drivers/pci/hotplug/pciehp_core.c

   1 /*
   2  * PCI Express Hot Plug Controller Driver
   3  *
   4  * Copyright (C) 1995,2001 Compaq Computer Corporation
   5  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
   6  * Copyright (C) 2001 IBM Corp.
   7  * Copyright (C) 2003-2004 Intel Corporation
   8  *
   9  * All rights reserved.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or (at
  14  * your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  19  * NON INFRINGEMENT.  See the GNU General Public License for more
  20  * details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  *
  26  * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
  27  *
  28  */
  29
  30 #include <linux/config.h>
  31 #include <linux/module.h>
  32 #include <linux/moduleparam.h>
  33 #include <linux/kernel.h>
  34 #include <linux/types.h>
  35 #include <linux/proc_fs.h>
  36 #include <linux/slab.h>
  37 #include <linux/workqueue.h>
  38 #include <linux/pci.h>
  39 #include <linux/init.h>
  40 #include <asm/uaccess.h>
  41 #include "pciehp.h"
  42 #include "pciehprm.h"
  43 #include <linux/interrupt.h>
  44
  45 /* Global variables */
  46 int pciehp_debug;
  47 int pciehp_poll_mode;
  48 int pciehp_poll_time;
  49 struct controller *pciehp_ctrl_list;
  50 struct pci_func *pciehp_slot_list[256];
  51
  52 #define DRIVER_VERSION  "0.4"
  53 #define DRIVER_AUTHOR   "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
  54 #define DRIVER_DESC     "PCI Express Hot Plug Controller Driver"
  55
  56 MODULE_AUTHOR(DRIVER_AUTHOR);
  57 MODULE_DESCRIPTION(DRIVER_DESC);
  58 MODULE_LICENSE("GPL");
  59
  60 module_param(pciehp_debug, bool, 0644);
  61 module_param(pciehp_poll_mode, bool, 0644);
  62 module_param(pciehp_poll_time, int, 0644);
  63 MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
  64 MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
  65 MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
  66
  67 #define PCIE_MODULE_NAME "pciehp"
  68
  69 static int pcie_start_thread (void);
  70 static int set_attention_status (struct hotplug_slot *slot, u8 value);
  71 static int enable_slot          (struct hotplug_slot *slot);
  72 static int disable_slot         (struct hotplug_slot *slot);
  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 pciehp_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         .get_power_status =     get_power_status,
  86         .get_attention_status = get_attention_status,
  87         .get_latch_status =     get_latch_status,
  88         .get_adapter_status =   get_adapter_status,
  89         .get_max_bus_speed =    get_max_bus_speed,
  90         .get_cur_bus_speed =    get_cur_bus_speed,
  91 };
  92
  93 /**
  94  * release_slot - free up the memory used by a slot
  95  * @hotplug_slot: slot to free
  96  */
  97 static void release_slot(struct hotplug_slot *hotplug_slot)
  98 {
  99         struct slot *slot = hotplug_slot->private;
 100
 101         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 102
 103         kfree(slot->hotplug_slot->info);
 104         kfree(slot->hotplug_slot->name);
 105         kfree(slot->hotplug_slot);
 106         kfree(slot);
 107 }
 108
 109 static int init_slots(struct controller *ctrl)
 110 {
 111         struct slot *new_slot;
 112         u8 number_of_slots;
 113         u8 slot_device;
 114         u32 slot_number;
 115         int result = -ENOMEM;
 116
 117         dbg("%s\n",__FUNCTION__);
 118
 119         number_of_slots = ctrl->num_slots;
 120         slot_device = ctrl->slot_device_offset;
 121         slot_number = ctrl->first_slot;
 122
 123         while (number_of_slots) {
 124                 new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
 125                 if (!new_slot)
 126                         goto error;
 127
 128                 memset(new_slot, 0, sizeof(struct slot));
 129                 new_slot->hotplug_slot =
 130                                 kmalloc(sizeof(*(new_slot->hotplug_slot)),
 131                                                 GFP_KERNEL);
 132                 if (!new_slot->hotplug_slot)
 133                         goto error_slot;
 134                 memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
 135
 136                 new_slot->hotplug_slot->info =
 137                         kmalloc(sizeof(*(new_slot->hotplug_slot->info)),
 138                                                 GFP_KERNEL);
 139                 if (!new_slot->hotplug_slot->info)
 140                         goto error_hpslot;
 141                 memset(new_slot->hotplug_slot->info, 0,
