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Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
[deliverable/linux.git] / drivers / gpu / drm / drm_ioc32.c
CommitLineData
9a186645
DA		 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>
cafe8d84 31#include <linux/ratelimit.h>
2d1a8a48 32#include <linux/export.h>
9a186645 33
760285e7
DH		 34#include <drm/drmP.h>
35#include <drm/drm_core.h>
9a186645
DA		 36
37#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
38#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
39#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
40#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
41#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
42
43#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
44#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
45#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
46#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
47#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
48#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
49#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
50
51#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
52
53#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
54#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
55
56#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
57#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
58
59#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
60#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
61#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
62#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
63#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
64#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
65
66#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
67#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
68
49568873
EA		 69#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
70
9a186645
DA		 71#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
72
c631d5f9
TU		 73#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
74
9a186645 75typedef struct drm_version_32 {
b5e89ed5
DA		 76 int version_major; /**< Major version */
77 int version_minor; /**< Minor version */
78 int version_patchlevel; /**< Patch level */
79 u32 name_len; /**< Length of name buffer */
80 u32 name; /**< Name of driver */
81 u32 date_len; /**< Length of date buffer */
82 u32 date; /**< User-space buffer to hold date */
83 u32 desc_len; /**< Length of desc buffer */
84 u32 desc; /**< User-space buffer to hold desc */
9a186645
DA		 85} drm_version32_t;
86
87static int compat_drm_version(struct file *file, unsigned int cmd,
88 unsigned long arg)
89{
90 drm_version32_t v32;
ff4135ae 91 struct drm_version __user *version;
9a186645
DA		 92 int err;
93
b5e89ed5 94 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
9a186645
DA		 95 return -EFAULT;
96
97 version = compat_alloc_user_space(sizeof(*version));
1f96beec 98 if (!version)
9a186645
DA		 99 return -EFAULT;
100 if (__put_user(v32.name_len, &version->name_len)
101 || __put_user((void __user *)(unsigned long)v32.name,
102 &version->name)
103 || __put_user(v32.date_len, &version->date_len)
104 || __put_user((void __user *)(unsigned long)v32.date,
105 &version->date)
106 || __put_user(v32.desc_len, &version->desc_len)
107 || __put_user((void __user *)(unsigned long)v32.desc,
108 &version->desc))
109 return -EFAULT;
110
ed8b6704 111 err = drm_ioctl(file,
b5e89ed5 112 DRM_IOCTL_VERSION, (unsigned long)version);
9a186645
DA		 113 if (err)
114 return err;
115
116 if (__get_user(v32.version_major, &version->version_major)
117 || __get_user(v32.version_minor, &version->version_minor)
118 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
119 || __get_user(v32.name_len, &version->name_len)
120 || __get_user(v32.date_len, &version->date_len)
121 || __get_user(v32.desc_len, &version->desc_len))
122 return -EFAULT;
123
b5e89ed5 124 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
9a186645
DA		 125 return -EFAULT;
126 return 0;
127}
128
129typedef struct drm_unique32 {
130 u32 unique_len; /**< Length of unique */
131 u32 unique; /**< Unique name for driver instantiation */
132} drm_unique32_t;
133
134static int compat_drm_getunique(struct file *file, unsigned int cmd,
135 unsigned long arg)
136{
137 drm_unique32_t uq32;
ff4135ae 138 struct drm_unique __user *u;
9a186645
DA		 139 int err;
140
b5e89ed5 141 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 142 return -EFAULT;
