *sp; 635 char *c = NULL; 636 637 fcport->flags |= FCF_ASYNC_SENT; 638 switch (type) { 639 case SRB_NACK_PLOGI: 640 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 641 c = "PLOGI"; 642 break; 643 case SRB_NACK_PRLI: 644 fcport->fw_login_state = DSC_LS_PRLI_PEND; 645 fcport->deleted = 0; 646 c = "PRLI"; 647 break; 648 case SRB_NACK_LOGO: 649 fcport->fw_login_state = DSC_LS_LOGO_PEND; 650 c = "LOGO"; 651 break; 652 } 653 654 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 655 if (!sp) 656 goto done; 657 658 sp->type = type; 659 sp->name = "nack"; 660 661 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 662 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 663 664 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 665 sp->done = qla2x00_async_nack_sp_done; 666 667 rval = qla2x00_start_sp(sp); 668 if (rval != QLA_SUCCESS) 669 goto done_free_sp; 670 671 ql_dbg(ql_dbg_disc, vha, 0x20f4, 672 "Async-%s %8phC hndl %x %s\n", 673 sp->name, fcport->port_name, sp->handle, c); 674 675 return rval; 676 677 done_free_sp: 678 sp->free(sp); 679 done: 680 fcport->flags &= ~FCF_ASYNC_SENT; 681 return rval; 682 } 683 684 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 685 { 686 fc_port_t *t; 687 unsigned long flags; 688 689 switch (e->u.nack.type) { 690 case SRB_NACK_PRLI: 691 mutex_lock(&vha->vha_tgt.tgt_mutex); 692 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 693 mutex_unlock(&vha->vha_tgt.tgt_mutex); 694 if (t) { 695 ql_log(ql_log_info, vha, 0xd034, 696 "%s create sess success %p", __func__, t); 697 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 698 /* create sess has an extra kref */ 699 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 700 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 701 } 702 break; 703 } 704 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 705 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); 706 } 707 708 void qla24xx_delete_sess_fn(struct work_struct *work) 709 { 710 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 711 struct qla_hw_data *ha = fcport->vha->hw; 712 unsigned long flags; 713 714 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 715 716 if (fcport->se_sess) { 717 ha->tgt.tgt_ops->shutdown_sess(fcport); 718 ha->tgt.tgt_ops->put_sess(fcport); 719 } else { 720 qlt_unreg_sess(fcport); 721 } 722 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 723 } 724 725 /* 726 * Called from qla2x00_reg_remote_port() 727 */ 728 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 729 { 730 struct qla_hw_data *ha = vha->hw; 731 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 732 struct fc_port *sess = fcport; 733 unsigned long flags; 734 735 if (!vha->hw->tgt.tgt_ops) 736 return; 737 738 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 739 if (tgt->tgt_stop) { 740 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 741 return; 742 } 743 744 if (fcport->disc_state == DSC_DELETE_PEND) { 745 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 746 return; 747 } 748 749 if (!sess->se_sess) { 750 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 751 752 mutex_lock(&vha->vha_tgt.tgt_mutex); 753 sess = qlt_create_sess(vha, fcport, false); 754 mutex_unlock(&vha->vha_tgt.tgt_mutex); 755 756 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 757 } else { 758 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 759 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 760 return; 761 } 762 763 if (!kref_get_unless_zero(&sess->sess_kref)) { 764 ql_dbg(ql_dbg_disc, vha, 0x2107, 765 "%s: kref_get fail sess %8phC \n", 766 __func__, sess->port_name); 767 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 768 return; 769 } 770 771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 772 "qla_target(%u): %ssession for port %8phC " 773 "(loop ID %d) reappeared\n", vha->vp_idx, 774 sess->local ? "local " : "", sess->port_name, sess->loop_id); 775 776 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 777 "Reappeared sess %p\n", sess); 778 779 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 780 fcport->loop_id, 781 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 782 } 783 784 if (sess && sess->local) { 785 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 786 "qla_target(%u): local session for " 787 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 788 fcport->port_name, sess->loop_id); 789 sess->local = 0; 790 } 791 ha->tgt.tgt_ops->put_sess(sess); 792 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 793 } 794 795 /* 796 * This is a zero-base ref-counting solution, since hardware_lock 797 * guarantees that ref_count is not modified concurrently. 798 * Upon successful return content of iocb is undefined 799 */ 800 static struct qlt_plogi_ack_t * 801 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 802 struct imm_ntfy_from_isp *iocb) 803 { 804 struct qlt_plogi_ack_t *pla; 805 806 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 807 if (pla->id.b24 == id->b24) { 808 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 809 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 810 return pla; 811 } 812 } 813 814 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 815 if (!pla) { 816 ql_dbg(ql_dbg_async, vha, 0x5088, 817 "qla_target(%d): Allocation of plogi_ack failed\n", 818 vha->vp_idx); 819 return NULL; 820 } 821 822 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 823 pla->id = *id; 824 list_add_tail(&pla->list, &vha->plogi_ack_list); 825 826 return pla; 827 } 828 829 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 830 struct qlt_plogi_ack_t *pla) 831 { 832 struct imm_ntfy_from_isp *iocb = &pla->iocb; 833 port_id_t port_id; 834 uint16_t loop_id; 835 fc_port_t *fcport = pla->fcport; 836 837 BUG_ON(!pla->ref_count); 838 pla->ref_count--; 839 840 if (pla->ref_count) 841 return; 842 843 ql_dbg(ql_dbg_disc, vha, 0x5089, 844 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 845 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 846 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 847 iocb->u.isp24.port_id[0], 848 le16_to_cpu(iocb->u.isp24.nport_handle), 849 iocb->u.isp24.exchange_address, iocb->ox_id); 850 851 port_id.b.domain = iocb->u.isp24.port_id[2]; 852 port_id.b.area = iocb->u.isp24.port_id[1]; 853 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 854 port_id.b.rsvd_1 = 0; 855 856 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 857 858 fcport->loop_id = loop_id; 859 fcport->d_id = port_id; 860 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 861 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 862 else 863 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 864 865 list_for_each_entry(fcport, &vha->vp_fcports, list) { 866 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 867 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 868 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 869 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 870 } 871 872 list_del(&pla->list); 873 kmem_cache_free(qla_tgt_plogi_cachep, pla); 874 } 875 876 void 877 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 878 struct fc_port *sess, enum qlt_plogi_link_t link) 879 { 880 struct imm_ntfy_from_isp *iocb = &pla->iocb; 881 /* Inc ref_count first because link might already be pointing at pla */ 882 pla->ref_count++; 883 884 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 885 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 886 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 887 sess, link, sess->port_name, 888 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 889 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 890 pla->ref_count, pla, link); 891 892 if (link == QLT_PLOGI_LINK_CONFLICT) { 893 switch (sess->disc_state) { 894 case DSC_DELETED: 895 case DSC_DELETE_PEND: 896 pla->ref_count--; 897 return; 898 default: 899 break; 900 } 901 } 902 903 if (sess->plogi_link[link]) 904 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 905 906 if (link == QLT_PLOGI_LINK_SAME_WWN) 907 pla->fcport = sess; 908 909 sess->plogi_link[link] = pla; 910 } 911 912 typedef struct { 913 /* These fields must be initialized by the caller */ 914 port_id_t id; 915 /* 916 * number of cmds dropped while we were waiting for 917 * initiator to ack LOGO initialize to 1 if LOGO is 918 * triggered by a command, otherwise, to 0 919 */ 920 int cmd_count; 921 922 /* These fields are used by callee */ 923 struct list_head list; 924 } qlt_port_logo_t; 925 926 static void 927 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 928 { 929 qlt_port_logo_t *tmp; 930 int res; 931 932 mutex_lock(&vha->vha_tgt.tgt_mutex); 933 934 list_for_each_entry(tmp, &vha->logo_list, list) { 935 if (tmp->id.b24 == logo->id.b24) { 936 tmp->cmd_count += logo->cmd_count; 937 mutex_unlock(&vha->vha_tgt.tgt_mutex); 938 return; 939 } 940 } 941 942 list_add_tail(&logo->list, &vha->logo_list); 943 944 mutex_unlock(&vha->vha_tgt.tgt_mutex); 945 946 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 947 948 mutex_lock(&vha->vha_tgt.tgt_mutex); 949 list_del(&logo->list); 950 mutex_unlock(&vha->vha_tgt.tgt_mutex); 951 952 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 953 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 954 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 955 logo->cmd_count, res); 956 } 957 958 void qlt_free_session_done(struct work_struct *work) 959 { 960 struct fc_port *sess = container_of(work, struct fc_port, 961 free_work); 962 struct qla_tgt *tgt = sess->tgt; 963 struct scsi_qla_host *vha = sess->vha; 964 struct qla_hw_data *ha = vha->hw; 965 unsigned long flags; 966 bool logout_started = false; 967 scsi_qla_host_t *base_vha; 968 struct qlt_plogi_ack_t *own = 969 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 970 971 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 972 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 973 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 974 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 975 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 976 sess->logout_on_delete, sess->keep_nport_handle, 977 sess->send_els_logo); 978 979 if (!IS_SW_RESV_ADDR(sess->d_id)) { 980 if (sess->send_els_logo) { 981 qlt_port_logo_t logo; 982 983 logo.id = sess->d_id; 984 logo.cmd_count = 0; 985 sess->send_els_logo = 0; 986 qlt_send_first_logo(vha, &logo); 987 } 988 989 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 990 int rc; 991 992 if (!own || 993 (own && 994 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 995 rc = qla2x00_post_async_logout_work(vha, sess, 996 NULL); 997 if (rc != QLA_SUCCESS) 998 ql_log(ql_log_warn, vha, 0xf085, 999 "Schedule logo failed sess %p rc %d\n", 1000 sess, rc); 1001 else 1002 logout_started = true; 1003 } else if (own && (own->iocb.u.isp24.status_subcode == 1004 ELS_PRLI) && ha->flags.rida_fmt2) { 1005 rc = qla2x00_post_async_prlo_work(vha, sess, 1006 NULL); 1007 if (rc != QLA_SUCCESS) 1008 ql_log(ql_log_warn, vha, 0xf085, 1009 "Schedule PRLO failed sess %p rc %d\n", 1010 sess, rc); 1011 else 1012 logout_started = true; 1013 } 1014 } 1015 } 1016 1017 /* 1018 * Release the target session for FC Nexus from fabric module code. 1019 */ 1020 if (sess->se_sess != NULL) 1021 ha->tgt.tgt_ops->free_session(sess); 1022 1023 if (logout_started) { 1024 bool traced = false; 1025 1026 while (!READ_ONCE(sess->logout_completed)) { 1027 if (!traced) { 1028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 1029 "%s: waiting for sess %p logout\n", 1030 __func__, sess); 1031 traced = true; 1032 } 1033 msleep(100); 1034 } 1035 1036 ql_dbg(ql_dbg_disc, vha, 0xf087, 1037 "%s: sess %p logout completed\n", __func__, sess); 1038 } 1039 1040 if (sess->logo_ack_needed) { 1041 sess->logo_ack_needed = 0; 1042 qla24xx_async_notify_ack(vha, sess, 1043 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1044 } 1045 1046 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1047 if (sess->se_sess) { 1048 sess->se_sess = NULL; 1049 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1050 tgt->sess_count--; 1051 } 1052 1053 sess->disc_state = DSC_DELETED; 1054 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1055 sess->deleted = QLA_SESS_DELETED; 1056 sess->login_retry = vha->hw->login_retry_count; 1057 1058 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1059 vha->fcport_count--; 1060 sess->login_succ = 0; 1061 } 1062 1063 qla2x00_clear_loop_id(sess); 1064 1065 if (sess->conflict) { 1066 sess->conflict->login_pause = 0; 1067 sess->conflict = NULL; 1068 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1069 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1070 } 1071 1072 { 1073 struct qlt_plogi_ack_t *con = 1074 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1075 struct imm_ntfy_from_isp *iocb; 1076 1077 if (con) { 1078 iocb = &con->iocb; 1079 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1080 "se_sess %p / sess %p port %8phC is gone," 1081 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1082 sess->se_sess, sess, sess->port_name, 1083 own ? "releasing own PLOGI" : "no own PLOGI pending", 1084 own ? own->ref_count : -1, 1085 iocb->u.isp24.port_name, con->ref_count); 1086 qlt_plogi_ack_unref(vha, con); 1087 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1088 } else { 1089 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1090 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1091 sess->se_sess, sess, sess->port_name, 1092 own ? "releasing own PLOGI" : 1093 "no own PLOGI pending", 1094 own ? own->ref_count : -1); 1095 } 1096 1097 if (own) { 1098 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1099 qlt_plogi_ack_unref(vha, own); 1100 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1101 } 1102 } 1103 1104 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1105 1106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1107 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1108 sess, sess->port_name, vha->fcport_count); 1109 1110 if (tgt && (tgt->sess_count == 0)) 1111 wake_up_all(&tgt->waitQ); 1112 1113 if (vha->fcport_count == 0) 1114 wake_up_all(&vha->fcport_waitQ); 1115 1116 base_vha = pci_get_drvdata(ha->pdev); 1117 1118 sess->free_pending = 0; 1119 1120 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1121 return; 1122 1123 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1124 switch (vha->host->active_mode) { 1125 case MODE_INITIATOR: 1126 case MODE_DUAL: 1127 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1128 qla2xxx_wake_dpc(vha); 1129 break; 1130 case MODE_TARGET: 1131 default: 1132 /* no-op */ 1133 break; 1134 } 1135 } 1136 } 1137 1138 /* ha->tgt.sess_lock supposed to be held on entry */ 1139 void qlt_unreg_sess(struct fc_port *sess) 1140 { 1141 struct scsi_qla_host *vha = sess->vha; 1142 unsigned long flags; 1143 1144 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1145 "%s sess %p for deletion %8phC\n", 1146 __func__, sess, sess->port_name); 1147 1148 spin_lock_irqsave(&sess->vha->work_lock, flags); 1149 if (sess->free_pending) { 1150 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1151 return; 1152 } 1153 sess->free_pending = 1; 1154 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1155 1156 if (sess->se_sess) 1157 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1158 1159 qla2x00_mark_device_lost(vha, sess, 1, 1); 1160 1161 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1162 sess->disc_state = DSC_DELETE_PEND; 1163 sess->last_rscn_gen = sess->rscn_gen; 1164 sess->last_login_gen = sess->login_gen; 1165 1166 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1167 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1168 sess->nvme_flag |= NVME_FLAG_DELETING; 1169 schedule_work(&sess->nvme_del_work); 1170 } else { 1171 INIT_WORK(&sess->free_work, qlt_free_session_done); 1172 schedule_work(&sess->free_work); 1173 } 1174 } 1175 EXPORT_SYMBOL(qlt_unreg_sess); 1176 1177 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1178 { 1179 struct qla_hw_data *ha = vha->hw; 1180 struct fc_port *sess = NULL; 1181 uint16_t loop_id; 1182 int res = 0; 1183 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1184 unsigned long flags; 1185 1186 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1187 if (loop_id == 0xFFFF) { 1188 /* Global event */ 1189 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1190 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1191 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1192 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1193 } else { 1194 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1195 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1196 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1197 } 1198 1199 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1200 "Using sess for qla_tgt_reset: %p\n", sess); 1201 if (!sess) { 1202 res = -ESRCH; 1203 return res; 1204 } 1205 1206 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1207 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1208 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1209 mcmd, loop_id); 1210 1211 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1212 } 1213 1214 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1215 { 1216 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1217 sess->logout_on_delete = 0; 1218 sess->logo_ack_needed = 0; 1219 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1220 sess->scan_state = 0; 1221 } 1222 } 1223 1224 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1225 { 1226 struct qla_tgt *tgt = sess->tgt; 1227 struct qla_hw_data *ha = sess->vha->hw; 1228 unsigned long flags; 1229 1230 if (sess->disc_state == DSC_DELETE_PEND) 1231 return; 1232 1233 if (sess->disc_state == DSC_DELETED) { 1234 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1235 wake_up_all(&tgt->waitQ); 1236 if (sess->vha->fcport_count == 0) 1237 wake_up_all(&sess->vha->fcport_waitQ); 1238 1239 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1240 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1241 return; 1242 } 1243 1244 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1245 if (sess->deleted == QLA_SESS_DELETED) 1246 sess->logout_on_delete = 0; 1247 1248 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1249 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1250 return; 1251 } 1252 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1253 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1254 1255 sess->disc_state = DSC_DELETE_PEND; 1256 1257 qla24xx_chk_fcp_state(sess); 1258 1259 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1260 "Scheduling sess %p for deletion\n", sess); 1261 1262 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn); 1263 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1264 } 1265 1266 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1267 { 1268 struct fc_port *sess; 1269 scsi_qla_host_t *vha = tgt->vha; 1270 1271 list_for_each_entry(sess, &vha->vp_fcports, list) { 1272 if (sess->se_sess) 1273 qlt_schedule_sess_for_deletion(sess); 1274 } 1275 1276 /* At this point tgt could be already dead */ 1277 } 1278 1279 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1280 uint16_t *loop_id) 1281 { 1282 struct qla_hw_data *ha = vha->hw; 1283 dma_addr_t gid_list_dma; 1284 struct gid_list_info *gid_list; 1285 char *id_iter; 1286 int res, rc, i; 1287 uint16_t entries; 1288 1289 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1290 &gid_list_dma, GFP_KERNEL); 1291 if (!gid_list) { 1292 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1293 "qla_target(%d): DMA Alloc failed of %u\n", 1294 vha->vp_idx, qla2x00_gid_list_size(ha)); 1295 return -ENOMEM; 1296 } 1297 1298 /* Get list of logged in devices */ 1299 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1300 if (rc != QLA_SUCCESS) { 1301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1302 "qla_target(%d): get_id_list() failed: %x\n", 1303 vha->vp_idx, rc); 1304 res = -EBUSY; 1305 goto out_free_id_list; 1306 } 1307 1308 id_iter = (char *)gid_list; 1309 res = -ENOENT; 1310 for (i = 0; i < entries; i++) { 1311 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1312 if ((gid->al_pa == s_id[2]) && 1313 (gid->area == s_id[1]) && 1314 (gid->domain == s_id[0])) { 1315 *loop_id = le16_to_cpu(gid->loop_id); 1316 res = 0; 1317 break; 1318 } 1319 id_iter += ha->gid_list_info_size; 1320 } 1321 1322 out_free_id_list: 1323 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1324 gid_list, gid_list_dma); 1325 return res; 1326 } 1327 1328 /* 1329 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1330 * Caller must put it. 1331 */ 1332 static struct fc_port *qlt_create_sess( 1333 struct scsi_qla_host *vha, 1334 fc_port_t *fcport, 1335 bool local) 1336 { 1337 struct qla_hw_data *ha = vha->hw; 1338 struct fc_port *sess = fcport; 1339 unsigned long flags; 1340 1341 if (vha->vha_tgt.qla_tgt->tgt_stop) 1342 return NULL; 1343 1344 if (fcport->se_sess) { 1345 if (!kref_get_unless_zero(&sess->sess_kref)) { 1346 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1347 "%s: kref_get_unless_zero failed for %8phC\n", 1348 __func__, sess->port_name); 1349 return NULL; 1350 } 1351 return fcport; 1352 } 1353 sess->tgt = vha->vha_tgt.qla_tgt; 1354 sess->local = local; 1355 1356 /* 1357 * Under normal circumstances we want to logout from firmware when 1358 * session eventually ends and release corresponding nport handle. 1359 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1360 * code will adjust these flags as necessary. 1361 */ 1362 sess->logout_on_delete = 1; 1363 sess->keep_nport_handle = 0; 1364 sess->logout_completed = 0; 1365 1366 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1367 &fcport->port_name[0], sess) < 0) { 1368 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1369 "(%d) %8phC check_initiator_node_acl failed\n", 1370 vha->vp_idx, fcport->port_name); 1371 return NULL; 1372 } else { 1373 kref_init(&fcport->sess_kref); 1374 /* 1375 * Take an extra reference to ->sess_kref here to handle 1376 * fc_port access across ->tgt.sess_lock reaquire. 1377 */ 1378 if (!kref_get_unless_zero(&sess->sess_kref)) { 1379 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1380 "%s: kref_get_unless_zero failed for %8phC\n", 1381 __func__, sess->port_name); 1382 return NULL; 1383 } 1384 1385 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1386 if (!IS_SW_RESV_ADDR(sess->d_id)) 1387 vha->vha_tgt.qla_tgt->sess_count++; 1388 1389 qlt_do_generation_tick(vha, &sess->generation); 1390 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1391 } 1392 1393 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1394 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1395 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1396 vha->vha_tgt.qla_tgt->sess_count); 1397 1398 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1399 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1400 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1401 vha->vp_idx, local ? "local " : "", fcport->port_name, 1402 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1403 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1404 1405 return sess; 1406 } 1407 1408 /* 1409 * max_gen - specifies maximum session generation 1410 * at which this deletion requestion is still valid 1411 */ 1412 void 1413 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1414 { 1415 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1416 struct fc_port *sess = fcport; 1417 unsigned long flags; 1418 1419 if (!vha->hw->tgt.tgt_ops) 1420 return; 1421 1422 if (!tgt) 1423 return; 1424 1425 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1426 if (tgt->tgt_stop) { 1427 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1428 return; 1429 } 1430 if (!sess->se_sess) { 1431 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1432 return; 1433 } 1434 1435 if (max_gen - sess->generation < 0) { 1436 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1437 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1438 "Ignoring stale deletion request for se_sess %p / sess %p" 1439 " for port %8phC, req_gen %d, sess_gen %d\n", 1440 sess->se_sess, sess, sess->port_name, max_gen, 1441 sess->generation); 1442 return; 1443 } 1444 1445 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1446 1447 sess->local = 1; 1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1449 qlt_schedule_sess_for_deletion(sess); 1450 } 1451 1452 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1453 { 1454 struct qla_hw_data *ha = tgt->ha; 1455 unsigned long flags; 1456 int res; 1457 /* 1458 * We need to protect against race, when tgt is freed before or 1459 * inside wake_up() 1460 */ 1461 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1462 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1463 "tgt %p, sess_count=%d\n", 1464 tgt, tgt->sess_count); 1465 res = (tgt->sess_count == 0); 1466 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1467 1468 return res; 1469 } 1470 1471 /* Called by tcm_qla2xxx configfs code */ 1472 int qlt_stop_phase1(struct qla_tgt *tgt) 1473 { 1474 struct scsi_qla_host *vha = tgt->vha; 1475 struct qla_hw_data *ha = tgt->ha; 1476 unsigned long flags; 1477 1478 mutex_lock(&qla_tgt_mutex); 1479 if (!vha->fc_vport) { 1480 struct Scsi_Host *sh = vha->host; 1481 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 1482 bool npiv_vports; 1483 1484 spin_lock_irqsave(sh->host_lock, flags); 1485 npiv_vports = (fc_host->npiv_vports_inuse); 1486 spin_unlock_irqrestore(sh->host_lock, flags); 1487 1488 if (npiv_vports) { 1489 mutex_unlock(&qla_tgt_mutex); 1490 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 1491 "NPIV is in use. Can not stop target\n"); 1492 return -EPERM; 1493 } 1494 } 1495 if (tgt->tgt_stop || tgt->tgt_stopped) { 1496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1497 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1498 mutex_unlock(&qla_tgt_mutex); 1499 return -EPERM; 1500 } 1501 1502 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1503 vha->host_no, vha); 1504 /* 1505 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1506 * Lock is needed, because we still can get an incoming packet. 