1 /* 2 * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx 3 * 4 * based on qla2x00t.c code: 5 * 6 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 7 * Copyright (C) 2004 - 2005 Leonid Stoljar 8 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 9 * Copyright (C) 2006 - 2010 ID7 Ltd. 10 * 11 * Forward port and refactoring to modern qla2xxx and target/configfs 12 * 13 * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation, version 2 18 * of the License. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/types.h> 29 #include <linux/blkdev.h> 30 #include <linux/interrupt.h> 31 #include <linux/pci.h> 32 #include <linux/delay.h> 33 #include <linux/list.h> 34 #include <linux/workqueue.h> 35 #include <asm/unaligned.h> 36 #include <scsi/scsi.h> 37 #include <scsi/scsi_host.h> 38 #include <scsi/scsi_tcq.h> 39 #include <target/target_core_base.h> 40 #include <target/target_core_fabric.h> 41 42 #include "qla_def.h" 43 #include "qla_target.h" 44 45 static int ql2xtgt_tape_enable; 46 module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); 47 MODULE_PARM_DESC(ql2xtgt_tape_enable, 48 "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); 49 50 static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; 51 module_param(qlini_mode, charp, S_IRUGO); 52 MODULE_PARM_DESC(qlini_mode, 53 "Determines when initiator mode will be enabled. Possible values: " 54 "\"exclusive\" - initiator mode will be enabled on load, " 55 "disabled on enabling target mode and then on disabling target mode " 56 "enabled back; " 57 "\"disabled\" - initiator mode will never be enabled; " 58 "\"enabled\" (default) - initiator mode will always stay enabled."); 59 60 int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 61 62 static int temp_sam_status = SAM_STAT_BUSY; 63 64 /* 65 * From scsi/fc/fc_fcp.h 66 */ 67 enum 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 */ 102 static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, 103 struct atio_from_isp *pkt, uint8_t); 104 static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); 105 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, 106 int fn, void *iocb, int flags); 107 static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd 108 *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); 109 static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha, 110 struct qla_tgt_srr_imm *imm, int ha_lock); 111 static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, 112 struct qla_tgt_cmd *cmd); 113 static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 114 struct atio_from_isp *atio, uint16_t status, int qfull); 115 static void qlt_disable_vha(struct scsi_qla_host *vha); 116 static void qlt_clear_tgt_db(struct qla_tgt *tgt); 117 static 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 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 122 struct imm_ntfy_from_isp *imm, int ha_locked); 123 /* 124 * Global Variables 125 */ 126 static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; 127 static struct kmem_cache *qla_tgt_plogi_cachep; 128 static mempool_t *qla_tgt_mgmt_cmd_mempool; 129 static struct workqueue_struct *qla_tgt_wq; 130 static DEFINE_MUTEX(qla_tgt_mutex); 131 static LIST_HEAD(qla_tgt_glist); 132 133 /* This API intentionally takes dest as a parameter, rather than returning 134 * int value to avoid caller forgetting to issue wmb() after the store */ 135 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) 136 { 137 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); 138 *dest = atomic_inc_return(&base_vha->generation_tick); 139 /* memory barrier */ 140 wmb(); 141 } 142 143 /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */ 144 static struct qla_tgt_sess *qlt_find_sess_by_port_name( 145 struct qla_tgt *tgt, 146 const uint8_t *port_name) 147 { 148 struct qla_tgt_sess *sess; 149 150 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) { 151 if (!memcmp(sess->port_name, port_name, WWN_SIZE)) 152 return sess; 153 } 154 155 return NULL; 156 } 157 158 /* Might release hw lock, then reaquire!! */ 159 static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) 160 { 161 /* Send marker if required */ 162 if (unlikely(vha->marker_needed != 0)) { 163 int rc = qla2x00_issue_marker(vha, vha_locked); 164 if (rc != QLA_SUCCESS) { 165 ql_dbg(ql_dbg_tgt, vha, 0xe03d, 166 "qla_target(%d): issue_marker() failed\n", 167 vha->vp_idx); 168 } 169 return rc; 170 } 171 return QLA_SUCCESS; 172 } 173 174 static inline 175 struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, 176 uint8_t *d_id) 177 { 178 struct qla_hw_data *ha = vha->hw; 179 uint8_t vp_idx; 180 181 if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0])) 182 return NULL; 183 184 if (vha->d_id.b.al_pa == d_id[2]) 185 return vha; 186 187 BUG_ON(ha->tgt.tgt_vp_map == NULL); 188 vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx; 189 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 190 return ha->tgt.tgt_vp_map[vp_idx].vha; 191 192 return NULL; 193 } 194 195 static inline 196 struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, 197 uint16_t vp_idx) 198 { 199 struct qla_hw_data *ha = vha->hw; 200 201 if (vha->vp_idx == vp_idx) 202 return vha; 203 204 BUG_ON(ha->tgt.tgt_vp_map == NULL); 205 if (likely(test_bit(vp_idx, ha->vp_idx_map))) 206 return ha->tgt.tgt_vp_map[vp_idx].vha; 207 208 return NULL; 209 } 210 211 static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) 212 { 213 unsigned long flags; 214 215 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 216 217 vha->hw->tgt.num_pend_cmds++; 218 if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds) 219 vha->hw->qla_stats.stat_max_pend_cmds = 220 vha->hw->tgt.num_pend_cmds; 221 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 222 } 223 static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) 224 { 225 unsigned long flags; 226 227 spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); 228 vha->hw->tgt.num_pend_cmds--; 229 spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); 230 } 231 232 static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, 233 struct atio_from_isp *atio, uint8_t ha_locked) 234 { 235 ql_dbg(ql_dbg_tgt, vha, 0xe072, 236 "%s: qla_target(%d): type %x ox_id %04x\n", 237 __func__, vha->vp_idx, atio->u.raw.entry_type, 238 be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); 239 240 switch (atio->u.raw.entry_type) { 241 case ATIO_TYPE7: 242 { 243 struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, 244 atio->u.isp24.fcp_hdr.d_id); 245 if (unlikely(NULL == host)) { 246 ql_dbg(ql_dbg_tgt, vha, 0xe03e, 247 "qla_target(%d): Received ATIO_TYPE7 " 248 "with unknown d_id %x:%x:%x\n", vha->vp_idx, 249 atio->u.isp24.fcp_hdr.d_id[0], 250 atio->u.isp24.fcp_hdr.d_id[1], 251 atio->u.isp24.fcp_hdr.d_id[2]); 252 break; 253 } 254 qlt_24xx_atio_pkt(host, atio, ha_locked); 255 break; 256 } 257 258 case IMMED_NOTIFY_TYPE: 259 { 260 struct scsi_qla_host *host = vha; 261 struct imm_ntfy_from_isp *entry = 262 (struct imm_ntfy_from_isp *)atio; 263 264 if ((entry->u.isp24.vp_index != 0xFF) && 265 (entry->u.isp24.nport_handle != 0xFFFF)) { 266 host = qlt_find_host_by_vp_idx(vha, 267 entry->u.isp24.vp_index); 268 if (unlikely(!host)) { 269 ql_dbg(ql_dbg_tgt, vha, 0xe03f, 270 "qla_target(%d): Received " 271 "ATIO (IMMED_NOTIFY_TYPE) " 272 "with unknown vp_index %d\n", 273 vha->vp_idx, entry->u.isp24.vp_index); 274 break; 275 } 276 } 277 qlt_24xx_atio_pkt(host, atio, ha_locked); 278 break; 279 } 280 281 default: 282 ql_dbg(ql_dbg_tgt, vha, 0xe040, 283 "qla_target(%d): Received unknown ATIO atio " 284 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 285 break; 286 } 287 288 return false; 289 } 290 291 void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt) 292 { 293 switch (pkt->entry_type) { 294 case CTIO_CRC2: 295 ql_dbg(ql_dbg_tgt, vha, 0xe073, 296 "qla_target(%d):%s: CRC2 Response pkt\n", 297 vha->vp_idx, __func__); 298 case CTIO_TYPE7: 299 { 300 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 301 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 302 entry->vp_index); 303 if (unlikely(!host)) { 304 ql_dbg(ql_dbg_tgt, vha, 0xe041, 305 "qla_target(%d): Response pkt (CTIO_TYPE7) " 306 "received, with unknown vp_index %d\n", 307 vha->vp_idx, entry->vp_index); 308 break; 309 } 310 qlt_response_pkt(host, pkt); 311 break; 312 } 313 314 case IMMED_NOTIFY_TYPE: 315 { 316 struct scsi_qla_host *host = vha; 317 struct imm_ntfy_from_isp *entry = 318 (struct imm_ntfy_from_isp *)pkt; 319 320 host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); 321 if (unlikely(!host)) { 322 ql_dbg(ql_dbg_tgt, vha, 0xe042, 323 "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " 324 "received, with unknown vp_index %d\n", 325 vha->vp_idx, entry->u.isp24.vp_index); 326 break; 327 } 328 qlt_response_pkt(host, pkt); 329 break; 330 } 331 332 case NOTIFY_ACK_TYPE: 333 { 334 struct scsi_qla_host *host = vha; 335 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 336 337 if (0xFF != entry->u.isp24.vp_index) { 338 host = qlt_find_host_by_vp_idx(vha, 339 entry->u.isp24.vp_index); 340 if (unlikely(!host)) { 341 ql_dbg(ql_dbg_tgt, vha, 0xe043, 342 "qla_target(%d): Response " 343 "pkt (NOTIFY_ACK_TYPE) " 344 "received, with unknown " 345 "vp_index %d\n", vha->vp_idx, 346 entry->u.isp24.vp_index); 347 break; 348 } 349 } 350 qlt_response_pkt(host, pkt); 351 break; 352 } 353 354 case ABTS_RECV_24XX: 355 { 356 struct abts_recv_from_24xx *entry = 357 (struct abts_recv_from_24xx *)pkt; 358 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 359 entry->vp_index); 360 if (unlikely(!host)) { 361 ql_dbg(ql_dbg_tgt, vha, 0xe044, 362 "qla_target(%d): Response pkt " 363 "(ABTS_RECV_24XX) received, with unknown " 364 "vp_index %d\n", vha->vp_idx, entry->vp_index); 365 break; 366 } 367 qlt_response_pkt(host, pkt); 368 break; 369 } 370 371 case ABTS_RESP_24XX: 372 { 373 struct abts_resp_to_24xx *entry = 374 (struct abts_resp_to_24xx *)pkt; 375 struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, 376 entry->vp_index); 377 if (unlikely(!host)) { 378 ql_dbg(ql_dbg_tgt, vha, 0xe045, 379 "qla_target(%d): Response pkt " 380 "(ABTS_RECV_24XX) received, with unknown " 381 "vp_index %d\n", vha->vp_idx, entry->vp_index); 382 break; 383 } 384 qlt_response_pkt(host, pkt); 385 break; 386 } 387 388 default: 389 qlt_response_pkt(vha, pkt); 390 break; 391 } 392 393 } 394 395 /* 396 * All qlt_plogi_ack_t operations are protected by hardware_lock 397 */ 398 399 /* 400 * This is a zero-base ref-counting solution, since hardware_lock 401 * guarantees that ref_count is not modified concurrently. 402 * Upon successful return content of iocb is undefined 403 */ 404 static qlt_plogi_ack_t * 405 qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, 406 struct imm_ntfy_from_isp *iocb) 407 { 408 qlt_plogi_ack_t *pla; 409 410 list_for_each_entry(pla, &vha->plogi_ack_list, list) { 411 if (pla->id.b24 == id->b24) { 412 qlt_send_term_imm_notif(vha, &pla->iocb, 1); 413 pla->iocb = *iocb; 414 return pla; 415 } 416 } 417 418 pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); 419 if (!pla) { 420 ql_dbg(ql_dbg_async, vha, 0x5088, 421 "qla_target(%d): Allocation of plogi_ack failed\n", 422 vha->vp_idx); 423 return NULL; 424 } 425 426 pla->iocb = *iocb; 427 pla->id = *id; 428 list_add_tail(&pla->list, &vha->plogi_ack_list); 429 430 return pla; 431 } 432 433 static void qlt_plogi_ack_unref(struct scsi_qla_host *vha, qlt_plogi_ack_t *pla) 434 { 435 BUG_ON(!pla->ref_count); 436 pla->ref_count--; 437 438 if (pla->ref_count) 439 return; 440 441 ql_dbg(ql_dbg_async, vha, 0x5089, 442 "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" 443 " exch %#x ox_id %#x\n", pla->iocb.u.isp24.port_name, 444 pla->iocb.u.isp24.port_id[2], pla->iocb.u.isp24.port_id[1], 445 pla->iocb.u.isp24.port_id[0], 446 le16_to_cpu(pla->iocb.u.isp24.nport_handle), 447 pla->iocb.u.isp24.exchange_address, pla->iocb.ox_id); 448 qlt_send_notify_ack(vha, &pla->iocb, 0, 0, 0, 0, 0, 0); 449 450 list_del(&pla->list); 451 kmem_cache_free(qla_tgt_plogi_cachep, pla); 452 } 453 454 static void 455 qlt_plogi_ack_link(struct scsi_qla_host *vha, qlt_plogi_ack_t *pla, 456 struct qla_tgt_sess *sess, qlt_plogi_link_t link) 457 { 458 /* Inc ref_count first because link might already be pointing at pla */ 459 pla->ref_count++; 460 461 if (sess->plogi_link[link]) 462 qlt_plogi_ack_unref(vha, sess->plogi_link[link]); 463 464 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, 465 "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" 466 " s_id %02x:%02x:%02x, ref=%d\n", sess, link, sess->port_name, 467 pla->iocb.u.isp24.port_name, pla->iocb.u.isp24.port_id[2], 468 pla->iocb.u.isp24.port_id[1], pla->iocb.u.isp24.port_id[0], 469 pla->ref_count); 470 471 sess->plogi_link[link] = pla; 472 } 473 474 typedef struct { 475 /* These fields must be initialized by the caller */ 476 port_id_t id; 477 /* 478 * number of cmds dropped while we were waiting for 479 * initiator to ack LOGO initialize to 1 if LOGO is 480 * triggered by a command, otherwise, to 0 481 */ 482 int cmd_count; 483 484 /* These fields are used by callee */ 485 struct list_head list; 486 } qlt_port_logo_t; 487 488 static void 489 qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) 490 { 491 qlt_port_logo_t *tmp; 492 int res; 493 494 mutex_lock(&vha->vha_tgt.tgt_mutex); 495 496 list_for_each_entry(tmp, &vha->logo_list, list) { 497 if (tmp->id.b24 == logo->id.b24) { 498 tmp->cmd_count += logo->cmd_count; 499 mutex_unlock(&vha->vha_tgt.tgt_mutex); 500 return; 501 } 502 } 503 504 list_add_tail(&logo->list, &vha->logo_list); 505 506 mutex_unlock(&vha->vha_tgt.tgt_mutex); 507 508 res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); 509 510 mutex_lock(&vha->vha_tgt.tgt_mutex); 511 list_del(&logo->list); 512 mutex_unlock(&vha->vha_tgt.tgt_mutex); 513 514 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, 515 "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", 516 logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, 517 logo->cmd_count, res); 518 } 519 520 static void qlt_free_session_done(struct work_struct *work) 521 { 522 struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess, 523 free_work); 524 struct qla_tgt *tgt = sess->tgt; 525 struct scsi_qla_host *vha = sess->vha; 526 struct qla_hw_data *ha = vha->hw; 527 unsigned long flags; 528 bool logout_started = false; 529 fc_port_t fcport; 530 531 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084, 532 "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" 533 " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", 534 __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, 535 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, 536 sess->logout_on_delete, sess->keep_nport_handle, 537 sess->send_els_logo); 538 539 BUG_ON(!tgt); 540 541 if (sess->send_els_logo) { 542 qlt_port_logo_t logo; 543 logo.id = sess->s_id; 544 logo.cmd_count = 0; 545 qlt_send_first_logo(vha, &logo); 546 } 547 548 if (sess->logout_on_delete) { 549 int rc; 550 551 memset(&fcport, 0, sizeof(fcport)); 552 fcport.loop_id = sess->loop_id; 553 fcport.d_id = sess->s_id; 554 memcpy(fcport.port_name, sess->port_name, WWN_SIZE); 555 fcport.vha = vha; 556 fcport.tgt_session = sess; 557 558 rc = qla2x00_post_async_logout_work(vha, &fcport, NULL); 559 if (rc != QLA_SUCCESS) 560 ql_log(ql_log_warn, vha, 0xf085, 561 "Schedule logo failed sess %p rc %d\n", 562 sess, rc); 563 else 564 logout_started = true; 565 } 566 567 /* 568 * Release the target session for FC Nexus from fabric module code. 569 */ 570 if (sess->se_sess != NULL) 571 ha->tgt.tgt_ops->free_session(sess); 572 573 if (logout_started) { 574 bool traced = false; 575 576 while (!ACCESS_ONCE(sess->logout_completed)) { 577 if (!traced) { 578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086, 579 "%s: waiting for sess %p logout\n", 580 __func__, sess); 581 traced = true; 582 } 583 msleep(100); 584 } 585 586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087, 587 "%s: sess %p logout completed\n", 588 __func__, sess); 589 } 590 591 spin_lock_irqsave(&ha->hardware_lock, flags); 592 593 { 594 qlt_plogi_ack_t *own = 595 sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; 596 qlt_plogi_ack_t *con = 597 sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; 598 599 if (con) { 600 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, 601 "se_sess %p / sess %p port %8phC is gone," 602 " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", 603 sess->se_sess, sess, sess->port_name, 604 own ? "releasing own PLOGI" : 605 "no own PLOGI pending", 606 own ? own->ref_count : -1, 607 con->iocb.u.isp24.port_name, con->ref_count); 608 qlt_plogi_ack_unref(vha, con); 609 } else { 610 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, 611 "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", 612 sess->se_sess, sess, sess->port_name, 613 own ? "releasing own PLOGI" : 614 "no own PLOGI pending", 615 own ? own->ref_count : -1); 616 } 617 618 if (own) 619 qlt_plogi_ack_unref(vha, own); 620 } 621 622 list_del(&sess->sess_list_entry); 623 624 spin_unlock_irqrestore(&ha->hardware_lock, flags); 625 626 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, 627 "Unregistration of sess %p finished\n", sess); 628 629 kfree(sess); 630 /* 631 * We need to protect against race, when tgt is freed before or 632 * inside wake_up() 633 */ 634 tgt->sess_count--; 635 if (tgt->sess_count == 0) 636 wake_up_all(&tgt->waitQ); 637 } 638 639 /* ha->tgt.sess_lock supposed to be held on entry */ 640 static void qlt_release_session(struct kref *kref) 641 { 642 struct qla_tgt_sess *sess = 643 container_of(kref, struct qla_tgt_sess, sess_kref); 644 struct scsi_qla_host *vha = sess->vha; 645 646 if (sess->se_sess) 647 vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); 648 649 if (!list_empty(&sess->del_list_entry)) 650 list_del_init(&sess->del_list_entry); 651 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 652 653 INIT_WORK(&sess->free_work, qlt_free_session_done); 654 schedule_work(&sess->free_work); 655 } 656 657 void qlt_put_sess(struct qla_tgt_sess *sess) 658 { 659 if (!sess) 660 return; 661 662 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 663 kref_put(&sess->sess_kref, qlt_release_session); 664 } 665 EXPORT_SYMBOL(qlt_put_sess); 666 667 static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) 668 { 669 struct qla_hw_data *ha = vha->hw; 670 struct qla_tgt_sess *sess = NULL; 671 uint32_t unpacked_lun, lun = 0; 672 uint16_t loop_id; 673 int res = 0; 674 struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; 675 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 676 unsigned long flags; 677 678 loop_id = le16_to_cpu(n->u.isp24.nport_handle); 679 if (loop_id == 0xFFFF) { 680 /* Global event */ 681 atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 682 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 683 qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); 684 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 685 #if 0 /* FIXME: do we need to choose a session here? */ 686 if (!list_empty(&ha->tgt.qla_tgt->sess_list)) { 687 sess = list_entry(ha->tgt.qla_tgt->sess_list.next, 688 typeof(*sess), sess_list_entry); 689 switch (mcmd) { 690 case QLA_TGT_NEXUS_LOSS_SESS: 691 mcmd = QLA_TGT_NEXUS_LOSS; 692 break; 693 case QLA_TGT_ABORT_ALL_SESS: 694 mcmd = QLA_TGT_ABORT_ALL; 695 break; 696 case QLA_TGT_NEXUS_LOSS: 697 case QLA_TGT_ABORT_ALL: 698 break; 699 default: 700 ql_dbg(ql_dbg_tgt, vha, 0xe046, 701 "qla_target(%d): Not allowed " 702 "command %x in %s", vha->vp_idx, 703 mcmd, __func__); 704 sess = NULL; 705 break; 706 } 707 } else 708 sess = NULL; 709 #endif 710 } else { 711 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 712 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 713 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 714 } 715 716 ql_dbg(ql_dbg_tgt, vha, 0xe000, 717 "Using sess for qla_tgt_reset: %p\n", sess); 718 if (!sess) { 719 res = -ESRCH; 720 return res; 721 } 722 723 ql_dbg(ql_dbg_tgt, vha, 0xe047, 724 "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " 725 "loop_id %d)\n", vha->host_no, sess, sess->port_name, 726 mcmd, loop_id); 727 728 lun = a->u.isp24.fcp_cmnd.lun; 729 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 730 731 return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd, 732 iocb, QLA24XX_MGMT_SEND_NACK); 733 } 734 735 /* ha->tgt.sess_lock supposed to be held on entry */ 736 static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess, 737 bool immediate) 738 { 739 struct qla_tgt *tgt = sess->tgt; 740 uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5; 741 742 if (sess->deleted) { 743 /* Upgrade to unconditional deletion in case it was temporary */ 744 if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING) 745 list_del(&sess->del_list_entry); 746 else 747 return; 748 } 749 750 ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, 751 "Scheduling sess %p for deletion\n", sess); 752 753 if (immediate) { 754 dev_loss_tmo = 0; 755 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 756 list_add(&sess->del_list_entry, &tgt->del_sess_list); 757 } else { 758 sess->deleted = QLA_SESS_DELETION_PENDING; 759 list_add_tail(&sess->del_list_entry, &tgt->del_sess_list); 760 } 761 762 sess->expires = jiffies + dev_loss_tmo * HZ; 763 764 ql_dbg(ql_dbg_tgt, sess->vha, 0xe048, 765 "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)" 766 " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n", 767 sess->vha->vp_idx, sess->port_name, sess->loop_id, 768 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, 769 dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete, 770 sess->generation); 771 772 if (immediate) 773 mod_delayed_work(system_wq, &tgt->sess_del_work, 0); 774 else 775 schedule_delayed_work(&tgt->sess_del_work, 776 sess->expires - jiffies); 777 } 778 779 /* ha->tgt.sess_lock supposed to be held on entry */ 780 static void qlt_clear_tgt_db(struct qla_tgt *tgt) 781 { 782 struct qla_tgt_sess *sess; 783 784 list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) 785 qlt_schedule_sess_for_deletion(sess, true); 786 787 /* At this point tgt could be already dead */ 788 } 789 790 static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, 791 uint16_t *loop_id) 792 { 793 struct qla_hw_data *ha = vha->hw; 794 dma_addr_t gid_list_dma; 795 struct gid_list_info *gid_list; 796 char *id_iter; 797 int res, rc, i; 798 uint16_t entries; 799 800 gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 801 &gid_list_dma, GFP_KERNEL); 802 if (!gid_list) { 803 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, 804 "qla_target(%d): DMA Alloc failed of %u\n", 805 vha->vp_idx, qla2x00_gid_list_size(ha)); 806 return -ENOMEM; 807 } 808 809 /* Get list of logged in devices */ 810 rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries); 811 if (rc != QLA_SUCCESS) { 812 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, 813 "qla_target(%d): get_id_list() failed: %x\n", 814 vha->vp_idx, rc); 815 res = -EBUSY; 816 goto out_free_id_list; 817 } 818 819 id_iter = (char *)gid_list; 820 res = -ENOENT; 821 for (i = 0; i < entries; i++) { 822 struct gid_list_info *gid = (struct gid_list_info *)id_iter; 823 if ((gid->al_pa == s_id[2]) && 824 (gid->area == s_id[1]) && 825 (gid->domain == s_id[0])) { 826 *loop_id = le16_to_cpu(gid->loop_id); 827 res = 0; 828 break; 829 } 830 id_iter += ha->gid_list_info_size; 831 } 832 833 out_free_id_list: 834 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 835 gid_list, gid_list_dma); 836 return res; 837 } 838 839 /* ha->tgt.sess_lock supposed to be held on entry */ 840 static void qlt_undelete_sess(struct qla_tgt_sess *sess) 841 { 842 BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING); 843 844 list_del_init(&sess->del_list_entry); 845 sess->deleted = 0; 846 } 847 848 static void qlt_del_sess_work_fn(struct delayed_work *work) 849 { 850 struct qla_tgt *tgt = container_of(work, struct qla_tgt, 851 sess_del_work); 852 struct scsi_qla_host *vha = tgt->vha; 853 struct qla_hw_data *ha = vha->hw; 854 struct qla_tgt_sess *sess; 855 unsigned long flags, elapsed; 856 857 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 858 while (!list_empty(&tgt->del_sess_list)) { 859 sess = list_entry(tgt->del_sess_list.next, typeof(*sess), 860 del_list_entry); 861 elapsed = jiffies; 862 if (time_after_eq(elapsed, sess->expires)) { 863 /* No turning back */ 864 list_del_init(&sess->del_list_entry); 865 sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; 866 867 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, 868 "Timeout: sess %p about to be deleted\n", 869 sess); 870 if (sess->se_sess) 871 ha->tgt.tgt_ops->shutdown_sess(sess); 872 qlt_put_sess(sess); 873 } else { 874 schedule_delayed_work(&tgt->sess_del_work, 875 sess->expires - elapsed); 876 break; 877 } 878 } 879 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 880 } 881 882 /* 883 * Adds an extra ref to allow to drop hw lock after adding sess to the list. 884 * Caller must put it. 885 */ 886 static struct qla_tgt_sess *qlt_create_sess( 887 struct scsi_qla_host *vha, 888 fc_port_t *fcport, 889 bool local) 890 { 891 struct qla_hw_data *ha = vha->hw; 892 struct qla_tgt_sess *sess; 893 unsigned long flags; 894 895 /* Check to avoid double sessions */ 896 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 897 list_for_each_entry(sess, &vha->vha_tgt.qla_tgt->sess_list, 898 sess_list_entry) { 899 if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) { 900 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005, 901 "Double sess %p found (s_id %x:%x:%x, " 902 "loop_id %d), updating to d_id %x:%x:%x, " 903 "loop_id %d", sess, sess->s_id.b.domain, 904 sess->s_id.b.al_pa, sess->s_id.b.area, 905 sess->loop_id, fcport->d_id.b.domain, 906 fcport->d_id.b.al_pa, fcport->d_id.b.area, 907 fcport->loop_id); 908 909 /* Cannot undelete at this point */ 910 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 911 spin_unlock_irqrestore(&ha->tgt.sess_lock, 912 flags); 913 return NULL; 914 } 915 916 if (sess->deleted) 917 qlt_undelete_sess(sess); 918 919 if (!sess->se_sess) { 920 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 921 &sess->port_name[0], sess) < 0) { 922 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 923 return NULL; 924 } 925 } 926 927 kref_get(&sess->sess_kref); 928 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id, 929 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 930 931 if (sess->local && !local) 932 sess->local = 0; 933 934 qlt_do_generation_tick(vha, &sess->generation); 935 936 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 937 938 return sess; 939 } 940 } 941 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 942 943 sess = kzalloc(sizeof(*sess), GFP_KERNEL); 944 if (!sess) { 945 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a, 946 "qla_target(%u): session allocation failed, all commands " 947 "from port %8phC will be refused", vha->vp_idx, 948 fcport->port_name); 949 950 return NULL; 951 } 952 sess->tgt = vha->vha_tgt.qla_tgt; 953 sess->vha = vha; 954 sess->s_id = fcport->d_id; 955 sess->loop_id = fcport->loop_id; 956 sess->local = local; 957 kref_init(&sess->sess_kref); 958 INIT_LIST_HEAD(&sess->del_list_entry); 959 960 /* Under normal circumstances we want to logout from firmware when 961 * session eventually ends and release corresponding nport handle. 