1/* 2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 3 * 4 * based on qla2x00t.c code: 5 * 6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 7 * Copyright (C) 2004 - 2005 Leonid Stoljar 8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 9 * Copyright (C) 2006 - 2010 ID7 Ltd. 10 * 11 * Forward port and refactoring to modern qla2xxx and target/configfs 12 * 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation, version 2 18 * of the License. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 */ 25 26#include <linux/module.h> 27#include <linux/init.h> 28#include <linux/types.h> 29#include <linux/blkdev.h> 30#include <linux/interrupt.h> 31#include <linux/pci.h> 32#include <linux/delay.h> 33#include <linux/list.h> 34#include <linux/workqueue.h> 35#include <asm/unaligned.h> 36#include <scsi/scsi.h> 37#include <scsi/scsi_host.h> 38#include <scsi/scsi_tcq.h> 39#include <target/target_core_base.h> 40#include <target/target_core_fabric.h> 41 42#include "qla_def.h" 43#include "qla_target.h" 44 45static int ql2xtgt_tape_enable; 46module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 47MODULE_PARM_DESC(ql2xtgt_tape_enable, 48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 49 50static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 51module_param(qlini_mode, charp, S_IRUGO); 52MODULE_PARM_DESC(qlini_mode, 53 "Determines when initiator mode will be enabled. Possible values: " 54 "\"exclusive\" - initiator mode will be enabled on load, " 55 "disabled on enabling target mode and then on disabling target mode " 56 "enabled back; " 57 "\"disabled\" - initiator mode will never be enabled; " 58 "\"enabled\" (default) - initiator mode will always stay enabled."); 59 60int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 61 62static int temp_sam_status = SAM_STAT_BUSY; 63 64/* 65 * From scsi/fc/fc_fcp.h 66 */ 67enum fcp_resp_rsp_codes { 68 FCP_TMF_CMPL = 0, 69 FCP_DATA_LEN_INVALID = 1, 70 FCP_CMND_FIELDS_INVALID = 2, 71 FCP_DATA_PARAM_MISMATCH = 3, 72 FCP_TMF_REJECTED = 4, 73 FCP_TMF_FAILED = 5, 74 FCP_TMF_INVALID_LUN = 9, 75}; 76 77/* 78 * fc_pri_ta from scsi/fc/fc_fcp.h 79 */ 80#define FCP_PTA_SIMPLE 0 /* simple task attribute */ 81#define FCP_PTA_HEADQ 1 /* head of queue task attribute */ 82#define FCP_PTA_ORDERED 2 /* ordered task attribute */ 83#define FCP_PTA_ACA 4 /* auto. contingent allegiance */ 84#define FCP_PTA_MASK 7 /* mask for task attribute field */ 85#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ 86#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ 87 88/* 89 * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which 90 * must be called under HW lock and could unlock/lock it inside. 91 * It isn't an issue, since in the current implementation on the time when 92 * those functions are called: 93 * 94 * - Either context is IRQ and only IRQ handler can modify HW data, 95 * including rings related fields, 96 * 97 * - Or access to target mode variables from struct qla_tgt doesn't 98 * cross those functions boundaries, except tgt_stop, which 99 * additionally protected by irq_cmd_count. 100 */ 101/* Predefs for callbacks handed to qla2xxx LLD */ 102static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 103 struct atio_from_isp *pkt); 104static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); 105static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, 106 int fn, void *iocb, int flags); 107static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd 108 *cmd, struct atio_from_isp *atio, int ha_locked); 109static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha, 110 struct qla_tgt_srr_imm *imm, int ha_lock); 111static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, 112 struct qla_tgt_cmd *cmd); 113static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 114 struct atio_from_isp *atio, uint16_t status, int qfull); 115static void qlt_disable_vha(struct scsi_qla_host *vha); 116static void qlt_clear_tgt_db(struct qla_tgt *tgt); 117static void qlt_send_notify_ack(struct scsi_qla_host *vha, 118 struct imm_ntfy_from_isp *ntfy, 119 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 120 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); 121/* 122 * Global Variables 123 */ 124static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 125static mempool_t *qla_tgt_mgmt_cmd_mempool; 126static struct workqueue_struct *qla_tgt_wq; 127static DEFINE_MUTEX(qla_tgt_mutex); 128static LIST_HEAD(qla_tgt_glist); 129 130/* This API intentionally takes dest as a parameter, rather than returning 131 * int value to avoid caller forgetting to issue wmb() after the store */ 132void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 133{ 134 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 135 *dest = atomic_inc_return(&base_vha->generation_tick); 136 /* memory barrier */ 137 wmb(); 138} 139 140/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */ 141static struct qla_tgt_sess *qlt_find_sess_by_port_name( 142 struct qla_tgt *tgt, 143 const uint8_t *port_name) 144{ 145 struct qla_tgt_sess *sess; 146 147 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) { 148 if (!memcmp(sess->port_name, port_name, WWN_SIZE)) 149 return sess; 150 } 151 152 return NULL; 153} 154 155/* Might release hw lock, then reaquire!! */ 156static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 157{ 158 /* Send marker if required */ 159 if (unlikely(vha->marker_needed != 0)) { 160 int rc = qla2x00_issue_marker(vha, vha_locked); 161 if (rc != QLA_SUCCESS) { 162 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 163 "qla_target(%d): issue_marker() failed\n", 164 vha->vp_idx); 165 } 166 return rc; 167 } 168 return QLA_SUCCESS; 169} 170 171static inline 172struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 173 uint8_t *d_id) 174{ 175 struct qla_hw_data *ha = vha->hw; 176 uint8_t vp_idx; 177 178 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0])) 179 return NULL; 180 181 if (vha->d_id.b.al_pa == d_id[2]) 182 return vha; 183 184 BUG_ON(ha->tgt.tgt_vp_map == NULL); 185 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx; 186 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 187 return ha->tgt.tgt_vp_map[vp_idx].vha; 188 189 return NULL; 190} 191 192static inline 193struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 194 uint16_t vp_idx) 195{ 196 struct qla_hw_data *ha = vha->hw; 197 198 if (vha->vp_idx == vp_idx) 199 return vha; 200 201 BUG_ON(ha->tgt.tgt_vp_map == NULL); 202 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 203 return ha->tgt.tgt_vp_map[vp_idx].vha; 204 205 return NULL; 206} 207 208static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 209{ 210 unsigned long flags; 211 212 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 213 214 vha->hw->tgt.num_pend_cmds++; 215 if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds) 216 vha->hw->qla_stats.stat_max_pend_cmds = 217 vha->hw->tgt.num_pend_cmds; 218 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 219} 220static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 221{ 222 unsigned long flags; 223 224 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 225 vha->hw->tgt.num_pend_cmds--; 226 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 227} 228 229static void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 230 struct atio_from_isp *atio) 231{ 232 ql_dbg(ql_dbg_tgt, vha, 0xe072, 233 "%s: qla_target(%d): type %x ox_id %04x\n", 234 __func__, vha->vp_idx, atio->u.raw.entry_type, 235 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 236 237 switch (atio->u.raw.entry_type) { 238 case ATIO_TYPE7: 239 { 240 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 241 atio->u.isp24.fcp_hdr.d_id); 242 if (unlikely(NULL == host)) { 243 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 244 "qla_target(%d): Received ATIO_TYPE7 " 245 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 246 atio->u.isp24.fcp_hdr.d_id[0], 247 atio->u.isp24.fcp_hdr.d_id[1], 248 atio->u.isp24.fcp_hdr.d_id[2]); 249 break; 250 } 251 qlt_24xx_atio_pkt(host, atio); 252 break; 253 } 254 255 case IMMED_NOTIFY_TYPE: 256 { 257 struct scsi_qla_host *host = vha; 258 struct imm_ntfy_from_isp *entry = 259 (struct imm_ntfy_from_isp *)atio; 260 261 if ((entry->u.isp24.vp_index != 0xFF) && 262 (entry->u.isp24.nport_handle != 0xFFFF)) { 263 host = qlt_find_host_by_vp_idx(vha, 264 entry->u.isp24.vp_index); 265 if (unlikely(!host)) { 266 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 267 "qla_target(%d): Received " 268 "ATIO (IMMED_NOTIFY_TYPE) " 269 "with unknown vp_index %d\n", 270 vha->vp_idx, entry->u.isp24.vp_index); 271 break; 272 } 273 } 274 qlt_24xx_atio_pkt(host, atio); 275 break; 276 } 277 278 default: 279 ql_dbg(ql_dbg_tgt, vha, 0xe040, 280 "qla_target(%d): Received unknown ATIO atio " 281 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 282 break; 283 } 284 285 return; 286} 287 288void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt) 289{ 290 switch (pkt->entry_type) { 291 case CTIO_CRC2: 292 ql_dbg(ql_dbg_tgt, vha, 0xe073, 293 "qla_target(%d):%s: CRC2 Response pkt\n", 294 vha->vp_idx, __func__); 295 case CTIO_TYPE7: 296 { 297 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 298 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 299 entry->vp_index); 300 if (unlikely(!host)) { 301 ql_dbg(ql_dbg_tgt, vha, 0xe041, 302 "qla_target(%d): Response pkt (CTIO_TYPE7) " 303 "received, with unknown vp_index %d\n", 304 vha->vp_idx, entry->vp_index); 305 break; 306 } 307 qlt_response_pkt(host, pkt); 308 break; 309 } 310 311 case IMMED_NOTIFY_TYPE: 312 { 313 struct scsi_qla_host *host = vha; 314 struct imm_ntfy_from_isp *entry = 315 (struct imm_ntfy_from_isp *)pkt; 316 317 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 318 if (unlikely(!host)) { 319 ql_dbg(ql_dbg_tgt, vha, 0xe042, 320 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 321 "received, with unknown vp_index %d\n", 322 vha->vp_idx, entry->u.isp24.vp_index); 323 break; 324 } 325 qlt_response_pkt(host, pkt); 326 break; 327 } 328 329 case NOTIFY_ACK_TYPE: 330 { 331 struct scsi_qla_host *host = vha; 332 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 333 334 if (0xFF != entry->u.isp24.vp_index) { 335 host = qlt_find_host_by_vp_idx(vha, 336 entry->u.isp24.vp_index); 337 if (unlikely(!host)) { 338 ql_dbg(ql_dbg_tgt, vha, 0xe043, 339 "qla_target(%d): Response " 340 "pkt (NOTIFY_ACK_TYPE) " 341 "received, with unknown " 342 "vp_index %d\n", vha->vp_idx, 343 entry->u.isp24.vp_index); 344 break; 345 } 346 } 347 qlt_response_pkt(host, pkt); 348 break; 349 } 350 351 case ABTS_RECV_24XX: 352 { 353 struct abts_recv_from_24xx *entry = 354 (struct abts_recv_from_24xx *)pkt; 355 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 356 entry->vp_index); 357 if (unlikely(!host)) { 358 ql_dbg(ql_dbg_tgt, vha, 0xe044, 359 "qla_target(%d): Response pkt " 360 "(ABTS_RECV_24XX) received, with unknown " 361 "vp_index %d\n", vha->vp_idx, entry->vp_index); 362 break; 363 } 364 qlt_response_pkt(host, pkt); 365 break; 366 } 367 368 case ABTS_RESP_24XX: 369 { 370 struct abts_resp_to_24xx *entry = 371 (struct abts_resp_to_24xx *)pkt; 372 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 373 entry->vp_index); 374 if (unlikely(!host)) { 375 ql_dbg(ql_dbg_tgt, vha, 0xe045, 376 "qla_target(%d): Response pkt " 377 "(ABTS_RECV_24XX) received, with unknown " 378 "vp_index %d\n", vha->vp_idx, entry->vp_index); 379 break; 380 } 381 qlt_response_pkt(host, pkt); 382 break; 383 } 384 385 default: 386 qlt_response_pkt(vha, pkt); 387 break; 388 } 389 390} 391 392static void qlt_free_session_done(struct work_struct *work) 393{ 394 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess, 395 free_work); 396 struct qla_tgt *tgt = sess->tgt; 397 struct scsi_qla_host *vha = sess->vha; 398 struct qla_hw_data *ha = vha->hw; 399 unsigned long flags; 400 bool logout_started = false; 401 fc_port_t fcport; 402 403 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 404 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 405 " s_id %02x:%02x:%02x logout %d keep %d plogi %d\n", 406 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 407 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, 408 sess->logout_on_delete, sess->keep_nport_handle, 409 sess->plogi_ack_needed); 410 411 BUG_ON(!tgt); 412 413 if (sess->logout_on_delete) { 414 int rc; 415 416 memset(&fcport, 0, sizeof(fcport)); 417 fcport.loop_id = sess->loop_id; 418 fcport.d_id = sess->s_id; 419 memcpy(fcport.port_name, sess->port_name, WWN_SIZE); 420 fcport.vha = vha; 421 fcport.tgt_session = sess; 422 423 rc = qla2x00_post_async_logout_work(vha, &fcport, NULL); 424 if (rc != QLA_SUCCESS) 425 ql_log(ql_log_warn, vha, 0xf085, 426 "Schedule logo failed sess %p rc %d\n", 427 sess, rc); 428 else 429 logout_started = true; 430 } 431 432 /* 433 * Release the target session for FC Nexus from fabric module code. 434 */ 435 if (sess->se_sess != NULL) 436 ha->tgt.tgt_ops->free_session(sess); 437 438 if (logout_started) { 439 bool traced = false; 440 441 while (!ACCESS_ONCE(sess->logout_completed)) { 442 if (!traced) { 443 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 444 "%s: waiting for sess %p logout\n", 445 __func__, sess); 446 traced = true; 447 } 448 msleep(100); 449 } 450 451 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087, 452 "%s: sess %p logout completed\n", 453 __func__, sess); 454 } 455 456 spin_lock_irqsave(&ha->hardware_lock, flags); 457 458 if (sess->plogi_ack_needed) 459 qlt_send_notify_ack(vha, &sess->tm_iocb, 460 0, 0, 0, 0, 0, 0); 461 462 list_del(&sess->sess_list_entry); 463 464 spin_unlock_irqrestore(&ha->hardware_lock, flags); 465 466 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 467 "Unregistration of sess %p finished\n", sess); 468 469 kfree(sess); 470 /* 471 * We need to protect against race, when tgt is freed before or 472 * inside wake_up() 473 */ 474 tgt->sess_count--; 475 if (tgt->sess_count == 0) 476 wake_up_all(&tgt->waitQ); 477} 478 479/* ha->hardware_lock supposed to be held on entry */ 480void qlt_unreg_sess(struct qla_tgt_sess *sess) 481{ 482 struct scsi_qla_host *vha = sess->vha; 483 484 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 485 486 if (!list_empty(&sess->del_list_entry)) 487 list_del_init(&sess->del_list_entry); 488 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 489 490 INIT_WORK(&sess->free_work, qlt_free_session_done); 491 schedule_work(&sess->free_work); 492} 493EXPORT_SYMBOL(qlt_unreg_sess); 494 495/* ha->hardware_lock supposed to be held on entry */ 496static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 497{ 498 struct qla_hw_data *ha = vha->hw; 499 struct qla_tgt_sess *sess = NULL; 500 uint32_t unpacked_lun, lun = 0; 501 uint16_t loop_id; 502 int res = 0; 503 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 504 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 505 506 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 507 if (loop_id == 0xFFFF) { 508 /* Global event */ 509 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 510 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 511#if 0 /* FIXME: do we need to choose a session here? */ 512 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) { 513 sess = list_entry(ha->tgt.qla_tgt->sess_list.next, 514 typeof(*sess), sess_list_entry); 515 switch (mcmd) { 516 case QLA_TGT_NEXUS_LOSS_SESS: 517 mcmd = QLA_TGT_NEXUS_LOSS; 518 break; 519 case QLA_TGT_ABORT_ALL_SESS: 520 mcmd = QLA_TGT_ABORT_ALL; 521 break; 522 case QLA_TGT_NEXUS_LOSS: 523 case QLA_TGT_ABORT_ALL: 524 break; 525 default: 526 ql_dbg(ql_dbg_tgt, vha, 0xe046, 527 "qla_target(%d): Not allowed " 528 "command %x in %s", vha->vp_idx, 529 mcmd, __func__); 530 sess = NULL; 531 break; 532 } 533 } else 534 sess = NULL; 535#endif 536 } else { 537 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 538 } 539 540 ql_dbg(ql_dbg_tgt, vha, 0xe000, 541 "Using sess for qla_tgt_reset: %p\n", sess); 542 if (!sess) { 543 res = -ESRCH; 544 return res; 545 } 546 547 ql_dbg(ql_dbg_tgt, vha, 0xe047, 548 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 549 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 550 mcmd, loop_id); 551 552 lun = a->u.isp24.fcp_cmnd.lun; 553 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 554 555 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd, 556 iocb, QLA24XX_MGMT_SEND_NACK); 557} 558 559/* ha->hardware_lock supposed to be held on entry */ 560static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess, 561 bool immediate) 562{ 563 struct qla_tgt *tgt = sess->tgt; 564 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5; 565 566 if (sess->deleted) { 567 /* Upgrade to unconditional deletion in case it was temporary */ 568 if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING) 569 list_del(&sess->del_list_entry); 570 else 571 return; 572 } 573 574 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 575 "Scheduling sess %p for deletion\n", sess); 576 577 if (immediate) { 578 dev_loss_tmo = 0; 579 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 580 list_add(&sess->del_list_entry, &tgt->del_sess_list); 581 } else { 582 sess->deleted = QLA_SESS_DELETION_PENDING; 583 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list); 584 } 585 586 sess->expires = jiffies + dev_loss_tmo * HZ; 587 588 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048, 589 "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)" 590 " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n", 591 sess->vha->vp_idx, sess->port_name, sess->loop_id, 592 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, 593 dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete, 594 sess->generation); 595 596 if (immediate) 597 mod_delayed_work(system_wq, &tgt->sess_del_work, 0); 598 else 599 schedule_delayed_work(&tgt->sess_del_work, 600 sess->expires - jiffies); 601} 602 603/* ha->hardware_lock supposed to be held on entry */ 604static void qlt_clear_tgt_db(struct qla_tgt *tgt) 605{ 606 struct qla_tgt_sess *sess; 607 608 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) 609 qlt_schedule_sess_for_deletion(sess, true); 610 611 /* At this point tgt could be already dead */ 612} 613 614static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 615 uint16_t *loop_id) 616{ 617 struct qla_hw_data *ha = vha->hw; 618 dma_addr_t gid_list_dma; 619 struct gid_list_info *gid_list; 620 char *id_iter; 621 int res, rc, i; 622 uint16_t entries; 623 624 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 625 &gid_list_dma, GFP_KERNEL); 626 if (!gid_list) { 627 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 628 "qla_target(%d): DMA Alloc failed of %u\n", 629 vha->vp_idx, qla2x00_gid_list_size(ha)); 630 return -ENOMEM; 631 } 632 633 /* Get list of logged in devices */ 634 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries); 635 if (rc != QLA_SUCCESS) { 636 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 637 "qla_target(%d): get_id_list() failed: %x\n", 638 vha->vp_idx, rc); 639 res = -1; 640 goto out_free_id_list; 641 } 642 643 id_iter = (char *)gid_list; 644 res = -1; 645 for (i = 0; i < entries; i++) { 646 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 647 if ((gid->al_pa == s_id[2]) && 648 (gid->area == s_id[1]) && 649 (gid->domain == s_id[0])) { 650 *loop_id = le16_to_cpu(gid->loop_id); 651 res = 0; 652 break; 653 } 654 id_iter += ha->gid_list_info_size; 655 } 656 657out_free_id_list: 658 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 659 gid_list, gid_list_dma); 660 return res; 661} 662 663/* ha->hardware_lock supposed to be held on entry */ 664static void qlt_undelete_sess(struct qla_tgt_sess *sess) 665{ 666 BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING); 667 668 list_del_init(&sess->del_list_entry); 669 sess->deleted = 0; 670} 671 672static void qlt_del_sess_work_fn(struct delayed_work *work) 673{ 674 struct qla_tgt *tgt = container_of(work, struct qla_tgt, 675 sess_del_work); 676 struct scsi_qla_host *vha = tgt->vha; 677 struct qla_hw_data *ha = vha->hw; 678 struct qla_tgt_sess *sess; 679 unsigned long flags, elapsed; 680 681 spin_lock_irqsave(&ha->hardware_lock, flags); 682 while (!list_empty(&tgt->del_sess_list)) { 683 sess = list_entry(tgt->del_sess_list.next, typeof(*sess), 684 del_list_entry); 685 elapsed = jiffies; 686 if (time_after_eq(elapsed, sess->expires)) { 687 /* No turning back */ 688 list_del_init(&sess->del_list_entry); 689 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 690 691 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 692 "Timeout: sess %p about to be deleted\n", 693 sess); 694 ha->tgt.tgt_ops->shutdown_sess(sess); 695 ha->tgt.tgt_ops->put_sess(sess); 696 } else { 697 schedule_delayed_work(&tgt->sess_del_work, 698 sess->expires - elapsed); 699 break; 700 } 701 } 702 spin_unlock_irqrestore(&ha->hardware_lock, flags); 703} 704 705/* 706 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 707 * Caller must put it. 708 */ 709static struct qla_tgt_sess *qlt_create_sess( 710 struct scsi_qla_host *vha, 711 fc_port_t *fcport, 712 bool local) 713{ 714 struct qla_hw_data *ha = vha->hw; 715 struct qla_tgt_sess *sess; 716 unsigned long flags; 717 unsigned char be_sid[3]; 718 719 /* Check to avoid double sessions */ 720 spin_lock_irqsave(&ha->hardware_lock, flags); 721 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list, 722 sess_list_entry) { 723 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) { 724 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005, 725 "Double sess %p found (s_id %x:%x:%x, " 726 "loop_id %d), updating to d_id %x:%x:%x, " 727 "loop_id %d", sess, sess->s_id.b.domain, 728 sess->s_id.b.al_pa, sess->s_id.b.area, 729 sess->loop_id, fcport->d_id.b.domain, 730 fcport->d_id.b.al_pa, fcport->d_id.b.area, 731 fcport->loop_id); 732 733 /* Cannot undelete at this point */ 734 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 735 spin_unlock_irqrestore(&ha->hardware_lock, 736 flags); 737 return NULL; 738 } 739 740 if (sess->deleted) 741 qlt_undelete_sess(sess); 742 743 kref_get(&sess->se_sess->sess_kref); 744 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id, 745 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 746 747 if (sess->local && !local) 748 sess->local = 0; 749 750 qlt_do_generation_tick(vha, &sess->generation); 751 752 spin_unlock_irqrestore(&ha->hardware_lock, flags); 753 754 return sess; 755 } 756 } 757 spin_unlock_irqrestore(&ha->hardware_lock, flags); 758 759 sess = kzalloc(sizeof(*sess), GFP_KERNEL); 760 if (!sess) { 761 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a, 762 "qla_target(%u): session allocation failed, all commands " 763 "from port %8phC will be refused", vha->vp_idx, 764 fcport->port_name); 765 766 return NULL; 767 } 768 sess->tgt = vha->vha_tgt.qla_tgt; 769 sess->vha = vha; 770 sess->s_id = fcport->d_id; 771 sess->loop_id = fcport->loop_id; 772 sess->local = local; 773 INIT_LIST_HEAD(&sess->del_list_entry); 774 775 /* Under normal circumstances we want to logout from firmware when 776 * session eventually ends and release corresponding nport handle. 777 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 778 * code will adjust these flags as necessary. */ 779 sess->logout_on_delete = 1; 780 sess->keep_nport_handle = 0; 781 782 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 783 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n", 784 sess, vha->vha_tgt.qla_tgt); 785 786 be_sid[0] = sess->s_id.b.domain; 787 be_sid[1] = sess->s_id.b.area; 788 be_sid[2] = sess->s_id.b.al_pa; 789 /* 790 * Determine if this fc_port->port_name is allowed to access 791 * target mode using explict NodeACLs+MappedLUNs, or using 792 * TPG demo mode. If this is successful a target mode FC nexus 793 * is created. 794 */ 795 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 796 &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) { 797 kfree(sess); 798 return NULL; 799 } 800 /* 801 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess 802 * access across ->hardware_lock reaquire. 