]>
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 | * | |
18 | * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls ) | |
19 | * | |
20 | * #define drm_x mga_##x | |
21 | * \endcode | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com | |
26 | * | |
27 | * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. | |
28 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
29 | * All Rights Reserved. | |
30 | * | |
31 | * Permission is hereby granted, free of charge, to any person obtaining a | |
32 | * copy of this software and associated documentation files (the "Software"), | |
33 | * to deal in the Software without restriction, including without limitation | |
34 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
35 | * and/or sell copies of the Software, and to permit persons to whom the | |
36 | * Software is furnished to do so, subject to the following conditions: | |
37 | * | |
38 | * The above copyright notice and this permission notice (including the next | |
39 | * paragraph) shall be included in all copies or substantial portions of the | |
40 | * Software. | |
41 | * | |
42 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
43 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
44 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
45 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
46 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
47 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
48 | * OTHER DEALINGS IN THE SOFTWARE. | |
49 | */ | |
50 | ||
51 | #include "drmP.h" | |
52 | #include "drm_core.h" | |
53 | ||
c94f7029 DA |
54 | static int drm_version(struct inode *inode, struct file *filp, |
55 | unsigned int cmd, unsigned long arg); | |
56 | ||
1da177e4 | 57 | /** Ioctl table */ |
b5e89ed5 | 58 | static drm_ioctl_desc_t drm_ioctls[] = { |
a7a2cc31 DA |
59 | [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0}, |
60 | [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0}, | |
61 | [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0}, | |
62 | [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY}, | |
63 | [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0}, | |
64 | [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0}, | |
65 | [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0}, | |
66 | [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, DRM_MASTER|DRM_ROOT_ONLY}, | |
67 | [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
68 | [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
69 | [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
70 | [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
71 | ||
72 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
73 | [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, DRM_AUTH}, | |
74 | ||
75 | [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
76 | [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, DRM_AUTH}, | |
77 | ||
11bab7d2 DA |
78 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, DRM_AUTH|DRM_ROOT_ONLY}, |
79 | [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, DRM_AUTH|DRM_ROOT_ONLY}, | |
a7a2cc31 DA |
80 | [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
81 | [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, DRM_AUTH}, | |
82 | [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
83 | [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
84 | [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, DRM_AUTH}, | |
85 | ||
86 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
87 | [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
88 | ||
89 | [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, DRM_AUTH}, | |
90 | [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, DRM_AUTH}, | |
91 | ||
92 | [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, DRM_AUTH}, | |
93 | ||
94 | [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
95 | [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
96 | [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, DRM_AUTH}, | |
97 | [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, DRM_AUTH}, | |
