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i915: Fix i915 suspend delay
[linux-2.6/cjktty.git] / drivers / gpu / drm / drm_ioc32.c
blobd61d185cf040499232d508d4daa66e2f85113fdf
1 /**
2 * \file drm_ioc32.c
3 *
4 * 32-bit ioctl compatibility routines for the DRM.
5 *
6 * \author Paul Mackerras <paulus@samba.org>
7 *
8 * Copyright (C) Paul Mackerras 2005.
9 * All Rights Reserved.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice (including the next
19 * paragraph) shall be included in all copies or substantial portions of the
20 * Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
28 * IN THE SOFTWARE.
29 */
30 #include <linux/compat.h>
31
32 #include "drmP.h"
33 #include "drm_core.h"
34
35 #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
36 #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
37 #define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
38 #define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
39 #define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
40
41 #define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
42 #define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
43 #define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
44 #define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
45 #define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
46 #define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
47 #define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
48
49 #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
50
51 #define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
52 #define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
53
54 #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
55 #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
56
57 #define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
58 #define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
59 #define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
60 #define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
61 #define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
62 #define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
63
64 #define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
65 #define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
66
67 #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
68
69 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
70
71 typedef struct drm_version_32 {
72 int version_major; /**< Major version */
73 int version_minor; /**< Minor version */
74 int version_patchlevel; /**< Patch level */
75 u32 name_len; /**< Length of name buffer */
76 u32 name; /**< Name of driver */
77 u32 date_len; /**< Length of date buffer */
78 u32 date; /**< User-space buffer to hold date */
79 u32 desc_len; /**< Length of desc buffer */
80 u32 desc; /**< User-space buffer to hold desc */
81 } drm_version32_t;
82
83 static int compat_drm_version(struct file *file, unsigned int cmd,
84 unsigned long arg)
85 {
86 drm_version32_t v32;
87 struct drm_version __user *version;
88 int err;
89
90 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
91 return -EFAULT;
92
93 version = compat_alloc_user_space(sizeof(*version));
94 if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
95 return -EFAULT;
96 if (__put_user(v32.name_len, &version->name_len)
97 || __put_user((void __user *)(unsigned long)v32.name,
98 &version->name)
99 || __put_user(v32.date_len, &version->date_len)
100 || __put_user((void __user *)(unsigned long)v32.date,
101 &version->date)
102 || __put_user(v32.desc_len, &version->desc_len)
103 || __put_user((void __user *)(unsigned long)v32.desc,
104 &version->desc))
105 return -EFAULT;
106
107 err = drm_ioctl(file,
108 DRM_IOCTL_VERSION, (unsigned long)version);
109 if (err)
110 return err;
111
112 if (__get_user(v32.version_major, &version->version_major)
113 || __get_user(v32.version_minor, &version->version_minor)
114 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
115 || __get_user(v32.name_len, &version->name_len)
116 || __get_user(v32.date_len, &version->date_len)
117 || __get_user(v32.desc_len, &version->desc_len))
118 return -EFAULT;
119