962 * In the exception cases (e.g. when new PLOGI is waiting) corresponding 963 * code will adjust these flags as necessary. */ 964 sess->logout_on_delete = 1; 965 sess->keep_nport_handle = 0; 966 967 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, 968 "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n", 969 sess, vha->vha_tgt.qla_tgt); 970 971 sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED); 972 BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name)); 973 memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name)); 974 975 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 976 list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list); 977 vha->vha_tgt.qla_tgt->sess_count++; 978 qlt_do_generation_tick(vha, &sess->generation); 979 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 980 981 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, 982 "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " 983 "s_id %x:%x:%x, confirmed completion %ssupported) added\n", 984 vha->vp_idx, local ? "local " : "", fcport->port_name, 985 fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area, 986 sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); 987 988 /* 989 * Determine if this fc_port->port_name is allowed to access 990 * target mode using explict NodeACLs+MappedLUNs, or using 991 * TPG demo mode. If this is successful a target mode FC nexus 992 * is created. 993 */ 994 if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, 995 &fcport->port_name[0], sess) < 0) { 996 return NULL; 997 } else { 998 /* 999 * Take an extra reference to ->sess_kref here to handle qla_tgt_sess 1000 * access across ->tgt.sess_lock reaquire. 1001 */ 1002 kref_get(&sess->sess_kref); 1003 } 1004 1005 return sess; 1006 } 1007 1008 /* 1009 * Called from qla2x00_reg_remote_port() 1010 */ 1011 void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) 1012 { 1013 struct qla_hw_data *ha = vha->hw; 1014 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1015 struct qla_tgt_sess *sess; 1016 unsigned long flags; 1017 1018 if (!vha->hw->tgt.tgt_ops) 1019 return; 1020 1021 if (!tgt || (fcport->port_type != FCT_INITIATOR)) 1022 return; 1023 1024 if (qla_ini_mode_enabled(vha)) 1025 return; 1026 1027 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1028 if (tgt->tgt_stop) { 1029 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1030 return; 1031 } 1032 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); 1033 if (!sess) { 1034 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1035 1036 mutex_lock(&vha->vha_tgt.tgt_mutex); 1037 sess = qlt_create_sess(vha, fcport, false); 1038 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1039 1040 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1041 } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1042 /* Point of no return */ 1043 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1044 return; 1045 } else { 1046 kref_get(&sess->sess_kref); 1047 1048 if (sess->deleted) { 1049 qlt_undelete_sess(sess); 1050 1051 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, 1052 "qla_target(%u): %ssession for port %8phC " 1053 "(loop ID %d) reappeared\n", vha->vp_idx, 1054 sess->local ? "local " : "", sess->port_name, 1055 sess->loop_id); 1056 1057 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, 1058 "Reappeared sess %p\n", sess); 1059 } 1060 ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id, 1061 (fcport->flags & FCF_CONF_COMP_SUPPORTED)); 1062 } 1063 1064 if (sess && sess->local) { 1065 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, 1066 "qla_target(%u): local session for " 1067 "port %8phC (loop ID %d) became global\n", vha->vp_idx, 1068 fcport->port_name, sess->loop_id); 1069 sess->local = 0; 1070 } 1071 qlt_put_sess(sess); 1072 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1073 } 1074 1075 /* 1076 * max_gen - specifies maximum session generation 1077 * at which this deletion requestion is still valid 1078 */ 1079 void 1080 qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) 1081 { 1082 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 1083 struct qla_tgt_sess *sess; 1084 unsigned long flags; 1085 1086 if (!vha->hw->tgt.tgt_ops) 1087 return; 1088 1089 if (!tgt) 1090 return; 1091 1092 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 1093 if (tgt->tgt_stop) { 1094 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1095 return; 1096 } 1097 sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); 1098 if (!sess) { 1099 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1100 return; 1101 } 1102 1103 if (max_gen - sess->generation < 0) { 1104 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1105 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, 1106 "Ignoring stale deletion request for se_sess %p / sess %p" 1107 " for port %8phC, req_gen %d, sess_gen %d\n", 1108 sess->se_sess, sess, sess->port_name, max_gen, 1109 sess->generation); 1110 return; 1111 } 1112 1113 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); 1114 1115 sess->local = 1; 1116 qlt_schedule_sess_for_deletion(sess, false); 1117 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 1118 } 1119 1120 static inline int test_tgt_sess_count(struct qla_tgt *tgt) 1121 { 1122 struct qla_hw_data *ha = tgt->ha; 1123 unsigned long flags; 1124 int res; 1125 /* 1126 * We need to protect against race, when tgt is freed before or 1127 * inside wake_up() 1128 */ 1129 spin_lock_irqsave(&ha->hardware_lock, flags); 1130 ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, 1131 "tgt %p, empty(sess_list)=%d sess_count=%d\n", 1132 tgt, list_empty(&tgt->sess_list), tgt->sess_count); 1133 res = (tgt->sess_count == 0); 1134 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1135 1136 return res; 1137 } 1138 1139 /* Called by tcm_qla2xxx configfs code */ 1140 int qlt_stop_phase1(struct qla_tgt *tgt) 1141 { 1142 struct scsi_qla_host *vha = tgt->vha; 1143 struct qla_hw_data *ha = tgt->ha; 1144 unsigned long flags; 1145 1146 mutex_lock(&qla_tgt_mutex); 1147 if (!vha->fc_vport) { 1148 struct Scsi_Host *sh = vha->host; 1149 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 1150 bool npiv_vports; 1151 1152 spin_lock_irqsave(sh->host_lock, flags); 1153 npiv_vports = (fc_host->npiv_vports_inuse); 1154 spin_unlock_irqrestore(sh->host_lock, flags); 1155 1156 if (npiv_vports) { 1157 mutex_unlock(&qla_tgt_mutex); 1158 return -EPERM; 1159 } 1160 } 1161 if (tgt->tgt_stop || tgt->tgt_stopped) { 1162 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, 1163 "Already in tgt->tgt_stop or tgt_stopped state\n"); 1164 mutex_unlock(&qla_tgt_mutex); 1165 return -EPERM; 1166 } 1167 1168 ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", 1169 vha->host_no, vha); 1170 /* 1171 * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. 1172 * Lock is needed, because we still can get an incoming packet. 1173 */ 1174 mutex_lock(&vha->vha_tgt.tgt_mutex); 1175 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1176 tgt->tgt_stop = 1; 1177 qlt_clear_tgt_db(tgt); 1178 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1179 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1180 mutex_unlock(&qla_tgt_mutex); 1181 1182 flush_delayed_work(&tgt->sess_del_work); 1183 1184 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, 1185 "Waiting for sess works (tgt %p)", tgt); 1186 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1187 while (!list_empty(&tgt->sess_works_list)) { 1188 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1189 flush_scheduled_work(); 1190 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1191 } 1192 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1193 1194 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, 1195 "Waiting for tgt %p: list_empty(sess_list)=%d " 1196 "sess_count=%d\n", tgt, list_empty(&tgt->sess_list), 1197 tgt->sess_count); 1198 1199 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1200 1201 /* Big hammer */ 1202 if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha)) 1203 qlt_disable_vha(vha); 1204 1205 /* Wait for sessions to clear out (just in case) */ 1206 wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); 1207 return 0; 1208 } 1209 EXPORT_SYMBOL(qlt_stop_phase1); 1210 1211 /* Called by tcm_qla2xxx configfs code */ 1212 void qlt_stop_phase2(struct qla_tgt *tgt) 1213 { 1214 struct qla_hw_data *ha = tgt->ha; 1215 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1216 unsigned long flags; 1217 1218 if (tgt->tgt_stopped) { 1219 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, 1220 "Already in tgt->tgt_stopped state\n"); 1221 dump_stack(); 1222 return; 1223 } 1224 1225 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, 1226 "Waiting for %d IRQ commands to complete (tgt %p)", 1227 tgt->irq_cmd_count, tgt); 1228 1229 mutex_lock(&vha->vha_tgt.tgt_mutex); 1230 spin_lock_irqsave(&ha->hardware_lock, flags); 1231 while ((tgt->irq_cmd_count != 0) || (tgt->atio_irq_cmd_count != 0)) { 1232 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1233 udelay(2); 1234 spin_lock_irqsave(&ha->hardware_lock, flags); 1235 } 1236 tgt->tgt_stop = 0; 1237 tgt->tgt_stopped = 1; 1238 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1239 mutex_unlock(&vha->vha_tgt.tgt_mutex); 1240 1241 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished", 1242 tgt); 1243 } 1244 EXPORT_SYMBOL(qlt_stop_phase2); 1245 1246 /* Called from qlt_remove_target() -> qla2x00_remove_one() */ 1247 static void qlt_release(struct qla_tgt *tgt) 1248 { 1249 scsi_qla_host_t *vha = tgt->vha; 1250 1251 if ((vha->vha_tgt.qla_tgt != NULL) && !tgt->tgt_stopped) 1252 qlt_stop_phase2(tgt); 1253 1254 vha->vha_tgt.qla_tgt = NULL; 1255 1256 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, 1257 "Release of tgt %p finished\n", tgt); 1258 1259 kfree(tgt); 1260 } 1261 1262 /* ha->hardware_lock supposed to be held on entry */ 1263 static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, 1264 const void *param, unsigned int param_size) 1265 { 1266 struct qla_tgt_sess_work_param *prm; 1267 unsigned long flags; 1268 1269 prm = kzalloc(sizeof(*prm), GFP_ATOMIC); 1270 if (!prm) { 1271 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, 1272 "qla_target(%d): Unable to create session " 1273 "work, command will be refused", 0); 1274 return -ENOMEM; 1275 } 1276 1277 ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, 1278 "Scheduling work (type %d, prm %p)" 1279 " to find session for param %p (size %d, tgt %p)\n", 1280 type, prm, param, param_size, tgt); 1281 1282 prm->type = type; 1283 memcpy(&prm->tm_iocb, param, param_size); 1284 1285 spin_lock_irqsave(&tgt->sess_work_lock, flags); 1286 list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); 1287 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 1288 1289 schedule_work(&tgt->sess_work); 1290 1291 return 0; 1292 } 1293 1294 /* 1295 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1296 */ 1297 static void qlt_send_notify_ack(struct scsi_qla_host *vha, 1298 struct imm_ntfy_from_isp *ntfy, 1299 uint32_t add_flags, uint16_t resp_code, int resp_code_valid, 1300 uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) 1301 { 1302 struct qla_hw_data *ha = vha->hw; 1303 request_t *pkt; 1304 struct nack_to_isp *nack; 1305 1306 ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); 1307 1308 /* Send marker if required */ 1309 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1310 return; 1311 1312 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 1313 if (!pkt) { 1314 ql_dbg(ql_dbg_tgt, vha, 0xe049, 1315 "qla_target(%d): %s failed: unable to allocate " 1316 "request packet\n", vha->vp_idx, __func__); 1317 return; 1318 } 1319 1320 if (vha->vha_tgt.qla_tgt != NULL) 1321 vha->vha_tgt.qla_tgt->notify_ack_expected++; 1322 1323 pkt->entry_type = NOTIFY_ACK_TYPE; 1324 pkt->entry_count = 1; 1325 1326 nack = (struct nack_to_isp *)pkt; 1327 nack->ox_id = ntfy->ox_id; 1328 1329 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 1330 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 1331 nack->u.isp24.flags = ntfy->u.isp24.flags & 1332 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 1333 } 1334 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 1335 nack->u.isp24.status = ntfy->u.isp24.status; 1336 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 1337 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 1338 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 1339 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 1340 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 1341 nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); 1342 nack->u.isp24.srr_reject_code = srr_reject_code; 1343 nack->u.isp24.srr_reject_code_expl = srr_explan; 1344 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 1345 1346 ql_dbg(ql_dbg_tgt, vha, 0xe005, 1347 "qla_target(%d): Sending 24xx Notify Ack %d\n", 1348 vha->vp_idx, nack->u.isp24.status); 1349 1350 /* Memory Barrier */ 1351 wmb(); 1352 qla2x00_start_iocbs(vha, vha->req); 1353 } 1354 1355 /* 1356 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1357 */ 1358 static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, 1359 struct abts_recv_from_24xx *abts, uint32_t status, 1360 bool ids_reversed) 1361 { 1362 struct qla_hw_data *ha = vha->hw; 1363 struct abts_resp_to_24xx *resp; 1364 uint32_t f_ctl; 1365 uint8_t *p; 1366 1367 ql_dbg(ql_dbg_tgt, vha, 0xe006, 1368 "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", 1369 ha, abts, status); 1370 1371 /* Send marker if required */ 1372 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1373 return; 1374 1375 resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1376 if (!resp) { 1377 ql_dbg(ql_dbg_tgt, vha, 0xe04a, 1378 "qla_target(%d): %s failed: unable to allocate " 1379 "request packet", vha->vp_idx, __func__); 1380 return; 1381 } 1382 1383 resp->entry_type = ABTS_RESP_24XX; 1384 resp->entry_count = 1; 1385 resp->nport_handle = abts->nport_handle; 1386 resp->vp_index = vha->vp_idx; 1387 resp->sof_type = abts->sof_type; 1388 resp->exchange_address = abts->exchange_address; 1389 resp->fcp_hdr_le = abts->fcp_hdr_le; 1390 f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | 1391 F_CTL_LAST_SEQ | F_CTL_END_SEQ | 1392 F_CTL_SEQ_INITIATIVE); 1393 p = (uint8_t *)&f_ctl; 1394 resp->fcp_hdr_le.f_ctl[0] = *p++; 1395 resp->fcp_hdr_le.f_ctl[1] = *p++; 1396 resp->fcp_hdr_le.f_ctl[2] = *p; 1397 if (ids_reversed) { 1398 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; 1399 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; 1400 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; 1401 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; 1402 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; 1403 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; 1404 } else { 1405 resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; 1406 resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; 1407 resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; 1408 resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; 1409 resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; 1410 resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; 1411 } 1412 resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; 1413 if (status == FCP_TMF_CMPL) { 1414 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; 1415 resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; 1416 resp->payload.ba_acct.low_seq_cnt = 0x0000; 1417 resp->payload.ba_acct.high_seq_cnt = 0xFFFF; 1418 resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; 1419 resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; 1420 } else { 1421 resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; 1422 resp->payload.ba_rjt.reason_code = 1423 BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; 1424 /* Other bytes are zero */ 1425 } 1426 1427 vha->vha_tgt.qla_tgt->abts_resp_expected++; 1428 1429 /* Memory Barrier */ 1430 wmb(); 1431 qla2x00_start_iocbs(vha, vha->req); 1432 } 1433 1434 /* 1435 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1436 */ 1437 static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, 1438 struct abts_resp_from_24xx_fw *entry) 1439 { 1440 struct ctio7_to_24xx *ctio; 1441 1442 ql_dbg(ql_dbg_tgt, vha, 0xe007, 1443 "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); 1444 /* Send marker if required */ 1445 if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) 1446 return; 1447 1448 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL); 1449 if (ctio == NULL) { 1450 ql_dbg(ql_dbg_tgt, vha, 0xe04b, 1451 "qla_target(%d): %s failed: unable to allocate " 1452 "request packet\n", vha->vp_idx, __func__); 1453 return; 1454 } 1455 1456 /* 1457 * We've got on entrance firmware's response on by us generated 1458 * ABTS response. So, in it ID fields are reversed. 1459 */ 1460 1461 ctio->entry_type = CTIO_TYPE7; 1462 ctio->entry_count = 1; 1463 ctio->nport_handle = entry->nport_handle; 1464 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1465 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1466 ctio->vp_index = vha->vp_idx; 1467 ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; 1468 ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; 1469 ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; 1470 ctio->exchange_addr = entry->exchange_addr_to_abort; 1471 ctio->u.status1.flags = cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 1472 CTIO7_FLAGS_TERMINATE); 1473 ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); 1474 1475 /* Memory Barrier */ 1476 wmb(); 1477 qla2x00_start_iocbs(vha, vha->req); 1478 1479 qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, 1480 FCP_TMF_CMPL, true); 1481 } 1482 1483 static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag) 1484 { 1485 struct qla_tgt_sess_op *op; 1486 struct qla_tgt_cmd *cmd; 1487 1488 spin_lock(&vha->cmd_list_lock); 1489 1490 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1491 if (tag == op->atio.u.isp24.exchange_addr) { 1492 op->aborted = true; 1493 spin_unlock(&vha->cmd_list_lock); 1494 return 1; 1495 } 1496 } 1497 1498 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1499 if (tag == cmd->atio.u.isp24.exchange_addr) { 1500 cmd->aborted = 1; 1501 spin_unlock(&vha->cmd_list_lock); 1502 return 1; 1503 } 1504 } 1505 1506 spin_unlock(&vha->cmd_list_lock); 1507 return 0; 1508 } 1509 1510 /* drop cmds for the given lun 1511 * XXX only looks for cmds on the port through which lun reset was recieved 1512 * XXX does not go through the list of other port (which may have cmds 1513 * for the same lun) 1514 */ 1515 static void abort_cmds_for_lun(struct scsi_qla_host *vha, 1516 uint32_t lun, uint8_t *s_id) 1517 { 1518 struct qla_tgt_sess_op *op; 1519 struct qla_tgt_cmd *cmd; 1520 uint32_t key; 1521 1522 key = sid_to_key(s_id); 1523 spin_lock(&vha->cmd_list_lock); 1524 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 1525 uint32_t op_key; 1526 uint32_t op_lun; 1527 1528 op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 1529 op_lun = scsilun_to_int( 1530 (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); 1531 if (op_key == key && op_lun == lun) 1532 op->aborted = true; 1533 } 1534 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 1535 uint32_t cmd_key; 1536 uint32_t cmd_lun; 1537 1538 cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 1539 cmd_lun = scsilun_to_int( 1540 (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); 1541 if (cmd_key == key && cmd_lun == lun) 1542 cmd->aborted = 1; 1543 } 1544 spin_unlock(&vha->cmd_list_lock); 1545 } 1546 1547 /* ha->hardware_lock supposed to be held on entry */ 1548 static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1549 struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess) 1550 { 1551 struct qla_hw_data *ha = vha->hw; 1552 struct se_session *se_sess = sess->se_sess; 1553 struct qla_tgt_mgmt_cmd *mcmd; 1554 struct se_cmd *se_cmd; 1555 u32 lun = 0; 1556 int rc; 1557 bool found_lun = false; 1558 1559 spin_lock(&se_sess->sess_cmd_lock); 1560 list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) { 1561 struct qla_tgt_cmd *cmd = 1562 container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 1563 if (se_cmd->tag == abts->exchange_addr_to_abort) { 1564 lun = cmd->unpacked_lun; 1565 found_lun = true; 1566 break; 1567 } 1568 } 1569 spin_unlock(&se_sess->sess_cmd_lock); 1570 1571 /* cmd not in LIO lists, look in qla list */ 1572 if (!found_lun) { 1573 if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) { 1574 /* send TASK_ABORT response immediately */ 1575 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false); 1576 return 0; 1577 } else { 1578 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081, 1579 "unable to find cmd in driver or LIO for tag 0x%x\n", 1580 abts->exchange_addr_to_abort); 1581 return -ENOENT; 1582 } 1583 } 1584 1585 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, 1586 "qla_target(%d): task abort (tag=%d)\n", 1587 vha->vp_idx, abts->exchange_addr_to_abort); 1588 1589 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 1590 if (mcmd == NULL) { 1591 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, 1592 "qla_target(%d): %s: Allocation of ABORT cmd failed", 1593 vha->vp_idx, __func__); 1594 return -ENOMEM; 1595 } 1596 memset(mcmd, 0, sizeof(*mcmd)); 1597 1598 mcmd->sess = sess; 1599 memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); 1600 mcmd->reset_count = vha->hw->chip_reset; 1601 1602 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK, 1603 abts->exchange_addr_to_abort); 1604 if (rc != 0) { 1605 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, 1606 "qla_target(%d): tgt_ops->handle_tmr()" 1607 " failed: %d", vha->vp_idx, rc); 1608 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1609 return -EFAULT; 1610 } 1611 1612 return 0; 1613 } 1614 1615 /* 1616 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1617 */ 1618 static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, 1619 struct abts_recv_from_24xx *abts) 1620 { 1621 struct qla_hw_data *ha = vha->hw; 1622 struct qla_tgt_sess *sess; 1623 uint32_t tag = abts->exchange_addr_to_abort; 1624 uint8_t s_id[3]; 1625 int rc; 1626 unsigned long flags; 1627 1628 if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { 1629 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, 1630 "qla_target(%d): ABTS: Abort Sequence not " 1631 "supported\n", vha->vp_idx); 1632 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1633 return; 1634 } 1635 1636 if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { 1637 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, 1638 "qla_target(%d): ABTS: Unknown Exchange " 1639 "Address received\n", vha->vp_idx); 1640 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1641 return; 1642 } 1643 1644 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, 1645 "qla_target(%d): task abort (s_id=%x:%x:%x, " 1646 "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], 1647 abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, 1648 le32_to_cpu(abts->fcp_hdr_le.parameter)); 1649 1650 s_id[0] = abts->fcp_hdr_le.s_id[2]; 1651 s_id[1] = abts->fcp_hdr_le.s_id[1]; 1652 s_id[2] = abts->fcp_hdr_le.s_id[0]; 1653 1654 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1655 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 1656 if (!sess) { 1657 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, 1658 "qla_target(%d): task abort for non-existant session\n", 1659 vha->vp_idx); 1660 rc = qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 1661 QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); 1662 1663 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1664 1665 if (rc != 0) { 1666 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, 1667 false); 1668 } 1669 return; 1670 } 1671 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1672 1673 1674 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 1675 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1676 return; 1677 } 1678 1679 rc = __qlt_24xx_handle_abts(vha, abts, sess); 1680 if (rc != 0) { 1681 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, 1682 "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", 1683 vha->vp_idx, rc); 1684 qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); 1685 return; 1686 } 1687 } 1688 1689 /* 1690 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1691 */ 1692 static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, 1693 struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) 1694 { 1695 struct atio_from_isp *atio = &mcmd->orig_iocb.atio; 1696 struct ctio7_to_24xx *ctio; 1697 uint16_t temp; 1698 1699 ql_dbg(ql_dbg_tgt, ha, 0xe008, 1700 "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", 1701 ha, atio, resp_code); 1702 1703 /* Send marker if required */ 1704 if (qlt_issue_marker(ha, 1) != QLA_SUCCESS) 1705 return; 1706 1707 ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL); 1708 if (ctio == NULL) { 1709 ql_dbg(ql_dbg_tgt, ha, 0xe04c, 1710 "qla_target(%d): %s failed: unable to allocate " 1711 "request packet\n", ha->vp_idx, __func__); 1712 return; 1713 } 1714 1715 ctio->entry_type = CTIO_TYPE7; 1716 ctio->entry_count = 1; 1717 ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 1718 ctio->nport_handle = mcmd->sess->loop_id; 1719 ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1720 ctio->vp_index = ha->vp_idx; 1721 ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 1722 ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 1723 ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 1724 ctio->exchange_addr = atio->u.isp24.exchange_addr; 1725 ctio->u.status1.flags = (atio->u.isp24.attr << 9) | 1726 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS); 1727 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 1728 ctio->u.status1.ox_id = cpu_to_le16(temp); 1729 ctio->u.status1.scsi_status = 1730 cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); 1731 ctio->u.status1.response_len = cpu_to_le16(8); 1732 ctio->u.status1.sense_data[0] = resp_code; 1733 1734 /* Memory Barrier */ 1735 wmb(); 1736 qla2x00_start_iocbs(ha, ha->req); 1737 } 1738 1739 void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 1740 { 1741 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 1742 } 1743 EXPORT_SYMBOL(qlt_free_mcmd); 1744 1745 /* callback from target fabric module code */ 1746 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) 1747 { 1748 struct scsi_qla_host *vha = mcmd->sess->vha; 1749 struct qla_hw_data *ha = vha->hw; 1750 unsigned long flags; 1751 1752 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, 1753 "TM response mcmd (%p) status %#x state %#x", 1754 mcmd, mcmd->fc_tm_rsp, mcmd->flags); 1755 1756 spin_lock_irqsave(&ha->hardware_lock, flags); 1757 1758 if (!vha->flags.online || mcmd->reset_count != ha->chip_reset) { 1759 /* 1760 * Either the port is not online or this request was from 1761 * previous life, just abort the processing. 