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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "shpchp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
| 38 | /* Global variables */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 39 | bool shpchp_debug; |
| 40 | bool shpchp_poll_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | int shpchp_poll_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #define DRIVER_VERSION "0.4" |
| 44 | #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>" |
| 45 | #define DRIVER_DESC "Standard Hot Plug PCI Controller Driver" |
| 46 | |
| 47 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 48 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 49 | MODULE_LICENSE("GPL"); |
| 50 | |
| 51 | module_param(shpchp_debug, bool, 0644); |
| 52 | module_param(shpchp_poll_mode, bool, 0644); |
| 53 | module_param(shpchp_poll_time, int, 0644); |
| 54 | MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not"); |
| 55 | MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not"); |
| 56 | MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds"); |
| 57 | |
| 58 | #define SHPC_MODULE_NAME "shpchp" |
| 59 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 60 | static int set_attention_status(struct hotplug_slot *slot, u8 value); |
| 61 | static int enable_slot(struct hotplug_slot *slot); |
| 62 | static int disable_slot(struct hotplug_slot *slot); |
| 63 | static int get_power_status(struct hotplug_slot *slot, u8 *value); |
| 64 | static int get_attention_status(struct hotplug_slot *slot, u8 *value); |
| 65 | static int get_latch_status(struct hotplug_slot *slot, u8 *value); |
| 66 | static int get_adapter_status(struct hotplug_slot *slot, u8 *value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | static struct hotplug_slot_ops shpchp_hotplug_slot_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | .set_attention_status = set_attention_status, |
| 70 | .enable_slot = enable_slot, |
| 71 | .disable_slot = disable_slot, |
| 72 | .get_power_status = get_power_status, |
| 73 | .get_attention_status = get_attention_status, |
| 74 | .get_latch_status = get_latch_status, |
| 75 | .get_adapter_status = get_adapter_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | }; |
| 77 | |
| 78 | /** |
| 79 | * release_slot - free up the memory used by a slot |
| 80 | * @hotplug_slot: slot to free |
| 81 | */ |
| 82 | static void release_slot(struct hotplug_slot *hotplug_slot) |
| 83 | { |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 84 | struct slot *slot = hotplug_slot->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 86 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 87 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | kfree(slot->hotplug_slot->info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | kfree(slot->hotplug_slot); |
| 91 | kfree(slot); |
| 92 | } |
| 93 | |
| 94 | static int init_slots(struct controller *ctrl) |
| 95 | { |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 96 | struct slot *slot; |
| 97 | struct hotplug_slot *hotplug_slot; |
| 98 | struct hotplug_slot_info *info; |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 99 | char name[SLOT_NAME_SIZE]; |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 100 | int retval; |
Alex Chiang | 5fe6cc6 | 2008-10-20 17:41:02 -0600 | [diff] [blame] | 101 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 103 | for (i = 0; i < ctrl->num_slots; i++) { |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 104 | slot = kzalloc(sizeof(*slot), GFP_KERNEL); |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 105 | if (!slot) { |
| 106 | retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | goto error; |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 108 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 110 | hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL); |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 111 | if (!hotplug_slot) { |
| 112 | retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | goto error_slot; |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 114 | } |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 115 | slot->hotplug_slot = hotplug_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 117 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 118 | if (!info) { |
| 119 | retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | goto error_hpslot; |
Julia Lawall | 83d0571 | 2012-07-16 09:25:56 -0600 | [diff] [blame] | 121 | } |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 122 | hotplug_slot->info = info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 124 | slot->hp_slot = i; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 125 | slot->ctrl = ctrl; |
Kenji Kaneshige | 227b84c | 2006-12-16 15:25:42 -0800 | [diff] [blame] | 126 | slot->bus = ctrl->pci_dev->subordinate->number; |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 127 | slot->device = ctrl->slot_device_offset + i; |
| 128 | slot->hpc_ops = ctrl->hpc_ops; |
Kenji Kaneshige | 6f39be2 | 2006-12-16 15:25:49 -0800 | [diff] [blame] | 129 | slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i); |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 130 | |
Kees Cook | d853754 | 2013-07-03 15:04:57 -0700 | [diff] [blame] | 131 | slot->wq = alloc_workqueue("shpchp-%d", 0, 0, slot->number); |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 132 | if (!slot->wq) { |
| 133 | retval = -ENOMEM; |
| 134 | goto error_info; |
| 135 | } |
| 136 | |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 137 | mutex_init(&slot->lock); |
Kristen Carlson Accardi | e325e1f | 2007-03-21 11:45:31 -0700 | [diff] [blame] | 138 | INIT_DELAYED_WORK(&slot->work, shpchp_queue_pushbutton_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
| 140 | /* register this slot with the hotplug pci core */ |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 141 | hotplug_slot->private = slot; |