120 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
121 return -EFAULT;
122 return 0;
123 }
124
125 typedef struct drm_unique32 {
126 u32 unique_len; /**< Length of unique */
127 u32 unique; /**< Unique name for driver instantiation */
128 } drm_unique32_t;
129
130 static int compat_drm_getunique(struct file *file, unsigned int cmd,
131 unsigned long arg)
132 {
133 drm_unique32_t uq32;
134 struct drm_unique __user *u;
135 int err;
136
137 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
138 return -EFAULT;
139
140 u = compat_alloc_user_space(sizeof(*u));
141 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
142 return -EFAULT;
143 if (__put_user(uq32.unique_len, &u->unique_len)
144 || __put_user((void __user *)(unsigned long)uq32.unique,
145 &u->unique))
146 return -EFAULT;
147
148 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
149 if (err)
150 return err;
151
152 if (__get_user(uq32.unique_len, &u->unique_len))
153 return -EFAULT;
154 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
155 return -EFAULT;
156 return 0;
157 }
158
159 static int compat_drm_setunique(struct file *file, unsigned int cmd,
160 unsigned long arg)
161 {
162 drm_unique32_t uq32;
163 struct drm_unique __user *u;
164
165 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
166 return -EFAULT;
167
168 u = compat_alloc_user_space(sizeof(*u));
169 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
170 return -EFAULT;
171 if (__put_user(uq32.unique_len, &u->unique_len)
172 || __put_user((void __user *)(unsigned long)uq32.unique,
173 &u->unique))
174 return -EFAULT;
175
176 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
177 }
178
179 typedef struct drm_map32 {
180 u32 offset; /**< Requested physical address (0 for SAREA)*/
181 u32 size; /**< Requested physical size (bytes) */
182 enum drm_map_type type; /**< Type of memory to map */
183 enum drm_map_flags flags; /**< Flags */
184 u32 handle; /**< User-space: "Handle" to pass to mmap() */
185 int mtrr; /**< MTRR slot used */
186 } drm_map32_t;
187
188 static int compat_drm_getmap(struct file *file, unsigned int cmd,
189 unsigned long arg)
190 {
191 drm_map32_t __user *argp = (void __user *)arg;
192 drm_map32_t m32;
193 struct drm_map __user *map;
194 int idx, err;
195 void *handle;
196
197 if (get_user(idx, &argp->offset))
198 return -EFAULT;
199
200 map = compat_alloc_user_space(sizeof(*map));
201 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
202 return -EFAULT;
203 if (__put_user(idx, &map->offset))
204 return -EFAULT;
205
206 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map);
207 if (err)
208 return err;
209
210 if (__get_user(m32.offset, &map->offset)
211 || __get_user(m32.size, &map->size)
212 || __get_user(m32.type, &map->type)
213 || __get_user(m32.flags, &map->flags)
214 || __get_user(handle, &map->handle)
215 || __get_user(m32.mtrr, &map->mtrr))
216 return -EFAULT;
217
218 m32.handle = (unsigned long)handle;
219 if (copy_to_user(argp, &m32, sizeof(m32)))
220 return -EFAULT;
221 return 0;
222
223 }
224
225 static int compat_drm_addmap(struct file *file, unsigned int cmd,
226 unsigned long arg)
227 {
228 drm_map32_t __user *argp = (void __user *)arg;
229 drm_map32_t m32;
230 struct drm_map __user *map;
231 int err;
232 void *handle;
233
234 if (copy_from_user(&m32, argp, sizeof(m32)))
235 return -EFAULT;
236
237 map = compat_alloc_user_space(sizeof(*map));
238 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
239 return -EFAULT;
240 if (__put_user(m32.offset, &map->offset)
241 || __put_user(m32.size, &map->size)
242 || __put_user(m32.type, &map->type)
243 || __put_user(m32.flags, &map->flags))
244 return -EFAULT;
245
246 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
247 if (err)
248 return err;
249
250 if (__get_user(m32.offset, &map->offset)
251 || __get_user(m32.mtrr, &map->mtrr)
252 || __get_user(handle, &map->handle))
253 return -EFAULT;
254
255 m32.handle = (unsigned long)handle;
256 if (m32.handle != (unsigned long)handle && printk_ratelimit())
257 printk(KERN_ERR "compat_drm_addmap truncated handle"
258 " %p for type %d offset %x\n",
259 handle, m32.type, m32.offset);
260
261 if (copy_to_user(argp, &m32, sizeof(m32)))
