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 temp_sam_status = SAM_STAT_BUSY; 79 80 /* 81 * From scsi/fc/fc_fcp.h 82 */ 83 enum fcp_resp_rsp_codes { 84 FCP_TMF_CMPL = 0, 85 FCP_DATA_LEN_INVALID = 1, 86 FCP_CMND_FIELDS_INVALID = 2, 87 FCP_DATA_PARAM_MISMATCH = 3, 88 FCP_TMF_REJECTED = 4, 89 FCP_TMF_FAILED = 5, 90 FCP_TMF_INVALID_LUN = 9, 91 }; 92 93 /* 94 * fc_pri_ta from scsi/fc/fc_fcp.h 95 */ 96 #define FCP_PTA_SIMPLE 0 /* simple task attribute */ 97 #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 98 #define FCP_PTA_ORDERED 2 /* ordered task attribute */ 99 #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 100 #define FCP_PTA_MASK 7 /* mask for task attribute field */ 101 #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 102 #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 103 104 /* 105 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 106 * must be called under HW lock and could unlock/lock it inside. 107 * It isn't an issue, since in the current implementation on the time when 108 * those functions are called: 109 * 110 * - Either context is IRQ and only IRQ handler can modify HW data, 111 * including rings related fields, 112 * 113 * - Or access to target mode variables from struct qla_tgt doesn't 114 * cross those functions boundaries, except tgt_stop, which 115 * additionally protected by irq_cmd_count. 116 */ 117 /* Predefs for callbacks handed to qla2xxx LLD */ 118 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 119 struct atio_from_isp *pkt, uint8_t); 120 static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 121 response_t *pkt); 122 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 123 int fn, void *iocb, int flags); 124 static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd 125 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 126 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 127 struct atio_from_isp *atio, uint16_t status, int qfull); 128 static void qlt_disable_vha(struct scsi_qla_host *vha); 129 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 130 static void qlt_send_notify_ack(struct qla_qpair *qpair, 131 struct imm_ntfy_from_isp *ntfy, 132 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 133 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 134 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 135 struct imm_ntfy_from_isp *imm, int ha_locked); 136 static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 137 fc_port_t *fcport, bool local); 138 void qlt_unreg_sess(struct fc_port *sess); 139 static void qlt_24xx_handle_abts(struct scsi_qla_host *, 140 struct abts_recv_from_24xx *); 141 static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 142 uint16_t); 143 144 /* 145 * Global Variables 146 */ 147 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 148 static struct kmem_cache *qla_tgt_plogi_cachep; 149 static mempool_t *qla_tgt_mgmt_cmd_mempool; 150 static struct workqueue_struct *qla_tgt_wq; 151 static DEFINE_MUTEX(qla_tgt_mutex); 152 static LIST_HEAD(qla_tgt_glist); 153 154 static const char *prot_op_str(u32 prot_op) 155 { 156 switch (prot_op) { 157 case TARGET_PROT_NORMAL: return "NORMAL"; 158 case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; 159 case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; 160 case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; 161 case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; 162 case TARGET_PROT_DIN_PASS: return "DIN_PASS"; 163 case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; 164 default: return "UNKNOWN"; 165 } 166 } 167 168 /* This API intentionally takes dest as a parameter, rather than returning 169 * int value to avoid caller forgetting to issue wmb() after the store */ 170 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 171 { 172 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 173 *dest = atomic_inc_return(&base_vha->generation_tick); 174 /* memory barrier */ 175 wmb(); 176 } 177 178 /* Might release hw lock, then reaquire!! */ 179 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 180 { 181 /* Send marker if required */ 182 if (unlikely(vha->marker_needed != 0)) { 183 int rc = qla2x00_issue_marker(vha, vha_locked); 184 if (rc != QLA_SUCCESS) { 185 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 186 "qla_target(%d): issue_marker() failed\n", 187 vha->vp_idx); 188 } 189 return rc; 190 } 191 return QLA_SUCCESS; 192 } 193 194 static inline 195 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 196 uint8_t *d_id) 197 { 198 struct scsi_qla_host *host; 199 uint32_t key = 0; 200 201 if ((vha->d_id.b.area == d_id[1]) && (vha->d_id.b.domain == d_id[0]) && 202 (vha->d_id.b.al_pa == d_id[2])) 203 return vha; 204 205 key = (uint32_t)d_id[0] << 16; 206 key |= (uint32_t)d_id[1] << 8; 207 key |= (uint32_t)d_id[2]; 208 209 host = btree_lookup32(&vha->hw->tgt.host_map, key); 210 if (!host) 211 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005, 212 "Unable to find host %06x\n", key); 213 214 return host; 215 } 216 217 static inline 218 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 219 uint16_t vp_idx) 220 { 221 struct qla_hw_data *ha = vha->hw; 222 223 if (vha->vp_idx == vp_idx) 224 return vha; 225 226 BUG_ON(ha->tgt.tgt_vp_map == NULL); 227 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 228 return ha->tgt.tgt_vp_map[vp_idx].vha; 229 230 return NULL; 231 } 232 233 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 234 { 235 unsigned long flags; 236 237 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 238 239 vha->hw->tgt.num_pend_cmds++; 240 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 241 vha->qla_stats.stat_max_pend_cmds = 242 vha->hw->tgt.num_pend_cmds; 243 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 244 } 245 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 246 { 247 unsigned long flags; 248 249 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 250 vha->hw->tgt.num_pend_cmds--; 251 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 252 } 253 254 255 static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 256 struct atio_from_isp *atio, uint8_t ha_locked) 257 { 258 struct qla_tgt_sess_op *u; 259 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 260 unsigned long flags; 261 262 if (tgt->tgt_stop) { 263 ql_dbg(ql_dbg_async, vha, 0x502c, 264 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 265 vha->vp_idx); 266 goto out_term; 267 } 268 269 u = kzalloc(sizeof(*u), GFP_ATOMIC); 270 if (u == NULL) 271 goto out_term; 272 273 u->vha = vha; 274 memcpy(&u->atio, atio, sizeof(*atio)); 275 INIT_LIST_HEAD(&u->cmd_list); 276 277 spin_lock_irqsave(&vha->cmd_list_lock, flags); 278 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 279 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 280 281 schedule_delayed_work(&vha->unknown_atio_work, 1); 282 283 out: 284 return; 285 286 out_term: 287 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); 288 goto out; 289 } 290 291 static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 292 uint8_t ha_locked) 293 { 294 struct qla_tgt_sess_op *u, *t; 295 scsi_qla_host_t *host; 296 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 297 unsigned long flags; 298 uint8_t queued = 0; 299 300 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 301 if (u->aborted) { 302 ql_dbg(ql_dbg_async, vha, 0x502e, 303 "Freeing unknown %s %p, because of Abort\n", 304 "ATIO_TYPE7", u); 305 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 306 &u->atio, ha_locked, 0); 307 goto abort; 308 } 309 310 host = qlt_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 311 if (host != NULL) { 312 ql_dbg(ql_dbg_async, vha, 0x502f, 313 "Requeuing unknown ATIO_TYPE7 %p\n", u); 314 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 315 } else if (tgt->tgt_stop) { 316 ql_dbg(ql_dbg_async, vha, 0x503a, 317 "Freeing unknown %s %p, because tgt is being stopped\n", 318 "ATIO_TYPE7", u); 319 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 320 &u->atio, ha_locked, 0); 321 } else { 322 ql_dbg(ql_dbg_async, vha, 0x503d, 323 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 324 if (!queued) { 325 queued = 1; 326 schedule_delayed_work(&vha->unknown_atio_work, 327 1); 328 } 329 continue; 330 } 331 332 abort: 333 spin_lock_irqsave(&vha->cmd_list_lock, flags); 334 list_del(&u->cmd_list); 335 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 336 kfree(u); 337 } 338 } 339 340 void qlt_unknown_atio_work_fn(struct work_struct *work) 341 { 342 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 343 struct scsi_qla_host, unknown_atio_work); 344 345 qlt_try_to_dequeue_unknown_atios(vha, 0); 346 } 347 348 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 349 struct atio_from_isp *atio, uint8_t ha_locked) 350 { 351 ql_dbg(ql_dbg_tgt, vha, 0xe072, 352 "%s: qla_target(%d): type %x ox_id %04x\n", 353 __func__, vha->vp_idx, atio->u.raw.entry_type, 354 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 355 356 switch (atio->u.raw.entry_type) { 357 case ATIO_TYPE7: 358 { 359 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 360 atio->u.isp24.fcp_hdr.d_id); 361 if (unlikely(NULL == host)) { 362 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 363 "qla_target(%d): Received ATIO_TYPE7 " 364 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 365 atio->u.isp24.fcp_hdr.d_id[0], 366 atio->u.isp24.fcp_hdr.d_id[1], 367 atio->u.isp24.fcp_hdr.d_id[2]); 368 369 370 qlt_queue_unknown_atio(vha, atio, ha_locked); 371 break; 372 } 373 if (unlikely(!list_empty(&vha->unknown_atio_list))) 374 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 375 376 qlt_24xx_atio_pkt(host, atio, ha_locked); 377 break; 378 } 379 380 case IMMED_NOTIFY_TYPE: 381 { 382 struct scsi_qla_host *host = vha; 383 struct imm_ntfy_from_isp *entry = 384 (struct imm_ntfy_from_isp *)atio; 385 386 qlt_issue_marker(vha, ha_locked); 387 388 if ((entry->u.isp24.vp_index != 0xFF) && 389 (entry->u.isp24.nport_handle != 0xFFFF)) { 390 host = qlt_find_host_by_vp_idx(vha, 391 entry->u.isp24.vp_index); 392 if (unlikely(!host)) { 393 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 394 "qla_target(%d): Received " 395 "ATIO (IMMED_NOTIFY_TYPE) " 396 "with unknown vp_index %d\n", 397 vha->vp_idx, entry->u.isp24.vp_index); 398 break; 399 } 400 } 401 qlt_24xx_atio_pkt(host, atio, ha_locked); 402 break; 403 } 404 405 case VP_RPT_ID_IOCB_TYPE: 406 qla24xx_report_id_acquisition(vha, 407 (struct vp_rpt_id_entry_24xx *)atio); 408 break; 409 410 case ABTS_RECV_24XX: 411 { 412 struct abts_recv_from_24xx *entry = 413 (struct abts_recv_from_24xx *)atio; 414 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 415 entry->vp_index); 416 unsigned long flags; 417 418 if (unlikely(!host)) { 419 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 420 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 421 "received, with unknown vp_index %d\n", 422 vha->vp_idx, entry->vp_index); 423 break; 424 } 425 if (!ha_locked) 426 spin_lock_irqsave(&host->hw->hardware_lock, flags); 427 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 428 if (!ha_locked) 429 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 430 break; 431 } 432 433 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 434 435 default: 436 ql_dbg(ql_dbg_tgt, vha, 0xe040, 437 "qla_target(%d): Received unknown ATIO atio " 438 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 439 break; 440 } 441 442 return false; 443 } 444 445 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 446 struct rsp_que *rsp, response_t *pkt) 447 { 448 switch (pkt->entry_type) { 449 case CTIO_CRC2: 450 ql_dbg(ql_dbg_tgt, vha, 0xe073, 451 "qla_target(%d):%s: CRC2 Response pkt\n", 452 vha->vp_idx, __func__); 453 case CTIO_TYPE7: 454 { 455 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 456 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 457 entry->vp_index); 458 if (unlikely(!host)) { 459 ql_dbg(ql_dbg_tgt, vha, 0xe041, 460 "qla_target(%d): Response pkt (CTIO_TYPE7) " 461 "received, with unknown vp_index %d\n", 462 vha->vp_idx, entry->vp_index); 463 break; 464 } 465 qlt_response_pkt(host, rsp, pkt); 466 break; 467 } 468 469 case IMMED_NOTIFY_TYPE: 470 { 471 struct scsi_qla_host *host = vha; 472 struct imm_ntfy_from_isp *entry = 473 (struct imm_ntfy_from_isp *)pkt; 474 475 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 476 if (unlikely(!host)) { 477 ql_dbg(ql_dbg_tgt, vha, 0xe042, 478 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 479 "received, with unknown vp_index %d\n", 480 vha->vp_idx, entry->u.isp24.vp_index); 481 break; 482 } 483 qlt_response_pkt(host, rsp, pkt); 484 break; 485 } 486 487 case NOTIFY_ACK_TYPE: 488 { 489 struct scsi_qla_host *host = vha; 490 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 491 492 if (0xFF != entry->u.isp24.vp_index) { 493 host = qlt_find_host_by_vp_idx(vha, 494 entry->u.isp24.vp_index); 495 if (unlikely(!host)) { 496 ql_dbg(ql_dbg_tgt, vha, 0xe043, 497 "qla_target(%d): Response " 498 "pkt (NOTIFY_ACK_TYPE) " 499 "received, with unknown " 500 "vp_index %d\n", vha->vp_idx, 501 entry->u.isp24.vp_index); 502 break; 503 } 504 } 505 qlt_response_pkt(host, rsp, pkt); 506 break; 507 } 508 509 case ABTS_RECV_24XX: 510 { 511 struct abts_recv_from_24xx *entry = 512 (struct abts_recv_from_24xx *)pkt; 513 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 514 entry->vp_index); 515 if (unlikely(!host)) { 516 ql_dbg(ql_dbg_tgt, vha, 0xe044, 517 "qla_target(%d): Response pkt " 518 "(ABTS_RECV_24XX) received, with unknown " 519 "vp_index %d\n", vha->vp_idx, entry->vp_index); 520 break; 521 } 522 qlt_response_pkt(host, rsp, pkt); 523 break; 524 } 525 526 case ABTS_RESP_24XX: 527 { 528 struct abts_resp_to_24xx *entry = 529 (struct abts_resp_to_24xx *)pkt; 530 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 531 entry->vp_index); 532 if (unlikely(!host)) { 533 ql_dbg(ql_dbg_tgt, vha, 0xe045, 534 "qla_target(%d): Response pkt " 535 "(ABTS_RECV_24XX) received, with unknown " 536 "vp_index %d\n", vha->vp_idx, entry->vp_index); 537 break; 538 } 539 qlt_response_pkt(host, rsp, pkt); 540 break; 541 } 542 543 default: 544 qlt_response_pkt(vha, rsp, pkt); 545 break; 546 } 547 548 } 549 550 /* 551 * All qlt_plogi_ack_t operations are protected by hardware_lock 552 */ 553 static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 554 struct imm_ntfy_from_isp *ntfy, int type) 555 { 556 struct qla_work_evt *e; 557 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 558 if (!e) 559 return QLA_FUNCTION_FAILED; 560 561 e->u.nack.fcport = fcport; 562 e->u.nack.type = type; 563 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 564 return qla2x00_post_work(vha, e); 565 } 566 567 static 568 void qla2x00_async_nack_sp_done(void *s, int res) 569 { 570 struct srb *sp = (struct srb *)s; 571 struct scsi_qla_host *vha = sp->vha; 572 unsigned long flags; 573 574 ql_dbg(ql_dbg_disc, vha, 0x20f2, 575 "Async done-%s res %x %8phC type %d\n", 576 sp->name, res, sp->fcport->port_name, sp->type); 577 578 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 579 sp->fcport->flags &= ~FCF_ASYNC_SENT; 580 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 581 582 switch (sp->type) { 583 case SRB_NACK_PLOGI: 584 sp->fcport->login_gen++; 585 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 586 sp->fcport->logout_on_delete = 1; 587 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 588 break; 589 590 case SRB_NACK_PRLI: 591 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 592 sp->fcport->deleted = 0; 593 594 if (!sp->fcport->login_succ && 595 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 596 sp->fcport->login_succ = 1; 597 598 vha->fcport_count++; 599 600 if (!IS_IIDMA_CAPABLE(vha->hw) || 601 !vha->hw->flags.gpsc_supported) { 602 ql_dbg(ql_dbg_disc, vha, 0x20f3, 603 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 604 __func__, __LINE__, 605 sp->fcport->port_name, 606 vha->fcport_count); 607 608 qla24xx_post_upd_fcport_work(vha, sp->fcport); 609 } else { 610 ql_dbg(ql_dbg_disc, vha, 0x20f5, 611 "%s %d %8phC post gpsc fcp_cnt %d\n", 612 __func__, __LINE__, 613 sp->fcport->port_name, 614 vha->fcport_count); 615 616 qla24xx_post_gpsc_work(vha, sp->fcport); 617 } 618 } 619 break; 620 621 case SRB_NACK_LOGO: 622 sp->fcport->login_gen++; 623 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 624 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 625 break; 626 } 627 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 628 629 sp->free(sp); 630 } 631 632 int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 633 struct imm_ntfy_from_isp *ntfy, int type) 634 { 635 int rval = QLA_FUNCTION_FAILED; 636 srb_t *sp; 637 char *c = NULL; 638 639 fcport->flags |= FCF_ASYNC_SENT; 640 switch (type) { 641 case SRB_NACK_PLOGI: 642 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 643 c = "PLOGI"; 644 break; 645 case SRB_NACK_PRLI: 646 fcport->fw_login_state = DSC_LS_PRLI_PEND; 647 fcport->deleted = 0; 648 c = "PRLI"; 649 break; 650 case SRB_NACK_LOGO: 651 fcport->fw_login_state = DSC_LS_LOGO_PEND; 652 c = "LOGO"; 653 break; 654 } 655 656 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 657 if (!sp) 658 goto done; 659 660 sp->type = type; 661 sp->name = "nack"; 662 663 qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha)+2); 664 665 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 666 667 sp->done = qla2x00_async_nack_sp_done; 668 669 rval = qla2x00_start_sp(sp); 670 if (rval != QLA_SUCCESS) 671 goto done_free_sp; 672 673 ql_dbg(ql_dbg_disc, vha, 0x20f4, 674 "Async-%s %8phC hndl %x %s\n", 675 sp->name, fcport->port_name, sp->handle, c); 676 677 return rval; 678 679 done_free_sp: 680 sp->free(sp); 681 done: 682 fcport->flags &= ~FCF_ASYNC_SENT; 683 return rval; 684 } 685 686 void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 687 { 688 fc_port_t *t; 689 unsigned long flags; 690 691 switch (e->u.nack.type) { 692 case SRB_NACK_PRLI: 693 mutex_lock(&vha->vha_tgt.tgt_mutex); 694 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 695 mutex_unlock(&vha->vha_tgt.tgt_mutex); 696 if (t) { 697 ql_log(ql_log_info, vha, 0xd034, 698 "%s create sess success %p", __func__, t); 699 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 700 /* create sess has an extra kref */ 701 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 702 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 703 } 704 break; 705 } 706 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 707 (struct imm_ntfy_from_isp*)e->u.nack.iocb, e->u.nack.type); 708 } 709 710 void qla24xx_delete_sess_fn(struct work_struct *work) 711 { 712 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 713 struct qla_hw_data *ha = fcport->vha->hw; 714 unsigned long flags; 715 716 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 717 718 if (fcport->se_sess) { 719 ha->tgt.tgt_ops->shutdown_sess(fcport); 720 ha->tgt.tgt_ops->put_sess(fcport); 721 } else { 722 qlt_unreg_sess(fcport); 723 } 724 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 725 } 726 727 /* 728 * Called from qla2x00_reg_remote_port() 729 */ 730 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 731 { 732 struct qla_hw_data *ha = vha->hw; 733 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 734 struct fc_port *sess = fcport; 735 unsigned long flags; 736 737 if (!vha->hw->tgt.tgt_ops) 738 return; 739 740 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 741 if (tgt->tgt_stop) { 742 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 743 return; 744 } 745 746 if (fcport->disc_state == DSC_DELETE_PEND) { 747 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 748 return; 749 } 750 751 if (!sess->se_sess) { 752 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 753 754 mutex_lock(&vha->vha_tgt.tgt_mutex); 755 sess = qlt_create_sess(vha, fcport, false); 756 mutex_unlock(&vha->vha_tgt.tgt_mutex); 757 758 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 759 } else { 760 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 761 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 762 return; 763 } 764 765 if (!kref_get_unless_zero(&sess->sess_kref)) { 766 ql_dbg(ql_dbg_disc, vha, 0x2107, 767 "%s: kref_get fail sess %8phC \n", 768 __func__, sess->port_name); 769 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 770 return; 771 } 772 773 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 774 "qla_target(%u): %ssession for port %8phC " 775 "(loop ID %d) reappeared\n", vha->vp_idx, 776 sess->local ? "local " : "", sess->port_name, sess->loop_id); 777 778 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 779 "Reappeared sess %p\n", sess); 780 781 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 782 fcport->loop_id, 783 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 784 } 785 786 if (sess && sess->local) { 787 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 788 "qla_target(%u): local session for " 789 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 790 fcport->port_name, sess->loop_id); 791 sess->local = 0; 792 } 793 ha->tgt.tgt_ops->put_sess(sess); 794 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 795 } 796 797 /* 798 * This is a zero-base ref-counting solution, since hardware_lock 799 * guarantees that ref_count is not modified concurrently. 800 * Upon successful return content of iocb is undefined 801 */ 802 static struct qlt_plogi_ack_t * 803 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 804 struct imm_ntfy_from_isp *iocb) 805 { 806 struct qlt_plogi_ack_t *pla; 807 808 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 809 if (pla->id.b24 == id->b24) { 810 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 811 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 812 return pla; 813 } 814 } 815 816 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 817 if (!pla) { 818 ql_dbg(ql_dbg_async, vha, 0x5088, 819 "qla_target(%d): Allocation of plogi_ack failed\n", 820 vha->vp_idx); 821 return NULL; 822 } 823 824 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 825 pla->id = *id; 826 list_add_tail(&pla->list, &vha->plogi_ack_list); 827 828 return pla; 829 } 830 831 void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 832 struct qlt_plogi_ack_t *pla) 833 { 834 struct imm_ntfy_from_isp *iocb = &pla->iocb; 835 port_id_t port_id; 836 uint16_t loop_id; 837 fc_port_t *fcport = pla->fcport; 838 839 BUG_ON(!pla->ref_count); 840 pla->ref_count--; 841 842 if (pla->ref_count) 843 return; 844 845 ql_dbg(ql_dbg_disc, vha, 0x5089, 846 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 847 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 848 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 849 iocb->u.isp24.port_id[0], 850 le16_to_cpu(iocb->u.isp24.nport_handle), 851 iocb->u.isp24.exchange_address, iocb->ox_id); 852 853 port_id.b.domain = iocb->u.isp24.port_id[2]; 854 port_id.b.area = iocb->u.isp24.port_id[1]; 855 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 856 port_id.b.rsvd_1 = 0; 857 858 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 859 860 fcport->loop_id = loop_id; 861 fcport->d_id = port_id; 862 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 863 864 list_for_each_entry(fcport, &vha->vp_fcports, list) { 865 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 866 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 867 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 868 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 869 } 870 871 list_del(&pla->list); 872 kmem_cache_free(qla_tgt_plogi_cachep, pla); 873 } 874 875 void 876 qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 877 struct fc_port *sess, enum qlt_plogi_link_t link) 878 { 879 struct imm_ntfy_from_isp *iocb = &pla->iocb; 880 /* Inc ref_count first because link might already be pointing at pla */ 881 pla->ref_count++; 882 883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 884 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 885 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 886 sess, link, sess->port_name, 887 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 888 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 889 pla->ref_count, pla, link); 890 891 if (sess->plogi_link[link]) 892 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 893 894 if (link == QLT_PLOGI_LINK_SAME_WWN) 895 pla->fcport = sess; 896 897 sess->plogi_link[link] = pla; 898 } 899 900 typedef struct { 901 /* These fields must be initialized by the caller */ 902 port_id_t id; 903 /* 904 * number of cmds dropped while we were waiting for 905 * initiator to ack LOGO initialize to 1 if LOGO is 906 * triggered by a command, otherwise, to 0 907 */ 908 int cmd_count; 909 910 /* These fields are used by callee */ 911 struct list_head list; 912 } qlt_port_logo_t; 913 914 static void 915 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 916 { 917 qlt_port_logo_t *tmp; 918 int res; 919 920 mutex_lock(&vha->vha_tgt.tgt_mutex); 921 922 list_for_each_entry(tmp, &vha->logo_list, list) { 923 if (tmp->id.b24 == logo->id.b24) { 924 tmp->cmd_count += logo->cmd_count; 925 mutex_unlock(&vha->vha_tgt.tgt_mutex); 926 return; 927 } 928 } 929 930 list_add_tail(&logo->list, &vha->logo_list); 931 932 mutex_unlock(&vha->vha_tgt.tgt_mutex); 933 934 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 935 936 mutex_lock(&vha->vha_tgt.tgt_mutex); 937 list_del(&logo->list); 938 mutex_unlock(&vha->vha_tgt.tgt_mutex); 939 940 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 941 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 942 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 943 logo->cmd_count, res); 944 } 945 946 static void qlt_free_session_done(struct work_struct *work) 947 { 948 struct fc_port *sess = container_of(work, struct fc_port, 949 free_work); 950 struct qla_tgt *tgt = sess->tgt; 951 struct scsi_qla_host *vha = sess->vha; 952 struct qla_hw_data *ha = vha->hw; 953 unsigned long flags; 954 bool logout_started = false; 955 struct event_arg ea; 956 scsi_qla_host_t *base_vha; 957 958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 959 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 960 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 961 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 962 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 963 sess->logout_on_delete, sess->keep_nport_handle, 964 sess->send_els_logo); 965 966 if (!IS_SW_RESV_ADDR(sess->d_id)) { 967 if (sess->send_els_logo) { 968 qlt_port_logo_t logo; 969 970 logo.id = sess->d_id; 971 logo.cmd_count = 0; 972 qlt_send_first_logo(vha, &logo); 973 } 974 975 if (sess->logout_on_delete) { 976 int rc; 977 978 rc = qla2x00_post_async_logout_work(vha, sess, NULL); 979 if (rc != QLA_SUCCESS) 980 ql_log(ql_log_warn, vha, 0xf085, 981 "Schedule