Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Functions to handle I2O drivers (OSMs) and I2O bus type for sysfs |
| 3 | * |
| 4 | * Copyright (C) 2004 Markus Lidel <Markus.Lidel@shadowconnect.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | * |
| 11 | * Fixes/additions: |
| 12 | * Markus Lidel <Markus.Lidel@shadowconnect.com> |
| 13 | * initial version. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/device.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/rwsem.h> |
| 19 | #include <linux/i2o.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 20 | #include <linux/workqueue.h> |
| 21 | #include <linux/string.h> |
| 22 | #include <linux/slab.h> |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 23 | #include <linux/log2.h> |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 24 | #include "core.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 26 | #define OSM_NAME "i2o" |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | /* max_drivers - Maximum I2O drivers (OSMs) which could be registered */ |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 29 | static unsigned int i2o_max_drivers = I2O_MAX_DRIVERS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | module_param_named(max_drivers, i2o_max_drivers, uint, 0); |
| 31 | MODULE_PARM_DESC(max_drivers, "maximum number of OSM's to support"); |
| 32 | |
| 33 | /* I2O drivers lock and array */ |
| 34 | static spinlock_t i2o_drivers_lock; |
| 35 | static struct i2o_driver **i2o_drivers; |
| 36 | |
| 37 | /** |
Randy Dunlap | d9489fb | 2006-12-06 20:38:43 -0800 | [diff] [blame] | 38 | * i2o_bus_match - Tell if I2O device class id matches the class ids of the I2O driver (OSM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | * @dev: device which should be verified |
| 40 | * @drv: the driver to match against |
| 41 | * |
| 42 | * Used by the bus to check if the driver wants to handle the device. |
| 43 | * |
| 44 | * Returns 1 if the class ids of the driver match the class id of the |
| 45 | * device, otherwise 0. |
| 46 | */ |
| 47 | static int i2o_bus_match(struct device *dev, struct device_driver *drv) |
| 48 | { |
| 49 | struct i2o_device *i2o_dev = to_i2o_device(dev); |
| 50 | struct i2o_driver *i2o_drv = to_i2o_driver(drv); |
| 51 | struct i2o_class_id *ids = i2o_drv->classes; |
| 52 | |
| 53 | if (ids) |
| 54 | while (ids->class_id != I2O_CLASS_END) { |
| 55 | if (ids->class_id == i2o_dev->lct_data.class_id) |
| 56 | return 1; |
| 57 | ids++; |
| 58 | } |
| 59 | return 0; |
| 60 | }; |
| 61 | |
| 62 | /* I2O bus type */ |
| 63 | struct bus_type i2o_bus_type = { |
| 64 | .name = "i2o", |
| 65 | .match = i2o_bus_match, |
Markus Lidel | 2e1973a | 2006-01-06 00:19:32 -0800 | [diff] [blame] | 66 | .dev_attrs = i2o_device_attrs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | }; |
| 68 | |
| 69 | /** |
| 70 | * i2o_driver_register - Register a I2O driver (OSM) in the I2O core |
| 71 | * @drv: I2O driver which should be registered |
| 72 | * |
| 73 | * Registers the OSM drv in the I2O core and creates an event queues if |
| 74 | * necessary. |
| 75 | * |
| 76 | * Returns 0 on success or negative error code on failure. |
| 77 | */ |
| 78 | int i2o_driver_register(struct i2o_driver *drv) |
| 79 | { |
| 80 | struct i2o_controller *c; |
| 81 | int i; |
| 82 | int rc = 0; |
| 83 | unsigned long flags; |
| 84 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 85 | osm_debug("Register driver %s\n", drv->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | if (drv->event) { |
| 88 | drv->event_queue = create_workqueue(drv->name); |
| 89 | if (!drv->event_queue) { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 90 | osm_err("Could not initialize event queue for driver " |
| 91 | "%s\n", drv->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | return -EFAULT; |
| 93 | } |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 94 | osm_debug("Event queue initialized for driver %s\n", drv->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } else |
| 96 | drv->event_queue = NULL; |
| 97 | |
| 98 | drv->driver.name = drv->name; |
| 99 | drv->driver.bus = &i2o_bus_type; |
| 100 | |
| 101 | spin_lock_irqsave(&i2o_drivers_lock, flags); |
| 102 | |
| 103 | for (i = 0; i2o_drivers[i]; i++) |
