1 /* 2 * QLOGIC LINUX SOFTWARE 3 * 4 * QLogic ISP2x00 device driver for Linux 2.6.x 5 * Copyright (C) 2003-2004 QLogic Corporation 6 * (www.qlogic.com) 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2, or (at your option) any 11 * later version. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 */ 19 #include "qla_def.h" 20 21 #include <linux/moduleparam.h> 22 #include <linux/vmalloc.h> 23 #include <linux/smp_lock.h> 24 #include <linux/delay.h> 25 26 #include <scsi/scsi_tcq.h> 27 #include <scsi/scsicam.h> 28 #include <scsi/scsi_transport.h> 29 #include <scsi/scsi_transport_fc.h> 30 31 /* 32 * Driver version 33 */ 34 char qla2x00_version_str[40]; 35 36 /* 37 * SRB allocation cache 38 */ 39 static kmem_cache_t *srb_cachep; 40 41 /* 42 * Ioctl related information. 43 */ 44 static int num_hosts; 45 46 int ql2xlogintimeout = 20; 47 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR); 48 MODULE_PARM_DESC(ql2xlogintimeout, 49 "Login timeout value in seconds."); 50 51 int qlport_down_retry = 30; 52 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR); 53 MODULE_PARM_DESC(qlport_down_retry, 54 "Maximum number of command retries to a port that returns" 55 "a PORT-DOWN status."); 56 57 int ql2xplogiabsentdevice; 58 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR); 59 MODULE_PARM_DESC(ql2xplogiabsentdevice, 60 "Option to enable PLOGI to devices that are not present after " 61 "a Fabric scan. This is needed for several broken switches." 62 "Default is 0 - no PLOGI. 1 - perfom PLOGI."); 63 64 int ql2xenablezio = 0; 65 module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR); 66 MODULE_PARM_DESC(ql2xenablezio, 67 "Option to enable ZIO:If 1 then enable it otherwise" 68 " use the default set in the NVRAM." 69 " Default is 0 : disabled"); 70 71 int ql2xintrdelaytimer = 10; 72 module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR); 73 MODULE_PARM_DESC(ql2xintrdelaytimer, 74 "ZIO: Waiting time for Firmware before it generates an " 75 "interrupt to the host to notify completion of request."); 76 77 int ql2xloginretrycount = 0; 78 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR); 79 MODULE_PARM_DESC(ql2xloginretrycount, 80 "Specify an alternate value for the NVRAM login retry count."); 81 82 static void qla2x00_free_device(scsi_qla_host_t *); 83 84 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha); 85 86 /* 87 * SCSI host template entry points 88 */ 89 static int qla2xxx_slave_configure(struct scsi_device * device); 90 static int qla2xxx_slave_alloc(struct scsi_device *); 91 static void qla2xxx_slave_destroy(struct scsi_device *); 92 static int qla2x00_queuecommand(struct scsi_cmnd *cmd, 93 void (*fn)(struct scsi_cmnd *)); 94 static int qla2xxx_eh_abort(struct scsi_cmnd *); 95 static int qla2xxx_eh_device_reset(struct scsi_cmnd *); 96 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *); 97 static int qla2xxx_eh_host_reset(struct scsi_cmnd *); 98 static int qla2x00_loop_reset(scsi_qla_host_t *ha); 99 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *); 100 101 static struct scsi_host_template qla2x00_driver_template = { 102 .module = THIS_MODULE, 103 .name = "qla2xxx", 104 .queuecommand = qla2x00_queuecommand, 105 106 .eh_abort_handler = qla2xxx_eh_abort, 107 .eh_device_reset_handler = qla2xxx_eh_device_reset, 108 .eh_bus_reset_handler = qla2xxx_eh_bus_reset, 109 .eh_host_reset_handler = qla2xxx_eh_host_reset, 110 111 .slave_configure = qla2xxx_slave_configure, 112 113 .slave_alloc = qla2xxx_slave_alloc, 114 .slave_destroy = qla2xxx_slave_destroy, 115 .this_id = -1, 116 .cmd_per_lun = 3, 117 .use_clustering = ENABLE_CLUSTERING, 118 .sg_tablesize = SG_ALL, 119 120 /* 121 * The RISC allows for each command to transfer (2^32-1) bytes of data, 122 * which equates to 0x800000 sectors. 123 */ 124 .max_sectors = 0xFFFF, 125 }; 126 127 static struct scsi_transport_template *qla2xxx_transport_template = NULL; 128 129 /* TODO Convert to inlines 130 * 131 * Timer routines 132 */ 133 #define WATCH_INTERVAL 1 /* number of seconds */ 134 135 static void qla2x00_timer(scsi_qla_host_t *); 136 137 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *, 138 void *, unsigned long); 139 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long); 140 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *); 141 142 static inline void 143 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval) 144 { 145 init_timer(&ha->timer); 146 ha->timer.expires = jiffies + interval * HZ; 147 ha->timer.data = (unsigned long)ha; 148 ha->timer.function = (void (*)(unsigned long))func; 149 add_timer(&ha->timer); 150 ha->timer_active = 1; 151 } 152 153 static inline void 154 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval) 155 { 156 mod_timer(&ha->timer, jiffies + interval * HZ); 157 } 158 159 static __inline__ void 160 qla2x00_stop_timer(scsi_qla_host_t *ha) 161 { 162 del_timer_sync(&ha->timer); 163 ha->timer_active = 0; 164 } 165 166 static int qla2x00_do_dpc(void *data); 167 168 static void qla2x00_rst_aen(scsi_qla_host_t *); 169 170 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *); 171 static void qla2x00_mem_free(scsi_qla_host_t *ha); 172 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha); 173 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha); 174 static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *); 175 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *); 176 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *); 177 178 /* -------------------------------------------------------------------------- */ 179 180 static char * 181 qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str) 182 { 183 static char *pci_bus_modes[] = { 184 "33", "66", "100", "133", 185 }; 186 uint16_t pci_bus; 187 188 strcpy(str, "PCI"); 189 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9; 190 if (pci_bus) { 191 strcat(str, "-X ("); 192 strcat(str, pci_bus_modes[pci_bus]); 193 } else { 194 pci_bus = (ha->pci_attr & BIT_8) >> 8; 195 strcat(str, " ("); 196 strcat(str, pci_bus_modes[pci_bus]); 197 } 198 strcat(str, " MHz)"); 199 200 return (str); 201 } 202 203 char * 204 qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str) 205 { 206 char un_str[10]; 207 208 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version, 209 ha->fw_minor_version, 210 ha->fw_subminor_version); 211 212 if (ha->fw_attributes & BIT_9) { 213 strcat(str, "FLX"); 214 return (str); 215 } 216 217 switch (ha->fw_attributes & 0xFF) { 218 case 0x7: 219 strcat(str, "EF"); 220 break; 221 case 0x17: 222 strcat(str, "TP"); 223 break; 224 case 0x37: 225 strcat(str, "IP"); 226 break; 227 case 0x77: 228 strcat(str, "VI"); 229 break; 230 default: 231 sprintf(un_str, "(%x)", ha->fw_attributes); 232 strcat(str, un_str); 233 break; 234 } 235 if (ha->fw_attributes & 0x100) 236 strcat(str, "X"); 237 238 return (str); 239 } 240 241 /************************************************************************** 242 * qla2x00_queuecommand 243 * 244 * Description: 245 * Queue a command to the controller. 246 * 247 * Input: 248 * cmd - pointer to Scsi cmd structure 249 * fn - pointer to Scsi done function 250 * 251 * Returns: 252 * 0 - Always 253 * 254 * Note: 255 * The mid-level driver tries to ensures that queuecommand never gets invoked 256 * concurrently with itself or the interrupt handler (although the 257 * interrupt handler may call this routine as part of request-completion 258 * handling). 