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 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 145 static inline uint32_t qlt_make_handle(struct qla_qpair *); 146 147 /* 148 * Global Variables 149 */ 150 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 151 struct kmem_cache *qla_tgt_plogi_cachep; 152 static mempool_t *qla_tgt_mgmt_cmd_mempool; 153 static struct workqueue_struct *qla_tgt_wq; 154 static DEFINE_MUTEX(qla_tgt_mutex); 155 static LIST_HEAD(qla_tgt_glist); 156 157 static const char *prot_op_str(u32 prot_op) 158 { 159 switch (prot_op) { 160 case TARGET_PROT_NORMAL: return "NORMAL"; 161 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 162 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 163 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 164 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 165 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 166 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 167 default: return "UNKNOWN"; 168 } 169 } 170 171 /* This API intentionally takes dest as a parameter, rather than returning 172 * int value to avoid caller forgetting to issue wmb() after the store */ 173 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 174 { 175 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 176 *dest = atomic_inc_return(&base_vha->generation_tick); 177 /* memory barrier */ 178 wmb(); 179 } 180 181 /* Might release hw lock, then reaquire!! */ 182 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 183 { 184 /* Send marker if required */ 185 if (unlikely(vha->marker_needed != 0)) { 186 int rc = qla2x00_issue_marker(vha, vha_locked); 187 if (rc != QLA_SUCCESS) { 188 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 189 "qla_target(%d): issue_marker() failed\n", 190 vha->vp_idx); 191 } 192 return rc; 193 } 194 return QLA_SUCCESS; 195 } 196 197 static inline 198 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 199 uint8_t *d_id) 200 { 201 struct scsi_qla_host *host; 202 uint32_t key = 0; 203 204 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) && 205 (vha->d_id.b.al_pa == d_id[2])) 206 return vha; 207 208 key = (uint32_t)d_id[0] << 16; 209 key |= (uint32_t)d_id[1] << 8; 210 key |= (uint32_t)d_id[2]; 211 212 host = btree_lookup32(&vha->hw->tgt.host_map, key); 213 if (!host) 214 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 215 "Unable to find host %06x\n", key); 216 217 return host; 218 } 219 220 static inline 221 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 222 uint16_t vp_idx) 223 { 224 struct qla_hw_data *ha = vha->hw; 225 226 if (vha->vp_idx == vp_idx) 227 return vha; 228 229 BUG_ON(ha->tgt.tgt_vp_map == NULL); 230 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 231 return ha->tgt.tgt_vp_map[vp_idx].vha; 232 233 return NULL; 234 } 235 236 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 237 { 238 unsigned long flags; 239 240 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 241 242 vha->hw->tgt.num_pend_cmds++; 243 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 244 vha->qla_stats.stat_max_pend_cmds = 245 vha->hw->tgt.num_pend_cmds; 246 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 247 } 248 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 249 { 250 unsigned long flags; 251 252 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 253 vha->hw->tgt.num_pend_cmds--; 254 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 255 } 256 257 258 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 259 struct atio_from_isp *atio, uint8_t ha_locked) 260 { 261 struct qla_tgt_sess_op *u; 262 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 263 unsigned long flags; 264 265 if (tgt->tgt_stop) { 266 ql_dbg(ql_dbg_async, vha, 0x502c, 267 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 268 vha->vp_idx); 269 goto out_term; 270 } 271 272 u = kzalloc(sizeof(*u), GFP_ATOMIC); 273 if (u == NULL) 274 goto out_term; 275 276 u->vha = vha; 277 memcpy(&u->atio, atio, sizeof(*atio)); 278 INIT_LIST_HEAD(&u->cmd_list); 279 280 spin_lock_irqsave(&vha->cmd_list_lock, flags); 281 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 282 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 283 284 schedule_delayed_work(&vha->unknown_atio_work, 1); 285 286 out: 287 return; 288 289 out_term: 290 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 291 goto out; 292 } 293 294 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 295 uint8_t ha_locked) 296 { 297 struct qla_tgt_sess_op *u, *t; 298 scsi_qla_host_t *host; 299 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 300 unsigned long flags; 301 uint8_t queued = 0; 302 303 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 304 if (u->aborted) { 305 ql_dbg(ql_dbg_async, vha, 0x502e, 306 "Freeing unknown %s %p, because of Abort\n", 307 "ATIO_TYPE7", u); 308 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 309 &u->atio, ha_locked, 0); 310 goto abort; 311 } 312 313 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 314 if (host != NULL) { 315 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 316 "Requeuing unknown ATIO_TYPE7 %p\n", u); 317 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 318 } else if (tgt->tgt_stop) { 319 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 320 "Freeing unknown %s %p, because tgt is being stopped\n", 321 "ATIO_TYPE7", u); 322 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 323 &u->atio, ha_locked, 0); 324 } else { 325 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 326 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 327 if (!queued) { 328 queued = 1; 329 schedule_delayed_work(&vha->unknown_atio_work, 330 1); 331 } 332 continue; 333 } 334 335 abort: 336 spin_lock_irqsave(&vha->cmd_list_lock, flags); 337 list_del(&u->cmd_list); 338 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 339 kfree(u); 340 } 341 } 342 343 void qlt_unknown_atio_work_fn(struct work_struct *work) 344 { 345 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 346 struct scsi_qla_host, unknown_atio_work); 347 348 qlt_try_to_dequeue_unknown_atios(vha, 0); 349 } 350 351 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 352 struct atio_from_isp *atio, uint8_t ha_locked) 353 { 354 ql_dbg(ql_dbg_tgt, vha, 0xe072, 355 "%s: qla_target(%d): type %x ox_id %04x\n", 356 __func__, vha->vp_idx, atio->u.raw.entry_type, 357 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 358 359 switch (atio->u.raw.entry_type) { 360 case ATIO_TYPE7: 361 { 362 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 363 atio->u.isp24.fcp_hdr.d_id); 364 if (unlikely(NULL == host)) { 365 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 366 "qla_target(%d): Received ATIO_TYPE7 " 367 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 368 atio->u.isp24.fcp_hdr.d_id[0], 369 atio->u.isp24.fcp_hdr.d_id[1], 370 atio->u.isp24.fcp_hdr.d_id[2]); 371 372 373 qlt_queue_unknown_atio(vha, atio, ha_locked); 374 break; 375 } 376 if (unlikely(!list_empty(&vha->unknown_atio_list))) 377 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 378 379 qlt_24xx_atio_pkt(host, atio, ha_locked); 380 break; 381 } 382 383 case IMMED_NOTIFY_TYPE: 384 { 385 struct scsi_qla_host *host = vha; 386 struct imm_ntfy_from_isp *entry = 387 (struct imm_ntfy_from_isp *)atio; 388 389 qlt_issue_marker(vha, ha_locked); 390 391 if ((entry->u.isp24.vp_index != 0xFF) && 392 (entry->u.isp24.nport_handle != 0xFFFF)) { 393 host = qlt_find_host_by_vp_idx(vha, 394 entry->u.isp24.vp_index); 395 if (unlikely(!host)) { 396 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 397 "qla_target(%d): Received " 398 "ATIO (IMMED_NOTIFY_TYPE) " 399 "with unknown vp_index %d\n", 400 vha->vp_idx, entry->u.isp24.vp_index); 401 break; 402 } 403 } 404 qlt_24xx_atio_pkt(host, atio, ha_locked); 405 break; 406 } 407 408 case VP_RPT_ID_IOCB_TYPE: 409 qla24xx_report_id_acquisition(vha, 410 (struct vp_rpt_id_entry_24xx *)atio); 411 break; 412 413 case ABTS_RECV_24XX: 414 { 415 struct abts_recv_from_24xx *entry = 416 (struct abts_recv_from_24xx *)atio; 417 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 418 entry->vp_index); 419 unsigned long flags; 420 421 if (unlikely(!host)) { 422 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 423 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 424 "received, with unknown vp_index %d\n", 425 vha->vp_idx, entry->vp_index); 426 break; 427 } 428 if (!ha_locked) 429 spin_lock_irqsave(&host->hw->hardware_lock, flags); 430 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 431 if (!ha_locked) 432 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 433 break; 434 } 435 436 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 437 438 default: 439 ql_dbg(ql_dbg_tgt, vha, 0xe040, 440 "qla_target(%d): Received unknown ATIO atio " 441 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 442 break; 443 } 444 445 return false; 446 } 447 448 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 449 struct rsp_que *rsp, response_t *pkt) 450 { 451 switch (pkt->entry_type) { 452 case CTIO_CRC2: 453 ql_dbg(ql_dbg_tgt, vha, 0xe073, 454 "qla_target(%d):%s: CRC2 Response pkt\n", 455 vha->vp_idx, __func__); 456 /* fall through */ 457 case CTIO_TYPE7: 458 { 459 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 460 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 461 entry->vp_index); 462 if (unlikely(!host)) { 463 ql_dbg(ql_dbg_tgt, vha, 0xe041, 464 "qla_target(%d): Response pkt (CTIO_TYPE7) " 465 "received, with unknown vp_index %d\n", 466 vha->vp_idx, entry->vp_index); 467 break; 468 } 469 qlt_response_pkt(host, rsp, pkt); 470 break; 471 } 472 473 case IMMED_NOTIFY_TYPE: 474 { 475 struct scsi_qla_host *host = vha; 476 struct imm_ntfy_from_isp *entry = 477 (struct imm_ntfy_from_isp *)pkt; 478 479 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 480 if (unlikely(!host)) { 481 ql_dbg(ql_dbg_tgt, vha, 0xe042, 482 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 483 "received, with unknown vp_index %d\n", 484 vha->vp_idx, entry->u.isp24.vp_index); 485 break; 486 } 487 qlt_response_pkt(host, rsp, pkt); 488 break; 489 } 490 491 case NOTIFY_ACK_TYPE: 492 { 493 struct scsi_qla_host *host = vha; 494 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 495 496 if (0xFF != entry->u.isp24.vp_index) { 497 host = qlt_find_host_by_vp_idx(vha, 498 entry->u.isp24.vp_index); 499 if (unlikely(!host)) { 500 ql_dbg(ql_dbg_tgt, vha, 0xe043, 501 "qla_target(%d): Response " 502 "pkt (NOTIFY_ACK_TYPE) " 503 "received, with unknown " 504 "vp_index %d\n", vha->vp_idx, 505 entry->u.isp24.vp_index); 506 break; 507 } 508 } 509 qlt_response_pkt(host, rsp, pkt); 510 break; 511 } 512 513 case ABTS_RECV_24XX: 514 { 515 struct abts_recv_from_24xx *entry = 516 (struct abts_recv_from_24xx *)pkt; 517 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 518 entry->vp_index); 519 if (unlikely(!host)) { 520 ql_dbg(ql_dbg_tgt, vha, 0xe044, 521 "qla_target(%d): Response pkt " 522 "(ABTS_RECV_24XX) received, with unknown " 523 "vp_index %d\n", vha->vp_idx, entry->vp_index); 524 break; 525 } 526 qlt_response_pkt(host, rsp, pkt); 527 break; 528 } 529 530 case ABTS_RESP_24XX: 531 { 532 struct abts_resp_to_24xx *entry = 533 (struct abts_resp_to_24xx *)pkt; 534 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 535 entry->vp_index); 536 if (unlikely(!host)) { 537 ql_dbg(ql_dbg_tgt, vha, 0xe045, 538 "qla_target(%d): Response pkt " 539 "(ABTS_RECV_24XX) received, with unknown " 540 "vp_index %d\n", vha->vp_idx, entry->vp_index); 541 break; 542 } 543 qlt_response_pkt(host, rsp, pkt); 544 break; 545 } 546 default: 547 qlt_response_pkt(vha, rsp, pkt); 548 break; 549 } 550 551 } 552 553 /* 554 * All qlt_plogi_ack_t operations are protected by hardware_lock 555 */ 556 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 557 struct imm_ntfy_from_isp *ntfy, int type) 558 { 559 struct qla_work_evt *e; 560 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 561 if (!e) 562 return QLA_FUNCTION_FAILED; 563 564 e->u.nack.fcport = fcport; 565 e->u.nack.type = type; 566 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 567 return qla2x00_post_work(vha, e); 568 } 569 570 static 571 void qla2x00_async_nack_sp_done(void *s, int res) 572 { 573 struct srb *sp = (struct srb *)s; 574 struct scsi_qla_host *vha = sp->vha; 575 unsigned long flags; 576 577 ql_dbg(ql_dbg_disc, vha, 0x20f2, 578 "Async done-%s res %x %8phC type %d\n", 579 sp->name, res, sp->fcport->port_name, sp->type); 580 581 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 582 sp->fcport->flags &= ~FCF_ASYNC_SENT; 583 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 584 585 switch (sp->type) { 586 case SRB_NACK_PLOGI: 587 sp->fcport->login_gen++; 588 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 589 sp->fcport->logout_on_delete = 1; 590 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 591 sp->fcport->send_els_logo = 0; 592 break; 593 594 case SRB_NACK_PRLI: 595 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 596 sp->fcport->deleted = 0; 597 sp->fcport->send_els_logo = 0; 598 599 if (!sp->fcport->login_succ && 600 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 601 sp->fcport->login_succ = 1; 602 603 vha->fcport_count++; 604 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 605 qla24xx_sched_upd_fcport(sp->fcport); 606 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 607 } else { 608 sp->fcport->login_retry = 0; 609 sp->fcport->disc_state = DSC_LOGIN_COMPLETE; 610 sp->fcport->deleted = 0; 611 sp->fcport->logout_on_delete = 1; 612 } 613 break; 614 615 case SRB_NACK_LOGO: 616 sp->fcport->login_gen++; 617 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 618 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 619 break; 620 } 621 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 622 623 sp->free(sp); 624 } 625 626 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 627 struct imm_ntfy_from_isp *ntfy, int type) 628 { 629 int rval = QLA_FUNCTION_FAILED; 630 srb_t *sp; 631 char *c = NULL; 632 633 fcport->flags |= FCF_ASYNC_SENT; 634 switch (type) { 635 case SRB_NACK_PLOGI: 636 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 637 c = "PLOGI"; 638 break; 639 case SRB_NACK_PRLI: 640 fcport->fw_login_state = DSC_LS_PRLI_PEND; 641 fcport->deleted = 0; 642 c = "PRLI"; 643 break; 644 case SRB_NACK_LOGO: 645 fcport->fw_login_state = DSC_LS_LOGO_PEND; 646 c = "LOGO"; 647 break; 648 } 649 650 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 651 if (!sp) 652 goto done; 653 654 sp->type = type; 655 sp->name = "nack"; 656 657 sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout; 658 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 659 660 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 661 sp->done = qla2x00_async_nack_sp_done; 662 663 rval = qla2x00_start_sp(sp); 664 if (rval != QLA_SUCCESS) 665 goto done_free_sp; 666 667 ql_dbg(ql_dbg_disc, vha, 0x20f4, 668 "Async-%s %8phC hndl %x %s\n", 669 sp->name, fcport->port_name, sp->handle, c); 670 671 return rval; 672 673 done_free_sp: 674 sp->free(sp); 675 done: 676 fcport->flags &= ~FCF_ASYNC_SENT; 677 return rval; 678 } 679 680 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 681 { 682 fc_port_t *t; 683 unsigned long flags; 684 685 switch (e->u.nack.type) { 686 case SRB_NACK_PRLI: 687 mutex_lock(&vha->vha_tgt.tgt_mutex); 688 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 689 mutex_unlock(&vha->vha_tgt.tgt_mutex); 690 if (t) { 691 ql_log(ql_log_info, vha, 0xd034, 692 "%s create sess success %p", __func__, t); 693 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 694 /* create sess has an extra kref */ 695 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 696 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 697 } 698 break; 699 } 700 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 701 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); 702 } 703 704 void qla24xx_delete_sess_fn(struct work_struct *work) 705 { 706 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 707 struct qla_hw_data *ha = fcport->vha->hw; 708 unsigned long flags; 709 710 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 711 712 if (fcport->se_sess) { 713 ha->tgt.tgt_ops->shutdown_sess(fcport); 714 ha->tgt.tgt_ops->put_sess(fcport); 715 } else { 716 qlt_unreg_sess(fcport); 717 } 718 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 719 } 720 721 /* 722 * Called from qla2x00_reg_remote_port() 723 */ 724 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 725 { 726 struct qla_hw_data *ha = vha->hw; 727 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 728 struct fc_port *sess = fcport; 729 unsigned long flags; 730 731 if (!vha->hw->tgt.tgt_ops) 732 return; 733 734 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 735 if (tgt->tgt_stop) { 736 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 737 return; 738 } 739 740 if (fcport->disc_state == DSC_DELETE_PEND) { 741 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 742 return; 743 } 744 745 if (!sess->se_sess) { 746 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 747 748 mutex_lock(&vha->vha_tgt.tgt_mutex); 749 sess = qlt_create_sess(vha, fcport, false); 750 mutex_unlock(&vha->vha_tgt.tgt_mutex); 751 752 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 753 } else { 754 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 755 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 756 return; 757 } 758 759 if (!kref_get_unless_zero(&sess->sess_kref)) { 760 ql_dbg(ql_dbg_disc, vha, 0x2107, 761 "%s: kref_get fail sess %8phC \n", 762 __func__, sess->port_name); 763 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 764 return; 765 } 766 767 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 768 "qla_target(%u): %ssession for port %8phC " 769 "(loop ID %d) reappeared\n", vha->vp_idx, 770 sess->local ? "local " : "", sess->port_name, sess->loop_id); 771 772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 773 "Reappeared sess %p\n", sess); 774 775 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 776 fcport->loop_id, 777 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 778 } 779 780 if (sess && sess->local) { 781 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 782 "qla_target(%u): local session for " 783 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 784 fcport->port_name, sess->loop_id); 785 sess->local = 0; 786 } 787 ha->tgt.tgt_ops->put_sess(sess); 788 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 789 } 790 791 /* 792 * This is a zero-base ref-counting solution, since hardware_lock 793 * guarantees that ref_count is not modified concurrently. 794 * Upon successful return content of iocb is undefined 795 */ 796 static struct qlt_plogi_ack_t * 797 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 798 struct imm_ntfy_from_isp *iocb) 799 { 800 struct qlt_plogi_ack_t *pla; 801 802 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 803 if (pla->id.b24 == id->b24) { 804 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 805 "%s %d %8phC Term INOT due to new INOT", 806 __func__, __LINE__, 807 pla->iocb.u.isp24.port_name); 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 if (!own) 986 qlt_send_first_logo(vha, &logo); 987 sess->send_els_logo = 0; 988 } 989 990 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 991 int rc; 992 993 if (!own || 994 (own && 995 (own->iocb.u.isp24.status_subcode == ELS_PLOGI))) { 996 rc = qla2x00_post_async_logout_work(vha, sess, 997 NULL); 998 if (rc != QLA_SUCCESS) 999 ql_log(ql_log_warn, vha, 0xf085, 1000 "Schedule logo failed sess %p rc %d\n", 1001 sess, rc); 1002 else 1003 logout_started = true; 1004 } else if (own && (own->iocb.u.isp24.status_subcode == 1005 ELS_PRLI) && ha->flags.rida_fmt2) { 1006 rc = qla2x00_post_async_prlo_work(vha, sess, 1007 NULL); 1008 if (rc != QLA_SUCCESS) 1009 ql_log(ql_log_warn, vha, 0xf085, 1010 "Schedule PRLO failed sess %p rc %d\n", 1011 sess, rc); 1012 else 1013 logout_started = true; 1014 } 1015 } 1016 } 1017 1018 /* 1019 * Release the target session for FC Nexus from fabric module code. 1020 */ 1021 if (sess->se_sess != NULL) 1022 ha->tgt.tgt_ops->free_session(sess); 1023 1024 if (logout_started) { 1025 bool traced = false; 1026 1027 while (!READ_ONCE(sess->logout_completed)) { 1028 if (!traced) { 1029 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 1030 "%s: waiting for sess %p logout\n", 1031 __func__, sess); 1032 traced = true; 1033 } 1034 msleep(100); 1035 } 1036 1037 ql_dbg(ql_dbg_disc, vha, 0xf087, 1038 "%s: sess %p logout completed\n", __func__, sess); 1039 } 1040 1041 if (sess->logo_ack_needed) { 1042 sess->logo_ack_needed = 0; 1043 qla24xx_async_notify_ack(vha, sess, 1044 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1045 } 1046 1047 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1048 if (sess->se_sess) { 1049 sess->se_sess = NULL; 1050 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1051 tgt->sess_count--; 1052 } 1053 1054 sess->disc_state = DSC_DELETED; 1055 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1056 sess->deleted = QLA_SESS_DELETED; 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 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1077 1078 if (con) { 1079 iocb = &con->iocb; 1080 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1081 "se_sess %p / sess %p port %8phC is gone," 1082 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1083 sess->se_sess, sess, sess->port_name, 1084 own ? "releasing own PLOGI" : "no own PLOGI pending", 1085 own ? own->ref_count : -1, 1086 iocb->u.isp24.port_name, con->ref_count); 1087 qlt_plogi_ack_unref(vha, con); 1088 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1089 } else { 1090 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1091 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1092 sess->se_sess, sess, sess->port_name, 1093 own ? "releasing own PLOGI" : 1094 "no own PLOGI pending", 1095 own ? own->ref_count : -1); 1096 } 1097 1098 if (own) { 1099 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1100 qlt_plogi_ack_unref(vha, own); 1101 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1102 } 1103 } 1104 1105 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1106 1107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1108 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1109 sess, sess->port_name, vha->fcport_count); 1110 1111 if (tgt && (tgt->sess_count == 0)) 1112 wake_up_all(&tgt->waitQ); 1113 1114 if (vha->fcport_count == 0) 1115 wake_up_all(&vha->fcport_waitQ); 1116 1117 base_vha = pci_get_drvdata(ha->pdev); 1118 1119 sess->free_pending = 0; 1120 1121 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1122 return; 1123 1124 if ((!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1125 switch (vha->host->active_mode) { 1126 case MODE_INITIATOR: 1127 case MODE_DUAL: 1128 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1129 qla2xxx_wake_dpc(vha); 1130 break; 1131 case MODE_TARGET: 1132 default: 1133 /* no-op */ 1134 break; 1135 } 1136 } 1137 } 1138 1139 /* ha->tgt.sess_lock supposed to be held on entry */ 1140 void qlt_unreg_sess(struct fc_port *sess) 1141 { 1142 struct scsi_qla_host *vha = sess->vha; 1143 unsigned long flags; 1144 1145 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1146 "%s sess %p for deletion %8phC\n", 1147 __func__, sess, sess->port_name); 1148 1149 spin_lock_irqsave(&sess->vha->work_lock, flags); 1150 if (sess->free_pending) { 1151 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1152 return; 1153 } 1154 sess->free_pending = 1; 1155 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1156 1157 if (sess->se_sess) 1158 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1159 1160 qla2x00_mark_device_lost(vha, sess, 0, 0); 1161 1162 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1163 sess->disc_state = DSC_DELETE_PEND; 1164 sess->last_rscn_gen = sess->rscn_gen; 1165 sess->last_login_gen = sess->login_gen; 1166 1167 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1168 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1169 sess->nvme_flag |= NVME_FLAG_DELETING; 1170 schedule_work(&sess->nvme_del_work); 1171 } else { 1172 INIT_WORK(&sess->free_work, qlt_free_session_done); 1173 schedule_work(&sess->free_work); 1174 } 1175 } 1176 EXPORT_SYMBOL(qlt_unreg_sess); 1177 1178 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1179 { 1180 struct qla_hw_data *ha = vha->hw; 1181 struct fc_port *sess = NULL; 1182 uint16_t loop_id; 1183 int res = 0; 1184 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1185 unsigned long flags; 1186 1187 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1188 if (loop_id == 0xFFFF) { 1189 /* Global event */ 1190 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1191 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1192 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1193 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1194 } else { 1195 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1196 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1197 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1198 } 1199 1200 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1201 "Using sess for qla_tgt_reset: %p\n", sess); 1202 if (!sess) { 1203 res = -ESRCH; 1204 return res; 1205 } 1206 1207 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1208 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1209 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1210 mcmd, loop_id); 1211 1212 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1213 } 1214 1215 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1216 { 1217 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1218 sess->logout_on_delete = 0; 1219 sess->logo_ack_needed = 0; 1220 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1221 sess->scan_state = 0; 1222 } 1223 } 1224 1225 void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1226 { 1227 struct qla_tgt *tgt = sess->tgt; 1228 unsigned long flags; 1229 u16 sec; 1230 1231 switch (sess->disc_state) { 1232 case DSC_DELETE_PEND: 1233 return; 1234 case DSC_DELETED: 1235 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1236 wake_up_all(&tgt->waitQ); 1237 if (sess->vha->fcport_count == 0) 1238 wake_up_all(&sess->vha->fcport_waitQ); 1239 1240 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1241 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1242 return; 1243 break; 1244 case DSC_UPD_FCPORT: 1245 /* 1246 * This port is not done reporting to upper layer. 