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
;
54 static int drm_minor_get_id(struct drm_device
*dev
, int type
)
58 int base
= 0, limit
= 63;
60 if (type
== DRM_MINOR_CONTROL
) {
63 } else if (type
== DRM_MINOR_RENDER
) {
69 if (idr_pre_get(&drm_minors_idr
, GFP_KERNEL
) == 0) {
70 DRM_ERROR("Out of memory expanding drawable idr\n");
73 mutex_lock(&dev
->struct_mutex
);
74 ret
= idr_get_new_above(&drm_minors_idr
, NULL
,
76 mutex_unlock(&dev
->struct_mutex
);
83 if (new_id
>= limit
) {
84 idr_remove(&drm_minors_idr
, new_id
);
90 struct drm_master
*drm_master_create(struct drm_minor
*minor
)
92 struct drm_master
*master
;
94 master
= drm_calloc(1, sizeof(*master
), DRM_MEM_DRIVER
);
98 kref_init(&master
->refcount
);
99 spin_lock_init(&master
->lock
.spinlock
);
100 init_waitqueue_head(&master
->lock
.lock_queue
);
101 drm_ht_create(&master
->magiclist
, DRM_MAGIC_HASH_ORDER
);
102 INIT_LIST_HEAD(&master
->magicfree
);
103 master
->minor
= minor
;
105 list_add_tail(&master
->head
, &minor
->master_list
);
110 struct drm_master
*drm_master_get(struct drm_master
*master
)
112 kref_get(&master
->refcount
);
116 static void drm_master_destroy(struct kref
*kref
)
118 struct drm_master
*master
= container_of(kref
, struct drm_master
, refcount
);
119 struct drm_magic_entry
*pt
, *next
;
120 struct drm_device
*dev
= master
->minor
->dev
;
121 struct drm_map_list
*r_list
, *list_temp
;
123 list_del(&master
->head
);
125 if (dev
->driver
->master_destroy
)
126 dev
->driver
->master_destroy(dev
, master
);
128 list_for_each_entry_safe(r_list
, list_temp
, &dev
->maplist
, head
) {
129 if (r_list
->master
== master
) {
130 drm_rmmap_locked(dev
, r_list
->map
);
135 if (master
->unique
) {
136 drm_free(master
->unique
, master
->unique_size
, DRM_MEM_DRIVER
);
137 master
->unique
= NULL
;
138 master
->unique_len
= 0;
141 list_for_each_entry_safe(pt
, next
, &master
->magicfree
, head
) {
143 drm_ht_remove_item(&master
->magiclist
, &pt
->hash_item
);
144 drm_free(pt
, sizeof(*pt
), DRM_MEM_MAGIC
);
147 drm_ht_remove(&master
->magiclist
);
149 drm_free(master
, sizeof(*master
), DRM_MEM_DRIVER
);
152 void drm_master_put(struct drm_master
**master
)
154 kref_put(&(*master
)->refcount
, drm_master_destroy
);
158 int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
159 struct drm_file
*file_priv
)
161 if (file_priv
->minor
->master
&& file_priv
->minor
->master
!= file_priv
->master
)
164 if (!file_priv
->master
)
167 if (!file_priv
->minor
->master
&&
168 file_priv
->minor
->master
!= file_priv
->master
) {
169 mutex_lock(&dev
->struct_mutex
);
170 file_priv
->minor
->master
= drm_master_get(file_priv
->master
);
171 mutex_unlock(&dev
->struct_mutex
);
177 int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
178 struct drm_file
*file_priv
)
180 if (!file_priv
->master
)
182 mutex_lock(&dev
->struct_mutex
);
183 drm_master_put(&file_priv
->minor
->master
);
184 mutex_unlock(&dev
->struct_mutex
);
188 static int drm_fill_in_dev(struct drm_device
* dev
, struct pci_dev
*pdev
,
189 const struct pci_device_id
*ent
,
190 struct drm_driver
*driver
)
194 INIT_LIST_HEAD(&dev
->filelist
);
