Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /** |
b5e89ed5 | 2 | * \file drm_drv.c |
1da177e4 LT |
3 | * Generic driver template |
4 | * | |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> | |
6 | * \author Gareth Hughes <gareth@valinux.com> | |
7 | * | |
8 | * To use this template, you must at least define the following (samples | |
9 | * given for the MGA driver): | |
10 | * | |
11 | * \code | |
12 | * #define DRIVER_AUTHOR "VA Linux Systems, Inc." | |
13 | * | |
14 | * #define DRIVER_NAME "mga" | |
15 | * #define DRIVER_DESC "Matrox G200/G400" | |
16 | * #define DRIVER_DATE "20001127" | |
17 | * | |
1da177e4 LT |
18 | * #define drm_x mga_##x |
19 | * \endcode | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com | |
24 | * | |
25 | * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. | |
26 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
27 | * All Rights Reserved. | |
28 | * | |
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: | |
35 | * | |
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 | |
38 | * Software. | |
39 | * | |
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. | |
47 | */ | |
48 | ||
49 | #include "drmP.h" | |
50 | #include "drm_core.h" | |
51 | ||
c94f7029 DA |
52 | static int drm_version(struct inode *inode, struct file *filp, |
53 | unsigned int cmd, unsigned long arg); | |
54 | ||
1da177e4 | 55 | /** Ioctl table */ |
b5e89ed5 | 56 | static drm_ioctl_desc_t drm_ioctls[] = { |
a7a2cc31 DA |
57 | [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0}, |
58 | [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0}, | |
59 | [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0}, | |
60 | [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY}, | |
61 | [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0}, | |
62 | [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0}, | |
63 | [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0}, | |
64 | [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, DRM_MASTER|DRM_ROOT_ONLY}, | |
65 | [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
66 | [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
67 | [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
68 | [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
69 | ||
70 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
71 | [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, DRM_AUTH}, | |
72 | ||
73 | [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
74 | [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, DRM_AUTH}, | |
75 | ||
11bab7d2 DA |
76 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, DRM_AUTH|DRM_ROOT_ONLY}, |
77 | [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, DRM_AUTH|DRM_ROOT_ONLY}, | |
a7a2cc31 DA |
78 | [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
79 | [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, DRM_AUTH}, | |
80 | [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
81 | [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
82 | [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, DRM_AUTH}, | |
83 | ||
84 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
85 | [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
86 | ||
87 | [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, DRM_AUTH}, | |
88 | [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, DRM_AUTH}, | |
89 | ||
90 | [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, DRM_AUTH}, | |
91 | ||
92 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
93 | [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
94 | [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, DRM_AUTH}, | |
95 | [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, DRM_AUTH}, | |
96 | [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, DRM_AUTH}, | |
1da177e4 | 97 | /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ |
a7a2cc31 | 98 | [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {NULL, DRM_AUTH}, |
1da177e4 | 99 | |
a7a2cc31 | 100 | [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