| 104 | if (i >= i2o_max_drivers) { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 105 | osm_err("too many drivers registered, increase " |
| 106 | "max_drivers\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | spin_unlock_irqrestore(&i2o_drivers_lock, flags); |
| 108 | return -EFAULT; |
| 109 | } |
| 110 | |
| 111 | drv->context = i; |
| 112 | i2o_drivers[i] = drv; |
| 113 | |
| 114 | spin_unlock_irqrestore(&i2o_drivers_lock, flags); |
| 115 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 116 | osm_debug("driver %s gets context id %d\n", drv->name, drv->context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | list_for_each_entry(c, &i2o_controllers, list) { |
| 119 | struct i2o_device *i2o_dev; |
| 120 | |
| 121 | i2o_driver_notify_controller_add(drv, c); |
| 122 | list_for_each_entry(i2o_dev, &c->devices, list) |
Markus Lidel | f33213e | 2005-06-23 22:02:23 -0700 | [diff] [blame] | 123 | i2o_driver_notify_device_add(drv, i2o_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | rc = driver_register(&drv->driver); |
Akinobu Mita | e578e9a | 2007-05-23 13:58:05 -0700 | [diff] [blame] | 127 | if (rc) { |
| 128 | if (drv->event) { |
| 129 | destroy_workqueue(drv->event_queue); |
| 130 | drv->event_queue = NULL; |
| 131 | } |
| 132 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | return rc; |
| 135 | }; |
| 136 | |
| 137 | /** |
| 138 | * i2o_driver_unregister - Unregister a I2O driver (OSM) from the I2O core |
| 139 | * @drv: I2O driver which should be unregistered |
| 140 | * |
| 141 | * Unregisters the OSM drv from the I2O core and cleanup event queues if |
| 142 | * necessary. |
| 143 | */ |
| 144 | void i2o_driver_unregister(struct i2o_driver *drv) |
| 145 | { |
| 146 | struct i2o_controller *c; |
| 147 | unsigned long flags; |
| 148 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 149 | osm_debug("unregister driver %s\n", drv->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | driver_unregister(&drv->driver); |
| 152 | |
| 153 | list_for_each_entry(c, &i2o_controllers, list) { |
| 154 | struct i2o_device *i2o_dev; |
| 155 | |
| 156 | list_for_each_entry(i2o_dev, &c->devices, list) |
| 157 | i2o_driver_notify_device_remove(drv, i2o_dev); |
| 158 | |
| 159 | i2o_driver_notify_controller_remove(drv, c); |
| 160 | } |
| 161 | |
| 162 | spin_lock_irqsave(&i2o_drivers_lock, flags); |
| 163 | i2o_drivers[drv->context] = NULL; |
| 164 | spin_unlock_irqrestore(&i2o_drivers_lock, flags); |
| 165 | |
| 166 | if (drv->event_queue) { |
| 167 | destroy_workqueue(drv->event_queue); |
| 168 | drv->event_queue = NULL; |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 169 | osm_debug("event queue removed for %s\n", drv->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | } |
| 171 | }; |
| 172 | |
| 173 | /** |
| 174 | * i2o_driver_dispatch - dispatch an I2O reply message |
| 175 | * @c: I2O controller of the message |
| 176 | * @m: I2O message number |
| 177 | * @msg: I2O message to be delivered |
| 178 | * |
| 179 | * The reply is delivered to the driver from which the original message |
| 180 | * was. This function is only called from interrupt context. |
| 181 | * |
| 182 | * Returns 0 on success and the message should not be flushed. Returns > 0 |
| 183 | * on success and if the message should be flushed afterwords. Returns |
| 184 | * negative error code on failure (the message will be flushed too). |
| 185 | */ |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 186 | int i2o_driver_dispatch(struct i2o_controller *c, u32 m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | { |
| 188 | struct i2o_driver *drv; |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 189 | struct i2o_message *msg = i2o_msg_out_to_virt(c, m); |
| 190 | u32 context = le32_to_cpu(msg->u.s.icntxt); |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 191 | unsigned long flags; |
| 192 | |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 193 | if (unlikely(context >= i2o_max_drivers)) { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 194 | osm_warn("%s: Spurious reply to unknown driver %d\n", c->name, |
| 195 | context); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 196 | return -EIO; |
| 197 | } |