259 **************************************************************************/ 260 static int 261 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) 262 { 263 scsi_qla_host_t *ha = to_qla_host(cmd->device->host); 264 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; 265 srb_t *sp; 266 int rval; 267 268 if (!fcport) { 269 cmd->result = DID_NO_CONNECT << 16; 270 goto qc_fail_command; 271 } 272 273 if (atomic_read(&fcport->state) != FCS_ONLINE) { 274 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || 275 atomic_read(&ha->loop_state) == LOOP_DEAD) { 276 cmd->result = DID_NO_CONNECT << 16; 277 goto qc_fail_command; 278 } 279 goto qc_host_busy; 280 } 281 282 spin_unlock_irq(ha->host->host_lock); 283 284 /* Allocate a command packet from the "sp" pool. */ 285 if ((sp = qla2x00_get_new_sp(ha)) == NULL) { 286 goto qc_host_busy_lock; 287 } 288 289 sp->ha = ha; 290 sp->fcport = fcport; 291 sp->cmd = cmd; 292 sp->flags = 0; 293 294 CMD_SP(cmd) = (void *)sp; 295 cmd->scsi_done = done; 296 297 rval = qla2x00_start_scsi(sp); 298 if (rval != QLA_SUCCESS) 299 goto qc_host_busy_free_sp; 300 301 /* Manage unprocessed RIO/ZIO commands in response queue. */ 302 if (ha->flags.online && ha->flags.process_response_queue && 303 ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { 304 unsigned long flags; 305 306 spin_lock_irqsave(&ha->hardware_lock, flags); 307 qla2x00_process_response_queue(ha); 308 spin_unlock_irqrestore(&ha->hardware_lock, flags); 309 } 310 311 spin_lock_irq(ha->host->host_lock); 312 313 return 0; 314 315 qc_host_busy_free_sp: 316 qla2x00_sp_free_dma(ha, sp); 317 CMD_SP(cmd) = NULL; 318 mempool_free(sp, ha->srb_mempool); 319 320 qc_host_busy_lock: 321 spin_lock_irq(ha->host->host_lock); 322 323 qc_host_busy: 324 return SCSI_MLQUEUE_HOST_BUSY; 325 326 qc_fail_command: 327 done(cmd); 328 329 return 0; 330 } 331 332 /* 333 * qla2x00_eh_wait_on_command 334 * Waits for the command to be returned by the Firmware for some 335 * max time. 336 * 337 * Input: 338 * ha = actual ha whose done queue will contain the command 339 * returned by firmware. 340 * cmd = Scsi Command to wait on. 341 * flag = Abort/Reset(Bus or Device Reset) 342 * 343 * Return: 344 * Not Found : 0 345 * Found : 1 346 */ 347 static int 348 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd) 349 { 350 #define ABORT_POLLING_PERIOD HZ 351 #define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD)) 352 unsigned long wait_iter = ABORT_WAIT_ITER; 353 int ret = QLA_SUCCESS; 354 355 while (CMD_SP(cmd)) { 356 set_current_state(TASK_UNINTERRUPTIBLE); 357 schedule_timeout(ABORT_POLLING_PERIOD); 358 359 if (--wait_iter) 360 break; 361 } 362 if (CMD_SP(cmd)) 363 ret = QLA_FUNCTION_FAILED; 364 365 return ret; 366 } 367 368 /* 369 * qla2x00_wait_for_hba_online 370 * Wait till the HBA is online after going through 371 * <= MAX_RETRIES_OF_ISP_ABORT or 372 * finally HBA is disabled ie marked offline 373 * 374 * Input: 375 * ha - pointer to host adapter structure 376 * 377 * Note: 378 * Does context switching-Release SPIN_LOCK 379 * (if any) before calling this routine. 380 * 381 * Return: 382 * Success (Adapter is online) : 0 383 * Failed (Adapter is offline/disabled) : 1 384 */ 385 static int 386 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha) 387 { 388 int return_status; 389 unsigned long wait_online; 390 391 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ); 392 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) || 393 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) || 394 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) || 395 ha->dpc_active) && time_before(jiffies, wait_online)) { 396 397 msleep(1000); 398 } 399 if (ha->flags.online) 400 return_status = QLA_SUCCESS; 401 else 402 return_status = QLA_FUNCTION_FAILED; 403 404 DEBUG2(printk("%s return_status=%d\n",__func__,return_status)); 405 406 return (return_status); 407 } 408 409 /* 410 * qla2x00_wait_for_loop_ready 411 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop 412 * to be in LOOP_READY state. 413 * Input: 414 * ha - pointer to host adapter structure 415 * 416 * Note: 417 * Does context switching-Release SPIN_LOCK 418 * (if any) before calling this routine. 419 * 420 * 421 * Return: 422 * Success (LOOP_READY) : 0 423 * Failed (LOOP_NOT_READY) : 1 424 */ 425 static inline int 426 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha) 427 { 428 int return_status = QLA_SUCCESS; 429 unsigned long loop_timeout ; 430 431 /* wait for 5 min at the max for loop to be ready */ 432 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ); 433 434 while ((!atomic_read(&ha->loop_down_timer) && 435 atomic_read(&ha->loop_state) == LOOP_DOWN) || 436 atomic_read(&ha->loop_state) != LOOP_READY) { 437 msleep(1000); 438 if (time_after_eq(jiffies, loop_timeout)) { 439 return_status = QLA_FUNCTION_FAILED; 440 break; 441 } 442 } 443 return (return_status); 444 } 445 446 /************************************************************************** 447 * qla2xxx_eh_abort 448 * 449 * Description: 450 * The abort function will abort the specified command. 451 * 452 * Input: 453 * cmd = Linux SCSI command packet to be aborted. 454 * 455 * Returns: 456 * Either SUCCESS or FAILED. 457 * 458 * Note: 459 **************************************************************************/ 460 int 461 qla2xxx_eh_abort(struct scsi_cmnd *cmd) 462 { 463 scsi_qla_host_t *ha = to_qla_host(cmd->device->host); 464 srb_t *sp; 465 int ret, i; 466 unsigned int id, lun; 467 unsigned long serial; 468 unsigned long flags; 469 470 if (!CMD_SP(cmd)) 471 return FAILED; 472 473 ret = FAILED; 474 475 id = cmd->device->id; 476 lun = cmd->device->lun; 477 serial = cmd->serial_number; 478 479 /* Check active list for command command. */ 480 spin_lock_irqsave(&ha->hardware_lock, flags); 481 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { 482 sp = ha->outstanding_cmds[i]; 483 484 if (sp == NULL) 485 continue; 486 487 if (sp->cmd != cmd) 488 continue; 489 490 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld " 491 "sp->state=%x\n", __func__, ha->host_no, sp, serial, 492 sp->state)); 493 DEBUG3(qla2x00_print_scsi_cmd(cmd);) 494 495 spin_unlock_irqrestore(&ha->hardware_lock, flags); 496 if (qla2x00_abort_command(ha, sp)) { 497 DEBUG2(printk("%s(%ld): abort_command " 498 "mbx failed.\n", __func__, ha->host_no)); 499 } else { 500 DEBUG3(printk("%s(%ld): abort_command " 501 "mbx success.\n", __func__, ha->host_no)); 502 ret = SUCCESS; 503 } 504 spin_lock_irqsave(&ha->hardware_lock, flags); 505 506 break; 507 } 508 spin_unlock_irqrestore(&ha->hardware_lock, flags); 509 510 /* Wait for the command to be returned. */ 511 if (ret == SUCCESS) { 512 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) { 513 qla_printk(KERN_ERR, ha, 514 "scsi(%ld:%d:%d): Abort handler timed out -- %lx " 515 "%x.\n", ha->host_no, id, lun, serial, ret); 516 } 517 } 518 519 qla_printk(KERN_INFO, ha, 520 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no, 521 id, lun, serial, ret); 522 523 return ret; 524 } 525 526 /************************************************************************** 527 * qla2x00_eh_wait_for_pending_target_commands 528 * 529 * Description: 530 * Waits for all the commands to come back from the specified target. 531 * 532 * Input: 533 * ha - pointer to scsi_qla_host structure. 534 * t - target 535 * Returns: 536 * Either SUCCESS or FAILED. 537 * 538 * Note: 539 **************************************************************************/ 540 static int 541 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t) 542 { 543 int cnt; 544 int status; 545 srb_t *sp; 546 struct scsi_cmnd *cmd; 547 unsigned long flags; 548 549 status = 0; 550 551 /* 552 * Waiting for all commands for the designated target in the active 553 * array 554 */ 555 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { 556 spin_lock_irqsave(&ha->hardware_lock, flags); 557 sp = ha->outstanding_cmds[cnt]; 558 if (sp) { 559 cmd = sp->cmd; 560 spin_unlock_irqrestore(&ha->hardware_lock, flags); 561 if (cmd->device->id == t) { 562 if (!qla2x00_eh_wait_on_command(ha, cmd)) { 563 status = 1; 564 break; 565 } 566 } 567 } else { 568 spin_unlock_irqrestore(&ha->hardware_lock, flags); 569 } 570 } 571 return (status); 572 } 573 574 575 /************************************************************************** 576 * qla2xxx_eh_device_reset 577 * 578 * Description: 579 * The device reset function will reset the target and abort any 580 * executing commands. 