logo failed sess %p rc %d\n", 982 sess, rc); 983 else 984 logout_started = true; 985 } 986 } 987 988 /* 989 * Release the target session for FC Nexus from fabric module code. 990 */ 991 if (sess->se_sess != NULL) 992 ha->tgt.tgt_ops->free_session(sess); 993 994 if (logout_started) { 995 bool traced = false; 996 997 while (!ACCESS_ONCE(sess->logout_completed)) { 998 if (!traced) { 999 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 1000 "%s: waiting for sess %p logout\n", 1001 __func__, sess); 1002 traced = true; 1003 } 1004 msleep(100); 1005 } 1006 1007 ql_dbg(ql_dbg_disc, vha, 0xf087, 1008 "%s: sess %p logout completed\n",__func__, sess); 1009 } 1010 1011 if (sess->logo_ack_needed) { 1012 sess->logo_ack_needed = 0; 1013 qla24xx_async_notify_ack(vha, sess, 1014 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1015 } 1016 1017 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1018 if (sess->se_sess) { 1019 sess->se_sess = NULL; 1020 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1021 tgt->sess_count--; 1022 } 1023 1024 sess->disc_state = DSC_DELETED; 1025 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1026 sess->deleted = QLA_SESS_DELETED; 1027 sess->login_retry = vha->hw->login_retry_count; 1028 1029 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1030 vha->fcport_count--; 1031 sess->login_succ = 0; 1032 } 1033 1034 if (sess->chip_reset != ha->base_qpair->chip_reset) 1035 qla2x00_clear_loop_id(sess); 1036 1037 if (sess->conflict) { 1038 sess->conflict->login_pause = 0; 1039 sess->conflict = NULL; 1040 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1041 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1042 } 1043 1044 { 1045 struct qlt_plogi_ack_t *own = 1046 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1047 struct qlt_plogi_ack_t *con = 1048 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1049 struct imm_ntfy_from_isp *iocb; 1050 1051 if (con) { 1052 iocb = &con->iocb; 1053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1054 "se_sess %p / sess %p port %8phC is gone," 1055 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1056 sess->se_sess, sess, sess->port_name, 1057 own ? "releasing own PLOGI" : "no own PLOGI pending", 1058 own ? own->ref_count : -1, 1059 iocb->u.isp24.port_name, con->ref_count); 1060 qlt_plogi_ack_unref(vha, con); 1061 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1062 } else { 1063 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1064 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1065 sess->se_sess, sess, sess->port_name, 1066 own ? "releasing own PLOGI" : 1067 "no own PLOGI pending", 1068 own ? own->ref_count : -1); 1069 } 1070 1071 if (own) { 1072 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1073 qlt_plogi_ack_unref(vha, own); 1074 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1075 } 1076 } 1077 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1078 1079 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 1080 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1081 sess, sess->port_name, vha->fcport_count); 1082 1083 if (tgt && (tgt->sess_count == 0)) 1084 wake_up_all(&tgt->waitQ); 1085 1086 if (vha->fcport_count == 0) 1087 wake_up_all(&vha->fcport_waitQ); 1088 1089 base_vha = pci_get_drvdata(ha->pdev); 1090 if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) 1091 return; 1092 1093 if (!tgt || !tgt->tgt_stop) { 1094 memset(&ea, 0, sizeof(ea)); 1095 ea.event = FCME_DELETE_DONE; 1096 ea.fcport = sess; 1097 qla2x00_fcport_event_handler(vha, &ea); 1098 } 1099 } 1100 1101 /* ha->tgt.sess_lock supposed to be held on entry */ 1102 void qlt_unreg_sess(struct fc_port *sess) 1103 { 1104 struct scsi_qla_host *vha = sess->vha; 1105 1106 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1107 "%s sess %p for deletion %8phC\n", 1108 __func__, sess, sess->port_name); 1109 1110 if (sess->se_sess) 1111 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1112 1113 qla2x00_mark_device_lost(vha, sess, 1, 1); 1114 1115 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1116 sess->disc_state = DSC_DELETE_PEND; 1117 sess->last_rscn_gen = sess->rscn_gen; 1118 sess->last_login_gen = sess->login_gen; 1119 1120 if (sess->nvme_flag & NVME_FLAG_REGISTERED) 1121 schedule_work(&sess->nvme_del_work); 1122 1123 INIT_WORK(&sess->free_work, qlt_free_session_done); 1124 schedule_work(&sess->free_work); 1125 } 1126 EXPORT_SYMBOL(qlt_unreg_sess); 1127 1128 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1129 { 1130 struct qla_hw_data *ha = vha->hw; 1131 struct fc_port *sess = NULL; 1132 uint16_t loop_id; 1133 int res = 0; 1134 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1135 unsigned long flags; 1136 1137 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1138 if (loop_id == 0xFFFF) { 1139 /* Global event */ 1140 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1141 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1142 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1143 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1144 } else { 1145 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1146 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1147 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1148 } 1149 1150 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1151 "Using sess for qla_tgt_reset: %p\n", sess); 1152 if (!sess) { 1153 res = -ESRCH; 1154 return res; 1155 } 1156 1157 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1158 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1159 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1160 mcmd, loop_id); 1161 1162 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1163 } 1164 1165 static void qla24xx_chk_fcp_state(struct fc_port *sess) 1166 { 1167 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1168 sess->logout_on_delete = 0; 1169 sess->logo_ack_needed = 0; 1170 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1171 sess->scan_state = 0; 1172 } 1173 } 1174 1175 /* ha->tgt.sess_lock supposed to be held on entry */ 1176 void qlt_schedule_sess_for_deletion(struct fc_port *sess, 1177 bool immediate) 1178 { 1179 struct qla_tgt *tgt = sess->tgt; 1180 1181 if (sess->disc_state == DSC_DELETE_PEND) 1182 return; 1183 1184 if (sess->disc_state == DSC_DELETED) { 1185 if (tgt && tgt->tgt_stop && (tgt->sess_count == 0)) 1186 wake_up_all(&tgt->waitQ); 1187 if (sess->vha->fcport_count == 0) 1188 wake_up_all(&sess->vha->fcport_waitQ); 1189 1190 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1191 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) 1192 return; 1193 } 1194 1195 sess->disc_state = DSC_DELETE_PEND; 1196 1197 if (sess->deleted == QLA_SESS_DELETED) 1198 sess->logout_on_delete = 0; 1199 1200 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1201 qla24xx_chk_fcp_state(sess); 1202 1203 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 1204 "Scheduling sess %p for deletion\n", sess); 1205 1206 schedule_work(&sess->del_work); 1207 } 1208 1209 void qlt_schedule_sess_for_deletion_lock(struct fc_port *sess) 1210 { 1211 unsigned long flags; 1212 struct qla_hw_data *ha = sess->vha->hw; 1213 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1214 qlt_schedule_sess_for_deletion(sess, 1); 1215 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1216 } 1217 1218 /* ha->tgt.sess_lock supposed to be held on entry */ 1219 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1220 { 1221 struct fc_port *sess; 1222 scsi_qla_host_t *vha = tgt->vha; 1223 1224 list_for_each_entry(sess, &vha->vp_fcports, list) { 1225 if (sess->se_sess) 1226 qlt_schedule_sess_for_deletion(sess, 1); 1227 } 1228 1229 /* At this point tgt could be already dead */ 1230 } 1231 1232 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 1233 uint16_t *loop_id) 1234 { 1235 struct qla_hw_data *ha = vha->hw; 1236 dma_addr_t gid_list_dma; 1237 struct gid_list_info *gid_list; 1238 char *id_iter; 1239 int res, rc, i; 1240 uint16_t entries; 1241 1242 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1243 &gid_list_dma, GFP_KERNEL); 1244 if (!gid_list) { 1245 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1246 "qla_target(%d): DMA Alloc failed of %u\n", 1247 vha->vp_idx, qla2x00_gid_list_size(ha)); 1248 return -ENOMEM; 1249 } 1250 1251 /* Get list of logged in devices */ 1252 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1253 if (rc != QLA_SUCCESS) { 1254 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1255 "qla_target(%d): get_id_list() failed: %x\n", 1256 vha->vp_idx, rc); 1257 res = -EBUSY; 1258 goto out_free_id_list; 1259 } 1260 1261 id_iter = (char *)gid_list; 1262 res = -ENOENT; 1263 for (i = 0; i < entries; i++) { 1264 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 1265 if ((gid->al_pa == s_id[2]) && 1266 (gid->area == s_id[1]) && 1267 (gid->domain == s_id[0])) { 1268 *loop_id = le16_to_cpu(gid->loop_id); 1269 res = 0; 1270 break; 1271 } 1272 id_iter += ha->gid_list_info_size; 1273 } 1274 1275 out_free_id_list: 1276 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1277 gid_list, gid_list_dma); 1278 return res; 1279 } 1280 1281 /* 1282 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1283 * Caller must put it. 1284 */ 1285 static struct fc_port *qlt_create_sess( 1286 struct scsi_qla_host *vha, 1287 fc_port_t *fcport, 1288 bool local) 1289 { 1290 struct qla_hw_data *ha = vha->hw; 1291 struct fc_port *sess = fcport; 1292 unsigned long flags; 1293 1294 if (vha->vha_tgt.qla_tgt->tgt_stop) 1295 return NULL; 1296 1297 if (fcport->se_sess) { 1298 if (!kref_get_unless_zero(&sess->sess_kref)) { 1299 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1300 "%s: kref_get_unless_zero failed for %8phC\n", 1301 __func__, sess->port_name); 1302 return NULL; 1303 } 1304 return fcport; 1305 } 1306 sess->tgt = vha->vha_tgt.qla_tgt; 1307 sess->local = local; 1308 1309 /* 1310 * Under normal circumstances we want to logout from firmware when 1311 * session eventually ends and release corresponding nport handle. 1312 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1313 * code will adjust these flags as necessary. 1314 */ 1315 sess->logout_on_delete = 1; 1316 sess->keep_nport_handle = 0; 1317 sess->logout_completed = 0; 1318 1319 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1320 &fcport->port_name[0], sess) < 0) { 1321 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1322 "(%d) %8phC check_initiator_node_acl failed\n", 1323 vha->vp_idx, fcport->port_name); 1324 return NULL; 1325 } else { 1326 kref_init(&fcport->sess_kref); 1327 /* 1328 * Take an extra reference to ->sess_kref here to handle 1329 * fc_port access across ->tgt.sess_lock reaquire. 1330 */ 1331 if (!kref_get_unless_zero(&sess->sess_kref)) { 1332 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1333 "%s: kref_get_unless_zero failed for %8phC\n", 1334 __func__, sess->port_name); 1335 return NULL; 1336 } 1337 1338 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1339 if (!IS_SW_RESV_ADDR(sess->d_id)) 1340 vha->vha_tgt.qla_tgt->sess_count++; 1341 1342 qlt_do_generation_tick(vha, &sess->generation); 1343 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1344 } 1345 1346 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1347 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1348 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1349 vha->vha_tgt.qla_tgt->sess_count); 1350 1351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1352 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1353 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1354 vha->vp_idx, local ? "local " : "", fcport->port_name, 1355 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1356 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1357 1358 return sess; 1359 } 1360 1361 /* 1362 * max_gen - specifies maximum session generation 1363 * at which this deletion requestion is still valid 1364 */ 1365 void 1366 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1367 { 1368 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1369 struct fc_port *sess = fcport; 1370 unsigned long flags; 1371 1372 if (!vha->hw->tgt.tgt_ops) 1373 return; 1374 1375 if (!tgt) 1376 return; 1377 1378 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1379 if (tgt->tgt_stop) { 1380 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1381 return; 1382 } 1383 if (!sess->se_sess) { 1384 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1385 return; 1386 } 1387 1388 if (max_gen - sess->generation < 0) { 1389 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1390 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1391 "Ignoring stale deletion request for se_sess %p / sess %p" 1392 " for port %8phC, req_gen %d, sess_gen %d\n", 1393 sess->se_sess, sess, sess->port_name, max_gen, 1394 sess->generation); 1395 return; 1396 } 1397 1398 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1399 1400 sess->local = 1; 1401 qlt_schedule_sess_for_deletion(sess, false); 1402 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1403 } 1404 1405 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1406 { 1407 struct qla_hw_data *ha = tgt->ha; 1408 unsigned long flags; 1409 int res; 1410 /* 1411 * We need to protect against race, when tgt is freed before or 1412 * inside wake_up() 1413 */ 1414 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1415 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1416 "tgt %p, sess_count=%d\n", 1417 tgt, tgt->sess_count); 1418 res = (tgt->sess_count == 0); 1419 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1420 1421 return res; 1422 } 1423 1424 /* Called by tcm_qla2xxx configfs code */ 1425 int qlt_stop_phase1(struct qla_tgt *tgt) 1426 { 1427 struct scsi_qla_host *vha = tgt->vha; 1428 struct qla_hw_data *ha = tgt->ha; 1429 unsigned long flags; 1430 1431 mutex_lock(&qla_tgt_mutex); 1432 if (!vha->fc_vport) { 1433 struct Scsi_Host *sh = vha->host; 1434 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 1435 bool npiv_vports; 1436 1437 spin_lock_irqsave(sh->host_lock, flags); 1438 npiv_vports = (fc_host->npiv_vports_inuse); 1439 spin_unlock_irqrestore(sh->host_lock, flags); 1440 1441 if (npiv_vports) { 1442 mutex_unlock(&qla_tgt_mutex); 1443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 1444 "NPIV is in use. Can not stop target\n"); 1445 return -EPERM; 1446 } 1447 } 1448 if (tgt->tgt_stop || tgt->tgt_stopped) { 1449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1450 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1451 mutex_unlock(&qla_tgt_mutex); 1452 return -EPERM; 1453 } 1454 1455 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1456 vha->host_no, vha); 1457 /* 1458 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1459 * Lock is needed, because we still can get an incoming packet. 1460 */ 1461 mutex_lock(&vha->vha_tgt.tgt_mutex); 1462 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1463 tgt->tgt_stop = 1; 1464 qlt_clear_tgt_db(tgt); 1465 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1466 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1467 mutex_unlock(&qla_tgt_mutex); 1468 1469 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1470 "Waiting for sess works (tgt %p)", tgt); 1471 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1472 while (!list_empty(&tgt->sess_works_list)) { 1473 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1474 flush_scheduled_work(); 1475 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1476 } 1477 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1478 1479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1480 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1481 1482 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1483 1484 /* Big hammer */ 1485 if (!ha->flags.host_shutting_down && 1486 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1487 qlt_disable_vha(vha); 1488 1489 /* Wait for sessions to clear out (just in case) */ 1490 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1491 return 0; 1492 } 1493 EXPORT_SYMBOL(qlt_stop_phase1); 1494 1495 /* Called by tcm_qla2xxx configfs code */ 1496 void qlt_stop_phase2(struct qla_tgt *tgt) 1497 { 1498 scsi_qla_host_t *vha = tgt->vha; 1499 1500 if (tgt->tgt_stopped) { 1501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1502 "Already in tgt->tgt_stopped state\n"); 1503 dump_stack(); 1504 return; 1505 } 1506 if (!tgt->tgt_stop) { 1507 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1508 "%s: phase1 stop is not completed\n", __func__); 1509 dump_stack(); 1510 return; 1511 } 1512 1513 mutex_lock(&vha->vha_tgt.tgt_mutex); 1514 tgt->tgt_stop = 0; 1515 tgt->tgt_stopped = 1; 1516 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1517 1518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1519 tgt); 1520 } 1521 EXPORT_SYMBOL(qlt_stop_phase2); 1522 1523 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1524 static void qlt_release(struct qla_tgt *tgt) 1525 { 1526 scsi_qla_host_t *vha = tgt->vha; 1527 void *node; 1528 u64 key = 0; 1529 u16 i; 1530 struct qla_qpair_hint *h; 1531 1532 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stop && 1533 !tgt->tgt_stopped) 1534 qlt_stop_phase1(tgt); 1535 1536 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1537 qlt_stop_phase2(tgt); 1538 1539 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1540 unsigned long flags; 1541 1542 h = &tgt->qphints[i]; 1543 if (h->qpair) { 1544 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1545 list_del(&h->hint_elem); 1546 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1547 h->qpair = NULL; 1548 } 1549 } 1550 kfree(tgt->qphints); 1551 1552 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1553 btree_remove64(&tgt->lun_qpair_map, key); 1554 1555 btree_destroy64(&tgt->lun_qpair_map); 1556 1557 vha->vha_tgt.qla_tgt = NULL; 1558 1559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1560 "Release of tgt %p finished\n", tgt); 1561 1562 kfree(tgt); 1563 } 1564 1565 /* ha->hardware_lock supposed to be held on entry */ 1566 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1567 const void *param, unsigned int param_size) 1568 { 1569 struct qla_tgt_sess_work_param *prm; 1570 unsigned long flags; 1571 1572 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1573 if (!prm) { 1574 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1575 "qla_target(%d): Unable to create session " 1576 "work, command will be refused", 0); 1577 return -ENOMEM; 1578 } 1579 1580 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1581 "Scheduling work (type %d, prm %p)" 1582 " to find session for param %p (size %d, tgt %p)\n", 1583 type, prm, param, param_size, tgt); 1584 1585 prm->type = type; 1586 memcpy(&prm->tm_iocb, param, param_size); 1587 1588 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1589 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1590 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1591 1592 schedule_work(&tgt->sess_work); 1593 1594 return 0; 1595 } 1596 1597 /* 1598 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1599 */ 1600 static void qlt_send_notify_ack(struct qla_qpair *qpair, 1601 struct imm_ntfy_from_isp *ntfy, 1602 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1603 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1604 { 1605 struct scsi_qla_host *vha = qpair->vha; 1606 struct qla_hw_data *ha = vha->hw; 1607 request_t *pkt; 1608 struct nack_to_isp *nack; 1609 1610 if (!ha->flags.fw_started) 1611 return; 1612 1613 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1614 1615 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1616 if (!pkt) { 1617 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1618 "qla_target(%d): %s failed: unable to allocate " 1619 "request packet\n", vha->vp_idx, __func__); 1620 return; 1621 } 1622 1623 if (vha->vha_tgt.qla_tgt != NULL) 1624 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1625 1626 pkt->entry_type = NOTIFY_ACK_TYPE; 1627 pkt->entry_count = 1; 1628 1629 nack = (struct nack_to_isp *)pkt; 1630 nack->ox_id = ntfy->ox_id; 1631 1632 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1633 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1634 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1635 nack->u.isp24.flags = ntfy->u.isp24.flags & 1636 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1637 } 1638 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1639 nack->u.isp24.status = ntfy->u.isp24.status; 1640 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1641 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1642 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1643 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1644 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1645 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1646 nack->u.isp24.srr_reject_code = srr_reject_code; 1647 nack->u.isp24.srr_reject_code_expl = srr_explan; 1648 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1649 1650 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1651 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1652 vha->vp_idx, nack->u.isp24.status); 1653 1654 /* Memory Barrier */ 1655 wmb(); 1656 qla2x00_start_iocbs(vha, qpair->req); 1657 } 1658 1659 /* 1660 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1661 */ 1662 static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1663 struct abts_recv_from_24xx *abts, uint32_t status, 1664 bool ids_reversed) 1665 { 1666 struct scsi_qla_host *vha = qpair->vha; 1667 struct qla_hw_data *ha = vha->hw; 1668 struct abts_resp_to_24xx *resp; 1669 uint32_t f_ctl; 1670 uint8_t *p; 1671 1672 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1673 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1674 ha, abts, status); 1675 1676 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1677 NULL); 1678 if (!resp) { 1679 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1680 "qla_target(%d): %s failed: unable to allocate " 1681 "request packet", vha->vp_idx, __func__); 1682 return; 1683 } 1684 1685 resp->entry_type = ABTS_RESP_24XX; 1686 resp->entry_count = 1; 1687 resp->nport_handle = abts->nport_handle; 1688 resp->vp_index = vha->vp_idx; 1689 resp->sof_type = abts->sof_type; 1690 resp->exchange_address = abts->exchange_address; 1691 resp->fcp_hdr_le = abts->fcp_hdr_le; 1692 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1693 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1694 F_CTL_SEQ_INITIATIVE); 1695 p = (uint8_t *)&f_ctl; 1696 resp->fcp_hdr_le.f_ctl[0] = *p++; 1697 resp->fcp_hdr_le.f_ctl[1] = *p++; 1698 resp->fcp_hdr_le.f_ctl[2] = *p; 1699 if (ids_reversed) { 1700 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1701 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1702 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1703 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1704 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1705 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1706 } else { 1707 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1708 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1709 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1710 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1711 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1712 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1713 } 1714 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1715 if (status == FCP_TMF_CMPL) { 1716 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1717 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1718 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1719 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1720 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1721 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1722 } else { 1723 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1724 resp->payload.ba_rjt.reason_code = 1725 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1726 /* Other bytes are zero */ 1727 } 1728 1729 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1730 1731 /* Memory Barrier */ 1732 wmb(); 1733 if (qpair->reqq_start_iocbs) 1734 qpair->reqq_start_iocbs(qpair); 1735 else 1736 qla2x00_start_iocbs(vha, qpair->req); 1737 } 1738 1739 /* 1740 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1741 */ 1742 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1743 struct abts_resp_from_24xx_fw *entry) 1744 { 1745 struct ctio7_to_24xx *ctio; 1746 1747 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1748 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1749 1750 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready( 1751 vha->hw->base_qpair, NULL); 1752 if (ctio == NULL) { 1753 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1754 "qla_target(%d): %s failed: unable to allocate " 1755 "request packet\n", vha->vp_idx, __func__); 1756 return; 1757 } 1758 1759 /* 1760 * We've got on entrance firmware's response on by us generated 1761 * ABTS response. So, in it ID fields are reversed. 