remove include of linux ioctl32.h from drm drivers
[platform/upstream/libdrm.git] / linux-core / drm_ioc32.c
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_WAIT_VBLANK32         DRM_IOWR(0x3a, drm_wait_vblank32_t)
68
69 typedef struct drm_version_32 {
70         int version_major;        /**< Major version */
71         int version_minor;        /**< Minor version */
72         int version_patchlevel;   /**< Patch level */
73         u32 name_len;             /**< Length of name buffer */
74         u32 name;                 /**< Name of driver */
75         u32 date_len;             /**< Length of date buffer */
76         u32 date;                 /**< User-space buffer to hold date */
77         u32 desc_len;             /**< Length of desc buffer */
78         u32 desc;                 /**< User-space buffer to hold desc */
79 } drm_version32_t;
80
81 static int compat_drm_version(struct file *file, unsigned int cmd,
82                               unsigned long arg)
83 {
84         drm_version32_t v32;
85         drm_version_t __user *version;
86         int err;
87
88         if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
89                 return -EFAULT;
90
91         version = compat_alloc_user_space(sizeof(*version));
92         if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
93                 return -EFAULT;
94         if (__put_user(v32.name_len, &version->name_len)
95             || __put_user((void __user *)(unsigned long)v32.name,
96                           &version->name)
97             || __put_user(v32.date_len, &version->date_len)
98             || __put_user((void __user *)(unsigned long)v32.date,
99                           &version->date)
100             || __put_user(v32.desc_len, &version->desc_len)
101             || __put_user((void __user *)(unsigned long)v32.desc,
102                           &version->desc))
103                 return -EFAULT;
104
105         err = drm_ioctl(file->f_dentry->d_inode, file,
106                         DRM_IOCTL_VERSION, (unsigned long)version);
107         if (err)
108                 return err;
109
110         if (__get_user(v32.version_major, &version->version_major)
111             || __get_user(v32.version_minor, &version->version_minor)
112             || __get_user(v32.version_patchlevel, &version->version_patchlevel)
113             || __get_user(v32.name_len, &version->name_len)
114             || __get_user(v32.date_len, &version->date_len)
115             || __get_user(v32.desc_len, &version->desc_len))
116                 return -EFAULT;
117
118         if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
119                 return -EFAULT;
120         return 0;
121 }
122
123 typedef struct drm_unique32 {
124         u32 unique_len; /**< Length of unique */
125         u32 unique;     /**< Unique name for driver instantiation */
126 } drm_unique32_t;
127
128 static int compat_drm_getunique(struct file *file, unsigned int cmd,
129                                 unsigned long arg)
130 {
131         drm_unique32_t uq32;
132         drm_unique_t __user *u;
133         int err;
134
135         if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
136                 return -EFAULT;
137
138         u = compat_alloc_user_space(sizeof(*u));
139         if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
140                 return -EFAULT;
141         if (__put_user(uq32.unique_len, &u->unique_len)
142             || __put_user((void __user *)(unsigned long)uq32.unique,
143                           &u->unique))
144                 return -EFAULT;
145
146         err = drm_ioctl(file->f_dentry->d_inode, file,
147                         DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
148         if (err)
149                 return err;
150
151         if (__get_user(uq32.unique_len, &u->unique_len))
152                 return -EFAULT;
153         if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
154                 return -EFAULT;
155         return 0;
156 }
157
158 static int compat_drm_setunique(struct file *file, unsigned int cmd,
159                                 unsigned long arg)
160 {
161         drm_unique32_t uq32;
162         drm_unique_t __user *u;
163
164         if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
165                 return -EFAULT;
166
167         u = compat_alloc_user_space(sizeof(*u));
168         if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
169                 return -EFAULT;
170         if (__put_user(uq32.unique_len, &u->unique_len)
171             || __put_user((void __user *)(unsigned long)uq32.unique,
172                           &u->unique))
173                 return -EFAULT;
174
175         return drm_ioctl(file->f_dentry->d_inode, file,
176                          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         drm_map_type_t type;    /**< Type of memory to map */