581 * 582 * NOTE: The use of SP is undefined within this context. Do *NOT* 583 * attempt to use this value, even if you determine it is 584 * non-null. 585 * 586 * Input: 587 * cmd = Linux SCSI command packet of the command that cause the 588 * bus device reset. 589 * 590 * Returns: 591 * SUCCESS/FAILURE (defined as macro in scsi.h). 592 * 593 **************************************************************************/ 594 int 595 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) 596 { 597 scsi_qla_host_t *ha = to_qla_host(cmd->device->host); 598 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; 599 srb_t *sp; 600 int ret; 601 unsigned int id, lun; 602 unsigned long serial; 603 604 ret = FAILED; 605 606 id = cmd->device->id; 607 lun = cmd->device->lun; 608 serial = cmd->serial_number; 609 610 sp = (srb_t *) CMD_SP(cmd); 611 if (!sp || !fcport) 612 return ret; 613 614 qla_printk(KERN_INFO, ha, 615 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun); 616 617 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) 618 goto eh_dev_reset_done; 619 620 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { 621 if (qla2x00_device_reset(ha, fcport) == 0) 622 ret = SUCCESS; 623 624 #if defined(LOGOUT_AFTER_DEVICE_RESET) 625 if (ret == SUCCESS) { 626 if (fcport->flags & FC_FABRIC_DEVICE) { 627 qla2x00_fabric_logout(ha, fcport->loop_id); 628 qla2x00_mark_device_lost(ha, fcport); 629 } 630 } 631 #endif 632 } else { 633 DEBUG2(printk(KERN_INFO 634 "%s failed: loop not ready\n",__func__);) 635 } 636 637 if (ret == FAILED) { 638 DEBUG3(printk("%s(%ld): device reset failed\n", 639 __func__, ha->host_no)); 640 qla_printk(KERN_INFO, ha, "%s: device reset failed\n", 641 __func__); 642 643 goto eh_dev_reset_done; 644 } 645 646 /* 647 * If we are coming down the EH path, wait for all commands to 648 * complete for the device. 649 */ 650 if (cmd->device->host->eh_active) { 651 if (qla2x00_eh_wait_for_pending_target_commands(ha, id)) 652 ret = FAILED; 653 654 if (ret == FAILED) { 655 DEBUG3(printk("%s(%ld): failed while waiting for " 656 "commands\n", __func__, ha->host_no)); 657 qla_printk(KERN_INFO, ha, 658 "%s: failed while waiting for commands\n", 659 __func__); 660 661 goto eh_dev_reset_done; 662 } 663 } 664 665 qla_printk(KERN_INFO, ha, 666 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun); 667 668 eh_dev_reset_done: 669 return ret; 670 } 671 672 /************************************************************************** 673 * qla2x00_eh_wait_for_pending_commands 674 * 675 * Description: 676 * Waits for all the commands to come back from the specified host. 677 * 678 * Input: 679 * ha - pointer to scsi_qla_host structure. 680 * 681 * Returns: 682 * 1 : SUCCESS 683 * 0 : FAILED 684 * 685 * Note: 686 **************************************************************************/ 687 static int 688 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha) 689 { 690 int cnt; 691 int status; 692 srb_t *sp; 693 struct scsi_cmnd *cmd; 694 unsigned long flags; 695 696 status = 1; 697 698 /* 699 * Waiting for all commands for the designated target in the active 700 * array 701 */ 702 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { 703 spin_lock_irqsave(&ha->hardware_lock, flags); 704 sp = ha->outstanding_cmds[cnt]; 705 if (sp) { 706 cmd = sp->cmd; 707 spin_unlock_irqrestore(&ha->hardware_lock, flags); 708 status = qla2x00_eh_wait_on_command(ha, cmd); 709 if (status == 0) 710 break; 711 } 712 else { 713 spin_unlock_irqrestore(&ha->hardware_lock, flags); 714 } 715 } 716 return (status); 717 } 718 719 720 /************************************************************************** 721 * qla2xxx_eh_bus_reset 722 * 723 * Description: 724 * The bus reset function will reset the bus and abort any executing 725 * commands. 726 * 727 * Input: 728 * cmd = Linux SCSI command packet of the command that cause the 729 * bus reset. 730 * 731 * Returns: 732 * SUCCESS/FAILURE (defined as macro in scsi.h). 733 * 734 **************************************************************************/ 735 int 736 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd) 737 { 738 scsi_qla_host_t *ha = to_qla_host(cmd->device->host); 739 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; 740 srb_t *sp; 741 int ret; 742 unsigned int id, lun; 743 unsigned long serial; 744 745 ret = FAILED; 746 747 id = cmd->device->id; 748 lun = cmd->device->lun; 749 serial = cmd->serial_number; 750 751 sp = (srb_t *) CMD_SP(cmd); 752 if (!sp || !fcport) 753 return ret; 754 755 qla_printk(KERN_INFO, ha, 756 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun); 757 758 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { 759 DEBUG2(printk("%s failed:board disabled\n",__func__)); 760 goto eh_bus_reset_done; 761 } 762 763 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { 764 if (qla2x00_loop_reset(ha) == QLA_SUCCESS) 765 ret = SUCCESS; 766 } 767 if (ret == FAILED) 768 goto eh_bus_reset_done; 769 770 /* Waiting for our command in done_queue to be returned to OS.*/ 771 if (cmd->device->host->eh_active) 772 if (!qla2x00_eh_wait_for_pending_commands(ha)) 773 ret = FAILED; 774 775 eh_bus_reset_done: 776 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, 777 (ret == FAILED) ? "failed" : "succeded"); 778 779 return ret; 780 } 781 782 /************************************************************************** 783 * qla2xxx_eh_host_reset 784 * 785 * Description: 786 * The reset function will reset the Adapter. 787 * 788 * Input: 789 * cmd = Linux SCSI command packet of the command that cause the 790 * adapter reset. 791 * 792 * Returns: 793 * Either SUCCESS or FAILED. 794 * 795 * Note: 796 **************************************************************************/ 797 int 798 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) 799 { 800 scsi_qla_host_t *ha = to_qla_host(cmd->device->host); 801 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata; 802 srb_t *sp; 803 int ret; 804 unsigned int id, lun; 805 unsigned long serial; 806 807 ret = FAILED; 808 809 id = cmd->device->id; 810 lun = cmd->device->lun; 811 serial = cmd->serial_number; 812 813 sp = (srb_t *) CMD_SP(cmd); 814 if (!sp || !fcport) 815 return ret; 816 817 qla_printk(KERN_INFO, ha, 818 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun); 819 820 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) 821 goto eh_host_reset_lock; 822 823 /* 824 * Fixme-may be dpc thread is active and processing 825 * loop_resync,so wait a while for it to 826 * be completed and then issue big hammer.Otherwise 827 * it may cause I/O failure as big hammer marks the 828 * devices as lost kicking of the port_down_timer 829 * while dpc is stuck for the mailbox to complete. 830 */ 831 qla2x00_wait_for_loop_ready(ha); 832 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); 833 if (qla2x00_abort_isp(ha)) { 834 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); 835 /* failed. schedule dpc to try */ 836 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 837 838 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) 839 goto eh_host_reset_lock; 840 } 841 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); 842 843 /* Waiting for our command in done_queue to be returned to OS.*/ 844 if (qla2x00_eh_wait_for_pending_commands(ha)) 845 ret = SUCCESS; 846 847 eh_host_reset_lock: 848 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, 849 (ret == FAILED) ? "failed" : "succeded"); 850 851 return ret; 852 } 853 854 /* 855 * qla2x00_loop_reset 856 * Issue loop reset. 857 * 858 * Input: 859 * ha = adapter block pointer. 