1507 */ 1508 mutex_lock(&vha->vha_tgt.tgt_mutex); 1509 tgt->tgt_stop = 1; 1510 qlt_clear_tgt_db(tgt); 1511 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1512 mutex_unlock(&qla_tgt_mutex); 1513 1514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1515 "Waiting for sess works (tgt %p)", tgt); 1516 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1517 while (!list_empty(&tgt->sess_works_list)) { 1518 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1519 flush_scheduled_work(); 1520 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1521 } 1522 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1523 1524 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1525 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1526 1527 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1528 1529 /* Big hammer */ 1530 if (!ha->flags.host_shutting_down && 1531 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1532 qlt_disable_vha(vha); 1533 1534 /* Wait for sessions to clear out (just in case) */ 1535 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1536 return 0; 1537 } 1538 EXPORT_SYMBOL(qlt_stop_phase1); 1539 1540 /* Called by tcm_qla2xxx configfs code */ 1541 void qlt_stop_phase2(struct qla_tgt *tgt) 1542 { 1543 scsi_qla_host_t *vha = tgt->vha; 1544 1545 if (tgt->tgt_stopped) { 1546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1547 "Already in tgt->tgt_stopped state\n"); 1548 dump_stack(); 1549 return; 1550 } 1551 if (!tgt->tgt_stop) { 1552 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1553 "%s: phase1 stop is not completed\n", __func__); 1554 dump_stack(); 1555 return; 1556 } 1557 1558 mutex_lock(&vha->vha_tgt.tgt_mutex); 1559 tgt->tgt_stop = 0; 1560 tgt->tgt_stopped = 1; 1561 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1562 1563 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1564 tgt); 1565 } 1566 EXPORT_SYMBOL(qlt_stop_phase2); 1567 1568 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1569 static void qlt_release(struct qla_tgt *tgt) 1570 { 1571 scsi_qla_host_t *vha = tgt->vha; 1572 void *node; 1573 u64 key = 0; 1574 u16 i; 1575 struct qla_qpair_hint *h; 1576 struct qla_hw_data *ha = vha->hw; 1577 1578 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop && 1579 !tgt->tgt_stopped) 1580 qlt_stop_phase1(tgt); 1581 1582 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1583 qlt_stop_phase2(tgt); 1584 1585 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1586 unsigned long flags; 1587 1588 h = &tgt->qphints[i]; 1589 if (h->qpair) { 1590 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1591 list_del(&h->hint_elem); 1592 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1593 h->qpair = NULL; 1594 } 1595 } 1596 kfree(tgt->qphints); 1597 mutex_lock(&qla_tgt_mutex); 1598 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1599 mutex_unlock(&qla_tgt_mutex); 1600 1601 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1602 btree_remove64(&tgt->lun_qpair_map, key); 1603 1604 btree_destroy64(&tgt->lun_qpair_map); 1605 1606 if (vha->vp_idx) 1607 if (ha->tgt.tgt_ops && 1608 ha->tgt.tgt_ops->remove_target && 1609 vha->vha_tgt.target_lport_ptr) 1610 ha->tgt.tgt_ops->remove_target(vha); 1611 1612 vha->vha_tgt.qla_tgt = NULL; 1613 1614 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1615 "Release of tgt %p finished\n", tgt); 1616 1617 kfree(tgt); 1618 } 1619 1620 /* ha->hardware_lock supposed to be held on entry */ 1621 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1622 const void *param, unsigned int param_size) 1623 { 1624 struct qla_tgt_sess_work_param *prm; 1625 unsigned long flags; 1626 1627 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1628 if (!prm) { 1629 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1630 "qla_target(%d): Unable to create session " 1631 "work, command will be refused", 0); 1632 return -ENOMEM; 1633 } 1634 1635 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1636 "Scheduling work (type %d, prm %p)" 1637 " to find session for param %p (size %d, tgt %p)\n", 1638 type, prm, param, param_size, tgt); 1639 1640 prm->type = type; 1641 memcpy(&prm->tm_iocb, param, param_size); 1642 1643 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1644 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1645 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1646 1647 schedule_work(&tgt->sess_work); 1648 1649 return 0; 1650 } 1651 1652 /* 1653 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1654 */ 1655 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1656 struct imm_ntfy_from_isp *ntfy, 1657 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1658 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1659 { 1660 struct scsi_qla_host *vha = qpair->vha; 1661 struct qla_hw_data *ha = vha->hw; 1662 request_t *pkt; 1663 struct nack_to_isp *nack; 1664 1665 if (!ha->flags.fw_started) 1666 return; 1667 1668 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1669 1670 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1671 if (!pkt) { 1672 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1673 "qla_target(%d): %s failed: unable to allocate " 1674 "request packet\n", vha->vp_idx, __func__); 1675 return; 1676 } 1677 1678 if (vha->vha_tgt.qla_tgt != NULL) 1679 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1680 1681 pkt->entry_type = NOTIFY_ACK_TYPE; 1682 pkt->entry_count = 1; 1683 1684 nack = (struct nack_to_isp *)pkt; 1685 nack->ox_id = ntfy->ox_id; 1686 1687 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1688 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1689 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1690 nack->u.isp24.flags = ntfy->u.isp24.flags & 1691 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1692 } 1693 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1694 nack->u.isp24.status = ntfy->u.isp24.status; 1695 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1696 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1697 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1698 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1699 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1700 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1701 nack->u.isp24.srr_reject_code = srr_reject_code; 1702 nack->u.isp24.srr_reject_code_expl = srr_explan; 1703 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1704 1705 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1706 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1707 vha->vp_idx, nack->u.isp24.status); 1708 1709 /* Memory Barrier */ 1710 wmb(); 1711 qla2x00_start_iocbs(vha, qpair->req); 1712 } 1713 1714 /* 1715 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1716 */ 1717 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1718 struct abts_recv_from_24xx *abts, uint32_t status, 1719 bool ids_reversed) 1720 { 1721 struct scsi_qla_host *vha = qpair->vha; 1722 struct qla_hw_data *ha = vha->hw; 1723 struct abts_resp_to_24xx *resp; 1724 uint32_t f_ctl; 1725 uint8_t *p; 1726 1727 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1728 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1729 ha, abts, status); 1730 1731 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1732 NULL); 1733 if (!resp) { 1734 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1735 "qla_target(%d): %s failed: unable to allocate " 1736 "request packet", vha->vp_idx, __func__); 1737 return; 1738 } 1739 1740 resp->entry_type = ABTS_RESP_24XX; 1741 resp->entry_count = 1; 1742 resp->nport_handle = abts->nport_handle; 1743 resp->vp_index = vha->vp_idx; 1744 resp->sof_type = abts->sof_type; 1745 resp->exchange_address = abts->exchange_address; 1746 resp->fcp_hdr_le = abts->fcp_hdr_le; 1747 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1748 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1749 F_CTL_SEQ_INITIATIVE); 1750 p = (uint8_t *)&f_ctl; 1751 resp->fcp_hdr_le.f_ctl[0] = *p++; 1752 resp->fcp_hdr_le.f_ctl[1] = *p++; 1753 resp->fcp_hdr_le.f_ctl[2] = *p; 1754 if (ids_reversed) { 1755 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1756 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1757 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1758 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1759 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1760 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1761 } else { 1762 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1763 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1764 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1765 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1766 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1767 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1768 } 1769 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1770 if (status == FCP_TMF_CMPL) { 1771 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1772 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1773 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1774 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1775 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1776 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1777 } else { 1778 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1779 resp->payload.ba_rjt.reason_code = 1780 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1781 /* Other bytes are zero */ 1782 } 1783 1784 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1785 1786 /* Memory Barrier */ 1787 wmb(); 1788 if (qpair->reqq_start_iocbs) 1789 qpair->reqq_start_iocbs(qpair); 1790 else 1791 qla2x00_start_iocbs(vha, qpair->req); 1792 } 1793 1794 /* 1795 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1796 */ 1797 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1798 struct abts_resp_from_24xx_fw *entry) 1799 { 1800 struct ctio7_to_24xx *ctio; 1801 1802 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1803 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1804 1805 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready( 1806 vha->hw->base_qpair, NULL); 1807 if (ctio == NULL) { 1808 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1809 "qla_target(%d): %s failed: unable to allocate " 1810 "request packet\n", vha->vp_idx, __func__); 1811 return; 1812 } 1813 1814 /* 1815 * We've got on entrance firmware's response on by us generated 1816 * ABTS response. So, in it ID fields are reversed. 1817 */ 1818 1819 ctio->entry_type = CTIO_TYPE7; 1820 ctio->entry_count = 1; 1821 ctio->nport_handle = entry->nport_handle; 1822 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1823 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1824 ctio->vp_index = vha->vp_idx; 1825 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1826 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1827 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1828 ctio->exchange_addr = entry->exchange_addr_to_abort; 1829 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1830 CTIO7_FLAGS_TERMINATE); 1831 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1832 1833 /* Memory Barrier */ 1834 wmb(); 1835 qla2x00_start_iocbs(vha, vha->req); 1836 1837 qlt_24xx_send_abts_resp(vha->hw->base_qpair, 1838 (struct abts_recv_from_24xx *)entry, 1839 FCP_TMF_CMPL, true); 1840 } 1841 1842 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1843 { 1844 struct qla_tgt_sess_op *op; 1845 struct qla_tgt_cmd *cmd; 1846 unsigned long flags; 1847 1848 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1849 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1850 if (tag == op->atio.u.isp24.exchange_addr) { 1851 op->aborted = true; 1852 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1853 return 1; 1854 } 1855 } 1856 1857 list_for_each_entry(op, &vha->unknown_atio_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(cmd, &vha->qla_cmd_list, cmd_list) { 1866 if (tag == cmd->atio.u.isp24.exchange_addr) { 1867 cmd->aborted = 1; 1868 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1869 return 1; 1870 } 1871 } 1872 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1873 1874 return 0; 1875 } 1876 1877 /* drop cmds for the given lun 1878 * XXX only looks for cmds on the port through which lun reset was recieved 1879 * XXX does not go through the list of other port (which may have cmds 1880 * for the same lun) 1881 */ 1882 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1883 u64 lun, uint8_t *s_id) 1884 { 1885 struct qla_tgt_sess_op *op; 1886 struct qla_tgt_cmd *cmd; 1887 uint32_t key; 1888 unsigned long flags; 1889 1890 key = sid_to_key(s_id); 1891 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1892 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1893 uint32_t op_key; 1894 u64 op_lun; 1895 1896 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1897 op_lun = scsilun_to_int( 1898 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1899 if (op_key == key && op_lun == lun) 1900 op->aborted = true; 1901 } 1902 1903 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1904 uint32_t op_key; 1905 u64 op_lun; 1906 1907 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1908 op_lun = scsilun_to_int( 1909 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1910 if (op_key == key && op_lun == lun) 1911 op->aborted = true; 1912 } 1913 1914 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1915 uint32_t cmd_key; 1916 u64 cmd_lun; 1917 1918 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1919 cmd_lun = scsilun_to_int( 1920 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1921 if (cmd_key == key && cmd_lun == lun) 1922 cmd->aborted = 1; 1923 } 1924 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1925 } 1926 1927 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 1928 uint64_t unpacked_lun) 1929 { 1930 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1931 struct qla_qpair_hint *h = NULL; 1932 1933 if (vha->flags.qpairs_available) { 1934 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 1935 if (!h) 1936 h = &tgt->qphints[0]; 1937 } else { 1938 h = &tgt->qphints[0]; 1939 } 1940 1941 return h; 1942 } 1943 1944 static void qlt_do_tmr_work(struct work_struct *work) 1945 { 1946 struct qla_tgt_mgmt_cmd *mcmd = 1947 container_of(work, struct qla_tgt_mgmt_cmd, work); 1948 struct qla_hw_data *ha = mcmd->vha->hw; 1949 int rc = EIO; 1950 uint32_t tag; 1951 unsigned long flags; 1952 1953 switch (mcmd->tmr_func) { 1954 case QLA_TGT_ABTS: 1955 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort; 1956 break; 1957 default: 1958 tag = 0; 1959 break; 1960 } 1961 1962 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 1963 mcmd->tmr_func, tag); 1964 1965 if (rc != 0) { 1966 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 1967 switch (mcmd->tmr_func) { 1968 case QLA_TGT_ABTS: 1969 qlt_24xx_send_abts_resp(mcmd->qpair, 1970 &mcmd->orig_iocb.abts, 1971 FCP_TMF_REJECTED, false); 1972 break; 1973 case QLA_TGT_LUN_RESET: 1974 case QLA_TGT_CLEAR_TS: 1975 case QLA_TGT_ABORT_TS: 1976 case QLA_TGT_CLEAR_ACA: 1977 case QLA_TGT_TARGET_RESET: 1978 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 1979 qla_sam_status); 1980 break; 1981 1982 case QLA_TGT_ABORT_ALL: 1983 case QLA_TGT_NEXUS_LOSS_SESS: 1984 case QLA_TGT_NEXUS_LOSS: 1985 qlt_send_notify_ack(mcmd->qpair, 1986 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 1987 break; 1988 } 1989 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 1990 1991 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 1992 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 1993 mcmd->vha->vp_idx, rc); 1994 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1995 } 1996 } 1997 1998 /* ha->hardware_lock supposed to be held on entry */ 1999 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2000 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2001 { 2002 struct qla_hw_data *ha = vha->hw; 2003 struct qla_tgt_mgmt_cmd *mcmd; 2004 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2005 2006 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 2007 /* send TASK_ABORT response immediately */ 2008 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false); 2009 return 0; 2010 } 2011 2012 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2013 "qla_target(%d): task abort (tag=%d)\n", 2014 vha->vp_idx, abts->exchange_addr_to_abort); 2015 2016 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2017 if (mcmd == NULL) { 2018 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2019 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2020 vha->vp_idx, __func__); 2021 return -ENOMEM; 2022 } 2023 memset(mcmd, 0, sizeof(*mcmd)); 2024 2025 mcmd->sess = sess; 2026 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2027 mcmd->reset_count = ha->base_qpair->chip_reset; 2028 mcmd->tmr_func = QLA_TGT_ABTS; 2029 mcmd->qpair = h->qpair; 2030 mcmd->vha = vha; 2031 2032 /* 2033 * LUN is looked up by target-core internally based on the passed 2034 * abts->exchange_addr_to_abort tag. 2035 */ 2036 mcmd->se_cmd.cpuid = h->cpuid; 2037 2038 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2039 struct qla_tgt_cmd *abort_cmd; 2040 2041 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2042 abts->exchange_addr_to_abort); 2043 if (abort_cmd && abort_cmd->qpair) { 2044 mcmd->qpair = abort_cmd->qpair; 2045 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2046 } 2047 } 2048 2049 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2050 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2051 2052 return 0; 2053 } 2054 2055 /* 2056 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2057 */ 2058 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2059 struct abts_recv_from_24xx *abts) 2060 { 2061 struct qla_hw_data *ha = vha->hw; 2062 struct fc_port *sess; 2063 uint32_t tag = abts->exchange_addr_to_abort; 2064 uint8_t s_id[3]; 2065 int rc; 2066 unsigned long flags; 2067 2068 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2069 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2070 "qla_target(%d): ABTS: Abort Sequence not " 2071 "supported\n", vha->vp_idx); 2072 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2073 false); 2074 return; 2075 } 2076 2077 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2078 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2079 "qla_target(%d): ABTS: Unknown Exchange " 2080 "Address received\n", vha->vp_idx); 2081 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2082 false); 2083 return; 2084 } 2085 2086 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2087 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2088 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 2089 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 2090 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2091 2092 s_id[0] = abts->fcp_hdr_le.s_id[2]; 2093 s_id[1] = abts->fcp_hdr_le.s_id[1]; 2094 s_id[2] = abts->fcp_hdr_le.s_id[0]; 2095 2096 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2097 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2098 if (!sess) { 2099 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2100 "qla_target(%d): task abort for non-existent session\n", 2101 vha->vp_idx); 2102 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2103 2104 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2105 false); 2106 return; 2107 } 2108 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2109 2110 2111 if (sess->deleted) { 2112 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2113 false); 2114 return; 2115 } 2116 2117 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2118 if (rc != 0) { 2119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2120 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2121 vha->vp_idx, rc); 2122 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2123 false); 2124 return; 2125 } 2126 } 2127 2128 /* 2129 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2130 */ 2131 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2132 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2133 { 2134 struct scsi_qla_host *ha = mcmd->vha; 2135 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2136 struct ctio7_to_24xx *ctio; 2137 uint16_t temp; 2138 2139 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2140 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2141 ha, atio, resp_code); 2142 2143 2144 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2145 if (ctio == NULL) { 2146 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2147 "qla_target(%d): %s failed: unable to allocate " 2148 "request packet\n", ha->vp_idx, __func__); 2149 return; 2150 } 2151 2152 ctio->entry_type = CTIO_TYPE7; 2153 ctio->entry_count = 1; 2154 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2155 ctio->nport_handle = mcmd->sess->loop_id; 2156 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2157 ctio->vp_index = ha->vp_idx; 2158 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2159 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2160 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2161 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2162 temp = (atio->u.isp24.attr << 9)| 2163 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2164 ctio->u.status1.flags = cpu_to_le16(temp); 2165 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2166 ctio->u.status1.ox_id = cpu_to_le16(temp); 2167 ctio->u.status1.scsi_status = 2168 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2169 ctio->u.status1.response_len = cpu_to_le16(8); 2170 ctio->u.status1.sense_data[0] = resp_code; 2171 2172 /* Memory Barrier */ 2173 wmb(); 2174 if (qpair->reqq_start_iocbs) 2175 qpair->reqq_start_iocbs(qpair); 2176 else 2177 qla2x00_start_iocbs(ha, qpair->req); 2178 } 2179 2180 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2181 { 2182 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2183 } 2184 EXPORT_SYMBOL(qlt_free_mcmd); 2185 2186 /* 2187 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2188 * reacquire 2189 */ 2190 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2191 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2192 { 2193 struct atio_from_isp *atio = &cmd->atio; 2194 struct ctio7_to_24xx *ctio; 2195 uint16_t temp; 2196 struct scsi_qla_host *vha = cmd->vha; 2197 2198 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2199 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2200 "sense_key=%02x, asc=%02x, ascq=%02x", 2201 vha, atio, scsi_status, sense_key, asc, ascq); 2202 2203 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2204 if (!ctio) { 2205 ql_dbg(ql_dbg_async, vha, 0x3067, 2206 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2207 vha->host_no, __func__); 2208 goto out; 2209 } 2210 2211 ctio->entry_type = CTIO_TYPE7; 2212 ctio->entry_count = 1; 2213 ctio->handle = QLA_TGT_SKIP_HANDLE; 2214 ctio->nport_handle = cmd->sess->loop_id; 2215 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2216 ctio->vp_index = vha->vp_idx; 2217 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2218 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2219 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2220 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2221 temp = (atio->u.isp24.attr << 9) | 2222 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2223 ctio->u.status1.flags = cpu_to_le16(temp); 2224 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2225 ctio->u.status1.ox_id = cpu_to_le16(temp); 2226 ctio->u.status1.scsi_status = 2227 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2228 ctio->u.status1.response_len = cpu_to_le16(18); 2229 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2230 2231 if (ctio->u.status1.residual != 0) 2232 ctio->u.status1.scsi_status |= 2233 cpu_to_le16(SS_RESIDUAL_UNDER); 2234 2235 /* Response code and sense key */ 2236 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)), 2237 (&ctio->u.status1.sense_data)[0]); 2238 /* Additional sense length */ 2239 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]); 2240 /* ASC and ASCQ */ 2241 put_unaligned_le32(((asc << 24) | (ascq << 16)), 2242 (&ctio->u.status1.sense_data)[3]); 2243 2244 /* Memory Barrier */ 2245 wmb(); 2246 2247 if (qpair->reqq_start_iocbs) 2248 qpair->reqq_start_iocbs(qpair); 2249 else 2250 qla2x00_start_iocbs(vha, qpair->req); 2251 2252 out: 2253 return; 2254 } 2255 2256 /* callback from target fabric module code */ 2257 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2258 { 2259 struct scsi_qla_host *vha = mcmd->sess->vha; 2260 struct qla_hw_data *ha = vha->hw; 2261 unsigned long flags; 2262 struct qla_qpair *qpair = mcmd->qpair; 2263 2264 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2265 "TM response mcmd (%p) status %#x state %#x", 2266 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2267 2268 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2269 2270 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2271 /* 2272 * Either the port is not online or this request was from 2273 * previous life, just abort the processing. 