Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Kristen Accardi | 8cf4c19 | 2005-08-16 15:16:10 -0700 | [diff] [blame] | 26 | * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * |
| 28 | */ |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/module.h> |
| 31 | #include <linux/moduleparam.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame^] | 34 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/pci.h> |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 36 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include "shpchp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | /* Global variables */ |
| 40 | int shpchp_debug; |
| 41 | int shpchp_poll_mode; |
| 42 | int shpchp_poll_time; |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 43 | struct workqueue_struct *shpchp_wq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | #define DRIVER_VERSION "0.4" |
| 46 | #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>" |
| 47 | #define DRIVER_DESC "Standard Hot Plug PCI Controller Driver" |
| 48 | |
| 49 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 50 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 51 | MODULE_LICENSE("GPL"); |
| 52 | |
| 53 | module_param(shpchp_debug, bool, 0644); |
| 54 | module_param(shpchp_poll_mode, bool, 0644); |
| 55 | module_param(shpchp_poll_time, int, 0644); |
| 56 | MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not"); |
| 57 | MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not"); |
| 58 | MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds"); |
| 59 | |
| 60 | #define SHPC_MODULE_NAME "shpchp" |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | static int set_attention_status (struct hotplug_slot *slot, u8 value); |
| 63 | static int enable_slot (struct hotplug_slot *slot); |
| 64 | static int disable_slot (struct hotplug_slot *slot); |
| 65 | static int get_power_status (struct hotplug_slot *slot, u8 *value); |
| 66 | static int get_attention_status (struct hotplug_slot *slot, u8 *value); |
| 67 | static int get_latch_status (struct hotplug_slot *slot, u8 *value); |
| 68 | static int get_adapter_status (struct hotplug_slot *slot, u8 *value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | static struct hotplug_slot_ops shpchp_hotplug_slot_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | .set_attention_status = set_attention_status, |
| 72 | .enable_slot = enable_slot, |
| 73 | .disable_slot = disable_slot, |
| 74 | .get_power_status = get_power_status, |
| 75 | .get_attention_status = get_attention_status, |
| 76 | .get_latch_status = get_latch_status, |
| 77 | .get_adapter_status = get_adapter_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | /** |
| 81 | * release_slot - free up the memory used by a slot |
| 82 | * @hotplug_slot: slot to free |
| 83 | */ |
| 84 | static void release_slot(struct hotplug_slot *hotplug_slot) |
| 85 | { |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 86 | struct slot *slot = hotplug_slot->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 88 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 89 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
| 91 | kfree(slot->hotplug_slot->info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | kfree(slot->hotplug_slot); |
| 93 | kfree(slot); |
| 94 | } |
| 95 | |
| 96 | static int init_slots(struct controller *ctrl) |
| 97 | { |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 98 | struct slot *slot; |
| 99 | struct hotplug_slot *hotplug_slot; |
| 100 | struct hotplug_slot_info *info; |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 101 | char name[SLOT_NAME_SIZE]; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 102 | int retval = -ENOMEM; |
Alex Chiang | 5fe6cc6 | 2008-10-20 17:41:02 -0600 | [diff] [blame] | 103 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 105 | for (i = 0; i < ctrl->num_slots; i++) { |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 106 | slot = kzalloc(sizeof(*slot), GFP_KERNEL); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 107 | if (!slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | goto error; |
| 109 | |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 110 | hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 111 | if (!hotplug_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | goto error_slot; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 113 | slot->hotplug_slot = hotplug_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 115 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 116 | if (!info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | goto error_hpslot; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 118 | hotplug_slot->info = info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 120 | slot->hp_slot = i; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 121 | slot->ctrl = ctrl; |
Kenji Kaneshige | 227b84c | 2006-12-16 15:25:42 -0800 | [diff] [blame] | 122 | slot->bus = ctrl->pci_dev->subordinate->number; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 123 | slot->device = ctrl->slot_device_offset + i; |
| 124 | slot->hpc_ops = ctrl->hpc_ops; |
Kenji Kaneshige | 6f39be2 | 2006-12-16 15:25:49 -0800 | [diff] [blame] | 125 | slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i); |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 126 | mutex_init(&slot->lock); |
Kristen Carlson Accardi | e325e1f | 2007-03-21 11:45:31 -0700 | [diff] [blame] | 127 | INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | /* register this slot with the hotplug pci core */ |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 130 | hotplug_slot->private = slot; |
