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 32 #include <linux/config.h> 33 #include <linux/module.h> 34 #include <linux/moduleparam.h> 35 #include <linux/kernel.h> 36 #include <linux/types.h> 37 #include <linux/proc_fs.h> 38 #include <linux/slab.h> 39 #include <linux/workqueue.h> 40 #include <linux/pci.h> 41 #include <linux/init.h> 42 #include <linux/interrupt.h> 43 44 #include <asm/uaccess.h> 45 46 #include "cpqphp.h" 47 #include "cpqphp_nvram.h" 48 #include "../../../arch/i386/pci/pci.h" /* horrible hack showing how processor dependent we are... */ 49 50 51 /* Global variables */ 52 int cpqhp_debug; 53 int cpqhp_legacy_mode; 54 struct controller *cpqhp_ctrl_list; /* = NULL */ 55 struct pci_func *cpqhp_slot_list[256]; 56 57 /* local variables */ 58 static void __iomem *smbios_table; 59 static void __iomem *smbios_start; 60 static void __iomem *cpqhp_rom_start; 61 static int power_mode; 62 static int debug; 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 int one_time_init (void); 81 static int set_attention_status (struct hotplug_slot *slot, u8 value); 82 static int process_SI (struct hotplug_slot *slot); 83 static int process_SS (struct hotplug_slot *slot); 84 static int hardware_test (struct hotplug_slot *slot, u32 value); 85 static int get_power_status (struct hotplug_slot *slot, u8 *value); 86 static int get_attention_status (struct hotplug_slot *slot, u8 *value); 87 static int get_latch_status (struct hotplug_slot *slot, u8 *value); 88 static int get_adapter_status (struct hotplug_slot *slot, u8 *value); 89 static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); 90 static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); 91 92 static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = { 93 .owner = THIS_MODULE, 94 .set_attention_status = set_attention_status, 95 .enable_slot = process_SI, 96 .disable_slot = process_SS, 97 .hardware_test = hardware_test, 98 .get_power_status = get_power_status, 99 .get_attention_status = get_attention_status, 100 .get_latch_status = get_latch_status, 101 .get_adapter_status = get_adapter_status, 102 .get_max_bus_speed = get_max_bus_speed, 103 .get_cur_bus_speed = get_cur_bus_speed, 104 }; 105 106 107 static inline int is_slot64bit(struct slot *slot) 108 { 109 return (readb(slot->p_sm_slot + SMBIOS_SLOT_WIDTH) == 0x06) ? 1 : 0; 110 } 111 112 static inline int is_slot66mhz(struct slot *slot) 113 { 114 return (readb(slot->p_sm_slot + SMBIOS_SLOT_TYPE) == 0x0E) ? 1 : 0; 115 } 116 117 /** 118 * detect_SMBIOS_pointer - find the System Management BIOS Table in mem region. 119 * 120 * @begin: begin pointer for region to be scanned. 121 * @end: end pointer for region to be scanned. 122 * 123 * Returns pointer to the head of the SMBIOS tables (or NULL) 124 * 125 */ 126 static void __iomem * detect_SMBIOS_pointer(void __iomem *begin, void __iomem *end) 127 { 128 void __iomem *fp; 129 void __iomem *endp; 130 u8 temp1, temp2, temp3, temp4; 131 int status = 0; 132 133 endp = (end - sizeof(u32) + 1); 134 135 for (fp = begin; fp <= endp; fp += 16) { 136 temp1 = readb(fp); 137 temp2 = readb(fp+1); 138 temp3 = readb(fp+2); 139 temp4 = readb(fp+3); 140 if (temp1 == '_' && 141 temp2 == 'S' && 142 temp3 == 'M' && 143 temp4 == '_') { 144 status = 1; 145 break; 146 } 147 } 148 149 if (!status) 150 fp = NULL; 151 152 dbg("Discovered SMBIOS Entry point at %p\n", fp); 153 154 return fp; 155 } 156 157 /** 158 * init_SERR - Initializes the per slot SERR generation. 159 * 160 * For unexpected switch opens 161 * 162 */ 163 static int init_SERR(struct controller * ctrl) 164 { 165 u32 tempdword; 166 u32 number_of_slots; 167 u8 physical_slot; 168 169 if (!ctrl) 170 return 1; 171 172 tempdword = ctrl->first_slot; 173 174 number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; 175 // Loop through slots 176 while (number_of_slots) { 177 physical_slot = tempdword; 178 writeb(0, ctrl->hpc_reg + SLOT_SERR); 179 tempdword++; 180 number_of_slots--; 181 } 182 183 return 0; 184 } 185 186 187 /* nice debugging output */ 188 static int pci_print_IRQ_route (void) 189 { 190 struct irq_routing_table *routing_table; 191 int len; 192 int loop; 193 194 u8 tbus, tdevice, tslot; 195 196 routing_table = pcibios_get_irq_routing_table(); 197 if (routing_table == NULL) { 198 err("No BIOS Routing Table??? Not good\n"); 199 return -ENOMEM; 200 } 201 202 len = (routing_table->size - sizeof(struct irq_routing_table)) / 203 sizeof(struct irq_info); 204 // Make sure I got at least one entry 205 if (len == 0) { 206 kfree(routing_table); 207 return -1; 208 } 209 210 dbg("bus dev func slot\n"); 211 212 for (loop = 0; loop < len; ++loop) { 213 tbus = routing_table->slots[loop].bus; 214 tdevice = routing_table->slots[loop].devfn; 215 tslot = routing_table->slots[loop].slot; 216 dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot); 217 218 } 219 kfree(routing_table); 220 return 0; 221 } 222 223 224 /** 225 * get_subsequent_smbios_entry: get the next entry from bios table. 