Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PCI HotPlug Controller Core |
| 3 | * |
| 4 | * Copyright (C) 2001-2002 Greg Kroah-Hartman (greg@kroah.com) |
| 5 | * Copyright (C) 2001-2002 IBM Corp. |
| 6 | * |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or (at |
| 12 | * your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 17 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 18 | * details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | * |
Kristen Carlson Accardi | fb5f4d7 | 2006-09-29 10:30:27 -0700 | [diff] [blame] | 24 | * Send feedback to <kristen.c.accardi@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | * |
| 26 | */ |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | #include <linux/moduleparam.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/list.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 33 | #include <linux/kobject.h> |
| 34 | #include <linux/sysfs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/pagemap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/init.h> |
| 37 | #include <linux/mount.h> |
| 38 | #include <linux/namei.h> |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 39 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/pci.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 41 | #include <linux/pci_hotplug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <asm/uaccess.h> |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 43 | #include "../pci.h" |
Bjorn Helgaas | c3139ba | 2013-04-15 10:44:18 -0600 | [diff] [blame] | 44 | #include "cpci_hotplug.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #define MY_NAME "pci_hotplug" |
| 47 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 48 | #define dbg(fmt, arg...) do { if (debug) printk(KERN_DEBUG "%s: %s: " fmt, MY_NAME, __func__, ## arg); } while (0) |
| 49 | #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg) |
| 50 | #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg) |
| 51 | #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | |
| 54 | /* local variables */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 55 | static bool debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | #define DRIVER_VERSION "0.5" |
| 58 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Scott Murray <scottm@somanetworks.com>" |
| 59 | #define DRIVER_DESC "PCI Hot Plug PCI Core" |
| 60 | |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | static LIST_HEAD(pci_hotplug_slot_list); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 63 | static DEFINE_MUTEX(pci_hp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | /* Weee, fun with macros... */ |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 66 | #define GET_STATUS(name, type) \ |
| 67 | static int get_##name(struct hotplug_slot *slot, type *value) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | { \ |
| 69 | struct hotplug_slot_ops *ops = slot->ops; \ |
| 70 | int retval = 0; \ |
Kenji Kaneshige | bd1d985 | 2008-09-29 17:37:05 +0900 | [diff] [blame] | 71 | if (!try_module_get(ops->owner)) \ |
Zhao, Yu | c8761fe | 2008-09-22 14:26:05 +0800 | [diff] [blame] | 72 | return -ENODEV; \ |
| 73 | if (ops->get_##name) \ |
| 74 | retval = ops->get_##name(slot, value); \ |
| 75 | else \ |
| 76 | *value = slot->info->name; \ |
| 77 | module_put(ops->owner); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | return retval; \ |
| 79 | } |
| 80 | |
| 81 | GET_STATUS(power_status, u8) |
| 82 | GET_STATUS(attention_status, u8) |
| 83 | GET_STATUS(latch_status, u8) |
| 84 | GET_STATUS(adapter_status, u8) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 86 | static ssize_t power_read_file(struct pci_slot *pci_slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | { |
| 88 | int retval; |
| 89 | u8 value; |
| 90 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 91 | retval = get_power_status(pci_slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | if (retval) |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 93 | return retval; |
| 94 | |
| 95 | return sprintf(buf, "%d\n", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | } |
| 97 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 98 | static ssize_t power_write_file(struct pci_slot *pci_slot, const char *buf, |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 99 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 101 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | unsigned long lpower; |
| 103 | u8 power; |
| 104 | int retval = 0; |
| 105 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 106 | lpower = simple_strtoul(buf, NULL, 10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | power = (u8)(lpower & 0xff); |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 108 | dbg("power = %d\n", power); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
| 110 | if (!try_module_get(slot->ops->owner)) { |
| 111 | retval = -ENODEV; |
| 112 | goto exit; |
| 113 | } |
| 114 | switch (power) { |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 115 | case 0: |
| 116 | if (slot->ops->disable_slot) |
| 117 | retval = slot->ops->disable_slot(slot); |
| 118 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 120 | case 1: |
| 121 | if (slot->ops->enable_slot) |
| 122 | retval = slot->ops->enable_slot(slot); |
| 123 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 125 | default: |
| 126 | err("Illegal value specified for power\n"); |
| 127 | retval = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | } |
| 129 | module_put(slot->ops->owner); |