262 return -EFAULT;
263
264 return 0;
265 }
266
267 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
268 unsigned long arg)
269 {
270 drm_map32_t __user *argp = (void __user *)arg;
271 struct drm_map __user *map;
272 u32 handle;
273
274 if (get_user(handle, &argp->handle))
275 return -EFAULT;
276
277 map = compat_alloc_user_space(sizeof(*map));
278 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
279 return -EFAULT;
280 if (__put_user((void *)(unsigned long)handle, &map->handle))
281 return -EFAULT;
282
283 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
284 }
285
286 typedef struct drm_client32 {
287 int idx; /**< Which client desired? */
288 int auth; /**< Is client authenticated? */
289 u32 pid; /**< Process ID */
290 u32 uid; /**< User ID */
291 u32 magic; /**< Magic */
292 u32 iocs; /**< Ioctl count */
293 } drm_client32_t;
294
295 static int compat_drm_getclient(struct file *file, unsigned int cmd,
296 unsigned long arg)
297 {
298 drm_client32_t c32;
299 drm_client32_t __user *argp = (void __user *)arg;
300 struct drm_client __user *client;
301 int idx, err;
302
303 if (get_user(idx, &argp->idx))
304 return -EFAULT;
305
306 client = compat_alloc_user_space(sizeof(*client));
307 if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
308 return -EFAULT;
309 if (__put_user(idx, &client->idx))
310 return -EFAULT;
311
312 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
313 if (err)
314 return err;
315
316 if (__get_user(c32.auth, &client->auth)
317 || __get_user(c32.pid, &client->pid)
318 || __get_user(c32.uid, &client->uid)
319 || __get_user(c32.magic, &client->magic)
320 || __get_user(c32.iocs, &client->iocs))
321 return -EFAULT;
322
323 if (copy_to_user(argp, &c32, sizeof(c32)))
324 return -EFAULT;
325 return 0;
326 }
327
328 typedef struct drm_stats32 {
329 u32 count;
330 struct {
331 u32 value;
332 enum drm_stat_type type;
333 } data[15];
334 } drm_stats32_t;
335
336 static int compat_drm_getstats(struct file *file, unsigned int cmd,
337 unsigned long arg)
338 {
339 drm_stats32_t s32;
340 drm_stats32_t __user *argp = (void __user *)arg;
341 struct drm_stats __user *stats;
342 int i, err;
343
344 stats = compat_alloc_user_space(sizeof(*stats));
345 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
346 return -EFAULT;
347
348 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
349 if (err)
350 return err;
351
352 if (__get_user(s32.count, &stats->count))
353 return -EFAULT;
354 for (i = 0; i < 15; ++i)
355 if (__get_user(s32.data[i].value, &stats->data[i].value)
356 || __get_user(s32.data[i].type, &stats->data[i].type))
357 return -EFAULT;
358
359 if (copy_to_user(argp, &s32, sizeof(s32)))
360 return -EFAULT;
361 return 0;
362 }
363
364 typedef struct drm_buf_desc32 {
365 int count; /**< Number of buffers of this size */
366 int size; /**< Size in bytes */
367 int low_mark; /**< Low water mark */
368 int high_mark; /**< High water mark */
369 int flags;
370 u32 agp_start; /**< Start address in the AGP aperture */
371 } drm_buf_desc32_t;
372
373 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
374 unsigned long arg)
375 {
376 drm_buf_desc32_t __user *argp = (void __user *)arg;
377 struct drm_buf_desc __user *buf;
378 int err;
379 unsigned long agp_start;
380
381 buf = compat_alloc_user_space(sizeof(*buf));
382 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
383 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
384 return -EFAULT;
385
386 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
387 || __get_user(agp_start, &argp->agp_start)
388 || __put_user(agp_start, &buf->agp_start))
389 return -EFAULT;
390
391 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
392 if (err)
393 return err;
394
395 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
396 || __get_user(agp_start, &buf->agp_start)
397 || __put_user(agp_start, &argp->agp_start))
398 return -EFAULT;
399
400 return 0;
401 }
402
403 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
404 unsigned long arg)
405 {
406 drm_buf_desc32_t b32;
407 drm_buf_desc32_t __user *argp = (void __user *)arg;
408 struct drm_buf_desc __user *buf;
409
410 if (copy_from_user(&b32, argp, sizeof(b32)))
411 return -EFAULT;
