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[CONNECTOR]: Update documentation to match reality.
[linux-2.6/verdex.git] / drivers / char / drm / drm_ioc32.c
blob8087a963639922e3e15a625332a2330c38a99f82
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 #include <linux/ioctl32.h>
32
33 #include "drmP.h"
34 #include "drm_core.h"
35
36 #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
37 #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
38 #define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
39 #define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
40 #define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
41
42 #define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
43 #define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
44 #define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
45 #define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
46 #define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
47 #define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
48 #define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
49
50 #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
51
52 #define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
53 #define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
54
55 #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
56 #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
57
58 #define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
59 #define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
60 #define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
61 #define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
62 #define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
63 #define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
64
65 #define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
66 #define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
67
68 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
69
70 typedef struct drm_version_32 {
71 int version_major; /**< Major version */
72 int version_minor; /**< Minor version */
73 int version_patchlevel;/**< Patch level */
74 u32 name_len; /**< Length of name buffer */
75 u32 name; /**< Name of driver */
76 u32 date_len; /**< Length of date buffer */
77 u32 date; /**< User-space buffer to hold date */
78 u32 desc_len; /**< Length of desc buffer */
79 u32 desc; /**< User-space buffer to hold desc */
80 } drm_version32_t;
81
82 static int compat_drm_version(struct file *file, unsigned int cmd,
83 unsigned long arg)
84 {
85 drm_version32_t v32;
86 drm_version_t __user *version;
87 int err;
88
89 if (copy_from_user(&v32, (void __user *) arg, sizeof(v32)))
90 return -EFAULT;
91
92 version = compat_alloc_user_space(sizeof(*version));
93 if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
94 return -EFAULT;
95 if (__put_user(v32.name_len, &version->name_len)
96 || __put_user((void __user *)(unsigned long)v32.name,
97 &version->name)
98 || __put_user(v32.date_len, &version->date_len)
99 || __put_user((void __user *)(unsigned long)v32.date,
100 &version->date)
101 || __put_user(v32.desc_len, &version->desc_len)
102 || __put_user((void __user *)(unsigned long)v32.desc,
103 &version->desc))
104 return -EFAULT;
105
106 err = drm_ioctl(file->f_dentry->d_inode, file,
107 DRM_IOCTL_VERSION, (unsigned long) version);
108 if (err)
109 return err;
110
111 if (__get_user(v32.version_major, &version->version_major)
112 || __get_user(v32.version_minor, &version->version_minor)
113 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
114 || __get_user(v32.name_len, &version->name_len)
115 || __get_user(v32.date_len, &version->date_len)
116 || __get_user(v32.desc_len, &version->desc_len))
117 return -EFAULT;
118
119 if (copy_to_user((void __user *) arg, &v32, sizeof(v32)))
120 return -EFAULT;
121 return 0;
122 }
123
124 typedef struct drm_unique32 {
125 u32 unique_len; /**< Length of unique */
126 u32 unique; /**< Unique name for driver instantiation */
