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qla_target.c
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linux-6.19.14/drivers/scsi/qla2xxx/qla_target.c
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 4 * 5 * based on qla2x00t.c code: 6 * 7 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 8 * Copyright (C) 2004 - 2005 Leonid Stoljar 9 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 10 * Copyright (C) 2006 - 2010 ID7 Ltd. 11 * 12 * Forward port and refactoring to modern qla2xxx and target/configfs 13 * 14 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 15 */ 16 17#include <linux/module.h> 18#include <linux/init.h> 19#include <linux/types.h> 20#include <linux/blkdev.h> 21#include <linux/interrupt.h> 22#include <linux/pci.h> 23#include <linux/delay.h> 24#include <linux/list.h> 25#include <linux/workqueue.h> 26#include <linux/unaligned.h> 27#include <scsi/scsi.h> 28#include <scsi/scsi_host.h> 29#include <scsi/scsi_tcq.h> 30 31#include "qla_def.h" 32#include "qla_target.h" 33 34static int ql2xtgt_tape_enable; 35module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 36MODULE_PARM_DESC(ql2xtgt_tape_enable, 37 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 38 39static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 40module_param(qlini_mode, charp, S_IRUGO); 41MODULE_PARM_DESC(qlini_mode, 42 "Determines when initiator mode will be enabled. Possible values: " 43 "\"exclusive\" - initiator mode will be enabled on load, " 44 "disabled on enabling target mode and then on disabling target mode " 45 "enabled back; " 46 "\"disabled\" - initiator mode will never be enabled; " 47 "\"dual\" - Initiator Modes will be enabled. Target Mode can be activated " 48 "when ready " 49 "\"enabled\" (default) - initiator mode will always stay enabled."); 50 51int ql2xuctrlirq = 1; 52module_param(ql2xuctrlirq, int, 0644); 53MODULE_PARM_DESC(ql2xuctrlirq, 54 "User to control IRQ placement via smp_affinity." 55 "Valid with qlini_mode=disabled." 56 "1(default): enable"); 57 58int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 59 60static int qla_sam_status = SAM_STAT_BUSY; 61static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ 62 63/* 64 * From scsi/fc/fc_fcp.h 65 */ 66enum fcp_resp_rsp_codes { 67 FCP_TMF_CMPL = 0, 68 FCP_DATA_LEN_INVALID = 1, 69 FCP_CMND_FIELDS_INVALID = 2, 70 FCP_DATA_PARAM_MISMATCH = 3, 71 FCP_TMF_REJECTED = 4, 72 FCP_TMF_FAILED = 5, 73 FCP_TMF_INVALID_LUN = 9, 74}; 75 76/* 77 * fc_pri_ta from scsi/fc/fc_fcp.h 78 */ 79#define FCP_PTA_SIMPLE 0 /* simple task attribute */ 80#define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 81#define FCP_PTA_ORDERED 2 /* ordered task attribute */ 82#define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 83#define FCP_PTA_MASK 7 /* mask for task attribute field */ 84#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 85#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 86 87/* 88 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 89 * must be called under HW lock and could unlock/lock it inside. 90 * It isn't an issue, since in the current implementation on the time when 91 * those functions are called: 92 * 93 * - Either context is IRQ and only IRQ handler can modify HW data, 94 * including rings related fields, 95 * 96 * - Or access to target mode variables from struct qla_tgt doesn't 97 * cross those functions boundaries, except tgt_stop, which 98 * additionally protected by irq_cmd_count. 99 */ 100/* Predefs for callbacks handed to qla2xxx LLD */ 101static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 102 struct atio_from_isp *pkt, uint8_t); 103static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, 104 response_t *pkt); 105static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 106 int fn, void *iocb, int flags); 107static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 108 struct atio_from_isp *atio, uint16_t status, int qfull); 109static void qlt_disable_vha(struct scsi_qla_host *vha); 110static void qlt_clear_tgt_db(struct qla_tgt *tgt); 111static void qlt_send_notify_ack(struct qla_qpair *qpair, 112 struct imm_ntfy_from_isp *ntfy, 113 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 114 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 115static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 116 struct imm_ntfy_from_isp *imm, int ha_locked); 117static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, 118 fc_port_t *fcport, bool local); 119void qlt_unreg_sess(struct fc_port *sess); 120static void qlt_24xx_handle_abts(struct scsi_qla_host *, 121 struct abts_recv_from_24xx *); 122static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, 123 uint16_t); 124static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); 125static inline uint32_t qlt_make_handle(struct qla_qpair *); 126 127/* 128 * Global Variables 129 */ 130static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 131struct kmem_cache *qla_tgt_plogi_cachep; 132static mempool_t *qla_tgt_mgmt_cmd_mempool; 133static struct workqueue_struct *qla_tgt_wq; 134static DEFINE_MUTEX(qla_tgt_mutex); 135static LIST_HEAD(qla_tgt_glist); 136 137/* This API intentionally takes dest as a parameter, rather than returning 138 * int value to avoid caller forgetting to issue wmb() after the store */ 139void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 140{ 141 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 142 *dest = atomic_inc_return(&base_vha->generation_tick); 143 /* memory barrier */ 144 wmb(); 145} 146 147/* Might release hw lock, then reaquire!! */ 148static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 149{ 150 /* Send marker if required */ 151 if (unlikely(vha->marker_needed != 0)) { 152 int rc = qla2x00_issue_marker(vha, vha_locked); 153 154 if (rc != QLA_SUCCESS) { 155 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 156 "qla_target(%d): issue_marker() failed\n", 157 vha->vp_idx); 158 } 159 return rc; 160 } 161 return QLA_SUCCESS; 162} 163 164struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, 165 be_id_t d_id) 166{ 167 struct scsi_qla_host *host; 168 uint32_t key; 169 170 if (vha->d_id.b.area == d_id.area && 171 vha->d_id.b.domain == d_id.domain && 172 vha->d_id.b.al_pa == d_id.al_pa) 173 return vha; 174 175 key = be_to_port_id(d_id).b24; 176 177 host = btree_lookup32(&vha->hw->host_map, key); 178 if (!host) 179 ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, 180 "Unable to find host %06x\n", key); 181 182 return host; 183} 184 185static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 186{ 187 unsigned long flags; 188 189 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 190 191 vha->hw->tgt.num_pend_cmds++; 192 if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) 193 vha->qla_stats.stat_max_pend_cmds = 194 vha->hw->tgt.num_pend_cmds; 195 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 196} 197static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 198{ 199 unsigned long flags; 200 201 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 202 vha->hw->tgt.num_pend_cmds--; 203 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 204} 205 206 207static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, 208 struct atio_from_isp *atio, uint8_t ha_locked) 209{ 210 struct qla_tgt_sess_op *u; 211 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 212 unsigned long flags; 213 unsigned int add_cdb_len = 0; 214 215 /* atio must be the last member of qla_tgt_sess_op for add_cdb_len */ 216 BUILD_BUG_ON(offsetof(struct qla_tgt_sess_op, atio) + sizeof(u->atio) != sizeof(*u)); 217 218 if (tgt->tgt_stop) { 219 ql_dbg(ql_dbg_async, vha, 0x502c, 220 "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", 221 vha->vp_idx); 222 goto out_term; 223 } 224 225 if (atio->u.raw.entry_type == ATIO_TYPE7 && 226 atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0) 227 add_cdb_len = 228 ((unsigned int) atio->u.isp24.fcp_cmnd.add_cdb_len) * 4; 229 230 u = kzalloc(sizeof(*u) + add_cdb_len, GFP_ATOMIC); 231 if (u == NULL) 232 goto out_term; 233 234 u->vha = vha; 235 memcpy(&u->atio, atio, sizeof(*atio) + add_cdb_len); 236 INIT_LIST_HEAD(&u->cmd_list); 237 238 spin_lock_irqsave(&vha->cmd_list_lock, flags); 239 list_add_tail(&u->cmd_list, &vha->unknown_atio_list); 240 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 241 242 schedule_delayed_work(&vha->unknown_atio_work, 1); 243 244out: 245 return; 246 247out_term: 248 qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked); 249 goto out; 250} 251 252static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, 253 uint8_t ha_locked) 254{ 255 struct qla_tgt_sess_op *u, *t; 256 scsi_qla_host_t *host; 257 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 258 unsigned long flags; 259 uint8_t queued = 0; 260 261 list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { 262 if (u->aborted) { 263 ql_dbg(ql_dbg_async, vha, 0x502e, 264 "Freeing unknown %s %p, because of Abort\n", 265 "ATIO_TYPE7", u); 266 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 267 &u->atio, ha_locked); 268 goto abort; 269 } 270 271 host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); 272 if (host != NULL) { 273 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, 274 "Requeuing unknown ATIO_TYPE7 %p\n", u); 275 qlt_24xx_atio_pkt(host, &u->atio, ha_locked); 276 } else if (tgt->tgt_stop) { 277 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, 278 "Freeing unknown %s %p, because tgt is being stopped\n", 279 "ATIO_TYPE7", u); 280 qlt_send_term_exchange(vha->hw->base_qpair, NULL, 281 &u->atio, ha_locked); 282 } else { 283 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, 284 "Reschedule u %p, vha %p, host %p\n", u, vha, host); 285 if (!queued) { 286 queued = 1; 287 schedule_delayed_work(&vha->unknown_atio_work, 288 1); 289 } 290 continue; 291 } 292 293abort: 294 spin_lock_irqsave(&vha->cmd_list_lock, flags); 295 list_del(&u->cmd_list); 296 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 297 kfree(u); 298 } 299} 300 301void qlt_unknown_atio_work_fn(struct work_struct *work) 302{ 303 struct scsi_qla_host *vha = container_of(to_delayed_work(work), 304 struct scsi_qla_host, unknown_atio_work); 305 306 qlt_try_to_dequeue_unknown_atios(vha, 0); 307} 308 309static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 310 struct atio_from_isp *atio, uint8_t ha_locked) 311{ 312 ql_dbg(ql_dbg_tgt, vha, 0xe072, 313 "%s: qla_target(%d): type %x ox_id %04x\n", 314 __func__, vha->vp_idx, atio->u.raw.entry_type, 315 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 316 317 switch (atio->u.raw.entry_type) { 318 case ATIO_TYPE7: 319 { 320 struct scsi_qla_host *host = qla_find_host_by_d_id(vha, 321 atio->u.isp24.fcp_hdr.d_id); 322 if (unlikely(NULL == host)) { 323 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 324 "qla_target(%d): Received ATIO_TYPE7 " 325 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 326 atio->u.isp24.fcp_hdr.d_id.domain, 327 atio->u.isp24.fcp_hdr.d_id.area, 328 atio->u.isp24.fcp_hdr.d_id.al_pa); 329 330 331 qlt_queue_unknown_atio(vha, atio, ha_locked); 332 break; 333 } 334 if (unlikely(!list_empty(&vha->unknown_atio_list))) 335 qlt_try_to_dequeue_unknown_atios(vha, ha_locked); 336 337 qlt_24xx_atio_pkt(host, atio, ha_locked); 338 break; 339 } 340 341 case IMMED_NOTIFY_TYPE: 342 { 343 struct scsi_qla_host *host = vha; 344 struct imm_ntfy_from_isp *entry = 345 (struct imm_ntfy_from_isp *)atio; 346 347 qlt_issue_marker(vha, ha_locked); 348 349 if ((entry->u.isp24.vp_index != 0xFF) && 350 (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { 351 host = qla_find_host_by_vp_idx(vha, 352 entry->u.isp24.vp_index); 353 if (unlikely(!host)) { 354 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 355 "qla_target(%d): Received " 356 "ATIO (IMMED_NOTIFY_TYPE) " 357 "with unknown vp_index %d\n", 358 vha->vp_idx, entry->u.isp24.vp_index); 359 break; 360 } 361 } 362 qlt_24xx_atio_pkt(host, atio, ha_locked); 363 break; 364 } 365 366 case VP_RPT_ID_IOCB_TYPE: 367 qla24xx_report_id_acquisition(vha, 368 (struct vp_rpt_id_entry_24xx *)atio); 369 break; 370 371 case ABTS_RECV_24XX: 372 { 373 struct abts_recv_from_24xx *entry = 374 (struct abts_recv_from_24xx *)atio; 375 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 376 entry->vp_index); 377 unsigned long flags; 378 379 if (unlikely(!host)) { 380 ql_dbg(ql_dbg_tgt, vha, 0xe00a, 381 "qla_target(%d): Response pkt (ABTS_RECV_24XX) " 382 "received, with unknown vp_index %d\n", 383 vha->vp_idx, entry->vp_index); 384 break; 385 } 386 if (!ha_locked) 387 spin_lock_irqsave(&host->hw->hardware_lock, flags); 388 qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); 389 if (!ha_locked) 390 spin_unlock_irqrestore(&host->hw->hardware_lock, flags); 391 break; 392 } 393 394 /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ 395 396 default: 397 ql_dbg(ql_dbg_tgt, vha, 0xe040, 398 "qla_target(%d): Received unknown ATIO atio " 399 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 400 break; 401 } 402 403 return false; 404} 405 406void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, 407 struct rsp_que *rsp, response_t *pkt) 408{ 409 switch (pkt->entry_type) { 410 case CTIO_CRC2: 411 ql_dbg(ql_dbg_tgt, vha, 0xe073, 412 "qla_target(%d):%s: CRC2 Response pkt\n", 413 vha->vp_idx, __func__); 414 fallthrough; 415 case CTIO_TYPE7: 416 { 417 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 418 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 419 entry->vp_index); 420 if (unlikely(!host)) { 421 ql_dbg(ql_dbg_tgt, vha, 0xe041, 422 "qla_target(%d): Response pkt (CTIO_TYPE7) " 423 "received, with unknown vp_index %d\n", 424 vha->vp_idx, entry->vp_index); 425 break; 426 } 427 qlt_response_pkt(host, rsp, pkt); 428 break; 429 } 430 431 case IMMED_NOTIFY_TYPE: 432 { 433 struct scsi_qla_host *host; 434 struct imm_ntfy_from_isp *entry = 435 (struct imm_ntfy_from_isp *)pkt; 436 437 host = qla_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 438 if (unlikely(!host)) { 439 ql_dbg(ql_dbg_tgt, vha, 0xe042, 440 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 441 "received, with unknown vp_index %d\n", 442 vha->vp_idx, entry->u.isp24.vp_index); 443 break; 444 } 445 qlt_response_pkt(host, rsp, pkt); 446 break; 447 } 448 449 case NOTIFY_ACK_TYPE: 450 { 451 struct scsi_qla_host *host = vha; 452 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 453 454 if (0xFF != entry->u.isp24.vp_index) { 455 host = qla_find_host_by_vp_idx(vha, 456 entry->u.isp24.vp_index); 457 if (unlikely(!host)) { 458 ql_dbg(ql_dbg_tgt, vha, 0xe043, 459 "qla_target(%d): Response " 460 "pkt (NOTIFY_ACK_TYPE) " 461 "received, with unknown " 462 "vp_index %d\n", vha->vp_idx, 463 entry->u.isp24.vp_index); 464 break; 465 } 466 } 467 qlt_response_pkt(host, rsp, pkt); 468 break; 469 } 470 471 case ABTS_RECV_24XX: 472 { 473 struct abts_recv_from_24xx *entry = 474 (struct abts_recv_from_24xx *)pkt; 475 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 476 entry->vp_index); 477 if (unlikely(!host)) { 478 ql_dbg(ql_dbg_tgt, vha, 0xe044, 479 "qla_target(%d): Response pkt " 480 "(ABTS_RECV_24XX) received, with unknown " 481 "vp_index %d\n", vha->vp_idx, entry->vp_index); 482 break; 483 } 484 qlt_response_pkt(host, rsp, pkt); 485 break; 486 } 487 488 case ABTS_RESP_24XX: 489 { 490 struct abts_resp_to_24xx *entry = 491 (struct abts_resp_to_24xx *)pkt; 492 struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, 493 entry->vp_index); 494 if (unlikely(!host)) { 495 ql_dbg(ql_dbg_tgt, vha, 0xe045, 496 "qla_target(%d): Response pkt " 497 "(ABTS_RECV_24XX) received, with unknown " 498 "vp_index %d\n", vha->vp_idx, entry->vp_index); 499 break; 500 } 501 qlt_response_pkt(host, rsp, pkt); 502 break; 503 } 504 default: 505 qlt_response_pkt(vha, rsp, pkt); 506 break; 507 } 508 509} 510 511/* 512 * All qlt_plogi_ack_t operations are protected by hardware_lock 513 */ 514static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, 515 struct imm_ntfy_from_isp *ntfy, int type) 516{ 517 struct qla_work_evt *e; 518 519 e = qla2x00_alloc_work(vha, QLA_EVT_NACK); 520 if (!e) 521 return QLA_FUNCTION_FAILED; 522 523 e->u.nack.fcport = fcport; 524 e->u.nack.type = type; 525 memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); 526 return qla2x00_post_work(vha, e); 527} 528 529static void qla2x00_async_nack_sp_done(srb_t *sp, int res) 530{ 531 struct scsi_qla_host *vha = sp->vha; 532 unsigned long flags; 533 534 ql_dbg(ql_dbg_disc, vha, 0x20f2, 535 "Async done-%s res %x %8phC type %d\n", 536 sp->name, res, sp->fcport->port_name, sp->type); 537 538 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 539 sp->fcport->flags &= ~FCF_ASYNC_SENT; 540 sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; 541 542 switch (sp->type) { 543 case SRB_NACK_PLOGI: 544 sp->fcport->login_gen++; 545 sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; 546 sp->fcport->logout_on_delete = 1; 547 sp->fcport->plogi_nack_done_deadline = jiffies + HZ; 548 sp->fcport->send_els_logo = 0; 549 550 if (sp->fcport->flags & FCF_FCSP_DEVICE) { 551 ql_dbg(ql_dbg_edif, vha, 0x20ef, 552 "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, 553 sp->fcport->port_name); 554 qla2x00_set_fcport_disc_state(sp->fcport, 555 DSC_LOGIN_AUTH_PEND); 556 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 557 sp->fcport->d_id.b24); 558 qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, 559 0, sp->fcport); 560 } 561 break; 562 563 case SRB_NACK_PRLI: 564 sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; 565 sp->fcport->deleted = 0; 566 sp->fcport->send_els_logo = 0; 567 568 if (!sp->fcport->login_succ && 569 !IS_SW_RESV_ADDR(sp->fcport->d_id)) { 570 sp->fcport->login_succ = 1; 571 572 vha->fcport_count++; 573 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 574 qla24xx_sched_upd_fcport(sp->fcport); 575 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 576 } else { 577 sp->fcport->login_retry = 0; 578 qla2x00_set_fcport_disc_state(sp->fcport, 579 DSC_LOGIN_COMPLETE); 580 sp->fcport->deleted = 0; 581 sp->fcport->logout_on_delete = 1; 582 } 583 break; 584 585 case SRB_NACK_LOGO: 586 sp->fcport->login_gen++; 587 sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; 588 qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); 589 break; 590 } 591 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 592 593 kref_put(&sp->cmd_kref, qla2x00_sp_release); 594} 595 596int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, 597 struct imm_ntfy_from_isp *ntfy, int type) 598{ 599 int rval = QLA_FUNCTION_FAILED; 600 srb_t *sp; 601 char *c = NULL; 602 603 fcport->flags |= FCF_ASYNC_SENT; 604 switch (type) { 605 case SRB_NACK_PLOGI: 606 fcport->fw_login_state = DSC_LS_PLOGI_PEND; 607 c = "PLOGI"; 608 if (vha->hw->flags.edif_enabled && 609 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) 610 fcport->flags |= FCF_FCSP_DEVICE; 611 break; 612 case SRB_NACK_PRLI: 613 fcport->fw_login_state = DSC_LS_PRLI_PEND; 614 fcport->deleted = 0; 615 c = "PRLI"; 616 break; 617 case SRB_NACK_LOGO: 618 fcport->fw_login_state = DSC_LS_LOGO_PEND; 619 c = "LOGO"; 620 break; 621 } 622 623 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 624 if (!sp) 625 goto done; 626 627 sp->type = type; 628 sp->name = "nack"; 629 qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, 630 qla2x00_async_nack_sp_done); 631 632 sp->u.iocb_cmd.u.nack.ntfy = ntfy; 633 634 ql_dbg(ql_dbg_disc, vha, 0x20f4, 635 "Async-%s %8phC hndl %x %s\n", 636 sp->name, fcport->port_name, sp->handle, c); 637 638 rval = qla2x00_start_sp(sp); 639 if (rval != QLA_SUCCESS) 640 goto done_free_sp; 641 642 return rval; 643 644done_free_sp: 645 kref_put(&sp->cmd_kref, qla2x00_sp_release); 646done: 647 fcport->flags &= ~FCF_ASYNC_SENT; 648 return rval; 649} 650 651void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) 652{ 653 fc_port_t *t; 654 655 switch (e->u.nack.type) { 656 case SRB_NACK_PRLI: 657 t = e->u.nack.fcport; 658 flush_work(&t->del_work); 659 flush_work(&t->free_work); 660 mutex_lock(&vha->vha_tgt.tgt_mutex); 661 t = qlt_create_sess(vha, e->u.nack.fcport, 0); 662 mutex_unlock(&vha->vha_tgt.tgt_mutex); 663 if (t) { 664 ql_log(ql_log_info, vha, 0xd034, 665 "%s create sess success %p", __func__, t); 666 /* create sess has an extra kref */ 667 vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); 668 } 669 break; 670 } 671 qla24xx_async_notify_ack(vha, e->u.nack.fcport, 672 (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); 673} 674 675void qla24xx_delete_sess_fn(struct work_struct *work) 676{ 677 fc_port_t *fcport = container_of(work, struct fc_port, del_work); 678 struct qla_hw_data *ha = NULL; 679 680 if (!fcport || !fcport->vha || !fcport->vha->hw) 681 return; 682 683 ha = fcport->vha->hw; 684 685 if (fcport->se_sess) { 686 ha->tgt.tgt_ops->shutdown_sess(fcport); 687 ha->tgt.tgt_ops->put_sess(fcport); 688 } else { 689 qlt_unreg_sess(fcport); 690 } 691} 692 693/* 694 * Called from qla2x00_reg_remote_port() 695 */ 696void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 697{ 698 struct qla_hw_data *ha = vha->hw; 699 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 700 struct fc_port *sess = fcport; 701 unsigned long flags; 702 703 if (!vha->hw->tgt.tgt_ops) 704 return; 705 706 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 707 if (tgt->tgt_stop) { 708 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 709 return; 710 } 711 712 if (fcport->disc_state == DSC_DELETE_PEND) { 713 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 714 return; 715 } 716 717 if (!sess->se_sess) { 718 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 719 720 mutex_lock(&vha->vha_tgt.tgt_mutex); 721 sess = qlt_create_sess(vha, fcport, false); 722 mutex_unlock(&vha->vha_tgt.tgt_mutex); 723 724 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 725 } else { 726 if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { 727 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 728 return; 729 } 730 731 if (!kref_get_unless_zero(&sess->sess_kref)) { 732 ql_dbg(ql_dbg_disc, vha, 0x2107, 733 "%s: kref_get fail sess %8phC \n", 734 __func__, sess->port_name); 735 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 736 return; 737 } 738 739 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 740 "qla_target(%u): %ssession for port %8phC " 741 "(loop ID %d) reappeared\n", vha->vp_idx, 742 sess->local ? "local " : "", sess->port_name, sess->loop_id); 743 744 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 745 "Reappeared sess %p\n", sess); 746 747 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, 748 fcport->loop_id, 749 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 750 } 751 752 if (sess && sess->local) { 753 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 754 "qla_target(%u): local session for " 755 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 756 fcport->port_name, sess->loop_id); 757 sess->local = 0; 758 } 759 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 760 761 ha->tgt.tgt_ops->put_sess(sess); 762} 763 764/* 765 * This is a zero-base ref-counting solution, since hardware_lock 766 * guarantees that ref_count is not modified concurrently. 767 * Upon successful return content of iocb is undefined 768 */ 769static struct qlt_plogi_ack_t * 770qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 771 struct imm_ntfy_from_isp *iocb) 772{ 773 struct qlt_plogi_ack_t *pla; 774 775 lockdep_assert_held(&vha->hw->hardware_lock); 776 777 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 778 if (pla->id.b24 == id->b24) { 779 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, 780 "%s %d %8phC Term INOT due to new INOT", 781 __func__, __LINE__, 782 pla->iocb.u.isp24.port_name); 783 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 784 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 785 return pla; 786 } 787 } 788 789 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 790 if (!pla) { 791 ql_dbg(ql_dbg_async, vha, 0x5088, 792 "qla_target(%d): Allocation of plogi_ack failed\n", 793 vha->vp_idx); 794 return NULL; 795 } 796 797 memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); 798 pla->id = *id; 799 list_add_tail(&pla->list, &vha->plogi_ack_list); 800 801 return pla; 802} 803 804void qlt_plogi_ack_unref(struct scsi_qla_host *vha, 805 struct qlt_plogi_ack_t *pla) 806{ 807 struct imm_ntfy_from_isp *iocb = &pla->iocb; 808 port_id_t port_id; 809 uint16_t loop_id; 810 fc_port_t *fcport = pla->fcport; 811 812 BUG_ON(!pla->ref_count); 813 pla->ref_count--; 814 815 if (pla->ref_count) 816 return; 817 818 ql_dbg(ql_dbg_disc, vha, 0x5089, 819 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 820 " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, 821 iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], 822 iocb->u.isp24.port_id[0], 823 le16_to_cpu(iocb->u.isp24.nport_handle), 824 iocb->u.isp24.exchange_address, iocb->ox_id); 825 826 port_id.b.domain = iocb->u.isp24.port_id[2]; 827 port_id.b.area = iocb->u.isp24.port_id[1]; 828 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 829 port_id.b.rsvd_1 = 0; 830 831 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 832 833 fcport->loop_id = loop_id; 834 fcport->d_id = port_id; 835 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 836 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); 837 else 838 qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); 839 840 list_for_each_entry(fcport, &vha->vp_fcports, list) { 841 if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) 842 fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 843 if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) 844 fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 845 } 846 847 list_del(&pla->list); 848 kmem_cache_free(qla_tgt_plogi_cachep, pla); 849} 850 851void 852qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, 853 struct fc_port *sess, enum qlt_plogi_link_t link) 854{ 855 struct imm_ntfy_from_isp *iocb = &pla->iocb; 856 /* Inc ref_count first because link might already be pointing at pla */ 857 pla->ref_count++; 858 859 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 860 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 861 " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", 862 sess, link, sess->port_name, 863 iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], 864 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 865 pla->ref_count, pla, link); 866 867 if (link == QLT_PLOGI_LINK_CONFLICT) { 868 switch (sess->disc_state) { 869 case DSC_DELETED: 870 case DSC_DELETE_PEND: 871 pla->ref_count--; 872 return; 873 default: 874 break; 875 } 876 } 877 878 if (sess->plogi_link[link]) 879 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 880 881 if (link == QLT_PLOGI_LINK_SAME_WWN) 882 pla->fcport = sess; 883 884 sess->plogi_link[link] = pla; 885} 886 887typedef struct { 888 /* These fields must be initialized by the caller */ 889 port_id_t id; 890 /* 891 * number of cmds dropped while we were waiting for 892 * initiator to ack LOGO initialize to 1 if LOGO is 893 * triggered by a command, otherwise, to 0 894 */ 895 int cmd_count; 896 897 /* These fields are used by callee */ 898 struct list_head list; 899} qlt_port_logo_t; 900 901static void 902qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 903{ 904 qlt_port_logo_t *tmp; 905 int res; 906 907 if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { 908 res = 0; 909 goto out; 910 } 911 912 mutex_lock(&vha->vha_tgt.tgt_mutex); 913 914 list_for_each_entry(tmp, &vha->logo_list, list) { 915 if (tmp->id.b24 == logo->id.b24) { 916 tmp->cmd_count += logo->cmd_count; 917 mutex_unlock(&vha->vha_tgt.tgt_mutex); 918 return; 919 } 920 } 921 922 list_add_tail(&logo->list, &vha->logo_list); 923 924 mutex_unlock(&vha->vha_tgt.tgt_mutex); 925 926 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 927 928 mutex_lock(&vha->vha_tgt.tgt_mutex); 929 list_del(&logo->list); 930 mutex_unlock(&vha->vha_tgt.tgt_mutex); 931 932out: 933 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 934 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 935 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 936 logo->cmd_count, res); 937} 938 939void qlt_free_session_done(struct work_struct *work) 940{ 941 struct fc_port *sess = container_of(work, struct fc_port, 942 free_work); 943 struct qla_tgt *tgt = sess->tgt; 944 struct scsi_qla_host *vha = sess->vha; 945 struct qla_hw_data *ha = vha->hw; 946 unsigned long flags; 947 bool logout_started = false; 948 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 949 struct qlt_plogi_ack_t *own = 950 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 951 952 ql_dbg(ql_dbg_disc, vha, 0xf084, 953 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 954 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 955 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 956 sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, 957 sess->logout_on_delete, sess->keep_nport_handle, 958 sess->send_els_logo); 959 960 if (!IS_SW_RESV_ADDR(sess->d_id)) { 961 qla2x00_mark_device_lost(vha, sess, 0); 962 963 if (sess->send_els_logo) { 964 qlt_port_logo_t logo; 965 966 logo.id = sess->d_id; 967 logo.cmd_count = 0; 968 INIT_LIST_HEAD(&logo.list); 969 if (!own) 970 qlt_send_first_logo(vha, &logo); 971 sess->send_els_logo = 0; 972 } 973 974 if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { 975 int rc; 976 977 if (!own || 978 (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 979 sess->logout_completed = 0; 980 rc = qla2x00_post_async_logout_work(vha, sess, 981 NULL); 982 if (rc != QLA_SUCCESS) 983 ql_log(ql_log_warn, vha, 0xf085, 984 "Schedule logo failed sess %p rc %d\n", 985 sess, rc); 986 else 987 logout_started = true; 988 } else if (own && (own->iocb.u.isp24.status_subcode == 989 ELS_PRLI) && ha->flags.rida_fmt2) { 990 rc = qla2x00_post_async_prlo_work(vha, sess, 991 NULL); 992 if (rc != QLA_SUCCESS) 993 ql_log(ql_log_warn, vha, 0xf085, 994 "Schedule PRLO failed sess %p rc %d\n", 995 sess, rc); 996 else 997 logout_started = true; 998 } 999 } /* if sess->logout_on_delete */ 1000 1001 if (sess->nvme_flag & NVME_FLAG_REGISTERED && 1002 !(sess->nvme_flag & NVME_FLAG_DELETING)) { 1003 sess->nvme_flag |= NVME_FLAG_DELETING; 1004 qla_nvme_unregister_remote_port(sess); 1005 } 1006 1007 if (ha->flags.edif_enabled && 1008 (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { 1009 sess->edif.authok = 0; 1010 if (!ha->flags.host_shutting_down) { 1011 ql_dbg(ql_dbg_edif, vha, 0x911e, 1012 "%s wwpn %8phC calling qla2x00_release_all_sadb\n", 1013 __func__, sess->port_name); 1014 qla2x00_release_all_sadb(vha, sess); 1015 } else { 1016 ql_dbg(ql_dbg_edif, vha, 0x911e, 1017 "%s bypassing release_all_sadb\n", 1018 __func__); 1019 } 1020 1021 qla_edif_clear_appdata(vha, sess); 1022 qla_edif_sess_down(vha, sess); 1023 } 1024 } 1025 1026 /* 1027 * Release the target session for FC Nexus from fabric module code. 1028 */ 1029 if (sess->se_sess != NULL) 1030 ha->tgt.tgt_ops->free_session(sess); 1031 1032 if (logout_started) { 1033 bool traced = false; 1034 u16 cnt = 0; 1035 1036 while (!READ_ONCE(sess->logout_completed)) { 1037 if (!traced) { 1038 ql_dbg(ql_dbg_disc, vha, 0xf086, 1039 "%s: waiting for sess %p logout\n", 1040 __func__, sess); 1041 traced = true; 1042 } 1043 msleep(100); 1044 cnt++; 1045 /* 1046 * Driver timeout is set to 22 Sec, update count value to loop 1047 * long enough for log-out to complete before advancing. Otherwise, 1048 * straddling logout can interfere with re-login attempt. 1049 */ 1050 if (cnt > 230) 1051 break; 1052 } 1053 1054 ql_dbg(ql_dbg_disc, vha, 0xf087, 1055 "%s: sess %p logout completed\n", __func__, sess); 1056 } 1057 1058 /* check for any straggling io left behind */ 1059 if (!(sess->flags & FCF_FCP2_DEVICE) && 1060 qla2x00_eh_wait_for_pending_commands(sess->vha, sess->d_id.b24, 0, WAIT_TARGET)) { 1061 ql_log(ql_log_warn, vha, 0x3027, 1062 "IO not return. Resetting.