412
413 buf = compat_alloc_user_space(sizeof(*buf));
414 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
415 return -EFAULT;
416
417 if (__put_user(b32.size, &buf->size)
418 || __put_user(b32.low_mark, &buf->low_mark)
419 || __put_user(b32.high_mark, &buf->high_mark))
420 return -EFAULT;
421
422 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
423 }
424
425 typedef struct drm_buf_info32 {
426 int count; /**< Entries in list */
427 u32 list;
428 } drm_buf_info32_t;
429
430 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
431 unsigned long arg)
432 {
433 drm_buf_info32_t req32;
434 drm_buf_info32_t __user *argp = (void __user *)arg;
435 drm_buf_desc32_t __user *to;
436 struct drm_buf_info __user *request;
437 struct drm_buf_desc __user *list;
438 size_t nbytes;
439 int i, err;
440 int count, actual;
441
442 if (copy_from_user(&req32, argp, sizeof(req32)))
443 return -EFAULT;
444
445 count = req32.count;
446 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
447 if (count < 0)
448 count = 0;
449 if (count > 0
450 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
451 return -EFAULT;
452
453 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
454 request = compat_alloc_user_space(nbytes);
455 if (!access_ok(VERIFY_WRITE, request, nbytes))
456 return -EFAULT;
457 list = (struct drm_buf_desc *) (request + 1);
458
459 if (__put_user(count, &request->count)
460 || __put_user(list, &request->list))
461 return -EFAULT;
462
463 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
464 if (err)
465 return err;
466
467 if (__get_user(actual, &request->count))
468 return -EFAULT;
469 if (count >= actual)
470 for (i = 0; i < actual; ++i)
471 if (__copy_in_user(&to[i], &list[i],
472 offsetof(struct drm_buf_desc, flags)))
473 return -EFAULT;
474
475 if (__put_user(actual, &argp->count))
476 return -EFAULT;
477
478 return 0;
479 }
480
481 typedef struct drm_buf_pub32 {
482 int idx; /**< Index into the master buffer list */
483 int total; /**< Buffer size */
484 int used; /**< Amount of buffer in use (for DMA) */
485 u32 address; /**< Address of buffer */
486 } drm_buf_pub32_t;
487
488 typedef struct drm_buf_map32 {
489 int count; /**< Length of the buffer list */
490 u32 virtual; /**< Mmap'd area in user-virtual */
491 u32 list; /**< Buffer information */
492 } drm_buf_map32_t;
493
494 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
495 unsigned long arg)
496 {
497 drm_buf_map32_t __user *argp = (void __user *)arg;
498 drm_buf_map32_t req32;
499 drm_buf_pub32_t __user *list32;
500 struct drm_buf_map __user *request;
501 struct drm_buf_pub __user *list;
502 int i, err;
503 int count, actual;
504 size_t nbytes;
505 void __user *addr;
506
507 if (copy_from_user(&req32, argp, sizeof(req32)))
508 return -EFAULT;
509 count = req32.count;
510 list32 = (void __user *)(unsigned long)req32.list;
511
512 if (count < 0)
513 return -EINVAL;
514 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
515 request = compat_alloc_user_space(nbytes);
516 if (!access_ok(VERIFY_WRITE, request, nbytes))
517 return -EFAULT;
518 list = (struct drm_buf_pub *) (request + 1);
519
520 if (__put_user(count, &request->count)
521 || __put_user(list, &request->list))
522 return -EFAULT;
523
524 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
525 if (err)
526 return err;
527
528 if (__get_user(actual, &request->count))
529 return -EFAULT;
530 if (count >= actual)
531 for (i = 0; i < actual; ++i)
532 if (__copy_in_user(&list32[i], &list[i],
533 offsetof(struct drm_buf_pub, address))
534 || __get_user(addr, &list[i].address)
535 || __put_user((unsigned long)addr,
536 &list32[i].address))
537 return -EFAULT;
538
539 if (__put_user(actual, &argp->count)
540 || __get_user(addr, &request->virtual)
541 || __put_user((unsigned long)addr, &argp->virtual))
542 return -EFAULT;
543
544 return 0;
545 }
546
547 typedef struct drm_buf_free32 {
548 int count;
549 u32 list;
550 } drm_buf_free32_t;
551
552 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
553 unsigned long arg)
554 {
555 drm_buf_free32_t req32;
556 struct drm_buf_free __user *request;
557 drm_buf_free32_t __user *argp = (void __user *)arg;
558
