1 /* 2 * QLogic iSCSI HBA Driver 3 * Copyright (c) 2003-2010 QLogic Corporation 4 * 5 * See LICENSE.qla4xxx for copyright and licensing details. 6 */ 7 8 #include "ql4_def.h" 9 #include "ql4_glbl.h" 10 #include "ql4_dbg.h" 11 #include "ql4_inline.h" 12 13 /** 14 * qla4xxx_copy_sense - copy sense data into cmd sense buffer 15 * @ha: Pointer to host adapter structure. 16 * @sts_entry: Pointer to status entry structure. 17 * @srb: Pointer to srb structure. 18 **/ 19 static void qla4xxx_copy_sense(struct scsi_qla_host *ha, 20 struct status_entry *sts_entry, 21 struct srb *srb) 22 { 23 struct scsi_cmnd *cmd = srb->cmd; 24 uint16_t sense_len; 25 26 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 27 sense_len = le16_to_cpu(sts_entry->senseDataByteCnt); 28 if (sense_len == 0) { 29 DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%d:%d: %s:" 30 " sense len 0\n", ha->host_no, 31 cmd->device->channel, cmd->device->id, 32 cmd->device->lun, __func__)); 33 ha->status_srb = NULL; 34 return; 35 } 36 /* Save total available sense length, 37 * not to exceed cmd's sense buffer size */ 38 sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE); 39 srb->req_sense_ptr = cmd->sense_buffer; 40 srb->req_sense_len = sense_len; 41 42 /* Copy sense from sts_entry pkt */ 43 sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN); 44 memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len); 45 46 DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: %s: sense key = %x, " 47 "ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no, 48 cmd->device->channel, cmd->device->id, 49 cmd->device->lun, __func__, 50 sts_entry->senseData[2] & 0x0f, 51 sts_entry->senseData[7], 52 sts_entry->senseData[12], 53 sts_entry->senseData[13])); 54 55 DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len)); 56 srb->flags |= SRB_GOT_SENSE; 57 58 /* Update srb, in case a sts_cont pkt follows */ 59 srb->req_sense_ptr += sense_len; 60 srb->req_sense_len -= sense_len; 61 if (srb->req_sense_len != 0) 62 ha->status_srb = srb; 63 else 64 ha->status_srb = NULL; 65 } 66 67 /** 68 * qla4xxx_status_cont_entry - Process a Status Continuations entry. 69 * @ha: SCSI driver HA context 70 * @sts_cont: Entry pointer 71 * 72 * Extended sense data. 73 */ 74 static void 75 qla4xxx_status_cont_entry(struct scsi_qla_host *ha, 76 struct status_cont_entry *sts_cont) 77 { 78 struct srb *srb = ha->status_srb; 79 struct scsi_cmnd *cmd; 80 uint16_t sense_len; 81 82 if (srb == NULL) 83 return; 84 85 cmd = srb->cmd; 86 if (cmd == NULL) { 87 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned " 88 "back to OS srb=%p srb->state:%d\n", ha->host_no, 89 __func__, srb, srb->state)); 90 ha->status_srb = NULL; 91 return; 92 } 93 94 /* Copy sense data. */ 95 sense_len = min_t(uint16_t, srb->req_sense_len, 96 IOCB_MAX_EXT_SENSEDATA_LEN); 97 memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len); 98 DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len)); 99 100 srb->req_sense_ptr += sense_len; 101 srb->req_sense_len -= sense_len; 102 103 /* Place command on done queue. */ 104 if (srb->req_sense_len == 0) { 105 kref_put(&srb->srb_ref, qla4xxx_srb_compl); 106 ha->status_srb = NULL; 107 } 108 } 109 110 /** 111 * qla4xxx_status_entry - processes status IOCBs 112 * @ha: Pointer to host adapter structure. 113 * @sts_entry: Pointer to status entry structure. 114 **/ 115 static void qla4xxx_status_entry(struct scsi_qla_host *ha, 116 struct status_entry *sts_entry) 117 { 118 uint8_t scsi_status; 119 struct scsi_cmnd *cmd; 120 struct srb *srb; 121 struct ddb_entry *ddb_entry; 122 uint32_t residual; 123 124 srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle)); 125 if (!srb) { 126 ql4_printk(KERN_WARNING, ha, "%s invalid status entry: " 127 "handle=0x%0x, srb=%p\n", __func__, 128 sts_entry->handle, srb); 129 if (is_qla8022(ha)) 130 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 131 else 132 set_bit(DPC_RESET_HA, &ha->dpc_flags); 133 return; 134 } 135 136 cmd = srb->cmd; 137 if (cmd == NULL) { 138 DEBUG2(printk("scsi%ld: %s: Command already returned back to " 139 "OS pkt->handle=%d srb=%p srb->state:%d\n", 140 ha->host_no, __func__, sts_entry->handle, 141 srb, srb->state)); 142 ql4_printk(KERN_WARNING, ha, "Command is NULL:" 143 " already returned to OS (srb=%p)\n", srb); 144 return; 145 } 146 147 ddb_entry = srb->ddb; 148 if (ddb_entry == NULL) { 149 cmd->result = DID_NO_CONNECT << 16; 150 goto status_entry_exit; 151 } 152 153 residual = le32_to_cpu(sts_entry->residualByteCnt); 154 155 /* Translate ISP error to a Linux SCSI error. */ 156 scsi_status = sts_entry->scsiStatus; 157 switch (sts_entry->completionStatus) { 158 case SCS_COMPLETE: 159 160 if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) { 161 cmd->result = DID_ERROR << 16; 162 break; 163 } 164 165 if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) { 166 scsi_set_resid(cmd, residual); 167 if (!scsi_status && ((scsi_bufflen(cmd) - residual) < 168 cmd->underflow)) { 169 170 cmd->result = DID_ERROR << 16; 171 172 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " 173 "Mid-layer Data underrun0, " 174 "xferlen = 0x%x, " 175 "residual = 0x%x\n", ha->host_no, 176 cmd->device->channel, 177 cmd->device->id, 178 cmd->device->lun, __func__, 179 scsi_bufflen(cmd), residual)); 180 break; 181 } 182 } 183 184 cmd->result = DID_OK << 16 | scsi_status; 185 186 if (scsi_status != SCSI_CHECK_CONDITION) 187 break; 188 189 /* Copy Sense Data into sense buffer. */ 190 qla4xxx_copy_sense(ha, sts_entry, srb); 191 break; 192 193 case SCS_INCOMPLETE: 194 /* Always set the status to DID_ERROR, since 195 * all conditions result in that status anyway */ 196 cmd->result = DID_ERROR << 16; 197 break; 198 199 case SCS_RESET_OCCURRED: 200 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n", 201 ha->host_no, cmd->device->channel, 202 cmd->device->id, cmd->device->lun, __func__)); 203 204 cmd->result = DID_RESET << 16; 205 break; 206 207 case SCS_ABORTED: 208 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n", 209 ha->host_no, cmd->device->channel, 210 cmd->device->id, cmd->device->lun, __func__)); 211 212 cmd->result = DID_RESET << 16; 213 break; 214 215 case SCS_TIMEOUT: 216 DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n", 217 ha->host_no, cmd->device->channel, 218 cmd->device->id, cmd->device->lun)); 219 220 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 221 222 /* 223 * Mark device missing so that we won't continue to send 224 * I/O to this device. We should get a ddb state change 225 * AEN soon. 226 */ 227 if (iscsi_is_session_online(ddb_entry->sess)) 228 qla4xxx_mark_device_missing(ddb_entry->sess); 229 break; 230 231 case SCS_DATA_UNDERRUN: 232 case SCS_DATA_OVERRUN: 233 if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) || 234 (sts_entry->completionStatus == SCS_DATA_OVERRUN)) { 235 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n", 236 ha->host_no, 237 cmd->device->channel, cmd->device->id, 238 cmd->device->lun, __func__)); 239 240 cmd->result = DID_ERROR << 16; 241 break; 242 } 243 244 scsi_set_resid(cmd, residual); 245 246 /* 247 * If there is scsi_status, it takes precedense over 248 * underflow condition. 249 */ 250 if (scsi_status != 0) { 251 cmd->result = DID_OK << 16 | scsi_status; 252 253 if (scsi_status != SCSI_CHECK_CONDITION) 254 break; 255 256 /* Copy Sense Data into sense buffer. */ 257 qla4xxx_copy_sense(ha, sts_entry, srb); 258 } else { 259 /* 260 * If RISC reports underrun and target does not 261 * report it then we must have a lost frame, so 262 * tell upper layer to retry it by reporting a 263 * bus busy. 264 */ 265 if ((sts_entry->iscsiFlags & 266 ISCSI_FLAG_RESIDUAL_UNDER) == 0) { 267 cmd->result = DID_BUS_BUSY << 16; 268 } else if ((scsi_bufflen(cmd) - residual) < 269 cmd->underflow) { 270 /* 271 * Handle mid-layer underflow??? 272 * 273 * For kernels less than 2.4, the driver must 274 * return an error if an underflow is detected. 275 * For kernels equal-to and above 2.4, the 276 * mid-layer will appearantly handle the 277 * underflow by detecting the residual count -- 278 * unfortunately, we do not see where this is 279 * actually being done. In the interim, we 280 * will return DID_ERROR. 281 */ 282 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " 283 "Mid-layer Data underrun1, " 284 "xferlen = 0x%x, " 285 "residual = 0x%x\n", ha->host_no, 286 cmd->device->channel, 287 cmd->device->id, 288 cmd->device->lun, __func__, 289 scsi_bufflen(cmd), residual)); 290 291 cmd->result = DID_ERROR << 16; 292 } else { 293 cmd->result = DID_OK << 16; 294 } 295 } 296 break; 297 298 case SCS_DEVICE_LOGGED_OUT: 299 case SCS_DEVICE_UNAVAILABLE: 300 DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: SCS_DEVICE " 301 "state: 0x%x\n", ha->host_no, 302 cmd->device->channel, cmd->device->id, 303 cmd->device->lun, sts_entry->completionStatus)); 304 /* 305 * Mark device missing so that we won't continue to 306 * send I/O to this device. We should get a ddb 307 * state change AEN soon. 308 */ 309 if (iscsi_is_session_online(ddb_entry->sess)) 310 qla4xxx_mark_device_missing(ddb_entry->sess); 311 312 cmd->result = DID_TRANSPORT_DISRUPTED << 16; 313 break; 314 315 