drivers/pci/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/workqueue.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"
  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,
 163                         new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
 164                 result = pci_hp_register (new_slot->hotplug_slot);
 165                 if (result) {
 166                         err ("pci_hp_register failed with error %d\n", result);
 167                         kfree (new_slot->hotplug_slot->info);
 168                         kfree (new_slot->hotplug_slot->name);
 169                         kfree (new_slot->hotplug_slot);
 170                         kfree (new_slot);
 171                         return result;
 172                 }
 173
 174                 new_slot->next = ctrl->slot;
 175                 ctrl->slot = new_slot;
 176
 177                 number_of_slots--;
 178                 slot_device++;
 179                 slot_number += ctrl->slot_num_inc;
 180         }
 181
 182         return(0);
 183 }
 184
 185
 186 static int cleanup_slots (struct controller * ctrl)
 187 {
 188         struct slot *old_slot, *next_slot;
 189
 190         old_slot = ctrl->slot;
 191         ctrl->slot = NULL;
 192
 193         while (old_slot) {
 194                 next_slot = old_slot->next;
 195                 pci_hp_deregister (old_slot->hotplug_slot);
 196                 kfree(old_slot->hotplug_slot->info);
 197                 kfree(old_slot->hotplug_slot->name);
 198                 kfree(old_slot->hotplug_slot);
 199                 kfree(old_slot);
 200                 old_slot = next_slot;
 201         }
 202
 203
 204         return(0);
 205 }
 206
 207 static int get_ctlr_slot_config(struct controller *ctrl)
 208 {
 209         int num_ctlr_slots;
 210         int first_device_num;
 211         int physical_slot_num;
 212         int updown;
 213         int rc;
 214         int flags;
 215
 216         rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &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, ctrl->bus, ctrl->device);
 229
 230         return (0);
 231 }
 232
 233
 234 /*
 235  * set_attention_status - Turns the Amber LED for a slot on, off or blink
 236  */
 237 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
 238 {
 239         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 240
 241         if (slot == NULL)
 242                 return -ENODEV;
 243
 244         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 245
 246         hotplug_slot->info->attention_status = status;
 247         slot->hpc_ops->set_attention_status(slot, status);
 248
 249
 250         return 0;
 251 }
 252
 253
 254 static int enable_slot (struct hotplug_slot *hotplug_slot)
 255 {
 256         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 257
 258         if (slot == NULL)
 259                 return -ENODEV;
 260
 261         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 262
 263         return shpchp_enable_slot(slot);
 264 }
 265
 266
 267 static int disable_slot (struct hotplug_slot *hotplug_slot)
 268 {
 269         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 270
 271         if (slot == NULL)
 272                 return -ENODEV;
 273
 274         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 275
 276         return shpchp_disable_slot(slot);
 277 }
 278
 279
 280 static int hardware_test (struct hotplug_slot *hotplug_slot, u32 value)
 281 {
 282         return 0;
 283 }
 284
 285
 286 static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
 287 {
 288         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 289         int retval;
 290
 291         if (slot == NULL)
 292                 return -ENODEV;
 293
 294         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 295
 296         retval = slot->hpc_ops->get_power_status(slot, value);
 297         if (retval < 0)
 298                 *value = hotplug_slot->info->power_status;
 299
 300         return 0;
 301 }
 302
 303 static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
 304 {
 305         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 306         int retval;
 307
 308         if (slot == NULL)
 309                 return -ENODEV;
 310
 311         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 312
 313         retval = slot->hpc_ops->get_attention_status(slot, value);
 314         if (retval < 0)
 315                 *value = hotplug_slot->info->attention_status;
 316
 317         return 0;
 318 }
 319
 320 static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
 321 {
 322         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 323         int retval;
 324
 325         if (slot == NULL)
 326                 return -ENODEV;
 327
 328         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 329
 330         retval = slot->hpc_ops->get_latch_status(slot, value);
 331         if (retval < 0)
 332                 *value = hotplug_slot->info->latch_status;
 333
 334         return 0;
 335 }
 336
 337 static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
 338 {
 339         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 340         int retval;
 341
 342         if (slot == NULL)
 343                 return -ENODEV;
 344
 345         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 346
 347         retval = slot->hpc_ops->get_adapter_status(slot, value);
 348
 349         if (retval < 0)
 350                 *value = hotplug_slot->info->adapter_status;
 351
 352         return 0;
 353 }
 354
 355 static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 356 {
 357         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 358         int retval;
 359