143
144 u = compat_alloc_user_space(sizeof(*u));
1f96beec 145 if (!u)
9a186645
DA		 146 return -EFAULT;
147 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 148 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 149 &u->unique))
150 return -EFAULT;
151
ed8b6704 152 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
9a186645
DA		 153 if (err)
154 return err;
155
156 if (__get_user(uq32.unique_len, &u->unique_len))
157 return -EFAULT;
b5e89ed5 158 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
9a186645
DA		 159 return -EFAULT;
160 return 0;
161}
162
163static int compat_drm_setunique(struct file *file, unsigned int cmd,
164 unsigned long arg)
165{
166 drm_unique32_t uq32;
ff4135ae 167 struct drm_unique __user *u;
9a186645 168
b5e89ed5 169 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 170 return -EFAULT;
171
172 u = compat_alloc_user_space(sizeof(*u));
1f96beec 173 if (!u)
9a186645
DA		 174 return -EFAULT;
175 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 176 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 177 &u->unique))
178 return -EFAULT;
179
ed8b6704 180 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
9a186645
DA		 181}
182
183typedef struct drm_map32 {
b5e89ed5
DA		 184 u32 offset; /**< Requested physical address (0 for SAREA)*/
185 u32 size; /**< Requested physical size (bytes) */
ff4135ae
DA		 186 enum drm_map_type type; /**< Type of memory to map */
187 enum drm_map_flags flags; /**< Flags */
b5e89ed5
DA		 188 u32 handle; /**< User-space: "Handle" to pass to mmap() */
189 int mtrr; /**< MTRR slot used */
9a186645
DA		 190} drm_map32_t;
191
192static int compat_drm_getmap(struct file *file, unsigned int cmd,
193 unsigned long arg)
194{
195 drm_map32_t __user *argp = (void __user *)arg;
196 drm_map32_t m32;
ff4135ae 197 struct drm_map __user *map;
9a186645
DA		 198 int idx, err;
199 void *handle;
200
201 if (get_user(idx, &argp->offset))
202 return -EFAULT;
203
204 map = compat_alloc_user_space(sizeof(*map));
1f96beec 205 if (!map)
9a186645
DA		 206 return -EFAULT;
207 if (__put_user(idx, &map->offset))
208 return -EFAULT;
209
ed8b6704 210 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map);
9a186645
DA		 211 if (err)
212 return err;
213
214 if (__get_user(m32.offset, &map->offset)
215 || __get_user(m32.size, &map->size)
216 || __get_user(m32.type, &map->type)
217 || __get_user(m32.flags, &map->flags)
218 || __get_user(handle, &map->handle)
219 || __get_user(m32.mtrr, &map->mtrr))
220 return -EFAULT;
221
b5e89ed5 222 m32.handle = (unsigned long)handle;
9a186645
DA		 223 if (copy_to_user(argp, &m32, sizeof(m32)))
224 return -EFAULT;
225 return 0;
226
227}
228
229static int compat_drm_addmap(struct file *file, unsigned int cmd,
230 unsigned long arg)
231{
232 drm_map32_t __user *argp = (void __user *)arg;
233 drm_map32_t m32;
ff4135ae 234 struct drm_map __user *map;
9a186645
DA		 235 int err;
236 void *handle;
237
238 if (copy_from_user(&m32, argp, sizeof(m32)))
239 return -EFAULT;
240
241 map = compat_alloc_user_space(sizeof(*map));
1f96beec 242 if (!map)
9a186645
DA		 243 return -EFAULT;
244 if (__put_user(m32.offset, &map->offset)
245 || __put_user(m32.size, &map->size)
246 || __put_user(m32.type, &map->type)
247 || __put_user(m32.flags, &map->flags))
248 return -EFAULT;
249
ed8b6704 250 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
9a186645
DA		 251 if (err)
252 return err;
253
254 if (__get_user(m32.offset, &map->offset)
255 || __get_user(m32.mtrr, &map->mtrr)
256 || __get_user(handle, &map->handle))
257 return -EFAULT;
258
b5e89ed5 259 m32.handle = (unsigned long)handle;
cafe8d84
CD		 260 if (m32.handle != (unsigned long)handle)
261 printk_ratelimited(KERN_ERR "compat_drm_addmap truncated handle"
262 " %p for type %d offset %x\n",
263 handle, m32.type, m32.offset);
9a186645
DA		 264
265 if (copy_to_user(argp, &m32, sizeof(m32)))
266 return -EFAULT;
267
268 return 0;
269}
270
271static int compat_drm_rmmap(struct file *file, unsigned int cmd,
272 unsigned long arg)
273{
274 drm_map32_t __user *argp = (void __user *)arg;
ff4135ae 275 struct drm_map __user *map;
9a186645
DA		 276 u32 handle;
277
278 if (get_user(handle, &argp->handle))
279 return -EFAULT;
280
281 map = compat_alloc_user_space(sizeof(*map));
1f96beec 282 if (!map)
9a186645 283 return -EFAULT;
b5e89ed5 284 if (__put_user((void *)(unsigned long)handle, &map->handle))
9a186645
DA		 285 return -EFAULT;
286
ed8b6704 287 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
