11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Standard Hot Plug Controller Driver 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1995,2001 Compaq Computer Corporation 51da177e4SLinus Torvalds * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) 61da177e4SLinus Torvalds * Copyright (C) 2001 IBM Corp. 71da177e4SLinus Torvalds * Copyright (C) 2003-2004 Intel Corporation 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * All rights reserved. 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 121da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 131da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or (at 141da177e4SLinus Torvalds * your option) any later version. 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, but 171da177e4SLinus Torvalds * WITHOUT ANY WARRANTY; without even the implied warranty of 181da177e4SLinus Torvalds * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 191da177e4SLinus Torvalds * NON INFRINGEMENT. See the GNU General Public License for more 201da177e4SLinus Torvalds * details. 211da177e4SLinus Torvalds * 221da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 231da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 241da177e4SLinus Torvalds * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 251da177e4SLinus Torvalds * 268cf4c195SKristen Accardi * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> 271da177e4SLinus Torvalds * 281da177e4SLinus Torvalds */ 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include <linux/module.h> 311da177e4SLinus Torvalds #include <linux/moduleparam.h> 321da177e4SLinus Torvalds #include <linux/kernel.h> 331da177e4SLinus Torvalds #include <linux/types.h> 345a0e3ad6STejun Heo #include <linux/slab.h> 351da177e4SLinus Torvalds #include <linux/pci.h> 36f7391f53SKenji Kaneshige #include <linux/workqueue.h> 371da177e4SLinus Torvalds #include "shpchp.h" 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds /* Global variables */ 401da177e4SLinus Torvalds int shpchp_debug; 411da177e4SLinus Torvalds int shpchp_poll_mode; 421da177e4SLinus Torvalds int shpchp_poll_time; 43f7391f53SKenji Kaneshige struct workqueue_struct *shpchp_wq; 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds #define DRIVER_VERSION "0.4" 461da177e4SLinus Torvalds #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>" 471da177e4SLinus Torvalds #define DRIVER_DESC "Standard Hot Plug PCI Controller Driver" 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds MODULE_AUTHOR(DRIVER_AUTHOR); 501da177e4SLinus Torvalds MODULE_DESCRIPTION(DRIVER_DESC); 511da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds module_param(shpchp_debug, bool, 0644); 541da177e4SLinus Torvalds module_param(shpchp_poll_mode, bool, 0644); 551da177e4SLinus Torvalds module_param(shpchp_poll_time, int, 0644); 561da177e4SLinus Torvalds MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not"); 571da177e4SLinus Torvalds MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not"); 581da177e4SLinus Torvalds MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds"); 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds #define SHPC_MODULE_NAME "shpchp" 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds static int set_attention_status (struct hotplug_slot *slot, u8 value); 631da177e4SLinus Torvalds static int enable_slot (struct hotplug_slot *slot); 641da177e4SLinus Torvalds static int disable_slot (struct hotplug_slot *slot); 651da177e4SLinus Torvalds static int get_power_status (struct hotplug_slot *slot, u8 *value); 661da177e4SLinus Torvalds static int get_attention_status (struct hotplug_slot *slot, u8 *value); 671da177e4SLinus Torvalds static int get_latch_status (struct hotplug_slot *slot, u8 *value); 681da177e4SLinus Torvalds static int get_adapter_status (struct hotplug_slot *slot, u8 *value); 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds static struct hotplug_slot_ops shpchp_hotplug_slot_ops = { 711da177e4SLinus Torvalds .set_attention_status = set_attention_status, 721da177e4SLinus Torvalds .enable_slot = enable_slot, 731da177e4SLinus Torvalds .disable_slot = disable_slot, 741da177e4SLinus Torvalds .get_power_status = get_power_status, 751da177e4SLinus Torvalds .get_attention_status = get_attention_status, 761da177e4SLinus Torvalds .get_latch_status = get_latch_status, 771da177e4SLinus Torvalds .get_adapter_status = get_adapter_status, 781da177e4SLinus Torvalds }; 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds /** 811da177e4SLinus Torvalds * release_slot - free up the memory used by a slot 821da177e4SLinus Torvalds * @hotplug_slot: slot to free 831da177e4SLinus Torvalds */ 841da177e4SLinus Torvalds static void release_slot(struct hotplug_slot *hotplug_slot) 851da177e4SLinus Torvalds { 86ee17fd93SDely Sy struct slot *slot = hotplug_slot->private; 871da177e4SLinus Torvalds 88be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 89f98ca311STaku Izumi __func__, slot_name(slot)); 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds kfree(slot->hotplug_slot->info); 921da177e4SLinus Torvalds kfree(slot->hotplug_slot); 931da177e4SLinus Torvalds kfree(slot); 941da177e4SLinus Torvalds } 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds static int init_slots(struct controller *ctrl) 971da177e4SLinus Torvalds { 98926030f6SKenji Kaneshige struct slot *slot; 99926030f6SKenji Kaneshige struct hotplug_slot *hotplug_slot; 100926030f6SKenji Kaneshige struct hotplug_slot_info *info; 10166f17055SAlex Chiang char name[SLOT_NAME_SIZE]; 102926030f6SKenji Kaneshige int retval = -ENOMEM; 1035fe6cc60SAlex Chiang int i; 1041da177e4SLinus Torvalds 105926030f6SKenji Kaneshige for (i = 0; i < ctrl->num_slots; i++) { 10657c95c0dSKenji Kaneshige slot = kzalloc(sizeof(*slot), GFP_KERNEL); 107926030f6SKenji Kaneshige if (!slot) 1081da177e4SLinus Torvalds goto error; 1091da177e4SLinus Torvalds 11057c95c0dSKenji Kaneshige hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL); 111926030f6SKenji Kaneshige if (!hotplug_slot) 1121da177e4SLinus Torvalds goto error_slot; 113926030f6SKenji Kaneshige slot->hotplug_slot = hotplug_slot; 1141da177e4SLinus Torvalds 11557c95c0dSKenji Kaneshige info = kzalloc(sizeof(*info), GFP_KERNEL); 116926030f6SKenji Kaneshige if (!info) 1171da177e4SLinus Torvalds goto error_hpslot; 118926030f6SKenji Kaneshige hotplug_slot->info = info; 1191da177e4SLinus Torvalds 120926030f6SKenji Kaneshige slot->hp_slot = i; 121926030f6SKenji Kaneshige slot->ctrl = ctrl; 122227b84c7SKenji Kaneshige slot->bus = ctrl->pci_dev->subordinate->number; 123926030f6SKenji Kaneshige slot->device = ctrl->slot_device_offset + i; 124926030f6SKenji Kaneshige slot->hpc_ops = ctrl->hpc_ops; 1256f39be2eSKenji Kaneshige slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i); 126a246fa4eSKenji Kaneshige mutex_init(&slot->lock); 127e325e1f0SKristen Carlson Accardi INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work); 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds /* register this slot with the hotplug pci core */ 130926030f6SKenji Kaneshige hotplug_slot->private = slot; 131926030f6SKenji Kaneshige hotplug_slot->release = &release_slot; 13266f17055SAlex Chiang snprintf(name, SLOT_NAME_SIZE, "%d", slot->number); 133926030f6SKenji Kaneshige hotplug_slot->ops = &shpchp_hotplug_slot_ops; 1341da177e4SLinus Torvalds 135be7bce25STaku Izumi ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x " 136be7bce25STaku Izumi "hp_slot=%x sun=%x slot_device_offset=%x\n", 137be7bce25STaku Izumi pci_domain_nr(ctrl->pci_dev->subordinate), 138be7bce25STaku Izumi