2274 */ 2275 ql_dbg(ql_dbg_async, vha, 0xe100, 2276 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2277 vha->flags.online, qla2x00_reset_active(vha), 2278 mcmd->reset_count, qpair->chip_reset); 2279 ha->tgt.tgt_ops->free_mcmd(mcmd); 2280 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2281 return; 2282 } 2283 2284 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2285 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2286 ELS_LOGO || 2287 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2288 ELS_PRLO || 2289 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2290 ELS_TPRLO) { 2291 ql_dbg(ql_dbg_disc, vha, 0x2106, 2292 "TM response logo %phC status %#x state %#x", 2293 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2294 mcmd->flags); 2295 qlt_schedule_sess_for_deletion(mcmd->sess); 2296 } else { 2297 qlt_send_notify_ack(vha->hw->base_qpair, 2298 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2299 } 2300 } else { 2301 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) 2302 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts, 2303 mcmd->fc_tm_rsp, false); 2304 else 2305 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2306 mcmd->fc_tm_rsp); 2307 } 2308 /* 2309 * Make the callback for ->free_mcmd() to queue_work() and invoke 2310 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2311 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2312 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2313 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2314 * qlt_xmit_tm_rsp() returns here.. 2315 */ 2316 ha->tgt.tgt_ops->free_mcmd(mcmd); 2317 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2318 } 2319 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2320 2321 /* No locks */ 2322 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2323 { 2324 struct qla_tgt_cmd *cmd = prm->cmd; 2325 2326 BUG_ON(cmd->sg_cnt == 0); 2327 2328 prm->sg = (struct scatterlist *)cmd->sg; 2329 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg, 2330 cmd->sg_cnt, cmd->dma_data_direction); 2331 if (unlikely(prm->seg_cnt == 0)) 2332 goto out_err; 2333 2334 prm->cmd->sg_mapped = 1; 2335 2336 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2337 /* 2338 * If greater than four sg entries then we need to allocate 2339 * the continuation entries 2340 */ 2341 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2342 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2343 QLA_TGT_DATASEGS_PER_CMD_24XX, 2344 QLA_TGT_DATASEGS_PER_CONT_24XX); 2345 } else { 2346 /* DIF */ 2347 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2348 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2349 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2350 prm->tot_dsds = prm->seg_cnt; 2351 } else 2352 prm->tot_dsds = prm->seg_cnt; 2353 2354 if (cmd->prot_sg_cnt) { 2355 prm->prot_sg = cmd->prot_sg; 2356 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev, 2357 cmd->prot_sg, cmd->prot_sg_cnt, 2358 cmd->dma_data_direction); 2359 if (unlikely(prm->prot_seg_cnt == 0)) 2360 goto out_err; 2361 2362 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2363 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2364 /* Dif Bundling not support here */ 2365 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2366 cmd->blk_sz); 2367 prm->tot_dsds += prm->prot_seg_cnt; 2368 } else 2369 prm->tot_dsds += prm->prot_seg_cnt; 2370 } 2371 } 2372 2373 return 0; 2374 2375 out_err: 2376 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2377 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2378 0, prm->cmd->sg_cnt); 2379 return -1; 2380 } 2381 2382 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2383 { 2384 struct qla_hw_data *ha; 2385 struct qla_qpair *qpair; 2386 if (!cmd->sg_mapped) 2387 return; 2388 2389 qpair = cmd->qpair; 2390 2391 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt, 2392 cmd->dma_data_direction); 2393 cmd->sg_mapped = 0; 2394 2395 if (cmd->prot_sg_cnt) 2396 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 2397 cmd->dma_data_direction); 2398 2399 if (!cmd->ctx) 2400 return; 2401 ha = vha->hw; 2402 if (cmd->ctx_dsd_alloced) 2403 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2404 2405 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2406 } 2407 2408 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2409 uint32_t req_cnt) 2410 { 2411 uint32_t cnt; 2412 struct req_que *req = qpair->req; 2413 2414 if (req->cnt < (req_cnt + 2)) { 2415 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2416 RD_REG_DWORD_RELAXED(req->req_q_out)); 2417 2418 if (req->ring_index < cnt) 2419 req->cnt = cnt - req->ring_index; 2420 else 2421 req->cnt = req->length - (req->ring_index - cnt); 2422 2423 if (unlikely(req->cnt < (req_cnt + 2))) 2424 return -EAGAIN; 2425 } 2426 2427 req->cnt -= req_cnt; 2428 2429 return 0; 2430 } 2431 2432 /* 2433 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2434 */ 2435 static inline void *qlt_get_req_pkt(struct req_que *req) 2436 { 2437 /* Adjust ring index. */ 2438 req->ring_index++; 2439 if (req->ring_index == req->length) { 2440 req->ring_index = 0; 2441 req->ring_ptr = req->ring; 2442 } else { 2443 req->ring_ptr++; 2444 } 2445 return (cont_entry_t *)req->ring_ptr; 2446 } 2447 2448 /* ha->hardware_lock supposed to be held on entry */ 2449 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2450 { 2451 uint32_t h; 2452 int index; 2453 uint8_t found = 0; 2454 struct req_que *req = qpair->req; 2455 2456 h = req->current_outstanding_cmd; 2457 2458 for (index = 1; index < req->num_outstanding_cmds; index++) { 2459 h++; 2460 if (h == req->num_outstanding_cmds) 2461 h = 1; 2462 2463 if (h == QLA_TGT_SKIP_HANDLE) 2464 continue; 2465 2466 if (!req->outstanding_cmds[h]) { 2467 found = 1; 2468 break; 2469 } 2470 } 2471 2472 if (found) { 2473 req->current_outstanding_cmd = h; 2474 } else { 2475 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2476 "qla_target(%d): Ran out of empty cmd slots\n", 2477 qpair->vha->vp_idx); 2478 h = QLA_TGT_NULL_HANDLE; 2479 } 2480 2481 return h; 2482 } 2483 2484 /* ha->hardware_lock supposed to be held on entry */ 2485 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2486 struct qla_tgt_prm *prm) 2487 { 2488 uint32_t h; 2489 struct ctio7_to_24xx *pkt; 2490 struct atio_from_isp *atio = &prm->cmd->atio; 2491 uint16_t temp; 2492 2493 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2494 prm->pkt = pkt; 2495 memset(pkt, 0, sizeof(*pkt)); 2496 2497 pkt->entry_type = CTIO_TYPE7; 2498 pkt->entry_count = (uint8_t)prm->req_cnt; 2499 pkt->vp_index = prm->cmd->vp_idx; 2500 2501 h = qlt_make_handle(qpair); 2502 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2503 /* 2504 * CTIO type 7 from the firmware doesn't provide a way to 2505 * know the initiator's LOOP ID, hence we can't find 2506 * the session and, so, the command. 2507 */ 2508 return -EAGAIN; 2509 } else 2510 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2511 2512 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2513 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2514 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2515 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2516 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2517 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2518 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2519 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2520 temp = atio->u.isp24.attr << 9; 2521 pkt->u.status0.flags |= cpu_to_le16(temp); 2522 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2523 pkt->u.status0.ox_id = cpu_to_le16(temp); 2524 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2525 2526 return 0; 2527 } 2528 2529 /* 2530 * ha->hardware_lock supposed to be held on entry. We have already made sure 2531 * that there is sufficient amount of request entries to not drop it. 2532 */ 2533 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2534 { 2535 int cnt; 2536 uint32_t *dword_ptr; 2537 2538 /* Build continuation packets */ 2539 while (prm->seg_cnt > 0) { 2540 cont_a64_entry_t *cont_pkt64 = 2541 (cont_a64_entry_t *)qlt_get_req_pkt( 2542 prm->cmd->qpair->req); 2543 2544 /* 2545 * Make sure that from cont_pkt64 none of 2546 * 64-bit specific fields used for 32-bit 2547 * addressing. Cast to (cont_entry_t *) for 2548 * that. 2549 */ 2550 2551 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2552 2553 cont_pkt64->entry_count = 1; 2554 cont_pkt64->sys_define = 0; 2555 2556 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2557 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address; 2558 2559 /* Load continuation entry data segments */ 2560 for (cnt = 0; 2561 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2562 cnt++, prm->seg_cnt--) { 2563 *dword_ptr++ = 2564 cpu_to_le32(pci_dma_lo32 2565 (sg_dma_address(prm->sg))); 2566 *dword_ptr++ = cpu_to_le32(pci_dma_hi32 2567 (sg_dma_address(prm->sg))); 2568 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2569 2570 prm->sg = sg_next(prm->sg); 2571 } 2572 } 2573 } 2574 2575 /* 2576 * ha->hardware_lock supposed to be held on entry. We have already made sure 2577 * that there is sufficient amount of request entries to not drop it. 2578 */ 2579 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2580 { 2581 int cnt; 2582 uint32_t *dword_ptr; 2583 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2584 2585 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2586 2587 /* Setup packet address segment pointer */ 2588 dword_ptr = pkt24->u.status0.dseg_0_address; 2589 2590 /* Set total data segment count */ 2591 if (prm->seg_cnt) 2592 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2593 2594 if (prm->seg_cnt == 0) { 2595 /* No data transfer */ 2596 *dword_ptr++ = 0; 2597 *dword_ptr = 0; 2598 return; 2599 } 2600 2601 /* If scatter gather */ 2602 2603 /* Load command entry data segments */ 2604 for (cnt = 0; 2605 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2606 cnt++, prm->seg_cnt--) { 2607 *dword_ptr++ = 2608 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 2609 2610 *dword_ptr++ = cpu_to_le32(pci_dma_hi32( 2611 sg_dma_address(prm->sg))); 2612 2613 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2614 2615 prm->sg = sg_next(prm->sg); 2616 } 2617 2618 qlt_load_cont_data_segments(prm); 2619 } 2620 2621 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2622 { 2623 return cmd->bufflen > 0; 2624 } 2625 2626 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2627 { 2628 struct qla_tgt_cmd *cmd; 2629 struct scsi_qla_host *vha; 2630 2631 /* asc 0x10=dif error */ 2632 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2633 cmd = prm->cmd; 2634 vha = cmd->vha; 2635 /* ASCQ */ 2636 switch (prm->sense_buffer[13]) { 2637 case 1: 2638 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2639 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2640 "se_cmd=%p tag[%x]", 2641 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2642 cmd->atio.u.isp24.exchange_addr); 2643 break; 2644 case 2: 2645 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2646 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2647 "se_cmd=%p tag[%x]", 2648 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2649 cmd->atio.u.isp24.exchange_addr); 2650 break; 2651 case 3: 2652 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2653 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2654 "se_cmd=%p tag[%x]", 2655 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2656 cmd->atio.u.isp24.exchange_addr); 2657 break; 2658 default: 2659 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2660 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2661 "se_cmd=%p tag[%x]", 2662 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2663 cmd->atio.u.isp24.exchange_addr); 2664 break; 2665 } 2666 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2667 } 2668 } 2669 2670 /* 2671 * Called without ha->hardware_lock held 2672 */ 2673 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2674 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2675 uint32_t *full_req_cnt) 2676 { 2677 struct se_cmd *se_cmd = &cmd->se_cmd; 2678 struct qla_qpair *qpair = cmd->qpair; 2679 2680 prm->cmd = cmd; 2681 prm->tgt = cmd->tgt; 2682 prm->pkt = NULL; 2683 prm->rq_result = scsi_status; 2684 prm->sense_buffer = &cmd->sense_buffer[0]; 2685 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2686 prm->sg = NULL; 2687 prm->seg_cnt = -1; 2688 prm->req_cnt = 1; 2689 prm->residual = 0; 2690 prm->add_status_pkt = 0; 2691 prm->prot_sg = NULL; 2692 prm->prot_seg_cnt = 0; 2693 prm->tot_dsds = 0; 2694 2695 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2696 if (qlt_pci_map_calc_cnt(prm) != 0) 2697 return -EAGAIN; 2698 } 2699 2700 *full_req_cnt = prm->req_cnt; 2701 2702 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2703 prm->residual = se_cmd->residual_count; 2704 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2705 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2706 prm->residual, se_cmd->tag, 2707 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2708 cmd->bufflen, prm->rq_result); 2709 prm->rq_result |= SS_RESIDUAL_UNDER; 2710 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2711 prm->residual = se_cmd->residual_count; 2712 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2713 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2714 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2715 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2716 prm->rq_result |= SS_RESIDUAL_OVER; 2717 } 2718 2719 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2720 /* 2721 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2722 * ignored in *xmit_response() below 2723 */ 2724 if (qlt_has_data(cmd)) { 2725 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2726 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2727 (prm->rq_result != 0))) { 2728 prm->add_status_pkt = 1; 2729 (*full_req_cnt)++; 2730 } 2731 } 2732 } 2733 2734 return 0; 2735 } 2736 2737 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2738 int sending_sense) 2739 { 2740 if (cmd->qpair->enable_class_2) 2741 return 0; 2742 2743 if (sending_sense) 2744 return cmd->conf_compl_supported; 2745 else 2746 return cmd->qpair->enable_explicit_conf && 2747 cmd->conf_compl_supported; 2748 } 2749 2750 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2751 struct qla_tgt_prm *prm) 2752 { 2753 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2754 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2755 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2756 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2757 ctio->u.status0.flags |= cpu_to_le16( 2758 CTIO7_FLAGS_EXPLICIT_CONFORM | 2759 CTIO7_FLAGS_CONFORM_REQ); 2760 } 2761 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2762 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2763 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2764 int i; 2765 2766 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2767 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2768 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2769 "Skipping EXPLICIT_CONFORM and " 2770 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2771 "non GOOD status\n"); 2772 goto skip_explict_conf; 2773 } 2774 ctio->u.status1.flags |= cpu_to_le16( 2775 CTIO7_FLAGS_EXPLICIT_CONFORM | 2776 CTIO7_FLAGS_CONFORM_REQ); 2777 } 2778 skip_explict_conf: 2779 ctio->u.status1.flags &= 2780 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2781 ctio->u.status1.flags |= 2782 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2783 ctio->u.status1.scsi_status |= 2784 cpu_to_le16(SS_SENSE_LEN_VALID); 2785 ctio->u.status1.sense_length = 2786 cpu_to_le16(prm->sense_buffer_len); 2787 for (i = 0; i < prm->sense_buffer_len/4; i++) 2788 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2789 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2790 2791 qlt_print_dif_err(prm); 2792 2793 } else { 2794 ctio->u.status1.flags &= 2795 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2796 ctio->u.status1.flags |= 2797 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2798 ctio->u.status1.sense_length = 0; 2799 memset(ctio->u.status1.sense_data, 0, 2800 sizeof(ctio->u.status1.sense_data)); 2801 } 2802 2803 /* Sense with len > 24, is it possible ??? */ 2804 } 2805 2806 static inline int 2807 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2808 { 2809 switch (se_cmd->prot_op) { 2810 case TARGET_PROT_DOUT_INSERT: 2811 case TARGET_PROT_DIN_STRIP: 2812 if (ql2xenablehba_err_chk >= 1) 2813 return 1; 2814 break; 2815 case TARGET_PROT_DOUT_PASS: 2816 case TARGET_PROT_DIN_PASS: 2817 if (ql2xenablehba_err_chk >= 2) 2818 return 1; 2819 break; 2820 case TARGET_PROT_DIN_INSERT: 2821 case TARGET_PROT_DOUT_STRIP: 2822 return 1; 2823 default: 2824 break; 2825 } 2826 return 0; 2827 } 2828 2829 static inline int 2830 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2831 { 2832 switch (se_cmd->prot_op) { 2833 case TARGET_PROT_DIN_INSERT: 2834 case TARGET_PROT_DOUT_INSERT: 2835 case TARGET_PROT_DIN_STRIP: 2836 case TARGET_PROT_DOUT_STRIP: 2837 case TARGET_PROT_DIN_PASS: 2838 case TARGET_PROT_DOUT_PASS: 2839 return 1; 2840 default: 2841 return 0; 2842 } 2843 return 0; 2844 } 2845 2846 /* 2847 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2848 */ 2849 static void 2850 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2851 uint16_t *pfw_prot_opts) 2852 { 2853 struct se_cmd *se_cmd = &cmd->se_cmd; 2854 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2855 scsi_qla_host_t *vha = cmd->tgt->vha; 2856 struct qla_hw_data *ha = vha->hw; 2857 uint32_t t32 = 0; 2858 2859 /* 2860 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2861 * have been immplemented by TCM, before AppTag is avail. 2862 * Look for modesense_handlers[] 2863 */ 2864 ctx->app_tag = 0; 2865 ctx->app_tag_mask[0] = 0x0; 2866 ctx->app_tag_mask[1] = 0x0; 2867 2868 if (IS_PI_UNINIT_CAPABLE(ha)) { 2869 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2870 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2871 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2872 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2873 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2874 } 2875 2876 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2877 2878 switch (se_cmd->prot_type) { 2879 case TARGET_DIF_TYPE0_PROT: 2880 /* 2881 * No check for ql2xenablehba_err_chk, as it 2882 * would be an I/O error if hba tag generation 2883 * is not done. 2884 */ 2885 ctx->ref_tag = cpu_to_le32(lba); 2886 /* enable ALL bytes of the ref tag */ 2887 ctx->ref_tag_mask[0] = 0xff; 2888 ctx->ref_tag_mask[1] = 0xff; 2889 ctx->ref_tag_mask[2] = 0xff; 2890 ctx->ref_tag_mask[3] = 0xff; 2891 break; 2892 case TARGET_DIF_TYPE1_PROT: 2893 /* 2894 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2895 * REF tag, and 16 bit app tag. 2896 */ 2897 ctx->ref_tag = cpu_to_le32(lba); 2898 if (!qla_tgt_ref_mask_check(se_cmd) || 2899 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2900 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2901 break; 2902 } 2903 /* enable ALL bytes of the ref tag */ 2904 ctx->ref_tag_mask[0] = 0xff; 2905 ctx->ref_tag_mask[1] = 0xff; 2906 ctx->ref_tag_mask[2] = 0xff; 2907 ctx->ref_tag_mask[3] = 0xff; 2908 break; 2909 case TARGET_DIF_TYPE2_PROT: 2910 /* 2911 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2912 * tag has to match LBA in CDB + N 2913 */ 2914 ctx->ref_tag = cpu_to_le32(lba); 2915 if (!qla_tgt_ref_mask_check(se_cmd) || 2916 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2917 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2918 break; 2919 } 2920 /* enable ALL bytes of the ref tag */ 2921 ctx->ref_tag_mask[0] = 0xff; 2922 ctx->ref_tag_mask[1] = 0xff; 2923 ctx->ref_tag_mask[2] = 0xff; 2924 ctx->ref_tag_mask[3] = 0xff; 2925 break; 2926 case TARGET_DIF_TYPE3_PROT: 2927 /* For TYPE 3 protection: 16 bit GUARD only */ 2928 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2929 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2930 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2931 break; 2932 } 2933 } 2934 2935 static inline int 2936 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2937 { 2938 uint32_t *cur_dsd; 2939 uint32_t transfer_length = 0; 2940 uint32_t data_bytes; 2941 uint32_t dif_bytes; 2942 uint8_t bundling = 1; 2943 struct crc_context *crc_ctx_pkt = NULL; 2944 struct qla_hw_data *ha; 2945 struct ctio_crc2_to_fw *pkt; 2946 dma_addr_t crc_ctx_dma; 2947 uint16_t fw_prot_opts = 0; 2948 struct qla_tgt_cmd *cmd = prm->cmd; 2949 struct se_cmd *se_cmd = &cmd->se_cmd; 2950 uint32_t h; 2951 struct atio_from_isp *atio = &prm->cmd->atio; 2952 struct qla_tc_param tc; 2953 uint16_t t16; 2954 scsi_qla_host_t *vha = cmd->vha; 2955 2956 ha = vha->hw; 2957 2958 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 2959 prm->pkt = pkt; 2960 memset(pkt, 0, sizeof(*pkt)); 2961 2962 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 2963 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2964 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2965 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2966 2967 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2968 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2969 bundling = 0; 2970 2971 /* Compute dif len and adjust data len to incude protection */ 2972 data_bytes = cmd->bufflen; 2973 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2974 2975 switch (se_cmd->prot_op) { 2976 case TARGET_PROT_DIN_INSERT: 2977 case TARGET_PROT_DOUT_STRIP: 2978 transfer_length = data_bytes; 2979 if (cmd->prot_sg_cnt) 2980 data_bytes += dif_bytes; 2981 break; 2982 case TARGET_PROT_DIN_STRIP: 2983 case TARGET_PROT_DOUT_INSERT: 2984 case TARGET_PROT_DIN_PASS: 2985 case TARGET_PROT_DOUT_PASS: 2986 transfer_length = data_bytes + dif_bytes; 2987 break; 2988 default: 2989 BUG(); 2990 break; 2991 } 2992 2993 if (!qlt_hba_err_chk_enabled(se_cmd)) 2994 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2995 /* HBA error checking enabled */ 2996 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2997 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2998 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2999 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3000 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3001 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3002 } 3003 3004 switch (se_cmd->prot_op) { 3005 case TARGET_PROT_DIN_INSERT: 3006 case TARGET_PROT_DOUT_INSERT: 3007 fw_prot_opts |= PO_MODE_DIF_INSERT; 3008 break; 3009 case TARGET_PROT_DIN_STRIP: 3010 case TARGET_PROT_DOUT_STRIP: 3011 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3012 break; 3013 case TARGET_PROT_DIN_PASS: 3014 case TARGET_PROT_DOUT_PASS: 3015 fw_prot_opts |= PO_MODE_DIF_PASS; 3016 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3017 break; 3018 default:/* Normal Request */ 3019 fw_prot_opts |= PO_MODE_DIF_PASS; 3020 break; 3021 } 3022 3023 /* ---- PKT ---- */ 3024 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3025 pkt->entry_type = CTIO_CRC2; 3026 pkt->entry_count = 1; 3027 pkt->vp_index = cmd->vp_idx; 3028 3029 h = qlt_make_handle(qpair); 3030 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3031 /* 3032 * CTIO type 7 from the firmware doesn't provide a way to 3033 * know the initiator's LOOP ID, hence we can't find 3034 * the session and, so, the command. 