3 * Generic driver template
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
8 * To use this template, you must at least define the following (samples
9 * given for the MGA driver):
12 * #define DRIVER_AUTHOR "VA Linux Systems, Inc."
14 * #define DRIVER_NAME "mga"
15 * #define DRIVER_DESC "Matrox G200/G400"
16 * #define DRIVER_DATE "20001127"
18 * #define drm_x mga_##x
23 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
25 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
26 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
27 * All Rights Reserved.
29 * Permission is hereby granted, free of charge, to any person obtaining a
30 * copy of this software and associated documentation files (the "Software"),
31 * to deal in the Software without restriction, including without limitation
32 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
33 * and/or sell copies of the Software, and to permit persons to whom the
34 * Software is furnished to do so, subject to the following conditions:
36 * The above copyright notice and this permission notice (including the next
37 * paragraph) shall be included in all copies or substantial portions of the
40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
41 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
42 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
43 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
44 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
45 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
46 * OTHER DEALINGS IN THE SOFTWARE.
49 #include <linux/debugfs.h>
50 #include <linux/slab.h>
55 static int drm_version(struct drm_device *dev, void *data,
56 struct drm_file *file_priv);
58 #define DRM_IOCTL_DEF(ioctl, _func, _flags) \
59 [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0}
62 static struct drm_ioctl_desc drm_ioctls[] = {
63 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED),
64 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
65 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
66 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
67 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, DRM_UNLOCKED),
68 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED),
69 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED),
70 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
71 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),
73 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
74 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
75 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
76 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER),
78 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
79 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
81 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
82 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
84 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
85 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
87 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
88 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
89 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
90 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
91 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
92 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
93 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
95 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
96 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
98 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
99 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
101 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
103 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
104 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
105 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
106 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
107 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
108 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
109 DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH),
111 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
115 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
118 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
119 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
120 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
121 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
124 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
125 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
127 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
129 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
131 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
133 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
134 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
135 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
137 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
139 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED),
140 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED),
142 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
143 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
144 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
145 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
146 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
147 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
148 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED),
149 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
150 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
151 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
152 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
153 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
154 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
155 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
156 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
157 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
158 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
159 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
160 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
161 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
162 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
163 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
164 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
165 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
166 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
167 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
170 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
173 * Take down the DRM device.
175 * \param dev DRM device structure.
177 * Frees every resource in \p dev.
181 int drm_lastclose(struct drm_device * dev)
183 struct drm_vma_entry *vma, *vma_temp;
188 if (dev->driver->lastclose)
189 dev->driver->lastclose(dev);
190 DRM_DEBUG("driver lastclose completed\n");
192 if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET))
193 drm_irq_uninstall(dev);
195 mutex_lock(&dev->struct_mutex);
197 /* Clear AGP information */
198 if (drm_core_has_AGP(dev) && dev->agp &&
199 !drm_core_check_feature(dev, DRIVER_MODESET)) {
200 struct drm_agp_mem *entry, *tempe;
202 /* Remove AGP resources, but leave dev->agp
203 intact until drv_cleanup is called. */
204 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
206 drm_unbind_agp(entry->memory);
207 drm_free_agp(entry->memory, entry->pages);
210 INIT_LIST_HEAD(&dev->agp->memory);
212 if (dev->agp->acquired)
213 drm_agp_release(dev);
215 dev->agp->acquired = 0;
216 dev->agp->enabled = 0;
218 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg &&
219 !drm_core_check_feature(dev, DRIVER_MODESET)) {
220 drm_sg_cleanup(dev->sg);
224 /* Clear vma list (only built for debugging) */
225 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
226 list_del(&vma->head);
230 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
231 for (i = 0; i < dev->queue_count; i++) {
232 kfree(dev->queuelist[i]);
233 dev->queuelist[i] = NULL;
235 kfree(dev->queuelist);
236 dev->queuelist = NULL;
238 dev->queue_count = 0;
240 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
241 !drm_core_check_feature(dev, DRIVER_MODESET))
242 drm_dma_takedown(dev);
244 dev->dev_mapping = NULL;
245 mutex_unlock(&dev->struct_mutex);
247 DRM_DEBUG("lastclose completed\n");
251 /** File operations structure */
252 static const struct file_operations drm_stub_fops = {
253 .owner = THIS_MODULE,
254 .open = drm_stub_open,
255 .llseek = noop_llseek,
258 static int __init drm_core_init(void)
263 idr_init(&drm_minors_idr);
265 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
268 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
269 if (IS_ERR(drm_class)) {
270 printk(KERN_ERR "DRM: Error creating drm class.\n");
271 ret = PTR_ERR(drm_class);
275 drm_proc_root = proc_mkdir("dri", NULL);
276 if (!drm_proc_root) {
277 DRM_ERROR("Cannot create /proc/dri\n");
282 drm_debugfs_root = debugfs_create_dir("dri", NULL);
283 if (!drm_debugfs_root) {
284 DRM_ERROR("Cannot create /sys/kernel/debug/dri\n");
289 DRM_INFO("Initialized %s %d.%d.%d %s\n",
290 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
295 unregister_chrdev(DRM_MAJOR, "drm");
297 idr_destroy(&drm_minors_idr);
302 static void __exit drm_core_exit(void)
304 remove_proc_entry("dri", NULL);
305 debugfs_remove(drm_debugfs_root);
308 unregister_chrdev(DRM_MAJOR, "drm");
310 idr_remove_all(&drm_minors_idr);
311 idr_destroy(&drm_minors_idr);
314 module_init(drm_core_init);
315 module_exit(drm_core_exit);
318 * Copy and IOCTL return string to user space
320 static int drm_copy_field(char *buf, size_t *buf_len, const char *value)
324 /* don't overflow userbuf */
329 /* let userspace know exact length of driver value (which could be
330 * larger than the userspace-supplied buffer) */
331 *buf_len = strlen(value);
333 /* finally, try filling in the userbuf */
335 if (copy_to_user(buf, value, len))
341 * Get version information
343 * \param inode device inode.