860 * 861 * Returns: 862 * 0 = success 863 */ 864 static int 865 qla2x00_loop_reset(scsi_qla_host_t *ha) 866 { 867 int status = QLA_SUCCESS; 868 struct fc_port *fcport; 869 870 if (ha->flags.enable_lip_reset) { 871 status = qla2x00_lip_reset(ha); 872 } 873 874 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) { 875 list_for_each_entry(fcport, &ha->fcports, list) { 876 if (fcport->port_type != FCT_TARGET) 877 continue; 878 879 status = qla2x00_target_reset(ha, fcport); 880 if (status != QLA_SUCCESS) 881 break; 882 } 883 } 884 885 if (status == QLA_SUCCESS && 886 ((!ha->flags.enable_target_reset && 887 !ha->flags.enable_lip_reset) || 888 ha->flags.enable_lip_full_login)) { 889 890 status = qla2x00_full_login_lip(ha); 891 } 892 893 /* Issue marker command only when we are going to start the I/O */ 894 ha->marker_needed = 1; 895 896 if (status) { 897 /* Empty */ 898 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n", 899 __func__, 900 ha->host_no);) 901 } else { 902 /* Empty */ 903 DEBUG3(printk("%s(%ld): exiting normally.\n", 904 __func__, 905 ha->host_no);) 906 } 907 908 return(status); 909 } 910 911 /* 912 * qla2x00_device_reset 913 * Issue bus device reset message to the target. 914 * 915 * Input: 916 * ha = adapter block pointer. 917 * t = SCSI ID. 918 * TARGET_QUEUE_LOCK must be released. 919 * ADAPTER_STATE_LOCK must be released. 920 * 921 * Context: 922 * Kernel context. 923 */ 924 static int 925 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport) 926 { 927 /* Abort Target command will clear Reservation */ 928 return qla2x00_abort_target(reset_fcport); 929 } 930 931 static int 932 qla2xxx_slave_alloc(struct scsi_device *sdev) 933 { 934 scsi_qla_host_t *ha = to_qla_host(sdev->host); 935 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 936 fc_port_t *fcport; 937 int found; 938 939 if (!rport) 940 return -ENXIO; 941 942 found = 0; 943 list_for_each_entry(fcport, &ha->fcports, list) { 944 if (rport->port_name == 945 be64_to_cpu(*(uint64_t *)fcport->port_name)) { 946 found++; 947 break; 948 } 949 } 950 if (!found) 951 return -ENXIO; 952 953 sdev->hostdata = fcport; 954 955 return 0; 956 } 957 958 static int 959 qla2xxx_slave_configure(struct scsi_device *sdev) 960 { 961 scsi_qla_host_t *ha = to_qla_host(sdev->host); 962 struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 963 964 if (sdev->tagged_supported) 965 scsi_activate_tcq(sdev, 32); 966 else 967 scsi_deactivate_tcq(sdev, 32); 968 969 rport->dev_loss_tmo = ha->port_down_retry_count + 5; 970 971 return 0; 972 } 973 974 static void 975 qla2xxx_slave_destroy(struct scsi_device *sdev) 976 { 977 sdev->hostdata = NULL; 978 } 979 980 /** 981 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method. 982 * @ha: HA context 983 * 984 * At exit, the @ha's flags.enable_64bit_addressing set to indicated 985 * supported addressing method. 986 */ 987 static void 988 qla2x00_config_dma_addressing(scsi_qla_host_t *ha) 989 { 990 /* Assume 32bit DMA address */ 991 ha->flags.enable_64bit_addressing = 0; 992 ha->calc_request_entries = qla2x00_calc_iocbs_32; 993 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32; 994 995 /* 996 * Given the two variants pci_set_dma_mask(), allow the compiler to 997 * assist in setting the proper dma mask. 998 */ 999 if (sizeof(dma_addr_t) > 4) { 1000 if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { 1001 ha->flags.enable_64bit_addressing = 1; 1002 ha->calc_request_entries = qla2x00_calc_iocbs_64; 1003 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64; 1004 1005 if (pci_set_consistent_dma_mask(ha->pdev, 1006 DMA_64BIT_MASK)) { 1007 qla_printk(KERN_DEBUG, ha, 1008 "Failed to set 64 bit PCI consistent mask; " 1009 "using 32 bit.\n"); 1010 pci_set_consistent_dma_mask(ha->pdev, 1011 DMA_32BIT_MASK); 1012 } 1013 } else { 1014 qla_printk(KERN_DEBUG, ha, 1015 "Failed to set 64 bit PCI DMA mask, falling back " 1016 "to 32 bit MASK.\n"); 1017 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); 1018 } 1019 } else { 1020 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); 1021 } 1022 } 1023 1024 static int 1025 qla2x00_iospace_config(scsi_qla_host_t *ha) 1026 { 1027 unsigned long pio, pio_len, pio_flags; 1028 unsigned long mmio, mmio_len, mmio_flags; 1029 1030 /* We only need PIO for Flash operations on ISP2312 v2 chips. */ 1031 pio = pci_resource_start(ha->pdev, 0); 1032 pio_len = pci_resource_len(ha->pdev, 0); 1033 pio_flags = pci_resource_flags(ha->pdev, 0); 1034 if (pio_flags & IORESOURCE_IO) { 1035 if (pio_len < MIN_IOBASE_LEN) { 1036 qla_printk(KERN_WARNING, ha, 1037 "Invalid PCI I/O region size (%s)...\n", 1038 pci_name(ha->pdev)); 1039 pio = 0; 1040 } 1041 } else { 1042 qla_printk(KERN_WARNING, ha, 1043 "region #0 not a PIO resource (%s)...\n", 1044 pci_name(ha->pdev)); 1045 pio = 0; 1046 } 1047 1048 /* Use MMIO operations for all accesses. */ 1049 mmio = pci_resource_start(ha->pdev, 1); 1050 mmio_len = pci_resource_len(ha->pdev, 1); 1051 mmio_flags = pci_resource_flags(ha->pdev, 1); 1052 1053 if (!(mmio_flags & IORESOURCE_MEM)) { 1054 qla_printk(KERN_ERR, ha, 1055 "region #0 not an MMIO resource (%s), aborting\n", 1056 pci_name(ha->pdev)); 1057 goto iospace_error_exit; 1058 } 1059 if (mmio_len < MIN_IOBASE_LEN) { 1060 qla_printk(KERN_ERR, ha, 1061 "Invalid PCI mem region size (%s), aborting\n", 1062 pci_name(ha->pdev)); 1063 goto iospace_error_exit; 1064 } 1065 1066 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) { 1067 qla_printk(KERN_WARNING, ha, 1068 "Failed to reserve PIO/MMIO regions (%s)\n", 1069 pci_name(ha->pdev)); 1070 1071 goto iospace_error_exit; 1072 } 1073 1074 ha->pio_address = pio; 1075 ha->pio_length = pio_len; 1076 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN); 1077 if (!ha->iobase) { 1078 qla_printk(KERN_ERR, ha, 1079 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev)); 1080 1081 goto iospace_error_exit; 1082 } 1083 1084 return (0); 1085 1086 iospace_error_exit: 1087 return (-ENOMEM); 1088 } 1089 1090 /* 1091 * PCI driver interface 1092 */ 1093 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info) 1094 { 1095 int ret = -ENODEV; 1096 device_reg_t __iomem *reg; 1097 struct Scsi_Host *host; 1098 scsi_qla_host_t *ha; 1099 unsigned long flags = 0; 1100 unsigned long wait_switch = 0; 1101 char pci_info[20]; 1102 char fw_str[30]; 1103 fc_port_t *fcport; 1104 1105 if (pci_enable_device(pdev)) 1106 goto probe_out; 1107 1108 host = scsi_host_alloc(&qla2x00_driver_template, 1109 sizeof(scsi_qla_host_t)); 1110 if (host == NULL) { 1111 printk(KERN_WARNING 1112 "qla2xxx: Couldn't allocate host from scsi layer!\n"); 1113 goto probe_disable_device; 1114 } 1115 1116 /* Clear our data area */ 1117 ha = (scsi_qla_host_t *)host->hostdata; 1118 memset(ha, 0, sizeof(scsi_qla_host_t)); 1119 1120 ha->pdev = pdev; 1121 ha->host = host; 1122 ha->host_no = host->host_no; 1123 ha->brd_info = brd_info; 1124 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no); 1125 1126 /* Configure PCI I/O space */ 1127 ret = qla2x00_iospace_config(ha); 1128 if (ret) 1129 goto probe_failed; 1130 1131 /* Sanitize the information from PCI BIOS. */ 1132 host->irq = pdev->irq; 1133 1134 qla_printk(KERN_INFO, ha, 1135 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name, 1136 host->irq, ha->iobase); 1137 1138 spin_lock_init(&ha->hardware_lock); 1139 1140 ha->prev_topology = 0; 1141 ha->ports = MAX_BUSES; 1142 1143 if (IS_QLA2100(ha)) { 1144 host->max_id = MAX_TARGETS_2100; 1145 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100; 1146 ha->request_q_length = REQUEST_ENTRY_CNT_2100; 1147 ha->response_q_length = RESPONSE_ENTRY_CNT_2100; 1148 ha->last_loop_id = SNS_LAST_LOOP_ID_2100; 1149 host->sg_tablesize = 32; 1150 } else if (IS_QLA2200(ha)) { 1151 host->max_id = MAX_TARGETS_2200; 1152 ha->mbx_count = MAILBOX_REGISTER_COUNT; 1153 ha->request_q_length = REQUEST_ENTRY_CNT_2200; 1154 ha->response_q_length = RESPONSE_ENTRY_CNT_2100; 1155 ha->last_loop_id = SNS_LAST_LOOP_ID_2100; 1156 } else /*if (IS_QLA2300(ha))*/ { 1157 host->max_id = MAX_TARGETS_2200; 1158 ha->mbx_count = MAILBOX_REGISTER_COUNT; 1159 ha->request_q_length = REQUEST_ENTRY_CNT_2200; 1160 ha->response_q_length = RESPONSE_ENTRY_CNT_2300; 1161 ha->last_loop_id = SNS_LAST_LOOP_ID_2300; 1162 } 1163 host->can_queue = ha->request_q_length + 128; 1164 1165 /* load the F/W, read paramaters, and init the H/W */ 1166 ha->instance = num_hosts; 1167 1168 init_MUTEX(&ha->mbx_cmd_sem); 1169 init_MUTEX_LOCKED(&ha->mbx_intr_sem); 1170 1171 INIT_LIST_HEAD(&ha->list); 1172 INIT_LIST_HEAD(&ha->fcports); 1173 INIT_LIST_HEAD(&ha->rscn_fcports); 1174 1175 /* 1176 * These locks are used to prevent more than one CPU 1177 * from modifying the queue at the same time. The 1178 * higher level "host_lock" will reduce most 1179 * contention for these locks. 