226 * 227 * Gets the first entry if previous == NULL 228 * Otherwise, returns the next entry 229 * Uses global SMBIOS Table pointer 230 * 231 * @curr: %NULL or pointer to previously returned structure 232 * 233 * returns a pointer to an SMBIOS structure or NULL if none found 234 */ 235 static void __iomem *get_subsequent_smbios_entry(void __iomem *smbios_start, 236 void __iomem *smbios_table, 237 void __iomem *curr) 238 { 239 u8 bail = 0; 240 u8 previous_byte = 1; 241 void __iomem *p_temp; 242 void __iomem *p_max; 243 244 if (!smbios_table || !curr) 245 return(NULL); 246 247 // set p_max to the end of the table 248 p_max = smbios_start + readw(smbios_table + ST_LENGTH); 249 250 p_temp = curr; 251 p_temp += readb(curr + SMBIOS_GENERIC_LENGTH); 252 253 while ((p_temp < p_max) && !bail) { 254 /* Look for the double NULL terminator 255 * The first condition is the previous byte 256 * and the second is the curr */ 257 if (!previous_byte && !(readb(p_temp))) { 258 bail = 1; 259 } 260 261 previous_byte = readb(p_temp); 262 p_temp++; 263 } 264 265 if (p_temp < p_max) { 266 return p_temp; 267 } else { 268 return NULL; 269 } 270 } 271 272 273 /** 274 * get_SMBIOS_entry 275 * 276 * @type:SMBIOS structure type to be returned 277 * @previous: %NULL or pointer to previously returned structure 278 * 279 * Gets the first entry of the specified type if previous == NULL 280 * Otherwise, returns the next entry of the given type. 281 * Uses global SMBIOS Table pointer 282 * Uses get_subsequent_smbios_entry 283 * 284 * returns a pointer to an SMBIOS structure or %NULL if none found 285 */ 286 static void __iomem *get_SMBIOS_entry(void __iomem *smbios_start, 287 void __iomem *smbios_table, 288 u8 type, 289 void __iomem *previous) 290 { 291 if (!smbios_table) 292 return NULL; 293 294 if (!previous) { 295 previous = smbios_start; 296 } else { 297 previous = get_subsequent_smbios_entry(smbios_start, 298 smbios_table, previous); 299 } 300 301 while (previous) { 302 if (readb(previous + SMBIOS_GENERIC_TYPE) != type) { 303 previous = get_subsequent_smbios_entry(smbios_start, 304 smbios_table, previous); 305 } else { 306 break; 307 } 308 } 309 310 return previous; 311 } 312 313 static void release_slot(struct hotplug_slot *hotplug_slot) 314 { 315 struct slot *slot = hotplug_slot->private; 316 317 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 318 319 kfree(slot->hotplug_slot->info); 320 kfree(slot->hotplug_slot->name); 321 kfree(slot->hotplug_slot); 322 kfree(slot); 323 } 324 325 static int ctrl_slot_setup(struct controller *ctrl, 326 void __iomem *smbios_start, 327 void __iomem *smbios_table) 328 { 329 struct slot *new_slot; 330 u8 number_of_slots; 331 u8 slot_device; 332 u8 slot_number; 333 u8 ctrl_slot; 334 u32 tempdword; 335 void __iomem *slot_entry= NULL; 336 int result = -ENOMEM; 337 338 dbg("%s\n", __FUNCTION__); 339 340 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); 341 342 number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; 343 slot_device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; 344 slot_number = ctrl->first_slot; 345 346 while (number_of_slots) { 347 new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL); 348 if (!new_slot) 349 goto error; 350 351 memset(new_slot, 0, sizeof(struct slot)); 352 new_slot->hotplug_slot = kmalloc(sizeof(*(new_slot->hotplug_slot)), 353 GFP_KERNEL); 354 if (!new_slot->hotplug_slot) 355 goto error_slot; 356 memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot)); 357 358 new_slot->hotplug_slot->info = 359 kmalloc(sizeof(*(new_slot->hotplug_slot->info)), 360 GFP_KERNEL); 361 if (!new_slot->hotplug_slot->info) 362 goto error_hpslot; 363 memset(new_slot->hotplug_slot->info, 0, 364 sizeof(struct hotplug_slot_info)); 365 new_slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL); 366 if (!new_slot->hotplug_slot->name) 367 goto error_info; 368 369 new_slot->ctrl = ctrl; 370 new_slot->bus = ctrl->bus; 371 new_slot->device = slot_device; 372 new_slot->number = slot_number; 373 dbg("slot->number = %d\n",new_slot->number); 374 375 slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9, 376 slot_entry); 377 378 while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != new_slot->number)) { 379 slot_entry = get_SMBIOS_entry(smbios_start, 380 smbios_table, 9, slot_entry); 381 } 382 383 new_slot->p_sm_slot = slot_entry; 384 385 init_timer(&new_slot->task_event); 386 new_slot->task_event.expires = jiffies + 5 * HZ; 387 new_slot->task_event.function = cpqhp_pushbutton_thread; 388 389 //FIXME: these capabilities aren't used but if they are 390 // they need to be correctly implemented 391 new_slot->capabilities |= PCISLOT_REPLACE_SUPPORTED; 392 new_slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED; 393 394 if (is_slot64bit(new_slot)) 395 new_slot->capabilities |= PCISLOT_64_BIT_SUPPORTED; 396 if (is_slot66mhz(new_slot)) 397 new_slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED; 398 if (ctrl->speed == PCI_SPEED_66MHz) 399 new_slot->capabilities |= PCISLOT_66_MHZ_OPERATION; 400 401 ctrl_slot = slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4); 402 403 // Check presence 404 new_slot->capabilities |= ((((~tempdword) >> 23) | ((~tempdword) >> 