case SCS_QUEUE_FULL: 316 /* 317 * SCSI Mid-Layer handles device queue full 318 */ 319 cmd->result = DID_OK << 16 | sts_entry->scsiStatus; 320 DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected " 321 "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x," 322 " iResp=%02x\n", ha->host_no, cmd->device->id, 323 cmd->device->lun, __func__, 324 sts_entry->completionStatus, 325 sts_entry->scsiStatus, sts_entry->state_flags, 326 sts_entry->iscsiFlags, 327 sts_entry->iscsiResponse)); 328 break; 329 330 default: 331 cmd->result = DID_ERROR << 16; 332 break; 333 } 334 335 status_entry_exit: 336 337 /* complete the request, if not waiting for status_continuation pkt */ 338 srb->cc_stat = sts_entry->completionStatus; 339 if (ha->status_srb == NULL) 340 kref_put(&srb->srb_ref, qla4xxx_srb_compl); 341 } 342 343 /** 344 * qla4xxx_passthru_status_entry - processes passthru status IOCBs (0x3C) 345 * @ha: Pointer to host adapter structure. 346 * @sts_entry: Pointer to status entry structure. 347 **/ 348 static void qla4xxx_passthru_status_entry(struct scsi_qla_host *ha, 349 struct passthru_status *sts_entry) 350 { 351 struct iscsi_task *task; 352 struct ddb_entry *ddb_entry; 353 struct ql4_task_data *task_data; 354 struct iscsi_cls_conn *cls_conn; 355 struct iscsi_conn *conn; 356 itt_t itt; 357 uint32_t fw_ddb_index; 358 359 itt = sts_entry->handle; 360 fw_ddb_index = le32_to_cpu(sts_entry->target); 361 362 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index); 363 364 if (ddb_entry == NULL) { 365 ql4_printk(KERN_ERR, ha, "%s: Invalid target index = 0x%x\n", 366 __func__, sts_entry->target); 367 return; 368 } 369 370 cls_conn = ddb_entry->conn; 371 conn = cls_conn->dd_data; 372 spin_lock(&conn->session->lock); 373 task = iscsi_itt_to_task(conn, itt); 374 spin_unlock(&conn->session->lock); 375 376 if (task == NULL) { 377 ql4_printk(KERN_ERR, ha, "%s: Task is NULL\n", __func__); 378 return; 379 } 380 381 task_data = task->dd_data; 382 memcpy(&task_data->sts, sts_entry, sizeof(struct passthru_status)); 383 ha->req_q_count += task_data->iocb_req_cnt; 384 ha->iocb_cnt -= task_data->iocb_req_cnt; 385 queue_work(ha->task_wq, &task_data->task_work); 386 } 387 388 static struct mrb *qla4xxx_del_mrb_from_active_array(struct scsi_qla_host *ha, 389 uint32_t index) 390 { 391 struct mrb *mrb = NULL; 392 393 /* validate handle and remove from active array */ 394 if (index >= MAX_MRB) 395 return mrb; 396 397 mrb = ha->active_mrb_array[index]; 398 ha->active_mrb_array[index] = NULL; 399 if (!mrb) 400 return mrb; 401 402 /* update counters */ 403 ha->req_q_count += mrb->iocb_cnt; 404 ha->iocb_cnt -= mrb->iocb_cnt; 405 406 return mrb; 407 } 408 409 static void qla4xxx_mbox_status_entry(struct scsi_qla_host *ha, 410 struct mbox_status_iocb *mbox_sts_entry) 411 { 412 struct mrb *mrb; 413 uint32_t status; 414 uint32_t data_size; 415 416 mrb = qla4xxx_del_mrb_from_active_array(ha, 417 le32_to_cpu(mbox_sts_entry->handle)); 418 419 if (mrb == NULL) { 420 ql4_printk(KERN_WARNING, ha, "%s: mrb[%d] is null\n", __func__, 421 mbox_sts_entry->handle); 422 return; 423 } 424 425 switch (mrb->mbox_cmd) { 426 case MBOX_CMD_PING: 427 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: mbox_cmd = 0x%x, " 428 "mbox_sts[0] = 0x%x, mbox_sts[6] = 0x%x\n", 429 __func__, mrb->mbox_cmd, 430 mbox_sts_entry->out_mbox[0], 431 mbox_sts_entry->out_mbox[6])); 432 433 if (mbox_sts_entry->out_mbox[0] == MBOX_STS_COMMAND_COMPLETE) 434 status = ISCSI_PING_SUCCESS; 435 else 436 status = mbox_sts_entry->out_mbox[6]; 437 438 data_size = sizeof(mbox_sts_entry->out_mbox); 439 440 qla4xxx_post_ping_evt_work(ha, status, mrb->pid, data_size, 441 (uint8_t *) mbox_sts_entry->out_mbox); 442 break; 443 444 default: 445 DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: invalid mbox_cmd = " 446 "0x%x\n", __func__, mrb->mbox_cmd)); 447 } 448 449 kfree(mrb); 450 return; 451 } 452 453 /** 454 * qla4xxx_process_response_queue - process response queue completions 455 * @ha: Pointer to host adapter structure. 456 * 457 * This routine process response queue completions in interrupt context. 