127 } drm_unique32_t;
128
129 static int compat_drm_getunique(struct file *file, unsigned int cmd,
130 unsigned long arg)
131 {
132 drm_unique32_t uq32;
133 drm_unique_t __user *u;
134 int err;
135
136 if (copy_from_user(&uq32, (void __user *) arg, sizeof(uq32)))
137 return -EFAULT;
138
139 u = compat_alloc_user_space(sizeof(*u));
140 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
141 return -EFAULT;
142 if (__put_user(uq32.unique_len, &u->unique_len)
143 || __put_user((void __user *)(unsigned long) uq32.unique,
144 &u->unique))
145 return -EFAULT;
146
147 err = drm_ioctl(file->f_dentry->d_inode, file,
148 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 drm_unique_t __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->f_dentry->d_inode, file,
177 DRM_IOCTL_SET_UNIQUE, (unsigned long) u);
178 }
179
180 typedef struct drm_map32 {
181 u32 offset; /**< Requested physical address (0 for SAREA)*/
182 u32 size; /**< Requested physical size (bytes) */
183 drm_map_type_t type; /**< Type of memory to map */
184 drm_map_flags_t flags; /**< Flags */
185 u32 handle; /**< User-space: "Handle" to pass to mmap() */
186 int mtrr; /**< MTRR slot used */
187 } drm_map32_t;
188
189 static int compat_drm_getmap(struct file *file, unsigned int cmd,
190 unsigned long arg)
191 {
192 drm_map32_t __user *argp = (void __user *)arg;
193 drm_map32_t m32;
194 drm_map_t __user *map;
195 int idx, err;
196 void *handle;
197
198 if (get_user(idx, &argp->offset))
199 return -EFAULT;
200
201 map = compat_alloc_user_space(sizeof(*map));
202 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
203 return -EFAULT;
204 if (__put_user(idx, &map->offset))
205 return -EFAULT;
206
207 err = drm_ioctl(file->f_dentry->d_inode, file,
208 DRM_IOCTL_GET_MAP, (unsigned long) map);
209 if (err)
210 return err;
211
212 if (__get_user(m32.offset, &map->offset)
213 || __get_user(m32.size, &map->size)
214 || __get_user(m32.type, &map->type)
215 || __get_user(m32.flags, &map->flags)
216 || __get_user(handle, &map->handle)
217 || __get_user(m32.mtrr, &map->mtrr))
218 return -EFAULT;
219
220 m32.handle = (unsigned long) handle;
221 if (copy_to_user(argp, &m32, sizeof(m32)))
222 return -EFAULT;
223 return 0;
224
225 }
226
227 static int compat_drm_addmap(struct file *file, unsigned int cmd,
228 unsigned long arg)
229 {
230 drm_map32_t __user *argp = (void __user *)arg;
231 drm_map32_t m32;
232 drm_map_t __user *map;
233 int err;
234 void *handle;
235
236 if (copy_from_user(&m32, argp, sizeof(m32)))
237 return -EFAULT;
238
239 map = compat_alloc_user_space(sizeof(*map));
240 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
241 return -EFAULT;
242 if (__put_user(m32.offset, &map->offset)
243 || __put_user(m32.size, &map->size)
244 || __put_user(m32.type, &map->type)
245 || __put_user(m32.flags, &map->flags))
246 return -EFAULT;
247
248 err = drm_ioctl(file->f_dentry->d_inode, file,
249 DRM_IOCTL_ADD_MAP, (unsigned long) map);
250 if (err)
251 return err;
252
253 if (__get_user(m32.offset, &map->offset)
254 || __get_user(m32.mtrr, &map->mtrr)
255 || __get_user(handle, &map->handle))
256 return -EFAULT;
257
258 m32.handle = (unsigned long) handle;
259 if (m32.handle != (unsigned long) handle && printk_ratelimit())
260 printk(KERN_ERR "compat_drm_addmap truncated handle"
261 " %p for type %d offset %x\n",
262 handle, m32.type, m32.offset);
263
264 if (copy_to_user(argp, &m32, sizeof(m32)))
265 return -EFAULT;
266
267 return 0;
268 }
269
270 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
271 unsigned long arg)
272 {
273 drm_map32_t __user *argp = (void __user *)arg;
274 drm_map_t __user *map;
275 u32 handle;
276
277 if (get_user(handle, &argp->handle))
278 return -EFAULT;
279
280 map = compat_alloc_user_space(sizeof(*map));
281 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
282 return -EFAULT;
283 if (__put_user((void *)(unsigned long) handle, &map->handle))
284 return -EFAULT;
285
286 return drm_ioctl(file->f_dentry->d_inode, file,
287 DRM_IOCTL_RM_MAP, (unsigned long) map);