1180 */ 1181 spin_lock_init(&ha->mbx_reg_lock); 1182 1183 ha->dpc_pid = -1; 1184 init_completion(&ha->dpc_inited); 1185 init_completion(&ha->dpc_exited); 1186 1187 qla2x00_config_dma_addressing(ha); 1188 if (qla2x00_mem_alloc(ha)) { 1189 qla_printk(KERN_WARNING, ha, 1190 "[ERROR] Failed to allocate memory for adapter\n"); 1191 1192 ret = -ENOMEM; 1193 goto probe_failed; 1194 } 1195 1196 if (qla2x00_initialize_adapter(ha) && 1197 !(ha->device_flags & DFLG_NO_CABLE)) { 1198 1199 qla_printk(KERN_WARNING, ha, 1200 "Failed to initialize adapter\n"); 1201 1202 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - " 1203 "Adapter flags %x.\n", 1204 ha->host_no, ha->device_flags)); 1205 1206 ret = -ENODEV; 1207 goto probe_failed; 1208 } 1209 1210 /* 1211 * Startup the kernel thread for this host adapter 1212 */ 1213 ha->dpc_should_die = 0; 1214 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0); 1215 if (ha->dpc_pid < 0) { 1216 qla_printk(KERN_WARNING, ha, 1217 "Unable to start DPC thread!\n"); 1218 1219 ret = -ENODEV; 1220 goto probe_failed; 1221 } 1222 wait_for_completion(&ha->dpc_inited); 1223 1224 host->this_id = 255; 1225 host->cmd_per_lun = 3; 1226 host->unique_id = ha->instance; 1227 host->max_cmd_len = MAX_CMDSZ; 1228 host->max_channel = ha->ports - 1; 1229 host->max_lun = MAX_LUNS; 1230 host->transportt = qla2xxx_transport_template; 1231 1232 if (IS_QLA2100(ha) || IS_QLA2200(ha)) 1233 ret = request_irq(host->irq, qla2100_intr_handler, 1234 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha); 1235 else 1236 ret = request_irq(host->irq, qla2300_intr_handler, 1237 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha); 1238 if (ret) { 1239 qla_printk(KERN_WARNING, ha, 1240 "Failed to reserve interrupt %d already in use.\n", 1241 host->irq); 1242 goto probe_failed; 1243 } 1244 1245 /* Initialized the timer */ 1246 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL); 1247 1248 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n", 1249 ha->host_no, ha)); 1250 1251 reg = ha->iobase; 1252 1253 /* Disable ISP interrupts. */ 1254 qla2x00_disable_intrs(ha); 1255 1256 /* Ensure mailbox registers are free. */ 1257 spin_lock_irqsave(&ha->hardware_lock, flags); 1258 WRT_REG_WORD(®->semaphore, 0); 1259 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); 1260 WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT); 1261 1262 /* Enable proper parity */ 1263 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) { 1264 if (IS_QLA2300(ha)) 1265 /* SRAM parity */ 1266 WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1)); 1267 else 1268 /* SRAM, Instruction RAM and GP RAM parity */ 1269 WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7)); 1270 } 1271 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1272 1273 /* Enable chip interrupts. */ 1274 qla2x00_enable_intrs(ha); 1275 1276 /* v2.19.5b6 */ 1277 /* 1278 * Wait around max loop_reset_delay secs for the devices to come 1279 * on-line. We don't want Linux scanning before we are ready. 1280 * 1281 */ 1282 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ); 1283 time_before(jiffies,wait_switch) && 1284 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES)) 1285 && (ha->device_flags & SWITCH_FOUND) ;) { 1286 1287 qla2x00_check_fabric_devices(ha); 1288 1289 msleep(10); 1290 } 1291 1292 pci_set_drvdata(pdev, ha); 1293 ha->flags.init_done = 1; 1294 num_hosts++; 1295 1296 ret = scsi_add_host(host, &pdev->dev); 1297 if (ret) 1298 goto probe_failed; 1299 1300 qla2x00_alloc_sysfs_attr(ha); 1301 1302 qla2x00_init_host_attr(ha); 1303 1304 qla_printk(KERN_INFO, ha, "\n" 1305 " QLogic Fibre Channel HBA Driver: %s\n" 1306 " QLogic %s - %s\n" 1307 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str, 1308 ha->model_number, ha->model_desc ? ha->model_desc: "", 1309 ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info), 1310 pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-', 1311 ha->host_no, qla2x00_get_fw_version_str(ha, fw_str)); 1312 1313 /* Go with fc_rport registration. */ 1314 list_for_each_entry(fcport, &ha->fcports, list) 1315 qla2x00_reg_remote_port(ha, fcport); 1316 1317 return 0; 1318 1319 probe_failed: 1320 fc_remove_host(ha->host); 1321 1322 qla2x00_free_device(ha); 1323 1324 scsi_host_put(host); 1325 1326 probe_disable_device: 1327 pci_disable_device(pdev); 1328 1329 probe_out: 1330 return ret; 1331 } 1332 EXPORT_SYMBOL_GPL(qla2x00_probe_one); 1333 1334 void qla2x00_remove_one(struct pci_dev *pdev) 1335 { 1336 scsi_qla_host_t *ha; 1337 1338 ha = pci_get_drvdata(pdev); 1339 1340 qla2x00_free_sysfs_attr(ha); 1341 1342 fc_remove_host(ha->host); 1343 1344 scsi_remove_host(ha->host); 1345 1346 qla2x00_free_device(ha); 1347 1348 scsi_host_put(ha->host); 1349 1350 pci_set_drvdata(pdev, NULL); 1351 } 1352 EXPORT_SYMBOL_GPL(qla2x00_remove_one); 1353 1354 static void 1355 qla2x00_free_device(scsi_qla_host_t *ha) 1356 { 1357 int ret; 1358 1359 /* Abort any outstanding IO descriptors. */ 1360 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) 1361 qla2x00_cancel_io_descriptors(ha); 1362 1363 /* turn-off interrupts on the card */ 1364 if (ha->interrupts_on) 1365 qla2x00_disable_intrs(ha); 1366 1367 /* Disable timer */ 1368 if (ha->timer_active) 1369 qla2x00_stop_timer(ha); 1370 1371 /* Kill the kernel thread for this host */ 1372 if (ha->dpc_pid >= 0) { 1373 ha->dpc_should_die = 1; 1374 wmb(); 1375 ret = kill_proc(ha->dpc_pid, SIGHUP, 1); 1376 if (ret) { 1377 qla_printk(KERN_ERR, ha, 1378 "Unable to signal DPC thread -- (%d)\n", ret); 1379 1380 /* TODO: SOMETHING MORE??? */ 1381 } else { 1382 wait_for_completion(&ha->dpc_exited); 1383 } 1384 } 1385 1386 qla2x00_mem_free(ha); 1387 1388 1389 ha->flags.online = 0; 1390 1391 /* Detach interrupts */ 1392 if (ha->pdev->irq) 1393 free_irq(ha->pdev->irq, ha); 1394 1395 /* release io space registers */ 1396 if (ha->iobase) 1397 iounmap(ha->iobase); 1398 pci_release_regions(ha->pdev); 1399 1400 pci_disable_device(ha->pdev); 1401 } 1402 1403 /* 1404 * qla2x00_mark_device_lost Updates fcport state when device goes offline. 1405 * 1406 * Input: ha = adapter block pointer. fcport = port structure pointer. 1407 * 1408 * Return: None. 1409 * 1410 * Context: 1411 */ 1412 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport, 1413 int do_login) 1414 { 1415 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport) 1416 fc_remote_port_block(fcport->rport); 1417 /* 1418 * We may need to retry the login, so don't change the state of the 1419 * port but do the retries. 1420 */ 1421 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD) 1422 atomic_set(&fcport->state, FCS_DEVICE_LOST); 1423 1424 if (!do_login) 1425 return; 1426 1427 if (fcport->login_retry == 0) { 1428 fcport->login_retry = ha->login_retry_count; 1429 set_bit(RELOGIN_NEEDED, &ha->dpc_flags); 1430 1431 DEBUG(printk("scsi(%ld): Port login retry: " 1432 "%02x%02x%02x%02x%02x%02x%02x%02x, " 1433 "id = 0x%04x retry cnt=%d\n", 1434 ha->host_no, 1435 fcport->port_name[0], 1436 fcport->port_name[1], 1437 fcport->port_name[2], 1438 fcport->port_name[3], 1439 fcport->port_name[4], 1440 fcport->port_name[5], 1441 fcport->port_name[6], 1442 fcport->port_name[7], 1443 fcport->loop_id, 1444 fcport->login_retry)); 1445 } 1446 } 1447 1448 /* 1449 * qla2x00_mark_all_devices_lost 1450 * Updates fcport state when device goes offline. 