\n"); 1063 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1064 qla2xxx_wake_dpc(vha); 1065 qla2x00_wait_for_chip_reset(vha); 1066 } 1067 1068 if (sess->logo_ack_needed) { 1069 sess->logo_ack_needed = 0; 1070 qla24xx_async_notify_ack(vha, sess, 1071 (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); 1072 } 1073 1074 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1075 if (sess->se_sess) { 1076 sess->se_sess = NULL; 1077 if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) 1078 tgt->sess_count--; 1079 } 1080 1081 qla2x00_set_fcport_disc_state(sess, DSC_DELETED); 1082 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1083 1084 if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { 1085 vha->fcport_count--; 1086 sess->login_succ = 0; 1087 } 1088 1089 qla2x00_clear_loop_id(sess); 1090 1091 if (sess->conflict) { 1092 sess->conflict->login_pause = 0; 1093 sess->conflict = NULL; 1094 if (!test_bit(UNLOADING, &vha->dpc_flags)) 1095 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1096 } 1097 1098 { 1099 struct qlt_plogi_ack_t *con = 1100 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 1101 struct imm_ntfy_from_isp *iocb; 1102 1103 own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 1104 1105 if (con) { 1106 iocb = &con->iocb; 1107 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 1108 "se_sess %p / sess %p port %8phC is gone," 1109 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 1110 sess->se_sess, sess, sess->port_name, 1111 own ? "releasing own PLOGI" : "no own PLOGI pending", 1112 own ? own->ref_count : -1, 1113 iocb->u.isp24.port_name, con->ref_count); 1114 qlt_plogi_ack_unref(vha, con); 1115 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; 1116 } else { 1117 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 1118 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 1119 sess->se_sess, sess, sess->port_name, 1120 own ? "releasing own PLOGI" : 1121 "no own PLOGI pending", 1122 own ? own->ref_count : -1); 1123 } 1124 1125 if (own) { 1126 sess->fw_login_state = DSC_LS_PLOGI_PEND; 1127 qlt_plogi_ack_unref(vha, own); 1128 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; 1129 } 1130 } 1131 1132 sess->explicit_logout = 0; 1133 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1134 1135 qla2x00_dfs_remove_rport(vha, sess); 1136 1137 spin_lock_irqsave(&vha->work_lock, flags); 1138 sess->flags &= ~FCF_ASYNC_SENT; 1139 sess->deleted = QLA_SESS_DELETED; 1140 sess->free_pending = 0; 1141 spin_unlock_irqrestore(&vha->work_lock, flags); 1142 1143 ql_dbg(ql_dbg_disc, vha, 0xf001, 1144 "Unregistration of sess %p %8phC finished fcp_cnt %d\n", 1145 sess, sess->port_name, vha->fcport_count); 1146 1147 if (tgt && (tgt->sess_count == 0)) 1148 wake_up_all(&tgt->waitQ); 1149 1150 if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && 1151 !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && 1152 (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { 1153 switch (vha->host->active_mode) { 1154 case MODE_INITIATOR: 1155 case MODE_DUAL: 1156 set_bit(RELOGIN_NEEDED, &vha->dpc_flags); 1157 qla2xxx_wake_dpc(vha); 1158 break; 1159 case MODE_TARGET: 1160 default: 1161 /* no-op */ 1162 break; 1163 } 1164 } 1165 1166 if (vha->fcport_count == 0) 1167 wake_up_all(&vha->fcport_waitQ); 1168} 1169 1170/* ha->tgt.sess_lock supposed to be held on entry */ 1171void qlt_unreg_sess(struct fc_port *sess) 1172{ 1173 struct scsi_qla_host *vha = sess->vha; 1174 unsigned long flags; 1175 1176 ql_dbg(ql_dbg_disc, sess->vha, 0x210a, 1177 "%s sess %p for deletion %8phC\n", 1178 __func__, sess, sess->port_name); 1179 1180 spin_lock_irqsave(&sess->vha->work_lock, flags); 1181 if (sess->free_pending) { 1182 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1183 return; 1184 } 1185 sess->free_pending = 1; 1186 /* 1187 * Use FCF_ASYNC_SENT flag to block other cmds used in sess 1188 * management from being sent. 1189 */ 1190 sess->flags |= FCF_ASYNC_SENT; 1191 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1192 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1193 1194 if (sess->se_sess) 1195 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 1196 1197 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1198 sess->last_rscn_gen = sess->rscn_gen; 1199 sess->last_login_gen = sess->login_gen; 1200 1201 queue_work(sess->vha->hw->wq, &sess->free_work); 1202} 1203EXPORT_SYMBOL(qlt_unreg_sess); 1204 1205static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 1206{ 1207 struct qla_hw_data *ha = vha->hw; 1208 struct fc_port *sess = NULL; 1209 uint16_t loop_id; 1210 int res = 0; 1211 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 1212 unsigned long flags; 1213 1214 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 1215 if (loop_id == 0xFFFF) { 1216 /* Global event */ 1217 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 1218 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1219 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 1220 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1221 } else { 1222 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1223 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 1224 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1225 } 1226 1227 ql_dbg(ql_dbg_tgt, vha, 0xe000, 1228 "Using sess for qla_tgt_reset: %p\n", sess); 1229 if (!sess) { 1230 res = -ESRCH; 1231 return res; 1232 } 1233 1234 ql_dbg(ql_dbg_tgt, vha, 0xe047, 1235 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 1236 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 1237 mcmd, loop_id); 1238 1239 return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); 1240} 1241 1242static void qla24xx_chk_fcp_state(struct fc_port *sess) 1243{ 1244 if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { 1245 sess->logout_on_delete = 0; 1246 sess->logo_ack_needed = 0; 1247 sess->fw_login_state = DSC_LS_PORT_UNAVAIL; 1248 } 1249} 1250 1251void qlt_schedule_sess_for_deletion(struct fc_port *sess) 1252{ 1253 struct qla_tgt *tgt = sess->tgt; 1254 unsigned long flags; 1255 u16 sec; 1256 1257 switch (sess->disc_state) { 1258 case DSC_DELETE_PEND: 1259 return; 1260 case DSC_DELETED: 1261 if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && 1262 !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { 1263 if (tgt && tgt->tgt_stop && tgt->sess_count == 0) 1264 wake_up_all(&tgt->waitQ); 1265 1266 if (sess->vha->fcport_count == 0) 1267 wake_up_all(&sess->vha->fcport_waitQ); 1268 return; 1269 } 1270 break; 1271 case DSC_UPD_FCPORT: 1272 /* 1273 * This port is not done reporting to upper layer. 1274 * let it finish 1275 */ 1276 sess->next_disc_state = DSC_DELETE_PEND; 1277 sec = jiffies_to_msecs(jiffies - 1278 sess->jiffies_at_registration)/1000; 1279 if (sess->sec_since_registration < sec && sec && !(sec % 5)) { 1280 sess->sec_since_registration = sec; 1281 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 1282 "%s %8phC : Slow Rport registration(%d Sec)\n", 1283 __func__, sess->port_name, sec); 1284 } 1285 return; 1286 default: 1287 break; 1288 } 1289 1290 spin_lock_irqsave(&sess->vha->work_lock, flags); 1291 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1292 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1293 return; 1294 } 1295 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 1296 spin_unlock_irqrestore(&sess->vha->work_lock, flags); 1297 1298 sess->prli_pend_timer = 0; 1299 qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); 1300 1301 qla24xx_chk_fcp_state(sess); 1302 1303 ql_dbg(ql_log_warn, sess->vha, 0xe001, 1304 "Scheduling sess %p for deletion %8phC fc4_type %x\n", 1305 sess, sess->port_name, sess->fc4_type); 1306 1307 WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); 1308} 1309 1310static void qlt_clear_tgt_db(struct qla_tgt *tgt) 1311{ 1312 struct fc_port *sess; 1313 scsi_qla_host_t *vha = tgt->vha; 1314 1315 list_for_each_entry(sess, &vha->vp_fcports, list) { 1316 if (sess->se_sess) 1317 qlt_schedule_sess_for_deletion(sess); 1318 } 1319 1320 /* At this point tgt could be already dead */ 1321} 1322 1323static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, 1324 uint16_t *loop_id) 1325{ 1326 struct qla_hw_data *ha = vha->hw; 1327 dma_addr_t gid_list_dma; 1328 struct gid_list_info *gid_list, *gid; 1329 int res, rc, i; 1330 uint16_t entries; 1331 1332 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1333 &gid_list_dma, GFP_KERNEL); 1334 if (!gid_list) { 1335 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 1336 "qla_target(%d): DMA Alloc failed of %u\n", 1337 vha->vp_idx, qla2x00_gid_list_size(ha)); 1338 return -ENOMEM; 1339 } 1340 1341 /* Get list of logged in devices */ 1342 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); 1343 if (rc != QLA_SUCCESS) { 1344 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 1345 "qla_target(%d): get_id_list() failed: %x\n", 1346 vha->vp_idx, rc); 1347 res = -EBUSY; 1348 goto out_free_id_list; 1349 } 1350 1351 gid = gid_list; 1352 res = -ENOENT; 1353 for (i = 0; i < entries; i++) { 1354 if (gid->al_pa == s_id.al_pa && 1355 gid->area == s_id.area && 1356 gid->domain == s_id.domain) { 1357 *loop_id = le16_to_cpu(gid->loop_id); 1358 res = 0; 1359 break; 1360 } 1361 gid = (void *)gid + ha->gid_list_info_size; 1362 } 1363 1364out_free_id_list: 1365 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 1366 gid_list, gid_list_dma); 1367 return res; 1368} 1369 1370/* 1371 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 1372 * Caller must put it. 1373 */ 1374static struct fc_port *qlt_create_sess( 1375 struct scsi_qla_host *vha, 1376 fc_port_t *fcport, 1377 bool local) 1378{ 1379 struct qla_hw_data *ha = vha->hw; 1380 struct fc_port *sess = fcport; 1381 unsigned long flags; 1382 1383 if (vha->vha_tgt.qla_tgt->tgt_stop) 1384 return NULL; 1385 1386 if (fcport->se_sess) { 1387 if (!kref_get_unless_zero(&sess->sess_kref)) { 1388 ql_dbg(ql_dbg_disc, vha, 0x20f6, 1389 "%s: kref_get_unless_zero failed for %8phC\n", 1390 __func__, sess->port_name); 1391 return NULL; 1392 } 1393 return fcport; 1394 } 1395 sess->tgt = vha->vha_tgt.qla_tgt; 1396 sess->local = local; 1397 1398 /* 1399 * Under normal circumstances we want to logout from firmware when 1400 * session eventually ends and release corresponding nport handle. 1401 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 1402 * code will adjust these flags as necessary. 1403 */ 1404 sess->logout_on_delete = 1; 1405 sess->keep_nport_handle = 0; 1406 sess->logout_completed = 0; 1407 1408 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 1409 &fcport->port_name[0], sess) < 0) { 1410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, 1411 "(%d) %8phC check_initiator_node_acl failed\n", 1412 vha->vp_idx, fcport->port_name); 1413 return NULL; 1414 } else { 1415 kref_init(&fcport->sess_kref); 1416 /* 1417 * Take an extra reference to ->sess_kref here to handle 1418 * fc_port access across ->tgt.sess_lock reaquire. 1419 */ 1420 if (!kref_get_unless_zero(&sess->sess_kref)) { 1421 ql_dbg(ql_dbg_disc, vha, 0x20f7, 1422 "%s: kref_get_unless_zero failed for %8phC\n", 1423 __func__, sess->port_name); 1424 return NULL; 1425 } 1426 1427 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1428 if (!IS_SW_RESV_ADDR(sess->d_id)) 1429 vha->vha_tgt.qla_tgt->sess_count++; 1430 1431 qlt_do_generation_tick(vha, &sess->generation); 1432 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1433 } 1434 1435 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 1436 "Adding sess %p se_sess %p to tgt %p sess_count %d\n", 1437 sess, sess->se_sess, vha->vha_tgt.qla_tgt, 1438 vha->vha_tgt.qla_tgt->sess_count); 1439 1440 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 1441 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 1442 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 1443 vha->vp_idx, local ? "local " : "", fcport->port_name, 1444 fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, 1445 sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 1446 1447 return sess; 1448} 1449 1450static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1451{ 1452 struct qla_hw_data *ha = tgt->ha; 1453 unsigned long flags; 1454 int res; 1455 /* 1456 * We need to protect against race, when tgt is freed before or 1457 * inside wake_up() 1458 */ 1459 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1460 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1461 "tgt %p, sess_count=%d\n", 1462 tgt, tgt->sess_count); 1463 res = (tgt->sess_count == 0); 1464 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1465 1466 return res; 1467} 1468 1469/* Called by tcm_qla2xxx configfs code */ 1470int qlt_stop_phase1(struct qla_tgt *tgt) 1471{ 1472 struct scsi_qla_host *vha = tgt->vha; 1473 struct qla_hw_data *ha = tgt->ha; 1474 unsigned long flags; 1475 1476 mutex_lock(&ha->optrom_mutex); 1477 mutex_lock(&qla_tgt_mutex); 1478 1479 if (tgt->tgt_stop || tgt->tgt_stopped) { 1480 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1481 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1482 mutex_unlock(&qla_tgt_mutex); 1483 mutex_unlock(&ha->optrom_mutex); 1484 return -EPERM; 1485 } 1486 1487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1488 vha->host_no, vha); 1489 /* 1490 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1491 * Lock is needed, because we still can get an incoming packet. 1492 */ 1493 mutex_lock(&vha->vha_tgt.tgt_mutex); 1494 tgt->tgt_stop = 1; 1495 qlt_clear_tgt_db(tgt); 1496 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1497 mutex_unlock(&qla_tgt_mutex); 1498 1499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1500 "Waiting for sess works (tgt %p)", tgt); 1501 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1502 do { 1503 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1504 flush_work(&tgt->sess_work); 1505 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1506 } while (!list_empty(&tgt->sess_works_list)); 1507 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1508 1509 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1510 "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); 1511 1512 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1513 1514 /* Big hammer */ 1515 if (!ha->flags.host_shutting_down && 1516 (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))) 1517 qlt_disable_vha(vha); 1518 1519 /* Wait for sessions to clear out (just in case) */ 1520 wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); 1521 mutex_unlock(&ha->optrom_mutex); 1522 1523 return 0; 1524} 1525EXPORT_SYMBOL(qlt_stop_phase1); 1526 1527/* Called by tcm_qla2xxx configfs code */ 1528void qlt_stop_phase2(struct qla_tgt *tgt) 1529{ 1530 scsi_qla_host_t *vha = tgt->vha; 1531 1532 if (tgt->tgt_stopped) { 1533 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1534 "Already in tgt->tgt_stopped state\n"); 1535 dump_stack(); 1536 return; 1537 } 1538 if (!tgt->tgt_stop) { 1539 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1540 "%s: phase1 stop is not completed\n", __func__); 1541 dump_stack(); 1542 return; 1543 } 1544 1545 mutex_lock(&tgt->ha->optrom_mutex); 1546 mutex_lock(&vha->vha_tgt.tgt_mutex); 1547 tgt->tgt_stop = 0; 1548 tgt->tgt_stopped = 1; 1549 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1550 mutex_unlock(&tgt->ha->optrom_mutex); 1551 1552 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", 1553 tgt); 1554 1555 switch (vha->qlini_mode) { 1556 case QLA2XXX_INI_MODE_EXCLUSIVE: 1557 vha->flags.online = 1; 1558 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 1559 break; 1560 default: 1561 break; 1562 } 1563} 1564EXPORT_SYMBOL(qlt_stop_phase2); 1565 1566/* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1567static void qlt_release(struct qla_tgt *tgt) 1568{ 1569 scsi_qla_host_t *vha = tgt->vha; 1570 void *node; 1571 u64 key = 0; 1572 u16 i; 1573 struct qla_qpair_hint *h; 1574 struct qla_hw_data *ha = vha->hw; 1575 1576 if (!tgt->tgt_stop && !tgt->tgt_stopped) 1577 qlt_stop_phase1(tgt); 1578 1579 if (!tgt->tgt_stopped) 1580 qlt_stop_phase2(tgt); 1581 1582 for (i = 0; i < vha->hw->max_qpairs + 1; i++) { 1583 unsigned long flags; 1584 1585 h = &tgt->qphints[i]; 1586 if (h->qpair) { 1587 spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); 1588 list_del(&h->hint_elem); 1589 spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); 1590 h->qpair = NULL; 1591 } 1592 } 1593 kfree(tgt->qphints); 1594 mutex_lock(&qla_tgt_mutex); 1595 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 1596 mutex_unlock(&qla_tgt_mutex); 1597 1598 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 1599 btree_remove64(&tgt->lun_qpair_map, key); 1600 1601 btree_destroy64(&tgt->lun_qpair_map); 1602 1603 if (vha->vp_idx) 1604 if (ha->tgt.tgt_ops && 1605 ha->tgt.tgt_ops->remove_target && 1606 vha->vha_tgt.target_lport_ptr) 1607 ha->tgt.tgt_ops->remove_target(vha); 1608 1609 vha->vha_tgt.qla_tgt = NULL; 1610 1611 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1612 "Release of tgt %p finished\n", tgt); 1613 1614 kfree(tgt); 1615} 1616 1617/* ha->hardware_lock supposed to be held on entry */ 1618static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1619 const void *param, unsigned int param_size) 1620{ 1621 struct qla_tgt_sess_work_param *prm; 1622 unsigned long flags; 1623 1624 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1625 if (!prm) { 1626 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1627 "qla_target(%d): Unable to create session " 1628 "work, command will be refused", 0); 1629 return -ENOMEM; 1630 } 1631 1632 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1633 "Scheduling work (type %d, prm %p)" 1634 " to find session for param %p (size %d, tgt %p)\n", 1635 type, prm, param, param_size, tgt); 1636 1637 prm->type = type; 1638 memcpy(&prm->tm_iocb, param, param_size); 1639 1640 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1641 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1642 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1643 1644 schedule_work(&tgt->sess_work); 1645 1646 return 0; 1647} 1648 1649/* 1650 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1651 */ 1652static void qlt_send_notify_ack(struct qla_qpair *qpair, 1653 struct imm_ntfy_from_isp *ntfy, 1654 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1655 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1656{ 1657 struct scsi_qla_host *vha = qpair->vha; 1658 struct qla_hw_data *ha = vha->hw; 1659 request_t *pkt; 1660 struct nack_to_isp *nack; 1661 1662 if (!ha->flags.fw_started) 1663 return; 1664 1665 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1666 1667 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 1668 if (!pkt) { 1669 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1670 "qla_target(%d): %s failed: unable to allocate " 1671 "request packet\n", vha->vp_idx, __func__); 1672 return; 1673 } 1674 1675 if (vha->vha_tgt.qla_tgt != NULL) 1676 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1677 1678 pkt->entry_type = NOTIFY_ACK_TYPE; 1679 pkt->entry_count = 1; 1680 1681 nack = (struct nack_to_isp *)pkt; 1682 nack->ox_id = ntfy->ox_id; 1683 1684 nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; 1685 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1686 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1687 nack->u.isp24.flags = ntfy->u.isp24.flags & 1688 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 1689 } 1690 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1691 nack->u.isp24.status = ntfy->u.isp24.status; 1692 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1693 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1694 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1695 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1696 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1697 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1698 nack->u.isp24.srr_reject_code = srr_reject_code; 1699 nack->u.isp24.srr_reject_code_expl = srr_explan; 1700 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1701 1702 /* TODO qualify this with EDIF enable */ 1703 if (ntfy->u.isp24.status_subcode == ELS_PLOGI && 1704 (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 1705 nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); 1706 } 1707 1708 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1709 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1710 vha->vp_idx, nack->u.isp24.status); 1711 1712 /* Memory Barrier */ 1713 wmb(); 1714 qla2x00_start_iocbs(vha, qpair->req); 1715} 1716 1717static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) 1718{ 1719 struct scsi_qla_host *vha = mcmd->vha; 1720 struct qla_hw_data *ha = vha->hw; 1721 struct abts_resp_to_24xx *resp; 1722 __le32 f_ctl; 1723 uint32_t h; 1724 uint8_t *p; 1725 int rc; 1726 struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; 1727 struct qla_qpair *qpair = mcmd->qpair; 1728 1729 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1730 "Sending task mgmt ABTS response (ha=%p, status=%x)\n", 1731 ha, mcmd->fc_tm_rsp); 1732 1733 rc = qlt_check_reserve_free_req(qpair, 1); 1734 if (rc) { 1735 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1736 "qla_target(%d): %s failed: unable to allocate request packet\n", 1737 vha->vp_idx, __func__); 1738 return -EAGAIN; 1739 } 1740 1741 resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; 1742 memset(resp, 0, sizeof(*resp)); 1743 1744 h = qlt_make_handle(qpair); 1745 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1746 /* 1747 * CTIO type 7 from the firmware doesn't provide a way to 1748 * know the initiator's LOOP ID, hence we can't find 1749 * the session and, so, the command. 1750 */ 1751 return -EAGAIN; 1752 } else { 1753 qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; 1754 } 1755 1756 resp->handle = make_handle(qpair->req->id, h); 1757 resp->entry_type = ABTS_RESP_24XX; 1758 resp->entry_count = 1; 1759 resp->nport_handle = abts->nport_handle; 1760 resp->vp_index = vha->vp_idx; 1761 resp->sof_type = abts->sof_type; 1762 resp->exchange_address = abts->exchange_address; 1763 resp->fcp_hdr_le = abts->fcp_hdr_le; 1764 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1765 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1766 F_CTL_SEQ_INITIATIVE); 1767 p = (uint8_t *)&f_ctl; 1768 resp->fcp_hdr_le.f_ctl[0] = *p++; 1769 resp->fcp_hdr_le.f_ctl[1] = *p++; 1770 resp->fcp_hdr_le.f_ctl[2] = *p; 1771 1772 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1773 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1774 1775 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1776 if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { 1777 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1778 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1779 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1780 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1781 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1782 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1783 } else { 1784 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1785 resp->payload.ba_rjt.reason_code = 1786 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1787 /* Other bytes are zero */ 1788 } 1789 1790 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1791 1792 /* Memory Barrier */ 1793 wmb(); 1794 if (qpair->reqq_start_iocbs) 1795 qpair->reqq_start_iocbs(qpair); 1796 else 1797 qla2x00_start_iocbs(vha, qpair->req); 1798 1799 return rc; 1800} 1801 1802/* 1803 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1804 */ 1805static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, 1806 struct abts_recv_from_24xx *abts, uint32_t status, 1807 bool ids_reversed) 1808{ 1809 struct scsi_qla_host *vha = qpair->vha; 1810 struct qla_hw_data *ha = vha->hw; 1811 struct abts_resp_to_24xx *resp; 1812 __le32 f_ctl; 1813 uint8_t *p; 1814 1815 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1816 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1817 ha, abts, status); 1818 1819 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, 1820 NULL); 1821 if (!resp) { 1822 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1823 "qla_target(%d): %s failed: unable to allocate " 1824 "request packet", vha->vp_idx, __func__); 1825 return; 1826 } 1827 1828 resp->entry_type = ABTS_RESP_24XX; 1829 resp->handle = QLA_TGT_SKIP_HANDLE; 1830 resp->entry_count = 1; 1831 resp->nport_handle = abts->nport_handle; 1832 resp->vp_index = vha->vp_idx; 1833 resp->sof_type = abts->sof_type; 1834 resp->exchange_address = abts->exchange_address; 1835 resp->fcp_hdr_le = abts->fcp_hdr_le; 1836 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1837 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1838 F_CTL_SEQ_INITIATIVE); 1839 p = (uint8_t *)&f_ctl; 1840 resp->fcp_hdr_le.f_ctl[0] = *p++; 1841 resp->fcp_hdr_le.f_ctl[1] = *p++; 1842 resp->fcp_hdr_le.f_ctl[2] = *p; 1843 if (ids_reversed) { 1844 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; 1845 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; 1846 } else { 1847 resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; 1848 resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; 1849 } 1850 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1851 if (status == FCP_TMF_CMPL) { 1852 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1853 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1854 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1855 resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); 1856 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1857 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1858 } else { 1859 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1860 resp->payload.ba_rjt.reason_code = 1861 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1862 /* Other bytes are zero */ 1863 } 1864 1865 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1866 1867 /* Memory Barrier */ 1868 wmb(); 1869 if (qpair->reqq_start_iocbs) 1870 qpair->reqq_start_iocbs(qpair); 1871 else 1872 qla2x00_start_iocbs(vha, qpair->req); 1873} 1874 1875/* 1876 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1877 */ 1878static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1879 struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) 1880{ 1881 struct ctio7_to_24xx *ctio; 1882 u16 tmp; 1883 struct abts_recv_from_24xx *entry; 1884 1885 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); 1886 if (ctio == NULL) { 1887 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1888 "qla_target(%d): %s failed: unable to allocate " 1889 "request packet\n", vha->vp_idx, __func__); 1890 return; 1891 } 1892 1893 if (mcmd) 1894 /* abts from remote port */ 1895 entry = &mcmd->orig_iocb.abts; 1896 else 1897 /* abts from this driver. */ 1898 entry = (struct abts_recv_from_24xx *)pkt; 1899 1900 /* 1901 * We've got on entrance firmware's response on by us generated 1902 * ABTS response. So, in it ID fields are reversed. 1903 */ 1904 1905 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe082, 1906 "qla_target(%d): tag %u: Sending TERM EXCH CTIO for ABTS\n", 1907 vha->vp_idx, le32_to_cpu(entry->exchange_addr_to_abort)); 1908 1909 ctio->entry_type = CTIO_TYPE7; 1910 ctio->entry_count = 1; 1911 ctio->nport_handle = entry->nport_handle; 1912 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1913 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1914 ctio->vp_index = vha->vp_idx; 1915 ctio->exchange_addr = entry->exchange_addr_to_abort; 1916 tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); 1917 1918 if (mcmd) { 1919 ctio->initiator_id = entry->fcp_hdr_le.s_id; 1920 1921 if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) 1922 tmp |= (mcmd->abort_io_attr << 9); 1923 else if (qpair->retry_term_cnt & 1) 1924 tmp |= (0x4 << 9); 1925 } else { 1926 ctio->initiator_id = entry->fcp_hdr_le.d_id; 1927 1928 if (qpair->retry_term_cnt & 1) 1929 tmp |= (0x4 << 9); 1930 } 1931 ctio->u.status1.flags = cpu_to_le16(tmp); 1932 ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; 1933 1934 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1935 "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", 1936 le16_to_cpu(ctio->u.status1.flags), 1937 le16_to_cpu(ctio->u.status1.ox_id), 1938 (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); 1939 1940 /* Memory Barrier */ 1941 wmb(); 1942 if (qpair->reqq_start_iocbs) 1943 qpair->reqq_start_iocbs(qpair); 1944 else 1945 qla2x00_start_iocbs(vha, qpair->req); 1946 1947 if (mcmd) 1948 qlt_build_abts_resp_iocb(mcmd); 1949 else 1950 qlt_24xx_send_abts_resp(qpair, 1951 (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); 1952 1953} 1954 1955/* drop cmds for the given lun 1956 * XXX only looks for cmds on the port through which lun reset was recieved 1957 * XXX does not go through the list of other port (which may have cmds 1958 * for the same lun) 1959 */ 1960static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) 1961{ 1962 struct qla_tgt_sess_op *op; 1963 struct qla_tgt_cmd *cmd; 1964 uint32_t key; 1965 unsigned long flags; 1966 1967 key = sid_to_key(s_id); 1968 spin_lock_irqsave(&vha->cmd_list_lock, flags); 1969 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 1970 uint32_t op_key; 1971 u64 op_lun; 1972 1973 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1974 op_lun = scsilun_to_int( 1975 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1976 if (op_key == key && op_lun == lun) 1977 op->aborted = true; 1978 } 1979 1980 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1981 uint32_t cmd_key; 1982 u64 cmd_lun; 1983 1984 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1985 cmd_lun = scsilun_to_int( 1986 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1987 if (cmd_key == key && cmd_lun == lun) { 1988 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe085, 1989 "qla_target(%d): tag %lld: aborted by TMR\n", 1990 vha->vp_idx, cmd->se_cmd.tag); 1991 cmd->aborted = 1; 1992 } 1993 } 1994 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 1995} 1996 1997static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, 1998 uint64_t unpacked_lun) 1999{ 2000 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 2001 struct qla_qpair_hint *h = NULL; 2002 2003 if (vha->flags.qpairs_available) { 2004 h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); 2005 if (!h) 2006 h = &tgt->qphints[0]; 2007 } else { 2008 h = &tgt->qphints[0]; 2009 } 2010 2011 return h; 2012} 2013 2014static void qlt_do_tmr_work(struct work_struct *work) 2015{ 2016 struct qla_tgt_mgmt_cmd *mcmd = 2017 container_of(work, struct qla_tgt_mgmt_cmd, work); 2018 struct qla_hw_data *ha = mcmd->vha->hw; 2019 int rc; 2020 uint32_t tag; 2021 2022 switch (mcmd->tmr_func) { 2023 case QLA_TGT_ABTS: 2024 tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); 2025 break; 2026 default: 2027 tag = 0; 2028 break; 2029 } 2030 2031 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, 2032 mcmd->tmr_func, tag); 2033 2034 if (rc != 0) { 2035 ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, 2036 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 2037 mcmd->vha->vp_idx, rc); 2038 mcmd->flags |= QLA24XX_MGMT_LLD_OWNED; 2039 mcmd->fc_tm_rsp = FCP_TMF_FAILED; 2040 qlt_xmit_tm_rsp(mcmd); 2041 } 2042} 2043 2044/* ha->hardware_lock supposed to be held on entry */ 2045static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2046 struct abts_recv_from_24xx *abts, struct fc_port *sess) 2047{ 2048 struct qla_hw_data *ha = vha->hw; 2049 struct qla_tgt_mgmt_cmd *mcmd; 2050 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 2051 struct qla_tgt_cmd *abort_cmd; 2052 2053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 2054 "qla_target(%d): task abort (tag=%d)\n", 2055 vha->vp_idx, abts->exchange_addr_to_abort); 2056 2057 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 2058 if (mcmd == NULL) { 2059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 2060 "qla_target(%d): %s: Allocation of ABORT cmd failed", 2061 vha->vp_idx, __func__); 2062 return -ENOMEM; 2063 } 2064 memset(mcmd, 0, sizeof(*mcmd)); 2065 mcmd->cmd_type = TYPE_TGT_TMCMD; 2066 mcmd->sess = sess; 2067 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 2068 mcmd->reset_count = ha->base_qpair->chip_reset; 2069 mcmd->tmr_func = QLA_TGT_ABTS; 2070 mcmd->qpair = h->qpair; 2071 mcmd->vha = vha; 2072 2073 /* 2074 * LUN is looked up by target-core internally based on the passed 2075 * abts->exchange_addr_to_abort tag. 2076 */ 2077 mcmd->se_cmd.cpuid = h->cpuid; 2078 2079 abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, 2080 le32_to_cpu(abts->exchange_addr_to_abort)); 2081 if (!abort_cmd) { 2082 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2083 return -EIO; 2084 } 2085 mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; 2086 2087 if (abort_cmd->qpair) { 2088 mcmd->qpair = abort_cmd->qpair; 2089 mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; 2090 mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; 2091 mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; 2092 } 2093 2094 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 2095 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); 2096 2097 return 0; 2098} 2099 2100/* 2101 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2102 */ 2103static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 2104 struct abts_recv_from_24xx *abts) 2105{ 2106 struct qla_hw_data *ha = vha->hw; 2107 struct fc_port *sess; 2108 uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); 2109 be_id_t s_id; 2110 int rc; 2111 unsigned long flags; 2112 2113 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 2114 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 2115 "qla_target(%d): ABTS: Abort Sequence not " 2116 "supported\n", vha->vp_idx); 2117 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2118 false); 2119 return; 2120 } 2121 2122 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 2123 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 2124 "qla_target(%d): ABTS: Unknown Exchange " 2125 "Address received\n", vha->vp_idx); 2126 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2127 false); 2128 return; 2129 } 2130 2131 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 2132 "qla_target(%d): task abort (s_id=%x:%x:%x, " 2133 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, 2134 abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, 2135 le32_to_cpu(abts->fcp_hdr_le.parameter)); 2136 2137 s_id = le_id_to_be(abts->fcp_hdr_le.s_id); 2138 2139 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 2140 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 2141 if (!sess) { 2142 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 2143 "qla_target(%d): task abort for non-existent session\n", 2144 vha->vp_idx); 2145 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2146 2147 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2148 false); 2149 return; 2150 } 2151 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 2152 2153 2154 if (sess->deleted) { 2155 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2156 false); 2157 return; 2158 } 2159 2160 rc = __qlt_24xx_handle_abts(vha, abts, sess); 2161 if (rc != 0) { 2162 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 2163 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 2164 vha->vp_idx, rc); 2165 qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, 2166 false); 2167 return; 2168 } 2169} 2170 2171/* 2172 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2173 */ 2174static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, 2175 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 2176{ 2177 struct scsi_qla_host *ha = mcmd->vha; 2178 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 2179 struct ctio7_to_24xx *ctio; 2180 uint16_t temp; 2181 2182 ql_dbg(ql_dbg_tgt, ha, 0xe008, 2183 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 2184 ha, atio, resp_code); 2185 2186 2187 ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); 2188 if (ctio == NULL) { 2189 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 2190 "qla_target(%d): %s failed: unable to allocate " 2191 "request packet\n", ha->vp_idx, __func__); 2192 return; 2193 } 2194 2195 ctio->entry_type = CTIO_TYPE7; 2196 ctio->entry_count = 1; 2197 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2198 ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); 2199 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2200 ctio->vp_index = ha->vp_idx; 2201 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2202 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2203 temp = (atio->u.isp24.attr << 9)| 2204 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2205 ctio->u.status1.flags = cpu_to_le16(temp); 2206 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2207 ctio->u.status1.ox_id = cpu_to_le16(temp); 2208 ctio->u.status1.scsi_status = 2209 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 2210 ctio->u.status1.response_len = cpu_to_le16(8); 2211 ctio->u.status1.sense_data[0] = resp_code; 2212 2213 /* Memory Barrier */ 2214 wmb(); 2215 if (qpair->reqq_start_iocbs) 2216 qpair->reqq_start_iocbs(qpair); 2217 else 2218 qla2x00_start_iocbs(ha, qpair->req); 2219} 2220 2221void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 2222{ 2223 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 2224} 2225EXPORT_SYMBOL(qlt_free_mcmd); 2226 2227/* 2228 * If the upper layer knows about this mgmt cmd, then call its ->free_cmd() 2229 * callback, which will eventually call qlt_free_mcmd(). Otherwise, call 2230 * qlt_free_mcmd() directly. 