803 */ 804 kref_get(&sess->se_sess->sess_kref); 805 806 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED); 807 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name)); 808 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name)); 809 810 spin_lock_irqsave(&ha->hardware_lock, flags); 811 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list); 812 vha->vha_tgt.qla_tgt->sess_count++; 813 qlt_do_generation_tick(vha, &sess->generation); 814 spin_unlock_irqrestore(&ha->hardware_lock, flags); 815 816 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 817 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 818 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 819 vha->vp_idx, local ? "local " : "", fcport->port_name, 820 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area, 821 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 822 823 return sess; 824} 825 826/* 827 * Called from qla2x00_reg_remote_port() 828 */ 829void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 830{ 831 struct qla_hw_data *ha = vha->hw; 832 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 833 struct qla_tgt_sess *sess; 834 unsigned long flags; 835 836 if (!vha->hw->tgt.tgt_ops) 837 return; 838 839 if (!tgt || (fcport->port_type != FCT_INITIATOR)) 840 return; 841 842 if (qla_ini_mode_enabled(vha)) 843 return; 844 845 spin_lock_irqsave(&ha->hardware_lock, flags); 846 if (tgt->tgt_stop) { 847 spin_unlock_irqrestore(&ha->hardware_lock, flags); 848 return; 849 } 850 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); 851 if (!sess) { 852 spin_unlock_irqrestore(&ha->hardware_lock, flags); 853 854 mutex_lock(&vha->vha_tgt.tgt_mutex); 855 sess = qlt_create_sess(vha, fcport, false); 856 mutex_unlock(&vha->vha_tgt.tgt_mutex); 857 858 spin_lock_irqsave(&ha->hardware_lock, flags); 859 } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 860 /* Point of no return */ 861 spin_unlock_irqrestore(&ha->hardware_lock, flags); 862 return; 863 } else { 864 kref_get(&sess->se_sess->sess_kref); 865 866 if (sess->deleted) { 867 qlt_undelete_sess(sess); 868 869 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 870 "qla_target(%u): %ssession for port %8phC " 871 "(loop ID %d) reappeared\n", vha->vp_idx, 872 sess->local ? "local " : "", sess->port_name, 873 sess->loop_id); 874 875 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 876 "Reappeared sess %p\n", sess); 877 } 878 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id, 879 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 880 } 881 882 if (sess && sess->local) { 883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 884 "qla_target(%u): local session for " 885 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 886 fcport->port_name, sess->loop_id); 887 sess->local = 0; 888 } 889 ha->tgt.tgt_ops->put_sess(sess); 890 spin_unlock_irqrestore(&ha->hardware_lock, flags); 891} 892 893/* 894 * max_gen - specifies maximum session generation 895 * at which this deletion requestion is still valid 896 */ 897void 898qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 899{ 900 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 901 struct qla_tgt_sess *sess; 902 903 if (!vha->hw->tgt.tgt_ops) 904 return; 905 906 if (!tgt) 907 return; 908 909 if (tgt->tgt_stop) { 910 return; 911 } 912 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); 913 if (!sess) { 914 return; 915 } 916 917 if (max_gen - sess->generation < 0) { 918 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 919 "Ignoring stale deletion request for se_sess %p / sess %p" 920 " for port %8phC, req_gen %d, sess_gen %d\n", 921 sess->se_sess, sess, sess->port_name, max_gen, 922 sess->generation); 923 return; 924 } 925 926 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 927 928 sess->local = 1; 929 qlt_schedule_sess_for_deletion(sess, false); 930} 931 932static inline int test_tgt_sess_count(struct qla_tgt *tgt) 933{ 934 struct qla_hw_data *ha = tgt->ha; 935 unsigned long flags; 936 int res; 937 /* 938 * We need to protect against race, when tgt is freed before or 939 * inside wake_up() 940 */ 941 spin_lock_irqsave(&ha->hardware_lock, flags); 942 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 943 "tgt %p, empty(sess_list)=%d sess_count=%d\n", 944 tgt, list_empty(&tgt->sess_list), tgt->sess_count); 945 res = (tgt->sess_count == 0); 946 spin_unlock_irqrestore(&ha->hardware_lock, flags); 947 948 return res; 949} 950 951/* Called by tcm_qla2xxx configfs code */ 952int qlt_stop_phase1(struct qla_tgt *tgt) 953{ 954 struct scsi_qla_host *vha = tgt->vha; 955 struct qla_hw_data *ha = tgt->ha; 956 unsigned long flags; 957 958 mutex_lock(&qla_tgt_mutex); 959 if (!vha->fc_vport) { 960 struct Scsi_Host *sh = vha->host; 961 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 962 bool npiv_vports; 963 964 spin_lock_irqsave(sh->host_lock, flags); 965 npiv_vports = (fc_host->npiv_vports_inuse); 966 spin_unlock_irqrestore(sh->host_lock, flags); 967 968 if (npiv_vports) { 969 mutex_unlock(&qla_tgt_mutex); 970 return -EPERM; 971 } 972 } 973 if (tgt->tgt_stop || tgt->tgt_stopped) { 974 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 975 "Already in tgt->tgt_stop or tgt_stopped state\n"); 976 mutex_unlock(&qla_tgt_mutex); 977 return -EPERM; 978 } 979 980 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 981 vha->host_no, vha); 982 /* 983 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 984 * Lock is needed, because we still can get an incoming packet. 985 */ 986 mutex_lock(&vha->vha_tgt.tgt_mutex); 987 spin_lock_irqsave(&ha->hardware_lock, flags); 988 tgt->tgt_stop = 1; 989 qlt_clear_tgt_db(tgt); 990 spin_unlock_irqrestore(&ha->hardware_lock, flags); 991 mutex_unlock(&vha->vha_tgt.tgt_mutex); 992 mutex_unlock(&qla_tgt_mutex); 993 994 flush_delayed_work(&tgt->sess_del_work); 995 996 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 997 "Waiting for sess works (tgt %p)", tgt); 998 spin_lock_irqsave(&tgt->sess_work_lock, flags); 999 while (!list_empty(&tgt->sess_works_list)) { 1000 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1001 flush_scheduled_work(); 1002 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1003 } 1004 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1005 1006 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1007 "Waiting for tgt %p: list_empty(sess_list)=%d " 1008 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list), 1009 tgt->sess_count); 1010 1011 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1012 1013 /* Big hammer */ 1014 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha)) 1015 qlt_disable_vha(vha); 1016 1017 /* Wait for sessions to clear out (just in case) */ 1018 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1019 return 0; 1020} 1021EXPORT_SYMBOL(qlt_stop_phase1); 1022 1023/* Called by tcm_qla2xxx configfs code */ 1024void qlt_stop_phase2(struct qla_tgt *tgt) 1025{ 1026 struct qla_hw_data *ha = tgt->ha; 1027 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1028 unsigned long flags; 1029 1030 if (tgt->tgt_stopped) { 1031 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1032 "Already in tgt->tgt_stopped state\n"); 1033 dump_stack(); 1034 return; 1035 } 1036 1037 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1038 "Waiting for %d IRQ commands to complete (tgt %p)", 1039 tgt->irq_cmd_count, tgt); 1040 1041 mutex_lock(&vha->vha_tgt.tgt_mutex); 1042 spin_lock_irqsave(&ha->hardware_lock, flags); 1043 while (tgt->irq_cmd_count != 0) { 1044 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1045 udelay(2); 1046 spin_lock_irqsave(&ha->hardware_lock, flags); 1047 } 1048 tgt->tgt_stop = 0; 1049 tgt->tgt_stopped = 1; 1050 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1051 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1052 1053 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished", 1054 tgt); 1055} 1056EXPORT_SYMBOL(qlt_stop_phase2); 1057 1058/* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1059static void qlt_release(struct qla_tgt *tgt) 1060{ 1061 scsi_qla_host_t *vha = tgt->vha; 1062 1063 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1064 qlt_stop_phase2(tgt); 1065 1066 vha->vha_tgt.qla_tgt = NULL; 1067 1068 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1069 "Release of tgt %p finished\n", tgt); 1070 1071 kfree(tgt); 1072} 1073 1074/* ha->hardware_lock supposed to be held on entry */ 1075static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1076 const void *param, unsigned int param_size) 1077{ 1078 struct qla_tgt_sess_work_param *prm; 1079 unsigned long flags; 1080 1081 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1082 if (!prm) { 1083 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1084 "qla_target(%d): Unable to create session " 1085 "work, command will be refused", 0); 1086 return -ENOMEM; 1087 } 1088 1089 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1090 "Scheduling work (type %d, prm %p)" 1091 " to find session for param %p (size %d, tgt %p)\n", 1092 type, prm, param, param_size, tgt); 1093 1094 prm->type = type; 1095 memcpy(&prm->tm_iocb, param, param_size); 1096 1097 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1098 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1099 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1100 1101 schedule_work(&tgt->sess_work); 1102 1103 return 0; 1104} 1105 1106/* 1107 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1108 */ 1109static void qlt_send_notify_ack(struct scsi_qla_host *vha, 1110 struct imm_ntfy_from_isp *ntfy, 1111 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1112 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1113{ 1114 struct qla_hw_data *ha = vha->hw; 1115 request_t *pkt; 1116 struct nack_to_isp *nack; 1117 1118 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1119 1120 /* Send marker if required */ 1121 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1122 return; 1123 1124 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 1125 if (!pkt) { 1126 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1127 "qla_target(%d): %s failed: unable to allocate " 1128 "request packet\n", vha->vp_idx, __func__); 1129 return; 1130 } 1131 1132 if (vha->vha_tgt.qla_tgt != NULL) 1133 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1134 1135 pkt->entry_type = NOTIFY_ACK_TYPE; 1136 pkt->entry_count = 1; 1137 1138 nack = (struct nack_to_isp *)pkt; 1139 nack->ox_id = ntfy->ox_id; 1140 1141 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1142 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1143 nack->u.isp24.flags = ntfy->u.isp24.flags & 1144 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1145 } 1146 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1147 nack->u.isp24.status = ntfy->u.isp24.status; 1148 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1149 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1150 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1151 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1152 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1153 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1154 nack->u.isp24.srr_reject_code = srr_reject_code; 1155 nack->u.isp24.srr_reject_code_expl = srr_explan; 1156 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1157 1158 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1159 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1160 vha->vp_idx, nack->u.isp24.status); 1161 1162 /* Memory Barrier */ 1163 wmb(); 1164 qla2x00_start_iocbs(vha, vha->req); 1165} 1166 1167/* 1168 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1169 */ 1170static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, 1171 struct abts_recv_from_24xx *abts, uint32_t status, 1172 bool ids_reversed) 1173{ 1174 struct qla_hw_data *ha = vha->hw; 1175 struct abts_resp_to_24xx *resp; 1176 uint32_t f_ctl; 1177 uint8_t *p; 1178 1179 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1180 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1181 ha, abts, status); 1182 1183 /* Send marker if required */ 1184 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1185 return; 1186 1187 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1188 if (!resp) { 1189 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1190 "qla_target(%d): %s failed: unable to allocate " 1191 "request packet", vha->vp_idx, __func__); 1192 return; 1193 } 1194 1195 resp->entry_type = ABTS_RESP_24XX; 1196 resp->entry_count = 1; 1197 resp->nport_handle = abts->nport_handle; 1198 resp->vp_index = vha->vp_idx; 1199 resp->sof_type = abts->sof_type; 1200 resp->exchange_address = abts->exchange_address; 1201 resp->fcp_hdr_le = abts->fcp_hdr_le; 1202 f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1203 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1204 F_CTL_SEQ_INITIATIVE); 1205 p = (uint8_t *)&f_ctl; 1206 resp->fcp_hdr_le.f_ctl[0] = *p++; 1207 resp->fcp_hdr_le.f_ctl[1] = *p++; 1208 resp->fcp_hdr_le.f_ctl[2] = *p; 1209 if (ids_reversed) { 1210 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1211 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1212 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1213 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1214 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1215 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1216 } else { 1217 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1218 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1219 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1220 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1221 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1222 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1223 } 1224 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1225 if (status == FCP_TMF_CMPL) { 1226 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1227 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1228 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1229 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1230 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1231 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1232 } else { 1233 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1234 resp->payload.ba_rjt.reason_code = 1235 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1236 /* Other bytes are zero */ 1237 } 1238 1239 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1240 1241 /* Memory Barrier */ 1242 wmb(); 1243 qla2x00_start_iocbs(vha, vha->req); 1244} 1245 1246/* 1247 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1248 */ 1249static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1250 struct abts_resp_from_24xx_fw *entry) 1251{ 1252 struct ctio7_to_24xx *ctio; 1253 1254 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1255 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1256 /* Send marker if required */ 1257 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1258 return; 1259 1260 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1261 if (ctio == NULL) { 1262 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1263 "qla_target(%d): %s failed: unable to allocate " 1264 "request packet\n", vha->vp_idx, __func__); 1265 return; 1266 } 1267 1268 /* 1269 * We've got on entrance firmware's response on by us generated 1270 * ABTS response. So, in it ID fields are reversed. 1271 */ 1272 1273 ctio->entry_type = CTIO_TYPE7; 1274 ctio->entry_count = 1; 1275 ctio->nport_handle = entry->nport_handle; 1276 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1277 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); 1278 ctio->vp_index = vha->vp_idx; 1279 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1280 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1281 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1282 ctio->exchange_addr = entry->exchange_addr_to_abort; 1283 ctio->u.status1.flags = 1284 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1285 CTIO7_FLAGS_TERMINATE); 1286 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1287 1288 /* Memory Barrier */ 1289 wmb(); 1290 qla2x00_start_iocbs(vha, vha->req); 1291 1292 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, 1293 FCP_TMF_CMPL, true); 1294} 1295 1296static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1297{ 1298 struct qla_tgt_sess_op *op; 1299 struct qla_tgt_cmd *cmd; 1300 1301 spin_lock(&vha->cmd_list_lock); 1302 1303 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1304 if (tag == op->atio.u.isp24.exchange_addr) { 1305 op->aborted = true; 1306 spin_unlock(&vha->cmd_list_lock); 1307 return 1; 1308 } 1309 } 1310 1311 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1312 if (tag == cmd->atio.u.isp24.exchange_addr) { 1313 cmd->state = QLA_TGT_STATE_ABORTED; 1314 spin_unlock(&vha->cmd_list_lock); 1315 return 1; 1316 } 1317 } 1318 1319 spin_unlock(&vha->cmd_list_lock); 1320 return 0; 1321} 1322 1323/* drop cmds for the given lun 1324 * XXX only looks for cmds on the port through which lun reset was recieved 1325 * XXX does not go through the list of other port (which may have cmds 1326 * for the same lun) 1327 */ 1328static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1329 uint32_t lun, uint8_t *s_id) 1330{ 1331 struct qla_tgt_sess_op *op; 1332 struct qla_tgt_cmd *cmd; 1333 uint32_t key; 1334 1335 key = sid_to_key(s_id); 1336 spin_lock(&vha->cmd_list_lock); 1337 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1338 uint32_t op_key; 1339 uint32_t op_lun; 1340 1341 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1342 op_lun = scsilun_to_int( 1343 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1344 if (op_key == key && op_lun == lun) 1345 op->aborted = true; 1346 } 1347 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1348 uint32_t cmd_key; 1349 uint32_t cmd_lun; 1350 1351 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1352 cmd_lun = scsilun_to_int( 1353 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1354 if (cmd_key == key && cmd_lun == lun) 1355 cmd->state = QLA_TGT_STATE_ABORTED; 1356 } 1357 spin_unlock(&vha->cmd_list_lock); 1358} 1359 1360/* ha->hardware_lock supposed to be held on entry */ 1361static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1362 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess) 1363{ 1364 struct qla_hw_data *ha = vha->hw; 1365 struct se_session *se_sess = sess->se_sess; 1366 struct qla_tgt_mgmt_cmd *mcmd; 1367 struct se_cmd *se_cmd; 1368 u32 lun = 0; 1369 int rc; 1370 bool found_lun = false; 1371 1372 spin_lock(&se_sess->sess_cmd_lock); 1373 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) { 1374 struct qla_tgt_cmd *cmd = 1375 container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 1376 if (cmd->tag == abts->exchange_addr_to_abort) { 1377 lun = cmd->unpacked_lun; 1378 found_lun = true; 1379 break; 1380 } 1381 } 1382 spin_unlock(&se_sess->sess_cmd_lock); 1383 1384 /* cmd not in LIO lists, look in qla list */ 1385 if (!found_lun) { 1386 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 1387 /* send TASK_ABORT response immediately */ 1388 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false); 1389 return 0; 1390 } else { 1391 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081, 1392 "unable to find cmd in driver or LIO for tag 0x%x\n", 1393 abts->exchange_addr_to_abort); 1394 return -ENOENT; 1395 } 1396 } 1397 1398 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 1399 "qla_target(%d): task abort (tag=%d)\n", 1400 vha->vp_idx, abts->exchange_addr_to_abort); 1401 1402 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 1403 if (mcmd == NULL) { 1404 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 1405 "qla_target(%d): %s: Allocation of ABORT cmd failed", 1406 vha->vp_idx, __func__); 1407 return -ENOMEM; 1408 } 1409 memset(mcmd, 0, sizeof(*mcmd)); 1410 1411 mcmd->sess = sess; 1412 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 1413 mcmd->reset_count = vha->hw->chip_reset; 1414 1415 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK, 1416 abts->exchange_addr_to_abort); 1417 if (rc != 0) { 1418 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, 1419 "qla_target(%d): tgt_ops->handle_tmr()" 1420 " failed: %d", vha->vp_idx, rc); 1421 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1422 return -EFAULT; 1423 } 1424 1425 return 0; 1426} 1427 1428/* 1429 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1430 */ 1431static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1432 struct abts_recv_from_24xx *abts) 1433{ 1434 struct qla_hw_data *ha = vha->hw; 1435 struct qla_tgt_sess *sess; 1436 uint32_t tag = abts->exchange_addr_to_abort; 1437 uint8_t s_id[3]; 1438 int rc; 1439 1440 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 1441 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 1442 "qla_target(%d): ABTS: Abort Sequence not " 1443 "supported\n", vha->vp_idx); 1444 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1445 return; 1446 } 1447 1448 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 1449 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 1450 "qla_target(%d): ABTS: Unknown Exchange " 1451 "Address received\n", vha->vp_idx); 1452 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1453 return; 1454 } 1455 1456 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 1457 "qla_target(%d): task abort (s_id=%x:%x:%x, " 1458 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 1459 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 1460 le32_to_cpu(abts->fcp_hdr_le.parameter)); 1461 1462 s_id[0] = abts->fcp_hdr_le.s_id[2]; 1463 s_id[1] = abts->fcp_hdr_le.s_id[1]; 1464 s_id[2] = abts->fcp_hdr_le.s_id[0]; 1465 1466 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 1467 if (!sess) { 1468 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 1469 "qla_target(%d): task abort for non-existant session\n", 1470 vha->vp_idx); 1471 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 1472 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); 1473 if (rc != 0) { 1474 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, 1475 false); 1476 } 1477 return; 1478 } 1479 1480 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1481 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1482 return; 1483 } 1484 1485 rc = __qlt_24xx_handle_abts(vha, abts, sess); 1486 if (rc != 0) { 1487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 1488 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 1489 vha->vp_idx, rc); 1490 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1491 return; 1492 } 1493} 1494 1495/* 1496 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1497 */ 1498static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, 1499 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 1500{ 1501 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 1502 struct ctio7_to_24xx *ctio; 1503 uint16_t temp; 1504 1505 ql_dbg(ql_dbg_tgt, ha, 0xe008, 1506 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 1507 ha, atio, resp_code); 1508 1509 /* Send marker if required */ 1510 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS) 1511 return; 1512 1513 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL); 1514 if (ctio == NULL) { 1515 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 1516 "qla_target(%d): %s failed: unable to allocate " 1517 "request packet\n", ha->vp_idx, __func__); 1518 return; 1519 } 1520 1521 ctio->entry_type = CTIO_TYPE7; 1522 ctio->entry_count = 1; 1523 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1524 ctio->nport_handle = mcmd->sess->loop_id; 1525 ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); 1526 ctio->vp_index = ha->vp_idx; 1527 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 1528 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 1529 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 1530 ctio->exchange_addr = atio->u.isp24.exchange_addr; 1531 ctio->u.status1.flags = (atio->u.isp24.attr << 9) | 1532 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1533 CTIO7_FLAGS_SEND_STATUS); 1534 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 1535 ctio->u.status1.ox_id = cpu_to_le16(temp); 1536 ctio->u.status1.scsi_status = 1537 __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 1538 ctio->u.status1.response_len = __constant_cpu_to_le16(8); 1539 ctio->u.status1.sense_data[0] = resp_code; 1540 1541 /* Memory Barrier */ 1542 wmb(); 1543 qla2x00_start_iocbs(ha, ha->req); 1544} 1545 1546void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 1547{ 1548 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1549} 1550EXPORT_SYMBOL(qlt_free_mcmd); 1551 1552/* callback from target fabric module code */ 1553void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 1554{ 1555 struct scsi_qla_host *vha = mcmd->sess->vha; 1556 struct qla_hw_data *ha = vha->hw; 1557 unsigned long flags; 1558 1559 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 1560 "TM response mcmd (%p) status %#x state %#x", 1561 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 1562 1563 spin_lock_irqsave(&ha->hardware_lock, flags); 1564 1565 if (qla2x00_reset_active(vha) || mcmd->reset_count != ha->chip_reset) { 1566 /* 1567 * Either a chip reset is active or this request was from 1568 * previous life, just abort the processing. 1569 */ 1570 ql_dbg(ql_dbg_async, vha, 0xe100, 1571 "RESET-TMR active/old-count/new-count = %d/%d/%d.