15)) >> ctrl_slot) & 0x02; 405 // Check the switch state 406 new_slot->capabilities |= ((~tempdword & 0xFF) >> ctrl_slot) & 0x01; 407 // Check the slot enable 408 new_slot->capabilities |= ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04; 409 410 /* register this slot with the hotplug pci core */ 411 new_slot->hotplug_slot->release = &release_slot; 412 new_slot->hotplug_slot->private = new_slot; 413 make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot); 414 new_slot->hotplug_slot->ops = &cpqphp_hotplug_slot_ops; 415 416 new_slot->hotplug_slot->info->power_status = get_slot_enabled(ctrl, new_slot); 417 new_slot->hotplug_slot->info->attention_status = cpq_get_attention_status(ctrl, new_slot); 418 new_slot->hotplug_slot->info->latch_status = cpq_get_latch_status(ctrl, new_slot); 419 new_slot->hotplug_slot->info->adapter_status = get_presence_status(ctrl, new_slot); 420 421 dbg ("registering bus %d, dev %d, number %d, " 422 "ctrl->slot_device_offset %d, slot %d\n", 423 new_slot->bus, new_slot->device, 424 new_slot->number, ctrl->slot_device_offset, 425 slot_number); 426 result = pci_hp_register (new_slot->hotplug_slot); 427 if (result) { 428 err ("pci_hp_register failed with error %d\n", result); 429 goto error_name; 430 } 431 432 new_slot->next = ctrl->slot; 433 ctrl->slot = new_slot; 434 435 number_of_slots--; 436 slot_device++; 437 slot_number++; 438 } 439 440 return 0; 441 442 error_name: 443 kfree(new_slot->hotplug_slot->name); 444 error_info: 445 kfree(new_slot->hotplug_slot->info); 446 error_hpslot: 447 kfree(new_slot->hotplug_slot); 448 error_slot: 449 kfree(new_slot); 450 error: 451 return result; 452 } 453 454 static int ctrl_slot_cleanup (struct controller * ctrl) 455 { 456 struct slot *old_slot, *next_slot; 457 458 old_slot = ctrl->slot; 459 ctrl->slot = NULL; 460 461 while (old_slot) { 462 /* memory will be freed by the release_slot callback */ 463 next_slot = old_slot->next; 464 pci_hp_deregister (old_slot->hotplug_slot); 465 old_slot = next_slot; 466 } 467 468 //Free IRQ associated with hot plug device 469 free_irq(ctrl->interrupt, ctrl); 470 //Unmap the memory 471 iounmap(ctrl->hpc_reg); 472 //Finally reclaim PCI mem 473 release_mem_region(pci_resource_start(ctrl->pci_dev, 0), 474 pci_resource_len(ctrl->pci_dev, 0)); 475 476 return(0); 477 } 478 479 480 //============================================================================ 481 // function: get_slot_mapping 482 // 483 // Description: Attempts to determine a logical slot mapping for a PCI 484 // device. Won't work for more than one PCI-PCI bridge 485 // in a slot. 486 // 487 // Input: u8 bus_num - bus number of PCI device 488 // u8 dev_num - device number of PCI device 489 // u8 *slot - Pointer to u8 where slot number will 490 // be returned 491 // 492 // Output: SUCCESS or FAILURE 493 //============================================================================= 494 static int 495 get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot) 496 { 497 struct irq_routing_table *PCIIRQRoutingInfoLength; 498 u32 work; 499 long len; 500 long loop; 501 502 u8 tbus, tdevice, tslot, bridgeSlot; 503 504 dbg("%s: %p, %d, %d, %p\n", __FUNCTION__, bus, bus_num, dev_num, slot); 505 506 bridgeSlot = 0xFF; 507 508 PCIIRQRoutingInfoLength = pcibios_get_irq_routing_table(); 509 if (!PCIIRQRoutingInfoLength) 510 return -1; 511 512 len = (PCIIRQRoutingInfoLength->size - 513 sizeof(struct irq_routing_table)) / sizeof(struct irq_info); 514 // Make sure I got at least one entry 515 if (len == 0) { 516 kfree(PCIIRQRoutingInfoLength); 517 return -1; 518 } 519 520 for (loop = 0; loop < len; ++loop) { 521 tbus = PCIIRQRoutingInfoLength->slots[loop].bus; 522 tdevice = PCIIRQRoutingInfoLength->slots[loop].devfn >> 3; 523 tslot = PCIIRQRoutingInfoLength->slots[loop].slot; 524 525 if ((tbus == bus_num) && (tdevice == dev_num)) { 526 *slot = tslot; 527 kfree(PCIIRQRoutingInfoLength); 528 return 0; 529 } else { 530 /* Did not get a match on the target PCI device. Check 531 * if the current IRQ table entry is a PCI-to-PCI bridge 532 * device. If so, and it's secondary bus matches the 533 * bus number for the target device, I need to save the 534 * bridge's slot number. If I can not find an entry for 535 * the target device, I will have to assume it's on the 536 * other side of the bridge, and assign it the bridge's 537 * slot. */ 538 bus->number = tbus; 539 pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0), 540 PCI_REVISION_ID, &work); 541 542 if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) { 543 pci_bus_read_config_dword(bus, 544 PCI_DEVFN(tdevice, 0), 545 PCI_PRIMARY_BUS, &work); 546 // See if bridge's secondary bus matches target bus. 547 if (((work >> 8) & 0x000000FF) == (long) bus_num) { 548 bridgeSlot = tslot; 549 } 550 } 551 } 552 553 } 554 555 // If we got here, we didn't find an entry in the IRQ mapping table 556 // for the target PCI device. If we did determine that the target 557 // device is on the other side of a PCI-to-PCI bridge, return the 558 // slot number for the bridge. 