195 INIT_LIST_HEAD(&dev
->ctxlist
);
196 INIT_LIST_HEAD(&dev
->vmalist
);
197 INIT_LIST_HEAD(&dev
->maplist
);
199 spin_lock_init(&dev
->count_lock
);
200 spin_lock_init(&dev
->drw_lock
);
201 init_timer(&dev
->timer
);
202 mutex_init(&dev
->struct_mutex
);
203 mutex_init(&dev
->ctxlist_mutex
);
205 idr_init(&dev
->drw_idr
);
208 dev
->pci_device
= pdev
->device
;
209 dev
->pci_vendor
= pdev
->vendor
;
212 dev
->hose
= pdev
->sysdata
;
215 if (drm_ht_create(&dev
->map_hash
, 12)) {
219 /* the DRM has 6 basic counters */
221 dev
->types
[0] = _DRM_STAT_LOCK
;
222 dev
->types
[1] = _DRM_STAT_OPENS
;
223 dev
->types
[2] = _DRM_STAT_CLOSES
;
224 dev
->types
[3] = _DRM_STAT_IOCTLS
;
225 dev
->types
[4] = _DRM_STAT_LOCKS
;
226 dev
->types
[5] = _DRM_STAT_UNLOCKS
;
228 dev
->driver
= driver
;
230 if (drm_core_has_AGP(dev
)) {
231 if (drm_device_is_agp(dev
))
232 dev
->agp
= drm_agp_init(dev
);
233 if (drm_core_check_feature(dev
, DRIVER_REQUIRE_AGP
)
234 && (dev
->agp
== NULL
)) {
235 DRM_ERROR("Cannot initialize the agpgart module.\n");
237 goto error_out_unreg
;
239 if (drm_core_has_MTRR(dev
)) {
242 mtrr_add(dev
->agp
->agp_info
.aper_base
,
243 dev
->agp
->agp_info
.aper_size
*
244 1024 * 1024, MTRR_TYPE_WRCOMB
, 1);
249 retcode
= drm_ctxbitmap_init(dev
);
251 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
252 goto error_out_unreg
;
255 if (driver
->driver_features
& DRIVER_GEM
) {
256 retcode
= drm_gem_init(dev
);
258 DRM_ERROR("Cannot initialize graphics execution "
260 goto error_out_unreg
;
273 * Get a secondary minor number.
275 * \param dev device data structure
276 * \param sec-minor structure to hold the assigned minor
277 * \return negative number on failure.
279 * Search an empty entry and initialize it to the given parameters, and
280 * create the proc init entry via proc_init(). This routines assigns
281 * minor numbers to secondary heads of multi-headed cards
283 static int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
)
285 struct drm_minor
*new_minor
;
291 minor_id
= drm_minor_get_id(dev
, type
);
295 new_minor
= kzalloc(sizeof(struct drm_minor
), GFP_KERNEL
);
301 new_minor
->type
= type
;
302 new_minor
->device
= MKDEV(DRM_MAJOR
, minor_id
);
303 new_minor
->dev
= dev
;
304 new_minor
->index
= minor_id
;
305 INIT_LIST_HEAD(&new_minor
->master_list
);
307 idr_replace(&drm_minors_idr
, new_minor
, minor_id
);
309 if (type
== DRM_MINOR_LEGACY
) {
310 ret
= drm_proc_init(new_minor
, minor_id
, drm_proc_root
);
312 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
316 new_minor
->dev_root
= NULL
;
318 ret
= drm_sysfs_device_add(new_minor
);
321 "DRM: Error sysfs_device_add.\n");
326 DRM_DEBUG("new minor assigned %d\n", minor_id
);
331 if (new_minor
->type
== DRM_MINOR_LEGACY
)
332 drm_proc_cleanup(new_minor
, drm_proc_root
);
336 idr_remove(&drm_minors_idr
, minor_id
);
344 * \param pdev - PCI device structure
345 * \param ent entry from the PCI ID table with device type flags
346 * \return zero on success or a negative number on failure.
348 * Attempt to gets inter module "drm" information. If we are first
349 * then register the character device and inter module information.