| 130 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 131 | exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | if (retval) |
| 133 | return retval; |
| 134 | return count; |
| 135 | } |
| 136 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 137 | static struct pci_slot_attribute hotplug_slot_attr_power = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | .attr = {.name = "power", .mode = S_IFREG | S_IRUGO | S_IWUSR}, |
| 139 | .show = power_read_file, |
| 140 | .store = power_write_file |
| 141 | }; |
| 142 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 143 | static ssize_t attention_read_file(struct pci_slot *pci_slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | { |
| 145 | int retval; |
| 146 | u8 value; |
| 147 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 148 | retval = get_attention_status(pci_slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | if (retval) |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 150 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 152 | return sprintf(buf, "%d\n", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } |
| 154 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 155 | static ssize_t attention_write_file(struct pci_slot *pci_slot, const char *buf, |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 156 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | { |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 158 | struct hotplug_slot_ops *ops = pci_slot->hotplug->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | unsigned long lattention; |
| 160 | u8 attention; |
| 161 | int retval = 0; |
| 162 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 163 | lattention = simple_strtoul(buf, NULL, 10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | attention = (u8)(lattention & 0xff); |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 165 | dbg(" - attention = %d\n", attention); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 167 | if (!try_module_get(ops->owner)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | retval = -ENODEV; |
| 169 | goto exit; |
| 170 | } |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 171 | if (ops->set_attention_status) |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 172 | retval = ops->set_attention_status(pci_slot->hotplug, attention); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 173 | module_put(ops->owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 175 | exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | if (retval) |
| 177 | return retval; |
| 178 | return count; |
| 179 | } |
| 180 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 181 | static struct pci_slot_attribute hotplug_slot_attr_attention = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | .attr = {.name = "attention", .mode = S_IFREG | S_IRUGO | S_IWUSR}, |
| 183 | .show = attention_read_file, |
| 184 | .store = attention_write_file |
| 185 | }; |
| 186 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 187 | static ssize_t latch_read_file(struct pci_slot *pci_slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | { |
| 189 | int retval; |
| 190 | u8 value; |
| 191 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 192 | retval = get_latch_status(pci_slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | if (retval) |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 194 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 196 | return sprintf(buf, "%d\n", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 199 | static struct pci_slot_attribute hotplug_slot_attr_latch = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | .attr = {.name = "latch", .mode = S_IFREG | S_IRUGO}, |
| 201 | .show = latch_read_file, |
| 202 | }; |
| 203 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 204 | static ssize_t presence_read_file(struct pci_slot *pci_slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | { |
| 206 | int retval; |
| 207 | u8 value; |
| 208 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 209 | retval = get_adapter_status(pci_slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | if (retval) |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 211 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 213 | return sprintf(buf, "%d\n", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 216 | static struct pci_slot_attribute hotplug_slot_attr_presence = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | .attr = {.name = "adapter", .mode = S_IFREG | S_IRUGO}, |
| 218 | .show = presence_read_file, |
| 219 | }; |
| 220 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 221 | static ssize_t test_write_file(struct pci_slot *pci_slot, const char *buf, |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 222 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 224 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | unsigned long ltest; |
| 226 | u32 test; |
| 227 | int retval = 0; |
| 228 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 229 | ltest = simple_strtoul(buf, NULL, 10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | test = (u32)(ltest & 0xffffffff); |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 231 | dbg("test = %d\n", test); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
| 233 | if (!try_module_get(slot->ops->owner)) { |
| 234 | retval = -ENODEV; |
| 235 | goto exit; |
| 236 | } |
| 237 | if (slot->ops->hardware_test) |
| 238 | retval = slot->ops->hardware_test(slot, test); |
| 239 | module_put(slot->ops->owner); |
| 240 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 241 | exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | if (retval) |