559 if (bridgeSlot != 0xFF) { 560 *slot = bridgeSlot; 561 kfree(PCIIRQRoutingInfoLength); 562 return 0; 563 } 564 kfree(PCIIRQRoutingInfoLength); 565 // Couldn't find an entry in the routing table for this PCI device 566 return -1; 567 } 568 569 570 /** 571 * cpqhp_set_attention_status - Turns the Amber LED for a slot on or off 572 * 573 */ 574 static int 575 cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func, 576 u32 status) 577 { 578 u8 hp_slot; 579 580 if (func == NULL) 581 return(1); 582 583 hp_slot = func->device - ctrl->slot_device_offset; 584 585 // Wait for exclusive access to hardware 586 down(&ctrl->crit_sect); 587 588 if (status == 1) { 589 amber_LED_on (ctrl, hp_slot); 590 } else if (status == 0) { 591 amber_LED_off (ctrl, hp_slot); 592 } else { 593 // Done with exclusive hardware access 594 up(&ctrl->crit_sect); 595 return(1); 596 } 597 598 set_SOGO(ctrl); 599 600 // Wait for SOBS to be unset 601 wait_for_ctrl_irq (ctrl); 602 603 // Done with exclusive hardware access 604 up(&ctrl->crit_sect); 605 606 return(0); 607 } 608 609 610 /** 611 * set_attention_status - Turns the Amber LED for a slot on or off 612 * 613 */ 614 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) 615 { 616 struct pci_func *slot_func; 617 struct slot *slot = hotplug_slot->private; 618 struct controller *ctrl = slot->ctrl; 619 u8 bus; 620 u8 devfn; 621 u8 device; 622 u8 function; 623 624 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 625 626 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) 627 return -ENODEV; 628 629 device = devfn >> 3; 630 function = devfn & 0x7; 631 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); 632 633 slot_func = cpqhp_slot_find(bus, device, function); 634 if (!slot_func) 635 return -ENODEV; 636 637 return cpqhp_set_attention_status(ctrl, slot_func, status); 638 } 639 640 641 static int process_SI(struct hotplug_slot *hotplug_slot) 642 { 643 struct pci_func *slot_func; 644 struct slot *slot = hotplug_slot->private; 645 struct controller *ctrl = slot->ctrl; 646 u8 bus; 647 u8 devfn; 648 u8 device; 649 u8 function; 650 651 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 652 653 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) 654 return -ENODEV; 655 656 device = devfn >> 3; 657 function = devfn & 0x7; 658 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); 659 660 slot_func = cpqhp_slot_find(bus, device, function); 661 if (!slot_func) 662 return -ENODEV; 663 664 slot_func->bus = bus; 665 slot_func->device = device; 666 slot_func->function = function; 667 slot_func->configured = 0; 668 dbg("board_added(%p, %p)\n", slot_func, ctrl); 669 return cpqhp_process_SI(ctrl, slot_func); 670 } 671 672 673 static int process_SS(struct hotplug_slot *hotplug_slot) 674 { 675 struct pci_func *slot_func; 676 struct slot *slot = hotplug_slot->private; 677 struct controller *ctrl = slot->ctrl; 678 u8 bus; 679 u8 devfn; 680 u8 device; 681 u8 function; 682 683 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 684 685 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) 686 return -ENODEV; 687 688 device = devfn >> 3; 689 function = devfn & 0x7; 690 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); 691 692 slot_func = cpqhp_slot_find(bus, device, function); 693 if (!slot_func) 694 return -ENODEV; 695 696 dbg("In %s, slot_func = %p, ctrl = %p\n", __FUNCTION__, slot_func, ctrl); 697 return cpqhp_process_SS(ctrl, slot_func); 698 } 699 700 701 static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value) 702 { 703 struct slot *slot = hotplug_slot->private; 704 struct controller *ctrl = slot->ctrl; 705 706 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 707 708 return cpqhp_hardware_test(ctrl, value); 709 } 710 711 712 static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) 713 { 714 struct slot *slot = hotplug_slot->private; 715 struct controller *ctrl = slot->ctrl; 716 717 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 718 719 *value = get_slot_enabled(ctrl, slot); 720 return 0; 721 } 722 723 static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) 724 { 725 struct slot *slot = hotplug_slot->private; 726 struct controller *ctrl = slot->ctrl; 727 728 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 729 730 *value = cpq_get_attention_status(ctrl, slot); 731 return 0; 732 } 733 734 static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) 735 { 736 struct slot *slot = hotplug_slot->private; 737 struct controller *ctrl = slot->ctrl; 738 739 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 740 741 *value = cpq_get_latch_status(ctrl, slot); 742 743 return 0; 744 } 745 746 static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) 747 { 748 struct slot *slot = hotplug_slot->private; 749 struct controller *ctrl = slot->ctrl; 750 751 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 752 753 *value = get_presence_status(ctrl, slot); 754 755 return 0; 756 } 757 758 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) 759 { 760 struct slot *slot = hotplug_slot->private; 761 struct controller *ctrl = slot->ctrl; 762 763 