1762 */ 1763 1764 ctio->entry_type = CTIO_TYPE7; 1765 ctio->entry_count = 1; 1766 ctio->nport_handle = entry->nport_handle; 1767 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1768 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1769 ctio->vp_index = vha->vp_idx; 1770 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1771 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1772 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1773 ctio->exchange_addr = entry->exchange_addr_to_abort; 1774 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1775 CTIO7_FLAGS_TERMINATE); 1776 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1777 1778 /* Memory Barrier */ 1779 wmb(); 1780 qla2x00_start_iocbs(vha, vha->req); 1781 1782 qlt_24xx_send_abts_resp(vha->hw->base_qpair, 1783 (struct abts_recv_from_24xx *)entry, 1784 FCP_TMF_CMPL, true); 1785 } 1786 1787 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1788 { 1789 struct qla_tgt_sess_op *op; 1790 struct qla_tgt_cmd *cmd; 1791 unsigned long flags; 1792 1793 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1794 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1795 if (tag == op->atio.u.isp24.exchange_addr) { 1796 op->aborted = true; 1797 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1798 return 1; 1799 } 1800 } 1801 1802 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1803 if (tag == op->atio.u.isp24.exchange_addr) { 1804 op->aborted = true; 1805 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1806 return 1; 1807 } 1808 } 1809 1810 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1811 if (tag == cmd->atio.u.isp24.exchange_addr) { 1812 cmd->aborted = 1; 1813 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1814 return 1; 1815 } 1816 } 1817 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1818 1819 return 0; 1820 } 1821 1822 /* drop cmds for the given lun 1823 * XXX only looks for cmds on the port through which lun reset was recieved 1824 * XXX does not go through the list of other port (which may have cmds 1825 * for the same lun) 1826 */ 1827 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1828 u64 lun, uint8_t *s_id) 1829 { 1830 struct qla_tgt_sess_op *op; 1831 struct qla_tgt_cmd *cmd; 1832 uint32_t key; 1833 unsigned long flags; 1834 1835 key = sid_to_key(s_id); 1836 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1837 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1838 uint32_t op_key; 1839 u64 op_lun; 1840 1841 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1842 op_lun = scsilun_to_int( 1843 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1844 if (op_key == key && op_lun == lun) 1845 op->aborted = true; 1846 } 1847 1848 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1849 uint32_t op_key; 1850 u64 op_lun; 1851 1852 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1853 op_lun = scsilun_to_int( 1854 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1855 if (op_key == key && op_lun == lun) 1856 op->aborted = true; 1857 } 1858 1859 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1860 uint32_t cmd_key; 1861 u64 cmd_lun; 1862 1863 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1864 cmd_lun = scsilun_to_int( 1865 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1866 if (cmd_key == key && cmd_lun == lun) 1867 cmd->aborted = 1; 1868 } 1869 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1870 } 1871 1872 /* ha->hardware_lock supposed to be held on entry */ 1873 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1874 struct abts_recv_from_24xx *abts, struct fc_port *sess) 1875 { 1876 struct qla_hw_data *ha = vha->hw; 1877 struct qla_tgt_mgmt_cmd *mcmd; 1878 int rc; 1879 1880 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 1881 /* send TASK_ABORT response immediately */ 1882 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_CMPL, false); 1883 return 0; 1884 } 1885 1886 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 1887 "qla_target(%d): task abort (tag=%d)\n", 1888 vha->vp_idx, abts->exchange_addr_to_abort); 1889 1890 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 1891 if (mcmd == NULL) { 1892 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 1893 "qla_target(%d): %s: Allocation of ABORT cmd failed", 1894 vha->vp_idx, __func__); 1895 return -ENOMEM; 1896 } 1897 memset(mcmd, 0, sizeof(*mcmd)); 1898 1899 mcmd->sess = sess; 1900 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 1901 mcmd->reset_count = ha->base_qpair->chip_reset; 1902 mcmd->tmr_func = QLA_TGT_ABTS; 1903 mcmd->qpair = ha->base_qpair; 1904 1905 /* 1906 * LUN is looked up by target-core internally based on the passed 1907 * abts->exchange_addr_to_abort tag. 1908 */ 1909 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, mcmd->tmr_func, 1910 abts->exchange_addr_to_abort); 1911 if (rc != 0) { 1912 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, 1913 "qla_target(%d): tgt_ops->handle_tmr()" 1914 " failed: %d", vha->vp_idx, rc); 1915 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1916 return -EFAULT; 1917 } 1918 1919 return 0; 1920 } 1921 1922 /* 1923 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1924 */ 1925 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1926 struct abts_recv_from_24xx *abts) 1927 { 1928 struct qla_hw_data *ha = vha->hw; 1929 struct fc_port *sess; 1930 uint32_t tag = abts->exchange_addr_to_abort; 1931 uint8_t s_id[3]; 1932 int rc; 1933 unsigned long flags; 1934 1935 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 1936 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 1937 "qla_target(%d): ABTS: Abort Sequence not " 1938 "supported\n", vha->vp_idx); 1939 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 1940 false); 1941 return; 1942 } 1943 1944 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 1945 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 1946 "qla_target(%d): ABTS: Unknown Exchange " 1947 "Address received\n", vha->vp_idx); 1948 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 1949 false); 1950 return; 1951 } 1952 1953 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 1954 "qla_target(%d): task abort (s_id=%x:%x:%x, " 1955 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 1956 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 1957 le32_to_cpu(abts->fcp_hdr_le.parameter)); 1958 1959 s_id[0] = abts->fcp_hdr_le.s_id[2]; 1960 s_id[1] = abts->fcp_hdr_le.s_id[1]; 1961 s_id[2] = abts->fcp_hdr_le.s_id[0]; 1962 1963 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1964 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 1965 if (!sess) { 1966 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 1967 "qla_target(%d): task abort for non-existant session\n", 1968 vha->vp_idx); 1969 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 1970 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); 1971 1972 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1973 1974 if (rc != 0) { 1975 qlt_24xx_send_abts_resp(ha->base_qpair, abts, 1976 FCP_TMF_REJECTED, false); 1977 } 1978 return; 1979 } 1980 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1981 1982 1983 if (sess->deleted) { 1984 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 1985 false); 1986 return; 1987 } 1988 1989 rc = __qlt_24xx_handle_abts(vha, abts, sess); 1990 if (rc != 0) { 1991 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 1992 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 1993 vha->vp_idx, rc); 1994 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 1995 false); 1996 return; 1997 } 1998 } 1999 2000 /* 2001 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2002 */ 2003 static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2004 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2005 { 2006 struct scsi_qla_host *ha = qpair->vha; 2007 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2008 struct ctio7_to_24xx *ctio; 2009 uint16_t temp; 2010 2011 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2012 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2013 ha, atio, resp_code); 2014 2015 2016 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2017 if (ctio == NULL) { 2018 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2019 "qla_target(%d): %s failed: unable to allocate " 2020 "request packet\n", ha->vp_idx, __func__); 2021 return; 2022 } 2023 2024 ctio->entry_type = CTIO_TYPE7; 2025 ctio->entry_count = 1; 2026 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2027 ctio->nport_handle = mcmd->sess->loop_id; 2028 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2029 ctio->vp_index = ha->vp_idx; 2030 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2031 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2032 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2033 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2034 temp = (atio->u.isp24.attr << 9)| 2035 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2036 ctio->u.status1.flags = cpu_to_le16(temp); 2037 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2038 ctio->u.status1.ox_id = cpu_to_le16(temp); 2039 ctio->u.status1.scsi_status = 2040 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2041 ctio->u.status1.response_len = cpu_to_le16(8); 2042 ctio->u.status1.sense_data[0] = resp_code; 2043 2044 /* Memory Barrier */ 2045 wmb(); 2046 if (qpair->reqq_start_iocbs) 2047 qpair->reqq_start_iocbs(qpair); 2048 else 2049 qla2x00_start_iocbs(ha, qpair->req); 2050 } 2051 2052 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2053 { 2054 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2055 } 2056 EXPORT_SYMBOL(qlt_free_mcmd); 2057 2058 /* 2059 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2060 * reacquire 2061 */ 2062 void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2063 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2064 { 2065 struct atio_from_isp *atio = &cmd->atio; 2066 struct ctio7_to_24xx *ctio; 2067 uint16_t temp; 2068 struct scsi_qla_host *vha = cmd->vha; 2069 2070 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2071 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2072 "sense_key=%02x, asc=%02x, ascq=%02x", 2073 vha, atio, scsi_status, sense_key, asc, ascq); 2074 2075 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2076 if (!ctio) { 2077 ql_dbg(ql_dbg_async, vha, 0x3067, 2078 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2079 vha->host_no, __func__); 2080 goto out; 2081 } 2082 2083 ctio->entry_type = CTIO_TYPE7; 2084 ctio->entry_count = 1; 2085 ctio->handle = QLA_TGT_SKIP_HANDLE; 2086 ctio->nport_handle = cmd->sess->loop_id; 2087 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2088 ctio->vp_index = vha->vp_idx; 2089 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2090 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2091 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2092 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2093 temp = (atio->u.isp24.attr << 9) | 2094 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2095 ctio->u.status1.flags = cpu_to_le16(temp); 2096 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2097 ctio->u.status1.ox_id = cpu_to_le16(temp); 2098 ctio->u.status1.scsi_status = 2099 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2100 ctio->u.status1.response_len = cpu_to_le16(18); 2101 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2102 2103 if (ctio->u.status1.residual != 0) 2104 ctio->u.status1.scsi_status |= 2105 cpu_to_le16(SS_RESIDUAL_UNDER); 2106 2107 /* Response code and sense key */ 2108 put_unaligned_le32(((0x70 << 24) | (sense_key << 8)), 2109 (&ctio->u.status1.sense_data)[0]); 2110 /* Additional sense length */ 2111 put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]); 2112 /* ASC and ASCQ */ 2113 put_unaligned_le32(((asc << 24) | (ascq << 16)), 2114 (&ctio->u.status1.sense_data)[3]); 2115 2116 /* Memory Barrier */ 2117 wmb(); 2118 2119 if (qpair->reqq_start_iocbs) 2120 qpair->reqq_start_iocbs(qpair); 2121 else 2122 qla2x00_start_iocbs(vha, qpair->req); 2123 2124 out: 2125 return; 2126 } 2127 2128 /* callback from target fabric module code */ 2129 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2130 { 2131 struct scsi_qla_host *vha = mcmd->sess->vha; 2132 struct qla_hw_data *ha = vha->hw; 2133 unsigned long flags; 2134 struct qla_qpair *qpair = mcmd->qpair; 2135 2136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2137 "TM response mcmd (%p) status %#x state %#x", 2138 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2139 2140 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2141 2142 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2143 /* 2144 * Either the port is not online or this request was from 2145 * previous life, just abort the processing. 2146 */ 2147 ql_dbg(ql_dbg_async, vha, 0xe100, 2148 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2149 vha->flags.online, qla2x00_reset_active(vha), 2150 mcmd->reset_count, qpair->chip_reset); 2151 ha->tgt.tgt_ops->free_mcmd(mcmd); 2152 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2153 return; 2154 } 2155 2156 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { 2157 if (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2158 ELS_LOGO || 2159 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2160 ELS_PRLO || 2161 mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode == 2162 ELS_TPRLO) { 2163 ql_dbg(ql_dbg_disc, vha, 0x2106, 2164 "TM response logo %phC status %#x state %#x", 2165 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2166 mcmd->flags); 2167 qlt_schedule_sess_for_deletion_lock(mcmd->sess); 2168 } else { 2169 qlt_send_notify_ack(vha->hw->base_qpair, 2170 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2171 } 2172 } else { 2173 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) 2174 qlt_24xx_send_abts_resp(qpair, &mcmd->orig_iocb.abts, 2175 mcmd->fc_tm_rsp, false); 2176 else 2177 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2178 mcmd->fc_tm_rsp); 2179 } 2180 /* 2181 * Make the callback for ->free_mcmd() to queue_work() and invoke 2182 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2183 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2184 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2185 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2186 * qlt_xmit_tm_rsp() returns here.. 2187 */ 2188 ha->tgt.tgt_ops->free_mcmd(mcmd); 2189 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2190 } 2191 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2192 2193 /* No locks */ 2194 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2195 { 2196 struct qla_tgt_cmd *cmd = prm->cmd; 2197 2198 BUG_ON(cmd->sg_cnt == 0); 2199 2200 prm->sg = (struct scatterlist *)cmd->sg; 2201 prm->seg_cnt = pci_map_sg(cmd->qpair->pdev, cmd->sg, 2202 cmd->sg_cnt, cmd->dma_data_direction); 2203 if (unlikely(prm->seg_cnt == 0)) 2204 goto out_err; 2205 2206 prm->cmd->sg_mapped = 1; 2207 2208 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2209 /* 2210 * If greater than four sg entries then we need to allocate 2211 * the continuation entries 2212 */ 2213 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2214 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2215 QLA_TGT_DATASEGS_PER_CMD_24XX, 2216 QLA_TGT_DATASEGS_PER_CONT_24XX); 2217 } else { 2218 /* DIF */ 2219 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2220 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2221 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2222 prm->tot_dsds = prm->seg_cnt; 2223 } else 2224 prm->tot_dsds = prm->seg_cnt; 2225 2226 if (cmd->prot_sg_cnt) { 2227 prm->prot_sg = cmd->prot_sg; 2228 prm->prot_seg_cnt = pci_map_sg(cmd->qpair->pdev, 2229 cmd->prot_sg, cmd->prot_sg_cnt, 2230 cmd->dma_data_direction); 2231 if (unlikely(prm->prot_seg_cnt == 0)) 2232 goto out_err; 2233 2234 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2235 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2236 /* Dif Bundling not support here */ 2237 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2238 cmd->blk_sz); 2239 prm->tot_dsds += prm->prot_seg_cnt; 2240 } else 2241 prm->tot_dsds += prm->prot_seg_cnt; 2242 } 2243 } 2244 2245 return 0; 2246 2247 out_err: 2248 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2249 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2250 0, prm->cmd->sg_cnt); 2251 return -1; 2252 } 2253 2254 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2255 { 2256 struct qla_hw_data *ha; 2257 struct qla_qpair *qpair; 2258 if (!cmd->sg_mapped) 2259 return; 2260 2261 qpair = cmd->qpair; 2262 2263 pci_unmap_sg(qpair->pdev, cmd->sg, cmd->sg_cnt, 2264 cmd->dma_data_direction); 2265 cmd->sg_mapped = 0; 2266 2267 if (cmd->prot_sg_cnt) 2268 pci_unmap_sg(qpair->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 2269 cmd->dma_data_direction); 2270 2271 if (!cmd->ctx) 2272 return; 2273 ha = vha->hw; 2274 if (cmd->ctx_dsd_alloced) 2275 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2276 2277 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2278 } 2279 2280 static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2281 uint32_t req_cnt) 2282 { 2283 uint32_t cnt; 2284 struct req_que *req = qpair->req; 2285 2286 if (req->cnt < (req_cnt + 2)) { 2287 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2288 RD_REG_DWORD_RELAXED(req->req_q_out)); 2289 2290 if (req->ring_index < cnt) 2291 req->cnt = cnt - req->ring_index; 2292 else 2293 req->cnt = req->length - (req->ring_index - cnt); 2294 2295 if (unlikely(req->cnt < (req_cnt + 2))) 2296 return -EAGAIN; 2297 } 2298 2299 req->cnt -= req_cnt; 2300 2301 return 0; 2302 } 2303 2304 /* 2305 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2306 */ 2307 static inline void *qlt_get_req_pkt(struct req_que *req) 2308 { 2309 /* Adjust ring index. */ 2310 req->ring_index++; 2311 if (req->ring_index == req->length) { 2312 req->ring_index = 0; 2313 req->ring_ptr = req->ring; 2314 } else { 2315 req->ring_ptr++; 2316 } 2317 return (cont_entry_t *)req->ring_ptr; 2318 } 2319 2320 /* ha->hardware_lock supposed to be held on entry */ 2321 static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2322 { 2323 uint32_t h; 2324 int index; 2325 uint8_t found = 0; 2326 struct req_que *req = qpair->req; 2327 2328 h = req->current_outstanding_cmd; 2329 2330 for (index = 1; index < req->num_outstanding_cmds; index++) { 2331 h++; 2332 if (h == req->num_outstanding_cmds) 2333 h = 1; 2334 2335 if (h == QLA_TGT_SKIP_HANDLE) 2336 continue; 2337 2338 if (!req->outstanding_cmds[h]) { 2339 found = 1; 2340 break; 2341 } 2342 } 2343 2344 if (found) { 2345 req->current_outstanding_cmd = h; 2346 } else { 2347 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2348 "qla_target(%d): Ran out of empty cmd slots\n", 2349 qpair->vha->vp_idx); 2350 h = QLA_TGT_NULL_HANDLE; 2351 } 2352 2353 return h; 2354 } 2355 2356 /* ha->hardware_lock supposed to be held on entry */ 2357 static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2358 struct qla_tgt_prm *prm) 2359 { 2360 uint32_t h; 2361 struct ctio7_to_24xx *pkt; 2362 struct atio_from_isp *atio = &prm->cmd->atio; 2363 uint16_t temp; 2364 2365 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2366 prm->pkt = pkt; 2367 memset(pkt, 0, sizeof(*pkt)); 2368 2369 pkt->entry_type = CTIO_TYPE7; 2370 pkt->entry_count = (uint8_t)prm->req_cnt; 2371 pkt->vp_index = prm->cmd->vp_idx; 2372 2373 h = qlt_make_handle(qpair); 2374 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2375 /* 2376 * CTIO type 7 from the firmware doesn't provide a way to 2377 * know the initiator's LOOP ID, hence we can't find 2378 * the session and, so, the command. 2379 */ 2380 return -EAGAIN; 2381 } else 2382 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2383 2384 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2385 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2386 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2387 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2388 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2389 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2390 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2391 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2392 temp = atio->u.isp24.attr << 9; 2393 pkt->u.status0.flags |= cpu_to_le16(temp); 2394 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2395 pkt->u.status0.ox_id = cpu_to_le16(temp); 2396 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2397 2398 return 0; 2399 } 2400 2401 /* 2402 * ha->hardware_lock supposed to be held on entry. We have already made sure 2403 * that there is sufficient amount of request entries to not drop it. 2404 */ 2405 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2406 { 2407 int cnt; 2408 uint32_t *dword_ptr; 2409 2410 /* Build continuation packets */ 2411 while (prm->seg_cnt > 0) { 2412 cont_a64_entry_t *cont_pkt64 = 2413 (cont_a64_entry_t *)qlt_get_req_pkt( 2414 prm->cmd->qpair->req); 2415 2416 /* 2417 * Make sure that from cont_pkt64 none of 2418 * 64-bit specific fields used for 32-bit 2419 * addressing. Cast to (cont_entry_t *) for 2420 * that. 2421 */ 2422 2423 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2424 2425 cont_pkt64->entry_count = 1; 2426 cont_pkt64->sys_define = 0; 2427 2428 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2429 dword_ptr = (uint32_t *)&cont_pkt64->dseg_0_address; 2430 2431 /* Load continuation entry data segments */ 2432 for (cnt = 0; 2433 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2434 cnt++, prm->seg_cnt--) { 2435 *dword_ptr++ = 2436 cpu_to_le32(pci_dma_lo32 2437 (sg_dma_address(prm->sg))); 2438 *dword_ptr++ = cpu_to_le32(pci_dma_hi32 2439 (sg_dma_address(prm->sg))); 2440 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2441 2442 prm->sg = sg_next(prm->sg); 2443 } 2444 } 2445 } 2446 2447 /* 2448 * ha->hardware_lock supposed to be held on entry. We have already made sure 2449 * that there is sufficient amount of request entries to not drop it. 2450 */ 2451 static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2452 { 2453 int cnt; 2454 uint32_t *dword_ptr; 2455 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2456 2457 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2458 2459 /* Setup packet address segment pointer */ 2460 dword_ptr = pkt24->u.status0.dseg_0_address; 2461 2462 /* Set total data segment count */ 2463 if (prm->seg_cnt) 2464 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2465 2466 if (prm->seg_cnt == 0) { 2467 /* No data transfer */ 2468 *dword_ptr++ = 0; 2469 *dword_ptr = 0; 2470 return; 2471 } 2472 2473 /* If scatter gather */ 2474 2475 /* Load command entry data segments */ 2476 for (cnt = 0; 2477 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2478 cnt++, prm->seg_cnt--) { 2479 *dword_ptr++ = 2480 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 2481 2482 *dword_ptr++ = cpu_to_le32(pci_dma_hi32( 2483 sg_dma_address(prm->sg))); 2484 2485 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2486 2487 prm->sg = sg_next(prm->sg); 2488 } 2489 2490 qlt_load_cont_data_segments(prm); 2491 } 2492 2493 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2494 { 2495 return cmd->bufflen > 0; 2496 } 2497 2498 static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2499 { 2500 struct qla_tgt_cmd *cmd; 2501 struct scsi_qla_host *vha; 2502 2503 /* asc 0x10=dif error */ 2504 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2505 cmd = prm->cmd; 2506 vha = cmd->vha; 2507 /* ASCQ */ 2508 switch (prm->sense_buffer[13]) { 2509 case 1: 2510 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2511 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2512 "se_cmd=%p tag[%x]", 2513 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2514 cmd->atio.u.isp24.exchange_addr); 2515 break; 2516 case 2: 2517 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2518 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2519 "se_cmd=%p tag[%x]", 2520 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2521 cmd->atio.u.isp24.exchange_addr); 2522 break; 2523 case 3: 2524 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2525 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2526 "se_cmd=%p tag[%x]", 2527 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2528 cmd->atio.u.isp24.exchange_addr); 2529 break; 2530 default: 2531 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2532 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2533 "se_cmd=%p tag[%x]", 2534 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2535 cmd->atio.u.isp24.exchange_addr); 2536 break; 2537 } 2538 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2539 } 2540 } 2541 2542 /* 2543 * Called without ha->hardware_lock held 2544 */ 2545 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2546 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2547 uint32_t *full_req_cnt) 2548 { 2549 struct se_cmd *se_cmd = &cmd->se_cmd; 2550 struct qla_qpair *qpair = cmd->qpair; 2551 2552 prm->cmd = cmd; 2553 prm->tgt = cmd->tgt; 2554 prm->pkt = NULL; 2555 prm->rq_result = scsi_status; 2556 prm->sense_buffer = &cmd->sense_buffer[0]; 2557 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2558 prm->sg = NULL; 2559 prm->seg_cnt = -1; 2560 prm->req_cnt = 1; 2561 prm->residual = 0; 2562 prm->add_status_pkt = 0; 2563 prm->prot_sg = NULL; 2564 prm->prot_seg_cnt = 0; 2565 prm->tot_dsds = 0; 2566 2567 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2568 if (qlt_pci_map_calc_cnt(prm) != 0) 2569 return -EAGAIN; 2570 } 2571 2572 *full_req_cnt = prm->req_cnt; 2573 2574 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2575 prm->residual = se_cmd->residual_count; 2576 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2577 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2578 prm->residual, se_cmd->tag, 2579 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2580 cmd->bufflen, prm->rq_result); 2581 prm->rq_result |= SS_RESIDUAL_UNDER; 2582 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2583 prm->residual = se_cmd->residual_count; 2584 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2585 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2586 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2587 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2588 prm->rq_result |= SS_RESIDUAL_OVER; 2589 } 2590 2591 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2592 /* 2593 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2594 * ignored in *xmit_response() below 2595 */ 2596 if (qlt_has_data(cmd)) { 2597 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2598 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2599 (prm->rq_result != 0))) { 2600 prm->add_status_pkt = 1; 2601 (*full_req_cnt)++; 2602 } 2603 } 2604 } 2605 2606 return 0; 2607 } 2608 2609 static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2610 int sending_sense) 2611 { 2612 if (cmd->qpair->enable_class_2) 2613 return 0; 2614 2615 if (sending_sense) 2616 return cmd->conf_compl_supported; 2617 else 2618 return cmd->qpair->enable_explicit_conf && 2619 cmd->conf_compl_supported; 2620 } 2621 2622 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2623 struct qla_tgt_prm *prm) 2624 { 2625 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2626 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2627 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2628 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2629 ctio->u.status0.flags |= cpu_to_le16( 2630 CTIO7_FLAGS_EXPLICIT_CONFORM | 2631 CTIO7_FLAGS_CONFORM_REQ); 2632 } 2633 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2634 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2635 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2636 int i; 2637 2638 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2639 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2640 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2641 "Skipping EXPLICIT_CONFORM and " 2642 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2643 "non GOOD status\n"); 2644 goto skip_explict_conf; 2645 } 2646 ctio->u.status1.flags |= cpu_to_le16( 2647 CTIO7_FLAGS_EXPLICIT_CONFORM | 2648 CTIO7_FLAGS_CONFORM_REQ); 2649 } 2650 skip_explict_conf: 2651 ctio->u.status1.flags &= 2652 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2653 ctio->u.status1.flags |= 2654 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2655 ctio->u.status1.scsi_status |= 2656 cpu_to_le16(SS_SENSE_LEN_VALID); 2657 ctio->u.status1.sense_length = 2658 cpu_to_le16(prm->sense_buffer_len); 2659 for (i = 0; i < prm->sense_buffer_len/4; i++) 2660 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2661 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2662 2663 qlt_print_dif_err(prm); 2664 2665 } else { 2666 ctio->u.status1.flags &= 2667 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2668 ctio->u.status1.flags |= 2669 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2670 ctio->u.status1.sense_length = 0; 2671 memset(ctio->u.status1.sense_data, 0, 2672 sizeof(ctio->u.status1.sense_data)); 2673 } 2674 2675 /* Sense with len > 24, is it possible ??? */ 2676 } 2677 2678 static inline int 2679 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2680 { 2681 switch (se_cmd->prot_op) { 2682 case TARGET_PROT_DOUT_INSERT: 2683 case TARGET_PROT_DIN_STRIP: 2684 if (ql2xenablehba_err_chk >= 1) 2685 return 1; 2686 break; 2687 case TARGET_PROT_DOUT_PASS: 2688 case TARGET_PROT_DIN_PASS: 2689 if (ql2xenablehba_err_chk >= 2) 2690 return 1; 2691 break; 2692 case TARGET_PROT_DIN_INSERT: 2693 case TARGET_PROT_DOUT_STRIP: 2694 return 1; 2695 default: 2696 break; 2697 } 2698 return 0; 2699 } 2700 2701 static inline int 2702 qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2703 { 2704 switch (se_cmd->prot_op) { 2705 case TARGET_PROT_DIN_INSERT: 2706 case TARGET_PROT_DOUT_INSERT: 2707 case TARGET_PROT_DIN_STRIP: 2708 case TARGET_PROT_DOUT_STRIP: 2709 case TARGET_PROT_DIN_PASS: 2710 case TARGET_PROT_DOUT_PASS: 2711 return 1; 2712 default: 2713 return 0; 2714 } 2715 return 0; 2716 } 2717 2718 /* 2719 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2720 */ 2721 static void 2722 qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2723 uint16_t *pfw_prot_opts) 2724 { 2725 struct se_cmd *se_cmd = &cmd->se_cmd; 2726 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2727 scsi_qla_host_t *vha = cmd->tgt->vha; 2728 struct qla_hw_data *ha = vha->hw; 2729 uint32_t t32 = 0; 2730 2731 /* 2732 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2733 * have been immplemented by TCM, before AppTag is avail. 