5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
9 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
11 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
12 * All Rights Reserved.
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
21 * The above copyright notice and this permission notice (including the next
22 * paragraph) shall be included in all copies or substantial portions of the
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
28 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
29 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
30 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
31 * DEALINGS IN THE SOFTWARE.
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/slab.h>
40 unsigned int drm_debug
= 0; /* 1 to enable debug output */
41 EXPORT_SYMBOL(drm_debug
);
43 MODULE_AUTHOR(CORE_AUTHOR
);
44 MODULE_DESCRIPTION(CORE_DESC
);
45 MODULE_LICENSE("GPL and additional rights");
46 MODULE_PARM_DESC(debug
, "Enable debug output");
48 module_param_named(debug
, drm_debug
, int, 0600);
50 struct idr drm_minors_idr
;
52 struct class *drm_class
;
53 struct proc_dir_entry
*drm_proc_root
;
54 struct dentry
*drm_debugfs_root
;
55 void drm_ut_debug_printk(unsigned int request_level
,
57 const char *function_name
,
58 const char *format
, ...)
62 if (drm_debug
& request_level
) {
64 printk(KERN_DEBUG
"[%s:%s], ", prefix
, function_name
);
65 va_start(args
, format
);
66 vprintk(format
, args
);
70 EXPORT_SYMBOL(drm_ut_debug_printk
);
71 static int drm_minor_get_id(struct drm_device
*dev
, int type
)
75 int base
= 0, limit
= 63;
77 if (type
== DRM_MINOR_CONTROL
) {
80 } else if (type
== DRM_MINOR_RENDER
) {
86 if (idr_pre_get(&drm_minors_idr
, GFP_KERNEL
) == 0) {
87 DRM_ERROR("Out of memory expanding drawable idr\n");
90 mutex_lock(&dev
->struct_mutex
);
91 ret
= idr_get_new_above(&drm_minors_idr
, NULL
,
93 mutex_unlock(&dev
->struct_mutex
);
100 if (new_id
>= limit
) {
101 idr_remove(&drm_minors_idr
, new_id
);
107 struct drm_master
*drm_master_create(struct drm_minor
*minor
)
109 struct drm_master
*master
;
111 master
= kzalloc(sizeof(*master
), GFP_KERNEL
);
115 kref_init(&master
->refcount
);
116 spin_lock_init(&master
->lock
.spinlock
);
117 init_waitqueue_head(&master
->lock
.lock_queue
);
118 drm_ht_create(&master
->magiclist
, DRM_MAGIC_HASH_ORDER
);
119 INIT_LIST_HEAD(&master
->magicfree
);
120 master
->minor
= minor
;
122 list_add_tail(&master
->head
, &minor
->master_list
);
127 struct drm_master
*drm_master_get(struct drm_master
*master
)
129 kref_get(&master
->refcount
);
132 EXPORT_SYMBOL(drm_master_get
);
134 static void drm_master_destroy(struct kref
*kref
)
136 struct drm_master
*master
= container_of(kref
, struct drm_master
, refcount
);
137 struct drm_magic_entry
*pt
, *next
;
138 struct drm_device
*dev
= master
->minor
->dev
;
139 struct drm_map_list
*r_list
, *list_temp
;
141 list_del(&master
->head
);
143 if (dev
->driver
->master_destroy
)
144 dev
->driver
->master_destroy(dev
, master
);
146 list_for_each_entry_safe(r_list
, list_temp
, &dev
->maplist
, head
) {
147 if (r_list
->master
== master
) {
148 drm_rmmap_locked(dev
, r_list
->map
);
153 if (master
->unique
) {
154 kfree(master
->unique
);
155 master
->unique
= NULL
;
156 master
->unique_len
= 0;
162 list_for_each_entry_safe(pt