1451 * 1452 * Input: 1453 * ha = adapter block pointer. 1454 * fcport = port structure pointer. 1455 * 1456 * Return: 1457 * None. 1458 * 1459 * Context: 1460 */ 1461 void 1462 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha) 1463 { 1464 fc_port_t *fcport; 1465 1466 list_for_each_entry(fcport, &ha->fcports, list) { 1467 if (fcport->port_type != FCT_TARGET) 1468 continue; 1469 1470 /* 1471 * No point in marking the device as lost, if the device is 1472 * already DEAD. 1473 */ 1474 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) 1475 continue; 1476 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport) 1477 fc_remote_port_block(fcport->rport); 1478 atomic_set(&fcport->state, FCS_DEVICE_LOST); 1479 } 1480 } 1481 1482 /* 1483 * qla2x00_mem_alloc 1484 * Allocates adapter memory. 1485 * 1486 * Returns: 1487 * 0 = success. 1488 * 1 = failure. 1489 */ 1490 static uint8_t 1491 qla2x00_mem_alloc(scsi_qla_host_t *ha) 1492 { 1493 char name[16]; 1494 uint8_t status = 1; 1495 int retry= 10; 1496 1497 do { 1498 /* 1499 * This will loop only once if everything goes well, else some 1500 * number of retries will be performed to get around a kernel 1501 * bug where available mem is not allocated until after a 1502 * little delay and a retry. 1503 */ 1504 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev, 1505 (ha->request_q_length + 1) * sizeof(request_t), 1506 &ha->request_dma, GFP_KERNEL); 1507 if (ha->request_ring == NULL) { 1508 qla_printk(KERN_WARNING, ha, 1509 "Memory Allocation failed - request_ring\n"); 1510 1511 qla2x00_mem_free(ha); 1512 msleep(100); 1513 1514 continue; 1515 } 1516 1517 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev, 1518 (ha->response_q_length + 1) * sizeof(response_t), 1519 &ha->response_dma, GFP_KERNEL); 1520 if (ha->response_ring == NULL) { 1521 qla_printk(KERN_WARNING, ha, 1522 "Memory Allocation failed - response_ring\n"); 1523 1524 qla2x00_mem_free(ha); 1525 msleep(100); 1526 1527 continue; 1528 } 1529 1530 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE, 1531 &ha->gid_list_dma, GFP_KERNEL); 1532 if (ha->gid_list == NULL) { 1533 qla_printk(KERN_WARNING, ha, 1534 "Memory Allocation failed - gid_list\n"); 1535 1536 qla2x00_mem_free(ha); 1537 msleep(100); 1538 1539 continue; 1540 } 1541 1542 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev, 1543 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL); 1544 if (ha->rlc_rsp == NULL) { 1545 qla_printk(KERN_WARNING, ha, 1546 "Memory Allocation failed - rlc"); 1547 1548 qla2x00_mem_free(ha); 1549 msleep(100); 1550 1551 continue; 1552 } 1553 1554 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no); 1555 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev, 1556 DMA_POOL_SIZE, 8, 0); 1557 if (ha->s_dma_pool == NULL) { 1558 qla_printk(KERN_WARNING, ha, 1559 "Memory Allocation failed - s_dma_pool\n"); 1560 1561 qla2x00_mem_free(ha); 1562 msleep(100); 1563 1564 continue; 1565 } 1566 1567 /* get consistent memory allocated for init control block */ 1568 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, 1569 &ha->init_cb_dma); 1570 if (ha->init_cb == NULL) { 1571 qla_printk(KERN_WARNING, ha, 1572 "Memory Allocation failed - init_cb\n"); 1573 1574 qla2x00_mem_free(ha); 1575 msleep(100); 1576 1577 continue; 1578 } 1579 memset(ha->init_cb, 0, sizeof(init_cb_t)); 1580 1581 /* Get consistent memory allocated for Get Port Database cmd */ 1582 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, 1583 &ha->iodesc_pd_dma); 1584 if (ha->iodesc_pd == NULL) { 1585 /* error */ 1586 qla_printk(KERN_WARNING, ha, 1587 "Memory Allocation failed - iodesc_pd\n"); 1588 1589 qla2x00_mem_free(ha); 1590 msleep(100); 1591 1592 continue; 1593 } 1594 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE); 1595 1596 /* Allocate ioctl related memory. */ 1597 if (qla2x00_alloc_ioctl_mem(ha)) { 1598 qla_printk(KERN_WARNING, ha, 1599 "Memory Allocation failed - ioctl_mem\n"); 1600 1601 qla2x00_mem_free(ha); 1602 msleep(100); 1603 1604 continue; 1605 } 1606 1607 if (qla2x00_allocate_sp_pool(ha)) { 1608 qla_printk(KERN_WARNING, ha, 1609 "Memory Allocation failed - " 1610 "qla2x00_allocate_sp_pool()\n"); 1611 1612 qla2x00_mem_free(ha); 1613 msleep(100); 1614 1615 continue; 1616 } 1617 1618 /* Allocate memory for SNS commands */ 1619 if (IS_QLA2100(ha) || IS_QLA2200(ha)) { 1620 /* Get consistent memory allocated for SNS commands */ 1621 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev, 1622 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, 1623 GFP_KERNEL); 1624 if (ha->sns_cmd == NULL) { 1625 /* error */ 1626 qla_printk(KERN_WARNING, ha, 1627 "Memory Allocation failed - sns_cmd\n"); 1628 1629 qla2x00_mem_free(ha); 1630 msleep(100); 1631 1632 continue; 1633 } 1634 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt)); 1635 } else { 1636 /* Get consistent memory allocated for MS IOCB */ 1637 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, 1638 &ha->ms_iocb_dma); 1639 if (ha->ms_iocb == NULL) { 1640 /* error */ 1641 qla_printk(KERN_WARNING, ha, 1642 "Memory Allocation failed - ms_iocb\n"); 1643 1644 qla2x00_mem_free(ha); 1645 msleep(100); 1646 1647 continue; 1648 } 1649 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t)); 1650 1651 /* 1652 * Get consistent memory allocated for CT SNS 1653 * commands 1654 */ 1655 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev, 1656 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, 1657 GFP_KERNEL); 1658 if (ha->ct_sns == NULL) { 1659 /* error */ 1660 qla_printk(KERN_WARNING, ha, 1661 "Memory Allocation failed - ct_sns\n"); 1662 1663 qla2x00_mem_free(ha); 1664 msleep(100); 1665 1666 continue; 1667 } 1668 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt)); 1669 } 1670 1671 /* Done all allocations without any error. */ 1672 status = 0; 1673 1674 } while (retry-- && status != 0); 1675 1676 if (status) { 1677 printk(KERN_WARNING 1678 "%s(): **** FAILED ****\n", __func__); 1679 } 1680 1681 return(status); 1682 } 1683 1684 /* 1685 * qla2x00_mem_free 1686 * Frees all adapter allocated memory. 1687 * 1688 * Input: 1689 * ha = adapter block pointer. 1690 */ 1691 static void 1692 qla2x00_mem_free(scsi_qla_host_t *ha) 1693 { 1694 struct list_head *fcpl, *fcptemp; 1695 fc_port_t *fcport; 1696 unsigned long wtime;/* max wait time if mbx cmd is busy. */ 1697 1698 if (ha == NULL) { 1699 /* error */ 1700 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__)); 1701 return; 1702 } 1703 1704 /* Make sure all other threads are stopped. */ 1705 wtime = 60 * HZ; 1706 while (ha->dpc_wait && wtime) { 1707 set_current_state(TASK_INTERRUPTIBLE); 1708 wtime = schedule_timeout(wtime); 1709 } 1710 1711 /* free ioctl memory */ 1712 qla2x00_free_ioctl_mem(ha); 1713 1714 /* free sp pool */ 1715 qla2x00_free_sp_pool(ha); 1716 1717 if (ha->sns_cmd) 1718 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt), 1719 ha->sns_cmd, ha->sns_cmd_dma); 1720 1721 if (ha->ct_sns) 1722 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt), 1723 ha->ct_sns, ha->ct_sns_dma); 1724 1725 if (ha->ms_iocb) 1726 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma); 1727 1728 if (ha->iodesc_pd) 1729 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma); 1730 1731 if (ha->init_cb) 1732 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma); 1733 1734 if (ha->s_dma_pool) 1735 dma_pool_destroy(ha->s_dma_pool); 1736 1737 if (ha->rlc_rsp) 1738 dma_free_coherent(&ha->pdev->dev, 1739 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp, 