9a186645
DA		 288}
289
290typedef struct drm_client32 {
b5e89ed5
DA		 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 */
9a186645
DA		 297} drm_client32_t;
298
299static 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;
ff4135ae 304 struct drm_client __user *client;
9a186645
DA		 305 int idx, err;
306
307 if (get_user(idx, &argp->idx))
308 return -EFAULT;
309
310 client = compat_alloc_user_space(sizeof(*client));
1f96beec 311 if (!client)
9a186645
DA		 312 return -EFAULT;
313 if (__put_user(idx, &client->idx))
314 return -EFAULT;
315
ed8b6704 316 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
9a186645
DA		 317 if (err)
318 return err;
319
08bc3d4e
JL		 320 if (__get_user(c32.idx, &client->idx)
321 || __get_user(c32.auth, &client->auth)
9a186645
DA		 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
333typedef struct drm_stats32 {
334 u32 count;
335 struct {
336 u32 value;
ff4135ae 337 enum drm_stat_type type;
9a186645
DA		 338 } data[15];
339} drm_stats32_t;
340
341static 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;
ff4135ae 346 struct drm_stats __user *stats;
9a186645
DA		 347 int i, err;
348
349 stats = compat_alloc_user_space(sizeof(*stats));
1f96beec 350 if (!stats)
9a186645
DA		 351 return -EFAULT;
352
ed8b6704 353 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
9a186645
DA		 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
369typedef struct drm_buf_desc32 {
b5e89ed5
DA		 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 */
9a186645
DA		 376} drm_buf_desc32_t;
377
378static 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;
ff4135ae 382 struct drm_buf_desc __user *buf;
9a186645
DA		 383 int err;
384 unsigned long agp_start;
385
386 buf = compat_alloc_user_space(sizeof(*buf));
1f96beec 387 if (!buf || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
9a186645
DA		 388 return -EFAULT;
389
390 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
391 || __get_user(agp_start, &argp->agp_start)
392 || __put_user(agp_start, &buf->agp_start))
393 return -EFAULT;
394
ed8b6704 395 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
9a186645
DA		 396 if (err)
397 return err;
398
399 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
400 || __get_user(agp_start, &buf->agp_start)
401 || __put_user(agp_start, &argp->agp_start))
402 return -EFAULT;
403
404 return 0;
405}
406
407static int compat_drm_markbufs(struct file *file, unsigned int cmd,
408 unsigned long arg)
409{
410 drm_buf_desc32_t b32;
411 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff4135ae 412 struct drm_buf_desc __user *buf;
9a186645
DA		 413
414 if (copy_from_user(&b32, argp, sizeof(b32)))
415 return -EFAULT;
416
417 buf = compat_alloc_user_space(sizeof(*buf));
1f96beec 418 if (!buf)
9a186645
DA		 419 return -EFAULT;
420
421 if (__put_user(b32.size, &buf->size)
422 || __put_user(b32.low_mark, &buf->low_mark)
423 || __put_user(b32.high_mark, &buf->high_mark))
424 return -EFAULT;
425
ed8b6704 426 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
9a186645
DA		 427}
428
429typedef struct drm_buf_info32 {
b5e89ed5
DA		 430 int count; /**< Entries in list */
431 u32 list;
9a186645
DA		 432} drm_buf_info32_t;
433
434static int compat_drm_infobufs(struct file *file, unsigned int cmd,
435 unsigned long arg)
436{
437 drm_buf_info32_t req32;
438 drm_buf_info32_t __user *argp = (void __user *)arg;
439 drm_buf_desc32_t __user *to;
ff4135ae
DA		 440 struct drm_buf_info __user *request;
441 struct drm_buf_desc __user *list;
9a186645
DA		 442 size_t nbytes;
443 int i, err;
444 int count, actual;
445
446 if (copy_from_user(&req32, argp, sizeof(req32)))
447 return -EFAULT;
448
449 count = req32.count;
b5e89ed5 450 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
9a186645
DA		 451 if (count < 0)
452 count = 0;
453 if (count > 0
454 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
455 return -EFAULT;
456
ff4135ae 457 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
9a186645 458 request = compat_alloc_user_space(nbytes);
1f96beec 459 if (!request)
9a186645 460 return -EFAULT;
ff4135ae 461 list = (struct drm_buf_desc *) (request + 1);
9a186645
DA		 462
463 if (__put_user(count, &request->count)
464 || __put_user(list, &request->list))
465 return -EFAULT;
466
ed8b6704 467 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
9a186645
DA		 468 if (err)
469 return err;
470
471 if (__get_user(actual, &request->count))
472 return -EFAULT;
473 if (count >= actual)
474 for (i = 0; i < actual; ++i)