288 }
289
290 typedef struct drm_client32 {
291 int idx; /**< Which client desired? */
292 int auth; /**< Is client authenticated? */
293 u32 pid; /**< Process ID */
294 u32 uid; /**< User ID */
295 u32 magic; /**< Magic */
296 u32 iocs; /**< Ioctl count */
297 } drm_client32_t;
298
299 static int compat_drm_getclient(struct file *file, unsigned int cmd,
300 unsigned long arg)
301 {
302 drm_client32_t c32;
303 drm_client32_t __user *argp = (void __user *)arg;
304 drm_client_t __user *client;
305 int idx, err;
306
307 if (get_user(idx, &argp->idx))
308 return -EFAULT;
309
310 client = compat_alloc_user_space(sizeof(*client));
311 if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
312 return -EFAULT;
313 if (__put_user(idx, &client->idx))
314 return -EFAULT;
315
316 err = drm_ioctl(file->f_dentry->d_inode, file,
317 DRM_IOCTL_GET_CLIENT, (unsigned long) client);
318 if (err)
319 return err;
320
321 if (__get_user(c32.auth, &client->auth)
322 || __get_user(c32.pid, &client->pid)
323 || __get_user(c32.uid, &client->uid)
324 || __get_user(c32.magic, &client->magic)
325 || __get_user(c32.iocs, &client->iocs))
326 return -EFAULT;
327
328 if (copy_to_user(argp, &c32, sizeof(c32)))
329 return -EFAULT;
330 return 0;
331 }
332
333 typedef struct drm_stats32 {
334 u32 count;
335 struct {
336 u32 value;
337 drm_stat_type_t type;
338 } data[15];
339 } drm_stats32_t;
340
341 static int compat_drm_getstats(struct file *file, unsigned int cmd,
342 unsigned long arg)
343 {
344 drm_stats32_t s32;
345 drm_stats32_t __user *argp = (void __user *)arg;
346 drm_stats_t __user *stats;
347 int i, err;
348
349 stats = compat_alloc_user_space(sizeof(*stats));
350 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
351 return -EFAULT;
352
353 err = drm_ioctl(file->f_dentry->d_inode, file,
354 DRM_IOCTL_GET_STATS, (unsigned long) stats);
355 if (err)
356 return err;
357
358 if (__get_user(s32.count, &stats->count))
359 return -EFAULT;
360 for (i = 0; i < 15; ++i)
361 if (__get_user(s32.data[i].value, &stats->data[i].value)
362 || __get_user(s32.data[i].type, &stats->data[i].type))
363 return -EFAULT;
364
365 if (copy_to_user(argp, &s32, sizeof(s32)))
366 return -EFAULT;
367 return 0;
368 }
369
370 typedef struct drm_buf_desc32 {
371 int count; /**< Number of buffers of this size */
372 int size; /**< Size in bytes */
373 int low_mark; /**< Low water mark */
374 int high_mark; /**< High water mark */
375 int flags;
376 u32 agp_start; /**< Start address in the AGP aperture */
377 } drm_buf_desc32_t;
378
379 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
380 unsigned long arg)
381 {
382 drm_buf_desc32_t __user *argp = (void __user *)arg;
383 drm_buf_desc_t __user *buf;
384 int err;
385 unsigned long agp_start;
386
387 buf = compat_alloc_user_space(sizeof(*buf));
388 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
389 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
390 return -EFAULT;
391
392 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
393 || __get_user(agp_start, &argp->agp_start)
394 || __put_user(agp_start, &buf->agp_start))
395 return -EFAULT;
396
397 err = drm_ioctl(file->f_dentry->d_inode, file,
398 DRM_IOCTL_ADD_BUFS, (unsigned long) buf);
399 if (err)
400 return err;
401
402 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
403 || __get_user(agp_start, &buf->agp_start)
404 || __put_user(agp_start, &argp->agp_start))
405 return -EFAULT;
406
407 return 0;
408 }
409
410 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
411 unsigned long arg)
412 {
413 drm_buf_desc32_t b32;
414 drm_buf_desc32_t __user *argp = (void __user *)arg;
415 drm_buf_desc_t __user *buf;
416
417 if (copy_from_user(&b32, argp, sizeof(b32)))
418 return -EFAULT;
419
420 buf = compat_alloc_user_space(sizeof(*buf));
421 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
422 return -EFAULT;
423
424 if (__put_user(b32.size, &buf->size)
425 || __put_user(b32.low_mark, &buf->low_mark)
426 || __put_user(b32.high_mark, &buf->high_mark))