2231 */ 2232void qlt_free_ul_mcmd(struct qla_hw_data *ha, struct qla_tgt_mgmt_cmd *mcmd) 2233{ 2234 if (!mcmd) 2235 return; 2236 if (mcmd->flags & QLA24XX_MGMT_LLD_OWNED) 2237 qlt_free_mcmd(mcmd); 2238 else 2239 ha->tgt.tgt_ops->free_mcmd(mcmd); 2240} 2241 2242/* 2243 * ha->hardware_lock supposed to be held on entry. Might drop it, then 2244 * reacquire 2245 */ 2246void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 2247 uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) 2248{ 2249 struct atio_from_isp *atio = &cmd->atio; 2250 struct ctio7_to_24xx *ctio; 2251 uint16_t temp; 2252 struct scsi_qla_host *vha = cmd->vha; 2253 2254 ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, 2255 "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " 2256 "sense_key=%02x, asc=%02x, ascq=%02x", 2257 vha, atio, scsi_status, sense_key, asc, ascq); 2258 2259 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); 2260 if (!ctio) { 2261 ql_dbg(ql_dbg_async, vha, 0x3067, 2262 "qla2x00t(%ld): %s failed: unable to allocate request packet", 2263 vha->host_no, __func__); 2264 goto out; 2265 } 2266 2267 ctio->entry_type = CTIO_TYPE7; 2268 ctio->entry_count = 1; 2269 ctio->handle = QLA_TGT_SKIP_HANDLE; 2270 ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); 2271 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2272 ctio->vp_index = vha->vp_idx; 2273 ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2274 ctio->exchange_addr = atio->u.isp24.exchange_addr; 2275 temp = (atio->u.isp24.attr << 9) | 2276 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; 2277 ctio->u.status1.flags = cpu_to_le16(temp); 2278 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2279 ctio->u.status1.ox_id = cpu_to_le16(temp); 2280 ctio->u.status1.scsi_status = 2281 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); 2282 ctio->u.status1.response_len = cpu_to_le16(18); 2283 ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 2284 2285 if (ctio->u.status1.residual != 0) 2286 ctio->u.status1.scsi_status |= 2287 cpu_to_le16(SS_RESIDUAL_UNDER); 2288 2289 /* Fixed format sense data. */ 2290 ctio->u.status1.sense_data[0] = 0x70; 2291 ctio->u.status1.sense_data[2] = sense_key; 2292 /* Additional sense length */ 2293 ctio->u.status1.sense_data[7] = 0xa; 2294 /* ASC and ASCQ */ 2295 ctio->u.status1.sense_data[12] = asc; 2296 ctio->u.status1.sense_data[13] = ascq; 2297 2298 /* Memory Barrier */ 2299 wmb(); 2300 2301 if (qpair->reqq_start_iocbs) 2302 qpair->reqq_start_iocbs(qpair); 2303 else 2304 qla2x00_start_iocbs(vha, qpair->req); 2305 2306out: 2307 return; 2308} 2309 2310/* callback from target fabric module code */ 2311void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 2312{ 2313 struct scsi_qla_host *vha = mcmd->sess->vha; 2314 struct qla_hw_data *ha = vha->hw; 2315 unsigned long flags; 2316 struct qla_qpair *qpair = mcmd->qpair; 2317 bool free_mcmd = true; 2318 2319 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 2320 "TM response mcmd (%p) status %#x state %#x", 2321 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 2322 2323 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 2324 2325 if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { 2326 /* 2327 * Either the port is not online or this request was from 2328 * previous life, just abort the processing. 2329 */ 2330 ql_dbg(ql_dbg_async, vha, 0xe100, 2331 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2332 vha->flags.online, qla2x00_reset_active(vha), 2333 mcmd->reset_count, qpair->chip_reset); 2334 qlt_free_ul_mcmd(ha, mcmd); 2335 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2336 return; 2337 } 2338 2339 if (mcmd->flags & QLA24XX_MGMT_SEND_NACK) { 2340 switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { 2341 case ELS_LOGO: 2342 case ELS_PRLO: 2343 case ELS_TPRLO: 2344 ql_dbg(ql_dbg_disc, vha, 0x2106, 2345 "TM response logo %8phC status %#x state %#x", 2346 mcmd->sess->port_name, mcmd->fc_tm_rsp, 2347 mcmd->flags); 2348 qlt_schedule_sess_for_deletion(mcmd->sess); 2349 break; 2350 default: 2351 qlt_send_notify_ack(vha->hw->base_qpair, 2352 &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); 2353 break; 2354 } 2355 } else { 2356 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { 2357 qlt_build_abts_resp_iocb(mcmd); 2358 free_mcmd = false; 2359 } else 2360 qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, 2361 mcmd->fc_tm_rsp); 2362 } 2363 /* 2364 * Make the callback for ->free_mcmd() to queue_work() and invoke 2365 * target_put_sess_cmd() to drop cmd_kref to 1. The final 2366 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 2367 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 2368 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 2369 * qlt_xmit_tm_rsp() returns here.. 2370 */ 2371 if (free_mcmd) 2372 qlt_free_ul_mcmd(ha, mcmd); 2373 2374 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 2375} 2376EXPORT_SYMBOL(qlt_xmit_tm_rsp); 2377 2378/* No locks */ 2379static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 2380{ 2381 struct qla_tgt_cmd *cmd = prm->cmd; 2382 2383 BUG_ON(cmd->sg_cnt == 0); 2384 2385 prm->sg = (struct scatterlist *)cmd->sg; 2386 prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, 2387 cmd->sg_cnt, cmd->dma_data_direction); 2388 if (unlikely(prm->seg_cnt == 0)) 2389 goto out_err; 2390 2391 prm->cmd->sg_mapped = 1; 2392 2393 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 2394 /* 2395 * If greater than four sg entries then we need to allocate 2396 * the continuation entries 2397 */ 2398 if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) 2399 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 2400 QLA_TGT_DATASEGS_PER_CMD_24XX, 2401 QLA_TGT_DATASEGS_PER_CONT_24XX); 2402 } else { 2403 /* DIF */ 2404 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2405 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2406 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 2407 prm->tot_dsds = prm->seg_cnt; 2408 } else 2409 prm->tot_dsds = prm->seg_cnt; 2410 2411 if (cmd->prot_sg_cnt) { 2412 prm->prot_sg = cmd->prot_sg; 2413 prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, 2414 cmd->prot_sg, cmd->prot_sg_cnt, 2415 cmd->dma_data_direction); 2416 if (unlikely(prm->prot_seg_cnt == 0)) 2417 goto out_err; 2418 2419 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 2420 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 2421 /* Dif Bundling not support here */ 2422 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 2423 cmd->blk_sz); 2424 prm->tot_dsds += prm->prot_seg_cnt; 2425 } else 2426 prm->tot_dsds += prm->prot_seg_cnt; 2427 } 2428 } 2429 2430 return 0; 2431 2432out_err: 2433 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, 2434 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 2435 0, prm->cmd->sg_cnt); 2436 return -1; 2437} 2438 2439void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 2440{ 2441 struct qla_hw_data *ha; 2442 struct qla_qpair *qpair; 2443 2444 if (!cmd->sg_mapped) 2445 return; 2446 2447 qpair = cmd->qpair; 2448 2449 dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, 2450 cmd->dma_data_direction); 2451 cmd->sg_mapped = 0; 2452 2453 if (cmd->prot_sg_cnt) 2454 dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, 2455 cmd->dma_data_direction); 2456 2457 if (!cmd->ctx) 2458 return; 2459 ha = vha->hw; 2460 if (cmd->ctx_dsd_alloced) 2461 qla2x00_clean_dsd_pool(ha, cmd->ctx); 2462 2463 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 2464} 2465 2466static int qlt_check_reserve_free_req(struct qla_qpair *qpair, 2467 uint32_t req_cnt) 2468{ 2469 uint32_t cnt; 2470 struct req_que *req = qpair->req; 2471 2472 if (req->cnt < (req_cnt + 2)) { 2473 cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : 2474 rd_reg_dword_relaxed(req->req_q_out)); 2475 2476 if (req->ring_index < cnt) 2477 req->cnt = cnt - req->ring_index; 2478 else 2479 req->cnt = req->length - (req->ring_index - cnt); 2480 2481 if (unlikely(req->cnt < (req_cnt + 2))) 2482 return -EAGAIN; 2483 } 2484 2485 req->cnt -= req_cnt; 2486 2487 return 0; 2488} 2489 2490/* 2491 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 2492 */ 2493static inline void *qlt_get_req_pkt(struct req_que *req) 2494{ 2495 /* Adjust ring index. */ 2496 req->ring_index++; 2497 if (req->ring_index == req->length) { 2498 req->ring_index = 0; 2499 req->ring_ptr = req->ring; 2500 } else { 2501 req->ring_ptr++; 2502 } 2503 return (cont_entry_t *)req->ring_ptr; 2504} 2505 2506/* ha->hardware_lock supposed to be held on entry */ 2507static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) 2508{ 2509 uint32_t h; 2510 int index; 2511 uint8_t found = 0; 2512 struct req_que *req = qpair->req; 2513 2514 h = req->current_outstanding_cmd; 2515 2516 for (index = 1; index < req->num_outstanding_cmds; index++) { 2517 h++; 2518 if (h == req->num_outstanding_cmds) 2519 h = 1; 2520 2521 if (h == QLA_TGT_SKIP_HANDLE) 2522 continue; 2523 2524 if (!req->outstanding_cmds[h]) { 2525 found = 1; 2526 break; 2527 } 2528 } 2529 2530 if (found) { 2531 req->current_outstanding_cmd = h; 2532 } else { 2533 ql_dbg(ql_dbg_io, qpair->vha, 0x305b, 2534 "qla_target(%d): Ran out of empty cmd slots\n", 2535 qpair->vha->vp_idx); 2536 h = QLA_TGT_NULL_HANDLE; 2537 } 2538 2539 return h; 2540} 2541 2542/* ha->hardware_lock supposed to be held on entry */ 2543static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, 2544 struct qla_tgt_prm *prm) 2545{ 2546 uint32_t h; 2547 struct ctio7_to_24xx *pkt; 2548 struct atio_from_isp *atio = &prm->cmd->atio; 2549 uint16_t temp; 2550 struct qla_tgt_cmd *cmd = prm->cmd; 2551 2552 pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; 2553 prm->pkt = pkt; 2554 memset(pkt, 0, sizeof(*pkt)); 2555 2556 pkt->entry_type = CTIO_TYPE7; 2557 pkt->entry_count = (uint8_t)prm->req_cnt; 2558 pkt->vp_index = prm->cmd->vp_idx; 2559 2560 h = qlt_make_handle(qpair); 2561 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2562 /* 2563 * CTIO type 7 from the firmware doesn't provide a way to 2564 * know the initiator's LOOP ID, hence we can't find 2565 * the session and, so, the command. 2566 */ 2567 return -EAGAIN; 2568 } else 2569 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 2570 2571 pkt->handle = make_handle(qpair->req->id, h); 2572 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 2573 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 2574 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2575 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 2576 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2577 temp = atio->u.isp24.attr << 9; 2578 pkt->u.status0.flags |= cpu_to_le16(temp); 2579 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2580 pkt->u.status0.ox_id = cpu_to_le16(temp); 2581 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 2582 2583 if (cmd->edif) { 2584 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2585 prm->cmd->sess->edif.rx_bytes += cmd->bufflen; 2586 if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2587 prm->cmd->sess->edif.tx_bytes += cmd->bufflen; 2588 2589 pkt->u.status0.edif_flags |= EF_EN_EDIF; 2590 } 2591 2592 return 0; 2593} 2594 2595/* 2596 * ha->hardware_lock supposed to be held on entry. We have already made sure 2597 * that there is sufficient amount of request entries to not drop it. 2598 */ 2599static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) 2600{ 2601 int cnt; 2602 struct dsd64 *cur_dsd; 2603 2604 /* Build continuation packets */ 2605 while (prm->seg_cnt > 0) { 2606 cont_a64_entry_t *cont_pkt64 = 2607 (cont_a64_entry_t *)qlt_get_req_pkt( 2608 prm->cmd->qpair->req); 2609 2610 /* 2611 * Make sure that from cont_pkt64 none of 2612 * 64-bit specific fields used for 32-bit 2613 * addressing. Cast to (cont_entry_t *) for 2614 * that. 2615 */ 2616 2617 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2618 2619 cont_pkt64->entry_count = 1; 2620 cont_pkt64->sys_define = 0; 2621 2622 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2623 cur_dsd = cont_pkt64->dsd; 2624 2625 /* Load continuation entry data segments */ 2626 for (cnt = 0; 2627 cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; 2628 cnt++, prm->seg_cnt--) { 2629 append_dsd64(&cur_dsd, prm->sg); 2630 prm->sg = sg_next(prm->sg); 2631 } 2632 } 2633} 2634 2635/* 2636 * ha->hardware_lock supposed to be held on entry. We have already made sure 2637 * that there is sufficient amount of request entries to not drop it. 2638 */ 2639static void qlt_load_data_segments(struct qla_tgt_prm *prm) 2640{ 2641 int cnt; 2642 struct dsd64 *cur_dsd; 2643 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2644 2645 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2646 2647 /* Setup packet address segment pointer */ 2648 cur_dsd = &pkt24->u.status0.dsd; 2649 2650 /* Set total data segment count */ 2651 if (prm->seg_cnt) 2652 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2653 2654 if (prm->seg_cnt == 0) { 2655 /* No data transfer */ 2656 cur_dsd->address = 0; 2657 cur_dsd->length = 0; 2658 return; 2659 } 2660 2661 /* If scatter gather */ 2662 2663 /* Load command entry data segments */ 2664 for (cnt = 0; 2665 (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; 2666 cnt++, prm->seg_cnt--) { 2667 append_dsd64(&cur_dsd, prm->sg); 2668 prm->sg = sg_next(prm->sg); 2669 } 2670 2671 qlt_load_cont_data_segments(prm); 2672} 2673 2674static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2675{ 2676 return cmd->bufflen > 0; 2677} 2678 2679static void qlt_print_dif_err(struct qla_tgt_prm *prm) 2680{ 2681 struct qla_tgt_cmd *cmd; 2682 struct scsi_qla_host *vha; 2683 2684 /* asc 0x10=dif error */ 2685 if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { 2686 cmd = prm->cmd; 2687 vha = cmd->vha; 2688 /* ASCQ */ 2689 switch (prm->sense_buffer[13]) { 2690 case 1: 2691 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, 2692 "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2693 "se_cmd=%p tag[%x]", 2694 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2695 cmd->atio.u.isp24.exchange_addr); 2696 break; 2697 case 2: 2698 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, 2699 "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2700 "se_cmd=%p tag[%x]", 2701 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2702 cmd->atio.u.isp24.exchange_addr); 2703 break; 2704 case 3: 2705 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, 2706 "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " 2707 "se_cmd=%p tag[%x]", 2708 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2709 cmd->atio.u.isp24.exchange_addr); 2710 break; 2711 default: 2712 ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, 2713 "BE detected Dif ERR: lba[%llx|%lld] len[%x] " 2714 "se_cmd=%p tag[%x]", 2715 cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, 2716 cmd->atio.u.isp24.exchange_addr); 2717 break; 2718 } 2719 ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); 2720 } 2721} 2722 2723/* 2724 * Called without ha->hardware_lock held 2725 */ 2726static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2727 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2728 uint32_t *full_req_cnt) 2729{ 2730 struct se_cmd *se_cmd = &cmd->se_cmd; 2731 struct qla_qpair *qpair = cmd->qpair; 2732 2733 prm->cmd = cmd; 2734 prm->tgt = cmd->tgt; 2735 prm->pkt = NULL; 2736 prm->rq_result = scsi_status; 2737 prm->sense_buffer = &cmd->sense_buffer[0]; 2738 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2739 prm->sg = NULL; 2740 prm->seg_cnt = -1; 2741 prm->req_cnt = 1; 2742 prm->residual = 0; 2743 prm->add_status_pkt = 0; 2744 prm->prot_sg = NULL; 2745 prm->prot_seg_cnt = 0; 2746 prm->tot_dsds = 0; 2747 2748 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2749 if (qlt_pci_map_calc_cnt(prm) != 0) 2750 return -EAGAIN; 2751 } 2752 2753 *full_req_cnt = prm->req_cnt; 2754 2755 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2756 prm->residual = se_cmd->residual_count; 2757 ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, 2758 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2759 prm->residual, se_cmd->tag, 2760 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2761 cmd->bufflen, prm->rq_result); 2762 prm->rq_result |= SS_RESIDUAL_UNDER; 2763 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2764 prm->residual = se_cmd->residual_count; 2765 ql_dbg_qp(ql_dbg_io, qpair, 0x305d, 2766 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2767 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2768 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2769 prm->rq_result |= SS_RESIDUAL_OVER; 2770 } 2771 2772 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2773 /* 2774 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2775 * ignored in *xmit_response() below 2776 */ 2777 if (qlt_has_data(cmd)) { 2778 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2779 (IS_FWI2_CAPABLE(cmd->vha->hw) && 2780 (prm->rq_result != 0))) { 2781 prm->add_status_pkt = 1; 2782 (*full_req_cnt)++; 2783 } 2784 } 2785 } 2786 2787 return 0; 2788} 2789 2790static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, 2791 int sending_sense) 2792{ 2793 if (cmd->qpair->enable_class_2) 2794 return 0; 2795 2796 if (sending_sense) 2797 return cmd->conf_compl_supported; 2798 else 2799 return cmd->qpair->enable_explicit_conf && 2800 cmd->conf_compl_supported; 2801} 2802 2803static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2804 struct qla_tgt_prm *prm) 2805{ 2806 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2807 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2808 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2809 if (qlt_need_explicit_conf(prm->cmd, 0)) { 2810 ctio->u.status0.flags |= cpu_to_le16( 2811 CTIO7_FLAGS_EXPLICIT_CONFORM | 2812 CTIO7_FLAGS_CONFORM_REQ); 2813 } 2814 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2815 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2816 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2817 int i; 2818 2819 if (qlt_need_explicit_conf(prm->cmd, 1)) { 2820 if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { 2821 ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, 2822 "Skipping EXPLICIT_CONFORM and " 2823 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2824 "non GOOD status\n"); 2825 goto skip_explict_conf; 2826 } 2827 ctio->u.status1.flags |= cpu_to_le16( 2828 CTIO7_FLAGS_EXPLICIT_CONFORM | 2829 CTIO7_FLAGS_CONFORM_REQ); 2830 } 2831skip_explict_conf: 2832 ctio->u.status1.flags &= 2833 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2834 ctio->u.status1.flags |= 2835 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2836 ctio->u.status1.scsi_status |= 2837 cpu_to_le16(SS_SENSE_LEN_VALID); 2838 ctio->u.status1.sense_length = 2839 cpu_to_le16(prm->sense_buffer_len); 2840 for (i = 0; i < prm->sense_buffer_len/4; i++) { 2841 uint32_t v; 2842 2843 v = get_unaligned_be32( 2844 &((uint32_t *)prm->sense_buffer)[i]); 2845 put_unaligned_le32(v, 2846 &((uint32_t *)ctio->u.status1.sense_data)[i]); 2847 } 2848 qlt_print_dif_err(prm); 2849 2850 } else { 2851 ctio->u.status1.flags &= 2852 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2853 ctio->u.status1.flags |= 2854 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2855 ctio->u.status1.sense_length = 0; 2856 memset(ctio->u.status1.sense_data, 0, 2857 sizeof(ctio->u.status1.sense_data)); 2858 } 2859 2860 /* Sense with len > 24, is it possible ??? */ 2861} 2862 2863static inline int 2864qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2865{ 2866 switch (se_cmd->prot_op) { 2867 case TARGET_PROT_DOUT_INSERT: 2868 case TARGET_PROT_DIN_STRIP: 2869 if (ql2xenablehba_err_chk >= 1) 2870 return 1; 2871 break; 2872 case TARGET_PROT_DOUT_PASS: 2873 case TARGET_PROT_DIN_PASS: 2874 if (ql2xenablehba_err_chk >= 2) 2875 return 1; 2876 break; 2877 case TARGET_PROT_DIN_INSERT: 2878 case TARGET_PROT_DOUT_STRIP: 2879 return 1; 2880 default: 2881 break; 2882 } 2883 return 0; 2884} 2885 2886static inline int 2887qla_tgt_ref_mask_check(struct se_cmd *se_cmd) 2888{ 2889 switch (se_cmd->prot_op) { 2890 case TARGET_PROT_DIN_INSERT: 2891 case TARGET_PROT_DOUT_INSERT: 2892 case TARGET_PROT_DIN_STRIP: 2893 case TARGET_PROT_DOUT_STRIP: 2894 case TARGET_PROT_DIN_PASS: 2895 case TARGET_PROT_DOUT_PASS: 2896 return 1; 2897 default: 2898 return 0; 2899 } 2900 return 0; 2901} 2902 2903/* 2904 * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command 2905 */ 2906static void 2907qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, 2908 uint16_t *pfw_prot_opts) 2909{ 2910 struct se_cmd *se_cmd = &cmd->se_cmd; 2911 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2912 scsi_qla_host_t *vha = cmd->tgt->vha; 2913 struct qla_hw_data *ha = vha->hw; 2914 uint32_t t32 = 0; 2915 2916 /* 2917 * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 2918 * have been immplemented by TCM, before AppTag is avail. 2919 * Look for modesense_handlers[] 2920 */ 2921 ctx->app_tag = 0; 2922 ctx->app_tag_mask[0] = 0x0; 2923 ctx->app_tag_mask[1] = 0x0; 2924 2925 if (IS_PI_UNINIT_CAPABLE(ha)) { 2926 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2927 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2928 *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; 2929 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2930 *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2931 } 2932 2933 t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); 2934 2935 switch (se_cmd->prot_type) { 2936 case TARGET_DIF_TYPE0_PROT: 2937 /* 2938 * No check for ql2xenablehba_err_chk, as it 2939 * would be an I/O error if hba tag generation 2940 * is not done. 2941 */ 2942 ctx->ref_tag = cpu_to_le32(lba); 2943 /* enable ALL bytes of the ref tag */ 2944 ctx->ref_tag_mask[0] = 0xff; 2945 ctx->ref_tag_mask[1] = 0xff; 2946 ctx->ref_tag_mask[2] = 0xff; 2947 ctx->ref_tag_mask[3] = 0xff; 2948 break; 2949 case TARGET_DIF_TYPE1_PROT: 2950 /* 2951 * For TYPE 1 protection: 16 bit GUARD tag, 32 bit 2952 * REF tag, and 16 bit app tag. 2953 */ 2954 ctx->ref_tag = cpu_to_le32(lba); 2955 if (!qla_tgt_ref_mask_check(se_cmd) || 2956 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2957 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2958 break; 2959 } 2960 /* enable ALL bytes of the ref tag */ 2961 ctx->ref_tag_mask[0] = 0xff; 2962 ctx->ref_tag_mask[1] = 0xff; 2963 ctx->ref_tag_mask[2] = 0xff; 2964 ctx->ref_tag_mask[3] = 0xff; 2965 break; 2966 case TARGET_DIF_TYPE2_PROT: 2967 /* 2968 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF 2969 * tag has to match LBA in CDB + N 2970 */ 2971 ctx->ref_tag = cpu_to_le32(lba); 2972 if (!qla_tgt_ref_mask_check(se_cmd) || 2973 !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { 2974 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2975 break; 2976 } 2977 /* enable ALL bytes of the ref tag */ 2978 ctx->ref_tag_mask[0] = 0xff; 2979 ctx->ref_tag_mask[1] = 0xff; 2980 ctx->ref_tag_mask[2] = 0xff; 2981 ctx->ref_tag_mask[3] = 0xff; 2982 break; 2983 case TARGET_DIF_TYPE3_PROT: 2984 /* For TYPE 3 protection: 16 bit GUARD only */ 2985 *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; 2986 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2987 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2988 break; 2989 } 2990} 2991 2992static inline int 2993qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) 2994{ 2995 struct dsd64 *cur_dsd; 2996 uint32_t transfer_length = 0; 2997 uint32_t data_bytes; 2998 uint32_t dif_bytes; 2999 uint8_t bundling = 1; 3000 struct crc_context *crc_ctx_pkt = NULL; 3001 struct qla_hw_data *ha; 3002 struct ctio_crc2_to_fw *pkt; 3003 dma_addr_t crc_ctx_dma; 3004 uint16_t fw_prot_opts = 0; 3005 struct qla_tgt_cmd *cmd = prm->cmd; 3006 struct se_cmd *se_cmd = &cmd->se_cmd; 3007 uint32_t h; 3008 struct atio_from_isp *atio = &prm->cmd->atio; 3009 struct qla_tc_param tc; 3010 uint16_t t16; 3011 scsi_qla_host_t *vha = cmd->vha; 3012 3013 ha = vha->hw; 3014 3015 pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; 3016 prm->pkt = pkt; 3017 memset(pkt, 0, sizeof(*pkt)); 3018 3019 ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, 3020 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 3021 cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, 3022 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 3023 3024 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 3025 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 3026 bundling = 0; 3027 3028 /* Compute dif len and adjust data len to incude protection */ 3029 data_bytes = cmd->bufflen; 3030 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 3031 3032 switch (se_cmd->prot_op) { 3033 case TARGET_PROT_DIN_INSERT: 3034 case TARGET_PROT_DOUT_STRIP: 3035 transfer_length = data_bytes; 3036 if (cmd->prot_sg_cnt) 3037 data_bytes += dif_bytes; 3038 break; 3039 case TARGET_PROT_DIN_STRIP: 3040 case TARGET_PROT_DOUT_INSERT: 3041 case TARGET_PROT_DIN_PASS: 3042 case TARGET_PROT_DOUT_PASS: 3043 transfer_length = data_bytes + dif_bytes; 3044 break; 3045 default: 3046 BUG(); 3047 break; 3048 } 3049 3050 if (!qlt_hba_err_chk_enabled(se_cmd)) 3051 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 3052 /* HBA error checking enabled */ 3053 else if (IS_PI_UNINIT_CAPABLE(ha)) { 3054 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 3055 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 3056 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 3057 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 3058 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 3059 } 3060 3061 switch (se_cmd->prot_op) { 3062 case TARGET_PROT_DIN_INSERT: 3063 case TARGET_PROT_DOUT_INSERT: 3064 fw_prot_opts |= PO_MODE_DIF_INSERT; 3065 break; 3066 case TARGET_PROT_DIN_STRIP: 3067 case TARGET_PROT_DOUT_STRIP: 3068 fw_prot_opts |= PO_MODE_DIF_REMOVE; 3069 break; 3070 case TARGET_PROT_DIN_PASS: 3071 case TARGET_PROT_DOUT_PASS: 3072 fw_prot_opts |= PO_MODE_DIF_PASS; 3073 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 3074 break; 3075 default:/* Normal Request */ 3076 fw_prot_opts |= PO_MODE_DIF_PASS; 3077 break; 3078 } 3079 3080 /* ---- PKT ---- */ 3081 /* Update entry type to indicate Command Type CRC_2 IOCB */ 3082 pkt->entry_type = CTIO_CRC2; 3083 pkt->entry_count = 1; 3084 pkt->vp_index = cmd->vp_idx; 3085 3086 h = qlt_make_handle(qpair); 3087 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 3088 /* 3089 * CTIO type 7 from the firmware doesn't provide a way to 3090 * know the initiator's LOOP ID, hence we can't find 3091 * the session and, so, the command. 