1247 * let it finish 1248 */ 1249 sess->next_disc_state = DSC_DELETE_PEND; 1250 sec = jiffies_to_msecs(jiffies - 1251 sess->jiffies_at_registration)/1000; 1252 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1253 sess->sec_since_registration = sec; 1254 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1255 "%s %8phC : Slow Rport registration(%d Sec)\n", 1256 __func__, sess->port_name, sec); 1257 } 1258 return; 1259 default: 1260 break; 1261 } 1262 1263 spin_lock_irqsave(&sess->vha->work_lock, flags); 1264 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1265 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1266 return; 1267 } 1268 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1269 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1270 1271 sess->disc_state = DSC_DELETE_PEND; 1272 1273 qla24xx_chk_fcp_state(sess); 1274 1275 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1276 "Scheduling sess %p for deletion %8phC\n", 1277 sess, sess->port_name); 1278 1279 INIT_WORK(&sess->del_work, qla24xx_delete_sess_fn); 1280 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1281 } 1282 1283 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1284 { 1285 struct fc_port *sess; 1286 scsi_qla_host_t *vha = tgt->vha; 1287 1288 list_for_each_entry(sess, &vha->vp_fcports, list) { 1289 if (sess->se_sess) 1290 qlt_schedule_sess_for_deletion(sess); 1291 } 1292 1293 /* At this point tgt could be already dead */ 1294 } 1295 1296 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1297 uint16_t *loop_id) 1298 { 1299 struct qla_hw_data *ha = vha->hw; 1300 dma_addr_t gid_list_dma; 1301 struct gid_list_info *gid_list; 1302 char *id_iter; 1303 int res, rc, i; 1304 uint16_t entries; 1305 1306 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1307 &gid_list_dma, GFP_KERNEL); 1308 if (!gid_list) { 1309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1310 "qla_target(%d): DMA Alloc failed of %u\n", 1311 vha->vp_idx, qla2x00_gid_list_size(ha)); 1312 return -ENOMEM; 1313 } 1314 1315 /* Get list of logged in devices */ 1316 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1317 if (rc != QLA_SUCCESS) { 1318 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1319 "qla_target(%d): get_id_list() failed: %x\n", 1320 vha->vp_idx, rc); 1321 res = -EBUSY; 1322 goto out_free_id_list; 1323 } 1324 1325 id_iter = (char *)gid_list; 1326 res = -ENOENT; 1327 for (i = 0; i < entries; i++) { 1328 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1329 if ((gid->al_pa == s_id[2]) && 1330 (gid->area == s_id[1]) && 1331 (gid->domain == s_id[0])) { 1332 *loop_id = le16_to_cpu(gid->loop_id); 1333 res = 0; 1334 break; 1335 } 1336 id_iter += ha->gid_list_info_size; 1337 } 1338 1339 out_free_id_list: 1340 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1341 gid_list, gid_list_dma); 1342 return res; 1343 } 1344 1345 /* 1346 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1347 * Caller must put it. 1348 */ 1349 static struct fc_port *qlt_create_sess( 1350 struct scsi_qla_host *vha, 1351 fc_port_t *fcport, 1352 bool local) 1353 { 1354 struct qla_hw_data *ha = vha->hw; 1355 struct fc_port *sess = fcport; 1356 unsigned long flags; 1357 1358 if (vha->vha_tgt.qla_tgt->tgt_stop) 1359 return NULL; 1360 1361 if (fcport->se_sess) { 1362 if (!kref_get_unless_zero(&sess->sess_kref)) { 1363 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1364 "%s: kref_get_unless_zero failed for %8phC\n", 1365 __func__, sess->port_name); 1366 return NULL; 1367 } 1368 return fcport; 1369 } 1370 sess->tgt = vha->vha_tgt.qla_tgt; 1371 sess->local = local; 1372 1373 /* 1374 * Under normal circumstances we want to logout from firmware when 1375 * session eventually ends and release corresponding nport handle. 1376 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1377 * code will adjust these flags as necessary. 1378 */ 1379 sess->logout_on_delete = 1; 1380 sess->keep_nport_handle = 0; 1381 sess->logout_completed = 0; 1382 1383 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1384 &fcport->port_name[0], sess) < 0) { 1385 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1386 "(%d) %8phC check_initiator_node_acl failed\n", 1387 vha->vp_idx, fcport->port_name); 1388 return NULL; 1389 } else { 1390 kref_init(&fcport->sess_kref); 1391 /* 1392 * Take an extra reference to ->sess_kref here to handle 1393 * fc_port access across ->tgt.sess_lock reaquire. 1394 */ 1395 if (!kref_get_unless_zero(&sess->sess_kref)) { 1396 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1397 "%s: kref_get_unless_zero failed for %8phC\n", 1398 __func__, sess->port_name); 1399 return NULL; 1400 } 1401 1402 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1403 if (!IS_SW_RESV_ADDR(sess->d_id)) 1404 vha->vha_tgt.qla_tgt->sess_count++; 1405 1406 qlt_do_generation_tick(vha, &sess->generation); 1407 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1408 } 1409 1410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1411 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1412 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1413 vha->vha_tgt.qla_tgt->sess_count); 1414 1415 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1416 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1417 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1418 vha->vp_idx, local ? "local " : "", fcport->port_name, 1419 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1420 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1421 1422 return sess; 1423 } 1424 1425 /* 1426 * max_gen - specifies maximum session generation 1427 * at which this deletion requestion is still valid 1428 */ 1429 void 1430 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1431 { 1432 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1433 struct fc_port *sess = fcport; 1434 unsigned long flags; 1435 1436 if (!vha->hw->tgt.tgt_ops) 1437 return; 1438 1439 if (!tgt) 1440 return; 1441 1442 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1443 if (tgt->tgt_stop) { 1444 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1445 return; 1446 } 1447 if (!sess->se_sess) { 1448 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1449 return; 1450 } 1451 1452 if (max_gen - sess->generation < 0) { 1453 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1455 "Ignoring stale deletion request for se_sess %p / sess %p" 1456 " for port %8phC, req_gen %d, sess_gen %d\n", 1457 sess->se_sess, sess, sess->port_name, max_gen, 1458 sess->generation); 1459 return; 1460 } 1461 1462 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1463 1464 sess->local = 1; 1465 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1466 qlt_schedule_sess_for_deletion(sess); 1467 } 1468 1469 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1470 { 1471 struct qla_hw_data *ha = tgt->ha; 1472 unsigned long flags; 1473 int res; 1474 /* 1475 * We need to protect against race, when tgt is freed before or 1476 * inside wake_up() 1477 */ 1478 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1479 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1480 "tgt %p, sess_count=%d\n", 1481 tgt, tgt->sess_count); 1482 res = (tgt->sess_count == 0); 1483 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1484 1485 return res; 1486 } 1487 1488 /* Called by tcm_qla2xxx configfs code */ 1489 int qlt_stop_phase1(struct qla_tgt *tgt) 1490 { 1491 struct scsi_qla_host *vha = tgt->vha; 1492 struct qla_hw_data *ha = tgt->ha; 1493 unsigned long flags; 1494 1495 mutex_lock(&ha->optrom_mutex); 1496 mutex_lock(&qla_tgt_mutex); 1497 1498 if (tgt->tgt_stop || tgt->tgt_stopped) { 1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1500 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1501 mutex_unlock(&qla_tgt_mutex); 1502 mutex_unlock(&ha->optrom_mutex); 1503 return -EPERM; 1504 } 1505 1506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1507 vha->host_no, vha); 1508 /* 1509 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1510 * Lock is needed, because we still can get an incoming packet. 1511 */ 1512 mutex_lock(&vha->vha_tgt.tgt_mutex); 1513 tgt->tgt_stop = 1; 1514 qlt_clear_tgt_db(tgt); 1515 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1516 mutex_unlock(&qla_tgt_mutex); 1517 1518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1519 "Waiting for sess works (tgt %p)", tgt); 1520 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1521 while (!list_empty(&tgt->sess_works_list)) { 1522 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1523 flush_scheduled_work(); 1524 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1525 } 1526 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1527 1528 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1529 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1530 1531 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1532 1533 /* Big hammer */ 1534 if (!ha->flags.host_shutting_down && 1535 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1536 qlt_disable_vha(vha); 1537 1538 /* Wait for sessions to clear out (just in case) */ 1539 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1540 mutex_unlock(&ha->optrom_mutex); 1541 1542 return 0; 1543 } 1544 EXPORT_SYMBOL(qlt_stop_phase1); 1545 1546 /* Called by tcm_qla2xxx configfs code */ 1547 void qlt_stop_phase2(struct qla_tgt *tgt) 1548 { 1549 scsi_qla_host_t *vha = tgt->vha; 1550 1551 if (tgt->tgt_stopped) { 1552 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1553 "Already in tgt->tgt_stopped state\n"); 1554 dump_stack(); 1555 return; 1556 } 1557 if (!tgt->tgt_stop) { 1558 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1559 "%s: phase1 stop is not completed\n", __func__); 1560 dump_stack(); 1561 return; 1562 } 1563 1564 mutex_lock(&vha->vha_tgt.tgt_mutex); 1565 tgt->tgt_stop = 0; 1566 tgt->tgt_stopped = 1; 1567 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1568 1569 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1570 tgt); 1571 1572 switch (vha->qlini_mode) { 1573 case QLA2XXX_INI_MODE_EXCLUSIVE: 1574 vha->flags.online = 1; 1575 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1576 break; 1577 default: 1578 break; 1579 } 1580 } 1581 EXPORT_SYMBOL(qlt_stop_phase2); 1582 1583 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1584 static void qlt_release(struct qla_tgt *tgt) 1585 { 1586 scsi_qla_host_t *vha = tgt->vha; 1587 void *node; 1588 u64 key = 0; 1589 u16 i; 1590 struct qla_qpair_hint *h; 1591 struct qla_hw_data *ha = vha->hw; 1592 1593 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop && 1594 !tgt->tgt_stopped) 1595 qlt_stop_phase1(tgt); 1596 1597 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1598 qlt_stop_phase2(tgt); 1599 1600 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1601 unsigned long flags; 1602 1603 h = &tgt->qphints[i]; 1604 if (h->qpair) { 1605 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1606 list_del(&h->hint_elem); 1607 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1608 h->qpair = NULL; 1609 } 1610 } 1611 kfree(tgt->qphints); 1612 mutex_lock(&qla_tgt_mutex); 1613 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1614 mutex_unlock(&qla_tgt_mutex); 1615 1616 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1617 btree_remove64(&tgt->lun_qpair_map, key); 1618 1619 btree_destroy64(&tgt->lun_qpair_map); 1620 1621 if (vha->vp_idx) 1622 if (ha->tgt.tgt_ops && 1623 ha->tgt.tgt_ops->remove_target && 1624 vha->vha_tgt.target_lport_ptr) 1625 ha->tgt.tgt_ops->remove_target(vha); 1626 1627 vha->vha_tgt.qla_tgt = NULL; 1628 1629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1630 "Release of tgt %p finished\n", tgt); 1631 1632 kfree(tgt); 1633 } 1634 1635 /* ha->hardware_lock supposed to be held on entry */ 1636 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1637 const void *param, unsigned int param_size) 1638 { 1639 struct qla_tgt_sess_work_param *prm; 1640 unsigned long flags; 1641 1642 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1643 if (!prm) { 1644 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1645 "qla_target(%d): Unable to create session " 1646 "work, command will be refused", 0); 1647 return -ENOMEM; 1648 } 1649 1650 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1651 "Scheduling work (type %d, prm %p)" 1652 " to find session for param %p (size %d, tgt %p)\n", 1653 type, prm, param, param_size, tgt); 1654 1655 prm->type = type; 1656 memcpy(&prm->tm_iocb, param, param_size); 1657 1658 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1659 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1660 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1661 1662 schedule_work(&tgt->sess_work); 1663 1664 return 0; 1665 } 1666 1667 /* 1668 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1669 */ 1670 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1671 struct imm_ntfy_from_isp *ntfy, 1672 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1673 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1674 { 1675 struct scsi_qla_host *vha = qpair->vha; 1676 struct qla_hw_data *ha = vha->hw; 1677 request_t *pkt; 1678 struct nack_to_isp *nack; 1679 1680 if (!ha->flags.fw_started) 1681 return; 1682 1683 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1684 1685 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1686 if (!pkt) { 1687 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1688 "qla_target(%d): %s failed: unable to allocate " 1689 "request packet\n", vha->vp_idx, __func__); 1690 return; 1691 } 1692 1693 if (vha->vha_tgt.qla_tgt != NULL) 1694 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1695 1696 pkt->entry_type = NOTIFY_ACK_TYPE; 1697 pkt->entry_count = 1; 1698 1699 nack = (struct nack_to_isp *)pkt; 1700 nack->ox_id = ntfy->ox_id; 1701 1702 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1703 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1704 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1705 nack->u.isp24.flags = ntfy->u.isp24.flags & 1706 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1707 } 1708 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1709 nack->u.isp24.status = ntfy->u.isp24.status; 1710 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1711 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1712 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1713 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1714 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1715 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1716 nack->u.isp24.srr_reject_code = srr_reject_code; 1717 nack->u.isp24.srr_reject_code_expl = srr_explan; 1718 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1719 1720 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1721 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1722 vha->vp_idx, nack->u.isp24.status); 1723 1724 /* Memory Barrier */ 1725 wmb(); 1726 qla2x00_start_iocbs(vha, qpair->req); 1727 } 1728 1729 static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1730 { 1731 struct scsi_qla_host *vha = mcmd->vha; 1732 struct qla_hw_data *ha = vha->hw; 1733 struct abts_resp_to_24xx *resp; 1734 uint32_t f_ctl, h; 1735 uint8_t *p; 1736 int rc; 1737 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1738 struct qla_qpair *qpair = mcmd->qpair; 1739 1740 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1741 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1742 ha, mcmd->fc_tm_rsp); 1743 1744 rc = qlt_check_reserve_free_req(qpair, 1); 1745 if (rc) { 1746 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1747 "qla_target(%d): %s failed: unable to allocate request packet\n", 1748 vha->vp_idx, __func__); 1749 return -EAGAIN; 1750 } 1751 1752 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1753 memset(resp, 0, sizeof(*resp)); 1754 1755 h = qlt_make_handle(qpair); 1756 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1757 /* 1758 * CTIO type 7 from the firmware doesn't provide a way to 1759 * know the initiator's LOOP ID, hence we can't find 1760 * the session and, so, the command. 1761 */ 1762 return -EAGAIN; 1763 } else { 1764 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1765 } 1766 1767 resp->handle = MAKE_HANDLE(qpair->req->id, h); 1768 resp->entry_type = ABTS_RESP_24XX; 1769 resp->entry_count = 1; 1770 resp->nport_handle = abts->nport_handle; 1771 resp->vp_index = vha->vp_idx; 1772 resp->sof_type = abts->sof_type; 1773 resp->exchange_address = abts->exchange_address; 1774 resp->fcp_hdr_le = abts->fcp_hdr_le; 1775 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1776 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1777 F_CTL_SEQ_INITIATIVE); 1778 p = (uint8_t *)&f_ctl; 1779 resp->fcp_hdr_le.f_ctl[0] = *p++; 1780 resp->fcp_hdr_le.f_ctl[1] = *p++; 1781 resp->fcp_hdr_le.f_ctl[2] = *p; 1782 1783 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1784 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1785 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1786 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1787 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1788 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1789 1790 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1791 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1792 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1793 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1794 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1795 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1796 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1797 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1798 } else { 1799 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1800 resp->payload.ba_rjt.reason_code = 1801 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1802 /* Other bytes are zero */ 1803 } 1804 1805 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1806 1807 /* Memory Barrier */ 1808 wmb(); 1809 if (qpair->reqq_start_iocbs) 1810 qpair->reqq_start_iocbs(qpair); 1811 else 1812 qla2x00_start_iocbs(vha, qpair->req); 1813 1814 return rc; 1815 } 1816 1817 /* 1818 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1819 */ 1820 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1821 struct abts_recv_from_24xx *abts, uint32_t status, 1822 bool ids_reversed) 1823 { 1824 struct scsi_qla_host *vha = qpair->vha; 1825 struct qla_hw_data *ha = vha->hw; 1826 struct abts_resp_to_24xx *resp; 1827 uint32_t f_ctl; 1828 uint8_t *p; 1829 1830 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1831 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1832 ha, abts, status); 1833 1834 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1835 NULL); 1836 if (!resp) { 1837 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1838 "qla_target(%d): %s failed: unable to allocate " 1839 "request packet", vha->vp_idx, __func__); 1840 return; 1841 } 1842 1843 resp->entry_type = ABTS_RESP_24XX; 1844 resp->handle = QLA_TGT_SKIP_HANDLE; 1845 resp->entry_count = 1; 1846 resp->nport_handle = abts->nport_handle; 1847 resp->vp_index = vha->vp_idx; 1848 resp->sof_type = abts->sof_type; 1849 resp->exchange_address = abts->exchange_address; 1850 resp->fcp_hdr_le = abts->fcp_hdr_le; 1851 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1852 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1853 F_CTL_SEQ_INITIATIVE); 1854 p = (uint8_t *)&f_ctl; 1855 resp->fcp_hdr_le.f_ctl[0] = *p++; 1856 resp->fcp_hdr_le.f_ctl[1] = *p++; 1857 resp->fcp_hdr_le.f_ctl[2] = *p; 1858 if (ids_reversed) { 1859 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1860 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1861 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1862 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1863 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1864 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1865 } else { 1866 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1867 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1868 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1869 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1870 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1871 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1872 } 1873 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1874 if (status == FCP_TMF_CMPL) { 1875 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1876 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1877 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1878 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1879 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1880 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1881 } else { 1882 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1883 resp->payload.ba_rjt.reason_code = 1884 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1885 /* Other bytes are zero */ 1886 } 1887 1888 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1889 1890 /* Memory Barrier */ 1891 wmb(); 1892 if (qpair->reqq_start_iocbs) 1893 qpair->reqq_start_iocbs(qpair); 1894 else 1895 qla2x00_start_iocbs(vha, qpair->req); 1896 } 1897 1898 /* 1899 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1900 */ 1901 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1902 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1903 { 1904 struct ctio7_to_24xx *ctio; 1905 u16 tmp; 1906 struct abts_recv_from_24xx *entry; 1907 1908 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1909 if (ctio == NULL) { 1910 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1911 "qla_target(%d): %s failed: unable to allocate " 1912 "request packet\n", vha->vp_idx, __func__); 1913 return; 1914 } 1915 1916 if (mcmd) 1917 /* abts from remote port */ 1918 entry = &mcmd->orig_iocb.abts; 1919 else 1920 /* abts from this driver. */ 1921 entry = (struct abts_recv_from_24xx *)pkt; 1922 1923 /* 1924 * We've got on entrance firmware's response on by us generated 1925 * ABTS response. So, in it ID fields are reversed. 1926 */ 1927 1928 ctio->entry_type = CTIO_TYPE7; 1929 ctio->entry_count = 1; 1930 ctio->nport_handle = entry->nport_handle; 1931 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1932 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1933 ctio->vp_index = vha->vp_idx; 1934 ctio->exchange_addr = entry->exchange_addr_to_abort; 1935 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1936 1937 if (mcmd) { 1938 ctio->initiator_id[0] = entry->fcp_hdr_le.s_id[0]; 1939 ctio->initiator_id[1] = entry->fcp_hdr_le.s_id[1]; 1940 ctio->initiator_id[2] = entry->fcp_hdr_le.s_id[2]; 1941 1942 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1943 tmp |= (mcmd->abort_io_attr << 9); 1944 else if (qpair->retry_term_cnt & 1) 1945 tmp |= (0x4 << 9); 1946 } else { 1947 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1948 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1949 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1950 1951 if (qpair->retry_term_cnt & 1) 1952 tmp |= (0x4 << 9); 1953 } 1954 ctio->u.status1.flags = cpu_to_le16(tmp); 1955 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1956 1957 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1958 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1959 le16_to_cpu(ctio->u.status1.flags), 1960 le16_to_cpu(ctio->u.status1.ox_id), 1961 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1962 1963 /* Memory Barrier */ 1964 wmb(); 1965 if (qpair->reqq_start_iocbs) 1966 qpair->reqq_start_iocbs(qpair); 1967 else 1968 qla2x00_start_iocbs(vha, qpair->req); 1969 1970 if (mcmd) 1971 qlt_build_abts_resp_iocb(mcmd); 1972 else 1973 qlt_24xx_send_abts_resp(qpair, 1974 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1975 1976 } 1977 1978 /* drop cmds for the given lun 1979 * XXX only looks for cmds on the port through which lun reset was recieved 1980 * XXX does not go through the list of other port (which may have cmds 1981 * for the same lun) 1982 */ 1983 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1984 u64 lun, uint8_t *s_id) 1985 { 1986 struct qla_tgt_sess_op *op; 1987 struct qla_tgt_cmd *cmd; 1988 uint32_t key; 1989 unsigned long flags; 1990 1991 key = sid_to_key(s_id); 1992 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1993 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1994 uint32_t op_key; 1995 u64 op_lun; 1996 1997 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1998 op_lun = scsilun_to_int( 1999 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2000 if (op_key == key && op_lun == lun) 2001 op->aborted = true; 2002 } 2003 2004 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 2005 uint32_t op_key; 2006 u64 op_lun; 2007 2008 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 2009 op_lun = scsilun_to_int( 2010 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 2011 if (op_key == key && op_lun == lun) 2012 op->aborted = true; 2013 } 2014 2015 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 2016 uint32_t cmd_key; 2017 u64 cmd_lun; 2018 2019 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 2020 cmd_lun = scsilun_to_int( 2021 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 2022 if (cmd_key == key && cmd_lun == lun) 2023 cmd->aborted = 1; 2024 } 2025 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 2026 } 2027 2028 static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 2029 uint64_t unpacked_lun) 2030 { 2031 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2032 struct qla_qpair_hint *h = NULL; 2033 2034 if (vha->flags.qpairs_available) { 2035 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2036 if (!h) 2037 h = &tgt->qphints[0]; 2038 } else { 2039 h = &tgt->qphints[0]; 2040 } 2041 2042 return h; 2043 } 2044 2045 static void qlt_do_tmr_work(struct work_struct *work) 2046 { 2047 struct qla_tgt_mgmt_cmd *mcmd = 2048 container_of(work, struct qla_tgt_mgmt_cmd, work); 2049 struct qla_hw_data *ha = mcmd->vha->hw; 2050 int rc = EIO; 2051 uint32_t tag; 2052 unsigned long flags; 2053 2054 switch (mcmd->tmr_func) { 2055 case QLA_TGT_ABTS: 2056 tag = mcmd->orig_iocb.abts.exchange_addr_to_abort; 2057 break; 2058 default: 2059 tag = 0; 2060 break; 2061 } 2062 2063 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2064 mcmd->tmr_func, tag); 2065 2066 if (rc != 0) { 2067 spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); 2068 switch (mcmd->tmr_func) { 2069 case QLA_TGT_ABTS: 2070 mcmd->fc_tm_rsp = FCP_TMF_REJECTED; 2071 qlt_build_abts_resp_iocb(mcmd); 2072 break; 2073 case QLA_TGT_LUN_RESET: 2074 case QLA_TGT_CLEAR_TS: 2075 case QLA_TGT_ABORT_TS: 2076 case QLA_TGT_CLEAR_ACA: 2077 case QLA_TGT_TARGET_RESET: 2078 qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, 2079 qla_sam_status); 2080 break; 2081 2082 case QLA_TGT_ABORT_ALL: 2083 case QLA_TGT_NEXUS_LOSS_SESS: 2084 case QLA_TGT_NEXUS_LOSS: 2085 qlt_send_notify_ack(mcmd->qpair, 2086 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2087 break; 2088 } 2089 spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); 2090 2091 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2092 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2093 mcmd->vha->vp_idx, rc); 2094 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2095 } 2096 } 2097 2098 /* ha->hardware_lock supposed to be held on entry */ 2099 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2100 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2101 { 2102 struct qla_hw_data *ha = vha->hw; 2103 struct qla_tgt_mgmt_cmd *mcmd; 2104 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2105 2106 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2107 "qla_target(%d): task abort (tag=%d)\n", 2108 vha->vp_idx, abts->exchange_addr_to_abort); 2109 2110 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2111 if (mcmd == NULL) { 2112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2113 