427 return -EFAULT;
428
429 return drm_ioctl(file->f_dentry->d_inode, file,
430 DRM_IOCTL_MARK_BUFS, (unsigned long) buf);
431 }
432
433 typedef struct drm_buf_info32 {
434 int count; /**< Entries in list */
435 u32 list;
436 } drm_buf_info32_t;
437
438 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
439 unsigned long arg)
440 {
441 drm_buf_info32_t req32;
442 drm_buf_info32_t __user *argp = (void __user *)arg;
443 drm_buf_desc32_t __user *to;
444 drm_buf_info_t __user *request;
445 drm_buf_desc_t __user *list;
446 size_t nbytes;
447 int i, err;
448 int count, actual;
449
450 if (copy_from_user(&req32, argp, sizeof(req32)))
451 return -EFAULT;
452
453 count = req32.count;
454 to = (drm_buf_desc32_t __user *)(unsigned long) req32.list;
455 if (count < 0)
456 count = 0;
457 if (count > 0
458 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
459 return -EFAULT;
460
461 nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
462 request = compat_alloc_user_space(nbytes);
463 if (!access_ok(VERIFY_WRITE, request, nbytes))
464 return -EFAULT;
465 list = (drm_buf_desc_t *) (request + 1);
466
467 if (__put_user(count, &request->count)
468 || __put_user(list, &request->list))
469 return -EFAULT;
470
471 err = drm_ioctl(file->f_dentry->d_inode, file,
472 DRM_IOCTL_INFO_BUFS, (unsigned long) request);
473 if (err)
474 return err;
475
476 if (__get_user(actual, &request->count))
477 return -EFAULT;
478 if (count >= actual)
479 for (i = 0; i < actual; ++i)
480 if (__copy_in_user(&to[i], &list[i],
481 offsetof(drm_buf_desc_t, flags)))
482 return -EFAULT;
483
484 if (__put_user(actual, &argp->count))
485 return -EFAULT;
486
487 return 0;
488 }
489
490 typedef struct drm_buf_pub32 {
491 int idx; /**< Index into the master buffer list */
492 int total; /**< Buffer size */
493 int used; /**< Amount of buffer in use (for DMA) */
494 u32 address; /**< Address of buffer */
495 } drm_buf_pub32_t;
496
497 typedef struct drm_buf_map32 {
498 int count; /**< Length of the buffer list */
499 u32 virtual; /**< Mmap'd area in user-virtual */
500 u32 list; /**< Buffer information */
501 } drm_buf_map32_t;
502
503 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
504 unsigned long arg)
505 {
506 drm_buf_map32_t __user *argp = (void __user *)arg;
507 drm_buf_map32_t req32;
508 drm_buf_pub32_t __user *list32;
509 drm_buf_map_t __user *request;
510 drm_buf_pub_t __user *list;
511 int i, err;
512 int count, actual;
513 size_t nbytes;
514 void __user *addr;
515
516 if (copy_from_user(&req32, argp, sizeof(req32)))
517 return -EFAULT;
518 count = req32.count;
519 list32 = (void __user *)(unsigned long)req32.list;
520
521 if (count < 0)
522 return -EINVAL;
523 nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
524 request = compat_alloc_user_space(nbytes);
525 if (!access_ok(VERIFY_WRITE, request, nbytes))
526 return -EFAULT;
527 list = (drm_buf_pub_t *) (request + 1);
528
529 if (__put_user(count, &request->count)
530 || __put_user(list, &request->list))
531 return -EFAULT;
532
533 err = drm_ioctl(file->f_dentry->d_inode, file,
534 DRM_IOCTL_MAP_BUFS, (unsigned long) request);
535 if (err)
536 return err;
537
538 if (__get_user(actual, &request->count))
539 return -EFAULT;
540 if (count >= actual)
541 for (i = 0; i < actual; ++i)
542 if (__copy_in_user(&list32[i], &list[i],
543 offsetof(drm_buf_pub_t, address))
544 || __get_user(addr, &list[i].address)
545 || __put_user((unsigned long) addr,
546 &list32[i].address))
547 return -EFAULT;
548
549 if (__put_user(actual, &argp->count)
550 || __get_user(addr, &request->virtual)
551 || __put_user((unsigned long) addr, &argp->virtual))
552 return -EFAULT;
553
554 return 0;
555 }
556
557 typedef struct drm_buf_free32 {
558 int count;
559 u32 list;
560 } drm_buf_free32_t;
561
562 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
563 unsigned long arg)
564 {
565 drm_buf_free32_t req32;
566 drm_buf_free_t __user *request;
567 drm_buf_free32_t __user *argp = (void __user *)arg;
568
569 if (copy_from_user(&req32, argp, sizeof(req32)))
