shpchp_ctrl.c revision 68c0b671491088d79611fa965bbf94b3bc0024a4
1/* 2 * Standard Hot Plug Controller Driver 3 * 4 * Copyright (C) 1995,2001 Compaq Computer Corporation 5 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) 6 * Copyright (C) 2001 IBM Corp. 7 * Copyright (C) 2003-2004 Intel Corporation 8 * 9 * All rights reserved. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or (at 14 * your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 19 * NON INFRINGEMENT. See the GNU General Public License for more 20 * details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 * 26 * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> 27 * 28 */ 29 30#include <linux/module.h> 31#include <linux/kernel.h> 32#include <linux/types.h> 33#include <linux/smp_lock.h> 34#include <linux/pci.h> 35#include "../pci.h" 36#include "shpchp.h" 37 38static void interrupt_event_handler(struct controller *ctrl); 39 40static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */ 41static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */ 42static int event_finished; 43static unsigned long pushbutton_pending; /* = 0 */ 44 45u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id) 46{ 47 struct controller *ctrl = (struct controller *) inst_id; 48 struct slot *p_slot; 49 u8 rc = 0; 50 u8 getstatus; 51 struct event_info *taskInfo; 52 53 /* Attention Button Change */ 54 dbg("shpchp: Attention button interrupt received.\n"); 55 56 /* This is the structure that tells the worker thread what to do */ 57 taskInfo = &(ctrl->event_queue[ctrl->next_event]); 58 p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 59 60 p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); 61 p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); 62 63 ctrl->next_event = (ctrl->next_event + 1) % 10; 64 taskInfo->hp_slot = hp_slot; 65 66 rc++; 67 68 /* 69 * Button pressed - See if need to TAKE ACTION!!! 70 */ 71 info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot); 72 taskInfo->event_type = INT_BUTTON_PRESS; 73 74 if ((p_slot->state == BLINKINGON_STATE) 75 || (p_slot->state == BLINKINGOFF_STATE)) { 76 /* Cancel if we are still blinking; this means that we press the 77 * attention again before the 5 sec. limit expires to cancel hot-add 78 * or hot-remove 79 */ 80 taskInfo->event_type = INT_BUTTON_CANCEL; 81 info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot); 82 } else if ((p_slot->state == POWERON_STATE) 83 || (p_slot->state == POWEROFF_STATE)) { 84 /* Ignore if the slot is on power-on or power-off state; this 85 * means that the previous attention button action to hot-add or 86 * hot-remove is undergoing 87 */ 88 taskInfo->event_type = INT_BUTTON_IGNORE; 89 info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot); 90 } 91 92 if (rc) 93 up(&event_semaphore); /* signal event thread that new event is posted */ 94 95 return 0; 96 97} 98 99u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id) 100{ 101 struct controller *ctrl = (struct controller *) inst_id; 102 struct slot *p_slot; 103 u8 rc = 0; 104 u8 getstatus; 105 struct event_info *taskInfo; 106 107 /* Switch Change */ 108 dbg("shpchp: Switch interrupt received.\n"); 109 110 /* This is the structure that tells the worker thread 111 * what to do 112 */ 113 taskInfo = &(ctrl->event_queue[ctrl->next_event]); 114 ctrl->next_event = (ctrl->next_event + 1) % 10; 115 taskInfo->hp_slot = hp_slot; 116 117 rc++; 118 p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 119 p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); 120 p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); 121 dbg("%s: Card present %x Power status %x\n", __FUNCTION__, 122 p_slot->presence_save, p_slot->pwr_save); 123 124 if (getstatus) { 125 /* 126 * Switch opened 127 */ 128 info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot); 129 taskInfo->event_type = INT_SWITCH_OPEN; 130 if (p_slot->pwr_save && p_slot->presence_save) { 131 taskInfo->event_type = INT_POWER_FAULT; 132 err("Surprise Removal of card\n"); 133 } 134 } else { 135 /* 136 * Switch closed 137 */ 138 info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot); 139 taskInfo->event_type = INT_SWITCH_CLOSE; 140 } 141 142 if (rc) 143 up(&event_semaphore); /* signal event thread that new event is posted */ 144 145 return rc; 146} 147 148u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id) 149{ 150 struct controller *ctrl = (struct controller *) inst_id; 151 struct slot *p_slot; 152 u8 rc = 0; 153 /*u8 temp_byte;*/ 154 struct event_info *taskInfo; 155 156 /* Presence Change */ 157 dbg("shpchp: Presence/Notify input change.\n"); 158 159 /* This is the structure that tells the worker thread 160 * what to do 161 */ 162 taskInfo = &(ctrl->event_queue[ctrl->next_event]); 163 ctrl->next_event = (ctrl->next_event + 1) % 10; 164 taskInfo->hp_slot = hp_slot; 165 166 rc++; 167 p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 168 169 /* 170 * Save the presence state 171 */ 172 p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); 173 if (p_slot->presence_save) { 174 /* 175 * Card Present 176 */ 177 info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot); 178 taskInfo->event_type = INT_PRESENCE_ON; 179 } else { 180 /* 181 * Not Present 182 */ 183 info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot); 184 taskInfo->event_type = INT_PRESENCE_OFF; 185 } 186 187 if (rc) 188 up(&event_semaphore); /* signal event thread that new event is posted */ 189 190 return rc; 191} 192 193u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id) 194{ 195 struct controller *ctrl = (struct controller *) inst_id; 196 struct slot *p_slot; 197 u8 rc = 0; 198 struct event_info *taskInfo; 199 200 /* Power fault */ 201 dbg("shpchp: Power fault interrupt received.\n"); 202 203 /* This is the structure that tells the worker thread 204 * what to do 205 */ 206 taskInfo = &(ctrl->event_queue[ctrl->next_event]); 207 ctrl->next_event = (ctrl->next_event + 1) % 10; 208 taskInfo->hp_slot = hp_slot; 209 210 rc++; 211 p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 212 213 if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { 214 /* 215 * Power fault Cleared 216 */ 217 info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot); 218 p_slot->status = 0x00; 219 taskInfo->event_type = INT_POWER_FAULT_CLEAR; 220 } else { 221 /* 222 * Power fault 223 */ 224 info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot); 225 taskInfo->event_type = INT_POWER_FAULT; 226 /* set power fault status for this board */ 227 p_slot->status = 0xFF; 228 info("power fault bit %x set\n", hp_slot); 229 } 230 if (rc) 231 up(&event_semaphore); /* signal event thread that new event is posted */ 232 233 return rc; 234} 235 236/* The following routines constitute the bulk of the 237 hotplug controller logic 238 */ 239static int change_bus_speed(struct controller *ctrl, struct slot *p_slot, 240 enum pci_bus_speed speed) 241{ 242 int rc = 0; 243 244 dbg("%s: change to speed %d\n", __FUNCTION__, speed); 245 if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { 246 err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); 247 return WRONG_BUS_FREQUENCY; 248 } 249 return rc; 250} 251 252static int fix_bus_speed(struct controller *ctrl, struct slot *pslot, 253 u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp, 254 enum pci_bus_speed msp) 255{ 256 int rc = 0; 257 258 if (flag != 0) { /* Other slots on the same bus are occupied */ 259 if ( asp < bsp ) { 260 err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp); 261 return WRONG_BUS_FREQUENCY; 262 } 263 } else { 264 /* Other slots on the same bus are empty */ 265 if (msp == bsp) { 266 /* if adapter_speed >= bus_speed, do nothing */ 267 if (asp < bsp) { 268 /* 269 * Try to lower bus speed to accommodate the adapter if other slots 270 * on the same controller are empty 271 */ 272 if ((rc = change_bus_speed(ctrl, pslot, asp))) 273 return rc; 274 } 275 } else { 276 if (asp < msp) { 277 if ((rc = change_bus_speed(ctrl, pslot, asp))) 278 return rc; 279 } else { 280 if ((rc = change_bus_speed(ctrl, pslot, msp))) 281 return rc; 282 } 283 } 284 } 285 return rc; 286} 287 288/** 289 * board_added - Called after a board has been added to the system. 