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2114 vha->vp_idx, __func__); 2115 return -ENOMEM; 2116 } 2117 memset(mcmd, 0, sizeof(*mcmd)); 2118 mcmd->cmd_type = TYPE_TGT_TMCMD; 2119 mcmd->sess = sess; 2120 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2121 mcmd->reset_count = ha->base_qpair->chip_reset; 2122 mcmd->tmr_func = QLA_TGT_ABTS; 2123 mcmd->qpair = h->qpair; 2124 mcmd->vha = vha; 2125 2126 /* 2127 * LUN is looked up by target-core internally based on the passed 2128 * abts->exchange_addr_to_abort tag. 2129 */ 2130 mcmd->se_cmd.cpuid = h->cpuid; 2131 2132 if (ha->tgt.tgt_ops->find_cmd_by_tag) { 2133 struct qla_tgt_cmd *abort_cmd; 2134 2135 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2136 abts->exchange_addr_to_abort); 2137 if (abort_cmd && abort_cmd->qpair) { 2138 mcmd->qpair = abort_cmd->qpair; 2139 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2140 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2141 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2142 } 2143 } 2144 2145 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2146 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2147 2148 return 0; 2149 } 2150 2151 /* 2152 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2153 */ 2154 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2155 struct abts_recv_from_24xx *abts) 2156 { 2157 struct qla_hw_data *ha = vha->hw; 2158 struct fc_port *sess; 2159 uint32_t tag = abts->exchange_addr_to_abort; 2160 uint8_t s_id[3]; 2161 int rc; 2162 unsigned long flags; 2163 2164 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2165 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2166 "qla_target(%d): ABTS: Abort Sequence not " 2167 "supported\n", vha->vp_idx); 2168 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2169 false); 2170 return; 2171 } 2172 2173 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2174 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2175 "qla_target(%d): ABTS: Unknown Exchange " 2176 "Address received\n", vha->vp_idx); 2177 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2178 false); 2179 return; 2180 } 2181 2182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2183 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2184 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 2185 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 2186 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2187 2188 s_id[0] = abts->fcp_hdr_le.s_id[2]; 2189 s_id[1] = abts->fcp_hdr_le.s_id[1]; 2190 s_id[2] = abts->fcp_hdr_le.s_id[0]; 2191 2192 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2193 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2194 if (!sess) { 2195 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2196 "qla_target(%d): task abort for non-existent session\n", 2197 vha->vp_idx); 2198 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2199 2200 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2201 false); 2202 return; 2203 } 2204 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2205 2206 2207 if (sess->deleted) { 2208 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2209 false); 2210 return; 2211 } 2212 2213 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2214 if (rc != 0) { 2215 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2216 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2217 vha->vp_idx, rc); 2218 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2219 false); 2220 return; 2221 } 2222 } 2223 2224 /* 2225 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2226 */ 2227 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2228 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2229 { 2230 struct scsi_qla_host *ha = mcmd->vha; 2231 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2232 struct ctio7_to_24xx *ctio; 2233 uint16_t temp; 2234 2235 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2236 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2237 ha, atio, resp_code); 2238 2239 2240 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2241 if (ctio == NULL) { 2242 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2243 "qla_target(%d): %s failed: unable to allocate " 2244 "request packet\n", ha->vp_idx, __func__); 2245 return; 2246 } 2247 2248 ctio->entry_type = CTIO_TYPE7; 2249 ctio->entry_count = 1; 2250 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2251 ctio->nport_handle = mcmd->sess->loop_id; 2252 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2253 ctio->vp_index = ha->vp_idx; 2254 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2255 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2256 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2257 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2258 temp = (atio->u.isp24.attr << 9)| 2259 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2260 ctio->u.status1.flags = cpu_to_le16(temp); 2261 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2262 ctio->u.status1.ox_id = cpu_to_le16(temp); 2263 ctio->u.status1.scsi_status = 2264 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2265 ctio->u.status1.response_len = cpu_to_le16(8); 2266 ctio->u.status1.sense_data[0] = resp_code; 2267 2268 /* Memory Barrier */ 2269 wmb(); 2270 if (qpair->reqq_start_iocbs) 2271 qpair->reqq_start_iocbs(qpair); 2272 else 2273 qla2x00_start_iocbs(ha, qpair->req); 2274 } 2275 2276 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2277 { 2278 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2279 } 2280 EXPORT_SYMBOL(qlt_free_mcmd); 2281 2282 /* 2283 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2284 * reacquire 2285 */ 2286 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2287 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2288 { 2289 struct atio_from_isp *atio = &cmd->atio; 2290 struct ctio7_to_24xx *ctio; 2291 uint16_t temp; 2292 struct scsi_qla_host *vha = cmd->vha; 2293 2294 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2295 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2296 "sense_key=%02x, asc=%02x, ascq=%02x", 2297 vha, atio, scsi_status, sense_key, asc, ascq); 2298 2299 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2300 if (!ctio) { 2301 ql_dbg(ql_dbg_async, vha, 0x3067, 2302 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2303 vha->host_no, __func__); 2304 goto out; 2305 } 2306 2307 ctio->entry_type = CTIO_TYPE7; 2308 ctio->entry_count = 1; 2309 ctio->handle = QLA_TGT_SKIP_HANDLE; 2310 ctio->nport_handle = cmd->sess->loop_id; 2311 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2312 ctio->vp_index = vha->vp_idx; 2313 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2314 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2315 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2316 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2317 temp = (atio->u.isp24.attr << 9) | 2318 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2319 ctio->u.status1.flags = cpu_to_le16(temp); 2320 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2321 ctio->u.status1.ox_id = cpu_to_le16(temp); 2322 ctio->u.status1.scsi_status = 2323 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2324 ctio->u.status1.response_len = cpu_to_le16(18); 2325 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2326 2327 if (ctio->u.status1.residual != 0) 2328 ctio->u.status1.scsi_status |= 2329 cpu_to_le16(SS_RESIDUAL_UNDER); 2330 2331 /* Response code and sense key */ 2332 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)), 2333 (&ctio->u.status1.sense_data)[0]); 2334 /* Additional sense length */ 2335 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]); 2336 /* ASC and ASCQ */ 2337 put_unaligned_le32(((asc << 24) | (ascq << 16)), 2338 (&ctio->u.status1.sense_data)[3]); 2339 2340 /* Memory Barrier */ 2341 wmb(); 2342 2343 if (qpair->reqq_start_iocbs) 2344 qpair->reqq_start_iocbs(qpair); 2345 else 2346 qla2x00_start_iocbs(vha, qpair->req); 2347 2348 out: 2349 return; 2350 } 2351 2352 /* callback from target fabric module code */ 2353 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2354 { 2355 struct scsi_qla_host *vha = mcmd->sess->vha; 2356 struct qla_hw_data *ha = vha->hw; 2357 unsigned long flags; 2358 struct qla_qpair *qpair = mcmd->qpair; 2359 bool free_mcmd = true; 2360 2361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2362 "TM response mcmd (%p) status %#x state %#x", 2363 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2364 2365 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2366 2367 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2368 /* 2369 * Either the port is not online or this request was from 2370 * previous life, just abort the processing. 2371 */ 2372 ql_dbg(ql_dbg_async, vha, 0xe100, 2373 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2374 vha->flags.online, qla2x00_reset_active(vha), 2375 mcmd->reset_count, qpair->chip_reset); 2376 ha->tgt.tgt_ops->free_mcmd(mcmd); 2377 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2378 return; 2379 } 2380 2381 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2382 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2383 case ELS_LOGO: 2384 case ELS_PRLO: 2385 case ELS_TPRLO: 2386 ql_dbg(ql_dbg_disc, vha, 0x2106, 2387 "TM response logo %phC status %#x state %#x", 2388 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2389 mcmd->flags); 2390 qlt_schedule_sess_for_deletion(mcmd->sess); 2391 break; 2392 default: 2393 qlt_send_notify_ack(vha->hw->base_qpair, 2394 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2395 break; 2396 } 2397 } else { 2398 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2399 qlt_build_abts_resp_iocb(mcmd); 2400 free_mcmd = false; 2401 } else 2402 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2403 mcmd->fc_tm_rsp); 2404 } 2405 /* 2406 * Make the callback for ->free_mcmd() to queue_work() and invoke 2407 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2408 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2409 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2410 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2411 * qlt_xmit_tm_rsp() returns here.. 2412 */ 2413 if (free_mcmd) 2414 ha->tgt.tgt_ops->free_mcmd(mcmd); 2415 2416 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2417 } 2418 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2419 2420 /* No locks */ 2421 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2422 { 2423 struct qla_tgt_cmd *cmd = prm->cmd; 2424 2425 BUG_ON(cmd->sg_cnt == 0); 2426 2427 prm->sg = (struct scatterlist *)cmd->sg; 2428 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2429 cmd->sg_cnt, cmd->dma_data_direction); 2430 if (unlikely(prm->seg_cnt == 0)) 2431 goto out_err; 2432 2433 prm->cmd->sg_mapped = 1; 2434 2435 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2436 /* 2437 * If greater than four sg entries then we need to allocate 2438 * the continuation entries 2439 */ 2440 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2441 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2442 QLA_TGT_DATASEGS_PER_CMD_24XX, 2443 QLA_TGT_DATASEGS_PER_CONT_24XX); 2444 } else { 2445 /* DIF */ 2446 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2447 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2448 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2449 prm->tot_dsds = prm->seg_cnt; 2450 } else 2451 prm->tot_dsds = prm->seg_cnt; 2452 2453 if (cmd->prot_sg_cnt) { 2454 prm->prot_sg = cmd->prot_sg; 2455 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2456 cmd->prot_sg, cmd->prot_sg_cnt, 2457 cmd->dma_data_direction); 2458 if (unlikely(prm->prot_seg_cnt == 0)) 2459 goto out_err; 2460 2461 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2462 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2463 /* Dif Bundling not support here */ 2464 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2465 cmd->blk_sz); 2466 prm->tot_dsds += prm->prot_seg_cnt; 2467 } else 2468 prm->tot_dsds += prm->prot_seg_cnt; 2469 } 2470 } 2471 2472 return 0; 2473 2474 out_err: 2475 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2476 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2477 0, prm->cmd->sg_cnt); 2478 return -1; 2479 } 2480 2481 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2482 { 2483 struct qla_hw_data *ha; 2484 struct qla_qpair *qpair; 2485 if (!cmd->sg_mapped) 2486 return; 2487 2488 qpair = cmd->qpair; 2489 2490 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2491 cmd->dma_data_direction); 2492 cmd->sg_mapped = 0; 2493 2494 if (cmd->prot_sg_cnt) 2495 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2496 cmd->dma_data_direction); 2497 2498 if (!cmd->ctx) 2499 return; 2500 ha = vha->hw; 2501 if (cmd->ctx_dsd_alloced) 2502 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2503 2504 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2505 } 2506 2507 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2508 uint32_t req_cnt) 2509 { 2510 uint32_t cnt; 2511 struct req_que *req = qpair->req; 2512 2513 if (req->cnt < (req_cnt + 2)) { 2514 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2515 RD_REG_DWORD_RELAXED(req->req_q_out)); 2516 2517 if (req->ring_index < cnt) 2518 req->cnt = cnt - req->ring_index; 2519 else 2520 req->cnt = req->length - (req->ring_index - cnt); 2521 2522 if (unlikely(req->cnt < (req_cnt + 2))) 2523 return -EAGAIN; 2524 } 2525 2526 req->cnt -= req_cnt; 2527 2528 return 0; 2529 } 2530 2531 /* 2532 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2533 */ 2534 static inline void *qlt_get_req_pkt(struct req_que *req) 2535 { 2536 /* Adjust ring index. */ 2537 req->ring_index++; 2538 if (req->ring_index == req->length) { 2539 req->ring_index = 0; 2540 req->ring_ptr = req->ring; 2541 } else { 2542 req->ring_ptr++; 2543 } 2544 return (cont_entry_t *)req->ring_ptr; 2545 } 2546 2547 /* ha->hardware_lock supposed to be held on entry */ 2548 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2549 { 2550 uint32_t h; 2551 int index; 2552 uint8_t found = 0; 2553 struct req_que *req = qpair->req; 2554 2555 h = req->current_outstanding_cmd; 2556 2557 for (index = 1; index < req->num_outstanding_cmds; index++) { 2558 h++; 2559 if (h == req->num_outstanding_cmds) 2560 h = 1; 2561 2562 if (h == QLA_TGT_SKIP_HANDLE) 2563 continue; 2564 2565 if (!req->outstanding_cmds[h]) { 2566 found = 1; 2567 break; 2568 } 2569 } 2570 2571 if (found) { 2572 req->current_outstanding_cmd = h; 2573 } else { 2574 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2575 "qla_target(%d): Ran out of empty cmd slots\n", 2576 qpair->vha->vp_idx); 2577 h = QLA_TGT_NULL_HANDLE; 2578 } 2579 2580 return h; 2581 } 2582 2583 /* ha->hardware_lock supposed to be held on entry */ 2584 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2585 struct qla_tgt_prm *prm) 2586 { 2587 uint32_t h; 2588 struct ctio7_to_24xx *pkt; 2589 struct atio_from_isp *atio = &prm->cmd->atio; 2590 uint16_t temp; 2591 2592 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2593 prm->pkt = pkt; 2594 memset(pkt, 0, sizeof(*pkt)); 2595 2596 pkt->entry_type = CTIO_TYPE7; 2597 pkt->entry_count = (uint8_t)prm->req_cnt; 2598 pkt->vp_index = prm->cmd->vp_idx; 2599 2600 h = qlt_make_handle(qpair); 2601 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2602 /* 2603 * CTIO type 7 from the firmware doesn't provide a way to 2604 * know the initiator's LOOP ID, hence we can't find 2605 * the session and, so, the command. 2606 */ 2607 return -EAGAIN; 2608 } else 2609 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2610 2611 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2612 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2613 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2614 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2615 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2616 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2617 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2618 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2619 temp = atio->u.isp24.attr << 9; 2620 pkt->u.status0.flags |= cpu_to_le16(temp); 2621 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2622 pkt->u.status0.ox_id = cpu_to_le16(temp); 2623 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2624 2625 return 0; 2626 } 2627 2628 /* 2629 * ha->hardware_lock supposed to be held on entry. We have already made sure 2630 * that there is sufficient amount of request entries to not drop it. 2631 */ 2632 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2633 { 2634 int cnt; 2635 uint32_t *dword_ptr; 2636 2637 /* Build continuation packets */ 2638 while (prm->seg_cnt > 0) { 2639 cont_a64_entry_t *cont_pkt64 = 2640 (cont_a64_entry_t *)qlt_get_req_pkt( 2641 prm->cmd->qpair->req); 2642 2643 /* 2644 * Make sure that from cont_pkt64 none of 2645 * 64-bit specific fields used for 32-bit 2646 * addressing. Cast to (cont_entry_t *) for 2647 * that. 2648 */ 2649 2650 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2651 2652 cont_pkt64->entry_count = 1; 2653 cont_pkt64->sys_define = 0; 2654 2655 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2656 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address; 2657 2658 /* Load continuation entry data segments */ 2659 for (cnt = 0; 2660 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2661 cnt++, prm->seg_cnt--) { 2662 *dword_ptr++ = 2663 cpu_to_le32(lower_32_bits 2664 (sg_dma_address(prm->sg))); 2665 *dword_ptr++ = cpu_to_le32(upper_32_bits 2666 (sg_dma_address(prm->sg))); 2667 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2668 2669 prm->sg = sg_next(prm->sg); 2670 } 2671 } 2672 } 2673 2674 /* 2675 * ha->hardware_lock supposed to be held on entry. We have already made sure 2676 * that there is sufficient amount of request entries to not drop it. 2677 */ 2678 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2679 { 2680 int cnt; 2681 uint32_t *dword_ptr; 2682 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2683 2684 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2685 2686 /* Setup packet address segment pointer */ 2687 dword_ptr = pkt24->u.status0.dseg_0_address; 2688 2689 /* Set total data segment count */ 2690 if (prm->seg_cnt) 2691 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2692 2693 if (prm->seg_cnt == 0) { 2694 /* No data transfer */ 2695 *dword_ptr++ = 0; 2696 *dword_ptr = 0; 2697 return; 2698 } 2699 2700 /* If scatter gather */ 2701 2702 /* Load command entry data segments */ 2703 for (cnt = 0; 2704 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2705 cnt++, prm->seg_cnt--) { 2706 *dword_ptr++ = 2707 cpu_to_le32(lower_32_bits(sg_dma_address(prm->sg))); 2708 2709 *dword_ptr++ = cpu_to_le32(upper_32_bits( 2710 sg_dma_address(prm->sg))); 2711 2712 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2713 2714 prm->sg = sg_next(prm->sg); 2715 } 2716 2717 qlt_load_cont_data_segments(prm); 2718 } 2719 2720 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2721 { 2722 return cmd->bufflen > 0; 2723 } 2724 2725 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2726 { 2727 struct qla_tgt_cmd *cmd; 2728 struct scsi_qla_host *vha; 2729 2730 /* asc 0x10=dif error */ 2731 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2732 cmd = prm->cmd; 2733 vha = cmd->vha; 2734 /* ASCQ */ 2735 switch (prm->sense_buffer[13]) { 2736 case 1: 2737 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2738 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2739 "se_cmd=%p tag[%x]", 2740 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2741 cmd->atio.u.isp24.exchange_addr); 2742 break; 2743 case 2: 2744 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2745 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2746 "se_cmd=%p tag[%x]", 2747 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2748 cmd->atio.u.isp24.exchange_addr); 2749 break; 2750 case 3: 2751 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2752 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2753 "se_cmd=%p tag[%x]", 2754 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2755 cmd->atio.u.isp24.exchange_addr); 2756 break; 2757 default: 2758 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2759 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2760 "se_cmd=%p tag[%x]", 2761 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2762 cmd->atio.u.isp24.exchange_addr); 2763 break; 2764 } 2765 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2766 } 2767 } 2768 2769 /* 2770 * Called without ha->hardware_lock held 2771 */ 2772 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2773 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2774 uint32_t *full_req_cnt) 2775 { 2776 struct se_cmd *se_cmd = &cmd->se_cmd; 2777 struct qla_qpair *qpair = cmd->qpair; 2778 2779 prm->cmd = cmd; 2780 prm->tgt = cmd->tgt; 2781 prm->pkt = NULL; 2782 prm->rq_result = scsi_status; 2783 prm->sense_buffer = &cmd->sense_buffer[0]; 2784 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2785 prm->sg = NULL; 2786 prm->seg_cnt = -1; 2787 prm->req_cnt = 1; 2788 prm->residual = 0; 2789 prm->add_status_pkt = 0; 2790 prm->prot_sg = NULL; 2791 prm->prot_seg_cnt = 0; 2792 prm->tot_dsds = 0; 2793 2794 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2795 if (qlt_pci_map_calc_cnt(prm) != 0) 2796 return -EAGAIN; 2797 } 2798 2799 *full_req_cnt = prm->req_cnt; 2800 2801 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2802 prm->residual = se_cmd->residual_count; 2803 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2804 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2805 prm->residual, se_cmd->tag, 2806 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2807 cmd->bufflen, prm->rq_result); 2808 prm->rq_result |= SS_RESIDUAL_UNDER; 2809 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2810 prm->residual = se_cmd->residual_count; 2811 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2812 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2813 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2814 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2815 prm->rq_result |= SS_RESIDUAL_OVER; 2816 } 2817 2818 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2819 /* 2820 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2821 * ignored in *xmit_response() below 2822 */ 2823 if (qlt_has_data(cmd)) { 2824 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2825 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2826 (prm->rq_result != 0))) { 2827 prm->add_status_pkt = 1; 2828 (*full_req_cnt)++; 2829 } 2830 } 2831 } 2832 2833 return 0; 2834 } 2835 2836 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2837 int sending_sense) 2838 { 2839 if (cmd->qpair->enable_class_2) 2840 return 0; 2841 2842 if (sending_sense) 2843 return cmd->conf_compl_supported; 2844 else 2845 return cmd->qpair->enable_explicit_conf && 2846 cmd->conf_compl_supported; 2847 } 2848 2849 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2850 struct qla_tgt_prm *prm) 2851 { 2852 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2853 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2854 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2855 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2856 ctio->u.status0.flags |= cpu_to_le16( 2857 CTIO7_FLAGS_EXPLICIT_CONFORM | 2858 CTIO7_FLAGS_CONFORM_REQ); 2859 } 2860 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2861 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2862 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2863 int i; 2864 2865 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2866 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2867 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2868 "Skipping EXPLICIT_CONFORM and " 2869 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2870 "non GOOD status\n"); 2871 goto skip_explict_conf; 2872 } 2873 ctio->u.status1.flags |= cpu_to_le16( 2874 CTIO7_FLAGS_EXPLICIT_CONFORM | 2875 CTIO7_FLAGS_CONFORM_REQ); 2876 } 2877 skip_explict_conf: 2878 ctio->u.status1.flags &= 2879 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2880 ctio->u.status1.flags |= 2881 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2882 ctio->u.status1.scsi_status |= 2883 cpu_to_le16(SS_SENSE_LEN_VALID); 2884 ctio->u.status1.sense_length = 2885 cpu_to_le16(prm->sense_buffer_len); 2886 for (i = 0; i < prm->sense_buffer_len/4; i++) 2887 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2888 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2889 2890 qlt_print_dif_err(prm); 2891 2892 } else { 2893 ctio->u.status1.flags &= 2894 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2895 ctio->u.status1.flags |= 2896 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2897 ctio->u.status1.sense_length = 0; 2898 memset(ctio->u.status1.sense_data, 0, 2899 sizeof(ctio->u.status1.sense_data)); 2900 } 2901 2902 /* Sense with len > 24, is it possible ??? */ 2903 } 2904 2905 static inline int 2906 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2907 { 2908 switch (se_cmd->prot_op) { 2909 case TARGET_PROT_DOUT_INSERT: 2910 case TARGET_PROT_DIN_STRIP: 2911 if (ql2xenablehba_err_chk >= 1) 2912 return 1; 2913 break; 2914 case TARGET_PROT_DOUT_PASS: 2915 case TARGET_PROT_DIN_PASS: 2916 if (ql2xenablehba_err_chk >= 2) 2917 return 1; 2918 break; 2919 case TARGET_PROT_DIN_INSERT: 2920 case TARGET_PROT_DOUT_STRIP: 2921 return 1; 2922 default: 2923 break; 2924 } 2925 return 0; 2926 } 2927 2928 static inline int 2929 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2930 { 2931 switch (se_cmd->prot_op) { 2932 case TARGET_PROT_DIN_INSERT: 2933 case TARGET_PROT_DOUT_INSERT: 2934 case TARGET_PROT_DIN_STRIP: 2935 case TARGET_PROT_DOUT_STRIP: 2936 case TARGET_PROT_DIN_PASS: 2937 case TARGET_PROT_DOUT_PASS: 2938 return 1; 2939 default: 2940 return 0; 2941 } 2942 return 0; 2943 } 2944 2945 /* 2946 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2947 */ 2948 static void 2949 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2950 uint16_t *pfw_prot_opts) 2951 { 2952 struct se_cmd *se_cmd = &cmd->se_cmd; 2953 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2954 scsi_qla_host_t *vha = cmd->tgt->vha; 2955 struct qla_hw_data *ha = vha->hw; 2956 uint32_t t32 = 0; 2957 2958 /* 2959 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2960 * have been immplemented by TCM, before AppTag is avail. 