\n", 1572 qla2x00_reset_active(vha), mcmd->reset_count, 1573 ha->chip_reset); 1574 ha->tgt.tgt_ops->free_mcmd(mcmd); 1575 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1576 return; 1577 } 1578 1579 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) 1580 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, 1581 0, 0, 0, 0, 0, 0); 1582 else { 1583 if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK) 1584 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, 1585 mcmd->fc_tm_rsp, false); 1586 else 1587 qlt_24xx_send_task_mgmt_ctio(vha, mcmd, 1588 mcmd->fc_tm_rsp); 1589 } 1590 /* 1591 * Make the callback for ->free_mcmd() to queue_work() and invoke 1592 * target_put_sess_cmd() to drop cmd_kref to 1. The final 1593 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 1594 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 1595 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 1596 * qlt_xmit_tm_rsp() returns here.. 1597 */ 1598 ha->tgt.tgt_ops->free_mcmd(mcmd); 1599 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1600} 1601EXPORT_SYMBOL(qlt_xmit_tm_rsp); 1602 1603/* No locks */ 1604static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 1605{ 1606 struct qla_tgt_cmd *cmd = prm->cmd; 1607 1608 BUG_ON(cmd->sg_cnt == 0); 1609 1610 prm->sg = (struct scatterlist *)cmd->sg; 1611 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg, 1612 cmd->sg_cnt, cmd->dma_data_direction); 1613 if (unlikely(prm->seg_cnt == 0)) 1614 goto out_err; 1615 1616 prm->cmd->sg_mapped = 1; 1617 1618 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 1619 /* 1620 * If greater than four sg entries then we need to allocate 1621 * the continuation entries 1622 */ 1623 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd) 1624 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 1625 prm->tgt->datasegs_per_cmd, 1626 prm->tgt->datasegs_per_cont); 1627 } else { 1628 /* DIF */ 1629 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 1630 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 1631 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 1632 prm->tot_dsds = prm->seg_cnt; 1633 } else 1634 prm->tot_dsds = prm->seg_cnt; 1635 1636 if (cmd->prot_sg_cnt) { 1637 prm->prot_sg = cmd->prot_sg; 1638 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev, 1639 cmd->prot_sg, cmd->prot_sg_cnt, 1640 cmd->dma_data_direction); 1641 if (unlikely(prm->prot_seg_cnt == 0)) 1642 goto out_err; 1643 1644 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 1645 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 1646 /* Dif Bundling not support here */ 1647 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 1648 cmd->blk_sz); 1649 prm->tot_dsds += prm->prot_seg_cnt; 1650 } else 1651 prm->tot_dsds += prm->prot_seg_cnt; 1652 } 1653 } 1654 1655 return 0; 1656 1657out_err: 1658 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, 1659 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 1660 0, prm->cmd->sg_cnt); 1661 return -1; 1662} 1663 1664static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 1665{ 1666 struct qla_hw_data *ha = vha->hw; 1667 1668 if (!cmd->sg_mapped) 1669 return; 1670 1671 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 1672 cmd->sg_mapped = 0; 1673 1674 if (cmd->prot_sg_cnt) 1675 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 1676 cmd->dma_data_direction); 1677 1678 if (cmd->ctx_dsd_alloced) 1679 qla2x00_clean_dsd_pool(ha, NULL, cmd); 1680 1681 if (cmd->ctx) 1682 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 1683} 1684 1685static int qlt_check_reserve_free_req(struct scsi_qla_host *vha, 1686 uint32_t req_cnt) 1687{ 1688 uint32_t cnt, cnt_in; 1689 1690 if (vha->req->cnt < (req_cnt + 2)) { 1691 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out); 1692 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in); 1693 1694 if (vha->req->ring_index < cnt) 1695 vha->req->cnt = cnt - vha->req->ring_index; 1696 else 1697 vha->req->cnt = vha->req->length - 1698 (vha->req->ring_index - cnt); 1699 } 1700 1701 if (unlikely(vha->req->cnt < (req_cnt + 2))) { 1702 ql_dbg(ql_dbg_io, vha, 0x305a, 1703 "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n", 1704 vha->vp_idx, vha->req->ring_index, 1705 vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length); 1706 return -EAGAIN; 1707 } 1708 vha->req->cnt -= req_cnt; 1709 1710 return 0; 1711} 1712 1713/* 1714 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1715 */ 1716static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha) 1717{ 1718 /* Adjust ring index. */ 1719 vha->req->ring_index++; 1720 if (vha->req->ring_index == vha->req->length) { 1721 vha->req->ring_index = 0; 1722 vha->req->ring_ptr = vha->req->ring; 1723 } else { 1724 vha->req->ring_ptr++; 1725 } 1726 return (cont_entry_t *)vha->req->ring_ptr; 1727} 1728 1729/* ha->hardware_lock supposed to be held on entry */ 1730static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha) 1731{ 1732 struct qla_hw_data *ha = vha->hw; 1733 uint32_t h; 1734 1735 h = ha->tgt.current_handle; 1736 /* always increment cmd handle */ 1737 do { 1738 ++h; 1739 if (h > DEFAULT_OUTSTANDING_COMMANDS) 1740 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */ 1741 if (h == ha->tgt.current_handle) { 1742 ql_dbg(ql_dbg_io, vha, 0x305b, 1743 "qla_target(%d): Ran out of " 1744 "empty cmd slots in ha %p\n", vha->vp_idx, ha); 1745 h = QLA_TGT_NULL_HANDLE; 1746 break; 1747 } 1748 } while ((h == QLA_TGT_NULL_HANDLE) || 1749 (h == QLA_TGT_SKIP_HANDLE) || 1750 (ha->tgt.cmds[h-1] != NULL)); 1751 1752 if (h != QLA_TGT_NULL_HANDLE) 1753 ha->tgt.current_handle = h; 1754 1755 return h; 1756} 1757 1758/* ha->hardware_lock supposed to be held on entry */ 1759static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, 1760 struct scsi_qla_host *vha) 1761{ 1762 uint32_t h; 1763 struct ctio7_to_24xx *pkt; 1764 struct qla_hw_data *ha = vha->hw; 1765 struct atio_from_isp *atio = &prm->cmd->atio; 1766 uint16_t temp; 1767 1768 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr; 1769 prm->pkt = pkt; 1770 memset(pkt, 0, sizeof(*pkt)); 1771 1772 pkt->entry_type = CTIO_TYPE7; 1773 pkt->entry_count = (uint8_t)prm->req_cnt; 1774 pkt->vp_index = vha->vp_idx; 1775 1776 h = qlt_make_handle(vha); 1777 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1778 /* 1779 * CTIO type 7 from the firmware doesn't provide a way to 1780 * know the initiator's LOOP ID, hence we can't find 1781 * the session and, so, the command. 1782 */ 1783 return -EAGAIN; 1784 } else 1785 ha->tgt.cmds[h-1] = prm->cmd; 1786 1787 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 1788 pkt->nport_handle = prm->cmd->loop_id; 1789 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); 1790 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 1791 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 1792 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 1793 pkt->exchange_addr = atio->u.isp24.exchange_addr; 1794 pkt->u.status0.flags |= (atio->u.isp24.attr << 9); 1795 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 1796 pkt->u.status0.ox_id = cpu_to_le16(temp); 1797 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 1798 1799 return 0; 1800} 1801 1802/* 1803 * ha->hardware_lock supposed to be held on entry. We have already made sure 1804 * that there is sufficient amount of request entries to not drop it. 1805 */ 1806static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm, 1807 struct scsi_qla_host *vha) 1808{ 1809 int cnt; 1810 uint32_t *dword_ptr; 1811 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 1812 1813 /* Build continuation packets */ 1814 while (prm->seg_cnt > 0) { 1815 cont_a64_entry_t *cont_pkt64 = 1816 (cont_a64_entry_t *)qlt_get_req_pkt(vha); 1817 1818 /* 1819 * Make sure that from cont_pkt64 none of 1820 * 64-bit specific fields used for 32-bit 1821 * addressing. Cast to (cont_entry_t *) for 1822 * that. 1823 */ 1824 1825 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 1826 1827 cont_pkt64->entry_count = 1; 1828 cont_pkt64->sys_define = 0; 1829 1830 if (enable_64bit_addressing) { 1831 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 1832 dword_ptr = 1833 (uint32_t *)&cont_pkt64->dseg_0_address; 1834 } else { 1835 cont_pkt64->entry_type = CONTINUE_TYPE; 1836 dword_ptr = 1837 (uint32_t *)&((cont_entry_t *) 1838 cont_pkt64)->dseg_0_address; 1839 } 1840 1841 /* Load continuation entry data segments */ 1842 for (cnt = 0; 1843 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt; 1844 cnt++, prm->seg_cnt--) { 1845 *dword_ptr++ = 1846 cpu_to_le32(pci_dma_lo32 1847 (sg_dma_address(prm->sg))); 1848 if (enable_64bit_addressing) { 1849 *dword_ptr++ = 1850 cpu_to_le32(pci_dma_hi32 1851 (sg_dma_address 1852 (prm->sg))); 1853 } 1854 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 1855 1856 prm->sg = sg_next(prm->sg); 1857 } 1858 } 1859} 1860 1861/* 1862 * ha->hardware_lock supposed to be held on entry. We have already made sure 1863 * that there is sufficient amount of request entries to not drop it. 1864 */ 1865static void qlt_load_data_segments(struct qla_tgt_prm *prm, 1866 struct scsi_qla_host *vha) 1867{ 1868 int cnt; 1869 uint32_t *dword_ptr; 1870 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 1871 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 1872 1873 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 1874 1875 /* Setup packet address segment pointer */ 1876 dword_ptr = pkt24->u.status0.dseg_0_address; 1877 1878 /* Set total data segment count */ 1879 if (prm->seg_cnt) 1880 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 1881 1882 if (prm->seg_cnt == 0) { 1883 /* No data transfer */ 1884 *dword_ptr++ = 0; 1885 *dword_ptr = 0; 1886 return; 1887 } 1888 1889 /* If scatter gather */ 1890 1891 /* Load command entry data segments */ 1892 for (cnt = 0; 1893 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt; 1894 cnt++, prm->seg_cnt--) { 1895 *dword_ptr++ = 1896 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 1897 if (enable_64bit_addressing) { 1898 *dword_ptr++ = 1899 cpu_to_le32(pci_dma_hi32( 1900 sg_dma_address(prm->sg))); 1901 } 1902 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 1903 1904 prm->sg = sg_next(prm->sg); 1905 } 1906 1907 qlt_load_cont_data_segments(prm, vha); 1908} 1909 1910static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 1911{ 1912 return cmd->bufflen > 0; 1913} 1914 1915/* 1916 * Called without ha->hardware_lock held 1917 */ 1918static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 1919 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 1920 uint32_t *full_req_cnt) 1921{ 1922 struct qla_tgt *tgt = cmd->tgt; 1923 struct scsi_qla_host *vha = tgt->vha; 1924 struct qla_hw_data *ha = vha->hw; 1925 struct se_cmd *se_cmd = &cmd->se_cmd; 1926 1927 prm->cmd = cmd; 1928 prm->tgt = tgt; 1929 prm->rq_result = scsi_status; 1930 prm->sense_buffer = &cmd->sense_buffer[0]; 1931 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 1932 prm->sg = NULL; 1933 prm->seg_cnt = -1; 1934 prm->req_cnt = 1; 1935 prm->add_status_pkt = 0; 1936 1937 /* Send marker if required */ 1938 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 1939 return -EFAULT; 1940 1941 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 1942 if (qlt_pci_map_calc_cnt(prm) != 0) 1943 return -EAGAIN; 1944 } 1945 1946 *full_req_cnt = prm->req_cnt; 1947 1948 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 1949 prm->residual = se_cmd->residual_count; 1950 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c, 1951 "Residual underflow: %d (tag %d, " 1952 "op %x, bufflen %d, rq_result %x)\n", prm->residual, 1953 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 1954 cmd->bufflen, prm->rq_result); 1955 prm->rq_result |= SS_RESIDUAL_UNDER; 1956 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 1957 prm->residual = se_cmd->residual_count; 1958 ql_dbg(ql_dbg_io, vha, 0x305d, 1959 "Residual overflow: %d (tag %d, " 1960 "op %x, bufflen %d, rq_result %x)\n", prm->residual, 1961 cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 1962 cmd->bufflen, prm->rq_result); 1963 prm->rq_result |= SS_RESIDUAL_OVER; 1964 } 1965 1966 if (xmit_type & QLA_TGT_XMIT_STATUS) { 1967 /* 1968 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 1969 * ignored in *xmit_response() below 1970 */ 1971 if (qlt_has_data(cmd)) { 1972 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 1973 (IS_FWI2_CAPABLE(ha) && 1974 (prm->rq_result != 0))) { 1975 prm->add_status_pkt = 1; 1976 (*full_req_cnt)++; 1977 } 1978 } 1979 } 1980 1981 return 0; 1982} 1983 1984static inline int qlt_need_explicit_conf(struct qla_hw_data *ha, 1985 struct qla_tgt_cmd *cmd, int sending_sense) 1986{ 1987 if (ha->tgt.enable_class_2) 1988 return 0; 1989 1990 if (sending_sense) 1991 return cmd->conf_compl_supported; 1992 else 1993 return ha->tgt.enable_explicit_conf && 1994 cmd->conf_compl_supported; 1995} 1996 1997#ifdef CONFIG_QLA_TGT_DEBUG_SRR 1998/* 1999 * Original taken from the XFS code 2000 */ 2001static unsigned long qlt_srr_random(void) 2002{ 2003 static int Inited; 2004 static unsigned long RandomValue; 2005 static DEFINE_SPINLOCK(lock); 2006 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ 2007 register long rv; 2008 register long lo; 2009 register long hi; 2010 unsigned long flags; 2011 2012 spin_lock_irqsave(&lock, flags); 2013 if (!Inited) { 2014 RandomValue = jiffies; 2015 Inited = 1; 2016 } 2017 rv = RandomValue; 2018 hi = rv / 127773; 2019 lo = rv % 127773; 2020 rv = 16807 * lo - 2836 * hi; 2021 if (rv <= 0) 2022 rv += 2147483647; 2023 RandomValue = rv; 2024 spin_unlock_irqrestore(&lock, flags); 2025 return rv; 2026} 2027 2028static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) 2029{ 2030#if 0 /* This is not a real status packets lost, so it won't lead to SRR */ 2031 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200) 2032 == 50) { 2033 *xmit_type &= ~QLA_TGT_XMIT_STATUS; 2034 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015, 2035 "Dropping cmd %p (tag %d) status", cmd, cmd->tag); 2036 } 2037#endif 2038 /* 2039 * It's currently not possible to simulate SRRs for FCP_WRITE without 2040 * a physical link layer failure, so don't even try here.. 2041 */ 2042 if (cmd->dma_data_direction != DMA_FROM_DEVICE) 2043 return; 2044 2045 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) && 2046 ((qlt_srr_random() % 100) == 20)) { 2047 int i, leave = 0; 2048 unsigned int tot_len = 0; 2049 2050 while (leave == 0) 2051 leave = qlt_srr_random() % cmd->sg_cnt; 2052 2053 for (i = 0; i < leave; i++) 2054 tot_len += cmd->sg[i].length; 2055 2056 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016, 2057 "Cutting cmd %p (tag %d) buffer" 2058 " tail to len %d, sg_cnt %d (cmd->bufflen %d," 2059 " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave, 2060 cmd->bufflen, cmd->sg_cnt); 2061 2062 cmd->bufflen = tot_len; 2063 cmd->sg_cnt = leave; 2064 } 2065 2066 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) { 2067 unsigned int offset = qlt_srr_random() % cmd->bufflen; 2068 2069 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017, 2070 "Cutting cmd %p (tag %d) buffer head " 2071 "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset, 2072 cmd->bufflen); 2073 if (offset == 0) 2074 *xmit_type &= ~QLA_TGT_XMIT_DATA; 2075 else if (qlt_set_data_offset(cmd, offset)) { 2076 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018, 2077 "qlt_set_data_offset() failed (tag %d)", cmd->tag); 2078 } 2079 } 2080} 2081#else 2082static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) 2083{} 2084#endif 2085 2086static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2087 struct qla_tgt_prm *prm) 2088{ 2089 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2090 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2091 ctio->u.status0.flags |= 2092 __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2093 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) { 2094 ctio->u.status0.flags |= __constant_cpu_to_le16( 2095 CTIO7_FLAGS_EXPLICIT_CONFORM | 2096 CTIO7_FLAGS_CONFORM_REQ); 2097 } 2098 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2099 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2100 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2101 int i; 2102 2103 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) { 2104 if (prm->cmd->se_cmd.scsi_status != 0) { 2105 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, 2106 "Skipping EXPLICIT_CONFORM and " 2107 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2108 "non GOOD status\n"); 2109 goto skip_explict_conf; 2110 } 2111 ctio->u.status1.flags |= __constant_cpu_to_le16( 2112 CTIO7_FLAGS_EXPLICIT_CONFORM | 2113 CTIO7_FLAGS_CONFORM_REQ); 2114 } 2115skip_explict_conf: 2116 ctio->u.status1.flags &= 2117 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2118 ctio->u.status1.flags |= 2119 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2120 ctio->u.status1.scsi_status |= 2121 __constant_cpu_to_le16(SS_SENSE_LEN_VALID); 2122 ctio->u.status1.sense_length = 2123 cpu_to_le16(prm->sense_buffer_len); 2124 for (i = 0; i < prm->sense_buffer_len/4; i++) 2125 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2126 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2127#if 0 2128 if (unlikely((prm->sense_buffer_len % 4) != 0)) { 2129 static int q; 2130 if (q < 10) { 2131 ql_dbg(ql_dbg_tgt, vha, 0xe04f, 2132 "qla_target(%d): %d bytes of sense " 2133 "lost", prm->tgt->ha->vp_idx, 2134 prm->sense_buffer_len % 4); 2135 q++; 2136 } 2137 } 2138#endif 2139 } else { 2140 ctio->u.status1.flags &= 2141 ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2142 ctio->u.status1.flags |= 2143 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2144 ctio->u.status1.sense_length = 0; 2145 memset(ctio->u.status1.sense_data, 0, 2146 sizeof(ctio->u.status1.sense_data)); 2147 } 2148 2149 /* Sense with len > 24, is it possible ??? */ 2150} 2151 2152 2153 2154/* diff */ 2155static inline int 2156qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2157{ 2158 /* 2159 * Uncomment when corresponding SCSI changes are done. 2160 * 2161 if (!sp->cmd->prot_chk) 2162 return 0; 2163 * 2164 */ 2165 switch (se_cmd->prot_op) { 2166 case TARGET_PROT_DOUT_INSERT: 2167 case TARGET_PROT_DIN_STRIP: 2168 if (ql2xenablehba_err_chk >= 1) 2169 return 1; 2170 break; 2171 case TARGET_PROT_DOUT_PASS: 2172 case TARGET_PROT_DIN_PASS: 2173 if (ql2xenablehba_err_chk >= 2) 2174 return 1; 2175 break; 2176 case TARGET_PROT_DIN_INSERT: 2177 case TARGET_PROT_DOUT_STRIP: 2178 return 1; 2179 default: 2180 break; 2181 } 2182 return 0; 2183} 2184 2185/* 2186 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 2187 * 2188 */ 2189static inline void 2190qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx) 2191{ 2192 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2193 2194 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2 2195 * have been immplemented by TCM, before AppTag is avail. 2196 * Look for modesense_handlers[] 2197 */ 2198 ctx->app_tag = 0; 2199 ctx->app_tag_mask[0] = 0x0; 2200 ctx->app_tag_mask[1] = 0x0; 2201 2202 switch (se_cmd->prot_type) { 2203 case TARGET_DIF_TYPE0_PROT: 2204 /* 2205 * No check for ql2xenablehba_err_chk, as it would be an 2206 * I/O error if hba tag generation is not done. 2207 */ 2208 ctx->ref_tag = cpu_to_le32(lba); 2209 2210 if (!qlt_hba_err_chk_enabled(se_cmd)) 2211 break; 2212 2213 /* enable ALL bytes of the ref tag */ 2214 ctx->ref_tag_mask[0] = 0xff; 2215 ctx->ref_tag_mask[1] = 0xff; 2216 ctx->ref_tag_mask[2] = 0xff; 2217 ctx->ref_tag_mask[3] = 0xff; 2218 break; 2219 /* 2220 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 2221 * 16 bit app tag. 2222 */ 2223 case TARGET_DIF_TYPE1_PROT: 2224 ctx->ref_tag = cpu_to_le32(lba); 2225 2226 if (!qlt_hba_err_chk_enabled(se_cmd)) 2227 break; 2228 2229 /* enable ALL bytes of the ref tag */ 2230 ctx->ref_tag_mask[0] = 0xff; 2231 ctx->ref_tag_mask[1] = 0xff; 2232 ctx->ref_tag_mask[2] = 0xff; 2233 ctx->ref_tag_mask[3] = 0xff; 2234 break; 2235 /* 2236 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 2237 * match LBA in CDB + N 2238 */ 2239 case TARGET_DIF_TYPE2_PROT: 2240 ctx->ref_tag = cpu_to_le32(lba); 2241 2242 if (!qlt_hba_err_chk_enabled(se_cmd)) 2243 break; 2244 2245 /* enable ALL bytes of the ref tag */ 2246 ctx->ref_tag_mask[0] = 0xff; 2247 ctx->ref_tag_mask[1] = 0xff; 2248 ctx->ref_tag_mask[2] = 0xff; 2249 ctx->ref_tag_mask[3] = 0xff; 2250 break; 2251 2252 /* For Type 3 protection: 16 bit GUARD only */ 2253 case TARGET_DIF_TYPE3_PROT: 2254 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2255 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2256 break; 2257 } 2258} 2259 2260 2261static inline int 2262qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha) 2263{ 2264 uint32_t *cur_dsd; 2265 int sgc; 2266 uint32_t transfer_length = 0; 2267 uint32_t data_bytes; 2268 uint32_t dif_bytes; 2269 uint8_t bundling = 1; 2270 uint8_t *clr_ptr; 2271 struct crc_context *crc_ctx_pkt = NULL; 2272 struct qla_hw_data *ha; 2273 struct ctio_crc2_to_fw *pkt; 2274 dma_addr_t crc_ctx_dma; 2275 uint16_t fw_prot_opts = 0; 2276 struct qla_tgt_cmd *cmd = prm->cmd; 2277 struct se_cmd *se_cmd = &cmd->se_cmd; 2278 uint32_t h; 2279 struct atio_from_isp *atio = &prm->cmd->atio; 2280 uint16_t t16; 2281 2282 sgc = 0; 2283 ha = vha->hw; 2284 2285 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr; 2286 prm->pkt = pkt; 2287 memset(pkt, 0, sizeof(*pkt)); 2288 2289 ql_dbg(ql_dbg_tgt, vha, 0xe071, 2290 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2291 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2292 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2293 2294 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2295 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2296 bundling = 0; 2297 2298 /* Compute dif len and adjust data len to incude protection */ 2299 data_bytes = cmd->bufflen; 2300 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2301 2302 switch (se_cmd->prot_op) { 2303 case TARGET_PROT_DIN_INSERT: 2304 case TARGET_PROT_DOUT_STRIP: 2305 transfer_length = data_bytes; 2306 data_bytes += dif_bytes; 2307 break; 2308 2309 case TARGET_PROT_DIN_STRIP: 2310 case TARGET_PROT_DOUT_INSERT: 2311 case TARGET_PROT_DIN_PASS: 2312 case TARGET_PROT_DOUT_PASS: 2313 transfer_length = data_bytes + dif_bytes; 2314 break; 2315 2316 default: 2317 BUG(); 2318 break; 2319 } 2320 2321 if (!qlt_hba_err_chk_enabled(se_cmd)) 2322 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2323 /* HBA error checking enabled */ 2324 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2325 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2326 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2327 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 2328 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2329 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2330 } 2331 2332 switch (se_cmd->prot_op) { 2333 case TARGET_PROT_DIN_INSERT: 2334 case TARGET_PROT_DOUT_INSERT: 2335 fw_prot_opts |= PO_MODE_DIF_INSERT; 2336 break; 2337 case TARGET_PROT_DIN_STRIP: 2338 case TARGET_PROT_DOUT_STRIP: 2339 fw_prot_opts |= PO_MODE_DIF_REMOVE; 2340 break; 2341 case TARGET_PROT_DIN_PASS: 2342 case TARGET_PROT_DOUT_PASS: 2343 fw_prot_opts |= PO_MODE_DIF_PASS; 2344 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 2345 break; 2346 default:/* Normal Request */ 2347 fw_prot_opts |= PO_MODE_DIF_PASS; 2348 break; 2349 } 2350 2351 2352 /* ---- PKT ---- */ 2353 /* Update entry type to indicate Command Type CRC_2 IOCB */ 2354 pkt->entry_type = CTIO_CRC2; 2355 pkt->entry_count = 1; 2356 pkt->vp_index = vha->vp_idx; 2357 2358 h = qlt_make_handle(vha); 2359 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2360 /* 2361 * CTIO type 7 from the firmware doesn't provide a way to 2362 * know the initiator's LOOP ID, hence we can't find 2363 * the session and, so, the command. 