 142                                         sizeof(struct hotplug_slot_info));
 143                 new_slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE,
 144                                                 GFP_KERNEL);
 145                 if (!new_slot->hotplug_slot->name)
 146                         goto error_info;
 147
 148                 new_slot->ctrl = ctrl;
 149                 new_slot->bus = ctrl->slot_bus;
 150                 new_slot->device = slot_device;
 151                 new_slot->hpc_ops = ctrl->hpc_ops;
 152
 153                 new_slot->number = ctrl->first_slot;
 154                 new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
 155
 156                 /* register this slot with the hotplug pci core */
 157                 new_slot->hotplug_slot->private = new_slot;
 158                 new_slot->hotplug_slot->release = &release_slot;
 159                 make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
 160                 new_slot->hotplug_slot->ops = &pciehp_hotplug_slot_ops;
 161
 162                 new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
 163                 new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
 164                 new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
 165                 new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
 166
 167                 dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n",
 168                         new_slot->bus, new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
 169                 result = pci_hp_register (new_slot->hotplug_slot);
 170                 if (result) {
 171                         err ("pci_hp_register failed with error %d\n", result);
 172                         goto error_name;
 173                 }
 174
 175                 new_slot->next = ctrl->slot;
 176                 ctrl->slot = new_slot;
 177
 178                 number_of_slots--;
 179                 slot_device++;
 180                 slot_number += ctrl->slot_num_inc;
 181         }
 182
 183         return 0;
 184
 185 error_name:
 186         kfree(new_slot->hotplug_slot->name);
 187 error_info:
 188         kfree(new_slot->hotplug_slot->info);
 189 error_hpslot:
 190         kfree(new_slot->hotplug_slot);
 191 error_slot:
 192         kfree(new_slot);
 193 error:
 194         return result;
 195 }
 196
 197
 198 static int cleanup_slots (struct controller * ctrl)
 199 {
 200         struct slot *old_slot, *next_slot;
 201
 202         old_slot = ctrl->slot;
 203         ctrl->slot = NULL;
 204
 205         while (old_slot) {
 206                 next_slot = old_slot->next;
 207                 pci_hp_deregister (old_slot->hotplug_slot);
 208                 old_slot = next_slot;
 209         }
 210
 211
 212         return(0);
 213 }
 214
 215 static int get_ctlr_slot_config(struct controller *ctrl)
 216 {
 217         int num_ctlr_slots;             /* Not needed; PCI Express has 1 slot per port*/
 218         int first_device_num;           /* Not needed */
 219         int physical_slot_num;
 220         u8 ctrlcap;
 221         int rc;
 222
 223         rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &ctrlcap);
 224         if (rc) {
 225                 err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
 226                 return (-1);
 227         }
 228
 229         ctrl->num_slots = num_ctlr_slots;       /* PCI Express has 1 slot per port */
 230         ctrl->slot_device_offset = first_device_num;
 231         ctrl->first_slot = physical_slot_num;
 232         ctrl->ctrlcap = ctrlcap;
 233
 234         dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) ctrlcap(%x) for b:d (%x:%x)\n",
 235                 __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, ctrlcap,
 236                 ctrl->bus, ctrl->device);
 237
 238         return (0);
 239 }
 240
 241
 242 /*
 243  * set_attention_status - Turns the Amber LED for a slot on, off or blink
 244  */
 245 static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
 246 {
 247         struct slot *slot = hotplug_slot->private;
 248
 249         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 250
 251         hotplug_slot->info->attention_status = status;
 252
 253         if (ATTN_LED(slot->ctrl->ctrlcap))
 254                 slot->hpc_ops->set_attention_status(slot, status);
 255
 256         return 0;
 257 }
 258
 259
 260 static int enable_slot(struct hotplug_slot *hotplug_slot)
 261 {
 262         struct slot *slot = hotplug_slot->private;
 263