458 * Hardware_lock locked upon entry 459 **/ 460 void qla4xxx_process_response_queue(struct scsi_qla_host *ha) 461 { 462 uint32_t count = 0; 463 struct srb *srb = NULL; 464 struct status_entry *sts_entry; 465 466 /* Process all responses from response queue */ 467 while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) { 468 sts_entry = (struct status_entry *) ha->response_ptr; 469 count++; 470 471 /* Advance pointers for next entry */ 472 if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) { 473 ha->response_out = 0; 474 ha->response_ptr = ha->response_ring; 475 } else { 476 ha->response_out++; 477 ha->response_ptr++; 478 } 479 480 /* process entry */ 481 switch (sts_entry->hdr.entryType) { 482 case ET_STATUS: 483 /* Common status */ 484 qla4xxx_status_entry(ha, sts_entry); 485 break; 486 487 case ET_PASSTHRU_STATUS: 488 if (sts_entry->hdr.systemDefined == SD_ISCSI_PDU) 489 qla4xxx_passthru_status_entry(ha, 490 (struct passthru_status *)sts_entry); 491 else 492 ql4_printk(KERN_ERR, ha, 493 "%s: Invalid status received\n", 494 __func__); 495 496 break; 497 498 case ET_STATUS_CONTINUATION: 499 qla4xxx_status_cont_entry(ha, 500 (struct status_cont_entry *) sts_entry); 501 break; 502 503 case ET_COMMAND: 504 /* ISP device queue is full. Command not 505 * accepted by ISP. Queue command for 506 * later */ 507 508 srb = qla4xxx_del_from_active_array(ha, 509 le32_to_cpu(sts_entry-> 510 handle)); 511 if (srb == NULL) 512 goto exit_prq_invalid_handle; 513 514 DEBUG2(printk("scsi%ld: %s: FW device queue full, " 515 "srb %p\n", ha->host_no, __func__, srb)); 516 517 /* ETRY normally by sending it back with 518 * DID_BUS_BUSY */ 519 srb->cmd->result = DID_BUS_BUSY << 16; 520 kref_put(&srb->srb_ref, qla4xxx_srb_compl); 521 break; 522 523 case ET_CONTINUE: 524 /* Just throw away the continuation entries */ 525 DEBUG2(printk("scsi%ld: %s: Continuation entry - " 526 "ignoring\n", ha->host_no, __func__)); 527 break; 528 529 case ET_MBOX_STATUS: 530 DEBUG2(ql4_printk(KERN_INFO, ha, 531 "%s: mbox status IOCB\n", __func__)); 532 qla4xxx_mbox_status_entry(ha, 533 (struct mbox_status_iocb *)sts_entry); 534 break; 535 536 default: 537 /* 538 * Invalid entry in response queue, reset RISC 539 * firmware. 540 */ 541 DEBUG2(printk("scsi%ld: %s: Invalid entry %x in " 542 "response queue \n", ha->host_no, 543 __func__, 544 sts_entry->hdr.entryType)); 545 goto exit_prq_error; 546 } 547 ((struct response *)sts_entry)->signature = RESPONSE_PROCESSED; 548 wmb(); 549 } 550 551 /* 552 * Tell ISP we're done with response(s). This also clears the interrupt. 553 */ 554 ha->isp_ops->complete_iocb(ha); 555 556 return; 557 558 exit_prq_invalid_handle: 559 DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n", 560 ha->host_no, __func__, srb, sts_entry->hdr.entryType, 561 sts_entry->completionStatus)); 562 563 exit_prq_error: 564 ha->isp_ops->complete_iocb(ha); 565 set_bit(DPC_RESET_HA, &ha->dpc_flags); 566 } 567 568 /** 569 * qla4xxx_isr_decode_mailbox - decodes mailbox status 570 * @ha: Pointer to host adapter structure. 571 * @mailbox_status: Mailbox status. 572 * 573 * This routine decodes the mailbox status during the ISR. 574 * Hardware_lock locked upon entry. runs in interrupt context. 575 **/ 576 static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, 577 uint32_t mbox_status) 578 { 579 int i; 580 uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; 581 582 if ((mbox_status == MBOX_STS_BUSY) || 583 (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) || 584 (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) { 585 ha->mbox_status[0] = mbox_status; 586 587 if (test_bit(AF_MBOX_COMMAND, &ha->flags)) { 588 /* 589 * Copy all mailbox registers to a temporary 590 * location and set mailbox command done flag 591 */ 592 for (i = 0; i < ha->mbox_status_count; i++) 593 ha->mbox_status[i] = is_qla8022(ha) 594 ? readl(&ha->qla4_8xxx_reg->mailbox_out[i]) 595 : readl(&ha->reg->mailbox[i]); 596 597 set_bit(AF_MBOX_COMMAND_DONE, &ha->flags); 598 599 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) 600 complete(&ha->mbx_intr_comp); 601 } 602 } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) { 603 for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 604 mbox_sts[i] = is_qla8022(ha) 605 ? readl(&ha->qla4_8xxx_reg->mailbox_out[i]) 606 : readl(&ha->reg->mailbox[i]); 607 608 /* Immediately process the AENs that don't require much work. 609 * Only queue the database_changed AENs */ 610 if (ha->aen_log.count < MAX_AEN_ENTRIES) { 611 for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 612 ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] = 613 mbox_sts[i]; 614 ha->aen_log.count++; 615 } 616 switch (mbox_status) { 617 case MBOX_ASTS_SYSTEM_ERROR: 618 /* Log Mailbox registers */ 619 ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__); 620 qla4xxx_dump_registers(ha); 621 622 if (ql4xdontresethba) { 623 DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n", 624 ha->host_no, __func__)); 625 } else { 626 set_bit(AF_GET_CRASH_RECORD, &ha->flags); 627 set_bit(DPC_RESET_HA, &ha->dpc_flags); 