3092 */ 3093 return -EAGAIN; 3094 } else 3095 qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; 3096 3097 pkt->handle = make_handle(qpair->req->id, h); 3098 pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; 3099 pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); 3100 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3101 pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3102 pkt->exchange_addr = atio->u.isp24.exchange_addr; 3103 3104 /* silence compile warning */ 3105 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3106 pkt->ox_id = cpu_to_le16(t16); 3107 3108 t16 = (atio->u.isp24.attr << 9); 3109 pkt->flags |= cpu_to_le16(t16); 3110 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 3111 3112 /* Set transfer direction */ 3113 if (cmd->dma_data_direction == DMA_TO_DEVICE) 3114 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 3115 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 3116 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 3117 3118 pkt->dseg_count = cpu_to_le16(prm->tot_dsds); 3119 /* Fibre channel byte count */ 3120 pkt->transfer_length = cpu_to_le32(transfer_length); 3121 3122 /* ----- CRC context -------- */ 3123 3124 /* Allocate CRC context from global pool */ 3125 crc_ctx_pkt = cmd->ctx = 3126 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 3127 3128 if (!crc_ctx_pkt) 3129 goto crc_queuing_error; 3130 3131 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 3132 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 3133 3134 /* Set handle */ 3135 crc_ctx_pkt->handle = pkt->handle; 3136 3137 qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); 3138 3139 put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); 3140 pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); 3141 3142 if (!bundling) { 3143 cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; 3144 } else { 3145 /* 3146 * Configure Bundling if we need to fetch interlaving 3147 * protection PCI accesses 3148 */ 3149 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 3150 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 3151 crc_ctx_pkt->u.bundling.dseg_count = 3152 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 3153 cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; 3154 } 3155 3156 /* Finish the common fields of CRC pkt */ 3157 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 3158 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 3159 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 3160 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 3161 3162 memset((uint8_t *)&tc, 0 , sizeof(tc)); 3163 tc.vha = vha; 3164 tc.blk_sz = cmd->blk_sz; 3165 tc.bufflen = cmd->bufflen; 3166 tc.sg = cmd->sg; 3167 tc.prot_sg = cmd->prot_sg; 3168 tc.ctx = crc_ctx_pkt; 3169 tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; 3170 3171 /* Walks data segments */ 3172 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 3173 3174 if (!bundling && prm->prot_seg_cnt) { 3175 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 3176 prm->tot_dsds, &tc)) 3177 goto crc_queuing_error; 3178 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 3179 (prm->tot_dsds - prm->prot_seg_cnt), &tc)) 3180 goto crc_queuing_error; 3181 3182 if (bundling && prm->prot_seg_cnt) { 3183 /* Walks dif segments */ 3184 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 3185 3186 cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; 3187 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 3188 prm->prot_seg_cnt, cmd)) 3189 goto crc_queuing_error; 3190 } 3191 return QLA_SUCCESS; 3192 3193crc_queuing_error: 3194 /* Cleanup will be performed by the caller */ 3195 qpair->req->outstanding_cmds[h] = NULL; 3196 3197 return QLA_FUNCTION_FAILED; 3198} 3199 3200/* 3201 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 3202 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 3203 */ 3204int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 3205 uint8_t scsi_status) 3206{ 3207 struct scsi_qla_host *vha = cmd->vha; 3208 struct qla_qpair *qpair = cmd->qpair; 3209 struct ctio7_to_24xx *pkt; 3210 struct qla_tgt_prm prm; 3211 uint32_t full_req_cnt = 0; 3212 unsigned long flags = 0; 3213 int res; 3214 int pre_xmit_res; 3215 3216 ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, 3217 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", 3218 (xmit_type & QLA_TGT_XMIT_STATUS) ? 3219 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 3220 &cmd->se_cmd, qpair->id); 3221 3222 pre_xmit_res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 3223 &full_req_cnt); 3224 /* 3225 * Check pre_xmit_res later because we want to check other errors 3226 * first. 3227 */ 3228 3229 /* Begin timer on the first call, not on SRR retry. */ 3230 if (likely(cmd->jiffies_at_hw_st_entry == 0)) 3231 cmd->jiffies_at_hw_st_entry = get_jiffies_64(); 3232 3233 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3234 3235 if (unlikely(cmd->sent_term_exchg || 3236 cmd->sess->deleted || 3237 !qpair->fw_started || 3238 cmd->reset_count != qpair->chip_reset)) { 3239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe101, 3240 "qla_target(%d): tag %lld: skipping send response for aborted cmd\n", 3241 vha->vp_idx, cmd->se_cmd.tag); 3242 qlt_unmap_sg(vha, cmd); 3243 cmd->state = QLA_TGT_STATE_PROCESSED; 3244 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3245 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3246 return 0; 3247 } 3248 3249 /* Check for errors from qlt_pre_xmit_response(). */ 3250 res = pre_xmit_res; 3251 if (unlikely(res)) 3252 goto out_unmap_unlock; 3253 3254 if (xmit_type == QLA_TGT_XMIT_STATUS) 3255 qpair->tgt_counters.core_qla_snd_status++; 3256 else 3257 qpair->tgt_counters.core_qla_que_buf++; 3258 3259 /* Does F/W have an IOCBs for this request */ 3260 res = qlt_check_reserve_free_req(qpair, full_req_cnt); 3261 if (unlikely(res)) 3262 goto out_unmap_unlock; 3263 3264 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 3265 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3266 else 3267 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3268 if (unlikely(res != 0)) { 3269 qpair->req->cnt += full_req_cnt; 3270 goto out_unmap_unlock; 3271 } 3272 3273 pkt = (struct ctio7_to_24xx *)prm.pkt; 3274 3275 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 3276 pkt->u.status0.flags |= 3277 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 3278 CTIO7_FLAGS_STATUS_MODE_0); 3279 3280 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3281 qlt_load_data_segments(&prm); 3282 3283 if (prm.add_status_pkt == 0) { 3284 if (xmit_type & QLA_TGT_XMIT_STATUS) { 3285 pkt->u.status0.scsi_status = 3286 cpu_to_le16(prm.rq_result); 3287 if (!cmd->edif) 3288 pkt->u.status0.residual = 3289 cpu_to_le32(prm.residual); 3290 3291 pkt->u.status0.flags |= cpu_to_le16( 3292 CTIO7_FLAGS_SEND_STATUS); 3293 if (qlt_need_explicit_conf(cmd, 0)) { 3294 pkt->u.status0.flags |= 3295 cpu_to_le16( 3296 CTIO7_FLAGS_EXPLICIT_CONFORM | 3297 CTIO7_FLAGS_CONFORM_REQ); 3298 } 3299 } 3300 3301 } else { 3302 /* 3303 * We have already made sure that there is sufficient 3304 * amount of request entries to not drop HW lock in 3305 * req_pkt(). 3306 */ 3307 struct ctio7_to_24xx *ctio = 3308 (struct ctio7_to_24xx *)qlt_get_req_pkt( 3309 qpair->req); 3310 3311 ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, 3312 "Building additional status packet 0x%p.\n", 3313 ctio); 3314 3315 /* 3316 * T10Dif: ctio_crc2_to_fw overlay ontop of 3317 * ctio7_to_24xx 3318 */ 3319 memcpy(ctio, pkt, sizeof(*ctio)); 3320 /* reset back to CTIO7 */ 3321 ctio->entry_count = 1; 3322 ctio->entry_type = CTIO_TYPE7; 3323 ctio->dseg_count = 0; 3324 ctio->u.status1.flags &= ~cpu_to_le16( 3325 CTIO7_FLAGS_DATA_IN); 3326 3327 /* Real finish is ctio_m1's finish */ 3328 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 3329 pkt->u.status0.flags |= cpu_to_le16( 3330 CTIO7_FLAGS_DONT_RET_CTIO); 3331 3332 /* qlt_24xx_init_ctio_to_isp will correct 3333 * all neccessary fields that's part of CTIO7. 3334 * There should be no residual of CTIO-CRC2 data. 3335 */ 3336 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 3337 &prm); 3338 } 3339 } else 3340 qlt_24xx_init_ctio_to_isp(pkt, &prm); 3341 3342 3343 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 3344 cmd->cmd_sent_to_fw = 1; 3345 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3346 3347 /* Memory Barrier */ 3348 wmb(); 3349 if (qpair->reqq_start_iocbs) 3350 qpair->reqq_start_iocbs(qpair); 3351 else 3352 qla2x00_start_iocbs(vha, qpair->req); 3353 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3354 3355 return 0; 3356 3357out_unmap_unlock: 3358 qlt_unmap_sg(vha, cmd); 3359 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3360 3361 return res; 3362} 3363EXPORT_SYMBOL(qlt_xmit_response); 3364 3365int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 3366{ 3367 struct ctio7_to_24xx *pkt; 3368 struct scsi_qla_host *vha = cmd->vha; 3369 struct qla_tgt *tgt = cmd->tgt; 3370 struct qla_tgt_prm prm; 3371 unsigned long flags = 0; 3372 int res = 0; 3373 int pci_map_res; 3374 struct qla_qpair *qpair = cmd->qpair; 3375 3376 /* Begin timer on the first call, not on SRR retry. */ 3377 if (likely(cmd->jiffies_at_hw_st_entry == 0)) 3378 cmd->jiffies_at_hw_st_entry = get_jiffies_64(); 3379 3380 memset(&prm, 0, sizeof(prm)); 3381 prm.cmd = cmd; 3382 prm.tgt = tgt; 3383 prm.sg = NULL; 3384 prm.req_cnt = 1; 3385 3386 /* Calculate number of entries and segments required */ 3387 pci_map_res = qlt_pci_map_calc_cnt(&prm); 3388 /* 3389 * Check pci_map_res later because we want to check other errors first. 3390 */ 3391 3392 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3393 3394 if (unlikely(cmd->sent_term_exchg || 3395 cmd->sess->deleted || 3396 !qpair->fw_started || 3397 cmd->reset_count != qpair->chip_reset)) { 3398 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe102, 3399 "qla_target(%d): tag %lld: skipping data-out for aborted cmd\n", 3400 vha->vp_idx, cmd->se_cmd.tag); 3401 qlt_unmap_sg(vha, cmd); 3402 cmd->aborted = 1; 3403 cmd->write_data_transferred = 0; 3404 cmd->state = QLA_TGT_STATE_DATA_IN; 3405 cmd->jiffies_at_hw_st_entry = 0; 3406 vha->hw->tgt.tgt_ops->handle_data(cmd); 3407 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3408 return 0; 3409 } 3410 3411 /* Check for errors from qlt_pci_map_calc_cnt(). */ 3412 if (unlikely(pci_map_res != 0)) { 3413 res = -EAGAIN; 3414 goto out_unlock_free_unmap; 3415 } 3416 3417 /* Does F/W have an IOCBs for this request */ 3418 res = qlt_check_reserve_free_req(qpair, prm.req_cnt); 3419 if (res != 0) 3420 goto out_unlock_free_unmap; 3421 if (cmd->se_cmd.prot_op) 3422 res = qlt_build_ctio_crc2_pkt(qpair, &prm); 3423 else 3424 res = qlt_24xx_build_ctio_pkt(qpair, &prm); 3425 3426 if (unlikely(res != 0)) { 3427 qpair->req->cnt += prm.req_cnt; 3428 goto out_unlock_free_unmap; 3429 } 3430 3431 pkt = (struct ctio7_to_24xx *)prm.pkt; 3432 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 3433 CTIO7_FLAGS_STATUS_MODE_0); 3434 3435 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 3436 qlt_load_data_segments(&prm); 3437 3438 cmd->state = QLA_TGT_STATE_NEED_DATA; 3439 cmd->cmd_sent_to_fw = 1; 3440 cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); 3441 3442 /* Memory Barrier */ 3443 wmb(); 3444 if (qpair->reqq_start_iocbs) 3445 qpair->reqq_start_iocbs(qpair); 3446 else 3447 qla2x00_start_iocbs(vha, qpair->req); 3448 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3449 3450 return res; 3451 3452out_unlock_free_unmap: 3453 cmd->jiffies_at_hw_st_entry = 0; 3454 qlt_unmap_sg(vha, cmd); 3455 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3456 3457 return res; 3458} 3459EXPORT_SYMBOL(qlt_rdy_to_xfer); 3460 3461 3462/* 3463 * it is assumed either hardware_lock or qpair lock is held. 3464 */ 3465static void 3466qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, 3467 struct ctio_crc_from_fw *sts) 3468{ 3469 uint8_t *ap = &sts->actual_dif[0]; 3470 uint8_t *ep = &sts->expected_dif[0]; 3471 uint64_t lba = cmd->se_cmd.t_task_lba; 3472 uint8_t scsi_status, sense_key, asc, ascq; 3473 struct scsi_qla_host *vha = cmd->vha; 3474 3475 cmd->trc_flags |= TRC_DIF_ERR; 3476 3477 cmd->a_guard = get_unaligned_be16(ap + 0); 3478 cmd->a_app_tag = get_unaligned_be16(ap + 2); 3479 cmd->a_ref_tag = get_unaligned_be32(ap + 4); 3480 3481 cmd->e_guard = get_unaligned_be16(ep + 0); 3482 cmd->e_app_tag = get_unaligned_be16(ep + 2); 3483 cmd->e_ref_tag = get_unaligned_be32(ep + 4); 3484 3485 ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, 3486 "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); 3487 3488 scsi_status = sense_key = asc = ascq = 0; 3489 3490 /* check appl tag */ 3491 if (cmd->e_app_tag != cmd->a_app_tag) { 3492 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, 3493 "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]", 3494 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3495 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3496 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3497 cmd->atio.u.isp24.fcp_hdr.ox_id); 3498 3499 cmd->dif_err_code = DIF_ERR_APP; 3500 scsi_status = SAM_STAT_CHECK_CONDITION; 3501 sense_key = ABORTED_COMMAND; 3502 asc = 0x10; 3503 ascq = 0x2; 3504 } 3505 3506 /* check ref tag */ 3507 if (cmd->e_ref_tag != cmd->a_ref_tag) { 3508 ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, 3509 "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] ", 3510 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3511 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3512 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3513 cmd->atio.u.isp24.fcp_hdr.ox_id); 3514 3515 cmd->dif_err_code = DIF_ERR_REF; 3516 scsi_status = SAM_STAT_CHECK_CONDITION; 3517 sense_key = ABORTED_COMMAND; 3518 asc = 0x10; 3519 ascq = 0x3; 3520 goto out; 3521 } 3522 3523 /* check guard */ 3524 if (cmd->e_guard != cmd->a_guard) { 3525 ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, 3526 "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]", 3527 cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, 3528 cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, 3529 cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, 3530 cmd->atio.u.isp24.fcp_hdr.ox_id); 3531 3532 cmd->dif_err_code = DIF_ERR_GRD; 3533 scsi_status = SAM_STAT_CHECK_CONDITION; 3534 sense_key = ABORTED_COMMAND; 3535 asc = 0x10; 3536 ascq = 0x1; 3537 } 3538out: 3539 switch (cmd->state) { 3540 case QLA_TGT_STATE_NEED_DATA: 3541 /* handle_data will load DIF error code */ 3542 cmd->state = QLA_TGT_STATE_DATA_IN; 3543 cmd->jiffies_at_hw_st_entry = 0; 3544 vha->hw->tgt.tgt_ops->handle_data(cmd); 3545 break; 3546 default: 3547 if (cmd->sent_term_exchg) { 3548 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3549 break; 3550 } 3551 3552 qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, 3553 ascq); 3554 /* assume scsi status gets out on the wire. 3555 * Will not wait for completion. 3556 */ 3557 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3558 break; 3559 } 3560} 3561 3562/* If hardware_lock held on entry, might drop it, then reaquire */ 3563/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3564static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3565 struct imm_ntfy_from_isp *ntfy) 3566{ 3567 struct nack_to_isp *nack; 3568 struct qla_hw_data *ha = vha->hw; 3569 request_t *pkt; 3570 int ret = 0; 3571 3572 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3573 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3574 3575 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 3576 if (pkt == NULL) { 3577 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3578 "qla_target(%d): %s failed: unable to allocate " 3579 "request packet\n", vha->vp_idx, __func__); 3580 return -ENOMEM; 3581 } 3582 3583 pkt->entry_type = NOTIFY_ACK_TYPE; 3584 pkt->entry_count = 1; 3585 pkt->handle = QLA_TGT_SKIP_HANDLE; 3586 3587 nack = (struct nack_to_isp *)pkt; 3588 nack->ox_id = ntfy->ox_id; 3589 3590 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3591 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3592 nack->u.isp24.flags = ntfy->u.isp24.flags & 3593 cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); 3594 } 3595 3596 /* terminate */ 3597 nack->u.isp24.flags |= 3598 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3599 3600 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3601 nack->u.isp24.status = ntfy->u.isp24.status; 3602 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3603 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3604 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3605 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3606 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3607 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3608 3609 qla2x00_start_iocbs(vha, vha->req); 3610 return ret; 3611} 3612 3613static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3614 struct imm_ntfy_from_isp *imm, int ha_locked) 3615{ 3616 int rc; 3617 3618 WARN_ON_ONCE(!ha_locked); 3619 rc = __qlt_send_term_imm_notif(vha, imm); 3620 pr_debug("rc = %d\n", rc); 3621} 3622 3623/* 3624 * Handle a SRR that had been previously associated with a command when the 3625 * command has been aborted or otherwise cannot process the SRR. 3626 * 3627 * If reject is true, then attempt to reject the SRR. Otherwise abort the 3628 * immediate notify exchange. 3629 */ 3630void qlt_srr_abort(struct qla_tgt_cmd *cmd, bool reject) 3631{ 3632 struct scsi_qla_host *vha = cmd->vha; 3633 struct qla_tgt_srr *srr = cmd->srr; 3634 3635 if (srr->imm_ntfy_recvd) { 3636 if (reject) 3637 srr->reject = true; 3638 else 3639 srr->aborted = true; 3640 3641 if (srr->ctio_recvd) { 3642 /* 3643 * The SRR should already be scheduled for processing, 3644 * and the SRR processing code should see that the cmd 3645 * has been aborted and take appropriate action. In 3646 * addition, the cmd refcount should have been 3647 * incremented, preventing the cmd from being freed 3648 * until SRR processing is done. 3649 */ 3650 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1102e, 3651 "qla_target(%d): tag %lld: %s: SRR already scheduled\n", 3652 vha->vp_idx, cmd->se_cmd.tag, __func__); 3653 } else { 3654 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3655 unsigned long flags; 3656 3657 /* Shedule processing for the SRR immediate notify. */ 3658 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1102f, 3659 "qla_target(%d): tag %lld: %s: schedule SRR %s\n", 3660 vha->vp_idx, cmd->se_cmd.tag, __func__, 3661 reject ? "reject" : "abort"); 3662 cmd->srr = NULL; 3663 srr->cmd = NULL; 3664 spin_lock_irqsave(&tgt->srr_lock, flags); 3665 list_add_tail(&srr->srr_list_entry, &tgt->srr_list); 3666 queue_work(qla_tgt_wq, &tgt->srr_work); 3667 spin_unlock_irqrestore(&tgt->srr_lock, flags); 3668 } 3669 } else { 3670 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11030, 3671 "qla_target(%d): tag %lld: %s: no IMM SRR; free SRR\n", 3672 vha->vp_idx, cmd->se_cmd.tag, __func__); 3673 cmd->srr = NULL; 3674 kfree(srr); 3675 } 3676} 3677EXPORT_SYMBOL(qlt_srr_abort); 3678 3679/* 3680 * If hardware_lock held on entry, might drop it, then reaquire 3681 * This function sends the appropriate CTIO to ISP 2xxx or 24xx 3682 */ 3683static int __qlt_send_term_exchange(struct qla_qpair *qpair, 3684 struct qla_tgt_cmd *cmd, 3685 struct atio_from_isp *atio) 3686{ 3687 struct ctio7_to_24xx *ctio24; 3688 struct scsi_qla_host *vha; 3689 uint16_t loop_id; 3690 uint16_t temp; 3691 3692 if (cmd) { 3693 vha = cmd->vha; 3694 loop_id = cmd->loop_id; 3695 } else { 3696 port_id_t id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 3697 struct qla_hw_data *ha; 3698 struct fc_port *sess; 3699 unsigned long flags; 3700 3701 vha = qpair->vha; 3702 ha = vha->hw; 3703 3704 /* 3705 * CTIO7_NHANDLE_UNRECOGNIZED works when aborting an idle 3706 * command but not when aborting a command with an active CTIO 3707 * exchange. 3708 */ 3709 loop_id = CTIO7_NHANDLE_UNRECOGNIZED; 3710 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 3711 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 3712 if (sess) 3713 loop_id = sess->loop_id; 3714 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 3715 } 3716 3717 if (cmd) { 3718 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe009, 3719 "qla_target(%d): tag %lld: Sending TERM EXCH CTIO state %d cmd_sent_to_fw %u\n", 3720 vha->vp_idx, cmd->se_cmd.tag, cmd->state, 3721 cmd->cmd_sent_to_fw); 3722 } else { 3723 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe009, 3724 "qla_target(%d): tag %u: Sending TERM EXCH CTIO (no cmd)\n", 3725 vha->vp_idx, le32_to_cpu(atio->u.isp24.exchange_addr)); 3726 } 3727 3728 ctio24 = qla2x00_alloc_iocbs_ready(qpair, NULL); 3729 if (!ctio24) { 3730 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3731 "qla_target(%d): %s failed: unable to allocate " 3732 "request packet\n", vha->vp_idx, __func__); 3733 return -ENOMEM; 3734 } 3735 3736 qpair->tgt_counters.num_term_xchg_sent++; 3737 3738 ctio24->entry_type = CTIO_TYPE7; 3739 ctio24->entry_count = 1; 3740 ctio24->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3741 ctio24->nport_handle = cpu_to_le16(loop_id); 3742 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3743 ctio24->vp_index = vha->vp_idx; 3744 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 3745 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3746 temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | 3747 CTIO7_FLAGS_TERMINATE; 3748 ctio24->u.status1.flags = cpu_to_le16(temp); 3749 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3750 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3751 3752 /* Memory Barrier */ 3753 wmb(); 3754 if (qpair->reqq_start_iocbs) 3755 qpair->reqq_start_iocbs(qpair); 3756 else 3757 qla2x00_start_iocbs(vha, qpair->req); 3758 return 0; 3759} 3760 3761/* 3762 * Aborting a command that is active in the FW (i.e. cmd->cmd_sent_to_fw == 1) 3763 * will usually trigger the FW to send a completion CTIO with error status, 3764 * and the driver will then call the ->handle_data() or ->free_cmd() callbacks. 3765 * This can be used to clear a command that is locked up in the FW unless there 3766 * is something more seriously wrong. 3767 * 3768 * Aborting a command that is not active in the FW (i.e. 3769 * cmd->cmd_sent_to_fw == 0) will not directly trigger any callbacks. Instead, 3770 * when the target mode midlevel calls qlt_rdy_to_xfer() or 3771 * qlt_xmit_response(), the driver will see that the cmd has been aborted and 3772 * call the appropriate callback immediately without performing the requested 3773 * operation. 3774 */ 3775void qlt_send_term_exchange(struct qla_qpair *qpair, 3776 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked) 3777{ 3778 struct scsi_qla_host *vha; 3779 unsigned long flags = 0; 3780 int rc; 3781 3782 /* why use different vha? NPIV */ 3783 if (cmd) 3784 vha = cmd->vha; 3785 else 3786 vha = qpair->vha; 3787 3788 if (ha_locked) { 3789 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3790 if (rc == -ENOMEM) 3791 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3792 goto done; 3793 } 3794 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3795 rc = __qlt_send_term_exchange(qpair, cmd, atio); 3796 if (rc == -ENOMEM) 3797 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3798 3799done: 3800 if (cmd) { 3801 /* 3802 * Set this even if -ENOMEM above, since term exchange will be 3803 * sent eventually... 3804 */ 3805 cmd->sent_term_exchg = 1; 3806 cmd->aborted = 1; 3807 cmd->jiffies_at_term_exchg = jiffies; 3808 } 3809 3810 if (!ha_locked) 3811 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3812 3813 return; 3814} 3815EXPORT_SYMBOL(qlt_send_term_exchange); 3816 3817static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3818{ 3819 struct list_head free_list; 3820 struct qla_tgt_cmd *cmd, *tcmd; 3821 3822 vha->hw->tgt.leak_exchg_thresh_hold = 3823 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3824 3825 cmd = tcmd = NULL; 3826 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3827 INIT_LIST_HEAD(&free_list); 3828 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3829 3830 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3831 list_del(&cmd->cmd_list); 3832 /* This cmd was never sent to TCM. There is no need 3833 * to schedule free or call free_cmd 3834 */ 3835 qlt_free_cmd(cmd); 3836 vha->hw->tgt.num_qfull_cmds_alloc--; 3837 } 3838 } 3839 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3840} 3841 3842static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3843{ 3844 uint32_t total_leaked; 3845 3846 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3847 3848 if (vha->hw->tgt.leak_exchg_thresh_hold && 3849 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3850 3851 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3852 "Chip reset due to exchange starvation: %d/%d.\n", 3853 total_leaked, vha->hw->cur_fw_xcb_count); 3854 3855 if (IS_P3P_TYPE(vha->hw)) 3856 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3857 else 3858 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3859 qla2xxx_wake_dpc(vha); 3860 } 3861 3862} 3863 3864int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3865{ 3866 struct scsi_qla_host *vha = cmd->vha; 3867 struct qla_qpair *qpair = cmd->qpair; 3868 unsigned long flags; 3869 3870 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 3871 3872 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3873 "qla_target(%d): tag %lld: cmd being aborted (state %d) %s; %s\n", 3874 vha->vp_idx, cmd->se_cmd.tag, cmd->state, 3875 cmd->cmd_sent_to_fw ? "sent to fw" : "not sent to fw", 3876 cmd->aborted ? "aborted" : "not aborted"); 3877 3878 if (cmd->state != QLA_TGT_STATE_DONE && !cmd->sent_term_exchg) { 3879 if (!qpair->fw_started || 3880 cmd->reset_count != qpair->chip_reset) { 3881 /* 3882 * Chip was reset; just pretend that we sent the term 3883 * exchange. 3884 */ 3885 cmd->sent_term_exchg = 1; 3886 cmd->aborted = 1; 3887 cmd->jiffies_at_term_exchg = jiffies; 3888 } else { 3889 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1); 3890 } 3891 } 3892 3893 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 3894 3895 return 0; 3896} 3897EXPORT_SYMBOL(qlt_abort_cmd); 3898 3899void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3900{ 3901 struct fc_port *sess = cmd->sess; 3902 3903 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3904 "%s: se_cmd[%p] ox_id %04x\n", 3905 __func__, &cmd->se_cmd, 3906 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3907 3908 BUG_ON(cmd->cmd_in_wq); 3909 3910 if (!cmd->q_full) 3911 qlt_decr_num_pend_cmds(cmd->vha); 3912 3913 BUG_ON(cmd->sg_mapped); 3914 if (unlikely(cmd->free_sg)) { 3915 cmd->free_sg = 0; 3916 qlt_free_sg(cmd); 3917 } 3918 if (unlikely(cmd->srr)) 3919 qlt_srr_abort(cmd, false); 3920 3921 if (unlikely(cmd->aborted || 3922 (cmd->trc_flags & (TRC_CTIO_STRANGE | TRC_CTIO_ERR | 3923 TRC_SRR_CTIO | TRC_SRR_IMM)))) { 3924 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe086, 3925 "qla_target(%d): tag %lld: free cmd (trc_flags %x, aborted %u, sent_term_exchg %u, rsp_sent %u)\n", 3926 cmd->vha->vp_idx, cmd->se_cmd.tag, 3927 cmd->trc_flags, cmd->aborted, cmd->sent_term_exchg, 3928 cmd->rsp_sent); 3929 } 3930 3931 if (unlikely(cmd->cdb != &cmd->atio.u.isp24.fcp_cmnd.cdb[0])) { 3932 kfree(cmd->cdb); 3933 cmd->cdb = &cmd->atio.u.isp24.fcp_cmnd.cdb[0]; 3934 cmd->cdb_len = 16; 3935 } 3936 3937 cmd->jiffies_at_free = get_jiffies_64(); 3938 3939 if (!sess || !sess->se_sess) { 3940 WARN_ON(1); 3941 return; 3942 } 3943 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 3944} 3945EXPORT_SYMBOL(qlt_free_cmd); 3946 3947/* 3948 * Process a CTIO response for a SCSI command that failed due to SRR. 3949 * 3950 * qpair->qp_lock_ptr supposed to be held on entry 3951 */ 3952static int qlt_prepare_srr_ctio(struct qla_qpair *qpair, 3953 struct qla_tgt_cmd *cmd) 3954{ 3955 struct scsi_qla_host *vha = cmd->vha; 3956 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3957 struct qla_tgt_srr *srr; 3958 3959 cmd->trc_flags |= TRC_SRR_CTIO; 3960 3961 srr = cmd->srr; 3962 if (srr != NULL) { 3963 /* qlt_prepare_srr_imm() was called first. */ 3964 3965 WARN_ON(srr->ctio_recvd); 3966 WARN_ON(!srr->imm_ntfy_recvd); 3967 3968 if (vha->hw->tgt.tgt_ops->get_cmd_ref(cmd)) { 3969 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11037, 3970 "qla_target(%d): tag %lld: unable to get cmd ref for SRR processing\n", 3971 vha->vp_idx, cmd->se_cmd.tag); 3972 qlt_srr_abort(cmd, true); 3973 return -ESHUTDOWN; 3974 } 3975 3976 srr->ctio_recvd = true; 3977 3978 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1100f, 3979 "qla_target(%d): tag %lld: Scheduling SRR work\n", 3980 vha->vp_idx, cmd->se_cmd.tag); 3981 3982 /* Schedule the srr for processing in qlt_handle_srr(). */ 3983 /* IRQ is already OFF */ 3984 spin_lock(&tgt->srr_lock); 3985 list_add_tail(&srr->srr_list_entry, &tgt->srr_list); 3986 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &tgt->srr_work); 3987 spin_unlock(&tgt->srr_lock); 3988 return 0; 3989 } 3990 3991 srr = kzalloc(sizeof(*srr), GFP_ATOMIC); 3992 if (!srr) 3993 return -ENOMEM; 3994 3995 /* Expect qlt_prepare_srr_imm() to be called. */ 3996 srr->ctio_recvd = true; 3997 srr->cmd = cmd; 3998 srr->reset_count = cmd->reset_count; 3999 cmd->srr = srr; 4000 return 0; 4001} 4002 4003/* ha->hardware_lock supposed to be held on entry */ 4004static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 4005 struct rsp_que *rsp, uint32_t handle, uint8_t cmd_type, 4006 const void *ctio) 4007{ 4008 void *cmd = NULL; 4009 struct req_que *req; 4010 int qid = GET_QID(handle); 4011 uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; 4012 4013 if (unlikely(h == QLA_TGT_SKIP_HANDLE)) 4014 return NULL; 4015 4016 if (qid == rsp->req->id) { 4017 req = rsp->req; 4018 } else if (vha->hw->req_q_map[qid]) { 4019 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, 4020 "qla_target(%d): CTIO completion with different QID %d handle %x\n", 4021 vha->vp_idx, rsp->id, handle); 4022 req = vha->hw->req_q_map[qid]; 4023 } else { 4024 return NULL; 4025 } 4026 4027 h &= QLA_CMD_HANDLE_MASK; 4028 4029 if (h == QLA_TGT_NULL_HANDLE) { 4030 /* We can't get loop ID from CTIO7 */ 4031 ql_dbg(ql_dbg_tgt, vha, 0xe054, 4032 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 4033 "support NULL handles\n", vha->vp_idx); 4034 return NULL; 4035 } 4036 if (unlikely(h >= req->num_outstanding_cmds)) { 4037 ql_dbg(ql_dbg_tgt, vha, 0xe052, 4038 "qla_target(%d): Wrong handle %x received\n", 4039 vha->vp_idx, handle); 4040 return NULL; 4041 } 4042 4043 /* 4044 * We passed a numeric handle for a cmd to the hardware, and the 4045 * hardware passed the handle back to us. Look up the associated cmd, 4046 * and validate that the cmd_type and exchange address match what the 4047 * caller expects. This guards against buggy HBA firmware that returns 4048 * the same CTIO multiple times. 4049 */ 4050 4051 cmd = req->outstanding_cmds[h]; 4052 4053 if (unlikely(cmd == NULL)) { 4054 if (cmd_type == TYPE_TGT_CMD) { 4055 __le32 ctio_exchange_addr = 4056 ((const struct ctio7_from_24xx *)ctio)-> 4057 exchange_address; 4058 4059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe053, 4060 "qla_target(%d): tag %u: handle %x: cmd detached; ignoring CTIO (handle %x req->id %d rsp->id %d)\n", 4061 vha->vp_idx, le32_to_cpu(ctio_exchange_addr), h, 4062 handle, req->id, rsp->id); 4063 } else { 4064 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe053, 4065 "qla_target(%d): cmd detached; ignoring CTIO (handle %x req->id %d rsp->id %d)\n", 4066 vha->vp_idx, handle, req->id, rsp->id); 4067 } 4068 return NULL; 4069 } 4070 4071 if (unlikely(((srb_t *)cmd)->cmd_type != cmd_type)) { 4072 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe087, 4073 "qla_target(%d): handle %x: cmd detached; ignoring CTIO (cmd_type mismatch)\n", 4074 vha->vp_idx, h); 4075 return NULL; 4076 } 4077 4078 switch (cmd_type) { 4079 case TYPE_TGT_CMD: { 4080 __le32 ctio_exchange_addr = 4081 ((const struct ctio7_from_24xx *)ctio)-> 4082 exchange_address; 4083 __le32 cmd_exchange_addr = 4084 ((struct qla_tgt_cmd *)cmd)-> 4085 atio.u.isp24.exchange_addr; 4086 4087 BUILD_BUG_ON(offsetof(struct ctio7_from_24xx, 4088 exchange_address) != 4089 offsetof(struct ctio_crc_from_fw, 4090 exchange_address)); 4091 4092 if (unlikely(ctio_exchange_addr != cmd_exchange_addr)) { 4093 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe088, 4094 "qla_target(%d): tag %u: handle %x: cmd detached; ignoring CTIO (exchange address mismatch)\n", 4095 vha->vp_idx, le32_to_cpu(ctio_exchange_addr), h); 4096 return NULL; 4097 } 4098 break; 4099 } 4100 4101 case TYPE_TGT_TMCMD: { 4102 __le32 ctio_exchange_addr = 4103 ((const struct abts_resp_from_24xx_fw *)ctio)-> 4104 exchange_address; 4105 __le32 cmd_exchange_addr = 4106 ((struct qla_tgt_mgmt_cmd *)cmd)-> 4107 orig_iocb.abts.exchange_address; 4108 4109 if (unlikely(ctio_exchange_addr != cmd_exchange_addr)) { 4110 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe089, 4111 "qla_target(%d): ABTS: handle %x: cmd detached; ignoring CTIO (exchange address mismatch)\n", 4112 vha->vp_idx, h); 4113 return NULL; 4114 } 4115 break; 4116 } 4117 } 4118 4119 req->outstanding_cmds[h] = NULL; 4120 4121 return cmd; 4122} 4123 4124/* 4125 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4126 */ 4127static void qlt_do_ctio_completion(struct scsi_qla_host *vha, 4128 struct rsp_que *rsp, uint32_t handle, uint32_t status, 4129 struct ctio7_from_24xx *ctio) 4130{ 4131 struct qla_hw_data *ha = vha->hw; 4132 struct qla_tgt_cmd *cmd; 4133 struct qla_qpair *qpair = rsp->qpair; 4134 uint16_t ctio_flags; 4135 4136 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 4137 /* That could happen only in case of an error/reset/abort */ 4138 if (status != CTIO_SUCCESS) { 4139 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 4140 "Intermediate CTIO received" 4141 " (status %x)\n", status); 4142 } 4143 return; 4144 } 4145 4146 ctio_flags = le16_to_cpu(ctio->flags); 4147 4148 cmd = qlt_ctio_to_cmd(vha, rsp, handle, TYPE_TGT_CMD, ctio); 4149 if (unlikely(cmd == NULL)) { 4150 if ((handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE && 4151 (ctio_flags & 0xe1ff) == (CTIO7_FLAGS_STATUS_MODE_1 | 4152 CTIO7_FLAGS_TERMINATE)) { 4153 u32 tag = le32_to_cpu(ctio->exchange_address); 4154 4155 if (status == CTIO_SUCCESS) 4156 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe083, 4157 "qla_target(%d): tag %u: term exchange successful\n", 4158 vha->vp_idx, tag); 4159 else 4160 ql_dbg(ql_dbg_tgt_mgt, vha, 0xe084, 4161 "qla_target(%d): tag %u: term exchange failed; status = 0x%x\n", 4162 vha->vp_idx, tag, status); 4163 } 4164 return; 4165 } 4166 4167 if ((ctio_flags & CTIO7_FLAGS_DATA_OUT) && cmd->sess) 4168 qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, ctio); 4169 4170 cmd->cmd_sent_to_fw = 0; 4171 4172 qlt_unmap_sg(vha, cmd); 4173 4174 if (unlikely(status != CTIO_SUCCESS)) { 4175 u8 op = cmd->cdb ? cmd->cdb[0] : 0; 4176 bool term_exchg = false; 4177 4178 /* 4179 * If the hardware terminated the exchange, then we don't need 4180 * to send an explicit term exchange message. 