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 if (master
->lock
.hw_lock
) {
150 if (dev
->sigdata
.lock
== master
->lock
.hw_lock
)
151 dev
->sigdata
.lock
= NULL
;
152 master
->lock
.hw_lock
= NULL
;
153 master
->lock
.file_priv
= NULL
;
154 wake_up_interruptible(&master
->lock
.lock_queue
);
157 drm_free(master
, sizeof(*master
), DRM_MEM_DRIVER
);
160 void drm_master_put(struct drm_master
**master
)
162 kref_put(&(*master
)->refcount
, drm_master_destroy
);
166 int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
167 struct drm_file
*file_priv
)
169 if (file_priv
->minor
->master
&& file_priv
->minor
->master
!= file_priv
->master
)
172 if (!file_priv
->master
)
175 if (!file_priv
->minor
->master
&&
176 file_priv
->minor
->master
!= file_priv
->master
) {
177 mutex_lock(&dev
->struct_mutex
);
178 file_priv
->minor
->master
= drm_master_get(file_priv
->master
);
179 mutex_lock(&dev
->struct_mutex
);
185 int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
186 struct drm_file
*file_priv
)
188 if (!file_priv
->master
)
190 mutex_lock(&dev
->struct_mutex
);
191 drm_master_put(&file_priv
->minor
->master
);
192 mutex_unlock(&dev
->struct_mutex
);
196 static int drm_fill_in_dev(struct drm_device
* dev
, struct pci_dev
*pdev
,
197 const struct pci_device_id
*ent
,
198 struct drm_driver
*driver
)
202 INIT_LIST_HEAD(&dev
->filelist
);
203 INIT_LIST_HEAD(&dev
->ctxlist
);
204 INIT_LIST_HEAD(&dev
->vmalist
);
205 INIT_LIST_HEAD(&dev
->maplist
);
207 spin_lock_init(&dev
->count_lock
);
208 spin_lock_init(&dev
->drw_lock
);
209 init_timer(&dev
->timer
);
210 mutex_init(&dev
->struct_mutex
);
211 mutex_init(&dev
->ctxlist_mutex
);
213 idr_init(&dev
->drw_idr
);
216 dev
->pci_device
= pdev
->device
;
217 dev
->pci_vendor
= pdev
->vendor
;
220 dev
->hose
= pdev
->sysdata
;
223 if (drm_ht_create(&dev
->map_hash
, 12)) {
227 /* the DRM has 6 basic counters */
229 dev
->types
[0] = _DRM_STAT_LOCK
;
230 dev
->types
[1] = _DRM_STAT_OPENS
;
231 dev
->types
[2] = _DRM_STAT_CLOSES
;
232 dev
->types
[3] = _DRM_STAT_IOCTLS
;
233 dev
->types
[4] = _DRM_STAT_LOCKS
;
234 dev
->types
[5] = _DRM_STAT_UNLOCKS
;
236 dev
->driver
= driver
;
238 if (drm_core_has_AGP(dev
)) {
239 if (drm_device_is_agp(dev
))
240 dev
->agp
= drm_agp_init(dev
);
241 if (drm_core_check_feature(dev
, DRIVER_REQUIRE_AGP
)
242 && (dev
->agp
== NULL
)) {
243 DRM_ERROR("Cannot initialize the agpgart module.\n");
245 goto error_out_unreg
;
247 if (drm_core_has_MTRR(dev
)) {
250 mtrr_add(dev
->agp
->agp_info
.aper_base
,
251 dev
->agp
->agp_info
.aper_size
*
252 1024 * 1024, MTRR_TYPE_WRCOMB
, 1);
257 retcode
= drm_ctxbitmap_init(dev
);
259 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
260 goto error_out_unreg
;
263 if (driver
->driver_features
& DRIVER_GEM
) {
264 retcode
= drm_gem_init(dev
);
266 DRM_ERROR("Cannot initialize graphics execution "
268 goto error_out_unreg
;
281 * Get a secondary minor number.
283 * \param dev device data structure
284 * \param sec-minor structure to hold the assigned minor
285 * \return negative number on failure.
