1 /* 2 * Compaq 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 * 8 * All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or (at 13 * your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 18 * NON INFRINGEMENT. See the GNU General Public License for more 19 * details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 * 25 * Send feedback to <greg@kroah.com> 26 * 27 * Jan 12, 2003 - Added 66/100/133MHz PCI-X support, 28 * Torben Mathiasen <torben.mathiasen@hp.com> 29 */ 30 31 #include <linux/module.h> 32 #include <linux/moduleparam.h> 33 #include <linux/kernel.h> 34 #include <linux/types.h> 35 #include <linux/proc_fs.h> 36 #include <linux/slab.h> 37 #include <linux/workqueue.h> 38 #include <linux/pci.h> 39 #include <linux/pci_hotplug.h> 40 #include <linux/init.h> 41 #include <linux/interrupt.h> 42 43 #include <asm/uaccess.h> 44 45 #include "cpqphp.h" 46 #include "cpqphp_nvram.h" 47 48 49 /* Global variables */ 50 int cpqhp_debug; 51 int cpqhp_legacy_mode; 52 struct controller *cpqhp_ctrl_list; /* = NULL */ 53 struct pci_func *cpqhp_slot_list[256]; 54 struct irq_routing_table *cpqhp_routing_table; 55 56 /* local variables */ 57 static void __iomem *smbios_table; 58 static void __iomem *smbios_start; 59 static void __iomem *cpqhp_rom_start; 60 static int power_mode; 61 static int debug; 62 static int initialized; 63 64 #define DRIVER_VERSION "0.9.8" 65 #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>" 66 #define DRIVER_DESC "Compaq Hot Plug PCI Controller Driver" 67 68 MODULE_AUTHOR(DRIVER_AUTHOR); 69 MODULE_DESCRIPTION(DRIVER_DESC); 70 MODULE_LICENSE("GPL"); 71 72 module_param(power_mode, bool, 0644); 73 MODULE_PARM_DESC(power_mode, "Power mode enabled or not"); 74 75 module_param(debug, bool, 0644); 76 MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); 77 78 #define CPQHPC_MODULE_MINOR 208 79 80 static inline int is_slot64bit(struct slot *slot) 81 { 82 return (readb(slot->p_sm_slot + SMBIOS_SLOT_WIDTH) == 0x06) ? 1 : 0; 83 } 84 85 static inline int is_slot66mhz(struct slot *slot) 86 { 87 return (readb(slot->p_sm_slot + SMBIOS_SLOT_TYPE) == 0x0E) ? 1 : 0; 88 } 89 90 /** 91 * detect_SMBIOS_pointer - find the System Management BIOS Table in mem region. 92 * @begin: begin pointer for region to be scanned. 93 * @end: end pointer for region to be scanned. 94 * 95 * Returns pointer to the head of the SMBIOS tables (or %NULL). 96 */ 97 static void __iomem * detect_SMBIOS_pointer(void __iomem *begin, void __iomem *end) 98 { 99 void __iomem *fp; 100 void __iomem *endp; 101 u8 temp1, temp2, temp3, temp4; 102 int status = 0; 103 104 endp = (end - sizeof(u32) + 1); 105 106 for (fp = begin; fp <= endp; fp += 16) { 107 temp1 = readb(fp); 108 temp2 = readb(fp+1); 109 temp3 = readb(fp+2); 110 temp4 = readb(fp+3); 111 if (temp1 == '_' && 112 temp2 == 'S' && 113 temp3 == 'M' && 114 temp4 == '_') { 115 status = 1; 116 break; 117 } 118 } 119 120 if (!status) 121 fp = NULL; 122 123 dbg("Discovered SMBIOS Entry point at %p\n", fp); 124 125 return fp; 126 } 127 128 /** 129 * init_SERR - Initializes the per slot SERR generation. 130 * @ctrl: controller to use 131 * 132 * For unexpected switch opens 133 */ 134 static int init_SERR(struct controller * ctrl) 135 { 136 u32 tempdword; 137 u32 number_of_slots; 138 u8 physical_slot; 139 140 if (!ctrl) 141 return 1; 142 143 tempdword = ctrl->first_slot; 144 145 number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; 146 /* Loop through slots */ 147 while (number_of_slots) { 148 physical_slot = tempdword; 149 writeb(0, ctrl->hpc_reg + SLOT_SERR); 150 tempdword++; 151 number_of_slots--; 152 } 153 154 return 0; 155 } 156 157 static int init_cpqhp_routing_table(void) 158 { 159 int len; 160 161 cpqhp_routing_table = pcibios_get_irq_routing_table(); 162 if (cpqhp_routing_table == NULL) 163 return -ENOMEM; 164 165 len = cpqhp_routing_table_length(); 166 if (len == 0) { 167 kfree(cpqhp_routing_table); 168 cpqhp_routing_table = NULL; 169 return -1; 170 } 171 172 return 0; 173 } 174 175 /* nice debugging output */ 176 static void pci_print_IRQ_route(void) 177 { 178 int len; 179 int loop; 180 u8 tbus, tdevice, tslot; 181 182 len = cpqhp_routing_table_length(); 183 184 dbg("bus dev func slot\n"); 185 for (loop = 0; loop < len; ++loop) { 186 tbus = cpqhp_routing_table->slots[loop].bus; 187 tdevice = cpqhp_routing_table->slots[loop].devfn; 188 tslot = cpqhp_routing_table->slots[loop].slot; 189 dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot); 190 191 } 192 return; 193 } 194 195 196 /** 197 * get_subsequent_smbios_entry: get the next entry from bios table. 198 * @smbios_start: where to start in the SMBIOS table 199 * @smbios_table: location of the SMBIOS table 200 * @curr: %NULL or pointer to previously returned structure 201 * 202 * Gets the first entry if previous == NULL; 203 * otherwise, returns the next entry. 204 * Uses global SMBIOS Table pointer. 205 * 206 * Returns a pointer to an SMBIOS structure or NULL if none found. 