559 if (copy_from_user(&req32, argp, sizeof(req32)))
560 return -EFAULT;
561
562 request = compat_alloc_user_space(sizeof(*request));
563 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
564 return -EFAULT;
565 if (__put_user(req32.count, &request->count)
566 || __put_user((int __user *)(unsigned long)req32.list,
567 &request->list))
568 return -EFAULT;
569
570 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
571 }
572
573 typedef struct drm_ctx_priv_map32 {
574 unsigned int ctx_id; /**< Context requesting private mapping */
575 u32 handle; /**< Handle of map */
576 } drm_ctx_priv_map32_t;
577
578 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
579 unsigned long arg)
580 {
581 drm_ctx_priv_map32_t req32;
582 struct drm_ctx_priv_map __user *request;
583 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
584
585 if (copy_from_user(&req32, argp, sizeof(req32)))
586 return -EFAULT;
587
588 request = compat_alloc_user_space(sizeof(*request));
589 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
590 return -EFAULT;
591 if (__put_user(req32.ctx_id, &request->ctx_id)
592 || __put_user((void *)(unsigned long)req32.handle,
593 &request->handle))
594 return -EFAULT;
595
596 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
597 }
598
599 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
600 unsigned long arg)
601 {
602 struct drm_ctx_priv_map __user *request;
603 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
604 int err;
605 unsigned int ctx_id;
606 void *handle;
607
608 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
609 || __get_user(ctx_id, &argp->ctx_id))
610 return -EFAULT;
611
612 request = compat_alloc_user_space(sizeof(*request));
613 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
614 return -EFAULT;
615 if (__put_user(ctx_id, &request->ctx_id))
616 return -EFAULT;
617
618 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
619 if (err)
620 return err;
621
622 if (__get_user(handle, &request->handle)
623 || __put_user((unsigned long)handle, &argp->handle))
624 return -EFAULT;
625
626 return 0;
627 }
628
629 typedef struct drm_ctx_res32 {
630 int count;
631 u32 contexts;
632 } drm_ctx_res32_t;
633
634 static int compat_drm_resctx(struct file *file, unsigned int cmd,
635 unsigned long arg)
636 {
637 drm_ctx_res32_t __user *argp = (void __user *)arg;
638 drm_ctx_res32_t res32;
639 struct drm_ctx_res __user *res;
640 int err;
641
642 if (copy_from_user(&res32, argp, sizeof(res32)))
643 return -EFAULT;
644
645 res = compat_alloc_user_space(sizeof(*res));
646 if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
647 return -EFAULT;
648 if (__put_user(res32.count, &res->count)
649 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
650 &res->contexts))
651 return -EFAULT;
652
653 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
654 if (err)
655 return err;
656
657 if (__get_user(res32.count, &res->count)
658 || __put_user(res32.count, &argp->count))
659 return -EFAULT;
660
661 return 0;
662 }
663
664 typedef struct drm_dma32 {
665 int context; /**< Context handle */
666 int send_count; /**< Number of buffers to send */
667 u32 send_indices; /**< List of handles to buffers */
668 u32 send_sizes; /**< Lengths of data to send */
669 enum drm_dma_flags flags; /**< Flags */
670 int request_count; /**< Number of buffers requested */
671 int request_size; /**< Desired size for buffers */
672 u32 request_indices; /**< Buffer information */
673 u32 request_sizes;
674 int granted_count; /**< Number of buffers granted */
675 } drm_dma32_t;
676
677 static int compat_drm_dma(struct file *file, unsigned int cmd,
678 unsigned long arg)
679 {
680 drm_dma32_t d32;
681 drm_dma32_t __user *argp = (void __user *)arg;
682 struct drm_dma __user *d;
683 int err;
684
685 if (copy_from_user(&d32, argp, sizeof(d32)))
686 return -EFAULT;
687
688 d = compat_alloc_user_space(sizeof(*d));
689 if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
690 return -EFAULT;
691
692 if (__put_user(d32.context, &d->context)
693 || __put_user(d32.send_count, &d->send_count)
694 || __put_user((int __user *)(unsigned long)d32.send_indices,
695 &d->send_indices)
696 || __put_user((int __user *)(unsigned long)d32.send_sizes,
