drivers/hotplug/shpchp_core.c

   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>, <dely.l.sy@intel.com>
  27  *
  28  */
  29
  30 #include <linux/config.h>
  31 #include <linux/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/types.h>
  34 #include <linux/proc_fs.h>
  35 #include <linux/miscdevice.h>
  36 #include <linux/slab.h>
  37 #include <linux/tqueue.h>
  38 #include <linux/pci.h>
  39 #include <linux/init.h>
  40 #include <asm/uaccess.h>
  41 #include "shpchp.h"
  42 #include "shpchprm.h"
  43
  44 /* Global variables */
  45 int shpchp_debug;
  46 int shpchp_poll_mode;
  47 int shpchp_poll_time;
  48 struct controller *shpchp_ctrl_list;    /* = NULL */
  49 struct pci_func *shpchp_slot_list[256];
  50
  51 #define DRIVER_VERSION  "0.4"
  52 #define DRIVER_AUTHOR   "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
  53 #define DRIVER_DESC     "Standard Hot Plug PCI Controller Driver"
  54
  55 MODULE_AUTHOR(DRIVER_AUTHOR);
  56 MODULE_DESCRIPTION(DRIVER_DESC);
  57 MODULE_LICENSE("GPL");
  58
  59 MODULE_PARM(shpchp_debug, "i");
  60 MODULE_PARM(shpchp_poll_mode, "i");
  61 MODULE_PARM(shpchp_poll_time, "i");
  62 MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not");
  63 MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not");
  64 MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds");
  65
  66 #define SHPC_MODULE_NAME "shpchp.o"
  67
  68 static int shpc_start_thread (void);
  69 static int set_attention_status (struct hotplug_slot *slot, u8 value);
  70 static int enable_slot          (struct hotplug_slot *slot);
  71 static int disable_slot         (struct hotplug_slot *slot);
  72 static int hardware_test        (struct hotplug_slot *slot, u32 value);
  73 static int get_power_status     (struct hotplug_slot *slot, u8 *value);
  74 static int get_attention_status (struct hotplug_slot *slot, u8 *value);
  75 static int get_latch_status     (struct hotplug_slot *slot, u8 *value);
  76 static int get_adapter_status   (struct hotplug_slot *slot, u8 *value);
  77 static int get_max_bus_speed    (struct hotplug_slot *slot, enum pci_bus_speed *value);
  78 static int get_cur_bus_speed    (struct hotplug_slot *slot, enum pci_bus_speed *value);
  79
  80 static struct hotplug_slot_ops shpchp_hotplug_slot_ops = {
  81         .owner =                THIS_MODULE,
  82         .set_attention_status = set_attention_status,
  83         .enable_slot =          enable_slot,
  84         .disable_slot =         disable_slot,
  85         .hardware_test =        hardware_test,
  86         .get_power_status =     get_power_status,
  87         .get_attention_status = get_attention_status,
  88         .get_latch_status =     get_latch_status,
  89         .get_adapter_status =   get_adapter_status,
  90         .get_max_bus_speed =    get_max_bus_speed,
  91         .get_cur_bus_speed =    get_cur_bus_speed,
  92 };
  93
  94 static int init_slots(struct controller *ctrl)
  95 {
  96         struct slot *new_slot;
  97         u8 number_of_slots;
  98         u8 slot_device;
  99         u32 slot_number, sun;
 100         int result;
 101
 102         dbg("%s\n",__FUNCTION__);
 103
 104         number_of_slots = ctrl->num_slots;
 105         slot_device = ctrl->slot_device_offset;
 106         slot_number = ctrl->first_slot;
 107
 108         while (number_of_slots) {
 109                 new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL);
 110                 if (!new_slot)
 111                         return -ENOMEM;
 112
 113                 memset(new_slot, 0, sizeof(struct slot));
 114                 new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
 115                 if (!new_slot->hotplug_slot) {
 116                         kfree (new_slot);
 117                         return -ENOMEM;
 118                 }
 119                 memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
 120
 121                 new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
 122                 if (!new_slot->hotplug_slot->info) {
 123                         kfree (new_slot->hotplug_slot);
 124                         kfree (new_slot);
 125                         return -ENOMEM;
 126                 }
 127                 memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
 128                 new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL);
 129                 if (!new_slot->hotplug_slot->name) {
 130                         kfree (new_slot->hotplug_slot->info);
 131                         kfree (new_slot->hotplug_slot);
 132                         kfree (new_slot);
 133                         return -ENOMEM;
 134                 }
 135
 136                 new_slot->magic = SLOT_MAGIC;