| 198 | |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 199 | spin_lock_irqsave(&i2o_drivers_lock, flags); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 200 | drv = i2o_drivers[context]; |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 201 | spin_unlock_irqrestore(&i2o_drivers_lock, flags); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 202 | |
| 203 | if (unlikely(!drv)) { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 204 | osm_warn("%s: Spurious reply to unknown driver %d\n", c->name, |
| 205 | context); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 206 | return -EIO; |
| 207 | } |
| 208 | |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 209 | if ((le32_to_cpu(msg->u.head[1]) >> 24) == I2O_CMD_UTIL_EVT_REGISTER) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 210 | struct i2o_device *dev, *tmp; |
| 211 | struct i2o_event *evt; |
| 212 | u16 size; |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 213 | u16 tid = le32_to_cpu(msg->u.head[1]) & 0xfff; |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 214 | |
| 215 | osm_debug("event received from device %d\n", tid); |
| 216 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 217 | if (!drv->event) |
| 218 | return -EIO; |
| 219 | |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 220 | /* cut of header from message size (in 32-bit words) */ |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 221 | size = (le32_to_cpu(msg->u.head[0]) >> 16) - 5; |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 222 | |
Markus Lidel | f6ed39a | 2006-01-06 00:19:33 -0800 | [diff] [blame] | 223 | evt = kzalloc(size * 4 + sizeof(*evt), GFP_ATOMIC); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 224 | if (!evt) |
| 225 | return -ENOMEM; |
| 226 | |
| 227 | evt->size = size; |
Markus Lidel | 9e87545 | 2005-06-23 22:02:21 -0700 | [diff] [blame] | 228 | evt->tcntxt = le32_to_cpu(msg->u.s.tcntxt); |
| 229 | evt->event_indicator = le32_to_cpu(msg->body[0]); |
Markus Lidel | dcceafe | 2006-01-06 00:19:32 -0800 | [diff] [blame] | 230 | memcpy(&evt->data, &msg->body[1], size * 4); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 231 | |
| 232 | list_for_each_entry_safe(dev, tmp, &c->devices, list) |
| 233 | if (dev->lct_data.tid == tid) { |
| 234 | evt->i2o_dev = dev; |
| 235 | break; |
| 236 | } |
| 237 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 238 | INIT_WORK(&evt->work, drv->event); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 239 | queue_work(drv->event_queue, &evt->work); |
| 240 | return 1; |
| 241 | } |
| 242 | |
| 243 | if (unlikely(!drv->reply)) { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 244 | osm_debug("%s: Reply to driver %s, but no reply function" |
| 245 | " defined!\n", c->name, drv->name); |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 246 | return -EIO; |
| 247 | } |
| 248 | |
| 249 | return drv->reply(c, m, msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | /** |
| 253 | * i2o_driver_notify_controller_add_all - Send notify of added controller |
Randy Dunlap | d9489fb | 2006-12-06 20:38:43 -0800 | [diff] [blame] | 254 | * @c: newly added controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | * |
| 256 | * Send notifications to all registered drivers that a new controller was |
| 257 | * added. |
| 258 | */ |
| 259 | void i2o_driver_notify_controller_add_all(struct i2o_controller *c) |
| 260 | { |
| 261 | int i; |
| 262 | struct i2o_driver *drv; |
| 263 | |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 264 | for (i = 0; i < i2o_max_drivers; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | drv = i2o_drivers[i]; |
| 266 | |
| 267 | if (drv) |
| 268 | i2o_driver_notify_controller_add(drv, c); |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /** |
Randy Dunlap | d9489fb | 2006-12-06 20:38:43 -0800 | [diff] [blame] | 273 | * i2o_driver_notify_controller_remove_all - Send notify of removed controller |
| 274 | * @c: controller that is being removed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | * |
| 276 | * Send notifications to all registered drivers that a controller was |
| 277 | * removed. |
| 278 | */ |
| 279 | void i2o_driver_notify_controller_remove_all(struct i2o_controller *c) |
| 280 | { |
| 281 | int i; |