183         drm_map_flags_t 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         drm_map_t __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->f_dentry->d_inode, file,
207                         DRM_IOCTL_GET_MAP, (unsigned long)map);
208         if (err)
209                 return err;
210
211         if (__get_user(m32.offset, &map->offset)
212             || __get_user(m32.size, &map->size)
213             || __get_user(m32.type, &map->type)
214             || __get_user(m32.flags, &map->flags)
215             || __get_user(handle, &map->handle)
216             || __get_user(m32.mtrr, &map->mtrr))
217                 return -EFAULT;
218
219         m32.handle = (unsigned long)handle;
220         if (copy_to_user(argp, &m32, sizeof(m32)))
221                 return -EFAULT;
222         return 0;
223
224 }
225
226 static int compat_drm_addmap(struct file *file, unsigned int cmd,
227                              unsigned long arg)
228 {
229         drm_map32_t __user *argp = (void __user *)arg;
230         drm_map32_t m32;
231         drm_map_t __user *map;
232         int err;
233         void *handle;
234
235         if (copy_from_user(&m32, argp, sizeof(m32)))
236                 return -EFAULT;
237
238         map = compat_alloc_user_space(sizeof(*map));
239         if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
240                 return -EFAULT;
241         if (__put_user(m32.offset, &map->offset)
242             || __put_user(m32.size, &map->size)
243             || __put_user(m32.type, &map->type)
244             || __put_user(m32.flags, &map->flags))
245                 return -EFAULT;
246
247         err = drm_ioctl(file->f_dentry->d_inode, file,
248                         DRM_IOCTL_ADD_MAP, (unsigned long)map);
249         if (err)
250                 return err;
251
252         if (__get_user(m32.offset, &map->offset)
253             || __get_user(m32.mtrr, &map->mtrr)
254             || __get_user(handle, &map->handle))
255                 return -EFAULT;
256
257         m32.handle = (unsigned long)handle;
258         if (m32.handle != (unsigned long)handle && printk_ratelimit())
259                 printk(KERN_ERR "compat_drm_addmap truncated handle"
260                        " %p for type %d offset %x\n",
261                        handle, m32.type, m32.offset);
262
263         if (copy_to_user(argp, &m32, sizeof(m32)))
264                 return -EFAULT;
265
266         return 0;
267 }
268
269 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
270                             unsigned long arg)
271 {
272         drm_map32_t __user *argp = (void __user *)arg;
273         drm_map_t __user *map;
274         u32 handle;
275
276         if (get_user(handle, &argp->handle))
277                 return -EFAULT;
278
279         map = compat_alloc_user_space(sizeof(*map));
280         if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
281                 return -EFAULT;
282         if (__put_user((void *)(unsigned long)handle, &map->handle))
283                 return -EFAULT;
284
285         return drm_ioctl(file->f_dentry->d_inode, file,
286                          DRM_IOCTL_RM_MAP, (unsigned long)map);
287 }
288
289 typedef struct drm_client32 {
290         int idx;        /**< Which client desired? */
291         int auth;       /**< Is client authenticated? */
292         u32 pid;        /**< Process ID */
293         u32 uid;        /**< User ID */
294         u32 magic;      /**< Magic */
295         u32 iocs;       /**< Ioctl count */
296 } drm_client32_t;
297
298 static int compat_drm_getclient(struct file *file, unsigned int cmd,
299                                 unsigned long arg)
300 {
301         drm_client32_t c32;
302         drm_client32_t __user *argp = (void __user *)arg;
303         drm_client_t __user *client;
304         int idx, err;
305
306         if (get_user(idx, &argp->idx))
307                 return -EFAULT;
308
309         client = compat_alloc_user_space(sizeof(*client));
310         if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
311                 return -EFAULT;
312         if (__put_user(idx, &client->idx))
313                 return -EFAULT;
314
315         err = drm_ioctl(file->f_dentry->d_inode, file,
316                         DRM_IOCTL_GET_CLIENT, (unsigned long)client);
317         if (err)
318                 return err;
319
320         if (__get_user(c32.auth, &client->auth)
321             || __get_user(c32.pid, &client->pid)
322             || __get_user(c32.uid, &client->uid)
323             || __get_user(c32.magic, &client->magic)
324             || __get_user(c32.iocs, &client->iocs))
325                 return -EFAULT;
326
327         if (copy_to_user(argp, &c32, sizeof(c32)))
328                 return -EFAULT;
