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.
52 static int drm_version(struct drm_device
*dev
, void *data
,
53 struct drm_file
*file_priv
);
56 static struct drm_ioctl_desc drm_ioctls
[] = {
57 DRM_IOCTL_DEF(DRM_IOCTL_VERSION
, drm_version
, 0),
58 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE
, drm_getunique
, 0),
59 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC
, drm_getmagic
, 0),
60 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID
, drm_irq_by_busid
, DRM_MASTER
|DRM_ROOT_ONLY
),
61 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP
, drm_getmap
, 0),
62 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT
, drm_getclient
, 0),
63 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS
, drm_getstats
, 0),
64 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION
, drm_setversion
, DRM_MASTER
|DRM_ROOT_ONLY
),
66 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE
, drm_setunique
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
67 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
68 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK
, drm_noop
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
69 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC
, drm_authmagic
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
71 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP
, drm_addmap_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
72 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP
, drm_rmmap_ioctl
, DRM_AUTH
),
74 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX
, drm_setsareactx
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
75 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX
, drm_getsareactx
, DRM_AUTH
),
77 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER
, drm_setmaster_ioctl
, DRM_ROOT_ONLY
),
78 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER
, drm_dropmaster_ioctl
, DRM_ROOT_ONLY
),
80 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX
, drm_addctx
, DRM_AUTH
|DRM_ROOT_ONLY
),
81 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX
, drm_rmctx
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
82 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX
, drm_modctx
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
83 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX
, drm_getctx
, DRM_AUTH
),
84 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX
, drm_switchctx
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
85 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX
, drm_newctx
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
86 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX
, drm_resctx
, DRM_AUTH
),
88 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW
, drm_adddraw
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
89 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW
, drm_rmdraw
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
91 DRM_IOCTL_DEF(DRM_IOCTL_LOCK
, drm_lock
, DRM_AUTH
),
92 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK
, drm_unlock
, DRM_AUTH
),
94 DRM_IOCTL_DEF(DRM_IOCTL_FINISH
, drm_noop
, DRM_AUTH
),
96 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS
, drm_addbufs
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
97 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS
, drm_markbufs
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
98 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS
, drm_infobufs
, DRM_AUTH
),
99 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS
, drm_mapbufs
, DRM_AUTH
),
100 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS
, drm_freebufs
, DRM_AUTH
),
101 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
102 DRM_IOCTL_DEF(DRM_IOCTL_DMA
, NULL
, DRM_AUTH
),
104 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL
, drm_control
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
107 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE
, drm_agp_acquire_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
108 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE
, drm_agp_release_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE
, drm_agp_enable_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO
, drm_agp_info_ioctl
, DRM_AUTH
),
111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC
, drm_agp_alloc_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE
, drm_agp_free_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND
, drm_agp_bind_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND
, drm_agp_unbind_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
117 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC
, drm_sg_alloc_ioctl
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
118 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE
, drm_sg_free
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
120 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK
, drm_wait_vblank
, 0),
122 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL
, drm_modeset_ctl
, 0),
124 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW
, drm_update_drawable_info
, DRM_AUTH
|DRM_MASTER
|DRM_ROOT_ONLY
),
126 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE
, drm_gem_close_ioctl
, 0),
127 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK
, drm_gem_flink_ioctl
, DRM_AUTH
),
128 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN
, drm_gem_open_ioctl
, DRM_AUTH
),
130 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES
, drm_mode_getresources
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
131 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC
, drm_mode_getcrtc
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
132 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC
, drm_mode_setcrtc
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
133 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR
, drm_mode_cursor_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
134 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA
, drm_mode_gamma_get_ioctl
, DRM_MASTER
),
135 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA
, drm_mode_gamma_set_ioctl
, DRM_MASTER
),
136 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER
, drm_mode_getencoder
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
137 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR
, drm_mode_getconnector
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
138 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE
, drm_mode_attachmode_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
139 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE
, drm_mode_detachmode_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
140 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY
, drm_mode_getproperty_ioctl
, DRM_MASTER
| DRM_CONTROL_ALLOW
),
141 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY
, drm_mode_connector_property_set_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
142 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB
, drm_mode_getblob_ioctl
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
143 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB
, drm_mode_getfb
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
144 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB
, drm_mode_addfb
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
145 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB
, drm_mode_rmfb
, DRM_MASTER
|DRM_CONTROL_ALLOW
),
148 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
151 * Take down the DRM device.