slot->bus, slot->device, slot->hp_slot, slot->number, 139be7bce25STaku Izumi ctrl->slot_device_offset); 140f46753c5SAlex Chiang retval = pci_hp_register(slot->hotplug_slot, 14166f17055SAlex Chiang ctrl->pci_dev->subordinate, slot->device, name); 142926030f6SKenji Kaneshige if (retval) { 143f98ca311STaku Izumi ctrl_err(ctrl, "pci_hp_register failed with error %d\n", 144f98ca311STaku Izumi retval); 145bbe779dbSKenji Kaneshige goto error_info; 1461da177e4SLinus Torvalds } 1471da177e4SLinus Torvalds 14866f17055SAlex Chiang get_power_status(hotplug_slot, &info->power_status); 14966f17055SAlex Chiang get_attention_status(hotplug_slot, &info->attention_status); 15066f17055SAlex Chiang get_latch_status(hotplug_slot, &info->latch_status); 15166f17055SAlex Chiang get_adapter_status(hotplug_slot, &info->adapter_status); 15266f17055SAlex Chiang 1535b1a960dSKenji Kaneshige list_add(&slot->slot_list, &ctrl->slot_list); 1541da177e4SLinus Torvalds } 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds return 0; 1571da177e4SLinus Torvalds error_info: 158926030f6SKenji Kaneshige kfree(info); 1591da177e4SLinus Torvalds error_hpslot: 160926030f6SKenji Kaneshige kfree(hotplug_slot); 1611da177e4SLinus Torvalds error_slot: 162926030f6SKenji Kaneshige kfree(slot); 1631da177e4SLinus Torvalds error: 164926030f6SKenji Kaneshige return retval; 1651da177e4SLinus Torvalds } 1661da177e4SLinus Torvalds 167f7391f53SKenji Kaneshige void cleanup_slots(struct controller *ctrl) 1681da177e4SLinus Torvalds { 1695b1a960dSKenji Kaneshige struct list_head *tmp; 1705b1a960dSKenji Kaneshige struct list_head *next; 1715b1a960dSKenji Kaneshige struct slot *slot; 1721da177e4SLinus Torvalds 1735b1a960dSKenji Kaneshige list_for_each_safe(tmp, next, &ctrl->slot_list) { 1745b1a960dSKenji Kaneshige slot = list_entry(tmp, struct slot, slot_list); 1755b1a960dSKenji Kaneshige list_del(&slot->slot_list); 176f7391f53SKenji Kaneshige cancel_delayed_work(&slot->work); 177a246fa4eSKenji Kaneshige flush_scheduled_work(); 178f7391f53SKenji Kaneshige flush_workqueue(shpchp_wq); 1795b1a960dSKenji Kaneshige pci_hp_deregister(slot->hotplug_slot); 1801da177e4SLinus Torvalds } 1811da177e4SLinus Torvalds } 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* 1841da177e4SLinus Torvalds * set_attention_status - Turns the Amber LED for a slot on, off or blink 1851da177e4SLinus Torvalds */ 1861da177e4SLinus Torvalds static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) 1871da177e4SLinus Torvalds { 1888352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 1891da177e4SLinus Torvalds 190be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 191f98ca311STaku Izumi __func__, slot_name(slot)); 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds hotplug_slot->info->attention_status = status; 1941da177e4SLinus Torvalds slot->hpc_ops->set_attention_status(slot, status); 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds return 0; 1971da177e4SLinus Torvalds } 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds static int enable_slot (struct hotplug_slot *hotplug_slot) 2001da177e4SLinus Torvalds { 2018352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 2021da177e4SLinus Torvalds 203be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 204f98ca311STaku Izumi __func__, slot_name(slot)); 2051da177e4SLinus Torvalds 206a246fa4eSKenji Kaneshige return shpchp_sysfs_enable_slot(slot); 2071da177e4SLinus Torvalds } 2081da177e4SLinus Torvalds 2091da177e4SLinus Torvalds static int disable_slot (struct hotplug_slot *hotplug_slot) 2101da177e4SLinus Torvalds { 2118352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 2121da177e4SLinus Torvalds 213be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 214f98ca311STaku Izumi __func__, slot_name(slot)); 2151da177e4SLinus Torvalds 