207 */ 208 static void __iomem *get_subsequent_smbios_entry(void __iomem *smbios_start, 209 void __iomem *smbios_table, 210 void __iomem *curr) 211 { 212 u8 bail = 0; 213 u8 previous_byte = 1; 214 void __iomem *p_temp; 215 void __iomem *p_max; 216 217 if (!smbios_table || !curr) 218 return NULL; 219 220 /* set p_max to the end of the table */ 221 p_max = smbios_start + readw(smbios_table + ST_LENGTH); 222 223 p_temp = curr; 224 p_temp += readb(curr + SMBIOS_GENERIC_LENGTH); 225 226 while ((p_temp < p_max) && !bail) { 227 /* Look for the double NULL terminator 228 * The first condition is the previous byte 229 * and the second is the curr 230 */ 231 if (!previous_byte && !(readb(p_temp))) 232 bail = 1; 233 234 previous_byte = readb(p_temp); 235 p_temp++; 236 } 237 238 if (p_temp < p_max) 239 return p_temp; 240 else 241 return NULL; 242 } 243 244 245 /** 246 * get_SMBIOS_entry - return the requested SMBIOS entry or %NULL 247 * @smbios_start: where to start in the SMBIOS table 248 * @smbios_table: location of the SMBIOS table 249 * @type: SMBIOS structure type to be returned 250 * @previous: %NULL or pointer to previously returned structure 251 * 252 * Gets the first entry of the specified type if previous == %NULL; 253 * Otherwise, returns the next entry of the given type. 254 * Uses global SMBIOS Table pointer. 255 * Uses get_subsequent_smbios_entry. 256 * 257 * Returns a pointer to an SMBIOS structure or %NULL if none found. 258 */ 259 static void __iomem *get_SMBIOS_entry(void __iomem *smbios_start, 260 void __iomem *smbios_table, 261 u8 type, 262 void __iomem *previous) 263 { 264 if (!smbios_table) 265 return NULL; 266 267 if (!previous) 268 previous = smbios_start; 269 else 270 previous = get_subsequent_smbios_entry(smbios_start, 271 smbios_table, previous); 272 273 while (previous) 274 if (readb(previous + SMBIOS_GENERIC_TYPE) != type) 275 previous = get_subsequent_smbios_entry(smbios_start, 276 smbios_table, previous); 277 else 278 break; 279 280 return previous; 281 } 282 283 static void release_slot(struct hotplug_slot *hotplug_slot) 284 { 285 struct slot *slot = hotplug_slot->private; 286 287 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 288 289 kfree(slot->hotplug_slot->info); 290 kfree(slot->hotplug_slot); 291 kfree(slot); 292 } 293 294 static int ctrl_slot_cleanup (struct controller * ctrl) 295 { 296 struct slot *old_slot, *next_slot; 297 298 old_slot = ctrl->slot; 299 ctrl->slot = NULL; 300 301 while (old_slot) { 302 /* memory will be freed by the release_slot callback */ 303 next_slot = old_slot->next; 304 pci_hp_deregister (old_slot->hotplug_slot); 305 old_slot = next_slot; 306 } 307 308 cpqhp_remove_debugfs_files(ctrl); 309 310 /* Free IRQ associated with hot plug device */ 311 free_irq(ctrl->interrupt, ctrl); 312 /* Unmap the memory */ 313 iounmap(ctrl->hpc_reg); 314 /* Finally reclaim PCI mem */ 315 release_mem_region(pci_resource_start(ctrl->pci_dev, 0), 316 pci_resource_len(ctrl->pci_dev, 0)); 317 318 return 0; 319 } 320 321 322 /** 323 * get_slot_mapping - determine logical slot mapping for PCI device 324 * 325 * Won't work for more than one PCI-PCI bridge in a slot. 326 * 327 * @bus_num - bus number of PCI device 328 * @dev_num - device number of PCI device 329 * @slot - Pointer to u8 where slot number will be returned 330 * 331 * Output: SUCCESS or FAILURE 332 */ 333 static int 334 get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot) 335 { 336 u32 work; 337 long len; 338 long loop; 339 340 u8 tbus, tdevice, tslot, bridgeSlot; 341 342 dbg("%s: %p, %d, %d, %p\n", __func__, bus, bus_num, dev_num, slot); 343 344 bridgeSlot = 0xFF; 345 346 len = cpqhp_routing_table_length(); 347 for (loop = 0; loop < len; ++loop) { 348 tbus = cpqhp_routing_table->slots[loop].bus; 349 tdevice = cpqhp_routing_table->slots[loop].devfn >> 3; 350 tslot = cpqhp_routing_table->slots[loop].slot; 351 352 if ((tbus == bus_num) && (tdevice == dev_num)) { 353 *slot = tslot; 354 return 0; 355 } else { 356 /* Did not get a match on the target PCI device. Check 357 * if the current IRQ table entry is a PCI-to-PCI 358 * bridge device. If so, and it's secondary bus 359 * matches the bus number for the target device, I need 360 * to save the bridge's slot number. If I can not find 361 * an entry for the target device, I will have to 362 * assume it's on the other side of the bridge, and 363 * assign it the bridge's slot. 364 */ 365 bus->number = tbus; 366 pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0), 367 PCI_CLASS_REVISION, &work); 368 369 if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) { 370 pci_bus_read_config_dword(bus, 371 PCI_DEVFN(tdevice, 0), 372 PCI_PRIMARY_BUS, &work); 373 // See if bridge's secondary bus matches target bus. 374 if (((work >> 8) & 0x000000FF) == (long) bus_num) 375 bridgeSlot = tslot; 376 } 377 } 378 379 } 380 381 /* If we got here, we didn't find an entry in the IRQ mapping table for 382 * the target PCI device. If we did determine that the target device 383 * is on the other side of a PCI-to-PCI bridge, return the slot number 384 * for the bridge. 