1762 */ 1763 ql_dbg(ql_dbg_async, vha, 0xe100, 1764 "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", 1765 vha->flags.online, qla2x00_reset_active(vha), 1766 mcmd->reset_count, ha->chip_reset); 1767 ha->tgt.tgt_ops->free_mcmd(mcmd); 1768 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1769 return; 1770 } 1771 1772 if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) 1773 qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, 1774 0, 0, 0, 0, 0, 0); 1775 else { 1776 if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) 1777 qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, 1778 mcmd->fc_tm_rsp, false); 1779 else 1780 qlt_24xx_send_task_mgmt_ctio(vha, mcmd, 1781 mcmd->fc_tm_rsp); 1782 } 1783 /* 1784 * Make the callback for ->free_mcmd() to queue_work() and invoke 1785 * target_put_sess_cmd() to drop cmd_kref to 1. The final 1786 * target_put_sess_cmd() call will be made from TFO->check_stop_free() 1787 * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd 1788 * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> 1789 * qlt_xmit_tm_rsp() returns here.. 1790 */ 1791 ha->tgt.tgt_ops->free_mcmd(mcmd); 1792 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1793 } 1794 EXPORT_SYMBOL(qlt_xmit_tm_rsp); 1795 1796 /* No locks */ 1797 static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) 1798 { 1799 struct qla_tgt_cmd *cmd = prm->cmd; 1800 1801 BUG_ON(cmd->sg_cnt == 0); 1802 1803 prm->sg = (struct scatterlist *)cmd->sg; 1804 prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg, 1805 cmd->sg_cnt, cmd->dma_data_direction); 1806 if (unlikely(prm->seg_cnt == 0)) 1807 goto out_err; 1808 1809 prm->cmd->sg_mapped = 1; 1810 1811 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { 1812 /* 1813 * If greater than four sg entries then we need to allocate 1814 * the continuation entries 1815 */ 1816 if (prm->seg_cnt > prm->tgt->datasegs_per_cmd) 1817 prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - 1818 prm->tgt->datasegs_per_cmd, 1819 prm->tgt->datasegs_per_cont); 1820 } else { 1821 /* DIF */ 1822 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 1823 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 1824 prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); 1825 prm->tot_dsds = prm->seg_cnt; 1826 } else 1827 prm->tot_dsds = prm->seg_cnt; 1828 1829 if (cmd->prot_sg_cnt) { 1830 prm->prot_sg = cmd->prot_sg; 1831 prm->prot_seg_cnt = pci_map_sg(prm->tgt->ha->pdev, 1832 cmd->prot_sg, cmd->prot_sg_cnt, 1833 cmd->dma_data_direction); 1834 if (unlikely(prm->prot_seg_cnt == 0)) 1835 goto out_err; 1836 1837 if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || 1838 (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { 1839 /* Dif Bundling not support here */ 1840 prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, 1841 cmd->blk_sz); 1842 prm->tot_dsds += prm->prot_seg_cnt; 1843 } else 1844 prm->tot_dsds += prm->prot_seg_cnt; 1845 } 1846 } 1847 1848 return 0; 1849 1850 out_err: 1851 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, 1852 "qla_target(%d): PCI mapping failed: sg_cnt=%d", 1853 0, prm->cmd->sg_cnt); 1854 return -1; 1855 } 1856 1857 static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 1858 { 1859 struct qla_hw_data *ha = vha->hw; 1860 1861 if (!cmd->sg_mapped) 1862 return; 1863 1864 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 1865 cmd->sg_mapped = 0; 1866 1867 if (cmd->prot_sg_cnt) 1868 pci_unmap_sg(ha->pdev, cmd->prot_sg, cmd->prot_sg_cnt, 1869 cmd->dma_data_direction); 1870 1871 if (cmd->ctx_dsd_alloced) 1872 qla2x00_clean_dsd_pool(ha, NULL, cmd); 1873 1874 if (cmd->ctx) 1875 dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); 1876 } 1877 1878 static int qlt_check_reserve_free_req(struct scsi_qla_host *vha, 1879 uint32_t req_cnt) 1880 { 1881 uint32_t cnt, cnt_in; 1882 1883 if (vha->req->cnt < (req_cnt + 2)) { 1884 cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out); 1885 cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in); 1886 1887 if (vha->req->ring_index < cnt) 1888 vha->req->cnt = cnt - vha->req->ring_index; 1889 else 1890 vha->req->cnt = vha->req->length - 1891 (vha->req->ring_index - cnt); 1892 1893 if (unlikely(vha->req->cnt < (req_cnt + 2))) { 1894 ql_dbg(ql_dbg_io, vha, 0x305a, 1895 "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", 1896 vha->vp_idx, vha->req->ring_index, 1897 vha->req->cnt, req_cnt, cnt, cnt_in, 1898 vha->req->length); 1899 return -EAGAIN; 1900 } 1901 } 1902 1903 vha->req->cnt -= req_cnt; 1904 1905 return 0; 1906 } 1907 1908 /* 1909 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 1910 */ 1911 static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha) 1912 { 1913 /* Adjust ring index. */ 1914 vha->req->ring_index++; 1915 if (vha->req->ring_index == vha->req->length) { 1916 vha->req->ring_index = 0; 1917 vha->req->ring_ptr = vha->req->ring; 1918 } else { 1919 vha->req->ring_ptr++; 1920 } 1921 return (cont_entry_t *)vha->req->ring_ptr; 1922 } 1923 1924 /* ha->hardware_lock supposed to be held on entry */ 1925 static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha) 1926 { 1927 struct qla_hw_data *ha = vha->hw; 1928 uint32_t h; 1929 1930 h = ha->tgt.current_handle; 1931 /* always increment cmd handle */ 1932 do { 1933 ++h; 1934 if (h > DEFAULT_OUTSTANDING_COMMANDS) 1935 h = 1; /* 0 is QLA_TGT_NULL_HANDLE */ 1936 if (h == ha->tgt.current_handle) { 1937 ql_dbg(ql_dbg_io, vha, 0x305b, 1938 "qla_target(%d): Ran out of " 1939 "empty cmd slots in ha %p\n", vha->vp_idx, ha); 1940 h = QLA_TGT_NULL_HANDLE; 1941 break; 1942 } 1943 } while ((h == QLA_TGT_NULL_HANDLE) || 1944 (h == QLA_TGT_SKIP_HANDLE) || 1945 (ha->tgt.cmds[h-1] != NULL)); 1946 1947 if (h != QLA_TGT_NULL_HANDLE) 1948 ha->tgt.current_handle = h; 1949 1950 return h; 1951 } 1952 1953 /* ha->hardware_lock supposed to be held on entry */ 1954 static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, 1955 struct scsi_qla_host *vha) 1956 { 1957 uint32_t h; 1958 struct ctio7_to_24xx *pkt; 1959 struct qla_hw_data *ha = vha->hw; 1960 struct atio_from_isp *atio = &prm->cmd->atio; 1961 uint16_t temp; 1962 1963 pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr; 1964 prm->pkt = pkt; 1965 memset(pkt, 0, sizeof(*pkt)); 1966 1967 pkt->entry_type = CTIO_TYPE7; 1968 pkt->entry_count = (uint8_t)prm->req_cnt; 1969 pkt->vp_index = vha->vp_idx; 1970 1971 h = qlt_make_handle(vha); 1972 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 1973 /* 1974 * CTIO type 7 from the firmware doesn't provide a way to 1975 * know the initiator's LOOP ID, hence we can't find 1976 * the session and, so, the command. 1977 */ 1978 return -EAGAIN; 1979 } else 1980 ha->tgt.cmds[h-1] = prm->cmd; 1981 1982 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 1983 pkt->nport_handle = prm->cmd->loop_id; 1984 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 1985 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 1986 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 1987 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 1988 pkt->exchange_addr = atio->u.isp24.exchange_addr; 1989 pkt->u.status0.flags |= (atio->u.isp24.attr << 9); 1990 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 1991 pkt->u.status0.ox_id = cpu_to_le16(temp); 1992 pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); 1993 1994 return 0; 1995 } 1996 1997 /* 1998 * ha->hardware_lock supposed to be held on entry. We have already made sure 1999 * that there is sufficient amount of request entries to not drop it. 2000 */ 2001 static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm, 2002 struct scsi_qla_host *vha) 2003 { 2004 int cnt; 2005 uint32_t *dword_ptr; 2006 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 2007 2008 /* Build continuation packets */ 2009 while (prm->seg_cnt > 0) { 2010 cont_a64_entry_t *cont_pkt64 = 2011 (cont_a64_entry_t *)qlt_get_req_pkt(vha); 2012 2013 /* 2014 * Make sure that from cont_pkt64 none of 2015 * 64-bit specific fields used for 32-bit 2016 * addressing. Cast to (cont_entry_t *) for 2017 * that. 2018 */ 2019 2020 memset(cont_pkt64, 0, sizeof(*cont_pkt64)); 2021 2022 cont_pkt64->entry_count = 1; 2023 cont_pkt64->sys_define = 0; 2024 2025 if (enable_64bit_addressing) { 2026 cont_pkt64->entry_type = CONTINUE_A64_TYPE; 2027 dword_ptr = 2028 (uint32_t *)&cont_pkt64->dseg_0_address; 2029 } else { 2030 cont_pkt64->entry_type = CONTINUE_TYPE; 2031 dword_ptr = 2032 (uint32_t *)&((cont_entry_t *) 2033 cont_pkt64)->dseg_0_address; 2034 } 2035 2036 /* Load continuation entry data segments */ 2037 for (cnt = 0; 2038 cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt; 2039 cnt++, prm->seg_cnt--) { 2040 *dword_ptr++ = 2041 cpu_to_le32(pci_dma_lo32 2042 (sg_dma_address(prm->sg))); 2043 if (enable_64bit_addressing) { 2044 *dword_ptr++ = 2045 cpu_to_le32(pci_dma_hi32 2046 (sg_dma_address 2047 (prm->sg))); 2048 } 2049 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2050 2051 prm->sg = sg_next(prm->sg); 2052 } 2053 } 2054 } 2055 2056 /* 2057 * ha->hardware_lock supposed to be held on entry. We have already made sure 2058 * that there is sufficient amount of request entries to not drop it. 2059 */ 2060 static void qlt_load_data_segments(struct qla_tgt_prm *prm, 2061 struct scsi_qla_host *vha) 2062 { 2063 int cnt; 2064 uint32_t *dword_ptr; 2065 int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; 2066 struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; 2067 2068 pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); 2069 2070 /* Setup packet address segment pointer */ 2071 dword_ptr = pkt24->u.status0.dseg_0_address; 2072 2073 /* Set total data segment count */ 2074 if (prm->seg_cnt) 2075 pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); 2076 2077 if (prm->seg_cnt == 0) { 2078 /* No data transfer */ 2079 *dword_ptr++ = 0; 2080 *dword_ptr = 0; 2081 return; 2082 } 2083 2084 /* If scatter gather */ 2085 2086 /* Load command entry data segments */ 2087 for (cnt = 0; 2088 (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt; 2089 cnt++, prm->seg_cnt--) { 2090 *dword_ptr++ = 2091 cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); 2092 if (enable_64bit_addressing) { 2093 *dword_ptr++ = 2094 cpu_to_le32(pci_dma_hi32( 2095 sg_dma_address(prm->sg))); 2096 } 2097 *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); 2098 2099 prm->sg = sg_next(prm->sg); 2100 } 2101 2102 qlt_load_cont_data_segments(prm, vha); 2103 } 2104 2105 static inline int qlt_has_data(struct qla_tgt_cmd *cmd) 2106 { 2107 return cmd->bufflen > 0; 2108 } 2109 2110 /* 2111 * Called without ha->hardware_lock held 2112 */ 2113 static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, 2114 struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, 2115 uint32_t *full_req_cnt) 2116 { 2117 struct qla_tgt *tgt = cmd->tgt; 2118 struct scsi_qla_host *vha = tgt->vha; 2119 struct qla_hw_data *ha = vha->hw; 2120 struct se_cmd *se_cmd = &cmd->se_cmd; 2121 2122 prm->cmd = cmd; 2123 prm->tgt = tgt; 2124 prm->rq_result = scsi_status; 2125 prm->sense_buffer = &cmd->sense_buffer[0]; 2126 prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; 2127 prm->sg = NULL; 2128 prm->seg_cnt = -1; 2129 prm->req_cnt = 1; 2130 prm->add_status_pkt = 0; 2131 2132 /* Send marker if required */ 2133 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 2134 return -EFAULT; 2135 2136 if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { 2137 if (qlt_pci_map_calc_cnt(prm) != 0) 2138 return -EAGAIN; 2139 } 2140 2141 *full_req_cnt = prm->req_cnt; 2142 2143 if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { 2144 prm->residual = se_cmd->residual_count; 2145 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c, 2146 "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2147 prm->residual, se_cmd->tag, 2148 se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, 2149 cmd->bufflen, prm->rq_result); 2150 prm->rq_result |= SS_RESIDUAL_UNDER; 2151 } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 2152 prm->residual = se_cmd->residual_count; 2153 ql_dbg(ql_dbg_io, vha, 0x305d, 2154 "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", 2155 prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? 2156 se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); 2157 prm->rq_result |= SS_RESIDUAL_OVER; 2158 } 2159 2160 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2161 /* 2162 * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be 2163 * ignored in *xmit_response() below 2164 */ 2165 if (qlt_has_data(cmd)) { 2166 if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || 2167 (IS_FWI2_CAPABLE(ha) && 2168 (prm->rq_result != 0))) { 2169 prm->add_status_pkt = 1; 2170 (*full_req_cnt)++; 2171 } 2172 } 2173 } 2174 2175 return 0; 2176 } 2177 2178 static inline int qlt_need_explicit_conf(struct qla_hw_data *ha, 2179 struct qla_tgt_cmd *cmd, int sending_sense) 2180 { 2181 if (ha->tgt.enable_class_2) 2182 return 0; 2183 2184 if (sending_sense) 2185 return cmd->conf_compl_supported; 2186 else 2187 return ha->tgt.enable_explicit_conf && 2188 cmd->conf_compl_supported; 2189 } 2190 2191 #ifdef CONFIG_QLA_TGT_DEBUG_SRR 2192 /* 2193 * Original taken from the XFS code 2194 */ 2195 static unsigned long qlt_srr_random(void) 2196 { 2197 static int Inited; 2198 static unsigned long RandomValue; 2199 static DEFINE_SPINLOCK(lock); 2200 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ 2201 register long rv; 2202 register long lo; 2203 register long hi; 2204 unsigned long flags; 2205 2206 spin_lock_irqsave(&lock, flags); 2207 if (!Inited) { 2208 RandomValue = jiffies; 2209 Inited = 1; 2210 } 2211 rv = RandomValue; 2212 hi = rv / 127773; 2213 lo = rv % 127773; 2214 rv = 16807 * lo - 2836 * hi; 2215 if (rv <= 0) 2216 rv += 2147483647; 2217 RandomValue = rv; 2218 spin_unlock_irqrestore(&lock, flags); 2219 return rv; 2220 } 2221 2222 static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) 2223 { 2224 #if 0 /* This is not a real status packets lost, so it won't lead to SRR */ 2225 if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200) 2226 == 50) { 2227 *xmit_type &= ~QLA_TGT_XMIT_STATUS; 2228 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015, 2229 "Dropping cmd %p (tag %d) status", cmd, se_cmd->tag); 2230 } 2231 #endif 2232 /* 2233 * It's currently not possible to simulate SRRs for FCP_WRITE without 2234 * a physical link layer failure, so don't even try here.. 2235 */ 2236 if (cmd->dma_data_direction != DMA_FROM_DEVICE) 2237 return; 2238 2239 if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) && 2240 ((qlt_srr_random() % 100) == 20)) { 2241 int i, leave = 0; 2242 unsigned int tot_len = 0; 2243 2244 while (leave == 0) 2245 leave = qlt_srr_random() % cmd->sg_cnt; 2246 2247 for (i = 0; i < leave; i++) 2248 tot_len += cmd->sg[i].length; 2249 2250 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016, 2251 "Cutting cmd %p (tag %d) buffer" 2252 " tail to len %d, sg_cnt %d (cmd->bufflen %d," 2253 " cmd->sg_cnt %d)", cmd, se_cmd->tag, tot_len, leave, 2254 cmd->bufflen, cmd->sg_cnt); 2255 2256 cmd->bufflen = tot_len; 2257 cmd->sg_cnt = leave; 2258 } 2259 2260 if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) { 2261 unsigned int offset = qlt_srr_random() % cmd->bufflen; 2262 2263 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017, 2264 "Cutting cmd %p (tag %d) buffer head " 2265 "to offset %d (cmd->bufflen %d)", cmd, se_cmd->tag, offset, 2266 cmd->bufflen); 2267 if (offset == 0) 2268 *xmit_type &= ~QLA_TGT_XMIT_DATA; 2269 else if (qlt_set_data_offset(cmd, offset)) { 2270 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018, 2271 "qlt_set_data_offset() failed (tag %d)", se_cmd->tag); 2272 } 2273 } 2274 } 2275 #else 2276 static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) 2277 {} 2278 #endif 2279 2280 static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, 2281 struct qla_tgt_prm *prm) 2282 { 2283 prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, 2284 (uint32_t)sizeof(ctio->u.status1.sense_data)); 2285 ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); 2286 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) { 2287 ctio->u.status0.flags |= cpu_to_le16( 2288 CTIO7_FLAGS_EXPLICIT_CONFORM | 2289 CTIO7_FLAGS_CONFORM_REQ); 2290 } 2291 ctio->u.status0.residual = cpu_to_le32(prm->residual); 2292 ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); 2293 if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { 2294 int i; 2295 2296 if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) { 2297 if (prm->cmd->se_cmd.scsi_status != 0) { 2298 ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, 2299 "Skipping EXPLICIT_CONFORM and " 2300 "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " 2301 "non GOOD status\n"); 2302 goto skip_explict_conf; 2303 } 2304 ctio->u.status1.flags |= cpu_to_le16( 2305 CTIO7_FLAGS_EXPLICIT_CONFORM | 2306 CTIO7_FLAGS_CONFORM_REQ); 2307 } 2308 skip_explict_conf: 2309 ctio->u.status1.flags &= 2310 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2311 ctio->u.status1.flags |= 2312 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2313 ctio->u.status1.scsi_status |= 2314 cpu_to_le16(SS_SENSE_LEN_VALID); 2315 ctio->u.status1.sense_length = 2316 cpu_to_le16(prm->sense_buffer_len); 2317 for (i = 0; i < prm->sense_buffer_len/4; i++) 2318 ((uint32_t *)ctio->u.status1.sense_data)[i] = 2319 cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); 2320 #if 0 2321 if (unlikely((prm->sense_buffer_len % 4) != 0)) { 2322 static int q; 2323 if (q < 10) { 2324 ql_dbg(ql_dbg_tgt, vha, 0xe04f, 2325 "qla_target(%d): %d bytes of sense " 2326 "lost", prm->tgt->ha->vp_idx, 2327 prm->sense_buffer_len % 4); 2328 q++; 2329 } 2330 } 2331 #endif 2332 } else { 2333 ctio->u.status1.flags &= 2334 ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); 2335 ctio->u.status1.flags |= 2336 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); 2337 ctio->u.status1.sense_length = 0; 2338 memset(ctio->u.status1.sense_data, 0, 2339 sizeof(ctio->u.status1.sense_data)); 2340 } 2341 2342 /* Sense with len > 24, is it possible ??? */ 2343 } 2344 2345 2346 2347 /* diff */ 2348 static inline int 2349 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) 2350 { 2351 /* 2352 * Uncomment when corresponding SCSI changes are done. 2353 * 2354 if (!sp->cmd->prot_chk) 2355 return 0; 2356 * 2357 */ 2358 switch (se_cmd->prot_op) { 2359 case TARGET_PROT_DOUT_INSERT: 2360 case TARGET_PROT_DIN_STRIP: 2361 if (ql2xenablehba_err_chk >= 1) 2362 return 1; 2363 break; 2364 case TARGET_PROT_DOUT_PASS: 2365 case TARGET_PROT_DIN_PASS: 2366 if (ql2xenablehba_err_chk >= 2) 2367 return 1; 2368 break; 2369 case TARGET_PROT_DIN_INSERT: 2370 case TARGET_PROT_DOUT_STRIP: 2371 return 1; 2372 default: 2373 break; 2374 } 2375 return 0; 2376 } 2377 2378 /* 2379 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command 2380 * 2381 */ 2382 static inline void 2383 qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx) 2384 { 2385 uint32_t lba = 0xffffffff & se_cmd->t_task_lba; 2386 2387 /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2 2388 * have been immplemented by TCM, before AppTag is avail. 2389 * Look for modesense_handlers[] 2390 */ 2391 ctx->app_tag = 0; 2392 ctx->app_tag_mask[0] = 0x0; 2393 ctx->app_tag_mask[1] = 0x0; 2394 2395 switch (se_cmd->prot_type) { 2396 case TARGET_DIF_TYPE0_PROT: 2397 /* 2398 * No check for ql2xenablehba_err_chk, as it would be an 2399 * I/O error if hba tag generation is not done. 2400 */ 2401 ctx->ref_tag = cpu_to_le32(lba); 2402 2403 if (!qlt_hba_err_chk_enabled(se_cmd)) 2404 break; 2405 2406 /* enable ALL bytes of the ref tag */ 2407 ctx->ref_tag_mask[0] = 0xff; 2408 ctx->ref_tag_mask[1] = 0xff; 2409 ctx->ref_tag_mask[2] = 0xff; 2410 ctx->ref_tag_mask[3] = 0xff; 2411 break; 2412 /* 2413 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and 2414 * 16 bit app tag. 2415 */ 2416 case TARGET_DIF_TYPE1_PROT: 2417 ctx->ref_tag = cpu_to_le32(lba); 2418 2419 if (!qlt_hba_err_chk_enabled(se_cmd)) 2420 break; 2421 2422 /* enable ALL bytes of the ref tag */ 2423 ctx->ref_tag_mask[0] = 0xff; 2424 ctx->ref_tag_mask[1] = 0xff; 2425 ctx->ref_tag_mask[2] = 0xff; 2426 ctx->ref_tag_mask[3] = 0xff; 2427 break; 2428 /* 2429 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to 2430 * match LBA in CDB + N 2431 */ 2432 case TARGET_DIF_TYPE2_PROT: 2433 ctx->ref_tag = cpu_to_le32(lba); 2434 2435 if (!qlt_hba_err_chk_enabled(se_cmd)) 2436 break; 2437 2438 /* enable ALL bytes of the ref tag */ 2439 ctx->ref_tag_mask[0] = 0xff; 2440 ctx->ref_tag_mask[1] = 0xff; 2441 ctx->ref_tag_mask[2] = 0xff; 2442 ctx->ref_tag_mask[3] = 0xff; 2443 break; 2444 2445 /* For Type 3 protection: 16 bit GUARD only */ 2446 case TARGET_DIF_TYPE3_PROT: 2447 ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = 2448 ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; 2449 break; 2450 } 2451 } 2452 2453 2454 static inline int 2455 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha) 2456 { 2457 uint32_t *cur_dsd; 2458 uint32_t transfer_length = 0; 2459 uint32_t data_bytes; 2460 uint32_t dif_bytes; 2461 uint8_t bundling = 1; 2462 uint8_t *clr_ptr; 2463 struct crc_context *crc_ctx_pkt = NULL; 2464 struct qla_hw_data *ha; 2465 struct ctio_crc2_to_fw *pkt; 2466 dma_addr_t crc_ctx_dma; 2467 uint16_t fw_prot_opts = 0; 2468 struct qla_tgt_cmd *cmd = prm->cmd; 2469 struct se_cmd *se_cmd = &cmd->se_cmd; 2470 uint32_t h; 2471 struct atio_from_isp *atio = &prm->cmd->atio; 2472 uint16_t t16; 2473 2474 ha = vha->hw; 2475 2476 pkt = (struct ctio_crc2_to_fw *)vha->req->ring_ptr; 2477 prm->pkt = pkt; 2478 memset(pkt, 0, sizeof(*pkt)); 2479 2480 ql_dbg(ql_dbg_tgt, vha, 0xe071, 2481 "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", 2482 vha->vp_idx, __func__, se_cmd, se_cmd->prot_op, 2483 prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); 2484 2485 if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || 2486 (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) 2487 bundling = 0; 2488 2489 /* Compute dif len and adjust data len to incude protection */ 2490 data_bytes = cmd->bufflen; 2491 dif_bytes = (data_bytes / cmd->blk_sz) * 8; 2492 2493 switch (se_cmd->prot_op) { 2494 case TARGET_PROT_DIN_INSERT: 2495 case TARGET_PROT_DOUT_STRIP: 2496 transfer_length = data_bytes; 2497 data_bytes += dif_bytes; 2498 break; 2499 2500 case TARGET_PROT_DIN_STRIP: 2501 case TARGET_PROT_DOUT_INSERT: 2502 case TARGET_PROT_DIN_PASS: 2503 case TARGET_PROT_DOUT_PASS: 2504 transfer_length = data_bytes + dif_bytes; 2505 break; 2506 2507 default: 2508 BUG(); 2509 break; 2510 } 2511 2512 if (!qlt_hba_err_chk_enabled(se_cmd)) 2513 fw_prot_opts |= 0x10; /* Disable Guard tag checking */ 2514 /* HBA error checking enabled */ 2515 else if (IS_PI_UNINIT_CAPABLE(ha)) { 2516 if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || 2517 (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) 2518 fw_prot_opts |= PO_DIS_VALD_APP_ESC; 2519 else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) 2520 fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; 2521 } 2522 2523 switch (se_cmd->prot_op) { 2524 case TARGET_PROT_DIN_INSERT: 2525 case TARGET_PROT_DOUT_INSERT: 2526 fw_prot_opts |= PO_MODE_DIF_INSERT; 2527 break; 2528 case TARGET_PROT_DIN_STRIP: 2529 case TARGET_PROT_DOUT_STRIP: 2530 fw_prot_opts |= PO_MODE_DIF_REMOVE; 2531 break; 2532 case TARGET_PROT_DIN_PASS: 2533 case TARGET_PROT_DOUT_PASS: 2534 fw_prot_opts |= PO_MODE_DIF_PASS; 2535 /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ 2536 break; 2537 default:/* Normal Request */ 2538 fw_prot_opts |= PO_MODE_DIF_PASS; 2539 break; 2540 } 2541 2542 2543 /* ---- PKT ---- */ 2544 /* Update entry type to indicate Command Type CRC_2 IOCB */ 2545 pkt->entry_type = CTIO_CRC2; 2546 pkt->entry_count = 1; 2547 pkt->vp_index = vha->vp_idx; 2548 2549 h = qlt_make_handle(vha); 2550 if (unlikely(h == QLA_TGT_NULL_HANDLE)) { 2551 /* 2552 * CTIO type 7 from the firmware doesn't provide a way to 2553 * know the initiator's LOOP ID, hence we can't find 2554 * the session and, so, the command. 