2961 * Look for modesense_handlers[] 2962 */ 2963 ctx->app_tag = 0; 2964 ctx->app_tag_mask[0] = 0x0; 2965 ctx->app_tag_mask[1] = 0x0; 2966 2967 if (IS_PI_UNINIT_CAPABLE(ha)) { 2968 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2969 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2970 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2971 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2972 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2973 } 2974 2975 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2976 2977 switch (se_cmd->prot_type) { 2978 case TARGET_DIF_TYPE0_PROT: 2979 /* 2980 * No check for ql2xenablehba_err_chk, as it 2981 * would be an I/O error if hba tag generation 2982 * is not done. 2983 */ 2984 ctx->ref_tag = cpu_to_le32(lba); 2985 /* enable ALL bytes of the ref tag */ 2986 ctx->ref_tag_mask[0] = 0xff; 2987 ctx->ref_tag_mask[1] = 0xff; 2988 ctx->ref_tag_mask[2] = 0xff; 2989 ctx->ref_tag_mask[3] = 0xff; 2990 break; 2991 case TARGET_DIF_TYPE1_PROT: 2992 /* 2993 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2994 * REF tag, and 16 bit app tag. 2995 */ 2996 ctx->ref_tag = cpu_to_le32(lba); 2997 if (!qla_tgt_ref_mask_check(se_cmd) || 2998 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2999 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3000 break; 3001 } 3002 /* enable ALL bytes of the ref tag */ 3003 ctx->ref_tag_mask[0] = 0xff; 3004 ctx->ref_tag_mask[1] = 0xff; 3005 ctx->ref_tag_mask[2] = 0xff; 3006 ctx->ref_tag_mask[3] = 0xff; 3007 break; 3008 case TARGET_DIF_TYPE2_PROT: 3009 /* 3010 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 3011 * tag has to match LBA in CDB + N 3012 */ 3013 ctx->ref_tag = cpu_to_le32(lba); 3014 if (!qla_tgt_ref_mask_check(se_cmd) || 3015 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 3016 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3017 break; 3018 } 3019 /* enable ALL bytes of the ref tag */ 3020 ctx->ref_tag_mask[0] = 0xff; 3021 ctx->ref_tag_mask[1] = 0xff; 3022 ctx->ref_tag_mask[2] = 0xff; 3023 ctx->ref_tag_mask[3] = 0xff; 3024 break; 3025 case TARGET_DIF_TYPE3_PROT: 3026 /* For TYPE 3 protection: 16 bit GUARD only */ 3027 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 3028 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 3029 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 3030 break; 3031 } 3032 } 3033 3034 static inline int 3035 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 3036 { 3037 uint32_t *cur_dsd; 3038 uint32_t transfer_length = 0; 3039 uint32_t data_bytes; 3040 uint32_t dif_bytes; 3041 uint8_t bundling = 1; 3042 struct crc_context *crc_ctx_pkt = NULL; 3043 struct qla_hw_data *ha; 3044 struct ctio_crc2_to_fw *pkt; 3045 dma_addr_t crc_ctx_dma; 3046 uint16_t fw_prot_opts = 0; 3047 struct qla_tgt_cmd *cmd = prm->cmd; 3048 struct se_cmd *se_cmd = &cmd->se_cmd; 3049 uint32_t h; 3050 struct atio_from_isp *atio = &prm->cmd->atio; 3051 struct qla_tc_param tc; 3052 uint16_t t16; 3053 scsi_qla_host_t *vha = cmd->vha; 3054 3055 ha = vha->hw; 3056 3057 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3058 prm->pkt = pkt; 3059 memset(pkt, 0, sizeof(*pkt)); 3060 3061 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3062 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3063 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3064 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3065 3066 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3067 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3068 bundling = 0; 3069 3070 /* Compute dif len and adjust data len to incude protection */ 3071 data_bytes = cmd->bufflen; 3072 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3073 3074 switch (se_cmd->prot_op) { 3075 case TARGET_PROT_DIN_INSERT: 3076 case TARGET_PROT_DOUT_STRIP: 3077 transfer_length = data_bytes; 3078 if (cmd->prot_sg_cnt) 3079 data_bytes += dif_bytes; 3080 break; 3081 case TARGET_PROT_DIN_STRIP: 3082 case TARGET_PROT_DOUT_INSERT: 3083 case TARGET_PROT_DIN_PASS: 3084 case TARGET_PROT_DOUT_PASS: 3085 transfer_length = data_bytes + dif_bytes; 3086 break; 3087 default: 3088 BUG(); 3089 break; 3090 } 3091 3092 if (!qlt_hba_err_chk_enabled(se_cmd)) 3093 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3094 /* HBA error checking enabled */ 3095 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3096 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3097 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3098 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3099 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3100 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3101 } 3102 3103 switch (se_cmd->prot_op) { 3104 case TARGET_PROT_DIN_INSERT: 3105 case TARGET_PROT_DOUT_INSERT: 3106 fw_prot_opts |= PO_MODE_DIF_INSERT; 3107 break; 3108 case TARGET_PROT_DIN_STRIP: 3109 case TARGET_PROT_DOUT_STRIP: 3110 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3111 break; 3112 case TARGET_PROT_DIN_PASS: 3113 case TARGET_PROT_DOUT_PASS: 3114 fw_prot_opts |= PO_MODE_DIF_PASS; 3115 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3116 break; 3117 default:/* Normal Request */ 3118 fw_prot_opts |= PO_MODE_DIF_PASS; 3119 break; 3120 } 3121 3122 /* ---- PKT ---- */ 3123 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3124 pkt->entry_type = CTIO_CRC2; 3125 pkt->entry_count = 1; 3126 pkt->vp_index = cmd->vp_idx; 3127 3128 h = qlt_make_handle(qpair); 3129 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3130 /* 3131 * CTIO type 7 from the firmware doesn't provide a way to 3132 * know the initiator's LOOP ID, hence we can't find 3133 * the session and, so, the command. 3134 */ 3135 return -EAGAIN; 3136 } else 3137 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3138 3139 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 3140 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3141 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3142 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3143 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3144 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3145 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3146 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3147 3148 /* silence compile warning */ 3149 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3150 pkt->ox_id = cpu_to_le16(t16); 3151 3152 t16 = (atio->u.isp24.attr << 9); 3153 pkt->flags |= cpu_to_le16(t16); 3154 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3155 3156 /* Set transfer direction */ 3157 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3158 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3159 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3160 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3161 3162 pkt->dseg_count = prm->tot_dsds; 3163 /* Fibre channel byte count */ 3164 pkt->transfer_length = cpu_to_le32(transfer_length); 3165 3166 /* ----- CRC context -------- */ 3167 3168 /* Allocate CRC context from global pool */ 3169 crc_ctx_pkt = cmd->ctx = 3170 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3171 3172 if (!crc_ctx_pkt) 3173 goto crc_queuing_error; 3174 3175 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3176 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3177 3178 /* Set handle */ 3179 crc_ctx_pkt->handle = pkt->handle; 3180 3181 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3182 3183 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 3184 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 3185 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 3186 3187 if (!bundling) { 3188 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 3189 } else { 3190 /* 3191 * Configure Bundling if we need to fetch interlaving 3192 * protection PCI accesses 3193 */ 3194 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3195 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3196 crc_ctx_pkt->u.bundling.dseg_count = 3197 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3198 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 3199 } 3200 3201 /* Finish the common fields of CRC pkt */ 3202 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3203 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3204 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3205 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3206 3207 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3208 tc.vha = vha; 3209 tc.blk_sz = cmd->blk_sz; 3210 tc.bufflen = cmd->bufflen; 3211 tc.sg = cmd->sg; 3212 tc.prot_sg = cmd->prot_sg; 3213 tc.ctx = crc_ctx_pkt; 3214 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3215 3216 /* Walks data segments */ 3217 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3218 3219 if (!bundling && prm->prot_seg_cnt) { 3220 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3221 prm->tot_dsds, &tc)) 3222 goto crc_queuing_error; 3223 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3224 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3225 goto crc_queuing_error; 3226 3227 if (bundling && prm->prot_seg_cnt) { 3228 /* Walks dif segments */ 3229 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3230 3231 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 3232 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3233 prm->prot_seg_cnt, &tc)) 3234 goto crc_queuing_error; 3235 } 3236 return QLA_SUCCESS; 3237 3238 crc_queuing_error: 3239 /* Cleanup will be performed by the caller */ 3240 qpair->req->outstanding_cmds[h] = NULL; 3241 3242 return QLA_FUNCTION_FAILED; 3243 } 3244 3245 /* 3246 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3247 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3248 */ 3249 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3250 uint8_t scsi_status) 3251 { 3252 struct scsi_qla_host *vha = cmd->vha; 3253 struct qla_qpair *qpair = cmd->qpair; 3254 struct ctio7_to_24xx *pkt; 3255 struct qla_tgt_prm prm; 3256 uint32_t full_req_cnt = 0; 3257 unsigned long flags = 0; 3258 int res; 3259 3260 if (cmd->sess && cmd->sess->deleted) { 3261 cmd->state = QLA_TGT_STATE_PROCESSED; 3262 if (cmd->sess->logout_completed) 3263 /* no need to terminate. FW already freed exchange. */ 3264 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3265 else 3266 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0); 3267 return 0; 3268 } 3269 3270 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3271 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3272 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3273 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3274 &cmd->se_cmd, qpair->id); 3275 3276 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3277 &full_req_cnt); 3278 if (unlikely(res != 0)) { 3279 return res; 3280 } 3281 3282 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3283 3284 if (xmit_type == QLA_TGT_XMIT_STATUS) 3285 qpair->tgt_counters.core_qla_snd_status++; 3286 else 3287 qpair->tgt_counters.core_qla_que_buf++; 3288 3289 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3290 /* 3291 * Either the port is not online or this request was from 3292 * previous life, just abort the processing. 3293 */ 3294 cmd->state = QLA_TGT_STATE_PROCESSED; 3295 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3296 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3297 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3298 vha->flags.online, qla2x00_reset_active(vha), 3299 cmd->reset_count, qpair->chip_reset); 3300 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3301 return 0; 3302 } 3303 3304 /* Does F/W have an IOCBs for this request */ 3305 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3306 if (unlikely(res)) 3307 goto out_unmap_unlock; 3308 3309 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3310 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3311 else 3312 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3313 if (unlikely(res != 0)) { 3314 qpair->req->cnt += full_req_cnt; 3315 goto out_unmap_unlock; 3316 } 3317 3318 pkt = (struct ctio7_to_24xx *)prm.pkt; 3319 3320 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3321 pkt->u.status0.flags |= 3322 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3323 CTIO7_FLAGS_STATUS_MODE_0); 3324 3325 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3326 qlt_load_data_segments(&prm); 3327 3328 if (prm.add_status_pkt == 0) { 3329 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3330 pkt->u.status0.scsi_status = 3331 cpu_to_le16(prm.rq_result); 3332 pkt->u.status0.residual = 3333 cpu_to_le32(prm.residual); 3334 pkt->u.status0.flags |= cpu_to_le16( 3335 CTIO7_FLAGS_SEND_STATUS); 3336 if (qlt_need_explicit_conf(cmd, 0)) { 3337 pkt->u.status0.flags |= 3338 cpu_to_le16( 3339 CTIO7_FLAGS_EXPLICIT_CONFORM | 3340 CTIO7_FLAGS_CONFORM_REQ); 3341 } 3342 } 3343 3344 } else { 3345 /* 3346 * We have already made sure that there is sufficient 3347 * amount of request entries to not drop HW lock in 3348 * req_pkt(). 3349 */ 3350 struct ctio7_to_24xx *ctio = 3351 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3352 qpair->req); 3353 3354 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3355 "Building additional status packet 0x%p.\n", 3356 ctio); 3357 3358 /* 3359 * T10Dif: ctio_crc2_to_fw overlay ontop of 3360 * ctio7_to_24xx 3361 */ 3362 memcpy(ctio, pkt, sizeof(*ctio)); 3363 /* reset back to CTIO7 */ 3364 ctio->entry_count = 1; 3365 ctio->entry_type = CTIO_TYPE7; 3366 ctio->dseg_count = 0; 3367 ctio->u.status1.flags &= ~cpu_to_le16( 3368 CTIO7_FLAGS_DATA_IN); 3369 3370 /* Real finish is ctio_m1's finish */ 3371 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3372 pkt->u.status0.flags |= cpu_to_le16( 3373 CTIO7_FLAGS_DONT_RET_CTIO); 3374 3375 /* qlt_24xx_init_ctio_to_isp will correct 3376 * all neccessary fields that's part of CTIO7. 3377 * There should be no residual of CTIO-CRC2 data. 3378 */ 3379 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3380 &prm); 3381 } 3382 } else 3383 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3384 3385 3386 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3387 spin_lock(&cmd->cmd_lock); 3388 cmd->cmd_sent_to_fw = 1; 3389 spin_unlock(&cmd->cmd_lock); 3390 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3391 3392 /* Memory Barrier */ 3393 wmb(); 3394 if (qpair->reqq_start_iocbs) 3395 qpair->reqq_start_iocbs(qpair); 3396 else 3397 qla2x00_start_iocbs(vha, qpair->req); 3398 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3399 3400 return 0; 3401 3402 out_unmap_unlock: 3403 qlt_unmap_sg(vha, cmd); 3404 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3405 3406 return res; 3407 } 3408 EXPORT_SYMBOL(qlt_xmit_response); 3409 3410 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3411 { 3412 struct ctio7_to_24xx *pkt; 3413 struct scsi_qla_host *vha = cmd->vha; 3414 struct qla_tgt *tgt = cmd->tgt; 3415 struct qla_tgt_prm prm; 3416 unsigned long flags = 0; 3417 int res = 0; 3418 struct qla_qpair *qpair = cmd->qpair; 3419 3420 memset(&prm, 0, sizeof(prm)); 3421 prm.cmd = cmd; 3422 prm.tgt = tgt; 3423 prm.sg = NULL; 3424 prm.req_cnt = 1; 3425 3426 /* Calculate number of entries and segments required */ 3427 if (qlt_pci_map_calc_cnt(&prm) != 0) 3428 return -EAGAIN; 3429 3430 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3431 (cmd->sess && cmd->sess->deleted)) { 3432 /* 3433 * Either the port is not online or this request was from 3434 * previous life, just abort the processing. 3435 */ 3436 cmd->state = QLA_TGT_STATE_NEED_DATA; 3437 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3438 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3439 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3440 vha->flags.online, qla2x00_reset_active(vha), 3441 cmd->reset_count, qpair->chip_reset); 3442 return 0; 3443 } 3444 3445 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3446 /* Does F/W have an IOCBs for this request */ 3447 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3448 if (res != 0) 3449 goto out_unlock_free_unmap; 3450 if (cmd->se_cmd.prot_op) 3451 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3452 else 3453 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3454 3455 if (unlikely(res != 0)) { 3456 qpair->req->cnt += prm.req_cnt; 3457 goto out_unlock_free_unmap; 3458 } 3459 3460 pkt = (struct ctio7_to_24xx *)prm.pkt; 3461 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3462 CTIO7_FLAGS_STATUS_MODE_0); 3463 3464 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3465 qlt_load_data_segments(&prm); 3466 3467 cmd->state = QLA_TGT_STATE_NEED_DATA; 3468 spin_lock(&cmd->cmd_lock); 3469 cmd->cmd_sent_to_fw = 1; 3470 spin_unlock(&cmd->cmd_lock); 3471 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3472 3473 /* Memory Barrier */ 3474 wmb(); 3475 if (qpair->reqq_start_iocbs) 3476 qpair->reqq_start_iocbs(qpair); 3477 else 3478 qla2x00_start_iocbs(vha, qpair->req); 3479 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3480 3481 return res; 3482 3483 out_unlock_free_unmap: 3484 qlt_unmap_sg(vha, cmd); 3485 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3486 3487 return res; 3488 } 3489 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3490 3491 3492 /* 3493 * it is assumed either hardware_lock or qpair lock is held. 3494 */ 3495 static void 3496 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3497 struct ctio_crc_from_fw *sts) 3498 { 3499 uint8_t *ap = &sts->actual_dif[0]; 3500 uint8_t *ep = &sts->expected_dif[0]; 3501 uint64_t lba = cmd->se_cmd.t_task_lba; 3502 uint8_t scsi_status, sense_key, asc, ascq; 3503 unsigned long flags; 3504 struct scsi_qla_host *vha = cmd->vha; 3505 3506 cmd->trc_flags |= TRC_DIF_ERR; 3507 3508 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3509 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3510 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3511 3512 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3513 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3514 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3515 3516 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3517 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3518 3519 scsi_status = sense_key = asc = ascq = 0; 3520 3521 /* check appl tag */ 3522 if (cmd->e_app_tag != cmd->a_app_tag) { 3523 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3524 "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]", 3525 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3526 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3527 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3528 cmd->atio.u.isp24.fcp_hdr.ox_id); 3529 3530 cmd->dif_err_code = DIF_ERR_APP; 3531 scsi_status = SAM_STAT_CHECK_CONDITION; 3532 sense_key = ABORTED_COMMAND; 3533 asc = 0x10; 3534 ascq = 0x2; 3535 } 3536 3537 /* check ref tag */ 3538 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3539 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3540 "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] ", 3541 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3542 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3543 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3544 cmd->atio.u.isp24.fcp_hdr.ox_id); 3545 3546 cmd->dif_err_code = DIF_ERR_REF; 3547 scsi_status = SAM_STAT_CHECK_CONDITION; 3548 sense_key = ABORTED_COMMAND; 3549 asc = 0x10; 3550 ascq = 0x3; 3551 goto out; 3552 } 3553 3554 /* check guard */ 3555 if (cmd->e_guard != cmd->a_guard) { 3556 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3557 "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]", 3558 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3559 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3560 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3561 cmd->atio.u.isp24.fcp_hdr.ox_id); 3562 3563 cmd->dif_err_code = DIF_ERR_GRD; 3564 scsi_status = SAM_STAT_CHECK_CONDITION; 3565 sense_key = ABORTED_COMMAND; 3566 asc = 0x10; 3567 ascq = 0x1; 3568 } 3569 out: 3570 switch (cmd->state) { 3571 case QLA_TGT_STATE_NEED_DATA: 3572 /* handle_data will load DIF error code */ 3573 cmd->state = QLA_TGT_STATE_DATA_IN; 3574 vha->hw->tgt.tgt_ops->handle_data(cmd); 3575 break; 3576 default: 3577 spin_lock_irqsave(&cmd->cmd_lock, flags); 3578 if (cmd->aborted) { 3579 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3580 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3581 break; 3582 } 3583 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3584 3585 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3586 ascq); 3587 /* assume scsi status gets out on the wire. 3588 * Will not wait for completion. 3589 */ 3590 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3591 break; 3592 } 3593 } 3594 3595 /* If hardware_lock held on entry, might drop it, then reaquire */ 3596 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3597 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3598 struct imm_ntfy_from_isp *ntfy) 3599 { 3600 struct nack_to_isp *nack; 3601 struct qla_hw_data *ha = vha->hw; 3602 request_t *pkt; 3603 int ret = 0; 3604 3605 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3606 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3607 3608 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3609 if (pkt == NULL) { 3610 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3611 "qla_target(%d): %s failed: unable to allocate " 3612 "request packet\n", vha->vp_idx, __func__); 3613 return -ENOMEM; 3614 } 3615 3616 pkt->entry_type = NOTIFY_ACK_TYPE; 3617 pkt->entry_count = 1; 3618 pkt->handle = QLA_TGT_SKIP_HANDLE; 3619 3620 nack = (struct nack_to_isp *)pkt; 3621 nack->ox_id = ntfy->ox_id; 3622 3623 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3624 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3625 nack->u.isp24.flags = ntfy->u.isp24.flags & 3626 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3627 } 3628 3629 /* terminate */ 3630 nack->u.isp24.flags |= 3631 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3632 3633 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3634 nack->u.isp24.status = ntfy->u.isp24.status; 3635 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3636 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3637 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3638 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3639 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3640 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3641 3642 qla2x00_start_iocbs(vha, vha->req); 3643 return ret; 3644 } 3645 3646 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3647 struct imm_ntfy_from_isp *imm, int ha_locked) 3648 { 3649 unsigned long flags = 0; 3650 int rc; 3651 3652 if (ha_locked) { 3653 rc = __qlt_send_term_imm_notif(vha, imm); 3654 3655 #if 0 /* Todo */ 3656 if (rc == -ENOMEM) 3657 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3658 #else 3659 if (rc) { 3660 } 3661 #endif 3662 goto done; 3663 } 3664 3665 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3666 rc = __qlt_send_term_imm_notif(vha, imm); 3667 3668 #if 0 /* Todo */ 3669 if (rc == -ENOMEM) 3670 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3671 #endif 3672 3673 done: 3674 if (!ha_locked) 3675 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3676 } 3677 3678 /* 3679 * If hardware_lock held on entry, might drop it, then reaquire 3680 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3681 */ 3682 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3683 struct qla_tgt_cmd *cmd, 3684 struct atio_from_isp *atio) 3685 { 3686 struct scsi_qla_host *vha = qpair->vha; 3687 struct ctio7_to_24xx *ctio24; 3688 struct qla_hw_data *ha = vha->hw; 3689 request_t *pkt; 3690 int ret = 0; 3691 uint16_t temp; 3692 3693 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3694 3695 if (cmd) 3696 vha = cmd->vha; 3697 3698 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3699 if (pkt == NULL) { 3700 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3701 "qla_target(%d): %s failed: unable to allocate " 3702 "request packet\n", vha->vp_idx, __func__); 3703 return -ENOMEM; 3704 } 3705 3706 if (cmd != NULL) { 3707 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3708 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3709 "qla_target(%d): Terminating cmd %p with " 3710 "incorrect state %d\n", vha->vp_idx, cmd, 3711 cmd->state); 3712 } else 3713 ret = 1; 3714 } 3715 3716 qpair->tgt_counters.num_term_xchg_sent++; 3717 pkt->entry_count = 1; 3718 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3719 3720 ctio24 = (struct ctio7_to_24xx *)pkt; 3721 ctio24->entry_type = CTIO_TYPE7; 3722 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3723 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3724 ctio24->vp_index = vha->vp_idx; 3725 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3726 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3727 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3728 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3729 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3730 CTIO7_FLAGS_TERMINATE; 3731 ctio24->u.status1.flags = cpu_to_le16(temp); 3732 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3733 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3734 3735 /* Memory Barrier */ 3736 wmb(); 3737 if (qpair->reqq_start_iocbs) 3738 qpair->reqq_start_iocbs(qpair); 3739 else 3740 qla2x00_start_iocbs(vha, qpair->req); 3741 return ret; 3742 } 3743 3744 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3745 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3746 int ul_abort) 3747 { 3748 struct scsi_qla_host *vha; 3749 unsigned long flags = 0; 3750 int rc; 3751 3752 /* why use different vha? NPIV */ 3753 if (cmd) 3754 vha = cmd->vha; 3755 else 3756 vha = qpair->vha; 3757 3758 if (ha_locked) { 3759 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3760 if (rc == -ENOMEM) 3761 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3762 goto done; 3763 } 3764 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3765 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3766 if (rc == -ENOMEM) 3767 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3768 3769 done: 3770 if (cmd && !ul_abort && !cmd->aborted) { 3771 if (cmd->sg_mapped) 3772 qlt_unmap_sg(vha, cmd); 3773 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3774 } 3775 3776 if (!ha_locked) 3777 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3778 3779 return; 3780 } 3781 3782 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3783 { 3784 struct list_head free_list; 3785 struct qla_tgt_cmd *cmd, *tcmd; 3786 3787 vha->hw->tgt.leak_exchg_thresh_hold = 3788 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3789 3790 cmd = tcmd = NULL; 3791 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3792 INIT_LIST_HEAD(&free_list); 3793 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3794 3795 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3796 list_del(&cmd->cmd_list); 3797 /* This cmd was never sent to TCM. There is no need 3798 * to schedule free or call free_cmd 3799 */ 3800 qlt_free_cmd(cmd); 3801 vha->hw->tgt.num_qfull_cmds_alloc--; 3802 } 3803 } 3804 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3805 } 3806 3807 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3808 { 3809 uint32_t total_leaked; 3810 3811 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3812 3813 if (vha->hw->tgt.leak_exchg_thresh_hold && 3814 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3815 3816 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3817 "Chip reset due to exchange starvation: %d/%d.