 137                 new_slot->ctrl = ctrl;
 138                 new_slot->bus = ctrl->slot_bus;
 139                 new_slot->device = slot_device;
 140                 new_slot->hpc_ops = ctrl->hpc_ops;
 141
 142                 if (shpchprm_get_physical_slot_number(ctrl, &sun, new_slot->bus, new_slot->device)) {
 143                         kfree (new_slot->hotplug_slot->info);
 144                         kfree (new_slot->hotplug_slot);
 145                         kfree (new_slot);
 146                         return -ENOMEM;
 147                 }
 148
 149                 new_slot->number = sun;
 150                 new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
 151
 152                 /* Register this slot with the hotplug pci core */
 153                 new_slot->hotplug_slot->private = new_slot;
 154                 make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
 155                 new_slot->hotplug_slot->ops = &shpchp_hotplug_slot_ops;
 156
 157                 new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
 158                 new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
 159                 new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
 160                 new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
 161
 162                 dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", new_slot->bus, new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
 163                 result = pci_hp_register (new_slot->hotplug_slot);
 164                 if (result) {
 165                         err ("pci_hp_register failed with error %d\n", result);
 166                         kfree (new_slot->hotplug_slot->info);
 167                         kfree (new_slot->hotplug_slot->name);
 168                         kfree (new_slot->hotplug_slot);
 169                         kfree (new_slot);
 170                         return result;
 171                 }
 172
 173                 new_slot->next = ctrl->slot;
 174                 ctrl->slot = new_slot;
 175
 176                 number_of_slots--;
 177                 slot_device++;
 178                 slot_number += ctrl->slot_num_inc;
 179         }
 180
 181         return(0);
 182 }
 183
 184
 185 static int cleanup_slots (struct controller * ctrl)
 186 {
 187         struct slot *old_slot, *next_slot;
 188
 189         old_slot = ctrl->slot;
 190         ctrl->slot = NULL;
 191
 192         while (old_slot) {
 193                 next_slot = old_slot->next;
 194                 pci_hp_deregister (old_slot->hotplug_slot);
 195                 kfree(old_slot->hotplug_slot->info);
 196                 kfree(old_slot->hotplug_slot->name);
 197                 kfree(old_slot->hotplug_slot);
 198                 kfree(old_slot);
 199                 old_slot = next_slot;
 200         }
 201
 202
 203         return(0);
 204 }
 205
 206 static int get_ctlr_slot_config(struct controller *ctrl)
 207 {
 208         int num_ctlr_slots;
 209         int first_device_num;
 210         int physical_slot_num;
 211         int updown;
 212         int rc;
 213         int flags;
 214
 215         rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num,
 216                 &updown, &flags);
 217         if (rc) {
 218                 err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
 219                 return (-1);
 220         }
 221
 222         ctrl->num_slots = num_ctlr_slots;
 223         ctrl->slot_device_offset = first_device_num;
 224         ctrl->first_slot = physical_slot_num;
 225         ctrl->slot_num_inc = updown;            /* either -1 or 1 */
 226
 227         dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n",
 228                 __FUNCTION__, num_ctlr_slots, first_device_num, physical_slot_num, updown,
 229                 ctrl->bus, ctrl->device);
 230
 231         return (0);
 232 }
 233
 234
 235 /*
 236  * set_attention_status - Turns the Amber LED for a slot on, off or blink
 237  */
 238 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
 239 {
 240         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 241
 242         if (slot == NULL)
 243                 return -ENODEV;
 244
 245         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 246
 247         hotplug_slot->info->attention_status = status;
 248         slot->hpc_ops->set_attention_status(slot, status);
 249
 250
 251         return 0;
 252 }
 253
 254
 255 static int enable_slot (struct hotplug_slot *hotplug_slot)
 256 {
 257         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 258
 259         if (slot == NULL)
 260                 return -ENODEV;
 261
 262         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 263