1da177e4 LT |
101 | |
102 | #if __OS_HAS_AGP | |
a7a2cc31 DA |
103 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
104 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
105 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
106 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, DRM_AUTH}, | |
107 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
108 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
109 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
110 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
1da177e4 LT |
111 | #endif |
112 | ||
a7a2cc31 DA |
113 | [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
114 | [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
1da177e4 | 115 | |
a7a2cc31 | 116 | [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0}, |
bea5679f MCA |
117 | |
118 | [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
1da177e4 LT |
119 | }; |
120 | ||
0515b93c | 121 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
122 | |
123 | /** | |
124 | * Take down the DRM device. | |
125 | * | |
126 | * \param dev DRM device structure. | |
127 | * | |
128 | * Frees every resource in \p dev. | |
129 | * | |
aff138ab | 130 | * \sa drm_device |
1da177e4 | 131 | */ |
84b1fd10 | 132 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 133 | { |
8fc2fdf4 | 134 | struct drm_magic_entry *pt, *next; |
55910517 | 135 | struct drm_map_list *r_list, *list_t; |
8fc2fdf4 | 136 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
137 | int i; |
138 | ||
b5e89ed5 | 139 | DRM_DEBUG("\n"); |
1da177e4 | 140 | |
22eae947 DA |
141 | if (dev->driver->lastclose) |
142 | dev->driver->lastclose(dev); | |
143 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 LT |
144 | |
145 | if (dev->unique) { | |
146 | drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); | |
147 | dev->unique = NULL; | |
148 | dev->unique_len = 0; | |
149 | } | |
150 | ||
b5e89ed5 DA |
151 | if (dev->irq_enabled) |
152 | drm_irq_uninstall(dev); | |
1da177e4 | 153 | |
cdec2f82 MCA |
154 | /* Free drawable information memory */ |
155 | for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield); | |
156 | i++) { | |
c60ce623 | 157 | struct drm_drawable_info *info = drm_get_drawable_info(dev, i); |
cdec2f82 MCA |
158 | |
159 | if (info) { | |
160 | drm_free(info->rects, info->num_rects * | |
c60ce623 | 161 | sizeof(struct drm_clip_rect), DRM_MEM_BUFS); |
cdec2f82 MCA |
162 | drm_free(info, sizeof(*info), DRM_MEM_BUFS); |
163 | } | |
164 | } | |
165 | ||
30e2fb18 | 166 | mutex_lock(&dev->struct_mutex); |
b5e89ed5 | 167 | del_timer(&dev->timer); |
1da177e4 | 168 | |
b5e89ed5 | 169 | /* Clear pid list */ |
0a0c721d TH |
170 | if (dev->magicfree.next) { |
171 | list_for_each_entry_safe(pt, next, &dev->magicfree, head) { | |
172 | list_del(&pt->head); | |
173 | drm_ht_remove_item(&dev->magiclist, &pt->hash_item); | |
174 | drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); | |
175 | } | |
1f4eccfd | 176 | drm_ht_remove(&dev->magiclist); |
1da177e4 LT |
177 | } |
178 | ||
b5e89ed5 | 179 | /* Clear AGP information */ |
1da177e4 | 180 | if (drm_core_has_AGP(dev) && dev->agp) { |
55910517 | 181 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 182 | |
b5e89ed5 DA |
183 | /* Remove AGP resources, but leave dev->agp |
184 | intact until drv_cleanup is called. */ | |
bd1b331f | 185 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
186 | if (entry->bound) |
187 | drm_unbind_agp(entry->memory); | |
188 | drm_free_agp(entry->memory, entry->pages); | |
189 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
1da177e4 | 190 | } |
bd1b331f | 191 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 192 | |
7ab98401 | 193 | if (dev->agp->acquired) |
b5e89ed5 | 194 | drm_agp_release(dev); |
1da177e4 LT |
195 | |
196 | dev->agp->acquired = 0; | |
b5e89ed5 | 197 | dev->agp->enabled = 0; |
1da177e4 | 198 | } |
836cf046 DA |
199 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { |
200 | drm_sg_cleanup(dev->sg); | |
201 | dev->sg = NULL; | |
202 | } | |
1da177e4 | 203 | |