2364 */ 2365 return -EAGAIN; 2366 } else 2367 ha->tgt.cmds[h-1] = prm->cmd; 2368 2369 2370 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 2371 pkt->nport_handle = prm->cmd->loop_id; 2372 pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); 2373 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2374 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2375 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2376 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2377 2378 /* silence compile warning */ 2379 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2380 pkt->ox_id = cpu_to_le16(t16); 2381 2382 t16 = (atio->u.isp24.attr << 9); 2383 pkt->flags |= cpu_to_le16(t16); 2384 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 2385 2386 /* Set transfer direction */ 2387 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2388 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN); 2389 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2390 pkt->flags = __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 2391 2392 2393 pkt->dseg_count = prm->tot_dsds; 2394 /* Fibre channel byte count */ 2395 pkt->transfer_length = cpu_to_le32(transfer_length); 2396 2397 2398 /* ----- CRC context -------- */ 2399 2400 /* Allocate CRC context from global pool */ 2401 crc_ctx_pkt = cmd->ctx = 2402 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 2403 2404 if (!crc_ctx_pkt) 2405 goto crc_queuing_error; 2406 2407 /* Zero out CTX area. */ 2408 clr_ptr = (uint8_t *)crc_ctx_pkt; 2409 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 2410 2411 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 2412 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 2413 2414 /* Set handle */ 2415 crc_ctx_pkt->handle = pkt->handle; 2416 2417 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt); 2418 2419 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 2420 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 2421 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 2422 2423 2424 if (!bundling) { 2425 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 2426 } else { 2427 /* 2428 * Configure Bundling if we need to fetch interlaving 2429 * protection PCI accesses 2430 */ 2431 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 2432 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 2433 crc_ctx_pkt->u.bundling.dseg_count = 2434 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 2435 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 2436 } 2437 2438 /* Finish the common fields of CRC pkt */ 2439 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 2440 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 2441 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 2442 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0); 2443 2444 2445 /* Walks data segments */ 2446 pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 2447 2448 if (!bundling && prm->prot_seg_cnt) { 2449 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 2450 prm->tot_dsds, cmd)) 2451 goto crc_queuing_error; 2452 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 2453 (prm->tot_dsds - prm->prot_seg_cnt), cmd)) 2454 goto crc_queuing_error; 2455 2456 if (bundling && prm->prot_seg_cnt) { 2457 /* Walks dif segments */ 2458 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 2459 2460 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 2461 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 2462 prm->prot_seg_cnt, cmd)) 2463 goto crc_queuing_error; 2464 } 2465 return QLA_SUCCESS; 2466 2467crc_queuing_error: 2468 /* Cleanup will be performed by the caller */ 2469 2470 return QLA_FUNCTION_FAILED; 2471} 2472 2473 2474/* 2475 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 2476 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 2477 */ 2478int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 2479 uint8_t scsi_status) 2480{ 2481 struct scsi_qla_host *vha = cmd->vha; 2482 struct qla_hw_data *ha = vha->hw; 2483 struct ctio7_to_24xx *pkt; 2484 struct qla_tgt_prm prm; 2485 uint32_t full_req_cnt = 0; 2486 unsigned long flags = 0; 2487 int res; 2488 2489 spin_lock_irqsave(&ha->hardware_lock, flags); 2490 if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 2491 cmd->state = QLA_TGT_STATE_PROCESSED; 2492 if (cmd->sess->logout_completed) 2493 /* no need to terminate. FW already freed exchange. */ 2494 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2495 else 2496 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); 2497 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2498 return 0; 2499 } 2500 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2501 2502 memset(&prm, 0, sizeof(prm)); 2503 qlt_check_srr_debug(cmd, &xmit_type); 2504 2505 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, 2506 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n", 2507 (xmit_type & QLA_TGT_XMIT_STATUS) ? 2508 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 2509 &cmd->se_cmd); 2510 2511 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 2512 &full_req_cnt); 2513 if (unlikely(res != 0)) { 2514 return res; 2515 } 2516 2517 spin_lock_irqsave(&ha->hardware_lock, flags); 2518 2519 if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) { 2520 /* 2521 * Either a chip reset is active or this request was from 2522 * previous life, just abort the processing. 2523 */ 2524 cmd->state = QLA_TGT_STATE_PROCESSED; 2525 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2526 ql_dbg(ql_dbg_async, vha, 0xe101, 2527 "RESET-RSP active/old-count/new-count = %d/%d/%d.\n", 2528 qla2x00_reset_active(vha), cmd->reset_count, 2529 ha->chip_reset); 2530 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2531 return 0; 2532 } 2533 2534 /* Does F/W have an IOCBs for this request */ 2535 res = qlt_check_reserve_free_req(vha, full_req_cnt); 2536 if (unlikely(res)) 2537 goto out_unmap_unlock; 2538 2539 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 2540 res = qlt_build_ctio_crc2_pkt(&prm, vha); 2541 else 2542 res = qlt_24xx_build_ctio_pkt(&prm, vha); 2543 if (unlikely(res != 0)) { 2544 vha->req->cnt += full_req_cnt; 2545 goto out_unmap_unlock; 2546 } 2547 2548 pkt = (struct ctio7_to_24xx *)prm.pkt; 2549 2550 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 2551 pkt->u.status0.flags |= 2552 __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN | 2553 CTIO7_FLAGS_STATUS_MODE_0); 2554 2555 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 2556 qlt_load_data_segments(&prm, vha); 2557 2558 if (prm.add_status_pkt == 0) { 2559 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2560 pkt->u.status0.scsi_status = 2561 cpu_to_le16(prm.rq_result); 2562 pkt->u.status0.residual = 2563 cpu_to_le32(prm.residual); 2564 pkt->u.status0.flags |= __constant_cpu_to_le16( 2565 CTIO7_FLAGS_SEND_STATUS); 2566 if (qlt_need_explicit_conf(ha, cmd, 0)) { 2567 pkt->u.status0.flags |= 2568 __constant_cpu_to_le16( 2569 CTIO7_FLAGS_EXPLICIT_CONFORM | 2570 CTIO7_FLAGS_CONFORM_REQ); 2571 } 2572 } 2573 2574 } else { 2575 /* 2576 * We have already made sure that there is sufficient 2577 * amount of request entries to not drop HW lock in 2578 * req_pkt(). 2579 */ 2580 struct ctio7_to_24xx *ctio = 2581 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha); 2582 2583 ql_dbg(ql_dbg_io, vha, 0x305e, 2584 "Building additional status packet 0x%p.\n", 2585 ctio); 2586 2587 /* 2588 * T10Dif: ctio_crc2_to_fw overlay ontop of 2589 * ctio7_to_24xx 2590 */ 2591 memcpy(ctio, pkt, sizeof(*ctio)); 2592 /* reset back to CTIO7 */ 2593 ctio->entry_count = 1; 2594 ctio->entry_type = CTIO_TYPE7; 2595 ctio->dseg_count = 0; 2596 ctio->u.status1.flags &= ~__constant_cpu_to_le16( 2597 CTIO7_FLAGS_DATA_IN); 2598 2599 /* Real finish is ctio_m1's finish */ 2600 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 2601 pkt->u.status0.flags |= __constant_cpu_to_le16( 2602 CTIO7_FLAGS_DONT_RET_CTIO); 2603 2604 /* qlt_24xx_init_ctio_to_isp will correct 2605 * all neccessary fields that's part of CTIO7. 2606 * There should be no residual of CTIO-CRC2 data. 2607 */ 2608 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 2609 &prm); 2610 pr_debug("Status CTIO7: %p\n", ctio); 2611 } 2612 } else 2613 qlt_24xx_init_ctio_to_isp(pkt, &prm); 2614 2615 2616 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 2617 cmd->cmd_sent_to_fw = 1; 2618 2619 /* Memory Barrier */ 2620 wmb(); 2621 qla2x00_start_iocbs(vha, vha->req); 2622 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2623 2624 return 0; 2625 2626out_unmap_unlock: 2627 qlt_unmap_sg(vha, cmd); 2628 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2629 2630 return res; 2631} 2632EXPORT_SYMBOL(qlt_xmit_response); 2633 2634int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 2635{ 2636 struct ctio7_to_24xx *pkt; 2637 struct scsi_qla_host *vha = cmd->vha; 2638 struct qla_hw_data *ha = vha->hw; 2639 struct qla_tgt *tgt = cmd->tgt; 2640 struct qla_tgt_prm prm; 2641 unsigned long flags; 2642 int res = 0; 2643 2644 memset(&prm, 0, sizeof(prm)); 2645 prm.cmd = cmd; 2646 prm.tgt = tgt; 2647 prm.sg = NULL; 2648 prm.req_cnt = 1; 2649 2650 /* Send marker if required */ 2651 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 2652 return -EIO; 2653 2654 /* Calculate number of entries and segments required */ 2655 if (qlt_pci_map_calc_cnt(&prm) != 0) 2656 return -EAGAIN; 2657 2658 spin_lock_irqsave(&ha->hardware_lock, flags); 2659 2660 if (qla2x00_reset_active(vha) || (cmd->reset_count != ha->chip_reset) || 2661 (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) { 2662 /* 2663 * Either a chip reset is active or this request was from 2664 * previous life, just abort the processing. 2665 */ 2666 cmd->state = QLA_TGT_STATE_NEED_DATA; 2667 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2668 ql_dbg(ql_dbg_async, vha, 0xe102, 2669 "RESET-XFR active/old-count/new-count = %d/%d/%d.\n", 2670 qla2x00_reset_active(vha), cmd->reset_count, 2671 ha->chip_reset); 2672 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2673 return 0; 2674 } 2675 2676 /* Does F/W have an IOCBs for this request */ 2677 res = qlt_check_reserve_free_req(vha, prm.req_cnt); 2678 if (res != 0) 2679 goto out_unlock_free_unmap; 2680 if (cmd->se_cmd.prot_op) 2681 res = qlt_build_ctio_crc2_pkt(&prm, vha); 2682 else 2683 res = qlt_24xx_build_ctio_pkt(&prm, vha); 2684 2685 if (unlikely(res != 0)) { 2686 vha->req->cnt += prm.req_cnt; 2687 goto out_unlock_free_unmap; 2688 } 2689 2690 pkt = (struct ctio7_to_24xx *)prm.pkt; 2691 pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 2692 CTIO7_FLAGS_STATUS_MODE_0); 2693 2694 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 2695 qlt_load_data_segments(&prm, vha); 2696 2697 cmd->state = QLA_TGT_STATE_NEED_DATA; 2698 cmd->cmd_sent_to_fw = 1; 2699 2700 /* Memory Barrier */ 2701 wmb(); 2702 qla2x00_start_iocbs(vha, vha->req); 2703 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2704 2705 return res; 2706 2707out_unlock_free_unmap: 2708 qlt_unmap_sg(vha, cmd); 2709 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2710 2711 return res; 2712} 2713EXPORT_SYMBOL(qlt_rdy_to_xfer); 2714 2715 2716/* 2717 * Checks the guard or meta-data for the type of error 2718 * detected by the HBA. 2719 */ 2720static inline int 2721qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd, 2722 struct ctio_crc_from_fw *sts) 2723{ 2724 uint8_t *ap = &sts->actual_dif[0]; 2725 uint8_t *ep = &sts->expected_dif[0]; 2726 uint32_t e_ref_tag, a_ref_tag; 2727 uint16_t e_app_tag, a_app_tag; 2728 uint16_t e_guard, a_guard; 2729 uint64_t lba = cmd->se_cmd.t_task_lba; 2730 2731 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 2732 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 2733 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 2734 2735 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 2736 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 2737 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 2738 2739 ql_dbg(ql_dbg_tgt, vha, 0xe075, 2740 "iocb(s) %p Returned STATUS.\n", sts); 2741 2742 ql_dbg(ql_dbg_tgt, vha, 0xf075, 2743 "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n", 2744 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 2745 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard); 2746 2747 /* 2748 * Ignore sector if: 2749 * For type 3: ref & app tag is all 'f's 2750 * For type 0,1,2: app tag is all 'f's 2751 */ 2752 if ((a_app_tag == 0xffff) && 2753 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) || 2754 (a_ref_tag == 0xffffffff))) { 2755 uint32_t blocks_done; 2756 2757 /* 2TB boundary case covered automatically with this */ 2758 blocks_done = e_ref_tag - (uint32_t)lba + 1; 2759 cmd->se_cmd.bad_sector = e_ref_tag; 2760 cmd->se_cmd.pi_err = 0; 2761 ql_dbg(ql_dbg_tgt, vha, 0xf074, 2762 "need to return scsi good\n"); 2763 2764 /* Update protection tag */ 2765 if (cmd->prot_sg_cnt) { 2766 uint32_t i, j = 0, k = 0, num_ent; 2767 struct scatterlist *sg, *sgl; 2768 2769 2770 sgl = cmd->prot_sg; 2771 2772 /* Patch the corresponding protection tags */ 2773 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) { 2774 num_ent = sg_dma_len(sg) / 8; 2775 if (k + num_ent < blocks_done) { 2776 k += num_ent; 2777 continue; 2778 } 2779 j = blocks_done - k - 1; 2780 k = blocks_done; 2781 break; 2782 } 2783 2784 if (k != blocks_done) { 2785 ql_log(ql_log_warn, vha, 0xf076, 2786 "unexpected tag values tag:lba=%u:%llu)\n", 2787 e_ref_tag, (unsigned long long)lba); 2788 goto out; 2789 } 2790 2791#if 0 2792 struct sd_dif_tuple *spt; 2793 /* TODO: 2794 * This section came from initiator. Is it valid here? 2795 * should ulp be override with actual val??? 2796 */ 2797 spt = page_address(sg_page(sg)) + sg->offset; 2798 spt += j; 2799 2800 spt->app_tag = 0xffff; 2801 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3) 2802 spt->ref_tag = 0xffffffff; 2803#endif 2804 } 2805 2806 return 0; 2807 } 2808 2809 /* check guard */ 2810 if (e_guard != a_guard) { 2811 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 2812 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba; 2813 2814 ql_log(ql_log_warn, vha, 0xe076, 2815 "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n", 2816 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 2817 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 2818 a_guard, e_guard, cmd); 2819 goto out; 2820 } 2821 2822 /* check ref tag */ 2823 if (e_ref_tag != a_ref_tag) { 2824 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 2825 cmd->se_cmd.bad_sector = e_ref_tag; 2826 2827 ql_log(ql_log_warn, vha, 0xe077, 2828 "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n", 2829 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 2830 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 2831 a_guard, e_guard, cmd); 2832 goto out; 2833 } 2834 2835 /* check appl tag */ 2836 if (e_app_tag != a_app_tag) { 2837 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 2838 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba; 2839 2840 ql_log(ql_log_warn, vha, 0xe078, 2841 "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n", 2842 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 2843 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 2844 a_guard, e_guard, cmd); 2845 goto out; 2846 } 2847out: 2848 return 1; 2849} 2850 2851 2852/* If hardware_lock held on entry, might drop it, then reaquire */ 2853/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 2854static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 2855 struct imm_ntfy_from_isp *ntfy) 2856{ 2857 struct nack_to_isp *nack; 2858 struct qla_hw_data *ha = vha->hw; 2859 request_t *pkt; 2860 int ret = 0; 2861 2862 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 2863 "Sending TERM ELS CTIO (ha=%p)\n", ha); 2864 2865 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 2866 if (pkt == NULL) { 2867 ql_dbg(ql_dbg_tgt, vha, 0xe080, 2868 "qla_target(%d): %s failed: unable to allocate " 2869 "request packet\n", vha->vp_idx, __func__); 2870 return -ENOMEM; 2871 } 2872 2873 pkt->entry_type = NOTIFY_ACK_TYPE; 2874 pkt->entry_count = 1; 2875 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2876 2877 nack = (struct nack_to_isp *)pkt; 2878 nack->ox_id = ntfy->ox_id; 2879 2880 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 2881 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 2882 nack->u.isp24.flags = ntfy->u.isp24.flags & 2883 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 2884 } 2885 2886 /* terminate */ 2887 nack->u.isp24.flags |= 2888 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 2889 2890 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 2891 nack->u.isp24.status = ntfy->u.isp24.status; 2892 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 2893 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 2894 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 2895 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 2896 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 2897 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 2898 2899 qla2x00_start_iocbs(vha, vha->req); 2900 return ret; 2901} 2902 2903static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 2904 struct imm_ntfy_from_isp *imm, int ha_locked) 2905{ 2906 unsigned long flags = 0; 2907 int rc; 2908 2909 if (qlt_issue_marker(vha, ha_locked) < 0) 2910 return; 2911 2912 if (ha_locked) { 2913 rc = __qlt_send_term_imm_notif(vha, imm); 2914 2915#if 0 /* Todo */ 2916 if (rc == -ENOMEM) 2917 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 2918#endif 2919 goto done; 2920 } 2921 2922 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 2923 rc = __qlt_send_term_imm_notif(vha, imm); 2924 2925#if 0 /* Todo */ 2926 if (rc == -ENOMEM) 2927 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 2928#endif 2929 2930done: 2931 if (!ha_locked) 2932 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 2933} 2934 2935/* If hardware_lock held on entry, might drop it, then reaquire */ 2936/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 2937static int __qlt_send_term_exchange(struct scsi_qla_host *vha, 2938 struct qla_tgt_cmd *cmd, 2939 struct atio_from_isp *atio) 2940{ 2941 struct ctio7_to_24xx *ctio24; 2942 struct qla_hw_data *ha = vha->hw; 2943 request_t *pkt; 2944 int ret = 0; 2945 uint16_t temp; 2946 2947 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 2948 2949 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 2950 if (pkt == NULL) { 2951 ql_dbg(ql_dbg_tgt, vha, 0xe050, 2952 "qla_target(%d): %s failed: unable to allocate " 2953 "request packet\n", vha->vp_idx, __func__); 2954 return -ENOMEM; 2955 } 2956 2957 if (cmd != NULL) { 2958 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 2959 ql_dbg(ql_dbg_tgt, vha, 0xe051, 2960 "qla_target(%d): Terminating cmd %p with " 2961 "incorrect state %d\n", vha->vp_idx, cmd, 2962 cmd->state); 2963 } else 2964 ret = 1; 2965 } 2966 2967 pkt->entry_count = 1; 2968 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 2969 2970 ctio24 = (struct ctio7_to_24xx *)pkt; 2971 ctio24->entry_type = CTIO_TYPE7; 2972 ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED; 2973 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); 2974 ctio24->vp_index = vha->vp_idx; 2975 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2976 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2977 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2978 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 2979 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 2980 __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 2981 CTIO7_FLAGS_TERMINATE); 2982 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2983 ctio24->u.status1.ox_id = cpu_to_le16(temp); 2984 2985 /* Most likely, it isn't needed */ 2986 ctio24->u.status1.residual = get_unaligned((uint32_t *) 2987 &atio->u.isp24.fcp_cmnd.add_cdb[ 2988 atio->u.isp24.fcp_cmnd.add_cdb_len]); 2989 if (ctio24->u.status1.residual != 0) 2990 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 2991 2992 /* Memory Barrier */ 2993 wmb(); 2994 qla2x00_start_iocbs(vha, vha->req); 2995 return ret; 2996} 2997 2998static void qlt_send_term_exchange(struct scsi_qla_host *vha, 2999 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked) 3000{ 3001 unsigned long flags = 0; 3002 int rc; 3003 3004 if (qlt_issue_marker(vha, ha_locked) < 0) 3005 return; 3006 3007 if (ha_locked) { 3008 rc = __qlt_send_term_exchange(vha, cmd, atio); 3009 if (rc == -ENOMEM) 3010 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3011 goto done; 3012 } 3013 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3014 rc = __qlt_send_term_exchange(vha, cmd, atio); 3015 if (rc == -ENOMEM) 3016 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3017 3018done: 3019 if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) || 3020 !cmd->cmd_sent_to_fw)) { 3021 if (cmd->sg_mapped) 3022 qlt_unmap_sg(vha, cmd); 3023 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3024 } 3025 3026 if (!ha_locked) 3027 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3028 3029 return; 3030} 3031 3032static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3033{ 3034 struct list_head free_list; 3035 struct qla_tgt_cmd *cmd, *tcmd; 3036 3037 vha->hw->tgt.leak_exchg_thresh_hold = 3038 (vha->hw->fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3039 3040 cmd = tcmd = NULL; 3041 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3042 INIT_LIST_HEAD(&free_list); 3043 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3044 3045 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3046 list_del(&cmd->cmd_list); 3047 /* This cmd was never sent to TCM. There is no need 3048 * to schedule free or call free_cmd 3049 */ 3050 qlt_free_cmd(cmd); 3051 vha->hw->tgt.num_qfull_cmds_alloc--; 3052 } 3053 } 3054 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3055} 3056 3057static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3058{ 3059 uint32_t total_leaked; 3060 3061 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3062 3063 if (vha->hw->tgt.leak_exchg_thresh_hold && 3064 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3065 3066 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3067 "Chip reset due to exchange starvation: %d/%d.\n", 3068 total_leaked, vha->hw->fw_xcb_count); 3069 3070 if (IS_P3P_TYPE(vha->hw)) 3071 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3072 else 3073 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3074 qla2xxx_wake_dpc(vha); 3075 } 3076 3077} 3078 3079void qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3080{ 3081 struct qla_tgt *tgt = cmd->tgt; 3082 struct scsi_qla_host *vha = tgt->vha; 3083 struct se_cmd *se_cmd = &cmd->se_cmd; 3084 3085 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3086 "qla_target(%d): terminating exchange for aborted cmd=%p " 3087 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3088 cmd->tag); 3089 3090 cmd->state = QLA_TGT_STATE_ABORTED; 3091 cmd->cmd_flags |= BIT_6; 3092 3093 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0); 3094} 3095EXPORT_SYMBOL(qlt_abort_cmd); 3096 3097void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3098{ 3099 struct qla_tgt_sess *sess = cmd->sess; 3100 3101 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3102 "%s: se_cmd[%p] ox_id %04x\n", 3103 __func__, &cmd->se_cmd, 3104 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3105 3106 BUG_ON(cmd->cmd_in_wq); 3107 3108 if (!cmd->q_full) 3109 qlt_decr_num_pend_cmds(cmd->vha); 3110 3111 BUG_ON(cmd->sg_mapped); 3112 cmd->jiffies_at_free = get_jiffies_64(); 3113 if (unlikely(cmd->free_sg)) 3114 kfree(cmd->sg); 3115 3116 if (!sess || !sess->se_sess) { 3117 WARN_ON(1); 3118 return; 3119 } 3120 cmd->jiffies_at_free = get_jiffies_64(); 3121 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3122} 3123EXPORT_SYMBOL(qlt_free_cmd); 3124 3125/* ha->hardware_lock supposed to be held on entry */ 3126static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha, 3127 struct qla_tgt_cmd *cmd, void *ctio) 3128{ 3129 struct qla_tgt_srr_ctio *sc; 3130 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3131 struct qla_tgt_srr_imm *imm; 3132 3133 tgt->ctio_srr_id++; 3134 cmd->cmd_flags |= BIT_15; 3135 3136 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 3137 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx); 3138 3139 if (!ctio) { 3140 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055, 3141 "qla_target(%d): SRR CTIO, but ctio is NULL\n", 3142 vha->vp_idx); 3143 return -EINVAL; 3144 } 3145 3146 sc = kzalloc(sizeof(*sc), GFP_ATOMIC); 3147 if (sc != NULL) { 3148 sc->cmd = cmd; 3149 /* IRQ is already OFF */ 3150 spin_lock(&tgt->srr_lock); 3151 sc->srr_id = tgt->ctio_srr_id; 3152 list_add_tail(&sc->srr_list_entry, 3153 &tgt->srr_ctio_list); 3154 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 3155 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id); 3156 if (tgt->imm_srr_id == tgt->ctio_srr_id) { 3157 int found = 0; 3158 list_for_each_entry(imm, &tgt->srr_imm_list, 3159 srr_list_entry) { 3160 if (imm->srr_id == sc->srr_id) { 3161 found = 1; 3162 break; 3163 } 3164 } 3165 if (found) { 3166 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b, 3167 "Scheduling srr work\n"); 3168 schedule_work(&tgt->srr_work); 3169 } else { 3170 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056, 3171 "qla_target(%d): imm_srr_id " 3172 "== ctio_srr_id (%d), but there is no " 3173 "corresponding SRR IMM, deleting CTIO " 3174 "SRR %p\n", vha->vp_idx, 3175 tgt->ctio_srr_id, sc); 3176 list_del(&sc->srr_list_entry); 3177 spin_unlock(&tgt->srr_lock); 3178 3179 kfree(sc); 3180 return -EINVAL; 3181 } 3182 } 3183 spin_unlock(&tgt->srr_lock); 3184 } else { 3185 struct qla_tgt_srr_imm *ti; 3186 3187 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057, 3188 "qla_target(%d): Unable to allocate SRR CTIO entry\n", 3189 vha->vp_idx); 3190 spin_lock(&tgt->srr_lock); 3191 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list, 3192 srr_list_entry) { 3193 if (imm->srr_id == tgt->ctio_srr_id) { 3194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c, 3195 "IMM SRR %p deleted (id %d)\n", 3196 imm, imm->srr_id); 3197 list_del(&imm->srr_list_entry); 3198 qlt_reject_free_srr_imm(vha, imm, 1); 3199 } 3200 } 3201 spin_unlock(&tgt->srr_lock); 3202 3203 return -ENOMEM; 3204 } 3205 3206 return 0; 3207} 3208 3209/* 3210 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3211 */ 3212static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, 3213 struct qla_tgt_cmd *cmd, uint32_t status) 3214{ 3215 int term = 0; 3216 3217 if (ctio != NULL) { 3218 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3219 term = !