4181 */ 4182 if (ctio_flags & OF_TERM_EXCH) { 4183 cmd->sent_term_exchg = 1; 4184 cmd->aborted = 1; 4185 cmd->jiffies_at_term_exchg = jiffies; 4186 } 4187 4188 switch (status & 0xFFFF) { 4189 case CTIO_INVALID_RX_ID: 4190 term_exchg = true; 4191 if (printk_ratelimit()) 4192 dev_info(&vha->hw->pdev->dev, 4193 "qla_target(%d): tag %lld, op %x: CTIO with INVALID_RX_ID status 0x%x received (state %d, port %8phC, LUN %lld, ATIO attr %x, CTIO Flags %x|%x)\n", 4194 vha->vp_idx, cmd->se_cmd.tag, op, 4195 status, cmd->state, cmd->sess->port_name, 4196 cmd->unpacked_lun, cmd->atio.u.isp24.attr, 4197 ((cmd->ctio_flags >> 9) & 0xf), 4198 cmd->ctio_flags); 4199 break; 4200 4201 case CTIO_LIP_RESET: 4202 case CTIO_TARGET_RESET: 4203 case CTIO_ABORTED: 4204 term_exchg = true; 4205 fallthrough; 4206 case CTIO_TIMEOUT: 4207 { 4208 const char *status_str; 4209 4210 switch (status & 0xFFFF) { 4211 case CTIO_LIP_RESET: 4212 status_str = "LIP_RESET"; 4213 break; 4214 case CTIO_TARGET_RESET: 4215 status_str = "TARGET_RESET"; 4216 break; 4217 case CTIO_ABORTED: 4218 status_str = "ABORTED"; 4219 break; 4220 case CTIO_TIMEOUT: 4221 default: 4222 status_str = "TIMEOUT"; 4223 break; 4224 } 4225 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 4226 "qla_target(%d): tag %lld, op %x: CTIO with %s status 0x%x received (state %d, port %8phC, LUN %lld)\n", 4227 vha->vp_idx, cmd->se_cmd.tag, op, 4228 status_str, status, cmd->state, 4229 cmd->sess->port_name, cmd->unpacked_lun); 4230 break; 4231 } 4232 4233 case CTIO_PORT_LOGGED_OUT: 4234 case CTIO_PORT_UNAVAILABLE: 4235 { 4236 int logged_out = 4237 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 4238 4239 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 4240 "qla_target(%d): tag %lld, op %x: CTIO with %s status 0x%x received (state %d, port %8phC, LUN %lld)\n", 4241 vha->vp_idx, cmd->se_cmd.tag, op, 4242 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 4243 status, cmd->state, cmd->sess->port_name, 4244 cmd->unpacked_lun); 4245 4246 term_exchg = true; 4247 if (logged_out && cmd->sess) { 4248 /* 4249 * Session is already logged out, but we need 4250 * to notify initiator, who's not aware of this 4251 */ 4252 cmd->sess->send_els_logo = 1; 4253 ql_dbg(ql_dbg_disc, vha, 0x20f8, 4254 "%s %d %8phC post del sess\n", 4255 __func__, __LINE__, cmd->sess->port_name); 4256 4257 qlt_schedule_sess_for_deletion(cmd->sess); 4258 } 4259 break; 4260 } 4261 4262 case CTIO_SRR_RECEIVED: 4263 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1100e, 4264 "qla_target(%d): tag %lld, op %x: CTIO with SRR status 0x%x received (state %d, port %8phC, LUN %lld, bufflen %d)\n", 4265 vha->vp_idx, cmd->se_cmd.tag, op, status, 4266 cmd->state, cmd->sess->port_name, 4267 cmd->unpacked_lun, cmd->bufflen); 4268 4269 if (qlt_prepare_srr_ctio(qpair, cmd) == 0) 4270 return; 4271 break; 4272 4273 case CTIO_DIF_ERROR: { 4274 struct ctio_crc_from_fw *crc = 4275 (struct ctio_crc_from_fw *)ctio; 4276 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 4277 "qla_target(%d): tag %lld, op %x: CTIO with DIF_ERROR status 0x%x received (state %d, port %8phC, LUN %lld, actual_dif[0x%llx] expect_dif[0x%llx])\n", 4278 vha->vp_idx, cmd->se_cmd.tag, op, status, 4279 cmd->state, cmd->sess->port_name, 4280 cmd->unpacked_lun, 4281 *((u64 *)&crc->actual_dif[0]), 4282 *((u64 *)&crc->expected_dif[0])); 4283 4284 qlt_handle_dif_error(qpair, cmd, crc); 4285 return; 4286 } 4287 4288 case CTIO_FAST_AUTH_ERR: 4289 case CTIO_FAST_INCOMP_PAD_LEN: 4290 case CTIO_FAST_INVALID_REQ: 4291 case CTIO_FAST_SPI_ERR: 4292 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4293 "qla_target(%d): tag %lld, op %x: CTIO with EDIF error status 0x%x received (state %d, port %8phC, LUN %lld)\n", 4294 vha->vp_idx, cmd->se_cmd.tag, op, status, 4295 cmd->state, cmd->sess->port_name, 4296 cmd->unpacked_lun); 4297 break; 4298 4299 default: 4300 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 4301 "qla_target(%d): tag %lld, op %x: CTIO with error status 0x%x received (state %d, port %8phC, LUN %lld)\n", 4302 vha->vp_idx, cmd->se_cmd.tag, op, status, 4303 cmd->state, cmd->sess->port_name, 4304 cmd->unpacked_lun); 4305 break; 4306 } 4307 4308 cmd->trc_flags |= TRC_CTIO_ERR; 4309 4310 /* 4311 * In state QLA_TGT_STATE_NEED_DATA the failed CTIO was for 4312 * Data-Out, so either abort the exchange or try sending check 4313 * condition with sense data depending on the severity of 4314 * the error. In state QLA_TGT_STATE_PROCESSED the failed CTIO 4315 * was for status (and possibly Data-In), so don't try sending 4316 * an error status again in that case (if the error was for 4317 * Data-In with status, we could try sending status without 4318 * Data-In, but we don't do that currently). 4319 */ 4320 if (!cmd->sent_term_exchg && 4321 (term_exchg || cmd->state != QLA_TGT_STATE_NEED_DATA)) 4322 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1); 4323 } 4324 4325 if (unlikely(cmd->srr != NULL)) { 4326 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11031, 4327 "qla_target(%d): tag %lld, op %x: expected CTIO with SRR status; got status 0x%x: state %d, bufflen %d\n", 4328 vha->vp_idx, cmd->se_cmd.tag, 4329 cmd->cdb ? cmd->cdb[0] : 0, status, cmd->state, 4330 cmd->bufflen); 4331 qlt_srr_abort(cmd, true); 4332 } 4333 4334 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 4335 cmd->trc_flags |= TRC_CTIO_DONE; 4336 4337 if (likely(status == CTIO_SUCCESS)) 4338 cmd->rsp_sent = 1; 4339 4340 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4341 cmd->state = QLA_TGT_STATE_DATA_IN; 4342 4343 if (status == CTIO_SUCCESS) 4344 cmd->write_data_transferred = 1; 4345 4346 cmd->jiffies_at_hw_st_entry = 0; 4347 ha->tgt.tgt_ops->handle_data(cmd); 4348 return; 4349 } else if (cmd->aborted) { 4350 cmd->trc_flags |= TRC_CTIO_ABORTED; 4351 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 4352 "qla_target(%d): tag %lld: Aborted command finished\n", 4353 vha->vp_idx, cmd->se_cmd.tag); 4354 } else { 4355 cmd->trc_flags |= TRC_CTIO_STRANGE; 4356 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 4357 "qla_target(%d): tag %lld: A command in state (%d) should not return a CTIO complete\n", 4358 vha->vp_idx, cmd->se_cmd.tag, cmd->state); 4359 } 4360 4361 if (unlikely(status != CTIO_SUCCESS) && 4362 !cmd->aborted) { 4363 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 4364 dump_stack(); 4365 } 4366 4367 ha->tgt.tgt_ops->free_cmd(cmd); 4368} 4369 4370static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 4371 uint8_t task_codes) 4372{ 4373 int fcp_task_attr; 4374 4375 switch (task_codes) { 4376 case ATIO_SIMPLE_QUEUE: 4377 fcp_task_attr = TCM_SIMPLE_TAG; 4378 break; 4379 case ATIO_HEAD_OF_QUEUE: 4380 fcp_task_attr = TCM_HEAD_TAG; 4381 break; 4382 case ATIO_ORDERED_QUEUE: 4383 fcp_task_attr = TCM_ORDERED_TAG; 4384 break; 4385 case ATIO_ACA_QUEUE: 4386 fcp_task_attr = TCM_ACA_TAG; 4387 break; 4388 case ATIO_UNTAGGED: 4389 fcp_task_attr = TCM_SIMPLE_TAG; 4390 break; 4391 default: 4392 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 4393 "qla_target: unknown task code %x, use ORDERED instead\n", 4394 task_codes); 4395 fcp_task_attr = TCM_ORDERED_TAG; 4396 break; 4397 } 4398 4399 return fcp_task_attr; 4400} 4401 4402/* 4403 * Process context for I/O path into tcm_qla2xxx code 4404 */ 4405static void __qlt_do_work(struct qla_tgt_cmd *cmd) 4406{ 4407 scsi_qla_host_t *vha = cmd->vha; 4408 struct qla_hw_data *ha = vha->hw; 4409 struct fc_port *sess = cmd->sess; 4410 struct atio_from_isp *atio = &cmd->atio; 4411 unsigned long flags; 4412 uint32_t data_length; 4413 int ret, fcp_task_attr, data_dir, bidi = 0; 4414 struct qla_qpair *qpair = cmd->qpair; 4415 4416 cmd->cmd_in_wq = 0; 4417 cmd->trc_flags |= TRC_DO_WORK; 4418 4419 if (cmd->aborted) { 4420 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 4421 "cmd with tag %u is aborted\n", 4422 cmd->atio.u.isp24.exchange_addr); 4423 goto out_term; 4424 } 4425 4426 cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); 4427 4428 if (atio->u.isp24.fcp_cmnd.rddata && 4429 atio->u.isp24.fcp_cmnd.wrdata) { 4430 bidi = 1; 4431 data_dir = DMA_TO_DEVICE; 4432 } else if (atio->u.isp24.fcp_cmnd.rddata) 4433 data_dir = DMA_FROM_DEVICE; 4434 else if (atio->u.isp24.fcp_cmnd.wrdata) 4435 data_dir = DMA_TO_DEVICE; 4436 else 4437 data_dir = DMA_NONE; 4438 4439 fcp_task_attr = qlt_get_fcp_task_attr(vha, 4440 atio->u.isp24.fcp_cmnd.task_attr); 4441 data_length = get_datalen_for_atio(atio); 4442 4443 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cmd->cdb, data_length, 4444 fcp_task_attr, data_dir, bidi); 4445 if (ret != 0) 4446 goto out_term; 4447 /* 4448 * Drop extra session reference from qlt_handle_cmd_for_atio(). 4449 */ 4450 ha->tgt.tgt_ops->put_sess(sess); 4451 return; 4452 4453out_term: 4454 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 4455 /* 4456 * cmd has not sent to target yet, so pass NULL as the second 4457 * argument to qlt_send_term_exchange() and free the memory here. 4458 */ 4459 cmd->trc_flags |= TRC_DO_WORK_ERR; 4460 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 4461 qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1); 4462 4463 qlt_decr_num_pend_cmds(vha); 4464 if (unlikely(cmd->cdb != &cmd->atio.u.isp24.fcp_cmnd.cdb[0])) { 4465 kfree(cmd->cdb); 4466 cmd->cdb = &cmd->atio.u.isp24.fcp_cmnd.cdb[0]; 4467 cmd->cdb_len = 16; 4468 } 4469 cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); 4470 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 4471 4472 ha->tgt.tgt_ops->put_sess(sess); 4473} 4474 4475static void qlt_do_work(struct work_struct *work) 4476{ 4477 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 4478 scsi_qla_host_t *vha = cmd->vha; 4479 unsigned long flags; 4480 4481 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4482 list_del(&cmd->cmd_list); 4483 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4484 4485 __qlt_do_work(cmd); 4486} 4487 4488void qlt_clr_qp_table(struct scsi_qla_host *vha) 4489{ 4490 unsigned long flags; 4491 struct qla_hw_data *ha = vha->hw; 4492 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4493 void *node; 4494 u64 key = 0; 4495 4496 ql_log(ql_log_info, vha, 0x706c, 4497 "User update Number of Active Qpairs %d\n", 4498 ha->tgt.num_act_qpairs); 4499 4500 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 4501 4502 btree_for_each_safe64(&tgt->lun_qpair_map, key, node) 4503 btree_remove64(&tgt->lun_qpair_map, key); 4504 4505 ha->base_qpair->lun_cnt = 0; 4506 for (key = 0; key < ha->max_qpairs; key++) 4507 if (ha->queue_pair_map[key]) 4508 ha->queue_pair_map[key]->lun_cnt = 0; 4509 4510 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 4511} 4512 4513static void qlt_assign_qpair(struct scsi_qla_host *vha, 4514 struct qla_tgt_cmd *cmd) 4515{ 4516 struct qla_qpair *qpair, *qp; 4517 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4518 struct qla_qpair_hint *h; 4519 4520 if (vha->flags.qpairs_available) { 4521 h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); 4522 if (unlikely(!h)) { 4523 /* spread lun to qpair ratio evently */ 4524 int lcnt = 0, rc; 4525 struct scsi_qla_host *base_vha = 4526 pci_get_drvdata(vha->hw->pdev); 4527 4528 qpair = vha->hw->base_qpair; 4529 if (qpair->lun_cnt == 0) { 4530 qpair->lun_cnt++; 4531 h = qla_qpair_to_hint(tgt, qpair); 4532 BUG_ON(!h); 4533 rc = btree_insert64(&tgt->lun_qpair_map, 4534 cmd->unpacked_lun, h, GFP_ATOMIC); 4535 if (rc) { 4536 qpair->lun_cnt--; 4537 ql_log(ql_log_info, vha, 0xd037, 4538 "Unable to insert lun %llx into lun_qpair_map\n", 4539 cmd->unpacked_lun); 4540 } 4541 goto out; 4542 } else { 4543 lcnt = qpair->lun_cnt; 4544 } 4545 4546 h = NULL; 4547 list_for_each_entry(qp, &base_vha->qp_list, 4548 qp_list_elem) { 4549 if (qp->lun_cnt == 0) { 4550 qp->lun_cnt++; 4551 h = qla_qpair_to_hint(tgt, qp); 4552 BUG_ON(!h); 4553 rc = btree_insert64(&tgt->lun_qpair_map, 4554 cmd->unpacked_lun, h, GFP_ATOMIC); 4555 if (rc) { 4556 qp->lun_cnt--; 4557 ql_log(ql_log_info, vha, 0xd038, 4558 "Unable to insert lun %llx into lun_qpair_map\n", 4559 cmd->unpacked_lun); 4560 } 4561 qpair = qp; 4562 goto out; 4563 } else { 4564 if (qp->lun_cnt < lcnt) { 4565 lcnt = qp->lun_cnt; 4566 qpair = qp; 4567 continue; 4568 } 4569 } 4570 } 4571 BUG_ON(!qpair); 4572 qpair->lun_cnt++; 4573 h = qla_qpair_to_hint(tgt, qpair); 4574 BUG_ON(!h); 4575 rc = btree_insert64(&tgt->lun_qpair_map, 4576 cmd->unpacked_lun, h, GFP_ATOMIC); 4577 if (rc) { 4578 qpair->lun_cnt--; 4579 ql_log(ql_log_info, vha, 0xd039, 4580 "Unable to insert lun %llx into lun_qpair_map\n", 4581 cmd->unpacked_lun); 4582 } 4583 } 4584 } else { 4585 h = &tgt->qphints[0]; 4586 } 4587out: 4588 cmd->qpair = h->qpair; 4589 cmd->se_cmd.cpuid = h->cpuid; 4590} 4591 4592/* 4593 * Safely make a fixed-length copy of a variable-length atio by truncating the 4594 * CDB if necessary. 4595 */ 4596static void memcpy_atio(struct atio_from_isp *dst, 4597 const struct atio_from_isp *src) 4598{ 4599 int len; 4600 4601 memcpy(dst, src, sizeof(*dst)); 4602 4603 /* 4604 * If the CDB was truncated, prevent get_datalen_for_atio() from 4605 * accessing invalid memory. 4606 */ 4607 len = src->u.isp24.fcp_cmnd.add_cdb_len; 4608 if (unlikely(len != 0)) { 4609 dst->u.isp24.fcp_cmnd.add_cdb_len = 0; 4610 memcpy(&dst->u.isp24.fcp_cmnd.add_cdb[0], 4611 &src->u.isp24.fcp_cmnd.add_cdb[len * 4], 4612 4); 4613 } 4614} 4615 4616static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 4617 struct fc_port *sess, 4618 struct atio_from_isp *atio) 4619{ 4620 struct qla_tgt_cmd *cmd; 4621 int add_cdb_len; 4622 4623 cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); 4624 if (!cmd) 4625 return NULL; 4626 4627 cmd->cmd_type = TYPE_TGT_CMD; 4628 memcpy_atio(&cmd->atio, atio); 4629 INIT_LIST_HEAD(&cmd->sess_cmd_list); 4630 cmd->state = QLA_TGT_STATE_NEW; 4631 cmd->tgt = vha->vha_tgt.qla_tgt; 4632 qlt_incr_num_pend_cmds(vha); 4633 cmd->vha = vha; 4634 cmd->sess = sess; 4635 cmd->loop_id = sess->loop_id; 4636 cmd->conf_compl_supported = sess->conf_compl_supported; 4637 4638 cmd->trc_flags = 0; 4639 cmd->jiffies_at_alloc = get_jiffies_64(); 4640 4641 cmd->unpacked_lun = scsilun_to_int( 4642 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 4643 qlt_assign_qpair(vha, cmd); 4644 cmd->reset_count = vha->hw->base_qpair->chip_reset; 4645 cmd->vp_idx = vha->vp_idx; 4646 cmd->edif = sess->edif.enable; 4647 4648 cmd->cdb = &cmd->atio.u.isp24.fcp_cmnd.cdb[0]; 4649 cmd->cdb_len = 16; 4650 4651 /* 4652 * NOTE: memcpy_atio() set cmd->atio.u.isp24.fcp_cmnd.add_cdb_len to 0, 4653 * so use the original value here. 4654 */ 4655 add_cdb_len = atio->u.isp24.fcp_cmnd.add_cdb_len; 4656 if (unlikely(add_cdb_len != 0)) { 4657 int cdb_len = 16 + add_cdb_len * 4; 4658 u8 *cdb; 4659 4660 cdb = kmalloc(cdb_len, GFP_ATOMIC); 4661 if (unlikely(!cdb)) { 4662 vha->hw->tgt.tgt_ops->free_cmd(cmd); 4663 return NULL; 4664 } 4665 /* CAUTION: copy CDB from atio not cmd->atio */ 4666 memcpy(cdb, atio->u.isp24.fcp_cmnd.cdb, cdb_len); 4667 cmd->cdb = cdb; 4668 cmd->cdb_len = cdb_len; 4669 } 4670 4671 return cmd; 4672} 4673 4674/* ha->hardware_lock supposed to be held on entry */ 4675static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 4676 struct atio_from_isp *atio) 4677{ 4678 struct qla_hw_data *ha = vha->hw; 4679 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4680 struct fc_port *sess; 4681 struct qla_tgt_cmd *cmd; 4682 unsigned long flags; 4683 port_id_t id; 4684 4685 if (unlikely(tgt->tgt_stop)) { 4686 ql_dbg(ql_dbg_io, vha, 0x3061, 4687 "New command while device %p is shutting down\n", tgt); 4688 return -ENODEV; 4689 } 4690 4691 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 4692 if (IS_SW_RESV_ADDR(id)) 4693 return -EBUSY; 4694 4695 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 4696 if (unlikely(!sess)) 4697 return -EFAULT; 4698 4699 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4700 * session deletion, but it's still in sess_del_work wq */ 4701 if (sess->deleted) { 4702 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, 4703 "New command while old session %p is being deleted\n", 4704 sess); 4705 return -EFAULT; 4706 } 4707 4708 /* 4709 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4710 */ 4711 if (!kref_get_unless_zero(&sess->sess_kref)) { 4712 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 4713 "%s: kref_get fail, %8phC oxid %x \n", 4714 __func__, sess->port_name, 4715 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 4716 return -EFAULT; 4717 } 4718 4719 cmd = qlt_get_tag(vha, sess, atio); 4720 if (!cmd) { 4721 ql_dbg(ql_dbg_io, vha, 0x3062, 4722 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4723 ha->tgt.tgt_ops->put_sess(sess); 4724 return -EBUSY; 4725 } 4726 4727 cmd->cmd_in_wq = 1; 4728 cmd->trc_flags |= TRC_NEW_CMD; 4729 4730 spin_lock_irqsave(&vha->cmd_list_lock, flags); 4731 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4732 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 4733 4734 INIT_WORK(&cmd->work, qlt_do_work); 4735 if (vha->flags.qpairs_available) { 4736 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); 4737 } else if (ha->msix_count) { 4738 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4739 queue_work(qla_tgt_wq, &cmd->work); 4740 else 4741 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4742 &cmd->work); 4743 } else { 4744 queue_work(qla_tgt_wq, &cmd->work); 4745 } 4746 4747 return 0; 4748} 4749 4750/* ha->hardware_lock supposed to be held on entry */ 4751static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, 4752 int fn, void *iocb, int flags) 4753{ 4754 struct scsi_qla_host *vha = sess->vha; 4755 struct qla_hw_data *ha = vha->hw; 4756 struct qla_tgt_mgmt_cmd *mcmd; 4757 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4758 struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; 4759 4760 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4761 if (!mcmd) { 4762 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4763 "qla_target(%d): Allocation of management " 4764 "command failed, some commands and their data could " 4765 "leak\n", vha->vp_idx); 4766 return -ENOMEM; 4767 } 4768 memset(mcmd, 0, sizeof(*mcmd)); 4769 mcmd->sess = sess; 4770 4771 if (iocb) { 4772 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4773 sizeof(mcmd->orig_iocb.imm_ntfy)); 4774 } 4775 mcmd->tmr_func = fn; 4776 mcmd->flags = flags; 4777 mcmd->reset_count = ha->base_qpair->chip_reset; 4778 mcmd->qpair = h->qpair; 4779 mcmd->vha = vha; 4780 mcmd->se_cmd.cpuid = h->cpuid; 4781 mcmd->unpacked_lun = lun; 4782 4783 switch (fn) { 4784 case QLA_TGT_LUN_RESET: 4785 case QLA_TGT_CLEAR_TS: 4786 case QLA_TGT_ABORT_TS: 4787 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4788 fallthrough; 4789 case QLA_TGT_CLEAR_ACA: 4790 h = qlt_find_qphint(vha, mcmd->unpacked_lun); 4791 mcmd->qpair = h->qpair; 4792 mcmd->se_cmd.cpuid = h->cpuid; 4793 break; 4794 4795 case QLA_TGT_TARGET_RESET: 4796 case QLA_TGT_NEXUS_LOSS_SESS: 4797 case QLA_TGT_NEXUS_LOSS: 4798 case QLA_TGT_ABORT_ALL: 4799 default: 4800 /* no-op */ 4801 break; 4802 } 4803 4804 INIT_WORK(&mcmd->work, qlt_do_tmr_work); 4805 queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, 4806 &mcmd->work); 4807 4808 return 0; 4809} 4810 4811/* ha->hardware_lock supposed to be held on entry */ 4812static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4813{ 4814 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4815 struct qla_hw_data *ha = vha->hw; 4816 struct fc_port *sess; 4817 u64 unpacked_lun; 4818 int fn; 4819 unsigned long flags; 4820 4821 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4822 4823 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4824 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4825 a->u.isp24.fcp_hdr.s_id); 4826 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4827 4828 unpacked_lun = 4829 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4830 4831 if (sess == NULL || sess->deleted) 4832 return -EFAULT; 4833 4834 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4835} 4836 4837/* ha->hardware_lock supposed to be held on entry */ 4838static int __qlt_abort_task(struct scsi_qla_host *vha, 4839 struct imm_ntfy_from_isp *iocb, struct fc_port *sess) 4840{ 4841 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4842 struct qla_hw_data *ha = vha->hw; 4843 struct qla_tgt_mgmt_cmd *mcmd; 4844 u64 unpacked_lun; 4845 int rc; 4846 4847 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4848 if (mcmd == NULL) { 4849 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4850 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4851 vha->vp_idx, __func__); 4852 return -ENOMEM; 4853 } 4854 memset(mcmd, 0, sizeof(*mcmd)); 4855 4856 mcmd->sess = sess; 4857 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4858 sizeof(mcmd->orig_iocb.imm_ntfy)); 4859 4860 unpacked_lun = 4861 scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); 4862 mcmd->reset_count = ha->base_qpair->chip_reset; 4863 mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; 4864 mcmd->qpair = ha->base_qpair; 4865 4866 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, 4867 le16_to_cpu(iocb->u.isp2x.seq_id)); 4868 if (rc != 0) { 4869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4870 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4871 vha->vp_idx, rc); 4872 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4873 return -EFAULT; 4874 } 4875 4876 return 0; 4877} 4878 4879/* ha->hardware_lock supposed to be held on entry */ 4880static int qlt_abort_task(struct scsi_qla_host *vha, 4881 struct imm_ntfy_from_isp *iocb) 4882{ 4883 struct qla_hw_data *ha = vha->hw; 4884 struct fc_port *sess; 4885 int loop_id; 4886 unsigned long flags; 4887 4888 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4889 4890 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4891 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4892 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4893 4894 if (sess == NULL) { 4895 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4896 "qla_target(%d): task abort for unexisting " 4897 "session\n", vha->vp_idx); 4898 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4899 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4900 } 4901 4902 return __qlt_abort_task(vha, iocb, sess); 4903} 4904 4905void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4906{ 4907 if (rc != MBS_COMMAND_COMPLETE) { 4908 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4909 "%s: se_sess %p / sess %p from" 4910 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4911 " LOGO failed: %#x\n", 4912 __func__, 4913 fcport->se_sess, 4914 fcport, 4915 fcport->port_name, fcport->loop_id, 4916 fcport->d_id.b.domain, fcport->d_id.b.area, 4917 fcport->d_id.b.al_pa, rc); 4918 } 4919 4920 fcport->logout_completed = 1; 4921} 4922 4923/* 4924* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4925* 4926* Schedules sessions with matching port_id/loop_id but different wwn for 4927* deletion. Returns existing session with matching wwn if present. 4928* Null otherwise. 4929*/ 4930struct fc_port * 4931qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, 4932 port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) 4933{ 4934 struct fc_port *sess = NULL, *other_sess; 4935 uint64_t other_wwn; 4936 4937 *conflict_sess = NULL; 4938 4939 list_for_each_entry(other_sess, &vha->vp_fcports, list) { 4940 4941 other_wwn = wwn_to_u64(other_sess->port_name); 4942 4943 if (wwn == other_wwn) { 4944 WARN_ON(sess); 4945 sess = other_sess; 4946 continue; 4947 } 4948 4949 /* find other sess with nport_id collision */ 4950 if (port_id.b24 == other_sess->d_id.b24) { 4951 if (loop_id != other_sess->loop_id) { 4952 ql_dbg(ql_dbg_disc, vha, 0x1000c, 4953 "Invalidating sess %p loop_id %d wwn %llx.\n", 4954 other_sess, other_sess->loop_id, other_wwn); 4955 4956 /* 4957 * logout_on_delete is set by default, but another 4958 * session that has the same s_id/loop_id combo 4959 * might have cleared it when requested this session 4960 * deletion, so don't touch it 4961 */ 4962 qlt_schedule_sess_for_deletion(other_sess); 4963 } else { 4964 /* 4965 * Another wwn used to have our s_id/loop_id 4966 * kill the session, but don't free the loop_id 4967 */ 4968 ql_dbg(ql_dbg_disc, vha, 0xf01b, 4969 "Invalidating sess %p loop_id %d wwn %llx.\n", 4970 other_sess, other_sess->loop_id, other_wwn); 4971 4972 other_sess->keep_nport_handle = 1; 4973 if (other_sess->disc_state != DSC_DELETED) 4974 *conflict_sess = other_sess; 4975 qlt_schedule_sess_for_deletion(other_sess); 4976 } 4977 continue; 4978 } 4979 4980 /* find other sess with nport handle collision */ 4981 if ((loop_id == other_sess->loop_id) && 4982 (loop_id != FC_NO_LOOP_ID)) { 4983 ql_dbg(ql_dbg_disc, vha, 0x1000d, 4984 "Invalidating sess %p loop_id %d wwn %llx.\n", 4985 other_sess, other_sess->loop_id, other_wwn); 4986 4987 /* Same loop_id but different s_id 4988 * Ok to kill and logout */ 4989 qlt_schedule_sess_for_deletion(other_sess); 4990 } 4991 } 4992 4993 return sess; 4994} 4995 4996/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4997static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4998{ 4999 struct qla_tgt_sess_op *op; 5000 struct qla_tgt_cmd *cmd; 5001 uint32_t key; 5002 int count = 0; 5003 unsigned long flags; 5004 5005 key = (((u32)s_id->b.domain << 16) | 5006 ((u32)s_id->b.area << 8) | 5007 ((u32)s_id->b.al_pa)); 5008 5009 spin_lock_irqsave(&vha->cmd_list_lock, flags); 5010 list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { 5011 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 5012 5013 if (op_key == key) { 5014 op->aborted = true; 5015 count++; 5016 } 5017 } 5018 5019 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 5020 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 5021 5022 if (cmd_key == key) { 5023 cmd->aborted = 1; 5024 count++; 5025 } 5026 } 5027 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 5028 5029 return count; 5030} 5031 5032static int qlt_handle_login(struct scsi_qla_host *vha, 5033 struct imm_ntfy_from_isp *iocb) 5034{ 5035 struct fc_port *sess = NULL, *conflict_sess = NULL; 5036 uint64_t wwn; 5037 port_id_t port_id; 5038 uint16_t loop_id, wd3_lo; 5039 int res = 0; 5040 struct qlt_plogi_ack_t *pla; 5041 unsigned long flags; 5042 5043 lockdep_assert_held(&vha->hw->hardware_lock); 5044 5045 wwn = wwn_to_u64(iocb->u.isp24.port_name); 5046 5047 port_id.b.domain = iocb->u.isp24.port_id[2]; 5048 port_id.b.area = iocb->u.isp24.port_id[1]; 5049 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 5050 port_id.b.rsvd_1 = 0; 5051 5052 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 5053 5054 /* Mark all stale commands sitting in qla_tgt_wq for deletion */ 5055 abort_cmds_for_s_id(vha, &port_id); 5056 5057 if (wwn) { 5058 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 5059 sess = qlt_find_sess_invalidate_other(vha, wwn, 5060 port_id, loop_id, &conflict_sess); 5061 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 5062 } else { 5063 ql_dbg(ql_dbg_disc, vha, 0xffff, 5064 "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", 5065 __func__, __LINE__, loop_id, port_id.b24); 5066 qlt_send_term_imm_notif(vha, iocb, 1); 5067 goto out; 5068 } 5069 5070 if (IS_SW_RESV_ADDR(port_id)) { 5071 res = 1; 5072 goto out; 5073 } 5074 5075 if (vha->hw->flags.edif_enabled && 5076 !(vha->e_dbell.db_flags & EDB_ACTIVE) && 5077 iocb->u.isp24.status_subcode == ELS_PLOGI && 5078 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 5079 ql_dbg(ql_dbg_disc, vha, 0xffff, 5080 "%s %d Term INOT due to app not available lid=%d, NportID %06X ", 5081 __func__, __LINE__, loop_id, port_id.b24); 5082 qlt_send_term_imm_notif(vha, iocb, 1); 5083 goto out; 5084 } 5085 5086 if (vha->hw->flags.edif_enabled) { 5087 if (DBELL_INACTIVE(vha)) { 5088 ql_dbg(ql_dbg_disc, vha, 0xffff, 5089 "%s %d Term INOT due to app not started lid=%d, NportID %06X ", 5090 __func__, __LINE__, loop_id, port_id.b24); 5091 qlt_send_term_imm_notif(vha, iocb, 1); 5092 goto out; 5093 } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && 5094 !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { 5095 ql_dbg(ql_dbg_disc, vha, 0xffff, 5096 "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", 5097 __func__, __LINE__, loop_id, port_id.b24); 5098 qlt_send_term_imm_notif(vha, iocb, 1); 5099 goto out; 5100 } 5101 } 5102 5103 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 5104 if (!pla) { 5105 ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, 5106 "%s %d %8phC Term INOT due to mem alloc fail", 5107 __func__, __LINE__, 5108 iocb->u.isp24.port_name); 5109 qlt_send_term_imm_notif(vha, iocb, 1); 5110 goto out; 5111 } 5112 5113 if (conflict_sess) { 5114 conflict_sess->login_gen++; 5115 qlt_plogi_ack_link(vha, pla, conflict_sess, 5116 QLT_PLOGI_LINK_CONFLICT); 5117 } 5118 5119 if (!sess) { 5120 pla->ref_count++; 5121 ql_dbg(ql_dbg_disc, vha, 0xffff, 5122 "%s %d %8phC post new sess\n", 5123 __func__, __LINE__, iocb->u.isp24.port_name); 5124 if (iocb->u.isp24.status_subcode == ELS_PLOGI) 5125 qla24xx_post_newsess_work(vha, &port_id, 5126 iocb->u.isp24.port_name, 5127 iocb->u.isp24.u.plogi.node_name, 5128 pla, 0); 5129 else 5130 qla24xx_post_newsess_work(vha, &port_id, 5131 iocb->u.isp24.port_name, NULL, 5132 pla, 0); 5133 5134 goto out; 5135 } 5136 5137 if (sess->disc_state == DSC_UPD_FCPORT) { 5138 u16 sec; 5139 5140 /* 5141 * Remote port registration is still going on from 5142 * previous login. Allow it to finish before we 5143 * accept the new login. 5144 */ 5145 sess->next_disc_state = DSC_DELETE_PEND; 5146 sec = jiffies_to_msecs(jiffies - 5147 sess->jiffies_at_registration) / 1000; 5148 if (sess->sec_since_registration < sec && sec && 5149 !(sec % 5)) { 5150 sess->sec_since_registration = sec; 5151 ql_dbg(ql_dbg_disc, vha, 0xffff, 5152 "%s %8phC - Slow Rport registration (%d Sec)\n", 5153 __func__, sess->port_name, sec); 5154 } 5155 5156 if (!conflict_sess) { 5157 list_del(&pla->list); 5158 kmem_cache_free(qla_tgt_plogi_cachep, pla); 5159 } 5160 5161 qlt_send_term_imm_notif(vha, iocb, 1); 5162 goto out; 5163 } 5164 5165 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 5166 sess->d_id = port_id; 5167 sess->login_gen++; 5168 sess->loop_id = loop_id; 5169 5170 if (iocb->u.isp24.status_subcode == ELS_PLOGI) { 5171 /* remote port has assigned Port ID */ 5172 if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) 5173 vha->d_id = sess->d_id; 5174 5175 ql_dbg(ql_dbg_disc, vha, 0xffff, 5176 "%s %8phC - send port online\n", 5177 __func__, sess->port_name); 5178 5179 qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 5180 sess->d_id.b24); 5181 } 5182 5183 if (iocb->u.isp24.status_subcode == ELS_PRLI) { 5184 sess->fw_login_state = DSC_LS_PRLI_PEND; 5185 sess->local = 0; 5186 sess->loop_id = loop_id; 5187 sess->d_id = port_id; 5188 sess->fw_login_state = DSC_LS_PRLI_PEND; 5189 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 5190 5191 if (wd3_lo & BIT_7) 5192 sess->conf_compl_supported = 1; 5193 5194 if ((wd3_lo & BIT_4) == 0) 5195 sess->port_type = FCT_INITIATOR; 5196 else 5197 sess->port_type = FCT_TARGET; 5198 5199 } else 5200 sess->fw_login_state = DSC_LS_PLOGI_PEND; 5201 5202 5203 ql_dbg(ql_dbg_disc, vha, 0x20f9, 5204 "%s %d %8phC DS %d\n", 5205 __func__, __LINE__, sess->port_name, sess->disc_state); 5206 5207 switch (sess->disc_state) { 5208 case DSC_DELETED: 5209 case DSC_LOGIN_PEND: 5210 qlt_plogi_ack_unref(vha, pla); 5211 break; 5212 5213 default: 5214 /* 5215 * Under normal circumstances we want to release nport handle 5216 * during LOGO process to avoid nport handle leaks inside FW. 5217 * The exception is when LOGO is done while another PLOGI with 5218 * the same nport handle is waiting as might be the case here. 5219 * Note: there is always a possibily of a race where session 5220 * deletion has already started for other reasons (e.g. ACL 5221 * removal) and now PLOGI arrives: 5222 * 1. if PLOGI arrived in FW after nport handle has been freed, 5223 * FW must have assigned this PLOGI a new/same handle and we 5224 * can proceed ACK'ing it as usual when session deletion 5225 * completes. 5226 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 5227 * bit reached it, the handle has now been released. We'll 5228 * get an error when we ACK this PLOGI. Nothing will be sent 5229 * back to initiator. Initiator should eventually retry 5230 * PLOGI and situation will correct itself. 