570 return -EFAULT;
571
572 request = compat_alloc_user_space(sizeof(*request));
573 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
574 return -EFAULT;
575 if (__put_user(req32.count, &request->count)
576 || __put_user((int __user *)(unsigned long) req32.list,
577 &request->list))
578 return -EFAULT;
579
580 return drm_ioctl(file->f_dentry->d_inode, file,
581 DRM_IOCTL_FREE_BUFS, (unsigned long) request);
582 }
583
584 typedef struct drm_ctx_priv_map32 {
585 unsigned int ctx_id; /**< Context requesting private mapping */
586 u32 handle; /**< Handle of map */
587 } drm_ctx_priv_map32_t;
588
589 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
590 unsigned long arg)
591 {
592 drm_ctx_priv_map32_t req32;
593 drm_ctx_priv_map_t __user *request;
594 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
595
596 if (copy_from_user(&req32, argp, sizeof(req32)))
597 return -EFAULT;
598
599 request = compat_alloc_user_space(sizeof(*request));
600 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
601 return -EFAULT;
602 if (__put_user(req32.ctx_id, &request->ctx_id)
603 || __put_user((void *)(unsigned long) req32.handle,
604 &request->handle))
605 return -EFAULT;
606
607 return drm_ioctl(file->f_dentry->d_inode, file,
608 DRM_IOCTL_SET_SAREA_CTX, (unsigned long) request);
609 }
610
611 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
612 unsigned long arg)
613 {
614 drm_ctx_priv_map_t __user *request;
615 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
616 int err;
617 unsigned int ctx_id;
618 void *handle;
619
620 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
621 || __get_user(ctx_id, &argp->ctx_id))
622 return -EFAULT;
623
624 request = compat_alloc_user_space(sizeof(*request));
625 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
626 return -EFAULT;
627 if (__put_user(ctx_id, &request->ctx_id))
628 return -EFAULT;
629
630 err = drm_ioctl(file->f_dentry->d_inode, file,
631 DRM_IOCTL_GET_SAREA_CTX, (unsigned long) request);
632 if (err)
633 return err;
634
635 if (__get_user(handle, &request->handle)
636 || __put_user((unsigned long) handle, &argp->handle))
637 return -EFAULT;
638
639 return 0;
640 }
641
642 typedef struct drm_ctx_res32 {
643 int count;
644 u32 contexts;
645 } drm_ctx_res32_t;
646
647 static int compat_drm_resctx(struct file *file, unsigned int cmd,
648 unsigned long arg)
649 {
650 drm_ctx_res32_t __user *argp = (void __user *)arg;
651 drm_ctx_res32_t res32;
652 drm_ctx_res_t __user *res;
653 int err;
654
655 if (copy_from_user(&res32, argp, sizeof(res32)))
656 return -EFAULT;
657
658 res = compat_alloc_user_space(sizeof(*res));
659 if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
660 return -EFAULT;
661 if (__put_user(res32.count, &res->count)
662 || __put_user((drm_ctx_t __user *)(unsigned long) res32.contexts,
663 &res->contexts))
664 return -EFAULT;
665
666 err = drm_ioctl(file->f_dentry->d_inode, file,
667 DRM_IOCTL_RES_CTX, (unsigned long) res);
668 if (err)
669 return err;
670
671 if (__get_user(res32.count, &res->count)
672 || __put_user(res32.count, &argp->count))
673 return -EFAULT;
674
675 return 0;
676 }
677
678 typedef struct drm_dma32 {
679 int context; /**< Context handle */
680 int send_count; /**< Number of buffers to send */
681 u32 send_indices; /**< List of handles to buffers */
682 u32 send_sizes; /**< Lengths of data to send */
683 drm_dma_flags_t flags; /**< Flags */
684 int request_count; /**< Number of buffers requested */
685 int request_size; /**< Desired size for buffers */
686 u32 request_indices; /**< Buffer information */
687 u32 request_sizes;
688 int granted_count; /**< Number of buffers granted */
689 } drm_dma32_t;
690
691 static int compat_drm_dma(struct file *file, unsigned int cmd,
692 unsigned long arg)
693 {
694 drm_dma32_t d32;
695 drm_dma32_t __user *argp = (void __user *) arg;
696 drm_dma_t __user *d;
697 int err;
698
699 if (copy_from_user(&d32, argp, sizeof(d32)))
700 return -EFAULT;
701
702 d = compat_alloc_user_space(sizeof(*d));