, next
, &master
->magicfree
, head
) {
164 drm_ht_remove_item(&master
->magiclist
, &pt
->hash_item
);
168 drm_ht_remove(&master
->magiclist
);
173 void drm_master_put(struct drm_master
**master
)
175 kref_put(&(*master
)->refcount
, drm_master_destroy
);
178 EXPORT_SYMBOL(drm_master_put
);
180 int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
181 struct drm_file
*file_priv
)
185 if (file_priv
->is_master
)
188 if (file_priv
->minor
->master
&& file_priv
->minor
->master
!= file_priv
->master
)
191 if (!file_priv
->master
)
194 if (!file_priv
->minor
->master
&&
195 file_priv
->minor
->master
!= file_priv
->master
) {
196 mutex_lock(&dev
->struct_mutex
);
197 file_priv
->minor
->master
= drm_master_get(file_priv
->master
);
198 file_priv
->is_master
= 1;
199 if (dev
->driver
->master_set
) {
200 ret
= dev
->driver
->master_set(dev
, file_priv
, false);
201 if (unlikely(ret
!= 0)) {
202 file_priv
->is_master
= 0;
203 drm_master_put(&file_priv
->minor
->master
);
206 mutex_unlock(&dev
->struct_mutex
);
212 int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
213 struct drm_file
*file_priv
)
215 if (!file_priv
->is_master
)
218 if (!file_priv
->minor
->master
)
221 mutex_lock(&dev
->struct_mutex
);
222 if (dev
->driver
->master_drop
)
223 dev
->driver
->master_drop(dev
, file_priv
, false);
224 drm_master_put(&file_priv
->minor
->master
);
225 file_priv
->is_master
= 0;
226 mutex_unlock(&dev
->struct_mutex
);
230 int drm_fill_in_dev(struct drm_device
*dev
,
231 const struct pci_device_id
*ent
,
232 struct drm_driver
*driver
)
236 INIT_LIST_HEAD(&dev
->filelist
);
237 INIT_LIST_HEAD(&dev
->ctxlist
);
238 INIT_LIST_HEAD(&dev
->vmalist
);
239 INIT_LIST_HEAD(&dev
->maplist
);
240 INIT_LIST_HEAD(&dev
->vblank_event_list
);
242 spin_lock_init(&dev
->count_lock
);
243 spin_lock_init(&dev
->drw_lock
);
244 spin_lock_init(&dev
->event_lock
);
245 init_timer(&dev
->timer
);
246 mutex_init(&dev
->struct_mutex
);
247 mutex_init(&dev
->ctxlist_mutex
);
249 idr_init(&dev
->drw_idr
);
251 if (drm_ht_create(&dev
->map_hash
, 12)) {
255 /* the DRM has 6 basic counters */
257 dev
->types
[0] = _DRM_STAT_LOCK
;
258 dev
->types
[1] = _DRM_STAT_OPENS
;
259 dev
->types
[2] = _DRM_STAT_CLOSES
;
260 dev
->types
[3] = _DRM_STAT_IOCTLS
;
261 dev
->types
[4] = _DRM_STAT_LOCKS
;
262 dev
->types
[5] = _DRM_STAT_UNLOCKS
;
264 dev
->driver
= driver
;
266 if (drm_core_has_AGP(dev
)) {
267 if (drm_device_is_agp(dev
))
268 dev
->agp
= drm_agp_init(dev
);
269 if (drm_core_check_feature(dev
, DRIVER_REQUIRE_AGP
)
270 && (dev
->agp
== NULL
)) {
271 DRM_ERROR("Cannot initialize the agpgart module.\n");
273 goto error_out_unreg
;
275 if (drm_core_has_MTRR(dev
)) {
278 mtrr_add(dev
->agp
->agp_info
.aper_base
,
279 dev
->agp
->agp_info
.aper_size
*
280 1024 * 1024, MTRR_TYPE_WRCOMB
, 1);
285 retcode
= drm_ctxbitmap_init(dev
);
287 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
288 goto error_out_unreg
;
291 if (driver
->driver_features
& DRIVER_GEM
) {
292 retcode
= drm_gem_init(dev
);
294 DRM_ERROR("Cannot initialize graphics execution "
296 goto error_out_unreg
;
309 * Get a secondary minor number.
311 * \param dev device data structure
312 * \param sec-minor structure to hold the assigned minor
313 * \return negative number on failure.