(c->flags & 3220 __constant_cpu_to_le16(OF_TERM_EXCH)); 3221 } else 3222 term = 1; 3223 3224 if (term) 3225 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); 3226 3227 return term; 3228} 3229 3230/* ha->hardware_lock supposed to be held on entry */ 3231static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha, 3232 uint32_t handle) 3233{ 3234 struct qla_hw_data *ha = vha->hw; 3235 3236 handle--; 3237 if (ha->tgt.cmds[handle] != NULL) { 3238 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle]; 3239 ha->tgt.cmds[handle] = NULL; 3240 return cmd; 3241 } else 3242 return NULL; 3243} 3244 3245/* ha->hardware_lock supposed to be held on entry */ 3246static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3247 uint32_t handle, void *ctio) 3248{ 3249 struct qla_tgt_cmd *cmd = NULL; 3250 3251 /* Clear out internal marks */ 3252 handle &= ~(CTIO_COMPLETION_HANDLE_MARK | 3253 CTIO_INTERMEDIATE_HANDLE_MARK); 3254 3255 if (handle != QLA_TGT_NULL_HANDLE) { 3256 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) 3257 return NULL; 3258 3259 /* handle-1 is actually used */ 3260 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) { 3261 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3262 "qla_target(%d): Wrong handle %x received\n", 3263 vha->vp_idx, handle); 3264 return NULL; 3265 } 3266 cmd = qlt_get_cmd(vha, handle); 3267 if (unlikely(cmd == NULL)) { 3268 ql_dbg(ql_dbg_tgt, vha, 0xe053, 3269 "qla_target(%d): Suspicious: unable to " 3270 "find the command with handle %x\n", vha->vp_idx, 3271 handle); 3272 return NULL; 3273 } 3274 } else if (ctio != NULL) { 3275 /* We can't get loop ID from CTIO7 */ 3276 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3277 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3278 "support NULL handles\n", vha->vp_idx); 3279 return NULL; 3280 } 3281 3282 return cmd; 3283} 3284 3285/* hardware_lock should be held by caller. */ 3286static void 3287qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3288{ 3289 struct qla_hw_data *ha = vha->hw; 3290 uint32_t handle; 3291 3292 if (cmd->sg_mapped) 3293 qlt_unmap_sg(vha, cmd); 3294 3295 handle = qlt_make_handle(vha); 3296 3297 /* TODO: fix debug message type and ids. */ 3298 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3299 ql_dbg(ql_dbg_io, vha, 0xff00, 3300 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle); 3301 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3302 cmd->write_data_transferred = 0; 3303 cmd->state = QLA_TGT_STATE_DATA_IN; 3304 3305 ql_dbg(ql_dbg_io, vha, 0xff01, 3306 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle); 3307 3308 ha->tgt.tgt_ops->handle_data(cmd); 3309 return; 3310 } else if (cmd->state == QLA_TGT_STATE_ABORTED) { 3311 ql_dbg(ql_dbg_io, vha, 0xff02, 3312 "HOST-ABORT: handle=%d, state=ABORTED.\n", handle); 3313 } else { 3314 ql_dbg(ql_dbg_io, vha, 0xff03, 3315 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle, 3316 cmd->state); 3317 dump_stack(); 3318 } 3319 3320 cmd->cmd_flags |= BIT_12; 3321 ha->tgt.tgt_ops->free_cmd(cmd); 3322} 3323 3324void 3325qlt_host_reset_handler(struct qla_hw_data *ha) 3326{ 3327 struct qla_tgt_cmd *cmd; 3328 unsigned long flags; 3329 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 3330 scsi_qla_host_t *vha = NULL; 3331 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt; 3332 uint32_t i; 3333 3334 if (!base_vha->hw->tgt.tgt_ops) 3335 return; 3336 3337 if (!tgt || qla_ini_mode_enabled(base_vha)) { 3338 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003, 3339 "Target mode disabled\n"); 3340 return; 3341 } 3342 3343 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10, 3344 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n", 3345 base_vha->dpc_flags); 3346 3347 spin_lock_irqsave(&ha->hardware_lock, flags); 3348 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) { 3349 cmd = qlt_get_cmd(base_vha, i); 3350 if (!cmd) 3351 continue; 3352 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */ 3353 vha = cmd->vha; 3354 qlt_abort_cmd_on_host_reset(vha, cmd); 3355 } 3356 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3357} 3358 3359 3360/* 3361 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3362 */ 3363static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, 3364 uint32_t status, void *ctio) 3365{ 3366 struct qla_hw_data *ha = vha->hw; 3367 struct se_cmd *se_cmd; 3368 const struct target_core_fabric_ops *tfo; 3369 struct qla_tgt_cmd *cmd; 3370 3371 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3372 /* That could happen only in case of an error/reset/abort */ 3373 if (status != CTIO_SUCCESS) { 3374 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3375 "Intermediate CTIO received" 3376 " (status %x)\n", status); 3377 } 3378 return; 3379 } 3380 3381 cmd = qlt_ctio_to_cmd(vha, handle, ctio); 3382 if (cmd == NULL) 3383 return; 3384 3385 se_cmd = &cmd->se_cmd; 3386 tfo = se_cmd->se_tfo; 3387 cmd->cmd_sent_to_fw = 0; 3388 3389 qlt_unmap_sg(vha, cmd); 3390 3391 if (unlikely(status != CTIO_SUCCESS)) { 3392 switch (status & 0xFFFF) { 3393 case CTIO_LIP_RESET: 3394 case CTIO_TARGET_RESET: 3395 case CTIO_ABORTED: 3396 /* driver request abort via Terminate exchange */ 3397 case CTIO_TIMEOUT: 3398 case CTIO_INVALID_RX_ID: 3399 /* They are OK */ 3400 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3401 "qla_target(%d): CTIO with " 3402 "status %#x received, state %x, se_cmd %p, " 3403 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3404 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3405 status, cmd->state, se_cmd); 3406 break; 3407 3408 case CTIO_PORT_LOGGED_OUT: 3409 case CTIO_PORT_UNAVAILABLE: 3410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3411 "qla_target(%d): CTIO with PORT LOGGED " 3412 "OUT (29) or PORT UNAVAILABLE (28) status %x " 3413 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3414 status, cmd->state, se_cmd); 3415 break; 3416 3417 case CTIO_SRR_RECEIVED: 3418 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a, 3419 "qla_target(%d): CTIO with SRR_RECEIVED" 3420 " status %x received (state %x, se_cmd %p)\n", 3421 vha->vp_idx, status, cmd->state, se_cmd); 3422 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0) 3423 break; 3424 else 3425 return; 3426 3427 case CTIO_DIF_ERROR: { 3428 struct ctio_crc_from_fw *crc = 3429 (struct ctio_crc_from_fw *)ctio; 3430 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3431 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n", 3432 vha->vp_idx, status, cmd->state, se_cmd, 3433 *((u64 *)&crc->actual_dif[0]), 3434 *((u64 *)&crc->expected_dif[0])); 3435 3436 if (qlt_handle_dif_error(vha, cmd, ctio)) { 3437 if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3438 /* scsi Write/xfer rdy complete */ 3439 goto skip_term; 3440 } else { 3441 /* scsi read/xmit respond complete 3442 * call handle dif to send scsi status 3443 * rather than terminate exchange. 3444 */ 3445 cmd->state = QLA_TGT_STATE_PROCESSED; 3446 ha->tgt.tgt_ops->handle_dif_err(cmd); 3447 return; 3448 } 3449 } else { 3450 /* Need to generate a SCSI good completion. 3451 * because FW did not send scsi status. 3452 */ 3453 status = 0; 3454 goto skip_term; 3455 } 3456 break; 3457 } 3458 default: 3459 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3460 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3461 vha->vp_idx, status, cmd->state, se_cmd); 3462 break; 3463 } 3464 3465 3466 /* "cmd->state == QLA_TGT_STATE_ABORTED" means 3467 * cmd is already aborted/terminated, we don't 3468 * need to terminate again. The exchange is already 3469 * cleaned up/freed at FW level. Just cleanup at driver 3470 * level. 3471 */ 3472 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 3473 (cmd->state != QLA_TGT_STATE_ABORTED)) { 3474 cmd->cmd_flags |= BIT_13; 3475 if (qlt_term_ctio_exchange(vha, ctio, cmd, status)) 3476 return; 3477 } 3478 } 3479skip_term: 3480 3481 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3482 ; 3483 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3484 int rx_status = 0; 3485 3486 cmd->state = QLA_TGT_STATE_DATA_IN; 3487 3488 if (unlikely(status != CTIO_SUCCESS)) 3489 rx_status = -EIO; 3490 else 3491 cmd->write_data_transferred = 1; 3492 3493 ha->tgt.tgt_ops->handle_data(cmd); 3494 return; 3495 } else if (cmd->state == QLA_TGT_STATE_ABORTED) { 3496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 3497 "Aborted command %p (tag %d) finished\n", cmd, cmd->tag); 3498 } else { 3499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 3500 "qla_target(%d): A command in state (%d) should " 3501 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 3502 } 3503 3504 if (unlikely(status != CTIO_SUCCESS) && 3505 (cmd->state != QLA_TGT_STATE_ABORTED)) { 3506 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 3507 dump_stack(); 3508 } 3509 3510 3511 ha->tgt.tgt_ops->free_cmd(cmd); 3512} 3513 3514static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 3515 uint8_t task_codes) 3516{ 3517 int fcp_task_attr; 3518 3519 switch (task_codes) { 3520 case ATIO_SIMPLE_QUEUE: 3521 fcp_task_attr = TCM_SIMPLE_TAG; 3522 break; 3523 case ATIO_HEAD_OF_QUEUE: 3524 fcp_task_attr = TCM_HEAD_TAG; 3525 break; 3526 case ATIO_ORDERED_QUEUE: 3527 fcp_task_attr = TCM_ORDERED_TAG; 3528 break; 3529 case ATIO_ACA_QUEUE: 3530 fcp_task_attr = TCM_ACA_TAG; 3531 break; 3532 case ATIO_UNTAGGED: 3533 fcp_task_attr = TCM_SIMPLE_TAG; 3534 break; 3535 default: 3536 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 3537 "qla_target: unknown task code %x, use ORDERED instead\n", 3538 task_codes); 3539 fcp_task_attr = TCM_ORDERED_TAG; 3540 break; 3541 } 3542 3543 return fcp_task_attr; 3544} 3545 3546static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *, 3547 uint8_t *); 3548/* 3549 * Process context for I/O path into tcm_qla2xxx code 3550 */ 3551static void __qlt_do_work(struct qla_tgt_cmd *cmd) 3552{ 3553 scsi_qla_host_t *vha = cmd->vha; 3554 struct qla_hw_data *ha = vha->hw; 3555 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3556 struct qla_tgt_sess *sess = cmd->sess; 3557 struct atio_from_isp *atio = &cmd->atio; 3558 unsigned char *cdb; 3559 unsigned long flags; 3560 uint32_t data_length; 3561 int ret, fcp_task_attr, data_dir, bidi = 0; 3562 3563 cmd->cmd_in_wq = 0; 3564 cmd->cmd_flags |= BIT_1; 3565 if (tgt->tgt_stop) 3566 goto out_term; 3567 3568 if (cmd->state == QLA_TGT_STATE_ABORTED) { 3569 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 3570 "cmd with tag %u is aborted\n", 3571 cmd->atio.u.isp24.exchange_addr); 3572 goto out_term; 3573 } 3574 3575 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 3576 cmd->tag = atio->u.isp24.exchange_addr; 3577 cmd->unpacked_lun = scsilun_to_int( 3578 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 3579 3580 if (atio->u.isp24.fcp_cmnd.rddata && 3581 atio->u.isp24.fcp_cmnd.wrdata) { 3582 bidi = 1; 3583 data_dir = DMA_TO_DEVICE; 3584 } else if (atio->u.isp24.fcp_cmnd.rddata) 3585 data_dir = DMA_FROM_DEVICE; 3586 else if (atio->u.isp24.fcp_cmnd.wrdata) 3587 data_dir = DMA_TO_DEVICE; 3588 else 3589 data_dir = DMA_NONE; 3590 3591 fcp_task_attr = qlt_get_fcp_task_attr(vha, 3592 atio->u.isp24.fcp_cmnd.task_attr); 3593 data_length = be32_to_cpu(get_unaligned((uint32_t *) 3594 &atio->u.isp24.fcp_cmnd.add_cdb[ 3595 atio->u.isp24.fcp_cmnd.add_cdb_len])); 3596 3597 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 3598 fcp_task_attr, data_dir, bidi); 3599 if (ret != 0) 3600 goto out_term; 3601 /* 3602 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 3603 */ 3604 spin_lock_irqsave(&ha->hardware_lock, flags); 3605 ha->tgt.tgt_ops->put_sess(sess); 3606 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3607 return; 3608 3609out_term: 3610 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 3611 /* 3612 * cmd has not sent to target yet, so pass NULL as the second 3613 * argument to qlt_send_term_exchange() and free the memory here. 3614 */ 3615 cmd->cmd_flags |= BIT_2; 3616 spin_lock_irqsave(&ha->hardware_lock, flags); 3617 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1); 3618 3619 qlt_decr_num_pend_cmds(vha); 3620 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3621 ha->tgt.tgt_ops->put_sess(sess); 3622 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3623} 3624 3625static void qlt_do_work(struct work_struct *work) 3626{ 3627 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 3628 scsi_qla_host_t *vha = cmd->vha; 3629 unsigned long flags; 3630 3631 spin_lock_irqsave(&vha->cmd_list_lock, flags); 3632 list_del(&cmd->cmd_list); 3633 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 3634 3635 __qlt_do_work(cmd); 3636} 3637 3638static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 3639 struct qla_tgt_sess *sess, 3640 struct atio_from_isp *atio) 3641{ 3642 struct se_session *se_sess = sess->se_sess; 3643 struct qla_tgt_cmd *cmd; 3644 int tag; 3645 3646 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 3647 if (tag < 0) 3648 return NULL; 3649 3650 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 3651 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 3652 3653 memcpy(&cmd->atio, atio, sizeof(*atio)); 3654 cmd->state = QLA_TGT_STATE_NEW; 3655 cmd->tgt = vha->vha_tgt.qla_tgt; 3656 qlt_incr_num_pend_cmds(vha); 3657 cmd->vha = vha; 3658 cmd->se_cmd.map_tag = tag; 3659 cmd->sess = sess; 3660 cmd->loop_id = sess->loop_id; 3661 cmd->conf_compl_supported = sess->conf_compl_supported; 3662 3663 cmd->cmd_flags = 0; 3664 cmd->jiffies_at_alloc = get_jiffies_64(); 3665 3666 cmd->reset_count = vha->hw->chip_reset; 3667 3668 return cmd; 3669} 3670 3671static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *, 3672 uint16_t); 3673 3674static void qlt_create_sess_from_atio(struct work_struct *work) 3675{ 3676 struct qla_tgt_sess_op *op = container_of(work, 3677 struct qla_tgt_sess_op, work); 3678 scsi_qla_host_t *vha = op->vha; 3679 struct qla_hw_data *ha = vha->hw; 3680 struct qla_tgt_sess *sess; 3681 struct qla_tgt_cmd *cmd; 3682 unsigned long flags; 3683 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id; 3684 3685 spin_lock_irqsave(&vha->cmd_list_lock, flags); 3686 list_del(&op->cmd_list); 3687 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 3688 3689 if (op->aborted) { 3690 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083, 3691 "sess_op with tag %u is aborted\n", 3692 op->atio.u.isp24.exchange_addr); 3693 goto out_term; 3694 } 3695 3696 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, 3697 "qla_target(%d): Unable to find wwn login" 3698 " (s_id %x:%x:%x), trying to create it manually\n", 3699 vha->vp_idx, s_id[0], s_id[1], s_id[2]); 3700 3701 if (op->atio.u.raw.entry_count > 1) { 3702 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, 3703 "Dropping multy entry atio %p\n", &op->atio); 3704 goto out_term; 3705 } 3706 3707 mutex_lock(&vha->vha_tgt.tgt_mutex); 3708 sess = qlt_make_local_sess(vha, s_id); 3709 /* sess has an extra creation ref. */ 3710 mutex_unlock(&vha->vha_tgt.tgt_mutex); 3711 3712 if (!sess) 3713 goto out_term; 3714 /* 3715 * Now obtain a pre-allocated session tag using the original op->atio 3716 * packet header, and dispatch into __qlt_do_work() using the existing 3717 * process context. 3718 */ 3719 cmd = qlt_get_tag(vha, sess, &op->atio); 3720 if (!cmd) { 3721 spin_lock_irqsave(&ha->hardware_lock, flags); 3722 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY); 3723 ha->tgt.tgt_ops->put_sess(sess); 3724 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3725 kfree(op); 3726 return; 3727 } 3728 /* 3729 * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release 3730 * the extra reference taken above by qlt_make_local_sess() 3731 */ 3732 __qlt_do_work(cmd); 3733 kfree(op); 3734 return; 3735 3736out_term: 3737 spin_lock_irqsave(&ha->hardware_lock, flags); 3738 qlt_send_term_exchange(vha, NULL, &op->atio, 1); 3739 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3740 kfree(op); 3741 3742} 3743 3744/* ha->hardware_lock supposed to be held on entry */ 3745static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 3746 struct atio_from_isp *atio) 3747{ 3748 struct qla_hw_data *ha = vha->hw; 3749 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3750 struct qla_tgt_sess *sess; 3751 struct qla_tgt_cmd *cmd; 3752 3753 if (unlikely(tgt->tgt_stop)) { 3754 ql_dbg(ql_dbg_io, vha, 0x3061, 3755 "New command while device %p is shutting down\n", tgt); 3756 return -EFAULT; 3757 } 3758 3759 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 3760 if (unlikely(!sess)) { 3761 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op), 3762 GFP_ATOMIC); 3763 if (!op) 3764 return -ENOMEM; 3765 3766 memcpy(&op->atio, atio, sizeof(*atio)); 3767 op->vha = vha; 3768 3769 spin_lock(&vha->cmd_list_lock); 3770 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list); 3771 spin_unlock(&vha->cmd_list_lock); 3772 3773 INIT_WORK(&op->work, qlt_create_sess_from_atio); 3774 queue_work(qla_tgt_wq, &op->work); 3775 return 0; 3776 } 3777 3778 /* Another WWN used to have our s_id. Our PLOGI scheduled its 3779 * session deletion, but it's still in sess_del_work wq */ 3780 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 3781 ql_dbg(ql_dbg_io, vha, 0x3061, 3782 "New command while old session %p is being deleted\n", 3783 sess); 3784 return -EFAULT; 3785 } 3786 3787 /* 3788 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 3789 */ 3790 kref_get(&sess->se_sess->sess_kref); 3791 3792 cmd = qlt_get_tag(vha, sess, atio); 3793 if (!cmd) { 3794 ql_dbg(ql_dbg_io, vha, 0x3062, 3795 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 3796 ha->tgt.tgt_ops->put_sess(sess); 3797 return -ENOMEM; 3798 } 3799 3800 cmd->cmd_in_wq = 1; 3801 cmd->cmd_flags |= BIT_0; 3802 3803 spin_lock(&vha->cmd_list_lock); 3804 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 3805 spin_unlock(&vha->cmd_list_lock); 3806 3807 INIT_WORK(&cmd->work, qlt_do_work); 3808 queue_work(qla_tgt_wq, &cmd->work); 3809 return 0; 3810 3811} 3812 3813/* ha->hardware_lock supposed to be held on entry */ 3814static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, 3815 int fn, void *iocb, int flags) 3816{ 3817 struct scsi_qla_host *vha = sess->vha; 3818 struct qla_hw_data *ha = vha->hw; 3819 struct qla_tgt_mgmt_cmd *mcmd; 3820 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 3821 int res; 3822 uint8_t tmr_func; 3823 3824 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 3825 if (!mcmd) { 3826 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 3827 "qla_target(%d): Allocation of management " 3828 "command failed, some commands and their data could " 3829 "leak\n", vha->vp_idx); 3830 return -ENOMEM; 3831 } 3832 memset(mcmd, 0, sizeof(*mcmd)); 3833 mcmd->sess = sess; 3834 3835 if (iocb) { 3836 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 3837 sizeof(mcmd->orig_iocb.imm_ntfy)); 3838 } 3839 mcmd->tmr_func = fn; 3840 mcmd->flags = flags; 3841 mcmd->reset_count = vha->hw->chip_reset; 3842 3843 switch (fn) { 3844 case QLA_TGT_CLEAR_ACA: 3845 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000, 3846 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx); 3847 tmr_func = TMR_CLEAR_ACA; 3848 break; 3849 3850 case QLA_TGT_TARGET_RESET: 3851 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001, 3852 "qla_target(%d): TARGET_RESET received\n", 3853 sess->vha->vp_idx); 3854 tmr_func = TMR_TARGET_WARM_RESET; 3855 break; 3856 3857 case QLA_TGT_LUN_RESET: 3858 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002, 3859 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx); 3860 tmr_func = TMR_LUN_RESET; 3861 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 3862 break; 3863 3864 case QLA_TGT_CLEAR_TS: 3865 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003, 3866 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx); 3867 tmr_func = TMR_CLEAR_TASK_SET; 3868 break; 3869 3870 case QLA_TGT_ABORT_TS: 3871 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004, 3872 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx); 3873 tmr_func = TMR_ABORT_TASK_SET; 3874 break; 3875#if 0 3876 case QLA_TGT_ABORT_ALL: 3877 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005, 3878 "qla_target(%d): Doing ABORT_ALL_TASKS\n", 3879 sess->vha->vp_idx); 3880 tmr_func = 0; 3881 break; 3882 3883 case QLA_TGT_ABORT_ALL_SESS: 3884 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006, 3885 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n", 3886 sess->vha->vp_idx); 3887 tmr_func = 0; 3888 break; 3889 3890 case QLA_TGT_NEXUS_LOSS_SESS: 3891 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007, 3892 "qla_target(%d): Doing NEXUS_LOSS_SESS\n", 3893 sess->vha->vp_idx); 3894 tmr_func = 0; 3895 break; 3896 3897 case QLA_TGT_NEXUS_LOSS: 3898 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008, 3899 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx); 3900 tmr_func = 0; 3901 break; 3902#endif 3903 default: 3904 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a, 3905 "qla_target(%d): Unknown task mgmt fn 0x%x\n", 3906 sess->vha->vp_idx, fn); 3907 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 3908 return -ENOSYS; 3909 } 3910 3911 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0); 3912 if (res != 0) { 3913 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, 3914 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", 3915 sess->vha->vp_idx, res); 3916 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 3917 return -EFAULT; 3918 } 3919 3920 return 0; 3921} 3922 3923/* ha->hardware_lock supposed to be held on entry */ 3924static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 3925{ 3926 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 3927 struct qla_hw_data *ha = vha->hw; 3928 struct qla_tgt *tgt; 3929 struct qla_tgt_sess *sess; 3930 uint32_t lun, unpacked_lun; 3931 int lun_size, fn; 3932 3933 tgt = vha->vha_tgt.qla_tgt; 3934 3935 lun = a->u.isp24.fcp_cmnd.lun; 3936 lun_size = sizeof(a->u.isp24.fcp_cmnd.lun); 3937 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 3938 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 3939 a->u.isp24.fcp_hdr.s_id); 3940 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 3941 3942 if (!sess) { 3943 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, 3944 "qla_target(%d): task mgmt fn 0x%x for " 3945 "non-existant session\n", vha->vp_idx, fn); 3946 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, 3947 sizeof(struct atio_from_isp)); 3948 } 3949 3950 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) 3951 return -EFAULT; 3952 3953 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 3954} 3955 3956/* ha->hardware_lock supposed to be held on entry */ 3957static int __qlt_abort_task(struct scsi_qla_host *vha, 3958 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess) 3959{ 3960 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 3961 struct qla_hw_data *ha = vha->hw; 3962 struct qla_tgt_mgmt_cmd *mcmd; 3963 uint32_t lun, unpacked_lun; 3964 int rc; 3965 3966 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 3967 if (mcmd == NULL) { 3968 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 3969 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 3970 vha->vp_idx, __func__); 3971 return -ENOMEM; 3972 } 3973 memset(mcmd, 0, sizeof(*mcmd)); 3974 3975 mcmd->sess = sess; 3976 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 3977 sizeof(mcmd->orig_iocb.imm_ntfy)); 3978 3979 lun = a->u.isp24.fcp_cmnd.lun; 3980 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 3981 mcmd->reset_count = vha->hw->chip_reset; 3982 3983 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK, 3984 le16_to_cpu(iocb->u.isp2x.seq_id)); 3985 if (rc != 0) { 3986 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 3987 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 3988 vha->vp_idx, rc); 3989 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 3990 return -EFAULT; 3991 } 3992 3993 return 0; 3994} 3995 3996/* ha->hardware_lock supposed to be held on entry */ 3997static int qlt_abort_task(struct scsi_qla_host *vha, 3998 struct imm_ntfy_from_isp *iocb) 3999{ 4000 struct qla_hw_data *ha = vha->hw; 4001 struct qla_tgt_sess *sess; 4002 int loop_id; 4003 4004 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4005 4006 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4007 if (sess == NULL) { 4008 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4009 "qla_target(%d): task abort for unexisting " 4010 "session\n", vha->vp_idx); 4011 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4012 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4013 } 4014 4015 return __qlt_abort_task(vha, iocb, sess); 4016} 4017 4018void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4019{ 4020 if (fcport->tgt_session) { 4021 if (rc != MBS_COMMAND_COMPLETE) { 4022 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4023 "%s: se_sess %p / sess %p from" 4024 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4025 " LOGO failed: %#x\n", 4026 __func__, 4027 fcport->tgt_session->se_sess, 4028 fcport->tgt_session, 4029 fcport->port_name, fcport->loop_id, 4030 fcport->d_id.b.domain, fcport->d_id.b.area, 4031 fcport->d_id.b.al_pa, rc); 4032 } 4033 4034 fcport->tgt_session->logout_completed = 1; 4035 } 4036} 4037 4038static void qlt_swap_imm_ntfy_iocb(struct imm_ntfy_from_isp *a, 4039 struct imm_ntfy_from_isp *b) 4040{ 4041 struct imm_ntfy_from_isp tmp; 4042 memcpy(&tmp, a, sizeof(struct imm_ntfy_from_isp)); 4043 memcpy(a, b, sizeof(struct imm_ntfy_from_isp)); 4044 memcpy(b, &tmp, sizeof(struct imm_ntfy_from_isp)); 4045} 4046 4047/* 4048* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4049* 4050* Schedules sessions with matching port_id/loop_id but different wwn for 4051* deletion. Returns existing session with matching wwn if present. 