 360         if (slot == NULL)
 361                 return -ENODEV;
 362
 363         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 364
 365         retval = slot->hpc_ops->get_max_bus_speed(slot, value);
 366         if (retval < 0)
 367                 *value = PCI_SPEED_UNKNOWN;
 368
 369         return 0;
 370 }
 371
 372 static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 373 {
 374         struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
 375         int retval;
 376
 377         if (slot == NULL)
 378                 return -ENODEV;
 379
 380         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 381
 382         retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
 383         if (retval < 0)
 384                 *value = PCI_SPEED_UNKNOWN;
 385
 386         return 0;
 387 }
 388
 389 static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 390 {
 391         int rc;
 392         struct controller *ctrl;
 393         struct slot *t_slot;
 394         int first_device_num;   /* first PCI device number supported by this SHPC */
 395         int num_ctlr_slots;     /* number of slots supported by this SHPC */
 396
 397         ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
 398         if (!ctrl) {
 399                 err("%s : out of memory\n", __FUNCTION__);
 400                 goto err_out_none;
 401         }
 402         memset(ctrl, 0, sizeof(struct controller));
 403
 404         dbg("DRV_thread pid = %d\n", current->pid);
 405
 406         rc = shpc_init(ctrl, pdev,
 407                         (php_intr_callback_t) shpchp_handle_attention_button,
 408                         (php_intr_callback_t) shpchp_handle_switch_change,
 409                         (php_intr_callback_t) shpchp_handle_presence_change,
 410                         (php_intr_callback_t) shpchp_handle_power_fault);
 411         if (rc) {
 412                 dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME);
 413                 goto err_out_free_ctrl;
 414         }
 415
 416         dbg("%s: controller initialization success\n", __FUNCTION__);
 417         ctrl->pci_dev = pdev;  /* pci_dev of the P2P bridge */
 418
 419         pci_set_drvdata(pdev, ctrl);
 420
 421         ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
 422         if (!ctrl->pci_bus) {
 423                 err("out of memory\n");
 424                 rc = -ENOMEM;
 425                 goto err_out_unmap_mmio_region;
 426         }
 427
 428         memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
 429         ctrl->bus = pdev->bus->number;
 430         ctrl->slot_bus = pdev->subordinate->number;
 431
 432         ctrl->device = PCI_SLOT(pdev->devfn);
 433         ctrl->function = PCI_FUNC(pdev->devfn);
 434         dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
 435
 436         /*
 437          *      Save configuration headers for this and subordinate PCI buses
 438          */
 439
 440         rc = get_ctlr_slot_config(ctrl);
 441         if (rc) {
 442                 err(msg_initialization_err, rc);
 443                 goto err_out_free_ctrl_bus;
 444         }
 445         first_device_num = ctrl->slot_device_offset;
 446         num_ctlr_slots = ctrl->num_slots;
 447
 448         /* Store PCI Config Space for all devices on this bus */
 449         rc = shpchp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num);
 450         if (rc) {
 451                 err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
 452                 goto err_out_free_ctrl_bus;
 453         }
 454
 455         /* Get IO, memory, and IRQ resources for new devices */
 456         rc = shpchprm_find_available_resources(ctrl);
 457         ctrl->add_support = !rc;
 458
 459         if (rc) {
 460                 dbg("shpchprm_find_available_resources = %#x\n", rc);
 461                 err("unable to locate PCI configuration resources for hot plug add.\n");
 462                 goto err_out_free_ctrl_bus;
 463         }
 464
 465         /* Setup the slot information structures */
 466         rc = init_slots(ctrl);
 467         if (rc) {
 468                 err(msg_initialization_err, 6);
 469                 goto err_out_free_ctrl_slot;
 470         }
 471
 472         /* Now hpc_functions (slot->hpc_ops->functions) are ready  */
 473         t_slot = shpchp_find_slot(ctrl, first_device_num);
 474
 475         /* Check for operation bus speed */
 476         rc = t_slot->hpc_ops->get_cur_bus_speed(t_slot, &ctrl->speed);
 477         dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot);
 478
 479         if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) {
 480                 err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n");
 481                 ctrl->speed = PCI_SPEED_33MHz;
 482         }
 483
 484         /* Finish setting up the hot plug ctrl device */
 485         ctrl->next_event = 0;
 486
 487         if (!shpchp_ctrl_list) {
 488                 shpchp_ctrl_list = ctrl;
 489                 ctrl->next = NULL;
 490         } else {
 491                 ctrl->next = shpchp_ctrl_list;
 492                 shpchp_ctrl_list = ctrl;
 493         }
 494
 495         shpchp_create_ctrl_files(ctrl);
 496
 497         return 0;
 498
 499 err_out_free_ctrl_slot:
 500         cleanup_slots(ctrl);
 501 err_out_free_ctrl_bus:
 502         kfree(ctrl->pci_bus);
 503 err_out_unmap_mmio_region:
 504         ctrl->hpc_ops->release_ctlr(ctrl);
 505 err_out_free_ctrl:
 506         kfree(ctrl);
 507 err_out_none:
 508         return -ENODEV;
 509 }
 510
 511
 512 static int shpc_start_thread(void)
 513 {
 514         int loop;
 515         int retval = 0;
 516
 517         dbg("Initialize + Start the notification/polling mechanism \n");