153 * \param dev DRM device structure.
155 * Frees every resource in \p dev.
159 int drm_lastclose(struct drm_device
* dev
)
161 struct drm_vma_entry
*vma
, *vma_temp
;
166 if (dev
->driver
->lastclose
)
167 dev
->driver
->lastclose(dev
);
168 DRM_DEBUG("driver lastclose completed\n");
170 if (dev
->irq_enabled
&& !drm_core_check_feature(dev
, DRIVER_MODESET
))
171 drm_irq_uninstall(dev
);
173 mutex_lock(&dev
->struct_mutex
);
175 /* Free drawable information memory */
176 drm_drawable_free_all(dev
);
177 del_timer(&dev
->timer
);
179 /* Clear AGP information */
180 if (drm_core_has_AGP(dev
) && dev
->agp
&&
181 !drm_core_check_feature(dev
, DRIVER_MODESET
)) {
182 struct drm_agp_mem
*entry
, *tempe
;
184 /* Remove AGP resources, but leave dev->agp
185 intact until drv_cleanup is called. */
186 list_for_each_entry_safe(entry
, tempe
, &dev
->agp
->memory
, head
) {
188 drm_unbind_agp(entry
->memory
);
189 drm_free_agp(entry
->memory
, entry
->pages
);
190 drm_free(entry
, sizeof(*entry
), DRM_MEM_AGPLISTS
);
192 INIT_LIST_HEAD(&dev
->agp
->memory
);
194 if (dev
->agp
->acquired
)
195 drm_agp_release(dev
);
197 dev
->agp
->acquired
= 0;
198 dev
->agp
->enabled
= 0;
200 if (drm_core_check_feature(dev
, DRIVER_SG
) && dev
->sg
&&
201 !drm_core_check_feature(dev
, DRIVER_MODESET
)) {
202 drm_sg_cleanup(dev
->sg
);
206 /* Clear vma list (only built for debugging) */
207 list_for_each_entry_safe(vma
, vma_temp
, &dev
->vmalist
, head
) {
208 list_del(&vma
->head
);
209 drm_free(vma
, sizeof(*vma
), DRM_MEM_VMAS
);
212 if (drm_core_check_feature(dev
, DRIVER_DMA_QUEUE
) && dev
->queuelist
) {
213 for (i
= 0; i
< dev
->queue_count
; i
++) {
214 if (dev
->queuelist
[i
]) {
215 drm_free(dev
->queuelist
[i
],
216 sizeof(*dev
->queuelist
[0]),
218 dev
->queuelist
[i
] = NULL
;
221 drm_free(dev
->queuelist
,
222 dev
->queue_slots
* sizeof(*dev
->queuelist
),
224 dev
->queuelist
= NULL
;
226 dev
->queue_count
= 0;
228 if (drm_core_check_feature(dev
, DRIVER_HAVE_DMA
) &&
229 !drm_core_check_feature(dev
, DRIVER_MODESET
))
230 drm_dma_takedown(dev
);
232 dev
->dev_mapping
= NULL
;
233 mutex_unlock(&dev
->struct_mutex
);
235 DRM_DEBUG("lastclose completed\n");
240 * Module initialization. Called via init_module at module load time, or via
241 * linux/init/main.c (this is not currently supported).
243 * \return zero on success or a negative number on failure.
245 * Initializes an array of drm_device structures, and attempts to
246 * initialize all available devices, using consecutive minors, registering the
247 * stubs and initializing the AGP device.
249 * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
250 * after the initialization for driver customization.