385 */ 386 if (bridgeSlot != 0xFF) { 387 *slot = bridgeSlot; 388 return 0; 389 } 390 /* Couldn't find an entry in the routing table for this PCI device */ 391 return -1; 392 } 393 394 395 /** 396 * cpqhp_set_attention_status - Turns the Amber LED for a slot on or off 397 * @ctrl: struct controller to use 398 * @func: PCI device/function info 399 * @status: LED control flag: 1 = LED on, 0 = LED off 400 */ 401 static int 402 cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func, 403 u32 status) 404 { 405 u8 hp_slot; 406 407 if (func == NULL) 408 return 1; 409 410 hp_slot = func->device - ctrl->slot_device_offset; 411 412 /* Wait for exclusive access to hardware */ 413 mutex_lock(&ctrl->crit_sect); 414 415 if (status == 1) 416 amber_LED_on (ctrl, hp_slot); 417 else if (status == 0) 418 amber_LED_off (ctrl, hp_slot); 419 else { 420 /* Done with exclusive hardware access */ 421 mutex_unlock(&ctrl->crit_sect); 422 return 1; 423 } 424 425 set_SOGO(ctrl); 426 427 /* Wait for SOBS to be unset */ 428 wait_for_ctrl_irq (ctrl); 429 430 /* Done with exclusive hardware access */ 431 mutex_unlock(&ctrl->crit_sect); 432 433 return 0; 434 } 435 436 437 /** 438 * set_attention_status - Turns the Amber LED for a slot on or off 439 * @hotplug_slot: slot to change LED on 440 * @status: LED control flag 441 */ 442 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) 443 { 444 struct pci_func *slot_func; 445 struct slot *slot = hotplug_slot->private; 446 struct controller *ctrl = slot->ctrl; 447 u8 bus; 448 u8 devfn; 449 u8 device; 450 u8 function; 451 452 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 453 454 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) 455 return -ENODEV; 456 457 device = devfn >> 3; 458 function = devfn & 0x7; 459 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); 460 461 slot_func = cpqhp_slot_find(bus, device, function); 462 if (!slot_func) 463 return -ENODEV; 464 465 return cpqhp_set_attention_status(ctrl, slot_func, status); 466 } 467 468 469 static int process_SI(struct hotplug_slot *hotplug_slot) 470 { 471 struct pci_func *slot_func; 472 struct slot *slot = hotplug_slot->private; 473 struct controller *ctrl = slot->ctrl; 474 u8 bus; 475 u8 devfn; 476 u8 device; 477 u8 function; 478 479 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 480 481 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) 482 return -ENODEV; 483 484 device = devfn >> 3; 485 function = devfn & 0x7; 486 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); 487 488 slot_func = cpqhp_slot_find(bus, device, function); 489 if (!slot_func) 490 return -ENODEV; 491 492 slot_func->bus = bus; 493 slot_func->device = device; 494 slot_func->function = function; 495 slot_func->configured = 0; 496 dbg("board_added(%p, %p)\n", slot_func, ctrl); 497 return cpqhp_process_SI(ctrl, slot_func); 498 } 499 500 501 static int process_SS(struct hotplug_slot *hotplug_slot) 502 { 503 struct pci_func *slot_func; 504 struct slot *slot = hotplug_slot->private; 505 struct controller *ctrl = slot->ctrl; 506 u8 bus; 507 u8 devfn; 508 u8 device; 509 u8 function; 510 511 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 512 513 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) 514 return -ENODEV; 515 516 device = devfn >> 3; 517 function = devfn & 0x7; 518 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); 519 520 slot_func = cpqhp_slot_find(bus, device, function); 521 if (!slot_func) 522 return -ENODEV; 523 524 dbg("In %s, slot_func = %p, ctrl = %p\n", __func__, slot_func, ctrl); 525 return cpqhp_process_SS(ctrl, slot_func); 526 } 527 528 529 static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value) 530 { 531 struct slot *slot = hotplug_slot->private; 532 struct controller *ctrl = slot->ctrl; 533 534 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 535 536 return cpqhp_hardware_test(ctrl, value); 537 } 538 539 540 static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) 541 { 542 struct slot *slot = hotplug_slot->private; 543 struct controller *ctrl = slot->ctrl; 544 545 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 546 547 *value = get_slot_enabled(ctrl, slot); 548 return 0; 549 } 550 551 static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) 552 { 553 struct slot *slot = hotplug_slot->private; 554 struct controller *ctrl = slot->ctrl; 555 556 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 557 558 *value = cpq_get_attention_status(ctrl, slot); 559 return 0; 560 } 561 562 static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) 563 { 564 struct slot *slot = hotplug_slot->private; 565 struct controller *ctrl = slot->ctrl; 566 567 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 568 569 *value = cpq_get_latch_status(ctrl, slot); 570 571 return 0; 572 } 573 574 static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) 575 { 576 struct slot *slot = hotplug_slot->private; 577 struct controller *ctrl = slot->ctrl; 578 579 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 580 581 *value = get_presence_status(ctrl, slot); 582 583 return 0; 584 } 585 586 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) 587 { 588 struct slot *slot = hotplug_slot->private; 589 struct controller *ctrl = slot->ctrl; 590 591 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 592 593 *value = ctrl->speed_capability; 594 595 return 0; 596 } 597 598 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) 599 { 600 struct slot *slot = hotplug_slot->private; 601 struct controller *ctrl = slot->ctrl; 602 603 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot)); 604 605 *value = ctrl->speed; 606 607 return 0; 608 } 609 610 static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = { 611 .set_attention_status = set_attention_status, 612 .enable_slot = process_SI, 613 .disable_slot = process_SS, 614 .hardware_test = hardware_test, 615 .get_power_status = get_power_status, 616 .get_attention_status = get_attention_status, 617 .get_latch_status = get_latch_status, 618 .get_adapter_status = get_adapter_status, 619 .get_max_bus_speed = get_max_bus_speed, 620 .get_cur_bus_speed = get_cur_bus_speed, 621 }; 622 623 #define SLOT_NAME_SIZE 10 624 625 static int ctrl_slot_setup(struct controller *ctrl, 626 void __iomem *smbios_start, 627 void __iomem *smbios_table) 628 { 629 struct slot *slot; 630 struct hotplug_slot *hotplug_slot; 631 struct hotplug_slot_info *hotplug_slot_info; 632 u8 number_of_slots; 633 u8 slot_device; 634 u8 slot_number; 635 u8 ctrl_slot; 636 u32 tempdword; 637 char name[SLOT_NAME_SIZE]; 638 void __iomem *slot_entry= NULL; 639 int result = -ENOMEM; 640 641 dbg("%s\n", __func__); 642 643 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); 644 645 number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; 646 slot_device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; 647 slot_number = ctrl->first_slot; 648 649 while (number_of_slots) { 650 slot = kzalloc(sizeof(*slot), GFP_KERNEL); 651 if (!slot) 652 goto error; 653 654 slot->hotplug_slot = kzalloc(sizeof(*(slot->hotplug_slot)), 655 GFP_KERNEL); 656 if (!slot->hotplug_slot) 657 goto error_slot; 658 hotplug_slot = slot->hotplug_slot; 659 660 hotplug_slot->info = kzalloc(sizeof(*(hotplug_slot->info)), 661 GFP_KERNEL); 662 if (!hotplug_slot->info) 663 goto error_hpslot; 664 hotplug_slot_info = hotplug_slot->info; 665 666 slot->ctrl = ctrl; 667 slot->bus = ctrl->bus; 668 slot->device = slot_device; 669 slot->number = slot_number; 670 dbg("slot->number = %u\n", slot->number); 671 672 slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9, 673 slot_entry); 674 675 while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != 676 slot->number)) { 677 slot_entry = get_SMBIOS_entry(smbios_start, 678 smbios_table, 9, slot_entry); 679 } 680 681 slot->p_sm_slot = slot_entry; 682 683 init_timer(&slot->task_event); 684 slot->task_event.expires = jiffies + 5 * HZ; 685 slot->task_event.function = cpqhp_pushbutton_thread; 686 687 /*FIXME: these capabilities aren't used but if they are 688 * they need to be correctly implemented 689 */ 690 slot->capabilities |= PCISLOT_REPLACE_SUPPORTED; 691 slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED; 692 693 if (is_slot64bit(slot)) 694 slot->capabilities |= PCISLOT_64_BIT_SUPPORTED; 695 if (is_slot66mhz(slot)) 696 slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED; 697 if (ctrl->speed == PCI_SPEED_66MHz) 698 slot->capabilities |= PCISLOT_66_MHZ_OPERATION; 699 700 ctrl_slot = 701 slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4); 702 703 /* Check presence */ 704 slot->capabilities |= 705 ((((~tempdword) >> 23) | 706 ((~tempdword) >> 15)) >> ctrl_slot) & 0x02; 707 /* Check the switch state */ 708 slot->capabilities |= 709 ((~tempdword & 0xFF) >> ctrl_slot) & 0x01; 710 /* Check the slot enable */ 711 slot->capabilities |= 712 ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04; 713 714 /* register this slot with the hotplug pci core */ 715 hotplug_slot->release = &release_slot; 716 hotplug_slot->private = slot; 717 snprintf(name, SLOT_NAME_SIZE, "%u", slot->number); 718 hotplug_slot->ops = &cpqphp_hotplug_slot_ops; 719 720 hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot); 721 hotplug_slot_info->attention_status = 722 cpq_get_attention_status(ctrl, slot); 723 hotplug_slot_info->latch_status = 724 cpq_get_latch_status(ctrl, slot); 725 hotplug_slot_info->adapter_status = 726 get_presence_status(ctrl, slot); 727 728 dbg("registering bus %d, dev %d, number %d, " 729 "ctrl->slot_device_offset %d, slot %d\n", 730 slot->bus, slot->device, 731 slot->number, ctrl->slot_device_offset, 732 slot_number); 733 result = pci_hp_register(hotplug_slot, 734 ctrl->pci_dev->bus, 735 slot->device, 736 name); 737 if (result) { 738 err("pci_hp_register failed with error %d\n", result); 739 goto error_info; 740 } 741 742 slot->next = ctrl->slot; 743 ctrl->slot = slot; 744 745 number_of_slots--; 746 slot_device++; 747 slot_number++; 748 } 749 750 return 0; 751 error_info: 752 kfree(hotplug_slot_info); 753 error_hpslot: 754 kfree(hotplug_slot); 755 error_slot: 756 kfree(slot); 757 error: 758 return result; 759 } 760 761 static int one_time_init(void) 762 { 763 int loop; 764 int retval = 0; 765 766 if (initialized) 767 return 0; 768 769 power_mode = 0; 770 771 retval = init_cpqhp_routing_table(); 772 if (retval) 773 goto error; 774 775 if (cpqhp_debug) 776 pci_print_IRQ_route(); 777 778 dbg("Initialize + Start the notification mechanism \n"); 779 780 retval = cpqhp_event_start_thread(); 781 if (retval) 782 goto error; 783 784 dbg("Initialize slot lists\n"); 785 for (loop = 0; loop < 256; loop++) 786 cpqhp_slot_list[loop] = NULL; 787 788 /* FIXME: We also need to hook the NMI handler eventually. 