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> |
| 36 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/init.h> |
| 38 | #include <linux/mount.h> |
| 39 | #include <linux/namei.h> |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 40 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/pci.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 42 | #include <linux/pci_hotplug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <asm/uaccess.h> |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 44 | #include "../pci.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #define MY_NAME "pci_hotplug" |
| 47 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 48 | #define dbg(fmt, arg...) do { if (debug) printk(KERN_DEBUG "%s: %s: " fmt , MY_NAME , __func__ , ## arg); } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
| 52 | |
| 53 | |
| 54 | /* local variables */ |
| 55 | static int debug; |
| 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 | |
| 62 | ////////////////////////////////////////////////////////////////// |
| 63 | |
| 64 | static LIST_HEAD(pci_hotplug_slot_list); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 65 | static DEFINE_MUTEX(pci_hp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | /* these strings match up with the values in pci_bus_speed */ |
| 68 | static char *pci_bus_speed_strings[] = { |
| 69 | "33 MHz PCI", /* 0x00 */ |
| 70 | "66 MHz PCI", /* 0x01 */ |
| 71 | "66 MHz PCIX", /* 0x02 */ |
| 72 | "100 MHz PCIX", /* 0x03 */ |
| 73 | "133 MHz PCIX", /* 0x04 */ |
| 74 | NULL, /* 0x05 */ |
| 75 | NULL, /* 0x06 */ |
| 76 | NULL, /* 0x07 */ |
| 77 | NULL, /* 0x08 */ |
| 78 | "66 MHz PCIX 266", /* 0x09 */ |
| 79 | "100 MHz PCIX 266", /* 0x0a */ |
| 80 | "133 MHz PCIX 266", /* 0x0b */ |
| 81 | NULL, /* 0x0c */ |
| 82 | NULL, /* 0x0d */ |
| 83 | NULL, /* 0x0e */ |
| 84 | NULL, /* 0x0f */ |
| 85 | NULL, /* 0x10 */ |
| 86 | "66 MHz PCIX 533", /* 0x11 */ |
| 87 | "100 MHz PCIX 533", /* 0x12 */ |
| 88 | "133 MHz PCIX 533", /* 0x13 */ |
| 89 | "25 GBps PCI-E", /* 0x14 */ |
| 90 | }; |
| 91 | |
| 92 | #ifdef CONFIG_HOTPLUG_PCI_CPCI |
| 93 | extern int cpci_hotplug_init(int debug); |
| 94 | extern void cpci_hotplug_exit(void); |
| 95 | #else |
| 96 | static inline int cpci_hotplug_init(int debug) { return 0; } |
| 97 | static inline void cpci_hotplug_exit(void) { } |
| 98 | #endif |
| 99 | |
| 100 | /* Weee, fun with macros... */ |
| 101 | #define GET_STATUS(name,type) \ |
| 102 | static int get_##name (struct hotplug_slot *slot, type *value) \ |
| 103 | { \ |
| 104 | struct hotplug_slot_ops *ops = slot->ops; \ |
| 105 | int retval = 0; \ |
Kenji Kaneshige | bd1d985 | 2008-09-29 17:37:05 +0900 | [diff] [blame] | 106 | if (!try_module_get(ops->owner)) \ |
Zhao, Yu | c8761fe | 2008-09-22 14:26:05 +0800 | [diff] [blame] | 107 | return -ENODEV; \ |
| 108 | if (ops->get_##name) \ |
| 109 | retval = ops->get_##name(slot, value); \ |
| 110 | else \ |
| 111 | *value = slot->info->name; \ |
| 112 | module_put(ops->owner); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | return retval; \ |
| 114 | } |
| 115 | |
| 116 | GET_STATUS(power_status, u8) |
| 117 | GET_STATUS(attention_status, u8) |
| 118 | GET_STATUS(latch_status, u8) |
| 119 | GET_STATUS(adapter_status, u8) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | GET_STATUS(max_bus_speed, enum pci_bus_speed) |
| 121 | GET_STATUS(cur_bus_speed, enum pci_bus_speed) |
| 122 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 123 | static ssize_t power_read_file(struct pci_slot *slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { |
| 125 | int retval; |
| 126 | u8 value; |
| 127 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 128 | retval = get_power_status(slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | if (retval) |
| 130 | goto exit; |
| 131 | retval = sprintf (buf, "%d\n", value); |
| 132 | exit: |
| 133 | return retval; |
| 134 | } |
| 135 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 136 | static ssize_t power_write_file(struct pci_slot *pci_slot, const char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | size_t count) |
| 138 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 139 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | unsigned long lpower; |
| 141 | u8 power; |
| 142 | int retval = 0; |
| 143 | |
| 144 | lpower = simple_strtoul (buf, NULL, 10); |
| 145 | power = (u8)(lpower & 0xff); |
| 146 | dbg ("power = %d\n", power); |
| 147 | |
| 148 | if (!try_module_get(slot->ops->owner)) { |
| 149 | retval = -ENODEV; |
| 150 | goto exit; |
| 151 | } |
| 152 | switch (power) { |
| 153 | case 0: |
| 154 | if (slot->ops->disable_slot) |
| 155 | retval = slot->ops->disable_slot(slot); |
| 156 | break; |
| 157 | |
| 158 | case 1: |
| 159 | if (slot->ops->enable_slot) |
| 160 | retval = slot->ops->enable_slot(slot); |
| 161 | break; |
| 162 | |
| 163 | default: |
| 164 | err ("Illegal value specified for power\n"); |
| 165 | retval = -EINVAL; |
| 166 | } |
| 167 | module_put(slot->ops->owner); |
| 168 | |
| 169 | exit: |
| 170 | if (retval) |
| 171 | return retval; |
| 172 | return count; |
| 173 | } |