329         return 0;
330 }
331
332 typedef struct drm_stats32 {
333         u32 count;
334         struct {
335                 u32 value;
336                 drm_stat_type_t type;
337         } data[15];
338 } drm_stats32_t;
339
340 static int compat_drm_getstats(struct file *file, unsigned int cmd,
341                                unsigned long arg)
342 {
343         drm_stats32_t s32;
344         drm_stats32_t __user *argp = (void __user *)arg;
345         drm_stats_t __user *stats;
346         int i, err;
347
348         stats = compat_alloc_user_space(sizeof(*stats));
349         if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
350                 return -EFAULT;
351
352         err = drm_ioctl(file->f_dentry->d_inode, file,
353                         DRM_IOCTL_GET_STATS, (unsigned long)stats);
354         if (err)
355                 return err;
356
357         if (__get_user(s32.count, &stats->count))
358                 return -EFAULT;
359         for (i = 0; i < 15; ++i)
360                 if (__get_user(s32.data[i].value, &stats->data[i].value)
361                     || __get_user(s32.data[i].type, &stats->data[i].type))
362                         return -EFAULT;
363
364         if (copy_to_user(argp, &s32, sizeof(s32)))
365                 return -EFAULT;
366         return 0;
367 }
368
369 typedef struct drm_buf_desc32 {
370         int count;               /**< Number of buffers of this size */
371         int size;                /**< Size in bytes */
372         int low_mark;            /**< Low water mark */
373         int high_mark;           /**< High water mark */
374         int flags;
375         u32 agp_start;           /**< Start address in the AGP aperture */
376 } drm_buf_desc32_t;
377
378 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
379                               unsigned long arg)
380 {
381         drm_buf_desc32_t __user *argp = (void __user *)arg;
382         drm_buf_desc_t __user *buf;
383         int err;
384         unsigned long agp_start;
385
386         buf = compat_alloc_user_space(sizeof(*buf));
387         if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
388             || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
389                 return -EFAULT;
390
391         if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
392             || __get_user(agp_start, &argp->agp_start)
393             || __put_user(agp_start, &buf->agp_start))
394                 return -EFAULT;
395
396         err = drm_ioctl(file->f_dentry->d_inode, file,
397                         DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
398         if (err)
399                 return err;
400
401         if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
402             || __get_user(agp_start, &buf->agp_start)
403             || __put_user(agp_start, &argp->agp_start))
404                 return -EFAULT;
405
406         return 0;
407 }
408
409 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
410                                unsigned long arg)
411 {
412         drm_buf_desc32_t b32;
413         drm_buf_desc32_t __user *argp = (void __user *)arg;
414         drm_buf_desc_t __user *buf;
415
416         if (copy_from_user(&b32, argp, sizeof(b32)))
417                 return -EFAULT;
418
419         buf = compat_alloc_user_space(sizeof(*buf));
420         if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
421                 return -EFAULT;
422
423         if (__put_user(b32.size, &buf->size)
424             || __put_user(b32.low_mark, &buf->low_mark)
425             || __put_user(b32.high_mark, &buf->high_mark))
426                 return -EFAULT;
427
428         return drm_ioctl(file->f_dentry->d_inode, file,
429                          DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
430 }
431
432 typedef struct drm_buf_info32 {
433         int count;              /**< Entries in list */
434         u32 list;
435 } drm_buf_info32_t;
436
437 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
438                                unsigned long arg)
439 {
440         drm_buf_info32_t req32;
441         drm_buf_info32_t __user *argp = (void __user *)arg;
442         drm_buf_desc32_t __user *to;
443         drm_buf_info_t __user *request;
444         drm_buf_desc_t __user *list;
445         size_t nbytes;
446         int i, err;
447         int count, actual;
448
449         if (copy_from_user(&req32, argp, sizeof(req32)))
450                 return -EFAULT;
451
452         count = req32.count;
453         to = (drm_buf_desc32_t __user *)(unsigned long)req32.list;
454         if (count < 0)
455                 count = 0;
456         if (count > 0
457             && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
458                 return -EFAULT;
459
460         nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