4052* Null otherwise. 4053*/ 4054static struct qla_tgt_sess * 4055qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn, 4056 port_id_t port_id, uint16_t loop_id) 4057{ 4058 struct qla_tgt_sess *sess = NULL, *other_sess; 4059 uint64_t other_wwn; 4060 4061 list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) { 4062 4063 other_wwn = wwn_to_u64(other_sess->port_name); 4064 4065 if (wwn == other_wwn) { 4066 WARN_ON(sess); 4067 sess = other_sess; 4068 continue; 4069 } 4070 4071 /* find other sess with nport_id collision */ 4072 if (port_id.b24 == other_sess->s_id.b24) { 4073 if (loop_id != other_sess->loop_id) { 4074 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c, 4075 "Invalidating sess %p loop_id %d wwn %llx.\n", 4076 other_sess, other_sess->loop_id, other_wwn); 4077 4078 /* 4079 * logout_on_delete is set by default, but another 4080 * session that has the same s_id/loop_id combo 4081 * might have cleared it when requested this session 4082 * deletion, so don't touch it 4083 */ 4084 qlt_schedule_sess_for_deletion(other_sess, true); 4085 } else { 4086 /* 4087 * Another wwn used to have our s_id/loop_id 4088 * combo - kill the session, but don't log out 4089 */ 4090 sess->logout_on_delete = 0; 4091 qlt_schedule_sess_for_deletion(other_sess, 4092 true); 4093 } 4094 continue; 4095 } 4096 4097 /* find other sess with nport handle collision */ 4098 if (loop_id == other_sess->loop_id) { 4099 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d, 4100 "Invalidating sess %p loop_id %d wwn %llx.\n", 4101 other_sess, other_sess->loop_id, other_wwn); 4102 4103 /* Same loop_id but different s_id 4104 * Ok to kill and logout */ 4105 qlt_schedule_sess_for_deletion(other_sess, true); 4106 } 4107 } 4108 4109 return sess; 4110} 4111 4112/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4113static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4114{ 4115 struct qla_tgt_sess_op *op; 4116 struct qla_tgt_cmd *cmd; 4117 uint32_t key; 4118 int count = 0; 4119 4120 key = (((u32)s_id->b.domain << 16) | 4121 ((u32)s_id->b.area << 8) | 4122 ((u32)s_id->b.al_pa)); 4123 4124 spin_lock(&vha->cmd_list_lock); 4125 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4126 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4127 if (op_key == key) { 4128 op->aborted = true; 4129 count++; 4130 } 4131 } 4132 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4133 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4134 if (cmd_key == key) { 4135 cmd->state = QLA_TGT_STATE_ABORTED; 4136 count++; 4137 } 4138 } 4139 spin_unlock(&vha->cmd_list_lock); 4140 4141 return count; 4142} 4143 4144/* 4145 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4146 */ 4147static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4148 struct imm_ntfy_from_isp *iocb) 4149{ 4150 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4151 struct qla_hw_data *ha = vha->hw; 4152 struct qla_tgt_sess *sess = NULL; 4153 uint64_t wwn; 4154 port_id_t port_id; 4155 uint16_t loop_id; 4156 uint16_t wd3_lo; 4157 int res = 0; 4158 4159 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4160 4161 port_id.b.domain = iocb->u.isp24.port_id[2]; 4162 port_id.b.area = iocb->u.isp24.port_id[1]; 4163 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4164 port_id.b.rsvd_1 = 0; 4165 4166 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4167 4168 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026, 4169 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n", 4170 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode); 4171 4172 /* res = 1 means ack at the end of thread 4173 * res = 0 means ack async/later. 4174 */ 4175 switch (iocb->u.isp24.status_subcode) { 4176 case ELS_PLOGI: 4177 4178 /* Mark all stale commands in qla_tgt_wq for deletion */ 4179 abort_cmds_for_s_id(vha, &port_id); 4180 4181 if (wwn) 4182 sess = qlt_find_sess_invalidate_other(tgt, wwn, 4183 port_id, loop_id); 4184 4185 if (!sess || IS_SW_RESV_ADDR(sess->s_id)) { 4186 res = 1; 4187 break; 4188 } 4189 4190 if (sess->plogi_ack_needed) { 4191 /* 4192 * Initiator sent another PLOGI before last PLOGI could 4193 * finish. Swap plogi iocbs and terminate old one 4194 * without acking, new one will get acked when session 4195 * deletion completes. 4196 */ 4197 ql_log(ql_log_warn, sess->vha, 0xf094, 4198 "sess %p received double plogi.\n", sess); 4199 4200 qlt_swap_imm_ntfy_iocb(iocb, &sess->tm_iocb); 4201 4202 qlt_send_term_imm_notif(vha, iocb, 1); 4203 4204 res = 0; 4205 break; 4206 } 4207 4208 res = 0; 4209 4210 /* 4211 * Save immediate Notif IOCB for Ack when sess is done 4212 * and being deleted. 4213 */ 4214 memcpy(&sess->tm_iocb, iocb, sizeof(sess->tm_iocb)); 4215 sess->plogi_ack_needed = 1; 4216 4217 /* 4218 * Under normal circumstances we want to release nport handle 4219 * during LOGO process to avoid nport handle leaks inside FW. 4220 * The exception is when LOGO is done while another PLOGI with 4221 * the same nport handle is waiting as might be the case here. 4222 * Note: there is always a possibily of a race where session 4223 * deletion has already started for other reasons (e.g. ACL 4224 * removal) and now PLOGI arrives: 4225 * 1. if PLOGI arrived in FW after nport handle has been freed, 4226 * FW must have assigned this PLOGI a new/same handle and we 4227 * can proceed ACK'ing it as usual when session deletion 4228 * completes. 4229 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4230 * bit reached it, the handle has now been released. We'll 4231 * get an error when we ACK this PLOGI. Nothing will be sent 4232 * back to initiator. Initiator should eventually retry 4233 * PLOGI and situation will correct itself. 4234 */ 4235 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4236 (sess->s_id.b24 == port_id.b24)); 4237 qlt_schedule_sess_for_deletion(sess, true); 4238 break; 4239 4240 case ELS_PRLI: 4241 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4242 4243 if (wwn) 4244 sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id, 4245 loop_id); 4246 4247 if (sess != NULL) { 4248 if (sess->deleted) { 4249 /* 4250 * Impatient initiator sent PRLI before last 4251 * PLOGI could finish. Will force him to re-try, 4252 * while last one finishes. 4253 */ 4254 ql_log(ql_log_warn, sess->vha, 0xf095, 4255 "sess %p PRLI received, before plogi ack.\n", 4256 sess); 4257 qlt_send_term_imm_notif(vha, iocb, 1); 4258 res = 0; 4259 break; 4260 } 4261 4262 /* 4263 * This shouldn't happen under normal circumstances, 4264 * since we have deleted the old session during PLOGI 4265 */ 4266 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4267 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4268 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4269 4270 sess->local = 0; 4271 sess->loop_id = loop_id; 4272 sess->s_id = port_id; 4273 4274 if (wd3_lo & BIT_7) 4275 sess->conf_compl_supported = 1; 4276 4277 } 4278 res = 1; /* send notify ack */ 4279 4280 /* Make session global (not used in fabric mode) */ 4281 if (ha->current_topology != ISP_CFG_F) { 4282 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4283 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4284 qla2xxx_wake_dpc(vha); 4285 } else { 4286 /* todo: else - create sess here. */ 4287 res = 1; /* send notify ack */ 4288 } 4289 4290 break; 4291 4292 case ELS_LOGO: 4293 case ELS_PRLO: 4294 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4295 break; 4296 case ELS_PDISC: 4297 case ELS_ADISC: 4298 { 4299 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4300 if (tgt->link_reinit_iocb_pending) { 4301 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4302 0, 0, 0, 0, 0, 0); 4303 tgt->link_reinit_iocb_pending = 0; 4304 } 4305 res = 1; /* send notify ack */ 4306 break; 4307 } 4308 4309 case ELS_FLOGI: /* should never happen */ 4310 default: 4311 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 4312 "qla_target(%d): Unsupported ELS command %x " 4313 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 4314 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4315 break; 4316 } 4317 4318 return res; 4319} 4320 4321static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset) 4322{ 4323 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL; 4324 size_t first_offset = 0, rem_offset = offset, tmp = 0; 4325 int i, sg_srr_cnt, bufflen = 0; 4326 4327 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023, 4328 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, " 4329 "cmd->sg_cnt: %u, direction: %d\n", 4330 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 4331 4332 /* 4333 * FIXME: Reject non zero SRR relative offset until we can test 4334 * this code properly. 4335 */ 4336 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset); 4337 return -1; 4338 4339 if (!cmd->sg || !cmd->sg_cnt) { 4340 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055, 4341 "Missing cmd->sg or zero cmd->sg_cnt in" 4342 " qla_tgt_set_data_offset\n"); 4343 return -EINVAL; 4344 } 4345 /* 4346 * Walk the current cmd->sg list until we locate the new sg_srr_start 4347 */ 4348 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) { 4349 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024, 4350 "sg[%d]: %p page: %p, length: %d, offset: %d\n", 4351 i, sg, sg_page(sg), sg->length, sg->offset); 4352 4353 if ((sg->length + tmp) > offset) { 4354 first_offset = rem_offset; 4355 sg_srr_start = sg; 4356 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025, 4357 "Found matching sg[%d], using %p as sg_srr_start, " 4358 "and using first_offset: %zu\n", i, sg, 4359 first_offset); 4360 break; 4361 } 4362 tmp += sg->length; 4363 rem_offset -= sg->length; 4364 } 4365 4366 if (!sg_srr_start) { 4367 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056, 4368 "Unable to locate sg_srr_start for offset: %u\n", offset); 4369 return -EINVAL; 4370 } 4371 sg_srr_cnt = (cmd->sg_cnt - i); 4372 4373 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL); 4374 if (!sg_srr) { 4375 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057, 4376 "Unable to allocate sgp\n"); 4377 return -ENOMEM; 4378 } 4379 sg_init_table(sg_srr, sg_srr_cnt); 4380 sgp = &sg_srr[0]; 4381 /* 4382 * Walk the remaining list for sg_srr_start, mapping to the newly 4383 * allocated sg_srr taking first_offset into account. 4384 */ 4385 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) { 4386 if (first_offset) { 4387 sg_set_page(sgp, sg_page(sg), 4388 (sg->length - first_offset), first_offset); 4389 first_offset = 0; 4390 } else { 4391 sg_set_page(sgp, sg_page(sg), sg->length, 0); 4392 } 4393 bufflen += sgp->length; 4394 4395 sgp = sg_next(sgp); 4396 if (!sgp) 4397 break; 4398 } 4399 4400 cmd->sg = sg_srr; 4401 cmd->sg_cnt = sg_srr_cnt; 4402 cmd->bufflen = bufflen; 4403 cmd->offset += offset; 4404 cmd->free_sg = 1; 4405 4406 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg); 4407 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n", 4408 cmd->sg_cnt); 4409 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n", 4410 cmd->bufflen); 4411 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n", 4412 cmd->offset); 4413 4414 if (cmd->sg_cnt < 0) 4415 BUG(); 4416 4417 if (cmd->bufflen < 0) 4418 BUG(); 4419 4420 return 0; 4421} 4422 4423static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd, 4424 uint32_t srr_rel_offs, int *xmit_type) 4425{ 4426 int res = 0, rel_offs; 4427 4428 rel_offs = srr_rel_offs - cmd->offset; 4429 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d", 4430 srr_rel_offs, rel_offs); 4431 4432 *xmit_type = QLA_TGT_XMIT_ALL; 4433 4434 if (rel_offs < 0) { 4435 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062, 4436 "qla_target(%d): SRR rel_offs (%d) < 0", 4437 cmd->vha->vp_idx, rel_offs); 4438 res = -1; 4439 } else if (rel_offs == cmd->bufflen) 4440 *xmit_type = QLA_TGT_XMIT_STATUS; 4441 else if (rel_offs > 0) 4442 res = qlt_set_data_offset(cmd, rel_offs); 4443 4444 return res; 4445} 4446 4447/* No locks, thread context */ 4448static void qlt_handle_srr(struct scsi_qla_host *vha, 4449 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm) 4450{ 4451 struct imm_ntfy_from_isp *ntfy = 4452 (struct imm_ntfy_from_isp *)&imm->imm_ntfy; 4453 struct qla_hw_data *ha = vha->hw; 4454 struct qla_tgt_cmd *cmd = sctio->cmd; 4455 struct se_cmd *se_cmd = &cmd->se_cmd; 4456 unsigned long flags; 4457 int xmit_type = 0, resp = 0; 4458 uint32_t offset; 4459 uint16_t srr_ui; 4460 4461 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs); 4462 srr_ui = ntfy->u.isp24.srr_ui; 4463 4464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n", 4465 cmd, srr_ui); 4466 4467 switch (srr_ui) { 4468 case SRR_IU_STATUS: 4469 spin_lock_irqsave(&ha->hardware_lock, flags); 4470 qlt_send_notify_ack(vha, ntfy, 4471 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 4472 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4473 xmit_type = QLA_TGT_XMIT_STATUS; 4474 resp = 1; 4475 break; 4476 case SRR_IU_DATA_IN: 4477 if (!cmd->sg || !cmd->sg_cnt) { 4478 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063, 4479 "Unable to process SRR_IU_DATA_IN due to" 4480 " missing cmd->sg, state: %d\n", cmd->state); 4481 dump_stack(); 4482 goto out_reject; 4483 } 4484 if (se_cmd->scsi_status != 0) { 4485 ql_dbg(ql_dbg_tgt, vha, 0xe02a, 4486 "Rejecting SRR_IU_DATA_IN with non GOOD " 4487 "scsi_status\n"); 4488 goto out_reject; 4489 } 4490 cmd->bufflen = se_cmd->data_length; 4491 4492 if (qlt_has_data(cmd)) { 4493 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) 4494 goto out_reject; 4495 spin_lock_irqsave(&ha->hardware_lock, flags); 4496 qlt_send_notify_ack(vha, ntfy, 4497 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 4498 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4499 resp = 1; 4500 } else { 4501 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064, 4502 "qla_target(%d): SRR for in data for cmd " 4503 "without them (tag %d, SCSI status %d), " 4504 "reject", vha->vp_idx, cmd->tag, 4505 cmd->se_cmd.scsi_status); 4506 goto out_reject; 4507 } 4508 break; 4509 case SRR_IU_DATA_OUT: 4510 if (!cmd->sg || !cmd->sg_cnt) { 4511 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065, 4512 "Unable to process SRR_IU_DATA_OUT due to" 4513 " missing cmd->sg\n"); 4514 dump_stack(); 4515 goto out_reject; 4516 } 4517 if (se_cmd->scsi_status != 0) { 4518 ql_dbg(ql_dbg_tgt, vha, 0xe02b, 4519 "Rejecting SRR_IU_DATA_OUT" 4520 " with non GOOD scsi_status\n"); 4521 goto out_reject; 4522 } 4523 cmd->bufflen = se_cmd->data_length; 4524 4525 if (qlt_has_data(cmd)) { 4526 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) 4527 goto out_reject; 4528 spin_lock_irqsave(&ha->hardware_lock, flags); 4529 qlt_send_notify_ack(vha, ntfy, 4530 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 4531 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4532 if (xmit_type & QLA_TGT_XMIT_DATA) { 4533 cmd->cmd_flags |= BIT_8; 4534 qlt_rdy_to_xfer(cmd); 4535 } 4536 } else { 4537 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066, 4538 "qla_target(%d): SRR for out data for cmd " 4539 "without them (tag %d, SCSI status %d), " 4540 "reject", vha->vp_idx, cmd->tag, 4541 cmd->se_cmd.scsi_status); 4542 goto out_reject; 4543 } 4544 break; 4545 default: 4546 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067, 4547 "qla_target(%d): Unknown srr_ui value %x", 4548 vha->vp_idx, srr_ui); 4549 goto out_reject; 4550 } 4551 4552 /* Transmit response in case of status and data-in cases */ 4553 if (resp) { 4554 cmd->cmd_flags |= BIT_7; 4555 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 4556 } 4557 4558 return; 4559 4560out_reject: 4561 spin_lock_irqsave(&ha->hardware_lock, flags); 4562 qlt_send_notify_ack(vha, ntfy, 0, 0, 0, 4563 NOTIFY_ACK_SRR_FLAGS_REJECT, 4564 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 4565 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 4566 if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4567 cmd->state = QLA_TGT_STATE_DATA_IN; 4568 dump_stack(); 4569 } else { 4570 cmd->cmd_flags |= BIT_9; 4571 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); 4572 } 4573 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4574} 4575 4576static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha, 4577 struct qla_tgt_srr_imm *imm, int ha_locked) 4578{ 4579 struct qla_hw_data *ha = vha->hw; 4580 unsigned long flags = 0; 4581 4582 if (!ha_locked) 4583 spin_lock_irqsave(&ha->hardware_lock, flags); 4584 4585 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0, 4586 NOTIFY_ACK_SRR_FLAGS_REJECT, 4587 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 4588 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 4589 4590 if (!ha_locked) 4591 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4592 4593 kfree(imm); 4594} 4595 4596static void qlt_handle_srr_work(struct work_struct *work) 4597{ 4598 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work); 4599 struct scsi_qla_host *vha = tgt->vha; 4600 struct qla_tgt_srr_ctio *sctio; 4601 unsigned long flags; 4602 4603 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n", 4604 tgt); 4605 4606restart: 4607 spin_lock_irqsave(&tgt->srr_lock, flags); 4608 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) { 4609 struct qla_tgt_srr_imm *imm, *i, *ti; 4610 struct qla_tgt_cmd *cmd; 4611 struct se_cmd *se_cmd; 4612 4613 imm = NULL; 4614 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list, 4615 srr_list_entry) { 4616 if (i->srr_id == sctio->srr_id) { 4617 list_del(&i->srr_list_entry); 4618 if (imm) { 4619 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068, 4620 "qla_target(%d): There must be " 4621 "only one IMM SRR per CTIO SRR " 4622 "(IMM SRR %p, id %d, CTIO %p\n", 4623 vha->vp_idx, i, i->srr_id, sctio); 4624 qlt_reject_free_srr_imm(tgt->vha, i, 0); 4625 } else 4626 imm = i; 4627 } 4628 } 4629 4630 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a, 4631 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio, 4632 sctio->srr_id); 4633 4634 if (imm == NULL) { 4635 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b, 4636 "Not found matching IMM for SRR CTIO (id %d)\n", 4637 sctio->srr_id); 4638 continue; 4639 } else 4640 list_del(&sctio->srr_list_entry); 4641 4642 spin_unlock_irqrestore(&tgt->srr_lock, flags); 4643 4644 cmd = sctio->cmd; 4645 /* 4646 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow 4647 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in() 4648 * logic.. 4649 */ 4650 cmd->offset = 0; 4651 if (cmd->free_sg) { 4652 kfree(cmd->sg); 4653 cmd->sg = NULL; 4654 cmd->free_sg = 0; 4655 } 4656 se_cmd = &cmd->se_cmd; 4657 4658 cmd->sg_cnt = se_cmd->t_data_nents; 4659 cmd->sg = se_cmd->t_data_sg; 4660 4661 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c, 4662 "SRR cmd %p (se_cmd %p, tag %d, op %x), " 4663 "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag, 4664 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 4665 cmd->sg_cnt, cmd->offset); 4666 4667 qlt_handle_srr(vha, sctio, imm); 4668 4669 kfree(imm); 4670 kfree(sctio); 4671 goto restart; 4672 } 4673 spin_unlock_irqrestore(&tgt->srr_lock, flags); 4674} 4675 4676/* ha->hardware_lock supposed to be held on entry */ 4677static void qlt_prepare_srr_imm(struct scsi_qla_host *vha, 4678 struct imm_ntfy_from_isp *iocb) 4679{ 4680 struct qla_tgt_srr_imm *imm; 4681 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4682 struct qla_tgt_srr_ctio *sctio; 4683 4684 tgt->imm_srr_id++; 4685 4686 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n", 4687 vha->vp_idx); 4688 4689 imm = kzalloc(sizeof(*imm), GFP_ATOMIC); 4690 if (imm != NULL) { 4691 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy)); 4692 4693 /* IRQ is already OFF */ 4694 spin_lock(&tgt->srr_lock); 4695 imm->srr_id = tgt->imm_srr_id; 4696 list_add_tail(&imm->srr_list_entry, 4697 &tgt->srr_imm_list); 4698 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e, 4699 "IMM NTFY SRR %p added (id %d, ui %x)\n", 4700 imm, imm->srr_id, iocb->u.isp24.srr_ui); 4701 if (tgt->imm_srr_id == tgt->ctio_srr_id) { 4702 int found = 0; 4703 list_for_each_entry(sctio, &tgt->srr_ctio_list, 4704 srr_list_entry) { 4705 if (sctio->srr_id == imm->srr_id) { 4706 found = 1; 4707 break; 4708 } 4709 } 4710 if (found) { 4711 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s", 4712 "Scheduling srr work\n"); 4713 schedule_work(&tgt->srr_work); 4714 } else { 4715 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030, 4716 "qla_target(%d): imm_srr_id " 4717 "== ctio_srr_id (%d), but there is no " 4718 "corresponding SRR CTIO, deleting IMM " 4719 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id, 4720 imm); 4721 list_del(&imm->srr_list_entry); 4722 4723 kfree(imm); 4724 4725 spin_unlock(&tgt->srr_lock); 4726 goto out_reject; 4727 } 4728 } 4729 spin_unlock(&tgt->srr_lock); 4730 } else { 4731 struct qla_tgt_srr_ctio *ts; 4732 4733 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069, 4734 "qla_target(%d): Unable to allocate SRR IMM " 4735 "entry, SRR request will be rejected\n", vha->vp_idx); 4736 4737 /* IRQ is already OFF */ 4738 spin_lock(&tgt->srr_lock); 4739 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list, 4740 srr_list_entry) { 4741 if (sctio->srr_id == tgt->imm_srr_id) { 4742 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031, 4743 "CTIO SRR %p deleted (id %d)\n", 4744 sctio, sctio->srr_id); 4745 list_del(&sctio->srr_list_entry); 4746 qlt_send_term_exchange(vha, sctio->cmd, 4747 &sctio->cmd->atio, 1); 4748 kfree(sctio); 4749 } 4750 } 4751 spin_unlock(&tgt->srr_lock); 4752 goto out_reject; 4753 } 4754 4755 return; 4756 4757out_reject: 4758 qlt_send_notify_ack(vha, iocb, 0, 0, 0, 4759 NOTIFY_ACK_SRR_FLAGS_REJECT, 4760 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 4761 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 4762} 4763 4764/* 4765 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4766 */ 4767static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 4768 struct imm_ntfy_from_isp *iocb) 4769{ 4770 struct qla_hw_data *ha = vha->hw; 4771 uint32_t add_flags = 0; 4772 int send_notify_ack = 1; 4773 uint16_t status; 4774 4775 status = le16_to_cpu(iocb->u.isp2x.status); 4776 switch (status) { 4777 case IMM_NTFY_LIP_RESET: 4778 { 4779 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 4780 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 4781 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 4782 iocb->u.isp24.status_subcode); 4783 4784 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4785 send_notify_ack = 0; 4786 break; 4787 } 4788 4789 case IMM_NTFY_LIP_LINK_REINIT: 4790 { 4791 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4792 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 4793 "qla_target(%d): LINK REINIT (loop %#x, " 4794 "subcode %x)\n", vha->vp_idx, 4795 le16_to_cpu(iocb->u.isp24.nport_handle), 4796 iocb->u.isp24.status_subcode); 4797 if (tgt->link_reinit_iocb_pending) { 4798 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4799 0, 0, 0, 0, 0, 0); 4800 } 4801 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 4802 tgt->link_reinit_iocb_pending = 1; 4803 /* 4804 * QLogic requires to wait after LINK REINIT for possible 4805 * PDISC or ADISC ELS commands 4806 */ 4807 send_notify_ack = 0; 4808 break; 4809 } 4810 4811 case IMM_NTFY_PORT_LOGOUT: 4812 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 4813 "qla_target(%d): Port logout (loop " 4814 "%#x, subcode %x)\n", vha->vp_idx, 4815 le16_to_cpu(iocb->u.isp24.nport_handle), 4816 iocb->u.isp24.status_subcode); 4817 4818 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 4819 send_notify_ack = 0; 4820 /* The sessions will be cleared in the callback, if needed */ 4821 break; 4822 4823 case IMM_NTFY_GLBL_TPRLO: 4824 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 4825 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 4826 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4827 send_notify_ack = 0; 4828 /* The sessions will be cleared in the callback, if needed */ 4829 break; 4830 4831 case IMM_NTFY_PORT_CONFIG: 4832 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 4833 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 4834 status); 4835 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 4836 send_notify_ack = 0; 4837 /* The sessions will be cleared in the callback, if needed */ 4838 break; 4839 4840 case IMM_NTFY_GLBL_LOGO: 4841 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 4842 "qla_target(%d): Link failure detected\n", 4843 vha->vp_idx); 4844 /* I_T nexus loss */ 4845 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 4846 send_notify_ack = 0; 4847 break; 4848 4849 case IMM_NTFY_IOCB_OVERFLOW: 4850 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 4851 "qla_target(%d): Cannot provide requested " 4852 "capability (IOCB overflowed the immediate notify " 4853 "resource count)\n", vha->vp_idx); 4854 break; 4855 4856 case IMM_NTFY_ABORT_TASK: 4857 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 4858 "qla_target(%d): Abort Task (S %08x I %#x -> " 4859 "L %#x)\n", vha->vp_idx, 4860 le16_to_cpu(iocb->u.isp2x.seq_id), 4861 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 4862 le16_to_cpu(iocb->u.isp2x.lun)); 4863 if (qlt_abort_task(vha, iocb) == 0) 4864 send_notify_ack = 0; 4865 break; 4866 4867 case IMM_NTFY_RESOURCE: 4868 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 4869 "qla_target(%d): Out of resources, host %ld\n", 4870 vha->vp_idx, vha->host_no); 4871 break; 4872 4873 case IMM_NTFY_MSG_RX: 4874 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 4875 "qla_target(%d): Immediate notify task %x\n", 4876 vha->vp_idx, iocb->u.isp2x.task_flags); 4877 if (qlt_handle_task_mgmt(vha, iocb) == 0) 4878 send_notify_ack = 0; 4879 break; 4880 4881 case IMM_NTFY_ELS: 4882 if (qlt_24xx_handle_els(vha, iocb) == 0) 4883 send_notify_ack = 0; 4884 break; 4885 4886 case IMM_NTFY_SRR: 4887 qlt_prepare_srr_imm(vha, iocb); 4888 send_notify_ack = 0; 4889 break; 4890 4891 default: 4892 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 4893 "qla_target(%d): Received unknown immediate " 4894 "notify status %x\n", vha->vp_idx, status); 4895 break; 4896 } 4897 4898 if (send_notify_ack) 4899 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0); 4900} 4901 4902/* 4903 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4904 * This function sends busy to ISP 2xxx or 24xx. 4905 */ 4906static int __qlt_send_busy(struct scsi_qla_host *vha, 4907 struct atio_from_isp *atio, uint16_t status) 4908{ 4909 struct ctio7_to_24xx *ctio24; 4910 struct qla_hw_data *ha = vha->hw; 4911 request_t *pkt; 4912 struct qla_tgt_sess *sess = NULL; 4913 4914 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4915 atio->u.isp24.fcp_hdr.s_id); 4916 if (!sess) { 4917 qlt_send_term_exchange(vha, NULL, atio, 1); 4918 return 0; 4919 } 4920 /* Sending marker isn't necessary, since we called from ISR */ 4921 4922 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 4923 if (!pkt) { 4924 ql_dbg(ql_dbg_io, vha, 0x3063, 4925 "qla_target(%d): %s failed: unable to allocate " 4926 "request packet", vha->vp_idx, __func__); 4927 return -ENOMEM; 4928 } 4929 4930 pkt->entry_count = 1; 4931 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 4932 4933 ctio24 = (struct ctio7_to_24xx *)pkt; 4934 ctio24->entry_type = CTIO_TYPE7; 4935 ctio24->nport_handle = sess->loop_id; 4936 ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); 4937 ctio24->vp_index = vha->vp_idx; 4938 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 4939 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 4940 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 4941 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 4942 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 4943 __constant_cpu_to_le16( 4944 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 4945 CTIO7_FLAGS_DONT_RET_CTIO); 4946 /* 4947 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 4948 * if the explicit conformation is used. 4949 */ 4950 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 4951 ctio24->u.status1.scsi_status = cpu_to_le16(status); 4952 /* Memory Barrier */ 4953 wmb(); 4954 qla2x00_start_iocbs(vha, vha->req); 4955 return 0; 4956} 4957 4958/* 4959 * This routine is used to allocate a command for either a QFull condition 4960 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 4961 * out previously. 