628 } 629 break; 630 631 case MBOX_ASTS_REQUEST_TRANSFER_ERROR: 632 case MBOX_ASTS_RESPONSE_TRANSFER_ERROR: 633 case MBOX_ASTS_NVRAM_INVALID: 634 case MBOX_ASTS_IP_ADDRESS_CHANGED: 635 case MBOX_ASTS_DHCP_LEASE_EXPIRED: 636 DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, " 637 "Reset HA\n", ha->host_no, mbox_status)); 638 if (is_qla8022(ha)) 639 set_bit(DPC_RESET_HA_FW_CONTEXT, 640 &ha->dpc_flags); 641 else 642 set_bit(DPC_RESET_HA, &ha->dpc_flags); 643 break; 644 645 case MBOX_ASTS_LINK_UP: 646 set_bit(AF_LINK_UP, &ha->flags); 647 if (test_bit(AF_INIT_DONE, &ha->flags)) 648 set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); 649 650 ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__); 651 qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKUP, 652 sizeof(mbox_sts), 653 (uint8_t *) mbox_sts); 654 break; 655 656 case MBOX_ASTS_LINK_DOWN: 657 clear_bit(AF_LINK_UP, &ha->flags); 658 if (test_bit(AF_INIT_DONE, &ha->flags)) 659 set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); 660 661 ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__); 662 qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN, 663 sizeof(mbox_sts), 664 (uint8_t *) mbox_sts); 665 break; 666 667 case MBOX_ASTS_HEARTBEAT: 668 ha->seconds_since_last_heartbeat = 0; 669 break; 670 671 case MBOX_ASTS_DHCP_LEASE_ACQUIRED: 672 DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE " 673 "ACQUIRED\n", ha->host_no, mbox_status)); 674 set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); 675 break; 676 677 case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM: 678 case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target 679 * mode 680 * only */ 681 case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */ 682 case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR: 683 case MBOX_ASTS_SUBNET_STATE_CHANGE: 684 case MBOX_ASTS_DUPLICATE_IP: 685 /* No action */ 686 DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no, 687 mbox_status)); 688 break; 689 690 case MBOX_ASTS_IP_ADDR_STATE_CHANGED: 691 printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, " 692 "mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0], 693 mbox_sts[2], mbox_sts[3]); 694 695 /* mbox_sts[2] = Old ACB state 696 * mbox_sts[3] = new ACB state */ 697 if ((mbox_sts[3] == ACB_STATE_VALID) && 698 ((mbox_sts[2] == ACB_STATE_TENTATIVE) || 699 (mbox_sts[2] == ACB_STATE_ACQUIRING))) 700 set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); 701 else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) && 702 (mbox_sts[2] == ACB_STATE_VALID)) { 703 if (is_qla8022(ha)) 704 set_bit(DPC_RESET_HA_FW_CONTEXT, 705 &ha->dpc_flags); 706 else 707 set_bit(DPC_RESET_HA, &ha->dpc_flags); 708 } else if ((mbox_sts[3] == ACB_STATE_UNCONFIGURED)) 709 complete(&ha->disable_acb_comp); 710 break; 711 712 case MBOX_ASTS_MAC_ADDRESS_CHANGED: 713 case MBOX_ASTS_DNS: 714 /* No action */ 715 DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, " 716 "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n", 717 ha->host_no, mbox_sts[0], 718 mbox_sts[1], mbox_sts[2])); 719 break; 720 721 case MBOX_ASTS_SELF_TEST_FAILED: 722 case MBOX_ASTS_LOGIN_FAILED: 723 /* No action */ 724 DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, " 725 "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n", 726 ha->host_no, mbox_sts[0], mbox_sts[1], 727 mbox_sts[2], mbox_sts[3])); 728 break; 729 730 case MBOX_ASTS_DATABASE_CHANGED: 731 /* Queue AEN information and process it in the DPC 732 * routine */ 733 if (ha->aen_q_count > 0) { 734 735 /* decrement available counter */ 736 ha->aen_q_count--; 737 738 for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 739 ha->aen_q[ha->aen_in].mbox_sts[i] = 740 mbox_sts[i]; 741 742 /* print debug message */ 743 DEBUG2(printk("scsi%ld: AEN[%d] %04x queued " 744 "mb1:0x%x mb2:0x%x mb3:0x%x " 745 "mb4:0x%x mb5:0x%x\n", 746 ha->host_no, ha->aen_in, 747 mbox_sts[0], mbox_sts[1], 748 mbox_sts[2], mbox_sts[3], 749 mbox_sts[4], mbox_sts[5])); 750 751 /* advance pointer */ 752 ha->aen_in++; 753 if (ha->aen_in == MAX_AEN_ENTRIES) 754 ha->aen_in = 0; 755 756 /* The DPC routine will process the aen */ 757 set_bit(DPC_AEN, &ha->dpc_flags); 758 } else { 759 DEBUG2(printk("scsi%ld: %s: aen %04x, queue " 760 "overflowed! AEN LOST!!