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>
39 unsigned int drm_debug
= 0; /* 1 to enable debug output */
40 EXPORT_SYMBOL(drm_debug
);
42 MODULE_AUTHOR(CORE_AUTHOR
);
43 MODULE_DESCRIPTION(CORE_DESC
);
44 MODULE_LICENSE("GPL and additional rights");
45 MODULE_PARM_DESC(debug
, "Enable debug output");
47 module_param_named(debug
, drm_debug
, int, 0600);
49 struct idr drm_minors_idr
;
51 struct class *drm_class
;
52 struct proc_dir_entry
*drm_proc_root
;
53 struct dentry
*drm_debugfs_root
;
54 void drm_ut_debug_printk(unsigned int request_level
,
56 const char *function_name
,
57 const char *format
, ...)
61 if (drm_debug
& request_level
) {
63 printk(KERN_DEBUG
"[%s:%s], ", prefix
, function_name
);
64 va_start(args
, format
);
65 vprintk(format
, args
);
69 EXPORT_SYMBOL(drm_ut_debug_printk
);
70 static int drm_minor_get_id(struct drm_device
*dev
, int type
)
74 int base
= 0, limit
= 63;
76 if (type
== DRM_MINOR_CONTROL
) {
79 } else if (type
== DRM_MINOR_RENDER
) {
85 if (idr_pre_get(&drm_minors_idr
, GFP_KERNEL
) == 0) {
86 DRM_ERROR("Out of memory expanding drawable idr\n");
89 mutex_lock(&dev
->struct_mutex
);
90 ret
= idr_get_new_above(&drm_minors_idr
, NULL
,
92 mutex_unlock(&dev
->struct_mutex
);
99 if (new_id
>= limit
) {
100 idr_remove(&drm_minors_idr
, new_id
);
106 struct drm_master
*drm_master_create(struct drm_minor
*minor
)
108 struct drm_master
*master
;
110 master
= kzalloc(sizeof(*master
), GFP_KERNEL
);
114 kref_init(&master
->refcount
);
115 spin_lock_init(&master
->lock
.spinlock
);
116 init_waitqueue_head(&master
->lock
.lock_queue
);
117 drm_ht_create(&master
->magiclist
, DRM_MAGIC_HASH_ORDER
);
118 INIT_LIST_HEAD(&master
->magicfree
);
119 master
->minor
= minor
;
121 list_add_tail(&master
->head
, &minor
->master_list
);
126 struct drm_master
*drm_master_get(struct drm_master
*master
)
128 kref_get(&master
->refcount
);
132 static void drm_master_destroy(struct kref
*kref
)
134 struct drm_master
*master
= container_of(kref
, struct drm_master
, refcount
);
135 struct drm_magic_entry
*pt
, *next
;
136 struct drm_device
*dev
= master
->minor
->dev
;
137 struct drm_map_list
*r_list
, *list_temp
;
139 list_del(&master
->head
);
141 if (dev
->driver
->master_destroy
)
142 dev
->driver
->master_destroy(dev
, master
);
144 list_for_each_entry_safe(r_list
, list_temp
, &dev
->maplist
, head
) {
145 if (r_list
->master
== master
) {
146 drm_rmmap_locked(dev
, r_list
->map
);
151 if (master
->unique
) {
152 kfree(master
->unique
);
153 master
->unique
= NULL
;
154 master
->unique_len
= 0;
157 list_for_each_entry_safe(pt
, next
, &master
->magicfree
, head
) {
159 drm_ht_remove_item(&master
->magiclist
, &pt
->hash_item
);
163 drm_ht_remove(&master
->magiclist
);
168 void drm_master_put(struct drm_master
**master
)
170 kref_put(&(*master
)->refcount
, drm_master_destroy
);
174 int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
175 struct drm_file
*file_priv
)
177 if (file_priv
->is_master
)
180 if (file_priv
->minor
->master
&& file_priv
->minor
->master
!= file_priv
->master
)
183 if (!file_priv
->master
)
186 if (!file_priv
->minor
->master
&&
187 file_priv
->minor
->master
!= file_priv
->master
) {
188 mutex_lock(&dev
->struct_mutex
);
189 file_priv
->minor
->master
= drm_master_get(file_priv
->master
);
190 file_priv
->is_master
= 1;
191 mutex_unlock(&dev
->struct_mutex
);
197 int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
198 struct drm_file
*file_priv
)
200 if (!file_priv
->is_master
)
203 if (!file_priv
->minor
->master
)
206 mutex_lock(&dev
->struct_mutex
);