| 174 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 175 | static struct pci_slot_attribute hotplug_slot_attr_power = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | .attr = {.name = "power", .mode = S_IFREG | S_IRUGO | S_IWUSR}, |
| 177 | .show = power_read_file, |
| 178 | .store = power_write_file |
| 179 | }; |
| 180 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 181 | static ssize_t attention_read_file(struct pci_slot *slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { |
| 183 | int retval; |
| 184 | u8 value; |
| 185 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 186 | retval = get_attention_status(slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | if (retval) |
| 188 | goto exit; |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 189 | retval = sprintf(buf, "%d\n", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
| 191 | exit: |
| 192 | return retval; |
| 193 | } |
| 194 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 195 | static ssize_t attention_write_file(struct pci_slot *slot, const char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | size_t count) |
| 197 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 198 | struct hotplug_slot_ops *ops = slot->hotplug->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | unsigned long lattention; |
| 200 | u8 attention; |
| 201 | int retval = 0; |
| 202 | |
| 203 | lattention = simple_strtoul (buf, NULL, 10); |
| 204 | attention = (u8)(lattention & 0xff); |
| 205 | dbg (" - attention = %d\n", attention); |
| 206 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 207 | if (!try_module_get(ops->owner)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | retval = -ENODEV; |
| 209 | goto exit; |
| 210 | } |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 211 | if (ops->set_attention_status) |
| 212 | retval = ops->set_attention_status(slot->hotplug, attention); |
| 213 | module_put(ops->owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
| 215 | exit: |
| 216 | if (retval) |
| 217 | return retval; |
| 218 | return count; |
| 219 | } |
| 220 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 221 | static struct pci_slot_attribute hotplug_slot_attr_attention = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | .attr = {.name = "attention", .mode = S_IFREG | S_IRUGO | S_IWUSR}, |
| 223 | .show = attention_read_file, |
| 224 | .store = attention_write_file |
| 225 | }; |
| 226 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 227 | static ssize_t latch_read_file(struct pci_slot *slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | { |
| 229 | int retval; |
| 230 | u8 value; |
| 231 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 232 | retval = get_latch_status(slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | if (retval) |
| 234 | goto exit; |
| 235 | retval = sprintf (buf, "%d\n", value); |
| 236 | |
| 237 | exit: |
| 238 | return retval; |
| 239 | } |
| 240 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 241 | static struct pci_slot_attribute hotplug_slot_attr_latch = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | .attr = {.name = "latch", .mode = S_IFREG | S_IRUGO}, |
| 243 | .show = latch_read_file, |
| 244 | }; |
| 245 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 246 | static ssize_t presence_read_file(struct pci_slot *slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | { |
| 248 | int retval; |
| 249 | u8 value; |
| 250 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 251 | retval = get_adapter_status(slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | if (retval) |
| 253 | goto exit; |
| 254 | retval = sprintf (buf, "%d\n", value); |
| 255 | |
| 256 | exit: |
| 257 | return retval; |
| 258 | } |
| 259 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 260 | static struct pci_slot_attribute hotplug_slot_attr_presence = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | .attr = {.name = "adapter", .mode = S_IFREG | S_IRUGO}, |
| 262 | .show = presence_read_file, |
| 263 | }; |
| 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | static char *unknown_speed = "Unknown bus speed"; |
| 266 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 267 | static ssize_t max_bus_speed_read_file(struct pci_slot *slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | { |
| 269 | char *speed_string; |
| 270 | int retval; |
| 271 | enum pci_bus_speed value; |
| 272 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 273 | retval = get_max_bus_speed(slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | if (retval) |
| 275 | goto exit; |
| 276 | |
| 277 | if (value == PCI_SPEED_UNKNOWN) |
| 278 | speed_string = unknown_speed; |
| 279 | else |
| 280 | speed_string = pci_bus_speed_strings[value]; |
| 281 | |
| 282 | retval = sprintf (buf, "%s\n", speed_string); |
| 283 | |
| 284 | exit: |
| 285 | return retval; |
| 286 | } |
| 287 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 288 | static struct pci_slot_attribute hotplug_slot_attr_max_bus_speed = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | .attr = {.name = "max_bus_speed", .mode = S_IFREG | S_IRUGO}, |
| 290 | .show = max_bus_speed_read_file, |