98 | [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, DRM_AUTH}, | |
1da177e4 | 99 | /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ |
a7a2cc31 | 100 | [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {NULL, DRM_AUTH}, |
1da177e4 | 101 | |
a7a2cc31 | 102 | [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
1da177e4 LT |
103 | |
104 | #if __OS_HAS_AGP | |
a7a2cc31 DA |
105 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
106 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
107 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
108 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, DRM_AUTH}, | |
109 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
110 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
111 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
112 | [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
1da177e4 LT |
113 | #endif |
114 | ||
a7a2cc31 DA |
115 | [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, |
116 | [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
1da177e4 | 117 | |
a7a2cc31 | 118 | [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0}, |
bea5679f MD |
119 | |
120 | [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, | |
1da177e4 LT |
121 | }; |
122 | ||
3d77461e | 123 | #define DRIVER_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
124 | |
125 | /** | |
126 | * Take down the DRM device. | |
127 | * | |
128 | * \param dev DRM device structure. | |
129 | * | |
130 | * Frees every resource in \p dev. | |
131 | * | |
aff138ab | 132 | * \sa drm_device |
1da177e4 | 133 | */ |
22eae947 | 134 | int drm_lastclose(drm_device_t * dev) |
1da177e4 LT |
135 | { |
136 | drm_magic_entry_t *pt, *next; | |
1da177e4 | 137 | drm_map_list_t *r_list; |
1da177e4 LT |
138 | drm_vma_entry_t *vma, *vma_next; |
139 | int i; | |
140 | ||
b5e89ed5 | 141 | DRM_DEBUG("\n"); |
1da177e4 | 142 | |
22eae947 DA |
143 | if (dev->driver->lastclose) |
144 | dev->driver->lastclose(dev); | |
145 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 LT |
146 | |
147 | if (dev->unique) { | |
148 | drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); | |
149 | dev->unique = NULL; | |
150 | dev->unique_len = 0; | |
151 | } | |
152 | ||
b5e89ed5 DA |
153 | if (dev->irq_enabled) |
154 | drm_irq_uninstall(dev); | |
1da177e4 | 155 | |
cdec2f82 MD |
156 | /* Free drawable information memory */ |
157 | for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield); | |
158 | i++) { | |
159 | drm_drawable_info_t *info = drm_get_drawable_info(dev, i); | |
160 | ||
161 | if (info) { | |
162 | drm_free(info->rects, info->num_rects * | |
163 | sizeof(drm_clip_rect_t), DRM_MEM_BUFS); | |
164 | drm_free(info, sizeof(*info), DRM_MEM_BUFS); | |
165 | } | |
166 | } | |
167 | ||
30e2fb18 | 168 | mutex_lock(&dev->struct_mutex); |
b5e89ed5 | 169 | del_timer(&dev->timer); |
1da177e4 | 170 | |
b5e89ed5 | 171 | /* Clear pid list */ |
0a0c721d TH |
172 | if (dev->magicfree.next) { |
173 | list_for_each_entry_safe(pt, next, &dev->magicfree, head) { | |
174 | list_del(&pt->head); | |
175 | drm_ht_remove_item(&dev->magiclist, &pt->hash_item); | |
176 | drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); | |
177 | } | |
1f4eccfd | 178 | drm_ht_remove(&dev->magiclist); |
1da177e4 LT |
179 | } |
180 | ||
b5e89ed5 | 181 | /* Clear AGP information */ |
1da177e4 LT |
182 | if (drm_core_has_AGP(dev) && dev->agp) { |
183 | drm_agp_mem_t *entry; | |
184 | drm_agp_mem_t *nexte; | |
185 | ||
b5e89ed5 DA |
186 | /* Remove AGP resources, but leave dev->agp |
187 | intact until drv_cleanup is called. */ | |
188 | for (entry = dev->agp->memory; entry; entry = nexte) { | |
1da177e4 | 189 | nexte = entry->next; |
b5e89ed5 DA |
190 | if (entry->bound) |
191 | drm_unbind_agp(entry->memory); | |
192 | drm_free_agp(entry->memory, entry->pages); | |
193 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
1da177e4 LT |
194 | } |
195 | dev->agp->memory = NULL; | |
196 | ||
7ab98401 | 197 | if (dev->agp->acquired) |
b5e89ed5 | 198 | drm_agp_release(dev); |
1da177e4 LT |
199 | |
200 | dev->agp->acquired = 0; | |