789 * this also needs to be worked with Christoph 790 * register_NMI_handler(); 791 */ 792 /* Map rom address */ 793 cpqhp_rom_start = ioremap(ROM_PHY_ADDR, ROM_PHY_LEN); 794 if (!cpqhp_rom_start) { 795 err ("Could not ioremap memory region for ROM\n"); 796 retval = -EIO; 797 goto error; 798 } 799 800 /* Now, map the int15 entry point if we are on compaq specific 801 * hardware 802 */ 803 compaq_nvram_init(cpqhp_rom_start); 804 805 /* Map smbios table entry point structure */ 806 smbios_table = detect_SMBIOS_pointer(cpqhp_rom_start, 807 cpqhp_rom_start + ROM_PHY_LEN); 808 if (!smbios_table) { 809 err ("Could not find the SMBIOS pointer in memory\n"); 810 retval = -EIO; 811 goto error_rom_start; 812 } 813 814 smbios_start = ioremap(readl(smbios_table + ST_ADDRESS), 815 readw(smbios_table + ST_LENGTH)); 816 if (!smbios_start) { 817 err ("Could not ioremap memory region taken from SMBIOS values\n"); 818 retval = -EIO; 819 goto error_smbios_start; 820 } 821 822 initialized = 1; 823 824 return retval; 825 826 error_smbios_start: 827 iounmap(smbios_start); 828 error_rom_start: 829 iounmap(cpqhp_rom_start); 830 error: 831 return retval; 832 } 833 834 static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 835 { 836 u8 num_of_slots = 0; 837 u8 hp_slot = 0; 838 u8 device; 839 u8 bus_cap; 840 u16 temp_word; 841 u16 vendor_id; 842 u16 subsystem_vid; 843 u16 subsystem_deviceid; 844 u32 rc; 845 struct controller *ctrl; 846 struct pci_func *func; 847 int err; 848 849 err = pci_enable_device(pdev); 850 if (err) { 851 printk(KERN_ERR MY_NAME ": cannot enable PCI device %s (%d)\n", 852 pci_name(pdev), err); 853 return err; 854 } 855 856 /* Need to read VID early b/c it's used to differentiate CPQ and INTC 857 * discovery 858 */ 859 rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id); 860 if (rc || ((vendor_id != PCI_VENDOR_ID_COMPAQ) && (vendor_id != PCI_VENDOR_ID_INTEL))) { 861 err(msg_HPC_non_compaq_or_intel); 862 rc = -ENODEV; 863 goto err_disable_device; 864 } 865 dbg("Vendor ID: %x\n", vendor_id); 866 867 dbg("revision: %d\n", pdev->revision); 868 if ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!pdev->revision)) { 869 err(msg_HPC_rev_error); 870 rc = -ENODEV; 871 goto err_disable_device; 872 } 873 874 /* Check for the proper subsytem ID's 875 * Intel uses a different SSID programming model than Compaq. 876 * For Intel, each SSID bit identifies a PHP capability. 877 * Also Intel HPC's may have RID=0. 878 */ 879 if ((pdev->revision <= 2) && (vendor_id != PCI_VENDOR_ID_INTEL)) { 880 err(msg_HPC_not_supported); 881 return -ENODEV; 882 } 883 884 /* TODO: This code can be made to support non-Compaq or Intel 885 * subsystem IDs 886 */ 887 rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid); 888 if (rc) { 889 err("%s : pci_read_config_word failed\n", __func__); 890 goto err_disable_device; 891 } 892 dbg("Subsystem Vendor ID: %x\n", subsystem_vid); 893 if ((subsystem_vid != PCI_VENDOR_ID_COMPAQ) && (subsystem_vid != PCI_VENDOR_ID_INTEL)) { 894 err(msg_HPC_non_compaq_or_intel); 895 rc = -ENODEV; 896 goto err_disable_device; 897 } 898 899 ctrl = kzalloc(sizeof(struct controller), GFP_KERNEL); 900 if (!ctrl) { 901 err("%s : out of memory\n", __func__); 902 rc = -ENOMEM; 903 goto err_disable_device; 904 } 905 906 rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsystem_deviceid); 907 if (rc) { 908 err("%s : pci_read_config_word failed\n", __func__); 909 goto err_free_ctrl; 910 } 911 912 info("Hot Plug Subsystem Device ID: %x\n", subsystem_deviceid); 913 914 /* Set Vendor ID, so it can be accessed later from other 915 * functions 916 */ 917 ctrl->vendor_id = vendor_id; 918 919 switch (subsystem_vid) { 920 case PCI_VENDOR_ID_COMPAQ: 921 if (pdev->revision >= 0x13) { /* CIOBX */ 922 ctrl->push_flag = 1; 923 ctrl->slot_switch_type = 1; 924 ctrl->push_button = 1; 925 ctrl->pci_config_space = 1; 926 ctrl->defeature_PHP = 1; 927 ctrl->pcix_support = 1; 928 ctrl->pcix_speed_capability = 1; 929 pci_read_config_byte(pdev, 0x41, &bus_cap); 930 if (bus_cap & 0x80) { 931 dbg("bus max supports 133MHz PCI-X\n"); 932 ctrl->speed_capability = PCI_SPEED_133MHz_PCIX; 933 break; 934 } 935 if (bus_cap & 0x40) { 936 dbg("bus max supports 100MHz PCI-X\n"); 937 ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; 938 break; 939 } 940 if (bus_cap & 20) { 941 dbg("bus max supports 66MHz PCI-X\n"); 942 ctrl->speed_capability = PCI_SPEED_66MHz_PCIX; 943 break; 944 } 945 if (bus_cap & 10) { 946 dbg("bus max supports 66MHz PCI\n"); 947 ctrl->speed_capability = PCI_SPEED_66MHz; 948 break; 949 } 950 951 break; 952 } 953 954 switch (subsystem_deviceid) { 955 case PCI_SUB_HPC_ID: 956 /* Original 6500/7000 implementation */ 957 ctrl->slot_switch_type = 1; 958 ctrl->speed_capability = PCI_SPEED_33MHz; 959 ctrl->push_button = 0; 960 ctrl->pci_config_space = 1; 961 ctrl->defeature_PHP = 1; 962 ctrl->pcix_support = 0; 963 ctrl->pcix_speed_capability = 0; 964 break; 965 case PCI_SUB_HPC_ID2: 966 /* First Pushbutton implementation */ 967 ctrl->push_flag = 1; 968 ctrl->slot_switch_type = 1; 969 ctrl->speed_capability = PCI_SPEED_33MHz; 970 ctrl->push_button = 1; 971 ctrl->pci_config_space = 1; 972 ctrl->defeature_PHP = 1; 973 ctrl->pcix_support = 0; 974 ctrl->pcix_speed_capability = 0; 975 break; 976 case PCI_SUB_HPC_ID_INTC: 977 /* Third party (6500/7000) */ 978 ctrl->slot_switch_type = 1; 979 ctrl->speed_capability = PCI_SPEED_33MHz; 980 ctrl->push_button = 0; 981 ctrl->pci_config_space = 1; 982 ctrl->defeature_PHP = 1; 983 ctrl->pcix_support = 0; 984 ctrl->pcix_speed_capability = 0; 985 break; 986 case PCI_SUB_HPC_ID3: 987 /* First 66 Mhz implementation */ 988 ctrl->push_flag = 1; 989 ctrl->slot_switch_type = 1; 990 ctrl->speed_capability = PCI_SPEED_66MHz; 991 ctrl->push_button = 1; 992 ctrl->pci_config_space = 1; 993 ctrl->defeature_PHP = 1; 994 ctrl->pcix_support = 0; 995 ctrl->pcix_speed_capability = 0; 996 break; 997 case PCI_SUB_HPC_ID4: 998 /* First PCI-X implementation, 100MHz */ 999 ctrl->push_flag = 1; 1000 ctrl->slot_switch_type = 1; 1001 ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; 1002 ctrl->push_button = 1; 1003 ctrl->pci_config_space = 1; 1004 ctrl->defeature_PHP = 1; 1005 ctrl->pcix_support = 1; 1006 ctrl->pcix_speed_capability = 0; 1007 break; 1008 default: 1009 err(msg_HPC_not_supported); 1010 rc = -ENODEV; 1011 goto err_free_ctrl; 1012 } 1013 break; 1014 1015 case PCI_VENDOR_ID_INTEL: 1016 /* Check for speed capability (0=33, 1=66) */ 1017 if (subsystem_deviceid & 0x0001) 1018 ctrl->speed_capability = PCI_SPEED_66MHz; 1019 else 1020 ctrl->speed_capability = PCI_SPEED_33MHz; 1021 1022 /* Check for push button */ 1023 if (subsystem_deviceid & 0x0002) 1024 ctrl->push_button = 0; 1025 else 1026 ctrl->push_button = 1; 1027 1028 /* Check for slot switch type (0=mechanical, 1=not mechanical) */ 1029 if (subsystem_deviceid & 0x0004) 1030 ctrl->slot_switch_type = 0; 1031 else 1032 ctrl->slot_switch_type = 1; 1033 1034 /* PHP Status (0=De-feature PHP, 1=Normal operation) */ 1035 if (subsystem_deviceid & 0x0008) 1036 ctrl->defeature_PHP = 1; /* PHP supported */ 1037 else 1038 ctrl->defeature_PHP = 0; /* PHP not supported */ 1039 1040 /* Alternate Base Address Register Interface 1041 * (0=not supported, 1=supported) 1042 */ 1043 if (subsystem_deviceid & 0x0010) 1044 ctrl->alternate_base_address = 1; 1045 else 1046 ctrl->alternate_base_address = 0; 1047 1048 /* PCI Config Space Index (0=not supported, 1=supported) */ 1049 if (subsystem_deviceid & 0x0020) 1050 ctrl->pci_config_space = 1; 1051 else 1052 ctrl->pci_config_space = 0; 1053 1054 /* PCI-X support */ 1055 if (subsystem_deviceid & 0x0080) { 1056 ctrl->pcix_support = 1; 1057 if (subsystem_deviceid & 0x0040) 1058 /* 133MHz PCI-X if bit 7 is 1 */ 1059 ctrl->pcix_speed_capability = 1; 1060 else 1061 /* 100MHz PCI-X if bit 7 is 1 and bit 0 is 0, */ 1062 /* 66MHz PCI-X if bit 7 is 1 and bit 0 is 1 */ 1063 ctrl->pcix_speed_capability = 0; 1064 } else { 1065 /* Conventional PCI */ 1066 ctrl->pcix_support = 0; 1067 ctrl->pcix_speed_capability = 0; 1068 } 1069 break; 1070 1071 default: 1072 err(msg_HPC_not_supported); 1073 rc = -ENODEV; 1074 goto err_free_ctrl; 1075 } 1076 1077 /* Tell the user that we found one. */ 1078 info("Initializing the PCI hot plug controller residing on PCI bus %d\n", 1079 pdev->bus->number); 1080 1081 dbg("Hotplug controller capabilities:\n"); 1082 dbg(" speed_capability %d\n", ctrl->speed_capability); 1083 dbg(" slot_switch_type %s\n", ctrl->slot_switch_type ? 1084 "switch present" : "no switch"); 1085 dbg(" defeature_PHP %s\n", ctrl->defeature_PHP ? 1086 "PHP supported" : "PHP not supported"); 1087 dbg(" alternate_base_address %s\n", ctrl->alternate_base_address ? 1088 "supported" : "not supported"); 1089 dbg(" pci_config_space %s\n", ctrl->pci_config_space ? 1090 "supported" : "not supported"); 1091 dbg(" pcix_speed_capability %s\n", ctrl->pcix_speed_capability ? 1092 "supported" : "not supported"); 1093 dbg(" pcix_support %s\n", ctrl->pcix_support ? 