703 if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
704 return -EFAULT;
705
706 if (__put_user(d32.context, &d->context)
707 || __put_user(d32.send_count, &d->send_count)
708 || __put_user((int __user *)(unsigned long) d32.send_indices,
709 &d->send_indices)
710 || __put_user((int __user *)(unsigned long) d32.send_sizes,
711 &d->send_sizes)
712 || __put_user(d32.flags, &d->flags)
713 || __put_user(d32.request_count, &d->request_count)
714 || __put_user((int __user *)(unsigned long) d32.request_indices,
715 &d->request_indices)
716 || __put_user((int __user *)(unsigned long) d32.request_sizes,
717 &d->request_sizes))
718 return -EFAULT;
719
720 err = drm_ioctl(file->f_dentry->d_inode, file,
721 DRM_IOCTL_DMA, (unsigned long) d);
722 if (err)
723 return err;
724
725 if (__get_user(d32.request_size, &d->request_size)
726 || __get_user(d32.granted_count, &d->granted_count)
727 || __put_user(d32.request_size, &argp->request_size)
728 || __put_user(d32.granted_count, &argp->granted_count))
729 return -EFAULT;
730
731 return 0;
732 }
733
734 #if __OS_HAS_AGP
735 typedef struct drm_agp_mode32 {
736 u32 mode; /**< AGP mode */
737 } drm_agp_mode32_t;
738
739 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
740 unsigned long arg)
741 {
742 drm_agp_mode32_t __user *argp = (void __user *)arg;
743 drm_agp_mode32_t m32;
744 drm_agp_mode_t __user *mode;
745
746 if (get_user(m32.mode, &argp->mode))
747 return -EFAULT;
748
749 mode = compat_alloc_user_space(sizeof(*mode));
750 if (put_user(m32.mode, &mode->mode))
751 return -EFAULT;
752
753 return drm_ioctl(file->f_dentry->d_inode, file,
754 DRM_IOCTL_AGP_ENABLE, (unsigned long) mode);
755 }
756
757 typedef struct drm_agp_info32 {
758 int agp_version_major;
759 int agp_version_minor;
760 u32 mode;
761 u32 aperture_base; /* physical address */
762 u32 aperture_size; /* bytes */
763 u32 memory_allowed; /* bytes */
764 u32 memory_used;
765
766 /* PCI information */
767 unsigned short id_vendor;
768 unsigned short id_device;
769 } drm_agp_info32_t;
770
771 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
772 unsigned long arg)
773 {
774 drm_agp_info32_t __user *argp = (void __user *)arg;
775 drm_agp_info32_t i32;
776 drm_agp_info_t __user *info;
777 int err;
778
779 info = compat_alloc_user_space(sizeof(*info));
780 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
781 return -EFAULT;
782
783 err = drm_ioctl(file->f_dentry->d_inode, file,
784 DRM_IOCTL_AGP_INFO, (unsigned long) info);
785 if (err)
786 return err;
787
788 if (__get_user(i32.agp_version_major, &info->agp_version_major)
789 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
790 || __get_user(i32.mode, &info->mode)
791 || __get_user(i32.aperture_base, &info->aperture_base)
792 || __get_user(i32.aperture_size, &info->aperture_size)
793 || __get_user(i32.memory_allowed, &info->memory_allowed)
794 || __get_user(i32.memory_used, &info->memory_used)
795 || __get_user(i32.id_vendor, &info->id_vendor)
796 || __get_user(i32.id_device, &info->id_device))
797 return -EFAULT;
798
799 if (copy_to_user(argp, &i32, sizeof(i32)))
800 return -EFAULT;
801
802 return 0;
803 }
804
805 typedef struct drm_agp_buffer32 {
806 u32 size; /**< In bytes -- will round to page boundary */
807 u32 handle; /**< Used for binding / unbinding */
808 u32 type; /**< Type of memory to allocate */
809 u32 physical; /**< Physical used by i810 */
810 } drm_agp_buffer32_t;
811
812 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
813 unsigned long arg)
814 {
815 drm_agp_buffer32_t __user *argp = (void __user *)arg;
816 drm_agp_buffer32_t req32;
817 drm_agp_buffer_t __user *request;
818 int err;
819
820 if (copy_from_user(&req32, argp, sizeof(req32)))
821 return -EFAULT;
822
823 request = compat_alloc_user_space(sizeof(*request));
824 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
825 || __put_user(req32.size, &request->size)
826 || __put_user(req32.type, &request->type))
827 return -EFAULT;
828
829 err = drm_ioctl(file->f_dentry->d_inode, file,