2734 * Look for modesense_handlers[] 2735 */ 2736 ctx->app_tag = 0; 2737 ctx->app_tag_mask[0] = 0x0; 2738 ctx->app_tag_mask[1] = 0x0; 2739 2740 if (IS_PI_UNINIT_CAPABLE(ha)) { 2741 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2742 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2743 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2744 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2745 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2746 } 2747 2748 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2749 2750 switch (se_cmd->prot_type) { 2751 case TARGET_DIF_TYPE0_PROT: 2752 /* 2753 * No check for ql2xenablehba_err_chk, as it 2754 * would be an I/O error if hba tag generation 2755 * is not done. 2756 */ 2757 ctx->ref_tag = cpu_to_le32(lba); 2758 /* enable ALL bytes of the ref tag */ 2759 ctx->ref_tag_mask[0] = 0xff; 2760 ctx->ref_tag_mask[1] = 0xff; 2761 ctx->ref_tag_mask[2] = 0xff; 2762 ctx->ref_tag_mask[3] = 0xff; 2763 break; 2764 case TARGET_DIF_TYPE1_PROT: 2765 /* 2766 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2767 * REF tag, and 16 bit app tag. 2768 */ 2769 ctx->ref_tag = cpu_to_le32(lba); 2770 if (!qla_tgt_ref_mask_check(se_cmd) || 2771 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2772 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2773 break; 2774 } 2775 /* enable ALL bytes of the ref tag */ 2776 ctx->ref_tag_mask[0] = 0xff; 2777 ctx->ref_tag_mask[1] = 0xff; 2778 ctx->ref_tag_mask[2] = 0xff; 2779 ctx->ref_tag_mask[3] = 0xff; 2780 break; 2781 case TARGET_DIF_TYPE2_PROT: 2782 /* 2783 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2784 * tag has to match LBA in CDB + N 2785 */ 2786 ctx->ref_tag = cpu_to_le32(lba); 2787 if (!qla_tgt_ref_mask_check(se_cmd) || 2788 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2789 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2790 break; 2791 } 2792 /* enable ALL bytes of the ref tag */ 2793 ctx->ref_tag_mask[0] = 0xff; 2794 ctx->ref_tag_mask[1] = 0xff; 2795 ctx->ref_tag_mask[2] = 0xff; 2796 ctx->ref_tag_mask[3] = 0xff; 2797 break; 2798 case TARGET_DIF_TYPE3_PROT: 2799 /* For TYPE 3 protection: 16 bit GUARD only */ 2800 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2801 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2802 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2803 break; 2804 } 2805 } 2806 2807 static inline int 2808 qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2809 { 2810 uint32_t *cur_dsd; 2811 uint32_t transfer_length = 0; 2812 uint32_t data_bytes; 2813 uint32_t dif_bytes; 2814 uint8_t bundling = 1; 2815 uint8_t *clr_ptr; 2816 struct crc_context *crc_ctx_pkt = NULL; 2817 struct qla_hw_data *ha; 2818 struct ctio_crc2_to_fw *pkt; 2819 dma_addr_t crc_ctx_dma; 2820 uint16_t fw_prot_opts = 0; 2821 struct qla_tgt_cmd *cmd = prm->cmd; 2822 struct se_cmd *se_cmd = &cmd->se_cmd; 2823 uint32_t h; 2824 struct atio_from_isp *atio = &prm->cmd->atio; 2825 struct qla_tc_param tc; 2826 uint16_t t16; 2827 scsi_qla_host_t *vha = cmd->vha; 2828 2829 ha = vha->hw; 2830 2831 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 2832 prm->pkt = pkt; 2833 memset(pkt, 0, sizeof(*pkt)); 2834 2835 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 2836 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2837 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2838 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2839 2840 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2841 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2842 bundling = 0; 2843 2844 /* Compute dif len and adjust data len to incude protection */ 2845 data_bytes = cmd->bufflen; 2846 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2847 2848 switch (se_cmd->prot_op) { 2849 case TARGET_PROT_DIN_INSERT: 2850 case TARGET_PROT_DOUT_STRIP: 2851 transfer_length = data_bytes; 2852 if (cmd->prot_sg_cnt) 2853 data_bytes += dif_bytes; 2854 break; 2855 case TARGET_PROT_DIN_STRIP: 2856 case TARGET_PROT_DOUT_INSERT: 2857 case TARGET_PROT_DIN_PASS: 2858 case TARGET_PROT_DOUT_PASS: 2859 transfer_length = data_bytes + dif_bytes; 2860 break; 2861 default: 2862 BUG(); 2863 break; 2864 } 2865 2866 if (!qlt_hba_err_chk_enabled(se_cmd)) 2867 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2868 /* HBA error checking enabled */ 2869 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2870 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2871 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2872 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 2873 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2874 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2875 } 2876 2877 switch (se_cmd->prot_op) { 2878 case TARGET_PROT_DIN_INSERT: 2879 case TARGET_PROT_DOUT_INSERT: 2880 fw_prot_opts |= PO_MODE_DIF_INSERT; 2881 break; 2882 case TARGET_PROT_DIN_STRIP: 2883 case TARGET_PROT_DOUT_STRIP: 2884 fw_prot_opts |= PO_MODE_DIF_REMOVE; 2885 break; 2886 case TARGET_PROT_DIN_PASS: 2887 case TARGET_PROT_DOUT_PASS: 2888 fw_prot_opts |= PO_MODE_DIF_PASS; 2889 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 2890 break; 2891 default:/* Normal Request */ 2892 fw_prot_opts |= PO_MODE_DIF_PASS; 2893 break; 2894 } 2895 2896 /* ---- PKT ---- */ 2897 /* Update entry type to indicate Command Type CRC_2 IOCB */ 2898 pkt->entry_type = CTIO_CRC2; 2899 pkt->entry_count = 1; 2900 pkt->vp_index = cmd->vp_idx; 2901 2902 h = qlt_make_handle(qpair); 2903 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2904 /* 2905 * CTIO type 7 from the firmware doesn't provide a way to 2906 * know the initiator's LOOP ID, hence we can't find 2907 * the session and, so, the command. 2908 */ 2909 return -EAGAIN; 2910 } else 2911 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2912 2913 pkt->handle = MAKE_HANDLE(qpair->req->id, h); 2914 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2915 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2916 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2917 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2918 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2919 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2920 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2921 2922 /* silence compile warning */ 2923 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2924 pkt->ox_id = cpu_to_le16(t16); 2925 2926 t16 = (atio->u.isp24.attr << 9); 2927 pkt->flags |= cpu_to_le16(t16); 2928 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 2929 2930 /* Set transfer direction */ 2931 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2932 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 2933 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2934 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 2935 2936 pkt->dseg_count = prm->tot_dsds; 2937 /* Fibre channel byte count */ 2938 pkt->transfer_length = cpu_to_le32(transfer_length); 2939 2940 /* ----- CRC context -------- */ 2941 2942 /* Allocate CRC context from global pool */ 2943 crc_ctx_pkt = cmd->ctx = 2944 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 2945 2946 if (!crc_ctx_pkt) 2947 goto crc_queuing_error; 2948 2949 /* Zero out CTX area. */ 2950 clr_ptr = (uint8_t *)crc_ctx_pkt; 2951 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 2952 2953 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 2954 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 2955 2956 /* Set handle */ 2957 crc_ctx_pkt->handle = pkt->handle; 2958 2959 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 2960 2961 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 2962 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 2963 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 2964 2965 if (!bundling) { 2966 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 2967 } else { 2968 /* 2969 * Configure Bundling if we need to fetch interlaving 2970 * protection PCI accesses 2971 */ 2972 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 2973 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 2974 crc_ctx_pkt->u.bundling.dseg_count = 2975 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 2976 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 2977 } 2978 2979 /* Finish the common fields of CRC pkt */ 2980 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 2981 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 2982 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 2983 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 2984 2985 memset((uint8_t *)&tc, 0 , sizeof(tc)); 2986 tc.vha = vha; 2987 tc.blk_sz = cmd->blk_sz; 2988 tc.bufflen = cmd->bufflen; 2989 tc.sg = cmd->sg; 2990 tc.prot_sg = cmd->prot_sg; 2991 tc.ctx = crc_ctx_pkt; 2992 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 2993 2994 /* Walks data segments */ 2995 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 2996 2997 if (!bundling && prm->prot_seg_cnt) { 2998 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 2999 prm->tot_dsds, &tc)) 3000 goto crc_queuing_error; 3001 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3002 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3003 goto crc_queuing_error; 3004 3005 if (bundling && prm->prot_seg_cnt) { 3006 /* Walks dif segments */ 3007 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3008 3009 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 3010 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3011 prm->prot_seg_cnt, &tc)) 3012 goto crc_queuing_error; 3013 } 3014 return QLA_SUCCESS; 3015 3016 crc_queuing_error: 3017 /* Cleanup will be performed by the caller */ 3018 qpair->req->outstanding_cmds[h] = NULL; 3019 3020 return QLA_FUNCTION_FAILED; 3021 } 3022 3023 /* 3024 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3025 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3026 */ 3027 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3028 uint8_t scsi_status) 3029 { 3030 struct scsi_qla_host *vha = cmd->vha; 3031 struct qla_qpair *qpair = cmd->qpair; 3032 struct ctio7_to_24xx *pkt; 3033 struct qla_tgt_prm prm; 3034 uint32_t full_req_cnt = 0; 3035 unsigned long flags = 0; 3036 int res; 3037 3038 if (cmd->sess && cmd->sess->deleted) { 3039 cmd->state = QLA_TGT_STATE_PROCESSED; 3040 if (cmd->sess->logout_completed) 3041 /* no need to terminate. FW already freed exchange. */ 3042 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3043 else 3044 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 0, 0); 3045 return 0; 3046 } 3047 3048 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3049 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3050 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3051 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3052 &cmd->se_cmd, qpair->id); 3053 3054 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3055 &full_req_cnt); 3056 if (unlikely(res != 0)) { 3057 return res; 3058 } 3059 3060 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3061 3062 if (xmit_type == QLA_TGT_XMIT_STATUS) 3063 qpair->tgt_counters.core_qla_snd_status++; 3064 else 3065 qpair->tgt_counters.core_qla_que_buf++; 3066 3067 if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { 3068 /* 3069 * Either the port is not online or this request was from 3070 * previous life, just abort the processing. 3071 */ 3072 cmd->state = QLA_TGT_STATE_PROCESSED; 3073 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3074 ql_dbg_qp(ql_dbg_async, qpair, 0xe101, 3075 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 3076 vha->flags.online, qla2x00_reset_active(vha), 3077 cmd->reset_count, qpair->chip_reset); 3078 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3079 return 0; 3080 } 3081 3082 /* Does F/W have an IOCBs for this request */ 3083 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3084 if (unlikely(res)) 3085 goto out_unmap_unlock; 3086 3087 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3088 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3089 else 3090 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3091 if (unlikely(res != 0)) { 3092 qpair->req->cnt += full_req_cnt; 3093 goto out_unmap_unlock; 3094 } 3095 3096 pkt = (struct ctio7_to_24xx *)prm.pkt; 3097 3098 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3099 pkt->u.status0.flags |= 3100 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3101 CTIO7_FLAGS_STATUS_MODE_0); 3102 3103 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3104 qlt_load_data_segments(&prm); 3105 3106 if (prm.add_status_pkt == 0) { 3107 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3108 pkt->u.status0.scsi_status = 3109 cpu_to_le16(prm.rq_result); 3110 pkt->u.status0.residual = 3111 cpu_to_le32(prm.residual); 3112 pkt->u.status0.flags |= cpu_to_le16( 3113 CTIO7_FLAGS_SEND_STATUS); 3114 if (qlt_need_explicit_conf(cmd, 0)) { 3115 pkt->u.status0.flags |= 3116 cpu_to_le16( 3117 CTIO7_FLAGS_EXPLICIT_CONFORM | 3118 CTIO7_FLAGS_CONFORM_REQ); 3119 } 3120 } 3121 3122 } else { 3123 /* 3124 * We have already made sure that there is sufficient 3125 * amount of request entries to not drop HW lock in 3126 * req_pkt(). 3127 */ 3128 struct ctio7_to_24xx *ctio = 3129 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3130 qpair->req); 3131 3132 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3133 "Building additional status packet 0x%p.\n", 3134 ctio); 3135 3136 /* 3137 * T10Dif: ctio_crc2_to_fw overlay ontop of 3138 * ctio7_to_24xx 3139 */ 3140 memcpy(ctio, pkt, sizeof(*ctio)); 3141 /* reset back to CTIO7 */ 3142 ctio->entry_count = 1; 3143 ctio->entry_type = CTIO_TYPE7; 3144 ctio->dseg_count = 0; 3145 ctio->u.status1.flags &= ~cpu_to_le16( 3146 CTIO7_FLAGS_DATA_IN); 3147 3148 /* Real finish is ctio_m1's finish */ 3149 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3150 pkt->u.status0.flags |= cpu_to_le16( 3151 CTIO7_FLAGS_DONT_RET_CTIO); 3152 3153 /* qlt_24xx_init_ctio_to_isp will correct 3154 * all neccessary fields that's part of CTIO7. 3155 * There should be no residual of CTIO-CRC2 data. 3156 */ 3157 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3158 &prm); 3159 } 3160 } else 3161 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3162 3163 3164 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3165 cmd->cmd_sent_to_fw = 1; 3166 3167 /* Memory Barrier */ 3168 wmb(); 3169 if (qpair->reqq_start_iocbs) 3170 qpair->reqq_start_iocbs(qpair); 3171 else 3172 qla2x00_start_iocbs(vha, qpair->req); 3173 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3174 3175 return 0; 3176 3177 out_unmap_unlock: 3178 qlt_unmap_sg(vha, cmd); 3179 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3180 3181 return res; 3182 } 3183 EXPORT_SYMBOL(qlt_xmit_response); 3184 3185 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3186 { 3187 struct ctio7_to_24xx *pkt; 3188 struct scsi_qla_host *vha = cmd->vha; 3189 struct qla_tgt *tgt = cmd->tgt; 3190 struct qla_tgt_prm prm; 3191 unsigned long flags = 0; 3192 int res = 0; 3193 struct qla_qpair *qpair = cmd->qpair; 3194 3195 memset(&prm, 0, sizeof(prm)); 3196 prm.cmd = cmd; 3197 prm.tgt = tgt; 3198 prm.sg = NULL; 3199 prm.req_cnt = 1; 3200 3201 /* Calculate number of entries and segments required */ 3202 if (qlt_pci_map_calc_cnt(&prm) != 0) 3203 return -EAGAIN; 3204 3205 if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || 3206 (cmd->sess && cmd->sess->deleted)) { 3207 /* 3208 * Either the port is not online or this request was from 3209 * previous life, just abort the processing. 3210 */ 3211 cmd->state = QLA_TGT_STATE_NEED_DATA; 3212 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 3213 ql_dbg_qp(ql_dbg_async, qpair, 0xe102, 3214 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 3215 vha->flags.online, qla2x00_reset_active(vha), 3216 cmd->reset_count, qpair->chip_reset); 3217 return 0; 3218 } 3219 3220 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3221 /* Does F/W have an IOCBs for this request */ 3222 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3223 if (res != 0) 3224 goto out_unlock_free_unmap; 3225 if (cmd->se_cmd.prot_op) 3226 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3227 else 3228 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3229 3230 if (unlikely(res != 0)) { 3231 qpair->req->cnt += prm.req_cnt; 3232 goto out_unlock_free_unmap; 3233 } 3234 3235 pkt = (struct ctio7_to_24xx *)prm.pkt; 3236 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3237 CTIO7_FLAGS_STATUS_MODE_0); 3238 3239 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3240 qlt_load_data_segments(&prm); 3241 3242 cmd->state = QLA_TGT_STATE_NEED_DATA; 3243 cmd->cmd_sent_to_fw = 1; 3244 3245 /* Memory Barrier */ 3246 wmb(); 3247 if (qpair->reqq_start_iocbs) 3248 qpair->reqq_start_iocbs(qpair); 3249 else 3250 qla2x00_start_iocbs(vha, qpair->req); 3251 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3252 3253 return res; 3254 3255 out_unlock_free_unmap: 3256 qlt_unmap_sg(vha, cmd); 3257 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3258 3259 return res; 3260 } 3261 EXPORT_SYMBOL(qlt_rdy_to_xfer); 3262 3263 3264 /* 3265 * it is assumed either hardware_lock or qpair lock is held. 3266 */ 3267 static void 3268 qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3269 struct ctio_crc_from_fw *sts) 3270 { 3271 uint8_t *ap = &sts->actual_dif[0]; 3272 uint8_t *ep = &sts->expected_dif[0]; 3273 uint64_t lba = cmd->se_cmd.t_task_lba; 3274 uint8_t scsi_status, sense_key, asc, ascq; 3275 unsigned long flags; 3276 struct scsi_qla_host *vha = cmd->vha; 3277 3278 cmd->trc_flags |= TRC_DIF_ERR; 3279 3280 cmd->a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 3281 cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 3282 cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 3283 3284 cmd->e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 3285 cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 3286 cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 3287 3288 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3289 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3290 3291 scsi_status = sense_key = asc = ascq = 0; 3292 3293 /* check appl tag */ 3294 if (cmd->e_app_tag != cmd->a_app_tag) { 3295 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3296 "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]", 3297 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3298 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3299 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3300 cmd->atio.u.isp24.fcp_hdr.ox_id); 3301 3302 cmd->dif_err_code = DIF_ERR_APP; 3303 scsi_status = SAM_STAT_CHECK_CONDITION; 3304 sense_key = ABORTED_COMMAND; 3305 asc = 0x10; 3306 ascq = 0x2; 3307 } 3308 3309 /* check ref tag */ 3310 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3311 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3312 "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] ", 3313 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3314 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3315 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3316 cmd->atio.u.isp24.fcp_hdr.ox_id); 3317 3318 cmd->dif_err_code = DIF_ERR_REF; 3319 scsi_status = SAM_STAT_CHECK_CONDITION; 3320 sense_key = ABORTED_COMMAND; 3321 asc = 0x10; 3322 ascq = 0x3; 3323 goto out; 3324 } 3325 3326 /* check guard */ 3327 if (cmd->e_guard != cmd->a_guard) { 3328 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3329 "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]", 3330 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3331 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3332 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3333 cmd->atio.u.isp24.fcp_hdr.ox_id); 3334 3335 cmd->dif_err_code = DIF_ERR_GRD; 3336 scsi_status = SAM_STAT_CHECK_CONDITION; 3337 sense_key = ABORTED_COMMAND; 3338 asc = 0x10; 3339 ascq = 0x1; 3340 } 3341 out: 3342 switch (cmd->state) { 3343 case QLA_TGT_STATE_NEED_DATA: 3344 /* handle_data will load DIF error code */ 3345 cmd->state = QLA_TGT_STATE_DATA_IN; 3346 vha->hw->tgt.tgt_ops->handle_data(cmd); 3347 break; 3348 default: 3349 spin_lock_irqsave(&cmd->cmd_lock, flags); 3350 if (cmd->aborted) { 3351 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3352 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3353 break; 3354 } 3355 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3356 3357 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3358 ascq); 3359 /* assume scsi status gets out on the wire. 3360 * Will not wait for completion. 3361 */ 3362 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3363 break; 3364 } 3365 } 3366 3367 /* If hardware_lock held on entry, might drop it, then reaquire */ 3368 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3369 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3370 struct imm_ntfy_from_isp *ntfy) 3371 { 3372 struct nack_to_isp *nack; 3373 struct qla_hw_data *ha = vha->hw; 3374 request_t *pkt; 3375 int ret = 0; 3376 3377 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3378 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3379 3380 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3381 if (pkt == NULL) { 3382 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3383 "qla_target(%d): %s failed: unable to allocate " 3384 "request packet\n", vha->vp_idx, __func__); 3385 return -ENOMEM; 3386 } 3387 3388 pkt->entry_type = NOTIFY_ACK_TYPE; 3389 pkt->entry_count = 1; 3390 pkt->handle = QLA_TGT_SKIP_HANDLE; 3391 3392 nack = (struct nack_to_isp *)pkt; 3393 nack->ox_id = ntfy->ox_id; 3394 3395 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3396 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3397 nack->u.isp24.flags = ntfy->u.isp24.flags & 3398 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3399 } 3400 3401 /* terminate */ 3402 nack->u.isp24.flags |= 3403 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3404 3405 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3406 nack->u.isp24.status = ntfy->u.isp24.status; 3407 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3408 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3409 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3410 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3411 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3412 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3413 3414 qla2x00_start_iocbs(vha, vha->req); 3415 return ret; 3416 } 3417 3418 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3419 struct imm_ntfy_from_isp *imm, int ha_locked) 3420 { 3421 unsigned long flags = 0; 3422 int rc; 3423 3424 if (ha_locked) { 3425 rc = __qlt_send_term_imm_notif(vha, imm); 3426 3427 #if 0 /* Todo */ 3428 if (rc == -ENOMEM) 3429 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3430 #else 3431 if (rc) { 3432 } 3433 #endif 3434 goto done; 3435 } 3436 3437 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3438 rc = __qlt_send_term_imm_notif(vha, imm); 3439 3440 #if 0 /* Todo */ 3441 if (rc == -ENOMEM) 3442 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3443 #endif 3444 3445 done: 3446 if (!ha_locked) 3447 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3448 } 3449 3450 /* 3451 * If hardware_lock held on entry, might drop it, then reaquire 3452 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3453 */ 3454 static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3455 struct qla_tgt_cmd *cmd, 3456 struct atio_from_isp *atio) 3457 { 3458 struct scsi_qla_host *vha = qpair->vha; 3459 struct ctio7_to_24xx *ctio24; 3460 struct qla_hw_data *ha = vha->hw; 3461 request_t *pkt; 3462 int ret = 0; 3463 uint16_t temp; 3464 3465 ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3466 3467 pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); 3468 if (pkt == NULL) { 3469 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3470 "qla_target(%d): %s failed: unable to allocate " 3471 "request packet\n", vha->vp_idx, __func__); 3472 return -ENOMEM; 3473 } 3474 3475 if (cmd != NULL) { 3476 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3477 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3478 "qla_target(%d): Terminating cmd %p with " 3479 "incorrect state %d\n", vha->vp_idx, cmd, 3480 cmd->state); 3481 } else 3482 ret = 1; 3483 } 3484 3485 qpair->tgt_counters.num_term_xchg_sent++; 3486 pkt->entry_count = 1; 3487 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3488 3489 ctio24 = (struct ctio7_to_24xx *)pkt; 3490 ctio24->entry_type = CTIO_TYPE7; 3491 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3492 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3493 ctio24->vp_index = vha->vp_idx; 3494 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3495 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3496 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3497 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3498 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3499 CTIO7_FLAGS_TERMINATE; 3500 ctio24->u.status1.flags = cpu_to_le16(temp); 3501 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3502 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3503 3504 /* Most likely, it isn't needed */ 3505 ctio24->u.status1.residual = get_unaligned((uint32_t *) 3506 &atio->u.isp24.fcp_cmnd.add_cdb[ 3507 atio->u.isp24.fcp_cmnd.add_cdb_len]); 3508 if (ctio24->u.status1.residual != 0) 3509 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 3510 3511 /* Memory Barrier */ 3512 wmb(); 3513 if (qpair->reqq_start_iocbs) 3514 qpair->reqq_start_iocbs(qpair); 3515 else 3516 qla2x00_start_iocbs(vha, qpair->req); 3517 return ret; 3518 } 3519 3520 static void qlt_send_term_exchange(struct qla_qpair *qpair, 3521 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3522 int ul_abort) 3523 { 3524 struct scsi_qla_host *vha; 3525 unsigned long flags = 0; 3526 int rc; 3527 3528 /* why use different vha? NPIV */ 3529 if (cmd) 3530 vha = cmd->vha; 3531 else 3532 vha = qpair->vha; 3533 3534 if (ha_locked) { 3535 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3536 if (rc == -ENOMEM) 3537 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3538 goto done; 3539 } 3540 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3541 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3542 if (rc == -ENOMEM) 3543 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3544 3545 done: 3546 if (cmd && !ul_abort && !cmd->aborted) { 3547 if (cmd->sg_mapped) 3548 qlt_unmap_sg(vha, cmd); 3549 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3550 } 3551 3552 if (!ha_locked) 3553 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3554 3555 return; 3556 } 3557 3558 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3559 { 3560 struct list_head free_list; 3561 struct qla_tgt_cmd *cmd, *tcmd; 3562 3563 vha->hw->tgt.leak_exchg_thresh_hold = 3564 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3565 3566 cmd = tcmd = NULL; 3567 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3568 INIT_LIST_HEAD(&free_list); 3569 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3570 3571 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3572 list_del(&cmd->cmd_list); 3573 /* This cmd was never sent to TCM. There is no need 3574 * to schedule free or call free_cmd 3575 */ 3576 qlt_free_cmd(cmd); 3577 vha->hw->tgt.num_qfull_cmds_alloc--; 3578 } 3579 } 3580 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3581 } 3582 3583 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3584 { 3585 uint32_t total_leaked; 3586 3587 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3588 3589 if (vha->hw->tgt.leak_exchg_thresh_hold && 3590 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3591 3592 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3593 "Chip reset due to exchange starvation: %d/%d.