\n", 761 ha->host_no, __func__, 762 mbox_sts[0])); 763 764 DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n", 765 ha->host_no)); 766 767 for (i = 0; i < MAX_AEN_ENTRIES; i++) { 768 DEBUG2(printk("AEN[%d] %04x %04x %04x " 769 "%04x\n", i, mbox_sts[0], 770 mbox_sts[1], mbox_sts[2], 771 mbox_sts[3])); 772 } 773 } 774 break; 775 776 case MBOX_ASTS_TXSCVR_INSERTED: 777 DEBUG2(printk(KERN_WARNING 778 "scsi%ld: AEN %04x Transceiver" 779 " inserted\n", ha->host_no, mbox_sts[0])); 780 break; 781 782 case MBOX_ASTS_TXSCVR_REMOVED: 783 DEBUG2(printk(KERN_WARNING 784 "scsi%ld: AEN %04x Transceiver" 785 " removed\n", ha->host_no, mbox_sts[0])); 786 break; 787 788 default: 789 DEBUG2(printk(KERN_WARNING 790 "scsi%ld: AEN %04x UNKNOWN\n", 791 ha->host_no, mbox_sts[0])); 792 break; 793 } 794 } else { 795 DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n", 796 ha->host_no, mbox_status)); 797 798 ha->mbox_status[0] = mbox_status; 799 } 800 } 801 802 /** 803 * qla4_8xxx_interrupt_service_routine - isr 804 * @ha: pointer to host adapter structure. 805 * 806 * This is the main interrupt service routine. 807 * hardware_lock locked upon entry. runs in interrupt context. 808 **/ 809 void qla4_8xxx_interrupt_service_routine(struct scsi_qla_host *ha, 810 uint32_t intr_status) 811 { 812 /* Process response queue interrupt. */ 813 if (intr_status & HSRX_RISC_IOCB_INT) 814 qla4xxx_process_response_queue(ha); 815 816 /* Process mailbox/asynch event interrupt.*/ 817 if (intr_status & HSRX_RISC_MB_INT) 818 qla4xxx_isr_decode_mailbox(ha, 819 readl(&ha->qla4_8xxx_reg->mailbox_out[0])); 820 821 /* clear the interrupt */ 822 writel(0, &ha->qla4_8xxx_reg->host_int); 823 readl(&ha->qla4_8xxx_reg->host_int); 824 } 825 826 /** 827 * qla4xxx_interrupt_service_routine - isr 828 * @ha: pointer to host adapter structure. 829 * 830 * This is the main interrupt service routine. 831 * hardware_lock locked upon entry. runs in interrupt context. 832 **/ 833 void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha, 834 uint32_t intr_status) 835 { 836 /* Process response queue interrupt. */ 837 if (intr_status & CSR_SCSI_COMPLETION_INTR) 838 qla4xxx_process_response_queue(ha); 839 840 /* Process mailbox/asynch event interrupt.*/ 841 if (intr_status & CSR_SCSI_PROCESSOR_INTR) { 842 qla4xxx_isr_decode_mailbox(ha, 843 readl(&ha->reg->mailbox[0])); 844 845 /* Clear Mailbox Interrupt */ 846 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR), 847 &ha->reg->ctrl_status); 848 readl(&ha->reg->ctrl_status); 849 } 850 } 851 852 /** 853 * qla4_8xxx_spurious_interrupt - processes spurious interrupt 854 * @ha: pointer to host adapter structure. 855 * @reqs_count: . 856 * 857 **/ 858 static void qla4_8xxx_spurious_interrupt(struct scsi_qla_host *ha, 859 uint8_t reqs_count) 860 { 861 if (reqs_count) 862 return; 863 864 DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n")); 865 if (is_qla8022(ha)) { 866 writel(0, &ha->qla4_8xxx_reg->host_int); 867 if (test_bit(AF_INTx_ENABLED, &ha->flags)) 868 qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 869 0xfbff); 870 } 871 ha->spurious_int_count++; 872 } 873 874 /** 875 * qla4xxx_intr_handler - hardware interrupt handler. 876 * @irq: Unused 877 * @dev_id: Pointer to host adapter structure 878 **/ 879 irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id) 880 { 881 struct scsi_qla_host *ha; 882 uint32_t intr_status; 883 unsigned long flags = 0; 884 uint8_t reqs_count = 0; 885 886 ha = (struct scsi_qla_host *) dev_id; 887 if (!ha) { 888 DEBUG2(printk(KERN_INFO 889 "qla4xxx: Interrupt with NULL host ptr\n")); 890 return IRQ_NONE; 891 } 892 893 spin_lock_irqsave(&ha->hardware_lock, flags); 894 895 ha->isr_count++; 896 /* 897 * Repeatedly service interrupts up to a maximum of 898 * MAX_REQS_SERVICED_PER_INTR 899 */ 900 while (1) { 901 /* 902 * Read interrupt status 903 */ 904 if (ha->isp_ops->rd_shdw_rsp_q_in(ha) != 905 ha->response_out) 906 intr_status = CSR_SCSI_COMPLETION_INTR; 907 else 908 intr_status = readl(&ha->reg->ctrl_status); 909 910 if ((intr_status & 911 (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == 0) { 912 if (reqs_count == 0) 913 ha->spurious_int_count++; 914 break; 915 } 916 917 if (intr_status & CSR_FATAL_ERROR) { 918 DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, " 919 "Status 0x%04x\n", ha->host_no, 920 readl(isp_port_error_status (ha)))); 921 922 /* Issue Soft Reset to clear this error condition. 923 * This will prevent the RISC from repeatedly 924 * interrupting the driver; thus, allowing the DPC to 925 * get scheduled to continue error recovery. 