| 131 | hotplug_slot->release = &release_slot; |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 132 | snprintf(name, SLOT_NAME_SIZE, "%d", slot->number); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 133 | hotplug_slot->ops = &shpchp_hotplug_slot_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 135 | ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x " |
| 136 | "hp_slot=%x sun=%x slot_device_offset=%x\n", |
| 137 | pci_domain_nr(ctrl->pci_dev->subordinate), |
| 138 | slot->bus, slot->device, slot->hp_slot, slot->number, |
| 139 | ctrl->slot_device_offset); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 140 | retval = pci_hp_register(slot->hotplug_slot, |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 141 | ctrl->pci_dev->subordinate, slot->device, name); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 142 | if (retval) { |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 143 | ctrl_err(ctrl, "pci_hp_register failed with error %d\n", |
| 144 | retval); |
Kenji Kaneshige | bbe779d | 2006-01-26 10:04:56 +0900 | [diff] [blame] | 145 | goto error_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | } |
| 147 | |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 148 | get_power_status(hotplug_slot, &info->power_status); |
| 149 | get_attention_status(hotplug_slot, &info->attention_status); |
| 150 | get_latch_status(hotplug_slot, &info->latch_status); |
| 151 | get_adapter_status(hotplug_slot, &info->adapter_status); |
| 152 | |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 153 | list_add(&slot->slot_list, &ctrl->slot_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | error_info: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 158 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | error_hpslot: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 160 | kfree(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | error_slot: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 162 | kfree(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | error: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 164 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
| 166 | |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 167 | void cleanup_slots(struct controller *ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | { |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 169 | struct list_head *tmp; |
| 170 | struct list_head *next; |
| 171 | struct slot *slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 173 | list_for_each_safe(tmp, next, &ctrl->slot_list) { |
| 174 | slot = list_entry(tmp, struct slot, slot_list); |
| 175 | list_del(&slot->slot_list); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 176 | cancel_delayed_work(&slot->work); |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 177 | flush_scheduled_work(); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 178 | flush_workqueue(shpchp_wq); |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 179 | pci_hp_deregister(slot->hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | } |
| 181 | } |
| 182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | /* |
| 184 | * set_attention_status - Turns the Amber LED for a slot on, off or blink |
| 185 | */ |
| 186 | static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) |
| 187 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 188 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 190 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 191 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
| 193 | hotplug_slot->info->attention_status = status; |
| 194 | slot->hpc_ops->set_attention_status(slot, status); |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | static int enable_slot (struct hotplug_slot *hotplug_slot) |
| 200 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 201 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 203 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 204 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 206 | return shpchp_sysfs_enable_slot(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | } |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | static int disable_slot (struct hotplug_slot *hotplug_slot) |
| 210 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 211 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 213 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 214 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 216 | return shpchp_sysfs_disable_slot(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value) |
| 220 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 221 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | int retval; |
| 223 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 224 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 225 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | retval = slot->hpc_ops->get_power_status(slot, value); |
| 228 | if (retval < 0) |
| 229 | *value = hotplug_slot->info->power_status; |
| 230 | |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value) |
| 235 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 236 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | int retval; |
| 238 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 239 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 240 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
| 242 | retval = slot->hpc_ops->get_attention_status(slot, value); |
| 243 | if (retval < 0) |
| 244 | *value = hotplug_slot->info->attention_status; |
| 245 | |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value) |
| 250 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 251 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | int retval; |