\n", 3594 total_leaked, vha->hw->cur_fw_xcb_count); 3595 3596 if (IS_P3P_TYPE(vha->hw)) 3597 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3598 else 3599 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3600 qla2xxx_wake_dpc(vha); 3601 } 3602 3603 } 3604 3605 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3606 { 3607 struct qla_tgt *tgt = cmd->tgt; 3608 struct scsi_qla_host *vha = tgt->vha; 3609 struct se_cmd *se_cmd = &cmd->se_cmd; 3610 unsigned long flags; 3611 3612 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3613 "qla_target(%d): terminating exchange for aborted cmd=%p " 3614 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3615 se_cmd->tag); 3616 3617 spin_lock_irqsave(&cmd->cmd_lock, flags); 3618 if (cmd->aborted) { 3619 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3620 /* 3621 * It's normal to see 2 calls in this path: 3622 * 1) XFER Rdy completion + CMD_T_ABORT 3623 * 2) TCM TMR - drain_state_list 3624 */ 3625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, 3626 "multiple abort. %p transport_state %x, t_state %x, " 3627 "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, 3628 cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); 3629 return EIO; 3630 } 3631 cmd->aborted = 1; 3632 cmd->trc_flags |= TRC_ABORT; 3633 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3634 3635 qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); 3636 return 0; 3637 } 3638 EXPORT_SYMBOL(qlt_abort_cmd); 3639 3640 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3641 { 3642 struct fc_port *sess = cmd->sess; 3643 3644 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3645 "%s: se_cmd[%p] ox_id %04x\n", 3646 __func__, &cmd->se_cmd, 3647 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3648 3649 BUG_ON(cmd->cmd_in_wq); 3650 3651 if (cmd->sg_mapped) 3652 qlt_unmap_sg(cmd->vha, cmd); 3653 3654 if (!cmd->q_full) 3655 qlt_decr_num_pend_cmds(cmd->vha); 3656 3657 BUG_ON(cmd->sg_mapped); 3658 cmd->jiffies_at_free = get_jiffies_64(); 3659 if (unlikely(cmd->free_sg)) 3660 kfree(cmd->sg); 3661 3662 if (!sess || !sess->se_sess) { 3663 WARN_ON(1); 3664 return; 3665 } 3666 cmd->jiffies_at_free = get_jiffies_64(); 3667 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3668 } 3669 EXPORT_SYMBOL(qlt_free_cmd); 3670 3671 /* 3672 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3673 */ 3674 static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, 3675 struct qla_tgt_cmd *cmd, uint32_t status) 3676 { 3677 int term = 0; 3678 struct scsi_qla_host *vha = qpair->vha; 3679 3680 if (cmd->se_cmd.prot_op) 3681 ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, 3682 "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " 3683 "se_cmd=%p tag[%x] op %#x/%s", 3684 cmd->lba, cmd->lba, 3685 cmd->num_blks, &cmd->se_cmd, 3686 cmd->atio.u.isp24.exchange_addr, 3687 cmd->se_cmd.prot_op, 3688 prot_op_str(cmd->se_cmd.prot_op)); 3689 3690 if (ctio != NULL) { 3691 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3692 term = !(c->flags & 3693 cpu_to_le16(OF_TERM_EXCH)); 3694 } else 3695 term = 1; 3696 3697 if (term) 3698 qlt_term_ctio_exchange(qpair, ctio, cmd, status); 3699 3700 return term; 3701 } 3702 3703 3704 /* ha->hardware_lock supposed to be held on entry */ 3705 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3706 struct rsp_que *rsp, uint32_t handle, void *ctio) 3707 { 3708 struct qla_tgt_cmd *cmd = NULL; 3709 struct req_que *req; 3710 int qid = GET_QID(handle); 3711 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 3712 3713 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 3714 return NULL; 3715 3716 if (qid == rsp->req->id) { 3717 req = rsp->req; 3718 } else if (vha->hw->req_q_map[qid]) { 3719 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 3720 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 3721 vha->vp_idx, rsp->id, handle); 3722 req = vha->hw->req_q_map[qid]; 3723 } else { 3724 return NULL; 3725 } 3726 3727 h &= QLA_CMD_HANDLE_MASK; 3728 3729 if (h != QLA_TGT_NULL_HANDLE) { 3730 if (unlikely(h >= req->num_outstanding_cmds)) { 3731 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3732 "qla_target(%d): Wrong handle %x received\n", 3733 vha->vp_idx, handle); 3734 return NULL; 3735 } 3736 3737 cmd = (struct qla_tgt_cmd *)req->outstanding_cmds[h]; 3738 if (unlikely(cmd == NULL)) { 3739 ql_dbg(ql_dbg_async, vha, 0xe053, 3740 "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", 3741 vha->vp_idx, handle, req->id, rsp->id); 3742 return NULL; 3743 } 3744 req->outstanding_cmds[h] = NULL; 3745 } else if (ctio != NULL) { 3746 /* We can't get loop ID from CTIO7 */ 3747 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3748 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3749 "support NULL handles\n", vha->vp_idx); 3750 return NULL; 3751 } 3752 3753 return cmd; 3754 } 3755 3756 /* hardware_lock should be held by caller. */ 3757 void 3758 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3759 { 3760 struct qla_hw_data *ha = vha->hw; 3761 3762 if (cmd->sg_mapped) 3763 qlt_unmap_sg(vha, cmd); 3764 3765 /* TODO: fix debug message type and ids. */ 3766 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3767 ql_dbg(ql_dbg_io, vha, 0xff00, 3768 "HOST-ABORT: state=PROCESSED.\n"); 3769 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3770 cmd->write_data_transferred = 0; 3771 cmd->state = QLA_TGT_STATE_DATA_IN; 3772 3773 ql_dbg(ql_dbg_io, vha, 0xff01, 3774 "HOST-ABORT: state=DATA_IN.\n"); 3775 3776 ha->tgt.tgt_ops->handle_data(cmd); 3777 return; 3778 } else { 3779 ql_dbg(ql_dbg_io, vha, 0xff03, 3780 "HOST-ABORT: state=BAD(%d).\n", 3781 cmd->state); 3782 dump_stack(); 3783 } 3784 3785 cmd->trc_flags |= TRC_FLUSH; 3786 ha->tgt.tgt_ops->free_cmd(cmd); 3787 } 3788 3789 /* 3790 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3791 */ 3792 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 3793 struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) 3794 { 3795 struct qla_hw_data *ha = vha->hw; 3796 struct se_cmd *se_cmd; 3797 struct qla_tgt_cmd *cmd; 3798 struct qla_qpair *qpair = rsp->qpair; 3799 3800 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3801 /* That could happen only in case of an error/reset/abort */ 3802 if (status != CTIO_SUCCESS) { 3803 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3804 "Intermediate CTIO received" 3805 " (status %x)\n", status); 3806 } 3807 return; 3808 } 3809 3810 cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); 3811 if (cmd == NULL) 3812 return; 3813 3814 se_cmd = &cmd->se_cmd; 3815 cmd->cmd_sent_to_fw = 0; 3816 3817 qlt_unmap_sg(vha, cmd); 3818 3819 if (unlikely(status != CTIO_SUCCESS)) { 3820 switch (status & 0xFFFF) { 3821 case CTIO_LIP_RESET: 3822 case CTIO_TARGET_RESET: 3823 case CTIO_ABORTED: 3824 /* driver request abort via Terminate exchange */ 3825 case CTIO_TIMEOUT: 3826 case CTIO_INVALID_RX_ID: 3827 /* They are OK */ 3828 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3829 "qla_target(%d): CTIO with " 3830 "status %#x received, state %x, se_cmd %p, " 3831 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3832 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3833 status, cmd->state, se_cmd); 3834 break; 3835 3836 case CTIO_PORT_LOGGED_OUT: 3837 case CTIO_PORT_UNAVAILABLE: 3838 { 3839 int logged_out = 3840 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3841 3842 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3843 "qla_target(%d): CTIO with %s status %x " 3844 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3845 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3846 status, cmd->state, se_cmd); 3847 3848 if (logged_out && cmd->sess) { 3849 /* 3850 * Session is already logged out, but we need 3851 * to notify initiator, who's not aware of this 3852 */ 3853 cmd->sess->logout_on_delete = 0; 3854 cmd->sess->send_els_logo = 1; 3855 ql_dbg(ql_dbg_disc, vha, 0x20f8, 3856 "%s %d %8phC post del sess\n", 3857 __func__, __LINE__, cmd->sess->port_name); 3858 3859 qlt_schedule_sess_for_deletion_lock(cmd->sess); 3860 } 3861 break; 3862 } 3863 case CTIO_DIF_ERROR: { 3864 struct ctio_crc_from_fw *crc = 3865 (struct ctio_crc_from_fw *)ctio; 3866 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3867 "qla_target(%d): CTIO with DIF_ERROR status %x " 3868 "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " 3869 "expect_dif[0x%llx]\n", 3870 vha->vp_idx, status, cmd->state, se_cmd, 3871 *((u64 *)&crc->actual_dif[0]), 3872 *((u64 *)&crc->expected_dif[0])); 3873 3874 qlt_handle_dif_error(qpair, cmd, ctio); 3875 return; 3876 } 3877 default: 3878 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3879 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3880 vha->vp_idx, status, cmd->state, se_cmd); 3881 break; 3882 } 3883 3884 3885 /* "cmd->aborted" means 3886 * cmd is already aborted/terminated, we don't 3887 * need to terminate again. The exchange is already 3888 * cleaned up/freed at FW level. Just cleanup at driver 3889 * level. 3890 */ 3891 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 3892 (!cmd->aborted)) { 3893 cmd->trc_flags |= TRC_CTIO_ERR; 3894 if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) 3895 return; 3896 } 3897 } 3898 3899 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3900 cmd->trc_flags |= TRC_CTIO_DONE; 3901 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3902 cmd->state = QLA_TGT_STATE_DATA_IN; 3903 3904 if (status == CTIO_SUCCESS) 3905 cmd->write_data_transferred = 1; 3906 3907 ha->tgt.tgt_ops->handle_data(cmd); 3908 return; 3909 } else if (cmd->aborted) { 3910 cmd->trc_flags |= TRC_CTIO_ABORTED; 3911 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 3912 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 3913 } else { 3914 cmd->trc_flags |= TRC_CTIO_STRANGE; 3915 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 3916 "qla_target(%d): A command in state (%d) should " 3917 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 3918 } 3919 3920 if (unlikely(status != CTIO_SUCCESS) && 3921 !cmd->aborted) { 3922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 3923 dump_stack(); 3924 } 3925 3926 ha->tgt.tgt_ops->free_cmd(cmd); 3927 } 3928 3929 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 3930 uint8_t task_codes) 3931 { 3932 int fcp_task_attr; 3933 3934 switch (task_codes) { 3935 case ATIO_SIMPLE_QUEUE: 3936 fcp_task_attr = TCM_SIMPLE_TAG; 3937 break; 3938 case ATIO_HEAD_OF_QUEUE: 3939 fcp_task_attr = TCM_HEAD_TAG; 3940 break; 3941 case ATIO_ORDERED_QUEUE: 3942 fcp_task_attr = TCM_ORDERED_TAG; 3943 break; 3944 case ATIO_ACA_QUEUE: 3945 fcp_task_attr = TCM_ACA_TAG; 3946 break; 3947 case ATIO_UNTAGGED: 3948 fcp_task_attr = TCM_SIMPLE_TAG; 3949 break; 3950 default: 3951 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 3952 "qla_target: unknown task code %x, use ORDERED instead\n", 3953 task_codes); 3954 fcp_task_attr = TCM_ORDERED_TAG; 3955 break; 3956 } 3957 3958 return fcp_task_attr; 3959 } 3960 3961 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *, 3962 uint8_t *); 3963 /* 3964 * Process context for I/O path into tcm_qla2xxx code 3965 */ 3966 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 3967 { 3968 scsi_qla_host_t *vha = cmd->vha; 3969 struct qla_hw_data *ha = vha->hw; 3970 struct fc_port *sess = cmd->sess; 3971 struct atio_from_isp *atio = &cmd->atio; 3972 unsigned char *cdb; 3973 unsigned long flags; 3974 uint32_t data_length; 3975 int ret, fcp_task_attr, data_dir, bidi = 0; 3976 struct qla_qpair *qpair = cmd->qpair; 3977 3978 cmd->cmd_in_wq = 0; 3979 cmd->trc_flags |= TRC_DO_WORK; 3980 3981 if (cmd->aborted) { 3982 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 3983 "cmd with tag %u is aborted\n", 3984 cmd->atio.u.isp24.exchange_addr); 3985 goto out_term; 3986 } 3987 3988 spin_lock_init(&cmd->cmd_lock); 3989 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 3990 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 3991 3992 if (atio->u.isp24.fcp_cmnd.rddata && 3993 atio->u.isp24.fcp_cmnd.wrdata) { 3994 bidi = 1; 3995 data_dir = DMA_TO_DEVICE; 3996 } else if (atio->u.isp24.fcp_cmnd.rddata) 3997 data_dir = DMA_FROM_DEVICE; 3998 else if (atio->u.isp24.fcp_cmnd.wrdata) 3999 data_dir = DMA_TO_DEVICE; 4000 else 4001 data_dir = DMA_NONE; 4002 4003 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4004 atio->u.isp24.fcp_cmnd.task_attr); 4005 data_length = be32_to_cpu(get_unaligned((uint32_t *) 4006 &atio->u.isp24.fcp_cmnd.add_cdb[ 4007 atio->u.isp24.fcp_cmnd.add_cdb_len])); 4008 4009 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 4010 fcp_task_attr, data_dir, bidi); 4011 if (ret != 0) 4012 goto out_term; 4013 /* 4014 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 4015 */ 4016 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4017 ha->tgt.tgt_ops->put_sess(sess); 4018 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4019 return; 4020 4021 out_term: 4022 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4023 /* 4024 * cmd has not sent to target yet, so pass NULL as the second 4025 * argument to qlt_send_term_exchange() and free the memory here. 4026 */ 4027 cmd->trc_flags |= TRC_DO_WORK_ERR; 4028 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4029 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); 4030 4031 qlt_decr_num_pend_cmds(vha); 4032 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 4033 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4034 4035 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4036 ha->tgt.tgt_ops->put_sess(sess); 4037 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4038 } 4039 4040 static void qlt_do_work(struct work_struct *work) 4041 { 4042 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4043 scsi_qla_host_t *vha = cmd->vha; 4044 unsigned long flags; 4045 4046 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4047 list_del(&cmd->cmd_list); 4048 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4049 4050 __qlt_do_work(cmd); 4051 } 4052 4053 void qlt_clr_qp_table(struct scsi_qla_host *vha) 4054 { 4055 unsigned long flags; 4056 struct qla_hw_data *ha = vha->hw; 4057 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4058 void *node; 4059 u64 key = 0; 4060 4061 ql_log(ql_log_info, vha, 0x706c, 4062 "User update Number of Active Qpairs %d\n", 4063 ha->tgt.num_act_qpairs); 4064 4065 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4066 4067 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4068 btree_remove64(&tgt->lun_qpair_map, key); 4069 4070 ha->base_qpair->lun_cnt = 0; 4071 for (key = 0; key < ha->max_qpairs; key++) 4072 if (ha->queue_pair_map[key]) 4073 ha->queue_pair_map[key]->lun_cnt = 0; 4074 4075 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4076 } 4077 4078 static void qlt_assign_qpair(struct scsi_qla_host *vha, 4079 struct qla_tgt_cmd *cmd) 4080 { 4081 struct qla_qpair *qpair, *qp; 4082 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4083 struct qla_qpair_hint *h; 4084 4085 if (vha->flags.qpairs_available) { 4086 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4087 if (unlikely(!h)) { 4088 /* spread lun to qpair ratio evently */ 4089 int lcnt = 0, rc; 4090 struct scsi_qla_host *base_vha = 4091 pci_get_drvdata(vha->hw->pdev); 4092 4093 qpair = vha->hw->base_qpair; 4094 if (qpair->lun_cnt == 0) { 4095 qpair->lun_cnt++; 4096 h = qla_qpair_to_hint(tgt, qpair); 4097 BUG_ON(!h); 4098 rc = btree_insert64(&tgt->lun_qpair_map, 4099 cmd->unpacked_lun, h, GFP_ATOMIC); 4100 if (rc) { 4101 qpair->lun_cnt--; 4102 ql_log(ql_log_info, vha, 0xd037, 4103 "Unable to insert lun %llx into lun_qpair_map\n", 4104 cmd->unpacked_lun); 4105 } 4106 goto out; 4107 } else { 4108 lcnt = qpair->lun_cnt; 4109 } 4110 4111 h = NULL; 4112 list_for_each_entry(qp, &base_vha->qp_list, 4113 qp_list_elem) { 4114 if (qp->lun_cnt == 0) { 4115 qp->lun_cnt++; 4116 h = qla_qpair_to_hint(tgt, qp); 4117 BUG_ON(!h); 4118 rc = btree_insert64(&tgt->lun_qpair_map, 4119 cmd->unpacked_lun, h, GFP_ATOMIC); 4120 if (rc) { 4121 qp->lun_cnt--; 4122 ql_log(ql_log_info, vha, 0xd038, 4123 "Unable to insert lun %llx into lun_qpair_map\n", 4124 cmd->unpacked_lun); 4125 } 4126 qpair = qp; 4127 goto out; 4128 } else { 4129 if (qp->lun_cnt < lcnt) { 4130 lcnt = qp->lun_cnt; 4131 qpair = qp; 4132 continue; 4133 } 4134 } 4135 } 4136 BUG_ON(!qpair); 4137 qpair->lun_cnt++; 4138 h = qla_qpair_to_hint(tgt, qpair); 4139 BUG_ON(!h); 4140 rc = btree_insert64(&tgt->lun_qpair_map, 4141 cmd->unpacked_lun, h, GFP_ATOMIC); 4142 if (rc) { 4143 qpair->lun_cnt--; 4144 ql_log(ql_log_info, vha, 0xd039, 4145 "Unable to insert lun %llx into lun_qpair_map\n", 4146 cmd->unpacked_lun); 4147 } 4148 } 4149 } else { 4150 h = &tgt->qphints[0]; 4151 } 4152 out: 4153 cmd->qpair = h->qpair; 4154 cmd->se_cmd.cpuid = h->cpuid; 4155 } 4156 4157 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4158 struct fc_port *sess, 4159 struct atio_from_isp *atio) 4160 { 4161 struct se_session *se_sess = sess->se_sess; 4162 struct qla_tgt_cmd *cmd; 4163 int tag; 4164 4165 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 4166 if (tag < 0) 4167 return NULL; 4168 4169 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 4170 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 4171 cmd->cmd_type = TYPE_TGT_CMD; 4172 memcpy(&cmd->atio, atio, sizeof(*atio)); 4173 cmd->state = QLA_TGT_STATE_NEW; 4174 cmd->tgt = vha->vha_tgt.qla_tgt; 4175 qlt_incr_num_pend_cmds(vha); 4176 cmd->vha = vha; 4177 cmd->se_cmd.map_tag = tag; 4178 cmd->sess = sess; 4179 cmd->loop_id = sess->loop_id; 4180 cmd->conf_compl_supported = sess->conf_compl_supported; 4181 4182 cmd->trc_flags = 0; 4183 cmd->jiffies_at_alloc = get_jiffies_64(); 4184 4185 cmd->unpacked_lun = scsilun_to_int( 4186 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4187 qlt_assign_qpair(vha, cmd); 4188 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4189 cmd->vp_idx = vha->vp_idx; 4190 4191 return cmd; 4192 } 4193 4194 static void qlt_create_sess_from_atio(struct work_struct *work) 4195 { 4196 struct qla_tgt_sess_op *op = container_of(work, 4197 struct qla_tgt_sess_op, work); 4198 scsi_qla_host_t *vha = op->vha; 4199 struct qla_hw_data *ha = vha->hw; 4200 struct fc_port *sess; 4201 struct qla_tgt_cmd *cmd; 4202 unsigned long flags; 4203 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id; 4204 4205 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4206 list_del(&op->cmd_list); 4207 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4208 4209 if (op->aborted) { 4210 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083, 4211 "sess_op with tag %u is aborted\n", 4212 op->atio.u.isp24.exchange_addr); 4213 goto out_term; 4214 } 4215 4216 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, 4217 "qla_target(%d): Unable to find wwn login" 4218 " (s_id %x:%x:%x), trying to create it manually\n", 4219 vha->vp_idx, s_id[0], s_id[1], s_id[2]); 4220 4221 if (op->atio.u.raw.entry_count > 1) { 4222 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, 4223 "Dropping multy entry atio %p\n", &op->atio); 4224 goto out_term; 4225 } 4226 4227 sess = qlt_make_local_sess(vha, s_id); 4228 /* sess has an extra creation ref. */ 4229 4230 if (!sess) 4231 goto out_term; 4232 /* 4233 * Now obtain a pre-allocated session tag using the original op->atio 4234 * packet header, and dispatch into __qlt_do_work() using the existing 4235 * process context. 4236 */ 4237 cmd = qlt_get_tag(vha, sess, &op->atio); 4238 if (!cmd) { 4239 struct qla_qpair *qpair = ha->base_qpair; 4240 4241 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4242 qlt_send_busy(qpair, &op->atio, SAM_STAT_BUSY); 4243 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 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 kfree(op); 4249 return; 4250 } 4251 4252 /* 4253 * __qlt_do_work() will call qlt_put_sess() to release 4254 * the extra reference taken above by qlt_make_local_sess() 4255 */ 4256 __qlt_do_work(cmd); 4257 kfree(op); 4258 return; 4259 out_term: 4260 qlt_send_term_exchange(vha->hw->base_qpair, NULL, &op->atio, 0, 0); 4261 kfree(op); 4262 } 4263 4264 /* ha->hardware_lock supposed to be held on entry */ 4265 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4266 struct atio_from_isp *atio) 4267 { 4268 struct qla_hw_data *ha = vha->hw; 4269 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4270 struct fc_port *sess; 4271 struct qla_tgt_cmd *cmd; 4272 unsigned long flags; 4273 4274 if (unlikely(tgt->tgt_stop)) { 4275 ql_dbg(ql_dbg_io, vha, 0x3061, 4276 "New command while device %p is shutting down\n", tgt); 4277 return -EFAULT; 4278 } 4279 4280 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4281 if (unlikely(!sess)) { 4282 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op), 4283 GFP_ATOMIC); 4284 if (!op) 4285 return -ENOMEM; 4286 4287 memcpy(&op->atio, atio, sizeof(*atio)); 4288 op->vha = vha; 4289 4290 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4291 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list); 4292 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4293 4294 INIT_WORK(&op->work, qlt_create_sess_from_atio); 4295 queue_work(qla_tgt_wq, &op->work); 4296 return 0; 4297 } 4298 4299 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4300 * session deletion, but it's still in sess_del_work wq */ 4301 if (sess->deleted) { 4302 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4303 "New command while old session %p is being deleted\n", 4304 sess); 4305 return -EFAULT; 4306 } 4307 4308 /* 4309 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4310 */ 4311 if (!kref_get_unless_zero(&sess->sess_kref)) { 4312 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4313 "%s: kref_get fail, %8phC oxid %x \n", 4314 __func__, sess->port_name, 4315 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4316 return -EFAULT; 4317 } 4318 4319 cmd = qlt_get_tag(vha, sess, atio); 4320 if (!cmd) { 4321 ql_dbg(ql_dbg_io, vha, 0x3062, 4322 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4323 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4324 ha->tgt.tgt_ops->put_sess(sess); 4325 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4326 return -ENOMEM; 4327 } 4328 4329 cmd->cmd_in_wq = 1; 4330 cmd->trc_flags |= TRC_NEW_CMD; 4331 4332 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4333 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4334 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4335 4336 INIT_WORK(&cmd->work, qlt_do_work); 4337 if (vha->flags.qpairs_available) { 4338 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4339 } else if (ha->msix_count) { 4340 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4341 queue_work_on(smp_processor_id(), qla_tgt_wq, 4342 &cmd->work); 4343 else 4344 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4345 &cmd->work); 4346 } else { 4347 queue_work(qla_tgt_wq, &cmd->work); 4348 } 4349 4350 return 0; 4351 } 4352 4353 /* ha->hardware_lock supposed to be held on entry */ 4354 static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4355 int fn, void *iocb, int flags) 4356 { 4357 struct scsi_qla_host *vha = sess->vha; 4358 struct qla_hw_data *ha = vha->hw; 4359 struct qla_tgt_mgmt_cmd *mcmd; 4360 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4361 int res; 4362 4363 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4364 if (!mcmd) { 4365 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4366 "qla_target(%d): Allocation of management " 4367 "command failed, some commands and their data could " 4368 "leak\n", vha->vp_idx); 4369 return -ENOMEM; 4370 } 4371 memset(mcmd, 0, sizeof(*mcmd)); 4372 mcmd->sess = sess; 4373 4374 if (iocb) { 4375 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4376 sizeof(mcmd->orig_iocb.imm_ntfy)); 4377 } 4378 mcmd->tmr_func = fn; 4379 mcmd->flags = flags; 4380 mcmd->reset_count = ha->base_qpair->chip_reset; 4381 mcmd->qpair = ha->base_qpair; 4382 4383 switch (fn) { 4384 case QLA_TGT_LUN_RESET: 4385 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4386 break; 4387 } 4388 4389 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, mcmd->tmr_func, 0); 4390 if (res != 0) { 4391 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, 4392 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", 4393 sess->vha->vp_idx, res); 4394 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4395 return -EFAULT; 4396 } 4397 4398 return 0; 4399 } 4400 4401 /* ha->hardware_lock supposed to be held on entry */ 4402 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4403 { 4404 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4405 struct qla_hw_data *ha = vha->hw; 4406 struct qla_tgt *tgt; 4407 struct fc_port *sess; 4408 u64 unpacked_lun; 4409 int fn; 4410 unsigned long flags; 4411 4412 tgt = vha->vha_tgt.qla_tgt; 4413 4414 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4415 4416 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4417 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4418 a->u.isp24.fcp_hdr.s_id); 4419 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4420 4421 unpacked_lun = 4422 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4423 4424 if (!sess) { 4425 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, 4426 "qla_target(%d): task mgmt fn 0x%x for " 4427 "non-existant session\n", vha->vp_idx, fn); 4428 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, 4429 sizeof(struct atio_from_isp)); 4430 } 4431 4432 if (sess->deleted) 4433 return -EFAULT; 4434 4435 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4436 } 4437 4438 /* ha->hardware_lock supposed to be held on entry */ 4439 static int __qlt_abort_task(struct scsi_qla_host *vha, 4440 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4441 { 4442 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4443 struct qla_hw_data *ha = vha->hw; 4444 struct qla_tgt_mgmt_cmd *mcmd; 4445 u64 unpacked_lun; 4446 int rc; 4447 4448 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4449 if (mcmd == NULL) { 4450 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4451 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4452 vha->vp_idx, __func__); 4453 return -ENOMEM; 4454 } 4455 memset(mcmd, 0, sizeof(*mcmd)); 4456 4457 mcmd->sess = sess; 4458 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4459 sizeof(mcmd->orig_iocb.imm_ntfy)); 4460 4461 unpacked_lun = 4462 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4463 mcmd->reset_count = ha->base_qpair->chip_reset; 4464 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4465 mcmd->qpair = ha->base_qpair; 4466 4467 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4468 le16_to_cpu(iocb->u.isp2x.seq_id)); 4469 if (rc != 0) { 4470 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4471 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4472 vha->vp_idx, rc); 4473 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4474 return -EFAULT; 4475 } 4476 4477 return 0; 4478 } 4479 4480 /* ha->hardware_lock supposed to be held on entry */ 4481 static int qlt_abort_task(struct scsi_qla_host *vha, 4482 struct imm_ntfy_from_isp *iocb) 4483 { 4484 struct qla_hw_data *ha = vha->hw; 4485 struct fc_port *sess; 4486 int loop_id; 4487 unsigned long flags; 4488 4489 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4490 4491 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4492 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4493 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4494 4495 if (sess == NULL) { 4496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4497 "qla_target(%d): task abort for unexisting " 4498 "session\n", vha->vp_idx); 4499 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4500 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4501 } 4502 4503 return __qlt_abort_task(vha, iocb, sess); 4504 } 4505 4506 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4507 { 4508 if (rc != MBS_COMMAND_COMPLETE) { 4509 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4510 "%s: se_sess %p / sess %p from" 4511 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4512 " LOGO failed: %#x\n", 4513 __func__, 4514 fcport->se_sess, 4515 fcport, 4516 fcport->port_name, fcport->loop_id, 4517 fcport->d_id.b.domain, fcport->d_id.b.area, 4518 fcport->d_id.b.al_pa, rc); 4519 } 4520 4521 fcport->logout_completed = 1; 4522 } 4523 4524 /* 4525 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4526 * 4527 * Schedules sessions with matching port_id/loop_id but different wwn for 4528 * deletion. Returns existing session with matching wwn if present. 4529 * Null otherwise. 4530 */ 4531 struct fc_port * 4532 qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4533 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4534 { 4535 struct fc_port *sess = NULL, *other_sess; 4536 uint64_t other_wwn; 4537 4538 *conflict_sess = NULL; 4539 4540 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4541 4542 other_wwn = wwn_to_u64(other_sess->port_name); 4543 4544 if (wwn == other_wwn) { 4545 WARN_ON(sess); 4546 sess = other_sess; 4547 continue; 4548 } 4549 4550 /* find other sess with nport_id collision */ 4551 if (port_id.b24 == other_sess->d_id.b24) { 4552 if (loop_id != other_sess->loop_id) { 4553 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000c, 4554 "Invalidating sess %p loop_id %d wwn %llx.\n", 4555 other_sess, other_sess->loop_id, other_wwn); 4556 4557 /* 4558 * logout_on_delete is set by default, but another 4559 * session that has the same s_id/loop_id combo 4560 * might have cleared it when requested this session 4561 * deletion, so don't touch it 4562 */ 4563 qlt_schedule_sess_for_deletion(other_sess, true); 4564 } else { 4565 /* 4566 * Another wwn used to have our s_id/loop_id 4567 * kill the session, but don't free the loop_id 4568 */ 4569 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01b, 4570 "Invalidating sess %p loop_id %d wwn %llx.\n", 4571 other_sess, other_sess->loop_id, other_wwn); 4572 4573 4574 other_sess->keep_nport_handle = 1; 4575 *conflict_sess = other_sess; 4576 qlt_schedule_sess_for_deletion(other_sess, 4577 true); 4578 } 4579 continue; 4580 } 4581 4582 /* find other sess with nport handle collision */ 4583 if ((loop_id == other_sess->loop_id) && 4584 (loop_id != FC_NO_LOOP_ID)) { 4585 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000d, 4586 "Invalidating sess %p loop_id %d wwn %llx.\n", 4587 other_sess, other_sess->loop_id, other_wwn); 4588 4589 /* Same loop_id but different s_id 4590 * Ok to kill and logout */ 4591 qlt_schedule_sess_for_deletion(other_sess, true); 4592 } 4593 } 4594 4595 return sess; 4596 } 4597 4598 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4599 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4600 { 4601 struct qla_tgt_sess_op *op; 4602 struct qla_tgt_cmd *cmd; 4603 uint32_t key; 4604 int count = 0; 4605 unsigned long flags; 4606 4607 key = (((u32)s_id->b.domain << 16) | 4608 ((u32)s_id->b.area << 8) | 4609 ((u32)s_id->b.al_pa)); 4610 4611 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4612 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4613 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4614 4615 if (op_key == key) { 4616 op->aborted = true; 4617 count++; 4618 } 4619 } 4620 4621 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 4622 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4623 if (op_key == key) { 4624 op->aborted = true; 4625 count++; 4626 } 4627 } 4628 4629 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4630 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4631 if (cmd_key == key) { 4632 cmd->aborted = 1; 4633 count++; 4634 } 4635 } 4636 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4637 4638 return count; 4639 } 4640 4641 /* 4642 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4643 */ 4644 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4645 struct imm_ntfy_from_isp *iocb) 4646 { 4647 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4648 struct qla_hw_data *ha = vha->hw; 4649 struct fc_port *sess = NULL, *conflict_sess = NULL; 4650 uint64_t wwn; 4651 port_id_t port_id; 4652 uint16_t loop_id; 4653 uint16_t wd3_lo; 4654 int res = 0; 4655 struct qlt_plogi_ack_t *pla; 4656 unsigned long flags; 4657 4658 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4659 4660 port_id.b.domain = iocb->u.isp24.port_id[2]; 4661 port_id.b.area = iocb->u.isp24.port_id[1]; 4662 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4663 port_id.b.rsvd_1 = 0; 4664 4665 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4666 4667 ql_dbg(ql_dbg_disc, vha, 0xf026, 4668 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 4669 vha->vp_idx, iocb->u.isp24.port_id[2], 4670 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 4671 iocb->u.isp24.status_subcode, loop_id, 4672 iocb->u.isp24.port_name); 4673 4674 /* res = 1 means ack at the end of thread 4675 * res = 0 means ack async/later. 4676 */ 4677 switch (iocb->u.isp24.status_subcode) { 4678 case ELS_PLOGI: 4679 4680 /* Mark all stale commands in qla_tgt_wq for deletion */ 4681 abort_cmds_for_s_id(vha, &port_id); 4682 4683 if (wwn) { 4684 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4685 sess = qlt_find_sess_invalidate_other(vha, wwn, 4686 port_id, loop_id, &conflict_sess); 4687 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4688 } 4689 4690 if (IS_SW_RESV_ADDR(port_id)) { 4691 res = 1; 4692 break; 4693 } 4694 4695 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4696 if (!pla) { 4697 qlt_send_term_imm_notif(vha, iocb, 1); 4698 break; 4699 } 4700 4701 res = 0; 4702 4703 if (conflict_sess) { 4704 conflict_sess->login_gen++; 4705 qlt_plogi_ack_link(vha, pla, conflict_sess, 4706 QLT_PLOGI_LINK_CONFLICT); 4707 } 4708 4709 if (!sess) { 4710 pla->ref_count++; 4711 qla24xx_post_newsess_work(vha, &port_id, 4712 iocb->u.isp24.port_name, pla); 4713 res = 0; 4714 break; 4715 } 4716 4717 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4718 sess->fw_login_state = DSC_LS_PLOGI_PEND; 4719 sess->d_id = port_id; 4720 sess->login_gen++; 4721 4722 switch (sess->disc_state) { 4723 case DSC_DELETED: 4724 qlt_plogi_ack_unref(vha, pla); 4725 break; 4726 4727 default: 4728 /* 4729 * Under normal circumstances we want to release nport handle 4730 * during LOGO process to avoid nport handle leaks inside FW. 4731 * The exception is when LOGO is done while another PLOGI with 4732 * the same nport handle is waiting as might be the case here. 4733 * Note: there is always a possibily of a race where session 4734 * deletion has already started for other reasons (e.g. ACL 4735 * removal) and now PLOGI arrives: 4736 * 1. if PLOGI arrived in FW after nport handle has been freed, 4737 * FW must have assigned this PLOGI a new/same handle and we 4738 * can proceed ACK'ing it as usual when session deletion 4739 * completes. 4740 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4741 * bit reached it, the handle has now been released. We'll 4742 * get an error when we ACK this PLOGI. Nothing will be sent 4743 * back to initiator. Initiator should eventually retry 4744 * PLOGI and situation will correct itself. 4745 */ 4746 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4747 (sess->d_id.b24 == port_id.b24)); 4748 4749 ql_dbg(ql_dbg_disc, vha, 0x20f9, 4750 "%s %d %8phC post del sess\n", 4751 __func__, __LINE__, sess->port_name); 4752 4753 4754 qlt_schedule_sess_for_deletion_lock(sess); 4755 break; 4756 } 4757 4758 break; 4759 4760 case ELS_PRLI: 4761 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4762 4763 if (wwn) { 4764 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4765 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 4766 loop_id, &conflict_sess); 4767 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4768 } 4769 4770 if (conflict_sess) { 4771 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4772 "PRLI with conflicting sess %p port %8phC\n", 4773 conflict_sess, conflict_sess->port_name); 4774 qlt_send_term_imm_notif(vha, iocb, 1); 4775 res = 0; 4776 break; 4777 } 4778 4779 if (sess != NULL) { 4780 if (sess->fw_login_state != DSC_LS_PLOGI_PEND && 4781 sess->fw_login_state != DSC_LS_PLOGI_COMP) { 4782 /* 4783 * Impatient initiator sent PRLI before last 4784 * PLOGI could finish. Will force him to re-try, 4785 * while last one finishes. 4786 */ 4787 ql_log(ql_log_warn, sess->vha, 0xf095, 4788 "sess %p PRLI received, before plogi ack.\n", 4789 sess); 4790 qlt_send_term_imm_notif(vha, iocb, 1); 4791 res = 0; 4792 break; 4793 } 4794 4795 /* 4796 * This shouldn't happen under normal circumstances, 4797 * since we have deleted the old session during PLOGI 4798 */ 4799 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4800 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4801 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4802 4803 sess->local = 0; 4804 sess->loop_id = loop_id; 4805 sess->d_id = port_id; 4806 sess->fw_login_state = DSC_LS_PRLI_PEND; 4807 4808 if (wd3_lo & BIT_7) 4809 sess->conf_compl_supported = 1; 4810 4811 if ((wd3_lo & BIT_4) == 0) 4812 sess->port_type = FCT_INITIATOR; 4813 else 4814 sess->port_type = FCT_TARGET; 4815 } 4816 res = 1; /* send notify ack */ 4817 4818 /* Make session global (not used in fabric mode) */ 4819 if (ha->current_topology != ISP_CFG_F) { 4820 if (sess) { 4821 ql_dbg(ql_dbg_disc, vha, 0x20fa, 4822 "%s %d %8phC post nack\n", 4823 __func__, __LINE__, sess->port_name); 4824 qla24xx_post_nack_work(vha, sess, iocb, 4825 SRB_NACK_PRLI); 4826 res = 0; 4827 } else { 4828 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4829 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4830 qla2xxx_wake_dpc(vha); 4831 } 4832 } else { 4833 if (sess) { 4834 ql_dbg(ql_dbg_disc, vha, 0x20fb, 4835 "%s %d %8phC post nack\n", 4836 __func__, __LINE__, sess->port_name); 4837 qla24xx_post_nack_work(vha, sess, iocb, 4838 SRB_NACK_PRLI); 4839 res = 0; 4840 } 4841 } 4842 break; 4843 4844 case ELS_TPRLO: 4845 if (le16_to_cpu(iocb->u.isp24.flags) & 4846 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 4847 loop_id = 0xFFFF; 4848 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 4849 res = 1; 4850 break; 4851 } 4852 /* drop through */ 4853 case ELS_LOGO: 4854 case ELS_PRLO: 4855 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4856 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 4857 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4858 4859 if (sess) { 4860 sess->login_gen++; 4861 sess->fw_login_state = DSC_LS_LOGO_PEND; 4862 sess->logo_ack_needed = 1; 4863 memcpy(sess->iocb, iocb, IOCB_SIZE); 4864 } 4865 4866 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4867 4868 ql_dbg(ql_dbg_disc, vha, 0x20fc, 4869 "%s: logo %llx res %d sess %p ", 4870 __func__, wwn, res, sess); 4871 if (res == 0) { 4872 /* 4873 * cmd went upper layer, look for qlt_xmit_tm_rsp() 4874 * for LOGO_ACK & sess delete 4875 */ 4876 BUG_ON(!sess); 4877 res = 0; 4878 } else { 4879 /* cmd did not go to upper layer. */ 4880 if (sess) { 4881 qlt_schedule_sess_for_deletion_lock(sess); 4882 res = 0; 4883 } 4884 /* else logo will be ack */ 4885 } 4886 break; 4887 case ELS_PDISC: 4888 case ELS_ADISC: 4889 { 4890 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4891 if (tgt->link_reinit_iocb_pending) { 4892 qlt_send_notify_ack(ha->base_qpair, 4893 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 4894 tgt->link_reinit_iocb_pending = 0; 4895 } 4896 4897 sess = qla2x00_find_fcport_by_wwpn(vha, 4898 iocb->u.isp24.port_name, 1); 4899 if (sess) { 4900 ql_dbg(ql_dbg_disc, vha, 0x20fd, 4901 "sess %p lid %d|%d DS %d LS %d\n", 4902 sess, sess->loop_id, loop_id, 4903 sess->disc_state, sess->fw_login_state); 4904 } 4905 4906 res = 1; /* send notify ack */ 4907 break; 4908 } 4909 4910 case ELS_FLOGI: /* should never happen */ 4911 default: 4912 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 4913 "qla_target(%d): Unsupported ELS command %x " 4914 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 4915 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4916 break; 4917 } 4918 4919 return res; 4920 } 4921 4922 /* 4923 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4924 */ 4925 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 4926 struct imm_ntfy_from_isp *iocb) 4927 { 4928 struct qla_hw_data *ha = vha->hw; 4929 uint32_t add_flags = 0; 4930 int send_notify_ack = 1; 4931 uint16_t status; 4932 4933 status = le16_to_cpu(iocb->u.isp2x.status); 4934 switch (status) { 4935 case IMM_NTFY_LIP_RESET: 4936 { 4937 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 4938 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 4939 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 4940 iocb->u.isp24.status_subcode); 4941 4942 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4943 send_notify_ack = 0; 4944 break; 4945 } 4946 4947 case IMM_NTFY_LIP_LINK_REINIT: 4948 { 4949 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4950 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 4951 "qla_target(%d): LINK REINIT (loop %#x, " 4952 "subcode %x)\n", vha->vp_idx, 4953 le16_to_cpu(iocb->u.isp24.nport_handle), 4954 iocb->u.isp24.status_subcode); 4955 if (tgt->link_reinit_iocb_pending) { 4956 qlt_send_notify_ack(ha->base_qpair, 4957 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 4958 } 4959 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 4960 tgt->link_reinit_iocb_pending = 1; 4961 /* 4962 * QLogic requires to wait after LINK REINIT for possible 4963 * PDISC or ADISC ELS commands 4964 */ 4965 send_notify_ack = 0; 4966 break; 4967 } 4968 4969 case IMM_NTFY_PORT_LOGOUT: 4970 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 4971 "qla_target(%d): Port logout (loop " 4972 "%#x, subcode %x)\n", vha->vp_idx, 4973 le16_to_cpu(iocb->u.isp24.nport_handle), 4974 iocb->u.isp24.status_subcode); 4975 4976 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 4977 send_notify_ack = 0; 4978 /* The sessions will be cleared in the callback, if needed */ 4979 break; 4980 4981 case IMM_NTFY_GLBL_TPRLO: 4982 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 4983 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 4984 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4985 send_notify_ack = 0; 4986 /* The sessions will be cleared in the callback, if needed */ 4987 break; 4988 4989 case IMM_NTFY_PORT_CONFIG: 4990 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 4991 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 4992 status); 4993 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4994 send_notify_ack = 0; 4995 /* The sessions will be cleared in the callback, if needed */ 4996 break; 4997 4998 case IMM_NTFY_GLBL_LOGO: 4999 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5000 "qla_target(%d): Link failure detected\n", 5001 vha->vp_idx); 5002 /* I_T nexus loss */ 5003 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5004 send_notify_ack = 0; 5005 break; 5006 5007 case IMM_NTFY_IOCB_OVERFLOW: 5008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5009 "qla_target(%d): Cannot provide requested " 5010 "capability (IOCB overflowed the immediate notify " 5011 "resource count)\n", vha->vp_idx); 5012 break; 5013 5014 case IMM_NTFY_ABORT_TASK: 5015 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5016 "qla_target(%d): Abort Task (S %08x I %#x -> " 5017 "L %#x)\n", vha->vp_idx, 5018 le16_to_cpu(iocb->u.isp2x.seq_id), 5019 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5020 le16_to_cpu(iocb->u.isp2x.lun)); 5021 if (qlt_abort_task(vha, iocb) == 0) 5022 send_notify_ack = 0; 5023 break; 5024 5025 case IMM_NTFY_RESOURCE: 5026 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5027 "qla_target(%d): Out of resources, host %ld\n", 5028 vha->vp_idx, vha->host_no); 5029 break; 5030 5031 case IMM_NTFY_MSG_RX: 5032 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5033 "qla_target(%d): Immediate notify task %x\n", 5034 vha->vp_idx, iocb->u.isp2x.task_flags); 5035 if (qlt_handle_task_mgmt(vha, iocb) == 0) 5036 send_notify_ack = 0; 5037 break; 5038 5039 case IMM_NTFY_ELS: 5040 if (qlt_24xx_handle_els(vha, iocb) == 0) 5041 send_notify_ack = 0; 5042 break; 5043 default: 5044 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5045 "qla_target(%d): Received unknown immediate " 5046 "notify status %x\n", vha->vp_idx, status); 5047 break; 5048 } 5049 5050 if (send_notify_ack) 5051 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 5052 0, 0); 5053 } 5054 5055 /* 5056 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5057 * This function sends busy to ISP 2xxx or 24xx. 5058 */ 5059 static int __qlt_send_busy(struct qla_qpair *qpair, 5060 struct atio_from_isp *atio, uint16_t status) 5061 { 5062 struct scsi_qla_host *vha = qpair->vha; 5063 struct ctio7_to_24xx *ctio24; 5064 struct qla_hw_data *ha = vha->hw; 5065 request_t *pkt; 5066 struct fc_port *sess = NULL; 5067 unsigned long flags; 5068 u16 temp; 5069 5070 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5071 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5072 atio->u.isp24.fcp_hdr.s_id); 5073 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5074 if (!sess) { 5075 qlt_send_term_exchange(qpair, NULL, atio, 1, 0); 5076 return 0; 5077 } 5078 /* Sending marker isn't necessary, since we called from ISR */ 5079 5080 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 5081 if (!pkt) { 5082 ql_dbg(ql_dbg_io, vha, 0x3063, 5083 "qla_target(%d): %s failed: unable to allocate " 5084 "request packet", vha->vp_idx, __func__); 5085 return -ENOMEM; 5086 } 5087 5088 qpair->tgt_counters.num_q_full_sent++; 5089 pkt->entry_count = 1; 5090 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5091 5092 ctio24 = (struct ctio7_to_24xx *)pkt; 5093 ctio24->entry_type = CTIO_TYPE7; 5094 ctio24->nport_handle = sess->loop_id; 5095 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5096 ctio24->vp_index = vha->vp_idx; 5097 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5098 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5099 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5100 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5101 temp = (atio->u.isp24.attr << 9) | 5102 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5103 CTIO7_FLAGS_DONT_RET_CTIO; 5104 ctio24->u.status1.flags = cpu_to_le16(temp); 5105 /* 5106 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5107 * if the explicit conformation is used. 5108 */ 5109 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5110 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5111 /* Memory Barrier */ 5112 wmb(); 5113 if (qpair->reqq_start_iocbs) 5114 qpair->reqq_start_iocbs(qpair); 5115 else 5116 qla2x00_start_iocbs(vha, qpair->req); 5117 return 0; 5118 } 5119 5120 /* 5121 * This routine is used to allocate a command for either a QFull condition 5122 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5123 * out previously. 5124 */ 5125 static void 5126 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5127 struct atio_from_isp *atio, uint16_t status, int qfull) 5128 { 5129 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5130 struct qla_hw_data *ha = vha->hw; 5131 struct fc_port *sess; 5132 struct se_session *se_sess; 5133 struct qla_tgt_cmd *cmd; 5134 int tag; 5135 unsigned long flags; 5136 5137 if (unlikely(tgt->tgt_stop)) { 5138 ql_dbg(ql_dbg_io, vha, 0x300a, 5139 "New command while device %p is shutting down\n", tgt); 5140 return; 5141 } 5142 5143 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5144 vha->hw->tgt.num_qfull_cmds_dropped++; 5145 if (vha->hw->tgt.num_qfull_cmds_dropped > 5146 vha->qla_stats.stat_max_qfull_cmds_dropped) 5147 vha->qla_stats.stat_max_qfull_cmds_dropped = 5148 vha->hw->tgt.num_qfull_cmds_dropped; 5149 5150 ql_dbg(ql_dbg_io, vha, 0x3068, 5151 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5152 vha->vp_idx, __func__, 5153 vha->hw->tgt.num_qfull_cmds_dropped); 5154 5155 qlt_chk_exch_leak_thresh_hold(vha); 5156 return; 5157 } 5158 5159 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5160 (vha, atio->u.isp24.fcp_hdr.s_id); 5161 if (!sess) 5162 return; 5163 5164 se_sess = sess->se_sess; 5165 5166 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 5167 if (tag < 0) 5168 return; 5169 5170 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5171 if (!cmd) { 5172 ql_dbg(ql_dbg_io, vha, 0x3009, 5173 "qla_target(%d): %s: Allocation of cmd failed\n", 5174 vha->vp_idx, __func__); 5175 5176 vha->hw->tgt.num_qfull_cmds_dropped++; 5177 if (vha->hw->tgt.num_qfull_cmds_dropped > 5178 vha->qla_stats.stat_max_qfull_cmds_dropped) 5179 vha->qla_stats.stat_max_qfull_cmds_dropped = 5180 vha->hw->tgt.num_qfull_cmds_dropped; 5181 5182 qlt_chk_exch_leak_thresh_hold(vha); 5183 return; 5184 } 5185 5186 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5187 5188 qlt_incr_num_pend_cmds(vha); 5189 INIT_LIST_HEAD(&cmd->cmd_list); 5190 memcpy(&cmd->atio, atio, sizeof(*atio)); 5191 5192 cmd->tgt = vha->vha_tgt.qla_tgt; 5193 cmd->vha = vha; 5194 cmd->reset_count = ha->base_qpair->chip_reset; 5195 cmd->q_full = 1; 5196 cmd->qpair = ha->base_qpair; 5197 5198 if (qfull) { 5199 cmd->q_full = 1; 5200 /* NOTE: borrowing the state field to carry the status */ 5201 cmd->state = status; 5202 } else 5203 cmd->term_exchg = 1; 5204 5205 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5206 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5207 5208 vha->hw->tgt.num_qfull_cmds_alloc++; 5209 if (vha->hw->tgt.num_qfull_cmds_alloc > 5210 vha->qla_stats.stat_max_qfull_cmds_alloc) 5211 vha->qla_stats.stat_max_qfull_cmds_alloc = 5212 vha->hw->tgt.num_qfull_cmds_alloc; 5213 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5214 } 5215 5216 int 5217 qlt_free_qfull_cmds(struct qla_qpair *qpair) 5218 { 5219 struct scsi_qla_host *vha = qpair->vha; 5220 struct qla_hw_data *ha = vha->hw; 5221 unsigned long flags; 5222 struct qla_tgt_cmd *cmd, *tcmd; 5223 struct list_head free_list, q_full_list; 5224 int rc = 0; 5225 5226 if (list_empty(&ha->tgt.q_full_list)) 5227 return 0; 5228 5229 INIT_LIST_HEAD(&free_list); 5230 INIT_LIST_HEAD(&q_full_list); 5231 5232 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5233 if (list_empty(&ha->tgt.q_full_list)) { 5234 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5235 return 0; 5236 } 5237 5238 list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); 5239 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5240 5241 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 5242 list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { 5243 if (cmd->q_full) 5244 /* cmd->state is a borrowed field to hold status */ 5245 rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); 5246 else if (cmd->term_exchg) 5247 rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); 5248 5249 if (rc == -ENOMEM) 5250 break; 5251 5252 if (cmd->q_full) 5253 ql_dbg(ql_dbg_io, vha, 0x3006, 5254 "%s: busy sent for ox_id[%04x]\n", __func__, 5255 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5256 else if (cmd->term_exchg) 5257 ql_dbg(ql_dbg_io, vha, 0x3007, 5258 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5259 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5260 else 5261 ql_dbg(ql_dbg_io, vha, 0x3008, 5262 "%s: Unexpected cmd in QFull list %p\n", __func__, 5263 cmd); 5264 5265 list_del(&cmd->cmd_list); 5266 list_add_tail(&cmd->cmd_list, &free_list); 5267 5268 /* piggy back on hardware_lock for protection */ 5269 vha->hw->tgt.num_qfull_cmds_alloc--; 5270 } 5271 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 5272 5273 cmd = NULL; 5274 5275 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5276 list_del(&cmd->cmd_list); 5277 /* This cmd was never sent to TCM. There is no need 5278 * to schedule free or call free_cmd 5279 */ 5280 qlt_free_cmd(cmd); 5281 } 5282 5283 if (!list_empty(&q_full_list)) { 5284 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 5285 list_splice(&q_full_list, &vha->hw->tgt.q_full_list); 5286 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 5287 } 5288 5289 return rc; 5290 } 5291 5292 static void 5293 qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 5294 uint16_t status) 5295 { 5296 int rc = 0; 5297 struct scsi_qla_host *vha = qpair->vha; 5298 5299 rc = __qlt_send_busy(qpair, atio, status); 5300 if (rc == -ENOMEM) 5301 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5302 } 5303 5304 static int 5305 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 5306 struct atio_from_isp *atio, uint8_t ha_locked) 5307 { 5308 struct qla_hw_data *ha = vha->hw; 5309 uint16_t status; 5310 unsigned long flags; 5311 5312 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5313 return 0; 5314 5315 if (!ha_locked) 5316 spin_lock_irqsave(&ha->hardware_lock, flags); 5317 status = temp_sam_status; 5318 qlt_send_busy(qpair, atio, status); 5319 if (!ha_locked) 5320 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5321 5322 return 1; 5323 } 5324 5325 /* ha->hardware_lock supposed to be held on entry */ 5326 /* called via callback from qla2xxx */ 5327 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5328 struct atio_from_isp *atio, uint8_t ha_locked) 5329 { 5330 struct qla_hw_data *ha = vha->hw; 5331 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5332 int rc; 5333 unsigned long flags; 5334 5335 if (unlikely(tgt == NULL)) { 5336 ql_dbg(ql_dbg_tgt, vha, 0x3064, 5337 "ATIO pkt, but no tgt (ha %p)", ha); 5338 return; 5339 } 5340 /* 5341 * In tgt_stop mode we also should allow all requests to pass. 5342 * Otherwise, some commands can stuck. 