| 291 | }; |
| 292 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 293 | static ssize_t cur_bus_speed_read_file(struct pci_slot *slot, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | { |
| 295 | char *speed_string; |
| 296 | int retval; |
| 297 | enum pci_bus_speed value; |
| 298 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 299 | retval = get_cur_bus_speed(slot->hotplug, &value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | if (retval) |
| 301 | goto exit; |
| 302 | |
| 303 | if (value == PCI_SPEED_UNKNOWN) |
| 304 | speed_string = unknown_speed; |
| 305 | else |
| 306 | speed_string = pci_bus_speed_strings[value]; |
| 307 | |
| 308 | retval = sprintf (buf, "%s\n", speed_string); |
| 309 | |
| 310 | exit: |
| 311 | return retval; |
| 312 | } |
| 313 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 314 | static struct pci_slot_attribute hotplug_slot_attr_cur_bus_speed = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | .attr = {.name = "cur_bus_speed", .mode = S_IFREG | S_IRUGO}, |
| 316 | .show = cur_bus_speed_read_file, |
| 317 | }; |
| 318 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 319 | static ssize_t test_write_file(struct pci_slot *pci_slot, const char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | size_t count) |
| 321 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 322 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | unsigned long ltest; |
| 324 | u32 test; |
| 325 | int retval = 0; |
| 326 | |
| 327 | ltest = simple_strtoul (buf, NULL, 10); |
| 328 | test = (u32)(ltest & 0xffffffff); |
| 329 | dbg ("test = %d\n", test); |
| 330 | |
| 331 | if (!try_module_get(slot->ops->owner)) { |
| 332 | retval = -ENODEV; |
| 333 | goto exit; |
| 334 | } |
| 335 | if (slot->ops->hardware_test) |
| 336 | retval = slot->ops->hardware_test(slot, test); |
| 337 | module_put(slot->ops->owner); |
| 338 | |
| 339 | exit: |
| 340 | if (retval) |
| 341 | return retval; |
| 342 | return count; |
| 343 | } |
| 344 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 345 | static struct pci_slot_attribute hotplug_slot_attr_test = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | .attr = {.name = "test", .mode = S_IFREG | S_IRUGO | S_IWUSR}, |
| 347 | .store = test_write_file |
| 348 | }; |
| 349 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 350 | static bool has_power_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 352 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 354 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | if ((slot->ops->enable_slot) || |
| 356 | (slot->ops->disable_slot) || |
| 357 | (slot->ops->get_power_status)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 358 | return true; |
| 359 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | } |
| 361 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 362 | static bool has_attention_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 364 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 366 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | if ((slot->ops->set_attention_status) || |
| 368 | (slot->ops->get_attention_status)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 369 | return true; |
| 370 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 373 | static bool has_latch_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 375 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 377 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | if (slot->ops->get_latch_status) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 379 | return true; |
| 380 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | } |
| 382 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 383 | static bool has_adapter_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 385 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 387 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | if (slot->ops->get_adapter_status) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 389 | return true; |
| 390 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | } |
| 392 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 393 | static bool has_max_bus_speed_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 395 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 397 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | if (slot->ops->get_max_bus_speed) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 399 | return true; |
| 400 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | } |
| 402 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 403 | static bool has_cur_bus_speed_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 405 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 407 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | if (slot->ops->get_cur_bus_speed) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 409 | return true; |
| 410 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | } |
| 412 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 413 | static bool has_test_file(struct pci_slot *pci_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 415 | struct hotplug_slot *slot = pci_slot->hotplug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | if ((!slot) || (!slot->ops)) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 417 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | if (slot->ops->hardware_test) |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 419 | return true; |
| 420 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 423 | static int fs_add_slot(struct pci_slot *slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 425 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 427 | /* Create symbolic link to the hotplug driver module */ |
| 428 | pci_hp_create_module_link(slot); |
| 429 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 430 | if (has_power_file(slot)) { |
| 431 | retval = sysfs_create_file(&slot->kobj, |
| 432 | &hotplug_slot_attr_power.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 433 | if (retval) |
| 434 | goto exit_power; |
| 435 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 437 | if (has_attention_file(slot)) { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 438 | retval = sysfs_create_file(&slot->kobj, |
| 439 | &hotplug_slot_attr_attention.attr); |
| 440 | if (retval) |
| 441 | goto exit_attention; |
| 442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 444 | if (has_latch_file(slot)) { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 445 | retval = sysfs_create_file(&slot->kobj, |
| 446 | &hotplug_slot_attr_latch.attr); |
| 447 | if (retval) |
| 448 | goto exit_latch; |
| 449 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 451 | if (has_adapter_file(slot)) { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 452 | retval = sysfs_create_file(&slot->kobj, |
| 453 | &hotplug_slot_attr_presence.attr); |
| 454 | if (retval) |
| 455 | goto exit_adapter; |
| 456 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 458 | if (has_max_bus_speed_file(slot)) { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 459 | retval = sysfs_create_file(&slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 460 | &hotplug_slot_attr_max_bus_speed.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 461 | if (retval) |
| 462 | goto exit_max_speed; |
| 463 | } |
| 464 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 465 | if (has_cur_bus_speed_file(slot)) { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 466 | retval = sysfs_create_file(&slot->kobj, |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 467 | &hotplug_slot_attr_cur_bus_speed.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 468 | if (retval) |
| 469 | goto exit_cur_speed; |
| 470 | } |
| 471 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 472 | if (has_test_file(slot)) { |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 473 | retval = sysfs_create_file(&slot->kobj, |
| 474 | &hotplug_slot_attr_test.attr); |
| 475 | if (retval) |
| 476 | goto exit_test; |
| 477 | } |
| 478 | |
| 479 | goto exit; |
| 480 | |
| 481 | exit_test: |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 482 | if (has_cur_bus_speed_file(slot)) |
| 483 | sysfs_remove_file(&slot->kobj, |
| 484 | &hotplug_slot_attr_cur_bus_speed.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 485 | exit_cur_speed: |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 486 | if (has_max_bus_speed_file(slot)) |
| 487 | sysfs_remove_file(&slot->kobj, |
| 488 | &hotplug_slot_attr_max_bus_speed.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 489 | exit_max_speed: |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 490 | if (has_adapter_file(slot)) |
| 491 | sysfs_remove_file(&slot->kobj, |
| 492 | &hotplug_slot_attr_presence.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 493 | exit_adapter: |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 494 | if (has_latch_file(slot)) |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 495 | sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_latch.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 496 | exit_latch: |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 497 | if (has_attention_file(slot)) |
| 498 | sysfs_remove_file(&slot->kobj, |
| 499 | &hotplug_slot_attr_attention.attr); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 500 | exit_attention: |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 501 | if (has_power_file(slot)) |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 502 | sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_power.attr); |
| 503 | exit_power: |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 504 | pci_hp_remove_module_link(slot); |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 505 | exit: |
| 506 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |
| 508 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 509 | static void fs_remove_slot(struct pci_slot *slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | { |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 511 | if (has_power_file(slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_power.attr); |
| 513 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 514 | if (has_attention_file(slot)) |
| 515 | sysfs_remove_file(&slot->kobj, |