3035 */ 3036 return -EAGAIN; 3037 } else 3038 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3039 3040 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 3041 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3042 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3043 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3044 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3045 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3046 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3047 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3048 3049 /* silence compile warning */ 3050 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3051 pkt->ox_id = cpu_to_le16(t16); 3052 3053 t16 = (atio->u.isp24.attr << 9); 3054 pkt->flags |= cpu_to_le16(t16); 3055 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3056 3057 /* Set transfer direction */ 3058 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3059 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3060 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3061 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3062 3063 pkt->dseg_count = prm->tot_dsds; 3064 /* Fibre channel byte count */ 3065 pkt->transfer_length = cpu_to_le32(transfer_length); 3066 3067 /* ----- CRC context -------- */ 3068 3069 /* Allocate CRC context from global pool */ 3070 crc_ctx_pkt = cmd->ctx = 3071 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3072 3073 if (!crc_ctx_pkt) 3074 goto crc_queuing_error; 3075 3076 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3077 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3078 3079 /* Set handle */ 3080 crc_ctx_pkt->handle = pkt->handle; 3081 3082 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3083 3084 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 3085 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 3086 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3087 3088 if (!bundling) { 3089 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 3090 } else { 3091 /* 3092 * Configure Bundling if we need to fetch interlaving 3093 * protection PCI accesses 3094 */ 3095 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3096 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3097 crc_ctx_pkt->u.bundling.dseg_count = 3098 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3099 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 3100 } 3101 3102 /* Finish the common fields of CRC pkt */ 3103 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3104 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3105 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3106 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3107 3108 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3109 tc.vha = vha; 3110 tc.blk_sz = cmd->blk_sz; 3111 tc.bufflen = cmd->bufflen; 3112 tc.sg = cmd->sg; 3113 tc.prot_sg = cmd->prot_sg; 3114 tc.ctx = crc_ctx_pkt; 3115 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3116 3117 /* Walks data segments */ 3118 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3119 3120 if (!bundling && prm->prot_seg_cnt) { 3121 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3122 prm->tot_dsds, &tc)) 3123 goto crc_queuing_error; 3124 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3125 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3126 goto crc_queuing_error; 3127 3128 if (bundling && prm->prot_seg_cnt) { 3129 /* Walks dif segments */ 3130 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3131 3132 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 3133 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3134 prm->prot_seg_cnt, &tc)) 3135 goto crc_queuing_error; 3136 } 3137 return QLA_SUCCESS; 3138 3139 crc_queuing_error: 3140 /* Cleanup will be performed by the caller */ 3141 qpair->req->outstanding_cmds[h] = NULL; 3142 3143 return QLA_FUNCTION_FAILED; 3144 } 3145 3146 /* 3147 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3148 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3149 */ 3150 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3151 uint8_t scsi_status) 3152 { 3153 struct scsi_qla_host *vha = cmd->vha; 3154 struct qla_qpair *qpair = cmd->qpair; 3155 struct ctio7_to_24xx *pkt; 3156 struct qla_tgt_prm prm; 3157 uint32_t full_req_cnt = 0; 3158 unsigned long flags = 0; 3159 int res; 3160 3161 if (cmd->sess && cmd->sess->deleted) { 3162 cmd->state = QLA_TGT_STATE_PROCESSED; 3163 if (cmd->sess->logout_completed) 3164 /* no need to terminate. FW already freed exchange. */ 3165 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3166 else 3167 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0); 3168 return 0; 3169 } 3170 3171 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3172 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3173 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3174 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3175 &cmd->se_cmd, qpair->id); 3176 3177 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3178 &full_req_cnt); 3179 if (unlikely(res != 0)) { 3180 return res; 3181 } 3182 3183 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3184 3185 if (xmit_type == QLA_TGT_XMIT_STATUS) 3186 qpair->tgt_counters.core_qla_snd_status++; 3187 else 3188 qpair->tgt_counters.core_qla_que_buf++; 3189 3190 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3191 /* 3192 * Either the port is not online or this request was from 3193 * previous life, just abort the processing. 3194 */ 3195 cmd->state = QLA_TGT_STATE_PROCESSED; 3196 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3197 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3198 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3199 vha->flags.online, qla2x00_reset_active(vha), 3200 cmd->reset_count, qpair->chip_reset); 3201 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3202 return 0; 3203 } 3204 3205 /* Does F/W have an IOCBs for this request */ 3206 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3207 if (unlikely(res)) 3208 goto out_unmap_unlock; 3209 3210 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3211 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3212 else 3213 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3214 if (unlikely(res != 0)) { 3215 qpair->req->cnt += full_req_cnt; 3216 goto out_unmap_unlock; 3217 } 3218 3219 pkt = (struct ctio7_to_24xx *)prm.pkt; 3220 3221 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3222 pkt->u.status0.flags |= 3223 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3224 CTIO7_FLAGS_STATUS_MODE_0); 3225 3226 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3227 qlt_load_data_segments(&prm); 3228 3229 if (prm.add_status_pkt == 0) { 3230 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3231 pkt->u.status0.scsi_status = 3232 cpu_to_le16(prm.rq_result); 3233 pkt->u.status0.residual = 3234 cpu_to_le32(prm.residual); 3235 pkt->u.status0.flags |= cpu_to_le16( 3236 CTIO7_FLAGS_SEND_STATUS); 3237 if (qlt_need_explicit_conf(cmd, 0)) { 3238 pkt->u.status0.flags |= 3239 cpu_to_le16( 3240 CTIO7_FLAGS_EXPLICIT_CONFORM | 3241 CTIO7_FLAGS_CONFORM_REQ); 3242 } 3243 } 3244 3245 } else { 3246 /* 3247 * We have already made sure that there is sufficient 3248 * amount of request entries to not drop HW lock in 3249 * req_pkt(). 3250 */ 3251 struct ctio7_to_24xx *ctio = 3252 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3253 qpair->req); 3254 3255 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3256 "Building additional status packet 0x%p.\n", 3257 ctio); 3258 3259 /* 3260 * T10Dif: ctio_crc2_to_fw overlay ontop of 3261 * ctio7_to_24xx 3262 */ 3263 memcpy(ctio, pkt, sizeof(*ctio)); 3264 /* reset back to CTIO7 */ 3265 ctio->entry_count = 1; 3266 ctio->entry_type = CTIO_TYPE7; 3267 ctio->dseg_count = 0; 3268 ctio->u.status1.flags &= ~cpu_to_le16( 3269 CTIO7_FLAGS_DATA_IN); 3270 3271 /* Real finish is ctio_m1's finish */ 3272 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3273 pkt->u.status0.flags |= cpu_to_le16( 3274 CTIO7_FLAGS_DONT_RET_CTIO); 3275 3276 /* qlt_24xx_init_ctio_to_isp will correct 3277 * all neccessary fields that's part of CTIO7. 3278 * There should be no residual of CTIO-CRC2 data. 3279 */ 3280 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3281 &prm); 3282 } 3283 } else 3284 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3285 3286 3287 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3288 cmd->cmd_sent_to_fw = 1; 3289 3290 /* Memory Barrier */ 3291 wmb(); 3292 if (qpair->reqq_start_iocbs) 3293 qpair->reqq_start_iocbs(qpair); 3294 else 3295 qla2x00_start_iocbs(vha, qpair->req); 3296 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3297 3298 return 0; 3299 3300 out_unmap_unlock: 3301 qlt_unmap_sg(vha, cmd); 3302 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3303 3304 return res; 3305 } 3306 EXPORT_SYMBOL(qlt_xmit_response); 3307 3308 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3309 { 3310 struct ctio7_to_24xx *pkt; 3311 struct scsi_qla_host *vha = cmd->vha; 3312 struct qla_tgt *tgt = cmd->tgt; 3313 struct qla_tgt_prm prm; 3314 unsigned long flags = 0; 3315 int res = 0; 3316 struct qla_qpair *qpair = cmd->qpair; 3317 3318 memset(&prm, 0, sizeof(prm)); 3319 prm.cmd = cmd; 3320 prm.tgt = tgt; 3321 prm.sg = NULL; 3322 prm.req_cnt = 1; 3323 3324 /* Calculate number of entries and segments required */ 3325 if (qlt_pci_map_calc_cnt(&prm) != 0) 3326 return -EAGAIN; 3327 3328 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3329 (cmd->sess && cmd->sess->deleted)) { 3330 /* 3331 * Either the port is not online or this request was from 3332 * previous life, just abort the processing. 3333 */ 3334 cmd->state = QLA_TGT_STATE_NEED_DATA; 3335 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3336 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3337 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3338 vha->flags.online, qla2x00_reset_active(vha), 3339 cmd->reset_count, qpair->chip_reset); 3340 return 0; 3341 } 3342 3343 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3344 /* Does F/W have an IOCBs for this request */ 3345 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3346 if (res != 0) 3347 goto out_unlock_free_unmap; 3348 if (cmd->se_cmd.prot_op) 3349 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3350 else 3351 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3352 3353 if (unlikely(res != 0)) { 3354 qpair->req->cnt += prm.req_cnt; 3355 goto out_unlock_free_unmap; 3356 } 3357 3358 pkt = (struct ctio7_to_24xx *)prm.pkt; 3359 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3360 CTIO7_FLAGS_STATUS_MODE_0); 3361 3362 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3363 qlt_load_data_segments(&prm); 3364 3365 cmd->state = QLA_TGT_STATE_NEED_DATA; 3366 cmd->cmd_sent_to_fw = 1; 3367 3368 /* Memory Barrier */ 3369 wmb(); 3370 if (qpair->reqq_start_iocbs) 3371 qpair->reqq_start_iocbs(qpair); 3372 else 3373 qla2x00_start_iocbs(vha, qpair->req); 3374 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3375 3376 return res; 3377 3378 out_unlock_free_unmap: 3379 qlt_unmap_sg(vha, cmd); 3380 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3381 3382 return res; 3383 } 3384 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3385 3386 3387 /* 3388 * it is assumed either hardware_lock or qpair lock is held. 3389 */ 3390 static void 3391 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3392 struct ctio_crc_from_fw *sts) 3393 { 3394 uint8_t *ap = &sts->actual_dif[0]; 3395 uint8_t *ep = &sts->expected_dif[0]; 3396 uint64_t lba = cmd->se_cmd.t_task_lba; 3397 uint8_t scsi_status, sense_key, asc, ascq; 3398 unsigned long flags; 3399 struct scsi_qla_host *vha = cmd->vha; 3400 3401 cmd->trc_flags |= TRC_DIF_ERR; 3402 3403 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3404 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3405 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3406 3407 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3408 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3409 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3410 3411 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3412 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3413 3414 scsi_status = sense_key = asc = ascq = 0; 3415 3416 /* check appl tag */ 3417 if (cmd->e_app_tag != cmd->a_app_tag) { 3418 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3419 "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]", 3420 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3421 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3422 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3423 cmd->atio.u.isp24.fcp_hdr.ox_id); 3424 3425 cmd->dif_err_code = DIF_ERR_APP; 3426 scsi_status = SAM_STAT_CHECK_CONDITION; 3427 sense_key = ABORTED_COMMAND; 3428 asc = 0x10; 3429 ascq = 0x2; 3430 } 3431 3432 /* check ref tag */ 3433 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3434 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3435 "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] ", 3436 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3437 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3438 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3439 cmd->atio.u.isp24.fcp_hdr.ox_id); 3440 3441 cmd->dif_err_code = DIF_ERR_REF; 3442 scsi_status = SAM_STAT_CHECK_CONDITION; 3443 sense_key = ABORTED_COMMAND; 3444 asc = 0x10; 3445 ascq = 0x3; 3446 goto out; 3447 } 3448 3449 /* check guard */ 3450 if (cmd->e_guard != cmd->a_guard) { 3451 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3452 "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]", 3453 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3454 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3455 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3456 cmd->atio.u.isp24.fcp_hdr.ox_id); 3457 3458 cmd->dif_err_code = DIF_ERR_GRD; 3459 scsi_status = SAM_STAT_CHECK_CONDITION; 3460 sense_key = ABORTED_COMMAND; 3461 asc = 0x10; 3462 ascq = 0x1; 3463 } 3464 out: 3465 switch (cmd->state) { 3466 case QLA_TGT_STATE_NEED_DATA: 3467 /* handle_data will load DIF error code */ 3468 cmd->state = QLA_TGT_STATE_DATA_IN; 3469 vha->hw->tgt.tgt_ops->handle_data(cmd); 3470 break; 3471 default: 3472 spin_lock_irqsave(&cmd->cmd_lock, flags); 3473 if (cmd->aborted) { 3474 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3475 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3476 break; 3477 } 3478 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3479 3480 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3481 ascq); 3482 /* assume scsi status gets out on the wire. 3483 * Will not wait for completion. 3484 */ 3485 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3486 break; 3487 } 3488 } 3489 3490 /* If hardware_lock held on entry, might drop it, then reaquire */ 3491 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3492 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3493 struct imm_ntfy_from_isp *ntfy) 3494 { 3495 struct nack_to_isp *nack; 3496 struct qla_hw_data *ha = vha->hw; 3497 request_t *pkt; 3498 int ret = 0; 3499 3500 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3501 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3502 3503 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3504 if (pkt == NULL) { 3505 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3506 "qla_target(%d): %s failed: unable to allocate " 3507 "request packet\n", vha->vp_idx, __func__); 3508 return -ENOMEM; 3509 } 3510 3511 pkt->entry_type = NOTIFY_ACK_TYPE; 3512 pkt->entry_count = 1; 3513 pkt->handle = QLA_TGT_SKIP_HANDLE; 3514 3515 nack = (struct nack_to_isp *)pkt; 3516 nack->ox_id = ntfy->ox_id; 3517 3518 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3519 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3520 nack->u.isp24.flags = ntfy->u.isp24.flags & 3521 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3522 } 3523 3524 /* terminate */ 3525 nack->u.isp24.flags |= 3526 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3527 3528 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3529 nack->u.isp24.status = ntfy->u.isp24.status; 3530 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3531 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3532 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3533 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3534 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3535 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3536 3537 qla2x00_start_iocbs(vha, vha->req); 3538 return ret; 3539 } 3540 3541 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3542 struct imm_ntfy_from_isp *imm, int ha_locked) 3543 { 3544 unsigned long flags = 0; 3545 int rc; 3546 3547 if (ha_locked) { 3548 rc = __qlt_send_term_imm_notif(vha, imm); 3549 3550 #if 0 /* Todo */ 3551 if (rc == -ENOMEM) 3552 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3553 #else 3554 if (rc) { 3555 } 3556 #endif 3557 goto done; 3558 } 3559 3560 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3561 rc = __qlt_send_term_imm_notif(vha, imm); 3562 3563 #if 0 /* Todo */ 3564 if (rc == -ENOMEM) 3565 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3566 #endif 3567 3568 done: 3569 if (!ha_locked) 3570 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3571 } 3572 3573 /* 3574 * If hardware_lock held on entry, might drop it, then reaquire 3575 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3576 */ 3577 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3578 struct qla_tgt_cmd *cmd, 3579 struct atio_from_isp *atio) 3580 { 3581 struct scsi_qla_host *vha = qpair->vha; 3582 struct ctio7_to_24xx *ctio24; 3583 struct qla_hw_data *ha = vha->hw; 3584 request_t *pkt; 3585 int ret = 0; 3586 uint16_t temp; 3587 3588 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3589 3590 if (cmd) 3591 vha = cmd->vha; 3592 3593 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3594 if (pkt == NULL) { 3595 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3596 "qla_target(%d): %s failed: unable to allocate " 3597 "request packet\n", vha->vp_idx, __func__); 3598 return -ENOMEM; 3599 } 3600 3601 if (cmd != NULL) { 3602 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3603 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3604 "qla_target(%d): Terminating cmd %p with " 3605 "incorrect state %d\n", vha->vp_idx, cmd, 3606 cmd->state); 3607 } else 3608 ret = 1; 3609 } 3610 3611 qpair->tgt_counters.num_term_xchg_sent++; 3612 pkt->entry_count = 1; 3613 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3614 3615 ctio24 = (struct ctio7_to_24xx *)pkt; 3616 ctio24->entry_type = CTIO_TYPE7; 3617 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3618 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3619 ctio24->vp_index = vha->vp_idx; 3620 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3621 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3622 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3623 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3624 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3625 CTIO7_FLAGS_TERMINATE; 3626 ctio24->u.status1.flags = cpu_to_le16(temp); 3627 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3628 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3629 3630 /* Memory Barrier */ 3631 wmb(); 3632 if (qpair->reqq_start_iocbs) 3633 qpair->reqq_start_iocbs(qpair); 3634 else 3635 qla2x00_start_iocbs(vha, qpair->req); 3636 return ret; 3637 } 3638 3639 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3640 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3641 int ul_abort) 3642 { 3643 struct scsi_qla_host *vha; 3644 unsigned long flags = 0; 3645 int rc; 3646 3647 /* why use different vha? NPIV */ 3648 if (cmd) 3649 vha = cmd->vha; 3650 else 3651 vha = qpair->vha; 3652 3653 if (ha_locked) { 3654 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3655 if (rc == -ENOMEM) 3656 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3657 goto done; 3658 } 3659 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3660 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3661 if (rc == -ENOMEM) 3662 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3663 3664 done: 3665 if (cmd && !ul_abort && !cmd->aborted) { 3666 if (cmd->sg_mapped) 3667 qlt_unmap_sg(vha, cmd); 3668 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3669 } 3670 3671 if (!ha_locked) 3672 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3673 3674 return; 3675 } 3676 3677 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3678 { 3679 struct list_head free_list; 3680 struct qla_tgt_cmd *cmd, *tcmd; 3681 3682 vha->hw->tgt.leak_exchg_thresh_hold = 3683 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3684 3685 cmd = tcmd = NULL; 3686 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3687 INIT_LIST_HEAD(&free_list); 3688 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3689 3690 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3691 list_del(&cmd->cmd_list); 3692 /* This cmd was never sent to TCM. There is no need 3693 * to schedule free or call free_cmd 3694 */ 3695 qlt_free_cmd(cmd); 3696 vha->hw->tgt.num_qfull_cmds_alloc--; 3697 } 3698 } 3699 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3700 } 3701 3702 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3703 { 3704 uint32_t total_leaked; 3705 3706 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3707 3708 if (vha->hw->tgt.leak_exchg_thresh_hold && 3709 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3710 3711 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3712 "Chip reset due to exchange starvation: %d/%d.\n", 3713 total_leaked, vha->hw->cur_fw_xcb_count); 3714 3715 if (IS_P3P_TYPE(vha->hw)) 3716 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3717 else 3718 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3719 qla2xxx_wake_dpc(vha); 3720 } 3721 3722 } 3723 3724 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3725 { 3726 struct qla_tgt *tgt = cmd->tgt; 3727 struct scsi_qla_host *vha = tgt->vha; 3728 struct se_cmd *se_cmd = &cmd->se_cmd; 3729 unsigned long flags; 3730 3731 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3732 "qla_target(%d): terminating exchange for aborted cmd=%p " 3733 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3734 se_cmd->tag); 3735 3736 spin_lock_irqsave(&cmd->cmd_lock, flags); 3737 if (cmd->aborted) { 3738 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3739 /* 3740 * It's normal to see 2 calls in this path: 3741 * 1) XFER Rdy completion + CMD_T_ABORT 3742 * 2) TCM TMR - drain_state_list 3743 */ 3744 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3745 "multiple abort. %p transport_state %x, t_state %x, " 3746 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3747 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3748 return EIO; 3749 } 3750 cmd->aborted = 1; 3751 cmd->trc_flags |= TRC_ABORT; 3752 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3753 3754 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3755 return 0; 3756 } 3757 EXPORT_SYMBOL(qlt_abort_cmd); 3758 3759 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3760 { 3761 struct fc_port *sess = cmd->sess; 3762 3763 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3764 "%s: se_cmd[%p] ox_id %04x\n", 3765 __func__, &cmd->se_cmd, 3766 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3767 3768 BUG_ON(cmd->cmd_in_wq); 3769 3770 if (cmd->sg_mapped) 3771 qlt_unmap_sg(cmd->vha, cmd); 3772 3773 if (!cmd->q_full) 3774 qlt_decr_num_pend_cmds(cmd->vha); 3775 3776 BUG_ON(cmd->sg_mapped); 3777 cmd->jiffies_at_free = get_jiffies_64(); 3778 if (unlikely(cmd->free_sg)) 3779 kfree(cmd->sg); 3780 3781 if (!sess || !sess->se_sess) { 3782 WARN_ON(1); 3783 return; 3784 } 3785 cmd->jiffies_at_free = get_jiffies_64(); 3786 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3787 } 3788 EXPORT_SYMBOL(qlt_free_cmd); 3789 3790 /* 3791 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3792 */ 3793 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3794 struct qla_tgt_cmd *cmd, uint32_t status) 3795 { 3796 int term = 0; 3797 struct scsi_qla_host *vha = qpair->vha; 3798 3799 if (cmd->se_cmd.prot_op) 3800 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3801 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3802 "se_cmd=%p tag[%x] op %#x/%s", 3803 cmd->lba, cmd->lba, 3804 cmd->num_blks, &cmd->se_cmd, 3805 cmd->atio.u.isp24.exchange_addr, 3806 cmd->se_cmd.prot_op, 3807 prot_op_str(cmd->se_cmd.prot_op)); 3808 3809 if (ctio != NULL) { 3810 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3811 term = !(c->flags & 3812 cpu_to_le16(OF_TERM_EXCH)); 3813 } else 3814 term = 1; 3815 3816 if (term) 3817 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3818 3819 return term; 3820 } 3821 3822 3823 /* ha->hardware_lock supposed to be held on entry */ 3824 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3825 struct rsp_que *rsp, uint32_t handle, void *ctio) 3826 { 3827 struct qla_tgt_cmd *cmd = NULL; 3828 struct req_que *req; 3829 int qid = GET_QID(handle); 3830 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3831 3832 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3833 return NULL; 3834 3835 if (qid == rsp->req->id) { 3836 req = rsp->req; 3837 } else if (vha->hw->req_q_map[qid]) { 3838 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3839 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3840 vha->vp_idx, rsp->id, handle); 3841 req = vha->hw->req_q_map[qid]; 3842 } else { 3843 return NULL; 3844 } 3845 3846 h &= QLA_CMD_HANDLE_MASK; 3847 3848 if (h != QLA_TGT_NULL_HANDLE) { 3849 if (unlikely(h >= req->num_outstanding_cmds)) { 3850 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3851 "qla_target(%d): Wrong handle %x received\n", 3852 vha->vp_idx, handle); 3853 return NULL; 3854 } 3855 3856 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h]; 3857 if (unlikely(cmd == NULL)) { 3858 ql_dbg(ql_dbg_async, vha, 0xe053, 3859 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3860 vha->vp_idx, handle, req->id, rsp->id); 3861 return NULL; 3862 } 3863 req->outstanding_cmds[h] = NULL; 3864 } else if (ctio != NULL) { 3865 /* We can't get loop ID from CTIO7 */ 3866 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3867 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3868 "support NULL handles\n", vha->vp_idx); 3869 return NULL; 3870 } 3871 3872 return cmd; 3873 } 3874 3875 /* hardware_lock should be held by caller. */ 3876 void 3877 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3878 { 3879 struct qla_hw_data *ha = vha->hw; 3880 3881 if (cmd->sg_mapped) 3882 qlt_unmap_sg(vha, cmd); 3883 3884 /* TODO: fix debug message type and ids. */ 3885 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3886 ql_dbg(ql_dbg_io, vha, 0xff00, 3887 "HOST-ABORT: state=PROCESSED.