315 * Search an empty entry and initialize it to the given parameters, and
316 * create the proc init entry via proc_init(). This routines assigns
317 * minor numbers to secondary heads of multi-headed cards
319 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
)
321 struct drm_minor
*new_minor
;
327 minor_id
= drm_minor_get_id(dev
, type
);
331 new_minor
= kzalloc(sizeof(struct drm_minor
), GFP_KERNEL
);
337 new_minor
->type
= type
;
338 new_minor
->device
= MKDEV(DRM_MAJOR
, minor_id
);
339 new_minor
->dev
= dev
;
340 new_minor
->index
= minor_id
;
341 INIT_LIST_HEAD(&new_minor
->master_list
);
343 idr_replace(&drm_minors_idr
, new_minor
, minor_id
);
345 if (type
== DRM_MINOR_LEGACY
) {
346 ret
= drm_proc_init(new_minor
, minor_id
, drm_proc_root
);
348 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
352 new_minor
->proc_root
= NULL
;
354 #if defined(CONFIG_DEBUG_FS)
355 ret
= drm_debugfs_init(new_minor
, minor_id
, drm_debugfs_root
);
357 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
362 ret
= drm_sysfs_device_add(new_minor
);
365 "DRM: Error sysfs_device_add.\n");
370 DRM_DEBUG("new minor assigned %d\n", minor_id
);
375 if (new_minor
->type
== DRM_MINOR_LEGACY
)
376 drm_proc_cleanup(new_minor
, drm_proc_root
);
380 idr_remove(&drm_minors_idr
, minor_id
);
386 * Put a secondary minor number.
388 * \param sec_minor - structure to be released
389 * \return always zero
391 * Cleans up the proc resources. Not legal for this to be the
392 * last minor released.
395 int drm_put_minor(struct drm_minor
**minor_p
)
397 struct drm_minor
*minor
= *minor_p
;
399 DRM_DEBUG("release secondary minor %d\n", minor
->index
);
401 if (minor
->type
== DRM_MINOR_LEGACY
)
402 drm_proc_cleanup(minor
, drm_proc_root
);
403 #if defined(CONFIG_DEBUG_FS)
404 drm_debugfs_cleanup(minor
);
407 drm_sysfs_device_remove(minor
);
409 idr_remove(&drm_minors_idr
, minor
->index
);
417 * Called via drm_exit() at module unload time or when pci device is
420 * Cleans up all DRM device, calling drm_lastclose().
424 void drm_put_dev(struct drm_device
*dev
)
426 struct drm_driver
*driver
;
427 struct drm_map_list
*r_list
, *list_temp
;
432 DRM_ERROR("cleanup called no dev\n");
435 driver
= dev
->driver
;
439 if (drm_core_has_MTRR(dev
) && drm_core_has_AGP(dev
) &&
440 dev
->agp
&& dev
->agp
->agp_mtrr
>= 0) {
442 retval
= mtrr_del(dev
->agp
->agp_mtrr
,
443 dev
->agp
->agp_info
.aper_base
,
444 dev
->agp
->agp_info
.aper_size
* 1024 * 1024);
445 DRM_DEBUG("mtrr_del=%d\n", retval
);
448 if (dev
->driver
->unload
)
449 dev
->driver
->unload(dev
);
451 if (drm_core_has_AGP(dev
) && dev
->agp
) {
456 drm_vblank_cleanup(dev
);
458 list_for_each_entry_safe(r_list
, list_temp
, &dev
->maplist
, head
)
459 drm_rmmap(dev
, r_list
->map
);
460 drm_ht_remove(&dev
->map_hash
);
462 drm_ctxbitmap_cleanup(dev
);
464 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
465 drm_put_minor(&dev
->control
);
467 if (driver
->driver_features
& DRIVER_GEM
)
468 drm_gem_destroy(dev
);
470 drm_put_minor(&dev
->primary
);
478 EXPORT_SYMBOL(drm_put_dev
);
This page took 0.061489 seconds and 5 git commands to generate.