830 DRM_IOCTL_AGP_ALLOC, (unsigned long) request);
831 if (err)
832 return err;
833
834 if (__get_user(req32.handle, &request->handle)
835 || __get_user(req32.physical, &request->physical)
836 || copy_to_user(argp, &req32, sizeof(req32))) {
837 drm_ioctl(file->f_dentry->d_inode, file,
838 DRM_IOCTL_AGP_FREE, (unsigned long) request);
839 return -EFAULT;
840 }
841
842 return 0;
843 }
844
845 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
846 unsigned long arg)
847 {
848 drm_agp_buffer32_t __user *argp = (void __user *)arg;
849 drm_agp_buffer_t __user *request;
850 u32 handle;
851
852 request = compat_alloc_user_space(sizeof(*request));
853 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
854 || get_user(handle, &argp->handle)
855 || __put_user(handle, &request->handle))
856 return -EFAULT;
857
858 return drm_ioctl(file->f_dentry->d_inode, file,
859 DRM_IOCTL_AGP_FREE, (unsigned long) request);
860 }
861
862 typedef struct drm_agp_binding32 {
863 u32 handle; /**< From drm_agp_buffer */
864 u32 offset; /**< In bytes -- will round to page boundary */
865 } drm_agp_binding32_t;
866
867 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
868 unsigned long arg)
869 {
870 drm_agp_binding32_t __user *argp = (void __user *)arg;
871 drm_agp_binding32_t req32;
872 drm_agp_binding_t __user *request;
873
874 if (copy_from_user(&req32, argp, sizeof(req32)))
875 return -EFAULT;
876
877 request = compat_alloc_user_space(sizeof(*request));
878 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
879 || __put_user(req32.handle, &request->handle)
880 || __put_user(req32.offset, &request->offset))
881 return -EFAULT;
882
883 return drm_ioctl(file->f_dentry->d_inode, file,
884 DRM_IOCTL_AGP_BIND, (unsigned long) request);
885 }
886
887 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
888 unsigned long arg)
889 {
890 drm_agp_binding32_t __user *argp = (void __user *)arg;
891 drm_agp_binding_t __user *request;
892 u32 handle;
893
894 request = compat_alloc_user_space(sizeof(*request));
895 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
896 || get_user(handle, &argp->handle)
897 || __put_user(handle, &request->handle))
898 return -EFAULT;
899
900 return drm_ioctl(file->f_dentry->d_inode, file,
901 DRM_IOCTL_AGP_UNBIND, (unsigned long) request);
902 }
903 #endif /* __OS_HAS_AGP */
904
905 typedef struct drm_scatter_gather32 {
906 u32 size; /**< In bytes -- will round to page boundary */
907 u32 handle; /**< Used for mapping / unmapping */
908 } drm_scatter_gather32_t;
909
910 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
911 unsigned long arg)
912 {
913 drm_scatter_gather32_t __user *argp = (void __user *)arg;
914 drm_scatter_gather_t __user *request;
915 int err;
916 unsigned long x;
917
918 request = compat_alloc_user_space(sizeof(*request));
919 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
920 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
921 || __get_user(x, &argp->size)
922 || __put_user(x, &request->size))
923 return -EFAULT;
924
925 err = drm_ioctl(file->f_dentry->d_inode, file,
926 DRM_IOCTL_SG_ALLOC, (unsigned long) request);
927 if (err)
928 return err;
929
930 /* XXX not sure about the handle conversion here... */
931 if (__get_user(x, &request->handle)
932 || __put_user(x >> PAGE_SHIFT, &argp->handle))
933 return -EFAULT;
934
935 return 0;
936 }
937
938 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
939 unsigned long arg)
940 {
941 drm_scatter_gather32_t __user *argp = (void __user *)arg;
942 drm_scatter_gather_t __user *request;
943 unsigned long x;
944
945 request = compat_alloc_user_space(sizeof(*request));
946 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
947 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
948 || __get_user(x, &argp->handle)
949 || __put_user(x << PAGE_SHIFT, &request->handle))
950 return -EFAULT;
951
952 return drm_ioctl(file->f_dentry->d_inode, file,
953 DRM_IOCTL_SG_FREE, (unsigned long) request);
954 }
955
956 struct drm_wait_vblank_request32 {