| 243 | return retval; |
| 244 | return count; |
| 245 | } |
| 246 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 247 | static struct pci_slot_attribute hotplug_slot_attr_test = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | .attr = {.name = "test", .mode = S_IFREG | S_IRUGO | S_IWUSR}, |
| 249 | .store = test_write_file |
| 250 | }; |
| 251 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 252 | static bool has_power_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 254 | struct hotplug_slot *slot = pci_slot->hotplug; |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 257 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | if ((slot->ops->enable_slot) || |
| 259 | (slot->ops->disable_slot) || |
| 260 | (slot->ops->get_power_status)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 261 | return true; |
| 262 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
| 264 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 265 | static bool has_attention_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 267 | struct hotplug_slot *slot = pci_slot->hotplug; |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 270 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | if ((slot->ops->set_attention_status) || |
| 272 | (slot->ops->get_attention_status)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 273 | return true; |
| 274 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } |
| 276 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 277 | static bool has_latch_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 279 | struct hotplug_slot *slot = pci_slot->hotplug; |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 282 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | if (slot->ops->get_latch_status) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 284 | return true; |
| 285 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
| 287 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 288 | static bool has_adapter_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 290 | struct hotplug_slot *slot = pci_slot->hotplug; |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 293 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | if (slot->ops->get_adapter_status) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 295 | return true; |
| 296 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 299 | static bool has_test_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 301 | struct hotplug_slot *slot = pci_slot->hotplug; |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 304 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | if (slot->ops->hardware_test) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 306 | return true; |
| 307 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 310 | static int fs_add_slot(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 312 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 314 | /* Create symbolic link to the hotplug driver module */ |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 315 | pci_hp_create_module_link(pci_slot); |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 316 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 317 | if (has_power_file(pci_slot)) { |
| 318 | retval = sysfs_create_file(&pci_slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 319 | &hotplug_slot_attr_power.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 320 | if (retval) |
| 321 | goto exit_power; |
| 322 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 324 | if (has_attention_file(pci_slot)) { |
| 325 | retval = sysfs_create_file(&pci_slot->kobj, |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 326 | &hotplug_slot_attr_attention.attr); |
| 327 | if (retval) |
| 328 | goto exit_attention; |
| 329 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 331 | if (has_latch_file(pci_slot)) { |
| 332 | retval = sysfs_create_file(&pci_slot->kobj, |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 333 | &hotplug_slot_attr_latch.attr); |
| 334 | if (retval) |
| 335 | goto exit_latch; |
| 336 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 338 | if (has_adapter_file(pci_slot)) { |
| 339 | retval = sysfs_create_file(&pci_slot->kobj, |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 340 | &hotplug_slot_attr_presence.attr); |
| 341 | if (retval) |
| 342 | goto exit_adapter; |
| 343 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 345 | if (has_test_file(pci_slot)) { |
| 346 | retval = sysfs_create_file(&pci_slot->kobj, |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 347 | &hotplug_slot_attr_test.attr); |
| 348 | if (retval) |
| 349 | goto exit_test; |
| 350 | } |
| 351 | |
| 352 | goto exit; |
| 353 | |
| 354 | exit_test: |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 355 | if (has_adapter_file(pci_slot)) |
| 356 | sysfs_remove_file(&pci_slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 357 | &hotplug_slot_attr_presence.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 358 | exit_adapter: |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 359 | if (has_latch_file(pci_slot)) |
| 360 | sysfs_remove_file(&pci_slot->kobj, &hotplug_slot_attr_latch.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 361 | exit_latch: |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 362 | if (has_attention_file(pci_slot)) |