2555 */ 2556 return -EAGAIN; 2557 } else 2558 ha->tgt.cmds[h-1] = prm->cmd; 2559 2560 2561 pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; 2562 pkt->nport_handle = prm->cmd->loop_id; 2563 pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 2564 pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 2565 pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 2566 pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 2567 pkt->exchange_addr = atio->u.isp24.exchange_addr; 2568 2569 /* silence compile warning */ 2570 t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 2571 pkt->ox_id = cpu_to_le16(t16); 2572 2573 t16 = (atio->u.isp24.attr << 9); 2574 pkt->flags |= cpu_to_le16(t16); 2575 pkt->relative_offset = cpu_to_le32(prm->cmd->offset); 2576 2577 /* Set transfer direction */ 2578 if (cmd->dma_data_direction == DMA_TO_DEVICE) 2579 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); 2580 else if (cmd->dma_data_direction == DMA_FROM_DEVICE) 2581 pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); 2582 2583 2584 pkt->dseg_count = prm->tot_dsds; 2585 /* Fibre channel byte count */ 2586 pkt->transfer_length = cpu_to_le32(transfer_length); 2587 2588 2589 /* ----- CRC context -------- */ 2590 2591 /* Allocate CRC context from global pool */ 2592 crc_ctx_pkt = cmd->ctx = 2593 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); 2594 2595 if (!crc_ctx_pkt) 2596 goto crc_queuing_error; 2597 2598 /* Zero out CTX area. */ 2599 clr_ptr = (uint8_t *)crc_ctx_pkt; 2600 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt)); 2601 2602 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; 2603 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); 2604 2605 /* Set handle */ 2606 crc_ctx_pkt->handle = pkt->handle; 2607 2608 qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt); 2609 2610 pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma)); 2611 pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma)); 2612 pkt->crc_context_len = CRC_CONTEXT_LEN_FW; 2613 2614 2615 if (!bundling) { 2616 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address; 2617 } else { 2618 /* 2619 * Configure Bundling if we need to fetch interlaving 2620 * protection PCI accesses 2621 */ 2622 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; 2623 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); 2624 crc_ctx_pkt->u.bundling.dseg_count = 2625 cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); 2626 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address; 2627 } 2628 2629 /* Finish the common fields of CRC pkt */ 2630 crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); 2631 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); 2632 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); 2633 crc_ctx_pkt->guard_seed = cpu_to_le16(0); 2634 2635 2636 /* Walks data segments */ 2637 pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); 2638 2639 if (!bundling && prm->prot_seg_cnt) { 2640 if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, 2641 prm->tot_dsds, cmd)) 2642 goto crc_queuing_error; 2643 } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, 2644 (prm->tot_dsds - prm->prot_seg_cnt), cmd)) 2645 goto crc_queuing_error; 2646 2647 if (bundling && prm->prot_seg_cnt) { 2648 /* Walks dif segments */ 2649 pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; 2650 2651 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address; 2652 if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, 2653 prm->prot_seg_cnt, cmd)) 2654 goto crc_queuing_error; 2655 } 2656 return QLA_SUCCESS; 2657 2658 crc_queuing_error: 2659 /* Cleanup will be performed by the caller */ 2660 2661 return QLA_FUNCTION_FAILED; 2662 } 2663 2664 2665 /* 2666 * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * 2667 * QLA_TGT_XMIT_STATUS for >= 24xx silicon 2668 */ 2669 int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, 2670 uint8_t scsi_status) 2671 { 2672 struct scsi_qla_host *vha = cmd->vha; 2673 struct qla_hw_data *ha = vha->hw; 2674 struct ctio7_to_24xx *pkt; 2675 struct qla_tgt_prm prm; 2676 uint32_t full_req_cnt = 0; 2677 unsigned long flags = 0; 2678 int res; 2679 2680 spin_lock_irqsave(&ha->hardware_lock, flags); 2681 if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 2682 cmd->state = QLA_TGT_STATE_PROCESSED; 2683 if (cmd->sess->logout_completed) 2684 /* no need to terminate. FW already freed exchange. */ 2685 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2686 else 2687 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 2688 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2689 return 0; 2690 } 2691 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2692 2693 memset(&prm, 0, sizeof(prm)); 2694 qlt_check_srr_debug(cmd, &xmit_type); 2695 2696 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, 2697 "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p]\n", 2698 (xmit_type & QLA_TGT_XMIT_STATUS) ? 2699 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, 2700 &cmd->se_cmd); 2701 2702 res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, 2703 &full_req_cnt); 2704 if (unlikely(res != 0)) { 2705 return res; 2706 } 2707 2708 spin_lock_irqsave(&ha->hardware_lock, flags); 2709 2710 if (xmit_type == QLA_TGT_XMIT_STATUS) 2711 vha->tgt_counters.core_qla_snd_status++; 2712 else 2713 vha->tgt_counters.core_qla_que_buf++; 2714 2715 if (!vha->flags.online || cmd->reset_count != ha->chip_reset) { 2716 /* 2717 * Either the port is not online or this request was from 2718 * previous life, just abort the processing. 2719 */ 2720 cmd->state = QLA_TGT_STATE_PROCESSED; 2721 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2722 ql_dbg(ql_dbg_async, vha, 0xe101, 2723 "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", 2724 vha->flags.online, qla2x00_reset_active(vha), 2725 cmd->reset_count, ha->chip_reset); 2726 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2727 return 0; 2728 } 2729 2730 /* Does F/W have an IOCBs for this request */ 2731 res = qlt_check_reserve_free_req(vha, full_req_cnt); 2732 if (unlikely(res)) 2733 goto out_unmap_unlock; 2734 2735 if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) 2736 res = qlt_build_ctio_crc2_pkt(&prm, vha); 2737 else 2738 res = qlt_24xx_build_ctio_pkt(&prm, vha); 2739 if (unlikely(res != 0)) { 2740 vha->req->cnt += full_req_cnt; 2741 goto out_unmap_unlock; 2742 } 2743 2744 pkt = (struct ctio7_to_24xx *)prm.pkt; 2745 2746 if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { 2747 pkt->u.status0.flags |= 2748 cpu_to_le16(CTIO7_FLAGS_DATA_IN | 2749 CTIO7_FLAGS_STATUS_MODE_0); 2750 2751 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 2752 qlt_load_data_segments(&prm, vha); 2753 2754 if (prm.add_status_pkt == 0) { 2755 if (xmit_type & QLA_TGT_XMIT_STATUS) { 2756 pkt->u.status0.scsi_status = 2757 cpu_to_le16(prm.rq_result); 2758 pkt->u.status0.residual = 2759 cpu_to_le32(prm.residual); 2760 pkt->u.status0.flags |= cpu_to_le16( 2761 CTIO7_FLAGS_SEND_STATUS); 2762 if (qlt_need_explicit_conf(ha, cmd, 0)) { 2763 pkt->u.status0.flags |= 2764 cpu_to_le16( 2765 CTIO7_FLAGS_EXPLICIT_CONFORM | 2766 CTIO7_FLAGS_CONFORM_REQ); 2767 } 2768 } 2769 2770 } else { 2771 /* 2772 * We have already made sure that there is sufficient 2773 * amount of request entries to not drop HW lock in 2774 * req_pkt(). 2775 */ 2776 struct ctio7_to_24xx *ctio = 2777 (struct ctio7_to_24xx *)qlt_get_req_pkt(vha); 2778 2779 ql_dbg(ql_dbg_io, vha, 0x305e, 2780 "Building additional status packet 0x%p.\n", 2781 ctio); 2782 2783 /* 2784 * T10Dif: ctio_crc2_to_fw overlay ontop of 2785 * ctio7_to_24xx 2786 */ 2787 memcpy(ctio, pkt, sizeof(*ctio)); 2788 /* reset back to CTIO7 */ 2789 ctio->entry_count = 1; 2790 ctio->entry_type = CTIO_TYPE7; 2791 ctio->dseg_count = 0; 2792 ctio->u.status1.flags &= ~cpu_to_le16( 2793 CTIO7_FLAGS_DATA_IN); 2794 2795 /* Real finish is ctio_m1's finish */ 2796 pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; 2797 pkt->u.status0.flags |= cpu_to_le16( 2798 CTIO7_FLAGS_DONT_RET_CTIO); 2799 2800 /* qlt_24xx_init_ctio_to_isp will correct 2801 * all neccessary fields that's part of CTIO7. 2802 * There should be no residual of CTIO-CRC2 data. 2803 */ 2804 qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, 2805 &prm); 2806 pr_debug("Status CTIO7: %p\n", ctio); 2807 } 2808 } else 2809 qlt_24xx_init_ctio_to_isp(pkt, &prm); 2810 2811 2812 cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ 2813 cmd->cmd_sent_to_fw = 1; 2814 2815 /* Memory Barrier */ 2816 wmb(); 2817 qla2x00_start_iocbs(vha, vha->req); 2818 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2819 2820 return 0; 2821 2822 out_unmap_unlock: 2823 qlt_unmap_sg(vha, cmd); 2824 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2825 2826 return res; 2827 } 2828 EXPORT_SYMBOL(qlt_xmit_response); 2829 2830 int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) 2831 { 2832 struct ctio7_to_24xx *pkt; 2833 struct scsi_qla_host *vha = cmd->vha; 2834 struct qla_hw_data *ha = vha->hw; 2835 struct qla_tgt *tgt = cmd->tgt; 2836 struct qla_tgt_prm prm; 2837 unsigned long flags; 2838 int res = 0; 2839 2840 memset(&prm, 0, sizeof(prm)); 2841 prm.cmd = cmd; 2842 prm.tgt = tgt; 2843 prm.sg = NULL; 2844 prm.req_cnt = 1; 2845 2846 /* Send marker if required */ 2847 if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) 2848 return -EIO; 2849 2850 /* Calculate number of entries and segments required */ 2851 if (qlt_pci_map_calc_cnt(&prm) != 0) 2852 return -EAGAIN; 2853 2854 spin_lock_irqsave(&ha->hardware_lock, flags); 2855 2856 if (!vha->flags.online || (cmd->reset_count != ha->chip_reset) || 2857 (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) { 2858 /* 2859 * Either the port is not online or this request was from 2860 * previous life, just abort the processing. 2861 */ 2862 cmd->state = QLA_TGT_STATE_NEED_DATA; 2863 qlt_abort_cmd_on_host_reset(cmd->vha, cmd); 2864 ql_dbg(ql_dbg_async, vha, 0xe102, 2865 "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", 2866 vha->flags.online, qla2x00_reset_active(vha), 2867 cmd->reset_count, ha->chip_reset); 2868 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2869 return 0; 2870 } 2871 2872 /* Does F/W have an IOCBs for this request */ 2873 res = qlt_check_reserve_free_req(vha, prm.req_cnt); 2874 if (res != 0) 2875 goto out_unlock_free_unmap; 2876 if (cmd->se_cmd.prot_op) 2877 res = qlt_build_ctio_crc2_pkt(&prm, vha); 2878 else 2879 res = qlt_24xx_build_ctio_pkt(&prm, vha); 2880 2881 if (unlikely(res != 0)) { 2882 vha->req->cnt += prm.req_cnt; 2883 goto out_unlock_free_unmap; 2884 } 2885 2886 pkt = (struct ctio7_to_24xx *)prm.pkt; 2887 pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | 2888 CTIO7_FLAGS_STATUS_MODE_0); 2889 2890 if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) 2891 qlt_load_data_segments(&prm, vha); 2892 2893 cmd->state = QLA_TGT_STATE_NEED_DATA; 2894 cmd->cmd_sent_to_fw = 1; 2895 2896 /* Memory Barrier */ 2897 wmb(); 2898 qla2x00_start_iocbs(vha, vha->req); 2899 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2900 2901 return res; 2902 2903 out_unlock_free_unmap: 2904 qlt_unmap_sg(vha, cmd); 2905 spin_unlock_irqrestore(&ha->hardware_lock, flags); 2906 2907 return res; 2908 } 2909 EXPORT_SYMBOL(qlt_rdy_to_xfer); 2910 2911 2912 /* 2913 * Checks the guard or meta-data for the type of error 2914 * detected by the HBA. 2915 */ 2916 static inline int 2917 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd, 2918 struct ctio_crc_from_fw *sts) 2919 { 2920 uint8_t *ap = &sts->actual_dif[0]; 2921 uint8_t *ep = &sts->expected_dif[0]; 2922 uint32_t e_ref_tag, a_ref_tag; 2923 uint16_t e_app_tag, a_app_tag; 2924 uint16_t e_guard, a_guard; 2925 uint64_t lba = cmd->se_cmd.t_task_lba; 2926 2927 a_guard = be16_to_cpu(*(uint16_t *)(ap + 0)); 2928 a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2)); 2929 a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4)); 2930 2931 e_guard = be16_to_cpu(*(uint16_t *)(ep + 0)); 2932 e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2)); 2933 e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4)); 2934 2935 ql_dbg(ql_dbg_tgt, vha, 0xe075, 2936 "iocb(s) %p Returned STATUS.\n", sts); 2937 2938 ql_dbg(ql_dbg_tgt, vha, 0xf075, 2939 "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", 2940 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 2941 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard); 2942 2943 /* 2944 * Ignore sector if: 2945 * For type 3: ref & app tag is all 'f's 2946 * For type 0,1,2: app tag is all 'f's 2947 */ 2948 if ((a_app_tag == 0xffff) && 2949 ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) || 2950 (a_ref_tag == 0xffffffff))) { 2951 uint32_t blocks_done; 2952 2953 /* 2TB boundary case covered automatically with this */ 2954 blocks_done = e_ref_tag - (uint32_t)lba + 1; 2955 cmd->se_cmd.bad_sector = e_ref_tag; 2956 cmd->se_cmd.pi_err = 0; 2957 ql_dbg(ql_dbg_tgt, vha, 0xf074, 2958 "need to return scsi good\n"); 2959 2960 /* Update protection tag */ 2961 if (cmd->prot_sg_cnt) { 2962 uint32_t i, k = 0, num_ent; 2963 struct scatterlist *sg, *sgl; 2964 2965 2966 sgl = cmd->prot_sg; 2967 2968 /* Patch the corresponding protection tags */ 2969 for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) { 2970 num_ent = sg_dma_len(sg) / 8; 2971 if (k + num_ent < blocks_done) { 2972 k += num_ent; 2973 continue; 2974 } 2975 k = blocks_done; 2976 break; 2977 } 2978 2979 if (k != blocks_done) { 2980 ql_log(ql_log_warn, vha, 0xf076, 2981 "unexpected tag values tag:lba=%u:%llu)\n", 2982 e_ref_tag, (unsigned long long)lba); 2983 goto out; 2984 } 2985 2986 #if 0 2987 struct sd_dif_tuple *spt; 2988 /* TODO: 2989 * This section came from initiator. Is it valid here? 2990 * should ulp be override with actual val??? 2991 */ 2992 spt = page_address(sg_page(sg)) + sg->offset; 2993 spt += j; 2994 2995 spt->app_tag = 0xffff; 2996 if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3) 2997 spt->ref_tag = 0xffffffff; 2998 #endif 2999 } 3000 3001 return 0; 3002 } 3003 3004 /* check guard */ 3005 if (e_guard != a_guard) { 3006 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 3007 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba; 3008 3009 ql_log(ql_log_warn, vha, 0xe076, 3010 "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", 3011 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3012 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 3013 a_guard, e_guard, cmd); 3014 goto out; 3015 } 3016 3017 /* check ref tag */ 3018 if (e_ref_tag != a_ref_tag) { 3019 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 3020 cmd->se_cmd.bad_sector = e_ref_tag; 3021 3022 ql_log(ql_log_warn, vha, 0xe077, 3023 "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", 3024 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3025 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 3026 a_guard, e_guard, cmd); 3027 goto out; 3028 } 3029 3030 /* check appl tag */ 3031 if (e_app_tag != a_app_tag) { 3032 cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 3033 cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba; 3034 3035 ql_log(ql_log_warn, vha, 0xe078, 3036 "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", 3037 cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba, 3038 a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, 3039 a_guard, e_guard, cmd); 3040 goto out; 3041 } 3042 out: 3043 return 1; 3044 } 3045 3046 3047 /* If hardware_lock held on entry, might drop it, then reaquire */ 3048 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3049 static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3050 struct imm_ntfy_from_isp *ntfy) 3051 { 3052 struct nack_to_isp *nack; 3053 struct qla_hw_data *ha = vha->hw; 3054 request_t *pkt; 3055 int ret = 0; 3056 3057 ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, 3058 "Sending TERM ELS CTIO (ha=%p)\n", ha); 3059 3060 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 3061 if (pkt == NULL) { 3062 ql_dbg(ql_dbg_tgt, vha, 0xe080, 3063 "qla_target(%d): %s failed: unable to allocate " 3064 "request packet\n", vha->vp_idx, __func__); 3065 return -ENOMEM; 3066 } 3067 3068 pkt->entry_type = NOTIFY_ACK_TYPE; 3069 pkt->entry_count = 1; 3070 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3071 3072 nack = (struct nack_to_isp *)pkt; 3073 nack->ox_id = ntfy->ox_id; 3074 3075 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; 3076 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { 3077 nack->u.isp24.flags = ntfy->u.isp24.flags & 3078 __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); 3079 } 3080 3081 /* terminate */ 3082 nack->u.isp24.flags |= 3083 __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); 3084 3085 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; 3086 nack->u.isp24.status = ntfy->u.isp24.status; 3087 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; 3088 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; 3089 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; 3090 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; 3091 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; 3092 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; 3093 3094 qla2x00_start_iocbs(vha, vha->req); 3095 return ret; 3096 } 3097 3098 static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, 3099 struct imm_ntfy_from_isp *imm, int ha_locked) 3100 { 3101 unsigned long flags = 0; 3102 int rc; 3103 3104 if (qlt_issue_marker(vha, ha_locked) < 0) 3105 return; 3106 3107 if (ha_locked) { 3108 rc = __qlt_send_term_imm_notif(vha, imm); 3109 3110 #if 0 /* Todo */ 3111 if (rc == -ENOMEM) 3112 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3113 #endif 3114 goto done; 3115 } 3116 3117 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3118 rc = __qlt_send_term_imm_notif(vha, imm); 3119 3120 #if 0 /* Todo */ 3121 if (rc == -ENOMEM) 3122 qlt_alloc_qfull_cmd(vha, imm, 0, 0); 3123 #endif 3124 3125 done: 3126 if (!ha_locked) 3127 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3128 } 3129 3130 /* If hardware_lock held on entry, might drop it, then reaquire */ 3131 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ 3132 static int __qlt_send_term_exchange(struct scsi_qla_host *vha, 3133 struct qla_tgt_cmd *cmd, 3134 struct atio_from_isp *atio) 3135 { 3136 struct ctio7_to_24xx *ctio24; 3137 struct qla_hw_data *ha = vha->hw; 3138 request_t *pkt; 3139 int ret = 0; 3140 uint16_t temp; 3141 3142 ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha); 3143 3144 pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL); 3145 if (pkt == NULL) { 3146 ql_dbg(ql_dbg_tgt, vha, 0xe050, 3147 "qla_target(%d): %s failed: unable to allocate " 3148 "request packet\n", vha->vp_idx, __func__); 3149 return -ENOMEM; 3150 } 3151 3152 if (cmd != NULL) { 3153 if (cmd->state < QLA_TGT_STATE_PROCESSED) { 3154 ql_dbg(ql_dbg_tgt, vha, 0xe051, 3155 "qla_target(%d): Terminating cmd %p with " 3156 "incorrect state %d\n", vha->vp_idx, cmd, 3157 cmd->state); 3158 } else 3159 ret = 1; 3160 } 3161 3162 vha->tgt_counters.num_term_xchg_sent++; 3163 pkt->entry_count = 1; 3164 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 3165 3166 ctio24 = (struct ctio7_to_24xx *)pkt; 3167 ctio24->entry_type = CTIO_TYPE7; 3168 ctio24->nport_handle = CTIO7_NHANDLE_UNRECOGNIZED; 3169 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 3170 ctio24->vp_index = vha->vp_idx; 3171 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 3172 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 3173 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 3174 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 3175 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 3176 cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | 3177 CTIO7_FLAGS_TERMINATE); 3178 temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); 3179 ctio24->u.status1.ox_id = cpu_to_le16(temp); 3180 3181 /* Most likely, it isn't needed */ 3182 ctio24->u.status1.residual = get_unaligned((uint32_t *) 3183 &atio->u.isp24.fcp_cmnd.add_cdb[ 3184 atio->u.isp24.fcp_cmnd.add_cdb_len]); 3185 if (ctio24->u.status1.residual != 0) 3186 ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; 3187 3188 /* Memory Barrier */ 3189 wmb(); 3190 qla2x00_start_iocbs(vha, vha->req); 3191 return ret; 3192 } 3193 3194 static void qlt_send_term_exchange(struct scsi_qla_host *vha, 3195 struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, 3196 int ul_abort) 3197 { 3198 unsigned long flags = 0; 3199 int rc; 3200 3201 if (qlt_issue_marker(vha, ha_locked) < 0) 3202 return; 3203 3204 if (ha_locked) { 3205 rc = __qlt_send_term_exchange(vha, cmd, atio); 3206 if (rc == -ENOMEM) 3207 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3208 goto done; 3209 } 3210 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 3211 rc = __qlt_send_term_exchange(vha, cmd, atio); 3212 if (rc == -ENOMEM) 3213 qlt_alloc_qfull_cmd(vha, atio, 0, 0); 3214 3215 done: 3216 if (cmd && !ul_abort && !cmd->aborted) { 3217 if (cmd->sg_mapped) 3218 qlt_unmap_sg(vha, cmd); 3219 vha->hw->tgt.tgt_ops->free_cmd(cmd); 3220 } 3221 3222 if (!ha_locked) 3223 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 3224 3225 return; 3226 } 3227 3228 static void qlt_init_term_exchange(struct scsi_qla_host *vha) 3229 { 3230 struct list_head free_list; 3231 struct qla_tgt_cmd *cmd, *tcmd; 3232 3233 vha->hw->tgt.leak_exchg_thresh_hold = 3234 (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; 3235 3236 cmd = tcmd = NULL; 3237 if (!list_empty(&vha->hw->tgt.q_full_list)) { 3238 INIT_LIST_HEAD(&free_list); 3239 list_splice_init(&vha->hw->tgt.q_full_list, &free_list); 3240 3241 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 3242 list_del(&cmd->cmd_list); 3243 /* This cmd was never sent to TCM. There is no need 3244 * to schedule free or call free_cmd 3245 */ 3246 qlt_free_cmd(cmd); 3247 vha->hw->tgt.num_qfull_cmds_alloc--; 3248 } 3249 } 3250 vha->hw->tgt.num_qfull_cmds_dropped = 0; 3251 } 3252 3253 static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) 3254 { 3255 uint32_t total_leaked; 3256 3257 total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; 3258 3259 if (vha->hw->tgt.leak_exchg_thresh_hold && 3260 (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { 3261 3262 ql_dbg(ql_dbg_tgt, vha, 0xe079, 3263 "Chip reset due to exchange starvation: %d/%d.\n", 3264 total_leaked, vha->hw->cur_fw_xcb_count); 3265 3266 if (IS_P3P_TYPE(vha->hw)) 3267 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); 3268 else 3269 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 3270 qla2xxx_wake_dpc(vha); 3271 } 3272 3273 } 3274 3275 int qlt_abort_cmd(struct qla_tgt_cmd *cmd) 3276 { 3277 struct qla_tgt *tgt = cmd->tgt; 3278 struct scsi_qla_host *vha = tgt->vha; 3279 struct se_cmd *se_cmd = &cmd->se_cmd; 3280 unsigned long flags; 3281 3282 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, 3283 "qla_target(%d): terminating exchange for aborted cmd=%p " 3284 "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, 3285 se_cmd->tag); 3286 3287 spin_lock_irqsave(&cmd->cmd_lock, flags); 3288 if (cmd->aborted) { 3289 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3290 /* 3291 * It's normal to see 2 calls in this path: 3292 * 1) XFER Rdy completion + CMD_T_ABORT 3293 * 2) TCM TMR - drain_state_list 3294 */ 3295 ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, 3296 "multiple abort. %p transport_state %x, t_state %x," 3297 " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state, 3298 cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags); 3299 return EIO; 3300 } 3301 cmd->aborted = 1; 3302 cmd->cmd_flags |= BIT_6; 3303 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 3304 3305 qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1); 3306 return 0; 3307 } 3308 EXPORT_SYMBOL(qlt_abort_cmd); 3309 3310 void qlt_free_cmd(struct qla_tgt_cmd *cmd) 3311 { 3312 struct qla_tgt_sess *sess = cmd->sess; 3313 3314 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, 3315 "%s: se_cmd[%p] ox_id %04x\n", 3316 __func__, &cmd->se_cmd, 3317 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 3318 3319 BUG_ON(cmd->cmd_in_wq); 3320 3321 if (cmd->sg_mapped) 3322 qlt_unmap_sg(cmd->vha, cmd); 3323 3324 if (!cmd->q_full) 3325 qlt_decr_num_pend_cmds(cmd->vha); 3326 3327 BUG_ON(cmd->sg_mapped); 3328 cmd->jiffies_at_free = get_jiffies_64(); 3329 if (unlikely(cmd->free_sg)) 3330 kfree(cmd->sg); 3331 3332 if (!sess || !sess->se_sess) { 3333 WARN_ON(1); 3334 return; 3335 } 3336 cmd->jiffies_at_free = get_jiffies_64(); 3337 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3338 } 3339 EXPORT_SYMBOL(qlt_free_cmd); 3340 3341 /* ha->hardware_lock supposed to be held on entry */ 3342 static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha, 3343 struct qla_tgt_cmd *cmd, void *ctio) 3344 { 3345 struct qla_tgt_srr_ctio *sc; 3346 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3347 struct qla_tgt_srr_imm *imm; 3348 3349 tgt->ctio_srr_id++; 3350 cmd->cmd_flags |= BIT_15; 3351 3352 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, 3353 "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx); 3354 3355 if (!ctio) { 3356 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055, 3357 "qla_target(%d): SRR CTIO, but ctio is NULL\n", 3358 vha->vp_idx); 3359 return -EINVAL; 3360 } 3361 3362 sc = kzalloc(sizeof(*sc), GFP_ATOMIC); 3363 if (sc != NULL) { 3364 sc->cmd = cmd; 3365 /* IRQ is already OFF */ 3366 spin_lock(&tgt->srr_lock); 3367 sc->srr_id = tgt->ctio_srr_id; 3368 list_add_tail(&sc->srr_list_entry, 3369 &tgt->srr_ctio_list); 3370 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, 3371 "CTIO SRR %p added (id %d)\n", sc, sc->srr_id); 3372 if (tgt->imm_srr_id == tgt->ctio_srr_id) { 3373 int found = 0; 3374 list_for_each_entry(imm, &tgt->srr_imm_list, 3375 srr_list_entry) { 3376 if (imm->srr_id == sc->srr_id) { 3377 found = 1; 3378 break; 3379 } 3380 } 3381 if (found) { 3382 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b, 3383 "Scheduling srr work\n"); 3384 schedule_work(&tgt->srr_work); 3385 } else { 3386 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056, 3387 "qla_target(%d): imm_srr_id " 3388 "== ctio_srr_id (%d), but there is no " 3389 "corresponding SRR IMM, deleting CTIO " 3390 "SRR %p\n", vha->vp_idx, 3391 tgt->ctio_srr_id, sc); 3392 list_del(&sc->srr_list_entry); 3393 spin_unlock(&tgt->srr_lock); 3394 3395 kfree(sc); 3396 return -EINVAL; 3397 } 3398 } 3399 spin_unlock(&tgt->srr_lock); 3400 } else { 3401 struct qla_tgt_srr_imm *ti; 3402 3403 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057, 3404 "qla_target(%d): Unable to allocate SRR CTIO entry\n", 3405 vha->vp_idx); 3406 spin_lock(&tgt->srr_lock); 3407 list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list, 3408 srr_list_entry) { 3409 if (imm->srr_id == tgt->ctio_srr_id) { 3410 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c, 3411 "IMM SRR %p deleted (id %d)\n", 3412 imm, imm->srr_id); 3413 list_del(&imm->srr_list_entry); 3414 qlt_reject_free_srr_imm(vha, imm, 1); 3415 } 3416 } 3417 spin_unlock(&tgt->srr_lock); 3418 3419 return -ENOMEM; 3420 } 3421 3422 return 0; 3423 } 3424 3425 /* 3426 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3427 */ 3428 static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, 3429 struct qla_tgt_cmd *cmd, uint32_t status) 3430 { 3431 int term = 0; 3432 3433 if (ctio != NULL) { 3434 struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; 3435 term = !