| 516 | &hotplug_slot_attr_attention.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 518 | if (has_latch_file(slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_latch.attr); |
| 520 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 521 | if (has_adapter_file(slot)) |
| 522 | sysfs_remove_file(&slot->kobj, |
| 523 | &hotplug_slot_attr_presence.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 525 | if (has_max_bus_speed_file(slot)) |
| 526 | sysfs_remove_file(&slot->kobj, |
| 527 | &hotplug_slot_attr_max_bus_speed.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 529 | if (has_cur_bus_speed_file(slot)) |
| 530 | sysfs_remove_file(&slot->kobj, |
| 531 | &hotplug_slot_attr_cur_bus_speed.attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
Kenji Kaneshige | 498a8fa | 2009-06-16 11:00:47 +0900 | [diff] [blame] | 533 | if (has_test_file(slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_test.attr); |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 535 | |
| 536 | pci_hp_remove_module_link(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | static struct hotplug_slot *get_slot_from_name (const char *name) |
| 540 | { |
| 541 | struct hotplug_slot *slot; |
| 542 | struct list_head *tmp; |
| 543 | |
| 544 | list_for_each (tmp, &pci_hotplug_slot_list) { |
| 545 | slot = list_entry (tmp, struct hotplug_slot, slot_list); |
Alex Chiang | 58319b8 | 2008-10-20 17:41:58 -0600 | [diff] [blame] | 546 | if (strcmp(hotplug_slot_name(slot), name) == 0) |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 547 | return slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | } |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 549 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
| 551 | |
| 552 | /** |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 553 | * __pci_hp_register - register a hotplug_slot with the PCI hotplug subsystem |
Jesse Barnes | 65b943f | 2008-06-25 15:27:34 -0700 | [diff] [blame] | 554 | * @bus: bus this slot is on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | * @slot: pointer to the &struct hotplug_slot to register |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 556 | * @devnr: device number |
Alex Chiang | 1359f27 | 2008-10-20 17:40:42 -0600 | [diff] [blame] | 557 | * @name: name registered with kobject core |
Randy Dunlap | 503998c | 2009-06-24 09:18:14 -0700 | [diff] [blame] | 558 | * @owner: caller module owner |
| 559 | * @mod_name: caller module name |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | * |
| 561 | * Registers a hotplug slot with the pci hotplug subsystem, which will allow |
| 562 | * userspace interaction to the slot. |
| 563 | * |
| 564 | * Returns 0 if successful, anything else for an error. |
| 565 | */ |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 566 | int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, |
| 567 | int devnr, const char *name, |
| 568 | struct module *owner, const char *mod_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
| 570 | int result; |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 571 | struct pci_slot *pci_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | |
| 573 | if (slot == NULL) |
| 574 | return -ENODEV; |
| 575 | if ((slot->info == NULL) || (slot->ops == NULL)) |
| 576 | return -EINVAL; |
| 577 | if (slot->release == NULL) { |
Joe Perches | a6f29a9 | 2007-11-19 17:48:29 -0800 | [diff] [blame] | 578 | dbg("Why are you trying to register a hotplug slot " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | "without a proper release function?\n"); |
| 580 | return -EINVAL; |
| 581 | } |
| 582 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 583 | slot->ops->owner = owner; |
| 584 | slot->ops->mod_name = mod_name; |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 585 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 586 | mutex_lock(&pci_hp_mutex); |
Alex Chiang | 8344b56 | 2008-06-10 15:30:42 -0600 | [diff] [blame] | 587 | /* |
| 588 | * No problems if we call this interface from both ACPI_PCI_SLOT |
| 589 | * driver and call it here again. If we've already created the |
| 590 | * pci_slot, the interface will simply bump the refcount. |
| 591 | */ |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 592 | pci_slot = pci_create_slot(bus, devnr, name, slot); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 593 | if (IS_ERR(pci_slot)) { |
| 594 | result = PTR_ERR(pci_slot); |
Alex Chiang | 5fe6cc6 | 2008-10-20 17:41:02 -0600 | [diff] [blame] | 595 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | } |
Greg Kroah-Hartman | 64dbcac | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 597 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 598 | slot->pci_slot = pci_slot; |
| 599 | pci_slot->hotplug = slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 601 | list_add(&slot->slot_list, &pci_hotplug_slot_list); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 602 | |
| 603 | result = fs_add_slot(pci_slot); |
| 604 | kobject_uevent(&pci_slot->kobj, KOBJ_ADD); |
Alex Chiang | 1359f27 | 2008-10-20 17:40:42 -0600 | [diff] [blame] | 605 | dbg("Added slot %s to the list\n", name); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 606 | out: |