| 142 | hotplug_slot->release = &release_slot; |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 143 | snprintf(name, SLOT_NAME_SIZE, "%d", slot->number); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 144 | hotplug_slot->ops = &shpchp_hotplug_slot_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 146 | ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x hp_slot=%x sun=%x slot_device_offset=%x\n", |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 147 | pci_domain_nr(ctrl->pci_dev->subordinate), |
| 148 | slot->bus, slot->device, slot->hp_slot, slot->number, |
| 149 | ctrl->slot_device_offset); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 150 | retval = pci_hp_register(slot->hotplug_slot, |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 151 | ctrl->pci_dev->subordinate, slot->device, name); |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 152 | if (retval) { |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 153 | ctrl_err(ctrl, "pci_hp_register failed with error %d\n", |
| 154 | retval); |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 155 | goto error_slotwq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | } |
| 157 | |
Alex Chiang | 66f1705 | 2008-10-20 17:41:53 -0600 | [diff] [blame] | 158 | get_power_status(hotplug_slot, &info->power_status); |
| 159 | get_attention_status(hotplug_slot, &info->attention_status); |
| 160 | get_latch_status(hotplug_slot, &info->latch_status); |
| 161 | get_adapter_status(hotplug_slot, &info->adapter_status); |
| 162 | |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 163 | list_add(&slot->slot_list, &ctrl->slot_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | return 0; |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 167 | error_slotwq: |
| 168 | destroy_workqueue(slot->wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | error_info: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 170 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | error_hpslot: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 172 | kfree(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | error_slot: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 174 | kfree(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | error: |
Kenji Kaneshige | 926030f | 2006-01-26 09:55:35 +0900 | [diff] [blame] | 176 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | } |
| 178 | |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 179 | void cleanup_slots(struct controller *ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
Geliang Tang | 2ac83cc | 2015-12-12 21:36:57 +0800 | [diff] [blame] | 181 | struct slot *slot, *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Geliang Tang | 2ac83cc | 2015-12-12 21:36:57 +0800 | [diff] [blame] | 183 | list_for_each_entry_safe(slot, next, &ctrl->slot_list, slot_list) { |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 184 | list_del(&slot->slot_list); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 185 | cancel_delayed_work(&slot->work); |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 186 | destroy_workqueue(slot->wq); |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 187 | pci_hp_deregister(slot->hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | } |
| 189 | } |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | /* |
| 192 | * set_attention_status - Turns the Amber LED for a slot on, off or blink |
| 193 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 194 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 196 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 198 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 199 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
| 201 | hotplug_slot->info->attention_status = status; |
| 202 | slot->hpc_ops->set_attention_status(slot, status); |
| 203 | |
| 204 | return 0; |
| 205 | } |
| 206 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 207 | static int enable_slot(struct hotplug_slot *hotplug_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 209 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 211 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 212 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 214 | return shpchp_sysfs_enable_slot(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | } |
| 216 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 217 | static int disable_slot(struct hotplug_slot *hotplug_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 219 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 221 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 222 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
Kenji Kaneshige | a246fa4 | 2006-02-21 15:45:48 -0800 | [diff] [blame] | 224 | return shpchp_sysfs_disable_slot(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 227 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 229 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | int retval; |
| 231 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 232 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 233 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
| 235 | retval = slot->hpc_ops->get_power_status(slot, value); |
| 236 | if (retval < 0) |
| 237 | *value = hotplug_slot->info->power_status; |
| 238 | |
| 239 | return 0; |
| 240 | } |
| 241 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 242 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 244 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | int retval; |
| 246 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 247 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 248 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | retval = slot->hpc_ops->get_attention_status(slot, value); |
| 251 | if (retval < 0) |
| 252 | *value = hotplug_slot->info->attention_status; |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 257 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 259 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | int retval; |
| 261 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 262 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 263 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | retval = slot->hpc_ops->get_latch_status(slot, value); |