461         request = compat_alloc_user_space(nbytes);
462         if (!access_ok(VERIFY_WRITE, request, nbytes))
463                 return -EFAULT;
464         list = (drm_buf_desc_t *) (request + 1);
465
466         if (__put_user(count, &request->count)
467             || __put_user(list, &request->list))
468                 return -EFAULT;
469
470         err = drm_ioctl(file->f_dentry->d_inode, file,
471                         DRM_IOCTL_INFO_BUFS, (unsigned long)request);
472         if (err)
473                 return err;
474
475         if (__get_user(actual, &request->count))
476                 return -EFAULT;
477         if (count >= actual)
478                 for (i = 0; i < actual; ++i)
479                         if (__copy_in_user(&to[i], &list[i],
480                                            offsetof(drm_buf_desc_t, flags)))
481                                 return -EFAULT;
482
483         if (__put_user(actual, &argp->count))
484                 return -EFAULT;
485
486         return 0;
487 }
488
489 typedef struct drm_buf_pub32 {
490         int idx;                /**< Index into the master buffer list */
491         int total;              /**< Buffer size */
492         int used;               /**< Amount of buffer in use (for DMA) */
493         u32 address;            /**< Address of buffer */
494 } drm_buf_pub32_t;
495
496 typedef struct drm_buf_map32 {
497         int count;              /**< Length of the buffer list */
498         u32 virtual;            /**< Mmap'd area in user-virtual */
499         u32 list;               /**< Buffer information */
500 } drm_buf_map32_t;
501
502 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
503                               unsigned long arg)
504 {
505         drm_buf_map32_t __user *argp = (void __user *)arg;
506         drm_buf_map32_t req32;
507         drm_buf_pub32_t __user *list32;
508         drm_buf_map_t __user *request;
509         drm_buf_pub_t __user *list;
510         int i, err;
511         int count, actual;
512         size_t nbytes;
513         void __user *addr;
514
515         if (copy_from_user(&req32, argp, sizeof(req32)))
516                 return -EFAULT;
517         count = req32.count;
518         list32 = (void __user *)(unsigned long)req32.list;
519
520         if (count < 0)
521                 return -EINVAL;
522         nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
523         request = compat_alloc_user_space(nbytes);
524         if (!access_ok(VERIFY_WRITE, request, nbytes))
525                 return -EFAULT;
526         list = (drm_buf_pub_t *) (request + 1);
527
528         if (__put_user(count, &request->count)
529             || __put_user(list, &request->list))
530                 return -EFAULT;
531
532         err = drm_ioctl(file->f_dentry->d_inode, file,
533                         DRM_IOCTL_MAP_BUFS, (unsigned long)request);
534         if (err)
535                 return err;
536
537         if (__get_user(actual, &request->count))
538                 return -EFAULT;
539         if (count >= actual)
540                 for (i = 0; i < actual; ++i)
541                         if (__copy_in_user(&list32[i], &list[i],
542                                            offsetof(drm_buf_pub_t, address))
543                             || __get_user(addr, &list[i].address)
544                             || __put_user((unsigned long)addr,
545                                           &list32[i].address))
546                                 return -EFAULT;
547
548         if (__put_user(actual, &argp->count)
549             || __get_user(addr, &request->virtual)
550             || __put_user((unsigned long)addr, &argp->virtual))
551                 return -EFAULT;
552
553         return 0;
554 }
555
556 typedef struct drm_buf_free32 {
557         int count;
558         u32 list;
559 } drm_buf_free32_t;
560
561 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
562                                unsigned long arg)
563 {
564         drm_buf_free32_t req32;
565         drm_buf_free_t __user *request;
566         drm_buf_free32_t __user *argp = (void __user *)arg;
567
568         if (copy_from_user(&req32, argp, sizeof(req32)))
569                 return -EFAULT;
570
571         request = compat_alloc_user_space(sizeof(*request));
572         if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
573                 return -EFAULT;
574         if (__put_user(req32.count, &request->count)
575             || __put_user((int __user *)(unsigned long)req32.list,
576                           &request->list))
577                 return -EFAULT;
578
579         return drm_ioctl(file->f_dentry->d_inode, file,
580                          DRM_IOCTL_FREE_BUFS, (unsigned long)request);
581 }
582
583 typedef struct drm_ctx_priv_map32 {