(c->flags & 3436 cpu_to_le16(OF_TERM_EXCH)); 3437 } else 3438 term = 1; 3439 3440 if (term) 3441 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 3442 3443 return term; 3444 } 3445 3446 /* ha->hardware_lock supposed to be held on entry */ 3447 static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha, 3448 uint32_t handle) 3449 { 3450 struct qla_hw_data *ha = vha->hw; 3451 3452 handle--; 3453 if (ha->tgt.cmds[handle] != NULL) { 3454 struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle]; 3455 ha->tgt.cmds[handle] = NULL; 3456 return cmd; 3457 } else 3458 return NULL; 3459 } 3460 3461 /* ha->hardware_lock supposed to be held on entry */ 3462 static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, 3463 uint32_t handle, void *ctio) 3464 { 3465 struct qla_tgt_cmd *cmd = NULL; 3466 3467 /* Clear out internal marks */ 3468 handle &= ~(CTIO_COMPLETION_HANDLE_MARK | 3469 CTIO_INTERMEDIATE_HANDLE_MARK); 3470 3471 if (handle != QLA_TGT_NULL_HANDLE) { 3472 if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) 3473 return NULL; 3474 3475 /* handle-1 is actually used */ 3476 if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) { 3477 ql_dbg(ql_dbg_tgt, vha, 0xe052, 3478 "qla_target(%d): Wrong handle %x received\n", 3479 vha->vp_idx, handle); 3480 return NULL; 3481 } 3482 cmd = qlt_get_cmd(vha, handle); 3483 if (unlikely(cmd == NULL)) { 3484 ql_dbg(ql_dbg_tgt, vha, 0xe053, 3485 "qla_target(%d): Suspicious: unable to " 3486 "find the command with handle %x\n", vha->vp_idx, 3487 handle); 3488 return NULL; 3489 } 3490 } else if (ctio != NULL) { 3491 /* We can't get loop ID from CTIO7 */ 3492 ql_dbg(ql_dbg_tgt, vha, 0xe054, 3493 "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " 3494 "support NULL handles\n", vha->vp_idx); 3495 return NULL; 3496 } 3497 3498 return cmd; 3499 } 3500 3501 /* hardware_lock should be held by caller. */ 3502 static void 3503 qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) 3504 { 3505 struct qla_hw_data *ha = vha->hw; 3506 uint32_t handle; 3507 3508 if (cmd->sg_mapped) 3509 qlt_unmap_sg(vha, cmd); 3510 3511 handle = qlt_make_handle(vha); 3512 3513 /* TODO: fix debug message type and ids. */ 3514 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3515 ql_dbg(ql_dbg_io, vha, 0xff00, 3516 "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle); 3517 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3518 cmd->write_data_transferred = 0; 3519 cmd->state = QLA_TGT_STATE_DATA_IN; 3520 3521 ql_dbg(ql_dbg_io, vha, 0xff01, 3522 "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle); 3523 3524 ha->tgt.tgt_ops->handle_data(cmd); 3525 return; 3526 } else { 3527 ql_dbg(ql_dbg_io, vha, 0xff03, 3528 "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle, 3529 cmd->state); 3530 dump_stack(); 3531 } 3532 3533 cmd->cmd_flags |= BIT_17; 3534 ha->tgt.tgt_ops->free_cmd(cmd); 3535 } 3536 3537 void 3538 qlt_host_reset_handler(struct qla_hw_data *ha) 3539 { 3540 struct qla_tgt_cmd *cmd; 3541 unsigned long flags; 3542 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 3543 scsi_qla_host_t *vha = NULL; 3544 struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt; 3545 uint32_t i; 3546 3547 if (!base_vha->hw->tgt.tgt_ops) 3548 return; 3549 3550 if (!tgt || qla_ini_mode_enabled(base_vha)) { 3551 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003, 3552 "Target mode disabled\n"); 3553 return; 3554 } 3555 3556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10, 3557 "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n", 3558 base_vha->dpc_flags); 3559 3560 spin_lock_irqsave(&ha->hardware_lock, flags); 3561 for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) { 3562 cmd = qlt_get_cmd(base_vha, i); 3563 if (!cmd) 3564 continue; 3565 /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */ 3566 vha = cmd->vha; 3567 qlt_abort_cmd_on_host_reset(vha, cmd); 3568 } 3569 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3570 } 3571 3572 3573 /* 3574 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 3575 */ 3576 static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, 3577 uint32_t status, void *ctio) 3578 { 3579 struct qla_hw_data *ha = vha->hw; 3580 struct se_cmd *se_cmd; 3581 struct qla_tgt_cmd *cmd; 3582 3583 if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { 3584 /* That could happen only in case of an error/reset/abort */ 3585 if (status != CTIO_SUCCESS) { 3586 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, 3587 "Intermediate CTIO received" 3588 " (status %x)\n", status); 3589 } 3590 return; 3591 } 3592 3593 cmd = qlt_ctio_to_cmd(vha, handle, ctio); 3594 if (cmd == NULL) 3595 return; 3596 3597 se_cmd = &cmd->se_cmd; 3598 cmd->cmd_sent_to_fw = 0; 3599 3600 qlt_unmap_sg(vha, cmd); 3601 3602 if (unlikely(status != CTIO_SUCCESS)) { 3603 switch (status & 0xFFFF) { 3604 case CTIO_LIP_RESET: 3605 case CTIO_TARGET_RESET: 3606 case CTIO_ABORTED: 3607 /* driver request abort via Terminate exchange */ 3608 case CTIO_TIMEOUT: 3609 case CTIO_INVALID_RX_ID: 3610 /* They are OK */ 3611 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, 3612 "qla_target(%d): CTIO with " 3613 "status %#x received, state %x, se_cmd %p, " 3614 "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " 3615 "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, 3616 status, cmd->state, se_cmd); 3617 break; 3618 3619 case CTIO_PORT_LOGGED_OUT: 3620 case CTIO_PORT_UNAVAILABLE: 3621 { 3622 int logged_out = 3623 (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; 3624 3625 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3626 "qla_target(%d): CTIO with %s status %x " 3627 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3628 logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", 3629 status, cmd->state, se_cmd); 3630 3631 if (logged_out && cmd->sess) { 3632 /* 3633 * Session is already logged out, but we need 3634 * to notify initiator, who's not aware of this 3635 */ 3636 cmd->sess->logout_on_delete = 0; 3637 cmd->sess->send_els_logo = 1; 3638 qlt_schedule_sess_for_deletion(cmd->sess, true); 3639 } 3640 break; 3641 } 3642 case CTIO_SRR_RECEIVED: 3643 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a, 3644 "qla_target(%d): CTIO with SRR_RECEIVED" 3645 " status %x received (state %x, se_cmd %p)\n", 3646 vha->vp_idx, status, cmd->state, se_cmd); 3647 if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0) 3648 break; 3649 else 3650 return; 3651 3652 case CTIO_DIF_ERROR: { 3653 struct ctio_crc_from_fw *crc = 3654 (struct ctio_crc_from_fw *)ctio; 3655 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, 3656 "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n", 3657 vha->vp_idx, status, cmd->state, se_cmd, 3658 *((u64 *)&crc->actual_dif[0]), 3659 *((u64 *)&crc->expected_dif[0])); 3660 3661 if (qlt_handle_dif_error(vha, cmd, ctio)) { 3662 if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3663 /* scsi Write/xfer rdy complete */ 3664 goto skip_term; 3665 } else { 3666 /* scsi read/xmit respond complete 3667 * call handle dif to send scsi status 3668 * rather than terminate exchange. 3669 */ 3670 cmd->state = QLA_TGT_STATE_PROCESSED; 3671 ha->tgt.tgt_ops->handle_dif_err(cmd); 3672 return; 3673 } 3674 } else { 3675 /* Need to generate a SCSI good completion. 3676 * because FW did not send scsi status. 3677 */ 3678 status = 0; 3679 goto skip_term; 3680 } 3681 break; 3682 } 3683 default: 3684 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, 3685 "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", 3686 vha->vp_idx, status, cmd->state, se_cmd); 3687 break; 3688 } 3689 3690 3691 /* "cmd->aborted" means 3692 * cmd is already aborted/terminated, we don't 3693 * need to terminate again. The exchange is already 3694 * cleaned up/freed at FW level. Just cleanup at driver 3695 * level. 3696 */ 3697 if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && 3698 (!cmd->aborted)) { 3699 cmd->cmd_flags |= BIT_13; 3700 if (qlt_term_ctio_exchange(vha, ctio, cmd, status)) 3701 return; 3702 } 3703 } 3704 skip_term: 3705 3706 if (cmd->state == QLA_TGT_STATE_PROCESSED) { 3707 cmd->cmd_flags |= BIT_12; 3708 } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 3709 cmd->state = QLA_TGT_STATE_DATA_IN; 3710 3711 if (status == CTIO_SUCCESS) 3712 cmd->write_data_transferred = 1; 3713 3714 ha->tgt.tgt_ops->handle_data(cmd); 3715 return; 3716 } else if (cmd->aborted) { 3717 cmd->cmd_flags |= BIT_18; 3718 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, 3719 "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); 3720 } else { 3721 cmd->cmd_flags |= BIT_19; 3722 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, 3723 "qla_target(%d): A command in state (%d) should " 3724 "not return a CTIO complete\n", vha->vp_idx, cmd->state); 3725 } 3726 3727 if (unlikely(status != CTIO_SUCCESS) && 3728 !cmd->aborted) { 3729 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); 3730 dump_stack(); 3731 } 3732 3733 ha->tgt.tgt_ops->free_cmd(cmd); 3734 } 3735 3736 static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, 3737 uint8_t task_codes) 3738 { 3739 int fcp_task_attr; 3740 3741 switch (task_codes) { 3742 case ATIO_SIMPLE_QUEUE: 3743 fcp_task_attr = TCM_SIMPLE_TAG; 3744 break; 3745 case ATIO_HEAD_OF_QUEUE: 3746 fcp_task_attr = TCM_HEAD_TAG; 3747 break; 3748 case ATIO_ORDERED_QUEUE: 3749 fcp_task_attr = TCM_ORDERED_TAG; 3750 break; 3751 case ATIO_ACA_QUEUE: 3752 fcp_task_attr = TCM_ACA_TAG; 3753 break; 3754 case ATIO_UNTAGGED: 3755 fcp_task_attr = TCM_SIMPLE_TAG; 3756 break; 3757 default: 3758 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, 3759 "qla_target: unknown task code %x, use ORDERED instead\n", 3760 task_codes); 3761 fcp_task_attr = TCM_ORDERED_TAG; 3762 break; 3763 } 3764 3765 return fcp_task_attr; 3766 } 3767 3768 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *, 3769 uint8_t *); 3770 /* 3771 * Process context for I/O path into tcm_qla2xxx code 3772 */ 3773 static void __qlt_do_work(struct qla_tgt_cmd *cmd) 3774 { 3775 scsi_qla_host_t *vha = cmd->vha; 3776 struct qla_hw_data *ha = vha->hw; 3777 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3778 struct qla_tgt_sess *sess = cmd->sess; 3779 struct atio_from_isp *atio = &cmd->atio; 3780 unsigned char *cdb; 3781 unsigned long flags; 3782 uint32_t data_length; 3783 int ret, fcp_task_attr, data_dir, bidi = 0; 3784 3785 cmd->cmd_in_wq = 0; 3786 cmd->cmd_flags |= BIT_1; 3787 if (tgt->tgt_stop) 3788 goto out_term; 3789 3790 if (cmd->aborted) { 3791 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, 3792 "cmd with tag %u is aborted\n", 3793 cmd->atio.u.isp24.exchange_addr); 3794 goto out_term; 3795 } 3796 3797 spin_lock_init(&cmd->cmd_lock); 3798 cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; 3799 cmd->se_cmd.tag = atio->u.isp24.exchange_addr; 3800 cmd->unpacked_lun = scsilun_to_int( 3801 (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); 3802 3803 if (atio->u.isp24.fcp_cmnd.rddata && 3804 atio->u.isp24.fcp_cmnd.wrdata) { 3805 bidi = 1; 3806 data_dir = DMA_TO_DEVICE; 3807 } else if (atio->u.isp24.fcp_cmnd.rddata) 3808 data_dir = DMA_FROM_DEVICE; 3809 else if (atio->u.isp24.fcp_cmnd.wrdata) 3810 data_dir = DMA_TO_DEVICE; 3811 else 3812 data_dir = DMA_NONE; 3813 3814 fcp_task_attr = qlt_get_fcp_task_attr(vha, 3815 atio->u.isp24.fcp_cmnd.task_attr); 3816 data_length = be32_to_cpu(get_unaligned((uint32_t *) 3817 &atio->u.isp24.fcp_cmnd.add_cdb[ 3818 atio->u.isp24.fcp_cmnd.add_cdb_len])); 3819 3820 ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, 3821 fcp_task_attr, data_dir, bidi); 3822 if (ret != 0) 3823 goto out_term; 3824 /* 3825 * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( 3826 */ 3827 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 3828 qlt_put_sess(sess); 3829 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 3830 return; 3831 3832 out_term: 3833 ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); 3834 /* 3835 * cmd has not sent to target yet, so pass NULL as the second 3836 * argument to qlt_send_term_exchange() and free the memory here. 3837 */ 3838 cmd->cmd_flags |= BIT_2; 3839 spin_lock_irqsave(&ha->hardware_lock, flags); 3840 qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0); 3841 3842 qlt_decr_num_pend_cmds(vha); 3843 percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); 3844 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3845 3846 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 3847 qlt_put_sess(sess); 3848 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 3849 } 3850 3851 static void qlt_do_work(struct work_struct *work) 3852 { 3853 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 3854 scsi_qla_host_t *vha = cmd->vha; 3855 unsigned long flags; 3856 3857 spin_lock_irqsave(&vha->cmd_list_lock, flags); 3858 list_del(&cmd->cmd_list); 3859 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 3860 3861 __qlt_do_work(cmd); 3862 } 3863 3864 static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, 3865 struct qla_tgt_sess *sess, 3866 struct atio_from_isp *atio) 3867 { 3868 struct se_session *se_sess = sess->se_sess; 3869 struct qla_tgt_cmd *cmd; 3870 int tag; 3871 3872 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 3873 if (tag < 0) 3874 return NULL; 3875 3876 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 3877 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 3878 3879 memcpy(&cmd->atio, atio, sizeof(*atio)); 3880 cmd->state = QLA_TGT_STATE_NEW; 3881 cmd->tgt = vha->vha_tgt.qla_tgt; 3882 qlt_incr_num_pend_cmds(vha); 3883 cmd->vha = vha; 3884 cmd->se_cmd.map_tag = tag; 3885 cmd->sess = sess; 3886 cmd->loop_id = sess->loop_id; 3887 cmd->conf_compl_supported = sess->conf_compl_supported; 3888 3889 cmd->cmd_flags = 0; 3890 cmd->jiffies_at_alloc = get_jiffies_64(); 3891 3892 cmd->reset_count = vha->hw->chip_reset; 3893 3894 return cmd; 3895 } 3896 3897 static void qlt_send_busy(struct scsi_qla_host *, struct atio_from_isp *, 3898 uint16_t); 3899 3900 static void qlt_create_sess_from_atio(struct work_struct *work) 3901 { 3902 struct qla_tgt_sess_op *op = container_of(work, 3903 struct qla_tgt_sess_op, work); 3904 scsi_qla_host_t *vha = op->vha; 3905 struct qla_hw_data *ha = vha->hw; 3906 struct qla_tgt_sess *sess; 3907 struct qla_tgt_cmd *cmd; 3908 unsigned long flags; 3909 uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id; 3910 3911 spin_lock_irqsave(&vha->cmd_list_lock, flags); 3912 list_del(&op->cmd_list); 3913 spin_unlock_irqrestore(&vha->cmd_list_lock, flags); 3914 3915 if (op->aborted) { 3916 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083, 3917 "sess_op with tag %u is aborted\n", 3918 op->atio.u.isp24.exchange_addr); 3919 goto out_term; 3920 } 3921 3922 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, 3923 "qla_target(%d): Unable to find wwn login" 3924 " (s_id %x:%x:%x), trying to create it manually\n", 3925 vha->vp_idx, s_id[0], s_id[1], s_id[2]); 3926 3927 if (op->atio.u.raw.entry_count > 1) { 3928 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, 3929 "Dropping multy entry atio %p\n", &op->atio); 3930 goto out_term; 3931 } 3932 3933 sess = qlt_make_local_sess(vha, s_id); 3934 /* sess has an extra creation ref. */ 3935 3936 if (!sess) 3937 goto out_term; 3938 /* 3939 * Now obtain a pre-allocated session tag using the original op->atio 3940 * packet header, and dispatch into __qlt_do_work() using the existing 3941 * process context. 3942 */ 3943 cmd = qlt_get_tag(vha, sess, &op->atio); 3944 if (!cmd) { 3945 spin_lock_irqsave(&ha->hardware_lock, flags); 3946 qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY); 3947 qlt_put_sess(sess); 3948 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3949 kfree(op); 3950 return; 3951 } 3952 /* 3953 * __qlt_do_work() will call qlt_put_sess() to release 3954 * the extra reference taken above by qlt_make_local_sess() 3955 */ 3956 __qlt_do_work(cmd); 3957 kfree(op); 3958 return; 3959 3960 out_term: 3961 spin_lock_irqsave(&ha->hardware_lock, flags); 3962 qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0); 3963 spin_unlock_irqrestore(&ha->hardware_lock, flags); 3964 kfree(op); 3965 3966 } 3967 3968 /* ha->hardware_lock supposed to be held on entry */ 3969 static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, 3970 struct atio_from_isp *atio) 3971 { 3972 struct qla_hw_data *ha = vha->hw; 3973 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 3974 struct qla_tgt_sess *sess; 3975 struct qla_tgt_cmd *cmd; 3976 3977 if (unlikely(tgt->tgt_stop)) { 3978 ql_dbg(ql_dbg_io, vha, 0x3061, 3979 "New command while device %p is shutting down\n", tgt); 3980 return -EFAULT; 3981 } 3982 3983 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); 3984 if (unlikely(!sess)) { 3985 struct qla_tgt_sess_op *op = kzalloc(sizeof(struct qla_tgt_sess_op), 3986 GFP_ATOMIC); 3987 if (!op) 3988 return -ENOMEM; 3989 3990 memcpy(&op->atio, atio, sizeof(*atio)); 3991 op->vha = vha; 3992 3993 spin_lock(&vha->cmd_list_lock); 3994 list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list); 3995 spin_unlock(&vha->cmd_list_lock); 3996 3997 INIT_WORK(&op->work, qlt_create_sess_from_atio); 3998 queue_work(qla_tgt_wq, &op->work); 3999 return 0; 4000 } 4001 4002 /* Another WWN used to have our s_id. Our PLOGI scheduled its 4003 * session deletion, but it's still in sess_del_work wq */ 4004 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 4005 ql_dbg(ql_dbg_io, vha, 0x3061, 4006 "New command while old session %p is being deleted\n", 4007 sess); 4008 return -EFAULT; 4009 } 4010 4011 /* 4012 * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. 4013 */ 4014 kref_get(&sess->sess_kref); 4015 4016 cmd = qlt_get_tag(vha, sess, atio); 4017 if (!cmd) { 4018 ql_dbg(ql_dbg_io, vha, 0x3062, 4019 "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); 4020 qlt_put_sess(sess); 4021 return -ENOMEM; 4022 } 4023 4024 cmd->cmd_in_wq = 1; 4025 cmd->cmd_flags |= BIT_0; 4026 cmd->se_cmd.cpuid = ha->msix_count ? 4027 ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND; 4028 4029 spin_lock(&vha->cmd_list_lock); 4030 list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); 4031 spin_unlock(&vha->cmd_list_lock); 4032 4033 INIT_WORK(&cmd->work, qlt_do_work); 4034 if (ha->msix_count) { 4035 if (cmd->atio.u.isp24.fcp_cmnd.rddata) 4036 queue_work_on(smp_processor_id(), qla_tgt_wq, 4037 &cmd->work); 4038 else 4039 queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, 4040 &cmd->work); 4041 } else { 4042 queue_work(qla_tgt_wq, &cmd->work); 4043 } 4044 return 0; 4045 4046 } 4047 4048 /* ha->hardware_lock supposed to be held on entry */ 4049 static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, 4050 int fn, void *iocb, int flags) 4051 { 4052 struct scsi_qla_host *vha = sess->vha; 4053 struct qla_hw_data *ha = vha->hw; 4054 struct qla_tgt_mgmt_cmd *mcmd; 4055 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4056 int res; 4057 uint8_t tmr_func; 4058 4059 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4060 if (!mcmd) { 4061 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, 4062 "qla_target(%d): Allocation of management " 4063 "command failed, some commands and their data could " 4064 "leak\n", vha->vp_idx); 4065 return -ENOMEM; 4066 } 4067 memset(mcmd, 0, sizeof(*mcmd)); 4068 mcmd->sess = sess; 4069 4070 if (iocb) { 4071 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4072 sizeof(mcmd->orig_iocb.imm_ntfy)); 4073 } 4074 mcmd->tmr_func = fn; 4075 mcmd->flags = flags; 4076 mcmd->reset_count = vha->hw->chip_reset; 4077 4078 switch (fn) { 4079 case QLA_TGT_CLEAR_ACA: 4080 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000, 4081 "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx); 4082 tmr_func = TMR_CLEAR_ACA; 4083 break; 4084 4085 case QLA_TGT_TARGET_RESET: 4086 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001, 4087 "qla_target(%d): TARGET_RESET received\n", 4088 sess->vha->vp_idx); 4089 tmr_func = TMR_TARGET_WARM_RESET; 4090 break; 4091 4092 case QLA_TGT_LUN_RESET: 4093 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002, 4094 "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx); 4095 tmr_func = TMR_LUN_RESET; 4096 abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); 4097 break; 4098 4099 case QLA_TGT_CLEAR_TS: 4100 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003, 4101 "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx); 4102 tmr_func = TMR_CLEAR_TASK_SET; 4103 break; 4104 4105 case QLA_TGT_ABORT_TS: 4106 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004, 4107 "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx); 4108 tmr_func = TMR_ABORT_TASK_SET; 4109 break; 4110 #if 0 4111 case QLA_TGT_ABORT_ALL: 4112 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005, 4113 "qla_target(%d): Doing ABORT_ALL_TASKS\n", 4114 sess->vha->vp_idx); 4115 tmr_func = 0; 4116 break; 4117 4118 case QLA_TGT_ABORT_ALL_SESS: 4119 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006, 4120 "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n", 4121 sess->vha->vp_idx); 4122 tmr_func = 0; 4123 break; 4124 4125 case QLA_TGT_NEXUS_LOSS_SESS: 4126 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007, 4127 "qla_target(%d): Doing NEXUS_LOSS_SESS\n", 4128 sess->vha->vp_idx); 4129 tmr_func = 0; 4130 break; 4131 4132 case QLA_TGT_NEXUS_LOSS: 4133 ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008, 4134 "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx); 4135 tmr_func = 0; 4136 break; 4137 #endif 4138 default: 4139 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a, 4140 "qla_target(%d): Unknown task mgmt fn 0x%x\n", 4141 sess->vha->vp_idx, fn); 4142 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4143 return -ENOSYS; 4144 } 4145 4146 res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0); 4147 if (res != 0) { 4148 ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, 4149 "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", 4150 sess->vha->vp_idx, res); 4151 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4152 return -EFAULT; 4153 } 4154 4155 return 0; 4156 } 4157 4158 /* ha->hardware_lock supposed to be held on entry */ 4159 static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) 4160 { 4161 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4162 struct qla_hw_data *ha = vha->hw; 4163 struct qla_tgt *tgt; 4164 struct qla_tgt_sess *sess; 4165 uint32_t lun, unpacked_lun; 4166 int fn; 4167 unsigned long flags; 4168 4169 tgt = vha->vha_tgt.qla_tgt; 4170 4171 lun = a->u.isp24.fcp_cmnd.lun; 4172 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 4173 4174 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4175 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 4176 a->u.isp24.fcp_hdr.s_id); 4177 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4178 4179 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 4180 4181 if (!sess) { 4182 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, 4183 "qla_target(%d): task mgmt fn 0x%x for " 4184 "non-existant session\n", vha->vp_idx, fn); 4185 return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, 4186 sizeof(struct atio_from_isp)); 4187 } 4188 4189 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) 4190 return -EFAULT; 4191 4192 return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 4193 } 4194 4195 /* ha->hardware_lock supposed to be held on entry */ 4196 static int __qlt_abort_task(struct scsi_qla_host *vha, 4197 struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess) 4198 { 4199 struct atio_from_isp *a = (struct atio_from_isp *)iocb; 4200 struct qla_hw_data *ha = vha->hw; 4201 struct qla_tgt_mgmt_cmd *mcmd; 4202 uint32_t lun, unpacked_lun; 4203 int rc; 4204 4205 mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); 4206 if (mcmd == NULL) { 4207 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, 4208 "qla_target(%d): %s: Allocation of ABORT cmd failed\n", 4209 vha->vp_idx, __func__); 4210 return -ENOMEM; 4211 } 4212 memset(mcmd, 0, sizeof(*mcmd)); 4213 4214 mcmd->sess = sess; 4215 memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, 4216 sizeof(mcmd->orig_iocb.imm_ntfy)); 4217 4218 lun = a->u.isp24.fcp_cmnd.lun; 4219 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 4220 mcmd->reset_count = vha->hw->chip_reset; 4221 4222 rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK, 4223 le16_to_cpu(iocb->u.isp2x.seq_id)); 4224 if (rc != 0) { 4225 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, 4226 "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", 4227 vha->vp_idx, rc); 4228 mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); 4229 return -EFAULT; 4230 } 4231 4232 return 0; 4233 } 4234 4235 /* ha->hardware_lock supposed to be held on entry */ 4236 static int qlt_abort_task(struct scsi_qla_host *vha, 4237 struct imm_ntfy_from_isp *iocb) 4238 { 4239 struct qla_hw_data *ha = vha->hw; 4240 struct qla_tgt_sess *sess; 4241 int loop_id; 4242 unsigned long flags; 4243 4244 loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); 4245 4246 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 4247 sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); 4248 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 4249 4250 if (sess == NULL) { 4251 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, 4252 "qla_target(%d): task abort for unexisting " 4253 "session\n", vha->vp_idx); 4254 return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, 4255 QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); 4256 } 4257 4258 return __qlt_abort_task(vha, iocb, sess); 4259 } 4260 4261 void qlt_logo_completion_handler(fc_port_t *fcport, int rc) 4262 { 4263 if (fcport->tgt_session) { 4264 if (rc != MBS_COMMAND_COMPLETE) { 4265 ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, 4266 "%s: se_sess %p / sess %p from" 4267 " port %8phC loop_id %#04x s_id %02x:%02x:%02x" 4268 " LOGO failed: %#x\n", 4269 __func__, 4270 fcport->tgt_session->se_sess, 4271 fcport->tgt_session, 4272 fcport->port_name, fcport->loop_id, 4273 fcport->d_id.b.domain, fcport->d_id.b.area, 4274 fcport->d_id.b.al_pa, rc); 4275 } 4276 4277 fcport->tgt_session->logout_completed = 1; 4278 } 4279 } 4280 4281 /* 4282 * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) 4283 * 4284 * Schedules sessions with matching port_id/loop_id but different wwn for 4285 * deletion. Returns existing session with matching wwn if present. 4286 * Null otherwise. 