| 363 | sysfs_remove_file(&pci_slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 364 | &hotplug_slot_attr_attention.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 365 | exit_attention: |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 366 | if (has_power_file(pci_slot)) |
| 367 | sysfs_remove_file(&pci_slot->kobj, &hotplug_slot_attr_power.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 368 | exit_power: |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 369 | pci_hp_remove_module_link(pci_slot); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 370 | exit: |
| 371 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | } |
| 373 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 374 | static void fs_remove_slot(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | { |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 376 | if (has_power_file(pci_slot)) |
| 377 | sysfs_remove_file(&pci_slot->kobj, &hotplug_slot_attr_power.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 379 | if (has_attention_file(pci_slot)) |
| 380 | sysfs_remove_file(&pci_slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 381 | &hotplug_slot_attr_attention.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 383 | if (has_latch_file(pci_slot)) |
| 384 | sysfs_remove_file(&pci_slot->kobj, &hotplug_slot_attr_latch.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 386 | if (has_adapter_file(pci_slot)) |
| 387 | sysfs_remove_file(&pci_slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 388 | &hotplug_slot_attr_presence.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 390 | if (has_test_file(pci_slot)) |
| 391 | sysfs_remove_file(&pci_slot->kobj, &hotplug_slot_attr_test.attr); |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 392 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 393 | pci_hp_remove_module_link(pci_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 396 | static struct hotplug_slot *get_slot_from_name(const char *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | { |
| 398 | struct hotplug_slot *slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Geliang Tang | 2ac83cc | 2015-12-12 21:36:57 +0800 | [diff] [blame] | 400 | list_for_each_entry(slot, &pci_hotplug_slot_list, slot_list) { |
Alex Chiang | 58319b8 | 2008-10-20 17:41:58 -0600 | [diff] [blame] | 401 | if (strcmp(hotplug_slot_name(slot), name) == 0) |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 402 | return slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | } |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 404 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | /** |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 408 | * __pci_hp_register - register a hotplug_slot with the PCI hotplug subsystem |
Jesse Barnes | 65b943f | 2008-06-25 15:27:34 -0700 | [diff] [blame] | 409 | * @bus: bus this slot is on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | * @slot: pointer to the &struct hotplug_slot to register |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 411 | * @devnr: device number |
Alex Chiang | 1359f27 | 2008-10-20 17:40:42 -0600 | [diff] [blame] | 412 | * @name: name registered with kobject core |
Randy Dunlap | 503998c | 2009-06-24 09:18:14 -0700 | [diff] [blame] | 413 | * @owner: caller module owner |
| 414 | * @mod_name: caller module name |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | * |
| 416 | * Registers a hotplug slot with the pci hotplug subsystem, which will allow |
| 417 | * userspace interaction to the slot. |
| 418 | * |
| 419 | * Returns 0 if successful, anything else for an error. |
| 420 | */ |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 421 | int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, |
| 422 | int devnr, const char *name, |
| 423 | struct module *owner, const char *mod_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | { |
| 425 | int result; |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 426 | struct pci_slot *pci_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
| 428 | if (slot == NULL) |
| 429 | return -ENODEV; |
| 430 | if ((slot->info == NULL) || (slot->ops == NULL)) |
| 431 | return -EINVAL; |
| 432 | if (slot->release == NULL) { |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 433 | dbg("Why are you trying to register a hotplug slot without a proper release function?\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | return -EINVAL; |
| 435 | } |
| 436 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 437 | slot->ops->owner = owner; |
| 438 | slot->ops->mod_name = mod_name; |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 439 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 440 | mutex_lock(&pci_hp_mutex); |
Alex Chiang | 8344b56 | 2008-06-10 15:30:42 -0600 | [diff] [blame] | 441 | /* |
| 442 | * No problems if we call this interface from both ACPI_PCI_SLOT |
| 443 | * driver and call it here again. If we've already created the |
| 444 | * pci_slot, the interface will simply bump the refcount. |
| 445 | */ |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 446 | pci_slot = pci_create_slot(bus, devnr, name, slot); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 447 | if (IS_ERR(pci_slot)) { |
| 448 | result = PTR_ERR(pci_slot); |
Alex Chiang | 5fe6cc6 | 2008-10-20 17:41:02 -0600 | [diff] [blame] | 449 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | } |
Greg Kroah-Hartman | 64dbcac | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 451 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 452 | slot->pci_slot = pci_slot; |
| 453 | pci_slot->hotplug = slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 455 | list_add(&slot->slot_list, &pci_hotplug_slot_list); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 456 | |