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 764 765 *value = ctrl->speed_capability; 766 767 return 0; 768 } 769 770 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) 771 { 772 struct slot *slot = hotplug_slot->private; 773 struct controller *ctrl = slot->ctrl; 774 775 dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); 776 777 *value = ctrl->speed; 778 779 return 0; 780 } 781 782 static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 783 { 784 u8 num_of_slots = 0; 785 u8 hp_slot = 0; 786 u8 device; 787 u8 rev; 788 u8 bus_cap; 789 u16 temp_word; 790 u16 vendor_id; 791 u16 subsystem_vid; 792 u16 subsystem_deviceid; 793 u32 rc; 794 struct controller *ctrl; 795 struct pci_func *func; 796 797 // Need to read VID early b/c it's used to differentiate CPQ and INTC discovery 798 rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id); 799 if (rc || ((vendor_id != PCI_VENDOR_ID_COMPAQ) && (vendor_id != PCI_VENDOR_ID_INTEL))) { 800 err(msg_HPC_non_compaq_or_intel); 801 return -ENODEV; 802 } 803 dbg("Vendor ID: %x\n", vendor_id); 804 805 rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); 806 dbg("revision: %d\n", rev); 807 if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) { 808 err(msg_HPC_rev_error); 809 return -ENODEV; 810 } 811 812 /* Check for the proper subsytem ID's 813 * Intel uses a different SSID programming model than Compaq. 814 * For Intel, each SSID bit identifies a PHP capability. 815 * Also Intel HPC's may have RID=0. 816 */ 817 if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) { 818 // TODO: This code can be made to support non-Compaq or Intel subsystem IDs 819 rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid); 820 if (rc) { 821 err("%s : pci_read_config_word failed\n", __FUNCTION__); 822 return rc; 823 } 824 dbg("Subsystem Vendor ID: %x\n", subsystem_vid); 825 if ((subsystem_vid != PCI_VENDOR_ID_COMPAQ) && (subsystem_vid != PCI_VENDOR_ID_INTEL)) { 826 err(msg_HPC_non_compaq_or_intel); 827 return -ENODEV; 828 } 829 830 ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL); 831 if (!ctrl) { 832 err("%s : out of memory\n", __FUNCTION__); 833 return -ENOMEM; 834 } 835 memset(ctrl, 0, sizeof(struct controller)); 836 837 rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsystem_deviceid); 838 if (rc) { 839 err("%s : pci_read_config_word failed\n", __FUNCTION__); 840 goto err_free_ctrl; 841 } 842 843 info("Hot Plug Subsystem Device ID: %x\n", subsystem_deviceid); 844 845 /* Set Vendor ID, so it can be accessed later from other functions */ 846 ctrl->vendor_id = vendor_id; 847 848 switch (subsystem_vid) { 849 case PCI_VENDOR_ID_COMPAQ: 850 if (rev >= 0x13) { /* CIOBX */ 851 ctrl->push_flag = 1; 852 ctrl->slot_switch_type = 1; 853 ctrl->push_button = 1; 854 ctrl->pci_config_space = 1; 855 ctrl->defeature_PHP = 1; 856 ctrl->pcix_support = 1; 857 ctrl->pcix_speed_capability = 1; 858 pci_read_config_byte(pdev, 0x41, &bus_cap); 859 if (bus_cap & 0x80) { 860 dbg("bus max supports 133MHz PCI-X\n"); 861 ctrl->speed_capability = PCI_SPEED_133MHz_PCIX; 862 break; 863 } 864 if (bus_cap & 0x40) { 865 dbg("bus max supports 100MHz PCI-X\n"); 866 ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; 867 break; 868 } 869 if (bus_cap & 20) { 870 dbg("bus max supports 66MHz PCI-X\n"); 871 ctrl->speed_capability = PCI_SPEED_66MHz_PCIX; 872 break; 873 } 874 if (bus_cap & 10) { 875 dbg("bus max supports 66MHz PCI\n"); 876 ctrl->speed_capability = PCI_SPEED_66MHz; 877 break; 878 } 879 880 break; 881 } 882 883 switch (subsystem_deviceid) { 884 case PCI_SUB_HPC_ID: 885 /* Original 6500/7000 implementation */ 886 ctrl->slot_switch_type = 1; 887 ctrl->speed_capability = PCI_SPEED_33MHz; 888 ctrl->push_button = 0; 889 ctrl->pci_config_space = 1; 890 ctrl->defeature_PHP = 1; 891 ctrl->pcix_support = 0; 892 ctrl->pcix_speed_capability = 0; 893 break; 894 case PCI_SUB_HPC_ID2: 895 /* First Pushbutton implementation */ 896 ctrl->push_flag = 1; 897 ctrl->slot_switch_type = 1; 898 ctrl->speed_capability = PCI_SPEED_33MHz; 899 ctrl->push_button = 1; 900 ctrl->pci_config_space = 1; 901 ctrl->defeature_PHP = 1; 902 ctrl->pcix_support = 0; 903 ctrl->pcix_speed_capability = 0; 904 break; 905 case PCI_SUB_HPC_ID_INTC: 906 /* Third party (6500/7000) */ 907 ctrl->slot_switch_type = 1; 908 ctrl->speed_capability = PCI_SPEED_33MHz; 909 ctrl->push_button = 0; 910 ctrl->pci_config_space = 1; 911 ctrl->defeature_PHP = 1; 912 ctrl->pcix_support = 0; 913 ctrl->pcix_speed_capability = 0; 914 break; 915 case PCI_SUB_HPC_ID3: 916 /* First 66 Mhz implementation */ 917 ctrl->push_flag = 1; 918 ctrl->slot_switch_type = 1; 919 ctrl->speed_capability = PCI_SPEED_66MHz; 920 ctrl->push_button = 1; 921 ctrl->pci_config_space = 1; 922 ctrl->defeature_PHP = 1; 923 ctrl->pcix_support = 0; 924 ctrl->pcix_speed_capability = 0; 925 break; 926 case PCI_SUB_HPC_ID4: 927 /* First PCI-X implementation, 100MHz */ 928 ctrl->push_flag = 1; 929 ctrl->slot_switch_type = 1; 930 ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; 931 ctrl->push_button = 1; 932 ctrl->pci_config_space = 1; 933 ctrl->defeature_PHP = 1; 934 