1740 ha->rlc_rsp_dma); 1741 1742 if (ha->gid_list) 1743 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list, 1744 ha->gid_list_dma); 1745 1746 if (ha->response_ring) 1747 dma_free_coherent(&ha->pdev->dev, 1748 (ha->response_q_length + 1) * sizeof(response_t), 1749 ha->response_ring, ha->response_dma); 1750 1751 if (ha->request_ring) 1752 dma_free_coherent(&ha->pdev->dev, 1753 (ha->request_q_length + 1) * sizeof(request_t), 1754 ha->request_ring, ha->request_dma); 1755 1756 ha->sns_cmd = NULL; 1757 ha->sns_cmd_dma = 0; 1758 ha->ct_sns = NULL; 1759 ha->ct_sns_dma = 0; 1760 ha->ms_iocb = NULL; 1761 ha->ms_iocb_dma = 0; 1762 ha->iodesc_pd = NULL; 1763 ha->iodesc_pd_dma = 0; 1764 ha->init_cb = NULL; 1765 ha->init_cb_dma = 0; 1766 1767 ha->s_dma_pool = NULL; 1768 1769 ha->rlc_rsp = NULL; 1770 ha->rlc_rsp_dma = 0; 1771 ha->gid_list = NULL; 1772 ha->gid_list_dma = 0; 1773 1774 ha->response_ring = NULL; 1775 ha->response_dma = 0; 1776 ha->request_ring = NULL; 1777 ha->request_dma = 0; 1778 1779 list_for_each_safe(fcpl, fcptemp, &ha->fcports) { 1780 fcport = list_entry(fcpl, fc_port_t, list); 1781 1782 /* fc ports */ 1783 list_del_init(&fcport->list); 1784 kfree(fcport); 1785 } 1786 INIT_LIST_HEAD(&ha->fcports); 1787 1788 if (ha->fw_dump) 1789 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order); 1790 1791 if (ha->fw_dump_buffer) 1792 vfree(ha->fw_dump_buffer); 1793 1794 ha->fw_dump = NULL; 1795 ha->fw_dump_reading = 0; 1796 ha->fw_dump_buffer = NULL; 1797 } 1798 1799 /* 1800 * qla2x00_allocate_sp_pool 1801 * This routine is called during initialization to allocate 1802 * memory for local srb_t. 1803 * 1804 * Input: 1805 * ha = adapter block pointer. 1806 * 1807 * Context: 1808 * Kernel context. 1809 * 1810 * Note: Sets the ref_count for non Null sp to one. 1811 */ 1812 static int 1813 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha) 1814 { 1815 int rval; 1816 1817 rval = QLA_SUCCESS; 1818 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 1819 mempool_free_slab, srb_cachep); 1820 if (ha->srb_mempool == NULL) { 1821 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n"); 1822 rval = QLA_FUNCTION_FAILED; 1823 } 1824 return (rval); 1825 } 1826 1827 /* 1828 * This routine frees all adapter allocated memory. 1829 * 1830 */ 1831 static void 1832 qla2x00_free_sp_pool( scsi_qla_host_t *ha) 1833 { 1834 if (ha->srb_mempool) { 1835 mempool_destroy(ha->srb_mempool); 1836 ha->srb_mempool = NULL; 1837 } 1838 } 1839 1840 /************************************************************************** 1841 * qla2x00_do_dpc 1842 * This kernel thread is a task that is schedule by the interrupt handler 1843 * to perform the background processing for interrupts. 1844 * 1845 * Notes: 1846 * This task always run in the context of a kernel thread. It 1847 * is kick-off by the driver's detect code and starts up 1848 * up one per adapter. It immediately goes to sleep and waits for 1849 * some fibre event. When either the interrupt handler or 1850 * the timer routine detects a event it will one of the task 1851 * bits then wake us up. 1852 **************************************************************************/ 1853 static int 1854 qla2x00_do_dpc(void *data) 1855 { 1856 DECLARE_MUTEX_LOCKED(sem); 1857 scsi_qla_host_t *ha; 1858 fc_port_t *fcport; 1859 uint8_t status; 1860 uint16_t next_loopid; 1861 1862 ha = (scsi_qla_host_t *)data; 1863 1864 lock_kernel(); 1865 1866 daemonize("%s_dpc", ha->host_str); 1867 allow_signal(SIGHUP); 1868 1869 ha->dpc_wait = &sem; 1870 1871 set_user_nice(current, -20); 1872 1873 unlock_kernel(); 1874 1875 complete(&ha->dpc_inited); 1876 1877 while (1) { 1878 DEBUG3(printk("qla2x00: DPC handler sleeping\n")); 1879 1880 if (down_interruptible(&sem)) 1881 break; 1882 1883 if (ha->dpc_should_die) 1884 break; 1885 1886 DEBUG3(printk("qla2x00: DPC handler waking up\n")); 1887 1888 /* Initialization not yet finished. Don't do anything yet. */ 1889 if (!ha->flags.init_done || ha->dpc_active) 1890 continue; 1891 1892 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no)); 1893 1894 ha->dpc_active = 1; 1895 1896 if (ha->flags.mbox_busy) { 1897 ha->dpc_active = 0; 1898 continue; 1899 } 1900 1901 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) { 1902 1903 DEBUG(printk("scsi(%ld): dpc: sched " 1904 "qla2x00_abort_isp ha = %p\n", 1905 ha->host_no, ha)); 1906 if (!(test_and_set_bit(ABORT_ISP_ACTIVE, 1907 &ha->dpc_flags))) { 1908 1909 if (qla2x00_abort_isp(ha)) { 1910 /* failed. retry later */ 1911 set_bit(ISP_ABORT_NEEDED, 1912 &ha->dpc_flags); 1913 } 1914 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); 1915 } 1916 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n", 1917 ha->host_no)); 1918 } 1919 1920 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) && 1921 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) { 1922 1923 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n", 1924 ha->host_no)); 1925 1926 qla2x00_rst_aen(ha); 1927 clear_bit(RESET_ACTIVE, &ha->dpc_flags); 1928 } 1929 1930 /* Retry each device up to login retry count */ 1931 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && 1932 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) && 1933 atomic_read(&ha->loop_state) != LOOP_DOWN) { 1934 1935 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n", 1936 ha->host_no)); 1937 1938 next_loopid = 0; 1939 list_for_each_entry(fcport, &ha->fcports, list) { 1940 if (fcport->port_type != FCT_TARGET) 1941 continue; 1942 1943 /* 1944 * If the port is not ONLINE then try to login 1945 * to it if we haven't run out of retries. 1946 */ 1947 if (atomic_read(&fcport->state) != FCS_ONLINE && 1948 fcport->login_retry) { 1949 1950 fcport->login_retry--; 1951 if (fcport->flags & FCF_FABRIC_DEVICE) { 1952 if (fcport->flags & 1953 FCF_TAPE_PRESENT) 1954 qla2x00_fabric_logout( 1955 ha, 1956 fcport->loop_id); 1957 status = qla2x00_fabric_login( 1958 ha, fcport, &next_loopid); 1959 } else 1960 status = 1961 qla2x00_local_device_login( 1962 ha, fcport->loop_id); 1963 1964 if (status == QLA_SUCCESS) { 1965 fcport->old_loop_id = fcport->loop_id; 1966 1967 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n", 1968 ha->host_no, fcport->loop_id)); 1969 1970 fcport->port_login_retry_count = 1971 ha->port_down_retry_count * PORT_RETRY_TIME; 1972 atomic_set(&fcport->state, FCS_ONLINE); 1973 atomic_set(&fcport->port_down_timer, 1974 ha->port_down_retry_count * PORT_RETRY_TIME); 1975 1976 fcport->login_retry = 0; 1977 } else if (status == 1) { 1978 set_bit(RELOGIN_NEEDED, &ha->dpc_flags); 1979 /* retry the login again */ 1980 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n", 1981 ha->host_no, 1982 fcport->login_retry, fcport->loop_id)); 1983 } else { 1984 fcport->login_retry = 0; 1985 } 1986 } 1987 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) 1988 break; 1989 } 1990 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n", 1991 ha->host_no)); 1992 } 1993 1994 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) && 1995 atomic_read(&ha->loop_state) != LOOP_DOWN) { 1996 1997 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags); 1998 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n", 1999 ha->host_no)); 2000 2001 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); 2002 2003 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n", 2004 ha->host_no)); 2005 } 2006 2007 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) { 2008 2009 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n", 2010 ha->host_no)); 2011 2012 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, 2013 &ha->dpc_flags))) { 2014 2015 qla2x00_loop_resync(ha); 2016 2017 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags); 2018 } 2019 2020 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n", 2021 ha->host_no)); 2022 } 2023 2024 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) { 2025 2026 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n", 2027 ha->host_no)); 2028 2029 qla2x00_rescan_fcports(ha); 2030 2031 DEBUG(printk("scsi(%ld): Rescan flagged fcports..." 