 264         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 265
 266         return pciehp_enable_slot(slot);
 267 }
 268
 269
 270 static int disable_slot(struct hotplug_slot *hotplug_slot)
 271 {
 272         struct slot *slot = hotplug_slot->private;
 273
 274         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 275
 276         return pciehp_disable_slot(slot);
 277 }
 278
 279 static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
 280 {
 281         struct slot *slot = hotplug_slot->private;
 282         int retval;
 283
 284         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 285
 286         retval = slot->hpc_ops->get_power_status(slot, value);
 287         if (retval < 0)
 288                 *value = hotplug_slot->info->power_status;
 289
 290         return 0;
 291 }
 292
 293 static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
 294 {
 295         struct slot *slot = hotplug_slot->private;
 296         int retval;
 297
 298         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 299
 300         retval = slot->hpc_ops->get_attention_status(slot, value);
 301         if (retval < 0)
 302                 *value = hotplug_slot->info->attention_status;
 303
 304         return 0;
 305 }
 306
 307 static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
 308 {
 309         struct slot *slot = hotplug_slot->private;
 310         int retval;
 311
 312         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 313
 314         retval = slot->hpc_ops->get_latch_status(slot, value);
 315         if (retval < 0)
 316                 *value = hotplug_slot->info->latch_status;
 317
 318         return 0;
 319 }
 320
 321 static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
 322 {
 323         struct slot *slot = hotplug_slot->private;
 324         int retval;
 325
 326         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 327
 328         retval = slot->hpc_ops->get_adapter_status(slot, value);
 329         if (retval < 0)
 330                 *value = hotplug_slot->info->adapter_status;
 331
 332         return 0;
 333 }
 334
 335 static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 336 {
 337         struct slot *slot = hotplug_slot->private;
 338         int retval;
 339
 340         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 341
 342         retval = slot->hpc_ops->get_max_bus_speed(slot, value);
 343         if (retval < 0)
 344                 *value = PCI_SPEED_UNKNOWN;
 345
 346         return 0;
 347 }
 348
 349 static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 350 {
 351         struct slot *slot = hotplug_slot->private;
 352         int retval;
 353
 354         dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
 355
 356         retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
 357         if (retval < 0)
 358                 *value = PCI_SPEED_UNKNOWN;
 359
 360         return 0;
 361 }
 362
 363 static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_id *id)
 364 {
 365         int rc;
 366         struct controller *ctrl;
 367         struct slot *t_slot;
 368         int first_device_num = 0 ;      /* first PCI device number supported by this PCIE */
 369         int num_ctlr_slots;             /* number of slots supported by this HPC */
 370         u8 value;
 371         struct pci_dev *pdev;
 372
 373         dbg("%s: Called by hp_drv\n", __FUNCTION__);
 374         ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL);
 375         if (!ctrl) {
 376                 err("%s : out of memory\n", __FUNCTION__);
 377                 goto err_out_none;
 378         }
 379         memset(ctrl, 0, sizeof(struct controller));
 380
 381         dbg("%s: DRV_thread pid = %d\n", __FUNCTION__, current->pid);
 382
 383         pdev = dev->port;
 384
 385         rc = pcie_init(ctrl, dev,
 386                 (php_intr_callback_t) pciehp_handle_attention_button,
 387                 (php_intr_callback_t) pciehp_handle_switch_change,
 388                 (php_intr_callback_t) pciehp_handle_presence_change,
 389                 (php_intr_callback_t) pciehp_handle_power_fault);
 390         if (rc) {
 391                 dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME);
 392                 goto err_out_free_ctrl;
 393         }
 394
 395         ctrl->pci_dev = pdev;
 396
 397         pci_set_drvdata(pdev, ctrl);
 398
 399         ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL);
 400         if (!ctrl->pci_bus) {
 401                 err("%s: out of memory\n", __FUNCTION__);
 402                 rc = -ENOMEM;