584         unsigned int ctx_id;     /**< Context requesting private mapping */
585         u32 handle;             /**< Handle of map */
586 } drm_ctx_priv_map32_t;
587
588 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
589                                   unsigned long arg)
590 {
591         drm_ctx_priv_map32_t req32;
592         drm_ctx_priv_map_t __user *request;
593         drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
594
595         if (copy_from_user(&req32, argp, sizeof(req32)))
596                 return -EFAULT;
597
598         request = compat_alloc_user_space(sizeof(*request));
599         if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
600                 return -EFAULT;
601         if (__put_user(req32.ctx_id, &request->ctx_id)
602             || __put_user((void *)(unsigned long)req32.handle,
603                           &request->handle))
604                 return -EFAULT;
605
606         return drm_ioctl(file->f_dentry->d_inode, file,
607                          DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
608 }
609
610 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
611                                   unsigned long arg)
612 {
613         drm_ctx_priv_map_t __user *request;
614         drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
615         int err;
616         unsigned int ctx_id;
617         void *handle;
618
619         if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
620             || __get_user(ctx_id, &argp->ctx_id))
621                 return -EFAULT;
622
623         request = compat_alloc_user_space(sizeof(*request));
624         if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
625                 return -EFAULT;
626         if (__put_user(ctx_id, &request->ctx_id))
627                 return -EFAULT;
628
629         err = drm_ioctl(file->f_dentry->d_inode, file,
630                         DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
631         if (err)
632                 return err;
633
634         if (__get_user(handle, &request->handle)
635             || __put_user((unsigned long)handle, &argp->handle))
636                 return -EFAULT;
637
638         return 0;
639 }
640
641 typedef struct drm_ctx_res32 {
642         int count;
643         u32 contexts;
644 } drm_ctx_res32_t;
645
646 static int compat_drm_resctx(struct file *file, unsigned int cmd,
647                              unsigned long arg)
648 {
649         drm_ctx_res32_t __user *argp = (void __user *)arg;
650         drm_ctx_res32_t res32;
651         drm_ctx_res_t __user *res;
652         int err;
653
654         if (copy_from_user(&res32, argp, sizeof(res32)))
655                 return -EFAULT;
656
657         res = compat_alloc_user_space(sizeof(*res));
658         if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
659                 return -EFAULT;
660         if (__put_user(res32.count, &res->count)
661             || __put_user((drm_ctx_t __user *)(unsigned long)res32.contexts,
662                           &res->contexts))
663                 return -EFAULT;
664
665         err = drm_ioctl(file->f_dentry->d_inode, file,
666                         DRM_IOCTL_RES_CTX, (unsigned long)res);
667         if (err)
668                 return err;
669
670         if (__get_user(res32.count, &res->count)
671             || __put_user(res32.count, &argp->count))
672                 return -EFAULT;
673
674         return 0;
675 }
676
677 typedef struct drm_dma32 {
678         int context;              /**< Context handle */
679         int send_count;           /**< Number of buffers to send */
680         u32 send_indices;         /**< List of handles to buffers */
681         u32 send_sizes;           /**< Lengths of data to send */
682         drm_dma_flags_t flags;    /**< Flags */
683         int request_count;        /**< Number of buffers requested */
684         int request_size;         /**< Desired size for buffers */
685         u32 request_indices;      /**< Buffer information */
686         u32 request_sizes;
687         int granted_count;        /**< Number of buffers granted */
688 } drm_dma32_t;
689
690 static int compat_drm_dma(struct file *file, unsigned int cmd,
691                           unsigned long arg)
692 {
693         drm_dma32_t d32;
694         drm_dma32_t __user *argp = (void __user *)arg;
695         drm_dma_t __user *d;
696         int err;
697
698         if (copy_from_user(&d32, argp, sizeof(d32)))
699                 return -EFAULT;
700
701         d = compat_alloc_user_space(sizeof(*d));
702         if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
703                 return -EFAULT;
704
705         if (__put_user(d32.context, &d->context)
706             || __put_user(d32.send_count, &d->send_count)
707             || __put_user((int __user *)(unsigned long)d32.send_indices,