ctrl->pcix_support = 1; 935 ctrl->pcix_speed_capability = 0; 936 break; 937 default: 938 err(msg_HPC_not_supported); 939 rc = -ENODEV; 940 goto err_free_ctrl; 941 } 942 break; 943 944 case PCI_VENDOR_ID_INTEL: 945 /* Check for speed capability (0=33, 1=66) */ 946 if (subsystem_deviceid & 0x0001) { 947 ctrl->speed_capability = PCI_SPEED_66MHz; 948 } else { 949 ctrl->speed_capability = PCI_SPEED_33MHz; 950 } 951 952 /* Check for push button */ 953 if (subsystem_deviceid & 0x0002) { 954 /* no push button */ 955 ctrl->push_button = 0; 956 } else { 957 /* push button supported */ 958 ctrl->push_button = 1; 959 } 960 961 /* Check for slot switch type (0=mechanical, 1=not mechanical) */ 962 if (subsystem_deviceid & 0x0004) { 963 /* no switch */ 964 ctrl->slot_switch_type = 0; 965 } else { 966 /* switch */ 967 ctrl->slot_switch_type = 1; 968 } 969 970 /* PHP Status (0=De-feature PHP, 1=Normal operation) */ 971 if (subsystem_deviceid & 0x0008) { 972 ctrl->defeature_PHP = 1; // PHP supported 973 } else { 974 ctrl->defeature_PHP = 0; // PHP not supported 975 } 976 977 /* Alternate Base Address Register Interface (0=not supported, 1=supported) */ 978 if (subsystem_deviceid & 0x0010) { 979 ctrl->alternate_base_address = 1; // supported 980 } else { 981 ctrl->alternate_base_address = 0; // not supported 982 } 983 984 /* PCI Config Space Index (0=not supported, 1=supported) */ 985 if (subsystem_deviceid & 0x0020) { 986 ctrl->pci_config_space = 1; // supported 987 } else { 988 ctrl->pci_config_space = 0; // not supported 989 } 990 991 /* PCI-X support */ 992 if (subsystem_deviceid & 0x0080) { 993 /* PCI-X capable */ 994 ctrl->pcix_support = 1; 995 /* Frequency of operation in PCI-X mode */ 996 if (subsystem_deviceid & 0x0040) { 997 /* 133MHz PCI-X if bit 7 is 1 */ 998 ctrl->pcix_speed_capability = 1; 999 } else { 1000 /* 100MHz PCI-X if bit 7 is 1 and bit 0 is 0, */ 1001 /* 66MHz PCI-X if bit 7 is 1 and bit 0 is 1 */ 1002 ctrl->pcix_speed_capability = 0; 1003 } 1004 } else { 1005 /* Conventional PCI */ 1006 ctrl->pcix_support = 0; 1007 ctrl->pcix_speed_capability = 0; 1008 } 1009 break; 1010 1011 default: 1012 err(msg_HPC_not_supported); 1013 rc = -ENODEV; 1014 goto err_free_ctrl; 1015 } 1016 1017 } else { 1018 err(msg_HPC_not_supported); 1019 return -ENODEV; 1020 } 1021 1022 // Tell the user that we found one. 1023 info("Initializing the PCI hot plug controller residing on PCI bus %d\n", 1024 pdev->bus->number); 1025 1026 dbg("Hotplug controller capabilities:\n"); 1027 dbg(" speed_capability %d\n", ctrl->speed_capability); 1028 dbg(" slot_switch_type %s\n", ctrl->slot_switch_type ? 1029 "switch present" : "no switch"); 1030 dbg(" defeature_PHP %s\n", ctrl->defeature_PHP ? 1031 "PHP supported" : "PHP not supported"); 1032 dbg(" alternate_base_address %s\n", ctrl->alternate_base_address ? 1033 "supported" : "not supported"); 1034 dbg(" pci_config_space %s\n", ctrl->pci_config_space ? 1035 "supported" : "not supported"); 1036 dbg(" pcix_speed_capability %s\n", ctrl->pcix_speed_capability ? 1037 "supported" : "not supported"); 1038 dbg(" pcix_support %s\n", ctrl->pcix_support ? 1039 "supported" : "not supported"); 1040 1041 ctrl->pci_dev = pdev; 1042 pci_set_drvdata(pdev, ctrl); 1043 1044 /* make our own copy of the pci bus structure, 1045 * as we like tweaking it a lot */ 1046 ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); 1047 if (!ctrl->pci_bus) { 1048 err("out of memory\n"); 1049 rc = -ENOMEM; 1050 goto err_free_ctrl; 1051 } 1052 memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus)); 1053 1054 ctrl->bus = pdev->bus->number; 1055 ctrl->rev = rev; 1056 dbg("bus device function rev: %d %d %d %d\n", ctrl->bus, 1057 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev); 1058 1059 init_MUTEX(&ctrl->crit_sect); 1060 init_waitqueue_head(&ctrl->queue); 1061 1062 /* initialize our threads if they haven't already been started up */ 1063 rc = one_time_init(); 1064 if (rc) { 1065 goto err_free_bus; 1066 } 1067 1068 dbg("pdev = %p\n", pdev); 1069 dbg("pci resource start %lx\n", pci_resource_start(pdev, 0)); 1070 dbg("pci resource len %lx\n", pci_resource_len(pdev, 0)); 1071 1072 if (!request_mem_region(pci_resource_start(pdev, 0), 1073 pci_resource_len(pdev, 0), MY_NAME)) { 1074 err("cannot reserve MMIO region\n"); 1075 rc = -ENOMEM; 1076 goto err_free_bus; 1077 } 1078 1079 ctrl->hpc_reg = ioremap(pci_resource_start(pdev, 0), 1080 pci_resource_len(pdev, 0)); 1081 if (!ctrl->hpc_reg) { 1082 err("cannot remap MMIO region %lx @ %lx\n", 1083 pci_resource_len(pdev, 0), 1084 pci_resource_start(pdev, 0)); 1085 rc = -ENODEV; 1086 goto err_free_mem_region; 1087 } 1088 1089 // Check for 66Mhz operation 1090 ctrl->speed = get_controller_speed(ctrl); 1091 1092 1093 /******************************************************** 1094 * 1095 * Save configuration headers for this and 1096 * subordinate PCI buses 1097 * 1098 ********************************************************/ 1099 1100 // find the physical slot number of the first hot plug slot 1101 1102 /* Get slot won't work for devices behind bridges, but 1103 * in