| 266 | if (retval < 0) |
| 267 | *value = hotplug_slot->info->latch_status; |
| 268 | |
| 269 | return 0; |
| 270 | } |
| 271 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 272 | static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
Kenji Kaneshige | 8352e04 | 2006-12-16 15:25:57 -0800 | [diff] [blame] | 274 | struct slot *slot = get_slot(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | int retval; |
| 276 | |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 277 | ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n", |
Taku Izumi | f98ca31 | 2008-10-23 11:52:12 +0900 | [diff] [blame] | 278 | __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
| 280 | retval = slot->hpc_ops->get_adapter_status(slot, value); |
| 281 | if (retval < 0) |
| 282 | *value = hotplug_slot->info->adapter_status; |
| 283 | |
| 284 | return 0; |
| 285 | } |
| 286 | |
rajesh.shah@intel.com | 1410dc1 | 2005-10-13 12:05:39 -0700 | [diff] [blame] | 287 | static int is_shpc_capable(struct pci_dev *dev) |
| 288 | { |
Bjorn Helgaas | 4cac2eb | 2011-08-23 10:16:43 -0600 | [diff] [blame] | 289 | if (dev->vendor == PCI_VENDOR_ID_AMD && |
| 290 | dev->device == PCI_DEVICE_ID_AMD_GOLAM_7450) |
Kenji Kaneshige | ac9c052 | 2008-05-28 15:01:03 +0900 | [diff] [blame] | 291 | return 1; |
| 292 | if (!pci_find_capability(dev, PCI_CAP_ID_SHPC)) |
| 293 | return 0; |
| 294 | if (get_hp_hw_control_from_firmware(dev)) |
| 295 | return 0; |
| 296 | return 1; |
rajesh.shah@intel.com | 1410dc1 | 2005-10-13 12:05:39 -0700 | [diff] [blame] | 297 | } |
| 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 300 | { |
| 301 | int rc; |
| 302 | struct controller *ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
rajesh.shah@intel.com | 1410dc1 | 2005-10-13 12:05:39 -0700 | [diff] [blame] | 304 | if (!is_shpc_capable(pdev)) |
| 305 | return -ENODEV; |
| 306 | |
Kenji Kaneshige | 57c95c0 | 2006-01-26 10:02:41 +0900 | [diff] [blame] | 307 | ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | if (!ctrl) { |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 309 | dev_err(&pdev->dev, "%s: Out of memory\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | goto err_out_none; |
| 311 | } |
Kenji Kaneshige | 5b1a960 | 2006-01-26 09:57:40 +0900 | [diff] [blame] | 312 | INIT_LIST_HEAD(&ctrl->slot_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
rajesh.shah@intel.com | ee13833 | 2005-10-13 12:05:42 -0700 | [diff] [blame] | 314 | rc = shpc_init(ctrl, pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | if (rc) { |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 316 | ctrl_dbg(ctrl, "Controller initialization failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | goto err_out_free_ctrl; |
| 318 | } |
| 319 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | pci_set_drvdata(pdev, ctrl); |
| 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | /* Setup the slot information structures */ |
| 323 | rc = init_slots(ctrl); |
| 324 | if (rc) { |
Taku Izumi | be7bce2 | 2008-10-23 11:54:39 +0900 | [diff] [blame] | 325 | ctrl_err(ctrl, "Slot initialization failed\n"); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 326 | goto err_out_release_ctlr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
Greg Kroah-Hartman | e1b95dc | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 329 | rc = shpchp_create_ctrl_files(ctrl); |
| 330 | if (rc) |
| 331 | goto err_cleanup_slots; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
| 333 | return 0; |
| 334 | |
Greg Kroah-Hartman | e1b95dc | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 335 | err_cleanup_slots: |
| 336 | cleanup_slots(ctrl); |
Kenji Kaneshige | f7391f5 | 2006-02-21 15:45:45 -0800 | [diff] [blame] | 337 | err_out_release_ctlr: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | ctrl->hpc_ops->release_ctlr(ctrl); |
| 339 | err_out_free_ctrl: |
| 340 | kfree(ctrl); |
| 341 | err_out_none: |
| 342 | return -ENODEV; |
| 343 | } |
| 344 | |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 345 | static void shpc_remove(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 347 | struct controller *ctrl = pci_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 349 | shpchp_remove_ctrl_files(ctrl); |
| 350 | ctrl->hpc_ops->release_ctlr(ctrl); |
| 351 | kfree(ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | static struct pci_device_id shpcd_pci_tbl[] = { |
Kenji Kaneshige | dfcd5f6 | 2006-01-26 09:56:53 +0900 | [diff] [blame] | 355 | {PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | { /* end: all zeroes */ } |
| 357 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl); |
| 359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | static struct pci_driver shpc_driver = { |
| 361 | .name = SHPC_MODULE_NAME, |
| 362 | .id_table = shpcd_pci_tbl, |
| 363 | .probe = shpc_probe, |
Kenji Kaneshige | e6b82b13 | 2006-02-21 15:45:50 -0800 | [diff] [blame] | 364 | .remove = shpc_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | }; |
| 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | static int __init shpcd_init(void) |
| 368 | { |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 369 | int retval; |
Tejun Heo | e24dcbe | 2010-10-18 08:33:02 +0200 | [diff] [blame] | 370 | |
rajesh.shah@intel.com | 424600f | 2005-10-13 12:05:38 -0700 | [diff] [blame] | 371 | retval = pci_register_driver(&shpc_driver); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 372 | dbg("%s: pci_register_driver = %d\n", __func__, retval); |
rajesh.shah@intel.com | 424600f | 2005-10-13 12:05:38 -0700 | [diff] [blame] | 373 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); |
Bjorn Helgaas | f652e7d | 2013-01-11 12:21:15 -0700 | [diff] [blame] | 374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | return retval; |
| 376 | } |
| 377 | |
| 378 | static void __exit shpcd_cleanup(void) |
| 379 | { |
| 380 | dbg("unload_shpchpd()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | pci_unregister_driver(&shpc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n"); |
| 383 | } |
| 384 | |
| 385 | module_init(shpcd_init); |
| 386 | module_exit(shpcd_cleanup); |