708                           &d->send_indices)
709             || __put_user((int __user *)(unsigned long)d32.send_sizes,
710                           &d->send_sizes)
711             || __put_user(d32.flags, &d->flags)
712             || __put_user(d32.request_count, &d->request_count)
713             || __put_user((int __user *)(unsigned long)d32.request_indices,
714                           &d->request_indices)
715             || __put_user((int __user *)(unsigned long)d32.request_sizes,
716                           &d->request_sizes))
717                 return -EFAULT;
718
719         err = drm_ioctl(file->f_dentry->d_inode, file,
720                         DRM_IOCTL_DMA, (unsigned long)d);
721         if (err)
722                 return err;
723
724         if (__get_user(d32.request_size, &d->request_size)
725             || __get_user(d32.granted_count, &d->granted_count)
726             || __put_user(d32.request_size, &argp->request_size)
727             || __put_user(d32.granted_count, &argp->granted_count))
728                 return -EFAULT;
729
730         return 0;
731 }
732
733 #if __OS_HAS_AGP
734 typedef struct drm_agp_mode32 {
735         u32 mode;       /**< AGP mode */
736 } drm_agp_mode32_t;
737
738 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
739                                  unsigned long arg)
740 {
741         drm_agp_mode32_t __user *argp = (void __user *)arg;
742         drm_agp_mode32_t m32;
743         drm_agp_mode_t __user *mode;
744
745         if (get_user(m32.mode, &argp->mode))
746                 return -EFAULT;
747
748         mode = compat_alloc_user_space(sizeof(*mode));
749         if (put_user(m32.mode, &mode->mode))
750                 return -EFAULT;
751
752         return drm_ioctl(file->f_dentry->d_inode, file,
753                          DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
754 }
755
756 typedef struct drm_agp_info32 {
757         int agp_version_major;
758         int agp_version_minor;
759         u32 mode;
760         u32 aperture_base;      /* physical address */
761         u32 aperture_size;      /* bytes */
762         u32 memory_allowed;     /* bytes */
763         u32 memory_used;
764
765         /* PCI information */
766         unsigned short id_vendor;
767         unsigned short id_device;
768 } drm_agp_info32_t;
769
770 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
771                                unsigned long arg)
772 {
773         drm_agp_info32_t __user *argp = (void __user *)arg;
774         drm_agp_info32_t i32;
775         drm_agp_info_t __user *info;
776         int err;
777
778         info = compat_alloc_user_space(sizeof(*info));
779         if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
780                 return -EFAULT;
781
782         err = drm_ioctl(file->f_dentry->d_inode, file,
783                         DRM_IOCTL_AGP_INFO, (unsigned long)info);
784         if (err)
785                 return err;
786
787         if (__get_user(i32.agp_version_major, &info->agp_version_major)
788             || __get_user(i32.agp_version_minor, &info->agp_version_minor)
789             || __get_user(i32.mode, &info->mode)
790             || __get_user(i32.aperture_base, &info->aperture_base)
791             || __get_user(i32.aperture_size, &info->aperture_size)
792             || __get_user(i32.memory_allowed, &info->memory_allowed)
793             || __get_user(i32.memory_used, &info->memory_used)
794             || __get_user(i32.id_vendor, &info->id_vendor)
795             || __get_user(i32.id_device, &info->id_device))
796                 return -EFAULT;
797
798         if (copy_to_user(argp, &i32, sizeof(i32)))
799                 return -EFAULT;
800
801         return 0;
802 }
803
804 typedef struct drm_agp_buffer32 {
805         u32 size;       /**< In bytes -- will round to page boundary */
806         u32 handle;     /**< Used for binding / unbinding */
807         u32 type;       /**< Type of memory to allocate */
808         u32 physical;   /**< Physical used by i810 */
809 } drm_agp_buffer32_t;
810
811 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
812                                 unsigned long arg)
813 {
814         drm_agp_buffer32_t __user *argp = (void __user *)arg;
815         drm_agp_buffer32_t req32;
816         drm_agp_buffer_t __user *request;
817         int err;
818
819         if (copy_from_user(&req32, argp, sizeof(req32)))
820                 return -EFAULT;
821
822         request = compat_alloc_user_space(sizeof(*request));
823         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
824             || __put_user(req32.size, &request->size)
825             || __put_user(req32.type, &request->type))
826                 return -EFAULT;
827
828         err = drm_ioctl(file->f_dentry->d_inode, file,
829                         DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