252 int drm_init(struct drm_driver
*driver
)
254 struct pci_dev
*pdev
= NULL
;
255 struct pci_device_id
*pid
;
260 INIT_LIST_HEAD(&driver
->device_list
);
262 for (i
= 0; driver
->pci_driver
.id_table
[i
].vendor
!= 0; i
++) {
263 pid
= (struct pci_device_id
*)&driver
->pci_driver
.id_table
[i
];
265 /* Loop around setting up a DRM device for each PCI device
266 * matching our ID and device class. If we had the internal
267 * function that pci_get_subsys and pci_get_class used, we'd
268 * be able to just pass pid in instead of doing a two-stage
273 pci_get_subsys(pid
->vendor
, pid
->device
, pid
->subvendor
,
274 pid
->subdevice
, pdev
)) != NULL
) {
275 if ((pdev
->class & pid
->class_mask
) != pid
->class)
278 /* stealth mode requires a manual probe */
280 drm_get_dev(pdev
, pid
, driver
);
286 EXPORT_SYMBOL(drm_init
);
289 * Called via cleanup_module() at module unload time.
291 * Cleans up all DRM device, calling drm_lastclose().
295 static void drm_cleanup(struct drm_device
* dev
)
300 DRM_ERROR("cleanup called no dev\n");
304 drm_vblank_cleanup(dev
);
308 if (drm_core_has_MTRR(dev
) && drm_core_has_AGP(dev
) &&
309 dev
->agp
&& dev
->agp
->agp_mtrr
>= 0) {
311 retval
= mtrr_del(dev
->agp
->agp_mtrr
,
312 dev
->agp
->agp_info
.aper_base
,
313 dev
->agp
->agp_info
.aper_size
* 1024 * 1024);
314 DRM_DEBUG("mtrr_del=%d\n", retval
);
317 if (dev
->driver
->unload
)
318 dev
->driver
->unload(dev
);
320 if (drm_core_has_AGP(dev
) && dev
->agp
) {
321 drm_free(dev
->agp
, sizeof(*dev
->agp
), DRM_MEM_AGPLISTS
);
325 drm_ht_remove(&dev
->map_hash
);
326 drm_ctxbitmap_cleanup(dev
);
328 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
329 drm_put_minor(&dev
->control
);
331 if (dev
->driver
->driver_features
& DRIVER_GEM
)
332 drm_gem_destroy(dev
);
334 drm_put_minor(&dev
->primary
);
335 if (drm_put_dev(dev
))
336 DRM_ERROR("Cannot unload module\n");
339 void drm_exit(struct drm_driver
*driver
)
341 struct drm_device
*dev
, *tmp
;
344 list_for_each_entry_safe(dev
, tmp
, &driver
->device_list
, driver_item
)
347 DRM_INFO("Module unloaded\n");
350 EXPORT_SYMBOL(drm_exit
);
352 /** File operations structure */
353 static const struct file_operations drm_stub_fops
= {
354 .owner
= THIS_MODULE
,
355 .open
= drm_stub_open
358 static int __init
drm_core_init(void)
362 idr_init(&drm_minors_idr
);
364 if (register_chrdev(DRM_MAJOR
, "drm", &drm_stub_fops
))
367 drm_class
= drm_sysfs_create(THIS_MODULE
, "drm");
368 if (IS_ERR(drm_class
)) {
369 printk(KERN_ERR
"DRM: Error creating drm class.\n");
370 ret
= PTR_ERR(drm_class
);
374 drm_proc_root
= proc_mkdir("dri", NULL
);
375 if (!drm_proc_root
) {
376 DRM_ERROR("Cannot create /proc/dri\n");
383 DRM_INFO("Initialized %s %d.%d.%d %s\n",
384 CORE_NAME
, CORE_MAJOR
, CORE_MINOR
, CORE_PATCHLEVEL
, CORE_DATE
);
389 unregister_chrdev(DRM_MAJOR
, "drm");
391 idr_destroy(&drm_minors_idr
);
396 static void __exit
drm_core_exit(void)
398 remove_proc_entry("dri", NULL
);
401 unregister_chrdev(DRM_MAJOR
, "drm");
403 idr_destroy(&drm_minors_idr
);
406 module_init(drm_core_init
);
407 module_exit(drm_core_exit
);
410 * Get version information
412 * \param inode device inode.
413 * \param filp file pointer.
414 * \param cmd command.
415 * \param arg user argument, pointing to a drm_version structure.
416 * \return zero on success or negative number on failure.
418 * Fills in the version information in \p arg.