\n"); 3888 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3889 cmd->write_data_transferred = 0; 3890 cmd->state = QLA_TGT_STATE_DATA_IN; 3891 3892 ql_dbg(ql_dbg_io, vha, 0xff01, 3893 "HOST-ABORT: state=DATA_IN.\n"); 3894 3895 ha->tgt.tgt_ops->handle_data(cmd); 3896 return; 3897 } else { 3898 ql_dbg(ql_dbg_io, vha, 0xff03, 3899 "HOST-ABORT: state=BAD(%d).\n", 3900 cmd->state); 3901 dump_stack(); 3902 } 3903 3904 cmd->trc_flags |= TRC_FLUSH; 3905 ha->tgt.tgt_ops->free_cmd(cmd); 3906 } 3907 3908 /* 3909 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3910 */ 3911 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3912 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3913 { 3914 struct qla_hw_data *ha = vha->hw; 3915 struct se_cmd *se_cmd; 3916 struct qla_tgt_cmd *cmd; 3917 struct qla_qpair *qpair = rsp->qpair; 3918 3919 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3920 /* That could happen only in case of an error/reset/abort */ 3921 if (status != CTIO_SUCCESS) { 3922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3923 "Intermediate CTIO received" 3924 " (status %x)\n", status); 3925 } 3926 return; 3927 } 3928 3929 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3930 if (cmd == NULL) 3931 return; 3932 3933 se_cmd = &cmd->se_cmd; 3934 cmd->cmd_sent_to_fw = 0; 3935 3936 qlt_unmap_sg(vha, cmd); 3937 3938 if (unlikely(status != CTIO_SUCCESS)) { 3939 switch (status & 0xFFFF) { 3940 case CTIO_LIP_RESET: 3941 case CTIO_TARGET_RESET: 3942 case CTIO_ABORTED: 3943 /* driver request abort via Terminate exchange */ 3944 case CTIO_TIMEOUT: 3945 case CTIO_INVALID_RX_ID: 3946 /* They are OK */ 3947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3948 "qla_target(%d): CTIO with " 3949 "status %#x received, state %x, se_cmd %p, " 3950 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3951 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3952 status, cmd->state, se_cmd); 3953 break; 3954 3955 case CTIO_PORT_LOGGED_OUT: 3956 case CTIO_PORT_UNAVAILABLE: 3957 { 3958 int logged_out = 3959 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3960 3961 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3962 "qla_target(%d): CTIO with %s status %x " 3963 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3964 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3965 status, cmd->state, se_cmd); 3966 3967 if (logged_out && cmd->sess) { 3968 /* 3969 * Session is already logged out, but we need 3970 * to notify initiator, who's not aware of this 3971 */ 3972 cmd->sess->logout_on_delete = 0; 3973 cmd->sess->send_els_logo = 1; 3974 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3975 "%s %d %8phC post del sess\n", 3976 __func__, __LINE__, cmd->sess->port_name); 3977 3978 qlt_schedule_sess_for_deletion(cmd->sess); 3979 } 3980 break; 3981 } 3982 case CTIO_DIF_ERROR: { 3983 struct ctio_crc_from_fw *crc = 3984 (struct ctio_crc_from_fw *)ctio; 3985 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3986 "qla_target(%d): CTIO with DIF_ERROR status %x " 3987 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3988 "expect_dif[0x%llx]\n", 3989 vha->vp_idx, status, cmd->state, se_cmd, 3990 *((u64 *)&crc->actual_dif[0]), 3991 *((u64 *)&crc->expected_dif[0])); 3992 3993 qlt_handle_dif_error(qpair, cmd, ctio); 3994 return; 3995 } 3996 default: 3997 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3998 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3999 vha->vp_idx, status, cmd->state, se_cmd); 4000 break; 4001 } 4002 4003 4004 /* "cmd->aborted" means 4005 * cmd is already aborted/terminated, we don't 4006 * need to terminate again. The exchange is already 4007 * cleaned up/freed at FW level. Just cleanup at driver 4008 * level. 4009 */ 4010 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4011 (!cmd->aborted)) { 4012 cmd->trc_flags |= TRC_CTIO_ERR; 4013 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4014 return; 4015 } 4016 } 4017 4018 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4019 cmd->trc_flags |= TRC_CTIO_DONE; 4020 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4021 cmd->state = QLA_TGT_STATE_DATA_IN; 4022 4023 if (status == CTIO_SUCCESS) 4024 cmd->write_data_transferred = 1; 4025 4026 ha->tgt.tgt_ops->handle_data(cmd); 4027 return; 4028 } else if (cmd->aborted) { 4029 cmd->trc_flags |= TRC_CTIO_ABORTED; 4030 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4031 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4032 } else { 4033 cmd->trc_flags |= TRC_CTIO_STRANGE; 4034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4035 "qla_target(%d): A command in state (%d) should " 4036 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4037 } 4038 4039 if (unlikely(status != CTIO_SUCCESS) && 4040 !cmd->aborted) { 4041 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4042 dump_stack(); 4043 } 4044 4045 ha->tgt.tgt_ops->free_cmd(cmd); 4046 } 4047 4048 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4049 uint8_t task_codes) 4050 { 4051 int fcp_task_attr; 4052 4053 switch (task_codes) { 4054 case ATIO_SIMPLE_QUEUE: 4055 fcp_task_attr = TCM_SIMPLE_TAG; 4056 break; 4057 case ATIO_HEAD_OF_QUEUE: 4058 fcp_task_attr = TCM_HEAD_TAG; 4059 break; 4060 case ATIO_ORDERED_QUEUE: 4061 fcp_task_attr = TCM_ORDERED_TAG; 4062 break; 4063 case ATIO_ACA_QUEUE: 4064 fcp_task_attr = TCM_ACA_TAG; 4065 break; 4066 case ATIO_UNTAGGED: 4067 fcp_task_attr = TCM_SIMPLE_TAG; 4068 break; 4069 default: 4070 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4071 "qla_target: unknown task code %x, use ORDERED instead\n", 4072 task_codes); 4073 fcp_task_attr = TCM_ORDERED_TAG; 4074 break; 4075 } 4076 4077 return fcp_task_attr; 4078 } 4079 4080 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 4081 uint8_t *); 4082 /* 4083 * Process context for I/O path into tcm_qla2xxx code 4084 */ 4085 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4086 { 4087 scsi_qla_host_t *vha = cmd->vha; 4088 struct qla_hw_data *ha = vha->hw; 4089 struct fc_port *sess = cmd->sess; 4090 struct atio_from_isp *atio = &cmd->atio; 4091 unsigned char *cdb; 4092 unsigned long flags; 4093 uint32_t data_length; 4094 int ret, fcp_task_attr, data_dir, bidi = 0; 4095 struct qla_qpair *qpair = cmd->qpair; 4096 4097 cmd->cmd_in_wq = 0; 4098 cmd->trc_flags |= TRC_DO_WORK; 4099 4100 if (cmd->aborted) { 4101 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4102 "cmd with tag %u is aborted\n", 4103 cmd->atio.u.isp24.exchange_addr); 4104 goto out_term; 4105 } 4106 4107 spin_lock_init(&cmd->cmd_lock); 4108 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4109 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4110 4111 if (atio->u.isp24.fcp_cmnd.rddata && 4112 atio->u.isp24.fcp_cmnd.wrdata) { 4113 bidi = 1; 4114 data_dir = DMA_TO_DEVICE; 4115 } else if (atio->u.isp24.fcp_cmnd.rddata) 4116 data_dir = DMA_FROM_DEVICE; 4117 else if (atio->u.isp24.fcp_cmnd.wrdata) 4118 data_dir = DMA_TO_DEVICE; 4119 else 4120 data_dir = DMA_NONE; 4121 4122 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4123 atio->u.isp24.fcp_cmnd.task_attr); 4124 data_length = get_datalen_for_atio(atio); 4125 4126 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4127 fcp_task_attr, data_dir, bidi); 4128 if (ret != 0) 4129 goto out_term; 4130 /* 4131 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 4132 */ 4133 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4134 ha->tgt.tgt_ops->put_sess(sess); 4135 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4136 return; 4137 4138 out_term: 4139 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4140 /* 4141 * cmd has not sent to target yet, so pass NULL as the second 4142 * argument to qlt_send_term_exchange() and free the memory here. 4143 */ 4144 cmd->trc_flags |= TRC_DO_WORK_ERR; 4145 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4146 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4147 4148 qlt_decr_num_pend_cmds(vha); 4149 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 4150 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4151 4152 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4153 ha->tgt.tgt_ops->put_sess(sess); 4154 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4155 } 4156 4157 static void qlt_do_work(struct work_struct *work) 4158 { 4159 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4160 scsi_qla_host_t *vha = cmd->vha; 4161 unsigned long flags; 4162 4163 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4164 list_del(&cmd->cmd_list); 4165 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4166 4167 __qlt_do_work(cmd); 4168 } 4169 4170 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4171 { 4172 unsigned long flags; 4173 struct qla_hw_data *ha = vha->hw; 4174 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4175 void *node; 4176 u64 key = 0; 4177 4178 ql_log(ql_log_info, vha, 0x706c, 4179 "User update Number of Active Qpairs %d\n", 4180 ha->tgt.num_act_qpairs); 4181 4182 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4183 4184 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4185 btree_remove64(&tgt->lun_qpair_map, key); 4186 4187 ha->base_qpair->lun_cnt = 0; 4188 for (key = 0; key < ha->max_qpairs; key++) 4189 if (ha->queue_pair_map[key]) 4190 ha->queue_pair_map[key]->lun_cnt = 0; 4191 4192 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4193 } 4194 4195 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4196 struct qla_tgt_cmd *cmd) 4197 { 4198 struct qla_qpair *qpair, *qp; 4199 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4200 struct qla_qpair_hint *h; 4201 4202 if (vha->flags.qpairs_available) { 4203 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4204 if (unlikely(!h)) { 4205 /* spread lun to qpair ratio evently */ 4206 int lcnt = 0, rc; 4207 struct scsi_qla_host *base_vha = 4208 pci_get_drvdata(vha->hw->pdev); 4209 4210 qpair = vha->hw->base_qpair; 4211 if (qpair->lun_cnt == 0) { 4212 qpair->lun_cnt++; 4213 h = qla_qpair_to_hint(tgt, qpair); 4214 BUG_ON(!h); 4215 rc = btree_insert64(&tgt->lun_qpair_map, 4216 cmd->unpacked_lun, h, GFP_ATOMIC); 4217 if (rc) { 4218 qpair->lun_cnt--; 4219 ql_log(ql_log_info, vha, 0xd037, 4220 "Unable to insert lun %llx into lun_qpair_map\n", 4221 cmd->unpacked_lun); 4222 } 4223 goto out; 4224 } else { 4225 lcnt = qpair->lun_cnt; 4226 } 4227 4228 h = NULL; 4229 list_for_each_entry(qp, &base_vha->qp_list, 4230 qp_list_elem) { 4231 if (qp->lun_cnt == 0) { 4232 qp->lun_cnt++; 4233 h = qla_qpair_to_hint(tgt, qp); 4234 BUG_ON(!h); 4235 rc = btree_insert64(&tgt->lun_qpair_map, 4236 cmd->unpacked_lun, h, GFP_ATOMIC); 4237 if (rc) { 4238 qp->lun_cnt--; 4239 ql_log(ql_log_info, vha, 0xd038, 4240 "Unable to insert lun %llx into lun_qpair_map\n", 4241 cmd->unpacked_lun); 4242 } 4243 qpair = qp; 4244 goto out; 4245 } else { 4246 if (qp->lun_cnt < lcnt) { 4247 lcnt = qp->lun_cnt; 4248 qpair = qp; 4249 continue; 4250 } 4251 } 4252 } 4253 BUG_ON(!qpair); 4254 qpair->lun_cnt++; 4255 h = qla_qpair_to_hint(tgt, qpair); 4256 BUG_ON(!h); 4257 rc = btree_insert64(&tgt->lun_qpair_map, 4258 cmd->unpacked_lun, h, GFP_ATOMIC); 4259 if (rc) { 4260 qpair->lun_cnt--; 4261 ql_log(ql_log_info, vha, 0xd039, 4262 "Unable to insert lun %llx into lun_qpair_map\n", 4263 cmd->unpacked_lun); 4264 } 4265 } 4266 } else { 4267 h = &tgt->qphints[0]; 4268 } 4269 out: 4270 cmd->qpair = h->qpair; 4271 cmd->se_cmd.cpuid = h->cpuid; 4272 } 4273 4274 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4275 struct fc_port *sess, 4276 struct atio_from_isp *atio) 4277 { 4278 struct se_session *se_sess = sess->se_sess; 4279 struct qla_tgt_cmd *cmd; 4280 int tag; 4281 4282 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 4283 if (tag < 0) 4284 return NULL; 4285 4286 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4287 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4288 cmd->cmd_type = TYPE_TGT_CMD; 4289 memcpy(&cmd->atio, atio, sizeof(*atio)); 4290 cmd->state = QLA_TGT_STATE_NEW; 4291 cmd->tgt = vha->vha_tgt.qla_tgt; 4292 qlt_incr_num_pend_cmds(vha); 4293 cmd->vha = vha; 4294 cmd->se_cmd.map_tag = tag; 4295 cmd->sess = sess; 4296 cmd->loop_id = sess->loop_id; 4297 cmd->conf_compl_supported = sess->conf_compl_supported; 4298 4299 cmd->trc_flags = 0; 4300 cmd->jiffies_at_alloc = get_jiffies_64(); 4301 4302 cmd->unpacked_lun = scsilun_to_int( 4303 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4304 qlt_assign_qpair(vha, cmd); 4305 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4306 cmd->vp_idx = vha->vp_idx; 4307 4308 return cmd; 4309 } 4310 4311 /* ha->hardware_lock supposed to be held on entry */ 4312 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4313 struct atio_from_isp *atio) 4314 { 4315 struct qla_hw_data *ha = vha->hw; 4316 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4317 struct fc_port *sess; 4318 struct qla_tgt_cmd *cmd; 4319 unsigned long flags; 4320 port_id_t id; 4321 4322 if (unlikely(tgt->tgt_stop)) { 4323 ql_dbg(ql_dbg_io, vha, 0x3061, 4324 "New command while device %p is shutting down\n", tgt); 4325 return -ENODEV; 4326 } 4327 4328 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 4329 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 4330 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 4331 if (IS_SW_RESV_ADDR(id)) 4332 return -EBUSY; 4333 4334 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4335 if (unlikely(!sess)) 4336 return -EFAULT; 4337 4338 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4339 * session deletion, but it's still in sess_del_work wq */ 4340 if (sess->deleted) { 4341 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4342 "New command while old session %p is being deleted\n", 4343 sess); 4344 return -EFAULT; 4345 } 4346 4347 /* 4348 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4349 */ 4350 if (!kref_get_unless_zero(&sess->sess_kref)) { 4351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4352 "%s: kref_get fail, %8phC oxid %x \n", 4353 __func__, sess->port_name, 4354 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4355 return -EFAULT; 4356 } 4357 4358 cmd = qlt_get_tag(vha, sess, atio); 4359 if (!cmd) { 4360 ql_dbg(ql_dbg_io, vha, 0x3062, 4361 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4362 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4363 ha->tgt.tgt_ops->put_sess(sess); 4364 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4365 return -EBUSY; 4366 } 4367 4368 cmd->cmd_in_wq = 1; 4369 cmd->trc_flags |= TRC_NEW_CMD; 4370 4371 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4372 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4373 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4374 4375 INIT_WORK(&cmd->work, qlt_do_work); 4376 if (vha->flags.qpairs_available) { 4377 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4378 } else if (ha->msix_count) { 4379 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4380 queue_work_on(smp_processor_id(), qla_tgt_wq, 4381 &cmd->work); 4382 else 4383 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4384 &cmd->work); 4385 } else { 4386 queue_work(qla_tgt_wq, &cmd->work); 4387 } 4388 4389 return 0; 4390 } 4391 4392 /* ha->hardware_lock supposed to be held on entry */ 4393 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4394 int fn, void *iocb, int flags) 4395 { 4396 struct scsi_qla_host *vha = sess->vha; 4397 struct qla_hw_data *ha = vha->hw; 4398 struct qla_tgt_mgmt_cmd *mcmd; 4399 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4400 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4401 4402 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4403 if (!mcmd) { 4404 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4405 "qla_target(%d): Allocation of management " 4406 "command failed, some commands and their data could " 4407 "leak\n", vha->vp_idx); 4408 return -ENOMEM; 4409 } 4410 memset(mcmd, 0, sizeof(*mcmd)); 4411 mcmd->sess = sess; 4412 4413 if (iocb) { 4414 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4415 sizeof(mcmd->orig_iocb.imm_ntfy)); 4416 } 4417 mcmd->tmr_func = fn; 4418 mcmd->flags = flags; 4419 mcmd->reset_count = ha->base_qpair->chip_reset; 4420 mcmd->qpair = h->qpair; 4421 mcmd->vha = vha; 4422 mcmd->se_cmd.cpuid = h->cpuid; 4423 mcmd->unpacked_lun = lun; 4424 4425 switch (fn) { 4426 case QLA_TGT_LUN_RESET: 4427 case QLA_TGT_CLEAR_TS: 4428 case QLA_TGT_ABORT_TS: 4429 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4430 /* drop through */ 4431 case QLA_TGT_CLEAR_ACA: 4432 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4433 mcmd->qpair = h->qpair; 4434 mcmd->se_cmd.cpuid = h->cpuid; 4435 break; 4436 4437 case QLA_TGT_TARGET_RESET: 4438 case QLA_TGT_NEXUS_LOSS_SESS: 4439 case QLA_TGT_NEXUS_LOSS: 4440 case QLA_TGT_ABORT_ALL: 4441 default: 4442 /* no-op */ 4443 break; 4444 } 4445 4446 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4447 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4448 &mcmd->work); 4449 4450 return 0; 4451 } 4452 4453 /* ha->hardware_lock supposed to be held on entry */ 4454 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4455 { 4456 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4457 struct qla_hw_data *ha = vha->hw; 4458 struct fc_port *sess; 4459 u64 unpacked_lun; 4460 int fn; 4461 unsigned long flags; 4462 4463 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4464 4465 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4466 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4467 a->u.isp24.fcp_hdr.s_id); 4468 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4469 4470 unpacked_lun = 4471 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4472 4473 if (sess == NULL || sess->deleted) 4474 return -EFAULT; 4475 4476 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4477 } 4478 4479 /* ha->hardware_lock supposed to be held on entry */ 4480 static int __qlt_abort_task(struct scsi_qla_host *vha, 4481 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4482 { 4483 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4484 struct qla_hw_data *ha = vha->hw; 4485 struct qla_tgt_mgmt_cmd *mcmd; 4486 u64 unpacked_lun; 4487 int rc; 4488 4489 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4490 if (mcmd == NULL) { 4491 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4492 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4493 vha->vp_idx, __func__); 4494 return -ENOMEM; 4495 } 4496 memset(mcmd, 0, sizeof(*mcmd)); 4497 4498 mcmd->sess = sess; 4499 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4500 sizeof(mcmd->orig_iocb.imm_ntfy)); 4501 4502 unpacked_lun = 4503 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4504 mcmd->reset_count = ha->base_qpair->chip_reset; 4505 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4506 mcmd->qpair = ha->base_qpair; 4507 4508 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4509 le16_to_cpu(iocb->u.isp2x.seq_id)); 4510 if (rc != 0) { 4511 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4512 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4513 vha->vp_idx, rc); 4514 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4515 return -EFAULT; 4516 } 4517 4518 return 0; 4519 } 4520 4521 /* ha->hardware_lock supposed to be held on entry */ 4522 static int qlt_abort_task(struct scsi_qla_host *vha, 4523 struct imm_ntfy_from_isp *iocb) 4524 { 4525 struct qla_hw_data *ha = vha->hw; 4526 struct fc_port *sess; 4527 int loop_id; 4528 unsigned long flags; 4529 4530 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4531 4532 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4533 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4534 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4535 4536 if (sess == NULL) { 4537 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4538 "qla_target(%d): task abort for unexisting " 4539 "session\n", vha->vp_idx); 4540 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4541 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4542 } 4543 4544 return __qlt_abort_task(vha, iocb, sess); 4545 } 4546 4547 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4548 { 4549 if (rc != MBS_COMMAND_COMPLETE) { 4550 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4551 "%s: se_sess %p / sess %p from" 4552 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4553 " LOGO failed: %#x\n", 4554 __func__, 4555 fcport->se_sess, 4556 fcport, 4557 fcport->port_name, fcport->loop_id, 4558 fcport->d_id.b.domain, fcport->d_id.b.area, 4559 fcport->d_id.b.al_pa, rc); 4560 } 4561 4562 fcport->logout_completed = 1; 4563 } 4564 4565 /* 4566 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4567 * 4568 * Schedules sessions with matching port_id/loop_id but different wwn for 4569 * deletion. Returns existing session with matching wwn if present. 4570 * Null otherwise. 4571 */ 4572 struct fc_port * 4573 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4574 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4575 { 4576 struct fc_port *sess = NULL, *other_sess; 4577 uint64_t other_wwn; 4578 4579 *conflict_sess = NULL; 4580 4581 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4582 4583 other_wwn = wwn_to_u64(other_sess->port_name); 4584 4585 if (wwn == other_wwn) { 4586 WARN_ON(sess); 4587 sess = other_sess; 4588 continue; 4589 } 4590 4591 /* find other sess with nport_id collision */ 4592 if (port_id.b24 == other_sess->d_id.b24) { 4593 if (loop_id != other_sess->loop_id) { 4594 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4595 "Invalidating sess %p loop_id %d wwn %llx.\n", 4596 other_sess, other_sess->loop_id, other_wwn); 4597 4598 /* 4599 * logout_on_delete is set by default, but another 4600 * session that has the same s_id/loop_id combo 4601 * might have cleared it when requested this session 4602 * deletion, so don't touch it 4603 */ 4604 qlt_schedule_sess_for_deletion(other_sess); 4605 } else { 4606 /* 4607 * Another wwn used to have our s_id/loop_id 4608 * kill the session, but don't free the loop_id 4609 */ 4610 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, 4611 "Invalidating sess %p loop_id %d wwn %llx.\n", 4612 other_sess, other_sess->loop_id, other_wwn); 4613 4614 other_sess->keep_nport_handle = 1; 4615 if (other_sess->disc_state != DSC_DELETED) 4616 *conflict_sess = other_sess; 4617 qlt_schedule_sess_for_deletion(other_sess); 4618 } 4619 continue; 4620 } 4621 4622 /* find other sess with nport handle collision */ 4623 if ((loop_id == other_sess->loop_id) && 4624 (loop_id != FC_NO_LOOP_ID)) { 4625 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4626 "Invalidating sess %p loop_id %d wwn %llx.