this case it will always be called for the "base" 1104 * bus/dev/func of a slot. 1105 * CS: this is leveraging the PCIIRQ routing code from the kernel 1106 * (pci-pc.c: get_irq_routing_table) */ 1107 rc = get_slot_mapping(ctrl->pci_bus, pdev->bus->number, 1108 (readb(ctrl->hpc_reg + SLOT_MASK) >> 4), 1109 &(ctrl->first_slot)); 1110 dbg("get_slot_mapping: first_slot = %d, returned = %d\n", 1111 ctrl->first_slot, rc); 1112 if (rc) { 1113 err(msg_initialization_err, rc); 1114 goto err_iounmap; 1115 } 1116 1117 // Store PCI Config Space for all devices on this bus 1118 rc = cpqhp_save_config(ctrl, ctrl->bus, readb(ctrl->hpc_reg + SLOT_MASK)); 1119 if (rc) { 1120 err("%s: unable to save PCI configuration data, error %d\n", 1121 __FUNCTION__, rc); 1122 goto err_iounmap; 1123 } 1124 1125 /* 1126 * Get IO, memory, and IRQ resources for new devices 1127 */ 1128 // The next line is required for cpqhp_find_available_resources 1129 ctrl->interrupt = pdev->irq; 1130 if (ctrl->interrupt < 0x10) { 1131 cpqhp_legacy_mode = 1; 1132 dbg("System seems to be configured for Full Table Mapped MPS mode\n"); 1133 } 1134 1135 ctrl->cfgspc_irq = 0; 1136 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &ctrl->cfgspc_irq); 1137 1138 rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start); 1139 ctrl->add_support = !rc; 1140 if (rc) { 1141 dbg("cpqhp_find_available_resources = 0x%x\n", rc); 1142 err("unable to locate PCI configuration resources for hot plug add.\n"); 1143 goto err_iounmap; 1144 } 1145 1146 /* 1147 * Finish setting up the hot plug ctrl device 1148 */ 1149 ctrl->slot_device_offset = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; 1150 dbg("NumSlots %d \n", ctrl->slot_device_offset); 1151 1152 ctrl->next_event = 0; 1153 1154 /* Setup the slot information structures */ 1155 rc = ctrl_slot_setup(ctrl, smbios_start, smbios_table); 1156 if (rc) { 1157 err(msg_initialization_err, 6); 1158 err("%s: unable to save PCI configuration data, error %d\n", 1159 __FUNCTION__, rc); 1160 goto err_iounmap; 1161 } 1162 1163 /* Mask all general input interrupts */ 1164 writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_MASK); 1165 1166 /* set up the interrupt */ 1167 dbg("HPC interrupt = %d \n", ctrl->interrupt); 1168 if (request_irq(ctrl->interrupt, cpqhp_ctrl_intr, 1169 SA_SHIRQ, MY_NAME, ctrl)) { 1170 err("Can't get irq %d for the hotplug pci controller\n", 1171 ctrl->interrupt); 1172 rc = -ENODEV; 1173 goto err_iounmap; 1174 } 1175 1176 /* Enable Shift Out interrupt and clear it, also enable SERR on power fault */ 1177 temp_word = readw(ctrl->hpc_reg + MISC); 1178 temp_word |= 0x4006; 1179 writew(temp_word, ctrl->hpc_reg + MISC); 1180 1181 // Changed 05/05/97 to clear all interrupts at start 1182 writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_INPUT_CLEAR); 1183 1184 ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); 1185 1186 writel(0x0L, ctrl->hpc_reg + INT_MASK); 1187 1188 if (!cpqhp_ctrl_list) { 1189 cpqhp_ctrl_list = ctrl; 1190 ctrl->next = NULL; 1191 } else { 1192 ctrl->next = cpqhp_ctrl_list; 1193 cpqhp_ctrl_list = ctrl; 1194 } 1195 1196 // turn off empty slots here unless command line option "ON" set 1197 // Wait for exclusive access to hardware 1198 down(&ctrl->crit_sect); 1199 1200 num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; 1201 1202 // find first device number for the ctrl 1203 device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; 1204 1205 while (num_of_slots) { 1206 dbg("num_of_slots: %d\n", num_of_slots); 1207 func = cpqhp_slot_find(ctrl->bus, device, 0); 1208 if (!func) 1209 break; 1210 1211 hp_slot = func->device - ctrl->slot_device_offset; 1212 dbg("hp_slot: %d\n", hp_slot); 1213 1214 // We have to save the presence info for these slots 1215 temp_word = ctrl->ctrl_int_comp >> 16; 1216 func->presence_save = (temp_word >> hp_slot) & 0x01; 1217 func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; 1218 1219 if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { 1220 func->switch_save = 0; 1221 } else { 1222 func->switch_save = 0x10; 1223 } 1224 1225 if (!power_mode) { 1226 if (!func->is_a_board) { 1227 green_LED_off(ctrl, hp_slot); 1228 slot_disable(ctrl, hp_slot); 1229 } 1230 } 1231 1232 device++; 1233 num_of_slots--; 1234 } 1235 1236 if (!power_mode) { 1237 set_SOGO(ctrl); 1238 // Wait for SOBS to be unset 1239 wait_for_ctrl_irq(ctrl); 1240 } 1241 1242 rc = init_SERR(ctrl); 1243 if (rc) { 1244 err("init_SERR failed\n"); 1245 up(&ctrl->crit_sect); 1246 goto err_free_irq; 1247 } 1248 1249 // Done with exclusive hardware access 1250 up(&ctrl->crit_sect); 1251 1252 cpqhp_create_ctrl_files(ctrl); 1253 1254 return 0; 1255 1256 err_free_irq: 1257 free_irq(ctrl->interrupt, ctrl); 1258 err_iounmap: 1259 iounmap(ctrl->hpc_reg); 1260 err_free_mem_region: 1261 release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 1262 err_free_bus: 1263 kfree(ctrl->pci_bus); 1264 err_free_ctrl: 1265 kfree(ctrl); 1266 return rc; 1267 } 1268 1269 1270 static int one_time_init(void) 1271 { 1272 int loop; 1273 int retval = 0; 1274 static int initialized = 0; 1275 1276 if (initialized) 1277 return 0; 1278 1279 power_mode = 0; 1280 1281 retval = pci_print_IRQ_route(); 1282 if (retval) 1283 goto error; 1284 1285 dbg("Initialize + Start the notification mechanism \n"); 1286 1287 retval = cpqhp_event_start_thread(); 1288 if (retval) 1289 goto error; 1290 1291 dbg("Initialize slot lists\n"); 1292 for (loop = 0; loop < 256; loop++) { 1293 cpqhp_slot_list[loop] = NULL; 1294 } 1295 1296 // FIXME: We also need to hook the NMI handler eventually. 