344 * \param filp file pointer.
345 * \param cmd command.
346 * \param arg user argument, pointing to a drm_version structure.
347 * \return zero on success or negative number on failure.
349 * Fills in the version information in \p arg.
351 static int drm_version(struct drm_device *dev, void *data,
352 struct drm_file *file_priv)
354 struct drm_version *version = data;
357 version->version_major = dev->driver->major;
358 version->version_minor = dev->driver->minor;
359 version->version_patchlevel = dev->driver->patchlevel;
360 err = drm_copy_field(version->name, &version->name_len,
363 err = drm_copy_field(version->date, &version->date_len,
366 err = drm_copy_field(version->desc, &version->desc_len,
373 * Called whenever a process performs an ioctl on /dev/drm.
375 * \param inode device inode.
376 * \param file_priv DRM file private.
377 * \param cmd command.
378 * \param arg user argument.
379 * \return zero on success or negative number on failure.
381 * Looks up the ioctl function in the ::ioctls table, checking for root
382 * previleges if so required, and dispatches to the respective function.
384 long drm_ioctl(struct file *filp,
385 unsigned int cmd, unsigned long arg)
387 struct drm_file *file_priv = filp->private_data;
388 struct drm_device *dev;
389 struct drm_ioctl_desc *ioctl;
391 unsigned int nr = DRM_IOCTL_NR(cmd);
392 int retcode = -EINVAL;
393 char stack_kdata[128];
395 unsigned int usize, asize;
397 dev = file_priv->minor->dev;
399 if (drm_device_is_unplugged(dev))
402 atomic_inc(&dev->ioctl_count);
403 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
404 ++file_priv->ioctl_count;
406 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
407 task_pid_nr(current), cmd, nr,
408 (long)old_encode_dev(file_priv->minor->device),
409 file_priv->authenticated);
411 if ((nr >= DRM_CORE_IOCTL_COUNT) &&
412 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
414 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
415 (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
417 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
418 drv_size = _IOC_SIZE(ioctl->cmd_drv);
419 usize = asize = _IOC_SIZE(cmd);
420 if (drv_size > asize)
423 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
424 ioctl = &drm_ioctls[nr];
426 usize = asize = _IOC_SIZE(cmd);
430 /* Do not trust userspace, use our own definition */
432 /* is there a local override? */
433 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
434 func = dev->driver->dma_ioctl;
437 DRM_DEBUG("no function\n");
439 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
440 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
441 ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) ||
442 (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) {
445 if (cmd & (IOC_IN | IOC_OUT)) {
446 if (asize <= sizeof(stack_kdata)) {
449 kdata = kmalloc(asize, GFP_KERNEL);
456 memset(kdata + usize, 0, asize - usize);
460 if (copy_from_user(kdata, (void __user *)arg,
466 memset(kdata, 0, usize);
468 if (ioctl->flags & DRM_UNLOCKED)
469 retcode = func(dev, kdata, file_priv);
471 mutex_lock(&drm_global_mutex);
472 retcode = func(dev, kdata, file_priv);
473 mutex_unlock(&drm_global_mutex);
477 if (copy_to_user((void __user *)arg, kdata,
484 if (kdata != stack_kdata)
486 atomic_dec(&dev->ioctl_count);
488 DRM_DEBUG("ret = %x\n", retcode);
492 EXPORT_SYMBOL(drm_ioctl);
494 struct drm_local_map *drm_getsarea(struct drm_device *dev)
496 struct drm_map_list *entry;
498 list_for_each_entry(entry, &dev->maplist, head) {
499 if (entry->map && entry->map->type == _DRM_SHM &&
500 (entry->map->flags & _DRM_CONTAINS_LOCK)) {
506 EXPORT_SYMBOL(drm_getsarea);