207 drm_master_put(&file_priv
->minor
->master
);
208 file_priv
->is_master
= 0;
209 mutex_unlock(&dev
->struct_mutex
);
213 static int drm_fill_in_dev(struct drm_device
* dev
, struct pci_dev
*pdev
,
214 const struct pci_device_id
*ent
,
215 struct drm_driver
*driver
)
219 INIT_LIST_HEAD(&dev
->filelist
);
220 INIT_LIST_HEAD(&dev
->ctxlist
);
221 INIT_LIST_HEAD(&dev
->vmalist
);
222 INIT_LIST_HEAD(&dev
->maplist
);
223 INIT_LIST_HEAD(&dev
->vblank_event_list
);
225 spin_lock_init(&dev
->count_lock
);
226 spin_lock_init(&dev
->drw_lock
);
227 spin_lock_init(&dev
->event_lock
);
228 init_timer(&dev
->timer
);
229 mutex_init(&dev
->struct_mutex
);
230 mutex_init(&dev
->ctxlist_mutex
);
232 idr_init(&dev
->drw_idr
);
235 dev
->pci_device
= pdev
->device
;
236 dev
->pci_vendor
= pdev
->vendor
;
239 dev
->hose
= pdev
->sysdata
;
242 if (drm_ht_create(&dev
->map_hash
, 12)) {
246 /* the DRM has 6 basic counters */
248 dev
->types
[0] = _DRM_STAT_LOCK
;
249 dev
->types
[1] = _DRM_STAT_OPENS
;
250 dev
->types
[2] = _DRM_STAT_CLOSES
;
251 dev
->types
[3] = _DRM_STAT_IOCTLS
;
252 dev
->types
[4] = _DRM_STAT_LOCKS
;
253 dev
->types
[5] = _DRM_STAT_UNLOCKS
;
255 dev
->driver
= driver
;
257 if (drm_core_has_AGP(dev
)) {
258 if (drm_device_is_agp(dev
))
259 dev
->agp
= drm_agp_init(dev
);
260 if (drm_core_check_feature(dev
, DRIVER_REQUIRE_AGP
)
261 && (dev
->agp
== NULL
)) {
262 DRM_ERROR("Cannot initialize the agpgart module.\n");
264 goto error_out_unreg
;
266 if (drm_core_has_MTRR(dev
)) {
269 mtrr_add(dev
->agp
->agp_info
.aper_base
,
270 dev
->agp
->agp_info
.aper_size
*
271 1024 * 1024, MTRR_TYPE_WRCOMB
, 1);
276 retcode
= drm_ctxbitmap_init(dev
);
278 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
279 goto error_out_unreg
;
282 if (driver
->driver_features
& DRIVER_GEM
) {
283 retcode
= drm_gem_init(dev
);
285 DRM_ERROR("Cannot initialize graphics execution "
287 goto error_out_unreg
;
300 * Get a secondary minor number.
302 * \param dev device data structure
303 * \param sec-minor structure to hold the assigned minor
304 * \return negative number on failure.
306 * Search an empty entry and initialize it to the given parameters, and
307 * create the proc init entry via proc_init(). This routines assigns
308 * minor numbers to secondary heads of multi-headed cards
310 static int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
)
312 struct drm_minor
*new_minor
;
318 minor_id
= drm_minor_get_id(dev
, type
);
322 new_minor
= kzalloc(sizeof(struct drm_minor
), GFP_KERNEL
);
328 new_minor
->type
= type
;
329 new_minor
->device
= MKDEV(DRM_MAJOR
, minor_id
);
330 new_minor
->dev
= dev
;
331 new_minor
->index
= minor_id
;
332 INIT_LIST_HEAD(&new_minor
->master_list
);
334 idr_replace(&drm_minors_idr
, new_minor
, minor_id
);
336 if (type
== DRM_MINOR_LEGACY
) {
337 ret
= drm_proc_init(new_minor
, minor_id
, drm_proc_root
);
339 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
343 new_minor
->proc_root
= NULL
;
345 #if defined(CONFIG_DEBUG_FS)
346 ret
= drm_debugfs_init(new_minor
, minor_id
, drm_debugfs_root
);
348 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
353 ret
= drm_sysfs_device_add(new_minor
);
356 "DRM: Error sysfs_device_add.\n");
361 DRM_DEBUG("new minor assigned %d\n", minor_id
);
366 if (new_minor
->type
== DRM_MINOR_LEGACY
)
367 drm_proc_cleanup(new_minor
, drm_proc_root
);
371 idr_remove(&drm_minors_idr
, minor_id
);
379 * \param pdev - PCI device structure
380 * \param ent entry from the PCI ID table with device type flags
381 * \return zero on success or a negative number on failure.