697 &d->send_sizes)
698 || __put_user(d32.flags, &d->flags)
699 || __put_user(d32.request_count, &d->request_count)
700 || __put_user((int __user *)(unsigned long)d32.request_indices,
701 &d->request_indices)
702 || __put_user((int __user *)(unsigned long)d32.request_sizes,
703 &d->request_sizes))
704 return -EFAULT;
705
706 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
707 if (err)
708 return err;
709
710 if (__get_user(d32.request_size, &d->request_size)
711 || __get_user(d32.granted_count, &d->granted_count)
712 || __put_user(d32.request_size, &argp->request_size)
713 || __put_user(d32.granted_count, &argp->granted_count))
714 return -EFAULT;
715
716 return 0;
717 }
718
719 #if __OS_HAS_AGP
720 typedef struct drm_agp_mode32 {
721 u32 mode; /**< AGP mode */
722 } drm_agp_mode32_t;
723
724 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
725 unsigned long arg)
726 {
727 drm_agp_mode32_t __user *argp = (void __user *)arg;
728 drm_agp_mode32_t m32;
729 struct drm_agp_mode __user *mode;
730
731 if (get_user(m32.mode, &argp->mode))
732 return -EFAULT;
733
734 mode = compat_alloc_user_space(sizeof(*mode));
735 if (put_user(m32.mode, &mode->mode))
736 return -EFAULT;
737
738 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
739 }
740
741 typedef struct drm_agp_info32 {
742 int agp_version_major;
743 int agp_version_minor;
744 u32 mode;
745 u32 aperture_base; /* physical address */
746 u32 aperture_size; /* bytes */
747 u32 memory_allowed; /* bytes */
748 u32 memory_used;
749
750 /* PCI information */
751 unsigned short id_vendor;
752 unsigned short id_device;
753 } drm_agp_info32_t;
754
755 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
756 unsigned long arg)
757 {
758 drm_agp_info32_t __user *argp = (void __user *)arg;
759 drm_agp_info32_t i32;
760 struct drm_agp_info __user *info;
761 int err;
762
763 info = compat_alloc_user_space(sizeof(*info));
764 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
765 return -EFAULT;
766
767 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
768 if (err)
769 return err;
770
771 if (__get_user(i32.agp_version_major, &info->agp_version_major)
772 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
773 || __get_user(i32.mode, &info->mode)
774 || __get_user(i32.aperture_base, &info->aperture_base)
775 || __get_user(i32.aperture_size, &info->aperture_size)
776 || __get_user(i32.memory_allowed, &info->memory_allowed)
777 || __get_user(i32.memory_used, &info->memory_used)
778 || __get_user(i32.id_vendor, &info->id_vendor)
779 || __get_user(i32.id_device, &info->id_device))
780 return -EFAULT;
781
782 if (copy_to_user(argp, &i32, sizeof(i32)))
783 return -EFAULT;
784
785 return 0;
786 }
787
788 typedef struct drm_agp_buffer32 {
789 u32 size; /**< In bytes -- will round to page boundary */
790 u32 handle; /**< Used for binding / unbinding */
791 u32 type; /**< Type of memory to allocate */
792 u32 physical; /**< Physical used by i810 */
793 } drm_agp_buffer32_t;
794
795 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
796 unsigned long arg)
797 {
798 drm_agp_buffer32_t __user *argp = (void __user *)arg;
799 drm_agp_buffer32_t req32;
800 struct drm_agp_buffer __user *request;
801 int err;
802
803 if (copy_from_user(&req32, argp, sizeof(req32)))
804 return -EFAULT;
805
806 request = compat_alloc_user_space(sizeof(*request));
807 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
808 || __put_user(req32.size, &request->size)
809 || __put_user(req32.type, &request->type))
810 return -EFAULT;
811
812 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
813 if (err)
814 return err;
815
816 if (__get_user(req32.handle, &request->handle)
817 || __get_user(req32.physical, &request->physical)
818 || copy_to_user(argp, &req32, sizeof(req32))) {
819 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
820 return -EFAULT;
821 }
822
823 return 0;
824 }
825
826 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
827 unsigned long arg)
828 {
829 drm_agp_buffer32_t __user *argp = (void __user *)arg;
830 struct drm_agp_buffer __user *request;
831 u32 handle;
832
833 request = compat_alloc_user_space(sizeof(*request));