216a246fa4eSKenji Kaneshige return shpchp_sysfs_disable_slot(slot); 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value) 2201da177e4SLinus Torvalds { 2218352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 2221da177e4SLinus Torvalds int retval; 2231da177e4SLinus Torvalds 224be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 225f98ca311STaku Izumi __func__, slot_name(slot)); 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds retval = slot->hpc_ops->get_power_status(slot, value); 2281da177e4SLinus Torvalds if (retval < 0) 2291da177e4SLinus Torvalds *value = hotplug_slot->info->power_status; 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds return 0; 2321da177e4SLinus Torvalds } 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value) 2351da177e4SLinus Torvalds { 2368352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 2371da177e4SLinus Torvalds int retval; 2381da177e4SLinus Torvalds 239be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 240f98ca311STaku Izumi __func__, slot_name(slot)); 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds retval = slot->hpc_ops->get_attention_status(slot, value); 2431da177e4SLinus Torvalds if (retval < 0) 2441da177e4SLinus Torvalds *value = hotplug_slot->info->attention_status; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds return 0; 2471da177e4SLinus Torvalds } 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value) 2501da177e4SLinus Torvalds { 2518352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 2521da177e4SLinus Torvalds int retval; 2531da177e4SLinus Torvalds 254be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 255f98ca311STaku Izumi __func__, slot_name(slot)); 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds retval = slot->hpc_ops->get_latch_status(slot, value); 2581da177e4SLinus Torvalds if (retval < 0) 2591da177e4SLinus Torvalds *value = hotplug_slot->info->latch_status; 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds return 0; 2621da177e4SLinus Torvalds } 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value) 2651da177e4SLinus Torvalds { 2668352e04eSKenji Kaneshige struct slot *slot = get_slot(hotplug_slot); 2671da177e4SLinus Torvalds int retval; 2681da177e4SLinus Torvalds 269be7bce25STaku Izumi ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", 270f98ca311STaku Izumi __func__, slot_name(slot)); 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds retval = slot->hpc_ops->get_adapter_status(slot, value); 2731da177e4SLinus Torvalds if (retval < 0) 2741da177e4SLinus Torvalds *value = hotplug_slot->info->adapter_status; 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds return 0; 2771da177e4SLinus Torvalds } 2781da177e4SLinus Torvalds 2791410dc1cSrajesh.shah@intel.com static int is_shpc_capable(struct pci_dev *dev) 2801410dc1cSrajesh.shah@intel.com { 2811410dc1cSrajesh.shah@intel.com if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device == 2821410dc1cSrajesh.shah@intel.com PCI_DEVICE_ID_AMD_GOLAM_7450)) 2831410dc1cSrajesh.shah@intel.com return 1; 284ac9c052dSKenji Kaneshige if (!pci_find_capability(dev, PCI_CAP_ID_SHPC)) 2851410dc1cSrajesh.shah@intel.com return 0; 286ac9c052dSKenji Kaneshige if (get_hp_hw_control_from_firmware(dev)) 287ac9c052dSKenji Kaneshige return 0; 288ac9c052dSKenji Kaneshige return 1; 2891410dc1cSrajesh.shah@intel.com } 2901410dc1cSrajesh.shah@intel.com 2911da177e4SLinus Torvalds static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2921da177e4SLinus Torvalds { 2931da177e4SLinus Torvalds int rc; 2941da177e4SLinus Torvalds struct controller *ctrl; 2951da177e4SLinus Torvalds 2961410dc1cSrajesh.shah@intel.com if (!is_shpc_capable(pdev)) 2971410dc1cSrajesh.shah@intel.com return -ENODEV; 2981410dc1cSrajesh.shah@intel.com 29957c95c0dSKenji Kaneshige ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); 3001da177e4SLinus Torvalds if (!ctrl) { 301be7bce25STaku Izumi dev_err(&pdev->dev, "%s: Out of memory\n", __func__); 3021da177e4SLinus Torvalds goto err_out_none; 3031da177e4SLinus Torvalds } 3045b1a960dSKenji Kaneshige INIT_LIST_HEAD(&ctrl->slot_list); 3051da177e4SLinus Torvalds 306ee138334Srajesh.shah@intel.com rc = shpc_init(ctrl, pdev); 3071da177e4SLinus Torvalds if (rc) { 308be7bce25STaku Izumi ctrl_dbg(ctrl, "Controller initialization failed\n"); 3091da177e4SLinus Torvalds goto err_out_free_ctrl; 3101da177e4SLinus Torvalds } 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds pci_set_drvdata(pdev, ctrl); 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds /* Setup the slot information structures */ 3151da177e4SLinus Torvalds rc = init_slots(ctrl); 3161da177e4SLinus Torvalds if (rc) { 317be7bce25STaku Izumi ctrl_err(ctrl, "Slot initialization failed\n"); 318f7391f53SKenji Kaneshige goto err_out_release_ctlr; 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds 321e1b95dc6SGreg Kroah-Hartman rc = shpchp_create_ctrl_files(ctrl); 322e1b95dc6SGreg Kroah-Hartman if (rc) 323e1b95dc6SGreg Kroah-Hartman goto err_cleanup_slots; 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds return 0; 3261da177e4SLinus Torvalds 327e1b95dc6SGreg Kroah-Hartman err_cleanup_slots: 328e1b95dc6SGreg Kroah-Hartman cleanup_slots(ctrl); 329f7391f53SKenji Kaneshige err_out_release_ctlr: 3301da177e4SLinus Torvalds ctrl->hpc_ops->release_ctlr(ctrl); 3311da177e4SLinus Torvalds err_out_free_ctrl: 3321da177e4SLinus Torvalds kfree(ctrl); 3331da177e4SLinus Torvalds err_out_none: 3341da177e4SLinus Torvalds return -ENODEV; 3351da177e4SLinus Torvalds } 3361da177e4SLinus Torvalds 337e6b82b13SKenji Kaneshige static void shpc_remove(struct pci_dev *dev) 3381da177e4SLinus Torvalds { 339e6b82b13SKenji Kaneshige struct controller *ctrl = pci_get_drvdata(dev); 3401da177e4SLinus Torvalds 341c2608a11Srajesh.shah@intel.com shpchp_remove_ctrl_files(ctrl); 3421da177e4SLinus Torvalds ctrl->hpc_ops->release_ctlr(ctrl); 343a4534560SKenji Kaneshige kfree(ctrl); 3441da177e4SLinus Torvalds } 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds static struct pci_device_id shpcd_pci_tbl[] = { 347dfcd5f68SKenji Kaneshige {PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)}, 3481da177e4SLinus Torvalds { /* end: all zeroes */ } 3491da177e4SLinus Torvalds }; 3501da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl); 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvalds static struct pci_driver shpc_driver = { 3531da177e4SLinus Torvalds .name = SHPC_MODULE_NAME, 3541da177e4SLinus Torvalds .id_table = shpcd_pci_tbl, 3551da177e4SLinus Torvalds .probe = shpc_probe, 356e6b82b13SKenji Kaneshige .remove = shpc_remove, 3571da177e4SLinus Torvalds }; 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds static int __init shpcd_init(void) 3601da177e4SLinus Torvalds { 3611da177e4SLinus Torvalds int retval = 0; 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds retval = pci_register_driver(&shpc_driver); 36466bef8c0SHarvey Harrison dbg("%s: pci_register_driver = %d\n", __func__, retval); 3651da177e4SLinus Torvalds info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); 3661da177e4SLinus Torvalds return retval; 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds static void __exit shpcd_cleanup(void) 3701da177e4SLinus Torvalds { 3711da177e4SLinus Torvalds dbg("unload_shpchpd()\n"); 3721da177e4SLinus Torvalds pci_unregister_driver(&shpc_driver); 3731da177e4SLinus Torvalds info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); 3741da177e4SLinus Torvalds } 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds module_init(shpcd_init); 3771da177e4SLinus Torvalds module_exit(shpcd_cleanup); 378