1094 "supported" : "not supported"); 1095 1096 ctrl->pci_dev = pdev; 1097 pci_set_drvdata(pdev, ctrl); 1098 1099 /* make our own copy of the pci bus structure, 1100 * as we like tweaking it a lot */ 1101 ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); 1102 if (!ctrl->pci_bus) { 1103 err("out of memory\n"); 1104 rc = -ENOMEM; 1105 goto err_free_ctrl; 1106 } 1107 memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus)); 1108 1109 ctrl->bus = pdev->bus->number; 1110 ctrl->rev = pdev->revision; 1111 dbg("bus device function rev: %d %d %d %d\n", ctrl->bus, 1112 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev); 1113 1114 mutex_init(&ctrl->crit_sect); 1115 init_waitqueue_head(&ctrl->queue); 1116 1117 /* initialize our threads if they haven't already been started up */ 1118 rc = one_time_init(); 1119 if (rc) { 1120 goto err_free_bus; 1121 } 1122 1123 dbg("pdev = %p\n", pdev); 1124 dbg("pci resource start %llx\n", (unsigned long long)pci_resource_start(pdev, 0)); 1125 dbg("pci resource len %llx\n", (unsigned long long)pci_resource_len(pdev, 0)); 1126 1127 if (!request_mem_region(pci_resource_start(pdev, 0), 1128 pci_resource_len(pdev, 0), MY_NAME)) { 1129 err("cannot reserve MMIO region\n"); 1130 rc = -ENOMEM; 1131 goto err_free_bus; 1132 } 1133 1134 ctrl->hpc_reg = ioremap(pci_resource_start(pdev, 0), 1135 pci_resource_len(pdev, 0)); 1136 if (!ctrl->hpc_reg) { 1137 err("cannot remap MMIO region %llx @ %llx\n", 1138 (unsigned long long)pci_resource_len(pdev, 0), 1139 (unsigned long long)pci_resource_start(pdev, 0)); 1140 rc = -ENODEV; 1141 goto err_free_mem_region; 1142 } 1143 1144 /* Check for 66Mhz operation */ 1145 ctrl->speed = get_controller_speed(ctrl); 1146 1147 1148 /******************************************************** 1149 * 1150 * Save configuration headers for this and 1151 * subordinate PCI buses 1152 * 1153 ********************************************************/ 1154 1155 /* find the physical slot number of the first hot plug slot */ 1156 1157 /* Get slot won't work for devices behind bridges, but 1158 * in this case it will always be called for the "base" 1159 * bus/dev/func of a slot. 1160 * CS: this is leveraging the PCIIRQ routing code from the kernel 1161 * (pci-pc.c: get_irq_routing_table) */ 1162 rc = get_slot_mapping(ctrl->pci_bus, pdev->bus->number, 1163 (readb(ctrl->hpc_reg + SLOT_MASK) >> 4), 1164 &(ctrl->first_slot)); 1165 dbg("get_slot_mapping: first_slot = %d, returned = %d\n", 1166 ctrl->first_slot, rc); 1167 if (rc) { 1168 err(msg_initialization_err, rc); 1169 goto err_iounmap; 1170 } 1171 1172 /* Store PCI Config Space for all devices on this bus */ 1173 rc = cpqhp_save_config(ctrl, ctrl->bus, readb(ctrl->hpc_reg + SLOT_MASK)); 1174 if (rc) { 1175 err("%s: unable to save PCI configuration data, error %d\n", 1176 __func__, rc); 1177 goto err_iounmap; 1178 } 1179 1180 /* 1181 * Get IO, memory, and IRQ resources for new devices 1182 */ 1183 /* The next line is required for cpqhp_find_available_resources */ 1184 ctrl->interrupt = pdev->irq; 1185 if (ctrl->interrupt < 0x10) { 1186 cpqhp_legacy_mode = 1; 1187 dbg("System seems to be configured for Full Table Mapped MPS mode\n"); 1188 } 1189 1190 ctrl->cfgspc_irq = 0; 1191 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &ctrl->cfgspc_irq); 1192 1193 rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start); 1194 ctrl->add_support = !rc; 1195 if (rc) { 1196 dbg("cpqhp_find_available_resources = 0x%x\n", rc); 1197 err("unable to locate PCI configuration resources for hot plug add.\n"); 1198 goto err_iounmap; 1199 } 1200 1201 /* 1202 * Finish setting up the hot plug ctrl device 1203 */ 1204 ctrl->slot_device_offset = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; 1205 dbg("NumSlots %d \n", ctrl->slot_device_offset); 1206 1207 ctrl->next_event = 0; 1208 1209 /* Setup the slot information structures */ 1210 rc = ctrl_slot_setup(ctrl, smbios_start, smbios_table); 1211 if (rc) { 1212 err(msg_initialization_err, 6); 1213 err("%s: unable to save PCI configuration data, error %d\n", 1214 __func__, rc); 1215 goto err_iounmap; 1216 } 1217 1218 /* Mask all general input interrupts */ 1219 writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_MASK); 1220 1221 /* set up the interrupt */ 1222 dbg("HPC interrupt = %d \n", ctrl->interrupt); 1223 if (request_irq(ctrl->interrupt, cpqhp_ctrl_intr, 1224 IRQF_SHARED, MY_NAME, ctrl)) { 1225 err("Can't get irq %d for the hotplug pci controller\n", 1226 ctrl->interrupt); 1227 rc = -ENODEV; 1228 goto err_iounmap; 1229 } 1230 1231 /* Enable Shift Out interrupt and clear it, also enable SERR on power 1232 * fault 1233 */ 1234 temp_word = readw(ctrl->hpc_reg + MISC); 1235 temp_word |= 0x4006; 1236 writew(temp_word, ctrl->hpc_reg + MISC); 1237 1238 /* Changed 05/05/97 to clear all interrupts at start */ 1239 writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_INPUT_CLEAR); 1240 1241 ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); 1242 1243 writel(0x0L, ctrl->hpc_reg + INT_MASK); 1244 1245 if (!cpqhp_ctrl_list) { 1246 cpqhp_ctrl_list = ctrl; 1247 ctrl->next = NULL; 1248 } else { 1249 ctrl->next = cpqhp_ctrl_list; 1250 cpqhp_ctrl_list = ctrl; 1251 } 1252 1253 /* turn off empty slots here unless command line option "ON" set 1254 * Wait for exclusive access to hardware 1255 */ 1256 mutex_lock(&ctrl->crit_sect); 1257 1258 num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; 1259 1260 /* find first device number for the ctrl */ 1261 device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; 1262 