834 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
835 || get_user(handle, &argp->handle)
836 || __put_user(handle, &request->handle))
837 return -EFAULT;
838
839 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
840 }
841
842 typedef struct drm_agp_binding32 {
843 u32 handle; /**< From drm_agp_buffer */
844 u32 offset; /**< In bytes -- will round to page boundary */
845 } drm_agp_binding32_t;
846
847 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
848 unsigned long arg)
849 {
850 drm_agp_binding32_t __user *argp = (void __user *)arg;
851 drm_agp_binding32_t req32;
852 struct drm_agp_binding __user *request;
853
854 if (copy_from_user(&req32, argp, sizeof(req32)))
855 return -EFAULT;
856
857 request = compat_alloc_user_space(sizeof(*request));
858 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
859 || __put_user(req32.handle, &request->handle)
860 || __put_user(req32.offset, &request->offset))
861 return -EFAULT;
862
863 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
864 }
865
866 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
867 unsigned long arg)
868 {
869 drm_agp_binding32_t __user *argp = (void __user *)arg;
870 struct drm_agp_binding __user *request;
871 u32 handle;
872
873 request = compat_alloc_user_space(sizeof(*request));
874 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
875 || get_user(handle, &argp->handle)
876 || __put_user(handle, &request->handle))
877 return -EFAULT;
878
879 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
880 }
881 #endif /* __OS_HAS_AGP */
882
883 typedef struct drm_scatter_gather32 {
884 u32 size; /**< In bytes -- will round to page boundary */
885 u32 handle; /**< Used for mapping / unmapping */
886 } drm_scatter_gather32_t;
887
888 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
889 unsigned long arg)
890 {
891 drm_scatter_gather32_t __user *argp = (void __user *)arg;
892 struct drm_scatter_gather __user *request;
893 int err;
894 unsigned long x;
895
896 request = compat_alloc_user_space(sizeof(*request));
897 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
898 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
899 || __get_user(x, &argp->size)
900 || __put_user(x, &request->size))
901 return -EFAULT;
902
903 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
904 if (err)
905 return err;
906
907 /* XXX not sure about the handle conversion here... */
908 if (__get_user(x, &request->handle)
909 || __put_user(x >> PAGE_SHIFT, &argp->handle))
910 return -EFAULT;
911
912 return 0;
913 }
914
915 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
916 unsigned long arg)
917 {
918 drm_scatter_gather32_t __user *argp = (void __user *)arg;
919 struct drm_scatter_gather __user *request;
920 unsigned long x;
921
922 request = compat_alloc_user_space(sizeof(*request));
923 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
924 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
925 || __get_user(x, &argp->handle)
926 || __put_user(x << PAGE_SHIFT, &request->handle))
927 return -EFAULT;
928
929 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
930 }
931
932 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
933 typedef struct drm_update_draw32 {
934 drm_drawable_t handle;
935 unsigned int type;
936 unsigned int num;
937 /* 64-bit version has a 32-bit pad here */
938 u64 data; /**< Pointer */
939 } __attribute__((packed)) drm_update_draw32_t;
940
941 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
942 unsigned long arg)
943 {
944 drm_update_draw32_t update32;
945 struct drm_update_draw __user *request;
946 int err;
947
948 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
949 return -EFAULT;
950
951 request = compat_alloc_user_space(sizeof(*request));
952 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) ||
953 __put_user(update32.handle, &request->handle) ||
954 __put_user(update32.type, &request->type) ||
955 __put_user(update32.num, &request->num) ||
956 __put_user(update32.data, &request->data))
957 return -EFAULT;
958
959 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
960 return err;
961 }
962 #endif
963
964 struct drm_wait_vblank_request32 {
965 enum drm_vblank_seq_type type;
966 unsigned int sequence;