\n", 3818 total_leaked, vha->hw->cur_fw_xcb_count); 3819 3820 if (IS_P3P_TYPE(vha->hw)) 3821 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3822 else 3823 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3824 qla2xxx_wake_dpc(vha); 3825 } 3826 3827 } 3828 3829 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3830 { 3831 struct qla_tgt *tgt = cmd->tgt; 3832 struct scsi_qla_host *vha = tgt->vha; 3833 struct se_cmd *se_cmd = &cmd->se_cmd; 3834 unsigned long flags; 3835 3836 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3837 "qla_target(%d): terminating exchange for aborted cmd=%p " 3838 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3839 se_cmd->tag); 3840 3841 spin_lock_irqsave(&cmd->cmd_lock, flags); 3842 if (cmd->aborted) { 3843 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3844 /* 3845 * It's normal to see 2 calls in this path: 3846 * 1) XFER Rdy completion + CMD_T_ABORT 3847 * 2) TCM TMR - drain_state_list 3848 */ 3849 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3850 "multiple abort. %p transport_state %x, t_state %x, " 3851 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3852 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3853 return EIO; 3854 } 3855 cmd->aborted = 1; 3856 cmd->trc_flags |= TRC_ABORT; 3857 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3858 3859 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3860 return 0; 3861 } 3862 EXPORT_SYMBOL(qlt_abort_cmd); 3863 3864 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3865 { 3866 struct fc_port *sess = cmd->sess; 3867 3868 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3869 "%s: se_cmd[%p] ox_id %04x\n", 3870 __func__, &cmd->se_cmd, 3871 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3872 3873 BUG_ON(cmd->cmd_in_wq); 3874 3875 if (cmd->sg_mapped) 3876 qlt_unmap_sg(cmd->vha, cmd); 3877 3878 if (!cmd->q_full) 3879 qlt_decr_num_pend_cmds(cmd->vha); 3880 3881 BUG_ON(cmd->sg_mapped); 3882 cmd->jiffies_at_free = get_jiffies_64(); 3883 if (unlikely(cmd->free_sg)) 3884 kfree(cmd->sg); 3885 3886 if (!sess || !sess->se_sess) { 3887 WARN_ON(1); 3888 return; 3889 } 3890 cmd->jiffies_at_free = get_jiffies_64(); 3891 target_free_tag(sess->se_sess, &cmd->se_cmd); 3892 } 3893 EXPORT_SYMBOL(qlt_free_cmd); 3894 3895 /* 3896 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3897 */ 3898 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3899 struct qla_tgt_cmd *cmd, uint32_t status) 3900 { 3901 int term = 0; 3902 struct scsi_qla_host *vha = qpair->vha; 3903 3904 if (cmd->se_cmd.prot_op) 3905 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3906 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3907 "se_cmd=%p tag[%x] op %#x/%s", 3908 cmd->lba, cmd->lba, 3909 cmd->num_blks, &cmd->se_cmd, 3910 cmd->atio.u.isp24.exchange_addr, 3911 cmd->se_cmd.prot_op, 3912 prot_op_str(cmd->se_cmd.prot_op)); 3913 3914 if (ctio != NULL) { 3915 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3916 term = !(c->flags & 3917 cpu_to_le16(OF_TERM_EXCH)); 3918 } else 3919 term = 1; 3920 3921 if (term) 3922 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); 3923 3924 return term; 3925 } 3926 3927 3928 /* ha->hardware_lock supposed to be held on entry */ 3929 static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3930 struct rsp_que *rsp, uint32_t handle, void *ctio) 3931 { 3932 void *cmd = NULL; 3933 struct req_que *req; 3934 int qid = GET_QID(handle); 3935 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3936 3937 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3938 return NULL; 3939 3940 if (qid == rsp->req->id) { 3941 req = rsp->req; 3942 } else if (vha->hw->req_q_map[qid]) { 3943 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3944 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3945 vha->vp_idx, rsp->id, handle); 3946 req = vha->hw->req_q_map[qid]; 3947 } else { 3948 return NULL; 3949 } 3950 3951 h &= QLA_CMD_HANDLE_MASK; 3952 3953 if (h != QLA_TGT_NULL_HANDLE) { 3954 if (unlikely(h >= req->num_outstanding_cmds)) { 3955 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3956 "qla_target(%d): Wrong handle %x received\n", 3957 vha->vp_idx, handle); 3958 return NULL; 3959 } 3960 3961 cmd = (void *) req->outstanding_cmds[h]; 3962 if (unlikely(cmd == NULL)) { 3963 ql_dbg(ql_dbg_async, vha, 0xe053, 3964 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3965 vha->vp_idx, handle, req->id, rsp->id); 3966 return NULL; 3967 } 3968 req->outstanding_cmds[h] = NULL; 3969 } else if (ctio != NULL) { 3970 /* We can't get loop ID from CTIO7 */ 3971 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3972 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3973 "support NULL handles\n", vha->vp_idx); 3974 return NULL; 3975 } 3976 3977 return cmd; 3978 } 3979 3980 /* hardware_lock should be held by caller. */ 3981 void 3982 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3983 { 3984 struct qla_hw_data *ha = vha->hw; 3985 3986 if (cmd->sg_mapped) 3987 qlt_unmap_sg(vha, cmd); 3988 3989 /* TODO: fix debug message type and ids. */ 3990 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3991 ql_dbg(ql_dbg_io, vha, 0xff00, 3992 "HOST-ABORT: state=PROCESSED.\n"); 3993 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3994 cmd->write_data_transferred = 0; 3995 cmd->state = QLA_TGT_STATE_DATA_IN; 3996 3997 ql_dbg(ql_dbg_io, vha, 0xff01, 3998 "HOST-ABORT: state=DATA_IN.\n"); 3999 4000 ha->tgt.tgt_ops->handle_data(cmd); 4001 return; 4002 } else { 4003 ql_dbg(ql_dbg_io, vha, 0xff03, 4004 "HOST-ABORT: state=BAD(%d).\n", 4005 cmd->state); 4006 dump_stack(); 4007 } 4008 4009 cmd->trc_flags |= TRC_FLUSH; 4010 ha->tgt.tgt_ops->free_cmd(cmd); 4011 } 4012 4013 /* 4014 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4015 */ 4016 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 4017 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 4018 { 4019 struct qla_hw_data *ha = vha->hw; 4020 struct se_cmd *se_cmd; 4021 struct qla_tgt_cmd *cmd; 4022 struct qla_qpair *qpair = rsp->qpair; 4023 4024 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 4025 /* That could happen only in case of an error/reset/abort */ 4026 if (status != CTIO_SUCCESS) { 4027 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 4028 "Intermediate CTIO received" 4029 " (status %x)\n", status); 4030 } 4031 return; 4032 } 4033 4034 cmd = (struct qla_tgt_cmd *)qlt_ctio_to_cmd(vha, rsp, handle, ctio); 4035 if (cmd == NULL) 4036 return; 4037 4038 se_cmd = &cmd->se_cmd; 4039 cmd->cmd_sent_to_fw = 0; 4040 4041 qlt_unmap_sg(vha, cmd); 4042 4043 if (unlikely(status != CTIO_SUCCESS)) { 4044 switch (status & 0xFFFF) { 4045 case CTIO_INVALID_RX_ID: 4046 if (printk_ratelimit()) 4047 dev_info(&vha->hw->pdev->dev, 4048 "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", 4049 vha->vp_idx, cmd->atio.u.isp24.attr, 4050 ((cmd->ctio_flags >> 9) & 0xf), 4051 cmd->ctio_flags); 4052 4053 break; 4054 case CTIO_LIP_RESET: 4055 case CTIO_TARGET_RESET: 4056 case CTIO_ABORTED: 4057 /* driver request abort via Terminate exchange */ 4058 case CTIO_TIMEOUT: 4059 /* They are OK */ 4060 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4061 "qla_target(%d): CTIO with " 4062 "status %#x received, state %x, se_cmd %p, " 4063 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 4064 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 4065 status, cmd->state, se_cmd); 4066 break; 4067 4068 case CTIO_PORT_LOGGED_OUT: 4069 case CTIO_PORT_UNAVAILABLE: 4070 { 4071 int logged_out = 4072 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4073 4074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4075 "qla_target(%d): CTIO with %s status %x " 4076 "received (state %x, se_cmd %p)\n", vha->vp_idx, 4077 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4078 status, cmd->state, se_cmd); 4079 4080 if (logged_out && cmd->sess) { 4081 /* 4082 * Session is already logged out, but we need 4083 * to notify initiator, who's not aware of this 4084 */ 4085 cmd->sess->send_els_logo = 1; 4086 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4087 "%s %d %8phC post del sess\n", 4088 __func__, __LINE__, cmd->sess->port_name); 4089 4090 qlt_schedule_sess_for_deletion(cmd->sess); 4091 } 4092 break; 4093 } 4094 case CTIO_DIF_ERROR: { 4095 struct ctio_crc_from_fw *crc = 4096 (struct ctio_crc_from_fw *)ctio; 4097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4098 "qla_target(%d): CTIO with DIF_ERROR status %x " 4099 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 4100 "expect_dif[0x%llx]\n", 4101 vha->vp_idx, status, cmd->state, se_cmd, 4102 *((u64 *)&crc->actual_dif[0]), 4103 *((u64 *)&crc->expected_dif[0])); 4104 4105 qlt_handle_dif_error(qpair, cmd, ctio); 4106 return; 4107 } 4108 default: 4109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4110 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 4111 vha->vp_idx, status, cmd->state, se_cmd); 4112 break; 4113 } 4114 4115 4116 /* "cmd->aborted" means 4117 * cmd is already aborted/terminated, we don't 4118 * need to terminate again. The exchange is already 4119 * cleaned up/freed at FW level. Just cleanup at driver 4120 * level. 4121 */ 4122 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 4123 (!cmd->aborted)) { 4124 cmd->trc_flags |= TRC_CTIO_ERR; 4125 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 4126 return; 4127 } 4128 } 4129 4130 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4131 cmd->trc_flags |= TRC_CTIO_DONE; 4132 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4133 cmd->state = QLA_TGT_STATE_DATA_IN; 4134 4135 if (status == CTIO_SUCCESS) 4136 cmd->write_data_transferred = 1; 4137 4138 ha->tgt.tgt_ops->handle_data(cmd); 4139 return; 4140 } else if (cmd->aborted) { 4141 cmd->trc_flags |= TRC_CTIO_ABORTED; 4142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4143 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 4144 } else { 4145 cmd->trc_flags |= TRC_CTIO_STRANGE; 4146 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4147 "qla_target(%d): A command in state (%d) should " 4148 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 4149 } 4150 4151 if (unlikely(status != CTIO_SUCCESS) && 4152 !cmd->aborted) { 4153 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4154 dump_stack(); 4155 } 4156 4157 ha->tgt.tgt_ops->free_cmd(cmd); 4158 } 4159 4160 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4161 uint8_t task_codes) 4162 { 4163 int fcp_task_attr; 4164 4165 switch (task_codes) { 4166 case ATIO_SIMPLE_QUEUE: 4167 fcp_task_attr = TCM_SIMPLE_TAG; 4168 break; 4169 case ATIO_HEAD_OF_QUEUE: 4170 fcp_task_attr = TCM_HEAD_TAG; 4171 break; 4172 case ATIO_ORDERED_QUEUE: 4173 fcp_task_attr = TCM_ORDERED_TAG; 4174 break; 4175 case ATIO_ACA_QUEUE: 4176 fcp_task_attr = TCM_ACA_TAG; 4177 break; 4178 case ATIO_UNTAGGED: 4179 fcp_task_attr = TCM_SIMPLE_TAG; 4180 break; 4181 default: 4182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4183 "qla_target: unknown task code %x, use ORDERED instead\n", 4184 task_codes); 4185 fcp_task_attr = TCM_ORDERED_TAG; 4186 break; 4187 } 4188 4189 return fcp_task_attr; 4190 } 4191 4192 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 4193 uint8_t *); 4194 /* 4195 * Process context for I/O path into tcm_qla2xxx code 4196 */ 4197 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4198 { 4199 scsi_qla_host_t *vha = cmd->vha; 4200 struct qla_hw_data *ha = vha->hw; 4201 struct fc_port *sess = cmd->sess; 4202 struct atio_from_isp *atio = &cmd->atio; 4203 unsigned char *cdb; 4204 unsigned long flags; 4205 uint32_t data_length; 4206 int ret, fcp_task_attr, data_dir, bidi = 0; 4207 struct qla_qpair *qpair = cmd->qpair; 4208 4209 cmd->cmd_in_wq = 0; 4210 cmd->trc_flags |= TRC_DO_WORK; 4211 4212 if (cmd->aborted) { 4213 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4214 "cmd with tag %u is aborted\n", 4215 cmd->atio.u.isp24.exchange_addr); 4216 goto out_term; 4217 } 4218 4219 spin_lock_init(&cmd->cmd_lock); 4220 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 4221 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 4222 4223 if (atio->u.isp24.fcp_cmnd.rddata && 4224 atio->u.isp24.fcp_cmnd.wrdata) { 4225 bidi = 1; 4226 data_dir = DMA_TO_DEVICE; 4227 } else if (atio->u.isp24.fcp_cmnd.rddata) 4228 data_dir = DMA_FROM_DEVICE; 4229 else if (atio->u.isp24.fcp_cmnd.wrdata) 4230 data_dir = DMA_TO_DEVICE; 4231 else 4232 data_dir = DMA_NONE; 4233 4234 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4235 atio->u.isp24.fcp_cmnd.task_attr); 4236 data_length = get_datalen_for_atio(atio); 4237 4238 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4239 fcp_task_attr, data_dir, bidi); 4240 if (ret != 0) 4241 goto out_term; 4242 /* 4243 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 4244 */ 4245 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4246 ha->tgt.tgt_ops->put_sess(sess); 4247 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4248 return; 4249 4250 out_term: 4251 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4252 /* 4253 * cmd has not sent to target yet, so pass NULL as the second 4254 * argument to qlt_send_term_exchange() and free the memory here. 4255 */ 4256 cmd->trc_flags |= TRC_DO_WORK_ERR; 4257 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4258 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4259 4260 qlt_decr_num_pend_cmds(vha); 4261 target_free_tag(sess->se_sess, &cmd->se_cmd); 4262 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4263 4264 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4265 ha->tgt.tgt_ops->put_sess(sess); 4266 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4267 } 4268 4269 static void qlt_do_work(struct work_struct *work) 4270 { 4271 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4272 scsi_qla_host_t *vha = cmd->vha; 4273 unsigned long flags; 4274 4275 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4276 list_del(&cmd->cmd_list); 4277 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4278 4279 __qlt_do_work(cmd); 4280 } 4281 4282 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4283 { 4284 unsigned long flags; 4285 struct qla_hw_data *ha = vha->hw; 4286 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4287 void *node; 4288 u64 key = 0; 4289 4290 ql_log(ql_log_info, vha, 0x706c, 4291 "User update Number of Active Qpairs %d\n", 4292 ha->tgt.num_act_qpairs); 4293 4294 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4295 4296 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4297 btree_remove64(&tgt->lun_qpair_map, key); 4298 4299 ha->base_qpair->lun_cnt = 0; 4300 for (key = 0; key < ha->max_qpairs; key++) 4301 if (ha->queue_pair_map[key]) 4302 ha->queue_pair_map[key]->lun_cnt = 0; 4303 4304 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4305 } 4306 4307 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4308 struct qla_tgt_cmd *cmd) 4309 { 4310 struct qla_qpair *qpair, *qp; 4311 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4312 struct qla_qpair_hint *h; 4313 4314 if (vha->flags.qpairs_available) { 4315 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4316 if (unlikely(!h)) { 4317 /* spread lun to qpair ratio evently */ 4318 int lcnt = 0, rc; 4319 struct scsi_qla_host *base_vha = 4320 pci_get_drvdata(vha->hw->pdev); 4321 4322 qpair = vha->hw->base_qpair; 4323 if (qpair->lun_cnt == 0) { 4324 qpair->lun_cnt++; 4325 h = qla_qpair_to_hint(tgt, qpair); 4326 BUG_ON(!h); 4327 rc = btree_insert64(&tgt->lun_qpair_map, 4328 cmd->unpacked_lun, h, GFP_ATOMIC); 4329 if (rc) { 4330 qpair->lun_cnt--; 4331 ql_log(ql_log_info, vha, 0xd037, 4332 "Unable to insert lun %llx into lun_qpair_map\n", 4333 cmd->unpacked_lun); 4334 } 4335 goto out; 4336 } else { 4337 lcnt = qpair->lun_cnt; 4338 } 4339 4340 h = NULL; 4341 list_for_each_entry(qp, &base_vha->qp_list, 4342 qp_list_elem) { 4343 if (qp->lun_cnt == 0) { 4344 qp->lun_cnt++; 4345 h = qla_qpair_to_hint(tgt, qp); 4346 BUG_ON(!h); 4347 rc = btree_insert64(&tgt->lun_qpair_map, 4348 cmd->unpacked_lun, h, GFP_ATOMIC); 4349 if (rc) { 4350 qp->lun_cnt--; 4351 ql_log(ql_log_info, vha, 0xd038, 4352 "Unable to insert lun %llx into lun_qpair_map\n", 4353 cmd->unpacked_lun); 4354 } 4355 qpair = qp; 4356 goto out; 4357 } else { 4358 if (qp->lun_cnt < lcnt) { 4359 lcnt = qp->lun_cnt; 4360 qpair = qp; 4361 continue; 4362 } 4363 } 4364 } 4365 BUG_ON(!qpair); 4366 qpair->lun_cnt++; 4367 h = qla_qpair_to_hint(tgt, qpair); 4368 BUG_ON(!h); 4369 rc = btree_insert64(&tgt->lun_qpair_map, 4370 cmd->unpacked_lun, h, GFP_ATOMIC); 4371 if (rc) { 4372 qpair->lun_cnt--; 4373 ql_log(ql_log_info, vha, 0xd039, 4374 "Unable to insert lun %llx into lun_qpair_map\n", 4375 cmd->unpacked_lun); 4376 } 4377 } 4378 } else { 4379 h = &tgt->qphints[0]; 4380 } 4381 out: 4382 cmd->qpair = h->qpair; 4383 cmd->se_cmd.cpuid = h->cpuid; 4384 } 4385 4386 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4387 struct fc_port *sess, 4388 struct atio_from_isp *atio) 4389 { 4390 struct se_session *se_sess = sess->se_sess; 4391 struct qla_tgt_cmd *cmd; 4392 int tag, cpu; 4393 4394 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 4395 if (tag < 0) 4396 return NULL; 4397 4398 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4399 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4400 cmd->cmd_type = TYPE_TGT_CMD; 4401 memcpy(&cmd->atio, atio, sizeof(*atio)); 4402 cmd->state = QLA_TGT_STATE_NEW; 4403 cmd->tgt = vha->vha_tgt.qla_tgt; 4404 qlt_incr_num_pend_cmds(vha); 4405 cmd->vha = vha; 4406 cmd->se_cmd.map_tag = tag; 4407 cmd->se_cmd.map_cpu = cpu; 4408 cmd->sess = sess; 4409 cmd->loop_id = sess->loop_id; 4410 cmd->conf_compl_supported = sess->conf_compl_supported; 4411 4412 cmd->trc_flags = 0; 4413 cmd->jiffies_at_alloc = get_jiffies_64(); 4414 4415 cmd->unpacked_lun = scsilun_to_int( 4416 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4417 qlt_assign_qpair(vha, cmd); 4418 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4419 cmd->vp_idx = vha->vp_idx; 4420 4421 return cmd; 4422 } 4423 4424 /* ha->hardware_lock supposed to be held on entry */ 4425 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4426 struct atio_from_isp *atio) 4427 { 4428 struct qla_hw_data *ha = vha->hw; 4429 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4430 struct fc_port *sess; 4431 struct qla_tgt_cmd *cmd; 4432 unsigned long flags; 4433 port_id_t id; 4434 4435 if (unlikely(tgt->tgt_stop)) { 4436 ql_dbg(ql_dbg_io, vha, 0x3061, 4437 "New command while device %p is shutting down\n", tgt); 4438 return -ENODEV; 4439 } 4440 4441 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 4442 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 4443 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 4444 if (IS_SW_RESV_ADDR(id)) 4445 return -EBUSY; 4446 4447 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4448 if (unlikely(!sess)) 4449 return -EFAULT; 4450 4451 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4452 * session deletion, but it's still in sess_del_work wq */ 4453 if (sess->deleted) { 4454 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4455 "New command while old session %p is being deleted\n", 4456 sess); 4457 return -EFAULT; 4458 } 4459 4460 /* 4461 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4462 */ 4463 if (!kref_get_unless_zero(&sess->sess_kref)) { 4464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4465 "%s: kref_get fail, %8phC oxid %x \n", 4466 __func__, sess->port_name, 4467 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4468 return -EFAULT; 4469 } 4470 4471 cmd = qlt_get_tag(vha, sess, atio); 4472 if (!cmd) { 4473 ql_dbg(ql_dbg_io, vha, 0x3062, 4474 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4475 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4476 ha->tgt.tgt_ops->put_sess(sess); 4477 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4478 return -EBUSY; 4479 } 4480 4481 cmd->cmd_in_wq = 1; 4482 cmd->trc_flags |= TRC_NEW_CMD; 4483 4484 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4485 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4486 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4487 4488 INIT_WORK(&cmd->work, qlt_do_work); 4489 if (vha->flags.qpairs_available) { 4490 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4491 } else if (ha->msix_count) { 4492 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4493 queue_work_on(smp_processor_id(), qla_tgt_wq, 4494 &cmd->work); 4495 else 4496 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4497 &cmd->work); 4498 } else { 4499 queue_work(qla_tgt_wq, &cmd->work); 4500 } 4501 4502 return 0; 4503 } 4504 4505 /* ha->hardware_lock supposed to be held on entry */ 4506 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4507 int fn, void *iocb, int flags) 4508 { 4509 struct scsi_qla_host *vha = sess->vha; 4510 struct qla_hw_data *ha = vha->hw; 4511 struct qla_tgt_mgmt_cmd *mcmd; 4512 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4513 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4514 4515 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4516 if (!mcmd) { 4517 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4518 "qla_target(%d): Allocation of management " 4519 "command failed, some commands and their data could " 4520 "leak\n", vha->vp_idx); 4521 return -ENOMEM; 4522 } 4523 memset(mcmd, 0, sizeof(*mcmd)); 4524 mcmd->sess = sess; 4525 4526 if (iocb) { 4527 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4528 sizeof(mcmd->orig_iocb.imm_ntfy)); 4529 } 4530 mcmd->tmr_func = fn; 4531 mcmd->flags = flags; 4532 mcmd->reset_count = ha->base_qpair->chip_reset; 4533 mcmd->qpair = h->qpair; 4534 mcmd->vha = vha; 4535 mcmd->se_cmd.cpuid = h->cpuid; 4536 mcmd->unpacked_lun = lun; 4537 4538 switch (fn) { 4539 case QLA_TGT_LUN_RESET: 4540 case QLA_TGT_CLEAR_TS: 4541 case QLA_TGT_ABORT_TS: 4542 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4543 /* fall through */ 4544 case QLA_TGT_CLEAR_ACA: 4545 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4546 mcmd->qpair = h->qpair; 4547 mcmd->se_cmd.cpuid = h->cpuid; 4548 break; 4549 4550 case QLA_TGT_TARGET_RESET: 4551 case QLA_TGT_NEXUS_LOSS_SESS: 4552 case QLA_TGT_NEXUS_LOSS: 4553 case QLA_TGT_ABORT_ALL: 4554 default: 4555 /* no-op */ 4556 break; 4557 } 4558 4559 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4560 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4561 &mcmd->work); 4562 4563 return 0; 4564 } 4565 4566 /* ha->hardware_lock supposed to be held on entry */ 4567 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4568 { 4569 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4570 struct qla_hw_data *ha = vha->hw; 4571 struct fc_port *sess; 4572 u64 unpacked_lun; 4573 int fn; 4574 unsigned long flags; 4575 4576 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4577 4578 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4579 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4580 a->u.isp24.fcp_hdr.s_id); 4581 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4582 4583 unpacked_lun = 4584 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4585 4586 if (sess == NULL || sess->deleted) 4587 return -EFAULT; 4588 4589 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4590 } 4591 4592 /* ha->hardware_lock supposed to be held on entry */ 4593 static int __qlt_abort_task(struct scsi_qla_host *vha, 4594 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4595 { 4596 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4597 struct qla_hw_data *ha = vha->hw; 4598 struct qla_tgt_mgmt_cmd *mcmd; 4599 u64 unpacked_lun; 4600 int rc; 4601 4602 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4603 if (mcmd == NULL) { 4604 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4605 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4606 vha->vp_idx, __func__); 4607 return -ENOMEM; 4608 } 4609 memset(mcmd, 0, sizeof(*mcmd)); 4610 4611 mcmd->sess = sess; 4612 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4613 sizeof(mcmd->orig_iocb.imm_ntfy)); 4614 4615 unpacked_lun = 4616 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4617 mcmd->reset_count = ha->base_qpair->chip_reset; 4618 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4619 mcmd->qpair = ha->base_qpair; 4620 4621 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4622 le16_to_cpu(iocb->u.isp2x.seq_id)); 4623 if (rc != 0) { 4624 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4625 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4626 vha->vp_idx, rc); 4627 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4628 return -EFAULT; 4629 } 4630 4631 return 0; 4632 } 4633 4634 /* ha->hardware_lock supposed to be held on entry */ 4635 static int qlt_abort_task(struct scsi_qla_host *vha, 4636 struct imm_ntfy_from_isp *iocb) 4637 { 4638 struct qla_hw_data *ha = vha->hw; 4639 struct fc_port *sess; 4640 int loop_id; 4641 unsigned long flags; 4642 4643 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4644 4645 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4646 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4647 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4648 4649 if (sess == NULL) { 4650 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4651 "qla_target(%d): task abort for unexisting " 4652 "session\n", vha->vp_idx); 4653 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4654 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4655 } 4656 4657 return __qlt_abort_task(vha, iocb, sess); 4658 } 4659 4660 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4661 { 4662 if (rc != MBS_COMMAND_COMPLETE) { 4663 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4664 "%s: se_sess %p / sess %p from" 4665 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4666 " LOGO failed: %#x\n", 4667 __func__, 4668 fcport->se_sess, 4669 fcport, 4670 fcport->port_name, fcport->loop_id, 4671 fcport->d_id.b.domain, fcport->d_id.b.area, 4672 fcport->d_id.b.al_pa, rc); 4673 } 4674 4675 fcport->logout_completed = 1; 4676 } 4677 4678 /* 4679 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4680 * 4681 * Schedules sessions with matching port_id/loop_id but different wwn for 4682 * deletion. Returns existing session with matching wwn if present. 4683 * Null otherwise. 4684 */ 4685 struct fc_port * 4686 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4687 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4688 { 4689 struct fc_port *sess = NULL, *other_sess; 4690 uint64_t other_wwn; 4691 4692 *conflict_sess = NULL; 4693 4694 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4695 4696 other_wwn = wwn_to_u64(other_sess->port_name); 4697 4698 if (wwn == other_wwn) { 4699 WARN_ON(sess); 4700 sess = other_sess; 4701 continue; 4702 } 4703 4704 /* find other sess with nport_id collision */ 4705 if (port_id.b24 == other_sess->d_id.b24) { 4706 if (loop_id != other_sess->loop_id) { 4707 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4708 "Invalidating sess %p loop_id %d wwn %llx.\n", 4709 other_sess, other_sess->loop_id, other_wwn); 4710 4711 /* 4712 * logout_on_delete is set by default, but another 4713 * session that has the same s_id/loop_id combo 4714 * might have cleared it when requested this session 4715 * deletion, so don't touch it 4716 */ 4717 qlt_schedule_sess_for_deletion(other_sess); 4718 } else { 4719 /* 4720 * Another wwn used to have our s_id/loop_id 4721 * kill the session, but don't free the loop_id 4722 */ 4723 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, 4724 "Invalidating sess %p loop_id %d wwn %llx.