287 * Search an empty entry and initialize it to the given parameters, and
288 * create the proc init entry via proc_init(). This routines assigns
289 * minor numbers to secondary heads of multi-headed cards
291 static int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
)
293 struct drm_minor
*new_minor
;
299 minor_id
= drm_minor_get_id(dev
, type
);
303 new_minor
= kzalloc(sizeof(struct drm_minor
), GFP_KERNEL
);
309 new_minor
->type
= type
;
310 new_minor
->device
= MKDEV(DRM_MAJOR
, minor_id
);
311 new_minor
->dev
= dev
;
312 new_minor
->index
= minor_id
;
313 INIT_LIST_HEAD(&new_minor
->master_list
);
315 idr_replace(&drm_minors_idr
, new_minor
, minor_id
);
317 if (type
== DRM_MINOR_LEGACY
) {
318 ret
= drm_proc_init(new_minor
, minor_id
, drm_proc_root
);
320 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
324 new_minor
->dev_root
= NULL
;
326 ret
= drm_sysfs_device_add(new_minor
);
329 "DRM: Error sysfs_device_add.\n");
334 DRM_DEBUG("new minor assigned %d\n", minor_id
);
339 if (new_minor
->type
== DRM_MINOR_LEGACY
)
340 drm_proc_cleanup(new_minor
, drm_proc_root
);
344 idr_remove(&drm_minors_idr
, minor_id
);
352 * \param pdev - PCI device structure
353 * \param ent entry from the PCI ID table with device type flags
354 * \return zero on success or a negative number on failure.
356 * Attempt to gets inter module "drm" information. If we are first
357 * then register the character device and inter module information.
358 * Try and register, if we fail to register, backout previous work.
360 int drm_get_dev(struct pci_dev
*pdev
, const struct pci_device_id
*ent
,
361 struct drm_driver
*driver
)
363 struct drm_device
*dev
;
368 dev
= drm_calloc(1, sizeof(*dev
), DRM_MEM_STUB
);
372 ret
= pci_enable_device(pdev
);
376 pci_set_master(pdev
);
377 if ((ret
= drm_fill_in_dev(dev
, pdev
, ent
, driver
))) {
378 printk(KERN_ERR
"DRM: Fill_in_dev failed.\n");
382 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
383 ret
= drm_get_minor(dev
, &dev
->control
, DRM_MINOR_CONTROL
);
388 if ((ret
= drm_get_minor(dev
, &dev
->primary
, DRM_MINOR_LEGACY
)))
391 if (dev
->driver
->load
) {
392 ret
= dev
->driver
->load(dev
, ent
->driver_data
);
397 /* setup the grouping for the legacy output */
398 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
399 ret
= drm_mode_group_init_legacy_group(dev
, &dev
->primary
->mode_group
);
404 list_add_tail(&dev
->driver_item
, &driver
->device_list
);
406 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
407 driver
->name
, driver
->major
, driver
->minor
, driver
->patchlevel
,
408 driver
->date
, dev
->primary
->index
);
413 drm_put_minor(&dev
->primary
);
415 pci_disable_device(pdev
);
417 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
422 * Put a device minor number.
424 * \param dev device data structure
425 * \return always zero
427 * Cleans up the proc resources. If it is the last minor then release the foreign
428 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
429 * unregisters the character device.
431 int drm_put_dev(struct drm_device
* dev
)
433 DRM_DEBUG("release primary %s\n", dev
->driver
->pci_driver
.name
);
436 drm_free(dev
->devname
, strlen(dev
->devname
) + 1,
440 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
445 * Put a secondary minor number.
447 * \param sec_minor - structure to be released
448 * \return always zero
450 * Cleans up the proc resources. Not legal for this to be the
451 * last minor released.
454 int drm_put_minor(struct drm_minor
**minor_p
)
456 struct drm_minor
*minor
= *minor_p
;
458 DRM_DEBUG("release secondary minor %d\n", minor
->index
);
460 if (minor
->type
== DRM_MINOR_LEGACY
)
461 drm_proc_cleanup(minor
, drm_proc_root
);
462 drm_sysfs_device_remove(minor
);
464 idr_remove(&drm_minors_idr
, minor
->index
);