2032 "end.\n", 2033 ha->host_no)); 2034 } 2035 2036 if (!ha->interrupts_on) 2037 qla2x00_enable_intrs(ha); 2038 2039 ha->dpc_active = 0; 2040 } /* End of while(1) */ 2041 2042 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no)); 2043 2044 /* 2045 * Make sure that nobody tries to wake us up again. 2046 */ 2047 ha->dpc_wait = NULL; 2048 ha->dpc_active = 0; 2049 2050 complete_and_exit(&ha->dpc_exited, 0); 2051 } 2052 2053 /* 2054 * qla2x00_rst_aen 2055 * Processes asynchronous reset. 2056 * 2057 * Input: 2058 * ha = adapter block pointer. 2059 */ 2060 static void 2061 qla2x00_rst_aen(scsi_qla_host_t *ha) 2062 { 2063 if (ha->flags.online && !ha->flags.reset_active && 2064 !atomic_read(&ha->loop_down_timer) && 2065 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) { 2066 do { 2067 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); 2068 2069 /* 2070 * Issue marker command only when we are going to start 2071 * the I/O. 2072 */ 2073 ha->marker_needed = 1; 2074 } while (!atomic_read(&ha->loop_down_timer) && 2075 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags))); 2076 } 2077 } 2078 2079 2080 /* 2081 * This routine will allocate SP from the free queue 2082 * input: 2083 * scsi_qla_host_t * 2084 * output: 2085 * srb_t * or NULL 2086 */ 2087 static srb_t * 2088 qla2x00_get_new_sp(scsi_qla_host_t *ha) 2089 { 2090 srb_t *sp; 2091 2092 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 2093 if (sp) 2094 atomic_set(&sp->ref_count, 1); 2095 return (sp); 2096 } 2097 2098 static void 2099 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp) 2100 { 2101 struct scsi_cmnd *cmd = sp->cmd; 2102 2103 if (sp->flags & SRB_DMA_VALID) { 2104 if (cmd->use_sg) { 2105 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer, 2106 cmd->use_sg, cmd->sc_data_direction); 2107 } else if (cmd->request_bufflen) { 2108 dma_unmap_single(&ha->pdev->dev, sp->dma_handle, 2109 cmd->request_bufflen, cmd->sc_data_direction); 2110 } 2111 sp->flags &= ~SRB_DMA_VALID; 2112 } 2113 } 2114 2115 void 2116 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp) 2117 { 2118 struct scsi_cmnd *cmd = sp->cmd; 2119 2120 qla2x00_sp_free_dma(ha, sp); 2121 2122 CMD_SP(cmd) = NULL; 2123 mempool_free(sp, ha->srb_mempool); 2124 2125 cmd->scsi_done(cmd); 2126 } 2127 2128 /************************************************************************** 2129 * qla2x00_timer 2130 * 2131 * Description: 2132 * One second timer 2133 * 2134 * Context: Interrupt 2135 ***************************************************************************/ 2136 static void 2137 qla2x00_timer(scsi_qla_host_t *ha) 2138 { 2139 unsigned long cpu_flags = 0; 2140 fc_port_t *fcport; 2141 int start_dpc = 0; 2142 int index; 2143 srb_t *sp; 2144 int t; 2145 2146 /* 2147 * Ports - Port down timer. 2148 * 2149 * Whenever, a port is in the LOST state we start decrementing its port 2150 * down timer every second until it reaches zero. Once it reaches zero 2151 * the port it marked DEAD. 2152 */ 2153 t = 0; 2154 list_for_each_entry(fcport, &ha->fcports, list) { 2155 if (fcport->port_type != FCT_TARGET) 2156 continue; 2157 2158 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) { 2159 2160 if (atomic_read(&fcport->port_down_timer) == 0) 2161 continue; 2162 2163 if (atomic_dec_and_test(&fcport->port_down_timer) != 0) 2164 atomic_set(&fcport->state, FCS_DEVICE_DEAD); 2165 2166 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: " 2167 "%d remainning\n", 2168 ha->host_no, 2169 t, atomic_read(&fcport->port_down_timer))); 2170 } 2171 t++; 2172 } /* End of for fcport */ 2173 2174 2175 /* Loop down handler. */ 2176 if (atomic_read(&ha->loop_down_timer) > 0 && 2177 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) { 2178 2179 if (atomic_read(&ha->loop_down_timer) == 2180 ha->loop_down_abort_time) { 2181 2182 DEBUG(printk("scsi(%ld): Loop Down - aborting the " 2183 "queues before time expire\n", 2184 ha->host_no)); 2185 2186 if (!IS_QLA2100(ha) && ha->link_down_timeout) 2187 atomic_set(&ha->loop_state, LOOP_DEAD); 2188 2189 /* Schedule an ISP abort to return any tape commands. */ 2190 spin_lock_irqsave(&ha->hardware_lock, cpu_flags); 2191 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; 2192 index++) { 2193 fc_port_t *sfcp; 2194 2195 sp = ha->outstanding_cmds[index]; 2196 if (!sp) 2197 continue; 2198 sfcp = sp->fcport; 2199 if (!(sfcp->flags & FCF_TAPE_PRESENT)) 2200 continue; 2201 2202 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 2203 break; 2204 } 2205 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags); 2206 2207 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags); 2208 start_dpc++; 2209 } 2210 2211 /* if the loop has been down for 4 minutes, reinit adapter */ 2212 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) { 2213 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - " 2214 "restarting queues.\n", 2215 ha->host_no)); 2216 2217 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags); 2218 start_dpc++; 2219 2220 if (!(ha->device_flags & DFLG_NO_CABLE)) { 2221 DEBUG(printk("scsi(%ld): Loop down - " 2222 "aborting ISP.\n", 2223 ha->host_no)); 2224 qla_printk(KERN_WARNING, ha, 2225 "Loop down - aborting ISP.\n"); 2226 2227 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 2228 } 2229 } 2230 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n", 2231 ha->host_no, 2232 atomic_read(&ha->loop_down_timer))); 2233 } 2234 2235 /* Schedule the DPC routine if needed */ 2236 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) || 2237 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) || 2238 start_dpc || 2239 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) || 2240 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) || 2241 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && 2242 ha->dpc_wait && !ha->dpc_active) { 2243 2244 up(ha->dpc_wait); 2245 } 2246 2247 qla2x00_restart_timer(ha, WATCH_INTERVAL); 2248 } 2249 2250 /* XXX(hch): crude hack to emulate a down_timeout() */ 2251 int 2252 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout) 2253 { 2254 const unsigned int step = HZ/10; 2255 2256 do { 2257 if (!down_trylock(sema)) 2258 return 0; 2259 set_current_state(TASK_INTERRUPTIBLE); 2260 if (schedule_timeout(step)) 2261 break; 2262 } while ((timeout -= step) > 0); 2263 2264 return -ETIMEDOUT; 2265 } 2266 2267 /** 2268 * qla2x00_module_init - Module initialization. 2269 **/ 2270 static int __init 2271 qla2x00_module_init(void) 2272 { 2273 /* Allocate cache for SRBs. */ 2274 srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0, 2275 SLAB_HWCACHE_ALIGN, NULL, NULL); 2276 if (srb_cachep == NULL) { 2277 printk(KERN_ERR 2278 "qla2xxx: Unable to allocate SRB cache...Failing load!\n"); 2279 return -ENOMEM; 2280 } 2281 2282 /* Derive version string. */ 2283 strcpy(qla2x00_version_str, QLA2XXX_VERSION); 2284 #if DEBUG_QLA2100 2285 strcat(qla2x00_version_str, "-debug"); 2286 #endif 2287 qla2xxx_transport_template = 2288 fc_attach_transport(&qla2xxx_transport_functions); 2289 if (!qla2xxx_transport_template) 2290 return -ENODEV; 2291 2292 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n"); 2293 return 0; 2294 } 2295 2296 /** 2297 * qla2x00_module_exit - Module cleanup. 2298 **/ 2299 static void __exit 2300 qla2x00_module_exit(void) 2301 { 2302 kmem_cache_destroy(srb_cachep); 2303 fc_release_transport(qla2xxx_transport_template); 2304 } 2305 2306 module_init(qla2x00_module_init); 2307 module_exit(qla2x00_module_exit); 2308 2309 MODULE_AUTHOR("QLogic Corporation"); 2310 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver"); 2311 MODULE_LICENSE("GPL"); 2312 MODULE_VERSION(QLA2XXX_VERSION); 2313