b5e89ed5 | 204 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
205 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
206 | list_del(&vma->head); | |
207 | drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); | |
1da177e4 LT |
208 | } |
209 | ||
bd1b331f DA |
210 | list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { |
211 | drm_rmmap_locked(dev, r_list->map); | |
212 | r_list = NULL; | |
b5e89ed5 DA |
213 | } |
214 | ||
215 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { | |
216 | for (i = 0; i < dev->queue_count; i++) { | |
217 | if (dev->queuelist[i]) { | |
218 | drm_free(dev->queuelist[i], | |
219 | sizeof(*dev->queuelist[0]), | |
220 | DRM_MEM_QUEUES); | |
1da177e4 LT |
221 | dev->queuelist[i] = NULL; |
222 | } | |
223 | } | |
b5e89ed5 DA |
224 | drm_free(dev->queuelist, |
225 | dev->queue_slots * sizeof(*dev->queuelist), | |
226 | DRM_MEM_QUEUES); | |
1da177e4 LT |
227 | dev->queuelist = NULL; |
228 | } | |
229 | dev->queue_count = 0; | |
230 | ||
231 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) | |
b5e89ed5 | 232 | drm_dma_takedown(dev); |
1da177e4 | 233 | |
b5e89ed5 DA |
234 | if (dev->lock.hw_lock) { |
235 | dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ | |
1da177e4 | 236 | dev->lock.filp = NULL; |
b5e89ed5 | 237 | wake_up_interruptible(&dev->lock.lock_queue); |
1da177e4 | 238 | } |
30e2fb18 | 239 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 240 | |
22eae947 | 241 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
242 | return 0; |
243 | } | |
244 | ||
1da177e4 LT |
245 | /** |
246 | * Module initialization. Called via init_module at module load time, or via | |
247 | * linux/init/main.c (this is not currently supported). | |
248 | * | |
249 | * \return zero on success or a negative number on failure. | |
250 | * | |
251 | * Initializes an array of drm_device structures, and attempts to | |
252 | * initialize all available devices, using consecutive minors, registering the | |
253 | * stubs and initializing the AGP device. | |
b5e89ed5 | 254 | * |
1da177e4 LT |
255 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
256 | * after the initialization for driver customization. | |
257 | */ | |
b5e89ed5 | 258 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
259 | { |
260 | struct pci_dev *pdev = NULL; | |
261 | struct pci_device_id *pid; | |
262 | int i; | |
263 | ||
b5e89ed5 | 264 | DRM_DEBUG("\n"); |
1da177e4 LT |
265 | |
266 | drm_mem_init(); | |
267 | ||
b5e89ed5 | 268 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
1da177e4 | 269 | pid = (struct pci_device_id *)&driver->pci_driver.id_table[i]; |
b5e89ed5 DA |
270 | |
271 | pdev = NULL; | |
272 | /* pass back in pdev to account for multiple identical cards */ | |
273 | while ((pdev = | |
274 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
275 | pid->subdevice, pdev)) != NULL) { | |
1da177e4 LT |
276 | /* stealth mode requires a manual probe */ |
277 | pci_dev_get(pdev); | |
278 | drm_get_dev(pdev, pid, driver); | |
279 | } | |
280 | } | |
281 | return 0; | |
282 | } | |
b5e89ed5 | 283 | |
1da177e4 LT |
284 | EXPORT_SYMBOL(drm_init); |
285 | ||
286 | /** | |
287 | * Called via cleanup_module() at module unload time. | |
288 | * | |
22eae947 | 289 | * Cleans up all DRM device, calling drm_lastclose(). |
b5e89ed5 | 290 | * |
aff138ab | 291 | * \sa drm_init |
1da177e4 | 292 | */ |
84b1fd10 | 293 | static void drm_cleanup(struct drm_device * dev) |
1da177e4 | 294 | { |
b5e89ed5 | 295 | DRM_DEBUG("\n"); |
1da177e4 LT |
296 | |
297 | if (!dev) { | |
298 | DRM_ERROR("cleanup called no dev\n"); | |
299 | return; | |
300 | } | |
301 | ||
22eae947 | 302 | drm_lastclose(dev); |
1da177e4 | 303 | |
bd1b331f | 304 | drm_ht_remove(&dev->map_hash); |
836cf046 | 305 | |
b5e89ed5 DA |
306 | drm_ctxbitmap_cleanup(dev); |
307 | ||
1da177e4 LT |
308 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && |
309 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
310 | int retval; | |
b5e89ed5 DA |
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); | |
1da177e4 | 315 | } |
b5e89ed5 DA |