b5e89ed5 | 201 | dev->agp->enabled = 0; |
1da177e4 | 202 | } |
836cf046 DA |
203 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { |
204 | drm_sg_cleanup(dev->sg); | |
205 | dev->sg = NULL; | |
206 | } | |
1da177e4 | 207 | |
b5e89ed5 DA |
208 | /* Clear vma list (only built for debugging) */ |
209 | if (dev->vmalist) { | |
210 | for (vma = dev->vmalist; vma; vma = vma_next) { | |
1da177e4 | 211 | vma_next = vma->next; |
b5e89ed5 | 212 | drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); |
1da177e4 LT |
213 | } |
214 | dev->vmalist = NULL; | |
215 | } | |
216 | ||
b5e89ed5 | 217 | if (dev->maplist) { |
836cf046 DA |
218 | while (!list_empty(&dev->maplist->head)) { |
219 | struct list_head *list = dev->maplist->head.next; | |
220 | r_list = list_entry(list, drm_map_list_t, head); | |
221 | drm_rmmap_locked(dev, r_list->map); | |
222 | } | |
b5e89ed5 DA |
223 | } |
224 | ||
225 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { | |
226 | for (i = 0; i < dev->queue_count; i++) { | |
227 | if (dev->queuelist[i]) { | |
228 | drm_free(dev->queuelist[i], | |
229 | sizeof(*dev->queuelist[0]), | |
230 | DRM_MEM_QUEUES); | |
1da177e4 LT |
231 | dev->queuelist[i] = NULL; |
232 | } | |
233 | } | |
b5e89ed5 DA |
234 | drm_free(dev->queuelist, |
235 | dev->queue_slots * sizeof(*dev->queuelist), | |
236 | DRM_MEM_QUEUES); | |
1da177e4 LT |
237 | dev->queuelist = NULL; |
238 | } | |
239 | dev->queue_count = 0; | |
240 | ||
241 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) | |
b5e89ed5 | 242 | drm_dma_takedown(dev); |
1da177e4 | 243 | |
b5e89ed5 DA |
244 | if (dev->lock.hw_lock) { |
245 | dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ | |
1da177e4 | 246 | dev->lock.filp = NULL; |
b5e89ed5 | 247 | wake_up_interruptible(&dev->lock.lock_queue); |
1da177e4 | 248 | } |
30e2fb18 | 249 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 250 | |
22eae947 | 251 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
252 | return 0; |
253 | } | |
254 | ||
1da177e4 LT |
255 | /** |
256 | * Module initialization. Called via init_module at module load time, or via | |
257 | * linux/init/main.c (this is not currently supported). | |
258 | * | |
259 | * \return zero on success or a negative number on failure. | |
260 | * | |
261 | * Initializes an array of drm_device structures, and attempts to | |
262 | * initialize all available devices, using consecutive minors, registering the | |
263 | * stubs and initializing the AGP device. | |
b5e89ed5 | 264 | * |
1da177e4 LT |
265 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
266 | * after the initialization for driver customization. | |
267 | */ | |
b5e89ed5 | 268 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
269 | { |
270 | struct pci_dev *pdev = NULL; | |
271 | struct pci_device_id *pid; | |
272 | int i; | |
273 | ||
b5e89ed5 | 274 | DRM_DEBUG("\n"); |
1da177e4 LT |
275 | |
276 | drm_mem_init(); | |
277 | ||
b5e89ed5 | 278 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
1da177e4 | 279 | pid = (struct pci_device_id *)&driver->pci_driver.id_table[i]; |
b5e89ed5 DA |
280 | |
281 | pdev = NULL; | |
282 | /* pass back in pdev to account for multiple identical cards */ | |
283 | while ((pdev = | |
284 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
285 | pid->subdevice, pdev)) != NULL) { | |
1da177e4 LT |
286 | /* stealth mode requires a manual probe */ |
287 | pci_dev_get(pdev); | |
288 | drm_get_dev(pdev, pid, driver); | |
289 | } | |
290 | } | |
291 | return 0; | |
292 | } | |
b5e89ed5 | 293 | |
1da177e4 LT |
294 | EXPORT_SYMBOL(drm_init); |
295 | ||
296 | /** | |
297 | * Called via cleanup_module() at module unload time. | |
298 | * | |
22eae947 | 299 | * Cleans up all DRM device, calling drm_lastclose(). |
b5e89ed5 | 300 | * |
aff138ab | 301 | * \sa drm_init |
1da177e4 | 302 | */ |
b5e89ed5 | 303 | static void drm_cleanup(drm_device_t * dev) |
1da177e4 | 304 | { |
b5e89ed5 | 305 | DRM_DEBUG("\n"); |
1da177e4 LT |
306 | |
307 | if (!dev) { | |
308 | DRM_ERROR("cleanup called no dev\n"); | |
309 | return; | |
310 | } | |
311 | ||
22eae947 | 312 | drm_lastclose(dev); |