830         if (err)
831                 return err;
832
833         if (__get_user(req32.handle, &request->handle)
834             || __get_user(req32.physical, &request->physical)
835             || copy_to_user(argp, &req32, sizeof(req32))) {
836                 drm_ioctl(file->f_dentry->d_inode, file,
837                           DRM_IOCTL_AGP_FREE, (unsigned long)request);
838                 return -EFAULT;
839         }
840
841         return 0;
842 }
843
844 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
845                                unsigned long arg)
846 {
847         drm_agp_buffer32_t __user *argp = (void __user *)arg;
848         drm_agp_buffer_t __user *request;
849         u32 handle;
850
851         request = compat_alloc_user_space(sizeof(*request));
852         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
853             || get_user(handle, &argp->handle)
854             || __put_user(handle, &request->handle))
855                 return -EFAULT;
856
857         return drm_ioctl(file->f_dentry->d_inode, file,
858                          DRM_IOCTL_AGP_FREE, (unsigned long)request);
859 }
860
861 typedef struct drm_agp_binding32 {
862         u32 handle;     /**< From drm_agp_buffer */
863         u32 offset;     /**< In bytes -- will round to page boundary */
864 } drm_agp_binding32_t;
865
866 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
867                                unsigned long arg)
868 {
869         drm_agp_binding32_t __user *argp = (void __user *)arg;
870         drm_agp_binding32_t req32;
871         drm_agp_binding_t __user *request;
872
873         if (copy_from_user(&req32, argp, sizeof(req32)))
874                 return -EFAULT;
875
876         request = compat_alloc_user_space(sizeof(*request));
877         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
878             || __put_user(req32.handle, &request->handle)
879             || __put_user(req32.offset, &request->offset))
880                 return -EFAULT;
881
882         return drm_ioctl(file->f_dentry->d_inode, file,
883                          DRM_IOCTL_AGP_BIND, (unsigned long)request);
884 }
885
886 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
887                                  unsigned long arg)
888 {
889         drm_agp_binding32_t __user *argp = (void __user *)arg;
890         drm_agp_binding_t __user *request;
891         u32 handle;
892
893         request = compat_alloc_user_space(sizeof(*request));
894         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
895             || get_user(handle, &argp->handle)
896             || __put_user(handle, &request->handle))
897                 return -EFAULT;
898
899         return drm_ioctl(file->f_dentry->d_inode, file,
900                          DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
901 }
902 #endif                          /* __OS_HAS_AGP */
903
904 typedef struct drm_scatter_gather32 {
905         u32 size;       /**< In bytes -- will round to page boundary */
906         u32 handle;     /**< Used for mapping / unmapping */
907 } drm_scatter_gather32_t;
908
909 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
910                                unsigned long arg)
911 {
912         drm_scatter_gather32_t __user *argp = (void __user *)arg;
913         drm_scatter_gather_t __user *request;
914         int err;
915         unsigned long x;
916
917         request = compat_alloc_user_space(sizeof(*request));
918         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
919             || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
920             || __get_user(x, &argp->size)
921             || __put_user(x, &request->size))
922                 return -EFAULT;
923
924         err = drm_ioctl(file->f_dentry->d_inode, file,
925                         DRM_IOCTL_SG_ALLOC, (unsigned long)request);
926         if (err)
927                 return err;
928
929         /* XXX not sure about the handle conversion here... */
930         if (__get_user(x, &request->handle)
931             || __put_user(x >> PAGE_SHIFT, &argp->handle))
932                 return -EFAULT;
933
934         return 0;
935 }
936
937 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
938                               unsigned long arg)
939 {
940         drm_scatter_gather32_t __user *argp = (void __user *)arg;
941         drm_scatter_gather_t __user *request;
942         unsigned long x;
943
944         request = compat_alloc_user_space(sizeof(*request));
945         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
946             || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
947             || __get_user(x, &argp->handle)
948             || __put_user(x << PAGE_SHIFT, &request->handle))
949                 return -EFAULT;
950