383 * Attempt to gets inter module "drm" information. If we are first
384 * then register the character device and inter module information.
385 * Try and register, if we fail to register, backout previous work.
387 int drm_get_dev(struct pci_dev
*pdev
, const struct pci_device_id
*ent
,
388 struct drm_driver
*driver
)
390 struct drm_device
*dev
;
395 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
399 ret
= pci_enable_device(pdev
);
403 pci_set_master(pdev
);
404 if ((ret
= drm_fill_in_dev(dev
, pdev
, ent
, driver
))) {
405 printk(KERN_ERR
"DRM: Fill_in_dev failed.\n");
409 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
410 pci_set_drvdata(pdev
, dev
);
411 ret
= drm_get_minor(dev
, &dev
->control
, DRM_MINOR_CONTROL
);
416 if ((ret
= drm_get_minor(dev
, &dev
->primary
, DRM_MINOR_LEGACY
)))
419 if (dev
->driver
->load
) {
420 ret
= dev
->driver
->load(dev
, ent
->driver_data
);
425 /* setup the grouping for the legacy output */
426 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
427 ret
= drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
432 list_add_tail(&dev
->driver_item
, &driver
->device_list
);
434 DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
435 driver
->name
, driver
->major
, driver
->minor
, driver
->patchlevel
,
436 driver
->date
, pci_name(pdev
), dev
->primary
->index
);
441 drm_put_minor(&dev
->primary
);
443 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
444 drm_put_minor(&dev
->control
);
446 pci_disable_device(pdev
);
451 EXPORT_SYMBOL(drm_get_dev
);
454 * Put a secondary minor number.
456 * \param sec_minor - structure to be released
457 * \return always zero
459 * Cleans up the proc resources. Not legal for this to be the
460 * last minor released.
463 int drm_put_minor(struct drm_minor
**minor_p
)
465 struct drm_minor
*minor
= *minor_p
;
467 DRM_DEBUG("release secondary minor %d\n", minor
->index
);
469 if (minor
->type
== DRM_MINOR_LEGACY
)
470 drm_proc_cleanup(minor
, drm_proc_root
);
471 #if defined(CONFIG_DEBUG_FS)
472 drm_debugfs_cleanup(minor
);
475 drm_sysfs_device_remove(minor
);
477 idr_remove(&drm_minors_idr
, minor
->index
);
485 * Called via drm_exit() at module unload time or when pci device is
488 * Cleans up all DRM device, calling drm_lastclose().
492 void drm_put_dev(struct drm_device
*dev
)
494 struct drm_driver
*driver
;
495 struct drm_map_list
*r_list
, *list_temp
;
500 DRM_ERROR("cleanup called no dev\n");
503 driver
= dev
->driver
;
505 drm_vblank_cleanup(dev
);
509 if (drm_core_has_MTRR(dev
) && drm_core_has_AGP(dev
) &&
510 dev
->agp
&& dev
->agp
->agp_mtrr
>= 0) {
512 retval
= mtrr_del(dev
->agp
->agp_mtrr
,
513 dev
->agp
->agp_info
.aper_base
,
514 dev
->agp
->agp_info
.aper_size
* 1024 * 1024);
515 DRM_DEBUG("mtrr_del=%d\n", retval
);
518 if (dev
->driver
->unload
)
519 dev
->driver
->unload(dev
);
521 if (drm_core_has_AGP(dev
) && dev
->agp
) {
526 list_for_each_entry_safe(r_list
, list_temp
, &dev
->maplist
, head
)
527 drm_rmmap(dev
, r_list
->map
);
528 drm_ht_remove(&dev
->map_hash
);
530 drm_ctxbitmap_cleanup(dev
);
532 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
533 drm_put_minor(&dev
->control
);
535 if (driver
->driver_features
& DRIVER_GEM
)
536 drm_gem_destroy(dev
);
538 drm_put_minor(&dev
->primary
);
546 EXPORT_SYMBOL(drm_put_dev
);
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