926 * NOTE: Disabling RISC interrupts does not work in 927 * this case, as CSR_FATAL_ERROR overrides 928 * CSR_SCSI_INTR_ENABLE */ 929 if ((readl(&ha->reg->ctrl_status) & 930 CSR_SCSI_RESET_INTR) == 0) { 931 writel(set_rmask(CSR_SOFT_RESET), 932 &ha->reg->ctrl_status); 933 readl(&ha->reg->ctrl_status); 934 } 935 936 writel(set_rmask(CSR_FATAL_ERROR), 937 &ha->reg->ctrl_status); 938 readl(&ha->reg->ctrl_status); 939 940 __qla4xxx_disable_intrs(ha); 941 942 set_bit(DPC_RESET_HA, &ha->dpc_flags); 943 944 break; 945 } else if (intr_status & CSR_SCSI_RESET_INTR) { 946 clear_bit(AF_ONLINE, &ha->flags); 947 __qla4xxx_disable_intrs(ha); 948 949 writel(set_rmask(CSR_SCSI_RESET_INTR), 950 &ha->reg->ctrl_status); 951 readl(&ha->reg->ctrl_status); 952 953 if (!test_bit(AF_HA_REMOVAL, &ha->flags)) 954 set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 955 956 break; 957 } else if (intr_status & INTR_PENDING) { 958 ha->isp_ops->interrupt_service_routine(ha, intr_status); 959 ha->total_io_count++; 960 if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) 961 break; 962 } 963 } 964 965 spin_unlock_irqrestore(&ha->hardware_lock, flags); 966 967 return IRQ_HANDLED; 968 } 969 970 /** 971 * qla4_8xxx_intr_handler - hardware interrupt handler. 972 * @irq: Unused 973 * @dev_id: Pointer to host adapter structure 974 **/ 975 irqreturn_t qla4_8xxx_intr_handler(int irq, void *dev_id) 976 { 977 struct scsi_qla_host *ha = dev_id; 978 uint32_t intr_status; 979 uint32_t status; 980 unsigned long flags = 0; 981 uint8_t reqs_count = 0; 982 983 if (unlikely(pci_channel_offline(ha->pdev))) 984 return IRQ_HANDLED; 985 986 ha->isr_count++; 987 status = qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); 988 if (!(status & ha->nx_legacy_intr.int_vec_bit)) 989 return IRQ_NONE; 990 991 status = qla4_8xxx_rd_32(ha, ISR_INT_STATE_REG); 992 if (!ISR_IS_LEGACY_INTR_TRIGGERED(status)) { 993 DEBUG2(ql4_printk(KERN_INFO, ha, 994 "%s legacy Int not triggered\n", __func__)); 995 return IRQ_NONE; 996 } 997 998 /* clear the interrupt */ 999 qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff); 1000 1001 /* read twice to ensure write is flushed */ 1002 qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); 1003 qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); 1004 1005 spin_lock_irqsave(&ha->hardware_lock, flags); 1006 while (1) { 1007 if (!(readl(&ha->qla4_8xxx_reg->host_int) & 1008 ISRX_82XX_RISC_INT)) { 1009 qla4_8xxx_spurious_interrupt(ha, reqs_count); 1010 break; 1011 } 1012 intr_status = readl(&ha->qla4_8xxx_reg->host_status); 1013 if ((intr_status & 1014 (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) { 1015 qla4_8xxx_spurious_interrupt(ha, reqs_count); 1016 break; 1017 } 1018 1019 ha->isp_ops->interrupt_service_routine(ha, intr_status); 1020 1021 /* Enable Interrupt */ 1022 qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff); 1023 1024 if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) 1025 break; 1026 } 1027 1028 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1029 return IRQ_HANDLED; 1030 } 1031 1032 irqreturn_t 1033 qla4_8xxx_msi_handler(int irq, void *dev_id) 1034 { 1035 struct scsi_qla_host *ha; 1036 1037 ha = (struct scsi_qla_host *) dev_id; 1038 if (!ha) { 1039 DEBUG2(printk(KERN_INFO 1040 "qla4xxx: MSIX: Interrupt with NULL host ptr\n")); 1041 return IRQ_NONE; 1042 } 1043 1044 ha->isr_count++; 1045 /* clear the interrupt */ 1046 qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff); 1047 1048 /* read twice to ensure write is flushed */ 1049 qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); 1050 qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); 1051 1052 return qla4_8xxx_default_intr_handler(irq, dev_id); 1053 } 1054 1055 /** 1056 * qla4_8xxx_default_intr_handler - hardware interrupt handler. 1057 * @irq: Unused 1058 * @dev_id: Pointer to host adapter structure 1059 * 1060 * This interrupt handler is called directly for MSI-X, and 1061 * called indirectly for MSI. 1062 **/ 1063 irqreturn_t 1064 qla4_8xxx_default_intr_handler(int irq, void *dev_id) 1065 { 1066 struct scsi_qla_host *ha = dev_id; 1067 unsigned long flags; 1068 uint32_t intr_status; 1069 uint8_t reqs_count = 0; 1070 1071 spin_lock_irqsave(&ha->hardware_lock, flags); 1072 while (1) { 1073 if (!(readl(&ha->qla4_8xxx_reg->host_int) & 1074 ISRX_82XX_RISC_INT)) { 1075 qla4_8xxx_spurious_interrupt(ha, reqs_count); 1076 break; 1077 } 1078 1079 intr_status = readl(&ha->qla4_8xxx_reg->host_status); 1080 if ((intr_status & 1081 (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) { 1082 qla4_8xxx_spurious_interrupt(ha, reqs_count); 1083 break; 1084 } 1085 1086 ha->isp_ops->interrupt_service_routine(ha, intr_status); 1087 1088 if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) 1089 break; 1090 } 1091 1092 ha->isr_count++; 1093 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1094 return IRQ_HANDLED; 1095 } 1096 1097 irqreturn_t 1098 qla4_8xxx_msix_rsp_q(int irq, void *dev_id) 1099 { 1100 struct scsi_qla_host *ha = dev_id; 1101 unsigned long flags; 1102 1103 spin_lock_irqsave(&ha->hardware_lock, flags); 1104 qla4xxx_process_response_queue(ha); 1105 writel(0, &ha->qla4_8xxx_reg->host_int); 1106 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1107 1108 ha->isr_count++; 1109 return IRQ_HANDLED; 1110 } 1111 1112 /** 1113 * qla4xxx_process_aen - processes AENs generated by firmware 1114 * @ha: pointer to host adapter structure. 