 518
 519         retval = shpchp_event_start_thread();
 520         if (retval) {
 521                 dbg("shpchp_event_start_thread() failed\n");
 522                 return retval;
 523         }
 524
 525         dbg("Initialize slot lists\n");
 526         /* One slot list for each bus in the system */
 527         for (loop = 0; loop < 256; loop++) {
 528                 shpchp_slot_list[loop] = NULL;
 529         }
 530
 531         return retval;
 532 }
 533
 534
 535 static void unload_shpchpd(void)
 536 {
 537         struct pci_func *next;
 538         struct pci_func *TempSlot;
 539         int loop;
 540         struct controller *ctrl;
 541         struct controller *tctrl;
 542         struct pci_resource *res;
 543         struct pci_resource *tres;
 544
 545         ctrl = shpchp_ctrl_list;
 546
 547         while (ctrl) {
 548                 cleanup_slots(ctrl);
 549
 550                 res = ctrl->io_head;
 551                 while (res) {
 552                         tres = res;
 553                         res = res->next;
 554                         kfree(tres);
 555                 }
 556
 557                 res = ctrl->mem_head;
 558                 while (res) {
 559                         tres = res;
 560                         res = res->next;
 561                         kfree(tres);
 562                 }
 563
 564                 res = ctrl->p_mem_head;
 565                 while (res) {
 566                         tres = res;
 567                         res = res->next;
 568                         kfree(tres);
 569                 }
 570
 571                 res = ctrl->bus_head;
 572                 while (res) {
 573                         tres = res;
 574                         res = res->next;
 575                         kfree(tres);
 576                 }
 577
 578                 kfree (ctrl->pci_bus);
 579
 580                 dbg("%s: calling release_ctlr\n", __FUNCTION__);
 581                 ctrl->hpc_ops->release_ctlr(ctrl);
 582
 583                 tctrl = ctrl;
 584                 ctrl = ctrl->next;
 585
 586                 kfree(tctrl);
 587         }
 588
 589         for (loop = 0; loop < 256; loop++) {
 590                 next = shpchp_slot_list[loop];
 591                 while (next != NULL) {
 592                         res = next->io_head;
 593                         while (res) {
 594                                 tres = res;
 595                                 res = res->next;
 596                                 kfree(tres);
 597                         }
 598
 599                         res = next->mem_head;
 600                         while (res) {
 601                                 tres = res;
 602                                 res = res->next;
 603                                 kfree(tres);
 604                         }
 605
 606                         res = next->p_mem_head;
 607                         while (res) {
 608                                 tres = res;
 609                                 res = res->next;
 610                                 kfree(tres);
 611                         }
 612
 613                         res = next->bus_head;
 614                         while (res) {
 615                                 tres = res;
 616                                 res = res->next;
 617                                 kfree(tres);
 618                         }
 619
 620                         TempSlot = next;
 621                         next = next->next;
 622                         kfree(TempSlot);
 623                 }
 624         }
 625
 626         /* Stop the notification mechanism */
 627         shpchp_event_stop_thread();
 628
 629 }
 630
 631
 632 static struct pci_device_id shpcd_pci_tbl[] = {
 633         {
 634         .class =        ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
 635         .class_mask =   ~0,
 636         .vendor =       PCI_ANY_ID,
 637         .device =       PCI_ANY_ID,
 638         .subvendor =    PCI_ANY_ID,
 639         .subdevice =    PCI_ANY_ID,
 640         },
 641
 642         { /* end: all zeroes */ }
 643 };
 644
 645 MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);
 646
 647
 648
 649 static struct pci_driver shpc_driver = {
 650         .name =         SHPC_MODULE_NAME,
 651         .id_table =     shpcd_pci_tbl,
 652         .probe =        shpc_probe,
 653         /* remove:      shpc_remove_one, */
 654 };
 655
 656
 657
 658 static int __init shpcd_init(void)
 659 {
 660         int retval = 0;
 661
 662 #ifdef CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE
 663         shpchp_poll_mode = 1;
 664 #endif
 665
 666         retval = shpc_start_thread();
 667         if (retval)
 668                 goto error_hpc_init;
 669
 670         retval = shpchprm_init(PCI);
 671         if (!retval) {
 672                 retval = pci_module_init(&shpc_driver);
 673                 dbg("%s: pci_module_init = %d\n", __FUNCTION__, retval);
 674                 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
 675         }
 676
 677 error_hpc_init:
 678         if (retval) {
 679                 shpchprm_cleanup();
 680                 shpchp_event_stop_thread();
 681         } else
 682                 shpchprm_print_pirt();
 683
 684         return retval;
 685 }
 686
 687 static void __exit shpcd_cleanup(void)
 688 {
 689         dbg("unload_shpchpd()\n");
 690         unload_shpchpd();
 691
 692         shpchprm_cleanup();
 693
 694         dbg("pci_unregister_driver\n");
 695         pci_unregister_driver(&shpc_driver);
 696
 697         info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
 698 }
 699
 700
 701 module_init(shpcd_init);
 702 module_exit(shpcd_cleanup);
 703
 704