 264         return shpchp_enable_slot(slot);
 265 }
 266
 267
 268 static int disable_slot (struct hotplug_slot *hotplug_slot)
 269 {
 270         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 271
 272         if (slot == NULL)
 273                 return -ENODEV;
 274
 275         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 276
 277         return shpchp_disable_slot(slot);
 278 }
 279
 280
 281 static int hardware_test (struct hotplug_slot *hotplug_slot, u32 value)
 282 {
 283         return 0;
 284 }
 285
 286
 287 static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
 288 {
 289         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 290         int retval;
 291
 292         if (slot == NULL)
 293                 return -ENODEV;
 294
 295         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 296
 297         retval = slot->hpc_ops->get_power_status(slot, value);
 298         if (retval < 0)
 299                 *value = hotplug_slot->info->power_status;
 300
 301         return 0;
 302 }
 303
 304 static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
 305 {
 306         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 307         int retval;
 308
 309         if (slot == NULL)
 310                 return -ENODEV;
 311
 312         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 313
 314         retval = slot->hpc_ops->get_attention_status(slot, value);
 315         if (retval < 0)
 316                 *value = hotplug_slot->info->attention_status;
 317
 318         return 0;
 319 }
 320
 321 static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
 322 {
 323         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 324         int retval;
 325
 326         if (slot == NULL)
 327                 return -ENODEV;
 328
 329         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 330
 331         retval = slot->hpc_ops->get_latch_status(slot, value);
 332         if (retval < 0)
 333                 *value = hotplug_slot->info->latch_status;
 334
 335         return 0;
 336 }
 337
 338 static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
 339 {
 340         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 341         int retval;
 342
 343         if (slot == NULL)
 344                 return -ENODEV;
 345
 346         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 347
 348         retval = slot->hpc_ops->get_adapter_status(slot, value);
 349
 350         if (retval < 0)
 351                 *value = hotplug_slot->info->adapter_status;
 352
 353         return 0;
 354 }
 355
 356 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 357 {
 358         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 359         int retval;
 360
 361         if (slot == NULL)
 362                 return -ENODEV;
 363
 364         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 365
 366         retval = slot->hpc_ops->get_max_bus_speed(slot, value);
 367         if (retval < 0)
 368                 *value = PCI_SPEED_UNKNOWN;
 369
 370         return 0;
 371 }
 372
 373 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 374 {
 375         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 376         int retval;
 377
 378         if (slot == NULL)
 379                 return -ENODEV;
 380
 381         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 382
 383         retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
 384         if (retval < 0)
 385                 *value = PCI_SPEED_UNKNOWN;
 386
 387         return 0;
 388 }
 389
 390 static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 391 {
 392         int rc;
 393         struct controller *ctrl;
 394         struct slot *t_slot;
 395         int first_device_num;   /* first PCI device number supported by this SHPC */
 396         int num_ctlr_slots;             /* number of slots supported by this SHPC */
 397
 398         ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
 399         if (!ctrl) {
 400                 err("%s : out of memory\n", __FUNCTION__);
 401                 goto err_out_none;
 402         }
 403         memset(ctrl, 0, sizeof(struct controller));
 404
 405         dbg("DRV_thread pid = %d\n", current->pid);
 406
 407         rc = shpc_init(ctrl, pdev,
 408                 (php_intr_callback_t) shpchp_handle_attention_button,
 409                 (php_intr_callback_t) shpchp_handle_switch_change,
 410                 (php_intr_callback_t) shpchp_handle_presence_change,
 411                 (php_intr_callback_t) shpchp_handle_power_fault);
 412         if (rc) {
 413                 dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME);
 414                 goto err_out_free_ctrl;