\n", 4725 other_sess, other_sess->loop_id, other_wwn); 4726 4727 other_sess->keep_nport_handle = 1; 4728 if (other_sess->disc_state != DSC_DELETED) 4729 *conflict_sess = other_sess; 4730 qlt_schedule_sess_for_deletion(other_sess); 4731 } 4732 continue; 4733 } 4734 4735 /* find other sess with nport handle collision */ 4736 if ((loop_id == other_sess->loop_id) && 4737 (loop_id != FC_NO_LOOP_ID)) { 4738 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4739 "Invalidating sess %p loop_id %d wwn %llx.\n", 4740 other_sess, other_sess->loop_id, other_wwn); 4741 4742 /* Same loop_id but different s_id 4743 * Ok to kill and logout */ 4744 qlt_schedule_sess_for_deletion(other_sess); 4745 } 4746 } 4747 4748 return sess; 4749 } 4750 4751 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4752 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4753 { 4754 struct qla_tgt_sess_op *op; 4755 struct qla_tgt_cmd *cmd; 4756 uint32_t key; 4757 int count = 0; 4758 unsigned long flags; 4759 4760 key = (((u32)s_id->b.domain << 16) | 4761 ((u32)s_id->b.area << 8) | 4762 ((u32)s_id->b.al_pa)); 4763 4764 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4765 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4766 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4767 4768 if (op_key == key) { 4769 op->aborted = true; 4770 count++; 4771 } 4772 } 4773 4774 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4775 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4776 if (op_key == key) { 4777 op->aborted = true; 4778 count++; 4779 } 4780 } 4781 4782 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4783 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4784 if (cmd_key == key) { 4785 cmd->aborted = 1; 4786 count++; 4787 } 4788 } 4789 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4790 4791 return count; 4792 } 4793 4794 static int qlt_handle_login(struct scsi_qla_host *vha, 4795 struct imm_ntfy_from_isp *iocb) 4796 { 4797 struct fc_port *sess = NULL, *conflict_sess = NULL; 4798 uint64_t wwn; 4799 port_id_t port_id; 4800 uint16_t loop_id, wd3_lo; 4801 int res = 0; 4802 struct qlt_plogi_ack_t *pla; 4803 unsigned long flags; 4804 4805 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4806 4807 port_id.b.domain = iocb->u.isp24.port_id[2]; 4808 port_id.b.area = iocb->u.isp24.port_id[1]; 4809 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4810 port_id.b.rsvd_1 = 0; 4811 4812 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4813 4814 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 4815 abort_cmds_for_s_id(vha, &port_id); 4816 4817 if (wwn) { 4818 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 4819 sess = qlt_find_sess_invalidate_other(vha, wwn, 4820 port_id, loop_id, &conflict_sess); 4821 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 4822 } else { 4823 ql_dbg(ql_dbg_disc, vha, 0xffff, 4824 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 4825 __func__, __LINE__, loop_id, port_id.b24); 4826 qlt_send_term_imm_notif(vha, iocb, 1); 4827 goto out; 4828 } 4829 4830 if (IS_SW_RESV_ADDR(port_id)) { 4831 res = 1; 4832 goto out; 4833 } 4834 4835 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4836 if (!pla) { 4837 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 4838 "%s %d %8phC Term INOT due to mem alloc fail", 4839 __func__, __LINE__, 4840 iocb->u.isp24.port_name); 4841 qlt_send_term_imm_notif(vha, iocb, 1); 4842 goto out; 4843 } 4844 4845 if (conflict_sess) { 4846 conflict_sess->login_gen++; 4847 qlt_plogi_ack_link(vha, pla, conflict_sess, 4848 QLT_PLOGI_LINK_CONFLICT); 4849 } 4850 4851 if (!sess) { 4852 pla->ref_count++; 4853 ql_dbg(ql_dbg_disc, vha, 0xffff, 4854 "%s %d %8phC post new sess\n", 4855 __func__, __LINE__, iocb->u.isp24.port_name); 4856 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 4857 qla24xx_post_newsess_work(vha, &port_id, 4858 iocb->u.isp24.port_name, 4859 iocb->u.isp24.u.plogi.node_name, 4860 pla, FC4_TYPE_UNKNOWN); 4861 else 4862 qla24xx_post_newsess_work(vha, &port_id, 4863 iocb->u.isp24.port_name, NULL, 4864 pla, FC4_TYPE_UNKNOWN); 4865 4866 goto out; 4867 } 4868 4869 if (sess->disc_state == DSC_UPD_FCPORT) { 4870 u16 sec; 4871 4872 /* 4873 * Remote port registration is still going on from 4874 * previous login. Allow it to finish before we 4875 * accept the new login. 4876 */ 4877 sess->next_disc_state = DSC_DELETE_PEND; 4878 sec = jiffies_to_msecs(jiffies - 4879 sess->jiffies_at_registration) / 1000; 4880 if (sess->sec_since_registration < sec && sec && 4881 !(sec % 5)) { 4882 sess->sec_since_registration = sec; 4883 ql_dbg(ql_dbg_disc, vha, 0xffff, 4884 "%s %8phC - Slow Rport registration (%d Sec)\n", 4885 __func__, sess->port_name, sec); 4886 } 4887 4888 if (!conflict_sess) 4889 kmem_cache_free(qla_tgt_plogi_cachep, pla); 4890 4891 qlt_send_term_imm_notif(vha, iocb, 1); 4892 goto out; 4893 } 4894 4895 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4896 sess->d_id = port_id; 4897 sess->login_gen++; 4898 4899 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 4900 sess->fw_login_state = DSC_LS_PRLI_PEND; 4901 sess->local = 0; 4902 sess->loop_id = loop_id; 4903 sess->d_id = port_id; 4904 sess->fw_login_state = DSC_LS_PRLI_PEND; 4905 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4906 4907 if (wd3_lo & BIT_7) 4908 sess->conf_compl_supported = 1; 4909 4910 if ((wd3_lo & BIT_4) == 0) 4911 sess->port_type = FCT_INITIATOR; 4912 else 4913 sess->port_type = FCT_TARGET; 4914 4915 } else 4916 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4917 4918 4919 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4920 "%s %d %8phC DS %d\n", 4921 __func__, __LINE__, sess->port_name, sess->disc_state); 4922 4923 switch (sess->disc_state) { 4924 case DSC_DELETED: 4925 qlt_plogi_ack_unref(vha, pla); 4926 break; 4927 4928 default: 4929 /* 4930 * Under normal circumstances we want to release nport handle 4931 * during LOGO process to avoid nport handle leaks inside FW. 4932 * The exception is when LOGO is done while another PLOGI with 4933 * the same nport handle is waiting as might be the case here. 4934 * Note: there is always a possibily of a race where session 4935 * deletion has already started for other reasons (e.g. ACL 4936 * removal) and now PLOGI arrives: 4937 * 1. if PLOGI arrived in FW after nport handle has been freed, 4938 * FW must have assigned this PLOGI a new/same handle and we 4939 * can proceed ACK'ing it as usual when session deletion 4940 * completes. 4941 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4942 * bit reached it, the handle has now been released. We'll 4943 * get an error when we ACK this PLOGI. Nothing will be sent 4944 * back to initiator. Initiator should eventually retry 4945 * PLOGI and situation will correct itself. 4946 */ 4947 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4948 (sess->d_id.b24 == port_id.b24)); 4949 4950 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4951 "%s %d %8phC post del sess\n", 4952 __func__, __LINE__, sess->port_name); 4953 4954 4955 qlt_schedule_sess_for_deletion(sess); 4956 break; 4957 } 4958 out: 4959 return res; 4960 } 4961 4962 /* 4963 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4964 */ 4965 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4966 struct imm_ntfy_from_isp *iocb) 4967 { 4968 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4969 struct qla_hw_data *ha = vha->hw; 4970 struct fc_port *sess = NULL, *conflict_sess = NULL; 4971 uint64_t wwn; 4972 port_id_t port_id; 4973 uint16_t loop_id; 4974 uint16_t wd3_lo; 4975 int res = 0; 4976 unsigned long flags; 4977 4978 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4979 4980 port_id.b.domain = iocb->u.isp24.port_id[2]; 4981 port_id.b.area = iocb->u.isp24.port_id[1]; 4982 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4983 port_id.b.rsvd_1 = 0; 4984 4985 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4986 4987 ql_dbg(ql_dbg_disc, vha, 0xf026, 4988 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4989 vha->vp_idx, iocb->u.isp24.port_id[2], 4990 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4991 iocb->u.isp24.status_subcode, loop_id, 4992 iocb->u.isp24.port_name); 4993 4994 /* res = 1 means ack at the end of thread 4995 * res = 0 means ack async/later. 4996 */ 4997 switch (iocb->u.isp24.status_subcode) { 4998 case ELS_PLOGI: 4999 res = qlt_handle_login(vha, iocb); 5000 break; 5001 5002 case ELS_PRLI: 5003 if (N2N_TOPO(ha)) { 5004 sess = qla2x00_find_fcport_by_wwpn(vha, 5005 iocb->u.isp24.port_name, 1); 5006 5007 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 5008 ql_dbg(ql_dbg_disc, vha, 0xffff, 5009 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 5010 __func__, __LINE__, 5011 iocb->u.isp24.port_name); 5012 qlt_send_term_imm_notif(vha, iocb, 1); 5013 break; 5014 } 5015 5016 res = qlt_handle_login(vha, iocb); 5017 break; 5018 } 5019 5020 if (IS_SW_RESV_ADDR(port_id)) { 5021 res = 1; 5022 break; 5023 } 5024 5025 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5026 5027 if (wwn) { 5028 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5029 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 5030 loop_id, &conflict_sess); 5031 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5032 } 5033 5034 if (conflict_sess) { 5035 switch (conflict_sess->disc_state) { 5036 case DSC_DELETED: 5037 case DSC_DELETE_PEND: 5038 break; 5039 default: 5040 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 5041 "PRLI with conflicting sess %p port %8phC\n", 5042 conflict_sess, conflict_sess->port_name); 5043 conflict_sess->fw_login_state = 5044 DSC_LS_PORT_UNAVAIL; 5045 qlt_send_term_imm_notif(vha, iocb, 1); 5046 res = 0; 5047 break; 5048 } 5049 } 5050 5051 if (sess != NULL) { 5052 bool delete = false; 5053 int sec; 5054 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 5055 switch (sess->fw_login_state) { 5056 case DSC_LS_PLOGI_PEND: 5057 case DSC_LS_PLOGI_COMP: 5058 case DSC_LS_PRLI_COMP: 5059 break; 5060 default: 5061 delete = true; 5062 break; 5063 } 5064 5065 switch (sess->disc_state) { 5066 case DSC_UPD_FCPORT: 5067 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5068 flags); 5069 5070 sec = jiffies_to_msecs(jiffies - 5071 sess->jiffies_at_registration)/1000; 5072 if (sess->sec_since_registration < sec && sec && 5073 !(sec % 5)) { 5074 sess->sec_since_registration = sec; 5075 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 5076 "%s %8phC : Slow Rport registration(%d Sec)\n", 5077 __func__, sess->port_name, sec); 5078 } 5079 qlt_send_term_imm_notif(vha, iocb, 1); 5080 return 0; 5081 5082 case DSC_LOGIN_PEND: 5083 case DSC_GPDB: 5084 case DSC_LOGIN_COMPLETE: 5085 case DSC_ADISC: 5086 delete = false; 5087 break; 5088 default: 5089 break; 5090 } 5091 5092 if (delete) { 5093 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 5094 flags); 5095 /* 5096 * Impatient initiator sent PRLI before last 5097 * PLOGI could finish. Will force him to re-try, 5098 * while last one finishes. 5099 */ 5100 ql_log(ql_log_warn, sess->vha, 0xf095, 5101 "sess %p PRLI received, before plogi ack.\n", 5102 sess); 5103 qlt_send_term_imm_notif(vha, iocb, 1); 5104 res = 0; 5105 break; 5106 } 5107 5108 /* 5109 * This shouldn't happen under normal circumstances, 5110 * since we have deleted the old session during PLOGI 5111 */ 5112 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 5113 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 5114 sess->loop_id, sess, iocb->u.isp24.nport_handle); 5115 5116 sess->local = 0; 5117 sess->loop_id = loop_id; 5118 sess->d_id = port_id; 5119 sess->fw_login_state = DSC_LS_PRLI_PEND; 5120 5121 if (wd3_lo & BIT_7) 5122 sess->conf_compl_supported = 1; 5123 5124 if ((wd3_lo & BIT_4) == 0) 5125 sess->port_type = FCT_INITIATOR; 5126 else 5127 sess->port_type = FCT_TARGET; 5128 5129 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 5130 } 5131 res = 1; /* send notify ack */ 5132 5133 /* Make session global (not used in fabric mode) */ 5134 if (ha->current_topology != ISP_CFG_F) { 5135 if (sess) { 5136 ql_dbg(ql_dbg_disc, vha, 0x20fa, 5137 "%s %d %8phC post nack\n", 5138 __func__, __LINE__, sess->port_name); 5139 qla24xx_post_nack_work(vha, sess, iocb, 5140 SRB_NACK_PRLI); 5141 res = 0; 5142 } else { 5143 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 5144 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 5145 qla2xxx_wake_dpc(vha); 5146 } 5147 } else { 5148 if (sess) { 5149 ql_dbg(ql_dbg_disc, vha, 0x20fb, 5150 "%s %d %8phC post nack\n", 5151 __func__, __LINE__, sess->port_name); 5152 qla24xx_post_nack_work(vha, sess, iocb, 5153 SRB_NACK_PRLI); 5154 res = 0; 5155 } 5156 } 5157 break; 5158 5159 case ELS_TPRLO: 5160 if (le16_to_cpu(iocb->u.isp24.flags) & 5161 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 5162 loop_id = 0xFFFF; 5163 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 5164 res = 1; 5165 break; 5166 } 5167 /* fall through */ 5168 case ELS_LOGO: 5169 case ELS_PRLO: 5170 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5171 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 5172 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5173 5174 if (sess) { 5175 sess->login_gen++; 5176 sess->fw_login_state = DSC_LS_LOGO_PEND; 5177 sess->logo_ack_needed = 1; 5178 memcpy(sess->iocb, iocb, IOCB_SIZE); 5179 } 5180 5181 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5182 5183 ql_dbg(ql_dbg_disc, vha, 0x20fc, 5184 "%s: logo %llx res %d sess %p ", 5185 __func__, wwn, res, sess); 5186 if (res == 0) { 5187 /* 5188 * cmd went upper layer, look for qlt_xmit_tm_rsp() 5189 * for LOGO_ACK & sess delete 5190 */ 5191 BUG_ON(!sess); 5192 res = 0; 5193 } else { 5194 /* cmd did not go to upper layer. */ 5195 if (sess) { 5196 qlt_schedule_sess_for_deletion(sess); 5197 res = 0; 5198 } 5199 /* else logo will be ack */ 5200 } 5201 break; 5202 case ELS_PDISC: 5203 case ELS_ADISC: 5204 { 5205 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5206 if (tgt->link_reinit_iocb_pending) { 5207 qlt_send_notify_ack(ha->base_qpair, 5208 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5209 tgt->link_reinit_iocb_pending = 0; 5210 } 5211 5212 sess = qla2x00_find_fcport_by_wwpn(vha, 5213 iocb->u.isp24.port_name, 1); 5214 if (sess) { 5215 ql_dbg(ql_dbg_disc, vha, 0x20fd, 5216 "sess %p lid %d|%d DS %d LS %d\n", 5217 sess, sess->loop_id, loop_id, 5218 sess->disc_state, sess->fw_login_state); 5219 } 5220 5221 res = 1; /* send notify ack */ 5222 break; 5223 } 5224 5225 case ELS_FLOGI: /* should never happen */ 5226 default: 5227 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 5228 "qla_target(%d): Unsupported ELS command %x " 5229 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 5230 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 5231 break; 5232 } 5233 5234 ql_dbg(ql_dbg_disc, vha, 0xf026, 5235 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 5236 vha->vp_idx, iocb->u.isp24.status_subcode, res); 5237 5238 return res; 5239 } 5240 5241 /* 5242 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5243 */ 5244 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5245 struct imm_ntfy_from_isp *iocb) 5246 { 5247 struct qla_hw_data *ha = vha->hw; 5248 uint32_t add_flags = 0; 5249 int send_notify_ack = 1; 5250 uint16_t status; 5251 5252 status = le16_to_cpu(iocb->u.isp2x.status); 5253 switch (status) { 5254 case IMM_NTFY_LIP_RESET: 5255 { 5256 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5257 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5258 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5259 iocb->u.isp24.status_subcode); 5260 5261 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5262 send_notify_ack = 0; 5263 break; 5264 } 5265 5266 case IMM_NTFY_LIP_LINK_REINIT: 5267 { 5268 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5269 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5270 "qla_target(%d): LINK REINIT (loop %#x, " 5271 "subcode %x)\n", vha->vp_idx, 5272 le16_to_cpu(iocb->u.isp24.nport_handle), 5273 iocb->u.isp24.status_subcode); 5274 if (tgt->link_reinit_iocb_pending) { 5275 qlt_send_notify_ack(ha->base_qpair, 5276 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 5277 } 5278 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5279 tgt->link_reinit_iocb_pending = 1; 5280 /* 5281 * QLogic requires to wait after LINK REINIT for possible 5282 * PDISC or ADISC ELS commands 5283 */ 5284 send_notify_ack = 0; 5285 break; 5286 } 5287 5288 case IMM_NTFY_PORT_LOGOUT: 5289 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5290 "qla_target(%d): Port logout (loop " 5291 "%#x, subcode %x)\n", vha->vp_idx, 5292 le16_to_cpu(iocb->u.isp24.nport_handle), 5293 iocb->u.isp24.status_subcode); 5294 5295 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5296 send_notify_ack = 0; 5297 /* The sessions will be cleared in the callback, if needed */ 5298 break; 5299 5300 case IMM_NTFY_GLBL_TPRLO: 5301 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5302 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5303 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5304 send_notify_ack = 0; 5305 /* The sessions will be cleared in the callback, if needed */ 5306 break; 5307 5308 case IMM_NTFY_PORT_CONFIG: 5309 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5310 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5311 status); 5312 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5313 send_notify_ack = 0; 5314 /* The sessions will be cleared in the callback, if needed */ 5315 break; 5316 5317 case IMM_NTFY_GLBL_LOGO: 5318 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5319 "qla_target(%d): Link failure detected\n", 5320 vha->vp_idx); 5321 /* I_T nexus loss */ 5322 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5323 send_notify_ack = 0; 5324 break; 5325 5326 case IMM_NTFY_IOCB_OVERFLOW: 5327 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5328 "qla_target(%d): Cannot provide requested " 5329 "capability (IOCB overflowed the immediate notify " 5330 "resource count)\n", vha->vp_idx); 5331 break; 5332 5333 case IMM_NTFY_ABORT_TASK: 5334 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5335 "qla_target(%d): Abort Task (S %08x I %#x -> " 5336 "L %#x)\n", vha->vp_idx, 5337 le16_to_cpu(iocb->u.isp2x.seq_id), 5338 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5339 le16_to_cpu(iocb->u.isp2x.lun)); 5340 if (qlt_abort_task(vha, iocb) == 0) 5341 send_notify_ack = 0; 5342 break; 5343 5344 case IMM_NTFY_RESOURCE: 5345 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5346 "qla_target(%d): Out of resources, host %ld\n", 5347 vha->vp_idx, vha->host_no); 5348 break; 5349 5350 case IMM_NTFY_MSG_RX: 5351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5352 "qla_target(%d): Immediate notify task %x\n", 5353 vha->vp_idx, iocb->u.isp2x.task_flags); 5354 break; 5355 5356 case IMM_NTFY_ELS: 5357 if (qlt_24xx_handle_els(vha, iocb) == 0) 5358 send_notify_ack = 0; 5359 break; 5360 default: 5361 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5362 "qla_target(%d): Received unknown immediate " 5363 "notify status %x\n", vha->vp_idx, status); 5364 break; 5365 } 5366 5367 if (send_notify_ack) 5368 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5369 0, 0); 5370 } 5371 5372 /* 5373 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5374 * This function sends busy to ISP 2xxx or 24xx. 5375 */ 5376 static int __qlt_send_busy(struct qla_qpair *qpair, 5377 struct atio_from_isp *atio, uint16_t status) 5378 { 5379 struct scsi_qla_host *vha = qpair->vha; 5380 struct ctio7_to_24xx *ctio24; 5381 struct qla_hw_data *ha = vha->hw; 5382 request_t *pkt; 5383 struct fc_port *sess = NULL; 5384 unsigned long flags; 5385 u16 temp; 5386 port_id_t id; 5387 5388 id.b.al_pa = atio->u.isp24.fcp_hdr.s_id[2]; 5389 id.b.area = atio->u.isp24.fcp_hdr.s_id[1]; 5390 id.b.domain = atio->u.isp24.fcp_hdr.s_id[0]; 5391 id.b.rsvd_1 = 0; 5392 5393 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5394 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 5395 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5396 if (!sess) { 5397 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5398 return 0; 5399 } 5400 /* Sending marker isn't necessary, since we called from ISR */ 5401 5402 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5403 if (!pkt) { 5404 ql_dbg(ql_dbg_io, vha, 0x3063, 5405 "qla_target(%d): %s failed: unable to allocate " 5406 "request packet", vha->vp_idx, __func__); 5407 return -ENOMEM; 5408 } 5409 5410 qpair->tgt_counters.num_q_full_sent++; 5411 pkt->entry_count = 1; 5412 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5413 5414 ctio24 = (struct ctio7_to_24xx *)pkt; 5415 ctio24->entry_type = CTIO_TYPE7; 5416 ctio24->nport_handle = sess->loop_id; 5417 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5418 ctio24->vp_index = vha->vp_idx; 5419 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5420 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5421 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5422 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5423 temp = (atio->u.isp24.attr << 9) | 5424 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5425 CTIO7_FLAGS_DONT_RET_CTIO; 5426 ctio24->u.status1.flags = cpu_to_le16(temp); 5427 /* 5428 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5429 * if the explicit conformation is used. 5430 */ 5431 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5432 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5433 5434 ctio24->u.status1.residual = get_datalen_for_atio(atio); 5435 5436 if (ctio24->u.status1.residual != 0) 5437 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 5438 5439 /* Memory Barrier */ 5440 wmb(); 5441 if (qpair->reqq_start_iocbs) 5442 qpair->reqq_start_iocbs(qpair); 5443 else 5444 qla2x00_start_iocbs(vha, qpair->req); 5445 return 0; 5446 } 5447 5448 /* 5449 * This routine is used to allocate a command for either a QFull condition 5450 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5451 * out previously. 5452 */ 5453 static void 5454 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5455 struct atio_from_isp *atio, uint16_t status, int qfull) 5456 { 5457 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5458 struct qla_hw_data *ha = vha->hw; 5459 struct fc_port *sess; 5460 struct se_session *se_sess; 5461 struct qla_tgt_cmd *cmd; 5462 int tag, cpu; 5463 unsigned long flags; 5464 5465 if (unlikely(tgt->tgt_stop)) { 5466 ql_dbg(ql_dbg_io, vha, 0x300a, 5467 "New command while device %p is shutting down\n", tgt); 5468 return; 5469 } 5470 5471 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5472 vha->hw->tgt.num_qfull_cmds_dropped++; 5473 if (vha->hw->tgt.num_qfull_cmds_dropped > 5474 vha->qla_stats.stat_max_qfull_cmds_dropped) 5475 vha->qla_stats.stat_max_qfull_cmds_dropped = 5476 vha->hw->tgt.num_qfull_cmds_dropped; 5477 5478 ql_dbg(ql_dbg_io, vha, 0x3068, 5479 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5480 vha->vp_idx, __func__, 5481 vha->hw->tgt.num_qfull_cmds_dropped); 5482 5483 qlt_chk_exch_leak_thresh_hold(vha); 5484 return; 5485 } 5486 5487 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5488 (vha, atio->u.isp24.fcp_hdr.s_id); 5489 if (!sess) 5490 return; 5491 5492 se_sess = sess->se_sess; 5493 5494 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 5495 if (tag < 0) 5496 return; 5497 5498 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5499 if (!cmd) { 5500 ql_dbg(ql_dbg_io, vha, 0x3009, 5501 "qla_target(%d): %s: Allocation of cmd failed\n", 5502 vha->vp_idx, __func__); 5503 5504 vha->hw->tgt.num_qfull_cmds_dropped++; 5505 if (vha->hw->tgt.num_qfull_cmds_dropped > 5506 vha->qla_stats.stat_max_qfull_cmds_dropped) 5507 vha->qla_stats.stat_max_qfull_cmds_dropped = 5508 vha->hw->tgt.num_qfull_cmds_dropped; 5509 5510 qlt_chk_exch_leak_thresh_hold(vha); 5511 return; 5512 } 5513 5514 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5515 5516 qlt_incr_num_pend_cmds(vha); 5517 INIT_LIST_HEAD(&cmd->cmd_list); 5518 memcpy(&cmd->atio, atio, sizeof(*atio)); 5519 5520 cmd->tgt = vha->vha_tgt.qla_tgt; 5521 cmd->vha = vha; 5522 cmd->reset_count = ha->base_qpair->chip_reset; 5523 cmd->q_full = 1; 5524 cmd->qpair = ha->base_qpair; 5525 cmd->se_cmd.map_cpu = cpu; 5526 5527 if (qfull) { 5528 cmd->q_full = 1; 5529 /* NOTE: borrowing the state field to carry the status */ 5530 cmd->state = status; 5531 } else 5532 cmd->term_exchg = 1; 5533 5534 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5535 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5536 5537 vha->hw->tgt.num_qfull_cmds_alloc++; 5538 if (vha->hw->tgt.num_qfull_cmds_alloc > 5539 vha->qla_stats.stat_max_qfull_cmds_alloc) 5540 vha->qla_stats.stat_max_qfull_cmds_alloc = 5541 vha->hw->tgt.num_qfull_cmds_alloc; 5542 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5543 } 5544 5545 int 5546 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5547 { 5548 struct scsi_qla_host *vha = qpair->vha; 5549 struct qla_hw_data *ha = vha->hw; 5550 unsigned long flags; 5551 struct qla_tgt_cmd *cmd, *tcmd; 5552 struct list_head free_list, q_full_list; 5553 int rc = 0; 5554 5555 if (list_empty(&ha->tgt.q_full_list)) 5556 return 0; 5557 5558 INIT_LIST_HEAD(&free_list); 5559 INIT_LIST_HEAD(&q_full_list); 5560 5561 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5562 if (list_empty(&ha->tgt.q_full_list)) { 5563 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5564 return 0; 5565 } 5566 5567 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5568 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5569 5570 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5571 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5572 if (cmd->q_full) 5573 /* cmd->state is a borrowed field to hold status */ 5574 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5575 else if (cmd->term_exchg) 5576 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5577 5578 if (rc == -ENOMEM) 5579 break; 5580 5581 if (cmd->q_full) 5582 ql_dbg(ql_dbg_io, vha, 0x3006, 5583 "%s: busy sent for ox_id[%04x]\n", __func__, 5584 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5585 else if (cmd->term_exchg) 5586 ql_dbg(ql_dbg_io, vha, 0x3007, 5587 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5588 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5589 else 5590 ql_dbg(ql_dbg_io, vha, 0x3008, 5591 "%s: Unexpected cmd in QFull list %p\n", __func__, 5592 cmd); 5593 5594 list_del(&cmd->cmd_list); 5595 list_add_tail(&cmd->cmd_list, &free_list); 5596 5597 /* piggy back on hardware_lock for protection */ 5598 vha->hw->tgt.num_qfull_cmds_alloc--; 5599 } 5600 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5601 5602 cmd = NULL; 5603 5604 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5605 list_del(&cmd->cmd_list); 5606 /* This cmd was never sent to TCM. There is no need 5607 * to schedule free or call free_cmd 5608 */ 5609 qlt_free_cmd(cmd); 5610 } 5611 5612 if (!list_empty(&q_full_list)) { 5613 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5614 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5615 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5616 } 5617 5618 return rc; 5619 } 5620 5621 static void 5622 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5623 uint16_t status) 5624 { 5625 int rc = 0; 5626 struct scsi_qla_host *vha = qpair->vha; 5627 5628 rc = __qlt_send_busy(qpair, atio, status); 5629 if (rc == -ENOMEM) 5630 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5631 } 5632 5633 static int 5634 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5635 struct atio_from_isp *atio, uint8_t ha_locked) 5636 { 5637 struct qla_hw_data *ha = vha->hw; 5638 unsigned long flags; 5639 5640 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5641 return 0; 5642 5643 if (!ha_locked) 5644 spin_lock_irqsave(&ha->hardware_lock, flags); 5645 qlt_send_busy(qpair, atio, qla_sam_status); 5646 if (!ha_locked) 5647 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5648 5649 return 1; 5650 } 5651 5652 /* ha->hardware_lock supposed to be held on entry */ 5653 /* called via callback from qla2xxx */ 5654 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5655 struct atio_from_isp *atio, uint8_t ha_locked) 5656 { 5657 struct qla_hw_data *ha = vha->hw; 5658 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5659 int rc; 5660 unsigned long flags = 0; 5661 5662 if (unlikely(tgt == NULL)) { 5663 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5664 "ATIO pkt, but no tgt (ha %p)", ha); 5665 return; 5666 } 5667 /* 5668 * In tgt_stop mode we also should allow all requests to pass. 5669 * Otherwise, some commands can stuck. 