475 if (__copy_in_user(&to[i], &list[i],
ff4135ae 476 offsetof(struct drm_buf_desc, flags)))
9a186645
DA		 477 return -EFAULT;
478
479 if (__put_user(actual, &argp->count))
480 return -EFAULT;
481
482 return 0;
483}
484
485typedef struct drm_buf_pub32 {
b5e89ed5
DA		 486 int idx; /**< Index into the master buffer list */
487 int total; /**< Buffer size */
488 int used; /**< Amount of buffer in use (for DMA) */
489 u32 address; /**< Address of buffer */
9a186645
DA		 490} drm_buf_pub32_t;
491
492typedef struct drm_buf_map32 {
b5e89ed5
DA		 493 int count; /**< Length of the buffer list */
494 u32 virtual; /**< Mmap'd area in user-virtual */
495 u32 list; /**< Buffer information */
9a186645
DA		 496} drm_buf_map32_t;
497
498static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
499 unsigned long arg)
500{
501 drm_buf_map32_t __user *argp = (void __user *)arg;
502 drm_buf_map32_t req32;
503 drm_buf_pub32_t __user *list32;
ff4135ae
DA		 504 struct drm_buf_map __user *request;
505 struct drm_buf_pub __user *list;
9a186645
DA		 506 int i, err;
507 int count, actual;
508 size_t nbytes;
509 void __user *addr;
510
511 if (copy_from_user(&req32, argp, sizeof(req32)))
512 return -EFAULT;
513 count = req32.count;
514 list32 = (void __user *)(unsigned long)req32.list;
515
516 if (count < 0)
517 return -EINVAL;
ff4135ae 518 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
9a186645 519 request = compat_alloc_user_space(nbytes);
1f96beec 520 if (!request)
9a186645 521 return -EFAULT;
ff4135ae 522 list = (struct drm_buf_pub *) (request + 1);
9a186645
DA		 523
524 if (__put_user(count, &request->count)
525 || __put_user(list, &request->list))
526 return -EFAULT;
527
ed8b6704 528 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
9a186645
DA		 529 if (err)
530 return err;
531
532 if (__get_user(actual, &request->count))
533 return -EFAULT;
534 if (count >= actual)
535 for (i = 0; i < actual; ++i)
536 if (__copy_in_user(&list32[i], &list[i],
ff4135ae 537 offsetof(struct drm_buf_pub, address))
9a186645 538 || __get_user(addr, &list[i].address)
b5e89ed5 539 || __put_user((unsigned long)addr,
9a186645
DA		 540 &list32[i].address))
541 return -EFAULT;
542
543 if (__put_user(actual, &argp->count)
544 || __get_user(addr, &request->virtual)
b5e89ed5 545 || __put_user((unsigned long)addr, &argp->virtual))
9a186645
DA		 546 return -EFAULT;
547
548 return 0;
549}
550
551typedef struct drm_buf_free32 {
b5e89ed5
DA		 552 int count;
553 u32 list;
9a186645
DA		 554} drm_buf_free32_t;
555
556static int compat_drm_freebufs(struct file *file, unsigned int cmd,
557 unsigned long arg)
558{
559 drm_buf_free32_t req32;
ff4135ae 560 struct drm_buf_free __user *request;
9a186645
DA		 561 drm_buf_free32_t __user *argp = (void __user *)arg;
562
563 if (copy_from_user(&req32, argp, sizeof(req32)))
564 return -EFAULT;
565
566 request = compat_alloc_user_space(sizeof(*request));
1f96beec 567 if (!request)
9a186645
DA		 568 return -EFAULT;
569 if (__put_user(req32.count, &request->count)
b5e89ed5 570 || __put_user((int __user *)(unsigned long)req32.list,
9a186645
DA		 571 &request->list))
572 return -EFAULT;
573
ed8b6704 574 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
9a186645
DA		 575}
576
577typedef struct drm_ctx_priv_map32 {
b5e89ed5
DA		 578 unsigned int ctx_id; /**< Context requesting private mapping */
579 u32 handle; /**< Handle of map */
9a186645
DA		 580} drm_ctx_priv_map32_t;
581
582static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
583 unsigned long arg)
584{
585 drm_ctx_priv_map32_t req32;
ff4135ae 586 struct drm_ctx_priv_map __user *request;
9a186645
DA		 587 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
588
589 if (copy_from_user(&req32, argp, sizeof(req32)))
590 return -EFAULT;
591
592 request = compat_alloc_user_space(sizeof(*request));
1f96beec 593 if (!request)
9a186645
DA		 594 return -EFAULT;
595 if (__put_user(req32.ctx_id, &request->ctx_id)
b5e89ed5 596 || __put_user((void *)(unsigned long)req32.handle,
9a186645
DA		 597 &request->handle))
598 return -EFAULT;
599
ed8b6704 600 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 601}
602
603static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
604 unsigned long arg)
605{
ff4135ae 606 struct drm_ctx_priv_map __user *request;
9a186645
DA		 607 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
608 int err;
609 unsigned int ctx_id;
610 void *handle;
611
612 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
613 || __get_user(ctx_id, &argp->ctx_id))