| 253 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 254 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 255 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | retval = slot->hpc_ops->get_latch_status(slot, value); |
| 258 | if (retval < 0) |
| 259 | *value = hotplug_slot->info->latch_status; |
| 260 | |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value) |
| 265 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 266 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | int retval; |
| 268 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 269 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 270 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | retval = slot->hpc_ops->get_adapter_status(slot, value); |
| 273 | if (retval < 0) |
| 274 | *value = hotplug_slot->info->adapter_status; |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
rajesh.shah@intel.com | 1410dc1 | 2005-10-13 12:05:39 -0700 | [diff] [blame] | 279 | static int is_shpc_capable(struct pci_dev *dev) |
| 280 | { |
Kenji Kaneshige | ac9c052 | 2008-05-28 15:01:03 +0900 | [diff] [blame] | 281 | if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device == |
| 282 | PCI_DEVICE_ID_AMD_GOLAM_7450)) |
| 283 | return 1; |
| 284 | if (!pci_find_capability(dev, PCI_CAP_ID_SHPC)) |
| 285 | return 0; |
| 286 | if (get_hp_hw_control_from_firmware(dev)) |
| 287 | return 0; |
| 288 | return 1; |
rajesh.shah@intel.com | 1410dc1 | 2005-10-13 12:05:39 -0700 | [diff] [blame] | 289 | } |
| 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 292 | { |
| 293 | int rc; |
| 294 | struct controller *ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | |
rajesh.shah@intel.com | 1410dc1 | 2005-10-13 12:05:39 -0700 | [diff] [blame] | 296 | if (!is_shpc_capable(pdev)) |
| 297 | return -ENODEV; |
| 298 | |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 299 | ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | if (!ctrl) { |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 301 | dev_err(&pdev->dev, "%s: Out of memory\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | goto err_out_none; |
| 303 | } |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 304 | INIT_LIST_HEAD(&ctrl->slot_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
rajesh.shah@intel.com | ee13833 | 2005-10-13 12:05:42 -0700 | [diff] [blame] | 306 | rc = shpc_init(ctrl, pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | if (rc) { |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 308 | ctrl_dbg(ctrl, "Controller initialization failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | goto err_out_free_ctrl; |
| 310 | } |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | pci_set_drvdata(pdev, ctrl); |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | /* Setup the slot information structures */ |
| 315 | rc = init_slots(ctrl); |
| 316 | if (rc) { |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 317 | ctrl_err(ctrl, "Slot initialization failed\n"); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 318 | goto err_out_release_ctlr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Greg Kroah-Hartman | e1b95dc | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 321 | rc = shpchp_create_ctrl_files(ctrl); |
| 322 | if (rc) |
| 323 | goto err_cleanup_slots; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
| 325 | return 0; |
| 326 | |
Greg Kroah-Hartman | e1b95dc | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 327 | err_cleanup_slots: |
| 328 | cleanup_slots(ctrl); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 329 | err_out_release_ctlr: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | ctrl->hpc_ops->release_ctlr(ctrl); |
| 331 | err_out_free_ctrl: |
| 332 | kfree(ctrl); |
| 333 | err_out_none: |
| 334 | return -ENODEV; |
| 335 | } |
| 336 | |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 337 | static void shpc_remove(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | { |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 339 | struct controller *ctrl = pci_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 341 | shpchp_remove_ctrl_files(ctrl); |
| 342 | ctrl->hpc_ops->release_ctlr(ctrl); |
| 343 | kfree(ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | } |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | static struct pci_device_id shpcd_pci_tbl[] = { |
Kenji Kaneshige | dfcd5f6 | 2006-01-26 09:56:53 +0900 | [diff] [blame] | 347 | {PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | { /* end: all zeroes */ } |
| 349 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl); |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | static struct pci_driver shpc_driver = { |
| 353 | .name = SHPC_MODULE_NAME, |
| 354 | .id_table = shpcd_pci_tbl, |
| 355 | .probe = shpc_probe, |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 356 | .remove = shpc_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | }; |
| 358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | static int __init shpcd_init(void) |
| 360 | { |
| 361 | int retval = 0; |
| 362 | |
rajesh.shah@intel.com | 424600f | 2005-10-13 12:05:38 -0700 | [diff] [blame] | 363 | retval = pci_register_driver(&shpc_driver); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 364 | dbg("%s: pci_register_driver = %d\n", __func__, retval); |
rajesh.shah@intel.com | 424600f | 2005-10-13 12:05:38 -0700 | [diff] [blame] | 365 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | return retval; |
| 367 | } |
| 368 | |
| 369 | static void __exit shpcd_cleanup(void) |
| 370 | { |
| 371 | dbg("unload_shpchpd()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | pci_unregister_driver(&shpc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); |
| 374 | } |
| 375 | |
| 376 | module_init(shpcd_init); |
| 377 | module_exit(shpcd_cleanup); |