4287 */ 4288 static struct qla_tgt_sess * 4289 qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn, 4290 port_id_t port_id, uint16_t loop_id, struct qla_tgt_sess **conflict_sess) 4291 { 4292 struct qla_tgt_sess *sess = NULL, *other_sess; 4293 uint64_t other_wwn; 4294 4295 *conflict_sess = NULL; 4296 4297 list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) { 4298 4299 other_wwn = wwn_to_u64(other_sess->port_name); 4300 4301 if (wwn == other_wwn) { 4302 WARN_ON(sess); 4303 sess = other_sess; 4304 continue; 4305 } 4306 4307 /* find other sess with nport_id collision */ 4308 if (port_id.b24 == other_sess->s_id.b24) { 4309 if (loop_id != other_sess->loop_id) { 4310 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c, 4311 "Invalidating sess %p loop_id %d wwn %llx.\n", 4312 other_sess, other_sess->loop_id, other_wwn); 4313 4314 /* 4315 * logout_on_delete is set by default, but another 4316 * session that has the same s_id/loop_id combo 4317 * might have cleared it when requested this session 4318 * deletion, so don't touch it 4319 */ 4320 qlt_schedule_sess_for_deletion(other_sess, true); 4321 } else { 4322 /* 4323 * Another wwn used to have our s_id/loop_id 4324 * kill the session, but don't free the loop_id 4325 */ 4326 other_sess->keep_nport_handle = 1; 4327 *conflict_sess = other_sess; 4328 qlt_schedule_sess_for_deletion(other_sess, 4329 true); 4330 } 4331 continue; 4332 } 4333 4334 /* find other sess with nport handle collision */ 4335 if (loop_id == other_sess->loop_id) { 4336 ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d, 4337 "Invalidating sess %p loop_id %d wwn %llx.\n", 4338 other_sess, other_sess->loop_id, other_wwn); 4339 4340 /* Same loop_id but different s_id 4341 * Ok to kill and logout */ 4342 qlt_schedule_sess_for_deletion(other_sess, true); 4343 } 4344 } 4345 4346 return sess; 4347 } 4348 4349 /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ 4350 static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) 4351 { 4352 struct qla_tgt_sess_op *op; 4353 struct qla_tgt_cmd *cmd; 4354 uint32_t key; 4355 int count = 0; 4356 4357 key = (((u32)s_id->b.domain << 16) | 4358 ((u32)s_id->b.area << 8) | 4359 ((u32)s_id->b.al_pa)); 4360 4361 spin_lock(&vha->cmd_list_lock); 4362 list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) { 4363 uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); 4364 if (op_key == key) { 4365 op->aborted = true; 4366 count++; 4367 } 4368 } 4369 list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { 4370 uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); 4371 if (cmd_key == key) { 4372 cmd->aborted = 1; 4373 count++; 4374 } 4375 } 4376 spin_unlock(&vha->cmd_list_lock); 4377 4378 return count; 4379 } 4380 4381 /* 4382 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 4383 */ 4384 static int qlt_24xx_handle_els(struct scsi_qla_host *vha, 4385 struct imm_ntfy_from_isp *iocb) 4386 { 4387 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4388 struct qla_hw_data *ha = vha->hw; 4389 struct qla_tgt_sess *sess = NULL, *conflict_sess = NULL; 4390 uint64_t wwn; 4391 port_id_t port_id; 4392 uint16_t loop_id; 4393 uint16_t wd3_lo; 4394 int res = 0; 4395 qlt_plogi_ack_t *pla; 4396 unsigned long flags; 4397 4398 wwn = wwn_to_u64(iocb->u.isp24.port_name); 4399 4400 port_id.b.domain = iocb->u.isp24.port_id[2]; 4401 port_id.b.area = iocb->u.isp24.port_id[1]; 4402 port_id.b.al_pa = iocb->u.isp24.port_id[0]; 4403 port_id.b.rsvd_1 = 0; 4404 4405 loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); 4406 4407 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026, 4408 "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n", 4409 vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode); 4410 4411 /* res = 1 means ack at the end of thread 4412 * res = 0 means ack async/later. 4413 */ 4414 switch (iocb->u.isp24.status_subcode) { 4415 case ELS_PLOGI: 4416 4417 /* Mark all stale commands in qla_tgt_wq for deletion */ 4418 abort_cmds_for_s_id(vha, &port_id); 4419 4420 if (wwn) { 4421 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4422 sess = qlt_find_sess_invalidate_other(tgt, wwn, 4423 port_id, loop_id, &conflict_sess); 4424 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4425 } 4426 4427 if (IS_SW_RESV_ADDR(port_id) || (!sess && !conflict_sess)) { 4428 res = 1; 4429 break; 4430 } 4431 4432 pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); 4433 if (!pla) { 4434 qlt_send_term_imm_notif(vha, iocb, 1); 4435 4436 res = 0; 4437 break; 4438 } 4439 4440 res = 0; 4441 4442 if (conflict_sess) 4443 qlt_plogi_ack_link(vha, pla, conflict_sess, 4444 QLT_PLOGI_LINK_CONFLICT); 4445 4446 if (!sess) 4447 break; 4448 4449 qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); 4450 /* 4451 * Under normal circumstances we want to release nport handle 4452 * during LOGO process to avoid nport handle leaks inside FW. 4453 * The exception is when LOGO is done while another PLOGI with 4454 * the same nport handle is waiting as might be the case here. 4455 * Note: there is always a possibily of a race where session 4456 * deletion has already started for other reasons (e.g. ACL 4457 * removal) and now PLOGI arrives: 4458 * 1. if PLOGI arrived in FW after nport handle has been freed, 4459 * FW must have assigned this PLOGI a new/same handle and we 4460 * can proceed ACK'ing it as usual when session deletion 4461 * completes. 4462 * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT 4463 * bit reached it, the handle has now been released. We'll 4464 * get an error when we ACK this PLOGI. Nothing will be sent 4465 * back to initiator. Initiator should eventually retry 4466 * PLOGI and situation will correct itself. 4467 */ 4468 sess->keep_nport_handle = ((sess->loop_id == loop_id) && 4469 (sess->s_id.b24 == port_id.b24)); 4470 qlt_schedule_sess_for_deletion(sess, true); 4471 break; 4472 4473 case ELS_PRLI: 4474 wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); 4475 4476 if (wwn) { 4477 spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); 4478 sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id, 4479 loop_id, &conflict_sess); 4480 spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); 4481 } 4482 4483 if (conflict_sess) { 4484 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, 4485 "PRLI with conflicting sess %p port %8phC\n", 4486 conflict_sess, conflict_sess->port_name); 4487 qlt_send_term_imm_notif(vha, iocb, 1); 4488 res = 0; 4489 break; 4490 } 4491 4492 if (sess != NULL) { 4493 if (sess->deleted) { 4494 /* 4495 * Impatient initiator sent PRLI before last 4496 * PLOGI could finish. Will force him to re-try, 4497 * while last one finishes. 4498 */ 4499 ql_log(ql_log_warn, sess->vha, 0xf095, 4500 "sess %p PRLI received, before plogi ack.\n", 4501 sess); 4502 qlt_send_term_imm_notif(vha, iocb, 1); 4503 res = 0; 4504 break; 4505 } 4506 4507 /* 4508 * This shouldn't happen under normal circumstances, 4509 * since we have deleted the old session during PLOGI 4510 */ 4511 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, 4512 "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", 4513 sess->loop_id, sess, iocb->u.isp24.nport_handle); 4514 4515 sess->local = 0; 4516 sess->loop_id = loop_id; 4517 sess->s_id = port_id; 4518 4519 if (wd3_lo & BIT_7) 4520 sess->conf_compl_supported = 1; 4521 4522 } 4523 res = 1; /* send notify ack */ 4524 4525 /* Make session global (not used in fabric mode) */ 4526 if (ha->current_topology != ISP_CFG_F) { 4527 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); 4528 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); 4529 qla2xxx_wake_dpc(vha); 4530 } else { 4531 /* todo: else - create sess here. */ 4532 res = 1; /* send notify ack */ 4533 } 4534 4535 break; 4536 4537 case ELS_LOGO: 4538 case ELS_PRLO: 4539 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4540 break; 4541 case ELS_PDISC: 4542 case ELS_ADISC: 4543 { 4544 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4545 if (tgt->link_reinit_iocb_pending) { 4546 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 4547 0, 0, 0, 0, 0, 0); 4548 tgt->link_reinit_iocb_pending = 0; 4549 } 4550 res = 1; /* send notify ack */ 4551 break; 4552 } 4553 4554 case ELS_FLOGI: /* should never happen */ 4555 default: 4556 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, 4557 "qla_target(%d): Unsupported ELS command %x " 4558 "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); 4559 res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); 4560 break; 4561 } 4562 4563 return res; 4564 } 4565 4566 static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset) 4567 { 4568 #if 1 4569 /* 4570 * FIXME: Reject non zero SRR relative offset until we can test 4571 * this code properly. 4572 */ 4573 pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset); 4574 return -1; 4575 #else 4576 struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL; 4577 size_t first_offset = 0, rem_offset = offset, tmp = 0; 4578 int i, sg_srr_cnt, bufflen = 0; 4579 4580 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023, 4581 "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, " 4582 "cmd->sg_cnt: %u, direction: %d\n", 4583 cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 4584 4585 if (!cmd->sg || !cmd->sg_cnt) { 4586 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055, 4587 "Missing cmd->sg or zero cmd->sg_cnt in" 4588 " qla_tgt_set_data_offset\n"); 4589 return -EINVAL; 4590 } 4591 /* 4592 * Walk the current cmd->sg list until we locate the new sg_srr_start 4593 */ 4594 for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) { 4595 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024, 4596 "sg[%d]: %p page: %p, length: %d, offset: %d\n", 4597 i, sg, sg_page(sg), sg->length, sg->offset); 4598 4599 if ((sg->length + tmp) > offset) { 4600 first_offset = rem_offset; 4601 sg_srr_start = sg; 4602 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025, 4603 "Found matching sg[%d], using %p as sg_srr_start, " 4604 "and using first_offset: %zu\n", i, sg, 4605 first_offset); 4606 break; 4607 } 4608 tmp += sg->length; 4609 rem_offset -= sg->length; 4610 } 4611 4612 if (!sg_srr_start) { 4613 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056, 4614 "Unable to locate sg_srr_start for offset: %u\n", offset); 4615 return -EINVAL; 4616 } 4617 sg_srr_cnt = (cmd->sg_cnt - i); 4618 4619 sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL); 4620 if (!sg_srr) { 4621 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057, 4622 "Unable to allocate sgp\n"); 4623 return -ENOMEM; 4624 } 4625 sg_init_table(sg_srr, sg_srr_cnt); 4626 sgp = &sg_srr[0]; 4627 /* 4628 * Walk the remaining list for sg_srr_start, mapping to the newly 4629 * allocated sg_srr taking first_offset into account. 4630 */ 4631 for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) { 4632 if (first_offset) { 4633 sg_set_page(sgp, sg_page(sg), 4634 (sg->length - first_offset), first_offset); 4635 first_offset = 0; 4636 } else { 4637 sg_set_page(sgp, sg_page(sg), sg->length, 0); 4638 } 4639 bufflen += sgp->length; 4640 4641 sgp = sg_next(sgp); 4642 if (!sgp) 4643 break; 4644 } 4645 4646 cmd->sg = sg_srr; 4647 cmd->sg_cnt = sg_srr_cnt; 4648 cmd->bufflen = bufflen; 4649 cmd->offset += offset; 4650 cmd->free_sg = 1; 4651 4652 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg); 4653 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n", 4654 cmd->sg_cnt); 4655 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n", 4656 cmd->bufflen); 4657 ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n", 4658 cmd->offset); 4659 4660 if (cmd->sg_cnt < 0) 4661 BUG(); 4662 4663 if (cmd->bufflen < 0) 4664 BUG(); 4665 4666 return 0; 4667 #endif 4668 } 4669 4670 static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd, 4671 uint32_t srr_rel_offs, int *xmit_type) 4672 { 4673 int res = 0, rel_offs; 4674 4675 rel_offs = srr_rel_offs - cmd->offset; 4676 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d", 4677 srr_rel_offs, rel_offs); 4678 4679 *xmit_type = QLA_TGT_XMIT_ALL; 4680 4681 if (rel_offs < 0) { 4682 ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062, 4683 "qla_target(%d): SRR rel_offs (%d) < 0", 4684 cmd->vha->vp_idx, rel_offs); 4685 res = -1; 4686 } else if (rel_offs == cmd->bufflen) 4687 *xmit_type = QLA_TGT_XMIT_STATUS; 4688 else if (rel_offs > 0) 4689 res = qlt_set_data_offset(cmd, rel_offs); 4690 4691 return res; 4692 } 4693 4694 /* No locks, thread context */ 4695 static void qlt_handle_srr(struct scsi_qla_host *vha, 4696 struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm) 4697 { 4698 struct imm_ntfy_from_isp *ntfy = 4699 (struct imm_ntfy_from_isp *)&imm->imm_ntfy; 4700 struct qla_hw_data *ha = vha->hw; 4701 struct qla_tgt_cmd *cmd = sctio->cmd; 4702 struct se_cmd *se_cmd = &cmd->se_cmd; 4703 unsigned long flags; 4704 int xmit_type = 0, resp = 0; 4705 uint32_t offset; 4706 uint16_t srr_ui; 4707 4708 offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs); 4709 srr_ui = ntfy->u.isp24.srr_ui; 4710 4711 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n", 4712 cmd, srr_ui); 4713 4714 switch (srr_ui) { 4715 case SRR_IU_STATUS: 4716 spin_lock_irqsave(&ha->hardware_lock, flags); 4717 qlt_send_notify_ack(vha, ntfy, 4718 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 4719 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4720 xmit_type = QLA_TGT_XMIT_STATUS; 4721 resp = 1; 4722 break; 4723 case SRR_IU_DATA_IN: 4724 if (!cmd->sg || !cmd->sg_cnt) { 4725 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063, 4726 "Unable to process SRR_IU_DATA_IN due to" 4727 " missing cmd->sg, state: %d\n", cmd->state); 4728 dump_stack(); 4729 goto out_reject; 4730 } 4731 if (se_cmd->scsi_status != 0) { 4732 ql_dbg(ql_dbg_tgt, vha, 0xe02a, 4733 "Rejecting SRR_IU_DATA_IN with non GOOD " 4734 "scsi_status\n"); 4735 goto out_reject; 4736 } 4737 cmd->bufflen = se_cmd->data_length; 4738 4739 if (qlt_has_data(cmd)) { 4740 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) 4741 goto out_reject; 4742 spin_lock_irqsave(&ha->hardware_lock, flags); 4743 qlt_send_notify_ack(vha, ntfy, 4744 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 4745 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4746 resp = 1; 4747 } else { 4748 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064, 4749 "qla_target(%d): SRR for in data for cmd without them (tag %lld, SCSI status %d), reject", 4750 vha->vp_idx, se_cmd->tag, 4751 cmd->se_cmd.scsi_status); 4752 goto out_reject; 4753 } 4754 break; 4755 case SRR_IU_DATA_OUT: 4756 if (!cmd->sg || !cmd->sg_cnt) { 4757 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065, 4758 "Unable to process SRR_IU_DATA_OUT due to" 4759 " missing cmd->sg\n"); 4760 dump_stack(); 4761 goto out_reject; 4762 } 4763 if (se_cmd->scsi_status != 0) { 4764 ql_dbg(ql_dbg_tgt, vha, 0xe02b, 4765 "Rejecting SRR_IU_DATA_OUT" 4766 " with non GOOD scsi_status\n"); 4767 goto out_reject; 4768 } 4769 cmd->bufflen = se_cmd->data_length; 4770 4771 if (qlt_has_data(cmd)) { 4772 if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) 4773 goto out_reject; 4774 spin_lock_irqsave(&ha->hardware_lock, flags); 4775 qlt_send_notify_ack(vha, ntfy, 4776 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); 4777 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4778 if (xmit_type & QLA_TGT_XMIT_DATA) { 4779 cmd->cmd_flags |= BIT_8; 4780 qlt_rdy_to_xfer(cmd); 4781 } 4782 } else { 4783 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066, 4784 "qla_target(%d): SRR for out data for cmd without them (tag %lld, SCSI status %d), reject", 4785 vha->vp_idx, se_cmd->tag, cmd->se_cmd.scsi_status); 4786 goto out_reject; 4787 } 4788 break; 4789 default: 4790 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067, 4791 "qla_target(%d): Unknown srr_ui value %x", 4792 vha->vp_idx, srr_ui); 4793 goto out_reject; 4794 } 4795 4796 /* Transmit response in case of status and data-in cases */ 4797 if (resp) { 4798 cmd->cmd_flags |= BIT_7; 4799 qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 4800 } 4801 4802 return; 4803 4804 out_reject: 4805 spin_lock_irqsave(&ha->hardware_lock, flags); 4806 qlt_send_notify_ack(vha, ntfy, 0, 0, 0, 4807 NOTIFY_ACK_SRR_FLAGS_REJECT, 4808 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 4809 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 4810 if (cmd->state == QLA_TGT_STATE_NEED_DATA) { 4811 cmd->state = QLA_TGT_STATE_DATA_IN; 4812 dump_stack(); 4813 } else { 4814 cmd->cmd_flags |= BIT_9; 4815 qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); 4816 } 4817 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4818 } 4819 4820 static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha, 4821 struct qla_tgt_srr_imm *imm, int ha_locked) 4822 { 4823 struct qla_hw_data *ha = vha->hw; 4824 unsigned long flags = 0; 4825 4826 #ifndef __CHECKER__ 4827 if (!ha_locked) 4828 spin_lock_irqsave(&ha->hardware_lock, flags); 4829 #endif 4830 4831 qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0, 4832 NOTIFY_ACK_SRR_FLAGS_REJECT, 4833 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 4834 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 4835 4836 #ifndef __CHECKER__ 4837 if (!ha_locked) 4838 spin_unlock_irqrestore(&ha->hardware_lock, flags); 4839 #endif 4840 4841 kfree(imm); 4842 } 4843 4844 static void qlt_handle_srr_work(struct work_struct *work) 4845 { 4846 struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work); 4847 struct scsi_qla_host *vha = tgt->vha; 4848 struct qla_tgt_srr_ctio *sctio; 4849 unsigned long flags; 4850 4851 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n", 4852 tgt); 4853 4854 restart: 4855 spin_lock_irqsave(&tgt->srr_lock, flags); 4856 list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) { 4857 struct qla_tgt_srr_imm *imm, *i, *ti; 4858 struct qla_tgt_cmd *cmd; 4859 struct se_cmd *se_cmd; 4860 4861 imm = NULL; 4862 list_for_each_entry_safe(i, ti, &tgt->srr_imm_list, 4863 srr_list_entry) { 4864 if (i->srr_id == sctio->srr_id) { 4865 list_del(&i->srr_list_entry); 4866 if (imm) { 4867 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068, 4868 "qla_target(%d): There must be " 4869 "only one IMM SRR per CTIO SRR " 4870 "(IMM SRR %p, id %d, CTIO %p\n", 4871 vha->vp_idx, i, i->srr_id, sctio); 4872 qlt_reject_free_srr_imm(tgt->vha, i, 0); 4873 } else 4874 imm = i; 4875 } 4876 } 4877 4878 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a, 4879 "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio, 4880 sctio->srr_id); 4881 4882 if (imm == NULL) { 4883 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b, 4884 "Not found matching IMM for SRR CTIO (id %d)\n", 4885 sctio->srr_id); 4886 continue; 4887 } else 4888 list_del(&sctio->srr_list_entry); 4889 4890 spin_unlock_irqrestore(&tgt->srr_lock, flags); 4891 4892 cmd = sctio->cmd; 4893 /* 4894 * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow 4895 * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in() 4896 * logic.. 4897 */ 4898 cmd->offset = 0; 4899 if (cmd->free_sg) { 4900 kfree(cmd->sg); 4901 cmd->sg = NULL; 4902 cmd->free_sg = 0; 4903 } 4904 se_cmd = &cmd->se_cmd; 4905 4906 cmd->sg_cnt = se_cmd->t_data_nents; 4907 cmd->sg = se_cmd->t_data_sg; 4908 4909 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c, 4910 "SRR cmd %p (se_cmd %p, tag %lld, op %x), sg_cnt=%d, offset=%d", 4911 cmd, &cmd->se_cmd, se_cmd->tag, se_cmd->t_task_cdb ? 4912 se_cmd->t_task_cdb[0] : 0, cmd->sg_cnt, cmd->offset); 4913 4914 qlt_handle_srr(vha, sctio, imm); 4915 4916 kfree(imm); 4917 kfree(sctio); 4918 goto restart; 4919 } 4920 spin_unlock_irqrestore(&tgt->srr_lock, flags); 4921 } 4922 4923 /* ha->hardware_lock supposed to be held on entry */ 4924 static void qlt_prepare_srr_imm(struct scsi_qla_host *vha, 4925 struct imm_ntfy_from_isp *iocb) 4926 { 4927 struct qla_tgt_srr_imm *imm; 4928 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 4929 struct qla_tgt_srr_ctio *sctio; 4930 4931 tgt->imm_srr_id++; 4932 4933 ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n", 4934 vha->vp_idx); 4935 4936 imm = kzalloc(sizeof(*imm), GFP_ATOMIC); 4937 if (imm != NULL) { 4938 memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy)); 4939 4940 /* IRQ is already OFF */ 4941 spin_lock(&tgt->srr_lock); 4942 imm->srr_id = tgt->imm_srr_id; 4943 list_add_tail(&imm->srr_list_entry, 4944 &tgt->srr_imm_list); 4945 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e, 4946 "IMM NTFY SRR %p added (id %d, ui %x)\n", 4947 imm, imm->srr_id, iocb->u.isp24.srr_ui); 4948 if (tgt->imm_srr_id == tgt->ctio_srr_id) { 4949 int found = 0; 4950 list_for_each_entry(sctio, &tgt->srr_ctio_list, 4951 srr_list_entry) { 4952 if (sctio->srr_id == imm->srr_id) { 4953 found = 1; 4954 break; 4955 } 4956 } 4957 if (found) { 4958 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s", 4959 "Scheduling srr work\n"); 4960 schedule_work(&tgt->srr_work); 4961 } else { 4962 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030, 4963 "qla_target(%d): imm_srr_id " 4964 "== ctio_srr_id (%d), but there is no " 4965 "corresponding SRR CTIO, deleting IMM " 4966 "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id, 4967 imm); 4968 list_del(&imm->srr_list_entry); 4969 4970 kfree(imm); 4971 4972 spin_unlock(&tgt->srr_lock); 4973 goto out_reject; 4974 } 4975 } 4976 spin_unlock(&tgt->srr_lock); 4977 } else { 4978 struct qla_tgt_srr_ctio *ts; 4979 4980 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069, 4981 "qla_target(%d): Unable to allocate SRR IMM " 4982 "entry, SRR request will be rejected\n", vha->vp_idx); 4983 4984 /* IRQ is already OFF */ 4985 spin_lock(&tgt->srr_lock); 4986 list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list, 4987 srr_list_entry) { 4988 if (sctio->srr_id == tgt->imm_srr_id) { 4989 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031, 4990 "CTIO SRR %p deleted (id %d)\n", 4991 sctio, sctio->srr_id); 4992 list_del(&sctio->srr_list_entry); 4993 qlt_send_term_exchange(vha, sctio->cmd, 4994 &sctio->cmd->atio, 1, 0); 4995 kfree(sctio); 4996 } 4997 } 4998 spin_unlock(&tgt->srr_lock); 4999 goto out_reject; 5000 } 5001 5002 return; 5003 5004 out_reject: 5005 qlt_send_notify_ack(vha, iocb, 0, 0, 0, 5006 NOTIFY_ACK_SRR_FLAGS_REJECT, 5007 NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, 5008 NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); 5009 } 5010 5011 /* 5012 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5013 */ 5014 static void qlt_handle_imm_notify(struct scsi_qla_host *vha, 5015 struct imm_ntfy_from_isp *iocb) 5016 { 5017 struct qla_hw_data *ha = vha->hw; 5018 uint32_t add_flags = 0; 5019 int send_notify_ack = 1; 5020 uint16_t status; 5021 5022 status = le16_to_cpu(iocb->u.isp2x.status); 5023 switch (status) { 5024 case IMM_NTFY_LIP_RESET: 5025 { 5026 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, 5027 "qla_target(%d): LIP reset (loop %#x), subcode %x\n", 5028 vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), 5029 iocb->u.isp24.status_subcode); 5030 5031 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5032 send_notify_ack = 0; 5033 break; 5034 } 5035 5036 case IMM_NTFY_LIP_LINK_REINIT: 5037 { 5038 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5039 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, 5040 "qla_target(%d): LINK REINIT (loop %#x, " 5041 "subcode %x)\n", vha->vp_idx, 5042 le16_to_cpu(iocb->u.isp24.nport_handle), 5043 iocb->u.isp24.status_subcode); 5044 if (tgt->link_reinit_iocb_pending) { 5045 qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, 5046 0, 0, 0, 0, 0, 0); 5047 } 5048 memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); 5049 tgt->link_reinit_iocb_pending = 1; 5050 /* 5051 * QLogic requires to wait after LINK REINIT for possible 5052 * PDISC or ADISC ELS commands 5053 */ 5054 send_notify_ack = 0; 5055 break; 5056 } 5057 5058 case IMM_NTFY_PORT_LOGOUT: 5059 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, 5060 "qla_target(%d): Port logout (loop " 5061 "%#x, subcode %x)\n", vha->vp_idx, 5062 le16_to_cpu(iocb->u.isp24.nport_handle), 5063 iocb->u.isp24.status_subcode); 5064 5065 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) 5066 send_notify_ack = 0; 5067 /* The sessions will be cleared in the callback, if needed */ 5068 break; 5069 5070 case IMM_NTFY_GLBL_TPRLO: 5071 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, 5072 "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); 5073 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5074 send_notify_ack = 0; 5075 /* The sessions will be cleared in the callback, if needed */ 5076 break; 5077 5078 case IMM_NTFY_PORT_CONFIG: 5079 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, 5080 "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, 5081 status); 5082 if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) 5083 send_notify_ack = 0; 5084 /* The sessions will be cleared in the callback, if needed */ 5085 break; 5086 5087 case IMM_NTFY_GLBL_LOGO: 5088 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, 5089 "qla_target(%d): Link failure detected\n", 5090 vha->vp_idx); 5091 /* I_T nexus loss */ 5092 if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) 5093 send_notify_ack = 0; 5094 break; 5095 5096 case IMM_NTFY_IOCB_OVERFLOW: 5097 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, 5098 "qla_target(%d): Cannot provide requested " 5099 "capability (IOCB overflowed the immediate notify " 5100 "resource count)\n", vha->vp_idx); 5101 break; 5102 5103 case IMM_NTFY_ABORT_TASK: 5104 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, 5105 "qla_target(%d): Abort Task (S %08x I %#x -> " 5106 "L %#x)\n", vha->vp_idx, 5107 le16_to_cpu(iocb->u.isp2x.seq_id), 5108 GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), 5109 le16_to_cpu(iocb->u.isp2x.lun)); 5110 if (qlt_abort_task(vha, iocb) == 0) 5111 send_notify_ack = 0; 5112 break; 5113 5114 case IMM_NTFY_RESOURCE: 5115 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, 5116 "qla_target(%d): Out of resources, host %ld\n", 5117 vha->vp_idx, vha->host_no); 5118 break; 5119 5120 case IMM_NTFY_MSG_RX: 5121 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, 5122 "qla_target(%d): Immediate notify task %x\n", 5123 vha->vp_idx, iocb->u.isp2x.task_flags); 5124 if (qlt_handle_task_mgmt(vha, iocb) == 0) 5125 send_notify_ack = 0; 5126 break; 5127 5128 case IMM_NTFY_ELS: 5129 if (qlt_24xx_handle_els(vha, iocb) == 0) 5130 send_notify_ack = 0; 5131 break; 5132 5133 case IMM_NTFY_SRR: 5134 qlt_prepare_srr_imm(vha, iocb); 5135 send_notify_ack = 0; 5136 break; 5137 5138 default: 5139 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, 5140 "qla_target(%d): Received unknown immediate " 5141 "notify status %x\n", vha->vp_idx, status); 5142 break; 5143 } 5144 5145 if (send_notify_ack) 5146 qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0); 5147 } 5148 5149 /* 5150 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5151 * This function sends busy to ISP 2xxx or 24xx. 5152 */ 5153 static int __qlt_send_busy(struct scsi_qla_host *vha, 5154 struct atio_from_isp *atio, uint16_t status) 5155 { 5156 struct ctio7_to_24xx *ctio24; 5157 struct qla_hw_data *ha = vha->hw; 5158 request_t *pkt; 5159 struct qla_tgt_sess *sess = NULL; 5160 unsigned long flags; 5161 5162 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5163 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5164 atio->u.isp24.fcp_hdr.s_id); 5165 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5166 if (!sess) { 5167 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5168 return 0; 5169 } 5170 /* Sending marker isn't necessary, since we called from ISR */ 5171 5172 pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); 5173 if (!pkt) { 5174 ql_dbg(ql_dbg_io, vha, 0x3063, 5175 "qla_target(%d): %s failed: unable to allocate " 5176 "request packet", vha->vp_idx, __func__); 5177 return -ENOMEM; 5178 } 5179 5180 vha->tgt_counters.num_q_full_sent++; 5181 pkt->entry_count = 1; 5182 pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; 5183 5184 ctio24 = (struct ctio7_to_24xx *)pkt; 5185 ctio24->entry_type = CTIO_TYPE7; 5186 ctio24->nport_handle = sess->loop_id; 5187 ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); 5188 ctio24->vp_index = vha->vp_idx; 5189 ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; 5190 ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; 5191 ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; 5192 ctio24->exchange_addr = atio->u.isp24.exchange_addr; 5193 ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | 5194 cpu_to_le16( 5195 CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | 5196 CTIO7_FLAGS_DONT_RET_CTIO); 5197 /* 5198 * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, 5199 * if the explicit conformation is used. 5200 */ 5201 ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); 5202 ctio24->u.status1.scsi_status = cpu_to_le16(status); 5203 /* Memory Barrier */ 5204 wmb(); 5205 qla2x00_start_iocbs(vha, vha->req); 5206 return 0; 5207 } 5208 5209 /* 5210 * This routine is used to allocate a command for either a QFull condition 5211 * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go 5212 * out previously. 