316 | |
317 | if (drm_core_has_AGP(dev) && dev->agp) { | |
318 | drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); | |
1da177e4 LT |
319 | dev->agp = NULL; |
320 | } | |
321 | ||
22eae947 DA |
322 | if (dev->driver->unload) |
323 | dev->driver->unload(dev); | |
b5e89ed5 | 324 | |
1da177e4 | 325 | drm_put_head(&dev->primary); |
b5e89ed5 DA |
326 | if (drm_put_dev(dev)) |
327 | DRM_ERROR("Cannot unload module\n"); | |
1da177e4 LT |
328 | } |
329 | ||
b5e89ed5 | 330 | void drm_exit(struct drm_driver *driver) |
1da177e4 LT |
331 | { |
332 | int i; | |
84b1fd10 DA |
333 | struct drm_device *dev = NULL; |
334 | struct drm_head *head; | |
b5e89ed5 DA |
335 | |
336 | DRM_DEBUG("\n"); | |
1da177e4 LT |
337 | |
338 | for (i = 0; i < drm_cards_limit; i++) { | |
339 | head = drm_heads[i]; | |
340 | if (!head) | |
341 | continue; | |
342 | if (!head->dev) | |
343 | continue; | |
b5e89ed5 | 344 | if (head->dev->driver != driver) |
1da177e4 | 345 | continue; |
b5e89ed5 | 346 | dev = head->dev; |
aab8df14 DA |
347 | if (dev) { |
348 | /* release the pci driver */ | |
349 | if (dev->pdev) | |
350 | pci_dev_put(dev->pdev); | |
351 | drm_cleanup(dev); | |
352 | } | |
1da177e4 | 353 | } |
b5e89ed5 | 354 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 355 | } |
b5e89ed5 | 356 | |
1da177e4 LT |
357 | EXPORT_SYMBOL(drm_exit); |
358 | ||
359 | /** File operations structure */ | |
2b8693c0 | 360 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 361 | .owner = THIS_MODULE, |
b5e89ed5 | 362 | .open = drm_stub_open |
1da177e4 LT |
363 | }; |
364 | ||
365 | static int __init drm_core_init(void) | |
366 | { | |
367 | int ret = -ENOMEM; | |
b5e89ed5 DA |
368 | |
369 | drm_cards_limit = | |
370 | (drm_cards_limit < | |
371 | DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1); | |
372 | drm_heads = | |
373 | drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB); | |
374 | if (!drm_heads) | |
1da177e4 | 375 | goto err_p1; |
b5e89ed5 | 376 | |
1da177e4 LT |
377 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
378 | goto err_p1; | |
b5e89ed5 | 379 | |
1da177e4 LT |
380 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
381 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 382 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
383 | ret = PTR_ERR(drm_class); |
384 | goto err_p2; | |
385 | } | |
386 | ||
66600221 | 387 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
388 | if (!drm_proc_root) { |
389 | DRM_ERROR("Cannot create /proc/dri\n"); | |
390 | ret = -1; | |
391 | goto err_p3; | |
392 | } | |
b5e89ed5 DA |
393 | |
394 | DRM_INFO("Initialized %s %d.%d.%d %s\n", | |
395 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 396 | return 0; |
b5e89ed5 | 397 | err_p3: |
1da177e4 | 398 | drm_sysfs_destroy(drm_class); |
b5e89ed5 | 399 | err_p2: |
1da177e4 LT |
400 | unregister_chrdev(DRM_MAJOR, "drm"); |
401 | drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); | |
b5e89ed5 | 402 | err_p1: |
1da177e4 LT |
403 | return ret; |
404 | } | |
405 | ||
b5e89ed5 | 406 | static void __exit drm_core_exit(void) |
1da177e4 LT |
407 | { |
408 | remove_proc_entry("dri", NULL); | |
409 | drm_sysfs_destroy(drm_class); | |
410 | ||
411 | unregister_chrdev(DRM_MAJOR, "drm"); | |
412 | ||
b5e89ed5 | 413 | drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); |
1da177e4 LT |
414 | } |
415 | ||
b5e89ed5 DA |
416 | module_init(drm_core_init); |
417 | module_exit(drm_core_exit); | |
1da177e4 LT |
418 | |
419 | /** | |
420 | * Get version information | |
421 | * | |
422 | * \param inode device inode. | |
423 | * \param filp file pointer. | |
424 | * \param cmd command. | |
425 | * \param arg user argument, pointing to a drm_version structure. | |
426 | * \return zero on success or negative number on failure. | |
427 | * | |
428 | * Fills in the version information in \p arg. | |
429 | */ | |
b5e89ed5 DA |
430 | static int drm_version(struct inode *inode, struct file *filp, |
431 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 432 | { |
84b1fd10 DA |
433 | struct drm_file *priv = filp->private_data; |