1263 while (num_of_slots) { 1264 dbg("num_of_slots: %d\n", num_of_slots); 1265 func = cpqhp_slot_find(ctrl->bus, device, 0); 1266 if (!func) 1267 break; 1268 1269 hp_slot = func->device - ctrl->slot_device_offset; 1270 dbg("hp_slot: %d\n", hp_slot); 1271 1272 /* We have to save the presence info for these slots */ 1273 temp_word = ctrl->ctrl_int_comp >> 16; 1274 func->presence_save = (temp_word >> hp_slot) & 0x01; 1275 func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; 1276 1277 if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) 1278 func->switch_save = 0; 1279 else 1280 func->switch_save = 0x10; 1281 1282 if (!power_mode) 1283 if (!func->is_a_board) { 1284 green_LED_off(ctrl, hp_slot); 1285 slot_disable(ctrl, hp_slot); 1286 } 1287 1288 device++; 1289 num_of_slots--; 1290 } 1291 1292 if (!power_mode) { 1293 set_SOGO(ctrl); 1294 /* Wait for SOBS to be unset */ 1295 wait_for_ctrl_irq(ctrl); 1296 } 1297 1298 rc = init_SERR(ctrl); 1299 if (rc) { 1300 err("init_SERR failed\n"); 1301 mutex_unlock(&ctrl->crit_sect); 1302 goto err_free_irq; 1303 } 1304 1305 /* Done with exclusive hardware access */ 1306 mutex_unlock(&ctrl->crit_sect); 1307 1308 cpqhp_create_debugfs_files(ctrl); 1309 1310 return 0; 1311 1312 err_free_irq: 1313 free_irq(ctrl->interrupt, ctrl); 1314 err_iounmap: 1315 iounmap(ctrl->hpc_reg); 1316 err_free_mem_region: 1317 release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 1318 err_free_bus: 1319 kfree(ctrl->pci_bus); 1320 err_free_ctrl: 1321 kfree(ctrl); 1322 err_disable_device: 1323 pci_disable_device(pdev); 1324 return rc; 1325 } 1326 1327 static void __exit unload_cpqphpd(void) 1328 { 1329 struct pci_func *next; 1330 struct pci_func *TempSlot; 1331 int loop; 1332 u32 rc; 1333 struct controller *ctrl; 1334 struct controller *tctrl; 1335 struct pci_resource *res; 1336 struct pci_resource *tres; 1337 1338 rc = compaq_nvram_store(cpqhp_rom_start); 1339 1340 ctrl = cpqhp_ctrl_list; 1341 1342 while (ctrl) { 1343 if (ctrl->hpc_reg) { 1344 u16 misc; 1345 rc = read_slot_enable (ctrl); 1346 1347 writeb(0, ctrl->hpc_reg + SLOT_SERR); 1348 writel(0xFFFFFFC0L | ~rc, ctrl->hpc_reg + INT_MASK); 1349 1350 misc = readw(ctrl->hpc_reg + MISC); 1351 misc &= 0xFFFD; 1352 writew(misc, ctrl->hpc_reg + MISC); 1353 } 1354 1355 ctrl_slot_cleanup(ctrl); 1356 1357 res = ctrl->io_head; 1358 while (res) { 1359 tres = res; 1360 res = res->next; 1361 kfree(tres); 1362 } 1363 1364 res = ctrl->mem_head; 1365 while (res) { 1366 tres = res; 1367 res = res->next; 1368 kfree(tres); 1369 } 1370 1371 res = ctrl->p_mem_head; 1372 while (res) { 1373 tres = res; 1374 res = res->next; 1375 kfree(tres); 1376 } 1377 1378 res = ctrl->bus_head; 1379 while (res) { 1380 tres = res; 1381 res = res->next; 1382 kfree(tres); 1383 } 1384 1385 kfree (ctrl->pci_bus); 1386 1387 tctrl = ctrl; 1388 ctrl = ctrl->next; 1389 kfree(tctrl); 1390 } 1391 1392 for (loop = 0; loop < 256; loop++) { 1393 next = cpqhp_slot_list[loop]; 1394 while (next != NULL) { 1395 res = next->io_head; 1396 while (res) { 1397 tres = res; 1398 res = res->next; 1399 kfree(tres); 1400 } 1401 1402 res = next->mem_head; 1403 while (res) { 1404 tres = res; 1405 res = res->next; 1406 kfree(tres); 1407 } 1408 1409 res = next->p_mem_head; 1410 while (res) { 1411 tres = res; 1412 res = res->next; 1413 kfree(tres); 1414 } 1415 1416 res = next->bus_head; 1417 while (res) { 1418 tres = res; 1419 res = res->next; 1420 kfree(tres); 1421 } 1422 1423 TempSlot = next; 1424 next = next->next; 1425 kfree(TempSlot); 1426 } 1427 } 1428 1429 /* Stop the notification mechanism */ 1430 if (initialized) 1431 cpqhp_event_stop_thread(); 1432 1433 /* unmap the rom address */ 1434 if (cpqhp_rom_start) 1435 iounmap(cpqhp_rom_start); 1436 if (smbios_start) 1437 iounmap(smbios_start); 1438 } 1439 1440 static struct pci_device_id hpcd_pci_tbl[] = { 1441 { 1442 /* handle any PCI Hotplug controller */ 1443 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), 1444 .class_mask = ~0, 1445 1446 /* no matter who makes it */ 1447 .vendor = PCI_ANY_ID, 1448 .device = PCI_ANY_ID, 1449 .subvendor = PCI_ANY_ID, 1450 .subdevice = PCI_ANY_ID, 1451 1452 }, { /* end: all zeroes */ } 1453 }; 1454 1455 MODULE_DEVICE_TABLE(pci, hpcd_pci_tbl); 1456 1457 static struct pci_driver cpqhpc_driver = { 1458 .name = "compaq_pci_hotplug", 1459 .id_table = hpcd_pci_tbl, 1460 .probe = cpqhpc_probe, 1461 /* remove: cpqhpc_remove_one, */ 1462 }; 1463 1464 static int __init cpqhpc_init(void) 1465 { 1466 int result; 1467 1468 cpqhp_debug = debug; 1469 1470 info (DRIVER_DESC " version: " DRIVER_VERSION "\n"); 1471 cpqhp_initialize_debugfs(); 1472 result = pci_register_driver(&cpqhpc_driver); 1473 dbg("pci_register_driver = %d\n", result); 1474 return result; 1475 } 1476 1477 static void __exit cpqhpc_cleanup(void) 1478 { 1479 dbg("unload_cpqphpd()\n"); 1480 unload_cpqphpd(); 1481 1482 dbg("pci_unregister_driver\n"); 1483 pci_unregister_driver(&cpqhpc_driver); 1484 cpqhp_shutdown_debugfs(); 1485 } 1486 1487 module_init(cpqhpc_init); 1488 module_exit(cpqhpc_cleanup); 1489