1da177e4 | 313 | |
836cf046 DA |
314 | if (dev->maplist) { |
315 | drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); | |
316 | dev->maplist = NULL; | |
1f4eccfd | 317 | drm_ht_remove(&dev->map_hash); |
836cf046 DA |
318 | } |
319 | ||
b5e89ed5 DA |
320 | drm_ctxbitmap_cleanup(dev); |
321 | ||
1da177e4 LT |
322 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && |
323 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
324 | int retval; | |
b5e89ed5 DA |
325 | retval = mtrr_del(dev->agp->agp_mtrr, |
326 | dev->agp->agp_info.aper_base, | |
327 | dev->agp->agp_info.aper_size * 1024 * 1024); | |
328 | DRM_DEBUG("mtrr_del=%d\n", retval); | |
1da177e4 | 329 | } |
b5e89ed5 DA |
330 | |
331 | if (drm_core_has_AGP(dev) && dev->agp) { | |
332 | drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); | |
1da177e4 LT |
333 | dev->agp = NULL; |
334 | } | |
335 | ||
22eae947 DA |
336 | if (dev->driver->unload) |
337 | dev->driver->unload(dev); | |
b5e89ed5 | 338 | |
1da177e4 | 339 | drm_put_head(&dev->primary); |
b5e89ed5 DA |
340 | if (drm_put_dev(dev)) |
341 | DRM_ERROR("Cannot unload module\n"); | |
1da177e4 LT |
342 | } |
343 | ||
b5e89ed5 | 344 | void drm_exit(struct drm_driver *driver) |
1da177e4 LT |
345 | { |
346 | int i; | |
347 | drm_device_t *dev = NULL; | |
348 | drm_head_t *head; | |
b5e89ed5 DA |
349 | |
350 | DRM_DEBUG("\n"); | |
1da177e4 LT |
351 | |
352 | for (i = 0; i < drm_cards_limit; i++) { | |
353 | head = drm_heads[i]; | |
354 | if (!head) | |
355 | continue; | |
356 | if (!head->dev) | |
357 | continue; | |
b5e89ed5 | 358 | if (head->dev->driver != driver) |
1da177e4 | 359 | continue; |
b5e89ed5 | 360 | dev = head->dev; |
aab8df14 DA |
361 | if (dev) { |
362 | /* release the pci driver */ | |
363 | if (dev->pdev) | |
364 | pci_dev_put(dev->pdev); | |
365 | drm_cleanup(dev); | |
366 | } | |
1da177e4 | 367 | } |
b5e89ed5 | 368 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 369 | } |
b5e89ed5 | 370 | |
1da177e4 LT |
371 | EXPORT_SYMBOL(drm_exit); |
372 | ||
373 | /** File operations structure */ | |
2b8693c0 | 374 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 375 | .owner = THIS_MODULE, |
b5e89ed5 | 376 | .open = drm_stub_open |
1da177e4 LT |
377 | }; |
378 | ||
379 | static int __init drm_core_init(void) | |
380 | { | |
381 | int ret = -ENOMEM; | |
b5e89ed5 DA |
382 | |
383 | drm_cards_limit = | |
384 | (drm_cards_limit < | |
385 | DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1); | |
386 | drm_heads = | |
387 | drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB); | |
388 | if (!drm_heads) | |
1da177e4 | 389 | goto err_p1; |
b5e89ed5 | 390 | |
1da177e4 LT |
391 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
392 | goto err_p1; | |
b5e89ed5 | 393 | |
1da177e4 LT |
394 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
395 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 396 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
397 | ret = PTR_ERR(drm_class); |
398 | goto err_p2; | |
399 | } | |
400 | ||
66600221 | 401 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
402 | if (!drm_proc_root) { |
403 | DRM_ERROR("Cannot create /proc/dri\n"); | |
404 | ret = -1; | |
405 | goto err_p3; | |
406 | } | |
b5e89ed5 DA |
407 | |
408 | DRM_INFO("Initialized %s %d.%d.%d %s\n", | |
409 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 410 | return 0; |
b5e89ed5 | 411 | err_p3: |
1da177e4 | 412 | drm_sysfs_destroy(drm_class); |
b5e89ed5 | 413 | err_p2: |
1da177e4 LT |
414 | unregister_chrdev(DRM_MAJOR, "drm"); |
415 | drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); | |
b5e89ed5 | 416 | err_p1: |
1da177e4 LT |
417 | return ret; |
418 | } | |
419 | ||
b5e89ed5 | 420 | static void __exit drm_core_exit(void) |
1da177e4 LT |
421 | { |
422 | remove_proc_entry("dri", NULL); | |
423 | drm_sysfs_destroy(drm_class); | |
424 | ||
425 | unregister_chrdev(DRM_MAJOR, "drm"); | |
426 | ||
b5e89ed5 | 427 | drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); |
1da177e4 LT |
428 | } |
429 | ||
b5e89ed5 DA |
430 | module_init(drm_core_init); |
431 | module_exit(drm_core_exit); | |
1da177e4 LT |