290 * 291 * Turns power on for the board 292 * Configures board 293 * 294 */ 295static int board_added(struct slot *p_slot) 296{ 297 u8 hp_slot; 298 u8 slots_not_empty = 0; 299 int rc = 0; 300 enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed; 301 u8 pi, mode; 302 struct controller *ctrl = p_slot->ctrl; 303 304 hp_slot = p_slot->device - ctrl->slot_device_offset; 305 306 dbg("%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", 307 __FUNCTION__, p_slot->device, 308 ctrl->slot_device_offset, hp_slot); 309 310 /* Power on slot without connecting to bus */ 311 rc = p_slot->hpc_ops->power_on_slot(p_slot); 312 if (rc) { 313 err("%s: Failed to power on slot\n", __FUNCTION__); 314 return -1; 315 } 316 317 if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { 318 if (slots_not_empty) 319 return WRONG_BUS_FREQUENCY; 320 321 if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { 322 err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); 323 return WRONG_BUS_FREQUENCY; 324 } 325 326 /* turn on board, blink green LED, turn off Amber LED */ 327 if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { 328 err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); 329 return rc; 330 } 331 } 332 333 rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed); 334 /* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */ 335 /* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */ 336 /* 0xd = PCI-X 133 Mhz 533 */ 337 /* This encoding is different from the one used in cur_bus_speed & */ 338 /* max_bus_speed */ 339 340 if (rc || adapter_speed == PCI_SPEED_UNKNOWN) { 341 err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__); 342 return WRONG_BUS_FREQUENCY; 343 } 344 345 rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed); 346 if (rc || bus_speed == PCI_SPEED_UNKNOWN) { 347 err("%s: Can't get bus operation speed\n", __FUNCTION__); 348 return WRONG_BUS_FREQUENCY; 349 } 350 351 rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed); 352 if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) { 353 err("%s: Can't get max bus operation speed\n", __FUNCTION__); 354 max_bus_speed = bus_speed; 355 } 356 357 if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) { 358 err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__); 359 pi = 1; 360 } 361 362 /* Check if there are other slots or devices on the same bus */ 363 if (!list_empty(&ctrl->pci_dev->subordinate->devices)) 364 slots_not_empty = 1; 365 366 dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__, 367 slots_not_empty, pi); 368 dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n", 369 adapter_speed, bus_speed, max_bus_speed); 370 371 if (pi == 2) { 372 dbg("%s: In PI = %d\n", __FUNCTION__, pi); 373 if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) { 374 err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__); 375 mode = 0; 376 } 377 378 switch (adapter_speed) { 379 case PCI_SPEED_133MHz_PCIX_533: 380 case PCI_SPEED_133MHz_PCIX_266: 381 if ((bus_speed != adapter_speed) && 382 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 383 return rc; 384 break; 385 case PCI_SPEED_133MHz_PCIX_ECC: 386 case PCI_SPEED_133MHz_PCIX: 387 if (mode) { /* Bus - Mode 1 ECC */ 388 if ((bus_speed != 0x7) && 389 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 390 return rc; 391 } else { 392 if ((bus_speed != 0x4) && 393 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 394 return rc; 395 } 396 break; 397 case PCI_SPEED_66MHz_PCIX_ECC: 398 case PCI_SPEED_66MHz_PCIX: 399 if (mode) { /* Bus - Mode 1 ECC */ 400 if ((bus_speed != 0x5) && 401 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 402 return rc; 403 } else { 404 if ((bus_speed != 0x2) && 405 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 406 return rc; 407 } 408 break; 409 case PCI_SPEED_66MHz: 410 if ((bus_speed != 0x1) && 411 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 412 return rc; 413 break; 414 case PCI_SPEED_33MHz: 415 if (bus_speed > 0x0) { 416 if (slots_not_empty == 0) { 417 if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed))) 418 return rc; 419 } else { 420 err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); 421 return WRONG_BUS_FREQUENCY; 422 } 423 } 424 break; 425 default: 426 err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); 427 return WRONG_BUS_FREQUENCY; 428 } 429 } else { 430 /* If adpater_speed == bus_speed, nothing to do here */ 431 dbg("%s: In PI = %d\n", __FUNCTION__, pi); 432 if ((adapter_speed != bus_speed) && 433 ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) 434 return rc; 435 } 436 437 /* turn on board, blink green LED, turn off Amber LED */ 438 if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { 439 err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); 440 return rc; 441 } 442 443 /* Wait for ~1 second */ 444 msleep(1000); 445 446 dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status); 447 /* Check for a power fault */ 448 if (p_slot->status == 0xFF) { 449 /* power fault occurred, but it was benign */ 450 dbg("%s: power fault\n", __FUNCTION__); 451 rc = POWER_FAILURE; 452 p_slot->status = 0; 453 goto err_exit; 454 } 455 456 if (shpchp_configure_device(p_slot)) { 457 err("Cannot add device at 0x%x:0x%x\n", p_slot->bus, 458 p_slot->device); 459 goto err_exit; 460 } 461 462 p_slot->status = 0; 463 p_slot->is_a_board = 0x01; 464 p_slot->pwr_save = 1; 465 466 p_slot->hpc_ops->green_led_on(p_slot); 467 468 return 0; 469 470err_exit: 471 /* turn off slot, turn on Amber LED, turn off Green LED */ 472 rc = p_slot->hpc_ops->slot_disable(p_slot); 473 if (rc) { 474 err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); 475 return rc; 476 } 477 478 return(rc); 479} 480 481 482/** 483 * remove_board - Turns off slot and LED's 484 * 485 */ 486static int remove_board(struct slot *p_slot) 487{ 488 struct controller *ctrl = p_slot->ctrl; 489 u8 hp_slot; 490 int rc; 491 492 if (shpchp_unconfigure_device(p_slot)) 493 return(1); 494 495 hp_slot = p_slot->device - ctrl->slot_device_offset; 496 p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 497 498 dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); 499 500 /* Change status to shutdown */ 501 if (p_slot->is_a_board) 502 p_slot->status = 0x01; 503 504 /* turn off slot, turn on Amber LED, turn off Green LED */ 505 rc = p_slot->hpc_ops->slot_disable(p_slot); 506 if (rc) { 507 err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); 508 return rc; 509 } 510 511 rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); 512 if (rc) { 513 err("%s: Issue of Set Attention command failed\n", __FUNCTION__); 514 return rc; 515 } 516 517 p_slot->pwr_save = 0; 518 p_slot->is_a_board = 0; 519 520 return 0; 521} 522 523 524static void pushbutton_helper_thread (unsigned long data) 525{ 526 pushbutton_pending = data; 527 528 up(&event_semaphore); 529} 530 531 532/** 533 * shpchp_pushbutton_thread 534 * 535 * Scheduled procedure to handle blocking stuff for the pushbuttons 536 * Handles all pending events and exits. 