5213 */ 5214 static void 5215 qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, 5216 struct atio_from_isp *atio, uint16_t status, int qfull) 5217 { 5218 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5219 struct qla_hw_data *ha = vha->hw; 5220 struct qla_tgt_sess *sess; 5221 struct se_session *se_sess; 5222 struct qla_tgt_cmd *cmd; 5223 int tag; 5224 5225 if (unlikely(tgt->tgt_stop)) { 5226 ql_dbg(ql_dbg_io, vha, 0x300a, 5227 "New command while device %p is shutting down\n", tgt); 5228 return; 5229 } 5230 5231 if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { 5232 vha->hw->tgt.num_qfull_cmds_dropped++; 5233 if (vha->hw->tgt.num_qfull_cmds_dropped > 5234 vha->hw->qla_stats.stat_max_qfull_cmds_dropped) 5235 vha->hw->qla_stats.stat_max_qfull_cmds_dropped = 5236 vha->hw->tgt.num_qfull_cmds_dropped; 5237 5238 ql_dbg(ql_dbg_io, vha, 0x3068, 5239 "qla_target(%d): %s: QFull CMD dropped[%d]\n", 5240 vha->vp_idx, __func__, 5241 vha->hw->tgt.num_qfull_cmds_dropped); 5242 5243 qlt_chk_exch_leak_thresh_hold(vha); 5244 return; 5245 } 5246 5247 sess = ha->tgt.tgt_ops->find_sess_by_s_id 5248 (vha, atio->u.isp24.fcp_hdr.s_id); 5249 if (!sess) 5250 return; 5251 5252 se_sess = sess->se_sess; 5253 5254 tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING); 5255 if (tag < 0) 5256 return; 5257 5258 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 5259 if (!cmd) { 5260 ql_dbg(ql_dbg_io, vha, 0x3009, 5261 "qla_target(%d): %s: Allocation of cmd failed\n", 5262 vha->vp_idx, __func__); 5263 5264 vha->hw->tgt.num_qfull_cmds_dropped++; 5265 if (vha->hw->tgt.num_qfull_cmds_dropped > 5266 vha->hw->qla_stats.stat_max_qfull_cmds_dropped) 5267 vha->hw->qla_stats.stat_max_qfull_cmds_dropped = 5268 vha->hw->tgt.num_qfull_cmds_dropped; 5269 5270 qlt_chk_exch_leak_thresh_hold(vha); 5271 return; 5272 } 5273 5274 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 5275 5276 qlt_incr_num_pend_cmds(vha); 5277 INIT_LIST_HEAD(&cmd->cmd_list); 5278 memcpy(&cmd->atio, atio, sizeof(*atio)); 5279 5280 cmd->tgt = vha->vha_tgt.qla_tgt; 5281 cmd->vha = vha; 5282 cmd->reset_count = vha->hw->chip_reset; 5283 cmd->q_full = 1; 5284 5285 if (qfull) { 5286 cmd->q_full = 1; 5287 /* NOTE: borrowing the state field to carry the status */ 5288 cmd->state = status; 5289 } else 5290 cmd->term_exchg = 1; 5291 5292 list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); 5293 5294 vha->hw->tgt.num_qfull_cmds_alloc++; 5295 if (vha->hw->tgt.num_qfull_cmds_alloc > 5296 vha->hw->qla_stats.stat_max_qfull_cmds_alloc) 5297 vha->hw->qla_stats.stat_max_qfull_cmds_alloc = 5298 vha->hw->tgt.num_qfull_cmds_alloc; 5299 } 5300 5301 int 5302 qlt_free_qfull_cmds(struct scsi_qla_host *vha) 5303 { 5304 struct qla_hw_data *ha = vha->hw; 5305 unsigned long flags; 5306 struct qla_tgt_cmd *cmd, *tcmd; 5307 struct list_head free_list; 5308 int rc = 0; 5309 5310 if (list_empty(&ha->tgt.q_full_list)) 5311 return 0; 5312 5313 INIT_LIST_HEAD(&free_list); 5314 5315 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 5316 5317 if (list_empty(&ha->tgt.q_full_list)) { 5318 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5319 return 0; 5320 } 5321 5322 list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) { 5323 if (cmd->q_full) 5324 /* cmd->state is a borrowed field to hold status */ 5325 rc = __qlt_send_busy(vha, &cmd->atio, cmd->state); 5326 else if (cmd->term_exchg) 5327 rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio); 5328 5329 if (rc == -ENOMEM) 5330 break; 5331 5332 if (cmd->q_full) 5333 ql_dbg(ql_dbg_io, vha, 0x3006, 5334 "%s: busy sent for ox_id[%04x]\n", __func__, 5335 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5336 else if (cmd->term_exchg) 5337 ql_dbg(ql_dbg_io, vha, 0x3007, 5338 "%s: Term exchg sent for ox_id[%04x]\n", __func__, 5339 be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); 5340 else 5341 ql_dbg(ql_dbg_io, vha, 0x3008, 5342 "%s: Unexpected cmd in QFull list %p\n", __func__, 5343 cmd); 5344 5345 list_del(&cmd->cmd_list); 5346 list_add_tail(&cmd->cmd_list, &free_list); 5347 5348 /* piggy back on hardware_lock for protection */ 5349 vha->hw->tgt.num_qfull_cmds_alloc--; 5350 } 5351 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 5352 5353 cmd = NULL; 5354 5355 list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { 5356 list_del(&cmd->cmd_list); 5357 /* This cmd was never sent to TCM. There is no need 5358 * to schedule free or call free_cmd 5359 */ 5360 qlt_free_cmd(cmd); 5361 } 5362 return rc; 5363 } 5364 5365 static void 5366 qlt_send_busy(struct scsi_qla_host *vha, 5367 struct atio_from_isp *atio, uint16_t status) 5368 { 5369 int rc = 0; 5370 5371 rc = __qlt_send_busy(vha, atio, status); 5372 if (rc == -ENOMEM) 5373 qlt_alloc_qfull_cmd(vha, atio, status, 1); 5374 } 5375 5376 static int 5377 qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, 5378 struct atio_from_isp *atio) 5379 { 5380 struct qla_hw_data *ha = vha->hw; 5381 uint16_t status; 5382 5383 if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) 5384 return 0; 5385 5386 status = temp_sam_status; 5387 qlt_send_busy(vha, atio, status); 5388 return 1; 5389 } 5390 5391 /* ha->hardware_lock supposed to be held on entry */ 5392 /* called via callback from qla2xxx */ 5393 static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, 5394 struct atio_from_isp *atio, uint8_t ha_locked) 5395 { 5396 struct qla_hw_data *ha = vha->hw; 5397 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5398 int rc; 5399 unsigned long flags; 5400 5401 if (unlikely(tgt == NULL)) { 5402 ql_dbg(ql_dbg_io, vha, 0x3064, 5403 "ATIO pkt, but no tgt (ha %p)", ha); 5404 return; 5405 } 5406 /* 5407 * In tgt_stop mode we also should allow all requests to pass. 5408 * Otherwise, some commands can stuck. 5409 */ 5410 5411 tgt->atio_irq_cmd_count++; 5412 5413 switch (atio->u.raw.entry_type) { 5414 case ATIO_TYPE7: 5415 if (unlikely(atio->u.isp24.exchange_addr == 5416 ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { 5417 ql_dbg(ql_dbg_io, vha, 0x3065, 5418 "qla_target(%d): ATIO_TYPE7 " 5419 "received with UNKNOWN exchange address, " 5420 "sending QUEUE_FULL\n", vha->vp_idx); 5421 if (!ha_locked) 5422 spin_lock_irqsave(&ha->hardware_lock, flags); 5423 qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL); 5424 if (!ha_locked) 5425 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5426 break; 5427 } 5428 5429 5430 5431 if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { 5432 rc = qlt_chk_qfull_thresh_hold(vha, atio); 5433 if (rc != 0) { 5434 tgt->atio_irq_cmd_count--; 5435 return; 5436 } 5437 rc = qlt_handle_cmd_for_atio(vha, atio); 5438 } else { 5439 rc = qlt_handle_task_mgmt(vha, atio); 5440 } 5441 if (unlikely(rc != 0)) { 5442 if (rc == -ESRCH) { 5443 if (!ha_locked) 5444 spin_lock_irqsave 5445 (&ha->hardware_lock, flags); 5446 5447 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5448 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5449 #else 5450 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5451 #endif 5452 5453 if (!ha_locked) 5454 spin_unlock_irqrestore 5455 (&ha->hardware_lock, flags); 5456 5457 } else { 5458 if (tgt->tgt_stop) { 5459 ql_dbg(ql_dbg_tgt, vha, 0xe059, 5460 "qla_target: Unable to send " 5461 "command to target for req, " 5462 "ignoring.\n"); 5463 } else { 5464 ql_dbg(ql_dbg_tgt, vha, 0xe05a, 5465 "qla_target(%d): Unable to send " 5466 "command to target, sending BUSY " 5467 "status.\n", vha->vp_idx); 5468 if (!ha_locked) 5469 spin_lock_irqsave( 5470 &ha->hardware_lock, flags); 5471 qlt_send_busy(vha, atio, SAM_STAT_BUSY); 5472 if (!ha_locked) 5473 spin_unlock_irqrestore( 5474 &ha->hardware_lock, flags); 5475 } 5476 } 5477 } 5478 break; 5479 5480 case IMMED_NOTIFY_TYPE: 5481 { 5482 if (unlikely(atio->u.isp2x.entry_status != 0)) { 5483 ql_dbg(ql_dbg_tgt, vha, 0xe05b, 5484 "qla_target(%d): Received ATIO packet %x " 5485 "with error status %x\n", vha->vp_idx, 5486 atio->u.raw.entry_type, 5487 atio->u.isp2x.entry_status); 5488 break; 5489 } 5490 ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); 5491 5492 if (!ha_locked) 5493 spin_lock_irqsave(&ha->hardware_lock, flags); 5494 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); 5495 if (!ha_locked) 5496 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5497 break; 5498 } 5499 5500 default: 5501 ql_dbg(ql_dbg_tgt, vha, 0xe05c, 5502 "qla_target(%d): Received unknown ATIO atio " 5503 "type %x\n", vha->vp_idx, atio->u.raw.entry_type); 5504 break; 5505 } 5506 5507 tgt->atio_irq_cmd_count--; 5508 } 5509 5510 /* ha->hardware_lock supposed to be held on entry */ 5511 /* called via callback from qla2xxx */ 5512 static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) 5513 { 5514 struct qla_hw_data *ha = vha->hw; 5515 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5516 5517 if (unlikely(tgt == NULL)) { 5518 ql_dbg(ql_dbg_tgt, vha, 0xe05d, 5519 "qla_target(%d): Response pkt %x received, but no " 5520 "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha); 5521 return; 5522 } 5523 5524 /* 5525 * In tgt_stop mode we also should allow all requests to pass. 5526 * Otherwise, some commands can stuck. 5527 */ 5528 5529 tgt->irq_cmd_count++; 5530 5531 switch (pkt->entry_type) { 5532 case CTIO_CRC2: 5533 case CTIO_TYPE7: 5534 { 5535 struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; 5536 qlt_do_ctio_completion(vha, entry->handle, 5537 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5538 entry); 5539 break; 5540 } 5541 5542 case ACCEPT_TGT_IO_TYPE: 5543 { 5544 struct atio_from_isp *atio = (struct atio_from_isp *)pkt; 5545 int rc; 5546 if (atio->u.isp2x.status != 5547 cpu_to_le16(ATIO_CDB_VALID)) { 5548 ql_dbg(ql_dbg_tgt, vha, 0xe05e, 5549 "qla_target(%d): ATIO with error " 5550 "status %x received\n", vha->vp_idx, 5551 le16_to_cpu(atio->u.isp2x.status)); 5552 break; 5553 } 5554 5555 rc = qlt_chk_qfull_thresh_hold(vha, atio); 5556 if (rc != 0) { 5557 tgt->irq_cmd_count--; 5558 return; 5559 } 5560 5561 rc = qlt_handle_cmd_for_atio(vha, atio); 5562 if (unlikely(rc != 0)) { 5563 if (rc == -ESRCH) { 5564 #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ 5565 qlt_send_busy(vha, atio, 0); 5566 #else 5567 qlt_send_term_exchange(vha, NULL, atio, 1, 0); 5568 #endif 5569 } else { 5570 if (tgt->tgt_stop) { 5571 ql_dbg(ql_dbg_tgt, vha, 0xe05f, 5572 "qla_target: Unable to send " 5573 "command to target, sending TERM " 5574 "EXCHANGE for rsp\n"); 5575 qlt_send_term_exchange(vha, NULL, 5576 atio, 1, 0); 5577 } else { 5578 ql_dbg(ql_dbg_tgt, vha, 0xe060, 5579 "qla_target(%d): Unable to send " 5580 "command to target, sending BUSY " 5581 "status\n", vha->vp_idx); 5582 qlt_send_busy(vha, atio, 0); 5583 } 5584 } 5585 } 5586 } 5587 break; 5588 5589 case CONTINUE_TGT_IO_TYPE: 5590 { 5591 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5592 qlt_do_ctio_completion(vha, entry->handle, 5593 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5594 entry); 5595 break; 5596 } 5597 5598 case CTIO_A64_TYPE: 5599 { 5600 struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; 5601 qlt_do_ctio_completion(vha, entry->handle, 5602 le16_to_cpu(entry->status)|(pkt->entry_status << 16), 5603 entry); 5604 break; 5605 } 5606 5607 case IMMED_NOTIFY_TYPE: 5608 ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); 5609 qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); 5610 break; 5611 5612 case NOTIFY_ACK_TYPE: 5613 if (tgt->notify_ack_expected > 0) { 5614 struct nack_to_isp *entry = (struct nack_to_isp *)pkt; 5615 ql_dbg(ql_dbg_tgt, vha, 0xe036, 5616 "NOTIFY_ACK seq %08x status %x\n", 5617 le16_to_cpu(entry->u.isp2x.seq_id), 5618 le16_to_cpu(entry->u.isp2x.status)); 5619 tgt->notify_ack_expected--; 5620 if (entry->u.isp2x.status != 5621 cpu_to_le16(NOTIFY_ACK_SUCCESS)) { 5622 ql_dbg(ql_dbg_tgt, vha, 0xe061, 5623 "qla_target(%d): NOTIFY_ACK " 5624 "failed %x\n", vha->vp_idx, 5625 le16_to_cpu(entry->u.isp2x.status)); 5626 } 5627 } else { 5628 ql_dbg(ql_dbg_tgt, vha, 0xe062, 5629 "qla_target(%d): Unexpected NOTIFY_ACK received\n", 5630 vha->vp_idx); 5631 } 5632 break; 5633 5634 case ABTS_RECV_24XX: 5635 ql_dbg(ql_dbg_tgt, vha, 0xe037, 5636 "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); 5637 qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); 5638 break; 5639 5640 case ABTS_RESP_24XX: 5641 if (tgt->abts_resp_expected > 0) { 5642 struct abts_resp_from_24xx_fw *entry = 5643 (struct abts_resp_from_24xx_fw *)pkt; 5644 ql_dbg(ql_dbg_tgt, vha, 0xe038, 5645 "ABTS_RESP_24XX: compl_status %x\n", 5646 entry->compl_status); 5647 tgt->abts_resp_expected--; 5648 if (le16_to_cpu(entry->compl_status) != 5649 ABTS_RESP_COMPL_SUCCESS) { 5650 if ((entry->error_subcode1 == 0x1E) && 5651 (entry->error_subcode2 == 0)) { 5652 /* 5653 * We've got a race here: aborted 5654 * exchange not terminated, i.e. 5655 * response for the aborted command was 5656 * sent between the abort request was 5657 * received and processed. 5658 * Unfortunately, the firmware has a 5659 * silly requirement that all aborted 5660 * exchanges must be explicitely 5661 * terminated, otherwise it refuses to 5662 * send responses for the abort 5663 * requests. So, we have to 5664 * (re)terminate the exchange and retry 5665 * the abort response. 5666 */ 5667 qlt_24xx_retry_term_exchange(vha, 5668 entry); 5669 } else 5670 ql_dbg(ql_dbg_tgt, vha, 0xe063, 5671 "qla_target(%d): ABTS_RESP_24XX " 5672 "failed %x (subcode %x:%x)", 5673 vha->vp_idx, entry->compl_status, 5674 entry->error_subcode1, 5675 entry->error_subcode2); 5676 } 5677 } else { 5678 ql_dbg(ql_dbg_tgt, vha, 0xe064, 5679 "qla_target(%d): Unexpected ABTS_RESP_24XX " 5680 "received\n", vha->vp_idx); 5681 } 5682 break; 5683 5684 default: 5685 ql_dbg(ql_dbg_tgt, vha, 0xe065, 5686 "qla_target(%d): Received unknown response pkt " 5687 "type %x\n", vha->vp_idx, pkt->entry_type); 5688 break; 5689 } 5690 5691 tgt->irq_cmd_count--; 5692 } 5693 5694 /* 5695 * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire 5696 */ 5697 void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, 5698 uint16_t *mailbox) 5699 { 5700 struct qla_hw_data *ha = vha->hw; 5701 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 5702 int login_code; 5703 5704 if (!ha->tgt.tgt_ops) 5705 return; 5706 5707 if (unlikely(tgt == NULL)) { 5708 ql_dbg(ql_dbg_tgt, vha, 0xe03a, 5709 "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha); 5710 return; 5711 } 5712 5713 if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && 5714 IS_QLA2100(ha)) 5715 return; 5716 /* 5717 * In tgt_stop mode we also should allow all requests to pass. 5718 * Otherwise, some commands can stuck. 5719 */ 5720 5721 tgt->irq_cmd_count++; 5722 5723 switch (code) { 5724 case MBA_RESET: /* Reset */ 5725 case MBA_SYSTEM_ERR: /* System Error */ 5726 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 5727 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 5728 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, 5729 "qla_target(%d): System error async event %#x " 5730 "occurred", vha->vp_idx, code); 5731 break; 5732 case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ 5733 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 5734 break; 5735 5736 case MBA_LOOP_UP: 5737 { 5738 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, 5739 "qla_target(%d): Async LOOP_UP occurred " 5740 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, 5741 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5742 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5743 if (tgt->link_reinit_iocb_pending) { 5744 qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb, 5745 0, 0, 0, 0, 0, 0); 5746 tgt->link_reinit_iocb_pending = 0; 5747 } 5748 break; 5749 } 5750 5751 case MBA_LIP_OCCURRED: 5752 case MBA_LOOP_DOWN: 5753 case MBA_LIP_RESET: 5754 case MBA_RSCN_UPDATE: 5755 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, 5756 "qla_target(%d): Async event %#x occurred " 5757 "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5758 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5759 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5760 break; 5761 5762 case MBA_PORT_UPDATE: 5763 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, 5764 "qla_target(%d): Port update async event %#x " 5765 "occurred: updating the ports database (m[0]=%x, m[1]=%x, " 5766 "m[2]=%x, m[3]=%x)", vha->vp_idx, code, 5767 le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), 5768 le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); 5769 5770 login_code = le16_to_cpu(mailbox[2]); 5771 if (login_code == 0x4) 5772 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, 5773 "Async MB 2: Got PLOGI Complete\n"); 5774 else if (login_code == 0x7) 5775 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, 5776 "Async MB 2: Port Logged Out\n"); 5777 break; 5778 5779 default: 5780 break; 5781 } 5782 5783 tgt->irq_cmd_count--; 5784 } 5785 5786 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, 5787 uint16_t loop_id) 5788 { 5789 fc_port_t *fcport; 5790 int rc; 5791 5792 fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); 5793 if (!fcport) { 5794 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, 5795 "qla_target(%d): Allocation of tmp FC port failed", 5796 vha->vp_idx); 5797 return NULL; 5798 } 5799 5800 fcport->loop_id = loop_id; 5801 5802 rc = qla2x00_get_port_database(vha, fcport, 0); 5803 if (rc != QLA_SUCCESS) { 5804 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, 5805 "qla_target(%d): Failed to retrieve fcport " 5806 "information -- get_port_database() returned %x " 5807 "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); 5808 kfree(fcport); 5809 return NULL; 5810 } 5811 5812 return fcport; 5813 } 5814 5815 /* Must be called under tgt_mutex */ 5816 static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha, 5817 uint8_t *s_id) 5818 { 5819 struct qla_tgt_sess *sess = NULL; 5820 fc_port_t *fcport = NULL; 5821 int rc, global_resets; 5822 uint16_t loop_id = 0; 5823 5824 mutex_lock(&vha->vha_tgt.tgt_mutex); 5825 5826 retry: 5827 global_resets = 5828 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); 5829 5830 rc = qla24xx_get_loop_id(vha, s_id, &loop_id); 5831 if (rc != 0) { 5832 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5833 5834 if ((s_id[0] == 0xFF) && 5835 (s_id[1] == 0xFC)) { 5836 /* 5837 * This is Domain Controller, so it should be 5838 * OK to drop SCSI commands from it. 5839 */ 5840 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, 5841 "Unable to find initiator with S_ID %x:%x:%x", 5842 s_id[0], s_id[1], s_id[2]); 5843 } else 5844 ql_log(ql_log_info, vha, 0xf071, 5845 "qla_target(%d): Unable to find " 5846 "initiator with S_ID %x:%x:%x", 5847 vha->vp_idx, s_id[0], s_id[1], 5848 s_id[2]); 5849 5850 if (rc == -ENOENT) { 5851 qlt_port_logo_t logo; 5852 sid_to_portid(s_id, &logo.id); 5853 logo.cmd_count = 1; 5854 qlt_send_first_logo(vha, &logo); 5855 } 5856 5857 return NULL; 5858 } 5859 5860 fcport = qlt_get_port_database(vha, loop_id); 5861 if (!fcport) { 5862 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5863 return NULL; 5864 } 5865 5866 if (global_resets != 5867 atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { 5868 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, 5869 "qla_target(%d): global reset during session discovery " 5870 "(counter was %d, new %d), retrying", vha->vp_idx, 5871 global_resets, 5872 atomic_read(&vha->vha_tgt. 5873 qla_tgt->tgt_global_resets_count)); 5874 goto retry; 5875 } 5876 5877 sess = qlt_create_sess(vha, fcport, true); 5878 5879 mutex_unlock(&vha->vha_tgt.tgt_mutex); 5880 5881 kfree(fcport); 5882 return sess; 5883 } 5884 5885 static void qlt_abort_work(struct qla_tgt *tgt, 5886 struct qla_tgt_sess_work_param *prm) 5887 { 5888 struct scsi_qla_host *vha = tgt->vha; 5889 struct qla_hw_data *ha = vha->hw; 5890 struct qla_tgt_sess *sess = NULL; 5891 unsigned long flags = 0, flags2 = 0; 5892 uint32_t be_s_id; 5893 uint8_t s_id[3]; 5894 int rc; 5895 5896 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5897 5898 if (tgt->tgt_stop) 5899 goto out_term2; 5900 5901 s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; 5902 s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; 5903 s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; 5904 5905 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, 5906 (unsigned char *)&be_s_id); 5907 if (!sess) { 5908 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5909 5910 sess = qlt_make_local_sess(vha, s_id); 5911 /* sess has got an extra creation ref */ 5912 5913 spin_lock_irqsave(&ha->tgt.sess_lock, flags2); 5914 if (!sess) 5915 goto out_term2; 5916 } else { 5917 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 5918 sess = NULL; 5919 goto out_term2; 5920 } 5921 5922 kref_get(&sess->sess_kref); 5923 } 5924 5925 spin_lock_irqsave(&ha->hardware_lock, flags); 5926 5927 if (tgt->tgt_stop) 5928 goto out_term; 5929 5930 rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); 5931 if (rc != 0) 5932 goto out_term; 5933 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5934 5935 qlt_put_sess(sess); 5936 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5937 return; 5938 5939 out_term2: 5940 spin_lock_irqsave(&ha->hardware_lock, flags); 5941 5942 out_term: 5943 qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); 5944 spin_unlock_irqrestore(&ha->hardware_lock, flags); 5945 5946 qlt_put_sess(sess); 5947 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); 5948 } 5949 5950 static void qlt_tmr_work(struct qla_tgt *tgt, 5951 struct qla_tgt_sess_work_param *prm) 5952 { 5953 struct atio_from_isp *a = &prm->tm_iocb2; 5954 struct scsi_qla_host *vha = tgt->vha; 5955 struct qla_hw_data *ha = vha->hw; 5956 struct qla_tgt_sess *sess = NULL; 5957 unsigned long flags; 5958 uint8_t *s_id = NULL; /* to hide compiler warnings */ 5959 int rc; 5960 uint32_t lun, unpacked_lun; 5961 int fn; 5962 void *iocb; 5963 5964 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5965 5966 if (tgt->tgt_stop) 5967 goto out_term; 5968 5969 s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; 5970 sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); 5971 if (!sess) { 5972 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 5973 5974 sess = qlt_make_local_sess(vha, s_id); 5975 /* sess has got an extra creation ref */ 5976 5977 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 5978 if (!sess) 5979 goto out_term; 5980 } else { 5981 if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { 5982 sess = NULL; 5983 goto out_term; 5984 } 5985 5986 kref_get(&sess->sess_kref); 5987 } 5988 5989 iocb = a; 5990 lun = a->u.isp24.fcp_cmnd.lun; 5991 fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; 5992 unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); 5993 5994 rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); 5995 if (rc != 0) 5996 goto out_term; 5997 5998 qlt_put_sess(sess); 5999 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6000 return; 6001 6002 out_term: 6003 qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0); 6004 qlt_put_sess(sess); 6005 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 6006 } 6007 6008 static void qlt_sess_work_fn(struct work_struct *work) 6009 { 6010 struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); 6011 struct scsi_qla_host *vha = tgt->vha; 6012 unsigned long flags; 6013 6014 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); 6015 6016 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6017 while (!list_empty(&tgt->sess_works_list)) { 6018 struct qla_tgt_sess_work_param *prm = list_entry( 6019 tgt->sess_works_list.next, typeof(*prm), 6020 sess_works_list_entry); 6021 6022 /* 6023 * This work can be scheduled on several CPUs at time, so we 6024 * must delete the entry to eliminate double processing 6025 */ 6026 list_del(&prm->sess_works_list_entry); 6027 6028 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6029 6030 switch (prm->type) { 6031 case QLA_TGT_SESS_WORK_ABORT: 6032 qlt_abort_work(tgt, prm); 6033 break; 6034 case QLA_TGT_SESS_WORK_TM: 6035 qlt_tmr_work(tgt, prm); 6036 break; 6037 default: 6038 BUG_ON(1); 6039 break; 6040 } 6041 6042 spin_lock_irqsave(&tgt->sess_work_lock, flags); 6043 6044 kfree(prm); 6045 } 6046 spin_unlock_irqrestore(&tgt->sess_work_lock, flags); 6047 } 6048 6049 /* Must be called under tgt_host_action_mutex */ 6050 int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) 6051 { 6052 struct qla_tgt *tgt; 6053 6054 if (!QLA_TGT_MODE_ENABLED()) 6055 return 0; 6056 6057 if (!IS_TGT_MODE_CAPABLE(ha)) { 6058 ql_log(ql_log_warn, base_vha, 0xe070, 6059 "This adapter does not support target mode.