5670 */ 5671 5672 tgt->atio_irq_cmd_count++; 5673 5674 switch (atio->u.raw.entry_type) { 5675 case ATIO_TYPE7: 5676 if (unlikely(atio->u.isp24.exchange_addr == 5677 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5678 ql_dbg(ql_dbg_io, vha, 0x3065, 5679 "qla_target(%d): ATIO_TYPE7 " 5680 "received with UNKNOWN exchange address, " 5681 "sending QUEUE_FULL\n", vha->vp_idx); 5682 if (!ha_locked) 5683 spin_lock_irqsave(&ha->hardware_lock, flags); 5684 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 5685 if (!ha_locked) 5686 spin_unlock_irqrestore(&ha->hardware_lock, 5687 flags); 5688 break; 5689 } 5690 5691 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5692 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5693 atio, ha_locked); 5694 if (rc != 0) { 5695 tgt->atio_irq_cmd_count--; 5696 return; 5697 } 5698 rc = qlt_handle_cmd_for_atio(vha, atio); 5699 } else { 5700 rc = qlt_handle_task_mgmt(vha, atio); 5701 } 5702 if (unlikely(rc != 0)) { 5703 if (!ha_locked) 5704 spin_lock_irqsave(&ha->hardware_lock, flags); 5705 switch (rc) { 5706 case -ENODEV: 5707 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5708 "qla_target: Unable to send command to target\n"); 5709 break; 5710 case -EBADF: 5711 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5712 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5713 qlt_send_term_exchange(ha->base_qpair, NULL, 5714 atio, 1, 0); 5715 break; 5716 case -EBUSY: 5717 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5718 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5719 vha->vp_idx); 5720 qlt_send_busy(ha->base_qpair, atio, 5721 tc_sam_status); 5722 break; 5723 default: 5724 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5725 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5726 vha->vp_idx); 5727 qlt_send_busy(ha->base_qpair, atio, 5728 qla_sam_status); 5729 break; 5730 } 5731 if (!ha_locked) 5732 spin_unlock_irqrestore(&ha->hardware_lock, 5733 flags); 5734 } 5735 break; 5736 5737 case IMMED_NOTIFY_TYPE: 5738 { 5739 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5740 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5741 "qla_target(%d): Received ATIO packet %x " 5742 "with error status %x\n", vha->vp_idx, 5743 atio->u.raw.entry_type, 5744 atio->u.isp2x.entry_status); 5745 break; 5746 } 5747 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5748 5749 if (!ha_locked) 5750 spin_lock_irqsave(&ha->hardware_lock, flags); 5751 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5752 if (!ha_locked) 5753 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5754 break; 5755 } 5756 5757 default: 5758 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5759 "qla_target(%d): Received unknown ATIO atio " 5760 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5761 break; 5762 } 5763 5764 tgt->atio_irq_cmd_count--; 5765 } 5766 5767 /* 5768 * qpair lock is assume to be held 5769 * rc = 0 : send terminate & abts respond 5770 * rc != 0: do not send term & abts respond 5771 */ 5772 static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 5773 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 5774 { 5775 struct qla_hw_data *ha = vha->hw; 5776 int rc = 0; 5777 5778 /* 5779 * Detect unresolved exchange. If the same ABTS is unable 5780 * to terminate an existing command and the same ABTS loops 5781 * between FW & Driver, then force FW dump. Under 1 jiff, 5782 * we should see multiple loops. 5783 */ 5784 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 5785 qpair->retry_term_jiff == jiffies) { 5786 /* found existing exchange */ 5787 qpair->retry_term_cnt++; 5788 if (qpair->retry_term_cnt >= 5) { 5789 rc = EIO; 5790 qpair->retry_term_cnt = 0; 5791 ql_log(ql_log_warn, vha, 0xffff, 5792 "Unable to send ABTS Respond. Dumping firmware.\n"); 5793 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 5794 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 5795 5796 if (qpair == ha->base_qpair) 5797 ha->isp_ops->fw_dump(vha, 1); 5798 else 5799 ha->isp_ops->fw_dump(vha, 0); 5800 5801 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5802 qla2xxx_wake_dpc(vha); 5803 } 5804 } else if (qpair->retry_term_jiff != jiffies) { 5805 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 5806 qpair->retry_term_cnt = 0; 5807 qpair->retry_term_jiff = jiffies; 5808 } 5809 5810 return rc; 5811 } 5812 5813 5814 static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 5815 struct rsp_que *rsp, response_t *pkt) 5816 { 5817 struct abts_resp_from_24xx_fw *entry = 5818 (struct abts_resp_from_24xx_fw *)pkt; 5819 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 5820 struct qla_tgt_mgmt_cmd *mcmd; 5821 struct qla_hw_data *ha = vha->hw; 5822 5823 mcmd = (struct qla_tgt_mgmt_cmd *)qlt_ctio_to_cmd(vha, rsp, 5824 pkt->handle, pkt); 5825 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 5826 ql_dbg(ql_dbg_async, vha, 0xe064, 5827 "qla_target(%d): ABTS Comp without mcmd\n", 5828 vha->vp_idx); 5829 return; 5830 } 5831 5832 if (mcmd) 5833 vha = mcmd->vha; 5834 vha->vha_tgt.qla_tgt->abts_resp_expected--; 5835 5836 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5837 "ABTS_RESP_24XX: compl_status %x\n", 5838 entry->compl_status); 5839 5840 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 5841 if ((entry->error_subcode1 == 0x1E) && 5842 (entry->error_subcode2 == 0)) { 5843 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 5844 ha->tgt.tgt_ops->free_mcmd(mcmd); 5845 return; 5846 } 5847 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 5848 pkt, mcmd); 5849 } else { 5850 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5851 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 5852 vha->vp_idx, entry->compl_status, 5853 entry->error_subcode1, 5854 entry->error_subcode2); 5855 ha->tgt.tgt_ops->free_mcmd(mcmd); 5856 } 5857 } else { 5858 ha->tgt.tgt_ops->free_mcmd(mcmd); 5859 } 5860 } 5861 5862 /* ha->hardware_lock supposed to be held on entry */ 5863 /* called via callback from qla2xxx */ 5864 static void qlt_response_pkt(struct scsi_qla_host *vha, 5865 struct rsp_que *rsp, response_t *pkt) 5866 { 5867 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5868 5869 if (unlikely(tgt == NULL)) { 5870 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5871 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5872 vha->vp_idx, pkt->entry_type, vha->hw); 5873 return; 5874 } 5875 5876 /* 5877 * In tgt_stop mode we also should allow all requests to pass. 5878 * Otherwise, some commands can stuck. 5879 */ 5880 5881 switch (pkt->entry_type) { 5882 case CTIO_CRC2: 5883 case CTIO_TYPE7: 5884 { 5885 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5886 qlt_do_ctio_completion(vha, rsp, entry->handle, 5887 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5888 entry); 5889 break; 5890 } 5891 5892 case ACCEPT_TGT_IO_TYPE: 5893 { 5894 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5895 int rc; 5896 if (atio->u.isp2x.status != 5897 cpu_to_le16(ATIO_CDB_VALID)) { 5898 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5899 "qla_target(%d): ATIO with error " 5900 "status %x received\n", vha->vp_idx, 5901 le16_to_cpu(atio->u.isp2x.status)); 5902 break; 5903 } 5904 5905 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5906 if (rc != 0) 5907 return; 5908 5909 rc = qlt_handle_cmd_for_atio(vha, atio); 5910 if (unlikely(rc != 0)) { 5911 switch (rc) { 5912 case -ENODEV: 5913 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5914 "qla_target: Unable to send command to target\n"); 5915 break; 5916 case -EBADF: 5917 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5918 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 5919 qlt_send_term_exchange(rsp->qpair, NULL, 5920 atio, 1, 0); 5921 break; 5922 case -EBUSY: 5923 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5924 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5925 vha->vp_idx); 5926 qlt_send_busy(rsp->qpair, atio, 5927 tc_sam_status); 5928 break; 5929 default: 5930 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5931 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 5932 vha->vp_idx); 5933 qlt_send_busy(rsp->qpair, atio, 5934 qla_sam_status); 5935 break; 5936 } 5937 } 5938 } 5939 break; 5940 5941 case CONTINUE_TGT_IO_TYPE: 5942 { 5943 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5944 qlt_do_ctio_completion(vha, rsp, entry->handle, 5945 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5946 entry); 5947 break; 5948 } 5949 5950 case CTIO_A64_TYPE: 5951 { 5952 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5953 qlt_do_ctio_completion(vha, rsp, entry->handle, 5954 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5955 entry); 5956 break; 5957 } 5958 5959 case IMMED_NOTIFY_TYPE: 5960 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5961 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5962 break; 5963 5964 case NOTIFY_ACK_TYPE: 5965 if (tgt->notify_ack_expected > 0) { 5966 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5967 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5968 "NOTIFY_ACK seq %08x status %x\n", 5969 le16_to_cpu(entry->u.isp2x.seq_id), 5970 le16_to_cpu(entry->u.isp2x.status)); 5971 tgt->notify_ack_expected--; 5972 if (entry->u.isp2x.status != 5973 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5974 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5975 "qla_target(%d): NOTIFY_ACK " 5976 "failed %x\n", vha->vp_idx, 5977 le16_to_cpu(entry->u.isp2x.status)); 5978 } 5979 } else { 5980 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5981 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5982 vha->vp_idx); 5983 } 5984 break; 5985 5986 case ABTS_RECV_24XX: 5987 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5988 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5989 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5990 break; 5991 5992 case ABTS_RESP_24XX: 5993 if (tgt->abts_resp_expected > 0) { 5994 qlt_handle_abts_completion(vha, rsp, pkt); 5995 } else { 5996 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5997 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5998 "received\n", vha->vp_idx); 5999 } 6000 break; 6001 6002 default: 6003 ql_dbg(ql_dbg_tgt, vha, 0xe065, 6004 "qla_target(%d): Received unknown response pkt " 6005 "type %x\n", vha->vp_idx, pkt->entry_type); 6006 break; 6007 } 6008 6009 } 6010 6011 /* 6012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6013 */ 6014 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 6015 uint16_t *mailbox) 6016 { 6017 struct qla_hw_data *ha = vha->hw; 6018 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6019 int login_code; 6020 6021 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 6022 return; 6023 6024 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 6025 IS_QLA2100(ha)) 6026 return; 6027 /* 6028 * In tgt_stop mode we also should allow all requests to pass. 6029 * Otherwise, some commands can stuck. 6030 */ 6031 6032 6033 switch (code) { 6034 case MBA_RESET: /* Reset */ 6035 case MBA_SYSTEM_ERR: /* System Error */ 6036 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 6037 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 6038 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 6039 "qla_target(%d): System error async event %#x " 6040 "occurred", vha->vp_idx, code); 6041 break; 6042 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 6043 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6044 break; 6045 6046 case MBA_LOOP_UP: 6047 { 6048 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 6049 "qla_target(%d): Async LOOP_UP occurred " 6050 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 6051 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6052 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6053 if (tgt->link_reinit_iocb_pending) { 6054 qlt_send_notify_ack(ha->base_qpair, 6055 (void *)&tgt->link_reinit_iocb, 6056 0, 0, 0, 0, 0, 0); 6057 tgt->link_reinit_iocb_pending = 0; 6058 } 6059 break; 6060 } 6061 6062 case MBA_LIP_OCCURRED: 6063 case MBA_LOOP_DOWN: 6064 case MBA_LIP_RESET: 6065 case MBA_RSCN_UPDATE: 6066 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 6067 "qla_target(%d): Async event %#x occurred " 6068 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6069 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6070 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6071 break; 6072 6073 case MBA_REJECTED_FCP_CMD: 6074 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 6075 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 6076 vha->vp_idx, 6077 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6078 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6079 6080 if (le16_to_cpu(mailbox[3]) == 1) { 6081 /* exchange starvation. */ 6082 vha->hw->exch_starvation++; 6083 if (vha->hw->exch_starvation > 5) { 6084 ql_log(ql_log_warn, vha, 0xd03a, 6085 "Exchange starvation-. Resetting RISC\n"); 6086 6087 vha->hw->exch_starvation = 0; 6088 if (IS_P3P_TYPE(vha->hw)) 6089 set_bit(FCOE_CTX_RESET_NEEDED, 6090 &vha->dpc_flags); 6091 else 6092 set_bit(ISP_ABORT_NEEDED, 6093 &vha->dpc_flags); 6094 qla2xxx_wake_dpc(vha); 6095 } 6096 } 6097 break; 6098 6099 case MBA_PORT_UPDATE: 6100 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 6101 "qla_target(%d): Port update async event %#x " 6102 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 6103 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 6104 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 6105 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 6106 6107 login_code = le16_to_cpu(mailbox[2]); 6108 if (login_code == 0x4) { 6109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 6110 "Async MB 2: Got PLOGI Complete\n"); 6111 vha->hw->exch_starvation = 0; 6112 } else if (login_code == 0x7) 6113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 6114 "Async MB 2: Port Logged Out\n"); 6115 break; 6116 default: 6117 break; 6118 } 6119 6120 } 6121 6122 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 6123 uint16_t loop_id) 6124 { 6125 fc_port_t *fcport, *tfcp, *del; 6126 int rc; 6127 unsigned long flags; 6128 u8 newfcport = 0; 6129 6130 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 6131 if (!fcport) { 6132 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 6133 "qla_target(%d): Allocation of tmp FC port failed", 6134 vha->vp_idx); 6135 return NULL; 6136 } 6137 6138 fcport->loop_id = loop_id; 6139 6140 rc = qla24xx_gpdb_wait(vha, fcport, 0); 6141 if (rc != QLA_SUCCESS) { 6142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 6143 "qla_target(%d): Failed to retrieve fcport " 6144 "information -- get_port_database() returned %x " 6145 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 6146 kfree(fcport); 6147 return NULL; 6148 } 6149 6150 del = NULL; 6151 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 6152 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 6153 6154 if (tfcp) { 6155 tfcp->d_id = fcport->d_id; 6156 tfcp->port_type = fcport->port_type; 6157 tfcp->supported_classes = fcport->supported_classes; 6158 tfcp->flags |= fcport->flags; 6159 tfcp->scan_state = QLA_FCPORT_FOUND; 6160 6161 del = fcport; 6162 fcport = tfcp; 6163 } else { 6164 if (vha->hw->current_topology == ISP_CFG_F) 6165 fcport->flags |= FCF_FABRIC_DEVICE; 6166 6167 list_add_tail(&fcport->list, &vha->vp_fcports); 6168 if (!IS_SW_RESV_ADDR(fcport->d_id)) 6169 vha->fcport_count++; 6170 fcport->login_gen++; 6171 fcport->disc_state = DSC_LOGIN_COMPLETE; 6172 fcport->login_succ = 1; 6173 newfcport = 1; 6174 } 6175 6176 fcport->deleted = 0; 6177 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 6178 6179 switch (vha->host->active_mode) { 6180 case MODE_INITIATOR: 6181 case MODE_DUAL: 6182 if (newfcport) { 6183 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 6184 qla24xx_sched_upd_fcport(fcport); 6185 } else { 6186 ql_dbg(ql_dbg_disc, vha, 0x20ff, 6187 "%s %d %8phC post gpsc fcp_cnt %d\n", 6188 __func__, __LINE__, fcport->port_name, vha->fcport_count); 6189 qla24xx_post_gpsc_work(vha, fcport); 6190 } 6191 } 6192 break; 6193 6194 case MODE_TARGET: 6195 default: 6196 break; 6197 } 6198 if (del) 6199 qla2x00_free_fcport(del); 6200 6201 return fcport; 6202 } 6203 6204 /* Must be called under tgt_mutex */ 6205 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 6206 uint8_t *s_id) 6207 { 6208 struct fc_port *sess = NULL; 6209 fc_port_t *fcport = NULL; 6210 int rc, global_resets; 6211 uint16_t loop_id = 0; 6212 6213 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 6214 /* 6215 * This is Domain Controller, so it should be 6216 * OK to drop SCSI commands from it. 6217 */ 6218 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 6219 "Unable to find initiator with S_ID %x:%x:%x", 6220 s_id[0], s_id[1], s_id[2]); 6221 return NULL; 6222 } 6223 6224 mutex_lock(&vha->vha_tgt.tgt_mutex); 6225 6226 retry: 6227 global_resets = 6228 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 6229 6230 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 6231 if (rc != 0) { 6232 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6233 6234 ql_log(ql_log_info, vha, 0xf071, 6235 "qla_target(%d): Unable to find " 6236 "initiator with S_ID %x:%x:%x", 6237 vha->vp_idx, s_id[0], s_id[1], 6238 s_id[2]); 6239 6240 if (rc == -ENOENT) { 6241 qlt_port_logo_t logo; 6242 sid_to_portid(s_id, &logo.id); 6243 logo.cmd_count = 1; 6244 qlt_send_first_logo(vha, &logo); 6245 } 6246 6247 return NULL; 6248 } 6249 6250 fcport = qlt_get_port_database(vha, loop_id); 6251 if (!fcport) { 6252 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6253 return NULL; 6254 } 6255 6256 if (global_resets != 6257 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 6258 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 6259 "qla_target(%d): global reset during session discovery " 6260 "(counter was %d, new %d), retrying", vha->vp_idx, 6261 global_resets, 6262 atomic_read(&vha->vha_tgt. 6263 qla_tgt->tgt_global_resets_count)); 6264 goto retry; 6265 } 6266 6267 sess = qlt_create_sess(vha, fcport, true); 6268 6269 mutex_unlock(&vha->vha_tgt.tgt_mutex); 6270 6271 return sess; 6272 } 6273 6274 static void qlt_abort_work(struct qla_tgt *tgt, 6275 struct qla_tgt_sess_work_param *prm) 6276 { 6277 struct scsi_qla_host *vha = tgt->vha; 6278 struct qla_hw_data *ha = vha->hw; 6279 struct fc_port *sess = NULL; 6280 unsigned long flags = 0, flags2 = 0; 6281 uint32_t be_s_id; 6282 uint8_t s_id[3]; 6283 int rc; 6284 6285 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6286 6287 if (tgt->tgt_stop) 6288 goto out_term2; 6289 6290 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 6291 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 6292 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 6293 6294 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 6295 (unsigned char *)&be_s_id); 6296 if (!sess) { 6297 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6298 6299 sess = qlt_make_local_sess(vha, s_id); 6300 /* sess has got an extra creation ref */ 6301 6302 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 6303 if (!sess) 6304 goto out_term2; 6305 } else { 6306 if (sess->deleted) { 6307 sess = NULL; 6308 goto out_term2; 6309 } 6310 6311 if (!kref_get_unless_zero(&sess->sess_kref)) { 6312 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 6313 "%s: kref_get fail %8phC \n", 6314 __func__, sess->port_name); 6315 sess = NULL; 6316 goto out_term2; 6317 } 6318 } 6319 6320 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 6321 ha->tgt.tgt_ops->put_sess(sess); 6322 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6323 6324 if (rc != 0) 6325 goto out_term; 6326 return; 6327 6328 out_term2: 6329 if (sess) 6330 ha->tgt.tgt_ops->put_sess(sess); 6331 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 6332 6333 out_term: 6334 spin_lock_irqsave(&ha->hardware_lock, flags); 6335 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 6336 FCP_TMF_REJECTED, false); 6337 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6338 } 6339 6340 static void qlt_tmr_work(struct qla_tgt *tgt, 6341 struct qla_tgt_sess_work_param *prm) 6342 { 6343 struct atio_from_isp *a = &prm->tm_iocb2; 6344 struct scsi_qla_host *vha = tgt->vha; 6345 struct qla_hw_data *ha = vha->hw; 6346 struct fc_port *sess = NULL; 6347 unsigned long flags; 6348 uint8_t *s_id = NULL; /* to hide compiler warnings */ 6349 int rc; 6350 u64 unpacked_lun; 6351 int fn; 6352 void *iocb; 6353 6354 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6355 6356 if (tgt->tgt_stop) 6357 goto out_term2; 6358 6359 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 6360 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 6361 if (!sess) { 6362 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6363 6364 sess = qlt_make_local_sess(vha, s_id); 6365 /* sess has got an extra creation ref */ 6366 6367 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6368 if (!sess) 6369 goto out_term2; 6370 } else { 6371 if (sess->deleted) { 6372 sess = NULL; 6373 goto out_term2; 6374 } 6375 6376 if (!kref_get_unless_zero(&sess->sess_kref)) { 6377 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 6378 "%s: kref_get fail %8phC\n", 6379 __func__, sess->port_name); 6380 sess = NULL; 6381 goto out_term2; 6382 } 6383 } 6384 6385 iocb = a; 6386 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6387 unpacked_lun = 6388 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6389 6390 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6391 ha->tgt.tgt_ops->put_sess(sess); 6392 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6393 6394 if (rc != 0) 6395 goto out_term; 6396 return; 6397 6398 out_term2: 6399 if (sess) 6400 ha->tgt.tgt_ops->put_sess(sess); 6401 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6402 out_term: 6403 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6404 } 6405 6406 static void qlt_sess_work_fn(struct work_struct *work) 6407 { 6408 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6409 struct scsi_qla_host *vha = tgt->vha; 6410 unsigned long flags; 6411 6412 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6413 6414 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6415 while (!list_empty(&tgt->sess_works_list)) { 6416 struct qla_tgt_sess_work_param *prm = list_entry( 6417 tgt->sess_works_list.next, typeof(*prm), 6418 sess_works_list_entry); 6419 6420 /* 6421 * This work can be scheduled on several CPUs at time, so we 6422 * must delete the entry to eliminate double processing 6423 */ 6424 list_del(&prm->sess_works_list_entry); 6425 6426 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6427 6428 switch (prm->type) { 6429 case QLA_TGT_SESS_WORK_ABORT: 6430 qlt_abort_work(tgt, prm); 6431 break; 6432 case QLA_TGT_SESS_WORK_TM: 6433 qlt_tmr_work(tgt, prm); 6434 break; 6435 default: 6436 BUG_ON(1); 6437 break; 6438 } 6439 6440 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6441 6442 kfree(prm); 6443 } 6444 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6445 } 6446 6447 /* Must be called under tgt_host_action_mutex */ 6448 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6449 { 6450 struct qla_tgt *tgt; 6451 int rc, i; 6452 struct qla_qpair_hint *h; 6453 6454 if (!QLA_TGT_MODE_ENABLED()) 6455 return 0; 6456 6457 if (!IS_TGT_MODE_CAPABLE(ha)) { 6458 ql_log(ql_log_warn, base_vha, 0xe070, 6459 "This adapter does not support target mode.\n"); 6460 return 0; 6461 } 6462 6463 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6464 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6465 6466 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6467 6468 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6469 if (!tgt) { 6470 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6471 "Unable to allocate struct qla_tgt\n"); 6472 return -ENOMEM; 6473 } 6474 6475 tgt->qphints = kcalloc(ha->max_qpairs + 1, 6476 sizeof(struct qla_qpair_hint), 6477 GFP_KERNEL); 6478 if (!tgt->qphints) { 6479 kfree(tgt); 6480 ql_log(ql_log_warn, base_vha, 0x0197, 6481 "Unable to allocate qpair hints.