537 * 538 */ 539static void shpchp_pushbutton_thread (unsigned long slot) 540{ 541 struct slot *p_slot = (struct slot *) slot; 542 u8 getstatus; 543 544 pushbutton_pending = 0; 545 546 if (!p_slot) { 547 dbg("%s: Error! slot NULL\n", __FUNCTION__); 548 return; 549 } 550 551 p_slot->hpc_ops->get_power_status(p_slot, &getstatus); 552 if (getstatus) { 553 p_slot->state = POWEROFF_STATE; 554 555 shpchp_disable_slot(p_slot); 556 p_slot->state = STATIC_STATE; 557 } else { 558 p_slot->state = POWERON_STATE; 559 560 if (shpchp_enable_slot(p_slot)) 561 p_slot->hpc_ops->green_led_off(p_slot); 562 563 p_slot->state = STATIC_STATE; 564 } 565 566 return; 567} 568 569 570/* this is the main worker thread */ 571static int event_thread(void* data) 572{ 573 struct controller *ctrl; 574 lock_kernel(); 575 daemonize("shpchpd_event"); 576 unlock_kernel(); 577 578 while (1) { 579 dbg("!!!!event_thread sleeping\n"); 580 down_interruptible (&event_semaphore); 581 dbg("event_thread woken finished = %d\n", event_finished); 582 if (event_finished || signal_pending(current)) 583 break; 584 /* Do stuff here */ 585 if (pushbutton_pending) 586 shpchp_pushbutton_thread(pushbutton_pending); 587 else 588 list_for_each_entry(ctrl, &shpchp_ctrl_list, ctrl_list) 589 interrupt_event_handler(ctrl); 590 } 591 dbg("event_thread signals exit\n"); 592 up(&event_exit); 593 return 0; 594} 595 596int shpchp_event_start_thread (void) 597{ 598 int pid; 599 600 /* initialize our semaphores */ 601 init_MUTEX_LOCKED(&event_exit); 602 event_finished=0; 603 604 init_MUTEX_LOCKED(&event_semaphore); 605 pid = kernel_thread(event_thread, NULL, 0); 606 607 if (pid < 0) { 608 err ("Can't start up our event thread\n"); 609 return -1; 610 } 611 return 0; 612} 613 614 615void shpchp_event_stop_thread (void) 616{ 617 event_finished = 1; 618 up(&event_semaphore); 619 down(&event_exit); 620} 621 622 623static int update_slot_info (struct slot *slot) 624{ 625 struct hotplug_slot_info *info; 626 int result; 627 628 info = kmalloc(sizeof(*info), GFP_KERNEL); 629 if (!info) 630 return -ENOMEM; 631 632 slot->hpc_ops->get_power_status(slot, &(info->power_status)); 633 slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); 634 slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); 635 slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); 636 637 result = pci_hp_change_slot_info(slot->hotplug_slot, info); 638 kfree (info); 639 return result; 640} 641 642static void interrupt_event_handler(struct controller *ctrl) 643{ 644 int loop = 0; 645 int change = 1; 646 u8 hp_slot; 647 u8 getstatus; 648 struct slot *p_slot; 649 650 while (change) { 651 change = 0; 652 653 for (loop = 0; loop < 10; loop++) { 654 if (ctrl->event_queue[loop].event_type != 0) { 655 dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop, 656 ctrl->event_queue[loop].event_type); 657 hp_slot = ctrl->event_queue[loop].hp_slot; 658 659 p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 660 661 if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) { 662 dbg("%s: button cancel\n", __FUNCTION__); 663 del_timer(&p_slot->task_event); 664 665 switch (p_slot->state) { 666 case BLINKINGOFF_STATE: 667 p_slot->hpc_ops->green_led_on(p_slot); 668 p_slot->hpc_ops->set_attention_status(p_slot, 0); 669 break; 670 case BLINKINGON_STATE: 671 p_slot->hpc_ops->green_led_off(p_slot); 672 p_slot->hpc_ops->set_attention_status(p_slot, 0); 673 break; 674 default: 675 warn("Not a valid state\n"); 676 return; 677 } 678 info(msg_button_cancel, p_slot->number); 679 p_slot->state = STATIC_STATE; 680 } else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { 681 /* Button Pressed (No action on 1st press...) */ 682 dbg("%s: Button pressed\n", __FUNCTION__); 683 684 p_slot->hpc_ops->get_power_status(p_slot, &getstatus); 685 if (getstatus) { 686 /* slot is on */ 687 dbg("%s: slot is on\n", __FUNCTION__); 688 p_slot->state = BLINKINGOFF_STATE; 689 info(msg_button_off, p_slot->number); 690 } else { 691 /* slot is off */ 692 dbg("%s: slot is off\n", __FUNCTION__); 