5231 */ 5232 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 5233 (sess->d_id.b24 == port_id.b24)); 5234 5235 ql_dbg(ql_dbg_disc, vha, 0x20f9, 5236 "%s %d %8phC post del sess\n", 5237 __func__, __LINE__, sess->port_name); 5238 5239 5240 qlt_schedule_sess_for_deletion(sess); 5241 break; 5242 } 5243out: 5244 return res; 5245} 5246 5247/* 5248 * Return true if the HBA firmware version is known to have bugs that 5249 * prevent Sequence Level Error Recovery (SLER) / Sequence Retransmission 5250 * Request (SRR) from working. 5251 * 5252 * Some bad versions are based on testing and some are based on "Marvell Fibre 5253 * Channel Firmware Release Notes". 5254 */ 5255static bool qlt_has_sler_fw_bug(struct qla_hw_data *ha) 5256{ 5257 bool has_sler_fw_bug = false; 5258 5259 if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 5260 /* 5261 * In the fw release notes: 5262 * ER147301 was added to v9.05.00 causing SLER regressions 5263 * FCD-259 was fixed in v9.08.00 5264 * FCD-371 was fixed in v9.08.00 5265 * FCD-1183 was fixed in v9.09.00 5266 * 5267 * QLE2694L (ISP2071) known bad firmware (tested): 5268 * 9.06.02 5269 * 9.07.00 5270 * 9.08.02 5271 * SRRs trigger hundreds of bogus entries in the response 5272 * queue and various other problems. 5273 * 5274 * QLE2694L known good firmware (tested): 5275 * 8.08.05 5276 * 9.09.00 5277 * 5278 * Suspected bad firmware (not confirmed by testing): 5279 * v9.05.xx 5280 * 5281 * unknown firmware: 5282 * 9.00.00 - 9.04.xx 5283 */ 5284 if (ha->fw_major_version == 9 && 5285 ha->fw_minor_version >= 5 && 5286 ha->fw_minor_version <= 8) 5287 has_sler_fw_bug = true; 5288 } 5289 5290 return has_sler_fw_bug; 5291} 5292 5293/* 5294 * Return true and print a message if the HA has been reset since the SRR 5295 * immediate notify was received; else return false. 5296 */ 5297static bool qlt_srr_is_chip_reset(struct scsi_qla_host *vha, 5298 struct qla_qpair *qpair, struct qla_tgt_srr *srr) 5299{ 5300 if (!vha->flags.online || 5301 !qpair->fw_started || 5302 srr->reset_count != qpair->chip_reset) { 5303 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1100d, 5304 "qla_target(%d): chip reset; discarding IMM SRR\n", 5305 vha->vp_idx); 5306 return true; 5307 } 5308 return false; 5309} 5310 5311/* Find and return the command associated with a SRR immediate notify. */ 5312static struct qla_tgt_cmd *qlt_srr_to_cmd(struct scsi_qla_host *vha, 5313 const struct imm_ntfy_from_isp *iocb) 5314{ 5315 struct qla_hw_data *ha = vha->hw; 5316 struct fc_port *sess; 5317 struct qla_tgt_cmd *cmd; 5318 uint32_t tag = le32_to_cpu(iocb->u.isp24.exchange_address); 5319 uint16_t loop_id; 5320 be_id_t s_id; 5321 unsigned long flags; 5322 5323 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 5324 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11009, 5325 "qla_target(%d): IMM SRR with unknown exchange address; reject SRR\n", 5326 vha->vp_idx); 5327 return NULL; 5328 } 5329 5330 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 5331 5332 s_id.domain = iocb->u.isp24.port_id[2]; 5333 s_id.area = iocb->u.isp24.port_id[1]; 5334 s_id.al_pa = iocb->u.isp24.port_id[0]; 5335 5336 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5337 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 5338 if (!sess) 5339 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 5340 if (!sess || sess->deleted) { 5341 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1100a, 5342 "qla_target(%d): could not find session for IMM SRR; reject SRR\n", 5343 vha->vp_idx); 5344 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5345 return NULL; 5346 } 5347 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5348 5349 cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, tag); 5350 if (!cmd) { 5351 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1100b, 5352 "qla_target(%d): could not find cmd for IMM SRR; reject SRR\n", 5353 vha->vp_idx); 5354 } else { 5355 u16 srr_ox_id = le16_to_cpu(iocb->u.isp24.srr_ox_id); 5356 u16 cmd_ox_id = be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id); 5357 5358 if (srr_ox_id != cmd_ox_id) { 5359 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1100c, 5360 "qla_target(%d): tag %lld: IMM SRR: srr_ox_id[%04x] != cmd_ox_id[%04x]; reject SRR\n", 5361 vha->vp_idx, cmd->se_cmd.tag, 5362 srr_ox_id, cmd_ox_id); 5363 cmd = NULL; 5364 } 5365 } 5366 5367 return cmd; 5368} 5369 5370/* 5371 * Handle an immediate notify SRR (Sequence Retransmission Request) message from 5372 * the hardware. The hardware will also send a CTIO with CTIO_SRR_RECEIVED status 5373 * for the affected command. 5374 * 5375 * This may be called a second time for the same immediate notify SRR if 5376 * CTIO_SRR_RECEIVED is never received and qlt_srr_abort() is called. 5377 * 5378 * Process context, no locks 5379 */ 5380static void qlt_handle_srr_imm(struct scsi_qla_host *vha, 5381 struct qla_tgt_srr *srr) 5382{ 5383 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5384 struct qla_hw_data *ha = vha->hw; 5385 struct qla_qpair *qpair; 5386 struct qla_tgt_cmd *cmd; 5387 uint8_t srr_explain = NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL; 5388 5389 /* handle qlt_srr_abort() */ 5390 if (srr->aborted) { 5391 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11004, 5392 "qla_target(%d): IMM SRR: terminating SRR for aborted cmd\n", 5393 vha->vp_idx); 5394 spin_lock_irq(&ha->hardware_lock); 5395 if (!qlt_srr_is_chip_reset(vha, ha->base_qpair, srr)) 5396 qlt_send_term_imm_notif(vha, &srr->imm_ntfy, 1); 5397 spin_unlock_irq(&ha->hardware_lock); 5398 kfree(srr); 5399 return; 5400 } 5401 if (srr->reject) { 5402 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11005, 5403 "qla_target(%d): IMM SRR: rejecting SRR for unknown cmd\n", 5404 vha->vp_idx); 5405 goto out_reject; 5406 } 5407 5408 /* Find the command associated with the SRR. */ 5409 cmd = qlt_srr_to_cmd(vha, &srr->imm_ntfy); 5410 if (cmd == NULL) { 5411 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11005, 5412 "qla_target(%d): IMM SRR: rejecting SRR for unknown cmd\n", 5413 vha->vp_idx); 5414 srr_explain = NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_INVALID_OX_ID_RX_ID; 5415 goto out_reject; 5416 } 5417 5418 if (ha->tgt.tgt_ops->get_cmd_ref(cmd)) { 5419 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11038, 5420 "qla_target(%d): IMM SRR: unable to get cmd ref; rejecting SRR\n", 5421 vha->vp_idx); 5422 cmd = NULL; 5423 goto out_reject; 5424 } 5425 5426 qpair = cmd->qpair; 5427 5428 spin_lock_irq(qpair->qp_lock_ptr); 5429 5430 if (cmd->reset_count != srr->reset_count) { 5431 /* force a miscompare */ 5432 srr->reset_count = qpair->chip_reset ^ 1; 5433 } 5434 if (qlt_srr_is_chip_reset(vha, qpair, srr)) { 5435 spin_unlock_irq(qpair->qp_lock_ptr); 5436 ha->tgt.tgt_ops->put_cmd_ref(cmd); 5437 kfree(srr); 5438 return; 5439 } 5440 5441 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11001, 5442 "qla_target(%d): tag %lld, op %x: received IMM SRR\n", 5443 vha->vp_idx, cmd->se_cmd.tag, cmd->cdb ? cmd->cdb[0] : 0); 5444 5445 cmd->trc_flags |= TRC_SRR_IMM; 5446 5447 if (cmd->srr != NULL) { 5448 if (cmd->srr->imm_ntfy_recvd) { 5449 /* 5450 * Received another immediate notify SRR message for 5451 * this command before the previous one could be processed 5452 * (not expected to happen). 5453 */ 5454 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11006, 5455 "qla_target(%d): tag %lld: received multiple IMM SRR; reject SRR\n", 5456 vha->vp_idx, cmd->se_cmd.tag); 5457 spin_unlock_irq(qpair->qp_lock_ptr); 5458 ha->tgt.tgt_ops->put_cmd_ref(cmd); 5459 goto out_reject; 5460 } 5461 5462 /* qlt_prepare_srr_ctio() was called first. */ 5463 WARN_ON(!cmd->srr->ctio_recvd); 5464 5465 /* 5466 * The immediate notify and CTIO handlers both allocated 5467 * separate srr structs; combine them. 5468 */ 5469 memcpy(&cmd->srr->imm_ntfy, &srr->imm_ntfy, 5470 sizeof(srr->imm_ntfy)); 5471 kfree(srr); 5472 srr = cmd->srr; 5473 srr->imm_ntfy_recvd = true; 5474 5475 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11002, 5476 "qla_target(%d): tag %lld: schedule SRR work\n", 5477 vha->vp_idx, cmd->se_cmd.tag); 5478 5479 /* Schedule the srr for processing in qlt_handle_srr(). */ 5480 spin_lock(&tgt->srr_lock); 5481 list_add_tail(&srr->srr_list_entry, &tgt->srr_list); 5482 /* 5483 * Already running the work function; no need to schedule 5484 * tgt->srr_work. 5485 */ 5486 spin_unlock(&tgt->srr_lock); 5487 spin_unlock_irq(qpair->qp_lock_ptr); 5488 /* return with cmd refcount incremented */ 5489 return; 5490 } 5491 5492 /* The CTIO SRR for this command has not yet been received. */ 5493 5494 if (cmd->sent_term_exchg) { 5495 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11007, 5496 "qla_target(%d): tag %lld: IMM SRR: cmd already aborted\n", 5497 vha->vp_idx, cmd->se_cmd.tag); 5498 spin_unlock_irq(qpair->qp_lock_ptr); 5499 spin_lock_irq(&ha->hardware_lock); 5500 if (!qlt_srr_is_chip_reset(vha, ha->base_qpair, srr)) 5501 qlt_send_term_imm_notif(vha, &srr->imm_ntfy, 1); 5502 spin_unlock_irq(&ha->hardware_lock); 5503 kfree(srr); 5504 ha->tgt.tgt_ops->put_cmd_ref(cmd); 5505 return; 5506 } 5507 5508 /* If not expecting a CTIO, then reject IMM SRR. */ 5509 if (!cmd->cmd_sent_to_fw) { 5510 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11008, 5511 "qla_target(%d): tag %lld: IMM SRR but !cmd_sent_to_fw (state %d); reject SRR\n", 5512 vha->vp_idx, cmd->se_cmd.tag, cmd->state); 5513 spin_unlock_irq(qpair->qp_lock_ptr); 5514 ha->tgt.tgt_ops->put_cmd_ref(cmd); 5515 goto out_reject; 5516 } 5517 5518 /* Expect qlt_prepare_srr_ctio() to be called. */ 5519 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11003, 5520 "qla_target(%d): tag %lld: wait for CTIO SRR (state %d)\n", 5521 vha->vp_idx, cmd->se_cmd.tag, cmd->state); 5522 srr->cmd = cmd; 5523 cmd->srr = srr; 5524 5525 spin_unlock_irq(qpair->qp_lock_ptr); 5526 5527 ha->tgt.tgt_ops->put_cmd_ref(cmd); 5528 return; 5529 5530out_reject: 5531 qpair = vha->hw->base_qpair; 5532 spin_lock_irq(qpair->qp_lock_ptr); 5533 if (!qlt_srr_is_chip_reset(vha, qpair, srr)) 5534 qlt_send_notify_ack(qpair, &srr->imm_ntfy, 0, 0, 0, 5535 NOTIFY_ACK_SRR_FLAGS_REJECT, 5536 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 5537 srr_explain); 5538 spin_unlock_irq(qpair->qp_lock_ptr); 5539 kfree(srr); 5540} 5541 5542/* 5543 * Handle an immediate notify SRR (Sequence Retransmission Request) message from 5544 * the hardware. The hardware will also send a CTIO with CTIO_SRR_RECEIVED status 5545 * for the affected command. 5546 * 5547 * ha->hardware_lock supposed to be held on entry 5548 */ 5549static void qlt_prepare_srr_imm(struct scsi_qla_host *vha, 5550 struct imm_ntfy_from_isp *iocb) 5551{ 5552 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5553 struct qla_tgt_srr *srr; 5554 5555 ql_log(ql_log_warn, vha, 0x11000, "qla_target(%d): received IMM SRR\n", 5556 vha->vp_idx); 5557 5558 /* 5559 * Need cmd->qpair->qp_lock_ptr, but have ha->hardware_lock. Defer 5560 * processing to a workqueue so that the right lock can be acquired 5561 * safely. 5562 */ 5563 5564 srr = kzalloc(sizeof(*srr), GFP_ATOMIC); 5565 if (!srr) 5566 goto out_reject; 5567 5568 memcpy(&srr->imm_ntfy, iocb, sizeof(srr->imm_ntfy)); 5569 srr->imm_ntfy_recvd = true; 5570 srr->reset_count = vha->hw->base_qpair->chip_reset; 5571 spin_lock(&tgt->srr_lock); 5572 list_add_tail(&srr->srr_list_entry, &tgt->srr_list); 5573 queue_work(qla_tgt_wq, &tgt->srr_work); 5574 spin_unlock(&tgt->srr_lock); 5575 /* resume processing in qlt_handle_srr_imm() */ 5576 return; 5577 5578out_reject: 5579 qlt_send_notify_ack(vha->hw->base_qpair, iocb, 0, 0, 0, 5580 NOTIFY_ACK_SRR_FLAGS_REJECT, 5581 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 5582 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 5583} 5584 5585/* 5586 * If possible, undo the effect of qlt_set_data_offset() and restore the cmd 5587 * data buffer back to its full size. 5588 */ 5589static int qlt_restore_orig_sg(struct qla_tgt_cmd *cmd) 5590{ 5591 struct scsi_qla_host *vha = cmd->vha; 5592 struct se_cmd *se_cmd = &cmd->se_cmd; 5593 5594 WARN_ON(cmd->sg_mapped); 5595 5596 if (cmd->offset == 0) { 5597 /* qlt_set_data_offset() has not been called. */ 5598 return 0; 5599 } 5600 5601 if (se_cmd->t_data_sg == NULL || 5602 se_cmd->t_data_nents == 0 || 5603 se_cmd->data_length == 0) { 5604 /* The original scatterlist is not available. */ 5605 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1102c, 5606 "qla_target(%d): tag %lld: cannot restore original cmd buffer; keep modified buffer at offset %d\n", 5607 vha->vp_idx, cmd->se_cmd.tag, cmd->offset); 5608 return -ENOENT; 5609 } 5610 5611 /* Restore the original scatterlist. */ 5612 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1102d, 5613 "qla_target(%d): tag %lld: restore original cmd buffer: offset %d -> 0\n", 5614 vha->vp_idx, cmd->se_cmd.tag, cmd->offset); 5615 if (cmd->free_sg) { 5616 cmd->free_sg = 0; 5617 qlt_free_sg(cmd); 5618 } 5619 cmd->offset = 0; 5620 cmd->sg = se_cmd->t_data_sg; 5621 cmd->sg_cnt = se_cmd->t_data_nents; 5622 cmd->bufflen = se_cmd->data_length; 5623 return 0; 5624} 5625 5626/* 5627 * Adjust the data buffer of the given command to skip over offset bytes from 5628 * the beginning while also reducing the length by offset bytes. 5629 * 5630 * This may be called multiple times for a single command if there are multiple 5631 * SRRs, which each call reducing the buffer size further relative to the 5632 * previous call. Note that the buffer may be reset back to its original size 5633 * by calling qlt_restore_orig_sg(). 5634 */ 5635static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset) 5636{ 5637 struct scsi_qla_host *vha = cmd->vha; 5638 struct scatterlist *sg_srr_start = NULL, *sg; 5639 uint32_t first_offset = offset; 5640 int sg_srr_cnt, i; 5641 int bufflen = 0; 5642 5643 WARN_ON(cmd->sg_mapped); 5644 5645 ql_dbg(ql_dbg_tgt, vha, 0x11020, 5646 "qla_target(%d): tag %lld: %s: sg %p sg_cnt %d dir %d cmd->offset %d cmd->bufflen %d add offset %u\n", 5647 vha->vp_idx, cmd->se_cmd.tag, __func__, cmd->sg, 5648 cmd->sg_cnt, cmd->dma_data_direction, cmd->offset, cmd->bufflen, 5649 offset); 5650 5651 if (cmd->se_cmd.prot_op != TARGET_PROT_NORMAL) { 5652 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11021, 5653 "qla_target(%d): tag %lld: %s: SRR with protection information at nonzero offset not implemented\n", 5654 vha->vp_idx, cmd->se_cmd.tag, __func__); 5655 return -EINVAL; 5656 } 5657 5658 if (!cmd->sg || !cmd->sg_cnt) { 5659 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11022, 5660 "qla_target(%d): tag %lld: %s: Missing cmd->sg or zero cmd->sg_cnt\n", 5661 vha->vp_idx, cmd->se_cmd.tag, __func__); 5662 return -EINVAL; 5663 } 5664 5665 /* 5666 * Walk the current cmd->sg list until we locate the new sg_srr_start 5667 */ 5668 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) { 5669 ql_dbg(ql_dbg_tgt, vha, 0x11023, 5670 "sg[%d]: %p page: %p, length: %d, offset: %d\n", 5671 i, sg, sg_page(sg), sg->length, sg->offset); 5672 5673 if (first_offset < sg->length) { 5674 sg_srr_start = sg; 5675 break; 5676 } 5677 first_offset -= sg->length; 5678 } 5679 5680 if (!sg_srr_start) { 5681 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11024, 5682 "qla_target(%d): tag %lld: Unable to locate sg_srr_start for offset: %u\n", 5683 vha->vp_idx, cmd->se_cmd.tag, offset); 5684 return -EINVAL; 5685 } 5686 5687 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11025, 5688 "qla_target(%d): tag %lld: prepare SRR sgl at sg index %d of %d byte offset %u of %u\n", 5689 vha->vp_idx, cmd->se_cmd.tag, i, cmd->sg_cnt, 5690 first_offset, sg_srr_start->length); 5691 5692 sg_srr_cnt = cmd->sg_cnt - i; 5693 5694 if (first_offset == 0 && !cmd->free_sg) { 5695 /* 5696 * The offset points to the beginning of a scatterlist element. 5697 * In this case there is no need to modify the first scatterlist 5698 * element, so we can just point directly inside the original 5699 * unmodified scatterlist. 5700 */ 5701 ql_dbg(ql_dbg_tgt, vha, 0x11026, "point directly to old sgl\n"); 5702 cmd->sg = sg_srr_start; 5703 } else { 5704 /* 5705 * Allocate at most 2 new scatterlist elements to reduce memory 5706 * requirements. 5707 */ 5708 int n_alloc_sg = min(sg_srr_cnt, 2); 5709 struct scatterlist *sg_srr = 5710 kmalloc_array(n_alloc_sg, sizeof(*sg_srr), GFP_ATOMIC); 5711 if (!sg_srr) { 5712 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11027, 5713 "qla_target(%d): tag %lld: Unable to allocate SRR scatterlist\n", 5714 vha->vp_idx, cmd->se_cmd.tag); 5715 return -ENOMEM; 5716 } 5717 sg_init_table(sg_srr, n_alloc_sg); 5718 5719 /* Init the first sg element to skip over the unneeded data. */ 5720 sg_set_page(&sg_srr[0], sg_page(sg_srr_start), 5721 sg_srr_start->length - first_offset, 5722 sg_srr_start->offset + first_offset); 5723 if (sg_srr_cnt == 1) { 5724 ql_dbg(ql_dbg_tgt, vha, 0x11028, 5725 "single-element array\n"); 5726 } else if (sg_srr_cnt == 2) { 5727 /* Only two elements; copy the last element. */ 5728 ql_dbg(ql_dbg_tgt, vha, 0x11029, 5729 "complete two-element array\n"); 5730 sg = sg_next(sg_srr_start); 5731 sg_set_page(&sg_srr[1], sg_page(sg), sg->length, 5732 sg->offset); 5733 } else { 5734 /* 5735 * Three or more elements; chain our newly-allocated 5736 * 2-entry array to the rest of the original 5737 * scatterlist at the splice point. 5738 */ 5739 ql_dbg(ql_dbg_tgt, vha, 0x1102a, 5740 "chain to original scatterlist\n"); 5741 sg = sg_next(sg_srr_start); 5742 sg_chain(sg_srr, 2, sg); 5743 } 5744 5745 /* 5746 * If the previous scatterlist was allocated here on a previous 5747 * call, then it should be safe to free now. 5748 */ 5749 if (cmd->free_sg) 5750 qlt_free_sg(cmd); 5751 cmd->sg = sg_srr; 5752 cmd->free_sg = 1; 5753 } 5754 5755 /* Note that sg_cnt doesn't include any extra chain elements. */ 5756 cmd->sg_cnt = sg_srr_cnt; 5757 cmd->offset += offset; 5758 cmd->bufflen -= offset; 5759 5760 /* Check the scatterlist length for consistency. */ 5761 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) { 5762 bufflen += sg->length; 5763 } 5764 if (bufflen != cmd->bufflen) { 5765 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1102b, 5766 "qla_target(%d): tag %lld: %s: bad sgl length: expected %d got %d\n", 5767 vha->vp_idx, cmd->se_cmd.tag, __func__, cmd->bufflen, bufflen); 5768 return -EINVAL; 5769 } 5770 5771 return 0; 5772} 5773 5774/* 5775 * Given the "SRR relative offset" (offset of data to retry), determine what 5776 * needs to be retransmitted (data and/or status) and return the mask in 5777 * xmit_type. If retrying data, adjust the command buffer to point to only the 5778 * data that need to be retried, skipping over the data that don't need to be 5779 * retried. 5780 * 5781 * Returns 0 for success or a negative error number. 5782 */ 5783static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd, 5784 uint32_t srr_rel_offs, int *xmit_type) 5785{ 5786 struct scsi_qla_host *vha = cmd->vha; 5787 int res = 0, rel_offs; 5788 5789 if (srr_rel_offs < cmd->offset || 5790 srr_rel_offs > cmd->offset + cmd->bufflen) { 5791 *xmit_type = 0; 5792 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1101e, 5793 "qla_target(%d): tag %lld: srr_rel_offs %u outside accepted range %u - %u\n", 5794 vha->vp_idx, cmd->se_cmd.tag, srr_rel_offs, 5795 cmd->offset, cmd->offset + cmd->bufflen); 5796 return -EINVAL; 5797 } 5798 5799 /* 5800 * srr_rel_offs is the offset of the data we need from the beginning of 5801 * the *original* buffer. 5802 * 5803 * cmd->offset is the offset of the current cmd scatterlist from the 5804 * beginning of the *original* buffer, which might be nonzero if there 5805 * was a previous SRR and the buffer could not be reset back to its 5806 * original size. 5807 * 5808 * rel_offs is the offset of the data we need from the beginning of the 5809 * current cmd scatterlist. 5810 */ 5811 rel_offs = srr_rel_offs - cmd->offset; 5812 5813 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1101f, 5814 "qla_target(%d): tag %lld: current buffer [%u - %u); srr_rel_offs=%d, rel_offs=%d\n", 5815 vha->vp_idx, cmd->se_cmd.tag, cmd->offset, 5816 cmd->offset + cmd->bufflen, srr_rel_offs, rel_offs); 5817 5818 *xmit_type = QLA_TGT_XMIT_ALL; 5819 5820 if (rel_offs == cmd->bufflen) 5821 *xmit_type = QLA_TGT_XMIT_STATUS; 5822 else if (rel_offs > 0) 5823 res = qlt_set_data_offset(cmd, rel_offs); 5824 5825 return res; 5826} 5827 5828/* 5829 * Process a SRR (Sequence Retransmission Request) for a SCSI command once both 5830 * the immediate notify SRR and CTIO SRR have been received from the hw. 5831 * 5832 * Process context, no locks 5833 */ 5834static void qlt_handle_srr(struct scsi_qla_host *vha, struct qla_tgt_srr *srr) 5835{ 5836 struct qla_tgt_cmd *cmd = srr->cmd; 5837 struct se_cmd *se_cmd = &cmd->se_cmd; 5838 struct qla_qpair *qpair = cmd->qpair; 5839 struct qla_hw_data *ha = vha->hw; 5840 uint8_t op = cmd->cdb ? cmd->cdb[0] : 0; 5841 uint32_t srr_rel_offs = le32_to_cpu(srr->imm_ntfy.u.isp24.srr_rel_offs); 5842 uint16_t srr_ui = le16_to_cpu(srr->imm_ntfy.u.isp24.srr_ui); 5843 int xmit_type = 0; 5844 bool xmit_response = false; 5845 bool rdy_to_xfer = false; 5846 bool did_timeout; 5847 bool send_term_exch = false; 5848 5849 spin_lock_irq(qpair->qp_lock_ptr); 5850 5851 WARN_ON(cmd->cmd_sent_to_fw); 5852 5853 cmd->srr = NULL; 5854 5855 if (qlt_srr_is_chip_reset(vha, qpair, srr)) 5856 goto out_advance_cmd; 5857 5858 if (cmd->sent_term_exchg || cmd->sess->deleted || srr->aborted) { 5859 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11010, 5860 "qla_target(%d): tag %lld: IMM SRR: cmd already aborted\n", 5861 vha->vp_idx, cmd->se_cmd.tag); 5862 5863 spin_unlock_irq(qpair->qp_lock_ptr); 5864 5865 spin_lock_irq(&ha->hardware_lock); 5866 if (!qlt_srr_is_chip_reset(vha, ha->base_qpair, srr)) 5867 qlt_send_term_imm_notif(vha, &srr->imm_ntfy, 1); 5868 spin_unlock_irq(&ha->hardware_lock); 5869 5870 send_term_exch = true; 5871 5872 spin_lock_irq(qpair->qp_lock_ptr); 5873 goto out_advance_cmd; 5874 } 5875 5876 if (srr->reject) 5877 goto out_reject; 5878 5879 /* 5880 * If we receive multiple SRRs for the same command, place a time limit 5881 * on how long we are willing to retry. This timeout should be less 5882 * than SQA_MAX_HW_PENDING_TIME in scst_qla2xxx.c. 5883 */ 5884 did_timeout = time_is_before_jiffies64((cmd->jiffies_at_hw_st_entry ? : 5885 cmd->jiffies_at_alloc) + 30 * HZ); 5886 5887 qlt_restore_orig_sg(cmd); 5888 5889 switch (srr_ui) { 5890 case SRR_IU_STATUS: 5891 if (cmd->state != QLA_TGT_STATE_PROCESSED) { 5892 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11011, 5893 "qla_target(%d): tag %lld, op %x: reject SRR_IU_STATUS due to unexpected state %d\n", 5894 vha->vp_idx, se_cmd->tag, op, 5895 cmd->state); 5896 goto out_reject; 5897 } 5898 5899 if (did_timeout) { 5900 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11033, 5901 "qla_target(%d): tag %lld, op %x: reject SRR_IU_STATUS due to timeout\n", 5902 vha->vp_idx, se_cmd->tag, op); 5903 goto out_reject; 5904 } 5905 5906 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11012, 5907 "qla_target(%d): tag %lld, op %x: accept SRR_IU_STATUS and retransmit scsi_status=%x\n", 5908 vha->vp_idx, se_cmd->tag, op, 5909 se_cmd->scsi_status); 5910 xmit_type = QLA_TGT_XMIT_STATUS; 5911 xmit_response = true; 5912 cmd->trc_flags |= TRC_SRR_RSP; 5913 break; 5914 5915 case SRR_IU_DATA_IN: 5916 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11013, 5917 "qla_target(%d): tag %lld, op %x: process SRR_IU_DATA_IN: bufflen=%d, sg_cnt=%d, offset=%d, srr_offset=%d, scsi_status=%x\n", 5918 vha->vp_idx, se_cmd->tag, op, cmd->bufflen, 5919 cmd->sg_cnt, cmd->offset, srr_rel_offs, 5920 se_cmd->scsi_status); 5921 5922 if (cmd->state != QLA_TGT_STATE_PROCESSED) { 5923 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11014, 5924 "qla_target(%d): tag %lld: reject SRR_IU_DATA_IN due to unexpected state %d\n", 5925 vha->vp_idx, se_cmd->tag, cmd->state); 5926 goto out_reject; 5927 } 5928 5929 /* 5930 * QLA_TGT_STATE_PROCESSED does not necessarily imply data-in 5931 */ 5932 if (!qlt_has_data(cmd)) { 5933 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11015, 5934 "qla_target(%d): tag %lld: reject SRR_IU_DATA_IN because cmd has no data to send\n", 5935 vha->vp_idx, se_cmd->tag); 5936 goto out_reject; 5937 } 5938 5939 if (!cmd->sg || !cmd->sg_cnt) { 5940 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11016, 5941 "qla_target(%d): tag %lld: reject SRR_IU_DATA_IN because buffer is missing\n", 5942 vha->vp_idx, se_cmd->tag); 5943 goto out_reject; 5944 } 5945 5946 if (did_timeout) { 5947 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11034, 5948 "qla_target(%d): tag %lld, op %x: reject SRR_IU_DATA_IN due to timeout\n", 5949 vha->vp_idx, se_cmd->tag, op); 5950 goto out_reject; 5951 } 5952 5953 if (qlt_srr_adjust_data(cmd, srr_rel_offs, &xmit_type) != 0) 5954 goto out_reject; 5955 5956 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11017, 5957 "qla_target(%d): tag %lld: accept SRR_IU_DATA_IN and retransmit data: bufflen=%d, offset=%d\n", 5958 vha->vp_idx, se_cmd->tag, cmd->bufflen, 5959 cmd->offset); 5960 xmit_response = true; 5961 cmd->trc_flags |= TRC_SRR_RSP; 5962 break; 5963 5964 case SRR_IU_DATA_OUT: 5965 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11018, 5966 "qla_target(%d): tag %lld, op %x: process SRR_IU_DATA_OUT: bufflen=%d, sg_cnt=%d, offset=%d, srr_offset=%d\n", 5967 vha->vp_idx, se_cmd->tag, op, cmd->bufflen, 5968 cmd->sg_cnt, cmd->offset, srr_rel_offs); 5969 5970 if (cmd->state != QLA_TGT_STATE_NEED_DATA) { 5971 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11019, 5972 "qla_target(%d): tag %lld: reject SRR_IU_DATA_OUT due to unexpected state %d\n", 5973 vha->vp_idx, se_cmd->tag, cmd->state); 5974 goto out_reject; 5975 } 5976 5977 /* 5978 * QLA_TGT_STATE_NEED_DATA implies there should be data-out 5979 */ 5980 if (!qlt_has_data(cmd) || !cmd->sg || !cmd->sg_cnt) { 5981 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1101a, 5982 "qla_target(%d): tag %lld: reject SRR_IU_DATA_OUT because buffer is missing\n", 5983 vha->vp_idx, se_cmd->tag); 5984 goto out_reject; 5985 } 5986 5987 if (did_timeout) { 5988 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11035, 5989 "qla_target(%d): tag %lld, op %x: reject SRR_IU_DATA_OUT due to timeout\n", 5990 vha->vp_idx, se_cmd->tag, op); 5991 goto out_reject; 5992 } 5993 5994 if (qlt_srr_adjust_data(cmd, srr_rel_offs, &xmit_type) != 0) 5995 goto out_reject; 5996 5997 if (!(xmit_type & QLA_TGT_XMIT_DATA)) { 5998 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1101b, 5999 "qla_target(%d): tag %lld: reject SRR_IU_DATA_OUT: bad offset\n", 6000 vha->vp_idx, se_cmd->tag); 6001 goto out_reject; 6002 } 6003 6004 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1101c, 6005 "qla_target(%d): tag %lld: accept SRR_IU_DATA_OUT and receive data again: bufflen=%d, offset=%d\n", 6006 vha->vp_idx, se_cmd->tag, cmd->bufflen, 6007 cmd->offset); 6008 cmd->trc_flags |= TRC_SRR_XRDY; 6009 rdy_to_xfer = true; 6010 break; 6011 6012 default: 6013 ql_dbg(ql_dbg_tgt_mgt, vha, 0x1101d, 6014 "qla_target(%d): tag %lld, op %x: reject unknown srr_ui value 0x%x: state=%d, bufflen=%d, offset=%d, srr_offset=%d\n", 6015 vha->vp_idx, se_cmd->tag, op, srr_ui, cmd->state, 6016 cmd->bufflen, cmd->offset, srr_rel_offs); 6017 goto out_reject; 6018 } 6019 6020 qlt_send_notify_ack(qpair, &srr->imm_ntfy, 0, 0, 0, 6021 NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 6022 6023 spin_unlock_irq(qpair->qp_lock_ptr); 6024 6025 if (xmit_response) { 6026 /* For status and data-in, retransmit the response. */ 6027 if (qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status)) { 6028 send_term_exch = true; 6029 spin_lock_irq(qpair->qp_lock_ptr); 6030 goto out_advance_cmd; 6031 } 6032 } else if (rdy_to_xfer) { 6033 /* For data-out, receive data again. */ 6034 if (qlt_rdy_to_xfer(cmd)) { 6035 send_term_exch = true; 6036 spin_lock_irq(qpair->qp_lock_ptr); 6037 goto out_advance_cmd; 6038 } 6039 } 6040 6041 return; 6042 6043out_reject: 6044 qlt_send_notify_ack(qpair, &srr->imm_ntfy, 0, 0, 0, 6045 NOTIFY_ACK_SRR_FLAGS_REJECT, 6046 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 6047 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 6048 6049out_advance_cmd: 6050 if (!cmd->sent_term_exchg && 6051 (send_term_exch || cmd->state != QLA_TGT_STATE_NEED_DATA) && 6052 !qlt_srr_is_chip_reset(vha, qpair, srr)) { 6053 cmd->trc_flags |= TRC_SRR_TERM; 6054 qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1); 6055 } 6056 if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 6057 /* 6058 * The initiator should abort the command, but if not, try to 6059 * return an error. 6060 */ 6061 cmd->srr_failed = 1; 6062 cmd->write_data_transferred = 0; 6063 cmd->state = QLA_TGT_STATE_DATA_IN; 6064 cmd->jiffies_at_hw_st_entry = 0; 6065 vha->hw->tgt.tgt_ops->handle_data(cmd); 6066 } else { 6067 vha->hw->tgt.tgt_ops->free_cmd(cmd); 6068 } 6069 spin_unlock_irq(qpair->qp_lock_ptr); 6070} 6071 6072/* Workqueue function for processing SRR work in process context. */ 6073static void qlt_handle_srr_work(struct work_struct *work) 6074{ 6075 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work); 6076 struct scsi_qla_host *vha = tgt->vha; 6077 6078 ql_dbg(ql_dbg_tgt_mgt, vha, 0x11032, 6079 "qla_target(%d): Entering SRR work\n", vha->vp_idx); 6080 6081 for (;;) { 6082 struct qla_tgt_srr *srr; 6083 6084 spin_lock_irq(&tgt->srr_lock); 6085 srr = list_first_entry_or_null(&tgt->srr_list, typeof(*srr), 6086 srr_list_entry); 6087 if (!srr) { 6088 spin_unlock_irq(&tgt->srr_lock); 6089 break; 6090 } 6091 list_del(&srr->srr_list_entry); 6092 spin_unlock_irq(&tgt->srr_lock); 6093 6094 if (!srr->cmd) { 6095 qlt_handle_srr_imm(vha, srr); 6096 } else { 6097 qlt_handle_srr(vha, srr); 6098 vha->hw->tgt.tgt_ops->put_cmd_ref(srr->cmd); 6099 kfree(srr); 6100 } 6101 } 6102} 6103 6104/* 6105 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6106 */ 6107static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 6108 struct imm_ntfy_from_isp *iocb) 6109{ 6110 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6111 struct qla_hw_data *ha = vha->hw; 6112 struct fc_port *sess = NULL, *conflict_sess = NULL; 6113 uint64_t wwn; 6114 port_id_t port_id; 6115 uint16_t loop_id; 6116 uint16_t wd3_lo; 6117 int res = 0; 6118 unsigned long flags; 6119 6120 lockdep_assert_held(&ha->hardware_lock); 6121 6122 wwn = wwn_to_u64(iocb->u.isp24.port_name); 6123 6124 port_id.b.domain = iocb->u.isp24.port_id[2]; 6125 port_id.b.area = iocb->u.isp24.port_id[1]; 6126 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 6127 port_id.b.rsvd_1 = 0; 6128 6129 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 6130 6131 ql_dbg(ql_dbg_disc, vha, 0xf026, 6132 "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", 6133 vha->vp_idx, iocb->u.isp24.port_id[2], 6134 iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], 6135 iocb->u.isp24.status_subcode, loop_id, 6136 iocb->u.isp24.port_name); 6137 6138 /* res = 1 means ack at the end of thread 6139 * res = 0 means ack async/later. 6140 */ 6141 switch (iocb->u.isp24.status_subcode) { 6142 case ELS_PLOGI: 6143 res = qlt_handle_login(vha, iocb); 6144 break; 6145 6146 case ELS_PRLI: 6147 if (N2N_TOPO(ha)) { 6148 sess = qla2x00_find_fcport_by_wwpn(vha, 6149 iocb->u.isp24.port_name, 1); 6150 6151 if (vha->hw->flags.edif_enabled && sess && 6152 (!(sess->flags & FCF_FCSP_DEVICE) || 6153 !sess->edif.authok)) { 6154 ql_dbg(ql_dbg_disc, vha, 0xffff, 6155 "%s %d %8phC Term PRLI due to unauthorize PRLI\n", 6156 __func__, __LINE__, iocb->u.isp24.port_name); 6157 qlt_send_term_imm_notif(vha, iocb, 1); 6158 break; 6159 } 6160 6161 if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { 6162 ql_dbg(ql_dbg_disc, vha, 0xffff, 6163 "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", 6164 __func__, __LINE__, 6165 iocb->u.isp24.port_name); 6166 qlt_send_term_imm_notif(vha, iocb, 1); 6167 break; 6168 } 6169 6170 res = qlt_handle_login(vha, iocb); 6171 break; 6172 } 6173 6174 if (IS_SW_RESV_ADDR(port_id)) { 6175 res = 1; 6176 break; 6177 } 6178 6179 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 6180 6181 if (wwn) { 6182 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 6183 sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, 6184 loop_id, &conflict_sess); 6185 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 6186 } 6187 6188 if (conflict_sess) { 6189 switch (conflict_sess->disc_state) { 6190 case DSC_DELETED: 6191 case DSC_DELETE_PEND: 6192 break; 6193 default: 6194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 6195 "PRLI with conflicting sess %p port %8phC\n", 6196 conflict_sess, conflict_sess->port_name); 6197 conflict_sess->fw_login_state = 6198 DSC_LS_PORT_UNAVAIL; 6199 qlt_send_term_imm_notif(vha, iocb, 1); 6200 res = 0; 6201 break; 6202 } 6203 } 6204 6205 if (sess != NULL) { 6206 bool delete = false; 6207 int sec; 6208 6209 if (vha->hw->flags.edif_enabled && sess && 6210 (!