 415         }
 416
 417         dbg("%s: controller initialization success\n", __FUNCTION__);
 418         ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
 419
 420         ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
 421         if (!ctrl->pci_bus) {
 422                 err("out of memory\n");
 423                 rc = -ENOMEM;
 424                 goto err_out_unmap_mmio_region;
 425         }
 426         memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
 427         ctrl->bus = pdev->bus->number;
 428         ctrl->slot_bus = pdev->subordinate->number;
 429
 430         ctrl->device = PCI_SLOT(pdev->devfn);
 431         ctrl->function = PCI_FUNC(pdev->devfn);
 432         dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device,
 433                 ctrl->function, pdev->irq);
 434
 435         /*
 436          *      Save configuration headers for this and subordinate PCI buses
 437          */
 438
 439         rc = get_ctlr_slot_config(ctrl);
 440         if (rc) {
 441                 err(msg_initialization_err, rc);
 442                 goto err_out_free_ctrl_bus;
 443         }
 444         first_device_num = ctrl->slot_device_offset;
 445         num_ctlr_slots = ctrl->num_slots;
 446
 447         /* Store PCI Config Space for all devices on this bus */
 448         rc = shpchp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num);
 449         if (rc) {
 450                 err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
 451                 goto err_out_free_ctrl_bus;
 452         }
 453
 454         /* Get IO, memory, and IRQ resources for new devices */
 455         rc = shpchprm_find_available_resources(ctrl);
 456         ctrl->add_support = !rc;
 457
 458         if (rc) {
 459                 dbg("shpchprm_find_available_resources = %#x\n", rc);
 460                 err("unable to locate PCI configuration resources for hot plug add.\n");
 461                 goto err_out_free_ctrl_bus;
 462         }
 463
 464         /* Setup the slot information structures */
 465         rc = init_slots(ctrl);
 466         if (rc) {
 467                 err(msg_initialization_err, 6);
 468                 goto err_out_free_ctrl_slot;
 469         }
 470
 471         /* Now hpc_functions (slot->hpc_ops->functions) are ready  */
 472         t_slot = shpchp_find_slot(ctrl, first_device_num);
 473
 474         /* Check for operation bus speed */
 475         rc = t_slot->hpc_ops->get_cur_bus_speed(t_slot, &ctrl->speed);
 476         dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot);
 477
 478         if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) {
 479                 err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n");
 480                 ctrl->speed = PCI_SPEED_33MHz;
 481         }
 482
 483         /* Finish setting up the hot plug ctrl device */
 484         ctrl->next_event = 0;
 485
 486         if (!shpchp_ctrl_list) {
 487                 shpchp_ctrl_list = ctrl;
 488                 ctrl->next = NULL;
 489         } else {
 490                 ctrl->next = shpchp_ctrl_list;
 491                 shpchp_ctrl_list = ctrl;
 492         }
 493
 494         return 0;
 495
 496 err_out_free_ctrl_slot:
 497         cleanup_slots(ctrl);
 498 err_out_free_ctrl_bus:
 499         kfree(ctrl->pci_bus);
 500 err_out_unmap_mmio_region:
 501         ctrl->hpc_ops->release_ctlr(ctrl);
 502 err_out_free_ctrl:
 503         kfree(ctrl);
 504 err_out_none:
 505         return -ENODEV;
 506 }
 507
 508
 509 static int shpc_start_thread(void)
 510 {
 511         int loop;
 512         int retval = 0;
 513
 514         dbg("Initialize + Start the notification/polling mechanism \n");
 515
 516         retval = shpchp_event_start_thread();
 517         if (retval) {
 518                 dbg("shpchp_event_start_thread() failed\n");
 519                 return retval;
 520         }
 521
 522         dbg("Initialize slot lists\n");
 523         /* One slot list for each bus in the system */
 524         for (loop = 0; loop < 256; loop++) {
 525                 shpchp_slot_list[loop] = NULL;
 526         }
 527
 528         return retval;
 529 }
 530
 531
 532 static void unload_shpchpd(void)
 533 {
 534         struct pci_func *next;
 535         struct pci_func *TempSlot;
 536         int loop;
 537         struct controller *ctrl;
 538         struct controller *tctrl;
 539         struct pci_resource *res;
 540         struct pci_resource *tres;
 541
 542         ctrl = shpchp_ctrl_list;
 543
 544         while (ctrl) {
 545                 cleanup_slots(ctrl);
 546
 547                 res = ctrl->io_head;
 548                 while (res) {
 549                         tres = res;