951         return drm_ioctl(file->f_dentry->d_inode, file,
952                          DRM_IOCTL_SG_FREE, (unsigned long)request);
953 }
954
955 struct drm_wait_vblank_request32 {
956         drm_vblank_seq_type_t type;
957         unsigned int sequence;
958         u32 signal;
959 };
960
961 struct drm_wait_vblank_reply32 {
962         drm_vblank_seq_type_t type;
963         unsigned int sequence;
964         s32 tval_sec;
965         s32 tval_usec;
966 };
967
968 typedef union drm_wait_vblank32 {
969         struct drm_wait_vblank_request32 request;
970         struct drm_wait_vblank_reply32 reply;
971 } drm_wait_vblank32_t;
972
973 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
974                                   unsigned long arg)
975 {
976         drm_wait_vblank32_t __user *argp = (void __user *)arg;
977         drm_wait_vblank32_t req32;
978         drm_wait_vblank_t __user *request;
979         int err;
980
981         if (copy_from_user(&req32, argp, sizeof(req32)))
982                 return -EFAULT;
983
984         request = compat_alloc_user_space(sizeof(*request));
985         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
986             || __put_user(req32.request.type, &request->request.type)
987             || __put_user(req32.request.sequence, &request->request.sequence)
988             || __put_user(req32.request.signal, &request->request.signal))
989                 return -EFAULT;
990
991         err = drm_ioctl(file->f_dentry->d_inode, file,
992                         DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
993         if (err)
994                 return err;
995
996         if (__get_user(req32.reply.type, &request->reply.type)
997             || __get_user(req32.reply.sequence, &request->reply.sequence)
998             || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
999             || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1000                 return -EFAULT;
1001
1002         if (copy_to_user(argp, &req32, sizeof(req32)))
1003                 return -EFAULT;
1004
1005         return 0;
1006 }
1007
1008 drm_ioctl_compat_t *drm_compat_ioctls[] = {
1009         [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1010         [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1011         [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1012         [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1013         [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1014         [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1015         [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1016         [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1017         [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1018         [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1019         [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1020         [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1021         [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1022         [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1023         [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1024         [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1025         [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1026 #if __OS_HAS_AGP
1027         [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1028         [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1029         [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1030         [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1031         [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1032         [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1033 #endif
1034         [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1035         [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1036         [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1037 };
1038
1039 /**
1040  * Called whenever a 32-bit process running under a 64-bit kernel
1041  * performs an ioctl on /dev/drm.
1042  *
1043  * \param filp file pointer.
1044  * \param cmd command.
1045  * \param arg user argument.
1046  * \return zero on success or negative number on failure.
1047  */
1048 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1049 {
1050         unsigned int nr = DRM_IOCTL_NR(cmd);
1051         drm_ioctl_compat_t *fn;
1052         int ret;
1053
1054         if (nr >= DRM_ARRAY_SIZE(drm_compat_ioctls))
1055                 return -ENOTTY;
1056
1057         fn = drm_compat_ioctls[nr];
1058
1059         lock_kernel();          /* XXX for now */
1060         if (fn != NULL)
1061                 ret = (*fn)(filp, cmd, arg);
1062         else
1063                 ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
1064         unlock_kernel();
1065
1066         return ret;
1067 }
1068 EXPORT_SYMBOL(drm_compat_ioctl);