420 static int drm_version(struct drm_device
*dev
, void *data
,
421 struct drm_file
*file_priv
)
423 struct drm_version
*version
= data
;
426 version
->version_major
= dev
->driver
->major
;
427 version
->version_minor
= dev
->driver
->minor
;
428 version
->version_patchlevel
= dev
->driver
->patchlevel
;
429 DRM_COPY(version
->name
, dev
->driver
->name
);
430 DRM_COPY(version
->date
, dev
->driver
->date
);
431 DRM_COPY(version
->desc
, dev
->driver
->desc
);
437 * Called whenever a process performs an ioctl on /dev/drm.
439 * \param inode device inode.
440 * \param file_priv DRM file private.
441 * \param cmd command.
442 * \param arg user argument.
443 * \return zero on success or negative number on failure.
445 * Looks up the ioctl function in the ::ioctls table, checking for root
446 * previleges if so required, and dispatches to the respective function.
448 int drm_ioctl(struct inode
*inode
, struct file
*filp
,
449 unsigned int cmd
, unsigned long arg
)
451 struct drm_file
*file_priv
= filp
->private_data
;
452 struct drm_device
*dev
= file_priv
->minor
->dev
;
453 struct drm_ioctl_desc
*ioctl
;
455 unsigned int nr
= DRM_IOCTL_NR(cmd
);
456 int retcode
= -EINVAL
;
459 atomic_inc(&dev
->ioctl_count
);
460 atomic_inc(&dev
->counts
[_DRM_STAT_IOCTLS
]);
461 ++file_priv
->ioctl_count
;
463 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
464 task_pid_nr(current
), cmd
, nr
,
465 (long)old_encode_dev(file_priv
->minor
->device
),
466 file_priv
->authenticated
);
468 if ((nr
>= DRM_CORE_IOCTL_COUNT
) &&
469 ((nr
< DRM_COMMAND_BASE
) || (nr
>= DRM_COMMAND_END
)))
471 if ((nr
>= DRM_COMMAND_BASE
) && (nr
< DRM_COMMAND_END
) &&
472 (nr
< DRM_COMMAND_BASE
+ dev
->driver
->num_ioctls
))
473 ioctl
= &dev
->driver
->ioctls
[nr
- DRM_COMMAND_BASE
];
474 else if ((nr
>= DRM_COMMAND_END
) || (nr
< DRM_COMMAND_BASE
)) {
475 ioctl
= &drm_ioctls
[nr
];
480 /* Do not trust userspace, use our own definition */
482 /* is there a local override? */
483 if ((nr
== DRM_IOCTL_NR(DRM_IOCTL_DMA
)) && dev
->driver
->dma_ioctl
)
484 func
= dev
->driver
->dma_ioctl
;
487 DRM_DEBUG("no function\n");
489 } else if (((ioctl
->flags
& DRM_ROOT_ONLY
) && !capable(CAP_SYS_ADMIN
)) ||
490 ((ioctl
->flags
& DRM_AUTH
) && !file_priv
->authenticated
) ||
491 ((ioctl
->flags
& DRM_MASTER
) && !file_priv
->is_master
)) {
494 if (cmd
& (IOC_IN
| IOC_OUT
)) {
495 kdata
= kmalloc(_IOC_SIZE(cmd
), GFP_KERNEL
);
503 if (copy_from_user(kdata
, (void __user
*)arg
,
504 _IOC_SIZE(cmd
)) != 0) {
509 retcode
= func(dev
, kdata
, file_priv
);
511 if ((retcode
== 0) && (cmd
& IOC_OUT
)) {
512 if (copy_to_user((void __user
*)arg
, kdata
,
513 _IOC_SIZE(cmd
)) != 0)
521 atomic_dec(&dev
->ioctl_count
);
523 DRM_DEBUG("ret = %x\n", retcode
);
527 EXPORT_SYMBOL(drm_ioctl
);
529 drm_local_map_t
*drm_getsarea(struct drm_device
*dev
)
531 struct drm_map_list
*entry
;
533 list_for_each_entry(entry
, &dev
->maplist
, head
) {
534 if (entry
->map
&& entry
->map
->type
== _DRM_SHM
&&
535 (entry
->map
->flags
& _DRM_CONTAINS_LOCK
)) {
541 EXPORT_SYMBOL(drm_getsarea
);