434 | struct drm_device *dev = priv->head->dev; | |
c60ce623 DA |
435 | struct drm_version __user *argp = (void __user *)arg; |
436 | struct drm_version version; | |
22eae947 | 437 | int len; |
1da177e4 | 438 | |
b5e89ed5 | 439 | if (copy_from_user(&version, argp, sizeof(version))) |
1da177e4 LT |
440 | return -EFAULT; |
441 | ||
22eae947 DA |
442 | version.version_major = dev->driver->major; |
443 | version.version_minor = dev->driver->minor; | |
444 | version.version_patchlevel = dev->driver->patchlevel; | |
445 | DRM_COPY(version.name, dev->driver->name); | |
446 | DRM_COPY(version.date, dev->driver->date); | |
447 | DRM_COPY(version.desc, dev->driver->desc); | |
b5e89ed5 DA |
448 | |
449 | if (copy_to_user(argp, &version, sizeof(version))) | |
1da177e4 LT |
450 | return -EFAULT; |
451 | return 0; | |
452 | } | |
453 | ||
b5e89ed5 | 454 | /** |
1da177e4 LT |
455 | * Called whenever a process performs an ioctl on /dev/drm. |
456 | * | |
457 | * \param inode device inode. | |
458 | * \param filp file pointer. | |
459 | * \param cmd command. | |
460 | * \param arg user argument. | |
461 | * \return zero on success or negative number on failure. | |
462 | * | |
463 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
464 | * previleges if so required, and dispatches to the respective function. | |
465 | */ | |
b5e89ed5 DA |
466 | int drm_ioctl(struct inode *inode, struct file *filp, |
467 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 468 | { |
84b1fd10 DA |
469 | struct drm_file *priv = filp->private_data; |
470 | struct drm_device *dev = priv->head->dev; | |
1da177e4 LT |
471 | drm_ioctl_desc_t *ioctl; |
472 | drm_ioctl_t *func; | |
473 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
474 | int retcode = -EINVAL; | |
475 | ||
b5e89ed5 DA |
476 | atomic_inc(&dev->ioctl_count); |
477 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
1da177e4 LT |
478 | ++priv->ioctl_count; |
479 | ||
b5e89ed5 DA |
480 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
481 | current->pid, cmd, nr, | |
482 | (long)old_encode_dev(priv->head->device), | |
483 | priv->authenticated); | |
484 | ||
0515b93c | 485 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
486 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
487 | goto err_i1; | |
0515b93c DA |
488 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
489 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) | |
1da177e4 | 490 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
99da6d86 TH |
491 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) |
492 | ioctl = &drm_ioctls[nr]; | |
1da177e4 LT |
493 | else |
494 | goto err_i1; | |
b5e89ed5 | 495 | |
1da177e4 LT |
496 | func = ioctl->func; |
497 | /* is there a local override? */ | |
498 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
499 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
500 | |
501 | if (!func) { | |
502 | DRM_DEBUG("no function\n"); | |
1da177e4 | 503 | retcode = -EINVAL; |
a7a2cc31 DA |
504 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
505 | ((ioctl->flags & DRM_AUTH) && !priv->authenticated) || | |
506 | ((ioctl->flags & DRM_MASTER) && !priv->master)) { | |
1da177e4 LT |
507 | retcode = -EACCES; |
508 | } else { | |
b5e89ed5 | 509 | retcode = func(inode, filp, cmd, arg); |
1da177e4 | 510 | } |
b5e89ed5 DA |
511 | |
512 | err_i1: | |
513 | atomic_dec(&dev->ioctl_count); | |
514 | if (retcode) | |
515 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
516 | return retcode; |
517 | } | |
1da177e4 | 518 | |
b5e89ed5 | 519 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a DA |
520 | |
521 | drm_local_map_t *drm_getsarea(struct drm_device *dev) | |
522 | { | |
55910517 | 523 | struct drm_map_list *entry; |
da509d7a | 524 | |
6f710105 | 525 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
526 | if (entry->map && entry->map->type == _DRM_SHM && |
527 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
528 | return entry->map; | |
529 | } | |
530 | } | |
531 | return NULL; | |
532 | } | |
533 | EXPORT_SYMBOL(drm_getsarea); |