432 | |
433 | /** | |
434 | * Get version information | |
435 | * | |
436 | * \param inode device inode. | |
437 | * \param filp file pointer. | |
438 | * \param cmd command. | |
439 | * \param arg user argument, pointing to a drm_version structure. | |
440 | * \return zero on success or negative number on failure. | |
441 | * | |
442 | * Fills in the version information in \p arg. | |
443 | */ | |
b5e89ed5 DA |
444 | static int drm_version(struct inode *inode, struct file *filp, |
445 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
446 | { |
447 | drm_file_t *priv = filp->private_data; | |
448 | drm_device_t *dev = priv->head->dev; | |
449 | drm_version_t __user *argp = (void __user *)arg; | |
450 | drm_version_t version; | |
22eae947 | 451 | int len; |
1da177e4 | 452 | |
b5e89ed5 | 453 | if (copy_from_user(&version, argp, sizeof(version))) |
1da177e4 LT |
454 | return -EFAULT; |
455 | ||
22eae947 DA |
456 | version.version_major = dev->driver->major; |
457 | version.version_minor = dev->driver->minor; | |
458 | version.version_patchlevel = dev->driver->patchlevel; | |
459 | DRM_COPY(version.name, dev->driver->name); | |
460 | DRM_COPY(version.date, dev->driver->date); | |
461 | DRM_COPY(version.desc, dev->driver->desc); | |
b5e89ed5 DA |
462 | |
463 | if (copy_to_user(argp, &version, sizeof(version))) | |
1da177e4 LT |
464 | return -EFAULT; |
465 | return 0; | |
466 | } | |
467 | ||
b5e89ed5 | 468 | /** |
1da177e4 LT |
469 | * Called whenever a process performs an ioctl on /dev/drm. |
470 | * | |
471 | * \param inode device inode. | |
472 | * \param filp file pointer. | |
473 | * \param cmd command. | |
474 | * \param arg user argument. | |
475 | * \return zero on success or negative number on failure. | |
476 | * | |
477 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
478 | * previleges if so required, and dispatches to the respective function. | |
479 | */ | |
b5e89ed5 DA |
480 | int drm_ioctl(struct inode *inode, struct file *filp, |
481 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
482 | { |
483 | drm_file_t *priv = filp->private_data; | |
484 | drm_device_t *dev = priv->head->dev; | |
485 | drm_ioctl_desc_t *ioctl; | |
486 | drm_ioctl_t *func; | |
487 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
488 | int retcode = -EINVAL; | |
489 | ||
b5e89ed5 DA |
490 | atomic_inc(&dev->ioctl_count); |
491 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
1da177e4 LT |
492 | ++priv->ioctl_count; |
493 | ||
b5e89ed5 DA |
494 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
495 | current->pid, cmd, nr, | |
496 | (long)old_encode_dev(priv->head->device), | |
497 | priv->authenticated); | |
498 | ||
99da6d86 TH |
499 | if ((nr >= DRIVER_IOCTL_COUNT) && |
500 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) | |
501 | goto err_i1; | |
502 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) | |
b5e89ed5 | 503 | && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) |
1da177e4 | 504 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
99da6d86 TH |
505 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) |
506 | ioctl = &drm_ioctls[nr]; | |
1da177e4 LT |
507 | else |
508 | goto err_i1; | |
b5e89ed5 | 509 | |
1da177e4 LT |
510 | func = ioctl->func; |
511 | /* is there a local override? */ | |
512 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
513 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
514 | |
515 | if (!func) { | |
516 | DRM_DEBUG("no function\n"); | |
1da177e4 | 517 | retcode = -EINVAL; |
a7a2cc31 DA |
518 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
519 | ((ioctl->flags & DRM_AUTH) && !priv->authenticated) || | |
520 | ((ioctl->flags & DRM_MASTER) && !priv->master)) { | |
1da177e4 LT |
521 | retcode = -EACCES; |
522 | } else { | |
b5e89ed5 | 523 | retcode = func(inode, filp, cmd, arg); |
1da177e4 | 524 | } |
b5e89ed5 DA |
525 | |
526 | err_i1: | |
527 | atomic_dec(&dev->ioctl_count); | |
528 | if (retcode) | |
529 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
530 | return retcode; |
531 | } | |
1da177e4 | 532 | |
b5e89ed5 | 533 | EXPORT_SYMBOL(drm_ioctl); |