614 return -EFAULT;
615
616 request = compat_alloc_user_space(sizeof(*request));
1f96beec 617 if (!request)
9a186645
DA		 618 return -EFAULT;
619 if (__put_user(ctx_id, &request->ctx_id))
620 return -EFAULT;
621
ed8b6704 622 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 623 if (err)
624 return err;
625
626 if (__get_user(handle, &request->handle)
b5e89ed5 627 || __put_user((unsigned long)handle, &argp->handle))
9a186645
DA		 628 return -EFAULT;
629
630 return 0;
631}
632
633typedef struct drm_ctx_res32 {
b5e89ed5
DA		 634 int count;
635 u32 contexts;
9a186645
DA		 636} drm_ctx_res32_t;
637
638static int compat_drm_resctx(struct file *file, unsigned int cmd,
639 unsigned long arg)
640{
641 drm_ctx_res32_t __user *argp = (void __user *)arg;
642 drm_ctx_res32_t res32;
ff4135ae 643 struct drm_ctx_res __user *res;
9a186645
DA		 644 int err;
645
646 if (copy_from_user(&res32, argp, sizeof(res32)))
647 return -EFAULT;
648
649 res = compat_alloc_user_space(sizeof(*res));
1f96beec 650 if (!res)
9a186645
DA		 651 return -EFAULT;
652 if (__put_user(res32.count, &res->count)
ff4135ae 653 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
9a186645
DA		 654 &res->contexts))
655 return -EFAULT;
656
ed8b6704 657 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
9a186645
DA		 658 if (err)
659 return err;
660
661 if (__get_user(res32.count, &res->count)
662 || __put_user(res32.count, &argp->count))
663 return -EFAULT;
664
665 return 0;
666}
667
668typedef struct drm_dma32 {
b5e89ed5
DA		 669 int context; /**< Context handle */
670 int send_count; /**< Number of buffers to send */
671 u32 send_indices; /**< List of handles to buffers */
672 u32 send_sizes; /**< Lengths of data to send */
ff4135ae 673 enum drm_dma_flags flags; /**< Flags */
b5e89ed5
DA		 674 int request_count; /**< Number of buffers requested */
675 int request_size; /**< Desired size for buffers */
676 u32 request_indices; /**< Buffer information */
677 u32 request_sizes;
678 int granted_count; /**< Number of buffers granted */
9a186645
DA		 679} drm_dma32_t;
680
681static int compat_drm_dma(struct file *file, unsigned int cmd,
682 unsigned long arg)
683{
684 drm_dma32_t d32;
b5e89ed5 685 drm_dma32_t __user *argp = (void __user *)arg;
ff4135ae 686 struct drm_dma __user *d;
9a186645
DA		 687 int err;
688
689 if (copy_from_user(&d32, argp, sizeof(d32)))
690 return -EFAULT;
691
692 d = compat_alloc_user_space(sizeof(*d));
1f96beec 693 if (!d)
9a186645
DA		 694 return -EFAULT;
695
696 if (__put_user(d32.context, &d->context)
697 || __put_user(d32.send_count, &d->send_count)
b5e89ed5 698 || __put_user((int __user *)(unsigned long)d32.send_indices,
9a186645 699 &d->send_indices)
b5e89ed5 700 || __put_user((int __user *)(unsigned long)d32.send_sizes,
9a186645
DA		 701 &d->send_sizes)
702 || __put_user(d32.flags, &d->flags)
703 || __put_user(d32.request_count, &d->request_count)
b5e89ed5 704 || __put_user((int __user *)(unsigned long)d32.request_indices,
9a186645 705 &d->request_indices)
b5e89ed5 706 || __put_user((int __user *)(unsigned long)d32.request_sizes,
9a186645
DA		 707 &d->request_sizes))
708 return -EFAULT;
709
ed8b6704 710 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
9a186645
DA		 711 if (err)
712 return err;
713
714 if (__get_user(d32.request_size, &d->request_size)
715 || __get_user(d32.granted_count, &d->granted_count)
716 || __put_user(d32.request_size, &argp->request_size)
717 || __put_user(d32.granted_count, &argp->granted_count))
718 return -EFAULT;
719
720 return 0;
721}
722
a7fb8a23 723#if IS_ENABLED(CONFIG_AGP)
9a186645
DA		 724typedef struct drm_agp_mode32 {
725 u32 mode; /**< AGP mode */
726} drm_agp_mode32_t;
727
728static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
729 unsigned long arg)
730{
731 drm_agp_mode32_t __user *argp = (void __user *)arg;
732 drm_agp_mode32_t m32;
ff4135ae 733 struct drm_agp_mode __user *mode;
9a186645
DA		 734
735 if (get_user(m32.mode, &argp->mode))
736 return -EFAULT;
737
738 mode = compat_alloc_user_space(sizeof(*mode));
739 if (put_user(m32.mode, &mode->mode))
740 return -EFAULT;
741
ed8b6704 742 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
9a186645
DA		 743}
744
745typedef struct drm_agp_info32 {
b5e89ed5
DA		 746 int agp_version_major;
747 int agp_version_minor;
748 u32 mode;
749 u32 aperture_base; /* physical address */
750 u32 aperture_size; /* bytes */
751 u32 memory_allowed; /* bytes */
752 u32 memory_used;
753
754 /* PCI information */
9a186645