| 457 | result = fs_add_slot(pci_slot); |
| 458 | kobject_uevent(&pci_slot->kobj, KOBJ_ADD); |
Alex Chiang | 1359f27 | 2008-10-20 17:40:42 -0600 | [diff] [blame] | 459 | dbg("Added slot %s to the list\n", name); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 460 | out: |
| 461 | mutex_unlock(&pci_hp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | return result; |
| 463 | } |
Ryan Desfosses | b7fe943 | 2014-04-25 14:32:25 -0600 | [diff] [blame] | 464 | EXPORT_SYMBOL_GPL(__pci_hp_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | /** |
| 467 | * pci_hp_deregister - deregister a hotplug_slot with the PCI hotplug subsystem |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 468 | * @slot: pointer to the &struct hotplug_slot to deregister |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | * |
| 470 | * The @slot must have been registered with the pci hotplug subsystem |
| 471 | * previously with a call to pci_hp_register(). |
| 472 | * |
| 473 | * Returns 0 if successful, anything else for an error. |
| 474 | */ |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 475 | int pci_hp_deregister(struct hotplug_slot *slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | { |
| 477 | struct hotplug_slot *temp; |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 478 | struct pci_slot *pci_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 480 | if (!slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | return -ENODEV; |
| 482 | |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 483 | mutex_lock(&pci_hp_mutex); |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 484 | temp = get_slot_from_name(hotplug_slot_name(slot)); |
| 485 | if (temp != slot) { |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 486 | mutex_unlock(&pci_hp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | return -ENODEV; |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 488 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 490 | list_del(&slot->slot_list); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 491 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 492 | pci_slot = slot->pci_slot; |
| 493 | fs_remove_slot(pci_slot); |
| 494 | dbg("Removed slot %s from the list\n", hotplug_slot_name(slot)); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 495 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 496 | slot->release(slot); |
| 497 | pci_slot->hotplug = NULL; |
| 498 | pci_destroy_slot(pci_slot); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 499 | mutex_unlock(&pci_hp_mutex); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | return 0; |
| 502 | } |
Ryan Desfosses | b7fe943 | 2014-04-25 14:32:25 -0600 | [diff] [blame] | 503 | EXPORT_SYMBOL_GPL(pci_hp_deregister); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
| 505 | /** |
| 506 | * pci_hp_change_slot_info - changes the slot's information structure in the core |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 507 | * @slot: pointer to the slot whose info has changed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | * @info: pointer to the info copy into the slot's info structure |
| 509 | * |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 510 | * @slot must have been registered with the pci |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | * hotplug subsystem previously with a call to pci_hp_register(). |
| 512 | * |
| 513 | * Returns 0 if successful, anything else for an error. |
| 514 | */ |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 515 | int pci_hp_change_slot_info(struct hotplug_slot *slot, |
Bjorn Helgaas | d67aed6 | 2013-04-12 11:18:07 -0600 | [diff] [blame] | 516 | struct hotplug_slot_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | { |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 518 | if (!slot || !info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | return -ENODEV; |
| 520 | |
Yijing Wang | a6ed1f4 | 2015-06-19 15:57:44 +0800 | [diff] [blame] | 521 | memcpy(slot->info, info, sizeof(struct hotplug_slot_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
| 523 | return 0; |
| 524 | } |
Ryan Desfosses | b7fe943 | 2014-04-25 14:32:25 -0600 | [diff] [blame] | 525 | EXPORT_SYMBOL_GPL(pci_hp_change_slot_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 527 | static int __init pci_hotplug_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | { |
| 529 | int result; |
Greg Kroah-Hartman | 0fed80f | 2007-11-01 19:41:16 -0700 | [diff] [blame] | 530 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | result = cpci_hotplug_init(debug); |
| 532 | if (result) { |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 533 | err("cpci_hotplug_init with error %d\n", result); |
| 534 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | } |
| 536 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 537 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | return result; |
| 539 | } |
| 540 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 541 | static void __exit pci_hotplug_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | { |
| 543 | cpci_hotplug_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | module_init(pci_hotplug_init); |
| 547 | module_exit(pci_hotplug_exit); |
| 548 | |
| 549 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 550 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 551 | MODULE_LICENSE("GPL"); |
| 552 | module_param(debug, bool, 0644); |
| 553 | MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); |