(sess->flags & FCF_FCSP_DEVICE) || 6211 !sess->edif.authok)) { 6212 ql_dbg(ql_dbg_disc, vha, 0xffff, 6213 "%s %d %8phC Term PRLI due to unauthorize prli\n", 6214 __func__, __LINE__, iocb->u.isp24.port_name); 6215 qlt_send_term_imm_notif(vha, iocb, 1); 6216 break; 6217 } 6218 6219 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 6220 switch (sess->fw_login_state) { 6221 case DSC_LS_PLOGI_PEND: 6222 case DSC_LS_PLOGI_COMP: 6223 case DSC_LS_PRLI_COMP: 6224 break; 6225 default: 6226 delete = true; 6227 break; 6228 } 6229 6230 switch (sess->disc_state) { 6231 case DSC_UPD_FCPORT: 6232 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 6233 flags); 6234 6235 sec = jiffies_to_msecs(jiffies - 6236 sess->jiffies_at_registration)/1000; 6237 if (sess->sec_since_registration < sec && sec && 6238 !(sec % 5)) { 6239 sess->sec_since_registration = sec; 6240 ql_dbg(ql_dbg_disc, sess->vha, 0xffff, 6241 "%s %8phC : Slow Rport registration(%d Sec)\n", 6242 __func__, sess->port_name, sec); 6243 } 6244 qlt_send_term_imm_notif(vha, iocb, 1); 6245 return 0; 6246 6247 case DSC_LOGIN_PEND: 6248 case DSC_GPDB: 6249 case DSC_LOGIN_COMPLETE: 6250 case DSC_ADISC: 6251 delete = false; 6252 break; 6253 default: 6254 break; 6255 } 6256 6257 if (delete) { 6258 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, 6259 flags); 6260 /* 6261 * Impatient initiator sent PRLI before last 6262 * PLOGI could finish. Will force him to re-try, 6263 * while last one finishes. 6264 */ 6265 ql_log(ql_log_warn, sess->vha, 0xf095, 6266 "sess %p PRLI received, before plogi ack.\n", 6267 sess); 6268 qlt_send_term_imm_notif(vha, iocb, 1); 6269 res = 0; 6270 break; 6271 } 6272 6273 /* 6274 * This shouldn't happen under normal circumstances, 6275 * since we have deleted the old session during PLOGI 6276 */ 6277 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 6278 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 6279 sess->loop_id, sess, iocb->u.isp24.nport_handle); 6280 6281 sess->local = 0; 6282 sess->loop_id = loop_id; 6283 sess->d_id = port_id; 6284 sess->fw_login_state = DSC_LS_PRLI_PEND; 6285 6286 if (wd3_lo & BIT_7) 6287 sess->conf_compl_supported = 1; 6288 6289 if ((wd3_lo & BIT_4) == 0) 6290 sess->port_type = FCT_INITIATOR; 6291 else 6292 sess->port_type = FCT_TARGET; 6293 6294 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 6295 } 6296 res = 1; /* send notify ack */ 6297 6298 /* Make session global (not used in fabric mode) */ 6299 if (ha->current_topology != ISP_CFG_F) { 6300 if (sess) { 6301 ql_dbg(ql_dbg_disc, vha, 0x20fa, 6302 "%s %d %8phC post nack\n", 6303 __func__, __LINE__, sess->port_name); 6304 qla24xx_post_nack_work(vha, sess, iocb, 6305 SRB_NACK_PRLI); 6306 res = 0; 6307 } else { 6308 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 6309 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 6310 qla2xxx_wake_dpc(vha); 6311 } 6312 } else { 6313 if (sess) { 6314 ql_dbg(ql_dbg_disc, vha, 0x20fb, 6315 "%s %d %8phC post nack\n", 6316 __func__, __LINE__, sess->port_name); 6317 qla24xx_post_nack_work(vha, sess, iocb, 6318 SRB_NACK_PRLI); 6319 res = 0; 6320 } 6321 } 6322 break; 6323 6324 case ELS_TPRLO: 6325 if (le16_to_cpu(iocb->u.isp24.flags) & 6326 NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { 6327 loop_id = 0xFFFF; 6328 qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); 6329 res = 1; 6330 break; 6331 } 6332 fallthrough; 6333 case ELS_LOGO: 6334 case ELS_PRLO: 6335 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6336 sess = qla2x00_find_fcport_by_loopid(vha, loop_id); 6337 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6338 6339 if (sess) { 6340 sess->login_gen++; 6341 sess->fw_login_state = DSC_LS_LOGO_PEND; 6342 sess->logo_ack_needed = 1; 6343 memcpy(sess->iocb, iocb, IOCB_SIZE); 6344 } 6345 6346 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 6347 6348 ql_dbg(ql_dbg_disc, vha, 0x20fc, 6349 "%s: logo %llx res %d sess %p ", 6350 __func__, wwn, res, sess); 6351 if (res == 0) { 6352 /* 6353 * cmd went upper layer, look for qlt_xmit_tm_rsp() 6354 * for LOGO_ACK & sess delete 6355 */ 6356 BUG_ON(!sess); 6357 res = 0; 6358 } else { 6359 /* cmd did not go to upper layer. */ 6360 if (sess) { 6361 qlt_schedule_sess_for_deletion(sess); 6362 res = 0; 6363 } 6364 /* else logo will be ack */ 6365 } 6366 break; 6367 case ELS_PDISC: 6368 case ELS_ADISC: 6369 { 6370 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6371 6372 if (tgt->link_reinit_iocb_pending) { 6373 qlt_send_notify_ack(ha->base_qpair, 6374 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 6375 tgt->link_reinit_iocb_pending = 0; 6376 } 6377 6378 sess = qla2x00_find_fcport_by_wwpn(vha, 6379 iocb->u.isp24.port_name, 1); 6380 if (sess) { 6381 ql_dbg(ql_dbg_disc, vha, 0x20fd, 6382 "sess %p lid %d|%d DS %d LS %d\n", 6383 sess, sess->loop_id, loop_id, 6384 sess->disc_state, sess->fw_login_state); 6385 } 6386 6387 res = 1; /* send notify ack */ 6388 break; 6389 } 6390 6391 case ELS_FLOGI: /* should never happen */ 6392 default: 6393 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 6394 "qla_target(%d): Unsupported ELS command %x " 6395 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 6396 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 6397 break; 6398 } 6399 6400 ql_dbg(ql_dbg_disc, vha, 0xf026, 6401 "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", 6402 vha->vp_idx, iocb->u.isp24.status_subcode, res); 6403 6404 return res; 6405} 6406 6407/* 6408 * ha->hardware_lock supposed to be held on entry. 6409 * Might drop it, then reacquire. 6410 */ 6411static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 6412 struct imm_ntfy_from_isp *iocb) 6413{ 6414 struct qla_hw_data *ha = vha->hw; 6415 uint32_t add_flags = 0; 6416 int send_notify_ack = 1; 6417 uint16_t status; 6418 6419 lockdep_assert_held(&ha->hardware_lock); 6420 6421 status = le16_to_cpu(iocb->u.isp2x.status); 6422 switch (status) { 6423 case IMM_NTFY_LIP_RESET: 6424 { 6425 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 6426 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 6427 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 6428 iocb->u.isp24.status_subcode); 6429 6430 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 6431 send_notify_ack = 0; 6432 break; 6433 } 6434 6435 case IMM_NTFY_LIP_LINK_REINIT: 6436 { 6437 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6438 6439 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 6440 "qla_target(%d): LINK REINIT (loop %#x, " 6441 "subcode %x)\n", vha->vp_idx, 6442 le16_to_cpu(iocb->u.isp24.nport_handle), 6443 iocb->u.isp24.status_subcode); 6444 if (tgt->link_reinit_iocb_pending) { 6445 qlt_send_notify_ack(ha->base_qpair, 6446 &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); 6447 } 6448 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 6449 tgt->link_reinit_iocb_pending = 1; 6450 /* 6451 * QLogic requires to wait after LINK REINIT for possible 6452 * PDISC or ADISC ELS commands 6453 */ 6454 send_notify_ack = 0; 6455 break; 6456 } 6457 6458 case IMM_NTFY_PORT_LOGOUT: 6459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 6460 "qla_target(%d): Port logout (loop " 6461 "%#x, subcode %x)\n", vha->vp_idx, 6462 le16_to_cpu(iocb->u.isp24.nport_handle), 6463 iocb->u.isp24.status_subcode); 6464 6465 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 6466 send_notify_ack = 0; 6467 /* The sessions will be cleared in the callback, if needed */ 6468 break; 6469 6470 case IMM_NTFY_GLBL_TPRLO: 6471 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 6472 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 6473 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 6474 send_notify_ack = 0; 6475 /* The sessions will be cleared in the callback, if needed */ 6476 break; 6477 6478 case IMM_NTFY_PORT_CONFIG: 6479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 6480 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 6481 status); 6482 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 6483 send_notify_ack = 0; 6484 /* The sessions will be cleared in the callback, if needed */ 6485 break; 6486 6487 case IMM_NTFY_GLBL_LOGO: 6488 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 6489 "qla_target(%d): Link failure detected\n", 6490 vha->vp_idx); 6491 /* I_T nexus loss */ 6492 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 6493 send_notify_ack = 0; 6494 break; 6495 6496 case IMM_NTFY_IOCB_OVERFLOW: 6497 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 6498 "qla_target(%d): Cannot provide requested " 6499 "capability (IOCB overflowed the immediate notify " 6500 "resource count)\n", vha->vp_idx); 6501 break; 6502 6503 case IMM_NTFY_ABORT_TASK: 6504 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 6505 "qla_target(%d): Abort Task (S %08x I %#x -> " 6506 "L %#x)\n", vha->vp_idx, 6507 le16_to_cpu(iocb->u.isp2x.seq_id), 6508 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 6509 le16_to_cpu(iocb->u.isp2x.lun)); 6510 if (qlt_abort_task(vha, iocb) == 0) 6511 send_notify_ack = 0; 6512 break; 6513 6514 case IMM_NTFY_RESOURCE: 6515 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 6516 "qla_target(%d): Out of resources, host %ld\n", 6517 vha->vp_idx, vha->host_no); 6518 break; 6519 6520 case IMM_NTFY_MSG_RX: 6521 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 6522 "qla_target(%d): Immediate notify task %x\n", 6523 vha->vp_idx, iocb->u.isp2x.task_flags); 6524 break; 6525 6526 case IMM_NTFY_ELS: 6527 if (qlt_24xx_handle_els(vha, iocb) == 0) 6528 send_notify_ack = 0; 6529 break; 6530 6531 case IMM_NTFY_SRR: 6532 qlt_prepare_srr_imm(vha, iocb); 6533 send_notify_ack = 0; 6534 break; 6535 6536 default: 6537 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 6538 "qla_target(%d): Received unknown immediate " 6539 "notify status %x\n", vha->vp_idx, status); 6540 break; 6541 } 6542 6543 if (send_notify_ack) 6544 qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, 6545 0, 0); 6546} 6547 6548/* 6549 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 6550 * This function sends busy to ISP 2xxx or 24xx. 6551 */ 6552static int __qlt_send_busy(struct qla_qpair *qpair, 6553 struct atio_from_isp *atio, uint16_t status) 6554{ 6555 struct scsi_qla_host *vha = qpair->vha; 6556 struct ctio7_to_24xx *ctio24; 6557 struct qla_hw_data *ha = vha->hw; 6558 request_t *pkt; 6559 struct fc_port *sess = NULL; 6560 unsigned long flags; 6561 u16 temp; 6562 port_id_t id; 6563 6564 id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); 6565 6566 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 6567 sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); 6568 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6569 if (!sess) { 6570 qlt_send_term_exchange(qpair, NULL, atio, 1); 6571 return 0; 6572 } 6573 /* Sending marker isn't necessary, since we called from ISR */ 6574 6575 pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); 6576 if (!pkt) { 6577 ql_dbg(ql_dbg_io, vha, 0x3063, 6578 "qla_target(%d): %s failed: unable to allocate " 6579 "request packet", vha->vp_idx, __func__); 6580 return -ENOMEM; 6581 } 6582 6583 qpair->tgt_counters.num_q_full_sent++; 6584 pkt->entry_count = 1; 6585 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 6586 6587 ctio24 = (struct ctio7_to_24xx *)pkt; 6588 ctio24->entry_type = CTIO_TYPE7; 6589 ctio24->nport_handle = cpu_to_le16(sess->loop_id); 6590 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 6591 ctio24->vp_index = vha->vp_idx; 6592 ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); 6593 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 6594 temp = (atio->u.isp24.attr << 9) | 6595 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 6596 CTIO7_FLAGS_DONT_RET_CTIO; 6597 ctio24->u.status1.flags = cpu_to_le16(temp); 6598 /* 6599 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 6600 * if the explicit conformation is used. 6601 */ 6602 ctio24->u.status1.ox_id = 6603 cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 6604 ctio24->u.status1.scsi_status = cpu_to_le16(status); 6605 6606 ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); 6607 6608 if (ctio24->u.status1.residual != 0) 6609 ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); 6610 6611 /* Memory Barrier */ 6612 wmb(); 6613 if (qpair->reqq_start_iocbs) 6614 qpair->reqq_start_iocbs(qpair); 6615 else 6616 qla2x00_start_iocbs(vha, qpair->req); 6617 return 0; 6618} 6619 6620/* 6621 * This routine is used to allocate a command for either a QFull condition 6622 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 6623 * out previously. 6624 */ 6625static void 6626qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 6627 struct atio_from_isp *atio, uint16_t status, int qfull) 6628{ 6629 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6630 struct qla_hw_data *ha = vha->hw; 6631 struct fc_port *sess; 6632 struct qla_tgt_cmd *cmd; 6633 unsigned long flags; 6634 6635 if (unlikely(tgt->tgt_stop)) { 6636 ql_dbg(ql_dbg_io, vha, 0x300a, 6637 "New command while device %p is shutting down\n", tgt); 6638 return; 6639 } 6640 6641 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 6642 vha->hw->tgt.num_qfull_cmds_dropped++; 6643 if (vha->hw->tgt.num_qfull_cmds_dropped > 6644 vha->qla_stats.stat_max_qfull_cmds_dropped) 6645 vha->qla_stats.stat_max_qfull_cmds_dropped = 6646 vha->hw->tgt.num_qfull_cmds_dropped; 6647 6648 ql_dbg(ql_dbg_io, vha, 0x3068, 6649 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 6650 vha->vp_idx, __func__, 6651 vha->hw->tgt.num_qfull_cmds_dropped); 6652 6653 qlt_chk_exch_leak_thresh_hold(vha); 6654 return; 6655 } 6656 6657 sess = ha->tgt.tgt_ops->find_sess_by_s_id 6658 (vha, atio->u.isp24.fcp_hdr.s_id); 6659 if (!sess) 6660 return; 6661 6662 cmd = ha->tgt.tgt_ops->get_cmd(sess); 6663 if (!cmd) { 6664 ql_dbg(ql_dbg_io, vha, 0x3009, 6665 "qla_target(%d): %s: Allocation of cmd failed\n", 6666 vha->vp_idx, __func__); 6667 6668 vha->hw->tgt.num_qfull_cmds_dropped++; 6669 if (vha->hw->tgt.num_qfull_cmds_dropped > 6670 vha->qla_stats.stat_max_qfull_cmds_dropped) 6671 vha->qla_stats.stat_max_qfull_cmds_dropped = 6672 vha->hw->tgt.num_qfull_cmds_dropped; 6673 6674 qlt_chk_exch_leak_thresh_hold(vha); 6675 return; 6676 } 6677 6678 qlt_incr_num_pend_cmds(vha); 6679 INIT_LIST_HEAD(&cmd->cmd_list); 6680 memcpy_atio(&cmd->atio, atio); 6681 6682 cmd->tgt = vha->vha_tgt.qla_tgt; 6683 cmd->vha = vha; 6684 cmd->reset_count = ha->base_qpair->chip_reset; 6685 cmd->q_full = 1; 6686 cmd->qpair = ha->base_qpair; 6687 cmd->cdb = &cmd->atio.u.isp24.fcp_cmnd.cdb[0]; 6688 cmd->cdb_len = 16; 6689 6690 if (qfull) { 6691 cmd->q_full = 1; 6692 /* NOTE: borrowing the state field to carry the status */ 6693 cmd->state = status; 6694 } else 6695 cmd->term_exchg = 1; 6696 6697 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 6698 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 6699 6700 vha->hw->tgt.num_qfull_cmds_alloc++; 6701 if (vha->hw->tgt.num_qfull_cmds_alloc > 6702 vha->qla_stats.stat_max_qfull_cmds_alloc) 6703 vha->qla_stats.stat_max_qfull_cmds_alloc = 6704 vha->hw->tgt.num_qfull_cmds_alloc; 6705 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 6706} 6707 6708static void 6709qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, 6710 uint16_t status) 6711{ 6712 int rc = 0; 6713 struct scsi_qla_host *vha = qpair->vha; 6714 6715 rc = __qlt_send_busy(qpair, atio, status); 6716 if (rc == -ENOMEM) 6717 qlt_alloc_qfull_cmd(vha, atio, status, 1); 6718} 6719 6720static int 6721qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, 6722 struct atio_from_isp *atio, uint8_t ha_locked) 6723{ 6724 struct qla_hw_data *ha = vha->hw; 6725 unsigned long flags; 6726 6727 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 6728 return 0; 6729 6730 if (!ha_locked) 6731 spin_lock_irqsave(&ha->hardware_lock, flags); 6732 qlt_send_busy(qpair, atio, qla_sam_status); 6733 if (!ha_locked) 6734 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6735 6736 return 1; 6737} 6738 6739/* ha->hardware_lock supposed to be held on entry */ 6740/* called via callback from qla2xxx */ 6741static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 6742 struct atio_from_isp *atio, uint8_t ha_locked) 6743{ 6744 struct qla_hw_data *ha = vha->hw; 6745 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6746 int rc; 6747 unsigned long flags = 0; 6748 6749 if (unlikely(tgt == NULL)) { 6750 ql_dbg(ql_dbg_tgt, vha, 0x3064, 6751 "ATIO pkt, but no tgt (ha %p)", ha); 6752 return; 6753 } 6754 /* 6755 * In tgt_stop mode we also should allow all requests to pass. 6756 * Otherwise, some commands can stuck. 6757 */ 6758 6759 tgt->atio_irq_cmd_count++; 6760 6761 switch (atio->u.raw.entry_type) { 6762 case ATIO_TYPE7: 6763 if (unlikely(atio->u.isp24.exchange_addr == 6764 cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { 6765 ql_dbg(ql_dbg_io, vha, 0x3065, 6766 "qla_target(%d): ATIO_TYPE7 " 6767 "received with UNKNOWN exchange address, " 6768 "sending QUEUE_FULL\n", vha->vp_idx); 6769 if (!ha_locked) 6770 spin_lock_irqsave(&ha->hardware_lock, flags); 6771 qlt_send_busy(ha->base_qpair, atio, qla_sam_status); 6772 if (!ha_locked) 6773 spin_unlock_irqrestore(&ha->hardware_lock, 6774 flags); 6775 break; 6776 } 6777 6778 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 6779 rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, 6780 atio, ha_locked); 6781 if (rc != 0) { 6782 tgt->atio_irq_cmd_count--; 6783 return; 6784 } 6785 rc = qlt_handle_cmd_for_atio(vha, atio); 6786 } else { 6787 rc = qlt_handle_task_mgmt(vha, atio); 6788 } 6789 if (unlikely(rc != 0)) { 6790 if (!ha_locked) 6791 spin_lock_irqsave(&ha->hardware_lock, flags); 6792 switch (rc) { 6793 case -ENODEV: 6794 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 6795 "qla_target: Unable to send command to target\n"); 6796 break; 6797 case -EBADF: 6798 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 6799 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 6800 qlt_send_term_exchange(ha->base_qpair, NULL, 6801 atio, 1); 6802 break; 6803 case -EBUSY: 6804 ql_dbg(ql_dbg_tgt, vha, 0xe060, 6805 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 6806 vha->vp_idx); 6807 qlt_send_busy(ha->base_qpair, atio, 6808 tc_sam_status); 6809 break; 6810 default: 6811 ql_dbg(ql_dbg_tgt, vha, 0xe060, 6812 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 6813 vha->vp_idx); 6814 qlt_send_busy(ha->base_qpair, atio, 6815 qla_sam_status); 6816 break; 6817 } 6818 if (!ha_locked) 6819 spin_unlock_irqrestore(&ha->hardware_lock, 6820 flags); 6821 } 6822 break; 6823 6824 case IMMED_NOTIFY_TYPE: 6825 { 6826 if (unlikely(atio->u.isp2x.entry_status != 0)) { 6827 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 6828 "qla_target(%d): Received ATIO packet %x " 6829 "with error status %x\n", vha->vp_idx, 6830 atio->u.raw.entry_type, 6831 atio->u.isp2x.entry_status); 6832 break; 6833 } 6834 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 6835 6836 if (!ha_locked) 6837 spin_lock_irqsave(&ha->hardware_lock, flags); 6838 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 6839 if (!ha_locked) 6840 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6841 break; 6842 } 6843 6844 default: 6845 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 6846 "qla_target(%d): Received unknown ATIO atio " 6847 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 6848 break; 6849 } 6850 6851 tgt->atio_irq_cmd_count--; 6852} 6853 6854/* 6855 * qpair lock is assume to be held 6856 * rc = 0 : send terminate & abts respond 6857 * rc != 0: do not send term & abts respond 6858 */ 6859static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, 6860 struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) 6861{ 6862 struct qla_hw_data *ha = vha->hw; 6863 int rc = 0; 6864 6865 /* 6866 * Detect unresolved exchange. If the same ABTS is unable 6867 * to terminate an existing command and the same ABTS loops 6868 * between FW & Driver, then force FW dump. Under 1 jiff, 6869 * we should see multiple loops. 6870 */ 6871 if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && 6872 qpair->retry_term_jiff == jiffies) { 6873 /* found existing exchange */ 6874 qpair->retry_term_cnt++; 6875 if (qpair->retry_term_cnt >= 5) { 6876 rc = -EIO; 6877 qpair->retry_term_cnt = 0; 6878 ql_log(ql_log_warn, vha, 0xffff, 6879 "Unable to send ABTS Respond. Dumping firmware.\n"); 6880 ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, 6881 vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); 6882 6883 if (qpair == ha->base_qpair) 6884 ha->isp_ops->fw_dump(vha); 6885 else 6886 qla2xxx_dump_fw(vha); 6887 6888 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6889 qla2xxx_wake_dpc(vha); 6890 } 6891 } else if (qpair->retry_term_jiff != jiffies) { 6892 qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; 6893 qpair->retry_term_cnt = 0; 6894 qpair->retry_term_jiff = jiffies; 6895 } 6896 6897 return rc; 6898} 6899 6900 6901static void qlt_handle_abts_completion(struct scsi_qla_host *vha, 6902 struct rsp_que *rsp, response_t *pkt) 6903{ 6904 struct abts_resp_from_24xx_fw *entry = 6905 (struct abts_resp_from_24xx_fw *)pkt; 6906 u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; 6907 struct qla_tgt_mgmt_cmd *mcmd; 6908 struct qla_hw_data *ha = vha->hw; 6909 6910 mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, TYPE_TGT_TMCMD, pkt); 6911 if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { 6912 ql_dbg(ql_dbg_async, vha, 0xe064, 6913 "qla_target(%d): ABTS Comp without mcmd\n", 6914 vha->vp_idx); 6915 return; 6916 } 6917 6918 if (mcmd) 6919 vha = mcmd->vha; 6920 vha->vha_tgt.qla_tgt->abts_resp_expected--; 6921 6922 ql_dbg(ql_dbg_tgt, vha, 0xe038, 6923 "ABTS_RESP_24XX: compl_status %x\n", 6924 entry->compl_status); 6925 6926 if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { 6927 if (le32_to_cpu(entry->error_subcode1) == 0x1E && 6928 le32_to_cpu(entry->error_subcode2) == 0) { 6929 if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { 6930 qlt_free_ul_mcmd(ha, mcmd); 6931 return; 6932 } 6933 qlt_24xx_retry_term_exchange(vha, rsp->qpair, 6934 pkt, mcmd); 6935 } else { 6936 ql_dbg(ql_dbg_tgt, vha, 0xe063, 6937 "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", 6938 vha->vp_idx, entry->compl_status, 6939 entry->error_subcode1, 6940 entry->error_subcode2); 6941 qlt_free_ul_mcmd(ha, mcmd); 6942 } 6943 } else if (mcmd) { 6944 qlt_free_ul_mcmd(ha, mcmd); 6945 } 6946} 6947 6948/* ha->hardware_lock supposed to be held on entry */ 6949/* called via callback from qla2xxx */ 6950static void qlt_response_pkt(struct scsi_qla_host *vha, 6951 struct rsp_que *rsp, response_t *pkt) 6952{ 6953 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6954 6955 if (unlikely(tgt == NULL)) { 6956 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 6957 "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", 6958 vha->vp_idx, pkt->entry_type, vha->hw); 6959 return; 6960 } 6961 6962 /* 6963 * In tgt_stop mode we also should allow all requests to pass. 6964 * Otherwise, some commands can stuck. 6965 */ 6966 6967 switch (pkt->entry_type) { 6968 case CTIO_CRC2: 6969 case CTIO_TYPE7: 6970 { 6971 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 6972 6973 qlt_do_ctio_completion(vha, rsp, entry->handle, 6974 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 6975 entry); 6976 break; 6977 } 6978 6979 case ACCEPT_TGT_IO_TYPE: 6980 { 6981 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 6982 int rc; 6983 6984 if (atio->u.isp2x.status != 6985 cpu_to_le16(ATIO_CDB_VALID)) { 6986 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 6987 "qla_target(%d): ATIO with error " 6988 "status %x received\n", vha->vp_idx, 6989 le16_to_cpu(atio->u.isp2x.status)); 6990 break; 6991 } 6992 6993 rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); 6994 if (rc != 0) 6995 return; 6996 6997 rc = qlt_handle_cmd_for_atio(vha, atio); 6998 if (unlikely(rc != 0)) { 6999 switch (rc) { 7000 case -ENODEV: 7001 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 7002 "qla_target: Unable to send command to target\n"); 7003 break; 7004 case -EBADF: 7005 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 7006 "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); 7007 qlt_send_term_exchange(rsp->qpair, NULL, 7008 atio, 1); 7009 break; 7010 case -EBUSY: 7011 ql_dbg(ql_dbg_tgt, vha, 0xe060, 7012 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 7013 vha->vp_idx); 7014 qlt_send_busy(rsp->qpair, atio, 7015 tc_sam_status); 7016 break; 7017 default: 7018 ql_dbg(ql_dbg_tgt, vha, 0xe060, 7019 "qla_target(%d): Unable to send command to target, sending BUSY status\n", 7020 vha->vp_idx); 7021 qlt_send_busy(rsp->qpair, atio, 7022 qla_sam_status); 7023 break; 7024 } 7025 } 7026 } 7027 break; 7028 7029 case IMMED_NOTIFY_TYPE: 7030 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 7031 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 7032 break; 7033 7034 case NOTIFY_ACK_TYPE: 7035 if (tgt->notify_ack_expected > 0) { 7036 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 7037 7038 ql_dbg(ql_dbg_tgt, vha, 0xe036, 7039 "NOTIFY_ACK seq %08x status %x\n", 7040 le16_to_cpu(entry->u.isp2x.seq_id), 7041 le16_to_cpu(entry->u.isp2x.status)); 7042 tgt->notify_ack_expected--; 7043 if (entry->u.isp2x.status != 7044 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 7045 ql_dbg(ql_dbg_tgt, vha, 0xe061, 7046 "qla_target(%d): NOTIFY_ACK " 7047 "failed %x\n", vha->vp_idx, 7048 le16_to_cpu(entry->u.isp2x.status)); 7049 } 7050 } else { 7051 ql_dbg(ql_dbg_tgt, vha, 0xe062, 7052 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 7053 vha->vp_idx); 7054 } 7055 break; 7056 7057 case ABTS_RECV_24XX: 7058 ql_dbg(ql_dbg_tgt, vha, 0xe037, 7059 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 7060 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 7061 break; 7062 7063 case ABTS_RESP_24XX: 7064 if (tgt->abts_resp_expected > 0) { 7065 qlt_handle_abts_completion(vha, rsp, pkt); 7066 } else { 7067 ql_dbg(ql_dbg_tgt, vha, 0xe064, 7068 "qla_target(%d): Unexpected ABTS_RESP_24XX " 7069 "received\n", vha->vp_idx); 7070 } 7071 break; 7072 7073 default: 7074 ql_dbg(ql_dbg_tgt, vha, 0xe065, 7075 "qla_target(%d): Received unknown response pkt " 7076 "type %x\n", vha->vp_idx, pkt->entry_type); 7077 break; 7078 } 7079 7080} 7081 7082/* 7083 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 7084 */ 7085void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 7086 uint16_t *mailbox) 7087{ 7088 struct qla_hw_data *ha = vha->hw; 7089 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 7090 int login_code; 7091 7092 if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) 7093 return; 7094 7095 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 7096 IS_QLA2100(ha)) 7097 return; 7098 /* 7099 * In tgt_stop mode we also should allow all requests to pass. 7100 * Otherwise, some commands can stuck. 7101 */ 7102 7103 7104 switch (code) { 7105 case MBA_RESET: /* Reset */ 7106 case MBA_SYSTEM_ERR: /* System Error */ 7107 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 7108 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 7109 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 7110 "qla_target(%d): System error async event %#x " 7111 "occurred", vha->vp_idx, code); 7112 break; 7113 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 7114 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 7115 break; 7116 7117 case MBA_LOOP_UP: 7118 { 7119 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 7120 "qla_target(%d): Async LOOP_UP occurred " 7121 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 7122 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 7123 if (tgt->link_reinit_iocb_pending) { 7124 qlt_send_notify_ack(ha->base_qpair, 7125 &tgt->link_reinit_iocb, 7126 0, 0, 0, 0, 0, 0); 7127 tgt->link_reinit_iocb_pending = 0; 7128 } 7129 break; 7130 } 7131 7132 case MBA_LIP_OCCURRED: 7133 case MBA_LOOP_DOWN: 7134 case MBA_LIP_RESET: 7135 case MBA_RSCN_UPDATE: 7136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 7137 "qla_target(%d): Async event %#x occurred " 7138 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 7139 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 7140 break; 7141 7142 case MBA_REJECTED_FCP_CMD: 7143 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, 7144 "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", 7145 vha->vp_idx, 7146 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 7147 7148 if (mailbox[3] == 1) { 7149 /* exchange starvation. */ 7150 vha->hw->exch_starvation++; 7151 if (vha->hw->exch_starvation > 5) { 7152 ql_log(ql_log_warn, vha, 0xd03a, 7153 "Exchange starvation-. Resetting RISC\n"); 7154 7155 vha->hw->exch_starvation = 0; 7156 if (IS_P3P_TYPE(vha->hw)) 7157 set_bit(FCOE_CTX_RESET_NEEDED, 7158 &vha->dpc_flags); 7159 else 7160 set_bit(ISP_ABORT_NEEDED, 7161 &vha->dpc_flags); 7162 qla2xxx_wake_dpc(vha); 7163 } 7164 } 7165 break; 7166 7167 case MBA_PORT_UPDATE: 7168 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 7169 "qla_target(%d): Port update async event %#x " 7170 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 7171 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 7172 mailbox[0], mailbox[1], mailbox[2], mailbox[3]); 7173 7174 login_code = mailbox[2]; 7175 if (login_code == 0x4) { 7176 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 7177 "Async MB 2: Got PLOGI Complete\n"); 7178 vha->hw->exch_starvation = 0; 7179 } else if (login_code == 0x7) 7180 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 7181 "Async MB 2: Port Logged Out\n"); 7182 break; 7183 default: 7184 break; 7185 } 7186 7187} 7188 7189static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 7190 uint16_t loop_id) 7191{ 7192 fc_port_t *fcport, *tfcp, *del; 7193 int rc; 7194 unsigned long flags; 7195 u8 newfcport = 0; 7196 7197 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); 7198 if (!fcport) { 7199 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 7200 "qla_target(%d): Allocation of tmp FC port failed", 7201 vha->vp_idx); 7202 return NULL; 7203 } 7204 7205 fcport->loop_id = loop_id; 7206 7207 rc = qla24xx_gpdb_wait(vha, fcport, 0); 7208 if (rc != QLA_SUCCESS) { 7209 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 7210 "qla_target(%d): Failed to retrieve fcport " 7211 "information -- get_port_database() returned %x " 7212 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 7213 kfree(fcport); 7214 return NULL; 7215 } 7216 7217 del = NULL; 7218 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 7219 tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); 7220 7221 if (tfcp) { 7222 tfcp->d_id = fcport->d_id; 7223 tfcp->port_type = fcport->port_type; 7224 tfcp->supported_classes = fcport->supported_classes; 7225 tfcp->flags |= fcport->flags; 7226 tfcp->scan_state = QLA_FCPORT_FOUND; 7227 7228 del = fcport; 7229 fcport = tfcp; 7230 } else { 7231 if (vha->hw->current_topology == ISP_CFG_F) 7232 fcport->flags |= FCF_FABRIC_DEVICE; 7233 7234 list_add_tail(&fcport->list, &vha->vp_fcports); 7235 if (!IS_SW_RESV_ADDR(fcport->d_id)) 7236 vha->fcport_count++; 7237 fcport->login_gen++; 7238 qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); 7239 fcport->login_succ = 1; 7240 newfcport = 1; 7241 } 7242 7243 fcport->deleted = 0; 7244 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 7245 7246 switch (vha->host->active_mode) { 7247 case MODE_INITIATOR: 7248 case MODE_DUAL: 7249 if (newfcport) { 7250 if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { 7251 qla24xx_sched_upd_fcport(fcport); 7252 } else { 7253 ql_dbg(ql_dbg_disc, vha, 0x20ff, 7254 "%s %d %8phC post gpsc fcp_cnt %d\n", 7255 __func__, __LINE__, fcport->port_name, vha->fcport_count); 7256 qla24xx_post_gpsc_work(vha, fcport); 7257 } 7258 } 7259 break; 7260 7261 case MODE_TARGET: 7262 default: 7263 break; 7264 } 7265 if (del) 7266 qla2x00_free_fcport(del); 7267 7268 return fcport; 7269} 7270 7271/* Must be called under tgt_mutex */ 7272static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, 7273 be_id_t s_id) 7274{ 7275 struct fc_port *sess = NULL; 7276 fc_port_t *fcport = NULL; 7277 int rc, global_resets; 7278 uint16_t loop_id = 0; 7279 7280 if (s_id.domain == 0xFF && s_id.area == 0xFC) { 7281 /* 7282 * This is Domain Controller, so it should be 7283 * OK to drop SCSI commands from it. 7284 */ 7285 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 7286 "Unable to find initiator with S_ID %x:%x:%x", 7287 s_id.domain, s_id.area, s_id.al_pa); 7288 return NULL; 7289 } 7290 7291 mutex_lock(&vha->vha_tgt.tgt_mutex); 7292 7293retry: 7294 global_resets = 7295 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 7296 7297 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 7298 if (rc != 0) { 7299 mutex_unlock(&vha->vha_tgt.tgt_mutex); 7300 7301 ql_log(ql_log_info, vha, 0xf071, 7302 "qla_target(%d): Unable to find " 7303 "initiator with S_ID %x:%x:%x", 7304 vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); 7305 7306 if (rc == -ENOENT) { 7307 qlt_port_logo_t logo; 7308 7309 logo.id = be_to_port_id(s_id); 7310 logo.cmd_count = 1; 7311 qlt_send_first_logo(vha, &logo); 7312 } 7313 7314 return NULL; 7315 } 7316 7317 fcport = qlt_get_port_database(vha, loop_id); 7318 if (!fcport) { 7319 mutex_unlock(&vha->vha_tgt.tgt_mutex); 7320 return NULL; 7321 } 7322 7323 if (global_resets != 7324 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 7325 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 7326 "qla_target(%d): global reset during session discovery " 7327 "(counter was %d, new %d), retrying", vha->vp_idx, 7328 global_resets, 7329 atomic_read(&vha->vha_tgt. 7330 qla_tgt->tgt_global_resets_count)); 7331 goto retry; 7332 } 7333 7334 sess = qlt_create_sess(vha, fcport, true); 7335 7336 mutex_unlock(&vha->vha_tgt.tgt_mutex); 7337 7338 return sess; 7339} 7340 7341static void qlt_abort_work(struct qla_tgt *tgt, 7342 struct qla_tgt_sess_work_param *prm) 7343{ 7344 struct scsi_qla_host *vha = tgt->vha; 7345 struct qla_hw_data *ha = vha->hw; 7346 struct fc_port *sess = NULL; 7347 unsigned long flags = 0, flags2 = 0; 7348 be_id_t s_id; 7349 int rc; 7350 7351 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 7352 7353 if (tgt->tgt_stop) 7354 goto out_term2; 7355 7356 s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); 7357 7358 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 7359 if (!sess) { 7360 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 7361 7362 sess = qlt_make_local_sess(vha, s_id); 7363 /* sess has got an extra creation ref */ 7364 7365 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 7366 if (!sess) 7367 goto out_term2; 7368 } else { 7369 if (sess->deleted) { 7370 sess = NULL; 7371 goto out_term2; 7372 } 7373 7374 if (!kref_get_unless_zero(&sess->sess_kref)) { 7375 ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, 7376 "%s: kref_get fail %8phC \n", 7377 __func__, sess->port_name); 7378 sess = NULL; 7379 goto out_term2; 7380 } 7381 } 7382 7383 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 7384 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 7385 7386 ha->tgt.tgt_ops->put_sess(sess); 7387 7388 if (rc != 0) 7389 goto out_term; 7390 return; 7391 7392out_term2: 7393 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 7394 7395out_term: 7396 spin_lock_irqsave(&ha->hardware_lock, flags); 7397 qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, 7398 FCP_TMF_REJECTED, false); 7399 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7400} 7401 7402static void qlt_sess_work_fn(struct work_struct *work) 7403{ 7404 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 7405 struct scsi_qla_host *vha = tgt->vha; 7406 unsigned long flags; 7407 7408 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 7409 7410 spin_lock_irqsave(&tgt->sess_work_lock, flags); 7411 while (!list_empty(&tgt->sess_works_list)) { 7412 struct qla_tgt_sess_work_param *prm = list_entry( 7413 tgt->sess_works_list.next, typeof(*prm), 7414 sess_works_list_entry); 7415 7416 /* 7417 * This work can be scheduled on several CPUs at time, so we 7418 * must delete the entry to eliminate double processing 7419 */ 7420 list_del(&prm->sess_works_list_entry); 7421 7422 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 7423 7424 switch (prm->type) { 7425 case QLA_TGT_SESS_WORK_ABORT: 7426 qlt_abort_work(tgt, prm); 7427 break; 7428 default: 7429 BUG_ON(1); 7430 break; 7431 } 7432 7433 spin_lock_irqsave(&tgt->sess_work_lock, flags); 7434 7435 kfree(prm); 7436 } 7437 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 7438} 7439 7440/* Must be called under tgt_host_action_mutex */ 7441int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 7442{ 7443 struct qla_tgt *tgt; 7444 int rc, i; 7445 struct qla_qpair_hint *h; 7446 7447 if (!QLA_TGT_MODE_ENABLED()) 7448 return 0; 7449 7450 if (!IS_TGT_MODE_CAPABLE(ha)) { 7451 ql_log(ql_log_warn, base_vha, 0xe070, 7452 "This adapter does not support target mode.