957 drm_vblank_seq_type_t type;
958 unsigned int sequence;
959 u32 signal;
960 };
961
962 struct drm_wait_vblank_reply32 {
963 drm_vblank_seq_type_t type;
964 unsigned int sequence;
965 s32 tval_sec;
966 s32 tval_usec;
967 };
968
969 typedef union drm_wait_vblank32 {
970 struct drm_wait_vblank_request32 request;
971 struct drm_wait_vblank_reply32 reply;
972 } drm_wait_vblank32_t;
973
974 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
975 unsigned long arg)
976 {
977 drm_wait_vblank32_t __user *argp = (void __user *)arg;
978 drm_wait_vblank32_t req32;
979 drm_wait_vblank_t __user *request;
980 int err;
981
982 if (copy_from_user(&req32, argp, sizeof(req32)))
983 return -EFAULT;
984
985 request = compat_alloc_user_space(sizeof(*request));
986 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
987 || __put_user(req32.request.type, &request->request.type)
988 || __put_user(req32.request.sequence, &request->request.sequence)
989 || __put_user(req32.request.signal, &request->request.signal))
990 return -EFAULT;
991
992 err = drm_ioctl(file->f_dentry->d_inode, file,
993 DRM_IOCTL_WAIT_VBLANK, (unsigned long) request);
994 if (err)
995 return err;
996
997 if (__get_user(req32.reply.type, &request->reply.type)
998 || __get_user(req32.reply.sequence, &request->reply.sequence)
999 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1000 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1001 return -EFAULT;
1002
1003 if (copy_to_user(argp, &req32, sizeof(req32)))
1004 return -EFAULT;
1005
1006 return 0;
1007 }
1008
1009 drm_ioctl_compat_t *drm_compat_ioctls[] = {
1010 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1011 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1012 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1013 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1014 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1015 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1016 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1017 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1018 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1019 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1020 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1021 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1022 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1023 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1024 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1025 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1026 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1027 #if __OS_HAS_AGP
1028 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1029 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1030 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1031 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1032 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1033 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1034 #endif
1035 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1036 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1037 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1038 };
1039
1040 /**
1041 * Called whenever a 32-bit process running under a 64-bit kernel
1042 * performs an ioctl on /dev/drm.
1043 *
1044 * \param filp file pointer.
1045 * \param cmd command.
1046 * \param arg user argument.
1047 * \return zero on success or negative number on failure.
1048 */
1049 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1050 {
1051 unsigned int nr = DRM_IOCTL_NR(cmd);
1052 drm_ioctl_compat_t *fn;
1053 int ret;
1054
1055 if (nr >= DRM_ARRAY_SIZE(drm_compat_ioctls))
1056 return -ENOTTY;
1057
1058 fn = drm_compat_ioctls[nr];
1059
1060 lock_kernel(); /* XXX for now */
1061 if (fn != NULL)
1062 ret = (*fn)(filp, cmd, arg);
1063 else
1064 ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
1065 unlock_kernel();
1066
1067 return ret;
1068 }
1069 EXPORT_SYMBOL(drm_compat_ioctl);
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