967 u32 signal;
968 };
969
970 struct drm_wait_vblank_reply32 {
971 enum drm_vblank_seq_type type;
972 unsigned int sequence;
973 s32 tval_sec;
974 s32 tval_usec;
975 };
976
977 typedef union drm_wait_vblank32 {
978 struct drm_wait_vblank_request32 request;
979 struct drm_wait_vblank_reply32 reply;
980 } drm_wait_vblank32_t;
981
982 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
983 unsigned long arg)
984 {
985 drm_wait_vblank32_t __user *argp = (void __user *)arg;
986 drm_wait_vblank32_t req32;
987 union drm_wait_vblank __user *request;
988 int err;
989
990 if (copy_from_user(&req32, argp, sizeof(req32)))
991 return -EFAULT;
992
993 request = compat_alloc_user_space(sizeof(*request));
994 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
995 || __put_user(req32.request.type, &request->request.type)
996 || __put_user(req32.request.sequence, &request->request.sequence)
997 || __put_user(req32.request.signal, &request->request.signal))
998 return -EFAULT;
999
1000 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
1001 if (err)
1002 return err;
1003
1004 if (__get_user(req32.reply.type, &request->reply.type)
1005 || __get_user(req32.reply.sequence, &request->reply.sequence)
1006 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1007 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1008 return -EFAULT;
1009
1010 if (copy_to_user(argp, &req32, sizeof(req32)))
1011 return -EFAULT;
1012
1013 return 0;
1014 }
1015
1016 drm_ioctl_compat_t *drm_compat_ioctls[] = {
1017 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1018 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1019 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1020 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1021 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1022 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1023 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1024 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1025 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1026 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1027 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1028 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1029 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1030 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1031 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1032 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1033 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1034 #if __OS_HAS_AGP
1035 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1036 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1037 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1038 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1039 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1040 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1041 #endif
1042 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1043 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1044 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
1045 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
1046 #endif
1047 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1048 };
1049
1050 /**
1051 * Called whenever a 32-bit process running under a 64-bit kernel
1052 * performs an ioctl on /dev/drm.
1053 *
1054 * \param file_priv DRM file private.
1055 * \param cmd command.
1056 * \param arg user argument.
1057 * \return zero on success or negative number on failure.
1058 */
1059 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1060 {
1061 unsigned int nr = DRM_IOCTL_NR(cmd);
1062 drm_ioctl_compat_t *fn;
1063 int ret;
1064
1065 /* Assume that ioctls without an explicit compat routine will just
1066 * work. This may not always be a good assumption, but it's better
1067 * than always failing.
1068 */
1069 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
1070 return drm_ioctl(filp, cmd, arg);
1071
1072 fn = drm_compat_ioctls[nr];
1073
1074 if (fn != NULL)
1075 ret = (*fn) (filp, cmd, arg);
1076 else
1077 ret = drm_ioctl(filp, cmd, arg);
1078
1079 return ret;
1080 }
1081
1082 EXPORT_SYMBOL(drm_compat_ioctl);
CJK support for tty framebuffer vt