DA		 755 unsigned short id_vendor;
756 unsigned short id_device;
757} drm_agp_info32_t;
758
759static int compat_drm_agp_info(struct file *file, unsigned int cmd,
760 unsigned long arg)
761{
762 drm_agp_info32_t __user *argp = (void __user *)arg;
763 drm_agp_info32_t i32;
ff4135ae 764 struct drm_agp_info __user *info;
9a186645
DA		 765 int err;
766
767 info = compat_alloc_user_space(sizeof(*info));
1f96beec 768 if (!info)
9a186645
DA		 769 return -EFAULT;
770
ed8b6704 771 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
9a186645
DA		 772 if (err)
773 return err;
774
775 if (__get_user(i32.agp_version_major, &info->agp_version_major)
776 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
777 || __get_user(i32.mode, &info->mode)
778 || __get_user(i32.aperture_base, &info->aperture_base)
779 || __get_user(i32.aperture_size, &info->aperture_size)
780 || __get_user(i32.memory_allowed, &info->memory_allowed)
781 || __get_user(i32.memory_used, &info->memory_used)
782 || __get_user(i32.id_vendor, &info->id_vendor)
783 || __get_user(i32.id_device, &info->id_device))
784 return -EFAULT;
785
786 if (copy_to_user(argp, &i32, sizeof(i32)))
787 return -EFAULT;
788
789 return 0;
790}
791
792typedef struct drm_agp_buffer32 {
793 u32 size; /**< In bytes -- will round to page boundary */
794 u32 handle; /**< Used for binding / unbinding */
795 u32 type; /**< Type of memory to allocate */
b5e89ed5 796 u32 physical; /**< Physical used by i810 */
9a186645
DA		 797} drm_agp_buffer32_t;
798
799static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
800 unsigned long arg)
801{
802 drm_agp_buffer32_t __user *argp = (void __user *)arg;
803 drm_agp_buffer32_t req32;
ff4135ae 804 struct drm_agp_buffer __user *request;
9a186645
DA		 805 int err;
806
807 if (copy_from_user(&req32, argp, sizeof(req32)))
808 return -EFAULT;
809
810 request = compat_alloc_user_space(sizeof(*request));
1f96beec 811 if (!request
9a186645
DA		 812 || __put_user(req32.size, &request->size)
813 || __put_user(req32.type, &request->type))
814 return -EFAULT;
815
ed8b6704 816 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
9a186645
DA		 817 if (err)
818 return err;
819
820 if (__get_user(req32.handle, &request->handle)
821 || __get_user(req32.physical, &request->physical)
822 || copy_to_user(argp, &req32, sizeof(req32))) {
ed8b6704 823 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 824 return -EFAULT;
825 }
826
827 return 0;
828}
829
830static int compat_drm_agp_free(struct file *file, unsigned int cmd,
831 unsigned long arg)
832{
833 drm_agp_buffer32_t __user *argp = (void __user *)arg;
ff4135ae 834 struct drm_agp_buffer __user *request;
9a186645
DA		 835 u32 handle;
836
837 request = compat_alloc_user_space(sizeof(*request));
1f96beec 838 if (!request
9a186645
DA		 839 || get_user(handle, &argp->handle)
840 || __put_user(handle, &request->handle))
841 return -EFAULT;
842
ed8b6704 843 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 844}
845
846typedef struct drm_agp_binding32 {
847 u32 handle; /**< From drm_agp_buffer */
848 u32 offset; /**< In bytes -- will round to page boundary */
849} drm_agp_binding32_t;
850
851static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
852 unsigned long arg)
853{
854 drm_agp_binding32_t __user *argp = (void __user *)arg;
855 drm_agp_binding32_t req32;
ff4135ae 856 struct drm_agp_binding __user *request;
9a186645
DA		 857
858 if (copy_from_user(&req32, argp, sizeof(req32)))
859 return -EFAULT;
860
861 request = compat_alloc_user_space(sizeof(*request));
1f96beec 862 if (!request
9a186645
DA		 863 || __put_user(req32.handle, &request->handle)
864 || __put_user(req32.offset, &request->offset))
865 return -EFAULT;
866
ed8b6704 867 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
9a186645
DA		 868}
869
870static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
871 unsigned long arg)
872{
873 drm_agp_binding32_t __user *argp = (void __user *)arg;
ff4135ae 874 struct drm_agp_binding __user *request;
9a186645
DA		 875 u32 handle;
876
877 request = compat_alloc_user_space(sizeof(*request));
1f96beec 878 if (!request
9a186645
DA		 879 || get_user(handle, &argp->handle)
880 || __put_user(handle, &request->handle))
881 return -EFAULT;
882
ed8b6704 883 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
9a186645 884}
a7fb8a23 885#endif /* CONFIG_AGP */
9a186645
DA		 886
887typedef struct drm_scatter_gather32 {
888 u32 size; /**< In bytes -- will round to page boundary */