\n"); 6060 return 0; 6061 } 6062 6063 ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, 6064 "Registering target for host %ld(%p).\n", base_vha->host_no, ha); 6065 6066 BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); 6067 6068 tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); 6069 if (!tgt) { 6070 ql_dbg(ql_dbg_tgt, base_vha, 0xe066, 6071 "Unable to allocate struct qla_tgt\n"); 6072 return -ENOMEM; 6073 } 6074 6075 if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) 6076 base_vha->host->hostt->supported_mode |= MODE_TARGET; 6077 6078 tgt->ha = ha; 6079 tgt->vha = base_vha; 6080 init_waitqueue_head(&tgt->waitQ); 6081 INIT_LIST_HEAD(&tgt->sess_list); 6082 INIT_LIST_HEAD(&tgt->del_sess_list); 6083 INIT_DELAYED_WORK(&tgt->sess_del_work, 6084 (void (*)(struct work_struct *))qlt_del_sess_work_fn); 6085 spin_lock_init(&tgt->sess_work_lock); 6086 INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); 6087 INIT_LIST_HEAD(&tgt->sess_works_list); 6088 spin_lock_init(&tgt->srr_lock); 6089 INIT_LIST_HEAD(&tgt->srr_ctio_list); 6090 INIT_LIST_HEAD(&tgt->srr_imm_list); 6091 INIT_WORK(&tgt->srr_work, qlt_handle_srr_work); 6092 atomic_set(&tgt->tgt_global_resets_count, 0); 6093 6094 base_vha->vha_tgt.qla_tgt = tgt; 6095 6096 ql_dbg(ql_dbg_tgt, base_vha, 0xe067, 6097 "qla_target(%d): using 64 Bit PCI addressing", 6098 base_vha->vp_idx); 6099 tgt->tgt_enable_64bit_addr = 1; 6100 /* 3 is reserved */ 6101 tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); 6102 tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX; 6103 tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX; 6104 6105 if (base_vha->fc_vport) 6106 return 0; 6107 6108 mutex_lock(&qla_tgt_mutex); 6109 list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); 6110 mutex_unlock(&qla_tgt_mutex); 6111 6112 return 0; 6113 } 6114 6115 /* Must be called under tgt_host_action_mutex */ 6116 int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) 6117 { 6118 if (!vha->vha_tgt.qla_tgt) 6119 return 0; 6120 6121 if (vha->fc_vport) { 6122 qlt_release(vha->vha_tgt.qla_tgt); 6123 return 0; 6124 } 6125 6126 /* free left over qfull cmds */ 6127 qlt_init_term_exchange(vha); 6128 6129 mutex_lock(&qla_tgt_mutex); 6130 list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); 6131 mutex_unlock(&qla_tgt_mutex); 6132 6133 ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", 6134 vha->host_no, ha); 6135 qlt_release(vha->vha_tgt.qla_tgt); 6136 6137 return 0; 6138 } 6139 6140 static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, 6141 unsigned char *b) 6142 { 6143 int i; 6144 6145 pr_debug("qla2xxx HW vha->node_name: "); 6146 for (i = 0; i < WWN_SIZE; i++) 6147 pr_debug("%02x ", vha->node_name[i]); 6148 pr_debug("\n"); 6149 pr_debug("qla2xxx HW vha->port_name: "); 6150 for (i = 0; i < WWN_SIZE; i++) 6151 pr_debug("%02x ", vha->port_name[i]); 6152 pr_debug("\n"); 6153 6154 pr_debug("qla2xxx passed configfs WWPN: "); 6155 put_unaligned_be64(wwpn, b); 6156 for (i = 0; i < WWN_SIZE; i++) 6157 pr_debug("%02x ", b[i]); 6158 pr_debug("\n"); 6159 } 6160 6161 /** 6162 * qla_tgt_lport_register - register lport with external module 6163 * 6164 * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops 6165 * @wwpn: Passwd FC target WWPN 6166 * @callback: lport initialization callback for tcm_qla2xxx code 6167 * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data 6168 */ 6169 int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, 6170 u64 npiv_wwpn, u64 npiv_wwnn, 6171 int (*callback)(struct scsi_qla_host *, void *, u64, u64)) 6172 { 6173 struct qla_tgt *tgt; 6174 struct scsi_qla_host *vha; 6175 struct qla_hw_data *ha; 6176 struct Scsi_Host *host; 6177 unsigned long flags; 6178 int rc; 6179 u8 b[WWN_SIZE]; 6180 6181 mutex_lock(&qla_tgt_mutex); 6182 list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { 6183 vha = tgt->vha; 6184 ha = vha->hw; 6185 6186 host = vha->host; 6187 if (!host) 6188 continue; 6189 6190 if (!(host->hostt->supported_mode & MODE_TARGET)) 6191 continue; 6192 6193 spin_lock_irqsave(&ha->hardware_lock, flags); 6194 if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { 6195 pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", 6196 host->host_no); 6197 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6198 continue; 6199 } 6200 if (tgt->tgt_stop) { 6201 pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", 6202 host->host_no); 6203 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6204 continue; 6205 } 6206 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6207 6208 if (!scsi_host_get(host)) { 6209 ql_dbg(ql_dbg_tgt, vha, 0xe068, 6210 "Unable to scsi_host_get() for" 6211 " qla2xxx scsi_host\n"); 6212 continue; 6213 } 6214 qlt_lport_dump(vha, phys_wwpn, b); 6215 6216 if (memcmp(vha->port_name, b, WWN_SIZE)) { 6217 scsi_host_put(host); 6218 continue; 6219 } 6220 rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); 6221 if (rc != 0) 6222 scsi_host_put(host); 6223 6224 mutex_unlock(&qla_tgt_mutex); 6225 return rc; 6226 } 6227 mutex_unlock(&qla_tgt_mutex); 6228 6229 return -ENODEV; 6230 } 6231 EXPORT_SYMBOL(qlt_lport_register); 6232 6233 /** 6234 * qla_tgt_lport_deregister - Degister lport 6235 * 6236 * @vha: Registered scsi_qla_host pointer 6237 */ 6238 void qlt_lport_deregister(struct scsi_qla_host *vha) 6239 { 6240 struct qla_hw_data *ha = vha->hw; 6241 struct Scsi_Host *sh = vha->host; 6242 /* 6243 * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data 6244 */ 6245 vha->vha_tgt.target_lport_ptr = NULL; 6246 ha->tgt.tgt_ops = NULL; 6247 /* 6248 * Release the Scsi_Host reference for the underlying qla2xxx host 6249 */ 6250 scsi_host_put(sh); 6251 } 6252 EXPORT_SYMBOL(qlt_lport_deregister); 6253 6254 /* Must be called under HW lock */ 6255 static void qlt_set_mode(struct scsi_qla_host *vha) 6256 { 6257 struct qla_hw_data *ha = vha->hw; 6258 6259 switch (ql2x_ini_mode) { 6260 case QLA2XXX_INI_MODE_DISABLED: 6261 case QLA2XXX_INI_MODE_EXCLUSIVE: 6262 vha->host->active_mode = MODE_TARGET; 6263 break; 6264 case QLA2XXX_INI_MODE_ENABLED: 6265 vha->host->active_mode |= MODE_TARGET; 6266 break; 6267 default: 6268 break; 6269 } 6270 6271 if (ha->tgt.ini_mode_force_reverse) 6272 qla_reverse_ini_mode(vha); 6273 } 6274 6275 /* Must be called under HW lock */ 6276 static void qlt_clear_mode(struct scsi_qla_host *vha) 6277 { 6278 struct qla_hw_data *ha = vha->hw; 6279 6280 switch (ql2x_ini_mode) { 6281 case QLA2XXX_INI_MODE_DISABLED: 6282 vha->host->active_mode = MODE_UNKNOWN; 6283 break; 6284 case QLA2XXX_INI_MODE_EXCLUSIVE: 6285 vha->host->active_mode = MODE_INITIATOR; 6286 break; 6287 case QLA2XXX_INI_MODE_ENABLED: 6288 vha->host->active_mode &= ~MODE_TARGET; 6289 break; 6290 default: 6291 break; 6292 } 6293 6294 if (ha->tgt.ini_mode_force_reverse) 6295 qla_reverse_ini_mode(vha); 6296 } 6297 6298 /* 6299 * qla_tgt_enable_vha - NO LOCK HELD 6300 * 6301 * host_reset, bring up w/ Target Mode Enabled 6302 */ 6303 void 6304 qlt_enable_vha(struct scsi_qla_host *vha) 6305 { 6306 struct qla_hw_data *ha = vha->hw; 6307 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6308 unsigned long flags; 6309 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 6310 int rspq_ent = QLA83XX_RSPQ_MSIX_ENTRY_NUMBER; 6311 6312 if (!tgt) { 6313 ql_dbg(ql_dbg_tgt, vha, 0xe069, 6314 "Unable to locate qla_tgt pointer from" 6315 " struct qla_hw_data\n"); 6316 dump_stack(); 6317 return; 6318 } 6319 6320 spin_lock_irqsave(&ha->hardware_lock, flags); 6321 tgt->tgt_stopped = 0; 6322 qlt_set_mode(vha); 6323 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6324 6325 if (vha->vp_idx) { 6326 qla24xx_disable_vp(vha); 6327 qla24xx_enable_vp(vha); 6328 } else { 6329 if (ha->msix_entries) { 6330 ql_dbg(ql_dbg_tgt, vha, 0xffff, 6331 "%s: host%ld : vector %d cpu %d\n", 6332 __func__, vha->host_no, 6333 ha->msix_entries[rspq_ent].vector, 6334 ha->msix_entries[rspq_ent].cpuid); 6335 6336 ha->tgt.rspq_vector_cpuid = 6337 ha->msix_entries[rspq_ent].cpuid; 6338 } 6339 6340 set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); 6341 qla2xxx_wake_dpc(base_vha); 6342 qla2x00_wait_for_hba_online(base_vha); 6343 } 6344 } 6345 EXPORT_SYMBOL(qlt_enable_vha); 6346 6347 /* 6348 * qla_tgt_disable_vha - NO LOCK HELD 6349 * 6350 * Disable Target Mode and reset the adapter 6351 */ 6352 static void qlt_disable_vha(struct scsi_qla_host *vha) 6353 { 6354 struct qla_hw_data *ha = vha->hw; 6355 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 6356 unsigned long flags; 6357 6358 if (!tgt) { 6359 ql_dbg(ql_dbg_tgt, vha, 0xe06a, 6360 "Unable to locate qla_tgt pointer from" 6361 " struct qla_hw_data\n"); 6362 dump_stack(); 6363 return; 6364 } 6365 6366 spin_lock_irqsave(&ha->hardware_lock, flags); 6367 qlt_clear_mode(vha); 6368 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6369 6370 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); 6371 qla2xxx_wake_dpc(vha); 6372 qla2x00_wait_for_hba_online(vha); 6373 } 6374 6375 /* 6376 * Called from qla_init.c:qla24xx_vport_create() contex to setup 6377 * the target mode specific struct scsi_qla_host and struct qla_hw_data 6378 * members. 6379 */ 6380 void 6381 qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) 6382 { 6383 if (!qla_tgt_mode_enabled(vha)) 6384 return; 6385 6386 vha->vha_tgt.qla_tgt = NULL; 6387 6388 mutex_init(&vha->vha_tgt.tgt_mutex); 6389 mutex_init(&vha->vha_tgt.tgt_host_action_mutex); 6390 6391 qlt_clear_mode(vha); 6392 6393 /* 6394 * NOTE: Currently the value is kept the same for <24xx and 6395 * >=24xx ISPs. If it is necessary to change it, 6396 * the check should be added for specific ISPs, 6397 * assigning the value appropriately. 6398 */ 6399 ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; 6400 6401 qlt_add_target(ha, vha); 6402 } 6403 6404 void 6405 qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) 6406 { 6407 /* 6408 * FC-4 Feature bit 0 indicates target functionality to the name server. 6409 */ 6410 if (qla_tgt_mode_enabled(vha)) { 6411 if (qla_ini_mode_enabled(vha)) 6412 ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; 6413 else 6414 ct_req->req.rff_id.fc4_feature = BIT_0; 6415 } else if (qla_ini_mode_enabled(vha)) { 6416 ct_req->req.rff_id.fc4_feature = BIT_1; 6417 } 6418 } 6419 6420 /* 6421 * qlt_init_atio_q_entries() - Initializes ATIO queue entries. 6422 * @ha: HA context 6423 * 6424 * Beginning of ATIO ring has initialization control block already built 6425 * by nvram config routine. 6426 * 6427 * Returns 0 on success. 6428 */ 6429 void 6430 qlt_init_atio_q_entries(struct scsi_qla_host *vha) 6431 { 6432 struct qla_hw_data *ha = vha->hw; 6433 uint16_t cnt; 6434 struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; 6435 6436 if (!qla_tgt_mode_enabled(vha)) 6437 return; 6438 6439 for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { 6440 pkt->u.raw.signature = ATIO_PROCESSED; 6441 pkt++; 6442 } 6443 6444 } 6445 6446 /* 6447 * qlt_24xx_process_atio_queue() - Process ATIO queue entries. 6448 * @ha: SCSI driver HA context 6449 */ 6450 void 6451 qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) 6452 { 6453 struct qla_hw_data *ha = vha->hw; 6454 struct atio_from_isp *pkt; 6455 int cnt, i; 6456 6457 if (!vha->flags.online) 6458 return; 6459 6460 while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) { 6461 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6462 cnt = pkt->u.raw.entry_count; 6463 6464 qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt, 6465 ha_locked); 6466 6467 for (i = 0; i < cnt; i++) { 6468 ha->tgt.atio_ring_index++; 6469 if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { 6470 ha->tgt.atio_ring_index = 0; 6471 ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; 6472 } else 6473 ha->tgt.atio_ring_ptr++; 6474 6475 pkt->u.raw.signature = ATIO_PROCESSED; 6476 pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; 6477 } 6478 wmb(); 6479 } 6480 6481 /* Adjust ring index */ 6482 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); 6483 RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha)); 6484 } 6485 6486 void 6487 qlt_24xx_config_rings(struct scsi_qla_host *vha) 6488 { 6489 struct qla_hw_data *ha = vha->hw; 6490 if (!QLA_TGT_MODE_ENABLED()) 6491 return; 6492 6493 WRT_REG_DWORD(ISP_ATIO_Q_IN(vha), 0); 6494 WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), 0); 6495 RD_REG_DWORD(ISP_ATIO_Q_OUT(vha)); 6496 6497 if (IS_ATIO_MSIX_CAPABLE(ha)) { 6498 struct qla_msix_entry *msix = &ha->msix_entries[2]; 6499 struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; 6500 6501 icb->msix_atio = cpu_to_le16(msix->entry); 6502 ql_dbg(ql_dbg_init, vha, 0xf072, 6503 "Registering ICB vector 0x%x for atio que.\n", 6504 msix->entry); 6505 } 6506 } 6507 6508 void 6509 qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) 6510 { 6511 struct qla_hw_data *ha = vha->hw; 6512 6513 if (qla_tgt_mode_enabled(vha)) { 6514 if (!ha->tgt.saved_set) { 6515 /* We save only once */ 6516 ha->tgt.saved_exchange_count = nv->exchange_count; 6517 ha->tgt.saved_firmware_options_1 = 6518 nv->firmware_options_1; 6519 ha->tgt.saved_firmware_options_2 = 6520 nv->firmware_options_2; 6521 ha->tgt.saved_firmware_options_3 = 6522 nv->firmware_options_3; 6523 ha->tgt.saved_set = 1; 6524 } 6525 6526 nv->exchange_count = cpu_to_le16(0xFFFF); 6527 6528 /* Enable target mode */ 6529 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6530 6531 /* Disable ini mode, if requested */ 6532 if (!qla_ini_mode_enabled(vha)) 6533 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6534 6535 /* Disable Full Login after LIP */ 6536 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6537 /* Enable initial LIP */ 6538 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6539 if (ql2xtgt_tape_enable) 6540 /* Enable FC Tape support */ 6541 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6542 else 6543 /* Disable FC Tape support */ 6544 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6545 6546 /* Disable Full Login after LIP */ 6547 nv->host_p &= cpu_to_le32(~BIT_10); 6548 /* Enable target PRLI control */ 6549 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6550 } else { 6551 if (ha->tgt.saved_set) { 6552 nv->exchange_count = ha->tgt.saved_exchange_count; 6553 nv->firmware_options_1 = 6554 ha->tgt.saved_firmware_options_1; 6555 nv->firmware_options_2 = 6556 ha->tgt.saved_firmware_options_2; 6557 nv->firmware_options_3 = 6558 ha->tgt.saved_firmware_options_3; 6559 } 6560 return; 6561 } 6562 6563 /* out-of-order frames reassembly */ 6564 nv->firmware_options_3 |= BIT_6|BIT_9; 6565 6566 if (ha->tgt.enable_class_2) { 6567 if (vha->flags.init_done) 6568 fc_host_supported_classes(vha->host) = 6569 FC_COS_CLASS2 | FC_COS_CLASS3; 6570 6571 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6572 } else { 6573 if (vha->flags.init_done) 6574 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6575 6576 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6577 } 6578 } 6579 6580 void 6581 qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, 6582 struct init_cb_24xx *icb) 6583 { 6584 struct qla_hw_data *ha = vha->hw; 6585 6586 if (!QLA_TGT_MODE_ENABLED()) 6587 return; 6588 6589 if (ha->tgt.node_name_set) { 6590 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6591 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6592 } 6593 6594 /* disable ZIO at start time. */ 6595 if (!vha->flags.init_done) { 6596 uint32_t tmp; 6597 tmp = le32_to_cpu(icb->firmware_options_2); 6598 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6599 icb->firmware_options_2 = cpu_to_le32(tmp); 6600 } 6601 } 6602 6603 void 6604 qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) 6605 { 6606 struct qla_hw_data *ha = vha->hw; 6607 6608 if (!QLA_TGT_MODE_ENABLED()) 6609 return; 6610 6611 if (qla_tgt_mode_enabled(vha)) { 6612 if (!ha->tgt.saved_set) { 6613 /* We save only once */ 6614 ha->tgt.saved_exchange_count = nv->exchange_count; 6615 ha->tgt.saved_firmware_options_1 = 6616 nv->firmware_options_1; 6617 ha->tgt.saved_firmware_options_2 = 6618 nv->firmware_options_2; 6619 ha->tgt.saved_firmware_options_3 = 6620 nv->firmware_options_3; 6621 ha->tgt.saved_set = 1; 6622 } 6623 6624 nv->exchange_count = cpu_to_le16(0xFFFF); 6625 6626 /* Enable target mode */ 6627 nv->firmware_options_1 |= cpu_to_le32(BIT_4); 6628 6629 /* Disable ini mode, if requested */ 6630 if (!qla_ini_mode_enabled(vha)) 6631 nv->firmware_options_1 |= cpu_to_le32(BIT_5); 6632 6633 /* Disable Full Login after LIP */ 6634 nv->firmware_options_1 &= cpu_to_le32(~BIT_13); 6635 /* Enable initial LIP */ 6636 nv->firmware_options_1 &= cpu_to_le32(~BIT_9); 6637 if (ql2xtgt_tape_enable) 6638 /* Enable FC tape support */ 6639 nv->firmware_options_2 |= cpu_to_le32(BIT_12); 6640 else 6641 /* Disable FC tape support */ 6642 nv->firmware_options_2 &= cpu_to_le32(~BIT_12); 6643 6644 /* Disable Full Login after LIP */ 6645 nv->host_p &= cpu_to_le32(~BIT_10); 6646 /* Enable target PRLI control */ 6647 nv->firmware_options_2 |= cpu_to_le32(BIT_14); 6648 } else { 6649 if (ha->tgt.saved_set) { 6650 nv->exchange_count = ha->tgt.saved_exchange_count; 6651 nv->firmware_options_1 = 6652 ha->tgt.saved_firmware_options_1; 6653 nv->firmware_options_2 = 6654 ha->tgt.saved_firmware_options_2; 6655 nv->firmware_options_3 = 6656 ha->tgt.saved_firmware_options_3; 6657 } 6658 return; 6659 } 6660 6661 /* out-of-order frames reassembly */ 6662 nv->firmware_options_3 |= BIT_6|BIT_9; 6663 6664 if (ha->tgt.enable_class_2) { 6665 if (vha->flags.init_done) 6666 fc_host_supported_classes(vha->host) = 6667 FC_COS_CLASS2 | FC_COS_CLASS3; 6668 6669 nv->firmware_options_2 |= cpu_to_le32(BIT_8); 6670 } else { 6671 if (vha->flags.init_done) 6672 fc_host_supported_classes(vha->host) = FC_COS_CLASS3; 6673 6674 nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); 6675 } 6676 } 6677 6678 void 6679 qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, 6680 struct init_cb_81xx *icb) 6681 { 6682 struct qla_hw_data *ha = vha->hw; 6683 6684 if (!QLA_TGT_MODE_ENABLED()) 6685 return; 6686 6687 if (ha->tgt.node_name_set) { 6688 memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); 6689 icb->firmware_options_1 |= cpu_to_le32(BIT_14); 6690 } 6691 6692 /* disable ZIO at start time. */ 6693 if (!vha->flags.init_done) { 6694 uint32_t tmp; 6695 tmp = le32_to_cpu(icb->firmware_options_2); 6696 tmp &= ~(BIT_3 | BIT_2 | BIT_1 | BIT_0); 6697 icb->firmware_options_2 = cpu_to_le32(tmp); 6698 } 6699 6700 } 6701 6702 void 6703 qlt_83xx_iospace_config(struct qla_hw_data *ha) 6704 { 6705 if (!QLA_TGT_MODE_ENABLED()) 6706 return; 6707 6708 ha->msix_count += 1; /* For ATIO Q */ 6709 } 6710 6711 int 6712 qlt_24xx_process_response_error(struct scsi_qla_host *vha, 6713 struct sts_entry_24xx *pkt) 6714 { 6715 switch (pkt->entry_type) { 6716 case ABTS_RECV_24XX: 6717 case ABTS_RESP_24XX: 6718 case CTIO_TYPE7: 6719 case NOTIFY_ACK_TYPE: 6720 case CTIO_CRC2: 6721 return 1; 6722 default: 6723 return 0; 6724 } 6725 } 6726 6727 void 6728 qlt_modify_vp_config(struct scsi_qla_host *vha, 6729 struct vp_config_entry_24xx *vpmod) 6730 { 6731 if (qla_tgt_mode_enabled(vha)) 6732 vpmod->options_idx1 &= ~BIT_5; 6733 /* Disable ini mode, if requested */ 6734 if (!qla_ini_mode_enabled(vha)) 6735 vpmod->options_idx1 &= ~BIT_4; 6736 } 6737 6738 void 6739 qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) 6740 { 6741 if (!QLA_TGT_MODE_ENABLED()) 6742 return; 6743 6744 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) { 6745 ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; 6746 ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; 6747 } else { 6748 ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; 6749 ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; 6750 } 6751 6752 mutex_init(&base_vha->vha_tgt.tgt_mutex); 6753 mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); 6754 qlt_clear_mode(base_vha); 6755 } 6756 6757 irqreturn_t 6758 qla83xx_msix_atio_q(int irq, void *dev_id) 6759 { 6760 struct rsp_que *rsp; 6761 scsi_qla_host_t *vha; 6762 struct qla_hw_data *ha; 6763 unsigned long flags; 6764 6765 rsp = (struct rsp_que *) dev_id; 6766 ha = rsp->hw; 6767 vha = pci_get_drvdata(ha->pdev); 6768 6769 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6770 6771 qlt_24xx_process_atio_queue(vha, 0); 6772 6773 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6774 6775 return IRQ_HANDLED; 6776 } 6777 6778 static void 6779 qlt_handle_abts_recv_work(struct work_struct *work) 6780 { 6781 struct qla_tgt_sess_op *op = container_of(work, 6782 struct qla_tgt_sess_op, work); 6783 scsi_qla_host_t *vha = op->vha; 6784 struct qla_hw_data *ha = vha->hw; 6785 unsigned long flags; 6786 6787 if (qla2x00_reset_active(vha) || (op->chip_reset != ha->chip_reset)) 6788 return; 6789 6790 spin_lock_irqsave(&ha->tgt.atio_lock, flags); 6791 qlt_24xx_process_atio_queue(vha, 0); 6792 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); 6793 6794 spin_lock_irqsave(&ha->hardware_lock, flags); 6795 qlt_response_pkt_all_vps(vha, (response_t *)&op->atio); 6796 spin_unlock_irqrestore(&ha->hardware_lock, flags); 6797 } 6798 6799 void 6800 qlt_handle_abts_recv(struct scsi_qla_host *vha, response_t *pkt) 6801 { 6802 struct qla_tgt_sess_op *op; 6803 6804 op = kzalloc(sizeof(*op), GFP_ATOMIC); 6805 6806 if (!op) { 6807 /* do not reach for ATIO queue here. This is best effort err 6808 * recovery at this point. 6809 */ 6810 qlt_response_pkt_all_vps(vha, pkt); 6811 return; 6812 } 6813 6814 memcpy(&op->atio, pkt, sizeof(*pkt)); 6815 op->vha = vha; 6816 op->chip_reset = vha->hw->chip_reset; 6817 INIT_WORK(&op->work, qlt_handle_abts_recv_work); 6818 queue_work(qla_tgt_wq, &op->work); 6819 return; 6820 } 6821 6822 int 6823 qlt_mem_alloc(struct qla_hw_data *ha) 6824 { 6825 if (!QLA_TGT_MODE_ENABLED()) 6826 return 0; 6827 6828 ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * 6829 MAX_MULTI_ID_FABRIC, GFP_KERNEL); 6830 if (!ha->tgt.tgt_vp_map) 6831 return -ENOMEM; 6832 6833 ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, 6834 (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), 6835 &ha->tgt.atio_dma, GFP_KERNEL); 6836 if (!ha->tgt.atio_ring) { 6837 kfree(ha->tgt.tgt_vp_map); 6838 return -ENOMEM; 6839 } 6840 return 0; 6841 } 6842 6843 void 6844 qlt_mem_free(struct qla_hw_data *ha) 6845 { 6846 if (!QLA_TGT_MODE_ENABLED()) 6847 return; 6848 6849 if (ha->tgt.atio_ring) { 6850 dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * 6851 sizeof(struct atio_from_isp), ha->tgt.atio_ring, 6852 ha->tgt.atio_dma); 6853 } 6854 kfree(ha->tgt.tgt_vp_map); 6855 } 6856 6857 /* vport_slock to be held by the caller */ 6858 void 6859 qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) 6860 { 6861 if (!QLA_TGT_MODE_ENABLED()) 6862 return; 6863 6864 switch (cmd) { 6865 case SET_VP_IDX: 6866 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; 6867 break; 6868 case SET_AL_PA: 6869 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx; 6870 break; 6871 case RESET_VP_IDX: 6872 vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; 6873 break; 6874 case RESET_AL_PA: 6875 vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0; 6876 break; 6877 } 6878 } 6879 6880 static int __init qlt_parse_ini_mode(void) 6881 { 6882 if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) 6883 ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; 6884 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) 6885 ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; 6886 else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) 6887 ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; 6888 else 6889 return false; 6890 6891 return true; 6892 } 6893 6894 int __init qlt_init(void) 6895 { 6896 int ret; 6897 6898 if (!qlt_parse_ini_mode()) { 6899 ql_log(ql_log_fatal, NULL, 0xe06b, 6900 "qlt_parse_ini_mode() failed\n"); 6901 return -EINVAL; 6902 } 6903 6904 if (!QLA_TGT_MODE_ENABLED()) 6905 return 0; 6906 6907 qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", 6908 sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct 6909 qla_tgt_mgmt_cmd), 0, NULL); 6910 if (!qla_tgt_mgmt_cmd_cachep) { 6911 ql_log(ql_log_fatal, NULL, 0xe06d, 6912 "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); 6913 return -ENOMEM; 6914 } 6915 6916 qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", 6917 sizeof(qlt_plogi_ack_t), 6918 __alignof__(qlt_plogi_ack_t), 6919 0, NULL); 6920 6921 if (!qla_tgt_plogi_cachep) { 6922 ql_log(ql_log_fatal, NULL, 0xe06d, 6923 "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); 6924 ret = -ENOMEM; 6925 goto out_mgmt_cmd_cachep; 6926 } 6927 6928 qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, 6929 mempool_free_slab, qla_tgt_mgmt_cmd_cachep); 6930 if (!qla_tgt_mgmt_cmd_mempool) { 6931 ql_log(ql_log_fatal, NULL, 0xe06e, 6932 "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); 6933 ret = -ENOMEM; 6934 goto out_plogi_cachep; 6935 } 6936 6937 qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); 6938 if (!qla_tgt_wq) { 6939 ql_log(ql_log_fatal, NULL, 0xe06f, 6940 "alloc_workqueue for qla_tgt_wq failed\n"); 6941 ret = -ENOMEM; 6942 goto out_cmd_mempool; 6943 } 6944 /* 6945 * Return 1 to signal that initiator-mode is being disabled 6946 */ 6947 return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; 6948 6949 out_cmd_mempool: 6950 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6951 out_plogi_cachep: 6952 kmem_cache_destroy(qla_tgt_plogi_cachep); 6953 out_mgmt_cmd_cachep: 6954 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6955 return ret; 6956 } 6957 6958 void qlt_exit(void) 6959 { 6960 if (!QLA_TGT_MODE_ENABLED()) 6961 return; 6962 6963 destroy_workqueue(qla_tgt_wq); 6964 mempool_destroy(qla_tgt_mgmt_cmd_mempool); 6965 kmem_cache_destroy(qla_tgt_plogi_cachep); 6966 kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); 6967 } 6968