\n", 4627 other_sess, other_sess->loop_id, other_wwn); 4628 4629 /* Same loop_id but different s_id 4630 * Ok to kill and logout */ 4631 qlt_schedule_sess_for_deletion(other_sess); 4632 } 4633 } 4634 4635 return sess; 4636 } 4637 4638 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4639 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4640 { 4641 struct qla_tgt_sess_op *op; 4642 struct qla_tgt_cmd *cmd; 4643 uint32_t key; 4644 int count = 0; 4645 unsigned long flags; 4646 4647 key = (((u32)s_id->b.domain << 16) | 4648 ((u32)s_id->b.area << 8) | 4649 ((u32)s_id->b.al_pa)); 4650 4651 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4652 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4653 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4654 4655 if (op_key == key) { 4656 op->aborted = true; 4657 count++; 4658 } 4659 } 4660 4661 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4662 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4663 if (op_key == key) { 4664 op->aborted = true; 4665 count++; 4666 } 4667 } 4668 4669 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4670 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4671 if (cmd_key == key) { 4672 cmd->aborted = 1; 4673 count++; 4674 } 4675 } 4676 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4677 4678 return count; 4679 } 4680 4681 static int qlt_handle_login(struct scsi_qla_host *vha, 4682 struct imm_ntfy_from_isp *iocb) 4683 { 4684 struct fc_port *sess = NULL, *conflict_sess = NULL; 4685 uint64_t wwn; 4686 port_id_t port_id; 4687 uint16_t loop_id, wd3_lo; 4688 int res = 0; 4689 struct qlt_plogi_ack_t *pla; 4690 unsigned long flags; 4691 4692 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4693 4694 port_id.b.domain = iocb->u.isp24.port_id[2]; 4695 port_id.b.area = iocb->u.isp24.port_id[1]; 4696 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4697 port_id.b.rsvd_1 = 0; 4698 4699 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4700 4701 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4702 abort_cmds_for_s_id(vha, &port_id); 4703 4704 if (wwn) { 4705 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4706 sess = qlt_find_sess_invalidate_other(vha, wwn, 4707 port_id, loop_id, &conflict_sess); 4708 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4709 } 4710 4711 if (IS_SW_RESV_ADDR(port_id)) { 4712 res = 1; 4713 goto out; 4714 } 4715 4716 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4717 if (!pla) { 4718 qlt_send_term_imm_notif(vha, iocb, 1); 4719 goto out; 4720 } 4721 4722 if (conflict_sess) { 4723 conflict_sess->login_gen++; 4724 qlt_plogi_ack_link(vha, pla, conflict_sess, 4725 QLT_PLOGI_LINK_CONFLICT); 4726 } 4727 4728 if (!sess) { 4729 pla->ref_count++; 4730 ql_dbg(ql_dbg_disc, vha, 0xffff, 4731 "%s %d %8phC post new sess\n", 4732 __func__, __LINE__, iocb->u.isp24.port_name); 4733 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4734 qla24xx_post_newsess_work(vha, &port_id, 4735 iocb->u.isp24.port_name, 4736 iocb->u.isp24.u.plogi.node_name, 4737 pla, FC4_TYPE_UNKNOWN); 4738 else 4739 qla24xx_post_newsess_work(vha, &port_id, 4740 iocb->u.isp24.port_name, NULL, 4741 pla, FC4_TYPE_UNKNOWN); 4742 4743 goto out; 4744 } 4745 4746 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4747 sess->d_id = port_id; 4748 sess->login_gen++; 4749 4750 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4751 sess->fw_login_state = DSC_LS_PRLI_PEND; 4752 sess->local = 0; 4753 sess->loop_id = loop_id; 4754 sess->d_id = port_id; 4755 sess->fw_login_state = DSC_LS_PRLI_PEND; 4756 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4757 4758 if (wd3_lo & BIT_7) 4759 sess->conf_compl_supported = 1; 4760 4761 if ((wd3_lo & BIT_4) == 0) 4762 sess->port_type = FCT_INITIATOR; 4763 else 4764 sess->port_type = FCT_TARGET; 4765 4766 } else 4767 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4768 4769 4770 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4771 "%s %d %8phC DS %d\n", 4772 __func__, __LINE__, sess->port_name, sess->disc_state); 4773 4774 switch (sess->disc_state) { 4775 case DSC_DELETED: 4776 qlt_plogi_ack_unref(vha, pla); 4777 break; 4778 4779 default: 4780 /* 4781 * Under normal circumstances we want to release nport handle 4782 * during LOGO process to avoid nport handle leaks inside FW. 4783 * The exception is when LOGO is done while another PLOGI with 4784 * the same nport handle is waiting as might be the case here. 4785 * Note: there is always a possibily of a race where session 4786 * deletion has already started for other reasons (e.g. ACL 4787 * removal) and now PLOGI arrives: 4788 * 1. if PLOGI arrived in FW after nport handle has been freed, 4789 * FW must have assigned this PLOGI a new/same handle and we 4790 * can proceed ACK'ing it as usual when session deletion 4791 * completes. 4792 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4793 * bit reached it, the handle has now been released. We'll 4794 * get an error when we ACK this PLOGI. Nothing will be sent 4795 * back to initiator. Initiator should eventually retry 4796 * PLOGI and situation will correct itself. 4797 */ 4798 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4799 (sess->d_id.b24 == port_id.b24)); 4800 4801 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4802 "%s %d %8phC post del sess\n", 4803 __func__, __LINE__, sess->port_name); 4804 4805 4806 qlt_schedule_sess_for_deletion(sess); 4807 break; 4808 } 4809 out: 4810 return res; 4811 } 4812 4813 /* 4814 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4815 */ 4816 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4817 struct imm_ntfy_from_isp *iocb) 4818 { 4819 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4820 struct qla_hw_data *ha = vha->hw; 4821 struct fc_port *sess = NULL, *conflict_sess = NULL; 4822 uint64_t wwn; 4823 port_id_t port_id; 4824 uint16_t loop_id; 4825 uint16_t wd3_lo; 4826 int res = 0; 4827 unsigned long flags; 4828 4829 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4830 4831 port_id.b.domain = iocb->u.isp24.port_id[2]; 4832 port_id.b.area = iocb->u.isp24.port_id[1]; 4833 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4834 port_id.b.rsvd_1 = 0; 4835 4836 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4837 4838 ql_dbg(ql_dbg_disc, vha, 0xf026, 4839 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4840 vha->vp_idx, iocb->u.isp24.port_id[2], 4841 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4842 iocb->u.isp24.status_subcode, loop_id, 4843 iocb->u.isp24.port_name); 4844 4845 /* res = 1 means ack at the end of thread 4846 * res = 0 means ack async/later. 4847 */ 4848 switch (iocb->u.isp24.status_subcode) { 4849 case ELS_PLOGI: 4850 res = qlt_handle_login(vha, iocb); 4851 break; 4852 4853 case ELS_PRLI: 4854 if (N2N_TOPO(ha)) { 4855 sess = qla2x00_find_fcport_by_wwpn(vha, 4856 iocb->u.isp24.port_name, 1); 4857 4858 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 4859 ql_dbg(ql_dbg_disc, vha, 0xffff, 4860 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 4861 __func__, __LINE__, 4862 iocb->u.isp24.port_name); 4863 qlt_send_term_imm_notif(vha, iocb, 1); 4864 break; 4865 } 4866 4867 res = qlt_handle_login(vha, iocb); 4868 break; 4869 } 4870 4871 if (IS_SW_RESV_ADDR(port_id)) { 4872 res = 1; 4873 break; 4874 } 4875 4876 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4877 4878 if (wwn) { 4879 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4880 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4881 loop_id, &conflict_sess); 4882 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4883 } 4884 4885 if (conflict_sess) { 4886 switch (conflict_sess->disc_state) { 4887 case DSC_DELETED: 4888 case DSC_DELETE_PEND: 4889 break; 4890 default: 4891 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4892 "PRLI with conflicting sess %p port %8phC\n", 4893 conflict_sess, conflict_sess->port_name); 4894 conflict_sess->fw_login_state = 4895 DSC_LS_PORT_UNAVAIL; 4896 qlt_send_term_imm_notif(vha, iocb, 1); 4897 res = 0; 4898 break; 4899 } 4900 } 4901 4902 if (sess != NULL) { 4903 bool delete = false; 4904 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4905 switch (sess->fw_login_state) { 4906 case DSC_LS_PLOGI_PEND: 4907 case DSC_LS_PLOGI_COMP: 4908 case DSC_LS_PRLI_COMP: 4909 break; 4910 default: 4911 delete = true; 4912 break; 4913 } 4914 4915 switch (sess->disc_state) { 4916 case DSC_LOGIN_PEND: 4917 case DSC_GPDB: 4918 case DSC_UPD_FCPORT: 4919 case DSC_LOGIN_COMPLETE: 4920 case DSC_ADISC: 4921 delete = false; 4922 break; 4923 default: 4924 break; 4925 } 4926 4927 if (delete) { 4928 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 4929 flags); 4930 /* 4931 * Impatient initiator sent PRLI before last 4932 * PLOGI could finish. Will force him to re-try, 4933 * while last one finishes. 4934 */ 4935 ql_log(ql_log_warn, sess->vha, 0xf095, 4936 "sess %p PRLI received, before plogi ack.\n", 4937 sess); 4938 qlt_send_term_imm_notif(vha, iocb, 1); 4939 res = 0; 4940 break; 4941 } 4942 4943 /* 4944 * This shouldn't happen under normal circumstances, 4945 * since we have deleted the old session during PLOGI 4946 */ 4947 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4948 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4949 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4950 4951 sess->local = 0; 4952 sess->loop_id = loop_id; 4953 sess->d_id = port_id; 4954 sess->fw_login_state = DSC_LS_PRLI_PEND; 4955 4956 if (wd3_lo & BIT_7) 4957 sess->conf_compl_supported = 1; 4958 4959 if ((wd3_lo & BIT_4) == 0) 4960 sess->port_type = FCT_INITIATOR; 4961 else 4962 sess->port_type = FCT_TARGET; 4963 4964 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4965 } 4966 res = 1; /* send notify ack */ 4967 4968 /* Make session global (not used in fabric mode) */ 4969 if (ha->current_topology != ISP_CFG_F) { 4970 if (sess) { 4971 ql_dbg(ql_dbg_disc, vha, 0x20fa, 4972 "%s %d %8phC post nack\n", 4973 __func__, __LINE__, sess->port_name); 4974 qla24xx_post_nack_work(vha, sess, iocb, 4975 SRB_NACK_PRLI); 4976 res = 0; 4977 } else { 4978 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4979 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4980 qla2xxx_wake_dpc(vha); 4981 } 4982 } else { 4983 if (sess) { 4984 ql_dbg(ql_dbg_disc, vha, 0x20fb, 4985 "%s %d %8phC post nack\n", 4986 __func__, __LINE__, sess->port_name); 4987 qla24xx_post_nack_work(vha, sess, iocb, 4988 SRB_NACK_PRLI); 4989 res = 0; 4990 } 4991 } 4992 break; 4993 4994 case ELS_TPRLO: 4995 if (le16_to_cpu(iocb->u.isp24.flags) & 4996 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 4997 loop_id = 0xFFFF; 4998 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 4999 res = 1; 5000 break; 5001 } 5002 /* fall through */ 5003 case ELS_LOGO: 5004 case ELS_PRLO: 5005 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5006 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5007 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5008 5009 if (sess) { 5010 sess->login_gen++; 5011 sess->fw_login_state = DSC_LS_LOGO_PEND; 5012 sess->logo_ack_needed = 1; 5013 memcpy(sess->iocb, iocb, IOCB_SIZE); 5014 } 5015 5016 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5017 5018 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5019 "%s: logo %llx res %d sess %p ", 5020 __func__, wwn, res, sess); 5021 if (res == 0) { 5022 /* 5023 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5024 * for LOGO_ACK & sess delete 5025 */ 5026 BUG_ON(!sess); 5027 res = 0; 5028 } else { 5029 /* cmd did not go to upper layer. */ 5030 if (sess) { 5031 qlt_schedule_sess_for_deletion(sess); 5032 res = 0; 5033 } 5034 /* else logo will be ack */ 5035 } 5036 break; 5037 case ELS_PDISC: 5038 case ELS_ADISC: 5039 { 5040 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5041 if (tgt->link_reinit_iocb_pending) { 5042 qlt_send_notify_ack(ha->base_qpair, 5043 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5044 tgt->link_reinit_iocb_pending = 0; 5045 } 5046 5047 sess = qla2x00_find_fcport_by_wwpn(vha, 5048 iocb->u.isp24.port_name, 1); 5049 if (sess) { 5050 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5051 "sess %p lid %d|%d DS %d LS %d\n", 5052 sess, sess->loop_id, loop_id, 5053 sess->disc_state, sess->fw_login_state); 5054 } 5055 5056 res = 1; /* send notify ack */ 5057 break; 5058 } 5059 5060 case ELS_FLOGI: /* should never happen */ 5061 default: 5062 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5063 "qla_target(%d): Unsupported ELS command %x " 5064 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5065 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5066 break; 5067 } 5068 5069 ql_dbg(ql_dbg_disc, vha, 0xf026, 5070 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5071 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5072 5073 return res; 5074 } 5075 5076 /* 5077 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5078 */ 5079 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5080 struct imm_ntfy_from_isp *iocb) 5081 { 5082 struct qla_hw_data *ha = vha->hw; 5083 uint32_t add_flags = 0; 5084 int send_notify_ack = 1; 5085 uint16_t status; 5086 5087 status = le16_to_cpu(iocb->u.isp2x.status); 5088 switch (status) { 5089 case IMM_NTFY_LIP_RESET: 5090 { 5091 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5092 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5093 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5094 iocb->u.isp24.status_subcode); 5095 5096 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5097 send_notify_ack = 0; 5098 break; 5099 } 5100 5101 case IMM_NTFY_LIP_LINK_REINIT: 5102 { 5103 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5104 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5105 "qla_target(%d): LINK REINIT (loop %#x, " 5106 "subcode %x)\n", vha->vp_idx, 5107 le16_to_cpu(iocb->u.isp24.nport_handle), 5108 iocb->u.isp24.status_subcode); 5109 if (tgt->link_reinit_iocb_pending) { 5110 qlt_send_notify_ack(ha->base_qpair, 5111 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5112 } 5113 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5114 tgt->link_reinit_iocb_pending = 1; 5115 /* 5116 * QLogic requires to wait after LINK REINIT for possible 5117 * PDISC or ADISC ELS commands 5118 */ 5119 send_notify_ack = 0; 5120 break; 5121 } 5122 5123 case IMM_NTFY_PORT_LOGOUT: 5124 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5125 "qla_target(%d): Port logout (loop " 5126 "%#x, subcode %x)\n", vha->vp_idx, 5127 le16_to_cpu(iocb->u.isp24.nport_handle), 5128 iocb->u.isp24.status_subcode); 5129 5130 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5131 send_notify_ack = 0; 5132 /* The sessions will be cleared in the callback, if needed */ 5133 break; 5134 5135 case IMM_NTFY_GLBL_TPRLO: 5136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5137 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5138 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5139 send_notify_ack = 0; 5140 /* The sessions will be cleared in the callback, if needed */ 5141 break; 5142 5143 case IMM_NTFY_PORT_CONFIG: 5144 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5145 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5146 status); 5147 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5148 send_notify_ack = 0; 5149 /* The sessions will be cleared in the callback, if needed */ 5150 break; 5151 5152 case IMM_NTFY_GLBL_LOGO: 5153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5154 "qla_target(%d): Link failure detected\n", 5155 vha->vp_idx); 5156 /* I_T nexus loss */ 5157 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5158 send_notify_ack = 0; 5159 break; 5160 5161 case IMM_NTFY_IOCB_OVERFLOW: 5162 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5163 "qla_target(%d): Cannot provide requested " 5164 "capability (IOCB overflowed the immediate notify " 5165 "resource count)\n", vha->vp_idx); 5166 break; 5167 5168 case IMM_NTFY_ABORT_TASK: 5169 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5170 "qla_target(%d): Abort Task (S %08x I %#x -> " 5171 "L %#x)\n", vha->vp_idx, 5172 le16_to_cpu(iocb->u.isp2x.seq_id), 5173 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5174 le16_to_cpu(iocb->u.isp2x.lun)); 5175 if (qlt_abort_task(vha, iocb) == 0) 5176 send_notify_ack = 0; 5177 break; 5178 5179 case IMM_NTFY_RESOURCE: 5180 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5181 "qla_target(%d): Out of resources, host %ld\n", 5182 vha->vp_idx, vha->host_no); 5183 break; 5184 5185 case IMM_NTFY_MSG_RX: 5186 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5187 "qla_target(%d): Immediate notify task %x\n", 5188 vha->vp_idx, iocb->u.isp2x.task_flags); 5189 break; 5190 5191 case IMM_NTFY_ELS: 5192 if (qlt_24xx_handle_els(vha, iocb) == 0) 5193 send_notify_ack = 0; 5194 break; 5195 default: 5196 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5197 "qla_target(%d): Received unknown immediate " 5198 "notify status %x\n", vha->vp_idx, status); 5199 break; 5200 } 5201 5202 if (send_notify_ack) 5203 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5204 0, 0); 5205 } 5206 5207 /* 5208 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5209 * This function sends busy to ISP 2xxx or 24xx. 5210 */ 5211 static int __qlt_send_busy(struct qla_qpair *qpair, 5212 struct atio_from_isp *atio, uint16_t status) 5213 { 5214 struct scsi_qla_host *vha = qpair->vha; 5215 struct ctio7_to_24xx *ctio24; 5216 struct qla_hw_data *ha = vha->hw; 5217 request_t *pkt; 5218 struct fc_port *sess = NULL; 5219 unsigned long flags; 5220 u16 temp; 5221 port_id_t id; 5222 5223 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 5224 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 5225 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 5226 id.b.rsvd_1 = 0; 5227 5228 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5229 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5230 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5231 if (!sess) { 5232 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5233 return 0; 5234 } 5235 /* Sending marker isn't necessary, since we called from ISR */ 5236 5237 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5238 if (!pkt) { 5239 ql_dbg(ql_dbg_io, vha, 0x3063, 5240 "qla_target(%d): %s failed: unable to allocate " 5241 "request packet", vha->vp_idx, __func__); 5242 return -ENOMEM; 5243 } 5244 5245 qpair->tgt_counters.num_q_full_sent++; 5246 pkt->entry_count = 1; 5247 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5248 5249 ctio24 = (struct ctio7_to_24xx *)pkt; 5250 ctio24->entry_type = CTIO_TYPE7; 5251 ctio24->nport_handle = sess->loop_id; 5252 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5253 ctio24->vp_index = vha->vp_idx; 5254 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5255 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5256 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5257 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5258 temp = (atio->u.isp24.attr << 9) | 5259 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5260 CTIO7_FLAGS_DONT_RET_CTIO; 5261 ctio24->u.status1.flags = cpu_to_le16(temp); 5262 /* 5263 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5264 * if the explicit conformation is used. 5265 */ 5266 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5267 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5268 5269 ctio24->u.status1.residual = get_datalen_for_atio(atio); 5270 5271 if (ctio24->u.status1.residual != 0) 5272 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 5273 5274 /* Memory Barrier */ 5275 wmb(); 5276 if (qpair->reqq_start_iocbs) 5277 qpair->reqq_start_iocbs(qpair); 5278 else 5279 qla2x00_start_iocbs(vha, qpair->req); 5280 return 0; 5281 } 5282 5283 /* 5284 * This routine is used to allocate a command for either a QFull condition 5285 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5286 * out previously. 5287 */ 5288 static void 5289 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5290 struct atio_from_isp *atio, uint16_t status, int qfull) 5291 { 5292 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5293 struct qla_hw_data *ha = vha->hw; 5294 struct fc_port *sess; 5295 struct se_session *se_sess; 5296 struct qla_tgt_cmd *cmd; 5297 int tag; 5298 unsigned long flags; 5299 5300 if (unlikely(tgt->tgt_stop)) { 5301 ql_dbg(ql_dbg_io, vha, 0x300a, 5302 "New command while device %p is shutting down\n", tgt); 5303 return; 5304 } 5305 5306 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5307 vha->hw->tgt.num_qfull_cmds_dropped++; 5308 if (vha->hw->tgt.num_qfull_cmds_dropped > 5309 vha->qla_stats.stat_max_qfull_cmds_dropped) 5310 vha->qla_stats.stat_max_qfull_cmds_dropped = 5311 vha->hw->tgt.num_qfull_cmds_dropped; 5312 5313 ql_dbg(ql_dbg_io, vha, 0x3068, 5314 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5315 vha->vp_idx, __func__, 5316 vha->hw->tgt.num_qfull_cmds_dropped); 5317 5318 qlt_chk_exch_leak_thresh_hold(vha); 5319 return; 5320 } 5321 5322 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5323 (vha, atio->u.isp24.fcp_hdr.s_id); 5324 if (!sess) 5325 return; 5326 5327 se_sess = sess->se_sess; 5328 5329 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 5330 if (tag < 0) 5331 return; 5332 5333 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5334 if (!cmd) { 5335 ql_dbg(ql_dbg_io, vha, 0x3009, 5336 "qla_target(%d): %s: Allocation of cmd failed\n", 5337 vha->vp_idx, __func__); 5338 5339 vha->hw->tgt.num_qfull_cmds_dropped++; 5340 if (vha->hw->tgt.num_qfull_cmds_dropped > 5341 vha->qla_stats.stat_max_qfull_cmds_dropped) 5342 vha->qla_stats.stat_max_qfull_cmds_dropped = 5343 vha->hw->tgt.num_qfull_cmds_dropped; 5344 5345 qlt_chk_exch_leak_thresh_hold(vha); 5346 return; 5347 } 5348 5349 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5350 5351 qlt_incr_num_pend_cmds(vha); 5352 INIT_LIST_HEAD(&cmd->cmd_list); 5353 memcpy(&cmd->atio, atio, sizeof(*atio)); 5354 5355 cmd->tgt = vha->vha_tgt.qla_tgt; 5356 cmd->vha = vha; 5357 cmd->reset_count = ha->base_qpair->chip_reset; 5358 cmd->q_full = 1; 5359 cmd->qpair = ha->base_qpair; 5360 5361 if (qfull) { 5362 cmd->q_full = 1; 5363 /* NOTE: borrowing the state field to carry the status */ 5364 cmd->state = status; 5365 } else 5366 cmd->term_exchg = 1; 5367 5368 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5369 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5370 5371 vha->hw->tgt.num_qfull_cmds_alloc++; 5372 if (vha->hw->tgt.num_qfull_cmds_alloc > 5373 vha->qla_stats.stat_max_qfull_cmds_alloc) 5374 vha->qla_stats.stat_max_qfull_cmds_alloc = 5375 vha->hw->tgt.num_qfull_cmds_alloc; 5376 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5377 } 5378 5379 int 5380 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5381 { 5382 struct scsi_qla_host *vha = qpair->vha; 5383 struct qla_hw_data *ha = vha->hw; 5384 unsigned long flags; 5385 struct qla_tgt_cmd *cmd, *tcmd; 5386 struct list_head free_list, q_full_list; 5387 int rc = 0; 5388 5389 if (list_empty(&ha->tgt.q_full_list)) 5390 return 0; 5391 5392 INIT_LIST_HEAD(&free_list); 5393 INIT_LIST_HEAD(&q_full_list); 5394 5395 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5396 if (list_empty(&ha->tgt.q_full_list)) { 5397 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5398 return 0; 5399 } 5400 5401 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5402 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5403 5404 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5405 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5406 if (cmd->q_full) 5407 /* cmd->state is a borrowed field to hold status */ 5408 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5409 else if (cmd->term_exchg) 5410 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5411 5412 if (rc == -ENOMEM) 5413 break; 5414 5415 if (cmd->q_full) 5416 ql_dbg(ql_dbg_io, vha, 0x3006, 5417 "%s: busy sent for ox_id[%04x]\n", __func__, 5418 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5419 else if (cmd->term_exchg) 5420 ql_dbg(ql_dbg_io, vha, 0x3007, 5421 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5422 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5423 else 5424 ql_dbg(ql_dbg_io, vha, 0x3008, 5425 "%s: Unexpected cmd in QFull list %p\n", __func__, 5426 cmd); 5427 5428 list_del(&cmd->cmd_list); 5429 list_add_tail(&cmd->cmd_list, &free_list); 5430 5431 /* piggy back on hardware_lock for protection */ 5432 vha->hw->tgt.num_qfull_cmds_alloc--; 5433 } 5434 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5435 5436 cmd = NULL; 5437 5438 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5439 list_del(&cmd->cmd_list); 5440 /* This cmd was never sent to TCM. There is no need 5441 * to schedule free or call free_cmd 5442 */ 5443 qlt_free_cmd(cmd); 5444 } 5445 5446 if (!list_empty(&q_full_list)) { 5447 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5448 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5449 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5450 } 5451 5452 return rc; 5453 } 5454 5455 static void 5456 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5457 uint16_t status) 5458 { 5459 int rc = 0; 5460 struct scsi_qla_host *vha = qpair->vha; 5461 5462 rc = __qlt_send_busy(qpair, atio, status); 5463 if (rc == -ENOMEM) 5464 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5465 } 5466 5467 static int 5468 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5469 struct atio_from_isp *atio, uint8_t ha_locked) 5470 { 5471 struct qla_hw_data *ha = vha->hw; 5472 unsigned long flags; 5473 5474 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5475 return 0; 5476 5477 if (!ha_locked) 5478 spin_lock_irqsave(&ha->hardware_lock, flags); 5479 qlt_send_busy(qpair, atio, qla_sam_status); 5480 if (!ha_locked) 5481 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5482 5483 return 1; 5484 } 5485 5486 /* ha->hardware_lock supposed to be held on entry */ 5487 /* called via callback from qla2xxx */ 5488 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5489 struct atio_from_isp *atio, uint8_t ha_locked) 5490 { 5491 struct qla_hw_data *ha = vha->hw; 5492 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5493 int rc; 5494 unsigned long flags = 0; 5495 5496 if (unlikely(tgt == NULL)) { 5497 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5498 "ATIO pkt, but no tgt (ha %p)", ha); 5499 return; 5500 } 5501 /* 5502 * In tgt_stop mode we also should allow all requests to pass. 5503 * Otherwise, some commands can stuck. 