350 * Try and register, if we fail to register, backout previous work.
352 int drm_get_dev(struct pci_dev
*pdev
, const struct pci_device_id
*ent
,
353 struct drm_driver
*driver
)
355 struct drm_device
*dev
;
360 dev
= drm_calloc(1, sizeof(*dev
), DRM_MEM_STUB
);
364 ret
= pci_enable_device(pdev
);
368 pci_set_master(pdev
);
369 if ((ret
= drm_fill_in_dev(dev
, pdev
, ent
, driver
))) {
370 printk(KERN_ERR
"DRM: Fill_in_dev failed.\n");
374 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
375 pci_set_drvdata(pdev
, dev
);
376 ret
= drm_get_minor(dev
, &dev
->control
, DRM_MINOR_CONTROL
);
381 if ((ret
= drm_get_minor(dev
, &dev
->primary
, DRM_MINOR_LEGACY
)))
384 if (dev
->driver
->load
) {
385 ret
= dev
->driver
->load(dev
, ent
->driver_data
);
390 /* setup the grouping for the legacy output */
391 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
392 ret
= drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
397 list_add_tail(&dev
->driver_item
, &driver
->device_list
);
399 DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
400 driver
->name
, driver
->major
, driver
->minor
, driver
->patchlevel
,
401 driver
->date
, pci_name(pdev
), dev
->primary
->index
);
406 drm_put_minor(&dev
->primary
);
408 pci_disable_device(pdev
);
410 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
413 EXPORT_SYMBOL(drm_get_dev
);
416 * Put a secondary minor number.
418 * \param sec_minor - structure to be released
419 * \return always zero
421 * Cleans up the proc resources. Not legal for this to be the
422 * last minor released.
425 int drm_put_minor(struct drm_minor
**minor_p
)
427 struct drm_minor
*minor
= *minor_p
;
429 DRM_DEBUG("release secondary minor %d\n", minor
->index
);
431 if (minor
->type
== DRM_MINOR_LEGACY
)
432 drm_proc_cleanup(minor
, drm_proc_root
);
433 drm_sysfs_device_remove(minor
);
435 idr_remove(&drm_minors_idr
, minor
->index
);
443 * Called via drm_exit() at module unload time or when pci device is
446 * Cleans up all DRM device, calling drm_lastclose().
450 void drm_put_dev(struct drm_device
*dev
)
452 struct drm_driver
*driver
= dev
->driver
;
453 struct drm_map_list
*r_list
, *list_temp
;
458 DRM_ERROR("cleanup called no dev\n");
462 drm_vblank_cleanup(dev
);
466 if (drm_core_has_MTRR(dev
) && drm_core_has_AGP(dev
) &&
467 dev
->agp
&& dev
->agp
->agp_mtrr
>= 0) {
469 retval
= mtrr_del(dev
->agp
->agp_mtrr
,
470 dev
->agp
->agp_info
.aper_base
,
471 dev
->agp
->agp_info
.aper_size
* 1024 * 1024);
472 DRM_DEBUG("mtrr_del=%d\n", retval
);
475 if (dev
->driver
->unload
)
476 dev
->driver
->unload(dev
);
478 if (drm_core_has_AGP(dev
) && dev
->agp
) {
479 drm_free(dev
->agp
, sizeof(*dev
->agp
), DRM_MEM_AGPLISTS
);
483 drm_ht_remove(&dev
->map_hash
);
484 drm_ctxbitmap_cleanup(dev
);
486 list_for_each_entry_safe(r_list
, list_temp
, &dev
->maplist
, head
)
487 drm_rmmap(dev
, r_list
->map
);
489 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
490 drm_put_minor(&dev
->control
);
492 if (driver
->driver_features
& DRIVER_GEM
)
493 drm_gem_destroy(dev
);
495 drm_put_minor(&dev
->primary
);
498 drm_free(dev
->devname
, strlen(dev
->devname
) + 1,
502 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
504 EXPORT_SYMBOL(drm_put_dev
);
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