4962 */ 4963static void 4964qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 4965 struct atio_from_isp *atio, uint16_t status, int qfull) 4966{ 4967 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4968 struct qla_hw_data *ha = vha->hw; 4969 struct qla_tgt_sess *sess; 4970 struct se_session *se_sess; 4971 struct qla_tgt_cmd *cmd; 4972 int tag; 4973 4974 if (unlikely(tgt->tgt_stop)) { 4975 ql_dbg(ql_dbg_io, vha, 0x300a, 4976 "New command while device %p is shutting down\n", tgt); 4977 return; 4978 } 4979 4980 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 4981 vha->hw->tgt.num_qfull_cmds_dropped++; 4982 if (vha->hw->tgt.num_qfull_cmds_dropped > 4983 vha->hw->qla_stats.stat_max_qfull_cmds_dropped) 4984 vha->hw->qla_stats.stat_max_qfull_cmds_dropped = 4985 vha->hw->tgt.num_qfull_cmds_dropped; 4986 4987 ql_dbg(ql_dbg_io, vha, 0x3068, 4988 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 4989 vha->vp_idx, __func__, 4990 vha->hw->tgt.num_qfull_cmds_dropped); 4991 4992 qlt_chk_exch_leak_thresh_hold(vha); 4993 return; 4994 } 4995 4996 sess = ha->tgt.tgt_ops->find_sess_by_s_id 4997 (vha, atio->u.isp24.fcp_hdr.s_id); 4998 if (!sess) 4999 return; 5000 5001 se_sess = sess->se_sess; 5002 5003 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 5004 if (tag < 0) 5005 return; 5006 5007 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5008 if (!cmd) { 5009 ql_dbg(ql_dbg_io, vha, 0x3009, 5010 "qla_target(%d): %s: Allocation of cmd failed\n", 5011 vha->vp_idx, __func__); 5012 5013 vha->hw->tgt.num_qfull_cmds_dropped++; 5014 if (vha->hw->tgt.num_qfull_cmds_dropped > 5015 vha->hw->qla_stats.stat_max_qfull_cmds_dropped) 5016 vha->hw->qla_stats.stat_max_qfull_cmds_dropped = 5017 vha->hw->tgt.num_qfull_cmds_dropped; 5018 5019 qlt_chk_exch_leak_thresh_hold(vha); 5020 return; 5021 } 5022 5023 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5024 5025 qlt_incr_num_pend_cmds(vha); 5026 INIT_LIST_HEAD(&cmd->cmd_list); 5027 memcpy(&cmd->atio, atio, sizeof(*atio)); 5028 5029 cmd->tgt = vha->vha_tgt.qla_tgt; 5030 cmd->vha = vha; 5031 cmd->reset_count = vha->hw->chip_reset; 5032 cmd->q_full = 1; 5033 5034 if (qfull) { 5035 cmd->q_full = 1; 5036 /* NOTE: borrowing the state field to carry the status */ 5037 cmd->state = status; 5038 } else 5039 cmd->term_exchg = 1; 5040 5041 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5042 5043 vha->hw->tgt.num_qfull_cmds_alloc++; 5044 if (vha->hw->tgt.num_qfull_cmds_alloc > 5045 vha->hw->qla_stats.stat_max_qfull_cmds_alloc) 5046 vha->hw->qla_stats.stat_max_qfull_cmds_alloc = 5047 vha->hw->tgt.num_qfull_cmds_alloc; 5048} 5049 5050int 5051qlt_free_qfull_cmds(struct scsi_qla_host *vha) 5052{ 5053 struct qla_hw_data *ha = vha->hw; 5054 unsigned long flags; 5055 struct qla_tgt_cmd *cmd, *tcmd; 5056 struct list_head free_list; 5057 int rc = 0; 5058 5059 if (list_empty(&ha->tgt.q_full_list)) 5060 return 0; 5061 5062 INIT_LIST_HEAD(&free_list); 5063 5064 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 5065 5066 if (list_empty(&ha->tgt.q_full_list)) { 5067 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5068 return 0; 5069 } 5070 5071 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) { 5072 if (cmd->q_full) 5073 /* cmd->state is a borrowed field to hold status */ 5074 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state); 5075 else if (cmd->term_exchg) 5076 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio); 5077 5078 if (rc == -ENOMEM) 5079 break; 5080 5081 if (cmd->q_full) 5082 ql_dbg(ql_dbg_io, vha, 0x3006, 5083 "%s: busy sent for ox_id[%04x]\n", __func__, 5084 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5085 else if (cmd->term_exchg) 5086 ql_dbg(ql_dbg_io, vha, 0x3007, 5087 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5088 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5089 else 5090 ql_dbg(ql_dbg_io, vha, 0x3008, 5091 "%s: Unexpected cmd in QFull list %p\n", __func__, 5092 cmd); 5093 5094 list_del(&cmd->cmd_list); 5095 list_add_tail(&cmd->cmd_list, &free_list); 5096 5097 /* piggy back on hardware_lock for protection */ 5098 vha->hw->tgt.num_qfull_cmds_alloc--; 5099 } 5100 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5101 5102 cmd = NULL; 5103 5104 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5105 list_del(&cmd->cmd_list); 5106 /* This cmd was never sent to TCM. There is no need 5107 * to schedule free or call free_cmd 5108 */ 5109 qlt_free_cmd(cmd); 5110 } 5111 return rc; 5112} 5113 5114static void 5115qlt_send_busy(struct scsi_qla_host *vha, 5116 struct atio_from_isp *atio, uint16_t status) 5117{ 5118 int rc = 0; 5119 5120 rc = __qlt_send_busy(vha, atio, status); 5121 if (rc == -ENOMEM) 5122 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5123} 5124 5125static int 5126qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, 5127 struct atio_from_isp *atio) 5128{ 5129 struct qla_hw_data *ha = vha->hw; 5130 uint16_t status; 5131 5132 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5133 return 0; 5134 5135 status = temp_sam_status; 5136 qlt_send_busy(vha, atio, status); 5137 return 1; 5138} 5139 5140/* ha->hardware_lock supposed to be held on entry */ 5141/* called via callback from qla2xxx */ 5142static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5143 struct atio_from_isp *atio) 5144{ 5145 struct qla_hw_data *ha = vha->hw; 5146 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5147 int rc; 5148 5149 if (unlikely(tgt == NULL)) { 5150 ql_dbg(ql_dbg_io, vha, 0x3064, 5151 "ATIO pkt, but no tgt (ha %p)", ha); 5152 return; 5153 } 5154 /* 5155 * In tgt_stop mode we also should allow all requests to pass. 5156 * Otherwise, some commands can stuck. 5157 */ 5158 5159 tgt->irq_cmd_count++; 5160 5161 switch (atio->u.raw.entry_type) { 5162 case ATIO_TYPE7: 5163 if (unlikely(atio->u.isp24.exchange_addr == 5164 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5165 ql_dbg(ql_dbg_io, vha, 0x3065, 5166 "qla_target(%d): ATIO_TYPE7 " 5167 "received with UNKNOWN exchange address, " 5168 "sending QUEUE_FULL\n", vha->vp_idx); 5169 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL); 5170 break; 5171 } 5172 5173 5174 5175 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5176 rc = qlt_chk_qfull_thresh_hold(vha, atio); 5177 if (rc != 0) { 5178 tgt->irq_cmd_count--; 5179 return; 5180 } 5181 rc = qlt_handle_cmd_for_atio(vha, atio); 5182 } else { 5183 rc = qlt_handle_task_mgmt(vha, atio); 5184 } 5185 if (unlikely(rc != 0)) { 5186 if (rc == -ESRCH) { 5187#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5188 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5189#else 5190 qlt_send_term_exchange(vha, NULL, atio, 1); 5191#endif 5192 } else { 5193 if (tgt->tgt_stop) { 5194 ql_dbg(ql_dbg_tgt, vha, 0xe059, 5195 "qla_target: Unable to send " 5196 "command to target for req, " 5197 "ignoring.\n"); 5198 } else { 5199 ql_dbg(ql_dbg_tgt, vha, 0xe05a, 5200 "qla_target(%d): Unable to send " 5201 "command to target, sending BUSY " 5202 "status.\n", vha->vp_idx); 5203 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5204 } 5205 } 5206 } 5207 break; 5208 5209 case IMMED_NOTIFY_TYPE: 5210 { 5211 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5212 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5213 "qla_target(%d): Received ATIO packet %x " 5214 "with error status %x\n", vha->vp_idx, 5215 atio->u.raw.entry_type, 5216 atio->u.isp2x.entry_status); 5217 break; 5218 } 5219 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5220 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5221 break; 5222 } 5223 5224 default: 5225 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5226 "qla_target(%d): Received unknown ATIO atio " 5227 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5228 break; 5229 } 5230 5231 tgt->irq_cmd_count--; 5232} 5233 5234/* ha->hardware_lock supposed to be held on entry */ 5235/* called via callback from qla2xxx */ 5236static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) 5237{ 5238 struct qla_hw_data *ha = vha->hw; 5239 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5240 5241 if (unlikely(tgt == NULL)) { 5242 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5243 "qla_target(%d): Response pkt %x received, but no " 5244 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha); 5245 return; 5246 } 5247 5248 /* 5249 * In tgt_stop mode we also should allow all requests to pass. 5250 * Otherwise, some commands can stuck. 5251 */ 5252 5253 tgt->irq_cmd_count++; 5254 5255 switch (pkt->entry_type) { 5256 case CTIO_CRC2: 5257 case CTIO_TYPE7: 5258 { 5259 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5260 qlt_do_ctio_completion(vha, entry->handle, 5261 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5262 entry); 5263 break; 5264 } 5265 5266 case ACCEPT_TGT_IO_TYPE: 5267 { 5268 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5269 int rc; 5270 if (atio->u.isp2x.status != 5271 __constant_cpu_to_le16(ATIO_CDB_VALID)) { 5272 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5273 "qla_target(%d): ATIO with error " 5274 "status %x received\n", vha->vp_idx, 5275 le16_to_cpu(atio->u.isp2x.status)); 5276 break; 5277 } 5278 5279 rc = qlt_chk_qfull_thresh_hold(vha, atio); 5280 if (rc != 0) { 5281 tgt->irq_cmd_count--; 5282 return; 5283 } 5284 5285 rc = qlt_handle_cmd_for_atio(vha, atio); 5286 if (unlikely(rc != 0)) { 5287 if (rc == -ESRCH) { 5288#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5289 qlt_send_busy(vha, atio, 0); 5290#else 5291 qlt_send_term_exchange(vha, NULL, atio, 1); 5292#endif 5293 } else { 5294 if (tgt->tgt_stop) { 5295 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5296 "qla_target: Unable to send " 5297 "command to target, sending TERM " 5298 "EXCHANGE for rsp\n"); 5299 qlt_send_term_exchange(vha, NULL, 5300 atio, 1); 5301 } else { 5302 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5303 "qla_target(%d): Unable to send " 5304 "command to target, sending BUSY " 5305 "status\n", vha->vp_idx); 5306 qlt_send_busy(vha, atio, 0); 5307 } 5308 } 5309 } 5310 } 5311 break; 5312 5313 case CONTINUE_TGT_IO_TYPE: 5314 { 5315 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5316 qlt_do_ctio_completion(vha, entry->handle, 5317 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5318 entry); 5319 break; 5320 } 5321 5322 case CTIO_A64_TYPE: 5323 { 5324 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5325 qlt_do_ctio_completion(vha, entry->handle, 5326 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5327 entry); 5328 break; 5329 } 5330 5331 case IMMED_NOTIFY_TYPE: 5332 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5333 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5334 break; 5335 5336 case NOTIFY_ACK_TYPE: 5337 if (tgt->notify_ack_expected > 0) { 5338 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5339 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5340 "NOTIFY_ACK seq %08x status %x\n", 5341 le16_to_cpu(entry->u.isp2x.seq_id), 5342 le16_to_cpu(entry->u.isp2x.status)); 5343 tgt->notify_ack_expected--; 5344 if (entry->u.isp2x.status != 5345 __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5346 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5347 "qla_target(%d): NOTIFY_ACK " 5348 "failed %x\n", vha->vp_idx, 5349 le16_to_cpu(entry->u.isp2x.status)); 5350 } 5351 } else { 5352 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5353 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5354 vha->vp_idx); 5355 } 5356 break; 5357 5358 case ABTS_RECV_24XX: 5359 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5360 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5361 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5362 break; 5363 5364 case ABTS_RESP_24XX: 5365 if (tgt->abts_resp_expected > 0) { 5366 struct abts_resp_from_24xx_fw *entry = 5367 (struct abts_resp_from_24xx_fw *)pkt; 5368 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5369 "ABTS_RESP_24XX: compl_status %x\n", 5370 entry->compl_status); 5371 tgt->abts_resp_expected--; 5372 if (le16_to_cpu(entry->compl_status) != 5373 ABTS_RESP_COMPL_SUCCESS) { 5374 if ((entry->error_subcode1 == 0x1E) && 5375 (entry->error_subcode2 == 0)) { 5376 /* 5377 * We've got a race here: aborted 5378 * exchange not terminated, i.e. 5379 * response for the aborted command was 5380 * sent between the abort request was 5381 * received and processed. 5382 * Unfortunately, the firmware has a 5383 * silly requirement that all aborted 5384 * exchanges must be explicitely 5385 * terminated, otherwise it refuses to 5386 * send responses for the abort 5387 * requests. So, we have to 5388 * (re)terminate the exchange and retry 5389 * the abort response. 5390 */ 5391 qlt_24xx_retry_term_exchange(vha, 5392 entry); 5393 } else 5394 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5395 "qla_target(%d): ABTS_RESP_24XX " 5396 "failed %x (subcode %x:%x)", 5397 vha->vp_idx, entry->compl_status, 5398 entry->error_subcode1, 5399 entry->error_subcode2); 5400 } 5401 } else { 5402 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5403 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5404 "received\n", vha->vp_idx); 5405 } 5406 break; 5407 5408 default: 5409 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5410 "qla_target(%d): Received unknown response pkt " 5411 "type %x\n", vha->vp_idx, pkt->entry_type); 5412 break; 5413 } 5414 5415 tgt->irq_cmd_count--; 5416} 5417 5418/* 5419 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5420 */ 5421void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5422 uint16_t *mailbox) 5423{ 5424 struct qla_hw_data *ha = vha->hw; 5425 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5426 int login_code; 5427 5428 if (!ha->tgt.tgt_ops) 5429 return; 5430 5431 if (unlikely(tgt == NULL)) { 5432 ql_dbg(ql_dbg_tgt, vha, 0xe03a, 5433 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha); 5434 return; 5435 } 5436 5437 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5438 IS_QLA2100(ha)) 5439 return; 5440 /* 5441 * In tgt_stop mode we also should allow all requests to pass. 5442 * Otherwise, some commands can stuck. 5443 */ 5444 5445 tgt->irq_cmd_count++; 5446 5447 switch (code) { 5448 case MBA_RESET: /* Reset */ 5449 case MBA_SYSTEM_ERR: /* System Error */ 5450 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5451 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5452 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5453 "qla_target(%d): System error async event %#x " 5454 "occurred", vha->vp_idx, code); 5455 break; 5456 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5457 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5458 break; 5459 5460 case MBA_LOOP_UP: 5461 { 5462 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5463 "qla_target(%d): Async LOOP_UP occurred " 5464 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5465 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5466 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5467 if (tgt->link_reinit_iocb_pending) { 5468 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb, 5469 0, 0, 0, 0, 0, 0); 5470 tgt->link_reinit_iocb_pending = 0; 5471 } 5472 break; 5473 } 5474 5475 case MBA_LIP_OCCURRED: 5476 case MBA_LOOP_DOWN: 5477 case MBA_LIP_RESET: 5478 case MBA_RSCN_UPDATE: 5479 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5480 "qla_target(%d): Async event %#x occurred " 5481 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5482 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5483 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5484 break; 5485 5486 case MBA_PORT_UPDATE: 5487 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5488 "qla_target(%d): Port update async event %#x " 5489 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5490 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5491 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5492 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5493 5494 login_code = le16_to_cpu(mailbox[2]); 5495 if (login_code == 0x4) 5496 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5497 "Async MB 2: Got PLOGI Complete\n"); 5498 else if (login_code == 0x7) 5499 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5500 "Async MB 2: Port Logged Out\n"); 5501 break; 5502 5503 default: 5504 break; 5505 } 5506 5507 tgt->irq_cmd_count--; 5508} 5509 5510static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5511 uint16_t loop_id) 5512{ 5513 fc_port_t *fcport; 5514 int rc; 5515 5516 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); 5517 if (!fcport) { 5518 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5519 "qla_target(%d): Allocation of tmp FC port failed", 5520 vha->vp_idx); 5521 return NULL; 5522 } 5523 5524 fcport->loop_id = loop_id; 5525 5526 rc = qla2x00_get_port_database(vha, fcport, 0); 5527 if (rc != QLA_SUCCESS) { 5528 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5529 "qla_target(%d): Failed to retrieve fcport " 5530 "information -- get_port_database() returned %x " 5531 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5532 kfree(fcport); 5533 return NULL; 5534 } 5535 5536 return fcport; 5537} 5538 5539/* Must be called under tgt_mutex */ 5540static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha, 5541 uint8_t *s_id) 5542{ 5543 struct qla_tgt_sess *sess = NULL; 5544 fc_port_t *fcport = NULL; 5545 int rc, global_resets; 5546 uint16_t loop_id = 0; 5547 5548retry: 5549 global_resets = 5550 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 5551 5552 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 5553 if (rc != 0) { 5554 if ((s_id[0] == 0xFF) && 5555 (s_id[1] == 0xFC)) { 5556 /* 5557 * This is Domain Controller, so it should be 5558 * OK to drop SCSI commands from it. 5559 */ 5560 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5561 "Unable to find initiator with S_ID %x:%x:%x", 5562 s_id[0], s_id[1], s_id[2]); 5563 } else 5564 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071, 5565 "qla_target(%d): Unable to find " 5566 "initiator with S_ID %x:%x:%x", 5567 vha->vp_idx, s_id[0], s_id[1], 5568 s_id[2]); 5569 return NULL; 5570 } 5571 5572 fcport = qlt_get_port_database(vha, loop_id); 5573 if (!fcport) 5574 return NULL; 5575 5576 if (global_resets != 5577 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 5578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 5579 "qla_target(%d): global reset during session discovery " 5580 "(counter was %d, new %d), retrying", vha->vp_idx, 5581 global_resets, 5582 atomic_read(&vha->vha_tgt. 5583 qla_tgt->tgt_global_resets_count)); 5584 goto retry; 5585 } 5586 5587 sess = qlt_create_sess(vha, fcport, true); 5588 5589 kfree(fcport); 5590 return sess; 5591} 5592 5593static void qlt_abort_work(struct qla_tgt *tgt, 5594 struct qla_tgt_sess_work_param *prm) 5595{ 5596 struct scsi_qla_host *vha = tgt->vha; 5597 struct qla_hw_data *ha = vha->hw; 5598 struct qla_tgt_sess *sess = NULL; 5599 unsigned long flags; 5600 uint32_t be_s_id; 5601 uint8_t s_id[3]; 5602 int rc; 5603 5604 spin_lock_irqsave(&ha->hardware_lock, flags); 5605 5606 if (tgt->tgt_stop) 5607 goto out_term; 5608 5609 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 5610 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 5611 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 5612 5613 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5614 (unsigned char *)&be_s_id); 5615 if (!sess) { 5616 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5617 5618 mutex_lock(&vha->vha_tgt.tgt_mutex); 5619 sess = qlt_make_local_sess(vha, s_id); 5620 /* sess has got an extra creation ref */ 5621 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5622 5623 spin_lock_irqsave(&ha->hardware_lock, flags); 5624 if (!sess) 5625 goto out_term; 5626 } else { 5627 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 5628 sess = NULL; 5629 goto out_term; 5630 } 5631 5632 kref_get(&sess->se_sess->sess_kref); 5633 } 5634 5635 if (tgt->tgt_stop) 5636 goto out_term; 5637 5638 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 5639 if (rc != 0) 5640 goto out_term; 5641 5642 ha->tgt.tgt_ops->put_sess(sess); 5643 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5644 return; 5645 5646out_term: 5647 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); 5648 if (sess) 5649 ha->tgt.tgt_ops->put_sess(sess); 5650 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5651} 5652 5653static void qlt_tmr_work(struct qla_tgt *tgt, 5654 struct qla_tgt_sess_work_param *prm) 5655{ 5656 struct atio_from_isp *a = &prm->tm_iocb2; 5657 struct scsi_qla_host *vha = tgt->vha; 5658 struct qla_hw_data *ha = vha->hw; 5659 struct qla_tgt_sess *sess = NULL; 5660 unsigned long flags; 5661 uint8_t *s_id = NULL; /* to hide compiler warnings */ 5662 int rc; 5663 uint32_t lun, unpacked_lun; 5664 int lun_size, fn; 5665 void *iocb; 5666 5667 spin_lock_irqsave(&ha->hardware_lock, flags); 5668 5669 if (tgt->tgt_stop) 5670 goto out_term; 5671 5672 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 5673 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 5674 if (!sess) { 5675 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5676 5677 mutex_lock(&vha->vha_tgt.tgt_mutex); 5678 sess = qlt_make_local_sess(vha, s_id); 5679 /* sess has got an extra creation ref */ 5680 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5681 5682 spin_lock_irqsave(&ha->hardware_lock, flags); 5683 if (!sess) 5684 goto out_term; 5685 } else { 5686 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 5687 sess = NULL; 5688 goto out_term; 5689 } 5690 5691 kref_get(&sess->se_sess->sess_kref); 5692 } 5693 5694 iocb = a; 5695 lun = a->u.isp24.fcp_cmnd.lun; 5696 lun_size = sizeof(lun); 5697 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 5698 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 5699 5700 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 5701 if (rc != 0) 5702 goto out_term; 5703 5704 ha->tgt.tgt_ops->put_sess(sess); 5705 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5706 return; 5707 5708out_term: 5709 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1); 5710 if (sess) 5711 ha->tgt.tgt_ops->put_sess(sess); 5712 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5713} 5714 5715static void qlt_sess_work_fn(struct work_struct *work) 5716{ 5717 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 5718 struct scsi_qla_host *vha = tgt->vha; 5719 unsigned long flags; 5720 5721 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 5722 5723 spin_lock_irqsave(&tgt->sess_work_lock, flags); 5724 while (!list_empty(&tgt->sess_works_list)) { 5725 struct qla_tgt_sess_work_param *prm = list_entry( 5726 tgt->sess_works_list.next, typeof(*prm), 5727 sess_works_list_entry); 5728 5729 /* 5730 * This work can be scheduled on several CPUs at time, so we 5731 * must delete the entry to eliminate double processing 5732 */ 5733 list_del(&prm->sess_works_list_entry); 5734 5735 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 5736 5737 switch (prm->type) { 5738 case QLA_TGT_SESS_WORK_ABORT: 5739 qlt_abort_work(tgt, prm); 5740 break; 5741 case QLA_TGT_SESS_WORK_TM: 5742 qlt_tmr_work(tgt, prm); 5743 break; 5744 default: 5745 BUG_ON(1); 5746 break; 5747 } 5748 5749 spin_lock_irqsave(&tgt->sess_work_lock, flags); 5750 5751 kfree(prm); 5752 } 5753 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 5754} 5755 5756/* Must be called under tgt_host_action_mutex */ 5757int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 5758{ 5759 struct qla_tgt *tgt; 5760 5761 if (!QLA_TGT_MODE_ENABLED()) 5762 return 0; 5763 5764 if (!IS_TGT_MODE_CAPABLE(ha)) { 5765 ql_log(ql_log_warn, base_vha, 0xe070, 5766 "This adapter does not support target mode.