1297 // this also needs to be worked with Christoph 1298 // register_NMI_handler(); 1299 1300 // Map rom address 1301 cpqhp_rom_start = ioremap(ROM_PHY_ADDR, ROM_PHY_LEN); 1302 if (!cpqhp_rom_start) { 1303 err ("Could not ioremap memory region for ROM\n"); 1304 retval = -EIO; 1305 goto error; 1306 } 1307 1308 /* Now, map the int15 entry point if we are on compaq specific hardware */ 1309 compaq_nvram_init(cpqhp_rom_start); 1310 1311 /* Map smbios table entry point structure */ 1312 smbios_table = detect_SMBIOS_pointer(cpqhp_rom_start, 1313 cpqhp_rom_start + ROM_PHY_LEN); 1314 if (!smbios_table) { 1315 err ("Could not find the SMBIOS pointer in memory\n"); 1316 retval = -EIO; 1317 goto error_rom_start; 1318 } 1319 1320 smbios_start = ioremap(readl(smbios_table + ST_ADDRESS), 1321 readw(smbios_table + ST_LENGTH)); 1322 if (!smbios_start) { 1323 err ("Could not ioremap memory region taken from SMBIOS values\n"); 1324 retval = -EIO; 1325 goto error_smbios_start; 1326 } 1327 1328 initialized = 1; 1329 1330 return retval; 1331 1332 error_smbios_start: 1333 iounmap(smbios_start); 1334 error_rom_start: 1335 iounmap(cpqhp_rom_start); 1336 error: 1337 return retval; 1338 } 1339 1340 1341 static void __exit unload_cpqphpd(void) 1342 { 1343 struct pci_func *next; 1344 struct pci_func *TempSlot; 1345 int loop; 1346 u32 rc; 1347 struct controller *ctrl; 1348 struct controller *tctrl; 1349 struct pci_resource *res; 1350 struct pci_resource *tres; 1351 1352 rc = compaq_nvram_store(cpqhp_rom_start); 1353 1354 ctrl = cpqhp_ctrl_list; 1355 1356 while (ctrl) { 1357 if (ctrl->hpc_reg) { 1358 u16 misc; 1359 rc = read_slot_enable (ctrl); 1360 1361 writeb(0, ctrl->hpc_reg + SLOT_SERR); 1362 writel(0xFFFFFFC0L | ~rc, ctrl->hpc_reg + INT_MASK); 1363 1364 misc = readw(ctrl->hpc_reg + MISC); 1365 misc &= 0xFFFD; 1366 writew(misc, ctrl->hpc_reg + MISC); 1367 } 1368 1369 ctrl_slot_cleanup(ctrl); 1370 1371 res = ctrl->io_head; 1372 while (res) { 1373 tres = res; 1374 res = res->next; 1375 kfree(tres); 1376 } 1377 1378 res = ctrl->mem_head; 1379 while (res) { 1380 tres = res; 1381 res = res->next; 1382 kfree(tres); 1383 } 1384 1385 res = ctrl->p_mem_head; 1386 while (res) { 1387 tres = res; 1388 res = res->next; 1389 kfree(tres); 1390 } 1391 1392 res = ctrl->bus_head; 1393 while (res) { 1394 tres = res; 1395 res = res->next; 1396 kfree(tres); 1397 } 1398 1399 kfree (ctrl->pci_bus); 1400 1401 tctrl = ctrl; 1402 ctrl = ctrl->next; 1403 kfree(tctrl); 1404 } 1405 1406 for (loop = 0; loop < 256; loop++) { 1407 next = cpqhp_slot_list[loop]; 1408 while (next != NULL) { 1409 res = next->io_head; 1410 while (res) { 1411 tres = res; 1412 res = res->next; 1413 kfree(tres); 1414 } 1415 1416 res = next->mem_head; 1417 while (res) { 1418 tres = res; 1419 res = res->next; 1420 kfree(tres); 1421 } 1422 1423 res = next->p_mem_head; 1424 while (res) { 1425 tres = res; 1426 res = res->next; 1427 kfree(tres); 1428 } 1429 1430 res = next->bus_head; 1431 while (res) { 1432 tres = res; 1433 res = res->next; 1434 kfree(tres); 1435 } 1436 1437 TempSlot = next; 1438 next = next->next; 1439 kfree(TempSlot); 1440 } 1441 } 1442 1443 // Stop the notification mechanism 1444 cpqhp_event_stop_thread(); 1445 1446 //unmap the rom address 1447 if (cpqhp_rom_start) 1448 iounmap(cpqhp_rom_start); 1449 if (smbios_start) 1450 iounmap(smbios_start); 1451 } 1452 1453 1454 1455 static struct pci_device_id hpcd_pci_tbl[] = { 1456 { 1457 /* handle any PCI Hotplug controller */ 1458 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), 1459 .class_mask = ~0, 1460 1461 /* no matter who makes it */ 1462 .vendor = PCI_ANY_ID, 1463 .device = PCI_ANY_ID, 1464 .subvendor = PCI_ANY_ID, 1465 .subdevice = PCI_ANY_ID, 1466 1467 }, { /* end: all zeroes */ } 1468 }; 1469 1470 MODULE_DEVICE_TABLE(pci, hpcd_pci_tbl); 1471 1472 1473 1474 static struct pci_driver cpqhpc_driver = { 1475 .name = "compaq_pci_hotplug", 1476 .id_table = hpcd_pci_tbl, 1477 .probe = cpqhpc_probe, 1478 /* remove: cpqhpc_remove_one, */ 1479 }; 1480 1481 1482 1483 static int __init cpqhpc_init(void) 1484 { 1485 int result; 1486 1487 cpqhp_debug = debug; 1488 1489 info (DRIVER_DESC " version: " DRIVER_VERSION "\n"); 1490 result = pci_register_driver(&cpqhpc_driver); 1491 dbg("pci_register_driver = %d\n", result); 1492 return result; 1493 } 1494 1495 1496 static void __exit cpqhpc_cleanup(void) 1497 { 1498 dbg("unload_cpqphpd()\n"); 1499 unload_cpqphpd(); 1500 1501 dbg("pci_unregister_driver\n"); 1502 pci_unregister_driver(&cpqhpc_driver); 1503 } 1504 1505 1506 module_init(cpqhpc_init); 1507 module_exit(cpqhpc_cleanup); 1508 1509 1510