889 u32 handle; /**< Used for mapping / unmapping */
890} drm_scatter_gather32_t;
891
892static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
893 unsigned long arg)
894{
895 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 896 struct drm_scatter_gather __user *request;
9a186645
DA		 897 int err;
898 unsigned long x;
899
900 request = compat_alloc_user_space(sizeof(*request));
1f96beec 901 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
9a186645
DA		 902 || __get_user(x, &argp->size)
903 || __put_user(x, &request->size))
904 return -EFAULT;
905
ed8b6704 906 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
9a186645
DA		 907 if (err)
908 return err;
909
910 /* XXX not sure about the handle conversion here... */
911 if (__get_user(x, &request->handle)
912 || __put_user(x >> PAGE_SHIFT, &argp->handle))
913 return -EFAULT;
914
915 return 0;
916}
917
918static int compat_drm_sg_free(struct file *file, unsigned int cmd,
919 unsigned long arg)
920{
921 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 922 struct drm_scatter_gather __user *request;
9a186645
DA		 923 unsigned long x;
924
925 request = compat_alloc_user_space(sizeof(*request));
1f96beec 926 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
9a186645
DA		 927 || __get_user(x, &argp->handle)
928 || __put_user(x << PAGE_SHIFT, &request->handle))
929 return -EFAULT;
930
ed8b6704 931 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
9a186645
DA		 932}
933
09e40d65 934#if defined(CONFIG_X86) || defined(CONFIG_IA64)
49568873
EA		 935typedef struct drm_update_draw32 {
936 drm_drawable_t handle;
937 unsigned int type;
938 unsigned int num;
939 /* 64-bit version has a 32-bit pad here */
940 u64 data; /**< Pointer */
941} __attribute__((packed)) drm_update_draw32_t;
942
943static int compat_drm_update_draw(struct file *file, unsigned int cmd,
944 unsigned long arg)
945{
946 drm_update_draw32_t update32;
947 struct drm_update_draw __user *request;
948 int err;
949
950 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
951 return -EFAULT;
952
953 request = compat_alloc_user_space(sizeof(*request));
1f96beec 954 if (!request ||
49568873
EA		 955 __put_user(update32.handle, &request->handle) ||
956 __put_user(update32.type, &request->type) ||
957 __put_user(update32.num, &request->num) ||
958 __put_user(update32.data, &request->data))
959 return -EFAULT;
960
ed8b6704 961 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
49568873
EA		 962 return err;
963}
09e40d65 964#endif
49568873 965
9a186645 966struct drm_wait_vblank_request32 {
ff4135ae 967 enum drm_vblank_seq_type type;
9a186645
DA		 968 unsigned int sequence;
969 u32 signal;
970};
971
972struct drm_wait_vblank_reply32 {
ff4135ae 973 enum drm_vblank_seq_type type;
9a186645
DA		 974 unsigned int sequence;
975 s32 tval_sec;
976 s32 tval_usec;
977};
978
979typedef union drm_wait_vblank32 {
980 struct drm_wait_vblank_request32 request;
981 struct drm_wait_vblank_reply32 reply;
982} drm_wait_vblank32_t;
983
984static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
985 unsigned long arg)
986{
987 drm_wait_vblank32_t __user *argp = (void __user *)arg;
988 drm_wait_vblank32_t req32;
ff4135ae 989 union drm_wait_vblank __user *request;
9a186645
DA		 990 int err;
991
992 if (copy_from_user(&req32, argp, sizeof(req32)))
993 return -EFAULT;
994
995 request = compat_alloc_user_space(sizeof(*request));
1f96beec 996 if (!request
9a186645
DA		 997 || __put_user(req32.request.type, &request->request.type)
998 || __put_user(req32.request.sequence, &request->request.sequence)
999 || __put_user(req32.request.signal, &request->request.signal))
1000 return -EFAULT;
1001
ed8b6704 1002 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
9a186645
DA		 1003 if (err)
1004 return err;
1005
1006 if (__get_user(req32.reply.type, &request->reply.type)
1007 || __get_user(req32.reply.sequence, &request->reply.sequence)
1008 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1009 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1010 return -EFAULT;
1011
1012 if (copy_to_user(argp, &req32, sizeof(req32)))
1013 return -EFAULT;
1014
1015 return 0;
1016}
1017
47a66e45 1018#if defined(CONFIG_X86) || defined(CONFIG_IA64)
c631d5f9
TU		 1019typedef struct drm_mode_fb_cmd232 {
1020 u32 fb_id;
1021 u32 width;
1022 u32 height;
1023 u32 pixel_format;
1024 u32 flags;
1025 u32 handles[4];
1026 u32 pitches[4];
1027 u32 offsets[4];
1028 u64 modifier[4];
1029} __attribute__((packed)) drm_mode_fb_cmd232_t;
1030