5504 */ 5505 5506 tgt->atio_irq_cmd_count++; 5507 5508 switch (atio->u.raw.entry_type) { 5509 case ATIO_TYPE7: 5510 if (unlikely(atio->u.isp24.exchange_addr == 5511 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5512 ql_dbg(ql_dbg_io, vha, 0x3065, 5513 "qla_target(%d): ATIO_TYPE7 " 5514 "received with UNKNOWN exchange address, " 5515 "sending QUEUE_FULL\n", vha->vp_idx); 5516 if (!ha_locked) 5517 spin_lock_irqsave(&ha->hardware_lock, flags); 5518 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5519 if (!ha_locked) 5520 spin_unlock_irqrestore(&ha->hardware_lock, 5521 flags); 5522 break; 5523 } 5524 5525 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5526 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5527 atio, ha_locked); 5528 if (rc != 0) { 5529 tgt->atio_irq_cmd_count--; 5530 return; 5531 } 5532 rc = qlt_handle_cmd_for_atio(vha, atio); 5533 } else { 5534 rc = qlt_handle_task_mgmt(vha, atio); 5535 } 5536 if (unlikely(rc != 0)) { 5537 if (!ha_locked) 5538 spin_lock_irqsave(&ha->hardware_lock, flags); 5539 switch (rc) { 5540 case -ENODEV: 5541 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5542 "qla_target: Unable to send command to target\n"); 5543 break; 5544 case -EBADF: 5545 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5546 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5547 qlt_send_term_exchange(ha->base_qpair, NULL, 5548 atio, 1, 0); 5549 break; 5550 case -EBUSY: 5551 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5552 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5553 vha->vp_idx); 5554 qlt_send_busy(ha->base_qpair, atio, 5555 tc_sam_status); 5556 break; 5557 default: 5558 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5559 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5560 vha->vp_idx); 5561 qlt_send_busy(ha->base_qpair, atio, 5562 qla_sam_status); 5563 break; 5564 } 5565 if (!ha_locked) 5566 spin_unlock_irqrestore(&ha->hardware_lock, 5567 flags); 5568 } 5569 break; 5570 5571 case IMMED_NOTIFY_TYPE: 5572 { 5573 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5574 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5575 "qla_target(%d): Received ATIO packet %x " 5576 "with error status %x\n", vha->vp_idx, 5577 atio->u.raw.entry_type, 5578 atio->u.isp2x.entry_status); 5579 break; 5580 } 5581 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5582 5583 if (!ha_locked) 5584 spin_lock_irqsave(&ha->hardware_lock, flags); 5585 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5586 if (!ha_locked) 5587 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5588 break; 5589 } 5590 5591 default: 5592 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5593 "qla_target(%d): Received unknown ATIO atio " 5594 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5595 break; 5596 } 5597 5598 tgt->atio_irq_cmd_count--; 5599 } 5600 5601 /* ha->hardware_lock supposed to be held on entry */ 5602 /* called via callback from qla2xxx */ 5603 static void qlt_response_pkt(struct scsi_qla_host *vha, 5604 struct rsp_que *rsp, response_t *pkt) 5605 { 5606 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5607 5608 if (unlikely(tgt == NULL)) { 5609 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5610 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5611 vha->vp_idx, pkt->entry_type, vha->hw); 5612 return; 5613 } 5614 5615 /* 5616 * In tgt_stop mode we also should allow all requests to pass. 5617 * Otherwise, some commands can stuck. 5618 */ 5619 5620 switch (pkt->entry_type) { 5621 case CTIO_CRC2: 5622 case CTIO_TYPE7: 5623 { 5624 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5625 qlt_do_ctio_completion(vha, rsp, entry->handle, 5626 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5627 entry); 5628 break; 5629 } 5630 5631 case ACCEPT_TGT_IO_TYPE: 5632 { 5633 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5634 int rc; 5635 if (atio->u.isp2x.status != 5636 cpu_to_le16(ATIO_CDB_VALID)) { 5637 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5638 "qla_target(%d): ATIO with error " 5639 "status %x received\n", vha->vp_idx, 5640 le16_to_cpu(atio->u.isp2x.status)); 5641 break; 5642 } 5643 5644 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5645 if (rc != 0) 5646 return; 5647 5648 rc = qlt_handle_cmd_for_atio(vha, atio); 5649 if (unlikely(rc != 0)) { 5650 switch (rc) { 5651 case -ENODEV: 5652 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5653 "qla_target: Unable to send command to target\n"); 5654 break; 5655 case -EBADF: 5656 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5657 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5658 qlt_send_term_exchange(rsp->qpair, NULL, 5659 atio, 1, 0); 5660 break; 5661 case -EBUSY: 5662 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5663 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5664 vha->vp_idx); 5665 qlt_send_busy(rsp->qpair, atio, 5666 tc_sam_status); 5667 break; 5668 default: 5669 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5670 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5671 vha->vp_idx); 5672 qlt_send_busy(rsp->qpair, atio, 5673 qla_sam_status); 5674 break; 5675 } 5676 } 5677 } 5678 break; 5679 5680 case CONTINUE_TGT_IO_TYPE: 5681 { 5682 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5683 qlt_do_ctio_completion(vha, rsp, entry->handle, 5684 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5685 entry); 5686 break; 5687 } 5688 5689 case CTIO_A64_TYPE: 5690 { 5691 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5692 qlt_do_ctio_completion(vha, rsp, entry->handle, 5693 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5694 entry); 5695 break; 5696 } 5697 5698 case IMMED_NOTIFY_TYPE: 5699 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5700 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5701 break; 5702 5703 case NOTIFY_ACK_TYPE: 5704 if (tgt->notify_ack_expected > 0) { 5705 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5706 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5707 "NOTIFY_ACK seq %08x status %x\n", 5708 le16_to_cpu(entry->u.isp2x.seq_id), 5709 le16_to_cpu(entry->u.isp2x.status)); 5710 tgt->notify_ack_expected--; 5711 if (entry->u.isp2x.status != 5712 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5713 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5714 "qla_target(%d): NOTIFY_ACK " 5715 "failed %x\n", vha->vp_idx, 5716 le16_to_cpu(entry->u.isp2x.status)); 5717 } 5718 } else { 5719 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5720 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5721 vha->vp_idx); 5722 } 5723 break; 5724 5725 case ABTS_RECV_24XX: 5726 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5727 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5728 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5729 break; 5730 5731 case ABTS_RESP_24XX: 5732 if (tgt->abts_resp_expected > 0) { 5733 struct abts_resp_from_24xx_fw *entry = 5734 (struct abts_resp_from_24xx_fw *)pkt; 5735 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5736 "ABTS_RESP_24XX: compl_status %x\n", 5737 entry->compl_status); 5738 tgt->abts_resp_expected--; 5739 if (le16_to_cpu(entry->compl_status) != 5740 ABTS_RESP_COMPL_SUCCESS) { 5741 if ((entry->error_subcode1 == 0x1E) && 5742 (entry->error_subcode2 == 0)) { 5743 /* 5744 * We've got a race here: aborted 5745 * exchange not terminated, i.e. 5746 * response for the aborted command was 5747 * sent between the abort request was 5748 * received and processed. 5749 * Unfortunately, the firmware has a 5750 * silly requirement that all aborted 5751 * exchanges must be explicitely 5752 * terminated, otherwise it refuses to 5753 * send responses for the abort 5754 * requests. So, we have to 5755 * (re)terminate the exchange and retry 5756 * the abort response. 5757 */ 5758 qlt_24xx_retry_term_exchange(vha, 5759 entry); 5760 } else 5761 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5762 "qla_target(%d): ABTS_RESP_24XX " 5763 "failed %x (subcode %x:%x)", 5764 vha->vp_idx, entry->compl_status, 5765 entry->error_subcode1, 5766 entry->error_subcode2); 5767 } 5768 } else { 5769 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5770 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5771 "received\n", vha->vp_idx); 5772 } 5773 break; 5774 5775 default: 5776 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5777 "qla_target(%d): Received unknown response pkt " 5778 "type %x\n", vha->vp_idx, pkt->entry_type); 5779 break; 5780 } 5781 5782 } 5783 5784 /* 5785 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5786 */ 5787 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5788 uint16_t *mailbox) 5789 { 5790 struct qla_hw_data *ha = vha->hw; 5791 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5792 int login_code; 5793 5794 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5795 return; 5796 5797 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5798 IS_QLA2100(ha)) 5799 return; 5800 /* 5801 * In tgt_stop mode we also should allow all requests to pass. 5802 * Otherwise, some commands can stuck. 5803 */ 5804 5805 5806 switch (code) { 5807 case MBA_RESET: /* Reset */ 5808 case MBA_SYSTEM_ERR: /* System Error */ 5809 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5810 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5811 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5812 "qla_target(%d): System error async event %#x " 5813 "occurred", vha->vp_idx, code); 5814 break; 5815 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5816 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5817 break; 5818 5819 case MBA_LOOP_UP: 5820 { 5821 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5822 "qla_target(%d): Async LOOP_UP occurred " 5823 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5824 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5825 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5826 if (tgt->link_reinit_iocb_pending) { 5827 qlt_send_notify_ack(ha->base_qpair, 5828 (void *)&tgt->link_reinit_iocb, 5829 0, 0, 0, 0, 0, 0); 5830 tgt->link_reinit_iocb_pending = 0; 5831 } 5832 break; 5833 } 5834 5835 case MBA_LIP_OCCURRED: 5836 case MBA_LOOP_DOWN: 5837 case MBA_LIP_RESET: 5838 case MBA_RSCN_UPDATE: 5839 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5840 "qla_target(%d): Async event %#x occurred " 5841 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5842 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5843 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5844 break; 5845 5846 case MBA_REJECTED_FCP_CMD: 5847 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5848 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5849 vha->vp_idx, 5850 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5851 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5852 5853 if (le16_to_cpu(mailbox[3]) == 1) { 5854 /* exchange starvation. */ 5855 vha->hw->exch_starvation++; 5856 if (vha->hw->exch_starvation > 5) { 5857 ql_log(ql_log_warn, vha, 0xd03a, 5858 "Exchange starvation-. Resetting RISC\n"); 5859 5860 vha->hw->exch_starvation = 0; 5861 if (IS_P3P_TYPE(vha->hw)) 5862 set_bit(FCOE_CTX_RESET_NEEDED, 5863 &vha->dpc_flags); 5864 else 5865 set_bit(ISP_ABORT_NEEDED, 5866 &vha->dpc_flags); 5867 qla2xxx_wake_dpc(vha); 5868 } 5869 } 5870 break; 5871 5872 case MBA_PORT_UPDATE: 5873 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5874 "qla_target(%d): Port update async event %#x " 5875 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5876 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5877 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5878 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5879 5880 login_code = le16_to_cpu(mailbox[2]); 5881 if (login_code == 0x4) { 5882 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5883 "Async MB 2: Got PLOGI Complete\n"); 5884 vha->hw->exch_starvation = 0; 5885 } else if (login_code == 0x7) 5886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5887 "Async MB 2: Port Logged Out\n"); 5888 break; 5889 default: 5890 break; 5891 } 5892 5893 } 5894 5895 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5896 uint16_t loop_id) 5897 { 5898 fc_port_t *fcport, *tfcp, *del; 5899 int rc; 5900 unsigned long flags; 5901 u8 newfcport = 0; 5902 5903 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 5904 if (!fcport) { 5905 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5906 "qla_target(%d): Allocation of tmp FC port failed", 5907 vha->vp_idx); 5908 return NULL; 5909 } 5910 5911 fcport->loop_id = loop_id; 5912 5913 rc = qla24xx_gpdb_wait(vha, fcport, 0); 5914 if (rc != QLA_SUCCESS) { 5915 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5916 "qla_target(%d): Failed to retrieve fcport " 5917 "information -- get_port_database() returned %x " 5918 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5919 kfree(fcport); 5920 return NULL; 5921 } 5922 5923 del = NULL; 5924 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 5925 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 5926 5927 if (tfcp) { 5928 tfcp->d_id = fcport->d_id; 5929 tfcp->port_type = fcport->port_type; 5930 tfcp->supported_classes = fcport->supported_classes; 5931 tfcp->flags |= fcport->flags; 5932 tfcp->scan_state = QLA_FCPORT_FOUND; 5933 5934 del = fcport; 5935 fcport = tfcp; 5936 } else { 5937 if (vha->hw->current_topology == ISP_CFG_F) 5938 fcport->flags |= FCF_FABRIC_DEVICE; 5939 5940 list_add_tail(&fcport->list, &vha->vp_fcports); 5941 if (!IS_SW_RESV_ADDR(fcport->d_id)) 5942 vha->fcport_count++; 5943 fcport->login_gen++; 5944 fcport->disc_state = DSC_LOGIN_COMPLETE; 5945 fcport->login_succ = 1; 5946 newfcport = 1; 5947 } 5948 5949 fcport->deleted = 0; 5950 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 5951 5952 switch (vha->host->active_mode) { 5953 case MODE_INITIATOR: 5954 case MODE_DUAL: 5955 if (newfcport) { 5956 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 5957 ql_dbg(ql_dbg_disc, vha, 0x20fe, 5958 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 5959 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5960 qla24xx_post_upd_fcport_work(vha, fcport); 5961 } else { 5962 ql_dbg(ql_dbg_disc, vha, 0x20ff, 5963 "%s %d %8phC post gpsc fcp_cnt %d\n", 5964 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5965 qla24xx_post_gpsc_work(vha, fcport); 5966 } 5967 } 5968 break; 5969 5970 case MODE_TARGET: 5971 default: 5972 break; 5973 } 5974 if (del) 5975 qla2x00_free_fcport(del); 5976 5977 return fcport; 5978 } 5979 5980 /* Must be called under tgt_mutex */ 5981 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 5982 uint8_t *s_id) 5983 { 5984 struct fc_port *sess = NULL; 5985 fc_port_t *fcport = NULL; 5986 int rc, global_resets; 5987 uint16_t loop_id = 0; 5988 5989 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 5990 /* 5991 * This is Domain Controller, so it should be 5992 * OK to drop SCSI commands from it. 5993 */ 5994 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5995 "Unable to find initiator with S_ID %x:%x:%x", 5996 s_id[0], s_id[1], s_id[2]); 5997 return NULL; 5998 } 5999 6000 mutex_lock(&vha->vha_tgt.tgt_mutex); 6001 6002 retry: 6003 global_resets = 6004 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6005 6006 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6007 if (rc != 0) { 6008 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6009 6010 ql_log(ql_log_info, vha, 0xf071, 6011 "qla_target(%d): Unable to find " 6012 "initiator with S_ID %x:%x:%x", 6013 vha->vp_idx, s_id[0], s_id[1], 6014 s_id[2]); 6015 6016 if (rc == -ENOENT) { 6017 qlt_port_logo_t logo; 6018 sid_to_portid(s_id, &logo.id); 6019 logo.cmd_count = 1; 6020 qlt_send_first_logo(vha, &logo); 6021 } 6022 6023 return NULL; 6024 } 6025 6026 fcport = qlt_get_port_database(vha, loop_id); 6027 if (!fcport) { 6028 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6029 return NULL; 6030 } 6031 6032 if (global_resets != 6033 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6034 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6035 "qla_target(%d): global reset during session discovery " 6036 "(counter was %d, new %d), retrying", vha->vp_idx, 6037 global_resets, 6038 atomic_read(&vha->vha_tgt. 6039 qla_tgt->tgt_global_resets_count)); 6040 goto retry; 6041 } 6042 6043 sess = qlt_create_sess(vha, fcport, true); 6044 6045 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6046 6047 return sess; 6048 } 6049 6050 static void qlt_abort_work(struct qla_tgt *tgt, 6051 struct qla_tgt_sess_work_param *prm) 6052 { 6053 struct scsi_qla_host *vha = tgt->vha; 6054 struct qla_hw_data *ha = vha->hw; 6055 struct fc_port *sess = NULL; 6056 unsigned long flags = 0, flags2 = 0; 6057 uint32_t be_s_id; 6058 uint8_t s_id[3]; 6059 int rc; 6060 6061 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6062 6063 if (tgt->tgt_stop) 6064 goto out_term2; 6065 6066 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 6067 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 6068 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 6069 6070 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 6071 (unsigned char *)&be_s_id); 6072 if (!sess) { 6073 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6074 6075 sess = qlt_make_local_sess(vha, s_id); 6076 /* sess has got an extra creation ref */ 6077 6078 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6079 if (!sess) 6080 goto out_term2; 6081 } else { 6082 if (sess->deleted) { 6083 sess = NULL; 6084 goto out_term2; 6085 } 6086 6087 if (!kref_get_unless_zero(&sess->sess_kref)) { 6088 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6089 "%s: kref_get fail %8phC \n", 6090 __func__, sess->port_name); 6091 sess = NULL; 6092 goto out_term2; 6093 } 6094 } 6095 6096 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6097 ha->tgt.tgt_ops->put_sess(sess); 6098 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6099 6100 if (rc != 0) 6101 goto out_term; 6102 return; 6103 6104 out_term2: 6105 if (sess) 6106 ha->tgt.tgt_ops->put_sess(sess); 6107 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6108 6109 out_term: 6110 spin_lock_irqsave(&ha->hardware_lock, flags); 6111 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6112 FCP_TMF_REJECTED, false); 6113 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6114 } 6115 6116 static void qlt_tmr_work(struct qla_tgt *tgt, 6117 struct qla_tgt_sess_work_param *prm) 6118 { 6119 struct atio_from_isp *a = &prm->tm_iocb2; 6120 struct scsi_qla_host *vha = tgt->vha; 6121 struct qla_hw_data *ha = vha->hw; 6122 struct fc_port *sess = NULL; 6123 unsigned long flags; 6124 uint8_t *s_id = NULL; /* to hide compiler warnings */ 6125 int rc; 6126 u64 unpacked_lun; 6127 int fn; 6128 void *iocb; 6129 6130 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6131 6132 if (tgt->tgt_stop) 6133 goto out_term2; 6134 6135 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6136 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6137 if (!sess) { 6138 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6139 6140 sess = qlt_make_local_sess(vha, s_id); 6141 /* sess has got an extra creation ref */ 6142 6143 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6144 if (!sess) 6145 goto out_term2; 6146 } else { 6147 if (sess->deleted) { 6148 sess = NULL; 6149 goto out_term2; 6150 } 6151 6152 if (!kref_get_unless_zero(&sess->sess_kref)) { 6153 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6154 "%s: kref_get fail %8phC\n", 6155 __func__, sess->port_name); 6156 sess = NULL; 6157 goto out_term2; 6158 } 6159 } 6160 6161 iocb = a; 6162 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6163 unpacked_lun = 6164 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6165 6166 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6167 ha->tgt.tgt_ops->put_sess(sess); 6168 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6169 6170 if (rc != 0) 6171 goto out_term; 6172 return; 6173 6174 out_term2: 6175 if (sess) 6176 ha->tgt.tgt_ops->put_sess(sess); 6177 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6178 out_term: 6179 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6180 } 6181 6182 static void qlt_sess_work_fn(struct work_struct *work) 6183 { 6184 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6185 struct scsi_qla_host *vha = tgt->vha; 6186 unsigned long flags; 6187 6188 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6189 6190 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6191 while (!list_empty(&tgt->sess_works_list)) { 6192 struct qla_tgt_sess_work_param *prm = list_entry( 6193 tgt->sess_works_list.next, typeof(*prm), 6194 sess_works_list_entry); 6195 6196 /* 6197 * This work can be scheduled on several CPUs at time, so we 6198 * must delete the entry to eliminate double processing 6199 */ 6200 list_del(&prm->sess_works_list_entry); 6201 6202 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6203 6204 switch (prm->type) { 6205 case QLA_TGT_SESS_WORK_ABORT: 6206 qlt_abort_work(tgt, prm); 6207 break; 6208 case QLA_TGT_SESS_WORK_TM: 6209 qlt_tmr_work(tgt, prm); 6210 break; 6211 default: 6212 BUG_ON(1); 6213 break; 6214 } 6215 6216 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6217 6218 kfree(prm); 6219 } 6220 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6221 } 6222 6223 /* Must be called under tgt_host_action_mutex */ 6224 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6225 { 6226 struct qla_tgt *tgt; 6227 int rc, i; 6228 struct qla_qpair_hint *h; 6229 6230 if (!QLA_TGT_MODE_ENABLED()) 6231 return 0; 6232 6233 if (!IS_TGT_MODE_CAPABLE(ha)) { 6234 ql_log(ql_log_warn, base_vha, 0xe070, 6235 "This adapter does not support target mode.\n"); 6236 return 0; 6237 } 6238 6239 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6240 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6241 6242 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6243 6244 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6245 if (!tgt) { 6246 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6247 "Unable to allocate struct qla_tgt\n"); 6248 return -ENOMEM; 6249 } 6250 6251 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6252 sizeof(struct qla_qpair_hint), 6253 GFP_KERNEL); 6254 if (!tgt->qphints) { 6255 kfree(tgt); 6256 ql_log(ql_log_warn, base_vha, 0x0197, 6257 "Unable to allocate qpair hints.\n"); 6258 return -ENOMEM; 6259 } 6260 6261 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6262 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6263 6264 rc = btree_init64(&tgt->lun_qpair_map); 6265 if (rc) { 6266 kfree(tgt->qphints); 6267 kfree(tgt); 6268 ql_log(ql_log_info, base_vha, 0x0198, 6269 "Unable to initialize lun_qpair_map btree\n"); 6270 return -EIO; 6271 } 6272 h = &tgt->qphints[0]; 6273 h->qpair = ha->base_qpair; 6274 INIT_LIST_HEAD(&h->hint_elem); 6275 h->cpuid = ha->base_qpair->cpuid; 6276 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6277 6278 for (i = 0; i < ha->max_qpairs; i++) { 6279 unsigned long flags; 6280 6281 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6282 h = &tgt->qphints[i + 1]; 6283 INIT_LIST_HEAD(&h->hint_elem); 6284 if (qpair) { 6285 h->qpair = qpair; 6286 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6287 list_add_tail(&h->hint_elem, &qpair->hints_list); 6288 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6289 h->cpuid = qpair->cpuid; 6290 } 6291 } 6292 6293 tgt->ha = ha; 6294 tgt->vha = base_vha; 6295 init_waitqueue_head(&tgt->waitQ); 6296 INIT_LIST_HEAD(&tgt->del_sess_list); 6297 spin_lock_init(&tgt->sess_work_lock); 6298 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6299 INIT_LIST_HEAD(&tgt->sess_works_list); 6300 atomic_set(&tgt->tgt_global_resets_count, 0); 6301 6302 base_vha->vha_tgt.qla_tgt = tgt; 6303 6304 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6305 "qla_target(%d): using 64 Bit PCI addressing", 6306 base_vha->vp_idx); 6307 /* 3 is reserved */ 6308 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6309 6310 mutex_lock(&qla_tgt_mutex); 6311 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6312 mutex_unlock(&qla_tgt_mutex); 6313 6314 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6315 ha->tgt.tgt_ops->add_target(base_vha); 6316 6317 return 0; 6318 } 6319 6320 /* Must be called under tgt_host_action_mutex */ 6321 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6322 { 6323 if (!vha->vha_tgt.qla_tgt) 6324 return 0; 6325 6326 if (vha->fc_vport) { 6327 qlt_release(vha->vha_tgt.qla_tgt); 6328 return 0; 6329 } 6330 6331 /* free left over qfull cmds */ 6332 qlt_init_term_exchange(vha); 6333 6334 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6335 vha->host_no, ha); 6336 qlt_release(vha->vha_tgt.qla_tgt); 6337 6338 return 0; 6339 } 6340 6341 void qlt_remove_target_resources(struct qla_hw_data *ha) 6342 { 6343 struct scsi_qla_host *node; 6344 u32 key = 0; 6345 6346 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6347 btree_remove32(&ha->tgt.host_map, key); 6348 6349 btree_destroy32(&ha->tgt.host_map); 6350 } 6351 6352 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6353 unsigned char *b) 6354 { 6355 int i; 6356 6357 pr_debug("qla2xxx HW vha->node_name: "); 6358 for (i = 0; i < WWN_SIZE; i++) 6359 pr_debug("%02x ", vha->node_name[i]); 6360 pr_debug("\n"); 6361 pr_debug("qla2xxx HW vha->port_name: "); 6362 for (i = 0; i < WWN_SIZE; i++) 6363 pr_debug("%02x ", vha->port_name[i]); 6364 pr_debug("\n"); 6365 6366 pr_debug("qla2xxx passed configfs WWPN: "); 6367 put_unaligned_be64(wwpn, b); 6368 for (i = 0; i < WWN_SIZE; i++) 6369 pr_debug("%02x ", b[i]); 6370 pr_debug("\n"); 6371 } 6372 6373 /** 6374 * qla_tgt_lport_register - register lport with external module 6375 * 6376 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6377 * @phys_wwpn: 6378 * @npiv_wwpn: 6379 * @npiv_wwnn: 6380 * @callback: lport initialization callback for tcm_qla2xxx code 6381 */ 6382 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6383 u64 npiv_wwpn, u64 npiv_wwnn, 6384 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6385 { 6386 struct qla_tgt *tgt; 6387 struct scsi_qla_host *vha; 6388 struct qla_hw_data *ha; 6389 struct Scsi_Host *host; 6390 unsigned long flags; 6391 int rc; 6392 u8 b[WWN_SIZE]; 6393 6394 mutex_lock(&qla_tgt_mutex); 6395 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6396 vha = tgt->vha; 6397 ha = vha->hw; 6398 6399 host = vha->host; 6400 if (!host) 6401 continue; 6402 6403 if (!