1115 * @process_aen: type of AENs to process 1116 * 1117 * Processes specific types of Asynchronous Events generated by firmware. 1118 * The type of AENs to process is specified by process_aen and can be 1119 * PROCESS_ALL_AENS 0 1120 * FLUSH_DDB_CHANGED_AENS 1 1121 * RELOGIN_DDB_CHANGED_AENS 2 1122 **/ 1123 void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen) 1124 { 1125 uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; 1126 struct aen *aen; 1127 int i; 1128 unsigned long flags; 1129 1130 spin_lock_irqsave(&ha->hardware_lock, flags); 1131 while (ha->aen_out != ha->aen_in) { 1132 aen = &ha->aen_q[ha->aen_out]; 1133 /* copy aen information to local structure */ 1134 for (i = 0; i < MBOX_AEN_REG_COUNT; i++) 1135 mbox_sts[i] = aen->mbox_sts[i]; 1136 1137 ha->aen_q_count++; 1138 ha->aen_out++; 1139 1140 if (ha->aen_out == MAX_AEN_ENTRIES) 1141 ha->aen_out = 0; 1142 1143 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1144 1145 DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x" 1146 " mbx3=0x%08x mbx4=0x%08x\n", ha->host_no, 1147 (ha->aen_out ? (ha->aen_out-1): (MAX_AEN_ENTRIES-1)), 1148 mbox_sts[0], mbox_sts[1], mbox_sts[2], 1149 mbox_sts[3], mbox_sts[4])); 1150 1151 switch (mbox_sts[0]) { 1152 case MBOX_ASTS_DATABASE_CHANGED: 1153 switch (process_aen) { 1154 case FLUSH_DDB_CHANGED_AENS: 1155 DEBUG2(printk("scsi%ld: AEN[%d] %04x, index " 1156 "[%d] state=%04x FLUSHED!\n", 1157 ha->host_no, ha->aen_out, 1158 mbox_sts[0], mbox_sts[2], 1159 mbox_sts[3])); 1160 break; 1161 case PROCESS_ALL_AENS: 1162 default: 1163 /* Specific device. */ 1164 if (mbox_sts[1] == 1) 1165 qla4xxx_process_ddb_changed(ha, 1166 mbox_sts[2], mbox_sts[3], 1167 mbox_sts[4]); 1168 break; 1169 } 1170 } 1171 spin_lock_irqsave(&ha->hardware_lock, flags); 1172 } 1173 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1174 } 1175 1176 int qla4xxx_request_irqs(struct scsi_qla_host *ha) 1177 { 1178 int ret; 1179 1180 if (!is_qla8022(ha)) 1181 goto try_intx; 1182 1183 if (ql4xenablemsix == 2) 1184 goto try_msi; 1185 1186 if (ql4xenablemsix == 0 || ql4xenablemsix != 1) 1187 goto try_intx; 1188 1189 /* Trying MSI-X */ 1190 ret = qla4_8xxx_enable_msix(ha); 1191 if (!ret) { 1192 DEBUG2(ql4_printk(KERN_INFO, ha, 1193 "MSI-X: Enabled (0x%X).\n", ha->revision_id)); 1194 goto irq_attached; 1195 } 1196 1197 ql4_printk(KERN_WARNING, ha, 1198 "MSI-X: Falling back-to MSI mode -- %d.\n", ret); 1199 1200 try_msi: 1201 /* Trying MSI */ 1202 ret = pci_enable_msi(ha->pdev); 1203 if (!ret) { 1204 ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler, 1205 0, DRIVER_NAME, ha); 1206 if (!ret) { 1207 DEBUG2(ql4_printk(KERN_INFO, ha, "MSI: Enabled.\n")); 1208 set_bit(AF_MSI_ENABLED, &ha->flags); 1209 goto irq_attached; 1210 } else { 1211 ql4_printk(KERN_WARNING, ha, 1212 "MSI: Failed to reserve interrupt %d " 1213 "already in use.\n", ha->pdev->irq); 1214 pci_disable_msi(ha->pdev); 1215 } 1216 } 1217 ql4_printk(KERN_WARNING, ha, 1218 "MSI: Falling back-to INTx mode -- %d.\n", ret); 1219 1220 try_intx: 1221 /* Trying INTx */ 1222 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler, 1223 IRQF_SHARED, DRIVER_NAME, ha); 1224 if (!ret) { 1225 DEBUG2(ql4_printk(KERN_INFO, ha, "INTx: Enabled.\n")); 1226 set_bit(AF_INTx_ENABLED, &ha->flags); 1227 goto irq_attached; 1228 1229 } else { 1230 ql4_printk(KERN_WARNING, ha, 1231 "INTx: Failed to reserve interrupt %d already in" 1232 " use.\n", ha->pdev->irq); 1233 return ret; 1234 } 1235 1236 irq_attached: 1237 set_bit(AF_IRQ_ATTACHED, &ha->flags); 1238 ha->host->irq = ha->pdev->irq; 1239 ql4_printk(KERN_INFO, ha, "%s: irq %d attached\n", 1240 __func__, ha->pdev->irq); 1241 return ret; 1242 } 1243 1244 void qla4xxx_free_irqs(struct scsi_qla_host *ha) 1245 { 1246 if (test_bit(AF_MSIX_ENABLED, &ha->flags)) 1247 qla4_8xxx_disable_msix(ha); 1248 else if (test_and_clear_bit(AF_MSI_ENABLED, &ha->flags)) { 1249 free_irq(ha->pdev->irq, ha); 1250 pci_disable_msi(ha->pdev); 1251 } else if (test_and_clear_bit(AF_INTx_ENABLED, &ha->flags)) 1252 free_irq(ha->pdev->irq, ha); 1253 } 1254