1031static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
1032 unsigned long arg)
1033{
1034 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
1035 struct drm_mode_fb_cmd232 req32;
1036 struct drm_mode_fb_cmd2 __user *req64;
1037 int i;
1038 int err;
1039
1040 if (copy_from_user(&req32, argp, sizeof(req32)))
1041 return -EFAULT;
1042
1043 req64 = compat_alloc_user_space(sizeof(*req64));
1044
1045 if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
1046 || __put_user(req32.width, &req64->width)
1047 || __put_user(req32.height, &req64->height)
1048 || __put_user(req32.pixel_format, &req64->pixel_format)
1049 || __put_user(req32.flags, &req64->flags))
1050 return -EFAULT;
1051
1052 for (i = 0; i < 4; i++) {
1053 if (__put_user(req32.handles[i], &req64->handles[i]))
1054 return -EFAULT;
1055 if (__put_user(req32.pitches[i], &req64->pitches[i]))
1056 return -EFAULT;
1057 if (__put_user(req32.offsets[i], &req64->offsets[i]))
1058 return -EFAULT;
1059 if (__put_user(req32.modifier[i], &req64->modifier[i]))
1060 return -EFAULT;
1061 }
1062
1063 err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
1064 if (err)
1065 return err;
1066
1067 if (__get_user(req32.fb_id, &req64->fb_id))
1068 return -EFAULT;
1069
1070 if (copy_to_user(argp, &req32, sizeof(req32)))
1071 return -EFAULT;
1072
1073 return 0;
1074}
47a66e45 1075#endif
c631d5f9 1076
43fc884e 1077static drm_ioctl_compat_t *drm_compat_ioctls[] = {
9a186645
DA		 1078 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1079 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1080 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1081 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1082 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1083 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1084 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1085 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1086 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1087 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1088 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1089 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1090 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1091 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1092 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1093 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1094 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
a7fb8a23 1095#if IS_ENABLED(CONFIG_AGP)
9a186645
DA		 1096 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1097 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1098 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1099 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1100 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1101 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1102#endif
1103 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1104 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
09e40d65 1105#if defined(CONFIG_X86) || defined(CONFIG_IA64)
49568873 1106 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
09e40d65 1107#endif
9a186645 1108 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
47a66e45 1109#if defined(CONFIG_X86) || defined(CONFIG_IA64)
c631d5f9 1110 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
47a66e45 1111#endif
9a186645
DA		 1112};
1113
1114/**
1115 * Called whenever a 32-bit process running under a 64-bit kernel
1116 * performs an ioctl on /dev/drm.
1117 *
6c340eac 1118 * \param file_priv DRM file private.
9a186645
DA		 1119 * \param cmd command.
1120 * \param arg user argument.
1121 * \return zero on success or negative number on failure.
1122 */
1123long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1124{
1125 unsigned int nr = DRM_IOCTL_NR(cmd);
1126 drm_ioctl_compat_t *fn;
1127 int ret;
1128
7ffa05e0
IR		 1129 /* Assume that ioctls without an explicit compat routine will just
1130 * work. This may not always be a good assumption, but it's better
1131 * than always failing.
1132 */
3d77461e 1133 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
ed8b6704 1134 return drm_ioctl(filp, cmd, arg);
9a186645
DA		 1135
1136 fn = drm_compat_ioctls[nr];
1137
9a186645 1138 if (fn != NULL)
b5e89ed5 1139 ret = (*fn) (filp, cmd, arg);
9a186645 1140 else
ed8b6704 1141 ret = drm_ioctl(filp, cmd, arg);
9a186645
DA		 1142
1143 return ret;
1144}
b5e89ed5 1145
9a186645 1146EXPORT_SYMBOL(drm_compat_ioctl);
Linux kernel - Deliverables
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