 403                 goto err_out_unmap_mmio_region;
 404         }
 405         dbg("%s: ctrl->pci_bus %p\n", __FUNCTION__, ctrl->pci_bus);
 406         memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
 407         ctrl->bus = pdev->bus->number;  /* ctrl bus */
 408         ctrl->slot_bus = pdev->subordinate->number;  /* bus controlled by this HPC */
 409
 410         ctrl->device = PCI_SLOT(pdev->devfn);
 411         ctrl->function = PCI_FUNC(pdev->devfn);
 412         dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", __FUNCTION__,
 413                 ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
 414
 415         /*
 416          *      Save configuration headers for this and subordinate PCI buses
 417          */
 418
 419         rc = get_ctlr_slot_config(ctrl);
 420         if (rc) {
 421                 err(msg_initialization_err, rc);
 422                 goto err_out_free_ctrl_bus;
 423         }
 424         first_device_num = ctrl->slot_device_offset;
 425         num_ctlr_slots = ctrl->num_slots;
 426
 427         /* Store PCI Config Space for all devices on this bus */
 428         dbg("%s: Before calling pciehp_save_config, ctrl->bus %x,ctrl->slot_bus %x\n",
 429                 __FUNCTION__,ctrl->bus, ctrl->slot_bus);
 430         rc = pciehp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num);
 431         if (rc) {
 432                 err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
 433                 goto err_out_free_ctrl_bus;
 434         }
 435
 436         /* Get IO, memory, and IRQ resources for new devices */
 437         rc = pciehprm_find_available_resources(ctrl);
 438         ctrl->add_support = !rc;
 439
 440         if (rc) {
 441                 dbg("pciehprm_find_available_resources = %#x\n", rc);
 442                 err("unable to locate PCI configuration resources for hot plug add.\n");
 443                 goto err_out_free_ctrl_bus;
 444         }
 445
 446         /* Setup the slot information structures */
 447         rc = init_slots(ctrl);
 448         if (rc) {
 449                 err(msg_initialization_err, 6);
 450                 goto err_out_free_ctrl_slot;
 451         }
 452
 453         t_slot = pciehp_find_slot(ctrl, first_device_num);
 454         dbg("%s: t_slot %p\n", __FUNCTION__, t_slot);
 455
 456         /*      Finish setting up the hot plug ctrl device */
 457         ctrl->next_event = 0;
 458
 459         if (!pciehp_ctrl_list) {
 460                 pciehp_ctrl_list = ctrl;
 461                 ctrl->next = NULL;
 462         } else {
 463                 ctrl->next = pciehp_ctrl_list;
 464                 pciehp_ctrl_list = ctrl;
 465         }
 466
 467         /* Wait for exclusive access to hardware */
 468         down(&ctrl->crit_sect);
 469
 470         t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
 471         dbg("%s: adpater value %x\n", __FUNCTION__, value);
 472
 473         if ((POWER_CTRL(ctrl->ctrlcap)) && !value) {
 474                 rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
 475                 if (rc) {
 476                         /* Done with exclusive hardware access */
 477                         up(&ctrl->crit_sect);
 478                         goto err_out_free_ctrl_slot;
 479                 } else
 480                         /* Wait for the command to complete */
 481                         wait_for_ctrl_irq (ctrl);
 482         }
 483
 484         /* Done with exclusive hardware access */
 485         up(&ctrl->crit_sect);
 486
 487         return 0;
 488
 489 err_out_free_ctrl_slot:
 490         cleanup_slots(ctrl);
 491 err_out_free_ctrl_bus:
 492         kfree(ctrl->pci_bus);
 493 err_out_unmap_mmio_region:
 494         ctrl->hpc_ops->release_ctlr(ctrl);
 495 err_out_free_ctrl:
 496         kfree(ctrl);
 497 err_out_none:
 498         return -ENODEV;
 499 }
 500
 501
 502 static int pcie_start_thread(void)
 503 {
 504         int loop;
 505         int retval = 0;
 506
 507         dbg("Initialize + Start the notification/polling mechanism \n");
 508
 509         retval = pciehp_event_start_thread();
 510         if (retval) {
 511                 dbg("pciehp_event_start_thread() failed\n");
 512                 return retval;
 513         }
 514
 515         dbg("Initialize slot lists\n");
 516         /* One slot list for each bus in the system */
 517         for (loop = 0; loop < 256; loop++) {
 518                 pciehp_slot_list[loop] = NULL;
 519         }
 520
 521         return retval;
 522 }
 523
 524 static inline void __exit
 525 free_pciehp_res(struct pci_resource *res)