| 282 | struct i2o_driver *drv; |
| 283 | |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 284 | for (i = 0; i < i2o_max_drivers; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | drv = i2o_drivers[i]; |
| 286 | |
| 287 | if (drv) |
| 288 | i2o_driver_notify_controller_remove(drv, c); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | /** |
Randy Dunlap | d9489fb | 2006-12-06 20:38:43 -0800 | [diff] [blame] | 293 | * i2o_driver_notify_device_add_all - Send notify of added device |
| 294 | * @i2o_dev: newly added I2O device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | * |
| 296 | * Send notifications to all registered drivers that a device was added. |
| 297 | */ |
| 298 | void i2o_driver_notify_device_add_all(struct i2o_device *i2o_dev) |
| 299 | { |
| 300 | int i; |
| 301 | struct i2o_driver *drv; |
| 302 | |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 303 | for (i = 0; i < i2o_max_drivers; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | drv = i2o_drivers[i]; |
| 305 | |
| 306 | if (drv) |
| 307 | i2o_driver_notify_device_add(drv, i2o_dev); |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | /** |
Randy Dunlap | d9489fb | 2006-12-06 20:38:43 -0800 | [diff] [blame] | 312 | * i2o_driver_notify_device_remove_all - Send notify of removed device |
| 313 | * @i2o_dev: device that is being removed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | * |
| 315 | * Send notifications to all registered drivers that a device was removed. |
| 316 | */ |
| 317 | void i2o_driver_notify_device_remove_all(struct i2o_device *i2o_dev) |
| 318 | { |
| 319 | int i; |
| 320 | struct i2o_driver *drv; |
| 321 | |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 322 | for (i = 0; i < i2o_max_drivers; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | drv = i2o_drivers[i]; |
| 324 | |
| 325 | if (drv) |
| 326 | i2o_driver_notify_device_remove(drv, i2o_dev); |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * i2o_driver_init - initialize I2O drivers (OSMs) |
| 332 | * |
| 333 | * Registers the I2O bus and allocate memory for the array of OSMs. |
| 334 | * |
| 335 | * Returns 0 on success or negative error code on failure. |
| 336 | */ |
| 337 | int __init i2o_driver_init(void) |
| 338 | { |
| 339 | int rc = 0; |
| 340 | |
| 341 | spin_lock_init(&i2o_drivers_lock); |
| 342 | |
| 343 | if ((i2o_max_drivers < 2) || (i2o_max_drivers > 64) || |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 344 | !is_power_of_2(i2o_max_drivers)) { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 345 | osm_warn("max_drivers set to %d, but must be >=2 and <= 64 and " |
| 346 | "a power of 2\n", i2o_max_drivers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | i2o_max_drivers = I2O_MAX_DRIVERS; |
| 348 | } |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 349 | osm_info("max drivers = %d\n", i2o_max_drivers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
| 351 | i2o_drivers = |
Akinobu Mita | be32479 | 2007-05-23 13:58:06 -0700 | [diff] [blame^] | 352 | kcalloc(i2o_max_drivers, sizeof(*i2o_drivers), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | if (!i2o_drivers) |
| 354 | return -ENOMEM; |
| 355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | rc = bus_register(&i2o_bus_type); |
| 357 | |
| 358 | if (rc < 0) |
| 359 | kfree(i2o_drivers); |
| 360 | |
| 361 | return rc; |
| 362 | }; |
| 363 | |
| 364 | /** |
| 365 | * i2o_driver_exit - clean up I2O drivers (OSMs) |
| 366 | * |
Randy Dunlap | d9489fb | 2006-12-06 20:38:43 -0800 | [diff] [blame] | 367 | * Unregisters the I2O bus and frees driver array. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | */ |
Ralf Baechle | d784372 | 2006-12-13 00:33:53 -0800 | [diff] [blame] | 369 | void i2o_driver_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | { |
| 371 | bus_unregister(&i2o_bus_type); |
| 372 | kfree(i2o_drivers); |
| 373 | }; |
| 374 | |
| 375 | EXPORT_SYMBOL(i2o_driver_register); |
| 376 | EXPORT_SYMBOL(i2o_driver_unregister); |
| 377 | EXPORT_SYMBOL(i2o_driver_notify_controller_add_all); |
| 378 | EXPORT_SYMBOL(i2o_driver_notify_controller_remove_all); |
| 379 | EXPORT_SYMBOL(i2o_driver_notify_device_add_all); |
| 380 | EXPORT_SYMBOL(i2o_driver_notify_device_remove_all); |