5343 */ 5344 5345 tgt->atio_irq_cmd_count++; 5346 5347 switch (atio->u.raw.entry_type) { 5348 case ATIO_TYPE7: 5349 if (unlikely(atio->u.isp24.exchange_addr == 5350 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5351 ql_dbg(ql_dbg_io, vha, 0x3065, 5352 "qla_target(%d): ATIO_TYPE7 " 5353 "received with UNKNOWN exchange address, " 5354 "sending QUEUE_FULL\n", vha->vp_idx); 5355 if (!ha_locked) 5356 spin_lock_irqsave(&ha->hardware_lock, flags); 5357 qlt_send_busy(ha->base_qpair, atio, 5358 SAM_STAT_TASK_SET_FULL); 5359 if (!ha_locked) 5360 spin_unlock_irqrestore(&ha->hardware_lock, 5361 flags); 5362 break; 5363 } 5364 5365 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5366 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 5367 atio, ha_locked); 5368 if (rc != 0) { 5369 tgt->atio_irq_cmd_count--; 5370 return; 5371 } 5372 rc = qlt_handle_cmd_for_atio(vha, atio); 5373 } else { 5374 rc = qlt_handle_task_mgmt(vha, atio); 5375 } 5376 if (unlikely(rc != 0)) { 5377 if (rc == -ESRCH) { 5378 if (!ha_locked) 5379 spin_lock_irqsave(&ha->hardware_lock, 5380 flags); 5381 5382 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5383 qlt_send_busy(ha->base_qpair, atio, 5384 SAM_STAT_BUSY); 5385 #else 5386 qlt_send_term_exchange(ha->base_qpair, NULL, 5387 atio, 1, 0); 5388 #endif 5389 if (!ha_locked) 5390 spin_unlock_irqrestore( 5391 &ha->hardware_lock, flags); 5392 } else { 5393 if (tgt->tgt_stop) { 5394 ql_dbg(ql_dbg_tgt, vha, 0xe059, 5395 "qla_target: Unable to send " 5396 "command to target for req, " 5397 "ignoring.\n"); 5398 } else { 5399 ql_dbg(ql_dbg_tgt, vha, 0xe05a, 5400 "qla_target(%d): Unable to send " 5401 "command to target, sending BUSY " 5402 "status.\n", vha->vp_idx); 5403 if (!ha_locked) 5404 spin_lock_irqsave( 5405 &ha->hardware_lock, flags); 5406 qlt_send_busy(ha->base_qpair, 5407 atio, SAM_STAT_BUSY); 5408 if (!ha_locked) 5409 spin_unlock_irqrestore( 5410 &ha->hardware_lock, flags); 5411 } 5412 } 5413 } 5414 break; 5415 5416 case IMMED_NOTIFY_TYPE: 5417 { 5418 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5419 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5420 "qla_target(%d): Received ATIO packet %x " 5421 "with error status %x\n", vha->vp_idx, 5422 atio->u.raw.entry_type, 5423 atio->u.isp2x.entry_status); 5424 break; 5425 } 5426 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5427 5428 if (!ha_locked) 5429 spin_lock_irqsave(&ha->hardware_lock, flags); 5430 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5431 if (!ha_locked) 5432 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5433 break; 5434 } 5435 5436 default: 5437 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5438 "qla_target(%d): Received unknown ATIO atio " 5439 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5440 break; 5441 } 5442 5443 tgt->atio_irq_cmd_count--; 5444 } 5445 5446 /* ha->hardware_lock supposed to be held on entry */ 5447 /* called via callback from qla2xxx */ 5448 static void qlt_response_pkt(struct scsi_qla_host *vha, 5449 struct rsp_que *rsp, response_t *pkt) 5450 { 5451 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5452 5453 if (unlikely(tgt == NULL)) { 5454 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5455 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 5456 vha->vp_idx, pkt->entry_type, vha->hw); 5457 return; 5458 } 5459 5460 /* 5461 * In tgt_stop mode we also should allow all requests to pass. 5462 * Otherwise, some commands can stuck. 5463 */ 5464 5465 switch (pkt->entry_type) { 5466 case CTIO_CRC2: 5467 case CTIO_TYPE7: 5468 { 5469 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5470 qlt_do_ctio_completion(vha, rsp, entry->handle, 5471 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5472 entry); 5473 break; 5474 } 5475 5476 case ACCEPT_TGT_IO_TYPE: 5477 { 5478 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5479 int rc; 5480 if (atio->u.isp2x.status != 5481 cpu_to_le16(ATIO_CDB_VALID)) { 5482 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5483 "qla_target(%d): ATIO with error " 5484 "status %x received\n", vha->vp_idx, 5485 le16_to_cpu(atio->u.isp2x.status)); 5486 break; 5487 } 5488 5489 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 5490 if (rc != 0) 5491 return; 5492 5493 rc = qlt_handle_cmd_for_atio(vha, atio); 5494 if (unlikely(rc != 0)) { 5495 if (rc == -ESRCH) { 5496 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5497 qlt_send_busy(rsp->qpair, atio, 0); 5498 #else 5499 qlt_send_term_exchange(rsp->qpair, NULL, atio, 1, 0); 5500 #endif 5501 } else { 5502 if (tgt->tgt_stop) { 5503 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5504 "qla_target: Unable to send " 5505 "command to target, sending TERM " 5506 "EXCHANGE for rsp\n"); 5507 qlt_send_term_exchange(rsp->qpair, NULL, 5508 atio, 1, 0); 5509 } else { 5510 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5511 "qla_target(%d): Unable to send " 5512 "command to target, sending BUSY " 5513 "status\n", vha->vp_idx); 5514 qlt_send_busy(rsp->qpair, atio, 0); 5515 } 5516 } 5517 } 5518 } 5519 break; 5520 5521 case CONTINUE_TGT_IO_TYPE: 5522 { 5523 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5524 qlt_do_ctio_completion(vha, rsp, entry->handle, 5525 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5526 entry); 5527 break; 5528 } 5529 5530 case CTIO_A64_TYPE: 5531 { 5532 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5533 qlt_do_ctio_completion(vha, rsp, entry->handle, 5534 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5535 entry); 5536 break; 5537 } 5538 5539 case IMMED_NOTIFY_TYPE: 5540 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5541 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5542 break; 5543 5544 case NOTIFY_ACK_TYPE: 5545 if (tgt->notify_ack_expected > 0) { 5546 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5547 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5548 "NOTIFY_ACK seq %08x status %x\n", 5549 le16_to_cpu(entry->u.isp2x.seq_id), 5550 le16_to_cpu(entry->u.isp2x.status)); 5551 tgt->notify_ack_expected--; 5552 if (entry->u.isp2x.status != 5553 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5554 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5555 "qla_target(%d): NOTIFY_ACK " 5556 "failed %x\n", vha->vp_idx, 5557 le16_to_cpu(entry->u.isp2x.status)); 5558 } 5559 } else { 5560 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5561 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5562 vha->vp_idx); 5563 } 5564 break; 5565 5566 case ABTS_RECV_24XX: 5567 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5568 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5569 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5570 break; 5571 5572 case ABTS_RESP_24XX: 5573 if (tgt->abts_resp_expected > 0) { 5574 struct abts_resp_from_24xx_fw *entry = 5575 (struct abts_resp_from_24xx_fw *)pkt; 5576 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5577 "ABTS_RESP_24XX: compl_status %x\n", 5578 entry->compl_status); 5579 tgt->abts_resp_expected--; 5580 if (le16_to_cpu(entry->compl_status) != 5581 ABTS_RESP_COMPL_SUCCESS) { 5582 if ((entry->error_subcode1 == 0x1E) && 5583 (entry->error_subcode2 == 0)) { 5584 /* 5585 * We've got a race here: aborted 5586 * exchange not terminated, i.e. 5587 * response for the aborted command was 5588 * sent between the abort request was 5589 * received and processed. 5590 * Unfortunately, the firmware has a 5591 * silly requirement that all aborted 5592 * exchanges must be explicitely 5593 * terminated, otherwise it refuses to 5594 * send responses for the abort 5595 * requests. So, we have to 5596 * (re)terminate the exchange and retry 5597 * the abort response. 5598 */ 5599 qlt_24xx_retry_term_exchange(vha, 5600 entry); 5601 } else 5602 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5603 "qla_target(%d): ABTS_RESP_24XX " 5604 "failed %x (subcode %x:%x)", 5605 vha->vp_idx, entry->compl_status, 5606 entry->error_subcode1, 5607 entry->error_subcode2); 5608 } 5609 } else { 5610 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5611 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5612 "received\n", vha->vp_idx); 5613 } 5614 break; 5615 5616 default: 5617 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5618 "qla_target(%d): Received unknown response pkt " 5619 "type %x\n", vha->vp_idx, pkt->entry_type); 5620 break; 5621 } 5622 5623 } 5624 5625 /* 5626 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5627 */ 5628 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5629 uint16_t *mailbox) 5630 { 5631 struct qla_hw_data *ha = vha->hw; 5632 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5633 int login_code; 5634 5635 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 5636 return; 5637 5638 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5639 IS_QLA2100(ha)) 5640 return; 5641 /* 5642 * In tgt_stop mode we also should allow all requests to pass. 5643 * Otherwise, some commands can stuck. 5644 */ 5645 5646 5647 switch (code) { 5648 case MBA_RESET: /* Reset */ 5649 case MBA_SYSTEM_ERR: /* System Error */ 5650 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5651 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5652 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5653 "qla_target(%d): System error async event %#x " 5654 "occurred", vha->vp_idx, code); 5655 break; 5656 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5657 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5658 break; 5659 5660 case MBA_LOOP_UP: 5661 { 5662 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5663 "qla_target(%d): Async LOOP_UP occurred " 5664 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5665 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5666 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5667 if (tgt->link_reinit_iocb_pending) { 5668 qlt_send_notify_ack(ha->base_qpair, 5669 (void *)&tgt->link_reinit_iocb, 5670 0, 0, 0, 0, 0, 0); 5671 tgt->link_reinit_iocb_pending = 0; 5672 } 5673 break; 5674 } 5675 5676 case MBA_LIP_OCCURRED: 5677 case MBA_LOOP_DOWN: 5678 case MBA_LIP_RESET: 5679 case MBA_RSCN_UPDATE: 5680 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5681 "qla_target(%d): Async event %#x occurred " 5682 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5683 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5684 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5685 break; 5686 5687 case MBA_REJECTED_FCP_CMD: 5688 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 5689 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 5690 vha->vp_idx, 5691 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5692 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5693 5694 if (le16_to_cpu(mailbox[3]) == 1) { 5695 /* exchange starvation. */ 5696 vha->hw->exch_starvation++; 5697 if (vha->hw->exch_starvation > 5) { 5698 ql_log(ql_log_warn, vha, 0xd03a, 5699 "Exchange starvation-. Resetting RISC\n"); 5700 5701 vha->hw->exch_starvation = 0; 5702 if (IS_P3P_TYPE(vha->hw)) 5703 set_bit(FCOE_CTX_RESET_NEEDED, 5704 &vha->dpc_flags); 5705 else 5706 set_bit(ISP_ABORT_NEEDED, 5707 &vha->dpc_flags); 5708 qla2xxx_wake_dpc(vha); 5709 } 5710 } 5711 break; 5712 5713 case MBA_PORT_UPDATE: 5714 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5715 "qla_target(%d): Port update async event %#x " 5716 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5717 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5718 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5719 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5720 5721 login_code = le16_to_cpu(mailbox[2]); 5722 if (login_code == 0x4) { 5723 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5724 "Async MB 2: Got PLOGI Complete\n"); 5725 vha->hw->exch_starvation = 0; 5726 } else if (login_code == 0x7) 5727 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5728 "Async MB 2: Port Logged Out\n"); 5729 break; 5730 default: 5731 break; 5732 } 5733 5734 } 5735 5736 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5737 uint16_t loop_id) 5738 { 5739 fc_port_t *fcport, *tfcp, *del; 5740 int rc; 5741 unsigned long flags; 5742 u8 newfcport = 0; 5743 5744 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); 5745 if (!fcport) { 5746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5747 "qla_target(%d): Allocation of tmp FC port failed", 5748 vha->vp_idx); 5749 return NULL; 5750 } 5751 5752 fcport->loop_id = loop_id; 5753 5754 rc = qla24xx_gpdb_wait(vha, fcport, 0); 5755 if (rc != QLA_SUCCESS) { 5756 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5757 "qla_target(%d): Failed to retrieve fcport " 5758 "information -- get_port_database() returned %x " 5759 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5760 kfree(fcport); 5761 return NULL; 5762 } 5763 5764 del = NULL; 5765 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 5766 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 5767 5768 if (tfcp) { 5769 tfcp->d_id = fcport->d_id; 5770 tfcp->port_type = fcport->port_type; 5771 tfcp->supported_classes = fcport->supported_classes; 5772 tfcp->flags |= fcport->flags; 5773 5774 del = fcport; 5775 fcport = tfcp; 5776 } else { 5777 if (vha->hw->current_topology == ISP_CFG_F) 5778 fcport->flags |= FCF_FABRIC_DEVICE; 5779 5780 list_add_tail(&fcport->list, &vha->vp_fcports); 5781 if (!IS_SW_RESV_ADDR(fcport->d_id)) 5782 vha->fcport_count++; 5783 fcport->login_gen++; 5784 fcport->disc_state = DSC_LOGIN_COMPLETE; 5785 fcport->login_succ = 1; 5786 newfcport = 1; 5787 } 5788 5789 fcport->deleted = 0; 5790 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 5791 5792 switch (vha->host->active_mode) { 5793 case MODE_INITIATOR: 5794 case MODE_DUAL: 5795 if (newfcport) { 5796 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 5797 ql_dbg(ql_dbg_disc, vha, 0x20fe, 5798 "%s %d %8phC post upd_fcport fcp_cnt %d\n", 5799 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5800 qla24xx_post_upd_fcport_work(vha, fcport); 5801 } else { 5802 ql_dbg(ql_dbg_disc, vha, 0x20ff, 5803 "%s %d %8phC post gpsc fcp_cnt %d\n", 5804 __func__, __LINE__, fcport->port_name, vha->fcport_count); 5805 qla24xx_post_gpsc_work(vha, fcport); 5806 } 5807 } 5808 break; 5809 5810 case MODE_TARGET: 5811 default: 5812 break; 5813 } 5814 if (del) 5815 qla2x00_free_fcport(del); 5816 5817 return fcport; 5818 } 5819 5820 /* Must be called under tgt_mutex */ 5821 static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 5822 uint8_t *s_id) 5823 { 5824 struct fc_port *sess = NULL; 5825 fc_port_t *fcport = NULL; 5826 int rc, global_resets; 5827 uint16_t loop_id = 0; 5828 5829 if ((s_id[0] == 0xFF) && (s_id[1] == 0xFC)) { 5830 /* 5831 * This is Domain Controller, so it should be 5832 * OK to drop SCSI commands from it. 5833 */ 5834 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5835 "Unable to find initiator with S_ID %x:%x:%x", 5836 s_id[0], s_id[1], s_id[2]); 5837 return NULL; 5838 } 5839 5840 mutex_lock(&vha->vha_tgt.tgt_mutex); 5841 5842 retry: 5843 global_resets = 5844 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 5845 5846 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 5847 if (rc != 0) { 5848 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5849 5850 ql_log(ql_log_info, vha, 0xf071, 5851 "qla_target(%d): Unable to find " 5852 "initiator with S_ID %x:%x:%x", 5853 vha->vp_idx, s_id[0], s_id[1], 5854 s_id[2]); 5855 5856 if (rc == -ENOENT) { 5857 qlt_port_logo_t logo; 5858 sid_to_portid(s_id, &logo.id); 5859 logo.cmd_count = 1; 5860 qlt_send_first_logo(vha, &logo); 5861 } 5862 5863 return NULL; 5864 } 5865 5866 fcport = qlt_get_port_database(vha, loop_id); 5867 if (!fcport) { 5868 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5869 return NULL; 5870 } 5871 5872 if (global_resets != 5873 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 5874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 5875 "qla_target(%d): global reset during session discovery " 5876 "(counter was %d, new %d), retrying", vha->vp_idx, 5877 global_resets, 5878 atomic_read(&vha->vha_tgt. 5879 qla_tgt->tgt_global_resets_count)); 5880 goto retry; 5881 } 5882 5883 sess = qlt_create_sess(vha, fcport, true); 5884 5885 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5886 5887 return sess; 5888 } 5889 5890 static void qlt_abort_work(struct qla_tgt *tgt, 5891 struct qla_tgt_sess_work_param *prm) 5892 { 5893 struct scsi_qla_host *vha = tgt->vha; 5894 struct qla_hw_data *ha = vha->hw; 5895 struct fc_port *sess = NULL; 5896 unsigned long flags = 0, flags2 = 0; 5897 uint32_t be_s_id; 5898 uint8_t s_id[3]; 5899 int rc; 5900 5901 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5902 5903 if (tgt->tgt_stop) 5904 goto out_term2; 5905 5906 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 5907 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 5908 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 5909 5910 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5911 (unsigned char *)&be_s_id); 5912 if (!sess) { 5913 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5914 5915 sess = qlt_make_local_sess(vha, s_id); 5916 /* sess has got an extra creation ref */ 5917 5918 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5919 if (!sess) 5920 goto out_term2; 5921 } else { 5922 if (sess->deleted) { 5923 sess = NULL; 5924 goto out_term2; 5925 } 5926 5927 if (!kref_get_unless_zero(&sess->sess_kref)) { 5928 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 5929 "%s: kref_get fail %8phC \n", 5930 __func__, sess->port_name); 5931 sess = NULL; 5932 goto out_term2; 5933 } 5934 } 5935 5936 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 5937 ha->tgt.tgt_ops->put_sess(sess); 5938 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5939 5940 if (rc != 0) 5941 goto out_term; 5942 return; 5943 5944 out_term2: 5945 if (sess) 5946 ha->tgt.tgt_ops->put_sess(sess); 5947 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5948 5949 out_term: 5950 spin_lock_irqsave(&ha->hardware_lock, flags); 5951 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 5952 FCP_TMF_REJECTED, false); 5953 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5954 } 5955 5956 static void qlt_tmr_work(struct qla_tgt *tgt, 5957 struct qla_tgt_sess_work_param *prm) 5958 { 5959 struct atio_from_isp *a = &prm->tm_iocb2; 5960 struct scsi_qla_host *vha = tgt->vha; 5961 struct qla_hw_data *ha = vha->hw; 5962 struct fc_port *sess = NULL; 5963 unsigned long flags; 5964 uint8_t *s_id = NULL; /* to hide compiler warnings */ 5965 int rc; 5966 u64 unpacked_lun; 5967 int fn; 5968 void *iocb; 5969 5970 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5971 5972 if (tgt->tgt_stop) 5973 goto out_term2; 5974 5975 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 5976 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 5977 if (!sess) { 5978 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5979 5980 sess = qlt_make_local_sess(vha, s_id); 5981 /* sess has got an extra creation ref */ 5982 5983 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5984 if (!sess) 5985 goto out_term2; 5986 } else { 5987 if (sess->deleted) { 5988 sess = NULL; 5989 goto out_term2; 5990 } 5991 5992 if (!kref_get_unless_zero(&sess->sess_kref)) { 5993 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf020, 5994 "%s: kref_get fail %8phC\n", 5995 __func__, sess->port_name); 5996 sess = NULL; 5997 goto out_term2; 5998 } 5999 } 6000 6001 iocb = a; 6002 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 6003 unpacked_lun = 6004 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 6005 6006 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 6007 ha->tgt.tgt_ops->put_sess(sess); 6008 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6009 6010 if (rc != 0) 6011 goto out_term; 6012 return; 6013 6014 out_term2: 6015 if (sess) 6016 ha->tgt.tgt_ops->put_sess(sess); 6017 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6018 out_term: 6019 qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0); 6020 } 6021 6022 static void qlt_sess_work_fn(struct work_struct *work) 6023 { 6024 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6025 struct scsi_qla_host *vha = tgt->vha; 6026 unsigned long flags; 6027 6028 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6029 6030 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6031 while (!list_empty(&tgt->sess_works_list)) { 6032 struct qla_tgt_sess_work_param *prm = list_entry( 6033 tgt->sess_works_list.next, typeof(*prm), 6034 sess_works_list_entry); 6035 6036 /* 6037 * This work can be scheduled on several CPUs at time, so we 6038 * must delete the entry to eliminate double processing 6039 */ 6040 list_del(&prm->sess_works_list_entry); 6041 6042 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6043 6044 switch (prm->type) { 6045 case QLA_TGT_SESS_WORK_ABORT: 6046 qlt_abort_work(tgt, prm); 6047 break; 6048 case QLA_TGT_SESS_WORK_TM: 6049 qlt_tmr_work(tgt, prm); 6050 break; 6051 default: 6052 BUG_ON(1); 6053 break; 6054 } 6055 6056 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6057 6058 kfree(prm); 6059 } 6060 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6061 } 6062 6063 /* Must be called under tgt_host_action_mutex */ 6064 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6065 { 6066 struct qla_tgt *tgt; 6067 int rc, i; 6068 struct qla_qpair_hint *h; 6069 6070 if (!QLA_TGT_MODE_ENABLED()) 6071 return 0; 6072 6073 if (!IS_TGT_MODE_CAPABLE(ha)) { 6074 ql_log(ql_log_warn, base_vha, 0xe070, 6075 "This adapter does not support target mode.\n"); 6076 return 0; 6077 } 6078 6079 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6080 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6081 6082 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6083 6084 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6085 if (!tgt) { 6086 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6087 "Unable to allocate struct qla_tgt\n"); 6088 return -ENOMEM; 6089 } 6090 6091 tgt->qphints = kzalloc((ha->max_qpairs + 1) * 6092 sizeof(struct qla_qpair_hint), GFP_KERNEL); 6093 if (!tgt->qphints) { 6094 kfree(tgt); 6095 ql_log(ql_log_warn, base_vha, 0x0197, 6096 "Unable to allocate qpair hints.