 526 {
 527         struct pci_resource *tres;
 528
 529         while (res) {
 530                 tres = res;
 531                 res = res->next;
 532                 kfree(tres);
 533         }
 534 }
 535
 536 static void __exit unload_pciehpd(void)
 537 {
 538         struct pci_func *next;
 539         struct pci_func *TempSlot;
 540         int loop;
 541         struct controller *ctrl;
 542         struct controller *tctrl;
 543
 544         ctrl = pciehp_ctrl_list;
 545
 546         while (ctrl) {
 547                 cleanup_slots(ctrl);
 548
 549                 free_pciehp_res(ctrl->io_head);
 550                 free_pciehp_res(ctrl->mem_head);
 551                 free_pciehp_res(ctrl->p_mem_head);
 552                 free_pciehp_res(ctrl->bus_head);
 553
 554                 kfree (ctrl->pci_bus);
 555
 556                 ctrl->hpc_ops->release_ctlr(ctrl);
 557
 558                 tctrl = ctrl;
 559                 ctrl = ctrl->next;
 560
 561                 kfree(tctrl);
 562         }
 563
 564         for (loop = 0; loop < 256; loop++) {
 565                 next = pciehp_slot_list[loop];
 566                 while (next != NULL) {
 567                         free_pciehp_res(next->io_head);
 568                         free_pciehp_res(next->mem_head);
 569                         free_pciehp_res(next->p_mem_head);
 570                         free_pciehp_res(next->bus_head);
 571
 572                         TempSlot = next;
 573                         next = next->next;
 574                         kfree(TempSlot);
 575                 }
 576         }
 577
 578         /* Stop the notification mechanism */
 579         pciehp_event_stop_thread();
 580
 581 }
 582
 583 int hpdriver_context = 0;
 584
 585 static void pciehp_remove (struct pcie_device *device)
 586 {
 587         printk("%s ENTRY\n", __FUNCTION__);
 588         printk("%s -> Call free_irq for irq = %d\n",
 589                 __FUNCTION__, device->irq);
 590         free_irq(device->irq, &hpdriver_context);
 591 }
 592
 593 #ifdef CONFIG_PM
 594 static int pciehp_suspend (struct pcie_device *dev, pm_message_t state)
 595 {
 596         printk("%s ENTRY\n", __FUNCTION__);
 597         return 0;
 598 }
 599
 600 static int pciehp_resume (struct pcie_device *dev)
 601 {
 602         printk("%s ENTRY\n", __FUNCTION__);
 603         return 0;
 604 }
 605 #endif
 606
 607 static struct pcie_port_service_id port_pci_ids[] = { {
 608         .vendor = PCI_ANY_ID,
 609         .device = PCI_ANY_ID,
 610         .port_type = PCIE_ANY_PORT,
 611         .service_type = PCIE_PORT_SERVICE_HP,
 612         .driver_data =  0,
 613         }, { /* end: all zeroes */ }
 614 };
 615 static const char device_name[] = "hpdriver";
 616
 617 static struct pcie_port_service_driver hpdriver_portdrv = {
 618         .name           = (char *)device_name,
 619         .id_table       = &port_pci_ids[0],
 620
 621         .probe          = pciehp_probe,
 622         .remove         = pciehp_remove,
 623
 624 #ifdef  CONFIG_PM
 625         .suspend        = pciehp_suspend,
 626         .resume         = pciehp_resume,
 627 #endif  /* PM */
 628 };
 629
 630 static int __init pcied_init(void)
 631 {
 632         int retval = 0;
 633
 634 #ifdef CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE
 635         pciehp_poll_mode = 1;
 636 #endif
 637
 638         retval = pcie_start_thread();
 639         if (retval)
 640                 goto error_hpc_init;
 641
 642         retval = pciehprm_init(PCI);
 643         if (!retval) {
 644                 retval = pcie_port_service_register(&hpdriver_portdrv);
 645                 dbg("pcie_port_service_register = %d\n", retval);
 646                 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
 647                 if (retval)
 648                    dbg("%s: Failure to register service\n", __FUNCTION__);
 649         }
 650
 651 error_hpc_init:
 652         if (retval) {
 653                 pciehprm_cleanup();
 654                 pciehp_event_stop_thread();
 655         } else
 656                 pciehprm_print_pirt();
 657
 658         return retval;
 659 }
 660
 661 static void __exit pcied_cleanup(void)
 662 {
 663         dbg("unload_pciehpd()\n");
 664         unload_pciehpd();
 665
 666         pciehprm_cleanup();
 667
 668         dbg("pcie_port_service_unregister\n");
 669         pcie_port_service_unregister(&hpdriver_portdrv);
 670
 671         info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
 672 }
 673
 674 module_init(pcied_init);
 675 module_exit(pcied_cleanup);