 550                         res = res->next;
 551                         kfree(tres);
 552                 }
 553
 554                 res = ctrl->mem_head;
 555                 while (res) {
 556                         tres = res;
 557                         res = res->next;
 558                         kfree(tres);
 559                 }
 560
 561                 res = ctrl->p_mem_head;
 562                 while (res) {
 563                         tres = res;
 564                         res = res->next;
 565                         kfree(tres);
 566                 }
 567
 568                 res = ctrl->bus_head;
 569                 while (res) {
 570                         tres = res;
 571                         res = res->next;
 572                         kfree(tres);
 573                 }
 574
 575                 kfree (ctrl->pci_bus);
 576
 577                 dbg("%s: calling release_ctlr\n", __FUNCTION__);
 578                 ctrl->hpc_ops->release_ctlr(ctrl);
 579
 580                 tctrl = ctrl;
 581                 ctrl = ctrl->next;
 582
 583                 kfree(tctrl);
 584         }
 585
 586         for (loop = 0; loop < 256; loop++) {
 587                 next = shpchp_slot_list[loop];
 588                 while (next != NULL) {
 589                         res = next->io_head;
 590                         while (res) {
 591                                 tres = res;
 592                                 res = res->next;
 593                                 kfree(tres);
 594                         }
 595
 596                         res = next->mem_head;
 597                         while (res) {
 598                                 tres = res;
 599                                 res = res->next;
 600                                 kfree(tres);
 601                         }
 602
 603                         res = next->p_mem_head;
 604                         while (res) {
 605                                 tres = res;
 606                                 res = res->next;
 607                                 kfree(tres);
 608                         }
 609
 610                         res = next->bus_head;
 611                         while (res) {
 612                                 tres = res;
 613                                 res = res->next;
 614                                 kfree(tres);
 615                         }
 616
 617                         TempSlot = next;
 618                         next = next->next;
 619                         kfree(TempSlot);
 620                 }
 621         }
 622
 623         /* Stop the notification mechanism */
 624         shpchp_event_stop_thread();
 625
 626 }
 627
 628
 629 static struct pci_device_id shpcd_pci_tbl[] __devinitdata = {
 630         {
 631         .class =        ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
 632         .class_mask =   ~0,
 633         .vendor =       PCI_ANY_ID,
 634         .device =       PCI_ANY_ID,
 635         .subvendor =    PCI_ANY_ID,
 636         .subdevice =    PCI_ANY_ID,
 637         },
 638         { /* end: all zeroes */ }
 639 };
 640
 641 MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);
 642
 643
 644
 645 static struct pci_driver shpc_driver = {
 646         .name =         SHPC_MODULE_NAME,
 647         .id_table =     shpcd_pci_tbl,
 648         .probe =        shpc_probe,
 649         /* remove:      shpc_remove_one, */
 650 };
 651
 652
 653
 654 static int __init shpcd_init(void)
 655 {
 656         int retval = 0;
 657
 658 #ifdef CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE
 659         shpchp_poll_mode = 1;
 660 #endif
 661
 662         retval = shpc_start_thread();
 663         if (retval)
 664                 goto error_hpc_init;
 665
 666         retval = shpchprm_init(PCI);
 667         if (!retval) {
 668                 retval = pci_module_init(&shpc_driver);
 669                 dbg("%s: pci_module_init = %d\n", __FUNCTION__,retval);
 670                 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
 671         }
 672
 673 error_hpc_init:
 674         if (retval) {
 675                 shpchprm_cleanup();
 676                 shpchp_event_stop_thread();
 677         } else
 678                         shpchprm_print_pirt();
 679
 680         return retval;
 681 }
 682
 683 static void __exit shpcd_cleanup(void)
 684 {
 685         dbg("unload_shpchpd()\n");
 686         unload_shpchpd();
 687
 688         shpchprm_cleanup();
 689
 690         dbg("pci_unregister_driver\n");
 691         pci_unregister_driver(&shpc_driver);
 692
 693         info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
 694 }
 695
 696
 697 module_init(shpcd_init);
 698 module_exit(shpcd_cleanup);
 699
 700