| 607 | mutex_unlock(&pci_hp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | return result; |
| 609 | } |
| 610 | |
| 611 | /** |
| 612 | * pci_hp_deregister - deregister a hotplug_slot with the PCI hotplug subsystem |
Jesse Barnes | 65b943f | 2008-06-25 15:27:34 -0700 | [diff] [blame] | 613 | * @hotplug: pointer to the &struct hotplug_slot to deregister |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | * |
| 615 | * The @slot must have been registered with the pci hotplug subsystem |
| 616 | * previously with a call to pci_hp_register(). |
| 617 | * |
| 618 | * Returns 0 if successful, anything else for an error. |
| 619 | */ |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 620 | int pci_hp_deregister(struct hotplug_slot *hotplug) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | { |
| 622 | struct hotplug_slot *temp; |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 623 | struct pci_slot *slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 625 | if (!hotplug) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | return -ENODEV; |
| 627 | |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 628 | mutex_lock(&pci_hp_mutex); |
Alex Chiang | 58319b8 | 2008-10-20 17:41:58 -0600 | [diff] [blame] | 629 | temp = get_slot_from_name(hotplug_slot_name(hotplug)); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 630 | if (temp != hotplug) { |
| 631 | mutex_unlock(&pci_hp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | return -ENODEV; |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 633 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 635 | list_del(&hotplug->slot_list); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 636 | |
| 637 | slot = hotplug->pci_slot; |
| 638 | fs_remove_slot(slot); |
Alex Chiang | 58319b8 | 2008-10-20 17:41:58 -0600 | [diff] [blame] | 639 | dbg("Removed slot %s from the list\n", hotplug_slot_name(hotplug)); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 640 | |
| 641 | hotplug->release(hotplug); |
| 642 | slot->hotplug = NULL; |
| 643 | pci_destroy_slot(slot); |
Kenji Kaneshige | 95cb909 | 2008-10-20 17:40:57 -0600 | [diff] [blame] | 644 | mutex_unlock(&pci_hp_mutex); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 645 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * pci_hp_change_slot_info - changes the slot's information structure in the core |
Jesse Barnes | 65b943f | 2008-06-25 15:27:34 -0700 | [diff] [blame] | 651 | * @hotplug: pointer to the slot whose info has changed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | * @info: pointer to the info copy into the slot's info structure |
| 653 | * |
| 654 | * @slot must have been registered with the pci |
| 655 | * hotplug subsystem previously with a call to pci_hp_register(). |
| 656 | * |
| 657 | * Returns 0 if successful, anything else for an error. |
| 658 | */ |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 659 | int __must_check pci_hp_change_slot_info(struct hotplug_slot *hotplug, |
Greg Kroah-Hartman | 660a0e8 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 660 | struct hotplug_slot_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | { |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 662 | struct pci_slot *slot; |
| 663 | if (!hotplug || !info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | return -ENODEV; |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 665 | slot = hotplug->pci_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 667 | memcpy(hotplug->info, info, sizeof(struct hotplug_slot_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | static int __init pci_hotplug_init (void) |
| 673 | { |
| 674 | int result; |
Greg Kroah-Hartman | 0fed80f | 2007-11-01 19:41:16 -0700 | [diff] [blame] | 675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | result = cpci_hotplug_init(debug); |
| 677 | if (result) { |
| 678 | err ("cpci_hotplug_init with error %d\n", result); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 679 | goto err_cpci; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | info (DRIVER_DESC " version: " DRIVER_VERSION "\n"); |
Greg Kroah-Hartman | 81ace5c | 2007-10-29 23:22:26 -0500 | [diff] [blame] | 683 | |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 684 | err_cpci: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | return result; |
| 686 | } |
| 687 | |
| 688 | static void __exit pci_hotplug_exit (void) |
| 689 | { |
| 690 | cpci_hotplug_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | module_init(pci_hotplug_init); |
| 694 | module_exit(pci_hotplug_exit); |
| 695 | |
| 696 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 697 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 698 | MODULE_LICENSE("GPL"); |
| 699 | module_param(debug, bool, 0644); |
| 700 | MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); |
| 701 | |
Kenji Kaneshige | c825bc9 | 2009-06-16 11:01:25 +0900 | [diff] [blame] | 702 | EXPORT_SYMBOL_GPL(__pci_hp_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | EXPORT_SYMBOL_GPL(pci_hp_deregister); |
| 704 | EXPORT_SYMBOL_GPL(pci_hp_change_slot_info); |