(host->hostt->supported_mode & MODE_TARGET)) 6404 continue; 6405 6406 spin_lock_irqsave(&ha->hardware_lock, flags); 6407 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6408 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6409 host->host_no); 6410 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6411 continue; 6412 } 6413 if (tgt->tgt_stop) { 6414 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6415 host->host_no); 6416 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6417 continue; 6418 } 6419 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6420 6421 if (!scsi_host_get(host)) { 6422 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6423 "Unable to scsi_host_get() for" 6424 " qla2xxx scsi_host\n"); 6425 continue; 6426 } 6427 qlt_lport_dump(vha, phys_wwpn, b); 6428 6429 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6430 scsi_host_put(host); 6431 continue; 6432 } 6433 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6434 if (rc != 0) 6435 scsi_host_put(host); 6436 6437 mutex_unlock(&qla_tgt_mutex); 6438 return rc; 6439 } 6440 mutex_unlock(&qla_tgt_mutex); 6441 6442 return -ENODEV; 6443 } 6444 EXPORT_SYMBOL(qlt_lport_register); 6445 6446 /** 6447 * qla_tgt_lport_deregister - Degister lport 6448 * 6449 * @vha: Registered scsi_qla_host pointer 6450 */ 6451 void qlt_lport_deregister(struct scsi_qla_host *vha) 6452 { 6453 struct qla_hw_data *ha = vha->hw; 6454 struct Scsi_Host *sh = vha->host; 6455 /* 6456 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6457 */ 6458 vha->vha_tgt.target_lport_ptr = NULL; 6459 ha->tgt.tgt_ops = NULL; 6460 /* 6461 * Release the Scsi_Host reference for the underlying qla2xxx host 6462 */ 6463 scsi_host_put(sh); 6464 } 6465 EXPORT_SYMBOL(qlt_lport_deregister); 6466 6467 /* Must be called under HW lock */ 6468 static void qlt_set_mode(struct scsi_qla_host *vha) 6469 { 6470 switch (ql2x_ini_mode) { 6471 case QLA2XXX_INI_MODE_DISABLED: 6472 case QLA2XXX_INI_MODE_EXCLUSIVE: 6473 vha->host->active_mode = MODE_TARGET; 6474 break; 6475 case QLA2XXX_INI_MODE_ENABLED: 6476 vha->host->active_mode = MODE_UNKNOWN; 6477 break; 6478 case QLA2XXX_INI_MODE_DUAL: 6479 vha->host->active_mode = MODE_DUAL; 6480 break; 6481 default: 6482 break; 6483 } 6484 } 6485 6486 /* Must be called under HW lock */ 6487 static void qlt_clear_mode(struct scsi_qla_host *vha) 6488 { 6489 switch (ql2x_ini_mode) { 6490 case QLA2XXX_INI_MODE_DISABLED: 6491 vha->host->active_mode = MODE_UNKNOWN; 6492 break; 6493 case QLA2XXX_INI_MODE_EXCLUSIVE: 6494 vha->host->active_mode = MODE_INITIATOR; 6495 break; 6496 case QLA2XXX_INI_MODE_ENABLED: 6497 case QLA2XXX_INI_MODE_DUAL: 6498 vha->host->active_mode = MODE_INITIATOR; 6499 break; 6500 default: 6501 break; 6502 } 6503 } 6504 6505 /* 6506 * qla_tgt_enable_vha - NO LOCK HELD 6507 * 6508 * host_reset, bring up w/ Target Mode Enabled 6509 */ 6510 void 6511 qlt_enable_vha(struct scsi_qla_host *vha) 6512 { 6513 struct qla_hw_data *ha = vha->hw; 6514 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6515 unsigned long flags; 6516 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6517 6518 if (!tgt) { 6519 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6520 "Unable to locate qla_tgt pointer from" 6521 " struct qla_hw_data\n"); 6522 dump_stack(); 6523 return; 6524 } 6525 6526 spin_lock_irqsave(&ha->hardware_lock, flags); 6527 tgt->tgt_stopped = 0; 6528 qlt_set_mode(vha); 6529 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6530 6531 if (vha->vp_idx) { 6532 qla24xx_disable_vp(vha); 6533 qla24xx_enable_vp(vha); 6534 } else { 6535 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6536 qla2xxx_wake_dpc(base_vha); 6537 qla2x00_wait_for_hba_online(base_vha); 6538 } 6539 } 6540 EXPORT_SYMBOL(qlt_enable_vha); 6541 6542 /* 6543 * qla_tgt_disable_vha - NO LOCK HELD 6544 * 6545 * Disable Target Mode and reset the adapter 6546 */ 6547 static void qlt_disable_vha(struct scsi_qla_host *vha) 6548 { 6549 struct qla_hw_data *ha = vha->hw; 6550 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6551 unsigned long flags; 6552 6553 if (!tgt) { 6554 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6555 "Unable to locate qla_tgt pointer from" 6556 " struct qla_hw_data\n"); 6557 dump_stack(); 6558 return; 6559 } 6560 6561 spin_lock_irqsave(&ha->hardware_lock, flags); 6562 qlt_clear_mode(vha); 6563 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6564 6565 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6566 qla2xxx_wake_dpc(vha); 6567 qla2x00_wait_for_hba_online(vha); 6568 } 6569 6570 /* 6571 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6572 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6573 * members. 6574 */ 6575 void 6576 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6577 { 6578 vha->vha_tgt.qla_tgt = NULL; 6579 6580 mutex_init(&vha->vha_tgt.tgt_mutex); 6581 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6582 6583 qlt_clear_mode(vha); 6584 6585 /* 6586 * NOTE: Currently the value is kept the same for <24xx and 6587 * >=24xx ISPs. If it is necessary to change it, 6588 * the check should be added for specific ISPs, 6589 * assigning the value appropriately. 6590 */ 6591 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6592 6593 qlt_add_target(ha, vha); 6594 } 6595 6596 u8 6597 qlt_rff_id(struct scsi_qla_host *vha) 6598 { 6599 u8 fc4_feature = 0; 6600 /* 6601 * FC-4 Feature bit 0 indicates target functionality to the name server. 6602 */ 6603 if (qla_tgt_mode_enabled(vha)) { 6604 fc4_feature = BIT_0; 6605 } else if (qla_ini_mode_enabled(vha)) { 6606 fc4_feature = BIT_1; 6607 } else if (qla_dual_mode_enabled(vha)) 6608 fc4_feature = BIT_0 | BIT_1; 6609 6610 return fc4_feature; 6611 } 6612 6613 /* 6614 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6615 * @ha: HA context 6616 * 6617 * Beginning of ATIO ring has initialization control block already built 6618 * by nvram config routine. 6619 * 6620 * Returns 0 on success. 6621 */ 6622 void 6623 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6624 { 6625 struct qla_hw_data *ha = vha->hw; 6626 uint16_t cnt; 6627 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6628 6629 if (qla_ini_mode_enabled(vha)) 6630 return; 6631 6632 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6633 pkt->u.raw.signature = ATIO_PROCESSED; 6634 pkt++; 6635 } 6636 6637 } 6638 6639 /* 6640 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6641 * @ha: SCSI driver HA context 6642 */ 6643 void 6644 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6645 { 6646 struct qla_hw_data *ha = vha->hw; 6647 struct atio_from_isp *pkt; 6648 int cnt, i; 6649 6650 if (!ha->flags.fw_started) 6651 return; 6652 6653 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6654 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6655 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6656 cnt = pkt->u.raw.entry_count; 6657 6658 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6659 /* 6660 * This packet is corrupted. The header + payload 6661 * can not be trusted. There is no point in passing 6662 * it further up. 6663 */ 6664 ql_log(ql_log_warn, vha, 0xd03c, 6665 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6666 pkt->u.isp24.fcp_hdr.s_id, 6667 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6668 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6669 6670 adjust_corrupted_atio(pkt); 6671 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6672 ha_locked, 0); 6673 } else { 6674 qlt_24xx_atio_pkt_all_vps(vha, 6675 (struct atio_from_isp *)pkt, ha_locked); 6676 } 6677 6678 for (i = 0; i < cnt; i++) { 6679 ha->tgt.atio_ring_index++; 6680 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6681 ha->tgt.atio_ring_index = 0; 6682 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6683 } else 6684 ha->tgt.atio_ring_ptr++; 6685 6686 pkt->u.raw.signature = ATIO_PROCESSED; 6687 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6688 } 6689 wmb(); 6690 } 6691 6692 /* Adjust ring index */ 6693 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6694 } 6695 6696 void 6697 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6698 { 6699 struct qla_hw_data *ha = vha->hw; 6700 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6701 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6702 6703 if (!QLA_TGT_MODE_ENABLED()) 6704 return; 6705 6706 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6707 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6708 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6709 6710 if (ha->flags.msix_enabled) { 6711 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6712 if (IS_QLA2071(ha)) { 6713 /* 4 ports Baker: Enable Interrupt Handshake */ 6714 icb->msix_atio = 0; 6715 icb->firmware_options_2 |= BIT_26; 6716 } else { 6717 icb->msix_atio = cpu_to_le16(msix->entry); 6718 icb->firmware_options_2 &= ~BIT_26; 6719 } 6720 ql_dbg(ql_dbg_init, vha, 0xf072, 6721 "Registering ICB vector 0x%x for atio que.\n", 6722 msix->entry); 6723 } 6724 } else { 6725 /* INTx|MSI */ 6726 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6727 icb->msix_atio = 0; 6728 icb->firmware_options_2 |= BIT_26; 6729 ql_dbg(ql_dbg_init, vha, 0xf072, 6730 "%s: Use INTx for ATIOQ.\n", __func__); 6731 } 6732 } 6733 } 6734 6735 void 6736 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6737 { 6738 struct qla_hw_data *ha = vha->hw; 6739 u32 tmp; 6740 6741 if (!QLA_TGT_MODE_ENABLED()) 6742 return; 6743 6744 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6745 if (!ha->tgt.saved_set) { 6746 /* We save only once */ 6747 ha->tgt.saved_exchange_count = nv->exchange_count; 6748 ha->tgt.saved_firmware_options_1 = 6749 nv->firmware_options_1; 6750 ha->tgt.saved_firmware_options_2 = 6751 nv->firmware_options_2; 6752 ha->tgt.saved_firmware_options_3 = 6753 nv->firmware_options_3; 6754 ha->tgt.saved_set = 1; 6755 } 6756 6757 if (qla_tgt_mode_enabled(vha)) 6758 nv->exchange_count = cpu_to_le16(0xFFFF); 6759 else /* dual */ 6760 nv->exchange_count = cpu_to_le16(ql2xexchoffld); 6761 6762 /* Enable target mode */ 6763 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6764 6765 /* Disable ini mode, if requested */ 6766 if (qla_tgt_mode_enabled(vha)) 6767 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6768 6769 /* Disable Full Login after LIP */ 6770 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6771 /* Enable initial LIP */ 6772 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6773 if (ql2xtgt_tape_enable) 6774 /* Enable FC Tape support */ 6775 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6776 else 6777 /* Disable FC Tape support */ 6778 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6779 6780 /* Disable Full Login after LIP */ 6781 nv->host_p &= cpu_to_le32(~BIT_10); 6782 6783 /* 6784 * clear BIT 15 explicitly as we have seen at least 6785 * a couple of instances where this was set and this 6786 * was causing the firmware to not be initialized. 6787 */ 6788 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6789 /* Enable target PRLI control */ 6790 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6791 6792 if (IS_QLA25XX(ha)) { 6793 /* Change Loop-prefer to Pt-Pt */ 6794 tmp = ~(BIT_4|BIT_5|BIT_6); 6795 nv->firmware_options_2 &= cpu_to_le32(tmp); 6796 tmp = P2P << 4; 6797 nv->firmware_options_2 |= cpu_to_le32(tmp); 6798 } 6799 } else { 6800 if (ha->tgt.saved_set) { 6801 nv->exchange_count = ha->tgt.saved_exchange_count; 6802 nv->firmware_options_1 = 6803 ha->tgt.saved_firmware_options_1; 6804 nv->firmware_options_2 = 6805 ha->tgt.saved_firmware_options_2; 6806 nv->firmware_options_3 = 6807 ha->tgt.saved_firmware_options_3; 6808 } 6809 return; 6810 } 6811 6812 if (ha->base_qpair->enable_class_2) { 6813 if (vha->flags.init_done) 6814 fc_host_supported_classes(vha->host) = 6815 FC_COS_CLASS2 | FC_COS_CLASS3; 6816 6817 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6818 } else { 6819 if (vha->flags.init_done) 6820 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6821 6822 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6823 } 6824 } 6825 6826 void 6827 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6828 struct init_cb_24xx *icb) 6829 { 6830 struct qla_hw_data *ha = vha->hw; 6831 6832 if (!QLA_TGT_MODE_ENABLED()) 6833 return; 6834 6835 if (ha->tgt.node_name_set) { 6836 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6837 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6838 } 6839 6840 /* disable ZIO at start time. */ 6841 if (!vha->flags.init_done) { 6842 uint32_t tmp; 6843 tmp = le32_to_cpu(icb->firmware_options_2); 6844 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6845 icb->firmware_options_2 = cpu_to_le32(tmp); 6846 } 6847 } 6848 6849 void 6850 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6851 { 6852 struct qla_hw_data *ha = vha->hw; 6853 u32 tmp; 6854 6855 if (!QLA_TGT_MODE_ENABLED()) 6856 return; 6857 6858 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6859 if (!ha->tgt.saved_set) { 6860 /* We save only once */ 6861 ha->tgt.saved_exchange_count = nv->exchange_count; 6862 ha->tgt.saved_firmware_options_1 = 6863 nv->firmware_options_1; 6864 ha->tgt.saved_firmware_options_2 = 6865 nv->firmware_options_2; 6866 ha->tgt.saved_firmware_options_3 = 6867 nv->firmware_options_3; 6868 ha->tgt.saved_set = 1; 6869 } 6870 6871 if (qla_tgt_mode_enabled(vha)) 6872 nv->exchange_count = cpu_to_le16(0xFFFF); 6873 else /* dual */ 6874 nv->exchange_count = cpu_to_le16(ql2xexchoffld); 6875 6876 /* Enable target mode */ 6877 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6878 6879 /* Disable ini mode, if requested */ 6880 if (qla_tgt_mode_enabled(vha)) 6881 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6882 /* Disable Full Login after LIP */ 6883 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6884 /* Enable initial LIP */ 6885 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6886 /* 6887 * clear BIT 15 explicitly as we have seen at 6888 * least a couple of instances where this was set 6889 * and this was causing the firmware to not be 6890 * initialized. 6891 */ 6892 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6893 if (ql2xtgt_tape_enable) 6894 /* Enable FC tape support */ 6895 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6896 else 6897 /* Disable FC tape support */ 6898 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6899 6900 /* Disable Full Login after LIP */ 6901 nv->host_p &= cpu_to_le32(~BIT_10); 6902 /* Enable target PRLI control */ 6903 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6904 6905 /* Change Loop-prefer to Pt-Pt */ 6906 tmp = ~(BIT_4|BIT_5|BIT_6); 6907 nv->firmware_options_2 &= cpu_to_le32(tmp); 6908 tmp = P2P << 4; 6909 nv->firmware_options_2 |= cpu_to_le32(tmp); 6910 } else { 6911 if (ha->tgt.saved_set) { 6912 nv->exchange_count = ha->tgt.saved_exchange_count; 6913 nv->firmware_options_1 = 6914 ha->tgt.saved_firmware_options_1; 6915 nv->firmware_options_2 = 6916 ha->tgt.saved_firmware_options_2; 6917 nv->firmware_options_3 = 6918 ha->tgt.saved_firmware_options_3; 6919 } 6920 return; 6921 } 6922 6923 if (ha->base_qpair->enable_class_2) { 6924 if (vha->flags.init_done) 6925 fc_host_supported_classes(vha->host) = 6926 FC_COS_CLASS2 | FC_COS_CLASS3; 6927 6928 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6929 } else { 6930 if (vha->flags.init_done) 6931 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6932 6933 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6934 } 6935 } 6936 6937 void 6938 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6939 struct init_cb_81xx *icb) 6940 { 6941 struct qla_hw_data *ha = vha->hw; 6942 6943 if (!QLA_TGT_MODE_ENABLED()) 6944 return; 6945 6946 if (ha->tgt.node_name_set) { 6947 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6948 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6949 } 6950 6951 /* disable ZIO at start time. */ 6952 if (!vha->flags.init_done) { 6953 uint32_t tmp; 6954 tmp = le32_to_cpu(icb->firmware_options_2); 6955 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6956 icb->firmware_options_2 = cpu_to_le32(tmp); 6957 } 6958 6959 } 6960 6961 void 6962 qlt_83xx_iospace_config(struct qla_hw_data *ha) 6963 { 6964 if (!QLA_TGT_MODE_ENABLED()) 6965 return; 6966 6967 ha->msix_count += 1; /* For ATIO Q */ 6968 } 6969 6970 6971 void 6972 qlt_modify_vp_config(struct scsi_qla_host *vha, 6973 struct vp_config_entry_24xx *vpmod) 6974 { 6975 /* enable target mode. Bit5 = 1 => disable */ 6976 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 6977 vpmod->options_idx1 &= ~BIT_5; 6978 6979 /* Disable ini mode, if requested. bit4 = 1 => disable */ 6980 if (qla_tgt_mode_enabled(vha)) 6981 vpmod->options_idx1 &= ~BIT_4; 6982 } 6983 6984 void 6985 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6986 { 6987 int rc; 6988 6989 if (!QLA_TGT_MODE_ENABLED()) 6990 return; 6991 6992 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6993 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6994 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6995 } else { 6996 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6997 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6998 } 6999 7000 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7001 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7002 7003 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7004 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7005 qlt_unknown_atio_work_fn); 7006 7007 qlt_clear_mode(base_vha); 7008 7009 rc = btree_init32(&ha->tgt.host_map); 7010 if (rc) 7011 ql_log(ql_log_info, base_vha, 0xd03d, 7012 "Unable to initialize ha->host_map btree\n"); 7013 7014 qlt_update_vp_map(base_vha, SET_VP_IDX); 7015 } 7016 7017 irqreturn_t 7018 qla83xx_msix_atio_q(int irq, void *dev_id) 7019 { 7020 struct rsp_que *rsp; 7021 scsi_qla_host_t *vha; 7022 struct qla_hw_data *ha; 7023 unsigned long flags; 7024 7025 rsp = (struct rsp_que *) dev_id; 7026 ha = rsp->hw; 7027 vha = pci_get_drvdata(ha->pdev); 7028 7029 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7030 7031 qlt_24xx_process_atio_queue(vha, 0); 7032 7033 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7034 7035 return IRQ_HANDLED; 7036 } 7037 7038 static void 7039 qlt_handle_abts_recv_work(struct work_struct *work) 7040 { 7041 struct qla_tgt_sess_op *op = container_of(work, 7042 struct qla_tgt_sess_op, work); 7043 scsi_qla_host_t *vha = op->vha; 7044 struct qla_hw_data *ha = vha->hw; 7045 unsigned long flags; 7046 7047 if (qla2x00_reset_active(vha) || 7048 (op->chip_reset != ha->base_qpair->chip_reset)) 7049 return; 7050 7051 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7052 qlt_24xx_process_atio_queue(vha, 0); 7053 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7054 7055 spin_lock_irqsave(&ha->hardware_lock, flags); 7056 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7057 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7058 7059 kfree(op); 7060 } 7061 7062 void 7063 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7064 response_t *pkt) 7065 { 7066 struct qla_tgt_sess_op *op; 7067 7068 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7069 7070 if (!op) { 7071 /* do not reach for ATIO queue here. This is best effort err 7072 * recovery at this point. 7073 */ 7074 qlt_response_pkt_all_vps(vha, rsp, pkt); 7075 return; 7076 } 7077 7078 memcpy(&op->atio, pkt, sizeof(*pkt)); 7079 op->vha = vha; 7080 op->chip_reset = vha->hw->base_qpair->chip_reset; 7081 op->rsp = rsp; 7082 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7083 queue_work(qla_tgt_wq, &op->work); 7084 return; 7085 } 7086 7087 int 7088 qlt_mem_alloc(struct qla_hw_data *ha) 7089 { 7090 if (!QLA_TGT_MODE_ENABLED()) 7091 return 0; 7092 7093 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7094 sizeof(struct qla_tgt_vp_map), 7095 GFP_KERNEL); 7096 if (!ha->tgt.tgt_vp_map) 7097 return -ENOMEM; 7098 7099 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7100 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7101 &ha->tgt.atio_dma, GFP_KERNEL); 7102 if (!ha->tgt.atio_ring) { 7103 kfree(ha->tgt.tgt_vp_map); 7104 return -ENOMEM; 7105 } 7106 return 0; 7107 } 7108 7109 void 7110 qlt_mem_free(struct qla_hw_data *ha) 7111 { 7112 if (!QLA_TGT_MODE_ENABLED()) 7113 return; 7114 7115 if (ha->tgt.atio_ring) { 7116 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7117 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7118 ha->tgt.atio_dma); 7119 } 7120 kfree(ha->tgt.tgt_vp_map); 7121 } 7122 7123 /* vport_slock to be held by the caller */ 7124 void 7125 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7126 { 7127 void *slot; 7128 u32 key; 7129 int rc; 7130 7131 if (!QLA_TGT_MODE_ENABLED()) 7132 return; 7133 7134 key = vha->d_id.b24; 7135 7136 switch (cmd) { 7137 case SET_VP_IDX: 7138 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7139 break; 7140 case SET_AL_PA: 7141 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7142 if (!slot) { 7143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7144 "Save vha in host_map %p %06x\n", vha, key); 7145 rc = btree_insert32(&vha->hw->tgt.host_map, 7146 key, vha, GFP_ATOMIC); 7147 if (rc) 7148 ql_log(ql_log_info, vha, 0xd03e, 7149 "Unable to insert s_id into host_map: %06x\n", 7150 key); 7151 return; 7152 } 7153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7154 "replace existing vha in host_map %p %06x\n", vha, key); 7155 btree_update32(&vha->hw->tgt.host_map, key, vha); 7156 break; 7157 case RESET_VP_IDX: 7158 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7159 break; 7160 case RESET_AL_PA: 7161 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7162 "clear vha in host_map %p %06x\n", vha, key); 7163 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7164 if (slot) 7165 btree_remove32(&vha->hw->tgt.host_map, key); 7166 vha->d_id.b24 = 0; 7167 break; 7168 } 7169 } 7170 7171 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7172 { 7173 7174 if (!vha->d_id.b24) { 7175 vha->d_id = id; 7176 qlt_update_vp_map(vha, SET_AL_PA); 7177 } else if (vha->d_id.b24 != id.b24) { 7178 qlt_update_vp_map(vha, RESET_AL_PA); 7179 vha->d_id = id; 7180 qlt_update_vp_map(vha, SET_AL_PA); 7181 } 7182 } 7183 7184 static int __init qlt_parse_ini_mode(void) 7185 { 7186 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7187 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7188 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7189 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7190 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7191 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7192 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7193 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7194 else 7195 return false; 7196 7197 return true; 7198 } 7199 7200 int __init qlt_init(void) 7201 { 7202 int ret; 7203 7204 if (!qlt_parse_ini_mode()) { 7205 ql_log(ql_log_fatal, NULL, 0xe06b, 7206 "qlt_parse_ini_mode() failed\n"); 7207 return -EINVAL; 7208 } 7209 7210 if (!QLA_TGT_MODE_ENABLED()) 7211 return 0; 7212 7213 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7214 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7215 qla_tgt_mgmt_cmd), 0, NULL); 7216 if (!qla_tgt_mgmt_cmd_cachep) { 7217 ql_log(ql_log_fatal, NULL, 0xd04b, 7218 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7219 return -ENOMEM; 7220 } 7221 7222 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7223 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7224 0, NULL); 7225 7226 if (!qla_tgt_plogi_cachep) { 7227 ql_log(ql_log_fatal, NULL, 0xe06d, 7228 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7229 ret = -ENOMEM; 7230 goto out_mgmt_cmd_cachep; 7231 } 7232 7233 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7234 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7235 if (!qla_tgt_mgmt_cmd_mempool) { 7236 ql_log(ql_log_fatal, NULL, 0xe06e, 7237 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7238 ret = -ENOMEM; 7239 goto out_plogi_cachep; 7240 } 7241 7242 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7243 if (!qla_tgt_wq) { 7244 ql_log(ql_log_fatal, NULL, 0xe06f, 7245 "alloc_workqueue for qla_tgt_wq failed\n"); 7246 ret = -ENOMEM; 7247 goto out_cmd_mempool; 7248 } 7249 /* 7250 * Return 1 to signal that initiator-mode is being disabled 7251 */ 7252 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7253 7254 out_cmd_mempool: 7255 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7256 out_plogi_cachep: 7257 kmem_cache_destroy(qla_tgt_plogi_cachep); 7258 out_mgmt_cmd_cachep: 7259 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7260 return ret; 7261 } 7262 7263 void qlt_exit(void) 7264 { 7265 if (!QLA_TGT_MODE_ENABLED()) 7266 return; 7267 7268 destroy_workqueue(qla_tgt_wq); 7269 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7270 kmem_cache_destroy(qla_tgt_plogi_cachep); 7271 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7272 } 7273