\n"); 5767 return 0; 5768 } 5769 5770 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 5771 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 5772 5773 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 5774 5775 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 5776 if (!tgt) { 5777 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 5778 "Unable to allocate struct qla_tgt\n"); 5779 return -ENOMEM; 5780 } 5781 5782 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 5783 base_vha->host->hostt->supported_mode |= MODE_TARGET; 5784 5785 tgt->ha = ha; 5786 tgt->vha = base_vha; 5787 init_waitqueue_head(&tgt->waitQ); 5788 INIT_LIST_HEAD(&tgt->sess_list); 5789 INIT_LIST_HEAD(&tgt->del_sess_list); 5790 INIT_DELAYED_WORK(&tgt->sess_del_work, 5791 (void (*)(struct work_struct *))qlt_del_sess_work_fn); 5792 spin_lock_init(&tgt->sess_work_lock); 5793 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 5794 INIT_LIST_HEAD(&tgt->sess_works_list); 5795 spin_lock_init(&tgt->srr_lock); 5796 INIT_LIST_HEAD(&tgt->srr_ctio_list); 5797 INIT_LIST_HEAD(&tgt->srr_imm_list); 5798 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work); 5799 atomic_set(&tgt->tgt_global_resets_count, 0); 5800 5801 base_vha->vha_tgt.qla_tgt = tgt; 5802 5803 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 5804 "qla_target(%d): using 64 Bit PCI addressing", 5805 base_vha->vp_idx); 5806 tgt->tgt_enable_64bit_addr = 1; 5807 /* 3 is reserved */ 5808 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 5809 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX; 5810 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX; 5811 5812 if (base_vha->fc_vport) 5813 return 0; 5814 5815 mutex_lock(&qla_tgt_mutex); 5816 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 5817 mutex_unlock(&qla_tgt_mutex); 5818 5819 return 0; 5820} 5821 5822/* Must be called under tgt_host_action_mutex */ 5823int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 5824{ 5825 if (!vha->vha_tgt.qla_tgt) 5826 return 0; 5827 5828 if (vha->fc_vport) { 5829 qlt_release(vha->vha_tgt.qla_tgt); 5830 return 0; 5831 } 5832 5833 /* free left over qfull cmds */ 5834 qlt_init_term_exchange(vha); 5835 5836 mutex_lock(&qla_tgt_mutex); 5837 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 5838 mutex_unlock(&qla_tgt_mutex); 5839 5840 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 5841 vha->host_no, ha); 5842 qlt_release(vha->vha_tgt.qla_tgt); 5843 5844 return 0; 5845} 5846 5847static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 5848 unsigned char *b) 5849{ 5850 int i; 5851 5852 pr_debug("qla2xxx HW vha->node_name: "); 5853 for (i = 0; i < WWN_SIZE; i++) 5854 pr_debug("%02x ", vha->node_name[i]); 5855 pr_debug("\n"); 5856 pr_debug("qla2xxx HW vha->port_name: "); 5857 for (i = 0; i < WWN_SIZE; i++) 5858 pr_debug("%02x ", vha->port_name[i]); 5859 pr_debug("\n"); 5860 5861 pr_debug("qla2xxx passed configfs WWPN: "); 5862 put_unaligned_be64(wwpn, b); 5863 for (i = 0; i < WWN_SIZE; i++) 5864 pr_debug("%02x ", b[i]); 5865 pr_debug("\n"); 5866} 5867 5868/** 5869 * qla_tgt_lport_register - register lport with external module 5870 * 5871 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops 5872 * @wwpn: Passwd FC target WWPN 5873 * @callback: lport initialization callback for tcm_qla2xxx code 5874 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 5875 */ 5876int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 5877 u64 npiv_wwpn, u64 npiv_wwnn, 5878 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 5879{ 5880 struct qla_tgt *tgt; 5881 struct scsi_qla_host *vha; 5882 struct qla_hw_data *ha; 5883 struct Scsi_Host *host; 5884 unsigned long flags; 5885 int rc; 5886 u8 b[WWN_SIZE]; 5887 5888 mutex_lock(&qla_tgt_mutex); 5889 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 5890 vha = tgt->vha; 5891 ha = vha->hw; 5892 5893 host = vha->host; 5894 if (!host) 5895 continue; 5896 5897 if (!(host->hostt->supported_mode & MODE_TARGET)) 5898 continue; 5899 5900 spin_lock_irqsave(&ha->hardware_lock, flags); 5901 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 5902 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 5903 host->host_no); 5904 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5905 continue; 5906 } 5907 if (tgt->tgt_stop) { 5908 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 5909 host->host_no); 5910 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5911 continue; 5912 } 5913 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5914 5915 if (!scsi_host_get(host)) { 5916 ql_dbg(ql_dbg_tgt, vha, 0xe068, 5917 "Unable to scsi_host_get() for" 5918 " qla2xxx scsi_host\n"); 5919 continue; 5920 } 5921 qlt_lport_dump(vha, phys_wwpn, b); 5922 5923 if (memcmp(vha->port_name, b, WWN_SIZE)) { 5924 scsi_host_put(host); 5925 continue; 5926 } 5927 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 5928 if (rc != 0) 5929 scsi_host_put(host); 5930 5931 mutex_unlock(&qla_tgt_mutex); 5932 return rc; 5933 } 5934 mutex_unlock(&qla_tgt_mutex); 5935 5936 return -ENODEV; 5937} 5938EXPORT_SYMBOL(qlt_lport_register); 5939 5940/** 5941 * qla_tgt_lport_deregister - Degister lport 5942 * 5943 * @vha: Registered scsi_qla_host pointer 5944 */ 5945void qlt_lport_deregister(struct scsi_qla_host *vha) 5946{ 5947 struct qla_hw_data *ha = vha->hw; 5948 struct Scsi_Host *sh = vha->host; 5949 /* 5950 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 5951 */ 5952 vha->vha_tgt.target_lport_ptr = NULL; 5953 ha->tgt.tgt_ops = NULL; 5954 /* 5955 * Release the Scsi_Host reference for the underlying qla2xxx host 5956 */ 5957 scsi_host_put(sh); 5958} 5959EXPORT_SYMBOL(qlt_lport_deregister); 5960 5961/* Must be called under HW lock */ 5962static void qlt_set_mode(struct scsi_qla_host *vha) 5963{ 5964 struct qla_hw_data *ha = vha->hw; 5965 5966 switch (ql2x_ini_mode) { 5967 case QLA2XXX_INI_MODE_DISABLED: 5968 case QLA2XXX_INI_MODE_EXCLUSIVE: 5969 vha->host->active_mode = MODE_TARGET; 5970 break; 5971 case QLA2XXX_INI_MODE_ENABLED: 5972 vha->host->active_mode |= MODE_TARGET; 5973 break; 5974 default: 5975 break; 5976 } 5977 5978 if (ha->tgt.ini_mode_force_reverse) 5979 qla_reverse_ini_mode(vha); 5980} 5981 5982/* Must be called under HW lock */ 5983static void qlt_clear_mode(struct scsi_qla_host *vha) 5984{ 5985 struct qla_hw_data *ha = vha->hw; 5986 5987 switch (ql2x_ini_mode) { 5988 case QLA2XXX_INI_MODE_DISABLED: 5989 vha->host->active_mode = MODE_UNKNOWN; 5990 break; 5991 case QLA2XXX_INI_MODE_EXCLUSIVE: 5992 vha->host->active_mode = MODE_INITIATOR; 5993 break; 5994 case QLA2XXX_INI_MODE_ENABLED: 5995 vha->host->active_mode &= ~MODE_TARGET; 5996 break; 5997 default: 5998 break; 5999 } 6000 6001 if (ha->tgt.ini_mode_force_reverse) 6002 qla_reverse_ini_mode(vha); 6003} 6004 6005/* 6006 * qla_tgt_enable_vha - NO LOCK HELD 6007 * 6008 * host_reset, bring up w/ Target Mode Enabled 6009 */ 6010void 6011qlt_enable_vha(struct scsi_qla_host *vha) 6012{ 6013 struct qla_hw_data *ha = vha->hw; 6014 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6015 unsigned long flags; 6016 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6017 6018 if (!tgt) { 6019 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6020 "Unable to locate qla_tgt pointer from" 6021 " struct qla_hw_data\n"); 6022 dump_stack(); 6023 return; 6024 } 6025 6026 spin_lock_irqsave(&ha->hardware_lock, flags); 6027 tgt->tgt_stopped = 0; 6028 qlt_set_mode(vha); 6029 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6030 6031 if (vha->vp_idx) { 6032 qla24xx_disable_vp(vha); 6033 qla24xx_enable_vp(vha); 6034 } else { 6035 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6036 qla2xxx_wake_dpc(base_vha); 6037 qla2x00_wait_for_hba_online(base_vha); 6038 } 6039} 6040EXPORT_SYMBOL(qlt_enable_vha); 6041 6042/* 6043 * qla_tgt_disable_vha - NO LOCK HELD 6044 * 6045 * Disable Target Mode and reset the adapter 6046 */ 6047static void qlt_disable_vha(struct scsi_qla_host *vha) 6048{ 6049 struct qla_hw_data *ha = vha->hw; 6050 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6051 unsigned long flags; 6052 6053 if (!tgt) { 6054 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6055 "Unable to locate qla_tgt pointer from" 6056 " struct qla_hw_data\n"); 6057 dump_stack(); 6058 return; 6059 } 6060 6061 spin_lock_irqsave(&ha->hardware_lock, flags); 6062 qlt_clear_mode(vha); 6063 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6064 6065 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6066 qla2xxx_wake_dpc(vha); 6067 qla2x00_wait_for_hba_online(vha); 6068} 6069 6070/* 6071 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6072 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6073 * members. 6074 */ 6075void 6076qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6077{ 6078 if (!qla_tgt_mode_enabled(vha)) 6079 return; 6080 6081 vha->vha_tgt.qla_tgt = NULL; 6082 6083 mutex_init(&vha->vha_tgt.tgt_mutex); 6084 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6085 6086 qlt_clear_mode(vha); 6087 6088 /* 6089 * NOTE: Currently the value is kept the same for <24xx and 6090 * >=24xx ISPs. If it is necessary to change it, 6091 * the check should be added for specific ISPs, 6092 * assigning the value appropriately. 6093 */ 6094 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6095 6096 qlt_add_target(ha, vha); 6097} 6098 6099void 6100qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) 6101{ 6102 /* 6103 * FC-4 Feature bit 0 indicates target functionality to the name server. 6104 */ 6105 if (qla_tgt_mode_enabled(vha)) { 6106 if (qla_ini_mode_enabled(vha)) 6107 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; 6108 else 6109 ct_req->req.rff_id.fc4_feature = BIT_0; 6110 } else if (qla_ini_mode_enabled(vha)) { 6111 ct_req->req.rff_id.fc4_feature = BIT_1; 6112 } 6113} 6114 6115/* 6116 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6117 * @ha: HA context 6118 * 6119 * Beginning of ATIO ring has initialization control block already built 6120 * by nvram config routine. 6121 * 6122 * Returns 0 on success. 6123 */ 6124void 6125qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6126{ 6127 struct qla_hw_data *ha = vha->hw; 6128 uint16_t cnt; 6129 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6130 6131 if (!qla_tgt_mode_enabled(vha)) 6132 return; 6133 6134 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6135 pkt->u.raw.signature = ATIO_PROCESSED; 6136 pkt++; 6137 } 6138 6139} 6140 6141/* 6142 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6143 * @ha: SCSI driver HA context 6144 */ 6145void 6146qlt_24xx_process_atio_queue(struct scsi_qla_host *vha) 6147{ 6148 struct qla_hw_data *ha = vha->hw; 6149 struct atio_from_isp *pkt; 6150 int cnt, i; 6151 6152 if (!vha->flags.online) 6153 return; 6154 6155 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) { 6156 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6157 cnt = pkt->u.raw.entry_count; 6158 6159 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt); 6160 6161 for (i = 0; i < cnt; i++) { 6162 ha->tgt.atio_ring_index++; 6163 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6164 ha->tgt.atio_ring_index = 0; 6165 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6166 } else 6167 ha->tgt.atio_ring_ptr++; 6168 6169 pkt->u.raw.signature = ATIO_PROCESSED; 6170 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6171 } 6172 wmb(); 6173 } 6174 6175 /* Adjust ring index */ 6176 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6177} 6178 6179void 6180qlt_24xx_config_rings(struct scsi_qla_host *vha) 6181{ 6182 struct qla_hw_data *ha = vha->hw; 6183 if (!QLA_TGT_MODE_ENABLED()) 6184 return; 6185 6186 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6187 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6188 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6189 6190 if (IS_ATIO_MSIX_CAPABLE(ha)) { 6191 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6192 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6193 6194 icb->msix_atio = cpu_to_le16(msix->entry); 6195 ql_dbg(ql_dbg_init, vha, 0xf072, 6196 "Registering ICB vector 0x%x for atio que.\n", 6197 msix->entry); 6198 } 6199} 6200 6201void 6202qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6203{ 6204 struct qla_hw_data *ha = vha->hw; 6205 6206 if (qla_tgt_mode_enabled(vha)) { 6207 if (!ha->tgt.saved_set) { 6208 /* We save only once */ 6209 ha->tgt.saved_exchange_count = nv->exchange_count; 6210 ha->tgt.saved_firmware_options_1 = 6211 nv->firmware_options_1; 6212 ha->tgt.saved_firmware_options_2 = 6213 nv->firmware_options_2; 6214 ha->tgt.saved_firmware_options_3 = 6215 nv->firmware_options_3; 6216 ha->tgt.saved_set = 1; 6217 } 6218 6219 nv->exchange_count = __constant_cpu_to_le16(0xFFFF); 6220 6221 /* Enable target mode */ 6222 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4); 6223 6224 /* Disable ini mode, if requested */ 6225 if (!qla_ini_mode_enabled(vha)) 6226 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5); 6227 6228 /* Disable Full Login after LIP */ 6229 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13); 6230 /* Enable initial LIP */ 6231 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9); 6232 if (ql2xtgt_tape_enable) 6233 /* Enable FC Tape support */ 6234 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6235 else 6236 /* Disable FC Tape support */ 6237 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6238 6239 /* Disable Full Login after LIP */ 6240 nv->host_p &= __constant_cpu_to_le32(~BIT_10); 6241 /* Enable target PRLI control */ 6242 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14); 6243 } else { 6244 if (ha->tgt.saved_set) { 6245 nv->exchange_count = ha->tgt.saved_exchange_count; 6246 nv->firmware_options_1 = 6247 ha->tgt.saved_firmware_options_1; 6248 nv->firmware_options_2 = 6249 ha->tgt.saved_firmware_options_2; 6250 nv->firmware_options_3 = 6251 ha->tgt.saved_firmware_options_3; 6252 } 6253 return; 6254 } 6255 6256 /* out-of-order frames reassembly */ 6257 nv->firmware_options_3 |= BIT_6|BIT_9; 6258 6259 if (ha->tgt.enable_class_2) { 6260 if (vha->flags.init_done) 6261 fc_host_supported_classes(vha->host) = 6262 FC_COS_CLASS2 | FC_COS_CLASS3; 6263 6264 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8); 6265 } else { 6266 if (vha->flags.init_done) 6267 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6268 6269 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8); 6270 } 6271} 6272 6273void 6274qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6275 struct init_cb_24xx *icb) 6276{ 6277 struct qla_hw_data *ha = vha->hw; 6278 6279 if (ha->tgt.node_name_set) { 6280 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6281 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14); 6282 } 6283} 6284 6285void 6286qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6287{ 6288 struct qla_hw_data *ha = vha->hw; 6289 6290 if (!QLA_TGT_MODE_ENABLED()) 6291 return; 6292 6293 if (qla_tgt_mode_enabled(vha)) { 6294 if (!ha->tgt.saved_set) { 6295 /* We save only once */ 6296 ha->tgt.saved_exchange_count = nv->exchange_count; 6297 ha->tgt.saved_firmware_options_1 = 6298 nv->firmware_options_1; 6299 ha->tgt.saved_firmware_options_2 = 6300 nv->firmware_options_2; 6301 ha->tgt.saved_firmware_options_3 = 6302 nv->firmware_options_3; 6303 ha->tgt.saved_set = 1; 6304 } 6305 6306 nv->exchange_count = __constant_cpu_to_le16(0xFFFF); 6307 6308 /* Enable target mode */ 6309 nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4); 6310 6311 /* Disable ini mode, if requested */ 6312 if (!qla_ini_mode_enabled(vha)) 6313 nv->firmware_options_1 |= 6314 __constant_cpu_to_le32(BIT_5); 6315 6316 /* Disable Full Login after LIP */ 6317 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13); 6318 /* Enable initial LIP */ 6319 nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9); 6320 if (ql2xtgt_tape_enable) 6321 /* Enable FC tape support */ 6322 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6323 else 6324 /* Disable FC tape support */ 6325 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6326 6327 /* Disable Full Login after LIP */ 6328 nv->host_p &= __constant_cpu_to_le32(~BIT_10); 6329 /* Enable target PRLI control */ 6330 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14); 6331 } else { 6332 if (ha->tgt.saved_set) { 6333 nv->exchange_count = ha->tgt.saved_exchange_count; 6334 nv->firmware_options_1 = 6335 ha->tgt.saved_firmware_options_1; 6336 nv->firmware_options_2 = 6337 ha->tgt.saved_firmware_options_2; 6338 nv->firmware_options_3 = 6339 ha->tgt.saved_firmware_options_3; 6340 } 6341 return; 6342 } 6343 6344 /* out-of-order frames reassembly */ 6345 nv->firmware_options_3 |= BIT_6|BIT_9; 6346 6347 if (ha->tgt.enable_class_2) { 6348 if (vha->flags.init_done) 6349 fc_host_supported_classes(vha->host) = 6350 FC_COS_CLASS2 | FC_COS_CLASS3; 6351 6352 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8); 6353 } else { 6354 if (vha->flags.init_done) 6355 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6356 6357 nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8); 6358 } 6359} 6360 6361void 6362qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6363 struct init_cb_81xx *icb) 6364{ 6365 struct qla_hw_data *ha = vha->hw; 6366 6367 if (!QLA_TGT_MODE_ENABLED()) 6368 return; 6369 6370 if (ha->tgt.node_name_set) { 6371 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6372 icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14); 6373 } 6374} 6375 6376void 6377qlt_83xx_iospace_config(struct qla_hw_data *ha) 6378{ 6379 if (!QLA_TGT_MODE_ENABLED()) 6380 return; 6381 6382 ha->msix_count += 1; /* For ATIO Q */ 6383} 6384 6385int 6386qlt_24xx_process_response_error(struct scsi_qla_host *vha, 6387 struct sts_entry_24xx *pkt) 6388{ 6389 switch (pkt->entry_type) { 6390 case ABTS_RECV_24XX: 6391 case ABTS_RESP_24XX: 6392 case CTIO_TYPE7: 6393 case NOTIFY_ACK_TYPE: 6394 case CTIO_CRC2: 6395 return 1; 6396 default: 6397 return 0; 6398 } 6399} 6400 6401void 6402qlt_modify_vp_config(struct scsi_qla_host *vha, 6403 struct vp_config_entry_24xx *vpmod) 6404{ 6405 if (qla_tgt_mode_enabled(vha)) 6406 vpmod->options_idx1 &= ~BIT_5; 6407 /* Disable ini mode, if requested */ 6408 if (!qla_ini_mode_enabled(vha)) 6409 vpmod->options_idx1 &= ~BIT_4; 6410} 6411 6412void 6413qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6414{ 6415 if (!QLA_TGT_MODE_ENABLED()) 6416 return; 6417 6418 if (ha->mqenable || IS_QLA83XX(ha)) { 6419 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6420 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6421 } else { 6422 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6423 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6424 } 6425 6426 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6427 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 6428 qlt_clear_mode(base_vha); 6429} 6430 6431irqreturn_t 6432qla83xx_msix_atio_q(int irq, void *dev_id) 6433{ 6434 struct rsp_que *rsp; 6435 scsi_qla_host_t *vha; 6436 struct qla_hw_data *ha; 6437 unsigned long flags; 6438 6439 rsp = (struct rsp_que *) dev_id; 6440 ha = rsp->hw; 6441 vha = pci_get_drvdata(ha->pdev); 6442 6443 spin_lock_irqsave(&ha->hardware_lock, flags); 6444 6445 qlt_24xx_process_atio_queue(vha); 6446 qla24xx_process_response_queue(vha, rsp); 6447 6448 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6449 6450 return IRQ_HANDLED; 6451} 6452 6453int 6454qlt_mem_alloc(struct qla_hw_data *ha) 6455{ 6456 if (!QLA_TGT_MODE_ENABLED()) 6457 return 0; 6458 6459 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * 6460 MAX_MULTI_ID_FABRIC, GFP_KERNEL); 6461 if (!ha->tgt.tgt_vp_map) 6462 return -ENOMEM; 6463 6464 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 6465 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 6466 &ha->tgt.atio_dma, GFP_KERNEL); 6467 if (!ha->tgt.atio_ring) { 6468 kfree(ha->tgt.tgt_vp_map); 6469 return -ENOMEM; 6470 } 6471 return 0; 6472} 6473 6474void 6475qlt_mem_free(struct qla_hw_data *ha) 6476{ 6477 if (!QLA_TGT_MODE_ENABLED()) 6478 return; 6479 6480 if (ha->tgt.atio_ring) { 6481 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 6482 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 6483 ha->tgt.atio_dma); 6484 } 6485 kfree(ha->tgt.tgt_vp_map); 6486} 6487 6488/* vport_slock to be held by the caller */ 6489void 6490qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 6491{ 6492 if (!QLA_TGT_MODE_ENABLED()) 6493 return; 6494 6495 switch (cmd) { 6496 case SET_VP_IDX: 6497 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 6498 break; 6499 case SET_AL_PA: 6500 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx; 6501 break; 6502 case RESET_VP_IDX: 6503 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 6504 break; 6505 case RESET_AL_PA: 6506 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0; 6507 break; 6508 } 6509} 6510 6511static int __init qlt_parse_ini_mode(void) 6512{ 6513 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 6514 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 6515 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 6516 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 6517 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 6518 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 6519 else 6520 return false; 6521 6522 return true; 6523} 6524 6525int __init qlt_init(void) 6526{ 6527 int ret; 6528 6529 if (!qlt_parse_ini_mode()) { 6530 ql_log(ql_log_fatal, NULL, 0xe06b, 6531 "qlt_parse_ini_mode() failed\n"); 6532 return -EINVAL; 6533 } 6534 6535 if (!QLA_TGT_MODE_ENABLED()) 6536 return 0; 6537 6538 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 6539 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 6540 qla_tgt_mgmt_cmd), 0, NULL); 6541 if (!qla_tgt_mgmt_cmd_cachep) { 6542 ql_log(ql_log_fatal, NULL, 0xe06d, 6543 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 6544 return -ENOMEM; 6545 } 6546 6547 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 6548 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 6549 if (!qla_tgt_mgmt_cmd_mempool) { 6550 ql_log(ql_log_fatal, NULL, 0xe06e, 6551 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 6552 ret = -ENOMEM; 6553 goto out_mgmt_cmd_cachep; 6554 } 6555 6556 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 6557 if (!qla_tgt_wq) { 6558 ql_log(ql_log_fatal, NULL, 0xe06f, 6559 "alloc_workqueue for qla_tgt_wq failed\n"); 6560 ret = -ENOMEM; 6561 goto out_cmd_mempool; 6562 } 6563 /* 6564 * Return 1 to signal that initiator-mode is being disabled 6565 */ 6566 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 6567 6568out_cmd_mempool: 6569 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6570out_mgmt_cmd_cachep: 6571 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6572 return ret; 6573} 6574 6575void qlt_exit(void) 6576{ 6577 if (!QLA_TGT_MODE_ENABLED()) 6578 return; 6579 6580 destroy_workqueue(qla_tgt_wq); 6581 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6582 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6583} 6584