\n"); 7453 return 0; 7454 } 7455 7456 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 7457 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 7458 7459 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 7460 7461 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 7462 if (!tgt) { 7463 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 7464 "Unable to allocate struct qla_tgt\n"); 7465 return -ENOMEM; 7466 } 7467 7468 tgt->qphints = kcalloc(ha->max_qpairs + 1, 7469 sizeof(struct qla_qpair_hint), 7470 GFP_KERNEL); 7471 if (!tgt->qphints) { 7472 kfree(tgt); 7473 ql_log(ql_log_warn, base_vha, 0x0197, 7474 "Unable to allocate qpair hints.\n"); 7475 return -ENOMEM; 7476 } 7477 7478 qla2xxx_driver_template.supported_mode |= MODE_TARGET; 7479 7480 rc = btree_init64(&tgt->lun_qpair_map); 7481 if (rc) { 7482 kfree(tgt->qphints); 7483 kfree(tgt); 7484 ql_log(ql_log_info, base_vha, 0x0198, 7485 "Unable to initialize lun_qpair_map btree\n"); 7486 return -EIO; 7487 } 7488 h = &tgt->qphints[0]; 7489 h->qpair = ha->base_qpair; 7490 INIT_LIST_HEAD(&h->hint_elem); 7491 h->cpuid = ha->base_qpair->cpuid; 7492 list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); 7493 7494 for (i = 0; i < ha->max_qpairs; i++) { 7495 unsigned long flags; 7496 7497 struct qla_qpair *qpair = ha->queue_pair_map[i]; 7498 7499 h = &tgt->qphints[i + 1]; 7500 INIT_LIST_HEAD(&h->hint_elem); 7501 if (qpair) { 7502 h->qpair = qpair; 7503 spin_lock_irqsave(qpair->qp_lock_ptr, flags); 7504 list_add_tail(&h->hint_elem, &qpair->hints_list); 7505 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); 7506 h->cpuid = qpair->cpuid; 7507 } 7508 } 7509 7510 tgt->ha = ha; 7511 tgt->vha = base_vha; 7512 init_waitqueue_head(&tgt->waitQ); 7513 spin_lock_init(&tgt->sess_work_lock); 7514 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 7515 INIT_LIST_HEAD(&tgt->sess_works_list); 7516 spin_lock_init(&tgt->srr_lock); 7517 INIT_LIST_HEAD(&tgt->srr_list); 7518 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work); 7519 atomic_set(&tgt->tgt_global_resets_count, 0); 7520 7521 base_vha->vha_tgt.qla_tgt = tgt; 7522 7523 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 7524 "qla_target(%d): using 64 Bit PCI addressing", 7525 base_vha->vp_idx); 7526 /* 3 is reserved */ 7527 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 7528 7529 mutex_lock(&qla_tgt_mutex); 7530 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 7531 mutex_unlock(&qla_tgt_mutex); 7532 7533 if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) 7534 ha->tgt.tgt_ops->add_target(base_vha); 7535 7536 return 0; 7537} 7538 7539/* Must be called under tgt_host_action_mutex */ 7540int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 7541{ 7542 if (!vha->vha_tgt.qla_tgt) 7543 return 0; 7544 7545 if (vha->fc_vport) { 7546 qlt_release(vha->vha_tgt.qla_tgt); 7547 return 0; 7548 } 7549 7550 /* free left over qfull cmds */ 7551 qlt_init_term_exchange(vha); 7552 7553 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 7554 vha->host_no, ha); 7555 qlt_release(vha->vha_tgt.qla_tgt); 7556 7557 return 0; 7558} 7559 7560void qla_remove_hostmap(struct qla_hw_data *ha) 7561{ 7562 struct scsi_qla_host *node; 7563 u32 key = 0; 7564 7565 btree_for_each_safe32(&ha->host_map, key, node) 7566 btree_remove32(&ha->host_map, key); 7567 7568 btree_destroy32(&ha->host_map); 7569} 7570 7571static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 7572 unsigned char *b) 7573{ 7574 pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); 7575 pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); 7576 put_unaligned_be64(wwpn, b); 7577 pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); 7578} 7579 7580/** 7581 * qlt_lport_register - register lport with external module 7582 * 7583 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 7584 * @phys_wwpn: physical port WWPN 7585 * @npiv_wwpn: NPIV WWPN 7586 * @npiv_wwnn: NPIV WWNN 7587 * @callback: lport initialization callback for tcm_qla2xxx code 7588 */ 7589int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 7590 u64 npiv_wwpn, u64 npiv_wwnn, 7591 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 7592{ 7593 struct qla_tgt *tgt; 7594 struct scsi_qla_host *vha; 7595 struct qla_hw_data *ha; 7596 struct Scsi_Host *host; 7597 unsigned long flags; 7598 int rc; 7599 u8 b[WWN_SIZE]; 7600 7601 mutex_lock(&qla_tgt_mutex); 7602 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 7603 vha = tgt->vha; 7604 ha = vha->hw; 7605 7606 host = vha->host; 7607 if (!host) 7608 continue; 7609 7610 if (!(host->hostt->supported_mode & MODE_TARGET)) 7611 continue; 7612 7613 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 7614 continue; 7615 7616 spin_lock_irqsave(&ha->hardware_lock, flags); 7617 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 7618 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 7619 host->host_no); 7620 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7621 continue; 7622 } 7623 if (tgt->tgt_stop) { 7624 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 7625 host->host_no); 7626 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7627 continue; 7628 } 7629 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7630 7631 if (!scsi_host_get(host)) { 7632 ql_dbg(ql_dbg_tgt, vha, 0xe068, 7633 "Unable to scsi_host_get() for" 7634 " qla2xxx scsi_host\n"); 7635 continue; 7636 } 7637 qlt_lport_dump(vha, phys_wwpn, b); 7638 7639 if (memcmp(vha->port_name, b, WWN_SIZE)) { 7640 scsi_host_put(host); 7641 continue; 7642 } 7643 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 7644 if (rc != 0) 7645 scsi_host_put(host); 7646 7647 mutex_unlock(&qla_tgt_mutex); 7648 return rc; 7649 } 7650 mutex_unlock(&qla_tgt_mutex); 7651 7652 return -ENODEV; 7653} 7654EXPORT_SYMBOL(qlt_lport_register); 7655 7656/** 7657 * qlt_lport_deregister - Degister lport 7658 * 7659 * @vha: Registered scsi_qla_host pointer 7660 */ 7661void qlt_lport_deregister(struct scsi_qla_host *vha) 7662{ 7663 struct qla_hw_data *ha = vha->hw; 7664 struct Scsi_Host *sh = vha->host; 7665 /* 7666 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 7667 */ 7668 vha->vha_tgt.target_lport_ptr = NULL; 7669 ha->tgt.tgt_ops = NULL; 7670 /* 7671 * Release the Scsi_Host reference for the underlying qla2xxx host 7672 */ 7673 scsi_host_put(sh); 7674} 7675EXPORT_SYMBOL(qlt_lport_deregister); 7676 7677/* Must be called under HW lock */ 7678void qlt_set_mode(struct scsi_qla_host *vha) 7679{ 7680 switch (vha->qlini_mode) { 7681 case QLA2XXX_INI_MODE_DISABLED: 7682 case QLA2XXX_INI_MODE_EXCLUSIVE: 7683 vha->host->active_mode = MODE_TARGET; 7684 break; 7685 case QLA2XXX_INI_MODE_ENABLED: 7686 vha->host->active_mode = MODE_INITIATOR; 7687 break; 7688 case QLA2XXX_INI_MODE_DUAL: 7689 vha->host->active_mode = MODE_DUAL; 7690 break; 7691 default: 7692 break; 7693 } 7694} 7695 7696/* Must be called under HW lock */ 7697static void qlt_clear_mode(struct scsi_qla_host *vha) 7698{ 7699 switch (vha->qlini_mode) { 7700 case QLA2XXX_INI_MODE_DISABLED: 7701 vha->host->active_mode = MODE_UNKNOWN; 7702 break; 7703 case QLA2XXX_INI_MODE_EXCLUSIVE: 7704 vha->host->active_mode = MODE_INITIATOR; 7705 break; 7706 case QLA2XXX_INI_MODE_ENABLED: 7707 case QLA2XXX_INI_MODE_DUAL: 7708 vha->host->active_mode = MODE_INITIATOR; 7709 break; 7710 default: 7711 break; 7712 } 7713} 7714 7715/* 7716 * qla_tgt_enable_vha - NO LOCK HELD 7717 * 7718 * host_reset, bring up w/ Target Mode Enabled 7719 */ 7720void 7721qlt_enable_vha(struct scsi_qla_host *vha) 7722{ 7723 struct qla_hw_data *ha = vha->hw; 7724 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 7725 unsigned long flags; 7726 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 7727 7728 if (!tgt) { 7729 ql_dbg(ql_dbg_tgt, vha, 0xe069, 7730 "Unable to locate qla_tgt pointer from" 7731 " struct qla_hw_data\n"); 7732 dump_stack(); 7733 return; 7734 } 7735 if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) 7736 return; 7737 7738 if (ha->tgt.num_act_qpairs > ha->max_qpairs) 7739 ha->tgt.num_act_qpairs = ha->max_qpairs; 7740 spin_lock_irqsave(&ha->hardware_lock, flags); 7741 tgt->tgt_stopped = 0; 7742 qlt_set_mode(vha); 7743 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7744 7745 mutex_lock(&ha->optrom_mutex); 7746 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, 7747 "%s.\n", __func__); 7748 if (vha->vp_idx) { 7749 qla24xx_disable_vp(vha); 7750 qla24xx_enable_vp(vha); 7751 } else { 7752 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 7753 qla2xxx_wake_dpc(base_vha); 7754 WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != 7755 QLA_SUCCESS); 7756 } 7757 mutex_unlock(&ha->optrom_mutex); 7758} 7759EXPORT_SYMBOL(qlt_enable_vha); 7760 7761/* 7762 * qla_tgt_disable_vha - NO LOCK HELD 7763 * 7764 * Disable Target Mode and reset the adapter 7765 */ 7766static void qlt_disable_vha(struct scsi_qla_host *vha) 7767{ 7768 struct qla_hw_data *ha = vha->hw; 7769 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 7770 unsigned long flags; 7771 7772 if (!tgt) { 7773 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 7774 "Unable to locate qla_tgt pointer from" 7775 " struct qla_hw_data\n"); 7776 dump_stack(); 7777 return; 7778 } 7779 7780 spin_lock_irqsave(&ha->hardware_lock, flags); 7781 qlt_clear_mode(vha); 7782 spin_unlock_irqrestore(&ha->hardware_lock, flags); 7783 7784 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 7785 qla2xxx_wake_dpc(vha); 7786 7787 /* 7788 * We are expecting the offline state. 7789 * QLA_FUNCTION_FAILED means that adapter is offline. 7790 */ 7791 if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) 7792 ql_dbg(ql_dbg_tgt, vha, 0xe081, 7793 "adapter is offline\n"); 7794} 7795 7796/* 7797 * Called from qla_init.c:qla24xx_vport_create() contex to setup 7798 * the target mode specific struct scsi_qla_host and struct qla_hw_data 7799 * members. 7800 */ 7801void 7802qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 7803{ 7804 vha->vha_tgt.qla_tgt = NULL; 7805 7806 mutex_init(&vha->vha_tgt.tgt_mutex); 7807 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 7808 7809 INIT_LIST_HEAD(&vha->unknown_atio_list); 7810 INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn); 7811 7812 qlt_clear_mode(vha); 7813 7814 /* 7815 * NOTE: Currently the value is kept the same for <24xx and 7816 * >=24xx ISPs. If it is necessary to change it, 7817 * the check should be added for specific ISPs, 7818 * assigning the value appropriately. 7819 */ 7820 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 7821 7822 qlt_add_target(ha, vha); 7823} 7824 7825u8 7826qlt_rff_id(struct scsi_qla_host *vha) 7827{ 7828 u8 fc4_feature = 0; 7829 /* 7830 * FC-4 Feature bit 0 indicates target functionality to the name server. 7831 */ 7832 if (qla_tgt_mode_enabled(vha)) { 7833 fc4_feature = BIT_0; 7834 } else if (qla_ini_mode_enabled(vha)) { 7835 fc4_feature = BIT_1; 7836 } else if (qla_dual_mode_enabled(vha)) 7837 fc4_feature = BIT_0 | BIT_1; 7838 7839 return fc4_feature; 7840} 7841 7842/* 7843 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 7844 * @ha: HA context 7845 * 7846 * Beginning of ATIO ring has initialization control block already built 7847 * by nvram config routine. 7848 * 7849 * Returns 0 on success. 7850 */ 7851void 7852qlt_init_atio_q_entries(struct scsi_qla_host *vha) 7853{ 7854 struct qla_hw_data *ha = vha->hw; 7855 uint16_t cnt; 7856 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 7857 7858 if (qla_ini_mode_enabled(vha)) 7859 return; 7860 7861 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 7862 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 7863 pkt++; 7864 } 7865 7866} 7867 7868/* 7869 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 7870 * @ha: SCSI driver HA context 7871 */ 7872void 7873qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 7874{ 7875 struct qla_hw_data *ha = vha->hw; 7876 struct atio_from_isp *pkt; 7877 int cnt, i; 7878 7879 if (!ha->flags.fw_started) 7880 return; 7881 7882 while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || 7883 fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { 7884 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 7885 cnt = pkt->u.raw.entry_count; 7886 7887 if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { 7888 /* 7889 * This packet is corrupted. The header + payload 7890 * can not be trusted. There is no point in passing 7891 * it further up. 7892 */ 7893 ql_log(ql_log_warn, vha, 0xd03c, 7894 "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", 7895 &pkt->u.isp24.fcp_hdr.s_id, 7896 be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), 7897 pkt->u.isp24.exchange_addr, pkt); 7898 7899 adjust_corrupted_atio(pkt); 7900 qlt_send_term_exchange(ha->base_qpair, NULL, pkt, 7901 ha_locked); 7902 } else { 7903 qlt_24xx_atio_pkt_all_vps(vha, 7904 (struct atio_from_isp *)pkt, ha_locked); 7905 } 7906 7907 for (i = 0; i < cnt; i++) { 7908 ha->tgt.atio_ring_index++; 7909 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 7910 ha->tgt.atio_ring_index = 0; 7911 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 7912 } else 7913 ha->tgt.atio_ring_ptr++; 7914 7915 pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); 7916 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 7917 } 7918 wmb(); 7919 } 7920 7921 /* Adjust ring index */ 7922 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 7923} 7924 7925void 7926qlt_24xx_config_rings(struct scsi_qla_host *vha) 7927{ 7928 struct qla_hw_data *ha = vha->hw; 7929 struct qla_msix_entry *msix = &ha->msix_entries[2]; 7930 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 7931 7932 if (!QLA_TGT_MODE_ENABLED()) 7933 return; 7934 7935 wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); 7936 wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); 7937 rd_reg_dword(ISP_ATIO_Q_OUT(vha)); 7938 7939 if (ha->flags.msix_enabled) { 7940 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7941 icb->msix_atio = cpu_to_le16(msix->entry); 7942 icb->firmware_options_2 &= cpu_to_le32(~BIT_26); 7943 ql_dbg(ql_dbg_init, vha, 0xf072, 7944 "Registering ICB vector 0x%x for atio que.\n", 7945 msix->entry); 7946 } 7947 } else { 7948 /* INTx|MSI */ 7949 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 7950 icb->msix_atio = 0; 7951 icb->firmware_options_2 |= cpu_to_le32(BIT_26); 7952 ql_dbg(ql_dbg_init, vha, 0xf072, 7953 "%s: Use INTx for ATIOQ.\n", __func__); 7954 } 7955 } 7956} 7957 7958void 7959qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 7960{ 7961 struct qla_hw_data *ha = vha->hw; 7962 u32 tmp; 7963 7964 if (!QLA_TGT_MODE_ENABLED()) 7965 return; 7966 7967 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 7968 if (!ha->tgt.saved_set) { 7969 /* We save only once */ 7970 ha->tgt.saved_exchange_count = nv->exchange_count; 7971 ha->tgt.saved_firmware_options_1 = 7972 nv->firmware_options_1; 7973 ha->tgt.saved_firmware_options_2 = 7974 nv->firmware_options_2; 7975 ha->tgt.saved_firmware_options_3 = 7976 nv->firmware_options_3; 7977 ha->tgt.saved_set = 1; 7978 } 7979 7980 if (qla_tgt_mode_enabled(vha)) 7981 nv->exchange_count = cpu_to_le16(0xFFFF); 7982 else /* dual */ 7983 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 7984 7985 /* Enable target mode */ 7986 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 7987 7988 /* Disable ini mode, if requested */ 7989 if (qla_tgt_mode_enabled(vha)) 7990 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 7991 7992 /* Disable Full Login after LIP */ 7993 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 7994 /* Enable initial LIP */ 7995 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 7996 if (ql2xtgt_tape_enable) 7997 /* Enable FC Tape support */ 7998 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 7999 else 8000 /* Disable FC Tape support */ 8001 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 8002 8003 /* Disable Full Login after LIP */ 8004 nv->host_p &= cpu_to_le32(~BIT_10); 8005 8006 /* 8007 * clear BIT 15 explicitly as we have seen at least 8008 * a couple of instances where this was set and this 8009 * was causing the firmware to not be initialized. 8010 */ 8011 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 8012 /* Enable target PRLI control */ 8013 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 8014 8015 if (IS_QLA25XX(ha)) { 8016 /* Change Loop-prefer to Pt-Pt */ 8017 tmp = ~(BIT_4|BIT_5|BIT_6); 8018 nv->firmware_options_2 &= cpu_to_le32(tmp); 8019 tmp = P2P << 4; 8020 nv->firmware_options_2 |= cpu_to_le32(tmp); 8021 } 8022 } else { 8023 if (ha->tgt.saved_set) { 8024 nv->exchange_count = ha->tgt.saved_exchange_count; 8025 nv->firmware_options_1 = 8026 ha->tgt.saved_firmware_options_1; 8027 nv->firmware_options_2 = 8028 ha->tgt.saved_firmware_options_2; 8029 nv->firmware_options_3 = 8030 ha->tgt.saved_firmware_options_3; 8031 } 8032 return; 8033 } 8034 8035 if (ha->base_qpair->enable_class_2) { 8036 if (vha->flags.init_done) 8037 fc_host_supported_classes(vha->host) = 8038 FC_COS_CLASS2 | FC_COS_CLASS3; 8039 8040 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 8041 } else { 8042 if (vha->flags.init_done) 8043 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 8044 8045 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 8046 } 8047} 8048 8049void 8050qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 8051 struct init_cb_24xx *icb) 8052{ 8053 struct qla_hw_data *ha = vha->hw; 8054 8055 if (!QLA_TGT_MODE_ENABLED()) 8056 return; 8057 8058 if (ha->tgt.node_name_set) { 8059 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 8060 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 8061 } 8062} 8063 8064void 8065qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 8066{ 8067 struct qla_hw_data *ha = vha->hw; 8068 u32 tmp; 8069 8070 if (!QLA_TGT_MODE_ENABLED()) 8071 return; 8072 8073 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) { 8074 if (!ha->tgt.saved_set) { 8075 /* We save only once */ 8076 ha->tgt.saved_exchange_count = nv->exchange_count; 8077 ha->tgt.saved_firmware_options_1 = 8078 nv->firmware_options_1; 8079 ha->tgt.saved_firmware_options_2 = 8080 nv->firmware_options_2; 8081 ha->tgt.saved_firmware_options_3 = 8082 nv->firmware_options_3; 8083 ha->tgt.saved_set = 1; 8084 } 8085 8086 if (qla_tgt_mode_enabled(vha)) 8087 nv->exchange_count = cpu_to_le16(0xFFFF); 8088 else /* dual */ 8089 nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); 8090 8091 /* Enable target mode */ 8092 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 8093 8094 /* Disable ini mode, if requested */ 8095 if (qla_tgt_mode_enabled(vha)) 8096 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 8097 /* Disable Full Login after LIP */ 8098 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 8099 /* Enable initial LIP */ 8100 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 8101 /* 8102 * clear BIT 15 explicitly as we have seen at 8103 * least a couple of instances where this was set 8104 * and this was causing the firmware to not be 8105 * initialized. 8106 */ 8107 nv->firmware_options_1 &= cpu_to_le32(~BIT_15); 8108 if (ql2xtgt_tape_enable) 8109 /* Enable FC tape support */ 8110 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 8111 else 8112 /* Disable FC tape support */ 8113 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 8114 8115 /* Disable Full Login after LIP */ 8116 nv->host_p &= cpu_to_le32(~BIT_10); 8117 /* Enable target PRLI control */ 8118 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 8119 8120 /* Change Loop-prefer to Pt-Pt */ 8121 tmp = ~(BIT_4|BIT_5|BIT_6); 8122 nv->firmware_options_2 &= cpu_to_le32(tmp); 8123 tmp = P2P << 4; 8124 nv->firmware_options_2 |= cpu_to_le32(tmp); 8125 } else { 8126 if (ha->tgt.saved_set) { 8127 nv->exchange_count = ha->tgt.saved_exchange_count; 8128 nv->firmware_options_1 = 8129 ha->tgt.saved_firmware_options_1; 8130 nv->firmware_options_2 = 8131 ha->tgt.saved_firmware_options_2; 8132 nv->firmware_options_3 = 8133 ha->tgt.saved_firmware_options_3; 8134 } 8135 return; 8136 } 8137 8138 if (ha->base_qpair->enable_class_2) { 8139 if (vha->flags.init_done) 8140 fc_host_supported_classes(vha->host) = 8141 FC_COS_CLASS2 | FC_COS_CLASS3; 8142 8143 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 8144 } else { 8145 if (vha->flags.init_done) 8146 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 8147 8148 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 8149 } 8150} 8151 8152void 8153qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 8154 struct init_cb_81xx *icb) 8155{ 8156 struct qla_hw_data *ha = vha->hw; 8157 8158 if (!QLA_TGT_MODE_ENABLED()) 8159 return; 8160 8161 if (ha->tgt.node_name_set) { 8162 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 8163 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 8164 } 8165} 8166 8167/* Update any settings that depend on ha->fw_*_version. */ 8168void 8169qlt_config_nvram_with_fw_version(struct scsi_qla_host *vha) 8170{ 8171 struct qla_hw_data *ha = vha->hw; 8172 8173 if (!QLA_TGT_MODE_ENABLED()) 8174 return; 8175 8176 if (ql2xtgt_tape_enable && qlt_has_sler_fw_bug(ha)) { 8177 ql_log(ql_log_warn, vha, 0x11036, 8178 "WARNING: ignoring ql2xtgt_tape_enable due to buggy HBA firmware; please upgrade FW\n"); 8179 8180 /* Disable FC Tape support */ 8181 if (ha->isp_ops->nvram_config == qla81xx_nvram_config) { 8182 struct init_cb_81xx *icb = 8183 (struct init_cb_81xx *)ha->init_cb; 8184 icb->firmware_options_2 &= cpu_to_le32(~BIT_12); 8185 } else { 8186 struct init_cb_24xx *icb = 8187 (struct init_cb_24xx *)ha->init_cb; 8188 icb->firmware_options_2 &= cpu_to_le32(~BIT_12); 8189 } 8190 } 8191} 8192 8193void 8194qlt_modify_vp_config(struct scsi_qla_host *vha, 8195 struct vp_config_entry_24xx *vpmod) 8196{ 8197 /* enable target mode. Bit5 = 1 => disable */ 8198 if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) 8199 vpmod->options_idx1 &= ~BIT_5; 8200 8201 /* Disable ini mode, if requested. bit4 = 1 => disable */ 8202 if (qla_tgt_mode_enabled(vha)) 8203 vpmod->options_idx1 &= ~BIT_4; 8204} 8205 8206void 8207qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 8208{ 8209 mutex_init(&base_vha->vha_tgt.tgt_mutex); 8210 if (!QLA_TGT_MODE_ENABLED()) 8211 return; 8212 8213 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { 8214 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 8215 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 8216 } else { 8217 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 8218 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 8219 } 8220 8221 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 8222 8223 INIT_LIST_HEAD(&base_vha->unknown_atio_list); 8224 INIT_DELAYED_WORK(&base_vha->unknown_atio_work, 8225 qlt_unknown_atio_work_fn); 8226 8227 qlt_clear_mode(base_vha); 8228 8229 qla_update_vp_map(base_vha, SET_VP_IDX); 8230} 8231 8232irqreturn_t 8233qla83xx_msix_atio_q(int irq, void *dev_id) 8234{ 8235 struct rsp_que *rsp; 8236 scsi_qla_host_t *vha; 8237 struct qla_hw_data *ha; 8238 unsigned long flags; 8239 8240 rsp = (struct rsp_que *) dev_id; 8241 ha = rsp->hw; 8242 vha = pci_get_drvdata(ha->pdev); 8243 8244 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 8245 8246 qlt_24xx_process_atio_queue(vha, 0); 8247 8248 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 8249 8250 return IRQ_HANDLED; 8251} 8252 8253static void 8254qlt_handle_abts_recv_work(struct work_struct *work) 8255{ 8256 struct qla_tgt_sess_op *op = container_of(work, 8257 struct qla_tgt_sess_op, work); 8258 scsi_qla_host_t *vha = op->vha; 8259 struct qla_hw_data *ha = vha->hw; 8260 unsigned long flags; 8261 8262 if (qla2x00_reset_active(vha) || 8263 (op->chip_reset != ha->base_qpair->chip_reset)) 8264 return; 8265 8266 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 8267 qlt_24xx_process_atio_queue(vha, 0); 8268 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 8269 8270 spin_lock_irqsave(&ha->hardware_lock, flags); 8271 qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); 8272 spin_unlock_irqrestore(&ha->hardware_lock, flags); 8273 8274 kfree(op); 8275} 8276 8277void 8278qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, 8279 response_t *pkt) 8280{ 8281 struct qla_tgt_sess_op *op; 8282 8283 op = kzalloc(sizeof(*op), GFP_ATOMIC); 8284 8285 if (!op) { 8286 /* do not reach for ATIO queue here. This is best effort err 8287 * recovery at this point. 8288 */ 8289 qlt_response_pkt_all_vps(vha, rsp, pkt); 8290 return; 8291 } 8292 8293 memcpy(&op->atio, pkt, sizeof(*pkt)); 8294 op->vha = vha; 8295 op->chip_reset = vha->hw->base_qpair->chip_reset; 8296 op->rsp = rsp; 8297 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 8298 queue_work(qla_tgt_wq, &op->work); 8299 return; 8300} 8301 8302int 8303qlt_mem_alloc(struct qla_hw_data *ha) 8304{ 8305 if (!QLA_TGT_MODE_ENABLED()) 8306 return 0; 8307 8308 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 8309 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 8310 &ha->tgt.atio_dma, GFP_KERNEL); 8311 if (!ha->tgt.atio_ring) { 8312 return -ENOMEM; 8313 } 8314 return 0; 8315} 8316 8317void 8318qlt_mem_free(struct qla_hw_data *ha) 8319{ 8320 if (!QLA_TGT_MODE_ENABLED()) 8321 return; 8322 8323 if (ha->tgt.atio_ring) { 8324 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 8325 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 8326 ha->tgt.atio_dma); 8327 } 8328 ha->tgt.atio_ring = NULL; 8329 ha->tgt.atio_dma = 0; 8330} 8331 8332static int __init qlt_parse_ini_mode(void) 8333{ 8334 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 8335 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 8336 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 8337 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 8338 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 8339 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 8340 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0) 8341 ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL; 8342 else 8343 return false; 8344 8345 return true; 8346} 8347 8348int __init qlt_init(void) 8349{ 8350 int ret; 8351 8352 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 8353 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 8354 8355 if (!qlt_parse_ini_mode()) { 8356 ql_log(ql_log_fatal, NULL, 0xe06b, 8357 "qlt_parse_ini_mode() failed\n"); 8358 return -EINVAL; 8359 } 8360 8361 if (!QLA_TGT_MODE_ENABLED()) 8362 return 0; 8363 8364 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 8365 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 8366 qla_tgt_mgmt_cmd), 0, NULL); 8367 if (!qla_tgt_mgmt_cmd_cachep) { 8368 ql_log(ql_log_fatal, NULL, 0xd04b, 8369 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 8370 return -ENOMEM; 8371 } 8372 8373 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 8374 sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), 8375 0, NULL); 8376 8377 if (!qla_tgt_plogi_cachep) { 8378 ql_log(ql_log_fatal, NULL, 0xe06d, 8379 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 8380 ret = -ENOMEM; 8381 goto out_mgmt_cmd_cachep; 8382 } 8383 8384 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 8385 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 8386 if (!qla_tgt_mgmt_cmd_mempool) { 8387 ql_log(ql_log_fatal, NULL, 0xe06e, 8388 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 8389 ret = -ENOMEM; 8390 goto out_plogi_cachep; 8391 } 8392 8393 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 8394 if (!qla_tgt_wq) { 8395 ql_log(ql_log_fatal, NULL, 0xe06f, 8396 "alloc_workqueue for qla_tgt_wq failed\n"); 8397 ret = -ENOMEM; 8398 goto out_cmd_mempool; 8399 } 8400 /* 8401 * Return 1 to signal that initiator-mode is being disabled 8402 */ 8403 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 8404 8405out_cmd_mempool: 8406 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 8407out_plogi_cachep: 8408 kmem_cache_destroy(qla_tgt_plogi_cachep); 8409out_mgmt_cmd_cachep: 8410 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 8411 return ret; 8412} 8413 8414void qlt_exit(void) 8415{ 8416 if (!QLA_TGT_MODE_ENABLED()) 8417 return; 8418 8419 destroy_workqueue(qla_tgt_wq); 8420 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 8421 kmem_cache_destroy(qla_tgt_plogi_cachep); 8422 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 8423}
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