693 p_slot->state = BLINKINGON_STATE; 694 info(msg_button_on, p_slot->number); 695 } 696 697 /* blink green LED and turn off amber */ 698 p_slot->hpc_ops->green_led_blink(p_slot); 699 p_slot->hpc_ops->set_attention_status(p_slot, 0); 700 701 init_timer(&p_slot->task_event); 702 p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ 703 p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread; 704 p_slot->task_event.data = (unsigned long) p_slot; 705 706 dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot); 707 add_timer(&p_slot->task_event); 708 } else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { 709 /***********POWER FAULT********************/ 710 dbg("%s: power fault\n", __FUNCTION__); 711 p_slot->hpc_ops->set_attention_status(p_slot, 1); 712 p_slot->hpc_ops->green_led_off(p_slot); 713 } else { 714 /* refresh notification */ 715 if (p_slot) 716 update_slot_info(p_slot); 717 } 718 719 ctrl->event_queue[loop].event_type = 0; 720 721 change = 1; 722 } 723 } /* End of FOR loop */ 724 } 725 726 return; 727} 728 729 730int shpchp_enable_slot (struct slot *p_slot) 731{ 732 u8 getstatus = 0; 733 int rc, retval = -ENODEV; 734 735 /* Check to see if (latch closed, card present, power off) */ 736 mutex_lock(&p_slot->ctrl->crit_sect); 737 rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); 738 if (rc || !getstatus) { 739 info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); 740 goto out; 741 } 742 rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); 743 if (rc || getstatus) { 744 info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); 745 goto out; 746 } 747 rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); 748 if (rc || getstatus) { 749 info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number); 750 goto out; 751 } 752 753 p_slot->is_a_board = 1; 754 755 /* We have to save the presence info for these slots */ 756 p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); 757 p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); 758 dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__, p_slot->pwr_save); 759 p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); 760 761 if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || 762 (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) 763 && p_slot->ctrl->num_slots == 1) { 764 /* handle amd pogo errata; this must be done before enable */ 765 amd_pogo_errata_save_misc_reg(p_slot); 766 retval = board_added(p_slot); 767 /* handle amd pogo errata; this must be done after enable */ 768 amd_pogo_errata_restore_misc_reg(p_slot); 769 } else 770 retval = board_added(p_slot); 771 772 if (retval) { 773 p_slot->hpc_ops->get_adapter_status(p_slot, 774 &(p_slot->presence_save)); 775 p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); 776 } 777 778 update_slot_info(p_slot); 779 out: 780 mutex_unlock(&p_slot->ctrl->crit_sect); 781 return retval; 782} 783 784 785int shpchp_disable_slot (struct slot *p_slot) 786{ 787 u8 getstatus = 0; 788 int rc, retval = -ENODEV; 789 790 if (!p_slot->ctrl) 791 return -ENODEV; 792 793 /* Check to see if (latch closed, card present, power on) */ 794 mutex_lock(&p_slot->ctrl->crit_sect); 795 796 rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); 797 if (rc || !getstatus) { 798 info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); 799 goto out; 800 } 801 rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); 802 if (rc || getstatus) { 803 info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); 804 goto out; 805 } 806 rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); 807 if (rc || !getstatus) { 808 info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number); 809 goto out; 810 } 811 812 retval = remove_board(p_slot); 813 update_slot_info(p_slot); 814 out: 815 mutex_unlock(&p_slot->ctrl->crit_sect); 816 return retval; 817} 818 819