\n"); 6482 return -ENOMEM; 6483 } 6484 6485 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6486 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6487 6488 rc = btree_init64(&tgt->lun_qpair_map); 6489 if (rc) { 6490 kfree(tgt->qphints); 6491 kfree(tgt); 6492 ql_log(ql_log_info, base_vha, 0x0198, 6493 "Unable to initialize lun_qpair_map btree\n"); 6494 return -EIO; 6495 } 6496 h = &tgt->qphints[0]; 6497 h->qpair = ha->base_qpair; 6498 INIT_LIST_HEAD(&h->hint_elem); 6499 h->cpuid = ha->base_qpair->cpuid; 6500 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6501 6502 for (i = 0; i < ha->max_qpairs; i++) { 6503 unsigned long flags; 6504 6505 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6506 h = &tgt->qphints[i + 1]; 6507 INIT_LIST_HEAD(&h->hint_elem); 6508 if (qpair) { 6509 h->qpair = qpair; 6510 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6511 list_add_tail(&h->hint_elem, &qpair->hints_list); 6512 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6513 h->cpuid = qpair->cpuid; 6514 } 6515 } 6516 6517 tgt->ha = ha; 6518 tgt->vha = base_vha; 6519 init_waitqueue_head(&tgt->waitQ); 6520 INIT_LIST_HEAD(&tgt->del_sess_list); 6521 spin_lock_init(&tgt->sess_work_lock); 6522 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6523 INIT_LIST_HEAD(&tgt->sess_works_list); 6524 atomic_set(&tgt->tgt_global_resets_count, 0); 6525 6526 base_vha->vha_tgt.qla_tgt = tgt; 6527 6528 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6529 "qla_target(%d): using 64 Bit PCI addressing", 6530 base_vha->vp_idx); 6531 /* 3 is reserved */ 6532 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6533 6534 mutex_lock(&qla_tgt_mutex); 6535 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6536 mutex_unlock(&qla_tgt_mutex); 6537 6538 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6539 ha->tgt.tgt_ops->add_target(base_vha); 6540 6541 return 0; 6542 } 6543 6544 /* Must be called under tgt_host_action_mutex */ 6545 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6546 { 6547 if (!vha->vha_tgt.qla_tgt) 6548 return 0; 6549 6550 if (vha->fc_vport) { 6551 qlt_release(vha->vha_tgt.qla_tgt); 6552 return 0; 6553 } 6554 6555 /* free left over qfull cmds */ 6556 qlt_init_term_exchange(vha); 6557 6558 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6559 vha->host_no, ha); 6560 qlt_release(vha->vha_tgt.qla_tgt); 6561 6562 return 0; 6563 } 6564 6565 void qlt_remove_target_resources(struct qla_hw_data *ha) 6566 { 6567 struct scsi_qla_host *node; 6568 u32 key = 0; 6569 6570 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6571 btree_remove32(&ha->tgt.host_map, key); 6572 6573 btree_destroy32(&ha->tgt.host_map); 6574 } 6575 6576 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6577 unsigned char *b) 6578 { 6579 int i; 6580 6581 pr_debug("qla2xxx HW vha->node_name: "); 6582 for (i = 0; i < WWN_SIZE; i++) 6583 pr_debug("%02x ", vha->node_name[i]); 6584 pr_debug("\n"); 6585 pr_debug("qla2xxx HW vha->port_name: "); 6586 for (i = 0; i < WWN_SIZE; i++) 6587 pr_debug("%02x ", vha->port_name[i]); 6588 pr_debug("\n"); 6589 6590 pr_debug("qla2xxx passed configfs WWPN: "); 6591 put_unaligned_be64(wwpn, b); 6592 for (i = 0; i < WWN_SIZE; i++) 6593 pr_debug("%02x ", b[i]); 6594 pr_debug("\n"); 6595 } 6596 6597 /** 6598 * qla_tgt_lport_register - register lport with external module 6599 * 6600 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6601 * @phys_wwpn: physical port WWPN 6602 * @npiv_wwpn: NPIV WWPN 6603 * @npiv_wwnn: NPIV WWNN 6604 * @callback: lport initialization callback for tcm_qla2xxx code 6605 */ 6606 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6607 u64 npiv_wwpn, u64 npiv_wwnn, 6608 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6609 { 6610 struct qla_tgt *tgt; 6611 struct scsi_qla_host *vha; 6612 struct qla_hw_data *ha; 6613 struct Scsi_Host *host; 6614 unsigned long flags; 6615 int rc; 6616 u8 b[WWN_SIZE]; 6617 6618 mutex_lock(&qla_tgt_mutex); 6619 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6620 vha = tgt->vha; 6621 ha = vha->hw; 6622 6623 host = vha->host; 6624 if (!host) 6625 continue; 6626 6627 if (!(host->hostt->supported_mode & MODE_TARGET)) 6628 continue; 6629 6630 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6631 continue; 6632 6633 spin_lock_irqsave(&ha->hardware_lock, flags); 6634 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6635 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6636 host->host_no); 6637 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6638 continue; 6639 } 6640 if (tgt->tgt_stop) { 6641 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6642 host->host_no); 6643 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6644 continue; 6645 } 6646 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6647 6648 if (!scsi_host_get(host)) { 6649 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6650 "Unable to scsi_host_get() for" 6651 " qla2xxx scsi_host\n"); 6652 continue; 6653 } 6654 qlt_lport_dump(vha, phys_wwpn, b); 6655 6656 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6657 scsi_host_put(host); 6658 continue; 6659 } 6660 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6661 if (rc != 0) 6662 scsi_host_put(host); 6663 6664 mutex_unlock(&qla_tgt_mutex); 6665 return rc; 6666 } 6667 mutex_unlock(&qla_tgt_mutex); 6668 6669 return -ENODEV; 6670 } 6671 EXPORT_SYMBOL(qlt_lport_register); 6672 6673 /** 6674 * qla_tgt_lport_deregister - Degister lport 6675 * 6676 * @vha: Registered scsi_qla_host pointer 6677 */ 6678 void qlt_lport_deregister(struct scsi_qla_host *vha) 6679 { 6680 struct qla_hw_data *ha = vha->hw; 6681 struct Scsi_Host *sh = vha->host; 6682 /* 6683 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6684 */ 6685 vha->vha_tgt.target_lport_ptr = NULL; 6686 ha->tgt.tgt_ops = NULL; 6687 /* 6688 * Release the Scsi_Host reference for the underlying qla2xxx host 6689 */ 6690 scsi_host_put(sh); 6691 } 6692 EXPORT_SYMBOL(qlt_lport_deregister); 6693 6694 /* Must be called under HW lock */ 6695 void qlt_set_mode(struct scsi_qla_host *vha) 6696 { 6697 switch (vha->qlini_mode) { 6698 case QLA2XXX_INI_MODE_DISABLED: 6699 case QLA2XXX_INI_MODE_EXCLUSIVE: 6700 vha->host->active_mode = MODE_TARGET; 6701 break; 6702 case QLA2XXX_INI_MODE_ENABLED: 6703 vha->host->active_mode = MODE_INITIATOR; 6704 break; 6705 case QLA2XXX_INI_MODE_DUAL: 6706 vha->host->active_mode = MODE_DUAL; 6707 break; 6708 default: 6709 break; 6710 } 6711 } 6712 6713 /* Must be called under HW lock */ 6714 static void qlt_clear_mode(struct scsi_qla_host *vha) 6715 { 6716 switch (vha->qlini_mode) { 6717 case QLA2XXX_INI_MODE_DISABLED: 6718 vha->host->active_mode = MODE_UNKNOWN; 6719 break; 6720 case QLA2XXX_INI_MODE_EXCLUSIVE: 6721 vha->host->active_mode = MODE_INITIATOR; 6722 break; 6723 case QLA2XXX_INI_MODE_ENABLED: 6724 case QLA2XXX_INI_MODE_DUAL: 6725 vha->host->active_mode = MODE_INITIATOR; 6726 break; 6727 default: 6728 break; 6729 } 6730 } 6731 6732 /* 6733 * qla_tgt_enable_vha - NO LOCK HELD 6734 * 6735 * host_reset, bring up w/ Target Mode Enabled 6736 */ 6737 void 6738 qlt_enable_vha(struct scsi_qla_host *vha) 6739 { 6740 struct qla_hw_data *ha = vha->hw; 6741 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6742 unsigned long flags; 6743 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6744 6745 if (!tgt) { 6746 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6747 "Unable to locate qla_tgt pointer from" 6748 " struct qla_hw_data\n"); 6749 dump_stack(); 6750 return; 6751 } 6752 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 6753 return; 6754 6755 spin_lock_irqsave(&ha->hardware_lock, flags); 6756 tgt->tgt_stopped = 0; 6757 qlt_set_mode(vha); 6758 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6759 6760 mutex_lock(&ha->optrom_mutex); 6761 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 6762 "%s.\n", __func__); 6763 if (vha->vp_idx) { 6764 qla24xx_disable_vp(vha); 6765 qla24xx_enable_vp(vha); 6766 } else { 6767 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6768 qla2xxx_wake_dpc(base_vha); 6769 qla2x00_wait_for_hba_online(base_vha); 6770 } 6771 mutex_unlock(&ha->optrom_mutex); 6772 } 6773 EXPORT_SYMBOL(qlt_enable_vha); 6774 6775 /* 6776 * qla_tgt_disable_vha - NO LOCK HELD 6777 * 6778 * Disable Target Mode and reset the adapter 6779 */ 6780 static void qlt_disable_vha(struct scsi_qla_host *vha) 6781 { 6782 struct qla_hw_data *ha = vha->hw; 6783 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6784 unsigned long flags; 6785 6786 if (!tgt) { 6787 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6788 "Unable to locate qla_tgt pointer from" 6789 " struct qla_hw_data\n"); 6790 dump_stack(); 6791 return; 6792 } 6793 6794 spin_lock_irqsave(&ha->hardware_lock, flags); 6795 qlt_clear_mode(vha); 6796 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6797 6798 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6799 qla2xxx_wake_dpc(vha); 6800 qla2x00_wait_for_hba_online(vha); 6801 } 6802 6803 /* 6804 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6805 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6806 * members. 6807 */ 6808 void 6809 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6810 { 6811 vha->vha_tgt.qla_tgt = NULL; 6812 6813 mutex_init(&vha->vha_tgt.tgt_mutex); 6814 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6815 6816 qlt_clear_mode(vha); 6817 6818 /* 6819 * NOTE: Currently the value is kept the same for <24xx and 6820 * >=24xx ISPs. If it is necessary to change it, 6821 * the check should be added for specific ISPs, 6822 * assigning the value appropriately. 6823 */ 6824 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6825 6826 qlt_add_target(ha, vha); 6827 } 6828 6829 u8 6830 qlt_rff_id(struct scsi_qla_host *vha) 6831 { 6832 u8 fc4_feature = 0; 6833 /* 6834 * FC-4 Feature bit 0 indicates target functionality to the name server. 6835 */ 6836 if (qla_tgt_mode_enabled(vha)) { 6837 fc4_feature = BIT_0; 6838 } else if (qla_ini_mode_enabled(vha)) { 6839 fc4_feature = BIT_1; 6840 } else if (qla_dual_mode_enabled(vha)) 6841 fc4_feature = BIT_0 | BIT_1; 6842 6843 return fc4_feature; 6844 } 6845 6846 /* 6847 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6848 * @ha: HA context 6849 * 6850 * Beginning of ATIO ring has initialization control block already built 6851 * by nvram config routine. 6852 * 6853 * Returns 0 on success. 6854 */ 6855 void 6856 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6857 { 6858 struct qla_hw_data *ha = vha->hw; 6859 uint16_t cnt; 6860 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6861 6862 if (qla_ini_mode_enabled(vha)) 6863 return; 6864 6865 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6866 pkt->u.raw.signature = ATIO_PROCESSED; 6867 pkt++; 6868 } 6869 6870 } 6871 6872 /* 6873 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6874 * @ha: SCSI driver HA context 6875 */ 6876 void 6877 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6878 { 6879 struct qla_hw_data *ha = vha->hw; 6880 struct atio_from_isp *pkt; 6881 int cnt, i; 6882 6883 if (!ha->flags.fw_started) 6884 return; 6885 6886 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6887 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6888 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6889 cnt = pkt->u.raw.entry_count; 6890 6891 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6892 /* 6893 * This packet is corrupted. The header + payload 6894 * can not be trusted. There is no point in passing 6895 * it further up. 6896 */ 6897 ql_log(ql_log_warn, vha, 0xd03c, 6898 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6899 pkt->u.isp24.fcp_hdr.s_id, 6900 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6901 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6902 6903 adjust_corrupted_atio(pkt); 6904 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6905 ha_locked, 0); 6906 } else { 6907 qlt_24xx_atio_pkt_all_vps(vha, 6908 (struct atio_from_isp *)pkt, ha_locked); 6909 } 6910 6911 for (i = 0; i < cnt; i++) { 6912 ha->tgt.atio_ring_index++; 6913 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6914 ha->tgt.atio_ring_index = 0; 6915 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6916 } else 6917 ha->tgt.atio_ring_ptr++; 6918 6919 pkt->u.raw.signature = ATIO_PROCESSED; 6920 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6921 } 6922 wmb(); 6923 } 6924 6925 /* Adjust ring index */ 6926 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6927 } 6928 6929 void 6930 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6931 { 6932 struct qla_hw_data *ha = vha->hw; 6933 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6934 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6935 6936 if (!QLA_TGT_MODE_ENABLED()) 6937 return; 6938 6939 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6940 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6941 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6942 6943 if (ha->flags.msix_enabled) { 6944 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6945 if (IS_QLA2071(ha)) { 6946 /* 4 ports Baker: Enable Interrupt Handshake */ 6947 icb->msix_atio = 0; 6948 icb->firmware_options_2 |= BIT_26; 6949 } else { 6950 icb->msix_atio = cpu_to_le16(msix->entry); 6951 icb->firmware_options_2 &= ~BIT_26; 6952 } 6953 ql_dbg(ql_dbg_init, vha, 0xf072, 6954 "Registering ICB vector 0x%x for atio que.\n", 6955 msix->entry); 6956 } 6957 } else { 6958 /* INTx|MSI */ 6959 if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6960 icb->msix_atio = 0; 6961 icb->firmware_options_2 |= BIT_26; 6962 ql_dbg(ql_dbg_init, vha, 0xf072, 6963 "%s: Use INTx for ATIOQ.\n", __func__); 6964 } 6965 } 6966 } 6967 6968 void 6969 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6970 { 6971 struct qla_hw_data *ha = vha->hw; 6972 u32 tmp; 6973 6974 if (!QLA_TGT_MODE_ENABLED()) 6975 return; 6976 6977 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6978 if (!ha->tgt.saved_set) { 6979 /* We save only once */ 6980 ha->tgt.saved_exchange_count = nv->exchange_count; 6981 ha->tgt.saved_firmware_options_1 = 6982 nv->firmware_options_1; 6983 ha->tgt.saved_firmware_options_2 = 6984 nv->firmware_options_2; 6985 ha->tgt.saved_firmware_options_3 = 6986 nv->firmware_options_3; 6987 ha->tgt.saved_set = 1; 6988 } 6989 6990 if (qla_tgt_mode_enabled(vha)) 6991 nv->exchange_count = cpu_to_le16(0xFFFF); 6992 else /* dual */ 6993 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 6994 6995 /* Enable target mode */ 6996 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6997 6998 /* Disable ini mode, if requested */ 6999 if (qla_tgt_mode_enabled(vha)) 7000 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7001 7002 /* Disable Full Login after LIP */ 7003 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7004 /* Enable initial LIP */ 7005 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7006 if (ql2xtgt_tape_enable) 7007 /* Enable FC Tape support */ 7008 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7009 else 7010 /* Disable FC Tape support */ 7011 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7012 7013 /* Disable Full Login after LIP */ 7014 nv->host_p &= cpu_to_le32(~BIT_10); 7015 7016 /* 7017 * clear BIT 15 explicitly as we have seen at least 7018 * a couple of instances where this was set and this 7019 * was causing the firmware to not be initialized. 7020 */ 7021 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7022 /* Enable target PRLI control */ 7023 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7024 7025 if (IS_QLA25XX(ha)) { 7026 /* Change Loop-prefer to Pt-Pt */ 7027 tmp = ~(BIT_4|BIT_5|BIT_6); 7028 nv->firmware_options_2 &= cpu_to_le32(tmp); 7029 tmp = P2P << 4; 7030 nv->firmware_options_2 |= cpu_to_le32(tmp); 7031 } 7032 } else { 7033 if (ha->tgt.saved_set) { 7034 nv->exchange_count = ha->tgt.saved_exchange_count; 7035 nv->firmware_options_1 = 7036 ha->tgt.saved_firmware_options_1; 7037 nv->firmware_options_2 = 7038 ha->tgt.saved_firmware_options_2; 7039 nv->firmware_options_3 = 7040 ha->tgt.saved_firmware_options_3; 7041 } 7042 return; 7043 } 7044 7045 if (ha->base_qpair->enable_class_2) { 7046 if (vha->flags.init_done) 7047 fc_host_supported_classes(vha->host) = 7048 FC_COS_CLASS2 | FC_COS_CLASS3; 7049 7050 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7051 } else { 7052 if (vha->flags.init_done) 7053 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7054 7055 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7056 } 7057 } 7058 7059 void 7060 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 7061 struct init_cb_24xx *icb) 7062 { 7063 struct qla_hw_data *ha = vha->hw; 7064 7065 if (!QLA_TGT_MODE_ENABLED()) 7066 return; 7067 7068 if (ha->tgt.node_name_set) { 7069 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7070 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7071 } 7072 } 7073 7074 void 7075 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 7076 { 7077 struct qla_hw_data *ha = vha->hw; 7078 u32 tmp; 7079 7080 if (!QLA_TGT_MODE_ENABLED()) 7081 return; 7082 7083 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7084 if (!ha->tgt.saved_set) { 7085 /* We save only once */ 7086 ha->tgt.saved_exchange_count = nv->exchange_count; 7087 ha->tgt.saved_firmware_options_1 = 7088 nv->firmware_options_1; 7089 ha->tgt.saved_firmware_options_2 = 7090 nv->firmware_options_2; 7091 ha->tgt.saved_firmware_options_3 = 7092 nv->firmware_options_3; 7093 ha->tgt.saved_set = 1; 7094 } 7095 7096 if (qla_tgt_mode_enabled(vha)) 7097 nv->exchange_count = cpu_to_le16(0xFFFF); 7098 else /* dual */ 7099 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7100 7101 /* Enable target mode */ 7102 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7103 7104 /* Disable ini mode, if requested */ 7105 if (qla_tgt_mode_enabled(vha)) 7106 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7107 /* Disable Full Login after LIP */ 7108 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7109 /* Enable initial LIP */ 7110 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7111 /* 7112 * clear BIT 15 explicitly as we have seen at 7113 * least a couple of instances where this was set 7114 * and this was causing the firmware to not be 7115 * initialized. 7116 */ 7117 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 7118 if (ql2xtgt_tape_enable) 7119 /* Enable FC tape support */ 7120 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7121 else 7122 /* Disable FC tape support */ 7123 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 7124 7125 /* Disable Full Login after LIP */ 7126 nv->host_p &= cpu_to_le32(~BIT_10); 7127 /* Enable target PRLI control */ 7128 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 7129 7130 /* Change Loop-prefer to Pt-Pt */ 7131 tmp = ~(BIT_4|BIT_5|BIT_6); 7132 nv->firmware_options_2 &= cpu_to_le32(tmp); 7133 tmp = P2P << 4; 7134 nv->firmware_options_2 |= cpu_to_le32(tmp); 7135 } else { 7136 if (ha->tgt.saved_set) { 7137 nv->exchange_count = ha->tgt.saved_exchange_count; 7138 nv->firmware_options_1 = 7139 ha->tgt.saved_firmware_options_1; 7140 nv->firmware_options_2 = 7141 ha->tgt.saved_firmware_options_2; 7142 nv->firmware_options_3 = 7143 ha->tgt.saved_firmware_options_3; 7144 } 7145 return; 7146 } 7147 7148 if (ha->base_qpair->enable_class_2) { 7149 if (vha->flags.init_done) 7150 fc_host_supported_classes(vha->host) = 7151 FC_COS_CLASS2 | FC_COS_CLASS3; 7152 7153 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 7154 } else { 7155 if (vha->flags.init_done) 7156 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 7157 7158 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 7159 } 7160 } 7161 7162 void 7163 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 7164 struct init_cb_81xx *icb) 7165 { 7166 struct qla_hw_data *ha = vha->hw; 7167 7168 if (!QLA_TGT_MODE_ENABLED()) 7169 return; 7170 7171 if (ha->tgt.node_name_set) { 7172 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 7173 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 7174 } 7175 } 7176 7177 void 7178 qlt_83xx_iospace_config(struct qla_hw_data *ha) 7179 { 7180 if (!QLA_TGT_MODE_ENABLED()) 7181 return; 7182 7183 ha->msix_count += 1; /* For ATIO Q */ 7184 } 7185 7186 7187 void 7188 qlt_modify_vp_config(struct scsi_qla_host *vha, 7189 struct vp_config_entry_24xx *vpmod) 7190 { 7191 /* enable target mode. Bit5 = 1 => disable */ 7192 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 7193 vpmod->options_idx1 &= ~BIT_5; 7194 7195 /* Disable ini mode, if requested. bit4 = 1 => disable */ 7196 if (qla_tgt_mode_enabled(vha)) 7197 vpmod->options_idx1 &= ~BIT_4; 7198 } 7199 7200 void 7201 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 7202 { 7203 int rc; 7204 7205 if (!QLA_TGT_MODE_ENABLED()) 7206 return; 7207 7208 if ((ql2xenablemsix == 0) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 7209 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 7210 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 7211 } else { 7212 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 7213 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 7214 } 7215 7216 mutex_init(&base_vha->vha_tgt.tgt_mutex); 7217 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 7218 7219 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 7220 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 7221 qlt_unknown_atio_work_fn); 7222 7223 qlt_clear_mode(base_vha); 7224 7225 rc = btree_init32(&ha->tgt.host_map); 7226 if (rc) 7227 ql_log(ql_log_info, base_vha, 0xd03d, 7228 "Unable to initialize ha->host_map btree\n"); 7229 7230 qlt_update_vp_map(base_vha, SET_VP_IDX); 7231 } 7232 7233 irqreturn_t 7234 qla83xx_msix_atio_q(int irq, void *dev_id) 7235 { 7236 struct rsp_que *rsp; 7237 scsi_qla_host_t *vha; 7238 struct qla_hw_data *ha; 7239 unsigned long flags; 7240 7241 rsp = (struct rsp_que *) dev_id; 7242 ha = rsp->hw; 7243 vha = pci_get_drvdata(ha->pdev); 7244 7245 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7246 7247 qlt_24xx_process_atio_queue(vha, 0); 7248 7249 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7250 7251 return IRQ_HANDLED; 7252 } 7253 7254 static void 7255 qlt_handle_abts_recv_work(struct work_struct *work) 7256 { 7257 struct qla_tgt_sess_op *op = container_of(work, 7258 struct qla_tgt_sess_op, work); 7259 scsi_qla_host_t *vha = op->vha; 7260 struct qla_hw_data *ha = vha->hw; 7261 unsigned long flags; 7262 7263 if (qla2x00_reset_active(vha) || 7264 (op->chip_reset != ha->base_qpair->chip_reset)) 7265 return; 7266 7267 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 7268 qlt_24xx_process_atio_queue(vha, 0); 7269 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 7270 7271 spin_lock_irqsave(&ha->hardware_lock, flags); 7272 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 7273 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7274 7275 kfree(op); 7276 } 7277 7278 void 7279 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 7280 response_t *pkt) 7281 { 7282 struct qla_tgt_sess_op *op; 7283 7284 op = kzalloc(sizeof(*op), GFP_ATOMIC); 7285 7286 if (!op) { 7287 /* do not reach for ATIO queue here. This is best effort err 7288 * recovery at this point. 7289 */ 7290 qlt_response_pkt_all_vps(vha, rsp, pkt); 7291 return; 7292 } 7293 7294 memcpy(&op->atio, pkt, sizeof(*pkt)); 7295 op->vha = vha; 7296 op->chip_reset = vha->hw->base_qpair->chip_reset; 7297 op->rsp = rsp; 7298 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 7299 queue_work(qla_tgt_wq, &op->work); 7300 return; 7301 } 7302 7303 int 7304 qlt_mem_alloc(struct qla_hw_data *ha) 7305 { 7306 if (!QLA_TGT_MODE_ENABLED()) 7307 return 0; 7308 7309 ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, 7310 sizeof(struct qla_tgt_vp_map), 7311 GFP_KERNEL); 7312 if (!ha->tgt.tgt_vp_map) 7313 return -ENOMEM; 7314 7315 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 7316 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 7317 &ha->tgt.atio_dma, GFP_KERNEL); 7318 if (!ha->tgt.atio_ring) { 7319 kfree(ha->tgt.tgt_vp_map); 7320 return -ENOMEM; 7321 } 7322 return 0; 7323 } 7324 7325 void 7326 qlt_mem_free(struct qla_hw_data *ha) 7327 { 7328 if (!QLA_TGT_MODE_ENABLED()) 7329 return; 7330 7331 if (ha->tgt.atio_ring) { 7332 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 7333 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 7334 ha->tgt.atio_dma); 7335 } 7336 kfree(ha->tgt.tgt_vp_map); 7337 } 7338 7339 /* vport_slock to be held by the caller */ 7340 void 7341 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 7342 { 7343 void *slot; 7344 u32 key; 7345 int rc; 7346 7347 if (!QLA_TGT_MODE_ENABLED()) 7348 return; 7349 7350 key = vha->d_id.b24; 7351 7352 switch (cmd) { 7353 case SET_VP_IDX: 7354 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 7355 break; 7356 case SET_AL_PA: 7357 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7358 if (!slot) { 7359 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 7360 "Save vha in host_map %p %06x\n", vha, key); 7361 rc = btree_insert32(&vha->hw->tgt.host_map, 7362 key, vha, GFP_ATOMIC); 7363 if (rc) 7364 ql_log(ql_log_info, vha, 0xd03e, 7365 "Unable to insert s_id into host_map: %06x\n", 7366 key); 7367 return; 7368 } 7369 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 7370 "replace existing vha in host_map %p %06x\n", vha, key); 7371 btree_update32(&vha->hw->tgt.host_map, key, vha); 7372 break; 7373 case RESET_VP_IDX: 7374 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 7375 break; 7376 case RESET_AL_PA: 7377 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 7378 "clear vha in host_map %p %06x\n", vha, key); 7379 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 7380 if (slot) 7381 btree_remove32(&vha->hw->tgt.host_map, key); 7382 vha->d_id.b24 = 0; 7383 break; 7384 } 7385 } 7386 7387 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 7388 { 7389 7390 if (!vha->d_id.b24) { 7391 vha->d_id = id; 7392 qlt_update_vp_map(vha, SET_AL_PA); 7393 } else if (vha->d_id.b24 != id.b24) { 7394 qlt_update_vp_map(vha, RESET_AL_PA); 7395 vha->d_id = id; 7396 qlt_update_vp_map(vha, SET_AL_PA); 7397 } 7398 } 7399 7400 static int __init qlt_parse_ini_mode(void) 7401 { 7402 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 7403 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7404 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7405 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7406 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7407 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7408 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7409 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7410 else 7411 return false; 7412 7413 return true; 7414 } 7415 7416 int __init qlt_init(void) 7417 { 7418 int ret; 7419 7420 if (!qlt_parse_ini_mode()) { 7421 ql_log(ql_log_fatal, NULL, 0xe06b, 7422 "qlt_parse_ini_mode() failed\n"); 7423 return -EINVAL; 7424 } 7425 7426 if (!QLA_TGT_MODE_ENABLED()) 7427 return 0; 7428 7429 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7430 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7431 qla_tgt_mgmt_cmd), 0, NULL); 7432 if (!qla_tgt_mgmt_cmd_cachep) { 7433 ql_log(ql_log_fatal, NULL, 0xd04b, 7434 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7435 return -ENOMEM; 7436 } 7437 7438 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7439 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7440 0, NULL); 7441 7442 if (!qla_tgt_plogi_cachep) { 7443 ql_log(ql_log_fatal, NULL, 0xe06d, 7444 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7445 ret = -ENOMEM; 7446 goto out_mgmt_cmd_cachep; 7447 } 7448 7449 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7450 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7451 if (!qla_tgt_mgmt_cmd_mempool) { 7452 ql_log(ql_log_fatal, NULL, 0xe06e, 7453 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7454 ret = -ENOMEM; 7455 goto out_plogi_cachep; 7456 } 7457 7458 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7459 if (!qla_tgt_wq) { 7460 ql_log(ql_log_fatal, NULL, 0xe06f, 7461 "alloc_workqueue for qla_tgt_wq failed\n"); 7462 ret = -ENOMEM; 7463 goto out_cmd_mempool; 7464 } 7465 /* 7466 * Return 1 to signal that initiator-mode is being disabled 7467 */ 7468 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7469 7470 out_cmd_mempool: 7471 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7472 out_plogi_cachep: 7473 kmem_cache_destroy(qla_tgt_plogi_cachep); 7474 out_mgmt_cmd_cachep: 7475 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7476 return ret; 7477 } 7478 7479 void qlt_exit(void) 7480 { 7481 if (!QLA_TGT_MODE_ENABLED()) 7482 return; 7483 7484 destroy_workqueue(qla_tgt_wq); 7485 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7486 kmem_cache_destroy(qla_tgt_plogi_cachep); 7487 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7488 } 7489