\n"); 6097 return -ENOMEM; 6098 } 6099 6100 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6101 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6102 6103 rc = btree_init64(&tgt->lun_qpair_map); 6104 if (rc) { 6105 kfree(tgt->qphints); 6106 kfree(tgt); 6107 ql_log(ql_log_info, base_vha, 0x0198, 6108 "Unable to initialize lun_qpair_map btree\n"); 6109 return -EIO; 6110 } 6111 h = &tgt->qphints[0]; 6112 h->qpair = ha->base_qpair; 6113 INIT_LIST_HEAD(&h->hint_elem); 6114 h->cpuid = ha->base_qpair->cpuid; 6115 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 6116 6117 for (i = 0; i < ha->max_qpairs; i++) { 6118 unsigned long flags; 6119 6120 struct qla_qpair *qpair = ha->queue_pair_map[i]; 6121 h = &tgt->qphints[i + 1]; 6122 INIT_LIST_HEAD(&h->hint_elem); 6123 if (qpair) { 6124 h->qpair = qpair; 6125 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 6126 list_add_tail(&h->hint_elem, &qpair->hints_list); 6127 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 6128 h->cpuid = qpair->cpuid; 6129 } 6130 } 6131 6132 tgt->ha = ha; 6133 tgt->vha = base_vha; 6134 init_waitqueue_head(&tgt->waitQ); 6135 INIT_LIST_HEAD(&tgt->del_sess_list); 6136 spin_lock_init(&tgt->sess_work_lock); 6137 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6138 INIT_LIST_HEAD(&tgt->sess_works_list); 6139 atomic_set(&tgt->tgt_global_resets_count, 0); 6140 6141 base_vha->vha_tgt.qla_tgt = tgt; 6142 6143 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6144 "qla_target(%d): using 64 Bit PCI addressing", 6145 base_vha->vp_idx); 6146 /* 3 is reserved */ 6147 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6148 6149 mutex_lock(&qla_tgt_mutex); 6150 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6151 mutex_unlock(&qla_tgt_mutex); 6152 6153 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 6154 ha->tgt.tgt_ops->add_target(base_vha); 6155 6156 return 0; 6157 } 6158 6159 /* Must be called under tgt_host_action_mutex */ 6160 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6161 { 6162 if (!vha->vha_tgt.qla_tgt) 6163 return 0; 6164 6165 if (vha->fc_vport) { 6166 qlt_release(vha->vha_tgt.qla_tgt); 6167 return 0; 6168 } 6169 6170 /* free left over qfull cmds */ 6171 qlt_init_term_exchange(vha); 6172 6173 mutex_lock(&qla_tgt_mutex); 6174 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 6175 mutex_unlock(&qla_tgt_mutex); 6176 6177 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6178 vha->host_no, ha); 6179 qlt_release(vha->vha_tgt.qla_tgt); 6180 6181 return 0; 6182 } 6183 6184 void qlt_remove_target_resources(struct qla_hw_data *ha) 6185 { 6186 struct scsi_qla_host *node; 6187 u32 key = 0; 6188 6189 btree_for_each_safe32(&ha->tgt.host_map, key, node) 6190 btree_remove32(&ha->tgt.host_map, key); 6191 6192 btree_destroy32(&ha->tgt.host_map); 6193 } 6194 6195 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6196 unsigned char *b) 6197 { 6198 int i; 6199 6200 pr_debug("qla2xxx HW vha->node_name: "); 6201 for (i = 0; i < WWN_SIZE; i++) 6202 pr_debug("%02x ", vha->node_name[i]); 6203 pr_debug("\n"); 6204 pr_debug("qla2xxx HW vha->port_name: "); 6205 for (i = 0; i < WWN_SIZE; i++) 6206 pr_debug("%02x ", vha->port_name[i]); 6207 pr_debug("\n"); 6208 6209 pr_debug("qla2xxx passed configfs WWPN: "); 6210 put_unaligned_be64(wwpn, b); 6211 for (i = 0; i < WWN_SIZE; i++) 6212 pr_debug("%02x ", b[i]); 6213 pr_debug("\n"); 6214 } 6215 6216 /** 6217 * qla_tgt_lport_register - register lport with external module 6218 * 6219 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops 6220 * @wwpn: Passwd FC target WWPN 6221 * @callback: lport initialization callback for tcm_qla2xxx code 6222 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6223 */ 6224 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6225 u64 npiv_wwpn, u64 npiv_wwnn, 6226 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6227 { 6228 struct qla_tgt *tgt; 6229 struct scsi_qla_host *vha; 6230 struct qla_hw_data *ha; 6231 struct Scsi_Host *host; 6232 unsigned long flags; 6233 int rc; 6234 u8 b[WWN_SIZE]; 6235 6236 mutex_lock(&qla_tgt_mutex); 6237 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6238 vha = tgt->vha; 6239 ha = vha->hw; 6240 6241 host = vha->host; 6242 if (!host) 6243 continue; 6244 6245 if (!(host->hostt->supported_mode & MODE_TARGET)) 6246 continue; 6247 6248 spin_lock_irqsave(&ha->hardware_lock, flags); 6249 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6250 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6251 host->host_no); 6252 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6253 continue; 6254 } 6255 if (tgt->tgt_stop) { 6256 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6257 host->host_no); 6258 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6259 continue; 6260 } 6261 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6262 6263 if (!scsi_host_get(host)) { 6264 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6265 "Unable to scsi_host_get() for" 6266 " qla2xxx scsi_host\n"); 6267 continue; 6268 } 6269 qlt_lport_dump(vha, phys_wwpn, b); 6270 6271 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6272 scsi_host_put(host); 6273 continue; 6274 } 6275 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6276 if (rc != 0) 6277 scsi_host_put(host); 6278 6279 mutex_unlock(&qla_tgt_mutex); 6280 return rc; 6281 } 6282 mutex_unlock(&qla_tgt_mutex); 6283 6284 return -ENODEV; 6285 } 6286 EXPORT_SYMBOL(qlt_lport_register); 6287 6288 /** 6289 * qla_tgt_lport_deregister - Degister lport 6290 * 6291 * @vha: Registered scsi_qla_host pointer 6292 */ 6293 void qlt_lport_deregister(struct scsi_qla_host *vha) 6294 { 6295 struct qla_hw_data *ha = vha->hw; 6296 struct Scsi_Host *sh = vha->host; 6297 /* 6298 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6299 */ 6300 vha->vha_tgt.target_lport_ptr = NULL; 6301 ha->tgt.tgt_ops = NULL; 6302 /* 6303 * Release the Scsi_Host reference for the underlying qla2xxx host 6304 */ 6305 scsi_host_put(sh); 6306 } 6307 EXPORT_SYMBOL(qlt_lport_deregister); 6308 6309 /* Must be called under HW lock */ 6310 static void qlt_set_mode(struct scsi_qla_host *vha) 6311 { 6312 switch (ql2x_ini_mode) { 6313 case QLA2XXX_INI_MODE_DISABLED: 6314 case QLA2XXX_INI_MODE_EXCLUSIVE: 6315 vha->host->active_mode = MODE_TARGET; 6316 break; 6317 case QLA2XXX_INI_MODE_ENABLED: 6318 vha->host->active_mode = MODE_UNKNOWN; 6319 break; 6320 case QLA2XXX_INI_MODE_DUAL: 6321 vha->host->active_mode = MODE_DUAL; 6322 break; 6323 default: 6324 break; 6325 } 6326 } 6327 6328 /* Must be called under HW lock */ 6329 static void qlt_clear_mode(struct scsi_qla_host *vha) 6330 { 6331 switch (ql2x_ini_mode) { 6332 case QLA2XXX_INI_MODE_DISABLED: 6333 vha->host->active_mode = MODE_UNKNOWN; 6334 break; 6335 case QLA2XXX_INI_MODE_EXCLUSIVE: 6336 vha->host->active_mode = MODE_INITIATOR; 6337 break; 6338 case QLA2XXX_INI_MODE_ENABLED: 6339 case QLA2XXX_INI_MODE_DUAL: 6340 vha->host->active_mode = MODE_INITIATOR; 6341 break; 6342 default: 6343 break; 6344 } 6345 } 6346 6347 /* 6348 * qla_tgt_enable_vha - NO LOCK HELD 6349 * 6350 * host_reset, bring up w/ Target Mode Enabled 6351 */ 6352 void 6353 qlt_enable_vha(struct scsi_qla_host *vha) 6354 { 6355 struct qla_hw_data *ha = vha->hw; 6356 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6357 unsigned long flags; 6358 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6359 6360 if (!tgt) { 6361 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6362 "Unable to locate qla_tgt pointer from" 6363 " struct qla_hw_data\n"); 6364 dump_stack(); 6365 return; 6366 } 6367 6368 spin_lock_irqsave(&ha->hardware_lock, flags); 6369 tgt->tgt_stopped = 0; 6370 qlt_set_mode(vha); 6371 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6372 6373 if (vha->vp_idx) { 6374 qla24xx_disable_vp(vha); 6375 qla24xx_enable_vp(vha); 6376 } else { 6377 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6378 qla2xxx_wake_dpc(base_vha); 6379 qla2x00_wait_for_hba_online(base_vha); 6380 } 6381 } 6382 EXPORT_SYMBOL(qlt_enable_vha); 6383 6384 /* 6385 * qla_tgt_disable_vha - NO LOCK HELD 6386 * 6387 * Disable Target Mode and reset the adapter 6388 */ 6389 static void qlt_disable_vha(struct scsi_qla_host *vha) 6390 { 6391 struct qla_hw_data *ha = vha->hw; 6392 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6393 unsigned long flags; 6394 6395 if (!tgt) { 6396 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6397 "Unable to locate qla_tgt pointer from" 6398 " struct qla_hw_data\n"); 6399 dump_stack(); 6400 return; 6401 } 6402 6403 spin_lock_irqsave(&ha->hardware_lock, flags); 6404 qlt_clear_mode(vha); 6405 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6406 6407 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6408 qla2xxx_wake_dpc(vha); 6409 qla2x00_wait_for_hba_online(vha); 6410 } 6411 6412 /* 6413 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6414 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6415 * members. 6416 */ 6417 void 6418 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6419 { 6420 vha->vha_tgt.qla_tgt = NULL; 6421 6422 mutex_init(&vha->vha_tgt.tgt_mutex); 6423 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6424 6425 qlt_clear_mode(vha); 6426 6427 /* 6428 * NOTE: Currently the value is kept the same for <24xx and 6429 * >=24xx ISPs. If it is necessary to change it, 6430 * the check should be added for specific ISPs, 6431 * assigning the value appropriately. 6432 */ 6433 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6434 6435 qlt_add_target(ha, vha); 6436 } 6437 6438 void 6439 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) 6440 { 6441 /* 6442 * FC-4 Feature bit 0 indicates target functionality to the name server. 6443 */ 6444 if (qla_tgt_mode_enabled(vha)) { 6445 ct_req->req.rff_id.fc4_feature = BIT_0; 6446 } else if (qla_ini_mode_enabled(vha)) { 6447 ct_req->req.rff_id.fc4_feature = BIT_1; 6448 } else if (qla_dual_mode_enabled(vha)) 6449 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; 6450 } 6451 6452 /* 6453 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6454 * @ha: HA context 6455 * 6456 * Beginning of ATIO ring has initialization control block already built 6457 * by nvram config routine. 6458 * 6459 * Returns 0 on success. 6460 */ 6461 void 6462 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6463 { 6464 struct qla_hw_data *ha = vha->hw; 6465 uint16_t cnt; 6466 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6467 6468 if (qla_ini_mode_enabled(vha)) 6469 return; 6470 6471 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6472 pkt->u.raw.signature = ATIO_PROCESSED; 6473 pkt++; 6474 } 6475 6476 } 6477 6478 /* 6479 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6480 * @ha: SCSI driver HA context 6481 */ 6482 void 6483 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6484 { 6485 struct qla_hw_data *ha = vha->hw; 6486 struct atio_from_isp *pkt; 6487 int cnt, i; 6488 6489 if (!ha->flags.fw_started) 6490 return; 6491 6492 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 6493 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 6494 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6495 cnt = pkt->u.raw.entry_count; 6496 6497 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 6498 /* 6499 * This packet is corrupted. The header + payload 6500 * can not be trusted. There is no point in passing 6501 * it further up. 6502 */ 6503 ql_log(ql_log_warn, vha, 0xd03c, 6504 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 6505 pkt->u.isp24.fcp_hdr.s_id, 6506 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 6507 le32_to_cpu(pkt->u.isp24.exchange_addr), pkt); 6508 6509 adjust_corrupted_atio(pkt); 6510 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 6511 ha_locked, 0); 6512 } else { 6513 qlt_24xx_atio_pkt_all_vps(vha, 6514 (struct atio_from_isp *)pkt, ha_locked); 6515 } 6516 6517 for (i = 0; i < cnt; i++) { 6518 ha->tgt.atio_ring_index++; 6519 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6520 ha->tgt.atio_ring_index = 0; 6521 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6522 } else 6523 ha->tgt.atio_ring_ptr++; 6524 6525 pkt->u.raw.signature = ATIO_PROCESSED; 6526 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6527 } 6528 wmb(); 6529 } 6530 6531 /* Adjust ring index */ 6532 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6533 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha)); 6534 } 6535 6536 void 6537 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6538 { 6539 struct qla_hw_data *ha = vha->hw; 6540 if (!QLA_TGT_MODE_ENABLED()) 6541 return; 6542 6543 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6544 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6545 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6546 6547 if (IS_ATIO_MSIX_CAPABLE(ha)) { 6548 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6549 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6550 6551 icb->msix_atio = cpu_to_le16(msix->entry); 6552 ql_dbg(ql_dbg_init, vha, 0xf072, 6553 "Registering ICB vector 0x%x for atio que.\n", 6554 msix->entry); 6555 } 6556 } 6557 6558 void 6559 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6560 { 6561 struct qla_hw_data *ha = vha->hw; 6562 6563 if (!QLA_TGT_MODE_ENABLED()) 6564 return; 6565 6566 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6567 if (!ha->tgt.saved_set) { 6568 /* We save only once */ 6569 ha->tgt.saved_exchange_count = nv->exchange_count; 6570 ha->tgt.saved_firmware_options_1 = 6571 nv->firmware_options_1; 6572 ha->tgt.saved_firmware_options_2 = 6573 nv->firmware_options_2; 6574 ha->tgt.saved_firmware_options_3 = 6575 nv->firmware_options_3; 6576 ha->tgt.saved_set = 1; 6577 } 6578 6579 if (qla_tgt_mode_enabled(vha)) 6580 nv->exchange_count = cpu_to_le16(0xFFFF); 6581 else /* dual */ 6582 nv->exchange_count = cpu_to_le16(ql2xexchoffld); 6583 6584 /* Enable target mode */ 6585 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6586 6587 /* Disable ini mode, if requested */ 6588 if (qla_tgt_mode_enabled(vha)) 6589 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6590 6591 /* Disable Full Login after LIP */ 6592 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6593 /* Enable initial LIP */ 6594 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6595 if (ql2xtgt_tape_enable) 6596 /* Enable FC Tape support */ 6597 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6598 else 6599 /* Disable FC Tape support */ 6600 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6601 6602 /* Disable Full Login after LIP */ 6603 nv->host_p &= cpu_to_le32(~BIT_10); 6604 6605 /* 6606 * clear BIT 15 explicitly as we have seen at least 6607 * a couple of instances where this was set and this 6608 * was causing the firmware to not be initialized. 6609 */ 6610 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6611 /* Enable target PRLI control */ 6612 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6613 } else { 6614 if (ha->tgt.saved_set) { 6615 nv->exchange_count = ha->tgt.saved_exchange_count; 6616 nv->firmware_options_1 = 6617 ha->tgt.saved_firmware_options_1; 6618 nv->firmware_options_2 = 6619 ha->tgt.saved_firmware_options_2; 6620 nv->firmware_options_3 = 6621 ha->tgt.saved_firmware_options_3; 6622 } 6623 return; 6624 } 6625 6626 if (ha->base_qpair->enable_class_2) { 6627 if (vha->flags.init_done) 6628 fc_host_supported_classes(vha->host) = 6629 FC_COS_CLASS2 | FC_COS_CLASS3; 6630 6631 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6632 } else { 6633 if (vha->flags.init_done) 6634 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6635 6636 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6637 } 6638 } 6639 6640 void 6641 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6642 struct init_cb_24xx *icb) 6643 { 6644 struct qla_hw_data *ha = vha->hw; 6645 6646 if (!QLA_TGT_MODE_ENABLED()) 6647 return; 6648 6649 if (ha->tgt.node_name_set) { 6650 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6651 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6652 } 6653 6654 /* disable ZIO at start time. */ 6655 if (!vha->flags.init_done) { 6656 uint32_t tmp; 6657 tmp = le32_to_cpu(icb->firmware_options_2); 6658 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6659 icb->firmware_options_2 = cpu_to_le32(tmp); 6660 } 6661 } 6662 6663 void 6664 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6665 { 6666 struct qla_hw_data *ha = vha->hw; 6667 6668 if (!QLA_TGT_MODE_ENABLED()) 6669 return; 6670 6671 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 6672 if (!ha->tgt.saved_set) { 6673 /* We save only once */ 6674 ha->tgt.saved_exchange_count = nv->exchange_count; 6675 ha->tgt.saved_firmware_options_1 = 6676 nv->firmware_options_1; 6677 ha->tgt.saved_firmware_options_2 = 6678 nv->firmware_options_2; 6679 ha->tgt.saved_firmware_options_3 = 6680 nv->firmware_options_3; 6681 ha->tgt.saved_set = 1; 6682 } 6683 6684 if (qla_tgt_mode_enabled(vha)) 6685 nv->exchange_count = cpu_to_le16(0xFFFF); 6686 else /* dual */ 6687 nv->exchange_count = cpu_to_le16(ql2xexchoffld); 6688 6689 /* Enable target mode */ 6690 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6691 6692 /* Disable ini mode, if requested */ 6693 if (qla_tgt_mode_enabled(vha)) 6694 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6695 /* Disable Full Login after LIP */ 6696 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6697 /* Enable initial LIP */ 6698 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6699 /* 6700 * clear BIT 15 explicitly as we have seen at 6701 * least a couple of instances where this was set 6702 * and this was causing the firmware to not be 6703 * initialized. 6704 */ 6705 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 6706 if (ql2xtgt_tape_enable) 6707 /* Enable FC tape support */ 6708 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6709 else 6710 /* Disable FC tape support */ 6711 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6712 6713 /* Disable Full Login after LIP */ 6714 nv->host_p &= cpu_to_le32(~BIT_10); 6715 /* Enable target PRLI control */ 6716 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6717 } else { 6718 if (ha->tgt.saved_set) { 6719 nv->exchange_count = ha->tgt.saved_exchange_count; 6720 nv->firmware_options_1 = 6721 ha->tgt.saved_firmware_options_1; 6722 nv->firmware_options_2 = 6723 ha->tgt.saved_firmware_options_2; 6724 nv->firmware_options_3 = 6725 ha->tgt.saved_firmware_options_3; 6726 } 6727 return; 6728 } 6729 6730 if (ha->base_qpair->enable_class_2) { 6731 if (vha->flags.init_done) 6732 fc_host_supported_classes(vha->host) = 6733 FC_COS_CLASS2 | FC_COS_CLASS3; 6734 6735 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6736 } else { 6737 if (vha->flags.init_done) 6738 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6739 6740 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6741 } 6742 } 6743 6744 void 6745 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6746 struct init_cb_81xx *icb) 6747 { 6748 struct qla_hw_data *ha = vha->hw; 6749 6750 if (!QLA_TGT_MODE_ENABLED()) 6751 return; 6752 6753 if (ha->tgt.node_name_set) { 6754 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6755 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6756 } 6757 6758 /* disable ZIO at start time. */ 6759 if (!vha->flags.init_done) { 6760 uint32_t tmp; 6761 tmp = le32_to_cpu(icb->firmware_options_2); 6762 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6763 icb->firmware_options_2 = cpu_to_le32(tmp); 6764 } 6765 6766 } 6767 6768 void 6769 qlt_83xx_iospace_config(struct qla_hw_data *ha) 6770 { 6771 if (!QLA_TGT_MODE_ENABLED()) 6772 return; 6773 6774 ha->msix_count += 1; /* For ATIO Q */ 6775 } 6776 6777 6778 void 6779 qlt_modify_vp_config(struct scsi_qla_host *vha, 6780 struct vp_config_entry_24xx *vpmod) 6781 { 6782 /* enable target mode. Bit5 = 1 => disable */ 6783 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 6784 vpmod->options_idx1 &= ~BIT_5; 6785 6786 /* Disable ini mode, if requested. bit4 = 1 => disable */ 6787 if (qla_tgt_mode_enabled(vha)) 6788 vpmod->options_idx1 &= ~BIT_4; 6789 } 6790 6791 void 6792 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6793 { 6794 int rc; 6795 6796 if (!QLA_TGT_MODE_ENABLED()) 6797 return; 6798 6799 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6800 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6801 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6802 } else { 6803 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6804 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6805 } 6806 6807 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6808 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 6809 6810 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 6811 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 6812 qlt_unknown_atio_work_fn); 6813 6814 qlt_clear_mode(base_vha); 6815 6816 rc = btree_init32(&ha->tgt.host_map); 6817 if (rc) 6818 ql_log(ql_log_info, base_vha, 0xd03d, 6819 "Unable to initialize ha->host_map btree\n"); 6820 6821 qlt_update_vp_map(base_vha, SET_VP_IDX); 6822 } 6823 6824 irqreturn_t 6825 qla83xx_msix_atio_q(int irq, void *dev_id) 6826 { 6827 struct rsp_que *rsp; 6828 scsi_qla_host_t *vha; 6829 struct qla_hw_data *ha; 6830 unsigned long flags; 6831 6832 rsp = (struct rsp_que *) dev_id; 6833 ha = rsp->hw; 6834 vha = pci_get_drvdata(ha->pdev); 6835 6836 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6837 6838 qlt_24xx_process_atio_queue(vha, 0); 6839 6840 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6841 6842 return IRQ_HANDLED; 6843 } 6844 6845 static void 6846 qlt_handle_abts_recv_work(struct work_struct *work) 6847 { 6848 struct qla_tgt_sess_op *op = container_of(work, 6849 struct qla_tgt_sess_op, work); 6850 scsi_qla_host_t *vha = op->vha; 6851 struct qla_hw_data *ha = vha->hw; 6852 unsigned long flags; 6853 6854 if (qla2x00_reset_active(vha) || 6855 (op->chip_reset != ha->base_qpair->chip_reset)) 6856 return; 6857 6858 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6859 qlt_24xx_process_atio_queue(vha, 0); 6860 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6861 6862 spin_lock_irqsave(&ha->hardware_lock, flags); 6863 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 6864 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6865 6866 kfree(op); 6867 } 6868 6869 void 6870 qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 6871 response_t *pkt) 6872 { 6873 struct qla_tgt_sess_op *op; 6874 6875 op = kzalloc(sizeof(*op), GFP_ATOMIC); 6876 6877 if (!op) { 6878 /* do not reach for ATIO queue here. This is best effort err 6879 * recovery at this point. 6880 */ 6881 qlt_response_pkt_all_vps(vha, rsp, pkt); 6882 return; 6883 } 6884 6885 memcpy(&op->atio, pkt, sizeof(*pkt)); 6886 op->vha = vha; 6887 op->chip_reset = vha->hw->base_qpair->chip_reset; 6888 op->rsp = rsp; 6889 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 6890 queue_work(qla_tgt_wq, &op->work); 6891 return; 6892 } 6893 6894 int 6895 qlt_mem_alloc(struct qla_hw_data *ha) 6896 { 6897 if (!QLA_TGT_MODE_ENABLED()) 6898 return 0; 6899 6900 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * 6901 MAX_MULTI_ID_FABRIC, GFP_KERNEL); 6902 if (!ha->tgt.tgt_vp_map) 6903 return -ENOMEM; 6904 6905 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 6906 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 6907 &ha->tgt.atio_dma, GFP_KERNEL); 6908 if (!ha->tgt.atio_ring) { 6909 kfree(ha->tgt.tgt_vp_map); 6910 return -ENOMEM; 6911 } 6912 return 0; 6913 } 6914 6915 void 6916 qlt_mem_free(struct qla_hw_data *ha) 6917 { 6918 if (!QLA_TGT_MODE_ENABLED()) 6919 return; 6920 6921 if (ha->tgt.atio_ring) { 6922 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 6923 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 6924 ha->tgt.atio_dma); 6925 } 6926 kfree(ha->tgt.tgt_vp_map); 6927 } 6928 6929 /* vport_slock to be held by the caller */ 6930 void 6931 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 6932 { 6933 void *slot; 6934 u32 key; 6935 int rc; 6936 6937 if (!QLA_TGT_MODE_ENABLED()) 6938 return; 6939 6940 key = vha->d_id.b24; 6941 6942 switch (cmd) { 6943 case SET_VP_IDX: 6944 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 6945 break; 6946 case SET_AL_PA: 6947 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 6948 if (!slot) { 6949 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf018, 6950 "Save vha in host_map %p %06x\n", vha, key); 6951 rc = btree_insert32(&vha->hw->tgt.host_map, 6952 key, vha, GFP_ATOMIC); 6953 if (rc) 6954 ql_log(ql_log_info, vha, 0xd03e, 6955 "Unable to insert s_id into host_map: %06x\n", 6956 key); 6957 return; 6958 } 6959 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 6960 "replace existing vha in host_map %p %06x\n", vha, key); 6961 btree_update32(&vha->hw->tgt.host_map, key, vha); 6962 break; 6963 case RESET_VP_IDX: 6964 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 6965 break; 6966 case RESET_AL_PA: 6967 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 6968 "clear vha in host_map %p %06x\n", vha, key); 6969 slot = btree_lookup32(&vha->hw->tgt.host_map, key); 6970 if (slot) 6971 btree_remove32(&vha->hw->tgt.host_map, key); 6972 vha->d_id.b24 = 0; 6973 break; 6974 } 6975 } 6976 6977 void qlt_update_host_map(struct scsi_qla_host *vha, port_id_t id) 6978 { 6979 unsigned long flags; 6980 struct qla_hw_data *ha = vha->hw; 6981 6982 if (!vha->d_id.b24) { 6983 spin_lock_irqsave(&ha->vport_slock, flags); 6984 vha->d_id = id; 6985 qlt_update_vp_map(vha, SET_AL_PA); 6986 spin_unlock_irqrestore(&ha->vport_slock, flags); 6987 } else if (vha->d_id.b24 != id.b24) { 6988 spin_lock_irqsave(&ha->vport_slock, flags); 6989 qlt_update_vp_map(vha, RESET_AL_PA); 6990 vha->d_id = id; 6991 qlt_update_vp_map(vha, SET_AL_PA); 6992 spin_unlock_irqrestore(&ha->vport_slock, flags); 6993 } 6994 } 6995 6996 static int __init qlt_parse_ini_mode(void) 6997 { 6998 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 6999 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 7000 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 7001 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 7002 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 7003 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 7004 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 7005 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 7006 else 7007 return false; 7008 7009 return true; 7010 } 7011 7012 int __init qlt_init(void) 7013 { 7014 int ret; 7015 7016 if (!qlt_parse_ini_mode()) { 7017 ql_log(ql_log_fatal, NULL, 0xe06b, 7018 "qlt_parse_ini_mode() failed\n"); 7019 return -EINVAL; 7020 } 7021 7022 if (!QLA_TGT_MODE_ENABLED()) 7023 return 0; 7024 7025 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 7026 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 7027 qla_tgt_mgmt_cmd), 0, NULL); 7028 if (!qla_tgt_mgmt_cmd_cachep) { 7029 ql_log(ql_log_fatal, NULL, 0xd04b, 7030 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 7031 return -ENOMEM; 7032 } 7033 7034 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 7035 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 7036 0, NULL); 7037 7038 if (!qla_tgt_plogi_cachep) { 7039 ql_log(ql_log_fatal, NULL, 0xe06d, 7040 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 7041 ret = -ENOMEM; 7042 goto out_mgmt_cmd_cachep; 7043 } 7044 7045 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 7046 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 7047 if (!qla_tgt_mgmt_cmd_mempool) { 7048 ql_log(ql_log_fatal, NULL, 0xe06e, 7049 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 7050 ret = -ENOMEM; 7051 goto out_plogi_cachep; 7052 } 7053 7054 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 7055 if (!qla_tgt_wq) { 7056 ql_log(ql_log_fatal, NULL, 0xe06f, 7057 "alloc_workqueue for qla_tgt_wq failed\n"); 7058 ret = -ENOMEM; 7059 goto out_cmd_mempool; 7060 } 7061 /* 7062 * Return 1 to signal that initiator-mode is being disabled 7063 */ 7064 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 7065 7066 out_cmd_mempool: 7067 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7068 out_plogi_cachep: 7069 kmem_cache_destroy(qla_tgt_plogi_cachep); 7070 out_mgmt_cmd_cachep: 7071 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7072 return ret; 7073 } 7074 7075 void qlt_exit(void) 7076 { 7077 if (!QLA_TGT_MODE_ENABLED()) 7078 return; 7079 7080 destroy_workqueue(qla_tgt_wq); 7081 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 7082 kmem_cache_destroy(qla_tgt_plogi_cachep); 7083 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 7084 } 7085